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.
27 static unsigned int debug_mask = MWIFIEX_DEFAULT_DEBUG_MASK;
28 module_param(debug_mask, uint, 0);
29 MODULE_PARM_DESC(debug_mask, "bitmap for debug flags");
31 const char driver_version[] = "mwifiex " VERSION " (%s) ";
32 static char *cal_data_cfg;
33 module_param(cal_data_cfg, charp, 0);
35 static unsigned short driver_mode;
36 module_param(driver_mode, ushort, 0);
37 MODULE_PARM_DESC(driver_mode,
38 "station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7");
41 * This function registers the device and performs all the necessary
44 * The following initialization operations are performed -
45 * - Allocate adapter structure
46 * - Save interface specific operations table in adapter
47 * - Call interface specific initialization routine
48 * - Allocate private structures
49 * - Set default adapter structure parameters
52 * In case of any errors during inittialization, this function also ensures
53 * proper cleanup before exiting.
55 static int mwifiex_register(void *card, struct mwifiex_if_ops *if_ops,
58 struct mwifiex_adapter *adapter;
61 adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL);
68 /* Save interface specific operations in adapter */
69 memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));
70 adapter->debug_mask = debug_mask;
72 /* card specific initialization has been deferred until now .. */
73 if (adapter->if_ops.init_if)
74 if (adapter->if_ops.init_if(adapter))
77 adapter->priv_num = 0;
79 for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) {
80 /* Allocate memory for private structure */
82 kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL);
83 if (!adapter->priv[i])
86 adapter->priv[i]->adapter = adapter;
89 mwifiex_init_lock_list(adapter);
91 setup_timer(&adapter->cmd_timer, mwifiex_cmd_timeout_func,
92 (unsigned long)adapter);
97 mwifiex_dbg(adapter, ERROR,
98 "info: leave mwifiex_register with error\n");
100 for (i = 0; i < adapter->priv_num; i++)
101 kfree(adapter->priv[i]);
109 * This function unregisters the device and performs all the necessary
112 * The following cleanup operations are performed -
114 * - Free beacon buffers
115 * - Free private structures
116 * - Free adapter structure
118 static int mwifiex_unregister(struct mwifiex_adapter *adapter)
122 if (adapter->if_ops.cleanup_if)
123 adapter->if_ops.cleanup_if(adapter);
125 del_timer_sync(&adapter->cmd_timer);
127 /* Free private structures */
128 for (i = 0; i < adapter->priv_num; i++) {
129 if (adapter->priv[i]) {
130 mwifiex_free_curr_bcn(adapter->priv[i]);
131 kfree(adapter->priv[i]);
135 vfree(adapter->chan_stats);
140 void mwifiex_queue_main_work(struct mwifiex_adapter *adapter)
144 spin_lock_irqsave(&adapter->main_proc_lock, flags);
145 if (adapter->mwifiex_processing) {
146 adapter->more_task_flag = true;
147 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
149 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
150 queue_work(adapter->workqueue, &adapter->main_work);
153 EXPORT_SYMBOL_GPL(mwifiex_queue_main_work);
155 static void mwifiex_queue_rx_work(struct mwifiex_adapter *adapter)
159 spin_lock_irqsave(&adapter->rx_proc_lock, flags);
160 if (adapter->rx_processing) {
161 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
163 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
164 queue_work(adapter->rx_workqueue, &adapter->rx_work);
168 static int mwifiex_process_rx(struct mwifiex_adapter *adapter)
172 struct mwifiex_rxinfo *rx_info;
174 spin_lock_irqsave(&adapter->rx_proc_lock, flags);
175 if (adapter->rx_processing || adapter->rx_locked) {
176 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
179 adapter->rx_processing = true;
180 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
183 /* Check for Rx data */
184 while ((skb = skb_dequeue(&adapter->rx_data_q))) {
185 atomic_dec(&adapter->rx_pending);
186 if ((adapter->delay_main_work ||
187 adapter->iface_type == MWIFIEX_USB) &&
188 (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {
189 if (adapter->if_ops.submit_rem_rx_urbs)
190 adapter->if_ops.submit_rem_rx_urbs(adapter);
191 adapter->delay_main_work = false;
192 mwifiex_queue_main_work(adapter);
194 rx_info = MWIFIEX_SKB_RXCB(skb);
195 if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) {
196 if (adapter->if_ops.deaggr_pkt)
197 adapter->if_ops.deaggr_pkt(adapter, skb);
198 dev_kfree_skb_any(skb);
200 mwifiex_handle_rx_packet(adapter, skb);
203 spin_lock_irqsave(&adapter->rx_proc_lock, flags);
204 adapter->rx_processing = false;
205 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
214 * This function is the main procedure of the driver and handles various driver
215 * operations. It runs in a loop and provides the core functionalities.
