2 * Marvell Wireless LAN device driver: major functions
4 * Copyright (C) 2011-2014, Marvell International Ltd.
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
20 #include <linux/suspend.h>
28 #define MFG_FIRMWARE "mwifiex_mfg.bin"
30 static unsigned int debug_mask = MWIFIEX_DEFAULT_DEBUG_MASK;
31 module_param(debug_mask, uint, 0);
32 MODULE_PARM_DESC(debug_mask, "bitmap for debug flags");
34 const char driver_version[] = "mwifiex " VERSION " (%s) ";
35 static char *cal_data_cfg;
36 module_param(cal_data_cfg, charp, 0);
38 static unsigned short driver_mode;
39 module_param(driver_mode, ushort, 0);
40 MODULE_PARM_DESC(driver_mode,
41 "station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7");
44 module_param(mfg_mode, bool, 0);
45 MODULE_PARM_DESC(mfg_mode, "manufacturing mode enable:1, disable:0");
48 * This function registers the device and performs all the necessary
51 * The following initialization operations are performed -
52 * - Allocate adapter structure
53 * - Save interface specific operations table in adapter
54 * - Call interface specific initialization routine
55 * - Allocate private structures
56 * - Set default adapter structure parameters
59 * In case of any errors during inittialization, this function also ensures
60 * proper cleanup before exiting.
62 static int mwifiex_register(void *card, struct device *dev,
63 struct mwifiex_if_ops *if_ops, void **padapter)
65 struct mwifiex_adapter *adapter;
68 adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL);
76 /* Save interface specific operations in adapter */
77 memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));
78 adapter->debug_mask = debug_mask;
80 /* card specific initialization has been deferred until now .. */
81 if (adapter->if_ops.init_if)
82 if (adapter->if_ops.init_if(adapter))
85 adapter->priv_num = 0;
87 for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) {
88 /* Allocate memory for private structure */
90 kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL);
91 if (!adapter->priv[i])
94 adapter->priv[i]->adapter = adapter;
97 mwifiex_init_lock_list(adapter);
99 setup_timer(&adapter->cmd_timer, mwifiex_cmd_timeout_func,
100 (unsigned long)adapter);
105 mwifiex_dbg(adapter, ERROR,
106 "info: leave mwifiex_register with error\n");
108 for (i = 0; i < adapter->priv_num; i++)
109 kfree(adapter->priv[i]);
117 * This function unregisters the device and performs all the necessary
120 * The following cleanup operations are performed -
122 * - Free beacon buffers
123 * - Free private structures
124 * - Free adapter structure
126 static int mwifiex_unregister(struct mwifiex_adapter *adapter)
130 if (adapter->if_ops.cleanup_if)
131 adapter->if_ops.cleanup_if(adapter);
133 del_timer_sync(&adapter->cmd_timer);
135 /* Free private structures */
136 for (i = 0; i < adapter->priv_num; i++) {
137 if (adapter->priv[i]) {
138 mwifiex_free_curr_bcn(adapter->priv[i]);
139 kfree(adapter->priv[i]);
143 if (adapter->nd_info) {
144 for (i = 0 ; i < adapter->nd_info->n_matches ; i++)
145 kfree(adapter->nd_info->matches[i]);
146 kfree(adapter->nd_info);
147 adapter->nd_info = NULL;
150 kfree(adapter->regd);
156 void mwifiex_queue_main_work(struct mwifiex_adapter *adapter)
160 spin_lock_irqsave(&adapter->main_proc_lock, flags);
161 if (adapter->mwifiex_processing) {
162 adapter->more_task_flag = true;
163 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
165 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
166 queue_work(adapter->workqueue, &adapter->main_work);
169 EXPORT_SYMBOL_GPL(mwifiex_queue_main_work);
171 static void mwifiex_queue_rx_work(struct mwifiex_adapter *adapter)
175 spin_lock_irqsave(&adapter->rx_proc_lock, flags);
176 if (adapter->rx_processing) {
177 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
179 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
180 queue_work(adapter->rx_workqueue, &adapter->rx_work);
184 static int mwifiex_process_rx(struct mwifiex_adapter *adapter)
188 struct mwifiex_rxinfo *rx_info;
190 spin_lock_irqsave(&adapter->rx_proc_lock, flags);
191 if (adapter->rx_processing || adapter->rx_locked) {
192 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
195 adapter->rx_processing = true;
196 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
199 /* Check for Rx data */
200 while ((skb = skb_dequeue(&adapter->rx_data_q))) {
201 atomic_dec(&adapter->rx_pending);
202 if ((adapter->delay_main_work ||
203 adapter->iface_type == MWIFIEX_USB) &&
204 (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {
205 if (adapter->if_ops.submit_rem_rx_urbs)
206 adapter->if_ops.submit_rem_rx_urbs(adapter);
207 adapter->delay_main_work = false;
208 mwifiex_queue_main_work(adapter);
210 rx_info = MWIFIEX_SKB_RXCB(skb);
211 if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) {
212 if (adapter->if_ops.deaggr_pkt)
213 adapter->if_ops.deaggr_pkt(adapter, skb);
214 dev_kfree_skb_any(skb);
216 mwifiex_handle_rx_packet(adapter, skb);
219 spin_lock_irqsave(&adapter->rx_proc_lock, flags);
220 adapter->rx_processing = false;
221 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
230 * This function is the main procedure of the driver and handles various driver
231 * operations. It runs in a loop and provides the core functionalities.
233 * The main responsibilities of this function are -
234 * - Ensure concurrency control
235 * - Handle pending interrupts and call interrupt handlers
236 * - Wake up the card if required
237 * - Handle command responses and call response handlers
238 * - Handle events and call event handlers
239 * - Execute pending commands
240 * - Transmit pending data packets
242 int mwifiex_main_process(struct mwifiex_adapter *adapter)
247 spin_lock_irqsave(&adapter->main_proc_lock, flags);
249 /* Check if already processing */
250 if (adapter->mwifiex_processing || adapter->main_locked) {
251 adapter->more_task_flag = true;
252 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
255 adapter->mwifiex_processing = true;
256 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
260 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
263 /* For non-USB interfaces, If we process interrupts first, it
264 * would increase RX pending even further. Avoid this by
265 * checking if rx_pending has crossed high threshold and
266 * schedule rx work queue and then process interrupts.
