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->scan_delay_cnt == MWIFIEX_MAX_SCAN_DELAY_CNT) {
69 * Abort scan operation by cancelling all pending scan
72 spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
73 list_for_each_entry_safe(cmd_node, tmp_node,
74 &adapter->scan_pending_q, list) {
75 list_del(&cmd_node->list);
76 mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
78 spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
80 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
81 adapter->scan_processing = false;
82 adapter->scan_delay_cnt = 0;
83 adapter->empty_tx_q_cnt = 0;
84 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
86 if (priv->user_scan_cfg) {
87 dev_dbg(priv->adapter->dev,
88 "info: %s: scan aborted\n", __func__);
89 cfg80211_scan_done(priv->scan_request, 1);
90 priv->scan_request = NULL;
91 kfree(priv->user_scan_cfg);
92 priv->user_scan_cfg = NULL;
95 if (priv->scan_pending_on_block) {
96 priv->scan_pending_on_block = false;
102 if (!atomic_read(&priv->adapter->is_tx_received)) {
103 adapter->empty_tx_q_cnt++;
104 if (adapter->empty_tx_q_cnt == MWIFIEX_MAX_EMPTY_TX_Q_CNT) {
106 * No Tx traffic for 200msec. Get scan command from
107 * scan pending queue and put to cmd pending queue to
108 * resume scan operation
110 adapter->scan_delay_cnt = 0;
111 adapter->empty_tx_q_cnt = 0;
112 spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
113 cmd_node = list_first_entry(&adapter->scan_pending_q,
114 struct cmd_ctrl_node, list);
115 list_del(&cmd_node->list);
116 spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
119 mwifiex_insert_cmd_to_pending_q(adapter, cmd_node,
121 queue_work(adapter->workqueue, &adapter->main_work);
125 adapter->empty_tx_q_cnt = 0;
128 /* Delay scan operation further by 20msec */
129 mod_timer(&priv->scan_delay_timer, jiffies +
130 msecs_to_jiffies(MWIFIEX_SCAN_DELAY_MSEC));
131 adapter->scan_delay_cnt++;
134 if (atomic_read(&priv->adapter->is_tx_received))
135 atomic_set(&priv->adapter->is_tx_received, false);
141 * This function initializes the private structure and sets default
142 * values to the members.
144 * Additionally, it also initializes all the locks and sets up all the
147 int mwifiex_init_priv(struct mwifiex_private *priv)
151 priv->media_connected = false;
152 memset(priv->curr_addr, 0xff, ETH_ALEN);
154 priv->pkt_tx_ctrl = 0;
155 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
156 priv->data_rate = 0; /* Initially indicate the rate as auto */
157 priv->is_data_rate_auto = true;
158 priv->bcn_avg_factor = DEFAULT_BCN_AVG_FACTOR;
159 priv->data_avg_factor = DEFAULT_DATA_AVG_FACTOR;
161 priv->sec_info.wep_enabled = 0;
162 priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
163 priv->sec_info.encryption_mode = 0;
164 for (i = 0; i < ARRAY_SIZE(priv->wep_key); i++)
165 memset(&priv->wep_key[i], 0, sizeof(struct mwifiex_wep_key));
166 priv->wep_key_curr_index = 0;
167 priv->curr_pkt_filter = HostCmd_ACT_MAC_RX_ON | HostCmd_ACT_MAC_TX_ON |
168 HostCmd_ACT_MAC_ETHERNETII_ENABLE;
170 priv->beacon_period = 100; /* beacon interval */ ;
171 priv->attempted_bss_desc = NULL;
172 memset(&priv->curr_bss_params, 0, sizeof(priv->curr_bss_params));
173 priv->listen_interval = MWIFIEX_DEFAULT_LISTEN_INTERVAL;
175 memset(&priv->prev_ssid, 0, sizeof(priv->prev_ssid));
176 memset(&priv->prev_bssid, 0, sizeof(priv->prev_bssid));
177 memset(&priv->assoc_rsp_buf, 0, sizeof(priv->assoc_rsp_buf));
178 priv->assoc_rsp_size = 0;
179 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
180 priv->atim_window = 0;
181 priv->adhoc_state = ADHOC_IDLE;
182 priv->tx_power_level = 0;
183 priv->max_tx_power_level = 0;
184 priv->min_tx_power_level = 0;
186 priv->rxpd_htinfo = 0;
