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 if (priv->scan_request) {
88 dev_dbg(priv->adapter->dev,
89 "info: aborting scan\n");
90 cfg80211_scan_done(priv->scan_request, 1);
91 priv->scan_request = NULL;
93 dev_dbg(priv->adapter->dev,
94 "info: scan already aborted\n");
97 kfree(priv->user_scan_cfg);
98 priv->user_scan_cfg = NULL;
103 if (!atomic_read(&priv->adapter->is_tx_received)) {
104 adapter->empty_tx_q_cnt++;
105 if (adapter->empty_tx_q_cnt == MWIFIEX_MAX_EMPTY_TX_Q_CNT) {
107 * No Tx traffic for 200msec. Get scan command from
108 * scan pending queue and put to cmd pending queue to
109 * resume scan operation
111 adapter->scan_delay_cnt = 0;
112 adapter->empty_tx_q_cnt = 0;
113 spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
114 cmd_node = list_first_entry(&adapter->scan_pending_q,
115 struct cmd_ctrl_node, list);
116 list_del(&cmd_node->list);
117 spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
120 mwifiex_insert_cmd_to_pending_q(adapter, cmd_node,
122 queue_work(adapter->workqueue, &adapter->main_work);
126 adapter->empty_tx_q_cnt = 0;
129 /* Delay scan operation further by 20msec */
130 mod_timer(&priv->scan_delay_timer, jiffies +
131 msecs_to_jiffies(MWIFIEX_SCAN_DELAY_MSEC));
132 adapter->scan_delay_cnt++;
135 if (atomic_read(&priv->adapter->is_tx_received))
136 atomic_set(&priv->adapter->is_tx_received, false);
142 * This function initializes the private structure and sets default
143 * values to the members.
145 * Additionally, it also initializes all the locks and sets up all the
148 int mwifiex_init_priv(struct mwifiex_private *priv)
152 priv->media_connected = false;
153 memset(priv->curr_addr, 0xff, ETH_ALEN);
155 priv->pkt_tx_ctrl = 0;
156 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
157 priv->data_rate = 0; /* Initially indicate the rate as auto */
158 priv->is_data_rate_auto = true;
159 priv->bcn_avg_factor = DEFAULT_BCN_AVG_FACTOR;
160 priv->data_avg_factor = DEFAULT_DATA_AVG_FACTOR;
162 priv->sec_info.wep_enabled = 0;
163 priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
164 priv->sec_info.encryption_mode = 0;
165 for (i = 0; i < ARRAY_SIZE(priv->wep_key); i++)
166 memset(&priv->wep_key[i], 0, sizeof(struct mwifiex_wep_key));
167 priv->wep_key_curr_index = 0;
168 priv->curr_pkt_filter = HostCmd_ACT_MAC_RX_ON | HostCmd_ACT_MAC_TX_ON |
169 HostCmd_ACT_MAC_ETHERNETII_ENABLE;
171 priv->beacon_period = 100; /* beacon interval */ ;
172 priv->attempted_bss_desc = NULL;
173 memset(&priv->curr_bss_params, 0, sizeof(priv->curr_bss_params));
174 priv->listen_interval = MWIFIEX_DEFAULT_LISTEN_INTERVAL;
176 memset(&priv->prev_ssid, 0, sizeof(priv->prev_ssid));
177 memset(&priv->prev_bssid, 0, sizeof(priv->prev_bssid));
178 memset(&priv->assoc_rsp_buf, 0, sizeof(priv->assoc_rsp_buf));
179 priv->assoc_rsp_size = 0;
180 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
181 priv->atim_window = 0;
182 priv->adhoc_state = ADHOC_IDLE;
183 priv->tx_power_level = 0;
184 priv->max_tx_power_level = 0;
185 priv->min_tx_power_level = 0;
187 priv->rxpd_htinfo = 0;
189 priv->rate_bitmap = 0;
190 priv->data_rssi_last = 0;
191 priv->data_rssi_avg = 0;
192 priv->data_nf_avg = 0;
193 priv->data_nf_last = 0;
194 priv->bcn_rssi_last = 0;
195 priv->bcn_rssi_avg = 0;
196 priv->bcn_nf_avg = 0;
197 priv->bcn_nf_last = 0;
198 memset(&priv->wpa_ie, 0, sizeof(priv->wpa_ie));
199 memset(&priv->aes_key, 0, sizeof(priv->aes_key));
200 priv->wpa_ie_len = 0;
201 priv->wpa_is_gtk_set = false;
203 memset(&priv->assoc_tlv_buf, 0, sizeof(priv->assoc_tlv_buf));
204 priv->assoc_tlv_buf_len = 0;
