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 cmd_node
->wait_q_enabled
= false;
77 mwifiex_insert_cmd_to_free_q(adapter
, cmd_node
);
79 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
, flags
);
81 spin_lock_irqsave(&adapter
->mwifiex_cmd_lock
, flags
);
82 adapter
->scan_processing
= false;
83 adapter
->scan_delay_cnt
= 0;
84 adapter
->empty_tx_q_cnt
= 0;
85 spin_unlock_irqrestore(&adapter
->mwifiex_cmd_lock
, flags
);
87 if (priv
->user_scan_cfg
) {
88 dev_dbg(priv
->adapter
->dev
,
89 "info: %s: scan aborted\n", __func__
);
90 cfg80211_scan_done(priv
->scan_request
, 1);
91 priv
->scan_request
= NULL
;
92 kfree(priv
->user_scan_cfg
);
93 priv
->user_scan_cfg
= NULL
;
98 if (!atomic_read(&priv
->adapter
->is_tx_received
)) {
99 adapter
->empty_tx_q_cnt
++;
100 if (adapter
->empty_tx_q_cnt
== MWIFIEX_MAX_EMPTY_TX_Q_CNT
) {
102 * No Tx traffic for 200msec. Get scan command from
103 * scan pending queue and put to cmd pending queue to
104 * resume scan operation
106 adapter
->scan_delay_cnt
= 0;
107 adapter
->empty_tx_q_cnt
= 0;
108 spin_lock_irqsave(&adapter
->scan_pending_q_lock
, flags
);
109 cmd_node
= list_first_entry(&adapter
->scan_pending_q
,
110 struct cmd_ctrl_node
, list
);
111 list_del(&cmd_node
->list
);
112 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
,
115 mwifiex_insert_cmd_to_pending_q(adapter
, cmd_node
,
120 adapter
->empty_tx_q_cnt
= 0;
123 /* Delay scan operation further by 20msec */
124 mod_timer(&priv
->scan_delay_timer
, jiffies
+
125 msecs_to_jiffies(MWIFIEX_SCAN_DELAY_MSEC
));
126 adapter
->scan_delay_cnt
++;
129 if (atomic_read(&priv
->adapter
->is_tx_received
))
130 atomic_set(&priv
->adapter
->is_tx_received
, false);
136 * This function initializes the private structure and sets default
137 * values to the members.
139 * Additionally, it also initializes all the locks and sets up all the
142 static int mwifiex_init_priv(struct mwifiex_private
*priv
)
146 priv
->media_connected
= false;
147 memset(priv
->curr_addr
, 0xff, ETH_ALEN
);
149 priv
->pkt_tx_ctrl
= 0;
150 priv
->bss_mode
= NL80211_IFTYPE_UNSPECIFIED
;
151 priv
->data_rate
= 0; /* Initially indicate the rate as auto */
152 priv
->is_data_rate_auto
= true;
153 priv
->bcn_avg_factor
= DEFAULT_BCN_AVG_FACTOR
;
154 priv
->data_avg_factor
= DEFAULT_DATA_AVG_FACTOR
;
156 priv
->sec_info
.wep_enabled
= 0;
157 priv
->sec_info
.authentication_mode
= NL80211_AUTHTYPE_OPEN_SYSTEM
;
158 priv
->sec_info
.encryption_mode
= 0;
159 for (i
= 0; i
< ARRAY_SIZE(priv
->wep_key
); i
++)
160 memset(&priv
->wep_key
[i
], 0, sizeof(struct mwifiex_wep_key
));
161 priv
->wep_key_curr_index
= 0;
162 priv
->curr_pkt_filter
= HostCmd_ACT_MAC_RX_ON
| HostCmd_ACT_MAC_TX_ON
|
163 HostCmd_ACT_MAC_ETHERNETII_ENABLE
;
165 priv
->beacon_period
= 100; /* beacon interval */ ;
166 priv
->attempted_bss_desc
= NULL
;
167 memset(&priv
->curr_bss_params
, 0, sizeof(priv
->curr_bss_params
));
168 priv
->listen_interval
= MWIFIEX_DEFAULT_LISTEN_INTERVAL
;
170 memset(&priv
->prev_ssid
, 0, sizeof(priv
->prev_ssid
));
171 memset(&priv
->prev_bssid
, 0, sizeof(priv
->prev_bssid
));
172 memset(&priv
->assoc_rsp_buf
, 0, sizeof(priv
->assoc_rsp_buf
));
173 priv
->assoc_rsp_size
= 0;
174 priv
->adhoc_channel
= DEFAULT_AD_HOC_CHANNEL
;
175 priv
->atim_window
= 0;
176 priv
->adhoc_state