217 * The main responsibilities of this function are -
218 * - Ensure concurrency control
219 * - Handle pending interrupts and call interrupt handlers
220 * - Wake up the card if required
221 * - Handle command responses and call response handlers
222 * - Handle events and call event handlers
223 * - Execute pending commands
224 * - Transmit pending data packets
226 int mwifiex_main_process(struct mwifiex_adapter *adapter)
231 spin_lock_irqsave(&adapter->main_proc_lock, flags);
233 /* Check if already processing */
234 if (adapter->mwifiex_processing || adapter->main_locked) {
235 adapter->more_task_flag = true;
236 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
239 adapter->mwifiex_processing = true;
240 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
244 if ((adapter->hw_status == MWIFIEX_HW_STATUS_CLOSING) ||
245 (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY))
248 /* For non-USB interfaces, If we process interrupts first, it
249 * would increase RX pending even further. Avoid this by
250 * checking if rx_pending has crossed high threshold and
251 * schedule rx work queue and then process interrupts.
252 * For USB interface, there are no interrupts. We already have
253 * HIGH_RX_PENDING check in usb.c
255 if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING &&
256 adapter->iface_type != MWIFIEX_USB) {
257 adapter->delay_main_work = true;
258 mwifiex_queue_rx_work(adapter);
262 /* Handle pending interrupt if any */
263 if (adapter->int_status) {
264 if (adapter->hs_activated)
265 mwifiex_process_hs_config(adapter);
266 if (adapter->if_ops.process_int_status)
267 adapter->if_ops.process_int_status(adapter);
270 if (adapter->rx_work_enabled && adapter->data_received)
271 mwifiex_queue_rx_work(adapter);
273 /* Need to wake up the card ? */
274 if ((adapter->ps_state == PS_STATE_SLEEP) &&
275 (adapter->pm_wakeup_card_req &&
276 !adapter->pm_wakeup_fw_try) &&
277 (is_command_pending(adapter) ||
278 !skb_queue_empty(&adapter->tx_data_q) ||
279 !mwifiex_wmm_lists_empty(adapter))) {
280 adapter->pm_wakeup_fw_try = true;
281 mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3));
282 adapter->if_ops.wakeup(adapter);
286 if (IS_CARD_RX_RCVD(adapter)) {
287 adapter->data_received = false;
288 adapter->pm_wakeup_fw_try = false;
289 del_timer(&adapter->wakeup_timer);
290 if (adapter->ps_state == PS_STATE_SLEEP)
291 adapter->ps_state = PS_STATE_AWAKE;
293 /* We have tried to wakeup the card already */
294 if (adapter->pm_wakeup_fw_try)
296 if (adapter->ps_state != PS_STATE_AWAKE ||
297 adapter->tx_lock_flag)
300 if ((!adapter->scan_chan_gap_enabled &&
301 adapter->scan_processing) || adapter->data_sent ||
302 (mwifiex_wmm_lists_empty(adapter) &&
303 skb_queue_empty(&adapter->tx_data_q))) {
304 if (adapter->cmd_sent || adapter->curr_cmd ||
305 (!is_command_pending(adapter)))
310 /* Check for event */
311 if (adapter->event_received) {
312 adapter->event_received = false;
313 mwifiex_process_event(adapter);
316 /* Check for Cmd Resp */
317 if (adapter->cmd_resp_received) {
318 adapter->cmd_resp_received = false;
319 mwifiex_process_cmdresp(adapter);
321 /* call mwifiex back when init_fw is done */
322 if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) {
323 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
324 mwifiex_init_fw_complete(adapter);
328 /* Check if we need to confirm Sleep Request
329 received previously */
330 if (adapter->ps_state == PS_STATE_PRE_SLEEP) {
331 if (!adapter->cmd_sent && !adapter->curr_cmd)
332 mwifiex_check_ps_cond(adapter);
335 /* * The ps_state may have been changed during processing of
336 * Sleep Request event.
338 if ((adapter->ps_state == PS_STATE_SLEEP) ||
339 (adapter->ps_state == PS_STATE_PRE_SLEEP) ||
340 (adapter->ps_state == PS_STATE_SLEEP_CFM) ||
341 adapter->tx_lock_flag){
345 if (!adapter->cmd_sent && !adapter->curr_cmd) {
346 if (mwifiex_exec_next_cmd(adapter) == -1) {
352 if ((adapter->scan_chan_gap_enabled ||
353 !adapter->scan_processing) &&
354 !adapter->data_sent &&
355 !skb_queue_empty(&adapter->tx_data_q)) {
356 mwifiex_process_tx_queue(adapter);
357 if (adapter->hs_activated) {
358 adapter->is_hs_configured = false;
359 mwifiex_hs_activated_event
361 (adapter, MWIFIEX_BSS_ROLE_ANY),
366 if ((adapter->scan_chan_gap_enabled ||
367 !adapter->scan_processing) &&
368 !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter)) {
369 mwifiex_wmm_process_tx(adapter);
370 if (adapter->hs_activated) {
371 adapter->is_hs_configured = false;
372 mwifiex_hs_activated_event
374 (adapter, MWIFIEX_BSS_ROLE_ANY),
379 if (adapter->delay_null_pkt && !adapter->cmd_sent &&
380 !adapter->curr_cmd && !is_command_pending(adapter) &&
381 (mwifiex_wmm_lists_empty(adapter) &&
382 skb_queue_empty(&adapter->tx_data_q))) {
383 if (!mwifiex_send_null_packet
384 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
385 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
386 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) {
387 adapter->delay_null_pkt = false;
388 adapter->ps_state = PS_STATE_SLEEP;
394 spin_lock_irqsave(&adapter->main_proc_lock, flags);
395 if (adapter->more_task_flag) {
396 adapter->more_task_flag = false;
397 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
400 adapter->mwifiex_processing = false;
401 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
404 if (adapter->hw_status == MWIFIEX_HW_STATUS_CLOSING)
405 mwifiex_shutdown_drv(adapter);
408 EXPORT_SYMBOL_GPL(mwifiex_main_process);
411 * This function frees the adapter structure.
