1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * NXP Wireless LAN device driver: HW/FW Initialization
4 *
5 * Copyright 2011-2020 NXP
6 */
7
8 #include "decl.h"
9 #include "ioctl.h"
10 #include "util.h"
11 #include "fw.h"
12 #include "main.h"
13 #include "wmm.h"
14 #include "11n.h"
15
16 /*
17 * This function adds a BSS priority table to the table list.
18 *
19 * The function allocates a new BSS priority table node and adds it to
20 * the end of BSS priority table list, kept in driver memory.
21 */
mwifiex_add_bss_prio_tbl(struct mwifiex_private * priv)22 static int mwifiex_add_bss_prio_tbl(struct mwifiex_private *priv)
23 {
24 struct mwifiex_adapter *adapter = priv->adapter;
25 struct mwifiex_bss_prio_node *bss_prio;
26 struct mwifiex_bss_prio_tbl *tbl = adapter->bss_prio_tbl;
27
28 bss_prio = kzalloc(sizeof(struct mwifiex_bss_prio_node), GFP_KERNEL);
29 if (!bss_prio)
30 return -ENOMEM;
31
32 bss_prio->priv = priv;
33 INIT_LIST_HEAD(&bss_prio->list);
34
35 spin_lock_bh(&tbl[priv->bss_priority].bss_prio_lock);
36 list_add_tail(&bss_prio->list, &tbl[priv->bss_priority].bss_prio_head);
37 spin_unlock_bh(&tbl[priv->bss_priority].bss_prio_lock);
38
39 return 0;
40 }
41
wakeup_timer_fn(struct timer_list * t)42 static void wakeup_timer_fn(struct timer_list *t)
43 {
44 struct mwifiex_adapter *adapter = from_timer(adapter, t, wakeup_timer);
45
46 mwifiex_dbg(adapter, ERROR, "Firmware wakeup failed\n");
47 adapter->hw_status = MWIFIEX_HW_STATUS_RESET;
48 mwifiex_cancel_all_pending_cmd(adapter);
49
50 if (adapter->if_ops.card_reset)
51 adapter->if_ops.card_reset(adapter);
52 }
53
fw_dump_work(struct work_struct * work)54 static void fw_dump_work(struct work_struct *work)
55 {
56 struct mwifiex_adapter *adapter =
57 container_of(work, struct mwifiex_adapter, devdump_work.work);
58
59 mwifiex_upload_device_dump(adapter);
60 }
61
62 /*
63 * This function initializes the private structure and sets default
64 * values to the members.
65 *
66 * Additionally, it also initializes all the locks and sets up all the
67 * lists.
68 */
mwifiex_init_priv(struct mwifiex_private * priv)69 int mwifiex_init_priv(struct mwifiex_private *priv)
70 {
71 u32 i;
72
73 priv->media_connected = false;
74 eth_broadcast_addr(priv->curr_addr);
75 priv->port_open = false;
76 priv->usb_port = MWIFIEX_USB_EP_DATA;
77 priv->pkt_tx_ctrl = 0;
78 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
79 priv->data_rate = 0; /* Initially indicate the rate as auto */
80 priv->is_data_rate_auto = true;
81 priv->bcn_avg_factor = DEFAULT_BCN_AVG_FACTOR;
82 priv->data_avg_factor = DEFAULT_DATA_AVG_FACTOR;
83
84 priv->sec_info.wep_enabled = 0;
85 priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
86 priv->sec_info.encryption_mode = 0;
87 for (i = 0; i < ARRAY_SIZE(priv->wep_key); i++)
88 memset(&priv->wep_key[i], 0, sizeof(struct mwifiex_wep_key));
89 priv->wep_key_curr_index = 0;
90 priv->curr_pkt_filter = HostCmd_ACT_MAC_DYNAMIC_BW_ENABLE |
91 HostCmd_ACT_MAC_RX_ON | HostCmd_ACT_MAC_TX_ON |
92 HostCmd_ACT_MAC_ETHERNETII_ENABLE;
93
94 priv->beacon_period = 100; /* beacon interval */
95 priv->attempted_bss_desc = NULL;
