1 /*
2 * Marvell Wireless LAN device driver: HW/FW Initialization
3 *
4 * Copyright (C) 2011-2014, Marvell International Ltd.
5 *
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
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 unsigned long flags;
40
41 bss_prio = kzalloc(sizeof(struct mwifiex_bss_prio_node), GFP_KERNEL);
42 if (!bss_prio)
43 return -ENOMEM;
44
45 bss_prio->priv = priv;
46 INIT_LIST_HEAD(&bss_prio->list);
47
48 spin_lock_irqsave(&tbl[priv->bss_priority].bss_prio_lock, flags);
49 list_add_tail(&bss_prio->list, &tbl[priv->bss_priority].bss_prio_head);
50 spin_unlock_irqrestore(&tbl[priv->bss_priority].bss_prio_lock, flags);
51
52 return 0;
53 }
54
wakeup_timer_fn(unsigned long data)55 static void wakeup_timer_fn(unsigned long data)
56 {
57 struct mwifiex_adapter *adapter = (struct mwifiex_adapter *)data;
58
59 dev_err(adapter->dev, "Firmware wakeup failed\n");
60 adapter->hw_status = MWIFIEX_HW_STATUS_RESET;
61 mwifiex_cancel_all_pending_cmd(adapter);
62
63 if (adapter->if_ops.card_reset)
64 adapter->if_ops.card_reset(adapter);
65 }
66
67 /*
68 * This function initializes the private structure and sets default
69 * values to the members.
70 *
71 * Additionally, it also initializes all the locks and sets up all the
72 * lists.
73 */
mwifiex_init_priv(struct mwifiex_private * priv)74 int mwifiex_init_priv(struct mwifiex_private *priv)
75 {
76 u32 i;
77
78 priv->media_connected = false;
79 eth_broadcast_addr(priv->curr_addr);
80
81 priv->pkt_tx_ctrl = 0;
82 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
83 priv->data_rate = 0; /* Initially indicate the rate as auto */
84 priv->is_data_rate_auto = true;
85 priv->bcn_avg_factor = DEFAULT_BCN_AVG_FACTOR;
86 priv->data_avg_factor = DEFAULT_DATA_AVG_FACTOR;
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_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_rate = 0;
113 priv->rxpd_htinfo = 0;
114 priv->rxpd_rate = 0;
115 priv->rate_bitmap = 0;
116 priv->data_rssi_last = 0;
117 priv->data_rssi_avg = 0;
118 priv->data_nf_avg = 0;
119 priv->data_nf_last = 0;
120 priv->bcn_rssi_last = 0;
121 priv->bcn_rssi_avg = 0;
122 priv->bcn_nf_avg = 0;
123 priv->bcn_nf_last = 0;
124 memset(&priv->wpa_ie, 0, sizeof(priv->wpa_ie));
125 memset(&priv->aes_key, 0, sizeof(priv->aes_key));
126 priv->wpa_ie_len = 0;
127 priv->wpa_is_gtk_set = false;
128
129 memset(&priv->assoc_tlv_buf, 0, sizeof(priv->assoc_tlv_buf));
130 priv->assoc_tlv_buf_len = 0;
131 memset(&priv->wps, 0, sizeof(priv->wps));
132 memset(&priv->gen_ie_buf, 0, sizeof(priv->gen_ie_buf));
133 priv->gen_ie_buf_len = 0;
134 memset(priv->vs_ie, 0, sizeof(priv->vs_ie));
135
136 priv->wmm_required = true;
137 priv->wmm_enabled = false;
138 priv->wmm_qosinfo = 0;
139 priv->curr_bcn_buf = NULL;
140 priv->curr_bcn_size = 0;
141 priv->wps_ie = NULL;
142 priv->wps_ie_len = 0;
143 priv->ap_11n_enabled = 0;
144 memset(&priv->roc_cfg, 0, sizeof(priv->roc_cfg));
145
146 priv->scan_block = false;
147
148 priv->csa_chan = 0;
149 priv->csa_expire_time = 0;
150 priv->del_list_idx = 0;
151 priv->hs2_enabled = false;
152 priv->check_tdls_tx = false;
153 memcpy(priv->tos_to_tid_inv, tos_to_tid_inv, MAX_NUM_TID);
154
155 mwifiex_init_11h_params(priv);
156
157 return mwifiex_add_bss_prio_tbl(priv);
158 }
159
160 /*
161 * This function allocates buffers for members of the adapter
162 * structure.
