1 /*
2 * NXP Wireless LAN device driver: HW/FW Initialization
3 *
4 * Copyright 2011-2020 NXP
5 *
6 * This software file (the "File") is distributed by NXP
7 * 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.
13 *
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.
18 */
19
20 #include "decl.h"
21 #include "ioctl.h"
22 #include "util.h"
23 #include "fw.h"
24 #include "main.h"
25 #include "wmm.h"
26 #include "11n.h"
27
28 /*
29 * This function adds a BSS priority table to the table list.
30 *
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.
33 */
mwifiex_add_bss_prio_tbl(struct mwifiex_private * priv)34 static int mwifiex_add_bss_prio_tbl(struct mwifiex_private *priv)
35 {
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;
39
40 bss_prio = kzalloc(sizeof(struct mwifiex_bss_prio_node), GFP_KERNEL);
41 if (!bss_prio)
42 return -ENOMEM;
43
44 bss_prio->priv = priv;
45 INIT_LIST_HEAD(&bss_prio->list);
46
47 spin_lock_bh(&tbl[priv->bss_priority].bss_prio_lock);
48 list_add_tail(&bss_prio->list, &tbl[priv->bss_priority].bss_prio_head);
49 spin_unlock_bh(&tbl[priv->bss_priority].bss_prio_lock);
50
51 return 0;
52 }
53
wakeup_timer_fn(struct timer_list * t)54 static void wakeup_timer_fn(struct timer_list *t)
55 {
56 struct mwifiex_adapter *adapter = from_timer(adapter, t, wakeup_timer);
57
58 mwifiex_dbg(adapter, ERROR, "Firmware wakeup failed\n");
59 adapter->hw_status = MWIFIEX_HW_STATUS_RESET;
60 mwifiex_cancel_all_pending_cmd(adapter);
61
62 if (adapter->if_ops.card_reset)
63 adapter->if_ops.card_reset(adapter);
64 }
65
fw_dump_timer_fn(struct timer_list * t)66 static void fw_dump_timer_fn(struct timer_list *t)
67 {
68 struct mwifiex_adapter *adapter = from_timer(adapter, t, devdump_timer);
69
70 mwifiex_upload_device_dump(adapter);
71 }
72
73 /*
74 * This function initializes the private structure and sets default
75 * values to the members.
76 *
77 * Additionally, it also initializes all the locks and sets up all the
78 * lists.
79 */
mwifiex_init_priv(struct mwifiex_private * priv)80 int mwifiex_init_priv(struct mwifiex_private *priv)
81 {
82 u32 i;
83
84 priv->media_connected = false;
85 eth_broadcast_addr(priv->curr_addr);
86 priv->port_open = false;
87 priv->usb_port = MWIFIEX_USB_EP_DATA;
88 priv->pkt_tx_ctrl = 0;
89 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
90 priv->data_rate = 0; /* Initially indicate the rate as auto */
91 priv->is_data_rate_auto = true;
92 priv->bcn_avg_factor = DEFAULT_BCN_AVG_FACTOR;
93 priv->data_avg_factor = DEFAULT_DATA_AVG_FACTOR;
94
95 priv->sec_info.wep_enabled = 0;
96 priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
97 priv->sec_info.encryption_mode = 0;
98 for (i = 0; i < ARRAY_SIZE(priv->wep_key); i++)
99 memset(&priv->wep_key[i], 0, sizeof(struct mwifiex_wep_key));
100 priv->wep_key_curr_index = 0;
101 priv->curr_pkt_filter = HostCmd_ACT_MAC_DYNAMIC_BW_ENABLE |
102 HostCmd_ACT_MAC_RX_ON | HostCmd_ACT_MAC_TX_ON |
103 HostCmd_ACT_MAC_ETHERNETII_ENABLE;
104
105 priv->beacon_period = 100; /* beacon interval */
106 priv->attempted_bss_desc = NULL;
