1 /*
2 * NXP Wireless LAN device driver: major functions
3 *
4 * Copyright 2011-2020 NXP
5 *
6 * This software file (the "File") is distributed by NXP
7 * 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 <linux/suspend.h>
21
22 #include "main.h"
23 #include "wmm.h"
24 #include "cfg80211.h"
25 #include "11n.h"
26
27 #define VERSION "1.0"
28 #define MFG_FIRMWARE "mwifiex_mfg.bin"
29
30 static unsigned int debug_mask = MWIFIEX_DEFAULT_DEBUG_MASK;
31 module_param(debug_mask, uint, 0);
32 MODULE_PARM_DESC(debug_mask, "bitmap for debug flags");
33
34 const char driver_version[] = "mwifiex " VERSION " (%s) ";
35 static char *cal_data_cfg;
36 module_param(cal_data_cfg, charp, 0);
37
38 static unsigned short driver_mode;
39 module_param(driver_mode, ushort, 0);
40 MODULE_PARM_DESC(driver_mode,
41 "station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7");
42
43 bool mfg_mode;
44 module_param(mfg_mode, bool, 0);
45 MODULE_PARM_DESC(mfg_mode, "manufacturing mode enable:1, disable:0");
46
47 bool aggr_ctrl;
48 module_param(aggr_ctrl, bool, 0000);
49 MODULE_PARM_DESC(aggr_ctrl, "usb tx aggregation enable:1, disable:0");
50
51 const u16 mwifiex_1d_to_wmm_queue[8] = { 1, 0, 0, 1, 2, 2, 3, 3 };
52
53 /*
54 * This function registers the device and performs all the necessary
55 * initializations.
56 *
57 * The following initialization operations are performed -
58 * - Allocate adapter structure
59 * - Save interface specific operations table in adapter
60 * - Call interface specific initialization routine
61 * - Allocate private structures
62 * - Set default adapter structure parameters
63 * - Initialize locks
64 *
65 * In case of any errors during inittialization, this function also ensures
66 * proper cleanup before exiting.
67 */
mwifiex_register(void * card,struct device * dev,struct mwifiex_if_ops * if_ops,void ** padapter)68 static int mwifiex_register(void *card, struct device *dev,
69 struct mwifiex_if_ops *if_ops, void **padapter)
70 {
71 struct mwifiex_adapter *adapter;
72 int i;
73
74 adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL);
75 if (!adapter)
76 return -ENOMEM;
77
78 *padapter = adapter;
79 adapter->dev = dev;
80 adapter->card = card;
81
82 /* Save interface specific operations in adapter */
83 memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));
84 adapter->debug_mask = debug_mask;
85
86 /* card specific initialization has been deferred until now .. */
87 if (adapter->if_ops.init_if)
88 if (adapter->if_ops.init_if(adapter))
89 goto error;
90
91 adapter->priv_num = 0;
92
93 for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) {
94 /* Allocate memory for private structure */
95 adapter->priv[i] =
96 kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL);
97 if (!adapter->priv[i])
98 goto error;
99
100 adapter->priv[i]->adapter = adapter;
101 adapter->priv_num++;
102 }
103 mwifiex_init_lock_list(adapter);
104
105 timer_setup(&adapter->cmd_timer, mwifiex_cmd_timeout_func, 0);
106
107 return 0;
108
109 error:
110 mwifiex_dbg(adapter, ERROR,
111 "info: leave mwifiex_register with error\n");
112
113 for (i = 0; i < adapter->priv_num; i++)
114 kfree(adapter->priv[i]);
115
116 kfree(adapter);
117
118 return -1;
119 }
120
121 /*
122 * This function unregisters the device and performs all the necessary
123 * cleanups.
124 *
125 * The following cleanup operations are performed -
126 * - Free the timers
127 * - Free beacon buffers
128 * - Free private structures
129 * - Free adapter structure
130 */
mwifiex_unregister(struct mwifiex_adapter * adapter)131 static int mwifiex_unregister(struct mwifiex_adapter *adapter)
132 {
133 s32 i;
134
135 if (adapter->if_ops.cleanup_if)
136 adapter->if_ops.cleanup_if(adapter);
137
138 del_timer_sync(&adapter->cmd_timer);
139
140 /* Free private structures */
141 for (i = 0; i < adapter->priv_num; i++) {
142 if (adapter->priv[i]) {
143 mwifiex_free_curr_bcn(adapter->priv[i]);
144 kfree(adapter->priv[i]);
145 }
146 }
147
148 if (adapter->nd_info) {
149 for (i = 0 ; i < adapter->nd_info->n_matches ; i++)
150 kfree(adapter->nd_info->matches[i]);
151 kfree(adapter->nd_info);
152 adapter->nd_info = NULL;
153 }
154
155 kfree(adapter->regd);
156
157 kfree(adapter);
158 return 0;
159 }
160
mwifiex_queue_main_work(struct mwifiex_adapter * adapter)161 void mwifiex_queue_main_work(struct mwifiex_adapter *adapter)
162 {
163 unsigned long flags;
164
165 spin_lock_irqsave(&adapter->main_proc_lock, flags);
166 if (adapter->mwifiex_processing) {
167 adapter->more_task_flag = true;
168 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
169 } else {
170 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
171 queue_work(adapter->workqueue, &adapter->main_work);
172 }
173 }
174 EXPORT_SYMBOL_GPL(mwifiex_queue_main_work);
175
mwifiex_queue_rx_work(struct mwifiex_adapter * adapter)176 static void mwifiex_queue_rx_work(struct mwifiex_adapter *adapter)
177 {
178 spin_lock_bh(&adapter->rx_proc_lock);
179 if (adapter->rx_processing) {
180 spin_unlock_bh(&adapter->rx_proc_lock);
181 } else {
182 spin_unlock_bh(&adapter->rx_proc_lock);
183 queue_work(adapter->rx_workqueue, &adapter->rx_work);
184 }
185 }
186
mwifiex_process_rx(struct mwifiex_adapter * adapter)187 static int mwifiex_process_rx(struct mwifiex_adapter *adapter)
188 {
189 struct sk_buff *skb;
190 struct mwifiex_rxinfo *rx_info;
191
192 spin_lock_bh(&adapter->rx_proc_lock);
193 if (adapter->rx_processing || adapter->rx_locked) {
194 spin_unlock_bh(&adapter->rx_proc_lock);
195 goto exit_rx_proc;
196 } else {
197 adapter->rx_processing = true;
198 spin_unlock_bh(&adapter->rx_proc_lock);
199 }
200
201 /* Check for Rx data */
202 while ((skb = skb_dequeue(&adapter->rx_data_q))) {
203 atomic_dec(&adapter->rx_pending);
204 if ((adapter->delay_main_work ||
205 adapter->iface_type == MWIFIEX_USB) &&
206 (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {
207 if (adapter->if_ops.submit_rem_rx_urbs)
208 adapter->if_ops.submit_rem_rx_urbs(adapter);
209 adapter->delay_main_work = false;
210 mwifiex_queue_main_work(adapter);
211 }
212 rx_info = MWIFIEX_SKB_RXCB(skb);
213 if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) {
214 if (adapter->if_ops.deaggr_pkt)
215 adapter->if_ops.deaggr_pkt(adapter, skb);
216 dev_kfree_skb_any(skb);
217 } else {
218 mwifiex_handle_rx_packet(adapter, skb);
219 }
220 }
221 spin_lock_bh(&adapter->rx_proc_lock);
222 adapter->rx_processing = false;
223 spin_unlock_bh(&adapter->rx_proc_lock);
224
225 exit_rx_proc:
226 return 0;
227 }
228
229 /*
230 * The main process.
231 *
232 * This function is the main procedure of the driver and handles various driver
233 * operations. It runs in a loop and provides the core functionalities.
