2 * Marvell Wireless LAN device driver: HW/FW Initialization
4 * Copyright (C) 2011-2014, 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
);
48 spin_lock_irqsave(&tbl
[priv
->bss_priority
].bss_prio_lock
, flags
);
49 list_add_tail(&bss_prio
->list
, &tbl
[priv
->bss_priority
].bss_prio_head
);
50 spin_unlock_irqrestore(&tbl
[priv
->bss_priority
].bss_prio_lock
, flags
);
55 static void wakeup_timer_fn(unsigned long data
)
57 struct mwifiex_adapter
*adapter
= (struct mwifiex_adapter
*)data
;
59 mwifiex_dbg(adapter
, ERROR
, "Firmware wakeup failed\n");
60 adapter
->hw_status
= MWIFIEX_HW_STATUS_RESET
;
61 mwifiex_cancel_all_pending_cmd(adapter
);
63 if (adapter
->if_ops
.card_reset
&& !adapter
->hs_activated
)
64 adapter
->if_ops
.card_reset(adapter
);
68 * This function initializes the private structure and sets default
69 * values to the members.
71 * Additionally, it also initializes all the locks and sets up all the
74 int mwifiex_init_priv(struct mwifiex_private
*priv
)
78 priv
->media_connected
= false;
79 eth_broadcast_addr(priv
->curr_addr
);
80 priv
->port_open
= false;
81 priv
->usb_port
= MWIFIEX_USB_EP_DATA
;
82 priv
->pkt_tx_ctrl
= 0;
83 priv
->bss_mode
= NL80211_IFTYPE_UNSPECIFIED
;
84 priv
->data_rate
= 0; /* Initially indicate the rate as auto */
85 priv
->is_data_rate_auto
= true;
86 priv
->bcn_avg_factor
= DEFAULT_BCN_AVG_FACTOR
;
87 priv
->data_avg_factor
= DEFAULT_DATA_AVG_FACTOR
;
89 priv
->sec_info
.wep_enabled
= 0;
90 priv
->sec_info
.authentication_mode
= NL80211_AUTHTYPE_OPEN_SYSTEM
;
91 priv
->sec_info
.encryption_mode
= 0;
92 for (i
= 0; i
< ARRAY_SIZE(priv
->wep_key
); i
++)
93 memset(&priv
->wep_key
[i
], 0, sizeof(struct mwifiex_wep_key
));
94 priv
->wep_key_curr_index
= 0;
95 priv
->curr_pkt_filter
= HostCmd_ACT_MAC_DYNAMIC_BW_ENABLE
|
96 HostCmd_ACT_MAC_RX_ON
| HostCmd_ACT_MAC_TX_ON
|
97 HostCmd_ACT_MAC_ETHERNETII_ENABLE
;
99 priv
->beacon_period
= 100; /* beacon interval */
100 priv
->attempted_bss_desc
= NULL
;
101 memset(&priv
->curr_bss_params
, 0, sizeof(priv
->curr_bss_params
));
102 priv
->listen_interval
= MWIFIEX_DEFAULT_LISTEN_INTERVAL
;
104 memset(&priv
->prev_ssid
, 0, sizeof(priv
->prev_ssid
));
105 memset(&priv
->prev_bssid
, 0, sizeof(priv
->prev_bssid
));
106 memset(&priv
->assoc_rsp_buf
, 0, sizeof(priv
->assoc_rsp_buf
));
107 priv
->assoc_rsp_size
= 0;