107 memset(&priv->curr_bss_params, 0, sizeof(priv->curr_bss_params));
108 priv->listen_interval = MWIFIEX_DEFAULT_LISTEN_INTERVAL;
109
110 memset(&priv->prev_ssid, 0, sizeof(priv->prev_ssid));
111 memset(&priv->prev_bssid, 0, sizeof(priv->prev_bssid));
112 memset(&priv->assoc_rsp_buf, 0, sizeof(priv->assoc_rsp_buf));
113 priv->assoc_rsp_size = 0;
114 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
115 priv->atim_window = 0;
116 priv->adhoc_state = ADHOC_IDLE;
117 priv->tx_power_level = 0;
118 priv->max_tx_power_level = 0;
119 priv->min_tx_power_level = 0;
120 priv->tx_ant = 0;
121 priv->rx_ant = 0;
122 priv->tx_rate = 0;
123 priv->rxpd_htinfo = 0;
124 priv->rxpd_rate = 0;
125 priv->rate_bitmap = 0;
126 priv->data_rssi_last = 0;
127 priv->data_rssi_avg = 0;
128 priv->data_nf_avg = 0;
129 priv->data_nf_last = 0;
130 priv->bcn_rssi_last = 0;
131 priv->bcn_rssi_avg = 0;
132 priv->bcn_nf_avg = 0;
133 priv->bcn_nf_last = 0;
134 memset(&priv->wpa_ie, 0, sizeof(priv->wpa_ie));
135 memset(&priv->aes_key, 0, sizeof(priv->aes_key));
136 priv->wpa_ie_len = 0;
137 priv->wpa_is_gtk_set = false;
138
139 memset(&priv->assoc_tlv_buf, 0, sizeof(priv->assoc_tlv_buf));
140 priv->assoc_tlv_buf_len = 0;
141 memset(&priv->wps, 0, sizeof(priv->wps));
142 memset(&priv->gen_ie_buf, 0, sizeof(priv->gen_ie_buf));
143 priv->gen_ie_buf_len = 0;
144 memset(priv->vs_ie, 0, sizeof(priv->vs_ie));
145
146 priv->wmm_required = true;
147 priv->wmm_enabled = false;
148 priv->wmm_qosinfo = 0;
149 priv->curr_bcn_buf = NULL;
150 priv->curr_bcn_size = 0;
151 priv->wps_ie = NULL;
152 priv->wps_ie_len = 0;
153 priv->ap_11n_enabled = 0;
154 memset(&priv->roc_cfg, 0, sizeof(priv->roc_cfg));
155
156 priv->scan_block = false;
157
158 priv->csa_chan = 0;
159 priv->csa_expire_time = 0;
160 priv->del_list_idx = 0;
161 priv->hs2_enabled = false;
162 priv->check_tdls_tx = false;
163 memcpy(priv->tos_to_tid_inv, tos_to_tid_inv, MAX_NUM_TID);
164
165 mwifiex_init_11h_params(priv);
166
167 return mwifiex_add_bss_prio_tbl(priv);
168 }
169
170 /*
171 * This function allocates buffers for members of the adapter
172 * structure.
173 *
174 * The memory allocated includes scan table, command buffers, and
175 * sleep confirm command buffer. In addition, the queues are
176 * also initialized.
177 */
mwifiex_allocate_adapter(struct mwifiex_adapter * adapter)178 static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter)
179 {
180 int ret;
181
182 /* Allocate command buffer */
183 ret = mwifiex_alloc_cmd_buffer(adapter);
184 if (ret) {
185 mwifiex_dbg(adapter, ERROR,
186 "%s: failed to alloc cmd buffer\n",
187 __func__);
188 return -1;
189 }
190
191 adapter->sleep_cfm =
192 dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm)
193 + INTF_HEADER_LEN);
194
195 if (!adapter->sleep_cfm) {
196 mwifiex_dbg(adapter, ERROR,
197 "%s: failed to alloc sleep cfm\t"
198 " cmd buffer\n", __func__);
199 return -1;
200 }
201 skb_reserve(adapter->sleep_cfm, INTF_HEADER_LEN);
202
203 return 0;
204 }
205
206 /*
207 * This function initializes the adapter structure and sets default
208 * values to the members of adapter.
