1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * NXP Wireless LAN device driver: major functions
4 *
5 * Copyright 2011-2020 NXP
6 */
7
8 #include <linux/suspend.h>
9
10 #include "main.h"
11 #include "wmm.h"
12 #include "cfg80211.h"
13 #include "11n.h"
14
15 #define VERSION "1.0"
16 #define MFG_FIRMWARE "mwifiex_mfg.bin"
17
18 static unsigned int debug_mask = MWIFIEX_DEFAULT_DEBUG_MASK;
19 module_param(debug_mask, uint, 0);
20 MODULE_PARM_DESC(debug_mask, "bitmap for debug flags");
21
22 const char driver_version[] = "mwifiex " VERSION " (%s) ";
23 static char *cal_data_cfg;
24 module_param(cal_data_cfg, charp, 0);
25
26 static unsigned short driver_mode;
27 module_param(driver_mode, ushort, 0);
28 MODULE_PARM_DESC(driver_mode,
29 "station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7");
30
31 bool mfg_mode;
32 module_param(mfg_mode, bool, 0);
33 MODULE_PARM_DESC(mfg_mode, "manufacturing mode enable:1, disable:0");
34
35 bool aggr_ctrl;
36 module_param(aggr_ctrl, bool, 0000);
37 MODULE_PARM_DESC(aggr_ctrl, "usb tx aggregation enable:1, disable:0");
38
39 const u16 mwifiex_1d_to_wmm_queue[8] = { 1, 0, 0, 1, 2, 2, 3, 3 };
40
41 /*
42 * This function registers the device and performs all the necessary
43 * initializations.
44 *
45 * The following initialization operations are performed -
46 * - Allocate adapter structure
47 * - Save interface specific operations table in adapter
48 * - Call interface specific initialization routine
49 * - Allocate private structures
50 * - Set default adapter structure parameters
51 * - Initialize locks
52 *
53 * In case of any errors during inittialization, this function also ensures
54 * proper cleanup before exiting.
55 */
mwifiex_register(void * card,struct device * dev,struct mwifiex_if_ops * if_ops,void ** padapter)56 static int mwifiex_register(void *card, struct device *dev,
57 struct mwifiex_if_ops *if_ops, void **padapter)
58 {
59 struct mwifiex_adapter *adapter;
60 int i;
61
62 adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL);
63 if (!adapter)
64 return -ENOMEM;
65
66 *padapter = adapter;
67 adapter->dev = dev;
68 adapter->card = card;
69
70 /* Save interface specific operations in adapter */
71 memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));
72 adapter->debug_mask = debug_mask;
73
74 /* card specific initialization has been deferred until now .. */
75 if (adapter->if_ops.init_if)
76 if (adapter->if_ops.init_if(adapter))
77 goto error;
78
79 adapter->priv_num = 0;
80
81 for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) {
82 /* Allocate memory for private structure */
83 adapter->priv[i] =
84 kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL);
85 if (!adapter->priv[i])
86 goto error;
87
88 adapter->priv[i]->adapter = adapter;
89 adapter->priv_num++;
90 }
91 mwifiex_init_lock_list(adapter);
92
93 timer_setup(&adapter->cmd_timer, mwifiex_cmd_timeout_func, 0);
94
95 return 0;
96
97 error:
98 mwifiex_dbg(adapter, ERROR,
99 "info: leave mwifiex_register with error\n");
100
101 for (i = 0; i < adapter->priv_num; i++)
102 kfree(adapter->priv[i]);
103
104 kfree(adapter);
105
106 return -1;
107 }
108
109 /*
110 * This function unregisters the device and performs all the necessary
111 * cleanups.