= ADHOC_IDLE
;
177 priv
->tx_power_level
= 0;
178 priv
->max_tx_power_level
= 0;
179 priv
->min_tx_power_level
= 0;
181 priv
->rxpd_htinfo
= 0;
183 priv
->rate_bitmap
= 0;
184 priv
->data_rssi_last
= 0;
185 priv
->data_rssi_avg
= 0;
186 priv
->data_nf_avg
= 0;
187 priv
->data_nf_last
= 0;
188 priv
->bcn_rssi_last
= 0;
189 priv
->bcn_rssi_avg
= 0;
190 priv
->bcn_nf_avg
= 0;
191 priv
->bcn_nf_last
= 0;
192 memset(&priv
->wpa_ie
, 0, sizeof(priv
->wpa_ie
));
193 memset(&priv
->aes_key
, 0, sizeof(priv
->aes_key
));
194 priv
->wpa_ie_len
= 0;
195 priv
->wpa_is_gtk_set
= false;
197 memset(&priv
->assoc_tlv_buf
, 0, sizeof(priv
->assoc_tlv_buf
));
198 priv
->assoc_tlv_buf_len
= 0;
199 memset(&priv
->wps
, 0, sizeof(priv
->wps
));
200 memset(&priv
->gen_ie_buf
, 0, sizeof(priv
->gen_ie_buf
));
201 priv
->gen_ie_buf_len
= 0;
202 memset(priv
->vs_ie
, 0, sizeof(priv
->vs_ie
));
204 priv
->wmm_required
= true;
205 priv
->wmm_enabled
= false;
206 priv
->wmm_qosinfo
= 0;
207 priv
->curr_bcn_buf
= NULL
;
208 priv
->curr_bcn_size
= 0;
210 priv
->wps_ie_len
= 0;
211 priv
->ap_11n_enabled
= 0;
213 priv
->scan_block
= false;
215 setup_timer(&priv
->scan_delay_timer
, scan_delay_timer_fn
,
216 (unsigned long)priv
);
218 return mwifiex_add_bss_prio_tbl(priv
);
222 * This function allocates buffers for members of the adapter
225 * The memory allocated includes scan table, command buffers, and
226 * sleep confirm command buffer. In addition, the queues are
229 static int mwifiex_allocate_adapter(struct mwifiex_adapter
*adapter
)
233 /* Allocate command buffer */
234 ret
= mwifiex_alloc_cmd_buffer(adapter
);
236 dev_err(adapter
->dev
, "%s: failed to alloc cmd buffer\n",
242 dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm
)
245 if (!adapter
->sleep_cfm
) {
246 dev_err(adapter
->dev
, "%s: failed to alloc sleep cfm"
247 " cmd buffer\n", __func__
);
250 skb_reserve(adapter
->sleep_cfm
, INTF_HEADER_LEN
);
256 * This function initializes the adapter structure and sets default
257 * values to the members of adapter.
259 * This also initializes the WMM related parameters in the driver private
262 static void mwifiex_init_adapter(struct mwifiex_adapter
*adapter
)
264 struct mwifiex_opt_sleep_confirm
*sleep_cfm_buf
= NULL
;
266 skb_put(adapter
->sleep_cfm
, sizeof(struct mwifiex_opt_sleep_confirm
));
268 adapter
->cmd_sent
= false;
270 if (adapter
->iface_type
== MWIFIEX_SDIO
)
271 adapter
->data_sent
= true;
273 adapter
->data_sent
= false;
275 adapter
->cmd_resp_received
= false;
276 adapter
->event_received
= false;
277 adapter
->data_received
= false;
279 adapter
->surprise_removed
= false;
281 adapter
->hw_status
= MWIFIEX_HW_STATUS_INITIALIZING
;
283 adapter
->ps_mode
= MWIFIEX_802_11_POWER_MODE_CAM
;
284 adapter
->ps_state
= PS_STATE_AWAKE
;
285 adapter
->need_to_wakeup
= false;
287 adapter
->scan_mode
= HostCmd_BSS_MODE_ANY
;
288 adapter
->specific_scan_time
= MWIFIEX_SPECIFIC_SCAN_CHAN_TIME
;
289 adapter
->active_scan_time
= MWIFIEX_ACTIVE_SCAN_CHAN_TIME
;
290 adapter
->passive_scan_time
= MWIFIEX_PASSIVE_SCAN_CHAN_TIME
;
292 adapter
->scan_probes
= 1;
294 adapter
->multiple_dtim
= 1;
296 adapter
->local_listen_interval
= 0; /* default value in firmware
299 adapter
->is_deep_sleep
= false;
301 adapter
->delay_null_pkt
= false;
302 adapter
->delay_to_ps
= 1000;
