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