diff options
| author | Kalle Valo <kvalo@codeaurora.org> | 2015-11-17 21:37:11 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2015-11-18 15:28:30 +0300 |
| commit | 7ac9a364c1721a863ecc6cc9aba66e10114908db (patch) | |
| tree | 2b83df4b655ea3494e95d9adb8d89ff539ecd688 /drivers/net/wireless/iwlegacy | |
| parent | 367a1092b555f4372a556ddb53970d25061c74d1 (diff) | |
| download | linux-7ac9a364c1721a863ecc6cc9aba66e10114908db.tar.xz | |
iwlegacy: move under intel directory
Part of reorganising wireless drivers directory and Kconfig.
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/iwlegacy')
20 files changed, 0 insertions, 38023 deletions
diff --git a/drivers/net/wireless/iwlegacy/3945-debug.c b/drivers/net/wireless/iwlegacy/3945-debug.c deleted file mode 100644 index c1b4441fb8b2..000000000000 --- a/drivers/net/wireless/iwlegacy/3945-debug.c +++ /dev/null @@ -1,511 +0,0 @@ -/****************************************************************************** - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, - * USA - * - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - *****************************************************************************/ - -#include "common.h" -#include "3945.h" - -static int -il3945_stats_flag(struct il_priv *il, char *buf, int bufsz) -{ - int p = 0; - - p += scnprintf(buf + p, bufsz - p, "Statistics Flag(0x%X):\n", - le32_to_cpu(il->_3945.stats.flag)); - if (le32_to_cpu(il->_3945.stats.flag) & UCODE_STATS_CLEAR_MSK) - p += scnprintf(buf + p, bufsz - p, - "\tStatistics have been cleared\n"); - p += scnprintf(buf + p, bufsz - p, "\tOperational Frequency: %s\n", - (le32_to_cpu(il->_3945.stats.flag) & - UCODE_STATS_FREQUENCY_MSK) ? "2.4 GHz" : "5.2 GHz"); - p += scnprintf(buf + p, bufsz - p, "\tTGj Narrow Band: %s\n", - (le32_to_cpu(il->_3945.stats.flag) & - UCODE_STATS_NARROW_BAND_MSK) ? "enabled" : "disabled"); - return p; -} - -static ssize_t -il3945_ucode_rx_stats_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct il_priv *il = file->private_data; - int pos = 0; - char *buf; - int bufsz = - sizeof(struct iwl39_stats_rx_phy) * 40 + - sizeof(struct iwl39_stats_rx_non_phy) * 40 + 400; - ssize_t ret; - struct iwl39_stats_rx_phy *ofdm, *accum_ofdm, *delta_ofdm, *max_ofdm; - struct iwl39_stats_rx_phy *cck, *accum_cck, *delta_cck, *max_cck; - struct iwl39_stats_rx_non_phy *general, *accum_general; - struct iwl39_stats_rx_non_phy *delta_general, *max_general; - - if (!il_is_alive(il)) - return -EAGAIN; - - buf = kzalloc(bufsz, GFP_KERNEL); - if (!buf) { - IL_ERR("Can not allocate Buffer\n"); - return -ENOMEM; - } - - /* - * The statistic information display here is based on - * the last stats notification from uCode - * might not reflect the current uCode activity - */ - ofdm = &il->_3945.stats.rx.ofdm; - cck = &il->_3945.stats.rx.cck; - general = &il->_3945.stats.rx.general; - accum_ofdm = &il->_3945.accum_stats.rx.ofdm; - accum_cck = &il->_3945.accum_stats.rx.cck; - accum_general = &il->_3945.accum_stats.rx.general; - delta_ofdm = &il->_3945.delta_stats.rx.ofdm; - delta_cck = &il->_3945.delta_stats.rx.cck; - delta_general = &il->_3945.delta_stats.rx.general; - max_ofdm = &il->_3945.max_delta.rx.ofdm; - max_cck = &il->_3945.max_delta.rx.cck; - max_general = &il->_3945.max_delta.rx.general; - - pos += il3945_stats_flag(il, buf, bufsz); - pos += - scnprintf(buf + pos, bufsz - pos, - "%-32s current" - "acumulative delta max\n", - "Statistics_Rx - OFDM:"); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "ina_cnt:", - le32_to_cpu(ofdm->ina_cnt), accum_ofdm->ina_cnt, - delta_ofdm->ina_cnt, max_ofdm->ina_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "fina_cnt:", - le32_to_cpu(ofdm->fina_cnt), accum_ofdm->fina_cnt, - delta_ofdm->fina_cnt, max_ofdm->fina_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "plcp_err:", - le32_to_cpu(ofdm->plcp_err), accum_ofdm->plcp_err, - delta_ofdm->plcp_err, max_ofdm->plcp_err); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "crc32_err:", - le32_to_cpu(ofdm->crc32_err), accum_ofdm->crc32_err, - delta_ofdm->crc32_err, max_ofdm->crc32_err); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "overrun_err:", - le32_to_cpu(ofdm->overrun_err), accum_ofdm->overrun_err, - delta_ofdm->overrun_err, max_ofdm->overrun_err); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "early_overrun_err:", - le32_to_cpu(ofdm->early_overrun_err), - accum_ofdm->early_overrun_err, - delta_ofdm->early_overrun_err, - max_ofdm->early_overrun_err); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "crc32_good:", - le32_to_cpu(ofdm->crc32_good), accum_ofdm->crc32_good, - delta_ofdm->crc32_good, max_ofdm->crc32_good); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "false_alarm_cnt:", - le32_to_cpu(ofdm->false_alarm_cnt), - accum_ofdm->false_alarm_cnt, delta_ofdm->false_alarm_cnt, - max_ofdm->false_alarm_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "fina_sync_err_cnt:", - le32_to_cpu(ofdm->fina_sync_err_cnt), - accum_ofdm->fina_sync_err_cnt, - delta_ofdm->fina_sync_err_cnt, - max_ofdm->fina_sync_err_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "sfd_timeout:", - le32_to_cpu(ofdm->sfd_timeout), accum_ofdm->sfd_timeout, - delta_ofdm->sfd_timeout, max_ofdm->sfd_timeout); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "fina_timeout:", - le32_to_cpu(ofdm->fina_timeout), accum_ofdm->fina_timeout, - delta_ofdm->fina_timeout, max_ofdm->fina_timeout); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "unresponded_rts:", - le32_to_cpu(ofdm->unresponded_rts), - accum_ofdm->unresponded_rts, delta_ofdm->unresponded_rts, - max_ofdm->unresponded_rts); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", - "rxe_frame_lmt_ovrun:", - le32_to_cpu(ofdm->rxe_frame_limit_overrun), - accum_ofdm->rxe_frame_limit_overrun, - delta_ofdm->rxe_frame_limit_overrun, - max_ofdm->rxe_frame_limit_overrun); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "sent_ack_cnt:", - le32_to_cpu(ofdm->sent_ack_cnt), accum_ofdm->sent_ack_cnt, - delta_ofdm->sent_ack_cnt, max_ofdm->sent_ack_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "sent_cts_cnt:", - le32_to_cpu(ofdm->sent_cts_cnt), accum_ofdm->sent_cts_cnt, - delta_ofdm->sent_cts_cnt, max_ofdm->sent_cts_cnt); - - pos += - scnprintf(buf + pos, bufsz - pos, - "%-32s current" - "acumulative delta max\n", - "Statistics_Rx - CCK:"); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "ina_cnt:", - le32_to_cpu(cck->ina_cnt), accum_cck->ina_cnt, - delta_cck->ina_cnt, max_cck->ina_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "fina_cnt:", - le32_to_cpu(cck->fina_cnt), accum_cck->fina_cnt, - delta_cck->fina_cnt, max_cck->fina_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "plcp_err:", - le32_to_cpu(cck->plcp_err), accum_cck->plcp_err, - delta_cck->plcp_err, max_cck->plcp_err); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "crc32_err:", - le32_to_cpu(cck->crc32_err), accum_cck->crc32_err, - delta_cck->crc32_err, max_cck->crc32_err); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "overrun_err:", - le32_to_cpu(cck->overrun_err), accum_cck->overrun_err, - delta_cck->overrun_err, max_cck->overrun_err); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "early_overrun_err:", - le32_to_cpu(cck->early_overrun_err), - accum_cck->early_overrun_err, - delta_cck->early_overrun_err, max_cck->early_overrun_err); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "crc32_good:", - le32_to_cpu(cck->crc32_good), accum_cck->crc32_good, - delta_cck->crc32_good, max_cck->crc32_good); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "false_alarm_cnt:", - le32_to_cpu(cck->false_alarm_cnt), - accum_cck->false_alarm_cnt, delta_cck->false_alarm_cnt, - max_cck->false_alarm_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "fina_sync_err_cnt:", - le32_to_cpu(cck->fina_sync_err_cnt), - accum_cck->fina_sync_err_cnt, - delta_cck->fina_sync_err_cnt, max_cck->fina_sync_err_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "sfd_timeout:", - le32_to_cpu(cck->sfd_timeout), accum_cck->sfd_timeout, - delta_cck->sfd_timeout, max_cck->sfd_timeout); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "fina_timeout:", - le32_to_cpu(cck->fina_timeout), accum_cck->fina_timeout, - delta_cck->fina_timeout, max_cck->fina_timeout); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "unresponded_rts:", - le32_to_cpu(cck->unresponded_rts), - accum_cck->unresponded_rts, delta_cck->unresponded_rts, - max_cck->unresponded_rts); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", - "rxe_frame_lmt_ovrun:", - le32_to_cpu(cck->rxe_frame_limit_overrun), - accum_cck->rxe_frame_limit_overrun, - delta_cck->rxe_frame_limit_overrun, - max_cck->rxe_frame_limit_overrun); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "sent_ack_cnt:", - le32_to_cpu(cck->sent_ack_cnt), accum_cck->sent_ack_cnt, - delta_cck->sent_ack_cnt, max_cck->sent_ack_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "sent_cts_cnt:", - le32_to_cpu(cck->sent_cts_cnt), accum_cck->sent_cts_cnt, - delta_cck->sent_cts_cnt, max_cck->sent_cts_cnt); - - pos += - scnprintf(buf + pos, bufsz - pos, - "%-32s current" - "acumulative delta max\n", - "Statistics_Rx - GENERAL:"); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "bogus_cts:", - le32_to_cpu(general->bogus_cts), accum_general->bogus_cts, - delta_general->bogus_cts, max_general->bogus_cts); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "bogus_ack:", - le32_to_cpu(general->bogus_ack), accum_general->bogus_ack, - delta_general->bogus_ack, max_general->bogus_ack); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "non_bssid_frames:", - le32_to_cpu(general->non_bssid_frames), - accum_general->non_bssid_frames, - delta_general->non_bssid_frames, - max_general->non_bssid_frames); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "filtered_frames:", - le32_to_cpu(general->filtered_frames), - accum_general->filtered_frames, - delta_general->filtered_frames, - max_general->filtered_frames); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", - "non_channel_beacons:", - le32_to_cpu(general->non_channel_beacons), - accum_general->non_channel_beacons, - delta_general->non_channel_beacons, - max_general->non_channel_beacons); - - ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); - kfree(buf); - return ret; -} - -static ssize_t -il3945_ucode_tx_stats_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct il_priv *il = file->private_data; - int pos = 0; - char *buf; - int bufsz = (sizeof(struct iwl39_stats_tx) * 48) + 250; - ssize_t ret; - struct iwl39_stats_tx *tx, *accum_tx, *delta_tx, *max_tx; - - if (!il_is_alive(il)) - return -EAGAIN; - - buf = kzalloc(bufsz, GFP_KERNEL); - if (!buf) { - IL_ERR("Can not allocate Buffer\n"); - return -ENOMEM; - } - - /* - * The statistic information display here is based on - * the last stats notification from uCode - * might not reflect the current uCode activity - */ - tx = &il->_3945.stats.tx; - accum_tx = &il->_3945.accum_stats.tx; - delta_tx = &il->_3945.delta_stats.tx; - max_tx = &il->_3945.max_delta.tx; - pos += il3945_stats_flag(il, buf, bufsz); - pos += - scnprintf(buf + pos, bufsz - pos, - "%-32s current" - "acumulative delta max\n", - "Statistics_Tx:"); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "preamble:", - le32_to_cpu(tx->preamble_cnt), accum_tx->preamble_cnt, - delta_tx->preamble_cnt, max_tx->preamble_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "rx_detected_cnt:", - le32_to_cpu(tx->rx_detected_cnt), - accum_tx->rx_detected_cnt, delta_tx->rx_detected_cnt, - max_tx->rx_detected_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "bt_prio_defer_cnt:", - le32_to_cpu(tx->bt_prio_defer_cnt), - accum_tx->bt_prio_defer_cnt, delta_tx->bt_prio_defer_cnt, - max_tx->bt_prio_defer_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "bt_prio_kill_cnt:", - le32_to_cpu(tx->bt_prio_kill_cnt), - accum_tx->bt_prio_kill_cnt, delta_tx->bt_prio_kill_cnt, - max_tx->bt_prio_kill_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "few_bytes_cnt:", - le32_to_cpu(tx->few_bytes_cnt), accum_tx->few_bytes_cnt, - delta_tx->few_bytes_cnt, max_tx->few_bytes_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "cts_timeout:", - le32_to_cpu(tx->cts_timeout), accum_tx->cts_timeout, - delta_tx->cts_timeout, max_tx->cts_timeout); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "ack_timeout:", - le32_to_cpu(tx->ack_timeout), accum_tx->ack_timeout, - delta_tx->ack_timeout, max_tx->ack_timeout); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "expected_ack_cnt:", - le32_to_cpu(tx->expected_ack_cnt), - accum_tx->expected_ack_cnt, delta_tx->expected_ack_cnt, - max_tx->expected_ack_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "actual_ack_cnt:", - le32_to_cpu(tx->actual_ack_cnt), accum_tx->actual_ack_cnt, - delta_tx->actual_ack_cnt, max_tx->actual_ack_cnt); - - ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); - kfree(buf); - return ret; -} - -static ssize_t -il3945_ucode_general_stats_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct il_priv *il = file->private_data; - int pos = 0; - char *buf; - int bufsz = sizeof(struct iwl39_stats_general) * 10 + 300; - ssize_t ret; - struct iwl39_stats_general *general, *accum_general; - struct iwl39_stats_general *delta_general, *max_general; - struct stats_dbg *dbg, *accum_dbg, *delta_dbg, *max_dbg; - struct iwl39_stats_div *div, *accum_div, *delta_div, *max_div; - - if (!il_is_alive(il)) - return -EAGAIN; - - buf = kzalloc(bufsz, GFP_KERNEL); - if (!buf) { - IL_ERR("Can not allocate Buffer\n"); - return -ENOMEM; - } - - /* - * The statistic information display here is based on - * the last stats notification from uCode - * might not reflect the current uCode activity - */ - general = &il->_3945.stats.general; - dbg = &il->_3945.stats.general.dbg; - div = &il->_3945.stats.general.div; - accum_general = &il->_3945.accum_stats.general; - delta_general = &il->_3945.delta_stats.general; - max_general = &il->_3945.max_delta.general; - accum_dbg = &il->_3945.accum_stats.general.dbg; - delta_dbg = &il->_3945.delta_stats.general.dbg; - max_dbg = &il->_3945.max_delta.general.dbg; - accum_div = &il->_3945.accum_stats.general.div; - delta_div = &il->_3945.delta_stats.general.div; - max_div = &il->_3945.max_delta.general.div; - pos += il3945_stats_flag(il, buf, bufsz); - pos += - scnprintf(buf + pos, bufsz - pos, - "%-32s current" - "acumulative delta max\n", - "Statistics_General:"); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "burst_check:", - le32_to_cpu(dbg->burst_check), accum_dbg->burst_check, - delta_dbg->burst_check, max_dbg->burst_check); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "burst_count:", - le32_to_cpu(dbg->burst_count), accum_dbg->burst_count, - delta_dbg->burst_count, max_dbg->burst_count); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "sleep_time:", - le32_to_cpu(general->sleep_time), - accum_general->sleep_time, delta_general->sleep_time, - max_general->sleep_time); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "slots_out:", - le32_to_cpu(general->slots_out), accum_general->slots_out, - delta_general->slots_out, max_general->slots_out); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "slots_idle:", - le32_to_cpu(general->slots_idle), - accum_general->slots_idle, delta_general->slots_idle, - max_general->slots_idle); - pos += - scnprintf(buf + pos, bufsz - pos, "ttl_timestamp:\t\t\t%u\n", - le32_to_cpu(general->ttl_timestamp)); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "tx_on_a:", - le32_to_cpu(div->tx_on_a), accum_div->tx_on_a, - delta_div->tx_on_a, max_div->tx_on_a); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "tx_on_b:", - le32_to_cpu(div->tx_on_b), accum_div->tx_on_b, - delta_div->tx_on_b, max_div->tx_on_b); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "exec_time:", - le32_to_cpu(div->exec_time), accum_div->exec_time, - delta_div->exec_time, max_div->exec_time); - pos += - scnprintf(buf + pos, bufsz - pos, - " %-30s %10u %10u %10u %10u\n", "probe_time:", - le32_to_cpu(div->probe_time), accum_div->probe_time, - delta_div->probe_time, max_div->probe_time); - ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); - kfree(buf); - return ret; -} - -const struct il_debugfs_ops il3945_debugfs_ops = { - .rx_stats_read = il3945_ucode_rx_stats_read, - .tx_stats_read = il3945_ucode_tx_stats_read, - .general_stats_read = il3945_ucode_general_stats_read, -}; diff --git a/drivers/net/wireless/iwlegacy/3945-mac.c b/drivers/net/wireless/iwlegacy/3945-mac.c deleted file mode 100644 index af1b3e6839fa..000000000000 --- a/drivers/net/wireless/iwlegacy/3945-mac.c +++ /dev/null @@ -1,3959 +0,0 @@ -/****************************************************************************** - * - * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved. - * - * Portions of this file are derived from the ipw3945 project, as well - * as portions of the ieee80211 subsystem header files. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA - * - * The full GNU General Public License is included in this distribution in the - * file called LICENSE. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - *****************************************************************************/ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/pci.h> -#include <linux/pci-aspm.h> -#include <linux/slab.h> -#include <linux/dma-mapping.h> -#include <linux/delay.h> -#include <linux/sched.h> -#include <linux/skbuff.h> -#include <linux/netdevice.h> -#include <linux/firmware.h> -#include <linux/etherdevice.h> -#include <linux/if_arp.h> - -#include <net/ieee80211_radiotap.h> -#include <net/mac80211.h> - -#include <asm/div64.h> - -#define DRV_NAME "iwl3945" - -#include "commands.h" -#include "common.h" -#include "3945.h" -#include "iwl-spectrum.h" - -/* - * module name, copyright, version, etc. - */ - -#define DRV_DESCRIPTION \ -"Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux" - -#ifdef CONFIG_IWLEGACY_DEBUG -#define VD "d" -#else -#define VD -#endif - -/* - * add "s" to indicate spectrum measurement included. - * we add it here to be consistent with previous releases in which - * this was configurable. - */ -#define DRV_VERSION IWLWIFI_VERSION VD "s" -#define DRV_COPYRIGHT "Copyright(c) 2003-2011 Intel Corporation" -#define DRV_AUTHOR "<ilw@linux.intel.com>" - -MODULE_DESCRIPTION(DRV_DESCRIPTION); -MODULE_VERSION(DRV_VERSION); -MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); -MODULE_LICENSE("GPL"); - - /* module parameters */ -struct il_mod_params il3945_mod_params = { - .sw_crypto = 1, - .restart_fw = 1, - .disable_hw_scan = 1, - /* the rest are 0 by default */ -}; - -/** - * il3945_get_antenna_flags - Get antenna flags for RXON command - * @il: eeprom and antenna fields are used to determine antenna flags - * - * il->eeprom39 is used to determine if antenna AUX/MAIN are reversed - * il3945_mod_params.antenna specifies the antenna diversity mode: - * - * IL_ANTENNA_DIVERSITY - NIC selects best antenna by itself - * IL_ANTENNA_MAIN - Force MAIN antenna - * IL_ANTENNA_AUX - Force AUX antenna - */ -__le32 -il3945_get_antenna_flags(const struct il_priv *il) -{ - struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom; - - switch (il3945_mod_params.antenna) { - case IL_ANTENNA_DIVERSITY: - return 0; - - case IL_ANTENNA_MAIN: - if (eeprom->antenna_switch_type) - return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK; - return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK; - - case IL_ANTENNA_AUX: - if (eeprom->antenna_switch_type) - return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK; - return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK; - } - - /* bad antenna selector value */ - IL_ERR("Bad antenna selector value (0x%x)\n", - il3945_mod_params.antenna); - - return 0; /* "diversity" is default if error */ -} - -static int -il3945_set_ccmp_dynamic_key_info(struct il_priv *il, - struct ieee80211_key_conf *keyconf, u8 sta_id) -{ - unsigned long flags; - __le16 key_flags = 0; - int ret; - - key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK); - key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); - - if (sta_id == il->hw_params.bcast_id) - key_flags |= STA_KEY_MULTICAST_MSK; - - keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; - keyconf->hw_key_idx = keyconf->keyidx; - key_flags &= ~STA_KEY_FLG_INVALID; - - spin_lock_irqsave(&il->sta_lock, flags); - il->stations[sta_id].keyinfo.cipher = keyconf->cipher; - il->stations[sta_id].keyinfo.keylen = keyconf->keylen; - memcpy(il->stations[sta_id].keyinfo.key, keyconf->key, keyconf->keylen); - - memcpy(il->stations[sta_id].sta.key.key, keyconf->key, keyconf->keylen); - - if ((il->stations[sta_id].sta.key. - key_flags & STA_KEY_FLG_ENCRYPT_MSK) == STA_KEY_FLG_NO_ENC) - il->stations[sta_id].sta.key.key_offset = - il_get_free_ucode_key_idx(il); - /* else, we are overriding an existing key => no need to allocated room - * in uCode. */ - - WARN(il->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET, - "no space for a new key"); - - il->stations[sta_id].sta.key.key_flags = key_flags; - il->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; - il->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; - - D_INFO("hwcrypto: modify ucode station key info\n"); - - ret = il_send_add_sta(il, &il->stations[sta_id].sta, CMD_ASYNC); - - spin_unlock_irqrestore(&il->sta_lock, flags); - - return ret; -} - -static int -il3945_set_tkip_dynamic_key_info(struct il_priv *il, - struct ieee80211_key_conf *keyconf, u8 sta_id) -{ - return -EOPNOTSUPP; -} - -static int -il3945_set_wep_dynamic_key_info(struct il_priv *il, - struct ieee80211_key_conf *keyconf, u8 sta_id) -{ - return -EOPNOTSUPP; -} - -static int -il3945_clear_sta_key_info(struct il_priv *il, u8 sta_id) -{ - unsigned long flags; - struct il_addsta_cmd sta_cmd; - - spin_lock_irqsave(&il->sta_lock, flags); - memset(&il->stations[sta_id].keyinfo, 0, sizeof(struct il_hw_key)); - memset(&il->stations[sta_id].sta.key, 0, sizeof(struct il4965_keyinfo)); - il->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC; - il->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; - il->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; - memcpy(&sta_cmd, &il->stations[sta_id].sta, - sizeof(struct il_addsta_cmd)); - spin_unlock_irqrestore(&il->sta_lock, flags); - - D_INFO("hwcrypto: clear ucode station key info\n"); - return il_send_add_sta(il, &sta_cmd, CMD_SYNC); -} - -static int -il3945_set_dynamic_key(struct il_priv *il, struct ieee80211_key_conf *keyconf, - u8 sta_id) -{ - int ret = 0; - - keyconf->hw_key_idx = HW_KEY_DYNAMIC; - - switch (keyconf->cipher) { - case WLAN_CIPHER_SUITE_CCMP: - ret = il3945_set_ccmp_dynamic_key_info(il, keyconf, sta_id); - break; - case WLAN_CIPHER_SUITE_TKIP: - ret = il3945_set_tkip_dynamic_key_info(il, keyconf, sta_id); - break; - case WLAN_CIPHER_SUITE_WEP40: - case WLAN_CIPHER_SUITE_WEP104: - ret = il3945_set_wep_dynamic_key_info(il, keyconf, sta_id); - break; - default: - IL_ERR("Unknown alg: %s alg=%x\n", __func__, keyconf->cipher); - ret = -EINVAL; - } - - D_WEP("Set dynamic key: alg=%x len=%d idx=%d sta=%d ret=%d\n", - keyconf->cipher, keyconf->keylen, keyconf->keyidx, sta_id, ret); - - return ret; -} - -static int -il3945_remove_static_key(struct il_priv *il) -{ - int ret = -EOPNOTSUPP; - - return ret; -} - -static int -il3945_set_static_key(struct il_priv *il, struct ieee80211_key_conf *key) -{ - if (key->cipher == WLAN_CIPHER_SUITE_WEP40 || - key->cipher == WLAN_CIPHER_SUITE_WEP104) - return -EOPNOTSUPP; - - IL_ERR("Static key invalid: cipher %x\n", key->cipher); - return -EINVAL; -} - -static void -il3945_clear_free_frames(struct il_priv *il) -{ - struct list_head *element; - - D_INFO("%d frames on pre-allocated heap on clear.\n", il->frames_count); - - while (!list_empty(&il->free_frames)) { - element = il->free_frames.next; - list_del(element); - kfree(list_entry(element, struct il3945_frame, list)); - il->frames_count--; - } - - if (il->frames_count) { - IL_WARN("%d frames still in use. Did we lose one?\n", - il->frames_count); - il->frames_count = 0; - } -} - -static struct il3945_frame * -il3945_get_free_frame(struct il_priv *il) -{ - struct il3945_frame *frame; - struct list_head *element; - if (list_empty(&il->free_frames)) { - frame = kzalloc(sizeof(*frame), GFP_KERNEL); - if (!frame) { - IL_ERR("Could not allocate frame!\n"); - return NULL; - } - - il->frames_count++; - return frame; - } - - element = il->free_frames.next; - list_del(element); - return list_entry(element, struct il3945_frame, list); -} - -static void -il3945_free_frame(struct il_priv *il, struct il3945_frame *frame) -{ - memset(frame, 0, sizeof(*frame)); - list_add(&frame->list, &il->free_frames); -} - -unsigned int -il3945_fill_beacon_frame(struct il_priv *il, struct ieee80211_hdr *hdr, - int left) -{ - - if (!il_is_associated(il) || !il->beacon_skb) - return 0; - - if (il->beacon_skb->len > left) - return 0; - - memcpy(hdr, il->beacon_skb->data, il->beacon_skb->len); - - return il->beacon_skb->len; -} - -static int -il3945_send_beacon_cmd(struct il_priv *il) -{ - struct il3945_frame *frame; - unsigned int frame_size; - int rc; - u8 rate; - - frame = il3945_get_free_frame(il); - - if (!frame) { - IL_ERR("Could not obtain free frame buffer for beacon " - "command.\n"); - return -ENOMEM; - } - - rate = il_get_lowest_plcp(il); - - frame_size = il3945_hw_get_beacon_cmd(il, frame, rate); - - rc = il_send_cmd_pdu(il, C_TX_BEACON, frame_size, &frame->u.cmd[0]); - - il3945_free_frame(il, frame); - - return rc; -} - -static void -il3945_unset_hw_params(struct il_priv *il) -{ - if (il->_3945.shared_virt) - dma_free_coherent(&il->pci_dev->dev, - sizeof(struct il3945_shared), - il->_3945.shared_virt, il->_3945.shared_phys); -} - -static void -il3945_build_tx_cmd_hwcrypto(struct il_priv *il, struct ieee80211_tx_info *info, - struct il_device_cmd *cmd, - struct sk_buff *skb_frag, int sta_id) -{ - struct il3945_tx_cmd *tx_cmd = (struct il3945_tx_cmd *)cmd->cmd.payload; - struct il_hw_key *keyinfo = &il->stations[sta_id].keyinfo; - - tx_cmd->sec_ctl = 0; - - switch (keyinfo->cipher) { - case WLAN_CIPHER_SUITE_CCMP: - tx_cmd->sec_ctl = TX_CMD_SEC_CCM; - memcpy(tx_cmd->key, keyinfo->key, keyinfo->keylen); - D_TX("tx_cmd with AES hwcrypto\n"); - break; - - case WLAN_CIPHER_SUITE_TKIP: - break; - - case WLAN_CIPHER_SUITE_WEP104: - tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128; - /* fall through */ - case WLAN_CIPHER_SUITE_WEP40: - tx_cmd->sec_ctl |= - TX_CMD_SEC_WEP | (info->control.hw_key-> - hw_key_idx & TX_CMD_SEC_MSK) << - TX_CMD_SEC_SHIFT; - - memcpy(&tx_cmd->key[3], keyinfo->key, keyinfo->keylen); - - D_TX("Configuring packet for WEP encryption " "with key %d\n", - info->control.hw_key->hw_key_idx); - break; - - default: - IL_ERR("Unknown encode cipher %x\n", keyinfo->cipher); - break; - } -} - -/* - * handle build C_TX command notification. - */ -static void -il3945_build_tx_cmd_basic(struct il_priv *il, struct il_device_cmd *cmd, - struct ieee80211_tx_info *info, - struct ieee80211_hdr *hdr, u8 std_id) -{ - struct il3945_tx_cmd *tx_cmd = (struct il3945_tx_cmd *)cmd->cmd.payload; - __le32 tx_flags = tx_cmd->tx_flags; - __le16 fc = hdr->frame_control; - - tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; - if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) { - tx_flags |= TX_CMD_FLG_ACK_MSK; - if (ieee80211_is_mgmt(fc)) - tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; - if (ieee80211_is_probe_resp(fc) && - !(le16_to_cpu(hdr->seq_ctrl) & 0xf)) - tx_flags |= TX_CMD_FLG_TSF_MSK; - } else { - tx_flags &= (~TX_CMD_FLG_ACK_MSK); - tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; - } - - tx_cmd->sta_id = std_id; - if (ieee80211_has_morefrags(fc)) - tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK; - - if (ieee80211_is_data_qos(fc)) { - u8 *qc = ieee80211_get_qos_ctl(hdr); - tx_cmd->tid_tspec = qc[0] & 0xf; - tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; - } else { - tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; - } - - il_tx_cmd_protection(il, info, fc, &tx_flags); - - tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK); - if (ieee80211_is_mgmt(fc)) { - if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc)) - tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3); - else - tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2); - } else { - tx_cmd->timeout.pm_frame_timeout = 0; - } - - tx_cmd->driver_txop = 0; - tx_cmd->tx_flags = tx_flags; - tx_cmd->next_frame_len = 0; -} - -/* - * start C_TX command process - */ -static int -il3945_tx_skb(struct il_priv *il, - struct ieee80211_sta *sta, - struct sk_buff *skb) -{ - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; - struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); - struct il3945_tx_cmd *tx_cmd; - struct il_tx_queue *txq = NULL; - struct il_queue *q = NULL; - struct il_device_cmd *out_cmd; - struct il_cmd_meta *out_meta; - dma_addr_t phys_addr; - dma_addr_t txcmd_phys; - int txq_id = skb_get_queue_mapping(skb); - u16 len, idx, hdr_len; - u16 firstlen, secondlen; - u8 id; - u8 unicast; - u8 sta_id; - u8 tid = 0; - __le16 fc; - u8 wait_write_ptr = 0; - unsigned long flags; - - spin_lock_irqsave(&il->lock, flags); - if (il_is_rfkill(il)) { - D_DROP("Dropping - RF KILL\n"); - goto drop_unlock; - } - - if ((ieee80211_get_tx_rate(il->hw, info)->hw_value & 0xFF) == - IL_INVALID_RATE) { - IL_ERR("ERROR: No TX rate available.\n"); - goto drop_unlock; - } - - unicast = !is_multicast_ether_addr(hdr->addr1); - id = 0; - - fc = hdr->frame_control; - -#ifdef CONFIG_IWLEGACY_DEBUG - if (ieee80211_is_auth(fc)) - D_TX("Sending AUTH frame\n"); - else if (ieee80211_is_assoc_req(fc)) - D_TX("Sending ASSOC frame\n"); - else if (ieee80211_is_reassoc_req(fc)) - D_TX("Sending REASSOC frame\n"); -#endif - - spin_unlock_irqrestore(&il->lock, flags); - - hdr_len = ieee80211_hdrlen(fc); - - /* Find idx into station table for destination station */ - sta_id = il_sta_id_or_broadcast(il, sta); - if (sta_id == IL_INVALID_STATION) { - D_DROP("Dropping - INVALID STATION: %pM\n", hdr->addr1); - goto drop; - } - - D_RATE("station Id %d\n", sta_id); - - if (ieee80211_is_data_qos(fc)) { - u8 *qc = ieee80211_get_qos_ctl(hdr); - tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; - if (unlikely(tid >= MAX_TID_COUNT)) - goto drop; - } - - /* Descriptor for chosen Tx queue */ - txq = &il->txq[txq_id]; - q = &txq->q; - - if ((il_queue_space(q) < q->high_mark)) - goto drop; - - spin_lock_irqsave(&il->lock, flags); - - idx = il_get_cmd_idx(q, q->write_ptr, 0); - - txq->skbs[q->write_ptr] = skb; - - /* Init first empty entry in queue's array of Tx/cmd buffers */ - out_cmd = txq->cmd[idx]; - out_meta = &txq->meta[idx]; - tx_cmd = (struct il3945_tx_cmd *)out_cmd->cmd.payload; - memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr)); - memset(tx_cmd, 0, sizeof(*tx_cmd)); - - /* - * Set up the Tx-command (not MAC!) header. - * Store the chosen Tx queue and TFD idx within the sequence field; - * after Tx, uCode's Tx response will return this value so driver can - * locate the frame within the tx queue and do post-tx processing. - */ - out_cmd->hdr.cmd = C_TX; - out_cmd->hdr.sequence = - cpu_to_le16((u16) - (QUEUE_TO_SEQ(txq_id) | IDX_TO_SEQ(q->write_ptr))); - - /* Copy MAC header from skb into command buffer */ - memcpy(tx_cmd->hdr, hdr, hdr_len); - - if (info->control.hw_key) - il3945_build_tx_cmd_hwcrypto(il, info, out_cmd, skb, sta_id); - - /* TODO need this for burst mode later on */ - il3945_build_tx_cmd_basic(il, out_cmd, info, hdr, sta_id); - - il3945_hw_build_tx_cmd_rate(il, out_cmd, info, hdr, sta_id); - - /* Total # bytes to be transmitted */ - tx_cmd->len = cpu_to_le16((u16) skb->len); - - tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK; - tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK; - - /* - * Use the first empty entry in this queue's command buffer array - * to contain the Tx command and MAC header concatenated together - * (payload data will be in another buffer). - * Size of this varies, due to varying MAC header length. - * If end is not dword aligned, we'll have 2 extra bytes at the end - * of the MAC header (device reads on dword boundaries). - * We'll tell device about this padding later. - */ - len = - sizeof(struct il3945_tx_cmd) + sizeof(struct il_cmd_header) + - hdr_len; - firstlen = (len + 3) & ~3; - - /* Physical address of this Tx command's header (not MAC header!), - * within command buffer array. */ - txcmd_phys = - pci_map_single(il->pci_dev, &out_cmd->hdr, firstlen, - PCI_DMA_TODEVICE); - if (unlikely(pci_dma_mapping_error(il->pci_dev, txcmd_phys))) - goto drop_unlock; - - /* Set up TFD's 2nd entry to point directly to remainder of skb, - * if any (802.11 null frames have no payload). */ - secondlen = skb->len - hdr_len; - if (secondlen > 0) { - phys_addr = - pci_map_single(il->pci_dev, skb->data + hdr_len, secondlen, - PCI_DMA_TODEVICE); - if (unlikely(pci_dma_mapping_error(il->pci_dev, phys_addr))) - goto drop_unlock; - } - - /* Add buffer containing Tx command and MAC(!) header to TFD's - * first entry */ - il->ops->txq_attach_buf_to_tfd(il, txq, txcmd_phys, firstlen, 1, 0); - dma_unmap_addr_set(out_meta, mapping, txcmd_phys); - dma_unmap_len_set(out_meta, len, firstlen); - if (secondlen > 0) - il->ops->txq_attach_buf_to_tfd(il, txq, phys_addr, secondlen, 0, - U32_PAD(secondlen)); - - if (!ieee80211_has_morefrags(hdr->frame_control)) { - txq->need_update = 1; - } else { - wait_write_ptr = 1; - txq->need_update = 0; - } - - il_update_stats(il, true, fc, skb->len); - - D_TX("sequence nr = 0X%x\n", le16_to_cpu(out_cmd->hdr.sequence)); - D_TX("tx_flags = 0X%x\n", le32_to_cpu(tx_cmd->tx_flags)); - il_print_hex_dump(il, IL_DL_TX, tx_cmd, sizeof(*tx_cmd)); - il_print_hex_dump(il, IL_DL_TX, (u8 *) tx_cmd->hdr, - ieee80211_hdrlen(fc)); - - /* Tell device the write idx *just past* this latest filled TFD */ - q->write_ptr = il_queue_inc_wrap(q->write_ptr, q->n_bd); - il_txq_update_write_ptr(il, txq); - spin_unlock_irqrestore(&il->lock, flags); - - if (il_queue_space(q) < q->high_mark && il->mac80211_registered) { - if (wait_write_ptr) { - spin_lock_irqsave(&il->lock, flags); - txq->need_update = 1; - il_txq_update_write_ptr(il, txq); - spin_unlock_irqrestore(&il->lock, flags); - } - - il_stop_queue(il, txq); - } - - return 0; - -drop_unlock: - spin_unlock_irqrestore(&il->lock, flags); -drop: - return -1; -} - -static int -il3945_get_measurement(struct il_priv *il, - struct ieee80211_measurement_params *params, u8 type) -{ - struct il_spectrum_cmd spectrum; - struct il_rx_pkt *pkt; - struct il_host_cmd cmd = { - .id = C_SPECTRUM_MEASUREMENT, - .data = (void *)&spectrum, - .flags = CMD_WANT_SKB, - }; - u32 add_time = le64_to_cpu(params->start_time); - int rc; - int spectrum_resp_status; - int duration = le16_to_cpu(params->duration); - - if (il_is_associated(il)) - add_time = - il_usecs_to_beacons(il, - le64_to_cpu(params->start_time) - - il->_3945.last_tsf, - le16_to_cpu(il->timing.beacon_interval)); - - memset(&spectrum, 0, sizeof(spectrum)); - - spectrum.channel_count = cpu_to_le16(1); - spectrum.flags = - RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK; - spectrum.filter_flags = MEASUREMENT_FILTER_FLAG; - cmd.len = sizeof(spectrum); - spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len)); - - if (il_is_associated(il)) - spectrum.start_time = - il_add_beacon_time(il, il->_3945.last_beacon_time, add_time, - le16_to_cpu(il->timing.beacon_interval)); - else - spectrum.start_time = 0; - - spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT); - spectrum.channels[0].channel = params->channel; - spectrum.channels[0].type = type; - if (il->active.flags & RXON_FLG_BAND_24G_MSK) - spectrum.flags |= - RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK | - RXON_FLG_TGG_PROTECT_MSK; - - rc = il_send_cmd_sync(il, &cmd); - if (rc) - return rc; - - pkt = (struct il_rx_pkt *)cmd.reply_page; - if (pkt->hdr.flags & IL_CMD_FAILED_MSK) { - IL_ERR("Bad return from N_RX_ON_ASSOC command\n"); - rc = -EIO; - } - - spectrum_resp_status = le16_to_cpu(pkt->u.spectrum.status); - switch (spectrum_resp_status) { - case 0: /* Command will be handled */ - if (pkt->u.spectrum.id != 0xff) { - D_INFO("Replaced existing measurement: %d\n", - pkt->u.spectrum.id); - il->measurement_status &= ~MEASUREMENT_READY; - } - il->measurement_status |= MEASUREMENT_ACTIVE; - rc = 0; - break; - - case 1: /* Command will not be handled */ - rc = -EAGAIN; - break; - } - - il_free_pages(il, cmd.reply_page); - - return rc; -} - -static void -il3945_hdl_alive(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - struct il_alive_resp *palive; - struct delayed_work *pwork; - - palive = &pkt->u.alive_frame; - - D_INFO("Alive ucode status 0x%08X revision " "0x%01X 0x%01X\n", - palive->is_valid, palive->ver_type, palive->ver_subtype); - - if (palive->ver_subtype == INITIALIZE_SUBTYPE) { - D_INFO("Initialization Alive received.\n"); - memcpy(&il->card_alive_init, &pkt->u.alive_frame, - sizeof(struct il_alive_resp)); - pwork = &il->init_alive_start; - } else { - D_INFO("Runtime Alive received.\n"); - memcpy(&il->card_alive, &pkt->u.alive_frame, - sizeof(struct il_alive_resp)); - pwork = &il->alive_start; - il3945_disable_events(il); - } - - /* We delay the ALIVE response by 5ms to - * give the HW RF Kill time to activate... */ - if (palive->is_valid == UCODE_VALID_OK) - queue_delayed_work(il->workqueue, pwork, msecs_to_jiffies(5)); - else - IL_WARN("uCode did not respond OK.\n"); -} - -static void -il3945_hdl_add_sta(struct il_priv *il, struct il_rx_buf *rxb) -{ -#ifdef CONFIG_IWLEGACY_DEBUG - struct il_rx_pkt *pkt = rxb_addr(rxb); -#endif - - D_RX("Received C_ADD_STA: 0x%02X\n", pkt->u.status); -} - -static void -il3945_hdl_beacon(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - struct il3945_beacon_notif *beacon = &(pkt->u.beacon_status); -#ifdef CONFIG_IWLEGACY_DEBUG - u8 rate = beacon->beacon_notify_hdr.rate; - - D_RX("beacon status %x retries %d iss %d " "tsf %d %d rate %d\n", - le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK, - beacon->beacon_notify_hdr.failure_frame, - le32_to_cpu(beacon->ibss_mgr_status), - le32_to_cpu(beacon->high_tsf), le32_to_cpu(beacon->low_tsf), rate); -#endif - - il->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status); - -} - -/* Handle notification from uCode that card's power state is changing - * due to software, hardware, or critical temperature RFKILL */ -static void -il3945_hdl_card_state(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags); - unsigned long status = il->status; - - IL_WARN("Card state received: HW:%s SW:%s\n", - (flags & HW_CARD_DISABLED) ? "Kill" : "On", - (flags & SW_CARD_DISABLED) ? "Kill" : "On"); - - _il_wr(il, CSR_UCODE_DRV_GP1_SET, CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); - - if (flags & HW_CARD_DISABLED) - set_bit(S_RFKILL, &il->status); - else - clear_bit(S_RFKILL, &il->status); - - il_scan_cancel(il); - - if ((test_bit(S_RFKILL, &status) != - test_bit(S_RFKILL, &il->status))) - wiphy_rfkill_set_hw_state(il->hw->wiphy, - test_bit(S_RFKILL, &il->status)); - else - wake_up(&il->wait_command_queue); -} - -/** - * il3945_setup_handlers - Initialize Rx handler callbacks - * - * Setup the RX handlers for each of the reply types sent from the uCode - * to the host. - * - * This function chains into the hardware specific files for them to setup - * any hardware specific handlers as well. - */ -static void -il3945_setup_handlers(struct il_priv *il) -{ - il->handlers[N_ALIVE] = il3945_hdl_alive; - il->handlers[C_ADD_STA] = il3945_hdl_add_sta; - il->handlers[N_ERROR] = il_hdl_error; - il->handlers[N_CHANNEL_SWITCH] = il_hdl_csa; - il->handlers[N_SPECTRUM_MEASUREMENT] = il_hdl_spectrum_measurement; - il->handlers[N_PM_SLEEP] = il_hdl_pm_sleep; - il->handlers[N_PM_DEBUG_STATS] = il_hdl_pm_debug_stats; - il->handlers[N_BEACON] = il3945_hdl_beacon; - - /* - * The same handler is used for both the REPLY to a discrete - * stats request from the host as well as for the periodic - * stats notifications (after received beacons) from the uCode. - */ - il->handlers[C_STATS] = il3945_hdl_c_stats; - il->handlers[N_STATS] = il3945_hdl_stats; - - il_setup_rx_scan_handlers(il); - il->handlers[N_CARD_STATE] = il3945_hdl_card_state; - - /* Set up hardware specific Rx handlers */ - il3945_hw_handler_setup(il); -} - -/************************** RX-FUNCTIONS ****************************/ -/* - * Rx theory of operation - * - * The host allocates 32 DMA target addresses and passes the host address - * to the firmware at register IL_RFDS_TBL_LOWER + N * RFD_SIZE where N is - * 0 to 31 - * - * Rx Queue Indexes - * The host/firmware share two idx registers for managing the Rx buffers. - * - * The READ idx maps to the first position that the firmware may be writing - * to -- the driver can read up to (but not including) this position and get - * good data. - * The READ idx is managed by the firmware once the card is enabled. - * - * The WRITE idx maps to the last position the driver has read from -- the - * position preceding WRITE is the last slot the firmware can place a packet. - * - * The queue is empty (no good data) if WRITE = READ - 1, and is full if - * WRITE = READ. - * - * During initialization, the host sets up the READ queue position to the first - * IDX position, and WRITE to the last (READ - 1 wrapped) - * - * When the firmware places a packet in a buffer, it will advance the READ idx - * and fire the RX interrupt. The driver can then query the READ idx and - * process as many packets as possible, moving the WRITE idx forward as it - * resets the Rx queue buffers with new memory. - * - * The management in the driver is as follows: - * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When - * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled - * to replenish the iwl->rxq->rx_free. - * + In il3945_rx_replenish (scheduled) if 'processed' != 'read' then the - * iwl->rxq is replenished and the READ IDX is updated (updating the - * 'processed' and 'read' driver idxes as well) - * + A received packet is processed and handed to the kernel network stack, - * detached from the iwl->rxq. The driver 'processed' idx is updated. - * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free - * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ - * IDX is not incremented and iwl->status(RX_STALLED) is set. If there - * were enough free buffers and RX_STALLED is set it is cleared. - * - * - * Driver sequence: - * - * il3945_rx_replenish() Replenishes rx_free list from rx_used, and calls - * il3945_rx_queue_restock - * il3945_rx_queue_restock() Moves available buffers from rx_free into Rx - * queue, updates firmware pointers, and updates - * the WRITE idx. If insufficient rx_free buffers - * are available, schedules il3945_rx_replenish - * - * -- enable interrupts -- - * ISR - il3945_rx() Detach il_rx_bufs from pool up to the - * READ IDX, detaching the SKB from the pool. - * Moves the packet buffer from queue to rx_used. - * Calls il3945_rx_queue_restock to refill any empty - * slots. - * ... - * - */ - -/** - * il3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr - */ -static inline __le32 -il3945_dma_addr2rbd_ptr(struct il_priv *il, dma_addr_t dma_addr) -{ - return cpu_to_le32((u32) dma_addr); -} - -/** - * il3945_rx_queue_restock - refill RX queue from pre-allocated pool - * - * If there are slots in the RX queue that need to be restocked, - * and we have free pre-allocated buffers, fill the ranks as much - * as we can, pulling from rx_free. - * - * This moves the 'write' idx forward to catch up with 'processed', and - * also updates the memory address in the firmware to reference the new - * target buffer. - */ -static void -il3945_rx_queue_restock(struct il_priv *il) -{ - struct il_rx_queue *rxq = &il->rxq; - struct list_head *element; - struct il_rx_buf *rxb; - unsigned long flags; - int write; - - spin_lock_irqsave(&rxq->lock, flags); - write = rxq->write & ~0x7; - while (il_rx_queue_space(rxq) > 0 && rxq->free_count) { - /* Get next free Rx buffer, remove from free list */ - element = rxq->rx_free.next; - rxb = list_entry(element, struct il_rx_buf, list); - list_del(element); - - /* Point to Rx buffer via next RBD in circular buffer */ - rxq->bd[rxq->write] = - il3945_dma_addr2rbd_ptr(il, rxb->page_dma); - rxq->queue[rxq->write] = rxb; - rxq->write = (rxq->write + 1) & RX_QUEUE_MASK; - rxq->free_count--; - } - spin_unlock_irqrestore(&rxq->lock, flags); - /* If the pre-allocated buffer pool is dropping low, schedule to - * refill it */ - if (rxq->free_count <= RX_LOW_WATERMARK) - queue_work(il->workqueue, &il->rx_replenish); - - /* If we've added more space for the firmware to place data, tell it. - * Increment device's write pointer in multiples of 8. */ - if (rxq->write_actual != (rxq->write & ~0x7) || - abs(rxq->write - rxq->read) > 7) { - spin_lock_irqsave(&rxq->lock, flags); - rxq->need_update = 1; - spin_unlock_irqrestore(&rxq->lock, flags); - il_rx_queue_update_write_ptr(il, rxq); - } -} - -/** - * il3945_rx_replenish - Move all used packet from rx_used to rx_free - * - * When moving to rx_free an SKB is allocated for the slot. - * - * Also restock the Rx queue via il3945_rx_queue_restock. - * This is called as a scheduled work item (except for during initialization) - */ -static void -il3945_rx_allocate(struct il_priv *il, gfp_t priority) -{ - struct il_rx_queue *rxq = &il->rxq; - struct list_head *element; - struct il_rx_buf *rxb; - struct page *page; - dma_addr_t page_dma; - unsigned long flags; - gfp_t gfp_mask = priority; - - while (1) { - spin_lock_irqsave(&rxq->lock, flags); - if (list_empty(&rxq->rx_used)) { - spin_unlock_irqrestore(&rxq->lock, flags); - return; - } - spin_unlock_irqrestore(&rxq->lock, flags); - - if (rxq->free_count > RX_LOW_WATERMARK) - gfp_mask |= __GFP_NOWARN; - - if (il->hw_params.rx_page_order > 0) - gfp_mask |= __GFP_COMP; - - /* Alloc a new receive buffer */ - page = alloc_pages(gfp_mask, il->hw_params.rx_page_order); - if (!page) { - if (net_ratelimit()) - D_INFO("Failed to allocate SKB buffer.\n"); - if (rxq->free_count <= RX_LOW_WATERMARK && - net_ratelimit()) - IL_ERR("Failed to allocate SKB buffer with %0x." - "Only %u free buffers remaining.\n", - priority, rxq->free_count); - /* We don't reschedule replenish work here -- we will - * call the restock method and if it still needs - * more buffers it will schedule replenish */ - break; - } - - /* Get physical address of RB/SKB */ - page_dma = - pci_map_page(il->pci_dev, page, 0, - PAGE_SIZE << il->hw_params.rx_page_order, - PCI_DMA_FROMDEVICE); - - if (unlikely(pci_dma_mapping_error(il->pci_dev, page_dma))) { - __free_pages(page, il->hw_params.rx_page_order); - break; - } - - spin_lock_irqsave(&rxq->lock, flags); - - if (list_empty(&rxq->rx_used)) { - spin_unlock_irqrestore(&rxq->lock, flags); - pci_unmap_page(il->pci_dev, page_dma, - PAGE_SIZE << il->hw_params.rx_page_order, - PCI_DMA_FROMDEVICE); - __free_pages(page, il->hw_params.rx_page_order); - return; - } - - element = rxq->rx_used.next; - rxb = list_entry(element, struct il_rx_buf, list); - list_del(element); - - rxb->page = page; - rxb->page_dma = page_dma; - list_add_tail(&rxb->list, &rxq->rx_free); - rxq->free_count++; - il->alloc_rxb_page++; - - spin_unlock_irqrestore(&rxq->lock, flags); - } -} - -void -il3945_rx_queue_reset(struct il_priv *il, struct il_rx_queue *rxq) -{ - unsigned long flags; - int i; - spin_lock_irqsave(&rxq->lock, flags); - INIT_LIST_HEAD(&rxq->rx_free); - INIT_LIST_HEAD(&rxq->rx_used); - /* Fill the rx_used queue with _all_ of the Rx buffers */ - for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) { - /* In the reset function, these buffers may have been allocated - * to an SKB, so we need to unmap and free potential storage */ - if (rxq->pool[i].page != NULL) { - pci_unmap_page(il->pci_dev, rxq->pool[i].page_dma, - PAGE_SIZE << il->hw_params.rx_page_order, - PCI_DMA_FROMDEVICE); - __il_free_pages(il, rxq->pool[i].page); - rxq->pool[i].page = NULL; - } - list_add_tail(&rxq->pool[i].list, &rxq->rx_used); - } - - /* Set us so that we have processed and used all buffers, but have - * not restocked the Rx queue with fresh buffers */ - rxq->read = rxq->write = 0; - rxq->write_actual = 0; - rxq->free_count = 0; - spin_unlock_irqrestore(&rxq->lock, flags); -} - -void -il3945_rx_replenish(void *data) -{ - struct il_priv *il = data; - unsigned long flags; - - il3945_rx_allocate(il, GFP_KERNEL); - - spin_lock_irqsave(&il->lock, flags); - il3945_rx_queue_restock(il); - spin_unlock_irqrestore(&il->lock, flags); -} - -static void -il3945_rx_replenish_now(struct il_priv *il) -{ - il3945_rx_allocate(il, GFP_ATOMIC); - - il3945_rx_queue_restock(il); -} - -/* Assumes that the skb field of the buffers in 'pool' is kept accurate. - * If an SKB has been detached, the POOL needs to have its SKB set to NULL - * This free routine walks the list of POOL entries and if SKB is set to - * non NULL it is unmapped and freed - */ -static void -il3945_rx_queue_free(struct il_priv *il, struct il_rx_queue *rxq) -{ - int i; - for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) { - if (rxq->pool[i].page != NULL) { - pci_unmap_page(il->pci_dev, rxq->pool[i].page_dma, - PAGE_SIZE << il->hw_params.rx_page_order, - PCI_DMA_FROMDEVICE); - __il_free_pages(il, rxq->pool[i].page); - rxq->pool[i].page = NULL; - } - } - - dma_free_coherent(&il->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd, - rxq->bd_dma); - dma_free_coherent(&il->pci_dev->dev, sizeof(struct il_rb_status), - rxq->rb_stts, rxq->rb_stts_dma); - rxq->bd = NULL; - rxq->rb_stts = NULL; -} - -/* Convert linear signal-to-noise ratio into dB */ -static u8 ratio2dB[100] = { -/* 0 1 2 3 4 5 6 7 8 9 */ - 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */ - 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */ - 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */ - 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */ - 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */ - 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */ - 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */ - 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */ - 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */ - 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */ -}; - -/* Calculates a relative dB value from a ratio of linear - * (i.e. not dB) signal levels. - * Conversion assumes that levels are voltages (20*log), not powers (10*log). */ -int -il3945_calc_db_from_ratio(int sig_ratio) -{ - /* 1000:1 or higher just report as 60 dB */ - if (sig_ratio >= 1000) - return 60; - - /* 100:1 or higher, divide by 10 and use table, - * add 20 dB to make up for divide by 10 */ - if (sig_ratio >= 100) - return 20 + (int)ratio2dB[sig_ratio / 10]; - - /* We shouldn't see this */ - if (sig_ratio < 1) - return 0; - - /* Use table for ratios 1:1 - 99:1 */ - return (int)ratio2dB[sig_ratio]; -} - -/** - * il3945_rx_handle - Main entry function for receiving responses from uCode - * - * Uses the il->handlers callback function array to invoke - * the appropriate handlers, including command responses, - * frame-received notifications, and other notifications. - */ -static void -il3945_rx_handle(struct il_priv *il) -{ - struct il_rx_buf *rxb; - struct il_rx_pkt *pkt; - struct il_rx_queue *rxq = &il->rxq; - u32 r, i; - int reclaim; - unsigned long flags; - u8 fill_rx = 0; - u32 count = 8; - int total_empty = 0; - - /* uCode's read idx (stored in shared DRAM) indicates the last Rx - * buffer that the driver may process (last buffer filled by ucode). */ - r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF; - i = rxq->read; - - /* calculate total frames need to be restock after handling RX */ - total_empty = r - rxq->write_actual; - if (total_empty < 0) - total_empty += RX_QUEUE_SIZE; - - if (total_empty > (RX_QUEUE_SIZE / 2)) - fill_rx = 1; - /* Rx interrupt, but nothing sent from uCode */ - if (i == r) - D_RX("r = %d, i = %d\n", r, i); - - while (i != r) { - int len; - - rxb = rxq->queue[i]; - - /* If an RXB doesn't have a Rx queue slot associated with it, - * then a bug has been introduced in the queue refilling - * routines -- catch it here */ - BUG_ON(rxb == NULL); - - rxq->queue[i] = NULL; - - pci_unmap_page(il->pci_dev, rxb->page_dma, - PAGE_SIZE << il->hw_params.rx_page_order, - PCI_DMA_FROMDEVICE); - pkt = rxb_addr(rxb); - - len = le32_to_cpu(pkt->len_n_flags) & IL_RX_FRAME_SIZE_MSK; - len += sizeof(u32); /* account for status word */ - - reclaim = il_need_reclaim(il, pkt); - - /* Based on type of command response or notification, - * handle those that need handling via function in - * handlers table. See il3945_setup_handlers() */ - if (il->handlers[pkt->hdr.cmd]) { - D_RX("r = %d, i = %d, %s, 0x%02x\n", r, i, - il_get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd); - il->isr_stats.handlers[pkt->hdr.cmd]++; - il->handlers[pkt->hdr.cmd] (il, rxb); - } else { - /* No handling needed */ - D_RX("r %d i %d No handler needed for %s, 0x%02x\n", r, - i, il_get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd); - } - - /* - * XXX: After here, we should always check rxb->page - * against NULL before touching it or its virtual - * memory (pkt). Because some handler might have - * already taken or freed the pages. - */ - - if (reclaim) { - /* Invoke any callbacks, transfer the buffer to caller, - * and fire off the (possibly) blocking il_send_cmd() - * as we reclaim the driver command queue */ - if (rxb->page) - il_tx_cmd_complete(il, rxb); - else - IL_WARN("Claim null rxb?\n"); - } - - /* Reuse the page if possible. For notification packets and - * SKBs that fail to Rx correctly, add them back into the - * rx_free list for reuse later. */ - spin_lock_irqsave(&rxq->lock, flags); - if (rxb->page != NULL) { - rxb->page_dma = - pci_map_page(il->pci_dev, rxb->page, 0, - PAGE_SIZE << il->hw_params. - rx_page_order, PCI_DMA_FROMDEVICE); - if (unlikely(pci_dma_mapping_error(il->pci_dev, - rxb->page_dma))) { - __il_free_pages(il, rxb->page); - rxb->page = NULL; - list_add_tail(&rxb->list, &rxq->rx_used); - } else { - list_add_tail(&rxb->list, &rxq->rx_free); - rxq->free_count++; - } - } else - list_add_tail(&rxb->list, &rxq->rx_used); - - spin_unlock_irqrestore(&rxq->lock, flags); - - i = (i + 1) & RX_QUEUE_MASK; - /* If there are a lot of unused frames, - * restock the Rx queue so ucode won't assert. */ - if (fill_rx) { - count++; - if (count >= 8) { - rxq->read = i; - il3945_rx_replenish_now(il); - count = 0; - } - } - } - - /* Backtrack one entry */ - rxq->read = i; - if (fill_rx) - il3945_rx_replenish_now(il); - else - il3945_rx_queue_restock(il); -} - -/* call this function to flush any scheduled tasklet */ -static inline void -il3945_synchronize_irq(struct il_priv *il) -{ - /* wait to make sure we flush pending tasklet */ - synchronize_irq(il->pci_dev->irq); - tasklet_kill(&il->irq_tasklet); -} - -static const char * -il3945_desc_lookup(int i) -{ - switch (i) { - case 1: - return "FAIL"; - case 2: - return "BAD_PARAM"; - case 3: - return "BAD_CHECKSUM"; - case 4: - return "NMI_INTERRUPT"; - case 5: - return "SYSASSERT"; - case 6: - return "FATAL_ERROR"; - } - - return "UNKNOWN"; -} - -#define ERROR_START_OFFSET (1 * sizeof(u32)) -#define ERROR_ELEM_SIZE (7 * sizeof(u32)) - -void -il3945_dump_nic_error_log(struct il_priv *il) -{ - u32 i; - u32 desc, time, count, base, data1; - u32 blink1, blink2, ilink1, ilink2; - - base = le32_to_cpu(il->card_alive.error_event_table_ptr); - - if (!il3945_hw_valid_rtc_data_addr(base)) { - IL_ERR("Not valid error log pointer 0x%08X\n", base); - return; - } - - count = il_read_targ_mem(il, base); - - if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) { - IL_ERR("Start IWL Error Log Dump:\n"); - IL_ERR("Status: 0x%08lX, count: %d\n", il->status, count); - } - - IL_ERR("Desc Time asrtPC blink2 " - "ilink1 nmiPC Line\n"); - for (i = ERROR_START_OFFSET; - i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET; - i += ERROR_ELEM_SIZE) { - desc = il_read_targ_mem(il, base + i); - time = il_read_targ_mem(il, base + i + 1 * sizeof(u32)); - blink1 = il_read_targ_mem(il, base + i + 2 * sizeof(u32)); - blink2 = il_read_targ_mem(il, base + i + 3 * sizeof(u32)); - ilink1 = il_read_targ_mem(il, base + i + 4 * sizeof(u32)); - ilink2 = il_read_targ_mem(il, base + i + 5 * sizeof(u32)); - data1 = il_read_targ_mem(il, base + i + 6 * sizeof(u32)); - - IL_ERR("%-13s (0x%X) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n", - il3945_desc_lookup(desc), desc, time, blink1, blink2, - ilink1, ilink2, data1); - } -} - -static void -il3945_irq_tasklet(struct il_priv *il) -{ - u32 inta, handled = 0; - u32 inta_fh; - unsigned long flags; -#ifdef CONFIG_IWLEGACY_DEBUG - u32 inta_mask; -#endif - - spin_lock_irqsave(&il->lock, flags); - - /* Ack/clear/reset pending uCode interrupts. - * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS, - * and will clear only when CSR_FH_INT_STATUS gets cleared. */ - inta = _il_rd(il, CSR_INT); - _il_wr(il, CSR_INT, inta); - - /* Ack/clear/reset pending flow-handler (DMA) interrupts. - * Any new interrupts that happen after this, either while we're - * in this tasklet, or later, will show up in next ISR/tasklet. */ - inta_fh = _il_rd(il, CSR_FH_INT_STATUS); - _il_wr(il, CSR_FH_INT_STATUS, inta_fh); - -#ifdef CONFIG_IWLEGACY_DEBUG - if (il_get_debug_level(il) & IL_DL_ISR) { - /* just for debug */ - inta_mask = _il_rd(il, CSR_INT_MASK); - D_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", inta, - inta_mask, inta_fh); - } -#endif - - spin_unlock_irqrestore(&il->lock, flags); - - /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not - * atomic, make sure that inta covers all the interrupts that - * we've discovered, even if FH interrupt came in just after - * reading CSR_INT. */ - if (inta_fh & CSR39_FH_INT_RX_MASK) - inta |= CSR_INT_BIT_FH_RX; - if (inta_fh & CSR39_FH_INT_TX_MASK) - inta |= CSR_INT_BIT_FH_TX; - - /* Now service all interrupt bits discovered above. */ - if (inta & CSR_INT_BIT_HW_ERR) { - IL_ERR("Hardware error detected. Restarting.\n"); - - /* Tell the device to stop sending interrupts */ - il_disable_interrupts(il); - - il->isr_stats.hw++; - il_irq_handle_error(il); - - handled |= CSR_INT_BIT_HW_ERR; - - return; - } -#ifdef CONFIG_IWLEGACY_DEBUG - if (il_get_debug_level(il) & (IL_DL_ISR)) { - /* NIC fires this, but we don't use it, redundant with WAKEUP */ - if (inta & CSR_INT_BIT_SCD) { - D_ISR("Scheduler finished to transmit " - "the frame/frames.\n"); - il->isr_stats.sch++; - } - - /* Alive notification via Rx interrupt will do the real work */ - if (inta & CSR_INT_BIT_ALIVE) { - D_ISR("Alive interrupt\n"); - il->isr_stats.alive++; - } - } -#endif - /* Safely ignore these bits for debug checks below */ - inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE); - - /* Error detected by uCode */ - if (inta & CSR_INT_BIT_SW_ERR) { - IL_ERR("Microcode SW error detected. " "Restarting 0x%X.\n", - inta); - il->isr_stats.sw++; - il_irq_handle_error(il); - handled |= CSR_INT_BIT_SW_ERR; - } - - /* uCode wakes up after power-down sleep */ - if (inta & CSR_INT_BIT_WAKEUP) { - D_ISR("Wakeup interrupt\n"); - il_rx_queue_update_write_ptr(il, &il->rxq); - - spin_lock_irqsave(&il->lock, flags); - il_txq_update_write_ptr(il, &il->txq[0]); - il_txq_update_write_ptr(il, &il->txq[1]); - il_txq_update_write_ptr(il, &il->txq[2]); - il_txq_update_write_ptr(il, &il->txq[3]); - il_txq_update_write_ptr(il, &il->txq[4]); - spin_unlock_irqrestore(&il->lock, flags); - - il->isr_stats.wakeup++; - handled |= CSR_INT_BIT_WAKEUP; - } - - /* All uCode command responses, including Tx command responses, - * Rx "responses" (frame-received notification), and other - * notifications from uCode come through here*/ - if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) { - il3945_rx_handle(il); - il->isr_stats.rx++; - handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX); - } - - if (inta & CSR_INT_BIT_FH_TX) { - D_ISR("Tx interrupt\n"); - il->isr_stats.tx++; - - _il_wr(il, CSR_FH_INT_STATUS, (1 << 6)); - il_wr(il, FH39_TCSR_CREDIT(FH39_SRVC_CHNL), 0x0); - handled |= CSR_INT_BIT_FH_TX; - } - - if (inta & ~handled) { - IL_ERR("Unhandled INTA bits 0x%08x\n", inta & ~handled); - il->isr_stats.unhandled++; - } - - if (inta & ~il->inta_mask) { - IL_WARN("Disabled INTA bits 0x%08x were pending\n", - inta & ~il->inta_mask); - IL_WARN(" with inta_fh = 0x%08x\n", inta_fh); - } - - /* Re-enable all interrupts */ - /* only Re-enable if disabled by irq */ - if (test_bit(S_INT_ENABLED, &il->status)) - il_enable_interrupts(il); - -#ifdef CONFIG_IWLEGACY_DEBUG - if (il_get_debug_level(il) & (IL_DL_ISR)) { - inta = _il_rd(il, CSR_INT); - inta_mask = _il_rd(il, CSR_INT_MASK); - inta_fh = _il_rd(il, CSR_FH_INT_STATUS); - D_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, " - "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags); - } -#endif -} - -static int -il3945_get_channels_for_scan(struct il_priv *il, enum ieee80211_band band, - u8 is_active, u8 n_probes, - struct il3945_scan_channel *scan_ch, - struct ieee80211_vif *vif) -{ - struct ieee80211_channel *chan; - const struct ieee80211_supported_band *sband; - const struct il_channel_info *ch_info; - u16 passive_dwell = 0; - u16 active_dwell = 0; - int added, i; - - sband = il_get_hw_mode(il, band); - if (!sband) - return 0; - - active_dwell = il_get_active_dwell_time(il, band, n_probes); - passive_dwell = il_get_passive_dwell_time(il, band, vif); - - if (passive_dwell <= active_dwell) - passive_dwell = active_dwell + 1; - - for (i = 0, added = 0; i < il->scan_request->n_channels; i++) { - chan = il->scan_request->channels[i]; - - if (chan->band != band) - continue; - - scan_ch->channel = chan->hw_value; - - ch_info = il_get_channel_info(il, band, scan_ch->channel); - if (!il_is_channel_valid(ch_info)) { - D_SCAN("Channel %d is INVALID for this band.\n", - scan_ch->channel); - continue; - } - - scan_ch->active_dwell = cpu_to_le16(active_dwell); - scan_ch->passive_dwell = cpu_to_le16(passive_dwell); - /* If passive , set up for auto-switch - * and use long active_dwell time. - */ - if (!is_active || il_is_channel_passive(ch_info) || - (chan->flags & IEEE80211_CHAN_NO_IR)) { - scan_ch->type = 0; /* passive */ - if (IL_UCODE_API(il->ucode_ver) == 1) - scan_ch->active_dwell = - cpu_to_le16(passive_dwell - 1); - } else { - scan_ch->type = 1; /* active */ - } - - /* Set direct probe bits. These may be used both for active - * scan channels (probes gets sent right away), - * or for passive channels (probes get se sent only after - * hearing clear Rx packet).*/ - if (IL_UCODE_API(il->ucode_ver) >= 2) { - if (n_probes) - scan_ch->type |= IL39_SCAN_PROBE_MASK(n_probes); - } else { - /* uCode v1 does not allow setting direct probe bits on - * passive channel. */ - if ((scan_ch->type & 1) && n_probes) - scan_ch->type |= IL39_SCAN_PROBE_MASK(n_probes); - } - - /* Set txpower levels to defaults */ - scan_ch->tpc.dsp_atten = 110; - /* scan_pwr_info->tpc.dsp_atten; */ - - /*scan_pwr_info->tpc.tx_gain; */ - if (band == IEEE80211_BAND_5GHZ) - scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3; - else { - scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3)); - /* NOTE: if we were doing 6Mb OFDM for scans we'd use - * power level: - * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3; - */ - } - - D_SCAN("Scanning %d [%s %d]\n", scan_ch->channel, - (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE", - (scan_ch->type & 1) ? active_dwell : passive_dwell); - - scan_ch++; - added++; - } - - D_SCAN("total channels to scan %d\n", added); - return added; -} - -static void -il3945_init_hw_rates(struct il_priv *il, struct ieee80211_rate *rates) -{ - int i; - - for (i = 0; i < RATE_COUNT_LEGACY; i++) { - rates[i].bitrate = il3945_rates[i].ieee * 5; - rates[i].hw_value = i; /* Rate scaling will work on idxes */ - rates[i].hw_value_short = i; - rates[i].flags = 0; - if (i > IL39_LAST_OFDM_RATE || i < IL_FIRST_OFDM_RATE) { - /* - * If CCK != 1M then set short preamble rate flag. - */ - rates[i].flags |= - (il3945_rates[i].plcp == - 10) ? 0 : IEEE80211_RATE_SHORT_PREAMBLE; - } - } -} - -/****************************************************************************** - * - * uCode download functions - * - ******************************************************************************/ - -static void -il3945_dealloc_ucode_pci(struct il_priv *il) -{ - il_free_fw_desc(il->pci_dev, &il->ucode_code); - il_free_fw_desc(il->pci_dev, &il->ucode_data); - il_free_fw_desc(il->pci_dev, &il->ucode_data_backup); - il_free_fw_desc(il->pci_dev, &il->ucode_init); - il_free_fw_desc(il->pci_dev, &il->ucode_init_data); - il_free_fw_desc(il->pci_dev, &il->ucode_boot); -} - -/** - * il3945_verify_inst_full - verify runtime uCode image in card vs. host, - * looking at all data. - */ -static int -il3945_verify_inst_full(struct il_priv *il, __le32 * image, u32 len) -{ - u32 val; - u32 save_len = len; - int rc = 0; - u32 errcnt; - - D_INFO("ucode inst image size is %u\n", len); - - il_wr(il, HBUS_TARG_MEM_RADDR, IL39_RTC_INST_LOWER_BOUND); - - errcnt = 0; - for (; len > 0; len -= sizeof(u32), image++) { - /* read data comes through single port, auto-incr addr */ - /* NOTE: Use the debugless read so we don't flood kernel log - * if IL_DL_IO is set */ - val = _il_rd(il, HBUS_TARG_MEM_RDAT); - if (val != le32_to_cpu(*image)) { - IL_ERR("uCode INST section is invalid at " - "offset 0x%x, is 0x%x, s/b 0x%x\n", - save_len - len, val, le32_to_cpu(*image)); - rc = -EIO; - errcnt++; - if (errcnt >= 20) - break; - } - } - - if (!errcnt) - D_INFO("ucode image in INSTRUCTION memory is good\n"); - - return rc; -} - -/** - * il3945_verify_inst_sparse - verify runtime uCode image in card vs. host, - * using sample data 100 bytes apart. If these sample points are good, - * it's a pretty good bet that everything between them is good, too. - */ -static int -il3945_verify_inst_sparse(struct il_priv *il, __le32 * image, u32 len) -{ - u32 val; - int rc = 0; - u32 errcnt = 0; - u32 i; - - D_INFO("ucode inst image size is %u\n", len); - - for (i = 0; i < len; i += 100, image += 100 / sizeof(u32)) { - /* read data comes through single port, auto-incr addr */ - /* NOTE: Use the debugless read so we don't flood kernel log - * if IL_DL_IO is set */ - il_wr(il, HBUS_TARG_MEM_RADDR, i + IL39_RTC_INST_LOWER_BOUND); - val = _il_rd(il, HBUS_TARG_MEM_RDAT); - if (val != le32_to_cpu(*image)) { -#if 0 /* Enable this if you want to see details */ - IL_ERR("uCode INST section is invalid at " - "offset 0x%x, is 0x%x, s/b 0x%x\n", i, val, - *image); -#endif - rc = -EIO; - errcnt++; - if (errcnt >= 3) - break; - } - } - - return rc; -} - -/** - * il3945_verify_ucode - determine which instruction image is in SRAM, - * and verify its contents - */ -static int -il3945_verify_ucode(struct il_priv *il) -{ - __le32 *image; - u32 len; - int rc = 0; - - /* Try bootstrap */ - image = (__le32 *) il->ucode_boot.v_addr; - len = il->ucode_boot.len; - rc = il3945_verify_inst_sparse(il, image, len); - if (rc == 0) { - D_INFO("Bootstrap uCode is good in inst SRAM\n"); - return 0; - } - - /* Try initialize */ - image = (__le32 *) il->ucode_init.v_addr; - len = il->ucode_init.len; - rc = il3945_verify_inst_sparse(il, image, len); - if (rc == 0) { - D_INFO("Initialize uCode is good in inst SRAM\n"); - return 0; - } - - /* Try runtime/protocol */ - image = (__le32 *) il->ucode_code.v_addr; - len = il->ucode_code.len; - rc = il3945_verify_inst_sparse(il, image, len); - if (rc == 0) { - D_INFO("Runtime uCode is good in inst SRAM\n"); - return 0; - } - - IL_ERR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n"); - - /* Since nothing seems to match, show first several data entries in - * instruction SRAM, so maybe visual inspection will give a clue. - * Selection of bootstrap image (vs. other images) is arbitrary. */ - image = (__le32 *) il->ucode_boot.v_addr; - len = il->ucode_boot.len; - rc = il3945_verify_inst_full(il, image, len); - - return rc; -} - -static void -il3945_nic_start(struct il_priv *il) -{ - /* Remove all resets to allow NIC to operate */ - _il_wr(il, CSR_RESET, 0); -} - -#define IL3945_UCODE_GET(item) \ -static u32 il3945_ucode_get_##item(const struct il_ucode_header *ucode)\ -{ \ - return le32_to_cpu(ucode->v1.item); \ -} - -static u32 -il3945_ucode_get_header_size(u32 api_ver) -{ - return 24; -} - -static u8 * -il3945_ucode_get_data(const struct il_ucode_header *ucode) -{ - return (u8 *) ucode->v1.data; -} - -IL3945_UCODE_GET(inst_size); -IL3945_UCODE_GET(data_size); -IL3945_UCODE_GET(init_size); -IL3945_UCODE_GET(init_data_size); -IL3945_UCODE_GET(boot_size); - -/** - * il3945_read_ucode - Read uCode images from disk file. - * - * Copy into buffers for card to fetch via bus-mastering - */ -static int -il3945_read_ucode(struct il_priv *il) -{ - const struct il_ucode_header *ucode; - int ret = -EINVAL, idx; - const struct firmware *ucode_raw; - /* firmware file name contains uCode/driver compatibility version */ - const char *name_pre = il->cfg->fw_name_pre; - const unsigned int api_max = il->cfg->ucode_api_max; - const unsigned int api_min = il->cfg->ucode_api_min; - char buf[25]; - u8 *src; - size_t len; - u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size; - - /* Ask kernel firmware_class module to get the boot firmware off disk. - * request_firmware() is synchronous, file is in memory on return. */ - for (idx = api_max; idx >= api_min; idx--) { - sprintf(buf, "%s%u%s", name_pre, idx, ".ucode"); - ret = request_firmware(&ucode_raw, buf, &il->pci_dev->dev); - if (ret < 0) { - IL_ERR("%s firmware file req failed: %d\n", buf, ret); - if (ret == -ENOENT) - continue; - else - goto error; - } else { - if (idx < api_max) - IL_ERR("Loaded firmware %s, " - "which is deprecated. " - " Please use API v%u instead.\n", buf, - api_max); - D_INFO("Got firmware '%s' file " - "(%zd bytes) from disk\n", buf, ucode_raw->size); - break; - } - } - - if (ret < 0) - goto error; - - /* Make sure that we got at least our header! */ - if (ucode_raw->size < il3945_ucode_get_header_size(1)) { - IL_ERR("File size way too small!\n"); - ret = -EINVAL; - goto err_release; - } - - /* Data from ucode file: header followed by uCode images */ - ucode = (struct il_ucode_header *)ucode_raw->data; - - il->ucode_ver = le32_to_cpu(ucode->ver); - api_ver = IL_UCODE_API(il->ucode_ver); - inst_size = il3945_ucode_get_inst_size(ucode); - data_size = il3945_ucode_get_data_size(ucode); - init_size = il3945_ucode_get_init_size(ucode); - init_data_size = il3945_ucode_get_init_data_size(ucode); - boot_size = il3945_ucode_get_boot_size(ucode); - src = il3945_ucode_get_data(ucode); - - /* api_ver should match the api version forming part of the - * firmware filename ... but we don't check for that and only rely - * on the API version read from firmware header from here on forward */ - - if (api_ver < api_min || api_ver > api_max) { - IL_ERR("Driver unable to support your firmware API. " - "Driver supports v%u, firmware is v%u.\n", api_max, - api_ver); - il->ucode_ver = 0; - ret = -EINVAL; - goto err_release; - } - if (api_ver != api_max) - IL_ERR("Firmware has old API version. Expected %u, " - "got %u. New firmware can be obtained " - "from http://www.intellinuxwireless.org.\n", api_max, - api_ver); - - IL_INFO("loaded firmware version %u.%u.%u.%u\n", - IL_UCODE_MAJOR(il->ucode_ver), IL_UCODE_MINOR(il->ucode_ver), - IL_UCODE_API(il->ucode_ver), IL_UCODE_SERIAL(il->ucode_ver)); - - snprintf(il->hw->wiphy->fw_version, sizeof(il->hw->wiphy->fw_version), - "%u.%u.%u.%u", IL_UCODE_MAJOR(il->ucode_ver), - IL_UCODE_MINOR(il->ucode_ver), IL_UCODE_API(il->ucode_ver), - IL_UCODE_SERIAL(il->ucode_ver)); - - D_INFO("f/w package hdr ucode version raw = 0x%x\n", il->ucode_ver); - D_INFO("f/w package hdr runtime inst size = %u\n", inst_size); - D_INFO("f/w package hdr runtime data size = %u\n", data_size); - D_INFO("f/w package hdr init inst size = %u\n", init_size); - D_INFO("f/w package hdr init data size = %u\n", init_data_size); - D_INFO("f/w package hdr boot inst size = %u\n", boot_size); - - /* Verify size of file vs. image size info in file's header */ - if (ucode_raw->size != - il3945_ucode_get_header_size(api_ver) + inst_size + data_size + - init_size + init_data_size + boot_size) { - - D_INFO("uCode file size %zd does not match expected size\n", - ucode_raw->size); - ret = -EINVAL; - goto err_release; - } - - /* Verify that uCode images will fit in card's SRAM */ - if (inst_size > IL39_MAX_INST_SIZE) { - D_INFO("uCode instr len %d too large to fit in\n", inst_size); - ret = -EINVAL; - goto err_release; - } - - if (data_size > IL39_MAX_DATA_SIZE) { - D_INFO("uCode data len %d too large to fit in\n", data_size); - ret = -EINVAL; - goto err_release; - } - if (init_size > IL39_MAX_INST_SIZE) { - D_INFO("uCode init instr len %d too large to fit in\n", - init_size); - ret = -EINVAL; - goto err_release; - } - if (init_data_size > IL39_MAX_DATA_SIZE) { - D_INFO("uCode init data len %d too large to fit in\n", - init_data_size); - ret = -EINVAL; - goto err_release; - } - if (boot_size > IL39_MAX_BSM_SIZE) { - D_INFO("uCode boot instr len %d too large to fit in\n", - boot_size); - ret = -EINVAL; - goto err_release; - } - - /* Allocate ucode buffers for card's bus-master loading ... */ - - /* Runtime instructions and 2 copies of data: - * 1) unmodified from disk - * 2) backup cache for save/restore during power-downs */ - il->ucode_code.len = inst_size; - il_alloc_fw_desc(il->pci_dev, &il->ucode_code); - - il->ucode_data.len = data_size; - il_alloc_fw_desc(il->pci_dev, &il->ucode_data); - - il->ucode_data_backup.len = data_size; - il_alloc_fw_desc(il->pci_dev, &il->ucode_data_backup); - - if (!il->ucode_code.v_addr || !il->ucode_data.v_addr || - !il->ucode_data_backup.v_addr) - goto err_pci_alloc; - - /* Initialization instructions and data */ - if (init_size && init_data_size) { - il->ucode_init.len = init_size; - il_alloc_fw_desc(il->pci_dev, &il->ucode_init); - - il->ucode_init_data.len = init_data_size; - il_alloc_fw_desc(il->pci_dev, &il->ucode_init_data); - - if (!il->ucode_init.v_addr || !il->ucode_init_data.v_addr) - goto err_pci_alloc; - } - - /* Bootstrap (instructions only, no data) */ - if (boot_size) { - il->ucode_boot.len = boot_size; - il_alloc_fw_desc(il->pci_dev, &il->ucode_boot); - - if (!il->ucode_boot.v_addr) - goto err_pci_alloc; - } - - /* Copy images into buffers for card's bus-master reads ... */ - - /* Runtime instructions (first block of data in file) */ - len = inst_size; - D_INFO("Copying (but not loading) uCode instr len %zd\n", len); - memcpy(il->ucode_code.v_addr, src, len); - src += len; - - D_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n", - il->ucode_code.v_addr, (u32) il->ucode_code.p_addr); - - /* Runtime data (2nd block) - * NOTE: Copy into backup buffer will be done in il3945_up() */ - len = data_size; - D_INFO("Copying (but not loading) uCode data len %zd\n", len); - memcpy(il->ucode_data.v_addr, src, len); - memcpy(il->ucode_data_backup.v_addr, src, len); - src += len; - - /* Initialization instructions (3rd block) */ - if (init_size) { - len = init_size; - D_INFO("Copying (but not loading) init instr len %zd\n", len); - memcpy(il->ucode_init.v_addr, src, len); - src += len; - } - - /* Initialization data (4th block) */ - if (init_data_size) { - len = init_data_size; - D_INFO("Copying (but not loading) init data len %zd\n", len); - memcpy(il->ucode_init_data.v_addr, src, len); - src += len; - } - - /* Bootstrap instructions (5th block) */ - len = boot_size; - D_INFO("Copying (but not loading) boot instr len %zd\n", len); - memcpy(il->ucode_boot.v_addr, src, len); - - /* We have our copies now, allow OS release its copies */ - release_firmware(ucode_raw); - return 0; - -err_pci_alloc: - IL_ERR("failed to allocate pci memory\n"); - ret = -ENOMEM; - il3945_dealloc_ucode_pci(il); - -err_release: - release_firmware(ucode_raw); - -error: - return ret; -} - -/** - * il3945_set_ucode_ptrs - Set uCode address location - * - * Tell initialization uCode where to find runtime uCode. - * - * BSM registers initially contain pointers to initialization uCode. - * We need to replace them to load runtime uCode inst and data, - * and to save runtime data when powering down. - */ -static int -il3945_set_ucode_ptrs(struct il_priv *il) -{ - dma_addr_t pinst; - dma_addr_t pdata; - - /* bits 31:0 for 3945 */ - pinst = il->ucode_code.p_addr; - pdata = il->ucode_data_backup.p_addr; - - /* Tell bootstrap uCode where to find image to load */ - il_wr_prph(il, BSM_DRAM_INST_PTR_REG, pinst); - il_wr_prph(il, BSM_DRAM_DATA_PTR_REG, pdata); - il_wr_prph(il, BSM_DRAM_DATA_BYTECOUNT_REG, il->ucode_data.len); - - /* Inst byte count must be last to set up, bit 31 signals uCode - * that all new ptr/size info is in place */ - il_wr_prph(il, BSM_DRAM_INST_BYTECOUNT_REG, - il->ucode_code.len | BSM_DRAM_INST_LOAD); - - D_INFO("Runtime uCode pointers are set.\n"); - - return 0; -} - -/** - * il3945_init_alive_start - Called after N_ALIVE notification received - * - * Called after N_ALIVE notification received from "initialize" uCode. - * - * Tell "initialize" uCode to go ahead and load the runtime uCode. - */ -static void -il3945_init_alive_start(struct il_priv *il) -{ - /* Check alive response for "valid" sign from uCode */ - if (il->card_alive_init.is_valid != UCODE_VALID_OK) { - /* We had an error bringing up the hardware, so take it - * all the way back down so we can try again */ - D_INFO("Initialize Alive failed.\n"); - goto restart; - } - - /* Bootstrap uCode has loaded initialize uCode ... verify inst image. - * This is a paranoid check, because we would not have gotten the - * "initialize" alive if code weren't properly loaded. */ - if (il3945_verify_ucode(il)) { - /* Runtime instruction load was bad; - * take it all the way back down so we can try again */ - D_INFO("Bad \"initialize\" uCode load.\n"); - goto restart; - } - - /* Send pointers to protocol/runtime uCode image ... init code will - * load and launch runtime uCode, which will send us another "Alive" - * notification. */ - D_INFO("Initialization Alive received.\n"); - if (il3945_set_ucode_ptrs(il)) { - /* Runtime instruction load won't happen; - * take it all the way back down so we can try again */ - D_INFO("Couldn't set up uCode pointers.\n"); - goto restart; - } - return; - -restart: - queue_work(il->workqueue, &il->restart); -} - -/** - * il3945_alive_start - called after N_ALIVE notification received - * from protocol/runtime uCode (initialization uCode's - * Alive gets handled by il3945_init_alive_start()). - */ -static void -il3945_alive_start(struct il_priv *il) -{ - int thermal_spin = 0; - u32 rfkill; - - D_INFO("Runtime Alive received.\n"); - - if (il->card_alive.is_valid != UCODE_VALID_OK) { - /* We had an error bringing up the hardware, so take it - * all the way back down so we can try again */ - D_INFO("Alive failed.\n"); - goto restart; - } - - /* Initialize uCode has loaded Runtime uCode ... verify inst image. - * This is a paranoid check, because we would not have gotten the - * "runtime" alive if code weren't properly loaded. */ - if (il3945_verify_ucode(il)) { - /* Runtime instruction load was bad; - * take it all the way back down so we can try again */ - D_INFO("Bad runtime uCode load.\n"); - goto restart; - } - - rfkill = il_rd_prph(il, APMG_RFKILL_REG); - D_INFO("RFKILL status: 0x%x\n", rfkill); - - if (rfkill & 0x1) { - clear_bit(S_RFKILL, &il->status); - /* if RFKILL is not on, then wait for thermal - * sensor in adapter to kick in */ - while (il3945_hw_get_temperature(il) == 0) { - thermal_spin++; - udelay(10); - } - - if (thermal_spin) - D_INFO("Thermal calibration took %dus\n", - thermal_spin * 10); - } else - set_bit(S_RFKILL, &il->status); - - /* After the ALIVE response, we can send commands to 3945 uCode */ - set_bit(S_ALIVE, &il->status); - - /* Enable watchdog to monitor the driver tx queues */ - il_setup_watchdog(il); - - if (il_is_rfkill(il)) - return; - - ieee80211_wake_queues(il->hw); - - il->active_rate = RATES_MASK_3945; - - il_power_update_mode(il, true); - - if (il_is_associated(il)) { - struct il3945_rxon_cmd *active_rxon = - (struct il3945_rxon_cmd *)(&il->active); - - il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; - active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; - } else { - /* Initialize our rx_config data */ - il_connection_init_rx_config(il); - } - - /* Configure Bluetooth device coexistence support */ - il_send_bt_config(il); - - set_bit(S_READY, &il->status); - - /* Configure the adapter for unassociated operation */ - il3945_commit_rxon(il); - - il3945_reg_txpower_periodic(il); - - D_INFO("ALIVE processing complete.\n"); - wake_up(&il->wait_command_queue); - - return; - -restart: - queue_work(il->workqueue, &il->restart); -} - -static void il3945_cancel_deferred_work(struct il_priv *il); - -static void -__il3945_down(struct il_priv *il) -{ - unsigned long flags; - int exit_pending; - - D_INFO(DRV_NAME " is going down\n"); - - il_scan_cancel_timeout(il, 200); - - exit_pending = test_and_set_bit(S_EXIT_PENDING, &il->status); - - /* Stop TX queues watchdog. We need to have S_EXIT_PENDING bit set - * to prevent rearm timer */ - del_timer_sync(&il->watchdog); - - /* Station information will now be cleared in device */ - il_clear_ucode_stations(il); - il_dealloc_bcast_stations(il); - il_clear_driver_stations(il); - - /* Unblock any waiting calls */ - wake_up_all(&il->wait_command_queue); - - /* Wipe out the EXIT_PENDING status bit if we are not actually - * exiting the module */ - if (!exit_pending) - clear_bit(S_EXIT_PENDING, &il->status); - - /* stop and reset the on-board processor */ - _il_wr(il, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); - - /* tell the device to stop sending interrupts */ - spin_lock_irqsave(&il->lock, flags); - il_disable_interrupts(il); - spin_unlock_irqrestore(&il->lock, flags); - il3945_synchronize_irq(il); - - if (il->mac80211_registered) - ieee80211_stop_queues(il->hw); - - /* If we have not previously called il3945_init() then - * clear all bits but the RF Kill bits and return */ - if (!il_is_init(il)) { - il->status = - test_bit(S_RFKILL, &il->status) << S_RFKILL | - test_bit(S_GEO_CONFIGURED, &il->status) << S_GEO_CONFIGURED | - test_bit(S_EXIT_PENDING, &il->status) << S_EXIT_PENDING; - goto exit; - } - - /* ...otherwise clear out all the status bits but the RF Kill - * bit and continue taking the NIC down. */ - il->status &= - test_bit(S_RFKILL, &il->status) << S_RFKILL | - test_bit(S_GEO_CONFIGURED, &il->status) << S_GEO_CONFIGURED | - test_bit(S_FW_ERROR, &il->status) << S_FW_ERROR | - test_bit(S_EXIT_PENDING, &il->status) << S_EXIT_PENDING; - - /* - * We disabled and synchronized interrupt, and priv->mutex is taken, so - * here is the only thread which will program device registers, but - * still have lockdep assertions, so we are taking reg_lock. - */ - spin_lock_irq(&il->reg_lock); - /* FIXME: il_grab_nic_access if rfkill is off ? */ - - il3945_hw_txq_ctx_stop(il); - il3945_hw_rxq_stop(il); - /* Power-down device's busmaster DMA clocks */ - _il_wr_prph(il, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT); - udelay(5); - /* Stop the device, and put it in low power state */ - _il_apm_stop(il); - - spin_unlock_irq(&il->reg_lock); - - il3945_hw_txq_ctx_free(il); -exit: - memset(&il->card_alive, 0, sizeof(struct il_alive_resp)); - - if (il->beacon_skb) - dev_kfree_skb(il->beacon_skb); - il->beacon_skb = NULL; - - /* clear out any free frames */ - il3945_clear_free_frames(il); -} - -static void -il3945_down(struct il_priv *il) -{ - mutex_lock(&il->mutex); - __il3945_down(il); - mutex_unlock(&il->mutex); - - il3945_cancel_deferred_work(il); -} - -#define MAX_HW_RESTARTS 5 - -static int -il3945_alloc_bcast_station(struct il_priv *il) -{ - unsigned long flags; - u8 sta_id; - - spin_lock_irqsave(&il->sta_lock, flags); - sta_id = il_prep_station(il, il_bcast_addr, false, NULL); - if (sta_id == IL_INVALID_STATION) { - IL_ERR("Unable to prepare broadcast station\n"); - spin_unlock_irqrestore(&il->sta_lock, flags); - - return -EINVAL; - } - - il->stations[sta_id].used |= IL_STA_DRIVER_ACTIVE; - il->stations[sta_id].used |= IL_STA_BCAST; - spin_unlock_irqrestore(&il->sta_lock, flags); - - return 0; -} - -static int -__il3945_up(struct il_priv *il) -{ - int rc, i; - - rc = il3945_alloc_bcast_station(il); - if (rc) - return rc; - - if (test_bit(S_EXIT_PENDING, &il->status)) { - IL_WARN("Exit pending; will not bring the NIC up\n"); - return -EIO; - } - - if (!il->ucode_data_backup.v_addr || !il->ucode_data.v_addr) { - IL_ERR("ucode not available for device bring up\n"); - return -EIO; - } - - /* If platform's RF_KILL switch is NOT set to KILL */ - if (_il_rd(il, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW) - clear_bit(S_RFKILL, &il->status); - else { - set_bit(S_RFKILL, &il->status); - return -ERFKILL; - } - - _il_wr(il, CSR_INT, 0xFFFFFFFF); - - rc = il3945_hw_nic_init(il); - if (rc) { - IL_ERR("Unable to int nic\n"); - return rc; - } - - /* make sure rfkill handshake bits are cleared */ - _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); - _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); - - /* clear (again), then enable host interrupts */ - _il_wr(il, CSR_INT, 0xFFFFFFFF); - il_enable_interrupts(il); - - /* really make sure rfkill handshake bits are cleared */ - _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); - _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); - - /* Copy original ucode data image from disk into backup cache. - * This will be used to initialize the on-board processor's - * data SRAM for a clean start when the runtime program first loads. */ - memcpy(il->ucode_data_backup.v_addr, il->ucode_data.v_addr, - il->ucode_data.len); - - /* We return success when we resume from suspend and rf_kill is on. */ - if (test_bit(S_RFKILL, &il->status)) - return 0; - - for (i = 0; i < MAX_HW_RESTARTS; i++) { - - /* load bootstrap state machine, - * load bootstrap program into processor's memory, - * prepare to load the "initialize" uCode */ - rc = il->ops->load_ucode(il); - - if (rc) { - IL_ERR("Unable to set up bootstrap uCode: %d\n", rc); - continue; - } - - /* start card; "initialize" will load runtime ucode */ - il3945_nic_start(il); - - D_INFO(DRV_NAME " is coming up\n"); - - return 0; - } - - set_bit(S_EXIT_PENDING, &il->status); - __il3945_down(il); - clear_bit(S_EXIT_PENDING, &il->status); - - /* tried to restart and config the device for as long as our - * patience could withstand */ - IL_ERR("Unable to initialize device after %d attempts.\n", i); - return -EIO; -} - -/***************************************************************************** - * - * Workqueue callbacks - * - *****************************************************************************/ - -static void -il3945_bg_init_alive_start(struct work_struct *data) -{ - struct il_priv *il = - container_of(data, struct il_priv, init_alive_start.work); - - mutex_lock(&il->mutex); - if (test_bit(S_EXIT_PENDING, &il->status)) - goto out; - - il3945_init_alive_start(il); -out: - mutex_unlock(&il->mutex); -} - -static void -il3945_bg_alive_start(struct work_struct *data) -{ - struct il_priv *il = - container_of(data, struct il_priv, alive_start.work); - - mutex_lock(&il->mutex); - if (test_bit(S_EXIT_PENDING, &il->status) || il->txq == NULL) - goto out; - - il3945_alive_start(il); -out: - mutex_unlock(&il->mutex); -} - -/* - * 3945 cannot interrupt driver when hardware rf kill switch toggles; - * driver must poll CSR_GP_CNTRL_REG register for change. This register - * *is* readable even when device has been SW_RESET into low power mode - * (e.g. during RF KILL). - */ -static void -il3945_rfkill_poll(struct work_struct *data) -{ - struct il_priv *il = - container_of(data, struct il_priv, _3945.rfkill_poll.work); - bool old_rfkill = test_bit(S_RFKILL, &il->status); - bool new_rfkill = - !(_il_rd(il, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW); - - if (new_rfkill != old_rfkill) { - if (new_rfkill) - set_bit(S_RFKILL, &il->status); - else - clear_bit(S_RFKILL, &il->status); - - wiphy_rfkill_set_hw_state(il->hw->wiphy, new_rfkill); - - D_RF_KILL("RF_KILL bit toggled to %s.\n", - new_rfkill ? "disable radio" : "enable radio"); - } - - /* Keep this running, even if radio now enabled. This will be - * cancelled in mac_start() if system decides to start again */ - queue_delayed_work(il->workqueue, &il->_3945.rfkill_poll, - round_jiffies_relative(2 * HZ)); - -} - -int -il3945_request_scan(struct il_priv *il, struct ieee80211_vif *vif) -{ - struct il_host_cmd cmd = { - .id = C_SCAN, - .len = sizeof(struct il3945_scan_cmd), - .flags = CMD_SIZE_HUGE, - }; - struct il3945_scan_cmd *scan; - u8 n_probes = 0; - enum ieee80211_band band; - bool is_active = false; - int ret; - u16 len; - - lockdep_assert_held(&il->mutex); - - if (!il->scan_cmd) { - il->scan_cmd = - kmalloc(sizeof(struct il3945_scan_cmd) + IL_MAX_SCAN_SIZE, - GFP_KERNEL); - if (!il->scan_cmd) { - D_SCAN("Fail to allocate scan memory\n"); - return -ENOMEM; - } - } - scan = il->scan_cmd; - memset(scan, 0, sizeof(struct il3945_scan_cmd) + IL_MAX_SCAN_SIZE); - - scan->quiet_plcp_th = IL_PLCP_QUIET_THRESH; - scan->quiet_time = IL_ACTIVE_QUIET_TIME; - - if (il_is_associated(il)) { - u16 interval; - u32 extra; - u32 suspend_time = 100; - u32 scan_suspend_time = 100; - - D_INFO("Scanning while associated...\n"); - - interval = vif->bss_conf.beacon_int; - - scan->suspend_time = 0; - scan->max_out_time = cpu_to_le32(200 * 1024); - if (!interval) - interval = suspend_time; - /* - * suspend time format: - * 0-19: beacon interval in usec (time before exec.) - * 20-23: 0 - * 24-31: number of beacons (suspend between channels) - */ - - extra = (suspend_time / interval) << 24; - scan_suspend_time = - 0xFF0FFFFF & (extra | ((suspend_time % interval) * 1024)); - - scan->suspend_time = cpu_to_le32(scan_suspend_time); - D_SCAN("suspend_time 0x%X beacon interval %d\n", - scan_suspend_time, interval); - } - - if (il->scan_request->n_ssids) { - int i, p = 0; - D_SCAN("Kicking off active scan\n"); - for (i = 0; i < il->scan_request->n_ssids; i++) { - /* always does wildcard anyway */ - if (!il->scan_request->ssids[i].ssid_len) - continue; - scan->direct_scan[p].id = WLAN_EID_SSID; - scan->direct_scan[p].len = - il->scan_request->ssids[i].ssid_len; - memcpy(scan->direct_scan[p].ssid, - il->scan_request->ssids[i].ssid, - il->scan_request->ssids[i].ssid_len); - n_probes++; - p++; - } - is_active = true; - } else - D_SCAN("Kicking off passive scan.\n"); - - /* We don't build a direct scan probe request; the uCode will do - * that based on the direct_mask added to each channel entry */ - scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK; - scan->tx_cmd.sta_id = il->hw_params.bcast_id; - scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; - - /* flags + rate selection */ - - switch (il->scan_band) { - case IEEE80211_BAND_2GHZ: - scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK; - scan->tx_cmd.rate = RATE_1M_PLCP; - band = IEEE80211_BAND_2GHZ; - break; - case IEEE80211_BAND_5GHZ: - scan->tx_cmd.rate = RATE_6M_PLCP; - band = IEEE80211_BAND_5GHZ; - break; - default: - IL_WARN("Invalid scan band\n"); - return -EIO; - } - - /* - * If active scaning is requested but a certain channel is marked - * passive, we can do active scanning if we detect transmissions. For - * passive only scanning disable switching to active on any channel. - */ - scan->good_CRC_th = - is_active ? IL_GOOD_CRC_TH_DEFAULT : IL_GOOD_CRC_TH_NEVER; - - len = - il_fill_probe_req(il, (struct ieee80211_mgmt *)scan->data, - vif->addr, il->scan_request->ie, - il->scan_request->ie_len, - IL_MAX_SCAN_SIZE - sizeof(*scan)); - scan->tx_cmd.len = cpu_to_le16(len); - - /* select Rx antennas */ - scan->flags |= il3945_get_antenna_flags(il); - - scan->channel_count = - il3945_get_channels_for_scan(il, band, is_active, n_probes, - (void *)&scan->data[len], vif); - if (scan->channel_count == 0) { - D_SCAN("channel count %d\n", scan->channel_count); - return -EIO; - } - - cmd.len += - le16_to_cpu(scan->tx_cmd.len) + - scan->channel_count * sizeof(struct il3945_scan_channel); - cmd.data = scan; - scan->len = cpu_to_le16(cmd.len); - - set_bit(S_SCAN_HW, &il->status); - ret = il_send_cmd_sync(il, &cmd); - if (ret) - clear_bit(S_SCAN_HW, &il->status); - return ret; -} - -void -il3945_post_scan(struct il_priv *il) -{ - /* - * Since setting the RXON may have been deferred while - * performing the scan, fire one off if needed - */ - if (memcmp(&il->staging, &il->active, sizeof(il->staging))) - il3945_commit_rxon(il); -} - -static void -il3945_bg_restart(struct work_struct *data) -{ - struct il_priv *il = container_of(data, struct il_priv, restart); - - if (test_bit(S_EXIT_PENDING, &il->status)) - return; - - if (test_and_clear_bit(S_FW_ERROR, &il->status)) { - mutex_lock(&il->mutex); - il->is_open = 0; - mutex_unlock(&il->mutex); - il3945_down(il); - ieee80211_restart_hw(il->hw); - } else { - il3945_down(il); - - mutex_lock(&il->mutex); - if (test_bit(S_EXIT_PENDING, &il->status)) { - mutex_unlock(&il->mutex); - return; - } - - __il3945_up(il); - mutex_unlock(&il->mutex); - } -} - -static void -il3945_bg_rx_replenish(struct work_struct *data) -{ - struct il_priv *il = container_of(data, struct il_priv, rx_replenish); - - mutex_lock(&il->mutex); - if (test_bit(S_EXIT_PENDING, &il->status)) - goto out; - - il3945_rx_replenish(il); -out: - mutex_unlock(&il->mutex); -} - -void -il3945_post_associate(struct il_priv *il) -{ - int rc = 0; - struct ieee80211_conf *conf = NULL; - - if (!il->vif || !il->is_open) - return; - - D_ASSOC("Associated as %d to: %pM\n", il->vif->bss_conf.aid, - il->active.bssid_addr); - - if (test_bit(S_EXIT_PENDING, &il->status)) - return; - - il_scan_cancel_timeout(il, 200); - - conf = &il->hw->conf; - - il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; - il3945_commit_rxon(il); - - rc = il_send_rxon_timing(il); - if (rc) - IL_WARN("C_RXON_TIMING failed - " "Attempting to continue.\n"); - - il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; - - il->staging.assoc_id = cpu_to_le16(il->vif->bss_conf.aid); - - D_ASSOC("assoc id %d beacon interval %d\n", il->vif->bss_conf.aid, - il->vif->bss_conf.beacon_int); - - if (il->vif->bss_conf.use_short_preamble) - il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; - else - il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; - - if (il->staging.flags & RXON_FLG_BAND_24G_MSK) { - if (il->vif->bss_conf.use_short_slot) - il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; - else - il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; - } - - il3945_commit_rxon(il); - - switch (il->vif->type) { - case NL80211_IFTYPE_STATION: - il3945_rate_scale_init(il->hw, IL_AP_ID); - break; - case NL80211_IFTYPE_ADHOC: - il3945_send_beacon_cmd(il); - break; - default: - IL_ERR("%s Should not be called in %d mode\n", __func__, - il->vif->type); - break; - } -} - -/***************************************************************************** - * - * mac80211 entry point functions - * - *****************************************************************************/ - -#define UCODE_READY_TIMEOUT (2 * HZ) - -static int -il3945_mac_start(struct ieee80211_hw *hw) -{ - struct il_priv *il = hw->priv; - int ret; - - /* we should be verifying the device is ready to be opened */ - mutex_lock(&il->mutex); - D_MAC80211("enter\n"); - - /* fetch ucode file from disk, alloc and copy to bus-master buffers ... - * ucode filename and max sizes are card-specific. */ - - if (!il->ucode_code.len) { - ret = il3945_read_ucode(il); - if (ret) { - IL_ERR("Could not read microcode: %d\n", ret); - mutex_unlock(&il->mutex); - goto out_release_irq; - } - } - - ret = __il3945_up(il); - - mutex_unlock(&il->mutex); - - if (ret) - goto out_release_irq; - - D_INFO("Start UP work.\n"); - - /* Wait for START_ALIVE from ucode. Otherwise callbacks from - * mac80211 will not be run successfully. */ - ret = wait_event_timeout(il->wait_command_queue, - test_bit(S_READY, &il->status), - UCODE_READY_TIMEOUT); - if (!ret) { - if (!test_bit(S_READY, &il->status)) { - IL_ERR("Wait for START_ALIVE timeout after %dms.\n", - jiffies_to_msecs(UCODE_READY_TIMEOUT)); - ret = -ETIMEDOUT; - goto out_release_irq; - } - } - - /* ucode is running and will send rfkill notifications, - * no need to poll the killswitch state anymore */ - cancel_delayed_work(&il->_3945.rfkill_poll); - - il->is_open = 1; - D_MAC80211("leave\n"); - return 0; - -out_release_irq: - il->is_open = 0; - D_MAC80211("leave - failed\n"); - return ret; -} - -static void -il3945_mac_stop(struct ieee80211_hw *hw) -{ - struct il_priv *il = hw->priv; - - D_MAC80211("enter\n"); - - if (!il->is_open) { - D_MAC80211("leave - skip\n"); - return; - } - - il->is_open = 0; - - il3945_down(il); - - flush_workqueue(il->workqueue); - - /* start polling the killswitch state again */ - queue_delayed_work(il->workqueue, &il->_3945.rfkill_poll, - round_jiffies_relative(2 * HZ)); - - D_MAC80211("leave\n"); -} - -static void -il3945_mac_tx(struct ieee80211_hw *hw, - struct ieee80211_tx_control *control, - struct sk_buff *skb) -{ - struct il_priv *il = hw->priv; - - D_MAC80211("enter\n"); - - D_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len, - ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate); - - if (il3945_tx_skb(il, control->sta, skb)) - dev_kfree_skb_any(skb); - - D_MAC80211("leave\n"); -} - -void -il3945_config_ap(struct il_priv *il) -{ - struct ieee80211_vif *vif = il->vif; - int rc = 0; - - if (test_bit(S_EXIT_PENDING, &il->status)) - return; - - /* The following should be done only at AP bring up */ - if (!(il_is_associated(il))) { - - /* RXON - unassoc (to set timing command) */ - il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; - il3945_commit_rxon(il); - - /* RXON Timing */ - rc = il_send_rxon_timing(il); - if (rc) - IL_WARN("C_RXON_TIMING failed - " - "Attempting to continue.\n"); - - il->staging.assoc_id = 0; - - if (vif->bss_conf.use_short_preamble) - il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; - else - il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; - - if (il->staging.flags & RXON_FLG_BAND_24G_MSK) { - if (vif->bss_conf.use_short_slot) - il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; - else - il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; - } - /* restore RXON assoc */ - il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; - il3945_commit_rxon(il); - } - il3945_send_beacon_cmd(il); -} - -static int -il3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, - struct ieee80211_vif *vif, struct ieee80211_sta *sta, - struct ieee80211_key_conf *key) -{ - struct il_priv *il = hw->priv; - int ret = 0; - u8 sta_id = IL_INVALID_STATION; - u8 static_key; - - D_MAC80211("enter\n"); - - if (il3945_mod_params.sw_crypto) { - D_MAC80211("leave - hwcrypto disabled\n"); - return -EOPNOTSUPP; - } - - /* - * To support IBSS RSN, don't program group keys in IBSS, the - * hardware will then not attempt to decrypt the frames. - */ - if (vif->type == NL80211_IFTYPE_ADHOC && - !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { - D_MAC80211("leave - IBSS RSN\n"); - return -EOPNOTSUPP; - } - - static_key = !il_is_associated(il); - - if (!static_key) { - sta_id = il_sta_id_or_broadcast(il, sta); - if (sta_id == IL_INVALID_STATION) { - D_MAC80211("leave - station not found\n"); - return -EINVAL; - } - } - - mutex_lock(&il->mutex); - il_scan_cancel_timeout(il, 100); - - switch (cmd) { - case SET_KEY: - if (static_key) - ret = il3945_set_static_key(il, key); - else - ret = il3945_set_dynamic_key(il, key, sta_id); - D_MAC80211("enable hwcrypto key\n"); - break; - case DISABLE_KEY: - if (static_key) - ret = il3945_remove_static_key(il); - else - ret = il3945_clear_sta_key_info(il, sta_id); - D_MAC80211("disable hwcrypto key\n"); - break; - default: - ret = -EINVAL; - } - - D_MAC80211("leave ret %d\n", ret); - mutex_unlock(&il->mutex); - - return ret; -} - -static int -il3945_mac_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - struct ieee80211_sta *sta) -{ - struct il_priv *il = hw->priv; - struct il3945_sta_priv *sta_priv = (void *)sta->drv_priv; - int ret; - bool is_ap = vif->type == NL80211_IFTYPE_STATION; - u8 sta_id; - - mutex_lock(&il->mutex); - D_INFO("station %pM\n", sta->addr); - sta_priv->common.sta_id = IL_INVALID_STATION; - - ret = il_add_station_common(il, sta->addr, is_ap, sta, &sta_id); - if (ret) { - IL_ERR("Unable to add station %pM (%d)\n", sta->addr, ret); - /* Should we return success if return code is EEXIST ? */ - mutex_unlock(&il->mutex); - return ret; - } - - sta_priv->common.sta_id = sta_id; - - /* Initialize rate scaling */ - D_INFO("Initializing rate scaling for station %pM\n", sta->addr); - il3945_rs_rate_init(il, sta, sta_id); - mutex_unlock(&il->mutex); - - return 0; -} - -static void -il3945_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, - unsigned int *total_flags, u64 multicast) -{ - struct il_priv *il = hw->priv; - __le32 filter_or = 0, filter_nand = 0; - -#define CHK(test, flag) do { \ - if (*total_flags & (test)) \ - filter_or |= (flag); \ - else \ - filter_nand |= (flag); \ - } while (0) - - D_MAC80211("Enter: changed: 0x%x, total: 0x%x\n", changed_flags, - *total_flags); - - CHK(FIF_OTHER_BSS, RXON_FILTER_PROMISC_MSK); - CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK); - CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK); - -#undef CHK - - mutex_lock(&il->mutex); - - il->staging.filter_flags &= ~filter_nand; - il->staging.filter_flags |= filter_or; - - /* - * Not committing directly because hardware can perform a scan, - * but even if hw is ready, committing here breaks for some reason, - * we'll eventually commit the filter flags change anyway. - */ - - mutex_unlock(&il->mutex); - - /* - * Receiving all multicast frames is always enabled by the - * default flags setup in il_connection_init_rx_config() - * since we currently do not support programming multicast - * filters into the device. - */ - *total_flags &= - FIF_OTHER_BSS | FIF_ALLMULTI | - FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL; -} - -/***************************************************************************** - * - * sysfs attributes - * - *****************************************************************************/ - -#ifdef CONFIG_IWLEGACY_DEBUG - -/* - * The following adds a new attribute to the sysfs representation - * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/) - * used for controlling the debug level. - * - * See the level definitions in iwl for details. - * - * The debug_level being managed using sysfs below is a per device debug - * level that is used instead of the global debug level if it (the per - * device debug level) is set. - */ -static ssize_t -il3945_show_debug_level(struct device *d, struct device_attribute *attr, - char *buf) -{ - struct il_priv *il = dev_get_drvdata(d); - return sprintf(buf, "0x%08X\n", il_get_debug_level(il)); -} - -static ssize_t -il3945_store_debug_level(struct device *d, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct il_priv *il = dev_get_drvdata(d); - unsigned long val; - int ret; - - ret = kstrtoul(buf, 0, &val); - if (ret) - IL_INFO("%s is not in hex or decimal form.\n", buf); - else - il->debug_level = val; - - return strnlen(buf, count); -} - -static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO, il3945_show_debug_level, - il3945_store_debug_level); - -#endif /* CONFIG_IWLEGACY_DEBUG */ - -static ssize_t -il3945_show_temperature(struct device *d, struct device_attribute *attr, - char *buf) -{ - struct il_priv *il = dev_get_drvdata(d); - - if (!il_is_alive(il)) - return -EAGAIN; - - return sprintf(buf, "%d\n", il3945_hw_get_temperature(il)); -} - -static DEVICE_ATTR(temperature, S_IRUGO, il3945_show_temperature, NULL); - -static ssize_t -il3945_show_tx_power(struct device *d, struct device_attribute *attr, char *buf) -{ - struct il_priv *il = dev_get_drvdata(d); - return sprintf(buf, "%d\n", il->tx_power_user_lmt); -} - -static ssize_t -il3945_store_tx_power(struct device *d, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct il_priv *il = dev_get_drvdata(d); - char *p = (char *)buf; - u32 val; - - val = simple_strtoul(p, &p, 10); - if (p == buf) - IL_INFO(": %s is not in decimal form.\n", buf); - else - il3945_hw_reg_set_txpower(il, val); - - return count; -} - -static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, il3945_show_tx_power, - il3945_store_tx_power); - -static ssize_t -il3945_show_flags(struct device *d, struct device_attribute *attr, char *buf) -{ - struct il_priv *il = dev_get_drvdata(d); - - return sprintf(buf, "0x%04X\n", il->active.flags); -} - -static ssize_t -il3945_store_flags(struct device *d, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct il_priv *il = dev_get_drvdata(d); - u32 flags = simple_strtoul(buf, NULL, 0); - - mutex_lock(&il->mutex); - if (le32_to_cpu(il->staging.flags) != flags) { - /* Cancel any currently running scans... */ - if (il_scan_cancel_timeout(il, 100)) - IL_WARN("Could not cancel scan.\n"); - else { - D_INFO("Committing rxon.flags = 0x%04X\n", flags); - il->staging.flags = cpu_to_le32(flags); - il3945_commit_rxon(il); - } - } - mutex_unlock(&il->mutex); - - return count; -} - -static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, il3945_show_flags, - il3945_store_flags); - -static ssize_t -il3945_show_filter_flags(struct device *d, struct device_attribute *attr, - char *buf) -{ - struct il_priv *il = dev_get_drvdata(d); - - return sprintf(buf, "0x%04X\n", le32_to_cpu(il->active.filter_flags)); -} - -static ssize_t -il3945_store_filter_flags(struct device *d, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct il_priv *il = dev_get_drvdata(d); - u32 filter_flags = simple_strtoul(buf, NULL, 0); - - mutex_lock(&il->mutex); - if (le32_to_cpu(il->staging.filter_flags) != filter_flags) { - /* Cancel any currently running scans... */ - if (il_scan_cancel_timeout(il, 100)) - IL_WARN("Could not cancel scan.\n"); - else { - D_INFO("Committing rxon.filter_flags = " "0x%04X\n", - filter_flags); - il->staging.filter_flags = cpu_to_le32(filter_flags); - il3945_commit_rxon(il); - } - } - mutex_unlock(&il->mutex); - - return count; -} - -static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, il3945_show_filter_flags, - il3945_store_filter_flags); - -static ssize_t -il3945_show_measurement(struct device *d, struct device_attribute *attr, - char *buf) -{ - struct il_priv *il = dev_get_drvdata(d); - struct il_spectrum_notification measure_report; - u32 size = sizeof(measure_report), len = 0, ofs = 0; - u8 *data = (u8 *) &measure_report; - unsigned long flags; - - spin_lock_irqsave(&il->lock, flags); - if (!(il->measurement_status & MEASUREMENT_READY)) { - spin_unlock_irqrestore(&il->lock, flags); - return 0; - } - memcpy(&measure_report, &il->measure_report, size); - il->measurement_status = 0; - spin_unlock_irqrestore(&il->lock, flags); - - while (size && PAGE_SIZE - len) { - hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len, - PAGE_SIZE - len, true); - len = strlen(buf); - if (PAGE_SIZE - len) - buf[len++] = '\n'; - - ofs += 16; - size -= min(size, 16U); - } - - return len; -} - -static ssize_t -il3945_store_measurement(struct device *d, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct il_priv *il = dev_get_drvdata(d); - struct ieee80211_measurement_params params = { - .channel = le16_to_cpu(il->active.channel), - .start_time = cpu_to_le64(il->_3945.last_tsf), - .duration = cpu_to_le16(1), - }; - u8 type = IL_MEASURE_BASIC; - u8 buffer[32]; - u8 channel; - - if (count) { - char *p = buffer; - strlcpy(buffer, buf, sizeof(buffer)); - channel = simple_strtoul(p, NULL, 0); - if (channel) - params.channel = channel; - - p = buffer; - while (*p && *p != ' ') - p++; - if (*p) - type = simple_strtoul(p + 1, NULL, 0); - } - - D_INFO("Invoking measurement of type %d on " "channel %d (for '%s')\n", - type, params.channel, buf); - il3945_get_measurement(il, ¶ms, type); - - return count; -} - -static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR, il3945_show_measurement, - il3945_store_measurement); - -static ssize_t -il3945_store_retry_rate(struct device *d, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct il_priv *il = dev_get_drvdata(d); - - il->retry_rate = simple_strtoul(buf, NULL, 0); - if (il->retry_rate <= 0) - il->retry_rate = 1; - - return count; -} - -static ssize_t -il3945_show_retry_rate(struct device *d, struct device_attribute *attr, - char *buf) -{ - struct il_priv *il = dev_get_drvdata(d); - return sprintf(buf, "%d", il->retry_rate); -} - -static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, il3945_show_retry_rate, - il3945_store_retry_rate); - -static ssize_t -il3945_show_channels(struct device *d, struct device_attribute *attr, char *buf) -{ - /* all this shit doesn't belong into sysfs anyway */ - return 0; -} - -static DEVICE_ATTR(channels, S_IRUSR, il3945_show_channels, NULL); - -static ssize_t -il3945_show_antenna(struct device *d, struct device_attribute *attr, char *buf) -{ - struct il_priv *il = dev_get_drvdata(d); - - if (!il_is_alive(il)) - return -EAGAIN; - - return sprintf(buf, "%d\n", il3945_mod_params.antenna); -} - -static ssize_t -il3945_store_antenna(struct device *d, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct il_priv *il __maybe_unused = dev_get_drvdata(d); - int ant; - - if (count == 0) - return 0; - - if (sscanf(buf, "%1i", &ant) != 1) { - D_INFO("not in hex or decimal form.\n"); - return count; - } - - if (ant >= 0 && ant <= 2) { - D_INFO("Setting antenna select to %d.\n", ant); - il3945_mod_params.antenna = (enum il3945_antenna)ant; - } else - D_INFO("Bad antenna select value %d.\n", ant); - - return count; -} - -static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, il3945_show_antenna, - il3945_store_antenna); - -static ssize_t -il3945_show_status(struct device *d, struct device_attribute *attr, char *buf) -{ - struct il_priv *il = dev_get_drvdata(d); - if (!il_is_alive(il)) - return -EAGAIN; - return sprintf(buf, "0x%08x\n", (int)il->status); -} - -static DEVICE_ATTR(status, S_IRUGO, il3945_show_status, NULL); - -static ssize_t -il3945_dump_error_log(struct device *d, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct il_priv *il = dev_get_drvdata(d); - char *p = (char *)buf; - - if (p[0] == '1') - il3945_dump_nic_error_log(il); - - return strnlen(buf, count); -} - -static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, il3945_dump_error_log); - -/***************************************************************************** - * - * driver setup and tear down - * - *****************************************************************************/ - -static void -il3945_setup_deferred_work(struct il_priv *il) -{ - il->workqueue = create_singlethread_workqueue(DRV_NAME); - - init_waitqueue_head(&il->wait_command_queue); - - INIT_WORK(&il->restart, il3945_bg_restart); - INIT_WORK(&il->rx_replenish, il3945_bg_rx_replenish); - INIT_DELAYED_WORK(&il->init_alive_start, il3945_bg_init_alive_start); - INIT_DELAYED_WORK(&il->alive_start, il3945_bg_alive_start); - INIT_DELAYED_WORK(&il->_3945.rfkill_poll, il3945_rfkill_poll); - - il_setup_scan_deferred_work(il); - - il3945_hw_setup_deferred_work(il); - - setup_timer(&il->watchdog, il_bg_watchdog, (unsigned long)il); - - tasklet_init(&il->irq_tasklet, - (void (*)(unsigned long))il3945_irq_tasklet, - (unsigned long)il); -} - -static void -il3945_cancel_deferred_work(struct il_priv *il) -{ - il3945_hw_cancel_deferred_work(il); - - cancel_delayed_work_sync(&il->init_alive_start); - cancel_delayed_work(&il->alive_start); - - il_cancel_scan_deferred_work(il); -} - -static struct attribute *il3945_sysfs_entries[] = { - &dev_attr_antenna.attr, - &dev_attr_channels.attr, - &dev_attr_dump_errors.attr, - &dev_attr_flags.attr, - &dev_attr_filter_flags.attr, - &dev_attr_measurement.attr, - &dev_attr_retry_rate.attr, - &dev_attr_status.attr, - &dev_attr_temperature.attr, - &dev_attr_tx_power.attr, -#ifdef CONFIG_IWLEGACY_DEBUG - &dev_attr_debug_level.attr, -#endif - NULL -}; - -static struct attribute_group il3945_attribute_group = { - .name = NULL, /* put in device directory */ - .attrs = il3945_sysfs_entries, -}; - -static struct ieee80211_ops il3945_mac_ops __read_mostly = { - .tx = il3945_mac_tx, - .start = il3945_mac_start, - .stop = il3945_mac_stop, - .add_interface = il_mac_add_interface, - .remove_interface = il_mac_remove_interface, - .change_interface = il_mac_change_interface, - .config = il_mac_config, - .configure_filter = il3945_configure_filter, - .set_key = il3945_mac_set_key, - .conf_tx = il_mac_conf_tx, - .reset_tsf = il_mac_reset_tsf, - .bss_info_changed = il_mac_bss_info_changed, - .hw_scan = il_mac_hw_scan, - .sta_add = il3945_mac_sta_add, - .sta_remove = il_mac_sta_remove, - .tx_last_beacon = il_mac_tx_last_beacon, - .flush = il_mac_flush, -}; - -static int -il3945_init_drv(struct il_priv *il) -{ - int ret; - struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom; - - il->retry_rate = 1; - il->beacon_skb = NULL; - - spin_lock_init(&il->sta_lock); - spin_lock_init(&il->hcmd_lock); - - INIT_LIST_HEAD(&il->free_frames); - - mutex_init(&il->mutex); - - il->ieee_channels = NULL; - il->ieee_rates = NULL; - il->band = IEEE80211_BAND_2GHZ; - - il->iw_mode = NL80211_IFTYPE_STATION; - il->missed_beacon_threshold = IL_MISSED_BEACON_THRESHOLD_DEF; - - /* initialize force reset */ - il->force_reset.reset_duration = IL_DELAY_NEXT_FORCE_FW_RELOAD; - - if (eeprom->version < EEPROM_3945_EEPROM_VERSION) { - IL_WARN("Unsupported EEPROM version: 0x%04X\n", - eeprom->version); - ret = -EINVAL; - goto err; - } - ret = il_init_channel_map(il); - if (ret) { - IL_ERR("initializing regulatory failed: %d\n", ret); - goto err; - } - - /* Set up txpower settings in driver for all channels */ - if (il3945_txpower_set_from_eeprom(il)) { - ret = -EIO; - goto err_free_channel_map; - } - - ret = il_init_geos(il); - if (ret) { - IL_ERR("initializing geos failed: %d\n", ret); - goto err_free_channel_map; - } - il3945_init_hw_rates(il, il->ieee_rates); - - return 0; - -err_free_channel_map: - il_free_channel_map(il); -err: - return ret; -} - -#define IL3945_MAX_PROBE_REQUEST 200 - -static int -il3945_setup_mac(struct il_priv *il) -{ - int ret; - struct ieee80211_hw *hw = il->hw; - - hw->rate_control_algorithm = "iwl-3945-rs"; - hw->sta_data_size = sizeof(struct il3945_sta_priv); - hw->vif_data_size = sizeof(struct il_vif_priv); - - /* Tell mac80211 our characteristics */ - ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); - ieee80211_hw_set(hw, SUPPORTS_PS); - ieee80211_hw_set(hw, SIGNAL_DBM); - ieee80211_hw_set(hw, SPECTRUM_MGMT); - - hw->wiphy->interface_modes = - BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC); - - hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; - hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | - REGULATORY_DISABLE_BEACON_HINTS; - - hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; - - hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945; - /* we create the 802.11 header and a zero-length SSID element */ - hw->wiphy->max_scan_ie_len = IL3945_MAX_PROBE_REQUEST - 24 - 2; - - /* Default value; 4 EDCA QOS priorities */ - hw->queues = 4; - - if (il->bands[IEEE80211_BAND_2GHZ].n_channels) - il->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = - &il->bands[IEEE80211_BAND_2GHZ]; - - if (il->bands[IEEE80211_BAND_5GHZ].n_channels) - il->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = - &il->bands[IEEE80211_BAND_5GHZ]; - - il_leds_init(il); - - ret = ieee80211_register_hw(il->hw); - if (ret) { - IL_ERR("Failed to register hw (error %d)\n", ret); - return ret; - } - il->mac80211_registered = 1; - - return 0; -} - -static int -il3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) -{ - int err = 0; - struct il_priv *il; - struct ieee80211_hw *hw; - struct il_cfg *cfg = (struct il_cfg *)(ent->driver_data); - struct il3945_eeprom *eeprom; - unsigned long flags; - - /*********************** - * 1. Allocating HW data - * ********************/ - - hw = ieee80211_alloc_hw(sizeof(struct il_priv), &il3945_mac_ops); - if (!hw) { - err = -ENOMEM; - goto out; - } - il = hw->priv; - il->hw = hw; - SET_IEEE80211_DEV(hw, &pdev->dev); - - il->cmd_queue = IL39_CMD_QUEUE_NUM; - - /* - * Disabling hardware scan means that mac80211 will perform scans - * "the hard way", rather than using device's scan. - */ - if (il3945_mod_params.disable_hw_scan) { - D_INFO("Disabling hw_scan\n"); - il3945_mac_ops.hw_scan = NULL; - } - - D_INFO("*** LOAD DRIVER ***\n"); - il->cfg = cfg; - il->ops = &il3945_ops; -#ifdef CONFIG_IWLEGACY_DEBUGFS - il->debugfs_ops = &il3945_debugfs_ops; -#endif - il->pci_dev = pdev; - il->inta_mask = CSR_INI_SET_MASK; - - /*************************** - * 2. Initializing PCI bus - * *************************/ - pci_disable_link_state(pdev, - PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 | - PCIE_LINK_STATE_CLKPM); - - if (pci_enable_device(pdev)) { - err = -ENODEV; - goto out_ieee80211_free_hw; - } - - pci_set_master(pdev); - - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); - if (!err) - err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); - if (err) { - IL_WARN("No suitable DMA available.\n"); - goto out_pci_disable_device; - } - - pci_set_drvdata(pdev, il); - err = pci_request_regions(pdev, DRV_NAME); - if (err) - goto out_pci_disable_device; - - /*********************** - * 3. Read REV Register - * ********************/ - il->hw_base = pci_ioremap_bar(pdev, 0); - if (!il->hw_base) { - err = -ENODEV; - goto out_pci_release_regions; - } - - D_INFO("pci_resource_len = 0x%08llx\n", - (unsigned long long)pci_resource_len(pdev, 0)); - D_INFO("pci_resource_base = %p\n", il->hw_base); - - /* We disable the RETRY_TIMEOUT register (0x41) to keep - * PCI Tx retries from interfering with C3 CPU state */ - pci_write_config_byte(pdev, 0x41, 0x00); - - /* these spin locks will be used in apm_init and EEPROM access - * we should init now - */ - spin_lock_init(&il->reg_lock); - spin_lock_init(&il->lock); - - /* - * stop and reset the on-board processor just in case it is in a - * strange state ... like being left stranded by a primary kernel - * and this is now the kdump kernel trying to start up - */ - _il_wr(il, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); - - /*********************** - * 4. Read EEPROM - * ********************/ - - /* Read the EEPROM */ - err = il_eeprom_init(il); - if (err) { - IL_ERR("Unable to init EEPROM\n"); - goto out_iounmap; - } - /* MAC Address location in EEPROM same for 3945/4965 */ - eeprom = (struct il3945_eeprom *)il->eeprom; - D_INFO("MAC address: %pM\n", eeprom->mac_address); - SET_IEEE80211_PERM_ADDR(il->hw, eeprom->mac_address); - - /*********************** - * 5. Setup HW Constants - * ********************/ - /* Device-specific setup */ - err = il3945_hw_set_hw_params(il); - if (err) { - IL_ERR("failed to set hw settings\n"); - goto out_eeprom_free; - } - - /*********************** - * 6. Setup il - * ********************/ - - err = il3945_init_drv(il); - if (err) { - IL_ERR("initializing driver failed\n"); - goto out_unset_hw_params; - } - - IL_INFO("Detected Intel Wireless WiFi Link %s\n", il->cfg->name); - - /*********************** - * 7. Setup Services - * ********************/ - - spin_lock_irqsave(&il->lock, flags); - il_disable_interrupts(il); - spin_unlock_irqrestore(&il->lock, flags); - - pci_enable_msi(il->pci_dev); - - err = request_irq(il->pci_dev->irq, il_isr, IRQF_SHARED, DRV_NAME, il); - if (err) { - IL_ERR("Error allocating IRQ %d\n", il->pci_dev->irq); - goto out_disable_msi; - } - - err = sysfs_create_group(&pdev->dev.kobj, &il3945_attribute_group); - if (err) { - IL_ERR("failed to create sysfs device attributes\n"); - goto out_release_irq; - } - - il_set_rxon_channel(il, &il->bands[IEEE80211_BAND_2GHZ].channels[5]); - il3945_setup_deferred_work(il); - il3945_setup_handlers(il); - il_power_initialize(il); - - /********************************* - * 8. Setup and Register mac80211 - * *******************************/ - - il_enable_interrupts(il); - - err = il3945_setup_mac(il); - if (err) - goto out_remove_sysfs; - - err = il_dbgfs_register(il, DRV_NAME); - if (err) - IL_ERR("failed to create debugfs files. Ignoring error: %d\n", - err); - - /* Start monitoring the killswitch */ - queue_delayed_work(il->workqueue, &il->_3945.rfkill_poll, 2 * HZ); - - return 0; - -out_remove_sysfs: - destroy_workqueue(il->workqueue); - il->workqueue = NULL; - sysfs_remove_group(&pdev->dev.kobj, &il3945_attribute_group); -out_release_irq: - free_irq(il->pci_dev->irq, il); -out_disable_msi: - pci_disable_msi(il->pci_dev); - il_free_geos(il); - il_free_channel_map(il); -out_unset_hw_params: - il3945_unset_hw_params(il); -out_eeprom_free: - il_eeprom_free(il); -out_iounmap: - iounmap(il->hw_base); -out_pci_release_regions: - pci_release_regions(pdev); -out_pci_disable_device: - pci_disable_device(pdev); -out_ieee80211_free_hw: - ieee80211_free_hw(il->hw); -out: - return err; -} - -static void -il3945_pci_remove(struct pci_dev *pdev) -{ - struct il_priv *il = pci_get_drvdata(pdev); - unsigned long flags; - - if (!il) - return; - - D_INFO("*** UNLOAD DRIVER ***\n"); - - il_dbgfs_unregister(il); - - set_bit(S_EXIT_PENDING, &il->status); - - il_leds_exit(il); - - if (il->mac80211_registered) { - ieee80211_unregister_hw(il->hw); - il->mac80211_registered = 0; - } else { - il3945_down(il); - } - - /* - * Make sure device is reset to low power before unloading driver. - * This may be redundant with il_down(), but there are paths to - * run il_down() without calling apm_ops.stop(), and there are - * paths to avoid running il_down() at all before leaving driver. - * This (inexpensive) call *makes sure* device is reset. - */ - il_apm_stop(il); - - /* make sure we flush any pending irq or - * tasklet for the driver - */ - spin_lock_irqsave(&il->lock, flags); - il_disable_interrupts(il); - spin_unlock_irqrestore(&il->lock, flags); - - il3945_synchronize_irq(il); - - sysfs_remove_group(&pdev->dev.kobj, &il3945_attribute_group); - - cancel_delayed_work_sync(&il->_3945.rfkill_poll); - - il3945_dealloc_ucode_pci(il); - - if (il->rxq.bd) - il3945_rx_queue_free(il, &il->rxq); - il3945_hw_txq_ctx_free(il); - - il3945_unset_hw_params(il); - - /*netif_stop_queue(dev); */ - flush_workqueue(il->workqueue); - - /* ieee80211_unregister_hw calls il3945_mac_stop, which flushes - * il->workqueue... so we can't take down the workqueue - * until now... */ - destroy_workqueue(il->workqueue); - il->workqueue = NULL; - - free_irq(pdev->irq, il); - pci_disable_msi(pdev); - - iounmap(il->hw_base); - pci_release_regions(pdev); - pci_disable_device(pdev); - - il_free_channel_map(il); - il_free_geos(il); - kfree(il->scan_cmd); - if (il->beacon_skb) - dev_kfree_skb(il->beacon_skb); - - ieee80211_free_hw(il->hw); -} - -/***************************************************************************** - * - * driver and module entry point - * - *****************************************************************************/ - -static struct pci_driver il3945_driver = { - .name = DRV_NAME, - .id_table = il3945_hw_card_ids, - .probe = il3945_pci_probe, - .remove = il3945_pci_remove, - .driver.pm = IL_LEGACY_PM_OPS, -}; - -static int __init -il3945_init(void) -{ - - int ret; - pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n"); - pr_info(DRV_COPYRIGHT "\n"); - - ret = il3945_rate_control_register(); - if (ret) { - pr_err("Unable to register rate control algorithm: %d\n", ret); - return ret; - } - - ret = pci_register_driver(&il3945_driver); - if (ret) { - pr_err("Unable to initialize PCI module\n"); - goto error_register; - } - - return ret; - -error_register: - il3945_rate_control_unregister(); - return ret; -} - -static void __exit -il3945_exit(void) -{ - pci_unregister_driver(&il3945_driver); - il3945_rate_control_unregister(); -} - -MODULE_FIRMWARE(IL3945_MODULE_FIRMWARE(IL3945_UCODE_API_MAX)); - -module_param_named(antenna, il3945_mod_params.antenna, int, S_IRUGO); -MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])"); -module_param_named(swcrypto, il3945_mod_params.sw_crypto, int, S_IRUGO); -MODULE_PARM_DESC(swcrypto, "using software crypto (default 1 [software])"); -module_param_named(disable_hw_scan, il3945_mod_params.disable_hw_scan, int, - S_IRUGO); -MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 1)"); -#ifdef CONFIG_IWLEGACY_DEBUG -module_param_named(debug, il_debug_level, uint, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(debug, "debug output mask"); -#endif -module_param_named(fw_restart, il3945_mod_params.restart_fw, int, S_IRUGO); -MODULE_PARM_DESC(fw_restart, "restart firmware in case of error"); - -module_exit(il3945_exit); -module_init(il3945_init); diff --git a/drivers/net/wireless/iwlegacy/3945-rs.c b/drivers/net/wireless/iwlegacy/3945-rs.c deleted file mode 100644 index 76b0729ade17..000000000000 --- a/drivers/net/wireless/iwlegacy/3945-rs.c +++ /dev/null @@ -1,979 +0,0 @@ -/****************************************************************************** - * - * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA - * - * The full GNU General Public License is included in this distribution in the - * file called LICENSE. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - *****************************************************************************/ - -#include <linux/kernel.h> -#include <linux/skbuff.h> -#include <linux/slab.h> -#include <net/mac80211.h> - -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/delay.h> - -#include <linux/workqueue.h> - -#include "commands.h" -#include "3945.h" - -#define RS_NAME "iwl-3945-rs" - -static s32 il3945_expected_tpt_g[RATE_COUNT_3945] = { - 7, 13, 35, 58, 0, 0, 76, 104, 130, 168, 191, 202 -}; - -static s32 il3945_expected_tpt_g_prot[RATE_COUNT_3945] = { - 7, 13, 35, 58, 0, 0, 0, 80, 93, 113, 123, 125 -}; - -static s32 il3945_expected_tpt_a[RATE_COUNT_3945] = { - 0, 0, 0, 0, 40, 57, 72, 98, 121, 154, 177, 186 -}; - -static s32 il3945_expected_tpt_b[RATE_COUNT_3945] = { - 7, 13, 35, 58, 0, 0, 0, 0, 0, 0, 0, 0 -}; - -struct il3945_tpt_entry { - s8 min_rssi; - u8 idx; -}; - -static struct il3945_tpt_entry il3945_tpt_table_a[] = { - {-60, RATE_54M_IDX}, - {-64, RATE_48M_IDX}, - {-72, RATE_36M_IDX}, - {-80, RATE_24M_IDX}, - {-84, RATE_18M_IDX}, - {-85, RATE_12M_IDX}, - {-87, RATE_9M_IDX}, - {-89, RATE_6M_IDX} -}; - -static struct il3945_tpt_entry il3945_tpt_table_g[] = { - {-60, RATE_54M_IDX}, - {-64, RATE_48M_IDX}, - {-68, RATE_36M_IDX}, - {-80, RATE_24M_IDX}, - {-84, RATE_18M_IDX}, - {-85, RATE_12M_IDX}, - {-86, RATE_11M_IDX}, - {-88, RATE_5M_IDX}, - {-90, RATE_2M_IDX}, - {-92, RATE_1M_IDX} -}; - -#define RATE_MAX_WINDOW 62 -#define RATE_FLUSH (3*HZ) -#define RATE_WIN_FLUSH (HZ/2) -#define IL39_RATE_HIGH_TH 11520 -#define IL_SUCCESS_UP_TH 8960 -#define IL_SUCCESS_DOWN_TH 10880 -#define RATE_MIN_FAILURE_TH 6 -#define RATE_MIN_SUCCESS_TH 8 -#define RATE_DECREASE_TH 1920 -#define RATE_RETRY_TH 15 - -static u8 -il3945_get_rate_idx_by_rssi(s32 rssi, enum ieee80211_band band) -{ - u32 idx = 0; - u32 table_size = 0; - struct il3945_tpt_entry *tpt_table = NULL; - - if (rssi < IL_MIN_RSSI_VAL || rssi > IL_MAX_RSSI_VAL) - rssi = IL_MIN_RSSI_VAL; - - switch (band) { - case IEEE80211_BAND_2GHZ: - tpt_table = il3945_tpt_table_g; - table_size = ARRAY_SIZE(il3945_tpt_table_g); - break; - case IEEE80211_BAND_5GHZ: - tpt_table = il3945_tpt_table_a; - table_size = ARRAY_SIZE(il3945_tpt_table_a); - break; - default: - BUG(); - break; - } - - while (idx < table_size && rssi < tpt_table[idx].min_rssi) - idx++; - - idx = min(idx, table_size - 1); - - return tpt_table[idx].idx; -} - -static void -il3945_clear_win(struct il3945_rate_scale_data *win) -{ - win->data = 0; - win->success_counter = 0; - win->success_ratio = -1; - win->counter = 0; - win->average_tpt = IL_INVALID_VALUE; - win->stamp = 0; -} - -/** - * il3945_rate_scale_flush_wins - flush out the rate scale wins - * - * Returns the number of wins that have gathered data but were - * not flushed. If there were any that were not flushed, then - * reschedule the rate flushing routine. - */ -static int -il3945_rate_scale_flush_wins(struct il3945_rs_sta *rs_sta) -{ - int unflushed = 0; - int i; - unsigned long flags; - struct il_priv *il __maybe_unused = rs_sta->il; - - /* - * For each rate, if we have collected data on that rate - * and it has been more than RATE_WIN_FLUSH - * since we flushed, clear out the gathered stats - */ - for (i = 0; i < RATE_COUNT_3945; i++) { - if (!rs_sta->win[i].counter) - continue; - - spin_lock_irqsave(&rs_sta->lock, flags); - if (time_after(jiffies, rs_sta->win[i].stamp + RATE_WIN_FLUSH)) { - D_RATE("flushing %d samples of rate " "idx %d\n", - rs_sta->win[i].counter, i); - il3945_clear_win(&rs_sta->win[i]); - } else - unflushed++; - spin_unlock_irqrestore(&rs_sta->lock, flags); - } - - return unflushed; -} - -#define RATE_FLUSH_MAX 5000 /* msec */ -#define RATE_FLUSH_MIN 50 /* msec */ -#define IL_AVERAGE_PACKETS 1500 - -static void -il3945_bg_rate_scale_flush(unsigned long data) -{ - struct il3945_rs_sta *rs_sta = (void *)data; - struct il_priv *il __maybe_unused = rs_sta->il; - int unflushed = 0; - unsigned long flags; - u32 packet_count, duration, pps; - - D_RATE("enter\n"); - - unflushed = il3945_rate_scale_flush_wins(rs_sta); - - spin_lock_irqsave(&rs_sta->lock, flags); - - /* Number of packets Rx'd since last time this timer ran */ - packet_count = (rs_sta->tx_packets - rs_sta->last_tx_packets) + 1; - - rs_sta->last_tx_packets = rs_sta->tx_packets + 1; - - if (unflushed) { - duration = - jiffies_to_msecs(jiffies - rs_sta->last_partial_flush); - - D_RATE("Tx'd %d packets in %dms\n", packet_count, duration); - - /* Determine packets per second */ - if (duration) - pps = (packet_count * 1000) / duration; - else - pps = 0; - - if (pps) { - duration = (IL_AVERAGE_PACKETS * 1000) / pps; - if (duration < RATE_FLUSH_MIN) - duration = RATE_FLUSH_MIN; - else if (duration > RATE_FLUSH_MAX) - duration = RATE_FLUSH_MAX; - } else - duration = RATE_FLUSH_MAX; - - rs_sta->flush_time = msecs_to_jiffies(duration); - - D_RATE("new flush period: %d msec ave %d\n", duration, - packet_count); - - mod_timer(&rs_sta->rate_scale_flush, - jiffies + rs_sta->flush_time); - - rs_sta->last_partial_flush = jiffies; - } else { - rs_sta->flush_time = RATE_FLUSH; - rs_sta->flush_pending = 0; - } - /* If there weren't any unflushed entries, we don't schedule the timer - * to run again */ - - rs_sta->last_flush = jiffies; - - spin_unlock_irqrestore(&rs_sta->lock, flags); - - D_RATE("leave\n"); -} - -/** - * il3945_collect_tx_data - Update the success/failure sliding win - * - * We keep a sliding win of the last 64 packets transmitted - * at this rate. win->data contains the bitmask of successful - * packets. - */ -static void -il3945_collect_tx_data(struct il3945_rs_sta *rs_sta, - struct il3945_rate_scale_data *win, int success, - int retries, int idx) -{ - unsigned long flags; - s32 fail_count; - struct il_priv *il __maybe_unused = rs_sta->il; - - if (!retries) { - D_RATE("leave: retries == 0 -- should be at least 1\n"); - return; - } - - spin_lock_irqsave(&rs_sta->lock, flags); - - /* - * Keep track of only the latest 62 tx frame attempts in this rate's - * history win; anything older isn't really relevant any more. - * If we have filled up the sliding win, drop the oldest attempt; - * if the oldest attempt (highest bit in bitmap) shows "success", - * subtract "1" from the success counter (this is the main reason - * we keep these bitmaps!). - * */ - while (retries > 0) { - if (win->counter >= RATE_MAX_WINDOW) { - - /* remove earliest */ - win->counter = RATE_MAX_WINDOW - 1; - - if (win->data & (1ULL << (RATE_MAX_WINDOW - 1))) { - win->data &= ~(1ULL << (RATE_MAX_WINDOW - 1)); - win->success_counter--; - } - } - - /* Increment frames-attempted counter */ - win->counter++; - - /* Shift bitmap by one frame (throw away oldest history), - * OR in "1", and increment "success" if this - * frame was successful. */ - win->data <<= 1; - if (success > 0) { - win->success_counter++; - win->data |= 0x1; - success--; - } - - retries--; - } - - /* Calculate current success ratio, avoid divide-by-0! */ - if (win->counter > 0) - win->success_ratio = - 128 * (100 * win->success_counter) / win->counter; - else - win->success_ratio = IL_INVALID_VALUE; - - fail_count = win->counter - win->success_counter; - - /* Calculate average throughput, if we have enough history. */ - if (fail_count >= RATE_MIN_FAILURE_TH || - win->success_counter >= RATE_MIN_SUCCESS_TH) - win->average_tpt = - ((win->success_ratio * rs_sta->expected_tpt[idx] + - 64) / 128); - else - win->average_tpt = IL_INVALID_VALUE; - - /* Tag this win as having been updated */ - win->stamp = jiffies; - - spin_unlock_irqrestore(&rs_sta->lock, flags); -} - -/* - * Called after adding a new station to initialize rate scaling - */ -void -il3945_rs_rate_init(struct il_priv *il, struct ieee80211_sta *sta, u8 sta_id) -{ - struct ieee80211_hw *hw = il->hw; - struct ieee80211_conf *conf = &il->hw->conf; - struct il3945_sta_priv *psta; - struct il3945_rs_sta *rs_sta; - struct ieee80211_supported_band *sband; - int i; - - D_INFO("enter\n"); - if (sta_id == il->hw_params.bcast_id) - goto out; - - psta = (struct il3945_sta_priv *)sta->drv_priv; - rs_sta = &psta->rs_sta; - sband = hw->wiphy->bands[conf->chandef.chan->band]; - - rs_sta->il = il; - - rs_sta->start_rate = RATE_INVALID; - - /* default to just 802.11b */ - rs_sta->expected_tpt = il3945_expected_tpt_b; - - rs_sta->last_partial_flush = jiffies; - rs_sta->last_flush = jiffies; - rs_sta->flush_time = RATE_FLUSH; - rs_sta->last_tx_packets = 0; - - rs_sta->rate_scale_flush.data = (unsigned long)rs_sta; - rs_sta->rate_scale_flush.function = il3945_bg_rate_scale_flush; - - for (i = 0; i < RATE_COUNT_3945; i++) - il3945_clear_win(&rs_sta->win[i]); - - /* TODO: what is a good starting rate for STA? About middle? Maybe not - * the lowest or the highest rate.. Could consider using RSSI from - * previous packets? Need to have IEEE 802.1X auth succeed immediately - * after assoc.. */ - - for (i = sband->n_bitrates - 1; i >= 0; i--) { - if (sta->supp_rates[sband->band] & (1 << i)) { - rs_sta->last_txrate_idx = i; - break; - } - } - - il->_3945.sta_supp_rates = sta->supp_rates[sband->band]; - /* For 5 GHz band it start at IL_FIRST_OFDM_RATE */ - if (sband->band == IEEE80211_BAND_5GHZ) { - rs_sta->last_txrate_idx += IL_FIRST_OFDM_RATE; - il->_3945.sta_supp_rates <<= IL_FIRST_OFDM_RATE; - } - -out: - il->stations[sta_id].used &= ~IL_STA_UCODE_INPROGRESS; - - D_INFO("leave\n"); -} - -static void * -il3945_rs_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir) -{ - return hw->priv; -} - -/* rate scale requires free function to be implemented */ -static void -il3945_rs_free(void *il) -{ -} - -static void * -il3945_rs_alloc_sta(void *il_priv, struct ieee80211_sta *sta, gfp_t gfp) -{ - struct il3945_rs_sta *rs_sta; - struct il3945_sta_priv *psta = (void *)sta->drv_priv; - struct il_priv *il __maybe_unused = il_priv; - - D_RATE("enter\n"); - - rs_sta = &psta->rs_sta; - - spin_lock_init(&rs_sta->lock); - init_timer(&rs_sta->rate_scale_flush); - - D_RATE("leave\n"); - - return rs_sta; -} - -static void -il3945_rs_free_sta(void *il_priv, struct ieee80211_sta *sta, void *il_sta) -{ - struct il3945_rs_sta *rs_sta = il_sta; - - /* - * Be careful not to use any members of il3945_rs_sta (like trying - * to use il_priv to print out debugging) since it may not be fully - * initialized at this point. - */ - del_timer_sync(&rs_sta->rate_scale_flush); -} - -/** - * il3945_rs_tx_status - Update rate control values based on Tx results - * - * NOTE: Uses il_priv->retry_rate for the # of retries attempted by - * the hardware for each rate. - */ -static void -il3945_rs_tx_status(void *il_rate, struct ieee80211_supported_band *sband, - struct ieee80211_sta *sta, void *il_sta, - struct sk_buff *skb) -{ - s8 retries = 0, current_count; - int scale_rate_idx, first_idx, last_idx; - unsigned long flags; - struct il_priv *il = (struct il_priv *)il_rate; - struct il3945_rs_sta *rs_sta = il_sta; - struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); - - D_RATE("enter\n"); - - retries = info->status.rates[0].count; - /* Sanity Check for retries */ - if (retries > RATE_RETRY_TH) - retries = RATE_RETRY_TH; - - first_idx = sband->bitrates[info->status.rates[0].idx].hw_value; - if (first_idx < 0 || first_idx >= RATE_COUNT_3945) { - D_RATE("leave: Rate out of bounds: %d\n", first_idx); - return; - } - - if (!il_sta) { - D_RATE("leave: No STA il data to update!\n"); - return; - } - - /* Treat uninitialized rate scaling data same as non-existing. */ - if (!rs_sta->il) { - D_RATE("leave: STA il data uninitialized!\n"); - return; - } - - rs_sta->tx_packets++; - - scale_rate_idx = first_idx; - last_idx = first_idx; - - /* - * Update the win for each rate. We determine which rates - * were Tx'd based on the total number of retries vs. the number - * of retries configured for each rate -- currently set to the - * il value 'retry_rate' vs. rate specific - * - * On exit from this while loop last_idx indicates the rate - * at which the frame was finally transmitted (or failed if no - * ACK) - */ - while (retries > 1) { - if ((retries - 1) < il->retry_rate) { - current_count = (retries - 1); - last_idx = scale_rate_idx; - } else { - current_count = il->retry_rate; - last_idx = il3945_rs_next_rate(il, scale_rate_idx); - } - - /* Update this rate accounting for as many retries - * as was used for it (per current_count) */ - il3945_collect_tx_data(rs_sta, &rs_sta->win[scale_rate_idx], 0, - current_count, scale_rate_idx); - D_RATE("Update rate %d for %d retries.\n", scale_rate_idx, - current_count); - - retries -= current_count; - - scale_rate_idx = last_idx; - } - - /* Update the last idx win with success/failure based on ACK */ - D_RATE("Update rate %d with %s.