112 *
113 * The following cleanup operations are performed -
114 * - Free the timers
115 * - Free beacon buffers
116 * - Free private structures
117 * - Free adapter structure
118 */
mwifiex_unregister(struct mwifiex_adapter * adapter)119 static int mwifiex_unregister(struct mwifiex_adapter *adapter)
120 {
121 s32 i;
122
123 if (adapter->if_ops.cleanup_if)
124 adapter->if_ops.cleanup_if(adapter);
125
126 timer_shutdown_sync(&adapter->cmd_timer);
127
128 /* Free private structures */
129 for (i = 0; i < adapter->priv_num; i++) {
130 if (adapter->priv[i]) {
131 mwifiex_free_curr_bcn(adapter->priv[i]);
132 kfree(adapter->priv[i]);
133 }
134 }
135
136 if (adapter->nd_info) {
137 for (i = 0 ; i < adapter->nd_info->n_matches ; i++)
138 kfree(adapter->nd_info->matches[i]);
139 kfree(adapter->nd_info);
140 adapter->nd_info = NULL;
141 }
142
143 kfree(adapter->regd);
144
145 kfree(adapter);
146 return 0;
147 }
148
mwifiex_queue_main_work(struct mwifiex_adapter * adapter)149 void mwifiex_queue_main_work(struct mwifiex_adapter *adapter)
150 {
151 unsigned long flags;
152
153 spin_lock_irqsave(&adapter->main_proc_lock, flags);
154 if (adapter->mwifiex_processing) {
155 adapter->more_task_flag = true;
156 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
157 } else {
158 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
159 queue_work(adapter->workqueue, &adapter->main_work);
160 }
161 }
162 EXPORT_SYMBOL_GPL(mwifiex_queue_main_work);
163
mwifiex_queue_rx_work(struct mwifiex_adapter * adapter)164 static void mwifiex_queue_rx_work(struct mwifiex_adapter *adapter)
165 {
166 spin_lock_bh(&adapter->rx_proc_lock);
167 if (adapter->rx_processing) {
168 spin_unlock_bh(&adapter->rx_proc_lock);
169 } else {
170 spin_unlock_bh(&adapter->rx_proc_lock);
171 queue_work(adapter->rx_workqueue, &adapter->rx_work);
172 }
173 }
174
mwifiex_process_rx(struct mwifiex_adapter * adapter)175 static int mwifiex_process_rx(struct mwifiex_adapter *adapter)
176 {
177 struct sk_buff *skb;
178 struct mwifiex_rxinfo *rx_info;
179
180 spin_lock_bh(&adapter->rx_proc_lock);
181 if (adapter->rx_processing || adapter->rx_locked) {
182 spin_unlock_bh(&adapter->rx_proc_lock);
183 goto exit_rx_proc;
184 } else {
185 adapter->rx_processing = true;
186 spin_unlock_bh(&adapter->rx_proc_lock);
187 }
188
189 /* Check for Rx data */
190 while ((skb = skb_dequeue(&adapter->rx_data_q))) {
191 atomic_dec(&adapter->rx_pending);
192 if ((adapter->delay_main_work ||
193 adapter->iface_type == MWIFIEX_USB) &&
194 (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {
195 if (adapter->if_ops.submit_rem_rx_urbs)
196 adapter->if_ops.submit_rem_rx_urbs(adapter);
197 adapter->delay_main_work = false;
198 mwifiex_queue_main_work(adapter);
199 }
200 rx_info = MWIFIEX_SKB_RXCB(skb);
201 if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) {
202 if (adapter->if_ops.deaggr_pkt)
203 adapter->if_ops.deaggr_pkt(adapter, skb);
204 dev_kfree_skb_any(skb);
205 } else {
206 mwifiex_handle_rx_packet(adapter, skb);
207 }
208 }
209 spin_lock_bh(&adapter->rx_proc_lock);
210 adapter->rx_processing = false;
211 spin_unlock_bh(&adapter->rx_proc_lock);
212
213 exit_rx_proc:
214 return 0;
215 }
216
maybe_quirk_fw_disable_ds(struct mwifiex_adapter * adapter)217 static void maybe_quirk_fw_disable_ds(struct mwifiex_adapter *adapter)
218 {
219 struct mwifiex_private *priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA);
220 struct mwifiex_ver_ext ver_ext;
221
222 if (test_and_set_bit(MWIFIEX_IS_REQUESTING_FW_VEREXT, &adapter->work_flags))
223 return;
224
225 memset(&ver_ext, 0, sizeof(ver_ext));
226 ver_ext.version_str_sel = 1;
227 if (mwifiex_send_cmd(priv, HostCmd_CMD_VERSION_EXT,
228 HostCmd_ACT_GEN_GET, 0, &ver_ext, false)) {
229 mwifiex_dbg(priv->adapter, MSG,
230 "Checking hardware revision failed.\n");
231 }
232 }
233
234 /*
235 * The main process.