96 memset(&priv->curr_bss_params, 0, sizeof(priv->curr_bss_params));
97 priv->listen_interval = MWIFIEX_DEFAULT_LISTEN_INTERVAL;
98
99 memset(&priv->prev_ssid, 0, sizeof(priv->prev_ssid));
100 memset(&priv->prev_bssid, 0, sizeof(priv->prev_bssid));
101 memset(&priv->assoc_rsp_buf, 0, sizeof(priv->assoc_rsp_buf));
102 priv->assoc_rsp_size = 0;
103 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
104 priv->atim_window = 0;
105 priv->adhoc_state = ADHOC_IDLE;
106 priv->tx_power_level = 0;
107 priv->max_tx_power_level = 0;
108 priv->min_tx_power_level = 0;
109 priv->tx_ant = 0;
110 priv->rx_ant = 0;
111 priv->tx_rate = 0;
112 priv->rxpd_htinfo = 0;
113 priv->rxpd_rate = 0;
114 priv->rate_bitmap = 0;
115 priv->data_rssi_last = 0;
116 priv->data_rssi_avg = 0;
117 priv->data_nf_avg = 0;
118 priv->data_nf_last = 0;
119 priv->bcn_rssi_last = 0;
120 priv->bcn_rssi_avg = 0;
121 priv->bcn_nf_avg = 0;
122 priv->bcn_nf_last = 0;
123 memset(&priv->wpa_ie, 0, sizeof(priv->wpa_ie));
124 memset(&priv->aes_key, 0, sizeof(priv->aes_key));
125 priv->wpa_ie_len = 0;
126 priv->wpa_is_gtk_set = false;
127
128 memset(&priv->assoc_tlv_buf, 0, sizeof(priv->assoc_tlv_buf));
129 priv->assoc_tlv_buf_len = 0;
130 memset(&priv->wps, 0, sizeof(priv->wps));
131 memset(&priv->gen_ie_buf, 0, sizeof(priv->gen_ie_buf));
132 priv->gen_ie_buf_len = 0;
133 memset(priv->vs_ie, 0, sizeof(priv->vs_ie));
134
135 priv->wmm_required = true;
136 priv->wmm_enabled = false;
137 priv->wmm_qosinfo = 0;
138 priv->curr_bcn_buf = NULL;
139 priv->curr_bcn_size = 0;
140 priv->wps_ie = NULL;
141 priv->wps_ie_len = 0;
142 priv->ap_11n_enabled = 0;
143 memset(&priv->roc_cfg, 0, sizeof(priv->roc_cfg));
144
145 priv->scan_block = false;
146
147 priv->csa_chan = 0;
148 priv->csa_expire_time = 0;
149 priv->del_list_idx = 0;
150 priv->hs2_enabled = false;
151 priv->check_tdls_tx = false;
152 memcpy(priv->tos_to_tid_inv, tos_to_tid_inv, MAX_NUM_TID);
153
154 mwifiex_init_11h_params(priv);
155
156 return mwifiex_add_bss_prio_tbl(priv);
157 }
158
159 /*
160 * This function allocates buffers for members of the adapter
161 * structure.
162 *
163 * The memory allocated includes scan table, command buffers, and
164 * sleep confirm command buffer. In addition, the queues are
165 * also initialized.
166 */
mwifiex_allocate_adapter(struct mwifiex_adapter * adapter)167 static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter)
168 {
169 int ret;
170
171 /* Allocate command buffer */
172 ret = mwifiex_alloc_cmd_buffer(adapter);
173 if (ret) {
174 mwifiex_dbg(adapter, ERROR,
175 "%s: failed to alloc cmd buffer\n",
176 __func__);
177 return -1;
178 }
179
180 adapter->sleep_cfm =
181 dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm)
182 + INTF_HEADER_LEN);
183
184 if (!adapter->sleep_cfm) {
185 mwifiex_dbg(adapter, ERROR,
186 "%s: failed to alloc sleep cfm\t"
187 " cmd buffer\n", __func__);
188 return -1;
189 }
190 skb_reserve(adapter->sleep_cfm, INTF_HEADER_LEN);
191
192 return 0;
193 }
194
195 /*
196 * This function initializes the adapter structure and sets default
197 * values to the members of adapter.
