2 * Marvell Wireless LAN device driver: HW/FW Initialization
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.
29 * This function adds a BSS priority table to the table list.
31 * The function allocates a new BSS priority table node and adds it to
32 * the end of BSS priority table list, kept in driver memory.
34 static int mwifiex_add_bss_prio_tbl(struct mwifiex_private *priv)
36 struct mwifiex_adapter *adapter = priv->adapter;
37 struct mwifiex_bss_prio_node *bss_prio;
38 struct mwifiex_bss_prio_tbl *tbl = adapter->bss_prio_tbl;
41 bss_prio = kzalloc(sizeof(struct mwifiex_bss_prio_node), GFP_KERNEL);
43 dev_err(adapter->dev, "%s: failed to alloc bss_prio\n",
48 bss_prio->priv = priv;
49 INIT_LIST_HEAD(&bss_prio->list);
50 if (!tbl[priv->bss_priority].bss_prio_cur)
51 tbl[priv->bss_priority].bss_prio_cur = bss_prio;
53 spin_lock_irqsave(&tbl[priv->bss_priority].bss_prio_lock, flags);
54 list_add_tail(&bss_prio->list, &tbl[priv->bss_priority].bss_prio_head);
55 spin_unlock_irqrestore(&tbl[priv->bss_priority].bss_prio_lock, flags);
60 static void scan_delay_timer_fn(unsigned long data)
62 struct mwifiex_private *priv = (struct mwifiex_private *)data;
63 struct mwifiex_adapter *adapter = priv->adapter;
64 struct cmd_ctrl_node *cmd_node, *tmp_node;
67 if (adapter->surprise_removed)
70 if (adapter->scan_delay_cnt == MWIFIEX_MAX_SCAN_DELAY_CNT) {
72 * Abort scan operation by cancelling all pending scan
75 spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
76 list_for_each_entry_safe(cmd_node, tmp_node,
77 &adapter->scan_pending_q, list) {
78 list_del(&cmd_node->list);
79 cmd_node->wait_q_enabled = false;
80 mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
82 spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
84 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
85 adapter->scan_processing = false;
86 adapter->scan_delay_cnt = 0;
87 adapter->empty_tx_q_cnt = 0;
88 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
90 if (priv->user_scan_cfg) {
91 if (priv->scan_request) {
92 dev_dbg(priv->adapter->dev,
93 "info: aborting scan\n");
94 cfg80211_scan_done(priv->scan_request, 1);
95 priv->scan_request = NULL;
97 dev_dbg(priv->adapter->dev,
98 "info: scan already aborted\n");
101 kfree(priv->user_scan_cfg);
102 priv->user_scan_cfg = NULL;
107 if (!atomic_read(&priv->adapter->is_tx_received)) {
108 adapter->empty_tx_q_cnt++;
109 if (adapter->empty_tx_q_cnt == MWIFIEX_MAX_EMPTY_TX_Q_CNT) {
111 * No Tx traffic for 200msec. Get scan command from
112 * scan pending queue and put to cmd pending queue to
113 * resume scan operation
115 adapter->scan_delay_cnt = 0;
116 adapter->empty_tx_q_cnt = 0;
117 spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
118 cmd_node = list_first_entry(&adapter->scan_pending_q,
119 struct cmd_ctrl_node, list);
120 list_del(&cmd_node->list);
121 spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
124 mwifiex_insert_cmd_to_pending_q(adapter, cmd_node,
126 queue_work(adapter->workqueue, &adapter->main_work);
130 adapter->empty_tx_q_cnt = 0;
133 /* Delay scan operation further by 20msec */
134 mod_timer(&priv->scan_delay_timer, jiffies +
135 msecs_to_jiffies(MWIFIEX_SCAN_DELAY_MSEC));
136 adapter->scan_delay_cnt++;
139 if (atomic_read(&priv->adapter->is_tx_received))
140 atomic_set(&priv->adapter->is_tx_received, false);
146 * This function initializes the private structure and sets default
147 * values to the members.
