diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath6kl/init.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath6kl/init.c | 1727 |
1 files changed, 1727 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath6kl/init.c b/drivers/net/wireless/ath/ath6kl/init.c new file mode 100644 index 000000000000..c1d2366704b5 --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/init.c @@ -0,0 +1,1727 @@ + +/* + * Copyright (c) 2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <linux/moduleparam.h> +#include <linux/of.h> +#include <linux/mmc/sdio_func.h> +#include "core.h" +#include "cfg80211.h" +#include "target.h" +#include "debug.h" +#include "hif-ops.h" + +unsigned int debug_mask; +static unsigned int testmode; + +module_param(debug_mask, uint, 0644); +module_param(testmode, uint, 0644); + +/* + * Include definitions here that can be used to tune the WLAN module + * behavior. Different customers can tune the behavior as per their needs, + * here. + */ + +/* + * This configuration item enable/disable keepalive support. + * Keepalive support: In the absence of any data traffic to AP, null + * frames will be sent to the AP at periodic interval, to keep the association + * active. This configuration item defines the periodic interval. + * Use value of zero to disable keepalive support + * Default: 60 seconds + */ +#define WLAN_CONFIG_KEEP_ALIVE_INTERVAL 60 + +/* + * This configuration item sets the value of disconnect timeout + * Firmware delays sending the disconnec event to the host for this + * timeout after is gets disconnected from the current AP. + * If the firmware successly roams within the disconnect timeout + * it sends a new connect event + */ +#define WLAN_CONFIG_DISCONNECT_TIMEOUT 10 + +#define CONFIG_AR600x_DEBUG_UART_TX_PIN 8 + +#define ATH6KL_DATA_OFFSET 64 +struct sk_buff *ath6kl_buf_alloc(int size) +{ + struct sk_buff *skb; + u16 reserved; + + /* Add chacheline space at front and back of buffer */ + reserved = (2 * L1_CACHE_BYTES) + ATH6KL_DATA_OFFSET + + sizeof(struct htc_packet) + ATH6KL_HTC_ALIGN_BYTES; + skb = dev_alloc_skb(size + reserved); + + if (skb) + skb_reserve(skb, reserved - L1_CACHE_BYTES); + return skb; +} + +void ath6kl_init_profile_info(struct ath6kl *ar) +{ + ar->ssid_len = 0; + memset(ar->ssid, 0, sizeof(ar->ssid)); + + ar->dot11_auth_mode = OPEN_AUTH; + ar->auth_mode = NONE_AUTH; + ar->prwise_crypto = NONE_CRYPT; + ar->prwise_crypto_len = 0; + ar->grp_crypto = NONE_CRYPT; + ar->grp_crypto_len = 0; + memset(ar->wep_key_list, 0, sizeof(ar->wep_key_list)); + memset(ar->req_bssid, 0, sizeof(ar->req_bssid)); + memset(ar->bssid, 0, sizeof(ar->bssid)); + ar->bss_ch = 0; + ar->nw_type = ar->next_mode = INFRA_NETWORK; +} + +static u8 ath6kl_get_fw_iftype(struct ath6kl *ar) +{ + switch (ar->nw_type) { + case INFRA_NETWORK: + return HI_OPTION_FW_MODE_BSS_STA; + case ADHOC_NETWORK: + return HI_OPTION_FW_MODE_IBSS; + case AP_NETWORK: + return HI_OPTION_FW_MODE_AP; + default: + ath6kl_err("Unsupported interface type :%d\n", ar->nw_type); + return 0xff; + } +} + +static int ath6kl_set_host_app_area(struct ath6kl *ar) +{ + u32 address, data; + struct host_app_area host_app_area; + + /* Fetch the address of the host_app_area_s + * instance in the host interest area */ + address = ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_app_host_interest)); + address = TARG_VTOP(ar->target_type, address); + + if (ath6kl_diag_read32(ar, address, &data)) + return -EIO; + + address = TARG_VTOP(ar->target_type, data); + host_app_area.wmi_protocol_ver = WMI_PROTOCOL_VERSION; + if (ath6kl_diag_write(ar, address, (u8 *) &host_app_area, + sizeof(struct host_app_area))) + return -EIO; + + return 0; +} + +static inline void set_ac2_ep_map(struct ath6kl *ar, + u8 ac, + enum htc_endpoint_id ep) +{ + ar->ac2ep_map[ac] = ep; + ar->ep2ac_map[ep] = ac; +} + +/* connect to a service */ +static int ath6kl_connectservice(struct ath6kl *ar, + struct htc_service_connect_req *con_req, + char *desc) +{ + int status; + struct htc_service_connect_resp response; + + memset(&response, 0, sizeof(response)); + + status = ath6kl_htc_conn_service(ar->htc_target, con_req, &response); + if (status) { + ath6kl_err("failed to connect to %s service status:%d\n", + desc, status); + return status; + } + + switch (con_req->svc_id) { + case WMI_CONTROL_SVC: + if (test_bit(WMI_ENABLED, &ar->flag)) + ath6kl_wmi_set_control_ep(ar->wmi, response.endpoint); + ar->ctrl_ep = response.endpoint; + break; + case WMI_DATA_BE_SVC: + set_ac2_ep_map(ar, WMM_AC_BE, response.endpoint); + break; + case WMI_DATA_BK_SVC: + set_ac2_ep_map(ar, WMM_AC_BK, response.endpoint); + break; + case WMI_DATA_VI_SVC: + set_ac2_ep_map(ar, WMM_AC_VI, response.endpoint); + break; + case WMI_DATA_VO_SVC: + set_ac2_ep_map(ar, WMM_AC_VO, response.endpoint); + break; + default: + ath6kl_err("service id is not mapped %d\n", con_req->svc_id); + return -EINVAL; + } + + return 0; +} + +static int ath6kl_init_service_ep(struct ath6kl *ar) +{ + struct htc_service_connect_req connect; + + memset(&connect, 0, sizeof(connect)); + + /* these fields are the same for all service endpoints */ + connect.ep_cb.rx = ath6kl_rx; + connect.ep_cb.rx_refill = ath6kl_rx_refill; + connect.ep_cb.tx_full = ath6kl_tx_queue_full; + + /* + * Set the max queue depth so that our ath6kl_tx_queue_full handler + * gets