108 priv
->adhoc_channel
= DEFAULT_AD_HOC_CHANNEL
;
109 priv
->atim_window
= 0;
110 priv
->adhoc_state
= ADHOC_IDLE
;
111 priv
->tx_power_level
= 0;
112 priv
->max_tx_power_level
= 0;
113 priv
->min_tx_power_level
= 0;
117 priv
->rxpd_htinfo
= 0;
119 priv
->rate_bitmap
= 0;
120 priv
->data_rssi_last
= 0;
121 priv
->data_rssi_avg
= 0;
122 priv
->data_nf_avg
= 0;
123 priv
->data_nf_last
= 0;
124 priv
->bcn_rssi_last
= 0;
125 priv
->bcn_rssi_avg
= 0;
126 priv
->bcn_nf_avg
= 0;
127 priv
->bcn_nf_last
= 0;
128 memset(&priv
->wpa_ie
, 0, sizeof(priv
->wpa_ie
));
129 memset(&priv
->aes_key
, 0, sizeof(priv
->aes_key
));
130 priv
->wpa_ie_len
= 0;
131 priv
->wpa_is_gtk_set
= false;
133 memset(&priv
->assoc_tlv_buf
, 0, sizeof(priv
->assoc_tlv_buf
));
134 priv
->assoc_tlv_buf_len
= 0;
135 memset(&priv
->wps
, 0, sizeof(priv
->wps
));
136 memset(&priv
->gen_ie_buf
, 0, sizeof(priv
->gen_ie_buf
));
137 priv
->gen_ie_buf_len
= 0;
138 memset(priv
->vs_ie
, 0, sizeof(priv
->vs_ie
));
140 priv
->wmm_required
= true;
141 priv
->wmm_enabled
= false;
142 priv
->wmm_qosinfo
= 0;
143 priv
->curr_bcn_buf
= NULL
;
144 priv
->curr_bcn_size
= 0;
146 priv
->wps_ie_len
= 0;
147 priv
->ap_11n_enabled
= 0;
148 memset(&priv
->roc_cfg
, 0, sizeof(priv
->roc_cfg
));
150 priv
->scan_block
= false;
153 priv
->csa_expire_time
= 0;
154 priv
->del_list_idx
= 0;
155 priv
->hs2_enabled
= false;
156 priv
->check_tdls_tx
= false;
157 memcpy(priv
->tos_to_tid_inv
, tos_to_tid_inv
, MAX_NUM_TID
);
159 mwifiex_init_11h_params(priv
);
161 return mwifiex_add_bss_prio_tbl(priv
);
165 * This function allocates buffers for members of the adapter
168 * The memory allocated includes scan table, command buffers, and
169 * sleep confirm command buffer. In addition, the queues are
172 static int mwifiex_allocate_adapter(struct mwifiex_adapter
*adapter
)
176 /* Allocate command buffer */
177 ret
= mwifiex_alloc_cmd_buffer(adapter
);
179 mwifiex_dbg(adapter
, ERROR
,
180 "%s: failed to alloc cmd buffer\n",
186 dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm
)
189 if (!adapter
->sleep_cfm
) {
190 mwifiex_dbg(adapter
, ERROR
,
191 "%s: failed to alloc sleep cfm\t"
192 " cmd buffer\n", __func__
);
195 skb_reserve(adapter
->sleep_cfm
, INTF_HEADER_LEN
);
201 * This function initializes the adapter structure and sets default
202 * values to the members of adapter.
