2 * Marvell Wireless LAN device driver: major functions
4 * Copyright (C) 2011, 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.
27 const char driver_version[] = "mwifiex " VERSION " (%s) ";
30 * This function registers the device and performs all the necessary
33 * The following initialization operations are performed -
34 * - Allocate adapter structure
35 * - Save interface specific operations table in adapter
36 * - Call interface specific initialization routine
37 * - Allocate private structures
38 * - Set default adapter structure parameters
41 * In case of any errors during inittialization, this function also ensures
42 * proper cleanup before exiting.
44 static int mwifiex_register(void *card, struct mwifiex_if_ops *if_ops,
47 struct mwifiex_adapter *adapter;
50 adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL);
57 /* Save interface specific operations in adapter */
58 memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));
60 /* card specific initialization has been deferred until now .. */
61 if (adapter->if_ops.init_if)
62 if (adapter->if_ops.init_if(adapter))
65 adapter->priv_num = 0;
67 for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) {
68 /* Allocate memory for private structure */
70 kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL);
71 if (!adapter->priv[i])
74 adapter->priv[i]->adapter = adapter;
77 mwifiex_init_lock_list(adapter);
79 init_timer(&adapter->cmd_timer);
80 adapter->cmd_timer.function = mwifiex_cmd_timeout_func;
81 adapter->cmd_timer.data = (unsigned long) adapter;
86 dev_dbg(adapter->dev, "info: leave mwifiex_register with error\n");
88 for (i = 0; i < adapter->priv_num; i++)
89 kfree(adapter->priv[i]);
97 * This function unregisters the device and performs all the necessary
100 * The following cleanup operations are performed -
102 * - Free beacon buffers
103 * - Free private structures
104 * - Free adapter structure
106 static int mwifiex_unregister(struct mwifiex_adapter *adapter)
110 del_timer(&adapter->cmd_timer);
112 /* Free private structures */
113 for (i = 0; i < adapter->priv_num; i++) {
114 if (adapter->priv[i]) {
115 mwifiex_free_curr_bcn(adapter->priv[i]);
116 kfree(adapter->priv[i]);
127 * This function is the main procedure of the driver and handles various driver
128 * operations. It runs in a loop and provides the core functionalities.
130 * The main responsibilities of this function are -
131 * - Ensure concurrency control
132 * - Handle pending interrupts and call interrupt handlers
133 * - Wake up the card if required
134 * - Handle command responses and call response handlers
135 * - Handle events and call event handlers
136 * - Execute pending commands
137 * - Transmit pending data packets
139 int mwifiex_main_process(struct mwifiex_adapter *adapter)
145 spin_lock_irqsave(&adapter->main_proc_lock, flags);
147 /* Check if already processing */
148 if (adapter->mwifiex_processing) {
149 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
152 adapter->mwifiex_processing = true;
153 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
157 if ((adapter->hw_status == MWIFIEX_HW_STATUS_CLOSING) ||
158 (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY))
161 /* Handle pending interrupt if any */
162 if (adapter->int_status) {
163 if (adapter->hs_activated)
164 mwifiex_process_hs_config(adapter);
165 if (adapter->if_ops.process_int_status)
166 adapter->if_ops.process_int_status(adapter);
169 /* Need to wake up the card ? */
170 if ((adapter->ps_state == PS_STATE_SLEEP) &&
171 (adapter->pm_wakeup_card_req &&