188 priv->rate_bitmap = 0;
189 priv->data_rssi_last = 0;
190 priv->data_rssi_avg = 0;
191 priv->data_nf_avg = 0;
192 priv->data_nf_last = 0;
193 priv->bcn_rssi_last = 0;
194 priv->bcn_rssi_avg = 0;
195 priv->bcn_nf_avg = 0;
196 priv->bcn_nf_last = 0;
197 memset(&priv->wpa_ie, 0, sizeof(priv->wpa_ie));
198 memset(&priv->aes_key, 0, sizeof(priv->aes_key));
199 priv->wpa_ie_len = 0;
200 priv->wpa_is_gtk_set = false;
202 memset(&priv->assoc_tlv_buf, 0, sizeof(priv->assoc_tlv_buf));
203 priv->assoc_tlv_buf_len = 0;
204 memset(&priv->wps, 0, sizeof(priv->wps));
205 memset(&priv->gen_ie_buf, 0, sizeof(priv->gen_ie_buf));
206 priv->gen_ie_buf_len = 0;
207 memset(priv->vs_ie, 0, sizeof(priv->vs_ie));
209 priv->wmm_required = true;
210 priv->wmm_enabled = false;
211 priv->wmm_qosinfo = 0;
212 priv->curr_bcn_buf = NULL;
213 priv->curr_bcn_size = 0;
215 priv->wps_ie_len = 0;
216 priv->ap_11n_enabled = 0;
217 memset(&priv->roc_cfg, 0, sizeof(priv->roc_cfg));
219 priv->scan_block = false;
221 setup_timer(&priv->scan_delay_timer, scan_delay_timer_fn,
222 (unsigned long)priv);
224 return mwifiex_add_bss_prio_tbl(priv);
228 * This function allocates buffers for members of the adapter
231 * The memory allocated includes scan table, command buffers, and
232 * sleep confirm command buffer. In addition, the queues are
235 static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter)
239 /* Allocate command buffer */
240 ret = mwifiex_alloc_cmd_buffer(adapter);
242 dev_err(adapter->dev, "%s: failed to alloc cmd buffer\n",
248 dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm)
251 if (!adapter->sleep_cfm) {
252 dev_err(adapter->dev, "%s: failed to alloc sleep cfm"
253 " cmd buffer\n", __func__);
256 skb_reserve(adapter->sleep_cfm, INTF_HEADER_LEN);
262 * This function initializes the adapter structure and sets default
263 * values to the members of adapter.
265 * This also initializes the WMM related parameters in the driver private
268 static void mwifiex_init_adapter(struct mwifiex_adapter *adapter)
270 struct mwifiex_opt_sleep_confirm *sleep_cfm_buf = NULL;
272 skb_put(adapter->sleep_cfm, sizeof(struct mwifiex_opt_sleep_confirm));
274 adapter->cmd_sent = false;
276 if (adapter->iface_type == MWIFIEX_SDIO)
277 adapter->data_sent = true;
279 adapter->data_sent = false;
281 adapter->cmd_resp_received = false;
282 adapter->event_received = false;
283 adapter->data_received = false;
285 adapter->surprise_removed = false;
287 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
289 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
290 adapter->ps_state = PS_STATE_AWAKE;
291 adapter->need_to_wakeup = false;
293 adapter->scan_mode = HostCmd_BSS_MODE_ANY;
294 adapter->specific_scan_time = MWIFIEX_SPECIFIC_SCAN_CHAN_TIME;
295 adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME;
296 adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME;
298 adapter->scan_probes = 1;
300 adapter->multiple_dtim = 1;
302 adapter->local_listen_interval = 0; /* default value in firmware
305 adapter->is_deep_sleep = false;
307 adapter->delay_null_pkt = false;
308 adapter->delay_to_ps = 1000;
309 adapter->enhanced_ps_mode = PS_MODE_AUTO;
311 adapter->gen_null_pkt = false; /* Disable NULL Pkg generation by
313 adapter->pps_uapsd_mode = false; /* Disable pps/uapsd mode by
315 adapter->pm_wakeup_card_req = false;
317 adapter->pm_wakeup_fw_try = false;
319 adapter->max_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
320 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
321 adapter->curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
323 adapter->is_hs_configured = false;
324 adapter->hs_cfg.conditions = cpu_to_le32(HOST_SLEEP_CFG_COND_DEF);
325 adapter->hs_cfg.gpio = HOST_SLEEP_CFG_GPIO_DEF;