called. + */ + connect.max_txq_depth = MAX_DEFAULT_SEND_QUEUE_DEPTH; + connect.ep_cb.rx_refill_thresh = ATH6KL_MAX_RX_BUFFERS / 4; + if (!connect.ep_cb.rx_refill_thresh) + connect.ep_cb.rx_refill_thresh++; + + /* connect to control service */ + connect.svc_id = WMI_CONTROL_SVC; + if (ath6kl_connectservice(ar, &connect, "WMI CONTROL")) + return -EIO; + + connect.flags |= HTC_FLGS_TX_BNDL_PAD_EN; + + /* + * Limit the HTC message size on the send path, although e can + * receive A-MSDU frames of 4K, we will only send ethernet-sized + * (802.3) frames on the send path. + */ + connect.max_rxmsg_sz = WMI_MAX_TX_DATA_FRAME_LENGTH; + + /* + * To reduce the amount of committed memory for larger A_MSDU + * frames, use the recv-alloc threshold mechanism for larger + * packets. + */ + connect.ep_cb.rx_alloc_thresh = ATH6KL_BUFFER_SIZE; + connect.ep_cb.rx_allocthresh = ath6kl_alloc_amsdu_rxbuf; + + /* + * For the remaining data services set the connection flag to + * reduce dribbling, if configured to do so. + */ + connect.conn_flags |= HTC_CONN_FLGS_REDUCE_CRED_DRIB; + connect.conn_flags &= ~HTC_CONN_FLGS_THRESH_MASK; + connect.conn_flags |= HTC_CONN_FLGS_THRESH_LVL_HALF; + + connect.svc_id = WMI_DATA_BE_SVC; + + if (ath6kl_connectservice(ar, &connect, "WMI DATA BE")) + return -EIO; + + /* connect to back-ground map this to WMI LOW_PRI */ + connect.svc_id = WMI_DATA_BK_SVC; + if (ath6kl_connectservice(ar, &connect, "WMI DATA BK")) + return -EIO; + + /* connect to Video service, map this to to HI PRI */ + connect.svc_id = WMI_DATA_VI_SVC; + if (ath6kl_connectservice(ar, &connect, "WMI DATA VI")) + return -EIO; + + /* + * Connect to VO service, this is currently not mapped to a WMI + * priority stream due to historical reasons. WMI originally + * defined 3 priorities over 3 mailboxes We can change this when + * WMI is reworked so that priorities are not dependent on + * mailboxes. + */ + connect.svc_id = WMI_DATA_VO_SVC; + if (ath6kl_connectservice(ar, &connect, "WMI DATA VO")) + return -EIO; + + return 0; +} + +static void ath6kl_init_control_info(struct ath6kl *ar) +{ + u8 ctr; + + clear_bit(WMI_ENABLED, &ar->flag); + ath6kl_init_profile_info(ar); + ar->def_txkey_index = 0; + memset(ar->wep_key_list, 0, sizeof(ar->wep_key_list)); + ar->ch_hint = 0; + ar->listen_intvl_t = A_DEFAULT_LISTEN_INTERVAL; + ar->listen_intvl_b = 0; + ar->tx_pwr = 0; + clear_bit(SKIP_SCAN, &ar->flag); + set_bit(WMM_ENABLED, &ar->flag); + ar->intra_bss = 1; + memset(&ar->sc_params, 0, sizeof(ar->sc_params)); + ar->sc_params.short_scan_ratio = WMI_SHORTSCANRATIO_DEFAULT; + ar->sc_params.scan_ctrl_flags = DEFAULT_SCAN_CTRL_FLAGS; + ar->lrssi_roam_threshold = DEF_LRSSI_ROAM_THRESHOLD; + + memset((u8 *)ar->sta_list, 0, + AP_MAX_NUM_STA * sizeof(struct ath6kl_sta)); + + spin_lock_init(&ar->mcastpsq_lock); + + /* Init the PS queues */ + for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) { + spin_lock_init(&ar->sta_list[ctr].psq_lock); + skb_queue_head_init(&ar->sta_list[ctr].psq); + } + + skb_queue_head_init(&ar->mcastpsq); + + memcpy(ar->ap_country_code, DEF_AP_COUNTRY_CODE, 3); +} + +/* + * Set HTC/Mbox operational parameters, this can only be called when the + * target is in the BMI phase. + */ +static int ath6kl_set_htc_params(struct ath6kl *ar, u32 mbox_isr_yield_val, + u8 htc_ctrl_buf) +{ + int status; + u32 blk_size; + + blk_size = ar->mbox_info.block_size; + + if (htc_ctrl_buf) + blk_size |= ((u32)htc_ctrl_buf) << 16; + + /* set the host interest area for the block size */ + status = ath6kl_bmi_write(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_mbox_io_block_sz)), + (u8 *)&blk_size, + 4); + if (status) { + ath6kl_err("bmi_write_memory for IO block size failed\n"); + goto out; + } + + ath6kl_dbg(ATH6KL_DBG_TRC, "block size set: %d (target addr:0x%X)\n", + blk_size, + ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_mbox_io_block_sz))); + + if (mbox_isr_yield_val) { + /* set the host interest area for the mbox ISR yield limit */ + status = ath6kl_bmi_write(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_mbox_isr_yield_limit)), + (u8 *)&mbox_isr_yield_val, + 4); + if (status) { + ath6kl_err("bmi_write_memory for yield limit failed\n"); + goto out; + } + } + +out: + return status; +} + +#define REG_DUMP_COUNT_AR6003 60 +#define REGISTER_DUMP_LEN_MAX 60 + +static void ath6kl_dump_target_assert_info(struct ath6kl *ar) +{ + u32 address; + u32 regdump_loc = 0; + int status; + u32 regdump_val[REGISTER_DUMP_LEN_MAX]; + u32 i; + + if (ar->target_type != TARGET_TYPE_AR6003) + return; + + /* the reg dump pointer is copied to the host interest area */ + address = ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_failure_state)); + address = TARG_VTOP(ar->target_type, address); + + /* read RAM location through diagnostic window */ + status = ath6kl_diag_read32(ar, address, ®dump_loc); + + if (status || !regdump_loc) { + ath6kl_err("failed to get ptr to register dump area\n"); + return; + } + + ath6kl_dbg(ATH6KL_DBG_TRC, "location of register dump data: 0x%X\n", + regdump_loc); + regdump_loc = TARG_VTOP(ar->target_type, regdump_loc); + + /* fetch register dump data */ + status = ath6kl_diag_read(ar, regdump_loc, (u8 *)®dump_val[0], + REG_DUMP_COUNT_AR6003 * (sizeof(u32))); + + if (status) { + ath6kl_err("failed to get register dump\n"); + return; + } + ath6kl_dbg(ATH6KL_DBG_TRC, "Register