303 adapter
->enhanced_ps_mode
= PS_MODE_AUTO
;
305 adapter
->gen_null_pkt
= false; /* Disable NULL Pkg generation by
307 adapter
->pps_uapsd_mode
= false; /* Disable pps/uapsd mode by
309 adapter
->pm_wakeup_card_req
= false;
311 adapter
->pm_wakeup_fw_try
= false;
313 adapter
->max_tx_buf_size
= MWIFIEX_TX_DATA_BUF_SIZE_2K
;
314 adapter
->tx_buf_size
= MWIFIEX_TX_DATA_BUF_SIZE_2K
;
315 adapter
->curr_tx_buf_size
= MWIFIEX_TX_DATA_BUF_SIZE_2K
;
317 adapter
->is_hs_configured
= false;
318 adapter
->hs_cfg
.conditions
= cpu_to_le32(HOST_SLEEP_CFG_COND_DEF
);
319 adapter
->hs_cfg
.gpio
= HOST_SLEEP_CFG_GPIO_DEF
;
320 adapter
->hs_cfg
.gap
= HOST_SLEEP_CFG_GAP_DEF
;
321 adapter
->hs_activated
= false;
323 memset(adapter
->event_body
, 0, sizeof(adapter
->event_body
));
324 adapter
->hw_dot_11n_dev_cap
= 0;
325 adapter
->hw_dev_mcs_support
= 0;
326 adapter
->sec_chan_offset
= 0;
327 adapter
->adhoc_11n_enabled
= false;
329 mwifiex_wmm_init(adapter
);
331 if (adapter
->sleep_cfm
) {
332 sleep_cfm_buf
= (struct mwifiex_opt_sleep_confirm
*)
333 adapter
->sleep_cfm
->data
;
334 memset(sleep_cfm_buf
, 0, adapter
->sleep_cfm
->len
);
335 sleep_cfm_buf
->command
=
336 cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH
);
337 sleep_cfm_buf
->size
=
338 cpu_to_le16(adapter
->sleep_cfm
->len
);
339 sleep_cfm_buf
->result
= 0;
340 sleep_cfm_buf
->action
= cpu_to_le16(SLEEP_CONFIRM
);
341 sleep_cfm_buf
->resp_ctrl
= cpu_to_le16(RESP_NEEDED
);
343 memset(&adapter
->sleep_params
, 0, sizeof(adapter
->sleep_params
));
344 memset(&adapter
->sleep_period
, 0, sizeof(adapter
->sleep_period
));
345 adapter
->tx_lock_flag
= false;
346 adapter
->null_pkt_interval
= 0;
347 adapter
->fw_bands
= 0;
348 adapter
->config_bands
= 0;
349 adapter
->adhoc_start_band
= 0;
350 adapter
->scan_channels
= NULL
;
351 adapter
->fw_release_number
= 0;
352 adapter
->fw_cap_info
= 0;
353 memset(&adapter
->upld_buf
, 0, sizeof(adapter
->upld_buf
));
354 adapter
->event_cause
= 0;
355 adapter
->region_code
= 0;
356 adapter
->bcn_miss_time_out
= DEFAULT_BCN_MISS_TIMEOUT
;
357 adapter
->adhoc_awake_period
= 0;
358 memset(&adapter
->arp_filter
, 0, sizeof(adapter
->arp_filter
));
359 adapter
->arp_filter_size
= 0;
360 adapter
->max_mgmt_ie_index
= MAX_MGMT_IE_INDEX
;
361 adapter
->empty_tx_q_cnt
= 0;
365 * This function sets trans_start per tx_queue
367 void mwifiex_set_trans_start(struct net_device
*dev
)
371 for (i
= 0; i
< dev
->num_tx_queues
; i
++)
372 netdev_get_tx_queue(dev
, i
)->trans_start
= jiffies
;
374 dev
->trans_start
= jiffies
;
378 * This function wakes up all queues in net_device
380 void mwifiex_wake_up_net_dev_queue(struct net_device
*netdev
,
381 struct mwifiex_adapter
*adapter
)
383 unsigned long dev_queue_flags
;
385 spin_lock_irqsave(&adapter
->queue_lock
, dev_queue_flags
);
386 netif_tx_wake_all_queues(netdev
);
387 spin_unlock_irqrestore(&adapter
->queue_lock
, dev_queue_flags
);
391 * This function stops all queues in net_device
393 void mwifiex_stop_net_dev_queue(struct net_device
*netdev
,
394 struct mwifiex_adapter
*adapter
)
396 unsigned long dev_queue_flags
;
398 spin_lock_irqsave(&adapter
->queue_lock
, dev_queue_flags
);
399 netif_tx_stop_all_queues(netdev
);
400 spin_unlock_irqrestore(&adapter
->queue_lock
, dev_queue_flags
);