172 !adapter->pm_wakeup_fw_try) &&
173 (is_command_pending(adapter) ||
174 !mwifiex_wmm_lists_empty(adapter))) {
175 adapter->pm_wakeup_fw_try = true;
176 adapter->if_ops.wakeup(adapter);
180 if (IS_CARD_RX_RCVD(adapter)) {
181 adapter->pm_wakeup_fw_try = false;
182 if (adapter->ps_state == PS_STATE_SLEEP)
183 adapter->ps_state = PS_STATE_AWAKE;
185 /* We have tried to wakeup the card already */
186 if (adapter->pm_wakeup_fw_try)
188 if (adapter->ps_state != PS_STATE_AWAKE ||
189 adapter->tx_lock_flag)
192 if ((adapter->scan_processing &&
193 !adapter->scan_delay_cnt) || adapter->data_sent ||
194 mwifiex_wmm_lists_empty(adapter)) {
195 if (adapter->cmd_sent || adapter->curr_cmd ||
196 (!is_command_pending(adapter)))
201 /* Check Rx data for USB */
202 if (adapter->iface_type == MWIFIEX_USB)
203 while ((skb = skb_dequeue(&adapter->usb_rx_data_q)))
204 mwifiex_handle_rx_packet(adapter, skb);
206 /* Check for Cmd Resp */
207 if (adapter->cmd_resp_received) {
208 adapter->cmd_resp_received = false;
209 mwifiex_process_cmdresp(adapter);
211 /* call mwifiex back when init_fw is done */
212 if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) {
213 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
214 mwifiex_init_fw_complete(adapter);
218 /* Check for event */
219 if (adapter->event_received) {
220 adapter->event_received = false;
221 mwifiex_process_event(adapter);
224 /* Check if we need to confirm Sleep Request
225 received previously */
226 if (adapter->ps_state == PS_STATE_PRE_SLEEP) {
227 if (!adapter->cmd_sent && !adapter->curr_cmd)
228 mwifiex_check_ps_cond(adapter);
231 /* * The ps_state may have been changed during processing of
232 * Sleep Request event.
234 if ((adapter->ps_state == PS_STATE_SLEEP) ||
235 (adapter->ps_state == PS_STATE_PRE_SLEEP) ||
236 (adapter->ps_state == PS_STATE_SLEEP_CFM) ||
237 adapter->tx_lock_flag)
240 if (!adapter->cmd_sent && !adapter->curr_cmd) {
241 if (mwifiex_exec_next_cmd(adapter) == -1) {
247 if ((!adapter->scan_processing || adapter->scan_delay_cnt) &&
248 !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter)) {
249 mwifiex_wmm_process_tx(adapter);
250 if (adapter->hs_activated) {
251 adapter->is_hs_configured = false;
252 mwifiex_hs_activated_event
254 (adapter, MWIFIEX_BSS_ROLE_ANY),
259 if (adapter->delay_null_pkt && !adapter->cmd_sent &&
260 !adapter->curr_cmd && !is_command_pending(adapter) &&
261 mwifiex_wmm_lists_empty(adapter)) {
262 if (!mwifiex_send_null_packet
263 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
264 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
265 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) {
266 adapter->delay_null_pkt = false;
267 adapter->ps_state = PS_STATE_SLEEP;
273 spin_lock_irqsave(&adapter->main_proc_lock, flags);
274 if ((adapter->int_status) || IS_CARD_RX_RCVD(adapter)) {
275 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
279 adapter->mwifiex_processing = false;
280 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
283 if (adapter->hw_status == MWIFIEX_HW_STATUS_CLOSING)
284 mwifiex_shutdown_drv(adapter);
287 EXPORT_SYMBOL_GPL(mwifiex_main_process);
290 * This function frees the adapter structure.
292 * Additionally, this closes the netlink socket, frees the timers
293 * and private structures.
295 static void mwifiex_free_adapter(struct mwifiex_adapter *adapter)
298 pr_err("%s: adapter is NULL\n", __func__);
302 mwifiex_unregister(adapter);
303 pr_debug("info: %s: free adapter\n", __func__);
307 * This function gets firmware and initializes it.