234 *
235 * The main responsibilities of this function are -
236 * - Ensure concurrency control
237 * - Handle pending interrupts and call interrupt handlers
238 * - Wake up the card if required
239 * - Handle command responses and call response handlers
240 * - Handle events and call event handlers
241 * - Execute pending commands
242 * - Transmit pending data packets
243 */
mwifiex_main_process(struct mwifiex_adapter * adapter)244 int mwifiex_main_process(struct mwifiex_adapter *adapter)
245 {
246 int ret = 0;
247 unsigned long flags;
248
249 spin_lock_irqsave(&adapter->main_proc_lock, flags);
250
251 /* Check if already processing */
252 if (adapter->mwifiex_processing || adapter->main_locked) {
253 adapter->more_task_flag = true;
254 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
255 return 0;
256 } else {
257 adapter->mwifiex_processing = true;
258 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
259 }
260 process_start:
261 do {
262 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
263 break;
264
265 /* For non-USB interfaces, If we process interrupts first, it
266 * would increase RX pending even further. Avoid this by
267 * checking if rx_pending has crossed high threshold and
268 * schedule rx work queue and then process interrupts.
269 * For USB interface, there are no interrupts. We already have
270 * HIGH_RX_PENDING check in usb.c
271 */
272 if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING &&
273 adapter->iface_type != MWIFIEX_USB) {
274 adapter->delay_main_work = true;
275 mwifiex_queue_rx_work(adapter);
276 break;
277 }
278
279 /* Handle pending interrupt if any */
280 if (adapter->int_status) {
281 if (adapter->hs_activated)
282 mwifiex_process_hs_config(adapter);
283 if (adapter->if_ops.process_int_status)
284 adapter->if_ops.process_int_status(adapter);
285 }
286
287 if (adapter->rx_work_enabled && adapter->data_received)
288 mwifiex_queue_rx_work(adapter);
289
290 /* Need to wake up the card ? */
291 if ((adapter->ps_state == PS_STATE_SLEEP) &&
292 (adapter->pm_wakeup_card_req &&
293 !adapter->pm_wakeup_fw_try) &&
294 (is_command_pending(adapter) ||
295 !skb_queue_empty(&adapter->tx_data_q) ||
296 !mwifiex_bypass_txlist_empty(adapter) ||
297 !mwifiex_wmm_lists_empty(adapter))) {
298 adapter->pm_wakeup_fw_try = true;
299 mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3));
300 adapter->if_ops.wakeup(adapter);
301 continue;
302 }
303
304 if (IS_CARD_RX_RCVD(adapter)) {
305 adapter->data_received = false;
306 adapter->pm_wakeup_fw_try = false;
307 del_timer(&adapter->wakeup_timer);
308 if (adapter->ps_state == PS_STATE_SLEEP)
309 adapter->ps_state = PS_STATE_AWAKE;
310 } else {
311 /* We have tried to wakeup the card already */
312 if (adapter->pm_wakeup_fw_try)
313 break;
314 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
315 mwifiex_check_ps_cond(adapter);
316
317 if (adapter->ps_state != PS_STATE_AWAKE)
318 break;
319 if (adapter->tx_lock_flag) {
320 if (adapter->iface_type == MWIFIEX_USB) {
321 if (!adapter->usb_mc_setup)
322 break;
323 } else
324 break;
325 }
326
327 if ((!adapter->scan_chan_gap_enabled &&
328 adapter->scan_processing) || adapter->data_sent ||
329 mwifiex_is_tdls_chan_switching
330 (mwifiex_get_priv(adapter,
331 MWIFIEX_BSS_ROLE_STA)) ||
332 (mwifiex_wmm_lists_empty(adapter) &&
333 mwifiex_bypass_txlist_empty(adapter) &&
334 skb_queue_empty(&adapter->tx_data_q))) {
335 if (adapter->cmd_sent || adapter->curr_cmd ||
336 !mwifiex_is_send_cmd_allowed
337 (mwifiex_get_priv(adapter,
338 MWIFIEX_BSS_ROLE_STA)) ||
339 (!is_command_pending(adapter)))
340 break;
341 }
342 }
343
344 /* Check for event */
345 if (adapter->event_received) {
346 adapter->event_received = false;
347 mwifiex_process_event(adapter);
348 }
349
350 /* Check for Cmd Resp */
351 if (adapter->cmd_resp_received) {
352 adapter->cmd_resp_received = false;
353 mwifiex_process_cmdresp(adapter);
354
355 /* call mwifiex back when init_fw is done */
356 if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) {
357 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
358 mwifiex_init_fw_complete(adapter);
359 }
360 }
361
362 /* Check if we need to confirm Sleep Request
363 received previously */
364 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
365 mwifiex_check_ps_cond(adapter);
366
367 /* * The ps_state may have been changed during processing of
368 * Sleep Request event.
369 */
370 if ((adapter->ps_state == PS_STATE_SLEEP) ||
371 (adapter->ps_state == PS_STATE_PRE_SLEEP) ||
372 (adapter->ps_state == PS_STATE_SLEEP_CFM)) {
373 continue;
374 }
375
376 if (adapter->tx_lock_flag) {
377 if (adapter->iface_type == MWIFIEX_USB) {
378 if (!adapter->usb_mc_setup)
379 continue;
380 } else
381 continue;
382 }
383
384 if (!adapter->cmd_sent && !adapter->curr_cmd &&
385 mwifiex_is_send_cmd_allowed
386 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
387 if (mwifiex_exec_next_cmd(adapter) == -1) {
388 ret = -1;
389 break;
390 }
391 }
392
393 /** If USB Multi channel setup ongoing,
394 * wait for ready to tx data.
395 */
396 if (adapter->iface_type == MWIFIEX_USB &&
397 adapter->usb_mc_setup)
398 continue;
399
400 if ((adapter->scan_chan_gap_enabled ||
401 !adapter->scan_processing) &&
402 !adapter->data_sent &&
403 !skb_queue_empty(&adapter->tx_data_q)) {
404 mwifiex_process_tx_queue(adapter);
405 if (adapter->hs_activated) {
406 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
407 &adapter->work_flags);
408 mwifiex_hs_activated_event
409 (mwifiex_get_priv
410 (adapter, MWIFIEX_BSS_ROLE_ANY),
411 false);
412 }
413 }
414
415 if ((adapter->scan_chan_gap_enabled ||
416 !adapter->scan_processing) &&
417 !adapter->data_sent &&
418 !mwifiex_bypass_txlist_empty(adapter) &&
419 !mwifiex_is_tdls_chan_switching
420 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
421 mwifiex_process_bypass_tx(adapter);
422 if (adapter->hs_activated) {
423 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
424 &adapter->work_flags);
425 mwifiex_hs_activated_event
426 (mwifiex_get_priv
427 (adapter, MWIFIEX_BSS_ROLE_ANY),
428 false);
429 }
430 }
431
432 if ((adapter->scan_chan_gap_enabled ||
433 !adapter->scan_processing) &&
434 !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) &&
435 !mwifiex_is_tdls_chan_switching
436 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
437 mwifiex_wmm_process_tx(adapter);
438 if (adapter->hs_activated) {
439 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
440 &adapter->work_flags);
441 mwifiex_hs_activated_event
442 (mwifiex_get_priv
443 (adapter, MWIFIEX_BSS_ROLE_ANY),
444 false);
445 }
446 }
447
448 if (adapter->delay_null_pkt && !adapter->cmd_sent &&
449 !adapter->curr_cmd && !is_command_pending(adapter) &&
450 (mwifiex_wmm_lists_empty(adapter) &&
451 mwifiex_bypass_txlist_empty(adapter) &&
452 skb_queue_empty(&adapter->tx_data_q))) {
453 if (!mwifiex_send_null_packet
454 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
455 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
456 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) {
457 adapter->delay_null_pkt = false;
458 adapter->ps_state = PS_STATE_SLEEP;
459 }
460 break;
461 }
462 } while (true);
463
464 spin_lock_irqsave(&adapter->main_proc_lock, flags);
465 if (adapter->more_task_flag) {
466 adapter->more_task_flag = false;
467 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
468 goto process_start;
469 }
470 adapter->mwifiex_processing = false;
471 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
472
473 return ret;
474 }
475 EXPORT_SYMBOL_GPL(mwifiex_main_process);
476
477 /*
478 * This function frees the adapter structure.
479 *
480 * Additionally, this closes the netlink socket, frees the timers
481 * and private structures.