267 * For USB interface, there are no interrupts. We already have
268 * HIGH_RX_PENDING check in usb.c
270 if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING &&
271 adapter->iface_type != MWIFIEX_USB) {
272 adapter->delay_main_work = true;
273 mwifiex_queue_rx_work(adapter);
277 /* Handle pending interrupt if any */
278 if (adapter->int_status) {
279 if (adapter->hs_activated)
280 mwifiex_process_hs_config(adapter);
281 if (adapter->if_ops.process_int_status)
282 adapter->if_ops.process_int_status(adapter);
285 if (adapter->rx_work_enabled && adapter->data_received)
286 mwifiex_queue_rx_work(adapter);
288 /* Need to wake up the card ? */
289 if ((adapter->ps_state == PS_STATE_SLEEP) &&
290 (adapter->pm_wakeup_card_req &&
291 !adapter->pm_wakeup_fw_try) &&
292 (is_command_pending(adapter) ||
293 !skb_queue_empty(&adapter->tx_data_q) ||
294 !mwifiex_bypass_txlist_empty(adapter) ||
295 !mwifiex_wmm_lists_empty(adapter))) {
296 adapter->pm_wakeup_fw_try = true;
297 mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3));
298 adapter->if_ops.wakeup(adapter);
302 if (IS_CARD_RX_RCVD(adapter)) {
303 adapter->data_received = false;
304 adapter->pm_wakeup_fw_try = false;
305 del_timer(&adapter->wakeup_timer);
306 if (adapter->ps_state == PS_STATE_SLEEP)
307 adapter->ps_state = PS_STATE_AWAKE;
309 /* We have tried to wakeup the card already */
310 if (adapter->pm_wakeup_fw_try)
312 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
313 mwifiex_check_ps_cond(adapter);
315 if (adapter->ps_state != PS_STATE_AWAKE)
317 if (adapter->tx_lock_flag) {
318 if (adapter->iface_type == MWIFIEX_USB) {
319 if (!adapter->usb_mc_setup)
325 if ((!adapter->scan_chan_gap_enabled &&
326 adapter->scan_processing) || adapter->data_sent ||
327 mwifiex_is_tdls_chan_switching
328 (mwifiex_get_priv(adapter,
329 MWIFIEX_BSS_ROLE_STA)) ||
330 (mwifiex_wmm_lists_empty(adapter) &&
331 mwifiex_bypass_txlist_empty(adapter) &&
332 skb_queue_empty(&adapter->tx_data_q))) {
333 if (adapter->cmd_sent || adapter->curr_cmd ||
334 !mwifiex_is_send_cmd_allowed
335 (mwifiex_get_priv(adapter,
336 MWIFIEX_BSS_ROLE_STA)) ||
337 (!is_command_pending(adapter)))
342 /* Check for event */
343 if (adapter->event_received) {
344 adapter->event_received = false;
345 mwifiex_process_event(adapter);
348 /* Check for Cmd Resp */
349 if (adapter->cmd_resp_received) {
350 adapter->cmd_resp_received = false;
351 mwifiex_process_cmdresp(adapter);
353 /* call mwifiex back when init_fw is done */
354 if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) {
355 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
356 mwifiex_init_fw_complete(adapter);
360 /* Check if we need to confirm Sleep Request
361 received previously */
362 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
363 mwifiex_check_ps_cond(adapter);
365 /* * The ps_state may have been changed during processing of
366 * Sleep Request event.
368 if ((adapter->ps_state == PS_STATE_SLEEP) ||
369 (adapter->ps_state == PS_STATE_PRE_SLEEP) ||
370 (adapter->ps_state == PS_STATE_SLEEP_CFM)) {
374 if (adapter->tx_lock_flag) {
375 if (adapter->iface_type == MWIFIEX_USB) {
376 if (!adapter->usb_mc_setup)
382 if (!adapter->cmd_sent && !adapter->curr_cmd &&
383 mwifiex_is_send_cmd_allowed
384 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
385 if (mwifiex_exec_next_cmd(adapter) == -1) {
391 /** If USB Multi channel setup ongoing,
392 * wait for ready to tx data.
394 if (adapter->iface_type == MWIFIEX_USB &&
395 adapter->usb_mc_setup)
398 if ((adapter->scan_chan_gap_enabled ||
399 !adapter->scan_processing) &&
400 !adapter->data_sent &&
401 !skb_queue_empty(&adapter->tx_data_q)) {
402 mwifiex_process_tx_queue(adapter);
403 if (adapter->hs_activated) {
404 adapter->is_hs_configured = false;
405 mwifiex_hs_activated_event
407 (adapter, MWIFIEX_BSS_ROLE_ANY),
412 if ((adapter->scan_chan_gap_enabled ||
413 !adapter->scan_processing) &&
414 !adapter->data_sent &&
415 !mwifiex_bypass_txlist_empty(adapter) &&
416 !mwifiex_is_tdls_chan_switching
417 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
418 mwifiex_process_bypass_tx(adapter);
419 if (adapter->hs_activated) {
420 adapter->is_hs_configured = false;
421 mwifiex_hs_activated_event
423 (adapter, MWIFIEX_BSS_ROLE_ANY),
428 if ((adapter->scan_chan_gap_enabled ||
429 !adapter->scan_processing) &&
430 !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) &&
431 !mwifiex_is_tdls_chan_switching
432 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
433 mwifiex_wmm_process_tx(adapter);
434 if (adapter->hs_activated) {
435 adapter->is_hs_configured = false;
436 mwifiex_hs_activated_event
438 (adapter, MWIFIEX_BSS_ROLE_ANY),
443 if (adapter->delay_null_pkt && !adapter->cmd_sent &&
444 !adapter->curr_cmd && !is_command_pending(adapter) &&
445 (mwifiex_wmm_lists_empty(adapter) &&
446 mwifiex_bypass_txlist_empty(adapter) &&
447 skb_queue_empty(&adapter->tx_data_q))) {
448 if (!mwifiex_send_null_packet
449 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
450 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
451 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) {
452 adapter->delay_null_pkt = false;
453 adapter->ps_state = PS_STATE_SLEEP;
459 spin_lock_irqsave(&adapter->main_proc_lock, flags);
460 if (adapter->more_task_flag) {
461 adapter->more_task_flag = false;
462 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
465 adapter->mwifiex_processing = false;
466 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
470 EXPORT_SYMBOL_GPL(mwifiex_main_process);
473 * This function frees the adapter structure.