204 * This also initializes the WMM related parameters in the driver private
207 static void mwifiex_init_adapter(struct mwifiex_adapter
*adapter
)
209 struct mwifiex_opt_sleep_confirm
*sleep_cfm_buf
= NULL
;
211 skb_put(adapter
->sleep_cfm
, sizeof(struct mwifiex_opt_sleep_confirm
));
213 adapter
->cmd_sent
= false;
215 if (adapter
->iface_type
== MWIFIEX_SDIO
)
216 adapter
->data_sent
= true;
218 adapter
->data_sent
= false;
220 if (adapter
->iface_type
== MWIFIEX_USB
)
221 adapter
->intf_hdr_len
= 0;
223 adapter
->intf_hdr_len
= INTF_HEADER_LEN
;
225 adapter
->cmd_resp_received
= false;
226 adapter
->event_received
= false;
227 adapter
->data_received
= false;
229 adapter
->surprise_removed
= false;
231 adapter
->hw_status
= MWIFIEX_HW_STATUS_INITIALIZING
;
233 adapter
->ps_mode
= MWIFIEX_802_11_POWER_MODE_CAM
;
234 adapter
->ps_state
= PS_STATE_AWAKE
;
235 adapter
->need_to_wakeup
= false;
237 adapter
->scan_mode
= HostCmd_BSS_MODE_ANY
;
238 adapter
->specific_scan_time
= MWIFIEX_SPECIFIC_SCAN_CHAN_TIME
;
239 adapter
->active_scan_time
= MWIFIEX_ACTIVE_SCAN_CHAN_TIME
;
240 adapter
->passive_scan_time
= MWIFIEX_PASSIVE_SCAN_CHAN_TIME
;
241 adapter
->scan_chan_gap_time
= MWIFIEX_DEF_SCAN_CHAN_GAP_TIME
;
243 adapter
->scan_probes
= 1;
245 adapter
->multiple_dtim
= 1;
247 adapter
->local_listen_interval
= 0; /* default value in firmware
250 adapter
->is_deep_sleep
= false;
252 adapter
->delay_null_pkt
= false;
253 adapter
->delay_to_ps
= 1000;
254 adapter
->enhanced_ps_mode
= PS_MODE_AUTO
;
256 adapter
->gen_null_pkt
= false; /* Disable NULL Pkg generation by
258 adapter
->pps_uapsd_mode
= false; /* Disable pps/uapsd mode by
260 adapter
->pm_wakeup_card_req
= false;
262 adapter
->pm_wakeup_fw_try
= false;
264 adapter
->curr_tx_buf_size
= MWIFIEX_TX_DATA_BUF_SIZE_2K
;
266 adapter
->is_hs_configured
= false;
267 adapter
->hs_cfg
.conditions
= cpu_to_le32(HS_CFG_COND_DEF
);
268 adapter
->hs_cfg
.gpio
= HS_CFG_GPIO_DEF
;
269 adapter
->hs_cfg
.gap
= HS_CFG_GAP_DEF
;
270 adapter
->hs_activated
= false;
272 memset(adapter
->event_body
, 0, sizeof(adapter
->event_body
));
273 adapter
->hw_dot_11n_dev_cap
= 0;
274 adapter
->hw_dev_mcs_support
= 0;
275 adapter
->sec_chan_offset
= 0;
276 adapter
->adhoc_11n_enabled
= false;
278 mwifiex_wmm_init(adapter
);
279 atomic_set(&adapter
->tx_hw_pending
, 0);
281 sleep_cfm_buf
= (struct mwifiex_opt_sleep_confirm
*)
282 adapter
->sleep_cfm
->data
;
283 memset(sleep_cfm_buf
, 0, adapter
->sleep_cfm
->len
);
284 sleep_cfm_buf
->command
= cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH
);
285 sleep_cfm_buf
->size
= cpu_to_le16(adapter
->sleep_cfm
->len
);
286 sleep_cfm_buf
->result
= 0;
287 sleep_cfm_buf
->action
= cpu_to_le16(SLEEP_CONFIRM
);
288 sleep_cfm_buf
->resp_ctrl
= cpu_to_le16(RESP_NEEDED
);
290 memset(&adapter
->sleep_params
, 0, sizeof(adapter
->sleep_params
));
291 memset(&adapter
->sleep_period
, 0, sizeof(adapter
->sleep_period
));
292 adapter
->tx_lock_flag
= false;
293 adapter
->null_pkt_interval
= 0;
294 adapter
->fw_bands
= 0;
295 adapter
->config_bands
= 0;
296 adapter
->adhoc_start_band
= 0;
297 adapter
->scan_channels
= NULL
;
298 adapter
->fw_release_number
= 0;
299 adapter
->fw_cap_info
= 0;
300 memset(&adapter
