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);
45 bss_prio->priv = priv;
46 INIT_LIST_HEAD(&bss_prio->list);
47 if (!tbl[priv->bss_priority].bss_prio_cur)
48 tbl[priv->bss_priority].bss_prio_cur = bss_prio;
50 spin_lock_irqsave(&tbl[priv->bss_priority].bss_prio_lock, flags);
51 list_add_tail(&bss_prio->list, &tbl[priv->bss_priority].bss_prio_head);
52 spin_unlock_irqrestore(&tbl[priv->bss_priority].bss_prio_lock, flags);
57 static void scan_delay_timer_fn(unsigned long data)
59 struct mwifiex_private *priv = (struct mwifiex_private *)data;
60 struct mwifiex_adapter *adapter = priv->adapter;
61 struct cmd_ctrl_node *cmd_node, *tmp_node;
64 if (adapter->scan_delay_cnt == MWIFIEX_MAX_SCAN_DELAY_CNT) {
66 * Abort scan operation by cancelling all pending scan
69 spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
70 list_for_each_entry_safe(cmd_node, tmp_node,
71 &adapter->scan_pending_q, list) {
72 list_del(&cmd_node->list);
73 mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
75 spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
77 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
78 adapter->scan_processing = false;
79 adapter->scan_delay_cnt = 0;
80 adapter->empty_tx_q_cnt = 0;
81 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
83 if (priv->user_scan_cfg) {
84 if (priv->scan_request) {
85 dev_dbg(priv->adapter->dev,
86 "info: aborting scan\n");
87 cfg80211_scan_done(priv->scan_request, 1);
88 priv->scan_request = NULL;
90 dev_dbg(priv->adapter->dev,
91 "info: scan already aborted\n");
94 kfree(priv->user_scan_cfg);
95 priv->user_scan_cfg = NULL;
100 if (!atomic_read(&priv->adapter->is_tx_received)) {
101 adapter->empty_tx_q_cnt++;
102 if (adapter->empty_tx_q_cnt == MWIFIEX_MAX_EMPTY_TX_Q_CNT) {
104 * No Tx traffic for 200msec. Get scan command from
105 * scan pending queue and put to cmd pending queue to
106 * resume scan operation
108 adapter->scan_delay_cnt = 0;
109 adapter->empty_tx_q_cnt = 0;
110 spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
111 cmd_node = list_first_entry(&adapter->scan_pending_q,
112 struct cmd_ctrl_node, list);
113 list_del(&cmd_node->list);
114 spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
117 mwifiex_insert_cmd_to_pending_q(adapter, cmd_node,
119 queue_work(adapter->workqueue, &adapter->main_work);
123 adapter->empty_tx_q_cnt = 0;
126 /* Delay scan operation further by 20msec */
127 mod_timer(&priv->scan_delay_timer, jiffies +
128 msecs_to_jiffies(MWIFIEX_SCAN_DELAY_MSEC));
129 adapter->scan_delay_cnt++;
132 if (atomic_read(&priv->adapter->is_tx_received))
133 atomic_set(&priv->adapter->is_tx_received, false);
139 * This function initializes the private structure and sets default
140 * values to the members.