205 memset(&priv->wps, 0, sizeof(priv->wps));
206 memset(&priv->gen_ie_buf, 0, sizeof(priv->gen_ie_buf));
207 priv->gen_ie_buf_len = 0;
208 memset(priv->vs_ie, 0, sizeof(priv->vs_ie));
210 priv->wmm_required = true;
211 priv->wmm_enabled = false;
212 priv->wmm_qosinfo = 0;
213 priv->curr_bcn_buf = NULL;
214 priv->curr_bcn_size = 0;
216 priv->wps_ie_len = 0;
217 priv->ap_11n_enabled = 0;
218 memset(&priv->roc_cfg, 0, sizeof(priv->roc_cfg));
220 priv->scan_block = false;
222 setup_timer(&priv->scan_delay_timer, scan_delay_timer_fn,
223 (unsigned long)priv);
225 return mwifiex_add_bss_prio_tbl(priv);
229 * This function allocates buffers for members of the adapter
232 * The memory allocated includes scan table, command buffers, and
233 * sleep confirm command buffer. In addition, the queues are
236 static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter)
240 /* Allocate command buffer */
241 ret = mwifiex_alloc_cmd_buffer(adapter);
243 dev_err(adapter->dev, "%s: failed to alloc cmd buffer\n",
249 dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm)
252 if (!adapter->sleep_cfm) {
253 dev_err(adapter->dev, "%s: failed to alloc sleep cfm"
254 " cmd buffer\n", __func__);
257 skb_reserve(adapter->sleep_cfm, INTF_HEADER_LEN);
263 * This function initializes the adapter structure and sets default
264 * values to the members of adapter.
266 * This also initializes the WMM related parameters in the driver private
269 static void mwifiex_init_adapter(struct mwifiex_adapter *adapter)
271 struct mwifiex_opt_sleep_confirm *sleep_cfm_buf = NULL;
273 skb_put(adapter->sleep_cfm, sizeof(struct mwifiex_opt_sleep_confirm));
275 adapter->cmd_sent = false;
277 if (adapter->iface_type == MWIFIEX_SDIO)
278 adapter->data_sent = true;
280 adapter->data_sent = false;
282 adapter->cmd_resp_received = false;
283 adapter->event_received = false;
284 adapter->data_received = false;
286 adapter->surprise_removed = false;
288 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
290 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
291 adapter->ps_state = PS_STATE_AWAKE;
292 adapter->need_to_wakeup = false;
294 adapter->scan_mode = HostCmd_BSS_MODE_ANY;
295 adapter->specific_scan_time = MWIFIEX_SPECIFIC_SCAN_CHAN_TIME;
296 adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME;
297 adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME;
299 adapter->scan_probes = 1;
301 adapter->multiple_dtim = 1;
303 adapter->local_listen_interval = 0; /* default value in firmware
306 adapter->is_deep_sleep = false;
308 adapter->delay_null_pkt = false;
309 adapter->delay_to_ps = 1000;
310 adapter->enhanced_ps_mode = PS_MODE_AUTO;
312 adapter->gen_null_pkt = false; /* Disable NULL Pkg generation by
314 adapter->pps_uapsd_mode = false; /* Disable pps/uapsd mode by
316 adapter->pm_wakeup_card_req = false;
318 adapter->pm_wakeup_fw_try = false;
320 adapter->max_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
321 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
322 adapter->curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
324 adapter->is_hs_configured = false;
325 adapter->hs_cfg.conditions = cpu_to_le32(HOST_SLEEP_CFG_COND_DEF);
326 adapter->hs_cfg.gpio = HOST_SLEEP_CFG_GPIO_DEF;
327 adapter->hs_cfg.gap = HOST_SLEEP_CFG_GAP_DEF;
328 adapter->hs_activated = false;
330 memset(adapter->event_body, 0, sizeof(adapter->event_body));
331 adapter->hw_dot_11n_dev_cap = 0;
332 adapter->hw_dev_mcs_support = 0;
333 adapter->sec_chan_offset = 0;
334 adapter->adhoc_11n_enabled = false;
336 mwifiex_wmm_init(adapter);
338 if (adapter->sleep_cfm) {