413 * Additionally, this closes the netlink socket, frees the timers
414 * and private structures.
416 static void mwifiex_free_adapter(struct mwifiex_adapter *adapter)
419 pr_err("%s: adapter is NULL\n", __func__);
423 mwifiex_unregister(adapter);
424 pr_debug("info: %s: free adapter\n", __func__);
428 * This function cancels all works in the queue and destroys
429 * the main workqueue.
431 static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter)
433 flush_workqueue(adapter->workqueue);
434 destroy_workqueue(adapter->workqueue);
435 adapter->workqueue = NULL;
437 if (adapter->rx_workqueue) {
438 flush_workqueue(adapter->rx_workqueue);
439 destroy_workqueue(adapter->rx_workqueue);
440 adapter->rx_workqueue = NULL;
445 * This function gets firmware and initializes it.
447 * The main initialization steps followed are -
448 * - Download the correct firmware to card
449 * - Issue the init commands to firmware
451 static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
455 struct mwifiex_private *priv;
456 struct mwifiex_adapter *adapter = context;
457 struct mwifiex_fw_image fw;
458 struct semaphore *sem = adapter->card_sem;
459 bool init_failed = false;
460 struct wireless_dev *wdev;
463 mwifiex_dbg(adapter, ERROR,
464 "Failed to get firmware %s\n", adapter->fw_name);
468 memset(&fw, 0, sizeof(struct mwifiex_fw_image));
469 adapter->firmware = firmware;
470 fw.fw_buf = (u8 *) adapter->firmware->data;
471 fw.fw_len = adapter->firmware->size;
473 if (adapter->if_ops.dnld_fw)
474 ret = adapter->if_ops.dnld_fw(adapter, &fw);
476 ret = mwifiex_dnld_fw(adapter, &fw);
480 mwifiex_dbg(adapter, MSG, "WLAN FW is active\n");
483 if ((request_firmware(&adapter->cal_data, cal_data_cfg,
485 mwifiex_dbg(adapter, ERROR,
486 "Cal data request_firmware() failed\n");
489 /* enable host interrupt after fw dnld is successful */
490 if (adapter->if_ops.enable_int) {
491 if (adapter->if_ops.enable_int(adapter))
495 adapter->init_wait_q_woken = false;
496 ret = mwifiex_init_fw(adapter);
500 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
503 /* Wait for mwifiex_init to complete */
504 wait_event_interruptible(adapter->init_wait_q,
505 adapter->init_wait_q_woken);
506 if (adapter->hw_status != MWIFIEX_HW_STATUS_READY)
509 priv = adapter->priv[MWIFIEX_BSS_ROLE_STA];
510 if (mwifiex_register_cfg80211(adapter)) {
511 mwifiex_dbg(adapter, ERROR,
512 "cannot register with cfg80211\n");
516 if (mwifiex_init_channel_scan_gap(adapter)) {
517 mwifiex_dbg(adapter, ERROR,
518 "could not init channel stats table\n");
523 driver_mode &= MWIFIEX_DRIVER_MODE_BITMASK;
524 driver_mode |= MWIFIEX_DRIVER_MODE_STA;
528 /* Create station interface by default */
529 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM,
530 NL80211_IFTYPE_STATION, NULL, NULL);
532 mwifiex_dbg(adapter, ERROR,
533 "cannot create default STA interface\n");
538 if (driver_mode & MWIFIEX_DRIVER_MODE_UAP) {
539 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM,
540 NL80211_IFTYPE_AP, NULL, NULL);
542 mwifiex_dbg(adapter, ERROR,
543 "cannot create AP interface\n");
549 if (driver_mode & MWIFIEX_DRIVER_MODE_P2P) {
550 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", NET_NAME_ENUM,
551 NL80211_IFTYPE_P2P_CLIENT, NULL,
554 mwifiex_dbg(adapter, ERROR,
555 "cannot create p2p client interface\n");
562 mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);
563 mwifiex_dbg(adapter, MSG, "driver_version = %s\n", fmt);
567 wiphy_unregister(adapter->wiphy);
568 wiphy_free(adapter->wiphy);
570 if (adapter->if_ops.disable_int)
571 adapter->if_ops.disable_int(adapter);
573 mwifiex_dbg(adapter, ERROR,
574 "info: %s: unregister device\n", __func__);
575 if (adapter->if_ops.unregister_dev)
576 adapter->if_ops.unregister_dev(adapter);
578 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
579 pr_debug("info: %s: shutdown mwifiex\n", __func__);
580 adapter->init_wait_q_woken = false;
582 if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS)
583 wait_event_interruptible(adapter->init_wait_q,
584 adapter->init_wait_q_woken);
586 adapter->surprise_removed = true;
587 mwifiex_terminate_workqueue(adapter);
590 if (adapter->cal_data) {
591 release_firmware(adapter->cal_data);
592 adapter->cal_data = NULL;
594 if (adapter->firmware) {
595 release_firmware(adapter->firmware);
596 adapter->firmware = NULL;
599 mwifiex_free_adapter(adapter);
605 * This function initializes the hardware and gets firmware.