149 * Additionally, it also initializes all the locks and sets up all the
152 static int mwifiex_init_priv(struct mwifiex_private *priv)
156 priv->media_connected = false;
157 memset(priv->curr_addr, 0xff, ETH_ALEN);
159 priv->pkt_tx_ctrl = 0;
160 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
161 priv->data_rate = 0; /* Initially indicate the rate as auto */
162 priv->is_data_rate_auto = true;
163 priv->bcn_avg_factor = DEFAULT_BCN_AVG_FACTOR;
164 priv->data_avg_factor = DEFAULT_DATA_AVG_FACTOR;
166 priv->sec_info.wep_enabled = 0;
167 priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
168 priv->sec_info.encryption_mode = 0;
169 for (i = 0; i < ARRAY_SIZE(priv->wep_key); i++)
170 memset(&priv->wep_key[i], 0, sizeof(struct mwifiex_wep_key));
171 priv->wep_key_curr_index = 0;
172 priv->curr_pkt_filter = HostCmd_ACT_MAC_RX_ON | HostCmd_ACT_MAC_TX_ON |
173 HostCmd_ACT_MAC_ETHERNETII_ENABLE;
175 priv->beacon_period = 100; /* beacon interval */ ;
176 priv->attempted_bss_desc = NULL;
177 memset(&priv->curr_bss_params, 0, sizeof(priv->curr_bss_params));
178 priv->listen_interval = MWIFIEX_DEFAULT_LISTEN_INTERVAL;
180 memset(&priv->prev_ssid, 0, sizeof(priv->prev_ssid));
181 memset(&priv->prev_bssid, 0, sizeof(priv->prev_bssid));
182 memset(&priv->assoc_rsp_buf, 0, sizeof(priv->assoc_rsp_buf));
183 priv->assoc_rsp_size = 0;
184 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
185 priv->atim_window = 0;
186 priv->adhoc_state = ADHOC_IDLE;
187 priv->tx_power_level = 0;
188 priv->max_tx_power_level = 0;
189 priv->min_tx_power_level = 0;
191 priv->rxpd_htinfo = 0;
193 priv->rate_bitmap = 0;
194 priv->data_rssi_last = 0;
195 priv->data_rssi_avg = 0;
196 priv->data_nf_avg = 0;
197 priv->data_nf_last = 0;
198 priv->bcn_rssi_last = 0;
199 priv->bcn_rssi_avg = 0;
200 priv->bcn_nf_avg = 0;
201 priv->bcn_nf_last = 0;
202 memset(&priv->wpa_ie, 0, sizeof(priv->wpa_ie));
203 memset(&priv->aes_key, 0, sizeof(priv->aes_key));
204 priv->wpa_ie_len = 0;
205 priv->wpa_is_gtk_set = false;
207 memset(&priv->assoc_tlv_buf, 0, sizeof(priv->assoc_tlv_buf));
208 priv->assoc_tlv_buf_len = 0;
209 memset(&priv->wps, 0, sizeof(priv->wps));
210 memset(&priv->gen_ie_buf, 0, sizeof(priv->gen_ie_buf));
211 priv->gen_ie_buf_len = 0;
212 memset(priv->vs_ie, 0, sizeof(priv->vs_ie));
214 priv->wmm_required = true;
215 priv->wmm_enabled = false;
216 priv->wmm_qosinfo = 0;
217 priv->curr_bcn_buf = NULL;
218 priv->curr_bcn_size = 0;
220 priv->wps_ie_len = 0;
221 priv->mgmt_rx_freq = 2437;
223 priv->scan_block = false;
225 setup_timer(&priv->scan_delay_timer, scan_delay_timer_fn,
226 (unsigned long)priv);
228 return mwifiex_add_bss_prio_tbl(priv);
232 * This function allocates buffers for members of the adapter
235 * The memory allocated includes scan table, command buffers, and
236 * sleep confirm command buffer. In addition, the queues are
239 static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter)
243 /* Allocate command buffer */
244 ret = mwifiex_alloc_cmd_buffer(adapter);
246 dev_err(adapter->dev, "%s: failed to alloc cmd buffer\n",
252 dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm)
255 if (!adapter->sleep_cfm) {
256 dev_err(adapter->dev, "%s: failed to alloc sleep cfm"
257 " cmd buffer\n", __func__);
260 skb_reserve(adapter->sleep_cfm, INTF_HEADER_LEN);
266 * This function initializes the adapter structure and sets default
267 * values to the members of adapter.