\n", last_idx, - (info->flags & IEEE80211_TX_STAT_ACK) ? "success" : "failure"); - il3945_collect_tx_data(rs_sta, &rs_sta->win[last_idx], - info->flags & IEEE80211_TX_STAT_ACK, 1, - last_idx); - - /* We updated the rate scale win -- if its been more than - * flush_time since the last run, schedule the flush - * again */ - spin_lock_irqsave(&rs_sta->lock, flags); - - if (!rs_sta->flush_pending && - time_after(jiffies, rs_sta->last_flush + rs_sta->flush_time)) { - - rs_sta->last_partial_flush = jiffies; - rs_sta->flush_pending = 1; - mod_timer(&rs_sta->rate_scale_flush, - jiffies + rs_sta->flush_time); - } - - spin_unlock_irqrestore(&rs_sta->lock, flags); - - D_RATE("leave\n"); -} - -static u16 -il3945_get_adjacent_rate(struct il3945_rs_sta *rs_sta, u8 idx, u16 rate_mask, - enum ieee80211_band band) -{ - u8 high = RATE_INVALID; - u8 low = RATE_INVALID; - struct il_priv *il __maybe_unused = rs_sta->il; - - /* 802.11A walks to the next literal adjacent rate in - * the rate table */ - if (unlikely(band == IEEE80211_BAND_5GHZ)) { - int i; - u32 mask; - - /* Find the previous rate that is in the rate mask */ - i = idx - 1; - for (mask = (1 << i); i >= 0; i--, mask >>= 1) { - if (rate_mask & mask) { - low = i; - break; - } - } - - /* Find the next rate that is in the rate mask */ - i = idx + 1; - for (mask = (1 << i); i < RATE_COUNT_3945; i++, mask <<= 1) { - if (rate_mask & mask) { - high = i; - break; - } - } - - return (high << 8) | low; - } - - low = idx; - while (low != RATE_INVALID) { - if (rs_sta->tgg) - low = il3945_rates[low].prev_rs_tgg; - else - low = il3945_rates[low].prev_rs; - if (low == RATE_INVALID) - break; - if (rate_mask & (1 << low)) - break; - D_RATE("Skipping masked lower rate: %d\n", low); - } - - high = idx; - while (high != RATE_INVALID) { - if (rs_sta->tgg) - high = il3945_rates[high].next_rs_tgg; - else - high = il3945_rates[high].next_rs; - if (high == RATE_INVALID) - break; - if (rate_mask & (1 << high)) - break; - D_RATE("Skipping masked higher rate: %d\n", high); - } - - return (high << 8) | low; -} - -/** - * il3945_rs_get_rate - find the rate for the requested packet - * - * Returns the ieee80211_rate structure allocated by the driver. - * - * The rate control algorithm has no internal mapping between hw_mode's - * rate ordering and the rate ordering used by the rate control algorithm. - * - * The rate control algorithm uses a single table of rates that goes across - * the entire A/B/G spectrum vs. being limited to just one particular - * hw_mode. - * - * As such, we can't convert the idx obtained below into the hw_mode's - * rate table and must reference the driver allocated rate table - * - */ -static void -il3945_rs_get_rate(void *il_r, struct ieee80211_sta *sta, void *il_sta, - struct ieee80211_tx_rate_control *txrc) -{ - struct ieee80211_supported_band *sband = txrc->sband; - struct sk_buff *skb = txrc->skb; - u8 low = RATE_INVALID; - u8 high = RATE_INVALID; - u16 high_low; - int idx; - struct il3945_rs_sta *rs_sta = il_sta; - struct il3945_rate_scale_data *win = NULL; - int current_tpt = IL_INVALID_VALUE; - int low_tpt = IL_INVALID_VALUE; - int high_tpt = IL_INVALID_VALUE; - u32 fail_count; - s8 scale_action = 0; - unsigned long flags; - u16 rate_mask; - s8 max_rate_idx = -1; - struct il_priv *il __maybe_unused = (struct il_priv *)il_r; - struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); - - D_RATE("enter\n"); - - /* Treat uninitialized rate scaling data same as non-existing. */ - if (rs_sta && !rs_sta->il) { - D_RATE("Rate scaling information not initialized yet.\n"); - il_sta = NULL; - } - - if (rate_control_send_low(sta, il_sta, txrc)) - return; - - rate_mask = sta->supp_rates[sband->band]; - - /* get user max rate if set */ - max_rate_idx = txrc->max_rate_idx; - if (sband->band == IEEE80211_BAND_5GHZ && max_rate_idx != -1) - max_rate_idx += IL_FIRST_OFDM_RATE; - if (max_rate_idx < 0 || max_rate_idx >= RATE_COUNT) - max_rate_idx = -1; - - idx = min(rs_sta->last_txrate_idx & 0xffff, RATE_COUNT_3945 - 1); - - if (sband->band == IEEE80211_BAND_5GHZ) - rate_mask = rate_mask << IL_FIRST_OFDM_RATE; - - spin_lock_irqsave(&rs_sta->lock, flags); - - /* for recent assoc, choose best rate regarding - * to rssi value - */ - if (rs_sta->start_rate != RATE_INVALID) { - if (rs_sta->start_rate < idx && - (rate_mask & (1 << rs_sta->start_rate))) - idx = rs_sta->start_rate; - rs_sta->start_rate = RATE_INVALID; - } - - /* force user max rate if set by user */ - if (max_rate_idx != -1 && max_rate_idx < idx) { - if (rate_mask & (1 << max_rate_idx)) - idx = max_rate_idx; - } - - win = &(rs_sta->win[idx]); - - fail_count = win->counter - win->success_counter; - - if (fail_count < RATE_MIN_FAILURE_TH && - win->success_counter < RATE_MIN_SUCCESS_TH) { - spin_unlock_irqrestore(&rs_sta->lock, flags); - - D_RATE("Invalid average_tpt on rate %d: " - "counter: %d, success_counter: %d, " - "expected_tpt is %sNULL\n", idx, win->counter, - win->success_counter, - rs_sta->expected_tpt ? "not " : ""); - - /* Can't calculate this yet; not enough history */ - win->average_tpt = IL_INVALID_VALUE; - goto out; - - } - - current_tpt = win->average_tpt; - - high_low = - il3945_get_adjacent_rate(rs_sta, idx, rate_mask, sband->band); - low = high_low & 0xff; - high = (high_low >> 8) & 0xff; - - /* If user set max rate, dont allow higher than user constrain */ - if (max_rate_idx != -1 && max_rate_idx < high) - high = RATE_INVALID; - - /* Collect Measured throughputs of adjacent rates */ - if (low != RATE_INVALID) - low_tpt = rs_sta->win[low].average_tpt; - - if (high != RATE_INVALID) - high_tpt = rs_sta->win[high].average_tpt; - - spin_unlock_irqrestore(&rs_sta->lock, flags); - - scale_action = 0; - - /* Low success ratio , need to drop the rate */ - if (win->success_ratio < RATE_DECREASE_TH || !current_tpt) { - D_RATE("decrease rate because of low success_ratio\n"); - scale_action = -1; - /* No throughput measured yet for adjacent rates, - * try increase */ - } else if (low_tpt == IL_INVALID_VALUE && high_tpt == IL_INVALID_VALUE) { - - if (high != RATE_INVALID && - win->success_ratio >= RATE_INCREASE_TH) - scale_action = 1; - else if (low != RATE_INVALID) - scale_action = 0; - - /* Both adjacent throughputs are measured, but neither one has - * better throughput; we're using the best rate, don't change - * it! */ - } else if (low_tpt != IL_INVALID_VALUE && high_tpt != IL_INVALID_VALUE - && low_tpt < current_tpt && high_tpt < current_tpt) { - - D_RATE("No action -- low [%d] & high [%d] < " - "current_tpt [%d]\n", low_tpt, high_tpt, current_tpt); - scale_action = 0; - - /* At least one of the rates has better throughput */ - } else { - if (high_tpt != IL_INVALID_VALUE) { - - /* High rate has better throughput, Increase - * rate */ - if (high_tpt > current_tpt && - win->success_ratio >= RATE_INCREASE_TH) - scale_action = 1; - else { - D_RATE("decrease rate because of high tpt\n"); - scale_action = 0; - } - } else if (low_tpt != IL_INVALID_VALUE) { - if (low_tpt > current_tpt) { - D_RATE("decrease rate because of low tpt\n"); - scale_action = -1; - } else if (win->success_ratio >= RATE_INCREASE_TH) { - /* Lower rate has better - * throughput,decrease rate */ - scale_action = 1; - } - } - } - - /* Sanity check; asked for decrease, but success rate or throughput - * has been good at old rate. Don't change it. */ - if (scale_action == -1 && low != RATE_INVALID && - (win->success_ratio > RATE_HIGH_TH || - current_tpt > 100 * rs_sta->expected_tpt[low])) - scale_action = 0; - - switch (scale_action) { - case -1: - /* Decrese rate */ - if (low != RATE_INVALID) - idx = low; - break; - case 1: - /* Increase rate */ - if (high != RATE_INVALID) - idx = high; - - break; - case 0: - default: - /* No change */ - break; - } - - D_RATE("Selected %d (action %d) - low %d high %d\n", idx, scale_action, - low, high); - -out: - - if (sband->band == IEEE80211_BAND_5GHZ) { - if (WARN_ON_ONCE(idx < IL_FIRST_OFDM_RATE)) - idx = IL_FIRST_OFDM_RATE; - rs_sta->last_txrate_idx = idx; - info->control.rates[0].idx = idx - IL_FIRST_OFDM_RATE; - } else { - rs_sta->last_txrate_idx = idx; - info->control.rates[0].idx = rs_sta->last_txrate_idx; - } - info->control.rates[0].count = 1; - - D_RATE("leave: %d\n", idx); -} - -#ifdef CONFIG_MAC80211_DEBUGFS - -static ssize_t -il3945_sta_dbgfs_stats_table_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - char *buff; - int desc = 0; - int j; - ssize_t ret; - struct il3945_rs_sta *lq_sta = file->private_data; - - buff = kmalloc(1024, GFP_KERNEL); - if (!buff) - return -ENOMEM; - - desc += - sprintf(buff + desc, - "tx packets=%d last rate idx=%d\n" - "rate=0x%X flush time %d\n", lq_sta->tx_packets, - lq_sta->last_txrate_idx, lq_sta->start_rate, - jiffies_to_msecs(lq_sta->flush_time)); - for (j = 0; j < RATE_COUNT_3945; j++) { - desc += - sprintf(buff + desc, "counter=%d success=%d %%=%d\n", - lq_sta->win[j].counter, - lq_sta->win[j].success_counter, - lq_sta->win[j].success_ratio); - } - ret = simple_read_from_buffer(user_buf, count, ppos, buff, desc); - kfree(buff); - return ret; -} - -static const struct file_operations rs_sta_dbgfs_stats_table_ops = { - .read = il3945_sta_dbgfs_stats_table_read, - .open = simple_open, - .llseek = default_llseek, -}; - -static void -il3945_add_debugfs(void *il, void *il_sta, struct dentry *dir) -{ - struct il3945_rs_sta *lq_sta = il_sta; - - lq_sta->rs_sta_dbgfs_stats_table_file = - debugfs_create_file("rate_stats_table", 0600, dir, lq_sta, - &rs_sta_dbgfs_stats_table_ops); - -} - -static void -il3945_remove_debugfs(void *il, void *il_sta) -{ - struct il3945_rs_sta *lq_sta = il_sta; - debugfs_remove(lq_sta->rs_sta_dbgfs_stats_table_file); -} -#endif - -/* - * Initialization of rate scaling information is done by driver after - * the station is added. Since mac80211 calls this function before a - * station is added we ignore it. - */ -static void -il3945_rs_rate_init_stub(void *il_r, struct ieee80211_supported_band *sband, - struct cfg80211_chan_def *chandef, - struct ieee80211_sta *sta, void *il_sta) -{ -} - -static const struct rate_control_ops rs_ops = { - .name = RS_NAME, - .tx_status = il3945_rs_tx_status, - .get_rate = il3945_rs_get_rate, - .rate_init = il3945_rs_rate_init_stub, - .alloc = il3945_rs_alloc, - .free = il3945_rs_free, - .alloc_sta = il3945_rs_alloc_sta, - .free_sta = il3945_rs_free_sta, -#ifdef CONFIG_MAC80211_DEBUGFS - .add_sta_debugfs = il3945_add_debugfs, - .remove_sta_debugfs = il3945_remove_debugfs, -#endif - -}; - -void -il3945_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id) -{ - struct il_priv *il = hw->priv; - s32 rssi = 0; - unsigned long flags; - struct il3945_rs_sta *rs_sta; - struct ieee80211_sta *sta; - struct il3945_sta_priv *psta; - - D_RATE("enter\n"); - - rcu_read_lock(); - - sta = ieee80211_find_sta(il->vif, il->stations[sta_id].sta.sta.addr); - if (!sta) { - D_RATE("Unable to find station to initialize rate scaling.\n"); - rcu_read_unlock(); - return; - } - - psta = (void *)sta->drv_priv; - rs_sta = &psta->rs_sta; - - spin_lock_irqsave(&rs_sta->lock, flags); - - rs_sta->tgg = 0; - switch (il->band) { - case IEEE80211_BAND_2GHZ: - /* TODO: this always does G, not a regression */ - if (il->active.flags & RXON_FLG_TGG_PROTECT_MSK) { - rs_sta->tgg = 1; - rs_sta->expected_tpt = il3945_expected_tpt_g_prot; - } else - rs_sta->expected_tpt = il3945_expected_tpt_g; - break; - case IEEE80211_BAND_5GHZ: - rs_sta->expected_tpt = il3945_expected_tpt_a; - break; - default: - BUG(); - break; - } - - spin_unlock_irqrestore(&rs_sta->lock, flags); - - rssi = il->_3945.last_rx_rssi; - if (rssi == 0) - rssi = IL_MIN_RSSI_VAL; - - D_RATE("Network RSSI: %d\n", rssi); - - rs_sta->start_rate = il3945_get_rate_idx_by_rssi(rssi, il->band); - - D_RATE("leave: rssi %d assign rate idx: " "%d (plcp 0x%x)\n", rssi, - rs_sta->start_rate, il3945_rates[rs_sta->start_rate].plcp); - rcu_read_unlock(); -} - -int -il3945_rate_control_register(void) -{ - return ieee80211_rate_control_register(&rs_ops); -} - -void -il3945_rate_control_unregister(void) -{ - ieee80211_rate_control_unregister(&rs_ops); -} diff --git a/drivers/net/wireless/iwlegacy/3945.c b/drivers/net/wireless/iwlegacy/3945.c deleted file mode 100644 index 93bdf684babe..000000000000 --- a/drivers/net/wireless/iwlegacy/3945.c +++ /dev/null @@ -1,2741 +0,0 @@ -/****************************************************************************** - * - * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA - * - * The full GNU General Public License is included in this distribution in the - * file called LICENSE. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - *****************************************************************************/ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/pci.h> -#include <linux/dma-mapping.h> -#include <linux/delay.h> -#include <linux/sched.h> -#include <linux/skbuff.h> -#include <linux/netdevice.h> -#include <linux/firmware.h> -#include <linux/etherdevice.h> -#include <asm/unaligned.h> -#include <net/mac80211.h> - -#include "common.h" -#include "3945.h" - -/* Send led command */ -static int -il3945_send_led_cmd(struct il_priv *il, struct il_led_cmd *led_cmd) -{ - struct il_host_cmd cmd = { - .id = C_LEDS, - .len = sizeof(struct il_led_cmd), - .data = led_cmd, - .flags = CMD_ASYNC, - .callback = NULL, - }; - - return il_send_cmd(il, &cmd); -} - -#define IL_DECLARE_RATE_INFO(r, ip, in, rp, rn, pp, np) \ - [RATE_##r##M_IDX] = { RATE_##r##M_PLCP, \ - RATE_##r##M_IEEE, \ - RATE_##ip##M_IDX, \ - RATE_##in##M_IDX, \ - RATE_##rp##M_IDX, \ - RATE_##rn##M_IDX, \ - RATE_##pp##M_IDX, \ - RATE_##np##M_IDX, \ - RATE_##r##M_IDX_TBL, \ - RATE_##ip##M_IDX_TBL } - -/* - * Parameter order: - * rate, prev rate, next rate, prev tgg rate, next tgg rate - * - * If there isn't a valid next or previous rate then INV is used which - * maps to RATE_INVALID - * - */ -const struct il3945_rate_info il3945_rates[RATE_COUNT_3945] = { - IL_DECLARE_RATE_INFO(1, INV, 2, INV, 2, INV, 2), /* 1mbps */ - IL_DECLARE_RATE_INFO(2, 1, 5, 1, 5, 1, 5), /* 2mbps */ - IL_DECLARE_RATE_INFO(5, 2, 6, 2, 11, 2, 11), /*5.5mbps */ - IL_DECLARE_RATE_INFO(11, 9, 12, 5, 12, 5, 18), /* 11mbps */ - IL_DECLARE_RATE_INFO(6, 5, 9, 5, 11, 5, 11), /* 6mbps */ - IL_DECLARE_RATE_INFO(9, 6, 11, 5, 11, 5, 11), /* 9mbps */ - IL_DECLARE_RATE_INFO(12, 11, 18, 11, 18, 11, 18), /* 12mbps */ - IL_DECLARE_RATE_INFO(18, 12, 24, 12, 24, 11, 24), /* 18mbps */ - IL_DECLARE_RATE_INFO(24, 18, 36, 18, 36, 18, 36), /* 24mbps */ - IL_DECLARE_RATE_INFO(36, 24, 48, 24, 48, 24, 48), /* 36mbps */ - IL_DECLARE_RATE_INFO(48, 36, 54, 36, 54, 36, 54), /* 48mbps */ - IL_DECLARE_RATE_INFO(54, 48, INV, 48, INV, 48, INV), /* 54mbps */ -}; - -static inline u8 -il3945_get_prev_ieee_rate(u8 rate_idx) -{ - u8 rate = il3945_rates[rate_idx].prev_ieee; - - if (rate == RATE_INVALID) - rate = rate_idx; - return rate; -} - -/* 1 = enable the il3945_disable_events() function */ -#define IL_EVT_DISABLE (0) -#define IL_EVT_DISABLE_SIZE (1532/32) - -/** - * il3945_disable_events - Disable selected events in uCode event log - * - * Disable an event by writing "1"s into "disable" - * bitmap in SRAM. Bit position corresponds to Event # (id/type). - * Default values of 0 enable uCode events to be logged. - * Use for only special debugging. This function is just a placeholder as-is, - * you'll need to provide the special bits! ... - * ... and set IL_EVT_DISABLE to 1. */ -void -il3945_disable_events(struct il_priv *il) -{ - int i; - u32 base; /* SRAM address of event log header */ - u32 disable_ptr; /* SRAM address of event-disable bitmap array */ - u32 array_size; /* # of u32 entries in array */ - static const u32 evt_disable[IL_EVT_DISABLE_SIZE] = { - 0x00000000, /* 31 - 0 Event id numbers */ - 0x00000000, /* 63 - 32 */ - 0x00000000, /* 95 - 64 */ - 0x00000000, /* 127 - 96 */ - 0x00000000, /* 159 - 128 */ - 0x00000000, /* 191 - 160 */ - 0x00000000, /* 223 - 192 */ - 0x00000000, /* 255 - 224 */ - 0x00000000, /* 287 - 256 */ - 0x00000000, /* 319 - 288 */ - 0x00000000, /* 351 - 320 */ - 0x00000000, /* 383 - 352 */ - 0x00000000, /* 415 - 384 */ - 0x00000000, /* 447 - 416 */ - 0x00000000, /* 479 - 448 */ - 0x00000000, /* 511 - 480 */ - 0x00000000, /* 543 - 512 */ - 0x00000000, /* 575 - 544 */ - 0x00000000, /* 607 - 576 */ - 0x00000000, /* 639 - 608 */ - 0x00000000, /* 671 - 640 */ - 0x00000000, /* 703 - 672 */ - 0x00000000, /* 735 - 704 */ - 0x00000000, /* 767 - 736 */ - 0x00000000, /* 799 - 768 */ - 0x00000000, /* 831 - 800 */ - 0x00000000, /* 863 - 832 */ - 0x00000000, /* 895 - 864 */ - 0x00000000, /* 927 - 896 */ - 0x00000000, /* 959 - 928 */ - 0x00000000, /* 991 - 960 */ - 0x00000000, /* 1023 - 992 */ - 0x00000000, /* 1055 - 1024 */ - 0x00000000, /* 1087 - 1056 */ - 0x00000000, /* 1119 - 1088 */ - 0x00000000, /* 1151 - 1120 */ - 0x00000000, /* 1183 - 1152 */ - 0x00000000, /* 1215 - 1184 */ - 0x00000000, /* 1247 - 1216 */ - 0x00000000, /* 1279 - 1248 */ - 0x00000000, /* 1311 - 1280 */ - 0x00000000, /* 1343 - 1312 */ - 0x00000000, /* 1375 - 1344 */ - 0x00000000, /* 1407 - 1376 */ - 0x00000000, /* 1439 - 1408 */ - 0x00000000, /* 1471 - 1440 */ - 0x00000000, /* 1503 - 1472 */ - }; - - base = le32_to_cpu(il->card_alive.log_event_table_ptr); - if (!il3945_hw_valid_rtc_data_addr(base)) { - IL_ERR("Invalid event log pointer 0x%08X\n", base); - return; - } - - disable_ptr = il_read_targ_mem(il, base + (4 * sizeof(u32))); - array_size = il_read_targ_mem(il, base + (5 * sizeof(u32))); - - if (IL_EVT_DISABLE && array_size == IL_EVT_DISABLE_SIZE) { - D_INFO("Disabling selected uCode log events at 0x%x\n", - disable_ptr); - for (i = 0; i < IL_EVT_DISABLE_SIZE; i++) - il_write_targ_mem(il, disable_ptr + (i * sizeof(u32)), - evt_disable[i]); - - } else { - D_INFO("Selected uCode log events may be disabled\n"); - D_INFO(" by writing \"1\"s into disable bitmap\n"); - D_INFO(" in SRAM at 0x%x, size %d u32s\n", disable_ptr, - array_size); - } - -} - -static int -il3945_hwrate_to_plcp_idx(u8 plcp) -{ - int idx; - - for (idx = 0; idx < RATE_COUNT_3945; idx++) - if (il3945_rates[idx].plcp == plcp) - return idx; - return -1; -} - -#ifdef CONFIG_IWLEGACY_DEBUG -#define TX_STATUS_ENTRY(x) case TX_3945_STATUS_FAIL_ ## x: return #x - -static const char * -il3945_get_tx_fail_reason(u32 status) -{ - switch (status & TX_STATUS_MSK) { - case TX_3945_STATUS_SUCCESS: - return "SUCCESS"; - TX_STATUS_ENTRY(SHORT_LIMIT); - TX_STATUS_ENTRY(LONG_LIMIT); - TX_STATUS_ENTRY(FIFO_UNDERRUN); - TX_STATUS_ENTRY(MGMNT_ABORT); - TX_STATUS_ENTRY(NEXT_FRAG); - TX_STATUS_ENTRY(LIFE_EXPIRE); - TX_STATUS_ENTRY(DEST_PS); - TX_STATUS_ENTRY(ABORTED); - TX_STATUS_ENTRY(BT_RETRY); - TX_STATUS_ENTRY(STA_INVALID); - TX_STATUS_ENTRY(FRAG_DROPPED); - TX_STATUS_ENTRY(TID_DISABLE); - TX_STATUS_ENTRY(FRAME_FLUSHED); - TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL); - TX_STATUS_ENTRY(TX_LOCKED); - TX_STATUS_ENTRY(NO_BEACON_ON_RADAR); - } - - return "UNKNOWN"; -} -#else -static inline const char * -il3945_get_tx_fail_reason(u32 status) -{ - return ""; -} -#endif - -/* - * get ieee prev rate from rate scale table. - * for A and B mode we need to overright prev - * value - */ -int -il3945_rs_next_rate(struct il_priv *il, int rate) -{ - int next_rate = il3945_get_prev_ieee_rate(rate); - - switch (il->band) { - case IEEE80211_BAND_5GHZ: - if (rate == RATE_12M_IDX) - next_rate = RATE_9M_IDX; - else if (rate == RATE_6M_IDX) - next_rate = RATE_6M_IDX; - break; - case IEEE80211_BAND_2GHZ: - if (!(il->_3945.sta_supp_rates & IL_OFDM_RATES_MASK) && - il_is_associated(il)) { - if (rate == RATE_11M_IDX) - next_rate = RATE_5M_IDX; - } - break; - - default: - break; - } - - return next_rate; -} - -/** - * il3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd - * - * When FW advances 'R' idx, all entries between old and new 'R' idx - * need to be reclaimed. As result, some free space forms. If there is - * enough free space (> low mark), wake the stack that feeds us. - */ -static void -il3945_tx_queue_reclaim(struct il_priv *il, int txq_id, int idx) -{ - struct il_tx_queue *txq = &il->txq[txq_id]; - struct il_queue *q = &txq->q; - struct sk_buff *skb; - - BUG_ON(txq_id == IL39_CMD_QUEUE_NUM); - - for (idx = il_queue_inc_wrap(idx, q->n_bd); q->read_ptr != idx; - q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd)) { - - skb = txq->skbs[txq->q.read_ptr]; - ieee80211_tx_status_irqsafe(il->hw, skb); - txq->skbs[txq->q.read_ptr] = NULL; - il->ops->txq_free_tfd(il, txq); - } - - if (il_queue_space(q) > q->low_mark && txq_id >= 0 && - txq_id != IL39_CMD_QUEUE_NUM && il->mac80211_registered) - il_wake_queue(il, txq); -} - -/** - * il3945_hdl_tx - Handle Tx response - */ -static void -il3945_hdl_tx(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - u16 sequence = le16_to_cpu(pkt->hdr.sequence); - int txq_id = SEQ_TO_QUEUE(sequence); - int idx = SEQ_TO_IDX(sequence); - struct il_tx_queue *txq = &il->txq[txq_id]; - struct ieee80211_tx_info *info; - struct il3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0]; - u32 status = le32_to_cpu(tx_resp->status); - int rate_idx; - int fail; - - if (idx >= txq->q.n_bd || il_queue_used(&txq->q, idx) == 0) { - IL_ERR("Read idx for DMA queue txq_id (%d) idx %d " - "is out of range [0-%d] %d %d\n", txq_id, idx, - txq->q.n_bd, txq->q.write_ptr, txq->q.read_ptr); - return; - } - - /* - * Firmware will not transmit frame on passive channel, if it not yet - * received some valid frame on that channel. When this error happen - * we have to wait until firmware will unblock itself i.e. when we - * note received beacon or other frame. We unblock queues in - * il3945_pass_packet_to_mac80211 or in il_mac_bss_info_changed. - */ - if (unlikely((status & TX_STATUS_MSK) == TX_STATUS_FAIL_PASSIVE_NO_RX) && - il->iw_mode == NL80211_IFTYPE_STATION) { - il_stop_queues_by_reason(il, IL_STOP_REASON_PASSIVE); - D_INFO("Stopped queues - RX waiting on passive channel\n"); - } - - txq->time_stamp = jiffies; - info = IEEE80211_SKB_CB(txq->skbs[txq->q.read_ptr]); - ieee80211_tx_info_clear_status(info); - - /* Fill the MRR chain with some info about on-chip retransmissions */ - rate_idx = il3945_hwrate_to_plcp_idx(tx_resp->rate); - if (info->band == IEEE80211_BAND_5GHZ) - rate_idx -= IL_FIRST_OFDM_RATE; - - fail = tx_resp->failure_frame; - - info->status.rates[0].idx = rate_idx; - info->status.rates[0].count = fail + 1; /* add final attempt */ - - /* tx_status->rts_retry_count = tx_resp->failure_rts; */ - info->flags |= - ((status & TX_STATUS_MSK) == - TX_STATUS_SUCCESS) ? IEEE80211_TX_STAT_ACK : 0; - - D_TX("Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n", txq_id, - il3945_get_tx_fail_reason(status), status, tx_resp->rate, - tx_resp->failure_frame); - - D_TX_REPLY("Tx queue reclaim %d\n", idx); - il3945_tx_queue_reclaim(il, txq_id, idx); - - if (status & TX_ABORT_REQUIRED_MSK) - IL_ERR("TODO: Implement Tx ABORT REQUIRED!!!\n"); -} - -/***************************************************************************** - * - * Intel PRO/Wireless 3945ABG/BG Network Connection - * - * RX handler implementations - * - *****************************************************************************/ -#ifdef CONFIG_IWLEGACY_DEBUGFS -static void -il3945_accumulative_stats(struct il_priv *il, __le32 * stats) -{ - int i; - __le32 *prev_stats; - u32 *accum_stats; - u32 *delta, *max_delta; - - prev_stats = (__le32 *) &il->_3945.stats; - accum_stats = (u32 *) &il->_3945.accum_stats; - delta = (u32 *) &il->_3945.delta_stats; - max_delta = (u32 *) &il->_3945.max_delta; - - for (i = sizeof(__le32); i < sizeof(struct il3945_notif_stats); - i += - sizeof(__le32), stats++, prev_stats++, delta++, max_delta++, - accum_stats++) { - if (le32_to_cpu(*stats) > le32_to_cpu(*prev_stats)) { - *delta = - (le32_to_cpu(*stats) - le32_to_cpu(*prev_stats)); - *accum_stats += *delta; - if (*delta > *max_delta) - *max_delta = *delta; - } - } - - /* reset accumulative stats for "no-counter" type stats */ - il->_3945.accum_stats.general.temperature = - il->_3945.stats.general.temperature; - il->_3945.accum_stats.general.ttl_timestamp = - il->_3945.stats.general.ttl_timestamp; -} -#endif - -void -il3945_hdl_stats(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - - D_RX("Statistics notification received (%d vs %d).\n", - (int)sizeof(struct il3945_notif_stats), - le32_to_cpu(pkt->len_n_flags) & IL_RX_FRAME_SIZE_MSK); -#ifdef CONFIG_IWLEGACY_DEBUGFS - il3945_accumulative_stats(il, (__le32 *) &pkt->u.raw); -#endif - - memcpy(&il->_3945.stats, pkt->u.raw, sizeof(il->_3945.stats)); -} - -void -il3945_hdl_c_stats(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - __le32 *flag = (__le32 *) &pkt->u.raw; - - if (le32_to_cpu(*flag) & UCODE_STATS_CLEAR_MSK) { -#ifdef CONFIG_IWLEGACY_DEBUGFS - memset(&il->_3945.accum_stats, 0, - sizeof(struct il3945_notif_stats)); - memset(&il->_3945.delta_stats, 0, - sizeof(struct il3945_notif_stats)); - memset(&il->_3945.max_delta, 0, - sizeof(struct il3945_notif_stats)); -#endif - D_RX("Statistics have been cleared\n"); - } - il3945_hdl_stats(il, rxb); -} - -/****************************************************************************** - * - * Misc. internal state and helper functions - * - ******************************************************************************/ - -/* This is necessary only for a number of stats, see the caller. */ -static int -il3945_is_network_packet(struct il_priv *il, struct ieee80211_hdr *header) -{ - /* Filter incoming packets to determine if they are targeted toward - * this network, discarding packets coming from ourselves */ - switch (il->iw_mode) { - case NL80211_IFTYPE_ADHOC: /* Header: Dest. | Source | BSSID */ - /* packets to our IBSS update information */ - return ether_addr_equal_64bits(header->addr3, il->bssid); - case NL80211_IFTYPE_STATION: /* Header: Dest. | AP{BSSID} | Source */ - /* packets to our IBSS update information */ - return ether_addr_equal_64bits(header->addr2, il->bssid); - default: - return 1; - } -} - -#define SMALL_PACKET_SIZE 256 - -static void -il3945_pass_packet_to_mac80211(struct il_priv *il, struct il_rx_buf *rxb, - struct ieee80211_rx_status *stats) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)IL_RX_DATA(pkt); - struct il3945_rx_frame_hdr *rx_hdr = IL_RX_HDR(pkt); - struct il3945_rx_frame_end *rx_end = IL_RX_END(pkt); - u32 len = le16_to_cpu(rx_hdr->len); - struct sk_buff *skb; - __le16 fc = hdr->frame_control; - u32 fraglen = PAGE_SIZE << il->hw_params.rx_page_order; - - /* We received data from the HW, so stop the watchdog */ - if (unlikely(len + IL39_RX_FRAME_SIZE > fraglen)) { - D_DROP("Corruption detected!\n"); - return; - } - - /* We only process data packets if the interface is open */ - if (unlikely(!il->is_open)) { - D_DROP("Dropping packet while interface is not open.\n"); - return; - } - - if (unlikely(test_bit(IL_STOP_REASON_PASSIVE, &il->stop_reason))) { - il_wake_queues_by_reason(il, IL_STOP_REASON_PASSIVE); - D_INFO("Woke queues - frame received on passive channel\n"); - } - - skb = dev_alloc_skb(SMALL_PACKET_SIZE); - if (!skb) { - IL_ERR("dev_alloc_skb failed\n"); - return; - } - - if (!il3945_mod_params.sw_crypto) - il_set_decrypted_flag(il, (struct ieee80211_hdr *)pkt, - le32_to_cpu(rx_end->status), stats); - - /* If frame is small enough to fit into skb->head, copy it - * and do not consume a full page - */ - if (len <= SMALL_PACKET_SIZE) { - memcpy(skb_put(skb, len), rx_hdr->payload, len); - } else { - skb_add_rx_frag(skb, 0, rxb->page, - (void *)rx_hdr->payload - (void *)pkt, len, - fraglen); - il->alloc_rxb_page--; - rxb->page = NULL; - } - il_update_stats(il, false, fc, len); - memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats)); - - ieee80211_rx(il->hw, skb); -} - -#define IL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6) - -static void -il3945_hdl_rx(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct ieee80211_hdr *header; - struct ieee80211_rx_status rx_status = {}; - struct il_rx_pkt *pkt = rxb_addr(rxb); - struct il3945_rx_frame_stats *rx_stats = IL_RX_STATS(pkt); - struct il3945_rx_frame_hdr *rx_hdr = IL_RX_HDR(pkt); - struct il3945_rx_frame_end *rx_end = IL_RX_END(pkt); - u16 rx_stats_sig_avg __maybe_unused = le16_to_cpu(rx_stats->sig_avg); - u16 rx_stats_noise_diff __maybe_unused = - le16_to_cpu(rx_stats->noise_diff); - u8 network_packet; - - rx_status.flag = 0; - rx_status.mactime = le64_to_cpu(rx_end->timestamp); - rx_status.band = - (rx_hdr-> - phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ? IEEE80211_BAND_2GHZ : - IEEE80211_BAND_5GHZ; - rx_status.freq = - ieee80211_channel_to_frequency(le16_to_cpu(rx_hdr->channel), - rx_status.band); - - rx_status.rate_idx = il3945_hwrate_to_plcp_idx(rx_hdr->rate); - if (rx_status.band == IEEE80211_BAND_5GHZ) - rx_status.rate_idx -= IL_FIRST_OFDM_RATE; - - rx_status.antenna = - (le16_to_cpu(rx_hdr->phy_flags) & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> - 4; - - /* set the preamble flag if appropriate */ - if (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK) - rx_status.flag |= RX_FLAG_SHORTPRE; - - if ((unlikely(rx_stats->phy_count > 20))) { - D_DROP("dsp size out of range [0,20]: %d\n", - rx_stats->phy_count); - return; - } - - if (!(rx_end->status & RX_RES_STATUS_NO_CRC32_ERROR) || - !(rx_end->status & RX_RES_STATUS_NO_RXE_OVERFLOW)) { - D_RX("Bad CRC or FIFO: 0x%08X.\n", rx_end->status); - return; - } - - /* Convert 3945's rssi indicator to dBm */ - rx_status.signal = rx_stats->rssi - IL39_RSSI_OFFSET; - - D_STATS("Rssi %d sig_avg %d noise_diff %d\n", rx_status.signal, - rx_stats_sig_avg, rx_stats_noise_diff); - - header = (struct ieee80211_hdr *)IL_RX_DATA(pkt); - - network_packet = il3945_is_network_packet(il, header); - - D_STATS("[%c] %d RSSI:%d Signal:%u, Rate:%u\n", - network_packet ? '*' : ' ', le16_to_cpu(rx_hdr->channel), - rx_status.signal, rx_status.signal, rx_status.rate_idx); - - if (network_packet) { - il->_3945.last_beacon_time = - le32_to_cpu(rx_end->beacon_timestamp); - il->_3945.last_tsf = le64_to_cpu(rx_end->timestamp); - il->_3945.last_rx_rssi = rx_status.signal; - } - - il3945_pass_packet_to_mac80211(il, rxb, &rx_status); -} - -int -il3945_hw_txq_attach_buf_to_tfd(struct il_priv *il, struct il_tx_queue *txq, - dma_addr_t addr, u16 len, u8 reset, u8 pad) -{ - int count; - struct il_queue *q; - struct il3945_tfd *tfd, *tfd_tmp; - - q = &txq->q; - tfd_tmp = (struct il3945_tfd *)txq->tfds; - tfd = &tfd_tmp[q->write_ptr]; - - if (reset) - memset(tfd, 0, sizeof(*tfd)); - - count = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags)); - - if (count >= NUM_TFD_CHUNKS || count < 0) { - IL_ERR("Error can not send more than %d chunks\n", - NUM_TFD_CHUNKS); - return -EINVAL; - } - - tfd->tbs[count].addr = cpu_to_le32(addr); - tfd->tbs[count].len = cpu_to_le32(len); - - count++; - - tfd->control_flags = - cpu_to_le32(TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad)); - - return 0; -} - -/** - * il3945_hw_txq_free_tfd - Free one TFD, those at idx [txq->q.read_ptr] - * - * Does NOT advance any idxes - */ -void -il3945_hw_txq_free_tfd(struct il_priv *il, struct il_tx_queue *txq) -{ - struct il3945_tfd *tfd_tmp = (struct il3945_tfd *)txq->tfds; - int idx = txq->q.read_ptr; - struct il3945_tfd *tfd = &tfd_tmp[idx]; - struct pci_dev *dev = il->pci_dev; - int i; - int counter; - - /* sanity check */ - counter = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags)); - if (counter > NUM_TFD_CHUNKS) { - IL_ERR("Too many chunks: %i\n", counter); - /* @todo issue fatal error, it is quite serious situation */ - return; - } - - /* Unmap tx_cmd */ - if (counter) - pci_unmap_single(dev, dma_unmap_addr(&txq->meta[idx], mapping), - dma_unmap_len(&txq->meta[idx], len), - PCI_DMA_TODEVICE); - - /* unmap chunks if any */ - - for (i = 1; i < counter; i++) - pci_unmap_single(dev, le32_to_cpu(tfd->tbs[i].addr), - le32_to_cpu(tfd->tbs[i].len), - PCI_DMA_TODEVICE); - - /* free SKB */ - if (txq->skbs) { - struct sk_buff *skb = txq->skbs[txq->q.read_ptr]; - - /* can be called from irqs-disabled context */ - if (skb) { - dev_kfree_skb_any(skb); - txq->skbs[txq->q.read_ptr] = NULL; - } - } -} - -/** - * il3945_hw_build_tx_cmd_rate - Add rate portion to TX_CMD: - * -*/ -void -il3945_hw_build_tx_cmd_rate(struct il_priv *il, struct il_device_cmd *cmd, - struct ieee80211_tx_info *info, - struct ieee80211_hdr *hdr, int sta_id) -{ - u16 hw_value = ieee80211_get_tx_rate(il->hw, info)->hw_value; - u16 rate_idx = min(hw_value & 0xffff, RATE_COUNT_3945 - 1); - u16 rate_mask; - int rate; - const u8 rts_retry_limit = 7; - u8 data_retry_limit; - __le32 tx_flags; - __le16 fc = hdr->frame_control; - struct il3945_tx_cmd *tx_cmd = (struct il3945_tx_cmd *)cmd->cmd.payload; - - rate = il3945_rates[rate_idx].plcp; - tx_flags = tx_cmd->tx_flags; - - /* We need to figure out how to get the sta->supp_rates while - * in this running context */ - rate_mask = RATES_MASK_3945; - - /* Set retry limit on DATA packets and Probe Responses */ - if (ieee80211_is_probe_resp(fc)) - data_retry_limit = 3; - else - data_retry_limit = IL_DEFAULT_TX_RETRY; - tx_cmd->data_retry_limit = data_retry_limit; - /* Set retry limit on RTS packets */ - tx_cmd->rts_retry_limit = min(data_retry_limit, rts_retry_limit); - - tx_cmd->rate = rate; - tx_cmd->tx_flags = tx_flags; - - /* OFDM */ - tx_cmd->supp_rates[0] = - ((rate_mask & IL_OFDM_RATES_MASK) >> IL_FIRST_OFDM_RATE) & 0xFF; - - /* CCK */ - tx_cmd->supp_rates[1] = (rate_mask & 0xF); - - D_RATE("Tx sta id: %d, rate: %d (plcp), flags: 0x%4X " - "cck/ofdm mask: 0x%x/0x%x\n", sta_id, tx_cmd->rate, - le32_to_cpu(tx_cmd->tx_flags), tx_cmd->supp_rates[1], - tx_cmd->supp_rates[0]); -} - -static u8 -il3945_sync_sta(struct il_priv *il, int sta_id, u16 tx_rate) -{ - unsigned long flags_spin; - struct il_station_entry *station; - - if (sta_id == IL_INVALID_STATION) - return IL_INVALID_STATION; - - spin_lock_irqsave(&il->sta_lock, flags_spin); - station = &il->stations[sta_id]; - - station->sta.sta.modify_mask = STA_MODIFY_TX_RATE_MSK; - station->sta.rate_n_flags = cpu_to_le16(tx_rate); - station->sta.mode = STA_CONTROL_MODIFY_MSK; - il_send_add_sta(il, &station->sta, CMD_ASYNC); - spin_unlock_irqrestore(&il->sta_lock, flags_spin); - - D_RATE("SCALE sync station %d to rate %d\n", sta_id, tx_rate); - return sta_id; -} - -static void -il3945_set_pwr_vmain(struct il_priv *il) -{ -/* - * (for documentation purposes) - * to set power to V_AUX, do - - if (pci_pme_capable(il->pci_dev, PCI_D3cold)) { - il_set_bits_mask_prph(il, APMG_PS_CTRL_REG, - APMG_PS_CTRL_VAL_PWR_SRC_VAUX, - ~APMG_PS_CTRL_MSK_PWR_SRC); - - _il_poll_bit(il, CSR_GPIO_IN, - CSR_GPIO_IN_VAL_VAUX_PWR_SRC, - CSR_GPIO_IN_BIT_AUX_POWER, 5000); - } - */ - - il_set_bits_mask_prph(il, APMG_PS_CTRL_REG, - APMG_PS_CTRL_VAL_PWR_SRC_VMAIN, - ~APMG_PS_CTRL_MSK_PWR_SRC); - - _il_poll_bit(il, CSR_GPIO_IN, CSR_GPIO_IN_VAL_VMAIN_PWR_SRC, - CSR_GPIO_IN_BIT_AUX_POWER, 5000); -} - -static int -il3945_rx_init(struct il_priv *il, struct il_rx_queue *rxq) -{ - il_wr(il, FH39_RCSR_RBD_BASE(0), rxq->bd_dma); - il_wr(il, FH39_RCSR_RPTR_ADDR(0), rxq->rb_stts_dma); - il_wr(il, FH39_RCSR_WPTR(0), 0); - il_wr(il, FH39_RCSR_CONFIG(0), - FH39_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE | - FH39_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE | - FH39_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN | - FH39_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128 | (RX_QUEUE_SIZE_LOG - << - FH39_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE) - | FH39_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST | (1 << - FH39_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH) - | FH39_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH); - - /* fake read to flush all prev I/O */ - il_rd(il, FH39_RSSR_CTRL); - - return 0; -} - -static int -il3945_tx_reset(struct il_priv *il) -{ - /* bypass mode */ - il_wr_prph(il, ALM_SCD_MODE_REG, 0x2); - - /* RA 0 is active */ - il_wr_prph(il, ALM_SCD_ARASTAT_REG, 0x01); - - /* all 6 fifo are active */ - il_wr_prph(il, ALM_SCD_TXFACT_REG, 0x3f); - - il_wr_prph(il, ALM_SCD_SBYP_MODE_1_REG, 0x010000); - il_wr_prph(il, ALM_SCD_SBYP_MODE_2_REG, 0x030002); - il_wr_prph(il, ALM_SCD_TXF4MF_REG, 0x000004); - il_wr_prph(il, ALM_SCD_TXF5MF_REG, 0x000005); - - il_wr(il, FH39_TSSR_CBB_BASE, il->_3945.shared_phys); - - il_wr(il, FH39_TSSR_MSG_CONFIG, - FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON | - FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON | - FH39_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B | - FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON | - FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON | - FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH | - FH39_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH); - - return 0; -} - -/** - * il3945_txq_ctx_reset - Reset TX queue context - * - * Destroys all DMA structures and initialize them again - */ -static int -il3945_txq_ctx_reset(struct il_priv *il) -{ - int rc, txq_id; - - il3945_hw_txq_ctx_free(il); - - /* allocate tx queue structure */ - rc = il_alloc_txq_mem(il); - if (rc) - return rc; - - /* Tx CMD queue */ - rc = il3945_tx_reset(il); - if (rc) - goto error; - - /* Tx queue(s) */ - for (txq_id = 0; txq_id < il->hw_params.max_txq_num; txq_id++) { - rc = il_tx_queue_init(il, txq_id); - if (rc) { - IL_ERR("Tx %d queue init failed\n", txq_id); - goto error; - } - } - - return rc; - -error: - il3945_hw_txq_ctx_free(il); - return rc; -} - -/* - * Start up 3945's basic functionality after it has been reset - * (e.g. after platform boot, or shutdown via il_apm_stop()) - * NOTE: This does not load uCode nor start the embedded processor - */ -static int -il3945_apm_init(struct il_priv *il) -{ - int ret = il_apm_init(il); - - /* Clear APMG (NIC's internal power management) interrupts */ - il_wr_prph(il, APMG_RTC_INT_MSK_REG, 0x0); - il_wr_prph(il, APMG_RTC_INT_STT_REG, 0xFFFFFFFF); - - /* Reset radio chip */ - il_set_bits_prph(il, APMG_PS_CTRL_REG, APMG_PS_CTRL_VAL_RESET_REQ); - udelay(5); - il_clear_bits_prph(il, APMG_PS_CTRL_REG, APMG_PS_CTRL_VAL_RESET_REQ); - - return ret; -} - -static void -il3945_nic_config(struct il_priv *il) -{ - struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom; - unsigned long flags; - u8 rev_id = il->pci_dev->revision; - - spin_lock_irqsave(&il->lock, flags); - - /* Determine HW type */ - D_INFO("HW Revision ID = 0x%X\n", rev_id); - - if (rev_id & PCI_CFG_REV_ID_BIT_RTP) - D_INFO("RTP type\n"); - else if (rev_id & PCI_CFG_REV_ID_BIT_BASIC_SKU) { - D_INFO("3945 RADIO-MB type\n"); - il_set_bit(il, CSR_HW_IF_CONFIG_REG, - CSR39_HW_IF_CONFIG_REG_BIT_3945_MB); - } else { - D_INFO("3945 RADIO-MM type\n"); - il_set_bit(il, CSR_HW_IF_CONFIG_REG, - CSR39_HW_IF_CONFIG_REG_BIT_3945_MM); - } - - if (EEPROM_SKU_CAP_OP_MODE_MRC == eeprom->sku_cap) { - D_INFO("SKU OP mode is mrc\n"); - il_set_bit(il, CSR_HW_IF_CONFIG_REG, - CSR39_HW_IF_CONFIG_REG_BIT_SKU_MRC); - } else - D_INFO("SKU OP mode is basic\n"); - - if ((eeprom->board_revision & 0xF0) == 0xD0) { - D_INFO("3945ABG revision is 0x%X\n", eeprom->board_revision); - il_set_bit(il, CSR_HW_IF_CONFIG_REG, - CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE); - } else { - D_INFO("3945ABG revision is 0x%X\n", eeprom->board_revision); - il_clear_bit(il, CSR_HW_IF_CONFIG_REG, - CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE); - } - - if (eeprom->almgor_m_version <= 1) { - il_set_bit(il, CSR_HW_IF_CONFIG_REG, - CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_A); - D_INFO("Card M type A version is 0x%X\n", - eeprom->almgor_m_version); - } else { - D_INFO("Card M type B version is 0x%X\n", - eeprom->almgor_m_version); - il_set_bit(il, CSR_HW_IF_CONFIG_REG, - CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_B); - } - spin_unlock_irqrestore(&il->lock, flags); - - if (eeprom->sku_cap & EEPROM_SKU_CAP_SW_RF_KILL_ENABLE) - D_RF_KILL("SW RF KILL supported in EEPROM.\n"); - - if (eeprom->sku_cap & EEPROM_SKU_CAP_HW_RF_KILL_ENABLE) - D_RF_KILL("HW RF KILL supported in EEPROM.\n"); -} - -int -il3945_hw_nic_init(struct il_priv *il) -{ - int rc; - unsigned long flags; - struct il_rx_queue *rxq = &il->rxq; - - spin_lock_irqsave(&il->lock, flags); - il3945_apm_init(il); - spin_unlock_irqrestore(&il->lock, flags); - - il3945_set_pwr_vmain(il); - il3945_nic_config(il); - - /* Allocate the RX queue, or reset if it is already allocated */ - if (!rxq->bd) { - rc = il_rx_queue_alloc(il); - if (rc) { - IL_ERR("Unable to initialize Rx queue\n"); - return -ENOMEM; - } - } else - il3945_rx_queue_reset(il, rxq); - - il3945_rx_replenish(il); - - il3945_rx_init(il, rxq); - - /* Look at using this instead: - rxq->need_update = 1; - il_rx_queue_update_write_ptr(il, rxq); - */ - - il_wr(il, FH39_RCSR_WPTR(0), rxq->write & ~7); - - rc = il3945_txq_ctx_reset(il); - if (rc) - return rc; - - set_bit(S_INIT, &il->status); - - return 0; -} - -/** - * il3945_hw_txq_ctx_free - Free TXQ Context - * - * Destroy all TX DMA queues and structures - */ -void -il3945_hw_txq_ctx_free(struct il_priv *il) -{ - int txq_id; - - /* Tx queues */ - if (il->txq) - for (txq_id = 0; txq_id < il->hw_params.max_txq_num; txq_id++) - if (txq_id == IL39_CMD_QUEUE_NUM) - il_cmd_queue_free(il); - else - il_tx_queue_free(il, txq_id); - - /* free tx queue structure */ - il_free_txq_mem(il); -} - -void -il3945_hw_txq_ctx_stop(struct il_priv *il) -{ - int txq_id; - - /* stop SCD */ - _il_wr_prph(il, ALM_SCD_MODE_REG, 0); - _il_wr_prph(il, ALM_SCD_TXFACT_REG, 0); - - /* reset TFD queues */ - for (txq_id = 0; txq_id < il->hw_params.max_txq_num; txq_id++) { - _il_wr(il, FH39_TCSR_CONFIG(txq_id), 0x0); - _il_poll_bit(il, FH39_TSSR_TX_STATUS, - FH39_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(txq_id), - FH39_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(txq_id), - 1000); - } -} - -/** - * il3945_hw_reg_adjust_power_by_temp - * return idx delta into power gain settings table -*/ -static int -il3945_hw_reg_adjust_power_by_temp(int new_reading, int old_reading) -{ - return (new_reading - old_reading) * (-11) / 100; -} - -/** - * il3945_hw_reg_temp_out_of_range - Keep temperature in sane range - */ -static inline int -il3945_hw_reg_temp_out_of_range(int temperature) -{ - return (temperature < -260 || temperature > 25) ? 1 : 0; -} - -int -il3945_hw_get_temperature(struct il_priv *il) -{ - return _il_rd(il, CSR_UCODE_DRV_GP2); -} - -/** - * il3945_hw_reg_txpower_get_temperature - * get the current temperature by reading from NIC -*/ -static int -il3945_hw_reg_txpower_get_temperature(struct il_priv *il) -{ - struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom; - int temperature; - - temperature = il3945_hw_get_temperature(il); - - /* driver's okay range is -260 to +25. - * human readable okay range is 0 to +285 */ - D_INFO("Temperature: %d\n", temperature + IL_TEMP_CONVERT); - - /* handle insane temp reading */ - if (il3945_hw_reg_temp_out_of_range(temperature)) { - IL_ERR("Error bad temperature value %d\n", temperature); - - /* if really really hot(?), - * substitute the 3rd band/group's temp measured at factory */ - if (il->last_temperature > 100) - temperature = eeprom->groups[2].temperature; - else /* else use most recent "sane" value from driver */ - temperature = il->last_temperature; - } - - return temperature; /* raw, not "human readable" */ -} - -/* Adjust Txpower only if temperature variance is greater than threshold. - * - * Both are lower than older versions' 9 degrees */ -#define IL_TEMPERATURE_LIMIT_TIMER 6 - -/** - * il3945_is_temp_calib_needed - determines if new calibration is needed - * - * records new temperature in tx_mgr->temperature. - * replaces tx_mgr->last_temperature *only* if calib needed - * (assumes caller will actually do the calibration!). */ -static int -il3945_is_temp_calib_needed(struct il_priv *il) -{ - int temp_diff; - - il->temperature = il3945_hw_reg_txpower_get_temperature(il); - temp_diff = il->temperature - il->last_temperature; - - /* get absolute value */ - if (temp_diff < 0) { - D_POWER("Getting cooler, delta %d,\n", temp_diff); - temp_diff = -temp_diff; - } else if (temp_diff == 0) - D_POWER("Same temp,\n"); - else - D_POWER("Getting warmer, delta %d,\n", temp_diff); - - /* if we don't need calibration, *don't* update last_temperature */ - if (temp_diff < IL_TEMPERATURE_LIMIT_TIMER) { - D_POWER("Timed thermal calib not needed\n"); - return 0; - } - - D_POWER("Timed thermal calib needed\n"); - - /* assume that caller will actually do calib ... - * update the "last temperature" value */ - il->last_temperature = il->temperature; - return 1; -} - -#define IL_MAX_GAIN_ENTRIES 78 -#define IL_CCK_FROM_OFDM_POWER_DIFF -5 -#define IL_CCK_FROM_OFDM_IDX_DIFF (10) - -/* radio and DSP power table, each step is 1/2 dB. - * 1st number is for RF analog gain, 2nd number is for DSP pre-DAC gain. */ -static struct il3945_tx_power power_gain_table[2][IL_MAX_GAIN_ENTRIES] = { - { - {251, 127}, /* 2.4 GHz, highest power */ - {251, 127}, - {251, 127}, - {251, 127}, - {251, 125}, - {251, 110}, - {251, 105}, - {251, 98}, - {187, 125}, - {187, 115}, - {187, 108}, - {187, 99}, - {243, 119}, - {243, 111}, - {243, 105}, - {243, 97}, - {243, 92}, - {211, 106}, - {211, 100}, - {179, 120}, - {179, 113}, - {179, 107}, - {147, 125}, - {147, 119}, - {147, 112}, - {147, 106}, - {147, 101}, - {147, 97}, - {147, 91}, - {115, 107}, - {235, 121}, - {235, 115}, - {235, 109}, - {203, 127}, - {203, 121}, - {203, 115}, - {203, 108}, - {203, 102}, - {203, 96}, - {203, 92}, - {171, 110}, - {171, 104}, - {171, 98}, - {139, 116}, - {227, 125}, - {227, 119}, - {227, 113}, - {227, 107}, - {227, 101}, - {227, 96}, - {195, 113}, - {195, 106}, - {195, 102}, - {195, 95}, - {163, 113}, - {163, 106}, - {163, 102}, - {163, 95}, - {131, 113}, - {131, 106}, - {131, 102}, - {131, 95}, - {99, 113}, - {99, 106}, - {99, 102}, - {99, 95}, - {67, 113}, - {67, 106}, - {67, 102}, - {67, 95}, - {35, 113}, - {35, 106}, - {35, 102}, - {35, 95}, - {3, 113}, - {3, 106}, - {3, 102}, - {3, 95} /* 2.4 GHz, lowest power */ - }, - { - {251, 127}, /* 5.x GHz, highest power */ - {251, 120}, - {251, 114}, - {219, 119}, - {219, 101}, - {187, 113}, - {187, 102}, - {155, 114}, - {155, 103}, - {123, 117}, - {123, 107}, - {123, 99}, - {123, 92}, - {91, 108}, - {59, 125}, - {59, 118}, - {59, 109}, - {59, 102}, - {59, 96}, - {59, 90}, - {27, 104}, - {27, 98}, - {27, 92}, - {115, 118}, - {115, 111}, - {115, 104}, - {83, 126}, - {83, 121}, - {83, 113}, - {83, 105}, - {83, 99}, - {51, 118}, - {51, 111}, - {51, 104}, - {51, 98}, - {19, 116}, - {19, 109}, - {19, 102}, - {19, 98}, - {19, 93}, - {171, 113}, - {171, 107}, - {171, 99}, - {139, 120}, - {139, 113}, - {139, 107}, - {139, 99}, - {107, 120}, - {107, 113}, - {107, 107}, - {107, 99}, - {75, 120}, - {75, 113}, - {75, 107}, - {75, 99}, - {43, 120}, - {43, 113}, - {43, 107}, - {43, 99}, - {11, 120}, - {11, 113}, - {11, 107}, - {11, 99}, - {131, 107}, - {131, 99}, - {99, 120}, - {99, 113}, - {99, 107}, - {99, 99}, - {67, 120}, - {67, 113}, - {67, 107}, - {67, 99}, - {35, 120}, - {35, 113}, - {35, 107}, - {35, 99}, - {3, 120} /* 5.x GHz, lowest power */ - } -}; - -static inline u8 -il3945_hw_reg_fix_power_idx(int idx) -{ - if (idx < 0) - return 0; - if (idx >= IL_MAX_GAIN_ENTRIES) - return IL_MAX_GAIN_ENTRIES - 1; - return (u8) idx; -} - -/* Kick off thermal recalibration check every 60 seconds */ -#define REG_RECALIB_PERIOD (60) - -/** - * il3945_hw_reg_set_scan_power - Set Tx power for scan probe requests - * - * Set (in our channel info database) the direct scan Tx power for 1 Mbit (CCK) - * or 6 Mbit (OFDM) rates. - */ -static void -il3945_hw_reg_set_scan_power(struct il_priv *il, u32 scan_tbl_idx, s32 rate_idx, - const s8 *clip_pwrs, - struct il_channel_info *ch_info, int band_idx) -{ - struct il3945_scan_power_info *scan_power_info; - s8 power; - u8 power_idx; - - scan_power_info = &ch_info->scan_pwr_info[scan_tbl_idx]; - - /* use this channel group's 6Mbit clipping/saturation pwr, - * but cap at regulatory scan power restriction (set during init - * based on eeprom channel data) for this channel. */ - power = min(ch_info->scan_power, clip_pwrs[RATE_6M_IDX_TBL]); - - power = min(power, il->tx_power_user_lmt); - scan_power_info->requested_power = power; - - /* find difference between new scan *power* and current "normal" - * Tx *power* for 6Mb. Use this difference (x2) to adjust the - * current "normal" temperature-compensated Tx power *idx* for - * this rate (1Mb or 6Mb) to yield new temp-compensated scan power - * *idx*. */ - power_idx = - ch_info->power_info[rate_idx].power_table_idx - (power - - ch_info-> - power_info - [RATE_6M_IDX_TBL]. - requested_power) * - 2; - - /* store reference idx that we use when adjusting *all* scan - * powers. So we can accommodate user (all channel) or spectrum - * management (single channel) power changes "between" temperature - * feedback compensation procedures. - * don't force fit this reference idx into gain table; it may be a - * negative number. This will help avoid errors when we're at - * the lower bounds (highest gains, for warmest temperatures) - * of the table. */ - - /* don't exceed table bounds for "real" setting */ - power_idx = il3945_hw_reg_fix_power_idx(power_idx); - - scan_power_info->power_table_idx = power_idx; - scan_power_info->tpc.tx_gain = - power_gain_table[band_idx][power_idx].tx_gain; - scan_power_info->tpc.dsp_atten = - power_gain_table[band_idx][power_idx].dsp_atten; -} - -/** - * il3945_send_tx_power - fill in Tx Power command with gain settings - * - * Configures power settings for all rates for the current channel, - * using values from channel info struct, and send to NIC - */ -static int -il3945_send_tx_power(struct il_priv *il) -{ - int rate_idx, i; - const struct il_channel_info *ch_info = NULL; - struct il3945_txpowertable_cmd txpower = { - .channel = il->active.channel, - }; - u16 chan; - - if (WARN_ONCE - (test_bit(S_SCAN_HW, &il->status), - "TX Power requested while scanning!\n")) - return -EAGAIN; - - chan = le16_to_cpu(il->active.channel); - - txpower.band = (il->band == IEEE80211_BAND_5GHZ) ? 0 : 1; - ch_info = il_get_channel_info(il, il->band, chan); - if (!ch_info) { - IL_ERR("Failed to get channel info for channel %d [%d]\n", chan, - il->band); - return -EINVAL; - } - - if (!il_is_channel_valid(ch_info)) { - D_POWER("Not calling TX_PWR_TBL_CMD on " "non-Tx channel.\n"); - return 0; - } - - /* fill cmd with power settings for all rates for current channel */ - /* Fill OFDM rate */ - for (rate_idx = IL_FIRST_OFDM_RATE, i = 0; - rate_idx <= IL39_LAST_OFDM_RATE; rate_idx++, i++) { - - txpower.power[i].tpc = ch_info->power_info[i].tpc; - txpower.power[i].rate = il3945_rates[rate_idx].plcp; - - D_POWER("ch %d:%d rf %d dsp %3d rate code 0x%02x\n", - le16_to_cpu(txpower.channel), txpower.band, - txpower.power[i].tpc.tx_gain, - txpower.power[i].tpc.dsp_atten, txpower.power[i].rate); - } - /* Fill CCK rates */ - for (rate_idx = IL_FIRST_CCK_RATE; rate_idx <= IL_LAST_CCK_RATE; - rate_idx++, i++) { - txpower.power[i].tpc = ch_info->power_info[i].tpc; - txpower.power[i].rate = il3945_rates[rate_idx].plcp; - - D_POWER("ch %d:%d rf %d dsp %3d rate code 0x%02x\n", - le16_to_cpu(txpower.channel), txpower.band, - txpower.power[i].tpc.tx_gain, - txpower.power[i].tpc.dsp_atten, txpower.power[i].rate); - } - - return il_send_cmd_pdu(il, C_TX_PWR_TBL, - sizeof(struct il3945_txpowertable_cmd), - &txpower); - -} - -/** - * il3945_hw_reg_set_new_power - Configures power tables at new levels - * @ch_info: Channel to update. Uses power_info.requested_power. - * - * Replace requested_power and base_power_idx ch_info fields for - * one channel. - * - * Called if user or spectrum management changes power preferences. - * Takes into account h/w and modulation limitations (clip power). - * - * This does *not* send anything to NIC, just sets up ch_info for one channel. - * - * NOTE: reg_compensate_for_temperature_dif() *must* be run after this to - * properly fill out the scan powers, and actual h/w gain settings, - * and send changes to NIC - */ -static int -il3945_hw_reg_set_new_power(struct il_priv *il, struct il_channel_info *ch_info) -{ - struct il3945_channel_power_info *power_info; - int power_changed = 0; - int i; - const s8 *clip_pwrs; - int power; - - /* Get this chnlgrp's rate-to-max/clip-powers table */ - clip_pwrs = il->_3945.clip_groups[ch_info->group_idx].clip_powers; - - /* Get this channel's rate-to-current-power settings table */ - power_info = ch_info->power_info; - - /* update OFDM Txpower settings */ - for (i = RATE_6M_IDX_TBL; i <= RATE_54M_IDX_TBL; i++, ++power_info) { - int delta_idx; - - /* limit new power to be no more than h/w capability */ - power = min(ch_info->curr_txpow, clip_pwrs[i]); - if (power == power_info->requested_power) - continue; - - /* find difference between old and new requested powers, - * update base (non-temp-compensated) power idx */ - delta_idx = (power - power_info->requested_power) * 2; - power_info->base_power_idx -= delta_idx; - - /* save new requested power value */ - power_info->requested_power = power; - - power_changed = 1; - } - - /* update CCK Txpower settings, based on OFDM 12M setting ... - * ... all CCK power settings for a given channel are the *same*. */ - if (power_changed) { - power = - ch_info->power_info[RATE_12M_IDX_TBL].requested_power + - IL_CCK_FROM_OFDM_POWER_DIFF; - - /* do all CCK rates' il3945_channel_power_info structures */ - for (i = RATE_1M_IDX_TBL; i <= RATE_11M_IDX_TBL; i++) { - power_info->requested_power = power; - power_info->base_power_idx = - ch_info->power_info[RATE_12M_IDX_TBL]. - base_power_idx + IL_CCK_FROM_OFDM_IDX_DIFF; - ++power_info; - } - } - - return 0; -} - -/** - * il3945_hw_reg_get_ch_txpower_limit - returns new power limit for channel - * - * NOTE: Returned power limit may be less (but not more) than requested, - * based strictly on regulatory (eeprom and spectrum mgt) limitations - * (no consideration for h/w clipping limitations). - */ -static int -il3945_hw_reg_get_ch_txpower_limit(struct il_channel_info *ch_info) -{ - s8 max_power; - -#if 0 - /* if we're using TGd limits, use lower of TGd or EEPROM */ - if (ch_info->tgd_data.max_power != 0) - max_power = - min(ch_info->tgd_data.max_power, - ch_info->eeprom.max_power_avg); - - /* else just use EEPROM limits */ - else -#endif - max_power = ch_info->eeprom.max_power_avg; - - return min(max_power, ch_info->max_power_avg); -} - -/** - * il3945_hw_reg_comp_txpower_temp - Compensate for temperature - * - * Compensate txpower settings of *all* channels for temperature. - * This only accounts for the difference between current temperature - * and the factory calibration temperatures, and bases the new settings - * on the channel's base_power_idx. - * - * If RxOn is "associated", this sends the new Txpower to NIC! - */ -static int -il3945_hw_reg_comp_txpower_temp(struct il_priv *il) -{ - struct il_channel_info *ch_info = NULL; - struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom; - int delta_idx; - const s8 *clip_pwrs; /* array of h/w max power levels for each rate */ - u8 a_band; - u8 rate_idx; - u8 scan_tbl_idx; - u8 i; - int ref_temp; - int temperature = il->temperature; - - if (il->disable_tx_power_cal || test_bit(S_SCANNING, &il->status)) { - /* do not perform tx power calibration */ - return 0; - } - /* set up new Tx power info for each and every channel, 2.4 and 5.x */ - for (i = 0; i < il->channel_count; i++) { - ch_info = &il->channel_info[i]; - a_band = il_is_channel_a_band(ch_info); - - /* Get this chnlgrp's factory calibration temperature */ - ref_temp = (s16) eeprom->groups[ch_info->group_idx].temperature; - - /* get power idx adjustment based on current and factory - * temps */ - delta_idx = - il3945_hw_reg_adjust_power_by_temp(temperature, ref_temp); - - /* set tx power value for all rates, OFDM and CCK */ - for (rate_idx = 0; rate_idx < RATE_COUNT_3945; rate_idx++) { - int power_idx = - ch_info->power_info[rate_idx].base_power_idx; - - /* temperature compensate */ - power_idx += delta_idx; - - /* stay within table range */ - power_idx = il3945_hw_reg_fix_power_idx(power_idx); - ch_info->power_info[rate_idx].power_table_idx = - (u8) power_idx; - ch_info->power_info[rate_idx].tpc = - power_gain_table[a_band][power_idx]; - } - - /* Get this chnlgrp's rate-to-max/clip-powers table */ - clip_pwrs = - il->_3945.clip_groups[ch_info->group_idx].clip_powers; - - /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */ - for (scan_tbl_idx = 0; scan_tbl_idx < IL_NUM_SCAN_RATES; - scan_tbl_idx++) { - s32 actual_idx = - (scan_tbl_idx == - 0) ? RATE_1M_IDX_TBL : RATE_6M_IDX_TBL; - il3945_hw_reg_set_scan_power(il, scan_tbl_idx, - actual_idx, clip_pwrs, - ch_info, a_band); - } - } - - /* send Txpower command for current channel to ucode */ - return il->ops->send_tx_power(il); -} - -int -il3945_hw_reg_set_txpower(struct il_priv *il, s8 power) -{ - struct il_channel_info *ch_info; - s8 max_power; - u8 a_band; - u8 i; - - if (il->tx_power_user_lmt == power) { - D_POWER("Requested Tx power same as current " "limit: %ddBm.\n", - power); - return 0; - } - - D_POWER("Setting upper limit clamp to %ddBm.\n", power); - il->tx_power_user_lmt = power; - - /* set up new Tx powers for each and every channel, 2.4 and 5.x */ - - for (i = 0; i < il->channel_count; i++) { - ch_info = &il->channel_info[i]; - a_band = il_is_channel_a_band(ch_info); - - /* find minimum power of all user and regulatory constraints - * (does not consider h/w clipping limitations) */ - max_power = il3945_hw_reg_get_ch_txpower_limit(ch_info); - max_power = min(power, max_power); - if (max_power != ch_info->curr_txpow) { - ch_info->curr_txpow = max_power; - - /* this considers the h/w clipping limitations */ - il3945_hw_reg_set_new_power(il, ch_info); - } - } - - /* update txpower settings for all channels, - * send to NIC if associated. */ - il3945_is_temp_calib_needed(il); - il3945_hw_reg_comp_txpower_temp(il); - - return 0; -} - -static int -il3945_send_rxon_assoc(struct il_priv *il) -{ - int rc = 0; - struct il_rx_pkt *pkt; - struct il3945_rxon_assoc_cmd rxon_assoc; - struct il_host_cmd cmd = { - .id = C_RXON_ASSOC, - .len = sizeof(rxon_assoc), - .flags = CMD_WANT_SKB, - .data = &rxon_assoc, - }; - const struct il_rxon_cmd *rxon1 = &il->staging; - const struct il_rxon_cmd *rxon2 = &il->active; - - if (rxon1->flags == rxon2->flags && - rxon1->filter_flags == rxon2->filter_flags && - rxon1->cck_basic_rates == rxon2->cck_basic_rates && - rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates) { - D_INFO("Using current RXON_ASSOC. Not resending.\n"); - return 0; - } - - rxon_assoc.flags = il->staging.flags; - rxon_assoc.filter_flags = il->staging.filter_flags; - rxon_assoc.ofdm_basic_rates = il->staging.ofdm_basic_rates; - rxon_assoc.cck_basic_rates = il->staging.cck_basic_rates; - rxon_assoc.reserved = 0; - - rc = il_send_cmd_sync(il, &cmd); - if (rc) - return rc; - - pkt = (struct il_rx_pkt *)cmd.reply_page; - if (pkt->hdr.flags & IL_CMD_FAILED_MSK) { - IL_ERR("Bad return from C_RXON_ASSOC command\n"); - rc = -EIO; - } - - il_free_pages(il, cmd.reply_page); - - return rc; -} - -/** - * il3945_commit_rxon - commit staging_rxon to hardware - * - * The RXON command in staging_rxon is committed to the hardware and - * the active_rxon structure is updated with the new data. This - * function correctly transitions out of the RXON_ASSOC_MSK state if - * a HW tune is required based on the RXON structure changes. - */ -int -il3945_commit_rxon(struct il_priv *il) -{ - /* cast away the const for active_rxon in this function */ - struct il3945_rxon_cmd *active_rxon = (void *)&il->active; - struct il3945_rxon_cmd *staging_rxon = (void *)&il->staging; - int rc = 0; - bool new_assoc = !!(staging_rxon->filter_flags & RXON_FILTER_ASSOC_MSK); - - if (test_bit(S_EXIT_PENDING, &il->status)) - return -EINVAL; - - if (!il_is_alive(il)) - return -1; - - /* always get timestamp with Rx frame */ - staging_rxon->flags |= RXON_FLG_TSF2HOST_MSK; - - /* select antenna */ - staging_rxon->flags &= ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK); - staging_rxon->flags |= il3945_get_antenna_flags(il); - - rc = il_check_rxon_cmd(il); - if (rc) { - IL_ERR("Invalid RXON configuration. Not committing.\n"); - return -EINVAL; - } - - /* If we don't need to send a full RXON, we can use - * il3945_rxon_assoc_cmd which is used to reconfigure filter - * and other flags for the current radio configuration. */ - if (!il_full_rxon_required(il)) { - rc = il_send_rxon_assoc(il); - if (rc) { - IL_ERR("Error setting RXON_ASSOC " - "configuration (%d).\n", rc); - return rc; - } - - memcpy(active_rxon, staging_rxon, sizeof(*active_rxon)); - /* - * We do not commit tx power settings while channel changing, - * do it now if tx power changed. - */ - il_set_tx_power(il, il->tx_power_next, false); - return 0; - } - - /* If we are currently associated and the new config requires - * an RXON_ASSOC and the new config wants the associated mask enabled, - * we must clear the associated from the active configuration - * before we apply the new config */ - if (il_is_associated(il) && new_assoc) { - D_INFO("Toggling associated bit on current RXON\n"); - active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; - - /* - * reserved4 and 5 could have been filled by the iwlcore code. - * Let's clear them before pushing to the 3945. - */ - active_rxon->reserved4 = 0; - active_rxon->reserved5 = 0; - rc = il_send_cmd_pdu(il, C_RXON, sizeof(struct il3945_rxon_cmd), - &il->active); - - /* If the mask clearing failed then we set - * active_rxon back to what it was previously */ - if (rc) { - active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK; - IL_ERR("Error clearing ASSOC_MSK on current " - "configuration (%d).\n", rc); - return rc; - } - il_clear_ucode_stations(il); - il_restore_stations(il); - } - - D_INFO("Sending RXON\n" "* with%s RXON_FILTER_ASSOC_MSK\n" - "* channel = %d\n" "* bssid = %pM\n", (new_assoc ? "" : "out"), - le16_to_cpu(staging_rxon->channel), staging_rxon->bssid_addr); - - /* - * reserved4 and 5 could have been filled by the iwlcore code. - * Let's clear them before pushing to the 3945. - */ - staging_rxon->reserved4 = 0; - staging_rxon->reserved5 = 0; - - il_set_rxon_hwcrypto(il, !il3945_mod_params.sw_crypto); - - /* Apply the new configuration */ - rc = il_send_cmd_pdu(il, C_RXON, sizeof(struct il3945_rxon_cmd), - staging_rxon); - if (rc) { - IL_ERR("Error setting new configuration (%d).\n", rc); - return rc; - } - - memcpy(active_rxon, staging_rxon, sizeof(*active_rxon)); - - if (!new_assoc) { - il_clear_ucode_stations(il); - il_restore_stations(il); - } - - /* If we issue a new RXON command which required a tune then we must - * send a new TXPOWER command or we won't be able to Tx any frames */ - rc = il_set_tx_power(il, il->tx_power_next, true); - if (rc) { - IL_ERR("Error setting Tx power (%d).\n", rc); - return rc; - } - - /* Init the hardware's rate fallback order based on the band */ - rc = il3945_init_hw_rate_table(il); - if (rc) { - IL_ERR("Error setting HW rate table: %02X\n", rc); - return -EIO; - } - - return 0; -} - -/** - * il3945_reg_txpower_periodic - called when time to check our temperature. - * - * -- reset periodic timer - * -- see if temp has changed enough to warrant re-calibration ... if so: - * -- correct coeffs for temp (can reset temp timer) - * -- save this temp as "last", - * -- send new set of gain settings to NIC - * NOTE: This should continue working, even when we're not associated, - * so we can keep our internal table of scan powers current. */ -void -il3945_reg_txpower_periodic(struct il_priv *il) -{ - /* This will kick in the "brute force" - * il3945_hw_reg_comp_txpower_temp() below */ - if (!il3945_is_temp_calib_needed(il)) - goto reschedule; - - /* Set up a new set of temp-adjusted TxPowers, send to NIC. - * This is based *only* on current temperature, - * ignoring any previous power measurements */ - il3945_hw_reg_comp_txpower_temp(il); - -reschedule: - queue_delayed_work(il->workqueue, &il->_3945.thermal_periodic, - REG_RECALIB_PERIOD * HZ); -} - -static void -il3945_bg_reg_txpower_periodic(struct work_struct *work) -{ - struct il_priv *il = container_of(work, struct il_priv, - _3945.thermal_periodic.work); - - mutex_lock(&il->mutex); - if (test_bit(S_EXIT_PENDING, &il->status) || il->txq == NULL) - goto out; - - il3945_reg_txpower_periodic(il); -out: - mutex_unlock(&il->mutex); -} - -/** - * il3945_hw_reg_get_ch_grp_idx - find the channel-group idx (0-4) for channel. - * - * This function is used when initializing channel-info structs. - * - * NOTE: These channel groups do *NOT* match the bands above! - * These channel groups are based on factory-tested channels; - * on A-band, EEPROM's "group frequency" entries represent the top - * channel in each group 1-4. Group 5 All B/G channels are in group 0. - */ -static u16 -il3945_hw_reg_get_ch_grp_idx(struct il_priv *il, - const struct il_channel_info *ch_info) -{ - struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom; - struct il3945_eeprom_txpower_group *ch_grp = &eeprom->groups[0]; - u8 group; - u16 group_idx = 0; /* based on factory calib frequencies */ - u8 grp_channel; - - /* Find the group idx for the channel ... don't use idx 1(?) */ - if (il_is_channel_a_band(ch_info)) { - for (group = 1; group < 5; group++) { - grp_channel = ch_grp[group].group_channel; - if (ch_info->channel <= grp_channel) { - group_idx = group; - break; - } - } - /* group 4 has a few channels *above* its factory cal freq */ - if (group == 5) - group_idx = 4; - } else - group_idx = 0; /* 2.4 GHz, group 0 */ - - D_POWER("Chnl %d mapped to grp %d\n", ch_info->channel, group_idx); - return group_idx; -} - -/** - * il3945_hw_reg_get_matched_power_idx - Interpolate to get nominal idx - * - * Interpolate to get nominal (i.e. at factory calibration temperature) idx - * into radio/DSP gain settings table for requested power. - */ -static int -il3945_hw_reg_get_matched_power_idx(struct il_priv *il, s8 requested_power, - s32 setting_idx, s32 *new_idx) -{ - const struct il3945_eeprom_txpower_group *chnl_grp = NULL; - struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom; - s32 idx0, idx1; - s32 power = 2 * requested_power; - s32 i; - const struct il3945_eeprom_txpower_sample *samples; - s32 gains0, gains1; - s32 res; - s32 denominator; - - chnl_grp = &eeprom->groups[setting_idx]; - samples = chnl_grp->samples; - for (i = 0; i < 5; i++) { - if (power == samples[i].power) { - *new_idx = samples[i].gain_idx; - return 0; - } - } - - if (power > samples[1].power) { - idx0 = 0; - idx1 = 1; - } else if (power > samples[2].power) { - idx0 = 1; - idx1 = 2; - } else if (power > samples[3].power) { - idx0 = 2; - idx1 = 3; - } else { - idx0 = 3; - idx1 = 4; - } - - denominator = (s32) samples[idx1].power - (s32) samples[idx0].power; - if (denominator == 0) - return -EINVAL; - gains0 = (s32) samples[idx0].gain_idx * (1 << 19); - gains1 = (s32) samples[idx1].gain_idx * (1 << 19); - res = - gains0 + (gains1 - gains0) * ((s32) power - - (s32) samples[idx0].power) / - denominator + (1 << 18); - *new_idx = res >> 19; - return 0; -} - -static void -il3945_hw_reg_init_channel_groups(struct il_priv *il) -{ - u32 i; - s32 rate_idx; - struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom; - const struct il3945_eeprom_txpower_group *group; - - D_POWER("Initializing factory calib info from EEPROM\n"); - - for (i = 0; i < IL_NUM_TX_CALIB_GROUPS; i++) { - s8 *clip_pwrs; /* table of power levels for each rate */ - s8 satur_pwr; /* saturation power for each chnl group */ - group = &eeprom->groups[i]; - - /* sanity check on factory saturation power value */ - if (group->saturation_power < 40) { - IL_WARN("Error: saturation power is %d, " - "less than minimum expected 40\n", - group->saturation_power); - return; - } - - /* - * Derive requested power levels for each rate, based on - * hardware capabilities (saturation power for band). - * Basic value is 3dB down from saturation, with further - * power reductions for highest 3 data rates. These - * backoffs provide headroom for high rate modulation - * power peaks, without too much distortion (clipping). - */ - /* we'll fill in this array with h/w max power levels */ - clip_pwrs = (s8 *) il->_3945.clip_groups[i].clip_powers; - - /* divide factory saturation power by 2 to find -3dB level */ - satur_pwr = (s8) (group->saturation_power >> 1); - - /* fill in channel group's nominal powers for each rate */ - for (rate_idx = 0; rate_idx < RATE_COUNT_3945; - rate_idx++, clip_pwrs++) { - switch (rate_idx) { - case RATE_36M_IDX_TBL: - if (i == 0) /* B/G */ - *clip_pwrs = satur_pwr; - else /* A */ - *clip_pwrs = satur_pwr - 5; - break; - case RATE_48M_IDX_TBL: - if (i == 0) - *clip_pwrs = satur_pwr - 7; - else - *clip_pwrs = satur_pwr - 10; - break; - case RATE_54M_IDX_TBL: - if (i == 0) - *clip_pwrs = satur_pwr - 9; - else - *clip_pwrs = satur_pwr - 12; - break; - default: - *clip_pwrs = satur_pwr; - break; - } - } - } -} - -/** - * il3945_txpower_set_from_eeprom - Set channel power info based on EEPROM - * - * Second pass (during init) to set up il->channel_info - * - * Set up Tx-power settings in our channel info database for each VALID - * (for this geo/SKU) channel, at all Tx data rates, based on eeprom values - * and current temperature. - * - * Since this is based on current temperature (at init time), these values may - * not be valid for very long, but it gives us a starting/default point, - * and allows us to active (i.e. using Tx) scan. - * - * This does *not* write values to NIC, just sets up our internal table. - */ -int -il3945_txpower_set_from_eeprom(struct il_priv *il) -{ - struct il_channel_info *ch_info = NULL; - struct il3945_channel_power_info *pwr_info; - struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom; - int delta_idx; - u8 rate_idx; - u8 scan_tbl_idx; - const s8 *clip_pwrs; /* array of power levels for each rate */ - u8 gain, dsp_atten; - s8 power; - u8 pwr_idx, base_pwr_idx, a_band; - u8 i; - int temperature; - - /* save temperature reference, - * so we can determine next time to calibrate */ - temperature = il3945_hw_reg_txpower_get_temperature(il); - il->last_temperature = temperature; - - il3945_hw_reg_init_channel_groups(il); - - /* initialize Tx power info for each and every channel, 2.4 and 5.x */ - for (i = 0, ch_info = il->channel_info; i < il->channel_count; - i++, ch_info++) { - a_band = il_is_channel_a_band(ch_info); - if (!il_is_channel_valid(ch_info)) - continue; - - /* find this channel's channel group (*not* "band") idx */ - ch_info->group_idx = il3945_hw_reg_get_ch_grp_idx(il, ch_info); - - /* Get this chnlgrp's rate->max/clip-powers table */ - clip_pwrs = - il->_3945.clip_groups[ch_info->group_idx].clip_powers; - - /* calculate power idx *adjustment* value according to - * diff between current temperature and factory temperature */ - delta_idx = - il3945_hw_reg_adjust_power_by_temp(temperature, - eeprom->groups[ch_info-> - group_idx]. - temperature); - - D_POWER("Delta idx for channel %d: %d [%d]\n", ch_info->channel, - delta_idx, temperature + IL_TEMP_CONVERT); - - /* set tx power value for all OFDM rates */ - for (rate_idx = 0; rate_idx < IL_OFDM_RATES; rate_idx++) { - s32 uninitialized_var(power_idx); - int rc; - - /* use channel group's clip-power table, - * but don't exceed channel's max power */ - s8 pwr = min(ch_info->max_power_avg, - clip_pwrs[rate_idx]); - - pwr_info = &ch_info->power_info[rate_idx]; - - /* get base (i.e. at factory-measured temperature) - * power table idx for this rate's power */ - rc = il3945_hw_reg_get_matched_power_idx(il, pwr, - ch_info-> - group_idx, - &power_idx); - if (rc) { - IL_ERR("Invalid power idx\n"); - return rc; - } - pwr_info->base_power_idx = (u8) power_idx; - - /* temperature compensate */ - power_idx += delta_idx; - - /* stay within range of gain table */ - power_idx = il3945_hw_reg_fix_power_idx(power_idx); - - /* fill 1 OFDM rate's il3945_channel_power_info struct */ - pwr_info->requested_power = pwr; - pwr_info->power_table_idx = (u8) power_idx; - pwr_info->tpc.tx_gain = - power_gain_table[a_band][power_idx].tx_gain; - pwr_info->tpc.dsp_atten = - power_gain_table[a_band][power_idx].dsp_atten; - } - - /* set tx power for CCK rates, based on OFDM 12 Mbit settings */ - pwr_info = &ch_info->power_info[RATE_12M_IDX_TBL]; - power = pwr_info->requested_power + IL_CCK_FROM_OFDM_POWER_DIFF; - pwr_idx = pwr_info->power_table_idx + IL_CCK_FROM_OFDM_IDX_DIFF; - base_pwr_idx = - pwr_info->base_power_idx + IL_CCK_FROM_OFDM_IDX_DIFF; - - /* stay within table range */ - pwr_idx = il3945_hw_reg_fix_power_idx(pwr_idx); - gain = power_gain_table[a_band][pwr_idx].tx_gain; - dsp_atten = power_gain_table[a_band][pwr_idx].dsp_atten; - - /* fill each CCK rate's il3945_channel_power_info structure - * NOTE: All CCK-rate Txpwrs are the same for a given chnl! - * NOTE: CCK rates start at end of OFDM rates! */ - for (rate_idx = 0; rate_idx < IL_CCK_RATES; rate_idx++) { - pwr_info = - &ch_info->power_info[rate_idx + IL_OFDM_RATES]; - pwr_info->requested_power = power; - pwr_info->power_table_idx = pwr_idx; - pwr_info->base_power_idx = base_pwr_idx; - pwr_info->tpc.tx_gain = gain; - pwr_info->tpc.dsp_atten = dsp_atten; - } - - /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */ - for (scan_tbl_idx = 0; scan_tbl_idx < IL_NUM_SCAN_RATES; - scan_tbl_idx++) { - s32 actual_idx = - (scan_tbl_idx == - 0) ? RATE_1M_IDX_TBL : RATE_6M_IDX_TBL; - il3945_hw_reg_set_scan_power(il, scan_tbl_idx, - actual_idx, clip_pwrs, - ch_info, a_band); - } - } - - return 0; -} - -int -il3945_hw_rxq_stop(struct il_priv *il) -{ - int ret; - - _il_wr(il, FH39_RCSR_CONFIG(0), 0); - ret = _il_poll_bit(il, FH39_RSSR_STATUS, - FH39_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, - FH39_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, - 1000); - if (ret < 0) - IL_ERR("Can't stop Rx DMA.\n"); - - return 0; -} - -int -il3945_hw_tx_queue_init(struct il_priv *il, struct il_tx_queue *txq) -{ - int txq_id = txq->q.id; - - struct il3945_shared *shared_data = il->_3945.shared_virt; - - shared_data->tx_base_ptr[txq_id] = cpu_to_le32((u32) txq->q.dma_addr); - - il_wr(il, FH39_CBCC_CTRL(txq_id), 0); - il_wr(il, FH39_CBCC_BASE(txq_id), 0); - - il_wr(il, FH39_TCSR_CONFIG(txq_id), - FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT | - FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF | - FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD | - FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL | - FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE); - - /* fake read to flush all prev. writes */ - _il_rd(il, FH39_TSSR_CBB_BASE); - - return 0; -} - -/* - * HCMD utils - */ -static u16 -il3945_get_hcmd_size(u8 cmd_id, u16 len) -{ - switch (cmd_id) { - case C_RXON: - return sizeof(struct il3945_rxon_cmd); - case C_POWER_TBL: - return sizeof(struct il3945_powertable_cmd); - default: - return len; - } -} - -static u16 -il3945_build_addsta_hcmd(const struct il_addsta_cmd *cmd, u8 * data) -{ - struct il3945_addsta_cmd *addsta = (struct il3945_addsta_cmd *)data; - addsta->mode = cmd->mode; - memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify)); - memcpy(&addsta->key, &cmd->key, sizeof(struct il4965_keyinfo)); - addsta->station_flags = cmd->station_flags; - addsta->station_flags_msk = cmd->station_flags_msk; - addsta->tid_disable_tx = cpu_to_le16(0); - addsta->rate_n_flags = cmd->rate_n_flags; - addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid; - addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid; - addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn; - - return (u16) sizeof(struct il3945_addsta_cmd); -} - -static int -il3945_add_bssid_station(struct il_priv *il, const u8 * addr, u8 * sta_id_r) -{ - int ret; - u8 sta_id; - unsigned long flags; - - if (sta_id_r) - *sta_id_r = IL_INVALID_STATION; - - ret = il_add_station_common(il, addr, 0, NULL, &sta_id); - if (ret) { - IL_ERR("Unable to add station %pM\n", addr); - return ret; - } - - if (sta_id_r) - *sta_id_r = sta_id; - - spin_lock_irqsave(&il->sta_lock, flags); - il->stations[sta_id].used |= IL_STA_LOCAL; - spin_unlock_irqrestore(&il->sta_lock, flags); - - return 0; -} - -static int -il3945_manage_ibss_station(struct il_priv *il, struct ieee80211_vif *vif, - bool add) -{ - struct il_vif_priv *vif_priv = (void *)vif->drv_priv; - int ret; - - if (add) { - ret = - il3945_add_bssid_station(il, vif->bss_conf.bssid, - &vif_priv->ibss_bssid_sta_id); - if (ret) - return ret; - - il3945_sync_sta(il, vif_priv->ibss_bssid_sta_id, - (il->band == - IEEE80211_BAND_5GHZ) ? RATE_6M_PLCP : - RATE_1M_PLCP); - il3945_rate_scale_init(il->hw, vif_priv->ibss_bssid_sta_id); - - return 0; - } - - return il_remove_station(il, vif_priv->ibss_bssid_sta_id, - vif->bss_conf.bssid); -} - -/** - * il3945_init_hw_rate_table - Initialize the hardware rate fallback table - */ -int -il3945_init_hw_rate_table(struct il_priv *il) -{ - int rc, i, idx, prev_idx; - struct il3945_rate_scaling_cmd rate_cmd = { - .reserved = {0, 0, 0}, - }; - struct il3945_rate_scaling_info *table = rate_cmd.table; - - for (i = 0; i < ARRAY_SIZE(il3945_rates); i++) { - idx = il3945_rates[i].table_rs_idx; - - table[idx].rate_n_flags = cpu_to_le16(il3945_rates[i].plcp); - table[idx].try_cnt = il->retry_rate; - prev_idx = il3945_get_prev_ieee_rate(i); - table[idx].next_rate_idx = il3945_rates[prev_idx].table_rs_idx; - } - - switch (il->band) { - case IEEE80211_BAND_5GHZ: - D_RATE("Select A mode rate scale\n"); - /* If one of the following CCK rates is used, - * have it fall back to the 6M OFDM rate */ - for (i = RATE_1M_IDX_TBL; i <= RATE_11M_IDX_TBL; i++) - table[i].next_rate_idx = - il3945_rates[IL_FIRST_OFDM_RATE].table_rs_idx; - - /* Don't fall back to CCK rates */ - table[RATE_12M_IDX_TBL].next_rate_idx = RATE_9M_IDX_TBL; - - /* Don't drop out of OFDM rates */ - table[RATE_6M_IDX_TBL].next_rate_idx = - il3945_rates[IL_FIRST_OFDM_RATE].table_rs_idx; - break; - - case IEEE80211_BAND_2GHZ: - D_RATE("Select B/G mode rate scale\n"); - /* If an OFDM rate is used, have it fall back to the - * 1M CCK rates */ - - if (!(il->_3945.sta_supp_rates & IL_OFDM_RATES_MASK) && - il_is_associated(il)) { - - idx = IL_FIRST_CCK_RATE; - for (i = RATE_6M_IDX_TBL; i <= RATE_54M_IDX_TBL; i++) - table[i].next_rate_idx = - il3945_rates[idx].table_rs_idx; - - idx = RATE_11M_IDX_TBL; - /* CCK shouldn't fall back to OFDM... */ - table[idx].next_rate_idx = RATE_5M_IDX_TBL; - } - break; - - default: - WARN_ON(1); - break; - } - - /* Update the rate scaling for control frame Tx */ - rate_cmd.table_id = 0; - rc = il_send_cmd_pdu(il, C_RATE_SCALE, sizeof(rate_cmd), &rate_cmd); - if (rc) - return rc; - - /* Update the rate scaling for data frame Tx */ - rate_cmd.table_id = 1; - return il_send_cmd_pdu(il, C_RATE_SCALE, sizeof(rate_cmd), &rate_cmd); -} - -/* Called when initializing driver */ -int -il3945_hw_set_hw_params(struct il_priv *il) -{ - memset((void *)&il->hw_params, 0, sizeof(struct il_hw_params)); - - il->_3945.shared_virt = - dma_alloc_coherent(&il->pci_dev->dev, sizeof(struct il3945_shared), - &il->_3945.shared_phys, GFP_KERNEL); - if (!il->_3945.shared_virt) - return -ENOMEM; - - il->hw_params.bcast_id = IL3945_BROADCAST_ID; - - /* Assign number of Usable TX queues */ - il->hw_params.max_txq_num = il->cfg->num_of_queues; - - il->hw_params.tfd_size = sizeof(struct il3945_tfd); - il->hw_params.rx_page_order = get_order(IL_RX_BUF_SIZE_3K); - il->hw_params.max_rxq_size = RX_QUEUE_SIZE; - il->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG; - il->hw_params.max_stations = IL3945_STATION_COUNT; - - il->sta_key_max_num = STA_KEY_MAX_NUM; - - il->hw_params.rx_wrt_ptr_reg = FH39_RSCSR_CHNL0_WPTR; - il->hw_params.max_beacon_itrvl = IL39_MAX_UCODE_BEACON_INTERVAL; - il->hw_params.beacon_time_tsf_bits = IL3945_EXT_BEACON_TIME_POS; - - return 0; -} - -unsigned int -il3945_hw_get_beacon_cmd(struct il_priv *il, struct il3945_frame *frame, - u8 rate) -{ - struct il3945_tx_beacon_cmd *tx_beacon_cmd; - unsigned int frame_size; - - tx_beacon_cmd = (struct il3945_tx_beacon_cmd *)&frame->u; - memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd)); - - tx_beacon_cmd->tx.sta_id = il->hw_params.bcast_id; - tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; - - frame_size = - il3945_fill_beacon_frame(il, tx_beacon_cmd->frame, - sizeof(frame->u) - sizeof(*tx_beacon_cmd)); - - BUG_ON(frame_size > MAX_MPDU_SIZE); - tx_beacon_cmd->tx.len = cpu_to_le16((u16) frame_size); - - tx_beacon_cmd->tx.rate = rate; - tx_beacon_cmd->tx.tx_flags = - (TX_CMD_FLG_SEQ_CTL_MSK | TX_CMD_FLG_TSF_MSK); - - /* supp_rates[0] == OFDM start at IL_FIRST_OFDM_RATE */ - tx_beacon_cmd->tx.supp_rates[0] = - (IL_OFDM_BASIC_RATES_MASK >> IL_FIRST_OFDM_RATE) & 0xFF; - - tx_beacon_cmd->tx.supp_rates[1] = (IL_CCK_BASIC_RATES_MASK & 0xF); - - return sizeof(struct il3945_tx_beacon_cmd) + frame_size; -} - -void -il3945_hw_handler_setup(struct il_priv *il) -{ - il->handlers[C_TX] = il3945_hdl_tx; - il->handlers[N_3945_RX] = il3945_hdl_rx; -} - -void -il3945_hw_setup_deferred_work(struct il_priv *il) -{ - INIT_DELAYED_WORK(&il->_3945.thermal_periodic, - il3945_bg_reg_txpower_periodic); -} - -void -il3945_hw_cancel_deferred_work(struct il_priv *il) -{ - cancel_delayed_work(&il->_3945.thermal_periodic); -} - -/* check contents of special bootstrap uCode SRAM */ -static int -il3945_verify_bsm(struct il_priv *il) -{ - __le32 *image = il->ucode_boot.v_addr; - u32 len = il->ucode_boot.len; - u32 reg; - u32 val; - - D_INFO("Begin verify bsm\n"); - - /* verify BSM SRAM contents */ - val = il_rd_prph(il, BSM_WR_DWCOUNT_REG); - for (reg = BSM_SRAM_LOWER_BOUND; reg < BSM_SRAM_LOWER_BOUND + len; - reg += sizeof(u32), image++) { - val = il_rd_prph(il, reg); - if (val != le32_to_cpu(*image)) { - IL_ERR("BSM uCode verification failed at " - "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n", - BSM_SRAM_LOWER_BOUND, reg - BSM_SRAM_LOWER_BOUND, - len, val, le32_to_cpu(*image)); - return -EIO; - } - } - - D_INFO("BSM bootstrap uCode image OK\n"); - - return 0; -} - -/****************************************************************************** - * - * EEPROM related functions - * - ******************************************************************************/ - -/* - * Clear the OWNER_MSK, to establish driver (instead of uCode running on - * embedded controller) as EEPROM reader; each read is a series of pulses - * to/from the EEPROM chip, not a single event, so even reads could conflict - * if they weren't arbitrated by some ownership mechanism. Here, the driver - * simply claims ownership, which should be safe when this function is called - * (i.e. before loading uCode!). - */ -static int -il3945_eeprom_acquire_semaphore(struct il_priv *il) -{ - _il_clear_bit(il, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK); - return 0; -} - -static void -il3945_eeprom_release_semaphore(struct il_priv *il) -{ - return; -} - - /** - * il3945_load_bsm - Load bootstrap instructions - * - * BSM operation: - * - * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program - * in special SRAM that does not power down during RFKILL. When powering back - * up after power-saving sleeps (or during initial uCode load), the BSM loads - * the bootstrap program into the on-board processor, and starts it. - * - * The bootstrap program loads (via DMA) instructions and data for a new - * program from host DRAM locations indicated by the host driver in the - * BSM_DRAM_* registers. Once the new program is loaded, it starts - * automatically. - * - * When initializing the NIC, the host driver points the BSM to the - * "initialize" uCode image. This uCode sets up some internal data, then - * notifies host via "initialize alive" that it is complete. - * - * The host then replaces the BSM_DRAM_* pointer values to point to the - * normal runtime uCode instructions and a backup uCode data cache buffer - * (filled initially with starting data values for the on-board processor), - * then triggers the "initialize" uCode to load and launch the runtime uCode, - * which begins normal operation. - * - * When doing a power-save shutdown, runtime uCode saves data SRAM into - * the backup data cache in DRAM before SRAM is powered down. - * - * When powering back up, the BSM loads the bootstrap program. This reloads - * the runtime uCode instructions and the backup data cache into SRAM, - * and re-launches the runtime uCode from where it left off. - */ -static int -il3945_load_bsm(struct il_priv *il) -{ - __le32 *image = il->ucode_boot.v_addr; - u32 len = il->ucode_boot.len; - dma_addr_t pinst; - dma_addr_t pdata; - u32 inst_len; - u32 data_len; - int rc; - int i; - u32 done; - u32 reg_offset; - - D_INFO("Begin load bsm\n"); - - /* make sure bootstrap program is no larger than BSM's SRAM size */ - if (len > IL39_MAX_BSM_SIZE) - return -EINVAL; - - /* Tell bootstrap uCode where to find the "Initialize" uCode - * in host DRAM ... host DRAM physical address bits 31:0 for 3945. - * NOTE: il3945_initialize_alive_start() will replace these values, - * after the "initialize" uCode has run, to point to - * runtime/protocol instructions and backup data cache. */ - pinst = il->ucode_init.p_addr; - pdata = il->ucode_init_data.p_addr; - inst_len = il->ucode_init.len; - data_len = il->ucode_init_data.len; - - il_wr_prph(il, BSM_DRAM_INST_PTR_REG, pinst); - il_wr_prph(il, BSM_DRAM_DATA_PTR_REG, pdata); - il_wr_prph(il, BSM_DRAM_INST_BYTECOUNT_REG, inst_len); - il_wr_prph(il, BSM_DRAM_DATA_BYTECOUNT_REG, data_len); - - /* Fill BSM memory with bootstrap instructions */ - for (reg_offset = BSM_SRAM_LOWER_BOUND; - reg_offset < BSM_SRAM_LOWER_BOUND + len; - reg_offset += sizeof(u32), image++) - _il_wr_prph(il, reg_offset, le32_to_cpu(*image)); - - rc = il3945_verify_bsm(il); - if (rc) - return rc; - - /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */ - il_wr_prph(il, BSM_WR_MEM_SRC_REG, 0x0); - il_wr_prph(il, BSM_WR_MEM_DST_REG, IL39_RTC_INST_LOWER_BOUND); - il_wr_prph(il, BSM_WR_DWCOUNT_REG, len / sizeof(u32)); - - /* Load bootstrap code into instruction SRAM now, - * to prepare to load "initialize" uCode */ - il_wr_prph(il, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START); - - /* Wait for load of bootstrap uCode to finish */ - for (i = 0; i < 100; i++) { - done = il_rd_prph(il, BSM_WR_CTRL_REG); - if (!(done & BSM_WR_CTRL_REG_BIT_START)) - break; - udelay(10); - } - if (i < 100) - D_INFO("BSM write complete, poll %d iterations\n", i); - else { - IL_ERR("BSM write did not complete!\n"); - return -EIO; - } - - /* Enable future boot loads whenever power management unit triggers it - * (e.g. when powering back up after power-save shutdown) */ - il_wr_prph(il, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START_EN); - - return 0; -} - -const struct il_ops il3945_ops = { - .txq_attach_buf_to_tfd = il3945_hw_txq_attach_buf_to_tfd, - .txq_free_tfd = il3945_hw_txq_free_tfd, - .txq_init = il3945_hw_tx_queue_init, - .load_ucode = il3945_load_bsm, - .dump_nic_error_log = il3945_dump_nic_error_log, - .apm_init = il3945_apm_init, - .send_tx_power = il3945_send_tx_power, - .is_valid_rtc_data_addr = il3945_hw_valid_rtc_data_addr, - .eeprom_acquire_semaphore = il3945_eeprom_acquire_semaphore, - .eeprom_release_semaphore = il3945_eeprom_release_semaphore, - - .rxon_assoc = il3945_send_rxon_assoc, - .commit_rxon = il3945_commit_rxon, - - .get_hcmd_size = il3945_get_hcmd_size, - .build_addsta_hcmd = il3945_build_addsta_hcmd, - .request_scan = il3945_request_scan, - .post_scan = il3945_post_scan, - - .post_associate = il3945_post_associate, - .config_ap = il3945_config_ap, - .manage_ibss_station = il3945_manage_ibss_station, - - .send_led_cmd = il3945_send_led_cmd, -}; - -static struct il_cfg il3945_bg_cfg = { - .name = "3945BG", - .fw_name_pre = IL3945_FW_PRE, - .ucode_api_max = IL3945_UCODE_API_MAX, - .ucode_api_min = IL3945_UCODE_API_MIN, - .sku = IL_SKU_G, - .eeprom_ver = EEPROM_3945_EEPROM_VERSION, - .mod_params = &il3945_mod_params, - .led_mode = IL_LED_BLINK, - - .eeprom_size = IL3945_EEPROM_IMG_SIZE, - .num_of_queues = IL39_NUM_QUEUES, - .pll_cfg_val = CSR39_ANA_PLL_CFG_VAL, - .set_l0s = false, - .use_bsm = true, - .led_compensation = 64, - .wd_timeout = IL_DEF_WD_TIMEOUT, - - .regulatory_bands = { - EEPROM_REGULATORY_BAND_1_CHANNELS, - EEPROM_REGULATORY_BAND_2_CHANNELS, - EEPROM_REGULATORY_BAND_3_CHANNELS, - EEPROM_REGULATORY_BAND_4_CHANNELS, - EEPROM_REGULATORY_BAND_5_CHANNELS, - EEPROM_REGULATORY_BAND_NO_HT40, - EEPROM_REGULATORY_BAND_NO_HT40, - }, -}; - -static struct il_cfg il3945_abg_cfg = { - .name = "3945ABG", - .fw_name_pre = IL3945_FW_PRE, - .ucode_api_max = IL3945_UCODE_API_MAX, - .ucode_api_min = IL3945_UCODE_API_MIN, - .sku = IL_SKU_A | IL_SKU_G, - .eeprom_ver = EEPROM_3945_EEPROM_VERSION, - .mod_params = &il3945_mod_params, - .led_mode = IL_LED_BLINK, - - .eeprom_size = IL3945_EEPROM_IMG_SIZE, - .num_of_queues = IL39_NUM_QUEUES, - .pll_cfg_val = CSR39_ANA_PLL_CFG_VAL, - .set_l0s = false, - .use_bsm = true, - .led_compensation = 64, - .wd_timeout = IL_DEF_WD_TIMEOUT, - - .regulatory_bands = { - EEPROM_REGULATORY_BAND_1_CHANNELS, - EEPROM_REGULATORY_BAND_2_CHANNELS, - EEPROM_REGULATORY_BAND_3_CHANNELS, - EEPROM_REGULATORY_BAND_4_CHANNELS, - EEPROM_REGULATORY_BAND_5_CHANNELS, - EEPROM_REGULATORY_BAND_NO_HT40, - EEPROM_REGULATORY_BAND_NO_HT40, - }, -}; - -const struct pci_device_id il3945_hw_card_ids[] = { - {IL_PCI_DEVICE(0x4222, 0x1005, il3945_bg_cfg)}, - {IL_PCI_DEVICE(0x4222, 0x1034, il3945_bg_cfg)}, - {IL_PCI_DEVICE(0x4222, 0x1044, il3945_bg_cfg)}, - {IL_PCI_DEVICE(0x4227, 0x1014, il3945_bg_cfg)}, - {IL_PCI_DEVICE(0x4222, PCI_ANY_ID, il3945_abg_cfg)}, - {IL_PCI_DEVICE(0x4227, PCI_ANY_ID, il3945_abg_cfg)}, - {0} -}; - -MODULE_DEVICE_TABLE(pci, il3945_hw_card_ids); diff --git a/drivers/net/wireless/iwlegacy/3945.h b/drivers/net/wireless/iwlegacy/3945.h deleted file mode 100644 index 00030d43a194..000000000000 --- a/drivers/net/wireless/iwlegacy/3945.h +++ /dev/null @@ -1,593 +0,0 @@ -/****************************************************************************** - * - * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA - * - * The full GNU General Public License is included in this distribution in the - * file called LICENSE. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - *****************************************************************************/ - -#ifndef __il_3945_h__ -#define __il_3945_h__ - -#include <linux/pci.h> /* for struct pci_device_id */ -#include <linux/kernel.h> -#include <net/ieee80211_radiotap.h> - -/* Hardware specific file defines the PCI IDs table for that hardware module */ -extern const struct pci_device_id il3945_hw_card_ids[]; - -#include "common.h" - -extern const struct il_ops il3945_ops; - -/* Highest firmware API version supported */ -#define IL3945_UCODE_API_MAX 2 - -/* Lowest firmware API version supported */ -#define IL3945_UCODE_API_MIN 1 - -#define IL3945_FW_PRE "iwlwifi-3945-" -#define _IL3945_MODULE_FIRMWARE(api) IL3945_FW_PRE #api ".ucode" -#define IL3945_MODULE_FIRMWARE(api) _IL3945_MODULE_FIRMWARE(api) - -/* Default noise level to report when noise measurement is not available. - * This may be because we're: - * 1) Not associated (4965, no beacon stats being sent to driver) - * 2) Scanning (noise measurement does not apply to associated channel) - * 3) Receiving CCK (3945 delivers noise info only for OFDM frames) - * Use default noise value of -127 ... this is below the range of measurable - * Rx dBm for either 3945 or 4965, so it can indicate "unmeasurable" to user. - * Also, -127 works better than 0 when averaging frames with/without - * noise info (e.g. averaging might be done in app); measured dBm values are - * always negative ... using a negative value as the default keeps all - * averages within an s8's (used in some apps) range of negative values. */ -#define IL_NOISE_MEAS_NOT_AVAILABLE (-127) - -/* Module parameters accessible from iwl-*.c */ -extern struct il_mod_params il3945_mod_params; - -struct il3945_rate_scale_data { - u64 data; - s32 success_counter; - s32 success_ratio; - s32 counter; - s32 average_tpt; - unsigned long stamp; -}; - -struct il3945_rs_sta { - spinlock_t lock; - struct il_priv *il; - s32 *expected_tpt; - unsigned long last_partial_flush; - unsigned long last_flush; - u32 flush_time; - u32 last_tx_packets; - u32 tx_packets; - u8 tgg; - u8 flush_pending; - u8 start_rate; - struct timer_list rate_scale_flush; - struct il3945_rate_scale_data win[RATE_COUNT_3945]; -#ifdef CONFIG_MAC80211_DEBUGFS - struct dentry *rs_sta_dbgfs_stats_table_file; -#endif - - /* used to be in sta_info */ - int last_txrate_idx; -}; - -/* - * The common struct MUST be first because it is shared between - * 3945 and 4965! - */ -struct il3945_sta_priv { - struct il_station_priv_common common; - struct il3945_rs_sta rs_sta; -}; - -enum il3945_antenna { - IL_ANTENNA_DIVERSITY, - IL_ANTENNA_MAIN, - IL_ANTENNA_AUX -}; - -/* - * RTS threshold here is total size [2347] minus 4 FCS bytes - * Per spec: - * a value of 0 means RTS on all data/management packets - * a value > max MSDU size means no RTS - * else RTS for data/management frames where MPDU is larger - * than RTS value. - */ -#define DEFAULT_RTS_THRESHOLD 2347U -#define MIN_RTS_THRESHOLD 0U -#define MAX_RTS_THRESHOLD 2347U -#define MAX_MSDU_SIZE 2304U -#define MAX_MPDU_SIZE 2346U -#define DEFAULT_BEACON_INTERVAL 100U -#define DEFAULT_SHORT_RETRY_LIMIT 7U -#define DEFAULT_LONG_RETRY_LIMIT 4U - -#define IL_TX_FIFO_AC0 0 -#define IL_TX_FIFO_AC1 1 -#define IL_TX_FIFO_AC2 2 -#define IL_TX_FIFO_AC3 3 -#define IL_TX_FIFO_HCCA_1 5 -#define IL_TX_FIFO_HCCA_2 6 -#define IL_TX_FIFO_NONE 7 - -#define IEEE80211_DATA_LEN 2304 -#define IEEE80211_4ADDR_LEN 30 -#define IEEE80211_HLEN (IEEE80211_4ADDR_LEN) -#define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN) - -struct il3945_frame { - union { - struct ieee80211_hdr frame; - struct il3945_tx_beacon_cmd beacon; - u8 raw[IEEE80211_FRAME_LEN]; - u8 cmd[360]; - } u; - struct list_head list; -}; - -#define SUP_RATE_11A_MAX_NUM_CHANNELS 8 -#define SUP_RATE_11B_MAX_NUM_CHANNELS 4 -#define SUP_RATE_11G_MAX_NUM_CHANNELS 12 - -#define IL_SUPPORTED_RATES_IE_LEN 8 - -#define SCAN_INTERVAL 100 - -#define MAX_TID_COUNT 9 - -#define IL_INVALID_RATE 0xFF -#define IL_INVALID_VALUE -1 - -#define STA_PS_STATUS_WAKE 0 -#define STA_PS_STATUS_SLEEP 1 - -struct il3945_ibss_seq { - u8 mac[ETH_ALEN]; - u16 seq_num; - u16 frag_num; - unsigned long packet_time; - struct list_head list; -}; - -#define IL_RX_HDR(x) ((struct il3945_rx_frame_hdr *)(\ - x->u.rx_frame.stats.payload + \ - x->u.rx_frame.stats.phy_count)) -#define IL_RX_END(x) ((struct il3945_rx_frame_end *)(\ - IL_RX_HDR(x)->payload + \ - le16_to_cpu(IL_RX_HDR(x)->len))) -#define IL_RX_STATS(x) (&x->u.rx_frame.stats) -#define IL_RX_DATA(x) (IL_RX_HDR(x)->payload) - -/****************************************************************************** - * - * Functions implemented in iwl3945-base.c which are forward declared here - * for use by iwl-*.c - * - *****************************************************************************/ -int il3945_calc_db_from_ratio(int sig_ratio); -void il3945_rx_replenish(void *data); -void il3945_rx_queue_reset(struct il_priv *il, struct il_rx_queue *rxq); -unsigned int il3945_fill_beacon_frame(struct il_priv *il, - struct ieee80211_hdr *hdr, int left); -int il3945_dump_nic_event_log(struct il_priv *il, bool full_log, char **buf, - bool display); -void il3945_dump_nic_error_log(struct il_priv *il); - -/****************************************************************************** - * - * Functions implemented in iwl-[34]*.c which are forward declared here - * for use by iwl3945-base.c - * - * NOTE: The implementation of these functions are hardware specific - * which is why they are in the hardware specific files (vs. iwl-base.c) - * - * Naming convention -- - * il3945_ <-- Its part of iwlwifi (should be changed to il3945_) - * il3945_hw_ <-- Hardware specific (implemented in iwl-XXXX.c by all HW) - * iwlXXXX_ <-- Hardware specific (implemented in iwl-XXXX.c for XXXX) - * il3945_bg_ <-- Called from work queue context - * il3945_mac_ <-- mac80211 callback - * - ****************************************************************************/ -void il3945_hw_handler_setup(struct il_priv *il); -void il3945_hw_setup_deferred_work(struct il_priv *il); -void il3945_hw_cancel_deferred_work(struct il_priv *il); -int il3945_hw_rxq_stop(struct il_priv *il); -int il3945_hw_set_hw_params(struct il_priv *il); -int il3945_hw_nic_init(struct il_priv *il); -int il3945_hw_nic_stop_master(struct il_priv *il); -void il3945_hw_txq_ctx_free(struct il_priv *il); -void il3945_hw_txq_ctx_stop(struct il_priv *il); -int il3945_hw_nic_reset(struct il_priv *il); -int il3945_hw_txq_attach_buf_to_tfd(struct il_priv *il, struct il_tx_queue *txq, - dma_addr_t addr, u16 len, u8 reset, u8 pad); -void il3945_hw_txq_free_tfd(struct il_priv *il, struct il_tx_queue *txq); -int il3945_hw_get_temperature(struct il_priv *il); -int il3945_hw_tx_queue_init(struct il_priv *il, struct il_tx_queue *txq); -unsigned int il3945_hw_get_beacon_cmd(struct il_priv *il, - struct il3945_frame *frame, u8 rate); -void il3945_hw_build_tx_cmd_rate(struct il_priv *il, struct il_device_cmd *cmd, - struct ieee80211_tx_info *info, - struct ieee80211_hdr *hdr, int sta_id); -int il3945_hw_reg_send_txpower(struct il_priv *il); -int il3945_hw_reg_set_txpower(struct il_priv *il, s8 power); -void il3945_hdl_stats(struct il_priv *il, struct il_rx_buf *rxb); -void il3945_hdl_c_stats(struct il_priv *il, struct il_rx_buf *rxb); -void il3945_disable_events(struct il_priv *il); -int il4965_get_temperature(const struct il_priv *il); -void il3945_post_associate(struct il_priv *il); -void il3945_config_ap(struct il_priv *il); - -int il3945_commit_rxon(struct il_priv *il); - -/** - * il3945_hw_find_station - Find station id for a given BSSID - * @bssid: MAC address of station ID to find - * - * NOTE: This should not be hardware specific but the code has - * not yet been merged into a single common layer for managing the - * station tables. - */ -u8 il3945_hw_find_station(struct il_priv *il, const u8 *bssid); - -__le32 il3945_get_antenna_flags(const struct il_priv *il); -int il3945_init_hw_rate_table(struct il_priv *il); -void il3945_reg_txpower_periodic(struct il_priv *il); -int il3945_txpower_set_from_eeprom(struct il_priv *il); - -int il3945_rs_next_rate(struct il_priv *il, int rate); - -/* scanning */ -int il3945_request_scan(struct il_priv *il, struct ieee80211_vif *vif); -void il3945_post_scan(struct il_priv *il); - -/* rates */ -extern const struct il3945_rate_info il3945_rates[RATE_COUNT_3945]; - -/* RSSI to dBm */ -#define IL39_RSSI_OFFSET 95 - -/* - * EEPROM related constants, enums, and structures. - */ -#define EEPROM_SKU_CAP_OP_MODE_MRC (1 << 7) - -/* - * Mapping of a Tx power level, at factory calibration temperature, - * to a radio/DSP gain table idx. - * One for each of 5 "sample" power levels in each band. - * v_det is measured at the factory, using the 3945's built-in power amplifier - * (PA) output voltage detector. This same detector is used during Tx of - * long packets in normal operation to provide feedback as to proper output - * level. - * Data copied from EEPROM. - * DO NOT ALTER THIS STRUCTURE!!! - */ -struct il3945_eeprom_txpower_sample { - u8 gain_idx; /* idx into power (gain) setup table ... */ - s8 power; /* ... for this pwr level for this chnl group */ - u16 v_det; /* PA output voltage */ -} __packed; - -/* - * Mappings of Tx power levels -> nominal radio/DSP gain table idxes. - * One for each channel group (a.k.a. "band") (1 for BG, 4 for A). - * Tx power setup code interpolates between the 5 "sample" power levels - * to determine the nominal setup for a requested power level. - * Data copied from EEPROM. - * DO NOT ALTER THIS STRUCTURE!!! - */ -struct il3945_eeprom_txpower_group { - struct il3945_eeprom_txpower_sample samples[5]; /* 5 power levels */ - s32 a, b, c, d, e; /* coefficients for voltage->power - * formula (signed) */ - s32 Fa, Fb, Fc, Fd, Fe; /* these modify coeffs based on - * frequency (signed) */ - s8 saturation_power; /* highest power possible by h/w in this - * band */ - u8 group_channel; /* "representative" channel # in this band */ - s16 temperature; /* h/w temperature at factory calib this band - * (signed) */ -} __packed; - -/* - * Temperature-based Tx-power compensation data, not band-specific. - * These coefficients are use to modify a/b/c/d/e coeffs based on - * difference between current temperature and factory calib temperature. - * Data copied from EEPROM. - */ -struct il3945_eeprom_temperature_corr { - u32 Ta; - u32 Tb; - u32 Tc; - u32 Td; - u32 Te; -} __packed; - -/* - * EEPROM map - */ -struct il3945_eeprom { - u8 reserved0[16]; - u16 device_id; /* abs.ofs: 16 */ - u8 reserved1[2]; - u16 pmc; /* abs.ofs: 20 */ - u8 reserved2[20]; - u8 mac_address[6]; /* abs.ofs: 42 */ - u8 reserved3[58]; - u16 board_revision; /* abs.ofs: 106 */ - u8 reserved4[11]; - u8 board_pba_number[9]; /* abs.ofs: 119 */ - u8 reserved5[8]; - u16 version; /* abs.ofs: 136 */ - u8 sku_cap; /* abs.ofs: 138 */ - u8 leds_mode; /* abs.ofs: 139 */ - u16 oem_mode; - u16 wowlan_mode; /* abs.ofs: 142 */ - u16 leds_time_interval; /* abs.ofs: 144 */ - u8 leds_off_time; /* abs.ofs: 146 */ - u8 leds_on_time; /* abs.ofs: 147 */ - u8 almgor_m_version; /* abs.ofs: 148 */ - u8 antenna_switch_type; /* abs.ofs: 149 */ - u8 reserved6[42]; - u8 sku_id[4]; /* abs.ofs: 192 */ - -/* - * Per-channel regulatory data. - * - * Each channel that *might* be supported by 3945 has a fixed location - * in EEPROM containing EEPROM_CHANNEL_* usage flags (LSB) and max regulatory - * txpower (MSB). - * - * Entries immediately below are for 20 MHz channel width. - * - * 2.4 GHz channels 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 - */ - u16 band_1_count; /* abs.ofs: 196 */ - struct il_eeprom_channel band_1_channels[14]; /* abs.ofs: 198 */ - -/* - * 4.9 GHz channels 183, 184, 185, 187, 188, 189, 192, 196, - * 5.0 GHz channels 7, 8, 11, 12, 16 - * (4915-5080MHz) (none of these is ever supported) - */ - u16 band_2_count; /* abs.ofs: 226 */ - struct il_eeprom_channel band_2_channels[13]; /* abs.ofs: 228 */ - -/* - * 5.2 GHz channels 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64 - * (5170-5320MHz) - */ - u16 band_3_count; /* abs.ofs: 254 */ - struct il_eeprom_channel band_3_channels[12]; /* abs.ofs: 256 */ - -/* - * 5.5 GHz channels 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 - * (5500-5700MHz) - */ - u16 band_4_count; /* abs.ofs: 280 */ - struct il_eeprom_channel band_4_channels[11]; /* abs.ofs: 282 */ - -/* - * 5.7 GHz channels 145, 149, 153, 157, 161, 165 - * (5725-5825MHz) - */ - u16 band_5_count; /* abs.ofs: 304 */ - struct il_eeprom_channel band_5_channels[6]; /* abs.ofs: 306 */ - - u8 reserved9[194]; - -/* - * 3945 Txpower calibration data. - */ -#define IL_NUM_TX_CALIB_GROUPS 5 - struct il3945_eeprom_txpower_group groups[IL_NUM_TX_CALIB_GROUPS]; -/* abs.ofs: 512 */ - struct il3945_eeprom_temperature_corr corrections; /* abs.ofs: 832 */ - u8 reserved16[172]; /* fill out to full 1024 byte block */ -} __packed; - -#define IL3945_EEPROM_IMG_SIZE 1024 - -/* End of EEPROM */ - -#define PCI_CFG_REV_ID_BIT_BASIC_SKU (0x40) /* bit 6 */ -#define PCI_CFG_REV_ID_BIT_RTP (0x80) /* bit 7 */ - -/* 4 DATA + 1 CMD. There are 2 HCCA queues that are not used. */ -#define IL39_NUM_QUEUES 5 -#define IL39_CMD_QUEUE_NUM 4 - -#define IL_DEFAULT_TX_RETRY 15 - -/*********************************************/ - -#define RFD_SIZE 4 -#define NUM_TFD_CHUNKS 4 - -#define TFD_CTL_COUNT_SET(n) (n << 24) -#define TFD_CTL_COUNT_GET(ctl) ((ctl >> 24) & 7) -#define TFD_CTL_PAD_SET(n) (n << 28) -#define TFD_CTL_PAD_GET(ctl) (ctl >> 28) - -/* Sizes and addresses for instruction and data memory (SRAM) in - * 3945's embedded processor. Driver access is via HBUS_TARG_MEM_* regs. */ -#define IL39_RTC_INST_LOWER_BOUND (0x000000) -#define IL39_RTC_INST_UPPER_BOUND (0x014000) - -#define IL39_RTC_DATA_LOWER_BOUND (0x800000) -#define IL39_RTC_DATA_UPPER_BOUND (0x808000) - -#define IL39_RTC_INST_SIZE (IL39_RTC_INST_UPPER_BOUND - \ - IL39_RTC_INST_LOWER_BOUND) -#define IL39_RTC_DATA_SIZE (IL39_RTC_DATA_UPPER_BOUND - \ - IL39_RTC_DATA_LOWER_BOUND) - -#define IL39_MAX_INST_SIZE IL39_RTC_INST_SIZE -#define IL39_MAX_DATA_SIZE IL39_RTC_DATA_SIZE - -/* Size of uCode instruction memory in bootstrap state machine */ -#define IL39_MAX_BSM_SIZE IL39_RTC_INST_SIZE - -static inline int -il3945_hw_valid_rtc_data_addr(u32 addr) -{ - return (addr >= IL39_RTC_DATA_LOWER_BOUND && - addr < IL39_RTC_DATA_UPPER_BOUND); -} - -/* Base physical address of il3945_shared is provided to FH39_TSSR_CBB_BASE - * and &il3945_shared.rx_read_ptr[0] is provided to FH39_RCSR_RPTR_ADDR(0) */ -struct il3945_shared { - __le32 tx_base_ptr[8]; -} __packed; - -/************************************/ -/* iwl3945 Flow Handler Definitions */ -/************************************/ - -/** - * This I/O area is directly read/writable by driver (e.g. Linux uses writel()) - * Addresses are offsets from device's PCI hardware base address. - */ -#define FH39_MEM_LOWER_BOUND (0x0800) -#define FH39_MEM_UPPER_BOUND (0x1000) - -#define FH39_CBCC_TBL (FH39_MEM_LOWER_BOUND + 0x140) -#define FH39_TFDB_TBL (FH39_MEM_LOWER_BOUND + 0x180) -#define FH39_RCSR_TBL (FH39_MEM_LOWER_BOUND + 0x400) -#define FH39_RSSR_TBL (FH39_MEM_LOWER_BOUND + 0x4c0) -#define FH39_TCSR_TBL (FH39_MEM_LOWER_BOUND + 0x500) -#define FH39_TSSR_TBL (FH39_MEM_LOWER_BOUND + 0x680) - -/* TFDB (Transmit Frame Buffer Descriptor) */ -#define FH39_TFDB(_ch, buf) (FH39_TFDB_TBL + \ - ((_ch) * 2 + (buf)) * 0x28) -#define FH39_TFDB_CHNL_BUF_CTRL_REG(_ch) (FH39_TFDB_TBL + 0x50 * (_ch)) - -/* CBCC channel is [0,2] */ -#define FH39_CBCC(_ch) (FH39_CBCC_TBL + (_ch) * 0x8) -#define FH39_CBCC_CTRL(_ch) (FH39_CBCC(_ch) + 0x00) -#define FH39_CBCC_BASE(_ch) (FH39_CBCC(_ch) + 0x04) - -/* RCSR channel is [0,2] */ -#define FH39_RCSR(_ch) (FH39_RCSR_TBL + (_ch) * 0x40) -#define FH39_RCSR_CONFIG(_ch) (FH39_RCSR(_ch) + 0x00) -#define FH39_RCSR_RBD_BASE(_ch) (FH39_RCSR(_ch) + 0x04) -#define FH39_RCSR_WPTR(_ch) (FH39_RCSR(_ch) + 0x20) -#define FH39_RCSR_RPTR_ADDR(_ch) (FH39_RCSR(_ch) + 0x24) - -#define FH39_RSCSR_CHNL0_WPTR (FH39_RCSR_WPTR(0)) - -/* RSSR */ -#define FH39_RSSR_CTRL (FH39_RSSR_TBL + 0x000) -#define FH39_RSSR_STATUS (FH39_RSSR_TBL + 0x004) - -/* TCSR */ -#define FH39_TCSR(_ch) (FH39_TCSR_TBL + (_ch) * 0x20) -#define FH39_TCSR_CONFIG(_ch) (FH39_TCSR(_ch) + 0x00) -#define FH39_TCSR_CREDIT(_ch) (FH39_TCSR(_ch) + 0x04) -#define FH39_TCSR_BUFF_STTS(_ch) (FH39_TCSR(_ch) + 0x08) - -/* TSSR */ -#define FH39_TSSR_CBB_BASE (FH39_TSSR_TBL + 0x000) -#define FH39_TSSR_MSG_CONFIG (FH39_TSSR_TBL + 0x008) -#define FH39_TSSR_TX_STATUS (FH39_TSSR_TBL + 0x010) - -/* DBM */ - -#define FH39_SRVC_CHNL (6) - -#define FH39_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE (20) -#define FH39_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH (4) - -#define FH39_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN (0x08000000) - -#define FH39_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE (0x80000000) - -#define FH39_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE (0x20000000) - -#define FH39_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128 (0x01000000) - -#define FH39_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST (0x00001000) - -#define FH39_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH (0x00000000) - -#define FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF (0x00000000) -#define FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_DRIVER (0x00000001) - -#define FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_DISABLE_VAL (0x00000000) -#define FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL (0x00000008) - -#define FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD (0x00200000) - -#define FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT (0x00000000) - -#define FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE (0x00000000) -#define FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE (0x80000000) - -#define FH39_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_VALID (0x00004000) - -#define FH39_TCSR_CHNL_TX_BUF_STS_REG_BIT_TFDB_WPTR (0x00000001) - -#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON (0xFF000000) -#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON (0x00FF0000) - -#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B (0x00000400) - -#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON (0x00000100) -#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON (0x00000080) - -#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH (0x00000020) -#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH (0x00000005) - -#define FH39_TSSR_TX_STATUS_REG_BIT_BUFS_EMPTY(_ch) (BIT(_ch) << 24) -#define FH39_TSSR_TX_STATUS_REG_BIT_NO_PEND_REQ(_ch) (BIT(_ch) << 16) - -#define FH39_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(_ch) \ - (FH39_TSSR_TX_STATUS_REG_BIT_BUFS_EMPTY(_ch) | \ - FH39_TSSR_TX_STATUS_REG_BIT_NO_PEND_REQ(_ch)) - -#define FH39_RSSR_CHNL0_RX_STATUS_CHNL_IDLE (0x01000000) - -struct il3945_tfd_tb { - __le32 addr; - __le32 len; -} __packed; - -struct il3945_tfd { - __le32 control_flags; - struct il3945_tfd_tb tbs[4]; - u8 __pad[28]; -} __packed; - -#ifdef CONFIG_IWLEGACY_DEBUGFS -extern const struct il_debugfs_ops il3945_debugfs_ops; -#endif - -#endif diff --git a/drivers/net/wireless/iwlegacy/4965-calib.c b/drivers/net/wireless/iwlegacy/4965-calib.c deleted file mode 100644 index e78bdefb8952..000000000000 --- a/drivers/net/wireless/iwlegacy/4965-calib.c +++ /dev/null @@ -1,934 +0,0 @@ -/****************************************************************************** - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, - * USA - * - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - * BSD LICENSE - * - * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - *****************************************************************************/ - -#include <linux/slab.h> -#include <net/mac80211.h> - -#include "common.h" -#include "4965.h" - -/***************************************************************************** - * INIT calibrations framework - *****************************************************************************/ - -struct stats_general_data { - u32 beacon_silence_rssi_a; - u32 beacon_silence_rssi_b; - u32 beacon_silence_rssi_c; - u32 beacon_energy_a; - u32 beacon_energy_b; - u32 beacon_energy_c; -}; - -/***************************************************************************** - * RUNTIME calibrations framework - *****************************************************************************/ - -/* "false alarms" are signals that our DSP tries to lock onto, - * but then determines that they are either noise, or transmissions - * from a distant wireless network (also "noise", really) that get - * "stepped on" by stronger transmissions within our own network. - * This algorithm attempts to set a sensitivity level that is high - * enough to receive all of our own network traffic, but not so - * high that our DSP gets too busy trying to lock onto non-network - * activity/noise. */ -static int -il4965_sens_energy_cck(struct il_priv *il, u32 norm_fa, u32 rx_enable_time, - struct stats_general_data *rx_info) -{ - u32 max_nrg_cck = 0; - int i = 0; - u8 max_silence_rssi = 0; - u32 silence_ref = 0; - u8 silence_rssi_a = 0; - u8 silence_rssi_b = 0; - u8 silence_rssi_c = 0; - u32 val; - - /* "false_alarms" values below are cross-multiplications to assess the - * numbers of false alarms within the measured period of actual Rx - * (Rx is off when we're txing), vs the min/max expected false alarms - * (some should be expected if rx is sensitive enough) in a - * hypothetical listening period of 200 time units (TU), 204.8 msec: - * - * MIN_FA/fixed-time < false_alarms/actual-rx-time < MAX_FA/beacon-time - * - * */ - u32 false_alarms = norm_fa * 200 * 1024; - u32 max_false_alarms = MAX_FA_CCK * rx_enable_time; - u32 min_false_alarms = MIN_FA_CCK * rx_enable_time; - struct il_sensitivity_data *data = NULL; - const struct il_sensitivity_ranges *ranges = il->hw_params.sens; - - data = &(il->sensitivity_data); - - data->nrg_auto_corr_silence_diff = 0; - - /* Find max silence rssi among all 3 receivers. - * This is background noise, which may include transmissions from other - * networks, measured during silence before our network's beacon */ - silence_rssi_a = - (u8) ((rx_info->beacon_silence_rssi_a & ALL_BAND_FILTER) >> 8); - silence_rssi_b = - (u8) ((rx_info->beacon_silence_rssi_b & ALL_BAND_FILTER) >> 8); - silence_rssi_c = - (u8) ((rx_info->beacon_silence_rssi_c & ALL_BAND_FILTER) >> 8); - - val = max(silence_rssi_b, silence_rssi_c); - max_silence_rssi = max(silence_rssi_a, (u8) val); - - /* Store silence rssi in 20-beacon history table */ - data->nrg_silence_rssi[data->nrg_silence_idx] = max_silence_rssi; - data->nrg_silence_idx++; - if (data->nrg_silence_idx >= NRG_NUM_PREV_STAT_L) - data->nrg_silence_idx = 0; - - /* Find max silence rssi across 20 beacon history */ - for (i = 0; i < NRG_NUM_PREV_STAT_L; i++) { - val = data->nrg_silence_rssi[i]; - silence_ref = max(silence_ref, val); - } - D_CALIB("silence a %u, b %u, c %u, 20-bcn max %u\n", silence_rssi_a, - silence_rssi_b, silence_rssi_c, silence_ref); - - /* Find max rx energy (min value!) among all 3 receivers, - * measured during beacon frame. - * Save it in 10-beacon history table. */ - i = data->nrg_energy_idx; - val = min(rx_info->beacon_energy_b, rx_info->beacon_energy_c); - data->nrg_value[i] = min(rx_info->beacon_energy_a, val); - - data->nrg_energy_idx++; - if (data->nrg_energy_idx >= 10) - data->nrg_energy_idx = 0; - - /* Find min rx energy (max value) across 10 beacon history. - * This is the minimum signal level that we want to receive well. - * Add backoff (margin so we don't miss slightly lower energy frames). - * This establishes an upper bound (min value) for energy threshold. */ - max_nrg_cck = data->nrg_value[0]; - for (i = 1; i < 10; i++) - max_nrg_cck = (u32) max(max_nrg_cck, (data->nrg_value[i])); - max_nrg_cck += 6; - - D_CALIB("rx energy a %u, b %u, c %u, 10-bcn max/min %u\n", - rx_info->beacon_energy_a, rx_info->beacon_energy_b, - rx_info->beacon_energy_c, max_nrg_cck - 6); - - /* Count number of consecutive beacons with fewer-than-desired - * false alarms. */ - if (false_alarms < min_false_alarms) - data->num_in_cck_no_fa++; - else - data->num_in_cck_no_fa = 0; - D_CALIB("consecutive bcns with few false alarms = %u\n", - data->num_in_cck_no_fa); - - /* If we got too many false alarms this time, reduce sensitivity */ - if (false_alarms > max_false_alarms && - data->auto_corr_cck > AUTO_CORR_MAX_TH_CCK) { - D_CALIB("norm FA %u > max FA %u\n", false_alarms, - max_false_alarms); - D_CALIB("... reducing sensitivity\n"); - data->nrg_curr_state = IL_FA_TOO_MANY; - /* Store for "fewer than desired" on later beacon */ - data->nrg_silence_ref = silence_ref; - - /* increase energy threshold (reduce nrg value) - * to decrease sensitivity */ - data->nrg_th_cck = data->nrg_th_cck - NRG_STEP_CCK; - /* Else if we got fewer than desired, increase sensitivity */ - } else if (false_alarms < min_false_alarms) { - data->nrg_curr_state = IL_FA_TOO_FEW; - - /* Compare silence level with silence level for most recent - * healthy number or too many false alarms */ - data->nrg_auto_corr_silence_diff = - (s32) data->nrg_silence_ref - (s32) silence_ref; - - D_CALIB("norm FA %u < min FA %u, silence diff %d\n", - false_alarms, min_false_alarms, - data->nrg_auto_corr_silence_diff); - - /* Increase value to increase sensitivity, but only if: - * 1a) previous beacon did *not* have *too many* false alarms - * 1b) AND there's a significant difference in Rx levels - * from a previous beacon with too many, or healthy # FAs - * OR 2) We've seen a lot of beacons (100) with too few - * false alarms */ - if (data->nrg_prev_state != IL_FA_TOO_MANY && - (data->nrg_auto_corr_silence_diff > NRG_DIFF || - data->num_in_cck_no_fa > MAX_NUMBER_CCK_NO_FA)) { - - D_CALIB("... increasing sensitivity\n"); - /* Increase nrg value to increase sensitivity */ - val = data->nrg_th_cck + NRG_STEP_CCK; - data->nrg_th_cck = min((u32) ranges->min_nrg_cck, val); - } else { - D_CALIB("... but not changing sensitivity\n"); - } - - /* Else we got a healthy number of false alarms, keep status quo */ - } else { - D_CALIB(" FA in safe zone\n"); - data->nrg_curr_state = IL_FA_GOOD_RANGE; - - /* Store for use in "fewer than desired" with later beacon */ - data->nrg_silence_ref = silence_ref; - - /* If previous beacon had too many false alarms, - * give it some extra margin by reducing sensitivity again - * (but don't go below measured energy of desired Rx) */ - if (IL_FA_TOO_MANY == data->nrg_prev_state) { - D_CALIB("... increasing margin\n"); - if (data->nrg_th_cck > (max_nrg_cck + NRG_MARGIN)) - data->nrg_th_cck -= NRG_MARGIN; - else - data->nrg_th_cck = max_nrg_cck; - } - } - - /* Make sure the energy threshold does not go above the measured - * energy of the desired Rx signals (reduced by backoff margin), - * or else we might start missing Rx frames. - * Lower value is higher energy, so we use max()! - */ - data->nrg_th_cck = max(max_nrg_cck, data->nrg_th_cck); - D_CALIB("new nrg_th_cck %u\n", data->nrg_th_cck); - - data->nrg_prev_state = data->nrg_curr_state; - - /* Auto-correlation CCK algorithm */ - if (false_alarms > min_false_alarms) { - - /* increase auto_corr values to decrease sensitivity - * so the DSP won't be disturbed by the noise - */ - if (data->auto_corr_cck < AUTO_CORR_MAX_TH_CCK) - data->auto_corr_cck = AUTO_CORR_MAX_TH_CCK + 1; - else { - val = data->auto_corr_cck + AUTO_CORR_STEP_CCK; - data->auto_corr_cck = - min((u32) ranges->auto_corr_max_cck, val); - } - val = data->auto_corr_cck_mrc + AUTO_CORR_STEP_CCK; - data->auto_corr_cck_mrc = - min((u32) ranges->auto_corr_max_cck_mrc, val); - } else if (false_alarms < min_false_alarms && - (data->nrg_auto_corr_silence_diff > NRG_DIFF || - data->num_in_cck_no_fa > MAX_NUMBER_CCK_NO_FA)) { - - /* Decrease auto_corr values to increase sensitivity */ - val = data->auto_corr_cck - AUTO_CORR_STEP_CCK; - data->auto_corr_cck = max((u32) ranges->auto_corr_min_cck, val); - val = data->auto_corr_cck_mrc - AUTO_CORR_STEP_CCK; - data->auto_corr_cck_mrc = - max((u32) ranges->auto_corr_min_cck_mrc, val); - } - - return 0; -} - -static int -il4965_sens_auto_corr_ofdm(struct il_priv *il, u32 norm_fa, u32 rx_enable_time) -{ - u32 val; - u32 false_alarms = norm_fa * 200 * 1024; - u32 max_false_alarms = MAX_FA_OFDM * rx_enable_time; - u32 min_false_alarms = MIN_FA_OFDM * rx_enable_time; - struct il_sensitivity_data *data = NULL; - const struct il_sensitivity_ranges *ranges = il->hw_params.sens; - - data = &(il->sensitivity_data); - - /* If we got too many false alarms this time, reduce sensitivity */ - if (false_alarms > max_false_alarms) { - - D_CALIB("norm FA %u > max FA %u)\n", false_alarms, - max_false_alarms); - - val = data->auto_corr_ofdm + AUTO_CORR_STEP_OFDM; - data->auto_corr_ofdm = - min((u32) ranges->auto_corr_max_ofdm, val); - - val = data->auto_corr_ofdm_mrc + AUTO_CORR_STEP_OFDM; - data->auto_corr_ofdm_mrc = - min((u32) ranges->auto_corr_max_ofdm_mrc, val); - - val = data->auto_corr_ofdm_x1 + AUTO_CORR_STEP_OFDM; - data->auto_corr_ofdm_x1 = - min((u32) ranges->auto_corr_max_ofdm_x1, val); - - val = data->auto_corr_ofdm_mrc_x1 + AUTO_CORR_STEP_OFDM; - data->auto_corr_ofdm_mrc_x1 = - min((u32) ranges->auto_corr_max_ofdm_mrc_x1, val); - } - - /* Else if we got fewer than desired, increase sensitivity */ - else if (false_alarms < min_false_alarms) { - - D_CALIB("norm FA %u < min FA %u\n", false_alarms, - min_false_alarms); - - val = data->auto_corr_ofdm - AUTO_CORR_STEP_OFDM; - data->auto_corr_ofdm = - max((u32) ranges->auto_corr_min_ofdm, val); - - val = data->auto_corr_ofdm_mrc - AUTO_CORR_STEP_OFDM; - data->auto_corr_ofdm_mrc = - max((u32) ranges->auto_corr_min_ofdm_mrc, val); - - val = data->auto_corr_ofdm_x1 - AUTO_CORR_STEP_OFDM; - data->auto_corr_ofdm_x1 = - max((u32) ranges->auto_corr_min_ofdm_x1, val); - - val = data->auto_corr_ofdm_mrc_x1 - AUTO_CORR_STEP_OFDM; - data->auto_corr_ofdm_mrc_x1 = - max((u32) ranges->auto_corr_min_ofdm_mrc_x1, val); - } else { - D_CALIB("min FA %u < norm FA %u < max FA %u OK\n", - min_false_alarms, false_alarms, max_false_alarms); - } - return 0; -} - -static void -il4965_prepare_legacy_sensitivity_tbl(struct il_priv *il, - struct il_sensitivity_data *data, - __le16 *tbl) -{ - tbl[HD_AUTO_CORR32_X4_TH_ADD_MIN_IDX] = - cpu_to_le16((u16) data->auto_corr_ofdm); - tbl[HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_IDX] = - cpu_to_le16((u16) data->auto_corr_ofdm_mrc); - tbl[HD_AUTO_CORR32_X1_TH_ADD_MIN_IDX] = - cpu_to_le16((u16) data->auto_corr_ofdm_x1); - tbl[HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_IDX] = - cpu_to_le16((u16) data->auto_corr_ofdm_mrc_x1); - - tbl[HD_AUTO_CORR40_X4_TH_ADD_MIN_IDX] = - cpu_to_le16((u16) data->auto_corr_cck); - tbl[HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_IDX] = - cpu_to_le16((u16) data->auto_corr_cck_mrc); - - tbl[HD_MIN_ENERGY_CCK_DET_IDX] = cpu_to_le16((u16) data->nrg_th_cck); - tbl[HD_MIN_ENERGY_OFDM_DET_IDX] = cpu_to_le16((u16) data->nrg_th_ofdm); - - tbl[HD_BARKER_CORR_TH_ADD_MIN_IDX] = - cpu_to_le16(data->barker_corr_th_min); - tbl[HD_BARKER_CORR_TH_ADD_MIN_MRC_IDX] = - cpu_to_le16(data->barker_corr_th_min_mrc); - tbl[HD_OFDM_ENERGY_TH_IN_IDX] = cpu_to_le16(data->nrg_th_cca); - - D_CALIB("ofdm: ac %u mrc %u x1 %u mrc_x1 %u thresh %u\n", - data->auto_corr_ofdm, data->auto_corr_ofdm_mrc, - data->auto_corr_ofdm_x1, data->auto_corr_ofdm_mrc_x1, - data->nrg_th_ofdm); - - D_CALIB("cck: ac %u mrc %u thresh %u\n", data->auto_corr_cck, - data->auto_corr_cck_mrc, data->nrg_th_cck); -} - -/* Prepare a C_SENSITIVITY, send to uCode if values have changed */ -static int -il4965_sensitivity_write(struct il_priv *il) -{ - struct il_sensitivity_cmd cmd; - struct il_sensitivity_data *data = NULL; - struct il_host_cmd cmd_out = { - .id = C_SENSITIVITY, - .len = sizeof(struct il_sensitivity_cmd), - .flags = CMD_ASYNC, - .data = &cmd, - }; - - data = &(il->sensitivity_data); - - memset(&cmd, 0, sizeof(cmd)); - - il4965_prepare_legacy_sensitivity_tbl(il, data, &cmd.table[0]); - - /* Update uCode's "work" table, and copy it to DSP */ - cmd.control = C_SENSITIVITY_CONTROL_WORK_TBL; - - /* Don't send command to uCode if nothing has changed */ - if (!memcmp - (&cmd.table[0], &(il->sensitivity_tbl[0]), - sizeof(u16) * HD_TBL_SIZE)) { - D_CALIB("No change in C_SENSITIVITY\n"); - return 0; - } - - /* Copy table for comparison next time */ - memcpy(&(il->sensitivity_tbl[0]), &(cmd.table[0]), - sizeof(u16) * HD_TBL_SIZE); - - return il_send_cmd(il, &cmd_out); -} - -void -il4965_init_sensitivity(struct il_priv *il) -{ - int ret = 0; - int i; - struct il_sensitivity_data *data = NULL; - const struct il_sensitivity_ranges *ranges = il->hw_params.sens; - - if (il->disable_sens_cal) - return; - - D_CALIB("Start il4965_init_sensitivity\n"); - - /* Clear driver's sensitivity algo data */ - data = &(il->sensitivity_data); - - if (ranges == NULL) - return; - - memset(data, 0, sizeof(struct il_sensitivity_data)); - - data->num_in_cck_no_fa = 0; - data->nrg_curr_state = IL_FA_TOO_MANY; - data->nrg_prev_state = IL_FA_TOO_MANY; - data->nrg_silence_ref = 0; - data->nrg_silence_idx = 0; - data->nrg_energy_idx = 0; - - for (i = 0; i < 10; i++) - data->nrg_value[i] = 0; - - for (i = 0; i < NRG_NUM_PREV_STAT_L; i++) - data->nrg_silence_rssi[i] = 0; - - data->auto_corr_ofdm = ranges->auto_corr_min_ofdm; - data->auto_corr_ofdm_mrc = ranges->auto_corr_min_ofdm_mrc; - data->auto_corr_ofdm_x1 = ranges->auto_corr_min_ofdm_x1; - data->auto_corr_ofdm_mrc_x1 = ranges->auto_corr_min_ofdm_mrc_x1; - data->auto_corr_cck = AUTO_CORR_CCK_MIN_VAL_DEF; - data->auto_corr_cck_mrc = ranges->auto_corr_min_cck_mrc; - data->nrg_th_cck = ranges->nrg_th_cck; - data->nrg_th_ofdm = ranges->nrg_th_ofdm; - data->barker_corr_th_min = ranges->barker_corr_th_min; - data->barker_corr_th_min_mrc = ranges->barker_corr_th_min_mrc; - data->nrg_th_cca = ranges->nrg_th_cca; - - data->last_bad_plcp_cnt_ofdm = 0; - data->last_fa_cnt_ofdm = 0; - data->last_bad_plcp_cnt_cck = 0; - data->last_fa_cnt_cck = 0; - - ret |= il4965_sensitivity_write(il); - D_CALIB("<<return 0x%X\n", ret); -} - -void -il4965_sensitivity_calibration(struct il_priv *il, void *resp) -{ - u32 rx_enable_time; - u32 fa_cck; - u32 fa_ofdm; - u32 bad_plcp_cck; - u32 bad_plcp_ofdm; - u32 norm_fa_ofdm; - u32 norm_fa_cck; - struct il_sensitivity_data *data = NULL; - struct stats_rx_non_phy *rx_info; - struct stats_rx_phy *ofdm, *cck; - unsigned long flags; - struct stats_general_data statis; - - if (il->disable_sens_cal) - return; - - data = &(il->sensitivity_data); - - if (!il_is_any_associated(il)) { - D_CALIB("<< - not associated\n"); - return; - } - - spin_lock_irqsave(&il->lock, flags); - - rx_info = &(((struct il_notif_stats *)resp)->rx.general); - ofdm = &(((struct il_notif_stats *)resp)->rx.ofdm); - cck = &(((struct il_notif_stats *)resp)->rx.cck); - - if (rx_info->interference_data_flag != INTERFERENCE_DATA_AVAILABLE) { - D_CALIB("<< invalid data.\n"); - spin_unlock_irqrestore(&il->lock, flags); - return; - } - - /* Extract Statistics: */ - rx_enable_time = le32_to_cpu(rx_info->channel_load); - fa_cck = le32_to_cpu(cck->false_alarm_cnt); - fa_ofdm = le32_to_cpu(ofdm->false_alarm_cnt); - bad_plcp_cck = le32_to_cpu(cck->plcp_err); - bad_plcp_ofdm = le32_to_cpu(ofdm->plcp_err); - - statis.beacon_silence_rssi_a = - le32_to_cpu(rx_info->beacon_silence_rssi_a); - statis.beacon_silence_rssi_b = - le32_to_cpu(rx_info->beacon_silence_rssi_b); - statis.beacon_silence_rssi_c = - le32_to_cpu(rx_info->beacon_silence_rssi_c); - statis.beacon_energy_a = le32_to_cpu(rx_info->beacon_energy_a); - statis.beacon_energy_b = le32_to_cpu(rx_info->beacon_energy_b); - statis.beacon_energy_c = le32_to_cpu(rx_info->beacon_energy_c); - - spin_unlock_irqrestore(&il->lock, flags); - - D_CALIB("rx_enable_time = %u usecs\n", rx_enable_time); - - if (!rx_enable_time) { - D_CALIB("<< RX Enable Time == 0!\n"); - return; - } - - /* These stats increase monotonically, and do not reset - * at each beacon. Calculate difference from last value, or just - * use the new stats value if it has reset or wrapped around. */ - if (data->last_bad_plcp_cnt_cck > bad_plcp_cck) - data->last_bad_plcp_cnt_cck = bad_plcp_cck; - else { - bad_plcp_cck -= data->last_bad_plcp_cnt_cck; - data->last_bad_plcp_cnt_cck += bad_plcp_cck; - } - - if (data->last_bad_plcp_cnt_ofdm > bad_plcp_ofdm) - data->last_bad_plcp_cnt_ofdm = bad_plcp_ofdm; - else { - bad_plcp_ofdm -= data->last_bad_plcp_cnt_ofdm; - data->last_bad_plcp_cnt_ofdm += bad_plcp_ofdm; - } - - if (data->last_fa_cnt_ofdm > fa_ofdm) - data->last_fa_cnt_ofdm = fa_ofdm; - else { - fa_ofdm -= data->last_fa_cnt_ofdm; - data->last_fa_cnt_ofdm += fa_ofdm; - } - - if (data->last_fa_cnt_cck > fa_cck) - data->last_fa_cnt_cck = fa_cck; - else { - fa_cck -= data->last_fa_cnt_cck; - data->last_fa_cnt_cck += fa_cck; - } - - /* Total aborted signal locks */ - norm_fa_ofdm = fa_ofdm + bad_plcp_ofdm; - norm_fa_cck = fa_cck + bad_plcp_cck; - - D_CALIB("cck: fa %u badp %u ofdm: fa %u badp %u\n", fa_cck, - bad_plcp_cck, fa_ofdm, bad_plcp_ofdm); - - il4965_sens_auto_corr_ofdm(il, norm_fa_ofdm, rx_enable_time); - il4965_sens_energy_cck(il, norm_fa_cck, rx_enable_time, &statis); - - il4965_sensitivity_write(il); -} - -static inline u8 -il4965_find_first_chain(u8 mask) -{ - if (mask & ANT_A) - return CHAIN_A; - if (mask & ANT_B) - return CHAIN_B; - return CHAIN_C; -} - -/** - * Run disconnected antenna algorithm to find out which antennas are - * disconnected. - */ -static void -il4965_find_disconn_antenna(struct il_priv *il, u32 * average_sig, - struct il_chain_noise_data *data) -{ - u32 active_chains = 0; - u32 max_average_sig; - u16 max_average_sig_antenna_i; - u8 num_tx_chains; - u8 first_chain; - u16 i = 0; - - average_sig[0] = - data->chain_signal_a / - il->cfg->chain_noise_num_beacons; - average_sig[1] = - data->chain_signal_b / - il->cfg->chain_noise_num_beacons; - average_sig[2] = - data->chain_signal_c / - il->cfg->chain_noise_num_beacons; - - if (average_sig[0] >= average_sig[1]) { - max_average_sig = average_sig[0]; - max_average_sig_antenna_i = 0; - active_chains = (1 << max_average_sig_antenna_i); - } else { - max_average_sig = average_sig[1]; - max_average_sig_antenna_i = 1; - active_chains = (1 << max_average_sig_antenna_i); - } - - if (average_sig[2] >= max_average_sig) { - max_average_sig = average_sig[2]; - max_average_sig_antenna_i = 2; - active_chains = (1 << max_average_sig_antenna_i); - } - - D_CALIB("average_sig: a %d b %d c %d\n", average_sig[0], average_sig[1], - average_sig[2]); - D_CALIB("max_average_sig = %d, antenna %d\n", max_average_sig, - max_average_sig_antenna_i); - - /* Compare signal strengths for all 3 receivers. */ - for (i = 0; i < NUM_RX_CHAINS; i++) { - if (i != max_average_sig_antenna_i) { - s32 rssi_delta = (max_average_sig - average_sig[i]); - - /* If signal is very weak, compared with - * strongest, mark it as disconnected. */ - if (rssi_delta > MAXIMUM_ALLOWED_PATHLOSS) - data->disconn_array[i] = 1; - else - active_chains |= (1 << i); - D_CALIB("i = %d rssiDelta = %d " - "disconn_array[i] = %d\n", i, rssi_delta, - data->disconn_array[i]); - } - } - - /* - * The above algorithm sometimes fails when the ucode - * reports 0 for all chains. It's not clear why that - * happens to start with, but it is then causing trouble - * because this can make us enable more chains than the - * hardware really has. - * - * To be safe, simply mask out any chains that we know - * are not on the device. - */ - active_chains &= il->hw_params.valid_rx_ant; - - num_tx_chains = 0; - for (i = 0; i < NUM_RX_CHAINS; i++) { - /* loops on all the bits of - * il->hw_setting.valid_tx_ant */ - u8 ant_msk = (1 << i); - if (!(il->hw_params.valid_tx_ant & ant_msk)) - continue; - - num_tx_chains++; - if (data->disconn_array[i] == 0) - /* there is a Tx antenna connected */ - break; - if (num_tx_chains == il->hw_params.tx_chains_num && - data->disconn_array[i]) { - /* - * If all chains are disconnected - * connect the first valid tx chain - */ - first_chain = - il4965_find_first_chain(il->cfg->valid_tx_ant); - data->disconn_array[first_chain] = 0; - active_chains |= BIT(first_chain); - D_CALIB("All Tx chains are disconnected" - "- declare %d as connected\n", first_chain); - break; - } - } - - if (active_chains != il->hw_params.valid_rx_ant && - active_chains != il->chain_noise_data.active_chains) - D_CALIB("Detected that not all antennas are connected! " - "Connected: %#x, valid: %#x.\n", active_chains, - il->hw_params.valid_rx_ant); - - /* Save for use within RXON, TX, SCAN commands, etc. */ - data->active_chains = active_chains; - D_CALIB("active_chains (bitwise) = 0x%x\n", active_chains); -} - -static void -il4965_gain_computation(struct il_priv *il, u32 * average_noise, - u16 min_average_noise_antenna_i, u32 min_average_noise, - u8 default_chain) -{ - int i, ret; - struct il_chain_noise_data *data = &il->chain_noise_data; - - data->delta_gain_code[min_average_noise_antenna_i] = 0; - - for (i = default_chain; i < NUM_RX_CHAINS; i++) { - s32 delta_g = 0; - - if (!data->disconn_array[i] && - data->delta_gain_code[i] == - CHAIN_NOISE_DELTA_GAIN_INIT_VAL) { - delta_g = average_noise[i] - min_average_noise; - data->delta_gain_code[i] = (u8) ((delta_g * 10) / 15); - data->delta_gain_code[i] = - min(data->delta_gain_code[i], - (u8) CHAIN_NOISE_MAX_DELTA_GAIN_CODE); - - data->delta_gain_code[i] = - (data->delta_gain_code[i] | (1 << 2)); - } else { - data->delta_gain_code[i] = 0; - } - } - D_CALIB("delta_gain_codes: a %d b %d c %d\n", data->delta_gain_code[0], - data->delta_gain_code[1], data->delta_gain_code[2]); - - /* Differential gain gets sent to uCode only once */ - if (!data->radio_write) { - struct il_calib_diff_gain_cmd cmd; - data->radio_write = 1; - - memset(&cmd, 0, sizeof(cmd)); - cmd.hdr.op_code = IL_PHY_CALIBRATE_DIFF_GAIN_CMD; - cmd.diff_gain_a = data->delta_gain_code[0]; - cmd.diff_gain_b = data->delta_gain_code[1]; - cmd.diff_gain_c = data->delta_gain_code[2]; - ret = il_send_cmd_pdu(il, C_PHY_CALIBRATION, sizeof(cmd), &cmd); - if (ret) - D_CALIB("fail sending cmd " "C_PHY_CALIBRATION\n"); - - /* TODO we might want recalculate - * rx_chain in rxon cmd */ - - /* Mark so we run this algo only once! */ - data->state = IL_CHAIN_NOISE_CALIBRATED; - } -} - -/* - * Accumulate 16 beacons of signal and noise stats for each of - * 3 receivers/antennas/rx-chains, then figure out: - * 1) Which antennas are connected. - * 2) Differential rx gain settings to balance the 3 receivers. - */ -void -il4965_chain_noise_calibration(struct il_priv *il, void *stat_resp) -{ - struct il_chain_noise_data *data = NULL; - - u32 chain_noise_a; - u32 chain_noise_b; - u32 chain_noise_c; - u32 chain_sig_a; - u32 chain_sig_b; - u32 chain_sig_c; - u32 average_sig[NUM_RX_CHAINS] = { INITIALIZATION_VALUE }; - u32 average_noise[NUM_RX_CHAINS] = { INITIALIZATION_VALUE }; - u32 min_average_noise = MIN_AVERAGE_NOISE_MAX_VALUE; - u16 min_average_noise_antenna_i = INITIALIZATION_VALUE; - u16 i = 0; - u16 rxon_chnum = INITIALIZATION_VALUE; - u16 stat_chnum = INITIALIZATION_VALUE; - u8 rxon_band24; - u8 stat_band24; - unsigned long flags; - struct stats_rx_non_phy *rx_info; - - if (il->disable_chain_noise_cal) - return; - - data = &(il->chain_noise_data); - - /* - * Accumulate just the first "chain_noise_num_beacons" after - * the first association, then we're done forever. - */ - if (data->state != IL_CHAIN_NOISE_ACCUMULATE) { - if (data->state == IL_CHAIN_NOISE_ALIVE) - D_CALIB("Wait for noise calib reset\n"); - return; - } - - spin_lock_irqsave(&il->lock, flags); - - rx_info = &(((struct il_notif_stats *)stat_resp)->rx.general); - - if (rx_info->interference_data_flag != INTERFERENCE_DATA_AVAILABLE) { - D_CALIB(" << Interference data unavailable\n"); - spin_unlock_irqrestore(&il->lock, flags); - return; - } - - rxon_band24 = !!(il->staging.flags & RXON_FLG_BAND_24G_MSK); - rxon_chnum = le16_to_cpu(il->staging.channel); - - stat_band24 = - !!