607 static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter)
611 ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name,
612 adapter->dev, GFP_KERNEL, adapter,
615 mwifiex_dbg(adapter, ERROR,
616 "request_firmware_nowait error %d\n", ret);
621 * CFG802.11 network device handler for open.
623 * Starts the data queue.
626 mwifiex_open(struct net_device *dev)
628 netif_carrier_off(dev);
634 * CFG802.11 network device handler for close.
637 mwifiex_close(struct net_device *dev)
639 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
641 if (priv->scan_request) {
642 mwifiex_dbg(priv->adapter, INFO,
643 "aborting scan on ndo_stop\n");
644 cfg80211_scan_done(priv->scan_request, 1);
645 priv->scan_request = NULL;
646 priv->scan_aborting = true;
653 * Add buffer into wmm tx queue and queue work to transmit it.
655 int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)
657 struct netdev_queue *txq;
658 int index = mwifiex_1d_to_wmm_queue[skb->priority];
660 if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) {
661 txq = netdev_get_tx_queue(priv->netdev, index);
662 if (!netif_tx_queue_stopped(txq)) {
663 netif_tx_stop_queue(txq);
664 mwifiex_dbg(priv->adapter, DATA,
665 "stop queue: %d\n", index);
669 atomic_inc(&priv->adapter->tx_pending);
670 mwifiex_wmm_add_buf_txqueue(priv, skb);
672 mwifiex_queue_main_work(priv->adapter);
678 mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv,
679 struct sk_buff *skb, u8 flag, u64 *cookie)
681 struct sk_buff *orig_skb = skb;
682 struct mwifiex_txinfo *tx_info, *orig_tx_info;
684 skb = skb_clone(skb, GFP_ATOMIC);
689 spin_lock_irqsave(&priv->ack_status_lock, flags);
690 id = idr_alloc(&priv->ack_status_frames, orig_skb,
691 1, 0xff, GFP_ATOMIC);
692 spin_unlock_irqrestore(&priv->ack_status_lock, flags);
695 tx_info = MWIFIEX_SKB_TXCB(skb);
696 tx_info->ack_frame_id = id;
697 tx_info->flags |= flag;
698 orig_tx_info = MWIFIEX_SKB_TXCB(orig_skb);
699 orig_tx_info->ack_frame_id = id;
700 orig_tx_info->flags |= flag;
702 if (flag == MWIFIEX_BUF_FLAG_ACTION_TX_STATUS && cookie)
703 orig_tx_info->cookie = *cookie;
705 } else if (skb_shared(skb)) {
712 /* couldn't clone -- lose tx status ... */
720 * CFG802.11 network device handler for data transmission.
723 mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
725 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
726 struct sk_buff *new_skb;
727 struct mwifiex_txinfo *tx_info;
730 mwifiex_dbg(priv->adapter, DATA,
731 "data: %lu BSS(%d-%d): Data <= kernel\n",
732 jiffies, priv->bss_type, priv->bss_num);
734 if (priv->adapter->surprise_removed) {
736 priv->stats.tx_dropped++;
739 if (!skb->len || (skb->len > ETH_FRAME_LEN)) {
740 mwifiex_dbg(priv->adapter, ERROR,
741 "Tx: bad skb len %d\n", skb->len);
743 priv->stats.tx_dropped++;
746 if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) {
747 mwifiex_dbg(priv->adapter, DATA,
748 "data: Tx: insufficient skb headroom %d\n",
750 /* Insufficient skb headroom - allocate a new skb */
752 skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
753 if (unlikely(!new_skb)) {
754 mwifiex_dbg(priv->adapter, ERROR,
755 "Tx: cannot alloca new_skb\n");
757 priv->stats.tx_dropped++;
762 mwifiex_dbg(priv->adapter, INFO,
763 "info: new skb headroomd %d\n",
767 tx_info = MWIFIEX_SKB_TXCB(skb);
768 memset(tx_info, 0, sizeof(*tx_info));
769 tx_info->bss_num = priv->bss_num;
770 tx_info->bss_type = priv->bss_type;
771 tx_info->pkt_len = skb->len;
773 multicast = is_multicast_ether_addr(skb->data);
775 if (unlikely(!multicast && skb->sk &&
776 skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS &&
777 priv->adapter->fw_api_ver == MWIFIEX_FW_V15))
778 skb = mwifiex_clone_skb_for_tx_status(priv,
780 MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS, NULL);
782 /* Record the current time the packet was queued; used to
783 * determine the amount of time the packet was queued in
784 * the driver before it was sent to the firmware.