142 * Additionally, it also initializes all the locks and sets up all the
145 int mwifiex_init_priv(struct mwifiex_private *priv)
149 priv->media_connected = false;
150 memset(priv->curr_addr, 0xff, ETH_ALEN);
152 priv->pkt_tx_ctrl = 0;
153 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
154 priv->data_rate = 0; /* Initially indicate the rate as auto */
155 priv->is_data_rate_auto = true;
156 priv->bcn_avg_factor = DEFAULT_BCN_AVG_FACTOR;
157 priv->data_avg_factor = DEFAULT_DATA_AVG_FACTOR;
159 priv->sec_info.wep_enabled = 0;
160 priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
161 priv->sec_info.encryption_mode = 0;
162 for (i = 0; i < ARRAY_SIZE(priv->wep_key); i++)
163 memset(&priv->wep_key[i], 0, sizeof(struct mwifiex_wep_key));
164 priv->wep_key_curr_index = 0;
165 priv->curr_pkt_filter = HostCmd_ACT_MAC_RX_ON | HostCmd_ACT_MAC_TX_ON |
166 HostCmd_ACT_MAC_ETHERNETII_ENABLE;
168 priv->beacon_period = 100; /* beacon interval */ ;
169 priv->attempted_bss_desc = NULL;
170 memset(&priv->curr_bss_params, 0, sizeof(priv->curr_bss_params));
171 priv->listen_interval = MWIFIEX_DEFAULT_LISTEN_INTERVAL;
173 memset(&priv->prev_ssid, 0, sizeof(priv->prev_ssid));
174 memset(&priv->prev_bssid, 0, sizeof(priv->prev_bssid));
175 memset(&priv->assoc_rsp_buf, 0, sizeof(priv->assoc_rsp_buf));
176 priv->assoc_rsp_size = 0;
177 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
178 priv->atim_window = 0;
179 priv->adhoc_state = ADHOC_IDLE;
180 priv->tx_power_level = 0;
181 priv->max_tx_power_level = 0;
182 priv->min_tx_power_level = 0;
184 priv->rxpd_htinfo = 0;
186 priv->rate_bitmap = 0;
187 priv->data_rssi_last = 0;
188 priv->data_rssi_avg = 0;
189 priv->data_nf_avg = 0;
190 priv->data_nf_last = 0;
191 priv->bcn_rssi_last = 0;
192 priv->bcn_rssi_avg = 0;
193 priv->bcn_nf_avg = 0;
194 priv->bcn_nf_last = 0;
195 memset(&priv->wpa_ie, 0, sizeof(priv->wpa_ie));
196 memset(&priv->aes_key, 0, sizeof(priv->aes_key));
197 priv->wpa_ie_len = 0;
198 priv->wpa_is_gtk_set = false;
200 memset(&priv->assoc_tlv_buf, 0, sizeof(priv->assoc_tlv_buf));
201 priv->assoc_tlv_buf_len = 0;
202 memset(&priv->wps, 0, sizeof(priv->wps));
203 memset(&priv->gen_ie_buf, 0, sizeof(priv->gen_ie_buf));
204 priv->gen_ie_buf_len = 0;
205 memset(priv->vs_ie, 0, sizeof(priv->vs_ie));
207 priv->wmm_required = true;
208 priv->wmm_enabled = false;
209 priv->wmm_qosinfo = 0;
210 priv->curr_bcn_buf = NULL;
211 priv->curr_bcn_size = 0;
213 priv->wps_ie_len = 0;
214 priv->ap_11n_enabled = 0;
215 memset(&priv->roc_cfg, 0, sizeof(priv->roc_cfg));
217 priv->scan_block = false;
219 setup_timer(&priv->scan_delay_timer, scan_delay_timer_fn,
220 (unsigned long)priv);
222 return mwifiex_add_bss_prio_tbl(priv);
226 * This function allocates buffers for members of the adapter
229 * The memory allocated includes scan table, command buffers, and
230 * sleep confirm command buffer. In addition, the queues are
233 static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter)
237 /* Allocate command buffer */
238 ret = mwifiex_alloc_cmd_buffer(adapter);
240 dev_err(adapter->dev, "%s: failed to alloc cmd buffer\n",
246 dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm)
249 if (!adapter->sleep_cfm) {
250 dev_err(adapter->dev, "%s: failed to alloc sleep cfm"
251 " cmd buffer\n", __func__);
254 skb_reserve(adapter->sleep_cfm, INTF_HEADER_LEN);
260 * This function initializes the adapter structure and sets default
261 * values to the members of adapter.