Dump:\n"); + + for (i = 0; i < REG_DUMP_COUNT_AR6003; i++) + ath6kl_dbg(ATH6KL_DBG_TRC, " %d : 0x%8.8X\n", + i, regdump_val[i]); + +} + +void ath6kl_target_failure(struct ath6kl *ar) +{ + ath6kl_err("target asserted\n"); + + /* try dumping target assertion information (if any) */ + ath6kl_dump_target_assert_info(ar); + +} + +static int ath6kl_target_config_wlan_params(struct ath6kl *ar) +{ + int status = 0; + int ret; + + /* + * Configure the device for rx dot11 header rules. "0,0" are the + * default values. Required if checksum offload is needed. Set + * RxMetaVersion to 2. + */ + if (ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, + ar->rx_meta_ver, 0, 0)) { + ath6kl_err("unable to set the rx frame format\n"); + status = -EIO; + } + + if (ar->conf_flags & ATH6KL_CONF_IGNORE_PS_FAIL_EVT_IN_SCAN) + if ((ath6kl_wmi_pmparams_cmd(ar->wmi, 0, 1, 0, 0, 1, + IGNORE_POWER_SAVE_FAIL_EVENT_DURING_SCAN)) != 0) { + ath6kl_err("unable to set power save fail event policy\n"); + status = -EIO; + } + + if (!(ar->conf_flags & ATH6KL_CONF_IGNORE_ERP_BARKER)) + if ((ath6kl_wmi_set_lpreamble_cmd(ar->wmi, 0, + WMI_DONOT_IGNORE_BARKER_IN_ERP)) != 0) { + ath6kl_err("unable to set barker preamble policy\n"); + status = -EIO; + } + + if (ath6kl_wmi_set_keepalive_cmd(ar->wmi, + WLAN_CONFIG_KEEP_ALIVE_INTERVAL)) { + ath6kl_err("unable to set keep alive interval\n"); + status = -EIO; + } + + if (ath6kl_wmi_disctimeout_cmd(ar->wmi, + WLAN_CONFIG_DISCONNECT_TIMEOUT)) { + ath6kl_err("unable to set disconnect timeout\n"); + status = -EIO; + } + + if (!(ar->conf_flags & ATH6KL_CONF_ENABLE_TX_BURST)) + if (ath6kl_wmi_set_wmm_txop(ar->wmi, WMI_TXOP_DISABLED)) { + ath6kl_err("unable to set txop bursting\n"); + status = -EIO; + } + + if (ar->p2p) { + ret = ath6kl_wmi_info_req_cmd(ar->wmi, + P2P_FLAG_CAPABILITIES_REQ | + P2P_FLAG_MACADDR_REQ | + P2P_FLAG_HMODEL_REQ); + if (ret) { + ath6kl_dbg(ATH6KL_DBG_TRC, "failed to request P2P " + "capabilities (%d) - assuming P2P not " + "supported\n", ret); + ar->p2p = 0; + } + } + + if (ar->p2p) { + /* Enable Probe Request reporting for P2P */ + ret = ath6kl_wmi_probe_report_req_cmd(ar->wmi, true); + if (ret) { + ath6kl_dbg(ATH6KL_DBG_TRC, "failed to enable Probe " + "Request reporting (%d)\n", ret); + } + } + + return status; +} + +int ath6kl_configure_target(struct ath6kl *ar) +{ + u32 param, ram_reserved_size; + u8 fw_iftype; + + fw_iftype = ath6kl_get_fw_iftype(ar); + if (fw_iftype == 0xff) + return -EINVAL; + + /* Tell target which HTC version it is used*/ + param = HTC_PROTOCOL_VERSION; + if (ath6kl_bmi_write(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_app_host_interest)), + (u8 *)¶m, 4) != 0) { + ath6kl_err("bmi_write_memory for htc version failed\n"); + return -EIO; + } + + /* set the firmware mode to STA/IBSS/AP */ + param = 0; + + if (ath6kl_bmi_read(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_option_flag)), + (u8 *)¶m, 4) != 0) { + ath6kl_err("bmi_read_memory for setting fwmode failed\n"); + return -EIO; + } + + param |= (1 << HI_OPTION_NUM_DEV_SHIFT); + param |= (fw_iftype << HI_OPTION_FW_MODE_SHIFT); + if (ar->p2p && fw_iftype == HI_OPTION_FW_MODE_BSS_STA) { + param |= HI_OPTION_FW_SUBMODE_P2PDEV << + HI_OPTION_FW_SUBMODE_SHIFT; + } + param |= (0 << HI_OPTION_MAC_ADDR_METHOD_SHIFT); + param |= (0 << HI_OPTION_FW_BRIDGE_SHIFT); + + if (ath6kl_bmi_write(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_option_flag)), + (u8 *)¶m, + 4) != 0) { + ath6kl_err("bmi_write_memory for setting fwmode failed\n"); + return -EIO; + } + + ath6kl_dbg(ATH6KL_DBG_TRC, "firmware mode set\n"); + + /* + * Hardcode the address use for the extended board data + * Ideally this should be pre-allocate by the OS at boot time + * But since it is a new feature and board data is loaded + * at init time, we have to workaround this from host. + * It is difficult to patch the firmware boot code, + * but possible in theory. + */ + + param = ar->hw.board_ext_data_addr; + ram_reserved_size = ar->hw.reserved_ram_size; + + if (ath6kl_bmi_write(ar, ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_board_ext_data)), + (u8 *)¶m, 4) != 0) { + ath6kl_err("bmi_write_memory for hi_board_ext_data failed\n"); + return -EIO; + } + + if (ath6kl_bmi_write(ar, ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_end_ram_reserve_sz)), + (u8 *)&ram_reserved_size, 4) != 0) { + ath6kl_err("bmi_write_memory for hi_end_ram_reserve_sz failed\n"); + return -EIO; + } + + /* set the block size for the target */ + if (ath6kl_set_htc_params(ar, MBOX_YIELD_LIMIT, 0)) + /* use default number of control buffers */ + return -EIO; + + return 0; +} + +struct ath6kl *ath6kl_core_alloc(struct device *sdev) +{ + struct net_device *dev; + struct ath6kl *ar; + struct wireless_dev *wdev; + + wdev = ath6kl_cfg80211_init(sdev); + if (!wdev) { + ath6kl_err("ath6kl_cfg80211_init failed\n"); + return NULL; + } + + ar = wdev_priv(wdev); + ar->dev = sdev; + ar->wdev = wdev; + wdev->iftype = NL80211_IFTYPE_STATION; + + if (ath6kl_debug_init(ar)) { + ath6kl_err("Failed to initialize debugfs\n"); + ath6kl_cfg80211_deinit(ar); + return NULL; + } + + dev = alloc_netdev(0, "wlan%d", ether_setup); + if (!dev) { + ath6kl_err("no memory for network device instance\n"); + ath6kl_cfg80211_deinit(ar); + return NULL; + } + + dev->ieee80211_ptr = wdev; + SET_NETDEV_DEV(dev, wiphy_dev(wdev->wiphy)); + wdev->netdev = dev; + ar->sme_state = SME_DISCONNECTED; + + init_netdev(dev); + + ar->net_dev = dev; + set_bit(WLAN_ENABLED, &ar->flag); + + ar->wlan_pwr_state = WLAN_POWER_STATE_ON; + + spin_lock_init(&ar->lock); + + ath6kl_init_control_info(ar); + init_waitqueue_head(&ar->event_wq); + sema_init(&ar->sem, 1); + clear_bit(DESTROY_IN_PROGRESS, &ar->flag); + + INIT_LIST_HEAD(&ar->amsdu_rx_buffer_queue); + + setup_timer(&ar->disconnect_timer, disconnect_timer_handler, + (unsigned long) dev); + + return ar; +} + +int ath6kl_unavail_ev(struct ath6kl *ar) +{ + ath6kl_destroy(ar->net_dev, 1); + + return 0; +} + +/* firmware upload */ +static int ath6kl_get_fw(struct ath6kl *ar, const char *filename, + u8 **fw, size_t *fw_len) +{ + const struct firmware *fw_entry; + int ret; + + ret = request_firmware(&fw_entry, filename, ar->dev); + if (ret) + return ret; + + *fw_len = fw_entry->size; + *fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL); + + if (*fw == NULL) + ret = -ENOMEM; + + release_firmware(fw_entry); + + return ret; +} + +#ifdef CONFIG_OF +static const char *get_target_ver_dir(const struct ath6kl *ar) +{ + switch (ar->version.target_ver) { + case AR6003_REV1_VERSION: + return "ath6k/AR6003/hw1.0"; + case AR6003_REV2_VERSION: + return "ath6k/AR6003/hw2.0"; + case AR6003_REV3_VERSION: + return "ath6k/AR6003/hw2.1.1"; + } + ath6kl_warn("%s: unsupported target version 0x%x.\n", __func__, + ar->version.target_ver); + return NULL; +} + +/* + * Check the device tree for a board-id and use it to construct + * the pathname to the firmware file. Used (for now) to find a + * fallback to the "bdata.bin" file--typically a symlink to the + * appropriate board-specific file. + */ +static bool check_device_tree(struct ath6kl *ar) +{ + static const char *board_id_prop = "atheros,board-id"; + struct device_node *node; + char board_filename[64]; + const char *board_id; + int ret; + + for_each_compatible_node(node, NULL, "atheros,ath6kl") { + board_id = of_get_property(node, board_id_prop, NULL); + if (board_id == NULL) { + ath6kl_warn("No \"%s\" property on %s node.\n", + board_id_prop, node->name); + continue; + } + snprintf(board_filename, sizeof(board_filename), + "%s/bdata.%s.bin", get_target_ver_dir(ar), board_id); + + ret = ath6kl_get_fw(ar, board_filename, &ar->fw_board, + &ar->fw_board_len); + if (ret) { + ath6kl_err("Failed to get DT board file %s: %d\n", + board_filename, ret); + continue; + } + return true; + } + return false; +} +#else +static bool check_device_tree(struct ath6kl *ar) +{ + return false; +} +#endif /* CONFIG_OF */ + +static int ath6kl_fetch_board_file(struct ath6kl *ar) +{ + const char *filename; + int ret; + + if (ar->fw_board != NULL) + return 0; + + switch (ar->version.target_ver) { + case AR6003_REV2_VERSION: + filename = AR6003_REV2_BOARD_DATA_FILE; + break; + case AR6004_REV1_VERSION: + filename = AR6004_REV1_BOARD_DATA_FILE; + break; + default: + filename = AR6003_REV3_BOARD_DATA_FILE; + break; + } + + ret = ath6kl_get_fw(ar, filename, &ar->fw_board, + &ar->fw_board_len); + if (ret == 0) { + /* managed to get proper board file */ + return 0; + } + + if (check_device_tree(ar)) { + /* got board file from device tree */ + return 0; + } + + /* there was no proper board file, try to use default instead */ + ath6kl_warn("Failed to get board file %s (%d), trying to find default board file.\n", + filename, ret); + + switch (ar->version.target_ver) { + case AR6003_REV2_VERSION: + filename = AR6003_REV2_DEFAULT_BOARD_DATA_FILE; + break; + case AR6004_REV1_VERSION: + filename = AR6004_REV1_DEFAULT_BOARD_DATA_FILE; + break; + default: + filename = AR6003_REV3_DEFAULT_BOARD_DATA_FILE; + break; + } + + ret = ath6kl_get_fw(ar, filename, &ar->fw_board, + &ar->fw_board_len); + if (ret) { + ath6kl_err("Failed to get default board file %s: %d\n", + filename, ret); + return ret; + } + + ath6kl_warn("WARNING! No proper board file was not found, instead using a default board file.\n"); + ath6kl_warn("Most likely your hardware won't work as specified. Install correct board file!\n"); + + return 0; +} + +static int ath6kl_fetch_otp_file(struct ath6kl *ar) +{ + const char *filename; + int ret; + + if (ar->fw_otp != NULL) + return 0; + + switch (ar->version.target_ver) { + case AR6003_REV2_VERSION: + filename = AR6003_REV2_OTP_FILE; + break; + case AR6004_REV1_VERSION: + ath6kl_dbg(ATH6KL_DBG_TRC, "AR6004 doesn't need OTP file\n"); + return 0; + break; + default: + filename = AR6003_REV3_OTP_FILE; + break; + } + + ret = ath6kl_get_fw(ar, filename, &ar->fw_otp, + &ar->fw_otp_len); + if (ret) { + ath6kl_err("Failed to get OTP file %s: %d\n", + filename, ret); + return ret; + } + + return 0; +} + +static int ath6kl_fetch_fw_file(struct ath6kl *ar) +{ + const char *filename; + int ret; + + if (ar->fw != NULL) + return 0; + + if (testmode) { + switch (ar->version.target_ver) { + case AR6003_REV2_VERSION: + filename = AR6003_REV2_TCMD_FIRMWARE_FILE; + break; + case AR6003_REV3_VERSION: + filename = AR6003_REV3_TCMD_FIRMWARE_FILE; + break; + case AR6004_REV1_VERSION: + ath6kl_warn("testmode not supported with ar6004\n"); + return -EOPNOTSUPP; + default: + ath6kl_warn("unknown target version: 0x%x\n", + ar->version.target_ver); + return -EINVAL; + } + + set_bit(TESTMODE, &ar->flag); + + goto