->upld_buf
, 0, sizeof(adapter
->upld_buf
));
301 adapter
->event_cause
= 0;
302 adapter
->region_code
= 0;
303 adapter
->bcn_miss_time_out
= DEFAULT_BCN_MISS_TIMEOUT
;
304 adapter
->adhoc_awake_period
= 0;
305 memset(&adapter
->arp_filter
, 0, sizeof(adapter
->arp_filter
));
306 adapter
->arp_filter_size
= 0;
307 adapter
->max_mgmt_ie_index
= MAX_MGMT_IE_INDEX
;
308 adapter
->mfg_mode
= mfg_mode
;
309 adapter
->key_api_major_ver
= 0;
310 adapter
->key_api_minor_ver
= 0;
311 eth_broadcast_addr(adapter
->perm_addr
);
312 adapter
->iface_limit
.sta_intf
= MWIFIEX_MAX_STA_NUM
;
313 adapter
->iface_limit
.uap_intf
= MWIFIEX_MAX_UAP_NUM
;
314 adapter
->iface_limit
.p2p_intf
= MWIFIEX_MAX_P2P_NUM
;
315 adapter
->active_scan_triggered
= false;
316 setup_timer(&adapter
->wakeup_timer
, wakeup_timer_fn
,
317 (unsigned long)adapter
);
321 * This function sets trans_start per tx_queue
323 void mwifiex_set_trans_start(struct net_device
*dev
)
327 for (i
= 0; i
< dev
->num_tx_queues
; i
++)
328 netdev_get_tx_queue(dev
, i
)->trans_start
= jiffies
;
330 netif_trans_update(dev
);
334 * This function wakes up all queues in net_device
336 void mwifiex_wake_up_net_dev_queue(struct net_device
*netdev
,
337 struct mwifiex_adapter
*adapter
)
339 unsigned long dev_queue_flags
;
342 spin_lock_irqsave(&adapter
->queue_lock
, dev_queue_flags
);
344 for (i
= 0; i
< netdev
->num_tx_queues
; i
++) {
345 struct netdev_queue
*txq
= netdev_get_tx_queue(netdev
, i
);
347 if (netif_tx_queue_stopped(txq
))
348 netif_tx_wake_queue(txq
);
351 spin_unlock_irqrestore(&adapter
->queue_lock
, dev_queue_flags
);
355 * This function stops all queues in net_device
357 void mwifiex_stop_net_dev_queue(struct net_device
*netdev
,
358 struct mwifiex_adapter
*adapter
)
360 unsigned long dev_queue_flags
;
363 spin_lock_irqsave(&adapter
->queue_lock
, dev_queue_flags
);
365 for (i
= 0; i
< netdev
->num_tx_queues
; i
++) {
366 struct netdev_queue
*txq
= netdev_get_tx_queue(netdev
, i
);
368 if (!netif_tx_queue_stopped(txq
))
369 netif_tx_stop_queue(txq
);
372 spin_unlock_irqrestore(&adapter
->queue_lock
, dev_queue_flags
);
376 * This function invalidates the list heads.
378 static void mwifiex_invalidate_lists(struct mwifiex_adapter
*adapter
)
380 struct mwifiex_private
*priv
;
383 list_del(&adapter
->cmd_free_q
);
384 list_del(&adapter
->cmd_pending_q
);
385 list_del(&adapter
->scan_pending_q
);
387 for (i
= 0; i
< adapter
->priv_num
; i
++)
388 list_del(&adapter
->bss_prio_tbl
[i
].bss_prio_head
);
390 for (i
= 0; i
< adapter
->priv_num
; i
++) {
391 if (adapter
->priv
[i
]) {
392 priv
= adapter
->priv
[i
];
393 for (j
= 0; j
< MAX_NUM_TID
; ++j
)
394 list_del(&priv
->wmm
.tid_tbl_ptr
[j
].ra_list
);
395 list_del(&priv
->tx_ba_stream_tbl_ptr
);
396 list_del(&priv
->rx_reorder_tbl_ptr
);
397 list_del(&priv
->sta_list
);
398 list_del(&priv
->auto_tdls_list
);
404 * This function performs cleanup for adapter structure.
406 * The cleanup is done recursively, by canceling all pending
407 * commands, freeing the member buffers previously allocated
408 * (command buffers, scan table buffer, sleep confirm command
409 * buffer), stopping the timers and calling the cleanup routines
410 * for every interface.