(((struct il_notif_stats *)stat_resp)-> - flag & STATS_REPLY_FLG_BAND_24G_MSK); - stat_chnum = - le32_to_cpu(((struct il_notif_stats *)stat_resp)->flag) >> 16; - - /* Make sure we accumulate data for just the associated channel - * (even if scanning). */ - if (rxon_chnum != stat_chnum || rxon_band24 != stat_band24) { - D_CALIB("Stats not from chan=%d, band24=%d\n", rxon_chnum, - rxon_band24); - spin_unlock_irqrestore(&il->lock, flags); - return; - } - - /* - * Accumulate beacon stats values across - * "chain_noise_num_beacons" - */ - chain_noise_a = - le32_to_cpu(rx_info->beacon_silence_rssi_a) & IN_BAND_FILTER; - chain_noise_b = - le32_to_cpu(rx_info->beacon_silence_rssi_b) & IN_BAND_FILTER; - chain_noise_c = - le32_to_cpu(rx_info->beacon_silence_rssi_c) & IN_BAND_FILTER; - - chain_sig_a = le32_to_cpu(rx_info->beacon_rssi_a) & IN_BAND_FILTER; - chain_sig_b = le32_to_cpu(rx_info->beacon_rssi_b) & IN_BAND_FILTER; - chain_sig_c = le32_to_cpu(rx_info->beacon_rssi_c) & IN_BAND_FILTER; - - spin_unlock_irqrestore(&il->lock, flags); - - data->beacon_count++; - - data->chain_noise_a = (chain_noise_a + data->chain_noise_a); - data->chain_noise_b = (chain_noise_b + data->chain_noise_b); - data->chain_noise_c = (chain_noise_c + data->chain_noise_c); - - data->chain_signal_a = (chain_sig_a + data->chain_signal_a); - data->chain_signal_b = (chain_sig_b + data->chain_signal_b); - data->chain_signal_c = (chain_sig_c + data->chain_signal_c); - - D_CALIB("chan=%d, band24=%d, beacon=%d\n", rxon_chnum, rxon_band24, - data->beacon_count); - D_CALIB("chain_sig: a %d b %d c %d\n", chain_sig_a, chain_sig_b, - chain_sig_c); - D_CALIB("chain_noise: a %d b %d c %d\n", chain_noise_a, chain_noise_b, - chain_noise_c); - - /* If this is the "chain_noise_num_beacons", determine: - * 1) Disconnected antennas (using signal strengths) - * 2) Differential gain (using silence noise) to balance receivers */ - if (data->beacon_count != il->cfg->chain_noise_num_beacons) - return; - - /* Analyze signal for disconnected antenna */ - il4965_find_disconn_antenna(il, average_sig, data); - - /* Analyze noise for rx balance */ - average_noise[0] = - data->chain_noise_a / il->cfg->chain_noise_num_beacons; - average_noise[1] = - data->chain_noise_b / il->cfg->chain_noise_num_beacons; - average_noise[2] = - data->chain_noise_c / il->cfg->chain_noise_num_beacons; - - for (i = 0; i < NUM_RX_CHAINS; i++) { - if (!data->disconn_array[i] && - average_noise[i] <= min_average_noise) { - /* This means that chain i is active and has - * lower noise values so far: */ - min_average_noise = average_noise[i]; - min_average_noise_antenna_i = i; - } - } - - D_CALIB("average_noise: a %d b %d c %d\n", average_noise[0], - average_noise[1], average_noise[2]); - - D_CALIB("min_average_noise = %d, antenna %d\n", min_average_noise, - min_average_noise_antenna_i); - - il4965_gain_computation(il, average_noise, min_average_noise_antenna_i, - min_average_noise, - il4965_find_first_chain(il->cfg->valid_rx_ant)); - - /* Some power changes may have been made during the calibration. - * Update and commit the RXON - */ - if (il->ops->update_chain_flags) - il->ops->update_chain_flags(il); - - data->state = IL_CHAIN_NOISE_DONE; - il_power_update_mode(il, false); -} - -void -il4965_reset_run_time_calib(struct il_priv *il) -{ - int i; - memset(&(il->sensitivity_data), 0, sizeof(struct il_sensitivity_data)); - memset(&(il->chain_noise_data), 0, sizeof(struct il_chain_noise_data)); - for (i = 0; i < NUM_RX_CHAINS; i++) - il->chain_noise_data.delta_gain_code[i] = - CHAIN_NOISE_DELTA_GAIN_INIT_VAL; - - /* Ask for stats now, the uCode will send notification - * periodically after association */ - il_send_stats_request(il, CMD_ASYNC, true); -} diff --git a/drivers/net/wireless/iwlegacy/4965-debug.c b/drivers/net/wireless/iwlegacy/4965-debug.c deleted file mode 100644 index e0597bfdddb8..000000000000 --- a/drivers/net/wireless/iwlegacy/4965-debug.c +++ /dev/null @@ -1,752 +0,0 @@ -/****************************************************************************** -* -* GPL LICENSE SUMMARY -* -* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. -* -* This program is free software; you can redistribute it and/or modify -* it under the terms of version 2 of the GNU General Public License as -* published by the Free Software Foundation. -* -* This program is distributed in the hope that it will be useful, but -* WITHOUT ANY WARRANTY; without even the implied warranty of -* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -* General Public License for more details. -* -* You should have received a copy of the GNU General Public License -* along with this program; if not, write to the Free Software -* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, -* USA -* -* The full GNU General Public License is included in this distribution -* in the file called LICENSE.GPL. -* -* Contact Information: -* Intel Linux Wireless <ilw@linux.intel.com> -* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 -*****************************************************************************/ -#include "common.h" -#include "4965.h" - -static const char *fmt_value = " %-30s %10u\n"; -static const char *fmt_table = " %-30s %10u %10u %10u %10u\n"; -static const char *fmt_header = - "%-32s current cumulative delta max\n"; - -static int -il4965_stats_flag(struct il_priv *il, char *buf, int bufsz) -{ - int p = 0; - u32 flag; - - flag = le32_to_cpu(il->_4965.stats.flag); - - p += scnprintf(buf + p, bufsz - p, "Statistics Flag(0x%X):\n", flag); - if (flag & UCODE_STATS_CLEAR_MSK) - p += scnprintf(buf + p, bufsz - p, - "\tStatistics have been cleared\n"); - p += scnprintf(buf + p, bufsz - p, "\tOperational Frequency: %s\n", - (flag & UCODE_STATS_FREQUENCY_MSK) ? "2.4 GHz" : - "5.2 GHz"); - p += scnprintf(buf + p, bufsz - p, "\tTGj Narrow Band: %s\n", - (flag & UCODE_STATS_NARROW_BAND_MSK) ? "enabled" : - "disabled"); - - return p; -} - -static ssize_t -il4965_ucode_rx_stats_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct il_priv *il = file->private_data; - int pos = 0; - char *buf; - int bufsz = - sizeof(struct stats_rx_phy) * 40 + - sizeof(struct stats_rx_non_phy) * 40 + - sizeof(struct stats_rx_ht_phy) * 40 + 400; - ssize_t ret; - struct stats_rx_phy *ofdm, *accum_ofdm, *delta_ofdm, *max_ofdm; - struct stats_rx_phy *cck, *accum_cck, *delta_cck, *max_cck; - struct stats_rx_non_phy *general, *accum_general; - struct stats_rx_non_phy *delta_general, *max_general; - struct stats_rx_ht_phy *ht, *accum_ht, *delta_ht, *max_ht; - - if (!il_is_alive(il)) - return -EAGAIN; - - buf = kzalloc(bufsz, GFP_KERNEL); - if (!buf) { - IL_ERR("Can not allocate Buffer\n"); - return -ENOMEM; - } - - /* - * the statistic information display here is based on - * the last stats notification from uCode - * might not reflect the current uCode activity - */ - ofdm = &il->_4965.stats.rx.ofdm; - cck = &il->_4965.stats.rx.cck; - general = &il->_4965.stats.rx.general; - ht = &il->_4965.stats.rx.ofdm_ht; - accum_ofdm = &il->_4965.accum_stats.rx.ofdm; - accum_cck = &il->_4965.accum_stats.rx.cck; - accum_general = &il->_4965.accum_stats.rx.general; - accum_ht = &il->_4965.accum_stats.rx.ofdm_ht; - delta_ofdm = &il->_4965.delta_stats.rx.ofdm; - delta_cck = &il->_4965.delta_stats.rx.cck; - delta_general = &il->_4965.delta_stats.rx.general; - delta_ht = &il->_4965.delta_stats.rx.ofdm_ht; - max_ofdm = &il->_4965.max_delta.rx.ofdm; - max_cck = &il->_4965.max_delta.rx.cck; - max_general = &il->_4965.max_delta.rx.general; - max_ht = &il->_4965.max_delta.rx.ofdm_ht; - - pos += il4965_stats_flag(il, buf, bufsz); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_header, - "Statistics_Rx - OFDM:"); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "ina_cnt:", - le32_to_cpu(ofdm->ina_cnt), accum_ofdm->ina_cnt, - delta_ofdm->ina_cnt, max_ofdm->ina_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "fina_cnt:", - le32_to_cpu(ofdm->fina_cnt), accum_ofdm->fina_cnt, - delta_ofdm->fina_cnt, max_ofdm->fina_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "plcp_err:", - le32_to_cpu(ofdm->plcp_err), accum_ofdm->plcp_err, - delta_ofdm->plcp_err, max_ofdm->plcp_err); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "crc32_err:", - le32_to_cpu(ofdm->crc32_err), accum_ofdm->crc32_err, - delta_ofdm->crc32_err, max_ofdm->crc32_err); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "overrun_err:", - le32_to_cpu(ofdm->overrun_err), accum_ofdm->overrun_err, - delta_ofdm->overrun_err, max_ofdm->overrun_err); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "early_overrun_err:", - le32_to_cpu(ofdm->early_overrun_err), - accum_ofdm->early_overrun_err, - delta_ofdm->early_overrun_err, - max_ofdm->early_overrun_err); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "crc32_good:", - le32_to_cpu(ofdm->crc32_good), accum_ofdm->crc32_good, - delta_ofdm->crc32_good, max_ofdm->crc32_good); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "false_alarm_cnt:", - le32_to_cpu(ofdm->false_alarm_cnt), - accum_ofdm->false_alarm_cnt, delta_ofdm->false_alarm_cnt, - max_ofdm->false_alarm_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "fina_sync_err_cnt:", - le32_to_cpu(ofdm->fina_sync_err_cnt), - accum_ofdm->fina_sync_err_cnt, - delta_ofdm->fina_sync_err_cnt, - max_ofdm->fina_sync_err_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "sfd_timeout:", - le32_to_cpu(ofdm->sfd_timeout), accum_ofdm->sfd_timeout, - delta_ofdm->sfd_timeout, max_ofdm->sfd_timeout); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "fina_timeout:", - le32_to_cpu(ofdm->fina_timeout), accum_ofdm->fina_timeout, - delta_ofdm->fina_timeout, max_ofdm->fina_timeout); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "unresponded_rts:", - le32_to_cpu(ofdm->unresponded_rts), - accum_ofdm->unresponded_rts, delta_ofdm->unresponded_rts, - max_ofdm->unresponded_rts); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "rxe_frame_lmt_ovrun:", - le32_to_cpu(ofdm->rxe_frame_limit_overrun), - accum_ofdm->rxe_frame_limit_overrun, - delta_ofdm->rxe_frame_limit_overrun, - max_ofdm->rxe_frame_limit_overrun); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "sent_ack_cnt:", - le32_to_cpu(ofdm->sent_ack_cnt), accum_ofdm->sent_ack_cnt, - delta_ofdm->sent_ack_cnt, max_ofdm->sent_ack_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "sent_cts_cnt:", - le32_to_cpu(ofdm->sent_cts_cnt), accum_ofdm->sent_cts_cnt, - delta_ofdm->sent_cts_cnt, max_ofdm->sent_cts_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "sent_ba_rsp_cnt:", - le32_to_cpu(ofdm->sent_ba_rsp_cnt), - accum_ofdm->sent_ba_rsp_cnt, delta_ofdm->sent_ba_rsp_cnt, - max_ofdm->sent_ba_rsp_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "dsp_self_kill:", - le32_to_cpu(ofdm->dsp_self_kill), - accum_ofdm->dsp_self_kill, delta_ofdm->dsp_self_kill, - max_ofdm->dsp_self_kill); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "mh_format_err:", - le32_to_cpu(ofdm->mh_format_err), - accum_ofdm->mh_format_err, delta_ofdm->mh_format_err, - max_ofdm->mh_format_err); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, - "re_acq_main_rssi_sum:", - le32_to_cpu(ofdm->re_acq_main_rssi_sum), - accum_ofdm->re_acq_main_rssi_sum, - delta_ofdm->re_acq_main_rssi_sum, - max_ofdm->re_acq_main_rssi_sum); - - pos += - scnprintf(buf + pos, bufsz - pos, fmt_header, - "Statistics_Rx - CCK:"); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "ina_cnt:", - le32_to_cpu(cck->ina_cnt), accum_cck->ina_cnt, - delta_cck->ina_cnt, max_cck->ina_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "fina_cnt:", - le32_to_cpu(cck->fina_cnt), accum_cck->fina_cnt, - delta_cck->fina_cnt, max_cck->fina_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "plcp_err:", - le32_to_cpu(cck->plcp_err), accum_cck->plcp_err, - delta_cck->plcp_err, max_cck->plcp_err); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "crc32_err:", - le32_to_cpu(cck->crc32_err), accum_cck->crc32_err, - delta_cck->crc32_err, max_cck->crc32_err); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "overrun_err:", - le32_to_cpu(cck->overrun_err), accum_cck->overrun_err, - delta_cck->overrun_err, max_cck->overrun_err); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "early_overrun_err:", - le32_to_cpu(cck->early_overrun_err), - accum_cck->early_overrun_err, - delta_cck->early_overrun_err, max_cck->early_overrun_err); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "crc32_good:", - le32_to_cpu(cck->crc32_good), accum_cck->crc32_good, - delta_cck->crc32_good, max_cck->crc32_good); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "false_alarm_cnt:", - le32_to_cpu(cck->false_alarm_cnt), - accum_cck->false_alarm_cnt, delta_cck->false_alarm_cnt, - max_cck->false_alarm_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "fina_sync_err_cnt:", - le32_to_cpu(cck->fina_sync_err_cnt), - accum_cck->fina_sync_err_cnt, - delta_cck->fina_sync_err_cnt, max_cck->fina_sync_err_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "sfd_timeout:", - le32_to_cpu(cck->sfd_timeout), accum_cck->sfd_timeout, - delta_cck->sfd_timeout, max_cck->sfd_timeout); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "fina_timeout:", - le32_to_cpu(cck->fina_timeout), accum_cck->fina_timeout, - delta_cck->fina_timeout, max_cck->fina_timeout); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "unresponded_rts:", - le32_to_cpu(cck->unresponded_rts), - accum_cck->unresponded_rts, delta_cck->unresponded_rts, - max_cck->unresponded_rts); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "rxe_frame_lmt_ovrun:", - le32_to_cpu(cck->rxe_frame_limit_overrun), - accum_cck->rxe_frame_limit_overrun, - delta_cck->rxe_frame_limit_overrun, - max_cck->rxe_frame_limit_overrun); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "sent_ack_cnt:", - le32_to_cpu(cck->sent_ack_cnt), accum_cck->sent_ack_cnt, - delta_cck->sent_ack_cnt, max_cck->sent_ack_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "sent_cts_cnt:", - le32_to_cpu(cck->sent_cts_cnt), accum_cck->sent_cts_cnt, - delta_cck->sent_cts_cnt, max_cck->sent_cts_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "sent_ba_rsp_cnt:", - le32_to_cpu(cck->sent_ba_rsp_cnt), - accum_cck->sent_ba_rsp_cnt, delta_cck->sent_ba_rsp_cnt, - max_cck->sent_ba_rsp_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "dsp_self_kill:", - le32_to_cpu(cck->dsp_self_kill), accum_cck->dsp_self_kill, - delta_cck->dsp_self_kill, max_cck->dsp_self_kill); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "mh_format_err:", - le32_to_cpu(cck->mh_format_err), accum_cck->mh_format_err, - delta_cck->mh_format_err, max_cck->mh_format_err); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, - "re_acq_main_rssi_sum:", - le32_to_cpu(cck->re_acq_main_rssi_sum), - accum_cck->re_acq_main_rssi_sum, - delta_cck->re_acq_main_rssi_sum, - max_cck->re_acq_main_rssi_sum); - - pos += - scnprintf(buf + pos, bufsz - pos, fmt_header, - "Statistics_Rx - GENERAL:"); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "bogus_cts:", - le32_to_cpu(general->bogus_cts), accum_general->bogus_cts, - delta_general->bogus_cts, max_general->bogus_cts); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "bogus_ack:", - le32_to_cpu(general->bogus_ack), accum_general->bogus_ack, - delta_general->bogus_ack, max_general->bogus_ack); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "non_bssid_frames:", - le32_to_cpu(general->non_bssid_frames), - accum_general->non_bssid_frames, - delta_general->non_bssid_frames, - max_general->non_bssid_frames); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "filtered_frames:", - le32_to_cpu(general->filtered_frames), - accum_general->filtered_frames, - delta_general->filtered_frames, - max_general->filtered_frames); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "non_channel_beacons:", - le32_to_cpu(general->non_channel_beacons), - accum_general->non_channel_beacons, - delta_general->non_channel_beacons, - max_general->non_channel_beacons); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "channel_beacons:", - le32_to_cpu(general->channel_beacons), - accum_general->channel_beacons, - delta_general->channel_beacons, - max_general->channel_beacons); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "num_missed_bcon:", - le32_to_cpu(general->num_missed_bcon), - accum_general->num_missed_bcon, - delta_general->num_missed_bcon, - max_general->num_missed_bcon); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, - "adc_rx_saturation_time:", - le32_to_cpu(general->adc_rx_saturation_time), - accum_general->adc_rx_saturation_time, - delta_general->adc_rx_saturation_time, - max_general->adc_rx_saturation_time); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, - "ina_detect_search_tm:", - le32_to_cpu(general->ina_detection_search_time), - accum_general->ina_detection_search_time, - delta_general->ina_detection_search_time, - max_general->ina_detection_search_time); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, - "beacon_silence_rssi_a:", - le32_to_cpu(general->beacon_silence_rssi_a), - accum_general->beacon_silence_rssi_a, - delta_general->beacon_silence_rssi_a, - max_general->beacon_silence_rssi_a); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, - "beacon_silence_rssi_b:", - le32_to_cpu(general->beacon_silence_rssi_b), - accum_general->beacon_silence_rssi_b, - delta_general->beacon_silence_rssi_b, - max_general->beacon_silence_rssi_b); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, - "beacon_silence_rssi_c:", - le32_to_cpu(general->beacon_silence_rssi_c), - accum_general->beacon_silence_rssi_c, - delta_general->beacon_silence_rssi_c, - max_general->beacon_silence_rssi_c); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, - "interference_data_flag:", - le32_to_cpu(general->interference_data_flag), - accum_general->interference_data_flag, - delta_general->interference_data_flag, - max_general->interference_data_flag); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "channel_load:", - le32_to_cpu(general->channel_load), - accum_general->channel_load, delta_general->channel_load, - max_general->channel_load); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "dsp_false_alarms:", - le32_to_cpu(general->dsp_false_alarms), - accum_general->dsp_false_alarms, - delta_general->dsp_false_alarms, - max_general->dsp_false_alarms); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "beacon_rssi_a:", - le32_to_cpu(general->beacon_rssi_a), - accum_general->beacon_rssi_a, - delta_general->beacon_rssi_a, max_general->beacon_rssi_a); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "beacon_rssi_b:", - le32_to_cpu(general->beacon_rssi_b), - accum_general->beacon_rssi_b, - delta_general->beacon_rssi_b, max_general->beacon_rssi_b); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "beacon_rssi_c:", - le32_to_cpu(general->beacon_rssi_c), - accum_general->beacon_rssi_c, - delta_general->beacon_rssi_c, max_general->beacon_rssi_c); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "beacon_energy_a:", - le32_to_cpu(general->beacon_energy_a), - accum_general->beacon_energy_a, - delta_general->beacon_energy_a, - max_general->beacon_energy_a); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "beacon_energy_b:", - le32_to_cpu(general->beacon_energy_b), - accum_general->beacon_energy_b, - delta_general->beacon_energy_b, - max_general->beacon_energy_b); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "beacon_energy_c:", - le32_to_cpu(general->beacon_energy_c), - accum_general->beacon_energy_c, - delta_general->beacon_energy_c, - max_general->beacon_energy_c); - - pos += - scnprintf(buf + pos, bufsz - pos, fmt_header, - "Statistics_Rx - OFDM_HT:"); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "plcp_err:", - le32_to_cpu(ht->plcp_err), accum_ht->plcp_err, - delta_ht->plcp_err, max_ht->plcp_err); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "overrun_err:", - le32_to_cpu(ht->overrun_err), accum_ht->overrun_err, - delta_ht->overrun_err, max_ht->overrun_err); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "early_overrun_err:", - le32_to_cpu(ht->early_overrun_err), - accum_ht->early_overrun_err, delta_ht->early_overrun_err, - max_ht->early_overrun_err); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "crc32_good:", - le32_to_cpu(ht->crc32_good), accum_ht->crc32_good, - delta_ht->crc32_good, max_ht->crc32_good); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "crc32_err:", - le32_to_cpu(ht->crc32_err), accum_ht->crc32_err, - delta_ht->crc32_err, max_ht->crc32_err); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "mh_format_err:", - le32_to_cpu(ht->mh_format_err), accum_ht->mh_format_err, - delta_ht->mh_format_err, max_ht->mh_format_err); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "agg_crc32_good:", - le32_to_cpu(ht->agg_crc32_good), accum_ht->agg_crc32_good, - delta_ht->agg_crc32_good, max_ht->agg_crc32_good); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "agg_mpdu_cnt:", - le32_to_cpu(ht->agg_mpdu_cnt), accum_ht->agg_mpdu_cnt, - delta_ht->agg_mpdu_cnt, max_ht->agg_mpdu_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "agg_cnt:", - le32_to_cpu(ht->agg_cnt), accum_ht->agg_cnt, - delta_ht->agg_cnt, max_ht->agg_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "unsupport_mcs:", - le32_to_cpu(ht->unsupport_mcs), accum_ht->unsupport_mcs, - delta_ht->unsupport_mcs, max_ht->unsupport_mcs); - - ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); - kfree(buf); - return ret; -} - -static ssize_t -il4965_ucode_tx_stats_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct il_priv *il = file->private_data; - int pos = 0; - char *buf; - int bufsz = (sizeof(struct stats_tx) * 48) + 250; - ssize_t ret; - struct stats_tx *tx, *accum_tx, *delta_tx, *max_tx; - - if (!il_is_alive(il)) - return -EAGAIN; - - buf = kzalloc(bufsz, GFP_KERNEL); - if (!buf) { - IL_ERR("Can not allocate Buffer\n"); - return -ENOMEM; - } - - /* the statistic information display here is based on - * the last stats notification from uCode - * might not reflect the current uCode activity - */ - tx = &il->_4965.stats.tx; - accum_tx = &il->_4965.accum_stats.tx; - delta_tx = &il->_4965.delta_stats.tx; - max_tx = &il->_4965.max_delta.tx; - - pos += il4965_stats_flag(il, buf, bufsz); - pos += scnprintf(buf + pos, bufsz - pos, fmt_header, "Statistics_Tx:"); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "preamble:", - le32_to_cpu(tx->preamble_cnt), accum_tx->preamble_cnt, - delta_tx->preamble_cnt, max_tx->preamble_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "rx_detected_cnt:", - le32_to_cpu(tx->rx_detected_cnt), - accum_tx->rx_detected_cnt, delta_tx->rx_detected_cnt, - max_tx->rx_detected_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "bt_prio_defer_cnt:", - le32_to_cpu(tx->bt_prio_defer_cnt), - accum_tx->bt_prio_defer_cnt, delta_tx->bt_prio_defer_cnt, - max_tx->bt_prio_defer_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "bt_prio_kill_cnt:", - le32_to_cpu(tx->bt_prio_kill_cnt), - accum_tx->bt_prio_kill_cnt, delta_tx->bt_prio_kill_cnt, - max_tx->bt_prio_kill_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "few_bytes_cnt:", - le32_to_cpu(tx->few_bytes_cnt), accum_tx->few_bytes_cnt, - delta_tx->few_bytes_cnt, max_tx->few_bytes_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "cts_timeout:", - le32_to_cpu(tx->cts_timeout), accum_tx->cts_timeout, - delta_tx->cts_timeout, max_tx->cts_timeout); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "ack_timeout:", - le32_to_cpu(tx->ack_timeout), accum_tx->ack_timeout, - delta_tx->ack_timeout, max_tx->ack_timeout); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "expected_ack_cnt:", - le32_to_cpu(tx->expected_ack_cnt), - accum_tx->expected_ack_cnt, delta_tx->expected_ack_cnt, - max_tx->expected_ack_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "actual_ack_cnt:", - le32_to_cpu(tx->actual_ack_cnt), accum_tx->actual_ack_cnt, - delta_tx->actual_ack_cnt, max_tx->actual_ack_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "dump_msdu_cnt:", - le32_to_cpu(tx->dump_msdu_cnt), accum_tx->dump_msdu_cnt, - delta_tx->dump_msdu_cnt, max_tx->dump_msdu_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, - "abort_nxt_frame_mismatch:", - le32_to_cpu(tx->burst_abort_next_frame_mismatch_cnt), - accum_tx->burst_abort_next_frame_mismatch_cnt, - delta_tx->burst_abort_next_frame_mismatch_cnt, - max_tx->burst_abort_next_frame_mismatch_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, - "abort_missing_nxt_frame:", - le32_to_cpu(tx->burst_abort_missing_next_frame_cnt), - accum_tx->burst_abort_missing_next_frame_cnt, - delta_tx->burst_abort_missing_next_frame_cnt, - max_tx->burst_abort_missing_next_frame_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, - "cts_timeout_collision:", - le32_to_cpu(tx->cts_timeout_collision), - accum_tx->cts_timeout_collision, - delta_tx->cts_timeout_collision, - max_tx->cts_timeout_collision); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, - "ack_ba_timeout_collision:", - le32_to_cpu(tx->ack_or_ba_timeout_collision), - accum_tx->ack_or_ba_timeout_collision, - delta_tx->ack_or_ba_timeout_collision, - max_tx->ack_or_ba_timeout_collision); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "agg ba_timeout:", - le32_to_cpu(tx->agg.ba_timeout), accum_tx->agg.ba_timeout, - delta_tx->agg.ba_timeout, max_tx->agg.ba_timeout); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, - "agg ba_resched_frames:", - le32_to_cpu(tx->agg.ba_reschedule_frames), - accum_tx->agg.ba_reschedule_frames, - delta_tx->agg.ba_reschedule_frames, - max_tx->agg.ba_reschedule_frames); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, - "agg scd_query_agg_frame:", - le32_to_cpu(tx->agg.scd_query_agg_frame_cnt), - accum_tx->agg.scd_query_agg_frame_cnt, - delta_tx->agg.scd_query_agg_frame_cnt, - max_tx->agg.scd_query_agg_frame_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, - "agg scd_query_no_agg:", - le32_to_cpu(tx->agg.scd_query_no_agg), - accum_tx->agg.scd_query_no_agg, - delta_tx->agg.scd_query_no_agg, - max_tx->agg.scd_query_no_agg); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "agg scd_query_agg:", - le32_to_cpu(tx->agg.scd_query_agg), - accum_tx->agg.scd_query_agg, delta_tx->agg.scd_query_agg, - max_tx->agg.scd_query_agg); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, - "agg scd_query_mismatch:", - le32_to_cpu(tx->agg.scd_query_mismatch), - accum_tx->agg.scd_query_mismatch, - delta_tx->agg.scd_query_mismatch, - max_tx->agg.scd_query_mismatch); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "agg frame_not_ready:", - le32_to_cpu(tx->agg.frame_not_ready), - accum_tx->agg.frame_not_ready, - delta_tx->agg.frame_not_ready, - max_tx->agg.frame_not_ready); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "agg underrun:", - le32_to_cpu(tx->agg.underrun), accum_tx->agg.underrun, - delta_tx->agg.underrun, max_tx->agg.underrun); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "agg bt_prio_kill:", - le32_to_cpu(tx->agg.bt_prio_kill), - accum_tx->agg.bt_prio_kill, delta_tx->agg.bt_prio_kill, - max_tx->agg.bt_prio_kill); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "agg rx_ba_rsp_cnt:", - le32_to_cpu(tx->agg.rx_ba_rsp_cnt), - accum_tx->agg.rx_ba_rsp_cnt, delta_tx->agg.rx_ba_rsp_cnt, - max_tx->agg.rx_ba_rsp_cnt); - - ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); - kfree(buf); - return ret; -} - -static ssize_t -il4965_ucode_general_stats_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct il_priv *il = file->private_data; - int pos = 0; - char *buf; - int bufsz = sizeof(struct stats_general) * 10 + 300; - ssize_t ret; - struct stats_general_common *general, *accum_general; - struct stats_general_common *delta_general, *max_general; - struct stats_dbg *dbg, *accum_dbg, *delta_dbg, *max_dbg; - struct stats_div *div, *accum_div, *delta_div, *max_div; - - if (!il_is_alive(il)) - return -EAGAIN; - - buf = kzalloc(bufsz, GFP_KERNEL); - if (!buf) { - IL_ERR("Can not allocate Buffer\n"); - return -ENOMEM; - } - - /* the statistic information display here is based on - * the last stats notification from uCode - * might not reflect the current uCode activity - */ - general = &il->_4965.stats.general.common; - dbg = &il->_4965.stats.general.common.dbg; - div = &il->_4965.stats.general.common.div; - accum_general = &il->_4965.accum_stats.general.common; - accum_dbg = &il->_4965.accum_stats.general.common.dbg; - accum_div = &il->_4965.accum_stats.general.common.div; - delta_general = &il->_4965.delta_stats.general.common; - max_general = &il->_4965.max_delta.general.common; - delta_dbg = &il->_4965.delta_stats.general.common.dbg; - max_dbg = &il->_4965.max_delta.general.common.dbg; - delta_div = &il->_4965.delta_stats.general.common.div; - max_div = &il->_4965.max_delta.general.common.div; - - pos += il4965_stats_flag(il, buf, bufsz); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_header, - "Statistics_General:"); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_value, "temperature:", - le32_to_cpu(general->temperature)); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_value, "ttl_timestamp:", - le32_to_cpu(general->ttl_timestamp)); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "burst_check:", - le32_to_cpu(dbg->burst_check), accum_dbg->burst_check, - delta_dbg->burst_check, max_dbg->burst_check); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "burst_count:", - le32_to_cpu(dbg->burst_count), accum_dbg->burst_count, - delta_dbg->burst_count, max_dbg->burst_count); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, - "wait_for_silence_timeout_count:", - le32_to_cpu(dbg->wait_for_silence_timeout_cnt), - accum_dbg->wait_for_silence_timeout_cnt, - delta_dbg->wait_for_silence_timeout_cnt, - max_dbg->wait_for_silence_timeout_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "sleep_time:", - le32_to_cpu(general->sleep_time), - accum_general->sleep_time, delta_general->sleep_time, - max_general->sleep_time); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "slots_out:", - le32_to_cpu(general->slots_out), accum_general->slots_out, - delta_general->slots_out, max_general->slots_out); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "slots_idle:", - le32_to_cpu(general->slots_idle), - accum_general->slots_idle, delta_general->slots_idle, - max_general->slots_idle); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "tx_on_a:", - le32_to_cpu(div->tx_on_a), accum_div->tx_on_a, - delta_div->tx_on_a, max_div->tx_on_a); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "tx_on_b:", - le32_to_cpu(div->tx_on_b), accum_div->tx_on_b, - delta_div->tx_on_b, max_div->tx_on_b); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "exec_time:", - le32_to_cpu(div->exec_time), accum_div->exec_time, - delta_div->exec_time, max_div->exec_time); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "probe_time:", - le32_to_cpu(div->probe_time), accum_div->probe_time, - delta_div->probe_time, max_div->probe_time); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "rx_enable_counter:", - le32_to_cpu(general->rx_enable_counter), - accum_general->rx_enable_counter, - delta_general->rx_enable_counter, - max_general->rx_enable_counter); - pos += - scnprintf(buf + pos, bufsz - pos, fmt_table, "num_of_sos_states:", - le32_to_cpu(general->num_of_sos_states), - accum_general->num_of_sos_states, - delta_general->num_of_sos_states, - max_general->num_of_sos_states); - ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); - kfree(buf); - return ret; -} - -const struct il_debugfs_ops il4965_debugfs_ops = { - .rx_stats_read = il4965_ucode_rx_stats_read, - .tx_stats_read = il4965_ucode_tx_stats_read, - .general_stats_read = il4965_ucode_general_stats_read, -}; diff --git a/drivers/net/wireless/iwlegacy/4965-mac.c b/drivers/net/wireless/iwlegacy/4965-mac.c deleted file mode 100644 index 6656215a13a9..000000000000 --- a/drivers/net/wireless/iwlegacy/4965-mac.c +++ /dev/null @@ -1,6868 +0,0 @@ -/****************************************************************************** - * - * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved. - * - * Portions of this file are derived from the ipw3945 project, as well - * as portions of the ieee80211 subsystem header files. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA - * - * The full GNU General Public License is included in this distribution in the - * file called LICENSE. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - *****************************************************************************/ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/pci.h> -#include <linux/pci-aspm.h> -#include <linux/slab.h> -#include <linux/dma-mapping.h> -#include <linux/delay.h> -#include <linux/sched.h> -#include <linux/skbuff.h> -#include <linux/netdevice.h> -#include <linux/firmware.h> -#include <linux/etherdevice.h> -#include <linux/if_arp.h> - -#include <net/mac80211.h> - -#include <asm/div64.h> - -#define DRV_NAME "iwl4965" - -#include "common.h" -#include "4965.h" - -/****************************************************************************** - * - * module boiler plate - * - ******************************************************************************/ - -/* - * module name, copyright, version, etc. - */ -#define DRV_DESCRIPTION "Intel(R) Wireless WiFi 4965 driver for Linux" - -#ifdef CONFIG_IWLEGACY_DEBUG -#define VD "d" -#else -#define VD -#endif - -#define DRV_VERSION IWLWIFI_VERSION VD - -MODULE_DESCRIPTION(DRV_DESCRIPTION); -MODULE_VERSION(DRV_VERSION); -MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("iwl4965"); - -void -il4965_check_abort_status(struct il_priv *il, u8 frame_count, u32 status) -{ - if (frame_count == 1 && status == TX_STATUS_FAIL_RFKILL_FLUSH) { - IL_ERR("Tx flush command to flush out all frames\n"); - if (!test_bit(S_EXIT_PENDING, &il->status)) - queue_work(il->workqueue, &il->tx_flush); - } -} - -/* - * EEPROM - */ -struct il_mod_params il4965_mod_params = { - .restart_fw = 1, - /* the rest are 0 by default */ -}; - -void -il4965_rx_queue_reset(struct il_priv *il, struct il_rx_queue *rxq) -{ - unsigned long flags; - int i; - spin_lock_irqsave(&rxq->lock, flags); - INIT_LIST_HEAD(&rxq->rx_free); - INIT_LIST_HEAD(&rxq->rx_used); - /* Fill the rx_used queue with _all_ of the Rx buffers */ - for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) { - /* In the reset function, these buffers may have been allocated - * to an SKB, so we need to unmap and free potential storage */ - if (rxq->pool[i].page != NULL) { - pci_unmap_page(il->pci_dev, rxq->pool[i].page_dma, - PAGE_SIZE << il->hw_params.rx_page_order, - PCI_DMA_FROMDEVICE); - __il_free_pages(il, rxq->pool[i].page); - rxq->pool[i].page = NULL; - } - list_add_tail(&rxq->pool[i].list, &rxq->rx_used); - } - - for (i = 0; i < RX_QUEUE_SIZE; i++) - rxq->queue[i] = NULL; - - /* Set us so that we have processed and used all buffers, but have - * not restocked the Rx queue with fresh buffers */ - rxq->read = rxq->write = 0; - rxq->write_actual = 0; - rxq->free_count = 0; - spin_unlock_irqrestore(&rxq->lock, flags); -} - -int -il4965_rx_init(struct il_priv *il, struct il_rx_queue *rxq) -{ - u32 rb_size; - const u32 rfdnlog = RX_QUEUE_SIZE_LOG; /* 256 RBDs */ - u32 rb_timeout = 0; - - if (il->cfg->mod_params->amsdu_size_8K) - rb_size = FH49_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K; - else - rb_size = FH49_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K; - - /* Stop Rx DMA */ - il_wr(il, FH49_MEM_RCSR_CHNL0_CONFIG_REG, 0); - - /* Reset driver's Rx queue write idx */ - il_wr(il, FH49_RSCSR_CHNL0_RBDCB_WPTR_REG, 0); - - /* Tell device where to find RBD circular buffer in DRAM */ - il_wr(il, FH49_RSCSR_CHNL0_RBDCB_BASE_REG, (u32) (rxq->bd_dma >> 8)); - - /* Tell device where in DRAM to update its Rx status */ - il_wr(il, FH49_RSCSR_CHNL0_STTS_WPTR_REG, rxq->rb_stts_dma >> 4); - - /* Enable Rx DMA - * Direct rx interrupts to hosts - * Rx buffer size 4 or 8k - * RB timeout 0x10 - * 256 RBDs - */ - il_wr(il, FH49_MEM_RCSR_CHNL0_CONFIG_REG, - FH49_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL | - FH49_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL | - FH49_RCSR_CHNL0_RX_CONFIG_SINGLE_FRAME_MSK | - rb_size | - (rb_timeout << FH49_RCSR_RX_CONFIG_REG_IRQ_RBTH_POS) | - (rfdnlog << FH49_RCSR_RX_CONFIG_RBDCB_SIZE_POS)); - - /* Set interrupt coalescing timer to default (2048 usecs) */ - il_write8(il, CSR_INT_COALESCING, IL_HOST_INT_TIMEOUT_DEF); - - return 0; -} - -static void -il4965_set_pwr_vmain(struct il_priv *il) -{ -/* - * (for documentation purposes) - * to set power to V_AUX, do: - - if (pci_pme_capable(il->pci_dev, PCI_D3cold)) - il_set_bits_mask_prph(il, APMG_PS_CTRL_REG, - APMG_PS_CTRL_VAL_PWR_SRC_VAUX, - ~APMG_PS_CTRL_MSK_PWR_SRC); - */ - - il_set_bits_mask_prph(il, APMG_PS_CTRL_REG, - APMG_PS_CTRL_VAL_PWR_SRC_VMAIN, - ~APMG_PS_CTRL_MSK_PWR_SRC); -} - -int -il4965_hw_nic_init(struct il_priv *il) -{ - unsigned long flags; - struct il_rx_queue *rxq = &il->rxq; - int ret; - - spin_lock_irqsave(&il->lock, flags); - il_apm_init(il); - /* Set interrupt coalescing calibration timer to default (512 usecs) */ - il_write8(il, CSR_INT_COALESCING, IL_HOST_INT_CALIB_TIMEOUT_DEF); - spin_unlock_irqrestore(&il->lock, flags); - - il4965_set_pwr_vmain(il); - il4965_nic_config(il); - - /* Allocate the RX queue, or reset if it is already allocated */ - if (!rxq->bd) { - ret = il_rx_queue_alloc(il); - if (ret) { - IL_ERR("Unable to initialize Rx queue\n"); - return -ENOMEM; - } - } else - il4965_rx_queue_reset(il, rxq); - - il4965_rx_replenish(il); - - il4965_rx_init(il, rxq); - - spin_lock_irqsave(&il->lock, flags); - - rxq->need_update = 1; - il_rx_queue_update_write_ptr(il, rxq); - - spin_unlock_irqrestore(&il->lock, flags); - - /* Allocate or reset and init all Tx and Command queues */ - if (!il->txq) { - ret = il4965_txq_ctx_alloc(il); - if (ret) - return ret; - } else - il4965_txq_ctx_reset(il); - - set_bit(S_INIT, &il->status); - - return 0; -} - -/** - * il4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr - */ -static inline __le32 -il4965_dma_addr2rbd_ptr(struct il_priv *il, dma_addr_t dma_addr) -{ - return cpu_to_le32((u32) (dma_addr >> 8)); -} - -/** - * il4965_rx_queue_restock - refill RX queue from pre-allocated pool - * - * If there are slots in the RX queue that need to be restocked, - * and we have free pre-allocated buffers, fill the ranks as much - * as we can, pulling from rx_free. - * - * This moves the 'write' idx forward to catch up with 'processed', and - * also updates the memory address in the firmware to reference the new - * target buffer. - */ -void -il4965_rx_queue_restock(struct il_priv *il) -{ - struct il_rx_queue *rxq = &il->rxq; - struct list_head *element; - struct il_rx_buf *rxb; - unsigned long flags; - - spin_lock_irqsave(&rxq->lock, flags); - while (il_rx_queue_space(rxq) > 0 && rxq->free_count) { - /* The overwritten rxb must be a used one */ - rxb = rxq->queue[rxq->write]; - BUG_ON(rxb && rxb->page); - - /* Get next free Rx buffer, remove from free list */ - element = rxq->rx_free.next; - rxb = list_entry(element, struct il_rx_buf, list); - list_del(element); - - /* Point to Rx buffer via next RBD in circular buffer */ - rxq->bd[rxq->write] = - il4965_dma_addr2rbd_ptr(il, rxb->page_dma); - rxq->queue[rxq->write] = rxb; - rxq->write = (rxq->write + 1) & RX_QUEUE_MASK; - rxq->free_count--; - } - spin_unlock_irqrestore(&rxq->lock, flags); - /* If the pre-allocated buffer pool is dropping low, schedule to - * refill it */ - if (rxq->free_count <= RX_LOW_WATERMARK) - queue_work(il->workqueue, &il->rx_replenish); - - /* If we've added more space for the firmware to place data, tell it. - * Increment device's write pointer in multiples of 8. */ - if (rxq->write_actual != (rxq->write & ~0x7)) { - spin_lock_irqsave(&rxq->lock, flags); - rxq->need_update = 1; - spin_unlock_irqrestore(&rxq->lock, flags); - il_rx_queue_update_write_ptr(il, rxq); - } -} - -/** - * il4965_rx_replenish - Move all used packet from rx_used to rx_free - * - * When moving to rx_free an SKB is allocated for the slot. - * - * Also restock the Rx queue via il_rx_queue_restock. - * This is called as a scheduled work item (except for during initialization) - */ -static void -il4965_rx_allocate(struct il_priv *il, gfp_t priority) -{ - struct il_rx_queue *rxq = &il->rxq; - struct list_head *element; - struct il_rx_buf *rxb; - struct page *page; - dma_addr_t page_dma; - unsigned long flags; - gfp_t gfp_mask = priority; - - while (1) { - spin_lock_irqsave(&rxq->lock, flags); - if (list_empty(&rxq->rx_used)) { - spin_unlock_irqrestore(&rxq->lock, flags); - return; - } - spin_unlock_irqrestore(&rxq->lock, flags); - - if (rxq->free_count > RX_LOW_WATERMARK) - gfp_mask |= __GFP_NOWARN; - - if (il->hw_params.rx_page_order > 0) - gfp_mask |= __GFP_COMP; - - /* Alloc a new receive buffer */ - page = alloc_pages(gfp_mask, il->hw_params.rx_page_order); - if (!page) { - if (net_ratelimit()) - D_INFO("alloc_pages failed, " "order: %d\n", - il->hw_params.rx_page_order); - - if (rxq->free_count <= RX_LOW_WATERMARK && - net_ratelimit()) - IL_ERR("Failed to alloc_pages with %s. " - "Only %u free buffers remaining.\n", - priority == - GFP_ATOMIC ? "GFP_ATOMIC" : "GFP_KERNEL", - rxq->free_count); - /* We don't reschedule replenish work here -- we will - * call the restock method and if it still needs - * more buffers it will schedule replenish */ - return; - } - - /* Get physical address of the RB */ - page_dma = - pci_map_page(il->pci_dev, page, 0, - PAGE_SIZE << il->hw_params.rx_page_order, - PCI_DMA_FROMDEVICE); - if (unlikely(pci_dma_mapping_error(il->pci_dev, page_dma))) { - __free_pages(page, il->hw_params.rx_page_order); - break; - } - - spin_lock_irqsave(&rxq->lock, flags); - - if (list_empty(&rxq->rx_used)) { - spin_unlock_irqrestore(&rxq->lock, flags); - pci_unmap_page(il->pci_dev, page_dma, - PAGE_SIZE << il->hw_params.rx_page_order, - PCI_DMA_FROMDEVICE); - __free_pages(page, il->hw_params.rx_page_order); - return; - } - - element = rxq->rx_used.next; - rxb = list_entry(element, struct il_rx_buf, list); - list_del(element); - - BUG_ON(rxb->page); - - rxb->page = page; - rxb->page_dma = page_dma; - list_add_tail(&rxb->list, &rxq->rx_free); - rxq->free_count++; - il->alloc_rxb_page++; - - spin_unlock_irqrestore(&rxq->lock, flags); - } -} - -void -il4965_rx_replenish(struct il_priv *il) -{ - unsigned long flags; - - il4965_rx_allocate(il, GFP_KERNEL); - - spin_lock_irqsave(&il->lock, flags); - il4965_rx_queue_restock(il); - spin_unlock_irqrestore(&il->lock, flags); -} - -void -il4965_rx_replenish_now(struct il_priv *il) -{ - il4965_rx_allocate(il, GFP_ATOMIC); - - il4965_rx_queue_restock(il); -} - -/* Assumes that the skb field of the buffers in 'pool' is kept accurate. - * If an SKB has been detached, the POOL needs to have its SKB set to NULL - * This free routine walks the list of POOL entries and if SKB is set to - * non NULL it is unmapped and freed - */ -void -il4965_rx_queue_free(struct il_priv *il, struct il_rx_queue *rxq) -{ - int i; - for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) { - if (rxq->pool[i].page != NULL) { - pci_unmap_page(il->pci_dev, rxq->pool[i].page_dma, - PAGE_SIZE << il->hw_params.rx_page_order, - PCI_DMA_FROMDEVICE); - __il_free_pages(il, rxq->pool[i].page); - rxq->pool[i].page = NULL; - } - } - - dma_free_coherent(&il->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd, - rxq->bd_dma); - dma_free_coherent(&il->pci_dev->dev, sizeof(struct il_rb_status), - rxq->rb_stts, rxq->rb_stts_dma); - rxq->bd = NULL; - rxq->rb_stts = NULL; -} - -int -il4965_rxq_stop(struct il_priv *il) -{ - int ret; - - _il_wr(il, FH49_MEM_RCSR_CHNL0_CONFIG_REG, 0); - ret = _il_poll_bit(il, FH49_MEM_RSSR_RX_STATUS_REG, - FH49_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, - FH49_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, - 1000); - if (ret < 0) - IL_ERR("Can't stop Rx DMA.\n"); - - return 0; -} - -int -il4965_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band) -{ - int idx = 0; - int band_offset = 0; - - /* HT rate format: mac80211 wants an MCS number, which is just LSB */ - if (rate_n_flags & RATE_MCS_HT_MSK) { - idx = (rate_n_flags & 0xff); - return idx; - /* Legacy rate format, search for match in table */ - } else { - if (band == IEEE80211_BAND_5GHZ) - band_offset = IL_FIRST_OFDM_RATE; - for (idx = band_offset; idx < RATE_COUNT_LEGACY; idx++) - if (il_rates[idx].plcp == (rate_n_flags & 0xFF)) - return idx - band_offset; - } - - return -1; -} - -static int -il4965_calc_rssi(struct il_priv *il, struct il_rx_phy_res *rx_resp) -{ - /* data from PHY/DSP regarding signal strength, etc., - * contents are always there, not configurable by host. */ - struct il4965_rx_non_cfg_phy *ncphy = - (struct il4965_rx_non_cfg_phy *)rx_resp->non_cfg_phy_buf; - u32 agc = - (le16_to_cpu(ncphy->agc_info) & IL49_AGC_DB_MASK) >> - IL49_AGC_DB_POS; - - u32 valid_antennae = - (le16_to_cpu(rx_resp->phy_flags) & IL49_RX_PHY_FLAGS_ANTENNAE_MASK) - >> IL49_RX_PHY_FLAGS_ANTENNAE_OFFSET; - u8 max_rssi = 0; - u32 i; - - /* Find max rssi among 3 possible receivers. - * These values are measured by the digital signal processor (DSP). - * They should stay fairly constant even as the signal strength varies, - * if the radio's automatic gain control (AGC) is working right. - * AGC value (see below) will provide the "interesting" info. */ - for (i = 0; i < 3; i++) - if (valid_antennae & (1 << i)) - max_rssi = max(ncphy->rssi_info[i << 1], max_rssi); - - D_STATS("Rssi In A %d B %d C %d Max %d AGC dB %d\n", - ncphy->rssi_info[0], ncphy->rssi_info[2], ncphy->rssi_info[4], - max_rssi, agc); - - /* dBm = max_rssi dB - agc dB - constant. - * Higher AGC (higher radio gain) means lower signal. */ - return max_rssi - agc - IL4965_RSSI_OFFSET; -} - -static u32 -il4965_translate_rx_status(struct il_priv *il, u32 decrypt_in) -{ - u32 decrypt_out = 0; - - if ((decrypt_in & RX_RES_STATUS_STATION_FOUND) == - RX_RES_STATUS_STATION_FOUND) - decrypt_out |= - (RX_RES_STATUS_STATION_FOUND | - RX_RES_STATUS_NO_STATION_INFO_MISMATCH); - - decrypt_out |= (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK); - - /* packet was not encrypted */ - if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) == - RX_RES_STATUS_SEC_TYPE_NONE) - return decrypt_out; - - /* packet was encrypted with unknown alg */ - if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) == - RX_RES_STATUS_SEC_TYPE_ERR) - return decrypt_out; - - /* decryption was not done in HW */ - if ((decrypt_in & RX_MPDU_RES_STATUS_DEC_DONE_MSK) != - RX_MPDU_RES_STATUS_DEC_DONE_MSK) - return decrypt_out; - - switch (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) { - - case RX_RES_STATUS_SEC_TYPE_CCMP: - /* alg is CCM: check MIC only */ - if (!(decrypt_in & RX_MPDU_RES_STATUS_MIC_OK)) - /* Bad MIC */ - decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC; - else - decrypt_out |= RX_RES_STATUS_DECRYPT_OK; - - break; - - case RX_RES_STATUS_SEC_TYPE_TKIP: - if (!(decrypt_in & RX_MPDU_RES_STATUS_TTAK_OK)) { - /* Bad TTAK */ - decrypt_out |= RX_RES_STATUS_BAD_KEY_TTAK; - break; - } - /* fall through if TTAK OK */ - default: - if (!(decrypt_in & RX_MPDU_RES_STATUS_ICV_OK)) - decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC; - else - decrypt_out |= RX_RES_STATUS_DECRYPT_OK; - break; - } - - D_RX("decrypt_in:0x%x decrypt_out = 0x%x\n", decrypt_in, decrypt_out); - - return decrypt_out; -} - -#define SMALL_PACKET_SIZE 256 - -static void -il4965_pass_packet_to_mac80211(struct il_priv *il, struct ieee80211_hdr *hdr, - u32 len, u32 ampdu_status, struct il_rx_buf *rxb, - struct ieee80211_rx_status *stats) -{ - struct sk_buff *skb; - __le16 fc = hdr->frame_control; - - /* We only process data packets if the interface is open */ - if (unlikely(!il->is_open)) { - D_DROP("Dropping packet while interface is not open.\n"); - return; - } - - if (unlikely(test_bit(IL_STOP_REASON_PASSIVE, &il->stop_reason))) { - il_wake_queues_by_reason(il, IL_STOP_REASON_PASSIVE); - D_INFO("Woke queues - frame received on passive channel\n"); - } - - /* In case of HW accelerated crypto and bad decryption, drop */ - if (!il->cfg->mod_params->sw_crypto && - il_set_decrypted_flag(il, hdr, ampdu_status, stats)) - return; - - skb = dev_alloc_skb(SMALL_PACKET_SIZE); - if (!skb) { - IL_ERR("dev_alloc_skb failed\n"); - return; - } - - if (len <= SMALL_PACKET_SIZE) { - memcpy(skb_put(skb, len), hdr, len); - } else { - skb_add_rx_frag(skb, 0, rxb->page, (void *)hdr - rxb_addr(rxb), - len, PAGE_SIZE << il->hw_params.rx_page_order); - il->alloc_rxb_page--; - rxb->page = NULL; - } - - il_update_stats(il, false, fc, len); - memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats)); - - ieee80211_rx(il->hw, skb); -} - -/* Called for N_RX (legacy ABG frames), or - * N_RX_MPDU (HT high-throughput N frames). */ -static void -il4965_hdl_rx(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct ieee80211_hdr *header; - struct ieee80211_rx_status rx_status = {}; - struct il_rx_pkt *pkt = rxb_addr(rxb); - struct il_rx_phy_res *phy_res; - __le32 rx_pkt_status; - struct il_rx_mpdu_res_start *amsdu; - u32 len; - u32 ampdu_status; - u32 rate_n_flags; - - /** - * N_RX and N_RX_MPDU are handled differently. - * N_RX: physical layer info is in this buffer - * N_RX_MPDU: physical layer info was sent in separate - * command and cached in il->last_phy_res - * - * Here we set up local variables depending on which command is - * received. - */ - if (pkt->hdr.cmd == N_RX) { - phy_res = (struct il_rx_phy_res *)pkt->u.raw; - header = - (struct ieee80211_hdr *)(pkt->u.raw + sizeof(*phy_res) + - phy_res->cfg_phy_cnt); - - len = le16_to_cpu(phy_res->byte_count); - rx_pkt_status = - *(__le32 *) (pkt->u.raw + sizeof(*phy_res) + - phy_res->cfg_phy_cnt + len); - ampdu_status = le32_to_cpu(rx_pkt_status); - } else { - if (!il->_4965.last_phy_res_valid) { - IL_ERR("MPDU frame without cached PHY data\n"); - return; - } - phy_res = &il->_4965.last_phy_res; - amsdu = (struct il_rx_mpdu_res_start *)pkt->u.raw; - header = (struct ieee80211_hdr *)(pkt->u.raw + sizeof(*amsdu)); - len = le16_to_cpu(amsdu->byte_count); - rx_pkt_status = *(__le32 *) (pkt->u.raw + sizeof(*amsdu) + len); - ampdu_status = - il4965_translate_rx_status(il, le32_to_cpu(rx_pkt_status)); - } - - if ((unlikely(phy_res->cfg_phy_cnt > 20))) { - D_DROP("dsp size out of range [0,20]: %d\n", - phy_res->cfg_phy_cnt); - return; - } - - if (!(rx_pkt_status & RX_RES_STATUS_NO_CRC32_ERROR) || - !(rx_pkt_status & RX_RES_STATUS_NO_RXE_OVERFLOW)) { - D_RX("Bad CRC or FIFO: 0x%08X.\n", le32_to_cpu(rx_pkt_status)); - return; - } - - /* This will be used in several places later */ - rate_n_flags = le32_to_cpu(phy_res->rate_n_flags); - - /* rx_status carries information about the packet to mac80211 */ - rx_status.mactime = le64_to_cpu(phy_res->timestamp); - rx_status.band = - (phy_res-> - phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ? IEEE80211_BAND_2GHZ : - IEEE80211_BAND_5GHZ; - rx_status.freq = - ieee80211_channel_to_frequency(le16_to_cpu(phy_res->channel), - rx_status.band); - rx_status.rate_idx = - il4965_hwrate_to_mac80211_idx(rate_n_flags, rx_status.band); - rx_status.flag = 0; - - /* TSF isn't reliable. In order to allow smooth user experience, - * this W/A doesn't propagate it to the mac80211 */ - /*rx_status.flag |= RX_FLAG_MACTIME_START; */ - - il->ucode_beacon_time = le32_to_cpu(phy_res->beacon_time_stamp); - - /* Find max signal strength (dBm) among 3 antenna/receiver chains */ - rx_status.signal = il4965_calc_rssi(il, phy_res); - - D_STATS("Rssi %d, TSF %llu\n", rx_status.signal, - (unsigned long long)rx_status.mactime); - - /* - * "antenna number" - * - * It seems that the antenna field in the phy flags value - * is actually a bit field. This is undefined by radiotap, - * it wants an actual antenna number but I always get "7" - * for most legacy frames I receive indicating that the - * same frame was received on all three RX chains. - * - * I think this field should be removed in favor of a - * new 802.11n radiotap field "RX chains" that is defined - * as a bitmask. - */ - rx_status.antenna = - (le16_to_cpu(phy_res->phy_flags) & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> - RX_RES_PHY_FLAGS_ANTENNA_POS; - - /* set the preamble flag if appropriate */ - if (phy_res->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK) - rx_status.flag |= RX_FLAG_SHORTPRE; - - /* Set up the HT phy flags */ - if (rate_n_flags & RATE_MCS_HT_MSK) - rx_status.flag |= RX_FLAG_HT; - if (rate_n_flags & RATE_MCS_HT40_MSK) - rx_status.flag |= RX_FLAG_40MHZ; - if (rate_n_flags & RATE_MCS_SGI_MSK) - rx_status.flag |= RX_FLAG_SHORT_GI; - - if (phy_res->phy_flags & RX_RES_PHY_FLAGS_AGG_MSK) { - /* We know which subframes of an A-MPDU belong - * together since we get a single PHY response - * from the firmware for all of them. - */ - - rx_status.flag |= RX_FLAG_AMPDU_DETAILS; - rx_status.ampdu_reference = il->_4965.ampdu_ref; - } - - il4965_pass_packet_to_mac80211(il, header, len, ampdu_status, rxb, - &rx_status); -} - -/* Cache phy data (Rx signal strength, etc) for HT frame (N_RX_PHY). - * This will be used later in il_hdl_rx() for N_RX_MPDU. */ -static void -il4965_hdl_rx_phy(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - il->_4965.last_phy_res_valid = true; - il->_4965.ampdu_ref++; - memcpy(&il->_4965.last_phy_res, pkt->u.raw, - sizeof(struct il_rx_phy_res)); -} - -static int -il4965_get_channels_for_scan(struct il_priv *il, struct ieee80211_vif *vif, - enum ieee80211_band band, u8 is_active, - u8 n_probes, struct il_scan_channel *scan_ch) -{ - struct ieee80211_channel *chan; - const struct ieee80211_supported_band *sband; - const struct il_channel_info *ch_info; - u16 passive_dwell = 0; - u16 active_dwell = 0; - int added, i; - u16 channel; - - sband = il_get_hw_mode(il, band); - if (!sband) - return 0; - - active_dwell = il_get_active_dwell_time(il, band, n_probes); - passive_dwell = il_get_passive_dwell_time(il, band, vif); - - if (passive_dwell <= active_dwell) - passive_dwell = active_dwell + 1; - - for (i = 0, added = 0; i < il->scan_request->n_channels; i++) { - chan = il->scan_request->channels[i]; - - if (chan->band != band) - continue; - - channel = chan->hw_value; - scan_ch->channel = cpu_to_le16(channel); - - ch_info = il_get_channel_info(il, band, channel); - if (!il_is_channel_valid(ch_info)) { - D_SCAN("Channel %d is INVALID for this band.\n", - channel); - continue; - } - - if (!is_active || il_is_channel_passive(ch_info) || - (chan->flags & IEEE80211_CHAN_NO_IR)) - scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE; - else - scan_ch->type = SCAN_CHANNEL_TYPE_ACTIVE; - - if (n_probes) - scan_ch->type |= IL_SCAN_PROBE_MASK(n_probes); - - scan_ch->active_dwell = cpu_to_le16(active_dwell); - scan_ch->passive_dwell = cpu_to_le16(passive_dwell); - - /* Set txpower levels to defaults */ - scan_ch->dsp_atten = 110; - - /* NOTE: if we were doing 6Mb OFDM for scans we'd use - * power level: - * scan_ch->tx_gain = ((1 << 5) | (2 << 3)) | 3; - */ - if (band == IEEE80211_BAND_5GHZ) - scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3; - else - scan_ch->tx_gain = ((1 << 5) | (5 << 3)); - - D_SCAN("Scanning ch=%d prob=0x%X [%s %d]\n", channel, - le32_to_cpu(scan_ch->type), - (scan_ch-> - type & SCAN_CHANNEL_TYPE_ACTIVE) ? "ACTIVE" : "PASSIVE", - (scan_ch-> - type & SCAN_CHANNEL_TYPE_ACTIVE) ? active_dwell : - passive_dwell); - - scan_ch++; - added++; - } - - D_SCAN("total channels to scan %d\n", added); - return added; -} - -static void -il4965_toggle_tx_ant(struct il_priv *il, u8 *ant, u8 valid) -{ - int i; - u8 ind = *ant; - - for (i = 0; i < RATE_ANT_NUM - 1; i++) { - ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0; - if (valid & BIT(ind)) { - *ant = ind; - return; - } - } -} - -int -il4965_request_scan(struct il_priv *il, struct ieee80211_vif *vif) -{ - struct il_host_cmd cmd = { - .id = C_SCAN, - .len = sizeof(struct il_scan_cmd), - .flags = CMD_SIZE_HUGE, - }; - struct il_scan_cmd *scan; - u32 rate_flags = 0; - u16 cmd_len; - u16 rx_chain = 0; - enum ieee80211_band band; - u8 n_probes = 0; - u8 rx_ant = il->hw_params.valid_rx_ant; - u8 rate; - bool is_active = false; - int chan_mod; - u8 active_chains; - u8 scan_tx_antennas = il->hw_params.valid_tx_ant; - int ret; - - lockdep_assert_held(&il->mutex); - - if (!il->scan_cmd) { - il->scan_cmd = - kmalloc(sizeof(struct il_scan_cmd) + IL_MAX_SCAN_SIZE, - GFP_KERNEL); - if (!il->scan_cmd) { - D_SCAN("fail to allocate memory for scan\n"); - return -ENOMEM; - } - } - scan = il->scan_cmd; - memset(scan, 0, sizeof(struct il_scan_cmd) + IL_MAX_SCAN_SIZE); - - scan->quiet_plcp_th = IL_PLCP_QUIET_THRESH; - scan->quiet_time = IL_ACTIVE_QUIET_TIME; - - if (il_is_any_associated(il)) { - u16 interval; - u32 extra; - u32 suspend_time = 100; - u32 scan_suspend_time = 100; - - D_INFO("Scanning while associated...\n"); - interval = vif->bss_conf.beacon_int; - - scan->suspend_time = 0; - scan->max_out_time = cpu_to_le32(200 * 1024); - if (!interval) - interval = suspend_time; - - extra = (suspend_time / interval) << 22; - scan_suspend_time = - (extra | ((suspend_time % interval) * 1024)); - scan->suspend_time = cpu_to_le32(scan_suspend_time); - D_SCAN("suspend_time 0x%X beacon interval %d\n", - scan_suspend_time, interval); - } - - if (il->scan_request->n_ssids) { - int i, p = 0; - D_SCAN("Kicking off active scan\n"); - for (i = 0; i < il->scan_request->n_ssids; i++) { - /* always does wildcard anyway */ - if (!il->scan_request->ssids[i].ssid_len) - continue; - scan->direct_scan[p].id = WLAN_EID_SSID; - scan->direct_scan[p].len = - il->scan_request->ssids[i].ssid_len; - memcpy(scan->direct_scan[p].ssid, - il->scan_request->ssids[i].ssid, - il->scan_request->ssids[i].ssid_len); - n_probes++; - p++; - } - is_active = true; - } else - D_SCAN("Start passive scan.\n"); - - scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK; - scan->tx_cmd.sta_id = il->hw_params.bcast_id; - scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; - - switch (il->scan_band) { - case IEEE80211_BAND_2GHZ: - scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK; - chan_mod = - le32_to_cpu(il->active.flags & RXON_FLG_CHANNEL_MODE_MSK) >> - RXON_FLG_CHANNEL_MODE_POS; - if (chan_mod == CHANNEL_MODE_PURE_40) { - rate = RATE_6M_PLCP; - } else { - rate = RATE_1M_PLCP; - rate_flags = RATE_MCS_CCK_MSK; - } - break; - case IEEE80211_BAND_5GHZ: - rate = RATE_6M_PLCP; - break; - default: - IL_WARN("Invalid scan band\n"); - return -EIO; - } - - /* - * If active scanning is requested but a certain channel is - * marked passive, we can do active scanning if we detect - * transmissions. - * - * There is an issue with some firmware versions that triggers - * a sysassert on a "good CRC threshold" of zero (== disabled), - * on a radar channel even though this means that we should NOT - * send probes. - * - * The "good CRC threshold" is the number of frames that we - * need to receive during our dwell time on a channel before - * sending out probes -- setting this to a huge value will - * mean we never reach it, but at the same time work around - * the aforementioned issue. Thus use IL_GOOD_CRC_TH_NEVER - * here instead of IL_GOOD_CRC_TH_DISABLED. - */ - scan->good_CRC_th = - is_active ? IL_GOOD_CRC_TH_DEFAULT : IL_GOOD_CRC_TH_NEVER; - - band = il->scan_band; - - if (il->cfg->scan_rx_antennas[band]) - rx_ant = il->cfg->scan_rx_antennas[band]; - - il4965_toggle_tx_ant(il, &il->scan_tx_ant[band], scan_tx_antennas); - rate_flags |= BIT(il->scan_tx_ant[band]) << RATE_MCS_ANT_POS; - scan->tx_cmd.rate_n_flags = cpu_to_le32(rate | rate_flags); - - /* In power save mode use one chain, otherwise use all chains */ - if (test_bit(S_POWER_PMI, &il->status)) { - /* rx_ant has been set to all valid chains previously */ - active_chains = - rx_ant & ((u8) (il->chain_noise_data.active_chains)); - if (!active_chains) - active_chains = rx_ant; - - D_SCAN("chain_noise_data.active_chains: %u\n", - il->chain_noise_data.active_chains); - - rx_ant = il4965_first_antenna(active_chains); - } - - /* MIMO is not used here, but value is required */ - rx_chain |= il->hw_params.valid_rx_ant << RXON_RX_CHAIN_VALID_POS; - rx_chain |= rx_ant << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS; - rx_chain |= rx_ant << RXON_RX_CHAIN_FORCE_SEL_POS; - rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS; - scan->rx_chain = cpu_to_le16(rx_chain); - - cmd_len = - il_fill_probe_req(il, (struct ieee80211_mgmt *)scan->data, - vif->addr, il->scan_request->ie, - il->scan_request->ie_len, - IL_MAX_SCAN_SIZE - sizeof(*scan)); - scan->tx_cmd.len = cpu_to_le16(cmd_len); - - scan->filter_flags |= - (RXON_FILTER_ACCEPT_GRP_MSK | RXON_FILTER_BCON_AWARE_MSK); - - scan->channel_count = - il4965_get_channels_for_scan(il, vif, band, is_active, n_probes, - (void *)&scan->data[cmd_len]); - if (scan->channel_count == 0) { - D_SCAN("channel count %d\n", scan->channel_count); - return -EIO; - } - - cmd.len += - le16_to_cpu(scan->tx_cmd.len) + - scan->channel_count * sizeof(struct il_scan_channel); - cmd.data = scan; - scan->len = cpu_to_le16(cmd.len); - - set_bit(S_SCAN_HW, &il->status); - - ret = il_send_cmd_sync(il, &cmd); - if (ret) - clear_bit(S_SCAN_HW, &il->status); - - return ret; -} - -int -il4965_manage_ibss_station(struct il_priv *il, struct ieee80211_vif *vif, - bool add) -{ - struct il_vif_priv *vif_priv = (void *)vif->drv_priv; - - if (add) - return il4965_add_bssid_station(il, vif->bss_conf.bssid, - &vif_priv->ibss_bssid_sta_id); - return il_remove_station(il, vif_priv->ibss_bssid_sta_id, - vif->bss_conf.bssid); -} - -void -il4965_free_tfds_in_queue(struct il_priv *il, int sta_id, int tid, int freed) -{ - lockdep_assert_held(&il->sta_lock); - - if (il->stations[sta_id].tid[tid].tfds_in_queue >= freed) - il->stations[sta_id].tid[tid].tfds_in_queue -= freed; - else { - D_TX("free more than tfds_in_queue (%u:%d)\n", - il->stations[sta_id].tid[tid].tfds_in_queue, freed); - il->stations[sta_id].tid[tid].tfds_in_queue = 0; - } -} - -#define IL_TX_QUEUE_MSK 0xfffff - -static bool -il4965_is_single_rx_stream(struct il_priv *il) -{ - return il->current_ht_config.smps == IEEE80211_SMPS_STATIC || - il->current_ht_config.single_chain_sufficient; -} - -#define IL_NUM_RX_CHAINS_MULTIPLE 3 -#define IL_NUM_RX_CHAINS_SINGLE 2 -#define IL_NUM_IDLE_CHAINS_DUAL 2 -#define IL_NUM_IDLE_CHAINS_SINGLE 1 - -/* - * Determine how many receiver/antenna chains to use. - * - * More provides better reception via diversity. Fewer saves power - * at the expense of throughput, but only when not in powersave to - * start with. - * - * MIMO (dual stream) requires at least 2, but works better with 3. - * This does not determine *which* chains to use, just how many. - */ -static int -il4965_get_active_rx_chain_count(struct il_priv *il) -{ - /* # of Rx chains to use when expecting MIMO. */ - if (il4965_is_single_rx_stream(il)) - return IL_NUM_RX_CHAINS_SINGLE; - else - return IL_NUM_RX_CHAINS_MULTIPLE; -} - -/* - * When we are in power saving mode, unless device support spatial - * multiplexing power save, use the active count for rx chain count. - */ -static int -il4965_get_idle_rx_chain_count(struct il_priv *il, int active_cnt) -{ - /* # Rx chains when idling, depending on SMPS mode */ - switch (il->current_ht_config.smps) { - case IEEE80211_SMPS_STATIC: - case IEEE80211_SMPS_DYNAMIC: - return IL_NUM_IDLE_CHAINS_SINGLE; - case IEEE80211_SMPS_OFF: - return active_cnt; - default: - WARN(1, "invalid SMPS mode %d", il->current_ht_config.smps); - return active_cnt; - } -} - -/* up to 4 chains */ -static u8 -il4965_count_chain_bitmap(u32 chain_bitmap) -{ - u8 res; - res = (chain_bitmap & BIT(0)) >> 0; - res += (chain_bitmap & BIT(1)) >> 1; - res += (chain_bitmap & BIT(2)) >> 2; - res += (chain_bitmap & BIT(3)) >> 3; - return res; -} - -/** - * il4965_set_rxon_chain - Set up Rx chain usage in "staging" RXON image - * - * Selects how many and which Rx receivers/antennas/chains to use. - * This should not be used for scan command ... it puts data in wrong place. - */ -void -il4965_set_rxon_chain(struct il_priv *il) -{ - bool is_single = il4965_is_single_rx_stream(il); - bool is_cam = !test_bit(S_POWER_PMI, &il->status); - u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt; - u32 active_chains; - u16 rx_chain; - - /* Tell uCode which antennas are actually connected. - * Before first association, we assume all antennas are connected. - * Just after first association, il4965_chain_noise_calibration() - * checks which antennas actually *are* connected. */ - if (il->chain_noise_data.active_chains) - active_chains = il->chain_noise_data.active_chains; - else - active_chains = il->hw_params.valid_rx_ant; - - rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS; - - /* How many receivers should we use? */ - active_rx_cnt = il4965_get_active_rx_chain_count(il); - idle_rx_cnt = il4965_get_idle_rx_chain_count(il, active_rx_cnt); - - /* correct rx chain count according hw settings - * and chain noise calibration - */ - valid_rx_cnt = il4965_count_chain_bitmap(active_chains); - if (valid_rx_cnt < active_rx_cnt) - active_rx_cnt = valid_rx_cnt; - - if (valid_rx_cnt < idle_rx_cnt) - idle_rx_cnt = valid_rx_cnt; - - rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS; - rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS; - - il->staging.rx_chain = cpu_to_le16(rx_chain); - - if (!is_single && active_rx_cnt >= IL_NUM_RX_CHAINS_SINGLE && is_cam) - il->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK; - else - il->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK; - - D_ASSOC("rx_chain=0x%X active=%d idle=%d\n", il->staging.rx_chain, - active_rx_cnt, idle_rx_cnt); - - WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 || - active_rx_cnt < idle_rx_cnt); -} - -static const char * -il4965_get_fh_string(int cmd) -{ - switch (cmd) { - IL_CMD(FH49_RSCSR_CHNL0_STTS_WPTR_REG); - IL_CMD(FH49_RSCSR_CHNL0_RBDCB_BASE_REG); - IL_CMD(FH49_RSCSR_CHNL0_WPTR); - IL_CMD(FH49_MEM_RCSR_CHNL0_CONFIG_REG); - IL_CMD(FH49_MEM_RSSR_SHARED_CTRL_REG); - IL_CMD(FH49_MEM_RSSR_RX_STATUS_REG); - IL_CMD(FH49_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV); - IL_CMD(FH49_TSSR_TX_STATUS_REG); - IL_CMD(FH49_TSSR_TX_ERROR_REG); - default: - return "UNKNOWN"; - } -} - -int -il4965_dump_fh(struct il_priv *il, char **buf, bool display) -{ - int i; -#ifdef CONFIG_IWLEGACY_DEBUG - int pos = 0; - size_t bufsz = 0; -#endif - static const u32 fh_tbl[] = { - FH49_RSCSR_CHNL0_STTS_WPTR_REG, - FH49_RSCSR_CHNL0_RBDCB_BASE_REG, - FH49_RSCSR_CHNL0_WPTR, - FH49_MEM_RCSR_CHNL0_CONFIG_REG, - FH49_MEM_RSSR_SHARED_CTRL_REG, - FH49_MEM_RSSR_RX_STATUS_REG, - FH49_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV, - FH49_TSSR_TX_STATUS_REG, - FH49_TSSR_TX_ERROR_REG - }; -#ifdef CONFIG_IWLEGACY_DEBUG - if (display) { - bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40; - *buf = kmalloc(bufsz, GFP_KERNEL); - if (!*buf) - return -ENOMEM; - pos += - scnprintf(*buf + pos, bufsz - pos, "FH register values:\n"); - for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) { - pos += - scnprintf(*buf + pos, bufsz - pos, - " %34s: 0X%08x\n", - il4965_get_fh_string(fh_tbl[i]), - il_rd(il, fh_tbl[i])); - } - return pos; - } -#endif - IL_ERR("FH register values:\n"); - for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) { - IL_ERR(" %34s: 0X%08x\n", il4965_get_fh_string(fh_tbl[i]), - il_rd(il, fh_tbl[i])); - } - return 0; -} - -static void -il4965_hdl_missed_beacon(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - struct il_missed_beacon_notif *missed_beacon; - - missed_beacon = &pkt->u.missed_beacon; - if (le32_to_cpu(missed_beacon->consecutive_missed_beacons) > - il->missed_beacon_threshold) { - D_CALIB("missed bcn cnsq %d totl %d rcd %d expctd %d\n", - le32_to_cpu(missed_beacon->consecutive_missed_beacons), - le32_to_cpu(missed_beacon->total_missed_becons), - le32_to_cpu(missed_beacon->num_recvd_beacons), - le32_to_cpu(missed_beacon->num_expected_beacons)); - if (!test_bit(S_SCANNING, &il->status)) - il4965_init_sensitivity(il); - } -} - -/* Calculate noise level, based on measurements during network silence just - * before arriving beacon. This measurement can be done only if we know - * exactly when to expect beacons, therefore only when we're associated. */ -static void -il4965_rx_calc_noise(struct il_priv *il) -{ - struct stats_rx_non_phy *rx_info; - int num_active_rx = 0; - int total_silence = 0; - int bcn_silence_a, bcn_silence_b, bcn_silence_c; - int last_rx_noise; - - rx_info = &(il->_4965.stats.rx.general); - bcn_silence_a = - le32_to_cpu(rx_info->beacon_silence_rssi_a) & IN_BAND_FILTER; - bcn_silence_b = - le32_to_cpu(rx_info->beacon_silence_rssi_b) & IN_BAND_FILTER; - bcn_silence_c = - le32_to_cpu(rx_info->beacon_silence_rssi_c) & IN_BAND_FILTER; - - if (bcn_silence_a) { - total_silence += bcn_silence_a; - num_active_rx++; - } - if (bcn_silence_b) { - total_silence += bcn_silence_b; - num_active_rx++; - } - if (bcn_silence_c) { - total_silence += bcn_silence_c; - num_active_rx++; - } - - /* Average among active antennas */ - if (num_active_rx) - last_rx_noise = (total_silence / num_active_rx) - 107; - else - last_rx_noise = IL_NOISE_MEAS_NOT_AVAILABLE; - - D_CALIB("inband silence a %u, b %u, c %u, dBm %d\n", bcn_silence_a, - bcn_silence_b, bcn_silence_c, last_rx_noise); -} - -#ifdef CONFIG_IWLEGACY_DEBUGFS -/* - * based on the assumption of all stats counter are in DWORD - * FIXME: This function is for debugging, do not deal with - * the case of counters roll-over. - */ -static void -il4965_accumulative_stats(struct il_priv *il, __le32 * stats) -{ - int i, size; - __le32 *prev_stats; - u32 *accum_stats; - u32 *delta, *max_delta; - struct stats_general_common *general, *accum_general; - struct stats_tx *tx, *accum_tx; - - prev_stats = (__le32 *) &il->_4965.stats; - accum_stats = (u32 *) &il->_4965.accum_stats; - size = sizeof(struct il_notif_stats); - general = &il->_4965.stats.general.common; - accum_general = &il->_4965.accum_stats.general.common; - tx = &il->_4965.stats.tx; - accum_tx = &il->_4965.accum_stats.tx; - delta = (u32 *) &il->_4965.delta_stats; - max_delta = (u32 *) &il->_4965.max_delta; - - for (i = sizeof(__le32); i < size; - i += - sizeof(__le32), stats++, prev_stats++, delta++, max_delta++, - accum_stats++) { - if (le32_to_cpu(*stats) > le32_to_cpu(*prev_stats)) { - *delta = - (le32_to_cpu(*stats) - le32_to_cpu(*prev_stats)); - *accum_stats += *delta; - if (*delta > *max_delta) - *max_delta = *delta; - } - } - - /* reset accumulative stats for "no-counter" type stats */ - accum_general->temperature = general->temperature; - accum_general->ttl_timestamp = general->ttl_timestamp; -} -#endif - -static void -il4965_hdl_stats(struct il_priv *il, struct il_rx_buf *rxb) -{ - const int recalib_seconds = 60; - bool change; - struct il_rx_pkt *pkt = rxb_addr(rxb); - - D_RX("Statistics notification received (%d vs %d).\n", - (int)sizeof(struct il_notif_stats), - le32_to_cpu(pkt->len_n_flags) & IL_RX_FRAME_SIZE_MSK); - - change = - ((il->_4965.stats.general.common.temperature != - pkt->u.stats.general.common.temperature) || - ((il->_4965.stats.flag & STATS_REPLY_FLG_HT40_MODE_MSK) != - (pkt->u.stats.flag & STATS_REPLY_FLG_HT40_MODE_MSK))); -#ifdef CONFIG_IWLEGACY_DEBUGFS - il4965_accumulative_stats(il, (__le32 *) &pkt->u.stats); -#endif - - /* TODO: reading some of stats is unneeded */ - memcpy(&il->_4965.stats, &pkt->u.stats, sizeof(il->_4965.stats)); - - set_bit(S_STATS, &il->status); - - /* - * Reschedule the stats timer to occur in recalib_seconds to ensure - * we get a thermal update even if the uCode doesn't give us one - */ - mod_timer(&il->stats_periodic, - jiffies + msecs_to_jiffies(recalib_seconds * 1000)); - - if (unlikely(!test_bit(S_SCANNING, &il->status)) && - (pkt->hdr.cmd == N_STATS)) { - il4965_rx_calc_noise(il); - queue_work(il->workqueue, &il->run_time_calib_work); - } - - if (change) - il4965_temperature_calib(il); -} - -static void -il4965_hdl_c_stats(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - - if (le32_to_cpu(pkt->u.stats.flag) & UCODE_STATS_CLEAR_MSK) { -#ifdef CONFIG_IWLEGACY_DEBUGFS - memset(&il->_4965.accum_stats, 0, - sizeof(struct il_notif_stats)); - memset(&il->_4965.delta_stats, 0, - sizeof(struct il_notif_stats)); - memset(&il->_4965.max_delta, 0, sizeof(struct il_notif_stats)); -#endif - D_RX("Statistics have been cleared\n"); - } - il4965_hdl_stats(il, rxb); -} - - -/* - * mac80211 queues, ACs, hardware queues, FIFOs. - * - * Cf. http://wireless.kernel.org/en/developers/Documentation/mac80211/queues - * - * Mac80211 uses the following numbers, which we get as from it - * by way of skb_get_queue_mapping(skb): - * - * VO 0 - * VI 1 - * BE 2 - * BK 3 - * - * - * Regular (not A-MPDU) frames are put into hardware queues corresponding - * to the FIFOs, see comments in iwl-prph.h. Aggregated frames get their - * own queue per aggregation session (RA/TID combination), such queues are - * set up to map into FIFOs too, for which we need an AC->FIFO mapping. In - * order to map frames to the right queue, we also need an AC->hw queue - * mapping. This is implemented here. - * - * Due to the way hw queues are set up (by the hw specific modules like - * 4965.c), the AC->hw queue mapping is the identity - * mapping. - */ - -static const u8 tid_to_ac[] = { - IEEE80211_AC_BE, - IEEE80211_AC_BK, - IEEE80211_AC_BK, - IEEE80211_AC_BE, - IEEE80211_AC_VI, - IEEE80211_AC_VI, - IEEE80211_AC_VO, - IEEE80211_AC_VO -}; - -static inline int -il4965_get_ac_from_tid(u16 tid) -{ - if (likely(tid < ARRAY_SIZE(tid_to_ac))) - return tid_to_ac[tid]; - - /* no support for TIDs 8-15 yet */ - return -EINVAL; -} - -static inline int -il4965_get_fifo_from_tid(u16 tid) -{ - const u8 ac_to_fifo[] = { - IL_TX_FIFO_VO, - IL_TX_FIFO_VI, - IL_TX_FIFO_BE, - IL_TX_FIFO_BK, - }; - - if (likely(tid < ARRAY_SIZE(tid_to_ac))) - return ac_to_fifo[tid_to_ac[tid]]; - - /* no support for TIDs 8-15 yet */ - return -EINVAL; -} - -/* - * handle build C_TX command notification. - */ -static void -il4965_tx_cmd_build_basic(struct il_priv *il, struct sk_buff *skb, - struct il_tx_cmd *tx_cmd, - struct ieee80211_tx_info *info, - struct ieee80211_hdr *hdr, u8 std_id) -{ - __le16 fc = hdr->frame_control; - __le32 tx_flags = tx_cmd->tx_flags; - - tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; - if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) { - tx_flags |= TX_CMD_FLG_ACK_MSK; - if (ieee80211_is_mgmt(fc)) - tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; - if (ieee80211_is_probe_resp(fc) && - !(le16_to_cpu(hdr->seq_ctrl) & 0xf)) - tx_flags |= TX_CMD_FLG_TSF_MSK; - } else { - tx_flags &= (~TX_CMD_FLG_ACK_MSK); - tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; - } - - if (ieee80211_is_back_req(fc)) - tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK; - - tx_cmd->sta_id = std_id; - if (ieee80211_has_morefrags(fc)) - tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK; - - if (ieee80211_is_data_qos(fc)) { - u8 *qc = ieee80211_get_qos_ctl(hdr); - tx_cmd->tid_tspec = qc[0] & 0xf; - tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; - } else { - tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; - } - - il_tx_cmd_protection(il, info, fc, &tx_flags); - - tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK); - if (ieee80211_is_mgmt(fc)) { - if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc)) - tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3); - else - tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2); - } else { - tx_cmd->timeout.pm_frame_timeout = 0; - } - - tx_cmd->driver_txop = 0; - tx_cmd->tx_flags = tx_flags; - tx_cmd->next_frame_len = 0; -} - -static void -il4965_tx_cmd_build_rate(struct il_priv *il, - struct il_tx_cmd *tx_cmd, - struct ieee80211_tx_info *info, - struct ieee80211_sta *sta, - __le16 fc) -{ - const u8 rts_retry_limit = 60; - u32 rate_flags; - int rate_idx; - u8 data_retry_limit; - u8 rate_plcp; - - /* Set retry limit on DATA packets and Probe Responses */ - if (ieee80211_is_probe_resp(fc)) - data_retry_limit = 3; - else - data_retry_limit = IL4965_DEFAULT_TX_RETRY; - tx_cmd->data_retry_limit = data_retry_limit; - /* Set retry limit on RTS packets */ - tx_cmd->rts_retry_limit = min(data_retry_limit, rts_retry_limit); - - /* DATA packets will use the uCode station table for rate/antenna - * selection */ - if (ieee80211_is_data(fc)) { - tx_cmd->initial_rate_idx = 0; - tx_cmd->tx_flags |= TX_CMD_FLG_STA_RATE_MSK; - return; - } - - /** - * If the current TX rate stored in mac80211 has the MCS bit set, it's - * not really a TX rate. Thus, we use the lowest supported rate for - * this band. Also use the lowest supported rate if the stored rate - * idx is invalid. - */ - rate_idx = info->control.rates[0].idx; - if ((info->control.rates[0].flags & IEEE80211_TX_RC_MCS) || rate_idx < 0 - || rate_idx > RATE_COUNT_LEGACY) - rate_idx = rate_lowest_index(&il->bands[info->band], sta); - /* For 5 GHZ band, remap mac80211 rate indices into driver indices */ - if (info->band == IEEE80211_BAND_5GHZ) - rate_idx += IL_FIRST_OFDM_RATE; - /* Get PLCP rate for tx_cmd->rate_n_flags */ - rate_plcp = il_rates[rate_idx].plcp; - /* Zero out flags for this packet */ - rate_flags = 0; - - /* Set CCK flag as needed */ - if (rate_idx >= IL_FIRST_CCK_RATE && rate_idx <= IL_LAST_CCK_RATE) - rate_flags |= RATE_MCS_CCK_MSK; - - /* Set up antennas */ - il4965_toggle_tx_ant(il, &il->mgmt_tx_ant, il->hw_params.valid_tx_ant); - rate_flags |= BIT(il->mgmt_tx_ant) << RATE_MCS_ANT_POS; - - /* Set the rate in the TX cmd */ - tx_cmd->rate_n_flags = cpu_to_le32(rate_plcp | rate_flags); -} - -static void -il4965_tx_cmd_build_hwcrypto(struct il_priv *il, struct ieee80211_tx_info *info, - struct il_tx_cmd *tx_cmd, struct sk_buff *skb_frag, - int sta_id) -{ - struct ieee80211_key_conf *keyconf = info->control.hw_key; - - switch (keyconf->cipher) { - case WLAN_CIPHER_SUITE_CCMP: - tx_cmd->sec_ctl = TX_CMD_SEC_CCM; - memcpy(tx_cmd->key, keyconf->key, keyconf->keylen); - if (info->flags & IEEE80211_TX_CTL_AMPDU) - tx_cmd->tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK; - D_TX("tx_cmd with AES hwcrypto\n"); - break; - - case WLAN_CIPHER_SUITE_TKIP: - tx_cmd->sec_ctl = TX_CMD_SEC_TKIP; - ieee80211_get_tkip_p2k(keyconf, skb_frag, tx_cmd->key); - D_TX("tx_cmd with tkip hwcrypto\n"); - break; - - case WLAN_CIPHER_SUITE_WEP104: - tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128; - /* fall through */ - case WLAN_CIPHER_SUITE_WEP40: - tx_cmd->sec_ctl |= - (TX_CMD_SEC_WEP | (keyconf->keyidx & TX_CMD_SEC_MSK) << - TX_CMD_SEC_SHIFT); - - memcpy(&tx_cmd->key[3], keyconf->key, keyconf->keylen); - - D_TX("Configuring packet for WEP encryption " "with key %d\n", - keyconf->keyidx); - break; - - default: - IL_ERR("Unknown encode cipher %x\n", keyconf->cipher); - break; - } -} - -/* - * start C_TX command process - */ -int -il4965_tx_skb(struct il_priv *il, - struct ieee80211_sta *sta, - struct sk_buff *skb) -{ - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; - struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); - struct il_station_priv *sta_priv = NULL; - struct il_tx_queue *txq; - struct il_queue *q; - struct il_device_cmd *out_cmd; - struct il_cmd_meta *out_meta; - struct il_tx_cmd *tx_cmd; - int txq_id; - dma_addr_t phys_addr; - dma_addr_t txcmd_phys; - dma_addr_t scratch_phys; - u16 len, firstlen, secondlen; - u16 seq_number = 0; - __le16 fc; - u8 hdr_len; - u8 sta_id; - u8 wait_write_ptr = 0; - u8 tid = 0; - u8 *qc = NULL; - unsigned long flags; - bool is_agg = false; - - spin_lock_irqsave(&il->lock, flags); - if (il_is_rfkill(il)) { - D_DROP("Dropping - RF KILL\n"); - goto drop_unlock; - } - - fc = hdr->frame_control; - -#ifdef CONFIG_IWLEGACY_DEBUG - if (ieee80211_is_auth(fc)) - D_TX("Sending AUTH frame\n"); - else if (ieee80211_is_assoc_req(fc)) - D_TX("Sending ASSOC frame\n"); - else if (ieee80211_is_reassoc_req(fc)) - D_TX("Sending REASSOC frame\n"); -#endif - - hdr_len = ieee80211_hdrlen(fc); - - /* For management frames use broadcast id to do not break aggregation */ - if (!ieee80211_is_data(fc)) - sta_id = il->hw_params.bcast_id; - else { - /* Find idx into station table for destination station */ - sta_id = il_sta_id_or_broadcast(il, sta); - - if (sta_id == IL_INVALID_STATION) { - D_DROP("Dropping - INVALID STATION: %pM\n", hdr->addr1); - goto drop_unlock; - } - } - - D_TX("station Id %d\n", sta_id); - - if (sta) - sta_priv = (void *)sta->drv_priv; - - if (sta_priv && sta_priv->asleep && - (info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER)) { - /* - * This sends an asynchronous command to the device, - * but we can rely on it being processed before the - * next frame is processed -- and the next frame to - * this station is the one that will consume this - * counter. - * For now set the counter to just 1 since we do not - * support uAPSD yet. - */ - il4965_sta_modify_sleep_tx_count(il, sta_id, 1); - } - - /* FIXME: remove me ? */ - WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM); - - /* Access category (AC) is also the queue number */ - txq_id = skb_get_queue_mapping(skb); - - /* irqs already disabled/saved above when locking il->lock */ - spin_lock(&il->sta_lock); - - if (ieee80211_is_data_qos(fc)) { - qc = ieee80211_get_qos_ctl(hdr); - tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; - if (WARN_ON_ONCE(tid >= MAX_TID_COUNT)) { - spin_unlock(&il->sta_lock); - goto drop_unlock; - } - seq_number = il->stations[sta_id].tid[tid].seq_number; - seq_number &= IEEE80211_SCTL_SEQ; - hdr->seq_ctrl = - hdr->seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG); - hdr->seq_ctrl |= cpu_to_le16(seq_number); - seq_number += 0x10; - /* aggregation is on for this <sta,tid> */ - if (info->flags & IEEE80211_TX_CTL_AMPDU && - il->stations[sta_id].tid[tid].agg.state == IL_AGG_ON) { - txq_id = il->stations[sta_id].tid[tid].agg.txq_id; - is_agg = true; - } - } - - txq = &il->txq[txq_id]; - q = &txq->q; - - if (unlikely(il_queue_space(q) < q->high_mark)) { - spin_unlock(&il->sta_lock); - goto drop_unlock; - } - - if (ieee80211_is_data_qos(fc)) { - il->stations[sta_id].tid[tid].tfds_in_queue++; - if (!ieee80211_has_morefrags(fc)) - il->stations[sta_id].tid[tid].seq_number = seq_number; - } - - spin_unlock(&il->sta_lock); - - txq->skbs[q->write_ptr] = skb; - - /* Set up first empty entry in queue's array of Tx/cmd buffers */ - out_cmd = txq->cmd[q->write_ptr]; - out_meta = &txq->meta[q->write_ptr]; - tx_cmd = &out_cmd->cmd.tx; - memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr)); - memset(tx_cmd, 0, sizeof(struct il_tx_cmd)); - - /* - * Set up the Tx-command (not MAC!) header. - * Store the chosen Tx queue and TFD idx within the sequence field; - * after Tx, uCode's Tx response will return this value so driver can - * locate the frame within the tx queue and do post-tx processing. - */ - out_cmd->hdr.cmd = C_TX; - out_cmd->hdr.sequence = - cpu_to_le16((u16) - (QUEUE_TO_SEQ(txq_id) | IDX_TO_SEQ(q->write_ptr))); - - /* Copy MAC header from skb into command buffer */ - memcpy(tx_cmd->hdr, hdr, hdr_len); - - /* Total # bytes to be transmitted */ - tx_cmd->len = cpu_to_le16((u16) skb->len); - - if (info->control.hw_key) - il4965_tx_cmd_build_hwcrypto(il, info, tx_cmd, skb, sta_id); - - /* TODO need this for burst mode later on */ - il4965_tx_cmd_build_basic(il, skb, tx_cmd, info, hdr, sta_id); - - il4965_tx_cmd_build_rate(il, tx_cmd, info, sta, fc); - - /* - * Use the first empty entry in this queue's command buffer array - * to contain the Tx command and MAC header concatenated together - * (payload data will be in another buffer). - * Size of this varies, due to varying MAC header length. - * If end is not dword aligned, we'll have 2 extra bytes at the end - * of the MAC header (device reads on dword boundaries). - * We'll tell device about this padding later. - */ - len = sizeof(struct il_tx_cmd) + sizeof(struct il_cmd_header) + hdr_len; - firstlen = (len + 3) & ~3; - - /* Tell NIC about any 2-byte padding after MAC header */ - if (firstlen != len) - tx_cmd->tx_flags |= TX_CMD_FLG_MH_PAD_MSK; - - /* Physical address of this Tx command's header (not MAC header!), - * within command buffer array. */ - txcmd_phys = - pci_map_single(il->pci_dev, &out_cmd->hdr, firstlen, - PCI_DMA_BIDIRECTIONAL); - if (unlikely(pci_dma_mapping_error(il->pci_dev, txcmd_phys))) - goto drop_unlock; - - /* Set up TFD's 2nd entry to point directly to remainder of skb, - * if any (802.11 null frames have no payload). */ - secondlen = skb->len - hdr_len; - if (secondlen > 0) { - phys_addr = - pci_map_single(il->pci_dev, skb->data + hdr_len, secondlen, - PCI_DMA_TODEVICE); - if (unlikely(pci_dma_mapping_error(il->pci_dev, phys_addr))) - goto drop_unlock; - } - - /* Add buffer containing Tx command and MAC(!) header to TFD's - * first entry */ - il->ops->txq_attach_buf_to_tfd(il, txq, txcmd_phys, firstlen, 1, 0); - dma_unmap_addr_set(out_meta, mapping, txcmd_phys); - dma_unmap_len_set(out_meta, len, firstlen); - if (secondlen) - il->ops->txq_attach_buf_to_tfd(il, txq, phys_addr, secondlen, - 0, 0); - - if (!ieee80211_has_morefrags(hdr->frame_control)) { - txq->need_update = 1; - } else { - wait_write_ptr = 1; - txq->need_update = 0; - } - - scratch_phys = - txcmd_phys + sizeof(struct il_cmd_header) + - offsetof(struct il_tx_cmd, scratch); - - /* take back ownership of DMA buffer to enable update */ - pci_dma_sync_single_for_cpu(il->pci_dev, txcmd_phys, firstlen, - PCI_DMA_BIDIRECTIONAL); - tx_cmd->dram_lsb_ptr = cpu_to_le32(scratch_phys); - tx_cmd->dram_msb_ptr = il_get_dma_hi_addr(scratch_phys); - - il_update_stats(il, true, fc, skb->len); - - D_TX("sequence nr = 0X%x\n", le16_to_cpu(out_cmd->hdr.sequence)); - D_TX("tx_flags = 0X%x\n", le32_to_cpu(tx_cmd->tx_flags)); - il_print_hex_dump(il, IL_DL_TX, (u8 *) tx_cmd, sizeof(*tx_cmd)); - il_print_hex_dump(il, IL_DL_TX, (u8 *) tx_cmd->hdr, hdr_len); - - /* Set up entry for this TFD in Tx byte-count array */ - if (info->flags & IEEE80211_TX_CTL_AMPDU) - il->ops->txq_update_byte_cnt_tbl(il, txq, le16_to_cpu(tx_cmd->len)); - - pci_dma_sync_single_for_device(il->pci_dev, txcmd_phys, firstlen, - PCI_DMA_BIDIRECTIONAL); - - /* Tell device the write idx *just past* this latest filled TFD */ - q->write_ptr = il_queue_inc_wrap(q->write_ptr, q->n_bd); - il_txq_update_write_ptr(il, txq); - spin_unlock_irqrestore(&il->lock, flags); - - /* - * At this point the frame is "transmitted" successfully - * and we will get a TX status notification eventually, - * regardless of the value of ret. "ret" only indicates - * whether or not we should update the write pointer. - */ - - /* - * Avoid atomic ops if it isn't an associated client. - * Also, if this is a packet for aggregation, don't - * increase the counter because the ucode will stop - * aggregation queues when their respective station - * goes to sleep. - */ - if (sta_priv && sta_priv->client && !is_agg) - atomic_inc(&sta_priv->pending_frames); - - if (il_queue_space(q) < q->high_mark && il->mac80211_registered) { - if (wait_write_ptr) { - spin_lock_irqsave(&il->lock, flags); - txq->need_update = 1; - il_txq_update_write_ptr(il, txq); - spin_unlock_irqrestore(&il->lock, flags); - } else { - il_stop_queue(il, txq); - } - } - - return 0; - -drop_unlock: - spin_unlock_irqrestore(&il->lock, flags); - return -1; -} - -static inline int -il4965_alloc_dma_ptr(struct il_priv *il, struct il_dma_ptr *ptr, size_t size) -{ - ptr->addr = dma_alloc_coherent(&il->pci_dev->dev, size, &ptr->dma, - GFP_KERNEL); - if (!ptr->addr) - return -ENOMEM; - ptr->size = size; - return 0; -} - -static inline void -il4965_free_dma_ptr(struct il_priv *il, struct il_dma_ptr *ptr) -{ - if (unlikely(!ptr->addr)) - return; - - dma_free_coherent(&il->pci_dev->dev, ptr->size, ptr->addr, ptr->dma); - memset(ptr, 0, sizeof(*ptr)); -} - -/** - * il4965_hw_txq_ctx_free - Free TXQ Context - * - * Destroy all TX DMA queues and structures - */ -void -il4965_hw_txq_ctx_free(struct il_priv *il) -{ - int txq_id; - - /* Tx queues */ - if (il->txq) { - for (txq_id = 0; txq_id < il->hw_params.max_txq_num; txq_id++) - if (txq_id == il->cmd_queue) - il_cmd_queue_free(il); - else - il_tx_queue_free(il, txq_id); - } - il4965_free_dma_ptr(il, &il->kw); - - il4965_free_dma_ptr(il, &il->scd_bc_tbls); - - /* free tx queue structure */ - il_free_txq_mem(il); -} - -/** - * il4965_txq_ctx_alloc - allocate TX queue context - * Allocate all Tx DMA structures and initialize them - * - * @param il - * @return error code - */ -int -il4965_txq_ctx_alloc(struct il_priv *il) -{ - int ret, txq_id; - unsigned long flags; - - /* Free all tx/cmd queues and keep-warm buffer */ - il4965_hw_txq_ctx_free(il); - - ret = - il4965_alloc_dma_ptr(il, &il->scd_bc_tbls, - il->hw_params.scd_bc_tbls_size); - if (ret) { - IL_ERR("Scheduler BC Table allocation failed\n"); - goto error_bc_tbls; - } - /* Alloc keep-warm buffer */ - ret = il4965_alloc_dma_ptr(il, &il->kw, IL_KW_SIZE); - if (ret) { - IL_ERR("Keep Warm allocation failed\n"); - goto error_kw; - } - - /* allocate tx queue structure */ - ret = il_alloc_txq_mem(il); - if (ret) - goto error; - - spin_lock_irqsave(&il->lock, flags); - - /* Turn off all Tx DMA fifos */ - il4965_txq_set_sched(il, 0); - - /* Tell NIC where to find the "keep warm" buffer */ - il_wr(il, FH49_KW_MEM_ADDR_REG, il->kw.dma >> 4); - - spin_unlock_irqrestore(&il->lock, flags); - - /* Alloc and init all Tx queues, including the command queue (#4/#9) */ - for (txq_id = 0; txq_id < il->hw_params.max_txq_num; txq_id++) { - ret = il_tx_queue_init(il, txq_id); - if (ret) { - IL_ERR("Tx %d queue init failed\n", txq_id); - goto error; - } - } - - return ret; - -error: - il4965_hw_txq_ctx_free(il); - il4965_free_dma_ptr(il, &il->kw); -error_kw: - il4965_free_dma_ptr(il, &il->scd_bc_tbls); -error_bc_tbls: - return ret; -} - -void -il4965_txq_ctx_reset(struct il_priv *il) -{ - int txq_id; - unsigned long flags; - - spin_lock_irqsave(&il->lock, flags); - - /* Turn off all Tx DMA fifos */ - il4965_txq_set_sched(il, 0); - /* Tell NIC where to find the "keep warm" buffer */ - il_wr(il, FH49_KW_MEM_ADDR_REG, il->kw.dma >> 4); - - spin_unlock_irqrestore(&il->lock, flags); - - /* Alloc and init all Tx queues, including the command queue (#4) */ - for (txq_id = 0; txq_id < il->hw_params.max_txq_num; txq_id++) - il_tx_queue_reset(il, txq_id); -} - -static void -il4965_txq_ctx_unmap(struct il_priv *il) -{ - int txq_id; - - if (!il->txq) - return; - - /* Unmap DMA from host system and free skb's */ - for (txq_id = 0; txq_id < il->hw_params.max_txq_num; txq_id++) - if (txq_id == il->cmd_queue) - il_cmd_queue_unmap(il); - else - il_tx_queue_unmap(il, txq_id); -} - -/** - * il4965_txq_ctx_stop - Stop all Tx DMA channels - */ -void -il4965_txq_ctx_stop(struct il_priv *il) -{ - int ch, ret; - - _il_wr_prph(il, IL49_SCD_TXFACT, 0); - - /* Stop each Tx DMA channel, and wait for it to be idle */ - for (ch = 0; ch < il->hw_params.dma_chnl_num; ch++) { - _il_wr(il, FH49_TCSR_CHNL_TX_CONFIG_REG(ch), 0x0); - ret = - _il_poll_bit(il, FH49_TSSR_TX_STATUS_REG, - FH49_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(ch), - FH49_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(ch), - 1000); - if (ret < 0) - IL_ERR("Timeout stopping DMA channel %d [0x%08x]", - ch, _il_rd(il, FH49_TSSR_TX_STATUS_REG)); - } -} - -/* - * Find first available (lowest unused) Tx Queue, mark it "active". - * Called only when finding queue for aggregation. - * Should never return anything < 7, because they should already - * be in use as EDCA AC (0-3), Command (4), reserved (5, 6) - */ -static int -il4965_txq_ctx_activate_free(struct il_priv *il) -{ - int txq_id; - - for (txq_id = 0; txq_id < il->hw_params.max_txq_num; txq_id++) - if (!test_and_set_bit(txq_id, &il->txq_ctx_active_msk)) - return txq_id; - return -1; -} - -/** - * il4965_tx_queue_stop_scheduler - Stop queue, but keep configuration - */ -static void -il4965_tx_queue_stop_scheduler(struct il_priv *il, u16 txq_id) -{ - /* Simply stop the queue, but don't change any configuration; - * the SCD_ACT_EN bit is the write-enable mask for the ACTIVE bit. */ - il_wr_prph(il, IL49_SCD_QUEUE_STATUS_BITS(txq_id), - (0 << IL49_SCD_QUEUE_STTS_REG_POS_ACTIVE) | - (1 << IL49_SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN)); -} - -/** - * il4965_tx_queue_set_q2ratid - Map unique receiver/tid combination to a queue - */ -static int -il4965_tx_queue_set_q2ratid(struct il_priv *il, u16 ra_tid, u16 txq_id) -{ - u32 tbl_dw_addr; - u32 tbl_dw; - u16 scd_q2ratid; - - scd_q2ratid = ra_tid & IL_SCD_QUEUE_RA_TID_MAP_RATID_MSK; - - tbl_dw_addr = - il->scd_base_addr + IL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id); - - tbl_dw = il_read_targ_mem(il, tbl_dw_addr); - - if (txq_id & 0x1) - tbl_dw = (scd_q2ratid << 16) | (tbl_dw & 0x0000FFFF); - else - tbl_dw = scd_q2ratid | (tbl_dw & 0xFFFF0000); - - il_write_targ_mem(il, tbl_dw_addr, tbl_dw); - - return 0; -} - -/** - * il4965_tx_queue_agg_enable - Set up & enable aggregation for selected queue - * - * NOTE: txq_id must be greater than IL49_FIRST_AMPDU_QUEUE, - * i.e. it must be one of the higher queues used for aggregation - */ -static int -il4965_txq_agg_enable(struct il_priv *il, int txq_id, int tx_fifo, int sta_id, - int tid, u16 ssn_idx) -{ - unsigned long flags; - u16 ra_tid; - int ret; - - if ((IL49_FIRST_AMPDU_QUEUE > txq_id) || - (IL49_FIRST_AMPDU_QUEUE + - il->cfg->num_of_ampdu_queues <= txq_id)) { - IL_WARN("queue number out of range: %d, must be %d to %d\n", - txq_id, IL49_FIRST_AMPDU_QUEUE, - IL49_FIRST_AMPDU_QUEUE + - il->cfg->num_of_ampdu_queues - 1); - return -EINVAL; - } - - ra_tid = BUILD_RAxTID(sta_id, tid); - - /* Modify device's station table to Tx this TID */ - ret = il4965_sta_tx_modify_enable_tid(il, sta_id, tid); - if (ret) - return ret; - - spin_lock_irqsave(&il->lock, flags); - - /* Stop this Tx queue before configuring it */ - il4965_tx_queue_stop_scheduler(il, txq_id); - - /* Map receiver-address / traffic-ID to this queue */ - il4965_tx_queue_set_q2ratid(il, ra_tid, txq_id); - - /* Set this queue as a chain-building queue */ - il_set_bits_prph(il, IL49_SCD_QUEUECHAIN_SEL, (1 << txq_id)); - - /* Place first TFD at idx corresponding to start sequence number. - * Assumes that ssn_idx is valid (!= 0xFFF) */ - il->txq[txq_id].q.read_ptr = (ssn_idx & 0xff); - il->txq[txq_id].q.write_ptr = (ssn_idx & 0xff); - il4965_set_wr_ptrs(il, txq_id, ssn_idx); - - /* Set up Tx win size and frame limit for this queue */ - il_write_targ_mem(il, - il->scd_base_addr + - IL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id), - (SCD_WIN_SIZE << IL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) - & IL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK); - - il_write_targ_mem(il, - il->scd_base_addr + - IL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id) + sizeof(u32), - (SCD_FRAME_LIMIT << - IL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) & - IL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK); - - il_set_bits_prph(il, IL49_SCD_INTERRUPT_MASK, (1 << txq_id)); - - /* Set up Status area in SRAM, map to Tx DMA/FIFO, activate the queue */ - il4965_tx_queue_set_status(il, &il->txq[txq_id], tx_fifo, 1); - - spin_unlock_irqrestore(&il->lock, flags); - - return 0; -} - -int -il4965_tx_agg_start(struct il_priv *il, struct ieee80211_vif *vif, - struct ieee80211_sta *sta, u16 tid, u16 * ssn) -{ - int sta_id; - int tx_fifo; - int txq_id; - int ret; - unsigned long flags; - struct il_tid_data *tid_data; - - /* FIXME: warning if tx fifo not found ? */ - tx_fifo = il4965_get_fifo_from_tid(tid); - if (unlikely(tx_fifo < 0)) - return tx_fifo; - - D_HT("%s on ra = %pM tid = %d\n", __func__, sta->addr, tid); - - sta_id = il_sta_id(sta); - if (sta_id == IL_INVALID_STATION) { - IL_ERR("Start AGG on invalid station\n"); - return -ENXIO; - } - if (unlikely(tid >= MAX_TID_COUNT)) - return -EINVAL; - - if (il->stations[sta_id].tid[tid].agg.state != IL_AGG_OFF) { - IL_ERR("Start AGG when state is not IL_AGG_OFF !\n"); - return -ENXIO; - } - - txq_id = il4965_txq_ctx_activate_free(il); - if (txq_id == -1) { - IL_ERR("No free aggregation queue available\n"); - return -ENXIO; - } - - spin_lock_irqsave(&il->sta_lock, flags); - tid_data = &il->stations[sta_id].tid[tid]; - *ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); - tid_data->agg.txq_id = txq_id; - il_set_swq_id(&il->txq[txq_id], il4965_get_ac_from_tid(tid), txq_id); - spin_unlock_irqrestore(&il->sta_lock, flags); - - ret = il4965_txq_agg_enable(il, txq_id, tx_fifo, sta_id, tid, *ssn); - if (ret) - return ret; - - spin_lock_irqsave(&il->sta_lock, flags); - tid_data = &il->stations[sta_id].tid[tid]; - if (tid_data->tfds_in_queue == 0) { - D_HT("HW queue is empty\n"); - tid_data->agg.state = IL_AGG_ON; - ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); - } else { - D_HT("HW queue is NOT empty: %d packets in HW queue\n", - tid_data->tfds_in_queue); - tid_data->agg.state = IL_EMPTYING_HW_QUEUE_ADDBA; - } - spin_unlock_irqrestore(&il->sta_lock, flags); - return ret; -} - -/** - * txq_id must be greater than IL49_FIRST_AMPDU_QUEUE - * il->lock must be held by the caller - */ -static int -il4965_txq_agg_disable(struct il_priv *il, u16 txq_id, u16 ssn_idx, u8 tx_fifo) -{ - if ((IL49_FIRST_AMPDU_QUEUE > txq_id) || - (IL49_FIRST_AMPDU_QUEUE + - il->cfg->num_of_ampdu_queues <= txq_id)) { - IL_WARN("queue number out of range: %d, must be %d to %d\n", - txq_id, IL49_FIRST_AMPDU_QUEUE, - IL49_FIRST_AMPDU_QUEUE + - il->cfg->num_of_ampdu_queues - 1); - return -EINVAL; - } - - il4965_tx_queue_stop_scheduler(il, txq_id); - - il_clear_bits_prph(il, IL49_SCD_QUEUECHAIN_SEL, (1 << txq_id)); - - il->txq[txq_id].q.read_ptr = (ssn_idx & 0xff); - il->txq[txq_id].q.write_ptr = (ssn_idx & 0xff); - /* supposes that ssn_idx is valid (!= 0xFFF) */ - il4965_set_wr_ptrs(il, txq_id, ssn_idx); - - il_clear_bits_prph(il, IL49_SCD_INTERRUPT_MASK, (1 << txq_id)); - il_txq_ctx_deactivate(il, txq_id); - il4965_tx_queue_set_status(il, &il->txq[txq_id], tx_fifo, 0); - - return 0; -} - -int -il4965_tx_agg_stop(struct il_priv *il, struct ieee80211_vif *vif, - struct ieee80211_sta *sta, u16 tid) -{ - int tx_fifo_id, txq_id, sta_id, ssn; - struct il_tid_data *tid_data; - int write_ptr, read_ptr; - unsigned long flags; - - /* FIXME: warning if tx_fifo_id not found ? */ - tx_fifo_id = il4965_get_fifo_from_tid(tid); - if (unlikely(tx_fifo_id < 0)) - return tx_fifo_id; - - sta_id = il_sta_id(sta); - - if (sta_id == IL_INVALID_STATION) { - IL_ERR("Invalid station for AGG tid %d\n", tid); - return -ENXIO; - } - - spin_lock_irqsave(&il->sta_lock, flags); - - tid_data = &il->stations[sta_id].tid[tid]; - ssn = (tid_data->seq_number & IEEE80211_SCTL_SEQ) >> 4; - txq_id = tid_data->agg.txq_id; - - switch (il->stations[sta_id].tid[tid].agg.state) { - case IL_EMPTYING_HW_QUEUE_ADDBA: - /* - * This can happen if the peer stops aggregation - * again before we've had a chance to drain the - * queue we selected previously, i.e. before the - * session was really started completely. - */ - D_HT("AGG stop before setup done\n"); - goto turn_off; - case IL_AGG_ON: - break; - default: - IL_WARN("Stopping AGG while state not ON or starting\n"); - } - - write_ptr = il->txq[txq_id].q.write_ptr; - read_ptr = il->txq[txq_id].q.read_ptr; - - /* The queue is not empty */ - if (write_ptr != read_ptr) { - D_HT("Stopping a non empty AGG HW QUEUE\n"); - il->stations[sta_id].tid[tid].agg.state = - IL_EMPTYING_HW_QUEUE_DELBA; - spin_unlock_irqrestore(&il->sta_lock, flags); - return 0; - } - - D_HT("HW queue is empty\n"); -turn_off: - il->stations[sta_id].tid[tid].agg.state = IL_AGG_OFF; - - /* do not restore/save irqs */ - spin_unlock(&il->sta_lock); - spin_lock(&il->lock); - - /* - * the only reason this call can fail is queue number out of range, - * which can happen if uCode is reloaded and all the station - * information are lost. if it is outside the range, there is no need - * to deactivate the uCode queue, just return "success" to allow - * mac80211 to clean up it own data. - */ - il4965_txq_agg_disable(il, txq_id, ssn, tx_fifo_id); - spin_unlock_irqrestore(&il->lock, flags); - - ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); - - return 0; -} - -int -il4965_txq_check_empty(struct il_priv *il, int sta_id, u8 tid, int txq_id) -{ - struct il_queue *q = &il->txq[txq_id].q; - u8 *addr = il->stations[sta_id].sta.sta.addr; - struct il_tid_data *tid_data = &il->stations[sta_id].tid[tid]; - - lockdep_assert_held(&il->sta_lock); - - switch (il->stations[sta_id].tid[tid].agg.state) { - case IL_EMPTYING_HW_QUEUE_DELBA: - /* We are reclaiming the last packet of the */ - /* aggregated HW queue */ - if (txq_id == tid_data->agg.txq_id && - q->read_ptr == q->write_ptr) { - u16 ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); - int tx_fifo = il4965_get_fifo_from_tid(tid); - D_HT("HW queue empty: continue DELBA flow\n"); - il4965_txq_agg_disable(il, txq_id, ssn, tx_fifo); - tid_data->agg.state = IL_AGG_OFF; - ieee80211_stop_tx_ba_cb_irqsafe(il->vif, addr, tid); - } - break; - case IL_EMPTYING_HW_QUEUE_ADDBA: - /* We are reclaiming the last packet of the queue */ - if (tid_data->tfds_in_queue == 0) { - D_HT("HW queue empty: continue ADDBA flow\n"); - tid_data->agg.state = IL_AGG_ON; - ieee80211_start_tx_ba_cb_irqsafe(il->vif, addr, tid); - } - break; - } - - return 0; -} - -static void -il4965_non_agg_tx_status(struct il_priv *il, const u8 *addr1) -{ - struct ieee80211_sta *sta; - struct il_station_priv *sta_priv; - - rcu_read_lock(); - sta = ieee80211_find_sta(il->vif, addr1); - if (sta) { - sta_priv = (void *)sta->drv_priv; - /* avoid atomic ops if this isn't a client */ - if (sta_priv->client && - atomic_dec_return(&sta_priv->pending_frames) == 0) - ieee80211_sta_block_awake(il->hw, sta, false); - } - rcu_read_unlock(); -} - -static void -il4965_tx_status(struct il_priv *il, struct sk_buff *skb, bool is_agg) -{ - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; - - if (!is_agg) - il4965_non_agg_tx_status(il, hdr->addr1); - - ieee80211_tx_status_irqsafe(il->hw, skb); -} - -int -il4965_tx_queue_reclaim(struct il_priv *il, int txq_id, int idx) -{ - struct il_tx_queue *txq = &il->txq[txq_id]; - struct il_queue *q = &txq->q; - int nfreed = 0; - struct ieee80211_hdr *hdr; - struct sk_buff *skb; - - if (idx >= q->n_bd || il_queue_used(q, idx) == 0) { - IL_ERR("Read idx for DMA queue txq id (%d), idx %d, " - "is out of range [0-%d] %d %d.\n", txq_id, idx, q->n_bd, - q->write_ptr, q->read_ptr); - return 0; - } - - for (idx = il_queue_inc_wrap(idx, q->n_bd); q->read_ptr != idx; - q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd)) { - - skb = txq->skbs[txq->q.read_ptr]; - - if (WARN_ON_ONCE(skb == NULL)) - continue; - - hdr = (struct ieee80211_hdr *) skb->data; - if (ieee80211_is_data_qos(hdr->frame_control)) - nfreed++; - - il4965_tx_status(il, skb, txq_id >= IL4965_FIRST_AMPDU_QUEUE); - - txq->skbs[txq->q.read_ptr] = NULL; - il->ops->txq_free_tfd(il, txq); - } - return nfreed; -} - -/** - * il4965_tx_status_reply_compressed_ba - Update tx status from block-ack - * - * Go through block-ack's bitmap of ACK'd frames, update driver's record of - * ACK vs. not. This gets sent to mac80211, then to rate scaling algo. - */ -static int -il4965_tx_status_reply_compressed_ba(struct il_priv *il, struct il_ht_agg *agg, - struct il_compressed_ba_resp *ba_resp) -{ - int i, sh, ack; - u16 seq_ctl = le16_to_cpu(ba_resp->seq_ctl); - u16 scd_flow = le16_to_cpu(ba_resp->scd_flow); - int successes = 0; - struct ieee80211_tx_info *info; - u64 bitmap, sent_bitmap; - - if (unlikely(!agg->wait_for_ba)) { - if (unlikely(ba_resp->bitmap)) - IL_ERR("Received BA when not expected\n"); - return -EINVAL; - } - - /* Mark that the expected block-ack response arrived */ - agg->wait_for_ba = 0; - D_TX_REPLY("BA %d %d\n", agg->start_idx, ba_resp->seq_ctl); - - /* Calculate shift to align block-ack bits with our Tx win bits */ - sh = agg->start_idx - SEQ_TO_IDX(seq_ctl >> 4); - if (sh < 0) /* tbw something is wrong with indices */ - sh += 0x100; - - if (agg->frame_count > (64 - sh)) { - D_TX_REPLY("more frames than bitmap size"); - return -1; - } - - /* don't use 64-bit values for now */ - bitmap = le64_to_cpu(ba_resp->bitmap) >> sh; - - /* check for success or failure according to the - * transmitted bitmap and block-ack bitmap */ - sent_bitmap = bitmap & agg->bitmap; - - /* For each frame attempted in aggregation, - * update driver's record of tx frame's status. */ - i = 0; - while (sent_bitmap) { - ack = sent_bitmap & 1ULL; - successes += ack; - D_TX_REPLY("%s ON i=%d idx=%d raw=%d\n", ack ? "ACK" : "NACK", - i, (agg->start_idx + i) & 0xff, agg->start_idx + i); - sent_bitmap >>= 1; - ++i; - } - - D_TX_REPLY("Bitmap %llx\n", (unsigned long long)bitmap); - - info = IEEE80211_SKB_CB(il->txq[scd_flow].skbs[agg->start_idx]); - memset(&info->status, 0, sizeof(info->status)); - info->flags |= IEEE80211_TX_STAT_ACK; - info->flags |= IEEE80211_TX_STAT_AMPDU; - info->status.ampdu_ack_len = successes; - info->status.ampdu_len = agg->frame_count; - il4965_hwrate_to_tx_control(il, agg->rate_n_flags, info); - - return 0; -} - -static inline bool -il4965_is_tx_success(u32 status) -{ - status &= TX_STATUS_MSK; - return (status == TX_STATUS_SUCCESS || status == TX_STATUS_DIRECT_DONE); -} - -static u8 -il4965_find_station(struct il_priv *il, const u8 *addr) -{ - int i; - int start = 0; - int ret = IL_INVALID_STATION; - unsigned long flags; - - if (il->iw_mode == NL80211_IFTYPE_ADHOC) - start = IL_STA_ID; - - if (is_broadcast_ether_addr(addr)) - return il->hw_params.bcast_id; - - spin_lock_irqsave(&il->sta_lock, flags); - for (i = start; i < il->hw_params.max_stations; i++) - if (il->stations[i].used && - ether_addr_equal(il->stations[i].sta.sta.addr, addr)) { - ret = i; - goto out; - } - - D_ASSOC("can not find STA %pM total %d\n", addr, il->num_stations); - -out: - /* - * It may be possible that more commands interacting with stations - * arrive before we completed processing the adding of - * station - */ - if (ret != IL_INVALID_STATION && - (!(il->stations[ret].used & IL_STA_UCODE_ACTIVE) || - ((il->stations[ret].used & IL_STA_UCODE_ACTIVE) && - (il->stations[ret].used & IL_STA_UCODE_INPROGRESS)))) { - IL_ERR("Requested station info for sta %d before ready.\n", - ret); - ret = IL_INVALID_STATION; - } - spin_unlock_irqrestore(&il->sta_lock, flags); - return ret; -} - -static int -il4965_get_ra_sta_id(struct il_priv *il, struct ieee80211_hdr *hdr) -{ - if (il->iw_mode == NL80211_IFTYPE_STATION) - return IL_AP_ID; - else { - u8 *da = ieee80211_get_DA(hdr); - - return il4965_find_station(il, da); - } -} - -static inline u32 -il4965_get_scd_ssn(struct il4965_tx_resp *tx_resp) -{ - return le32_to_cpup(&tx_resp->u.status + - tx_resp->frame_count) & IEEE80211_MAX_SN; -} - -static inline u32 -il4965_tx_status_to_mac80211(u32 status) -{ - status &= TX_STATUS_MSK; - - switch (status) { - case TX_STATUS_SUCCESS: - case TX_STATUS_DIRECT_DONE: - return IEEE80211_TX_STAT_ACK; - case TX_STATUS_FAIL_DEST_PS: - return IEEE80211_TX_STAT_TX_FILTERED; - default: - return 0; - } -} - -/** - * il4965_tx_status_reply_tx - Handle Tx response for frames in aggregation queue - */ -static int -il4965_tx_status_reply_tx(struct il_priv *il, struct il_ht_agg *agg, - struct il4965_tx_resp *tx_resp, int txq_id, - u16 start_idx) -{ - u16 status; - struct agg_tx_status *frame_status = tx_resp->u.agg_status; - struct ieee80211_tx_info *info = NULL; - struct ieee80211_hdr *hdr = NULL; - u32 rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags); - int i, sh, idx; - u16 seq; - if (agg->wait_for_ba) - D_TX_REPLY("got tx response w/o block-ack\n"); - - agg->frame_count = tx_resp->frame_count; - agg->start_idx = start_idx; - agg->rate_n_flags = rate_n_flags; - agg->bitmap = 0; - - /* num frames attempted by Tx command */ - if (agg->frame_count == 1) { - /* Only one frame was attempted; no block-ack will arrive */ - status = le16_to_cpu(frame_status[0].status); - idx = start_idx; - - D_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n", - agg->frame_count, agg->start_idx, idx); - - info = IEEE80211_SKB_CB(il->txq[txq_id].skbs[idx]); - info->status.rates[0].count = tx_resp->failure_frame + 1; - info->flags &= ~IEEE80211_TX_CTL_AMPDU; - info->flags |= il4965_tx_status_to_mac80211(status); - il4965_hwrate_to_tx_control(il, rate_n_flags, info); - - D_TX_REPLY("1 Frame 0x%x failure :%d\n", status & 0xff, - tx_resp->failure_frame); - D_TX_REPLY("Rate Info rate_n_flags=%x\n", rate_n_flags); - - agg->wait_for_ba = 0; - } else { - /* Two or more frames were attempted; expect block-ack */ - u64 bitmap = 0; - int start = agg->start_idx; - struct sk_buff *skb; - - /* Construct bit-map of pending frames within Tx win */ - for (i = 0; i < agg->frame_count; i++) { - u16 sc; - status = le16_to_cpu(frame_status[i].status); - seq = le16_to_cpu(frame_status[i].sequence); - idx = SEQ_TO_IDX(seq); - txq_id = SEQ_TO_QUEUE(seq); - - if (status & - (AGG_TX_STATE_FEW_BYTES_MSK | - AGG_TX_STATE_ABORT_MSK)) - continue; - - D_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n", - agg->frame_count, txq_id, idx); - - skb = il->txq[txq_id].skbs[idx]; - if (WARN_ON_ONCE(skb == NULL)) - return -1; - hdr = (struct ieee80211_hdr *) skb->data; - - sc = le16_to_cpu(hdr->seq_ctrl); - if (idx != (IEEE80211_SEQ_TO_SN(sc) & 0xff)) { - IL_ERR("BUG_ON idx doesn't match seq control" - " idx=%d, seq_idx=%d, seq=%d\n", idx, - IEEE80211_SEQ_TO_SN(sc), hdr->seq_ctrl); - return -1; - } - - D_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n", i, idx, - IEEE80211_SEQ_TO_SN(sc)); - - sh = idx - start; - if (sh > 64) { - sh = (start - idx) + 0xff; - bitmap = bitmap << sh; - sh = 0; - start = idx; - } else if (sh < -64) - sh = 0xff - (start - idx); - else if (sh < 0) { - sh = start - idx; - start = idx; - bitmap = bitmap << sh; - sh = 0; - } - bitmap |= 1ULL << sh; - D_TX_REPLY("start=%d bitmap=0x%llx\n", start, - (unsigned long long)bitmap); - } - - agg->bitmap = bitmap; - agg->start_idx = start; - D_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n", - agg->frame_count, agg->start_idx, - (unsigned long long)agg->bitmap); - - if (bitmap) - agg->wait_for_ba = 1; - } - return 0; -} - -/** - * il4965_hdl_tx - Handle standard (non-aggregation) Tx response - */ -static void -il4965_hdl_tx(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - u16 sequence = le16_to_cpu(pkt->hdr.sequence); - int txq_id = SEQ_TO_QUEUE(sequence); - int idx = SEQ_TO_IDX(sequence); - struct il_tx_queue *txq = &il->txq[txq_id]; - struct sk_buff *skb; - struct ieee80211_hdr *hdr; - struct ieee80211_tx_info *info; - struct il4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0]; - u32 status = le32_to_cpu(tx_resp->u.status); - int uninitialized_var(tid); - int sta_id; - int freed; - u8 *qc = NULL; - unsigned long flags; - - if (idx >= txq->q.n_bd || il_queue_used(&txq->q, idx) == 0) { - IL_ERR("Read idx for DMA queue txq_id (%d) idx %d " - "is out of range [0-%d] %d %d\n", txq_id, idx, - txq->q.n_bd, txq->q.write_ptr, txq->q.read_ptr); - return; - } - - txq->time_stamp = jiffies; - - skb = txq->skbs[txq->q.read_ptr]; - info = IEEE80211_SKB_CB(skb); - memset(&info->status, 0, sizeof(info->status)); - - hdr = (struct ieee80211_hdr *) skb->data; - if (ieee80211_is_data_qos(hdr->frame_control)) { - qc = ieee80211_get_qos_ctl(hdr); - tid = qc[0] & 0xf; - } - - sta_id = il4965_get_ra_sta_id(il, hdr); - if (txq->sched_retry && unlikely(sta_id == IL_INVALID_STATION)) { - IL_ERR("Station not known\n"); - return; - } - - /* - * Firmware will not transmit frame on passive channel, if it not yet - * received some valid frame on that channel. When this error happen - * we have to wait until firmware will unblock itself i.e. when we - * note received beacon or other frame. We unblock queues in - * il4965_pass_packet_to_mac80211 or in il_mac_bss_info_changed. - */ - if (unlikely((status & TX_STATUS_MSK) == TX_STATUS_FAIL_PASSIVE_NO_RX) && - il->iw_mode == NL80211_IFTYPE_STATION) { - il_stop_queues_by_reason(il, IL_STOP_REASON_PASSIVE); - D_INFO("Stopped queues - RX waiting on passive channel\n"); - } - - spin_lock_irqsave(&il->sta_lock, flags); - if (txq->sched_retry) { - const u32 scd_ssn = il4965_get_scd_ssn(tx_resp); - struct il_ht_agg *agg = NULL; - WARN_ON(!qc); - - agg = &il->stations[sta_id].tid[tid].agg; - - il4965_tx_status_reply_tx(il, agg, tx_resp, txq_id, idx); - - /* check if BAR is needed */ - if (tx_resp->frame_count == 1 && - !il4965_is_tx_success(status)) - info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; - - if (txq->q.read_ptr != (scd_ssn & 0xff)) { - idx = il_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd); - D_TX_REPLY("Retry scheduler reclaim scd_ssn " - "%d idx %d\n", scd_ssn, idx); - freed = il4965_tx_queue_reclaim(il, txq_id, idx); - if (qc) - il4965_free_tfds_in_queue(il, sta_id, tid, - freed); - - if (il->mac80211_registered && - il_queue_space(&txq->q) > txq->q.low_mark && - agg->state != IL_EMPTYING_HW_QUEUE_DELBA) - il_wake_queue(il, txq); - } - } else { - info->status.rates[0].count = tx_resp->failure_frame + 1; - info->flags |= il4965_tx_status_to_mac80211(status); - il4965_hwrate_to_tx_control(il, - le32_to_cpu(tx_resp->rate_n_flags), - info); - - D_TX_REPLY("TXQ %d status %s (0x%08x) " - "rate_n_flags 0x%x retries %d\n", txq_id, - il4965_get_tx_fail_reason(status), status, - le32_to_cpu(tx_resp->rate_n_flags), - tx_resp->failure_frame); - - freed = il4965_tx_queue_reclaim(il, txq_id, idx); - if (qc && likely(sta_id != IL_INVALID_STATION)) - il4965_free_tfds_in_queue(il, sta_id, tid, freed); - else if (sta_id == IL_INVALID_STATION) - D_TX_REPLY("Station not known\n"); - - if (il->mac80211_registered && - il_queue_space(&txq->q) > txq->q.low_mark) - il_wake_queue(il, txq); - } - if (qc && likely(sta_id != IL_INVALID_STATION)) - il4965_txq_check_empty(il, sta_id, tid, txq_id); - - il4965_check_abort_status(il, tx_resp->frame_count, status); - - spin_unlock_irqrestore(&il->sta_lock, flags); -} - -/** - * translate ucode response to mac80211 tx status control values - */ -void -il4965_hwrate_to_tx_control(struct il_priv *il, u32 rate_n_flags, - struct ieee80211_tx_info *info) -{ - struct ieee80211_tx_rate *r = &info->status.rates[0]; - - info->status.antenna = - ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS); - if (rate_n_flags & RATE_MCS_HT_MSK) - r->flags |= IEEE80211_TX_RC_MCS; - if (rate_n_flags & RATE_MCS_GF_MSK) - r->flags |= IEEE80211_TX_RC_GREEN_FIELD; - if (rate_n_flags & RATE_MCS_HT40_MSK) - r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; - if (rate_n_flags & RATE_MCS_DUP_MSK) - r->flags |= IEEE80211_TX_RC_DUP_DATA; - if (rate_n_flags & RATE_MCS_SGI_MSK) - r->flags |= IEEE80211_TX_RC_SHORT_GI; - r->idx = il4965_hwrate_to_mac80211_idx(rate_n_flags, info->band); -} - -/** - * il4965_hdl_compressed_ba - Handler for N_COMPRESSED_BA - * - * Handles block-acknowledge notification from device, which reports success - * of frames sent via aggregation. - */ -static void -il4965_hdl_compressed_ba(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - struct il_compressed_ba_resp *ba_resp = &pkt->u.compressed_ba; - struct il_tx_queue *txq = NULL; - struct il_ht_agg *agg; - int idx; - int sta_id; - int tid; - unsigned long flags; - - /* "flow" corresponds to Tx queue */ - u16 scd_flow = le16_to_cpu(ba_resp->scd_flow); - - /* "ssn" is start of block-ack Tx win, corresponds to idx - * (in Tx queue's circular buffer) of first TFD/frame in win */ - u16 ba_resp_scd_ssn = le16_to_cpu(ba_resp->scd_ssn); - - if (scd_flow >= il->hw_params.max_txq_num) { - IL_ERR("BUG_ON scd_flow is bigger than number of queues\n"); - return; - } - - txq = &il->txq[scd_flow]; - sta_id = ba_resp->sta_id; - tid = ba_resp->tid; - agg = &il->stations[sta_id].tid[tid].agg; - if (unlikely(agg->txq_id != scd_flow)) { - /* - * FIXME: this is a uCode bug which need to be addressed, - * log the information and return for now! - * since it is possible happen very often and in order - * not to fill the syslog, don't enable the logging by default - */ - D_TX_REPLY("BA scd_flow %d does not match txq_id %d\n", - scd_flow, agg->txq_id); - return; - } - - /* Find idx just before block-ack win */ - idx = il_queue_dec_wrap(ba_resp_scd_ssn & 0xff, txq->q.n_bd); - - spin_lock_irqsave(&il->sta_lock, flags); - - D_TX_REPLY("N_COMPRESSED_BA [%d] Received from %pM, " "sta_id = %d\n", - agg->wait_for_ba, (u8 *) &ba_resp->sta_addr_lo32, - ba_resp->sta_id); - D_TX_REPLY("TID = %d, SeqCtl = %d, bitmap = 0x%llx," "scd_flow = " - "%d, scd_ssn = %d\n", ba_resp->tid, ba_resp->seq_ctl, - (unsigned long long)le64_to_cpu(ba_resp->bitmap), - ba_resp->scd_flow, ba_resp->scd_ssn); - D_TX_REPLY("DAT start_idx = %d, bitmap = 0x%llx\n", agg->start_idx, - (unsigned long long)agg->bitmap); - - /* Update driver's record of ACK vs. not for each frame in win */ - il4965_tx_status_reply_compressed_ba(il, agg, ba_resp); - - /* Release all TFDs before the SSN, i.e. all TFDs in front of - * block-ack win (we assume that they've been successfully - * transmitted ... if not, it's too late anyway). */ - if (txq->q.read_ptr != (ba_resp_scd_ssn & 0xff)) { - /* calculate mac80211 ampdu sw queue to wake */ - int freed = il4965_tx_queue_reclaim(il, scd_flow, idx); - il4965_free_tfds_in_queue(il, sta_id, tid, freed); - - if (il_queue_space(&txq->q) > txq->q.low_mark && - il->mac80211_registered && - agg->state != IL_EMPTYING_HW_QUEUE_DELBA) - il_wake_queue(il, txq); - - il4965_txq_check_empty(il, sta_id, tid, scd_flow); - } - - spin_unlock_irqrestore(&il->sta_lock, flags); -} - -#ifdef CONFIG_IWLEGACY_DEBUG -const char * -il4965_get_tx_fail_reason(u32 status) -{ -#define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x -#define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x - - switch (status & TX_STATUS_MSK) { - case TX_STATUS_SUCCESS: - return "SUCCESS"; - TX_STATUS_POSTPONE(DELAY); - TX_STATUS_POSTPONE(FEW_BYTES); - TX_STATUS_POSTPONE(QUIET_PERIOD); - TX_STATUS_POSTPONE(CALC_TTAK); - TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY); - TX_STATUS_FAIL(SHORT_LIMIT); - TX_STATUS_FAIL(LONG_LIMIT); - TX_STATUS_FAIL(FIFO_UNDERRUN); - TX_STATUS_FAIL(DRAIN_FLOW); - TX_STATUS_FAIL(RFKILL_FLUSH); - TX_STATUS_FAIL(LIFE_EXPIRE); - TX_STATUS_FAIL(DEST_PS); - TX_STATUS_FAIL(HOST_ABORTED); - TX_STATUS_FAIL(BT_RETRY); - TX_STATUS_FAIL(STA_INVALID); - TX_STATUS_FAIL(FRAG_DROPPED); - TX_STATUS_FAIL(TID_DISABLE); - TX_STATUS_FAIL(FIFO_FLUSHED); - TX_STATUS_FAIL(INSUFFICIENT_CF_POLL); - TX_STATUS_FAIL(PASSIVE_NO_RX); - TX_STATUS_FAIL(NO_BEACON_ON_RADAR); - } - - return "UNKNOWN"; - -#undef TX_STATUS_FAIL -#undef TX_STATUS_POSTPONE -} -#endif /* CONFIG_IWLEGACY_DEBUG */ - -static struct il_link_quality_cmd * -il4965_sta_alloc_lq(struct il_priv *il, u8 sta_id) -{ - int i, r; - struct il_link_quality_cmd *link_cmd; - u32 rate_flags = 0; - __le32 rate_n_flags; - - link_cmd = kzalloc(sizeof(struct il_link_quality_cmd), GFP_KERNEL); - if (!link_cmd) { - IL_ERR("Unable to allocate memory for LQ cmd.\n"); - return NULL; - } - /* Set up the rate scaling to start at selected rate, fall back - * all the way down to 1M in IEEE order, and then spin on 1M */ - if (il->band == IEEE80211_BAND_5GHZ) - r = RATE_6M_IDX; - else - r = RATE_1M_IDX; - - if (r >= IL_FIRST_CCK_RATE && r <= IL_LAST_CCK_RATE) - rate_flags |= RATE_MCS_CCK_MSK; - - rate_flags |= - il4965_first_antenna(il->hw_params. - valid_tx_ant) << RATE_MCS_ANT_POS; - rate_n_flags = cpu_to_le32(il_rates[r].plcp | rate_flags); - for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) - link_cmd->rs_table[i].rate_n_flags = rate_n_flags; - - link_cmd->general_params.single_stream_ant_msk = - il4965_first_antenna(il->hw_params.valid_tx_ant); - - link_cmd->general_params.dual_stream_ant_msk = - il->hw_params.valid_tx_ant & ~il4965_first_antenna(il->hw_params. - valid_tx_ant); - if (!link_cmd->general_params.dual_stream_ant_msk) { - link_cmd->general_params.dual_stream_ant_msk = ANT_AB; - } else if (il4965_num_of_ant(il->hw_params.valid_tx_ant) == 2) { - link_cmd->general_params.dual_stream_ant_msk = - il->hw_params.valid_tx_ant; - } - - link_cmd->agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF; - link_cmd->agg_params.agg_time_limit = - cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF); - - link_cmd->sta_id = sta_id; - - return link_cmd; -} - -/* - * il4965_add_bssid_station - Add the special IBSS BSSID station - * - * Function sleeps. - */ -int -il4965_add_bssid_station(struct il_priv *il, const u8 *addr, u8 *sta_id_r) -{ - int ret; - u8 sta_id; - struct il_link_quality_cmd *link_cmd; - unsigned long flags; - - if (sta_id_r) - *sta_id_r = IL_INVALID_STATION; - - ret = il_add_station_common(il, addr, 0, NULL, &sta_id); - if (ret) { - IL_ERR("Unable to add station %pM\n", addr); - return ret; - } - - if (sta_id_r) - *sta_id_r = sta_id; - - spin_lock_irqsave(&il->sta_lock, flags); - il->stations[sta_id].used |= IL_STA_LOCAL; - spin_unlock_irqrestore(&il->sta_lock, flags); - - /* Set up default rate scaling table in device's station table */ - link_cmd = il4965_sta_alloc_lq(il, sta_id); - if (!link_cmd) { - IL_ERR("Unable to initialize rate scaling for station %pM.\n", - addr); - return -ENOMEM; - } - - ret = il_send_lq_cmd(il, link_cmd, CMD_SYNC, true); - if (ret) - IL_ERR("Link quality command failed (%d)\n", ret); - - spin_lock_irqsave(&il->sta_lock, flags); - il->stations[sta_id].lq = link_cmd; - spin_unlock_irqrestore(&il->sta_lock, flags); - - return 0; -} - -static int -il4965_static_wepkey_cmd(struct il_priv *il, bool send_if_empty) -{ - int i; - u8 buff[sizeof(struct il_wep_cmd) + - sizeof(struct il_wep_key) * WEP_KEYS_MAX]; - struct il_wep_cmd *wep_cmd = (struct il_wep_cmd *)buff; - size_t cmd_size = sizeof(struct il_wep_cmd); - struct il_host_cmd cmd = { - .id = C_WEPKEY, - .data = wep_cmd, - .flags = CMD_SYNC, - }; - bool not_empty = false; - - might_sleep(); - - memset(wep_cmd, 0, - cmd_size + (sizeof(struct il_wep_key) * WEP_KEYS_MAX)); - - for (i = 0; i < WEP_KEYS_MAX; i++) { - u8 key_size = il->_4965.wep_keys[i].key_size; - - wep_cmd->key[i].key_idx = i; - if (key_size) { - wep_cmd->key[i].key_offset = i; - not_empty = true; - } else - wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET; - - wep_cmd->key[i].key_size = key_size; - memcpy(&wep_cmd->key[i].key[3], il->_4965.wep_keys[i].key, key_size); - } - - wep_cmd->global_key_type = WEP_KEY_WEP_TYPE; - wep_cmd->num_keys = WEP_KEYS_MAX; - - cmd_size += sizeof(struct il_wep_key) * WEP_KEYS_MAX; - cmd.len = cmd_size; - - if (not_empty || send_if_empty) - return il_send_cmd(il, &cmd); - else - return 0; -} - -int -il4965_restore_default_wep_keys(struct il_priv *il) -{ - lockdep_assert_held(&il->mutex); - - return il4965_static_wepkey_cmd(il, false); -} - -int -il4965_remove_default_wep_key(struct il_priv *il, - struct ieee80211_key_conf *keyconf) -{ - int ret; - int idx = keyconf->keyidx; - - lockdep_assert_held(&il->mutex); - - D_WEP("Removing default WEP key: idx=%d\n", idx); - - memset(&il->_4965.wep_keys[idx], 0, sizeof(struct il_wep_key)); - if (il_is_rfkill(il)) { - D_WEP("Not sending C_WEPKEY command due to RFKILL.\n"); - /* but keys in device are clear anyway so return success */ - return 0; - } - ret = il4965_static_wepkey_cmd(il, 1); - D_WEP("Remove default WEP key: idx=%d ret=%d\n", idx, ret); - - return ret; -} - -int -il4965_set_default_wep_key(struct il_priv *il, - struct ieee80211_key_conf *keyconf) -{ - int ret; - int len = keyconf->keylen; - int idx = keyconf->keyidx; - - lockdep_assert_held(&il->mutex); - - if (len != WEP_KEY_LEN_128 && len != WEP_KEY_LEN_64) { - D_WEP("Bad WEP key length %d\n", keyconf->keylen); - return -EINVAL; - } - - keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV; - keyconf->hw_key_idx = HW_KEY_DEFAULT; - il->stations[IL_AP_ID].keyinfo.cipher = keyconf->cipher; - - il->_4965.wep_keys[idx].key_size = len; - memcpy(&il->_4965.wep_keys[idx].key, &keyconf->key, len); - - ret = il4965_static_wepkey_cmd(il, false); - - D_WEP("Set default WEP key: len=%d idx=%d ret=%d\n", len, idx, ret); - return ret; -} - -static int -il4965_set_wep_dynamic_key_info(struct il_priv *il, - struct ieee80211_key_conf *keyconf, u8 sta_id) -{ - unsigned long flags; - __le16 key_flags = 0; - struct il_addsta_cmd sta_cmd; - - lockdep_assert_held(&il->mutex); - - keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV; - - key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK); - key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); - key_flags &= ~STA_KEY_FLG_INVALID; - - if (keyconf->keylen == WEP_KEY_LEN_128) - key_flags |= STA_KEY_FLG_KEY_SIZE_MSK; - - if (sta_id == il->hw_params.bcast_id) - key_flags |= STA_KEY_MULTICAST_MSK; - - spin_lock_irqsave(&il->sta_lock, flags); - - il->stations[sta_id].keyinfo.cipher = keyconf->cipher; - il->stations[sta_id].keyinfo.keylen = keyconf->keylen; - il->stations[sta_id].keyinfo.keyidx = keyconf->keyidx; - - memcpy(il->stations[sta_id].keyinfo.key, keyconf->key, keyconf->keylen); - - memcpy(&il->stations[sta_id].sta.key.key[3], keyconf->key, - keyconf->keylen); - - if ((il->stations[sta_id].sta.key. - key_flags & STA_KEY_FLG_ENCRYPT_MSK) == STA_KEY_FLG_NO_ENC) - il->stations[sta_id].sta.key.key_offset = - il_get_free_ucode_key_idx(il); - /* else, we are overriding an existing key => no need to allocated room - * in uCode. */ - - WARN(il->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET, - "no space for a new key"); - - il->stations[sta_id].sta.key.key_flags = key_flags; - il->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; - il->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; - - memcpy(&sta_cmd, &il->stations[sta_id].sta, - sizeof(struct il_addsta_cmd)); - spin_unlock_irqrestore(&il->sta_lock, flags); - - return il_send_add_sta(il, &sta_cmd, CMD_SYNC); -} - -static int -il4965_set_ccmp_dynamic_key_info(struct il_priv *il, - struct ieee80211_key_conf *keyconf, u8 sta_id) -{ - unsigned long flags; - __le16 key_flags = 0; - struct il_addsta_cmd sta_cmd; - - lockdep_assert_held(&il->mutex); - - key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK); - key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); - key_flags &= ~STA_KEY_FLG_INVALID; - - if (sta_id == il->hw_params.bcast_id) - key_flags |= STA_KEY_MULTICAST_MSK; - - keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; - - spin_lock_irqsave(&il->sta_lock, flags); - il->stations[sta_id].keyinfo.cipher = keyconf->cipher; - il->stations[sta_id].keyinfo.keylen = keyconf->keylen; - - memcpy(il->stations[sta_id].keyinfo.key, keyconf->key, keyconf->keylen); - - memcpy(il->stations[sta_id].sta.key.key, keyconf->key, keyconf->keylen); - - if ((il->stations[sta_id].sta.key. - key_flags & STA_KEY_FLG_ENCRYPT_MSK) == STA_KEY_FLG_NO_ENC) - il->stations[sta_id].sta.key.key_offset = - il_get_free_ucode_key_idx(il); - /* else, we are overriding an existing key => no need to allocated room - * in uCode. */ - - WARN(il->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET, - "no space for a new key"); - - il->stations[sta_id].sta.key.key_flags = key_flags; - il->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; - il->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; - - memcpy(&sta_cmd, &il->stations[sta_id].sta, - sizeof(struct il_addsta_cmd)); - spin_unlock_irqrestore(&il->sta_lock, flags); - - return il_send_add_sta(il, &sta_cmd, CMD_SYNC); -} - -static int -il4965_set_tkip_dynamic_key_info(struct il_priv *il, - struct ieee80211_key_conf *keyconf, u8 sta_id) -{ - unsigned long flags; - int ret = 0; - __le16 key_flags = 0; - - key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK); - key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); - key_flags &= ~STA_KEY_FLG_INVALID; - - if (sta_id == il->hw_params.bcast_id) - key_flags |= STA_KEY_MULTICAST_MSK; - - keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; - keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; - - spin_lock_irqsave(&il->sta_lock, flags); - - il->stations[sta_id].keyinfo.cipher = keyconf->cipher; - il->stations[sta_id].keyinfo.keylen = 16; - - if ((il->stations[sta_id].sta.key. - key_flags & STA_KEY_FLG_ENCRYPT_MSK) == STA_KEY_FLG_NO_ENC) - il->stations[sta_id].sta.key.key_offset = - il_get_free_ucode_key_idx(il); - /* else, we are overriding an existing key => no need to allocated room - * in uCode. */ - - WARN(il->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET, - "no space for a new key"); - - il->stations[sta_id].sta.key.key_flags = key_flags; - - /* This copy is acutally not needed: we get the key with each TX */ - memcpy(il->stations[sta_id].keyinfo.key, keyconf->key, 16); - - memcpy(il->stations[sta_id].sta.key.key, keyconf->key, 16); - - spin_unlock_irqrestore(&il->sta_lock, flags); - - return ret; -} - -void -il4965_update_tkip_key(struct il_priv *il, struct ieee80211_key_conf *keyconf, - struct ieee80211_sta *sta, u32 iv32, u16 *phase1key) -{ - u8 sta_id; - unsigned long flags; - int i; - - if (il_scan_cancel(il)) { - /* cancel scan failed, just live w/ bad key and rely - briefly on SW decryption */ - return; - } - - sta_id = il_sta_id_or_broadcast(il, sta); - if (sta_id == IL_INVALID_STATION) - return; - - spin_lock_irqsave(&il->sta_lock, flags); - - il->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32; - - for (i = 0; i < 5; i++) - il->stations[sta_id].sta.key.tkip_rx_ttak[i] = - cpu_to_le16(phase1key[i]); - - il->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; - il->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; - - il_send_add_sta(il, &il->stations[sta_id].sta, CMD_ASYNC); - - spin_unlock_irqrestore(&il->sta_lock, flags); -} - -int -il4965_remove_dynamic_key(struct il_priv *il, - struct ieee80211_key_conf *keyconf, u8 sta_id) -{ - unsigned long flags; - u16 key_flags; - u8 keyidx; - struct il_addsta_cmd sta_cmd; - - lockdep_assert_held(&il->mutex); - - il->_4965.key_mapping_keys--; - - spin_lock_irqsave(&il->sta_lock, flags); - key_flags = le16_to_cpu(il->stations[sta_id].sta.key.key_flags); - keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3; - - D_WEP("Remove dynamic key: idx=%d sta=%d\n", keyconf->keyidx, sta_id); - - if (keyconf->keyidx != keyidx) { - /* We need to remove a key with idx different that the one - * in the uCode. This means that the key we need to remove has - * been replaced by another one with different idx. - * Don't do anything and return ok - */ - spin_unlock_irqrestore(&il->sta_lock, flags); - return 0; - } - - if (il->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_INVALID) { - IL_WARN("Removing wrong key %d 0x%x\n", keyconf->keyidx, - key_flags); - spin_unlock_irqrestore(&il->sta_lock, flags); - return 0; - } - - if (!test_and_clear_bit - (il->stations[sta_id].sta.key.key_offset, &il->ucode_key_table)) - IL_ERR("idx %d not used in uCode key table.\n", - il->stations[sta_id].sta.key.key_offset); - memset(&il->stations[sta_id].keyinfo, 0, sizeof(struct il_hw_key)); - memset(&il->stations[sta_id].sta.key, 0, sizeof(struct il4965_keyinfo)); - il->stations[sta_id].sta.key.key_flags = - STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID; - il->stations[sta_id].sta.key.key_offset = keyconf->hw_key_idx; - il->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; - il->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; - - if (il_is_rfkill(il)) { - D_WEP - ("Not sending C_ADD_STA command because RFKILL enabled.\n"); - spin_unlock_irqrestore(&il->sta_lock, flags); - return 0; - } - memcpy(&sta_cmd, &il->stations[sta_id].sta, - sizeof(struct il_addsta_cmd)); - spin_unlock_irqrestore(&il->sta_lock, flags); - - return il_send_add_sta(il, &sta_cmd, CMD_SYNC); -} - -int -il4965_set_dynamic_key(struct il_priv *il, struct ieee80211_key_conf *keyconf, - u8 sta_id) -{ - int ret; - - lockdep_assert_held(&il->mutex); - - il->_4965.key_mapping_keys++; - keyconf->hw_key_idx = HW_KEY_DYNAMIC; - - switch (keyconf->cipher) { - case WLAN_CIPHER_SUITE_CCMP: - ret = - il4965_set_ccmp_dynamic_key_info(il, keyconf, sta_id); - break; - case WLAN_CIPHER_SUITE_TKIP: - ret = - il4965_set_tkip_dynamic_key_info(il, keyconf, sta_id); - break; - case WLAN_CIPHER_SUITE_WEP40: - case WLAN_CIPHER_SUITE_WEP104: - ret = il4965_set_wep_dynamic_key_info(il, keyconf, sta_id); - break; - default: - IL_ERR("Unknown alg: %s cipher = %x\n", __func__, - keyconf->cipher); - ret = -EINVAL; - } - - D_WEP("Set dynamic key: cipher=%x len=%d idx=%d sta=%d ret=%d\n", - keyconf->cipher, keyconf->keylen, keyconf->keyidx, sta_id, ret); - - return ret; -} - -/** - * il4965_alloc_bcast_station - add broadcast station into driver's station table. - * - * This adds the broadcast station into the driver's station table - * and marks it driver active, so that it will be restored to the - * device at the next best time. - */ -int -il4965_alloc_bcast_station(struct il_priv *il) -{ - struct il_link_quality_cmd *link_cmd; - unsigned long flags; - u8 sta_id; - - spin_lock_irqsave(&il->sta_lock, flags); - sta_id = il_prep_station(il, il_bcast_addr, false, NULL); - if (sta_id == IL_INVALID_STATION) { - IL_ERR("Unable to prepare broadcast station\n"); - spin_unlock_irqrestore(&il->sta_lock, flags); - - return -EINVAL; - } - - il->stations[sta_id].used |= IL_STA_DRIVER_ACTIVE; - il->stations[sta_id].used |= IL_STA_BCAST; - spin_unlock_irqrestore(&il->sta_lock, flags); - - link_cmd = il4965_sta_alloc_lq(il, sta_id); - if (!link_cmd) { - IL_ERR - ("Unable to initialize rate scaling for bcast station.\n"); - return -ENOMEM; - } - - spin_lock_irqsave(&il->sta_lock, flags); - il->stations[sta_id].lq = link_cmd; - spin_unlock_irqrestore(&il->sta_lock, flags); - - return 0; -} - -/** - * il4965_update_bcast_station - update broadcast station's LQ command - * - * Only used by iwl4965. Placed here to have all bcast station management - * code together. - */ -static int -il4965_update_bcast_station(struct il_priv *il) -{ - unsigned long flags; - struct il_link_quality_cmd *link_cmd; - u8 sta_id = il->hw_params.bcast_id; - - link_cmd = il4965_sta_alloc_lq(il, sta_id); - if (!link_cmd) { - IL_ERR("Unable to initialize rate scaling for bcast sta.\n"); - return -ENOMEM; - } - - spin_lock_irqsave(&il->sta_lock, flags); - if (il->stations[sta_id].lq) - kfree(il->stations[sta_id].lq); - else - D_INFO("Bcast sta rate scaling has not been initialized.\n"); - il->stations[sta_id].lq = link_cmd; - spin_unlock_irqrestore(&il->sta_lock, flags); - - return 0; -} - -int -il4965_update_bcast_stations(struct il_priv *il) -{ - return il4965_update_bcast_station(il); -} - -/** - * il4965_sta_tx_modify_enable_tid - Enable Tx for this TID in station table - */ -int -il4965_sta_tx_modify_enable_tid(struct il_priv *il, int sta_id, int tid) -{ - unsigned long flags; - struct il_addsta_cmd sta_cmd; - - lockdep_assert_held(&il->mutex); - - /* Remove "disable" flag, to enable Tx for this TID */ - spin_lock_irqsave(&il->sta_lock, flags); - il->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX; - il->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid)); - il->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; - memcpy(&sta_cmd, &il->stations[sta_id].sta, - sizeof(struct il_addsta_cmd)); - spin_unlock_irqrestore(&il->sta_lock, flags); - - return il_send_add_sta(il, &sta_cmd, CMD_SYNC); -} - -int -il4965_sta_rx_agg_start(struct il_priv *il, struct ieee80211_sta *sta, int tid, - u16 ssn) -{ - unsigned long flags; - int sta_id; - struct il_addsta_cmd sta_cmd; - - lockdep_assert_held(&il->mutex); - - sta_id = il_sta_id(sta); - if (sta_id == IL_INVALID_STATION) - return -ENXIO; - - spin_lock_irqsave(&il->sta_lock, flags); - il->stations[sta_id].sta.station_flags_msk = 0; - il->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK; - il->stations[sta_id].sta.add_immediate_ba_tid = (u8) tid; - il->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn); - il->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; - memcpy(&sta_cmd, &il->stations[sta_id].sta, - sizeof(struct il_addsta_cmd)); - spin_unlock_irqrestore(&il->sta_lock, flags); - - return il_send_add_sta(il, &sta_cmd, CMD_SYNC); -} - -int -il4965_sta_rx_agg_stop(struct il_priv *il, struct ieee80211_sta *sta, int tid) -{ - unsigned long flags; - int sta_id; - struct il_addsta_cmd sta_cmd; - - lockdep_assert_held(&il->mutex); - - sta_id = il_sta_id(sta); - if (sta_id == IL_INVALID_STATION) { - IL_ERR("Invalid station for AGG tid %d\n", tid); - return -ENXIO; - } - - spin_lock_irqsave(&il->sta_lock, flags); - il->stations[sta_id].sta.station_flags_msk = 0; - il->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK; - il->stations[sta_id].sta.remove_immediate_ba_tid = (u8) tid; - il->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; - memcpy(&sta_cmd, &il->stations[sta_id].sta, - sizeof(struct il_addsta_cmd)); - spin_unlock_irqrestore(&il->sta_lock, flags); - - return il_send_add_sta(il, &sta_cmd, CMD_SYNC); -} - -void -il4965_sta_modify_sleep_tx_count(struct il_priv *il, int sta_id, int cnt) -{ - unsigned long flags; - - spin_lock_irqsave(&il->sta_lock, flags); - il->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK; - il->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK; - il->stations[sta_id].sta.sta.modify_mask = - STA_MODIFY_SLEEP_TX_COUNT_MSK; - il->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt); - il->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; - il_send_add_sta(il, &il->stations[sta_id].sta, CMD_ASYNC); - spin_unlock_irqrestore(&il->sta_lock, flags); - -} - -void -il4965_update_chain_flags(struct il_priv *il) -{ - if (il->ops->set_rxon_chain) { - il->ops->set_rxon_chain(il); - if (il->active.rx_chain != il->staging.rx_chain) - il_commit_rxon(il); - } -} - -static void -il4965_clear_free_frames(struct il_priv *il) -{ - struct list_head *element; - - D_INFO("%d frames on pre-allocated heap on clear.\n", il->frames_count); - - while (!list_empty(&il->free_frames)) { - element = il->free_frames.next; - list_del(element); - kfree(list_entry(element, struct il_frame, list)); - il->frames_count--; - } - - if (il->frames_count) { - IL_WARN("%d frames still in use. Did we lose one?\n", - il->frames_count); - il->frames_count = 0; - } -} - -static struct il_frame * -il4965_get_free_frame(struct il_priv *il) -{ - struct il_frame *frame; - struct list_head *element; - if (list_empty(&il->free_frames)) { - frame = kzalloc(sizeof(*frame), GFP_KERNEL); - if (!frame) { - IL_ERR("Could not allocate frame!\n"); - return NULL; - } - - il->frames_count++; - return frame; - } - - element = il->free_frames.next; - list_del(element); - return list_entry(element, struct il_frame, list); -} - -static void -il4965_free_frame(struct il_priv *il, struct il_frame *frame) -{ - memset(frame, 0, sizeof(*frame)); - list_add(&frame->list, &il->free_frames); -} - -static u32 -il4965_fill_beacon_frame(struct il_priv *il, struct ieee80211_hdr *hdr, - int left) -{ - lockdep_assert_held(&il->mutex); - - if (!il->beacon_skb) - return 0; - - if (il->beacon_skb->len > left) - return 0; - - memcpy(hdr, il->beacon_skb->data, il->beacon_skb->len); - - return il->beacon_skb->len; -} - -/* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */ -static void -il4965_set_beacon_tim(struct il_priv *il, - struct il_tx_beacon_cmd *tx_beacon_cmd, u8 * beacon, - u32 frame_size) -{ - u16 tim_idx; - struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; - - /* - * The idx is relative to frame start but we start looking at the - * variable-length part of the beacon. - */ - tim_idx = mgmt->u.beacon.variable - beacon; - - /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ - while ((tim_idx < (frame_size - 2)) && - (beacon[tim_idx] != WLAN_EID_TIM)) - tim_idx += beacon[tim_idx + 1] + 2; - - /* If TIM field was found, set variables */ - if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { - tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx); - tx_beacon_cmd->tim_size = beacon[tim_idx + 1]; - } else - IL_WARN("Unable to find TIM Element in beacon\n"); -} - -static unsigned int -il4965_hw_get_beacon_cmd(struct il_priv *il, struct il_frame *frame) -{ - struct il_tx_beacon_cmd *tx_beacon_cmd; - u32 frame_size; - u32 rate_flags; - u32 rate; - /* - * We have to set up the TX command, the TX Beacon command, and the - * beacon contents. - */ - - lockdep_assert_held(&il->mutex); - - if (!il->beacon_enabled) { - IL_ERR("Trying to build beacon without beaconing enabled\n"); - return 0; - } - - /* Initialize memory */ - tx_beacon_cmd = &frame->u.beacon; - memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd)); - - /* Set up TX beacon contents */ - frame_size = - il4965_fill_beacon_frame(il, tx_beacon_cmd->frame, - sizeof(frame->u) - sizeof(*tx_beacon_cmd)); - if (WARN_ON_ONCE(frame_size > MAX_MPDU_SIZE)) - return 0; - if (!frame_size) - return 0; - - /* Set up TX command fields */ - tx_beacon_cmd->tx.len = cpu_to_le16((u16) frame_size); - tx_beacon_cmd->tx.sta_id = il->hw_params.bcast_id; - tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; - tx_beacon_cmd->tx.tx_flags = - TX_CMD_FLG_SEQ_CTL_MSK | TX_CMD_FLG_TSF_MSK | - TX_CMD_FLG_STA_RATE_MSK; - - /* Set up TX beacon command fields */ - il4965_set_beacon_tim(il, tx_beacon_cmd, (u8 *) tx_beacon_cmd->frame, - frame_size); - - /* Set up packet rate and flags */ - rate = il_get_lowest_plcp(il); - il4965_toggle_tx_ant(il, &il->mgmt_tx_ant, il->hw_params.valid_tx_ant); - rate_flags = BIT(il->mgmt_tx_ant) << RATE_MCS_ANT_POS; - if ((rate >= IL_FIRST_CCK_RATE) && (rate <= IL_LAST_CCK_RATE)) - rate_flags |= RATE_MCS_CCK_MSK; - tx_beacon_cmd->tx.rate_n_flags = cpu_to_le32(rate | rate_flags); - - return sizeof(*tx_beacon_cmd) + frame_size; -} - -int -il4965_send_beacon_cmd(struct il_priv *il) -{ - struct il_frame *frame; - unsigned int frame_size; - int rc; - - frame = il4965_get_free_frame(il); - if (!frame) { - IL_ERR("Could not obtain free frame buffer for beacon " - "command.