482 */
mwifiex_free_adapter(struct mwifiex_adapter * adapter)483 static void mwifiex_free_adapter(struct mwifiex_adapter *adapter)
484 {
485 if (!adapter) {
486 pr_err("%s: adapter is NULL\n", __func__);
487 return;
488 }
489
490 mwifiex_unregister(adapter);
491 pr_debug("info: %s: free adapter\n", __func__);
492 }
493
494 /*
495 * This function cancels all works in the queue and destroys
496 * the main workqueue.
497 */
mwifiex_terminate_workqueue(struct mwifiex_adapter * adapter)498 static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter)
499 {
500 if (adapter->workqueue) {
501 flush_workqueue(adapter->workqueue);
502 destroy_workqueue(adapter->workqueue);
503 adapter->workqueue = NULL;
504 }
505
506 if (adapter->rx_workqueue) {
507 flush_workqueue(adapter->rx_workqueue);
508 destroy_workqueue(adapter->rx_workqueue);
509 adapter->rx_workqueue = NULL;
510 }
511 }
512
513 /*
514 * This function gets firmware and initializes it.
515 *
516 * The main initialization steps followed are -
517 * - Download the correct firmware to card
518 * - Issue the init commands to firmware
519 */
_mwifiex_fw_dpc(const struct firmware * firmware,void * context)520 static int _mwifiex_fw_dpc(const struct firmware *firmware, void *context)
521 {
522 int ret;
523 char fmt[64];
524 struct mwifiex_adapter *adapter = context;
525 struct mwifiex_fw_image fw;
526 bool init_failed = false;
527 struct wireless_dev *wdev;
528 struct completion *fw_done = adapter->fw_done;
529
530 if (!firmware) {
531 mwifiex_dbg(adapter, ERROR,
532 "Failed to get firmware %s\n", adapter->fw_name);
533 goto err_dnld_fw;
534 }
535
536 memset(&fw, 0, sizeof(struct mwifiex_fw_image));
537 adapter->firmware = firmware;
538 fw.fw_buf = (u8 *) adapter->firmware->data;
539 fw.fw_len = adapter->firmware->size;
540
541 if (adapter->if_ops.dnld_fw) {
542 ret = adapter->if_ops.dnld_fw(adapter, &fw);
543 } else {
544 ret = mwifiex_dnld_fw(adapter, &fw);
545 }
546
547 if (ret == -1)
548 goto err_dnld_fw;
549
550 mwifiex_dbg(adapter, MSG, "WLAN FW is active\n");
551
552 if (cal_data_cfg) {
553 if ((request_firmware(&adapter->cal_data, cal_data_cfg,
554 adapter->dev)) < 0)
555 mwifiex_dbg(adapter, ERROR,
556 "Cal data request_firmware() failed\n");
557 }
558
559 /* enable host interrupt after fw dnld is successful */
560 if (adapter->if_ops.enable_int) {
561 if (adapter->if_ops.enable_int(adapter))
562 goto err_dnld_fw;
563 }
564
565 adapter->init_wait_q_woken = false;
566 ret = mwifiex_init_fw(adapter);
567 if (ret == -1) {
568 goto err_init_fw;
569 } else if (!ret) {
570 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
571 goto done;
572 }
573 /* Wait for mwifiex_init to complete */
574 if (!adapter->mfg_mode) {
575 wait_event_interruptible(adapter->init_wait_q,
576 adapter->init_wait_q_woken);
577 if (adapter->hw_status != MWIFIEX_HW_STATUS_READY)
578 goto err_init_fw;
579 }
580
581 if (!adapter->wiphy) {
582 if (mwifiex_register_cfg80211(adapter)) {
583 mwifiex_dbg(adapter, ERROR,
584 "cannot register with cfg80211\n");
585 goto err_init_fw;
586 }
587 }
588
589 if (mwifiex_init_channel_scan_gap(adapter)) {
590 mwifiex_dbg(adapter, ERROR,
591 "could not init channel stats table\n");
592 goto err_init_chan_scan;
593 }
594
595 if (driver_mode) {
596 driver_mode &= MWIFIEX_DRIVER_MODE_BITMASK;
597 driver_mode |= MWIFIEX_DRIVER_MODE_STA;
598 }
599
600 rtnl_lock();
601 wiphy_lock(adapter->wiphy);
602 /* Create station interface by default */
603 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM,
604 NL80211_IFTYPE_STATION, NULL);
605 if (IS_ERR(wdev)) {
606 mwifiex_dbg(adapter, ERROR,
607 "cannot create default STA interface\n");
608 wiphy_unlock(adapter->wiphy);
609 rtnl_unlock();
610 goto err_add_intf;
611 }
612
613 if (driver_mode & MWIFIEX_DRIVER_MODE_UAP) {
614 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM,
615 NL80211_IFTYPE_AP, NULL);
616 if (IS_ERR(wdev)) {
617 mwifiex_dbg(adapter, ERROR,
618 "cannot create AP interface\n");
619 wiphy_unlock(adapter->wiphy);
620 rtnl_unlock();
621 goto err_add_intf;
622 }
623 }
624
625 if (driver_mode & MWIFIEX_DRIVER_MODE_P2P) {
626 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", NET_NAME_ENUM,
627 NL80211_IFTYPE_P2P_CLIENT, NULL);
628 if (IS_ERR(wdev)) {
629 mwifiex_dbg(adapter, ERROR,
630 "cannot create p2p client interface\n");
631 wiphy_unlock(adapter->wiphy);
632 rtnl_unlock();
633 goto err_add_intf;
634 }
635 }
636 wiphy_unlock(adapter->wiphy);
637 rtnl_unlock();
638
639 mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);
640 mwifiex_dbg(adapter, MSG, "driver_version = %s\n", fmt);
641 adapter->is_up = true;
642 goto done;
643
644 err_add_intf:
645 vfree(adapter->chan_stats);
646 err_init_chan_scan:
647 wiphy_unregister(adapter->wiphy);
648 wiphy_free(adapter->wiphy);
649 err_init_fw:
650 if (adapter->if_ops.disable_int)
651 adapter->if_ops.disable_int(adapter);
652 err_dnld_fw:
653 mwifiex_dbg(adapter, ERROR,
654 "info: %s: unregister device\n", __func__);
655 if (adapter->if_ops.unregister_dev)
656 adapter->if_ops.unregister_dev(adapter);
657
658 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
659 mwifiex_terminate_workqueue(adapter);
660
661 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
662 pr_debug("info: %s: shutdown mwifiex\n", __func__);
663 mwifiex_shutdown_drv(adapter);
664 mwifiex_free_cmd_buffers(adapter);
665 }
666
667 init_failed = true;
668 done:
669 if (adapter->cal_data) {
670 release_firmware(adapter->cal_data);
671 adapter->cal_data = NULL;
672 }
673 if (adapter->firmware) {
674 release_firmware(adapter->firmware);
675 adapter->firmware = NULL;
676 }
677 if (init_failed) {
678 if (adapter->irq_wakeup >= 0)
679 device_init_wakeup(adapter->dev, false);
680 mwifiex_free_adapter(adapter);
681 }
682 /* Tell all current and future waiters we're finished */
683 complete_all(fw_done);
684
685 return init_failed ? -EIO : 0;
686 }
687
mwifiex_fw_dpc(const struct firmware * firmware,void * context)688 static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
689 {
690 _mwifiex_fw_dpc(firmware, context);
691 }
692
693 /*
694 * This function gets the firmware and (if called asynchronously) kicks off the
695 * HW init when done.
696 */
mwifiex_init_hw_fw(struct mwifiex_adapter * adapter,bool req_fw_nowait)697 static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter,
698 bool req_fw_nowait)
699 {
700 int ret;
701
702 /* Override default firmware with manufacturing one if
703 * manufacturing mode is enabled
704 */
705 if (mfg_mode) {
706 if (strlcpy(adapter->fw_name, MFG_FIRMWARE,
707 sizeof(adapter->fw_name)) >=
708 sizeof(adapter->fw_name)) {
709 pr_err("%s: fw_name too long!\n", __func__);
710 return -1;
711 }
712 }
713
714 if (req_fw_nowait) {
715 ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name,
716 adapter->dev, GFP_KERNEL, adapter,
717 mwifiex_fw_dpc);
718 } else {
719 ret = request_firmware(&adapter->firmware,
720 adapter->fw_name,
721 adapter->dev);
722 }
723
724 if (ret < 0)
725 mwifiex_dbg(adapter, ERROR, "request_firmware%s error %d\n",
726 req_fw_nowait ? "_nowait" : "", ret);
727 return ret;
728 }
729
730 /*
731 * CFG802.11 network device handler for open.