413 mwifiex_adapter_cleanup(struct mwifiex_adapter
*adapter
)
415 del_timer(&adapter
->wakeup_timer
);
416 mwifiex_cancel_all_pending_cmd(adapter
);
417 wake_up_interruptible(&adapter
->cmd_wait_q
.wait
);
418 wake_up_interruptible(&adapter
->hs_activate_wait_q
);
421 void mwifiex_free_cmd_buffers(struct mwifiex_adapter
*adapter
)
423 mwifiex_invalidate_lists(adapter
);
425 /* Free command buffer */
426 mwifiex_dbg(adapter
, INFO
, "info: free cmd buffer\n");
427 mwifiex_free_cmd_buffer(adapter
);
429 if (adapter
->sleep_cfm
)
430 dev_kfree_skb_any(adapter
->sleep_cfm
);
434 * This function intializes the lock variables and
437 int mwifiex_init_lock_list(struct mwifiex_adapter
*adapter
)
439 struct mwifiex_private
*priv
;
442 spin_lock_init(&adapter
->int_lock
);
443 spin_lock_init(&adapter
->main_proc_lock
);
444 spin_lock_init(&adapter
->mwifiex_cmd_lock
);
445 spin_lock_init(&adapter
->queue_lock
);
446 for (i
= 0; i
< adapter
->priv_num
; i
++) {
447 if (adapter
->priv
[i
]) {
448 priv
= adapter
->priv
[i
];
449 spin_lock_init(&priv
->rx_pkt_lock
);
450 spin_lock_init(&priv
->wmm
.ra_list_spinlock
);
451 spin_lock_init(&priv
->curr_bcn_buf_lock
);
452 spin_lock_init(&priv
->sta_list_spinlock
);
453 spin_lock_init(&priv
->auto_tdls_lock
);
457 /* Initialize cmd_free_q */
458 INIT_LIST_HEAD(&adapter
->cmd_free_q
);
459 /* Initialize cmd_pending_q */
460 INIT_LIST_HEAD(&adapter
->cmd_pending_q
);
461 /* Initialize scan_pending_q */
462 INIT_LIST_HEAD(&adapter
->scan_pending_q
);
464 spin_lock_init(&adapter
->cmd_free_q_lock
);
465 spin_lock_init(&adapter
->cmd_pending_q_lock
);
466 spin_lock_init(&adapter
->scan_pending_q_lock
);
467 spin_lock_init(&adapter
->rx_proc_lock
);
469 skb_queue_head_init(&adapter
->rx_data_q
);
470 skb_queue_head_init(&adapter
->tx_data_q
);
472 for (i
= 0; i
< adapter
->priv_num
; ++i
) {
473 INIT_LIST_HEAD(&adapter
->bss_prio_tbl
[i
].bss_prio_head
);
474 spin_lock_init(&adapter
->bss_prio_tbl
[i
].bss_prio_lock
);
477 for (i
= 0; i
< adapter
->priv_num
; i
++) {
478 if (!adapter
->priv
[i
])
480 priv
= adapter
->priv
[i
];
481 for (j
= 0; j
< MAX_NUM_TID
; ++j
)
482 INIT_LIST_HEAD(&priv
->wmm
.tid_tbl_ptr
[j
].ra_list
);
483 INIT_LIST_HEAD(&priv
->tx_ba_stream_tbl_ptr
);
484 INIT_LIST_HEAD(&priv
->rx_reorder_tbl_ptr
);
485 INIT_LIST_HEAD(&priv
->sta_list
);
486 INIT_LIST_HEAD(&priv
->auto_tdls_list
);
487 skb_queue_head_init(&priv
->tdls_txq
);
488 skb_queue_head_init(&priv
->bypass_txq
);
490 spin_lock_init(&priv
->tx_ba_stream_tbl_lock
);
491 spin_lock_init(&priv
->rx_reorder_tbl_lock
);
493 spin_lock_init(&priv
->ack_status_lock
);
494 idr_init(&priv
->ack_status_frames
);
501 * This function initializes the firmware.