326 adapter->hs_cfg.gap = HOST_SLEEP_CFG_GAP_DEF;
327 adapter->hs_activated = false;
329 memset(adapter->event_body, 0, sizeof(adapter->event_body));
330 adapter->hw_dot_11n_dev_cap = 0;
331 adapter->hw_dev_mcs_support = 0;
332 adapter->sec_chan_offset = 0;
333 adapter->adhoc_11n_enabled = false;
335 mwifiex_wmm_init(adapter);
337 if (adapter->sleep_cfm) {
338 sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *)
339 adapter->sleep_cfm->data;
340 memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len);
341 sleep_cfm_buf->command =
342 cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH);
343 sleep_cfm_buf->size =
344 cpu_to_le16(adapter->sleep_cfm->len);
345 sleep_cfm_buf->result = 0;
346 sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM);
347 sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED);
349 memset(&adapter->sleep_params, 0, sizeof(adapter->sleep_params));
350 memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period));
351 adapter->tx_lock_flag = false;
352 adapter->null_pkt_interval = 0;
353 adapter->fw_bands = 0;
354 adapter->config_bands = 0;
355 adapter->adhoc_start_band = 0;
356 adapter->scan_channels = NULL;
357 adapter->fw_release_number = 0;
358 adapter->fw_cap_info = 0;
359 memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf));
360 adapter->event_cause = 0;
361 adapter->region_code = 0;
362 adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT;
363 adapter->adhoc_awake_period = 0;
364 memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter));
365 adapter->arp_filter_size = 0;
366 adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX;
367 adapter->empty_tx_q_cnt = 0;
371 * This function sets trans_start per tx_queue
373 void mwifiex_set_trans_start(struct net_device *dev)
377 for (i = 0; i < dev->num_tx_queues; i++)
378 netdev_get_tx_queue(dev, i)->trans_start = jiffies;
380 dev->trans_start = jiffies;
384 * This function wakes up all queues in net_device
386 void mwifiex_wake_up_net_dev_queue(struct net_device *netdev,
387 struct mwifiex_adapter *adapter)
389 unsigned long dev_queue_flags;
391 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags);
392 netif_tx_wake_all_queues(netdev);
393 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags);
397 * This function stops all queues in net_device
399 void mwifiex_stop_net_dev_queue(struct net_device *netdev,
400 struct mwifiex_adapter *adapter)
402 unsigned long dev_queue_flags;
404 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags);
405 netif_tx_stop_all_queues(netdev);
406 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags);
410 * This function releases the lock variables and frees the locks and
413 static void mwifiex_free_lock_list(struct mwifiex_adapter *adapter)
415 struct mwifiex_private *priv;
419 list_del(&adapter->cmd_free_q);
420 list_del(&adapter->cmd_pending_q);
421 list_del(&adapter->scan_pending_q);
423 for (i = 0; i < adapter->priv_num; i++)
424 list_del(&adapter->bss_prio_tbl[i].bss_prio_head);
426 for (i = 0; i < adapter->priv_num; i++) {
427 if (adapter->priv[i]) {
428 priv = adapter->priv[i];
429 for (j = 0; j < MAX_NUM_TID; ++j)
430 list_del(&priv->wmm.tid_tbl_ptr[j].ra_list);
431 list_del(&priv->tx_ba_stream_tbl_ptr);
432 list_del(&priv->rx_reorder_tbl_ptr);
433 list_del(&priv->sta_list);
439 * This function frees the adapter structure.
441 * The freeing operation is done recursively, by canceling all
442 * pending commands, freeing the member buffers previously
443 * allocated (command buffers, scan table buffer, sleep confirm
444 * command buffer), stopping the timers and calling the cleanup
445 * routines for every interface, before the actual adapter
446 * structure is freed.