209 *
210 * This also initializes the WMM related parameters in the driver private
211 * structures.
212 */
mwifiex_init_adapter(struct mwifiex_adapter * adapter)213 static void mwifiex_init_adapter(struct mwifiex_adapter *adapter)
214 {
215 struct mwifiex_opt_sleep_confirm *sleep_cfm_buf = NULL;
216
217 skb_put(adapter->sleep_cfm, sizeof(struct mwifiex_opt_sleep_confirm));
218
219 adapter->cmd_sent = false;
220
221 if (adapter->iface_type == MWIFIEX_SDIO)
222 adapter->data_sent = true;
223 else
224 adapter->data_sent = false;
225
226 if (adapter->iface_type == MWIFIEX_USB)
227 adapter->intf_hdr_len = 0;
228 else
229 adapter->intf_hdr_len = INTF_HEADER_LEN;
230
231 adapter->cmd_resp_received = false;
232 adapter->event_received = false;
233 adapter->data_received = false;
234
235 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
236
237 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
238
239 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
240 adapter->ps_state = PS_STATE_AWAKE;
241 adapter->need_to_wakeup = false;
242
243 adapter->scan_mode = HostCmd_BSS_MODE_ANY;
244 adapter->specific_scan_time = MWIFIEX_SPECIFIC_SCAN_CHAN_TIME;
245 adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME;
246 adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME;
247 adapter->scan_chan_gap_time = MWIFIEX_DEF_SCAN_CHAN_GAP_TIME;
248
249 adapter->scan_probes = 1;
250
251 adapter->multiple_dtim = 1;
252
253 adapter->local_listen_interval = 0; /* default value in firmware
254 will be used */
255
256 adapter->is_deep_sleep = false;
257
258 adapter->delay_null_pkt = false;
259 adapter->delay_to_ps = 1000;
260 adapter->enhanced_ps_mode = PS_MODE_AUTO;
261
262 adapter->gen_null_pkt = false; /* Disable NULL Pkg generation by
263 default */
264 adapter->pps_uapsd_mode = false; /* Disable pps/uapsd mode by
265 default */
266 adapter->pm_wakeup_card_req = false;
267
268 adapter->pm_wakeup_fw_try = false;
269
270 adapter->curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
271
272 clear_bit(MWIFIEX_IS_HS_CONFIGURED, &adapter->work_flags);
273 adapter->hs_cfg.conditions = cpu_to_le32(HS_CFG_COND_DEF);
274 adapter->hs_cfg.gpio = HS_CFG_GPIO_DEF;
275 adapter->hs_cfg.gap = HS_CFG_GAP_DEF;
276 adapter->hs_activated = false;
277
278 memset(adapter->event_body, 0, sizeof(adapter->event_body));
279 adapter->hw_dot_11n_dev_cap = 0;
280 adapter->hw_dev_mcs_support = 0;
281 adapter->sec_chan_offset = 0;
282 adapter->adhoc_11n_enabled = false;
283
284 mwifiex_wmm_init(adapter);
285 atomic_set(&adapter->tx_hw_pending, 0);
286
287 sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *)
288 adapter->sleep_cfm->data;
289 memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len);
290 sleep_cfm_buf->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH);
291 sleep_cfm_buf->size = cpu_to_le16(adapter->sleep_cfm->len);
292 sleep_cfm_buf->result = 0;
293 sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM);
294 sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED);
295
296 memset(&adapter->sleep_params, 0, sizeof(adapter->sleep_params));
297 memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period));
298 adapter->tx_lock_flag = false;
299 adapter->null_pkt_interval = 0;
300 adapter->fw_bands = 0;
301 adapter->config_bands = 0;
302 adapter->adhoc_start_band = 0;