269 * This also initializes the WMM related parameters in the driver private
272 static void mwifiex_init_adapter(struct mwifiex_adapter *adapter)
274 struct mwifiex_opt_sleep_confirm *sleep_cfm_buf = NULL;
276 skb_put(adapter->sleep_cfm, sizeof(struct mwifiex_opt_sleep_confirm));
278 adapter->cmd_sent = false;
280 if (adapter->iface_type == MWIFIEX_PCIE)
281 adapter->data_sent = false;
283 adapter->data_sent = true;
285 adapter->cmd_resp_received = false;
286 adapter->event_received = false;
287 adapter->data_received = false;
289 adapter->surprise_removed = false;
291 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
293 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
294 adapter->ps_state = PS_STATE_AWAKE;
295 adapter->need_to_wakeup = false;
297 adapter->scan_mode = HostCmd_BSS_MODE_ANY;
298 adapter->specific_scan_time = MWIFIEX_SPECIFIC_SCAN_CHAN_TIME;
299 adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME;
300 adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME;
302 adapter->scan_probes = 1;
304 adapter->multiple_dtim = 1;
306 adapter->local_listen_interval = 0; /* default value in firmware
309 adapter->is_deep_sleep = false;
311 adapter->delay_null_pkt = false;
312 adapter->delay_to_ps = 1000;
313 adapter->enhanced_ps_mode = PS_MODE_AUTO;
315 adapter->gen_null_pkt = false; /* Disable NULL Pkg generation by
317 adapter->pps_uapsd_mode = false; /* Disable pps/uapsd mode by
319 adapter->pm_wakeup_card_req = false;
321 adapter->pm_wakeup_fw_try = false;
323 adapter->max_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
324 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
325 adapter->curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
327 adapter->is_hs_configured = false;
328 adapter->hs_cfg.conditions = cpu_to_le32(HOST_SLEEP_CFG_COND_DEF);
329 adapter->hs_cfg.gpio = HOST_SLEEP_CFG_GPIO_DEF;
330 adapter->hs_cfg.gap = HOST_SLEEP_CFG_GAP_DEF;
331 adapter->hs_activated = false;
333 memset(adapter->event_body, 0, sizeof(adapter->event_body));
334 adapter->hw_dot_11n_dev_cap = 0;
335 adapter->hw_dev_mcs_support = 0;
336 adapter->sec_chan_offset = 0;
337 adapter->adhoc_11n_enabled = false;
339 mwifiex_wmm_init(adapter);
341 if (adapter->sleep_cfm) {
342 sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *)
343 adapter->sleep_cfm->data;
344 memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len);
345 sleep_cfm_buf->command =
346 cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH);
347 sleep_cfm_buf->size =
348 cpu_to_le16(adapter->sleep_cfm->len);
349 sleep_cfm_buf->result = 0;
350 sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM);
351 sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED);
353 memset(&adapter->sleep_params, 0, sizeof(adapter->sleep_params));
354 memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period));
355 adapter->tx_lock_flag = false;