404 * This function releases the lock variables and frees the locks and
407 static void mwifiex_free_lock_list(struct mwifiex_adapter
*adapter
)
409 struct mwifiex_private
*priv
;
413 list_del(&adapter
->cmd_free_q
);
414 list_del(&adapter
->cmd_pending_q
);
415 list_del(&adapter
->scan_pending_q
);
417 for (i
= 0; i
< adapter
->priv_num
; i
++)
418 list_del(&adapter
->bss_prio_tbl
[i
].bss_prio_head
);
420 for (i
= 0; i
< adapter
->priv_num
; i
++) {
421 if (adapter
->priv
[i
]) {
422 priv
= adapter
->priv
[i
];
423 for (j
= 0; j
< MAX_NUM_TID
; ++j
)
424 list_del(&priv
->wmm
.tid_tbl_ptr
[j
].ra_list
);
425 list_del(&priv
->tx_ba_stream_tbl_ptr
);
426 list_del(&priv
->rx_reorder_tbl_ptr
);
427 list_del(&priv
->sta_list
);
433 * This function frees the adapter structure.
435 * The freeing operation is done recursively, by canceling all
436 * pending commands, freeing the member buffers previously
437 * allocated (command buffers, scan table buffer, sleep confirm
438 * command buffer), stopping the timers and calling the cleanup
439 * routines for every interface, before the actual adapter
440 * structure is freed.
443 mwifiex_free_adapter(struct mwifiex_adapter
*adapter
)
446 pr_err("%s: adapter is NULL\n", __func__
);
450 mwifiex_cancel_all_pending_cmd(adapter
);
452 /* Free lock variables */
453 mwifiex_free_lock_list(adapter
);
455 /* Free command buffer */
456 dev_dbg(adapter
->dev
, "info: free cmd buffer\n");
457 mwifiex_free_cmd_buffer(adapter
);
459 del_timer(&adapter
->cmd_timer
);
461 dev_dbg(adapter
->dev
, "info: free scan table\n");
463 if (adapter
->if_ops
.cleanup_if
)
464 adapter
->if_ops
.cleanup_if(adapter
);
466 if (adapter
->sleep_cfm
)
467 dev_kfree_skb_any(adapter
->sleep_cfm
);
471 * This function intializes the lock variables and
474 int mwifiex_init_lock_list(struct mwifiex_adapter
*adapter
)
476 struct mwifiex_private
*priv
;
479 spin_lock_init(&adapter
->mwifiex_lock
);
480 spin_lock_init(&adapter
->int_lock
);
481 spin_lock_init(&adapter
->main_proc_lock
);
482 spin_lock_init(&adapter
->mwifiex_cmd_lock
);
483 spin_lock_init(&adapter
->queue_lock
);
484 for (i
= 0; i
< adapter
->priv_num
; i
++) {
485 if (adapter
->priv
[i
]) {
486 priv
= adapter
->priv
[i
];
487 spin_lock_init(&priv
->rx_pkt_lock
);
488 spin_lock_init(&priv
->wmm
.ra_list_spinlock
);
489 spin_lock_init(&priv
->curr_bcn_buf_lock
);
490 spin_lock_init(&priv
->sta_list_spinlock
);
494 /* Initialize cmd_free_q */
495 INIT_LIST_HEAD(&adapter
->cmd_free_q
);
496 /* Initialize cmd_pending_q */
497 INIT_LIST_HEAD(&adapter
->cmd_pending_q
);
498 /* Initialize scan_pending_q */
499 INIT_LIST_HEAD(&adapter
->scan_pending_q
);
501 spin_lock_init(&adapter
->cmd_free_q_lock
);
502 spin_lock_init(&adapter
->cmd_pending_q_lock
);
503 spin_lock_init(&adapter
->scan_pending_q_lock
);
505 skb_queue_head_init(&adapter
->usb_rx_data_q
);
507 for (i
= 0; i
< adapter
->priv_num
; ++i
) {
508 INIT_LIST_HEAD(&adapter
->bss_prio_tbl
[i
].bss_prio_head
);
509 adapter
->bss_prio_tbl
[i
].bss_prio_cur
= NULL
;
510 spin_lock_init(&adapter
->bss_prio_tbl
[i
].bss_prio_lock
);
513 for (i
= 0; i
< adapter
->priv_num
; i
++) {
514 if (!adapter
->priv
[i
])
516 priv
= adapter
->priv
[i
];
517 for (j
= 0; j
< MAX_NUM_TID
; ++j
) {
518 INIT_LIST_HEAD(&priv
->wmm
.tid_tbl_ptr
[j
].ra_list
);
519 spin_lock_init(&priv
->wmm