263 * This also initializes the WMM related parameters in the driver private
266 static void mwifiex_init_adapter(struct mwifiex_adapter *adapter)
268 struct mwifiex_opt_sleep_confirm *sleep_cfm_buf = NULL;
270 skb_put(adapter->sleep_cfm, sizeof(struct mwifiex_opt_sleep_confirm));
272 adapter->cmd_sent = false;
274 if (adapter->iface_type == MWIFIEX_SDIO)
275 adapter->data_sent = true;
277 adapter->data_sent = false;
279 adapter->cmd_resp_received = false;
280 adapter->event_received = false;
281 adapter->data_received = false;
283 adapter->surprise_removed = false;
285 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
287 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
288 adapter->ps_state = PS_STATE_AWAKE;
289 adapter->need_to_wakeup = false;
291 adapter->scan_mode = HostCmd_BSS_MODE_ANY;
292 adapter->specific_scan_time = MWIFIEX_SPECIFIC_SCAN_CHAN_TIME;
293 adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME;
294 adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME;
296 adapter->scan_probes = 1;
298 adapter->multiple_dtim = 1;
300 adapter->local_listen_interval = 0; /* default value in firmware
303 adapter->is_deep_sleep = false;
305 adapter->delay_null_pkt = false;
306 adapter->delay_to_ps = 1000;
307 adapter->enhanced_ps_mode = PS_MODE_AUTO;
309 adapter->gen_null_pkt = false; /* Disable NULL Pkg generation by
311 adapter->pps_uapsd_mode = false; /* Disable pps/uapsd mode by
313 adapter->pm_wakeup_card_req = false;
315 adapter->pm_wakeup_fw_try = false;
317 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
318 adapter->curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
320 adapter->is_hs_configured = false;
321 adapter->hs_cfg.conditions = cpu_to_le32(HOST_SLEEP_CFG_COND_DEF);
322 adapter->hs_cfg.gpio = HOST_SLEEP_CFG_GPIO_DEF;
323 adapter->hs_cfg.gap = HOST_SLEEP_CFG_GAP_DEF;
324 adapter->hs_activated = false;
326 memset(adapter->event_body, 0, sizeof(adapter->event_body));
327 adapter->hw_dot_11n_dev_cap = 0;
328 adapter->hw_dev_mcs_support = 0;
329 adapter->sec_chan_offset = 0;
330 adapter->adhoc_11n_enabled = false;
332 mwifiex_wmm_init(adapter);
334 if (adapter->sleep_cfm) {
335 sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *)
336 adapter->sleep_cfm->data;
337 memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len);
338 sleep_cfm_buf->command =
339 cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH);
340 sleep_cfm_buf->size =
341 cpu_to_le16(adapter->sleep_cfm->len);
342 sleep_cfm_buf->result = 0;
343 sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM);
344 sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED);
346 memset(&adapter->sleep_params, 0, sizeof(adapter->sleep_params));
347 memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period));
348 adapter->tx_lock_flag = false;
349 adapter->null_pkt_interval = 0;
350 adapter->fw_bands = 0;
351 adapter->config_bands = 0;
352 adapter->adhoc_start_band = 0;
353 adapter->scan_channels = NULL;
354 adapter->fw_release_number = 0;
355 adapter->fw_cap_info = 0;
356 memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf));
357 adapter->event_cause = 0;
358 adapter->region_code = 0;
359 adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT;
360 adapter->adhoc_awake_period = 0;
361 memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter));
362 adapter->arp_filter_size = 0;
363 adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX;
364 adapter->empty_tx_q_cnt = 0;
368 * This function sets trans_start per tx_queue
370 void mwifiex_set_trans_start(struct net_device *dev)
374 for (i = 0; i < dev->num_tx_queues; i++)
375 netdev_get_tx_queue(dev, i)->trans_start = jiffies;
377 dev->trans_start = jiffies;
381 * This function wakes up all queues in net_device
383 void mwifiex_wake_up_net_dev_queue(struct net_device *netdev,
384 struct mwifiex_adapter *adapter)
386 unsigned long dev_queue_flags;
389 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags);
391 for (i = 0; i < netdev->num_tx_queues; i++) {
392 struct netdev_queue *txq = netdev_get_tx_queue(netdev, i);
394 if (netif_tx_queue_stopped(txq))
395 netif_tx_wake_queue(txq);