163 *
164 * The memory allocated includes scan table, command buffers, and
165 * sleep confirm command buffer. In addition, the queues are
166 * also initialized.
167 */
mwifiex_allocate_adapter(struct mwifiex_adapter * adapter)168 static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter)
169 {
170 int ret;
171
172 /* Allocate command buffer */
173 ret = mwifiex_alloc_cmd_buffer(adapter);
174 if (ret) {
175 dev_err(adapter->dev, "%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 dev_err(adapter->dev, "%s: failed to alloc sleep cfm"
186 " cmd buffer\n", __func__);
187 return -1;
188 }
189 skb_reserve(adapter->sleep_cfm, INTF_HEADER_LEN);
190
191 return 0;
192 }
193
194 /*
195 * This function initializes the adapter structure and sets default
196 * values to the members of adapter.
197 *
198 * This also initializes the WMM related parameters in the driver private
199 * structures.
200 */
mwifiex_init_adapter(struct mwifiex_adapter * adapter)201 static void mwifiex_init_adapter(struct mwifiex_adapter *adapter)
202 {
203 struct mwifiex_opt_sleep_confirm *sleep_cfm_buf = NULL;
204
205 skb_put(adapter->sleep_cfm, sizeof(struct mwifiex_opt_sleep_confirm));
206
207 adapter->cmd_sent = false;
208
209 if (adapter->iface_type == MWIFIEX_SDIO)
210 adapter->data_sent = true;
211 else
212 adapter->data_sent = false;
213
214 adapter->cmd_resp_received = false;
215 adapter->event_received = false;
216 adapter->data_received = false;
217
218 adapter->surprise_removed = false;
219
220 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
221
222 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
223 adapter->ps_state = PS_STATE_AWAKE;
224 adapter->need_to_wakeup = false;
225
226 adapter->scan_mode = HostCmd_BSS_MODE_ANY;
227 adapter->specific_scan_time = MWIFIEX_SPECIFIC_SCAN_CHAN_TIME;
228 adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME;
229 adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME;
230 adapter->scan_chan_gap_time = MWIFIEX_DEF_SCAN_CHAN_GAP_TIME;
231
232 adapter->scan_probes = 1;
233
234 adapter->multiple_dtim = 1;
235
236 adapter->local_listen_interval = 0; /* default value in firmware
237 will be used */
238
239 adapter->is_deep_sleep = false;
240
241 adapter->delay_null_pkt = false;
242 adapter->delay_to_ps = 1000;
243 adapter->enhanced_ps_mode = PS_MODE_AUTO;
244
245 adapter->gen_null_pkt = false; /* Disable NULL Pkg generation by
246 default */
247 adapter->pps_uapsd_mode = false; /* Disable pps/uapsd mode by
248 default */
249 adapter->pm_wakeup_card_req = false;
250
251 adapter->pm_wakeup_fw_try = false;
252
253 adapter->curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
254
255 adapter->is_hs_configured = false;
256 adapter->hs_cfg.conditions = cpu_to_le32(HS_CFG_COND_DEF);
257 adapter->hs_cfg.gpio = HS_CFG_GPIO_DEF;
258 adapter->hs_cfg.gap = HS_CFG_GAP_DEF;
259 adapter->hs_activated = false;
260
261 memset(adapter->event_body, 0, sizeof(adapter->event_body));
262 adapter->hw_dot_11n_dev_cap = 0;
263 adapter->hw_dev_mcs_support = 0;
264 adapter->sec_chan_offset = 0;
265 adapter->adhoc_11n_enabled = false;
266
267 mwifiex_wmm_init(adapter);
268
269 sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *)
270 adapter->sleep_cfm->data;
271 memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len);
272 sleep_cfm_buf->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH);
273 sleep_cfm_buf->size = cpu_to_le16(adapter->sleep_cfm->len);
274 sleep_cfm_buf->result = 0;
275 sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM);
276 sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED);
277
278 memset(&adapter->sleep_params, 0, sizeof(adapter->sleep_params));
279 memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period));
280 adapter->tx_lock_flag = false;
281 adapter->null_pkt_interval = 0;
282 adapter->fw_bands = 0;