785 * The delay is then sent along with the packet to the
786 * firmware for aggregate delay calculation for stats and
787 * MSDU lifetime expiry.
789 __net_timestamp(skb);
791 if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
792 priv->bss_type == MWIFIEX_BSS_TYPE_STA &&
793 !ether_addr_equal_unaligned(priv->cfg_bssid, skb->data)) {
794 if (priv->adapter->auto_tdls && priv->check_tdls_tx)
795 mwifiex_tdls_check_tx(priv, skb);
798 mwifiex_queue_tx_pkt(priv, skb);
804 * CFG802.11 network device handler for setting MAC address.
807 mwifiex_set_mac_address(struct net_device *dev, void *addr)
809 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
810 struct sockaddr *hw_addr = addr;
813 memcpy(priv->curr_addr, hw_addr->sa_data, ETH_ALEN);
815 /* Send request to firmware */
816 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
817 HostCmd_ACT_GEN_SET, 0, NULL, true);
820 memcpy(priv->netdev->dev_addr, priv->curr_addr, ETH_ALEN);
822 mwifiex_dbg(priv->adapter, ERROR,
823 "set mac address failed: ret=%d\n", ret);
825 memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN);
831 * CFG802.11 network device handler for setting multicast list.
833 static void mwifiex_set_multicast_list(struct net_device *dev)
835 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
836 struct mwifiex_multicast_list mcast_list;
838 if (dev->flags & IFF_PROMISC) {
839 mcast_list.mode = MWIFIEX_PROMISC_MODE;
840 } else if (dev->flags & IFF_ALLMULTI ||
841 netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) {
842 mcast_list.mode = MWIFIEX_ALL_MULTI_MODE;
844 mcast_list.mode = MWIFIEX_MULTICAST_MODE;
845 mcast_list.num_multicast_addr =
846 mwifiex_copy_mcast_addr(&mcast_list, dev);
848 mwifiex_request_set_multicast_list(priv, &mcast_list);
852 * CFG802.11 network device handler for transmission timeout.
855 mwifiex_tx_timeout(struct net_device *dev)
857 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
859 priv->num_tx_timeout++;
860 priv->tx_timeout_cnt++;
861 mwifiex_dbg(priv->adapter, ERROR,
862 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
863 jiffies, priv->tx_timeout_cnt, priv->bss_type,
865 mwifiex_set_trans_start(dev);
867 if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&
868 priv->adapter->if_ops.card_reset) {
869 mwifiex_dbg(priv->adapter, ERROR,
870 "tx_timeout_cnt exceeds threshold.\t"
871 "Triggering card reset!\n");
872 priv->adapter->if_ops.card_reset(priv->adapter);
876 void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter)
879 char drv_version[64];
880 struct usb_card_rec *cardp;
881 struct sdio_mmc_card *sdio_card;
882 struct mwifiex_private *priv;
884 struct netdev_queue *txq;
885 struct mwifiex_debug_info *debug_info;
887 if (adapter->drv_info_dump) {
888 vfree(adapter->drv_info_dump);
889 adapter->drv_info_dump = NULL;
890 adapter->drv_info_size = 0;
893 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n");
895 adapter->drv_info_dump = vzalloc(MWIFIEX_DRV_INFO_SIZE_MAX);
897 if (!adapter->drv_info_dump)
900 p = (char *)(adapter->drv_info_dump);
901 p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
903 mwifiex_drv_get_driver_version(adapter, drv_version,
904 sizeof(drv_version) - 1);
905 p += sprintf(p, "driver_version = %s\n", drv_version);
907 if (adapter->iface_type == MWIFIEX_USB) {
908 cardp = (struct usb_card_rec *)adapter->card;
909 p += sprintf(p, "tx_cmd_urb_pending = %d\n",
910 atomic_read(&cardp->tx_cmd_urb_pending));
911 p += sprintf(p, "tx_data_urb_pending = %d\n",
912 atomic_read(&cardp->tx_data_urb_pending));
913 p += sprintf(p, "rx_cmd_urb_pending = %d\n",
914 atomic_read(&cardp->rx_cmd_urb_pending));
915 p += sprintf(p, "rx_data_urb_pending = %d\n",
916 atomic_read(&cardp->rx_data_urb_pending));
919 p += sprintf(p, "tx_pending = %d\n",
920 atomic_read(&adapter->tx_pending));
921 p += sprintf(p, "rx_pending = %d\n",
922 atomic_read(&adapter->rx_pending));
924 if (adapter->iface_type == MWIFIEX_SDIO) {
925 sdio_card = (struct sdio_mmc_card *)adapter->card;
926 p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
927 sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port);
928 p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
929 sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port);
932 for (i = 0; i < adapter->priv_num; i++) {
933 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
935 priv = adapter->priv[i];
936 p += sprintf(p, "\n[interface : \"%s\"]\n",
938 p += sprintf(p, "wmm_tx_pending[0] = %d\n",
939 atomic_read(&priv->wmm_tx_pending[0]));
940 p += sprintf(p, "wmm_tx_pending[1] = %d\n",
941 atomic_read(&priv->wmm_tx_pending[1]));
942 p += sprintf(p, "wmm_tx_pending[2] = %d\n",
943 atomic_read(&priv->wmm_tx_pending[2]));
944 p += sprintf(p, "wmm_tx_pending[3] = %d\n",
945 atomic_read(&priv->wmm_tx_pending[3]));
946 p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ?