198 *
199 * This also initializes the WMM related parameters in the driver private
200 * structures.
201 */
mwifiex_init_adapter(struct mwifiex_adapter * adapter)202 static void mwifiex_init_adapter(struct mwifiex_adapter *adapter)
203 {
204 struct mwifiex_opt_sleep_confirm *sleep_cfm_buf = NULL;
205
206 skb_put(adapter->sleep_cfm, sizeof(struct mwifiex_opt_sleep_confirm));
207
208 adapter->cmd_sent = false;
209
210 if (adapter->iface_type == MWIFIEX_SDIO)
211 adapter->data_sent = true;
212 else
213 adapter->data_sent = false;
214
215 if (adapter->iface_type == MWIFIEX_USB)
216 adapter->intf_hdr_len = 0;
217 else
218 adapter->intf_hdr_len = INTF_HEADER_LEN;
219
220 adapter->cmd_resp_received = false;
221 adapter->event_received = false;
222 adapter->data_received = false;
223
224 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
225
226 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
227
228 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
229 adapter->ps_state = PS_STATE_AWAKE;
230 adapter->need_to_wakeup = false;
231
232 adapter->scan_mode = HostCmd_BSS_MODE_ANY;
233 adapter->specific_scan_time = MWIFIEX_SPECIFIC_SCAN_CHAN_TIME;
234 adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME;
235 adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME;
236 adapter->scan_chan_gap_time = MWIFIEX_DEF_SCAN_CHAN_GAP_TIME;
237
238 adapter->scan_probes = 1;
239
240 adapter->multiple_dtim = 1;
241
242 adapter->local_listen_interval = 0; /* default value in firmware
243 will be used */
244
245 adapter->is_deep_sleep = false;
246
247 adapter->delay_null_pkt = false;
248 adapter->delay_to_ps = 1000;
249 adapter->enhanced_ps_mode = PS_MODE_AUTO;
250
251 adapter->gen_null_pkt = false; /* Disable NULL Pkg generation by
252 default */
253 adapter->pps_uapsd_mode = false; /* Disable pps/uapsd mode by
254 default */
255 adapter->pm_wakeup_card_req = false;
256
257 adapter->pm_wakeup_fw_try = false;
258
259 adapter->curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
260
261 clear_bit(MWIFIEX_IS_HS_CONFIGURED, &adapter->work_flags);
262 adapter->hs_cfg.conditions = cpu_to_le32(HS_CFG_COND_DEF);
263 adapter->hs_cfg.gpio = HS_CFG_GPIO_DEF;
264 adapter->hs_cfg.gap = HS_CFG_GAP_DEF;
265 adapter->hs_activated = false;
266
267 memset(adapter->event_body, 0, sizeof(adapter->event_body));
268 adapter->hw_dot_11n_dev_cap = 0;
269 adapter->hw_dev_mcs_support = 0;
270 adapter->sec_chan_offset = 0;
271 adapter->adhoc_11n_enabled = false;
272
273 mwifiex_wmm_init(adapter);
274 atomic_set(&adapter->tx_hw_pending, 0);
275
276 sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *)
277 adapter->sleep_cfm->data;
278 memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len);
279 sleep_cfm_buf->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH);
280 sleep_cfm_buf->size = cpu_to_le16(adapter->sleep_cfm->len);
281 sleep_cfm_buf->result = 0;
282 sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM);
283 sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED);
284
285 memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period));
286 adapter->tx_lock_flag = false;
287 adapter->null_pkt_interval = 0;
288 adapter->fw_bands = 0;
289 adapter->config_bands = 0;
290 adapter->adhoc_start_band = 0;
291 adapter->fw_release_number = 0;