\n"); - return -ENOMEM; - } - - frame_size = il4965_hw_get_beacon_cmd(il, frame); - if (!frame_size) { - IL_ERR("Error configuring the beacon command\n"); - il4965_free_frame(il, frame); - return -EINVAL; - } - - rc = il_send_cmd_pdu(il, C_TX_BEACON, frame_size, &frame->u.cmd[0]); - - il4965_free_frame(il, frame); - - return rc; -} - -static inline dma_addr_t -il4965_tfd_tb_get_addr(struct il_tfd *tfd, u8 idx) -{ - struct il_tfd_tb *tb = &tfd->tbs[idx]; - - dma_addr_t addr = get_unaligned_le32(&tb->lo); - if (sizeof(dma_addr_t) > sizeof(u32)) - addr |= - ((dma_addr_t) (le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << - 16; - - return addr; -} - -static inline u16 -il4965_tfd_tb_get_len(struct il_tfd *tfd, u8 idx) -{ - struct il_tfd_tb *tb = &tfd->tbs[idx]; - - return le16_to_cpu(tb->hi_n_len) >> 4; -} - -static inline void -il4965_tfd_set_tb(struct il_tfd *tfd, u8 idx, dma_addr_t addr, u16 len) -{ - struct il_tfd_tb *tb = &tfd->tbs[idx]; - u16 hi_n_len = len << 4; - - put_unaligned_le32(addr, &tb->lo); - if (sizeof(dma_addr_t) > sizeof(u32)) - hi_n_len |= ((addr >> 16) >> 16) & 0xF; - - tb->hi_n_len = cpu_to_le16(hi_n_len); - - tfd->num_tbs = idx + 1; -} - -static inline u8 -il4965_tfd_get_num_tbs(struct il_tfd *tfd) -{ - return tfd->num_tbs & 0x1f; -} - -/** - * il4965_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr] - * @il - driver ilate data - * @txq - tx queue - * - * Does NOT advance any TFD circular buffer read/write idxes - * Does NOT free the TFD itself (which is within circular buffer) - */ -void -il4965_hw_txq_free_tfd(struct il_priv *il, struct il_tx_queue *txq) -{ - struct il_tfd *tfd_tmp = (struct il_tfd *)txq->tfds; - struct il_tfd *tfd; - struct pci_dev *dev = il->pci_dev; - int idx = txq->q.read_ptr; - int i; - int num_tbs; - - tfd = &tfd_tmp[idx]; - - /* Sanity check on number of chunks */ - num_tbs = il4965_tfd_get_num_tbs(tfd); - - if (num_tbs >= IL_NUM_OF_TBS) { - IL_ERR("Too many chunks: %i\n", num_tbs); - /* @todo issue fatal error, it is quite serious situation */ - return; - } - - /* Unmap tx_cmd */ - if (num_tbs) - pci_unmap_single(dev, dma_unmap_addr(&txq->meta[idx], mapping), - dma_unmap_len(&txq->meta[idx], len), - PCI_DMA_BIDIRECTIONAL); - - /* Unmap chunks, if any. */ - for (i = 1; i < num_tbs; i++) - pci_unmap_single(dev, il4965_tfd_tb_get_addr(tfd, i), - il4965_tfd_tb_get_len(tfd, i), - PCI_DMA_TODEVICE); - - /* free SKB */ - if (txq->skbs) { - struct sk_buff *skb = txq->skbs[txq->q.read_ptr]; - - /* can be called from irqs-disabled context */ - if (skb) { - dev_kfree_skb_any(skb); - txq->skbs[txq->q.read_ptr] = NULL; - } - } -} - -int -il4965_hw_txq_attach_buf_to_tfd(struct il_priv *il, struct il_tx_queue *txq, - dma_addr_t addr, u16 len, u8 reset, u8 pad) -{ - struct il_queue *q; - struct il_tfd *tfd, *tfd_tmp; - u32 num_tbs; - - q = &txq->q; - tfd_tmp = (struct il_tfd *)txq->tfds; - tfd = &tfd_tmp[q->write_ptr]; - - if (reset) - memset(tfd, 0, sizeof(*tfd)); - - num_tbs = il4965_tfd_get_num_tbs(tfd); - - /* Each TFD can point to a maximum 20 Tx buffers */ - if (num_tbs >= IL_NUM_OF_TBS) { - IL_ERR("Error can not send more than %d chunks\n", - IL_NUM_OF_TBS); - return -EINVAL; - } - - BUG_ON(addr & ~DMA_BIT_MASK(36)); - if (unlikely(addr & ~IL_TX_DMA_MASK)) - IL_ERR("Unaligned address = %llx\n", (unsigned long long)addr); - - il4965_tfd_set_tb(tfd, num_tbs, addr, len); - - return 0; -} - -/* - * Tell nic where to find circular buffer of Tx Frame Descriptors for - * given Tx queue, and enable the DMA channel used for that queue. - * - * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA - * channels supported in hardware. - */ -int -il4965_hw_tx_queue_init(struct il_priv *il, struct il_tx_queue *txq) -{ - int txq_id = txq->q.id; - - /* Circular buffer (TFD queue in DRAM) physical base address */ - il_wr(il, FH49_MEM_CBBC_QUEUE(txq_id), txq->q.dma_addr >> 8); - - return 0; -} - -/****************************************************************************** - * - * Generic RX handler implementations - * - ******************************************************************************/ -static void -il4965_hdl_alive(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - struct il_alive_resp *palive; - struct delayed_work *pwork; - - palive = &pkt->u.alive_frame; - - D_INFO("Alive ucode status 0x%08X revision " "0x%01X 0x%01X\n", - palive->is_valid, palive->ver_type, palive->ver_subtype); - - if (palive->ver_subtype == INITIALIZE_SUBTYPE) { - D_INFO("Initialization Alive received.\n"); - memcpy(&il->card_alive_init, &pkt->u.alive_frame, - sizeof(struct il_init_alive_resp)); - pwork = &il->init_alive_start; - } else { - D_INFO("Runtime Alive received.\n"); - memcpy(&il->card_alive, &pkt->u.alive_frame, - sizeof(struct il_alive_resp)); - pwork = &il->alive_start; - } - - /* We delay the ALIVE response by 5ms to - * give the HW RF Kill time to activate... */ - if (palive->is_valid == UCODE_VALID_OK) - queue_delayed_work(il->workqueue, pwork, msecs_to_jiffies(5)); - else - IL_WARN("uCode did not respond OK.\n"); -} - -/** - * il4965_bg_stats_periodic - Timer callback to queue stats - * - * This callback is provided in order to send a stats request. - * - * This timer function is continually reset to execute within - * 60 seconds since the last N_STATS was received. We need to - * ensure we receive the stats in order to update the temperature - * used for calibrating the TXPOWER. - */ -static void -il4965_bg_stats_periodic(unsigned long data) -{ - struct il_priv *il = (struct il_priv *)data; - - if (test_bit(S_EXIT_PENDING, &il->status)) - return; - - /* dont send host command if rf-kill is on */ - if (!il_is_ready_rf(il)) - return; - - il_send_stats_request(il, CMD_ASYNC, false); -} - -static void -il4965_hdl_beacon(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - struct il4965_beacon_notif *beacon = - (struct il4965_beacon_notif *)pkt->u.raw; -#ifdef CONFIG_IWLEGACY_DEBUG - u8 rate = il4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags); - - D_RX("beacon status %x retries %d iss %d tsf:0x%.8x%.8x rate %d\n", - le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK, - beacon->beacon_notify_hdr.failure_frame, - le32_to_cpu(beacon->ibss_mgr_status), - le32_to_cpu(beacon->high_tsf), le32_to_cpu(beacon->low_tsf), rate); -#endif - il->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status); -} - -static void -il4965_perform_ct_kill_task(struct il_priv *il) -{ - unsigned long flags; - - D_POWER("Stop all queues\n"); - - if (il->mac80211_registered) - ieee80211_stop_queues(il->hw); - - _il_wr(il, CSR_UCODE_DRV_GP1_SET, - CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT); - _il_rd(il, CSR_UCODE_DRV_GP1); - - spin_lock_irqsave(&il->reg_lock, flags); - if (likely(_il_grab_nic_access(il))) - _il_release_nic_access(il); - spin_unlock_irqrestore(&il->reg_lock, flags); -} - -/* Handle notification from uCode that card's power state is changing - * due to software, hardware, or critical temperature RFKILL */ -static void -il4965_hdl_card_state(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags); - unsigned long status = il->status; - - D_RF_KILL("Card state received: HW:%s SW:%s CT:%s\n", - (flags & HW_CARD_DISABLED) ? "Kill" : "On", - (flags & SW_CARD_DISABLED) ? "Kill" : "On", - (flags & CT_CARD_DISABLED) ? "Reached" : "Not reached"); - - if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED | CT_CARD_DISABLED)) { - - _il_wr(il, CSR_UCODE_DRV_GP1_SET, - CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); - - il_wr(il, HBUS_TARG_MBX_C, HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED); - - if (!(flags & RXON_CARD_DISABLED)) { - _il_wr(il, CSR_UCODE_DRV_GP1_CLR, - CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); - il_wr(il, HBUS_TARG_MBX_C, - HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED); - } - } - - if (flags & CT_CARD_DISABLED) - il4965_perform_ct_kill_task(il); - - if (flags & HW_CARD_DISABLED) - set_bit(S_RFKILL, &il->status); - else - clear_bit(S_RFKILL, &il->status); - - if (!(flags & RXON_CARD_DISABLED)) - il_scan_cancel(il); - - if ((test_bit(S_RFKILL, &status) != - test_bit(S_RFKILL, &il->status))) - wiphy_rfkill_set_hw_state(il->hw->wiphy, - test_bit(S_RFKILL, &il->status)); - else - wake_up(&il->wait_command_queue); -} - -/** - * il4965_setup_handlers - Initialize Rx handler callbacks - * - * Setup the RX handlers for each of the reply types sent from the uCode - * to the host. - * - * This function chains into the hardware specific files for them to setup - * any hardware specific handlers as well. - */ -static void -il4965_setup_handlers(struct il_priv *il) -{ - il->handlers[N_ALIVE] = il4965_hdl_alive; - il->handlers[N_ERROR] = il_hdl_error; - il->handlers[N_CHANNEL_SWITCH] = il_hdl_csa; - il->handlers[N_SPECTRUM_MEASUREMENT] = il_hdl_spectrum_measurement; - il->handlers[N_PM_SLEEP] = il_hdl_pm_sleep; - il->handlers[N_PM_DEBUG_STATS] = il_hdl_pm_debug_stats; - il->handlers[N_BEACON] = il4965_hdl_beacon; - - /* - * The same handler is used for both the REPLY to a discrete - * stats request from the host as well as for the periodic - * stats notifications (after received beacons) from the uCode. - */ - il->handlers[C_STATS] = il4965_hdl_c_stats; - il->handlers[N_STATS] = il4965_hdl_stats; - - il_setup_rx_scan_handlers(il); - - /* status change handler */ - il->handlers[N_CARD_STATE] = il4965_hdl_card_state; - - il->handlers[N_MISSED_BEACONS] = il4965_hdl_missed_beacon; - /* Rx handlers */ - il->handlers[N_RX_PHY] = il4965_hdl_rx_phy; - il->handlers[N_RX_MPDU] = il4965_hdl_rx; - il->handlers[N_RX] = il4965_hdl_rx; - /* block ack */ - il->handlers[N_COMPRESSED_BA] = il4965_hdl_compressed_ba; - /* Tx response */ - il->handlers[C_TX] = il4965_hdl_tx; -} - -/** - * il4965_rx_handle - Main entry function for receiving responses from uCode - * - * Uses the il->handlers callback function array to invoke - * the appropriate handlers, including command responses, - * frame-received notifications, and other notifications. - */ -void -il4965_rx_handle(struct il_priv *il) -{ - struct il_rx_buf *rxb; - struct il_rx_pkt *pkt; - struct il_rx_queue *rxq = &il->rxq; - u32 r, i; - int reclaim; - unsigned long flags; - u8 fill_rx = 0; - u32 count = 8; - int total_empty; - - /* uCode's read idx (stored in shared DRAM) indicates the last Rx - * buffer that the driver may process (last buffer filled by ucode). */ - r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF; - i = rxq->read; - - /* Rx interrupt, but nothing sent from uCode */ - if (i == r) - D_RX("r = %d, i = %d\n", r, i); - - /* calculate total frames need to be restock after handling RX */ - total_empty = r - rxq->write_actual; - if (total_empty < 0) - total_empty += RX_QUEUE_SIZE; - - if (total_empty > (RX_QUEUE_SIZE / 2)) - fill_rx = 1; - - while (i != r) { - int len; - - rxb = rxq->queue[i]; - - /* If an RXB doesn't have a Rx queue slot associated with it, - * then a bug has been introduced in the queue refilling - * routines -- catch it here */ - BUG_ON(rxb == NULL); - - rxq->queue[i] = NULL; - - pci_unmap_page(il->pci_dev, rxb->page_dma, - PAGE_SIZE << il->hw_params.rx_page_order, - PCI_DMA_FROMDEVICE); - pkt = rxb_addr(rxb); - - len = le32_to_cpu(pkt->len_n_flags) & IL_RX_FRAME_SIZE_MSK; - len += sizeof(u32); /* account for status word */ - - reclaim = il_need_reclaim(il, pkt); - - /* Based on type of command response or notification, - * handle those that need handling via function in - * handlers table. See il4965_setup_handlers() */ - if (il->handlers[pkt->hdr.cmd]) { - D_RX("r = %d, i = %d, %s, 0x%02x\n", r, i, - il_get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd); - il->isr_stats.handlers[pkt->hdr.cmd]++; - il->handlers[pkt->hdr.cmd] (il, rxb); - } else { - /* No handling needed */ - D_RX("r %d i %d No handler needed for %s, 0x%02x\n", r, - i, il_get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd); - } - - /* - * XXX: After here, we should always check rxb->page - * against NULL before touching it or its virtual - * memory (pkt). Because some handler might have - * already taken or freed the pages. - */ - - if (reclaim) { - /* Invoke any callbacks, transfer the buffer to caller, - * and fire off the (possibly) blocking il_send_cmd() - * as we reclaim the driver command queue */ - if (rxb->page) - il_tx_cmd_complete(il, rxb); - else - IL_WARN("Claim null rxb?\n"); - } - - /* Reuse the page if possible. For notification packets and - * SKBs that fail to Rx correctly, add them back into the - * rx_free list for reuse later. */ - spin_lock_irqsave(&rxq->lock, flags); - if (rxb->page != NULL) { - rxb->page_dma = - pci_map_page(il->pci_dev, rxb->page, 0, - PAGE_SIZE << il->hw_params. - rx_page_order, PCI_DMA_FROMDEVICE); - - if (unlikely(pci_dma_mapping_error(il->pci_dev, - rxb->page_dma))) { - __il_free_pages(il, rxb->page); - rxb->page = NULL; - list_add_tail(&rxb->list, &rxq->rx_used); - } else { - list_add_tail(&rxb->list, &rxq->rx_free); - rxq->free_count++; - } - } else - list_add_tail(&rxb->list, &rxq->rx_used); - - spin_unlock_irqrestore(&rxq->lock, flags); - - i = (i + 1) & RX_QUEUE_MASK; - /* If there are a lot of unused frames, - * restock the Rx queue so ucode wont assert. */ - if (fill_rx) { - count++; - if (count >= 8) { - rxq->read = i; - il4965_rx_replenish_now(il); - count = 0; - } - } - } - - /* Backtrack one entry */ - rxq->read = i; - if (fill_rx) - il4965_rx_replenish_now(il); - else - il4965_rx_queue_restock(il); -} - -/* call this function to flush any scheduled tasklet */ -static inline void -il4965_synchronize_irq(struct il_priv *il) -{ - /* wait to make sure we flush pending tasklet */ - synchronize_irq(il->pci_dev->irq); - tasklet_kill(&il->irq_tasklet); -} - -static void -il4965_irq_tasklet(struct il_priv *il) -{ - u32 inta, handled = 0; - u32 inta_fh; - unsigned long flags; - u32 i; -#ifdef CONFIG_IWLEGACY_DEBUG - u32 inta_mask; -#endif - - spin_lock_irqsave(&il->lock, flags); - - /* Ack/clear/reset pending uCode interrupts. - * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS, - * and will clear only when CSR_FH_INT_STATUS gets cleared. */ - inta = _il_rd(il, CSR_INT); - _il_wr(il, CSR_INT, inta); - - /* Ack/clear/reset pending flow-handler (DMA) interrupts. - * Any new interrupts that happen after this, either while we're - * in this tasklet, or later, will show up in next ISR/tasklet. */ - inta_fh = _il_rd(il, CSR_FH_INT_STATUS); - _il_wr(il, CSR_FH_INT_STATUS, inta_fh); - -#ifdef CONFIG_IWLEGACY_DEBUG - if (il_get_debug_level(il) & IL_DL_ISR) { - /* just for debug */ - inta_mask = _il_rd(il, CSR_INT_MASK); - D_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", inta, - inta_mask, inta_fh); - } -#endif - - spin_unlock_irqrestore(&il->lock, flags); - - /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not - * atomic, make sure that inta covers all the interrupts that - * we've discovered, even if FH interrupt came in just after - * reading CSR_INT. */ - if (inta_fh & CSR49_FH_INT_RX_MASK) - inta |= CSR_INT_BIT_FH_RX; - if (inta_fh & CSR49_FH_INT_TX_MASK) - inta |= CSR_INT_BIT_FH_TX; - - /* Now service all interrupt bits discovered above. */ - if (inta & CSR_INT_BIT_HW_ERR) { - IL_ERR("Hardware error detected. Restarting.\n"); - - /* Tell the device to stop sending interrupts */ - il_disable_interrupts(il); - - il->isr_stats.hw++; - il_irq_handle_error(il); - - handled |= CSR_INT_BIT_HW_ERR; - - return; - } -#ifdef CONFIG_IWLEGACY_DEBUG - if (il_get_debug_level(il) & (IL_DL_ISR)) { - /* NIC fires this, but we don't use it, redundant with WAKEUP */ - if (inta & CSR_INT_BIT_SCD) { - D_ISR("Scheduler finished to transmit " - "the frame/frames.\n"); - il->isr_stats.sch++; - } - - /* Alive notification via Rx interrupt will do the real work */ - if (inta & CSR_INT_BIT_ALIVE) { - D_ISR("Alive interrupt\n"); - il->isr_stats.alive++; - } - } -#endif - /* Safely ignore these bits for debug checks below */ - inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE); - - /* HW RF KILL switch toggled */ - if (inta & CSR_INT_BIT_RF_KILL) { - int hw_rf_kill = 0; - - if (!(_il_rd(il, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)) - hw_rf_kill = 1; - - IL_WARN("RF_KILL bit toggled to %s.\n", - hw_rf_kill ? "disable radio" : "enable radio"); - - il->isr_stats.rfkill++; - - /* driver only loads ucode once setting the interface up. - * the driver allows loading the ucode even if the radio - * is killed. Hence update the killswitch state here. The - * rfkill handler will care about restarting if needed. - */ - if (hw_rf_kill) { - set_bit(S_RFKILL, &il->status); - } else { - clear_bit(S_RFKILL, &il->status); - il_force_reset(il, true); - } - wiphy_rfkill_set_hw_state(il->hw->wiphy, hw_rf_kill); - - handled |= CSR_INT_BIT_RF_KILL; - } - - /* Chip got too hot and stopped itself */ - if (inta & CSR_INT_BIT_CT_KILL) { - IL_ERR("Microcode CT kill error detected.\n"); - il->isr_stats.ctkill++; - handled |= CSR_INT_BIT_CT_KILL; - } - - /* Error detected by uCode */ - if (inta & CSR_INT_BIT_SW_ERR) { - IL_ERR("Microcode SW error detected. " " Restarting 0x%X.\n", - inta); - il->isr_stats.sw++; - il_irq_handle_error(il); - handled |= CSR_INT_BIT_SW_ERR; - } - - /* - * uCode wakes up after power-down sleep. - * Tell device about any new tx or host commands enqueued, - * and about any Rx buffers made available while asleep. - */ - if (inta & CSR_INT_BIT_WAKEUP) { - D_ISR("Wakeup interrupt\n"); - il_rx_queue_update_write_ptr(il, &il->rxq); - for (i = 0; i < il->hw_params.max_txq_num; i++) - il_txq_update_write_ptr(il, &il->txq[i]); - il->isr_stats.wakeup++; - handled |= CSR_INT_BIT_WAKEUP; - } - - /* All uCode command responses, including Tx command responses, - * Rx "responses" (frame-received notification), and other - * notifications from uCode come through here*/ - if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) { - il4965_rx_handle(il); - il->isr_stats.rx++; - handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX); - } - - /* This "Tx" DMA channel is used only for loading uCode */ - if (inta & CSR_INT_BIT_FH_TX) { - D_ISR("uCode load interrupt\n"); - il->isr_stats.tx++; - handled |= CSR_INT_BIT_FH_TX; - /* Wake up uCode load routine, now that load is complete */ - il->ucode_write_complete = 1; - wake_up(&il->wait_command_queue); - } - - if (inta & ~handled) { - IL_ERR("Unhandled INTA bits 0x%08x\n", inta & ~handled); - il->isr_stats.unhandled++; - } - - if (inta & ~(il->inta_mask)) { - IL_WARN("Disabled INTA bits 0x%08x were pending\n", - inta & ~il->inta_mask); - IL_WARN(" with FH49_INT = 0x%08x\n", inta_fh); - } - - /* Re-enable all interrupts */ - /* only Re-enable if disabled by irq */ - if (test_bit(S_INT_ENABLED, &il->status)) - il_enable_interrupts(il); - /* Re-enable RF_KILL if it occurred */ - else if (handled & CSR_INT_BIT_RF_KILL) - il_enable_rfkill_int(il); - -#ifdef CONFIG_IWLEGACY_DEBUG - if (il_get_debug_level(il) & (IL_DL_ISR)) { - inta = _il_rd(il, CSR_INT); - inta_mask = _il_rd(il, CSR_INT_MASK); - inta_fh = _il_rd(il, CSR_FH_INT_STATUS); - D_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, " - "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags); - } -#endif -} - -/***************************************************************************** - * - * sysfs attributes - * - *****************************************************************************/ - -#ifdef CONFIG_IWLEGACY_DEBUG - -/* - * The following adds a new attribute to the sysfs representation - * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/) - * used for controlling the debug level. - * - * See the level definitions in iwl for details. - * - * The debug_level being managed using sysfs below is a per device debug - * level that is used instead of the global debug level if it (the per - * device debug level) is set. - */ -static ssize_t -il4965_show_debug_level(struct device *d, struct device_attribute *attr, - char *buf) -{ - struct il_priv *il = dev_get_drvdata(d); - return sprintf(buf, "0x%08X\n", il_get_debug_level(il)); -} - -static ssize_t -il4965_store_debug_level(struct device *d, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct il_priv *il = dev_get_drvdata(d); - unsigned long val; - int ret; - - ret = kstrtoul(buf, 0, &val); - if (ret) - IL_ERR("%s is not in hex or decimal form.\n", buf); - else - il->debug_level = val; - - return strnlen(buf, count); -} - -static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO, il4965_show_debug_level, - il4965_store_debug_level); - -#endif /* CONFIG_IWLEGACY_DEBUG */ - -static ssize_t -il4965_show_temperature(struct device *d, struct device_attribute *attr, - char *buf) -{ - struct il_priv *il = dev_get_drvdata(d); - - if (!il_is_alive(il)) - return -EAGAIN; - - return sprintf(buf, "%d\n", il->temperature); -} - -static DEVICE_ATTR(temperature, S_IRUGO, il4965_show_temperature, NULL); - -static ssize_t -il4965_show_tx_power(struct device *d, struct device_attribute *attr, char *buf) -{ - struct il_priv *il = dev_get_drvdata(d); - - if (!il_is_ready_rf(il)) - return sprintf(buf, "off\n"); - else - return sprintf(buf, "%d\n", il->tx_power_user_lmt); -} - -static ssize_t -il4965_store_tx_power(struct device *d, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct il_priv *il = dev_get_drvdata(d); - unsigned long val; - int ret; - - ret = kstrtoul(buf, 10, &val); - if (ret) - IL_INFO("%s is not in decimal form.\n", buf); - else { - ret = il_set_tx_power(il, val, false); - if (ret) - IL_ERR("failed setting tx power (0x%08x).\n", ret); - else - ret = count; - } - return ret; -} - -static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, il4965_show_tx_power, - il4965_store_tx_power); - -static struct attribute *il_sysfs_entries[] = { - &dev_attr_temperature.attr, - &dev_attr_tx_power.attr, -#ifdef CONFIG_IWLEGACY_DEBUG - &dev_attr_debug_level.attr, -#endif - NULL -}; - -static struct attribute_group il_attribute_group = { - .name = NULL, /* put in device directory */ - .attrs = il_sysfs_entries, -}; - -/****************************************************************************** - * - * uCode download functions - * - ******************************************************************************/ - -static void -il4965_dealloc_ucode_pci(struct il_priv *il) -{ - il_free_fw_desc(il->pci_dev, &il->ucode_code); - il_free_fw_desc(il->pci_dev, &il->ucode_data); - il_free_fw_desc(il->pci_dev, &il->ucode_data_backup); - il_free_fw_desc(il->pci_dev, &il->ucode_init); - il_free_fw_desc(il->pci_dev, &il->ucode_init_data); - il_free_fw_desc(il->pci_dev, &il->ucode_boot); -} - -static void -il4965_nic_start(struct il_priv *il) -{ - /* Remove all resets to allow NIC to operate */ - _il_wr(il, CSR_RESET, 0); -} - -static void il4965_ucode_callback(const struct firmware *ucode_raw, - void *context); -static int il4965_mac_setup_register(struct il_priv *il, u32 max_probe_length); - -static int __must_check -il4965_request_firmware(struct il_priv *il, bool first) -{ - const char *name_pre = il->cfg->fw_name_pre; - char tag[8]; - - if (first) { - il->fw_idx = il->cfg->ucode_api_max; - sprintf(tag, "%d", il->fw_idx); - } else { - il->fw_idx--; - sprintf(tag, "%d", il->fw_idx); - } - - if (il->fw_idx < il->cfg->ucode_api_min) { - IL_ERR("no suitable firmware found!\n"); - return -ENOENT; - } - - sprintf(il->firmware_name, "%s%s%s", name_pre, tag, ".ucode"); - - D_INFO("attempting to load firmware '%s'\n", il->firmware_name); - - return request_firmware_nowait(THIS_MODULE, 1, il->firmware_name, - &il->pci_dev->dev, GFP_KERNEL, il, - il4965_ucode_callback); -} - -struct il4965_firmware_pieces { - const void *inst, *data, *init, *init_data, *boot; - size_t inst_size, data_size, init_size, init_data_size, boot_size; -}; - -static int -il4965_load_firmware(struct il_priv *il, const struct firmware *ucode_raw, - struct il4965_firmware_pieces *pieces) -{ - struct il_ucode_header *ucode = (void *)ucode_raw->data; - u32 api_ver, hdr_size; - const u8 *src; - - il->ucode_ver = le32_to_cpu(ucode->ver); - api_ver = IL_UCODE_API(il->ucode_ver); - - switch (api_ver) { - default: - case 0: - case 1: - case 2: - hdr_size = 24; - if (ucode_raw->size < hdr_size) { - IL_ERR("File size too small!\n"); - return -EINVAL; - } - pieces->inst_size = le32_to_cpu(ucode->v1.inst_size); - pieces->data_size = le32_to_cpu(ucode->v1.data_size); - pieces->init_size = le32_to_cpu(ucode->v1.init_size); - pieces->init_data_size = le32_to_cpu(ucode->v1.init_data_size); - pieces->boot_size = le32_to_cpu(ucode->v1.boot_size); - src = ucode->v1.data; - break; - } - - /* Verify size of file vs. image size info in file's header */ - if (ucode_raw->size != - hdr_size + pieces->inst_size + pieces->data_size + - pieces->init_size + pieces->init_data_size + pieces->boot_size) { - - IL_ERR("uCode file size %d does not match expected size\n", - (int)ucode_raw->size); - return -EINVAL; - } - - pieces->inst = src; - src += pieces->inst_size; - pieces->data = src; - src += pieces->data_size; - pieces->init = src; - src += pieces->init_size; - pieces->init_data = src; - src += pieces->init_data_size; - pieces->boot = src; - src += pieces->boot_size; - - return 0; -} - -/** - * il4965_ucode_callback - callback when firmware was loaded - * - * If loaded successfully, copies the firmware into buffers - * for the card to fetch (via DMA). - */ -static void -il4965_ucode_callback(const struct firmware *ucode_raw, void *context) -{ - struct il_priv *il = context; - struct il_ucode_header *ucode; - int err; - struct il4965_firmware_pieces pieces; - const unsigned int api_max = il->cfg->ucode_api_max; - const unsigned int api_min = il->cfg->ucode_api_min; - u32 api_ver; - - u32 max_probe_length = 200; - u32 standard_phy_calibration_size = - IL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE; - - memset(&pieces, 0, sizeof(pieces)); - - if (!ucode_raw) { - if (il->fw_idx <= il->cfg->ucode_api_max) - IL_ERR("request for firmware file '%s' failed.\n", - il->firmware_name); - goto try_again; - } - - D_INFO("Loaded firmware file '%s' (%zd bytes).\n", il->firmware_name, - ucode_raw->size); - - /* Make sure that we got at least the API version number */ - if (ucode_raw->size < 4) { - IL_ERR("File size way too small!\n"); - goto try_again; - } - - /* Data from ucode file: header followed by uCode images */ - ucode = (struct il_ucode_header *)ucode_raw->data; - - err = il4965_load_firmware(il, ucode_raw, &pieces); - - if (err) - goto try_again; - - api_ver = IL_UCODE_API(il->ucode_ver); - - /* - * api_ver should match the api version forming part of the - * firmware filename ... but we don't check for that and only rely - * on the API version read from firmware header from here on forward - */ - if (api_ver < api_min || api_ver > api_max) { - IL_ERR("Driver unable to support your firmware API. " - "Driver supports v%u, firmware is v%u.\n", api_max, - api_ver); - goto try_again; - } - - if (api_ver != api_max) - IL_ERR("Firmware has old API version. Expected v%u, " - "got v%u. New firmware can be obtained " - "from http://www.intellinuxwireless.org.\n", api_max, - api_ver); - - IL_INFO("loaded firmware version %u.%u.%u.%u\n", - IL_UCODE_MAJOR(il->ucode_ver), IL_UCODE_MINOR(il->ucode_ver), - IL_UCODE_API(il->ucode_ver), IL_UCODE_SERIAL(il->ucode_ver)); - - snprintf(il->hw->wiphy->fw_version, sizeof(il->hw->wiphy->fw_version), - "%u.%u.%u.%u", IL_UCODE_MAJOR(il->ucode_ver), - IL_UCODE_MINOR(il->ucode_ver), IL_UCODE_API(il->ucode_ver), - IL_UCODE_SERIAL(il->ucode_ver)); - - /* - * For any of the failures below (before allocating pci memory) - * we will try to load a version with a smaller API -- maybe the - * user just got a corrupted version of the latest API. - */ - - D_INFO("f/w package hdr ucode version raw = 0x%x\n", il->ucode_ver); - D_INFO("f/w package hdr runtime inst size = %Zd\n", pieces.inst_size); - D_INFO("f/w package hdr runtime data size = %Zd\n", pieces.data_size); - D_INFO("f/w package hdr init inst size = %Zd\n", pieces.init_size); - D_INFO("f/w package hdr init data size = %Zd\n", pieces.init_data_size); - D_INFO("f/w package hdr boot inst size = %Zd\n", pieces.boot_size); - - /* Verify that uCode images will fit in card's SRAM */ - if (pieces.inst_size > il->hw_params.max_inst_size) { - IL_ERR("uCode instr len %Zd too large to fit in\n", - pieces.inst_size); - goto try_again; - } - - if (pieces.data_size > il->hw_params.max_data_size) { - IL_ERR("uCode data len %Zd too large to fit in\n", - pieces.data_size); - goto try_again; - } - - if (pieces.init_size > il->hw_params.max_inst_size) { - IL_ERR("uCode init instr len %Zd too large to fit in\n", - pieces.init_size); - goto try_again; - } - - if (pieces.init_data_size > il->hw_params.max_data_size) { - IL_ERR("uCode init data len %Zd too large to fit in\n", - pieces.init_data_size); - goto try_again; - } - - if (pieces.boot_size > il->hw_params.max_bsm_size) { - IL_ERR("uCode boot instr len %Zd too large to fit in\n", - pieces.boot_size); - goto try_again; - } - - /* Allocate ucode buffers for card's bus-master loading ... */ - - /* Runtime instructions and 2 copies of data: - * 1) unmodified from disk - * 2) backup cache for save/restore during power-downs */ - il->ucode_code.len = pieces.inst_size; - il_alloc_fw_desc(il->pci_dev, &il->ucode_code); - - il->ucode_data.len = pieces.data_size; - il_alloc_fw_desc(il->pci_dev, &il->ucode_data); - - il->ucode_data_backup.len = pieces.data_size; - il_alloc_fw_desc(il->pci_dev, &il->ucode_data_backup); - - if (!il->ucode_code.v_addr || !il->ucode_data.v_addr || - !il->ucode_data_backup.v_addr) - goto err_pci_alloc; - - /* Initialization instructions and data */ - if (pieces.init_size && pieces.init_data_size) { - il->ucode_init.len = pieces.init_size; - il_alloc_fw_desc(il->pci_dev, &il->ucode_init); - - il->ucode_init_data.len = pieces.init_data_size; - il_alloc_fw_desc(il->pci_dev, &il->ucode_init_data); - - if (!il->ucode_init.v_addr || !il->ucode_init_data.v_addr) - goto err_pci_alloc; - } - - /* Bootstrap (instructions only, no data) */ - if (pieces.boot_size) { - il->ucode_boot.len = pieces.boot_size; - il_alloc_fw_desc(il->pci_dev, &il->ucode_boot); - - if (!il->ucode_boot.v_addr) - goto err_pci_alloc; - } - - /* Now that we can no longer fail, copy information */ - - il->sta_key_max_num = STA_KEY_MAX_NUM; - - /* Copy images into buffers for card's bus-master reads ... */ - - /* Runtime instructions (first block of data in file) */ - D_INFO("Copying (but not loading) uCode instr len %Zd\n", - pieces.inst_size); - memcpy(il->ucode_code.v_addr, pieces.inst, pieces.inst_size); - - D_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n", - il->ucode_code.v_addr, (u32) il->ucode_code.p_addr); - - /* - * Runtime data - * NOTE: Copy into backup buffer will be done in il_up() - */ - D_INFO("Copying (but not loading) uCode data len %Zd\n", - pieces.data_size); - memcpy(il->ucode_data.v_addr, pieces.data, pieces.data_size); - memcpy(il->ucode_data_backup.v_addr, pieces.data, pieces.data_size); - - /* Initialization instructions */ - if (pieces.init_size) { - D_INFO("Copying (but not loading) init instr len %Zd\n", - pieces.init_size); - memcpy(il->ucode_init.v_addr, pieces.init, pieces.init_size); - } - - /* Initialization data */ - if (pieces.init_data_size) { - D_INFO("Copying (but not loading) init data len %Zd\n", - pieces.init_data_size); - memcpy(il->ucode_init_data.v_addr, pieces.init_data, - pieces.init_data_size); - } - - /* Bootstrap instructions */ - D_INFO("Copying (but not loading) boot instr len %Zd\n", - pieces.boot_size); - memcpy(il->ucode_boot.v_addr, pieces.boot, pieces.boot_size); - - /* - * figure out the offset of chain noise reset and gain commands - * base on the size of standard phy calibration commands table size - */ - il->_4965.phy_calib_chain_noise_reset_cmd = - standard_phy_calibration_size; - il->_4965.phy_calib_chain_noise_gain_cmd = - standard_phy_calibration_size + 1; - - /************************************************** - * This is still part of probe() in a sense... - * - * 9. Setup and register with mac80211 and debugfs - **************************************************/ - err = il4965_mac_setup_register(il, max_probe_length); - if (err) - goto out_unbind; - - err = il_dbgfs_register(il, DRV_NAME); - if (err) - IL_ERR("failed to create debugfs files. Ignoring error: %d\n", - err); - - err = sysfs_create_group(&il->pci_dev->dev.kobj, &il_attribute_group); - if (err) { - IL_ERR("failed to create sysfs device attributes\n"); - goto out_unbind; - } - - /* We have our copies now, allow OS release its copies */ - release_firmware(ucode_raw); - complete(&il->_4965.firmware_loading_complete); - return; - -try_again: - /* try next, if any */ - if (il4965_request_firmware(il, false)) - goto out_unbind; - release_firmware(ucode_raw); - return; - -err_pci_alloc: - IL_ERR("failed to allocate pci memory\n"); - il4965_dealloc_ucode_pci(il); -out_unbind: - complete(&il->_4965.firmware_loading_complete); - device_release_driver(&il->pci_dev->dev); - release_firmware(ucode_raw); -} - -static const char *const desc_lookup_text[] = { - "OK", - "FAIL", - "BAD_PARAM", - "BAD_CHECKSUM", - "NMI_INTERRUPT_WDG", - "SYSASSERT", - "FATAL_ERROR", - "BAD_COMMAND", - "HW_ERROR_TUNE_LOCK", - "HW_ERROR_TEMPERATURE", - "ILLEGAL_CHAN_FREQ", - "VCC_NOT_STBL", - "FH49_ERROR", - "NMI_INTERRUPT_HOST", - "NMI_INTERRUPT_ACTION_PT", - "NMI_INTERRUPT_UNKNOWN", - "UCODE_VERSION_MISMATCH", - "HW_ERROR_ABS_LOCK", - "HW_ERROR_CAL_LOCK_FAIL", - "NMI_INTERRUPT_INST_ACTION_PT", - "NMI_INTERRUPT_DATA_ACTION_PT", - "NMI_TRM_HW_ER", - "NMI_INTERRUPT_TRM", - "NMI_INTERRUPT_BREAK_POINT", - "DEBUG_0", - "DEBUG_1", - "DEBUG_2", - "DEBUG_3", -}; - -static struct { - char *name; - u8 num; -} advanced_lookup[] = { - { - "NMI_INTERRUPT_WDG", 0x34}, { - "SYSASSERT", 0x35}, { - "UCODE_VERSION_MISMATCH", 0x37}, { - "BAD_COMMAND", 0x38}, { - "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C}, { - "FATAL_ERROR", 0x3D}, { - "NMI_TRM_HW_ERR", 0x46}, { - "NMI_INTERRUPT_TRM", 0x4C}, { - "NMI_INTERRUPT_BREAK_POINT", 0x54}, { - "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C}, { - "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64}, { - "NMI_INTERRUPT_HOST", 0x66}, { - "NMI_INTERRUPT_ACTION_PT", 0x7C}, { - "NMI_INTERRUPT_UNKNOWN", 0x84}, { - "NMI_INTERRUPT_INST_ACTION_PT", 0x86}, { -"ADVANCED_SYSASSERT", 0},}; - -static const char * -il4965_desc_lookup(u32 num) -{ - int i; - int max = ARRAY_SIZE(desc_lookup_text); - - if (num < max) - return desc_lookup_text[num]; - - max = ARRAY_SIZE(advanced_lookup) - 1; - for (i = 0; i < max; i++) { - if (advanced_lookup[i].num == num) - break; - } - return advanced_lookup[i].name; -} - -#define ERROR_START_OFFSET (1 * sizeof(u32)) -#define ERROR_ELEM_SIZE (7 * sizeof(u32)) - -void -il4965_dump_nic_error_log(struct il_priv *il) -{ - u32 data2, line; - u32 desc, time, count, base, data1; - u32 blink1, blink2, ilink1, ilink2; - u32 pc, hcmd; - - if (il->ucode_type == UCODE_INIT) - base = le32_to_cpu(il->card_alive_init.error_event_table_ptr); - else - base = le32_to_cpu(il->card_alive.error_event_table_ptr); - - if (!il->ops->is_valid_rtc_data_addr(base)) { - IL_ERR("Not valid error log pointer 0x%08X for %s uCode\n", - base, (il->ucode_type == UCODE_INIT) ? "Init" : "RT"); - return; - } - - count = il_read_targ_mem(il, base); - - if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) { - IL_ERR("Start IWL Error Log Dump:\n"); - IL_ERR("Status: 0x%08lX, count: %d\n", il->status, count); - } - - desc = il_read_targ_mem(il, base + 1 * sizeof(u32)); - il->isr_stats.err_code = desc; - pc = il_read_targ_mem(il, base + 2 * sizeof(u32)); - blink1 = il_read_targ_mem(il, base + 3 * sizeof(u32)); - blink2 = il_read_targ_mem(il, base + 4 * sizeof(u32)); - ilink1 = il_read_targ_mem(il, base + 5 * sizeof(u32)); - ilink2 = il_read_targ_mem(il, base + 6 * sizeof(u32)); - data1 = il_read_targ_mem(il, base + 7 * sizeof(u32)); - data2 = il_read_targ_mem(il, base + 8 * sizeof(u32)); - line = il_read_targ_mem(il, base + 9 * sizeof(u32)); - time = il_read_targ_mem(il, base + 11 * sizeof(u32)); - hcmd = il_read_targ_mem(il, base + 22 * sizeof(u32)); - - IL_ERR("Desc Time " - "data1 data2 line\n"); - IL_ERR("%-28s (0x%04X) %010u 0x%08X 0x%08X %u\n", - il4965_desc_lookup(desc), desc, time, data1, data2, line); - IL_ERR("pc blink1 blink2 ilink1 ilink2 hcmd\n"); - IL_ERR("0x%05X 0x%05X 0x%05X 0x%05X 0x%05X 0x%05X\n", pc, blink1, - blink2, ilink1, ilink2, hcmd); -} - -static void -il4965_rf_kill_ct_config(struct il_priv *il) -{ - struct il_ct_kill_config cmd; - unsigned long flags; - int ret = 0; - - spin_lock_irqsave(&il->lock, flags); - _il_wr(il, CSR_UCODE_DRV_GP1_CLR, - CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT); - spin_unlock_irqrestore(&il->lock, flags); - - cmd.critical_temperature_R = - cpu_to_le32(il->hw_params.ct_kill_threshold); - - ret = il_send_cmd_pdu(il, C_CT_KILL_CONFIG, sizeof(cmd), &cmd); - if (ret) - IL_ERR("C_CT_KILL_CONFIG failed\n"); - else - D_INFO("C_CT_KILL_CONFIG " "succeeded, " - "critical temperature is %d\n", - il->hw_params.ct_kill_threshold); -} - -static const s8 default_queue_to_tx_fifo[] = { - IL_TX_FIFO_VO, - IL_TX_FIFO_VI, - IL_TX_FIFO_BE, - IL_TX_FIFO_BK, - IL49_CMD_FIFO_NUM, - IL_TX_FIFO_UNUSED, - IL_TX_FIFO_UNUSED, -}; - -#define IL_MASK(lo, hi) ((1 << (hi)) | ((1 << (hi)) - (1 << (lo)))) - -static int -il4965_alive_notify(struct il_priv *il) -{ - u32 a; - unsigned long flags; - int i, chan; - u32 reg_val; - - spin_lock_irqsave(&il->lock, flags); - - /* Clear 4965's internal Tx Scheduler data base */ - il->scd_base_addr = il_rd_prph(il, IL49_SCD_SRAM_BASE_ADDR); - a = il->scd_base_addr + IL49_SCD_CONTEXT_DATA_OFFSET; - for (; a < il->scd_base_addr + IL49_SCD_TX_STTS_BITMAP_OFFSET; a += 4) - il_write_targ_mem(il, a, 0); - for (; a < il->scd_base_addr + IL49_SCD_TRANSLATE_TBL_OFFSET; a += 4) - il_write_targ_mem(il, a, 0); - for (; - a < - il->scd_base_addr + - IL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(il->hw_params.max_txq_num); - a += 4) - il_write_targ_mem(il, a, 0); - - /* Tel 4965 where to find Tx byte count tables */ - il_wr_prph(il, IL49_SCD_DRAM_BASE_ADDR, il->scd_bc_tbls.dma >> 10); - - /* Enable DMA channel */ - for (chan = 0; chan < FH49_TCSR_CHNL_NUM; chan++) - il_wr(il, FH49_TCSR_CHNL_TX_CONFIG_REG(chan), - FH49_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE | - FH49_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE); - - /* Update FH chicken bits */ - reg_val = il_rd(il, FH49_TX_CHICKEN_BITS_REG); - il_wr(il, FH49_TX_CHICKEN_BITS_REG, - reg_val | FH49_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN); - - /* Disable chain mode for all queues */ - il_wr_prph(il, IL49_SCD_QUEUECHAIN_SEL, 0); - - /* Initialize each Tx queue (including the command queue) */ - for (i = 0; i < il->hw_params.max_txq_num; i++) { - - /* TFD circular buffer read/write idxes */ - il_wr_prph(il, IL49_SCD_QUEUE_RDPTR(i), 0); - il_wr(il, HBUS_TARG_WRPTR, 0 | (i << 8)); - - /* Max Tx Window size for Scheduler-ACK mode */ - il_write_targ_mem(il, - il->scd_base_addr + - IL49_SCD_CONTEXT_QUEUE_OFFSET(i), - (SCD_WIN_SIZE << - IL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) & - IL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK); - - /* Frame limit */ - il_write_targ_mem(il, - il->scd_base_addr + - IL49_SCD_CONTEXT_QUEUE_OFFSET(i) + - sizeof(u32), - (SCD_FRAME_LIMIT << - IL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) & - IL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK); - - } - il_wr_prph(il, IL49_SCD_INTERRUPT_MASK, - (1 << il->hw_params.max_txq_num) - 1); - - /* Activate all Tx DMA/FIFO channels */ - il4965_txq_set_sched(il, IL_MASK(0, 6)); - - il4965_set_wr_ptrs(il, IL_DEFAULT_CMD_QUEUE_NUM, 0); - - /* make sure all queue are not stopped */ - memset(&il->queue_stopped[0], 0, sizeof(il->queue_stopped)); - for (i = 0; i < 4; i++) - atomic_set(&il->queue_stop_count[i], 0); - - /* reset to 0 to enable all the queue first */ - il->txq_ctx_active_msk = 0; - /* Map each Tx/cmd queue to its corresponding fifo */ - BUILD_BUG_ON(ARRAY_SIZE(default_queue_to_tx_fifo) != 7); - - for (i = 0; i < ARRAY_SIZE(default_queue_to_tx_fifo); i++) { - int ac = default_queue_to_tx_fifo[i]; - - il_txq_ctx_activate(il, i); - - if (ac == IL_TX_FIFO_UNUSED) - continue; - - il4965_tx_queue_set_status(il, &il->txq[i], ac, 0); - } - - spin_unlock_irqrestore(&il->lock, flags); - - return 0; -} - -/** - * il4965_alive_start - called after N_ALIVE notification received - * from protocol/runtime uCode (initialization uCode's - * Alive gets handled by il_init_alive_start()). - */ -static void -il4965_alive_start(struct il_priv *il) -{ - int ret = 0; - - D_INFO("Runtime Alive received.\n"); - - if (il->card_alive.is_valid != UCODE_VALID_OK) { - /* We had an error bringing up the hardware, so take it - * all the way back down so we can try again */ - D_INFO("Alive failed.\n"); - goto restart; - } - - /* Initialize uCode has loaded Runtime uCode ... verify inst image. - * This is a paranoid check, because we would not have gotten the - * "runtime" alive if code weren't properly loaded. */ - if (il4965_verify_ucode(il)) { - /* Runtime instruction load was bad; - * take it all the way back down so we can try again */ - D_INFO("Bad runtime uCode load.\n"); - goto restart; - } - - ret = il4965_alive_notify(il); - if (ret) { - IL_WARN("Could not complete ALIVE transition [ntf]: %d\n", ret); - goto restart; - } - - /* After the ALIVE response, we can send host commands to the uCode */ - set_bit(S_ALIVE, &il->status); - - /* Enable watchdog to monitor the driver tx queues */ - il_setup_watchdog(il); - - if (il_is_rfkill(il)) - return; - - ieee80211_wake_queues(il->hw); - - il->active_rate = RATES_MASK; - - il_power_update_mode(il, true); - D_INFO("Updated power mode\n"); - - if (il_is_associated(il)) { - struct il_rxon_cmd *active_rxon = - (struct il_rxon_cmd *)&il->active; - /* apply any changes in staging */ - il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; - active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; - } else { - /* Initialize our rx_config data */ - il_connection_init_rx_config(il); - - if (il->ops->set_rxon_chain) - il->ops->set_rxon_chain(il); - } - - /* Configure bluetooth coexistence if enabled */ - il_send_bt_config(il); - - il4965_reset_run_time_calib(il); - - set_bit(S_READY, &il->status); - - /* Configure the adapter for unassociated operation */ - il_commit_rxon(il); - - /* At this point, the NIC is initialized and operational */ - il4965_rf_kill_ct_config(il); - - D_INFO("ALIVE processing complete.\n"); - wake_up(&il->wait_command_queue); - - return; - -restart: - queue_work(il->workqueue, &il->restart); -} - -static void il4965_cancel_deferred_work(struct il_priv *il); - -static void -__il4965_down(struct il_priv *il) -{ - unsigned long flags; - int exit_pending; - - D_INFO(DRV_NAME " is going down\n"); - - il_scan_cancel_timeout(il, 200); - - exit_pending = test_and_set_bit(S_EXIT_PENDING, &il->status); - - /* Stop TX queues watchdog. We need to have S_EXIT_PENDING bit set - * to prevent rearm timer */ - del_timer_sync(&il->watchdog); - - il_clear_ucode_stations(il); - - /* FIXME: race conditions ? */ - spin_lock_irq(&il->sta_lock); - /* - * Remove all key information that is not stored as part - * of station information since mac80211 may not have had - * a chance to remove all the keys. When device is - * reconfigured by mac80211 after an error all keys will - * be reconfigured. - */ - memset(il->_4965.wep_keys, 0, sizeof(il->_4965.wep_keys)); - il->_4965.key_mapping_keys = 0; - spin_unlock_irq(&il->sta_lock); - - il_dealloc_bcast_stations(il); - il_clear_driver_stations(il); - - /* Unblock any waiting calls */ - wake_up_all(&il->wait_command_queue); - - /* Wipe out the EXIT_PENDING status bit if we are not actually - * exiting the module */ - if (!exit_pending) - clear_bit(S_EXIT_PENDING, &il->status); - - /* stop and reset the on-board processor */ - _il_wr(il, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); - - /* tell the device to stop sending interrupts */ - spin_lock_irqsave(&il->lock, flags); - il_disable_interrupts(il); - spin_unlock_irqrestore(&il->lock, flags); - il4965_synchronize_irq(il); - - if (il->mac80211_registered) - ieee80211_stop_queues(il->hw); - - /* If we have not previously called il_init() then - * clear all bits but the RF Kill bit and return */ - if (!il_is_init(il)) { - il->status = - test_bit(S_RFKILL, &il->status) << S_RFKILL | - test_bit(S_GEO_CONFIGURED, &il->status) << S_GEO_CONFIGURED | - test_bit(S_EXIT_PENDING, &il->status) << S_EXIT_PENDING; - goto exit; - } - - /* ...otherwise clear out all the status bits but the RF Kill - * bit and continue taking the NIC down. */ - il->status &= - test_bit(S_RFKILL, &il->status) << S_RFKILL | - test_bit(S_GEO_CONFIGURED, &il->status) << S_GEO_CONFIGURED | - test_bit(S_FW_ERROR, &il->status) << S_FW_ERROR | - test_bit(S_EXIT_PENDING, &il->status) << S_EXIT_PENDING; - - /* - * We disabled and synchronized interrupt, and priv->mutex is taken, so - * here is the only thread which will program device registers, but - * still have lockdep assertions, so we are taking reg_lock. - */ - spin_lock_irq(&il->reg_lock); - /* FIXME: il_grab_nic_access if rfkill is off ? */ - - il4965_txq_ctx_stop(il); - il4965_rxq_stop(il); - /* Power-down device's busmaster DMA clocks */ - _il_wr_prph(il, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT); - udelay(5); - /* Make sure (redundant) we've released our request to stay awake */ - _il_clear_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); - /* Stop the device, and put it in low power state */ - _il_apm_stop(il); - - spin_unlock_irq(&il->reg_lock); - - il4965_txq_ctx_unmap(il); -exit: - memset(&il->card_alive, 0, sizeof(struct il_alive_resp)); - - dev_kfree_skb(il->beacon_skb); - il->beacon_skb = NULL; - - /* clear out any free frames */ - il4965_clear_free_frames(il); -} - -static void -il4965_down(struct il_priv *il) -{ - mutex_lock(&il->mutex); - __il4965_down(il); - mutex_unlock(&il->mutex); - - il4965_cancel_deferred_work(il); -} - - -static void -il4965_set_hw_ready(struct il_priv *il) -{ - int ret; - - il_set_bit(il, CSR_HW_IF_CONFIG_REG, - CSR_HW_IF_CONFIG_REG_BIT_NIC_READY); - - /* See if we got it */ - ret = _il_poll_bit(il, CSR_HW_IF_CONFIG_REG, - CSR_HW_IF_CONFIG_REG_BIT_NIC_READY, - CSR_HW_IF_CONFIG_REG_BIT_NIC_READY, - 100); - if (ret >= 0) - il->hw_ready = true; - - D_INFO("hardware %s ready\n", (il->hw_ready) ? "" : "not"); -} - -static void -il4965_prepare_card_hw(struct il_priv *il) -{ - int ret; - - il->hw_ready = false; - - il4965_set_hw_ready(il); - if (il->hw_ready) - return; - - /* If HW is not ready, prepare the conditions to check again */ - il_set_bit(il, CSR_HW_IF_CONFIG_REG, CSR_HW_IF_CONFIG_REG_PREPARE); - - ret = - _il_poll_bit(il, CSR_HW_IF_CONFIG_REG, - ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, - CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000); - - /* HW should be ready by now, check again. */ - if (ret != -ETIMEDOUT) - il4965_set_hw_ready(il); -} - -#define MAX_HW_RESTARTS 5 - -static int -__il4965_up(struct il_priv *il) -{ - int i; - int ret; - - if (test_bit(S_EXIT_PENDING, &il->status)) { - IL_WARN("Exit pending; will not bring the NIC up\n"); - return -EIO; - } - - if (!il->ucode_data_backup.v_addr || !il->ucode_data.v_addr) { - IL_ERR("ucode not available for device bringup\n"); - return -EIO; - } - - ret = il4965_alloc_bcast_station(il); - if (ret) { - il_dealloc_bcast_stations(il); - return ret; - } - - il4965_prepare_card_hw(il); - if (!il->hw_ready) { - IL_ERR("HW not ready\n"); - return -EIO; - } - - /* If platform's RF_KILL switch is NOT set to KILL */ - if (_il_rd(il, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW) - clear_bit(S_RFKILL, &il->status); - else { - set_bit(S_RFKILL, &il->status); - wiphy_rfkill_set_hw_state(il->hw->wiphy, true); - - il_enable_rfkill_int(il); - IL_WARN("Radio disabled by HW RF Kill switch\n"); - return 0; - } - - _il_wr(il, CSR_INT, 0xFFFFFFFF); - - /* must be initialised before il_hw_nic_init */ - il->cmd_queue = IL_DEFAULT_CMD_QUEUE_NUM; - - ret = il4965_hw_nic_init(il); - if (ret) { - IL_ERR("Unable to init nic\n"); - return ret; - } - - /* make sure rfkill handshake bits are cleared */ - _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); - _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); - - /* clear (again), then enable host interrupts */ - _il_wr(il, CSR_INT, 0xFFFFFFFF); - il_enable_interrupts(il); - - /* really make sure rfkill handshake bits are cleared */ - _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); - _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); - - /* Copy original ucode data image from disk into backup cache. - * This will be used to initialize the on-board processor's - * data SRAM for a clean start when the runtime program first loads. */ - memcpy(il->ucode_data_backup.v_addr, il->ucode_data.v_addr, - il->ucode_data.len); - - for (i = 0; i < MAX_HW_RESTARTS; i++) { - - /* load bootstrap state machine, - * load bootstrap program into processor's memory, - * prepare to load the "initialize" uCode */ - ret = il->ops->load_ucode(il); - - if (ret) { - IL_ERR("Unable to set up bootstrap uCode: %d\n", ret); - continue; - } - - /* start card; "initialize" will load runtime ucode */ - il4965_nic_start(il); - - D_INFO(DRV_NAME " is coming up\n"); - - return 0; - } - - set_bit(S_EXIT_PENDING, &il->status); - __il4965_down(il); - clear_bit(S_EXIT_PENDING, &il->status); - - /* tried to restart and config the device for as long as our - * patience could withstand */ - IL_ERR("Unable to initialize device after %d attempts.\n", i); - return -EIO; -} - -/***************************************************************************** - * - * Workqueue callbacks - * - *****************************************************************************/ - -static void -il4965_bg_init_alive_start(struct work_struct *data) -{ - struct il_priv *il = - container_of(data, struct il_priv, init_alive_start.work); - - mutex_lock(&il->mutex); - if (test_bit(S_EXIT_PENDING, &il->status)) - goto out; - - il->ops->init_alive_start(il); -out: - mutex_unlock(&il->mutex); -} - -static void -il4965_bg_alive_start(struct work_struct *data) -{ - struct il_priv *il = - container_of(data, struct il_priv, alive_start.work); - - mutex_lock(&il->mutex); - if (test_bit(S_EXIT_PENDING, &il->status)) - goto out; - - il4965_alive_start(il); -out: - mutex_unlock(&il->mutex); -} - -static void -il4965_bg_run_time_calib_work(struct work_struct *work) -{ - struct il_priv *il = container_of(work, struct il_priv, - run_time_calib_work); - - mutex_lock(&il->mutex); - - if (test_bit(S_EXIT_PENDING, &il->status) || - test_bit(S_SCANNING, &il->status)) { - mutex_unlock(&il->mutex); - return; - } - - if (il->start_calib) { - il4965_chain_noise_calibration(il, (void *)&il->_4965.stats); - il4965_sensitivity_calibration(il, (void *)&il->_4965.stats); - } - - mutex_unlock(&il->mutex); -} - -static void -il4965_bg_restart(struct work_struct *data) -{ - struct il_priv *il = container_of(data, struct il_priv, restart); - - if (test_bit(S_EXIT_PENDING, &il->status)) - return; - - if (test_and_clear_bit(S_FW_ERROR, &il->status)) { - mutex_lock(&il->mutex); - il->is_open = 0; - - __il4965_down(il); - - mutex_unlock(&il->mutex); - il4965_cancel_deferred_work(il); - ieee80211_restart_hw(il->hw); - } else { - il4965_down(il); - - mutex_lock(&il->mutex); - if (test_bit(S_EXIT_PENDING, &il->status)) { - mutex_unlock(&il->mutex); - return; - } - - __il4965_up(il); - mutex_unlock(&il->mutex); - } -} - -static void -il4965_bg_rx_replenish(struct work_struct *data) -{ - struct il_priv *il = container_of(data, struct il_priv, rx_replenish); - - if (test_bit(S_EXIT_PENDING, &il->status)) - return; - - mutex_lock(&il->mutex); - il4965_rx_replenish(il); - mutex_unlock(&il->mutex); -} - -/***************************************************************************** - * - * mac80211 entry point functions - * - *****************************************************************************/ - -#define UCODE_READY_TIMEOUT (4 * HZ) - -/* - * Not a mac80211 entry point function, but it fits in with all the - * other mac80211 functions grouped here. - */ -static int -il4965_mac_setup_register(struct il_priv *il, u32 max_probe_length) -{ - int ret; - struct ieee80211_hw *hw = il->hw; - - hw->rate_control_algorithm = "iwl-4965-rs"; - - /* Tell mac80211 our characteristics */ - ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); - ieee80211_hw_set(hw, SUPPORTS_PS); - ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); - ieee80211_hw_set(hw, SPECTRUM_MGMT); - ieee80211_hw_set(hw, NEED_DTIM_BEFORE_ASSOC); - ieee80211_hw_set(hw, SIGNAL_DBM); - ieee80211_hw_set(hw, AMPDU_AGGREGATION); - if (il->cfg->sku & IL_SKU_N) - hw->wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS | - NL80211_FEATURE_STATIC_SMPS; - - hw->sta_data_size = sizeof(struct il_station_priv); - hw->vif_data_size = sizeof(struct il_vif_priv); - - hw->wiphy->interface_modes = - BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC); - - hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; - hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | - REGULATORY_DISABLE_BEACON_HINTS; - - /* - * For now, disable PS by default because it affects - * RX performance significantly. - */ - hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; - - hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; - /* we create the 802.11 header and a zero-length SSID element */ - hw->wiphy->max_scan_ie_len = max_probe_length - 24 - 2; - - /* Default value; 4 EDCA QOS priorities */ - hw->queues = 4; - - hw->max_listen_interval = IL_CONN_MAX_LISTEN_INTERVAL; - - if (il->bands[IEEE80211_BAND_2GHZ].n_channels) - il->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = - &il->bands[IEEE80211_BAND_2GHZ]; - if (il->bands[IEEE80211_BAND_5GHZ].n_channels) - il->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = - &il->bands[IEEE80211_BAND_5GHZ]; - - il_leds_init(il); - - ret = ieee80211_register_hw(il->hw); - if (ret) { - IL_ERR("Failed to register hw (error %d)\n", ret); - return ret; - } - il->mac80211_registered = 1; - - return 0; -} - -int -il4965_mac_start(struct ieee80211_hw *hw) -{ - struct il_priv *il = hw->priv; - int ret; - - D_MAC80211("enter\n"); - - /* we should be verifying the device is ready to be opened */ - mutex_lock(&il->mutex); - ret = __il4965_up(il); - mutex_unlock(&il->mutex); - - if (ret) - return ret; - - if (il_is_rfkill(il)) - goto out; - - D_INFO("Start UP work done.\n"); - - /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from - * mac80211 will not be run successfully. */ - ret = wait_event_timeout(il->wait_command_queue, - test_bit(S_READY, &il->status), - UCODE_READY_TIMEOUT); - if (!ret) { - if (!test_bit(S_READY, &il->status)) { - IL_ERR("START_ALIVE timeout after %dms.\n", - jiffies_to_msecs(UCODE_READY_TIMEOUT)); - return -ETIMEDOUT; - } - } - - il4965_led_enable(il); - -out: - il->is_open = 1; - D_MAC80211("leave\n"); - return 0; -} - -void -il4965_mac_stop(struct ieee80211_hw *hw) -{ - struct il_priv *il = hw->priv; - - D_MAC80211("enter\n"); - - if (!il->is_open) - return; - - il->is_open = 0; - - il4965_down(il); - - flush_workqueue(il->workqueue); - - /* User space software may expect getting rfkill changes - * even if interface is down */ - _il_wr(il, CSR_INT, 0xFFFFFFFF); - il_enable_rfkill_int(il); - - D_MAC80211("leave\n"); -} - -void -il4965_mac_tx(struct ieee80211_hw *hw, - struct ieee80211_tx_control *control, - struct sk_buff *skb) -{ - struct il_priv *il = hw->priv; - - D_MACDUMP("enter\n"); - - D_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len, - ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate); - - if (il4965_tx_skb(il, control->sta, skb)) - dev_kfree_skb_any(skb); - - D_MACDUMP("leave\n"); -} - -void -il4965_mac_update_tkip_key(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - struct ieee80211_key_conf *keyconf, - struct ieee80211_sta *sta, u32 iv32, u16 * phase1key) -{ - struct il_priv *il = hw->priv; - - D_MAC80211("enter\n"); - - il4965_update_tkip_key(il, keyconf, sta, iv32, phase1key); - - D_MAC80211("leave\n"); -} - -int -il4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, - struct ieee80211_vif *vif, struct ieee80211_sta *sta, - struct ieee80211_key_conf *key) -{ - struct il_priv *il = hw->priv; - int ret; - u8 sta_id; - bool is_default_wep_key = false; - - D_MAC80211("enter\n"); - - if (il->cfg->mod_params->sw_crypto) { - D_MAC80211("leave - hwcrypto disabled\n"); - return -EOPNOTSUPP; - } - - /* - * To support IBSS RSN, don't program group keys in IBSS, the - * hardware will then not attempt to decrypt the frames. - */ - if (vif->type == NL80211_IFTYPE_ADHOC && - !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { - D_MAC80211("leave - ad-hoc group key\n"); - return -EOPNOTSUPP; - } - - sta_id = il_sta_id_or_broadcast(il, sta); - if (sta_id == IL_INVALID_STATION) - return -EINVAL; - - mutex_lock(&il->mutex); - il_scan_cancel_timeout(il, 100); - - /* - * If we are getting WEP group key and we didn't receive any key mapping - * so far, we are in legacy wep mode (group key only), otherwise we are - * in 1X mode. - * In legacy wep mode, we use another host command to the uCode. - */ - if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 || - key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) { - if (cmd == SET_KEY) - is_default_wep_key = !il->_4965.key_mapping_keys; - else - is_default_wep_key = - (key->hw_key_idx == HW_KEY_DEFAULT); - } - - switch (cmd) { - case SET_KEY: - if (is_default_wep_key) - ret = il4965_set_default_wep_key(il, key); - else - ret = il4965_set_dynamic_key(il, key, sta_id); - - D_MAC80211("enable hwcrypto key\n"); - break; - case DISABLE_KEY: - if (is_default_wep_key) - ret = il4965_remove_default_wep_key(il, key); - else - ret = il4965_remove_dynamic_key(il, key, sta_id); - - D_MAC80211("disable hwcrypto key\n"); - break; - default: - ret = -EINVAL; - } - - mutex_unlock(&il->mutex); - D_MAC80211("leave\n"); - - return ret; -} - -int -il4965_mac_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - enum ieee80211_ampdu_mlme_action action, - struct ieee80211_sta *sta, u16 tid, u16 * ssn, - u8 buf_size, bool amsdu) -{ - struct il_priv *il = hw->priv; - int ret = -EINVAL; - - D_HT("A-MPDU action on addr %pM tid %d\n", sta->addr, tid); - - if (!(il->cfg->sku & IL_SKU_N)) - return -EACCES; - - mutex_lock(&il->mutex); - - switch (action) { - case IEEE80211_AMPDU_RX_START: - D_HT("start Rx\n"); - ret = il4965_sta_rx_agg_start(il, sta, tid, *ssn); - break; - case IEEE80211_AMPDU_RX_STOP: - D_HT("stop Rx\n"); - ret = il4965_sta_rx_agg_stop(il, sta, tid); - if (test_bit(S_EXIT_PENDING, &il->status)) - ret = 0; - break; - case IEEE80211_AMPDU_TX_START: - D_HT("start Tx\n"); - ret = il4965_tx_agg_start(il, vif, sta, tid, ssn); - break; - case IEEE80211_AMPDU_TX_STOP_CONT: - case IEEE80211_AMPDU_TX_STOP_FLUSH: - case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: - D_HT("stop Tx\n"); - ret = il4965_tx_agg_stop(il, vif, sta, tid); - if (test_bit(S_EXIT_PENDING, &il->status)) - ret = 0; - break; - case IEEE80211_AMPDU_TX_OPERATIONAL: - ret = 0; - break; - } - mutex_unlock(&il->mutex); - - return ret; -} - -int -il4965_mac_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - struct ieee80211_sta *sta) -{ - struct il_priv *il = hw->priv; - struct il_station_priv *sta_priv = (void *)sta->drv_priv; - bool is_ap = vif->type == NL80211_IFTYPE_STATION; - int ret; - u8 sta_id; - - D_INFO("received request to add station %pM\n", sta->addr); - mutex_lock(&il->mutex); - D_INFO("proceeding to add station %pM\n", sta->addr); - sta_priv->common.sta_id = IL_INVALID_STATION; - - atomic_set(&sta_priv->pending_frames, 0); - - ret = - il_add_station_common(il, sta->addr, is_ap, sta, &sta_id); - if (ret) { - IL_ERR("Unable to add station %pM (%d)\n", sta->addr, ret); - /* Should we return success if return code is EEXIST ? */ - mutex_unlock(&il->mutex); - return ret; - } - - sta_priv->common.sta_id = sta_id; - - /* Initialize rate scaling */ - D_INFO("Initializing rate scaling for station %pM\n", sta->addr); - il4965_rs_rate_init(il, sta, sta_id); - mutex_unlock(&il->mutex); - - return 0; -} - -void -il4965_mac_channel_switch(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - struct ieee80211_channel_switch *ch_switch) -{ - struct il_priv *il = hw->priv; - const struct il_channel_info *ch_info; - struct ieee80211_conf *conf = &hw->conf; - struct ieee80211_channel *channel = ch_switch->chandef.chan; - struct il_ht_config *ht_conf = &il->current_ht_config; - u16 ch; - - D_MAC80211("enter\n"); - - mutex_lock(&il->mutex); - - if (il_is_rfkill(il)) - goto out; - - if (test_bit(S_EXIT_PENDING, &il->status) || - test_bit(S_SCANNING, &il->status) || - test_bit(S_CHANNEL_SWITCH_PENDING, &il->status)) - goto out; - - if (!il_is_associated(il)) - goto out; - - if (!il->ops->set_channel_switch) - goto out; - - ch = channel->hw_value; - if (le16_to_cpu(il->active.channel) == ch) - goto out; - - ch_info = il_get_channel_info(il, channel->band, ch); - if (!il_is_channel_valid(ch_info)) { - D_MAC80211("invalid channel\n"); - goto out; - } - - spin_lock_irq(&il->lock); - - il->current_ht_config.smps = conf->smps_mode; - - /* Configure HT40 channels */ - switch (cfg80211_get_chandef_type(&ch_switch->chandef)) { - case NL80211_CHAN_NO_HT: - case NL80211_CHAN_HT20: - il->ht.is_40mhz = false; - il->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE; - break; - case NL80211_CHAN_HT40MINUS: - il->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW; - il->ht.is_40mhz = true; - break; - case NL80211_CHAN_HT40PLUS: - il->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; - il->ht.is_40mhz = true; - break; - } - - if ((le16_to_cpu(il->staging.channel) != ch)) - il->staging.flags = 0; - - il_set_rxon_channel(il, channel); - il_set_rxon_ht(il, ht_conf); - il_set_flags_for_band(il, channel->band, il->vif); - - spin_unlock_irq(&il->lock); - - il_set_rate(il); - /* - * at this point, staging_rxon has the - * configuration for channel switch - */ - set_bit(S_CHANNEL_SWITCH_PENDING, &il->status); - il->switch_channel = cpu_to_le16(ch); - if (il->ops->set_channel_switch(il, ch_switch)) { - clear_bit(S_CHANNEL_SWITCH_PENDING, &il->status); - il->switch_channel = 0; - ieee80211_chswitch_done(il->vif, false); - } - -out: - mutex_unlock(&il->mutex); - D_MAC80211("leave\n"); -} - -void -il4965_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, - unsigned int *total_flags, u64 multicast) -{ - struct il_priv *il = hw->priv; - __le32 filter_or = 0, filter_nand = 0; - -#define CHK(test, flag) do { \ - if (*total_flags & (test)) \ - filter_or |= (flag); \ - else \ - filter_nand |= (flag); \ - } while (0) - - D_MAC80211("Enter: changed: 0x%x, total: 0x%x\n", changed_flags, - *total_flags); - - CHK(FIF_OTHER_BSS, RXON_FILTER_PROMISC_MSK); - /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */ - CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK); - CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK); - -#undef CHK - - mutex_lock(&il->mutex); - - il->staging.filter_flags &= ~filter_nand; - il->staging.filter_flags |= filter_or; - - /* - * Not committing directly because hardware can perform a scan, - * but we'll eventually commit the filter flags change anyway. - */ - - mutex_unlock(&il->mutex); - - /* - * Receiving all multicast frames is always enabled by the - * default flags setup in il_connection_init_rx_config() - * since we currently do not support programming multicast - * filters into the device. - */ - *total_flags &= - FIF_OTHER_BSS | FIF_ALLMULTI | - FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL; -} - -/***************************************************************************** - * - * driver setup and teardown - * - *****************************************************************************/ - -static void -il4965_bg_txpower_work(struct work_struct *work) -{ - struct il_priv *il = container_of(work, struct il_priv, - txpower_work); - - mutex_lock(&il->mutex); - - /* If a scan happened to start before we got here - * then just return; the stats notification will - * kick off another scheduled work to compensate for - * any temperature delta we missed here. */ - if (test_bit(S_EXIT_PENDING, &il->status) || - test_bit(S_SCANNING, &il->status)) - goto out; - - /* Regardless of if we are associated, we must reconfigure the - * TX power since frames can be sent on non-radar channels while - * not associated */ - il->ops->send_tx_power(il); - - /* Update last_temperature to keep is_calib_needed from running - * when it isn't needed... */ - il->last_temperature = il->temperature; -out: - mutex_unlock(&il->mutex); -} - -static void -il4965_setup_deferred_work(struct il_priv *il) -{ - il->workqueue = create_singlethread_workqueue(DRV_NAME); - - init_waitqueue_head(&il->wait_command_queue); - - INIT_WORK(&il->restart, il4965_bg_restart); - INIT_WORK(&il->rx_replenish, il4965_bg_rx_replenish); - INIT_WORK(&il->run_time_calib_work, il4965_bg_run_time_calib_work); - INIT_DELAYED_WORK(&il->init_alive_start, il4965_bg_init_alive_start); - INIT_DELAYED_WORK(&il->alive_start, il4965_bg_alive_start); - - il_setup_scan_deferred_work(il); - - INIT_WORK(&il->txpower_work, il4965_bg_txpower_work); - - setup_timer(&il->stats_periodic, il4965_bg_stats_periodic, - (unsigned long)il); - - setup_timer(&il->watchdog, il_bg_watchdog, (unsigned long)il); - - tasklet_init(&il->irq_tasklet, - (void (*)(unsigned long))il4965_irq_tasklet, - (unsigned long)il); -} - -static void -il4965_cancel_deferred_work(struct il_priv *il) -{ - cancel_work_sync(&il->txpower_work); - cancel_delayed_work_sync(&il->init_alive_start); - cancel_delayed_work(&il->alive_start); - cancel_work_sync(&il->run_time_calib_work); - - il_cancel_scan_deferred_work(il); - - del_timer_sync(&il->stats_periodic); -} - -static void -il4965_init_hw_rates(struct il_priv *il, struct ieee80211_rate *rates) -{ - int i; - - for (i = 0; i < RATE_COUNT_LEGACY; i++) { - rates[i].bitrate = il_rates[i].ieee * 5; - rates[i].hw_value = i; /* Rate scaling will work on idxes */ - rates[i].hw_value_short = i; - rates[i].flags = 0; - if ((i >= IL_FIRST_CCK_RATE) && (i <= IL_LAST_CCK_RATE)) { - /* - * If CCK != 1M then set short preamble rate flag. - */ - rates[i].flags |= - (il_rates[i].plcp == - RATE_1M_PLCP) ? 0 : IEEE80211_RATE_SHORT_PREAMBLE; - } - } -} - -/* - * Acquire il->lock before calling this function ! - */ -void -il4965_set_wr_ptrs(struct il_priv *il, int txq_id, u32 idx) -{ - il_wr(il, HBUS_TARG_WRPTR, (idx & 0xff) | (txq_id << 8)); - il_wr_prph(il, IL49_SCD_QUEUE_RDPTR(txq_id), idx); -} - -void -il4965_tx_queue_set_status(struct il_priv *il, struct il_tx_queue *txq, - int tx_fifo_id, int scd_retry) -{ - int txq_id = txq->q.id; - - /* Find out whether to activate Tx queue */ - int active = test_bit(txq_id, &il->txq_ctx_active_msk) ? 1 : 0; - - /* Set up and activate */ - il_wr_prph(il, IL49_SCD_QUEUE_STATUS_BITS(txq_id), - (active << IL49_SCD_QUEUE_STTS_REG_POS_ACTIVE) | - (tx_fifo_id << IL49_SCD_QUEUE_STTS_REG_POS_TXF) | - (scd_retry << IL49_SCD_QUEUE_STTS_REG_POS_WSL) | - (scd_retry << IL49_SCD_QUEUE_STTS_REG_POS_SCD_ACK) | - IL49_SCD_QUEUE_STTS_REG_MSK); - - txq->sched_retry = scd_retry; - - D_INFO("%s %s Queue %d on AC %d\n", active ? "Activate" : "Deactivate", - scd_retry ? "BA" : "AC", txq_id, tx_fifo_id); -} - -static const struct ieee80211_ops il4965_mac_ops = { - .tx = il4965_mac_tx, - .start = il4965_mac_start, - .stop = il4965_mac_stop, - .add_interface = il_mac_add_interface, - .remove_interface = il_mac_remove_interface, - .change_interface = il_mac_change_interface, - .config = il_mac_config, - .configure_filter = il4965_configure_filter, - .set_key = il4965_mac_set_key, - .update_tkip_key = il4965_mac_update_tkip_key, - .conf_tx = il_mac_conf_tx, - .reset_tsf = il_mac_reset_tsf, - .bss_info_changed = il_mac_bss_info_changed, - .ampdu_action = il4965_mac_ampdu_action, - .hw_scan = il_mac_hw_scan, - .sta_add = il4965_mac_sta_add, - .sta_remove = il_mac_sta_remove, - .channel_switch = il4965_mac_channel_switch, - .tx_last_beacon = il_mac_tx_last_beacon, - .flush = il_mac_flush, -}; - -static int -il4965_init_drv(struct il_priv *il) -{ - int ret; - - spin_lock_init(&il->sta_lock); - spin_lock_init(&il->hcmd_lock); - - INIT_LIST_HEAD(&il->free_frames); - - mutex_init(&il->mutex); - - il->ieee_channels = NULL; - il->ieee_rates = NULL; - il->band = IEEE80211_BAND_2GHZ; - - il->iw_mode = NL80211_IFTYPE_STATION; - il->current_ht_config.smps = IEEE80211_SMPS_STATIC; - il->missed_beacon_threshold = IL_MISSED_BEACON_THRESHOLD_DEF; - - /* initialize force reset */ - il->force_reset.reset_duration = IL_DELAY_NEXT_FORCE_FW_RELOAD; - - /* Choose which receivers/antennas to use */ - if (il->ops->set_rxon_chain) - il->ops->set_rxon_chain(il); - - il_init_scan_params(il); - - ret = il_init_channel_map(il); - if (ret) { - IL_ERR("initializing regulatory failed: %d\n", ret); - goto err; - } - - ret = il_init_geos(il); - if (ret) { - IL_ERR("initializing geos failed: %d\n", ret); - goto err_free_channel_map; - } - il4965_init_hw_rates(il, il->ieee_rates); - - return 0; - -err_free_channel_map: - il_free_channel_map(il); -err: - return ret; -} - -static void -il4965_uninit_drv(struct il_priv *il) -{ - il_free_geos(il); - il_free_channel_map(il); - kfree(il->scan_cmd); -} - -static void -il4965_hw_detect(struct il_priv *il) -{ - il->hw_rev = _il_rd(il, CSR_HW_REV); - il->hw_wa_rev = _il_rd(il, CSR_HW_REV_WA_REG); - il->rev_id = il->pci_dev->revision; - D_INFO("HW Revision ID = 0x%X\n", il->rev_id); -} - -static struct il_sensitivity_ranges il4965_sensitivity = { - .min_nrg_cck = 97, - .max_nrg_cck = 0, /* not used, set to 0 */ - - .auto_corr_min_ofdm = 85, - .auto_corr_min_ofdm_mrc = 170, - .auto_corr_min_ofdm_x1 = 105, - .auto_corr_min_ofdm_mrc_x1 = 220, - - .auto_corr_max_ofdm = 120, - .auto_corr_max_ofdm_mrc = 210, - .auto_corr_max_ofdm_x1 = 140, - .auto_corr_max_ofdm_mrc_x1 = 270, - - .auto_corr_min_cck = 125, - .auto_corr_max_cck = 200, - .auto_corr_min_cck_mrc = 200, - .auto_corr_max_cck_mrc = 400, - - .nrg_th_cck = 100, - .nrg_th_ofdm = 100, - - .barker_corr_th_min = 190, - .barker_corr_th_min_mrc = 390, - .nrg_th_cca = 62, -}; - -static void -il4965_set_hw_params(struct il_priv *il) -{ - il->hw_params.bcast_id = IL4965_BROADCAST_ID; - il->hw_params.max_rxq_size = RX_QUEUE_SIZE; - il->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG; - if (il->cfg->mod_params->amsdu_size_8K) - il->hw_params.rx_page_order = get_order(IL_RX_BUF_SIZE_8K); - else - il->hw_params.rx_page_order = get_order(IL_RX_BUF_SIZE_4K); - - il->hw_params.max_beacon_itrvl = IL_MAX_UCODE_BEACON_INTERVAL; - - if (il->cfg->mod_params->disable_11n) - il->cfg->sku &= ~IL_SKU_N; - - if (il->cfg->mod_params->num_of_queues >= IL_MIN_NUM_QUEUES && - il->cfg->mod_params->num_of_queues <= IL49_NUM_QUEUES) - il->cfg->num_of_queues = - il->cfg->mod_params->num_of_queues; - - il->hw_params.max_txq_num = il->cfg->num_of_queues; - il->hw_params.dma_chnl_num = FH49_TCSR_CHNL_NUM; - il->hw_params.scd_bc_tbls_size = - il->cfg->num_of_queues * - sizeof(struct il4965_scd_bc_tbl); - - il->hw_params.tfd_size = sizeof(struct il_tfd); - il->hw_params.max_stations = IL4965_STATION_COUNT; - il->hw_params.max_data_size = IL49_RTC_DATA_SIZE; - il->hw_params.max_inst_size = IL49_RTC_INST_SIZE; - il->hw_params.max_bsm_size = BSM_SRAM_SIZE; - il->hw_params.ht40_channel = BIT(IEEE80211_BAND_5GHZ); - - il->hw_params.rx_wrt_ptr_reg = FH49_RSCSR_CHNL0_WPTR; - - il->hw_params.tx_chains_num = il4965_num_of_ant(il->cfg->valid_tx_ant); - il->hw_params.rx_chains_num = il4965_num_of_ant(il->cfg->valid_rx_ant); - il->hw_params.valid_tx_ant = il->cfg->valid_tx_ant; - il->hw_params.valid_rx_ant = il->cfg->valid_rx_ant; - - il->hw_params.ct_kill_threshold = - CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY); - - il->hw_params.sens = &il4965_sensitivity; - il->hw_params.beacon_time_tsf_bits = IL4965_EXT_BEACON_TIME_POS; -} - -static int -il4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) -{ - int err = 0; - struct il_priv *il; - struct ieee80211_hw *hw; - struct il_cfg *cfg = (struct il_cfg *)(ent->driver_data); - unsigned long flags; - u16 pci_cmd; - - /************************ - * 1. Allocating HW data - ************************/ - - hw = ieee80211_alloc_hw(sizeof(struct il_priv), &il4965_mac_ops); - if (!hw) { - err = -ENOMEM; - goto out; - } - il = hw->priv; - il->hw = hw; - SET_IEEE80211_DEV(hw, &pdev->dev); - - D_INFO("*** LOAD DRIVER ***\n"); - il->cfg = cfg; - il->ops = &il4965_ops; -#ifdef CONFIG_IWLEGACY_DEBUGFS - il->debugfs_ops = &il4965_debugfs_ops; -#endif - il->pci_dev = pdev; - il->inta_mask = CSR_INI_SET_MASK; - - /************************** - * 2. Initializing PCI bus - **************************/ - pci_disable_link_state(pdev, - PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 | - PCIE_LINK_STATE_CLKPM); - - if (pci_enable_device(pdev)) { - err = -ENODEV; - goto out_ieee80211_free_hw; - } - - pci_set_master(pdev); - - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36)); - if (!err) - err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36)); - if (err) { - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); - if (!err) - err = - pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); - /* both attempts failed: */ - if (err) { - IL_WARN("No suitable DMA available.\n"); - goto out_pci_disable_device; - } - } - - err = pci_request_regions(pdev, DRV_NAME); - if (err) - goto out_pci_disable_device; - - pci_set_drvdata(pdev, il); - - /*********************** - * 3. Read REV register - ***********************/ - il->hw_base = pci_ioremap_bar(pdev, 0); - if (!il->hw_base) { - err = -ENODEV; - goto out_pci_release_regions; - } - - D_INFO("pci_resource_len = 0x%08llx\n", - (unsigned long long)pci_resource_len(pdev, 0)); - D_INFO("pci_resource_base = %p\n", il->hw_base); - - /* these spin locks will be used in apm_ops.init and EEPROM access - * we should init now - */ - spin_lock_init(&il->reg_lock); - spin_lock_init(&il->lock); - - /* - * stop and reset the on-board processor just in case it is in a - * strange state ... like being left stranded by a primary kernel - * and this is now the kdump kernel trying to start up - */ - _il_wr(il, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); - - il4965_hw_detect(il); - IL_INFO("Detected %s, REV=0x%X\n", il->cfg->name, il->hw_rev); - - /* We disable the RETRY_TIMEOUT register (0x41) to keep - * PCI Tx retries from interfering with C3 CPU state */ - pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); - - il4965_prepare_card_hw(il); - if (!il->hw_ready) { - IL_WARN("Failed, HW not ready\n"); - err = -EIO; - goto out_iounmap; - } - - /***************** - * 4. Read EEPROM - *****************/ - /* Read the EEPROM */ - err = il_eeprom_init(il); - if (err) { - IL_ERR("Unable to init EEPROM\n"); - goto out_iounmap; - } - err = il4965_eeprom_check_version(il); - if (err) - goto out_free_eeprom; - - /* extract MAC Address */ - il4965_eeprom_get_mac(il, il->addresses[0].addr); - D_INFO("MAC address: %pM\n", il->addresses[0].addr); - il->hw->wiphy->addresses = il->addresses; - il->hw->wiphy->n_addresses = 1; - - /************************ - * 5. Setup HW constants - ************************/ - il4965_set_hw_params(il); - - /******************* - * 6. Setup il - *******************/ - - err = il4965_init_drv(il); - if (err) - goto out_free_eeprom; - /* At this point both hw and il are initialized. */ - - /******************** - * 7. Setup services - ********************/ - spin_lock_irqsave(&il->lock, flags); - il_disable_interrupts(il); - spin_unlock_irqrestore(&il->lock, flags); - - pci_enable_msi(il->pci_dev); - - err = request_irq(il->pci_dev->irq, il_isr, IRQF_SHARED, DRV_NAME, il); - if (err) { - IL_ERR("Error allocating IRQ %d\n", il->pci_dev->irq); - goto out_disable_msi; - } - - il4965_setup_deferred_work(il); - il4965_setup_handlers(il); - - /********************************************* - * 8. Enable interrupts and read RFKILL state - *********************************************/ - - /* enable rfkill interrupt: hw bug w/a */ - pci_read_config_word(il->pci_dev, PCI_COMMAND, &pci_cmd); - if (pci_cmd & PCI_COMMAND_INTX_DISABLE) { - pci_cmd &= ~PCI_COMMAND_INTX_DISABLE; - pci_write_config_word(il->pci_dev, PCI_COMMAND, pci_cmd); - } - - il_enable_rfkill_int(il); - - /* If platform's RF_KILL switch is NOT set to KILL */ - if (_il_rd(il, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW) - clear_bit(S_RFKILL, &il->status); - else - set_bit(S_RFKILL, &il->status); - - wiphy_rfkill_set_hw_state(il->hw->wiphy, - test_bit(S_RFKILL, &il->status)); - - il_power_initialize(il); - - init_completion(&il->_4965.firmware_loading_complete); - - err = il4965_request_firmware(il, true); - if (err) - goto out_destroy_workqueue; - - return 0; - -out_destroy_workqueue: - destroy_workqueue(il->workqueue); - il->workqueue = NULL; - free_irq(il->pci_dev->irq, il); -out_disable_msi: - pci_disable_msi(il->pci_dev); - il4965_uninit_drv(il); -out_free_eeprom: - il_eeprom_free(il); -out_iounmap: - iounmap(il->hw_base); -out_pci_release_regions: - pci_release_regions(pdev); -out_pci_disable_device: - pci_disable_device(pdev); -out_ieee80211_free_hw: - ieee80211_free_hw(il->hw); -out: - return err; -} - -static void -il4965_pci_remove(struct pci_dev *pdev) -{ - struct il_priv *il = pci_get_drvdata(pdev); - unsigned long flags; - - if (!il) - return; - - wait_for_completion(&il->_4965.firmware_loading_complete); - - D_INFO("*** UNLOAD DRIVER ***\n"); - - il_dbgfs_unregister(il); - sysfs_remove_group(&pdev->dev.kobj, &il_attribute_group); - - /* ieee80211_unregister_hw call wil cause il_mac_stop to - * to be called and il4965_down since we are removing the device - * we need to set S_EXIT_PENDING bit. - */ - set_bit(S_EXIT_PENDING, &il->status); - - il_leds_exit(il); - - if (il->mac80211_registered) { - ieee80211_unregister_hw(il->hw); - il->mac80211_registered = 0; - } else { - il4965_down(il); - } - - /* - * Make sure device is reset to low power before unloading driver. - * This may be redundant with il4965_down(), but there are paths to - * run il4965_down() without calling apm_ops.stop(), and there are - * paths to avoid running il4965_down() at all before leaving driver. - * This (inexpensive) call *makes sure* device is reset. - */ - il_apm_stop(il); - - /* make sure we flush any pending irq or - * tasklet for the driver - */ - spin_lock_irqsave(&il->lock, flags); - il_disable_interrupts(il); - spin_unlock_irqrestore(&il->lock, flags); - - il4965_synchronize_irq(il); - - il4965_dealloc_ucode_pci(il); - - if (il->rxq.bd) - il4965_rx_queue_free(il, &il->rxq); - il4965_hw_txq_ctx_free(il); - - il_eeprom_free(il); - - /*netif_stop_queue(dev); */ - flush_workqueue(il->workqueue); - - /* ieee80211_unregister_hw calls il_mac_stop, which flushes - * il->workqueue... so we can't take down the workqueue - * until now... */ - destroy_workqueue(il->workqueue); - il->workqueue = NULL; - - free_irq(il->pci_dev->irq, il); - pci_disable_msi(il->pci_dev); - iounmap(il->hw_base); - pci_release_regions(pdev); - pci_disable_device(pdev); - - il4965_uninit_drv(il); - - dev_kfree_skb(il->beacon_skb); - - ieee80211_free_hw(il->hw); -} - -/* - * Activate/Deactivate Tx DMA/FIFO channels according tx fifos mask - * must be called under il->lock and mac access - */ -void -il4965_txq_set_sched(struct il_priv *il, u32 mask) -{ - il_wr_prph(il, IL49_SCD_TXFACT, mask); -} - -/***************************************************************************** - * - * driver and module entry point - * - *****************************************************************************/ - -/* Hardware specific file defines the PCI IDs table for that hardware module */ -static const struct pci_device_id il4965_hw_card_ids[] = { - {IL_PCI_DEVICE(0x4229, PCI_ANY_ID, il4965_cfg)}, - {IL_PCI_DEVICE(0x4230, PCI_ANY_ID, il4965_cfg)}, - {0} -}; -MODULE_DEVICE_TABLE(pci, il4965_hw_card_ids); - -static struct pci_driver il4965_driver = { - .name = DRV_NAME, - .id_table = il4965_hw_card_ids, - .probe = il4965_pci_probe, - .remove = il4965_pci_remove, - .driver.pm = IL_LEGACY_PM_OPS, -}; - -static int __init -il4965_init(void) -{ - - int ret; - pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n"); - pr_info(DRV_COPYRIGHT "\n"); - - ret = il4965_rate_control_register(); - if (ret) { - pr_err("Unable to register rate control algorithm: %d\n", ret); - return ret; - } - - ret = pci_register_driver(&il4965_driver); - if (ret) { - pr_err("Unable to initialize PCI module\n"); - goto error_register; - } - - return ret; - -error_register: - il4965_rate_control_unregister(); - return ret; -} - -static void __exit -il4965_exit(void) -{ - pci_unregister_driver(&il4965_driver); - il4965_rate_control_unregister(); -} - -module_exit(il4965_exit); -module_init(il4965_init); - -#ifdef CONFIG_IWLEGACY_DEBUG -module_param_named(debug, il_debug_level, uint, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(debug, "debug output mask"); -#endif - -module_param_named(swcrypto, il4965_mod_params.sw_crypto, int, S_IRUGO); -MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])"); -module_param_named(queues_num, il4965_mod_params.num_of_queues, int, S_IRUGO); -MODULE_PARM_DESC(queues_num, "number of hw queues."); -module_param_named(11n_disable, il4965_mod_params.disable_11n, int, S_IRUGO); -MODULE_PARM_DESC(11n_disable, "disable 11n functionality"); -module_param_named(amsdu_size_8K, il4965_mod_params.amsdu_size_8K, int, - S_IRUGO); -MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size (default 0 [disabled])"); -module_param_named(fw_restart, il4965_mod_params.restart_fw, int, S_IRUGO); -MODULE_PARM_DESC(fw_restart, "restart firmware in case of error"); diff --git a/drivers/net/wireless/iwlegacy/4965-rs.c b/drivers/net/wireless/iwlegacy/4965-rs.c deleted file mode 100644 index bac60b2bc3f0..000000000000 --- a/drivers/net/wireless/iwlegacy/4965-rs.c +++ /dev/null @@ -1,2835 +0,0 @@ -/****************************************************************************** - * - * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA - * - * The full GNU General Public License is included in this distribution in the - * file called LICENSE. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - *****************************************************************************/ -#include <linux/kernel.h> -#include <linux/skbuff.h> -#include <linux/slab.h> -#include <net/mac80211.h> - -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/delay.h> - -#include <linux/workqueue.h> - -#include "common.h" -#include "4965.h" - -#define IL4965_RS_NAME "iwl-4965-rs" - -#define NUM_TRY_BEFORE_ANT_TOGGLE 1 -#define IL_NUMBER_TRY 1 -#define IL_HT_NUMBER_TRY 3 - -#define RATE_MAX_WINDOW 62 /* # tx in history win */ -#define RATE_MIN_FAILURE_TH 6 /* min failures to calc tpt */ -#define RATE_MIN_SUCCESS_TH 8 /* min successes to calc tpt */ - -/* max allowed rate miss before sync LQ cmd */ -#define IL_MISSED_RATE_MAX 15 -/* max time to accum history 2 seconds */ -#define RATE_SCALE_FLUSH_INTVL (3*HZ) - -static u8 rs_ht_to_legacy[] = { - RATE_6M_IDX, RATE_6M_IDX, - RATE_6M_IDX, RATE_6M_IDX, - RATE_6M_IDX, - RATE_6M_IDX, RATE_9M_IDX, - RATE_12M_IDX, RATE_18M_IDX, - RATE_24M_IDX, RATE_36M_IDX, - RATE_48M_IDX, RATE_54M_IDX -}; - -static const u8 ant_toggle_lookup[] = { - /*ANT_NONE -> */ ANT_NONE, - /*ANT_A -> */ ANT_B, - /*ANT_B -> */ ANT_C, - /*ANT_AB -> */ ANT_BC, - /*ANT_C -> */ ANT_A, - /*ANT_AC -> */ ANT_AB, - /*ANT_BC -> */ ANT_AC, - /*ANT_ABC -> */ ANT_ABC, -}; - -#define IL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \ - [RATE_##r##M_IDX] = { RATE_##r##M_PLCP, \ - RATE_SISO_##s##M_PLCP, \ - RATE_MIMO2_##s##M_PLCP,\ - RATE_##r##M_IEEE, \ - RATE_##ip##M_IDX, \ - RATE_##in##M_IDX, \ - RATE_##rp##M_IDX, \ - RATE_##rn##M_IDX, \ - RATE_##pp##M_IDX, \ - RATE_##np##M_IDX } - -/* - * Parameter order: - * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate - * - * If there isn't a valid next or previous rate then INV is used which - * maps to RATE_INVALID - * - */ -const struct il_rate_info il_rates[RATE_COUNT] = { - IL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2), /* 1mbps */ - IL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5), /* 2mbps */ - IL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11), /*5.5mbps */ - IL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18), /* 11mbps */ - IL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */ - IL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */ - IL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */ - IL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */ - IL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */ - IL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */ - IL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */ - IL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */ - IL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */ -}; - -static int -il4965_hwrate_to_plcp_idx(u32 rate_n_flags) -{ - int idx = 0; - - /* HT rate format */ - if (rate_n_flags & RATE_MCS_HT_MSK) { - idx = (rate_n_flags & 0xff); - - if (idx >= RATE_MIMO2_6M_PLCP) - idx = idx - RATE_MIMO2_6M_PLCP; - - idx += IL_FIRST_OFDM_RATE; - /* skip 9M not supported in ht */ - if (idx >= RATE_9M_IDX) - idx += 1; - if (idx >= IL_FIRST_OFDM_RATE && idx <= IL_LAST_OFDM_RATE) - return idx; - - /* legacy rate format, search for match in table */ - } else { - for (idx = 0; idx < ARRAY_SIZE(il_rates); idx++) - if (il_rates[idx].plcp == (rate_n_flags & 0xFF)) - return idx; - } - - return -1; -} - -static void il4965_rs_rate_scale_perform(struct il_priv *il, - struct sk_buff *skb, - struct ieee80211_sta *sta, - struct il_lq_sta *lq_sta); -static void il4965_rs_fill_link_cmd(struct il_priv *il, - struct il_lq_sta *lq_sta, u32 rate_n_flags); -static void il4965_rs_stay_in_table(struct il_lq_sta *lq_sta, - bool force_search); - -#ifdef CONFIG_MAC80211_DEBUGFS -static void il4965_rs_dbgfs_set_mcs(struct il_lq_sta *lq_sta, - u32 *rate_n_flags, int idx); -#else -static void -il4965_rs_dbgfs_set_mcs(struct il_lq_sta *lq_sta, u32 * rate_n_flags, int idx) -{ -} -#endif - -/** - * The following tables contain the expected throughput metrics for all rates - * - * 1, 2, 5.5, 11, 6, 9, 12, 18, 24, 36, 48, 54, 60 MBits - * - * where invalid entries are zeros. - * - * CCK rates are only valid in legacy table and will only be used in G - * (2.4 GHz) band. - */ - -static s32 expected_tpt_legacy[RATE_COUNT] = { - 7, 13, 35, 58, 40, 57, 72, 98, 121, 154, 177, 186, 0 -}; - -static s32 expected_tpt_siso20MHz[4][RATE_COUNT] = { - {0, 0, 0, 0, 42, 0, 76, 102, 124, 158, 183, 193, 202}, /* Norm */ - {0, 0, 0, 0, 46, 0, 82, 110, 132, 167, 192, 202, 210}, /* SGI */ - {0, 0, 0, 0, 48, 0, 93, 135, 176, 251, 319, 351, 381}, /* AGG */ - {0, 0, 0, 0, 53, 0, 102, 149, 193, 275, 348, 381, 413}, /* AGG+SGI */ -}; - -static s32 expected_tpt_siso40MHz[4][RATE_COUNT] = { - {0, 0, 0, 0, 77, 0, 127, 160, 184, 220, 242, 250, 257}, /* Norm */ - {0, 0, 0, 0, 83, 0, 135, 169, 193, 229, 250, 257, 264}, /* SGI */ - {0, 0, 0, 0, 96, 0, 182, 259, 328, 451, 553, 598, 640}, /* AGG */ - {0, 0, 0, 0, 106, 0, 199, 282, 357, 487, 593, 640, 683}, /* AGG+SGI */ -}; - -static s32 expected_tpt_mimo2_20MHz[4][RATE_COUNT] = { - {0, 0, 0, 0, 74, 0, 123, 155, 179, 213, 235, 243, 250}, /* Norm */ - {0, 0, 0, 0, 81, 0, 131, 164, 187, 221, 242, 250, 256}, /* SGI */ - {0, 0, 0, 0, 92, 0, 175, 250, 317, 436, 534, 578, 619}, /* AGG */ - {0, 0, 0, 0, 102, 0, 192, 273, 344, 470, 573, 619, 660}, /* AGG+SGI */ -}; - -static s32 expected_tpt_mimo2_40MHz[4][RATE_COUNT] = { - {0, 0, 0, 0, 123, 0, 182, 214, 235, 264, 279, 285, 289}, /* Norm */ - {0, 0, 0, 0, 131, 0, 191, 222, 242, 270, 284, 289, 293}, /* SGI */ - {0, 0, 0, 0, 180, 0, 327, 446, 545, 708, 828, 878, 922}, /* AGG */ - {0, 0, 0, 0, 197, 0, 355, 481, 584, 752, 872, 922, 966}, /* AGG+SGI */ -}; - -/* mbps, mcs */ -static const struct il_rate_mcs_info il_rate_mcs[RATE_COUNT] = { - {"1", "BPSK DSSS"}, - {"2", "QPSK DSSS"}, - {"5.5", "BPSK CCK"}, - {"11", "QPSK CCK"}, - {"6", "BPSK 1/2"}, - {"9", "BPSK 1/2"}, - {"12", "QPSK 1/2"}, - {"18", "QPSK 3/4"}, - {"24", "16QAM 1/2"}, - {"36", "16QAM 3/4"}, - {"48", "64QAM 2/3"}, - {"54", "64QAM 3/4"}, - {"60", "64QAM 5/6"}, -}; - -#define MCS_IDX_PER_STREAM (8) - -static inline u8 -il4965_rs_extract_rate(u32 rate_n_flags) -{ - return (u8) (rate_n_flags & 0xFF); -} - -static void -il4965_rs_rate_scale_clear_win(struct il_rate_scale_data *win) -{ - win->data = 0; - win->success_counter = 0; - win->success_ratio = IL_INVALID_VALUE; - win->counter = 0; - win->average_tpt = IL_INVALID_VALUE; - win->stamp = 0; -} - -static inline u8 -il4965_rs_is_valid_ant(u8 valid_antenna, u8 ant_type) -{ - return (ant_type & valid_antenna) == ant_type; -} - -/* - * removes the old data from the stats. All data that is older than - * TID_MAX_TIME_DIFF, will be deleted. - */ -static void -il4965_rs_tl_rm_old_stats(struct il_traffic_load *tl, u32 curr_time) -{ - /* The oldest age we want to keep */ - u32 oldest_time = curr_time - TID_MAX_TIME_DIFF; - - while (tl->queue_count && tl->time_stamp < oldest_time) { - tl->total -= tl->packet_count[tl->head]; - tl->packet_count[tl->head] = 0; - tl->time_stamp += TID_QUEUE_CELL_SPACING; - tl->queue_count--; - tl->head++; - if (tl->head >= TID_QUEUE_MAX_SIZE) - tl->head = 0; - } -} - -/* - * increment traffic load value for tid and also remove - * any old values if passed the certain time period - */ -static u8 -il4965_rs_tl_add_packet(struct il_lq_sta *lq_data, struct ieee80211_hdr *hdr) -{ - u32 curr_time = jiffies_to_msecs(jiffies); - u32 time_diff; - s32 idx; - struct il_traffic_load *tl = NULL; - u8 tid; - - if (ieee80211_is_data_qos(hdr->frame_control)) { - u8 *qc = ieee80211_get_qos_ctl(hdr); - tid = qc[0] & 0xf; - } else - return MAX_TID_COUNT; - - if (unlikely(tid >= TID_MAX_LOAD_COUNT)) - return MAX_TID_COUNT; - - tl = &lq_data->load[tid]; - - curr_time -= curr_time % TID_ROUND_VALUE; - - /* Happens only for the first packet. Initialize the data */ - if (!(tl->queue_count)) { - tl->total = 1; - tl->time_stamp = curr_time; - tl->queue_count = 1; - tl->head = 0; - tl->packet_count[0] = 1; - return MAX_TID_COUNT; - } - - time_diff = TIME_WRAP_AROUND(tl->time_stamp, curr_time); - idx = time_diff / TID_QUEUE_CELL_SPACING; - - /* The history is too long: remove data that is older than */ - /* TID_MAX_TIME_DIFF */ - if (idx >= TID_QUEUE_MAX_SIZE) - il4965_rs_tl_rm_old_stats(tl, curr_time); - - idx = (tl->head + idx) % TID_QUEUE_MAX_SIZE; - tl->packet_count[idx] = tl->packet_count[idx] + 1; - tl->total = tl->total + 1; - - if ((idx + 1) > tl->queue_count) - tl->queue_count = idx + 1; - - return tid; -} - -/* - get the traffic load value for tid -*/ -static u32 -il4965_rs_tl_get_load(struct il_lq_sta *lq_data, u8 tid) -{ - u32 curr_time = jiffies_to_msecs(jiffies); - u32 time_diff; - s32 idx; - struct il_traffic_load *tl = NULL; - - if (tid >= TID_MAX_LOAD_COUNT) - return 0; - - tl = &(lq_data->load[tid]); - - curr_time -= curr_time % TID_ROUND_VALUE; - - if (!(tl->queue_count)) - return 0; - - time_diff = TIME_WRAP_AROUND(tl->time_stamp, curr_time); - idx = time_diff / TID_QUEUE_CELL_SPACING; - - /* The history is too long: remove data that is older than */ - /* TID_MAX_TIME_DIFF */ - if (idx >= TID_QUEUE_MAX_SIZE) - il4965_rs_tl_rm_old_stats(tl, curr_time); - - return tl->total; -} - -static int -il4965_rs_tl_turn_on_agg_for_tid(struct il_priv *il, struct il_lq_sta *lq_data, - u8 tid, struct ieee80211_sta *sta) -{ - int ret = -EAGAIN; - u32 load; - - load = il4965_rs_tl_get_load(lq_data, tid); - - if (load > IL_AGG_LOAD_THRESHOLD) { - D_HT("Starting Tx agg: STA: %pM tid: %d\n", sta->addr, tid); - ret = ieee80211_start_tx_ba_session(sta, tid, 5000); - if (ret == -EAGAIN) { - /* - * driver and mac80211 is out of sync - * this might be cause by reloading firmware - * stop the tx ba session here - */ - IL_ERR("Fail start Tx agg on tid: %d\n", tid); - ieee80211_stop_tx_ba_session(sta, tid); - } - } else - D_HT("Aggregation not enabled for tid %d because load = %u\n", - tid, load); - - return ret; -} - -static void -il4965_rs_tl_turn_on_agg(struct il_priv *il, u8 tid, struct il_lq_sta *lq_data, - struct ieee80211_sta *sta) -{ - if (tid < TID_MAX_LOAD_COUNT) - il4965_rs_tl_turn_on_agg_for_tid(il, lq_data, tid, sta); - else - IL_ERR("tid exceeds max load count: %d/%d\n", tid, - TID_MAX_LOAD_COUNT); -} - -static inline int -il4965_get_il4965_num_of_ant_from_rate(u32 rate_n_flags) -{ - return !!(rate_n_flags & RATE_MCS_ANT_A_MSK) + - !!(rate_n_flags & RATE_MCS_ANT_B_MSK) + - !!(rate_n_flags & RATE_MCS_ANT_C_MSK); -} - -/* - * Static function to get the expected throughput from an il_scale_tbl_info - * that wraps a NULL pointer check - */ -static s32 -il4965_get_expected_tpt(struct il_scale_tbl_info *tbl, int rs_idx) -{ - if (tbl->expected_tpt) - return tbl->expected_tpt[rs_idx]; - return 0; -} - -/** - * il4965_rs_collect_tx_data - Update the success/failure sliding win - * - * We keep a sliding win of the last 62 packets transmitted - * at this rate. win->data contains the bitmask of successful - * packets. - */ -static int -il4965_rs_collect_tx_data(struct il_scale_tbl_info *tbl, int scale_idx, - int attempts, int successes) -{ - struct il_rate_scale_data *win = NULL; - static const u64 mask = (((u64) 1) << (RATE_MAX_WINDOW - 1)); - s32 fail_count, tpt; - - if (scale_idx < 0 || scale_idx >= RATE_COUNT) - return -EINVAL; - - /* Select win for current tx bit rate */ - win = &(tbl->win[scale_idx]); - - /* Get expected throughput */ - tpt = il4965_get_expected_tpt(tbl, scale_idx); - - /* - * Keep track of only the latest 62 tx frame attempts in this rate's - * history win; anything older isn't really relevant any more. - * If we have filled up the sliding win, drop the oldest attempt; - * if the oldest attempt (highest bit in bitmap) shows "success", - * subtract "1" from the success counter (this is the main reason - * we keep these bitmaps!). - */ - while (attempts > 0) { - if (win->counter >= RATE_MAX_WINDOW) { - - /* remove earliest */ - win->counter = RATE_MAX_WINDOW - 1; - - if (win->data & mask) { - win->data &= ~mask; - win->success_counter--; - } - } - - /* Increment frames-attempted counter */ - win->counter++; - - /* Shift bitmap by one frame to throw away oldest history */ - win->data <<= 1; - - /* Mark the most recent #successes attempts as successful */ - if (successes > 0) { - win->success_counter++; - win->data |= 0x1; - successes--; - } - - attempts--; - } - - /* Calculate current success ratio, avoid divide-by-0! */ - if (win->counter > 0) - win->success_ratio = - 128 * (100 * win->success_counter) / win->counter; - else - win->success_ratio = IL_INVALID_VALUE; - - fail_count = win->counter - win->success_counter; - - /* Calculate average throughput, if we have enough history. */ - if (fail_count >= RATE_MIN_FAILURE_TH || - win->success_counter >= RATE_MIN_SUCCESS_TH) - win->average_tpt = (win->success_ratio * tpt + 64) / 128; - else - win->average_tpt = IL_INVALID_VALUE; - - /* Tag this win as having been updated */ - win->stamp = jiffies; - - return 0; -} - -/* - * Fill uCode API rate_n_flags field, based on "search" or "active" table. - */ -static u32 -il4965_rate_n_flags_from_tbl(struct il_priv *il, struct il_scale_tbl_info *tbl, - int idx, u8 use_green) -{ - u32 rate_n_flags = 0; - - if (is_legacy(tbl->lq_type)) { - rate_n_flags = il_rates[idx].plcp; - if (idx >= IL_FIRST_CCK_RATE && idx <= IL_LAST_CCK_RATE) - rate_n_flags |= RATE_MCS_CCK_MSK; - - } else if (is_Ht(tbl->lq_type)) { - if (idx > IL_LAST_OFDM_RATE) { - IL_ERR("Invalid HT rate idx %d\n", idx); - idx = IL_LAST_OFDM_RATE; - } - rate_n_flags = RATE_MCS_HT_MSK; - - if (is_siso(tbl->lq_type)) - rate_n_flags |= il_rates[idx].plcp_siso; - else - rate_n_flags |= il_rates[idx].plcp_mimo2; - } else { - IL_ERR("Invalid tbl->lq_type %d\n", tbl->lq_type); - } - - rate_n_flags |= - ((tbl->ant_type << RATE_MCS_ANT_POS) & RATE_MCS_ANT_ABC_MSK); - - if (is_Ht(tbl->lq_type)) { - if (tbl->is_ht40) { - if (tbl->is_dup) - rate_n_flags |= RATE_MCS_DUP_MSK; - else - rate_n_flags |= RATE_MCS_HT40_MSK; - } - if (tbl->is_SGI) - rate_n_flags |= RATE_MCS_SGI_MSK; - - if (use_green) { - rate_n_flags |= RATE_MCS_GF_MSK; - if (is_siso(tbl->lq_type) && tbl->is_SGI) { - rate_n_flags &= ~RATE_MCS_SGI_MSK; - IL_ERR("GF was set with SGI:SISO\n"); - } - } - } - return rate_n_flags; -} - -/* - * Interpret uCode API's rate_n_flags format, - * fill "search" or "active" tx mode table. - */ -static int -il4965_rs_get_tbl_info_from_mcs(const u32 rate_n_flags, - enum ieee80211_band band, - struct il_scale_tbl_info *tbl, int *rate_idx) -{ - u32 ant_msk = (rate_n_flags & RATE_MCS_ANT_ABC_MSK); - u8 il4965_num_of_ant = - il4965_get_il4965_num_of_ant_from_rate(rate_n_flags); - u8 mcs; - - memset(tbl, 0, sizeof(struct il_scale_tbl_info)); - *rate_idx = il4965_hwrate_to_plcp_idx(rate_n_flags); - - if (*rate_idx == RATE_INVALID) { - *rate_idx = -1; - return -EINVAL; - } - tbl->is_SGI = 0; /* default legacy setup */ - tbl->is_ht40 = 0; - tbl->is_dup = 0; - tbl->ant_type = (ant_msk >> RATE_MCS_ANT_POS); - tbl->lq_type = LQ_NONE; - tbl->max_search = IL_MAX_SEARCH; - - /* legacy rate format */ - if (!(rate_n_flags & RATE_MCS_HT_MSK)) { - if (il4965_num_of_ant == 1) { - if (band == IEEE80211_BAND_5GHZ) - tbl->lq_type = LQ_A; - else - tbl->lq_type = LQ_G; - } - /* HT rate format */ - } else { - if (rate_n_flags & RATE_MCS_SGI_MSK) - tbl->is_SGI = 1; - - if ((rate_n_flags & RATE_MCS_HT40_MSK) || - (rate_n_flags & RATE_MCS_DUP_MSK)) - tbl->is_ht40 = 1; - - if (rate_n_flags & RATE_MCS_DUP_MSK) - tbl->is_dup = 1; - - mcs = il4965_rs_extract_rate(rate_n_flags); - - /* SISO */ - if (mcs <= RATE_SISO_60M_PLCP) { - if (il4965_num_of_ant == 1) - tbl->lq_type = LQ_SISO; /*else NONE */ - /* MIMO2 */ - } else { - if (il4965_num_of_ant == 2) - tbl->lq_type = LQ_MIMO2; - } - } - return 0; -} - -/* switch to another antenna/antennas and return 1 */ -/* if no other valid antenna found, return 0 */ -static int -il4965_rs_toggle_antenna(u32 valid_ant, u32 *rate_n_flags, - struct il_scale_tbl_info *tbl) -{ - u8 new_ant_type; - - if (!tbl->ant_type || tbl->ant_type > ANT_ABC) - return 0; - - if (!il4965_rs_is_valid_ant(valid_ant, tbl->ant_type)) - return 0; - - new_ant_type = ant_toggle_lookup[tbl->ant_type]; - - while (new_ant_type != tbl->ant_type && - !il4965_rs_is_valid_ant(valid_ant, new_ant_type)) - new_ant_type = ant_toggle_lookup[new_ant_type]; - - if (new_ant_type == tbl->ant_type) - return 0; - - tbl->ant_type = new_ant_type; - *rate_n_flags &= ~RATE_MCS_ANT_ABC_MSK; - *rate_n_flags |= new_ant_type << RATE_MCS_ANT_POS; - return 1; -} - -/** - * Green-field mode is valid if the station supports it and - * there are no non-GF stations present in the BSS. - */ -static bool -il4965_rs_use_green(struct il_priv *il, struct ieee80211_sta *sta) -{ - return (sta->ht_cap.cap & IEEE80211_HT_CAP_GRN_FLD) && - !il->ht.non_gf_sta_present; -} - -/** - * il4965_rs_get_supported_rates - get the available rates - * - * if management frame or broadcast frame only return - * basic available rates. - * - */ -static u16 -il4965_rs_get_supported_rates(struct il_lq_sta *lq_sta, - struct ieee80211_hdr *hdr, - enum il_table_type rate_type) -{ - if (is_legacy(rate_type)) { - return lq_sta->active_legacy_rate; - } else { - if (is_siso(rate_type)) - return lq_sta->active_siso_rate; - else - return lq_sta->active_mimo2_rate; - } -} - -static u16 -il4965_rs_get_adjacent_rate(struct il_priv *il, u8 idx, u16 rate_mask, - int rate_type) -{ - u8 high = RATE_INVALID; - u8 low = RATE_INVALID; - - /* 802.11A or ht walks to the next literal adjacent rate in - * the rate table */ - if (is_a_band(rate_type) || !is_legacy(rate_type)) { - int i; - u32 mask; - - /* Find the previous rate that is in the rate mask */ - i = idx - 1; - for (mask = (1 << i); i >= 0; i--, mask >>= 1) { - if (rate_mask & mask) { - low = i; - break; - } - } - - /* Find the next rate that is in the rate mask */ - i = idx + 1; - for (mask = (1 << i); i < RATE_COUNT; i++, mask <<= 1) { - if (rate_mask & mask) { - high = i; - break; - } - } - - return (high << 8) | low; - } - - low = idx; - while (low != RATE_INVALID) { - low = il_rates[low].prev_rs; - if (low == RATE_INVALID) - break; - if (rate_mask & (1 << low)) - break; - D_RATE("Skipping masked lower rate: %d\n", low); - } - - high = idx; - while (high != RATE_INVALID) { - high = il_rates[high].next_rs; - if (high == RATE_INVALID) - break; - if (rate_mask & (1 << high)) - break; - D_RATE("Skipping masked higher rate: %d\n", high); - } - - return (high << 8) | low; -} - -static u32 -il4965_rs_get_lower_rate(struct il_lq_sta *lq_sta, - struct il_scale_tbl_info *tbl, u8 scale_idx, - u8 ht_possible) -{ - s32 low; - u16 rate_mask; - u16 high_low; - u8 switch_to_legacy = 0; - u8 is_green = lq_sta->is_green; - struct il_priv *il = lq_sta->drv; - - /* check if we need to switch from HT to legacy rates. - * assumption is that mandatory rates (1Mbps or 6Mbps) - * are always supported (spec demand) */ - if (!is_legacy(tbl->lq_type) && (!ht_possible || !scale_idx)) { - switch_to_legacy = 1; - scale_idx = rs_ht_to_legacy[scale_idx]; - if (lq_sta->band == IEEE80211_BAND_5GHZ) - tbl->lq_type = LQ_A; - else - tbl->lq_type = LQ_G; - - if (il4965_num_of_ant(tbl->ant_type) > 1) - tbl->ant_type = - il4965_first_antenna(il->hw_params.valid_tx_ant); - - tbl->is_ht40 = 0; - tbl->is_SGI = 0; - tbl->max_search = IL_MAX_SEARCH; - } - - rate_mask = il4965_rs_get_supported_rates(lq_sta, NULL, tbl->lq_type); - - /* Mask with station rate restriction */ - if (is_legacy(tbl->lq_type)) { - /* supp_rates has no CCK bits in A mode */ - if (lq_sta->band == IEEE80211_BAND_5GHZ) - rate_mask = - (u16) (rate_mask & - (lq_sta->supp_rates << IL_FIRST_OFDM_RATE)); - else - rate_mask = (u16) (rate_mask & lq_sta->supp_rates); - } - - /* If we switched from HT to legacy, check current rate */ - if (switch_to_legacy && (rate_mask & (1 << scale_idx))) { - low = scale_idx; - goto out; - } - - high_low = - il4965_rs_get_adjacent_rate(lq_sta->drv, scale_idx, rate_mask, - tbl->lq_type); - low = high_low & 0xff; - - if (low == RATE_INVALID) - low = scale_idx; - -out: - return il4965_rate_n_flags_from_tbl(lq_sta->drv, tbl, low, is_green); -} - -/* - * Simple function to compare two rate scale table types - */ -static bool -il4965_table_type_matches(struct il_scale_tbl_info *a, - struct il_scale_tbl_info *b) -{ - return (a->lq_type == b->lq_type && a->ant_type == b->ant_type && - a->is_SGI == b->is_SGI); -} - -/* - * mac80211 sends us Tx status - */ -static void -il4965_rs_tx_status(void *il_r, struct ieee80211_supported_band *sband, - struct ieee80211_sta *sta, void *il_sta, - struct sk_buff *skb) -{ - int legacy_success; - int retries; - int rs_idx, mac_idx, i; - struct il_lq_sta *lq_sta = il_sta; - struct il_link_quality_cmd *table; - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; - struct il_priv *il = (struct il_priv *)il_r; - struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); - enum mac80211_rate_control_flags mac_flags; - u32 tx_rate; - struct il_scale_tbl_info tbl_type; - struct il_scale_tbl_info *curr_tbl, *other_tbl, *tmp_tbl; - - D_RATE("get frame ack response, update rate scale win\n"); - - /* Treat uninitialized rate scaling data same as non-existing. */ - if (!lq_sta) { - D_RATE("Station rate scaling not created yet.\n"); - return; - } else if (!lq_sta->drv) { - D_RATE("Rate scaling not initialized yet.\n"); - return; - } - - if (!ieee80211_is_data(hdr->frame_control) || - (info->flags & IEEE80211_TX_CTL_NO_ACK)) - return; - - /* This packet was aggregated but doesn't carry status info */ - if ((info->flags & IEEE80211_TX_CTL_AMPDU) && - !(info->flags & IEEE80211_TX_STAT_AMPDU)) - return; - - /* - * Ignore this Tx frame response if its initial rate doesn't match - * that of latest Link Quality command. There may be stragglers - * from a previous Link Quality command, but we're no longer interested - * in those; they're either from the "active" mode while we're trying - * to check "search" mode, or a prior "search" mode after we've moved - * to a new "search" mode (which might become the new "active" mode). - */ - table = &lq_sta->lq; - tx_rate = le32_to_cpu(table->rs_table[0].rate_n_flags); - il4965_rs_get_tbl_info_from_mcs(tx_rate, il->band, &tbl_type, &rs_idx); - if (il->band == IEEE80211_BAND_5GHZ) - rs_idx -= IL_FIRST_OFDM_RATE; - mac_flags = info->status.rates[0].flags; - mac_idx = info->status.rates[0].idx; - /* For HT packets, map MCS to PLCP */ - if (mac_flags & IEEE80211_TX_RC_MCS) { - mac_idx &= RATE_MCS_CODE_MSK; /* Remove # of streams */ - if (mac_idx >= (RATE_9M_IDX - IL_FIRST_OFDM_RATE)) - mac_idx++; - /* - * mac80211 HT idx is always zero-idxed; we need to move - * HT OFDM rates after CCK rates in 2.4 GHz band - */ - if (il->band == IEEE80211_BAND_2GHZ) - mac_idx += IL_FIRST_OFDM_RATE; - } - /* Here we actually compare this rate to the latest LQ command */ - if (mac_idx < 0 || - tbl_type.is_SGI != !!(mac_flags & IEEE80211_TX_RC_SHORT_GI) || - tbl_type.is_ht40 != !!(mac_flags & IEEE80211_TX_RC_40_MHZ_WIDTH) || - tbl_type.is_dup != !!(mac_flags & IEEE80211_TX_RC_DUP_DATA) || - tbl_type.ant_type != info->status.antenna || - !!(tx_rate & RATE_MCS_HT_MSK) != !!(mac_flags & IEEE80211_TX_RC_MCS) - || !!(tx_rate & RATE_MCS_GF_MSK) != - !!(mac_flags & IEEE80211_TX_RC_GREEN_FIELD) || rs_idx != mac_idx) { - D_RATE("initial rate %d does not match %d (0x%x)\n", mac_idx, - rs_idx, tx_rate); - /* - * Since rates mis-match, the last LQ command may have failed. - * After IL_MISSED_RATE_MAX mis-matches, resync the uCode with - * ... driver. - */ - lq_sta->missed_rate_counter++; - if (lq_sta->missed_rate_counter > IL_MISSED_RATE_MAX) { - lq_sta->missed_rate_counter = 0; - il_send_lq_cmd(il, &lq_sta->lq, CMD_ASYNC, false); - } - /* Regardless, ignore this status info for outdated rate */ - return; - } else - /* Rate did match, so reset the missed_rate_counter */ - lq_sta->missed_rate_counter = 0; - - /* Figure out if rate scale algorithm is in active or search table */ - if (il4965_table_type_matches - (&tbl_type, &(lq_sta->lq_info[lq_sta->active_tbl]))) { - curr_tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); - other_tbl = &(lq_sta->lq_info[1 - lq_sta->active_tbl]); - } else - if (il4965_table_type_matches - (&tbl_type, &lq_sta->lq_info[1 - lq_sta->active_tbl])) { - curr_tbl = &(lq_sta->lq_info[1 - lq_sta->active_tbl]); - other_tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); - } else { - D_RATE("Neither active nor search matches tx rate\n"); - tmp_tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); - D_RATE("active- lq:%x, ant:%x, SGI:%d\n", tmp_tbl->lq_type, - tmp_tbl->ant_type, tmp_tbl->is_SGI); - tmp_tbl = &(lq_sta->lq_info[1 - lq_sta->active_tbl]); - D_RATE("search- lq:%x, ant:%x, SGI:%d\n", tmp_tbl->lq_type, - tmp_tbl->ant_type, tmp_tbl->is_SGI); - D_RATE("actual- lq:%x, ant:%x, SGI:%d\n", tbl_type.lq_type, - tbl_type.ant_type, tbl_type.is_SGI); - /* - * no matching table found, let's by-pass the data collection - * and continue to perform rate scale to find the rate table - */ - il4965_rs_stay_in_table(lq_sta, true); - goto done; - } - - /* - * Updating the frame history depends on whether packets were - * aggregated. - * - * For aggregation, all packets were transmitted at the same rate, the - * first idx into rate scale table. - */ - if (info->flags & IEEE80211_TX_STAT_AMPDU) { - tx_rate = le32_to_cpu(table->rs_table[0].rate_n_flags); - il4965_rs_get_tbl_info_from_mcs(tx_rate, il->band, &tbl_type, - &rs_idx); - il4965_rs_collect_tx_data(curr_tbl, rs_idx, - info->status.ampdu_len, - info->status.ampdu_ack_len); - - /* Update success/fail counts if not searching for new mode */ - if (lq_sta->stay_in_tbl) { - lq_sta->total_success += info->status.ampdu_ack_len; - lq_sta->total_failed += - (info->status.ampdu_len - - info->status.ampdu_ack_len); - } - } else { - /* - * For legacy, update frame history with for each Tx retry. - */ - retries = info->status.rates[0].count - 1; - /* HW doesn't send more than 15 retries */ - retries = min(retries, 15); - - /* The last transmission may have been successful */ - legacy_success = !!(info->flags & IEEE80211_TX_STAT_ACK); - /* Collect data for each rate used during failed TX attempts */ - for (i = 0; i <= retries; ++i) { - tx_rate = le32_to_cpu(table->rs_table[i].rate_n_flags); - il4965_rs_get_tbl_info_from_mcs(tx_rate, il->band, - &tbl_type, &rs_idx); - /* - * Only collect stats if retried rate is in the same RS - * table as active/search. - */ - if (il4965_table_type_matches(&tbl_type, curr_tbl)) - tmp_tbl = curr_tbl; - else if (il4965_table_type_matches - (&tbl_type, other_tbl)) - tmp_tbl = other_tbl; - else - continue; - il4965_rs_collect_tx_data(tmp_tbl, rs_idx, 1, - i < - retries ? 0 : legacy_success); - } - - /* Update success/fail counts if not searching for new mode */ - if (lq_sta->stay_in_tbl) { - lq_sta->total_success += legacy_success; - lq_sta->total_failed += retries + (1 - legacy_success); - } - } - /* The last TX rate is cached in lq_sta; it's set in if/else above */ - lq_sta->last_rate_n_flags = tx_rate; -done: - /* See if there's a better rate or modulation mode to try. */ - if (sta->supp_rates[sband->band]) - il4965_rs_rate_scale_perform(il, skb, sta, lq_sta); -} - -/* - * Begin a period of staying with a selected modulation mode. - * Set "stay_in_tbl" flag to prevent any mode switches. - * Set frame tx success limits according to legacy vs. high-throughput, - * and reset overall (spanning all rates) tx success history stats. - * These control how long we stay using same modulation mode before - * searching for a new mode. - */ -static void -il4965_rs_set_stay_in_table(struct il_priv *il, u8 is_legacy, - struct il_lq_sta *lq_sta) -{ - D_RATE("we are staying in the same table\n"); - lq_sta->stay_in_tbl = 1; /* only place this gets set */ - if (is_legacy) { - lq_sta->table_count_limit = IL_LEGACY_TBL_COUNT; - lq_sta->max_failure_limit = IL_LEGACY_FAILURE_LIMIT; - lq_sta->max_success_limit = IL_LEGACY_SUCCESS_LIMIT; - } else { - lq_sta->table_count_limit = IL_NONE_LEGACY_TBL_COUNT; - lq_sta->max_failure_limit = IL_NONE_LEGACY_FAILURE_LIMIT; - lq_sta->max_success_limit = IL_NONE_LEGACY_SUCCESS_LIMIT; - } - lq_sta->table_count = 0; - lq_sta->total_failed = 0; - lq_sta->total_success = 0; - lq_sta->flush_timer = jiffies; - lq_sta->action_counter = 0; -} - -/* - * Find correct throughput table for given mode of modulation - */ -static void -il4965_rs_set_expected_tpt_table(struct il_lq_sta *lq_sta, - struct il_scale_tbl_info *tbl) -{ - /* Used to choose among HT tables */ - s32(*ht_tbl_pointer)[RATE_COUNT]; - - /* Check for invalid LQ type */ - if (WARN_ON_ONCE(!is_legacy(tbl->lq_type) && !is_Ht(tbl->lq_type))) { - tbl->expected_tpt = expected_tpt_legacy; - return; - } - - /* Legacy rates have only one table */ - if (is_legacy(tbl->lq_type)) { - tbl->expected_tpt = expected_tpt_legacy; - return; - } - - /* Choose among many HT tables depending on number of streams - * (SISO/MIMO2), channel width (20/40), SGI, and aggregation - * status */ - if (is_siso(tbl->lq_type) && (!tbl->is_ht40 || lq_sta->is_dup)) - ht_tbl_pointer = expected_tpt_siso20MHz; - else if (is_siso(tbl->lq_type)) - ht_tbl_pointer = expected_tpt_siso40MHz; - else if (is_mimo2(tbl->lq_type) && (!tbl->is_ht40 || lq_sta->is_dup)) - ht_tbl_pointer = expected_tpt_mimo2_20MHz; - else /* if (is_mimo2(tbl->lq_type)) <-- must be true */ - ht_tbl_pointer = expected_tpt_mimo2_40MHz; - - if (!tbl->is_SGI && !lq_sta->is_agg) /* Normal */ - tbl->expected_tpt = ht_tbl_pointer[0]; - else if (tbl->is_SGI && !lq_sta->is_agg) /* SGI */ - tbl->expected_tpt = ht_tbl_pointer[1]; - else if (!tbl->is_SGI && lq_sta->is_agg) /* AGG */ - tbl->expected_tpt = ht_tbl_pointer[2]; - else /* AGG+SGI */ - tbl->expected_tpt = ht_tbl_pointer[3]; -} - -/* - * Find starting rate for new "search" high-throughput mode of modulation. - * Goal is to find lowest expected rate (under perfect conditions) that is - * above the current measured throughput of "active" mode, to give new mode - * a fair chance to prove itself without too many challenges. - * - * This gets called when transitioning to more aggressive modulation - * (i.e. legacy to SISO or MIMO, or SISO to MIMO), as well as less aggressive - * (i.e. MIMO to SISO). When moving to MIMO, bit rate will typically need - * to decrease to match "active" throughput. When moving from MIMO to SISO, - * bit rate will typically need to increase, but not if performance was bad. - */ -static s32 -il4965_rs_get_best_rate(struct il_priv *il, struct il_lq_sta *lq_sta, - struct il_scale_tbl_info *tbl, /* "search" */ - u16 rate_mask, s8 idx) -{ - /* "active" values */ - struct il_scale_tbl_info *active_tbl = - &(lq_sta->lq_info[lq_sta->active_tbl]); - s32 active_sr = active_tbl->win[idx].success_ratio; - s32 active_tpt = active_tbl->expected_tpt[idx]; - - /* expected "search" throughput */ - s32 *tpt_tbl = tbl->expected_tpt; - - s32 new_rate, high, low, start_hi; - u16 high_low; - s8 rate = idx; - - new_rate = high = low = start_hi = RATE_INVALID; - - for (;;) { - high_low = - il4965_rs_get_adjacent_rate(il, rate, rate_mask, - tbl->lq_type); - - low = high_low & 0xff; - high = (high_low >> 8) & 0xff; - - /* - * Lower the "search" bit rate, to give new "search" mode - * approximately the same throughput as "active" if: - * - * 1) "Active" mode has been working modestly well (but not - * great), and expected "search" throughput (under perfect - * conditions) at candidate rate is above the actual - * measured "active" throughput (but less than expected - * "active" throughput under perfect conditions). - * OR - * 2) "Active" mode has been working perfectly or very well - * and expected "search" throughput (under perfect - * conditions) at candidate rate is above expected - * "active" throughput (under perfect conditions). - */ - if ((100 * tpt_tbl[rate] > lq_sta->last_tpt && - (active_sr > RATE_DECREASE_TH && active_sr <= RATE_HIGH_TH - && tpt_tbl[rate] <= active_tpt)) || - (active_sr >= RATE_SCALE_SWITCH && - tpt_tbl[rate] > active_tpt)) { - - /* (2nd or later pass) - * If we've already tried to raise the rate, and are - * now trying to lower it, use the higher rate. */ - if (start_hi != RATE_INVALID) { - new_rate = start_hi; - break; - } - - new_rate = rate; - - /* Loop again with lower rate */ - if (low != RATE_INVALID) - rate = low; - - /* Lower rate not available, use the original */ - else - break; - - /* Else try to raise the "search" rate to match "active" */ - } else { - /* (2nd or later pass) - * If we've already tried to lower the rate, and are - * now trying to raise it, use the lower rate. */ - if (new_rate != RATE_INVALID) - break; - - /* Loop again with higher rate */ - else if (high != RATE_INVALID) { - start_hi = high; - rate = high; - - /* Higher rate not available, use the original */ - } else { - new_rate = rate; - break; - } - } - } - - return new_rate; -} - -/* - * Set up search table for MIMO2 - */ -static int -il4965_rs_switch_to_mimo2(struct il_priv *il, struct il_lq_sta *lq_sta, - struct ieee80211_conf *conf, - struct ieee80211_sta *sta, - struct il_scale_tbl_info *tbl, int idx) -{ - u16 rate_mask; - s32 rate; - s8 is_green = lq_sta->is_green; - - if (!conf_is_ht(conf) || !sta->ht_cap.ht_supported) - return -1; - - if (sta->smps_mode == IEEE80211_SMPS_STATIC) - return -1; - - /* Need both Tx chains/antennas to support MIMO */ - if (il->hw_params.tx_chains_num < 2) - return -1; - - D_RATE("LQ: try to switch to MIMO2\n"); - - tbl->lq_type = LQ_MIMO2; - tbl->is_dup = lq_sta->is_dup; - tbl->action = 0; - tbl->max_search = IL_MAX_SEARCH; - rate_mask = lq_sta->active_mimo2_rate; - - if (il_is_ht40_tx_allowed(il, &sta->ht_cap)) - tbl->is_ht40 = 1; - else - tbl->is_ht40 = 0; - - il4965_rs_set_expected_tpt_table(lq_sta, tbl); - - rate = il4965_rs_get_best_rate(il, lq_sta, tbl, rate_mask, idx); - - D_RATE("LQ: MIMO2 best rate %d mask %X\n", rate, rate_mask); - if (rate == RATE_INVALID || !((1 << rate) & rate_mask)) { - D_RATE("Can't switch with idx %d rate mask %x\n", rate, - rate_mask); - return -1; - } - tbl->current_rate = - il4965_rate_n_flags_from_tbl(il, tbl, rate, is_green); - - D_RATE("LQ: Switch to new mcs %X idx is green %X\n", tbl->current_rate, - is_green); - return 0; -} - -/* - * Set up search table for SISO - */ -static int -il4965_rs_switch_to_siso(struct il_priv *il, struct il_lq_sta *lq_sta, - struct ieee80211_conf *conf, struct ieee80211_sta *sta, - struct il_scale_tbl_info *tbl, int idx) -{ - u16 rate_mask; - u8 is_green = lq_sta->is_green; - s32 rate; - - if (!conf_is_ht(conf) || !sta->ht_cap.ht_supported) - return -1; - - D_RATE("LQ: try to switch to SISO\n"); - - tbl->is_dup = lq_sta->is_dup; - tbl->lq_type = LQ_SISO; - tbl->action = 0; - tbl->max_search = IL_MAX_SEARCH; - rate_mask = lq_sta->active_siso_rate; - - if (il_is_ht40_tx_allowed(il, &sta->ht_cap)) - tbl->is_ht40 = 1; - else - tbl->is_ht40 = 0; - - if (is_green) - tbl->is_SGI = 0; /*11n spec: no SGI in SISO+Greenfield */ - - il4965_rs_set_expected_tpt_table(lq_sta, tbl); - rate = il4965_rs_get_best_rate(il, lq_sta, tbl, rate_mask, idx); - - D_RATE("LQ: get best rate %d mask %X\n", rate, rate_mask); - if (rate == RATE_INVALID || !((1 << rate) & rate_mask)) { - D_RATE("can not switch with idx %d rate mask %x\n", rate, - rate_mask); - return -1; - } - tbl->current_rate = - il4965_rate_n_flags_from_tbl(il, tbl, rate, is_green); - D_RATE("LQ: Switch to new mcs %X idx is green %X\n", tbl->current_rate, - is_green); - return 0; -} - -/* - * Try to switch to new modulation mode from legacy - */ -static int -il4965_rs_move_legacy_other(struct il_priv *il, struct il_lq_sta *lq_sta, - struct ieee80211_conf *conf, - struct ieee80211_sta *sta, int idx) -{ - struct il_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); - struct il_scale_tbl_info *search_tbl = - &(lq_sta->lq_info[(1 - lq_sta->active_tbl)]); - struct il_rate_scale_data *win = &(tbl->win[idx]); - u32 sz = - (sizeof(struct il_scale_tbl_info) - - (sizeof(struct il_rate_scale_data) * RATE_COUNT)); - u8 start_action; - u8 valid_tx_ant = il->hw_params.valid_tx_ant; - u8 tx_chains_num = il->hw_params.tx_chains_num; - int ret = 0; - u8 update_search_tbl_counter = 0; - - tbl->action = IL_LEGACY_SWITCH_SISO; - - start_action = tbl->action; - for (;;) { - lq_sta->action_counter++; - switch (tbl->action) { - case IL_LEGACY_SWITCH_ANTENNA1: - case IL_LEGACY_SWITCH_ANTENNA2: - D_RATE("LQ: Legacy toggle Antenna\n"); - - if ((tbl->action == IL_LEGACY_SWITCH_ANTENNA1 && - tx_chains_num <= 1) || - (tbl->action == IL_LEGACY_SWITCH_ANTENNA2 && - tx_chains_num <= 2)) - break; - - /* Don't change antenna if success has been great */ - if (win->success_ratio >= IL_RS_GOOD_RATIO) - break; - - /* Set up search table to try other antenna */ - memcpy(search_tbl, tbl, sz); - - if (il4965_rs_toggle_antenna - (valid_tx_ant, &search_tbl->current_rate, - search_tbl)) { - update_search_tbl_counter = 1; - il4965_rs_set_expected_tpt_table(lq_sta, - search_tbl); - goto out; - } - break; - case IL_LEGACY_SWITCH_SISO: - D_RATE("LQ: Legacy switch to SISO\n"); - - /* Set up search table to try SISO */ - memcpy(search_tbl, tbl, sz); - search_tbl->is_SGI = 0; - ret = - il4965_rs_switch_to_siso(il, lq_sta, conf, sta, - search_tbl, idx); - if (!ret) { - lq_sta->action_counter = 0; - goto out; - } - - break; - case IL_LEGACY_SWITCH_MIMO2_AB: - case IL_LEGACY_SWITCH_MIMO2_AC: - case IL_LEGACY_SWITCH_MIMO2_BC: - D_RATE("LQ: Legacy switch to MIMO2\n"); - - /* Set up search table to try MIMO */ - memcpy(search_tbl, tbl, sz); - search_tbl->is_SGI = 0; - - if (tbl->action == IL_LEGACY_SWITCH_MIMO2_AB) - search_tbl->ant_type = ANT_AB; - else if (tbl->action == IL_LEGACY_SWITCH_MIMO2_AC) - search_tbl->ant_type = ANT_AC; - else - search_tbl->ant_type = ANT_BC; - - if (!il4965_rs_is_valid_ant - (valid_tx_ant, search_tbl->ant_type)) - break; - - ret = - il4965_rs_switch_to_mimo2(il, lq_sta, conf, sta, - search_tbl, idx); - if (!ret) { - lq_sta->action_counter = 0; - goto out; - } - break; - } - tbl->action++; - if (tbl->action > IL_LEGACY_SWITCH_MIMO2_BC) - tbl->action = IL_LEGACY_SWITCH_ANTENNA1; - - if (tbl->action == start_action) - break; - - } - search_tbl->lq_type = LQ_NONE; - return 0; - -out: - lq_sta->search_better_tbl = 1; - tbl->action++; - if (tbl->action > IL_LEGACY_SWITCH_MIMO2_BC) - tbl->action = IL_LEGACY_SWITCH_ANTENNA1; - if (update_search_tbl_counter) - search_tbl->action = tbl->action; - return 0; - -} - -/* - * Try to switch to new modulation mode from SISO - */ -static int -il4965_rs_move_siso_to_other(struct il_priv *il, struct il_lq_sta *lq_sta, - struct ieee80211_conf *conf, - struct ieee80211_sta *sta, int idx) -{ - u8 is_green = lq_sta->is_green; - struct il_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); - struct il_scale_tbl_info *search_tbl = - &(lq_sta->lq_info[(1 - lq_sta->active_tbl)]); - struct il_rate_scale_data *win = &(tbl->win[idx]); - struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; - u32 sz = - (sizeof(struct il_scale_tbl_info) - - (sizeof(struct il_rate_scale_data) * RATE_COUNT)); - u8 start_action; - u8 valid_tx_ant = il->hw_params.valid_tx_ant; - u8 tx_chains_num = il->hw_params.tx_chains_num; - u8 update_search_tbl_counter = 0; - int ret; - - start_action = tbl->action; - - for (;;) { - lq_sta->action_counter++; - switch (tbl->action) { - case IL_SISO_SWITCH_ANTENNA1: - case IL_SISO_SWITCH_ANTENNA2: - D_RATE("LQ: SISO toggle Antenna\n"); - if ((tbl->action == IL_SISO_SWITCH_ANTENNA1 && - tx_chains_num <= 1) || - (tbl->action == IL_SISO_SWITCH_ANTENNA2 && - tx_chains_num <= 2)) - break; - - if (win->success_ratio >= IL_RS_GOOD_RATIO) - break; - - memcpy(search_tbl, tbl, sz); - if (il4965_rs_toggle_antenna - (valid_tx_ant, &search_tbl->current_rate, - search_tbl)) { - update_search_tbl_counter = 1; - goto out; - } - break; - case IL_SISO_SWITCH_MIMO2_AB: - case IL_SISO_SWITCH_MIMO2_AC: - case IL_SISO_SWITCH_MIMO2_BC: - D_RATE("LQ: SISO switch to MIMO2\n"); - memcpy(search_tbl, tbl, sz); - search_tbl->is_SGI = 0; - - if (tbl->action == IL_SISO_SWITCH_MIMO2_AB) - search_tbl->ant_type = ANT_AB; - else if (tbl->action == IL_SISO_SWITCH_MIMO2_AC) - search_tbl->ant_type = ANT_AC; - else - search_tbl->ant_type = ANT_BC; - - if (!il4965_rs_is_valid_ant - (valid_tx_ant, search_tbl->ant_type)) - break; - - ret = - il4965_rs_switch_to_mimo2(il, lq_sta, conf, sta, - search_tbl, idx); - if (!ret) - goto out; - break; - case IL_SISO_SWITCH_GI: - if (!tbl->is_ht40 && - !(ht_cap->cap & IEEE80211_HT_CAP_SGI_20)) - break; - if (tbl->is_ht40 && - !(ht_cap->cap & IEEE80211_HT_CAP_SGI_40)) - break; - - D_RATE("LQ: SISO toggle SGI/NGI\n"); - - memcpy(search_tbl, tbl, sz); - if (is_green) { - if (!tbl->is_SGI) - break; - else - IL_ERR("SGI was set in GF+SISO\n"); - } - search_tbl->is_SGI = !tbl->is_SGI; - il4965_rs_set_expected_tpt_table(lq_sta, search_tbl); - if (tbl->is_SGI) { - s32 tpt = lq_sta->last_tpt / 100; - if (tpt >= search_tbl->expected_tpt[idx]) - break; - } - search_tbl->current_rate = - il4965_rate_n_flags_from_tbl(il, search_tbl, idx, - is_green); - update_search_tbl_counter = 1; - goto out; - } - tbl->action++; - if (tbl->action > IL_SISO_SWITCH_GI) - tbl->action = IL_SISO_SWITCH_ANTENNA1; - - if (tbl->action == start_action) - break; - } - search_tbl->lq_type = LQ_NONE; - return 0; - -out: - lq_sta->search_better_tbl = 1; - tbl->action++; - if (tbl->action > IL_SISO_SWITCH_GI) - tbl->action = IL_SISO_SWITCH_ANTENNA1; - if (update_search_tbl_counter) - search_tbl->action = tbl->action; - - return 0; -} - -/* - * Try to switch to new modulation mode from MIMO2 - */ -static int -il4965_rs_move_mimo2_to_other(struct il_priv *il, struct il_lq_sta *lq_sta, - struct ieee80211_conf *conf, - struct ieee80211_sta *sta, int idx) -{ - s8 is_green = lq_sta->is_green; - struct il_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); - struct il_scale_tbl_info *search_tbl = - &(lq_sta->lq_info[(1 - lq_sta->active_tbl)]); - struct il_rate_scale_data *win = &(tbl->win[idx]); - struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; - u32 sz = - (sizeof(struct il_scale_tbl_info) - - (sizeof(struct il_rate_scale_data) * RATE_COUNT)); - u8 start_action; - u8 valid_tx_ant = il->hw_params.valid_tx_ant; - u8 tx_chains_num = il->hw_params.tx_chains_num; - u8 update_search_tbl_counter = 0; - int ret; - - start_action = tbl->action; - for (;;) { - lq_sta->action_counter++; - switch (tbl->action) { - case IL_MIMO2_SWITCH_ANTENNA1: - case IL_MIMO2_SWITCH_ANTENNA2: - D_RATE("LQ: MIMO2 toggle Antennas\n"); - - if (tx_chains_num <= 2) - break; - - if (win->success_ratio >= IL_RS_GOOD_RATIO) - break; - - memcpy(search_tbl, tbl, sz); - if (il4965_rs_toggle_antenna - (valid_tx_ant, &search_tbl->current_rate, - search_tbl)) { - update_search_tbl_counter = 1; - goto out; - } - break; - case IL_MIMO2_SWITCH_SISO_A: - case IL_MIMO2_SWITCH_SISO_B: - case IL_MIMO2_SWITCH_SISO_C: - D_RATE("LQ: MIMO2 switch to SISO\n"); - - /* Set up new search table for SISO */ - memcpy(search_tbl, tbl, sz); - - if (tbl->action == IL_MIMO2_SWITCH_SISO_A) - search_tbl->ant_type = ANT_A; - else if (tbl->action == IL_MIMO2_SWITCH_SISO_B) - search_tbl->ant_type = ANT_B; - else - search_tbl->ant_type = ANT_C; - - if (!il4965_rs_is_valid_ant - (valid_tx_ant, search_tbl->ant_type)) - break; - - ret = - il4965_rs_switch_to_siso(il, lq_sta, conf, sta, - search_tbl, idx); - if (!ret) - goto out; - - break; - - case IL_MIMO2_SWITCH_GI: - if (!tbl->is_ht40 && - !(ht_cap->cap & IEEE80211_HT_CAP_SGI_20)) - break; - if (tbl->is_ht40 && - !(ht_cap->cap & IEEE80211_HT_CAP_SGI_40)) - break; - - D_RATE("LQ: MIMO2 toggle SGI/NGI\n"); - - /* Set up new search table for MIMO2 */ - memcpy(search_tbl, tbl, sz); - search_tbl->is_SGI = !tbl->is_SGI; - il4965_rs_set_expected_tpt_table(lq_sta, search_tbl); - /* - * If active table already uses the fastest possible - * modulation (dual stream with short guard interval), - * and it's working well, there's no need to look - * for a better type of modulation! - */ - if (tbl->is_SGI) { - s32 tpt = lq_sta->last_tpt / 100; - if (tpt >= search_tbl->expected_tpt[idx]) - break; - } - search_tbl->current_rate = - il4965_rate_n_flags_from_tbl(il, search_tbl, idx, - is_green); - update_search_tbl_counter = 1; - goto out; - - } - tbl->action++; - if (tbl->action > IL_MIMO2_SWITCH_GI) - tbl->action = IL_MIMO2_SWITCH_ANTENNA1; - - if (tbl->action == start_action) - break; - } - search_tbl->lq_type = LQ_NONE; - return 0; -out: - lq_sta->search_better_tbl = 1; - tbl->action++; - if (tbl->action > IL_MIMO2_SWITCH_GI) - tbl->action = IL_MIMO2_SWITCH_ANTENNA1; - if (update_search_tbl_counter) - search_tbl->action = tbl->action; - - return 0; - -} - -/* - * Check whether we should continue using same modulation mode, or - * begin search for a new mode, based on: - * 1) # tx successes or failures while using this mode - * 2) # times calling this function - * 3) elapsed time in this mode (not used, for now) - */ -static void -il4965_rs_stay_in_table(struct il_lq_sta *lq_sta, bool force_search) -{ - struct il_scale_tbl_info *tbl; - int i; - int active_tbl; - int flush_interval_passed = 0; - struct il_priv *il; - - il = lq_sta->drv; - active_tbl = lq_sta->active_tbl; - - tbl = &(lq_sta->lq_info[active_tbl]); - - /* If we've been disallowing search, see if we should now allow it */ - if (lq_sta->stay_in_tbl) { - - /* Elapsed time using current modulation mode */ - if (lq_sta->flush_timer) - flush_interval_passed = - time_after(jiffies, - (unsigned long)(lq_sta->flush_timer + - RATE_SCALE_FLUSH_INTVL)); - - /* - * Check if we should allow search for new modulation mode. - * If many frames have failed or succeeded, or we've used - * this same modulation for a long time, allow search, and - * reset history stats that keep track of whether we should - * allow a new search. Also (below) reset all bitmaps and - * stats in active history. - */ - if (force_search || - lq_sta->total_failed > lq_sta->max_failure_limit || - lq_sta->total_success > lq_sta->max_success_limit || - (!lq_sta->search_better_tbl && lq_sta->flush_timer && - flush_interval_passed)) { - D_RATE("LQ: stay is expired %d %d %d\n", - lq_sta->total_failed, lq_sta->total_success, - flush_interval_passed); - - /* Allow search for new mode */ - lq_sta->stay_in_tbl = 0; /* only place reset */ - lq_sta->total_failed = 0; - lq_sta->total_success = 0; - lq_sta->flush_timer = 0; - - /* - * Else if we've used this modulation mode enough repetitions - * (regardless of elapsed time or success/failure), reset - * history bitmaps and rate-specific stats for all rates in - * active table. - */ - } else { - lq_sta->table_count++; - if (lq_sta->table_count >= lq_sta->table_count_limit) { - lq_sta->table_count = 0; - - D_RATE("LQ: stay in table clear win\n"); - for (i = 0; i < RATE_COUNT; i++) - il4965_rs_rate_scale_clear_win(& - (tbl-> - win - [i])); - } - } - - /* If transitioning to allow "search", reset all history - * bitmaps and stats in active table (this will become the new - * "search" table). */ - if (!lq_sta->stay_in_tbl) { - for (i = 0; i < RATE_COUNT; i++) - il4965_rs_rate_scale_clear_win(&(tbl->win[i])); - } - } -} - -/* - * setup rate table in uCode - */ -static void -il4965_rs_update_rate_tbl(struct il_priv *il, struct il_lq_sta *lq_sta, - struct il_scale_tbl_info *tbl, int idx, u8 is_green) -{ - u32 rate; - - /* Update uCode's rate table. */ - rate = il4965_rate_n_flags_from_tbl(il, tbl, idx, is_green); - il4965_rs_fill_link_cmd(il, lq_sta, rate); - il_send_lq_cmd(il, &lq_sta->lq, CMD_ASYNC, false); -} - -/* - * Do rate scaling and search for new modulation mode. - */ -static void -il4965_rs_rate_scale_perform(struct il_priv *il, struct sk_buff *skb, - struct ieee80211_sta *sta, - struct il_lq_sta *lq_sta) -{ - struct ieee80211_hw *hw = il->hw; - struct ieee80211_conf *conf = &hw->conf; - struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; - int low = RATE_INVALID; - int high = RATE_INVALID; - int idx; - int i; - struct il_rate_scale_data *win = NULL; - int current_tpt = IL_INVALID_VALUE; - int low_tpt = IL_INVALID_VALUE; - int high_tpt = IL_INVALID_VALUE; - u32 fail_count; - s8 scale_action = 0; - u16 rate_mask; - u8 update_lq = 0; - struct il_scale_tbl_info *tbl, *tbl1; - u16 rate_scale_idx_msk = 0; - u8 is_green = 0; - u8 active_tbl = 0; - u8 done_search = 0; - u16 high_low; - s32 sr; - u8 tid = MAX_TID_COUNT; - struct il_tid_data *tid_data; - - D_RATE("rate scale calculate new rate for skb\n"); - - /* Send management frames and NO_ACK data using lowest rate. */ - /* TODO: this could probably be improved.. */ - if (!ieee80211_is_data(hdr->frame_control) || - (info->flags & IEEE80211_TX_CTL_NO_ACK)) - return; - - lq_sta->supp_rates = sta->supp_rates[lq_sta->band]; - - tid = il4965_rs_tl_add_packet(lq_sta, hdr); - if (tid != MAX_TID_COUNT && (lq_sta->tx_agg_tid_en & (1 << tid))) { - tid_data = &il->stations[lq_sta->lq.sta_id].tid[tid]; - if (tid_data->agg.state == IL_AGG_OFF) - lq_sta->is_agg = 0; - else - lq_sta->is_agg = 1; - } else - lq_sta->is_agg = 0; - - /* - * Select rate-scale / modulation-mode table to work with in - * the rest of this function: "search" if searching for better - * modulation mode, or "active" if doing rate scaling within a mode. - */ - if (!lq_sta->search_better_tbl) - active_tbl = lq_sta->active_tbl; - else - active_tbl = 1 - lq_sta->active_tbl; - - tbl = &(lq_sta->lq_info[active_tbl]); - if (is_legacy(tbl->lq_type)) - lq_sta->is_green = 0; - else - lq_sta->is_green = il4965_rs_use_green(il, sta); - is_green = lq_sta->is_green; - - /* current tx rate */ - idx = lq_sta->last_txrate_idx; - - D_RATE("Rate scale idx %d for type %d\n", idx, tbl->lq_type); - - /* rates available for this association, and for modulation mode */ - rate_mask = il4965_rs_get_supported_rates(lq_sta, hdr, tbl->lq_type); - - D_RATE("mask 0x%04X\n", rate_mask); - - /* mask with station rate restriction */ - if (is_legacy(tbl->lq_type)) { - if (lq_sta->band == IEEE80211_BAND_5GHZ) - /* supp_rates has no CCK bits in A mode */ - rate_scale_idx_msk = - (u16) (rate_mask & - (lq_sta->supp_rates << IL_FIRST_OFDM_RATE)); - else - rate_scale_idx_msk = - (u16) (rate_mask & lq_sta->supp_rates); - - } else - rate_scale_idx_msk = rate_mask; - - if (!rate_scale_idx_msk) - rate_scale_idx_msk = rate_mask; - - if (!