356 adapter->null_pkt_interval = 0;
357 adapter->fw_bands = 0;
358 adapter->config_bands = 0;
359 adapter->adhoc_start_band = 0;
360 adapter->scan_channels = NULL;
361 adapter->fw_release_number = 0;
362 adapter->fw_cap_info = 0;
363 memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf));
364 adapter->event_cause = 0;
365 adapter->region_code = 0;
366 adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT;
367 adapter->adhoc_awake_period = 0;
368 memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter));
369 adapter->arp_filter_size = 0;
370 adapter->channel_type = NL80211_CHAN_HT20;
371 adapter->empty_tx_q_cnt = 0;
375 * This function sets trans_start per tx_queue
377 void mwifiex_set_trans_start(struct net_device *dev)
381 for (i = 0; i < dev->num_tx_queues; i++)
382 netdev_get_tx_queue(dev, i)->trans_start = jiffies;
384 dev->trans_start = jiffies;
388 * This function wakes up all queues in net_device
390 void mwifiex_wake_up_net_dev_queue(struct net_device *netdev,
391 struct mwifiex_adapter *adapter)
393 unsigned long dev_queue_flags;
396 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags);
398 for (i = 0; i < netdev->num_tx_queues; i++) {
399 struct netdev_queue *txq = netdev_get_tx_queue(netdev, i);
401 if (netif_tx_queue_stopped(txq))
402 netif_tx_wake_queue(txq);
405 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags);
409 * This function stops all queues in net_device
411 void mwifiex_stop_net_dev_queue(struct net_device *netdev,
412 struct mwifiex_adapter *adapter)
414 unsigned long dev_queue_flags;
417 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags);
419 for (i = 0; i < netdev->num_tx_queues; i++) {
420 struct netdev_queue *txq = netdev_get_tx_queue(netdev, i);
422 if (!netif_tx_queue_stopped(txq))
423 netif_tx_stop_queue(txq);
426 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags);
430 * This function releases the lock variables and frees the locks and
433 static void mwifiex_free_lock_list(struct mwifiex_adapter *adapter)
435 struct mwifiex_private *priv;
439 list_del(&adapter->cmd_free_q);
440 list_del(&adapter->cmd_pending_q);
441 list_del(&adapter->scan_pending_q);
443 for (i = 0; i < adapter->priv_num; i++)
444 list_del(&adapter->bss_prio_tbl[i].bss_prio_head);
446 for (i = 0; i < adapter->priv_num; i++) {
447 if (adapter->priv[i]) {
448 priv = adapter->priv[i];
449 for (j = 0; j < MAX_NUM_TID; ++j)
450 list_del(&priv->wmm.tid_tbl_ptr[j].ra_list);
451 list_del(&priv->tx_ba_stream_tbl_ptr);
452 list_del(&priv->rx_reorder_tbl_ptr);
458 * This function performs cleanup for adapter structure.
460 * The cleanup is done recursively, by canceling all pending
461 * commands, freeing the member buffers previously allocated
462 * (command buffers, scan table buffer, sleep confirm command
463 * buffer), stopping the timers and calling the cleanup routines
464 * for every interface.
