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