((1 << idx) & rate_scale_idx_msk)) { - IL_ERR("Current Rate is not valid\n"); - if (lq_sta->search_better_tbl) { - /* revert to active table if search table is not valid */ - tbl->lq_type = LQ_NONE; - lq_sta->search_better_tbl = 0; - tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); - /* get "active" rate info */ - idx = il4965_hwrate_to_plcp_idx(tbl->current_rate); - il4965_rs_update_rate_tbl(il, lq_sta, tbl, idx, - is_green); - } - return; - } - - /* Get expected throughput table and history win for current rate */ - if (!tbl->expected_tpt) { - IL_ERR("tbl->expected_tpt is NULL\n"); - return; - } - - /* force user max rate if set by user */ - if (lq_sta->max_rate_idx != -1 && lq_sta->max_rate_idx < idx) { - idx = lq_sta->max_rate_idx; - update_lq = 1; - win = &(tbl->win[idx]); - goto lq_update; - } - - win = &(tbl->win[idx]); - - /* - * If there is not enough history to calculate actual average - * throughput, keep analyzing results of more tx frames, without - * changing rate or mode (bypass most of the rest of this function). - * Set up new rate table in uCode only if old rate is not supported - * in current association (use new rate found above). - */ - fail_count = win->counter - win->success_counter; - if (fail_count < RATE_MIN_FAILURE_TH && - win->success_counter < RATE_MIN_SUCCESS_TH) { - D_RATE("LQ: still below TH. succ=%d total=%d " "for idx %d\n", - win->success_counter, win->counter, idx); - - /* Can't calculate this yet; not enough history */ - win->average_tpt = IL_INVALID_VALUE; - - /* Should we stay with this modulation mode, - * or search for a new one? */ - il4965_rs_stay_in_table(lq_sta, false); - - goto out; - } - /* Else we have enough samples; calculate estimate of - * actual average throughput */ - if (win->average_tpt != - ((win->success_ratio * tbl->expected_tpt[idx] + 64) / 128)) { - IL_ERR("expected_tpt should have been calculated by now\n"); - win->average_tpt = - ((win->success_ratio * tbl->expected_tpt[idx] + 64) / 128); - } - - /* If we are searching for better modulation mode, check success. */ - if (lq_sta->search_better_tbl) { - /* If good success, continue using the "search" mode; - * no need to send new link quality command, since we're - * continuing to use the setup that we've been trying. */ - if (win->average_tpt > lq_sta->last_tpt) { - - D_RATE("LQ: SWITCHING TO NEW TBL " - "suc=%d cur-tpt=%d old-tpt=%d\n", - win->success_ratio, win->average_tpt, - lq_sta->last_tpt); - - if (!is_legacy(tbl->lq_type)) - lq_sta->enable_counter = 1; - - /* Swap tables; "search" becomes "active" */ - lq_sta->active_tbl = active_tbl; - current_tpt = win->average_tpt; - - /* Else poor success; go back to mode in "active" table */ - } else { - - D_RATE("LQ: GOING BACK TO THE OLD TBL " - "suc=%d cur-tpt=%d old-tpt=%d\n", - win->success_ratio, win->average_tpt, - lq_sta->last_tpt); - - /* Nullify "search" table */ - tbl->lq_type = LQ_NONE; - - /* Revert to "active" table */ - active_tbl = lq_sta->active_tbl; - tbl = &(lq_sta->lq_info[active_tbl]); - - /* Revert to "active" rate and throughput info */ - idx = il4965_hwrate_to_plcp_idx(tbl->current_rate); - current_tpt = lq_sta->last_tpt; - - /* Need to set up a new rate table in uCode */ - update_lq = 1; - } - - /* Either way, we've made a decision; modulation mode - * search is done, allow rate adjustment next time. */ - lq_sta->search_better_tbl = 0; - done_search = 1; /* Don't switch modes below! */ - goto lq_update; - } - - /* (Else) not in search of better modulation mode, try for better - * starting rate, while staying in this mode. */ - high_low = - il4965_rs_get_adjacent_rate(il, idx, rate_scale_idx_msk, - tbl->lq_type); - low = high_low & 0xff; - high = (high_low >> 8) & 0xff; - - /* If user set max rate, dont allow higher than user constrain */ - if (lq_sta->max_rate_idx != -1 && lq_sta->max_rate_idx < high) - high = RATE_INVALID; - - sr = win->success_ratio; - - /* Collect measured throughputs for current and adjacent rates */ - current_tpt = win->average_tpt; - if (low != RATE_INVALID) - low_tpt = tbl->win[low].average_tpt; - if (high != RATE_INVALID) - high_tpt = tbl->win[high].average_tpt; - - scale_action = 0; - - /* Too many failures, decrease rate */ - if (sr <= RATE_DECREASE_TH || current_tpt == 0) { - D_RATE("decrease rate because of low success_ratio\n"); - scale_action = -1; - - /* No throughput measured yet for adjacent rates; try increase. */ - } else if (low_tpt == IL_INVALID_VALUE && high_tpt == IL_INVALID_VALUE) { - - if (high != RATE_INVALID && sr >= RATE_INCREASE_TH) - scale_action = 1; - else if (low != RATE_INVALID) - scale_action = 0; - } - - /* Both adjacent throughputs are measured, but neither one has better - * throughput; we're using the best rate, don't change it! */ - else if (low_tpt != IL_INVALID_VALUE && high_tpt != IL_INVALID_VALUE && - low_tpt < current_tpt && high_tpt < current_tpt) - scale_action = 0; - - /* At least one adjacent rate's throughput is measured, - * and may have better performance. */ - else { - /* Higher adjacent rate's throughput is measured */ - if (high_tpt != IL_INVALID_VALUE) { - /* Higher rate has better throughput */ - if (high_tpt > current_tpt && sr >= RATE_INCREASE_TH) - scale_action = 1; - else - scale_action = 0; - - /* Lower adjacent rate's throughput is measured */ - } else if (low_tpt != IL_INVALID_VALUE) { - /* Lower rate has better throughput */ - if (low_tpt > current_tpt) { - D_RATE("decrease rate because of low tpt\n"); - scale_action = -1; - } else if (sr >= RATE_INCREASE_TH) { - scale_action = 1; - } - } - } - - /* Sanity check; asked for decrease, but success rate or throughput - * has been good at old rate. Don't change it. */ - if (scale_action == -1 && low != RATE_INVALID && - (sr > RATE_HIGH_TH || current_tpt > 100 * tbl->expected_tpt[low])) - scale_action = 0; - - switch (scale_action) { - case -1: - /* Decrease starting rate, update uCode's rate table */ - if (low != RATE_INVALID) { - update_lq = 1; - idx = low; - } - - break; - case 1: - /* Increase starting rate, update uCode's rate table */ - if (high != RATE_INVALID) { - update_lq = 1; - idx = high; - } - - break; - case 0: - /* No change */ - default: - break; - } - - D_RATE("choose rate scale idx %d action %d low %d " "high %d type %d\n", - idx, scale_action, low, high, tbl->lq_type); - -lq_update: - /* Replace uCode's rate table for the destination station. */ - if (update_lq) - il4965_rs_update_rate_tbl(il, lq_sta, tbl, idx, is_green); - - /* Should we stay with this modulation mode, - * or search for a new one? */ - il4965_rs_stay_in_table(lq_sta, false); - - /* - * Search for new modulation mode if we're: - * 1) Not changing rates right now - * 2) Not just finishing up a search - * 3) Allowing a new search - */ - if (!update_lq && !done_search && !lq_sta->stay_in_tbl && win->counter) { - /* Save current throughput to compare with "search" throughput */ - lq_sta->last_tpt = current_tpt; - - /* Select a new "search" modulation mode to try. - * If one is found, set up the new "search" table. */ - if (is_legacy(tbl->lq_type)) - il4965_rs_move_legacy_other(il, lq_sta, conf, sta, idx); - else if (is_siso(tbl->lq_type)) - il4965_rs_move_siso_to_other(il, lq_sta, conf, sta, - idx); - else /* (is_mimo2(tbl->lq_type)) */ - il4965_rs_move_mimo2_to_other(il, lq_sta, conf, sta, - idx); - - /* If new "search" mode was selected, set up in uCode table */ - if (lq_sta->search_better_tbl) { - /* Access the "search" table, clear its history. */ - tbl = &(lq_sta->lq_info[(1 - lq_sta->active_tbl)]); - for (i = 0; i < RATE_COUNT; i++) - il4965_rs_rate_scale_clear_win(&(tbl->win[i])); - - /* Use new "search" start rate */ - idx = il4965_hwrate_to_plcp_idx(tbl->current_rate); - - D_RATE("Switch current mcs: %X idx: %d\n", - tbl->current_rate, idx); - il4965_rs_fill_link_cmd(il, lq_sta, tbl->current_rate); - il_send_lq_cmd(il, &lq_sta->lq, CMD_ASYNC, false); - } else - done_search = 1; - } - - if (done_search && !lq_sta->stay_in_tbl) { - /* If the "active" (non-search) mode was legacy, - * and we've tried switching antennas, - * but we haven't been able to try HT modes (not available), - * stay with best antenna legacy modulation for a while - * before next round of mode comparisons. */ - tbl1 = &(lq_sta->lq_info[lq_sta->active_tbl]); - if (is_legacy(tbl1->lq_type) && !conf_is_ht(conf) && - lq_sta->action_counter > tbl1->max_search) { - D_RATE("LQ: STAY in legacy table\n"); - il4965_rs_set_stay_in_table(il, 1, lq_sta); - } - - /* If we're in an HT mode, and all 3 mode switch actions - * have been tried and compared, stay in this best modulation - * mode for a while before next round of mode comparisons. */ - if (lq_sta->enable_counter && - lq_sta->action_counter >= tbl1->max_search) { - if (lq_sta->last_tpt > IL_AGG_TPT_THREHOLD && - (lq_sta->tx_agg_tid_en & (1 << tid)) && - tid != MAX_TID_COUNT) { - tid_data = - &il->stations[lq_sta->lq.sta_id].tid[tid]; - if (tid_data->agg.state == IL_AGG_OFF) { - D_RATE("try to aggregate tid %d\n", - tid); - il4965_rs_tl_turn_on_agg(il, tid, - lq_sta, sta); - } - } - il4965_rs_set_stay_in_table(il, 0, lq_sta); - } - } - -out: - tbl->current_rate = - il4965_rate_n_flags_from_tbl(il, tbl, idx, is_green); - i = idx; - lq_sta->last_txrate_idx = i; -} - -/** - * il4965_rs_initialize_lq - Initialize a station's hardware rate table - * - * The uCode's station table contains a table of fallback rates - * for automatic fallback during transmission. - * - * NOTE: This sets up a default set of values. These will be replaced later - * if the driver's iwl-4965-rs rate scaling algorithm is used, instead of - * rc80211_simple. - * - * NOTE: Run C_ADD_STA command to set up station table entry, before - * calling this function (which runs C_TX_LINK_QUALITY_CMD, - * which requires station table entry to exist). - */ -static void -il4965_rs_initialize_lq(struct il_priv *il, struct ieee80211_conf *conf, - struct ieee80211_sta *sta, struct il_lq_sta *lq_sta) -{ - struct il_scale_tbl_info *tbl; - int rate_idx; - int i; - u32 rate; - u8 use_green; - u8 active_tbl = 0; - u8 valid_tx_ant; - struct il_station_priv *sta_priv; - - if (!sta || !lq_sta) - return; - - use_green = il4965_rs_use_green(il, sta); - sta_priv = (void *)sta->drv_priv; - - i = lq_sta->last_txrate_idx; - - valid_tx_ant = il->hw_params.valid_tx_ant; - - if (!lq_sta->search_better_tbl) - active_tbl = lq_sta->active_tbl; - else - active_tbl = 1 - lq_sta->active_tbl; - - tbl = &(lq_sta->lq_info[active_tbl]); - - if (i < 0 || i >= RATE_COUNT) - i = 0; - - rate = il_rates[i].plcp; - tbl->ant_type = il4965_first_antenna(valid_tx_ant); - rate |= tbl->ant_type << RATE_MCS_ANT_POS; - - if (i >= IL_FIRST_CCK_RATE && i <= IL_LAST_CCK_RATE) - rate |= RATE_MCS_CCK_MSK; - - il4965_rs_get_tbl_info_from_mcs(rate, il->band, tbl, &rate_idx); - if (!il4965_rs_is_valid_ant(valid_tx_ant, tbl->ant_type)) - il4965_rs_toggle_antenna(valid_tx_ant, &rate, tbl); - - rate = il4965_rate_n_flags_from_tbl(il, tbl, rate_idx, use_green); - tbl->current_rate = rate; - il4965_rs_set_expected_tpt_table(lq_sta, tbl); - il4965_rs_fill_link_cmd(NULL, lq_sta, rate); - il->stations[lq_sta->lq.sta_id].lq = &lq_sta->lq; - il_send_lq_cmd(il, &lq_sta->lq, CMD_SYNC, true); -} - -static void -il4965_rs_get_rate(void *il_r, struct ieee80211_sta *sta, void *il_sta, - struct ieee80211_tx_rate_control *txrc) -{ - - struct sk_buff *skb = txrc->skb; - struct ieee80211_supported_band *sband = txrc->sband; - struct il_priv *il __maybe_unused = (struct il_priv *)il_r; - struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); - struct il_lq_sta *lq_sta = il_sta; - int rate_idx; - - D_RATE("rate scale calculate new rate for skb\n"); - - /* Get max rate if user set max rate */ - if (lq_sta) { - lq_sta->max_rate_idx = txrc->max_rate_idx; - if (sband->band == IEEE80211_BAND_5GHZ && - lq_sta->max_rate_idx != -1) - lq_sta->max_rate_idx += IL_FIRST_OFDM_RATE; - if (lq_sta->max_rate_idx < 0 || - lq_sta->max_rate_idx >= RATE_COUNT) - lq_sta->max_rate_idx = -1; - } - - /* Treat uninitialized rate scaling data same as non-existing. */ - if (lq_sta && !lq_sta->drv) { - D_RATE("Rate scaling not initialized yet.\n"); - il_sta = NULL; - } - - /* Send management frames and NO_ACK data using lowest rate. */ - if (rate_control_send_low(sta, il_sta, txrc)) - return; - - if (!lq_sta) - return; - - rate_idx = lq_sta->last_txrate_idx; - - if (lq_sta->last_rate_n_flags & RATE_MCS_HT_MSK) { - rate_idx -= IL_FIRST_OFDM_RATE; - /* 6M and 9M shared same MCS idx */ - rate_idx = (rate_idx > 0) ? (rate_idx - 1) : 0; - if (il4965_rs_extract_rate(lq_sta->last_rate_n_flags) >= - RATE_MIMO2_6M_PLCP) - rate_idx = rate_idx + MCS_IDX_PER_STREAM; - info->control.rates[0].flags = IEEE80211_TX_RC_MCS; - if (lq_sta->last_rate_n_flags & RATE_MCS_SGI_MSK) - info->control.rates[0].flags |= - IEEE80211_TX_RC_SHORT_GI; - if (lq_sta->last_rate_n_flags & RATE_MCS_DUP_MSK) - info->control.rates[0].flags |= - IEEE80211_TX_RC_DUP_DATA; - if (lq_sta->last_rate_n_flags & RATE_MCS_HT40_MSK) - info->control.rates[0].flags |= - IEEE80211_TX_RC_40_MHZ_WIDTH; - if (lq_sta->last_rate_n_flags & RATE_MCS_GF_MSK) - info->control.rates[0].flags |= - IEEE80211_TX_RC_GREEN_FIELD; - } else { - /* Check for invalid rates */ - if (rate_idx < 0 || rate_idx >= RATE_COUNT_LEGACY || - (sband->band == IEEE80211_BAND_5GHZ && - rate_idx < IL_FIRST_OFDM_RATE)) - rate_idx = rate_lowest_index(sband, sta); - /* On valid 5 GHz rate, adjust idx */ - else if (sband->band == IEEE80211_BAND_5GHZ) - rate_idx -= IL_FIRST_OFDM_RATE; - info->control.rates[0].flags = 0; - } - info->control.rates[0].idx = rate_idx; - info->control.rates[0].count = 1; -} - -static void * -il4965_rs_alloc_sta(void *il_rate, struct ieee80211_sta *sta, gfp_t gfp) -{ - struct il_station_priv *sta_priv = - (struct il_station_priv *)sta->drv_priv; - struct il_priv *il; - - il = (struct il_priv *)il_rate; - D_RATE("create station rate scale win\n"); - - return &sta_priv->lq_sta; -} - -/* - * Called after adding a new station to initialize rate scaling - */ -void -il4965_rs_rate_init(struct il_priv *il, struct ieee80211_sta *sta, u8 sta_id) -{ - int i, j; - struct ieee80211_hw *hw = il->hw; - struct ieee80211_conf *conf = &il->hw->conf; - struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; - struct il_station_priv *sta_priv; - struct il_lq_sta *lq_sta; - struct ieee80211_supported_band *sband; - - sta_priv = (struct il_station_priv *)sta->drv_priv; - lq_sta = &sta_priv->lq_sta; - sband = hw->wiphy->bands[conf->chandef.chan->band]; - - lq_sta->lq.sta_id = sta_id; - - for (j = 0; j < LQ_SIZE; j++) - for (i = 0; i < RATE_COUNT; i++) - il4965_rs_rate_scale_clear_win(&lq_sta->lq_info[j]. - win[i]); - - lq_sta->flush_timer = 0; - lq_sta->supp_rates = sta->supp_rates[sband->band]; - for (j = 0; j < LQ_SIZE; j++) - for (i = 0; i < RATE_COUNT; i++) - il4965_rs_rate_scale_clear_win(&lq_sta->lq_info[j]. - win[i]); - - D_RATE("LQ:" "*** rate scale station global init for station %d ***\n", - sta_id); - /* TODO: what is a good starting rate for STA? About middle? Maybe not - * the lowest or the highest rate.. Could consider using RSSI from - * previous packets? Need to have IEEE 802.1X auth succeed immediately - * after assoc.. */ - - lq_sta->is_dup = 0; - lq_sta->max_rate_idx = -1; - lq_sta->missed_rate_counter = IL_MISSED_RATE_MAX; - lq_sta->is_green = il4965_rs_use_green(il, sta); - lq_sta->active_legacy_rate = il->active_rate & ~(0x1000); - lq_sta->band = il->band; - /* - * active_siso_rate mask includes 9 MBits (bit 5), and CCK (bits 0-3), - * supp_rates[] does not; shift to convert format, force 9 MBits off. - */ - lq_sta->active_siso_rate = ht_cap->mcs.rx_mask[0] << 1; - lq_sta->active_siso_rate |= ht_cap->mcs.rx_mask[0] & 0x1; - lq_sta->active_siso_rate &= ~((u16) 0x2); - lq_sta->active_siso_rate <<= IL_FIRST_OFDM_RATE; - - /* Same here */ - lq_sta->active_mimo2_rate = ht_cap->mcs.rx_mask[1] << 1; - lq_sta->active_mimo2_rate |= ht_cap->mcs.rx_mask[1] & 0x1; - lq_sta->active_mimo2_rate &= ~((u16) 0x2); - lq_sta->active_mimo2_rate <<= IL_FIRST_OFDM_RATE; - - /* These values will be overridden later */ - lq_sta->lq.general_params.single_stream_ant_msk = - il4965_first_antenna(il->hw_params.valid_tx_ant); - lq_sta->lq.general_params.dual_stream_ant_msk = - il->hw_params.valid_tx_ant & ~il4965_first_antenna(il->hw_params. - valid_tx_ant); - if (!lq_sta->lq.general_params.dual_stream_ant_msk) { - lq_sta->lq.general_params.dual_stream_ant_msk = ANT_AB; - } else if (il4965_num_of_ant(il->hw_params.valid_tx_ant) == 2) { - lq_sta->lq.general_params.dual_stream_ant_msk = - il->hw_params.valid_tx_ant; - } - - /* as default allow aggregation for all tids */ - lq_sta->tx_agg_tid_en = IL_AGG_ALL_TID; - lq_sta->drv = il; - - /* Set last_txrate_idx to lowest rate */ - lq_sta->last_txrate_idx = rate_lowest_index(sband, sta); - if (sband->band == IEEE80211_BAND_5GHZ) - lq_sta->last_txrate_idx += IL_FIRST_OFDM_RATE; - lq_sta->is_agg = 0; - -#ifdef CONFIG_MAC80211_DEBUGFS - lq_sta->dbg_fixed_rate = 0; -#endif - - il4965_rs_initialize_lq(il, conf, sta, lq_sta); -} - -static void -il4965_rs_fill_link_cmd(struct il_priv *il, struct il_lq_sta *lq_sta, - u32 new_rate) -{ - struct il_scale_tbl_info tbl_type; - int idx = 0; - int rate_idx; - int repeat_rate = 0; - u8 ant_toggle_cnt = 0; - u8 use_ht_possible = 1; - u8 valid_tx_ant = 0; - struct il_link_quality_cmd *lq_cmd = &lq_sta->lq; - - /* Override starting rate (idx 0) if needed for debug purposes */ - il4965_rs_dbgfs_set_mcs(lq_sta, &new_rate, idx); - - /* Interpret new_rate (rate_n_flags) */ - il4965_rs_get_tbl_info_from_mcs(new_rate, lq_sta->band, &tbl_type, - &rate_idx); - - /* How many times should we repeat the initial rate? */ - if (is_legacy(tbl_type.lq_type)) { - ant_toggle_cnt = 1; - repeat_rate = IL_NUMBER_TRY; - } else { - repeat_rate = IL_HT_NUMBER_TRY; - } - - lq_cmd->general_params.mimo_delimiter = - is_mimo(tbl_type.lq_type) ? 1 : 0; - - /* Fill 1st table entry (idx 0) */ - lq_cmd->rs_table[idx].rate_n_flags = cpu_to_le32(new_rate); - - if (il4965_num_of_ant(tbl_type.ant_type) == 1) { - lq_cmd->general_params.single_stream_ant_msk = - tbl_type.ant_type; - } else if (il4965_num_of_ant(tbl_type.ant_type) == 2) { - lq_cmd->general_params.dual_stream_ant_msk = tbl_type.ant_type; - } - /* otherwise we don't modify the existing value */ - idx++; - repeat_rate--; - if (il) - valid_tx_ant = il->hw_params.valid_tx_ant; - - /* Fill rest of rate table */ - while (idx < LINK_QUAL_MAX_RETRY_NUM) { - /* Repeat initial/next rate. - * For legacy IL_NUMBER_TRY == 1, this loop will not execute. - * For HT IL_HT_NUMBER_TRY == 3, this executes twice. */ - while (repeat_rate > 0 && idx < LINK_QUAL_MAX_RETRY_NUM) { - if (is_legacy(tbl_type.lq_type)) { - if (ant_toggle_cnt < NUM_TRY_BEFORE_ANT_TOGGLE) - ant_toggle_cnt++; - else if (il && - il4965_rs_toggle_antenna(valid_tx_ant, - &new_rate, - &tbl_type)) - ant_toggle_cnt = 1; - } - - /* Override next rate if needed for debug purposes */ - il4965_rs_dbgfs_set_mcs(lq_sta, &new_rate, idx); - - /* Fill next table entry */ - lq_cmd->rs_table[idx].rate_n_flags = - cpu_to_le32(new_rate); - repeat_rate--; - idx++; - } - - il4965_rs_get_tbl_info_from_mcs(new_rate, lq_sta->band, - &tbl_type, &rate_idx); - - /* Indicate to uCode which entries might be MIMO. - * If initial rate was MIMO, this will finally end up - * as (IL_HT_NUMBER_TRY * 2), after 2nd pass, otherwise 0. */ - if (is_mimo(tbl_type.lq_type)) - lq_cmd->general_params.mimo_delimiter = idx; - - /* Get next rate */ - new_rate = - il4965_rs_get_lower_rate(lq_sta, &tbl_type, rate_idx, - use_ht_possible); - - /* How many times should we repeat the next rate? */ - if (is_legacy(tbl_type.lq_type)) { - if (ant_toggle_cnt < NUM_TRY_BEFORE_ANT_TOGGLE) - ant_toggle_cnt++; - else if (il && - il4965_rs_toggle_antenna(valid_tx_ant, - &new_rate, &tbl_type)) - ant_toggle_cnt = 1; - - repeat_rate = IL_NUMBER_TRY; - } else { - repeat_rate = IL_HT_NUMBER_TRY; - } - - /* Don't allow HT rates after next pass. - * il4965_rs_get_lower_rate() will change type to LQ_A or LQ_G. */ - use_ht_possible = 0; - - /* Override next rate if needed for debug purposes */ - il4965_rs_dbgfs_set_mcs(lq_sta, &new_rate, idx); - - /* Fill next table entry */ - lq_cmd->rs_table[idx].rate_n_flags = cpu_to_le32(new_rate); - - idx++; - repeat_rate--; - } - - lq_cmd->agg_params.agg_frame_cnt_limit = LINK_QUAL_AGG_FRAME_LIMIT_DEF; - lq_cmd->agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF; - - lq_cmd->agg_params.agg_time_limit = - cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF); -} - -static void * -il4965_rs_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir) -{ - return hw->priv; -} - -/* rate scale requires free function to be implemented */ -static void -il4965_rs_free(void *il_rate) -{ - return; -} - -static void -il4965_rs_free_sta(void *il_r, struct ieee80211_sta *sta, void *il_sta) -{ - struct il_priv *il __maybe_unused = il_r; - - D_RATE("enter\n"); - D_RATE("leave\n"); -} - -#ifdef CONFIG_MAC80211_DEBUGFS - -static void -il4965_rs_dbgfs_set_mcs(struct il_lq_sta *lq_sta, u32 * rate_n_flags, int idx) -{ - struct il_priv *il; - u8 valid_tx_ant; - u8 ant_sel_tx; - - il = lq_sta->drv; - valid_tx_ant = il->hw_params.valid_tx_ant; - if (lq_sta->dbg_fixed_rate) { - ant_sel_tx = - ((lq_sta-> - dbg_fixed_rate & RATE_MCS_ANT_ABC_MSK) >> - RATE_MCS_ANT_POS); - if ((valid_tx_ant & ant_sel_tx) == ant_sel_tx) { - *rate_n_flags = lq_sta->dbg_fixed_rate; - D_RATE("Fixed rate ON\n"); - } else { - lq_sta->dbg_fixed_rate = 0; - IL_ERR - ("Invalid antenna selection 0x%X, Valid is 0x%X\n", - ant_sel_tx, valid_tx_ant); - D_RATE("Fixed rate OFF\n"); - } - } else { - D_RATE("Fixed rate OFF\n"); - } -} - -static ssize_t -il4965_rs_sta_dbgfs_scale_table_write(struct file *file, - const char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct il_lq_sta *lq_sta = file->private_data; - struct il_priv *il; - char buf[64]; - size_t buf_size; - u32 parsed_rate; - - il = lq_sta->drv; - memset(buf, 0, sizeof(buf)); - buf_size = min(count, sizeof(buf) - 1); - if (copy_from_user(buf, user_buf, buf_size)) - return -EFAULT; - - if (sscanf(buf, "%x", &parsed_rate) == 1) - lq_sta->dbg_fixed_rate = parsed_rate; - else - lq_sta->dbg_fixed_rate = 0; - - lq_sta->active_legacy_rate = 0x0FFF; /* 1 - 54 MBits, includes CCK */ - lq_sta->active_siso_rate = 0x1FD0; /* 6 - 60 MBits, no 9, no CCK */ - lq_sta->active_mimo2_rate = 0x1FD0; /* 6 - 60 MBits, no 9, no CCK */ - - D_RATE("sta_id %d rate 0x%X\n", lq_sta->lq.sta_id, - lq_sta->dbg_fixed_rate); - - if (lq_sta->dbg_fixed_rate) { - il4965_rs_fill_link_cmd(NULL, lq_sta, lq_sta->dbg_fixed_rate); - il_send_lq_cmd(lq_sta->drv, &lq_sta->lq, CMD_ASYNC, false); - } - - return count; -} - -static ssize_t -il4965_rs_sta_dbgfs_scale_table_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - char *buff; - int desc = 0; - int i = 0; - int idx = 0; - ssize_t ret; - - struct il_lq_sta *lq_sta = file->private_data; - struct il_priv *il; - struct il_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); - - il = lq_sta->drv; - buff = kmalloc(1024, GFP_KERNEL); - if (!buff) - return -ENOMEM; - - desc += sprintf(buff + desc, "sta_id %d\n", lq_sta->lq.sta_id); - desc += - sprintf(buff + desc, "failed=%d success=%d rate=0%X\n", - lq_sta->total_failed, lq_sta->total_success, - lq_sta->active_legacy_rate); - desc += - sprintf(buff + desc, "fixed rate 0x%X\n", lq_sta->dbg_fixed_rate); - desc += - sprintf(buff + desc, "valid_tx_ant %s%s%s\n", - (il->hw_params.valid_tx_ant & ANT_A) ? "ANT_A," : "", - (il->hw_params.valid_tx_ant & ANT_B) ? "ANT_B," : "", - (il->hw_params.valid_tx_ant & ANT_C) ? "ANT_C" : ""); - desc += - sprintf(buff + desc, "lq type %s\n", - (is_legacy(tbl->lq_type)) ? "legacy" : "HT"); - if (is_Ht(tbl->lq_type)) { - desc += - sprintf(buff + desc, " %s", - (is_siso(tbl->lq_type)) ? "SISO" : "MIMO2"); - desc += - sprintf(buff + desc, " %s", - (tbl->is_ht40) ? "40MHz" : "20MHz"); - desc += - sprintf(buff + desc, " %s %s %s\n", - (tbl->is_SGI) ? "SGI" : "", - (lq_sta->is_green) ? "GF enabled" : "", - (lq_sta->is_agg) ? "AGG on" : ""); - } - desc += - sprintf(buff + desc, "last tx rate=0x%X\n", - lq_sta->last_rate_n_flags); - desc += - sprintf(buff + desc, - "general:" "flags=0x%X mimo-d=%d s-ant0x%x d-ant=0x%x\n", - lq_sta->lq.general_params.flags, - lq_sta->lq.general_params.mimo_delimiter, - lq_sta->lq.general_params.single_stream_ant_msk, - lq_sta->lq.general_params.dual_stream_ant_msk); - - desc += - sprintf(buff + desc, - "agg:" - "time_limit=%d dist_start_th=%d frame_cnt_limit=%d\n", - le16_to_cpu(lq_sta->lq.agg_params.agg_time_limit), - lq_sta->lq.agg_params.agg_dis_start_th, - lq_sta->lq.agg_params.agg_frame_cnt_limit); - - desc += - sprintf(buff + desc, - "Start idx [0]=0x%x [1]=0x%x [2]=0x%x [3]=0x%x\n", - lq_sta->lq.general_params.start_rate_idx[0], - lq_sta->lq.general_params.start_rate_idx[1], - lq_sta->lq.general_params.start_rate_idx[2], - lq_sta->lq.general_params.start_rate_idx[3]); - - for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { - idx = - il4965_hwrate_to_plcp_idx(le32_to_cpu - (lq_sta->lq.rs_table[i]. - rate_n_flags)); - if (is_legacy(tbl->lq_type)) { - desc += - sprintf(buff + desc, " rate[%d] 0x%X %smbps\n", i, - le32_to_cpu(lq_sta->lq.rs_table[i]. - rate_n_flags), - il_rate_mcs[idx].mbps); - } else { - desc += - sprintf(buff + desc, " rate[%d] 0x%X %smbps (%s)\n", - i, - le32_to_cpu(lq_sta->lq.rs_table[i]. - rate_n_flags), - il_rate_mcs[idx].mbps, - il_rate_mcs[idx].mcs); - } - } - - ret = simple_read_from_buffer(user_buf, count, ppos, buff, desc); - kfree(buff); - return ret; -} - -static const struct file_operations rs_sta_dbgfs_scale_table_ops = { - .write = il4965_rs_sta_dbgfs_scale_table_write, - .read = il4965_rs_sta_dbgfs_scale_table_read, - .open = simple_open, - .llseek = default_llseek, -}; - -static ssize_t -il4965_rs_sta_dbgfs_stats_table_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - char *buff; - int desc = 0; - int i, j; - ssize_t ret; - - struct il_lq_sta *lq_sta = file->private_data; - - buff = kmalloc(1024, GFP_KERNEL); - if (!buff) - return -ENOMEM; - - for (i = 0; i < LQ_SIZE; i++) { - desc += - sprintf(buff + desc, - "%s type=%d SGI=%d HT40=%d DUP=%d GF=%d\n" - "rate=0x%X\n", lq_sta->active_tbl == i ? "*" : "x", - lq_sta->lq_info[i].lq_type, - lq_sta->lq_info[i].is_SGI, - lq_sta->lq_info[i].is_ht40, - lq_sta->lq_info[i].is_dup, lq_sta->is_green, - lq_sta->lq_info[i].current_rate); - for (j = 0; j < RATE_COUNT; j++) { - desc += - sprintf(buff + desc, - "counter=%d success=%d %%=%d\n", - lq_sta->lq_info[i].win[j].counter, - lq_sta->lq_info[i].win[j].success_counter, - lq_sta->lq_info[i].win[j].success_ratio); - } - } - ret = simple_read_from_buffer(user_buf, count, ppos, buff, desc); - kfree(buff); - return ret; -} - -static const struct file_operations rs_sta_dbgfs_stats_table_ops = { - .read = il4965_rs_sta_dbgfs_stats_table_read, - .open = simple_open, - .llseek = default_llseek, -}; - -static ssize_t -il4965_rs_sta_dbgfs_rate_scale_data_read(struct file *file, - char __user *user_buf, size_t count, - loff_t *ppos) -{ - char buff[120]; - int desc = 0; - struct il_lq_sta *lq_sta = file->private_data; - struct il_scale_tbl_info *tbl = &lq_sta->lq_info[lq_sta->active_tbl]; - - if (is_Ht(tbl->lq_type)) - desc += - sprintf(buff + desc, "Bit Rate= %d Mb/s\n", - tbl->expected_tpt[lq_sta->last_txrate_idx]); - else - desc += - sprintf(buff + desc, "Bit Rate= %d Mb/s\n", - il_rates[lq_sta->last_txrate_idx].ieee >> 1); - - return simple_read_from_buffer(user_buf, count, ppos, buff, desc); -} - -static const struct file_operations rs_sta_dbgfs_rate_scale_data_ops = { - .read = il4965_rs_sta_dbgfs_rate_scale_data_read, - .open = simple_open, - .llseek = default_llseek, -}; - -static void -il4965_rs_add_debugfs(void *il, void *il_sta, struct dentry *dir) -{ - struct il_lq_sta *lq_sta = il_sta; - lq_sta->rs_sta_dbgfs_scale_table_file = - debugfs_create_file("rate_scale_table", S_IRUSR | S_IWUSR, dir, - lq_sta, &rs_sta_dbgfs_scale_table_ops); - lq_sta->rs_sta_dbgfs_stats_table_file = - debugfs_create_file("rate_stats_table", S_IRUSR, dir, lq_sta, - &rs_sta_dbgfs_stats_table_ops); - lq_sta->rs_sta_dbgfs_rate_scale_data_file = - debugfs_create_file("rate_scale_data", S_IRUSR, dir, lq_sta, - &rs_sta_dbgfs_rate_scale_data_ops); - lq_sta->rs_sta_dbgfs_tx_agg_tid_en_file = - debugfs_create_u8("tx_agg_tid_enable", S_IRUSR | S_IWUSR, dir, - &lq_sta->tx_agg_tid_en); - -} - -static void -il4965_rs_remove_debugfs(void *il, void *il_sta) -{ - struct il_lq_sta *lq_sta = il_sta; - debugfs_remove(lq_sta->rs_sta_dbgfs_scale_table_file); - debugfs_remove(lq_sta->rs_sta_dbgfs_stats_table_file); - debugfs_remove(lq_sta->rs_sta_dbgfs_rate_scale_data_file); - debugfs_remove(lq_sta->rs_sta_dbgfs_tx_agg_tid_en_file); -} -#endif - -/* - * Initialization of rate scaling information is done by driver after - * the station is added. Since mac80211 calls this function before a - * station is added we ignore it. - */ -static void -il4965_rs_rate_init_stub(void *il_r, struct ieee80211_supported_band *sband, - struct cfg80211_chan_def *chandef, - struct ieee80211_sta *sta, void *il_sta) -{ -} - -static const struct rate_control_ops rs_4965_ops = { - .name = IL4965_RS_NAME, - .tx_status = il4965_rs_tx_status, - .get_rate = il4965_rs_get_rate, - .rate_init = il4965_rs_rate_init_stub, - .alloc = il4965_rs_alloc, - .free = il4965_rs_free, - .alloc_sta = il4965_rs_alloc_sta, - .free_sta = il4965_rs_free_sta, -#ifdef CONFIG_MAC80211_DEBUGFS - .add_sta_debugfs = il4965_rs_add_debugfs, - .remove_sta_debugfs = il4965_rs_remove_debugfs, -#endif -}; - -int -il4965_rate_control_register(void) -{ - return ieee80211_rate_control_register(&rs_4965_ops); -} - -void -il4965_rate_control_unregister(void) -{ - ieee80211_rate_control_unregister(&rs_4965_ops); -} diff --git a/drivers/net/wireless/iwlegacy/4965.c b/drivers/net/wireless/iwlegacy/4965.c deleted file mode 100644 index fe47db9c20cd..000000000000 --- a/drivers/net/wireless/iwlegacy/4965.c +++ /dev/null @@ -1,1950 +0,0 @@ -/****************************************************************************** - * - * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA - * - * The full GNU General Public License is included in this distribution in the - * file called LICENSE. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - *****************************************************************************/ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/pci.h> -#include <linux/dma-mapping.h> -#include <linux/delay.h> -#include <linux/sched.h> -#include <linux/skbuff.h> -#include <linux/netdevice.h> -#include <net/mac80211.h> -#include <linux/etherdevice.h> -#include <asm/unaligned.h> - -#include "common.h" -#include "4965.h" - -/** - * il_verify_inst_sparse - verify runtime uCode image in card vs. host, - * using sample data 100 bytes apart. If these sample points are good, - * it's a pretty good bet that everything between them is good, too. - */ -static int -il4965_verify_inst_sparse(struct il_priv *il, __le32 * image, u32 len) -{ - u32 val; - int ret = 0; - u32 errcnt = 0; - u32 i; - - D_INFO("ucode inst image size is %u\n", len); - - for (i = 0; i < len; i += 100, image += 100 / sizeof(u32)) { - /* read data comes through single port, auto-incr addr */ - /* NOTE: Use the debugless read so we don't flood kernel log - * if IL_DL_IO is set */ - il_wr(il, HBUS_TARG_MEM_RADDR, i + IL4965_RTC_INST_LOWER_BOUND); - val = _il_rd(il, HBUS_TARG_MEM_RDAT); - if (val != le32_to_cpu(*image)) { - ret = -EIO; - errcnt++; - if (errcnt >= 3) - break; - } - } - - return ret; -} - -/** - * il4965_verify_inst_full - verify runtime uCode image in card vs. host, - * looking at all data. - */ -static int -il4965_verify_inst_full(struct il_priv *il, __le32 * image, u32 len) -{ - u32 val; - u32 save_len = len; - int ret = 0; - u32 errcnt; - - D_INFO("ucode inst image size is %u\n", len); - - il_wr(il, HBUS_TARG_MEM_RADDR, IL4965_RTC_INST_LOWER_BOUND); - - errcnt = 0; - for (; len > 0; len -= sizeof(u32), image++) { - /* read data comes through single port, auto-incr addr */ - /* NOTE: Use the debugless read so we don't flood kernel log - * if IL_DL_IO is set */ - val = _il_rd(il, HBUS_TARG_MEM_RDAT); - if (val != le32_to_cpu(*image)) { - IL_ERR("uCode INST section is invalid at " - "offset 0x%x, is 0x%x, s/b 0x%x\n", - save_len - len, val, le32_to_cpu(*image)); - ret = -EIO; - errcnt++; - if (errcnt >= 20) - break; - } - } - - if (!errcnt) - D_INFO("ucode image in INSTRUCTION memory is good\n"); - - return ret; -} - -/** - * il4965_verify_ucode - determine which instruction image is in SRAM, - * and verify its contents - */ -int -il4965_verify_ucode(struct il_priv *il) -{ - __le32 *image; - u32 len; - int ret; - - /* Try bootstrap */ - image = (__le32 *) il->ucode_boot.v_addr; - len = il->ucode_boot.len; - ret = il4965_verify_inst_sparse(il, image, len); - if (!ret) { - D_INFO("Bootstrap uCode is good in inst SRAM\n"); - return 0; - } - - /* Try initialize */ - image = (__le32 *) il->ucode_init.v_addr; - len = il->ucode_init.len; - ret = il4965_verify_inst_sparse(il, image, len); - if (!ret) { - D_INFO("Initialize uCode is good in inst SRAM\n"); - return 0; - } - - /* Try runtime/protocol */ - image = (__le32 *) il->ucode_code.v_addr; - len = il->ucode_code.len; - ret = il4965_verify_inst_sparse(il, image, len); - if (!ret) { - D_INFO("Runtime uCode is good in inst SRAM\n"); - return 0; - } - - IL_ERR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n"); - - /* Since nothing seems to match, show first several data entries in - * instruction SRAM, so maybe visual inspection will give a clue. - * Selection of bootstrap image (vs. other images) is arbitrary. */ - image = (__le32 *) il->ucode_boot.v_addr; - len = il->ucode_boot.len; - ret = il4965_verify_inst_full(il, image, len); - - return ret; -} - -/****************************************************************************** - * - * EEPROM related functions - * -******************************************************************************/ - -/* - * The device's EEPROM semaphore prevents conflicts between driver and uCode - * when accessing the EEPROM; each access is a series of pulses to/from the - * EEPROM chip, not a single event, so even reads could conflict if they - * weren't arbitrated by the semaphore. - */ -int -il4965_eeprom_acquire_semaphore(struct il_priv *il) -{ - u16 count; - int ret; - - for (count = 0; count < EEPROM_SEM_RETRY_LIMIT; count++) { - /* Request semaphore */ - il_set_bit(il, CSR_HW_IF_CONFIG_REG, - CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM); - - /* See if we got it */ - ret = - _il_poll_bit(il, CSR_HW_IF_CONFIG_REG, - CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM, - CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM, - EEPROM_SEM_TIMEOUT); - if (ret >= 0) - return ret; - } - - return ret; -} - -void -il4965_eeprom_release_semaphore(struct il_priv *il) -{ - il_clear_bit(il, CSR_HW_IF_CONFIG_REG, - CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM); - -} - -int -il4965_eeprom_check_version(struct il_priv *il) -{ - u16 eeprom_ver; - u16 calib_ver; - - eeprom_ver = il_eeprom_query16(il, EEPROM_VERSION); - calib_ver = il_eeprom_query16(il, EEPROM_4965_CALIB_VERSION_OFFSET); - - if (eeprom_ver < il->cfg->eeprom_ver || - calib_ver < il->cfg->eeprom_calib_ver) - goto err; - - IL_INFO("device EEPROM VER=0x%x, CALIB=0x%x\n", eeprom_ver, calib_ver); - - return 0; -err: - IL_ERR("Unsupported (too old) EEPROM VER=0x%x < 0x%x " - "CALIB=0x%x < 0x%x\n", eeprom_ver, il->cfg->eeprom_ver, - calib_ver, il->cfg->eeprom_calib_ver); - return -EINVAL; - -} - -void -il4965_eeprom_get_mac(const struct il_priv *il, u8 * mac) -{ - const u8 *addr = il_eeprom_query_addr(il, - EEPROM_MAC_ADDRESS); - memcpy(mac, addr, ETH_ALEN); -} - -/* Send led command */ -static int -il4965_send_led_cmd(struct il_priv *il, struct il_led_cmd *led_cmd) -{ - struct il_host_cmd cmd = { - .id = C_LEDS, - .len = sizeof(struct il_led_cmd), - .data = led_cmd, - .flags = CMD_ASYNC, - .callback = NULL, - }; - u32 reg; - - reg = _il_rd(il, CSR_LED_REG); - if (reg != (reg & CSR_LED_BSM_CTRL_MSK)) - _il_wr(il, CSR_LED_REG, reg & CSR_LED_BSM_CTRL_MSK); - - return il_send_cmd(il, &cmd); -} - -/* Set led register off */ -void -il4965_led_enable(struct il_priv *il) -{ - _il_wr(il, CSR_LED_REG, CSR_LED_REG_TRUN_ON); -} - -static int il4965_send_tx_power(struct il_priv *il); -static int il4965_hw_get_temperature(struct il_priv *il); - -/* Highest firmware API version supported */ -#define IL4965_UCODE_API_MAX 2 - -/* Lowest firmware API version supported */ -#define IL4965_UCODE_API_MIN 2 - -#define IL4965_FW_PRE "iwlwifi-4965-" -#define _IL4965_MODULE_FIRMWARE(api) IL4965_FW_PRE #api ".ucode" -#define IL4965_MODULE_FIRMWARE(api) _IL4965_MODULE_FIRMWARE(api) - -/* check contents of special bootstrap uCode SRAM */ -static int -il4965_verify_bsm(struct il_priv *il) -{ - __le32 *image = il->ucode_boot.v_addr; - u32 len = il->ucode_boot.len; - u32 reg; - u32 val; - - D_INFO("Begin verify bsm\n"); - - /* verify BSM SRAM contents */ - val = il_rd_prph(il, BSM_WR_DWCOUNT_REG); - for (reg = BSM_SRAM_LOWER_BOUND; reg < BSM_SRAM_LOWER_BOUND + len; - reg += sizeof(u32), image++) { - val = il_rd_prph(il, reg); - if (val != le32_to_cpu(*image)) { - IL_ERR("BSM uCode verification failed at " - "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n", - BSM_SRAM_LOWER_BOUND, reg - BSM_SRAM_LOWER_BOUND, - len, val, le32_to_cpu(*image)); - return -EIO; - } - } - - D_INFO("BSM bootstrap uCode image OK\n"); - - return 0; -} - -/** - * il4965_load_bsm - Load bootstrap instructions - * - * BSM operation: - * - * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program - * in special SRAM that does not power down during RFKILL. When powering back - * up after power-saving sleeps (or during initial uCode load), the BSM loads - * the bootstrap program into the on-board processor, and starts it. - * - * The bootstrap program loads (via DMA) instructions and data for a new - * program from host DRAM locations indicated by the host driver in the - * BSM_DRAM_* registers. Once the new program is loaded, it starts - * automatically. - * - * When initializing the NIC, the host driver points the BSM to the - * "initialize" uCode image. This uCode sets up some internal data, then - * notifies host via "initialize alive" that it is complete. - * - * The host then replaces the BSM_DRAM_* pointer values to point to the - * normal runtime uCode instructions and a backup uCode data cache buffer - * (filled initially with starting data values for the on-board processor), - * then triggers the "initialize" uCode to load and launch the runtime uCode, - * which begins normal operation. - * - * When doing a power-save shutdown, runtime uCode saves data SRAM into - * the backup data cache in DRAM before SRAM is powered down. - * - * When powering back up, the BSM loads the bootstrap program. This reloads - * the runtime uCode instructions and the backup data cache into SRAM, - * and re-launches the runtime uCode from where it left off. - */ -static int -il4965_load_bsm(struct il_priv *il) -{ - __le32 *image = il->ucode_boot.v_addr; - u32 len = il->ucode_boot.len; - dma_addr_t pinst; - dma_addr_t pdata; - u32 inst_len; - u32 data_len; - int i; - u32 done; - u32 reg_offset; - int ret; - - D_INFO("Begin load bsm\n"); - - il->ucode_type = UCODE_RT; - - /* make sure bootstrap program is no larger than BSM's SRAM size */ - if (len > IL49_MAX_BSM_SIZE) - return -EINVAL; - - /* Tell bootstrap uCode where to find the "Initialize" uCode - * in host DRAM ... host DRAM physical address bits 35:4 for 4965. - * NOTE: il_init_alive_start() will replace these values, - * after the "initialize" uCode has run, to point to - * runtime/protocol instructions and backup data cache. - */ - pinst = il->ucode_init.p_addr >> 4; - pdata = il->ucode_init_data.p_addr >> 4; - inst_len = il->ucode_init.len; - data_len = il->ucode_init_data.len; - - il_wr_prph(il, BSM_DRAM_INST_PTR_REG, pinst); - il_wr_prph(il, BSM_DRAM_DATA_PTR_REG, pdata); - il_wr_prph(il, BSM_DRAM_INST_BYTECOUNT_REG, inst_len); - il_wr_prph(il, BSM_DRAM_DATA_BYTECOUNT_REG, data_len); - - /* Fill BSM memory with bootstrap instructions */ - for (reg_offset = BSM_SRAM_LOWER_BOUND; - reg_offset < BSM_SRAM_LOWER_BOUND + len; - reg_offset += sizeof(u32), image++) - _il_wr_prph(il, reg_offset, le32_to_cpu(*image)); - - ret = il4965_verify_bsm(il); - if (ret) - return ret; - - /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */ - il_wr_prph(il, BSM_WR_MEM_SRC_REG, 0x0); - il_wr_prph(il, BSM_WR_MEM_DST_REG, IL49_RTC_INST_LOWER_BOUND); - il_wr_prph(il, BSM_WR_DWCOUNT_REG, len / sizeof(u32)); - - /* Load bootstrap code into instruction SRAM now, - * to prepare to load "initialize" uCode */ - il_wr_prph(il, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START); - - /* Wait for load of bootstrap uCode to finish */ - for (i = 0; i < 100; i++) { - done = il_rd_prph(il, BSM_WR_CTRL_REG); - if (!(done & BSM_WR_CTRL_REG_BIT_START)) - break; - udelay(10); - } - if (i < 100) - D_INFO("BSM write complete, poll %d iterations\n", i); - else { - IL_ERR("BSM write did not complete!\n"); - return -EIO; - } - - /* Enable future boot loads whenever power management unit triggers it - * (e.g. when powering back up after power-save shutdown) */ - il_wr_prph(il, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START_EN); - - return 0; -} - -/** - * il4965_set_ucode_ptrs - Set uCode address location - * - * Tell initialization uCode where to find runtime uCode. - * - * BSM registers initially contain pointers to initialization uCode. - * We need to replace them to load runtime uCode inst and data, - * and to save runtime data when powering down. - */ -static int -il4965_set_ucode_ptrs(struct il_priv *il) -{ - dma_addr_t pinst; - dma_addr_t pdata; - int ret = 0; - - /* bits 35:4 for 4965 */ - pinst = il->ucode_code.p_addr >> 4; - pdata = il->ucode_data_backup.p_addr >> 4; - - /* Tell bootstrap uCode where to find image to load */ - il_wr_prph(il, BSM_DRAM_INST_PTR_REG, pinst); - il_wr_prph(il, BSM_DRAM_DATA_PTR_REG, pdata); - il_wr_prph(il, BSM_DRAM_DATA_BYTECOUNT_REG, il->ucode_data.len); - - /* Inst byte count must be last to set up, bit 31 signals uCode - * that all new ptr/size info is in place */ - il_wr_prph(il, BSM_DRAM_INST_BYTECOUNT_REG, - il->ucode_code.len | BSM_DRAM_INST_LOAD); - D_INFO("Runtime uCode pointers are set.\n"); - - return ret; -} - -/** - * il4965_init_alive_start - Called after N_ALIVE notification received - * - * Called after N_ALIVE notification received from "initialize" uCode. - * - * The 4965 "initialize" ALIVE reply contains calibration data for: - * Voltage, temperature, and MIMO tx gain correction, now stored in il - * (3945 does not contain this data). - * - * Tell "initialize" uCode to go ahead and load the runtime uCode. -*/ -static void -il4965_init_alive_start(struct il_priv *il) -{ - /* Bootstrap uCode has loaded initialize uCode ... verify inst image. - * This is a paranoid check, because we would not have gotten the - * "initialize" alive if code weren't properly loaded. */ - if (il4965_verify_ucode(il)) { - /* Runtime instruction load was bad; - * take it all the way back down so we can try again */ - D_INFO("Bad \"initialize\" uCode load.\n"); - goto restart; - } - - /* Calculate temperature */ - il->temperature = il4965_hw_get_temperature(il); - - /* Send pointers to protocol/runtime uCode image ... init code will - * load and launch runtime uCode, which will send us another "Alive" - * notification. */ - D_INFO("Initialization Alive received.\n"); - if (il4965_set_ucode_ptrs(il)) { - /* Runtime instruction load won't happen; - * take it all the way back down so we can try again */ - D_INFO("Couldn't set up uCode pointers.\n"); - goto restart; - } - return; - -restart: - queue_work(il->workqueue, &il->restart); -} - -static bool -iw4965_is_ht40_channel(__le32 rxon_flags) -{ - int chan_mod = - le32_to_cpu(rxon_flags & RXON_FLG_CHANNEL_MODE_MSK) >> - RXON_FLG_CHANNEL_MODE_POS; - return (chan_mod == CHANNEL_MODE_PURE_40 || - chan_mod == CHANNEL_MODE_MIXED); -} - -void -il4965_nic_config(struct il_priv *il) -{ - unsigned long flags; - u16 radio_cfg; - - spin_lock_irqsave(&il->lock, flags); - - radio_cfg = il_eeprom_query16(il, EEPROM_RADIO_CONFIG); - - /* write radio config values to register */ - if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) == EEPROM_4965_RF_CFG_TYPE_MAX) - il_set_bit(il, CSR_HW_IF_CONFIG_REG, - EEPROM_RF_CFG_TYPE_MSK(radio_cfg) | - EEPROM_RF_CFG_STEP_MSK(radio_cfg) | - EEPROM_RF_CFG_DASH_MSK(radio_cfg)); - - /* set CSR_HW_CONFIG_REG for uCode use */ - il_set_bit(il, CSR_HW_IF_CONFIG_REG, - CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | - CSR_HW_IF_CONFIG_REG_BIT_MAC_SI); - - il->calib_info = - (struct il_eeprom_calib_info *) - il_eeprom_query_addr(il, EEPROM_4965_CALIB_TXPOWER_OFFSET); - - spin_unlock_irqrestore(&il->lock, flags); -} - -/* Reset differential Rx gains in NIC to prepare for chain noise calibration. - * Called after every association, but this runs only once! - * ... once chain noise is calibrated the first time, it's good forever. */ -static void -il4965_chain_noise_reset(struct il_priv *il) -{ - struct il_chain_noise_data *data = &(il->chain_noise_data); - - if (data->state == IL_CHAIN_NOISE_ALIVE && il_is_any_associated(il)) { - struct il_calib_diff_gain_cmd cmd; - - /* clear data for chain noise calibration algorithm */ - data->chain_noise_a = 0; - data->chain_noise_b = 0; - data->chain_noise_c = 0; - data->chain_signal_a = 0; - data->chain_signal_b = 0; - data->chain_signal_c = 0; - data->beacon_count = 0; - - memset(&cmd, 0, sizeof(cmd)); - cmd.hdr.op_code = IL_PHY_CALIBRATE_DIFF_GAIN_CMD; - cmd.diff_gain_a = 0; - cmd.diff_gain_b = 0; - cmd.diff_gain_c = 0; - if (il_send_cmd_pdu(il, C_PHY_CALIBRATION, sizeof(cmd), &cmd)) - IL_ERR("Could not send C_PHY_CALIBRATION\n"); - data->state = IL_CHAIN_NOISE_ACCUMULATE; - D_CALIB("Run chain_noise_calibrate\n"); - } -} - -static s32 -il4965_math_div_round(s32 num, s32 denom, s32 * res) -{ - s32 sign = 1; - - if (num < 0) { - sign = -sign; - num = -num; - } - if (denom < 0) { - sign = -sign; - denom = -denom; - } - *res = 1; - *res = ((num * 2 + denom) / (denom * 2)) * sign; - - return 1; -} - -/** - * il4965_get_voltage_compensation - Power supply voltage comp for txpower - * - * Determines power supply voltage compensation for txpower calculations. - * Returns number of 1/2-dB steps to subtract from gain table idx, - * to compensate for difference between power supply voltage during - * factory measurements, vs. current power supply voltage. - * - * Voltage indication is higher for lower voltage. - * Lower voltage requires more gain (lower gain table idx). - */ -static s32 -il4965_get_voltage_compensation(s32 eeprom_voltage, s32 current_voltage) -{ - s32 comp = 0; - - if (TX_POWER_IL_ILLEGAL_VOLTAGE == eeprom_voltage || - TX_POWER_IL_ILLEGAL_VOLTAGE == current_voltage) - return 0; - - il4965_math_div_round(current_voltage - eeprom_voltage, - TX_POWER_IL_VOLTAGE_CODES_PER_03V, &comp); - - if (current_voltage > eeprom_voltage) - comp *= 2; - if ((comp < -2) || (comp > 2)) - comp = 0; - - return comp; -} - -static s32 -il4965_get_tx_atten_grp(u16 channel) -{ - if (channel >= CALIB_IL_TX_ATTEN_GR5_FCH && - channel <= CALIB_IL_TX_ATTEN_GR5_LCH) - return CALIB_CH_GROUP_5; - - if (channel >= CALIB_IL_TX_ATTEN_GR1_FCH && - channel <= CALIB_IL_TX_ATTEN_GR1_LCH) - return CALIB_CH_GROUP_1; - - if (channel >= CALIB_IL_TX_ATTEN_GR2_FCH && - channel <= CALIB_IL_TX_ATTEN_GR2_LCH) - return CALIB_CH_GROUP_2; - - if (channel >= CALIB_IL_TX_ATTEN_GR3_FCH && - channel <= CALIB_IL_TX_ATTEN_GR3_LCH) - return CALIB_CH_GROUP_3; - - if (channel >= CALIB_IL_TX_ATTEN_GR4_FCH && - channel <= CALIB_IL_TX_ATTEN_GR4_LCH) - return CALIB_CH_GROUP_4; - - return -EINVAL; -} - -static u32 -il4965_get_sub_band(const struct il_priv *il, u32 channel) -{ - s32 b = -1; - - for (b = 0; b < EEPROM_TX_POWER_BANDS; b++) { - if (il->calib_info->band_info[b].ch_from == 0) - continue; - - if (channel >= il->calib_info->band_info[b].ch_from && - channel <= il->calib_info->band_info[b].ch_to) - break; - } - - return b; -} - -static s32 -il4965_interpolate_value(s32 x, s32 x1, s32 y1, s32 x2, s32 y2) -{ - s32 val; - - if (x2 == x1) - return y1; - else { - il4965_math_div_round((x2 - x) * (y1 - y2), (x2 - x1), &val); - return val + y2; - } -} - -/** - * il4965_interpolate_chan - Interpolate factory measurements for one channel - * - * Interpolates factory measurements from the two sample channels within a - * sub-band, to apply to channel of interest. Interpolation is proportional to - * differences in channel frequencies, which is proportional to differences - * in channel number. - */ -static int -il4965_interpolate_chan(struct il_priv *il, u32 channel, - struct il_eeprom_calib_ch_info *chan_info) -{ - s32 s = -1; - u32 c; - u32 m; - const struct il_eeprom_calib_measure *m1; - const struct il_eeprom_calib_measure *m2; - struct il_eeprom_calib_measure *omeas; - u32 ch_i1; - u32 ch_i2; - - s = il4965_get_sub_band(il, channel); - if (s >= EEPROM_TX_POWER_BANDS) { - IL_ERR("Tx Power can not find channel %d\n", channel); - return -1; - } - - ch_i1 = il->calib_info->band_info[s].ch1.ch_num; - ch_i2 = il->calib_info->band_info[s].ch2.ch_num; - chan_info->ch_num = (u8) channel; - - D_TXPOWER("channel %d subband %d factory cal ch %d & %d\n", channel, s, - ch_i1, ch_i2); - - for (c = 0; c < EEPROM_TX_POWER_TX_CHAINS; c++) { - for (m = 0; m < EEPROM_TX_POWER_MEASUREMENTS; m++) { - m1 = &(il->calib_info->band_info[s].ch1. - measurements[c][m]); - m2 = &(il->calib_info->band_info[s].ch2. - measurements[c][m]); - omeas = &(chan_info->measurements[c][m]); - - omeas->actual_pow = - (u8) il4965_interpolate_value(channel, ch_i1, - m1->actual_pow, ch_i2, - m2->actual_pow); - omeas->gain_idx = - (u8) il4965_interpolate_value(channel, ch_i1, - m1->gain_idx, ch_i2, - m2->gain_idx); - omeas->temperature = - (u8) il4965_interpolate_value(channel, ch_i1, - m1->temperature, - ch_i2, - m2->temperature); - omeas->pa_det = - (s8) il4965_interpolate_value(channel, ch_i1, - m1->pa_det, ch_i2, - m2->pa_det); - - D_TXPOWER("chain %d meas %d AP1=%d AP2=%d AP=%d\n", c, - m, m1->actual_pow, m2->actual_pow, - omeas->actual_pow); - D_TXPOWER("chain %d meas %d NI1=%d NI2=%d NI=%d\n", c, - m, m1->gain_idx, m2->gain_idx, - omeas->gain_idx); - D_TXPOWER("chain %d meas %d PA1=%d PA2=%d PA=%d\n", c, - m, m1->pa_det, m2->pa_det, omeas->pa_det); - D_TXPOWER("chain %d meas %d T1=%d T2=%d T=%d\n", c, - m, m1->temperature, m2->temperature, - omeas->temperature); - } - } - - return 0; -} - -/* bit-rate-dependent table to prevent Tx distortion, in half-dB units, - * for OFDM 6, 12, 18, 24, 36, 48, 54, 60 MBit, and CCK all rates. */ -static s32 back_off_table[] = { - 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 20 MHz */ - 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 20 MHz */ - 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 40 MHz */ - 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 40 MHz */ - 10 /* CCK */ -}; - -/* Thermal compensation values for txpower for various frequency ranges ... - * ratios from 3:1 to 4.5:1 of degrees (Celsius) per half-dB gain adjust */ -static struct il4965_txpower_comp_entry { - s32 degrees_per_05db_a; - s32 degrees_per_05db_a_denom; -} tx_power_cmp_tble[CALIB_CH_GROUP_MAX] = { - { - 9, 2}, /* group 0 5.2, ch 34-43 */ - { - 4, 1}, /* group 1 5.2, ch 44-70 */ - { - 4, 1}, /* group 2 5.2, ch 71-124 */ - { - 4, 1}, /* group 3 5.2, ch 125-200 */ - { - 3, 1} /* group 4 2.4, ch all */ -}; - -static s32 -get_min_power_idx(s32 rate_power_idx, u32 band) -{ - if (!band) { - if ((rate_power_idx & 7) <= 4) - return MIN_TX_GAIN_IDX_52GHZ_EXT; - } - return MIN_TX_GAIN_IDX; -} - -struct gain_entry { - u8 dsp; - u8 radio; -}; - -static const struct gain_entry gain_table[2][108] = { - /* 5.2GHz power gain idx table */ - { - {123, 0x3F}, /* highest txpower */ - {117, 0x3F}, - {110, 0x3F}, - {104, 0x3F}, - {98, 0x3F}, - {110, 0x3E}, - {104, 0x3E}, - {98, 0x3E}, - {110, 0x3D}, - {104, 0x3D}, - {98, 0x3D}, - {110, 0x3C}, - {104, 0x3C}, - {98, 0x3C}, - {110, 0x3B}, - {104, 0x3B}, - {98, 0x3B}, - {110, 0x3A}, - {104, 0x3A}, - {98, 0x3A}, - {110, 0x39}, - {104, 0x39}, - {98, 0x39}, - {110, 0x38}, - {104, 0x38}, - {98, 0x38}, - {110, 0x37}, - {104, 0x37}, - {98, 0x37}, - {110, 0x36}, - {104, 0x36}, - {98, 0x36}, - {110, 0x35}, - {104, 0x35}, - {98, 0x35}, - {110, 0x34}, - {104, 0x34}, - {98, 0x34}, - {110, 0x33}, - {104, 0x33}, - {98, 0x33}, - {110, 0x32}, - {104, 0x32}, - {98, 0x32}, - {110, 0x31}, - {104, 0x31}, - {98, 0x31}, - {110, 0x30}, - {104, 0x30}, - {98, 0x30}, - {110, 0x25}, - {104, 0x25}, - {98, 0x25}, - {110, 0x24}, - {104, 0x24}, - {98, 0x24}, - {110, 0x23}, - {104, 0x23}, - {98, 0x23}, - {110, 0x22}, - {104, 0x18}, - {98, 0x18}, - {110, 0x17}, - {104, 0x17}, - {98, 0x17}, - {110, 0x16}, - {104, 0x16}, - {98, 0x16}, - {110, 0x15}, - {104, 0x15}, - {98, 0x15}, - {110, 0x14}, - {104, 0x14}, - {98, 0x14}, - {110, 0x13}, - {104, 0x13}, - {98, 0x13}, - {110, 0x12}, - {104, 0x08}, - {98, 0x08}, - {110, 0x07}, - {104, 0x07}, - {98, 0x07}, - {110, 0x06}, - {104, 0x06}, - {98, 0x06}, - {110, 0x05}, - {104, 0x05}, - {98, 0x05}, - {110, 0x04}, - {104, 0x04}, - {98, 0x04}, - {110, 0x03}, - {104, 0x03}, - {98, 0x03}, - {110, 0x02}, - {104, 0x02}, - {98, 0x02}, - {110, 0x01}, - {104, 0x01}, - {98, 0x01}, - {110, 0x00}, - {104, 0x00}, - {98, 0x00}, - {93, 0x00}, - {88, 0x00}, - {83, 0x00}, - {78, 0x00}, - }, - /* 2.4GHz power gain idx table */ - { - {110, 0x3f}, /* highest txpower */ - {104, 0x3f}, - {98, 0x3f}, - {110, 0x3e}, - {104, 0x3e}, - {98, 0x3e}, - {110, 0x3d}, - {104, 0x3d}, - {98, 0x3d}, - {110, 0x3c}, - {104, 0x3c}, - {98, 0x3c}, - {110, 0x3b}, - {104, 0x3b}, - {98, 0x3b}, - {110, 0x3a}, - {104, 0x3a}, - {98, 0x3a}, - {110, 0x39}, - {104, 0x39}, - {98, 0x39}, - {110, 0x38}, - {104, 0x38}, - {98, 0x38}, - {110, 0x37}, - {104, 0x37}, - {98, 0x37}, - {110, 0x36}, - {104, 0x36}, - {98, 0x36}, - {110, 0x35}, - {104, 0x35}, - {98, 0x35}, - {110, 0x34}, - {104, 0x34}, - {98, 0x34}, - {110, 0x33}, - {104, 0x33}, - {98, 0x33}, - {110, 0x32}, - {104, 0x32}, - {98, 0x32}, - {110, 0x31}, - {104, 0x31}, - {98, 0x31}, - {110, 0x30}, - {104, 0x30}, - {98, 0x30}, - {110, 0x6}, - {104, 0x6}, - {98, 0x6}, - {110, 0x5}, - {104, 0x5}, - {98, 0x5}, - {110, 0x4}, - {104, 0x4}, - {98, 0x4}, - {110, 0x3}, - {104, 0x3}, - {98, 0x3}, - {110, 0x2}, - {104, 0x2}, - {98, 0x2}, - {110, 0x1}, - {104, 0x1}, - {98, 0x1}, - {110, 0x0}, - {104, 0x0}, - {98, 0x0}, - {97, 0}, - {96, 0}, - {95, 0}, - {94, 0}, - {93, 0}, - {92, 0}, - {91, 0}, - {90, 0}, - {89, 0}, - {88, 0}, - {87, 0}, - {86, 0}, - {85, 0}, - {84, 0}, - {83, 0}, - {82, 0}, - {81, 0}, - {80, 0}, - {79, 0}, - {78, 0}, - {77, 0}, - {76, 0}, - {75, 0}, - {74, 0}, - {73, 0}, - {72, 0}, - {71, 0}, - {70, 0}, - {69, 0}, - {68, 0}, - {67, 0}, - {66, 0}, - {65, 0}, - {64, 0}, - {63, 0}, - {62, 0}, - {61, 0}, - {60, 0}, - {59, 0}, - } -}; - -static int -il4965_fill_txpower_tbl(struct il_priv *il, u8 band, u16 channel, u8 is_ht40, - u8 ctrl_chan_high, - struct il4965_tx_power_db *tx_power_tbl) -{ - u8 saturation_power; - s32 target_power; - s32 user_target_power; - s32 power_limit; - s32 current_temp; - s32 reg_limit; - s32 current_regulatory; - s32 txatten_grp = CALIB_CH_GROUP_MAX; - int i; - int c; - const struct il_channel_info *ch_info = NULL; - struct il_eeprom_calib_ch_info ch_eeprom_info; - const struct il_eeprom_calib_measure *measurement; - s16 voltage; - s32 init_voltage; - s32 voltage_compensation; - s32 degrees_per_05db_num; - s32 degrees_per_05db_denom; - s32 factory_temp; - s32 temperature_comp[2]; - s32 factory_gain_idx[2]; - s32 factory_actual_pwr[2]; - s32 power_idx; - - /* tx_power_user_lmt is in dBm, convert to half-dBm (half-dB units - * are used for idxing into txpower table) */ - user_target_power = 2 * il->tx_power_user_lmt; - - /* Get current (RXON) channel, band, width */ - D_TXPOWER("chan %d band %d is_ht40 %d\n", channel, band, is_ht40); - - ch_info = il_get_channel_info(il, il->band, channel); - - if (!il_is_channel_valid(ch_info)) - return -EINVAL; - - /* get txatten group, used to select 1) thermal txpower adjustment - * and 2) mimo txpower balance between Tx chains. */ - txatten_grp = il4965_get_tx_atten_grp(channel); - if (txatten_grp < 0) { - IL_ERR("Can't find txatten group for channel %d.\n", channel); - return txatten_grp; - } - - D_TXPOWER("channel %d belongs to txatten group %d\n", channel, - txatten_grp); - - if (is_ht40) { - if (ctrl_chan_high) - channel -= 2; - else - channel += 2; - } - - /* hardware txpower limits ... - * saturation (clipping distortion) txpowers are in half-dBm */ - if (band) - saturation_power = il->calib_info->saturation_power24; - else - saturation_power = il->calib_info->saturation_power52; - - if (saturation_power < IL_TX_POWER_SATURATION_MIN || - saturation_power > IL_TX_POWER_SATURATION_MAX) { - if (band) - saturation_power = IL_TX_POWER_DEFAULT_SATURATION_24; - else - saturation_power = IL_TX_POWER_DEFAULT_SATURATION_52; - } - - /* regulatory txpower limits ... reg_limit values are in half-dBm, - * max_power_avg values are in dBm, convert * 2 */ - if (is_ht40) - reg_limit = ch_info->ht40_max_power_avg * 2; - else - reg_limit = ch_info->max_power_avg * 2; - - if ((reg_limit < IL_TX_POWER_REGULATORY_MIN) || - (reg_limit > IL_TX_POWER_REGULATORY_MAX)) { - if (band) - reg_limit = IL_TX_POWER_DEFAULT_REGULATORY_24; - else - reg_limit = IL_TX_POWER_DEFAULT_REGULATORY_52; - } - - /* Interpolate txpower calibration values for this channel, - * based on factory calibration tests on spaced channels. */ - il4965_interpolate_chan(il, channel, &ch_eeprom_info); - - /* calculate tx gain adjustment based on power supply voltage */ - voltage = le16_to_cpu(il->calib_info->voltage); - init_voltage = (s32) le32_to_cpu(il->card_alive_init.voltage); - voltage_compensation = - il4965_get_voltage_compensation(voltage, init_voltage); - - D_TXPOWER("curr volt %d eeprom volt %d volt comp %d\n", init_voltage, - voltage, voltage_compensation); - - /* get current temperature (Celsius) */ - current_temp = max(il->temperature, IL_TX_POWER_TEMPERATURE_MIN); - current_temp = min(il->temperature, IL_TX_POWER_TEMPERATURE_MAX); - current_temp = KELVIN_TO_CELSIUS(current_temp); - - /* select thermal txpower adjustment params, based on channel group - * (same frequency group used for mimo txatten adjustment) */ - degrees_per_05db_num = - tx_power_cmp_tble[txatten_grp].degrees_per_05db_a; - degrees_per_05db_denom = - tx_power_cmp_tble[txatten_grp].degrees_per_05db_a_denom; - - /* get per-chain txpower values from factory measurements */ - for (c = 0; c < 2; c++) { - measurement = &ch_eeprom_info.measurements[c][1]; - - /* txgain adjustment (in half-dB steps) based on difference - * between factory and current temperature */ - factory_temp = measurement->temperature; - il4965_math_div_round((current_temp - - factory_temp) * degrees_per_05db_denom, - degrees_per_05db_num, - &temperature_comp[c]); - - factory_gain_idx[c] = measurement->gain_idx; - factory_actual_pwr[c] = measurement->actual_pow; - - D_TXPOWER("chain = %d\n", c); - D_TXPOWER("fctry tmp %d, " "curr tmp %d, comp %d steps\n", - factory_temp, current_temp, temperature_comp[c]); - - D_TXPOWER("fctry idx %d, fctry pwr %d\n", factory_gain_idx[c], - factory_actual_pwr[c]); - } - - /* for each of 33 bit-rates (including 1 for CCK) */ - for (i = 0; i < POWER_TBL_NUM_ENTRIES; i++) { - u8 is_mimo_rate; - union il4965_tx_power_dual_stream tx_power; - - /* for mimo, reduce each chain's txpower by half - * (3dB, 6 steps), so total output power is regulatory - * compliant. */ - if (i & 0x8) { - current_regulatory = - reg_limit - - IL_TX_POWER_MIMO_REGULATORY_COMPENSATION; - is_mimo_rate = 1; - } else { - current_regulatory = reg_limit; - is_mimo_rate = 0; - } - - /* find txpower limit, either hardware or regulatory */ - power_limit = saturation_power - back_off_table[i]; - if (power_limit > current_regulatory) - power_limit = current_regulatory; - - /* reduce user's txpower request if necessary - * for this rate on this channel */ - target_power = user_target_power; - if (target_power > power_limit) - target_power = power_limit; - - D_TXPOWER("rate %d sat %d reg %d usr %d tgt %d\n", i, - saturation_power - back_off_table[i], - current_regulatory, user_target_power, target_power); - - /* for each of 2 Tx chains (radio transmitters) */ - for (c = 0; c < 2; c++) { - s32 atten_value; - - if (is_mimo_rate) - atten_value = - (s32) le32_to_cpu(il->card_alive_init. - tx_atten[txatten_grp][c]); - else - atten_value = 0; - - /* calculate idx; higher idx means lower txpower */ - power_idx = - (u8) (factory_gain_idx[c] - - (target_power - factory_actual_pwr[c]) - - temperature_comp[c] - voltage_compensation + - atten_value); - -/* D_TXPOWER("calculated txpower idx %d\n", - power_idx); */ - - if (power_idx < get_min_power_idx(i, band)) - power_idx = get_min_power_idx(i, band); - - /* adjust 5 GHz idx to support negative idxes */ - if (!band) - power_idx += 9; - - /* CCK, rate 32, reduce txpower for CCK */ - if (i == POWER_TBL_CCK_ENTRY) - power_idx += - IL_TX_POWER_CCK_COMPENSATION_C_STEP; - - /* stay within the table! */ - if (power_idx > 107) { - IL_WARN("txpower idx %d > 107\n", power_idx); - power_idx = 107; - } - if (power_idx < 0) { - IL_WARN("txpower idx %d < 0\n", power_idx); - power_idx = 0; - } - - /* fill txpower command for this rate/chain */ - tx_power.s.radio_tx_gain[c] = - gain_table[band][power_idx].radio; - tx_power.s.dsp_predis_atten[c] = - gain_table[band][power_idx].dsp; - - D_TXPOWER("chain %d mimo %d idx %d " - "gain 0x%02x dsp %d\n", c, atten_value, - power_idx, tx_power.s.radio_tx_gain[c], - tx_power.s.dsp_predis_atten[c]); - } /* for each chain */ - - tx_power_tbl->power_tbl[i].dw = cpu_to_le32(tx_power.dw); - - } /* for each rate */ - - return 0; -} - -/** - * il4965_send_tx_power - Configure the TXPOWER level user limit - * - * Uses the active RXON for channel, band, and characteristics (ht40, high) - * The power limit is taken from il->tx_power_user_lmt. - */ -static int -il4965_send_tx_power(struct il_priv *il) -{ - struct il4965_txpowertable_cmd cmd = { 0 }; - int ret; - u8 band = 0; - bool is_ht40 = false; - u8 ctrl_chan_high = 0; - - if (WARN_ONCE - (test_bit(S_SCAN_HW, &il->status), - "TX Power requested while scanning!\n")) - return -EAGAIN; - - band = il->band == IEEE80211_BAND_2GHZ; - - is_ht40 = iw4965_is_ht40_channel(il->active.flags); - - if (is_ht40 && (il->active.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK)) - ctrl_chan_high = 1; - - cmd.band = band; - cmd.channel = il->active.channel; - - ret = - il4965_fill_txpower_tbl(il, band, le16_to_cpu(il->active.channel), - is_ht40, ctrl_chan_high, &cmd.tx_power); - if (ret) - goto out; - - ret = il_send_cmd_pdu(il, C_TX_PWR_TBL, sizeof(cmd), &cmd); - -out: - return ret; -} - -static int -il4965_send_rxon_assoc(struct il_priv *il) -{ - int ret = 0; - struct il4965_rxon_assoc_cmd rxon_assoc; - const struct il_rxon_cmd *rxon1 = &il->staging; - const struct il_rxon_cmd *rxon2 = &il->active; - - if (rxon1->flags == rxon2->flags && - rxon1->filter_flags == rxon2->filter_flags && - rxon1->cck_basic_rates == rxon2->cck_basic_rates && - rxon1->ofdm_ht_single_stream_basic_rates == - rxon2->ofdm_ht_single_stream_basic_rates && - rxon1->ofdm_ht_dual_stream_basic_rates == - rxon2->ofdm_ht_dual_stream_basic_rates && - rxon1->rx_chain == rxon2->rx_chain && - rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates) { - D_INFO("Using current RXON_ASSOC. Not resending.\n"); - return 0; - } - - rxon_assoc.flags = il->staging.flags; - rxon_assoc.filter_flags = il->staging.filter_flags; - rxon_assoc.ofdm_basic_rates = il->staging.ofdm_basic_rates; - rxon_assoc.cck_basic_rates = il->staging.cck_basic_rates; - rxon_assoc.reserved = 0; - rxon_assoc.ofdm_ht_single_stream_basic_rates = - il->staging.ofdm_ht_single_stream_basic_rates; - rxon_assoc.ofdm_ht_dual_stream_basic_rates = - il->staging.ofdm_ht_dual_stream_basic_rates; - rxon_assoc.rx_chain_select_flags = il->staging.rx_chain; - - ret = - il_send_cmd_pdu_async(il, C_RXON_ASSOC, sizeof(rxon_assoc), - &rxon_assoc, NULL); - - return ret; -} - -static int -il4965_commit_rxon(struct il_priv *il) -{ - /* cast away the const for active_rxon in this function */ - struct il_rxon_cmd *active_rxon = (void *)&il->active; - int ret; - bool new_assoc = !!(il->staging.filter_flags & RXON_FILTER_ASSOC_MSK); - - if (!il_is_alive(il)) - return -EBUSY; - - /* always get timestamp with Rx frame */ - il->staging.flags |= RXON_FLG_TSF2HOST_MSK; - - ret = il_check_rxon_cmd(il); - if (ret) { - IL_ERR("Invalid RXON configuration. Not committing.\n"); - return -EINVAL; - } - - /* - * receive commit_rxon request - * abort any previous channel switch if still in process - */ - if (test_bit(S_CHANNEL_SWITCH_PENDING, &il->status) && - il->switch_channel != il->staging.channel) { - D_11H("abort channel switch on %d\n", - le16_to_cpu(il->switch_channel)); - il_chswitch_done(il, false); - } - - /* If we don't need to send a full RXON, we can use - * il_rxon_assoc_cmd which is used to reconfigure filter - * and other flags for the current radio configuration. */ - if (!il_full_rxon_required(il)) { - ret = il_send_rxon_assoc(il); - if (ret) { - IL_ERR("Error setting RXON_ASSOC (%d)\n", ret); - return ret; - } - - memcpy(active_rxon, &il->staging, sizeof(*active_rxon)); - il_print_rx_config_cmd(il); - /* - * We do not commit tx power settings while channel changing, - * do it now if tx power changed. - */ - il_set_tx_power(il, il->tx_power_next, false); - return 0; - } - - /* If we are currently associated and the new config requires - * an RXON_ASSOC and the new config wants the associated mask enabled, - * we must clear the associated from the active configuration - * before we apply the new config */ - if (il_is_associated(il) && new_assoc) { - D_INFO("Toggling associated bit on current RXON\n"); - active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; - - ret = - il_send_cmd_pdu(il, C_RXON, - sizeof(struct il_rxon_cmd), active_rxon); - - /* If the mask clearing failed then we set - * active_rxon back to what it was previously */ - if (ret) { - active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK; - IL_ERR("Error clearing ASSOC_MSK (%d)\n", ret); - return ret; - } - il_clear_ucode_stations(il); - il_restore_stations(il); - ret = il4965_restore_default_wep_keys(il); - if (ret) { - IL_ERR("Failed to restore WEP keys (%d)\n", ret); - return ret; - } - } - - D_INFO("Sending RXON\n" "* with%s RXON_FILTER_ASSOC_MSK\n" - "* channel = %d\n" "* bssid = %pM\n", (new_assoc ? "" : "out"), - le16_to_cpu(il->staging.channel), il->staging.bssid_addr); - - il_set_rxon_hwcrypto(il, !il->cfg->mod_params->sw_crypto); - - /* Apply the new configuration - * RXON unassoc clears the station table in uCode so restoration of - * stations is needed after it (the RXON command) completes - */ - if (!new_assoc) { - ret = - il_send_cmd_pdu(il, C_RXON, - sizeof(struct il_rxon_cmd), &il->staging); - if (ret) { - IL_ERR("Error setting new RXON (%d)\n", ret); - return ret; - } - D_INFO("Return from !new_assoc RXON.\n"); - memcpy(active_rxon, &il->staging, sizeof(*active_rxon)); - il_clear_ucode_stations(il); - il_restore_stations(il); - ret = il4965_restore_default_wep_keys(il); - if (ret) { - IL_ERR("Failed to restore WEP keys (%d)\n", ret); - return ret; - } - } - if (new_assoc) { - il->start_calib = 0; - /* Apply the new configuration - * RXON assoc doesn't clear the station table in uCode, - */ - ret = - il_send_cmd_pdu(il, C_RXON, - sizeof(struct il_rxon_cmd), &il->staging); - if (ret) { - IL_ERR("Error setting new RXON (%d)\n", ret); - return ret; - } - memcpy(active_rxon, &il->staging, sizeof(*active_rxon)); - } - il_print_rx_config_cmd(il); - - il4965_init_sensitivity(il); - - /* If we issue a new RXON command which required a tune then we must - * send a new TXPOWER command or we won't be able to Tx any frames */ - ret = il_set_tx_power(il, il->tx_power_next, true); - if (ret) { - IL_ERR("Error sending TX power (%d)\n", ret); - return ret; - } - - return 0; -} - -static int -il4965_hw_channel_switch(struct il_priv *il, - struct ieee80211_channel_switch *ch_switch) -{ - int rc; - u8 band = 0; - bool is_ht40 = false; - u8 ctrl_chan_high = 0; - struct il4965_channel_switch_cmd cmd; - const struct il_channel_info *ch_info; - u32 switch_time_in_usec, ucode_switch_time; - u16 ch; - u32 tsf_low; - u8 switch_count; - u16 beacon_interval = le16_to_cpu(il->timing.beacon_interval); - struct ieee80211_vif *vif = il->vif; - band = (il->band == IEEE80211_BAND_2GHZ); - - if (WARN_ON_ONCE(vif == NULL)) - return -EIO; - - is_ht40 = iw4965_is_ht40_channel(il->staging.flags); - - if (is_ht40 && (il->staging.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK)) - ctrl_chan_high = 1; - - cmd.band = band; - cmd.expect_beacon = 0; - ch = ch_switch->chandef.chan->hw_value; - cmd.channel = cpu_to_le16(ch); - cmd.rxon_flags = il->staging.flags; - cmd.rxon_filter_flags = il->staging.filter_flags; - switch_count = ch_switch->count; - tsf_low = ch_switch->timestamp & 0x0ffffffff; - /* - * calculate the ucode channel switch time - * adding TSF as one of the factor for when to switch - */ - if (il->ucode_beacon_time > tsf_low && beacon_interval) { - if (switch_count > - ((il->ucode_beacon_time - tsf_low) / beacon_interval)) { - switch_count -= - (il->ucode_beacon_time - tsf_low) / beacon_interval; - } else - switch_count = 0; - } - if (switch_count <= 1) - cmd.switch_time = cpu_to_le32(il->ucode_beacon_time); - else { - switch_time_in_usec = - vif->bss_conf.beacon_int * switch_count * TIME_UNIT; - ucode_switch_time = - il_usecs_to_beacons(il, switch_time_in_usec, - beacon_interval); - cmd.switch_time = - il_add_beacon_time(il, il->ucode_beacon_time, - ucode_switch_time, beacon_interval); - } - D_11H("uCode time for the switch is 0x%x\n", cmd.switch_time); - ch_info = il_get_channel_info(il, il->band, ch); - if (ch_info) - cmd.expect_beacon = il_is_channel_radar(ch_info); - else { - IL_ERR("invalid channel switch from %u to %u\n", - il->active.channel, ch); - return -EFAULT; - } - - rc = il4965_fill_txpower_tbl(il, band, ch, is_ht40, ctrl_chan_high, - &cmd.tx_power); - if (rc) { - D_11H("error:%d fill txpower_tbl\n", rc); - return rc; - } - - return il_send_cmd_pdu(il, C_CHANNEL_SWITCH, sizeof(cmd), &cmd); -} - -/** - * il4965_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array - */ -static void -il4965_txq_update_byte_cnt_tbl(struct il_priv *il, struct il_tx_queue *txq, - u16 byte_cnt) -{ - struct il4965_scd_bc_tbl *scd_bc_tbl = il->scd_bc_tbls.addr; - int txq_id = txq->q.id; - int write_ptr = txq->q.write_ptr; - int len = byte_cnt + IL_TX_CRC_SIZE + IL_TX_DELIMITER_SIZE; - __le16 bc_ent; - - WARN_ON(len > 0xFFF || write_ptr >= TFD_QUEUE_SIZE_MAX); - - bc_ent = cpu_to_le16(len & 0xFFF); - /* Set up byte count within first 256 entries */ - scd_bc_tbl[txq_id].tfd_offset[write_ptr] = bc_ent; - - /* If within first 64 entries, duplicate at end */ - if (write_ptr < TFD_QUEUE_SIZE_BC_DUP) - scd_bc_tbl[txq_id].tfd_offset[TFD_QUEUE_SIZE_MAX + write_ptr] = - bc_ent; -} - -/** - * il4965_hw_get_temperature - return the calibrated temperature (in Kelvin) - * @stats: Provides the temperature reading from the uCode - * - * A return of <0 indicates bogus data in the stats - */ -static int -il4965_hw_get_temperature(struct il_priv *il) -{ - s32 temperature; - s32 vt; - s32 R1, R2, R3; - u32 R4; - - if (test_bit(S_TEMPERATURE, &il->status) && - (il->_4965.stats.flag & STATS_REPLY_FLG_HT40_MODE_MSK)) { - D_TEMP("Running HT40 temperature calibration\n"); - R1 = (s32) le32_to_cpu(il->card_alive_init.therm_r1[1]); - R2 = (s32) le32_to_cpu(il->card_alive_init.therm_r2[1]); - R3 = (s32) le32_to_cpu(il->card_alive_init.therm_r3[1]); - R4 = le32_to_cpu(il->card_alive_init.therm_r4[1]); - } else { - D_TEMP("Running temperature calibration\n"); - R1 = (s32) le32_to_cpu(il->card_alive_init.therm_r1[0]); - R2 = (s32) le32_to_cpu(il->card_alive_init.therm_r2[0]); - R3 = (s32) le32_to_cpu(il->card_alive_init.therm_r3[0]); - R4 = le32_to_cpu(il->card_alive_init.therm_r4[0]); - } - - /* - * Temperature is only 23 bits, so sign extend out to 32. - * - * NOTE If we haven't received a stats notification yet - * with an updated temperature, use R4 provided to us in the - * "initialize" ALIVE response. - */ - if (!test_bit(S_TEMPERATURE, &il->status)) - vt = sign_extend32(R4, 23); - else - vt = sign_extend32(le32_to_cpu - (il->_4965.stats.general.common.temperature), - 23); - - D_TEMP("Calib values R[1-3]: %d %d %d R4: %d\n", R1, R2, R3, vt); - - if (R3 == R1) { - IL_ERR("Calibration conflict R1 == R3\n"); - return -1; - } - - /* Calculate temperature in degrees Kelvin, adjust by 97%. - * Add offset to center the adjustment around 0 degrees Centigrade. */ - temperature = TEMPERATURE_CALIB_A_VAL * (vt - R2); - temperature /= (R3 - R1); - temperature = - (temperature * 97) / 100 + TEMPERATURE_CALIB_KELVIN_OFFSET; - - D_TEMP("Calibrated temperature: %dK, %dC\n", temperature, - KELVIN_TO_CELSIUS(temperature)); - - return temperature; -} - -/* Adjust Txpower only if temperature variance is greater than threshold. */ -#define IL_TEMPERATURE_THRESHOLD 3 - -/** - * il4965_is_temp_calib_needed - determines if new calibration is needed - * - * If the temperature changed has changed sufficiently, then a recalibration - * is needed. - * - * Assumes caller will replace il->last_temperature once calibration - * executed. - */ -static int -il4965_is_temp_calib_needed(struct il_priv *il) -{ - int temp_diff; - - if (!test_bit(S_STATS, &il->status)) { - D_TEMP("Temperature not updated -- no stats.\n"); - return 0; - } - - temp_diff = il->temperature - il->last_temperature; - - /* get absolute value */ - if (temp_diff < 0) { - D_POWER("Getting cooler, delta %d\n", temp_diff); - temp_diff = -temp_diff; - } else if (temp_diff == 0) - D_POWER("Temperature unchanged\n"); - else - D_POWER("Getting warmer, delta %d\n", temp_diff); - - if (temp_diff < IL_TEMPERATURE_THRESHOLD) { - D_POWER(" => thermal txpower calib not needed\n"); - return 0; - } - - D_POWER(" => thermal txpower calib needed\n"); - - return 1; -} - -void -il4965_temperature_calib(struct il_priv *il) -{ - s32 temp; - - temp = il4965_hw_get_temperature(il); - if (IL_TX_POWER_TEMPERATURE_OUT_OF_RANGE(temp)) - return; - - if (il->temperature != temp) { - if (il->temperature) - D_TEMP("Temperature changed " "from %dC to %dC\n", - KELVIN_TO_CELSIUS(il->temperature), - KELVIN_TO_CELSIUS(temp)); - else - D_TEMP("Temperature " "initialized to %dC\n", - KELVIN_TO_CELSIUS(temp)); - } - - il->temperature = temp; - set_bit(S_TEMPERATURE, &il->status); - - if (!il->disable_tx_power_cal && - unlikely(!test_bit(S_SCANNING, &il->status)) && - il4965_is_temp_calib_needed(il)) - queue_work(il->workqueue, &il->txpower_work); -} - -static u16 -il4965_get_hcmd_size(u8 cmd_id, u16 len) -{ - switch (cmd_id) { - case C_RXON: - return (u16) sizeof(struct il4965_rxon_cmd); - default: - return len; - } -} - -static u16 -il4965_build_addsta_hcmd(const struct il_addsta_cmd *cmd, u8 * data) -{ - struct il4965_addsta_cmd *addsta = (struct il4965_addsta_cmd *)data; - addsta->mode = cmd->mode; - memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify)); - memcpy(&addsta->key, &cmd->key, sizeof(struct il4965_keyinfo)); - addsta->station_flags = cmd->station_flags; - addsta->station_flags_msk = cmd->station_flags_msk; - addsta->tid_disable_tx = cmd->tid_disable_tx; - addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid; - addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid; - addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn; - addsta->sleep_tx_count = cmd->sleep_tx_count; - addsta->reserved1 = cpu_to_le16(0); - addsta->reserved2 = cpu_to_le16(0); - - return (u16) sizeof(struct il4965_addsta_cmd); -} - -static void -il4965_post_scan(struct il_priv *il) -{ - /* - * Since setting the RXON may have been deferred while - * performing the scan, fire one off if needed - */ - if (memcmp(&il->staging, &il->active, sizeof(il->staging))) - il_commit_rxon(il); -} - -static void -il4965_post_associate(struct il_priv *il) -{ - struct ieee80211_vif *vif = il->vif; - int ret = 0; - - if (!vif || !il->is_open) - return; - - if (test_bit(S_EXIT_PENDING, &il->status)) - return; - - il_scan_cancel_timeout(il, 200); - - il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; - il_commit_rxon(il); - - ret = il_send_rxon_timing(il); - if (ret) - IL_WARN("RXON timing - " "Attempting to continue.\n"); - - il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; - - il_set_rxon_ht(il, &il->current_ht_config); - - if (il->ops->set_rxon_chain) - il->ops->set_rxon_chain(il); - - il->staging.assoc_id = cpu_to_le16(vif->bss_conf.aid); - - D_ASSOC("assoc id %d beacon interval %d\n", vif->bss_conf.aid, - vif->bss_conf.beacon_int); - - if (vif->bss_conf.use_short_preamble) - il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; - else - il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; - - if (il->staging.flags & RXON_FLG_BAND_24G_MSK) { - if (vif->bss_conf.use_short_slot) - il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; - else - il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; - } - - il_commit_rxon(il); - - D_ASSOC("Associated as %d to: %pM\n", vif->bss_conf.aid, - il->active.bssid_addr); - - switch (vif->type) { - case NL80211_IFTYPE_STATION: - break; - case NL80211_IFTYPE_ADHOC: - il4965_send_beacon_cmd(il); - break; - default: - IL_ERR("%s Should not be called in %d mode\n", __func__, - vif->type); - break; - } - - /* the chain noise calibration will enabled PM upon completion - * If chain noise has already been run, then we need to enable - * power management here */ - if (il->chain_noise_data.state == IL_CHAIN_NOISE_DONE) - il_power_update_mode(il, false); - - /* Enable Rx differential gain and sensitivity calibrations */ - il4965_chain_noise_reset(il); - il->start_calib = 1; -} - -static void -il4965_config_ap(struct il_priv *il) -{ - struct ieee80211_vif *vif = il->vif; - int ret = 0; - - lockdep_assert_held(&il->mutex); - - if (test_bit(S_EXIT_PENDING, &il->status)) - return; - - /* The following should be done only at AP bring up */ - if (!il_is_associated(il)) { - - /* RXON - unassoc (to set timing command) */ - il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; - il_commit_rxon(il); - - /* RXON Timing */ - ret = il_send_rxon_timing(il); - if (ret) - IL_WARN("RXON timing failed - " - "Attempting to continue.\n"); - - /* AP has all antennas */ - il->chain_noise_data.active_chains = il->hw_params.valid_rx_ant; - il_set_rxon_ht(il, &il->current_ht_config); - if (il->ops->set_rxon_chain) - il->ops->set_rxon_chain(il); - - il->staging.assoc_id = 0; - - if (vif->bss_conf.use_short_preamble) - il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; - else - il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; - - if (il->staging.flags & RXON_FLG_BAND_24G_MSK) { - if (vif->bss_conf.use_short_slot) - il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; - else - il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; - } - /* need to send beacon cmd before committing assoc RXON! */ - il4965_send_beacon_cmd(il); - /* restore RXON assoc */ - il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; - il_commit_rxon(il); - } - il4965_send_beacon_cmd(il); -} - -const struct il_ops il4965_ops = { - .txq_update_byte_cnt_tbl = il4965_txq_update_byte_cnt_tbl, - .txq_attach_buf_to_tfd = il4965_hw_txq_attach_buf_to_tfd, - .txq_free_tfd = il4965_hw_txq_free_tfd, - .txq_init = il4965_hw_tx_queue_init, - .is_valid_rtc_data_addr = il4965_hw_valid_rtc_data_addr, - .init_alive_start = il4965_init_alive_start, - .load_ucode = il4965_load_bsm, - .dump_nic_error_log = il4965_dump_nic_error_log, - .dump_fh = il4965_dump_fh, - .set_channel_switch = il4965_hw_channel_switch, - .apm_init = il_apm_init, - .send_tx_power = il4965_send_tx_power, - .update_chain_flags = il4965_update_chain_flags, - .eeprom_acquire_semaphore = il4965_eeprom_acquire_semaphore, - .eeprom_release_semaphore = il4965_eeprom_release_semaphore, - - .rxon_assoc = il4965_send_rxon_assoc, - .commit_rxon = il4965_commit_rxon, - .set_rxon_chain = il4965_set_rxon_chain, - - .get_hcmd_size = il4965_get_hcmd_size, - .build_addsta_hcmd = il4965_build_addsta_hcmd, - .request_scan = il4965_request_scan, - .post_scan = il4965_post_scan, - - .post_associate = il4965_post_associate, - .config_ap = il4965_config_ap, - .manage_ibss_station = il4965_manage_ibss_station, - .update_bcast_stations = il4965_update_bcast_stations, - - .send_led_cmd = il4965_send_led_cmd, -}; - -struct il_cfg il4965_cfg = { - .name = "Intel(R) Wireless WiFi Link 4965AGN", - .fw_name_pre = IL4965_FW_PRE, - .ucode_api_max = IL4965_UCODE_API_MAX, - .ucode_api_min = IL4965_UCODE_API_MIN, - .sku = IL_SKU_A | IL_SKU_G | IL_SKU_N, - .valid_tx_ant = ANT_AB, - .valid_rx_ant = ANT_ABC, - .eeprom_ver = EEPROM_4965_EEPROM_VERSION, - .eeprom_calib_ver = EEPROM_4965_TX_POWER_VERSION, - .mod_params = &il4965_mod_params, - .led_mode = IL_LED_BLINK, - /* - * Force use of chains B and C for scan RX on 5 GHz band - * because the device has off-channel reception on chain A. - */ - .scan_rx_antennas[IEEE80211_BAND_5GHZ] = ANT_BC, - - .eeprom_size = IL4965_EEPROM_IMG_SIZE, - .num_of_queues = IL49_NUM_QUEUES, - .num_of_ampdu_queues = IL49_NUM_AMPDU_QUEUES, - .pll_cfg_val = 0, - .set_l0s = true, - .use_bsm = true, - .led_compensation = 61, - .chain_noise_num_beacons = IL4965_CAL_NUM_BEACONS, - .wd_timeout = IL_DEF_WD_TIMEOUT, - .temperature_kelvin = true, - .ucode_tracing = true, - .sensitivity_calib_by_driver = true, - .chain_noise_calib_by_driver = true, - - .regulatory_bands = { - EEPROM_REGULATORY_BAND_1_CHANNELS, - EEPROM_REGULATORY_BAND_2_CHANNELS, - EEPROM_REGULATORY_BAND_3_CHANNELS, - EEPROM_REGULATORY_BAND_4_CHANNELS, - EEPROM_REGULATORY_BAND_5_CHANNELS, - EEPROM_4965_REGULATORY_BAND_24_HT40_CHANNELS, - EEPROM_4965_REGULATORY_BAND_52_HT40_CHANNELS - }, - -}; - -/* Module firmware */ -MODULE_FIRMWARE(IL4965_MODULE_FIRMWARE(IL4965_UCODE_API_MAX)); diff --git a/drivers/net/wireless/iwlegacy/4965.h b/drivers/net/wireless/iwlegacy/4965.h deleted file mode 100644 index 8ab8706f9422..000000000000 --- a/drivers/net/wireless/iwlegacy/4965.h +++ /dev/null @@ -1,1285 +0,0 @@ -/****************************************************************************** - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, - * USA - * - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - *****************************************************************************/ - -#ifndef __il_4965_h__ -#define __il_4965_h__ - -struct il_rx_queue; -struct il_rx_buf; -struct il_rx_pkt; -struct il_tx_queue; -struct il_rxon_context; - -/* configuration for the _4965 devices */ -extern struct il_cfg il4965_cfg; -extern const struct il_ops il4965_ops; - -extern struct il_mod_params il4965_mod_params; - -/* tx queue */ -void il4965_free_tfds_in_queue(struct il_priv *il, int sta_id, int tid, - int freed); - -/* RXON */ -void il4965_set_rxon_chain(struct il_priv *il); - -/* uCode */ -int il4965_verify_ucode(struct il_priv *il); - -/* lib */ -void il4965_check_abort_status(struct il_priv *il, u8 frame_count, u32 status); - -void il4965_rx_queue_reset(struct il_priv *il, struct il_rx_queue *rxq); -int il4965_rx_init(struct il_priv *il, struct il_rx_queue *rxq); -int il4965_hw_nic_init(struct il_priv *il); -int il4965_dump_fh(struct il_priv *il, char **buf, bool display); - -void il4965_nic_config(struct il_priv *il); - -/* rx */ -void il4965_rx_queue_restock(struct il_priv *il); -void il4965_rx_replenish(struct il_priv *il); -void il4965_rx_replenish_now(struct il_priv *il); -void il4965_rx_queue_free(struct il_priv *il, struct il_rx_queue *rxq); -int il4965_rxq_stop(struct il_priv *il); -int il4965_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band); -void il4965_rx_handle(struct il_priv *il); - -/* tx */ -void il4965_hw_txq_free_tfd(struct il_priv *il, struct il_tx_queue *txq); -int il4965_hw_txq_attach_buf_to_tfd(struct il_priv *il, struct il_tx_queue *txq, - dma_addr_t addr, u16 len, u8 reset, u8 pad); -int il4965_hw_tx_queue_init(struct il_priv *il, struct il_tx_queue *txq); -void il4965_hwrate_to_tx_control(struct il_priv *il, u32 rate_n_flags, - struct ieee80211_tx_info *info); -int il4965_tx_skb(struct il_priv *il, - struct ieee80211_sta *sta, - struct sk_buff *skb); -int il4965_tx_agg_start(struct il_priv *il, struct ieee80211_vif *vif, - struct ieee80211_sta *sta, u16 tid, u16 * ssn); -int il4965_tx_agg_stop(struct il_priv *il, struct ieee80211_vif *vif, - struct ieee80211_sta *sta, u16 tid); -int il4965_txq_check_empty(struct il_priv *il, int sta_id, u8 tid, int txq_id); -int il4965_tx_queue_reclaim(struct il_priv *il, int txq_id, int idx); -void il4965_hw_txq_ctx_free(struct il_priv *il); -int il4965_txq_ctx_alloc(struct il_priv *il); -void il4965_txq_ctx_reset(struct il_priv *il); -void il4965_txq_ctx_stop(struct il_priv *il); -void il4965_txq_set_sched(struct il_priv *il, u32 mask); - -/* - * Acquire il->lock before calling this function ! - */ -void il4965_set_wr_ptrs(struct il_priv *il, int txq_id, u32 idx); -/** - * il4965_tx_queue_set_status - (optionally) start Tx/Cmd queue - * @tx_fifo_id: Tx DMA/FIFO channel (range 0-7) that the queue will feed - * @scd_retry: (1) Indicates queue will be used in aggregation mode - * - * NOTE: Acquire il->lock before calling this function ! - */ -void il4965_tx_queue_set_status(struct il_priv *il, struct il_tx_queue *txq, - int tx_fifo_id, int scd_retry); - -/* scan */ -int il4965_request_scan(struct il_priv *il, struct ieee80211_vif *vif); - -/* station mgmt */ -int il4965_manage_ibss_station(struct il_priv *il, struct ieee80211_vif *vif, - bool add); - -/* hcmd */ -int il4965_send_beacon_cmd(struct il_priv *il); - -#ifdef CONFIG_IWLEGACY_DEBUG -const char *il4965_get_tx_fail_reason(u32 status); -#else -static inline const char * -il4965_get_tx_fail_reason(u32 status) -{ - return ""; -} -#endif - -/* station management */ -int il4965_alloc_bcast_station(struct il_priv *il); -int il4965_add_bssid_station(struct il_priv *il, const u8 *addr, u8 *sta_id_r); -int il4965_remove_default_wep_key(struct il_priv *il, - struct ieee80211_key_conf *key); -int il4965_set_default_wep_key(struct il_priv *il, - struct ieee80211_key_conf *key); -int il4965_restore_default_wep_keys(struct il_priv *il); -int il4965_set_dynamic_key(struct il_priv *il, - struct ieee80211_key_conf *key, u8 sta_id); -int il4965_remove_dynamic_key(struct il_priv *il, - struct ieee80211_key_conf *key, u8 sta_id); -void il4965_update_tkip_key(struct il_priv *il, - struct ieee80211_key_conf *keyconf, - struct ieee80211_sta *sta, u32 iv32, - u16 *phase1key); -int il4965_sta_tx_modify_enable_tid(struct il_priv *il, int sta_id, int tid); -int il4965_sta_rx_agg_start(struct il_priv *il, struct ieee80211_sta *sta, - int tid, u16 ssn); -int il4965_sta_rx_agg_stop(struct il_priv *il, struct ieee80211_sta *sta, - int tid); -void il4965_sta_modify_sleep_tx_count(struct il_priv *il, int sta_id, int cnt); -int il4965_update_bcast_stations(struct il_priv *il); - -/* rate */ -static inline u8 -il4965_hw_get_rate(__le32 rate_n_flags) -{ - return le32_to_cpu(rate_n_flags) & 0xFF; -} - -/* eeprom */ -void il4965_eeprom_get_mac(const struct il_priv *il, u8 * mac); -int il4965_eeprom_acquire_semaphore(struct il_priv *il); -void il4965_eeprom_release_semaphore(struct il_priv *il); -int il4965_eeprom_check_version(struct il_priv *il); - -/* mac80211 handlers (for 4965) */ -void il4965_mac_tx(struct ieee80211_hw *hw, - struct ieee80211_tx_control *control, - struct sk_buff *skb); -int il4965_mac_start(struct ieee80211_hw *hw); -void il4965_mac_stop(struct ieee80211_hw *hw); -void il4965_configure_filter(struct ieee80211_hw *hw, - unsigned int changed_flags, - unsigned int *total_flags, u64 multicast); -int il4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, - struct ieee80211_vif *vif, struct ieee80211_sta *sta, - struct ieee80211_key_conf *key); -void il4965_mac_update_tkip_key(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - struct ieee80211_key_conf *keyconf, - struct ieee80211_sta *sta, u32 iv32, - u16 *phase1key); -int il4965_mac_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - enum ieee80211_ampdu_mlme_action action, - struct ieee80211_sta *sta, u16 tid, u16 * ssn, - u8 buf_size, bool amsdu); -int il4965_mac_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - struct ieee80211_sta *sta); -void -il4965_mac_channel_switch(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - struct ieee80211_channel_switch *ch_switch); - -void il4965_led_enable(struct il_priv *il); - -/* EEPROM */ -#define IL4965_EEPROM_IMG_SIZE 1024 - -/* - * uCode queue management definitions ... - * The first queue used for block-ack aggregation is #7 (4965 only). - * All block-ack aggregation queues should map to Tx DMA/FIFO channel 7. - */ -#define IL49_FIRST_AMPDU_QUEUE 7 - -/* Sizes and addresses for instruction and data memory (SRAM) in - * 4965's embedded processor. Driver access is via HBUS_TARG_MEM_* regs. */ -#define IL49_RTC_INST_LOWER_BOUND (0x000000) -#define IL49_RTC_INST_UPPER_BOUND (0x018000) - -#define IL49_RTC_DATA_LOWER_BOUND (0x800000) -#define IL49_RTC_DATA_UPPER_BOUND (0x80A000) - -#define IL49_RTC_INST_SIZE (IL49_RTC_INST_UPPER_BOUND - \ - IL49_RTC_INST_LOWER_BOUND) -#define IL49_RTC_DATA_SIZE (IL49_RTC_DATA_UPPER_BOUND - \ - IL49_RTC_DATA_LOWER_BOUND) - -#define IL49_MAX_INST_SIZE IL49_RTC_INST_SIZE -#define IL49_MAX_DATA_SIZE IL49_RTC_DATA_SIZE - -/* Size of uCode instruction memory in bootstrap state machine */ -#define IL49_MAX_BSM_SIZE BSM_SRAM_SIZE - -static inline int -il4965_hw_valid_rtc_data_addr(u32 addr) -{ - return (addr >= IL49_RTC_DATA_LOWER_BOUND && - addr < IL49_RTC_DATA_UPPER_BOUND); -} - -/********************* START TEMPERATURE *************************************/ - -/** - * 4965 temperature calculation. - * - * The driver must calculate the device temperature before calculating - * a txpower setting (amplifier gain is temperature dependent). The - * calculation uses 4 measurements, 3 of which (R1, R2, R3) are calibration - * values used for the life of the driver, and one of which (R4) is the - * real-time temperature indicator. - * - * uCode provides all 4 values to the driver via the "initialize alive" - * notification (see struct il4965_init_alive_resp). After the runtime uCode - * image loads, uCode updates the R4 value via stats notifications - * (see N_STATS), which occur after each received beacon - * when associated, or can be requested via C_STATS. - * - * NOTE: uCode provides the R4 value as a 23-bit signed value. Driver - * must sign-extend to 32 bits before applying formula below. - * - * Formula: - * - * degrees Kelvin = ((97 * 259 * (R4 - R2) / (R3 - R1)) / 100) + 8 - * - * NOTE: The basic formula is 259 * (R4-R2) / (R3-R1). The 97/100 is - * an additional correction, which should be centered around 0 degrees - * Celsius (273 degrees Kelvin). The 8 (3 percent of 273) compensates for - * centering the 97/100 correction around 0 degrees K. - * - * Add 273 to Kelvin value to find degrees Celsius, for comparing current - * temperature with factory-measured temperatures when calculating txpower - * settings. - */ -#define TEMPERATURE_CALIB_KELVIN_OFFSET 8 -#define TEMPERATURE_CALIB_A_VAL 259 - -/* Limit range of calculated temperature to be between these Kelvin values */ -#define IL_TX_POWER_TEMPERATURE_MIN (263) -#define IL_TX_POWER_TEMPERATURE_MAX (410) - -#define IL_TX_POWER_TEMPERATURE_OUT_OF_RANGE(t) \ - ((t) < IL_TX_POWER_TEMPERATURE_MIN || \ - (t) > IL_TX_POWER_TEMPERATURE_MAX) - -void il4965_temperature_calib(struct il_priv *il); -/********************* END TEMPERATURE ***************************************/ - -/********************* START TXPOWER *****************************************/ - -/** - * 4965 txpower calculations rely on information from three sources: - * - * 1) EEPROM - * 2) "initialize" alive notification - * 3) stats notifications - * - * EEPROM data consists of: - * - * 1) Regulatory information (max txpower and channel usage flags) is provided - * separately for each channel that can possibly supported by 4965. - * 40 MHz wide (.11n HT40) channels are listed separately from 20 MHz - * (legacy) channels. - * - * See struct il4965_eeprom_channel for format, and struct il4965_eeprom - * for locations in EEPROM. - * - * 2) Factory txpower calibration information is provided separately for - * sub-bands of contiguous channels. 2.4GHz has just one sub-band, - * but 5 GHz has several sub-bands. - * - * In addition, per-band (2.4 and 5 Ghz) saturation txpowers are provided. - * - * See struct il4965_eeprom_calib_info (and the tree of structures - * contained within it) for format, and struct il4965_eeprom for - * locations in EEPROM. - * - * "Initialization alive" notification (see struct il4965_init_alive_resp) - * consists of: - * - * 1) Temperature calculation parameters. - * - * 2) Power supply voltage measurement. - * - * 3) Tx gain compensation to balance 2 transmitters for MIMO use. - * - * Statistics notifications deliver: - * - * 1) Current values for temperature param R4. - */ - -/** - * To calculate a txpower setting for a given desired target txpower, channel, - * modulation bit rate, and transmitter chain (4965 has 2 transmitters to - * support MIMO and transmit diversity), driver must do the following: - * - * 1) Compare desired txpower vs. (EEPROM) regulatory limit for this channel. - * Do not exceed regulatory limit; reduce target txpower if necessary. - * - * If setting up txpowers for MIMO rates (rate idxes 8-15, 24-31), - * 2 transmitters will be used simultaneously; driver must reduce the - * regulatory limit by 3 dB (half-power) for each transmitter, so the - * combined total output of the 2 transmitters is within regulatory limits. - * - * - * 2) Compare target txpower vs. (EEPROM) saturation txpower *reduced by - * backoff for this bit rate*. Do not exceed (saturation - backoff[rate]); - * reduce target txpower if necessary. - * - * Backoff values below are in 1/2 dB units (equivalent to steps in - * txpower gain tables): - * - * OFDM 6 - 36 MBit: 10 steps (5 dB) - * OFDM 48 MBit: 15 steps (7.5 dB) - * OFDM 54 MBit: 17 steps (8.5 dB) - * OFDM 60 MBit: 20 steps (10 dB) - * CCK all rates: 10 steps (5 dB) - * - * Backoff values apply to saturation txpower on a per-transmitter basis; - * when using MIMO (2 transmitters), each transmitter uses the same - * saturation level provided in EEPROM, and the same backoff values; - * no reduction (such as with regulatory txpower limits) is required. - * - * Saturation and Backoff values apply equally to 20 Mhz (legacy) channel - * widths and 40 Mhz (.11n HT40) channel widths; there is no separate - * factory measurement for ht40 channels. - * - * The result of this step is the final target txpower. The rest of - * the steps figure out the proper settings for the device to achieve - * that target txpower. - * - * - * 3) Determine (EEPROM) calibration sub band for the target channel, by - * comparing against first and last channels in each sub band - * (see struct il4965_eeprom_calib_subband_info). - * - * - * 4) Linearly interpolate (EEPROM) factory calibration measurement sets, - * referencing the 2 factory-measured (sample) channels within the sub band. - * - * Interpolation is based on difference between target channel's frequency - * and the sample channels' frequencies. Since channel numbers are based - * on frequency (5 MHz between each channel number), this is equivalent - * to interpolating based on channel number differences. - * - * Note that the sample channels may or may not be the channels at the - * edges of the sub band. The target channel may be "outside" of the - * span of the sampled channels. - * - * Driver may choose the pair (for 2 Tx chains) of measurements (see - * struct il4965_eeprom_calib_ch_info) for which the actual measured - * txpower comes closest to the desired txpower. Usually, though, - * the middle set of measurements is closest to the regulatory limits, - * and is therefore a good choice for all txpower calculations (this - * assumes that high accuracy is needed for maximizing legal txpower, - * while lower txpower configurations do not need as much accuracy). - * - * Driver should interpolate both members of the chosen measurement pair, - * i.e. for both Tx chains (radio transmitters), unless the driver knows - * that only one of the chains will be used (e.g. only one tx antenna - * connected, but this should be unusual). The rate scaling algorithm - * switches antennas to find best performance, so both Tx chains will - * be used (although only one at a time) even for non-MIMO transmissions. - * - * Driver should interpolate factory values for temperature, gain table - * idx, and actual power. The power amplifier detector values are - * not used by the driver. - * - * Sanity check: If the target channel happens to be one of the sample - * channels, the results should agree with the sample channel's - * measurements! - * - * - * 5) Find difference between desired txpower and (interpolated) - * factory-measured txpower. Using (interpolated) factory gain table idx - * (shown elsewhere) as a starting point, adjust this idx lower to - * increase txpower, or higher to decrease txpower, until the target - * txpower is reached. Each step in the gain table is 1/2 dB. - * - * For example, if factory measured txpower is 16 dBm, and target txpower - * is 13 dBm, add 6 steps to the factory gain idx to reduce txpower - * by 3 dB. - * - * - * 6) Find difference between current device temperature and (interpolated) - * factory-measured temperature for sub-band. Factory values are in - * degrees Celsius. To calculate current temperature, see comments for - * "4965 temperature calculation". - * - * If current temperature is higher than factory temperature, driver must - * increase gain (lower gain table idx), and vice verse. - * - * Temperature affects gain differently for different channels: - * - * 2.4 GHz all channels: 3.5 degrees per half-dB step - * 5 GHz channels 34-43: 4.5 degrees per half-dB step - * 5 GHz channels >= 44: 4.0 degrees per half-dB step - * - * NOTE: Temperature can increase rapidly when transmitting, especially - * with heavy traffic at high txpowers. Driver should update - * temperature calculations often under these conditions to - * maintain strong txpower in the face of rising temperature. - * - * - * 7) Find difference between current power supply voltage indicator - * (from "initialize alive") and factory-measured power supply voltage - * indicator (EEPROM). - * - * If the current voltage is higher (indicator is lower) than factory - * voltage, gain should be reduced (gain table idx increased) by: - * - * (eeprom - current) / 7 - * - * If the current voltage is lower (indicator is higher) than factory - * voltage, gain should be increased (gain table idx decreased) by: - * - * 2 * (current - eeprom) / 7 - * - * If number of idx steps in either direction turns out to be > 2, - * something is wrong ... just use 0. - * - * NOTE: Voltage compensation is independent of band/channel. - * - * NOTE: "Initialize" uCode measures current voltage, which is assumed - * to be constant after this initial measurement. Voltage - * compensation for txpower (number of steps in gain table) - * may be calculated once and used until the next uCode bootload. - * - * - * 8) If setting up txpowers for MIMO rates (rate idxes 8-15, 24-31), - * adjust txpower for each transmitter chain, so txpower is balanced - * between the two chains. There are 5 pairs of tx_atten[group][chain] - * values in "initialize alive", one pair for each of 5 channel ranges: - * - * Group 0: 5 GHz channel 34-43 - * Group 1: 5 GHz channel 44-70 - * Group 2: 5 GHz channel 71-124 - * Group 3: 5 GHz channel 125-200 - * Group 4: 2.4 GHz all channels - * - * Add the tx_atten[group][chain] value to the idx for the target chain. - * The values are signed, but are in pairs of 0 and a non-negative number, - * so as to reduce gain (if necessary) of the "hotter" channel. This - * avoids any need to double-check for regulatory compliance after - * this step. - * - * - * 9) If setting up for a CCK rate, lower the gain by adding a CCK compensation - * value to the idx: - * - * Hardware rev B: 9 steps (4.5 dB) - * Hardware rev C: 5 steps (2.5 dB) - * - * Hardware rev for 4965 can be determined by reading CSR_HW_REV_WA_REG, - * bits [3:2], 1 = B, 2 = C. - * - * NOTE: This compensation is in addition to any saturation backoff that - * might have been applied in an earlier step. - * - * - * 10) Select the gain table, based on band (2.4 vs 5 GHz). - * - * Limit the adjusted idx to stay within the table! - * - * - * 11) Read gain table entries for DSP and radio gain, place into appropriate - * location(s) in command (struct il4965_txpowertable_cmd). - */ - -/** - * When MIMO is used (2 transmitters operating simultaneously), driver should - * limit each transmitter to deliver a max of 3 dB below the regulatory limit - * for the device. That is, use half power for each transmitter, so total - * txpower is within regulatory limits. - * - * The value "6" represents number of steps in gain table to reduce power 3 dB. - * Each step is 1/2 dB. - */ -#define IL_TX_POWER_MIMO_REGULATORY_COMPENSATION (6) - -/** - * CCK gain compensation. - * - * When calculating txpowers for CCK, after making sure that the target power - * is within regulatory and saturation limits, driver must additionally - * back off gain by adding these values to the gain table idx. - * - * Hardware rev for 4965 can be determined by reading CSR_HW_REV_WA_REG, - * bits [3:2], 1 = B, 2 = C. - */ -#define IL_TX_POWER_CCK_COMPENSATION_B_STEP (9) -#define IL_TX_POWER_CCK_COMPENSATION_C_STEP (5) - -/* - * 4965 power supply voltage compensation for txpower - */ -#define TX_POWER_IL_VOLTAGE_CODES_PER_03V (7) - -/** - * Gain tables. - * - * The following tables contain pair of values for setting txpower, i.e. - * gain settings for the output of the device's digital signal processor (DSP), - * and for the analog gain structure of the transmitter. - * - * Each entry in the gain tables represents a step of 1/2 dB. Note that these - * are *relative* steps, not indications of absolute output power. Output - * power varies with temperature, voltage, and channel frequency, and also - * requires consideration of average power (to satisfy regulatory constraints), - * and peak power (to avoid distortion of the output signal). - * - * Each entry contains two values: - * 1) DSP gain (or sometimes called DSP attenuation). This is a fine-grained - * linear value that multiplies the output of the digital signal processor, - * before being sent to the analog radio. - * 2) Radio gain. This sets the analog gain of the radio Tx path. - * It is a coarser setting, and behaves in a logarithmic (dB) fashion. - * - * EEPROM contains factory calibration data for txpower. This maps actual - * measured txpower levels to gain settings in the "well known" tables - * below ("well-known" means here that both factory calibration *and* the - * driver work with the same table). - * - * There are separate tables for 2.4 GHz and 5 GHz bands. The 5 GHz table - * has an extension (into negative idxes), in case the driver needs to - * boost power setting for high device temperatures (higher than would be - * present during factory calibration). A 5 Ghz EEPROM idx of "40" - * corresponds to the 49th entry in the table used by the driver. - */ -#define MIN_TX_GAIN_IDX (0) /* highest gain, lowest idx, 2.4 */ -#define MIN_TX_GAIN_IDX_52GHZ_EXT (-9) /* highest gain, lowest idx, 5 */ - -/** - * 2.4 GHz gain table - * - * Index Dsp gain Radio gain - * 0 110 0x3f (highest gain) - * 1 104 0x3f - * 2 98 0x3f - * 3 110 0x3e - * 4 104 0x3e - * 5 98 0x3e - * 6 110 0x3d - * 7 104 0x3d - * 8 98 0x3d - * 9 110 0x3c - * 10 104 0x3c - * 11 98 0x3c - * 12 110 0x3b - * 13 104 0x3b - * 14 98 0x3b - * 15 110 0x3a - * 16 104 0x3a - * 17 98 0x3a - * 18 110 0x39 - * 19 104 0x39 - * 20 98 0x39 - * 21 110 0x38 - * 22 104 0x38 - * 23 98 0x38 - * 24 110 0x37 - * 25 104 0x37 - * 26 98 0x37 - * 27 110 0x36 - * 28 104 0x36 - * 29 98 0x36 - * 30 110 0x35 - * 31 104 0x35 - * 32 98 0x35 - * 33 110 0x34 - * 34 104 0x34 - * 35 98 0x34 - * 36 110 0x33 - * 37 104 0x33 - * 38 98 0x33 - * 39 110 0x32 - * 40 104 0x32 - * 41 98 0x32 - * 42 110 0x31 - * 43 104 0x31 - * 44 98 0x31 - * 45 110 0x30 - * 46 104 0x30 - * 47 98 0x30 - * 48 110 0x6 - * 49 104 0x6 - * 50 98 0x6 - * 51 110 0x5 - * 52 104 0x5 - * 53 98 0x5 - * 54 110 0x4 - * 55 104 0x4 - * 56 98 0x4 - * 57 110 0x3 - * 58 104 0x3 - * 59 98 0x3 - * 60 110 0x2 - * 61 104 0x2 - * 62 98 0x2 - * 63 110 0x1 - * 64 104 0x1 - * 65 98 0x1 - * 66 110 0x0 - * 67 104 0x0 - * 68 98 0x0 - * 69 97 0 - * 70 96 0 - * 71 95 0 - * 72 94 0 - * 73 93 0 - * 74 92 0 - * 75 91 0 - * 76 90 0 - * 77 89 0 - * 78 88 0 - * 79 87 0 - * 80 86 0 - * 81 85 0 - * 82 84 0 - * 83 83 0 - * 84 82 0 - * 85 81 0 - * 86 80 0 - * 87 79 0 - * 88 78 0 - * 89 77 0 - * 90 76 0 - * 91 75 0 - * 92 74 0 - * 93 73 0 - * 94 72 0 - * 95 71 0 - * 96 70 0 - * 97 69 0 - * 98 68 0 - */ - -/** - * 5 GHz gain table - * - * Index Dsp gain Radio gain - * -9 123 0x3F (highest gain) - * -8 117 0x3F - * -7 110 0x3F - * -6 104 0x3F - * -5 98 0x3F - * -4 110 0x3E - * -3 104 0x3E - * -2 98 0x3E - * -1 110 0x3D - * 0 104 0x3D - * 1 98 0x3D - * 2 110 0x3C - * 3 104 0x3C - * 4 98 0x3C - * 5 110 0x3B - * 6 104 0x3B - * 7 98 0x3B - * 8 110 0x3A - * 9 104 0x3A - * 10 98 0x3A - * 11 110 0x39 - * 12 104 0x39 - * 13 98 0x39 - * 14 110 0x38 - * 15 104 0x38 - * 16 98 0x38 - * 17 110 0x37 - * 18 104 0x37 - * 19 98 0x37 - * 20 110 0x36 - * 21 104 0x36 - * 22 98 0x36 - * 23 110 0x35 - * 24 104 0x35 - * 25 98 0x35 - * 26 110 0x34 - * 27 104 0x34 - * 28 98 0x34 - * 29 110 0x33 - * 30 104 0x33 - * 31 98 0x33 - * 32 110 0x32 - * 33 104 0x32 - * 34 98 0x32 - * 35 110 0x31 - * 36 104 0x31 - * 37 98 0x31 - * 38 110 0x30 - * 39 104 0x30 - * 40 98 0x30 - * 41 110 0x25 - * 42 104 0x25 - * 43 98 0x25 - * 44 110 0x24 - * 45 104 0x24 - * 46 98 0x24 - * 47 110 0x23 - * 48 104 0x23 - * 49 98 0x23 - * 50 110 0x22 - * 51 104 0x18 - * 52 98 0x18 - * 53 110 0x17 - * 54 104 0x17 - * 55 98 0x17 - * 56 110 0x16 - * 57 104 0x16 - * 58 98 0x16 - * 59 110 0x15 - * 60 104 0x15 - * 61 98 0x15 - * 62 110 0x14 - * 63 104 0x14 - * 64 98 0x14 - * 65 110 0x13 - * 66 104 0x13 - * 67 98 0x13 - * 68 110 0x12 - * 69 104 0x08 - * 70 98 0x08 - * 71 110 0x07 - * 72 104 0x07 - * 73 98 0x07 - * 74 110 0x06 - * 75 104 0x06 - * 76 98 0x06 - * 77 110 0x05 - * 78 104 0x05 - * 79 98 0x05 - * 80 110 0x04 - * 81 104 0x04 - * 82 98 0x04 - * 83 110 0x03 - * 84 104 0x03 - * 85 98 0x03 - * 86 110 0x02 - * 87 104 0x02 - * 88 98 0x02 - * 89 110 0x01 - * 90 104 0x01 - * 91 98 0x01 - * 92 110 0x00 - * 93 104 0x00 - * 94 98 0x00 - * 95 93 0x00 - * 96 88 0x00 - * 97 83 0x00 - * 98 78 0x00 - */ - -/** - * Sanity checks and default values for EEPROM regulatory levels. - * If EEPROM values fall outside MIN/MAX range, use default values. - * - * Regulatory limits refer to the maximum average txpower allowed by - * regulatory agencies in the geographies in which the device is meant - * to be operated. These limits are SKU-specific (i.e. geography-specific), - * and channel-specific; each channel has an individual regulatory limit - * listed in the EEPROM. - * - * Units are in half-dBm (i.e. "34" means 17 dBm). - */ -#define IL_TX_POWER_DEFAULT_REGULATORY_24 (34) -#define IL_TX_POWER_DEFAULT_REGULATORY_52 (34) -#define IL_TX_POWER_REGULATORY_MIN (0) -#define IL_TX_POWER_REGULATORY_MAX (34) - -/** - * Sanity checks and default values for EEPROM saturation levels. - * If EEPROM values fall outside MIN/MAX range, use default values. - * - * Saturation is the highest level that the output power amplifier can produce - * without significant clipping distortion. This is a "peak" power level. - * Different types of modulation (i.e. various "rates", and OFDM vs. CCK) - * require differing amounts of backoff, relative to their average power output, - * in order to avoid clipping distortion. - * - * Driver must make sure that it is violating neither the saturation limit, - * nor the regulatory limit, when calculating Tx power settings for various - * rates. - * - * Units are in half-dBm (i.e. "38" means 19 dBm). - */ -#define IL_TX_POWER_DEFAULT_SATURATION_24 (38) -#define IL_TX_POWER_DEFAULT_SATURATION_52 (38) -#define IL_TX_POWER_SATURATION_MIN (20) -#define IL_TX_POWER_SATURATION_MAX (50) - -/** - * Channel groups used for Tx Attenuation calibration (MIMO tx channel balance) - * and thermal Txpower calibration. - * - * When calculating txpower, driver must compensate for current device - * temperature; higher temperature requires higher gain. Driver must calculate - * current temperature (see "4965 temperature calculation"), then compare vs. - * factory calibration temperature in EEPROM; if current temperature is higher - * than factory temperature, driver must *increase* gain by proportions shown - * in table below. If current temperature is lower than factory, driver must - * *decrease* gain. - * - * Different frequency ranges require different compensation, as shown below. - */ -/* Group 0, 5.2 GHz ch 34-43: 4.5 degrees per 1/2 dB. */ -#define CALIB_IL_TX_ATTEN_GR1_FCH 34 -#define CALIB_IL_TX_ATTEN_GR1_LCH 43 - -/* Group 1, 5.3 GHz ch 44-70: 4.0 degrees per 1/2 dB. */ -#define CALIB_IL_TX_ATTEN_GR2_FCH 44 -#define CALIB_IL_TX_ATTEN_GR2_LCH 70 - -/* Group 2, 5.5 GHz ch 71-124: 4.0 degrees per 1/2 dB. */ -#define CALIB_IL_TX_ATTEN_GR3_FCH 71 -#define CALIB_IL_TX_ATTEN_GR3_LCH 124 - -/* Group 3, 5.7 GHz ch 125-200: 4.0 degrees per 1/2 dB. */ -#define CALIB_IL_TX_ATTEN_GR4_FCH 125 -#define CALIB_IL_TX_ATTEN_GR4_LCH 200 - -/* Group 4, 2.4 GHz all channels: 3.5 degrees per 1/2 dB. */ -#define CALIB_IL_TX_ATTEN_GR5_FCH 1 -#define CALIB_IL_TX_ATTEN_GR5_LCH 20 - -enum { - CALIB_CH_GROUP_1 = 0, - CALIB_CH_GROUP_2 = 1, - CALIB_CH_GROUP_3 = 2, - CALIB_CH_GROUP_4 = 3, - CALIB_CH_GROUP_5 = 4, - CALIB_CH_GROUP_MAX -}; - -/********************* END TXPOWER *****************************************/ - -/** - * Tx/Rx Queues - * - * Most communication between driver and 4965 is via queues of data buffers. - * For example, all commands that the driver issues to device's embedded - * controller (uCode) are via the command queue (one of the Tx queues). All - * uCode command responses/replies/notifications, including Rx frames, are - * conveyed from uCode to driver via the Rx queue. - * - * Most support for these queues, including handshake support, resides in - * structures in host DRAM, shared between the driver and the device. When - * allocating this memory, the driver must make sure that data written by - * the host CPU updates DRAM immediately (and does not get "stuck" in CPU's - * cache memory), so DRAM and cache are consistent, and the device can - * immediately see changes made by the driver. - * - * 4965 supports up to 16 DRAM-based Tx queues, and services these queues via - * up to 7 DMA channels (FIFOs). Each Tx queue is supported by a circular array - * in DRAM containing 256 Transmit Frame Descriptors (TFDs). - */ -#define IL49_NUM_FIFOS 7 -#define IL49_CMD_FIFO_NUM 4 -#define IL49_NUM_QUEUES 16 -#define IL49_NUM_AMPDU_QUEUES 8 - -/** - * struct il4965_schedq_bc_tbl - * - * Byte Count table - * - * Each Tx queue uses a byte-count table containing 320 entries: - * one 16-bit entry for each of 256 TFDs, plus an additional 64 entries that - * duplicate the first 64 entries (to avoid wrap-around within a Tx win; - * max Tx win is 64 TFDs). - * - * When driver sets up a new TFD, it must also enter the total byte count - * of the frame to be transmitted into the corresponding entry in the byte - * count table for the chosen Tx queue. If the TFD idx is 0-63, the driver - * must duplicate the byte count entry in corresponding idx 256-319. - * - * padding puts each byte count table on a 1024-byte boundary; - * 4965 assumes tables are separated by 1024 bytes. - */ -struct il4965_scd_bc_tbl { - __le16 tfd_offset[TFD_QUEUE_BC_SIZE]; - u8 pad[1024 - (TFD_QUEUE_BC_SIZE) * sizeof(__le16)]; -} __packed; - -#define IL4965_RTC_INST_LOWER_BOUND (0x000000) - -/* RSSI to dBm */ -#define IL4965_RSSI_OFFSET 44 - -/* PCI registers */ -#define PCI_CFG_RETRY_TIMEOUT 0x041 - -#define IL4965_DEFAULT_TX_RETRY 15 - -/* EEPROM */ -#define IL4965_FIRST_AMPDU_QUEUE 10 - -/* Calibration */ -void il4965_chain_noise_calibration(struct il_priv *il, void *stat_resp); -void il4965_sensitivity_calibration(struct il_priv *il, void *resp); -void il4965_init_sensitivity(struct il_priv *il); -void il4965_reset_run_time_calib(struct il_priv *il); - -/* Debug */ -#ifdef CONFIG_IWLEGACY_DEBUGFS -extern const struct il_debugfs_ops il4965_debugfs_ops; -#endif - -/****************************/ -/* Flow Handler Definitions */ -/****************************/ - -/** - * This I/O area is directly read/writable by driver (e.g. Linux uses writel()) - * Addresses are offsets from device's PCI hardware base address. - */ -#define FH49_MEM_LOWER_BOUND (0x1000) -#define FH49_MEM_UPPER_BOUND (0x2000) - -/** - * Keep-Warm (KW) buffer base address. - * - * Driver must allocate a 4KByte buffer that is used by 4965 for keeping the - * host DRAM powered on (via dummy accesses to DRAM) to maintain low-latency - * DRAM access when 4965 is Txing or Rxing. The dummy accesses prevent host - * from going into a power-savings mode that would cause higher DRAM latency, - * and possible data over/under-runs, before all Tx/Rx is complete. - * - * Driver loads FH49_KW_MEM_ADDR_REG with the physical address (bits 35:4) - * of the buffer, which must be 4K aligned. Once this is set up, the 4965 - * automatically invokes keep-warm accesses when normal accesses might not - * be sufficient to maintain fast DRAM response. - * - * Bit fields: - * 31-0: Keep-warm buffer physical base address [35:4], must be 4K aligned - */ -#define FH49_KW_MEM_ADDR_REG (FH49_MEM_LOWER_BOUND + 0x97C) - -/** - * TFD Circular Buffers Base (CBBC) addresses - * - * 4965 has 16 base pointer registers, one for each of 16 host-DRAM-resident - * circular buffers (CBs/queues) containing Transmit Frame Descriptors (TFDs) - * (see struct il_tfd_frame). These 16 pointer registers are offset by 0x04 - * bytes from one another. Each TFD circular buffer in DRAM must be 256-byte - * aligned (address bits 0-7 must be 0). - * - * Bit fields in each pointer register: - * 27-0: TFD CB physical base address [35:8], must be 256-byte aligned - */ -#define FH49_MEM_CBBC_LOWER_BOUND (FH49_MEM_LOWER_BOUND + 0x9D0) -#define FH49_MEM_CBBC_UPPER_BOUND (FH49_MEM_LOWER_BOUND + 0xA10) - -/* Find TFD CB base pointer for given queue (range 0-15). */ -#define FH49_MEM_CBBC_QUEUE(x) (FH49_MEM_CBBC_LOWER_BOUND + (x) * 0x4) - -/** - * Rx SRAM Control and Status Registers (RSCSR) - * - * These registers provide handshake between driver and 4965 for the Rx queue - * (this queue handles *all* command responses, notifications, Rx data, etc. - * sent from 4965 uCode to host driver). Unlike Tx, there is only one Rx - * queue, and only one Rx DMA/FIFO channel. Also unlike Tx, which can - * concatenate up to 20 DRAM buffers to form a Tx frame, each Receive Buffer - * Descriptor (RBD) points to only one Rx Buffer (RB); there is a 1:1 - * mapping between RBDs and RBs. - * - * Driver must allocate host DRAM memory for the following, and set the - * physical address of each into 4965 registers: - * - * 1) Receive Buffer Descriptor (RBD) circular buffer (CB), typically with 256 - * entries (although any power of 2, up to 4096, is selectable by driver). - * Each entry (1 dword) points to a receive buffer (RB) of consistent size - * (typically 4K, although 8K or 16K are also selectable by driver). - * Driver sets up RB size and number of RBDs in the CB via Rx config - * register FH49_MEM_RCSR_CHNL0_CONFIG_REG. - * - * Bit fields within one RBD: - * 27-0: Receive Buffer physical address bits [35:8], 256-byte aligned - * - * Driver sets physical address [35:8] of base of RBD circular buffer - * into FH49_RSCSR_CHNL0_RBDCB_BASE_REG [27:0]. - * - * 2) Rx status buffer, 8 bytes, in which 4965 indicates which Rx Buffers - * (RBs) have been filled, via a "write pointer", actually the idx of - * the RB's corresponding RBD within the circular buffer. Driver sets - * physical address [35:4] into FH49_RSCSR_CHNL0_STTS_WPTR_REG [31:0]. - * - * Bit fields in lower dword of Rx status buffer (upper dword not used - * by driver; see struct il4965_shared, val0): - * 31-12: Not used by driver - * 11- 0: Index of last filled Rx buffer descriptor - * (4965 writes, driver reads this value) - * - * As the driver prepares Receive Buffers (RBs) for 4965 to fill, driver must - * enter pointers to these RBs into contiguous RBD circular buffer entries, - * and update the 4965's "write" idx register, - * FH49_RSCSR_CHNL0_RBDCB_WPTR_REG. - * - * This "write" idx corresponds to the *next* RBD that the driver will make - * available, i.e. one RBD past the tail of the ready-to-fill RBDs within - * the circular buffer. This value should initially be 0 (before preparing any - * RBs), should be 8 after preparing the first 8 RBs (for example), and must - * wrap back to 0 at the end of the circular buffer (but don't wrap before - * "read" idx has advanced past 1! See below). - * NOTE: 4965 EXPECTS THE WRITE IDX TO BE INCREMENTED IN MULTIPLES OF 8. - * - * As the 4965 fills RBs (referenced from contiguous RBDs within the circular - * buffer), it updates the Rx status buffer in host DRAM, 2) described above, - * to tell the driver the idx of the latest filled RBD. The driver must - * read this "read" idx from DRAM after receiving an Rx interrupt from 4965. - * - * The driver must also internally keep track of a third idx, which is the - * next RBD to process. When receiving an Rx interrupt, driver should process - * all filled but unprocessed RBs up to, but not including, the RB - * corresponding to the "read" idx. For example, if "read" idx becomes "1", - * driver may process the RB pointed to by RBD 0. Depending on volume of - * traffic, there may be many RBs to process. - * - * If read idx == write idx, 4965 thinks there is no room to put new data. - * Due to this, the maximum number of filled RBs is 255, instead of 256. To - * be safe, make sure that there is a gap of at least 2 RBDs between "write" - * and "read" idxes; that is, make sure that there are no more than 254 - * buffers waiting to be filled. - */ -#define FH49_MEM_RSCSR_LOWER_BOUND (FH49_MEM_LOWER_BOUND + 0xBC0) -#define FH49_MEM_RSCSR_UPPER_BOUND (FH49_MEM_LOWER_BOUND + 0xC00) -#define FH49_MEM_RSCSR_CHNL0 (FH49_MEM_RSCSR_LOWER_BOUND) - -/** - * Physical base address of 8-byte Rx Status buffer. - * Bit fields: - * 31-0: Rx status buffer physical base address [35:4], must 16-byte aligned. - */ -#define FH49_RSCSR_CHNL0_STTS_WPTR_REG (FH49_MEM_RSCSR_CHNL0) - -/** - * Physical base address of Rx Buffer Descriptor Circular Buffer. - * Bit fields: - * 27-0: RBD CD physical base address [35:8], must be 256-byte aligned. - */ -#define FH49_RSCSR_CHNL0_RBDCB_BASE_REG (FH49_MEM_RSCSR_CHNL0 + 0x004) - -/** - * Rx write pointer (idx, really!). - * Bit fields: - * 11-0: Index of driver's most recent prepared-to-be-filled RBD, + 1. - * NOTE: For 256-entry circular buffer, use only bits [7:0]. - */ -#define FH49_RSCSR_CHNL0_RBDCB_WPTR_REG (FH49_MEM_RSCSR_CHNL0 + 0x008) -#define FH49_RSCSR_CHNL0_WPTR (FH49_RSCSR_CHNL0_RBDCB_WPTR_REG) - -/** - * Rx Config/Status Registers (RCSR) - * Rx Config Reg for channel 0 (only channel used) - * - * Driver must initialize FH49_MEM_RCSR_CHNL0_CONFIG_REG as follows for - * normal operation (see bit fields). - * - * Clearing FH49_MEM_RCSR_CHNL0_CONFIG_REG to 0 turns off Rx DMA. - * Driver should poll FH49_MEM_RSSR_RX_STATUS_REG for - * FH49_RSSR_CHNL0_RX_STATUS_CHNL_IDLE (bit 24) before continuing. - * - * Bit fields: - * 31-30: Rx DMA channel enable: '00' off/pause, '01' pause at end of frame, - * '10' operate normally - * 29-24: reserved - * 23-20: # RBDs in circular buffer = 2^value; use "8" for 256 RBDs (normal), - * min "5" for 32 RBDs, max "12" for 4096 RBDs. - * 19-18: reserved - * 17-16: size of each receive buffer; '00' 4K (normal), '01' 8K, - * '10' 12K, '11' 16K. - * 15-14: reserved - * 13-12: IRQ destination; '00' none, '01' host driver (normal operation) - * 11- 4: timeout for closing Rx buffer and interrupting host (units 32 usec) - * typical value 0x10 (about 1/2 msec) - * 3- 0: reserved - */ -#define FH49_MEM_RCSR_LOWER_BOUND (FH49_MEM_LOWER_BOUND + 0xC00) -#define FH49_MEM_RCSR_UPPER_BOUND (FH49_MEM_LOWER_BOUND + 0xCC0) -#define FH49_MEM_RCSR_CHNL0 (FH49_MEM_RCSR_LOWER_BOUND) - -#define FH49_MEM_RCSR_CHNL0_CONFIG_REG (FH49_MEM_RCSR_CHNL0) - -#define FH49_RCSR_CHNL0_RX_CONFIG_RB_TIMEOUT_MSK (0x00000FF0) /* bits 4-11 */ -#define FH49_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_MSK (0x00001000) /* bits 12 */ -#define FH49_RCSR_CHNL0_RX_CONFIG_SINGLE_FRAME_MSK (0x00008000) /* bit 15 */ -#define FH49_RCSR_CHNL0_RX_CONFIG_RB_SIZE_MSK (0x00030000) /* bits 16-17 */ -#define FH49_RCSR_CHNL0_RX_CONFIG_RBDBC_SIZE_MSK (0x00F00000) /* bits 20-23 */ -#define FH49_RCSR_CHNL0_RX_CONFIG_DMA_CHNL_EN_MSK (0xC0000000) /* bits 30-31 */ - -#define FH49_RCSR_RX_CONFIG_RBDCB_SIZE_POS (20) -#define FH49_RCSR_RX_CONFIG_REG_IRQ_RBTH_POS (4) -#define RX_RB_TIMEOUT (0x10) - -#define FH49_RCSR_RX_CONFIG_CHNL_EN_PAUSE_VAL (0x00000000) -#define FH49_RCSR_RX_CONFIG_CHNL_EN_PAUSE_EOF_VAL (0x40000000) -#define FH49_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL (0x80000000) - -#define FH49_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K (0x00000000) -#define FH49_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K (0x00010000) -#define FH49_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_12K (0x00020000) -#define FH49_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_16K (0x00030000) - -#define FH49_RCSR_CHNL0_RX_IGNORE_RXF_EMPTY (0x00000004) -#define FH49_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_NO_INT_VAL (0x00000000) -#define FH49_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL (0x00001000) - -/** - * Rx Shared Status Registers (RSSR) - * - * After stopping Rx DMA channel (writing 0 to - * FH49_MEM_RCSR_CHNL0_CONFIG_REG), driver must poll - * FH49_MEM_RSSR_RX_STATUS_REG until Rx channel is idle. - * - * Bit fields: - * 24: 1 = Channel 0 is idle - * - * FH49_MEM_RSSR_SHARED_CTRL_REG and FH49_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV - * contain default values that should not be altered by the driver. - */ -#define FH49_MEM_RSSR_LOWER_BOUND (FH49_MEM_LOWER_BOUND + 0xC40) -#define FH49_MEM_RSSR_UPPER_BOUND (FH49_MEM_LOWER_BOUND + 0xD00) - -#define FH49_MEM_RSSR_SHARED_CTRL_REG (FH49_MEM_RSSR_LOWER_BOUND) -#define FH49_MEM_RSSR_RX_STATUS_REG (FH49_MEM_RSSR_LOWER_BOUND + 0x004) -#define FH49_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV\ - (FH49_MEM_RSSR_LOWER_BOUND + 0x008) - -#define FH49_RSSR_CHNL0_RX_STATUS_CHNL_IDLE (0x01000000) - -#define FH49_MEM_TFDIB_REG1_ADDR_BITSHIFT 28 - -/* TFDB Area - TFDs buffer table */ -#define FH49_MEM_TFDIB_DRAM_ADDR_LSB_MSK (0xFFFFFFFF) -#define FH49_TFDIB_LOWER_BOUND (FH49_MEM_LOWER_BOUND + 0x900) -#define FH49_TFDIB_UPPER_BOUND (FH49_MEM_LOWER_BOUND + 0x958) -#define FH49_TFDIB_CTRL0_REG(_chnl) (FH49_TFDIB_LOWER_BOUND + 0x8 * (_chnl)) -#define FH49_TFDIB_CTRL1_REG(_chnl) (FH49_TFDIB_LOWER_BOUND + 0x8 * (_chnl) + 0x4) - -/** - * Transmit DMA Channel Control/Status Registers (TCSR) - * - * 4965 has one configuration register for each of 8 Tx DMA/FIFO channels - * supported in hardware (don't confuse these with the 16 Tx queues in DRAM, - * which feed the DMA/FIFO channels); config regs are separated by 0x20 bytes. - * - * To use a Tx DMA channel, driver must initialize its - * FH49_TCSR_CHNL_TX_CONFIG_REG(chnl) with: - * - * FH49_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE | - * FH49_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL - * - * All other bits should be 0. - * - * Bit fields: - * 31-30: Tx DMA channel enable: '00' off/pause, '01' pause at end of frame, - * '10' operate normally - * 29- 4: Reserved, set to "0" - * 3: Enable internal DMA requests (1, normal operation), disable (0) - * 2- 0: Reserved, set to "0" - */ -#define FH49_TCSR_LOWER_BOUND (FH49_MEM_LOWER_BOUND + 0xD00) -#define FH49_TCSR_UPPER_BOUND (FH49_MEM_LOWER_BOUND + 0xE60) - -/* Find Control/Status reg for given Tx DMA/FIFO channel */ -#define FH49_TCSR_CHNL_NUM (7) -#define FH50_TCSR_CHNL_NUM (8) - -/* TCSR: tx_config register values */ -#define FH49_TCSR_CHNL_TX_CONFIG_REG(_chnl) \ - (FH49_TCSR_LOWER_BOUND + 0x20 * (_chnl)) -#define FH49_TCSR_CHNL_TX_CREDIT_REG(_chnl) \ - (FH49_TCSR_LOWER_BOUND + 0x20 * (_chnl) + 0x4) -#define FH49_TCSR_CHNL_TX_BUF_STS_REG(_chnl) \ - (FH49_TCSR_LOWER_BOUND + 0x20 * (_chnl) + 0x8) - -#define FH49_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF (0x00000000) -#define FH49_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_DRV (0x00000001) - -#define FH49_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_DISABLE (0x00000000) -#define FH49_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE (0x00000008) - -#define FH49_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_NOINT (0x00000000) -#define FH49_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_ENDTFD (0x00100000) -#define FH49_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD (0x00200000) - -#define FH49_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT (0x00000000) -#define FH49_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_ENDTFD (0x00400000) -#define FH49_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_IFTFD (0x00800000) - -#define FH49_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE (0x00000000) -#define FH49_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE_EOF (0x40000000) -#define FH49_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE (0x80000000) - -#define FH49_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_EMPTY (0x00000000) -#define FH49_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_WAIT (0x00002000) -#define FH49_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_VALID (0x00000003) - -#define FH49_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_NUM (20) -#define FH49_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_IDX (12) - -/** - * Tx Shared Status Registers (TSSR) - * - * After stopping Tx DMA channel (writing 0 to - * FH49_TCSR_CHNL_TX_CONFIG_REG(chnl)), driver must poll - * FH49_TSSR_TX_STATUS_REG until selected Tx channel is idle - * (channel's buffers empty | no pending requests). - * - * Bit fields: - * 31-24: 1 = Channel buffers empty (channel 7:0) - * 23-16: 1 = No pending requests (channel 7:0) - */ -#define FH49_TSSR_LOWER_BOUND (FH49_MEM_LOWER_BOUND + 0xEA0) -#define FH49_TSSR_UPPER_BOUND (FH49_MEM_LOWER_BOUND + 0xEC0) - -#define FH49_TSSR_TX_STATUS_REG (FH49_TSSR_LOWER_BOUND + 0x010) - -/** - * Bit fields for TSSR(Tx Shared Status & Control) error status register: - * 31: Indicates an address error when accessed to internal memory - * uCode/driver must write "1" in order to clear this flag - * 30: Indicates that Host did not send the expected number of dwords to FH - * uCode/driver must write "1" in order to clear this flag - * 16-9:Each status bit is for one channel. Indicates that an (Error) ActDMA - * command was received from the scheduler while the TRB was already full - * with previous command - * uCode/driver must write "1" in order to clear this flag - * 7-0: Each status bit indicates a channel's TxCredit error. When an error - * bit is set, it indicates that the FH has received a full indication - * from the RTC TxFIFO and the current value of the TxCredit counter was - * not equal to zero. This mean that the credit mechanism was not - * synchronized to the TxFIFO status - * uCode/driver must write "1" in order to clear this flag - */ -#define FH49_TSSR_TX_ERROR_REG (FH49_TSSR_LOWER_BOUND + 0x018) - -#define FH49_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(_chnl) ((1 << (_chnl)) << 16) - -/* Tx service channels */ -#define FH49_SRVC_CHNL (9) -#define FH49_SRVC_LOWER_BOUND (FH49_MEM_LOWER_BOUND + 0x9C8) -#define FH49_SRVC_UPPER_BOUND (FH49_MEM_LOWER_BOUND + 0x9D0) -#define FH49_SRVC_CHNL_SRAM_ADDR_REG(_chnl) \ - (FH49_SRVC_LOWER_BOUND + ((_chnl) - 9) * 0x4) - -#define FH49_TX_CHICKEN_BITS_REG (FH49_MEM_LOWER_BOUND + 0xE98) -/* Instruct FH to increment the retry count of a packet when - * it is brought from the memory to TX-FIFO - */ -#define FH49_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN (0x00000002) - -/* Keep Warm Size */ -#define IL_KW_SIZE 0x1000 /* 4k */ - -#endif /* __il_4965_h__ */ diff --git a/drivers/net/wireless/iwlegacy/Kconfig b/drivers/net/wireless/iwlegacy/Kconfig deleted file mode 100644 index fb919727b8bb..000000000000 --- a/drivers/net/wireless/iwlegacy/Kconfig +++ /dev/null @@ -1,100 +0,0 @@ -config IWLEGACY - tristate - select FW_LOADER - select NEW_LEDS - select LEDS_CLASS - select LEDS_TRIGGERS - select MAC80211_LEDS - -config IWL4965 - tristate "Intel Wireless WiFi 4965AGN (iwl4965)" - depends on PCI && MAC80211 - select IWLEGACY - ---help--- - This option enables support for - - Select to build the driver supporting the: - - Intel Wireless WiFi Link 4965AGN - - This driver uses the kernel's mac80211 subsystem. - - In order to use this driver, you will need a microcode (uCode) - image for it. You can obtain the microcode from: - - <http://intellinuxwireless.org/>. - - The microcode is typically installed in /lib/firmware. You can - look in the hotplug script /etc/hotplug/firmware.agent to - determine which directory FIRMWARE_DIR is set to when the script - runs. - - If you want to compile the driver as a module ( = code which can be - inserted in and removed from the running kernel whenever you want), - say M here and read <file:Documentation/kbuild/modules.txt>. The - module will be called iwl4965. - -config IWL3945 - tristate "Intel PRO/Wireless 3945ABG/BG Network Connection (iwl3945)" - depends on PCI && MAC80211 - select IWLEGACY - ---help--- - Select to build the driver supporting the: - - Intel PRO/Wireless 3945ABG/BG Network Connection - - This driver uses the kernel's mac80211 subsystem. - - In order to use this driver, you will need a microcode (uCode) - image for it. You can obtain the microcode from: - - <http://intellinuxwireless.org/>. - - The microcode is typically installed in /lib/firmware. You can - look in the hotplug script /etc/hotplug/firmware.agent to - determine which directory FIRMWARE_DIR is set to when the script - runs. - - If you want to compile the driver as a module ( = code which can be - inserted in and removed from the running kernel whenever you want), - say M here and read <file:Documentation/kbuild/modules.txt>. The - module will be called iwl3945. - -menu "iwl3945 / iwl4965 Debugging Options" - depends on IWLEGACY - -config IWLEGACY_DEBUG - bool "Enable full debugging output in iwlegacy (iwl 3945/4965) drivers" - depends on IWLEGACY - ---help--- - This option will enable debug tracing output for the iwlegacy - drivers. - - This will result in the kernel module being ~100k larger. You can - control which debug output is sent to the kernel log by setting the - value in - - /sys/class/net/wlan0/device/debug_level - - This entry will only exist if this option is enabled. - - To set a value, simply echo an 8-byte hex value to the same file: - - % echo 0x43fff > /sys/class/net/wlan0/device/debug_level - - You can find the list of debug mask values in: - drivers/net/wireless/iwlegacy/common.h - - If this is your first time using this driver, you should say Y here - as the debug information can assist others in helping you resolve - any problems you may encounter. - -config IWLEGACY_DEBUGFS - bool "iwlegacy (iwl 3945/4965) debugfs support" - depends on IWLEGACY && MAC80211_DEBUGFS - ---help--- - Enable creation of debugfs files for the iwlegacy drivers. This - is a low-impact option that allows getting insight into the - driver's state at runtime. - -endmenu diff --git a/drivers/net/wireless/iwlegacy/Makefile b/drivers/net/wireless/iwlegacy/Makefile deleted file mode 100644 index c985a01a0731..000000000000 --- a/drivers/net/wireless/iwlegacy/Makefile +++ /dev/null @@ -1,17 +0,0 @@ -obj-$(CONFIG_IWLEGACY) += iwlegacy.o -iwlegacy-objs := common.o -iwlegacy-$(CONFIG_IWLEGACY_DEBUGFS) += debug.o - -iwlegacy-objs += $(iwlegacy-m) - -# 4965 -obj-$(CONFIG_IWL4965) += iwl4965.o -iwl4965-objs := 4965.o 4965-mac.o 4965-rs.o 4965-calib.o -iwl4965-$(CONFIG_IWLEGACY_DEBUGFS) += 4965-debug.o - -# 3945 -obj-$(CONFIG_IWL3945) += iwl3945.o -iwl3945-objs := 3945-mac.o 3945.o 3945-rs.o -iwl3945-$(CONFIG_IWLEGACY_DEBUGFS) += 3945-debug.o - -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/wireless/iwlegacy/commands.h b/drivers/net/wireless/iwlegacy/commands.h deleted file mode 100644 index dd744135c956..000000000000 --- a/drivers/net/wireless/iwlegacy/commands.h +++ /dev/null @@ -1,3370 +0,0 @@ -/****************************************************************************** - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, - * USA - * - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - * BSD LICENSE - * - * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - *****************************************************************************/ - -#ifndef __il_commands_h__ -#define __il_commands_h__ - -#include <linux/ieee80211.h> - -struct il_priv; - -/* uCode version contains 4 values: Major/Minor/API/Serial */ -#define IL_UCODE_MAJOR(ver) (((ver) & 0xFF000000) >> 24) -#define IL_UCODE_MINOR(ver) (((ver) & 0x00FF0000) >> 16) -#define IL_UCODE_API(ver) (((ver) & 0x0000FF00) >> 8) -#define IL_UCODE_SERIAL(ver) ((ver) & 0x000000FF) - -/* Tx rates */ -#define IL_CCK_RATES 4 -#define IL_OFDM_RATES 8 -#define IL_MAX_RATES (IL_CCK_RATES + IL_OFDM_RATES) - -enum { - N_ALIVE = 0x1, - N_ERROR = 0x2, - - /* RXON and QOS commands */ - C_RXON = 0x10, - C_RXON_ASSOC = 0x11, - C_QOS_PARAM = 0x13, - C_RXON_TIMING = 0x14, - - /* Multi-Station support */ - C_ADD_STA = 0x18, - C_REM_STA = 0x19, - - /* Security */ - C_WEPKEY = 0x20, - - /* RX, TX, LEDs */ - N_3945_RX = 0x1b, /* 3945 only */ - C_TX = 0x1c, - C_RATE_SCALE = 0x47, /* 3945 only */ - C_LEDS = 0x48, - C_TX_LINK_QUALITY_CMD = 0x4e, /* for 4965 */ - - /* 802.11h related */ - C_CHANNEL_SWITCH = 0x72, - N_CHANNEL_SWITCH = 0x73, - C_SPECTRUM_MEASUREMENT = 0x74, - N_SPECTRUM_MEASUREMENT = 0x75, - - /* Power Management */ - C_POWER_TBL = 0x77, - N_PM_SLEEP = 0x7A, - N_PM_DEBUG_STATS = 0x7B, - - /* Scan commands and notifications */ - C_SCAN = 0x80, - C_SCAN_ABORT = 0x81, - N_SCAN_START = 0x82, - N_SCAN_RESULTS = 0x83, - N_SCAN_COMPLETE = 0x84, - - /* IBSS/AP commands */ - N_BEACON = 0x90, - C_TX_BEACON = 0x91, - - /* Miscellaneous commands */ - C_TX_PWR_TBL = 0x97, - - /* Bluetooth device coexistence config command */ - C_BT_CONFIG = 0x9b, - - /* Statistics */ - C_STATS = 0x9c, - N_STATS = 0x9d, - - /* RF-KILL commands and notifications */ - N_CARD_STATE = 0xa1, - - /* Missed beacons notification */ - N_MISSED_BEACONS = 0xa2, - - C_CT_KILL_CONFIG = 0xa4, - C_SENSITIVITY = 0xa8, - C_PHY_CALIBRATION = 0xb0, - N_RX_PHY = 0xc0, - N_RX_MPDU = 0xc1, - N_RX = 0xc3, - N_COMPRESSED_BA = 0xc5, - - IL_CN_MAX = 0xff -}; - -/****************************************************************************** - * (0) - * Commonly used structures and definitions: - * Command header, rate_n_flags, txpower - * - *****************************************************************************/ - -/* il_cmd_header flags value */ -#define IL_CMD_FAILED_MSK 0x40 - -#define SEQ_TO_QUEUE(s) (((s) >> 8) & 0x1f) -#define QUEUE_TO_SEQ(q) (((q) & 0x1f) << 8) -#define SEQ_TO_IDX(s) ((s) & 0xff) -#define IDX_TO_SEQ(i) ((i) & 0xff) -#define SEQ_HUGE_FRAME cpu_to_le16(0x4000) -#define SEQ_RX_FRAME cpu_to_le16(0x8000) - -/** - * struct il_cmd_header - * - * This header format appears in the beginning of each command sent from the - * driver, and each response/notification received from uCode. - */ -struct il_cmd_header { - u8 cmd; /* Command ID: C_RXON, etc. */ - u8 flags; /* 0:5 reserved, 6 abort, 7 internal */ - /* - * The driver sets up the sequence number to values of its choosing. - * uCode does not use this value, but passes it back to the driver - * when sending the response to each driver-originated command, so - * the driver can match the response to the command. Since the values - * don't get used by uCode, the driver may set up an arbitrary format. - * - * There is one exception: uCode sets bit 15 when it originates - * the response/notification, i.e. when the response/notification - * is not a direct response to a command sent by the driver. For - * example, uCode issues N_3945_RX when it sends a received frame - * to the driver; it is not a direct response to any driver command. - * - * The Linux driver uses the following format: - * - * 0:7 tfd idx - position within TX queue - * 8:12 TX queue id - * 13 reserved - * 14 huge - driver sets this to indicate command is in the - * 'huge' storage at the end of the command buffers - * 15 unsolicited RX or uCode-originated notification - */ - __le16 sequence; - - /* command or response/notification data follows immediately */ - u8 data[0]; -} __packed; - -/** - * struct il3945_tx_power - * - * Used in C_TX_PWR_TBL, C_SCAN, C_CHANNEL_SWITCH - * - * Each entry contains two values: - * 1) DSP gain (or sometimes called DSP attenuation). This is a fine-grained - * linear value that multiplies the output of the digital signal processor, - * before being sent to the analog radio. - * 2) Radio gain. This sets the analog gain of the radio Tx path. - * It is a coarser setting, and behaves in a logarithmic (dB) fashion. - * - * Driver obtains values from struct il3945_tx_power power_gain_table[][]. - */ -struct il3945_tx_power { - u8 tx_gain; /* gain for analog radio */ - u8 dsp_atten; /* gain for DSP */ -} __packed; - -/** - * struct il3945_power_per_rate - * - * Used in C_TX_PWR_TBL, C_CHANNEL_SWITCH - */ -struct il3945_power_per_rate { - u8 rate; /* plcp */ - struct il3945_tx_power tpc; - u8 reserved; -} __packed; - -/** - * iwl4965 rate_n_flags bit fields - * - * rate_n_flags format is used in following iwl4965 commands: - * N_RX (response only) - * N_RX_MPDU (response only) - * C_TX (both command and response) - * C_TX_LINK_QUALITY_CMD - * - * High-throughput (HT) rate format for bits 7:0 (bit 8 must be "1"): - * 2-0: 0) 6 Mbps - * 1) 12 Mbps - * 2) 18 Mbps - * 3) 24 Mbps - * 4) 36 Mbps - * 5) 48 Mbps - * 6) 54 Mbps - * 7) 60 Mbps - * - * 4-3: 0) Single stream (SISO) - * 1) Dual stream (MIMO) - * 2) Triple stream (MIMO) - * - * 5: Value of 0x20 in bits 7:0 indicates 6 Mbps HT40 duplicate data - * - * Legacy OFDM rate format for bits 7:0 (bit 8 must be "0", bit 9 "0"): - * 3-0: 0xD) 6 Mbps - * 0xF) 9 Mbps - * 0x5) 12 Mbps - * 0x7) 18 Mbps - * 0x9) 24 Mbps - * 0xB) 36 Mbps - * 0x1) 48 Mbps - * 0x3) 54 Mbps - * - * Legacy CCK rate format for bits 7:0 (bit 8 must be "0", bit 9 "1"): - * 6-0: 10) 1 Mbps - * 20) 2 Mbps - * 55) 5.5 Mbps - * 110) 11 Mbps - */ -#define RATE_MCS_CODE_MSK 0x7 -#define RATE_MCS_SPATIAL_POS 3 -#define RATE_MCS_SPATIAL_MSK 0x18 -#define RATE_MCS_HT_DUP_POS 5 -#define RATE_MCS_HT_DUP_MSK 0x20 - -/* Bit 8: (1) HT format, (0) legacy format in bits 7:0 */ -#define RATE_MCS_FLAGS_POS 8 -#define RATE_MCS_HT_POS 8 -#define RATE_MCS_HT_MSK 0x100 - -/* Bit 9: (1) CCK, (0) OFDM. HT (bit 8) must be "0" for this bit to be valid */ -#define RATE_MCS_CCK_POS 9 -#define RATE_MCS_CCK_MSK 0x200 - -/* Bit 10: (1) Use Green Field preamble */ -#define RATE_MCS_GF_POS 10 -#define RATE_MCS_GF_MSK 0x400 - -/* Bit 11: (1) Use 40Mhz HT40 chnl width, (0) use 20 MHz legacy chnl width */ -#define RATE_MCS_HT40_POS 11 -#define RATE_MCS_HT40_MSK 0x800 - -/* Bit 12: (1) Duplicate data on both 20MHz chnls. HT40 (bit 11) must be set. */ -#define RATE_MCS_DUP_POS 12 -#define RATE_MCS_DUP_MSK 0x1000 - -/* Bit 13: (1) Short guard interval (0.4 usec), (0) normal GI (0.8 usec) */ -#define RATE_MCS_SGI_POS 13 -#define RATE_MCS_SGI_MSK 0x2000 - -/** - * rate_n_flags Tx antenna masks - * 4965 has 2 transmitters - * bit14:16 - */ -#define RATE_MCS_ANT_POS 14 -#define RATE_MCS_ANT_A_MSK 0x04000 -#define RATE_MCS_ANT_B_MSK 0x08000 -#define RATE_MCS_ANT_C_MSK 0x10000 -#define RATE_MCS_ANT_AB_MSK (RATE_MCS_ANT_A_MSK | RATE_MCS_ANT_B_MSK) -#define RATE_MCS_ANT_ABC_MSK (RATE_MCS_ANT_AB_MSK | RATE_MCS_ANT_C_MSK) -#define RATE_ANT_NUM 3 - -#define POWER_TBL_NUM_ENTRIES 33 -#define POWER_TBL_NUM_HT_OFDM_ENTRIES 32 -#define POWER_TBL_CCK_ENTRY 32 - -#define IL_PWR_NUM_HT_OFDM_ENTRIES 24 -#define IL_PWR_CCK_ENTRIES 2 - -/** - * union il4965_tx_power_dual_stream - * - * Host format used for C_TX_PWR_TBL, C_CHANNEL_SWITCH - * Use __le32 version (struct tx_power_dual_stream) when building command. - * - * Driver provides radio gain and DSP attenuation settings to device in pairs, - * one value for each transmitter chain. The first value is for transmitter A, - * second for transmitter B. - * - * For SISO bit rates, both values in a pair should be identical. - * For MIMO rates, one value may be different from the other, - * in order to balance the Tx output between the two transmitters. - * - * See more details in doc for TXPOWER in 4965.h. - */ -union il4965_tx_power_dual_stream { - struct { - u8 radio_tx_gain[2]; - u8 dsp_predis_atten[2]; - } s; - u32 dw; -}; - -/** - * struct tx_power_dual_stream - * - * Table entries in C_TX_PWR_TBL, C_CHANNEL_SWITCH - * - * Same format as il_tx_power_dual_stream, but __le32 - */ -struct tx_power_dual_stream { - __le32 dw; -} __packed; - -/** - * struct il4965_tx_power_db - * - * Entire table within C_TX_PWR_TBL, C_CHANNEL_SWITCH - */ -struct il4965_tx_power_db { - struct tx_power_dual_stream power_tbl[POWER_TBL_NUM_ENTRIES]; -} __packed; - -/****************************************************************************** - * (0a) - * Alive and Error Commands & Responses: - * - *****************************************************************************/ - -#define UCODE_VALID_OK cpu_to_le32(0x1) -#define INITIALIZE_SUBTYPE (9) - -/* - * ("Initialize") N_ALIVE = 0x1 (response only, not a command) - * - * uCode issues this "initialize alive" notification once the initialization - * uCode image has completed its work, and is ready to load the runtime image. - * This is the *first* "alive" notification that the driver will receive after - * rebooting uCode; the "initialize" alive is indicated by subtype field == 9. - * - * See comments documenting "BSM" (bootstrap state machine). - * - * For 4965, this notification contains important calibration data for - * calculating txpower settings: - * - * 1) Power supply voltage indication. The voltage sensor outputs higher - * values for lower voltage, and vice verse. - * - * 2) Temperature measurement parameters, for each of two channel widths - * (20 MHz and 40 MHz) supported by the radios. Temperature sensing - * is done via one of the receiver chains, and channel width influences - * the results. - * - * 3) Tx gain compensation to balance 4965's 2 Tx chains for MIMO operation, - * for each of 5 frequency ranges. - */ -struct il_init_alive_resp { - u8 ucode_minor; - u8 ucode_major; - __le16 reserved1; - u8 sw_rev[8]; - u8 ver_type; - u8 ver_subtype; /* "9" for initialize alive */ - __le16 reserved2; - __le32 log_event_table_ptr; - __le32 error_event_table_ptr; - __le32 timestamp; - __le32 is_valid; - - /* calibration values from "initialize" uCode */ - __le32 voltage; /* signed, higher value is lower voltage */ - __le32 therm_r1[2]; /* signed, 1st for normal, 2nd for HT40 */ - __le32 therm_r2[2]; /* signed */ - __le32 therm_r3[2]; /* signed */ - __le32 therm_r4[2]; /* signed */ - __le32 tx_atten[5][2]; /* signed MIMO gain comp, 5 freq groups, - * 2 Tx chains */ -} __packed; - -/** - * N_ALIVE = 0x1 (response only, not a command) - * - * uCode issues this "alive" notification once the runtime image is ready - * to receive commands from the driver. This is the *second* "alive" - * notification that the driver will receive after rebooting uCode; - * this "alive" is indicated by subtype field != 9. - * - * See comments documenting "BSM" (bootstrap state machine). - * - * This response includes two pointers to structures within the device's - * data SRAM (access via HBUS_TARG_MEM_* regs) that are useful for debugging: - * - * 1) log_event_table_ptr indicates base of the event log. This traces - * a 256-entry history of uCode execution within a circular buffer. - * Its header format is: - * - * __le32 log_size; log capacity (in number of entries) - * __le32 type; (1) timestamp with each entry, (0) no timestamp - * __le32 wraps; # times uCode has wrapped to top of circular buffer - * __le32 write_idx; next circular buffer entry that uCode would fill - * - * The header is followed by the circular buffer of log entries. Entries - * with timestamps have the following format: - * - * __le32 event_id; range 0 - 1500 - * __le32 timestamp; low 32 bits of TSF (of network, if associated) - * __le32 data; event_id-specific data value - * - * Entries without timestamps contain only event_id and data. - * - * - * 2) error_event_table_ptr indicates base of the error log. This contains - * information about any uCode error that occurs. For 4965, the format - * of the error log is: - * - * __le32 valid; (nonzero) valid, (0) log is empty - * __le32 error_id; type of error - * __le32 pc; program counter - * __le32 blink1; branch link - * __le32 blink2; branch link - * __le32 ilink1; interrupt link - * __le32 ilink2; interrupt link - * __le32 data1; error-specific data - * __le32 data2; error-specific data - * __le32 line; source code line of error - * __le32 bcon_time; beacon timer - * __le32 tsf_low; network timestamp function timer - * __le32 tsf_hi; network timestamp function timer - * __le32 gp1; GP1 timer register - * __le32 gp2; GP2 timer register - * __le32 gp3; GP3 timer register - * __le32 ucode_ver; uCode version - * __le32 hw_ver; HW Silicon version - * __le32 brd_ver; HW board version - * __le32 log_pc; log program counter - * __le32 frame_ptr; frame pointer - * __le32 stack_ptr; stack pointer - * __le32 hcmd; last host command - * __le32 isr0; isr status register LMPM_NIC_ISR0: rxtx_flag - * __le32 isr1; isr status register LMPM_NIC_ISR1: host_flag - * __le32 isr2; isr status register LMPM_NIC_ISR2: enc_flag - * __le32 isr3; isr status register LMPM_NIC_ISR3: time_flag - * __le32 isr4; isr status register LMPM_NIC_ISR4: wico interrupt - * __le32 isr_pref; isr status register LMPM_NIC_PREF_STAT - * __le32 wait_event; wait event() caller address - * __le32 l2p_control; L2pControlField - * __le32 l2p_duration; L2pDurationField - * __le32 l2p_mhvalid; L2pMhValidBits - * __le32 l2p_addr_match; L2pAddrMatchStat - * __le32 lmpm_pmg_sel; indicate which clocks are turned on (LMPM_PMG_SEL) - * __le32 u_timestamp; indicate when the date and time of the compilation - * __le32 reserved; - * - * The Linux driver can print both logs to the system log when a uCode error - * occurs. - */ -struct il_alive_resp { - u8 ucode_minor; - u8 ucode_major; - __le16 reserved1; - u8 sw_rev[8]; - u8 ver_type; - u8 ver_subtype; /* not "9" for runtime alive */ - __le16 reserved2; - __le32 log_event_table_ptr; /* SRAM address for event log */ - __le32 error_event_table_ptr; /* SRAM address for error log */ - __le32 timestamp; - __le32 is_valid; -} __packed; - -/* - * N_ERROR = 0x2 (response only, not a command) - */ -struct il_error_resp { - __le32 error_type; - u8 cmd_id; - u8 reserved1; - __le16 bad_cmd_seq_num; - __le32 error_info; - __le64 timestamp; -} __packed; - -/****************************************************************************** - * (1) - * RXON Commands & Responses: - * - *****************************************************************************/ - -/* - * Rx config defines & structure - */ -/* rx_config device types */ -enum { - RXON_DEV_TYPE_AP = 1, - RXON_DEV_TYPE_ESS = 3, - RXON_DEV_TYPE_IBSS = 4, - RXON_DEV_TYPE_SNIFFER = 6, -}; - -#define RXON_RX_CHAIN_DRIVER_FORCE_MSK cpu_to_le16(0x1 << 0) -#define RXON_RX_CHAIN_DRIVER_FORCE_POS (0) -#define RXON_RX_CHAIN_VALID_MSK cpu_to_le16(0x7 << 1) -#define RXON_RX_CHAIN_VALID_POS (1) -#define RXON_RX_CHAIN_FORCE_SEL_MSK cpu_to_le16(0x7 << 4) -#define RXON_RX_CHAIN_FORCE_SEL_POS (4) -#define RXON_RX_CHAIN_FORCE_MIMO_SEL_MSK cpu_to_le16(0x7 << 7) -#define RXON_RX_CHAIN_FORCE_MIMO_SEL_POS (7) -#define RXON_RX_CHAIN_CNT_MSK cpu_to_le16(0x3 << 10) -#define RXON_RX_CHAIN_CNT_POS (10) -#define RXON_RX_CHAIN_MIMO_CNT_MSK cpu_to_le16(0x3 << 12) -#define RXON_RX_CHAIN_MIMO_CNT_POS (12) -#define RXON_RX_CHAIN_MIMO_FORCE_MSK cpu_to_le16(0x1 << 14) -#define RXON_RX_CHAIN_MIMO_FORCE_POS (14) - -/* rx_config flags */ -/* band & modulation selection */ -#define RXON_FLG_BAND_24G_MSK cpu_to_le32(1 << 0) -#define RXON_FLG_CCK_MSK cpu_to_le32(1 << 1) -/* auto detection enable */ -#define RXON_FLG_AUTO_DETECT_MSK cpu_to_le32(1 << 2) -/* TGg protection when tx */ -#define RXON_FLG_TGG_PROTECT_MSK cpu_to_le32(1 << 3) -/* cck short slot & preamble */ -#define RXON_FLG_SHORT_SLOT_MSK cpu_to_le32(1 << 4) -#define RXON_FLG_SHORT_PREAMBLE_MSK cpu_to_le32(1 << 5) -/* antenna selection */ -#define RXON_FLG_DIS_DIV_MSK cpu_to_le32(1 << 7) -#define RXON_FLG_ANT_SEL_MSK cpu_to_le32(0x0f00) -#define RXON_FLG_ANT_A_MSK cpu_to_le32(1 << 8) -#define RXON_FLG_ANT_B_MSK cpu_to_le32(1 << 9) -/* radar detection enable */ -#define RXON_FLG_RADAR_DETECT_MSK cpu_to_le32(1 << 12) -#define RXON_FLG_TGJ_NARROW_BAND_MSK cpu_to_le32(1 << 13) -/* rx response to host with 8-byte TSF -* (according to ON_AIR deassertion) */ -#define RXON_FLG_TSF2HOST_MSK cpu_to_le32(1 << 15) - -/* HT flags */ -#define RXON_FLG_CTRL_CHANNEL_LOC_POS (22) -#define RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK cpu_to_le32(0x1 << 22) - -#define RXON_FLG_HT_OPERATING_MODE_POS (23) - -#define RXON_FLG_HT_PROT_MSK cpu_to_le32(0x1 << 23) -#define RXON_FLG_HT40_PROT_MSK cpu_to_le32(0x2 << 23) - -#define RXON_FLG_CHANNEL_MODE_POS (25) -#define RXON_FLG_CHANNEL_MODE_MSK cpu_to_le32(0x3 << 25) - -/* channel mode */ -enum { - CHANNEL_MODE_LEGACY = 0, - CHANNEL_MODE_PURE_40 = 1, - CHANNEL_MODE_MIXED = 2, - CHANNEL_MODE_RESERVED = 3, -}; -#define RXON_FLG_CHANNEL_MODE_LEGACY \ - cpu_to_le32(CHANNEL_MODE_LEGACY << RXON_FLG_CHANNEL_MODE_POS) -#define RXON_FLG_CHANNEL_MODE_PURE_40 \ - cpu_to_le32(CHANNEL_MODE_PURE_40 << RXON_FLG_CHANNEL_MODE_POS) -#define RXON_FLG_CHANNEL_MODE_MIXED \ - cpu_to_le32(CHANNEL_MODE_MIXED << RXON_FLG_CHANNEL_MODE_POS) - -/* CTS to self (if spec allows) flag */ -#define RXON_FLG_SELF_CTS_EN cpu_to_le32(0x1<<30) - -/* rx_config filter flags */ -/* accept all data frames */ -#define RXON_FILTER_PROMISC_MSK cpu_to_le32(1 << 0) -/* pass control & management to host */ -#define RXON_FILTER_CTL2HOST_MSK cpu_to_le32(1 << 1) -/* accept multi-cast */ -#define RXON_FILTER_ACCEPT_GRP_MSK cpu_to_le32(1 << 2) -/* don't decrypt uni-cast frames */ -#define RXON_FILTER_DIS_DECRYPT_MSK cpu_to_le32(1 << 3) -/* don't decrypt multi-cast frames */ -#define RXON_FILTER_DIS_GRP_DECRYPT_MSK cpu_to_le32(1 << 4) -/* STA is associated */ -#define RXON_FILTER_ASSOC_MSK cpu_to_le32(1 << 5) -/* transfer to host non bssid beacons in associated state */ -#define RXON_FILTER_BCON_AWARE_MSK cpu_to_le32(1 << 6) - -/** - * C_RXON = 0x10 (command, has simple generic response) - * - * RXON tunes the radio tuner to a service channel, and sets up a number - * of parameters that are used primarily for Rx, but also for Tx operations. - * - * NOTE: When tuning to a new channel, driver must set the - * RXON_FILTER_ASSOC_MSK to 0. This will clear station-dependent - * info within the device, including the station tables, tx retry - * rate tables, and txpower tables. Driver must build a new station - * table and txpower table before transmitting anything on the RXON - * channel. - * - * NOTE: All RXONs wipe clean the internal txpower table. Driver must - * issue a new C_TX_PWR_TBL after each C_RXON (0x10), - * regardless of whether RXON_FILTER_ASSOC_MSK is set. - */ - -struct il3945_rxon_cmd { - u8 node_addr[6]; - __le16 reserved1; - u8 bssid_addr[6]; - __le16 reserved2; - u8 wlap_bssid_addr[6]; - __le16 reserved3; - u8 dev_type; - u8 air_propagation; - __le16 reserved4; - u8 ofdm_basic_rates; - u8 cck_basic_rates; - __le16 assoc_id; - __le32 flags; - __le32 filter_flags; - __le16 channel; - __le16 reserved5; -} __packed; - -struct il4965_rxon_cmd { - u8 node_addr[6]; - __le16 reserved1; - u8 bssid_addr[6]; - __le16 reserved2; - u8 wlap_bssid_addr[6]; - __le16 reserved3; - u8 dev_type; - u8 air_propagation; - __le16 rx_chain; - u8 ofdm_basic_rates; - u8 cck_basic_rates; - __le16 assoc_id; - __le32 flags; - __le32 filter_flags; - __le16 channel; - u8 ofdm_ht_single_stream_basic_rates; - u8 ofdm_ht_dual_stream_basic_rates; -} __packed; - -/* Create a common rxon cmd which will be typecast into the 3945 or 4965 - * specific rxon cmd, depending on where it is called from. - */ -struct il_rxon_cmd { - u8 node_addr[6]; - __le16 reserved1; - u8 bssid_addr[6]; - __le16 reserved2; - u8 wlap_bssid_addr[6]; - __le16 reserved3; - u8 dev_type; - u8 air_propagation; - __le16 rx_chain; - u8 ofdm_basic_rates; - u8 cck_basic_rates; - __le16 assoc_id; - __le32 flags; - __le32 filter_flags; - __le16 channel; - u8 ofdm_ht_single_stream_basic_rates; - u8 ofdm_ht_dual_stream_basic_rates; - u8 reserved4; - u8 reserved5; -} __packed; - -/* - * C_RXON_ASSOC = 0x11 (command, has simple generic response) - */ -struct il3945_rxon_assoc_cmd { - __le32 flags; - __le32 filter_flags; - u8 ofdm_basic_rates; - u8 cck_basic_rates; - __le16 reserved; -} __packed; - -struct il4965_rxon_assoc_cmd { - __le32 flags; - __le32 filter_flags; - u8 ofdm_basic_rates; - u8 cck_basic_rates; - u8 ofdm_ht_single_stream_basic_rates; - u8 ofdm_ht_dual_stream_basic_rates; - __le16 rx_chain_select_flags; - __le16 reserved; -} __packed; - -#define IL_CONN_MAX_LISTEN_INTERVAL 10 -#define IL_MAX_UCODE_BEACON_INTERVAL 4 /* 4096 */ -#define IL39_MAX_UCODE_BEACON_INTERVAL 1 /* 1024 */ - -/* - * C_RXON_TIMING = 0x14 (command, has simple generic response) - */ -struct il_rxon_time_cmd { - __le64 timestamp; - __le16 beacon_interval; - __le16 atim_win; - __le32 beacon_init_val; - __le16 listen_interval; - u8 dtim_period; - u8 delta_cp_bss_tbtts; -} __packed; - -/* - * C_CHANNEL_SWITCH = 0x72 (command, has simple generic response) - */ -struct il3945_channel_switch_cmd { - u8 band; - u8 expect_beacon; - __le16 channel; - __le32 rxon_flags; - __le32 rxon_filter_flags; - __le32 switch_time; - struct il3945_power_per_rate power[IL_MAX_RATES]; -} __packed; - -struct il4965_channel_switch_cmd { - u8 band; - u8 expect_beacon; - __le16 channel; - __le32 rxon_flags; - __le32 rxon_filter_flags; - __le32 switch_time; - struct il4965_tx_power_db tx_power; -} __packed; - -/* - * N_CHANNEL_SWITCH = 0x73 (notification only, not a command) - */ -struct il_csa_notification { - __le16 band; - __le16 channel; - __le32 status; /* 0 - OK, 1 - fail */ -} __packed; - -/****************************************************************************** - * (2) - * Quality-of-Service (QOS) Commands & Responses: - * - *****************************************************************************/ - -/** - * struct il_ac_qos -- QOS timing params for C_QOS_PARAM - * One for each of 4 EDCA access categories in struct il_qosparam_cmd - * - * @cw_min: Contention win, start value in numbers of slots. - * Should be a power-of-2, minus 1. Device's default is 0x0f. - * @cw_max: Contention win, max value in numbers of slots. - * Should be a power-of-2, minus 1. Device's default is 0x3f. - * @aifsn: Number of slots in Arbitration Interframe Space (before - * performing random backoff timing prior to Tx). Device default 1. - * @edca_txop: Length of Tx opportunity, in uSecs. Device default is 0. - * - * Device will automatically increase contention win by (2*CW) + 1 for each - * transmission retry. Device uses cw_max as a bit mask, ANDed with new CW - * value, to cap the CW value. - */ -struct il_ac_qos { - __le16 cw_min; - __le16 cw_max; - u8 aifsn; - u8 reserved1; - __le16 edca_txop; -} __packed; - -/* QoS flags defines */ -#define QOS_PARAM_FLG_UPDATE_EDCA_MSK cpu_to_le32(0x01) -#define QOS_PARAM_FLG_TGN_MSK cpu_to_le32(0x02) -#define QOS_PARAM_FLG_TXOP_TYPE_MSK cpu_to_le32(0x10) - -/* Number of Access Categories (AC) (EDCA), queues 0..3 */ -#define AC_NUM 4 - -/* - * C_QOS_PARAM = 0x13 (command, has simple generic response) - * - * This command sets up timings for each of the 4 prioritized EDCA Tx FIFOs - * 0: Background, 1: Best Effort, 2: Video, 3: Voice. - */ -struct il_qosparam_cmd { - __le32 qos_flags; - struct il_ac_qos ac[AC_NUM]; -} __packed; - -/****************************************************************************** - * (3) - * Add/Modify Stations Commands & Responses: - * - *****************************************************************************/ -/* - * Multi station support - */ - -/* Special, dedicated locations within device's station table */ -#define IL_AP_ID 0 -#define IL_STA_ID 2 -#define IL3945_BROADCAST_ID 24 -#define IL3945_STATION_COUNT 25 -#define IL4965_BROADCAST_ID 31 -#define IL4965_STATION_COUNT 32 - -#define IL_STATION_COUNT 32 /* MAX(3945,4965) */ -#define IL_INVALID_STATION 255 - -#define STA_FLG_TX_RATE_MSK cpu_to_le32(1 << 2) -#define STA_FLG_PWR_SAVE_MSK cpu_to_le32(1 << 8) -#define STA_FLG_RTS_MIMO_PROT_MSK cpu_to_le32(1 << 17) -#define STA_FLG_AGG_MPDU_8US_MSK cpu_to_le32(1 << 18) -#define STA_FLG_MAX_AGG_SIZE_POS (19) -#define STA_FLG_MAX_AGG_SIZE_MSK cpu_to_le32(3 << 19) -#define STA_FLG_HT40_EN_MSK cpu_to_le32(1 << 21) -#define STA_FLG_MIMO_DIS_MSK cpu_to_le32(1 << 22) -#define STA_FLG_AGG_MPDU_DENSITY_POS (23) -#define STA_FLG_AGG_MPDU_DENSITY_MSK cpu_to_le32(7 << 23) - -/* Use in mode field. 