303 adapter->scan_channels = NULL;
304 adapter->fw_release_number = 0;
305 adapter->fw_cap_info = 0;
306 memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf));
307 adapter->event_cause = 0;
308 adapter->region_code = 0;
309 adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT;
310 adapter->adhoc_awake_period = 0;
311 memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter));
312 adapter->arp_filter_size = 0;
313 adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX;
314 adapter->mfg_mode = mfg_mode;
315 adapter->key_api_major_ver = 0;
316 adapter->key_api_minor_ver = 0;
317 eth_broadcast_addr(adapter->perm_addr);
318 adapter->iface_limit.sta_intf = MWIFIEX_MAX_STA_NUM;
319 adapter->iface_limit.uap_intf = MWIFIEX_MAX_UAP_NUM;
320 adapter->iface_limit.p2p_intf = MWIFIEX_MAX_P2P_NUM;
321 adapter->active_scan_triggered = false;
322 timer_setup(&adapter->wakeup_timer, wakeup_timer_fn, 0);
323 adapter->devdump_len = 0;
324 timer_setup(&adapter->devdump_timer, fw_dump_timer_fn, 0);
325 }
326
327 /*
328 * This function sets trans_start per tx_queue
329 */
mwifiex_set_trans_start(struct net_device * dev)330 void mwifiex_set_trans_start(struct net_device *dev)
331 {
332 int i;
333
334 for (i = 0; i < dev->num_tx_queues; i++)
335 netdev_get_tx_queue(dev, i)->trans_start = jiffies;
336
337 netif_trans_update(dev);
338 }
339
340 /*
341 * This function wakes up all queues in net_device
342 */
mwifiex_wake_up_net_dev_queue(struct net_device * netdev,struct mwifiex_adapter * adapter)343 void mwifiex_wake_up_net_dev_queue(struct net_device *netdev,
344 struct mwifiex_adapter *adapter)
345 {
346 spin_lock_bh(&adapter->queue_lock);
347 netif_tx_wake_all_queues(netdev);
348 spin_unlock_bh(&adapter->queue_lock);
349 }
350
351 /*
352 * This function stops all queues in net_device
353 */
mwifiex_stop_net_dev_queue(struct net_device * netdev,struct mwifiex_adapter * adapter)354 void mwifiex_stop_net_dev_queue(struct net_device *netdev,
355 struct mwifiex_adapter *adapter)
356 {
357 spin_lock_bh(&adapter->queue_lock);
358 netif_tx_stop_all_queues(netdev);
359 spin_unlock_bh(&adapter->queue_lock);
360 }
361
362 /*
363 * This function invalidates the list heads.
364 */
mwifiex_invalidate_lists(struct mwifiex_adapter * adapter)365 static void mwifiex_invalidate_lists(struct mwifiex_adapter *adapter)
366 {
367 struct mwifiex_private *priv;
368 s32 i, j;
369
370 list_del(&adapter->cmd_free_q);
371 list_del(&adapter->cmd_pending_q);
372 list_del(&adapter->scan_pending_q);
373
374 for (i = 0; i < adapter->priv_num; i++)
375 list_del(&adapter->bss_prio_tbl[i].bss_prio_head);
376
377 for (i = 0; i < adapter->priv_num; i++) {
378 if (adapter->priv[i]) {
379 priv = adapter->priv[i];
380 for (j = 0; j < MAX_NUM_TID; ++j)
381 list_del(&priv->wmm.tid_tbl_ptr[j].ra_list);
382 list_del(&priv->tx_ba_stream_tbl_ptr);
383 list_del(&priv->rx_reorder_tbl_ptr);
384 list_del(&priv->sta_list);
385 list_del(&priv->auto_tdls_list);
386 }
387 }
388 }
389
390 /*
391 * This function performs cleanup for adapter structure.
392 *
393 * The cleanup is done recursively, by canceling all pending
394 * commands, freeing the member buffers previously allocated
395 * (command buffers, scan table buffer, sleep confirm command
396 * buffer), stopping the timers and calling the cleanup routines
397 * for every interface.