292 adapter->fw_cap_info = 0;
293 memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf));
294 adapter->event_cause = 0;
295 adapter->region_code = 0;
296 adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT;
297 adapter->adhoc_awake_period = 0;
298 memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter));
299 adapter->arp_filter_size = 0;
300 adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX;
301 adapter->mfg_mode = mfg_mode;
302 adapter->key_api_major_ver = 0;
303 adapter->key_api_minor_ver = 0;
304 eth_broadcast_addr(adapter->perm_addr);
305 adapter->iface_limit.sta_intf = MWIFIEX_MAX_STA_NUM;
306 adapter->iface_limit.uap_intf = MWIFIEX_MAX_UAP_NUM;
307 adapter->iface_limit.p2p_intf = MWIFIEX_MAX_P2P_NUM;
308 adapter->active_scan_triggered = false;
309 timer_setup(&adapter->wakeup_timer, wakeup_timer_fn, 0);
310 adapter->devdump_len = 0;
311 INIT_DELAYED_WORK(&adapter->devdump_work, fw_dump_work);
312 }
313
314 /*
315 * This function sets trans_start per tx_queue
316 */
mwifiex_set_trans_start(struct net_device * dev)317 void mwifiex_set_trans_start(struct net_device *dev)
318 {
319 int i;
320
321 for (i = 0; i < dev->num_tx_queues; i++)
322 txq_trans_cond_update(netdev_get_tx_queue(dev, i));
323
324 netif_trans_update(dev);
325 }
326
327 /*
328 * This function wakes up all queues in net_device
329 */
mwifiex_wake_up_net_dev_queue(struct net_device * netdev,struct mwifiex_adapter * adapter)330 void mwifiex_wake_up_net_dev_queue(struct net_device *netdev,
331 struct mwifiex_adapter *adapter)
332 {
333 spin_lock_bh(&adapter->queue_lock);
334 netif_tx_wake_all_queues(netdev);
335 spin_unlock_bh(&adapter->queue_lock);
336 }
337
338 /*
339 * This function stops all queues in net_device
340 */
mwifiex_stop_net_dev_queue(struct net_device * netdev,struct mwifiex_adapter * adapter)341 void mwifiex_stop_net_dev_queue(struct net_device *netdev,
342 struct mwifiex_adapter *adapter)
343 {
344 spin_lock_bh(&adapter->queue_lock);
345 netif_tx_stop_all_queues(netdev);
346 spin_unlock_bh(&adapter->queue_lock);
347 }
348
349 /*
350 * This function invalidates the list heads.
351 */
mwifiex_invalidate_lists(struct mwifiex_adapter * adapter)352 static void mwifiex_invalidate_lists(struct mwifiex_adapter *adapter)
353 {
354 struct mwifiex_private *priv;
355 s32 i, j;
356
357 list_del(&adapter->cmd_free_q);
358 list_del(&adapter->cmd_pending_q);
359 list_del(&adapter->scan_pending_q);
360
361 for (i = 0; i < adapter->priv_num; i++)
362 list_del(&adapter->bss_prio_tbl[i].bss_prio_head);
363
364 for (i = 0; i < adapter->priv_num; i++) {
365 if (adapter->priv[i]) {
366 priv = adapter->priv[i];
367 for (j = 0; j < MAX_NUM_TID; ++j)
368 list_del(&priv->wmm.tid_tbl_ptr[j].ra_list);
369 list_del(&priv->tx_ba_stream_tbl_ptr);
370 list_del(&priv->rx_reorder_tbl_ptr);
371 list_del(&priv->sta_list);
372 list_del(&priv->auto_tdls_list);
373 }
374 }
375 }
376
377 /*
378 * This function performs cleanup for adapter structure.
379 *
380 * The cleanup is done recursively, by canceling all pending
381 * commands, freeing the member buffers previously allocated
382 * (command buffers, scan table buffer, sleep confirm command
383 * buffer), stopping the timers and calling the cleanup routines
384 * for every interface.