449 mwifiex_free_adapter(struct mwifiex_adapter *adapter)
452 pr_err("%s: adapter is NULL\n", __func__);
456 mwifiex_cancel_all_pending_cmd(adapter);
458 /* Free lock variables */
459 mwifiex_free_lock_list(adapter);
461 /* Free command buffer */
462 dev_dbg(adapter->dev, "info: free cmd buffer\n");
463 mwifiex_free_cmd_buffer(adapter);
465 del_timer(&adapter->cmd_timer);
467 dev_dbg(adapter->dev, "info: free scan table\n");
469 if (adapter->if_ops.cleanup_if)
470 adapter->if_ops.cleanup_if(adapter);
472 if (adapter->sleep_cfm)
473 dev_kfree_skb_any(adapter->sleep_cfm);
477 * This function intializes the lock variables and
480 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter)
482 struct mwifiex_private *priv;
485 spin_lock_init(&adapter->mwifiex_lock);
486 spin_lock_init(&adapter->int_lock);
487 spin_lock_init(&adapter->main_proc_lock);
488 spin_lock_init(&adapter->mwifiex_cmd_lock);
489 spin_lock_init(&adapter->queue_lock);
490 for (i = 0; i < adapter->priv_num; i++) {
491 if (adapter->priv[i]) {
492 priv = adapter->priv[i];
493 spin_lock_init(&priv->rx_pkt_lock);
494 spin_lock_init(&priv->wmm.ra_list_spinlock);
495 spin_lock_init(&priv->curr_bcn_buf_lock);
496 spin_lock_init(&priv->sta_list_spinlock);
500 /* Initialize cmd_free_q */
501 INIT_LIST_HEAD(&adapter->cmd_free_q);
502 /* Initialize cmd_pending_q */
503 INIT_LIST_HEAD(&adapter->cmd_pending_q);
504 /* Initialize scan_pending_q */
505 INIT_LIST_HEAD(&adapter->scan_pending_q);
507 spin_lock_init(&adapter->cmd_free_q_lock);
508 spin_lock_init(&adapter->cmd_pending_q_lock);
509 spin_lock_init(&adapter->scan_pending_q_lock);
511 skb_queue_head_init(&adapter->usb_rx_data_q);
513 for (i = 0; i < adapter->priv_num; ++i) {
514 INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head);
515 adapter->bss_prio_tbl[i].bss_prio_cur = NULL;
516 spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock);
519 for (i = 0; i < adapter->priv_num; i++) {
520 if (!adapter->priv[i])
522 priv = adapter->priv[i];
523 for (j = 0; j < MAX_NUM_TID; ++j) {
524 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list);
525 spin_lock_init(&priv->wmm.tid_tbl_ptr[j].tid_tbl_lock);
527 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr);
528 INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr);
529 INIT_LIST_HEAD(&priv->sta_list);
531 spin_lock_init(&priv->tx_ba_stream_tbl_lock);
532 spin_lock_init(&priv->rx_reorder_tbl_lock);
539 * This function initializes the firmware.
541 * The following operations are performed sequentially -
542 * - Allocate adapter structure
543 * - Initialize the adapter structure
544 * - Initialize the private structure
545 * - Add BSS priority tables to the adapter structure
546 * - For each interface, send the init commands to firmware
547 * - Send the first command in command pending queue, if available
549 int mwifiex_init_fw(struct mwifiex_adapter *adapter)
552 struct mwifiex_private *priv;
553 u8 i, first_sta = true;
554 int is_cmd_pend_q_empty;
557 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
559 /* Allocate memory for member of adapter structure */
560 ret = mwifiex_allocate_adapter(adapter);
564 /* Initialize adapter structure */
565 mwifiex_init_adapter(adapter);
567 for (i = 0; i < adapter->priv_num; i++) {
568 if (adapter->priv[i]) {
569 priv = adapter->priv[i];
571 /* Initialize private structure */
572 ret = mwifiex_init_priv(priv);
577 for (i = 0; i < adapter->priv_num; i++) {
578 if (adapter->priv[i]) {
579 ret = mwifiex_sta_init_cmd(adapter->priv[i], first_sta);
587 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
588 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
589 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
590 if (!is_cmd_pend_q_empty) {
591 /* Send the first command in queue and return */
592 if (mwifiex_main_process(adapter) != -1)
595 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
602 * This function deletes the BSS priority tables.
604 * The function traverses through all the allocated BSS priority nodes
605 * in every BSS priority table and frees them.
607 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv)
610 struct mwifiex_adapter *adapter = priv->adapter;
611 struct mwifiex_bss_prio_node *bssprio_node, *tmp_node, **cur;
612 struct list_head *head;
613 spinlock_t *lock; /* bss priority lock */
616 for (i = 0; i < adapter->priv_num; ++i) {
617 head = &adapter->bss_prio_tbl[i].bss_prio_head;
618 cur = &adapter->bss_prio_tbl[i].bss_prio_cur;
619 lock = &adapter->bss_prio_tbl[i].bss_prio_lock;
620 dev_dbg(adapter->dev, "info: delete BSS priority table,"
621 " bss_type = %d, bss_num = %d, i = %d,"
622 " head = %p, cur = %p\n",
623 priv->bss_type, priv->bss_num, i, head, *cur);
625 spin_lock_irqsave(lock, flags);
626 if (list_empty(head)) {
627 spin_unlock_irqrestore(lock, flags);
630 bssprio_node = list_first_entry(head,
631 struct mwifiex_bss_prio_node, list);
632 spin_unlock_irqrestore(lock, flags);
634 list_for_each_entry_safe(bssprio_node, tmp_node, head,
636 if (bssprio_node->priv == priv) {
637 dev_dbg(adapter->dev, "info: Delete "
638 "node %p, next = %p\n",
639 bssprio_node, tmp_node);
640 spin_lock_irqsave(lock, flags);
641 list_del(&bssprio_node->list);
642 spin_unlock_irqrestore(lock, flags);
646 *cur = (struct mwifiex_bss_prio_node *)head;
652 * This function frees the private structure, including cleans
653 * up the TX and RX queues and frees the BSS priority tables.