236 *
237 * This function is the main procedure of the driver and handles various driver
238 * operations. It runs in a loop and provides the core functionalities.
239 *
240 * The main responsibilities of this function are -
241 * - Ensure concurrency control
242 * - Handle pending interrupts and call interrupt handlers
243 * - Wake up the card if required
244 * - Handle command responses and call response handlers
245 * - Handle events and call event handlers
246 * - Execute pending commands
247 * - Transmit pending data packets
248 */
mwifiex_main_process(struct mwifiex_adapter * adapter)249 int mwifiex_main_process(struct mwifiex_adapter *adapter)
250 {
251 int ret = 0;
252 unsigned long flags;
253
254 spin_lock_irqsave(&adapter->main_proc_lock, flags);
255
256 /* Check if already processing */
257 if (adapter->mwifiex_processing || adapter->main_locked) {
258 adapter->more_task_flag = true;
259 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
260 return 0;
261 } else {
262 adapter->mwifiex_processing = true;
263 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
264 }
265 process_start:
266 do {
267 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
268 break;
269
270 /* For non-USB interfaces, If we process interrupts first, it
271 * would increase RX pending even further. Avoid this by
272 * checking if rx_pending has crossed high threshold and
273 * schedule rx work queue and then process interrupts.
274 * For USB interface, there are no interrupts. We already have
275 * HIGH_RX_PENDING check in usb.c
276 */
277 if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING &&
278 adapter->iface_type != MWIFIEX_USB) {
279 adapter->delay_main_work = true;
280 mwifiex_queue_rx_work(adapter);
281 break;
282 }
283
284 /* Handle pending interrupt if any */
285 if (adapter->int_status) {
286 if (adapter->hs_activated)
287 mwifiex_process_hs_config(adapter);
288 if (adapter->if_ops.process_int_status)
289 adapter->if_ops.process_int_status(adapter);
290 }
291
292 if (adapter->rx_work_enabled && adapter->data_received)
293 mwifiex_queue_rx_work(adapter);
294
295 /* Need to wake up the card ? */
296 if ((adapter->ps_state == PS_STATE_SLEEP) &&
297 (adapter->pm_wakeup_card_req &&
298 !adapter->pm_wakeup_fw_try) &&
299 (is_command_pending(adapter) ||
300 !skb_queue_empty(&adapter->tx_data_q) ||
301 !mwifiex_bypass_txlist_empty(adapter) ||
302 !mwifiex_wmm_lists_empty(adapter))) {
303 adapter->pm_wakeup_fw_try = true;
304 mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3));
305 adapter->if_ops.wakeup(adapter);
306 continue;
307 }
308
309 if (IS_CARD_RX_RCVD(adapter)) {
310 adapter->data_received = false;
311 adapter->pm_wakeup_fw_try = false;
312 del_timer(&adapter->wakeup_timer);
313 if (adapter->ps_state == PS_STATE_SLEEP)
314 adapter->ps_state = PS_STATE_AWAKE;
315 } else {
316 /* We have tried to wakeup the card already */
317 if (adapter->pm_wakeup_fw_try)
318 break;
319 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
320 mwifiex_check_ps_cond(adapter);
321
322 if (adapter->ps_state != PS_STATE_AWAKE)
323 break;
324 if (adapter->tx_lock_flag) {
325 if (adapter->iface_type == MWIFIEX_USB) {
326 if (!adapter->usb_mc_setup)
327 break;
328 } else
329 break;
330 }
331
332 if ((!adapter->scan_chan_gap_enabled &&
333 adapter->scan_processing) || adapter->data_sent ||
334 mwifiex_is_tdls_chan_switching
335 (mwifiex_get_priv(adapter,
336 MWIFIEX_BSS_ROLE_STA)) ||
337 (mwifiex_wmm_lists_empty(adapter) &&
338 mwifiex_bypass_txlist_empty(adapter) &&
339 skb_queue_empty(&adapter->tx_data_q))) {
340 if (adapter->cmd_sent || adapter->curr_cmd ||
341 !mwifiex_is_send_cmd_allowed
342 (mwifiex_get_priv(adapter,
343 MWIFIEX_BSS_ROLE_STA)) ||
344 (!is_command_pending(adapter)))
345 break;
346 }
347 }
348
349 /* Check for event */
350 if (adapter->event_received) {
351 adapter->event_received = false;
352 mwifiex_process_event(adapter);
353 }
354
355 /* Check for Cmd Resp */
356 if (adapter->cmd_resp_received) {
357 adapter->cmd_resp_received = false;
358 mwifiex_process_cmdresp(adapter);
359
360 /* call mwifiex back when init_fw is done */
361 if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) {
362 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
363 mwifiex_init_fw_complete(adapter);
364 maybe_quirk_fw_disable_ds(adapter);
365 }
366 }
367
368 /* Check if we need to confirm Sleep Request
369 received previously */
370 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
371 mwifiex_check_ps_cond(adapter);
372
373 /* * The ps_state may have been changed during processing of
374 * Sleep Request event.