503 * The following operations are performed sequentially -
504 * - Allocate adapter structure
505 * - Initialize the adapter structure
506 * - Initialize the private structure
507 * - Add BSS priority tables to the adapter structure
508 * - For each interface, send the init commands to firmware
509 * - Send the first command in command pending queue, if available
511 int mwifiex_init_fw(struct mwifiex_adapter
*adapter
)
514 struct mwifiex_private
*priv
;
515 u8 i
, first_sta
= true;
516 int is_cmd_pend_q_empty
;
519 adapter
->hw_status
= MWIFIEX_HW_STATUS_INITIALIZING
;
521 /* Allocate memory for member of adapter structure */
522 ret
= mwifiex_allocate_adapter(adapter
);
526 /* Initialize adapter structure */
527 mwifiex_init_adapter(adapter
);
529 for (i
= 0; i
< adapter
->priv_num
; i
++) {
530 if (adapter
->priv
[i
]) {
531 priv
= adapter
->priv
[i
];
533 /* Initialize private structure */
534 ret
= mwifiex_init_priv(priv
);
539 if (adapter
->mfg_mode
) {
540 adapter
->hw_status
= MWIFIEX_HW_STATUS_READY
;
543 for (i
= 0; i
< adapter
->priv_num
; i
++) {
544 if (adapter
->priv
[i
]) {
545 ret
= mwifiex_sta_init_cmd(adapter
->priv
[i
],
558 spin_lock_irqsave(&adapter
->cmd_pending_q_lock
, flags
);
559 is_cmd_pend_q_empty
= list_empty(&adapter
->cmd_pending_q
);
560 spin_unlock_irqrestore(&adapter
->cmd_pending_q_lock
, flags
);
561 if (!is_cmd_pend_q_empty
) {
562 /* Send the first command in queue and return */
563 if (mwifiex_main_process(adapter
) != -1)
566 adapter
->hw_status
= MWIFIEX_HW_STATUS_READY
;
573 * This function deletes the BSS priority tables.
575 * The function traverses through all the allocated BSS priority nodes
576 * in every BSS priority table and frees them.
578 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private
*priv
)
581 struct mwifiex_adapter
*adapter
= priv
->adapter
;
582 struct mwifiex_bss_prio_node
*bssprio_node
, *tmp_node
;
583 struct list_head
*head
;
584 spinlock_t
*lock
; /* bss priority lock */
587 for (i
= 0; i
< adapter
->priv_num
; ++i
) {
588 head
= &adapter
->bss_prio_tbl
[i
].bss_prio_head
;
589 lock
= &adapter
->bss_prio_tbl
[i
].bss_prio_lock
;
590 mwifiex_dbg(adapter
, INFO
,
591 "info: delete BSS priority table,\t"
592 "bss_type = %d, bss_num = %d, i = %d,\t"
594 priv
->bss_type
, priv
->bss_num
, i
, head
);
597 spin_lock_irqsave(lock
, flags
);
598 if (list_empty(head
)) {
599 spin_unlock_irqrestore(lock
, flags
);
602 list_for_each_entry_safe(bssprio_node
, tmp_node
, head
,
604 if (bssprio_node
->priv
== priv
) {
605 mwifiex_dbg(adapter
, INFO
,
607 "node %p, next = %p\n",
608 bssprio_node
, tmp_node
);
609 list_del(&bssprio_node
->list
);
613 spin_unlock_irqrestore(lock
, flags
);
619 * This function frees the private structure, including cleans
620 * up the TX and RX queues and frees the BSS priority tables.
622 void mwifiex_free_priv(struct mwifiex_private
*priv
)
624 mwifiex_clean_txrx(priv
);
625 mwifiex_delete_bss_prio_tbl(priv
);
626 mwifiex_free_curr_bcn(priv
);
630 * This function is used to shutdown the driver.