283 adapter->config_bands = 0;
284 adapter->adhoc_start_band = 0;
285 adapter->scan_channels = NULL;
286 adapter->fw_release_number = 0;
287 adapter->fw_cap_info = 0;
288 memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf));
289 adapter->event_cause = 0;
290 adapter->region_code = 0;
291 adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT;
292 adapter->adhoc_awake_period = 0;
293 memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter));
294 adapter->arp_filter_size = 0;
295 adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX;
296 adapter->key_api_major_ver = 0;
297 adapter->key_api_minor_ver = 0;
298 eth_broadcast_addr(adapter->perm_addr);
299 adapter->iface_limit.sta_intf = MWIFIEX_MAX_STA_NUM;
300 adapter->iface_limit.uap_intf = MWIFIEX_MAX_UAP_NUM;
301 adapter->iface_limit.p2p_intf = MWIFIEX_MAX_P2P_NUM;
302
303 setup_timer(&adapter->wakeup_timer, wakeup_timer_fn,
304 (unsigned long)adapter);
305 }
306
307 /*
308 * This function sets trans_start per tx_queue
309 */
mwifiex_set_trans_start(struct net_device * dev)310 void mwifiex_set_trans_start(struct net_device *dev)
311 {
312 int i;
313
314 for (i = 0; i < dev->num_tx_queues; i++)
315 netdev_get_tx_queue(dev, i)->trans_start = jiffies;
316
317 dev->trans_start = jiffies;
318 }
319
320 /*
321 * This function wakes up all queues in net_device
322 */
mwifiex_wake_up_net_dev_queue(struct net_device * netdev,struct mwifiex_adapter * adapter)323 void mwifiex_wake_up_net_dev_queue(struct net_device *netdev,
324 struct mwifiex_adapter *adapter)
325 {
326 unsigned long dev_queue_flags;
327 unsigned int i;
328
329 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags);
330
331 for (i = 0; i < netdev->num_tx_queues; i++) {
332 struct netdev_queue *txq = netdev_get_tx_queue(netdev, i);
333
334 if (netif_tx_queue_stopped(txq))
335 netif_tx_wake_queue(txq);
336 }
337
338 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags);
339 }
340
341 /*
342 * This function stops all queues in net_device
343 */
mwifiex_stop_net_dev_queue(struct net_device * netdev,struct mwifiex_adapter * adapter)344 void mwifiex_stop_net_dev_queue(struct net_device *netdev,
345 struct mwifiex_adapter *adapter)
346 {
347 unsigned long dev_queue_flags;
348 unsigned int i;
349
350 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags);
351
352 for (i = 0; i < netdev->num_tx_queues; i++) {
353 struct netdev_queue *txq = netdev_get_tx_queue(netdev, i);
354
355 if (!netif_tx_queue_stopped(txq))
356 netif_tx_stop_queue(txq);
357 }
358
359 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags);
360 }
361
362 /*
363 * This function releases the lock variables and frees the locks and
364 * associated locks.
365 */
mwifiex_free_lock_list(struct mwifiex_adapter * adapter)366 static void mwifiex_free_lock_list(struct mwifiex_adapter *adapter)
367 {
368 struct mwifiex_private *priv;
369 s32 i, j;
370
371 /* Free lists */
372 list_del(&adapter->cmd_free_q);
373 list_del(&adapter->cmd_pending_q);
374 list_del(&adapter->scan_pending_q);
375
376 for (i = 0; i < adapter->priv_num; i++)
377 list_del(&adapter->bss_prio_tbl[i].bss_prio_head);
378
379 for (i = 0; i < adapter->priv_num; i++) {
380 if (adapter->priv[i]) {
381 priv = adapter->priv[i];
382 for (j = 0; j < MAX_NUM_TID; ++j)
383 list_del(&priv->wmm.tid_tbl_ptr[j].ra_list);
384 list_del(&priv->tx_ba_stream_tbl_ptr);
385 list_del(&priv->rx_reorder_tbl_ptr);
386 list_del(&priv->sta_list);
387 list_del(&priv->auto_tdls_list);
388 }
389 }
390 }
391
392 /*
393 * This function performs cleanup for adapter structure.
394 *
395 * The cleanup is done recursively, by canceling all pending
396 * commands, freeing the member buffers previously allocated
397 * (command buffers, scan table buffer, sleep confirm command
398 * buffer), stopping the timers and calling the cleanup routines
399 * for every interface.