732 *
733 * Starts the data queue.
734 */
735 static int
mwifiex_open(struct net_device * dev)736 mwifiex_open(struct net_device *dev)
737 {
738 netif_carrier_off(dev);
739
740 return 0;
741 }
742
743 /*
744 * CFG802.11 network device handler for close.
745 */
746 static int
mwifiex_close(struct net_device * dev)747 mwifiex_close(struct net_device *dev)
748 {
749 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
750
751 if (priv->scan_request) {
752 struct cfg80211_scan_info info = {
753 .aborted = true,
754 };
755
756 mwifiex_dbg(priv->adapter, INFO,
757 "aborting scan on ndo_stop\n");
758 cfg80211_scan_done(priv->scan_request, &info);
759 priv->scan_request = NULL;
760 priv->scan_aborting = true;
761 }
762
763 if (priv->sched_scanning) {
764 mwifiex_dbg(priv->adapter, INFO,
765 "aborting bgscan on ndo_stop\n");
766 mwifiex_stop_bg_scan(priv);
767 cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
768 }
769
770 return 0;
771 }
772
773 static bool
mwifiex_bypass_tx_queue(struct mwifiex_private * priv,struct sk_buff * skb)774 mwifiex_bypass_tx_queue(struct mwifiex_private *priv,
775 struct sk_buff *skb)
776 {
777 struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
778
779 if (ntohs(eth_hdr->h_proto) == ETH_P_PAE ||
780 mwifiex_is_skb_mgmt_frame(skb) ||
781 (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
782 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
783 (ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) {
784 mwifiex_dbg(priv->adapter, DATA,
785 "bypass txqueue; eth type %#x, mgmt %d\n",
786 ntohs(eth_hdr->h_proto),
787 mwifiex_is_skb_mgmt_frame(skb));
788 return true;
789 }
790
791 return false;
792 }
793 /*
794 * Add buffer into wmm tx queue and queue work to transmit it.
795 */
mwifiex_queue_tx_pkt(struct mwifiex_private * priv,struct sk_buff * skb)796 int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)
797 {
798 struct netdev_queue *txq;
799 int index = mwifiex_1d_to_wmm_queue[skb->priority];
800
801 if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) {
802 txq = netdev_get_tx_queue(priv->netdev, index);
803 if (!netif_tx_queue_stopped(txq)) {
804 netif_tx_stop_queue(txq);
805 mwifiex_dbg(priv->adapter, DATA,
806 "stop queue: %d\n", index);
807 }
808 }
809
810 if (mwifiex_bypass_tx_queue(priv, skb)) {
811 atomic_inc(&priv->adapter->tx_pending);
812 atomic_inc(&priv->adapter->bypass_tx_pending);
813 mwifiex_wmm_add_buf_bypass_txqueue(priv, skb);
814 } else {
815 atomic_inc(&priv->adapter->tx_pending);
816 mwifiex_wmm_add_buf_txqueue(priv, skb);
817 }
818
819 mwifiex_queue_main_work(priv->adapter);
820
821 return 0;
822 }
823
824 struct sk_buff *
mwifiex_clone_skb_for_tx_status(struct mwifiex_private * priv,struct sk_buff * skb,u8 flag,u64 * cookie)825 mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv,
826 struct sk_buff *skb, u8 flag, u64 *cookie)
827 {
828 struct sk_buff *orig_skb = skb;
829 struct mwifiex_txinfo *tx_info, *orig_tx_info;
830
831 skb = skb_clone(skb, GFP_ATOMIC);
832 if (skb) {
833 int id;
834
835 spin_lock_bh(&priv->ack_status_lock);
836 id = idr_alloc(&priv->ack_status_frames, orig_skb,
837 1, 0x10, GFP_ATOMIC);
838 spin_unlock_bh(&priv->ack_status_lock);
839
840 if (id >= 0) {
841 tx_info = MWIFIEX_SKB_TXCB(skb);
842 tx_info->ack_frame_id = id;
843 tx_info->flags |= flag;
844 orig_tx_info = MWIFIEX_SKB_TXCB(orig_skb);
845 orig_tx_info->ack_frame_id = id;
846 orig_tx_info->flags |= flag;
847
848 if (flag == MWIFIEX_BUF_FLAG_ACTION_TX_STATUS && cookie)
849 orig_tx_info->cookie = *cookie;
850
851 } else if (skb_shared(skb)) {
852 kfree_skb(orig_skb);
853 } else {
854 kfree_skb(skb);
855 skb = orig_skb;
856 }
857 } else {
858 /* couldn't clone -- lose tx status ... */
859 skb = orig_skb;
860 }
861
862 return skb;
863 }
864
865 /*
866 * CFG802.11 network device handler for data transmission.
867 */
868 static netdev_tx_t
mwifiex_hard_start_xmit(struct sk_buff * skb,struct net_device * dev)869 mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
870 {
871 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
872 struct sk_buff *new_skb;
873 struct mwifiex_txinfo *tx_info;
874 bool multicast;
875
876 mwifiex_dbg(priv->adapter, DATA,
877 "data: %lu BSS(%d-%d): Data <= kernel\n",
878 jiffies, priv->bss_type, priv->bss_num);
879
880 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &priv->adapter->work_flags)) {
881 kfree_skb(skb);
882 priv->stats.tx_dropped++;
883 return 0;
884 }
885 if (!skb->len || (skb->len > ETH_FRAME_LEN)) {
886 mwifiex_dbg(priv->adapter, ERROR,
887 "Tx: bad skb len %d\n", skb->len);
888 kfree_skb(skb);
889 priv->stats.tx_dropped++;
890 return 0;
891 }
892 if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) {
893 mwifiex_dbg(priv->adapter, DATA,
894 "data: Tx: insufficient skb headroom %d\n",
895 skb_headroom(skb));
896 /* Insufficient skb headroom - allocate a new skb */
897 new_skb =
898 skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
899 if (unlikely(!new_skb)) {
900 mwifiex_dbg(priv->adapter, ERROR,
901 "Tx: cannot alloca new_skb\n");
902 kfree_skb(skb);
903 priv->stats.tx_dropped++;
904 return 0;
905 }
906 kfree_skb(skb);
907 skb = new_skb;
908 mwifiex_dbg(priv->adapter, INFO,
909 "info: new skb headroomd %d\n",
910 skb_headroom(skb));
911 }
912
913 tx_info = MWIFIEX_SKB_TXCB(skb);
914 memset(tx_info, 0, sizeof(*tx_info));
915 tx_info->bss_num = priv->bss_num;
916 tx_info->bss_type = priv->bss_type;
917 tx_info->pkt_len = skb->len;
918
919 multicast = is_multicast_ether_addr(skb->data);
920
921 if (unlikely(!multicast && skb->sk &&
922 skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS &&
923 priv->adapter->fw_api_ver == MWIFIEX_FW_V15))
924 skb = mwifiex_clone_skb_for_tx_status(priv,
925 skb,
926 MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS, NULL);
927
928 /* Record the current time the packet was queued; used to
929 * determine the amount of time the packet was queued in
930 * the driver before it was sent to the firmware.
931 * The delay is then sent along with the packet to the
932 * firmware for aggregate delay calculation for stats and
933 * MSDU lifetime expiry.