1: modify existing entry, 0: add new station entry */ -#define STA_CONTROL_MODIFY_MSK 0x01 - -/* key flags __le16*/ -#define STA_KEY_FLG_ENCRYPT_MSK cpu_to_le16(0x0007) -#define STA_KEY_FLG_NO_ENC cpu_to_le16(0x0000) -#define STA_KEY_FLG_WEP cpu_to_le16(0x0001) -#define STA_KEY_FLG_CCMP cpu_to_le16(0x0002) -#define STA_KEY_FLG_TKIP cpu_to_le16(0x0003) - -#define STA_KEY_FLG_KEYID_POS 8 -#define STA_KEY_FLG_INVALID cpu_to_le16(0x0800) -/* wep key is either from global key (0) or from station info array (1) */ -#define STA_KEY_FLG_MAP_KEY_MSK cpu_to_le16(0x0008) - -/* wep key in STA: 5-bytes (0) or 13-bytes (1) */ -#define STA_KEY_FLG_KEY_SIZE_MSK cpu_to_le16(0x1000) -#define STA_KEY_MULTICAST_MSK cpu_to_le16(0x4000) -#define STA_KEY_MAX_NUM 8 - -/* Flags indicate whether to modify vs. don't change various station params */ -#define STA_MODIFY_KEY_MASK 0x01 -#define STA_MODIFY_TID_DISABLE_TX 0x02 -#define STA_MODIFY_TX_RATE_MSK 0x04 -#define STA_MODIFY_ADDBA_TID_MSK 0x08 -#define STA_MODIFY_DELBA_TID_MSK 0x10 -#define STA_MODIFY_SLEEP_TX_COUNT_MSK 0x20 - -/* Receiver address (actually, Rx station's idx into station table), - * combined with Traffic ID (QOS priority), in format used by Tx Scheduler */ -#define BUILD_RAxTID(sta_id, tid) (((sta_id) << 4) + (tid)) - -struct il4965_keyinfo { - __le16 key_flags; - u8 tkip_rx_tsc_byte2; /* TSC[2] for key mix ph1 detection */ - u8 reserved1; - __le16 tkip_rx_ttak[5]; /* 10-byte unicast TKIP TTAK */ - u8 key_offset; - u8 reserved2; - u8 key[16]; /* 16-byte unicast decryption key */ -} __packed; - -/** - * struct sta_id_modify - * @addr[ETH_ALEN]: station's MAC address - * @sta_id: idx of station in uCode's station table - * @modify_mask: STA_MODIFY_*, 1: modify, 0: don't change - * - * Driver selects unused table idx when adding new station, - * or the idx to a pre-existing station entry when modifying that station. - * Some idxes have special purposes (IL_AP_ID, idx 0, is for AP). - * - * modify_mask flags select which parameters to modify vs. leave alone. - */ -struct sta_id_modify { - u8 addr[ETH_ALEN]; - __le16 reserved1; - u8 sta_id; - u8 modify_mask; - __le16 reserved2; -} __packed; - -/* - * C_ADD_STA = 0x18 (command) - * - * The device contains an internal table of per-station information, - * with info on security keys, aggregation parameters, and Tx rates for - * initial Tx attempt and any retries (4965 devices uses - * C_TX_LINK_QUALITY_CMD, - * 3945 uses C_RATE_SCALE to set up rate tables). - * - * C_ADD_STA sets up the table entry for one station, either creating - * a new entry, or modifying a pre-existing one. - * - * NOTE: RXON command (without "associated" bit set) wipes the station table - * clean. Moving into RF_KILL state does this also. Driver must set up - * new station table before transmitting anything on the RXON channel - * (except active scans or active measurements; those commands carry - * their own txpower/rate setup data). - * - * When getting started on a new channel, driver must set up the - * IL_BROADCAST_ID entry (last entry in the table). For a client - * station in a BSS, once an AP is selected, driver sets up the AP STA - * in the IL_AP_ID entry (1st entry in the table). BROADCAST and AP - * are all that are needed for a BSS client station. If the device is - * used as AP, or in an IBSS network, driver must set up station table - * entries for all STAs in network, starting with idx IL_STA_ID. - */ - -struct il3945_addsta_cmd { - u8 mode; /* 1: modify existing, 0: add new station */ - u8 reserved[3]; - struct sta_id_modify sta; - struct il4965_keyinfo key; - __le32 station_flags; /* STA_FLG_* */ - __le32 station_flags_msk; /* STA_FLG_* */ - - /* bit field to disable (1) or enable (0) Tx for Traffic ID (TID) - * corresponding to bit (e.g. bit 5 controls TID 5). - * Set modify_mask bit STA_MODIFY_TID_DISABLE_TX to use this field. */ - __le16 tid_disable_tx; - - __le16 rate_n_flags; - - /* TID for which to add block-ack support. - * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */ - u8 add_immediate_ba_tid; - - /* TID for which to remove block-ack support. - * Set modify_mask bit STA_MODIFY_DELBA_TID_MSK to use this field. */ - u8 remove_immediate_ba_tid; - - /* Starting Sequence Number for added block-ack support. - * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */ - __le16 add_immediate_ba_ssn; -} __packed; - -struct il4965_addsta_cmd { - u8 mode; /* 1: modify existing, 0: add new station */ - u8 reserved[3]; - struct sta_id_modify sta; - struct il4965_keyinfo key; - __le32 station_flags; /* STA_FLG_* */ - __le32 station_flags_msk; /* STA_FLG_* */ - - /* bit field to disable (1) or enable (0) Tx for Traffic ID (TID) - * corresponding to bit (e.g. bit 5 controls TID 5). - * Set modify_mask bit STA_MODIFY_TID_DISABLE_TX to use this field. */ - __le16 tid_disable_tx; - - __le16 reserved1; - - /* TID for which to add block-ack support. - * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */ - u8 add_immediate_ba_tid; - - /* TID for which to remove block-ack support. - * Set modify_mask bit STA_MODIFY_DELBA_TID_MSK to use this field. */ - u8 remove_immediate_ba_tid; - - /* Starting Sequence Number for added block-ack support. - * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */ - __le16 add_immediate_ba_ssn; - - /* - * Number of packets OK to transmit to station even though - * it is asleep -- used to synchronise PS-poll and u-APSD - * responses while ucode keeps track of STA sleep state. - */ - __le16 sleep_tx_count; - - __le16 reserved2; -} __packed; - -/* Wrapper struct for 3945 and 4965 addsta_cmd structures */ -struct il_addsta_cmd { - u8 mode; /* 1: modify existing, 0: add new station */ - u8 reserved[3]; - struct sta_id_modify sta; - struct il4965_keyinfo key; - __le32 station_flags; /* STA_FLG_* */ - __le32 station_flags_msk; /* STA_FLG_* */ - - /* bit field to disable (1) or enable (0) Tx for Traffic ID (TID) - * corresponding to bit (e.g. bit 5 controls TID 5). - * Set modify_mask bit STA_MODIFY_TID_DISABLE_TX to use this field. */ - __le16 tid_disable_tx; - - __le16 rate_n_flags; /* 3945 only */ - - /* TID for which to add block-ack support. - * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */ - u8 add_immediate_ba_tid; - - /* TID for which to remove block-ack support. - * Set modify_mask bit STA_MODIFY_DELBA_TID_MSK to use this field. */ - u8 remove_immediate_ba_tid; - - /* Starting Sequence Number for added block-ack support. - * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */ - __le16 add_immediate_ba_ssn; - - /* - * Number of packets OK to transmit to station even though - * it is asleep -- used to synchronise PS-poll and u-APSD - * responses while ucode keeps track of STA sleep state. - */ - __le16 sleep_tx_count; - - __le16 reserved2; -} __packed; - -#define ADD_STA_SUCCESS_MSK 0x1 -#define ADD_STA_NO_ROOM_IN_TBL 0x2 -#define ADD_STA_NO_BLOCK_ACK_RESOURCE 0x4 -#define ADD_STA_MODIFY_NON_EXIST_STA 0x8 -/* - * C_ADD_STA = 0x18 (response) - */ -struct il_add_sta_resp { - u8 status; /* ADD_STA_* */ -} __packed; - -#define REM_STA_SUCCESS_MSK 0x1 -/* - * C_REM_STA = 0x19 (response) - */ -struct il_rem_sta_resp { - u8 status; -} __packed; - -/* - * C_REM_STA = 0x19 (command) - */ -struct il_rem_sta_cmd { - u8 num_sta; /* number of removed stations */ - u8 reserved[3]; - u8 addr[ETH_ALEN]; /* MAC addr of the first station */ - u8 reserved2[2]; -} __packed; - -#define IL_TX_FIFO_BK_MSK cpu_to_le32(BIT(0)) -#define IL_TX_FIFO_BE_MSK cpu_to_le32(BIT(1)) -#define IL_TX_FIFO_VI_MSK cpu_to_le32(BIT(2)) -#define IL_TX_FIFO_VO_MSK cpu_to_le32(BIT(3)) -#define IL_AGG_TX_QUEUE_MSK cpu_to_le32(0xffc00) - -#define IL_DROP_SINGLE 0 -#define IL_DROP_SELECTED 1 -#define IL_DROP_ALL 2 - -/* - * REPLY_WEP_KEY = 0x20 - */ -struct il_wep_key { - u8 key_idx; - u8 key_offset; - u8 reserved1[2]; - u8 key_size; - u8 reserved2[3]; - u8 key[16]; -} __packed; - -struct il_wep_cmd { - u8 num_keys; - u8 global_key_type; - u8 flags; - u8 reserved; - struct il_wep_key key[0]; -} __packed; - -#define WEP_KEY_WEP_TYPE 1 -#define WEP_KEYS_MAX 4 -#define WEP_INVALID_OFFSET 0xff -#define WEP_KEY_LEN_64 5 -#define WEP_KEY_LEN_128 13 - -/****************************************************************************** - * (4) - * Rx Responses: - * - *****************************************************************************/ - -#define RX_RES_STATUS_NO_CRC32_ERROR cpu_to_le32(1 << 0) -#define RX_RES_STATUS_NO_RXE_OVERFLOW cpu_to_le32(1 << 1) - -#define RX_RES_PHY_FLAGS_BAND_24_MSK cpu_to_le16(1 << 0) -#define RX_RES_PHY_FLAGS_MOD_CCK_MSK cpu_to_le16(1 << 1) -#define RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK cpu_to_le16(1 << 2) -#define RX_RES_PHY_FLAGS_NARROW_BAND_MSK cpu_to_le16(1 << 3) -#define RX_RES_PHY_FLAGS_ANTENNA_MSK 0x70 -#define RX_RES_PHY_FLAGS_ANTENNA_POS 4 -#define RX_RES_PHY_FLAGS_AGG_MSK cpu_to_le16(1 << 7) - -#define RX_RES_STATUS_SEC_TYPE_MSK (0x7 << 8) -#define RX_RES_STATUS_SEC_TYPE_NONE (0x0 << 8) -#define RX_RES_STATUS_SEC_TYPE_WEP (0x1 << 8) -#define RX_RES_STATUS_SEC_TYPE_CCMP (0x2 << 8) -#define RX_RES_STATUS_SEC_TYPE_TKIP (0x3 << 8) -#define RX_RES_STATUS_SEC_TYPE_ERR (0x7 << 8) - -#define RX_RES_STATUS_STATION_FOUND (1<<6) -#define RX_RES_STATUS_NO_STATION_INFO_MISMATCH (1<<7) - -#define RX_RES_STATUS_DECRYPT_TYPE_MSK (0x3 << 11) -#define RX_RES_STATUS_NOT_DECRYPT (0x0 << 11) -#define RX_RES_STATUS_DECRYPT_OK (0x3 << 11) -#define RX_RES_STATUS_BAD_ICV_MIC (0x1 << 11) -#define RX_RES_STATUS_BAD_KEY_TTAK (0x2 << 11) - -#define RX_MPDU_RES_STATUS_ICV_OK (0x20) -#define RX_MPDU_RES_STATUS_MIC_OK (0x40) -#define RX_MPDU_RES_STATUS_TTAK_OK (1 << 7) -#define RX_MPDU_RES_STATUS_DEC_DONE_MSK (0x800) - -struct il3945_rx_frame_stats { - u8 phy_count; - u8 id; - u8 rssi; - u8 agc; - __le16 sig_avg; - __le16 noise_diff; - u8 payload[0]; -} __packed; - -struct il3945_rx_frame_hdr { - __le16 channel; - __le16 phy_flags; - u8 reserved1; - u8 rate; - __le16 len; - u8 payload[0]; -} __packed; - -struct il3945_rx_frame_end { - __le32 status; - __le64 timestamp; - __le32 beacon_timestamp; -} __packed; - -/* - * N_3945_RX = 0x1b (response only, not a command) - * - * NOTE: DO NOT dereference from casts to this structure - * It is provided only for calculating minimum data set size. - * The actual offsets of the hdr and end are dynamic based on - * stats.phy_count - */ -struct il3945_rx_frame { - struct il3945_rx_frame_stats stats; - struct il3945_rx_frame_hdr hdr; - struct il3945_rx_frame_end end; -} __packed; - -#define IL39_RX_FRAME_SIZE (4 + sizeof(struct il3945_rx_frame)) - -/* Fixed (non-configurable) rx data from phy */ - -#define IL49_RX_RES_PHY_CNT 14 -#define IL49_RX_PHY_FLAGS_ANTENNAE_OFFSET (4) -#define IL49_RX_PHY_FLAGS_ANTENNAE_MASK (0x70) -#define IL49_AGC_DB_MASK (0x3f80) /* MASK(7,13) */ -#define IL49_AGC_DB_POS (7) -struct il4965_rx_non_cfg_phy { - __le16 ant_selection; /* ant A bit 4, ant B bit 5, ant C bit 6 */ - __le16 agc_info; /* agc code 0:6, agc dB 7:13, reserved 14:15 */ - u8 rssi_info[6]; /* we use even entries, 0/2/4 for A/B/C rssi */ - u8 pad[0]; -} __packed; - -/* - * N_RX = 0xc3 (response only, not a command) - * Used only for legacy (non 11n) frames. - */ -struct il_rx_phy_res { - u8 non_cfg_phy_cnt; /* non configurable DSP phy data byte count */ - u8 cfg_phy_cnt; /* configurable DSP phy data byte count */ - u8 stat_id; /* configurable DSP phy data set ID */ - u8 reserved1; - __le64 timestamp; /* TSF at on air rise */ - __le32 beacon_time_stamp; /* beacon at on-air rise */ - __le16 phy_flags; /* general phy flags: band, modulation, ... */ - __le16 channel; /* channel number */ - u8 non_cfg_phy_buf[32]; /* for various implementations of non_cfg_phy */ - __le32 rate_n_flags; /* RATE_MCS_* */ - __le16 byte_count; /* frame's byte-count */ - __le16 frame_time; /* frame's time on the air */ -} __packed; - -struct il_rx_mpdu_res_start { - __le16 byte_count; - __le16 reserved; -} __packed; - -/****************************************************************************** - * (5) - * Tx Commands & Responses: - * - * Driver must place each C_TX command into one of the prioritized Tx - * queues in host DRAM, shared between driver and device (see comments for - * SCD registers and Tx/Rx Queues). When the device's Tx scheduler and uCode - * are preparing to transmit, the device pulls the Tx command over the PCI - * bus via one of the device's Tx DMA channels, to fill an internal FIFO - * from which data will be transmitted. - * - * uCode handles all timing and protocol related to control frames - * (RTS/CTS/ACK), based on flags in the Tx command. uCode and Tx scheduler - * handle reception of block-acks; uCode updates the host driver via - * N_COMPRESSED_BA. - * - * uCode handles retrying Tx when an ACK is expected but not received. - * This includes trying lower data rates than the one requested in the Tx - * command, as set up by the C_RATE_SCALE (for 3945) or - * C_TX_LINK_QUALITY_CMD (4965). - * - * Driver sets up transmit power for various rates via C_TX_PWR_TBL. - * This command must be executed after every RXON command, before Tx can occur. - *****************************************************************************/ - -/* C_TX Tx flags field */ - -/* - * 1: Use Request-To-Send protocol before this frame. - * Mutually exclusive vs. TX_CMD_FLG_CTS_MSK. - */ -#define TX_CMD_FLG_RTS_MSK cpu_to_le32(1 << 1) - -/* - * 1: Transmit Clear-To-Send to self before this frame. - * Driver should set this for AUTH/DEAUTH/ASSOC-REQ/REASSOC mgmnt frames. - * Mutually exclusive vs. TX_CMD_FLG_RTS_MSK. - */ -#define TX_CMD_FLG_CTS_MSK cpu_to_le32(1 << 2) - -/* 1: Expect ACK from receiving station - * 0: Don't expect ACK (MAC header's duration field s/b 0) - * Set this for unicast frames, but not broadcast/multicast. */ -#define TX_CMD_FLG_ACK_MSK cpu_to_le32(1 << 3) - -/* For 4965 devices: - * 1: Use rate scale table (see C_TX_LINK_QUALITY_CMD). - * Tx command's initial_rate_idx indicates first rate to try; - * uCode walks through table for additional Tx attempts. - * 0: Use Tx rate/MCS from Tx command's rate_n_flags field. - * This rate will be used for all Tx attempts; it will not be scaled. */ -#define TX_CMD_FLG_STA_RATE_MSK cpu_to_le32(1 << 4) - -/* 1: Expect immediate block-ack. - * Set when Txing a block-ack request frame. Also set TX_CMD_FLG_ACK_MSK. */ -#define TX_CMD_FLG_IMM_BA_RSP_MASK cpu_to_le32(1 << 6) - -/* - * 1: Frame requires full Tx-Op protection. - * Set this if either RTS or CTS Tx Flag gets set. - */ -#define TX_CMD_FLG_FULL_TXOP_PROT_MSK cpu_to_le32(1 << 7) - -/* Tx antenna selection field; used only for 3945, reserved (0) for 4965 devices. - * Set field to "0" to allow 3945 uCode to select antenna (normal usage). */ -#define TX_CMD_FLG_ANT_SEL_MSK cpu_to_le32(0xf00) -#define TX_CMD_FLG_ANT_A_MSK cpu_to_le32(1 << 8) -#define TX_CMD_FLG_ANT_B_MSK cpu_to_le32(1 << 9) - -/* 1: uCode overrides sequence control field in MAC header. - * 0: Driver provides sequence control field in MAC header. - * Set this for management frames, non-QOS data frames, non-unicast frames, - * and also in Tx command embedded in C_SCAN for active scans. */ -#define TX_CMD_FLG_SEQ_CTL_MSK cpu_to_le32(1 << 13) - -/* 1: This frame is non-last MPDU; more fragments are coming. - * 0: Last fragment, or not using fragmentation. */ -#define TX_CMD_FLG_MORE_FRAG_MSK cpu_to_le32(1 << 14) - -/* 1: uCode calculates and inserts Timestamp Function (TSF) in outgoing frame. - * 0: No TSF required in outgoing frame. - * Set this for transmitting beacons and probe responses. */ -#define TX_CMD_FLG_TSF_MSK cpu_to_le32(1 << 16) - -/* 1: Driver inserted 2 bytes pad after the MAC header, for (required) dword - * alignment of frame's payload data field. - * 0: No pad - * Set this for MAC headers with 26 or 30 bytes, i.e. those with QOS or ADDR4 - * field (but not both). Driver must align frame data (i.e. data following - * MAC header) to DWORD boundary. */ -#define TX_CMD_FLG_MH_PAD_MSK cpu_to_le32(1 << 20) - -/* accelerate aggregation support - * 0 - no CCMP encryption; 1 - CCMP encryption */ -#define TX_CMD_FLG_AGG_CCMP_MSK cpu_to_le32(1 << 22) - -/* HCCA-AP - disable duration overwriting. */ -#define TX_CMD_FLG_DUR_MSK cpu_to_le32(1 << 25) - -/* - * TX command security control - */ -#define TX_CMD_SEC_WEP 0x01 -#define TX_CMD_SEC_CCM 0x02 -#define TX_CMD_SEC_TKIP 0x03 -#define TX_CMD_SEC_MSK 0x03 -#define TX_CMD_SEC_SHIFT 6 -#define TX_CMD_SEC_KEY128 0x08 - -/* - * C_TX = 0x1c (command) - */ - -struct il3945_tx_cmd { - /* - * MPDU byte count: - * MAC header (24/26/30/32 bytes) + 2 bytes pad if 26/30 header size, - * + 8 byte IV for CCM or TKIP (not used for WEP) - * + Data payload - * + 8-byte MIC (not used for CCM/WEP) - * NOTE: Does not include Tx command bytes, post-MAC pad bytes, - * MIC (CCM) 8 bytes, ICV (WEP/TKIP/CKIP) 4 bytes, CRC 4 bytes.i - * Range: 14-2342 bytes. - */ - __le16 len; - - /* - * MPDU or MSDU byte count for next frame. - * Used for fragmentation and bursting, but not 11n aggregation. - * Same as "len", but for next frame. Set to 0 if not applicable. - */ - __le16 next_frame_len; - - __le32 tx_flags; /* TX_CMD_FLG_* */ - - u8 rate; - - /* Index of recipient station in uCode's station table */ - u8 sta_id; - u8 tid_tspec; - u8 sec_ctl; - u8 key[16]; - union { - u8 byte[8]; - __le16 word[4]; - __le32 dw[2]; - } tkip_mic; - __le32 next_frame_info; - union { - __le32 life_time; - __le32 attempt; - } stop_time; - u8 supp_rates[2]; - u8 rts_retry_limit; /*byte 50 */ - u8 data_retry_limit; /*byte 51 */ - union { - __le16 pm_frame_timeout; - __le16 attempt_duration; - } timeout; - - /* - * Duration of EDCA burst Tx Opportunity, in 32-usec units. - * Set this if txop time is not specified by HCCA protocol (e.g. by AP). - */ - __le16 driver_txop; - - /* - * MAC header goes here, followed by 2 bytes padding if MAC header - * length is 26 or 30 bytes, followed by payload data - */ - u8 payload[0]; - struct ieee80211_hdr hdr[0]; -} __packed; - -/* - * C_TX = 0x1c (response) - */ -struct il3945_tx_resp { - u8 failure_rts; - u8 failure_frame; - u8 bt_kill_count; - u8 rate; - __le32 wireless_media_time; - __le32 status; /* TX status */ -} __packed; - -/* - * 4965 uCode updates these Tx attempt count values in host DRAM. - * Used for managing Tx retries when expecting block-acks. - * Driver should set these fields to 0. - */ -struct il_dram_scratch { - u8 try_cnt; /* Tx attempts */ - u8 bt_kill_cnt; /* Tx attempts blocked by Bluetooth device */ - __le16 reserved; -} __packed; - -struct il_tx_cmd { - /* - * MPDU byte count: - * MAC header (24/26/30/32 bytes) + 2 bytes pad if 26/30 header size, - * + 8 byte IV for CCM or TKIP (not used for WEP) - * + Data payload - * + 8-byte MIC (not used for CCM/WEP) - * NOTE: Does not include Tx command bytes, post-MAC pad bytes, - * MIC (CCM) 8 bytes, ICV (WEP/TKIP/CKIP) 4 bytes, CRC 4 bytes.i - * Range: 14-2342 bytes. - */ - __le16 len; - - /* - * MPDU or MSDU byte count for next frame. - * Used for fragmentation and bursting, but not 11n aggregation. - * Same as "len", but for next frame. Set to 0 if not applicable. - */ - __le16 next_frame_len; - - __le32 tx_flags; /* TX_CMD_FLG_* */ - - /* uCode may modify this field of the Tx command (in host DRAM!). - * Driver must also set dram_lsb_ptr and dram_msb_ptr in this cmd. */ - struct il_dram_scratch scratch; - - /* Rate for *all* Tx attempts, if TX_CMD_FLG_STA_RATE_MSK is cleared. */ - __le32 rate_n_flags; /* RATE_MCS_* */ - - /* Index of destination station in uCode's station table */ - u8 sta_id; - - /* Type of security encryption: CCM or TKIP */ - u8 sec_ctl; /* TX_CMD_SEC_* */ - - /* - * Index into rate table (see C_TX_LINK_QUALITY_CMD) for initial - * Tx attempt, if TX_CMD_FLG_STA_RATE_MSK is set. Normally "0" for - * data frames, this field may be used to selectively reduce initial - * rate (via non-0 value) for special frames (e.g. management), while - * still supporting rate scaling for all frames. - */ - u8 initial_rate_idx; - u8 reserved; - u8 key[16]; - __le16 next_frame_flags; - __le16 reserved2; - union { - __le32 life_time; - __le32 attempt; - } stop_time; - - /* Host DRAM physical address pointer to "scratch" in this command. - * Must be dword aligned. "0" in dram_lsb_ptr disables usage. */ - __le32 dram_lsb_ptr; - u8 dram_msb_ptr; - - u8 rts_retry_limit; /*byte 50 */ - u8 data_retry_limit; /*byte 51 */ - u8 tid_tspec; - union { - __le16 pm_frame_timeout; - __le16 attempt_duration; - } timeout; - - /* - * Duration of EDCA burst Tx Opportunity, in 32-usec units. - * Set this if txop time is not specified by HCCA protocol (e.g. by AP). - */ - __le16 driver_txop; - - /* - * MAC header goes here, followed by 2 bytes padding if MAC header - * length is 26 or 30 bytes, followed by payload data - */ - u8 payload[0]; - struct ieee80211_hdr hdr[0]; -} __packed; - -/* TX command response is sent after *3945* transmission attempts. - * - * NOTES: - * - * TX_STATUS_FAIL_NEXT_FRAG - * - * If the fragment flag in the MAC header for the frame being transmitted - * is set and there is insufficient time to transmit the next frame, the - * TX status will be returned with 'TX_STATUS_FAIL_NEXT_FRAG'. - * - * TX_STATUS_FIFO_UNDERRUN - * - * Indicates the host did not provide bytes to the FIFO fast enough while - * a TX was in progress. - * - * TX_STATUS_FAIL_MGMNT_ABORT - * - * This status is only possible if the ABORT ON MGMT RX parameter was - * set to true with the TX command. - * - * If the MSB of the status parameter is set then an abort sequence is - * required. This sequence consists of the host activating the TX Abort - * control line, and then waiting for the TX Abort command response. This - * indicates that a the device is no longer in a transmit state, and that the - * command FIFO has been cleared. The host must then deactivate the TX Abort - * control line. Receiving is still allowed in this case. - */ -enum { - TX_3945_STATUS_SUCCESS = 0x01, - TX_3945_STATUS_DIRECT_DONE = 0x02, - TX_3945_STATUS_FAIL_SHORT_LIMIT = 0x82, - TX_3945_STATUS_FAIL_LONG_LIMIT = 0x83, - TX_3945_STATUS_FAIL_FIFO_UNDERRUN = 0x84, - TX_3945_STATUS_FAIL_MGMNT_ABORT = 0x85, - TX_3945_STATUS_FAIL_NEXT_FRAG = 0x86, - TX_3945_STATUS_FAIL_LIFE_EXPIRE = 0x87, - TX_3945_STATUS_FAIL_DEST_PS = 0x88, - TX_3945_STATUS_FAIL_ABORTED = 0x89, - TX_3945_STATUS_FAIL_BT_RETRY = 0x8a, - TX_3945_STATUS_FAIL_STA_INVALID = 0x8b, - TX_3945_STATUS_FAIL_FRAG_DROPPED = 0x8c, - TX_3945_STATUS_FAIL_TID_DISABLE = 0x8d, - TX_3945_STATUS_FAIL_FRAME_FLUSHED = 0x8e, - TX_3945_STATUS_FAIL_INSUFFICIENT_CF_POLL = 0x8f, - TX_3945_STATUS_FAIL_TX_LOCKED = 0x90, - TX_3945_STATUS_FAIL_NO_BEACON_ON_RADAR = 0x91, -}; - -/* - * TX command response is sent after *4965* transmission attempts. - * - * both postpone and abort status are expected behavior from uCode. there is - * no special operation required from driver; except for RFKILL_FLUSH, - * which required tx flush host command to flush all the tx frames in queues - */ -enum { - TX_STATUS_SUCCESS = 0x01, - TX_STATUS_DIRECT_DONE = 0x02, - /* postpone TX */ - TX_STATUS_POSTPONE_DELAY = 0x40, - TX_STATUS_POSTPONE_FEW_BYTES = 0x41, - TX_STATUS_POSTPONE_QUIET_PERIOD = 0x43, - TX_STATUS_POSTPONE_CALC_TTAK = 0x44, - /* abort TX */ - TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY = 0x81, - TX_STATUS_FAIL_SHORT_LIMIT = 0x82, - TX_STATUS_FAIL_LONG_LIMIT = 0x83, - TX_STATUS_FAIL_FIFO_UNDERRUN = 0x84, - TX_STATUS_FAIL_DRAIN_FLOW = 0x85, - TX_STATUS_FAIL_RFKILL_FLUSH = 0x86, - TX_STATUS_FAIL_LIFE_EXPIRE = 0x87, - TX_STATUS_FAIL_DEST_PS = 0x88, - TX_STATUS_FAIL_HOST_ABORTED = 0x89, - TX_STATUS_FAIL_BT_RETRY = 0x8a, - TX_STATUS_FAIL_STA_INVALID = 0x8b, - TX_STATUS_FAIL_FRAG_DROPPED = 0x8c, - TX_STATUS_FAIL_TID_DISABLE = 0x8d, - TX_STATUS_FAIL_FIFO_FLUSHED = 0x8e, - TX_STATUS_FAIL_INSUFFICIENT_CF_POLL = 0x8f, - TX_STATUS_FAIL_PASSIVE_NO_RX = 0x90, - TX_STATUS_FAIL_NO_BEACON_ON_RADAR = 0x91, -}; - -#define TX_PACKET_MODE_REGULAR 0x0000 -#define TX_PACKET_MODE_BURST_SEQ 0x0100 -#define TX_PACKET_MODE_BURST_FIRST 0x0200 - -enum { - TX_POWER_PA_NOT_ACTIVE = 0x0, -}; - -enum { - TX_STATUS_MSK = 0x000000ff, /* bits 0:7 */ - TX_STATUS_DELAY_MSK = 0x00000040, - TX_STATUS_ABORT_MSK = 0x00000080, - TX_PACKET_MODE_MSK = 0x0000ff00, /* bits 8:15 */ - TX_FIFO_NUMBER_MSK = 0x00070000, /* bits 16:18 */ - TX_RESERVED = 0x00780000, /* bits 19:22 */ - TX_POWER_PA_DETECT_MSK = 0x7f800000, /* bits 23:30 */ - TX_ABORT_REQUIRED_MSK = 0x80000000, /* bits 31:31 */ -}; - -/* ******************************* - * TX aggregation status - ******************************* */ - -enum { - AGG_TX_STATE_TRANSMITTED = 0x00, - AGG_TX_STATE_UNDERRUN_MSK = 0x01, - AGG_TX_STATE_FEW_BYTES_MSK = 0x04, - AGG_TX_STATE_ABORT_MSK = 0x08, - AGG_TX_STATE_LAST_SENT_TTL_MSK = 0x10, - AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK = 0x20, - AGG_TX_STATE_SCD_QUERY_MSK = 0x80, - AGG_TX_STATE_TEST_BAD_CRC32_MSK = 0x100, - AGG_TX_STATE_RESPONSE_MSK = 0x1ff, - AGG_TX_STATE_DUMP_TX_MSK = 0x200, - AGG_TX_STATE_DELAY_TX_MSK = 0x400 -}; - -#define AGG_TX_STATUS_MSK 0x00000fff /* bits 0:11 */ -#define AGG_TX_TRY_MSK 0x0000f000 /* bits 12:15 */ - -#define AGG_TX_STATE_LAST_SENT_MSK (AGG_TX_STATE_LAST_SENT_TTL_MSK | \ - AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK) - -/* # tx attempts for first frame in aggregation */ -#define AGG_TX_STATE_TRY_CNT_POS 12 -#define AGG_TX_STATE_TRY_CNT_MSK 0xf000 - -/* Command ID and sequence number of Tx command for this frame */ -#define AGG_TX_STATE_SEQ_NUM_POS 16 -#define AGG_TX_STATE_SEQ_NUM_MSK 0xffff0000 - -/* - * C_TX = 0x1c (response) - * - * This response may be in one of two slightly different formats, indicated - * by the frame_count field: - * - * 1) No aggregation (frame_count == 1). This reports Tx results for - * a single frame. Multiple attempts, at various bit rates, may have - * been made for this frame. - * - * 2) Aggregation (frame_count > 1). This reports Tx results for - * 2 or more frames that used block-acknowledge. All frames were - * transmitted at same rate. Rate scaling may have been used if first - * frame in this new agg block failed in previous agg block(s). - * - * Note that, for aggregation, ACK (block-ack) status is not delivered here; - * block-ack has not been received by the time the 4965 device records - * this status. - * This status relates to reasons the tx might have been blocked or aborted - * within the sending station (this 4965 device), rather than whether it was - * received successfully by the destination station. - */ -struct agg_tx_status { - __le16 status; - __le16 sequence; -} __packed; - -struct il4965_tx_resp { - u8 frame_count; /* 1 no aggregation, >1 aggregation */ - u8 bt_kill_count; /* # blocked by bluetooth (unused for agg) */ - u8 failure_rts; /* # failures due to unsuccessful RTS */ - u8 failure_frame; /* # failures due to no ACK (unused for agg) */ - - /* For non-agg: Rate at which frame was successful. - * For agg: Rate at which all frames were transmitted. */ - __le32 rate_n_flags; /* RATE_MCS_* */ - - /* For non-agg: RTS + CTS + frame tx attempts time + ACK. - * For agg: RTS + CTS + aggregation tx time + block-ack time. */ - __le16 wireless_media_time; /* uSecs */ - - __le16 reserved; - __le32 pa_power1; /* RF power amplifier measurement (not used) */ - __le32 pa_power2; - - /* - * For non-agg: frame status TX_STATUS_* - * For agg: status of 1st frame, AGG_TX_STATE_*; other frame status - * fields follow this one, up to frame_count. - * Bit fields: - * 11- 0: AGG_TX_STATE_* status code - * 15-12: Retry count for 1st frame in aggregation (retries - * occur if tx failed for this frame when it was a - * member of a previous aggregation block). If rate - * scaling is used, retry count indicates the rate - * table entry used for all frames in the new agg. - * 31-16: Sequence # for this frame's Tx cmd (not SSN!) - */ - union { - __le32 status; - struct agg_tx_status agg_status[0]; /* for each agg frame */ - } u; -} __packed; - -/* - * N_COMPRESSED_BA = 0xc5 (response only, not a command) - * - * Reports Block-Acknowledge from recipient station - */ -struct il_compressed_ba_resp { - __le32 sta_addr_lo32; - __le16 sta_addr_hi16; - __le16 reserved; - - /* Index of recipient (BA-sending) station in uCode's station table */ - u8 sta_id; - u8 tid; - __le16 seq_ctl; - __le64 bitmap; - __le16 scd_flow; - __le16 scd_ssn; -} __packed; - -/* - * C_TX_PWR_TBL = 0x97 (command, has simple generic response) - * - * See details under "TXPOWER" in 4965.h. - */ - -struct il3945_txpowertable_cmd { - u8 band; /* 0: 5 GHz, 1: 2.4 GHz */ - u8 reserved; - __le16 channel; - struct il3945_power_per_rate power[IL_MAX_RATES]; -} __packed; - -struct il4965_txpowertable_cmd { - u8 band; /* 0: 5 GHz, 1: 2.4 GHz */ - u8 reserved; - __le16 channel; - struct il4965_tx_power_db tx_power; -} __packed; - -/** - * struct il3945_rate_scaling_cmd - Rate Scaling Command & Response - * - * C_RATE_SCALE = 0x47 (command, has simple generic response) - * - * NOTE: The table of rates passed to the uCode via the - * RATE_SCALE command sets up the corresponding order of - * rates used for all related commands, including rate - * masks, etc. - * - * For example, if you set 9MB (PLCP 0x0f) as the first - * rate in the rate table, the bit mask for that rate - * when passed through ofdm_basic_rates on the C_RXON - * command would be bit 0 (1 << 0) - */ -struct il3945_rate_scaling_info { - __le16 rate_n_flags; - u8 try_cnt; - u8 next_rate_idx; -} __packed; - -struct il3945_rate_scaling_cmd { - u8 table_id; - u8 reserved[3]; - struct il3945_rate_scaling_info table[IL_MAX_RATES]; -} __packed; - -/*RS_NEW_API: only TLC_RTS remains and moved to bit 0 */ -#define LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK (1 << 0) - -/* # of EDCA prioritized tx fifos */ -#define LINK_QUAL_AC_NUM AC_NUM - -/* # entries in rate scale table to support Tx retries */ -#define LINK_QUAL_MAX_RETRY_NUM 16 - -/* Tx antenna selection values */ -#define LINK_QUAL_ANT_A_MSK (1 << 0) -#define LINK_QUAL_ANT_B_MSK (1 << 1) -#define LINK_QUAL_ANT_MSK (LINK_QUAL_ANT_A_MSK|LINK_QUAL_ANT_B_MSK) - -/** - * struct il_link_qual_general_params - * - * Used in C_TX_LINK_QUALITY_CMD - */ -struct il_link_qual_general_params { - u8 flags; - - /* No entries at or above this (driver chosen) idx contain MIMO */ - u8 mimo_delimiter; - - /* Best single antenna to use for single stream (legacy, SISO). */ - u8 single_stream_ant_msk; /* LINK_QUAL_ANT_* */ - - /* Best antennas to use for MIMO (unused for 4965, assumes both). */ - u8 dual_stream_ant_msk; /* LINK_QUAL_ANT_* */ - - /* - * If driver needs to use different initial rates for different - * EDCA QOS access categories (as implemented by tx fifos 0-3), - * this table will set that up, by indicating the idxes in the - * rs_table[LINK_QUAL_MAX_RETRY_NUM] rate table at which to start. - * Otherwise, driver should set all entries to 0. - * - * Entry usage: - * 0 = Background, 1 = Best Effort (normal), 2 = Video, 3 = Voice - * TX FIFOs above 3 use same value (typically 0) as TX FIFO 3. - */ - u8 start_rate_idx[LINK_QUAL_AC_NUM]; -} __packed; - -#define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000) /* 4 milliseconds */ -#define LINK_QUAL_AGG_TIME_LIMIT_MAX (8000) -#define LINK_QUAL_AGG_TIME_LIMIT_MIN (100) - -#define LINK_QUAL_AGG_DISABLE_START_DEF (3) -#define LINK_QUAL_AGG_DISABLE_START_MAX (255) -#define LINK_QUAL_AGG_DISABLE_START_MIN (0) - -#define LINK_QUAL_AGG_FRAME_LIMIT_DEF (31) -#define LINK_QUAL_AGG_FRAME_LIMIT_MAX (63) -#define LINK_QUAL_AGG_FRAME_LIMIT_MIN (0) - -/** - * struct il_link_qual_agg_params - * - * Used in C_TX_LINK_QUALITY_CMD - */ -struct il_link_qual_agg_params { - - /* - *Maximum number of uSec in aggregation. - * default set to 4000 (4 milliseconds) if not configured in .cfg - */ - __le16 agg_time_limit; - - /* - * Number of Tx retries allowed for a frame, before that frame will - * no longer be considered for the start of an aggregation sequence - * (scheduler will then try to tx it as single frame). - * Driver should set this to 3. - */ - u8 agg_dis_start_th; - - /* - * Maximum number of frames in aggregation. - * 0 = no limit (default). 1 = no aggregation. - * Other values = max # frames in aggregation. - */ - u8 agg_frame_cnt_limit; - - __le32 reserved; -} __packed; - -/* - * C_TX_LINK_QUALITY_CMD = 0x4e (command, has simple generic response) - * - * For 4965 devices only; 3945 uses C_RATE_SCALE. - * - * Each station in the 4965 device's internal station table has its own table - * of 16 - * Tx rates and modulation modes (e.g. legacy/SISO/MIMO) for retrying Tx when - * an ACK is not received. This command replaces the entire table for - * one station. - * - * NOTE: Station must already be in 4965 device's station table. - * Use C_ADD_STA. - * - * The rate scaling procedures described below work well. Of course, other - * procedures are possible, and may work better for particular environments. - * - * - * FILLING THE RATE TBL - * - * Given a particular initial rate and mode, as determined by the rate - * scaling algorithm described below, the Linux driver uses the following - * formula to fill the rs_table[LINK_QUAL_MAX_RETRY_NUM] rate table in the - * Link Quality command: - * - * - * 1) If using High-throughput (HT) (SISO or MIMO) initial rate: - * a) Use this same initial rate for first 3 entries. - * b) Find next lower available rate using same mode (SISO or MIMO), - * use for next 3 entries. If no lower rate available, switch to - * legacy mode (no HT40 channel, no MIMO, no short guard interval). - * c) If using MIMO, set command's mimo_delimiter to number of entries - * using MIMO (3 or 6). - * d) After trying 2 HT rates, switch to legacy mode (no HT40 channel, - * no MIMO, no short guard interval), at the next lower bit rate - * (e.g. if second HT bit rate was 54, try 48 legacy), and follow - * legacy procedure for remaining table entries. - * - * 2) If using legacy initial rate: - * a) Use the initial rate for only one entry. - * b) For each following entry, reduce the rate to next lower available - * rate, until reaching the lowest available rate. - * c) When reducing rate, also switch antenna selection. - * d) Once lowest available rate is reached, repeat this rate until - * rate table is filled (16 entries), switching antenna each entry. - * - * - * ACCUMULATING HISTORY - * - * The rate scaling algorithm for 4965 devices, as implemented in Linux driver, - * uses two sets of frame Tx success history: One for the current/active - * modulation mode, and one for a speculative/search mode that is being - * attempted. If the speculative mode turns out to be more effective (i.e. - * actual transfer rate is better), then the driver continues to use the - * speculative mode as the new current active mode. - * - * Each history set contains, separately for each possible rate, data for a - * sliding win of the 62 most recent tx attempts at that rate. The data - * includes a shifting bitmap of success(1)/failure(0), and sums of successful - * and attempted frames, from which the driver can additionally calculate a - * success ratio (success / attempted) and number of failures - * (attempted - success), and control the size of the win (attempted). - * The driver uses the bit map to remove successes from the success sum, as - * the oldest tx attempts fall out of the win. - * - * When the 4965 device makes multiple tx attempts for a given frame, each - * attempt might be at a different rate, and have different modulation - * characteristics (e.g. antenna, fat channel, short guard interval), as set - * up in the rate scaling table in the Link Quality command. The driver must - * determine which rate table entry was used for each tx attempt, to determine - * which rate-specific history to update, and record only those attempts that - * match the modulation characteristics of the history set. - * - * When using block-ack (aggregation), all frames are transmitted at the same - * rate, since there is no per-attempt acknowledgment from the destination - * station. The Tx response struct il_tx_resp indicates the Tx rate in - * rate_n_flags field. After receiving a block-ack, the driver can update - * history for the entire block all at once. - * - * - * FINDING BEST STARTING RATE: - * - * When working with a selected initial modulation mode (see below), the - * driver attempts to find a best initial rate. The initial rate is the - * first entry in the Link Quality command's rate table. - * - * 1) Calculate actual throughput (success ratio * expected throughput, see - * table below) for current initial rate. Do this only if enough frames - * have been attempted to make the value meaningful: at least 6 failed - * tx attempts, or at least 8 successes. If not enough, don't try rate - * scaling yet. - * - * 2) Find available rates adjacent to current initial rate. Available means: - * a) supported by hardware && - * b) supported by association && - * c) within any constraints selected by user - * - * 3) Gather measured throughputs for adjacent rates. These might not have - * enough history to calculate a throughput. That's okay, we might try - * using one of them anyway! - * - * 4) Try decreasing rate if, for current rate: - * a) success ratio is < 15% || - * b) lower adjacent rate has better measured throughput || - * c) higher adjacent rate has worse throughput, and lower is unmeasured - * - * As a sanity check, if decrease was determined above, leave rate - * unchanged if: - * a) lower rate unavailable - * b) success ratio at current rate > 85% (very good) - * c) current measured throughput is better than expected throughput - * of lower rate (under perfect 100% tx conditions, see table below) - * - * 5) Try increasing rate if, for current rate: - * a) success ratio is < 15% || - * b) both adjacent rates' throughputs are unmeasured (try it!) || - * b) higher adjacent rate has better measured throughput || - * c) lower adjacent rate has worse throughput, and higher is unmeasured - * - * As a sanity check, if increase was determined above, leave rate - * unchanged if: - * a) success ratio at current rate < 70%. This is not particularly - * good performance; higher rate is sure to have poorer success. - * - * 6) Re-evaluate the rate after each tx frame. If working with block- - * acknowledge, history and stats may be calculated for the entire - * block (including prior history that fits within the history wins), - * before re-evaluation. - * - * FINDING BEST STARTING MODULATION MODE: - * - * After working with a modulation mode for a "while" (and doing rate scaling), - * the driver searches for a new initial mode in an attempt to improve - * throughput. The "while" is measured by numbers of attempted frames: - * - * For legacy mode, search for new mode after: - * 480 successful frames, or 160 failed frames - * For high-throughput modes (SISO or MIMO), search for new mode after: - * 4500 successful frames, or 400 failed frames - * - * Mode switch possibilities are (3 for each mode): - * - * For legacy: - * Change antenna, try SISO (if HT association), try MIMO (if HT association) - * For SISO: - * Change antenna, try MIMO, try shortened guard interval (SGI) - * For MIMO: - * Try SISO antenna A, SISO antenna B, try shortened guard interval (SGI) - * - * When trying a new mode, use the same bit rate as the old/current mode when - * trying antenna switches and shortened guard interval. When switching to - * SISO from MIMO or legacy, or to MIMO from SISO or legacy, use a rate - * for which the expected throughput (under perfect conditions) is about the - * same or slightly better than the actual measured throughput delivered by - * the old/current mode. - * - * Actual throughput can be estimated by multiplying the expected throughput - * by the success ratio (successful / attempted tx frames). Frame size is - * not considered in this calculation; it assumes that frame size will average - * out to be fairly consistent over several samples. The following are - * metric values for expected throughput assuming 100% success ratio. - * Only G band has support for CCK rates: - * - * RATE: 1 2 5 11 6 9 12 18 24 36 48 54 60 - * - * G: 7 13 35 58 40 57 72 98 121 154 177 186 186 - * A: 0 0 0 0 40 57 72 98 121 154 177 186 186 - * SISO 20MHz: 0 0 0 0 42 42 76 102 124 159 183 193 202 - * SGI SISO 20MHz: 0 0 0 0 46 46 82 110 132 168 192 202 211 - * MIMO 20MHz: 0 0 0 0 74 74 123 155 179 214 236 244 251 - * SGI MIMO 20MHz: 0 0 0 0 81 81 131 164 188 222 243 251 257 - * SISO 40MHz: 0 0 0 0 77 77 127 160 184 220 242 250 257 - * SGI SISO 40MHz: 0 0 0 0 83 83 135 169 193 229 250 257 264 - * MIMO 40MHz: 0 0 0 0 123 123 182 214 235 264 279 285 289 - * SGI MIMO 40MHz: 0 0 0 0 131 131 191 222 242 270 284 289 293 - * - * After the new mode has been tried for a short while (minimum of 6 failed - * frames or 8 successful frames), compare success ratio and actual throughput - * estimate of the new mode with the old. If either is better with the new - * mode, continue to use the new mode. - * - * Continue comparing modes until all 3 possibilities have been tried. - * If moving from legacy to HT, try all 3 possibilities from the new HT - * mode. After trying all 3, a best mode is found. Continue to use this mode - * for the longer "while" described above (e.g. 480 successful frames for - * legacy), and then repeat the search process. - * - */ -struct il_link_quality_cmd { - - /* Index of destination/recipient station in uCode's station table */ - u8 sta_id; - u8 reserved1; - __le16 control; /* not used */ - struct il_link_qual_general_params general_params; - struct il_link_qual_agg_params agg_params; - - /* - * Rate info; when using rate-scaling, Tx command's initial_rate_idx - * specifies 1st Tx rate attempted, via idx into this table. - * 4965 devices works its way through table when retrying Tx. - */ - struct { - __le32 rate_n_flags; /* RATE_MCS_*, RATE_* */ - } rs_table[LINK_QUAL_MAX_RETRY_NUM]; - __le32 reserved2; -} __packed; - -/* - * BT configuration enable flags: - * bit 0 - 1: BT channel announcement enabled - * 0: disable - * bit 1 - 1: priority of BT device enabled - * 0: disable - */ -#define BT_COEX_DISABLE (0x0) -#define BT_ENABLE_CHANNEL_ANNOUNCE BIT(0) -#define BT_ENABLE_PRIORITY BIT(1) - -#define BT_COEX_ENABLE (BT_ENABLE_CHANNEL_ANNOUNCE | BT_ENABLE_PRIORITY) - -#define BT_LEAD_TIME_DEF (0x1E) - -#define BT_MAX_KILL_DEF (0x5) - -/* - * C_BT_CONFIG = 0x9b (command, has simple generic response) - * - * 3945 and 4965 devices support hardware handshake with Bluetooth device on - * same platform. Bluetooth device alerts wireless device when it will Tx; - * wireless device can delay or kill its own Tx to accommodate. - */ -struct il_bt_cmd { - u8 flags; - u8 lead_time; - u8 max_kill; - u8 reserved; - __le32 kill_ack_mask; - __le32 kill_cts_mask; -} __packed; - -/****************************************************************************** - * (6) - * Spectrum Management (802.11h) Commands, Responses, Notifications: - * - *****************************************************************************/ - -/* - * Spectrum Management - */ -#define MEASUREMENT_FILTER_FLAG (RXON_FILTER_PROMISC_MSK | \ - RXON_FILTER_CTL2HOST_MSK | \ - RXON_FILTER_ACCEPT_GRP_MSK | \ - RXON_FILTER_DIS_DECRYPT_MSK | \ - RXON_FILTER_DIS_GRP_DECRYPT_MSK | \ - RXON_FILTER_ASSOC_MSK | \ - RXON_FILTER_BCON_AWARE_MSK) - -struct il_measure_channel { - __le32 duration; /* measurement duration in extended beacon - * format */ - u8 channel; /* channel to measure */ - u8 type; /* see enum il_measure_type */ - __le16 reserved; -} __packed; - -/* - * C_SPECTRUM_MEASUREMENT = 0x74 (command) - */ -struct il_spectrum_cmd { - __le16 len; /* number of bytes starting from token */ - u8 token; /* token id */ - u8 id; /* measurement id -- 0 or 1 */ - u8 origin; /* 0 = TGh, 1 = other, 2 = TGk */ - u8 periodic; /* 1 = periodic */ - __le16 path_loss_timeout; - __le32 start_time; /* start time in extended beacon format */ - __le32 reserved2; - __le32 flags; /* rxon flags */ - __le32 filter_flags; /* rxon filter flags */ - __le16 channel_count; /* minimum 1, maximum 10 */ - __le16 reserved3; - struct il_measure_channel channels[10]; -} __packed; - -/* - * C_SPECTRUM_MEASUREMENT = 0x74 (response) - */ -struct il_spectrum_resp { - u8 token; - u8 id; /* id of the prior command replaced, or 0xff */ - __le16 status; /* 0 - command will be handled - * 1 - cannot handle (conflicts with another - * measurement) */ -} __packed; - -enum il_measurement_state { - IL_MEASUREMENT_START = 0, - IL_MEASUREMENT_STOP = 1, -}; - -enum il_measurement_status { - IL_MEASUREMENT_OK = 0, - IL_MEASUREMENT_CONCURRENT = 1, - IL_MEASUREMENT_CSA_CONFLICT = 2, - IL_MEASUREMENT_TGH_CONFLICT = 3, - /* 4-5 reserved */ - IL_MEASUREMENT_STOPPED = 6, - IL_MEASUREMENT_TIMEOUT = 7, - IL_MEASUREMENT_PERIODIC_FAILED = 8, -}; - -#define NUM_ELEMENTS_IN_HISTOGRAM 8 - -struct il_measurement_histogram { - __le32 ofdm[NUM_ELEMENTS_IN_HISTOGRAM]; /* in 0.8usec counts */ - __le32 cck[NUM_ELEMENTS_IN_HISTOGRAM]; /* in 1usec counts */ -} __packed; - -/* clear channel availability counters */ -struct il_measurement_cca_counters { - __le32 ofdm; - __le32 cck; -} __packed; - -enum il_measure_type { - IL_MEASURE_BASIC = (1 << 0), - IL_MEASURE_CHANNEL_LOAD = (1 << 1), - IL_MEASURE_HISTOGRAM_RPI = (1 << 2), - IL_MEASURE_HISTOGRAM_NOISE = (1 << 3), - IL_MEASURE_FRAME = (1 << 4), - /* bits 5:6 are reserved */ - IL_MEASURE_IDLE = (1 << 7), -}; - -/* - * N_SPECTRUM_MEASUREMENT = 0x75 (notification only, not a command) - */ -struct il_spectrum_notification { - u8 id; /* measurement id -- 0 or 1 */ - u8 token; - u8 channel_idx; /* idx in measurement channel list */ - u8 state; /* 0 - start, 1 - stop */ - __le32 start_time; /* lower 32-bits of TSF */ - u8 band; /* 0 - 5.2GHz, 1 - 2.4GHz */ - u8 channel; - u8 type; /* see enum il_measurement_type */ - u8 reserved1; - /* NOTE: cca_ofdm, cca_cck, basic_type, and histogram are only only - * valid if applicable for measurement type requested. */ - __le32 cca_ofdm; /* cca fraction time in 40Mhz clock periods */ - __le32 cca_cck; /* cca fraction time in 44Mhz clock periods */ - __le32 cca_time; /* channel load time in usecs */ - u8 basic_type; /* 0 - bss, 1 - ofdm preamble, 2 - - * unidentified */ - u8 reserved2[3]; - struct il_measurement_histogram histogram; - __le32 stop_time; /* lower 32-bits of TSF */ - __le32 status; /* see il_measurement_status */ -} __packed; - -/****************************************************************************** - * (7) - * Power Management Commands, Responses, Notifications: - * - *****************************************************************************/ - -/** - * struct il_powertable_cmd - Power Table Command - * @flags: See below: - * - * C_POWER_TBL = 0x77 (command, has simple generic response) - * - * PM allow: - * bit 0 - '0' Driver not allow power management - * '1' Driver allow PM (use rest of parameters) - * - * uCode send sleep notifications: - * bit 1 - '0' Don't send sleep notification - * '1' send sleep notification (SEND_PM_NOTIFICATION) - * - * Sleep over DTIM - * bit 2 - '0' PM have to walk up every DTIM - * '1' PM could sleep over DTIM till listen Interval. - * - * PCI power managed - * bit 3 - '0' (PCI_CFG_LINK_CTRL & 0x1) - * '1' !(PCI_CFG_LINK_CTRL & 0x1) - * - * Fast PD - * bit 4 - '1' Put radio to sleep when receiving frame for others - * - * Force sleep Modes - * bit 31/30- '00' use both mac/xtal sleeps - * '01' force Mac sleep - * '10' force xtal sleep - * '11' Illegal set - * - * NOTE: if sleep_interval[SLEEP_INTRVL_TBL_SIZE-1] > DTIM period then - * ucode assume sleep over DTIM is allowed and we don't need to wake up - * for every DTIM. - */ -#define IL_POWER_VEC_SIZE 5 - -#define IL_POWER_DRIVER_ALLOW_SLEEP_MSK cpu_to_le16(BIT(0)) -#define IL_POWER_SLEEP_OVER_DTIM_MSK cpu_to_le16(BIT(2)) -#define IL_POWER_PCI_PM_MSK cpu_to_le16(BIT(3)) - -struct il3945_powertable_cmd { - __le16 flags; - u8 reserved[2]; - __le32 rx_data_timeout; - __le32 tx_data_timeout; - __le32 sleep_interval[IL_POWER_VEC_SIZE]; -} __packed; - -struct il_powertable_cmd { - __le16 flags; - u8 keep_alive_seconds; /* 3945 reserved */ - u8 debug_flags; /* 3945 reserved */ - __le32 rx_data_timeout; - __le32 tx_data_timeout; - __le32 sleep_interval[IL_POWER_VEC_SIZE]; - __le32 keep_alive_beacons; -} __packed; - -/* - * N_PM_SLEEP = 0x7A (notification only, not a command) - * all devices identical. - */ -struct il_sleep_notification { - u8 pm_sleep_mode; - u8 pm_wakeup_src; - __le16 reserved; - __le32 sleep_time; - __le32 tsf_low; - __le32 bcon_timer; -} __packed; - -/* Sleep states. all devices identical. */ -enum { - IL_PM_NO_SLEEP = 0, - IL_PM_SLP_MAC = 1, - IL_PM_SLP_FULL_MAC_UNASSOCIATE = 2, - IL_PM_SLP_FULL_MAC_CARD_STATE = 3, - IL_PM_SLP_PHY = 4, - IL_PM_SLP_REPENT = 5, - IL_PM_WAKEUP_BY_TIMER = 6, - IL_PM_WAKEUP_BY_DRIVER = 7, - IL_PM_WAKEUP_BY_RFKILL = 8, - /* 3 reserved */ - IL_PM_NUM_OF_MODES = 12, -}; - -/* - * N_CARD_STATE = 0xa1 (notification only, not a command) - */ -struct il_card_state_notif { - __le32 flags; -} __packed; - -#define HW_CARD_DISABLED 0x01 -#define SW_CARD_DISABLED 0x02 -#define CT_CARD_DISABLED 0x04 -#define RXON_CARD_DISABLED 0x10 - -struct il_ct_kill_config { - __le32 reserved; - __le32 critical_temperature_M; - __le32 critical_temperature_R; -} __packed; - -/****************************************************************************** - * (8) - * Scan Commands, Responses, Notifications: - * - *****************************************************************************/ - -#define SCAN_CHANNEL_TYPE_PASSIVE cpu_to_le32(0) -#define SCAN_CHANNEL_TYPE_ACTIVE cpu_to_le32(1) - -/** - * struct il_scan_channel - entry in C_SCAN channel table - * - * One for each channel in the scan list. - * Each channel can independently select: - * 1) SSID for directed active scans - * 2) Txpower setting (for rate specified within Tx command) - * 3) How long to stay on-channel (behavior may be modified by quiet_time, - * quiet_plcp_th, good_CRC_th) - * - * To avoid uCode errors, make sure the following are true (see comments - * under struct il_scan_cmd about max_out_time and quiet_time): - * 1) If using passive_dwell (i.e. passive_dwell != 0): - * active_dwell <= passive_dwell (< max_out_time if max_out_time != 0) - * 2) quiet_time <= active_dwell - * 3) If restricting off-channel time (i.e. max_out_time !=0): - * passive_dwell < max_out_time - * active_dwell < max_out_time - */ -struct il3945_scan_channel { - /* - * type is defined as: - * 0:0 1 = active, 0 = passive - * 1:4 SSID direct bit map; if a bit is set, then corresponding - * SSID IE is transmitted in probe request. - * 5:7 reserved - */ - u8 type; - u8 channel; /* band is selected by il3945_scan_cmd "flags" field */ - struct il3945_tx_power tpc; - __le16 active_dwell; /* in 1024-uSec TU (time units), typ 5-50 */ - __le16 passive_dwell; /* in 1024-uSec TU (time units), typ 20-500 */ -} __packed; - -/* set number of direct probes u8 type */ -#define IL39_SCAN_PROBE_MASK(n) ((BIT(n) | (BIT(n) - BIT(1)))) - -struct il_scan_channel { - /* - * type is defined as: - * 0:0 1 = active, 0 = passive - * 1:20 SSID direct bit map; if a bit is set, then corresponding - * SSID IE is transmitted in probe request. - * 21:31 reserved - */ - __le32 type; - __le16 channel; /* band is selected by il_scan_cmd "flags" field */ - u8 tx_gain; /* gain for analog radio */ - u8 dsp_atten; /* gain for DSP */ - __le16 active_dwell; /* in 1024-uSec TU (time units), typ 5-50 */ - __le16 passive_dwell; /* in 1024-uSec TU (time units), typ 20-500 */ -} __packed; - -/* set number of direct probes __le32 type */ -#define IL_SCAN_PROBE_MASK(n) cpu_to_le32((BIT(n) | (BIT(n) - BIT(1)))) - -/** - * struct il_ssid_ie - directed scan network information element - * - * Up to 20 of these may appear in C_SCAN (Note: Only 4 are in - * 3945 SCAN api), selected by "type" bit field in struct il_scan_channel; - * each channel may select different ssids from among the 20 (4) entries. - * SSID IEs get transmitted in reverse order of entry. - */ -struct il_ssid_ie { - u8 id; - u8 len; - u8 ssid[32]; -} __packed; - -#define PROBE_OPTION_MAX_3945 4 -#define PROBE_OPTION_MAX 20 -#define TX_CMD_LIFE_TIME_INFINITE cpu_to_le32(0xFFFFFFFF) -#define IL_GOOD_CRC_TH_DISABLED 0 -#define IL_GOOD_CRC_TH_DEFAULT cpu_to_le16(1) -#define IL_GOOD_CRC_TH_NEVER cpu_to_le16(0xffff) -#define IL_MAX_SCAN_SIZE 1024 -#define IL_MAX_CMD_SIZE 4096 - -/* - * C_SCAN = 0x80 (command) - * - * The hardware scan command is very powerful; the driver can set it up to - * maintain (relatively) normal network traffic while doing a scan in the - * background. The max_out_time and suspend_time control the ratio of how - * long the device stays on an associated network channel ("service channel") - * vs. how long it's away from the service channel, i.e. tuned to other channels - * for scanning. - * - * max_out_time is the max time off-channel (in usec), and suspend_time - * is how long (in "extended beacon" format) that the scan is "suspended" - * after returning to the service channel. That is, suspend_time is the - * time that we stay on the service channel, doing normal work, between - * scan segments. The driver may set these parameters differently to support - * scanning when associated vs. not associated, and light vs. heavy traffic - * loads when associated. - * - * After receiving this command, the device's scan engine does the following; - * - * 1) Sends SCAN_START notification to driver - * 2) Checks to see if it has time to do scan for one channel - * 3) Sends NULL packet, with power-save (PS) bit set to 1, - * to tell AP that we're going off-channel - * 4) Tunes to first channel in scan list, does active or passive scan - * 5) Sends SCAN_RESULT notification to driver - * 6) Checks to see if it has time to do scan on *next* channel in list - * 7) Repeats 4-6 until it no longer has time to scan the next channel - * before max_out_time expires - * 8) Returns to service channel - * 9) Sends NULL packet with PS=0 to tell AP that we're back - * 10) Stays on service channel until suspend_time expires - * 11) Repeats entire process 2-10 until list is complete - * 12) Sends SCAN_COMPLETE notification - * - * For fast, efficient scans, the scan command also has support for staying on - * a channel for just a short time, if doing active scanning and getting no - * responses to the transmitted probe request. This time is controlled by - * quiet_time, and the number of received packets below which a channel is - * considered "quiet" is controlled by quiet_plcp_threshold. - * - * For active scanning on channels that have regulatory restrictions against - * blindly transmitting, the scan can listen before transmitting, to make sure - * that there is already legitimate activity on the channel. If enough - * packets are cleanly received on the channel (controlled by good_CRC_th, - * typical value 1), the scan engine starts transmitting probe requests. - * - * Driver must use separate scan commands for 2.4 vs. 5 GHz bands. - * - * To avoid uCode errors, see timing restrictions described under - * struct il_scan_channel. - */ - -struct il3945_scan_cmd { - __le16 len; - u8 reserved0; - u8 channel_count; /* # channels in channel list */ - __le16 quiet_time; /* dwell only this # millisecs on quiet channel - * (only for active scan) */ - __le16 quiet_plcp_th; /* quiet chnl is < this # pkts (typ. 1) */ - __le16 good_CRC_th; /* passive -> active promotion threshold */ - __le16 reserved1; - __le32 max_out_time; /* max usec to be away from associated (service) - * channel */ - __le32 suspend_time; /* pause scan this long (in "extended beacon - * format") when returning to service channel: - * 3945; 31:24 # beacons, 19:0 additional usec, - * 4965; 31:22 # beacons, 21:0 additional usec. - */ - __le32 flags; /* RXON_FLG_* */ - __le32 filter_flags; /* RXON_FILTER_* */ - - /* For active scans (set to all-0s for passive scans). - * Does not include payload. Must specify Tx rate; no rate scaling. */ - struct il3945_tx_cmd tx_cmd; - - /* For directed active scans (set to all-0s otherwise) */ - struct il_ssid_ie direct_scan[PROBE_OPTION_MAX_3945]; - - /* - * Probe request frame, followed by channel list. - * - * Size of probe request frame is specified by byte count in tx_cmd. - * Channel list follows immediately after probe request frame. - * Number of channels in list is specified by channel_count. - * Each channel in list is of type: - * - * struct il3945_scan_channel channels[0]; - * - * NOTE: Only one band of channels can be scanned per pass. You - * must not mix 2.4GHz channels and 5.2GHz channels, and you must wait - * for one scan to complete (i.e. receive N_SCAN_COMPLETE) - * before requesting another scan. - */ - u8 data[0]; -} __packed; - -struct il_scan_cmd { - __le16 len; - u8 reserved0; - u8 channel_count; /* # channels in channel list */ - __le16 quiet_time; /* dwell only this # millisecs on quiet channel - * (only for active scan) */ - __le16 quiet_plcp_th; /* quiet chnl is < this # pkts (typ. 1) */ - __le16 good_CRC_th; /* passive -> active promotion threshold */ - __le16 rx_chain; /* RXON_RX_CHAIN_* */ - __le32 max_out_time; /* max usec to be away from associated (service) - * channel */ - __le32 suspend_time; /* pause scan this long (in "extended beacon - * format") when returning to service chnl: - * 3945; 31:24 # beacons, 19:0 additional usec, - * 4965; 31:22 # beacons, 21:0 additional usec. - */ - __le32 flags; /* RXON_FLG_* */ - __le32 filter_flags; /* RXON_FILTER_* */ - - /* For active scans (set to all-0s for passive scans). - * Does not include payload. Must specify Tx rate; no rate scaling. */ - struct il_tx_cmd tx_cmd; - - /* For directed active scans (set to all-0s otherwise) */ - struct il_ssid_ie direct_scan[PROBE_OPTION_MAX]; - - /* - * Probe request frame, followed by channel list. - * - * Size of probe request frame is specified by byte count in tx_cmd. - * Channel list follows immediately after probe request frame. - * Number of channels in list is specified by channel_count. - * Each channel in list is of type: - * - * struct il_scan_channel channels[0]; - * - * NOTE: Only one band of channels can be scanned per pass. You - * must not mix 2.4GHz channels and 5.2GHz channels, and you must wait - * for one scan to complete (i.e. receive N_SCAN_COMPLETE) - * before requesting another scan. - */ - u8 data[0]; -} __packed; - -/* Can abort will notify by complete notification with abort status. */ -#define CAN_ABORT_STATUS cpu_to_le32(0x1) -/* complete notification statuses */ -#define ABORT_STATUS 0x2 - -/* - * C_SCAN = 0x80 (response) - */ -struct il_scanreq_notification { - __le32 status; /* 1: okay, 2: cannot fulfill request */ -} __packed; - -/* - * N_SCAN_START = 0x82 (notification only, not a command) - */ -struct il_scanstart_notification { - __le32 tsf_low; - __le32 tsf_high; - __le32 beacon_timer; - u8 channel; - u8 band; - u8 reserved[2]; - __le32 status; -} __packed; - -#define SCAN_OWNER_STATUS 0x1 -#define MEASURE_OWNER_STATUS 0x2 - -#define IL_PROBE_STATUS_OK 0 -#define IL_PROBE_STATUS_TX_FAILED BIT(0) -/* error statuses combined with TX_FAILED */ -#define IL_PROBE_STATUS_FAIL_TTL BIT(1) -#define IL_PROBE_STATUS_FAIL_BT BIT(2) - -#define NUMBER_OF_STATS 1 /* first __le32 is good CRC */ -/* - * N_SCAN_RESULTS = 0x83 (notification only, not a command) - */ -struct il_scanresults_notification { - u8 channel; - u8 band; - u8 probe_status; - u8 num_probe_not_sent; /* not enough time to send */ - __le32 tsf_low; - __le32 tsf_high; - __le32 stats[NUMBER_OF_STATS]; -} __packed; - -/* - * N_SCAN_COMPLETE = 0x84 (notification only, not a command) - */ -struct il_scancomplete_notification { - u8 scanned_channels; - u8 status; - u8 last_channel; - __le32 tsf_low; - __le32 tsf_high; -} __packed; - -/****************************************************************************** - * (9) - * IBSS/AP Commands and Notifications: - * - *****************************************************************************/ - -enum il_ibss_manager { - IL_NOT_IBSS_MANAGER = 0, - IL_IBSS_MANAGER = 1, -}; - -/* - * N_BEACON = 0x90 (notification only, not a command) - */ - -struct il3945_beacon_notif { - struct il3945_tx_resp beacon_notify_hdr; - __le32 low_tsf; - __le32 high_tsf; - __le32 ibss_mgr_status; -} __packed; - -struct il4965_beacon_notif { - struct il4965_tx_resp beacon_notify_hdr; - __le32 low_tsf; - __le32 high_tsf; - __le32 ibss_mgr_status; -} __packed; - -/* - * C_TX_BEACON= 0x91 (command, has simple generic response) - */ - -struct il3945_tx_beacon_cmd { - struct il3945_tx_cmd tx; - __le16 tim_idx; - u8 tim_size; - u8 reserved1; - struct ieee80211_hdr frame[0]; /* beacon frame */ -} __packed; - -struct il_tx_beacon_cmd { - struct il_tx_cmd tx; - __le16 tim_idx; - u8 tim_size; - u8 reserved1; - struct ieee80211_hdr frame[0]; /* beacon frame */ -} __packed; - -/****************************************************************************** - * (10) - * Statistics Commands and Notifications: - * - *****************************************************************************/ - -#define IL_TEMP_CONVERT 260 - -#define SUP_RATE_11A_MAX_NUM_CHANNELS 8 -#define SUP_RATE_11B_MAX_NUM_CHANNELS 4 -#define SUP_RATE_11G_MAX_NUM_CHANNELS 12 - -/* Used for passing to driver number of successes and failures per rate */ -struct rate_histogram { - union { - __le32 a[SUP_RATE_11A_MAX_NUM_CHANNELS]; - __le32 b[SUP_RATE_11B_MAX_NUM_CHANNELS]; - __le32 g[SUP_RATE_11G_MAX_NUM_CHANNELS]; - } success; - union { - __le32 a[SUP_RATE_11A_MAX_NUM_CHANNELS]; - __le32 b[SUP_RATE_11B_MAX_NUM_CHANNELS]; - __le32 g[SUP_RATE_11G_MAX_NUM_CHANNELS]; - } failed; -} __packed; - -/* stats command response */ - -struct iwl39_stats_rx_phy { - __le32 ina_cnt; - __le32 fina_cnt; - __le32 plcp_err; - __le32 crc32_err; - __le32 overrun_err; - __le32 early_overrun_err; - __le32 crc32_good; - __le32 false_alarm_cnt; - __le32 fina_sync_err_cnt; - __le32 sfd_timeout; - __le32 fina_timeout; - __le32 unresponded_rts; - __le32 rxe_frame_limit_overrun; - __le32 sent_ack_cnt; - __le32 sent_cts_cnt; -} __packed; - -struct iwl39_stats_rx_non_phy { - __le32 bogus_cts; /* CTS received when not expecting CTS */ - __le32 bogus_ack; /* ACK received when not expecting ACK */ - __le32 non_bssid_frames; /* number of frames with BSSID that - * doesn't belong to the STA BSSID */ - __le32 filtered_frames; /* count frames that were dumped in the - * filtering process */ - __le32 non_channel_beacons; /* beacons with our bss id but not on - * our serving channel */ -} __packed; - -struct iwl39_stats_rx { - struct iwl39_stats_rx_phy ofdm; - struct iwl39_stats_rx_phy cck; - struct iwl39_stats_rx_non_phy general; -} __packed; - -struct iwl39_stats_tx { - __le32 preamble_cnt; - __le32 rx_detected_cnt; - __le32 bt_prio_defer_cnt; - __le32 bt_prio_kill_cnt; - __le32 few_bytes_cnt; - __le32 cts_timeout; - __le32 ack_timeout; - __le32 expected_ack_cnt; - __le32 actual_ack_cnt; -} __packed; - -struct stats_dbg { - __le32 burst_check; - __le32 burst_count; - __le32 wait_for_silence_timeout_cnt; - __le32 reserved[3]; -} __packed; - -struct iwl39_stats_div { - __le32 tx_on_a; - __le32 tx_on_b; - __le32 exec_time; - __le32 probe_time; -} __packed; - -struct iwl39_stats_general { - __le32 temperature; - struct stats_dbg dbg; - __le32 sleep_time; - __le32 slots_out; - __le32 slots_idle; - __le32 ttl_timestamp; - struct iwl39_stats_div div; -} __packed; - -struct stats_rx_phy { - __le32 ina_cnt; - __le32 fina_cnt; - __le32 plcp_err; - __le32 crc32_err; - __le32 overrun_err; - __le32 early_overrun_err; - __le32 crc32_good; - __le32 false_alarm_cnt; - __le32 fina_sync_err_cnt; - __le32 sfd_timeout; - __le32 fina_timeout; - __le32 unresponded_rts; - __le32 rxe_frame_limit_overrun; - __le32 sent_ack_cnt; - __le32 sent_cts_cnt; - __le32 sent_ba_rsp_cnt; - __le32 dsp_self_kill; - __le32 mh_format_err; - __le32 re_acq_main_rssi_sum; - __le32 reserved3; -} __packed; - -struct stats_rx_ht_phy { - __le32 plcp_err; - __le32 overrun_err; - __le32 early_overrun_err; - __le32 crc32_good; - __le32 crc32_err; - __le32 mh_format_err; - __le32 agg_crc32_good; - __le32 agg_mpdu_cnt; - __le32 agg_cnt; - __le32 unsupport_mcs; -} __packed; - -#define INTERFERENCE_DATA_AVAILABLE cpu_to_le32(1) - -struct stats_rx_non_phy { - __le32 bogus_cts; /* CTS received when not expecting CTS */ - __le32 bogus_ack; /* ACK received when not expecting ACK */ - __le32 non_bssid_frames; /* number of frames with BSSID that - * doesn't belong to the STA BSSID */ - __le32 filtered_frames; /* count frames that were dumped in the - * filtering process */ - __le32 non_channel_beacons; /* beacons with our bss id but not on - * our serving channel */ - __le32 channel_beacons; /* beacons with our bss id and in our - * serving channel */ - __le32 num_missed_bcon; /* number of missed beacons */ - __le32 adc_rx_saturation_time; /* count in 0.8us units the time the - * ADC was in saturation */ - __le32 ina_detection_search_time; /* total time (in 0.8us) searched - * for INA */ - __le32 beacon_silence_rssi_a; /* RSSI silence after beacon frame */ - __le32 beacon_silence_rssi_b; /* RSSI silence after beacon frame */ - __le32 beacon_silence_rssi_c; /* RSSI silence after beacon frame */ - __le32 interference_data_flag; /* flag for interference data - * availability. 1 when data is - * available. */ - __le32 channel_load; /* counts RX Enable time in uSec */ - __le32 dsp_false_alarms; /* DSP false alarm (both OFDM - * and CCK) counter */ - __le32 beacon_rssi_a; - __le32 beacon_rssi_b; - __le32 beacon_rssi_c; - __le32 beacon_energy_a; - __le32 beacon_energy_b; - __le32 beacon_energy_c; -} __packed; - -struct stats_rx { - struct stats_rx_phy ofdm; - struct stats_rx_phy cck; - struct stats_rx_non_phy general; - struct stats_rx_ht_phy ofdm_ht; -} __packed; - -/** - * struct stats_tx_power - current tx power - * - * @ant_a: current tx power on chain a in 1/2 dB step - * @ant_b: current tx power on chain b in 1/2 dB step - * @ant_c: current tx power on chain c in 1/2 dB step - */ -struct stats_tx_power { - u8 ant_a; - u8 ant_b; - u8 ant_c; - u8 reserved; -} __packed; - -struct stats_tx_non_phy_agg { - __le32 ba_timeout; - __le32 ba_reschedule_frames; - __le32 scd_query_agg_frame_cnt; - __le32 scd_query_no_agg; - __le32 scd_query_agg; - __le32 scd_query_mismatch; - __le32 frame_not_ready; - __le32 underrun; - __le32 bt_prio_kill; - __le32 rx_ba_rsp_cnt; -} __packed; - -struct stats_tx { - __le32 preamble_cnt; - __le32 rx_detected_cnt; - __le32 bt_prio_defer_cnt; - __le32 bt_prio_kill_cnt; - __le32 few_bytes_cnt; - __le32 cts_timeout; - __le32 ack_timeout; - __le32 expected_ack_cnt; - __le32 actual_ack_cnt; - __le32 dump_msdu_cnt; - __le32 burst_abort_next_frame_mismatch_cnt; - __le32 burst_abort_missing_next_frame_cnt; - __le32 cts_timeout_collision; - __le32 ack_or_ba_timeout_collision; - struct stats_tx_non_phy_agg agg; - - __le32 reserved1; -} __packed; - -struct stats_div { - __le32 tx_on_a; - __le32 tx_on_b; - __le32 exec_time; - __le32 probe_time; - __le32 reserved1; - __le32 reserved2; -} __packed; - -struct stats_general_common { - __le32 temperature; /* radio temperature */ - struct stats_dbg dbg; - __le32 sleep_time; - __le32 slots_out; - __le32 slots_idle; - __le32 ttl_timestamp; - struct stats_div div; - __le32 rx_enable_counter; - /* - * num_of_sos_states: - * count the number of times we have to re-tune - * in order to get out of bad PHY status - */ - __le32 num_of_sos_states; -} __packed; - -struct stats_general { - struct stats_general_common common; - __le32 reserved2; - __le32 reserved3; -} __packed; - -#define UCODE_STATS_CLEAR_MSK (0x1 << 0) -#define UCODE_STATS_FREQUENCY_MSK (0x1 << 1) -#define UCODE_STATS_NARROW_BAND_MSK (0x1 << 2) - -/* - * C_STATS = 0x9c, - * all devices identical. - * - * This command triggers an immediate response containing uCode stats. - * The response is in the same format as N_STATS 0x9d, below. - * - * If the CLEAR_STATS configuration flag is set, uCode will clear its - * internal copy of the stats (counters) after issuing the response. - * This flag does not affect N_STATSs after beacons (see below). - * - * If the DISABLE_NOTIF configuration flag is set, uCode will not issue - * N_STATSs after received beacons (see below). This flag - * does not affect the response to the C_STATS 0x9c itself. - */ -#define IL_STATS_CONF_CLEAR_STATS cpu_to_le32(0x1) /* see above */ -#define IL_STATS_CONF_DISABLE_NOTIF cpu_to_le32(0x2) /* see above */ -struct il_stats_cmd { - __le32 configuration_flags; /* IL_STATS_CONF_* */ -} __packed; - -/* - * N_STATS = 0x9d (notification only, not a command) - * - * By default, uCode issues this notification after receiving a beacon - * while associated. To disable this behavior, set DISABLE_NOTIF flag in the - * C_STATS 0x9c, above. - * - * Statistics counters continue to increment beacon after beacon, but are - * cleared when changing channels or when driver issues C_STATS - * 0x9c with CLEAR_STATS bit set (see above). - * - * uCode also issues this notification during scans. uCode clears stats - * appropriately so that each notification contains stats for only the - * one channel that has just been scanned. - */ -#define STATS_REPLY_FLG_BAND_24G_MSK cpu_to_le32(0x2) -#define STATS_REPLY_FLG_HT40_MODE_MSK cpu_to_le32(0x8) - -struct il3945_notif_stats { - __le32 flag; - struct iwl39_stats_rx rx; - struct iwl39_stats_tx tx; - struct iwl39_stats_general general; -} __packed; - -struct il_notif_stats { - __le32 flag; - struct stats_rx rx; - struct stats_tx tx; - struct stats_general general; -} __packed; - -/* - * N_MISSED_BEACONS = 0xa2 (notification only, not a command) - * - * uCode send N_MISSED_BEACONS to driver when detect beacon missed - * in regardless of how many missed beacons, which mean when driver receive the - * notification, inside the command, it can find all the beacons information - * which include number of total missed beacons, number of consecutive missed - * beacons, number of beacons received and number of beacons expected to - * receive. - * - * If uCode detected consecutive_missed_beacons > 5, it will reset the radio - * in order to bring the radio/PHY back to working state; which has no relation - * to when driver will perform sensitivity calibration. - * - * Driver should set it own missed_beacon_threshold to decide when to perform - * sensitivity calibration based on number of consecutive missed beacons in - * order to improve overall performance, especially in noisy environment. - * - */ - -#define IL_MISSED_BEACON_THRESHOLD_MIN (1) -#define IL_MISSED_BEACON_THRESHOLD_DEF (5) -#define IL_MISSED_BEACON_THRESHOLD_MAX IL_MISSED_BEACON_THRESHOLD_DEF - -struct il_missed_beacon_notif { - __le32 consecutive_missed_beacons; - __le32 total_missed_becons; - __le32 num_expected_beacons; - __le32 num_recvd_beacons; -} __packed; - -/****************************************************************************** - * (11) - * Rx Calibration Commands: - * - * With the uCode used for open source drivers, most Tx calibration (except - * for Tx Power) and most Rx calibration is done by uCode during the - * "initialize" phase of uCode boot. Driver must calibrate only: - * - * 1) Tx power (depends on temperature), described elsewhere - * 2) Receiver gain balance (optimize MIMO, and detect disconnected antennas) - * 3) Receiver sensitivity (to optimize signal detection) - * - *****************************************************************************/ - -/** - * C_SENSITIVITY = 0xa8 (command, has simple generic response) - * - * This command sets up the Rx signal detector for a sensitivity level that - * is high enough to lock onto all signals within the associated network, - * but low enough to ignore signals that are below a certain threshold, so as - * not to have too many "false alarms". False alarms are signals that the - * Rx DSP tries to lock onto, but then discards after determining that they - * are noise. - * - * The optimum number of false alarms is between 5 and 50 per 200 TUs - * (200 * 1024 uSecs, i.e. 204.8 milliseconds) of actual Rx time (i.e. - * time listening, not transmitting). Driver must adjust sensitivity so that - * the ratio of actual false alarms to actual Rx time falls within this range. - * - * While associated, uCode delivers N_STATSs after each - * received beacon. These provide information to the driver to analyze the - * sensitivity. Don't analyze stats that come in from scanning, or any - * other non-associated-network source. Pertinent stats include: - * - * From "general" stats (struct stats_rx_non_phy): - * - * (beacon_energy_[abc] & 0x0FF00) >> 8 (unsigned, higher value is lower level) - * Measure of energy of desired signal. Used for establishing a level - * below which the device does not detect signals. - * - * (beacon_silence_rssi_[abc] & 0x0FF00) >> 8 (unsigned, units in dB) - * Measure of background noise in silent period after beacon. - * - * channel_load - * uSecs of actual Rx time during beacon period (varies according to - * how much time was spent transmitting). - * - * From "cck" and "ofdm" stats (struct stats_rx_phy), separately: - * - * false_alarm_cnt - * Signal locks abandoned early (before phy-level header). - * - * plcp_err - * Signal locks abandoned late (during phy-level header). - * - * NOTE: Both false_alarm_cnt and plcp_err increment monotonically from - * beacon to beacon, i.e. each value is an accumulation of all errors - * before and including the latest beacon. Values will wrap around to 0 - * after counting up to 2^32 - 1. Driver must differentiate vs. - * previous beacon's values to determine # false alarms in the current - * beacon period. - * - * Total number of false alarms = false_alarms + plcp_errs - * - * For OFDM, adjust the following table entries in struct il_sensitivity_cmd - * (notice that the start points for OFDM are at or close to settings for - * maximum sensitivity): - * - * START / MIN / MAX - * HD_AUTO_CORR32_X1_TH_ADD_MIN_IDX 90 / 85 / 120 - * HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_IDX 170 / 170 / 210 - * HD_AUTO_CORR32_X4_TH_ADD_MIN_IDX 105 / 105 / 140 - * HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_IDX 220 / 220 / 270 - * - * If actual rate of OFDM false alarms (+ plcp_errors) is too high - * (greater than 50 for each 204.8 msecs listening), reduce sensitivity - * by *adding* 1 to all 4 of the table entries above, up to the max for - * each entry. Conversely, if false alarm rate is too low (less than 5 - * for each 204.8 msecs listening), *subtract* 1 from each entry to - * increase sensitivity. - * - * For CCK sensitivity, keep track of the following: - * - * 1). 20-beacon history of maximum background noise, indicated by - * (beacon_silence_rssi_[abc] & 0x0FF00), units in dB, across the - * 3 receivers. For any given beacon, the "silence reference" is - * the maximum of last 60 samples (20 beacons * 3 receivers). - * - * 2). 10-beacon history of strongest signal level, as indicated - * by (beacon_energy_[abc] & 0x0FF00) >> 8, across the 3 receivers, - * i.e. the strength of the signal through the best receiver at the - * moment. These measurements are "upside down", with lower values - * for stronger signals, so max energy will be *minimum* value. - * - * Then for any given beacon, the driver must determine the *weakest* - * of the strongest signals; this is the minimum level that needs to be - * successfully detected, when using the best receiver at the moment. - * "Max cck energy" is the maximum (higher value means lower energy!) - * of the last 10 minima. Once this is determined, driver must add - * a little margin by adding "6" to it. - * - * 3). Number of consecutive beacon periods with too few false alarms. - * Reset this to 0 at the first beacon period that falls within the - * "good" range (5 to 50 false alarms per 204.8 milliseconds rx). - * - * Then, adjust the following CCK table entries in struct il_sensitivity_cmd - * (notice that the start points for CCK are at maximum sensitivity): - * - * START / MIN / MAX - * HD_AUTO_CORR40_X4_TH_ADD_MIN_IDX 125 / 125 / 200 - * HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_IDX 200 / 200 / 400 - * HD_MIN_ENERGY_CCK_DET_IDX 100 / 0 / 100 - * - * If actual rate of CCK false alarms (+ plcp_errors) is too high - * (greater than 50 for each 204.8 msecs listening), method for reducing - * sensitivity is: - * - * 1) *Add* 3 to value in HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_IDX, - * up to max 400. - * - * 2) If current value in HD_AUTO_CORR40_X4_TH_ADD_MIN_IDX is < 160, - * sensitivity has been reduced a significant amount; bring it up to - * a moderate 161. Otherwise, *add* 3, up to max 200. - * - * 3) a) If current value in HD_AUTO_CORR40_X4_TH_ADD_MIN_IDX is > 160, - * sensitivity has been reduced only a moderate or small amount; - * *subtract* 2 from value in HD_MIN_ENERGY_CCK_DET_IDX, - * down to min 0. Otherwise (if gain has been significantly reduced), - * don't change the HD_MIN_ENERGY_CCK_DET_IDX value. - * - * b) Save a snapshot of the "silence reference". - * - * If actual rate of CCK false alarms (+ plcp_errors) is too low - * (less than 5 for each 204.8 msecs listening), method for increasing - * sensitivity is used only if: - * - * 1a) Previous beacon did not have too many false alarms - * 1b) AND difference between previous "silence reference" and current - * "silence reference" (prev - current) is 2 or more, - * OR 2) 100 or more consecutive beacon periods have had rate of - * less than 5 false alarms per 204.8 milliseconds rx time. - * - * Method for increasing sensitivity: - * - * 1) *Subtract* 3 from value in HD_AUTO_CORR40_X4_TH_ADD_MIN_IDX, - * down to min 125. - * - * 2) *Subtract* 3 from value in HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_IDX, - * down to min 200. - * - * 3) *Add* 2 to value in HD_MIN_ENERGY_CCK_DET_IDX, up to max 100. - * - * If actual rate of CCK false alarms (+ plcp_errors) is within good range - * (between 5 and 50 for each 204.8 msecs listening): - * - * 1) Save a snapshot of the silence reference. - * - * 2) If previous beacon had too many CCK false alarms (+ plcp_errors), - * give some extra margin to energy threshold by *subtracting* 8 - * from value in HD_MIN_ENERGY_CCK_DET_IDX. - * - * For all cases (too few, too many, good range), make sure that the CCK - * detection threshold (energy) is below the energy level for robust - * detection over the past 10 beacon periods, the "Max cck energy". - * Lower values mean higher energy; this means making sure that the value - * in HD_MIN_ENERGY_CCK_DET_IDX is at or *above* "Max cck energy". - * - */ - -/* - * Table entries in C_SENSITIVITY (struct il_sensitivity_cmd) - */ -#define HD_TBL_SIZE (11) /* number of entries */ -#define HD_MIN_ENERGY_CCK_DET_IDX (0) /* table idxes */ -#define HD_MIN_ENERGY_OFDM_DET_IDX (1) -#define HD_AUTO_CORR32_X1_TH_ADD_MIN_IDX (2) -#define HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_IDX (3) -#define HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_IDX (4) -#define HD_AUTO_CORR32_X4_TH_ADD_MIN_IDX (5) -#define HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_IDX (6) -#define HD_BARKER_CORR_TH_ADD_MIN_IDX (7) -#define HD_BARKER_CORR_TH_ADD_MIN_MRC_IDX (8) -#define HD_AUTO_CORR40_X4_TH_ADD_MIN_IDX (9) -#define HD_OFDM_ENERGY_TH_IN_IDX (10) - -/* Control field in struct il_sensitivity_cmd */ -#define C_SENSITIVITY_CONTROL_DEFAULT_TBL cpu_to_le16(0) -#define C_SENSITIVITY_CONTROL_WORK_TBL cpu_to_le16(1) - -/** - * struct il_sensitivity_cmd - * @control: (1) updates working table, (0) updates default table - * @table: energy threshold values, use HD_* as idx into table - * - * Always use "1" in "control" to update uCode's working table and DSP. - */ -struct il_sensitivity_cmd { - __le16 control; /* always use "1" */ - __le16 table[HD_TBL_SIZE]; /* use HD_* as idx */ -} __packed; - -/** - * C_PHY_CALIBRATION = 0xb0 (command, has simple generic response) - * - * This command sets the relative gains of 4965 device's 3 radio receiver chains. - * - * After the first association, driver should accumulate signal and noise - * stats from the N_STATSs that follow the first 20 - * beacons from the associated network (don't collect stats that come - * in from scanning, or any other non-network source). - * - * DISCONNECTED ANTENNA: - * - * Driver should determine which antennas are actually connected, by comparing - * average beacon signal levels for the 3 Rx chains. Accumulate (add) the - * following values over 20 beacons, one accumulator for each of the chains - * a/b/c, from struct stats_rx_non_phy: - * - * beacon_rssi_[abc] & 0x0FF (unsigned, units in dB) - * - * Find the strongest signal from among a/b/c. Compare the other two to the - * strongest. If any signal is more than 15 dB (times 20, unless you - * divide the accumulated values by 20) below the strongest, the driver - * considers that antenna to be disconnected, and should not try to use that - * antenna/chain for Rx or Tx. If both A and B seem to be disconnected, - * driver should declare the stronger one as connected, and attempt to use it - * (A and B are the only 2 Tx chains!). - * - * - * RX BALANCE: - * - * Driver should balance the 3 receivers (but just the ones that are connected - * to antennas, see above) for gain, by comparing the average signal levels - * detected during the silence after each beacon (background noise). - * Accumulate (add) the following values over 20 beacons, one accumulator for - * each of the chains a/b/c, from struct stats_rx_non_phy: - * - * beacon_silence_rssi_[abc] & 0x0FF (unsigned, units in dB) - * - * Find the weakest background noise level from among a/b/c. This Rx chain - * will be the reference, with 0 gain adjustment. Attenuate other channels by - * finding noise difference: - * - * (accum_noise[i] - accum_noise[reference]) / 30 - * - * The "30" adjusts the dB in the 20 accumulated samples to units of 1.5 dB. - * For use in diff_gain_[abc] fields of struct il_calibration_cmd, the - * driver should limit the difference results to a range of 0-3 (0-4.5 dB), - * and set bit 2 to indicate "reduce gain". The value for the reference - * (weakest) chain should be "0". - * - * diff_gain_[abc] bit fields: - * 2: (1) reduce gain, (0) increase gain - * 1-0: amount of gain, units of 1.5 dB - */ - -/* Phy calibration command for series */ -/* The default calibrate table size if not specified by firmware */ -#define IL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE 18 -enum { - IL_PHY_CALIBRATE_DIFF_GAIN_CMD = 7, - IL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE = 19, -}; - -#define IL_MAX_PHY_CALIBRATE_TBL_SIZE (253) - -struct il_calib_hdr { - u8 op_code; - u8 first_group; - u8 groups_num; - u8 data_valid; -} __packed; - -/* IL_PHY_CALIBRATE_DIFF_GAIN_CMD (7) */ -struct il_calib_diff_gain_cmd { - struct il_calib_hdr hdr; - s8 diff_gain_a; /* see above */ - s8 diff_gain_b; - s8 diff_gain_c; - u8 reserved1; -} __packed; - -/****************************************************************************** - * (12) - * Miscellaneous Commands: - * - *****************************************************************************/ - -/* - * LEDs Command & Response - * C_LEDS = 0x48 (command, has simple generic response) - * - * For each of 3 possible LEDs (Activity/Link/Tech, selected by "id" field), - * this command turns it on or off, or sets up a periodic blinking cycle. - */ -struct il_led_cmd { - __le32 interval; /* "interval" in uSec */ - u8 id; /* 1: Activity, 2: Link, 3: Tech */ - u8 off; /* # intervals off while blinking; - * "0", with >0 "on" value, turns LED on */ - u8 on; /* # intervals on while blinking; - * "0", regardless of "off", turns LED off */ - u8 reserved; -} __packed; - -/****************************************************************************** - * (13) - * Union of all expected notifications/responses: - * - *****************************************************************************/ - -#define IL_RX_FRAME_SIZE_MSK 0x00003fff - -struct il_rx_pkt { - /* - * The first 4 bytes of the RX frame header contain both the RX frame - * size and some flags. - * Bit fields: - * 31: flag flush RB request - * 30: flag ignore TC (terminal counter) request - * 29: flag fast IRQ request - * 28-14: Reserved - * 13-00: RX frame size - */ - __le32 len_n_flags; - struct il_cmd_header hdr; - union { - struct il3945_rx_frame rx_frame; - struct il3945_tx_resp tx_resp; - struct il3945_beacon_notif beacon_status; - - struct il_alive_resp alive_frame; - struct il_spectrum_notification spectrum_notif; - struct il_csa_notification csa_notif; - struct il_error_resp err_resp; - struct il_card_state_notif card_state_notif; - struct il_add_sta_resp add_sta; - struct il_rem_sta_resp rem_sta; - struct il_sleep_notification sleep_notif; - struct il_spectrum_resp spectrum; - struct il_notif_stats stats; - struct il_compressed_ba_resp compressed_ba; - struct il_missed_beacon_notif missed_beacon; - __le32 status; - u8 raw[0]; - } u; -} __packed; - -#endif /* __il_commands_h__ */ diff --git a/drivers/net/wireless/iwlegacy/common.c b/drivers/net/wireless/iwlegacy/common.c deleted file mode 100644 index 887114582583..000000000000 --- a/drivers/net/wireless/iwlegacy/common.c +++ /dev/null @@ -1,5586 +0,0 @@ -/****************************************************************************** - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, - * USA - * - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - *****************************************************************************/ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/etherdevice.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/types.h> -#include <linux/lockdep.h> -#include <linux/pci.h> -#include <linux/dma-mapping.h> -#include <linux/delay.h> -#include <linux/skbuff.h> -#include <net/mac80211.h> - -#include "common.h" - -int -_il_poll_bit(struct il_priv *il, u32 addr, u32 bits, u32 mask, int timeout) -{ - const int interval = 10; /* microseconds */ - int t = 0; - - do { - if ((_il_rd(il, addr) & mask) == (bits & mask)) - return t; - udelay(interval); - t += interval; - } while (t < timeout); - - return -ETIMEDOUT; -} -EXPORT_SYMBOL(_il_poll_bit); - -void -il_set_bit(struct il_priv *p, u32 r, u32 m) -{ - unsigned long reg_flags; - - spin_lock_irqsave(&p->reg_lock, reg_flags); - _il_set_bit(p, r, m); - spin_unlock_irqrestore(&p->reg_lock, reg_flags); -} -EXPORT_SYMBOL(il_set_bit); - -void -il_clear_bit(struct il_priv *p, u32 r, u32 m) -{ - unsigned long reg_flags; - - spin_lock_irqsave(&p->reg_lock, reg_flags); - _il_clear_bit(p, r, m); - spin_unlock_irqrestore(&p->reg_lock, reg_flags); -} -EXPORT_SYMBOL(il_clear_bit); - -bool -_il_grab_nic_access(struct il_priv *il) -{ - int ret; - u32 val; - - /* this bit wakes up the NIC */ - _il_set_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); - - /* - * These bits say the device is running, and should keep running for - * at least a short while (at least as long as MAC_ACCESS_REQ stays 1), - * but they do not indicate that embedded SRAM is restored yet; - * 3945 and 4965 have volatile SRAM, and must save/restore contents - * to/from host DRAM when sleeping/waking for power-saving. - * Each direction takes approximately 1/4 millisecond; with this - * overhead, it's a good idea to grab and hold MAC_ACCESS_REQUEST if a - * series of register accesses are expected (e.g. reading Event Log), - * to keep device from sleeping. - * - * CSR_UCODE_DRV_GP1 register bit MAC_SLEEP == 0 indicates that - * SRAM is okay/restored. We don't check that here because this call - * is just for hardware register access; but GP1 MAC_SLEEP check is a - * good idea before accessing 3945/4965 SRAM (e.g. reading Event Log). - * - */ - ret = - _il_poll_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN, - (CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY | - CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP), 15000); - if (unlikely(ret < 0)) { - val = _il_rd(il, CSR_GP_CNTRL); - WARN_ONCE(1, "Timeout waiting for ucode processor access " - "(CSR_GP_CNTRL 0x%08x)\n", val); - _il_wr(il, CSR_RESET, CSR_RESET_REG_FLAG_FORCE_NMI); - return false; - } - - return true; -} -EXPORT_SYMBOL_GPL(_il_grab_nic_access); - -int -il_poll_bit(struct il_priv *il, u32 addr, u32 mask, int timeout) -{ - const int interval = 10; /* microseconds */ - int t = 0; - - do { - if ((il_rd(il, addr) & mask) == mask) - return t; - udelay(interval); - t += interval; - } while (t < timeout); - - return -ETIMEDOUT; -} -EXPORT_SYMBOL(il_poll_bit); - -u32 -il_rd_prph(struct il_priv *il, u32 reg) -{ - unsigned long reg_flags; - u32 val; - - spin_lock_irqsave(&il->reg_lock, reg_flags); - _il_grab_nic_access(il); - val = _il_rd_prph(il, reg); - _il_release_nic_access(il); - spin_unlock_irqrestore(&il->reg_lock, reg_flags); - return val; -} -EXPORT_SYMBOL(il_rd_prph); - -void -il_wr_prph(struct il_priv *il, u32 addr, u32 val) -{ - unsigned long reg_flags; - - spin_lock_irqsave(&il->reg_lock, reg_flags); - if (likely(_il_grab_nic_access(il))) { - _il_wr_prph(il, addr, val); - _il_release_nic_access(il); - } - spin_unlock_irqrestore(&il->reg_lock, reg_flags); -} -EXPORT_SYMBOL(il_wr_prph); - -u32 -il_read_targ_mem(struct il_priv *il, u32 addr) -{ - unsigned long reg_flags; - u32 value; - - spin_lock_irqsave(&il->reg_lock, reg_flags); - _il_grab_nic_access(il); - - _il_wr(il, HBUS_TARG_MEM_RADDR, addr); - value = _il_rd(il, HBUS_TARG_MEM_RDAT); - - _il_release_nic_access(il); - spin_unlock_irqrestore(&il->reg_lock, reg_flags); - return value; -} -EXPORT_SYMBOL(il_read_targ_mem); - -void -il_write_targ_mem(struct il_priv *il, u32 addr, u32 val) -{ - unsigned long reg_flags; - - spin_lock_irqsave(&il->reg_lock, reg_flags); - if (likely(_il_grab_nic_access(il))) { - _il_wr(il, HBUS_TARG_MEM_WADDR, addr); - _il_wr(il, HBUS_TARG_MEM_WDAT, val); - _il_release_nic_access(il); - } - spin_unlock_irqrestore(&il->reg_lock, reg_flags); -} -EXPORT_SYMBOL(il_write_targ_mem); - -const char * -il_get_cmd_string(u8 cmd) -{ - switch (cmd) { - IL_CMD(N_ALIVE); - IL_CMD(N_ERROR); - IL_CMD(C_RXON); - IL_CMD(C_RXON_ASSOC); - IL_CMD(C_QOS_PARAM); - IL_CMD(C_RXON_TIMING); - IL_CMD(C_ADD_STA); - IL_CMD(C_REM_STA); - IL_CMD(C_WEPKEY); - IL_CMD(N_3945_RX); - IL_CMD(C_TX); - IL_CMD(C_RATE_SCALE); - IL_CMD(C_LEDS); - IL_CMD(C_TX_LINK_QUALITY_CMD); - IL_CMD(C_CHANNEL_SWITCH); - IL_CMD(N_CHANNEL_SWITCH); - IL_CMD(C_SPECTRUM_MEASUREMENT); - IL_CMD(N_SPECTRUM_MEASUREMENT); - IL_CMD(C_POWER_TBL); - IL_CMD(N_PM_SLEEP); - IL_CMD(N_PM_DEBUG_STATS); - IL_CMD(C_SCAN); - IL_CMD(C_SCAN_ABORT); - IL_CMD(N_SCAN_START); - IL_CMD(N_SCAN_RESULTS); - IL_CMD(N_SCAN_COMPLETE); - IL_CMD(N_BEACON); - IL_CMD(C_TX_BEACON); - IL_CMD(C_TX_PWR_TBL); - IL_CMD(C_BT_CONFIG); - IL_CMD(C_STATS); - IL_CMD(N_STATS); - IL_CMD(N_CARD_STATE); - IL_CMD(N_MISSED_BEACONS); - IL_CMD(C_CT_KILL_CONFIG); - IL_CMD(C_SENSITIVITY); - IL_CMD(C_PHY_CALIBRATION); - IL_CMD(N_RX_PHY); - IL_CMD(N_RX_MPDU); - IL_CMD(N_RX); - IL_CMD(N_COMPRESSED_BA); - default: - return "UNKNOWN"; - - } -} -EXPORT_SYMBOL(il_get_cmd_string); - -#define HOST_COMPLETE_TIMEOUT (HZ / 2) - -static void -il_generic_cmd_callback(struct il_priv *il, struct il_device_cmd *cmd, - struct il_rx_pkt *pkt) -{ - if (pkt->hdr.flags & IL_CMD_FAILED_MSK) { - IL_ERR("Bad return from %s (0x%08X)\n", - il_get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags); - return; - } -#ifdef CONFIG_IWLEGACY_DEBUG - switch (cmd->hdr.cmd) { - case C_TX_LINK_QUALITY_CMD: - case C_SENSITIVITY: - D_HC_DUMP("back from %s (0x%08X)\n", - il_get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags); - break; - default: - D_HC("back from %s (0x%08X)\n", il_get_cmd_string(cmd->hdr.cmd), - pkt->hdr.flags); - } -#endif -} - -static int -il_send_cmd_async(struct il_priv *il, struct il_host_cmd *cmd) -{ - int ret; - - BUG_ON(!(cmd->flags & CMD_ASYNC)); - - /* An asynchronous command can not expect an SKB to be set. */ - BUG_ON(cmd->flags & CMD_WANT_SKB); - - /* Assign a generic callback if one is not provided */ - if (!cmd->callback) - cmd->callback = il_generic_cmd_callback; - - if (test_bit(S_EXIT_PENDING, &il->status)) - return -EBUSY; - - ret = il_enqueue_hcmd(il, cmd); - if (ret < 0) { - IL_ERR("Error sending %s: enqueue_hcmd failed: %d\n", - il_get_cmd_string(cmd->id), ret); - return ret; - } - return 0; -} - -int -il_send_cmd_sync(struct il_priv *il, struct il_host_cmd *cmd) -{ - int cmd_idx; - int ret; - - lockdep_assert_held(&il->mutex); - - BUG_ON(cmd->flags & CMD_ASYNC); - - /* A synchronous command can not have a callback set. */ - BUG_ON(cmd->callback); - - D_INFO("Attempting to send sync command %s\n", - il_get_cmd_string(cmd->id)); - - set_bit(S_HCMD_ACTIVE, &il->status); - D_INFO("Setting HCMD_ACTIVE for command %s\n", - il_get_cmd_string(cmd->id)); - - cmd_idx = il_enqueue_hcmd(il, cmd); - if (cmd_idx < 0) { - ret = cmd_idx; - IL_ERR("Error sending %s: enqueue_hcmd failed: %d\n", - il_get_cmd_string(cmd->id), ret); - goto out; - } - - ret = wait_event_timeout(il->wait_command_queue, - !test_bit(S_HCMD_ACTIVE, &il->status), - HOST_COMPLETE_TIMEOUT); - if (!ret) { - if (test_bit(S_HCMD_ACTIVE, &il->status)) { - IL_ERR("Error sending %s: time out after %dms.\n", - il_get_cmd_string(cmd->id), - jiffies_to_msecs(HOST_COMPLETE_TIMEOUT)); - - clear_bit(S_HCMD_ACTIVE, &il->status); - D_INFO("Clearing HCMD_ACTIVE for command %s\n", - il_get_cmd_string(cmd->id)); - ret = -ETIMEDOUT; - goto cancel; - } - } - - if (test_bit(S_RFKILL, &il->status)) { - IL_ERR("Command %s aborted: RF KILL Switch\n", - il_get_cmd_string(cmd->id)); - ret = -ECANCELED; - goto fail; - } - if (test_bit(S_FW_ERROR, &il->status)) { - IL_ERR("Command %s failed: FW Error\n", - il_get_cmd_string(cmd->id)); - ret = -EIO; - goto fail; - } - if ((cmd->flags & CMD_WANT_SKB) && !cmd->reply_page) { - IL_ERR("Error: Response NULL in '%s'\n", - il_get_cmd_string(cmd->id)); - ret = -EIO; - goto cancel; - } - - ret = 0; - goto out; - -cancel: - if (cmd->flags & CMD_WANT_SKB) { - /* - * Cancel the CMD_WANT_SKB flag for the cmd in the - * TX cmd queue. Otherwise in case the cmd comes - * in later, it will possibly set an invalid - * address (cmd->meta.source). - */ - il->txq[il->cmd_queue].meta[cmd_idx].flags &= ~CMD_WANT_SKB; - } -fail: - if (cmd->reply_page) { - il_free_pages(il, cmd->reply_page); - cmd->reply_page = 0; - } -out: - return ret; -} -EXPORT_SYMBOL(il_send_cmd_sync); - -int -il_send_cmd(struct il_priv *il, struct il_host_cmd *cmd) -{ - if (cmd->flags & CMD_ASYNC) - return il_send_cmd_async(il, cmd); - - return il_send_cmd_sync(il, cmd); -} -EXPORT_SYMBOL(il_send_cmd); - -int -il_send_cmd_pdu(struct il_priv *il, u8 id, u16 len, const void *data) -{ - struct il_host_cmd cmd = { - .id = id, - .len = len, - .data = data, - }; - - return il_send_cmd_sync(il, &cmd); -} -EXPORT_SYMBOL(il_send_cmd_pdu); - -int -il_send_cmd_pdu_async(struct il_priv *il, u8 id, u16 len, const void *data, - void (*callback) (struct il_priv *il, - struct il_device_cmd *cmd, - struct il_rx_pkt *pkt)) -{ - struct il_host_cmd cmd = { - .id = id, - .len = len, - .data = data, - }; - - cmd.flags |= CMD_ASYNC; - cmd.callback = callback; - - return il_send_cmd_async(il, &cmd); -} -EXPORT_SYMBOL(il_send_cmd_pdu_async); - -/* default: IL_LED_BLINK(0) using blinking idx table */ -static int led_mode; -module_param(led_mode, int, S_IRUGO); -MODULE_PARM_DESC(led_mode, - "0=system default, " "1=On(RF On)/Off(RF Off), 2=blinking"); - -/* Throughput OFF time(ms) ON time (ms) - * >300 25 25 - * >200 to 300 40 40 - * >100 to 200 55 55 - * >70 to 100 65 65 - * >50 to 70 75 75 - * >20 to 50 85 85 - * >10 to 20 95 95 - * >5 to 10 110 110 - * >1 to 5 130 130 - * >0 to 1 167 167 - * <=0 SOLID ON - */ -static const struct ieee80211_tpt_blink il_blink[] = { - {.throughput = 0, .blink_time = 334}, - {.throughput = 1 * 1024 - 1, .blink_time = 260}, - {.throughput = 5 * 1024 - 1, .blink_time = 220}, - {.throughput = 10 * 1024 - 1, .blink_time = 190}, - {.throughput = 20 * 1024 - 1, .blink_time = 170}, - {.throughput = 50 * 1024 - 1, .blink_time = 150}, - {.throughput = 70 * 1024 - 1, .blink_time = 130}, - {.throughput = 100 * 1024 - 1, .blink_time = 110}, - {.throughput = 200 * 1024 - 1, .blink_time = 80}, - {.throughput = 300 * 1024 - 1, .blink_time = 50}, -}; - -/* - * Adjust led blink rate to compensate on a MAC Clock difference on every HW - * Led blink rate analysis showed an average deviation of 0% on 3945, - * 5% on 4965 HW. - * Need to compensate on the led on/off time per HW according to the deviation - * to achieve the desired led frequency - * The calculation is: (100-averageDeviation)/100 * blinkTime - * For code efficiency the calculation will be: - * compensation = (100 - averageDeviation) * 64 / 100 - * NewBlinkTime = (compensation * BlinkTime) / 64 - */ -static inline u8 -il_blink_compensation(struct il_priv *il, u8 time, u16 compensation) -{ - if (!compensation) { - IL_ERR("undefined blink compensation: " - "use pre-defined blinking time\n"); - return time; - } - - return (u8) ((time * compensation) >> 6); -} - -/* Set led pattern command */ -static int -il_led_cmd(struct il_priv *il, unsigned long on, unsigned long off) -{ - struct il_led_cmd led_cmd = { - .id = IL_LED_LINK, - .interval = IL_DEF_LED_INTRVL - }; - int ret; - - if (!test_bit(S_READY, &il->status)) - return -EBUSY; - - if (il->blink_on == on && il->blink_off == off) - return 0; - - if (off == 0) { - /* led is SOLID_ON */ - on = IL_LED_SOLID; - } - - D_LED("Led blink time compensation=%u\n", - il->cfg->led_compensation); - led_cmd.on = - il_blink_compensation(il, on, - il->cfg->led_compensation); - led_cmd.off = - il_blink_compensation(il, off, - il->cfg->led_compensation); - - ret = il->ops->send_led_cmd(il, &led_cmd); - if (!ret) { - il->blink_on = on; - il->blink_off = off; - } - return ret; -} - -static void -il_led_brightness_set(struct led_classdev *led_cdev, - enum led_brightness brightness) -{ - struct il_priv *il = container_of(led_cdev, struct il_priv, led); - unsigned long on = 0; - - if (brightness > 0) - on = IL_LED_SOLID; - - il_led_cmd(il, on, 0); -} - -static int -il_led_blink_set(struct led_classdev *led_cdev, unsigned long *delay_on, - unsigned long *delay_off) -{ - struct il_priv *il = container_of(led_cdev, struct il_priv, led); - - return il_led_cmd(il, *delay_on, *delay_off); -} - -void -il_leds_init(struct il_priv *il) -{ - int mode = led_mode; - int ret; - - if (mode == IL_LED_DEFAULT) - mode = il->cfg->led_mode; - - il->led.name = - kasprintf(GFP_KERNEL, "%s-led", wiphy_name(il->hw->wiphy)); - il->led.brightness_set = il_led_brightness_set; - il->led.blink_set = il_led_blink_set; - il->led.max_brightness = 1; - - switch (mode) { - case IL_LED_DEFAULT: - WARN_ON(1); - break; - case IL_LED_BLINK: - il->led.default_trigger = - ieee80211_create_tpt_led_trigger(il->hw, - IEEE80211_TPT_LEDTRIG_FL_CONNECTED, - il_blink, - ARRAY_SIZE(il_blink)); - break; - case IL_LED_RF_STATE: - il->led.default_trigger = ieee80211_get_radio_led_name(il->hw); - break; - } - - ret = led_classdev_register(&il->pci_dev->dev, &il->led); - if (ret) { - kfree(il->led.name); - return; - } - - il->led_registered = true; -} -EXPORT_SYMBOL(il_leds_init); - -void -il_leds_exit(struct il_priv *il) -{ - if (!il->led_registered) - return; - - led_classdev_unregister(&il->led); - kfree(il->led.name); -} -EXPORT_SYMBOL(il_leds_exit); - -/************************** EEPROM BANDS **************************** - * - * The il_eeprom_band definitions below provide the mapping from the - * EEPROM contents to the specific channel number supported for each - * band. - * - * For example, il_priv->eeprom.band_3_channels[4] from the band_3 - * definition below maps to physical channel 42 in the 5.2GHz spectrum. - * The specific geography and calibration information for that channel - * is contained in the eeprom map itself. - * - * During init, we copy the eeprom information and channel map - * information into il->channel_info_24/52 and il->channel_map_24/52 - * - * channel_map_24/52 provides the idx in the channel_info array for a - * given channel. We have to have two separate maps as there is channel - * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and - * band_2 - * - * A value of 0xff stored in the channel_map indicates that the channel - * is not supported by the hardware at all. - * - * A value of 0xfe in the channel_map indicates that the channel is not - * valid for Tx with the current hardware. This means that - * while the system can tune and receive on a given channel, it may not - * be able to associate or transmit any frames on that - * channel. There is no corresponding channel information for that - * entry. - * - *********************************************************************/ - -/* 2.4 GHz */ -const u8 il_eeprom_band_1[14] = { - 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 -}; - -/* 5.2 GHz bands */ -static const u8 il_eeprom_band_2[] = { /* 4915-5080MHz */ - 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16 -}; - -static const u8 il_eeprom_band_3[] = { /* 5170-5320MHz */ - 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64 -}; - -static const u8 il_eeprom_band_4[] = { /* 5500-5700MHz */ - 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 -}; - -static const u8 il_eeprom_band_5[] = { /* 5725-5825MHz */ - 145, 149, 153, 157, 161, 165 -}; - -static const u8 il_eeprom_band_6[] = { /* 2.4 ht40 channel */ - 1, 2, 3, 4, 5, 6, 7 -}; - -static const u8 il_eeprom_band_7[] = { /* 5.2 ht40 channel */ - 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157 -}; - -/****************************************************************************** - * - * EEPROM related functions - * -******************************************************************************/ - -static int -il_eeprom_verify_signature(struct il_priv *il) -{ - u32 gp = _il_rd(il, CSR_EEPROM_GP) & CSR_EEPROM_GP_VALID_MSK; - int ret = 0; - - D_EEPROM("EEPROM signature=0x%08x\n", gp); - switch (gp) { - case CSR_EEPROM_GP_GOOD_SIG_EEP_LESS_THAN_4K: - case CSR_EEPROM_GP_GOOD_SIG_EEP_MORE_THAN_4K: - break; - default: - IL_ERR("bad EEPROM signature," "EEPROM_GP=0x%08x\n", gp); - ret = -ENOENT; - break; - } - return ret; -} - -const u8 * -il_eeprom_query_addr(const struct il_priv *il, size_t offset) -{ - BUG_ON(offset >= il->cfg->eeprom_size); - return &il->eeprom[offset]; -} -EXPORT_SYMBOL(il_eeprom_query_addr); - -u16 -il_eeprom_query16(const struct il_priv *il, size_t offset) -{ - if (!il->eeprom) - return 0; - return (u16) il->eeprom[offset] | ((u16) il->eeprom[offset + 1] << 8); -} -EXPORT_SYMBOL(il_eeprom_query16); - -/** - * il_eeprom_init - read EEPROM contents - * - * Load the EEPROM contents from adapter into il->eeprom - * - * NOTE: This routine uses the non-debug IO access functions. - */ -int -il_eeprom_init(struct il_priv *il) -{ - __le16 *e; - u32 gp = _il_rd(il, CSR_EEPROM_GP); - int sz; - int ret; - u16 addr; - - /* allocate eeprom */ - sz = il->cfg->eeprom_size; - D_EEPROM("NVM size = %d\n", sz); - il->eeprom = kzalloc(sz, GFP_KERNEL); - if (!il->eeprom) { - ret = -ENOMEM; - goto alloc_err; - } - e = (__le16 *) il->eeprom; - - il->ops->apm_init(il); - - ret = il_eeprom_verify_signature(il); - if (ret < 0) { - IL_ERR("EEPROM not found, EEPROM_GP=0x%08x\n", gp); - ret = -ENOENT; - goto err; - } - - /* Make sure driver (instead of uCode) is allowed to read EEPROM */ - ret = il->ops->eeprom_acquire_semaphore(il); - if (ret < 0) { - IL_ERR("Failed to acquire EEPROM semaphore.\n"); - ret = -ENOENT; - goto err; - } - - /* eeprom is an array of 16bit values */ - for (addr = 0; addr < sz; addr += sizeof(u16)) { - u32 r; - - _il_wr(il, CSR_EEPROM_REG, - CSR_EEPROM_REG_MSK_ADDR & (addr << 1)); - - ret = - _il_poll_bit(il, CSR_EEPROM_REG, - CSR_EEPROM_REG_READ_VALID_MSK, - CSR_EEPROM_REG_READ_VALID_MSK, - IL_EEPROM_ACCESS_TIMEOUT); - if (ret < 0) { - IL_ERR("Time out reading EEPROM[%d]\n", addr); - goto done; - } - r = _il_rd(il, CSR_EEPROM_REG); - e[addr / 2] = cpu_to_le16(r >> 16); - } - - D_EEPROM("NVM Type: %s, version: 0x%x\n", "EEPROM", - il_eeprom_query16(il, EEPROM_VERSION)); - - ret = 0; -done: - il->ops->eeprom_release_semaphore(il); - -err: - if (ret) - il_eeprom_free(il); - /* Reset chip to save power until we load uCode during "up". */ - il_apm_stop(il); -alloc_err: - return ret; -} -EXPORT_SYMBOL(il_eeprom_init); - -void -il_eeprom_free(struct il_priv *il) -{ - kfree(il->eeprom); - il->eeprom = NULL; -} -EXPORT_SYMBOL(il_eeprom_free); - -static void -il_init_band_reference(const struct il_priv *il, int eep_band, - int *eeprom_ch_count, - const struct il_eeprom_channel **eeprom_ch_info, - const u8 **eeprom_ch_idx) -{ - u32 offset = il->cfg->regulatory_bands[eep_band - 1]; - - switch (eep_band) { - case 1: /* 2.4GHz band */ - *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_1); - *eeprom_ch_info = - (struct il_eeprom_channel *)il_eeprom_query_addr(il, - offset); - *eeprom_ch_idx = il_eeprom_band_1; - break; - case 2: /* 4.9GHz band */ - *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_2); - *eeprom_ch_info = - (struct il_eeprom_channel *)il_eeprom_query_addr(il, - offset); - *eeprom_ch_idx = il_eeprom_band_2; - break; - case 3: /* 5.2GHz band */ - *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_3); - *eeprom_ch_info = - (struct il_eeprom_channel *)il_eeprom_query_addr(il, - offset); - *eeprom_ch_idx = il_eeprom_band_3; - break; - case 4: /* 5.5GHz band */ - *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_4); - *eeprom_ch_info = - (struct il_eeprom_channel *)il_eeprom_query_addr(il, - offset); - *eeprom_ch_idx = il_eeprom_band_4; - break; - case 5: /* 5.7GHz band */ - *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_5); - *eeprom_ch_info = - (struct il_eeprom_channel *)il_eeprom_query_addr(il, - offset); - *eeprom_ch_idx = il_eeprom_band_5; - break; - case 6: /* 2.4GHz ht40 channels */ - *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_6); - *eeprom_ch_info = - (struct il_eeprom_channel *)il_eeprom_query_addr(il, - offset); - *eeprom_ch_idx = il_eeprom_band_6; - break; - case 7: /* 5 GHz ht40 channels */ - *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_7); - *eeprom_ch_info = - (struct il_eeprom_channel *)il_eeprom_query_addr(il, - offset); - *eeprom_ch_idx = il_eeprom_band_7; - break; - default: - BUG(); - } -} - -#define CHECK_AND_PRINT(x) ((eeprom_ch->flags & EEPROM_CHANNEL_##x) \ - ? # x " " : "") -/** - * il_mod_ht40_chan_info - Copy ht40 channel info into driver's il. - * - * Does not set up a command, or touch hardware. - */ -static int -il_mod_ht40_chan_info(struct il_priv *il, enum ieee80211_band band, u16 channel, - const struct il_eeprom_channel *eeprom_ch, - u8 clear_ht40_extension_channel) -{ - struct il_channel_info *ch_info; - - ch_info = - (struct il_channel_info *)il_get_channel_info(il, band, channel); - - if (!il_is_channel_valid(ch_info)) - return -1; - - D_EEPROM("HT40 Ch. %d [%sGHz] %s%s%s%s%s(0x%02x %ddBm):" - " Ad-Hoc %ssupported\n", ch_info->channel, - il_is_channel_a_band(ch_info) ? "5.2" : "2.4", - CHECK_AND_PRINT(IBSS), CHECK_AND_PRINT(ACTIVE), - CHECK_AND_PRINT(RADAR), CHECK_AND_PRINT(WIDE), - CHECK_AND_PRINT(DFS), eeprom_ch->flags, - eeprom_ch->max_power_avg, - ((eeprom_ch->flags & EEPROM_CHANNEL_IBSS) && - !(eeprom_ch->flags & EEPROM_CHANNEL_RADAR)) ? "" : "not "); - - ch_info->ht40_eeprom = *eeprom_ch; - ch_info->ht40_max_power_avg = eeprom_ch->max_power_avg; - ch_info->ht40_flags = eeprom_ch->flags; - if (eeprom_ch->flags & EEPROM_CHANNEL_VALID) - ch_info->ht40_extension_channel &= - ~clear_ht40_extension_channel; - - return 0; -} - -#define CHECK_AND_PRINT_I(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \ - ? # x " " : "") - -/** - * il_init_channel_map - Set up driver's info for all possible channels - */ -int -il_init_channel_map(struct il_priv *il) -{ - int eeprom_ch_count = 0; - const u8 *eeprom_ch_idx = NULL; - const struct il_eeprom_channel *eeprom_ch_info = NULL; - int band, ch; - struct il_channel_info *ch_info; - - if (il->channel_count) { - D_EEPROM("Channel map already initialized.\n"); - return 0; - } - - D_EEPROM("Initializing regulatory info from EEPROM\n"); - - il->channel_count = - ARRAY_SIZE(il_eeprom_band_1) + ARRAY_SIZE(il_eeprom_band_2) + - ARRAY_SIZE(il_eeprom_band_3) + ARRAY_SIZE(il_eeprom_band_4) + - ARRAY_SIZE(il_eeprom_band_5); - - D_EEPROM("Parsing data for %d channels.\n", il->channel_count); - - il->channel_info = - kzalloc(sizeof(struct il_channel_info) * il->channel_count, - GFP_KERNEL); - if (!il->channel_info) { - IL_ERR("Could not allocate channel_info\n"); - il->channel_count = 0; - return -ENOMEM; - } - - ch_info = il->channel_info; - - /* Loop through the 5 EEPROM bands adding them in order to the - * channel map we maintain (that contains additional information than - * what just in the EEPROM) */ - for (band = 1; band <= 5; band++) { - - il_init_band_reference(il, band, &eeprom_ch_count, - &eeprom_ch_info, &eeprom_ch_idx); - - /* Loop through each band adding each of the channels */ - for (ch = 0; ch < eeprom_ch_count; ch++) { - ch_info->channel = eeprom_ch_idx[ch]; - ch_info->band = - (band == - 1) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; - - /* permanently store EEPROM's channel regulatory flags - * and max power in channel info database. */ - ch_info->eeprom = eeprom_ch_info[ch]; - - /* Copy the run-time flags so they are there even on - * invalid channels */ - ch_info->flags = eeprom_ch_info[ch].flags; - /* First write that ht40 is not enabled, and then enable - * one by one */ - ch_info->ht40_extension_channel = - IEEE80211_CHAN_NO_HT40; - - if (!(il_is_channel_valid(ch_info))) { - D_EEPROM("Ch. %d Flags %x [%sGHz] - " - "No traffic\n", ch_info->channel, - ch_info->flags, - il_is_channel_a_band(ch_info) ? "5.2" : - "2.4"); - ch_info++; - continue; - } - - /* Initialize regulatory-based run-time data */ - ch_info->max_power_avg = ch_info->curr_txpow = - eeprom_ch_info[ch].max_power_avg; - ch_info->scan_power = eeprom_ch_info[ch].max_power_avg; - ch_info->min_power = 0; - - D_EEPROM("Ch. %d [%sGHz] " "%s%s%s%s%s%s(0x%02x %ddBm):" - " Ad-Hoc %ssupported\n", ch_info->channel, - il_is_channel_a_band(ch_info) ? "5.2" : "2.4", - CHECK_AND_PRINT_I(VALID), - CHECK_AND_PRINT_I(IBSS), - CHECK_AND_PRINT_I(ACTIVE), - CHECK_AND_PRINT_I(RADAR), - CHECK_AND_PRINT_I(WIDE), - CHECK_AND_PRINT_I(DFS), - eeprom_ch_info[ch].flags, - eeprom_ch_info[ch].max_power_avg, - ((eeprom_ch_info[ch]. - flags & EEPROM_CHANNEL_IBSS) && - !(eeprom_ch_info[ch]. - flags & EEPROM_CHANNEL_RADAR)) ? "" : - "not "); - - ch_info++; - } - } - - /* Check if we do have HT40 channels */ - if (il->cfg->regulatory_bands[5] == EEPROM_REGULATORY_BAND_NO_HT40 && - il->cfg->regulatory_bands[6] == EEPROM_REGULATORY_BAND_NO_HT40) - return 0; - - /* Two additional EEPROM bands for 2.4 and 5 GHz HT40 channels */ - for (band = 6; band <= 7; band++) { - enum ieee80211_band ieeeband; - - il_init_band_reference(il, band, &eeprom_ch_count, - &eeprom_ch_info, &eeprom_ch_idx); - - /* EEPROM band 6 is 2.4, band 7 is 5 GHz */ - ieeeband = - (band == 6) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; - - /* Loop through each band adding each of the channels */ - for (ch = 0; ch < eeprom_ch_count; ch++) { - /* Set up driver's info for lower half */ - il_mod_ht40_chan_info(il, ieeeband, eeprom_ch_idx[ch], - &eeprom_ch_info[ch], - IEEE80211_CHAN_NO_HT40PLUS); - - /* Set up driver's info for upper half */ - il_mod_ht40_chan_info(il, ieeeband, - eeprom_ch_idx[ch] + 4, - &eeprom_ch_info[ch], - IEEE80211_CHAN_NO_HT40MINUS); - } - } - - return 0; -} -EXPORT_SYMBOL(il_init_channel_map); - -/* - * il_free_channel_map - undo allocations in il_init_channel_map - */ -void -il_free_channel_map(struct il_priv *il) -{ - kfree(il->channel_info); - il->channel_count = 0; -} -EXPORT_SYMBOL(il_free_channel_map); - -/** - * il_get_channel_info - Find driver's ilate channel info - * - * Based on band and channel number. - */ -const struct il_channel_info * -il_get_channel_info(const struct il_priv *il, enum ieee80211_band band, - u16 channel) -{ - int i; - - switch (band) { - case IEEE80211_BAND_5GHZ: - for (i = 14; i < il->channel_count; i++) { - if (il->channel_info[i].channel == channel) - return &il->channel_info[i]; - } - break; - case IEEE80211_BAND_2GHZ: - if (channel >= 1 && channel <= 14) - return &il->channel_info[channel - 1]; - break; - default: - BUG(); - } - - return NULL; -} -EXPORT_SYMBOL(il_get_channel_info); - -/* - * Setting power level allows the card to go to sleep when not busy. - * - * We calculate a sleep command based on the required latency, which - * we get from mac80211. - */ - -#define SLP_VEC(X0, X1, X2, X3, X4) { \ - cpu_to_le32(X0), \ - cpu_to_le32(X1), \ - cpu_to_le32(X2), \ - cpu_to_le32(X3), \ - cpu_to_le32(X4) \ -} - -static void -il_build_powertable_cmd(struct il_priv *il, struct il_powertable_cmd *cmd) -{ - const __le32 interval[3][IL_POWER_VEC_SIZE] = { - SLP_VEC(2, 2, 4, 6, 0xFF), - SLP_VEC(2, 4, 7, 10, 10), - SLP_VEC(4, 7, 10, 10, 0xFF) - }; - int i, dtim_period, no_dtim; - u32 max_sleep; - bool skip; - - memset(cmd, 0, sizeof(*cmd)); - - if (il->power_data.pci_pm) - cmd->flags |= IL_POWER_PCI_PM_MSK; - - /* if no Power Save, we are done */ - if (il->power_data.ps_disabled) - return; - - cmd->flags = IL_POWER_DRIVER_ALLOW_SLEEP_MSK; - cmd->keep_alive_seconds = 0; - cmd->debug_flags = 0; - cmd->rx_data_timeout = cpu_to_le32(25 * 1024); - cmd->tx_data_timeout = cpu_to_le32(25 * 1024); - cmd->keep_alive_beacons = 0; - - dtim_period = il->vif ? il->vif->bss_conf.dtim_period : 0; - - if (dtim_period <= 2) { - memcpy(cmd->sleep_interval, interval[0], sizeof(interval[0])); - no_dtim = 2; - } else if (dtim_period <= 10) { - memcpy(cmd->sleep_interval, interval[1], sizeof(interval[1])); - no_dtim = 2; - } else { - memcpy(cmd->sleep_interval, interval[2], sizeof(interval[2])); - no_dtim = 0; - } - - if (dtim_period == 0) { - dtim_period = 1; - skip = false; - } else { - skip = !!no_dtim; - } - - if (skip) { - __le32 tmp = cmd->sleep_interval[IL_POWER_VEC_SIZE - 1]; - - max_sleep = le32_to_cpu(tmp); - if (max_sleep == 0xFF) - max_sleep = dtim_period * (skip + 1); - else if (max_sleep > dtim_period) - max_sleep = (max_sleep / dtim_period) * dtim_period; - cmd->flags |= IL_POWER_SLEEP_OVER_DTIM_MSK; - } else { - max_sleep = dtim_period; - cmd->flags &= ~IL_POWER_SLEEP_OVER_DTIM_MSK; - } - - for (i = 0; i < IL_POWER_VEC_SIZE; i++) - if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep) - cmd->sleep_interval[i] = cpu_to_le32(max_sleep); -} - -static int -il_set_power(struct il_priv *il, struct il_powertable_cmd *cmd) -{ - D_POWER("Sending power/sleep command\n"); - D_POWER("Flags value = 0x%08X\n", cmd->flags); - D_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout)); - D_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout)); - D_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n", - le32_to_cpu(cmd->sleep_interval[0]), - le32_to_cpu(cmd->sleep_interval[1]), - le32_to_cpu(cmd->sleep_interval[2]), - le32_to_cpu(cmd->sleep_interval[3]), - le32_to_cpu(cmd->sleep_interval[4])); - - return il_send_cmd_pdu(il, C_POWER_TBL, - sizeof(struct il_powertable_cmd), cmd); -} - -static int -il_power_set_mode(struct il_priv *il, struct il_powertable_cmd *cmd, bool force) -{ - int ret; - bool update_chains; - - lockdep_assert_held(&il->mutex); - - /* Don't update the RX chain when chain noise calibration is running */ - update_chains = il->chain_noise_data.state == IL_CHAIN_NOISE_DONE || - il->chain_noise_data.state == IL_CHAIN_NOISE_ALIVE; - - if (!memcmp(&il->power_data.sleep_cmd, cmd, sizeof(*cmd)) && !force) - return 0; - - if (!il_is_ready_rf(il)) - return -EIO; - - /* scan complete use sleep_power_next, need to be updated */ - memcpy(&il->power_data.sleep_cmd_next, cmd, sizeof(*cmd)); - if (test_bit(S_SCANNING, &il->status) && !force) { - D_INFO("Defer power set mode while scanning\n"); - return 0; - } - - if (cmd->flags & IL_POWER_DRIVER_ALLOW_SLEEP_MSK) - set_bit(S_POWER_PMI, &il->status); - - ret = il_set_power(il, cmd); - if (!ret) { - if (!(cmd->flags & IL_POWER_DRIVER_ALLOW_SLEEP_MSK)) - clear_bit(S_POWER_PMI, &il->status); - - if (il->ops->update_chain_flags && update_chains) - il->ops->update_chain_flags(il); - else if (il->ops->update_chain_flags) - D_POWER("Cannot update the power, chain noise " - "calibration running: %d\n", - il->chain_noise_data.state); - - memcpy(&il->power_data.sleep_cmd, cmd, sizeof(*cmd)); - } else - IL_ERR("set power fail, ret = %d", ret); - - return ret; -} - -int -il_power_update_mode(struct il_priv *il, bool force) -{ - struct il_powertable_cmd cmd; - - il_build_powertable_cmd(il, &cmd); - - return il_power_set_mode(il, &cmd, force); -} -EXPORT_SYMBOL(il_power_update_mode); - -/* initialize to default */ -void -il_power_initialize(struct il_priv *il) -{ - u16 lctl; - - pcie_capability_read_word(il->pci_dev, PCI_EXP_LNKCTL, &lctl); - il->power_data.pci_pm = !(lctl & PCI_EXP_LNKCTL_ASPM_L0S); - - il->power_data.debug_sleep_level_override = -1; - - memset(&il->power_data.sleep_cmd, 0, sizeof(il->power_data.sleep_cmd)); -} -EXPORT_SYMBOL(il_power_initialize); - -/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after - * sending probe req. This should be set long enough to hear probe responses - * from more than one AP. */ -#define IL_ACTIVE_DWELL_TIME_24 (30) /* all times in msec */ -#define IL_ACTIVE_DWELL_TIME_52 (20) - -#define IL_ACTIVE_DWELL_FACTOR_24GHZ (3) -#define IL_ACTIVE_DWELL_FACTOR_52GHZ (2) - -/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel. - * Must be set longer than active dwell time. - * For the most reliable scan, set > AP beacon interval (typically 100msec). */ -#define IL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */ -#define IL_PASSIVE_DWELL_TIME_52 (10) -#define IL_PASSIVE_DWELL_BASE (100) -#define IL_CHANNEL_TUNE_TIME 5 - -static int -il_send_scan_abort(struct il_priv *il) -{ - int ret; - struct il_rx_pkt *pkt; - struct il_host_cmd cmd = { - .id = C_SCAN_ABORT, - .flags = CMD_WANT_SKB, - }; - - /* Exit instantly with error when device is not ready - * to receive scan abort command or it does not perform - * hardware scan currently */ - if (!test_bit(S_READY, &il->status) || - !test_bit(S_GEO_CONFIGURED, &il->status) || - !test_bit(S_SCAN_HW, &il->status) || - test_bit(S_FW_ERROR, &il->status) || - test_bit(S_EXIT_PENDING, &il->status)) - return -EIO; - - ret = il_send_cmd_sync(il, &cmd); - if (ret) - return ret; - - pkt = (struct il_rx_pkt *)cmd.reply_page; - if (pkt->u.status != CAN_ABORT_STATUS) { - /* The scan abort will return 1 for success or - * 2 for "failure". A failure condition can be - * due to simply not being in an active scan which - * can occur if we send the scan abort before we - * the microcode has notified us that a scan is - * completed. */ - D_SCAN("SCAN_ABORT ret %d.\n", pkt->u.status); - ret = -EIO; - } - - il_free_pages(il, cmd.reply_page); - return ret; -} - -static void -il_complete_scan(struct il_priv *il, bool aborted) -{ - /* check if scan was requested from mac80211 */ - if (il->scan_request) { - D_SCAN("Complete scan in mac80211\n"); - ieee80211_scan_completed(il->hw, aborted); - } - - il->scan_vif = NULL; - il->scan_request = NULL; -} - -void -il_force_scan_end(struct il_priv *il) -{ - lockdep_assert_held(&il->mutex); - - if (!test_bit(S_SCANNING, &il->status)) { - D_SCAN("Forcing scan end while not scanning\n"); - return; - } - - D_SCAN("Forcing scan end\n"); - clear_bit(S_SCANNING, &il->status); - clear_bit(S_SCAN_HW, &il->status); - clear_bit(S_SCAN_ABORTING, &il->status); - il_complete_scan(il, true); -} - -static void -il_do_scan_abort(struct il_priv *il) -{ - int ret; - - lockdep_assert_held(&il->mutex); - - if (!test_bit(S_SCANNING, &il->status)) { - D_SCAN("Not performing scan to abort\n"); - return; - } - - if (test_and_set_bit(S_SCAN_ABORTING, &il->status)) { - D_SCAN("Scan abort in progress\n"); - return; - } - - ret = il_send_scan_abort(il); - if (ret) { - D_SCAN("Send scan abort failed %d\n", ret); - il_force_scan_end(il); - } else - D_SCAN("Successfully send scan abort\n"); -} - -/** - * il_scan_cancel - Cancel any currently executing HW scan - */ -int -il_scan_cancel(struct il_priv *il) -{ - D_SCAN("Queuing abort scan\n"); - queue_work(il->workqueue, &il->abort_scan); - return 0; -} -EXPORT_SYMBOL(il_scan_cancel); - -/** - * il_scan_cancel_timeout - Cancel any currently executing HW scan - * @ms: amount of time to wait (in milliseconds) for scan to abort - * - */ -int -il_scan_cancel_timeout(struct il_priv *il, unsigned long ms) -{ - unsigned long timeout = jiffies + msecs_to_jiffies(ms); - - lockdep_assert_held(&il->mutex); - - D_SCAN("Scan cancel timeout\n"); - - il_do_scan_abort(il); - - while (time_before_eq(jiffies, timeout)) { - if (!test_bit(S_SCAN_HW, &il->status)) - break; - msleep(20); - } - - return test_bit(S_SCAN_HW, &il->status); -} -EXPORT_SYMBOL(il_scan_cancel_timeout); - -/* Service response to C_SCAN (0x80) */ -static void -il_hdl_scan(struct il_priv *il, struct il_rx_buf *rxb) -{ -#ifdef CONFIG_IWLEGACY_DEBUG - struct il_rx_pkt *pkt = rxb_addr(rxb); - struct il_scanreq_notification *notif = - (struct il_scanreq_notification *)pkt->u.raw; - - D_SCAN("Scan request status = 0x%x\n", notif->status); -#endif -} - -/* Service N_SCAN_START (0x82) */ -static void -il_hdl_scan_start(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - struct il_scanstart_notification *notif = - (struct il_scanstart_notification *)pkt->u.raw; - il->scan_start_tsf = le32_to_cpu(notif->tsf_low); - D_SCAN("Scan start: " "%d [802.11%s] " - "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n", notif->channel, - notif->band ? "bg" : "a", le32_to_cpu(notif->tsf_high), - le32_to_cpu(notif->tsf_low), notif->status, notif->beacon_timer); -} - -/* Service N_SCAN_RESULTS (0x83) */ -static void -il_hdl_scan_results(struct il_priv *il, struct il_rx_buf *rxb) -{ -#ifdef CONFIG_IWLEGACY_DEBUG - struct il_rx_pkt *pkt = rxb_addr(rxb); - struct il_scanresults_notification *notif = - (struct il_scanresults_notification *)pkt->u.raw; - - D_SCAN("Scan ch.res: " "%d [802.11%s] " "(TSF: 0x%08X:%08X) - %d " - "elapsed=%lu usec\n", notif->channel, notif->band ? "bg" : "a", - le32_to_cpu(notif->tsf_high), le32_to_cpu(notif->tsf_low), - le32_to_cpu(notif->stats[0]), - le32_to_cpu(notif->tsf_low) - il->scan_start_tsf); -#endif -} - -/* Service N_SCAN_COMPLETE (0x84) */ -static void -il_hdl_scan_complete(struct il_priv *il, struct il_rx_buf *rxb) -{ - -#ifdef CONFIG_IWLEGACY_DEBUG - struct il_rx_pkt *pkt = rxb_addr(rxb); - struct il_scancomplete_notification *scan_notif = (void *)pkt->u.raw; -#endif - - D_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n", - scan_notif->scanned_channels, scan_notif->tsf_low, - scan_notif->tsf_high, scan_notif->status); - - /* The HW is no longer scanning */ - clear_bit(S_SCAN_HW, &il->status); - - D_SCAN("Scan on %sGHz took %dms\n", - (il->scan_band == IEEE80211_BAND_2GHZ) ? "2.4" : "5.2", - jiffies_to_msecs(jiffies - il->scan_start)); - - queue_work(il->workqueue, &il->scan_completed); -} - -void -il_setup_rx_scan_handlers(struct il_priv *il) -{ - /* scan handlers */ - il->handlers[C_SCAN] = il_hdl_scan; - il->handlers[N_SCAN_START] = il_hdl_scan_start; - il->handlers[N_SCAN_RESULTS] = il_hdl_scan_results; - il->handlers[N_SCAN_COMPLETE] = il_hdl_scan_complete; -} -EXPORT_SYMBOL(il_setup_rx_scan_handlers); - -u16 -il_get_active_dwell_time(struct il_priv *il, enum ieee80211_band band, - u8 n_probes) -{ - if (band == IEEE80211_BAND_5GHZ) - return IL_ACTIVE_DWELL_TIME_52 + - IL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1); - else - return IL_ACTIVE_DWELL_TIME_24 + - IL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1); -} -EXPORT_SYMBOL(il_get_active_dwell_time); - -u16 -il_get_passive_dwell_time(struct il_priv *il, enum ieee80211_band band, - struct ieee80211_vif *vif) -{ - u16 value; - - u16 passive = - (band == - IEEE80211_BAND_2GHZ) ? IL_PASSIVE_DWELL_BASE + - IL_PASSIVE_DWELL_TIME_24 : IL_PASSIVE_DWELL_BASE + - IL_PASSIVE_DWELL_TIME_52; - - if (il_is_any_associated(il)) { - /* - * If we're associated, we clamp the maximum passive - * dwell time to be 98% of the smallest beacon interval - * (minus 2 * channel tune time) - */ - value = il->vif ? il->vif->bss_conf.beacon_int : 0; - if (value > IL_PASSIVE_DWELL_BASE || !value) - value = IL_PASSIVE_DWELL_BASE; - value = (value * 98) / 100 - IL_CHANNEL_TUNE_TIME * 2; - passive = min(value, passive); - } - - return passive; -} -EXPORT_SYMBOL(il_get_passive_dwell_time); - -void -il_init_scan_params(struct il_priv *il) -{ - u8 ant_idx = fls(il->hw_params.valid_tx_ant) - 1; - if (!il->scan_tx_ant[IEEE80211_BAND_5GHZ]) - il->scan_tx_ant[IEEE80211_BAND_5GHZ] = ant_idx; - if (!il->scan_tx_ant[IEEE80211_BAND_2GHZ]) - il->scan_tx_ant[IEEE80211_BAND_2GHZ] = ant_idx; -} -EXPORT_SYMBOL(il_init_scan_params); - -static int -il_scan_initiate(struct il_priv *il, struct ieee80211_vif *vif) -{ - int ret; - - lockdep_assert_held(&il->mutex); - - cancel_delayed_work(&il->scan_check); - - if (!il_is_ready_rf(il)) { - IL_WARN("Request scan called when driver not ready.