309 * The main initialization steps followed are -
310 * - Download the correct firmware to card
311 * - Issue the init commands to firmware
313 static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
317 struct mwifiex_private *priv;
318 struct mwifiex_adapter *adapter = context;
319 struct mwifiex_fw_image fw;
322 dev_err(adapter->dev,
323 "Failed to get firmware %s\n", adapter->fw_name);
327 memset(&fw, 0, sizeof(struct mwifiex_fw_image));
328 adapter->firmware = firmware;
329 fw.fw_buf = (u8 *) adapter->firmware->data;
330 fw.fw_len = adapter->firmware->size;
332 if (adapter->if_ops.dnld_fw)
333 ret = adapter->if_ops.dnld_fw(adapter, &fw);
335 ret = mwifiex_dnld_fw(adapter, &fw);
339 dev_notice(adapter->dev, "WLAN FW is active\n");
341 adapter->init_wait_q_woken = false;
342 ret = mwifiex_init_fw(adapter);
346 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
349 /* Wait for mwifiex_init to complete */
350 wait_event_interruptible(adapter->init_wait_q,
351 adapter->init_wait_q_woken);
352 if (adapter->hw_status != MWIFIEX_HW_STATUS_READY)
355 priv = adapter->priv[MWIFIEX_BSS_ROLE_STA];
356 if (mwifiex_register_cfg80211(adapter)) {
357 dev_err(adapter->dev, "cannot register with cfg80211\n");
362 /* Create station interface by default */
363 if (!mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d",
364 NL80211_IFTYPE_STATION, NULL, NULL)) {
365 dev_err(adapter->dev, "cannot create default STA interface\n");
370 mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);
371 dev_notice(adapter->dev, "driver_version = %s\n", fmt);
375 mwifiex_del_virtual_intf(adapter->wiphy, priv->wdev);
378 pr_debug("info: %s: unregister device\n", __func__);
379 adapter->if_ops.unregister_dev(adapter);
381 release_firmware(adapter->firmware);
382 complete(&adapter->fw_load);
387 * This function initializes the hardware and gets firmware.
389 static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter)
393 init_completion(&adapter->fw_load);
394 ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name,
395 adapter->dev, GFP_KERNEL, adapter,
398 dev_err(adapter->dev,
399 "request_firmware_nowait() returned error %d\n", ret);
404 * CFG802.11 network device handler for open.
406 * Starts the data queue.
409 mwifiex_open(struct net_device *dev)
411 netif_tx_start_all_queues(dev);
416 * CFG802.11 network device handler for close.
419 mwifiex_close(struct net_device *dev)
421 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
423 if (priv->scan_request) {
424 dev_dbg(priv->adapter->dev, "aborting scan on ndo_stop\n");
425 cfg80211_scan_done(priv->scan_request, 1);
426 priv->scan_request = NULL;
433 * Add buffer into wmm tx queue and queue work to transmit it.
435 int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)
437 struct netdev_queue *txq;
438 int index = mwifiex_1d_to_wmm_queue[skb->priority];
440 if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) {
441 txq = netdev_get_tx_queue(priv->netdev, index);
442 if (!netif_tx_queue_stopped(txq)) {
443 netif_tx_stop_queue(txq);
444 dev_dbg(priv->adapter->dev, "stop queue: %d\n", index);
448 atomic_inc(&priv->adapter->tx_pending);
449 mwifiex_wmm_add_buf_txqueue(priv, skb);
451 if (priv->adapter->scan_delay_cnt)
452 atomic_set(&priv->adapter->is_tx_received, true);
454 queue_work(priv->adapter->workqueue, &priv->adapter->main_work);
460 * CFG802.11 network device handler for data transmission.