934 */
935 __net_timestamp(skb);
936
937 if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
938 priv->bss_type == MWIFIEX_BSS_TYPE_STA &&
939 !ether_addr_equal_unaligned(priv->cfg_bssid, skb->data)) {
940 if (priv->adapter->auto_tdls && priv->check_tdls_tx)
941 mwifiex_tdls_check_tx(priv, skb);
942 }
943
944 mwifiex_queue_tx_pkt(priv, skb);
945
946 return 0;
947 }
948
mwifiex_set_mac_address(struct mwifiex_private * priv,struct net_device * dev,bool external,u8 * new_mac)949 int mwifiex_set_mac_address(struct mwifiex_private *priv,
950 struct net_device *dev, bool external,
951 u8 *new_mac)
952 {
953 int ret;
954 u64 mac_addr, old_mac_addr;
955
956 old_mac_addr = ether_addr_to_u64(priv->curr_addr);
957
958 if (external) {
959 mac_addr = ether_addr_to_u64(new_mac);
960 } else {
961 /* Internal mac address change */
962 if (priv->bss_type == MWIFIEX_BSS_TYPE_ANY)
963 return -EOPNOTSUPP;
964
965 mac_addr = old_mac_addr;
966
967 if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) {
968 mac_addr |= BIT_ULL(MWIFIEX_MAC_LOCAL_ADMIN_BIT);
969 mac_addr += priv->bss_num;
970 } else if (priv->adapter->priv[0] != priv) {
971 /* Set mac address based on bss_type/bss_num */
972 mac_addr ^= BIT_ULL(priv->bss_type + 8);
973 mac_addr += priv->bss_num;
974 }
975 }
976
977 u64_to_ether_addr(mac_addr, priv->curr_addr);
978
979 /* Send request to firmware */
980 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
981 HostCmd_ACT_GEN_SET, 0, NULL, true);
982
983 if (ret) {
984 u64_to_ether_addr(old_mac_addr, priv->curr_addr);
985 mwifiex_dbg(priv->adapter, ERROR,
986 "set mac address failed: ret=%d\n", ret);
987 return ret;
988 }
989
990 ether_addr_copy(dev->dev_addr, priv->curr_addr);
991 return 0;
992 }
993
994 /* CFG802.11 network device handler for setting MAC address.
995 */
996 static int
mwifiex_ndo_set_mac_address(struct net_device * dev,void * addr)997 mwifiex_ndo_set_mac_address(struct net_device *dev, void *addr)
998 {
999 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1000 struct sockaddr *hw_addr = addr;
1001
1002 return mwifiex_set_mac_address(priv, dev, true, hw_addr->sa_data);
1003 }
1004
1005 /*
1006 * CFG802.11 network device handler for setting multicast list.
1007 */
mwifiex_set_multicast_list(struct net_device * dev)1008 static void mwifiex_set_multicast_list(struct net_device *dev)
1009 {
1010 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1011 struct mwifiex_multicast_list mcast_list;
1012
1013 if (dev->flags & IFF_PROMISC) {
1014 mcast_list.mode = MWIFIEX_PROMISC_MODE;
1015 } else if (dev->flags & IFF_ALLMULTI ||
1016 netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) {
1017 mcast_list.mode = MWIFIEX_ALL_MULTI_MODE;
1018 } else {
1019 mcast_list.mode = MWIFIEX_MULTICAST_MODE;
1020 mcast_list.num_multicast_addr =
1021 mwifiex_copy_mcast_addr(&mcast_list, dev);
1022 }
1023 mwifiex_request_set_multicast_list(priv, &mcast_list);
1024 }
1025
1026 /*
1027 * CFG802.11 network device handler for transmission timeout.
1028 */
1029 static void
mwifiex_tx_timeout(struct net_device * dev,unsigned int txqueue)1030 mwifiex_tx_timeout(struct net_device *dev, unsigned int txqueue)
1031 {
1032 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1033
1034 priv->num_tx_timeout++;
1035 priv->tx_timeout_cnt++;
1036 mwifiex_dbg(priv->adapter, ERROR,
1037 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
1038 jiffies, priv->tx_timeout_cnt, priv->bss_type,
1039 priv->bss_num);
1040 mwifiex_set_trans_start(dev);
1041
1042 if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&
1043 priv->adapter->if_ops.card_reset) {
1044 mwifiex_dbg(priv->adapter, ERROR,
1045 "tx_timeout_cnt exceeds threshold.\t"
1046 "Triggering card reset!\n");
1047 priv->adapter->if_ops.card_reset(priv->adapter);
1048 }
1049 }
1050
mwifiex_multi_chan_resync(struct mwifiex_adapter * adapter)1051 void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter)
1052 {
1053 struct usb_card_rec *card = adapter->card;
1054 struct mwifiex_private *priv;
1055 u16 tx_buf_size;
1056 int i, ret;
1057
1058 card->mc_resync_flag = true;
1059 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
1060 if (atomic_read(&card->port[i].tx_data_urb_pending)) {
1061 mwifiex_dbg(adapter, WARN, "pending data urb in sys\n");
1062 return;
1063 }
1064 }
1065
1066 card->mc_resync_flag = false;
1067 tx_buf_size = 0xffff;
1068 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1069 ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF,
1070 HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false);
1071 if (ret)
1072 mwifiex_dbg(adapter, ERROR,
1073 "send reconfig tx buf size cmd err\n");
1074 }
1075 EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync);
1076
mwifiex_upload_device_dump(struct mwifiex_adapter * adapter)1077 void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter)
1078 {
1079 /* Dump all the memory data into single file, a userspace script will
1080 * be used to split all the memory data to multiple files
1081 */
1082 mwifiex_dbg(adapter, MSG,
1083 "== mwifiex dump information to /sys/class/devcoredump start\n");
1084 dev_coredumpv(adapter->dev, adapter->devdump_data, adapter->devdump_len,
1085 GFP_KERNEL);
1086 mwifiex_dbg(adapter, MSG,
1087 "== mwifiex dump information to /sys/class/devcoredump end\n");
1088
1089 /* Device dump data will be freed in device coredump release function
1090 * after 5 min. Here reset adapter->devdump_data and ->devdump_len
1091 * to avoid it been accidentally reused.
1092 */
1093 adapter->devdump_data = NULL;
1094 adapter->devdump_len = 0;
1095 }
1096 EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump);
1097
mwifiex_drv_info_dump(struct mwifiex_adapter * adapter)1098 void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter)
1099 {
1100 char *p;
1101 char drv_version[64];
1102 struct usb_card_rec *cardp;
1103 struct sdio_mmc_card *sdio_card;
1104 struct mwifiex_private *priv;
1105 int i, idx;
1106 struct netdev_queue *txq;
1107 struct mwifiex_debug_info *debug_info;
1108
1109 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n");
1110
1111 p = adapter->devdump_data;
1112 strcpy(p, "========Start dump driverinfo========\n");
1113 p += strlen("========Start dump driverinfo========\n");
1114 p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
1115
1116 mwifiex_drv_get_driver_version(adapter, drv_version,
1117 sizeof(drv_version) - 1);
1118 p += sprintf(p, "driver_version = %s\n", drv_version);
1119
1120 if (adapter->iface_type == MWIFIEX_USB) {
1121 cardp = (struct usb_card_rec *)adapter->card;
1122 p += sprintf(p, "tx_cmd_urb_pending = %d\n",
1123 atomic_read(&cardp->tx_cmd_urb_pending));
1124 p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n",
1125 atomic_read(&cardp->port[0].tx_data_urb_pending));
1126 p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n",
1127 atomic_read(&cardp->port[1].tx_data_urb_pending));
1128 p += sprintf(p, "rx_cmd_urb_pending = %d\n",
1129 atomic_read(&cardp->rx_cmd_urb_pending));
1130 p += sprintf(p, "rx_data_urb_pending = %d\n",
1131 atomic_read(&cardp->rx_data_urb_pending));
1132 }
1133
1134 p += sprintf(p, "tx_pending = %d\n",
1135 atomic_read(&adapter->tx_pending));
1136 p += sprintf(p, "rx_pending = %d\n",
1137 atomic_read(&adapter->rx_pending));
1138
1139 if (adapter->iface_type == MWIFIEX_SDIO) {
1140 sdio_card = (struct sdio_mmc_card *)adapter->card;
1141 p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
1142 sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port);
1143 p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
1144 sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port);
1145 }
1146
1147 for (i = 0; i < adapter->priv_num; i++) {
1148 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1149 continue;
1150 priv = adapter->priv[i];
1151 p += sprintf(p, "\n[interface : \"%s\"]\n",
1152 priv->netdev->name);
1153 p += sprintf(p, "wmm_tx_pending[0] = %d\n",
1154 atomic_read(&priv->wmm_tx_pending[0]));
1155 p += sprintf(p, "wmm_tx_pending[1] = %d\n",
1156 atomic_read(&priv->wmm_tx_pending[1]));
1157 p += sprintf(p, "wmm_tx_pending[2] = %d\n",
1158 atomic_read(&priv->wmm_tx_pending[2]));
1159 p += sprintf(p, "wmm_tx_pending[3] = %d\n",
1160 atomic_read(&priv->wmm_tx_pending[3]));
1161 p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ?
