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(struct timer_list * t)55 static void wakeup_timer_fn(struct timer_list *t)
56 {
57 struct mwifiex_adapter *adapter = from_timer(adapter, t, wakeup_timer);
58
59 mwifiex_dbg(adapter, ERROR, "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 && !adapter->hs_activated)
64 adapter->if_ops.card_reset(adapter);
65 }
66
fw_dump_timer_fn(struct timer_list * t)67 static void fw_dump_timer_fn(struct timer_list *t)
68 {
69 struct mwifiex_adapter *adapter = from_timer(adapter, t, devdump_timer);
70
71 mwifiex_upload_device_dump(adapter);
72 }
73
74 /*
75 * This function initializes the private structure and sets default
76 * values to the members.
77 *
78 * Additionally, it also initializes all the locks and sets up all the
79 * lists.
80 */
mwifiex_init_priv(struct mwifiex_private * priv)81 int mwifiex_init_priv(struct mwifiex_private *priv)
82 {
83 u32 i;
84
85 priv->media_connected = false;
86 eth_broadcast_addr(priv->curr_addr);
87 priv->port_open = false;
88 priv->usb_port = MWIFIEX_USB_EP_DATA;
89 priv->pkt_tx_ctrl = 0;
90 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
91 priv->data_rate = 0; /* Initially indicate the rate as auto */
92 priv->is_data_rate_auto = true;
93 priv->bcn_avg_factor = DEFAULT_BCN_AVG_FACTOR;
94 priv->data_avg_factor = DEFAULT_DATA_AVG_FACTOR;
95
96 priv->sec_info.wep_enabled = 0;
97 priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
98 priv->sec_info.encryption_mode = 0;
99 for (i = 0; i < ARRAY_SIZE(priv->wep_key); i++)
100 memset(&priv->wep_key[i], 0, sizeof(struct mwifiex_wep_key));
101 priv->wep_key_curr_index = 0;
102 priv->curr_pkt_filter = HostCmd_ACT_MAC_DYNAMIC_BW_ENABLE |
103 HostCmd_ACT_MAC_RX_ON | HostCmd_ACT_MAC_TX_ON |
104 HostCmd_ACT_MAC_ETHERNETII_ENABLE;
105
106 priv->beacon_period = 100; /* beacon interval */
107 priv->attempted_bss_desc = NULL;
108 memset(&priv->curr_bss_params, 0, sizeof(priv->curr_bss_params));
109 priv->listen_interval = MWIFIEX_DEFAULT_LISTEN_INTERVAL;
110
111 memset(&priv->prev_ssid, 0, sizeof(priv->prev_ssid));
112 memset(&priv->prev_bssid, 0, sizeof(priv->prev_bssid));
113 memset(&priv->assoc_rsp_buf, 0, sizeof(priv->assoc_rsp_buf));
114 priv->assoc_rsp_size = 0;
115 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
116 priv->atim_window = 0;
117 priv->adhoc_state = ADHOC_IDLE;
118 priv->tx_power_level = 0;
119 priv->max_tx_power_level = 0;
120 priv->min_tx_power_level = 0;
121 priv->tx_ant = 0;
122 priv->rx_ant = 0;
123 priv->tx_rate = 0;
124 priv->rxpd_htinfo = 0;
125 priv->rxpd_rate = 0;
126 priv->rate_bitmap = 0;
127 priv->data_rssi_last = 0;
128 priv->data_rssi_avg = 0;
129 priv->data_nf_avg = 0;
130 priv->data_nf_last = 0;
131 priv->bcn_rssi_last = 0;
132 priv->bcn_rssi_avg = 0;
133 priv->bcn_nf_avg = 0;
134 priv->bcn_nf_last = 0;
135 memset(&priv->wpa_ie, 0, sizeof(priv->wpa_ie));
136 memset(&priv->aes_key, 0, sizeof(priv->aes_key));
137 priv->wpa_ie_len = 0;
138 priv->wpa_is_gtk_set = false;
139
140 memset(&priv->assoc_tlv_buf, 0, sizeof(priv->assoc_tlv_buf));
141 priv->assoc_tlv_buf_len = 0;
142 memset(&priv->wps, 0, sizeof(priv->wps));
143 memset(&priv->gen_ie_buf, 0, sizeof(priv->gen_ie_buf));
144 priv->gen_ie_buf_len = 0;
145 memset(priv->vs_ie, 0, sizeof(priv->vs_ie));
146
147 priv->wmm_required = true;
148 priv->wmm_enabled = false;
149 priv->wmm_qosinfo = 0;
150 priv->curr_bcn_buf = NULL;
151 priv->curr_bcn_size = 0;
152 priv->wps_ie = NULL;
153 priv->wps_ie_len = 0;
154 priv->ap_11n_enabled = 0;
155 memset(&priv->roc_cfg, 0, sizeof(priv->roc_cfg));
156
157 priv->scan_block = false;
158
159 priv->csa_chan = 0;
160 priv->csa_expire_time = 0;
161 priv->del_list_idx = 0;
162 priv->hs2_enabled = false;
163 priv->check_tdls_tx = false;
164 memcpy(priv->tos_to_tid_inv, tos_to_tid_inv, MAX_NUM_TID);
165
166 mwifiex_init_11h_params(priv);
167
168 return mwifiex_add_bss_prio_tbl(priv);
169 }
170
171 /*
172 * This function allocates buffers for members of the adapter
173 * structure.