.tid_tbl_ptr
[j
].tid_tbl_lock
);
521 INIT_LIST_HEAD(&priv
->tx_ba_stream_tbl_ptr
);
522 INIT_LIST_HEAD(&priv
->rx_reorder_tbl_ptr
);
523 INIT_LIST_HEAD(&priv
->sta_list
);
525 spin_lock_init(&priv
->tx_ba_stream_tbl_lock
);
526 spin_lock_init(&priv
->rx_reorder_tbl_lock
);
533 * This function initializes the firmware.
535 * The following operations are performed sequentially -
536 * - Allocate adapter structure
537 * - Initialize the adapter structure
538 * - Initialize the private structure
539 * - Add BSS priority tables to the adapter structure
540 * - For each interface, send the init commands to firmware
541 * - Send the first command in command pending queue, if available
543 int mwifiex_init_fw(struct mwifiex_adapter
*adapter
)
546 struct mwifiex_private
*priv
;
547 u8 i
, first_sta
= true;
548 int is_cmd_pend_q_empty
;
551 adapter
->hw_status
= MWIFIEX_HW_STATUS_INITIALIZING
;
553 /* Allocate memory for member of adapter structure */
554 ret
= mwifiex_allocate_adapter(adapter
);
558 /* Initialize adapter structure */
559 mwifiex_init_adapter(adapter
);
561 for (i
= 0; i
< adapter
->priv_num
; i
++) {
562 if (adapter
->priv
[i
]) {
563 priv
= adapter
->priv
[i
];
565 /* Initialize private structure */
566 ret
= mwifiex_init_priv(priv
);
571 for (i
= 0; i
< adapter
->priv_num
; i
++) {
572 if (adapter
->priv
[i
]) {
573 ret
= mwifiex_sta_init_cmd(adapter
->priv
[i
], first_sta
);
581 spin_lock_irqsave(&adapter
->cmd_pending_q_lock
, flags
);
582 is_cmd_pend_q_empty
= list_empty(&adapter
->cmd_pending_q
);
583 spin_unlock_irqrestore(&adapter
->cmd_pending_q_lock
, flags
);
584 if (!is_cmd_pend_q_empty
) {
585 /* Send the first command in queue and return */
586 if (mwifiex_main_process(adapter
) != -1)
589 adapter
->hw_status
= MWIFIEX_HW_STATUS_READY
;
596 * This function deletes the BSS priority tables.
598 * The function traverses through all the allocated BSS priority nodes
599 * in every BSS priority table and frees them.
601 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private
*priv
)
604 struct mwifiex_adapter
*adapter
= priv
->adapter
;
605 struct mwifiex_bss_prio_node
*bssprio_node
, *tmp_node
, **cur
;
606 struct list_head
*head
;
607 spinlock_t
*lock
; /* bss priority lock */
610 for (i
= 0; i
< adapter
->priv_num
; ++i
) {
611 head
= &adapter
->bss_prio_tbl
[i
].bss_prio_head
;
612 cur
= &adapter
->bss_prio_tbl
[i
].bss_prio_cur
;
613 lock
= &adapter
->bss_prio_tbl
[i
].bss_prio_lock
;
614 dev_dbg(adapter
->dev
, "info: delete BSS priority table,"
615 " bss_type = %d, bss_num = %d, i = %d,"
616 " head = %p, cur = %p\n",
617 priv
->bss_type
, priv
->bss_num
, i
, head
, *cur
);
619 spin_lock_irqsave(lock
, flags
);
620 if (list_empty(head
)) {
621 spin_unlock_irqrestore(lock
, flags
);
624 bssprio_node
= list_first_entry(head
,
625 struct mwifiex_bss_prio_node
, list
);
626 spin_unlock_irqrestore(lock
, flags
);
628 list_for_each_entry_safe(bssprio_node
, tmp_node
, head
,
630 if (bssprio_node
->priv
== priv
) {
631 dev_dbg(adapter
->dev
, "info: Delete "
632 "node %p, next = %p\n",
633 bssprio_node
, tmp_node
);
634 spin_lock_irqsave(lock
, flags
);
635 list_del(&bssprio_node
->list
);
636 spin_unlock_irqrestore(lock
, flags
);
640 *cur
= (struct mwifiex_bss_prio_node
*)head
;
646 * This function is used to shutdown the driver.