375 */
376 if ((adapter->ps_state == PS_STATE_SLEEP) ||
377 (adapter->ps_state == PS_STATE_PRE_SLEEP) ||
378 (adapter->ps_state == PS_STATE_SLEEP_CFM)) {
379 continue;
380 }
381
382 if (adapter->tx_lock_flag) {
383 if (adapter->iface_type == MWIFIEX_USB) {
384 if (!adapter->usb_mc_setup)
385 continue;
386 } else
387 continue;
388 }
389
390 if (!adapter->cmd_sent && !adapter->curr_cmd &&
391 mwifiex_is_send_cmd_allowed
392 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
393 if (mwifiex_exec_next_cmd(adapter) == -1) {
394 ret = -1;
395 break;
396 }
397 }
398
399 /** If USB Multi channel setup ongoing,
400 * wait for ready to tx data.
401 */
402 if (adapter->iface_type == MWIFIEX_USB &&
403 adapter->usb_mc_setup)
404 continue;
405
406 if ((adapter->scan_chan_gap_enabled ||
407 !adapter->scan_processing) &&
408 !adapter->data_sent &&
409 !skb_queue_empty(&adapter->tx_data_q)) {
410 if (adapter->hs_activated_manually) {
411 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY),
412 MWIFIEX_ASYNC_CMD);
413 adapter->hs_activated_manually = false;
414 }
415
416 mwifiex_process_tx_queue(adapter);
417 if (adapter->hs_activated) {
418 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
419 &adapter->work_flags);
420 mwifiex_hs_activated_event
421 (mwifiex_get_priv
422 (adapter, MWIFIEX_BSS_ROLE_ANY),
423 false);
424 }
425 }
426
427 if ((adapter->scan_chan_gap_enabled ||
428 !adapter->scan_processing) &&
429 !adapter->data_sent &&
430 !mwifiex_bypass_txlist_empty(adapter) &&
431 !mwifiex_is_tdls_chan_switching
432 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
433 if (adapter->hs_activated_manually) {
434 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY),
435 MWIFIEX_ASYNC_CMD);
436 adapter->hs_activated_manually = false;
437 }
438
439 mwifiex_process_bypass_tx(adapter);
440 if (adapter->hs_activated) {
441 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
442 &adapter->work_flags);
443 mwifiex_hs_activated_event
444 (mwifiex_get_priv
445 (adapter, MWIFIEX_BSS_ROLE_ANY),
446 false);
447 }
448 }
449
450 if ((adapter->scan_chan_gap_enabled ||
451 !adapter->scan_processing) &&
452 !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) &&
453 !mwifiex_is_tdls_chan_switching
454 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
455 if (adapter->hs_activated_manually) {
456 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY),
457 MWIFIEX_ASYNC_CMD);
458 adapter->hs_activated_manually = false;
459 }
460
461 mwifiex_wmm_process_tx(adapter);
462 if (adapter->hs_activated) {
463 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
464 &adapter->work_flags);
465 mwifiex_hs_activated_event
466 (mwifiex_get_priv
467 (adapter, MWIFIEX_BSS_ROLE_ANY),
468 false);
469 }
470 }
471
472 if (adapter->delay_null_pkt && !adapter->cmd_sent &&
473 !adapter->curr_cmd && !is_command_pending(adapter) &&
474 (mwifiex_wmm_lists_empty(adapter) &&
475 mwifiex_bypass_txlist_empty(adapter) &&
476 skb_queue_empty(&adapter->tx_data_q))) {
477 if (!mwifiex_send_null_packet
478 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
479 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
480 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) {
481 adapter->delay_null_pkt = false;
482 adapter->ps_state = PS_STATE_SLEEP;
483 }
484 break;
485 }
486 } while (true);
487
488 spin_lock_irqsave(&adapter->main_proc_lock, flags);
489 if (adapter->more_task_flag) {
490 adapter->more_task_flag = false;
491 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
492 goto process_start;
493 }
494 adapter->mwifiex_processing = false;
495 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
496
497 return ret;
498 }
499 EXPORT_SYMBOL_GPL(mwifiex_main_process);
500
501 /*
502 * This function frees the adapter structure.