174 *
175 * The memory allocated includes scan table, command buffers, and
176 * sleep confirm command buffer. In addition, the queues are
177 * also initialized.
178 */
mwifiex_allocate_adapter(struct mwifiex_adapter * adapter)179 static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter)
180 {
181 int ret;
182
183 /* Allocate command buffer */
184 ret = mwifiex_alloc_cmd_buffer(adapter);
185 if (ret) {
186 mwifiex_dbg(adapter, ERROR,
187 "%s: failed to alloc cmd buffer\n",
188 __func__);
189 return -1;
190 }
191
192 adapter->sleep_cfm =
193 dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm)
194 + INTF_HEADER_LEN);
195
196 if (!adapter->sleep_cfm) {
197 mwifiex_dbg(adapter, ERROR,
198 "%s: failed to alloc sleep cfm\t"
199 " cmd buffer\n", __func__);
200 return -1;
201 }
202 skb_reserve(adapter->sleep_cfm, INTF_HEADER_LEN);
203
204 return 0;
205 }
206
207 /*
208 * This function initializes the adapter structure and sets default
209 * values to the members of adapter.
210 *
211 * This also initializes the WMM related parameters in the driver private
212 * structures.
213 */
mwifiex_init_adapter(struct mwifiex_adapter * adapter)214 static void mwifiex_init_adapter(struct mwifiex_adapter *adapter)
215 {
216 struct mwifiex_opt_sleep_confirm *sleep_cfm_buf = NULL;
217
218 skb_put(adapter->sleep_cfm, sizeof(struct mwifiex_opt_sleep_confirm));
219
220 adapter->cmd_sent = false;
221
222 if (adapter->iface_type == MWIFIEX_SDIO)
223 adapter->data_sent = true;
224 else
225 adapter->data_sent = false;
226
227 if (adapter->iface_type == MWIFIEX_USB)
228 adapter->intf_hdr_len = 0;
229 else
230 adapter->intf_hdr_len = INTF_HEADER_LEN;
231
232 adapter->cmd_resp_received = false;
233 adapter->event_received = false;
234 adapter->data_received = false;
235
236 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
237
238 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
239
240 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
241 adapter->ps_state = PS_STATE_AWAKE;
242 adapter->need_to_wakeup = false;
243
244 adapter->scan_mode = HostCmd_BSS_MODE_ANY;
245 adapter->specific_scan_time = MWIFIEX_SPECIFIC_SCAN_CHAN_TIME;
246 adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME;
247 adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME;
248 adapter->scan_chan_gap_time = MWIFIEX_DEF_SCAN_CHAN_GAP_TIME;
249
250 adapter->scan_probes = 1;
251
252 adapter->multiple_dtim = 1;
253
254 adapter->local_listen_interval = 0; /* default value in firmware
255 will be used */
256
257 adapter->is_deep_sleep = false;
258
259 adapter->delay_null_pkt = false;
260 adapter->delay_to_ps = 1000;
261 adapter->enhanced_ps_mode = PS_MODE_AUTO;
262
263 adapter->gen_null_pkt = false; /* Disable NULL Pkg generation by
264 default */
265 adapter->pps_uapsd_mode = false; /* Disable pps/uapsd mode by
266 default */
267 adapter->pm_wakeup_card_req = false;
268
269 adapter->pm_wakeup_fw_try = false;
270
271 adapter->curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
272
273 clear_bit(MWIFIEX_IS_HS_CONFIGURED, &adapter->work_flags);
274 adapter->hs_cfg.conditions = cpu_to_le32(HS_CFG_COND_DEF);
275 adapter->hs_cfg.gpio = HS_CFG_GPIO_DEF;
276 adapter->hs_cfg.gap = HS_CFG_GAP_DEF;
277 adapter->hs_activated = false;
278
279 memset(adapter->event_body, 0, sizeof(adapter->event_body));