475 * Additionally, this closes the netlink socket, frees the timers
476 * and private structures.
478 static void mwifiex_free_adapter(struct mwifiex_adapter *adapter)
481 pr_err("%s: adapter is NULL\n", __func__);
485 mwifiex_unregister(adapter);
486 pr_debug("info: %s: free adapter\n", __func__);
490 * This function cancels all works in the queue and destroys
491 * the main workqueue.
493 static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter)
495 if (adapter->workqueue) {
496 flush_workqueue(adapter->workqueue);
497 destroy_workqueue(adapter->workqueue);
498 adapter->workqueue = NULL;
501 if (adapter->rx_workqueue) {
502 flush_workqueue(adapter->rx_workqueue);
503 destroy_workqueue(adapter->rx_workqueue);
504 adapter->rx_workqueue = NULL;
509 * This function gets firmware and initializes it.
511 * The main initialization steps followed are -
512 * - Download the correct firmware to card
513 * - Issue the init commands to firmware
515 static int _mwifiex_fw_dpc(const struct firmware *firmware, void *context)
519 struct mwifiex_adapter *adapter = context;
520 struct mwifiex_fw_image fw;
521 bool init_failed = false;
522 struct wireless_dev *wdev;
523 struct completion *fw_done = adapter->fw_done;
526 mwifiex_dbg(adapter, ERROR,
527 "Failed to get firmware %s\n", adapter->fw_name);
531 memset(&fw, 0, sizeof(struct mwifiex_fw_image));
532 adapter->firmware = firmware;
533 fw.fw_buf = (u8 *) adapter->firmware->data;
534 fw.fw_len = adapter->firmware->size;
536 if (adapter->if_ops.dnld_fw) {
537 ret = adapter->if_ops.dnld_fw(adapter, &fw);
539 ret = mwifiex_dnld_fw(adapter, &fw);
545 mwifiex_dbg(adapter, MSG, "WLAN FW is active\n");
548 if ((request_firmware(&adapter->cal_data, cal_data_cfg,
550 mwifiex_dbg(adapter, ERROR,
551 "Cal data request_firmware() failed\n");
554 /* enable host interrupt after fw dnld is successful */
555 if (adapter->if_ops.enable_int) {
556 if (adapter->if_ops.enable_int(adapter))
560 adapter->init_wait_q_woken = false;
561 ret = mwifiex_init_fw(adapter);
565 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
568 /* Wait for mwifiex_init to complete */
569 if (!adapter->mfg_mode) {
570 wait_event_interruptible(adapter->init_wait_q,
571 adapter->init_wait_q_woken);
572 if (adapter->hw_status != MWIFIEX_HW_STATUS_READY)
576 if (!adapter->wiphy) {
577 if (mwifiex_register_cfg80211(adapter)) {
578 mwifiex_dbg(adapter, ERROR,
579 "cannot register with cfg80211\n");
584 if (mwifiex_init_channel_scan_gap(adapter)) {
585 mwifiex_dbg(adapter, ERROR,
586 "could not init channel stats table\n");
591 driver_mode &= MWIFIEX_DRIVER_MODE_BITMASK;
592 driver_mode |= MWIFIEX_DRIVER_MODE_STA;
596 /* Create station interface by default */
597 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM,
598 NL80211_IFTYPE_STATION, NULL);
600 mwifiex_dbg(adapter, ERROR,
601 "cannot create default STA interface\n");
606 if (driver_mode & MWIFIEX_DRIVER_MODE_UAP) {
607 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM,
608 NL80211_IFTYPE_AP, NULL);
610 mwifiex_dbg(adapter, ERROR,
611 "cannot create AP interface\n");
617 if (driver_mode & MWIFIEX_DRIVER_MODE_P2P) {
618 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", NET_NAME_ENUM,
619 NL80211_IFTYPE_P2P_CLIENT, NULL);
621 mwifiex_dbg(adapter, ERROR,
622 "cannot create p2p client interface\n");
629 mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);
630 mwifiex_dbg(adapter, MSG, "driver_version = %s\n", fmt);
634 vfree(adapter->chan_stats);
635 wiphy_unregister(adapter->wiphy);
636 wiphy_free(adapter->wiphy);
638 if (adapter->if_ops.disable_int)
639 adapter->if_ops.disable_int(adapter);
641 mwifiex_dbg(adapter, ERROR,
642 "info: %s: unregister device\n", __func__);
643 if (adapter->if_ops.unregister_dev)
644 adapter->if_ops.unregister_dev(adapter);
646 adapter->surprise_removed = true;
647 mwifiex_terminate_workqueue(adapter);
649 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
650 pr_debug("info: %s: shutdown mwifiex\n", __func__);
651 mwifiex_shutdown_drv(adapter);
656 if (adapter->cal_data) {
657 release_firmware(adapter->cal_data);
658 adapter->cal_data = NULL;
660 if (adapter->firmware) {
661 release_firmware(adapter->firmware);
662 adapter->firmware = NULL;
665 mwifiex_free_adapter(adapter);
666 /* Tell all current and future waiters we're finished */
667 complete_all(fw_done);
669 return init_failed ? -EIO : 0;
672 static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
674 _mwifiex_fw_dpc(firmware, context);
678 * This function gets the firmware and (if called asynchronously) kicks off the
681 static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter,
686 /* Override default firmware with manufacturing one if
687 * manufacturing mode is enabled
690 if (strlcpy(adapter->fw_name, MFG_FIRMWARE,
691 sizeof(adapter->fw_name)) >=
692 sizeof(adapter->fw_name)) {
693 pr_err("%s: fw_name too long!\n", __func__);
699 ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name,
700 adapter->dev, GFP_KERNEL, adapter,
703 ret = request_firmware(&adapter->firmware,
709 mwifiex_dbg(adapter, ERROR, "request_firmware%s error %d\n",
710 req_fw_nowait ? "_nowait" : "", ret);
715 * CFG802.11 network device handler for open.