398 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags);
402 * This function stops all queues in net_device
404 void mwifiex_stop_net_dev_queue(struct net_device *netdev,
405 struct mwifiex_adapter *adapter)
407 unsigned long dev_queue_flags;
410 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags);
412 for (i = 0; i < netdev->num_tx_queues; i++) {
413 struct netdev_queue *txq = netdev_get_tx_queue(netdev, i);
415 if (!netif_tx_queue_stopped(txq))
416 netif_tx_stop_queue(txq);
419 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags);
423 * This function releases the lock variables and frees the locks and
426 static void mwifiex_free_lock_list(struct mwifiex_adapter *adapter)
428 struct mwifiex_private *priv;
432 list_del(&adapter->cmd_free_q);
433 list_del(&adapter->cmd_pending_q);
434 list_del(&adapter->scan_pending_q);
436 for (i = 0; i < adapter->priv_num; i++)
437 list_del(&adapter->bss_prio_tbl[i].bss_prio_head);
439 for (i = 0; i < adapter->priv_num; i++) {
440 if (adapter->priv[i]) {
441 priv = adapter->priv[i];
442 for (j = 0; j < MAX_NUM_TID; ++j)
443 list_del(&priv->wmm.tid_tbl_ptr[j].ra_list);
444 list_del(&priv->tx_ba_stream_tbl_ptr);
445 list_del(&priv->rx_reorder_tbl_ptr);
446 list_del(&priv->sta_list);
452 * This function frees the adapter structure.
454 * The freeing operation is done recursively, by canceling all
455 * pending commands, freeing the member buffers previously
456 * allocated (command buffers, scan table buffer, sleep confirm
457 * command buffer), stopping the timers and calling the cleanup
458 * routines for every interface, before the actual adapter
459 * structure is freed.
462 mwifiex_free_adapter(struct mwifiex_adapter *adapter)
465 pr_err("%s: adapter is NULL\n", __func__);
469 mwifiex_cancel_all_pending_cmd(adapter);
471 /* Free lock variables */
472 mwifiex_free_lock_list(adapter);
474 /* Free command buffer */
475 dev_dbg(adapter->dev, "info: free cmd buffer\n");
476 mwifiex_free_cmd_buffer(adapter);
478 del_timer(&adapter->cmd_timer);
480 dev_dbg(adapter->dev, "info: free scan table\n");
482 if (adapter->if_ops.cleanup_if)
483 adapter->if_ops.cleanup_if(adapter);
485 if (adapter->sleep_cfm)
486 dev_kfree_skb_any(adapter->sleep_cfm);
490 * This function intializes the lock variables and
493 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter)
495 struct mwifiex_private *priv;
498 spin_lock_init(&adapter->mwifiex_lock);
499 spin_lock_init(&adapter->int_lock);
500 spin_lock_init(&adapter->main_proc_lock);
501 spin_lock_init(&adapter->mwifiex_cmd_lock);
502 spin_lock_init(&adapter->queue_lock);
503 for (i = 0; i < adapter->priv_num; i++) {
504 if (adapter->priv[i]) {
505 priv = adapter->priv[i];
506 spin_lock_init(&priv->rx_pkt_lock);
507 spin_lock_init(&priv->wmm.ra_list_spinlock);
508 spin_lock_init(&priv->curr_bcn_buf_lock);
509 spin_lock_init(&priv->sta_list_spinlock);
513 /* Initialize cmd_free_q */
514 INIT_LIST_HEAD(&adapter->cmd_free_q);
515 /* Initialize cmd_pending_q */
516 INIT_LIST_HEAD(&adapter->cmd_pending_q);
517 /* Initialize scan_pending_q */
518 INIT_LIST_HEAD(&adapter->scan_pending_q);
520 spin_lock_init(&adapter->cmd_free_q_lock);
521 spin_lock_init(&adapter->cmd_pending_q_lock);
522 spin_lock_init(&adapter->scan_pending_q_lock);
524 skb_queue_head_init(&adapter->usb_rx_data_q);
526 for (i = 0; i < adapter->priv_num; ++i) {
527 INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head);
528 adapter->bss_prio_tbl[i].bss_prio_cur = NULL;
529 spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock);
532 for (i = 0; i < adapter->priv_num; i++) {
533 if (!adapter->priv[i])
535 priv = adapter->priv[i];
536 for (j = 0; j < MAX_NUM_TID; ++j) {
537 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list);
538 spin_lock_init(&priv->wmm.tid_tbl_ptr[j].tid_tbl_lock);
540 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr);
541 INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr);
542 INIT_LIST_HEAD(&priv->sta_list);
544 spin_lock_init(&priv->tx_ba_stream_tbl_lock);
545 spin_lock_init(&priv->rx_reorder_tbl_lock);
552 * This function initializes the firmware.
