1905 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2/*3 * NXP Wireless LAN device driver: major functions4 *5 * Copyright 2011-2020 NXP6 */7 8#include <linux/suspend.h>9 10#include "main.h"11#include "wmm.h"12#include "cfg80211.h"13#include "11n.h"14 15#define VERSION "1.0"16#define MFG_FIRMWARE "mwifiex_mfg.bin"17 18static unsigned int debug_mask = MWIFIEX_DEFAULT_DEBUG_MASK;19module_param(debug_mask, uint, 0);20MODULE_PARM_DESC(debug_mask, "bitmap for debug flags");21 22const char driver_version[] = "mwifiex " VERSION " (%s) ";23static char *cal_data_cfg;24module_param(cal_data_cfg, charp, 0);25 26static unsigned short driver_mode;27module_param(driver_mode, ushort, 0);28MODULE_PARM_DESC(driver_mode,29 "station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7");30 31bool mfg_mode;32module_param(mfg_mode, bool, 0);33MODULE_PARM_DESC(mfg_mode, "manufacturing mode enable:1, disable:0");34 35bool aggr_ctrl;36module_param(aggr_ctrl, bool, 0000);37MODULE_PARM_DESC(aggr_ctrl, "usb tx aggregation enable:1, disable:0");38 39const u16 mwifiex_1d_to_wmm_queue[8] = { 1, 0, 0, 1, 2, 2, 3, 3 };40 41/*42 * This function registers the device and performs all the necessary43 * initializations.44 *45 * The following initialization operations are performed -46 * - Allocate adapter structure47 * - Save interface specific operations table in adapter48 * - Call interface specific initialization routine49 * - Allocate private structures50 * - Set default adapter structure parameters51 * - Initialize locks52 *53 * In case of any errors during inittialization, this function also ensures54 * proper cleanup before exiting.55 */56static int mwifiex_register(void *card, struct device *dev,57 struct mwifiex_if_ops *if_ops, void **padapter)58{59 struct mwifiex_adapter *adapter;60 int i;61 62 adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL);63 if (!adapter)64 return -ENOMEM;65 66 *padapter = adapter;67 adapter->dev = dev;68 adapter->card = card;69 70 /* Save interface specific operations in adapter */71 memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));72 adapter->debug_mask = debug_mask;73 74 /* card specific initialization has been deferred until now .. */75 if (adapter->if_ops.init_if)76 if (adapter->if_ops.init_if(adapter))77 goto error;78 79 adapter->priv_num = 0;80 81 for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) {82 /* Allocate memory for private structure */83 adapter->priv[i] =84 kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL);85 if (!adapter->priv[i])86 goto error;87 88 adapter->priv[i]->adapter = adapter;89 adapter->priv_num++;90 }91 mwifiex_init_lock_list(adapter);92 93 timer_setup(&adapter->cmd_timer, mwifiex_cmd_timeout_func, 0);94 95 return 0;96 97error:98 mwifiex_dbg(adapter, ERROR,99 "info: leave mwifiex_register with error\n");100 101 for (i = 0; i < adapter->priv_num; i++)102 kfree(adapter->priv[i]);103 104 kfree(adapter);105 106 return -1;107}108 109/*110 * This function unregisters the device and performs all the necessary111 * cleanups.112 *113 * The following cleanup operations are performed -114 * - Free the timers115 * - Free beacon buffers116 * - Free private structures117 * - Free adapter structure118 */119static int mwifiex_unregister(struct mwifiex_adapter *adapter)120{121 s32 i;122 123 if (adapter->if_ops.cleanup_if)124 adapter->if_ops.cleanup_if(adapter);125 126 timer_shutdown_sync(&adapter->cmd_timer);127 128 /* Free private structures */129 for (i = 0; i < adapter->priv_num; i++) {130 mwifiex_free_curr_bcn(adapter->priv[i]);131 kfree(adapter->priv[i]);132 }133 134 if (adapter->nd_info) {135 for (i = 0 ; i < adapter->nd_info->n_matches ; i++)136 kfree(adapter->nd_info->matches[i]);137 kfree(adapter->nd_info);138 adapter->nd_info = NULL;139 }140 141 kfree(adapter->regd);142 143 kfree(adapter);144 return 0;145}146 147void mwifiex_queue_main_work(struct mwifiex_adapter *adapter)148{149 unsigned long flags;150 151 spin_lock_irqsave(&adapter->main_proc_lock, flags);152 if (adapter->mwifiex_processing) {153 adapter->more_task_flag = true;154 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);155 } else {156 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);157 queue_work(adapter->workqueue, &adapter->main_work);158 }159}160EXPORT_SYMBOL_GPL(mwifiex_queue_main_work);161 162static void mwifiex_queue_rx_work(struct mwifiex_adapter *adapter)163{164 spin_lock_bh(&adapter->rx_proc_lock);165 if (adapter->rx_processing) {166 spin_unlock_bh(&adapter->rx_proc_lock);167 } else {168 spin_unlock_bh(&adapter->rx_proc_lock);169 queue_work(adapter->rx_workqueue, &adapter->rx_work);170 }171}172 173static int mwifiex_process_rx(struct mwifiex_adapter *adapter)174{175 struct sk_buff *skb;176 struct mwifiex_rxinfo *rx_info;177 178 spin_lock_bh(&adapter->rx_proc_lock);179 if (adapter->rx_processing || adapter->rx_locked) {180 spin_unlock_bh(&adapter->rx_proc_lock);181 goto exit_rx_proc;182 } else {183 adapter->rx_processing = true;184 spin_unlock_bh(&adapter->rx_proc_lock);185 }186 187 /* Check for Rx data */188 while ((skb = skb_dequeue(&adapter->rx_data_q))) {189 atomic_dec(&adapter->rx_pending);190 if ((adapter->delay_main_work ||191 adapter->iface_type == MWIFIEX_USB) &&192 (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {193 if (adapter->if_ops.submit_rem_rx_urbs)194 adapter->if_ops.submit_rem_rx_urbs(adapter);195 adapter->delay_main_work = false;196 mwifiex_queue_main_work(adapter);197 }198 rx_info = MWIFIEX_SKB_RXCB(skb);199 if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) {200 if (adapter->if_ops.deaggr_pkt)201 adapter->if_ops.deaggr_pkt(adapter, skb);202 dev_kfree_skb_any(skb);203 } else {204 mwifiex_handle_rx_packet(adapter, skb);205 }206 }207 spin_lock_bh(&adapter->rx_proc_lock);208 adapter->rx_processing = false;209 spin_unlock_bh(&adapter->rx_proc_lock);210 211exit_rx_proc:212 return 0;213}214 215static void maybe_quirk_fw_disable_ds(struct mwifiex_adapter *adapter)216{217 struct mwifiex_private *priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA);218 struct mwifiex_ver_ext ver_ext;219 220 if (test_and_set_bit(MWIFIEX_IS_REQUESTING_FW_VEREXT, &adapter->work_flags))221 return;222 223 memset(&ver_ext, 0, sizeof(ver_ext));224 ver_ext.version_str_sel = 1;225 if (mwifiex_send_cmd(priv, HostCmd_CMD_VERSION_EXT,226 HostCmd_ACT_GEN_GET, 0, &ver_ext, false)) {227 mwifiex_dbg(priv->adapter, MSG,228 "Checking hardware revision failed.