385 */
386 static void
mwifiex_adapter_cleanup(struct mwifiex_adapter * adapter)387 mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter)
388 {
389 del_timer(&adapter->wakeup_timer);
390 cancel_delayed_work_sync(&adapter->devdump_work);
391 mwifiex_cancel_all_pending_cmd(adapter);
392 wake_up_interruptible(&adapter->cmd_wait_q.wait);
393 wake_up_interruptible(&adapter->hs_activate_wait_q);
394 }
395
mwifiex_free_cmd_buffers(struct mwifiex_adapter * adapter)396 void mwifiex_free_cmd_buffers(struct mwifiex_adapter *adapter)
397 {
398 mwifiex_invalidate_lists(adapter);
399
400 /* Free command buffer */
401 mwifiex_dbg(adapter, INFO, "info: free cmd buffer\n");
402 mwifiex_free_cmd_buffer(adapter);
403
404 if (adapter->sleep_cfm)
405 dev_kfree_skb_any(adapter->sleep_cfm);
406 }
407
408 /*
409 * This function intializes the lock variables and
410 * the list heads.
411 */
mwifiex_init_lock_list(struct mwifiex_adapter * adapter)412 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter)
413 {
414 struct mwifiex_private *priv;
415 s32 i, j;
416
417 spin_lock_init(&adapter->int_lock);
418 spin_lock_init(&adapter->main_proc_lock);
419 spin_lock_init(&adapter->mwifiex_cmd_lock);
420 spin_lock_init(&adapter->queue_lock);
421 for (i = 0; i < adapter->priv_num; i++) {
422 if (adapter->priv[i]) {
423 priv = adapter->priv[i];
424 spin_lock_init(&priv->wmm.ra_list_spinlock);
425 spin_lock_init(&priv->curr_bcn_buf_lock);
426 spin_lock_init(&priv->sta_list_spinlock);
427 spin_lock_init(&priv->auto_tdls_lock);
428 }
429 }
430
431 /* Initialize cmd_free_q */
432 INIT_LIST_HEAD(&adapter->cmd_free_q);
433 /* Initialize cmd_pending_q */
434 INIT_LIST_HEAD(&adapter->cmd_pending_q);
435 /* Initialize scan_pending_q */
436 INIT_LIST_HEAD(&adapter->scan_pending_q);
437
438 spin_lock_init(&adapter->cmd_free_q_lock);
439 spin_lock_init(&adapter->cmd_pending_q_lock);
440 spin_lock_init(&adapter->scan_pending_q_lock);
441 spin_lock_init(&adapter->rx_proc_lock);
442
443 skb_queue_head_init(&adapter->rx_data_q);
444 skb_queue_head_init(&adapter->tx_data_q);
445
446 for (i = 0; i < adapter->priv_num; ++i) {
447 INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head);
448 spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock);
449 }
450
451 for (i = 0; i < adapter->priv_num; i++) {
452 if (!adapter->priv[i])
453 continue;
454 priv = adapter->priv[i];
455 for (j = 0; j < MAX_NUM_TID; ++j)
456 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list);
457 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr);
458 INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr);
459 INIT_LIST_HEAD(&priv->sta_list);
460 INIT_LIST_HEAD(&priv->auto_tdls_list);
461 skb_queue_head_init(&priv->tdls_txq);
462 skb_queue_head_init(&priv->bypass_txq);
463
464 spin_lock_init(&priv->tx_ba_stream_tbl_lock);
465 spin_lock_init(&priv->rx_reorder_tbl_lock);
466
467 spin_lock_init(&priv->ack_status_lock);
468 idr_init(&priv->ack_status_frames);
469 }
470
471 return 0;
472 }
473
474 /*
475 * This function initializes the firmware.