\n"); - return -EIO; - } - - if (test_bit(S_SCAN_HW, &il->status)) { - D_SCAN("Multiple concurrent scan requests in parallel.\n"); - return -EBUSY; - } - - if (test_bit(S_SCAN_ABORTING, &il->status)) { - D_SCAN("Scan request while abort pending.\n"); - return -EBUSY; - } - - D_SCAN("Starting scan...\n"); - - set_bit(S_SCANNING, &il->status); - il->scan_start = jiffies; - - ret = il->ops->request_scan(il, vif); - if (ret) { - clear_bit(S_SCANNING, &il->status); - return ret; - } - - queue_delayed_work(il->workqueue, &il->scan_check, - IL_SCAN_CHECK_WATCHDOG); - - return 0; -} - -int -il_mac_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - struct ieee80211_scan_request *hw_req) -{ - struct cfg80211_scan_request *req = &hw_req->req; - struct il_priv *il = hw->priv; - int ret; - - if (req->n_channels == 0) { - IL_ERR("Can not scan on no channels.\n"); - return -EINVAL; - } - - mutex_lock(&il->mutex); - D_MAC80211("enter\n"); - - if (test_bit(S_SCANNING, &il->status)) { - D_SCAN("Scan already in progress.\n"); - ret = -EAGAIN; - goto out_unlock; - } - - /* mac80211 will only ask for one band at a time */ - il->scan_request = req; - il->scan_vif = vif; - il->scan_band = req->channels[0]->band; - - ret = il_scan_initiate(il, vif); - -out_unlock: - D_MAC80211("leave ret %d\n", ret); - mutex_unlock(&il->mutex); - - return ret; -} -EXPORT_SYMBOL(il_mac_hw_scan); - -static void -il_bg_scan_check(struct work_struct *data) -{ - struct il_priv *il = - container_of(data, struct il_priv, scan_check.work); - - D_SCAN("Scan check work\n"); - - /* Since we are here firmware does not finish scan and - * most likely is in bad shape, so we don't bother to - * send abort command, just force scan complete to mac80211 */ - mutex_lock(&il->mutex); - il_force_scan_end(il); - mutex_unlock(&il->mutex); -} - -/** - * il_fill_probe_req - fill in all required fields and IE for probe request - */ - -u16 -il_fill_probe_req(struct il_priv *il, struct ieee80211_mgmt *frame, - const u8 *ta, const u8 *ies, int ie_len, int left) -{ - int len = 0; - u8 *pos = NULL; - - /* Make sure there is enough space for the probe request, - * two mandatory IEs and the data */ - left -= 24; - if (left < 0) - return 0; - - frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); - eth_broadcast_addr(frame->da); - memcpy(frame->sa, ta, ETH_ALEN); - eth_broadcast_addr(frame->bssid); - frame->seq_ctrl = 0; - - len += 24; - - /* ...next IE... */ - pos = &frame->u.probe_req.variable[0]; - - /* fill in our indirect SSID IE */ - left -= 2; - if (left < 0) - return 0; - *pos++ = WLAN_EID_SSID; - *pos++ = 0; - - len += 2; - - if (WARN_ON(left < ie_len)) - return len; - - if (ies && ie_len) { - memcpy(pos, ies, ie_len); - len += ie_len; - } - - return (u16) len; -} -EXPORT_SYMBOL(il_fill_probe_req); - -static void -il_bg_abort_scan(struct work_struct *work) -{ - struct il_priv *il = container_of(work, struct il_priv, abort_scan); - - D_SCAN("Abort scan work\n"); - - /* We keep scan_check work queued in case when firmware will not - * report back scan completed notification */ - mutex_lock(&il->mutex); - il_scan_cancel_timeout(il, 200); - mutex_unlock(&il->mutex); -} - -static void -il_bg_scan_completed(struct work_struct *work) -{ - struct il_priv *il = container_of(work, struct il_priv, scan_completed); - bool aborted; - - D_SCAN("Completed scan.\n"); - - cancel_delayed_work(&il->scan_check); - - mutex_lock(&il->mutex); - - aborted = test_and_clear_bit(S_SCAN_ABORTING, &il->status); - if (aborted) - D_SCAN("Aborted scan completed.\n"); - - if (!test_and_clear_bit(S_SCANNING, &il->status)) { - D_SCAN("Scan already completed.\n"); - goto out_settings; - } - - il_complete_scan(il, aborted); - -out_settings: - /* Can we still talk to firmware ? */ - if (!il_is_ready_rf(il)) - goto out; - - /* - * We do not commit power settings while scan is pending, - * do it now if the settings changed. - */ - il_power_set_mode(il, &il->power_data.sleep_cmd_next, false); - il_set_tx_power(il, il->tx_power_next, false); - - il->ops->post_scan(il); - -out: - mutex_unlock(&il->mutex); -} - -void -il_setup_scan_deferred_work(struct il_priv *il) -{ - INIT_WORK(&il->scan_completed, il_bg_scan_completed); - INIT_WORK(&il->abort_scan, il_bg_abort_scan); - INIT_DELAYED_WORK(&il->scan_check, il_bg_scan_check); -} -EXPORT_SYMBOL(il_setup_scan_deferred_work); - -void -il_cancel_scan_deferred_work(struct il_priv *il) -{ - cancel_work_sync(&il->abort_scan); - cancel_work_sync(&il->scan_completed); - - if (cancel_delayed_work_sync(&il->scan_check)) { - mutex_lock(&il->mutex); - il_force_scan_end(il); - mutex_unlock(&il->mutex); - } -} -EXPORT_SYMBOL(il_cancel_scan_deferred_work); - -/* il->sta_lock must be held */ -static void -il_sta_ucode_activate(struct il_priv *il, u8 sta_id) -{ - - if (!(il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE)) - IL_ERR("ACTIVATE a non DRIVER active station id %u addr %pM\n", - sta_id, il->stations[sta_id].sta.sta.addr); - - if (il->stations[sta_id].used & IL_STA_UCODE_ACTIVE) { - D_ASSOC("STA id %u addr %pM already present" - " in uCode (according to driver)\n", sta_id, - il->stations[sta_id].sta.sta.addr); - } else { - il->stations[sta_id].used |= IL_STA_UCODE_ACTIVE; - D_ASSOC("Added STA id %u addr %pM to uCode\n", sta_id, - il->stations[sta_id].sta.sta.addr); - } -} - -static int -il_process_add_sta_resp(struct il_priv *il, struct il_addsta_cmd *addsta, - struct il_rx_pkt *pkt, bool sync) -{ - u8 sta_id = addsta->sta.sta_id; - unsigned long flags; - int ret = -EIO; - - if (pkt->hdr.flags & IL_CMD_FAILED_MSK) { - IL_ERR("Bad return from C_ADD_STA (0x%08X)\n", pkt->hdr.flags); - return ret; - } - - D_INFO("Processing response for adding station %u\n", sta_id); - - spin_lock_irqsave(&il->sta_lock, flags); - - switch (pkt->u.add_sta.status) { - case ADD_STA_SUCCESS_MSK: - D_INFO("C_ADD_STA PASSED\n"); - il_sta_ucode_activate(il, sta_id); - ret = 0; - break; - case ADD_STA_NO_ROOM_IN_TBL: - IL_ERR("Adding station %d failed, no room in table.\n", sta_id); - break; - case ADD_STA_NO_BLOCK_ACK_RESOURCE: - IL_ERR("Adding station %d failed, no block ack resource.\n", - sta_id); - break; - case ADD_STA_MODIFY_NON_EXIST_STA: - IL_ERR("Attempting to modify non-existing station %d\n", - sta_id); - break; - default: - D_ASSOC("Received C_ADD_STA:(0x%08X)\n", pkt->u.add_sta.status); - break; - } - - D_INFO("%s station id %u addr %pM\n", - il->stations[sta_id].sta.mode == - STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", sta_id, - il->stations[sta_id].sta.sta.addr); - - /* - * XXX: The MAC address in the command buffer is often changed from - * the original sent to the device. That is, the MAC address - * written to the command buffer often is not the same MAC address - * read from the command buffer when the command returns. This - * issue has not yet been resolved and this debugging is left to - * observe the problem. - */ - D_INFO("%s station according to cmd buffer %pM\n", - il->stations[sta_id].sta.mode == - STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", addsta->sta.addr); - spin_unlock_irqrestore(&il->sta_lock, flags); - - return ret; -} - -static void -il_add_sta_callback(struct il_priv *il, struct il_device_cmd *cmd, - struct il_rx_pkt *pkt) -{ - struct il_addsta_cmd *addsta = (struct il_addsta_cmd *)cmd->cmd.payload; - - il_process_add_sta_resp(il, addsta, pkt, false); - -} - -int -il_send_add_sta(struct il_priv *il, struct il_addsta_cmd *sta, u8 flags) -{ - struct il_rx_pkt *pkt = NULL; - int ret = 0; - u8 data[sizeof(*sta)]; - struct il_host_cmd cmd = { - .id = C_ADD_STA, - .flags = flags, - .data = data, - }; - u8 sta_id __maybe_unused = sta->sta.sta_id; - - D_INFO("Adding sta %u (%pM) %ssynchronously\n", sta_id, sta->sta.addr, - flags & CMD_ASYNC ? "a" : ""); - - if (flags & CMD_ASYNC) - cmd.callback = il_add_sta_callback; - else { - cmd.flags |= CMD_WANT_SKB; - might_sleep(); - } - - cmd.len = il->ops->build_addsta_hcmd(sta, data); - ret = il_send_cmd(il, &cmd); - - if (ret || (flags & CMD_ASYNC)) - return ret; - - if (ret == 0) { - pkt = (struct il_rx_pkt *)cmd.reply_page; - ret = il_process_add_sta_resp(il, sta, pkt, true); - } - il_free_pages(il, cmd.reply_page); - - return ret; -} -EXPORT_SYMBOL(il_send_add_sta); - -static void -il_set_ht_add_station(struct il_priv *il, u8 idx, struct ieee80211_sta *sta) -{ - struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap; - __le32 sta_flags; - - if (!sta || !sta_ht_inf->ht_supported) - goto done; - - D_ASSOC("spatial multiplexing power save mode: %s\n", - (sta->smps_mode == IEEE80211_SMPS_STATIC) ? "static" : - (sta->smps_mode == IEEE80211_SMPS_DYNAMIC) ? "dynamic" : - "disabled"); - - sta_flags = il->stations[idx].sta.station_flags; - - sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK); - - switch (sta->smps_mode) { - case IEEE80211_SMPS_STATIC: - sta_flags |= STA_FLG_MIMO_DIS_MSK; - break; - case IEEE80211_SMPS_DYNAMIC: - sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK; - break; - case IEEE80211_SMPS_OFF: - break; - default: - IL_WARN("Invalid MIMO PS mode %d\n", sta->smps_mode); - break; - } - - sta_flags |= - cpu_to_le32((u32) sta_ht_inf-> - ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS); - - sta_flags |= - cpu_to_le32((u32) sta_ht_inf-> - ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS); - - if (il_is_ht40_tx_allowed(il, &sta->ht_cap)) - sta_flags |= STA_FLG_HT40_EN_MSK; - else - sta_flags &= ~STA_FLG_HT40_EN_MSK; - - il->stations[idx].sta.station_flags = sta_flags; -done: - return; -} - -/** - * il_prep_station - Prepare station information for addition - * - * should be called with sta_lock held - */ -u8 -il_prep_station(struct il_priv *il, const u8 *addr, bool is_ap, - struct ieee80211_sta *sta) -{ - struct il_station_entry *station; - int i; - u8 sta_id = IL_INVALID_STATION; - u16 rate; - - if (is_ap) - sta_id = IL_AP_ID; - else if (is_broadcast_ether_addr(addr)) - sta_id = il->hw_params.bcast_id; - else - for (i = IL_STA_ID; i < il->hw_params.max_stations; i++) { - if (ether_addr_equal(il->stations[i].sta.sta.addr, - addr)) { - sta_id = i; - break; - } - - if (!il->stations[i].used && - sta_id == IL_INVALID_STATION) - sta_id = i; - } - - /* - * These two conditions have the same outcome, but keep them - * separate - */ - if (unlikely(sta_id == IL_INVALID_STATION)) - return sta_id; - - /* - * uCode is not able to deal with multiple requests to add a - * station. Keep track if one is in progress so that we do not send - * another. - */ - if (il->stations[sta_id].used & IL_STA_UCODE_INPROGRESS) { - D_INFO("STA %d already in process of being added.\n", sta_id); - return sta_id; - } - - if ((il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE) && - (il->stations[sta_id].used & IL_STA_UCODE_ACTIVE) && - ether_addr_equal(il->stations[sta_id].sta.sta.addr, addr)) { - D_ASSOC("STA %d (%pM) already added, not adding again.\n", - sta_id, addr); - return sta_id; - } - - station = &il->stations[sta_id]; - station->used = IL_STA_DRIVER_ACTIVE; - D_ASSOC("Add STA to driver ID %d: %pM\n", sta_id, addr); - il->num_stations++; - - /* Set up the C_ADD_STA command to send to device */ - memset(&station->sta, 0, sizeof(struct il_addsta_cmd)); - memcpy(station->sta.sta.addr, addr, ETH_ALEN); - station->sta.mode = 0; - station->sta.sta.sta_id = sta_id; - station->sta.station_flags = 0; - - /* - * OK to call unconditionally, since local stations (IBSS BSSID - * STA and broadcast STA) pass in a NULL sta, and mac80211 - * doesn't allow HT IBSS. - */ - il_set_ht_add_station(il, sta_id, sta); - - /* 3945 only */ - rate = (il->band == IEEE80211_BAND_5GHZ) ? RATE_6M_PLCP : RATE_1M_PLCP; - /* Turn on both antennas for the station... */ - station->sta.rate_n_flags = cpu_to_le16(rate | RATE_MCS_ANT_AB_MSK); - - return sta_id; - -} -EXPORT_SYMBOL_GPL(il_prep_station); - -#define STA_WAIT_TIMEOUT (HZ/2) - -/** - * il_add_station_common - - */ -int -il_add_station_common(struct il_priv *il, const u8 *addr, bool is_ap, - struct ieee80211_sta *sta, u8 *sta_id_r) -{ - unsigned long flags_spin; - int ret = 0; - u8 sta_id; - struct il_addsta_cmd sta_cmd; - - *sta_id_r = 0; - spin_lock_irqsave(&il->sta_lock, flags_spin); - sta_id = il_prep_station(il, addr, is_ap, sta); - if (sta_id == IL_INVALID_STATION) { - IL_ERR("Unable to prepare station %pM for addition\n", addr); - spin_unlock_irqrestore(&il->sta_lock, flags_spin); - return -EINVAL; - } - - /* - * uCode is not able to deal with multiple requests to add a - * station. Keep track if one is in progress so that we do not send - * another. - */ - if (il->stations[sta_id].used & IL_STA_UCODE_INPROGRESS) { - D_INFO("STA %d already in process of being added.\n", sta_id); - spin_unlock_irqrestore(&il->sta_lock, flags_spin); - return -EEXIST; - } - - if ((il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE) && - (il->stations[sta_id].used & IL_STA_UCODE_ACTIVE)) { - D_ASSOC("STA %d (%pM) already added, not adding again.\n", - sta_id, addr); - spin_unlock_irqrestore(&il->sta_lock, flags_spin); - return -EEXIST; - } - - il->stations[sta_id].used |= IL_STA_UCODE_INPROGRESS; - memcpy(&sta_cmd, &il->stations[sta_id].sta, - sizeof(struct il_addsta_cmd)); - spin_unlock_irqrestore(&il->sta_lock, flags_spin); - - /* Add station to device's station table */ - ret = il_send_add_sta(il, &sta_cmd, CMD_SYNC); - if (ret) { - spin_lock_irqsave(&il->sta_lock, flags_spin); - IL_ERR("Adding station %pM failed.\n", - il->stations[sta_id].sta.sta.addr); - il->stations[sta_id].used &= ~IL_STA_DRIVER_ACTIVE; - il->stations[sta_id].used &= ~IL_STA_UCODE_INPROGRESS; - spin_unlock_irqrestore(&il->sta_lock, flags_spin); - } - *sta_id_r = sta_id; - return ret; -} -EXPORT_SYMBOL(il_add_station_common); - -/** - * il_sta_ucode_deactivate - deactivate ucode status for a station - * - * il->sta_lock must be held - */ -static void -il_sta_ucode_deactivate(struct il_priv *il, u8 sta_id) -{ - /* Ucode must be active and driver must be non active */ - if ((il->stations[sta_id]. - used & (IL_STA_UCODE_ACTIVE | IL_STA_DRIVER_ACTIVE)) != - IL_STA_UCODE_ACTIVE) - IL_ERR("removed non active STA %u\n", sta_id); - - il->stations[sta_id].used &= ~IL_STA_UCODE_ACTIVE; - - memset(&il->stations[sta_id], 0, sizeof(struct il_station_entry)); - D_ASSOC("Removed STA %u\n", sta_id); -} - -static int -il_send_remove_station(struct il_priv *il, const u8 * addr, int sta_id, - bool temporary) -{ - struct il_rx_pkt *pkt; - int ret; - - unsigned long flags_spin; - struct il_rem_sta_cmd rm_sta_cmd; - - struct il_host_cmd cmd = { - .id = C_REM_STA, - .len = sizeof(struct il_rem_sta_cmd), - .flags = CMD_SYNC, - .data = &rm_sta_cmd, - }; - - memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd)); - rm_sta_cmd.num_sta = 1; - memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN); - - cmd.flags |= CMD_WANT_SKB; - - ret = il_send_cmd(il, &cmd); - - if (ret) - return ret; - - pkt = (struct il_rx_pkt *)cmd.reply_page; - if (pkt->hdr.flags & IL_CMD_FAILED_MSK) { - IL_ERR("Bad return from C_REM_STA (0x%08X)\n", pkt->hdr.flags); - ret = -EIO; - } - - if (!ret) { - switch (pkt->u.rem_sta.status) { - case REM_STA_SUCCESS_MSK: - if (!temporary) { - spin_lock_irqsave(&il->sta_lock, flags_spin); - il_sta_ucode_deactivate(il, sta_id); - spin_unlock_irqrestore(&il->sta_lock, - flags_spin); - } - D_ASSOC("C_REM_STA PASSED\n"); - break; - default: - ret = -EIO; - IL_ERR("C_REM_STA failed\n"); - break; - } - } - il_free_pages(il, cmd.reply_page); - - return ret; -} - -/** - * il_remove_station - Remove driver's knowledge of station. - */ -int -il_remove_station(struct il_priv *il, const u8 sta_id, const u8 * addr) -{ - unsigned long flags; - - if (!il_is_ready(il)) { - D_INFO("Unable to remove station %pM, device not ready.\n", - addr); - /* - * It is typical for stations to be removed when we are - * going down. Return success since device will be down - * soon anyway - */ - return 0; - } - - D_ASSOC("Removing STA from driver:%d %pM\n", sta_id, addr); - - if (WARN_ON(sta_id == IL_INVALID_STATION)) - return -EINVAL; - - spin_lock_irqsave(&il->sta_lock, flags); - - if (!(il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE)) { - D_INFO("Removing %pM but non DRIVER active\n", addr); - goto out_err; - } - - if (!(il->stations[sta_id].used & IL_STA_UCODE_ACTIVE)) { - D_INFO("Removing %pM but non UCODE active\n", addr); - goto out_err; - } - - if (il->stations[sta_id].used & IL_STA_LOCAL) { - kfree(il->stations[sta_id].lq); - il->stations[sta_id].lq = NULL; - } - - il->stations[sta_id].used &= ~IL_STA_DRIVER_ACTIVE; - - il->num_stations--; - - BUG_ON(il->num_stations < 0); - - spin_unlock_irqrestore(&il->sta_lock, flags); - - return il_send_remove_station(il, addr, sta_id, false); -out_err: - spin_unlock_irqrestore(&il->sta_lock, flags); - return -EINVAL; -} -EXPORT_SYMBOL_GPL(il_remove_station); - -/** - * il_clear_ucode_stations - clear ucode station table bits - * - * This function clears all the bits in the driver indicating - * which stations are active in the ucode. Call when something - * other than explicit station management would cause this in - * the ucode, e.g. unassociated RXON. - */ -void -il_clear_ucode_stations(struct il_priv *il) -{ - int i; - unsigned long flags_spin; - bool cleared = false; - - D_INFO("Clearing ucode stations in driver\n"); - - spin_lock_irqsave(&il->sta_lock, flags_spin); - for (i = 0; i < il->hw_params.max_stations; i++) { - if (il->stations[i].used & IL_STA_UCODE_ACTIVE) { - D_INFO("Clearing ucode active for station %d\n", i); - il->stations[i].used &= ~IL_STA_UCODE_ACTIVE; - cleared = true; - } - } - spin_unlock_irqrestore(&il->sta_lock, flags_spin); - - if (!cleared) - D_INFO("No active stations found to be cleared\n"); -} -EXPORT_SYMBOL(il_clear_ucode_stations); - -/** - * il_restore_stations() - Restore driver known stations to device - * - * All stations considered active by driver, but not present in ucode, is - * restored. - * - * Function sleeps. - */ -void -il_restore_stations(struct il_priv *il) -{ - struct il_addsta_cmd sta_cmd; - struct il_link_quality_cmd lq; - unsigned long flags_spin; - int i; - bool found = false; - int ret; - bool send_lq; - - if (!il_is_ready(il)) { - D_INFO("Not ready yet, not restoring any stations.\n"); - return; - } - - D_ASSOC("Restoring all known stations ... start.\n"); - spin_lock_irqsave(&il->sta_lock, flags_spin); - for (i = 0; i < il->hw_params.max_stations; i++) { - if ((il->stations[i].used & IL_STA_DRIVER_ACTIVE) && - !(il->stations[i].used & IL_STA_UCODE_ACTIVE)) { - D_ASSOC("Restoring sta %pM\n", - il->stations[i].sta.sta.addr); - il->stations[i].sta.mode = 0; - il->stations[i].used |= IL_STA_UCODE_INPROGRESS; - found = true; - } - } - - for (i = 0; i < il->hw_params.max_stations; i++) { - if ((il->stations[i].used & IL_STA_UCODE_INPROGRESS)) { - memcpy(&sta_cmd, &il->stations[i].sta, - sizeof(struct il_addsta_cmd)); - send_lq = false; - if (il->stations[i].lq) { - memcpy(&lq, il->stations[i].lq, - sizeof(struct il_link_quality_cmd)); - send_lq = true; - } - spin_unlock_irqrestore(&il->sta_lock, flags_spin); - ret = il_send_add_sta(il, &sta_cmd, CMD_SYNC); - if (ret) { - spin_lock_irqsave(&il->sta_lock, flags_spin); - IL_ERR("Adding station %pM failed.\n", - il->stations[i].sta.sta.addr); - il->stations[i].used &= ~IL_STA_DRIVER_ACTIVE; - il->stations[i].used &= - ~IL_STA_UCODE_INPROGRESS; - spin_unlock_irqrestore(&il->sta_lock, - flags_spin); - } - /* - * Rate scaling has already been initialized, send - * current LQ command - */ - if (send_lq) - il_send_lq_cmd(il, &lq, CMD_SYNC, true); - spin_lock_irqsave(&il->sta_lock, flags_spin); - il->stations[i].used &= ~IL_STA_UCODE_INPROGRESS; - } - } - - spin_unlock_irqrestore(&il->sta_lock, flags_spin); - if (!found) - D_INFO("Restoring all known stations" - " .... no stations to be restored.\n"); - else - D_INFO("Restoring all known stations" " .... complete.\n"); -} -EXPORT_SYMBOL(il_restore_stations); - -int -il_get_free_ucode_key_idx(struct il_priv *il) -{ - int i; - - for (i = 0; i < il->sta_key_max_num; i++) - if (!test_and_set_bit(i, &il->ucode_key_table)) - return i; - - return WEP_INVALID_OFFSET; -} -EXPORT_SYMBOL(il_get_free_ucode_key_idx); - -void -il_dealloc_bcast_stations(struct il_priv *il) -{ - unsigned long flags; - int i; - - spin_lock_irqsave(&il->sta_lock, flags); - for (i = 0; i < il->hw_params.max_stations; i++) { - if (!(il->stations[i].used & IL_STA_BCAST)) - continue; - - il->stations[i].used &= ~IL_STA_UCODE_ACTIVE; - il->num_stations--; - BUG_ON(il->num_stations < 0); - kfree(il->stations[i].lq); - il->stations[i].lq = NULL; - } - spin_unlock_irqrestore(&il->sta_lock, flags); -} -EXPORT_SYMBOL_GPL(il_dealloc_bcast_stations); - -#ifdef CONFIG_IWLEGACY_DEBUG -static void -il_dump_lq_cmd(struct il_priv *il, struct il_link_quality_cmd *lq) -{ - int i; - D_RATE("lq station id 0x%x\n", lq->sta_id); - D_RATE("lq ant 0x%X 0x%X\n", lq->general_params.single_stream_ant_msk, - lq->general_params.dual_stream_ant_msk); - - for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) - D_RATE("lq idx %d 0x%X\n", i, lq->rs_table[i].rate_n_flags); -} -#else -static inline void -il_dump_lq_cmd(struct il_priv *il, struct il_link_quality_cmd *lq) -{ -} -#endif - -/** - * il_is_lq_table_valid() - Test one aspect of LQ cmd for validity - * - * It sometimes happens when a HT rate has been in use and we - * loose connectivity with AP then mac80211 will first tell us that the - * current channel is not HT anymore before removing the station. In such a - * scenario the RXON flags will be updated to indicate we are not - * communicating HT anymore, but the LQ command may still contain HT rates. - * Test for this to prevent driver from sending LQ command between the time - * RXON flags are updated and when LQ command is updated. - */ -static bool -il_is_lq_table_valid(struct il_priv *il, struct il_link_quality_cmd *lq) -{ - int i; - - if (il->ht.enabled) - return true; - - D_INFO("Channel %u is not an HT channel\n", il->active.channel); - for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { - if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & RATE_MCS_HT_MSK) { - D_INFO("idx %d of LQ expects HT channel\n", i); - return false; - } - } - return true; -} - -/** - * il_send_lq_cmd() - Send link quality command - * @init: This command is sent as part of station initialization right - * after station has been added. - * - * The link quality command is sent as the last step of station creation. - * This is the special case in which init is set and we call a callback in - * this case to clear the state indicating that station creation is in - * progress. - */ -int -il_send_lq_cmd(struct il_priv *il, struct il_link_quality_cmd *lq, - u8 flags, bool init) -{ - int ret = 0; - unsigned long flags_spin; - - struct il_host_cmd cmd = { - .id = C_TX_LINK_QUALITY_CMD, - .len = sizeof(struct il_link_quality_cmd), - .flags = flags, - .data = lq, - }; - - if (WARN_ON(lq->sta_id == IL_INVALID_STATION)) - return -EINVAL; - - spin_lock_irqsave(&il->sta_lock, flags_spin); - if (!(il->stations[lq->sta_id].used & IL_STA_DRIVER_ACTIVE)) { - spin_unlock_irqrestore(&il->sta_lock, flags_spin); - return -EINVAL; - } - spin_unlock_irqrestore(&il->sta_lock, flags_spin); - - il_dump_lq_cmd(il, lq); - BUG_ON(init && (cmd.flags & CMD_ASYNC)); - - if (il_is_lq_table_valid(il, lq)) - ret = il_send_cmd(il, &cmd); - else - ret = -EINVAL; - - if (cmd.flags & CMD_ASYNC) - return ret; - - if (init) { - D_INFO("init LQ command complete," - " clearing sta addition status for sta %d\n", - lq->sta_id); - spin_lock_irqsave(&il->sta_lock, flags_spin); - il->stations[lq->sta_id].used &= ~IL_STA_UCODE_INPROGRESS; - spin_unlock_irqrestore(&il->sta_lock, flags_spin); - } - return ret; -} -EXPORT_SYMBOL(il_send_lq_cmd); - -int -il_mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - struct ieee80211_sta *sta) -{ - struct il_priv *il = hw->priv; - struct il_station_priv_common *sta_common = (void *)sta->drv_priv; - int ret; - - mutex_lock(&il->mutex); - D_MAC80211("enter station %pM\n", sta->addr); - - ret = il_remove_station(il, sta_common->sta_id, sta->addr); - if (ret) - IL_ERR("Error removing station %pM\n", sta->addr); - - D_MAC80211("leave ret %d\n", ret); - mutex_unlock(&il->mutex); - - return ret; -} -EXPORT_SYMBOL(il_mac_sta_remove); - -/************************** RX-FUNCTIONS ****************************/ -/* - * Rx theory of operation - * - * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs), - * each of which point to Receive Buffers to be filled by the NIC. These get - * used not only for Rx frames, but for any command response or notification - * from the NIC. The driver and NIC manage the Rx buffers by means - * of idxes into the circular buffer. - * - * Rx Queue Indexes - * The host/firmware share two idx registers for managing the Rx buffers. - * - * The READ idx maps to the first position that the firmware may be writing - * to -- the driver can read up to (but not including) this position and get - * good data. - * The READ idx is managed by the firmware once the card is enabled. - * - * The WRITE idx maps to the last position the driver has read from -- the - * position preceding WRITE is the last slot the firmware can place a packet. - * - * The queue is empty (no good data) if WRITE = READ - 1, and is full if - * WRITE = READ. - * - * During initialization, the host sets up the READ queue position to the first - * IDX position, and WRITE to the last (READ - 1 wrapped) - * - * When the firmware places a packet in a buffer, it will advance the READ idx - * and fire the RX interrupt. The driver can then query the READ idx and - * process as many packets as possible, moving the WRITE idx forward as it - * resets the Rx queue buffers with new memory. - * - * The management in the driver is as follows: - * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When - * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled - * to replenish the iwl->rxq->rx_free. - * + In il_rx_replenish (scheduled) if 'processed' != 'read' then the - * iwl->rxq is replenished and the READ IDX is updated (updating the - * 'processed' and 'read' driver idxes as well) - * + A received packet is processed and handed to the kernel network stack, - * detached from the iwl->rxq. The driver 'processed' idx is updated. - * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free - * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ - * IDX is not incremented and iwl->status(RX_STALLED) is set. If there - * were enough free buffers and RX_STALLED is set it is cleared. - * - * - * Driver sequence: - * - * il_rx_queue_alloc() Allocates rx_free - * il_rx_replenish() Replenishes rx_free list from rx_used, and calls - * il_rx_queue_restock - * il_rx_queue_restock() Moves available buffers from rx_free into Rx - * queue, updates firmware pointers, and updates - * the WRITE idx. If insufficient rx_free buffers - * are available, schedules il_rx_replenish - * - * -- enable interrupts -- - * ISR - il_rx() Detach il_rx_bufs from pool up to the - * READ IDX, detaching the SKB from the pool. - * Moves the packet buffer from queue to rx_used. - * Calls il_rx_queue_restock to refill any empty - * slots. - * ... - * - */ - -/** - * il_rx_queue_space - Return number of free slots available in queue. - */ -int -il_rx_queue_space(const struct il_rx_queue *q) -{ - int s = q->read - q->write; - if (s <= 0) - s += RX_QUEUE_SIZE; - /* keep some buffer to not confuse full and empty queue */ - s -= 2; - if (s < 0) - s = 0; - return s; -} -EXPORT_SYMBOL(il_rx_queue_space); - -/** - * il_rx_queue_update_write_ptr - Update the write pointer for the RX queue - */ -void -il_rx_queue_update_write_ptr(struct il_priv *il, struct il_rx_queue *q) -{ - unsigned long flags; - u32 rx_wrt_ptr_reg = il->hw_params.rx_wrt_ptr_reg; - u32 reg; - - spin_lock_irqsave(&q->lock, flags); - - if (q->need_update == 0) - goto exit_unlock; - - /* If power-saving is in use, make sure device is awake */ - if (test_bit(S_POWER_PMI, &il->status)) { - reg = _il_rd(il, CSR_UCODE_DRV_GP1); - - if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) { - D_INFO("Rx queue requesting wakeup," " GP1 = 0x%x\n", - reg); - il_set_bit(il, CSR_GP_CNTRL, - CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); - goto exit_unlock; - } - - q->write_actual = (q->write & ~0x7); - il_wr(il, rx_wrt_ptr_reg, q->write_actual); - - /* Else device is assumed to be awake */ - } else { - /* Device expects a multiple of 8 */ - q->write_actual = (q->write & ~0x7); - il_wr(il, rx_wrt_ptr_reg, q->write_actual); - } - - q->need_update = 0; - -exit_unlock: - spin_unlock_irqrestore(&q->lock, flags); -} -EXPORT_SYMBOL(il_rx_queue_update_write_ptr); - -int -il_rx_queue_alloc(struct il_priv *il) -{ - struct il_rx_queue *rxq = &il->rxq; - struct device *dev = &il->pci_dev->dev; - int i; - - spin_lock_init(&rxq->lock); - INIT_LIST_HEAD(&rxq->rx_free); - INIT_LIST_HEAD(&rxq->rx_used); - - /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */ - rxq->bd = dma_alloc_coherent(dev, 4 * RX_QUEUE_SIZE, &rxq->bd_dma, - GFP_KERNEL); - if (!rxq->bd) - goto err_bd; - - rxq->rb_stts = dma_alloc_coherent(dev, sizeof(struct il_rb_status), - &rxq->rb_stts_dma, GFP_KERNEL); - if (!rxq->rb_stts) - goto err_rb; - - /* Fill the rx_used queue with _all_ of the Rx buffers */ - for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) - list_add_tail(&rxq->pool[i].list, &rxq->rx_used); - - /* Set us so that we have processed and used all buffers, but have - * not restocked the Rx queue with fresh buffers */ - rxq->read = rxq->write = 0; - rxq->write_actual = 0; - rxq->free_count = 0; - rxq->need_update = 0; - return 0; - -err_rb: - dma_free_coherent(&il->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd, - rxq->bd_dma); -err_bd: - return -ENOMEM; -} -EXPORT_SYMBOL(il_rx_queue_alloc); - -void -il_hdl_spectrum_measurement(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - struct il_spectrum_notification *report = &(pkt->u.spectrum_notif); - - if (!report->state) { - D_11H("Spectrum Measure Notification: Start\n"); - return; - } - - memcpy(&il->measure_report, report, sizeof(*report)); - il->measurement_status |= MEASUREMENT_READY; -} -EXPORT_SYMBOL(il_hdl_spectrum_measurement); - -/* - * returns non-zero if packet should be dropped - */ -int -il_set_decrypted_flag(struct il_priv *il, struct ieee80211_hdr *hdr, - u32 decrypt_res, struct ieee80211_rx_status *stats) -{ - u16 fc = le16_to_cpu(hdr->frame_control); - - /* - * All contexts have the same setting here due to it being - * a module parameter, so OK to check any context. - */ - if (il->active.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK) - return 0; - - if (!(fc & IEEE80211_FCTL_PROTECTED)) - return 0; - - D_RX("decrypt_res:0x%x\n", decrypt_res); - switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) { - case RX_RES_STATUS_SEC_TYPE_TKIP: - /* The uCode has got a bad phase 1 Key, pushes the packet. - * Decryption will be done in SW. */ - if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == - RX_RES_STATUS_BAD_KEY_TTAK) - break; - - case RX_RES_STATUS_SEC_TYPE_WEP: - if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == - RX_RES_STATUS_BAD_ICV_MIC) { - /* bad ICV, the packet is destroyed since the - * decryption is inplace, drop it */ - D_RX("Packet destroyed\n"); - return -1; - } - case RX_RES_STATUS_SEC_TYPE_CCMP: - if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == - RX_RES_STATUS_DECRYPT_OK) { - D_RX("hw decrypt successfully!!!\n"); - stats->flag |= RX_FLAG_DECRYPTED; - } - break; - - default: - break; - } - return 0; -} -EXPORT_SYMBOL(il_set_decrypted_flag); - -/** - * il_txq_update_write_ptr - Send new write idx to hardware - */ -void -il_txq_update_write_ptr(struct il_priv *il, struct il_tx_queue *txq) -{ - u32 reg = 0; - int txq_id = txq->q.id; - - if (txq->need_update == 0) - return; - - /* if we're trying to save power */ - if (test_bit(S_POWER_PMI, &il->status)) { - /* wake up nic if it's powered down ... - * uCode will wake up, and interrupt us again, so next - * time we'll skip this part. */ - reg = _il_rd(il, CSR_UCODE_DRV_GP1); - - if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) { - D_INFO("Tx queue %d requesting wakeup," " GP1 = 0x%x\n", - txq_id, reg); - il_set_bit(il, CSR_GP_CNTRL, - CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); - return; - } - - il_wr(il, HBUS_TARG_WRPTR, txq->q.write_ptr | (txq_id << 8)); - - /* - * else not in power-save mode, - * uCode will never sleep when we're - * trying to tx (during RFKILL, we're not trying to tx). - */ - } else - _il_wr(il, HBUS_TARG_WRPTR, txq->q.write_ptr | (txq_id << 8)); - txq->need_update = 0; -} -EXPORT_SYMBOL(il_txq_update_write_ptr); - -/** - * il_tx_queue_unmap - Unmap any remaining DMA mappings and free skb's - */ -void -il_tx_queue_unmap(struct il_priv *il, int txq_id) -{ - struct il_tx_queue *txq = &il->txq[txq_id]; - struct il_queue *q = &txq->q; - - if (q->n_bd == 0) - return; - - while (q->write_ptr != q->read_ptr) { - il->ops->txq_free_tfd(il, txq); - q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd); - } -} -EXPORT_SYMBOL(il_tx_queue_unmap); - -/** - * il_tx_queue_free - Deallocate DMA queue. - * @txq: Transmit queue to deallocate. - * - * Empty queue by removing and destroying all BD's. - * Free all buffers. - * 0-fill, but do not free "txq" descriptor structure. - */ -void -il_tx_queue_free(struct il_priv *il, int txq_id) -{ - struct il_tx_queue *txq = &il->txq[txq_id]; - struct device *dev = &il->pci_dev->dev; - int i; - - il_tx_queue_unmap(il, txq_id); - - /* De-alloc array of command/tx buffers */ - for (i = 0; i < TFD_TX_CMD_SLOTS; i++) - kfree(txq->cmd[i]); - - /* De-alloc circular buffer of TFDs */ - if (txq->q.n_bd) - dma_free_coherent(dev, il->hw_params.tfd_size * txq->q.n_bd, - txq->tfds, txq->q.dma_addr); - - /* De-alloc array of per-TFD driver data */ - kfree(txq->skbs); - txq->skbs = NULL; - - /* deallocate arrays */ - kfree(txq->cmd); - kfree(txq->meta); - txq->cmd = NULL; - txq->meta = NULL; - - /* 0-fill queue descriptor structure */ - memset(txq, 0, sizeof(*txq)); -} -EXPORT_SYMBOL(il_tx_queue_free); - -/** - * il_cmd_queue_unmap - Unmap any remaining DMA mappings from command queue - */ -void -il_cmd_queue_unmap(struct il_priv *il) -{ - struct il_tx_queue *txq = &il->txq[il->cmd_queue]; - struct il_queue *q = &txq->q; - int i; - - if (q->n_bd == 0) - return; - - while (q->read_ptr != q->write_ptr) { - i = il_get_cmd_idx(q, q->read_ptr, 0); - - if (txq->meta[i].flags & CMD_MAPPED) { - pci_unmap_single(il->pci_dev, - dma_unmap_addr(&txq->meta[i], mapping), - dma_unmap_len(&txq->meta[i], len), - PCI_DMA_BIDIRECTIONAL); - txq->meta[i].flags = 0; - } - - q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd); - } - - i = q->n_win; - if (txq->meta[i].flags & CMD_MAPPED) { - pci_unmap_single(il->pci_dev, - dma_unmap_addr(&txq->meta[i], mapping), - dma_unmap_len(&txq->meta[i], len), - PCI_DMA_BIDIRECTIONAL); - txq->meta[i].flags = 0; - } -} -EXPORT_SYMBOL(il_cmd_queue_unmap); - -/** - * il_cmd_queue_free - Deallocate DMA queue. - * @txq: Transmit queue to deallocate. - * - * Empty queue by removing and destroying all BD's. - * Free all buffers. - * 0-fill, but do not free "txq" descriptor structure. - */ -void -il_cmd_queue_free(struct il_priv *il) -{ - struct il_tx_queue *txq = &il->txq[il->cmd_queue]; - struct device *dev = &il->pci_dev->dev; - int i; - - il_cmd_queue_unmap(il); - - /* De-alloc array of command/tx buffers */ - for (i = 0; i <= TFD_CMD_SLOTS; i++) - kfree(txq->cmd[i]); - - /* De-alloc circular buffer of TFDs */ - if (txq->q.n_bd) - dma_free_coherent(dev, il->hw_params.tfd_size * txq->q.n_bd, - txq->tfds, txq->q.dma_addr); - - /* deallocate arrays */ - kfree(txq->cmd); - kfree(txq->meta); - txq->cmd = NULL; - txq->meta = NULL; - - /* 0-fill queue descriptor structure */ - memset(txq, 0, sizeof(*txq)); -} -EXPORT_SYMBOL(il_cmd_queue_free); - -/*************** DMA-QUEUE-GENERAL-FUNCTIONS ***** - * DMA services - * - * Theory of operation - * - * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer - * of buffer descriptors, each of which points to one or more data buffers for - * the device to read from or fill. Driver and device exchange status of each - * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty - * entries in each circular buffer, to protect against confusing empty and full - * queue states. - * - * The device reads or writes the data in the queues via the device's several - * DMA/FIFO channels. Each queue is mapped to a single DMA channel. - * - * For Tx queue, there are low mark and high mark limits. If, after queuing - * the packet for Tx, free space become < low mark, Tx queue stopped. When - * reclaiming packets (on 'tx done IRQ), if free space become > high mark, - * Tx queue resumed. - * - * See more detailed info in 4965.h. - ***************************************************/ - -int -il_queue_space(const struct il_queue *q) -{ - int s = q->read_ptr - q->write_ptr; - - if (q->read_ptr > q->write_ptr) - s -= q->n_bd; - - if (s <= 0) - s += q->n_win; - /* keep some reserve to not confuse empty and full situations */ - s -= 2; - if (s < 0) - s = 0; - return s; -} -EXPORT_SYMBOL(il_queue_space); - - -/** - * il_queue_init - Initialize queue's high/low-water and read/write idxes - */ -static int -il_queue_init(struct il_priv *il, struct il_queue *q, int slots, u32 id) -{ - /* - * TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise - * il_queue_inc_wrap and il_queue_dec_wrap are broken. - */ - BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1)); - /* FIXME: remove q->n_bd */ - q->n_bd = TFD_QUEUE_SIZE_MAX; - - q->n_win = slots; - q->id = id; - - /* slots_must be power-of-two size, otherwise - * il_get_cmd_idx is broken. */ - BUG_ON(!is_power_of_2(slots)); - - q->low_mark = q->n_win / 4; - if (q->low_mark < 4) - q->low_mark = 4; - - q->high_mark = q->n_win / 8; - if (q->high_mark < 2) - q->high_mark = 2; - - q->write_ptr = q->read_ptr = 0; - - return 0; -} - -/** - * il_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue - */ -static int -il_tx_queue_alloc(struct il_priv *il, struct il_tx_queue *txq, u32 id) -{ - struct device *dev = &il->pci_dev->dev; - size_t tfd_sz = il->hw_params.tfd_size * TFD_QUEUE_SIZE_MAX; - - /* Driver ilate data, only for Tx (not command) queues, - * not shared with device. */ - if (id != il->cmd_queue) { - txq->skbs = kcalloc(TFD_QUEUE_SIZE_MAX, - sizeof(struct sk_buff *), - GFP_KERNEL); - if (!txq->skbs) { - IL_ERR("Fail to alloc skbs\n"); - goto error; - } - } else - txq->skbs = NULL; - - /* Circular buffer of transmit frame descriptors (TFDs), - * shared with device */ - txq->tfds = - dma_alloc_coherent(dev, tfd_sz, &txq->q.dma_addr, GFP_KERNEL); - if (!txq->tfds) - goto error; - - txq->q.id = id; - - return 0; - -error: - kfree(txq->skbs); - txq->skbs = NULL; - - return -ENOMEM; -} - -/** - * il_tx_queue_init - Allocate and initialize one tx/cmd queue - */ -int -il_tx_queue_init(struct il_priv *il, u32 txq_id) -{ - int i, len, ret; - int slots, actual_slots; - struct il_tx_queue *txq = &il->txq[txq_id]; - - /* - * Alloc buffer array for commands (Tx or other types of commands). - * For the command queue (#4/#9), allocate command space + one big - * command for scan, since scan command is very huge; the system will - * not have two scans at the same time, so only one is needed. - * For normal Tx queues (all other queues), no super-size command - * space is needed. - */ - if (txq_id == il->cmd_queue) { - slots = TFD_CMD_SLOTS; - actual_slots = slots + 1; - } else { - slots = TFD_TX_CMD_SLOTS; - actual_slots = slots; - } - - txq->meta = - kzalloc(sizeof(struct il_cmd_meta) * actual_slots, GFP_KERNEL); - txq->cmd = - kzalloc(sizeof(struct il_device_cmd *) * actual_slots, GFP_KERNEL); - - if (!txq->meta || !txq->cmd) - goto out_free_arrays; - - len = sizeof(struct il_device_cmd); - for (i = 0; i < actual_slots; i++) { - /* only happens for cmd queue */ - if (i == slots) - len = IL_MAX_CMD_SIZE; - - txq->cmd[i] = kmalloc(len, GFP_KERNEL); - if (!txq->cmd[i]) - goto err; - } - - /* Alloc driver data array and TFD circular buffer */ - ret = il_tx_queue_alloc(il, txq, txq_id); - if (ret) - goto err; - - txq->need_update = 0; - - /* - * For the default queues 0-3, set up the swq_id - * already -- all others need to get one later - * (if they need one at all). - */ - if (txq_id < 4) - il_set_swq_id(txq, txq_id, txq_id); - - /* Initialize queue's high/low-water marks, and head/tail idxes */ - il_queue_init(il, &txq->q, slots, txq_id); - - /* Tell device where to find queue */ - il->ops->txq_init(il, txq); - - return 0; -err: - for (i = 0; i < actual_slots; i++) - kfree(txq->cmd[i]); -out_free_arrays: - kfree(txq->meta); - kfree(txq->cmd); - - return -ENOMEM; -} -EXPORT_SYMBOL(il_tx_queue_init); - -void -il_tx_queue_reset(struct il_priv *il, u32 txq_id) -{ - int slots, actual_slots; - struct il_tx_queue *txq = &il->txq[txq_id]; - - if (txq_id == il->cmd_queue) { - slots = TFD_CMD_SLOTS; - actual_slots = TFD_CMD_SLOTS + 1; - } else { - slots = TFD_TX_CMD_SLOTS; - actual_slots = TFD_TX_CMD_SLOTS; - } - - memset(txq->meta, 0, sizeof(struct il_cmd_meta) * actual_slots); - txq->need_update = 0; - - /* Initialize queue's high/low-water marks, and head/tail idxes */ - il_queue_init(il, &txq->q, slots, txq_id); - - /* Tell device where to find queue */ - il->ops->txq_init(il, txq); -} -EXPORT_SYMBOL(il_tx_queue_reset); - -/*************** HOST COMMAND QUEUE FUNCTIONS *****/ - -/** - * il_enqueue_hcmd - enqueue a uCode command - * @il: device ilate data point - * @cmd: a point to the ucode command structure - * - * The function returns < 0 values to indicate the operation is - * failed. On success, it turns the idx (> 0) of command in the - * command queue. - */ -int -il_enqueue_hcmd(struct il_priv *il, struct il_host_cmd *cmd) -{ - struct il_tx_queue *txq = &il->txq[il->cmd_queue]; - struct il_queue *q = &txq->q; - struct il_device_cmd *out_cmd; - struct il_cmd_meta *out_meta; - dma_addr_t phys_addr; - unsigned long flags; - int len; - u32 idx; - u16 fix_size; - - cmd->len = il->ops->get_hcmd_size(cmd->id, cmd->len); - fix_size = (u16) (cmd->len + sizeof(out_cmd->hdr)); - - /* If any of the command structures end up being larger than - * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then - * we will need to increase the size of the TFD entries - * Also, check to see if command buffer should not exceed the size - * of device_cmd and max_cmd_size. */ - BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) && - !(cmd->flags & CMD_SIZE_HUGE)); - BUG_ON(fix_size > IL_MAX_CMD_SIZE); - - if (il_is_rfkill(il) || il_is_ctkill(il)) { - IL_WARN("Not sending command - %s KILL\n", - il_is_rfkill(il) ? "RF" : "CT"); - return -EIO; - } - - spin_lock_irqsave(&il->hcmd_lock, flags); - - if (il_queue_space(q) < ((cmd->flags & CMD_ASYNC) ? 2 : 1)) { - spin_unlock_irqrestore(&il->hcmd_lock, flags); - - IL_ERR("Restarting adapter due to command queue full\n"); - queue_work(il->workqueue, &il->restart); - return -ENOSPC; - } - - idx = il_get_cmd_idx(q, q->write_ptr, cmd->flags & CMD_SIZE_HUGE); - out_cmd = txq->cmd[idx]; - out_meta = &txq->meta[idx]; - - if (WARN_ON(out_meta->flags & CMD_MAPPED)) { - spin_unlock_irqrestore(&il->hcmd_lock, flags); - return -ENOSPC; - } - - memset(out_meta, 0, sizeof(*out_meta)); /* re-initialize to NULL */ - out_meta->flags = cmd->flags | CMD_MAPPED; - if (cmd->flags & CMD_WANT_SKB) - out_meta->source = cmd; - if (cmd->flags & CMD_ASYNC) - out_meta->callback = cmd->callback; - - out_cmd->hdr.cmd = cmd->id; - memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len); - - /* At this point, the out_cmd now has all of the incoming cmd - * information */ - - out_cmd->hdr.flags = 0; - out_cmd->hdr.sequence = - cpu_to_le16(QUEUE_TO_SEQ(il->cmd_queue) | IDX_TO_SEQ(q->write_ptr)); - if (cmd->flags & CMD_SIZE_HUGE) - out_cmd->hdr.sequence |= SEQ_HUGE_FRAME; - len = sizeof(struct il_device_cmd); - if (idx == TFD_CMD_SLOTS) - len = IL_MAX_CMD_SIZE; - -#ifdef CONFIG_IWLEGACY_DEBUG - switch (out_cmd->hdr.cmd) { - case C_TX_LINK_QUALITY_CMD: - case C_SENSITIVITY: - D_HC_DUMP("Sending command %s (#%x), seq: 0x%04X, " - "%d bytes at %d[%d]:%d\n", - il_get_cmd_string(out_cmd->hdr.cmd), out_cmd->hdr.cmd, - le16_to_cpu(out_cmd->hdr.sequence), fix_size, - q->write_ptr, idx, il->cmd_queue); - break; - default: - D_HC("Sending command %s (#%x), seq: 0x%04X, " - "%d bytes at %d[%d]:%d\n", - il_get_cmd_string(out_cmd->hdr.cmd), out_cmd->hdr.cmd, - le16_to_cpu(out_cmd->hdr.sequence), fix_size, q->write_ptr, - idx, il->cmd_queue); - } -#endif - - phys_addr = - pci_map_single(il->pci_dev, &out_cmd->hdr, fix_size, - PCI_DMA_BIDIRECTIONAL); - if (unlikely(pci_dma_mapping_error(il->pci_dev, phys_addr))) { - idx = -ENOMEM; - goto out; - } - dma_unmap_addr_set(out_meta, mapping, phys_addr); - dma_unmap_len_set(out_meta, len, fix_size); - - txq->need_update = 1; - - if (il->ops->txq_update_byte_cnt_tbl) - /* Set up entry in queue's byte count circular buffer */ - il->ops->txq_update_byte_cnt_tbl(il, txq, 0); - - il->ops->txq_attach_buf_to_tfd(il, txq, phys_addr, fix_size, 1, - U32_PAD(cmd->len)); - - /* Increment and update queue's write idx */ - q->write_ptr = il_queue_inc_wrap(q->write_ptr, q->n_bd); - il_txq_update_write_ptr(il, txq); - -out: - spin_unlock_irqrestore(&il->hcmd_lock, flags); - return idx; -} - -/** - * il_hcmd_queue_reclaim - Reclaim TX command queue entries already Tx'd - * - * When FW advances 'R' idx, all entries between old and new 'R' idx - * need to be reclaimed. As result, some free space forms. If there is - * enough free space (> low mark), wake the stack that feeds us. - */ -static void -il_hcmd_queue_reclaim(struct il_priv *il, int txq_id, int idx, int cmd_idx) -{ - struct il_tx_queue *txq = &il->txq[txq_id]; - struct il_queue *q = &txq->q; - int nfreed = 0; - - if (idx >= q->n_bd || il_queue_used(q, idx) == 0) { - IL_ERR("Read idx for DMA queue txq id (%d), idx %d, " - "is out of range [0-%d] %d %d.\n", txq_id, idx, q->n_bd, - q->write_ptr, q->read_ptr); - return; - } - - for (idx = il_queue_inc_wrap(idx, q->n_bd); q->read_ptr != idx; - q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd)) { - - if (nfreed++ > 0) { - IL_ERR("HCMD skipped: idx (%d) %d %d\n", idx, - q->write_ptr, q->read_ptr); - queue_work(il->workqueue, &il->restart); - } - - } -} - -/** - * il_tx_cmd_complete - Pull unused buffers off the queue and reclaim them - * @rxb: Rx buffer to reclaim - * - * If an Rx buffer has an async callback associated with it the callback - * will be executed. The attached skb (if present) will only be freed - * if the callback returns 1 - */ -void -il_tx_cmd_complete(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - u16 sequence = le16_to_cpu(pkt->hdr.sequence); - int txq_id = SEQ_TO_QUEUE(sequence); - int idx = SEQ_TO_IDX(sequence); - int cmd_idx; - bool huge = !!(pkt->hdr.sequence & SEQ_HUGE_FRAME); - struct il_device_cmd *cmd; - struct il_cmd_meta *meta; - struct il_tx_queue *txq = &il->txq[il->cmd_queue]; - unsigned long flags; - - /* If a Tx command is being handled and it isn't in the actual - * command queue then there a command routing bug has been introduced - * in the queue management code. */ - if (WARN - (txq_id != il->cmd_queue, - "wrong command queue %d (should be %d), sequence 0x%X readp=%d writep=%d\n", - txq_id, il->cmd_queue, sequence, il->txq[il->cmd_queue].q.read_ptr, - il->txq[il->cmd_queue].q.write_ptr)) { - il_print_hex_error(il, pkt, 32); - return; - } - - cmd_idx = il_get_cmd_idx(&txq->q, idx, huge); - cmd = txq->cmd[cmd_idx]; - meta = &txq->meta[cmd_idx]; - - txq->time_stamp = jiffies; - - pci_unmap_single(il->pci_dev, dma_unmap_addr(meta, mapping), - dma_unmap_len(meta, len), PCI_DMA_BIDIRECTIONAL); - - /* Input error checking is done when commands are added to queue. */ - if (meta->flags & CMD_WANT_SKB) { - meta->source->reply_page = (unsigned long)rxb_addr(rxb); - rxb->page = NULL; - } else if (meta->callback) - meta->callback(il, cmd, pkt); - - spin_lock_irqsave(&il->hcmd_lock, flags); - - il_hcmd_queue_reclaim(il, txq_id, idx, cmd_idx); - - if (!(meta->flags & CMD_ASYNC)) { - clear_bit(S_HCMD_ACTIVE, &il->status); - D_INFO("Clearing HCMD_ACTIVE for command %s\n", - il_get_cmd_string(cmd->hdr.cmd)); - wake_up(&il->wait_command_queue); - } - - /* Mark as unmapped */ - meta->flags = 0; - - spin_unlock_irqrestore(&il->hcmd_lock, flags); -} -EXPORT_SYMBOL(il_tx_cmd_complete); - -MODULE_DESCRIPTION("iwl-legacy: common functions for 3945 and 4965"); -MODULE_VERSION(IWLWIFI_VERSION); -MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); -MODULE_LICENSE("GPL"); - -/* - * set bt_coex_active to true, uCode will do kill/defer - * every time the priority line is asserted (BT is sending signals on the - * priority line in the PCIx). - * set bt_coex_active to false, uCode will ignore the BT activity and - * perform the normal operation - * - * User might experience transmit issue on some platform due to WiFi/BT - * co-exist problem. The possible behaviors are: - * Able to scan and finding all the available AP - * Not able to associate with any AP - * On those platforms, WiFi communication can be restored by set - * "bt_coex_active" module parameter to "false" - * - * default: bt_coex_active = true (BT_COEX_ENABLE) - */ -static bool bt_coex_active = true; -module_param(bt_coex_active, bool, S_IRUGO); -MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist"); - -u32 il_debug_level; -EXPORT_SYMBOL(il_debug_level); - -const u8 il_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; -EXPORT_SYMBOL(il_bcast_addr); - -#define MAX_BIT_RATE_40_MHZ 150 /* Mbps */ -#define MAX_BIT_RATE_20_MHZ 72 /* Mbps */ -static void -il_init_ht_hw_capab(const struct il_priv *il, - struct ieee80211_sta_ht_cap *ht_info, - enum ieee80211_band band) -{ - u16 max_bit_rate = 0; - u8 rx_chains_num = il->hw_params.rx_chains_num; - u8 tx_chains_num = il->hw_params.tx_chains_num; - - ht_info->cap = 0; - memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); - - ht_info->ht_supported = true; - - ht_info->cap |= IEEE80211_HT_CAP_SGI_20; - max_bit_rate = MAX_BIT_RATE_20_MHZ; - if (il->hw_params.ht40_channel & BIT(band)) { - ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; - ht_info->cap |= IEEE80211_HT_CAP_SGI_40; - ht_info->mcs.rx_mask[4] = 0x01; - max_bit_rate = MAX_BIT_RATE_40_MHZ; - } - - if (il->cfg->mod_params->amsdu_size_8K) - ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU; - - ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF; - ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF; - - ht_info->mcs.rx_mask[0] = 0xFF; - if (rx_chains_num >= 2) - ht_info->mcs.rx_mask[1] = 0xFF; - if (rx_chains_num >= 3) - ht_info->mcs.rx_mask[2] = 0xFF; - - /* Highest supported Rx data rate */ - max_bit_rate *= rx_chains_num; - WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK); - ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate); - - /* Tx MCS capabilities */ - ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; - if (tx_chains_num != rx_chains_num) { - ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; - ht_info->mcs.tx_params |= - ((tx_chains_num - - 1) << IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT); - } -} - -/** - * il_init_geos - Initialize mac80211's geo/channel info based from eeprom - */ -int -il_init_geos(struct il_priv *il) -{ - struct il_channel_info *ch; - struct ieee80211_supported_band *sband; - struct ieee80211_channel *channels; - struct ieee80211_channel *geo_ch; - struct ieee80211_rate *rates; - int i = 0; - s8 max_tx_power = 0; - - if (il->bands[IEEE80211_BAND_2GHZ].n_bitrates || - il->bands[IEEE80211_BAND_5GHZ].n_bitrates) { - D_INFO("Geography modes already initialized.\n"); - set_bit(S_GEO_CONFIGURED, &il->status); - return 0; - } - - channels = - kzalloc(sizeof(struct ieee80211_channel) * il->channel_count, - GFP_KERNEL); - if (!channels) - return -ENOMEM; - - rates = - kzalloc((sizeof(struct ieee80211_rate) * RATE_COUNT_LEGACY), - GFP_KERNEL); - if (!rates) { - kfree(channels); - return -ENOMEM; - } - - /* 5.2GHz channels start after the 2.4GHz channels */ - sband = &il->bands[IEEE80211_BAND_5GHZ]; - sband->channels = &channels[ARRAY_SIZE(il_eeprom_band_1)]; - /* just OFDM */ - sband->bitrates = &rates[IL_FIRST_OFDM_RATE]; - sband->n_bitrates = RATE_COUNT_LEGACY - IL_FIRST_OFDM_RATE; - - if (il->cfg->sku & IL_SKU_N) - il_init_ht_hw_capab(il, &sband->ht_cap, IEEE80211_BAND_5GHZ); - - sband = &il->bands[IEEE80211_BAND_2GHZ]; - sband->channels = channels; - /* OFDM & CCK */ - sband->bitrates = rates; - sband->n_bitrates = RATE_COUNT_LEGACY; - - if (il->cfg->sku & IL_SKU_N) - il_init_ht_hw_capab(il, &sband->ht_cap, IEEE80211_BAND_2GHZ); - - il->ieee_channels = channels; - il->ieee_rates = rates; - - for (i = 0; i < il->channel_count; i++) { - ch = &il->channel_info[i]; - - if (!il_is_channel_valid(ch)) - continue; - - sband = &il->bands[ch->band]; - - geo_ch = &sband->channels[sband->n_channels++]; - - geo_ch->center_freq = - ieee80211_channel_to_frequency(ch->channel, ch->band); - geo_ch->max_power = ch->max_power_avg; - geo_ch->max_antenna_gain = 0xff; - geo_ch->hw_value = ch->channel; - - if (il_is_channel_valid(ch)) { - if (!(ch->flags & EEPROM_CHANNEL_IBSS)) - geo_ch->flags |= IEEE80211_CHAN_NO_IR; - - if (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) - geo_ch->flags |= IEEE80211_CHAN_NO_IR; - - if (ch->flags & EEPROM_CHANNEL_RADAR) - geo_ch->flags |= IEEE80211_CHAN_RADAR; - - geo_ch->flags |= ch->ht40_extension_channel; - - if (ch->max_power_avg > max_tx_power) - max_tx_power = ch->max_power_avg; - } else { - geo_ch->flags |= IEEE80211_CHAN_DISABLED; - } - - D_INFO("Channel %d Freq=%d[%sGHz] %s flag=0x%X\n", ch->channel, - geo_ch->center_freq, - il_is_channel_a_band(ch) ? "5.2" : "2.4", - geo_ch-> - flags & IEEE80211_CHAN_DISABLED ? "restricted" : "valid", - geo_ch->flags); - } - - il->tx_power_device_lmt = max_tx_power; - il->tx_power_user_lmt = max_tx_power; - il->tx_power_next = max_tx_power; - - if (il->bands[IEEE80211_BAND_5GHZ].n_channels == 0 && - (il->cfg->sku & IL_SKU_A)) { - IL_INFO("Incorrectly detected BG card as ABG. " - "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n", - il->pci_dev->device, il->pci_dev->subsystem_device); - il->cfg->sku &= ~IL_SKU_A; - } - - IL_INFO("Tunable channels: %d 802.11bg, %d 802.11a channels\n", - il->bands[IEEE80211_BAND_2GHZ].n_channels, - il->bands[IEEE80211_BAND_5GHZ].n_channels); - - set_bit(S_GEO_CONFIGURED, &il->status); - - return 0; -} -EXPORT_SYMBOL(il_init_geos); - -/* - * il_free_geos - undo allocations in il_init_geos - */ -void -il_free_geos(struct il_priv *il) -{ - kfree(il->ieee_channels); - kfree(il->ieee_rates); - clear_bit(S_GEO_CONFIGURED, &il->status); -} -EXPORT_SYMBOL(il_free_geos); - -static bool -il_is_channel_extension(struct il_priv *il, enum ieee80211_band band, - u16 channel, u8 extension_chan_offset) -{ - const struct il_channel_info *ch_info; - - ch_info = il_get_channel_info(il, band, channel); - if (!il_is_channel_valid(ch_info)) - return false; - - if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) - return !(ch_info-> - ht40_extension_channel & IEEE80211_CHAN_NO_HT40PLUS); - else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) - return !(ch_info-> - ht40_extension_channel & IEEE80211_CHAN_NO_HT40MINUS); - - return false; -} - -bool -il_is_ht40_tx_allowed(struct il_priv *il, struct ieee80211_sta_ht_cap *ht_cap) -{ - if (!il->ht.enabled || !il->ht.is_40mhz) - return false; - - /* - * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40 - * the bit will not set if it is pure 40MHz case - */ - if (ht_cap && !ht_cap->ht_supported) - return false; - -#ifdef CONFIG_IWLEGACY_DEBUGFS - if (il->disable_ht40) - return false; -#endif - - return il_is_channel_extension(il, il->band, - le16_to_cpu(il->staging.channel), - il->ht.extension_chan_offset); -} -EXPORT_SYMBOL(il_is_ht40_tx_allowed); - -static u16 -il_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val) -{ - u16 new_val; - u16 beacon_factor; - - /* - * If mac80211 hasn't given us a beacon interval, program - * the default into the device. - */ - if (!beacon_val) - return DEFAULT_BEACON_INTERVAL; - - /* - * If the beacon interval we obtained from the peer - * is too large, we'll have to wake up more often - * (and in IBSS case, we'll beacon too much) - * - * For example, if max_beacon_val is 4096, and the - * requested beacon interval is 7000, we'll have to - * use 3500 to be able to wake up on the beacons. - * - * This could badly influence beacon detection stats. - */ - - beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val; - new_val = beacon_val / beacon_factor; - - if (!new_val) - new_val = max_beacon_val; - - return new_val; -} - -int -il_send_rxon_timing(struct il_priv *il) -{ - u64 tsf; - s32 interval_tm, rem; - struct ieee80211_conf *conf = NULL; - u16 beacon_int; - struct ieee80211_vif *vif = il->vif; - - conf = &il->hw->conf; - - lockdep_assert_held(&il->mutex); - - memset(&il->timing, 0, sizeof(struct il_rxon_time_cmd)); - - il->timing.timestamp = cpu_to_le64(il->timestamp); - il->timing.listen_interval = cpu_to_le16(conf->listen_interval); - - beacon_int = vif ? vif->bss_conf.beacon_int : 0; - - /* - * TODO: For IBSS we need to get atim_win from mac80211, - * for now just always use 0 - */ - il->timing.atim_win = 0; - - beacon_int = - il_adjust_beacon_interval(beacon_int, - il->hw_params.max_beacon_itrvl * - TIME_UNIT); - il->timing.beacon_interval = cpu_to_le16(beacon_int); - - tsf = il->timestamp; /* tsf is modifed by do_div: copy it */ - interval_tm = beacon_int * TIME_UNIT; - rem = do_div(tsf, interval_tm); - il->timing.beacon_init_val = cpu_to_le32(interval_tm - rem); - - il->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ? : 1) : 1; - - D_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n", - le16_to_cpu(il->timing.beacon_interval), - le32_to_cpu(il->timing.beacon_init_val), - le16_to_cpu(il->timing.atim_win)); - - return il_send_cmd_pdu(il, C_RXON_TIMING, sizeof(il->timing), - &il->timing); -} -EXPORT_SYMBOL(il_send_rxon_timing); - -void -il_set_rxon_hwcrypto(struct il_priv *il, int hw_decrypt) -{ - struct il_rxon_cmd *rxon = &il->staging; - - if (hw_decrypt) - rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK; - else - rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK; - -} -EXPORT_SYMBOL(il_set_rxon_hwcrypto); - -/* validate RXON structure is valid */ -int -il_check_rxon_cmd(struct il_priv *il) -{ - struct il_rxon_cmd *rxon = &il->staging; - bool error = false; - - if (rxon->flags & RXON_FLG_BAND_24G_MSK) { - if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) { - IL_WARN("check 2.4G: wrong narrow\n"); - error = true; - } - if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) { - IL_WARN("check 2.4G: wrong radar\n"); - error = true; - } - } else { - if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) { - IL_WARN("check 5.2G: not short slot!\n"); - error = true; - } - if (rxon->flags & RXON_FLG_CCK_MSK) { - IL_WARN("check 5.2G: CCK!\n"); - error = true; - } - } - if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) { - IL_WARN("mac/bssid mcast!\n"); - error = true; - } - - /* make sure basic rates 6Mbps and 1Mbps are supported */ - if ((rxon->ofdm_basic_rates & RATE_6M_MASK) == 0 && - (rxon->cck_basic_rates & RATE_1M_MASK) == 0) { - IL_WARN("neither 1 nor 6 are basic\n"); - error = true; - } - - if (le16_to_cpu(rxon->assoc_id) > 2007) { - IL_WARN("aid > 2007\n"); - error = true; - } - - if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) == - (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) { - IL_WARN("CCK and short slot\n"); - error = true; - } - - if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) == - (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) { - IL_WARN("CCK and auto detect"); - error = true; - } - - if ((rxon-> - flags & (RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK)) == - RXON_FLG_TGG_PROTECT_MSK) { - IL_WARN("TGg but no auto-detect\n"); - error = true; - } - - if (error) - IL_WARN("Tuning to channel %d\n", le16_to_cpu(rxon->channel)); - - if (error) { - IL_ERR("Invalid RXON\n"); - return -EINVAL; - } - return 0; -} -EXPORT_SYMBOL(il_check_rxon_cmd); - -/** - * il_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed - * @il: staging_rxon is compared to active_rxon - * - * If the RXON structure is changing enough to require a new tune, - * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that - * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required. - */ -int -il_full_rxon_required(struct il_priv *il) -{ - const struct il_rxon_cmd *staging = &il->staging; - const struct il_rxon_cmd *active = &il->active; - -#define CHK(cond) \ - if ((cond)) { \ - D_INFO("need full RXON - " #cond "\n"); \ - return 1; \ - } - -#define CHK_NEQ(c1, c2) \ - if ((c1) != (c2)) { \ - D_INFO("need full RXON - " \ - #c1 " != " #c2 " - %d != %d\n", \ - (c1), (c2)); \ - return 1; \ - } - - /* These items are only settable from the full RXON command */ - CHK(!il_is_associated(il)); - CHK(!ether_addr_equal_64bits(staging->bssid_addr, active->bssid_addr)); - CHK(!ether_addr_equal_64bits(staging->node_addr, active->node_addr)); - CHK(!ether_addr_equal_64bits(staging->wlap_bssid_addr, - active->wlap_bssid_addr)); - CHK_NEQ(staging->dev_type, active->dev_type); - CHK_NEQ(staging->channel, active->channel); - CHK_NEQ(staging->air_propagation, active->air_propagation); - CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates, - active->ofdm_ht_single_stream_basic_rates); - CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates, - active->ofdm_ht_dual_stream_basic_rates); - CHK_NEQ(staging->assoc_id, active->assoc_id); - - /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can - * be updated with the RXON_ASSOC command -- however only some - * flag transitions are allowed using RXON_ASSOC */ - - /* Check if we are not switching bands */ - CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK, - active->flags & RXON_FLG_BAND_24G_MSK); - - /* Check if we are switching association toggle */ - CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK, - active->filter_flags & RXON_FILTER_ASSOC_MSK); - -#undef CHK -#undef CHK_NEQ - - return 0; -} -EXPORT_SYMBOL(il_full_rxon_required); - -u8 -il_get_lowest_plcp(struct il_priv *il) -{ - /* - * Assign the lowest rate -- should really get this from - * the beacon skb from mac80211. - */ - if (il->staging.flags & RXON_FLG_BAND_24G_MSK) - return RATE_1M_PLCP; - else - return RATE_6M_PLCP; -} -EXPORT_SYMBOL(il_get_lowest_plcp); - -static void -_il_set_rxon_ht(struct il_priv *il, struct il_ht_config *ht_conf) -{ - struct il_rxon_cmd *rxon = &il->staging; - - if (!il->ht.enabled) { - rxon->flags &= - ~(RXON_FLG_CHANNEL_MODE_MSK | - RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK | RXON_FLG_HT40_PROT_MSK - | RXON_FLG_HT_PROT_MSK); - return; - } - - rxon->flags |= - cpu_to_le32(il->ht.protection << RXON_FLG_HT_OPERATING_MODE_POS); - - /* Set up channel bandwidth: - * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */ - /* clear the HT channel mode before set the mode */ - rxon->flags &= - ~(RXON_FLG_CHANNEL_MODE_MSK | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); - if (il_is_ht40_tx_allowed(il, NULL)) { - /* pure ht40 */ - if (il->ht.protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) { - rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40; - /* Note: control channel is opposite of extension channel */ - switch (il->ht.extension_chan_offset) { - case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: - rxon->flags &= - ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; - break; - case IEEE80211_HT_PARAM_CHA_SEC_BELOW: - rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; - break; - } - } else { - /* Note: control channel is opposite of extension channel */ - switch (il->ht.extension_chan_offset) { - case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: - rxon->flags &= - ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); - rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; - break; - case IEEE80211_HT_PARAM_CHA_SEC_BELOW: - rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; - rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; - break; - case IEEE80211_HT_PARAM_CHA_SEC_NONE: - default: - /* channel location only valid if in Mixed mode */ - IL_ERR("invalid extension channel offset\n"); - break; - } - } - } else { - rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY; - } - - if (il->ops->set_rxon_chain) - il->ops->set_rxon_chain(il); - - D_ASSOC("rxon flags 0x%X operation mode :0x%X " - "extension channel offset 0x%x\n", le32_to_cpu(rxon->flags), - il->ht.protection, il->ht.extension_chan_offset); -} - -void -il_set_rxon_ht(struct il_priv *il, struct il_ht_config *ht_conf) -{ - _il_set_rxon_ht(il, ht_conf); -} -EXPORT_SYMBOL(il_set_rxon_ht); - -/* Return valid, unused, channel for a passive scan to reset the RF */ -u8 -il_get_single_channel_number(struct il_priv *il, enum ieee80211_band band) -{ - const struct il_channel_info *ch_info; - int i; - u8 channel = 0; - u8 min, max; - - if (band == IEEE80211_BAND_5GHZ) { - min = 14; - max = il->channel_count; - } else { - min = 0; - max = 14; - } - - for (i = min; i < max; i++) { - channel = il->channel_info[i].channel; - if (channel == le16_to_cpu(il->staging.channel)) - continue; - - ch_info = il_get_channel_info(il, band, channel); - if (il_is_channel_valid(ch_info)) - break; - } - - return channel; -} -EXPORT_SYMBOL(il_get_single_channel_number); - -/** - * il_set_rxon_channel - Set the band and channel values in staging RXON - * @ch: requested channel as a pointer to struct ieee80211_channel - - * NOTE: Does not commit to the hardware; it sets appropriate bit fields - * in the staging RXON flag structure based on the ch->band - */ -int -il_set_rxon_channel(struct il_priv *il, struct ieee80211_channel *ch) -{ - enum ieee80211_band band = ch->band; - u16 channel = ch->hw_value; - - if (le16_to_cpu(il->staging.channel) == channel && il->band == band) - return 0; - - il->staging.channel = cpu_to_le16(channel); - if (band == IEEE80211_BAND_5GHZ) - il->staging.flags &= ~RXON_FLG_BAND_24G_MSK; - else - il->staging.flags |= RXON_FLG_BAND_24G_MSK; - - il->band = band; - - D_INFO("Staging channel set to %d [%d]\n", channel, band); - - return 0; -} -EXPORT_SYMBOL(il_set_rxon_channel); - -void -il_set_flags_for_band(struct il_priv *il, enum ieee80211_band band, - struct ieee80211_vif *vif) -{ - if (band == IEEE80211_BAND_5GHZ) { - il->staging.flags &= - ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK | - RXON_FLG_CCK_MSK); - il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; - } else { - /* Copied from il_post_associate() */ - if (vif && vif->bss_conf.use_short_slot) - il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; - else - il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; - - il->staging.flags |= RXON_FLG_BAND_24G_MSK; - il->staging.flags |= RXON_FLG_AUTO_DETECT_MSK; - il->staging.flags &= ~RXON_FLG_CCK_MSK; - } -} -EXPORT_SYMBOL(il_set_flags_for_band); - -/* - * initialize rxon structure with default values from eeprom - */ -void -il_connection_init_rx_config(struct il_priv *il) -{ - const struct il_channel_info *ch_info; - - memset(&il->staging, 0, sizeof(il->staging)); - - switch (il->iw_mode) { - case NL80211_IFTYPE_UNSPECIFIED: - il->staging.dev_type = RXON_DEV_TYPE_ESS; - break; - case NL80211_IFTYPE_STATION: - il->staging.dev_type = RXON_DEV_TYPE_ESS; - il->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK; - break; - case NL80211_IFTYPE_ADHOC: - il->staging.dev_type = RXON_DEV_TYPE_IBSS; - il->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK; - il->staging.filter_flags = - RXON_FILTER_BCON_AWARE_MSK | RXON_FILTER_ACCEPT_GRP_MSK; - break; - default: - IL_ERR("Unsupported interface type %d\n", il->vif->type); - return; - } - -#if 0 - /* TODO: Figure out when short_preamble would be set and cache from - * that */ - if (!hw_to_local(il->hw)->short_preamble) - il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; - else - il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; -#endif - - ch_info = - il_get_channel_info(il, il->band, le16_to_cpu(il->active.channel)); - - if (!ch_info) - ch_info = &il->channel_info[0]; - - il->staging.channel = cpu_to_le16(ch_info->channel); - il->band = ch_info->band; - - il_set_flags_for_band(il, il->band, il->vif); - - il->staging.ofdm_basic_rates = - (IL_OFDM_RATES_MASK >> IL_FIRST_OFDM_RATE) & 0xFF; - il->staging.cck_basic_rates = - (IL_CCK_RATES_MASK >> IL_FIRST_CCK_RATE) & 0xF; - - /* clear both MIX and PURE40 mode flag */ - il->staging.flags &= - ~(RXON_FLG_CHANNEL_MODE_MIXED | RXON_FLG_CHANNEL_MODE_PURE_40); - if (il->vif) - memcpy(il->staging.node_addr, il->vif->addr, ETH_ALEN); - - il->staging.ofdm_ht_single_stream_basic_rates = 0xff; - il->staging.ofdm_ht_dual_stream_basic_rates = 0xff; -} -EXPORT_SYMBOL(il_connection_init_rx_config); - -void -il_set_rate(struct il_priv *il) -{ - const struct ieee80211_supported_band *hw = NULL; - struct ieee80211_rate *rate; - int i; - - hw = il_get_hw_mode(il, il->band); - if (!hw) { - IL_ERR("Failed to set rate: unable to get hw mode\n"); - return; - } - - il->active_rate = 0; - - for (i = 0; i < hw->n_bitrates; i++) { - rate = &(hw->bitrates[i]); - if (rate->hw_value < RATE_COUNT_LEGACY) - il->active_rate |= (1 << rate->hw_value); - } - - D_RATE("Set active_rate = %0x\n", il->active_rate); - - il->staging.cck_basic_rates = - (IL_CCK_BASIC_RATES_MASK >> IL_FIRST_CCK_RATE) & 0xF; - - il->staging.ofdm_basic_rates = - (IL_OFDM_BASIC_RATES_MASK >> IL_FIRST_OFDM_RATE) & 0xFF; -} -EXPORT_SYMBOL(il_set_rate); - -void -il_chswitch_done(struct il_priv *il, bool is_success) -{ - if (test_bit(S_EXIT_PENDING, &il->status)) - return; - - if (test_and_clear_bit(S_CHANNEL_SWITCH_PENDING, &il->status)) - ieee80211_chswitch_done(il->vif, is_success); -} -EXPORT_SYMBOL(il_chswitch_done); - -void -il_hdl_csa(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - struct il_csa_notification *csa = &(pkt->u.csa_notif); - struct il_rxon_cmd *rxon = (void *)&il->active; - - if (!test_bit(S_CHANNEL_SWITCH_PENDING, &il->status)) - return; - - if (!le32_to_cpu(csa->status) && csa->channel == il->switch_channel) { - rxon->channel = csa->channel; - il->staging.channel = csa->channel; - D_11H("CSA notif: channel %d\n", le16_to_cpu(csa->channel)); - il_chswitch_done(il, true); - } else { - IL_ERR("CSA notif (fail) : channel %d\n", - le16_to_cpu(csa->channel)); - il_chswitch_done(il, false); - } -} -EXPORT_SYMBOL(il_hdl_csa); - -#ifdef CONFIG_IWLEGACY_DEBUG -void -il_print_rx_config_cmd(struct il_priv *il) -{ - struct il_rxon_cmd *rxon = &il->staging; - - D_RADIO("RX CONFIG:\n"); - il_print_hex_dump(il, IL_DL_RADIO, (u8 *) rxon, sizeof(*rxon)); - D_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel)); - D_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags)); - D_RADIO("u32 filter_flags: 0x%08x\n", le32_to_cpu(rxon->filter_flags)); - D_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type); - D_RADIO("u8 ofdm_basic_rates: 0x%02x\n", rxon->ofdm_basic_rates); - D_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates); - D_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr); - D_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr); - D_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id)); -} -EXPORT_SYMBOL(il_print_rx_config_cmd); -#endif -/** - * il_irq_handle_error - called for HW or SW error interrupt from card - */ -void -il_irq_handle_error(struct il_priv *il) -{ - /* Set the FW error flag -- cleared on il_down */ - set_bit(S_FW_ERROR, &il->status); - - /* Cancel currently queued command. */ - clear_bit(S_HCMD_ACTIVE, &il->status); - - IL_ERR("Loaded firmware version: %s\n", il->hw->wiphy->fw_version); - - il->ops->dump_nic_error_log(il); - if (il->ops->dump_fh) - il->ops->dump_fh(il, NULL, false); -#ifdef CONFIG_IWLEGACY_DEBUG - if (il_get_debug_level(il) & IL_DL_FW_ERRORS) - il_print_rx_config_cmd(il); -#endif - - wake_up(&il->wait_command_queue); - - /* Keep the restart process from trying to send host - * commands by clearing the INIT status bit */ - clear_bit(S_READY, &il->status); - - if (!test_bit(S_EXIT_PENDING, &il->status)) { - IL_DBG(IL_DL_FW_ERRORS, - "Restarting adapter due to uCode error.\n"); - - if (il->cfg->mod_params->restart_fw) - queue_work(il->workqueue, &il->restart); - } -} -EXPORT_SYMBOL(il_irq_handle_error); - -static int -_il_apm_stop_master(struct il_priv *il) -{ - int ret = 0; - - /* stop device's busmaster DMA activity */ - _il_set_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); - - ret = - _il_poll_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED, - CSR_RESET_REG_FLAG_MASTER_DISABLED, 100); - if (ret < 0) - IL_WARN("Master Disable Timed Out, 100 usec\n"); - - D_INFO("stop master\n"); - - return ret; -} - -void -_il_apm_stop(struct il_priv *il) -{ - lockdep_assert_held(&il->reg_lock); - - D_INFO("Stop card, put in low power state\n"); - - /* Stop device's DMA activity */ - _il_apm_stop_master(il); - - /* Reset the entire device */ - _il_set_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); - - udelay(10); - - /* - * Clear "initialization complete" bit to move adapter from - * D0A* (powered-up Active) --> D0U* (Uninitialized) state. - */ - _il_clear_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); -} -EXPORT_SYMBOL(_il_apm_stop); - -void -il_apm_stop(struct il_priv *il) -{ - unsigned long flags; - - spin_lock_irqsave(&il->reg_lock, flags); - _il_apm_stop(il); - spin_unlock_irqrestore(&il->reg_lock, flags); -} -EXPORT_SYMBOL(il_apm_stop); - -/* - * Start up NIC's basic functionality after it has been reset - * (e.g. after platform boot, or shutdown via il_apm_stop()) - * NOTE: This does not load uCode nor start the embedded processor - */ -int -il_apm_init(struct il_priv *il) -{ - int ret = 0; - u16 lctl; - - D_INFO("Init card's basic functions\n"); - - /* - * Use "set_bit" below rather than "write", to preserve any hardware - * bits already set by default after reset. - */ - - /* Disable L0S exit timer (platform NMI Work/Around) */ - il_set_bit(il, CSR_GIO_CHICKEN_BITS, - CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER); - - /* - * Disable L0s without affecting L1; - * don't wait for ICH L0s (ICH bug W/A) - */ - il_set_bit(il, CSR_GIO_CHICKEN_BITS, - CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX); - - /* Set FH wait threshold to maximum (HW error during stress W/A) */ - il_set_bit(il, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL); - - /* - * Enable HAP INTA (interrupt from management bus) to - * wake device's PCI Express link L1a -> L0s - * NOTE: This is no-op for 3945 (non-existent bit) - */ - il_set_bit(il, CSR_HW_IF_CONFIG_REG, - CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A); - - /* - * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition. - * Check if BIOS (or OS) enabled L1-ASPM on this device. - * If so (likely), disable L0S, so device moves directly L0->L1; - * costs negligible amount of power savings. - * If not (unlikely), enable L0S, so there is at least some - * power savings, even without L1. - */ - if (il->cfg->set_l0s) { - pcie_capability_read_word(il->pci_dev, PCI_EXP_LNKCTL, &lctl); - if (lctl & PCI_EXP_LNKCTL_ASPM_L1) { - /* L1-ASPM enabled; disable(!) L0S */ - il_set_bit(il, CSR_GIO_REG, - CSR_GIO_REG_VAL_L0S_ENABLED); - D_POWER("L1 Enabled; Disabling L0S\n"); - } else { - /* L1-ASPM disabled; enable(!) L0S */ - il_clear_bit(il, CSR_GIO_REG, - CSR_GIO_REG_VAL_L0S_ENABLED); - D_POWER("L1 Disabled; Enabling L0S\n"); - } - } - - /* Configure analog phase-lock-loop before activating to D0A */ - if (il->cfg->pll_cfg_val) - il_set_bit(il, CSR_ANA_PLL_CFG, - il->cfg->pll_cfg_val); - - /* - * Set "initialization complete" bit to move adapter from - * D0U* --> D0A* (powered-up active) state. - */ - il_set_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); - - /* - * Wait for clock stabilization; once stabilized, access to - * device-internal resources is supported, e.g. il_wr_prph() - * and accesses to uCode SRAM. - */ - ret = - _il_poll_bit(il, CSR_GP_CNTRL, - CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, - CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); - if (ret < 0) { - D_INFO("Failed to init the card\n"); - goto out; - } - - /* - * Enable DMA and BSM (if used) clocks, wait for them to stabilize. - * BSM (Boostrap State Machine) is only in 3945 and 4965. - * - * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits - * do not disable clocks. This preserves any hardware bits already - * set by default in "CLK_CTRL_REG" after reset. - */ - if (il->cfg->use_bsm) - il_wr_prph(il, APMG_CLK_EN_REG, - APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT); - else - il_wr_prph(il, APMG_CLK_EN_REG, APMG_CLK_VAL_DMA_CLK_RQT); - udelay(20); - - /* Disable L1-Active */ - il_set_bits_prph(il, APMG_PCIDEV_STT_REG, - APMG_PCIDEV_STT_VAL_L1_ACT_DIS); - -out: - return ret; -} -EXPORT_SYMBOL(il_apm_init); - -int -il_set_tx_power(struct il_priv *il, s8 tx_power, bool force) -{ - int ret; - s8 prev_tx_power; - bool defer; - - lockdep_assert_held(&il->mutex); - - if (il->tx_power_user_lmt == tx_power && !force) - return 0; - - if (!il->ops->send_tx_power) - return -EOPNOTSUPP; - - /* 0 dBm mean 1 milliwatt */ - if (tx_power < 0) { - IL_WARN("Requested user TXPOWER %d below 1 mW.\n", tx_power); - return -EINVAL; - } - - if (tx_power > il->tx_power_device_lmt) { - IL_WARN("Requested user TXPOWER %d above upper limit %d.\n", - tx_power, il->tx_power_device_lmt); - return -EINVAL; - } - - if (!il_is_ready_rf(il)) - return -EIO; - - /* scan complete and commit_rxon use tx_power_next value, - * it always need to be updated for newest request */ - il->tx_power_next = tx_power; - - /* do not set tx power when scanning or channel changing */ - defer = test_bit(S_SCANNING, &il->status) || - memcmp(&il->active, &il->staging, sizeof(il->staging)); - if (defer && !force) { - D_INFO("Deferring tx power set\n"); - return 0; - } - - prev_tx_power = il->tx_power_user_lmt; - il->tx_power_user_lmt = tx_power; - - ret = il->ops->send_tx_power(il); - - /* if fail to set tx_power, restore the orig. tx power */ - if (ret) { - il->tx_power_user_lmt = prev_tx_power; - il->tx_power_next = prev_tx_power; - } - return ret; -} -EXPORT_SYMBOL(il_set_tx_power); - -void -il_send_bt_config(struct il_priv *il) -{ - struct il_bt_cmd bt_cmd = { - .lead_time = BT_LEAD_TIME_DEF, - .max_kill = BT_MAX_KILL_DEF, - .kill_ack_mask = 0, - .kill_cts_mask = 0, - }; - - if (!bt_coex_active) - bt_cmd.flags = BT_COEX_DISABLE; - else - bt_cmd.flags = BT_COEX_ENABLE; - - D_INFO("BT coex %s\n", - (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active"); - - if (il_send_cmd_pdu(il, C_BT_CONFIG, sizeof(struct il_bt_cmd), &bt_cmd)) - IL_ERR("failed to send BT Coex Config\n"); -} -EXPORT_SYMBOL(il_send_bt_config); - -int -il_send_stats_request(struct il_priv *il, u8 flags, bool clear) -{ - struct il_stats_cmd stats_cmd = { - .configuration_flags = clear ? IL_STATS_CONF_CLEAR_STATS : 0, - }; - - if (flags & CMD_ASYNC) - return il_send_cmd_pdu_async(il, C_STATS, sizeof(struct il_stats_cmd), - &stats_cmd, NULL); - else - return il_send_cmd_pdu(il, C_STATS, sizeof(struct il_stats_cmd), - &stats_cmd); -} -EXPORT_SYMBOL(il_send_stats_request); - -void -il_hdl_pm_sleep(struct il_priv *il, struct il_rx_buf *rxb) -{ -#ifdef CONFIG_IWLEGACY_DEBUG - struct il_rx_pkt *pkt = rxb_addr(rxb); - struct il_sleep_notification *sleep = &(pkt->u.sleep_notif); - D_RX("sleep mode: %d, src: %d\n", - sleep->pm_sleep_mode, sleep->pm_wakeup_src); -#endif -} -EXPORT_SYMBOL(il_hdl_pm_sleep); - -void -il_hdl_pm_debug_stats(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - u32 len = le32_to_cpu(pkt->len_n_flags) & IL_RX_FRAME_SIZE_MSK; - D_RADIO("Dumping %d bytes of unhandled notification for %s:\n", len, - il_get_cmd_string(pkt->hdr.cmd)); - il_print_hex_dump(il, IL_DL_RADIO, pkt->u.raw, len); -} -EXPORT_SYMBOL(il_hdl_pm_debug_stats); - -void -il_hdl_error(struct il_priv *il, struct il_rx_buf *rxb) -{ - struct il_rx_pkt *pkt = rxb_addr(rxb); - - IL_ERR("Error Reply type 0x%08X cmd %s (0x%02X) " - "seq 0x%04X ser 0x%08X\n", - le32_to_cpu(pkt->u.err_resp.error_type), - il_get_cmd_string(pkt->u.err_resp.cmd_id), - pkt->u.err_resp.cmd_id, - le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num), - le32_to_cpu(pkt->u.err_resp.error_info)); -} -EXPORT_SYMBOL(il_hdl_error); - -void -il_clear_isr_stats(struct il_priv *il) -{ - memset(&il->isr_stats, 0, sizeof(il->isr_stats)); -} - -int -il_mac_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue, - const struct ieee80211_tx_queue_params *params) -{ - struct il_priv *il = hw->priv; - unsigned long flags; - int q; - - D_MAC80211("enter\n"); - - if (!il_is_ready_rf(il)) { - D_MAC80211("leave - RF not ready\n"); - return -EIO; - } - - if (queue >= AC_NUM) { - D_MAC80211("leave - queue >= AC_NUM %d\n", queue); - return 0; - } - - q = AC_NUM - 1 - queue; - - spin_lock_irqsave(&il->lock, flags); - - il->qos_data.def_qos_parm.ac[q].cw_min = - cpu_to_le16(params->cw_min); - il->qos_data.def_qos_parm.ac[q].cw_max = - cpu_to_le16(params->cw_max); - il->qos_data.def_qos_parm.ac[q].aifsn = params->aifs; - il->qos_data.def_qos_parm.ac[q].edca_txop = - cpu_to_le16((params->txop * 32)); - - il->qos_data.def_qos_parm.ac[q].reserved1 = 0; - - spin_unlock_irqrestore(&il->lock, flags); - - D_MAC80211("leave\n"); - return 0; -} -EXPORT_SYMBOL(il_mac_conf_tx); - -int -il_mac_tx_last_beacon(struct ieee80211_hw *hw) -{ - struct il_priv *il = hw->priv; - int ret; - - D_MAC80211("enter\n"); - - ret = (il->ibss_manager == IL_IBSS_MANAGER); - - D_MAC80211("leave ret %d\n", ret); - return ret; -} -EXPORT_SYMBOL_GPL(il_mac_tx_last_beacon); - -static int -il_set_mode(struct il_priv *il) -{ - il_connection_init_rx_config(il); - - if (il->ops->set_rxon_chain) - il->ops->set_rxon_chain(il); - - return il_commit_rxon(il); -} - -int -il_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) -{ - struct il_priv *il = hw->priv; - int err; - bool reset; - - mutex_lock(&il->mutex); - D_MAC80211("enter: type %d, addr %pM\n", vif->type, vif->addr); - - if (!il_is_ready_rf(il)) { - IL_WARN("Try to add interface when device not ready\n"); - err = -EINVAL; - goto out; - } - - /* - * We do not support multiple virtual interfaces, but on hardware reset - * we have to add the same interface again. - */ - reset = (il->vif == vif); - if (il->vif && !reset) { - err = -EOPNOTSUPP; - goto out; - } - - il->vif = vif; - il->iw_mode = vif->type; - - err = il_set_mode(il); - if (err) { - IL_WARN("Fail to set mode %d\n", vif->type); - if (!reset) { - il->vif = NULL; - il->iw_mode = NL80211_IFTYPE_STATION; - } - } - -out: - D_MAC80211("leave err %d\n", err); - mutex_unlock(&il->mutex); - - return err; -} -EXPORT_SYMBOL(il_mac_add_interface); - -static void -il_teardown_interface(struct il_priv *il, struct ieee80211_vif *vif) -{ - lockdep_assert_held(&il->mutex); - - if (il->scan_vif == vif) { - il_scan_cancel_timeout(il, 200); - il_force_scan_end(il); - } - - il_set_mode(il); -} - -void -il_mac_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) -{ - struct il_priv *il = hw->priv; - - mutex_lock(&il->mutex); - D_MAC80211("enter: type %d, addr %pM\n", vif->type, vif->addr); - - WARN_ON(il->vif != vif); - il->vif = NULL; - il->iw_mode = NL80211_IFTYPE_UNSPECIFIED; - il_teardown_interface(il, vif); - eth_zero_addr(il->bssid); - - D_MAC80211("leave\n"); - mutex_unlock(&il->mutex); -} -EXPORT_SYMBOL(il_mac_remove_interface); - -int -il_alloc_txq_mem(struct il_priv *il) -{ - if (!il->txq) - il->txq = - kzalloc(sizeof(struct il_tx_queue) * - il->cfg->num_of_queues, GFP_KERNEL); - if (!il->txq) { - IL_ERR("Not enough memory for txq\n"); - return -ENOMEM; - } - return 0; -} -EXPORT_SYMBOL(il_alloc_txq_mem); - -void -il_free_txq_mem(struct il_priv *il) -{ - kfree(il->txq); - il->txq = NULL; -} -EXPORT_SYMBOL(il_free_txq_mem); - -int -il_force_reset(struct il_priv *il, bool external) -{ - struct il_force_reset *force_reset; - - if (test_bit(S_EXIT_PENDING, &il->status)) - return -EINVAL; - - force_reset = &il->force_reset; - force_reset->reset_request_count++; - if (!external) { - if (force_reset->last_force_reset_jiffies && - time_after(force_reset->last_force_reset_jiffies + - force_reset->reset_duration, jiffies)) { - D_INFO("force reset rejected\n"); - force_reset->reset_reject_count++; - return -EAGAIN; - } - } - force_reset->reset_success_count++; - force_reset->last_force_reset_jiffies = jiffies; - - /* - * if the request is from external(ex: debugfs), - * then always perform the request in regardless the module - * parameter setting - * if the request is from internal (uCode error or driver - * detect failure), then fw_restart module parameter - * need to be check before performing firmware reload - */ - - if (!external && !il->cfg->mod_params->restart_fw) { - D_INFO("Cancel firmware reload based on " - "module parameter setting\n"); - return 0; - } - - IL_ERR("On demand firmware reload\n"); - - /* Set the FW error flag -- cleared on il_down */ - set_bit(S_FW_ERROR, &il->status); - wake_up(&il->wait_command_queue); - /* - * Keep the restart process from trying to send host - * commands by clearing the INIT status bit - */ - clear_bit(S_READY, &il->status); - queue_work(il->workqueue, &il->restart); - - return 0; -} -EXPORT_SYMBOL(il_force_reset); - -int -il_mac_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - enum nl80211_iftype newtype, bool newp2p) -{ - struct il_priv *il = hw->priv; - int err; - - mutex_lock(&il->mutex); - D_MAC80211("enter: type %d, addr %pM newtype %d newp2p %d\n", - vif->type, vif->addr, newtype, newp2p); - - if (newp2p) { - err = -EOPNOTSUPP; - goto out; - } - - if (!il->vif || !il_is_ready_rf(il)) { - /* - * Huh? But wait ... this can maybe happen when - * we're in the middle of a firmware restart! - */ - err = -EBUSY; - goto out; - } - - /* success */ - vif->type = newtype; - vif->p2p = false; - il->iw_mode = newtype; - il_teardown_interface(il, vif); - err = 0; - -out: - D_MAC80211("leave err %d\n", err); - mutex_unlock(&il->mutex); - - return err; -} -EXPORT_SYMBOL(il_mac_change_interface); - -void il_mac_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - u32 queues, bool drop) -{ - struct il_priv *il = hw->priv; - unsigned long timeout = jiffies + msecs_to_jiffies(500); - int i; - - mutex_lock(&il->mutex); - D_MAC80211("enter\n"); - - if (il->txq == NULL) - goto out; - - for (i = 0; i < il->hw_params.max_txq_num; i++) { - struct il_queue *q; - - if (i == il->cmd_queue) - continue; - - q = &il->txq[i].q; - if (q->read_ptr == q->write_ptr) - continue; - - if (time_after(jiffies, timeout)) { - IL_ERR("Failed to flush queue %d\n", q->id); - break; - } - - msleep(20); - } -out: - D_MAC80211("leave\n"); - mutex_unlock(&il->mutex); -} -EXPORT_SYMBOL(il_mac_flush); - -/* - * On every watchdog tick we check (latest) time stamp. If it does not - * change during timeout period and queue is not empty we reset firmware. - */ -static int -il_check_stuck_queue(struct il_priv *il, int cnt) -{ - struct il_tx_queue *txq = &il->txq[cnt]; - struct il_queue *q = &txq->q; - unsigned long timeout; - unsigned long now = jiffies; - int ret; - - if (q->read_ptr == q->write_ptr) { - txq->time_stamp = now; - return 0; - } - - timeout = - txq->time_stamp + - msecs_to_jiffies(il->cfg->wd_timeout); - - if (time_after(now, timeout)) { - IL_ERR("Queue %d stuck for %u ms.\n", q->id, - jiffies_to_msecs(now - txq->time_stamp)); - ret = il_force_reset(il, false); - return (ret == -EAGAIN) ? 0 : 1; - } - - return 0; -} - -/* - * Making watchdog tick be a quarter of timeout assure we will - * discover the queue hung between timeout and 1.25*timeout - */ -#define IL_WD_TICK(timeout) ((timeout) / 4) - -/* - * Watchdog timer callback, we check each tx queue for stuck, if if hung - * we reset the firmware. If everything is fine just rearm the timer. - */ -void -il_bg_watchdog(unsigned long data) -{ - struct il_priv *il = (struct il_priv *)data; - int cnt; - unsigned long timeout; - - if (test_bit(S_EXIT_PENDING, &il->status)) - return; - - timeout = il->cfg->wd_timeout; - if (timeout == 0) - return; - - /* monitor and check for stuck cmd queue */ - if (il_check_stuck_queue(il, il->cmd_queue)) - return; - - /* monitor and check for other stuck queues */ - for (cnt = 0; cnt < il->hw_params.max_txq_num; cnt++) { - /* skip as we already checked the command queue */ - if (cnt == il->cmd_queue) - continue; - if (il_check_stuck_queue(il, cnt)) - return; - } - - mod_timer(&il->watchdog, - jiffies + msecs_to_jiffies(IL_WD_TICK(timeout))); -} -EXPORT_SYMBOL(il_bg_watchdog); - -void -il_setup_watchdog(struct il_priv *il) -{ - unsigned int timeout = il->cfg->wd_timeout; - - if (timeout) - mod_timer(&il->watchdog, - jiffies + msecs_to_jiffies(IL_WD_TICK(timeout))); - else - del_timer(&il->watchdog); -} -EXPORT_SYMBOL(il_setup_watchdog); - -/* - * extended beacon time format - * time in usec will be changed into a 32-bit value in extended:internal format - * the extended part is the beacon counts - * the internal part is the time in usec within one beacon interval - */ -u32 -il_usecs_to_beacons(struct il_priv *il, u32 usec, u32 beacon_interval) -{ - u32 quot; - u32 rem; - u32 interval = beacon_interval * TIME_UNIT; - - if (!interval || !usec) - return 0; - - quot = - (usec / - interval) & (il_beacon_time_mask_high(il, - il->hw_params. - beacon_time_tsf_bits) >> il-> - hw_params.beacon_time_tsf_bits); - rem = - (usec % interval) & il_beacon_time_mask_low(il, - il->hw_params. - beacon_time_tsf_bits); - - return (quot << il->hw_params.beacon_time_tsf_bits) + rem; -} -EXPORT_SYMBOL(il_usecs_to_beacons); - -/* base is usually what we get from ucode with each received frame, - * the same as HW timer counter counting down - */ -__le32 -il_add_beacon_time(struct il_priv *il, u32 base, u32 addon, - u32 beacon_interval) -{ - u32 base_low = base & il_beacon_time_mask_low(il, - il->hw_params. - beacon_time_tsf_bits); - u32 addon_low = addon & il_beacon_time_mask_low(il, - il->hw_params. - beacon_time_tsf_bits); - u32 interval = beacon_interval * TIME_UNIT; - u32 res = (base & il_beacon_time_mask_high(il, - il->hw_params. - beacon_time_tsf_bits)) + - (addon & il_beacon_time_mask_high(il, - il->hw_params. - beacon_time_tsf_bits)); - - if (base_low > addon_low) - res += base_low - addon_low; - else if (base_low < addon_low) { - res += interval + base_low - addon_low; - res += (1 << il->hw_params.beacon_time_tsf_bits); - } else - res += (1 << il->hw_params.beacon_time_tsf_bits); - - return cpu_to_le32(res); -} -EXPORT_SYMBOL(il_add_beacon_time); - -#ifdef CONFIG_PM_SLEEP - -static int -il_pci_suspend(struct device *device) -{ - struct pci_dev *pdev = to_pci_dev(device); - struct il_priv *il = pci_get_drvdata(pdev); - - /* - * This function is called when system goes into suspend state - * mac80211 will call il_mac_stop() from the mac80211 suspend function - * first but since il_mac_stop() has no knowledge of who the caller is, - * it will not call apm_ops.stop() to stop the DMA operation. - * Calling apm_ops.stop here to make sure we stop the DMA. - */ - il_apm_stop(il); - - return 0; -} - -static int -il_pci_resume(struct device *device) -{ - struct pci_dev *pdev = to_pci_dev(device); - struct il_priv *il = pci_get_drvdata(pdev); - bool hw_rfkill = false; - - /* - * We disable the RETRY_TIMEOUT register (0x41) to keep - * PCI Tx retries from interfering with C3 CPU state. - */ - pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); - - il_enable_interrupts(il); - - if (!(_il_rd(il, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)) - hw_rfkill = true; - - if (hw_rfkill) - set_bit(S_RFKILL, &il->status); - else - clear_bit(S_RFKILL, &il->status); - - wiphy_rfkill_set_hw_state(il->hw->wiphy, hw_rfkill); - - return 0; -} - -SIMPLE_DEV_PM_OPS(il_pm_ops, il_pci_suspend, il_pci_resume); -EXPORT_SYMBOL(il_pm_ops); - -#endif /* CONFIG_PM_SLEEP */ - -static void -il_update_qos(struct il_priv *il) -{ - if (test_bit(S_EXIT_PENDING, &il->status)) - return; - - il->qos_data.def_qos_parm.qos_flags = 0; - - if (il->qos_data.qos_active) - il->qos_data.def_qos_parm.qos_flags |= - QOS_PARAM_FLG_UPDATE_EDCA_MSK; - - if (il->ht.enabled) - il->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK; - - D_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n", - il->qos_data.qos_active, il->qos_data.def_qos_parm.qos_flags); - - il_send_cmd_pdu_async(il, C_QOS_PARAM, sizeof(struct il_qosparam_cmd), - &il->qos_data.def_qos_parm, NULL); -} - -/** - * il_mac_config - mac80211 config callback - */ -int -il_mac_config(struct ieee80211_hw *hw, u32 changed) -{ - struct il_priv *il = hw->priv; - const struct il_channel_info *ch_info; - struct ieee80211_conf *conf = &hw->conf; - struct ieee80211_channel *channel = conf->chandef.chan; - struct il_ht_config *ht_conf = &il->current_ht_config; - unsigned long flags = 0; - int ret = 0; - u16 ch; - int scan_active = 0; - bool ht_changed = false; - - mutex_lock(&il->mutex); - D_MAC80211("enter: channel %d changed 0x%X\n", channel->hw_value, - changed); - - if (unlikely(test_bit(S_SCANNING, &il->status))) { - scan_active = 1; - D_MAC80211("scan active\n"); - } - - if (changed & - (IEEE80211_CONF_CHANGE_SMPS | IEEE80211_CONF_CHANGE_CHANNEL)) { - /* mac80211 uses static for non-HT which is what we want */ - il->current_ht_config.smps = conf->smps_mode; - - /* - * Recalculate chain counts. - * - * If monitor mode is enabled then mac80211 will - * set up the SM PS mode to OFF if an HT channel is - * configured. - */ - if (il->ops->set_rxon_chain) - il->ops->set_rxon_chain(il); - } - - /* during scanning mac80211 will delay channel setting until - * scan finish with changed = 0 - */ - if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) { - - if (scan_active) - goto set_ch_out; - - ch = channel->hw_value; - ch_info = il_get_channel_info(il, channel->band, ch); - if (!il_is_channel_valid(ch_info)) { - D_MAC80211("leave - invalid channel\n"); - ret = -EINVAL; - goto set_ch_out; - } - - if (il->iw_mode == NL80211_IFTYPE_ADHOC && - !il_is_channel_ibss(ch_info)) { - D_MAC80211("leave - not IBSS channel\n"); - ret = -EINVAL; - goto set_ch_out; - } - - spin_lock_irqsave(&il->lock, flags); - - /* Configure HT40 channels */ - if (il->ht.enabled != conf_is_ht(conf)) { - il->ht.enabled = conf_is_ht(conf); - ht_changed = true; - } - if (il->ht.enabled) { - if (conf_is_ht40_minus(conf)) { - il->ht.extension_chan_offset = - IEEE80211_HT_PARAM_CHA_SEC_BELOW; - il->ht.is_40mhz = true; - } else if (conf_is_ht40_plus(conf)) { - il->ht.extension_chan_offset = - IEEE80211_HT_PARAM_CHA_SEC_ABOVE; - il->ht.is_40mhz = true; - } else { - il->ht.extension_chan_offset = - IEEE80211_HT_PARAM_CHA_SEC_NONE; - il->ht.is_40mhz = false; - } - } else - il->ht.is_40mhz = false; - - /* - * Default to no protection. Protection mode will - * later be set from BSS config in il_ht_conf - */ - il->ht.protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE; - - /* if we are switching from ht to 2.4 clear flags - * from any ht related info since 2.4 does not - * support ht */ - if ((le16_to_cpu(il->staging.channel) != ch)) - il->staging.flags = 0; - - il_set_rxon_channel(il, channel); - il_set_rxon_ht(il, ht_conf); - - il_set_flags_for_band(il, channel->band, il->vif); - - spin_unlock_irqrestore(&il->lock, flags); - - if (il->ops->update_bcast_stations) - ret = il->ops->update_bcast_stations(il); - -set_ch_out: - /* The list of supported rates and rate mask can be different - * for each band; since the band may have changed, reset - * the rate mask to what mac80211 lists */ - il_set_rate(il); - } - - if (changed & (IEEE80211_CONF_CHANGE_PS | IEEE80211_CONF_CHANGE_IDLE)) { - il->power_data.ps_disabled = !(conf->flags & IEEE80211_CONF_PS); - ret = il_power_update_mode(il, false); - if (ret) - D_MAC80211("Error setting sleep level\n"); - } - - if (changed & IEEE80211_CONF_CHANGE_POWER) { - D_MAC80211("TX Power old=%d new=%d\n", il->tx_power_user_lmt, - conf->power_level); - - il_set_tx_power(il, conf->power_level, false); - } - - if (!il_is_ready(il)) { - D_MAC80211("leave - not ready\n"); - goto out; - } - - if (scan_active) - goto out; - - if (memcmp(&il->active, &il->staging, sizeof(il->staging))) - il_commit_rxon(il); - else - D_INFO("Not re-sending same RXON configuration.\n"); - if (ht_changed) - il_update_qos(il); - -out: - D_MAC80211("leave ret %d\n", ret); - mutex_unlock(&il->mutex); - - return ret; -} -EXPORT_SYMBOL(il_mac_config); - -void -il_mac_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) -{ - struct il_priv *il = hw->priv; - unsigned long flags; - - mutex_lock(&il->mutex); - D_MAC80211("enter: type %d, addr %pM\n", vif->type, vif->addr); - - spin_lock_irqsave(&il->lock, flags); - - memset(&il->current_ht_config, 0, sizeof(struct il_ht_config)); - - /* new association get rid of ibss beacon skb */ - if (il->beacon_skb) - dev_kfree_skb(il->beacon_skb); - il->beacon_skb = NULL; - il->timestamp = 0; - - spin_unlock_irqrestore(&il->lock, flags); - - il_scan_cancel_timeout(il, 100); - if (!il_is_ready_rf(il)) { - D_MAC80211("leave - not ready\n"); - mutex_unlock(&il->mutex); - return; - } - - /* we are restarting association process */ - il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; - il_commit_rxon(il); - - il_set_rate(il); - - D_MAC80211("leave\n"); - mutex_unlock(&il->mutex); -} -EXPORT_SYMBOL(il_mac_reset_tsf); - -static void -il_ht_conf(struct il_priv *il, struct ieee80211_vif *vif) -{ - struct il_ht_config *ht_conf = &il->current_ht_config; - struct ieee80211_sta *sta; - struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; - - D_ASSOC("enter:\n"); - - if (!il->ht.enabled) - return; - - il->ht.protection = - bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION; - il->ht.non_gf_sta_present = - !!(bss_conf-> - ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); - - ht_conf->single_chain_sufficient = false; - - switch (vif->type) { - case NL80211_IFTYPE_STATION: - rcu_read_lock(); - sta = ieee80211_find_sta(vif, bss_conf->bssid); - if (sta) { - struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; - int maxstreams; - - maxstreams = - (ht_cap->mcs. - tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) - >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; - maxstreams += 1; - - if (ht_cap->mcs.rx_mask[1] == 0 && - ht_cap->mcs.rx_mask[2] == 0) - ht_conf->single_chain_sufficient = true; - if (maxstreams <= 1) - ht_conf->single_chain_sufficient = true; - } else { - /* - * If at all, this can only happen through a race - * when the AP disconnects us while we're still - * setting up the connection, in that case mac80211 - * will soon tell us about that. - */ - ht_conf->single_chain_sufficient = true; - } - rcu_read_unlock(); - break; - case NL80211_IFTYPE_ADHOC: - ht_conf->single_chain_sufficient = true; - break; - default: - break; - } - - D_ASSOC("leave\n"); -} - -static inline void -il_set_no_assoc(struct il_priv *il, struct ieee80211_vif *vif) -{ - /* - * inform the ucode that there is no longer an - * association and that no more packets should be - * sent - */ - il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; - il->staging.assoc_id = 0; - il_commit_rxon(il); -} - -static void -il_beacon_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif) -{ - struct il_priv *il = hw->priv; - unsigned long flags; - __le64 timestamp; - struct sk_buff *skb = ieee80211_beacon_get(hw, vif); - - if (!skb) - return; - - D_MAC80211("enter\n"); - - lockdep_assert_held(&il->mutex); - - if (!il->beacon_enabled) { - IL_ERR("update beacon with no beaconing enabled\n"); - dev_kfree_skb(skb); - return; - } - - spin_lock_irqsave(&il->lock, flags); - - if (il->beacon_skb) - dev_kfree_skb(il->beacon_skb); - - il->beacon_skb = skb; - - timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp; - il->timestamp = le64_to_cpu(timestamp); - - D_MAC80211("leave\n"); - spin_unlock_irqrestore(&il->lock, flags); - - if (!il_is_ready_rf(il)) { - D_MAC80211("leave - RF not ready\n"); - return; - } - - il->ops->post_associate(il); -} - -void -il_mac_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - struct ieee80211_bss_conf *bss_conf, u32 changes) -{ - struct il_priv *il = hw->priv; - int ret; - - mutex_lock(&il->mutex); - D_MAC80211("enter: changes 0x%x\n", changes); - - if (!il_is_alive(il)) { - D_MAC80211("leave - not alive\n"); - mutex_unlock(&il->mutex); - return; - } - - if (changes & BSS_CHANGED_QOS) { - unsigned long flags; - - spin_lock_irqsave(&il->lock, flags); - il->qos_data.qos_active = bss_conf->qos; - il_update_qos(il); - spin_unlock_irqrestore(&il->lock, flags); - } - - if (changes & BSS_CHANGED_BEACON_ENABLED) { - /* FIXME: can we remove beacon_enabled ? */ - if (vif->bss_conf.enable_beacon) - il->beacon_enabled = true; - else - il->beacon_enabled = false; - } - - if (changes & BSS_CHANGED_BSSID) { - D_MAC80211("BSSID %pM\n", bss_conf->bssid); - - /* - * On passive channel we wait with blocked queues to see if - * there is traffic on that channel. If no frame will be - * received (what is very unlikely since scan detects AP on - * that channel, but theoretically possible), mac80211 associate - * procedure will time out and mac80211 will call us with NULL - * bssid. We have to unblock queues on such condition. - */ - if (is_zero_ether_addr(bss_conf->bssid)) - il_wake_queues_by_reason(il, IL_STOP_REASON_PASSIVE); - - /* - * If there is currently a HW scan going on in the background, - * then we need to cancel it, otherwise sometimes we are not - * able to authenticate (FIXME: why ?) - */ - if (il_scan_cancel_timeout(il, 100)) { - D_MAC80211("leave - scan abort failed\n"); - mutex_unlock(&il->mutex); - return; - } - - /* mac80211 only sets assoc when in STATION mode */ - memcpy(il->staging.bssid_addr, bss_conf->bssid, ETH_ALEN); - - /* FIXME: currently needed in a few places */ - memcpy(il->bssid, bss_conf->bssid, ETH_ALEN); - } - - /* - * This needs to be after setting the BSSID in case - * mac80211 decides to do both changes at once because - * it will invoke post_associate. - */ - if (vif->type == NL80211_IFTYPE_ADHOC && (changes & BSS_CHANGED_BEACON)) - il_beacon_update(hw, vif); - - if (changes & BSS_CHANGED_ERP_PREAMBLE) { - D_MAC80211("ERP_PREAMBLE %d\n", bss_conf->use_short_preamble); - if (bss_conf->use_short_preamble) - il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; - else - il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; - } - - if (changes & BSS_CHANGED_ERP_CTS_PROT) { - D_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot); - if (bss_conf->use_cts_prot && il->band != IEEE80211_BAND_5GHZ) - il->staging.flags |= RXON_FLG_TGG_PROTECT_MSK; - else - il->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK; - if (bss_conf->use_cts_prot) - il->staging.flags |= RXON_FLG_SELF_CTS_EN; - else - il->staging.flags &= ~RXON_FLG_SELF_CTS_EN; - } - - if (changes & BSS_CHANGED_BASIC_RATES) { - /* XXX use this information - * - * To do that, remove code from il_set_rate() and put something - * like this here: - * - if (A-band) - il->staging.ofdm_basic_rates = - bss_conf->basic_rates; - else - il->staging.ofdm_basic_rates = - bss_conf->basic_rates >> 4; - il->staging.cck_basic_rates = - bss_conf->basic_rates & 0xF; - */ - } - - if (changes & BSS_CHANGED_HT) { - il_ht_conf(il, vif); - - if (il->ops->set_rxon_chain) - il->ops->set_rxon_chain(il); - } - - if (changes & BSS_CHANGED_ASSOC) { - D_MAC80211("ASSOC %d\n", bss_conf->assoc); - if (bss_conf->assoc) { - il->timestamp = bss_conf->sync_tsf; - - if (!il_is_rfkill(il)) - il->ops->post_associate(il); - } else - il_set_no_assoc(il, vif); - } - - if (changes && il_is_associated(il) && bss_conf->aid) { - D_MAC80211("Changes (%#x) while associated\n", changes); - ret = il_send_rxon_assoc(il); - if (!ret) { - /* Sync active_rxon with latest change. */ - memcpy((void *)&il->active, &il->staging, - sizeof(struct il_rxon_cmd)); - } - } - - if (changes & BSS_CHANGED_BEACON_ENABLED) { - if (vif->bss_conf.enable_beacon) { - memcpy(il->staging.bssid_addr, bss_conf->bssid, - ETH_ALEN); - memcpy(il->bssid, bss_conf->bssid, ETH_ALEN); - il->ops->config_ap(il); - } else - il_set_no_assoc(il, vif); - } - - if (changes & BSS_CHANGED_IBSS) { - ret = il->ops->manage_ibss_station(il, vif, - bss_conf->ibss_joined); - if (ret) - IL_ERR("failed to %s IBSS station %pM\n", - bss_conf->ibss_joined ? "add" : "remove", - bss_conf->bssid); - } - - D_MAC80211("leave\n"); - mutex_unlock(&il->mutex); -} -EXPORT_SYMBOL(il_mac_bss_info_changed); - -irqreturn_t -il_isr(int irq, void *data) -{ - struct il_priv *il = data; - u32 inta, inta_mask; - u32 inta_fh; - unsigned long flags; - if (!il) - return IRQ_NONE; - - spin_lock_irqsave(&il->lock, flags); - - /* Disable (but don't clear!) interrupts here to avoid - * back-to-back ISRs and sporadic interrupts from our NIC. - * If we have something to service, the tasklet will re-enable ints. - * If we *don't* have something, we'll re-enable before leaving here. */ - inta_mask = _il_rd(il, CSR_INT_MASK); /* just for debug */ - _il_wr(il, CSR_INT_MASK, 0x00000000); - - /* Discover which interrupts are active/pending */ - inta = _il_rd(il, CSR_INT); - inta_fh = _il_rd(il, CSR_FH_INT_STATUS); - - /* Ignore interrupt if there's nothing in NIC to service. - * This may be due to IRQ shared with another device, - * or due to sporadic interrupts thrown from our NIC. */ - if (!inta && !inta_fh) { - D_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n"); - goto none; - } - - if (inta == 0xFFFFFFFF || (inta & 0xFFFFFFF0) == 0xa5a5a5a0) { - /* Hardware disappeared. It might have already raised - * an interrupt */ - IL_WARN("HARDWARE GONE?? INTA == 0x%08x\n", inta); - goto unplugged; - } - - D_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", inta, inta_mask, - inta_fh); - - inta &= ~CSR_INT_BIT_SCD; - - /* il_irq_tasklet() will service interrupts and re-enable them */ - if (likely(inta || inta_fh)) - tasklet_schedule(&il->irq_tasklet); - -unplugged: - spin_unlock_irqrestore(&il->lock, flags); - return IRQ_HANDLED; - -none: - /* re-enable interrupts here since we don't have anything to service. */ - /* only Re-enable if disabled by irq */ - if (test_bit(S_INT_ENABLED, &il->status)) - il_enable_interrupts(il); - spin_unlock_irqrestore(&il->lock, flags); - return IRQ_NONE; -} -EXPORT_SYMBOL(il_isr); - -/* - * il_tx_cmd_protection: Set rts/cts. 3945 and 4965 only share this - * function. - */ -void -il_tx_cmd_protection(struct il_priv *il, struct ieee80211_tx_info *info, - __le16 fc, __le32 *tx_flags) -{ - if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) { - *tx_flags |= TX_CMD_FLG_RTS_MSK; - *tx_flags &= ~TX_CMD_FLG_CTS_MSK; - *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; - - if (!ieee80211_is_mgmt(fc)) - return; - - switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { - case cpu_to_le16(IEEE80211_STYPE_AUTH): - case cpu_to_le16(IEEE80211_STYPE_DEAUTH): - case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ): - case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ): - *tx_flags &= ~TX_CMD_FLG_RTS_MSK; - *tx_flags |= TX_CMD_FLG_CTS_MSK; - break; - } - } else if (info->control.rates[0]. - flags & IEEE80211_TX_RC_USE_CTS_PROTECT) { - *tx_flags &= ~TX_CMD_FLG_RTS_MSK; - *tx_flags |= TX_CMD_FLG_CTS_MSK; - *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; - } -} -EXPORT_SYMBOL(il_tx_cmd_protection); diff --git a/drivers/net/wireless/iwlegacy/common.h b/drivers/net/wireless/iwlegacy/common.h deleted file mode 100644 index ce52cf114fde..000000000000 --- a/drivers/net/wireless/iwlegacy/common.h +++ /dev/null @@ -1,3084 +0,0 @@ -/****************************************************************************** - * - * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA - * - * The full GNU General Public License is included in this distribution in the - * file called LICENSE. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - *****************************************************************************/ -#ifndef __il_core_h__ -#define __il_core_h__ - -#include <linux/interrupt.h> -#include <linux/pci.h> /* for struct pci_device_id */ -#include <linux/kernel.h> -#include <linux/leds.h> -#include <linux/wait.h> -#include <linux/io.h> -#include <net/mac80211.h> -#include <net/ieee80211_radiotap.h> - -#include "commands.h" -#include "csr.h" -#include "prph.h" - -struct il_host_cmd; -struct il_cmd; -struct il_tx_queue; - -#define IL_ERR(f, a...) dev_err(&il->pci_dev->dev, f, ## a) -#define IL_WARN(f, a...) dev_warn(&il->pci_dev->dev, f, ## a) -#define IL_INFO(f, a...) dev_info(&il->pci_dev->dev, f, ## a) - -#define RX_QUEUE_SIZE 256 -#define RX_QUEUE_MASK 255 -#define RX_QUEUE_SIZE_LOG 8 - -/* - * RX related structures and functions - */ -#define RX_FREE_BUFFERS 64 -#define RX_LOW_WATERMARK 8 - -#define U32_PAD(n) ((4-(n))&0x3) - -/* CT-KILL constants */ -#define CT_KILL_THRESHOLD_LEGACY 110 /* in Celsius */ - -/* Default noise level to report when noise measurement is not available. - * This may be because we're: - * 1) Not associated (4965, no beacon stats being sent to driver) - * 2) Scanning (noise measurement does not apply to associated channel) - * 3) Receiving CCK (3945 delivers noise info only for OFDM frames) - * Use default noise value of -127 ... this is below the range of measurable - * Rx dBm for either 3945 or 4965, so it can indicate "unmeasurable" to user. - * Also, -127 works better than 0 when averaging frames with/without - * noise info (e.g. averaging might be done in app); measured dBm values are - * always negative ... using a negative value as the default keeps all - * averages within an s8's (used in some apps) range of negative values. */ -#define IL_NOISE_MEAS_NOT_AVAILABLE (-127) - -/* - * RTS threshold here is total size [2347] minus 4 FCS bytes - * Per spec: - * a value of 0 means RTS on all data/management packets - * a value > max MSDU size means no RTS - * else RTS for data/management frames where MPDU is larger - * than RTS value. - */ -#define DEFAULT_RTS_THRESHOLD 2347U -#define MIN_RTS_THRESHOLD 0U -#define MAX_RTS_THRESHOLD 2347U -#define MAX_MSDU_SIZE 2304U -#define MAX_MPDU_SIZE 2346U -#define DEFAULT_BEACON_INTERVAL 100U -#define DEFAULT_SHORT_RETRY_LIMIT 7U -#define DEFAULT_LONG_RETRY_LIMIT 4U - -struct il_rx_buf { - dma_addr_t page_dma; - struct page *page; - struct list_head list; -}; - -#define rxb_addr(r) page_address(r->page) - -/* defined below */ -struct il_device_cmd; - -struct il_cmd_meta { - /* only for SYNC commands, iff the reply skb is wanted */ - struct il_host_cmd *source; - /* - * only for ASYNC commands - * (which is somewhat stupid -- look at common.c for instance - * which duplicates a bunch of code because the callback isn't - * invoked for SYNC commands, if it were and its result passed - * through it would be simpler...) - */ - void (*callback) (struct il_priv *il, struct il_device_cmd *cmd, - struct il_rx_pkt *pkt); - - /* The CMD_SIZE_HUGE flag bit indicates that the command - * structure is stored at the end of the shared queue memory. */ - u32 flags; - - DEFINE_DMA_UNMAP_ADDR(mapping); - DEFINE_DMA_UNMAP_LEN(len); -}; - -/* - * Generic queue structure - * - * Contains common data for Rx and Tx queues - */ -struct il_queue { - int n_bd; /* number of BDs in this queue */ - int write_ptr; /* 1-st empty entry (idx) host_w */ - int read_ptr; /* last used entry (idx) host_r */ - /* use for monitoring and recovering the stuck queue */ - dma_addr_t dma_addr; /* physical addr for BD's */ - int n_win; /* safe queue win */ - u32 id; - int low_mark; /* low watermark, resume queue if free - * space more than this */ - int high_mark; /* high watermark, stop queue if free - * space less than this */ -}; - -/** - * struct il_tx_queue - Tx Queue for DMA - * @q: generic Rx/Tx queue descriptor - * @bd: base of circular buffer of TFDs - * @cmd: array of command/TX buffer pointers - * @meta: array of meta data for each command/tx buffer - * @dma_addr_cmd: physical address of cmd/tx buffer array - * @skbs: array of per-TFD socket buffer pointers - * @time_stamp: time (in jiffies) of last read_ptr change - * @need_update: indicates need to update read/write idx - * @sched_retry: indicates queue is high-throughput aggregation (HT AGG) enabled - * - * A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame - * descriptors) and required locking structures. - */ -#define TFD_TX_CMD_SLOTS 256 -#define TFD_CMD_SLOTS 32 - -struct il_tx_queue { - struct il_queue q; - void *tfds; - struct il_device_cmd **cmd; - struct il_cmd_meta *meta; - struct sk_buff **skbs; - unsigned long time_stamp; - u8 need_update; - u8 sched_retry; - u8 active; - u8 swq_id; -}; - -/* - * EEPROM access time values: - * - * Driver initiates EEPROM read by writing byte address << 1 to CSR_EEPROM_REG. - * Driver then polls CSR_EEPROM_REG for CSR_EEPROM_REG_READ_VALID_MSK (0x1). - * When polling, wait 10 uSec between polling loops, up to a maximum 5000 uSec. - * Driver reads 16-bit value from bits 31-16 of CSR_EEPROM_REG. - */ -#define IL_EEPROM_ACCESS_TIMEOUT 5000 /* uSec */ - -#define IL_EEPROM_SEM_TIMEOUT 10 /* microseconds */ -#define IL_EEPROM_SEM_RETRY_LIMIT 1000 /* number of attempts (not time) */ - -/* - * Regulatory channel usage flags in EEPROM struct il4965_eeprom_channel.flags. - * - * IBSS and/or AP operation is allowed *only* on those channels with - * (VALID && IBSS && ACTIVE && !RADAR). This restriction is in place because - * RADAR detection is not supported by the 4965 driver, but is a - * requirement for establishing a new network for legal operation on channels - * requiring RADAR detection or restricting ACTIVE scanning. - * - * NOTE: "WIDE" flag does not indicate anything about "HT40" 40 MHz channels. - * It only indicates that 20 MHz channel use is supported; HT40 channel - * usage is indicated by a separate set of regulatory flags for each - * HT40 channel pair. - * - * NOTE: Using a channel inappropriately will result in a uCode error! - */ -#define IL_NUM_TX_CALIB_GROUPS 5 -enum { - EEPROM_CHANNEL_VALID = (1 << 0), /* usable for this SKU/geo */ - EEPROM_CHANNEL_IBSS = (1 << 1), /* usable as an IBSS channel */ - /* Bit 2 Reserved */ - EEPROM_CHANNEL_ACTIVE = (1 << 3), /* active scanning allowed */ - EEPROM_CHANNEL_RADAR = (1 << 4), /* radar detection required */ - EEPROM_CHANNEL_WIDE = (1 << 5), /* 20 MHz channel okay */ - /* Bit 6 Reserved (was Narrow Channel) */ - EEPROM_CHANNEL_DFS = (1 << 7), /* dynamic freq selection candidate */ -}; - -/* SKU Capabilities */ -/* 3945 only */ -#define EEPROM_SKU_CAP_SW_RF_KILL_ENABLE (1 << 0) -#define EEPROM_SKU_CAP_HW_RF_KILL_ENABLE (1 << 1) - -/* *regulatory* channel data format in eeprom, one for each channel. - * There are separate entries for HT40 (40 MHz) vs. normal (20 MHz) channels. */ -struct il_eeprom_channel { - u8 flags; /* EEPROM_CHANNEL_* flags copied from EEPROM */ - s8 max_power_avg; /* max power (dBm) on this chnl, limit 31 */ -} __packed; - -/* 3945 Specific */ -#define EEPROM_3945_EEPROM_VERSION (0x2f) - -/* 4965 has two radio transmitters (and 3 radio receivers) */ -#define EEPROM_TX_POWER_TX_CHAINS (2) - -/* 4965 has room for up to 8 sets of txpower calibration data */ -#define EEPROM_TX_POWER_BANDS (8) - -/* 4965 factory calibration measures txpower gain settings for - * each of 3 target output levels */ -#define EEPROM_TX_POWER_MEASUREMENTS (3) - -/* 4965 Specific */ -/* 4965 driver does not work with txpower calibration version < 5 */ -#define EEPROM_4965_TX_POWER_VERSION (5) -#define EEPROM_4965_EEPROM_VERSION (0x2f) -#define EEPROM_4965_CALIB_VERSION_OFFSET (2*0xB6) /* 2 bytes */ -#define EEPROM_4965_CALIB_TXPOWER_OFFSET (2*0xE8) /* 48 bytes */ -#define EEPROM_4965_BOARD_REVISION (2*0x4F) /* 2 bytes */ -#define EEPROM_4965_BOARD_PBA (2*0x56+1) /* 9 bytes */ - -/* 2.4 GHz */ -extern const u8 il_eeprom_band_1[14]; - -/* - * factory calibration data for one txpower level, on one channel, - * measured on one of the 2 tx chains (radio transmitter and associated - * antenna). EEPROM contains: - * - * 1) Temperature (degrees Celsius) of device when measurement was made. - * - * 2) Gain table idx used to achieve the target measurement power. - * This refers to the "well-known" gain tables (see 4965.h). - * - * 3) Actual measured output power, in half-dBm ("34" = 17 dBm). - * - * 4) RF power amplifier detector level measurement (not used). - */ -struct il_eeprom_calib_measure { - u8 temperature; /* Device temperature (Celsius) */ - u8 gain_idx; /* Index into gain table */ - u8 actual_pow; /* Measured RF output power, half-dBm */ - s8 pa_det; /* Power amp detector level (not used) */ -} __packed; - -/* - * measurement set for one channel. EEPROM contains: - * - * 1) Channel number measured - * - * 2) Measurements for each of 3 power levels for each of 2 radio transmitters - * (a.k.a. "tx chains") (6 measurements altogether) - */ -struct il_eeprom_calib_ch_info { - u8 ch_num; - struct il_eeprom_calib_measure - measurements[EEPROM_TX_POWER_TX_CHAINS] - [EEPROM_TX_POWER_MEASUREMENTS]; -} __packed; - -/* - * txpower subband info. - * - * For each frequency subband, EEPROM contains the following: - * - * 1) First and last channels within range of the subband. "0" values - * indicate that this sample set is not being used. - * - * 2) Sample measurement sets for 2 channels close to the range endpoints. - */ -struct il_eeprom_calib_subband_info { - u8 ch_from; /* channel number of lowest channel in subband */ - u8 ch_to; /* channel number of highest channel in subband */ - struct il_eeprom_calib_ch_info ch1; - struct il_eeprom_calib_ch_info ch2; -} __packed; - -/* - * txpower calibration info. EEPROM contains: - * - * 1) Factory-measured saturation power levels (maximum levels at which - * tx power amplifier can output a signal without too much distortion). - * There is one level for 2.4 GHz band and one for 5 GHz band. These - * values apply to all channels within each of the bands. - * - * 2) Factory-measured power supply voltage level. This is assumed to be - * constant (i.e. same value applies to all channels/bands) while the - * factory measurements are being made. - * - * 3) Up to 8 sets of factory-measured txpower calibration values. - * These are for different frequency ranges, since txpower gain - * characteristics of the analog radio circuitry vary with frequency. - * - * Not all sets need to be filled with data; - * struct il_eeprom_calib_subband_info contains range of channels - * (0 if unused) for each set of data. - */ -struct il_eeprom_calib_info { - u8 saturation_power24; /* half-dBm (e.g. "34" = 17 dBm) */ - u8 saturation_power52; /* half-dBm */ - __le16 voltage; /* signed */ - struct il_eeprom_calib_subband_info band_info[EEPROM_TX_POWER_BANDS]; -} __packed; - -/* General */ -#define EEPROM_DEVICE_ID (2*0x08) /* 2 bytes */ -#define EEPROM_MAC_ADDRESS (2*0x15) /* 6 bytes */ -#define EEPROM_BOARD_REVISION (2*0x35) /* 2 bytes */ -#define EEPROM_BOARD_PBA_NUMBER (2*0x3B+1) /* 9 bytes */ -#define EEPROM_VERSION (2*0x44) /* 2 bytes */ -#define EEPROM_SKU_CAP (2*0x45) /* 2 bytes */ -#define EEPROM_OEM_MODE (2*0x46) /* 2 bytes */ -#define EEPROM_WOWLAN_MODE (2*0x47) /* 2 bytes */ -#define EEPROM_RADIO_CONFIG (2*0x48) /* 2 bytes */ -#define EEPROM_NUM_MAC_ADDRESS (2*0x4C) /* 2 bytes */ - -/* The following masks are to be applied on EEPROM_RADIO_CONFIG */ -#define EEPROM_RF_CFG_TYPE_MSK(x) (x & 0x3) /* bits 0-1 */ -#define EEPROM_RF_CFG_STEP_MSK(x) ((x >> 2) & 0x3) /* bits 2-3 */ -#define EEPROM_RF_CFG_DASH_MSK(x) ((x >> 4) & 0x3) /* bits 4-5 */ -#define EEPROM_RF_CFG_PNUM_MSK(x) ((x >> 6) & 0x3) /* bits 6-7 */ -#define EEPROM_RF_CFG_TX_ANT_MSK(x) ((x >> 8) & 0xF) /* bits 8-11 */ -#define EEPROM_RF_CFG_RX_ANT_MSK(x) ((x >> 12) & 0xF) /* bits 12-15 */ - -#define EEPROM_3945_RF_CFG_TYPE_MAX 0x0 -#define EEPROM_4965_RF_CFG_TYPE_MAX 0x1 - -/* - * Per-channel regulatory data. - * - * Each channel that *might* be supported by iwl has a fixed location - * in EEPROM containing EEPROM_CHANNEL_* usage flags (LSB) and max regulatory - * txpower (MSB). - * - * Entries immediately below are for 20 MHz channel width. HT40 (40 MHz) - * channels (only for 4965, not supported by 3945) appear later in the EEPROM. - * - * 2.4 GHz channels 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 - */ -#define EEPROM_REGULATORY_SKU_ID (2*0x60) /* 4 bytes */ -#define EEPROM_REGULATORY_BAND_1 (2*0x62) /* 2 bytes */ -#define EEPROM_REGULATORY_BAND_1_CHANNELS (2*0x63) /* 28 bytes */ - -/* - * 4.9 GHz channels 183, 184, 185, 187, 188, 189, 192, 196, - * 5.0 GHz channels 7, 8, 11, 12, 16 - * (4915-5080MHz) (none of these is ever supported) - */ -#define EEPROM_REGULATORY_BAND_2 (2*0x71) /* 2 bytes */ -#define EEPROM_REGULATORY_BAND_2_CHANNELS (2*0x72) /* 26 bytes */ - -/* - * 5.2 GHz channels 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64 - * (5170-5320MHz) - */ -#define EEPROM_REGULATORY_BAND_3 (2*0x7F) /* 2 bytes */ -#define EEPROM_REGULATORY_BAND_3_CHANNELS (2*0x80) /* 24 bytes */ - -/* - * 5.5 GHz channels 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 - * (5500-5700MHz) - */ -#define EEPROM_REGULATORY_BAND_4 (2*0x8C) /* 2 bytes */ -#define EEPROM_REGULATORY_BAND_4_CHANNELS (2*0x8D) /* 22 bytes */ - -/* - * 5.7 GHz channels 145, 149, 153, 157, 161, 165 - * (5725-5825MHz) - */ -#define EEPROM_REGULATORY_BAND_5 (2*0x98) /* 2 bytes */ -#define EEPROM_REGULATORY_BAND_5_CHANNELS (2*0x99) /* 12 bytes */ - -/* - * 2.4 GHz HT40 channels 1 (5), 2 (6), 3 (7), 4 (8), 5 (9), 6 (10), 7 (11) - * - * The channel listed is the center of the lower 20 MHz half of the channel. - * The overall center frequency is actually 2 channels (10 MHz) above that, - * and the upper half of each HT40 channel is centered 4 channels (20 MHz) away - * from the lower half; e.g. the upper half of HT40 channel 1 is channel 5, - * and the overall HT40 channel width centers on channel 3. - * - * NOTE: The RXON command uses 20 MHz channel numbers to specify the - * control channel to which to tune. RXON also specifies whether the - * control channel is the upper or lower half of a HT40 channel. - * - * NOTE: 4965 does not support HT40 channels on 2.4 GHz. - */ -#define EEPROM_4965_REGULATORY_BAND_24_HT40_CHANNELS (2*0xA0) /* 14 bytes */ - -/* - * 5.2 GHz HT40 channels 36 (40), 44 (48), 52 (56), 60 (64), - * 100 (104), 108 (112), 116 (120), 124 (128), 132 (136), 149 (153), 157 (161) - */ -#define EEPROM_4965_REGULATORY_BAND_52_HT40_CHANNELS (2*0xA8) /* 22 bytes */ - -#define EEPROM_REGULATORY_BAND_NO_HT40 (0) - -int il_eeprom_init(struct il_priv *il); -void il_eeprom_free(struct il_priv *il); -const u8 *il_eeprom_query_addr(const struct il_priv *il, size_t offset); -u16 il_eeprom_query16(const struct il_priv *il, size_t offset); -int il_init_channel_map(struct il_priv *il); -void il_free_channel_map(struct il_priv *il); -const struct il_channel_info *il_get_channel_info(const struct il_priv *il, - enum ieee80211_band band, - u16 channel); - -#define IL_NUM_SCAN_RATES (2) - -struct il4965_channel_tgd_info { - u8 type; - s8 max_power; -}; - -struct il4965_channel_tgh_info { - s64 last_radar_time; -}; - -#define IL4965_MAX_RATE (33) - -struct il3945_clip_group { - /* maximum power level to prevent clipping for each rate, derived by - * us from this band's saturation power in EEPROM */ - const s8 clip_powers[IL_MAX_RATES]; -}; - -/* current Tx power values to use, one for each rate for each channel. - * requested power is limited by: - * -- regulatory EEPROM limits for this channel - * -- hardware capabilities (clip-powers) - * -- spectrum management - * -- user preference (e.g. iwconfig) - * when requested power is set, base power idx must also be set. */ -struct il3945_channel_power_info { - struct il3945_tx_power tpc; /* actual radio and DSP gain settings */ - s8 power_table_idx; /* actual (compenst'd) idx into gain table */ - s8 base_power_idx; /* gain idx for power at factory temp. */ - s8 requested_power; /* power (dBm) requested for this chnl/rate */ -}; - -/* current scan Tx power values to use, one for each scan rate for each - * channel. */ -struct il3945_scan_power_info { - struct il3945_tx_power tpc; /* actual radio and DSP gain settings */ - s8 power_table_idx; /* actual (compenst'd) idx into gain table */ - s8 requested_power; /* scan pwr (dBm) requested for chnl/rate */ -}; - -/* - * One for each channel, holds all channel setup data - * Some of the fields (e.g. eeprom and flags/max_power_avg) are redundant - * with one another! - */ -struct il_channel_info { - struct il4965_channel_tgd_info tgd; - struct il4965_channel_tgh_info tgh; - struct il_eeprom_channel eeprom; /* EEPROM regulatory limit */ - struct il_eeprom_channel ht40_eeprom; /* EEPROM regulatory limit for - * HT40 channel */ - - u8 channel; /* channel number */ - u8 flags; /* flags copied from EEPROM */ - s8 max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */ - s8 curr_txpow; /* (dBm) regulatory/spectrum/user (not h/w) limit */ - s8 min_power; /* always 0 */ - s8 scan_power; /* (dBm) regul. eeprom, direct scans, any rate */ - - u8 group_idx; /* 0-4, maps channel to group1/2/3/4/5 */ - u8 band_idx; /* 0-4, maps channel to band1/2/3/4/5 */ - enum ieee80211_band band; - - /* HT40 channel info */ - s8 ht40_max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */ - u8 ht40_flags; /* flags copied from EEPROM */ - u8 ht40_extension_channel; /* HT_IE_EXT_CHANNEL_* */ - - /* Radio/DSP gain settings for each "normal" data Tx rate. - * These include, in addition to RF and DSP gain, a few fields for - * remembering/modifying gain settings (idxes). */ - struct il3945_channel_power_info power_info[IL4965_MAX_RATE]; - - /* Radio/DSP gain settings for each scan rate, for directed scans. */ - struct il3945_scan_power_info scan_pwr_info[IL_NUM_SCAN_RATES]; -}; - -#define IL_TX_FIFO_BK 0 /* shared */ -#define IL_TX_FIFO_BE 1 -#define IL_TX_FIFO_VI 2 /* shared */ -#define IL_TX_FIFO_VO 3 -#define IL_TX_FIFO_UNUSED -1 - -/* Minimum number of queues. MAX_NUM is defined in hw specific files. - * Set the minimum to accommodate the 4 standard TX queues, 1 command - * queue, 2 (unused) HCCA queues, and 4 HT queues (one for each AC) */ -#define IL_MIN_NUM_QUEUES 10 - -#define IL_DEFAULT_CMD_QUEUE_NUM 4 - -#define IEEE80211_DATA_LEN 2304 -#define IEEE80211_4ADDR_LEN 30 -#define IEEE80211_HLEN (IEEE80211_4ADDR_LEN) -#define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN) - -struct il_frame { - union { - struct ieee80211_hdr frame; - struct il_tx_beacon_cmd beacon; - u8 raw[IEEE80211_FRAME_LEN]; - u8 cmd[360]; - } u; - struct list_head list; -}; - -enum { - CMD_SYNC = 0, - CMD_SIZE_NORMAL = 0, - CMD_NO_SKB = 0, - CMD_SIZE_HUGE = (1 << 0), - CMD_ASYNC = (1 << 1), - CMD_WANT_SKB = (1 << 2), - CMD_MAPPED = (1 << 3), -}; - -#define DEF_CMD_PAYLOAD_SIZE 320 - -/** - * struct il_device_cmd - * - * For allocation of the command and tx queues, this establishes the overall - * size of the largest command we send to uCode, except for a scan command - * (which is relatively huge; space is allocated separately). - */ -struct il_device_cmd { - struct il_cmd_header hdr; /* uCode API */ - union { - u32 flags; - u8 val8; - u16 val16; - u32 val32; - struct il_tx_cmd tx; - u8 payload[DEF_CMD_PAYLOAD_SIZE]; - } __packed cmd; -} __packed; - -#define TFD_MAX_PAYLOAD_SIZE (sizeof(struct il_device_cmd)) - -struct il_host_cmd { - const void *data; - unsigned long reply_page; - void (*callback) (struct il_priv *il, struct il_device_cmd *cmd, - struct il_rx_pkt *pkt); - u32 flags; - u16 len; - u8 id; -}; - -#define SUP_RATE_11A_MAX_NUM_CHANNELS 8 -#define SUP_RATE_11B_MAX_NUM_CHANNELS 4 -#define SUP_RATE_11G_MAX_NUM_CHANNELS 12 - -/** - * struct il_rx_queue - Rx queue - * @bd: driver's pointer to buffer of receive buffer descriptors (rbd) - * @bd_dma: bus address of buffer of receive buffer descriptors (rbd) - * @read: Shared idx to newest available Rx buffer - * @write: Shared idx to oldest written Rx packet - * @free_count: Number of pre-allocated buffers in rx_free - * @rx_free: list of free SKBs for use - * @rx_used: List of Rx buffers with no SKB - * @need_update: flag to indicate we need to update read/write idx - * @rb_stts: driver's pointer to receive buffer status - * @rb_stts_dma: bus address of receive buffer status - * - * NOTE: rx_free and rx_used are used as a FIFO for il_rx_bufs - */ -struct il_rx_queue { - __le32 *bd; - dma_addr_t bd_dma; - struct il_rx_buf pool[RX_QUEUE_SIZE + RX_FREE_BUFFERS]; - struct il_rx_buf *queue[RX_QUEUE_SIZE]; - u32 read; - u32 write; - u32 free_count; - u32 write_actual; - struct list_head rx_free; - struct list_head rx_used; - int need_update; - struct il_rb_status *rb_stts; - dma_addr_t rb_stts_dma; - spinlock_t lock; -}; - -#define IL_SUPPORTED_RATES_IE_LEN 8 - -#define MAX_TID_COUNT 9 - -#define IL_INVALID_RATE 0xFF -#define IL_INVALID_VALUE -1 - -/** - * struct il_ht_agg -- aggregation status while waiting for block-ack - * @txq_id: Tx queue used for Tx attempt - * @frame_count: # frames attempted by Tx command - * @wait_for_ba: Expect block-ack before next Tx reply - * @start_idx: Index of 1st Transmit Frame Descriptor (TFD) in Tx win - * @bitmap0: Low order bitmap, one bit for each frame pending ACK in Tx win - * @bitmap1: High order, one bit for each frame pending ACK in Tx win - * @rate_n_flags: Rate at which Tx was attempted - * - * If C_TX indicates that aggregation was attempted, driver must wait - * for block ack (N_COMPRESSED_BA). This struct stores tx reply info - * until block ack arrives. - */ -struct il_ht_agg { - u16 txq_id; - u16 frame_count; - u16 wait_for_ba; - u16 start_idx; - u64 bitmap; - u32 rate_n_flags; -#define IL_AGG_OFF 0 -#define IL_AGG_ON 1 -#define IL_EMPTYING_HW_QUEUE_ADDBA 2 -#define IL_EMPTYING_HW_QUEUE_DELBA 3 - u8 state; -}; - -struct il_tid_data { - u16 seq_number; /* 4965 only */ - u16 tfds_in_queue; - struct il_ht_agg agg; -}; - -struct il_hw_key { - u32 cipher; - int keylen; - u8 keyidx; - u8 key[32]; -}; - -union il_ht_rate_supp { - u16 rates; - struct { - u8 siso_rate; - u8 mimo_rate; - }; -}; - -#define CFG_HT_RX_AMPDU_FACTOR_8K (0x0) -#define CFG_HT_RX_AMPDU_FACTOR_16K (0x1) -#define CFG_HT_RX_AMPDU_FACTOR_32K (0x2) -#define CFG_HT_RX_AMPDU_FACTOR_64K (0x3) -#define CFG_HT_RX_AMPDU_FACTOR_DEF CFG_HT_RX_AMPDU_FACTOR_64K -#define CFG_HT_RX_AMPDU_FACTOR_MAX CFG_HT_RX_AMPDU_FACTOR_64K -#define CFG_HT_RX_AMPDU_FACTOR_MIN CFG_HT_RX_AMPDU_FACTOR_8K - -/* - * Maximal MPDU density for TX aggregation - * 4 - 2us density - * 5 - 4us density - * 6 - 8us density - * 7 - 16us density - */ -#define CFG_HT_MPDU_DENSITY_2USEC (0x4) -#define CFG_HT_MPDU_DENSITY_4USEC (0x5) -#define CFG_HT_MPDU_DENSITY_8USEC (0x6) -#define CFG_HT_MPDU_DENSITY_16USEC (0x7) -#define CFG_HT_MPDU_DENSITY_DEF CFG_HT_MPDU_DENSITY_4USEC -#define CFG_HT_MPDU_DENSITY_MAX CFG_HT_MPDU_DENSITY_16USEC -#define CFG_HT_MPDU_DENSITY_MIN (0x1) - -struct il_ht_config { - bool single_chain_sufficient; - enum ieee80211_smps_mode smps; /* current smps mode */ -}; - -/* QoS structures */ -struct il_qos_info { - int qos_active; - struct il_qosparam_cmd def_qos_parm; -}; - -/* - * Structure should be accessed with sta_lock held. When station addition - * is in progress (IL_STA_UCODE_INPROGRESS) it is possible to access only - * the commands (il_addsta_cmd and il_link_quality_cmd) without - * sta_lock held. - */ -struct il_station_entry { - struct il_addsta_cmd sta; - struct il_tid_data tid[MAX_TID_COUNT]; - u8 used; - struct il_hw_key keyinfo; - struct il_link_quality_cmd *lq; -}; - -struct il_station_priv_common { - u8 sta_id; -}; - -/** - * struct il_vif_priv - driver's ilate per-interface information - * - * When mac80211 allocates a virtual interface, it can allocate - * space for us to put data into. - */ -struct il_vif_priv { - u8 ibss_bssid_sta_id; -}; - -/* one for each uCode image (inst/data, boot/init/runtime) */ -struct fw_desc { - void *v_addr; /* access by driver */ - dma_addr_t p_addr; /* access by card's busmaster DMA */ - u32 len; /* bytes */ -}; - -/* uCode file layout */ -struct il_ucode_header { - __le32 ver; /* major/minor/API/serial */ - struct { - __le32 inst_size; /* bytes of runtime code */ - __le32 data_size; /* bytes of runtime data */ - __le32 init_size; /* bytes of init code */ - __le32 init_data_size; /* bytes of init data */ - __le32 boot_size; /* bytes of bootstrap code */ - u8 data[0]; /* in same order as sizes */ - } v1; -}; - -struct il4965_ibss_seq { - u8 mac[ETH_ALEN]; - u16 seq_num; - u16 frag_num; - unsigned long packet_time; - struct list_head list; -}; - -struct il_sensitivity_ranges { - u16 min_nrg_cck; - u16 max_nrg_cck; - - u16 nrg_th_cck; - u16 nrg_th_ofdm; - - u16 auto_corr_min_ofdm; - u16 auto_corr_min_ofdm_mrc; - u16 auto_corr_min_ofdm_x1; - u16 auto_corr_min_ofdm_mrc_x1; - - u16 auto_corr_max_ofdm; - u16 auto_corr_max_ofdm_mrc; - u16 auto_corr_max_ofdm_x1; - u16 auto_corr_max_ofdm_mrc_x1; - - u16 auto_corr_max_cck; - u16 auto_corr_max_cck_mrc; - u16 auto_corr_min_cck; - u16 auto_corr_min_cck_mrc; - - u16 barker_corr_th_min; - u16 barker_corr_th_min_mrc; - u16 nrg_th_cca; -}; - -#define KELVIN_TO_CELSIUS(x) ((x)-273) -#define CELSIUS_TO_KELVIN(x) ((x)+273) - -/** - * struct il_hw_params - * @bcast_id: f/w broadcast station ID - * @max_txq_num: Max # Tx queues supported - * @dma_chnl_num: Number of Tx DMA/FIFO channels - * @scd_bc_tbls_size: size of scheduler byte count tables - * @tfd_size: TFD size - * @tx/rx_chains_num: Number of TX/RX chains - * @valid_tx/rx_ant: usable antennas - * @max_rxq_size: Max # Rx frames in Rx queue (must be power-of-2) - * @max_rxq_log: Log-base-2 of max_rxq_size - * @rx_page_order: Rx buffer page order - * @rx_wrt_ptr_reg: FH{39}_RSCSR_CHNL0_WPTR - * @max_stations: - * @ht40_channel: is 40MHz width possible in band 2.4 - * BIT(IEEE80211_BAND_5GHZ) BIT(IEEE80211_BAND_5GHZ) - * @sw_crypto: 0 for hw, 1 for sw - * @max_xxx_size: for ucode uses - * @ct_kill_threshold: temperature threshold - * @beacon_time_tsf_bits: number of valid tsf bits for beacon time - * @struct il_sensitivity_ranges: range of sensitivity values - */ -struct il_hw_params { - u8 bcast_id; - u8 max_txq_num; - u8 dma_chnl_num; - u16 scd_bc_tbls_size; - u32 tfd_size; - u8 tx_chains_num; - u8 rx_chains_num; - u8 valid_tx_ant; - u8 valid_rx_ant; - u16 max_rxq_size; - u16 max_rxq_log; - u32 rx_page_order; - u32 rx_wrt_ptr_reg; - u8 max_stations; - u8 ht40_channel; - u8 max_beacon_itrvl; /* in 1024 ms */ - u32 max_inst_size; - u32 max_data_size; - u32 max_bsm_size; - u32 ct_kill_threshold; /* value in hw-dependent units */ - u16 beacon_time_tsf_bits; - const struct il_sensitivity_ranges *sens; -}; - -/****************************************************************************** - * - * Functions implemented in core module which are forward declared here - * for use by iwl-[4-5].c - * - * NOTE: The implementation of these functions are not hardware specific - * which is why they are in the core module files. - * - * Naming convention -- - * il_ <-- Is part of iwlwifi - * iwlXXXX_ <-- Hardware specific (implemented in iwl-XXXX.c for XXXX) - * il4965_bg_ <-- Called from work queue context - * il4965_mac_ <-- mac80211 callback - * - ****************************************************************************/ -void il4965_update_chain_flags(struct il_priv *il); -extern const u8 il_bcast_addr[ETH_ALEN]; -int il_queue_space(const struct il_queue *q); -static inline int -il_queue_used(const struct il_queue *q, int i) -{ - return q->write_ptr >= q->read_ptr ? (i >= q->read_ptr && - i < q->write_ptr) : !