339 sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *)
340 adapter->sleep_cfm->data;
341 memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len);
342 sleep_cfm_buf->command =
343 cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH);
344 sleep_cfm_buf->size =
345 cpu_to_le16(adapter->sleep_cfm->len);
346 sleep_cfm_buf->result = 0;
347 sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM);
348 sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED);
350 memset(&adapter->sleep_params, 0, sizeof(adapter->sleep_params));
351 memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period));
352 adapter->tx_lock_flag = false;
353 adapter->null_pkt_interval = 0;
354 adapter->fw_bands = 0;
355 adapter->config_bands = 0;
356 adapter->adhoc_start_band = 0;
357 adapter->scan_channels = NULL;
358 adapter->fw_release_number = 0;
359 adapter->fw_cap_info = 0;
360 memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf));
361 adapter->event_cause = 0;
362 adapter->region_code = 0;
363 adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT;
364 adapter->adhoc_awake_period = 0;
365 memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter));
366 adapter->arp_filter_size = 0;
367 adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX;
368 adapter->empty_tx_q_cnt = 0;
372 * This function sets trans_start per tx_queue
374 void mwifiex_set_trans_start(struct net_device *dev)
378 for (i = 0; i < dev->num_tx_queues; i++)
379 netdev_get_tx_queue(dev, i)->trans_start = jiffies;
381 dev->trans_start = jiffies;
385 * This function wakes up all queues in net_device
387 void mwifiex_wake_up_net_dev_queue(struct net_device *netdev,
388 struct mwifiex_adapter *adapter)
390 unsigned long dev_queue_flags;
393 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags);
395 for (i = 0; i < netdev->num_tx_queues; i++) {
396 struct netdev_queue *txq = netdev_get_tx_queue(netdev, i);
398 if (netif_tx_queue_stopped(txq))
399 netif_tx_wake_queue(txq);
402 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags);
406 * This function stops all queues in net_device
408 void mwifiex_stop_net_dev_queue(struct net_device *netdev,
409 struct mwifiex_adapter *adapter)
411 unsigned long dev_queue_flags;
414 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags);
416 for (i = 0; i < netdev->num_tx_queues; i++) {
417 struct netdev_queue *txq = netdev_get_tx_queue(netdev, i);
419 if (!netif_tx_queue_stopped(txq))
420 netif_tx_stop_queue(txq);
423 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags);
427 * This function releases the lock variables and frees the locks and
430 static void mwifiex_free_lock_list(struct mwifiex_adapter *adapter)
432 struct mwifiex_private *priv;
436 list_del(&adapter->cmd_free_q);
437 list_del(&adapter->cmd_pending_q);
438 list_del(&adapter->scan_pending_q);
440 for (i = 0; i < adapter->priv_num; i++)
441 list_del(&adapter->bss_prio_tbl[i].bss_prio_head);
443 for (i = 0; i < adapter->priv_num; i++) {
444 if (adapter->priv[i]) {
445 priv = adapter->priv[i];
446 for (j = 0; j < MAX_NUM_TID; ++j)
447 list_del(&priv->wmm.tid_tbl_ptr[j].ra_list);
448 list_del(&priv->tx_ba_stream_tbl_ptr);
449 list_del(&priv->rx_reorder_tbl_ptr);
450 list_del(&priv->sta_list);
456 * This function frees the adapter structure.
458 * The freeing operation is done recursively, by canceling all
459 * pending commands, freeing the member buffers previously
460 * allocated (command buffers, scan table buffer, sleep confirm
461 * command buffer), stopping the timers and calling the cleanup
462 * routines for every interface, before the actual adapter
463 * structure is freed.