467 mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter)
472 pr_err("%s: adapter is NULL\n", __func__);
476 for (i = 0; i < adapter->priv_num; i++) {
477 if (adapter->priv[i])
478 del_timer_sync(&adapter->priv[i]->scan_delay_timer);
481 mwifiex_cancel_all_pending_cmd(adapter);
483 /* Free lock variables */
484 mwifiex_free_lock_list(adapter);
486 /* Free command buffer */
487 dev_dbg(adapter->dev, "info: free cmd buffer\n");
488 mwifiex_free_cmd_buffer(adapter);
490 del_timer(&adapter->cmd_timer);
492 dev_dbg(adapter->dev, "info: free scan table\n");
494 adapter->if_ops.cleanup_if(adapter);
496 if (adapter->sleep_cfm)
497 dev_kfree_skb_any(adapter->sleep_cfm);
501 * This function intializes the lock variables and
504 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter)
506 struct mwifiex_private *priv;
509 spin_lock_init(&adapter->mwifiex_lock);
510 spin_lock_init(&adapter->int_lock);
511 spin_lock_init(&adapter->main_proc_lock);
512 spin_lock_init(&adapter->mwifiex_cmd_lock);
513 spin_lock_init(&adapter->queue_lock);
514 for (i = 0; i < adapter->priv_num; i++) {
515 if (adapter->priv[i]) {
516 priv = adapter->priv[i];
517 spin_lock_init(&priv->rx_pkt_lock);
518 spin_lock_init(&priv->wmm.ra_list_spinlock);
519 spin_lock_init(&priv->curr_bcn_buf_lock);
523 /* Initialize cmd_free_q */
524 INIT_LIST_HEAD(&adapter->cmd_free_q);
525 /* Initialize cmd_pending_q */
526 INIT_LIST_HEAD(&adapter->cmd_pending_q);
527 /* Initialize scan_pending_q */
528 INIT_LIST_HEAD(&adapter->scan_pending_q);
530 spin_lock_init(&adapter->cmd_free_q_lock);
531 spin_lock_init(&adapter->cmd_pending_q_lock);
532 spin_lock_init(&adapter->scan_pending_q_lock);
534 for (i = 0; i < adapter->priv_num; ++i) {
535 INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head);
536 adapter->bss_prio_tbl[i].bss_prio_cur = NULL;
537 spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock);
540 for (i = 0; i < adapter->priv_num; i++) {
541 if (!adapter->priv[i])
543 priv = adapter->priv[i];
544 for (j = 0; j < MAX_NUM_TID; ++j) {
545 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list);
546 spin_lock_init(&priv->wmm.tid_tbl_ptr[j].tid_tbl_lock);
548 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr);
549 INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr);
551 spin_lock_init(&priv->tx_ba_stream_tbl_lock);
552 spin_lock_init(&priv->rx_reorder_tbl_lock);
559 * This function initializes the firmware.
561 * The following operations are performed sequentially -
562 * - Allocate adapter structure
563 * - Initialize the adapter structure
564 * - Initialize the private structure
565 * - Add BSS priority tables to the adapter structure
566 * - For each interface, send the init commands to firmware
567 * - Send the first command in command pending queue, if available
569 int mwifiex_init_fw(struct mwifiex_adapter *adapter)
572 struct mwifiex_private *priv;
573 u8 i, first_sta = true;
574 int is_cmd_pend_q_empty;
577 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
579 /* Allocate memory for member of adapter structure */
580 ret = mwifiex_allocate_adapter(adapter);
584 /* Initialize adapter structure */
585 mwifiex_init_adapter(adapter);
587 for (i = 0; i < adapter->priv_num; i++) {
588 if (adapter->priv[i]) {
589 priv = adapter->priv[i];
591 /* Initialize private structure */
592 ret = mwifiex_init_priv(priv);
597 for (i = 0; i < adapter->priv_num; i++) {
598 if (adapter->priv[i]) {
599 ret = mwifiex_sta_init_cmd(adapter->priv[i], first_sta);
607 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
608 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
609 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
610 if (!is_cmd_pend_q_empty) {
611 /* Send the first command in queue and return */
612 if (mwifiex_main_process(adapter) != -1)
615 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
622 * This function deletes the BSS priority tables.
624 * The function traverses through all the allocated BSS priority nodes
625 * in every BSS priority table and frees them.