655 void mwifiex_free_priv(struct mwifiex_private *priv)
657 mwifiex_clean_txrx(priv);
658 mwifiex_delete_bss_prio_tbl(priv);
659 mwifiex_free_curr_bcn(priv);
663 * This function is used to shutdown the driver.
665 * The following operations are performed sequentially -
666 * - Check if already shut down
667 * - Make sure the main process has stopped
668 * - Clean up the Tx and Rx queues
669 * - Delete BSS priority tables
671 * - Notify completion
674 mwifiex_shutdown_drv(struct mwifiex_adapter *adapter)
676 int ret = -EINPROGRESS;
677 struct mwifiex_private *priv;
682 /* mwifiex already shutdown */
683 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
686 adapter->hw_status = MWIFIEX_HW_STATUS_CLOSING;
687 /* wait for mwifiex_process to complete */
688 if (adapter->mwifiex_processing) {
689 dev_warn(adapter->dev, "main process is still running\n");
693 /* shut down mwifiex */
694 dev_dbg(adapter->dev, "info: shutdown mwifiex...\n");
696 /* Clean up Tx/Rx queues and delete BSS priority table */
697 for (i = 0; i < adapter->priv_num; i++) {
698 if (adapter->priv[i]) {
699 priv = adapter->priv[i];
701 mwifiex_clean_txrx(priv);
702 mwifiex_delete_bss_prio_tbl(priv);
706 spin_lock_irqsave(&adapter->mwifiex_lock, flags);
708 if (adapter->if_ops.data_complete) {
709 while ((skb = skb_dequeue(&adapter->usb_rx_data_q))) {
710 struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb);
712 priv = adapter->priv[rx_info->bss_num];
714 priv->stats.rx_dropped++;
716 adapter->if_ops.data_complete(adapter, skb);
720 /* Free adapter structure */
721 mwifiex_free_adapter(adapter);
723 spin_unlock_irqrestore(&adapter->mwifiex_lock, flags);
725 /* Notify completion */
726 ret = mwifiex_shutdown_fw_complete(adapter);
732 * This function downloads the firmware to the card.
734 * The actual download is preceded by two sanity checks -
735 * - Check if firmware is already running
736 * - Check if the interface is the winner to download the firmware
738 * ...and followed by another -
739 * - Check if the firmware is downloaded successfully
741 * After download is successfully completed, the host interrupts are enabled.
743 int mwifiex_dnld_fw(struct mwifiex_adapter *adapter,
744 struct mwifiex_fw_image *pmfw)
749 if (adapter->if_ops.check_fw_status) {
752 /* check if firmware is already running */
753 ret = adapter->if_ops.check_fw_status(adapter, poll_num);
755 dev_notice(adapter->dev,
756 "WLAN FW already running! Skip FW dnld\n");
760 poll_num = MAX_FIRMWARE_POLL_TRIES;
762 /* check if we are the winner for downloading FW */
763 if (!adapter->winner) {
764 dev_notice(adapter->dev,
765 "FW already running! Skip FW dnld\n");
766 poll_num = MAX_MULTI_INTERFACE_POLL_TRIES;
772 /* Download firmware with helper */
773 ret = adapter->if_ops.prog_fw(adapter, pmfw);
775 dev_err(adapter->dev, "prog_fw failed ret=%#x\n", ret);
781 /* Check if the firmware is downloaded successfully or not */
782 ret = adapter->if_ops.check_fw_status(adapter, poll_num);
784 dev_err(adapter->dev, "FW failed to be active in time\n");
788 /* re-enable host interrupt for mwifiex after fw dnld is successful */
789 if (adapter->if_ops.enable_int)
790 adapter->if_ops.enable_int(adapter);