463 mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
465 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
466 struct sk_buff *new_skb;
467 struct mwifiex_txinfo *tx_info;
470 dev_dbg(priv->adapter->dev, "data: %lu BSS(%d-%d): Data <= kernel\n",
471 jiffies, priv->bss_type, priv->bss_num);
473 if (priv->adapter->surprise_removed) {
475 priv->stats.tx_dropped++;
478 if (!skb->len || (skb->len > ETH_FRAME_LEN)) {
479 dev_err(priv->adapter->dev, "Tx: bad skb len %d\n", skb->len);
481 priv->stats.tx_dropped++;
484 if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) {
485 dev_dbg(priv->adapter->dev,
486 "data: Tx: insufficient skb headroom %d\n",
488 /* Insufficient skb headroom - allocate a new skb */
490 skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
491 if (unlikely(!new_skb)) {
492 dev_err(priv->adapter->dev, "Tx: cannot alloca new_skb\n");
494 priv->stats.tx_dropped++;
499 dev_dbg(priv->adapter->dev, "info: new skb headroomd %d\n",
503 tx_info = MWIFIEX_SKB_TXCB(skb);
504 tx_info->bss_num = priv->bss_num;
505 tx_info->bss_type = priv->bss_type;
507 /* Record the current time the packet was queued; used to
508 * determine the amount of time the packet was queued in
509 * the driver before it was sent to the firmware.
510 * The delay is then sent along with the packet to the
511 * firmware for aggregate delay calculation for stats and
512 * MSDU lifetime expiry.
514 do_gettimeofday(&tv);
515 skb->tstamp = timeval_to_ktime(tv);
517 mwifiex_queue_tx_pkt(priv, skb);
523 * CFG802.11 network device handler for setting MAC address.
526 mwifiex_set_mac_address(struct net_device *dev, void *addr)
528 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
529 struct sockaddr *hw_addr = addr;
532 memcpy(priv->curr_addr, hw_addr->sa_data, ETH_ALEN);
534 /* Send request to firmware */
535 ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
536 HostCmd_ACT_GEN_SET, 0, NULL);
539 memcpy(priv->netdev->dev_addr, priv->curr_addr, ETH_ALEN);
541 dev_err(priv->adapter->dev,
542 "set mac address failed: ret=%d\n", ret);
544 memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN);
550 * CFG802.11 network device handler for setting multicast list.
552 static void mwifiex_set_multicast_list(struct net_device *dev)
554 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
555 struct mwifiex_multicast_list mcast_list;
557 if (dev->flags & IFF_PROMISC) {
558 mcast_list.mode = MWIFIEX_PROMISC_MODE;
559 } else if (dev->flags & IFF_ALLMULTI ||
560 netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) {
561 mcast_list.mode = MWIFIEX_ALL_MULTI_MODE;
563 mcast_list.mode = MWIFIEX_MULTICAST_MODE;
564 mcast_list.num_multicast_addr =
565 mwifiex_copy_mcast_addr(&mcast_list, dev);
567 mwifiex_request_set_multicast_list(priv, &mcast_list);
571 * CFG802.11 network device handler for transmission timeout.
574 mwifiex_tx_timeout(struct net_device *dev)
576 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
578 priv->num_tx_timeout++;
579 priv->tx_timeout_cnt++;
580 dev_err(priv->adapter->dev,
581 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
582 jiffies, priv->tx_timeout_cnt, priv->bss_type, priv->bss_num);
583 mwifiex_set_trans_start(dev);
585 if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&
586 priv->adapter->if_ops.card_reset) {
587 dev_err(priv->adapter->dev,
588 "tx_timeout_cnt exceeds threshold. Triggering card reset!\n");
589 priv->adapter->if_ops.card_reset(priv->adapter);
594 * CFG802.11 network device handler for statistics retrieval.
596 static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
598 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
604 mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb)
606 skb->priority = cfg80211_classify8021d(skb);
607 return mwifiex_1d_to_wmm_queue[skb->priority];
610 /* Network device handlers */
611 static const struct net_device_ops mwifiex_netdev_ops = {
612 .ndo_open = mwifiex_open,
613 .ndo_stop = mwifiex_close,
614 .ndo_start_xmit = mwifiex_hard_start_xmit,
615 .ndo_set_mac_address = mwifiex_set_mac_address,
616 .ndo_tx_timeout = mwifiex_tx_timeout,
617 .ndo_get_stats = mwifiex_get_stats,
618 .ndo_set_rx_mode = mwifiex_set_multicast_list,
619 .ndo_select_queue = mwifiex_netdev_select_wmm_queue,
623 * This function initializes the private structure parameters.