554 * The following operations are performed sequentially -
555 * - Allocate adapter structure
556 * - Initialize the adapter structure
557 * - Initialize the private structure
558 * - Add BSS priority tables to the adapter structure
559 * - For each interface, send the init commands to firmware
560 * - Send the first command in command pending queue, if available
562 int mwifiex_init_fw(struct mwifiex_adapter *adapter)
565 struct mwifiex_private *priv;
566 u8 i, first_sta = true;
567 int is_cmd_pend_q_empty;
570 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
572 /* Allocate memory for member of adapter structure */
573 ret = mwifiex_allocate_adapter(adapter);
577 /* Initialize adapter structure */
578 mwifiex_init_adapter(adapter);
580 for (i = 0; i < adapter->priv_num; i++) {
581 if (adapter->priv[i]) {
582 priv = adapter->priv[i];
584 /* Initialize private structure */
585 ret = mwifiex_init_priv(priv);
591 if (adapter->if_ops.init_fw_port) {
592 if (adapter->if_ops.init_fw_port(adapter))
596 for (i = 0; i < adapter->priv_num; i++) {
597 if (adapter->priv[i]) {
598 ret = mwifiex_sta_init_cmd(adapter->priv[i], first_sta);
606 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
607 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
608 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
609 if (!is_cmd_pend_q_empty) {
610 /* Send the first command in queue and return */
611 if (mwifiex_main_process(adapter) != -1)
614 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
621 * This function deletes the BSS priority tables.
623 * The function traverses through all the allocated BSS priority nodes
624 * in every BSS priority table and frees them.
626 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv)
629 struct mwifiex_adapter *adapter = priv->adapter;
630 struct mwifiex_bss_prio_node *bssprio_node, *tmp_node, **cur;
631 struct list_head *head;
632 spinlock_t *lock; /* bss priority lock */
635 for (i = 0; i < adapter->priv_num; ++i) {
636 head = &adapter->bss_prio_tbl[i].bss_prio_head;
637 cur = &adapter->bss_prio_tbl[i].bss_prio_cur;
638 lock = &adapter->bss_prio_tbl[i].bss_prio_lock;
639 dev_dbg(adapter->dev, "info: delete BSS priority table,"
640 " bss_type = %d, bss_num = %d, i = %d,"
641 " head = %p, cur = %p\n",
642 priv->bss_type, priv->bss_num, i, head, *cur);
644 spin_lock_irqsave(lock, flags);
645 if (list_empty(head)) {
646 spin_unlock_irqrestore(lock, flags);
649 bssprio_node = list_first_entry(head,
650 struct mwifiex_bss_prio_node, list);
651 spin_unlock_irqrestore(lock, flags);
653 list_for_each_entry_safe(bssprio_node, tmp_node, head,
655 if (bssprio_node->priv == priv) {
656 dev_dbg(adapter->dev, "info: Delete "
657 "node %p, next = %p\n",
658 bssprio_node, tmp_node);
659 spin_lock_irqsave(lock, flags);
660 list_del(&bssprio_node->list);
661 spin_unlock_irqrestore(lock, flags);
665 *cur = (struct mwifiex_bss_prio_node *)head;
671 * This function frees the private structure, including cleans
672 * up the TX and RX queues and frees the BSS priority tables.