280 adapter->hw_dot_11n_dev_cap = 0;
281 adapter->hw_dev_mcs_support = 0;
282 adapter->sec_chan_offset = 0;
283 adapter->adhoc_11n_enabled = false;
284
285 mwifiex_wmm_init(adapter);
286 atomic_set(&adapter->tx_hw_pending, 0);
287
288 sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *)
289 adapter->sleep_cfm->data;
290 memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len);
291 sleep_cfm_buf->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH);
292 sleep_cfm_buf->size = cpu_to_le16(adapter->sleep_cfm->len);
293 sleep_cfm_buf->result = 0;
294 sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM);
295 sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED);
296
297 memset(&adapter->sleep_params, 0, sizeof(adapter->sleep_params));
298 memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period));
299 adapter->tx_lock_flag = false;
300 adapter->null_pkt_interval = 0;
301 adapter->fw_bands = 0;
302 adapter->config_bands = 0;
303 adapter->adhoc_start_band = 0;
304 adapter->scan_channels = NULL;
305 adapter->fw_release_number = 0;
306 adapter->fw_cap_info = 0;
307 memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf));
308 adapter->event_cause = 0;
309 adapter->region_code = 0;
310 adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT;
311 adapter->adhoc_awake_period = 0;
312 memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter));
313 adapter->arp_filter_size = 0;
314 adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX;
315 adapter->mfg_mode = mfg_mode;
316 adapter->key_api_major_ver = 0;
317 adapter->key_api_minor_ver = 0;
318 eth_broadcast_addr(adapter->perm_addr);
319 adapter->iface_limit.sta_intf = MWIFIEX_MAX_STA_NUM;
320 adapter->iface_limit.uap_intf = MWIFIEX_MAX_UAP_NUM;
321 adapter->iface_limit.p2p_intf = MWIFIEX_MAX_P2P_NUM;
322 adapter->active_scan_triggered = false;
323 timer_setup(&adapter->wakeup_timer, wakeup_timer_fn, 0);
324 adapter->devdump_len = 0;
325 timer_setup(&adapter->devdump_timer, fw_dump_timer_fn, 0);
326 }
327
328 /*
329 * This function sets trans_start per tx_queue
330 */
mwifiex_set_trans_start(struct net_device * dev)331 void mwifiex_set_trans_start(struct net_device *dev)
332 {
333 int i;
334
335 for (i = 0; i < dev->num_tx_queues; i++)
336 netdev_get_tx_queue(dev, i)->trans_start = jiffies;
337
338 netif_trans_update(dev);
339 }
340
341 /*
342 * This function wakes up all queues in net_device
343 */
mwifiex_wake_up_net_dev_queue(struct net_device * netdev,struct mwifiex_adapter * adapter)344 void mwifiex_wake_up_net_dev_queue(struct net_device *netdev,
345 struct mwifiex_adapter *adapter)
346 {
347 unsigned long dev_queue_flags;
348
349 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags);
350 netif_tx_wake_all_queues(netdev);
351 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags);
352 }
353
354 /*
355 * This function stops all queues in net_device
356 */
mwifiex_stop_net_dev_queue(struct net_device * netdev,struct mwifiex_adapter * adapter)357 void mwifiex_stop_net_dev_queue(struct net_device *netdev,
358 struct mwifiex_adapter *adapter)
359 {
360 unsigned long dev_queue_flags;
361
362 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags);
363 netif_tx_stop_all_queues(netdev);
364 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags);
365 }
366
367 /*
368 * This function invalidates the list heads.