\n");229 }230}231 232/*233 * The main process.234 *235 * This function is the main procedure of the driver and handles various driver236 * operations. It runs in a loop and provides the core functionalities.237 *238 * The main responsibilities of this function are -239 * - Ensure concurrency control240 * - Handle pending interrupts and call interrupt handlers241 * - Wake up the card if required242 * - Handle command responses and call response handlers243 * - Handle events and call event handlers244 * - Execute pending commands245 * - Transmit pending data packets246 */247int mwifiex_main_process(struct mwifiex_adapter *adapter)248{249 int ret = 0;250 unsigned long flags;251 252 spin_lock_irqsave(&adapter->main_proc_lock, flags);253 254 /* Check if already processing */255 if (adapter->mwifiex_processing || adapter->main_locked) {256 adapter->more_task_flag = true;257 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);258 return 0;259 } else {260 adapter->mwifiex_processing = true;261 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);262 }263process_start:264 do {265 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)266 break;267 268 /* For non-USB interfaces, If we process interrupts first, it269 * would increase RX pending even further. Avoid this by270 * checking if rx_pending has crossed high threshold and271 * schedule rx work queue and then process interrupts.272 * For USB interface, there are no interrupts. We already have273 * HIGH_RX_PENDING check in usb.c274 */275 if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING &&276 adapter->iface_type != MWIFIEX_USB) {277 adapter->delay_main_work = true;278 mwifiex_queue_rx_work(adapter);279 break;280 }281 282 /* Handle pending interrupt if any */283 if (adapter->int_status) {284 if (adapter->hs_activated)285 mwifiex_process_hs_config(adapter);286 if (adapter->if_ops.process_int_status)287 adapter->if_ops.process_int_status(adapter);288 }289 290 if (adapter->rx_work_enabled && adapter->data_received)291 mwifiex_queue_rx_work(adapter);292 293 /* Need to wake up the card ? */294 if ((adapter->ps_state == PS_STATE_SLEEP) &&295 (adapter->pm_wakeup_card_req &&296 !adapter->pm_wakeup_fw_try) &&297 (is_command_pending(adapter) ||298 !skb_queue_empty(&adapter->tx_data_q) ||299 !mwifiex_bypass_txlist_empty(adapter) ||300 !mwifiex_wmm_lists_empty(adapter))) {301 adapter->pm_wakeup_fw_try = true;302 mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3));303 adapter->if_ops.wakeup(adapter);304 continue;305 }306 307 if (IS_CARD_RX_RCVD(adapter)) {308 adapter->data_received = false;309 adapter->pm_wakeup_fw_try = false;310 del_timer(&adapter->wakeup_timer);311 if (adapter->ps_state == PS_STATE_SLEEP)312 adapter->ps_state = PS_STATE_AWAKE;313 } else {314 /* We have tried to wakeup the card already */315 if (adapter->pm_wakeup_fw_try)316 break;317 if (adapter->ps_state == PS_STATE_PRE_SLEEP)318 mwifiex_check_ps_cond(adapter);319 320 if (adapter->ps_state != PS_STATE_AWAKE)321 break;322 if (adapter->tx_lock_flag) {323 if (adapter->iface_type == MWIFIEX_USB) {324 if (!adapter->usb_mc_setup)325 break;326 } else327 break;328 }329 330 if ((!adapter->scan_chan_gap_enabled &&331 adapter->scan_processing) || adapter->data_sent ||332 mwifiex_is_tdls_chan_switching333 (mwifiex_get_priv(adapter,334 MWIFIEX_BSS_ROLE_STA)) ||335 (mwifiex_wmm_lists_empty(adapter) &&336 mwifiex_bypass_txlist_empty(adapter) &&337 skb_queue_empty(&adapter->tx_data_q))) {338 if (adapter->cmd_sent || adapter->curr_cmd ||339 !mwifiex_is_send_cmd_allowed340 (mwifiex_get_priv(adapter,341 MWIFIEX_BSS_ROLE_STA)) ||342 (!is_command_pending(adapter)))343 break;344 }345 }346 347 /* Check for event */348 if (adapter->event_received) {349 adapter->event_received = false;350 mwifiex_process_event(adapter);351 }352 353 /* Check for Cmd Resp */354 if (adapter->cmd_resp_received) {355 adapter->cmd_resp_received = false;356 mwifiex_process_cmdresp(adapter);357 358 /* call mwifiex back when init_fw is done */359 if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) {360 adapter->hw_status = MWIFIEX_HW_STATUS_READY;361 mwifiex_init_fw_complete(adapter);362 maybe_quirk_fw_disable_ds(adapter);363 }364 }365 366 /* Check if we need to confirm Sleep Request367 received previously */368 if (adapter->ps_state == PS_STATE_PRE_SLEEP)369 mwifiex_check_ps_cond(adapter);370 371 /* * The ps_state may have been changed during processing of372 * Sleep Request event.373 */374 if ((adapter->ps_state == PS_STATE_SLEEP) ||375 (adapter->ps_state == PS_STATE_PRE_SLEEP) ||376 (adapter->ps_state == PS_STATE_SLEEP_CFM)) {377 continue;378 }379 380 if (adapter->tx_lock_flag) {381 if (adapter->iface_type == MWIFIEX_USB) {382 if (!adapter->usb_mc_setup)383 continue;384 } else385 continue;386 }387 388 if (!adapter->cmd_sent && !adapter->curr_cmd &&389 mwifiex_is_send_cmd_allowed390 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {391 if (mwifiex_exec_next_cmd(adapter) == -1) {392 ret = -1;393 break;394 }395 }396 397 /** If USB Multi channel setup ongoing,398 * wait for ready to tx data.399 */400 if (adapter->iface_type == MWIFIEX_USB &&401 adapter->usb_mc_setup)402 continue;403 404 if ((adapter->scan_chan_gap_enabled ||405 !adapter->scan_processing) &&406 !adapter->data_sent &&407 !skb_queue_empty(&adapter->tx_data_q)) {408 if (adapter->hs_activated_manually) {409 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY),410 MWIFIEX_ASYNC_CMD);411 adapter->hs_activated_manually = false;412 }413 414 mwifiex_process_tx_queue(adapter);415 if (adapter->hs_activated) {416 clear_bit(MWIFIEX_IS_HS_CONFIGURED,417 &adapter->work_flags);418 mwifiex_hs_activated_event419 (mwifiex_get_priv420 (adapter, MWIFIEX_BSS_ROLE_ANY),421 false);422 }423 }424 425 if ((adapter->scan_chan_gap_enabled ||426 !adapter->scan_processing) &&427 !adapter->data_sent &&428 !mwifiex_bypass_txlist_empty(adapter) &&429 !mwifiex_is_tdls_chan_switching430 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {431 if (adapter->hs_activated_manually) {432 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY),433 MWIFIEX_ASYNC_CMD);434 adapter->hs_activated_manually = false;435 }436 437 mwifiex_process_bypass_tx(adapter);438 if (adapter->hs_activated) {439 clear_bit(MWIFIEX_IS_HS_CONFIGURED,440 &adapter->work_flags);441 mwifiex_hs_activated_event442 (mwifiex_get_priv443 (adapter, MWIFIEX_BSS_ROLE_ANY),444 false);445 }446 }447 448 if ((adapter->scan_chan_gap_enabled ||449 !adapter->scan_processing) &&450 !