717 * Starts the data queue.
720 mwifiex_open(struct net_device *dev)
722 netif_carrier_off(dev);
728 * CFG802.11 network device handler for close.
731 mwifiex_close(struct net_device *dev)
733 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
735 if (priv->scan_request) {
736 struct cfg80211_scan_info info = {
740 mwifiex_dbg(priv->adapter, INFO,
741 "aborting scan on ndo_stop\n");
742 cfg80211_scan_done(priv->scan_request, &info);
743 priv->scan_request = NULL;
744 priv->scan_aborting = true;
747 if (priv->sched_scanning) {
748 mwifiex_dbg(priv->adapter, INFO,
749 "aborting bgscan on ndo_stop\n");
750 mwifiex_stop_bg_scan(priv);
751 cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
758 mwifiex_bypass_tx_queue(struct mwifiex_private *priv,
761 struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
763 if (ntohs(eth_hdr->h_proto) == ETH_P_PAE ||
764 mwifiex_is_skb_mgmt_frame(skb) ||
765 (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
766 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
767 (ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) {
768 mwifiex_dbg(priv->adapter, DATA,
769 "bypass txqueue; eth type %#x, mgmt %d\n",
770 ntohs(eth_hdr->h_proto),
771 mwifiex_is_skb_mgmt_frame(skb));
778 * Add buffer into wmm tx queue and queue work to transmit it.
780 int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)
782 struct netdev_queue *txq;
783 int index = mwifiex_1d_to_wmm_queue[skb->priority];
785 if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) {
786 txq = netdev_get_tx_queue(priv->netdev, index);
787 if (!netif_tx_queue_stopped(txq)) {
788 netif_tx_stop_queue(txq);
789 mwifiex_dbg(priv->adapter, DATA,
790 "stop queue: %d\n", index);
794 if (mwifiex_bypass_tx_queue(priv, skb)) {
795 atomic_inc(&priv->adapter->tx_pending);
796 atomic_inc(&priv->adapter->bypass_tx_pending);
797 mwifiex_wmm_add_buf_bypass_txqueue(priv, skb);
799 atomic_inc(&priv->adapter->tx_pending);
800 mwifiex_wmm_add_buf_txqueue(priv, skb);
803 mwifiex_queue_main_work(priv->adapter);
809 mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv,
810 struct sk_buff *skb, u8 flag, u64 *cookie)
812 struct sk_buff *orig_skb = skb;
813 struct mwifiex_txinfo *tx_info, *orig_tx_info;
815 skb = skb_clone(skb, GFP_ATOMIC);
820 spin_lock_irqsave(&priv->ack_status_lock, flags);
821 id = idr_alloc(&priv->ack_status_frames, orig_skb,
822 1, 0x10, GFP_ATOMIC);
823 spin_unlock_irqrestore(&priv->ack_status_lock, flags);
826 tx_info = MWIFIEX_SKB_TXCB(skb);
827 tx_info->ack_frame_id = id;
828 tx_info->flags |= flag;
829 orig_tx_info = MWIFIEX_SKB_TXCB(orig_skb);
830 orig_tx_info->ack_frame_id = id;
831 orig_tx_info->flags |= flag;
833 if (flag == MWIFIEX_BUF_FLAG_ACTION_TX_STATUS && cookie)
834 orig_tx_info->cookie = *cookie;
836 } else if (skb_shared(skb)) {
843 /* couldn't clone -- lose tx status ... */
851 * CFG802.11 network device handler for data transmission.
854 mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
856 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
857 struct sk_buff *new_skb;
858 struct mwifiex_txinfo *tx_info;
861 mwifiex_dbg(priv->adapter, DATA,
862 "data: %lu BSS(%d-%d): Data <= kernel\n",
863 jiffies, priv->bss_type, priv->bss_num);
865 if (priv->adapter->surprise_removed) {
867 priv->stats.tx_dropped++;
870 if (!skb->len || (skb->len > ETH_FRAME_LEN)) {
871 mwifiex_dbg(priv->adapter, ERROR,
872 "Tx: bad skb len %d\n", skb->len);
874 priv->stats.tx_dropped++;
877 if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) {
878 mwifiex_dbg(priv->adapter, DATA,
879 "data: Tx: insufficient skb headroom %d\n",
881 /* Insufficient skb headroom - allocate a new skb */
883 skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
884 if (unlikely(!new_skb)) {
885 mwifiex_dbg(priv->adapter, ERROR,
886 "Tx: cannot alloca new_skb\n");
888 priv->stats.tx_dropped++;
893 mwifiex_dbg(priv->adapter, INFO,
894 "info: new skb headroomd %d\n",
898 tx_info = MWIFIEX_SKB_TXCB(skb);
899 memset(tx_info, 0, sizeof(*tx_info));
900 tx_info->bss_num = priv->bss_num;
901 tx_info->bss_type = priv->bss_type;
902 tx_info->pkt_len = skb->len;
904 multicast = is_multicast_ether_addr(skb->data);
906 if (unlikely(!multicast && skb->sk &&
907 skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS &&
908 priv->adapter->fw_api_ver == MWIFIEX_FW_V15))
909 skb = mwifiex_clone_skb_for_tx_status(priv,
911 MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS, NULL);
913 /* Record the current time the packet was queued; used to
914 * determine the amount of time the packet was queued in
915 * the driver before it was sent to the firmware.
916 * The delay is then sent along with the packet to the
917 * firmware for aggregate delay calculation for stats and
918 * MSDU lifetime expiry.
920 __net_timestamp(skb);
922 if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
923 priv->bss_type == MWIFIEX_BSS_TYPE_STA &&
924 !ether_addr_equal_unaligned(priv->cfg_bssid, skb->data)) {
925 if (priv->adapter->auto_tdls && priv->check_tdls_tx)
926 mwifiex_tdls_check_tx(priv, skb);
929 mwifiex_queue_tx_pkt(priv, skb);
935 * CFG802.11 network device handler for setting MAC address.