369 */
mwifiex_invalidate_lists(struct mwifiex_adapter * adapter)370 static void mwifiex_invalidate_lists(struct mwifiex_adapter *adapter)
371 {
372 struct mwifiex_private *priv;
373 s32 i, j;
374
375 list_del(&adapter->cmd_free_q);
376 list_del(&adapter->cmd_pending_q);
377 list_del(&adapter->scan_pending_q);
378
379 for (i = 0; i < adapter->priv_num; i++)
380 list_del(&adapter->bss_prio_tbl[i].bss_prio_head);
381
382 for (i = 0; i < adapter->priv_num; i++) {
383 if (adapter->priv[i]) {
384 priv = adapter->priv[i];
385 for (j = 0; j < MAX_NUM_TID; ++j)
386 list_del(&priv->wmm.tid_tbl_ptr[j].ra_list);
387 list_del(&priv->tx_ba_stream_tbl_ptr);
388 list_del(&priv->rx_reorder_tbl_ptr);
389 list_del(&priv->sta_list);
390 list_del(&priv->auto_tdls_list);
391 }
392 }
393 }
394
395 /*
396 * This function performs cleanup for adapter structure.
397 *
398 * The cleanup is done recursively, by canceling all pending
399 * commands, freeing the member buffers previously allocated
400 * (command buffers, scan table buffer, sleep confirm command
401 * buffer), stopping the timers and calling the cleanup routines
402 * for every interface.
403 */
404 static void
mwifiex_adapter_cleanup(struct mwifiex_adapter * adapter)405 mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter)
406 {
407 del_timer(&adapter->wakeup_timer);
408 del_timer_sync(&adapter->devdump_timer);
409 mwifiex_cancel_all_pending_cmd(adapter);
410 wake_up_interruptible(&adapter->cmd_wait_q.wait);
411 wake_up_interruptible(&adapter->hs_activate_wait_q);
412 }
413
mwifiex_free_cmd_buffers(struct mwifiex_adapter * adapter)414 void mwifiex_free_cmd_buffers(struct mwifiex_adapter *adapter)
415 {
416 mwifiex_invalidate_lists(adapter);
417
418 /* Free command buffer */
419 mwifiex_dbg(adapter, INFO, "info: free cmd buffer\n");
420 mwifiex_free_cmd_buffer(adapter);
421
422 if (adapter->sleep_cfm)
423 dev_kfree_skb_any(adapter->sleep_cfm);
424 }
425
426 /*
427 * This function intializes the lock variables and
428 * the list heads.
429 */
mwifiex_init_lock_list(struct mwifiex_adapter * adapter)430 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter)
431 {
432 struct mwifiex_private *priv;
433 s32 i, j;
434
435 spin_lock_init(&adapter->int_lock);
436 spin_lock_init(&adapter->main_proc_lock);
437 spin_lock_init(&adapter->mwifiex_cmd_lock);
438 spin_lock_init(&adapter->queue_lock);
439 for (i = 0; i < adapter->priv_num; i++) {
440 if (adapter->priv[i]) {
441 priv = adapter->priv[i];
442 spin_lock_init(&priv->wmm.ra_list_spinlock);
443 spin_lock_init(&priv->curr_bcn_buf_lock);
444 spin_lock_init(&priv->sta_list_spinlock);
445 spin_lock_init(&priv->auto_tdls_lock);
446 }
447 }
448
449 /* Initialize cmd_free_q */
450 INIT_LIST_HEAD(&adapter->cmd_free_q);
451 /* Initialize cmd_pending_q */
452 INIT_LIST_HEAD(&adapter->cmd_pending_q);
453 /* Initialize scan_pending_q */
454 INIT_LIST_HEAD(&adapter->scan_pending_q);
455
456 spin_lock_init(&adapter->cmd_free_q_lock);
457 spin_lock_init(&adapter->cmd_pending_q_lock);
458 spin_lock_init(&adapter->scan_pending_q_lock);
459 spin_lock_init(&adapter->rx_proc_lock);
460
461 skb_queue_head_init(&adapter->rx_data_q);
462 skb_queue_head_init(&adapter->tx_data_q);
463
464 for (i = 0; i < adapter->priv_num; ++i) {
465 INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head);
466 spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock);
467 }
468
469 for (i = 0; i < adapter->priv_num; i++) {
470 if (!adapter->priv[i])
471 continue;
472 priv = adapter->priv[i];
473 for (j = 0; j < MAX_NUM_TID; ++j)
474 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list);
475 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr);
476 INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr);
477 INIT_LIST_HEAD(&priv->sta_list);
478 INIT_LIST_HEAD(&priv->auto_tdls_list);
479 skb_queue_head_init(&priv->tdls_txq);
480 skb_queue_head_init(&priv->bypass_txq);
481
482 spin_lock_init(&priv->tx_ba_stream_tbl_lock);
483 spin_lock_init(&priv->rx_reorder_tbl_lock);
484
485 spin_lock_init(&priv->ack_status_lock);
486 idr_init(&priv->ack_status_frames);
487 }
488
489 return 0;
490 }
491
492 /*
493 * This function initializes the firmware.