503 *
504 * Additionally, this closes the netlink socket, frees the timers
505 * and private structures.
506 */
mwifiex_free_adapter(struct mwifiex_adapter * adapter)507 static void mwifiex_free_adapter(struct mwifiex_adapter *adapter)
508 {
509 if (!adapter) {
510 pr_err("%s: adapter is NULL\n", __func__);
511 return;
512 }
513
514 mwifiex_unregister(adapter);
515 pr_debug("info: %s: free adapter\n", __func__);
516 }
517
518 /*
519 * This function cancels all works in the queue and destroys
520 * the main workqueue.
521 */
mwifiex_terminate_workqueue(struct mwifiex_adapter * adapter)522 static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter)
523 {
524 if (adapter->workqueue) {
525 destroy_workqueue(adapter->workqueue);
526 adapter->workqueue = NULL;
527 }
528
529 if (adapter->rx_workqueue) {
530 destroy_workqueue(adapter->rx_workqueue);
531 adapter->rx_workqueue = NULL;
532 }
533 }
534
535 /*
536 * This function gets firmware and initializes it.
537 *
538 * The main initialization steps followed are -
539 * - Download the correct firmware to card
540 * - Issue the init commands to firmware
541 */
_mwifiex_fw_dpc(const struct firmware * firmware,void * context)542 static int _mwifiex_fw_dpc(const struct firmware *firmware, void *context)
543 {
544 int ret;
545 char fmt[64];
546 struct mwifiex_adapter *adapter = context;
547 struct mwifiex_fw_image fw;
548 bool init_failed = false;
549 struct wireless_dev *wdev;
550 struct completion *fw_done = adapter->fw_done;
551
552 if (!firmware) {
553 mwifiex_dbg(adapter, ERROR,
554 "Failed to get firmware %s\n", adapter->fw_name);
555 goto err_dnld_fw;
556 }
557
558 memset(&fw, 0, sizeof(struct mwifiex_fw_image));
559 adapter->firmware = firmware;
560 fw.fw_buf = (u8 *) adapter->firmware->data;
561 fw.fw_len = adapter->firmware->size;
562
563 if (adapter->if_ops.dnld_fw) {
564 ret = adapter->if_ops.dnld_fw(adapter, &fw);
565 } else {
566 ret = mwifiex_dnld_fw(adapter, &fw);
567 }
568
569 if (ret == -1)
570 goto err_dnld_fw;
571
572 mwifiex_dbg(adapter, MSG, "WLAN FW is active\n");
573
574 if (cal_data_cfg) {
575 if ((request_firmware(&adapter->cal_data, cal_data_cfg,
576 adapter->dev)) < 0)
577 mwifiex_dbg(adapter, ERROR,
578 "Cal data request_firmware() failed\n");
579 }
580
581 /* enable host interrupt after fw dnld is successful */
582 if (adapter->if_ops.enable_int) {
583 if (adapter->if_ops.enable_int(adapter))
584 goto err_dnld_fw;
585 }
586
587 adapter->init_wait_q_woken = false;
588 ret = mwifiex_init_fw(adapter);
589 if (ret == -1) {
590 goto err_init_fw;
591 } else if (!ret) {
592 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
593 goto done;
594 }
595 /* Wait for mwifiex_init to complete */
596 if (!adapter->mfg_mode) {
597 wait_event_interruptible(adapter->init_wait_q,
598 adapter->init_wait_q_woken);
599 if (adapter->hw_status != MWIFIEX_HW_STATUS_READY)
600 goto err_init_fw;
601 }
602
603 if (!adapter->wiphy) {
604 if (mwifiex_register_cfg80211(adapter)) {
605 mwifiex_dbg(adapter, ERROR,
606 "cannot register with cfg80211\n");
607 goto err_init_fw;
608 }
609 }
610
