diff options
| author | Stanislaw Gruszka <sgruszka@redhat.com> | 2011-11-15 15:40:26 +0400 |
|---|---|---|
| committer | Stanislaw Gruszka <sgruszka@redhat.com> | 2011-11-15 15:40:26 +0400 |
| commit | 61fe55f61fb48b691251e0f75505674db77f5d29 (patch) | |
| tree | f5ba365b65007a94a8c197b8ec0ab978ebe00161 /drivers/net/wireless/iwlegacy/iwl4965-base.c | |
| parent | 17d6e557359e0a4033bf0889e0b481519e145404 (diff) | |
| download | linux-61fe55f61fb48b691251e0f75505674db77f5d29.tar.xz | |
iwlegacy: rename base 4965 and 3945 file names
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Diffstat (limited to 'drivers/net/wireless/iwlegacy/iwl4965-base.c')
| -rw-r--r-- | drivers/net/wireless/iwlegacy/iwl4965-base.c | 3245 |
1 files changed, 0 insertions, 3245 deletions
diff --git a/drivers/net/wireless/iwlegacy/iwl4965-base.c b/drivers/net/wireless/iwlegacy/iwl4965-base.c deleted file mode 100644 index df86431d3bae..000000000000 --- a/drivers/net/wireless/iwlegacy/iwl4965-base.c +++ /dev/null @@ -1,3245 +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 "iwl-eeprom.h" -#include "iwl-dev.h" -#include "iwl-core.h" -#include "iwl-io.h" -#include "iwl-helpers.h" -#include "iwl-sta.h" -#include "iwl-4965-calib.h" -#include "iwl-4965.h" -#include "iwl-4965-led.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_update_chain_flags(struct il_priv *il) -{ - if (il->cfg->ops->hcmd->set_rxon_chain) { - il->cfg->ops->hcmd->set_rxon_chain(il, &il->ctx); - if (il->ctx.active.rx_chain != il->ctx.staging.rx_chain) - il_commit_rxon(il, &il->ctx); - } -} - -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_ctx) { - IL_ERR("trying to build beacon w/o beacon context!\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->beacon_ctx->bcast_sta_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, il->beacon_ctx); - il->mgmt_tx_ant = il4965_toggle_tx_ant(il, il->mgmt_tx_ant, - il->hw_params.valid_tx_ant); - rate_flags = il4965_ant_idx_to_flags(il->mgmt_tx_ant); - if ((rate >= IL_FIRST_CCK_RATE) && (rate <= IL_LAST_CCK_RATE)) - rate_flags |= RATE_MCS_CCK_MSK; - tx_beacon_cmd->tx.rate_n_flags = il4965_hw_set_rate_n_flags(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, REPLY_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->txb) { - struct sk_buff *skb; - - skb = txq->txb[txq->q.read_ptr].skb; - - /* can be called from irqs-disabled context */ - if (skb) { - dev_kfree_skb_any(skb); - txq->txb[txq->q.read_ptr].skb = 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, FH_MEM_CBBC_QUEUE(txq_id), - txq->q.dma_addr >> 8); - - return 0; -} - -/****************************************************************************** - * - * Generic RX handler implementations - * - ******************************************************************************/ -static void il4965_rx_reply_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 - * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION - * 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(STATUS_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_rx_beacon_notif(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 %d %d 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 (!_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_rx_card_state_notif(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(STATUS_RF_KILL_HW, &il->status); - else - clear_bit(STATUS_RF_KILL_HW, &il->status); - - if (!