947 "Disconnected" : "Connected");
948 p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev)
950 for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) {
951 txq = netdev_get_tx_queue(priv->netdev, idx);
952 p += sprintf(p, "tx queue %d:%s ", idx,
953 netif_tx_queue_stopped(txq) ?
954 "stopped" : "started");
956 p += sprintf(p, "\n%s: num_tx_timeout = %d\n",
957 priv->netdev->name, priv->num_tx_timeout);
960 if (adapter->iface_type == MWIFIEX_SDIO) {
961 p += sprintf(p, "\n=== SDIO register dump===\n");
962 if (adapter->if_ops.reg_dump)
963 p += adapter->if_ops.reg_dump(adapter, p);
966 p += sprintf(p, "\n=== more debug information\n");
967 debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);
969 for (i = 0; i < adapter->priv_num; i++) {
970 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
972 priv = adapter->priv[i];
973 mwifiex_get_debug_info(priv, debug_info);
974 p += mwifiex_debug_info_to_buffer(priv, p, debug_info);
980 adapter->drv_info_size = p - adapter->drv_info_dump;
981 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n");
983 EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump);
985 void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter)
987 u8 idx, *dump_data, *fw_dump_ptr;
990 dump_len = (strlen("========Start dump driverinfo========\n") +
991 adapter->drv_info_size +
992 strlen("\n========End dump========\n"));
994 for (idx = 0; idx < adapter->num_mem_types; idx++) {
995 struct memory_type_mapping *entry =
996 &adapter->mem_type_mapping_tbl[idx];
998 if (entry->mem_ptr) {
999 dump_len += (strlen("========Start dump ") +
1000 strlen(entry->mem_name) +
1001 strlen("========\n") +
1002 (entry->mem_size + 1) +
1003 strlen("\n========End dump========\n"));
1007 dump_data = vzalloc(dump_len + 1);
1011 fw_dump_ptr = dump_data;
1013 /* Dump all the memory data into single file, a userspace script will
1014 * be used to split all the memory data to multiple files
1016 mwifiex_dbg(adapter, MSG,
1017 "== mwifiex dump information to /sys/class/devcoredump start");
1019 strcpy(fw_dump_ptr, "========Start dump driverinfo========\n");
1020 fw_dump_ptr += strlen("========Start dump driverinfo========\n");
1021 memcpy(fw_dump_ptr, adapter->drv_info_dump, adapter->drv_info_size);
1022 fw_dump_ptr += adapter->drv_info_size;
1023 strcpy(fw_dump_ptr, "\n========End dump========\n");
1024 fw_dump_ptr += strlen("\n========End dump========\n");
1026 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1027 struct memory_type_mapping *entry =
1028 &adapter->mem_type_mapping_tbl[idx];
1030 if (entry->mem_ptr) {
1031 strcpy(fw_dump_ptr, "========Start dump ");
1032 fw_dump_ptr += strlen("========Start dump ");
1034 strcpy(fw_dump_ptr, entry->mem_name);
1035 fw_dump_ptr += strlen(entry->mem_name);
1037 strcpy(fw_dump_ptr, "========\n");
1038 fw_dump_ptr += strlen("========\n");
1040 memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1041 fw_dump_ptr += entry->mem_size;
1043 strcpy(fw_dump_ptr, "\n========End dump========\n");
1044 fw_dump_ptr += strlen("\n========End dump========\n");
1048 /* device dump data will be free in device coredump release function
1051 dev_coredumpv(adapter->dev, dump_data, dump_len, GFP_KERNEL);
1052 mwifiex_dbg(adapter, MSG,
1053 "== mwifiex dump information to /sys/class/devcoredump end");
1056 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1057 struct memory_type_mapping *entry =
1058 &adapter->mem_type_mapping_tbl[idx];
1060 if (entry->mem_ptr) {
1061 vfree(entry->mem_ptr);
1062 entry->mem_ptr = NULL;
1064 entry->mem_size = 0;
1067 if (adapter->drv_info_dump) {
1068 vfree(adapter->drv_info_dump);
1069 adapter->drv_info_dump = NULL;
1070 adapter->drv_info_size = 0;
1073 EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump);
1076 * CFG802.11 network device handler for statistics retrieval.