1162 "Disconnected" : "Connected");
1163 p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev)
1164 ? "on" : "off"));
1165 for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) {
1166 txq = netdev_get_tx_queue(priv->netdev, idx);
1167 p += sprintf(p, "tx queue %d:%s ", idx,
1168 netif_tx_queue_stopped(txq) ?
1169 "stopped" : "started");
1170 }
1171 p += sprintf(p, "\n%s: num_tx_timeout = %d\n",
1172 priv->netdev->name, priv->num_tx_timeout);
1173 }
1174
1175 if (adapter->iface_type == MWIFIEX_SDIO ||
1176 adapter->iface_type == MWIFIEX_PCIE) {
1177 p += sprintf(p, "\n=== %s register dump===\n",
1178 adapter->iface_type == MWIFIEX_SDIO ?
1179 "SDIO" : "PCIE");
1180 if (adapter->if_ops.reg_dump)
1181 p += adapter->if_ops.reg_dump(adapter, p);
1182 }
1183 p += sprintf(p, "\n=== more debug information\n");
1184 debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);
1185 if (debug_info) {
1186 for (i = 0; i < adapter->priv_num; i++) {
1187 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1188 continue;
1189 priv = adapter->priv[i];
1190 mwifiex_get_debug_info(priv, debug_info);
1191 p += mwifiex_debug_info_to_buffer(priv, p, debug_info);
1192 break;
1193 }
1194 kfree(debug_info);
1195 }
1196
1197 strcpy(p, "\n========End dump========\n");
1198 p += strlen("\n========End dump========\n");
1199 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n");
1200 adapter->devdump_len = p - (char *)adapter->devdump_data;
1201 }
1202 EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump);
1203
mwifiex_prepare_fw_dump_info(struct mwifiex_adapter * adapter)1204 void mwifiex_prepare_fw_dump_info(struct mwifiex_adapter *adapter)
1205 {
1206 u8 idx;
1207 char *fw_dump_ptr;
1208 u32 dump_len = 0;
1209
1210 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1211 struct memory_type_mapping *entry =
1212 &adapter->mem_type_mapping_tbl[idx];
1213
1214 if (entry->mem_ptr) {
1215 dump_len += (strlen("========Start dump ") +
1216 strlen(entry->mem_name) +
1217 strlen("========\n") +
1218 (entry->mem_size + 1) +
1219 strlen("\n========End dump========\n"));
1220 }
1221 }
1222
1223 if (dump_len + 1 + adapter->devdump_len > MWIFIEX_FW_DUMP_SIZE) {
1224 /* Realloc in case buffer overflow */
1225 fw_dump_ptr = vzalloc(dump_len + 1 + adapter->devdump_len);
1226 mwifiex_dbg(adapter, MSG, "Realloc device dump data.\n");
1227 if (!fw_dump_ptr) {
1228 vfree(adapter->devdump_data);
1229 mwifiex_dbg(adapter, ERROR,
1230 "vzalloc devdump data failure!\n");
1231 return;
1232 }
1233
1234 memmove(fw_dump_ptr, adapter->devdump_data,
1235 adapter->devdump_len);
1236 vfree(adapter->devdump_data);
1237 adapter->devdump_data = fw_dump_ptr;
1238 }
1239
1240 fw_dump_ptr = (char *)adapter->devdump_data + adapter->devdump_len;
1241
1242 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1243 struct memory_type_mapping *entry =
1244 &adapter->mem_type_mapping_tbl[idx];
1245
1246 if (entry->mem_ptr) {
1247 strcpy(fw_dump_ptr, "========Start dump ");
1248 fw_dump_ptr += strlen("========Start dump ");
1249
1250 strcpy(fw_dump_ptr, entry->mem_name);
1251 fw_dump_ptr += strlen(entry->mem_name);
1252
1253 strcpy(fw_dump_ptr, "========\n");
1254 fw_dump_ptr += strlen("========\n");
1255
1256 memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1257 fw_dump_ptr += entry->mem_size;
1258
1259 strcpy(fw_dump_ptr, "\n========End dump========\n");
1260 fw_dump_ptr += strlen("\n========End dump========\n");
1261 }
1262 }
1263
1264 adapter->devdump_len = fw_dump_ptr - (char *)adapter->devdump_data;
1265
1266 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1267 struct memory_type_mapping *entry =
1268 &adapter->mem_type_mapping_tbl[idx];
1269
1270 vfree(entry->mem_ptr);
1271 entry->mem_ptr = NULL;
1272 entry->mem_size = 0;
1273 }
1274 }
1275 EXPORT_SYMBOL_GPL(mwifiex_prepare_fw_dump_info);
1276
1277 /*
1278 * CFG802.11 network device handler for statistics retrieval.
1279 */
mwifiex_get_stats(struct net_device * dev)1280 static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
1281 {
1282 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1283
1284 return &priv->stats;
1285 }
1286
1287 static u16
mwifiex_netdev_select_wmm_queue(struct net_device * dev,struct sk_buff * skb,struct net_device * sb_dev)1288 mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb,
1289 struct net_device *sb_dev)
1290 {
1291 skb->priority = cfg80211_classify8021d(skb, NULL);
1292 return mwifiex_1d_to_wmm_queue[skb->priority];
1293 }
1294
1295 /* Network device handlers */
1296 static const struct net_device_ops mwifiex_netdev_ops = {
1297 .ndo_open = mwifiex_open,
1298 .ndo_stop = mwifiex_close,
1299 .ndo_start_xmit = mwifiex_hard_start_xmit,
1300 .ndo_set_mac_address = mwifiex_ndo_set_mac_address,
1301 .ndo_validate_addr = eth_validate_addr,
1302 .ndo_tx_timeout = mwifiex_tx_timeout,
1303 .ndo_get_stats = mwifiex_get_stats,
1304 .ndo_set_rx_mode = mwifiex_set_multicast_list,
1305 .ndo_select_queue = mwifiex_netdev_select_wmm_queue,
1306 };
1307
1308 /*
1309 * This function initializes the private structure parameters.
1310 *
1311 * The following wait queues are initialized -
1312 * - IOCTL wait queue
1313 * - Command wait queue
1314 * - Statistics wait queue
1315 *
1316 * ...and the following default parameters are set -
1317 * - Current key index : Set to 0
1318 * - Rate index : Set to auto
1319 * - Media connected : Set to disconnected
1320 * - Adhoc link sensed : Set to false
1321 * - Nick name : Set to null
1322 * - Number of Tx timeout : Set to 0
1323 * - Device address : Set to current address
1324 * - Rx histogram statistc : Set to 0
1325 *
1326 * In addition, the CFG80211 work queue is also created.
1327 */
mwifiex_init_priv_params(struct mwifiex_private * priv,struct net_device * dev)1328 void mwifiex_init_priv_params(struct mwifiex_private *priv,
1329 struct net_device *dev)
1330 {
1331 dev->netdev_ops = &mwifiex_netdev_ops;
1332 dev->needs_free_netdev = true;
1333 /* Initialize private structure */
1334 priv->current_key_index = 0;
1335 priv->media_connected = false;
1336 memset(priv->mgmt_ie, 0,
1337 sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX);
1338 priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK;
1339 priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK;
1340 priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK;
1341 priv->gen_idx = MWIFIEX_AUTO_IDX_MASK;
1342 priv->num_tx_timeout = 0;
1343 if (is_valid_ether_addr(dev->dev_addr))
1344 ether_addr_copy(priv->curr_addr, dev->dev_addr);
1345 else
1346 ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr);
1347
1348 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
1349 GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
1350 priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL);
1351 if (priv->hist_data)
1352 mwifiex_hist_data_reset(priv);
1353 }
1354 }
1355
1356 /*
1357 * This function check if command is pending.