674 void mwifiex_free_priv(struct mwifiex_private *priv)
676 mwifiex_clean_txrx(priv);
677 mwifiex_delete_bss_prio_tbl(priv);
678 mwifiex_free_curr_bcn(priv);
682 * This function is used to shutdown the driver.
684 * The following operations are performed sequentially -
685 * - Check if already shut down
686 * - Make sure the main process has stopped
687 * - Clean up the Tx and Rx queues
688 * - Delete BSS priority tables
690 * - Notify completion
693 mwifiex_shutdown_drv(struct mwifiex_adapter *adapter)
695 int ret = -EINPROGRESS;
696 struct mwifiex_private *priv;
701 /* mwifiex already shutdown */
702 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
705 adapter->hw_status = MWIFIEX_HW_STATUS_CLOSING;
706 /* wait for mwifiex_process to complete */
707 if (adapter->mwifiex_processing) {
708 dev_warn(adapter->dev, "main process is still running\n");
712 /* cancel current command */
713 if (adapter->curr_cmd) {
714 dev_warn(adapter->dev, "curr_cmd is still in processing\n");
715 del_timer(&adapter->cmd_timer);
716 mwifiex_insert_cmd_to_free_q(adapter, adapter->curr_cmd);
717 adapter->curr_cmd = NULL;
720 /* shut down mwifiex */
721 dev_dbg(adapter->dev, "info: shutdown mwifiex...\n");
723 /* Clean up Tx/Rx queues and delete BSS priority table */
724 for (i = 0; i < adapter->priv_num; i++) {
725 if (adapter->priv[i]) {
726 priv = adapter->priv[i];
728 mwifiex_clean_txrx(priv);
729 mwifiex_delete_bss_prio_tbl(priv);
733 spin_lock_irqsave(&adapter->mwifiex_lock, flags);
735 if (adapter->if_ops.data_complete) {
736 while ((skb = skb_dequeue(&adapter->usb_rx_data_q))) {
737 struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb);
739 priv = adapter->priv[rx_info->bss_num];
741 priv->stats.rx_dropped++;
743 adapter->if_ops.data_complete(adapter, skb);
747 /* Free adapter structure */
748 mwifiex_free_adapter(adapter);
750 spin_unlock_irqrestore(&adapter->mwifiex_lock, flags);
752 /* Notify completion */
753 ret = mwifiex_shutdown_fw_complete(adapter);
759 * This function downloads the firmware to the card.
761 * The actual download is preceded by two sanity checks -
762 * - Check if firmware is already running
763 * - Check if the interface is the winner to download the firmware
765 * ...and followed by another -
766 * - Check if the firmware is downloaded successfully
768 * After download is successfully completed, the host interrupts are enabled.
770 int mwifiex_dnld_fw(struct mwifiex_adapter *adapter,
771 struct mwifiex_fw_image *pmfw)
776 if (adapter->if_ops.check_fw_status) {
779 /* check if firmware is already running */
780 ret = adapter->if_ops.check_fw_status(adapter, poll_num);
782 dev_notice(adapter->dev,
783 "WLAN FW already running! Skip FW dnld\n");
787 poll_num = MAX_FIRMWARE_POLL_TRIES;
789 /* check if we are the winner for downloading FW */
790 if (!adapter->winner) {
791 dev_notice(adapter->dev,
792 "FW already running! Skip FW dnld\n");
793 poll_num = MAX_MULTI_INTERFACE_POLL_TRIES;
799 /* Download firmware with helper */
800 ret = adapter->if_ops.prog_fw(adapter, pmfw);
802 dev_err(adapter->dev, "prog_fw failed ret=%#x\n", ret);
808 /* Check if the firmware is downloaded successfully or not */
809 ret = adapter->if_ops.check_fw_status(adapter, poll_num);
811 dev_err(adapter->dev, "FW failed to be active in time\n");
815 /* re-enable host interrupt for mwifiex after fw dnld is successful */
816 if (adapter->if_ops.enable_int)
817 adapter->if_ops.enable_int(adapter);