611 if (mwifiex_init_channel_scan_gap(adapter)) {
612 mwifiex_dbg(adapter, ERROR,
613 "could not init channel stats table\n");
614 goto err_init_chan_scan;
615 }
616
617 if (driver_mode) {
618 driver_mode &= MWIFIEX_DRIVER_MODE_BITMASK;
619 driver_mode |= MWIFIEX_DRIVER_MODE_STA;
620 }
621
622 rtnl_lock();
623 wiphy_lock(adapter->wiphy);
624 /* Create station interface by default */
625 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM,
626 NL80211_IFTYPE_STATION, NULL);
627 if (IS_ERR(wdev)) {
628 mwifiex_dbg(adapter, ERROR,
629 "cannot create default STA interface\n");
630 wiphy_unlock(adapter->wiphy);
631 rtnl_unlock();
632 goto err_add_intf;
633 }
634
635 if (driver_mode & MWIFIEX_DRIVER_MODE_UAP) {
636 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM,
637 NL80211_IFTYPE_AP, NULL);
638 if (IS_ERR(wdev)) {
639 mwifiex_dbg(adapter, ERROR,
640 "cannot create AP interface\n");
641 wiphy_unlock(adapter->wiphy);
642 rtnl_unlock();
643 goto err_add_intf;
644 }
645 }
646
647 if (driver_mode & MWIFIEX_DRIVER_MODE_P2P) {
648 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", NET_NAME_ENUM,
649 NL80211_IFTYPE_P2P_CLIENT, NULL);
650 if (IS_ERR(wdev)) {
651 mwifiex_dbg(adapter, ERROR,
652 "cannot create p2p client interface\n");
653 wiphy_unlock(adapter->wiphy);
654 rtnl_unlock();
655 goto err_add_intf;
656 }
657 }
658 wiphy_unlock(adapter->wiphy);
659 rtnl_unlock();
660
661 mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);
662 mwifiex_dbg(adapter, MSG, "driver_version = %s\n", fmt);
663 adapter->is_up = true;
664 goto done;
665
666 err_add_intf:
667 vfree(adapter->chan_stats);
668 err_init_chan_scan:
669 wiphy_unregister(adapter->wiphy);
670 wiphy_free(adapter->wiphy);
671 err_init_fw:
672 if (adapter->if_ops.disable_int)
673 adapter->if_ops.disable_int(adapter);
674 err_dnld_fw:
675 mwifiex_dbg(adapter, ERROR,
676 "info: %s: unregister device\n", __func__);
677 if (adapter->if_ops.unregister_dev)
678 adapter->if_ops.unregister_dev(adapter);
679
680 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
681 mwifiex_terminate_workqueue(adapter);
682
683 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
684 pr_debug("info: %s: shutdown mwifiex\n", __func__);
685 mwifiex_shutdown_drv(adapter);
686 mwifiex_free_cmd_buffers(adapter);
687 }
688
689 init_failed = true;
690 done:
691 if (adapter->cal_data) {
692 release_firmware(adapter->cal_data);
693 adapter->cal_data = NULL;
694 }
695 if (adapter->firmware) {
696 release_firmware(adapter->firmware);
697 adapter->firmware = NULL;
698 }
699 if (init_failed) {
700 if (adapter->irq_wakeup >= 0)
701 device_init_wakeup(adapter->dev, false);
702 mwifiex_free_adapter(adapter);
703 }
704 /* Tell all current and future waiters we're finished */
705 complete_all(fw_done);
706
707 return init_failed ? -EIO : 0;
708 }
709
mwifiex_fw_dpc(const struct firmware * firmware,void * context)710 static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
711 {
712 _mwifiex_fw_dpc(firmware, context);
713 }
714
715 /*
716 * This function gets the firmware and (if called asynchronously) kicks off the
717 * HW init when done.