476 *
477 * The following operations are performed sequentially -
478 * - Allocate adapter structure
479 * - Initialize the adapter structure
480 * - Initialize the private structure
481 * - Add BSS priority tables to the adapter structure
482 * - For each interface, send the init commands to firmware
483 * - Send the first command in command pending queue, if available
484 */
mwifiex_init_fw(struct mwifiex_adapter * adapter)485 int mwifiex_init_fw(struct mwifiex_adapter *adapter)
486 {
487 int ret;
488 struct mwifiex_private *priv;
489 u8 i, first_sta = true;
490 int is_cmd_pend_q_empty;
491
492 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
493
494 /* Allocate memory for member of adapter structure */
495 ret = mwifiex_allocate_adapter(adapter);
496 if (ret)
497 return -1;
498
499 /* Initialize adapter structure */
500 mwifiex_init_adapter(adapter);
501
502 for (i = 0; i < adapter->priv_num; i++) {
503 if (adapter->priv[i]) {
504 priv = adapter->priv[i];
505
506 /* Initialize private structure */
507 ret = mwifiex_init_priv(priv);
508 if (ret)
509 return -1;
510 }
511 }
512 if (adapter->mfg_mode) {
513 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
514 ret = -EINPROGRESS;
515 } else {
516 for (i = 0; i < adapter->priv_num; i++) {
517 if (adapter->priv[i]) {
518 ret = mwifiex_sta_init_cmd(adapter->priv[i],
519 first_sta, true);
520 if (ret == -1)
521 return -1;
522
523 first_sta = false;
524 }
525
526
527
528 }
529 }
530
531 spin_lock_bh(&adapter->cmd_pending_q_lock);
532 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
533 spin_unlock_bh(&adapter->cmd_pending_q_lock);
534 if (!is_cmd_pend_q_empty) {
535 /* Send the first command in queue and return */
536 if (mwifiex_main_process(adapter) != -1)
537 ret = -EINPROGRESS;
538 } else {
539 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
540 }
541
542 return ret;
543 }
544
545 /*
546 * This function deletes the BSS priority tables.
547 *
548 * The function traverses through all the allocated BSS priority nodes
549 * in every BSS priority table and frees them.
550 */
mwifiex_delete_bss_prio_tbl(struct mwifiex_private * priv)551 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv)
552 {
553 int i;
554 struct mwifiex_adapter *adapter = priv->adapter;
555 struct mwifiex_bss_prio_node *bssprio_node, *tmp_node;
556 struct list_head *head;
557 spinlock_t *lock; /* bss priority lock */
558
559 for (i = 0; i < adapter->priv_num; ++i) {
560 head = &adapter->bss_prio_tbl[i].bss_prio_head;
561 lock = &adapter->bss_prio_tbl[i].bss_prio_lock;
562 mwifiex_dbg(adapter, INFO,
563 "info: delete BSS priority table,\t"
564 "bss_type = %d, bss_num = %d, i = %d,\t"
565 "head = %p\n",
566 priv->bss_type, priv->bss_num, i, head);
567
568 {
569 spin_lock_bh(lock);
570 list_for_each_entry_safe(bssprio_node, tmp_node, head,
571 list) {
572 if (bssprio_node->priv == priv) {
573 mwifiex_dbg(adapter, INFO,
574 "info: Delete\t"
575 "node %p, next = %p\n",
576 bssprio_node, tmp_node);
577 list_del(&bssprio_node->list);
578 kfree(bssprio_node);
579 }
580 }
581 spin_unlock_bh(lock);
582 }
583 }
584 }
585
586 /*
587 * This function frees the private structure, including cleans
588 * up the TX and RX queues and frees the BSS priority tables.
589 */
mwifiex_free_priv(struct mwifiex_private * priv)590 void mwifiex_free_priv(struct mwifiex_private *priv)
591 {
592 mwifiex_clean_txrx(priv);
593 mwifiex_delete_bss_prio_tbl(priv);
594 mwifiex_free_curr_bcn(priv);
595 }
596
597 /*
598 * This function is used to shutdown the driver.