(flags & RXON_CARD_DISABLED)) - il_scan_cancel(il); - - if ((test_bit(STATUS_RF_KILL_HW, &status) != - test_bit(STATUS_RF_KILL_HW, &il->status))) - wiphy_rfkill_set_hw_state(il->hw->wiphy, - test_bit(STATUS_RF_KILL_HW, &il->status)); - else - wake_up(&il->wait_command_queue); -} - -/** - * il4965_setup_rx_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_rx_handlers(struct il_priv *il) -{ - il->rx_handlers[REPLY_ALIVE] = il4965_rx_reply_alive; - il->rx_handlers[REPLY_ERROR] = il_rx_reply_error; - il->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = il_rx_csa; - il->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] = - il_rx_spectrum_measure_notif; - il->rx_handlers[PM_SLEEP_NOTIFICATION] = il_rx_pm_sleep_notif; - il->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] = - il_rx_pm_debug_stats_notif; - il->rx_handlers[BEACON_NOTIFICATION] = il4965_rx_beacon_notif; - - /* - * 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->rx_handlers[REPLY_STATISTICS_CMD] = il4965_reply_stats; - il->rx_handlers[STATISTICS_NOTIFICATION] = il4965_rx_stats; - - il_setup_rx_scan_handlers(il); - - /* status change handler */ - il->rx_handlers[CARD_STATE_NOTIFICATION] = - il4965_rx_card_state_notif; - - il->rx_handlers[MISSED_BEACONS_NOTIFICATION] = - il4965_rx_missed_beacon_notif; - /* Rx handlers */ - il->rx_handlers[REPLY_RX_PHY_CMD] = il4965_rx_reply_rx_phy; - il->rx_handlers[REPLY_RX_MPDU_CMD] = il4965_rx_reply_rx; - /* block ack */ - il->rx_handlers[REPLY_COMPRESSED_BA] = il4965_rx_reply_compressed_ba; - /* Set up hardware specific Rx handlers */ - il->cfg->ops->lib->rx_handler_setup(il); -} - -/** - * il4965_rx_handle - Main entry function for receiving responses from uCode - * - * Uses the il->rx_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) & FH_RSCSR_FRAME_SIZE_MSK; - len += sizeof(u32); /* account for status word */ - - /* 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. */ - reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) && - (pkt->hdr.cmd != REPLY_RX_PHY_CMD) && - (pkt->hdr.cmd != REPLY_RX) && - (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) && - (pkt->hdr.cmd != REPLY_COMPRESSED_BA) && - (pkt->hdr.cmd != STATISTICS_NOTIFICATION) && - (pkt->hdr.cmd != REPLY_TX); - - /* Based on type of command response or notification, - * handle those that need handling via function in - * rx_handlers table. See il4965_setup_rx_handlers() */ - if (il->rx_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.rx_handlers[pkt->hdr.cmd]++; - il->rx_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 rx_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); - 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 (!test_bit(STATUS_ALIVE, &il->status)) { - if (hw_rf_kill) - set_bit(STATUS_RF_KILL_HW, &il->status); - else - clear_bit(STATUS_RF_KILL_HW, &il->status); - 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 FH_INT = 0x%08x\n", inta_fh); - } - - /* Re-enable all interrupts */ - /* only Re-enable if disabled by irq */ - if (test_bit(STATUS_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 = strict_strtoul(buf, 0, &val); - if (ret) - IL_ERR("%s is not in hex or decimal form.\n", buf); - else { - il->debug_level = val; - if (il_alloc_traffic_mem(il)) - IL_ERR( - "Not enough memory to generate traffic log\n"); - } - 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 = strict_strtoul(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%d).\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", - "FH_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->cfg->ops->lib->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, REPLY_CT_KILL_CONFIG_CMD, - sizeof(cmd), &cmd); - if (ret) - IL_ERR("REPLY_CT_KILL_CONFIG_CMD failed\n"); - else - D_INFO("REPLY_CT_KILL_CONFIG_CMD " - "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, -}; - -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, - FH_TCSR_CHNL_TX_CONFIG_REG(chan), - FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE | - FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE); - - /* Update FH chicken bits */ - reg_val = il_rd(il, FH_TX_CHICKEN_BITS_REG); - il_wr(il, FH_TX_CHICKEN_BITS_REG, - reg_val | FH_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 REPLY_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; - struct il_rxon_context *ctx = &il->ctx; - - 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(STATUS_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; - - if (il_is_associated_ctx(ctx)) { - struct il_rxon_cmd *active_rxon = - (struct il_rxon_cmd *)&ctx->active; - /* apply any changes in staging */ - ctx->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, &il->ctx); - - if (il->cfg->ops->hcmd->set_rxon_chain) - il->cfg->ops->hcmd->set_rxon_chain(il, ctx); - } - - /* Configure bluetooth coexistence if enabled */ - il_send_bt_config(il); - - il4965_reset_run_time_calib(il); - - set_bit(STATUS_READY, &il->status); - - /* Configure the adapter for unassociated operation */ - il_commit_rxon(il, ctx); - - /* 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); - - il_power_update_mode(il, true); - D_INFO("Updated power mode\n"); - - 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(STATUS_EXIT_PENDING, &il->status); - - /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set - * to prevent rearm timer */ - del_timer_sync(&il->watchdog); - - il_clear_ucode_stations(il, NULL); - 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(STATUS_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(STATUS_RF_KILL_HW, &il->status) << - STATUS_RF_KILL_HW | - test_bit(STATUS_GEO_CONFIGURED, &il->status) << - STATUS_GEO_CONFIGURED | - test_bit(STATUS_EXIT_PENDING, &il->status) << - STATUS_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(STATUS_RF_KILL_HW, &il->status) << - STATUS_RF_KILL_HW | - test_bit(STATUS_GEO_CONFIGURED, &il->status) << - STATUS_GEO_CONFIGURED | - test_bit(STATUS_FW_ERROR, &il->status) << - STATUS_FW_ERROR | - test_bit(STATUS_EXIT_PENDING, &il->status) << - STATUS_EXIT_PENDING; - - 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); - - 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); -} - -#define HW_READY_TIMEOUT (50) - -static int il4965_set_hw_ready(struct il_priv *il) -{ - int ret = 0; - - 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, - HW_READY_TIMEOUT); - if (ret != -ETIMEDOUT) - il->hw_ready = true; - else - il->hw_ready = false; - - D_INFO("hardware %s\n", - (il->hw_ready == 1) ? "ready" : "not ready"); - return ret; -} - -static int il4965_prepare_card_hw(struct il_priv *il) -{ - int ret = 0; - - D_INFO("il4965_prepare_card_hw enter\n"); - - ret = il4965_set_hw_ready(il); - if (il->hw_ready) - return ret; - - /* 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); - - return ret; -} - -#define MAX_HW_RESTARTS 5 - -static int __il4965_up(struct il_priv *il) -{ - int i; - int ret; - - if (test_bit(STATUS_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, &il->ctx); - if (ret) { - il_dealloc_bcast_stations(il); - return ret; - } - - il4965_prepare_card_hw(il); - - if (!il->hw_ready) { - IL_WARN("Exit 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(STATUS_RF_KILL_HW, &il->status); - else - set_bit(STATUS_RF_KILL_HW, &il->status); - - if (il_is_rfkill(il)) { - wiphy_rfkill_set_hw_state(il->hw->wiphy, true); - - il_enable_interrupts(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->cfg->ops->lib->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(STATUS_EXIT_PENDING, &il->status); - __il4965_down(il); - clear_bit(STATUS_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(STATUS_EXIT_PENDING, &il->status)) - goto out; - - il->cfg->ops->lib->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(STATUS_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(STATUS_EXIT_PENDING, &il->status) || - test_bit(STATUS_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(STATUS_EXIT_PENDING, &il->status)) - return; - - if (test_and_clear_bit(STATUS_FW_ERROR, &il->status)) { - mutex_lock(&il->mutex); - il->ctx.vif = NULL; - 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(STATUS_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(STATUS_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 */ - hw->flags = IEEE80211_HW_SIGNAL_DBM | - IEEE80211_HW_AMPDU_AGGREGATION | - IEEE80211_HW_NEED_DTIM_PERIOD | - IEEE80211_HW_SPECTRUM_MGMT | - IEEE80211_HW_REPORTS_TX_ACK_STATUS; - - if (il->cfg->sku & IL_SKU_N) - hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS | - IEEE80211_HW_SUPPORTS_STATIC_SMPS; - - hw->sta_data_size = sizeof(struct il_station_priv); - hw->vif_data_size = sizeof(struct il_vif_priv); - - hw->wiphy->interface_modes |= il->ctx.interface_modes; - hw->wiphy->interface_modes |= il->ctx.exclusive_interface_modes; - - hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY | - WIPHY_FLAG_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(STATUS_READY, &il->status), - UCODE_READY_TIMEOUT); - if (!ret) { - if (!test_bit(STATUS_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 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, 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; - struct il_vif_priv *vif_priv = (void *)vif->drv_priv; - - D_MAC80211("enter\n"); - - il4965_update_tkip_key(il, vif_priv->ctx, 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; - struct il_vif_priv *vif_priv = (void *)vif->drv_priv; - struct il_rxon_context *ctx = vif_priv->ctx; - 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; - } - - sta_id = il_sta_id_or_broadcast(il, vif_priv->ctx, 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 = !ctx->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, - vif_priv->ctx, key); - else - ret = il4965_set_dynamic_key(il, vif_priv->ctx, - 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, ctx, key); - else - ret = il4965_remove_dynamic_key(il, ctx, - 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) -{ - 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(STATUS_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: - D_HT("stop Tx\n"); - ret = il4965_tx_agg_stop(il, vif, sta, tid); - if (test_bit(STATUS_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; - struct il_vif_priv *vif_priv = (void *)vif->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, vif_priv->ctx, 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_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->channel; - struct il_ht_config *ht_conf = &il->current_ht_config; - - struct il_rxon_context *ctx = &il->ctx; - u16 ch; - - D_MAC80211("enter\n"); - - mutex_lock(&il->mutex); - - if (il_is_rfkill(il)) - goto out; - - if (test_bit(STATUS_EXIT_PENDING, &il->status) || - test_bit(STATUS_SCANNING, &il->status) || - test_bit(STATUS_CHANNEL_SWITCH_PENDING, &il->status)) - goto out; - - if (!il_is_associated_ctx(ctx)) - goto out; - - if (!il->cfg->ops->lib->set_channel_switch) - goto out; - - ch = channel->hw_value; - if (le16_to_cpu(ctx->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 */ - ctx->ht.enabled = conf_is_ht(conf); - if (ctx->ht.enabled) { - if (conf_is_ht40_minus(conf)) { - ctx->ht.extension_chan_offset = - IEEE80211_HT_PARAM_CHA_SEC_BELOW; - ctx->ht.is_40mhz = true; - } else if (conf_is_ht40_plus(conf)) { - ctx->ht.extension_chan_offset = - IEEE80211_HT_PARAM_CHA_SEC_ABOVE; - ctx->ht.is_40mhz = true; - } else { - ctx->ht.extension_chan_offset = - IEEE80211_HT_PARAM_CHA_SEC_NONE; - ctx->ht.is_40mhz = false; - } - } else - ctx->ht.is_40mhz = false; - - if ((le16_to_cpu(ctx->staging.channel) != ch)) - ctx->staging.flags = 0; - - il_set_rxon_channel(il, channel, ctx); - il_set_rxon_ht(il, ht_conf); - il_set_flags_for_band(il, ctx, channel->band, ctx->vif); - - spin_unlock_irq(&il->lock); - - il_set_rate(il); - /* - * at this point, staging_rxon has the - * configuration for channel switch - */ - set_bit(STATUS_CHANNEL_SWITCH_PENDING, &il->status); - il->switch_channel = cpu_to_le16(ch); - if (il->cfg->ops->lib->set_channel_switch(il, ch_switch)) { - clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &il->status); - il->switch_channel = 0; - ieee80211_chswitch_done(ctx->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 | FIF_PROMISC_IN_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->ctx.staging.filter_flags &= ~filter_nand; - il->ctx.