718 */
mwifiex_init_hw_fw(struct mwifiex_adapter * adapter,bool req_fw_nowait)719 static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter,
720 bool req_fw_nowait)
721 {
722 int ret;
723
724 /* Override default firmware with manufacturing one if
725 * manufacturing mode is enabled
726 */
727 if (mfg_mode)
728 strscpy(adapter->fw_name, MFG_FIRMWARE,
729 sizeof(adapter->fw_name));
730
731 if (req_fw_nowait) {
732 ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name,
733 adapter->dev, GFP_KERNEL, adapter,
734 mwifiex_fw_dpc);
735 } else {
736 ret = request_firmware(&adapter->firmware,
737 adapter->fw_name,
738 adapter->dev);
739 }
740
741 if (ret < 0)
742 mwifiex_dbg(adapter, ERROR, "request_firmware%s error %d\n",
743 req_fw_nowait ? "_nowait" : "", ret);
744 return ret;
745 }
746
747 /*
748 * CFG802.11 network device handler for open.
749 *
750 * Starts the data queue.
751 */
752 static int
mwifiex_open(struct net_device * dev)753 mwifiex_open(struct net_device *dev)
754 {
755 netif_carrier_off(dev);
756
757 return 0;
758 }
759
760 /*
761 * CFG802.11 network device handler for close.
762 */
763 static int
mwifiex_close(struct net_device * dev)764 mwifiex_close(struct net_device *dev)
765 {
766 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
767
768 if (priv->scan_request) {
769 struct cfg80211_scan_info info = {
770 .aborted = true,
771 };
772
773 mwifiex_dbg(priv->adapter, INFO,
774 "aborting scan on ndo_stop\n");
775 cfg80211_scan_done(priv->scan_request, &info);
776 priv->scan_request = NULL;
777 priv->scan_aborting = true;
778 }
779
780 if (priv->sched_scanning) {
781 mwifiex_dbg(priv->adapter, INFO,
782 "aborting bgscan on ndo_stop\n");
783 mwifiex_stop_bg_scan(priv);
784 cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
785 }
786
787 return 0;
788 }
789
790 static bool
mwifiex_bypass_tx_queue(struct mwifiex_private * priv,struct sk_buff * skb)791 mwifiex_bypass_tx_queue(struct mwifiex_private *priv,
792 struct sk_buff *skb)
793 {
794 struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
795
796 if (ntohs(eth_hdr->h_proto) == ETH_P_PAE ||
797 mwifiex_is_skb_mgmt_frame(skb) ||
798 (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
799 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
800 (ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) {
801 mwifiex_dbg(priv->adapter, DATA,
802 "bypass txqueue; eth type %#x, mgmt %d\n",
803 ntohs(eth_hdr->h_proto),
804 mwifiex_is_skb_mgmt_frame(skb));
805 return true;
806 }
807
808 return false;
809 }
810 /*
811 * Add buffer into wmm tx queue and queue work to transmit it.