400 */
401 static void
mwifiex_adapter_cleanup(struct mwifiex_adapter * adapter)402 mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter)
403 {
404 int idx;
405
406 if (!adapter) {
407 pr_err("%s: adapter is NULL\n", __func__);
408 return;
409 }
410
411 del_timer(&adapter->wakeup_timer);
412 mwifiex_cancel_all_pending_cmd(adapter);
413 wake_up_interruptible(&adapter->cmd_wait_q.wait);
414 wake_up_interruptible(&adapter->hs_activate_wait_q);
415
416 /* Free lock variables */
417 mwifiex_free_lock_list(adapter);
418
419 /* Free command buffer */
420 dev_dbg(adapter->dev, "info: free cmd buffer\n");
421 mwifiex_free_cmd_buffer(adapter);
422
423 for (idx = 0; idx < adapter->num_mem_types; idx++) {
424 struct memory_type_mapping *entry =
425 &adapter->mem_type_mapping_tbl[idx];
426
427 if (entry->mem_ptr) {
428 vfree(entry->mem_ptr);
429 entry->mem_ptr = NULL;
430 }
431 entry->mem_size = 0;
432 }
433
434 if (adapter->drv_info_dump) {
435 vfree(adapter->drv_info_dump);
436 adapter->drv_info_size = 0;
437 }
438
439 if (adapter->sleep_cfm)
440 dev_kfree_skb_any(adapter->sleep_cfm);
441 }
442
443 /*
444 * This function intializes the lock variables and
445 * the list heads.
446 */
mwifiex_init_lock_list(struct mwifiex_adapter * adapter)447 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter)
448 {
449 struct mwifiex_private *priv;
450 s32 i, j;
451
452 spin_lock_init(&adapter->mwifiex_lock);
453 spin_lock_init(&adapter->int_lock);
454 spin_lock_init(&adapter->main_proc_lock);
455 spin_lock_init(&adapter->mwifiex_cmd_lock);
456 spin_lock_init(&adapter->queue_lock);
457 for (i = 0; i < adapter->priv_num; i++) {
458 if (adapter->priv[i]) {
459 priv = adapter->priv[i];
460 spin_lock_init(&priv->rx_pkt_lock);
461 spin_lock_init(&priv->wmm.ra_list_spinlock);
462 spin_lock_init(&priv->curr_bcn_buf_lock);
463 spin_lock_init(&priv->sta_list_spinlock);
464 spin_lock_init(&priv->auto_tdls_lock);
465 }
466 }
467
468 /* Initialize cmd_free_q */
469 INIT_LIST_HEAD(&adapter->cmd_free_q);
470 /* Initialize cmd_pending_q */
471 INIT_LIST_HEAD(&adapter->cmd_pending_q);
472 /* Initialize scan_pending_q */
473 INIT_LIST_HEAD(&adapter->scan_pending_q);
474
475 spin_lock_init(&adapter->cmd_free_q_lock);
476 spin_lock_init(&adapter->cmd_pending_q_lock);
477 spin_lock_init(&adapter->scan_pending_q_lock);
478 spin_lock_init(&adapter->rx_proc_lock);
479
480 skb_queue_head_init(&adapter->rx_data_q);
481 skb_queue_head_init(&adapter->tx_data_q);
482
483 for (i = 0; i < adapter->priv_num; ++i) {
484 INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head);
485 spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock);
486 }
487
488 for (i = 0; i < adapter->priv_num; i++) {
489 if (!adapter->priv[i])
490 continue;
491 priv = adapter->priv[i];
492 for (j = 0; j < MAX_NUM_TID; ++j)
493 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list);
494 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr);
495 INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr);
496 INIT_LIST_HEAD(&priv->sta_list);
497 INIT_LIST_HEAD(&priv->auto_tdls_list);
498 skb_queue_head_init(&priv->tdls_txq);
499
500 spin_lock_init(&priv->tx_ba_stream_tbl_lock);
501 spin_lock_init(&priv->rx_reorder_tbl_lock);
502
503 spin_lock_init(&priv->ack_status_lock);
504 idr_init(&priv->ack_status_frames);
505 }
506
507 return 0;
508 }
509
510 /*
511 * This function initializes the firmware.