938 mwifiex_set_mac_address(struct net_device *dev, void *addr)
940 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
941 struct sockaddr *hw_addr = addr;
944 memcpy(priv->curr_addr, hw_addr->sa_data, ETH_ALEN);
946 /* Send request to firmware */
947 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
948 HostCmd_ACT_GEN_SET, 0, NULL, true);
951 memcpy(priv->netdev->dev_addr, priv->curr_addr, ETH_ALEN);
953 mwifiex_dbg(priv->adapter, ERROR,
954 "set mac address failed: ret=%d\n", ret);
956 memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN);
962 * CFG802.11 network device handler for setting multicast list.
964 static void mwifiex_set_multicast_list(struct net_device *dev)
966 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
967 struct mwifiex_multicast_list mcast_list;
969 if (dev->flags & IFF_PROMISC) {
970 mcast_list.mode = MWIFIEX_PROMISC_MODE;
971 } else if (dev->flags & IFF_ALLMULTI ||
972 netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) {
973 mcast_list.mode = MWIFIEX_ALL_MULTI_MODE;
975 mcast_list.mode = MWIFIEX_MULTICAST_MODE;
976 mcast_list.num_multicast_addr =
977 mwifiex_copy_mcast_addr(&mcast_list, dev);
979 mwifiex_request_set_multicast_list(priv, &mcast_list);
983 * CFG802.11 network device handler for transmission timeout.
986 mwifiex_tx_timeout(struct net_device *dev)
988 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
990 priv->num_tx_timeout++;
991 priv->tx_timeout_cnt++;
992 mwifiex_dbg(priv->adapter, ERROR,
993 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
994 jiffies, priv->tx_timeout_cnt, priv->bss_type,
996 mwifiex_set_trans_start(dev);
998 if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&
999 priv->adapter->if_ops.card_reset) {
1000 mwifiex_dbg(priv->adapter, ERROR,
1001 "tx_timeout_cnt exceeds threshold.\t"
1002 "Triggering card reset!\n");
1003 priv->adapter->if_ops.card_reset(priv->adapter);
1007 void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter)
1009 struct usb_card_rec *card = adapter->card;
1010 struct mwifiex_private *priv;
1014 card->mc_resync_flag = true;
1015 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
1016 if (atomic_read(&card->port[i].tx_data_urb_pending)) {
1017 mwifiex_dbg(adapter, WARN, "pending data urb in sys\n");
1022 card->mc_resync_flag = false;
1023 tx_buf_size = 0xffff;
1024 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1025 ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF,
1026 HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false);
1028 mwifiex_dbg(adapter, ERROR,
1029 "send reconfig tx buf size cmd err\n");
1031 EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync);
1033 int mwifiex_drv_info_dump(struct mwifiex_adapter *adapter, void **drv_info)
1036 char drv_version[64];
1037 struct usb_card_rec *cardp;
1038 struct sdio_mmc_card *sdio_card;
1039 struct mwifiex_private *priv;
1041 struct netdev_queue *txq;
1042 struct mwifiex_debug_info *debug_info;
1043 void *drv_info_dump;
1045 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n");
1047 /* memory allocate here should be free in mwifiex_upload_device_dump*/
1048 drv_info_dump = vzalloc(MWIFIEX_DRV_INFO_SIZE_MAX);
1053 p = (char *)(drv_info_dump);
1054 p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
1056 mwifiex_drv_get_driver_version(adapter, drv_version,
1057 sizeof(drv_version) - 1);
1058 p += sprintf(p, "driver_version = %s\n", drv_version);
1060 if (adapter->iface_type == MWIFIEX_USB) {
1061 cardp = (struct usb_card_rec *)adapter->card;
1062 p += sprintf(p, "tx_cmd_urb_pending = %d\n",
1063 atomic_read(&cardp->tx_cmd_urb_pending));
1064 p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n",
1065 atomic_read(&cardp->port[0].tx_data_urb_pending));
1066 p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n",
1067 atomic_read(&cardp->port[1].tx_data_urb_pending));
1068 p += sprintf(p, "rx_cmd_urb_pending = %d\n",
1069 atomic_read(&cardp->rx_cmd_urb_pending));
1070 p += sprintf(p, "rx_data_urb_pending = %d\n",
1071 atomic_read(&cardp->rx_data_urb_pending));
1074 p += sprintf(p, "tx_pending = %d\n",
1075 atomic_read(&adapter->tx_pending));
1076 p += sprintf(p, "rx_pending = %d\n",
1077 atomic_read(&adapter->rx_pending));
1079 if (adapter->iface_type == MWIFIEX_SDIO) {
1080 sdio_card = (struct sdio_mmc_card *)adapter->card;
1081 p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
1082 sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port);
1083 p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
1084 sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port);
1087 for (i = 0; i < adapter->priv_num; i++) {
1088 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1090 priv = adapter->priv[i];
1091 p += sprintf(p, "\n[interface : \"%s\"]\n",
1092 priv->netdev->name);
1093 p += sprintf(p, "wmm_tx_pending[0] = %d\n",
1094 atomic_read(&priv->wmm_tx_pending[0]));
1095 p += sprintf(p, "wmm_tx_pending[1] = %d\n",
1096 atomic_read(&priv->wmm_tx_pending[1]));
1097 p += sprintf(p, "wmm_tx_pending[2] = %d\n",
1098 atomic_read(&priv->wmm_tx_pending[2]));
1099 p += sprintf(p, "wmm_tx_pending[3] = %d\n",
1100 atomic_read(&priv->wmm_tx_pending[3]));
1101 p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ?
1102 "Disconnected" : "Connected");
1103 p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev)
1105 for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) {
1106 txq = netdev_get_tx_queue(priv->netdev, idx);
1107 p += sprintf(p, "tx queue %d:%s ", idx,
1108 netif_tx_queue_stopped(txq) ?
1109 "stopped" : "started");
1111 p += sprintf(p, "\n%s: num_tx_timeout = %d\n",
1112 priv->netdev->name, priv->num_tx_timeout);
1115 if (adapter->iface_type == MWIFIEX_SDIO ||
1116 adapter->iface_type == MWIFIEX_PCIE) {
1117 p += sprintf(p, "\n=== %s register dump===\n",
1118 adapter->iface_type == MWIFIEX_SDIO ?