625 * The following wait queues are initialized -
627 * - Command wait queue
628 * - Statistics wait queue
630 * ...and the following default parameters are set -
631 * - Current key index : Set to 0
632 * - Rate index : Set to auto
633 * - Media connected : Set to disconnected
634 * - Adhoc link sensed : Set to false
635 * - Nick name : Set to null
636 * - Number of Tx timeout : Set to 0
637 * - Device address : Set to current address
639 * In addition, the CFG80211 work queue is also created.
641 void mwifiex_init_priv_params(struct mwifiex_private *priv,
642 struct net_device *dev)
644 dev->netdev_ops = &mwifiex_netdev_ops;
645 dev->destructor = free_netdev;
646 /* Initialize private structure */
647 priv->current_key_index = 0;
648 priv->media_connected = false;
649 memset(&priv->nick_name, 0, sizeof(priv->nick_name));
650 memset(priv->mgmt_ie, 0,
651 sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX);
652 priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK;
653 priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK;
654 priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK;
655 priv->rsn_idx = MWIFIEX_AUTO_IDX_MASK;
656 priv->num_tx_timeout = 0;
657 memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN);
661 * This function check if command is pending.
663 int is_command_pending(struct mwifiex_adapter *adapter)
666 int is_cmd_pend_q_empty;
668 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
669 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
670 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
672 return !is_cmd_pend_q_empty;
676 * This is the main work queue function.
678 * It handles the main process, which in turn handles the complete
681 static void mwifiex_main_work_queue(struct work_struct *work)
683 struct mwifiex_adapter *adapter =
684 container_of(work, struct mwifiex_adapter, main_work);
686 if (adapter->surprise_removed)
688 mwifiex_main_process(adapter);
692 * This function cancels all works in the queue and destroys
693 * the main workqueue.
696 mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter)
698 flush_workqueue(adapter->workqueue);
699 destroy_workqueue(adapter->workqueue);
700 adapter->workqueue = NULL;
704 * This function adds the card.
706 * This function follows the following major steps to set up the device -
707 * - Initialize software. This includes probing the card, registering
708 * the interface operations table, and allocating/initializing the
710 * - Set up the netlink socket
711 * - Create and start the main work queue
712 * - Register the device
713 * - Initialize firmware and hardware
714 * - Add logical interfaces
717 mwifiex_add_card(void *card, struct semaphore *sem,
718 struct mwifiex_if_ops *if_ops, u8 iface_type)
720 struct mwifiex_adapter *adapter;
722 if (down_interruptible(sem))
725 if (mwifiex_register(card, if_ops, (void **)&adapter)) {
726 pr_err("%s: software init failed\n", __func__);
730 adapter->iface_type = iface_type;
732 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
733 adapter->surprise_removed = false;
734 init_waitqueue_head(&adapter->init_wait_q);
735 adapter->is_suspended = false;
736 adapter->hs_activated = false;
737 init_waitqueue_head(&adapter->hs_activate_wait_q);
738 adapter->cmd_wait_q_required = false;
739 init_waitqueue_head(&adapter->cmd_wait_q.wait);
740 adapter->cmd_wait_q.status = 0;
741 adapter->scan_wait_q_woken = false;
743 adapter->workqueue = create_workqueue("MWIFIEX_WORK_QUEUE");
744 if (!adapter->workqueue)
747 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
749 /* Register the device. Fill up the private data structure with relevant
750 information from the card and request for the required IRQ. */
751 if (adapter->if_ops.register_dev(adapter)) {
752 pr_err("%s: failed to register mwifiex device\n", __func__);
753 goto err_registerdev;
756 if (mwifiex_init_hw_fw(adapter)) {
757 pr_err("%s: firmware init failed\n", __func__);
765 pr_debug("info: %s: unregister device\n", __func__);
766 if (adapter->if_ops.unregister_dev)
767 adapter->if_ops.unregister_dev(adapter);
769 adapter->surprise_removed = true;
770 mwifiex_terminate_workqueue(adapter);
772 if ((adapter->hw_status == MWIFIEX_HW_STATUS_FW_READY) ||
773 (adapter->hw_status == MWIFIEX_HW_STATUS_READY)) {
774 pr_debug("info: %s: shutdown mwifiex\n", __func__);
775 adapter->init_wait_q_woken = false;
777 if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS)
778 wait_event_interruptible(adapter->init_wait_q,
779 adapter->init_wait_q_woken);
782 mwifiex_free_adapter(adapter);
790 EXPORT_SYMBOL_GPL(mwifiex_add_card);
793 * This function removes the card.