512 *
513 * The following operations are performed sequentially -
514 * - Allocate adapter structure
515 * - Initialize the adapter structure
516 * - Initialize the private structure
517 * - Add BSS priority tables to the adapter structure
518 * - For each interface, send the init commands to firmware
519 * - Send the first command in command pending queue, if available
520 */
mwifiex_init_fw(struct mwifiex_adapter * adapter)521 int mwifiex_init_fw(struct mwifiex_adapter *adapter)
522 {
523 int ret;
524 struct mwifiex_private *priv;
525 u8 i, first_sta = true;
526 int is_cmd_pend_q_empty;
527 unsigned long flags;
528
529 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
530
531 /* Allocate memory for member of adapter structure */
532 ret = mwifiex_allocate_adapter(adapter);
533 if (ret)
534 return -1;
535
536 /* Initialize adapter structure */
537 mwifiex_init_adapter(adapter);
538
539 for (i = 0; i < adapter->priv_num; i++) {
540 if (adapter->priv[i]) {
541 priv = adapter->priv[i];
542
543 /* Initialize private structure */
544 ret = mwifiex_init_priv(priv);
545 if (ret)
546 return -1;
547 }
548 }
549
550 if (adapter->if_ops.init_fw_port) {
551 if (adapter->if_ops.init_fw_port(adapter))
552 return -1;
553 }
554
555 for (i = 0; i < adapter->priv_num; i++) {
556 if (adapter->priv[i]) {
557 ret = mwifiex_sta_init_cmd(adapter->priv[i], first_sta,
558 true);
559 if (ret == -1)
560 return -1;
561
562 first_sta = false;
563 }
564 }
565
566 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
567 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
568 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
569 if (!is_cmd_pend_q_empty) {
570 /* Send the first command in queue and return */
571 if (mwifiex_main_process(adapter) != -1)
572 ret = -EINPROGRESS;
573 } else {
574 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
575 }
576
577 return ret;
578 }
579
580 /*
581 * This function deletes the BSS priority tables.
582 *
583 * The function traverses through all the allocated BSS priority nodes
584 * in every BSS priority table and frees them.
585 */
mwifiex_delete_bss_prio_tbl(struct mwifiex_private * priv)586 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv)
587 {
588 int i;
589 struct mwifiex_adapter *adapter = priv->adapter;
590 struct mwifiex_bss_prio_node *bssprio_node, *tmp_node;
591 struct list_head *head;
592 spinlock_t *lock; /* bss priority lock */
593 unsigned long flags;
594
595 for (i = 0; i < adapter->priv_num; ++i) {
596 head = &adapter->bss_prio_tbl[i].bss_prio_head;
597 lock = &adapter->bss_prio_tbl[i].bss_prio_lock;
598 dev_dbg(adapter->dev, "info: delete BSS priority table,"
599 " bss_type = %d, bss_num = %d, i = %d,"
600 " head = %p\n",
601 priv->bss_type, priv->bss_num, i, head);
602
603 {
604 spin_lock_irqsave(lock, flags);
605 if (list_empty(head)) {
606 spin_unlock_irqrestore(lock, flags);
607 continue;
608 }
609 list_for_each_entry_safe(bssprio_node, tmp_node, head,
610 list) {
611 if (bssprio_node->priv == priv) {
612 dev_dbg(adapter->dev, "info: Delete "
613 "node %p, next = %p\n",
614 bssprio_node, tmp_node);
615 list_del(&bssprio_node->list);
616 kfree(bssprio_node);
617 }
618 }
619 spin_unlock_irqrestore(lock, flags);
620 }
621 }
622 }
623
624 /*
625 * This function frees the private structure, including cleans
626 * up the TX and RX queues and frees the BSS priority tables.
627 */
mwifiex_free_priv(struct mwifiex_private * priv)628 void mwifiex_free_priv(struct mwifiex_private *priv)
629 {
630 mwifiex_clean_txrx(priv);
631 mwifiex_delete_bss_prio_tbl(priv);
632 mwifiex_free_curr_bcn(priv);
633 }
634
635 /*
636 * This function is used to shutdown the driver.