398 */
399 static void
mwifiex_adapter_cleanup(struct mwifiex_adapter * adapter)400 mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter)
401 {
402 del_timer(&adapter->wakeup_timer);
403 del_timer_sync(&adapter->devdump_timer);
404 mwifiex_cancel_all_pending_cmd(adapter);
405 wake_up_interruptible(&adapter->cmd_wait_q.wait);
406 wake_up_interruptible(&adapter->hs_activate_wait_q);
407 }
408
mwifiex_free_cmd_buffers(struct mwifiex_adapter * adapter)409 void mwifiex_free_cmd_buffers(struct mwifiex_adapter *adapter)
410 {
411 mwifiex_invalidate_lists(adapter);
412
413 /* Free command buffer */
414 mwifiex_dbg(adapter, INFO, "info: free cmd buffer\n");
415 mwifiex_free_cmd_buffer(adapter);
416
417 if (adapter->sleep_cfm)
418 dev_kfree_skb_any(adapter->sleep_cfm);
419 }
420
421 /*
422 * This function intializes the lock variables and
423 * the list heads.
424 */
mwifiex_init_lock_list(struct mwifiex_adapter * adapter)425 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter)
426 {
427 struct mwifiex_private *priv;
428 s32 i, j;
429
430 spin_lock_init(&adapter->int_lock);
431 spin_lock_init(&adapter->main_proc_lock);
432 spin_lock_init(&adapter->mwifiex_cmd_lock);
433 spin_lock_init(&adapter->queue_lock);
434 for (i = 0; i < adapter->priv_num; i++) {
435 if (adapter->priv[i]) {
436 priv = adapter->priv[i];
437 spin_lock_init(&priv->wmm.ra_list_spinlock);
438 spin_lock_init(&priv->curr_bcn_buf_lock);
439 spin_lock_init(&priv->sta_list_spinlock);
440 spin_lock_init(&priv->auto_tdls_lock);
441 }
442 }
443
444 /* Initialize cmd_free_q */
445 INIT_LIST_HEAD(&adapter->cmd_free_q);
446 /* Initialize cmd_pending_q */
447 INIT_LIST_HEAD(&adapter->cmd_pending_q);
448 /* Initialize scan_pending_q */
449 INIT_LIST_HEAD(&adapter->scan_pending_q);
450
451 spin_lock_init(&adapter->cmd_free_q_lock);
452 spin_lock_init(&adapter->cmd_pending_q_lock);
453 spin_lock_init(&adapter->scan_pending_q_lock);
454 spin_lock_init(&adapter->rx_proc_lock);
455
456 skb_queue_head_init(&adapter->rx_data_q);
457 skb_queue_head_init(&adapter->tx_data_q);
458
459 for (i = 0; i < adapter->priv_num; ++i) {
460 INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head);
461 spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock);
462 }
463
464 for (i = 0; i < adapter->priv_num; i++) {
465 if (!adapter->priv[i])
466 continue;
467 priv = adapter->priv[i];
468 for (j = 0; j < MAX_NUM_TID; ++j)
469 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list);
470 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr);
471 INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr);
472 INIT_LIST_HEAD(&priv->sta_list);
473 INIT_LIST_HEAD(&priv->auto_tdls_list);
474 skb_queue_head_init(&priv->tdls_txq);
475 skb_queue_head_init(&priv->bypass_txq);
476
477 spin_lock_init(&priv->tx_ba_stream_tbl_lock);
478 spin_lock_init(&priv->rx_reorder_tbl_lock);
479
480 spin_lock_init(&priv->ack_status_lock);
481 idr_init(&priv->ack_status_frames);
482 }
483
484 return 0;
485 }
486
487 /*
488 * This function initializes the firmware.