599 *
600 * The following operations are performed sequentially -
601 * - Check if already shut down
602 * - Make sure the main process has stopped
603 * - Clean up the Tx and Rx queues
604 * - Delete BSS priority tables
605 * - Free the adapter
606 * - Notify completion
607 */
608 void
mwifiex_shutdown_drv(struct mwifiex_adapter * adapter)609 mwifiex_shutdown_drv(struct mwifiex_adapter *adapter)
610 {
611 struct mwifiex_private *priv;
612 s32 i;
613 struct sk_buff *skb;
614
615 /* mwifiex already shutdown */
616 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
617 return;
618
619 /* cancel current command */
620 if (adapter->curr_cmd) {
621 mwifiex_dbg(adapter, WARN,
622 "curr_cmd is still in processing\n");
623 del_timer_sync(&adapter->cmd_timer);
624 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd);
625 adapter->curr_cmd = NULL;
626 }
627
628 /* shut down mwifiex */
629 mwifiex_dbg(adapter, MSG,
630 "info: shutdown mwifiex...\n");
631
632 /* Clean up Tx/Rx queues and delete BSS priority table */
633 for (i = 0; i < adapter->priv_num; i++) {
634 if (adapter->priv[i]) {
635 priv = adapter->priv[i];
636
637 mwifiex_clean_auto_tdls(priv);
638 mwifiex_abort_cac(priv);
639 mwifiex_free_priv(priv);
640 }
641 }
642
643 atomic_set(&adapter->tx_queued, 0);
644 while ((skb = skb_dequeue(&adapter->tx_data_q)))
645 mwifiex_write_data_complete(adapter, skb, 0, 0);
646
647 spin_lock_bh(&adapter->rx_proc_lock);
648
649 while ((skb = skb_dequeue(&adapter->rx_data_q))) {
650 struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb);
651
652 atomic_dec(&adapter->rx_pending);
653 priv = adapter->priv[rx_info->bss_num];
654 if (priv)
655 priv->stats.rx_dropped++;
656
657 dev_kfree_skb_any(skb);
658 }
659
660 spin_unlock_bh(&adapter->rx_proc_lock);
661
662 mwifiex_adapter_cleanup(adapter);
663
664 adapter->hw_status = MWIFIEX_HW_STATUS_NOT_READY;
665 }
666
667 /*
668 * This function downloads the firmware to the card.
669 *
670 * The actual download is preceded by two sanity checks -
671 * - Check if firmware is already running
672 * - Check if the interface is the winner to download the firmware
673 *
674 * ...and followed by another -
675 * - Check if the firmware is downloaded successfully
676 *
677 * After download is successfully completed, the host interrupts are enabled.
678 */
mwifiex_dnld_fw(struct mwifiex_adapter * adapter,struct mwifiex_fw_image * pmfw)679 int mwifiex_dnld_fw(struct mwifiex_adapter *adapter,
680 struct mwifiex_fw_image *pmfw)
681 {
682 int ret;
683 u32 poll_num = 1;
684
685 /* check if firmware is already running */
686 ret = adapter->if_ops.check_fw_status(adapter, poll_num);
687 if (!ret) {
688 mwifiex_dbg(adapter, MSG,
689 "WLAN FW already running! Skip FW dnld\n");
690 return 0;
691 }
692
693 /* check if we are the winner for downloading FW */
694 if (adapter->if_ops.check_winner_status) {
695 adapter->winner = 0;
696 ret = adapter->if_ops.check_winner_status(adapter);
697
698 poll_num = MAX_FIRMWARE_POLL_TRIES;
699 if (ret) {
700 mwifiex_dbg(adapter, MSG,
701 "WLAN read winner status failed!\n");
702 return ret;
703 }
704
705 if (!adapter->winner) {
706 mwifiex_dbg(adapter, MSG,
707 "WLAN is not the winner! Skip FW dnld\n");
708 goto poll_fw;
709 }
710 }
711
712 if (pmfw) {
713 /* Download firmware with helper */
714 ret = adapter->if_ops.prog_fw(adapter, pmfw);
715 if (ret) {
716 mwifiex_dbg(adapter, ERROR,
717 "prog_fw failed ret=%#x\n", ret);
718 return ret;
719 }
720 }
721
722 poll_fw:
723 /* Check if the firmware is downloaded successfully or not */
724 ret = adapter->if_ops.check_fw_status(adapter, poll_num);
725 if (ret)
726 mwifiex_dbg(adapter, ERROR,
727 "FW failed to be active in time\n");
728
729 return ret;
730 }
731 EXPORT_SYMBOL_GPL(mwifiex_dnld_fw);
732