637 *
638 * The following operations are performed sequentially -
639 * - Check if already shut down
640 * - Make sure the main process has stopped
641 * - Clean up the Tx and Rx queues
642 * - Delete BSS priority tables
643 * - Free the adapter
644 * - Notify completion
645 */
646 int
mwifiex_shutdown_drv(struct mwifiex_adapter * adapter)647 mwifiex_shutdown_drv(struct mwifiex_adapter *adapter)
648 {
649 int ret = -EINPROGRESS;
650 struct mwifiex_private *priv;
651 s32 i;
652 unsigned long flags;
653 struct sk_buff *skb;
654
655 /* mwifiex already shutdown */
656 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
657 return 0;
658
659 adapter->hw_status = MWIFIEX_HW_STATUS_CLOSING;
660 /* wait for mwifiex_process to complete */
661 if (adapter->mwifiex_processing) {
662 dev_warn(adapter->dev, "main process is still running\n");
663 return ret;
664 }
665
666 /* cancel current command */
667 if (adapter->curr_cmd) {
668 dev_warn(adapter->dev, "curr_cmd is still in processing\n");
669 del_timer_sync(&adapter->cmd_timer);
670 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd);
671 adapter->curr_cmd = NULL;
672 }
673
674 /* shut down mwifiex */
675 dev_dbg(adapter->dev, "info: shutdown mwifiex...\n");
676
677 /* Clean up Tx/Rx queues and delete BSS priority table */
678 for (i = 0; i < adapter->priv_num; i++) {
679 if (adapter->priv[i]) {
680 priv = adapter->priv[i];
681
682 mwifiex_clean_auto_tdls(priv);
683 mwifiex_abort_cac(priv);
684 mwifiex_clean_txrx(priv);
685 mwifiex_delete_bss_prio_tbl(priv);
686 }
687 }
688
689 atomic_set(&adapter->tx_queued, 0);
690 while ((skb = skb_dequeue(&adapter->tx_data_q)))
691 mwifiex_write_data_complete(adapter, skb, 0, 0);
692
693 spin_lock_irqsave(&adapter->rx_proc_lock, flags);
694
695 while ((skb = skb_dequeue(&adapter->rx_data_q))) {
696 struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb);
697
698 atomic_dec(&adapter->rx_pending);
699 priv = adapter->priv[rx_info->bss_num];
700 if (priv)
701 priv->stats.rx_dropped++;
702
703 dev_kfree_skb_any(skb);
704 }
705
706 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
707
708 spin_lock(&adapter->mwifiex_lock);
709
710 mwifiex_adapter_cleanup(adapter);
711
712 spin_unlock(&adapter->mwifiex_lock);
713
714 /* Notify completion */
715 ret = mwifiex_shutdown_fw_complete(adapter);
716
717 return ret;
718 }
719
720 /*
721 * This function downloads the firmware to the card.
722 *
723 * The actual download is preceded by two sanity checks -
724 * - Check if firmware is already running
725 * - Check if the interface is the winner to download the firmware
726 *
727 * ...and followed by another -
728 * - Check if the firmware is downloaded successfully
729 *
730 * After download is successfully completed, the host interrupts are enabled.
731 */
mwifiex_dnld_fw(struct mwifiex_adapter * adapter,struct mwifiex_fw_image * pmfw)732 int mwifiex_dnld_fw(struct mwifiex_adapter *adapter,
733 struct mwifiex_fw_image *pmfw)
734 {
735 int ret;
736 u32 poll_num = 1;
737
738 if (adapter->if_ops.check_fw_status) {
739 adapter->winner = 0;
740
741 /* check if firmware is already running */
742 ret = adapter->if_ops.check_fw_status(adapter, poll_num);
743 if (!ret) {
744 dev_notice(adapter->dev,
745 "WLAN FW already running! Skip FW dnld\n");
746 return 0;
747 }
748
749 poll_num = MAX_FIRMWARE_POLL_TRIES;
750
751 /* check if we are the winner for downloading FW */
752 if (!adapter->winner) {
753 dev_notice(adapter->dev,
754 "FW already running! Skip FW dnld\n");
755 goto poll_fw;
756 }
757 }
758
759 if (pmfw) {
760 /* Download firmware with helper */
761 ret = adapter->if_ops.prog_fw(adapter, pmfw);
762 if (ret) {
763 dev_err(adapter->dev, "prog_fw failed ret=%#x\n", ret);
764 return ret;
765 }
766 }
767
768 poll_fw:
769 /* Check if the firmware is downloaded successfully or not */
770 ret = adapter->if_ops.check_fw_status(adapter, poll_num);
771 if (ret)
772 dev_err(adapter->dev, "FW failed to be active in time\n");
773
774 return ret;
775 }
776