795 * This function follows the following major steps to remove the device -
796 * - Stop data traffic
797 * - Shutdown firmware
798 * - Remove the logical interfaces
799 * - Terminate the work queue
800 * - Unregister the device
801 * - Free the adapter structure
803 int mwifiex_remove_card(struct mwifiex_adapter *adapter, struct semaphore *sem)
805 struct mwifiex_private *priv = NULL;
808 if (down_interruptible(sem))
814 adapter->surprise_removed = true;
817 for (i = 0; i < adapter->priv_num; i++) {
818 priv = adapter->priv[i];
819 if (priv && priv->netdev) {
820 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
821 if (netif_carrier_ok(priv->netdev))
822 netif_carrier_off(priv->netdev);
826 dev_dbg(adapter->dev, "cmd: calling mwifiex_shutdown_drv...\n");
827 adapter->init_wait_q_woken = false;
829 if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS)
830 wait_event_interruptible(adapter->init_wait_q,
831 adapter->init_wait_q_woken);
832 dev_dbg(adapter->dev, "cmd: mwifiex_shutdown_drv done\n");
833 if (atomic_read(&adapter->rx_pending) ||
834 atomic_read(&adapter->tx_pending) ||
835 atomic_read(&adapter->cmd_pending)) {
836 dev_err(adapter->dev, "rx_pending=%d, tx_pending=%d, "
838 atomic_read(&adapter->rx_pending),
839 atomic_read(&adapter->tx_pending),
840 atomic_read(&adapter->cmd_pending));
843 for (i = 0; i < adapter->priv_num; i++) {
844 priv = adapter->priv[i];
850 if (priv->wdev && priv->netdev)
851 mwifiex_del_virtual_intf(adapter->wiphy, priv->wdev);
855 priv = adapter->priv[0];
856 if (!priv || !priv->wdev)
859 wiphy_unregister(priv->wdev->wiphy);
860 wiphy_free(priv->wdev->wiphy);
862 for (i = 0; i < adapter->priv_num; i++) {
863 priv = adapter->priv[i];
868 mwifiex_terminate_workqueue(adapter);
870 /* Unregister device */
871 dev_dbg(adapter->dev, "info: unregister device\n");
872 if (adapter->if_ops.unregister_dev)
873 adapter->if_ops.unregister_dev(adapter);
874 /* Free adapter structure */
875 dev_dbg(adapter->dev, "info: free adapter\n");
876 mwifiex_free_adapter(adapter);
883 EXPORT_SYMBOL_GPL(mwifiex_remove_card);
886 * This function initializes the module.
888 * The debug FS is also initialized if configured.
891 mwifiex_init_module(void)
893 #ifdef CONFIG_DEBUG_FS
894 mwifiex_debugfs_init();
900 * This function cleans up the module.
902 * The debug FS is removed if available.
905 mwifiex_cleanup_module(void)
907 #ifdef CONFIG_DEBUG_FS
908 mwifiex_debugfs_remove();
912 module_init(mwifiex_init_module);
913 module_exit(mwifiex_cleanup_module);
915 MODULE_AUTHOR("Marvell International Ltd.");
916 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION);
917 MODULE_VERSION(VERSION);
918 MODULE_LICENSE("GPL v2");