1358 */
is_command_pending(struct mwifiex_adapter * adapter)1359 int is_command_pending(struct mwifiex_adapter *adapter)
1360 {
1361 int is_cmd_pend_q_empty;
1362
1363 spin_lock_bh(&adapter->cmd_pending_q_lock);
1364 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
1365 spin_unlock_bh(&adapter->cmd_pending_q_lock);
1366
1367 return !is_cmd_pend_q_empty;
1368 }
1369
1370 /*
1371 * This is the RX work queue function.
1372 *
1373 * It handles the RX operations.
1374 */
mwifiex_rx_work_queue(struct work_struct * work)1375 static void mwifiex_rx_work_queue(struct work_struct *work)
1376 {
1377 struct mwifiex_adapter *adapter =
1378 container_of(work, struct mwifiex_adapter, rx_work);
1379
1380 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1381 return;
1382 mwifiex_process_rx(adapter);
1383 }
1384
1385 /*
1386 * This is the main work queue function.
1387 *
1388 * It handles the main process, which in turn handles the complete
1389 * driver operations.
1390 */
mwifiex_main_work_queue(struct work_struct * work)1391 static void mwifiex_main_work_queue(struct work_struct *work)
1392 {
1393 struct mwifiex_adapter *adapter =
1394 container_of(work, struct mwifiex_adapter, main_work);
1395
1396 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1397 return;
1398 mwifiex_main_process(adapter);
1399 }
1400
1401 /* Common teardown code used for both device removal and reset */
mwifiex_uninit_sw(struct mwifiex_adapter * adapter)1402 static void mwifiex_uninit_sw(struct mwifiex_adapter *adapter)
1403 {
1404 struct mwifiex_private *priv;
1405 int i;
1406
1407 /* We can no longer handle interrupts once we start doing the teardown
1408 * below.
1409 */
1410 if (adapter->if_ops.disable_int)
1411 adapter->if_ops.disable_int(adapter);
1412
1413 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1414 mwifiex_terminate_workqueue(adapter);
1415 adapter->int_status = 0;
1416
1417 /* Stop data */
1418 for (i = 0; i < adapter->priv_num; i++) {
1419 priv = adapter->priv[i];
1420 if (priv && priv->netdev) {
1421 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
1422 if (netif_carrier_ok(priv->netdev))
1423 netif_carrier_off(priv->netdev);
1424 netif_device_detach(priv->netdev);
1425 }
1426 }
1427
1428 mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n");
1429 mwifiex_shutdown_drv(adapter);
1430 mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n");
1431
1432 if (atomic_read(&adapter->rx_pending) ||
1433 atomic_read(&adapter->tx_pending) ||
1434 atomic_read(&adapter->cmd_pending)) {
1435 mwifiex_dbg(adapter, ERROR,
1436 "rx_pending=%d, tx_pending=%d,\t"
1437 "cmd_pending=%d\n",
1438 atomic_read(&adapter->rx_pending),
1439 atomic_read(&adapter->tx_pending),
1440 atomic_read(&adapter->cmd_pending));
1441 }
1442
1443 for (i = 0; i < adapter->priv_num; i++) {
1444 priv = adapter->priv[i];
1445 if (!priv)
1446 continue;
1447 rtnl_lock();
1448 wiphy_lock(adapter->wiphy);
1449 if (priv->netdev &&
1450 priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED)
1451 mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
1452 wiphy_unlock(adapter->wiphy);
1453 rtnl_unlock();
1454 }
1455
1456 wiphy_unregister(adapter->wiphy);
1457 wiphy_free(adapter->wiphy);
1458 adapter->wiphy = NULL;
1459
1460 vfree(adapter->chan_stats);
1461 mwifiex_free_cmd_buffers(adapter);
1462 }
1463
1464 /*
1465 * This function can be used for shutting down the adapter SW.
1466 */
mwifiex_shutdown_sw(struct mwifiex_adapter * adapter)1467 int mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
1468 {
1469 struct mwifiex_private *priv;
1470
1471 if (!adapter)
1472 return 0;
1473
1474 wait_for_completion(adapter->fw_done);
1475 /* Caller should ensure we aren't suspending while this happens */
1476 reinit_completion(adapter->fw_done);
1477
1478 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1479 mwifiex_deauthenticate(priv, NULL);
1480
1481 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
1482
1483 mwifiex_uninit_sw(adapter);
1484 adapter->is_up = false;
1485
1486 if (adapter->if_ops.down_dev)
1487 adapter->if_ops.down_dev(adapter);
1488
1489 return 0;
1490 }
1491 EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw);
1492
1493 /* This function can be used for reinitting the adapter SW. Required
1494 * code is extracted from mwifiex_add_card()
1495 */
1496 int
mwifiex_reinit_sw(struct mwifiex_adapter * adapter)1497 mwifiex_reinit_sw(struct mwifiex_adapter *adapter)
1498 {
1499 int ret;
1500
1501 mwifiex_init_lock_list(adapter);
1502 if (adapter->if_ops.up_dev)
1503 adapter->if_ops.up_dev(adapter);
1504
1505 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1506 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1507 init_waitqueue_head(&adapter->init_wait_q);
1508 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
1509 adapter->hs_activated = false;
1510 clear_bit(MWIFIEX_IS_CMD_TIMEDOUT, &adapter->work_flags);
1511 init_waitqueue_head(&adapter->hs_activate_wait_q);
1512 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1513 adapter->cmd_wait_q.status = 0;
1514 adapter->scan_wait_q_woken = false;
1515
1516 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1517 adapter->rx_work_enabled = true;
1518
1519 adapter->workqueue =
1520 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1521 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1522 if (!adapter->workqueue)
1523 goto err_kmalloc;
1524
1525 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1526
1527 if (adapter->rx_work_enabled) {
1528 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1529 WQ_HIGHPRI |
1530 WQ_MEM_RECLAIM |
1531 WQ_UNBOUND, 1);
1532 if (!adapter->rx_workqueue)
1533 goto err_kmalloc;
1534 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1535 }
1536
1537 /* Register the device. Fill up the private data structure with
1538 * relevant information from the card. Some code extracted from
1539 * mwifiex_register_dev()
1540 */
1541 mwifiex_dbg(adapter, INFO, "%s, mwifiex_init_hw_fw()...\n", __func__);
1542
1543 if (mwifiex_init_hw_fw(adapter, false)) {
1544 mwifiex_dbg(adapter, ERROR,
1545 "%s: firmware init failed\n", __func__);
1546 goto err_init_fw;
1547 }
1548
1549 /* _mwifiex_fw_dpc() does its own cleanup */
1550 ret = _mwifiex_fw_dpc(adapter->firmware, adapter);
1551 if (ret) {
1552 pr_err("Failed to bring up adapter: %d\n", ret);
1553 return ret;
1554 }
1555 mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
1556
1557 return 0;
1558
1559 err_init_fw:
1560 mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__);
1561 if (adapter->if_ops.unregister_dev)
1562 adapter->if_ops.unregister_dev(adapter);
1563
1564 err_kmalloc:
1565 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1566 mwifiex_terminate_workqueue(adapter);
1567 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1568 mwifiex_dbg(adapter, ERROR,
1569 "info: %s: shutdown mwifiex\n", __func__);
1570 mwifiex_shutdown_drv(adapter);
1571 mwifiex_free_cmd_buffers(adapter);
1572 }
1573
1574 complete_all(adapter->fw_done);
1575 mwifiex_dbg(adapter, INFO, "%s, error\n", __func__);
1576
1577 return -1;
1578 }
1579 EXPORT_SYMBOL_GPL(mwifiex_reinit_sw);
1580
mwifiex_irq_wakeup_handler(int irq,void * priv)1581 static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv)
1582 {
1583 struct mwifiex_adapter *adapter = priv;
1584
1585 dev_dbg(adapter->dev, "%s: wake by wifi", __func__);
1586 adapter->wake_by_wifi = true;
1587 disable_irq_nosync(irq);
1588
1589 /* Notify PM core we are wakeup source */
1590 pm_wakeup_event(adapter->dev, 0);
1591 pm_system_wakeup();
1592
1593 return IRQ_HANDLED;
1594 }
1595
mwifiex_probe_of(struct mwifiex_adapter * adapter)1596 static void mwifiex_probe_of(struct mwifiex_adapter *adapter)
1597 {
1598 int ret;
1599 struct device *dev = adapter->dev;
1600
1601 if (!dev->of_node)
1602 goto err_exit;
1603
1604 adapter->dt_node = dev->of_node;
1605 adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0);
1606 if (!adapter->irq_wakeup) {
1607 dev_dbg(dev, "fail to parse irq_wakeup from device tree\n");
1608 goto err_exit;
1609 }
1610
1611 ret = devm_request_irq(dev, adapter->irq_wakeup,
1612 mwifiex_irq_wakeup_handler, IRQF_TRIGGER_LOW,
1613 "wifi_wake", adapter);
1614 if (ret) {
1615 dev_err(dev, "Failed to request irq_wakeup %d (%d)\n",
1616 adapter->irq_wakeup, ret);
1617 goto err_exit;
1618 }
1619
1620 disable_irq(adapter->irq_wakeup);
1621 if (device_init_wakeup(dev, true)) {
1622 dev_err(dev, "fail to init wakeup for mwifiex\n");
1623 goto err_exit;
1624 }
1625 return;
1626
1627 err_exit:
1628 adapter->irq_wakeup = -1;
1629 }
1630
1631 /*
1632 * This function adds the card.