1120 if (adapter->if_ops.reg_dump)
1121 p += adapter->if_ops.reg_dump(adapter, p);
1123 p += sprintf(p, "\n=== more debug information\n");
1124 debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);
1126 for (i = 0; i < adapter->priv_num; i++) {
1127 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1129 priv = adapter->priv[i];
1130 mwifiex_get_debug_info(priv, debug_info);
1131 p += mwifiex_debug_info_to_buffer(priv, p, debug_info);
1137 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n");
1138 *drv_info = drv_info_dump;
1139 return p - drv_info_dump;
1141 EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump);
1143 void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter, void *drv_info,
1146 u8 idx, *dump_data, *fw_dump_ptr;
1149 dump_len = (strlen("========Start dump driverinfo========\n") +
1151 strlen("\n========End dump========\n"));
1153 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1154 struct memory_type_mapping *entry =
1155 &adapter->mem_type_mapping_tbl[idx];
1157 if (entry->mem_ptr) {
1158 dump_len += (strlen("========Start dump ") +
1159 strlen(entry->mem_name) +
1160 strlen("========\n") +
1161 (entry->mem_size + 1) +
1162 strlen("\n========End dump========\n"));
1166 dump_data = vzalloc(dump_len + 1);
1170 fw_dump_ptr = dump_data;
1172 /* Dump all the memory data into single file, a userspace script will
1173 * be used to split all the memory data to multiple files
1175 mwifiex_dbg(adapter, MSG,
1176 "== mwifiex dump information to /sys/class/devcoredump start");
1178 strcpy(fw_dump_ptr, "========Start dump driverinfo========\n");
1179 fw_dump_ptr += strlen("========Start dump driverinfo========\n");
1180 memcpy(fw_dump_ptr, drv_info, drv_info_size);
1181 fw_dump_ptr += drv_info_size;
1182 strcpy(fw_dump_ptr, "\n========End dump========\n");
1183 fw_dump_ptr += strlen("\n========End dump========\n");
1185 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1186 struct memory_type_mapping *entry =
1187 &adapter->mem_type_mapping_tbl[idx];
1189 if (entry->mem_ptr) {
1190 strcpy(fw_dump_ptr, "========Start dump ");
1191 fw_dump_ptr += strlen("========Start dump ");
1193 strcpy(fw_dump_ptr, entry->mem_name);
1194 fw_dump_ptr += strlen(entry->mem_name);
1196 strcpy(fw_dump_ptr, "========\n");
1197 fw_dump_ptr += strlen("========\n");
1199 memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1200 fw_dump_ptr += entry->mem_size;
1202 strcpy(fw_dump_ptr, "\n========End dump========\n");
1203 fw_dump_ptr += strlen("\n========End dump========\n");
1207 /* device dump data will be free in device coredump release function
1210 dev_coredumpv(adapter->dev, dump_data, dump_len, GFP_KERNEL);
1211 mwifiex_dbg(adapter, MSG,
1212 "== mwifiex dump information to /sys/class/devcoredump end");
1215 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1216 struct memory_type_mapping *entry =
1217 &adapter->mem_type_mapping_tbl[idx];
1219 vfree(entry->mem_ptr);
1220 entry->mem_ptr = NULL;
1221 entry->mem_size = 0;
1226 EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump);
1229 * CFG802.11 network device handler for statistics retrieval.
1231 static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
1233 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1235 return &priv->stats;
1239 mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb,
1240 void *accel_priv, select_queue_fallback_t fallback)
1242 skb->priority = cfg80211_classify8021d(skb, NULL);
1243 return mwifiex_1d_to_wmm_queue[skb->priority];
1246 /* Network device handlers */
1247 static const struct net_device_ops mwifiex_netdev_ops = {
1248 .ndo_open = mwifiex_open,
1249 .ndo_stop = mwifiex_close,
1250 .ndo_start_xmit = mwifiex_hard_start_xmit,
1251 .ndo_set_mac_address = mwifiex_set_mac_address,
1252 .ndo_validate_addr = eth_validate_addr,
1253 .ndo_tx_timeout = mwifiex_tx_timeout,
1254 .ndo_get_stats = mwifiex_get_stats,
1255 .ndo_set_rx_mode = mwifiex_set_multicast_list,
1256 .ndo_select_queue = mwifiex_netdev_select_wmm_queue,
1260 * This function initializes the private structure parameters.
1262 * The following wait queues are initialized -
1263 * - IOCTL wait queue
1264 * - Command wait queue
1265 * - Statistics wait queue
1267 * ...and the following default parameters are set -
1268 * - Current key index : Set to 0
1269 * - Rate index : Set to auto
1270 * - Media connected : Set to disconnected
1271 * - Adhoc link sensed : Set to false
1272 * - Nick name : Set to null
1273 * - Number of Tx timeout : Set to 0
1274 * - Device address : Set to current address
1275 * - Rx histogram statistc : Set to 0
1277 * In addition, the CFG80211 work queue is also created.
1279 void mwifiex_init_priv_params(struct mwifiex_private *priv,
1280 struct net_device *dev)
1282 dev->netdev_ops = &mwifiex_netdev_ops;
1283 dev->destructor = free_netdev;
1284 /* Initialize private structure */
1285 priv->current_key_index = 0;
1286 priv->media_connected = false;
1287 memset(priv->mgmt_ie, 0,
1288 sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX);
1289 priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK;
1290 priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK;
1291 priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK;
1292 priv->gen_idx = MWIFIEX_AUTO_IDX_MASK;
1293 priv->num_tx_timeout = 0;
1294 ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr);
1295 memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN);
1297 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
1298 GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
1299 priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL);
1300 if (priv->hist_data)
1301 mwifiex_hist_data_reset(priv);
1306 * This function check if command is pending.
1308 int is_command_pending(struct mwifiex_adapter *adapter)
1310 unsigned long flags;
1311 int is_cmd_pend_q_empty;
1313 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
1314 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
1315 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
1317 return !is_cmd_pend_q_empty;
1321 * This is the RX work queue function.
1323 * It handles the RX operations.