get_fw; + } + + switch (ar->version.target_ver) { + case AR6003_REV2_VERSION: + filename = AR6003_REV2_FIRMWARE_FILE; + break; + case AR6004_REV1_VERSION: + filename = AR6004_REV1_FIRMWARE_FILE; + break; + default: + filename = AR6003_REV3_FIRMWARE_FILE; + break; + } + +get_fw: + ret = ath6kl_get_fw(ar, filename, &ar->fw, &ar->fw_len); + if (ret) { + ath6kl_err("Failed to get firmware file %s: %d\n", + filename, ret); + return ret; + } + + return 0; +} + +static int ath6kl_fetch_patch_file(struct ath6kl *ar) +{ + const char *filename; + int ret; + + switch (ar->version.target_ver) { + case AR6003_REV2_VERSION: + filename = AR6003_REV2_PATCH_FILE; + break; + case AR6004_REV1_VERSION: + /* FIXME: implement for AR6004 */ + return 0; + break; + default: + filename = AR6003_REV3_PATCH_FILE; + break; + } + + if (ar->fw_patch == NULL) { + ret = ath6kl_get_fw(ar, filename, &ar->fw_patch, + &ar->fw_patch_len); + if (ret) { + ath6kl_err("Failed to get patch file %s: %d\n", + filename, ret); + return ret; + } + } + + return 0; +} + +static int ath6kl_fetch_fw_api1(struct ath6kl *ar) +{ + int ret; + + ret = ath6kl_fetch_otp_file(ar); + if (ret) + return ret; + + ret = ath6kl_fetch_fw_file(ar); + if (ret) + return ret; + + ret = ath6kl_fetch_patch_file(ar); + if (ret) + return ret; + + return 0; +} + +static int ath6kl_fetch_fw_api2(struct ath6kl *ar) +{ + size_t magic_len, len, ie_len; + const struct firmware *fw; + struct ath6kl_fw_ie *hdr; + const char *filename; + const u8 *data; + int ret, ie_id, i, index, bit; + __le32 *val; + + switch (ar->version.target_ver) { + case AR6003_REV2_VERSION: + filename = AR6003_REV2_FIRMWARE_2_FILE; + break; + case AR6003_REV3_VERSION: + filename = AR6003_REV3_FIRMWARE_2_FILE; + break; + case AR6004_REV1_VERSION: + filename = AR6004_REV1_FIRMWARE_2_FILE; + break; + default: + return -EOPNOTSUPP; + } + + ret = request_firmware(&fw, filename, ar->dev); + if (ret) + return ret; + + data = fw->data; + len = fw->size; + + /* magic also includes the null byte, check that as well */ + magic_len = strlen(ATH6KL_FIRMWARE_MAGIC) + 1; + + if (len < magic_len) { + ret = -EINVAL; + goto out; + } + + if (memcmp(data, ATH6KL_FIRMWARE_MAGIC, magic_len) != 0) { + ret = -EINVAL; + goto out; + } + + len -= magic_len; + data += magic_len; + + /* loop elements */ + while (len > sizeof(struct ath6kl_fw_ie)) { + /* hdr is unaligned! */ + hdr = (struct ath6kl_fw_ie *) data; + + ie_id = le32_to_cpup(&hdr->id); + ie_len = le32_to_cpup(&hdr->len); + + len -= sizeof(*hdr); + data += sizeof(*hdr); + + if (len < ie_len) { + ret = -EINVAL; + goto out; + } + + switch (ie_id) { + case ATH6KL_FW_IE_OTP_IMAGE: + ath6kl_dbg(ATH6KL_DBG_BOOT, "found otp image ie (%zd B)\n", + ie_len); + + ar->fw_otp = kmemdup(data, ie_len, GFP_KERNEL); + + if (ar->fw_otp == NULL) { + ret = -ENOMEM; + goto out; + } + + ar->fw_otp_len = ie_len; + break; + case ATH6KL_FW_IE_FW_IMAGE: + ath6kl_dbg(ATH6KL_DBG_BOOT, "found fw image ie (%zd B)\n", + ie_len); + + ar->fw = kmemdup(data, ie_len, GFP_KERNEL); + + if (ar->fw == NULL) { + ret = -ENOMEM; + goto out; + } + + ar->fw_len = ie_len; + break; + case ATH6KL_FW_IE_PATCH_IMAGE: + ath6kl_dbg(ATH6KL_DBG_BOOT, "found patch image ie (%zd B)\n", + ie_len); + + ar->fw_patch = kmemdup(data, ie_len, GFP_KERNEL); + + if (ar->fw_patch == NULL) { + ret = -ENOMEM; + goto out; + } + + ar->fw_patch_len = ie_len; + break; + case ATH6KL_FW_IE_RESERVED_RAM_SIZE: + val = (__le32 *) data; + ar->hw.reserved_ram_size = le32_to_cpup(val); + + ath6kl_dbg(ATH6KL_DBG_BOOT, + "found reserved ram size ie 0x%d\n", + ar->hw.reserved_ram_size); + break; + case ATH6KL_FW_IE_CAPABILITIES: + ath6kl_dbg(ATH6KL_DBG_BOOT, + "found firmware capabilities ie (%zd B)\n", + ie_len); + + for (i = 0; i < ATH6KL_FW_CAPABILITY_MAX; i++) { + index = ALIGN(i, 8) / 8; + bit = i % 8; + + if (data[index] & (1 << bit)) + __set_bit(i, ar->fw_capabilities); + } + + ath6kl_dbg_dump(ATH6KL_DBG_BOOT, "capabilities", "", + ar->fw_capabilities, + sizeof(ar->fw_capabilities)); + break; + case ATH6KL_FW_IE_PATCH_ADDR: + if (ie_len != sizeof(*val)) + break; + + val = (__le32 *) data; + ar->hw.dataset_patch_addr = le32_to_cpup(val); + + ath6kl_dbg(ATH6KL_DBG_BOOT, + "found patch address ie 0x%d\n", + ar->hw.dataset_patch_addr); + break; + default: + ath6kl_dbg(ATH6KL_DBG_BOOT, "Unknown fw ie: %u\n", + le32_to_cpup(&hdr->id)); + break; + } + + len -= ie_len; + data += ie_len; + }; + + ret = 0; +out: + release_firmware(fw); + + return ret; +} + +static int ath6kl_fetch_firmwares(struct ath6kl *ar) +{ + int ret; + + ret = ath6kl_fetch_board_file(ar); + if (ret) + return ret; + + ret = ath6kl_fetch_fw_api2(ar); + if (ret == 0) { + ath6kl_dbg(ATH6KL_DBG_BOOT, "using fw api 2\n"); + return 0; + } + + ret = ath6kl_fetch_fw_api1(ar); + if (ret) + return ret; + + ath6kl_dbg(ATH6KL_DBG_BOOT, "using fw api 1\n"); + + return 0; +} + +static int ath6kl_upload_board_file(struct ath6kl *ar) +{ + u32 board_address, board_ext_address, param; + u32 board_data_size, board_ext_data_size; + int ret; + + if (WARN_ON(ar->fw_board == NULL)) + return -ENOENT; + + /* + * Determine where in Target RAM to write Board Data. + * For AR6004, host determine Target RAM address for + * writing board data. + */ + if (ar->target_type == TARGET_TYPE_AR6004) { + board_address = AR6004_REV1_BOARD_DATA_ADDRESS; + ath6kl_bmi_write(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_board_data)), + (u8 *) &board_address, 4); + } else { + ath6kl_bmi_read(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_board_data)), + (u8 *) &board_address, 4); + } + + /* determine where in target ram to write extended board data */ + ath6kl_bmi_read(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_board_ext_data)), + (u8 *) &board_ext_address, 4); + + if (board_ext_address == 0) { + ath6kl_err("Failed to get board file target address.