1078 static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
1080 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1082 return &priv->stats;
1086 mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb,
1087 void *accel_priv, select_queue_fallback_t fallback)
1089 skb->priority = cfg80211_classify8021d(skb, NULL);
1090 return mwifiex_1d_to_wmm_queue[skb->priority];
1093 /* Network device handlers */
1094 static const struct net_device_ops mwifiex_netdev_ops = {
1095 .ndo_open = mwifiex_open,
1096 .ndo_stop = mwifiex_close,
1097 .ndo_start_xmit = mwifiex_hard_start_xmit,
1098 .ndo_set_mac_address = mwifiex_set_mac_address,
1099 .ndo_tx_timeout = mwifiex_tx_timeout,
1100 .ndo_get_stats = mwifiex_get_stats,
1101 .ndo_set_rx_mode = mwifiex_set_multicast_list,
1102 .ndo_select_queue = mwifiex_netdev_select_wmm_queue,
1106 * This function initializes the private structure parameters.
1108 * The following wait queues are initialized -
1109 * - IOCTL wait queue
1110 * - Command wait queue
1111 * - Statistics wait queue
1113 * ...and the following default parameters are set -
1114 * - Current key index : Set to 0
1115 * - Rate index : Set to auto
1116 * - Media connected : Set to disconnected
1117 * - Adhoc link sensed : Set to false
1118 * - Nick name : Set to null
1119 * - Number of Tx timeout : Set to 0
1120 * - Device address : Set to current address
1121 * - Rx histogram statistc : Set to 0
1123 * In addition, the CFG80211 work queue is also created.
1125 void mwifiex_init_priv_params(struct mwifiex_private *priv,
1126 struct net_device *dev)
1128 dev->netdev_ops = &mwifiex_netdev_ops;
1129 dev->destructor = free_netdev;
1130 /* Initialize private structure */
1131 priv->current_key_index = 0;
1132 priv->media_connected = false;
1133 memset(priv->mgmt_ie, 0,
1134 sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX);
1135 priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK;
1136 priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK;
1137 priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK;
1138 priv->gen_idx = MWIFIEX_AUTO_IDX_MASK;
1139 priv->num_tx_timeout = 0;
1140 ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr);
1141 memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN);
1143 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
1144 GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
1145 priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL);
1146 if (priv->hist_data)
1147 mwifiex_hist_data_reset(priv);
1152 * This function check if command is pending.
1154 int is_command_pending(struct mwifiex_adapter *adapter)
1156 unsigned long flags;
1157 int is_cmd_pend_q_empty;
1159 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
1160 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
1161 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
1163 return !is_cmd_pend_q_empty;
1167 * This is the RX work queue function.
1169 * It handles the RX operations.
1171 static void mwifiex_rx_work_queue(struct work_struct *work)
1173 struct mwifiex_adapter *adapter =
1174 container_of(work, struct mwifiex_adapter, rx_work);
1176 if (adapter->surprise_removed)
1178 mwifiex_process_rx(adapter);
1182 * This is the main work queue function.
1184 * It handles the main process, which in turn handles the complete
1185 * driver operations.
1187 static void mwifiex_main_work_queue(struct work_struct *work)
1189 struct mwifiex_adapter *adapter =
1190 container_of(work, struct mwifiex_adapter, main_work);
1192 if (adapter->surprise_removed)
1194 mwifiex_main_process(adapter);
1198 * This function adds the card.