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_PROMISC_IN_BSS | - 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(STATUS_EXIT_PENDING, &il->status) || - test_bit(STATUS_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->cfg->ops->lib->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); - - init_timer(&il->stats_periodic); - il->stats_periodic.data = (unsigned long)il; - il->stats_periodic.function = il4965_bg_stats_periodic; - - init_timer(&il->watchdog); - il->watchdog.data = (unsigned long)il; - il->watchdog.function = il_bg_watchdog; - - 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 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->cfg->ops->hcmd->set_rxon_chain) - il->cfg->ops->hcmd->set_rxon_chain(il, - &il->ctx); - - 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) -{ - il4965_calib_free_results(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 int il4965_set_hw_params(struct il_priv *il) -{ - 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; - - /* Device-specific setup */ - return il->cfg->ops->lib->set_hw_params(il); -} - -static const u8 il4965_bss_ac_to_fifo[] = { - IL_TX_FIFO_VO, - IL_TX_FIFO_VI, - IL_TX_FIFO_BE, - IL_TX_FIFO_BK, -}; - -static const u8 il4965_bss_ac_to_queue[] = { - 0, 1, 2, 3, -}; - -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 = il_alloc_all(cfg); - if (!hw) { - err = -ENOMEM; - goto out; - } - il = hw->priv; - /* At this point both hw and il are allocated. */ - - il->ctx.ctxid = 0; - - il->ctx.always_active = true; - il->ctx.is_active = true; - il->ctx.rxon_cmd = REPLY_RXON; - il->ctx.rxon_timing_cmd = REPLY_RXON_TIMING; - il->ctx.rxon_assoc_cmd = REPLY_RXON_ASSOC; - il->ctx.qos_cmd = REPLY_QOS_PARAM; - il->ctx.ap_sta_id = IL_AP_ID; - il->ctx.wep_key_cmd = REPLY_WEPKEY; - il->ctx.ac_to_fifo = il4965_bss_ac_to_fifo; - il->ctx.ac_to_queue = il4965_bss_ac_to_queue; - il->ctx.exclusive_interface_modes = - BIT(NL80211_IFTYPE_ADHOC); - il->ctx.interface_modes = - BIT(NL80211_IFTYPE_STATION); - il->ctx.ap_devtype = RXON_DEV_TYPE_AP; - il->ctx.ibss_devtype = RXON_DEV_TYPE_IBSS; - il->ctx.station_devtype = RXON_DEV_TYPE_ESS; - il->ctx.unused_devtype = RXON_DEV_TYPE_ESS; - - SET_IEEE80211_DEV(hw, &pdev->dev); - - D_INFO("*** LOAD DRIVER ***\n"); - il->cfg = cfg; - il->pci_dev = pdev; - il->inta_mask = CSR_INI_SET_MASK; - - if (il_alloc_traffic_mem(il)) - IL_ERR("Not enough memory to generate traffic log\n"); - - /************************** - * 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_iomap(pdev, 0, 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"); - 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; - - 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 - ************************/ - if (il4965_set_hw_params(il)) { - IL_ERR("failed to set hw parameters\n"); - goto out_free_eeprom; - } - - /******************* - * 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_rx_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(STATUS_RF_KILL_HW, &il->status); - else - set_bit(STATUS_RF_KILL_HW, &il->status); - - wiphy_rfkill_set_hw_state(il->hw->wiphy, - test_bit(STATUS_RF_KILL_HW, &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: - pci_iounmap(pdev, il->hw_base); - out_pci_release_regions: - pci_set_drvdata(pdev, NULL); - pci_release_regions(pdev); - out_pci_disable_device: - pci_disable_device(pdev); - out_ieee80211_free_hw: - il_free_traffic_mem(il); - ieee80211_free_hw(il->hw); - out: - return err; -} - -static void __devexit 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 STATUS_EXIT_PENDING bit. - */ - set_bit(STATUS_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; - il_free_traffic_mem(il); - - free_irq(il->pci_dev->irq, il); - pci_disable_msi(il->pci_dev); - pci_iounmap(pdev, il->hw_base); - pci_release_regions(pdev); - pci_disable_device(pdev); - pci_set_drvdata(pdev, NULL); - - 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 DEFINE_PCI_DEVICE_TABLE(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 = __devexit_p(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"); -module_param_named(fw_restart, il4965_mod_params.restart_fw, int, S_IRUGO); -MODULE_PARM_DESC(fw_restart, "restart firmware in case of error"); |