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) &&451 !mwifiex_is_tdls_chan_switching452 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {453 if (adapter->hs_activated_manually) {454 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY),455 MWIFIEX_ASYNC_CMD);456 adapter->hs_activated_manually = false;457 }458 459 mwifiex_wmm_process_tx(adapter);460 if (adapter->hs_activated) {461 clear_bit(MWIFIEX_IS_HS_CONFIGURED,462 &adapter->work_flags);463 mwifiex_hs_activated_event464 (mwifiex_get_priv465 (adapter, MWIFIEX_BSS_ROLE_ANY),466 false);467 }468 }469 470 if (adapter->delay_null_pkt && !adapter->cmd_sent &&471 !adapter->curr_cmd && !is_command_pending(adapter) &&472 (mwifiex_wmm_lists_empty(adapter) &&473 mwifiex_bypass_txlist_empty(adapter) &&474 skb_queue_empty(&adapter->tx_data_q))) {475 if (!mwifiex_send_null_packet476 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),477 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |478 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) {479 adapter->delay_null_pkt = false;480 adapter->ps_state = PS_STATE_SLEEP;481 }482 break;483 }484 } while (true);485 486 spin_lock_irqsave(&adapter->main_proc_lock, flags);487 if (adapter->more_task_flag) {488 adapter->more_task_flag = false;489 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);490 goto process_start;491 }492 adapter->mwifiex_processing = false;493 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);494 495 return ret;496}497EXPORT_SYMBOL_GPL(mwifiex_main_process);498 499/*500 * This function frees the adapter structure.501 *502 * Additionally, this closes the netlink socket, frees the timers503 * and private structures.504 */505static void mwifiex_free_adapter(struct mwifiex_adapter *adapter)506{507 if (!adapter) {508 pr_err("%s: adapter is NULL\n", __func__);509 return;510 }511 512 mwifiex_unregister(adapter);513 pr_debug("info: %s: free adapter\n", __func__);514}515 516/*517 * This function cancels all works in the queue and destroys518 * the main workqueue.519 */520static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter)521{522 if (adapter->workqueue) {523 destroy_workqueue(adapter->workqueue);524 adapter->workqueue = NULL;525 }526 527 if (adapter->rx_workqueue) {528 destroy_workqueue(adapter->rx_workqueue);529 adapter->rx_workqueue = NULL;530 }531 532 if (adapter->host_mlme_workqueue) {533 destroy_workqueue(adapter->host_mlme_workqueue);534 adapter->host_mlme_workqueue = NULL;535 }536}537 538/*539 * This function gets firmware and initializes it.540 *541 * The main initialization steps followed are -542 * - Download the correct firmware to card543 * - Issue the init commands to firmware544 */545static int _mwifiex_fw_dpc(const struct firmware *firmware, void *context)546{547 int ret;548 char fmt[64];549 struct mwifiex_adapter *adapter = context;550 struct mwifiex_fw_image fw;551 bool init_failed = false;552 struct wireless_dev *wdev;553 struct completion *fw_done = adapter->fw_done;554 555 if (!firmware) {556 mwifiex_dbg(adapter, ERROR,557 "Failed to get firmware %s\n", adapter->fw_name);558 goto err_dnld_fw;559 }560 561 memset(&fw, 0, sizeof(struct mwifiex_fw_image));562 adapter->firmware = firmware;563 fw.fw_buf = (u8 *) adapter->firmware->data;564 fw.fw_len = adapter->firmware->size;565 566 if (adapter->if_ops.dnld_fw) {567 ret = adapter->if_ops.dnld_fw(adapter, &fw);568 } else {569 ret = mwifiex_dnld_fw(adapter, &fw);570 }571 572 if (ret == -1)573 goto err_dnld_fw;574 575 mwifiex_dbg(adapter, MSG, "WLAN FW is active\n");576 577 if (cal_data_cfg) {578 if ((request_firmware(&adapter->cal_data, cal_data_cfg,579 adapter->dev)) < 0)580 mwifiex_dbg(adapter, ERROR,581 "Cal data request_firmware() failed\n");582 }583 584 /* enable host interrupt after fw dnld is successful */585 if (adapter->if_ops.enable_int) {586 if (adapter->if_ops.enable_int(adapter))587 goto err_dnld_fw;588 }589 590 adapter->init_wait_q_woken = false;591 ret = mwifiex_init_fw(adapter);592 if (ret == -1) {593 goto err_init_fw;594 } else if (!ret) {595 adapter->hw_status = MWIFIEX_HW_STATUS_READY;596 goto done;597 }598 /* Wait for mwifiex_init to complete */599 if (!adapter->mfg_mode) {600 wait_event_interruptible(adapter->init_wait_q,601 adapter->init_wait_q_woken);602 if (adapter->hw_status != MWIFIEX_HW_STATUS_READY)603 goto err_init_fw;604 }605 606 if (!adapter->wiphy) {607 if (mwifiex_register_cfg80211(adapter)) {608 mwifiex_dbg(adapter, ERROR,609 "cannot register with cfg80211\n");610 goto err_init_fw;611 }612 }613 614 if (mwifiex_init_channel_scan_gap(adapter)) {615 mwifiex_dbg(adapter, ERROR,616 "could not init channel stats table\n");617 goto err_init_chan_scan;618 }619 620 if (driver_mode) {621 driver_mode &= MWIFIEX_DRIVER_MODE_BITMASK;622 driver_mode |= MWIFIEX_DRIVER_MODE_STA;623 }624 625 rtnl_lock();626 wiphy_lock(adapter->wiphy);627 /* Create station interface by default */628 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM,629 NL80211_IFTYPE_STATION, NULL);630 if (IS_ERR(wdev)) {631 mwifiex_dbg(adapter, ERROR,632 "cannot create default STA interface\n");633 wiphy_unlock(adapter->wiphy);634 rtnl_unlock();635 goto err_add_intf;636 }637 638 if (driver_mode & MWIFIEX_DRIVER_MODE_UAP) {639 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM,640 NL80211_IFTYPE_AP, NULL);641 if (IS_ERR(wdev)) {642 mwifiex_dbg(adapter, ERROR,643 "cannot create AP interface\n");644 wiphy_unlock(adapter->wiphy);645 rtnl_unlock();646 goto err_add_intf;647 }648 }649 650 if (driver_mode & MWIFIEX_DRIVER_MODE_P2P) {651 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", NET_NAME_ENUM,652 NL80211_IFTYPE_P2P_CLIENT, NULL);653 if (IS_ERR(wdev)) {654 mwifiex_dbg(adapter, ERROR,655 "cannot create p2p client interface\n");656 wiphy_unlock(adapter->wiphy);657 rtnl_unlock();658 goto err_add_intf;659 }660 }661 wiphy_unlock(adapter->wiphy);662 rtnl_unlock();663 664 mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);665 mwifiex_dbg(adapter, MSG, "driver_version = %s\n", fmt);666 adapter->is_up = true;667 goto done;668 669err_add_intf:670 vfree(adapter->chan_stats);671err_init_chan_scan:672 wiphy_unregister(adapter->wiphy);673 wiphy_free(adapter->wiphy);674err_init_fw:675 if (adapter->if_ops.disable_int)676 adapter->if_ops.disable_int(adapter);677err_dnld_fw:678 mwifiex_dbg(adapter, ERROR,679 "info: %s: unregister device\n", __func__);680 if (adapter->if_ops.unregister_dev)681 adapter->if_ops.unregister_dev(adapter);682 683 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);684 mwifiex_terminate_workqueue(adapter);685 686 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {687 pr_debug("info: %s: shutdown mwifiex\n", __func__);688 mwifiex_shutdown_drv(adapter);689 mwifiex_free_cmd_buffers(adapter);690 }691 692 init_failed = true;693done:694 if (adapter->cal_data) {695 release_firmware(adapter->cal_data);696 adapter->cal_data = NULL;697 }698 if (adapter->firmware) {699 release_firmware(adapter->firmware);700 adapter->firmware = NULL;701 }702 if (init_failed) {703 if (adapter->irq_wakeup >= 0)704 device_init_wakeup(adapter->dev, false);705 mwifiex_free_adapter(adapter);706 }707 /* Tell all current and future waiters we're finished */708 complete_all(fw_done);709 710 return init_failed ? -EIO : 0;711}712 713static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)714{715 _mwifiex_fw_dpc(firmware, context);716}717 718/*719 * This function gets the firmware and (if called asynchronously) kicks off the720 * HW init when done.721 */722static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter,723 bool req_fw_nowait)724{725 int ret;726 727 /* Override default firmware with manufacturing one if728 * manufacturing mode is enabled729 */730 if (mfg_mode)731 strscpy(adapter->fw_name, MFG_FIRMWARE,732 sizeof(adapter->fw_name));733 734 if (req_fw_nowait) {735 ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name,736 adapter->dev, GFP_KERNEL, adapter,737 mwifiex_fw_dpc);738 } else {739 ret = request_firmware(&adapter->firmware,740 