1200 * This function follows the following major steps to set up the device -
1201 * - Initialize software. This includes probing the card, registering
1202 * the interface operations table, and allocating/initializing the
1204 * - Set up the netlink socket
1205 * - Create and start the main work queue
1206 * - Register the device
1207 * - Initialize firmware and hardware
1208 * - Add logical interfaces
1211 mwifiex_add_card(void *card, struct semaphore *sem,
1212 struct mwifiex_if_ops *if_ops, u8 iface_type)
1214 struct mwifiex_adapter *adapter;
1216 if (down_interruptible(sem))
1219 if (mwifiex_register(card, if_ops, (void **)&adapter)) {
1220 pr_err("%s: software init failed\n", __func__);
1224 adapter->iface_type = iface_type;
1225 adapter->card_sem = sem;
1227 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1228 adapter->surprise_removed = false;
1229 init_waitqueue_head(&adapter->init_wait_q);
1230 adapter->is_suspended = false;
1231 adapter->hs_activated = false;
1232 init_waitqueue_head(&adapter->hs_activate_wait_q);
1233 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1234 adapter->cmd_wait_q.status = 0;
1235 adapter->scan_wait_q_woken = false;
1237 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB) {
1238 adapter->rx_work_enabled = true;
1239 pr_notice("rx work enabled, cpus %d\n", num_possible_cpus());
1242 adapter->workqueue =
1243 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1244 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1245 if (!adapter->workqueue)
1248 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1250 if (adapter->rx_work_enabled) {
1251 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1255 if (!adapter->rx_workqueue)
1258 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1261 /* Register the device. Fill up the private data structure with relevant
1262 information from the card. */
1263 if (adapter->if_ops.register_dev(adapter)) {
1264 pr_err("%s: failed to register mwifiex device\n", __func__);
1265 goto err_registerdev;
1268 if (mwifiex_init_hw_fw(adapter)) {
1269 pr_err("%s: firmware init failed\n", __func__);
1276 pr_debug("info: %s: unregister device\n", __func__);
1277 if (adapter->if_ops.unregister_dev)
1278 adapter->if_ops.unregister_dev(adapter);
1279 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1280 pr_debug("info: %s: shutdown mwifiex\n", __func__);
1281 adapter->init_wait_q_woken = false;
1283 if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS)
1284 wait_event_interruptible(adapter->init_wait_q,
1285 adapter->init_wait_q_woken);
1288 adapter->surprise_removed = true;
1289 mwifiex_terminate_workqueue(adapter);
1291 mwifiex_free_adapter(adapter);
1299 EXPORT_SYMBOL_GPL(mwifiex_add_card);
1302 * This function removes the card.
1304 * This function follows the following major steps to remove the device -
1305 * - Stop data traffic
1306 * - Shutdown firmware
1307 * - Remove the logical interfaces
1308 * - Terminate the work queue
1309 * - Unregister the device
1310 * - Free the adapter structure
1312 int mwifiex_remove_card(struct mwifiex_adapter *adapter, struct semaphore *sem)
1314 struct mwifiex_private *priv = NULL;
1317 if (down_interruptible(sem))
1323 /* We can no longer handle interrupts once we start doing the teardown
1325 if (adapter->if_ops.disable_int)
1326 adapter->if_ops.disable_int(adapter);
1328 adapter->surprise_removed = true;
1330 mwifiex_terminate_workqueue(adapter);
1333 for (i = 0; i < adapter->priv_num; i++) {
1334 priv = adapter->priv[i];
1335 if (priv && priv->netdev) {
1336 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
1337 if (netif_carrier_ok(priv->netdev))
1338 netif_carrier_off(priv->netdev);
1342 mwifiex_dbg(adapter, CMD,
1343 "cmd: calling mwifiex_shutdown_drv...\n");
1344 adapter->init_wait_q_woken = false;
1346 if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS)
1347 wait_event_interruptible(adapter->init_wait_q,
1348 adapter->init_wait_q_woken);
1349 mwifiex_dbg(adapter, CMD,
1350 "cmd: mwifiex_shutdown_drv done\n");
1351 if (atomic_read(&adapter->rx_pending) ||
1352 atomic_read(&adapter->tx_pending) ||
1353 atomic_read(&adapter->cmd_pending)) {
1354 mwifiex_dbg(adapter, ERROR,
1355 "rx_pending=%d, tx_pending=%d,\t"
1357 atomic_read(&adapter->rx_pending),
1358 atomic_read(&adapter->tx_pending),
1359 atomic_read(&adapter->cmd_pending));
1362 for (i = 0; i < adapter->priv_num; i++) {
1363 priv = adapter->priv[i];
1370 priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED)
1371 mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
1375 wiphy_unregister(adapter->wiphy);
1376 wiphy_free(adapter->wiphy);
1378 /* Unregister device */
1379 mwifiex_dbg(adapter, INFO,
1380 "info: unregister device\n");
1381 if (adapter->if_ops.unregister_dev)
1382 adapter->if_ops.unregister_dev(adapter);
1383 /* Free adapter structure */
1384 mwifiex_dbg(adapter, INFO,
1385 "info: free adapter\n");
1386 mwifiex_free_adapter(adapter);
1393 EXPORT_SYMBOL_GPL(mwifiex_remove_card);
1396 * This function initializes the module.
1398 * The debug FS is also initialized if configured.
1401 mwifiex_init_module(void)
1403 #ifdef CONFIG_DEBUG_FS
1404 mwifiex_debugfs_init();
1410 * This function cleans up the module.
1412 * The debug FS is removed if available.
1415 mwifiex_cleanup_module(void)
1417 #ifdef CONFIG_DEBUG_FS
1418 mwifiex_debugfs_remove();
1422 module_init(mwifiex_init_module);
1423 module_exit(mwifiex_cleanup_module);
1425 MODULE_AUTHOR("Marvell International Ltd.");
1426 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION);
1427 MODULE_VERSION(VERSION);
1428 MODULE_LICENSE("GPL v2");