1633 *
1634 * This function follows the following major steps to set up the device -
1635 * - Initialize software. This includes probing the card, registering
1636 * the interface operations table, and allocating/initializing the
1637 * adapter structure
1638 * - Set up the netlink socket
1639 * - Create and start the main work queue
1640 * - Register the device
1641 * - Initialize firmware and hardware
1642 * - Add logical interfaces
1643 */
1644 int
mwifiex_add_card(void * card,struct completion * fw_done,struct mwifiex_if_ops * if_ops,u8 iface_type,struct device * dev)1645 mwifiex_add_card(void *card, struct completion *fw_done,
1646 struct mwifiex_if_ops *if_ops, u8 iface_type,
1647 struct device *dev)
1648 {
1649 struct mwifiex_adapter *adapter;
1650
1651 if (mwifiex_register(card, dev, if_ops, (void **)&adapter)) {
1652 pr_err("%s: software init failed\n", __func__);
1653 goto err_init_sw;
1654 }
1655
1656 mwifiex_probe_of(adapter);
1657
1658 adapter->iface_type = iface_type;
1659 adapter->fw_done = fw_done;
1660
1661 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1662 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1663 init_waitqueue_head(&adapter->init_wait_q);
1664 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
1665 adapter->hs_activated = false;
1666 init_waitqueue_head(&adapter->hs_activate_wait_q);
1667 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1668 adapter->cmd_wait_q.status = 0;
1669 adapter->scan_wait_q_woken = false;
1670
1671 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1672 adapter->rx_work_enabled = true;
1673
1674 adapter->workqueue =
1675 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1676 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1677 if (!adapter->workqueue)
1678 goto err_kmalloc;
1679
1680 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1681
1682 if (adapter->rx_work_enabled) {
1683 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1684 WQ_HIGHPRI |
1685 WQ_MEM_RECLAIM |
1686 WQ_UNBOUND, 1);
1687 if (!adapter->rx_workqueue)
1688 goto err_kmalloc;
1689
1690 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1691 }
1692
1693 /* Register the device. Fill up the private data structure with relevant
1694 information from the card. */
1695 if (adapter->if_ops.register_dev(adapter)) {
1696 pr_err("%s: failed to register mwifiex device\n", __func__);
1697 goto err_registerdev;
1698 }
1699
1700 if (mwifiex_init_hw_fw(adapter, true)) {
1701 pr_err("%s: firmware init failed\n", __func__);
1702 goto err_init_fw;
1703 }
1704
1705 return 0;
1706
1707 err_init_fw:
1708 pr_debug("info: %s: unregister device\n", __func__);
1709 if (adapter->if_ops.unregister_dev)
1710 adapter->if_ops.unregister_dev(adapter);
1711 err_registerdev:
1712 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1713 mwifiex_terminate_workqueue(adapter);
1714 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1715 pr_debug("info: %s: shutdown mwifiex\n", __func__);
1716 mwifiex_shutdown_drv(adapter);
1717 mwifiex_free_cmd_buffers(adapter);
1718 }
1719 err_kmalloc:
1720 if (adapter->irq_wakeup >= 0)
1721 device_init_wakeup(adapter->dev, false);
1722 mwifiex_free_adapter(adapter);
1723
1724 err_init_sw:
1725
1726 return -1;
1727 }
1728 EXPORT_SYMBOL_GPL(mwifiex_add_card);
1729
1730 /*
1731 * This function removes the card.
1732 *
1733 * This function follows the following major steps to remove the device -
1734 * - Stop data traffic
1735 * - Shutdown firmware
1736 * - Remove the logical interfaces
1737 * - Terminate the work queue
1738 * - Unregister the device
1739 * - Free the adapter structure
1740 */
mwifiex_remove_card(struct mwifiex_adapter * adapter)1741 int mwifiex_remove_card(struct mwifiex_adapter *adapter)
1742 {
1743 if (!adapter)
1744 return 0;
1745
1746 if (adapter->is_up)
1747 mwifiex_uninit_sw(adapter);
1748
1749 if (adapter->irq_wakeup >= 0)
1750 device_init_wakeup(adapter->dev, false);
1751
1752 /* Unregister device */
1753 mwifiex_dbg(adapter, INFO,
1754 "info: unregister device\n");
1755 if (adapter->if_ops.unregister_dev)
1756 adapter->if_ops.unregister_dev(adapter);
1757 /* Free adapter structure */
1758 mwifiex_dbg(adapter, INFO,
1759 "info: free adapter\n");
1760 mwifiex_free_adapter(adapter);
1761
1762 return 0;
1763 }
1764 EXPORT_SYMBOL_GPL(mwifiex_remove_card);
1765
_mwifiex_dbg(const struct mwifiex_adapter * adapter,int mask,const char * fmt,...)1766 void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
1767 const char *fmt, ...)
1768 {
1769 struct va_format vaf;
1770 va_list args;
1771
1772 if (!(adapter->debug_mask & mask))
1773 return;
1774
1775 va_start(args, fmt);
1776
1777 vaf.fmt = fmt;
1778 vaf.va = &args;
1779
1780 if (adapter->dev)
1781 dev_info(adapter->dev, "%pV", &vaf);
1782 else
1783 pr_info("%pV", &vaf);
1784
1785 va_end(args);
1786 }
1787 EXPORT_SYMBOL_GPL(_mwifiex_dbg);
1788
1789 /*
1790 * This function initializes the module.
1791 *
1792 * The debug FS is also initialized if configured.
1793 */
1794 static int
mwifiex_init_module(void)1795 mwifiex_init_module(void)
1796 {
1797 #ifdef CONFIG_DEBUG_FS
1798 mwifiex_debugfs_init();
1799 #endif
1800 return 0;
1801 }
1802
1803 /*
1804 * This function cleans up the module.
1805 *
1806 * The debug FS is removed if available.
1807 */
1808 static void
mwifiex_cleanup_module(void)1809 mwifiex_cleanup_module(void)
1810 {
1811 #ifdef CONFIG_DEBUG_FS
1812 mwifiex_debugfs_remove();
1813 #endif
1814 }
1815
1816 module_init(mwifiex_init_module);
1817 module_exit(mwifiex_cleanup_module);
1818
1819 MODULE_AUTHOR("Marvell International Ltd.");
1820 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION);
1821 MODULE_VERSION(VERSION);
1822 MODULE_LICENSE("GPL v2");
1823