632 * The following operations are performed sequentially -
633 * - Check if already shut down
634 * - Make sure the main process has stopped
635 * - Clean up the Tx and Rx queues
636 * - Delete BSS priority tables
638 * - Notify completion
641 mwifiex_shutdown_drv(struct mwifiex_adapter
*adapter
)
643 struct mwifiex_private
*priv
;
648 /* mwifiex already shutdown */
649 if (adapter
->hw_status
== MWIFIEX_HW_STATUS_NOT_READY
)
652 /* cancel current command */
653 if (adapter
->curr_cmd
) {
654 mwifiex_dbg(adapter
, WARN
,
655 "curr_cmd is still in processing\n");
656 del_timer_sync(&adapter
->cmd_timer
);
657 mwifiex_recycle_cmd_node(adapter
, adapter
->curr_cmd
);
658 adapter
->curr_cmd
= NULL
;
661 /* shut down mwifiex */
662 mwifiex_dbg(adapter
, MSG
,
663 "info: shutdown mwifiex...\n");
665 /* Clean up Tx/Rx queues and delete BSS priority table */
666 for (i
= 0; i
< adapter
->priv_num
; i
++) {
667 if (adapter
->priv
[i
]) {
668 priv
= adapter
->priv
[i
];
670 mwifiex_clean_auto_tdls(priv
);
671 mwifiex_abort_cac(priv
);
672 mwifiex_free_priv(priv
);
676 atomic_set(&adapter
->tx_queued
, 0);
677 while ((skb
= skb_dequeue(&adapter
->tx_data_q
)))
678 mwifiex_write_data_complete(adapter
, skb
, 0, 0);
680 spin_lock_irqsave(&adapter
->rx_proc_lock
, flags
);
682 while ((skb
= skb_dequeue(&adapter
->rx_data_q
))) {
683 struct mwifiex_rxinfo
*rx_info
= MWIFIEX_SKB_RXCB(skb
);
685 atomic_dec(&adapter
->rx_pending
);
686 priv
= adapter
->priv
[rx_info
->bss_num
];
688 priv
->stats
.rx_dropped
++;
690 dev_kfree_skb_any(skb
);
693 spin_unlock_irqrestore(&adapter
->rx_proc_lock
, flags
);
695 mwifiex_adapter_cleanup(adapter
);
697 adapter
->hw_status
= MWIFIEX_HW_STATUS_NOT_READY
;
701 * This function downloads the firmware to the card.
703 * The actual download is preceded by two sanity checks -
704 * - Check if firmware is already running
705 * - Check if the interface is the winner to download the firmware
707 * ...and followed by another -
708 * - Check if the firmware is downloaded successfully
710 * After download is successfully completed, the host interrupts are enabled.
712 int mwifiex_dnld_fw(struct mwifiex_adapter
*adapter
,
713 struct mwifiex_fw_image
*pmfw
)
718 if (adapter
->if_ops
.check_fw_status
) {
719 /* check if firmware is already running */
720 ret
= adapter
->if_ops
.check_fw_status(adapter
, poll_num
);
722 mwifiex_dbg(adapter
, MSG
,
723 "WLAN FW already running! Skip FW dnld\n");
728 /* check if we are the winner for downloading FW */
729 if (adapter
->if_ops
.check_winner_status
) {
731 ret
= adapter
->if_ops
.check_winner_status(adapter
);
733 poll_num
= MAX_FIRMWARE_POLL_TRIES
;
735 mwifiex_dbg(adapter
, MSG
,
736 "WLAN read winner status failed!\n");
740 if (!adapter
->winner
) {
741 mwifiex_dbg(adapter
, MSG
,
742 "WLAN is not the winner! Skip FW dnld\n");
748 /* Download firmware with helper */
749 ret
= adapter
->if_ops
.prog_fw(adapter
, pmfw
);
751 mwifiex_dbg(adapter
, ERROR
,
752 "prog_fw failed ret=%#x\n", ret
);
758 /* Check if the firmware is downloaded successfully or not */
759 ret
= adapter
->if_ops
.check_fw_status(adapter
, poll_num
);
761 mwifiex_dbg(adapter
, ERROR
,
762 "FW failed to be active in time\n");
766 EXPORT_SYMBOL_GPL(mwifiex_dnld_fw
);