\n"); + return -EINVAL; + } + + switch (ar->target_type) { + case TARGET_TYPE_AR6003: + board_data_size = AR6003_BOARD_DATA_SZ; + board_ext_data_size = AR6003_BOARD_EXT_DATA_SZ; + break; + case TARGET_TYPE_AR6004: + board_data_size = AR6004_BOARD_DATA_SZ; + board_ext_data_size = AR6004_BOARD_EXT_DATA_SZ; + break; + default: + WARN_ON(1); + return -EINVAL; + break; + } + + if (ar->fw_board_len == (board_data_size + + board_ext_data_size)) { + + /* write extended board data */ + ath6kl_dbg(ATH6KL_DBG_BOOT, + "writing extended board data to 0x%x (%d B)\n", + board_ext_address, board_ext_data_size); + + ret = ath6kl_bmi_write(ar, board_ext_address, + ar->fw_board + board_data_size, + board_ext_data_size); + if (ret) { + ath6kl_err("Failed to write extended board data: %d\n", + ret); + return ret; + } + + /* record that extended board data is initialized */ + param = (board_ext_data_size << 16) | 1; + + ath6kl_bmi_write(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_board_ext_data_config)), + (unsigned char *) ¶m, 4); + } + + if (ar->fw_board_len < board_data_size) { + ath6kl_err("Too small board file: %zu\n", ar->fw_board_len); + ret = -EINVAL; + return ret; + } + + ath6kl_dbg(ATH6KL_DBG_BOOT, "writing board file to 0x%x (%d B)\n", + board_address, board_data_size); + + ret = ath6kl_bmi_write(ar, board_address, ar->fw_board, + board_data_size); + + if (ret) { + ath6kl_err("Board file bmi write failed: %d\n", ret); + return ret; + } + + /* record the fact that Board Data IS initialized */ + param = 1; + ath6kl_bmi_write(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_board_data_initialized)), + (u8 *)¶m, 4); + + return ret; +} + +static int ath6kl_upload_otp(struct ath6kl *ar) +{ + u32 address, param; + int ret; + + if (WARN_ON(ar->fw_otp == NULL)) + return -ENOENT; + + address = ar->hw.app_load_addr; + + ath6kl_dbg(ATH6KL_DBG_BOOT, "writing otp to 0x%x (%zd B)\n", address, + ar->fw_otp_len); + + ret = ath6kl_bmi_fast_download(ar, address, ar->fw_otp, + ar->fw_otp_len); + if (ret) { + ath6kl_err("Failed to upload OTP file: %d\n", ret); + return ret; + } + + /* read firmware start address */ + ret = ath6kl_bmi_read(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_app_start)), + (u8 *) &address, sizeof(address)); + + if (ret) { + ath6kl_err("Failed to read hi_app_start: %d\n", ret); + return ret; + } + + ar->hw.app_start_override_addr = address; + + ath6kl_dbg(ATH6KL_DBG_BOOT, "app_start_override_addr 0x%x\n", + ar->hw.app_start_override_addr); + + /* execute the OTP code */ + ath6kl_dbg(ATH6KL_DBG_BOOT, "executing OTP at 0x%x\n", address); + param = 0; + ath6kl_bmi_execute(ar, address, ¶m); + + return ret; +} + +static int ath6kl_upload_firmware(struct ath6kl *ar) +{ + u32 address; + int ret; + + if (WARN_ON(ar->fw == NULL)) + return -ENOENT; + + address = ar->hw.app_load_addr; + + ath6kl_dbg(ATH6KL_DBG_BOOT, "writing firmware to 0x%x (%zd B)\n", + address, ar->fw_len); + + ret = ath6kl_bmi_fast_download(ar, address, ar->fw, ar->fw_len); + + if (ret) { + ath6kl_err("Failed to write firmware: %d\n", ret); + return ret; + } + + /* + * Set starting address for firmware + * Don't need to setup app_start override addr on AR6004 + */ + if (ar->target_type != TARGET_TYPE_AR6004) { + address = ar->hw.app_start_override_addr; + ath6kl_bmi_set_app_start(ar, address); + } + return ret; +} + +static int ath6kl_upload_patch(struct ath6kl *ar) +{ + u32 address, param; + int ret; + + if (WARN_ON(ar->fw_patch == NULL)) + return -ENOENT; + + address = ar->hw.dataset_patch_addr; + + ath6kl_dbg(ATH6KL_DBG_BOOT, "writing patch to 0x%x (%zd B)\n", + address, ar->fw_patch_len); + + ret = ath6kl_bmi_write(ar, address, ar->fw_patch, ar->fw_patch_len); + if (ret) { + ath6kl_err("Failed to write patch file: %d\n", ret); + return ret; + } + + param = address; + ath6kl_bmi_write(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_dset_list_head)), + (unsigned char *) ¶m, 4); + + return 0; +} + +static int ath6kl_init_upload(struct ath6kl *ar) +{ + u32 param, options, sleep, address; + int status = 0; + + if (ar->target_type != TARGET_TYPE_AR6003 && + ar->target_type != TARGET_TYPE_AR6004) + return -EINVAL; + + /* temporarily disable system sleep */ + address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS; + status = ath6kl_bmi_reg_read(ar, address, ¶m); + if (status) + return status; + + options = param; + + param |= ATH6KL_OPTION_SLEEP_DISABLE; + status = ath6kl_bmi_reg_write(ar, address, param); + if (status) + return status; + + address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS; + status = ath6kl_bmi_reg_read(ar, address, ¶m); + if (status) + return status; + + sleep = param; + + param |= SM(SYSTEM_SLEEP_DISABLE, 1); + status = ath6kl_bmi_reg_write(ar, address, param); + if (status) + return status; + + ath6kl_dbg(ATH6KL_DBG_TRC, "old