adapter->fw_name,741 adapter->dev);742 }743 744 if (ret < 0)745 mwifiex_dbg(adapter, ERROR, "request_firmware%s error %d\n",746 req_fw_nowait ? "_nowait" : "", ret);747 return ret;748}749 750/*751 * CFG802.11 network device handler for open.752 *753 * Starts the data queue.754 */755static int756mwifiex_open(struct net_device *dev)757{758 netif_carrier_off(dev);759 760 return 0;761}762 763/*764 * CFG802.11 network device handler for close.765 */766static int767mwifiex_close(struct net_device *dev)768{769 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);770 771 if (priv->scan_request) {772 struct cfg80211_scan_info info = {773 .aborted = true,774 };775 776 mwifiex_dbg(priv->adapter, INFO,777 "aborting scan on ndo_stop\n");778 cfg80211_scan_done(priv->scan_request, &info);779 priv->scan_request = NULL;780 priv->scan_aborting = true;781 }782 783 if (priv->sched_scanning) {784 mwifiex_dbg(priv->adapter, INFO,785 "aborting bgscan on ndo_stop\n");786 mwifiex_stop_bg_scan(priv);787 cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);788 }789 790 return 0;791}792 793static bool794mwifiex_bypass_tx_queue(struct mwifiex_private *priv,795 struct sk_buff *skb)796{797 struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;798 799 if (ntohs(eth_hdr->h_proto) == ETH_P_PAE ||800 mwifiex_is_skb_mgmt_frame(skb) ||801 (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&802 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&803 (ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) {804 mwifiex_dbg(priv->adapter, DATA,805 "bypass txqueue; eth type %#x, mgmt %d\n",806 ntohs(eth_hdr->h_proto),807 mwifiex_is_skb_mgmt_frame(skb));808 if (eth_hdr->h_proto == htons(ETH_P_PAE))809 mwifiex_dbg(priv->adapter, MSG,810 "key: send EAPOL to %pM\n",811 eth_hdr->h_dest);812 return true;813 }814 815 return false;816}817/*818 * Add buffer into wmm tx queue and queue work to transmit it.819 */820int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)821{822 struct netdev_queue *txq;823 int index = mwifiex_1d_to_wmm_queue[skb->priority];824 825 if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) {826 txq = netdev_get_tx_queue(priv->netdev, index);827 if (!netif_tx_queue_stopped(txq)) {828 netif_tx_stop_queue(txq);829 mwifiex_dbg(priv->adapter, DATA,830 "stop queue: %d\n", index);831 }832 }833 834 if (mwifiex_bypass_tx_queue(priv, skb)) {835 atomic_inc(&priv->adapter->tx_pending);836 atomic_inc(&priv->adapter->bypass_tx_pending);837 mwifiex_wmm_add_buf_bypass_txqueue(priv, skb);838 } else {839 atomic_inc(&priv->adapter->tx_pending);840 mwifiex_wmm_add_buf_txqueue(priv, skb);841 }842 843 mwifiex_queue_main_work(priv->adapter);844 845 return 0;846}847 848struct sk_buff *849mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv,850 struct sk_buff *skb, u8 flag, u64 *cookie)851{852 struct sk_buff *orig_skb = skb;853 struct mwifiex_txinfo *tx_info, *orig_tx_info;854 855 skb = skb_clone(skb, GFP_ATOMIC);856 if (skb) {857 int id;858 859 spin_lock_bh(&priv->ack_status_lock);860 id = idr_alloc(&priv->ack_status_frames, orig_skb,861 1, 0x10, GFP_ATOMIC);862 spin_unlock_bh(&priv->ack_status_lock);863 864 if (id >= 0) {865 tx_info = MWIFIEX_SKB_TXCB(skb);866 tx_info->ack_frame_id = id;867 tx_info->flags |= flag;868 orig_tx_info = MWIFIEX_SKB_TXCB(orig_skb);869 orig_tx_info->ack_frame_id = id;870 orig_tx_info->flags |= flag;871 872 if (flag == MWIFIEX_BUF_FLAG_ACTION_TX_STATUS && cookie)873 orig_tx_info->cookie = *cookie;874 875 } else if (skb_shared(skb)) {876 kfree_skb(orig_skb);877 } else {878 kfree_skb(skb);879 skb = orig_skb;880 }881 } else {882 /* couldn't clone -- lose tx status ... */883 skb = orig_skb;884 }885 886 return skb;887}888 889/*890 * CFG802.11 network device handler for data transmission.891 */892static netdev_tx_t893mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)894{895 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);896 struct sk_buff *new_skb;897 struct mwifiex_txinfo *tx_info;898 bool multicast;899 900 mwifiex_dbg(priv->adapter, DATA,901 "data: %lu BSS(%d-%d): Data <= kernel\n",902 jiffies, priv->bss_type, priv->bss_num);903 904 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &priv->adapter->work_flags)) {905 kfree_skb(skb);906 priv->stats.tx_dropped++;907 return 0;908 }909 if (!skb->len || (skb->len > ETH_FRAME_LEN)) {910 mwifiex_dbg(priv->adapter, ERROR,911 "Tx: bad skb len %d\n", skb->len);912 kfree_skb(skb);913 priv->stats.tx_dropped++;914 return 0;915 }916 if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) {917 mwifiex_dbg(priv->adapter, DATA,918 "data: Tx: insufficient skb headroom %d\n",919 skb_headroom(skb));920 /* Insufficient skb headroom - allocate a new skb */921 new_skb =922 skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN);923 if (unlikely(!new_skb)) {924 mwifiex_dbg(priv->adapter, ERROR,925 "Tx: cannot alloca new_skb\n");926 kfree_skb(skb);927 priv->stats.tx_dropped++;928 return 0;929 }930 kfree_skb(skb);931 skb = new_skb;932 mwifiex_dbg(priv->adapter, INFO,933 "info: new skb headroomd %d\n",934 skb_headroom(skb));935 }936 937 tx_info = MWIFIEX_SKB_TXCB(skb);938 memset(tx_info, 0, sizeof(*tx_info));939 tx_info->bss_num = priv->bss_num;940 tx_info->bss_type = priv->bss_type;941 tx_info->pkt_len = skb->len;942 943 multicast = is_multicast_ether_addr(skb->data);944 945 if (unlikely(!multicast && skb->sk &&946 skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS &&947 priv->adapter->fw_api_ver == MWIFIEX_FW_V15))948 skb = mwifiex_clone_skb_for_tx_status(priv,949 skb,950 MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS, NULL);951 952 /* Record the current time the packet was queued; used to953 * determine the amount of time the packet was queued in954 * the driver before it was sent to the firmware.955 * The delay is then sent along with the packet to the956 * firmware for aggregate delay calculation for stats and957 * MSDU lifetime expiry.958 */959 __net_timestamp(skb);960 961 if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&962 priv->bss_type == MWIFIEX_BSS_TYPE_STA &&963 !ether_addr_equal_unaligned(priv->cfg_bssid, skb->data)) {964 if (priv->adapter->auto_tdls && priv->check_tdls_tx)965 mwifiex_tdls_check_tx(priv, skb);966 }967 968 mwifiex_queue_tx_pkt(priv, skb);969 970 return 0;971}972 973int mwifiex_set_mac_address(struct mwifiex_private *priv,974 struct net_device *dev, bool external,975 u8 *new_mac)976{977 int ret;978 u64 mac_addr, old_mac_addr;979 980 old_mac_addr = ether_addr_to_u64(priv->curr_addr);981 982 if (external) {983 mac_addr = ether_addr_to_u64(new_mac);984 } else {985 /* Internal mac address change */986 if (priv->bss_type == MWIFIEX_BSS_TYPE_ANY)987 return -EOPNOTSUPP;988 989 mac_addr = old_mac_addr;990 991 if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) {992 mac_addr |= BIT_ULL(MWIFIEX_MAC_LOCAL_ADMIN_BIT);993 mac_addr += priv->bss_num;994 } else if (priv->adapter->priv[0] != priv) {995 /* Set mac address based on bss_type/bss_num */996 mac_addr ^= BIT_ULL(priv->bss_type + 8);997 mac_addr += priv->bss_num;998 }999 }1000 1001 u64_to_ether_addr(mac_addr, priv->curr_addr);1002 1003 /* Send request to firmware */1004 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS,1005 HostCmd_ACT_GEN_SET, 0, NULL, true);1006 1007 if (ret) {1008 u64_to_ether_addr(old_mac_addr, priv->curr_addr);1009 mwifiex_dbg(priv->adapter, ERROR,1010 "set mac address failed: ret=%d\n", ret);1011 return ret;1012 }1013 1014 eth_hw_addr_set(dev, priv->curr_addr);1015 return 0;1016}1017 1018/* CFG802.11 network device handler for setting MAC address.1019 */1020static int1021mwifiex_ndo_set_mac_address(struct net_device *dev, void *addr)1022{1023 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);1024 struct sockaddr *hw_addr = addr;1025 1026 return mwifiex_set_mac_address(priv, dev, true, hw_addr->sa_data);1027}1028 1029/*1030 * CFG802.11 network device handler for setting multicast list.1031 */1032static void mwifiex_set_multicast_list(struct net_device *dev)1033{1034 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);1035 struct mwifiex_multicast_list mcast_list;1036 1037 if (dev->flags & IFF_PROMISC) {1038 mcast_list.mode = MWIFIEX_PROMISC_MODE;1039 } else if (dev->flags & IFF_ALLMULTI ||1040 netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) {1041 mcast_list.mode = MWIFIEX_ALL_MULTI_MODE;1042 } else {1043 mcast_list.mode = MWIFIEX_MULTICAST_MODE;1044 mcast_list.num_multicast_addr =1045 mwifiex_copy_mcast_addr(&mcast_list, dev);1046 }1047 mwifiex_request_set_multicast_list(priv, &mcast_list);1048}1049 1050/*1051 * CFG802.11 network device handler for transmission timeout.1052 */1053static void1054mwifiex_tx_timeout(struct net_device *dev, unsigned int txqueue)1055{1056 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);1057 1058 priv->num_tx_timeout++;1059 priv->tx_timeout_cnt++;1060 mwifiex_dbg(priv->adapter, ERROR,1061 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",1062 jiffies, priv->tx_timeout_cnt, priv->bss_type,1063 priv->bss_num);1064 mwifiex_set_trans_start(dev);1065 1066 if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&1067 priv->adapter->if_ops.card_reset) {1068 mwifiex_dbg(priv->adapter, ERROR,1069 "tx_timeout_cnt exceeds threshold.\t"1070 "Triggering card reset!\n");1071 priv->adapter->if_ops.card_reset(priv->adapter);1072 }1073}1074 1075void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter)1076{1077 struct usb_card_rec *card = adapter->card;1078 struct mwifiex_private *priv;1079 u16 tx_buf_size;1080 int i, ret;1081 1082 card->mc_resync_flag = true;1083 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {1084 if (atomic_read(&card->port[i].tx_data_urb_pending)) {1085 mwifiex_dbg(adapter, WARN, "pending data urb in sys\n");1086 return;1087 }1088 }1089 1090 card->mc_resync_flag = false;1091 tx_buf_size = 0xffff;1092 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);1093 ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF,1094 HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false);1095 if (ret)1096 mwifiex_dbg(adapter, ERROR,1097 "send reconfig tx buf size cmd err\n");1098}1099EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync);1100 1101void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter)1102{1103 /* Dump all the memory data into single file, a userspace script will1104 * be used to split all the memory data to multiple files1105 */1106 mwifiex_dbg(adapter, MSG,1107 "== mwifiex dump information to /sys/class/devcoredump start\n");1108 dev_coredumpv(adapter->dev, adapter->devdump_data, adapter->devdump_len,1109 GFP_KERNEL);1110 mwifiex_dbg(adapter, MSG,1111 "== mwifiex dump information to /sys/class/devcoredump end\n");1112 1113 /* Device dump data will be freed in device coredump release function1114 * after 5 min. Here reset adapter->devdump_data and ->devdump_len1115 * to avoid it been accidentally reused.1116 */1117 adapter->devdump_data = NULL;1118 adapter->devdump_len = 0;1119}1120EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump);1121 1122void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter)1123{1124 char *p;1125 char drv_version[64];1126 struct usb_card_rec *cardp;1127 struct sdio_mmc_card *sdio_card;1128 struct mwifiex_private *priv;1129 int i, idx;1130 struct netdev_queue *txq;1131 struct mwifiex_debug_info *debug_info;1132 1133 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n");1134 1135 p = adapter->devdump_data;1136 strcpy(p, "========Start dump driverinfo========\n");1137 p += strlen("========Start dump driverinfo========\n");1138 p += sprintf(p, "driver_name = " "\"mwifiex\"\n");1139 1140 mwifiex_drv_get_driver_version(adapter, drv_version,1141 sizeof(drv_version) - 1);1142 p += sprintf(p, "driver_version = %s\n", drv_version);1143 1144 if (adapter->iface_type == MWIFIEX_USB) {1145 cardp = (struct usb_card_rec *)adapter->card;1146 p += sprintf(p, "tx_cmd_urb_pending = %d\n",1147 atomic_read(&cardp->tx_cmd_urb_pending));1148 p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n",1149 atomic_read(&cardp->port[0].tx_data_urb_pending));1150 p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n",1151 atomic_read(&cardp->port[1].tx_data_urb_pending));1152 p += sprintf(p, "rx_cmd_urb_pending = %d\n",1153 atomic_read(&cardp->rx_cmd_urb_pending));1154 p += sprintf(p, "rx_data_urb_pending = %d\n",1155 atomic_read(&cardp->rx_data_urb_pending));1156 }1157 1158 p += sprintf(p, "tx_pending = %d\n",1159 atomic_read(&adapter->tx_pending));1160 p += sprintf(p, "rx_pending = %d\n",1161 atomic_read(&adapter->rx_pending));1162 1163 if (adapter->iface_type == MWIFIEX_SDIO) {1164 sdio_card = (struct sdio_mmc_card *)adapter->card;1165 p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",1166 sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port);1167 p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",1168 sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port);1169 }1170 1171 for (i = 0; i < adapter->priv_num; i++) {1172 if (!adapter->priv[i]->netdev)1173 continue;1174 priv = adapter->priv[i];1175 p += sprintf(p, "\n[interface : \"%s\"]\n",1176 priv->netdev->name);1177 p += sprintf(p, "wmm_tx_pending[0] = %d\n",1178 atomic_read(&priv->wmm_tx_pending[0]));1179 p += sprintf(p, "wmm_tx_pending[1] = %d\n",1180 atomic_read(&priv->wmm_tx_pending[1]));1181 p += sprintf(p, "wmm_tx_pending[2] = %d\n",1182 atomic_read(&priv->wmm_tx_pending[2]));1183 p += sprintf(p, "wmm_tx_pending[3] = %d\n",1184 atomic_read(&priv->wmm_tx_pending[3]));1185 p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ?1186 "Disconnected" : "Connected");1187 p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev)1188 ? "on" : "off"));1189 for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) {1190 txq = netdev_get_tx_queue(priv->netdev, idx);1191 p += sprintf(p, "tx queue %d:%s ", idx,1192 netif_tx_queue_stopped(txq) ?1193 "stopped" : "started");1194 }1195 p += sprintf(p, "\n%s: num_tx_timeout = %d\n",1196 priv->netdev->name, priv->num_tx_timeout);1197 }1198 1199 if (adapter->iface_type == MWIFIEX_SDIO ||1200 adapter->iface_type == MWIFIEX_PCIE) {1201 p += sprintf(p, "\n=== %s register dump===\n",1202 adapter->iface_type == MWIFIEX_SDIO ?1203 "SDIO" : "PCIE");1204 if (adapter->if_ops.reg_dump)1205 p += adapter->if_ops.reg_dump(adapter, p);1206 }1207 p += sprintf(p, "\n=== more debug information\n");1208 debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);1209 if (debug_info) {1210 for (i = 0; i < adapter->priv_num; i++) {1211 if (!adapter->priv[i]->netdev)1212 continue;1213 priv = adapter->priv[i];1214 mwifiex_get_debug_info(priv, debug_info);1215 p += mwifiex_debug_info_to_buffer(priv, p, debug_info);1216 break;1217 }1218 kfree(debug_info);1219 }1220 1221 strcpy(p, "\n========End dump========\n");1222 p += strlen("\n========End dump========\n");1223 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n");1224 adapter->devdump_len = p - (char *)adapter->devdump_data;1225}1226EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump);1227 1228void mwifiex_prepare_fw_dump_info(struct mwifiex_adapter *adapter)1229{1230 u8 idx;1231 char *fw_dump_ptr;1232 u32 dump_len = 0;1233 1234 for (idx = 0; idx < adapter->num_mem_types; idx++) {1235 struct memory_type_mapping *entry =1236 &adapter->mem_type_mapping_tbl[idx];1237 1238 if (entry->mem_ptr) {1239 dump_len += (strlen("========Start dump ") +1240 strlen(entry->mem_name) +1241 strlen("========\n") +1242 (entry->mem_size + 1) +1243 strlen("\n========End dump========\n"));1244 }1245 }1246 1247 if (dump_len + 1 + adapter->devdump_len > MWIFIEX_FW_DUMP_SIZE) {1248 /* Realloc in case buffer overflow */1249 fw_dump_ptr = vzalloc(dump_len + 1 + adapter->devdump_len);1250 mwifiex_dbg(adapter, MSG, "Realloc device dump data.\n");1251 if (!fw_dump_ptr) {1252 vfree(adapter->devdump_data);1253 mwifiex_dbg(adapter, ERROR,1254 "vzalloc devdump data failure!\n");1255 return;1256 }1257 1258 memmove(fw_dump_ptr, adapter->devdump_data,1259 adapter->devdump_len);1260 vfree(adapter->devdump_data);1261 adapter->devdump_data = fw_dump_ptr;1262 }1263 1264 fw_dump_ptr = (char *)adapter->devdump_data + adapter->devdump_len;1265 1266 for (idx = 0; idx < adapter->num_mem_types; idx++) {1267 struct memory_type_mapping *entry =1268 &adapter->mem_type_mapping_tbl[idx];1269 1270 if (entry->mem_ptr) {1271 strcpy(fw_dump_ptr, "========Start dump ");1272 fw_dump_ptr += strlen("========Start dump ");1273 1274 strcpy(fw_dump_ptr, entry->mem_name);1275 fw_dump_ptr += strlen(entry->mem_name);1276 1277 strcpy(fw_dump_ptr, "========\n");1278 fw_dump_ptr += strlen("========\n");1279 1280 memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);1281 fw_dump_ptr += entry->mem_size;1282 1283 strcpy(fw_dump_ptr, "\n========End dump========\n");1284 fw_dump_ptr += strlen("\n========End dump========\n");1285 }1286 }1287 1288 adapter->devdump_len = fw_dump_ptr - (char *)adapter->devdump_data;1289 1290 for (idx = 0; idx < adapter->num_mem_types; idx++) {1291 struct memory_type_mapping *entry =1292 &adapter->mem_type_mapping_tbl[idx];1293 1294 vfree(entry->mem_ptr);1295 entry->mem_ptr = NULL;1296 entry->mem_size = 0;1297 }1298}1299EXPORT_SYMBOL_GPL(mwifiex_prepare_fw_dump_info);1300 1301/*1302 * CFG802.11 network device handler for statistics retrieval.1303 */1304static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)1305{1306 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);1307 1308 return &priv->stats;1309}1310 1311static u161312mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb,1313 struct net_device *sb_dev)1314{1315 skb->priority = cfg80211_classify8021d(skb, NULL);1316 return mwifiex_1d_to_wmm_queue[skb->priority];1317}1318 1319/* Network device handlers */1320static const struct net_device_ops mwifiex_netdev_ops = {1321 .ndo_open = mwifiex_open,1322 .ndo_stop = mwifiex_close,1323 .ndo_start_xmit = mwifiex_hard_start_xmit,1324 .ndo_set_mac_address = mwifiex_ndo_set_mac_address,1325 .ndo_validate_addr = eth_validate_addr,1326 .ndo_tx_timeout = mwifiex_tx_timeout,1327 .ndo_get_stats = mwifiex_get_stats,1328 .ndo_set_rx_mode = mwifiex_set_multicast_list,1329 .ndo_select_queue = mwifiex_netdev_select_wmm_queue,1330};1331 1332/*1333 * This function initializes the private structure parameters.1334 *1335 * The following wait queues are initialized -1336 * - IOCTL wait queue1337 * - Command wait queue1338 * - Statistics wait queue1339 *1340 * ...and the following default parameters are set -1341 * - Current key index : Set to 01342 * - Rate index : Set to auto1343 * - Media connected : Set to disconnected1344 * - Adhoc link sensed : Set to false1345 * - Nick name : Set to null1346 * - Number of Tx timeout : Set to 01347 * - Device address : Set to current address1348 * - Rx histogram statistc : Set to 01349 *1350 * In addition, the CFG80211 work queue is also created.1351 */1352void mwifiex_init_priv_params(struct mwifiex_private *priv,1353 struct net_device *dev)1354{1355 dev->netdev_ops = &mwifiex_netdev_ops;1356 dev->needs_free_netdev = true;1357 /* Initialize private structure */1358 priv->current_key_index = 0;1359 priv->media_connected = false;1360 memset(priv->mgmt_ie, 0,1361 sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX);1362 priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK;1363 priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK;1364 priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK;1365 priv->gen_idx = MWIFIEX_AUTO_IDX_MASK;1366 priv->num_tx_timeout = 0;1367 if (is_valid_ether_addr(dev->dev_addr))1368 ether_addr_copy(priv->curr_addr, dev->dev_addr);1369 else1370 ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr);1371 1372 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||1373 GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {1374 priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL);1375 if (priv->hist_data)1376 mwifiex_hist_data_reset(priv);1377 }1378}1379 1380/*1381 * This function check if command is pending.1382 */1383int is_command_pending(struct mwifiex_adapter *adapter)1384{1385 int is_cmd_pend_q_empty;1386 1387 spin_lock_bh(&adapter->cmd_pending_q_lock);1388 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);1389 spin_unlock_bh(&adapter->cmd_pending_q_lock);1390 1391 return !is_cmd_pend_q_empty;1392}1393 1394/* This is the host mlme work queue function.1395 * It handles the host mlme operations.1396 */1397static void mwifiex_host_mlme_work_queue(struct work_struct *work)1398{1399 struct mwifiex_adapter *adapter =1400 container_of(work, struct mwifiex_adapter, host_mlme_work);1401 1402 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))1403 return;1404 1405 /* Check for host mlme disconnection */1406 if (adapter->host_mlme_link_lost) {1407 if (adapter->priv_link_lost) {1408 mwifiex_reset_connect_state(adapter->priv_link_lost,1409 WLAN_REASON_DEAUTH_LEAVING,1410 true);1411 adapter->priv_link_lost = NULL;1412 }1413 adapter->host_mlme_link_lost = false;1414 }1415 1416 /* Check for host mlme Assoc Resp */1417 if (adapter->assoc_resp_received) {1418 mwifiex_process_assoc_resp(adapter);1419 adapter->assoc_resp_received = false;1420 }1421}1422 1423/*1424 * This is the RX work queue function.1425 *1426 * It handles the RX operations.1427 */1428static void mwifiex_rx_work_queue(struct work_struct *work)1429{1430 struct mwifiex_adapter *adapter =1431 container_of(work, struct mwifiex_adapter, rx_work);1432 1433 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))1434 return;1435 mwifiex_process_rx(adapter);1436}1437 1438/*1439 * This is the main work queue function.1440 *1441 * It handles the main process, which in turn handles the complete1442 * driver operations.1443 */1444static void mwifiex_main_work_queue(struct work_struct *work)1445{1446 struct mwifiex_adapter *adapter =1447 container_of(work, struct mwifiex_adapter, main_work);1448 1449 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))1450 return;1451 mwifiex_main_process(adapter);1452}1453 1454/* Common teardown code used for both device removal and reset */1455static void mwifiex_uninit_sw(struct mwifiex_adapter *adapter)1456{1457 struct mwifiex_private *priv;1458 int i;1459 1460 /* We can no longer handle interrupts once we start doing the teardown1461 * below.1462 */1463 if (adapter->if_ops.disable_int)1464 adapter->if_ops.disable_int(adapter);1465 1466 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);1467 mwifiex_terminate_workqueue(adapter);1468 adapter->int_status = 0;1469 1470 /* Stop data */1471 for (i = 0; i < adapter->priv_num; i++) {1472 priv = adapter->priv[i];1473 if (priv->netdev) {1474 mwifiex_stop_net_dev_queue(priv->netdev, adapter);1475 if (netif_carrier_ok(priv->netdev))1476 netif_carrier_off(priv->netdev);1477 netif_device_detach(priv->netdev);1478 }1479 }1480 1481 mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n");1482 mwifiex_shutdown_drv(adapter);1483 mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n");1484 1485 if (atomic_read(&adapter->rx_pending) ||1486 atomic_read(&adapter->tx_pending) ||1487 atomic_read(&adapter->cmd_pending)) {1488 mwifiex_dbg(adapter, ERROR,1489 "rx_pending=%d, tx_pending=%d,\t"1490 "cmd_pending=%d\n",1491 atomic_read(&adapter->rx_pending),1492 atomic_read(&adapter->tx_pending),1493 atomic_read(&adapter->cmd_pending));1494 }1495 1496 for (i = 0; i < adapter->priv_num; i++) {1497 priv = adapter->priv[i];1498 rtnl_lock();1499 if (priv->netdev &&1500 priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED) {1501 /*1502 * Close the netdev now, because if we do it later, the1503 * netdev notifiers will need to acquire the wiphy lock1504 * again --> deadlock.1505 */1506 dev_close(priv->wdev.netdev);1507 wiphy_lock(adapter->wiphy);1508 mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);1509 wiphy_unlock(adapter->wiphy);1510 }1511 rtnl_unlock();1512 }1513 1514 wiphy_unregister(adapter->wiphy);1515 wiphy_free(adapter->wiphy);1516 adapter->wiphy = NULL;1517 1518 vfree(adapter->chan_stats);1519 mwifiex_free_cmd_buffers(adapter);1520}1521 1522/*1523 * This function can be used for shutting down the adapter SW.1524 */1525int mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)1526{1527 struct mwifiex_private *priv;1528 1529 if (!adapter)1530 return 0;1531 1532 wait_for_completion(adapter->fw_done);1533 /* Caller should ensure we aren't suspending while this happens */1534 reinit_completion(adapter->fw_done);1535 1536 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);1537 mwifiex_deauthenticate(priv, NULL);1538 1539 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);1540 1541 mwifiex_uninit_sw(adapter);1542 adapter->is_up = false;1543 1544 if (adapter->if_ops.down_dev)1545 adapter->if_ops.down_dev(adapter);1546 1547 return 0;1548}1549EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw);1550 1551/* This function can be used for reinitting the adapter SW. Required1552 * code is extracted from mwifiex_add_card()1553 */1554int1555mwifiex_reinit_sw(struct mwifiex_adapter *adapter)1556{1557 int ret;1558 1559 mwifiex_init_lock_list(adapter);1560 if (adapter->if_ops.up_dev)1561 adapter->if_ops.up_dev(adapter);1562 1563 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;1564 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);1565 init_waitqueue_head(&adapter->init_wait_q);1566 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);1567 adapter->hs_activated = false;1568 clear_bit(MWIFIEX_IS_CMD_TIMEDOUT, &adapter->work_flags);1569 init_waitqueue_head(&adapter->hs_activate_wait_q);1570 init_waitqueue_head(&adapter->cmd_wait_q.wait);1571 adapter->cmd_wait_q.status = 0;1572 adapter->scan_wait_q_woken = false;1573 1574 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)1575 adapter->rx_work_enabled = true;1576 1577 adapter->workqueue =1578 alloc_workqueue("MWIFIEX_WORK_QUEUE",1579 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0);1580 if (!adapter->workqueue)1581 goto err_kmalloc;1582 1583 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);1584 1585 if (adapter->rx_work_enabled) {1586 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",1587 WQ_HIGHPRI |1588 WQ_MEM_RECLAIM |1589 WQ_UNBOUND, 0);1590 if (!adapter->rx_workqueue)1591 goto err_kmalloc;1592 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);1593 }1594 1595 if (adapter->host_mlme_enabled) {1596 adapter->host_mlme_workqueue =1597 alloc_workqueue("MWIFIEX_HOST_MLME_WORK_QUEUE",1598 WQ_HIGHPRI |1599 WQ_MEM_RECLAIM |1600 WQ_UNBOUND, 0);1601 if (!adapter->host_mlme_workqueue)1602 goto err_kmalloc;1603 INIT_WORK(&adapter->host_mlme_work,1604 mwifiex_host_mlme_work_queue);1605 }1606 1607 /* Register the device. Fill up the private data structure with1608 * relevant information from the card. Some code extracted from1609 * mwifiex_register_dev()1610 */1611 mwifiex_dbg(adapter, INFO, "%s, mwifiex_init_hw_fw()...