1325 static void mwifiex_rx_work_queue(struct work_struct *work)
1327 struct mwifiex_adapter *adapter =
1328 container_of(work, struct mwifiex_adapter, rx_work);
1330 if (adapter->surprise_removed)
1332 mwifiex_process_rx(adapter);
1336 * This is the main work queue function.
1338 * It handles the main process, which in turn handles the complete
1339 * driver operations.
1341 static void mwifiex_main_work_queue(struct work_struct *work)
1343 struct mwifiex_adapter *adapter =
1344 container_of(work, struct mwifiex_adapter, main_work);
1346 if (adapter->surprise_removed)
1348 mwifiex_main_process(adapter);
1352 * This function gets called during PCIe function level reset. Required
1353 * code is extracted from mwifiex_remove_card()
1356 mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
1358 struct mwifiex_private *priv;
1364 wait_for_completion(adapter->fw_done);
1365 /* Caller should ensure we aren't suspending while this happens */
1366 reinit_completion(adapter->fw_done);
1368 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1369 mwifiex_deauthenticate(priv, NULL);
1371 /* We can no longer handle interrupts once we start doing the teardown
1374 if (adapter->if_ops.disable_int)
1375 adapter->if_ops.disable_int(adapter);
1377 adapter->surprise_removed = true;
1378 mwifiex_terminate_workqueue(adapter);
1381 for (i = 0; i < adapter->priv_num; i++) {
1382 priv = adapter->priv[i];
1383 if (priv && priv->netdev) {
1384 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
1385 if (netif_carrier_ok(priv->netdev))
1386 netif_carrier_off(priv->netdev);
1387 netif_device_detach(priv->netdev);
1391 mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n");
1393 mwifiex_shutdown_drv(adapter);
1394 if (adapter->if_ops.down_dev)
1395 adapter->if_ops.down_dev(adapter);
1397 mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n");
1398 if (atomic_read(&adapter->rx_pending) ||
1399 atomic_read(&adapter->tx_pending) ||
1400 atomic_read(&adapter->cmd_pending)) {
1401 mwifiex_dbg(adapter, ERROR,
1402 "rx_pending=%d, tx_pending=%d,\t"
1404 atomic_read(&adapter->rx_pending),
1405 atomic_read(&adapter->tx_pending),
1406 atomic_read(&adapter->cmd_pending));
1409 for (i = 0; i < adapter->priv_num; i++) {
1410 priv = adapter->priv[i];
1415 priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED)
1416 mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
1419 vfree(adapter->chan_stats);
1421 mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
1425 EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw);
1427 /* This function gets called during PCIe function level reset. Required
1428 * code is extracted from mwifiex_add_card()
1431 mwifiex_reinit_sw(struct mwifiex_adapter *adapter)
1435 mwifiex_init_lock_list(adapter);
1436 if (adapter->if_ops.up_dev)
1437 adapter->if_ops.up_dev(adapter);
1439 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1440 adapter->surprise_removed = false;
1441 init_waitqueue_head(&adapter->init_wait_q);
1442 adapter->is_suspended = false;
1443 adapter->hs_activated = false;
1444 adapter->is_cmd_timedout = 0;
1445 init_waitqueue_head(&adapter->hs_activate_wait_q);
1446 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1447 adapter->cmd_wait_q.status = 0;
1448 adapter->scan_wait_q_woken = false;
1450 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1451 adapter->rx_work_enabled = true;
1453 adapter->workqueue =
1454 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1455 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1456 if (!adapter->workqueue)
1459 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1461 if (adapter->rx_work_enabled) {
1462 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1466 if (!adapter->rx_workqueue)
1468 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1471 /* Register the device. Fill up the private data structure with
1472 * relevant information from the card. Some code extracted from
1473 * mwifiex_register_dev()
1475 mwifiex_dbg(adapter, INFO, "%s, mwifiex_init_hw_fw()...\n", __func__);
1477 if (mwifiex_init_hw_fw(adapter, false)) {
1478 mwifiex_dbg(adapter, ERROR,
1479 "%s: firmware init failed\n", __func__);
1483 /* _mwifiex_fw_dpc() does its own cleanup */
1484 ret = _mwifiex_fw_dpc(adapter->firmware, adapter);
1486 pr_err("Failed to bring up adapter: %d\n", ret);
1489 mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
1494 mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__);
1495 if (adapter->if_ops.unregister_dev)
1496 adapter->if_ops.unregister_dev(adapter);
1499 adapter->surprise_removed = true;
1500 mwifiex_terminate_workqueue(adapter);
1501 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1502 mwifiex_dbg(adapter, ERROR,
1503 "info: %s: shutdown mwifiex\n", __func__);
1504 mwifiex_shutdown_drv(adapter);
1507 complete_all(adapter->fw_done);
1508 mwifiex_dbg(adapter, INFO, "%s, error\n", __func__);
1512 EXPORT_SYMBOL_GPL(mwifiex_reinit_sw);
1514 static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv)
1516 struct mwifiex_adapter *adapter = priv;
1518 dev_dbg(adapter->dev, "%s: wake by wifi", __func__);
1519 adapter->wake_by_wifi = true;
1520 disable_irq_nosync(irq);
1522 /* Notify PM core we are wakeup source */
1523 pm_wakeup_event(adapter->dev, 0);
1529 static void mwifiex_probe_of(struct mwifiex_adapter *adapter)
1532 struct device *dev = adapter->dev;
1537 adapter->dt_node = dev->of_node;
1538 adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0);
1539 if (!adapter->irq_wakeup) {
1540 dev_dbg(dev, "fail to parse irq_wakeup from device tree\n");
1544 ret = devm_request_irq(dev, adapter->irq_wakeup,
1545 mwifiex_irq_wakeup_handler, IRQF_TRIGGER_LOW,
1546 "wifi_wake", adapter);
1548 dev_err(dev, "Failed to request irq_wakeup %d (%d)\n",
1549 adapter->irq_wakeup, ret);
1553 disable_irq(adapter->irq_wakeup);
1554 if (device_init_wakeup(dev, true)) {
1555 dev_err(dev, "fail to init wakeup for mwifiex\n");
1561 adapter->irq_wakeup = -1;
1565 * This function adds the card.