options: %d, old sleep: %d\n", + options, sleep); + + /* program analog PLL register */ + /* no need to control 40/44MHz clock on AR6004 */ + if (ar->target_type != TARGET_TYPE_AR6004) { + status = ath6kl_bmi_reg_write(ar, ATH6KL_ANALOG_PLL_REGISTER, + 0xF9104001); + + if (status) + return status; + + /* Run at 80/88MHz by default */ + param = SM(CPU_CLOCK_STANDARD, 1); + + address = RTC_BASE_ADDRESS + CPU_CLOCK_ADDRESS; + status = ath6kl_bmi_reg_write(ar, address, param); + if (status) + return status; + } + + param = 0; + address = RTC_BASE_ADDRESS + LPO_CAL_ADDRESS; + param = SM(LPO_CAL_ENABLE, 1); + status = ath6kl_bmi_reg_write(ar, address, param); + if (status) + return status; + + /* WAR to avoid SDIO CRC err */ + if (ar->version.target_ver == AR6003_REV2_VERSION) { + ath6kl_err("temporary war to avoid sdio crc error\n"); + + param = 0x20; + + address = GPIO_BASE_ADDRESS + GPIO_PIN10_ADDRESS; + status = ath6kl_bmi_reg_write(ar, address, param); + if (status) + return status; + + address = GPIO_BASE_ADDRESS + GPIO_PIN11_ADDRESS; + status = ath6kl_bmi_reg_write(ar, address, param); + if (status) + return status; + + address = GPIO_BASE_ADDRESS + GPIO_PIN12_ADDRESS; + status = ath6kl_bmi_reg_write(ar, address, param); + if (status) + return status; + + address = GPIO_BASE_ADDRESS + GPIO_PIN13_ADDRESS; + status = ath6kl_bmi_reg_write(ar, address, param); + if (status) + return status; + } + + /* write EEPROM data to Target RAM */ + status = ath6kl_upload_board_file(ar); + if (status) + return status; + + /* transfer One time Programmable data */ + status = ath6kl_upload_otp(ar); + if (status) + return status; + + /* Download Target firmware */ + status = ath6kl_upload_firmware(ar); + if (status) + return status; + + status = ath6kl_upload_patch(ar); + if (status) + return status; + + /* Restore system sleep */ + address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS; + status = ath6kl_bmi_reg_write(ar, address, sleep); + if (status) + return status; + + address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS; + param = options | 0x20; + status = ath6kl_bmi_reg_write(ar, address, param); + if (status) + return status; + + /* Configure GPIO AR6003 UART */ + param = CONFIG_AR600x_DEBUG_UART_TX_PIN; + status = ath6kl_bmi_write(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_dbg_uart_txpin)), + (u8 *)¶m, 4); + + return status; +} + +static int ath6kl_init_hw_params(struct ath6kl *ar) +{ + switch (ar->version.target_ver) { + case AR6003_REV2_VERSION: + ar->hw.dataset_patch_addr = AR6003_REV2_DATASET_PATCH_ADDRESS; + ar->hw.app_load_addr = AR6003_REV2_APP_LOAD_ADDRESS; + ar->hw.board_ext_data_addr = AR6003_REV2_BOARD_EXT_DATA_ADDRESS; + ar->hw.reserved_ram_size = AR6003_REV2_RAM_RESERVE_SIZE; + break; + case AR6003_REV3_VERSION: + ar->hw.dataset_patch_addr = AR6003_REV3_DATASET_PATCH_ADDRESS; + ar->hw.app_load_addr = 0x1234; + ar->hw.board_ext_data_addr = AR6003_REV3_BOARD_EXT_DATA_ADDRESS; + ar->hw.reserved_ram_size = AR6003_REV3_RAM_RESERVE_SIZE; + break; + case AR6004_REV1_VERSION: + ar->hw.dataset_patch_addr = AR6003_REV2_DATASET_PATCH_ADDRESS; + ar->hw.app_load_addr = AR6003_REV3_APP_LOAD_ADDRESS; + ar->hw.board_ext_data_addr = AR6004_REV1_BOARD_EXT_DATA_ADDRESS; + ar->hw.reserved_ram_size = AR6004_REV1_RAM_RESERVE_SIZE; + break; + default: + ath6kl_err("Unsupported hardware version: 0x%x\n", + ar->version.target_ver); + return -EINVAL; + } + + ath6kl_dbg(ATH6KL_DBG_BOOT, + "target_ver 0x%x target_type 0x%x dataset_patch 0x%x app_load_addr 0x%x\n", + ar->version.target_ver, ar->target_type, + ar->hw.dataset_patch_addr, ar->hw.app_load_addr); + ath6kl_dbg(ATH6KL_DBG_BOOT, + "app_start_override_addr 0x%x board_ext_data_addr 0x%x reserved_ram_size 0x%x", + ar->hw.app_start_override_addr, ar->hw.board_ext_data_addr, + ar->hw.reserved_ram_size); + + return 0; +} + +static int ath6kl_init(struct net_device *dev) +{ + struct ath6kl *ar = ath6kl_priv(dev); + int status = 0; + s32 timeleft; + + if (!ar) + return -EIO; + + /* Do we need to finish the BMI phase */ + if (ath6kl_bmi_done(ar)) { + status = -EIO; + goto ath6kl_init_done; + } + + /* Indicate that WMI is enabled (although not ready yet) */ + set_bit(WMI_ENABLED, &ar->flag); + ar->wmi = ath6kl_wmi_init(ar); + if (!ar->wmi) { + ath6kl_err("failed to initialize wmi\n"); + status = -EIO; + goto ath6kl_init_done; + } + + ath6kl_dbg(ATH6KL_DBG_TRC, "%s: got wmi @ 0x%p.\n", __func__, ar->wmi); + + /* + * The reason we have to wait for the target here is that the + * driver layer has to init BMI in order to set the host block + * size. + */ + if (ath6kl_htc_wait_target(ar->htc_target)) { + status = -EIO; + goto err_node_cleanup; + } + + if (ath6kl_init_service_ep(ar)) { + status = -EIO; + goto err_cleanup_scatter; + } + + /* setup access class priority mappings */ + ar->ac_stream_pri_map[WMM_AC_BK] = 0; /* lowest */ + ar->ac_stream_pri_map[WMM_AC_BE] = 1; + ar->ac_stream_pri_map[WMM_AC_VI] = 2; + ar->ac_stream_pri_map[WMM_AC_VO] = 3; /* highest */ + + /* give our connected endpoints some buffers */ + ath6kl_rx_refill(ar->htc_target, ar->ctrl_ep); + ath6kl_rx_refill(ar->htc_target, ar->ac2ep_map[WMM_AC_BE]); + + /* allocate some buffers that handle larger AMSDU frames */ + ath6kl_refill_amsdu_rxbufs(ar, ATH6KL_MAX_AMSDU_RX_BUFFERS); + + /* setup credit