\n", __func__);1612 1613 if (mwifiex_init_hw_fw(adapter, false)) {1614 mwifiex_dbg(adapter, ERROR,1615 "%s: firmware init failed\n", __func__);1616 goto err_init_fw;1617 }1618 1619 /* _mwifiex_fw_dpc() does its own cleanup */1620 ret = _mwifiex_fw_dpc(adapter->firmware, adapter);1621 if (ret) {1622 pr_err("Failed to bring up adapter: %d\n", ret);1623 return ret;1624 }1625 mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);1626 1627 return 0;1628 1629err_init_fw:1630 mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__);1631 if (adapter->if_ops.unregister_dev)1632 adapter->if_ops.unregister_dev(adapter);1633 1634err_kmalloc:1635 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);1636 mwifiex_terminate_workqueue(adapter);1637 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {1638 mwifiex_dbg(adapter, ERROR,1639 "info: %s: shutdown mwifiex\n", __func__);1640 mwifiex_shutdown_drv(adapter);1641 mwifiex_free_cmd_buffers(adapter);1642 }1643 1644 complete_all(adapter->fw_done);1645 mwifiex_dbg(adapter, INFO, "%s, error\n", __func__);1646 1647 return -1;1648}1649EXPORT_SYMBOL_GPL(mwifiex_reinit_sw);1650 1651static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv)1652{1653 struct mwifiex_adapter *adapter = priv;1654 1655 dev_dbg(adapter->dev, "%s: wake by wifi", __func__);1656 adapter->wake_by_wifi = true;1657 disable_irq_nosync(irq);1658 1659 /* Notify PM core we are wakeup source */1660 pm_wakeup_event(adapter->dev, 0);1661 pm_system_wakeup();1662 1663 return IRQ_HANDLED;1664}1665 1666static void mwifiex_probe_of(struct mwifiex_adapter *adapter)1667{1668 int ret;1669 struct device *dev = adapter->dev;1670 1671 if (!dev->of_node)1672 goto err_exit;1673 1674 adapter->dt_node = dev->of_node;1675 adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0);1676 if (!adapter->irq_wakeup) {1677 dev_dbg(dev, "fail to parse irq_wakeup from device tree\n");1678 goto err_exit;1679 }1680 1681 ret = devm_request_irq(dev, adapter->irq_wakeup,1682 mwifiex_irq_wakeup_handler, IRQF_TRIGGER_LOW,1683 "wifi_wake", adapter);1684 if (ret) {1685 dev_err(dev, "Failed to request irq_wakeup %d (%d)\n",1686 adapter->irq_wakeup, ret);1687 goto err_exit;1688 }1689 1690 disable_irq(adapter->irq_wakeup);1691 if (device_init_wakeup(dev, true)) {1692 dev_err(dev, "fail to init wakeup for mwifiex\n");1693 goto err_exit;1694 }1695 return;1696 1697err_exit:1698 adapter->irq_wakeup = -1;1699}1700 1701/*1702 * This function adds the card.1703 *1704 * This function follows the following major steps to set up the device -1705 * - Initialize software. This includes probing the card, registering1706 * the interface operations table, and allocating/initializing the1707 * adapter structure1708 * - Set up the netlink socket1709 * - Create and start the main work queue1710 * - Register the device1711 * - Initialize firmware and hardware1712 * - Add logical interfaces1713 */1714int1715mwifiex_add_card(void *card, struct completion *fw_done,1716 struct mwifiex_if_ops *if_ops, u8 iface_type,1717 struct device *dev)1718{1719 struct mwifiex_adapter *adapter;1720 1721 if (mwifiex_register(card, dev, if_ops, (void **)&adapter)) {1722 pr_err("%s: software init failed\n", __func__);1723 goto err_init_sw;1724 }1725 1726 mwifiex_probe_of(adapter);1727 1728 adapter->iface_type = iface_type;1729 adapter->fw_done = fw_done;1730 1731 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;1732 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);1733 init_waitqueue_head(&adapter->init_wait_q);1734 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);1735 adapter->hs_activated = false;1736 init_waitqueue_head(&adapter->hs_activate_wait_q);1737 init_waitqueue_head(&adapter->cmd_wait_q.wait);1738 adapter->cmd_wait_q.status = 0;1739 adapter->scan_wait_q_woken = false;1740 1741 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)1742 adapter->rx_work_enabled = true;1743 1744 adapter->workqueue =1745 alloc_workqueue("MWIFIEX_WORK_QUEUE",1746 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0);1747 if (!adapter->workqueue)1748 goto err_kmalloc;1749 1750 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);1751 1752 if (adapter->rx_work_enabled) {1753 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",1754 WQ_HIGHPRI |1755 WQ_MEM_RECLAIM |1756 WQ_UNBOUND, 0);1757 if (!adapter->rx_workqueue)1758 goto err_kmalloc;1759 1760 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);1761 }1762 1763 /* Register the device. Fill up the private data structure with relevant1764 information from the card. */1765 if (adapter->if_ops.register_dev(adapter)) {1766 pr_err("%s: failed to register mwifiex device\n", __func__);1767 goto err_registerdev;1768 }1769 1770 if (adapter->host_mlme_enabled) {1771 adapter->host_mlme_workqueue =1772 alloc_workqueue("MWIFIEX_HOST_MLME_WORK_QUEUE",1773 WQ_HIGHPRI |1774 WQ_MEM_RECLAIM |1775 WQ_UNBOUND, 0);1776 if (!adapter->host_mlme_workqueue)1777 goto err_kmalloc;1778 INIT_WORK(&adapter->host_mlme_work,1779 mwifiex_host_mlme_work_queue);1780 }1781 1782 if (mwifiex_init_hw_fw(adapter, true)) {1783 pr_err("%s: firmware init failed\n", __func__);1784 goto err_init_fw;1785 }1786 1787 return 0;1788 1789err_init_fw:1790 pr_debug("info: %s: unregister device\n", __func__);1791 if (adapter->if_ops.unregister_dev)1792 adapter->if_ops.unregister_dev(adapter);1793err_registerdev:1794 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);1795 mwifiex_terminate_workqueue(adapter);1796 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {1797 pr_debug("info: %s: shutdown mwifiex\n", __func__);1798 mwifiex_shutdown_drv(adapter);1799 mwifiex_free_cmd_buffers(adapter);1800 }1801err_kmalloc:1802 if (adapter->irq_wakeup >= 0)1803 device_init_wakeup(adapter->dev, false);1804 mwifiex_free_adapter(adapter);1805 1806err_init_sw:1807 1808 return -1;1809}1810EXPORT_SYMBOL_GPL(mwifiex_add_card);1811 1812/*1813 * This function removes the card.1814 *1815 * This function follows the following major steps to remove the device -1816 * - Stop data traffic1817 * - Shutdown firmware1818 * - Remove the logical interfaces1819 * - Terminate the work queue1820 * - Unregister the device1821 * - Free the adapter structure1822 */1823int mwifiex_remove_card(struct mwifiex_adapter *adapter)1824{1825 if (!adapter)1826 return 0;1827 1828 if (adapter->is_up)1829 mwifiex_uninit_sw(adapter);1830 1831 if (adapter->irq_wakeup >= 0)1832 device_init_wakeup(adapter->dev, false);1833 1834 /* Unregister device */1835 mwifiex_dbg(adapter, INFO,1836 "info: unregister device\n");1837 if (adapter->if_ops.unregister_dev)1838 adapter->if_ops.unregister_dev(adapter);1839 /* Free adapter structure */1840 mwifiex_dbg(adapter, INFO,1841 "info: free adapter\n");1842 mwifiex_free_adapter(adapter);1843 1844 return 0;1845}1846EXPORT_SYMBOL_GPL(mwifiex_remove_card);1847 1848void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,1849 const char *fmt, ...)1850{1851 struct va_format vaf;1852 va_list args;1853 1854 if (!(adapter->debug_mask & mask))1855 return;1856 1857 va_start(args, fmt);1858 1859 vaf.fmt = fmt;1860 vaf.va = &args;1861 1862 if (adapter->dev)1863 dev_info(adapter->dev, "%pV", &vaf);1864 else1865 pr_info("%pV", &vaf);1866 1867 va_end(args);1868}1869EXPORT_SYMBOL_GPL(_mwifiex_dbg);1870 1871/*1872 * This function initializes the module.1873 *1874 * The debug FS is also initialized if configured.1875 */1876static int1877mwifiex_init_module(void)1878{1879#ifdef CONFIG_DEBUG_FS1880 mwifiex_debugfs_init();1881#endif1882 return 0;1883}1884 1885/*1886 * This function cleans up the module.1887 *1888 * The debug FS is removed if available.1889 */1890static void1891mwifiex_cleanup_module(void)1892{1893#ifdef CONFIG_DEBUG_FS1894 mwifiex_debugfs_remove();1895#endif1896}1897 1898module_init(mwifiex_init_module);1899module_exit(mwifiex_cleanup_module);1900 1901MODULE_AUTHOR("Marvell International Ltd.");1902MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION);1903MODULE_VERSION(VERSION);1904MODULE_LICENSE("GPL v2");1905