1567 * This function follows the following major steps to set up the device -
1568 * - Initialize software. This includes probing the card, registering
1569 * the interface operations table, and allocating/initializing the
1571 * - Set up the netlink socket
1572 * - Create and start the main work queue
1573 * - Register the device
1574 * - Initialize firmware and hardware
1575 * - Add logical interfaces
1578 mwifiex_add_card(void *card, struct completion *fw_done,
1579 struct mwifiex_if_ops *if_ops, u8 iface_type,
1582 struct mwifiex_adapter *adapter;
1584 if (mwifiex_register(card, dev, if_ops, (void **)&adapter)) {
1585 pr_err("%s: software init failed\n", __func__);
1589 mwifiex_probe_of(adapter);
1591 adapter->iface_type = iface_type;
1592 adapter->fw_done = fw_done;
1594 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1595 adapter->surprise_removed = false;
1596 init_waitqueue_head(&adapter->init_wait_q);
1597 adapter->is_suspended = false;
1598 adapter->hs_activated = false;
1599 init_waitqueue_head(&adapter->hs_activate_wait_q);
1600 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1601 adapter->cmd_wait_q.status = 0;
1602 adapter->scan_wait_q_woken = false;
1604 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB) {
1605 adapter->rx_work_enabled = true;
1606 pr_notice("rx work enabled, cpus %d\n", num_possible_cpus());
1609 adapter->workqueue =
1610 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1611 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1612 if (!adapter->workqueue)
1615 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1617 if (adapter->rx_work_enabled) {
1618 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1622 if (!adapter->rx_workqueue)
1625 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1628 /* Register the device. Fill up the private data structure with relevant
1629 information from the card. */
1630 if (adapter->if_ops.register_dev(adapter)) {
1631 pr_err("%s: failed to register mwifiex device\n", __func__);
1632 goto err_registerdev;
1635 if (mwifiex_init_hw_fw(adapter, true)) {
1636 pr_err("%s: firmware init failed\n", __func__);
1643 pr_debug("info: %s: unregister device\n", __func__);
1644 if (adapter->if_ops.unregister_dev)
1645 adapter->if_ops.unregister_dev(adapter);
1647 adapter->surprise_removed = true;
1648 mwifiex_terminate_workqueue(adapter);
1649 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1650 pr_debug("info: %s: shutdown mwifiex\n", __func__);
1651 mwifiex_shutdown_drv(adapter);
1654 mwifiex_free_adapter(adapter);
1660 EXPORT_SYMBOL_GPL(mwifiex_add_card);
1663 * This function removes the card.
1665 * This function follows the following major steps to remove the device -
1666 * - Stop data traffic
1667 * - Shutdown firmware
1668 * - Remove the logical interfaces
1669 * - Terminate the work queue
1670 * - Unregister the device
1671 * - Free the adapter structure
1673 int mwifiex_remove_card(struct mwifiex_adapter *adapter)
1675 struct mwifiex_private *priv = NULL;
1681 /* We can no longer handle interrupts once we start doing the teardown
1683 if (adapter->if_ops.disable_int)
1684 adapter->if_ops.disable_int(adapter);
1686 adapter->surprise_removed = true;
1688 mwifiex_terminate_workqueue(adapter);
1691 for (i = 0; i < adapter->priv_num; i++) {
1692 priv = adapter->priv[i];
1693 if (priv && priv->netdev) {
1694 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
1695 if (netif_carrier_ok(priv->netdev))
1696 netif_carrier_off(priv->netdev);
1700 mwifiex_dbg(adapter, CMD,
1701 "cmd: calling mwifiex_shutdown_drv...\n");
1703 mwifiex_shutdown_drv(adapter);
1704 mwifiex_dbg(adapter, CMD,
1705 "cmd: mwifiex_shutdown_drv done\n");
1706 if (atomic_read(&adapter->rx_pending) ||
1707 atomic_read(&adapter->tx_pending) ||
1708 atomic_read(&adapter->cmd_pending)) {
1709 mwifiex_dbg(adapter, ERROR,
1710 "rx_pending=%d, tx_pending=%d,\t"
1712 atomic_read(&adapter->rx_pending),
1713 atomic_read(&adapter->tx_pending),
1714 atomic_read(&adapter->cmd_pending));
1717 for (i = 0; i < adapter->priv_num; i++) {
1718 priv = adapter->priv[i];
1725 priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED)
1726 mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
1729 vfree(adapter->chan_stats);
1731 wiphy_unregister(adapter->wiphy);
1732 wiphy_free(adapter->wiphy);
1734 if (adapter->irq_wakeup >= 0)
1735 device_init_wakeup(adapter->dev, false);
1737 /* Unregister device */
1738 mwifiex_dbg(adapter, INFO,
1739 "info: unregister device\n");
1740 if (adapter->if_ops.unregister_dev)
1741 adapter->if_ops.unregister_dev(adapter);
1742 /* Free adapter structure */
1743 mwifiex_dbg(adapter, INFO,
1744 "info: free adapter\n");
1745 mwifiex_free_adapter(adapter);
1750 EXPORT_SYMBOL_GPL(mwifiex_remove_card);
1752 void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
1753 const char *fmt, ...)
1755 struct va_format vaf;
1758 if (!(adapter->debug_mask & mask))
1761 va_start(args, fmt);
1767 dev_info(adapter->dev, "%pV", &vaf);
1769 pr_info("%pV", &vaf);
1773 EXPORT_SYMBOL_GPL(_mwifiex_dbg);
1776 * This function initializes the module.
1778 * The debug FS is also initialized if configured.
1781 mwifiex_init_module(void)
1783 #ifdef CONFIG_DEBUG_FS
1784 mwifiex_debugfs_init();
1790 * This function cleans up the module.
1792 * The debug FS is removed if available.
1795 mwifiex_cleanup_module(void)
1797 #ifdef CONFIG_DEBUG_FS
1798 mwifiex_debugfs_remove();
1802 module_init(mwifiex_init_module);
1803 module_exit(mwifiex_cleanup_module);
1805 MODULE_AUTHOR("Marvell International Ltd.");
1806 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION);
1807 MODULE_VERSION(VERSION);
1808 MODULE_LICENSE("GPL v2");