466 mwifiex_free_adapter(struct mwifiex_adapter *adapter)
469 pr_err("%s: adapter is NULL\n", __func__);
473 mwifiex_cancel_all_pending_cmd(adapter);
475 /* Free lock variables */
476 mwifiex_free_lock_list(adapter);
478 /* Free command buffer */
479 dev_dbg(adapter->dev, "info: free cmd buffer\n");
480 mwifiex_free_cmd_buffer(adapter);
482 del_timer(&adapter->cmd_timer);
484 dev_dbg(adapter->dev, "info: free scan table\n");
486 if (adapter->if_ops.cleanup_if)
487 adapter->if_ops.cleanup_if(adapter);
489 if (adapter->sleep_cfm)
490 dev_kfree_skb_any(adapter->sleep_cfm);
494 * This function intializes the lock variables and
497 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter)
499 struct mwifiex_private *priv;
502 spin_lock_init(&adapter->mwifiex_lock);
503 spin_lock_init(&adapter->int_lock);
504 spin_lock_init(&adapter->main_proc_lock);
505 spin_lock_init(&adapter->mwifiex_cmd_lock);
506 spin_lock_init(&adapter->queue_lock);
507 for (i = 0; i < adapter->priv_num; i++) {
508 if (adapter->priv[i]) {
509 priv = adapter->priv[i];
510 spin_lock_init(&priv->rx_pkt_lock);
511 spin_lock_init(&priv->wmm.ra_list_spinlock);
512 spin_lock_init(&priv->curr_bcn_buf_lock);
513 spin_lock_init(&priv->sta_list_spinlock);
517 /* Initialize cmd_free_q */
518 INIT_LIST_HEAD(&adapter->cmd_free_q);
519 /* Initialize cmd_pending_q */
520 INIT_LIST_HEAD(&adapter->cmd_pending_q);
521 /* Initialize scan_pending_q */
522 INIT_LIST_HEAD(&adapter->scan_pending_q);
524 spin_lock_init(&adapter->cmd_free_q_lock);
525 spin_lock_init(&adapter->cmd_pending_q_lock);
526 spin_lock_init(&adapter->scan_pending_q_lock);
528 skb_queue_head_init(&adapter->usb_rx_data_q);
530 for (i = 0; i < adapter->priv_num; ++i) {
531 INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head);
532 adapter->bss_prio_tbl[i].bss_prio_cur = NULL;
533 spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock);
536 for (i = 0; i < adapter->priv_num; i++) {
537 if (!adapter->priv[i])
539 priv = adapter->priv[i];
540 for (j = 0; j < MAX_NUM_TID; ++j) {
541 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list);
542 spin_lock_init(&priv->wmm.tid_tbl_ptr[j].tid_tbl_lock);
544 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr);
545 INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr);
546 INIT_LIST_HEAD(&priv->sta_list);
548 spin_lock_init(&priv->tx_ba_stream_tbl_lock);
549 spin_lock_init(&priv->rx_reorder_tbl_lock);
556 * This function initializes the firmware.
558 * The following operations are performed sequentially -
559 * - Allocate adapter structure
560 * - Initialize the adapter structure
561 * - Initialize the private structure
562 * - Add BSS priority tables to the adapter structure
563 * - For each interface, send the init commands to firmware
564 * - Send the first command in command pending queue, if available
566 int mwifiex_init_fw(struct mwifiex_adapter *adapter)
569 struct mwifiex_private *priv;
570 u8 i, first_sta = true;
571 int is_cmd_pend_q_empty;
574 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
576 /* Allocate memory for member of adapter structure */
577 ret = mwifiex_allocate_adapter(adapter);
581 /* Initialize adapter structure */
582 mwifiex_init_adapter(adapter);
584 for (i = 0; i < adapter->priv_num; i++) {
585 if (adapter->priv[i]) {
586 priv = adapter->priv[i];
588 /* Initialize private structure */
589 ret = mwifiex_init_priv(priv);
594 for (i = 0; i < adapter->priv_num; i++) {
595 if (adapter->priv[i]) {
596 ret = mwifiex_sta_init_cmd(adapter->priv[i], first_sta);
604 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
605 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
606 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
607 if (!is_cmd_pend_q_empty) {
608 /* Send the first command in queue and return */
609 if (mwifiex_main_process(adapter) != -1)
612 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
619 * This function deletes the BSS priority tables.
621 * The function traverses through all the allocated BSS priority nodes
622 * in every BSS priority table and frees them.
624 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv)
627 struct mwifiex_adapter *adapter = priv->adapter;
628 struct mwifiex_bss_prio_node *bssprio_node, *tmp_node, **cur;
629 struct list_head *head;
630 spinlock_t *lock; /* bss priority lock */
633 for (i = 0; i < adapter->priv_num; ++i) {
634 head = &adapter->bss_prio_tbl[i].bss_prio_head;
635 cur = &adapter->bss_prio_tbl[i].bss_prio_cur;
636 lock = &adapter->bss_prio_tbl[i].bss_prio_lock;
637 dev_dbg(adapter->dev, "info: delete BSS priority table,"
638 " bss_type = %d, bss_num = %d, i = %d,"
639 " head = %p, cur = %p\n",
640 priv->bss_type, priv->bss_num, i, head, *cur);
642 spin_lock_irqsave(lock, flags);
643 if (list_empty(head)) {
644 spin_unlock_irqrestore(lock, flags);
647 bssprio_node = list_first_entry(head,
648 struct mwifiex_bss_prio_node, list);
649 spin_unlock_irqrestore(lock, flags);
651 list_for_each_entry_safe(bssprio_node, tmp_node, head,
653 if (bssprio_node->priv == priv) {
654 dev_dbg(adapter->dev, "info: Delete "
655 "node %p, next = %p\n",
656 bssprio_node, tmp_node);
657 spin_lock_irqsave(lock, flags);
658 list_del(&bssprio_node->list);
659 spin_unlock_irqrestore(lock, flags);
663 *cur = (struct mwifiex_bss_prio_node *)head;
669 * This function frees the private structure, including cleans
670 * up the TX and RX queues and frees the BSS priority tables.