627 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv)
630 struct mwifiex_adapter *adapter = priv->adapter;
631 struct mwifiex_bss_prio_node *bssprio_node, *tmp_node, **cur;
632 struct list_head *head;
633 spinlock_t *lock; /* bss priority lock */
636 for (i = 0; i < adapter->priv_num; ++i) {
637 head = &adapter->bss_prio_tbl[i].bss_prio_head;
638 cur = &adapter->bss_prio_tbl[i].bss_prio_cur;
639 lock = &adapter->bss_prio_tbl[i].bss_prio_lock;
640 dev_dbg(adapter->dev, "info: delete BSS priority table,"
641 " bss_type = %d, bss_num = %d, i = %d,"
642 " head = %p, cur = %p\n",
643 priv->bss_type, priv->bss_num, i, head, *cur);
645 spin_lock_irqsave(lock, flags);
646 if (list_empty(head)) {
647 spin_unlock_irqrestore(lock, flags);
650 bssprio_node = list_first_entry(head,
651 struct mwifiex_bss_prio_node, list);
652 spin_unlock_irqrestore(lock, flags);
654 list_for_each_entry_safe(bssprio_node, tmp_node, head,
656 if (bssprio_node->priv == priv) {
657 dev_dbg(adapter->dev, "info: Delete "
658 "node %p, next = %p\n",
659 bssprio_node, tmp_node);
660 spin_lock_irqsave(lock, flags);
661 list_del(&bssprio_node->list);
662 spin_unlock_irqrestore(lock, flags);
666 *cur = (struct mwifiex_bss_prio_node *)head;
672 * This function is used to shutdown the driver.
674 * The following operations are performed sequentially -
675 * - Check if already shut down
676 * - Make sure the main process has stopped
677 * - Clean up the Tx and Rx queues
678 * - Delete BSS priority tables
680 * - Notify completion
683 mwifiex_shutdown_drv(struct mwifiex_adapter *adapter)
685 int ret = -EINPROGRESS;
686 struct mwifiex_private *priv;
690 /* mwifiex already shutdown */
691 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
694 adapter->hw_status = MWIFIEX_HW_STATUS_CLOSING;
695 /* wait for mwifiex_process to complete */
696 if (adapter->mwifiex_processing) {
697 dev_warn(adapter->dev, "main process is still running\n");
701 /* shut down mwifiex */
702 dev_dbg(adapter->dev, "info: shutdown mwifiex...\n");
704 /* Clean up Tx/Rx queues and delete BSS priority table */
705 for (i = 0; i < adapter->priv_num; i++) {
706 if (adapter->priv[i]) {
707 priv = adapter->priv[i];
709 mwifiex_clean_txrx(priv);
710 mwifiex_delete_bss_prio_tbl(priv);
714 spin_lock_irqsave(&adapter->mwifiex_lock, flags);
716 mwifiex_adapter_cleanup(adapter);
718 spin_unlock_irqrestore(&adapter->mwifiex_lock, flags);
720 /* Notify completion */
721 ret = mwifiex_shutdown_fw_complete(adapter);
727 * This function downloads the firmware to the card.
729 * The actual download is preceded by two sanity checks -
730 * - Check if firmware is already running
731 * - Check if the interface is the winner to download the firmware
733 * ...and followed by another -
734 * - Check if the firmware is downloaded successfully
736 * After download is successfully completed, the host interrupts are enabled.
738 int mwifiex_dnld_fw(struct mwifiex_adapter *adapter,
739 struct mwifiex_fw_image *pmfw)
746 /* Check if firmware is already running */
747 ret = adapter->if_ops.check_fw_status(adapter, poll_num);
749 dev_notice(adapter->dev,
750 "WLAN FW already running! Skip FW download\n");
753 poll_num = MAX_FIRMWARE_POLL_TRIES;
755 /* Check if we are the winner for downloading FW */
756 if (!adapter->winner) {
757 dev_notice(adapter->dev,
758 "Other intf already running! Skip FW download\n");
759 poll_num = MAX_MULTI_INTERFACE_POLL_TRIES;
763 /* Download firmware with helper */
764 ret = adapter->if_ops.prog_fw(adapter, pmfw);
766 dev_err(adapter->dev, "prog_fw failed ret=%#x\n", ret);
772 /* Check if the firmware is downloaded successfully or not */
773 ret = adapter->if_ops.check_fw_status(adapter, poll_num);
775 dev_err(adapter->dev, "FW failed to be active in time\n");
779 /* re-enable host interrupt for mwifiex after fw dnld is successful */
780 adapter->if_ops.enable_int(adapter);