distribution */ + ath6k_setup_credit_dist(ar->htc_target, &ar->credit_state_info); + + ath6kl_cookie_init(ar); + + /* start HTC */ + status = ath6kl_htc_start(ar->htc_target); + + if (status) { + ath6kl_cookie_cleanup(ar); + goto err_rxbuf_cleanup; + } + + /* Wait for Wmi event to be ready */ + timeleft = wait_event_interruptible_timeout(ar->event_wq, + test_bit(WMI_READY, + &ar->flag), + WMI_TIMEOUT); + + ath6kl_dbg(ATH6KL_DBG_BOOT, "firmware booted\n"); + + if (ar->version.abi_ver != ATH6KL_ABI_VERSION) { + ath6kl_err("abi version mismatch: host(0x%x), target(0x%x)\n", + ATH6KL_ABI_VERSION, ar->version.abi_ver); + status = -EIO; + goto err_htc_stop; + } + + if (!timeleft || signal_pending(current)) { + ath6kl_err("wmi is not ready or wait was interrupted\n"); + status = -EIO; + goto err_htc_stop; + } + + ath6kl_dbg(ATH6KL_DBG_TRC, "%s: wmi is ready\n", __func__); + + /* communicate the wmi protocol verision to the target */ + if ((ath6kl_set_host_app_area(ar)) != 0) + ath6kl_err("unable to set the host app area\n"); + + ar->conf_flags = ATH6KL_CONF_IGNORE_ERP_BARKER | + ATH6KL_CONF_ENABLE_11N | ATH6KL_CONF_ENABLE_TX_BURST; + + ar->wdev->wiphy->flags |= WIPHY_FLAG_SUPPORTS_FW_ROAM; + + status = ath6kl_target_config_wlan_params(ar); + if (!status) + goto ath6kl_init_done; + +err_htc_stop: + ath6kl_htc_stop(ar->htc_target); +err_rxbuf_cleanup: + ath6kl_htc_flush_rx_buf(ar->htc_target); + ath6kl_cleanup_amsdu_rxbufs(ar); +err_cleanup_scatter: + ath6kl_hif_cleanup_scatter(ar); +err_node_cleanup: + ath6kl_wmi_shutdown(ar->wmi); + clear_bit(WMI_ENABLED, &ar->flag); + ar->wmi = NULL; + +ath6kl_init_done: + return status; +} + +int ath6kl_core_init(struct ath6kl *ar) +{ + int ret = 0; + struct ath6kl_bmi_target_info targ_info; + + ar->ath6kl_wq = create_singlethread_workqueue("ath6kl"); + if (!ar->ath6kl_wq) + return -ENOMEM; + + ret = ath6kl_bmi_init(ar); + if (ret) + goto err_wq; + + ret = ath6kl_bmi_get_target_info(ar, &targ_info); + if (ret) + goto err_bmi_cleanup; + + ar->version.target_ver = le32_to_cpu(targ_info.version); + ar->target_type = le32_to_cpu(targ_info.type); + ar->wdev->wiphy->hw_version = le32_to_cpu(targ_info.version); + + ret = ath6kl_init_hw_params(ar); + if (ret) + goto err_bmi_cleanup; + + ret = ath6kl_configure_target(ar); + if (ret) + goto err_bmi_cleanup; + + ar->htc_target = ath6kl_htc_create(ar); + + if (!ar->htc_target) { + ret = -ENOMEM; + goto err_bmi_cleanup; + } + + ar->aggr_cntxt = aggr_init(ar->net_dev); + if (!ar->aggr_cntxt) { + ath6kl_err("failed to initialize aggr\n"); + ret = -ENOMEM; + goto err_htc_cleanup; + } + + ret = ath6kl_fetch_firmwares(ar); + if (ret) + goto err_htc_cleanup; + + ret = ath6kl_init_upload(ar); + if (ret) + goto err_htc_cleanup; + + ret = ath6kl_init(ar->net_dev); + if (ret) + goto err_htc_cleanup; + + /* This runs the init function if registered */ + ret = register_netdev(ar->net_dev); + if (ret) { + ath6kl_err("register_netdev failed\n"); + ath6kl_destroy(ar->net_dev, 0); + return ret; + } + + set_bit(NETDEV_REGISTERED, &ar->flag); + + ath6kl_dbg(ATH6KL_DBG_TRC, "%s: name=%s dev=0x%p, ar=0x%p\n", + __func__, ar->net_dev->name, ar->net_dev, ar); + + return ret; + +err_htc_cleanup: + ath6kl_htc_cleanup(ar->htc_target); +err_bmi_cleanup: + ath6kl_bmi_cleanup(ar); +err_wq: + destroy_workqueue(ar->ath6kl_wq); + return ret; +} + +void ath6kl_stop_txrx(struct ath6kl *ar) +{ + struct net_device *ndev = ar->net_dev; + + if (!ndev) + return; + + set_bit(DESTROY_IN_PROGRESS, &ar->flag); + + if (down_interruptible(&ar->sem)) { + ath6kl_err("down_interruptible failed\n"); + return; + } + + if (ar->wlan_pwr_state != WLAN_POWER_STATE_CUT_PWR) + ath6kl_stop_endpoint(ndev, false, true); + + clear_bit(WLAN_ENABLED, &ar->flag); +} + +/* + * We need to differentiate between the surprise and planned removal of the + * device because of the following consideration: + * + * - In case of surprise removal, the hcd already frees up the pending + * for the device and hence there is no need to unregister the function + * driver inorder to get these requests. For planned removal, the function + * driver has to explicitly unregister itself to have the hcd return all the + * pending requests before the data structures for the devices are freed up. + * Note that as per the current implementation, the function driver will + * end up releasing all the devices since there is no API to selectively + * release a particular device. + * + * - Certain commands issued to the target can be skipped for surprise + * removal since they will anyway not go through. + */ +void ath6kl_destroy(struct net_device *dev, unsigned int unregister) +{ + struct ath6kl *ar; + + if (!dev || !ath6kl_priv(dev)) { + ath6kl_err("failed to get device structure\n"); + return; + } + + ar = ath6kl_priv(dev); + + destroy_workqueue(ar->ath6kl_wq); + + if (ar->htc_target) + ath6kl_htc_cleanup(ar->htc_target); + + aggr_module_destroy(ar->aggr_cntxt); + + ath6kl_cookie_cleanup(ar); + + ath6kl_cleanup_amsdu_rxbufs(ar); + + ath6kl_bmi_cleanup(ar); + + ath6kl_debug_cleanup(ar); + + if (unregister && test_bit(NETDEV_REGISTERED, &ar->flag)) { + unregister_netdev(dev); + clear_bit(NETDEV_REGISTERED, &ar->flag); + } + + free_netdev(dev); + + kfree(ar->fw_board); + kfree(ar->fw_otp); + kfree(ar->fw); + kfree(ar->fw_patch); + + ath6kl_cfg80211_deinit(ar); +} |