(i < - q->read_ptr - && i >= - q-> - write_ptr); -} - -static inline u8 -il_get_cmd_idx(struct il_queue *q, u32 idx, int is_huge) -{ - /* - * This is for init calibration result and scan command which - * required buffer > TFD_MAX_PAYLOAD_SIZE, - * the big buffer at end of command array - */ - if (is_huge) - return q->n_win; /* must be power of 2 */ - - /* Otherwise, use normal size buffers */ - return idx & (q->n_win - 1); -} - -struct il_dma_ptr { - dma_addr_t dma; - void *addr; - size_t size; -}; - -#define IL_OPERATION_MODE_AUTO 0 -#define IL_OPERATION_MODE_HT_ONLY 1 -#define IL_OPERATION_MODE_MIXED 2 -#define IL_OPERATION_MODE_20MHZ 3 - -#define IL_TX_CRC_SIZE 4 -#define IL_TX_DELIMITER_SIZE 4 - -#define TX_POWER_IL_ILLEGAL_VOLTAGE -10000 - -/* Sensitivity and chain noise calibration */ -#define INITIALIZATION_VALUE 0xFFFF -#define IL4965_CAL_NUM_BEACONS 20 -#define IL_CAL_NUM_BEACONS 16 -#define MAXIMUM_ALLOWED_PATHLOSS 15 - -#define CHAIN_NOISE_MAX_DELTA_GAIN_CODE 3 - -#define MAX_FA_OFDM 50 -#define MIN_FA_OFDM 5 -#define MAX_FA_CCK 50 -#define MIN_FA_CCK 5 - -#define AUTO_CORR_STEP_OFDM 1 - -#define AUTO_CORR_STEP_CCK 3 -#define AUTO_CORR_MAX_TH_CCK 160 - -#define NRG_DIFF 2 -#define NRG_STEP_CCK 2 -#define NRG_MARGIN 8 -#define MAX_NUMBER_CCK_NO_FA 100 - -#define AUTO_CORR_CCK_MIN_VAL_DEF (125) - -#define CHAIN_A 0 -#define CHAIN_B 1 -#define CHAIN_C 2 -#define CHAIN_NOISE_DELTA_GAIN_INIT_VAL 4 -#define ALL_BAND_FILTER 0xFF00 -#define IN_BAND_FILTER 0xFF -#define MIN_AVERAGE_NOISE_MAX_VALUE 0xFFFFFFFF - -#define NRG_NUM_PREV_STAT_L 20 -#define NUM_RX_CHAINS 3 - -enum il4965_false_alarm_state { - IL_FA_TOO_MANY = 0, - IL_FA_TOO_FEW = 1, - IL_FA_GOOD_RANGE = 2, -}; - -enum il4965_chain_noise_state { - IL_CHAIN_NOISE_ALIVE = 0, /* must be 0 */ - IL_CHAIN_NOISE_ACCUMULATE, - IL_CHAIN_NOISE_CALIBRATED, - IL_CHAIN_NOISE_DONE, -}; - -enum ucode_type { - UCODE_NONE = 0, - UCODE_INIT, - UCODE_RT -}; - -/* Sensitivity calib data */ -struct il_sensitivity_data { - u32 auto_corr_ofdm; - u32 auto_corr_ofdm_mrc; - u32 auto_corr_ofdm_x1; - u32 auto_corr_ofdm_mrc_x1; - u32 auto_corr_cck; - u32 auto_corr_cck_mrc; - - u32 last_bad_plcp_cnt_ofdm; - u32 last_fa_cnt_ofdm; - u32 last_bad_plcp_cnt_cck; - u32 last_fa_cnt_cck; - - u32 nrg_curr_state; - u32 nrg_prev_state; - u32 nrg_value[10]; - u8 nrg_silence_rssi[NRG_NUM_PREV_STAT_L]; - u32 nrg_silence_ref; - u32 nrg_energy_idx; - u32 nrg_silence_idx; - u32 nrg_th_cck; - s32 nrg_auto_corr_silence_diff; - u32 num_in_cck_no_fa; - u32 nrg_th_ofdm; - - u16 barker_corr_th_min; - u16 barker_corr_th_min_mrc; - u16 nrg_th_cca; -}; - -/* Chain noise (differential Rx gain) calib data */ -struct il_chain_noise_data { - u32 active_chains; - u32 chain_noise_a; - u32 chain_noise_b; - u32 chain_noise_c; - u32 chain_signal_a; - u32 chain_signal_b; - u32 chain_signal_c; - u16 beacon_count; - u8 disconn_array[NUM_RX_CHAINS]; - u8 delta_gain_code[NUM_RX_CHAINS]; - u8 radio_write; - u8 state; -}; - -#define EEPROM_SEM_TIMEOUT 10 /* milliseconds */ -#define EEPROM_SEM_RETRY_LIMIT 1000 /* number of attempts (not time) */ - -#define IL_TRAFFIC_ENTRIES (256) -#define IL_TRAFFIC_ENTRY_SIZE (64) - -enum { - MEASUREMENT_READY = (1 << 0), - MEASUREMENT_ACTIVE = (1 << 1), -}; - -/* interrupt stats */ -struct isr_stats { - u32 hw; - u32 sw; - u32 err_code; - u32 sch; - u32 alive; - u32 rfkill; - u32 ctkill; - u32 wakeup; - u32 rx; - u32 handlers[IL_CN_MAX]; - u32 tx; - u32 unhandled; -}; - -/* management stats */ -enum il_mgmt_stats { - MANAGEMENT_ASSOC_REQ = 0, - MANAGEMENT_ASSOC_RESP, - MANAGEMENT_REASSOC_REQ, - MANAGEMENT_REASSOC_RESP, - MANAGEMENT_PROBE_REQ, - MANAGEMENT_PROBE_RESP, - MANAGEMENT_BEACON, - MANAGEMENT_ATIM, - MANAGEMENT_DISASSOC, - MANAGEMENT_AUTH, - MANAGEMENT_DEAUTH, - MANAGEMENT_ACTION, - MANAGEMENT_MAX, -}; -/* control stats */ -enum il_ctrl_stats { - CONTROL_BACK_REQ = 0, - CONTROL_BACK, - CONTROL_PSPOLL, - CONTROL_RTS, - CONTROL_CTS, - CONTROL_ACK, - CONTROL_CFEND, - CONTROL_CFENDACK, - CONTROL_MAX, -}; - -struct traffic_stats { -#ifdef CONFIG_IWLEGACY_DEBUGFS - u32 mgmt[MANAGEMENT_MAX]; - u32 ctrl[CONTROL_MAX]; - u32 data_cnt; - u64 data_bytes; -#endif -}; - -/* - * host interrupt timeout value - * used with setting interrupt coalescing timer - * the CSR_INT_COALESCING is an 8 bit register in 32-usec unit - * - * default interrupt coalescing timer is 64 x 32 = 2048 usecs - * default interrupt coalescing calibration timer is 16 x 32 = 512 usecs - */ -#define IL_HOST_INT_TIMEOUT_MAX (0xFF) -#define IL_HOST_INT_TIMEOUT_DEF (0x40) -#define IL_HOST_INT_TIMEOUT_MIN (0x0) -#define IL_HOST_INT_CALIB_TIMEOUT_MAX (0xFF) -#define IL_HOST_INT_CALIB_TIMEOUT_DEF (0x10) -#define IL_HOST_INT_CALIB_TIMEOUT_MIN (0x0) - -#define IL_DELAY_NEXT_FORCE_FW_RELOAD (HZ*5) - -/* TX queue watchdog timeouts in mSecs */ -#define IL_DEF_WD_TIMEOUT (2000) -#define IL_LONG_WD_TIMEOUT (10000) -#define IL_MAX_WD_TIMEOUT (120000) - -struct il_force_reset { - int reset_request_count; - int reset_success_count; - int reset_reject_count; - unsigned long reset_duration; - unsigned long last_force_reset_jiffies; -}; - -/* extend beacon time format bit shifting */ -/* - * for _3945 devices - * bits 31:24 - extended - * bits 23:0 - interval - */ -#define IL3945_EXT_BEACON_TIME_POS 24 -/* - * for _4965 devices - * bits 31:22 - extended - * bits 21:0 - interval - */ -#define IL4965_EXT_BEACON_TIME_POS 22 - -struct il_rxon_context { - struct ieee80211_vif *vif; -}; - -struct il_power_mgr { - struct il_powertable_cmd sleep_cmd; - struct il_powertable_cmd sleep_cmd_next; - int debug_sleep_level_override; - bool pci_pm; - bool ps_disabled; -}; - -struct il_priv { - struct ieee80211_hw *hw; - struct ieee80211_channel *ieee_channels; - struct ieee80211_rate *ieee_rates; - - struct il_cfg *cfg; - const struct il_ops *ops; -#ifdef CONFIG_IWLEGACY_DEBUGFS - const struct il_debugfs_ops *debugfs_ops; -#endif - - /* temporary frame storage list */ - struct list_head free_frames; - int frames_count; - - enum ieee80211_band band; - int alloc_rxb_page; - - void (*handlers[IL_CN_MAX]) (struct il_priv *il, - struct il_rx_buf *rxb); - - struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS]; - - /* spectrum measurement report caching */ - struct il_spectrum_notification measure_report; - u8 measurement_status; - - /* ucode beacon time */ - u32 ucode_beacon_time; - int missed_beacon_threshold; - - /* track IBSS manager (last beacon) status */ - u32 ibss_manager; - - /* force reset */ - struct il_force_reset force_reset; - - /* we allocate array of il_channel_info for NIC's valid channels. - * Access via channel # using indirect idx array */ - struct il_channel_info *channel_info; /* channel info array */ - u8 channel_count; /* # of channels */ - - /* thermal calibration */ - s32 temperature; /* degrees Kelvin */ - s32 last_temperature; - - /* Scan related variables */ - unsigned long scan_start; - unsigned long scan_start_tsf; - void *scan_cmd; - enum ieee80211_band scan_band; - struct cfg80211_scan_request *scan_request; - struct ieee80211_vif *scan_vif; - u8 scan_tx_ant[IEEE80211_NUM_BANDS]; - u8 mgmt_tx_ant; - - /* spinlock */ - spinlock_t lock; /* protect general shared data */ - spinlock_t hcmd_lock; /* protect hcmd */ - spinlock_t reg_lock; /* protect hw register access */ - struct mutex mutex; - - /* basic pci-network driver stuff */ - struct pci_dev *pci_dev; - - /* pci hardware address support */ - void __iomem *hw_base; - u32 hw_rev; - u32 hw_wa_rev; - u8 rev_id; - - /* command queue number */ - u8 cmd_queue; - - /* max number of station keys */ - u8 sta_key_max_num; - - /* EEPROM MAC addresses */ - struct mac_address addresses[1]; - - /* uCode images, save to reload in case of failure */ - int fw_idx; /* firmware we're trying to load */ - u32 ucode_ver; /* version of ucode, copy of - il_ucode.ver */ - struct fw_desc ucode_code; /* runtime inst */ - struct fw_desc ucode_data; /* runtime data original */ - struct fw_desc ucode_data_backup; /* runtime data save/restore */ - struct fw_desc ucode_init; /* initialization inst */ - struct fw_desc ucode_init_data; /* initialization data */ - struct fw_desc ucode_boot; /* bootstrap inst */ - enum ucode_type ucode_type; - u8 ucode_write_complete; /* the image write is complete */ - char firmware_name[25]; - - struct ieee80211_vif *vif; - - struct il_qos_info qos_data; - - struct { - bool enabled; - bool is_40mhz; - bool non_gf_sta_present; - u8 protection; - u8 extension_chan_offset; - } ht; - - /* - * We declare this const so it can only be - * changed via explicit cast within the - * routines that actually update the physical - * hardware. - */ - const struct il_rxon_cmd active; - struct il_rxon_cmd staging; - - struct il_rxon_time_cmd timing; - - __le16 switch_channel; - - /* 1st responses from initialize and runtime uCode images. - * _4965's initialize alive response contains some calibration data. */ - struct il_init_alive_resp card_alive_init; - struct il_alive_resp card_alive; - - u16 active_rate; - - u8 start_calib; - struct il_sensitivity_data sensitivity_data; - struct il_chain_noise_data chain_noise_data; - __le16 sensitivity_tbl[HD_TBL_SIZE]; - - struct il_ht_config current_ht_config; - - /* Rate scaling data */ - u8 retry_rate; - - wait_queue_head_t wait_command_queue; - - int activity_timer_active; - - /* Rx and Tx DMA processing queues */ - struct il_rx_queue rxq; - struct il_tx_queue *txq; - unsigned long txq_ctx_active_msk; - struct il_dma_ptr kw; /* keep warm address */ - struct il_dma_ptr scd_bc_tbls; - - u32 scd_base_addr; /* scheduler sram base address */ - - unsigned long status; - - /* counts mgmt, ctl, and data packets */ - struct traffic_stats tx_stats; - struct traffic_stats rx_stats; - - /* counts interrupts */ - struct isr_stats isr_stats; - - struct il_power_mgr power_data; - - /* context information */ - u8 bssid[ETH_ALEN]; /* used only on 3945 but filled by core */ - - /* station table variables */ - - /* Note: if lock and sta_lock are needed, lock must be acquired first */ - spinlock_t sta_lock; - int num_stations; - struct il_station_entry stations[IL_STATION_COUNT]; - unsigned long ucode_key_table; - - /* queue refcounts */ -#define IL_MAX_HW_QUEUES 32 - unsigned long queue_stopped[BITS_TO_LONGS(IL_MAX_HW_QUEUES)]; -#define IL_STOP_REASON_PASSIVE 0 - unsigned long stop_reason; - /* for each AC */ - atomic_t queue_stop_count[4]; - - /* Indication if ieee80211_ops->open has been called */ - u8 is_open; - - u8 mac80211_registered; - - /* eeprom -- this is in the card's little endian byte order */ - u8 *eeprom; - struct il_eeprom_calib_info *calib_info; - - enum nl80211_iftype iw_mode; - - /* Last Rx'd beacon timestamp */ - u64 timestamp; - - union { -#if defined(CONFIG_IWL3945) || defined(CONFIG_IWL3945_MODULE) - struct { - void *shared_virt; - dma_addr_t shared_phys; - - struct delayed_work thermal_periodic; - struct delayed_work rfkill_poll; - - struct il3945_notif_stats stats; -#ifdef CONFIG_IWLEGACY_DEBUGFS - struct il3945_notif_stats accum_stats; - struct il3945_notif_stats delta_stats; - struct il3945_notif_stats max_delta; -#endif - - u32 sta_supp_rates; - int last_rx_rssi; /* From Rx packet stats */ - - /* Rx'd packet timing information */ - u32 last_beacon_time; - u64 last_tsf; - - /* - * each calibration channel group in the - * EEPROM has a derived clip setting for - * each rate. - */ - const struct il3945_clip_group clip_groups[5]; - - } _3945; -#endif -#if defined(CONFIG_IWL4965) || defined(CONFIG_IWL4965_MODULE) - struct { - struct il_rx_phy_res last_phy_res; - bool last_phy_res_valid; - u32 ampdu_ref; - - struct completion firmware_loading_complete; - - /* - * chain noise reset and gain commands are the - * two extra calibration commands follows the standard - * phy calibration commands - */ - u8 phy_calib_chain_noise_reset_cmd; - u8 phy_calib_chain_noise_gain_cmd; - - u8 key_mapping_keys; - struct il_wep_key wep_keys[WEP_KEYS_MAX]; - - struct il_notif_stats stats; -#ifdef CONFIG_IWLEGACY_DEBUGFS - struct il_notif_stats accum_stats; - struct il_notif_stats delta_stats; - struct il_notif_stats max_delta; -#endif - - } _4965; -#endif - }; - - struct il_hw_params hw_params; - - u32 inta_mask; - - struct workqueue_struct *workqueue; - - struct work_struct restart; - struct work_struct scan_completed; - struct work_struct rx_replenish; - struct work_struct abort_scan; - - bool beacon_enabled; - struct sk_buff *beacon_skb; - - struct work_struct tx_flush; - - struct tasklet_struct irq_tasklet; - - struct delayed_work init_alive_start; - struct delayed_work alive_start; - struct delayed_work scan_check; - - /* TX Power */ - s8 tx_power_user_lmt; - s8 tx_power_device_lmt; - s8 tx_power_next; - -#ifdef CONFIG_IWLEGACY_DEBUG - /* debugging info */ - u32 debug_level; /* per device debugging will override global - il_debug_level if set */ -#endif /* CONFIG_IWLEGACY_DEBUG */ -#ifdef CONFIG_IWLEGACY_DEBUGFS - /* debugfs */ - u16 tx_traffic_idx; - u16 rx_traffic_idx; - u8 *tx_traffic; - u8 *rx_traffic; - struct dentry *debugfs_dir; - u32 dbgfs_sram_offset, dbgfs_sram_len; - bool disable_ht40; -#endif /* CONFIG_IWLEGACY_DEBUGFS */ - - struct work_struct txpower_work; - bool disable_sens_cal; - bool disable_chain_noise_cal; - bool disable_tx_power_cal; - struct work_struct run_time_calib_work; - struct timer_list stats_periodic; - struct timer_list watchdog; - bool hw_ready; - - struct led_classdev led; - unsigned long blink_on, blink_off; - bool led_registered; -}; /*il_priv */ - -static inline void -il_txq_ctx_activate(struct il_priv *il, int txq_id) -{ - set_bit(txq_id, &il->txq_ctx_active_msk); -} - -static inline void -il_txq_ctx_deactivate(struct il_priv *il, int txq_id) -{ - clear_bit(txq_id, &il->txq_ctx_active_msk); -} - -static inline int -il_is_associated(struct il_priv *il) -{ - return (il->active.filter_flags & RXON_FILTER_ASSOC_MSK) ? 1 : 0; -} - -static inline int -il_is_any_associated(struct il_priv *il) -{ - return il_is_associated(il); -} - -static inline int -il_is_channel_valid(const struct il_channel_info *ch_info) -{ - if (ch_info == NULL) - return 0; - return (ch_info->flags & EEPROM_CHANNEL_VALID) ? 1 : 0; -} - -static inline int -il_is_channel_radar(const struct il_channel_info *ch_info) -{ - return (ch_info->flags & EEPROM_CHANNEL_RADAR) ? 1 : 0; -} - -static inline u8 -il_is_channel_a_band(const struct il_channel_info *ch_info) -{ - return ch_info->band == IEEE80211_BAND_5GHZ; -} - -static inline int -il_is_channel_passive(const struct il_channel_info *ch) -{ - return (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) ? 1 : 0; -} - -static inline int -il_is_channel_ibss(const struct il_channel_info *ch) -{ - return (ch->flags & EEPROM_CHANNEL_IBSS) ? 1 : 0; -} - -static inline void -__il_free_pages(struct il_priv *il, struct page *page) -{ - __free_pages(page, il->hw_params.rx_page_order); - il->alloc_rxb_page--; -} - -static inline void -il_free_pages(struct il_priv *il, unsigned long page) -{ - free_pages(page, il->hw_params.rx_page_order); - il->alloc_rxb_page--; -} - -#define IWLWIFI_VERSION "in-tree:" -#define DRV_COPYRIGHT "Copyright(c) 2003-2011 Intel Corporation" -#define DRV_AUTHOR "<ilw@linux.intel.com>" - -#define IL_PCI_DEVICE(dev, subdev, cfg) \ - .vendor = PCI_VENDOR_ID_INTEL, .device = (dev), \ - .subvendor = PCI_ANY_ID, .subdevice = (subdev), \ - .driver_data = (kernel_ulong_t)&(cfg) - -#define TIME_UNIT 1024 - -#define IL_SKU_G 0x1 -#define IL_SKU_A 0x2 -#define IL_SKU_N 0x8 - -#define IL_CMD(x) case x: return #x - -/* Size of one Rx buffer in host DRAM */ -#define IL_RX_BUF_SIZE_3K (3 * 1000) /* 3945 only */ -#define IL_RX_BUF_SIZE_4K (4 * 1024) -#define IL_RX_BUF_SIZE_8K (8 * 1024) - -#ifdef CONFIG_IWLEGACY_DEBUGFS -struct il_debugfs_ops { - ssize_t(*rx_stats_read) (struct file *file, char __user *user_buf, - size_t count, loff_t *ppos); - ssize_t(*tx_stats_read) (struct file *file, char __user *user_buf, - size_t count, loff_t *ppos); - ssize_t(*general_stats_read) (struct file *file, - char __user *user_buf, size_t count, - loff_t *ppos); -}; -#endif - -struct il_ops { - /* Handling TX */ - void (*txq_update_byte_cnt_tbl) (struct il_priv *il, - struct il_tx_queue *txq, - u16 byte_cnt); - int (*txq_attach_buf_to_tfd) (struct il_priv *il, - struct il_tx_queue *txq, dma_addr_t addr, - u16 len, u8 reset, u8 pad); - void (*txq_free_tfd) (struct il_priv *il, struct il_tx_queue *txq); - int (*txq_init) (struct il_priv *il, struct il_tx_queue *txq); - /* alive notification after init uCode load */ - void (*init_alive_start) (struct il_priv *il); - /* check validity of rtc data address */ - int (*is_valid_rtc_data_addr) (u32 addr); - /* 1st ucode load */ - int (*load_ucode) (struct il_priv *il); - - void (*dump_nic_error_log) (struct il_priv *il); - int (*dump_fh) (struct il_priv *il, char **buf, bool display); - int (*set_channel_switch) (struct il_priv *il, - struct ieee80211_channel_switch *ch_switch); - /* power management */ - int (*apm_init) (struct il_priv *il); - - /* tx power */ - int (*send_tx_power) (struct il_priv *il); - void (*update_chain_flags) (struct il_priv *il); - - /* eeprom operations */ - int (*eeprom_acquire_semaphore) (struct il_priv *il); - void (*eeprom_release_semaphore) (struct il_priv *il); - - int (*rxon_assoc) (struct il_priv *il); - int (*commit_rxon) (struct il_priv *il); - void (*set_rxon_chain) (struct il_priv *il); - - u16(*get_hcmd_size) (u8 cmd_id, u16 len); - u16(*build_addsta_hcmd) (const struct il_addsta_cmd *cmd, u8 *data); - - int (*request_scan) (struct il_priv *il, struct ieee80211_vif *vif); - void (*post_scan) (struct il_priv *il); - void (*post_associate) (struct il_priv *il); - void (*config_ap) (struct il_priv *il); - /* station management */ - int (*update_bcast_stations) (struct il_priv *il); - int (*manage_ibss_station) (struct il_priv *il, - struct ieee80211_vif *vif, bool add); - - int (*send_led_cmd) (struct il_priv *il, struct il_led_cmd *led_cmd); -}; - -struct il_mod_params { - int sw_crypto; /* def: 0 = using hardware encryption */ - int disable_hw_scan; /* def: 0 = use h/w scan */ - int num_of_queues; /* def: HW dependent */ - int disable_11n; /* def: 0 = 11n capabilities enabled */ - int amsdu_size_8K; /* def: 0 = disable 8K amsdu size */ - int antenna; /* def: 0 = both antennas (use diversity) */ - int restart_fw; /* def: 1 = restart firmware */ -}; - -#define IL_LED_SOLID 11 -#define IL_DEF_LED_INTRVL cpu_to_le32(1000) - -#define IL_LED_ACTIVITY (0<<1) -#define IL_LED_LINK (1<<1) - -/* - * LED mode - * IL_LED_DEFAULT: use device default - * IL_LED_RF_STATE: turn LED on/off based on RF state - * LED ON = RF ON - * LED OFF = RF OFF - * IL_LED_BLINK: adjust led blink rate based on blink table - */ -enum il_led_mode { - IL_LED_DEFAULT, - IL_LED_RF_STATE, - IL_LED_BLINK, -}; - -void il_leds_init(struct il_priv *il); -void il_leds_exit(struct il_priv *il); - -/** - * struct il_cfg - * @fw_name_pre: Firmware filename prefix. The api version and extension - * (.ucode) will be added to filename before loading from disk. The - * filename is constructed as fw_name_pre<api>.ucode. - * @ucode_api_max: Highest version of uCode API supported by driver. - * @ucode_api_min: Lowest version of uCode API supported by driver. - * @scan_antennas: available antenna for scan operation - * @led_mode: 0=blinking, 1=On(RF On)/Off(RF Off) - * - * We enable the driver to be backward compatible wrt API version. The - * driver specifies which APIs it supports (with @ucode_api_max being the - * highest and @ucode_api_min the lowest). Firmware will only be loaded if - * it has a supported API version. The firmware's API version will be - * stored in @il_priv, enabling the driver to make runtime changes based - * on firmware version used. - * - * For example, - * if (IL_UCODE_API(il->ucode_ver) >= 2) { - * Driver interacts with Firmware API version >= 2. - * } else { - * Driver interacts with Firmware API version 1. - * } - * - * The ideal usage of this infrastructure is to treat a new ucode API - * release as a new hardware revision. That is, through utilizing the - * il_hcmd_utils_ops etc. we accommodate different command structures - * and flows between hardware versions as well as their API - * versions. - * - */ -struct il_cfg { - /* params specific to an individual device within a device family */ - const char *name; - const char *fw_name_pre; - const unsigned int ucode_api_max; - const unsigned int ucode_api_min; - u8 valid_tx_ant; - u8 valid_rx_ant; - unsigned int sku; - u16 eeprom_ver; - u16 eeprom_calib_ver; - /* module based parameters which can be set from modprobe cmd */ - const struct il_mod_params *mod_params; - /* params not likely to change within a device family */ - struct il_base_params *base_params; - /* params likely to change within a device family */ - u8 scan_rx_antennas[IEEE80211_NUM_BANDS]; - enum il_led_mode led_mode; - - int eeprom_size; - int num_of_queues; /* def: HW dependent */ - int num_of_ampdu_queues; /* def: HW dependent */ - /* for il_apm_init() */ - u32 pll_cfg_val; - bool set_l0s; - bool use_bsm; - - u16 led_compensation; - int chain_noise_num_beacons; - unsigned int wd_timeout; - bool temperature_kelvin; - const bool ucode_tracing; - const bool sensitivity_calib_by_driver; - const bool chain_noise_calib_by_driver; - - const u32 regulatory_bands[7]; -}; - -/*************************** - * L i b * - ***************************/ - -int il_mac_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - u16 queue, const struct ieee80211_tx_queue_params *params); -int il_mac_tx_last_beacon(struct ieee80211_hw *hw); - -void il_set_rxon_hwcrypto(struct il_priv *il, int hw_decrypt); -int il_check_rxon_cmd(struct il_priv *il); -int il_full_rxon_required(struct il_priv *il); -int il_set_rxon_channel(struct il_priv *il, struct ieee80211_channel *ch); -void il_set_flags_for_band(struct il_priv *il, enum ieee80211_band band, - struct ieee80211_vif *vif); -u8 il_get_single_channel_number(struct il_priv *il, enum ieee80211_band band); -void il_set_rxon_ht(struct il_priv *il, struct il_ht_config *ht_conf); -bool il_is_ht40_tx_allowed(struct il_priv *il, - struct ieee80211_sta_ht_cap *ht_cap); -void il_connection_init_rx_config(struct il_priv *il); -void il_set_rate(struct il_priv *il); -int il_set_decrypted_flag(struct il_priv *il, struct ieee80211_hdr *hdr, - u32 decrypt_res, struct ieee80211_rx_status *stats); -void il_irq_handle_error(struct il_priv *il); -int il_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif); -void il_mac_remove_interface(struct ieee80211_hw *hw, - struct ieee80211_vif *vif); -int il_mac_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - enum nl80211_iftype newtype, bool newp2p); -void il_mac_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - u32 queues, bool drop); -int il_alloc_txq_mem(struct il_priv *il); -void il_free_txq_mem(struct il_priv *il); - -#ifdef CONFIG_IWLEGACY_DEBUGFS -void il_update_stats(struct il_priv *il, bool is_tx, __le16 fc, u16 len); -#else -static inline void -il_update_stats(struct il_priv *il, bool is_tx, __le16 fc, u16 len) -{ -} -#endif - -/***************************************************** - * Handlers - ***************************************************/ -void il_hdl_pm_sleep(struct il_priv *il, struct il_rx_buf *rxb); -void il_hdl_pm_debug_stats(struct il_priv *il, struct il_rx_buf *rxb); -void il_hdl_error(struct il_priv *il, struct il_rx_buf *rxb); -void il_hdl_csa(struct il_priv *il, struct il_rx_buf *rxb); - -/***************************************************** -* RX -******************************************************/ -void il_cmd_queue_unmap(struct il_priv *il); -void il_cmd_queue_free(struct il_priv *il); -int il_rx_queue_alloc(struct il_priv *il); -void il_rx_queue_update_write_ptr(struct il_priv *il, struct il_rx_queue *q); -int il_rx_queue_space(const struct il_rx_queue *q); -void il_tx_cmd_complete(struct il_priv *il, struct il_rx_buf *rxb); - -void il_hdl_spectrum_measurement(struct il_priv *il, struct il_rx_buf *rxb); -void il_recover_from_stats(struct il_priv *il, struct il_rx_pkt *pkt); -void il_chswitch_done(struct il_priv *il, bool is_success); - -/***************************************************** -* TX -******************************************************/ -void il_txq_update_write_ptr(struct il_priv *il, struct il_tx_queue *txq); -int il_tx_queue_init(struct il_priv *il, u32 txq_id); -void il_tx_queue_reset(struct il_priv *il, u32 txq_id); -void il_tx_queue_unmap(struct il_priv *il, int txq_id); -void il_tx_queue_free(struct il_priv *il, int txq_id); -void il_setup_watchdog(struct il_priv *il); -/***************************************************** - * TX power - ****************************************************/ -int il_set_tx_power(struct il_priv *il, s8 tx_power, bool force); - -/******************************************************************************* - * Rate - ******************************************************************************/ - -u8 il_get_lowest_plcp(struct il_priv *il); - -/******************************************************************************* - * Scanning - ******************************************************************************/ -void il_init_scan_params(struct il_priv *il); -int il_scan_cancel(struct il_priv *il); -int il_scan_cancel_timeout(struct il_priv *il, unsigned long ms); -void il_force_scan_end(struct il_priv *il); -int il_mac_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - struct ieee80211_scan_request *hw_req); -void il_internal_short_hw_scan(struct il_priv *il); -int il_force_reset(struct il_priv *il, bool external); -u16 il_fill_probe_req(struct il_priv *il, struct ieee80211_mgmt *frame, - const u8 *ta, const u8 *ie, int ie_len, int left); -void il_setup_rx_scan_handlers(struct il_priv *il); -u16 il_get_active_dwell_time(struct il_priv *il, enum ieee80211_band band, - u8 n_probes); -u16 il_get_passive_dwell_time(struct il_priv *il, enum ieee80211_band band, - struct ieee80211_vif *vif); -void il_setup_scan_deferred_work(struct il_priv *il); -void il_cancel_scan_deferred_work(struct il_priv *il); - -/* For faster active scanning, scan will move to the next channel if fewer than - * PLCP_QUIET_THRESH packets are heard on this channel within - * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell - * time if it's a quiet channel (nothing responded to our probe, and there's - * no other traffic). - * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */ -#define IL_ACTIVE_QUIET_TIME cpu_to_le16(10) /* msec */ -#define IL_PLCP_QUIET_THRESH cpu_to_le16(1) /* packets */ - -#define IL_SCAN_CHECK_WATCHDOG (HZ * 7) - -/***************************************************** - * S e n d i n g H o s t C o m m a n d s * - *****************************************************/ - -const char *il_get_cmd_string(u8 cmd); -int __must_check il_send_cmd_sync(struct il_priv *il, struct il_host_cmd *cmd); -int il_send_cmd(struct il_priv *il, struct il_host_cmd *cmd); -int __must_check il_send_cmd_pdu(struct il_priv *il, u8 id, u16 len, - const void *data); -int il_send_cmd_pdu_async(struct il_priv *il, u8 id, u16 len, const void *data, - void (*callback) (struct il_priv *il, - struct il_device_cmd *cmd, - struct il_rx_pkt *pkt)); - -int il_enqueue_hcmd(struct il_priv *il, struct il_host_cmd *cmd); - -/***************************************************** - * PCI * - *****************************************************/ - -void il_bg_watchdog(unsigned long data); -u32 il_usecs_to_beacons(struct il_priv *il, u32 usec, u32 beacon_interval); -__le32 il_add_beacon_time(struct il_priv *il, u32 base, u32 addon, - u32 beacon_interval); - -#ifdef CONFIG_PM_SLEEP -extern const struct dev_pm_ops il_pm_ops; - -#define IL_LEGACY_PM_OPS (&il_pm_ops) - -#else /* !CONFIG_PM_SLEEP */ - -#define IL_LEGACY_PM_OPS NULL - -#endif /* !CONFIG_PM_SLEEP */ - -/***************************************************** -* Error Handling Debugging -******************************************************/ -void il4965_dump_nic_error_log(struct il_priv *il); -#ifdef CONFIG_IWLEGACY_DEBUG -void il_print_rx_config_cmd(struct il_priv *il); -#else -static inline void -il_print_rx_config_cmd(struct il_priv *il) -{ -} -#endif - -void il_clear_isr_stats(struct il_priv *il); - -/***************************************************** -* GEOS -******************************************************/ -int il_init_geos(struct il_priv *il); -void il_free_geos(struct il_priv *il); - -/*************** DRIVER STATUS FUNCTIONS *****/ - -#define S_HCMD_ACTIVE 0 /* host command in progress */ -/* 1 is unused (used to be S_HCMD_SYNC_ACTIVE) */ -#define S_INT_ENABLED 2 -#define S_RFKILL 3 -#define S_CT_KILL 4 -#define S_INIT 5 -#define S_ALIVE 6 -#define S_READY 7 -#define S_TEMPERATURE 8 -#define S_GEO_CONFIGURED 9 -#define S_EXIT_PENDING 10 -#define S_STATS 12 -#define S_SCANNING 13 -#define S_SCAN_ABORTING 14 -#define S_SCAN_HW 15 -#define S_POWER_PMI 16 -#define S_FW_ERROR 17 -#define S_CHANNEL_SWITCH_PENDING 18 - -static inline int -il_is_ready(struct il_priv *il) -{ - /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are - * set but EXIT_PENDING is not */ - return test_bit(S_READY, &il->status) && - test_bit(S_GEO_CONFIGURED, &il->status) && - !test_bit(S_EXIT_PENDING, &il->status); -} - -static inline int -il_is_alive(struct il_priv *il) -{ - return test_bit(S_ALIVE, &il->status); -} - -static inline int -il_is_init(struct il_priv *il) -{ - return test_bit(S_INIT, &il->status); -} - -static inline int -il_is_rfkill(struct il_priv *il) -{ - return test_bit(S_RFKILL, &il->status); -} - -static inline int -il_is_ctkill(struct il_priv *il) -{ - return test_bit(S_CT_KILL, &il->status); -} - -static inline int -il_is_ready_rf(struct il_priv *il) -{ - - if (il_is_rfkill(il)) - return 0; - - return il_is_ready(il); -} - -void il_send_bt_config(struct il_priv *il); -int il_send_stats_request(struct il_priv *il, u8 flags, bool clear); -void il_apm_stop(struct il_priv *il); -void _il_apm_stop(struct il_priv *il); - -int il_apm_init(struct il_priv *il); - -int il_send_rxon_timing(struct il_priv *il); - -static inline int -il_send_rxon_assoc(struct il_priv *il) -{ - return il->ops->rxon_assoc(il); -} - -static inline int -il_commit_rxon(struct il_priv *il) -{ - return il->ops->commit_rxon(il); -} - -static inline const struct ieee80211_supported_band * -il_get_hw_mode(struct il_priv *il, enum ieee80211_band band) -{ - return il->hw->wiphy->bands[band]; -} - -/* mac80211 handlers */ -int il_mac_config(struct ieee80211_hw *hw, u32 changed); -void il_mac_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif); -void il_mac_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - struct ieee80211_bss_conf *bss_conf, u32 changes); -void il_tx_cmd_protection(struct il_priv *il, struct ieee80211_tx_info *info, - __le16 fc, __le32 *tx_flags); - -irqreturn_t il_isr(int irq, void *data); - -void il_set_bit(struct il_priv *p, u32 r, u32 m); -void il_clear_bit(struct il_priv *p, u32 r, u32 m); -bool _il_grab_nic_access(struct il_priv *il); -int _il_poll_bit(struct il_priv *il, u32 addr, u32 bits, u32 mask, int timeout); -int il_poll_bit(struct il_priv *il, u32 addr, u32 mask, int timeout); -u32 il_rd_prph(struct il_priv *il, u32 reg); -void il_wr_prph(struct il_priv *il, u32 addr, u32 val); -u32 il_read_targ_mem(struct il_priv *il, u32 addr); -void il_write_targ_mem(struct il_priv *il, u32 addr, u32 val); - -static inline bool il_need_reclaim(struct il_priv *il, struct il_rx_pkt *pkt) -{ - /* Reclaim a command buffer only if this packet is a response - * to a (driver-originated) command. If the packet (e.g. Rx frame) - * originated from uCode, there is no command buffer to reclaim. - * Ucode should set SEQ_RX_FRAME bit if ucode-originated, but - * apparently a few don't get set; catch them here. - */ - return !(pkt->hdr.sequence & SEQ_RX_FRAME) && - pkt->hdr.cmd != N_STATS && pkt->hdr.cmd != C_TX && - pkt->hdr.cmd != N_RX_PHY && pkt->hdr.cmd != N_RX && - pkt->hdr.cmd != N_RX_MPDU && pkt->hdr.cmd != N_COMPRESSED_BA; -} - -static inline void -_il_write8(struct il_priv *il, u32 ofs, u8 val) -{ - writeb(val, il->hw_base + ofs); -} -#define il_write8(il, ofs, val) _il_write8(il, ofs, val) - -static inline void -_il_wr(struct il_priv *il, u32 ofs, u32 val) -{ - writel(val, il->hw_base + ofs); -} - -static inline u32 -_il_rd(struct il_priv *il, u32 ofs) -{ - return readl(il->hw_base + ofs); -} - -static inline void -_il_clear_bit(struct il_priv *il, u32 reg, u32 mask) -{ - _il_wr(il, reg, _il_rd(il, reg) & ~mask); -} - -static inline void -_il_set_bit(struct il_priv *il, u32 reg, u32 mask) -{ - _il_wr(il, reg, _il_rd(il, reg) | mask); -} - -static inline void -_il_release_nic_access(struct il_priv *il) -{ - _il_clear_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); - /* - * In above we are reading CSR_GP_CNTRL register, what will flush any - * previous writes, but still want write, which clear MAC_ACCESS_REQ - * bit, be performed on PCI bus before any other writes scheduled on - * different CPUs (after we drop reg_lock). - */ - mmiowb(); -} - -static inline u32 -il_rd(struct il_priv *il, u32 reg) -{ - u32 value; - unsigned long reg_flags; - - spin_lock_irqsave(&il->reg_lock, reg_flags); - _il_grab_nic_access(il); - value = _il_rd(il, reg); - _il_release_nic_access(il); - spin_unlock_irqrestore(&il->reg_lock, reg_flags); - return value; -} - -static inline void -il_wr(struct il_priv *il, u32 reg, u32 value) -{ - unsigned long reg_flags; - - spin_lock_irqsave(&il->reg_lock, reg_flags); - if (likely(_il_grab_nic_access(il))) { - _il_wr(il, reg, value); - _il_release_nic_access(il); - } - spin_unlock_irqrestore(&il->reg_lock, reg_flags); -} - -static inline u32 -_il_rd_prph(struct il_priv *il, u32 reg) -{ - _il_wr(il, HBUS_TARG_PRPH_RADDR, reg | (3 << 24)); - return _il_rd(il, HBUS_TARG_PRPH_RDAT); -} - -static inline void -_il_wr_prph(struct il_priv *il, u32 addr, u32 val) -{ - _il_wr(il, HBUS_TARG_PRPH_WADDR, ((addr & 0x0000FFFF) | (3 << 24))); - _il_wr(il, HBUS_TARG_PRPH_WDAT, val); -} - -static inline void -il_set_bits_prph(struct il_priv *il, u32 reg, u32 mask) -{ - unsigned long reg_flags; - - spin_lock_irqsave(&il->reg_lock, reg_flags); - if (likely(_il_grab_nic_access(il))) { - _il_wr_prph(il, reg, (_il_rd_prph(il, reg) | mask)); - _il_release_nic_access(il); - } - spin_unlock_irqrestore(&il->reg_lock, reg_flags); -} - -static inline void -il_set_bits_mask_prph(struct il_priv *il, u32 reg, u32 bits, u32 mask) -{ - unsigned long reg_flags; - - spin_lock_irqsave(&il->reg_lock, reg_flags); - if (likely(_il_grab_nic_access(il))) { - _il_wr_prph(il, reg, ((_il_rd_prph(il, reg) & mask) | bits)); - _il_release_nic_access(il); - } - spin_unlock_irqrestore(&il->reg_lock, reg_flags); -} - -static inline void -il_clear_bits_prph(struct il_priv *il, u32 reg, u32 mask) -{ - unsigned long reg_flags; - u32 val; - - spin_lock_irqsave(&il->reg_lock, reg_flags); - if (likely(_il_grab_nic_access(il))) { - val = _il_rd_prph(il, reg); - _il_wr_prph(il, reg, (val & ~mask)); - _il_release_nic_access(il); - } - spin_unlock_irqrestore(&il->reg_lock, reg_flags); -} - -#define HW_KEY_DYNAMIC 0 -#define HW_KEY_DEFAULT 1 - -#define IL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */ -#define IL_STA_UCODE_ACTIVE BIT(1) /* ucode entry is active */ -#define IL_STA_UCODE_INPROGRESS BIT(2) /* ucode entry is in process of - being activated */ -#define IL_STA_LOCAL BIT(3) /* station state not directed by mac80211; - (this is for the IBSS BSSID stations) */ -#define IL_STA_BCAST BIT(4) /* this station is the special bcast station */ - -void il_restore_stations(struct il_priv *il); -void il_clear_ucode_stations(struct il_priv *il); -void il_dealloc_bcast_stations(struct il_priv *il); -int il_get_free_ucode_key_idx(struct il_priv *il); -int il_send_add_sta(struct il_priv *il, struct il_addsta_cmd *sta, u8 flags); -int il_add_station_common(struct il_priv *il, const u8 *addr, bool is_ap, - struct ieee80211_sta *sta, u8 *sta_id_r); -int il_remove_station(struct il_priv *il, const u8 sta_id, const u8 * addr); -int il_mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - struct ieee80211_sta *sta); - -u8 il_prep_station(struct il_priv *il, const u8 *addr, bool is_ap, - struct ieee80211_sta *sta); - -int il_send_lq_cmd(struct il_priv *il, struct il_link_quality_cmd *lq, - u8 flags, bool init); - -/** - * il_clear_driver_stations - clear knowledge of all stations from driver - * @il: iwl il struct - * - * This is called during il_down() to make sure that in the case - * we're coming there from a hardware restart mac80211 will be - * able to reconfigure stations -- if we're getting there in the - * normal down flow then the stations will already be cleared. - */ -static inline void -il_clear_driver_stations(struct il_priv *il) -{ - unsigned long flags; - - spin_lock_irqsave(&il->sta_lock, flags); - memset(il->stations, 0, sizeof(il->stations)); - il->num_stations = 0; - il->ucode_key_table = 0; - spin_unlock_irqrestore(&il->sta_lock, flags); -} - -static inline int -il_sta_id(struct ieee80211_sta *sta) -{ - if (WARN_ON(!sta)) - return IL_INVALID_STATION; - - return ((struct il_station_priv_common *)sta->drv_priv)->sta_id; -} - -/** - * il_sta_id_or_broadcast - return sta_id or broadcast sta - * @il: iwl il - * @context: the current context - * @sta: mac80211 station - * - * In certain circumstances mac80211 passes a station pointer - * that may be %NULL, for example during TX or key setup. In - * that case, we need to use the broadcast station, so this - * inline wraps that pattern. - */ -static inline int -il_sta_id_or_broadcast(struct il_priv *il, struct ieee80211_sta *sta) -{ - int sta_id; - - if (!sta) - return il->hw_params.bcast_id; - - sta_id = il_sta_id(sta); - - /* - * mac80211 should not be passing a partially - * initialised station! - */ - WARN_ON(sta_id == IL_INVALID_STATION); - - return sta_id; -} - -/** - * il_queue_inc_wrap - increment queue idx, wrap back to beginning - * @idx -- current idx - * @n_bd -- total number of entries in queue (must be power of 2) - */ -static inline int -il_queue_inc_wrap(int idx, int n_bd) -{ - return ++idx & (n_bd - 1); -} - -/** - * il_queue_dec_wrap - decrement queue idx, wrap back to end - * @idx -- current idx - * @n_bd -- total number of entries in queue (must be power of 2) - */ -static inline int -il_queue_dec_wrap(int idx, int n_bd) -{ - return --idx & (n_bd - 1); -} - -/* TODO: Move fw_desc functions to iwl-pci.ko */ -static inline void -il_free_fw_desc(struct pci_dev *pci_dev, struct fw_desc *desc) -{ - if (desc->v_addr) - dma_free_coherent(&pci_dev->dev, desc->len, desc->v_addr, - desc->p_addr); - desc->v_addr = NULL; - desc->len = 0; -} - -static inline int -il_alloc_fw_desc(struct pci_dev *pci_dev, struct fw_desc *desc) -{ - if (!desc->len) { - desc->v_addr = NULL; - return -EINVAL; - } - - desc->v_addr = dma_alloc_coherent(&pci_dev->dev, desc->len, - &desc->p_addr, GFP_KERNEL); - return (desc->v_addr != NULL) ? 0 : -ENOMEM; -} - -/* - * we have 8 bits used like this: - * - * 7 6 5 4 3 2 1 0 - * | | | | | | | | - * | | | | | | +-+-------- AC queue (0-3) - * | | | | | | - * | +-+-+-+-+------------ HW queue ID - * | - * +---------------------- unused - */ -static inline void -il_set_swq_id(struct il_tx_queue *txq, u8 ac, u8 hwq) -{ - BUG_ON(ac > 3); /* only have 2 bits */ - BUG_ON(hwq > 31); /* only use 5 bits */ - - txq->swq_id = (hwq << 2) | ac; -} - -static inline void -_il_wake_queue(struct il_priv *il, u8 ac) -{ - if (atomic_dec_return(&il->queue_stop_count[ac]) <= 0) - ieee80211_wake_queue(il->hw, ac); -} - -static inline void -_il_stop_queue(struct il_priv *il, u8 ac) -{ - if (atomic_inc_return(&il->queue_stop_count[ac]) > 0) - ieee80211_stop_queue(il->hw, ac); -} -static inline void -il_wake_queue(struct il_priv *il, struct il_tx_queue *txq) -{ - u8 queue = txq->swq_id; - u8 ac = queue & 3; - u8 hwq = (queue >> 2) & 0x1f; - - if (test_and_clear_bit(hwq, il->queue_stopped)) - _il_wake_queue(il, ac); -} - -static inline void -il_stop_queue(struct il_priv *il, struct il_tx_queue *txq) -{ - u8 queue = txq->swq_id; - u8 ac = queue & 3; - u8 hwq = (queue >> 2) & 0x1f; - - if (!test_and_set_bit(hwq, il->queue_stopped)) - _il_stop_queue(il, ac); -} - -static inline void -il_wake_queues_by_reason(struct il_priv *il, int reason) -{ - u8 ac; - - if (test_and_clear_bit(reason, &il->stop_reason)) - for (ac = 0; ac < 4; ac++) - _il_wake_queue(il, ac); -} - -static inline void -il_stop_queues_by_reason(struct il_priv *il, int reason) -{ - u8 ac; - - if (!test_and_set_bit(reason, &il->stop_reason)) - for (ac = 0; ac < 4; ac++) - _il_stop_queue(il, ac); -} - -#ifdef ieee80211_stop_queue -#undef ieee80211_stop_queue -#endif - -#define ieee80211_stop_queue DO_NOT_USE_ieee80211_stop_queue - -#ifdef ieee80211_wake_queue -#undef ieee80211_wake_queue -#endif - -#define ieee80211_wake_queue DO_NOT_USE_ieee80211_wake_queue - -static inline void -il_disable_interrupts(struct il_priv *il) -{ - clear_bit(S_INT_ENABLED, &il->status); - - /* disable interrupts from uCode/NIC to host */ - _il_wr(il, CSR_INT_MASK, 0x00000000); - - /* acknowledge/clear/reset any interrupts still pending - * from uCode or flow handler (Rx/Tx DMA) */ - _il_wr(il, CSR_INT, 0xffffffff); - _il_wr(il, CSR_FH_INT_STATUS, 0xffffffff); -} - -static inline void -il_enable_rfkill_int(struct il_priv *il) -{ - _il_wr(il, CSR_INT_MASK, CSR_INT_BIT_RF_KILL); -} - -static inline void -il_enable_interrupts(struct il_priv *il) -{ - set_bit(S_INT_ENABLED, &il->status); - _il_wr(il, CSR_INT_MASK, il->inta_mask); -} - -/** - * il_beacon_time_mask_low - mask of lower 32 bit of beacon time - * @il -- pointer to il_priv data structure - * @tsf_bits -- number of bits need to shift for masking) - */ -static inline u32 -il_beacon_time_mask_low(struct il_priv *il, u16 tsf_bits) -{ - return (1 << tsf_bits) - 1; -} - -/** - * il_beacon_time_mask_high - mask of higher 32 bit of beacon time - * @il -- pointer to il_priv data structure - * @tsf_bits -- number of bits need to shift for masking) - */ -static inline u32 -il_beacon_time_mask_high(struct il_priv *il, u16 tsf_bits) -{ - return ((1 << (32 - tsf_bits)) - 1) << tsf_bits; -} - -/** - * struct il_rb_status - reseve buffer status host memory mapped FH registers - * - * @closed_rb_num [0:11] - Indicates the idx of the RB which was closed - * @closed_fr_num [0:11] - Indicates the idx of the RX Frame which was closed - * @finished_rb_num [0:11] - Indicates the idx of the current RB - * in which the last frame was written to - * @finished_fr_num [0:11] - Indicates the idx of the RX Frame - * which was transferred - */ -struct il_rb_status { - __le16 closed_rb_num; - __le16 closed_fr_num; - __le16 finished_rb_num; - __le16 finished_fr_nam; - __le32 __unused; /* 3945 only */ -} __packed; - -#define TFD_QUEUE_SIZE_MAX 256 -#define TFD_QUEUE_SIZE_BC_DUP 64 -#define TFD_QUEUE_BC_SIZE (TFD_QUEUE_SIZE_MAX + TFD_QUEUE_SIZE_BC_DUP) -#define IL_TX_DMA_MASK DMA_BIT_MASK(36) -#define IL_NUM_OF_TBS 20 - -static inline u8 -il_get_dma_hi_addr(dma_addr_t addr) -{ - return (sizeof(addr) > sizeof(u32) ? (addr >> 16) >> 16 : 0) & 0xF; -} - -/** - * struct il_tfd_tb transmit buffer descriptor within transmit frame descriptor - * - * This structure contains dma address and length of transmission address - * - * @lo: low [31:0] portion of the dma address of TX buffer every even is - * unaligned on 16 bit boundary - * @hi_n_len: 0-3 [35:32] portion of dma - * 4-15 length of the tx buffer - */ -struct il_tfd_tb { - __le32 lo; - __le16 hi_n_len; -} __packed; - -/** - * struct il_tfd - * - * Transmit Frame Descriptor (TFD) - * - * @ __reserved1[3] reserved - * @ num_tbs 0-4 number of active tbs - * 5 reserved - * 6-7 padding (not used) - * @ tbs[20] transmit frame buffer descriptors - * @ __pad padding - * - * Each Tx queue uses a circular buffer of 256 TFDs stored in host DRAM. - * Both driver and device share these circular buffers, each of which must be - * contiguous 256 TFDs x 128 bytes-per-TFD = 32 KBytes - * - * Driver must indicate the physical address of the base of each - * circular buffer via the FH49_MEM_CBBC_QUEUE registers. - * - * Each TFD contains pointer/size information for up to 20 data buffers - * in host DRAM. These buffers collectively contain the (one) frame described - * by the TFD. Each buffer must be a single contiguous block of memory within - * itself, but buffers may be scattered in host DRAM. Each buffer has max size - * of (4K - 4). The concatenates all of a TFD's buffers into a single - * Tx frame, up to 8 KBytes in size. - * - * A maximum of 255 (not 256!) TFDs may be on a queue waiting for Tx. - */ -struct il_tfd { - u8 __reserved1[3]; - u8 num_tbs; - struct il_tfd_tb tbs[IL_NUM_OF_TBS]; - __le32 __pad; -} __packed; -/* PCI registers */ -#define PCI_CFG_RETRY_TIMEOUT 0x041 - -struct il_rate_info { - u8 plcp; /* uCode API: RATE_6M_PLCP, etc. */ - u8 plcp_siso; /* uCode API: RATE_SISO_6M_PLCP, etc. */ - u8 plcp_mimo2; /* uCode API: RATE_MIMO2_6M_PLCP, etc. */ - u8 ieee; /* MAC header: RATE_6M_IEEE, etc. */ - u8 prev_ieee; /* previous rate in IEEE speeds */ - u8 next_ieee; /* next rate in IEEE speeds */ - u8 prev_rs; /* previous rate used in rs algo */ - u8 next_rs; /* next rate used in rs algo */ - u8 prev_rs_tgg; /* previous rate used in TGG rs algo */ - u8 next_rs_tgg; /* next rate used in TGG rs algo */ -}; - -struct il3945_rate_info { - u8 plcp; /* uCode API: RATE_6M_PLCP, etc. */ - u8 ieee; /* MAC header: RATE_6M_IEEE, etc. */ - u8 prev_ieee; /* previous rate in IEEE speeds */ - u8 next_ieee; /* next rate in IEEE speeds */ - u8 prev_rs; /* previous rate used in rs algo */ - u8 next_rs; /* next rate used in rs algo */ - u8 prev_rs_tgg; /* previous rate used in TGG rs algo */ - u8 next_rs_tgg; /* next rate used in TGG rs algo */ - u8 table_rs_idx; /* idx in rate scale table cmd */ - u8 prev_table_rs; /* prev in rate table cmd */ -}; - -/* - * These serve as idxes into - * struct il_rate_info il_rates[RATE_COUNT]; - */ -enum { - RATE_1M_IDX = 0, - RATE_2M_IDX, - RATE_5M_IDX, - RATE_11M_IDX, - RATE_6M_IDX, - RATE_9M_IDX, - RATE_12M_IDX, - RATE_18M_IDX, - RATE_24M_IDX, - RATE_36M_IDX, - RATE_48M_IDX, - RATE_54M_IDX, - RATE_60M_IDX, - RATE_COUNT, - RATE_COUNT_LEGACY = RATE_COUNT - 1, /* Excluding 60M */ - RATE_COUNT_3945 = RATE_COUNT - 1, - RATE_INVM_IDX = RATE_COUNT, - RATE_INVALID = RATE_COUNT, -}; - -enum { - RATE_6M_IDX_TBL = 0, - RATE_9M_IDX_TBL, - RATE_12M_IDX_TBL, - RATE_18M_IDX_TBL, - RATE_24M_IDX_TBL, - RATE_36M_IDX_TBL, - RATE_48M_IDX_TBL, - RATE_54M_IDX_TBL, - RATE_1M_IDX_TBL, - RATE_2M_IDX_TBL, - RATE_5M_IDX_TBL, - RATE_11M_IDX_TBL, - RATE_INVM_IDX_TBL = RATE_INVM_IDX - 1, -}; - -enum { - IL_FIRST_OFDM_RATE = RATE_6M_IDX, - IL39_LAST_OFDM_RATE = RATE_54M_IDX, - IL_LAST_OFDM_RATE = RATE_60M_IDX, - IL_FIRST_CCK_RATE = RATE_1M_IDX, - IL_LAST_CCK_RATE = RATE_11M_IDX, -}; - -/* #define vs. enum to keep from defaulting to 'large integer' */ -#define RATE_6M_MASK (1 << RATE_6M_IDX) -#define RATE_9M_MASK (1 << RATE_9M_IDX) -#define RATE_12M_MASK (1 << RATE_12M_IDX) -#define RATE_18M_MASK (1 << RATE_18M_IDX) -#define RATE_24M_MASK (1 << RATE_24M_IDX) -#define RATE_36M_MASK (1 << RATE_36M_IDX) -#define RATE_48M_MASK (1 << RATE_48M_IDX) -#define RATE_54M_MASK (1 << RATE_54M_IDX) -#define RATE_60M_MASK (1 << RATE_60M_IDX) -#define RATE_1M_MASK (1 << RATE_1M_IDX) -#define RATE_2M_MASK (1 << RATE_2M_IDX) -#define RATE_5M_MASK (1 << RATE_5M_IDX) -#define RATE_11M_MASK (1 << RATE_11M_IDX) - -/* uCode API values for legacy bit rates, both OFDM and CCK */ -enum { - RATE_6M_PLCP = 13, - RATE_9M_PLCP = 15, - RATE_12M_PLCP = 5, - RATE_18M_PLCP = 7, - RATE_24M_PLCP = 9, - RATE_36M_PLCP = 11, - RATE_48M_PLCP = 1, - RATE_54M_PLCP = 3, - RATE_60M_PLCP = 3, /*FIXME:RS:should be removed */ - RATE_1M_PLCP = 10, - RATE_2M_PLCP = 20, - RATE_5M_PLCP = 55, - RATE_11M_PLCP = 110, - /*FIXME:RS:add RATE_LEGACY_INVM_PLCP = 0, */ -}; - -/* uCode API values for OFDM high-throughput (HT) bit rates */ -enum { - RATE_SISO_6M_PLCP = 0, - RATE_SISO_12M_PLCP = 1, - RATE_SISO_18M_PLCP = 2, - RATE_SISO_24M_PLCP = 3, - RATE_SISO_36M_PLCP = 4, - RATE_SISO_48M_PLCP = 5, - RATE_SISO_54M_PLCP = 6, - RATE_SISO_60M_PLCP = 7, - RATE_MIMO2_6M_PLCP = 0x8, - RATE_MIMO2_12M_PLCP = 0x9, - RATE_MIMO2_18M_PLCP = 0xa, - RATE_MIMO2_24M_PLCP = 0xb, - RATE_MIMO2_36M_PLCP = 0xc, - RATE_MIMO2_48M_PLCP = 0xd, - RATE_MIMO2_54M_PLCP = 0xe, - RATE_MIMO2_60M_PLCP = 0xf, - RATE_SISO_INVM_PLCP, - RATE_MIMO2_INVM_PLCP = RATE_SISO_INVM_PLCP, -}; - -/* MAC header values for bit rates */ -enum { - RATE_6M_IEEE = 12, - RATE_9M_IEEE = 18, - RATE_12M_IEEE = 24, - RATE_18M_IEEE = 36, - RATE_24M_IEEE = 48, - RATE_36M_IEEE = 72, - RATE_48M_IEEE = 96, - RATE_54M_IEEE = 108, - RATE_60M_IEEE = 120, - RATE_1M_IEEE = 2, - RATE_2M_IEEE = 4, - RATE_5M_IEEE = 11, - RATE_11M_IEEE = 22, -}; - -#define IL_CCK_BASIC_RATES_MASK \ - (RATE_1M_MASK | \ - RATE_2M_MASK) - -#define IL_CCK_RATES_MASK \ - (IL_CCK_BASIC_RATES_MASK | \ - RATE_5M_MASK | \ - RATE_11M_MASK) - -#define IL_OFDM_BASIC_RATES_MASK \ - (RATE_6M_MASK | \ - RATE_12M_MASK | \ - RATE_24M_MASK) - -#define IL_OFDM_RATES_MASK \ - (IL_OFDM_BASIC_RATES_MASK | \ - RATE_9M_MASK | \ - RATE_18M_MASK | \ - RATE_36M_MASK | \ - RATE_48M_MASK | \ - RATE_54M_MASK) - -#define IL_BASIC_RATES_MASK \ - (IL_OFDM_BASIC_RATES_MASK | \ - IL_CCK_BASIC_RATES_MASK) - -#define RATES_MASK ((1 << RATE_COUNT) - 1) -#define RATES_MASK_3945 ((1 << RATE_COUNT_3945) - 1) - -#define IL_INVALID_VALUE -1 - -#define IL_MIN_RSSI_VAL -100 -#define IL_MAX_RSSI_VAL 0 - -/* These values specify how many Tx frame attempts before - * searching for a new modulation mode */ -#define IL_LEGACY_FAILURE_LIMIT 160 -#define IL_LEGACY_SUCCESS_LIMIT 480 -#define IL_LEGACY_TBL_COUNT 160 - -#define IL_NONE_LEGACY_FAILURE_LIMIT 400 -#define IL_NONE_LEGACY_SUCCESS_LIMIT 4500 -#define IL_NONE_LEGACY_TBL_COUNT 1500 - -/* Success ratio (ACKed / attempted tx frames) values (perfect is 128 * 100) */ -#define IL_RS_GOOD_RATIO 12800 /* 100% */ -#define RATE_SCALE_SWITCH 10880 /* 85% */ -#define RATE_HIGH_TH 10880 /* 85% */ -#define RATE_INCREASE_TH 6400 /* 50% */ -#define RATE_DECREASE_TH 1920 /* 15% */ - -/* possible actions when in legacy mode */ -#define IL_LEGACY_SWITCH_ANTENNA1 0 -#define IL_LEGACY_SWITCH_ANTENNA2 1 -#define IL_LEGACY_SWITCH_SISO 2 -#define IL_LEGACY_SWITCH_MIMO2_AB 3 -#define IL_LEGACY_SWITCH_MIMO2_AC 4 -#define IL_LEGACY_SWITCH_MIMO2_BC 5 - -/* possible actions when in siso mode */ -#define IL_SISO_SWITCH_ANTENNA1 0 -#define IL_SISO_SWITCH_ANTENNA2 1 -#define IL_SISO_SWITCH_MIMO2_AB 2 -#define IL_SISO_SWITCH_MIMO2_AC 3 -#define IL_SISO_SWITCH_MIMO2_BC 4 -#define IL_SISO_SWITCH_GI 5 - -/* possible actions when in mimo mode */ -#define IL_MIMO2_SWITCH_ANTENNA1 0 -#define IL_MIMO2_SWITCH_ANTENNA2 1 -#define IL_MIMO2_SWITCH_SISO_A 2 -#define IL_MIMO2_SWITCH_SISO_B 3 -#define IL_MIMO2_SWITCH_SISO_C 4 -#define IL_MIMO2_SWITCH_GI 5 - -#define IL_MAX_SEARCH IL_MIMO2_SWITCH_GI - -#define IL_ACTION_LIMIT 3 /* # possible actions */ - -#define LQ_SIZE 2 /* 2 mode tables: "Active" and "Search" */ - -/* load per tid defines for A-MPDU activation */ -#define IL_AGG_TPT_THREHOLD 0 -#define IL_AGG_LOAD_THRESHOLD 10 -#define IL_AGG_ALL_TID 0xff -#define TID_QUEUE_CELL_SPACING 50 /*mS */ -#define TID_QUEUE_MAX_SIZE 20 -#define TID_ROUND_VALUE 5 /* mS */ -#define TID_MAX_LOAD_COUNT 8 - -#define TID_MAX_TIME_DIFF ((TID_QUEUE_MAX_SIZE - 1) * TID_QUEUE_CELL_SPACING) -#define TIME_WRAP_AROUND(x, y) (((y) > (x)) ? (y) - (x) : (0-(x)) + (y)) - -extern const struct il_rate_info il_rates[RATE_COUNT]; - -enum il_table_type { - LQ_NONE, - LQ_G, /* legacy types */ - LQ_A, - LQ_SISO, /* high-throughput types */ - LQ_MIMO2, - LQ_MAX, -}; - -#define is_legacy(tbl) ((tbl) == LQ_G || (tbl) == LQ_A) -#define is_siso(tbl) ((tbl) == LQ_SISO) -#define is_mimo2(tbl) ((tbl) == LQ_MIMO2) -#define is_mimo(tbl) (is_mimo2(tbl)) -#define is_Ht(tbl) (is_siso(tbl) || is_mimo(tbl)) -#define is_a_band(tbl) ((tbl) == LQ_A) -#define is_g_and(tbl) ((tbl) == LQ_G) - -#define ANT_NONE 0x0 -#define ANT_A BIT(0) -#define ANT_B BIT(1) -#define ANT_AB (ANT_A | ANT_B) -#define ANT_C BIT(2) -#define ANT_AC (ANT_A | ANT_C) -#define ANT_BC (ANT_B | ANT_C) -#define ANT_ABC (ANT_AB | ANT_C) - -#define IL_MAX_MCS_DISPLAY_SIZE 12 - -struct il_rate_mcs_info { - char mbps[IL_MAX_MCS_DISPLAY_SIZE]; - char mcs[IL_MAX_MCS_DISPLAY_SIZE]; -}; - -/** - * struct il_rate_scale_data -- tx success history for one rate - */ -struct il_rate_scale_data { - u64 data; /* bitmap of successful frames */ - s32 success_counter; /* number of frames successful */ - s32 success_ratio; /* per-cent * 128 */ - s32 counter; /* number of frames attempted */ - s32 average_tpt; /* success ratio * expected throughput */ - unsigned long stamp; -}; - -/** - * struct il_scale_tbl_info -- tx params and success history for all rates - * - * There are two of these in struct il_lq_sta, - * one for "active", and one for "search". - */ -struct il_scale_tbl_info { - enum il_table_type lq_type; - u8 ant_type; - u8 is_SGI; /* 1 = short guard interval */ - u8 is_ht40; /* 1 = 40 MHz channel width */ - u8 is_dup; /* 1 = duplicated data streams */ - u8 action; /* change modulation; IL_[LEGACY/SISO/MIMO]_SWITCH_* */ - u8 max_search; /* maximun number of tables we can search */ - s32 *expected_tpt; /* throughput metrics; expected_tpt_G, etc. */ - u32 current_rate; /* rate_n_flags, uCode API format */ - struct il_rate_scale_data win[RATE_COUNT]; /* rate histories */ -}; - -struct il_traffic_load { - unsigned long time_stamp; /* age of the oldest stats */ - u32 packet_count[TID_QUEUE_MAX_SIZE]; /* packet count in this time - * slice */ - u32 total; /* total num of packets during the - * last TID_MAX_TIME_DIFF */ - u8 queue_count; /* number of queues that has - * been used since the last cleanup */ - u8 head; /* start of the circular buffer */ -}; - -/** - * struct il_lq_sta -- driver's rate scaling ilate structure - * - * Pointer to this gets passed back and forth between driver and mac80211. - */ -struct il_lq_sta { - u8 active_tbl; /* idx of active table, range 0-1 */ - u8 enable_counter; /* indicates HT mode */ - u8 stay_in_tbl; /* 1: disallow, 0: allow search for new mode */ - u8 search_better_tbl; /* 1: currently trying alternate mode */ - s32 last_tpt; - - /* The following determine when to search for a new mode */ - u32 table_count_limit; - u32 max_failure_limit; /* # failed frames before new search */ - u32 max_success_limit; /* # successful frames before new search */ - u32 table_count; - u32 total_failed; /* total failed frames, any/all rates */ - u32 total_success; /* total successful frames, any/all rates */ - u64 flush_timer; /* time staying in mode before new search */ - - u8 action_counter; /* # mode-switch actions tried */ - u8 is_green; - u8 is_dup; - enum ieee80211_band band; - - /* The following are bitmaps of rates; RATE_6M_MASK, etc. */ - u32 supp_rates; - u16 active_legacy_rate; - u16 active_siso_rate; - u16 active_mimo2_rate; - s8 max_rate_idx; /* Max rate set by user */ - u8 missed_rate_counter; - - struct il_link_quality_cmd lq; - struct il_scale_tbl_info lq_info[LQ_SIZE]; /* "active", "search" */ - struct il_traffic_load load[TID_MAX_LOAD_COUNT]; - u8 tx_agg_tid_en; -#ifdef CONFIG_MAC80211_DEBUGFS - struct dentry *rs_sta_dbgfs_scale_table_file; - struct dentry *rs_sta_dbgfs_stats_table_file; - struct dentry *rs_sta_dbgfs_rate_scale_data_file; - struct dentry *rs_sta_dbgfs_tx_agg_tid_en_file; - u32 dbg_fixed_rate; -#endif - struct il_priv *drv; - - /* used to be in sta_info */ - int last_txrate_idx; - /* last tx rate_n_flags */ - u32 last_rate_n_flags; - /* packets destined for this STA are aggregated */ - u8 is_agg; -}; - -/* - * il_station_priv: Driver's ilate station information - * - * When mac80211 creates a station it reserves some space (hw->sta_data_size) - * in the structure for use by driver. This structure is places in that - * space. - * - * The common struct MUST be first because it is shared between - * 3945 and 4965! - */ -struct il_station_priv { - struct il_station_priv_common common; - struct il_lq_sta lq_sta; - atomic_t pending_frames; - bool client; - bool asleep; -}; - -static inline u8 -il4965_num_of_ant(u8 m) -{ - return !!(m & ANT_A) + !!(m & ANT_B) + !!(m & ANT_C); -} - -static inline u8 -il4965_first_antenna(u8 mask) -{ - if (mask & ANT_A) - return ANT_A; - if (mask & ANT_B) - return ANT_B; - return ANT_C; -} - -/** - * il3945_rate_scale_init - Initialize the rate scale table based on assoc info - * - * The specific throughput table used is based on the type of network - * the associated with, including A, B, G, and G w/ TGG protection - */ -void il3945_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id); - -/* Initialize station's rate scaling information after adding station */ -void il4965_rs_rate_init(struct il_priv *il, struct ieee80211_sta *sta, - u8 sta_id); -void il3945_rs_rate_init(struct il_priv *il, struct ieee80211_sta *sta, - u8 sta_id); - -/** - * il_rate_control_register - Register the rate control algorithm callbacks - * - * Since the rate control algorithm is hardware specific, there is no need - * or reason to place it as a stand alone module. The driver can call - * il_rate_control_register in order to register the rate control callbacks - * with the mac80211 subsystem. This should be performed prior to calling - * ieee80211_register_hw - * - */ -int il4965_rate_control_register(void); -int il3945_rate_control_register(void); - -/** - * il_rate_control_unregister - Unregister the rate control callbacks - * - * This should be called after calling ieee80211_unregister_hw, but before - * the driver is unloaded. - */ -void il4965_rate_control_unregister(void); -void il3945_rate_control_unregister(void); - -int il_power_update_mode(struct il_priv *il, bool force); -void il_power_initialize(struct il_priv *il); - -extern u32 il_debug_level; - -#ifdef CONFIG_IWLEGACY_DEBUG -/* - * il_get_debug_level: Return active debug level for device - * - * Using sysfs it is possible to set per device debug level. This debug - * level will be used if set, otherwise the global debug level which can be - * set via module parameter is used. - */ -static inline u32 -il_get_debug_level(struct il_priv *il) -{ - if (il->debug_level) - return il->debug_level; - else - return il_debug_level; -} -#else -static inline u32 -il_get_debug_level(struct il_priv *il) -{ - return il_debug_level; -} -#endif - -#define il_print_hex_error(il, p, len) \ -do { \ - print_hex_dump(KERN_ERR, "iwl data: ", \ - DUMP_PREFIX_OFFSET, 16, 1, p, len, 1); \ -} while (0) - -#ifdef CONFIG_IWLEGACY_DEBUG -#define IL_DBG(level, fmt, args...) \ -do { \ - if (il_get_debug_level(il) & level) \ - dev_err(&il->hw->wiphy->dev, "%c %s " fmt, \ - in_interrupt() ? 'I' : 'U', __func__ , ##args); \ -} while (0) - -#define il_print_hex_dump(il, level, p, len) \ -do { \ - if (il_get_debug_level(il) & level) \ - print_hex_dump(KERN_DEBUG, "iwl data: ", \ - DUMP_PREFIX_OFFSET, 16, 1, p, len, 1); \ -} while (0) - -#else -#define IL_DBG(level, fmt, args...) -static inline void -il_print_hex_dump(struct il_priv *il, int level, const void *p, u32 len) -{ -} -#endif /* CONFIG_IWLEGACY_DEBUG */ - -#ifdef CONFIG_IWLEGACY_DEBUGFS -int il_dbgfs_register(struct il_priv *il, const char *name); -void il_dbgfs_unregister(struct il_priv *il); -#else -static inline int -il_dbgfs_register(struct il_priv *il, const char *name) -{ - return 0; -} - -static inline void -il_dbgfs_unregister(struct il_priv *il) -{ -} -#endif /* CONFIG_IWLEGACY_DEBUGFS */ - -/* - * To use the debug system: - * - * If you are defining a new debug classification, simply add it to the #define - * list here in the form of - * - * #define IL_DL_xxxx VALUE - * - * where xxxx should be the name of the classification (for example, WEP). - * - * You then need to either add a IL_xxxx_DEBUG() macro definition for your - * classification, or use IL_DBG(IL_DL_xxxx, ...) whenever you want - * to send output to that classification. - * - * The active debug levels can be accessed via files - * - * /sys/module/iwl4965/parameters/debug - * /sys/module/iwl3945/parameters/debug - * /sys/class/net/wlan0/device/debug_level - * - * when CONFIG_IWLEGACY_DEBUG=y. - */ - -/* 0x0000000F - 0x00000001 */ -#define IL_DL_INFO (1 << 0) -#define IL_DL_MAC80211 (1 << 1) -#define IL_DL_HCMD (1 << 2) -#define IL_DL_STATE (1 << 3) -/* 0x000000F0 - 0x00000010 */ -#define IL_DL_MACDUMP (1 << 4) -#define IL_DL_HCMD_DUMP (1 << 5) -#define IL_DL_EEPROM (1 << 6) -#define IL_DL_RADIO (1 << 7) -/* 0x00000F00 - 0x00000100 */ -#define IL_DL_POWER (1 << 8) -#define IL_DL_TEMP (1 << 9) -#define IL_DL_NOTIF (1 << 10) -#define IL_DL_SCAN (1 << 11) -/* 0x0000F000 - 0x00001000 */ -#define IL_DL_ASSOC (1 << 12) -#define IL_DL_DROP (1 << 13) -#define IL_DL_TXPOWER (1 << 14) -#define IL_DL_AP (1 << 15) -/* 0x000F0000 - 0x00010000 */ -#define IL_DL_FW (1 << 16) -#define IL_DL_RF_KILL (1 << 17) -#define IL_DL_FW_ERRORS (1 << 18) -#define IL_DL_LED (1 << 19) -/* 0x00F00000 - 0x00100000 */ -#define IL_DL_RATE (1 << 20) -#define IL_DL_CALIB (1 << 21) -#define IL_DL_WEP (1 << 22) -#define IL_DL_TX (1 << 23) -/* 0x0F000000 - 0x01000000 */ -#define IL_DL_RX (1 << 24) -#define IL_DL_ISR (1 << 25) -#define IL_DL_HT (1 << 26) -/* 0xF0000000 - 0x10000000 */ -#define IL_DL_11H (1 << 28) -#define IL_DL_STATS (1 << 29) -#define IL_DL_TX_REPLY (1 << 30) -#define IL_DL_QOS (1 << 31) - -#define D_INFO(f, a...) IL_DBG(IL_DL_INFO, f, ## a) -#define D_MAC80211(f, a...) IL_DBG(IL_DL_MAC80211, f, ## a) -#define D_MACDUMP(f, a...) IL_DBG(IL_DL_MACDUMP, f, ## a) -#define D_TEMP(f, a...) IL_DBG(IL_DL_TEMP, f, ## a) -#define D_SCAN(f, a...) IL_DBG(IL_DL_SCAN, f, ## a) -#define D_RX(f, a...) IL_DBG(IL_DL_RX, f, ## a) -#define D_TX(f, a...) IL_DBG(IL_DL_TX, f, ## a) -#define D_ISR(f, a...) IL_DBG(IL_DL_ISR, f, ## a) -#define D_LED(f, a...) IL_DBG(IL_DL_LED, f, ## a) -#define D_WEP(f, a...) IL_DBG(IL_DL_WEP, f, ## a) -#define D_HC(f, a...) IL_DBG(IL_DL_HCMD, f, ## a) -#define D_HC_DUMP(f, a...) IL_DBG(IL_DL_HCMD_DUMP, f, ## a) -#define D_EEPROM(f, a...) IL_DBG(IL_DL_EEPROM, f, ## a) -#define D_CALIB(f, a...) IL_DBG(IL_DL_CALIB, f, ## a) -#define D_FW(f, a...) IL_DBG(IL_DL_FW, f, ## a) -#define D_RF_KILL(f, a...) IL_DBG(IL_DL_RF_KILL, f, ## a) -#define D_DROP(f, a...) IL_DBG(IL_DL_DROP, f, ## a) -#define D_AP(f, a...) IL_DBG(IL_DL_AP, f, ## a) -#define D_TXPOWER(f, a...) IL_DBG(IL_DL_TXPOWER, f, ## a) -#define D_RATE(f, a...) IL_DBG(IL_DL_RATE, f, ## a) -#define D_NOTIF(f, a...) IL_DBG(IL_DL_NOTIF, f, ## a) -#define D_ASSOC(f, a...) IL_DBG(IL_DL_ASSOC, f, ## a) -#define D_HT(f, a...) IL_DBG(IL_DL_HT, f, ## a) -#define D_STATS(f, a...) IL_DBG(IL_DL_STATS, f, ## a) -#define D_TX_REPLY(f, a...) IL_DBG(IL_DL_TX_REPLY, f, ## a) -#define D_QOS(f, a...) IL_DBG(IL_DL_QOS, f, ## a) -#define D_RADIO(f, a...) IL_DBG(IL_DL_RADIO, f, ## a) -#define D_POWER(f, a...) IL_DBG(IL_DL_POWER, f, ## a) -#define D_11H(f, a...) IL_DBG(IL_DL_11H, f, ## a) - -#endif /* __il_core_h__ */ diff --git a/drivers/net/wireless/iwlegacy/csr.h b/drivers/net/wireless/iwlegacy/csr.h deleted file mode 100644 index 9138e15004fa..000000000000 --- a/drivers/net/wireless/iwlegacy/csr.h +++ /dev/null @@ -1,419 +0,0 @@ -/****************************************************************************** - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, - * USA - * - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - * BSD LICENSE - * - * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - *****************************************************************************/ -#ifndef __il_csr_h__ -#define __il_csr_h__ -/* - * CSR (control and status registers) - * - * CSR registers are mapped directly into PCI bus space, and are accessible - * whenever platform supplies power to device, even when device is in - * low power states due to driver-invoked device resets - * (e.g. CSR_RESET_REG_FLAG_SW_RESET) or uCode-driven power-saving modes. - * - * Use _il_wr() and _il_rd() family to access these registers; - * these provide simple PCI bus access, without waking up the MAC. - * Do not use il_wr() family for these registers; - * no need to "grab nic access" via CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ. - * The MAC (uCode processor, etc.) does not need to be powered up for accessing - * the CSR registers. - * - * NOTE: Device does need to be awake in order to read this memory - * via CSR_EEPROM register - */ -#define CSR_BASE (0x000) - -#define CSR_HW_IF_CONFIG_REG (CSR_BASE+0x000) /* hardware interface config */ -#define CSR_INT_COALESCING (CSR_BASE+0x004) /* accum ints, 32-usec units */ -#define CSR_INT (CSR_BASE+0x008) /* host interrupt status/ack */ -#define CSR_INT_MASK (CSR_BASE+0x00c) /* host interrupt enable */ -#define CSR_FH_INT_STATUS (CSR_BASE+0x010) /* busmaster int status/ack */ -#define CSR_GPIO_IN (CSR_BASE+0x018) /* read external chip pins */ -#define CSR_RESET (CSR_BASE+0x020) /* busmaster enable, NMI, etc */ -#define CSR_GP_CNTRL (CSR_BASE+0x024) - -/* 2nd byte of CSR_INT_COALESCING, not accessible via _il_wr()! */ -#define CSR_INT_PERIODIC_REG (CSR_BASE+0x005) - -/* - * Hardware revision info - * Bit fields: - * 31-8: Reserved - * 7-4: Type of device: see CSR_HW_REV_TYPE_xxx definitions - * 3-2: Revision step: 0 = A, 1 = B, 2 = C, 3 = D - * 1-0: "Dash" (-) value, as in A-1, etc. - * - * NOTE: Revision step affects calculation of CCK txpower for 4965. - * NOTE: See also CSR_HW_REV_WA_REG (work-around for bug in 4965). - */ -#define CSR_HW_REV (CSR_BASE+0x028) - -/* - * EEPROM memory reads - * - * NOTE: Device must be awake, initialized via apm_ops.init(), - * in order to read. - */ -#define CSR_EEPROM_REG (CSR_BASE+0x02c) -#define CSR_EEPROM_GP (CSR_BASE+0x030) - -#define CSR_GIO_REG (CSR_BASE+0x03C) -#define CSR_GP_UCODE_REG (CSR_BASE+0x048) -#define CSR_GP_DRIVER_REG (CSR_BASE+0x050) - -/* - * UCODE-DRIVER GP (general purpose) mailbox registers. - * SET/CLR registers set/clear bit(s) if "1" is written. - */ -#define CSR_UCODE_DRV_GP1 (CSR_BASE+0x054) -#define CSR_UCODE_DRV_GP1_SET (CSR_BASE+0x058) -#define CSR_UCODE_DRV_GP1_CLR (CSR_BASE+0x05c) -#define CSR_UCODE_DRV_GP2 (CSR_BASE+0x060) - -#define CSR_LED_REG (CSR_BASE+0x094) -#define CSR_DRAM_INT_TBL_REG (CSR_BASE+0x0A0) - -/* GIO Chicken Bits (PCI Express bus link power management) */ -#define CSR_GIO_CHICKEN_BITS (CSR_BASE+0x100) - -/* Analog phase-lock-loop configuration */ -#define CSR_ANA_PLL_CFG (CSR_BASE+0x20c) - -/* - * CSR Hardware Revision Workaround Register. Indicates hardware rev; - * "step" determines CCK backoff for txpower calculation. Used for 4965 only. - * See also CSR_HW_REV register. - * Bit fields: - * 3-2: 0 = A, 1 = B, 2 = C, 3 = D step - * 1-0: "Dash" (-) value, as in C-1, etc. - */ -#define CSR_HW_REV_WA_REG (CSR_BASE+0x22C) - -#define CSR_DBG_HPET_MEM_REG (CSR_BASE+0x240) -#define CSR_DBG_LINK_PWR_MGMT_REG (CSR_BASE+0x250) - -/* Bits for CSR_HW_IF_CONFIG_REG */ -#define CSR49_HW_IF_CONFIG_REG_BIT_4965_R (0x00000010) -#define CSR_HW_IF_CONFIG_REG_MSK_BOARD_VER (0x00000C00) -#define CSR_HW_IF_CONFIG_REG_BIT_MAC_SI (0x00000100) -#define CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI (0x00000200) - -#define CSR39_HW_IF_CONFIG_REG_BIT_3945_MB (0x00000100) -#define CSR39_HW_IF_CONFIG_REG_BIT_3945_MM (0x00000200) -#define CSR39_HW_IF_CONFIG_REG_BIT_SKU_MRC (0x00000400) -#define CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE (0x00000800) -#define CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_A (0x00000000) -#define CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_B (0x00001000) - -#define CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A (0x00080000) -#define CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM (0x00200000) -#define CSR_HW_IF_CONFIG_REG_BIT_NIC_READY (0x00400000) /* PCI_OWN_SEM */ -#define CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE (0x02000000) /* ME_OWN */ -#define CSR_HW_IF_CONFIG_REG_PREPARE (0x08000000) /* WAKE_ME */ - -#define CSR_INT_PERIODIC_DIS (0x00) /* disable periodic int */ -#define CSR_INT_PERIODIC_ENA (0xFF) /* 255*32 usec ~ 8 msec */ - -/* interrupt flags in INTA, set by uCode or hardware (e.g. dma), - * acknowledged (reset) by host writing "1" to flagged bits. */ -#define CSR_INT_BIT_FH_RX (1 << 31) /* Rx DMA, cmd responses, FH_INT[17:16] */ -#define CSR_INT_BIT_HW_ERR (1 << 29) /* DMA hardware error FH_INT[31] */ -#define CSR_INT_BIT_RX_PERIODIC (1 << 28) /* Rx periodic */ -#define CSR_INT_BIT_FH_TX (1 << 27) /* Tx DMA FH_INT[1:0] */ -#define CSR_INT_BIT_SCD (1 << 26) /* TXQ pointer advanced */ -#define CSR_INT_BIT_SW_ERR (1 << 25) /* uCode error */ -#define CSR_INT_BIT_RF_KILL (1 << 7) /* HW RFKILL switch GP_CNTRL[27] toggled */ -#define CSR_INT_BIT_CT_KILL (1 << 6) /* Critical temp (chip too hot) rfkill */ -#define CSR_INT_BIT_SW_RX (1 << 3) /* Rx, command responses, 3945 */ -#define CSR_INT_BIT_WAKEUP (1 << 1) /* NIC controller waking up (pwr mgmt) */ -#define CSR_INT_BIT_ALIVE (1 << 0) /* uCode interrupts once it initializes */ - -#define CSR_INI_SET_MASK (CSR_INT_BIT_FH_RX | \ - CSR_INT_BIT_HW_ERR | \ - CSR_INT_BIT_FH_TX | \ - CSR_INT_BIT_SW_ERR | \ - CSR_INT_BIT_RF_KILL | \ - CSR_INT_BIT_SW_RX | \ - CSR_INT_BIT_WAKEUP | \ - CSR_INT_BIT_ALIVE) - -/* interrupt flags in FH (flow handler) (PCI busmaster DMA) */ -#define CSR_FH_INT_BIT_ERR (1 << 31) /* Error */ -#define CSR_FH_INT_BIT_HI_PRIOR (1 << 30) /* High priority Rx, bypass coalescing */ -#define CSR39_FH_INT_BIT_RX_CHNL2 (1 << 18) /* Rx channel 2 (3945 only) */ -#define CSR_FH_INT_BIT_RX_CHNL1 (1 << 17) /* Rx channel 1 */ -#define CSR_FH_INT_BIT_RX_CHNL0 (1 << 16) /* Rx channel 0 */ -#define CSR39_FH_INT_BIT_TX_CHNL6 (1 << 6) /* Tx channel 6 (3945 only) */ -#define CSR_FH_INT_BIT_TX_CHNL1 (1 << 1) /* Tx channel 1 */ -#define CSR_FH_INT_BIT_TX_CHNL0 (1 << 0) /* Tx channel 0 */ - -#define CSR39_FH_INT_RX_MASK (CSR_FH_INT_BIT_HI_PRIOR | \ - CSR39_FH_INT_BIT_RX_CHNL2 | \ - CSR_FH_INT_BIT_RX_CHNL1 | \ - CSR_FH_INT_BIT_RX_CHNL0) - -#define CSR39_FH_INT_TX_MASK (CSR39_FH_INT_BIT_TX_CHNL6 | \ - CSR_FH_INT_BIT_TX_CHNL1 | \ - CSR_FH_INT_BIT_TX_CHNL0) - -#define CSR49_FH_INT_RX_MASK (CSR_FH_INT_BIT_HI_PRIOR | \ - CSR_FH_INT_BIT_RX_CHNL1 | \ - CSR_FH_INT_BIT_RX_CHNL0) - -#define CSR49_FH_INT_TX_MASK (CSR_FH_INT_BIT_TX_CHNL1 | \ - CSR_FH_INT_BIT_TX_CHNL0) - -/* GPIO */ -#define CSR_GPIO_IN_BIT_AUX_POWER (0x00000200) -#define CSR_GPIO_IN_VAL_VAUX_PWR_SRC (0x00000000) -#define CSR_GPIO_IN_VAL_VMAIN_PWR_SRC (0x00000200) - -/* RESET */ -#define CSR_RESET_REG_FLAG_NEVO_RESET (0x00000001) -#define CSR_RESET_REG_FLAG_FORCE_NMI (0x00000002) -#define CSR_RESET_REG_FLAG_SW_RESET (0x00000080) -#define CSR_RESET_REG_FLAG_MASTER_DISABLED (0x00000100) -#define CSR_RESET_REG_FLAG_STOP_MASTER (0x00000200) -#define CSR_RESET_LINK_PWR_MGMT_DISABLED (0x80000000) - -/* - * GP (general purpose) CONTROL REGISTER - * Bit fields: - * 27: HW_RF_KILL_SW - * Indicates state of (platform's) hardware RF-Kill switch - * 26-24: POWER_SAVE_TYPE - * Indicates current power-saving mode: - * 000 -- No power saving - * 001 -- MAC power-down - * 010 -- PHY (radio) power-down - * 011 -- Error - * 9-6: SYS_CONFIG - * Indicates current system configuration, reflecting pins on chip - * as forced high/low by device circuit board. - * 4: GOING_TO_SLEEP - * Indicates MAC is entering a power-saving sleep power-down. - * Not a good time to access device-internal resources. - * 3: MAC_ACCESS_REQ - * Host sets this to request and maintain MAC wakeup, to allow host - * access to device-internal resources. Host must wait for - * MAC_CLOCK_READY (and !GOING_TO_SLEEP) before accessing non-CSR - * device registers. - * 2: INIT_DONE - * Host sets this to put device into fully operational D0 power mode. - * Host resets this after SW_RESET to put device into low power mode. - * 0: MAC_CLOCK_READY - * Indicates MAC (ucode processor, etc.) is powered up and can run. - * Internal resources are accessible. - * NOTE: This does not indicate that the processor is actually running. - * NOTE: This does not indicate that 4965 or 3945 has completed - * init or post-power-down restore of internal SRAM memory. - * Use CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP as indication that - * SRAM is restored and uCode is in normal operation mode. - * Later devices (5xxx/6xxx/1xxx) use non-volatile SRAM, and - * do not need to save/restore it. - * NOTE: After device reset, this bit remains "0" until host sets - * INIT_DONE - */ -#define CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY (0x00000001) -#define CSR_GP_CNTRL_REG_FLAG_INIT_DONE (0x00000004) -#define CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ (0x00000008) -#define CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP (0x00000010) - -#define CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN (0x00000001) - -#define CSR_GP_CNTRL_REG_MSK_POWER_SAVE_TYPE (0x07000000) -#define CSR_GP_CNTRL_REG_FLAG_MAC_POWER_SAVE (0x04000000) -#define CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW (0x08000000) - -/* EEPROM REG */ -#define CSR_EEPROM_REG_READ_VALID_MSK (0x00000001) -#define CSR_EEPROM_REG_BIT_CMD (0x00000002) -#define CSR_EEPROM_REG_MSK_ADDR (0x0000FFFC) -#define CSR_EEPROM_REG_MSK_DATA (0xFFFF0000) - -/* EEPROM GP */ -#define CSR_EEPROM_GP_VALID_MSK (0x00000007) /* signature */ -#define CSR_EEPROM_GP_IF_OWNER_MSK (0x00000180) -#define CSR_EEPROM_GP_GOOD_SIG_EEP_LESS_THAN_4K (0x00000002) -#define CSR_EEPROM_GP_GOOD_SIG_EEP_MORE_THAN_4K (0x00000004) - -/* GP REG */ -#define CSR_GP_REG_POWER_SAVE_STATUS_MSK (0x03000000) /* bit 24/25 */ -#define CSR_GP_REG_NO_POWER_SAVE (0x00000000) -#define CSR_GP_REG_MAC_POWER_SAVE (0x01000000) -#define CSR_GP_REG_PHY_POWER_SAVE (0x02000000) -#define CSR_GP_REG_POWER_SAVE_ERROR (0x03000000) - -/* CSR GIO */ -#define CSR_GIO_REG_VAL_L0S_ENABLED (0x00000002) - -/* - * UCODE-DRIVER GP (general purpose) mailbox register 1 - * Host driver and uCode write and/or read this register to communicate with - * each other. - * Bit fields: - * 4: UCODE_DISABLE - * Host sets this to request permanent halt of uCode, same as - * sending CARD_STATE command with "halt" bit set. - * 3: CT_KILL_EXIT - * Host sets this to request exit from CT_KILL state, i.e. host thinks - * device temperature is low enough to continue normal operation. - * 2: CMD_BLOCKED - * Host sets this during RF KILL power-down sequence (HW, SW, CT KILL) - * to release uCode to clear all Tx and command queues, enter - * unassociated mode, and power down. - * NOTE: Some devices also use HBUS_TARG_MBX_C register for this bit. - * 1: SW_BIT_RFKILL - * Host sets this when issuing CARD_STATE command to request - * device sleep. - * 0: MAC_SLEEP - * uCode sets this when preparing a power-saving power-down. - * uCode resets this when power-up is complete and SRAM is sane. - * NOTE: 3945/4965 saves internal SRAM data to host when powering down, - * and must restore this data after powering back up. - * MAC_SLEEP is the best indication that restore is complete. - * Later devices (5xxx/6xxx/1xxx) use non-volatile SRAM, and - * do not need to save/restore it. - */ -#define CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP (0x00000001) -#define CSR_UCODE_SW_BIT_RFKILL (0x00000002) -#define CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED (0x00000004) -#define CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT (0x00000008) - -/* GIO Chicken Bits (PCI Express bus link power management) */ -#define CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX (0x00800000) -#define CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER (0x20000000) - -/* LED */ -#define CSR_LED_BSM_CTRL_MSK (0xFFFFFFDF) -#define CSR_LED_REG_TRUN_ON (0x78) -#define CSR_LED_REG_TRUN_OFF (0x38) - -/* ANA_PLL */ -#define CSR39_ANA_PLL_CFG_VAL (0x01000000) - -/* HPET MEM debug */ -#define CSR_DBG_HPET_MEM_REG_VAL (0xFFFF0000) - -/* DRAM INT TBL */ -#define CSR_DRAM_INT_TBL_ENABLE (1 << 31) -#define CSR_DRAM_INIT_TBL_WRAP_CHECK (1 << 27) - -/* - * HBUS (Host-side Bus) - * - * HBUS registers are mapped directly into PCI bus space, but are used - * to indirectly access device's internal memory or registers that - * may be powered-down. - * - * Use il_wr()/il_rd() family - * for these registers; - * host must "grab nic access" via CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ - * to make sure the MAC (uCode processor, etc.) is powered up for accessing - * internal resources. - * - * Do not use _il_wr()/_il_rd() family to access these registers; - * these provide only simple PCI bus access, without waking up the MAC. - */ -#define HBUS_BASE (0x400) - -/* - * Registers for accessing device's internal SRAM memory (e.g. SCD SRAM - * structures, error log, event log, verifying uCode load). - * First write to address register, then read from or write to data register - * to complete the job. Once the address register is set up, accesses to - * data registers auto-increment the address by one dword. - * Bit usage for address registers (read or write): - * 0-31: memory address within device - */ -#define HBUS_TARG_MEM_RADDR (HBUS_BASE+0x00c) -#define HBUS_TARG_MEM_WADDR (HBUS_BASE+0x010) -#define HBUS_TARG_MEM_WDAT (HBUS_BASE+0x018) -#define HBUS_TARG_MEM_RDAT (HBUS_BASE+0x01c) - -/* Mailbox C, used as workaround alternative to CSR_UCODE_DRV_GP1 mailbox */ -#define HBUS_TARG_MBX_C (HBUS_BASE+0x030) -#define HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED (0x00000004) - -/* - * Registers for accessing device's internal peripheral registers - * (e.g. SCD, BSM, etc.). First write to address register, - * then read from or write to data register to complete the job. - * Bit usage for address registers (read or write): - * 0-15: register address (offset) within device - * 24-25: (# bytes - 1) to read or write (e.g. 3 for dword) - */ -#define HBUS_TARG_PRPH_WADDR (HBUS_BASE+0x044) -#define HBUS_TARG_PRPH_RADDR (HBUS_BASE+0x048) -#define HBUS_TARG_PRPH_WDAT (HBUS_BASE+0x04c) -#define HBUS_TARG_PRPH_RDAT (HBUS_BASE+0x050) - -/* - * Per-Tx-queue write pointer (idx, really!) - * Indicates idx to next TFD that driver will fill (1 past latest filled). - * Bit usage: - * 0-7: queue write idx - * 11-8: queue selector - */ -#define HBUS_TARG_WRPTR (HBUS_BASE+0x060) - -#endif /* !__il_csr_h__ */ diff --git a/drivers/net/wireless/iwlegacy/debug.c b/drivers/net/wireless/iwlegacy/debug.c deleted file mode 100644 index 908b9f4fef6f..000000000000 --- a/drivers/net/wireless/iwlegacy/debug.c +++ /dev/null @@ -1,1426 +0,0 @@ -/****************************************************************************** - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, - * USA - * - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - *****************************************************************************/ -#include <linux/ieee80211.h> -#include <linux/export.h> -#include <net/mac80211.h> - -#include "common.h" - -static void -il_clear_traffic_stats(struct il_priv *il) -{ - memset(&il->tx_stats, 0, sizeof(struct traffic_stats)); - memset(&il->rx_stats, 0, sizeof(struct traffic_stats)); -} - -/* - * il_update_stats function record all the MGMT, CTRL and DATA pkt for - * both TX and Rx . Use debugfs to display the rx/rx_stats - */ -void -il_update_stats(struct il_priv *il, bool is_tx, __le16 fc, u16 len) -{ - struct traffic_stats *stats; - - if (is_tx) - stats = &il->tx_stats; - else - stats = &il->rx_stats; - - if (ieee80211_is_mgmt(fc)) { - switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { - case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ): - stats->mgmt[MANAGEMENT_ASSOC_REQ]++; - break; - case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP): - stats->mgmt[MANAGEMENT_ASSOC_RESP]++; - break; - case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ): - stats->mgmt[MANAGEMENT_REASSOC_REQ]++; - break; - case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP): - stats->mgmt[MANAGEMENT_REASSOC_RESP]++; - break; - case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ): - stats->mgmt[MANAGEMENT_PROBE_REQ]++; - break; - case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP): - stats->mgmt[MANAGEMENT_PROBE_RESP]++; - break; - case cpu_to_le16(IEEE80211_STYPE_BEACON): - stats->mgmt[MANAGEMENT_BEACON]++; - break; - case cpu_to_le16(IEEE80211_STYPE_ATIM): - stats->mgmt[MANAGEMENT_ATIM]++; - break; - case cpu_to_le16(IEEE80211_STYPE_DISASSOC): - stats->mgmt[MANAGEMENT_DISASSOC]++; - break; - case cpu_to_le16(IEEE80211_STYPE_AUTH): - stats->mgmt[MANAGEMENT_AUTH]++; - break; - case cpu_to_le16(IEEE80211_STYPE_DEAUTH): - stats->mgmt[MANAGEMENT_DEAUTH]++; - break; - case cpu_to_le16(IEEE80211_STYPE_ACTION): - stats->mgmt[MANAGEMENT_ACTION]++; - break; - } - } else if (ieee80211_is_ctl(fc)) { - switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { - case cpu_to_le16(IEEE80211_STYPE_BACK_REQ): - stats->ctrl[CONTROL_BACK_REQ]++; - break; - case cpu_to_le16(IEEE80211_STYPE_BACK): - stats->ctrl[CONTROL_BACK]++; - break; - case cpu_to_le16(IEEE80211_STYPE_PSPOLL): - stats->ctrl[CONTROL_PSPOLL]++; - break; - case cpu_to_le16(IEEE80211_STYPE_RTS): - stats->ctrl[CONTROL_RTS]++; - break; - case cpu_to_le16(IEEE80211_STYPE_CTS): - stats->ctrl[CONTROL_CTS]++; - break; - case cpu_to_le16(IEEE80211_STYPE_ACK): - stats->ctrl[CONTROL_ACK]++; - break; - case cpu_to_le16(IEEE80211_STYPE_CFEND): - stats->ctrl[CONTROL_CFEND]++; - break; - case cpu_to_le16(IEEE80211_STYPE_CFENDACK): - stats->ctrl[CONTROL_CFENDACK]++; - break; - } - } else { - /* data */ - stats->data_cnt++; - stats->data_bytes += len; - } -} -EXPORT_SYMBOL(il_update_stats); - -/* create and remove of files */ -#define DEBUGFS_ADD_FILE(name, parent, mode) do { \ - if (!debugfs_create_file(#name, mode, parent, il, \ - &il_dbgfs_##name##_ops)) \ - goto err; \ -} while (0) - -#define DEBUGFS_ADD_BOOL(name, parent, ptr) do { \ - struct dentry *__tmp; \ - __tmp = debugfs_create_bool(#name, S_IWUSR | S_IRUSR, \ - parent, ptr); \ - if (IS_ERR(__tmp) || !__tmp) \ - goto err; \ -} while (0) - -#define DEBUGFS_ADD_X32(name, parent, ptr) do { \ - struct dentry *__tmp; \ - __tmp = debugfs_create_x32(#name, S_IWUSR | S_IRUSR, \ - parent, ptr); \ - if (IS_ERR(__tmp) || !__tmp) \ - goto err; \ -} while (0) - -/* file operation */ -#define DEBUGFS_READ_FUNC(name) \ -static ssize_t il_dbgfs_##name##_read(struct file *file, \ - char __user *user_buf, \ - size_t count, loff_t *ppos); - -#define DEBUGFS_WRITE_FUNC(name) \ -static ssize_t il_dbgfs_##name##_write(struct file *file, \ - const char __user *user_buf, \ - size_t count, loff_t *ppos); - - -#define DEBUGFS_READ_FILE_OPS(name) \ - DEBUGFS_READ_FUNC(name); \ -static const struct file_operations il_dbgfs_##name##_ops = { \ - .read = il_dbgfs_##name##_read, \ - .open = simple_open, \ - .llseek = generic_file_llseek, \ -}; - -#define DEBUGFS_WRITE_FILE_OPS(name) \ - DEBUGFS_WRITE_FUNC(name); \ -static const struct file_operations il_dbgfs_##name##_ops = { \ - .write = il_dbgfs_##name##_write, \ - .open = simple_open, \ - .llseek = generic_file_llseek, \ -}; - -#define DEBUGFS_READ_WRITE_FILE_OPS(name) \ - DEBUGFS_READ_FUNC(name); \ - DEBUGFS_WRITE_FUNC(name); \ -static const struct file_operations il_dbgfs_##name##_ops = { \ - .write = il_dbgfs_##name##_write, \ - .read = il_dbgfs_##name##_read, \ - .open = simple_open, \ - .llseek = generic_file_llseek, \ -}; - -static const char * -il_get_mgmt_string(int cmd) -{ - switch (cmd) { - IL_CMD(MANAGEMENT_ASSOC_REQ); - IL_CMD(MANAGEMENT_ASSOC_RESP); - IL_CMD(MANAGEMENT_REASSOC_REQ); - IL_CMD(MANAGEMENT_REASSOC_RESP); - IL_CMD(MANAGEMENT_PROBE_REQ); - IL_CMD(MANAGEMENT_PROBE_RESP); - IL_CMD(MANAGEMENT_BEACON); - IL_CMD(MANAGEMENT_ATIM); - IL_CMD(MANAGEMENT_DISASSOC); - IL_CMD(MANAGEMENT_AUTH); - IL_CMD(MANAGEMENT_DEAUTH); - IL_CMD(MANAGEMENT_ACTION); - default: - return "UNKNOWN"; - - } -} - -static const char * -il_get_ctrl_string(int cmd) -{ - switch (cmd) { - IL_CMD(CONTROL_BACK_REQ); - IL_CMD(CONTROL_BACK); - IL_CMD(CONTROL_PSPOLL); - IL_CMD(CONTROL_RTS); - IL_CMD(CONTROL_CTS); - IL_CMD(CONTROL_ACK); - IL_CMD(CONTROL_CFEND); - IL_CMD(CONTROL_CFENDACK); - default: - return "UNKNOWN"; - - } -} - -static ssize_t -il_dbgfs_tx_stats_read(struct file *file, char __user *user_buf, size_t count, - loff_t *ppos) -{ - - struct il_priv *il = file->private_data; - char *buf; - int pos = 0; - - int cnt; - ssize_t ret; - const size_t bufsz = - 100 + sizeof(char) * 50 * (MANAGEMENT_MAX + CONTROL_MAX); - buf = kzalloc(bufsz, GFP_KERNEL); - if (!buf) - return -ENOMEM; - pos += scnprintf(buf + pos, bufsz - pos, "Management:\n"); - for (cnt = 0; cnt < MANAGEMENT_MAX; cnt++) { - pos += - scnprintf(buf + pos, bufsz - pos, "\t%25s\t\t: %u\n", - il_get_mgmt_string(cnt), il->tx_stats.mgmt[cnt]); - } - pos += scnprintf(buf + pos, bufsz - pos, "Control\n"); - for (cnt = 0; cnt < CONTROL_MAX; cnt++) { - pos += - scnprintf(buf + pos, bufsz - pos, "\t%25s\t\t: %u\n", - il_get_ctrl_string(cnt), il->tx_stats.ctrl[cnt]); - } - pos += scnprintf(buf + pos, bufsz - pos, "Data:\n"); - pos += - scnprintf(buf + pos, bufsz - pos, "\tcnt: %u\n", - il->tx_stats.data_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, "\tbytes: %llu\n", - il->tx_stats.data_bytes); - ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); - kfree(buf); - return ret; -} - -static ssize_t -il_dbgfs_clear_traffic_stats_write(struct file *file, - const char __user *user_buf, size_t count, - loff_t *ppos) -{ - struct il_priv *il = file->private_data; - u32 clear_flag; - char buf[8]; - int buf_size; - - memset(buf, 0, sizeof(buf)); - buf_size = min(count, sizeof(buf) - 1); - if (copy_from_user(buf, user_buf, buf_size)) - return -EFAULT; - if (sscanf(buf, "%x", &clear_flag) != 1) - return -EFAULT; - il_clear_traffic_stats(il); - - return count; -} - -static ssize_t -il_dbgfs_rx_stats_read(struct file *file, char __user *user_buf, size_t count, - loff_t *ppos) -{ - - struct il_priv *il = file->private_data; - char *buf; - int pos = 0; - int cnt; - ssize_t ret; - const size_t bufsz = - 100 + sizeof(char) * 50 * (MANAGEMENT_MAX + CONTROL_MAX); - buf = kzalloc(bufsz, GFP_KERNEL); - if (!buf) - return -ENOMEM; - - pos += scnprintf(buf + pos, bufsz - pos, "Management:\n"); - for (cnt = 0; cnt < MANAGEMENT_MAX; cnt++) { - pos += - scnprintf(buf + pos, bufsz - pos, "\t%25s\t\t: %u\n", - il_get_mgmt_string(cnt), il->rx_stats.mgmt[cnt]); - } - pos += scnprintf(buf + pos, bufsz - pos, "Control:\n"); - for (cnt = 0; cnt < CONTROL_MAX; cnt++) { - pos += - scnprintf(buf + pos, bufsz - pos, "\t%25s\t\t: %u\n", - il_get_ctrl_string(cnt), il->rx_stats.ctrl[cnt]); - } - pos += scnprintf(buf + pos, bufsz - pos, "Data:\n"); - pos += - scnprintf(buf + pos, bufsz - pos, "\tcnt: %u\n", - il->rx_stats.data_cnt); - pos += - scnprintf(buf + pos, bufsz - pos, "\tbytes: %llu\n", - il->rx_stats.data_bytes); - - ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); - kfree(buf); - return ret; -} - -#define BYTE1_MASK 0x000000ff; -#define BYTE2_MASK 0x0000ffff; -#define BYTE3_MASK 0x00ffffff; -static ssize_t -il_dbgfs_sram_read(struct file *file, char __user *user_buf, size_t count, - loff_t *ppos) -{ - u32 val; - char *buf; - ssize_t ret; - int i; - int pos = 0; - struct il_priv *il = file->private_data; - size_t bufsz; - - /* default is to dump the entire data segment */ - if (!il->dbgfs_sram_offset && !il->dbgfs_sram_len) { - il->dbgfs_sram_offset = 0x800000; - if (il->ucode_type == UCODE_INIT) - il->dbgfs_sram_len = il->ucode_init_data.len; - else - il->dbgfs_sram_len = il->ucode_data.len; - } - bufsz = 30 + il->dbgfs_sram_len * sizeof(char) * 10; - buf = kmalloc(bufsz, GFP_KERNEL); - if (!buf) - return -ENOMEM; - pos += - scnprintf(buf + pos, bufsz - pos, "sram_len: 0x%x\n", - il->dbgfs_sram_len); - pos += - scnprintf(buf + pos, bufsz - pos, "sram_offset: 0x%x\n", - il->dbgfs_sram_offset); - for (i = il->dbgfs_sram_len; i > 0; i -= 4) { - val = - il_read_targ_mem(il, - il->dbgfs_sram_offset + - il->dbgfs_sram_len - i); - if (i < 4) { - switch (i) { - case 1: - val &= BYTE1_MASK; - break; - case 2: - val &= BYTE2_MASK; - break; - case 3: - val &= BYTE3_MASK; - break; - } - } - if (!(i % 16)) - pos += scnprintf(buf + pos, bufsz - pos, "\n"); - pos += scnprintf(buf + pos, bufsz - pos, "0x%08x ", val); - } - pos += scnprintf(buf + pos, bufsz - pos, "\n"); - - ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); - kfree(buf); - return ret; -} - -static ssize_t -il_dbgfs_sram_write(struct file *file, const char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct il_priv *il = file->private_data; - char buf[64]; - int buf_size; - u32 offset, len; - - memset(buf, 0, sizeof(buf)); - buf_size = min(count, sizeof(buf) - 1); - if (copy_from_user(buf, user_buf, buf_size)) - return -EFAULT; - - if (sscanf(buf, "%x,%x", &offset, &len) == 2) { - il->dbgfs_sram_offset = offset; - il->dbgfs_sram_len = len; - } else { - il->dbgfs_sram_offset = 0; - il->dbgfs_sram_len = 0; - } - - return count; -} - -static ssize_t -il_dbgfs_stations_read(struct file *file, char __user *user_buf, size_t count, - loff_t *ppos) -{ - struct il_priv *il = file->private_data; - struct il_station_entry *station; - int max_sta = il->hw_params.max_stations; - char *buf; - int i, j, pos = 0; - ssize_t ret; - /* Add 30 for initial string */ - const size_t bufsz = 30 + sizeof(char) * 500 * (il->num_stations); - - buf = kmalloc(bufsz, GFP_KERNEL); - if (!buf) - return -ENOMEM; - - pos += - scnprintf(buf + pos, bufsz - pos, "num of stations: %d\n\n", - il->num_stations); - - for (i = 0; i < max_sta; i++) { - station = &il->stations[i]; - if (!station->used) - continue; - pos += - scnprintf(buf + pos, bufsz - pos, - "station %d - addr: %pM, flags: %#x\n", i, - station->sta.sta.addr, - station->sta.station_flags_msk); - pos += - scnprintf(buf + pos, bufsz - pos, - "TID\tseq_num\ttxq_id\tframes\ttfds\t"); - pos += - scnprintf(buf + pos, bufsz - pos, - "start_idx\tbitmap\t\t\trate_n_flags\n"); - - for (j = 0; j < MAX_TID_COUNT; j++) { - pos += - scnprintf(buf + pos, bufsz - pos, - "%d:\t%#x\t%#x\t%u\t%u\t%u\t\t%#.16llx\t%#x", - j, station->tid[j].seq_number, - station->tid[j].agg.txq_id, - station->tid[j].agg.frame_count, - station->tid[j].tfds_in_queue, - station->tid[j].agg.start_idx, - station->tid[j].agg.bitmap, - station->tid[j].agg.rate_n_flags); - - if (station->tid[j].agg.wait_for_ba) - pos += - scnprintf(buf + pos, bufsz - pos, - " - waitforba"); - pos += scnprintf(buf + pos, bufsz - pos, "\n"); - } - - pos += scnprintf(buf + pos, bufsz - pos, "\n"); - } - - ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); - kfree(buf); - return ret; -} - -static ssize_t -il_dbgfs_nvm_read(struct file *file, char __user *user_buf, size_t count, - loff_t *ppos) -{ - ssize_t ret; - struct il_priv *il = file->private_data; - int pos = 0, ofs = 0, buf_size = 0; - const u8 *ptr; - char *buf; - u16 eeprom_ver; - size_t eeprom_len = il->cfg->eeprom_size; - buf_size = 4 * eeprom_len + 256; - - if (eeprom_len % 16) { - IL_ERR("NVM size is not multiple of 16.\n"); - return -ENODATA; - } - - ptr = il->eeprom; - if (!ptr) { - IL_ERR("Invalid EEPROM memory\n"); - return -ENOMEM; - } - - /* 4 characters for byte 0xYY */ - buf = kzalloc(buf_size, GFP_KERNEL); - if (!buf) { - IL_ERR("Can not allocate Buffer\n"); - return -ENOMEM; - } - eeprom_ver = il_eeprom_query16(il, EEPROM_VERSION); - pos += - scnprintf(buf + pos, buf_size - pos, "EEPROM " "version: 0x%x\n", - eeprom_ver); - for (ofs = 0; ofs < eeprom_len; ofs += 16) { - pos += scnprintf(buf + pos, buf_size - pos, "0x%.4x %16ph\n", - ofs, ptr + ofs); - } - - ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); - kfree(buf); - return ret; -} - -static ssize_t -il_dbgfs_channels_read(struct file *file, char __user *user_buf, size_t count, - loff_t *ppos) -{ - struct il_priv *il = file->private_data; - struct ieee80211_channel *channels = NULL; - const struct ieee80211_supported_band *supp_band = NULL; - int pos = 0, i, bufsz = PAGE_SIZE; - char *buf; - ssize_t ret; - - if (!test_bit(S_GEO_CONFIGURED, &il->status)) - return -EAGAIN; - - buf = kzalloc(bufsz, GFP_KERNEL); - if (!buf) { - IL_ERR("Can not allocate Buffer\n"); - return -ENOMEM; - } - - supp_band = il_get_hw_mode(il, IEEE80211_BAND_2GHZ); - if (supp_band) { - channels = supp_band->channels; - - pos += - scnprintf(buf + pos, bufsz - pos, - "Displaying %d channels in 2.4GHz band 802.11bg):\n", - supp_band->n_channels); - - for (i = 0; i < supp_band->n_channels; i++) - pos += - scnprintf(buf + pos, bufsz - pos, - "%d: %ddBm: BSS%s%s, %s.\n", - channels[i].hw_value, - channels[i].max_power, - channels[i]. - flags & IEEE80211_CHAN_RADAR ? - " (IEEE 802.11h required)" : "", - ((channels[i]. - flags & IEEE80211_CHAN_NO_IR) || - (channels[i]. - flags & IEEE80211_CHAN_RADAR)) ? "" : - ", IBSS", - channels[i]. - flags & IEEE80211_CHAN_NO_IR ? - "passive only" : "active/passive"); - } - supp_band = il_get_hw_mode(il, IEEE80211_BAND_5GHZ); - if (supp_band) { - channels = supp_band->channels; - - pos += - scnprintf(buf + pos, bufsz - pos, - "Displaying %d channels in 5.2GHz band (802.11a)\n", - supp_band->n_channels); - - for (i = 0; i < supp_band->n_channels; i++) - pos += - scnprintf(buf + pos, bufsz - pos, - "%d: %ddBm: BSS%s%s, %s.\n", - channels[i].hw_value, - channels[i].max_power, - channels[i]. - flags & IEEE80211_CHAN_RADAR ? - " (IEEE 802.11h required)" : "", - ((channels[i]. - flags & IEEE80211_CHAN_NO_IR) || - (channels[i]. - flags & IEEE80211_CHAN_RADAR)) ? "" : - ", IBSS", - channels[i]. - flags & IEEE80211_CHAN_NO_IR ? - "passive only" : "active/passive"); - } - ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); - kfree(buf); - return ret; -} - -static ssize_t -il_dbgfs_status_read(struct file *file, char __user *user_buf, size_t count, - loff_t *ppos) -{ - - struct il_priv *il = file->private_data; - char buf[512]; - int pos = 0; - const size_t bufsz = sizeof(buf); - - pos += - scnprintf(buf + pos, bufsz - pos, "S_HCMD_ACTIVE:\t %d\n", - test_bit(S_HCMD_ACTIVE, &il->status)); - pos += - scnprintf(buf + pos, bufsz - pos, "S_INT_ENABLED:\t %d\n", - test_bit(S_INT_ENABLED, &il->status)); - pos += - scnprintf(buf + pos, bufsz - pos, "S_RFKILL:\t %d\n", - test_bit(S_RFKILL, &il->status)); - pos += - scnprintf(buf + pos, bufsz - pos, "S_CT_KILL:\t\t %d\n", - test_bit(S_CT_KILL, &il->status)); - pos += - scnprintf(buf + pos, bufsz - pos, "S_INIT:\t\t %d\n", - test_bit(S_INIT, &il->status)); - pos += - scnprintf(buf + pos, bufsz - pos, "S_ALIVE:\t\t %d\n", - test_bit(S_ALIVE, &il->status)); - pos += - scnprintf(buf + pos, bufsz - pos, "S_READY:\t\t %d\n", - test_bit(S_READY, &il->status)); - pos += - scnprintf(buf + pos, bufsz - pos, "S_TEMPERATURE:\t %d\n", - test_bit(S_TEMPERATURE, &il->status)); - pos += - scnprintf(buf + pos, bufsz - pos, "S_GEO_CONFIGURED:\t %d\n", - test_bit(S_GEO_CONFIGURED, &il->status)); - pos += - scnprintf(buf + pos, bufsz - pos, "S_EXIT_PENDING:\t %d\n", - test_bit(S_EXIT_PENDING, &il->status)); - pos += - scnprintf(buf + pos, bufsz - pos, "S_STATS:\t %d\n", - test_bit(S_STATS, &il->status)); - pos += - scnprintf(buf + pos, bufsz - pos, "S_SCANNING:\t %d\n", - test_bit(S_SCANNING, &il->status)); - pos += - scnprintf(buf + pos, bufsz - pos, "S_SCAN_ABORTING:\t %d\n", - test_bit(S_SCAN_ABORTING, &il->status)); - pos += - scnprintf(buf + pos, bufsz - pos, "S_SCAN_HW:\t\t %d\n", - test_bit(S_SCAN_HW, &il->status)); - pos += - scnprintf(buf + pos, bufsz - pos, "S_POWER_PMI:\t %d\n", - test_bit(S_POWER_PMI, &il->status)); - pos += - scnprintf(buf + pos, bufsz - pos, "S_FW_ERROR:\t %d\n", - test_bit(S_FW_ERROR, &il->status)); - return simple_read_from_buffer(user_buf, count, ppos, buf, pos); -} - -static ssize_t -il_dbgfs_interrupt_read(struct file *file, char __user *user_buf, size_t count, - loff_t *ppos) -{ - - struct il_priv *il = file->private_data; - int pos = 0; - int cnt = 0; - char *buf; - int bufsz = 24 * 64; /* 24 items * 64 char per item */ - ssize_t ret; - - buf = kzalloc(bufsz, GFP_KERNEL); - if (!buf) { - IL_ERR("Can not allocate Buffer\n"); - return -ENOMEM; - } - - pos += - scnprintf(buf + pos, bufsz - pos, "Interrupt Statistics Report:\n"); - - pos += - scnprintf(buf + pos, bufsz - pos, "HW Error:\t\t\t %u\n", - il->isr_stats.hw); - pos += - scnprintf(buf + pos, bufsz - pos, "SW Error:\t\t\t %u\n", - il->isr_stats.sw); - if (il->isr_stats.sw || il->isr_stats.hw) { - pos += - scnprintf(buf + pos, bufsz - pos, - "\tLast Restarting Code: 0x%X\n", - il->isr_stats.err_code); - } -#ifdef CONFIG_IWLEGACY_DEBUG - pos += - scnprintf(buf + pos, bufsz - pos, "Frame transmitted:\t\t %u\n", - il->isr_stats.sch); - pos += - scnprintf(buf + pos, bufsz - pos, "Alive interrupt:\t\t %u\n", - il->isr_stats.alive); -#endif - pos += - scnprintf(buf + pos, bufsz - pos, - "HW RF KILL switch toggled:\t %u\n", - il->isr_stats.rfkill); - - pos += - scnprintf(buf + pos, bufsz - pos, "CT KILL:\t\t\t %u\n", - il->isr_stats.ctkill); - - pos += - scnprintf(buf + pos, bufsz - pos, "Wakeup Interrupt:\t\t %u\n", - il->isr_stats.wakeup); - - pos += - scnprintf(buf + pos, bufsz - pos, "Rx command responses:\t\t %u\n", - il->isr_stats.rx); - for (cnt = 0; cnt < IL_CN_MAX; cnt++) { - if (il->isr_stats.handlers[cnt] > 0) - pos += - scnprintf(buf + pos, bufsz - pos, - "\tRx handler[%36s]:\t\t %u\n", - il_get_cmd_string(cnt), - il->isr_stats.handlers[cnt]); - } - - pos += - scnprintf(buf + pos, bufsz - pos, "Tx/FH interrupt:\t\t %u\n", - il->isr_stats.tx); - - pos += - scnprintf(buf + pos, bufsz - pos, "Unexpected INTA:\t\t %u\n", - il->isr_stats.unhandled); - - ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); - kfree(buf); - return ret; -} - -static ssize_t -il_dbgfs_interrupt_write(struct file *file, const char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct il_priv *il = file->private_data; - char buf[8]; - int buf_size; - u32 reset_flag; - - memset(buf, 0, sizeof(buf)); - buf_size = min(count, sizeof(buf) - 1); - if (copy_from_user(buf, user_buf, buf_size)) - return -EFAULT; - if (sscanf(buf, "%x", &reset_flag) != 1) - return -EFAULT; - if (reset_flag == 0) - il_clear_isr_stats(il); - - return count; -} - -static ssize_t -il_dbgfs_qos_read(struct file *file, char __user *user_buf, size_t count, - loff_t *ppos) -{ - struct il_priv *il = file->private_data; - int pos = 0, i; - char buf[256]; - const size_t bufsz = sizeof(buf); - - for (i = 0; i < AC_NUM; i++) { - pos += - scnprintf(buf + pos, bufsz - pos, - "\tcw_min\tcw_max\taifsn\ttxop\n"); - pos += - scnprintf(buf + pos, bufsz - pos, - "AC[%d]\t%u\t%u\t%u\t%u\n", i, - il->qos_data.def_qos_parm.ac[i].cw_min, - il->qos_data.def_qos_parm.ac[i].cw_max, - il->qos_data.def_qos_parm.ac[i].aifsn, - il->qos_data.def_qos_parm.ac[i].edca_txop); - } - - return simple_read_from_buffer(user_buf, count, ppos, buf, pos); -} - -static ssize_t -il_dbgfs_disable_ht40_write(struct file *file, const char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct il_priv *il = file->private_data; - char buf[8]; - int buf_size; - int ht40; - - memset(buf, 0, sizeof(buf)); - buf_size = min(count, sizeof(buf) - 1); - if (copy_from_user(buf, user_buf, buf_size)) - return -EFAULT; - if (sscanf(buf, "%d", &ht40) != 1) - return -EFAULT; - if (!il_is_any_associated(il)) - il->disable_ht40 = ht40 ? true : false; - else { - IL_ERR("Sta associated with AP - " - "Change to 40MHz channel support is not allowed\n"); - return -EINVAL; - } - - return count; -} - -static ssize_t -il_dbgfs_disable_ht40_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct il_priv *il = file->private_data; - char buf[100]; - int pos = 0; - const size_t bufsz = sizeof(buf); - - pos += - scnprintf(buf + pos, bufsz - pos, "11n 40MHz Mode: %s\n", - il->disable_ht40 ? "Disabled" : "Enabled"); - return simple_read_from_buffer(user_buf, count, ppos, buf, pos); -} - -DEBUGFS_READ_WRITE_FILE_OPS(sram); -DEBUGFS_READ_FILE_OPS(nvm); -DEBUGFS_READ_FILE_OPS(stations); -DEBUGFS_READ_FILE_OPS(channels); -DEBUGFS_READ_FILE_OPS(status); -DEBUGFS_READ_WRITE_FILE_OPS(interrupt); -DEBUGFS_READ_FILE_OPS(qos); -DEBUGFS_READ_WRITE_FILE_OPS(disable_ht40); - -static ssize_t -il_dbgfs_tx_queue_read(struct file *file, char __user *user_buf, size_t count, - loff_t *ppos) -{ - - struct il_priv *il = file->private_data; - struct il_tx_queue *txq; - struct il_queue *q; - char *buf; - int pos = 0; - int cnt; - int ret; - const size_t bufsz = - sizeof(char) * 64 * il->cfg->num_of_queues; - - if (!il->txq) { - IL_ERR("txq not ready\n"); - return -EAGAIN; - } - buf = kzalloc(bufsz, GFP_KERNEL); - if (!buf) - return -ENOMEM; - - for (cnt = 0; cnt < il->hw_params.max_txq_num; cnt++) { - txq = &il->txq[cnt]; - q = &txq->q; - pos += - scnprintf(buf + pos, bufsz - pos, - "hwq %.2d: read=%u write=%u stop=%d" - " swq_id=%#.2x (ac %d/hwq %d)\n", cnt, - q->read_ptr, q->write_ptr, - !!test_bit(cnt, il->queue_stopped), - txq->swq_id, txq->swq_id & 3, - (txq->swq_id >> 2) & 0x1f); - if (cnt >= 4) - continue; - /* for the ACs, display the stop count too */ - pos += - scnprintf(buf + pos, bufsz - pos, - " stop-count: %d\n", - atomic_read(&il->queue_stop_count[cnt])); - } - ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); - kfree(buf); - return ret; -} - -static ssize_t -il_dbgfs_rx_queue_read(struct file *file, char __user *user_buf, size_t count, - loff_t *ppos) -{ - - struct il_priv *il = file->private_data; - struct il_rx_queue *rxq = &il->rxq; - char buf[256]; - int pos = 0; - const size_t bufsz = sizeof(buf); - - pos += scnprintf(buf + pos, bufsz - pos, "read: %u\n", rxq->read); - pos += scnprintf(buf + pos, bufsz - pos, "write: %u\n", rxq->write); - pos += - scnprintf(buf + pos, bufsz - pos, "free_count: %u\n", - rxq->free_count); - if (rxq->rb_stts) { - pos += - scnprintf(buf + pos, bufsz - pos, "closed_rb_num: %u\n", - le16_to_cpu(rxq->rb_stts-> - closed_rb_num) & 0x0FFF); - } else { - pos += - scnprintf(buf + pos, bufsz - pos, - "closed_rb_num: Not Allocated\n"); - } - return simple_read_from_buffer(user_buf, count, ppos, buf, pos); -} - -static ssize_t -il_dbgfs_ucode_rx_stats_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct il_priv *il = file->private_data; - - return il->debugfs_ops->rx_stats_read(file, user_buf, count, ppos); -} - -static ssize_t -il_dbgfs_ucode_tx_stats_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct il_priv *il = file->private_data; - - return il->debugfs_ops->tx_stats_read(file, user_buf, count, ppos); -} - -static ssize_t -il_dbgfs_ucode_general_stats_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct il_priv *il = file->private_data; - - return il->debugfs_ops->general_stats_read(file, user_buf, count, ppos); -} - -static ssize_t -il_dbgfs_sensitivity_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - - struct il_priv *il = file->private_data; - int pos = 0; - int cnt = 0; - char *buf; - int bufsz = sizeof(struct il_sensitivity_data) * 4 + 100; - ssize_t ret; - struct il_sensitivity_data *data; - - data = &il->sensitivity_data; - buf = kzalloc(bufsz, GFP_KERNEL); - if (!buf) { - IL_ERR("Can not allocate Buffer\n"); - return -ENOMEM; - } - - pos += - scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm:\t\t\t %u\n", - data->auto_corr_ofdm); - pos += - scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm_mrc:\t\t %u\n", - data->auto_corr_ofdm_mrc); - pos += - scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm_x1:\t\t %u\n", - data->auto_corr_ofdm_x1); - pos += - scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm_mrc_x1:\t\t %u\n", - data->auto_corr_ofdm_mrc_x1); - pos += - scnprintf(buf + pos, bufsz - pos, "auto_corr_cck:\t\t\t %u\n", - data->auto_corr_cck); - pos += - scnprintf(buf + pos, bufsz - pos, "auto_corr_cck_mrc:\t\t %u\n", - data->auto_corr_cck_mrc); - pos += - scnprintf(buf + pos, bufsz - pos, - "last_bad_plcp_cnt_ofdm:\t\t %u\n", - data->last_bad_plcp_cnt_ofdm); - pos += - scnprintf(buf + pos, bufsz - pos, "last_fa_cnt_ofdm:\t\t %u\n", - data->last_fa_cnt_ofdm); - pos += - scnprintf(buf + pos, bufsz - pos, "last_bad_plcp_cnt_cck:\t\t %u\n", - data->last_bad_plcp_cnt_cck); - pos += - scnprintf(buf + pos, bufsz - pos, "last_fa_cnt_cck:\t\t %u\n", - data->last_fa_cnt_cck); - pos += - scnprintf(buf + pos, bufsz - pos, "nrg_curr_state:\t\t\t %u\n", - data->nrg_curr_state); - pos += - scnprintf(buf + pos, bufsz - pos, "nrg_prev_state:\t\t\t %u\n", - data->nrg_prev_state); - pos += scnprintf(buf + pos, bufsz - pos, "nrg_value:\t\t\t"); - for (cnt = 0; cnt < 10; cnt++) { - pos += - scnprintf(buf + pos, bufsz - pos, " %u", - data->nrg_value[cnt]); - } - pos += scnprintf(buf + pos, bufsz - pos, "\n"); - pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_rssi:\t\t"); - for (cnt = 0; cnt < NRG_NUM_PREV_STAT_L; cnt++) { - pos += - scnprintf(buf + pos, bufsz - pos, " %u", - data->nrg_silence_rssi[cnt]); - } - pos += scnprintf(buf + pos, bufsz - pos, "\n"); - pos += - scnprintf(buf + pos, bufsz - pos, "nrg_silence_ref:\t\t %u\n", - data->nrg_silence_ref); - pos += - scnprintf(buf + pos, bufsz - pos, "nrg_energy_idx:\t\t\t %u\n", - data->nrg_energy_idx); - pos += - scnprintf(buf + pos, bufsz - pos, "nrg_silence_idx:\t\t %u\n", - data->nrg_silence_idx); - pos += - scnprintf(buf + pos, bufsz - pos, "nrg_th_cck:\t\t\t %u\n", - data->nrg_th_cck); - pos += - scnprintf(buf + pos, bufsz - pos, - "nrg_auto_corr_silence_diff:\t %u\n", - data->nrg_auto_corr_silence_diff); - pos += - scnprintf(buf + pos, bufsz - pos, "num_in_cck_no_fa:\t\t %u\n", - data->num_in_cck_no_fa); - pos += - scnprintf(buf + pos, bufsz - pos, "nrg_th_ofdm:\t\t\t %u\n", - data->nrg_th_ofdm); - - ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); - kfree(buf); - return ret; -} - -static ssize_t -il_dbgfs_chain_noise_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - - struct il_priv *il = file->private_data; - int pos = 0; - int cnt = 0; - char *buf; - int bufsz = sizeof(struct il_chain_noise_data) * 4 + 100; - ssize_t ret; - struct il_chain_noise_data *data; - - data = &il->chain_noise_data; - buf = kzalloc(bufsz, GFP_KERNEL); - if (!buf) { - IL_ERR("Can not allocate Buffer\n"); - return -ENOMEM; - } - - pos += - scnprintf(buf + pos, bufsz - pos, "active_chains:\t\t\t %u\n", - data->active_chains); - pos += - scnprintf(buf + pos, bufsz - pos, "chain_noise_a:\t\t\t %u\n", - data->chain_noise_a); - pos += - scnprintf(buf + pos, bufsz - pos, "chain_noise_b:\t\t\t %u\n", - data->chain_noise_b); - pos += - scnprintf(buf + pos, bufsz - pos, "chain_noise_c:\t\t\t %u\n", - data->chain_noise_c); - pos += - scnprintf(buf + pos, bufsz - pos, "chain_signal_a:\t\t\t %u\n", - data->chain_signal_a); - pos += - scnprintf(buf + pos, bufsz - pos, "chain_signal_b:\t\t\t %u\n", - data->chain_signal_b); - pos += - scnprintf(buf + pos, bufsz - pos, "chain_signal_c:\t\t\t %u\n", - data->chain_signal_c); - pos += - scnprintf(buf + pos, bufsz - pos, "beacon_count:\t\t\t %u\n", - data->beacon_count); - - pos += scnprintf(buf + pos, bufsz - pos, "disconn_array:\t\t\t"); - for (cnt = 0; cnt < NUM_RX_CHAINS; cnt++) { - pos += - scnprintf(buf + pos, bufsz - pos, " %u", - data->disconn_array[cnt]); - } - pos += scnprintf(buf + pos, bufsz - pos, "\n"); - pos += scnprintf(buf + pos, bufsz - pos, "delta_gain_code:\t\t"); - for (cnt = 0; cnt < NUM_RX_CHAINS; cnt++) { - pos += - scnprintf(buf + pos, bufsz - pos, " %u", - data->delta_gain_code[cnt]); - } - pos += scnprintf(buf + pos, bufsz - pos, "\n"); - pos += - scnprintf(buf + pos, bufsz - pos, "radio_write:\t\t\t %u\n", - data->radio_write); - pos += - scnprintf(buf + pos, bufsz - pos, "state:\t\t\t\t %u\n", - data->state); - - ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); - kfree(buf); - return ret; -} - -static ssize_t -il_dbgfs_power_save_status_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct il_priv *il = file->private_data; - char buf[60]; - int pos = 0; - const size_t bufsz = sizeof(buf); - u32 pwrsave_status; - - pwrsave_status = - _il_rd(il, CSR_GP_CNTRL) & CSR_GP_REG_POWER_SAVE_STATUS_MSK; - - pos += scnprintf(buf + pos, bufsz - pos, "Power Save Status: "); - pos += - scnprintf(buf + pos, bufsz - pos, "%s\n", - (pwrsave_status == CSR_GP_REG_NO_POWER_SAVE) ? "none" : - (pwrsave_status == CSR_GP_REG_MAC_POWER_SAVE) ? "MAC" : - (pwrsave_status == CSR_GP_REG_PHY_POWER_SAVE) ? "PHY" : - "error"); - - return simple_read_from_buffer(user_buf, count, ppos, buf, pos); -} - -static ssize_t -il_dbgfs_clear_ucode_stats_write(struct file *file, - const char __user *user_buf, size_t count, - loff_t *ppos) -{ - struct il_priv *il = file->private_data; - char buf[8]; - int buf_size; - int clear; - - memset(buf, 0, sizeof(buf)); - buf_size = min(count, sizeof(buf) - 1); - if (copy_from_user(buf, user_buf, buf_size)) - return -EFAULT; - if (sscanf(buf, "%d", &clear) != 1) - return -EFAULT; - - /* make request to uCode to retrieve stats information */ - mutex_lock(&il->mutex); - il_send_stats_request(il, CMD_SYNC, true); - mutex_unlock(&il->mutex); - - return count; -} - -static ssize_t -il_dbgfs_rxon_flags_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - - struct il_priv *il = file->private_data; - int len = 0; - char buf[20]; - - len = sprintf(buf, "0x%04X\n", le32_to_cpu(il->active.flags)); - return simple_read_from_buffer(user_buf, count, ppos, buf, len); -} - -static ssize_t -il_dbgfs_rxon_filter_flags_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - - struct il_priv *il = file->private_data; - int len = 0; - char buf[20]; - - len = - sprintf(buf, "0x%04X\n", le32_to_cpu(il->active.filter_flags)); - return simple_read_from_buffer(user_buf, count, ppos, buf, len); -} - -static ssize_t -il_dbgfs_fh_reg_read(struct file *file, char __user *user_buf, size_t count, - loff_t *ppos) -{ - struct il_priv *il = file->private_data; - char *buf; - int pos = 0; - ssize_t ret = -EFAULT; - - if (il->ops->dump_fh) { - ret = pos = il->ops->dump_fh(il, &buf, true); - if (buf) { - ret = - simple_read_from_buffer(user_buf, count, ppos, buf, - pos); - kfree(buf); - } - } - - return ret; -} - -static ssize_t -il_dbgfs_missed_beacon_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - - struct il_priv *il = file->private_data; - int pos = 0; - char buf[12]; - const size_t bufsz = sizeof(buf); - - pos += - scnprintf(buf + pos, bufsz - pos, "%d\n", - il->missed_beacon_threshold); - - return simple_read_from_buffer(user_buf, count, ppos, buf, pos); -} - -static ssize_t -il_dbgfs_missed_beacon_write(struct file *file, const char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct il_priv *il = file->private_data; - char buf[8]; - int buf_size; - int missed; - - memset(buf, 0, sizeof(buf)); - buf_size = min(count, sizeof(buf) - 1); - if (copy_from_user(buf, user_buf, buf_size)) - return -EFAULT; - if (sscanf(buf, "%d", &missed) != 1) - return -EINVAL; - - if (missed < IL_MISSED_BEACON_THRESHOLD_MIN || - missed > IL_MISSED_BEACON_THRESHOLD_MAX) - il->missed_beacon_threshold = IL_MISSED_BEACON_THRESHOLD_DEF; - else - il->missed_beacon_threshold = missed; - - return count; -} - -static ssize_t -il_dbgfs_force_reset_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - - struct il_priv *il = file->private_data; - int pos = 0; - char buf[300]; - const size_t bufsz = sizeof(buf); - struct il_force_reset *force_reset; - - force_reset = &il->force_reset; - - pos += - scnprintf(buf + pos, bufsz - pos, "\tnumber of reset request: %d\n", - force_reset->reset_request_count); - pos += - scnprintf(buf + pos, bufsz - pos, - "\tnumber of reset request success: %d\n", - force_reset->reset_success_count); - pos += - scnprintf(buf + pos, bufsz - pos, - "\tnumber of reset request reject: %d\n", - force_reset->reset_reject_count); - pos += - scnprintf(buf + pos, bufsz - pos, "\treset duration: %lu\n", - force_reset->reset_duration); - - return simple_read_from_buffer(user_buf, count, ppos, buf, pos); -} - -static ssize_t -il_dbgfs_force_reset_write(struct file *file, const char __user *user_buf, - size_t count, loff_t *ppos) -{ - - int ret; - struct il_priv *il = file->private_data; - - ret = il_force_reset(il, true); - - return ret ? ret : count; -} - -static ssize_t -il_dbgfs_wd_timeout_write(struct file *file, const char __user *user_buf, - size_t count, loff_t *ppos) -{ - - struct il_priv *il = file->private_data; - char buf[8]; - int buf_size; - int timeout; - - memset(buf, 0, sizeof(buf)); - buf_size = min(count, sizeof(buf) - 1); - if (copy_from_user(buf, user_buf, buf_size)) - return -EFAULT; - if (sscanf(buf, "%d", &timeout) != 1) - return -EINVAL; - if (timeout < 0 || timeout > IL_MAX_WD_TIMEOUT) - timeout = IL_DEF_WD_TIMEOUT; - - il->cfg->wd_timeout = timeout; - il_setup_watchdog(il); - return count; -} - -DEBUGFS_READ_FILE_OPS(rx_stats); -DEBUGFS_READ_FILE_OPS(tx_stats); -DEBUGFS_READ_FILE_OPS(rx_queue); -DEBUGFS_READ_FILE_OPS(tx_queue); -DEBUGFS_READ_FILE_OPS(ucode_rx_stats); -DEBUGFS_READ_FILE_OPS(ucode_tx_stats); -DEBUGFS_READ_FILE_OPS(ucode_general_stats); -DEBUGFS_READ_FILE_OPS(sensitivity); -DEBUGFS_READ_FILE_OPS(chain_noise); -DEBUGFS_READ_FILE_OPS(power_save_status); -DEBUGFS_WRITE_FILE_OPS(clear_ucode_stats); -DEBUGFS_WRITE_FILE_OPS(clear_traffic_stats); -DEBUGFS_READ_FILE_OPS(fh_reg); -DEBUGFS_READ_WRITE_FILE_OPS(missed_beacon); -DEBUGFS_READ_WRITE_FILE_OPS(force_reset); -DEBUGFS_READ_FILE_OPS(rxon_flags); -DEBUGFS_READ_FILE_OPS(rxon_filter_flags); -DEBUGFS_WRITE_FILE_OPS(wd_timeout); - -/* - * Create the debugfs files and directories - * - */ -int -il_dbgfs_register(struct il_priv *il, const char *name) -{ - struct dentry *phyd = il->hw->wiphy->debugfsdir; - struct dentry *dir_drv, *dir_data, *dir_rf, *dir_debug; - - dir_drv = debugfs_create_dir(name, phyd); - if (!dir_drv) - return -ENOMEM; - - il->debugfs_dir = dir_drv; - - dir_data = debugfs_create_dir("data", dir_drv); - if (!dir_data) - goto err; - dir_rf = debugfs_create_dir("rf", dir_drv); - if (!dir_rf) - goto err; - dir_debug = debugfs_create_dir("debug", dir_drv); - if (!dir_debug) - goto err; - - DEBUGFS_ADD_FILE(nvm, dir_data, S_IRUSR); - DEBUGFS_ADD_FILE(sram, dir_data, S_IWUSR | S_IRUSR); - DEBUGFS_ADD_FILE(stations, dir_data, S_IRUSR); - DEBUGFS_ADD_FILE(channels, dir_data, S_IRUSR); - DEBUGFS_ADD_FILE(status, dir_data, S_IRUSR); - DEBUGFS_ADD_FILE(interrupt, dir_data, S_IWUSR | S_IRUSR); - DEBUGFS_ADD_FILE(qos, dir_data, S_IRUSR); - DEBUGFS_ADD_FILE(disable_ht40, dir_data, S_IWUSR | S_IRUSR); - DEBUGFS_ADD_FILE(rx_stats, dir_debug, S_IRUSR); - DEBUGFS_ADD_FILE(tx_stats, dir_debug, S_IRUSR); - DEBUGFS_ADD_FILE(rx_queue, dir_debug, S_IRUSR); - DEBUGFS_ADD_FILE(tx_queue, dir_debug, S_IRUSR); - DEBUGFS_ADD_FILE(power_save_status, dir_debug, S_IRUSR); - DEBUGFS_ADD_FILE(clear_ucode_stats, dir_debug, S_IWUSR); - DEBUGFS_ADD_FILE(clear_traffic_stats, dir_debug, S_IWUSR); - DEBUGFS_ADD_FILE(fh_reg, dir_debug, S_IRUSR); - DEBUGFS_ADD_FILE(missed_beacon, dir_debug, S_IWUSR); - DEBUGFS_ADD_FILE(force_reset, dir_debug, S_IWUSR | S_IRUSR); - DEBUGFS_ADD_FILE(ucode_rx_stats, dir_debug, S_IRUSR); - DEBUGFS_ADD_FILE(ucode_tx_stats, dir_debug, S_IRUSR); - DEBUGFS_ADD_FILE(ucode_general_stats, dir_debug, S_IRUSR); - - if (il->cfg->sensitivity_calib_by_driver) - DEBUGFS_ADD_FILE(sensitivity, dir_debug, S_IRUSR); - if (il->cfg->chain_noise_calib_by_driver) - DEBUGFS_ADD_FILE(chain_noise, dir_debug, S_IRUSR); - DEBUGFS_ADD_FILE(rxon_flags, dir_debug, S_IWUSR); - DEBUGFS_ADD_FILE(rxon_filter_flags, dir_debug, S_IWUSR); - DEBUGFS_ADD_FILE(wd_timeout, dir_debug, S_IWUSR); - if (il->cfg->sensitivity_calib_by_driver) - DEBUGFS_ADD_BOOL(disable_sensitivity, dir_rf, - &il->disable_sens_cal); - if (il->cfg->chain_noise_calib_by_driver) - DEBUGFS_ADD_BOOL(disable_chain_noise, dir_rf, - &il->disable_chain_noise_cal); - DEBUGFS_ADD_BOOL(disable_tx_power, dir_rf, &il->disable_tx_power_cal); - return 0; - -err: - IL_ERR("Can't create the debugfs directory\n"); - il_dbgfs_unregister(il); - return -ENOMEM; -} -EXPORT_SYMBOL(il_dbgfs_register); - -/** - * Remove the debugfs files and directories - * - */ -void -il_dbgfs_unregister(struct il_priv *il) -{ - if (!il->debugfs_dir) - return; - - debugfs_remove_recursive(il->debugfs_dir); - il->debugfs_dir = NULL; -} -EXPORT_SYMBOL(il_dbgfs_unregister); diff --git a/drivers/net/wireless/iwlegacy/iwl-spectrum.h b/drivers/net/wireless/iwlegacy/iwl-spectrum.h deleted file mode 100644 index 85fe48e520f9..000000000000 --- a/drivers/net/wireless/iwlegacy/iwl-spectrum.h +++ /dev/null @@ -1,92 +0,0 @@ -/****************************************************************************** - * - * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved. - * - * Portions of this file are derived from the ieee80211 subsystem header files. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA - * - * The full GNU General Public License is included in this distribution in the - * file called LICENSE. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - *****************************************************************************/ - -#ifndef __il_spectrum_h__ -#define __il_spectrum_h__ -enum { /* ieee80211_basic_report.map */ - IEEE80211_BASIC_MAP_BSS = (1 << 0), - IEEE80211_BASIC_MAP_OFDM = (1 << 1), - IEEE80211_BASIC_MAP_UNIDENTIFIED = (1 << 2), - IEEE80211_BASIC_MAP_RADAR = (1 << 3), - IEEE80211_BASIC_MAP_UNMEASURED = (1 << 4), - /* Bits 5-7 are reserved */ - -}; -struct ieee80211_basic_report { - u8 channel; - __le64 start_time; - __le16 duration; - u8 map; -} __packed; - -enum { /* ieee80211_measurement_request.mode */ - /* Bit 0 is reserved */ - IEEE80211_MEASUREMENT_ENABLE = (1 << 1), - IEEE80211_MEASUREMENT_REQUEST = (1 << 2), - IEEE80211_MEASUREMENT_REPORT = (1 << 3), - /* Bits 4-7 are reserved */ -}; - -enum { - IEEE80211_REPORT_BASIC = 0, /* required */ - IEEE80211_REPORT_CCA = 1, /* optional */ - IEEE80211_REPORT_RPI = 2, /* optional */ - /* 3-255 reserved */ -}; - -struct ieee80211_measurement_params { - u8 channel; - __le64 start_time; - __le16 duration; -} __packed; - -struct ieee80211_info_element { - u8 id; - u8 len; - u8 data[0]; -} __packed; - -struct ieee80211_measurement_request { - struct ieee80211_info_element ie; - u8 token; - u8 mode; - u8 type; - struct ieee80211_measurement_params params[0]; -} __packed; - -struct ieee80211_measurement_report { - struct ieee80211_info_element ie; - u8 token; - u8 mode; - u8 type; - union { - struct ieee80211_basic_report basic[0]; - } u; -} __packed; - -#endif diff --git a/drivers/net/wireless/iwlegacy/prph.h b/drivers/net/wireless/iwlegacy/prph.h deleted file mode 100644 index ffec4b4a248a..000000000000 --- a/drivers/net/wireless/iwlegacy/prph.h +++ /dev/null @@ -1,522 +0,0 @@ -/****************************************************************************** - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, - * USA - * - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - * BSD LICENSE - * - * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - *****************************************************************************/ - -#ifndef __il_prph_h__ -#define __il_prph_h__ - -/* - * Registers in this file are internal, not PCI bus memory mapped. - * Driver accesses these via HBUS_TARG_PRPH_* registers. - */ -#define PRPH_BASE (0x00000) -#define PRPH_END (0xFFFFF) - -/* APMG (power management) constants */ -#define APMG_BASE (PRPH_BASE + 0x3000) -#define APMG_CLK_CTRL_REG (APMG_BASE + 0x0000) -#define APMG_CLK_EN_REG (APMG_BASE + 0x0004) -#define APMG_CLK_DIS_REG (APMG_BASE + 0x0008) -#define APMG_PS_CTRL_REG (APMG_BASE + 0x000c) -#define APMG_PCIDEV_STT_REG (APMG_BASE + 0x0010) -#define APMG_RFKILL_REG (APMG_BASE + 0x0014) -#define APMG_RTC_INT_STT_REG (APMG_BASE + 0x001c) -#define APMG_RTC_INT_MSK_REG (APMG_BASE + 0x0020) -#define APMG_DIGITAL_SVR_REG (APMG_BASE + 0x0058) -#define APMG_ANALOG_SVR_REG (APMG_BASE + 0x006C) - -#define APMS_CLK_VAL_MRB_FUNC_MODE (0x00000001) -#define APMG_CLK_VAL_DMA_CLK_RQT (0x00000200) -#define APMG_CLK_VAL_BSM_CLK_RQT (0x00000800) - -#define APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS (0x00400000) -#define APMG_PS_CTRL_VAL_RESET_REQ (0x04000000) -#define APMG_PS_CTRL_MSK_PWR_SRC (0x03000000) -#define APMG_PS_CTRL_VAL_PWR_SRC_VMAIN (0x00000000) -#define APMG_PS_CTRL_VAL_PWR_SRC_MAX (0x01000000) /* 3945 only */ -#define APMG_PS_CTRL_VAL_PWR_SRC_VAUX (0x02000000) -#define APMG_SVR_VOLTAGE_CONFIG_BIT_MSK (0x000001E0) /* bit 8:5 */ -#define APMG_SVR_DIGITAL_VOLTAGE_1_32 (0x00000060) - -#define APMG_PCIDEV_STT_VAL_L1_ACT_DIS (0x00000800) - -/** - * BSM (Bootstrap State Machine) - * - * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program - * in special SRAM that does not power down when the embedded control - * processor is sleeping (e.g. for periodic power-saving shutdowns of radio). - * - * When powering back up after sleeps (or during initial uCode load), the BSM - * internally loads the short bootstrap program from the special SRAM into the - * embedded processor's instruction SRAM, and starts the processor so it runs - * the bootstrap program. - * - * This bootstrap program loads (via PCI busmaster DMA) instructions and data - * images for a uCode program from host DRAM locations. The host driver - * indicates DRAM locations and sizes for instruction and data images via the - * four BSM_DRAM_* registers. Once the bootstrap program loads the new program, - * the new program starts automatically. - * - * The uCode used for open-source drivers includes two programs: - * - * 1) Initialization -- performs hardware calibration and sets up some - * internal data, then notifies host via "initialize alive" notification - * (struct il_init_alive_resp) that it has completed all of its work. - * After signal from host, it then loads and starts the runtime program. - * The initialization program must be used when initially setting up the - * NIC after loading the driver. - * - * 2) Runtime/Protocol -- performs all normal runtime operations. This - * notifies host via "alive" notification (struct il_alive_resp) that it - * is ready to be used. - * - * When initializing the NIC, the host driver does the following procedure: - * - * 1) Load bootstrap program (instructions only, no data image for bootstrap) - * into bootstrap memory. Use dword writes starting at BSM_SRAM_LOWER_BOUND - * - * 2) Point (via BSM_DRAM_*) to the "initialize" uCode data and instruction - * images in host DRAM. - * - * 3) Set up BSM to copy from BSM SRAM into uCode instruction SRAM when asked: - * BSM_WR_MEM_SRC_REG = 0 - * BSM_WR_MEM_DST_REG = RTC_INST_LOWER_BOUND - * BSM_WR_MEM_DWCOUNT_REG = # dwords in bootstrap instruction image - * - * 4) Load bootstrap into instruction SRAM: - * BSM_WR_CTRL_REG = BSM_WR_CTRL_REG_BIT_START - * - * 5) Wait for load completion: - * Poll BSM_WR_CTRL_REG for BSM_WR_CTRL_REG_BIT_START = 0 - * - * 6) Enable future boot loads whenever NIC's power management triggers it: - * BSM_WR_CTRL_REG = BSM_WR_CTRL_REG_BIT_START_EN - * - * 7) Start the NIC by removing all reset bits: - * CSR_RESET = 0 - * - * The bootstrap uCode (already in instruction SRAM) loads initialization - * uCode. Initialization uCode performs data initialization, sends - * "initialize alive" notification to host, and waits for a signal from - * host to load runtime code. - * - * 4) Point (via BSM_DRAM_*) to the "runtime" uCode data and instruction - * images in host DRAM. The last register loaded must be the instruction - * byte count register ("1" in MSbit tells initialization uCode to load - * the runtime uCode): - * BSM_DRAM_INST_BYTECOUNT_REG = byte count | BSM_DRAM_INST_LOAD - * - * 5) Wait for "alive" notification, then issue normal runtime commands. - * - * Data caching during power-downs: - * - * Just before the embedded controller powers down (e.g for automatic - * power-saving modes, or for RFKILL), uCode stores (via PCI busmaster DMA) - * a current snapshot of the embedded processor's data SRAM into host DRAM. - * This caches the data while the embedded processor's memory is powered down. - * Location and size are controlled by BSM_DRAM_DATA_* registers. - * - * NOTE: Instruction SRAM does not need to be saved, since that doesn't - * change during operation; the original image (from uCode distribution - * file) can be used for reload. - * - * When powering back up, the BSM loads the bootstrap program. Bootstrap looks - * at the BSM_DRAM_* registers, which now point to the runtime instruction - * image and the cached (modified) runtime data (*not* the initialization - * uCode). Bootstrap reloads these runtime images into SRAM, and restarts the - * uCode from where it left off before the power-down. - * - * NOTE: Initialization uCode does *not* run as part of the save/restore - * procedure. - * - * This save/restore method is mostly for autonomous power management during - * normal operation (result of C_POWER_TBL). Platform suspend/resume and - * RFKILL should use complete restarts (with total re-initialization) of uCode, - * allowing total shutdown (including BSM memory). - * - * Note that, during normal operation, the host DRAM that held the initial - * startup data for the runtime code is now being used as a backup data cache - * for modified data! If you need to completely re-initialize the NIC, make - * sure that you use the runtime data image from the uCode distribution file, - * not the modified/saved runtime data. You may want to store a separate - * "clean" runtime data image in DRAM to avoid disk reads of distribution file. - */ - -/* BSM bit fields */ -#define BSM_WR_CTRL_REG_BIT_START (0x80000000) /* start boot load now */ -#define BSM_WR_CTRL_REG_BIT_START_EN (0x40000000) /* enable boot after pwrup */ -#define BSM_DRAM_INST_LOAD (0x80000000) /* start program load now */ - -/* BSM addresses */ -#define BSM_BASE (PRPH_BASE + 0x3400) -#define BSM_END (PRPH_BASE + 0x3800) - -#define BSM_WR_CTRL_REG (BSM_BASE + 0x000) /* ctl and status */ -#define BSM_WR_MEM_SRC_REG (BSM_BASE + 0x004) /* source in BSM mem */ -#define BSM_WR_MEM_DST_REG (BSM_BASE + 0x008) /* dest in SRAM mem */ -#define BSM_WR_DWCOUNT_REG (BSM_BASE + 0x00C) /* bytes */ -#define BSM_WR_STATUS_REG (BSM_BASE + 0x010) /* bit 0: 1 == done */ - -/* - * Pointers and size regs for bootstrap load and data SRAM save/restore. - * NOTE: 3945 pointers use bits 31:0 of DRAM address. - * 4965 pointers use bits 35:4 of DRAM address. - */ -#define BSM_DRAM_INST_PTR_REG (BSM_BASE + 0x090) -#define BSM_DRAM_INST_BYTECOUNT_REG (BSM_BASE + 0x094) -#define BSM_DRAM_DATA_PTR_REG (BSM_BASE + 0x098) -#define BSM_DRAM_DATA_BYTECOUNT_REG (BSM_BASE + 0x09C) - -/* - * BSM special memory, stays powered on during power-save sleeps. - * Read/write, address range from LOWER_BOUND to (LOWER_BOUND + SIZE -1) - */ -#define BSM_SRAM_LOWER_BOUND (PRPH_BASE + 0x3800) -#define BSM_SRAM_SIZE (1024) /* bytes */ - -/* 3945 Tx scheduler registers */ -#define ALM_SCD_BASE (PRPH_BASE + 0x2E00) -#define ALM_SCD_MODE_REG (ALM_SCD_BASE + 0x000) -#define ALM_SCD_ARASTAT_REG (ALM_SCD_BASE + 0x004) -#define ALM_SCD_TXFACT_REG (ALM_SCD_BASE + 0x010) -#define ALM_SCD_TXF4MF_REG (ALM_SCD_BASE + 0x014) -#define ALM_SCD_TXF5MF_REG (ALM_SCD_BASE + 0x020) -#define ALM_SCD_SBYP_MODE_1_REG (ALM_SCD_BASE + 0x02C) -#define ALM_SCD_SBYP_MODE_2_REG (ALM_SCD_BASE + 0x030) - -/** - * Tx Scheduler - * - * The Tx Scheduler selects the next frame to be transmitted, choosing TFDs - * (Transmit Frame Descriptors) from up to 16 circular Tx queues resident in - * host DRAM. It steers each frame's Tx command (which contains the frame - * data) into one of up to 7 prioritized Tx DMA FIFO channels within the - * device. A queue maps to only one (selectable by driver) Tx DMA channel, - * but one DMA channel may take input from several queues. - * - * Tx DMA FIFOs have dedicated purposes. For 4965, they are used as follows - * (cf. default_queue_to_tx_fifo in 4965.c): - * - * 0 -- EDCA BK (background) frames, lowest priority - * 1 -- EDCA BE (best effort) frames, normal priority - * 2 -- EDCA VI (video) frames, higher priority - * 3 -- EDCA VO (voice) and management frames, highest priority - * 4 -- Commands (e.g. RXON, etc.) - * 5 -- unused (HCCA) - * 6 -- unused (HCCA) - * 7 -- not used by driver (device-internal only) - * - * - * Driver should normally map queues 0-6 to Tx DMA/FIFO channels 0-6. - * In addition, driver can map the remaining queues to Tx DMA/FIFO - * channels 0-3 to support 11n aggregation via EDCA DMA channels. - * - * The driver sets up each queue to work in one of two modes: - * - * 1) Scheduler-Ack, in which the scheduler automatically supports a - * block-ack (BA) win of up to 64 TFDs. In this mode, each queue - * contains TFDs for a unique combination of Recipient Address (RA) - * and Traffic Identifier (TID), that is, traffic of a given - * Quality-Of-Service (QOS) priority, destined for a single station. - * - * In scheduler-ack mode, the scheduler keeps track of the Tx status of - * each frame within the BA win, including whether it's been transmitted, - * and whether it's been acknowledged by the receiving station. The device - * automatically processes block-acks received from the receiving STA, - * and reschedules un-acked frames to be retransmitted (successful - * Tx completion may end up being out-of-order). - * - * The driver must maintain the queue's Byte Count table in host DRAM - * (struct il4965_sched_queue_byte_cnt_tbl) for this mode. - * This mode does not support fragmentation. - * - * 2) FIFO (a.k.a. non-Scheduler-ACK), in which each TFD is processed in order. - * The device may automatically retry Tx, but will retry only one frame - * at a time, until receiving ACK from receiving station, or reaching - * retry limit and giving up. - * - * The command queue (#4/#9) must use this mode! - * This mode does not require use of the Byte Count table in host DRAM. - * - * Driver controls scheduler operation via 3 means: - * 1) Scheduler registers - * 2) Shared scheduler data base in internal 4956 SRAM - * 3) Shared data in host DRAM - * - * Initialization: - * - * When loading, driver should allocate memory for: - * 1) 16 TFD circular buffers, each with space for (typically) 256 TFDs. - * 2) 16 Byte Count circular buffers in 16 KBytes contiguous memory - * (1024 bytes for each queue). - * - * After receiving "Alive" response from uCode, driver must initialize - * the scheduler (especially for queue #4/#9, the command queue, otherwise - * the driver can't issue commands!): - */ - -/** - * Max Tx win size is the max number of contiguous TFDs that the scheduler - * can keep track of at one time when creating block-ack chains of frames. - * Note that "64" matches the number of ack bits in a block-ack packet. - * Driver should use SCD_WIN_SIZE and SCD_FRAME_LIMIT values to initialize - * IL49_SCD_CONTEXT_QUEUE_OFFSET(x) values. - */ -#define SCD_WIN_SIZE 64 -#define SCD_FRAME_LIMIT 64 - -/* SCD registers are internal, must be accessed via HBUS_TARG_PRPH regs */ -#define IL49_SCD_START_OFFSET 0xa02c00 - -/* - * 4965 tells driver SRAM address for internal scheduler structs via this reg. - * Value is valid only after "Alive" response from uCode. - */ -#define IL49_SCD_SRAM_BASE_ADDR (IL49_SCD_START_OFFSET + 0x0) - -/* - * Driver may need to update queue-empty bits after changing queue's - * write and read pointers (idxes) during (re-)initialization (i.e. when - * scheduler is not tracking what's happening). - * Bit fields: - * 31-16: Write mask -- 1: update empty bit, 0: don't change empty bit - * 15-00: Empty state, one for each queue -- 1: empty, 0: non-empty - * NOTE: This register is not used by Linux driver. - */ -#define IL49_SCD_EMPTY_BITS (IL49_SCD_START_OFFSET + 0x4) - -/* - * Physical base address of array of byte count (BC) circular buffers (CBs). - * Each Tx queue has a BC CB in host DRAM to support Scheduler-ACK mode. - * This register points to BC CB for queue 0, must be on 1024-byte boundary. - * Others are spaced by 1024 bytes. - * Each BC CB is 2 bytes * (256 + 64) = 740 bytes, followed by 384 bytes pad. - * (Index into a queue's BC CB) = (idx into queue's TFD CB) = (SSN & 0xff). - * Bit fields: - * 25-00: Byte Count CB physical address [35:10], must be 1024-byte aligned. - */ -#define IL49_SCD_DRAM_BASE_ADDR (IL49_SCD_START_OFFSET + 0x10) - -/* - * Enables any/all Tx DMA/FIFO channels. - * Scheduler generates requests for only the active channels. - * Set this to 0xff to enable all 8 channels (normal usage). - * Bit fields: - * 7- 0: Enable (1), disable (0), one bit for each channel 0-7 - */ -#define IL49_SCD_TXFACT (IL49_SCD_START_OFFSET + 0x1c) -/* - * Queue (x) Write Pointers (idxes, really!), one for each Tx queue. - * Initialized and updated by driver as new TFDs are added to queue. - * NOTE: If using Block Ack, idx must correspond to frame's - * Start Sequence Number; idx = (SSN & 0xff) - * NOTE: Alternative to HBUS_TARG_WRPTR, which is what Linux driver uses? - */ -#define IL49_SCD_QUEUE_WRPTR(x) (IL49_SCD_START_OFFSET + 0x24 + (x) * 4) - -/* - * Queue (x) Read Pointers (idxes, really!), one for each Tx queue. - * For FIFO mode, idx indicates next frame to transmit. - * For Scheduler-ACK mode, idx indicates first frame in Tx win. - * Initialized by driver, updated by scheduler. - */ -#define IL49_SCD_QUEUE_RDPTR(x) (IL49_SCD_START_OFFSET + 0x64 + (x) * 4) - -/* - * Select which queues work in chain mode (1) vs. not (0). - * Use chain mode to build chains of aggregated frames. - * Bit fields: - * 31-16: Reserved - * 15-00: Mode, one bit for each queue -- 1: Chain mode, 0: one-at-a-time - * NOTE: If driver sets up queue for chain mode, it should be also set up - * Scheduler-ACK mode as well, via SCD_QUEUE_STATUS_BITS(x). - */ -#define IL49_SCD_QUEUECHAIN_SEL (IL49_SCD_START_OFFSET + 0xd0) - -/* - * Select which queues interrupt driver when scheduler increments - * a queue's read pointer (idx). - * Bit fields: - * 31-16: Reserved - * 15-00: Interrupt enable, one bit for each queue -- 1: enabled, 0: disabled - * NOTE: This functionality is apparently a no-op; driver relies on interrupts - * from Rx queue to read Tx command responses and update Tx queues. - */ -#define IL49_SCD_INTERRUPT_MASK (IL49_SCD_START_OFFSET + 0xe4) - -/* - * Queue search status registers. One for each queue. - * Sets up queue mode and assigns queue to Tx DMA channel. - * Bit fields: - * 19-10: Write mask/enable bits for bits 0-9 - * 9: Driver should init to "0" - * 8: Scheduler-ACK mode (1), non-Scheduler-ACK (i.e. FIFO) mode (0). - * Driver should init to "1" for aggregation mode, or "0" otherwise. - * 7-6: Driver should init to "0" - * 5: Window Size Left; indicates whether scheduler can request - * another TFD, based on win size, etc. Driver should init - * this bit to "1" for aggregation mode, or "0" for non-agg. - * 4-1: Tx FIFO to use (range 0-7). - * 0: Queue is active (1), not active (0). - * Other bits should be written as "0" - * - * NOTE: If enabling Scheduler-ACK mode, chain mode should also be enabled - * via SCD_QUEUECHAIN_SEL. - */ -#define IL49_SCD_QUEUE_STATUS_BITS(x)\ - (IL49_SCD_START_OFFSET + 0x104 + (x) * 4) - -/* Bit field positions */ -#define IL49_SCD_QUEUE_STTS_REG_POS_ACTIVE (0) -#define IL49_SCD_QUEUE_STTS_REG_POS_TXF (1) -#define IL49_SCD_QUEUE_STTS_REG_POS_WSL (5) -#define IL49_SCD_QUEUE_STTS_REG_POS_SCD_ACK (8) - -/* Write masks */ -#define IL49_SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN (10) -#define IL49_SCD_QUEUE_STTS_REG_MSK (0x0007FC00) - -/** - * 4965 internal SRAM structures for scheduler, shared with driver ... - * - * Driver should clear and initialize the following areas after receiving - * "Alive" response from 4965 uCode, i.e. after initial - * uCode load, or after a uCode load done for error recovery: - * - * SCD_CONTEXT_DATA_OFFSET (size 128 bytes) - * SCD_TX_STTS_BITMAP_OFFSET (size 256 bytes) - * SCD_TRANSLATE_TBL_OFFSET (size 32 bytes) - * - * Driver accesses SRAM via HBUS_TARG_MEM_* registers. - * Driver reads base address of this scheduler area from SCD_SRAM_BASE_ADDR. - * All OFFSET values must be added to this base address. - */ - -/* - * Queue context. One 8-byte entry for each of 16 queues. - * - * Driver should clear this entire area (size 0x80) to 0 after receiving - * "Alive" notification from uCode. Additionally, driver should init - * each queue's entry as follows: - * - * LS Dword bit fields: - * 0-06: Max Tx win size for Scheduler-ACK. Driver should init to 64. - * - * MS Dword bit fields: - * 16-22: Frame limit. Driver should init to 10 (0xa). - * - * Driver should init all other bits to 0. - * - * Init must be done after driver receives "Alive" response from 4965 uCode, - * and when setting up queue for aggregation. - */ -#define IL49_SCD_CONTEXT_DATA_OFFSET 0x380 -#define IL49_SCD_CONTEXT_QUEUE_OFFSET(x) \ - (IL49_SCD_CONTEXT_DATA_OFFSET + ((x) * 8)) - -#define IL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS (0) -#define IL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK (0x0000007F) -#define IL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS (16) -#define IL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK (0x007F0000) - -/* - * Tx Status Bitmap - * - * Driver should clear this entire area (size 0x100) to 0 after receiving - * "Alive" notification from uCode. Area is used only by device itself; - * no other support (besides clearing) is required from driver. - */ -#define IL49_SCD_TX_STTS_BITMAP_OFFSET 0x400 - -/* - * RAxTID to queue translation mapping. - * - * When queue is in Scheduler-ACK mode, frames placed in a that queue must be - * for only one combination of receiver address (RA) and traffic ID (TID), i.e. - * one QOS priority level destined for one station (for this wireless link, - * not final destination). The SCD_TRANSLATE_TBL area provides 16 16-bit - * mappings, one for each of the 16 queues. If queue is not in Scheduler-ACK - * mode, the device ignores the mapping value. - * - * Bit fields, for each 16-bit map: - * 15-9: Reserved, set to 0 - * 8-4: Index into device's station table for recipient station - * 3-0: Traffic ID (tid), range 0-15 - * - * Driver should clear this entire area (size 32 bytes) to 0 after receiving - * "Alive" notification from uCode. To update a 16-bit map value, driver - * must read a dword-aligned value from device SRAM, replace the 16-bit map - * value of interest, and write the dword value back into device SRAM. - */ -#define IL49_SCD_TRANSLATE_TBL_OFFSET 0x500 - -/* Find translation table dword to read/write for given queue */ -#define IL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(x) \ - ((IL49_SCD_TRANSLATE_TBL_OFFSET + ((x) * 2)) & 0xfffffffc) - -#define IL_SCD_TXFIFO_POS_TID (0) -#define IL_SCD_TXFIFO_POS_RA (4) -#define IL_SCD_QUEUE_RA_TID_MAP_RATID_MSK (0x01FF) - -/*********************** END TX SCHEDULER *************************************/ - -#endif /* __il_prph_h__ */ |