648 * The following operations are performed sequentially -
649 * - Check if already shut down
650 * - Make sure the main process has stopped
651 * - Clean up the Tx and Rx queues
652 * - Delete BSS priority tables
654 * - Notify completion
657 mwifiex_shutdown_drv(struct mwifiex_adapter
*adapter
)
659 int ret
= -EINPROGRESS
;
660 struct mwifiex_private
*priv
;
665 /* mwifiex already shutdown */
666 if (adapter
->hw_status
== MWIFIEX_HW_STATUS_NOT_READY
)
669 adapter
->hw_status
= MWIFIEX_HW_STATUS_CLOSING
;
670 /* wait for mwifiex_process to complete */
671 if (adapter
->mwifiex_processing
) {
672 dev_warn(adapter
->dev
, "main process is still running\n");
676 /* shut down mwifiex */
677 dev_dbg(adapter
->dev
, "info: shutdown mwifiex...\n");
679 /* Clean up Tx/Rx queues and delete BSS priority table */
680 for (i
= 0; i
< adapter
->priv_num
; i
++) {
681 if (adapter
->priv
[i
]) {
682 priv
= adapter
->priv
[i
];
684 mwifiex_clean_txrx(priv
);
685 mwifiex_delete_bss_prio_tbl(priv
);
689 spin_lock_irqsave(&adapter
->mwifiex_lock
, flags
);
691 if (adapter
->if_ops
.data_complete
) {
692 while ((skb
= skb_dequeue(&adapter
->usb_rx_data_q
))) {
693 struct mwifiex_rxinfo
*rx_info
= MWIFIEX_SKB_RXCB(skb
);
695 priv
= adapter
->priv
[rx_info
->bss_num
];
697 priv
->stats
.rx_dropped
++;
699 adapter
->if_ops
.data_complete(adapter
, skb
);
703 /* Free adapter structure */
704 mwifiex_free_adapter(adapter
);
706 spin_unlock_irqrestore(&adapter
->mwifiex_lock
, flags
);
708 /* Notify completion */
709 ret
= mwifiex_shutdown_fw_complete(adapter
);
715 * This function downloads the firmware to the card.
717 * The actual download is preceded by two sanity checks -
718 * - Check if firmware is already running
719 * - Check if the interface is the winner to download the firmware
721 * ...and followed by another -
722 * - Check if the firmware is downloaded successfully
724 * After download is successfully completed, the host interrupts are enabled.
726 int mwifiex_dnld_fw(struct mwifiex_adapter
*adapter
,
727 struct mwifiex_fw_image
*pmfw
)
732 if (adapter
->if_ops
.check_fw_status
) {
735 /* check if firmware is already running */
736 ret
= adapter
->if_ops
.check_fw_status(adapter
, poll_num
);
738 dev_notice(adapter
->dev
,
739 "WLAN FW already running! Skip FW dnld\n");
743 poll_num
= MAX_FIRMWARE_POLL_TRIES
;
745 /* check if we are the winner for downloading FW */
746 if (!adapter
->winner
) {
747 dev_notice(adapter
->dev
,
748 "FW already running! Skip FW dnld\n");
749 poll_num
= MAX_MULTI_INTERFACE_POLL_TRIES
;
755 /* Download firmware with helper */
756 ret
= adapter
->if_ops
.prog_fw(adapter
, pmfw
);
758 dev_err(adapter
->dev
, "prog_fw failed ret=%#x\n", ret
);
764 /* Check if the firmware is downloaded successfully or not */
765 ret
= adapter
->if_ops
.check_fw_status(adapter
, poll_num
);
767 dev_err(adapter
->dev
, "FW failed to be active in time\n");
771 /* re-enable host interrupt for mwifiex after fw dnld is successful */
772 if (adapter
->if_ops
.enable_int
)
773 adapter
->if_ops
.enable_int(adapter
);