672 void mwifiex_free_priv(struct mwifiex_private *priv)
674 mwifiex_clean_txrx(priv);
675 mwifiex_delete_bss_prio_tbl(priv);
676 mwifiex_free_curr_bcn(priv);
680 * This function is used to shutdown the driver.
682 * The following operations are performed sequentially -
683 * - Check if already shut down
684 * - Make sure the main process has stopped
685 * - Clean up the Tx and Rx queues
686 * - Delete BSS priority tables
688 * - Notify completion
691 mwifiex_shutdown_drv(struct mwifiex_adapter *adapter)
693 int ret = -EINPROGRESS;
694 struct mwifiex_private *priv;
699 /* mwifiex already shutdown */
700 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
703 adapter->hw_status = MWIFIEX_HW_STATUS_CLOSING;
704 /* wait for mwifiex_process to complete */
705 if (adapter->mwifiex_processing) {
706 dev_warn(adapter->dev, "main process is still running\n");
710 /* shut down mwifiex */
711 dev_dbg(adapter->dev, "info: shutdown mwifiex...\n");
713 /* Clean up Tx/Rx queues and delete BSS priority table */
714 for (i = 0; i < adapter->priv_num; i++) {
715 if (adapter->priv[i]) {
716 priv = adapter->priv[i];
718 mwifiex_clean_txrx(priv);
719 mwifiex_delete_bss_prio_tbl(priv);
723 spin_lock_irqsave(&adapter->mwifiex_lock, flags);
725 if (adapter->if_ops.data_complete) {
726 while ((skb = skb_dequeue(&adapter->usb_rx_data_q))) {
727 struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb);
729 priv = adapter->priv[rx_info->bss_num];
731 priv->stats.rx_dropped++;
733 adapter->if_ops.data_complete(adapter, skb);
737 /* Free adapter structure */
738 mwifiex_free_adapter(adapter);
740 spin_unlock_irqrestore(&adapter->mwifiex_lock, flags);
742 /* Notify completion */
743 ret = mwifiex_shutdown_fw_complete(adapter);
749 * This function downloads the firmware to the card.
751 * The actual download is preceded by two sanity checks -
752 * - Check if firmware is already running
753 * - Check if the interface is the winner to download the firmware
755 * ...and followed by another -
756 * - Check if the firmware is downloaded successfully
758 * After download is successfully completed, the host interrupts are enabled.
760 int mwifiex_dnld_fw(struct mwifiex_adapter *adapter,
761 struct mwifiex_fw_image *pmfw)
766 if (adapter->if_ops.check_fw_status) {
769 /* check if firmware is already running */
770 ret = adapter->if_ops.check_fw_status(adapter, poll_num);
772 dev_notice(adapter->dev,
773 "WLAN FW already running! Skip FW dnld\n");
777 poll_num = MAX_FIRMWARE_POLL_TRIES;
779 /* check if we are the winner for downloading FW */
780 if (!adapter->winner) {
781 dev_notice(adapter->dev,
782 "FW already running! Skip FW dnld\n");
783 poll_num = MAX_MULTI_INTERFACE_POLL_TRIES;
789 /* Download firmware with helper */
790 ret = adapter->if_ops.prog_fw(adapter, pmfw);
792 dev_err(adapter->dev, "prog_fw failed ret=%#x\n", ret);
798 /* Check if the firmware is downloaded successfully or not */
799 ret = adapter->if_ops.check_fw_status(adapter, poll_num);
801 dev_err(adapter->dev, "FW failed to be active in time\n");
805 /* re-enable host interrupt for mwifiex after fw dnld is successful */
806 if (adapter->if_ops.enable_int)
807 adapter->if_ops.enable_int(adapter);