489 *
490 * The following operations are performed sequentially -
491 * - Allocate adapter structure
492 * - Initialize the adapter structure
493 * - Initialize the private structure
494 * - Add BSS priority tables to the adapter structure
495 * - For each interface, send the init commands to firmware
496 * - Send the first command in command pending queue, if available
497 */
mwifiex_init_fw(struct mwifiex_adapter * adapter)498 int mwifiex_init_fw(struct mwifiex_adapter *adapter)
499 {
500 int ret;
501 struct mwifiex_private *priv;
502 u8 i, first_sta = true;
503 int is_cmd_pend_q_empty;
504
505 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
506
507 /* Allocate memory for member of adapter structure */
508 ret = mwifiex_allocate_adapter(adapter);
509 if (ret)
510 return -1;
511
512 /* Initialize adapter structure */
513 mwifiex_init_adapter(adapter);
514
515 for (i = 0; i < adapter->priv_num; i++) {
516 if (adapter->priv[i]) {
517 priv = adapter->priv[i];
518
519 /* Initialize private structure */
520 ret = mwifiex_init_priv(priv);
521 if (ret)
522 return -1;
523 }
524 }
525 if (adapter->mfg_mode) {
526 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
527 ret = -EINPROGRESS;
528 } else {
529 for (i = 0; i < adapter->priv_num; i++) {
530 if (adapter->priv[i]) {
531 ret = mwifiex_sta_init_cmd(adapter->priv[i],
532 first_sta, true);
533 if (ret == -1)
534 return -1;
535
536 first_sta = false;
537 }
538
539
540
541 }
542 }
543
544 spin_lock_bh(&adapter->cmd_pending_q_lock);
545 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
546 spin_unlock_bh(&adapter->cmd_pending_q_lock);
547 if (!is_cmd_pend_q_empty) {
548 /* Send the first command in queue and return */
549 if (mwifiex_main_process(adapter) != -1)
550 ret = -EINPROGRESS;
551 } else {
552 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
553 }
554
555 return ret;
556 }
557
558 /*
559 * This function deletes the BSS priority tables.
560 *
561 * The function traverses through all the allocated BSS priority nodes
562 * in every BSS priority table and frees them.
563 */
mwifiex_delete_bss_prio_tbl(struct mwifiex_private * priv)564 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv)
565 {
566 int i;
567 struct mwifiex_adapter *adapter = priv->adapter;
568 struct mwifiex_bss_prio_node *bssprio_node, *tmp_node;
569 struct list_head *head;
570 spinlock_t *lock; /* bss priority lock */
571
572 for (i = 0; i < adapter->priv_num; ++i) {
573 head = &adapter->bss_prio_tbl[i].bss_prio_head;
574 lock = &adapter->bss_prio_tbl[i].bss_prio_lock;
575 mwifiex_dbg(adapter, INFO,
576 "info: delete BSS priority table,\t"
577 "bss_type = %d, bss_num = %d, i = %d,\t"
578 "head = %p\n",
579 priv->bss_type, priv->bss_num, i, head);
580
581 {
582 spin_lock_bh(lock);
583 list_for_each_entry_safe(bssprio_node, tmp_node, head,
584 list) {
585 if (bssprio_node->priv == priv) {
586 mwifiex_dbg(adapter, INFO,
587 "info: Delete\t"
588 "node %p, next = %p\n",
589 bssprio_node, tmp_node);
590 list_del(&bssprio_node->list);
591 kfree(bssprio_node);
592 }
593 }
594 spin_unlock_bh(lock);
595 }
596 }
597 }
598
599 /*
600 * This function frees the private structure, including cleans
601 * up the TX and RX queues and frees the BSS priority tables.
602 */
mwifiex_free_priv(struct mwifiex_private * priv)603 void mwifiex_free_priv(struct mwifiex_private *priv)
604 {
605 mwifiex_clean_txrx(priv);
606 mwifiex_delete_bss_prio_tbl(priv);
607 mwifiex_free_curr_bcn(priv);
608 }
609
610 /*
611 * This function is used to shutdown the driver.