494 *
495 * The following operations are performed sequentially -
496 * - Allocate adapter structure
497 * - Initialize the adapter structure
498 * - Initialize the private structure
499 * - Add BSS priority tables to the adapter structure
500 * - For each interface, send the init commands to firmware
501 * - Send the first command in command pending queue, if available
502 */
mwifiex_init_fw(struct mwifiex_adapter * adapter)503 int mwifiex_init_fw(struct mwifiex_adapter *adapter)
504 {
505 int ret;
506 struct mwifiex_private *priv;
507 u8 i, first_sta = true;
508 int is_cmd_pend_q_empty;
509 unsigned long flags;
510
511 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
512
513 /* Allocate memory for member of adapter structure */
514 ret = mwifiex_allocate_adapter(adapter);
515 if (ret)
516 return -1;
517
518 /* Initialize adapter structure */
519 mwifiex_init_adapter(adapter);
520
521 for (i = 0; i < adapter->priv_num; i++) {
522 if (adapter->priv[i]) {
523 priv = adapter->priv[i];
524
525 /* Initialize private structure */
526 ret = mwifiex_init_priv(priv);
527 if (ret)
528 return -1;
529 }
530 }
531 if (adapter->mfg_mode) {
532 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
533 ret = -EINPROGRESS;
534 } else {
535 for (i = 0; i < adapter->priv_num; i++) {
536 if (adapter->priv[i]) {
537 ret = mwifiex_sta_init_cmd(adapter->priv[i],
538 first_sta, true);
539 if (ret == -1)
540 return -1;
541
542 first_sta = false;
543 }
544
545
546
547 }
548 }
549
550 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
551 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
552 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
553 if (!is_cmd_pend_q_empty) {
554 /* Send the first command in queue and return */
555 if (mwifiex_main_process(adapter) != -1)
556 ret = -EINPROGRESS;
557 } else {
558 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
559 }
560
561 return ret;
562 }
563
564 /*
565 * This function deletes the BSS priority tables.
566 *
567 * The function traverses through all the allocated BSS priority nodes
568 * in every BSS priority table and frees them.
569 */
mwifiex_delete_bss_prio_tbl(struct mwifiex_private * priv)570 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv)
571 {
572 int i;
573 struct mwifiex_adapter *adapter = priv->adapter;
574 struct mwifiex_bss_prio_node *bssprio_node, *tmp_node;
575 struct list_head *head;
576 spinlock_t *lock; /* bss priority lock */
577 unsigned long flags;
578
579 for (i = 0; i < adapter->priv_num; ++i) {
580 head = &adapter->bss_prio_tbl[i].bss_prio_head;
581 lock = &adapter->bss_prio_tbl[i].bss_prio_lock;
582 mwifiex_dbg(adapter, INFO,
583 "info: delete BSS priority table,\t"
584 "bss_type = %d, bss_num = %d, i = %d,\t"
585 "head = %p\n",
586 priv->bss_type, priv->bss_num, i, head);
587
588 {
589 spin_lock_irqsave(lock, flags);
590 list_for_each_entry_safe(bssprio_node, tmp_node, head,
591 list) {
592 if (bssprio_node->priv == priv) {
593 mwifiex_dbg(adapter, INFO,
594 "info: Delete\t"
595 "node %p, next = %p\n",
596 bssprio_node, tmp_node);
597 list_del(&bssprio_node->list);
598 kfree(bssprio_node);
599 }
600 }
601 spin_unlock_irqrestore(lock, flags);
602 }
603 }
604 }
605
606 /*
607 * This function frees the private structure, including cleans
608 * up the TX and RX queues and frees the BSS priority tables.
609 */
mwifiex_free_priv(struct mwifiex_private * priv)610 void mwifiex_free_priv(struct mwifiex_private *priv)
611 {
612 mwifiex_clean_txrx(priv);
613 mwifiex_delete_bss_prio_tbl(priv);
614 mwifiex_free_curr_bcn(priv);
615 }
616
617 /*
618 * This function is used to shutdown the driver.
619 *
620 * The following operations are performed sequentially -
621 * - Check if already shut down
622 * - Make sure the main process has stopped
623 * - Clean up the Tx and Rx queues
624 * - Delete BSS priority tables
625 * - Free the adapter
626 * - Notify completion
627 */
628 void
mwifiex_shutdown_drv(struct mwifiex_adapter * adapter)629 mwifiex_shutdown_drv(struct mwifiex_adapter *adapter)
630 {
631 struct mwifiex_private *priv;
632 s32 i;
633 unsigned long flags;
634 struct sk_buff *skb;
635
636 /* mwifiex already shutdown */
637 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
638 return;
639
640 /* cancel current command */
641 if (adapter->curr_cmd) {
642 mwifiex_dbg(adapter, WARN,
643 "curr_cmd is still in processing\n");
644 del_timer_sync(&adapter->cmd_timer);
645 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd);
646 adapter->curr_cmd = NULL;
647 }
648
649 /* shut down mwifiex */
650 mwifiex_dbg(adapter, MSG,
651 "info: shutdown mwifiex...\n");
652
653 /* Clean up Tx/Rx queues and delete BSS priority table */
654 for (i = 0; i < adapter->priv_num; i++) {
655 if (adapter->priv[i]) {
656 priv = adapter->priv[i];
657
658 mwifiex_clean_auto_tdls(priv);
659 mwifiex_abort_cac(priv);
660 mwifiex_free_priv(priv);
661 }
662 }
663
664 atomic_set(&adapter->tx_queued, 0);
665 while ((skb = skb_dequeue(&adapter->tx_data_q)))
666 mwifiex_write_data_complete(adapter, skb, 0, 0);
667
668 spin_lock_irqsave(&adapter->rx_proc_lock, flags);
669
670 while ((skb = skb_dequeue(&adapter->rx_data_q))) {
671 struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb);
672
673 atomic_dec(&adapter->rx_pending);
674 priv = adapter->priv[rx_info->bss_num];
675 if (priv)
676 priv->stats.rx_dropped++;
677
678 dev_kfree_skb_any(skb);
679 }
680
681 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
682
683 mwifiex_adapter_cleanup(adapter);
684
685 adapter->hw_status = MWIFIEX_HW_STATUS_NOT_READY;
686 }
687
688 /*
689 * This function downloads the firmware to the card.
690 *
691 * The actual download is preceded by two sanity checks -
692 * - Check if firmware is already running
693 * - Check if the interface is the winner to download the firmware
694 *
695 * ...and followed by another -
696 * - Check if the firmware is downloaded successfully
697 *
698 * After download is successfully completed, the host interrupts are enabled.
699 */
mwifiex_dnld_fw(struct mwifiex_adapter * adapter,struct mwifiex_fw_image * pmfw)700 int mwifiex_dnld_fw(struct mwifiex_adapter *adapter,
701 struct mwifiex_fw_image *pmfw)
702 {
703 int ret;
704 u32 poll_num = 1;
705
706 if (adapter->if_ops.check_fw_status) {
707 /* check if firmware is already running */
708 ret = adapter->if_ops.check_fw_status(adapter, poll_num);
709 if (!ret) {
710 mwifiex_dbg(adapter, MSG,
711 "WLAN FW already running! Skip FW dnld\n");
712 return 0;
713 }
714 }
715
716 /* check if we are the winner for downloading FW */
717 if (adapter->if_ops.check_winner_status) {
718 adapter->winner = 0;
719 ret = adapter->if_ops.check_winner_status(adapter);
720
721 poll_num = MAX_FIRMWARE_POLL_TRIES;
722 if (ret) {
723 mwifiex_dbg(adapter, MSG,
724 "WLAN read winner status failed!\n");
725 return ret;
726 }
727
728 if (!adapter->winner) {
729 mwifiex_dbg(adapter, MSG,
730 "WLAN is not the winner! Skip FW dnld\n");
731 goto poll_fw;
732 }
733 }
734
735 if (pmfw) {
736 /* Download firmware with helper */
737 ret = adapter->if_ops.prog_fw(adapter, pmfw);
738 if (ret) {
739 mwifiex_dbg(adapter, ERROR,
740 "prog_fw failed ret=%#x\n", ret);
741 return ret;
742 }
743 }
744
745 poll_fw:
746 /* Check if the firmware is downloaded successfully or not */
747 ret = adapter->if_ops.check_fw_status(adapter, poll_num);
748 if (ret)
749 mwifiex_dbg(adapter, ERROR,
750 "FW failed to be active in time\n");
751
752 return ret;
753 }
754 EXPORT_SYMBOL_GPL(mwifiex_dnld_fw);
755