612 *
613 * The following operations are performed sequentially -
614 * - Check if already shut down
615 * - Make sure the main process has stopped
616 * - Clean up the Tx and Rx queues
617 * - Delete BSS priority tables
618 * - Free the adapter
619 * - Notify completion
620 */
621 void
mwifiex_shutdown_drv(struct mwifiex_adapter * adapter)622 mwifiex_shutdown_drv(struct mwifiex_adapter *adapter)
623 {
624 struct mwifiex_private *priv;
625 s32 i;
626 struct sk_buff *skb;
627
628 /* mwifiex already shutdown */
629 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
630 return;
631
632 /* cancel current command */
633 if (adapter->curr_cmd) {
634 mwifiex_dbg(adapter, WARN,
635 "curr_cmd is still in processing\n");
636 del_timer_sync(&adapter->cmd_timer);
637 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd);
638 adapter->curr_cmd = NULL;
639 }
640
641 /* shut down mwifiex */
642 mwifiex_dbg(adapter, MSG,
643 "info: shutdown mwifiex...\n");
644
645 /* Clean up Tx/Rx queues and delete BSS priority table */
646 for (i = 0; i < adapter->priv_num; i++) {
647 if (adapter->priv[i]) {
648 priv = adapter->priv[i];
649
650 mwifiex_clean_auto_tdls(priv);
651 mwifiex_abort_cac(priv);
652 mwifiex_free_priv(priv);
653 }
654 }
655
656 atomic_set(&adapter->tx_queued, 0);
657 while ((skb = skb_dequeue(&adapter->tx_data_q)))
658 mwifiex_write_data_complete(adapter, skb, 0, 0);
659
660 spin_lock_bh(&adapter->rx_proc_lock);
661
662 while ((skb = skb_dequeue(&adapter->rx_data_q))) {
663 struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb);
664
665 atomic_dec(&adapter->rx_pending);
666 priv = adapter->priv[rx_info->bss_num];
667 if (priv)
668 priv->stats.rx_dropped++;
669
670 dev_kfree_skb_any(skb);
671 }
672
673 spin_unlock_bh(&adapter->rx_proc_lock);
674
675 mwifiex_adapter_cleanup(adapter);
676
677 adapter->hw_status = MWIFIEX_HW_STATUS_NOT_READY;
678 }
679
680 /*
681 * This function downloads the firmware to the card.
682 *
683 * The actual download is preceded by two sanity checks -
684 * - Check if firmware is already running
685 * - Check if the interface is the winner to download the firmware
686 *
687 * ...and followed by another -
688 * - Check if the firmware is downloaded successfully
689 *
690 * After download is successfully completed, the host interrupts are enabled.
691 */
mwifiex_dnld_fw(struct mwifiex_adapter * adapter,struct mwifiex_fw_image * pmfw)692 int mwifiex_dnld_fw(struct mwifiex_adapter *adapter,
693 struct mwifiex_fw_image *pmfw)
694 {
695 int ret;
696 u32 poll_num = 1;
697
698 /* check if firmware is already running */
699 ret = adapter->if_ops.check_fw_status(adapter, poll_num);
700 if (!ret) {
701 mwifiex_dbg(adapter, MSG,
702 "WLAN FW already running! Skip FW dnld\n");
703 return 0;
704 }
705
706 /* check if we are the winner for downloading FW */
707 if (adapter->if_ops.check_winner_status) {
708 adapter->winner = 0;
709 ret = adapter->if_ops.check_winner_status(adapter);
710
711 poll_num = MAX_FIRMWARE_POLL_TRIES;
712 if (ret) {
713 mwifiex_dbg(adapter, MSG,
714 "WLAN read winner status failed!\n");
715 return ret;
716 }
717
718 if (!adapter->winner) {
719 mwifiex_dbg(adapter, MSG,
720 "WLAN is not the winner! Skip FW dnld\n");
721 goto poll_fw;
722 }
723 }
724
725 if (pmfw) {
726 /* Download firmware with helper */
727 ret = adapter->if_ops.prog_fw(adapter, pmfw);
728 if (ret) {
729 mwifiex_dbg(adapter, ERROR,
730 "prog_fw failed ret=%#x\n", ret);
731 return ret;
732 }
733 }
734
735 poll_fw:
736 /* Check if the firmware is downloaded successfully or not */
737 ret = adapter->if_ops.check_fw_status(adapter, poll_num);
738 if (ret)
739 mwifiex_dbg(adapter, ERROR,
740 "FW failed to be active in time\n");
741
742 return ret;
743 }
744 EXPORT_SYMBOL_GPL(mwifiex_dnld_fw);
745