812 */
mwifiex_queue_tx_pkt(struct mwifiex_private * priv,struct sk_buff * skb)813 int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)
814 {
815 struct netdev_queue *txq;
816 int index = mwifiex_1d_to_wmm_queue[skb->priority];
817
818 if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) {
819 txq = netdev_get_tx_queue(priv->netdev, index);
820 if (!netif_tx_queue_stopped(txq)) {
821 netif_tx_stop_queue(txq);
822 mwifiex_dbg(priv->adapter, DATA,
823 "stop queue: %d\n", index);
824 }
825 }
826
827 if (mwifiex_bypass_tx_queue(priv, skb)) {
828 atomic_inc(&priv->adapter->tx_pending);
829 atomic_inc(&priv->adapter->bypass_tx_pending);
830 mwifiex_wmm_add_buf_bypass_txqueue(priv, skb);
831 } else {
832 atomic_inc(&priv->adapter->tx_pending);
833 mwifiex_wmm_add_buf_txqueue(priv, skb);
834 }
835
836 mwifiex_queue_main_work(priv->adapter);
837
838 return 0;
839 }
840
841 struct sk_buff *
mwifiex_clone_skb_for_tx_status(struct mwifiex_private * priv,struct sk_buff * skb,u8 flag,u64 * cookie)842 mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv,
843 struct sk_buff *skb, u8 flag, u64 *cookie)
844 {
845 struct sk_buff *orig_skb = skb;
846 struct mwifiex_txinfo *tx_info, *orig_tx_info;
847
848 skb = skb_clone(skb, GFP_ATOMIC);
849 if (skb) {
850 int id;
851
852 spin_lock_bh(&priv->ack_status_lock);
853 id = idr_alloc(&priv->ack_status_frames, orig_skb,
854 1, 0x10, GFP_ATOMIC);
855 spin_unlock_bh(&priv->ack_status_lock);
856
857 if (id >= 0) {
858 tx_info = MWIFIEX_SKB_TXCB(skb);
859 tx_info->ack_frame_id = id;
860 tx_info->flags |= flag;
861 orig_tx_info = MWIFIEX_SKB_TXCB(orig_skb);
862 orig_tx_info->ack_frame_id = id;
863 orig_tx_info->flags |= flag;
864
865 if (flag == MWIFIEX_BUF_FLAG_ACTION_TX_STATUS && cookie)
866 orig_tx_info->cookie = *cookie;
867
868 } else if (skb_shared(skb)) {
869 kfree_skb(orig_skb);
870 } else {
871 kfree_skb(skb);
872 skb = orig_skb;
873 }
874 } else {
875 /* couldn't clone -- lose tx status ... */
876 skb = orig_skb;
877 }
878
879 return skb;
880 }
881
882 /*
883 * CFG802.11 network device handler for data transmission.
884 */
885 static netdev_tx_t
mwifiex_hard_start_xmit(struct sk_buff * skb,struct net_device * dev)886 mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
887 {
888 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
889 struct sk_buff *new_skb;
890 struct mwifiex_txinfo *tx_info;
891 bool multicast;
892
893 mwifiex_dbg(priv->adapter, DATA,
894 "data: %lu BSS(%d-%d): Data <= kernel\n",
895 jiffies, priv->bss_type, priv->bss_num);
896
897 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &priv->adapter->work_flags)) {
898 kfree_skb(skb);
899 priv->stats.tx_dropped++;
900 return 0;
901 }
902 if (!skb->len || (skb->len > ETH_FRAME_LEN)) {
903 mwifiex_dbg(priv->adapter, ERROR,
904 "Tx: bad skb len %d\n", skb->len);
905 kfree_skb(skb);
906 priv->stats.tx_dropped++;
907 return 0;
908 }
909 if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) {
910 mwifiex_dbg(priv->adapter, DATA,
911 "data: Tx: insufficient skb headroom %d\n",
912 skb_headroom(skb));
913 /* Insufficient skb headroom - allocate a new skb */
914 new_skb =
915 skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
916 if (unlikely(!new_skb)) {
917 mwifiex_dbg(priv->adapter, ERROR,
918 "Tx: cannot alloca new_skb\n");
919 kfree_skb(skb);
920 priv->stats.tx_dropped++;
921 return 0;
922 }
923 kfree_skb(skb);
924 skb = new_skb;
925 mwifiex_dbg(priv->adapter, INFO,
926 "info: new skb headroomd %d\n",
927 skb_headroom(skb));
928 }
929
930 tx_info = MWIFIEX_SKB_TXCB(skb);
931 memset(tx_info, 0, sizeof(*tx_info));
932 tx_info->bss_num = priv->bss_num;
933 tx_info->bss_type = priv->bss_type;
934 tx_info->pkt_len = skb->len;
935
936 multicast = is_multicast_ether_addr(skb->data);
937
938 if (unlikely(!multicast && skb->sk &&
939 skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS &&
940 priv->adapter->fw_api_ver == MWIFIEX_FW_V15))
941 skb = mwifiex_clone_skb_for_tx_status(priv,
942 skb,
943 MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS, NULL);
944
945 /* Record the current time the packet was queued; used to
946 * determine the amount of time the packet was queued in
947 * the driver before it was sent to the firmware.
948 * The delay is then sent along with the packet to the
949 * firmware for aggregate delay calculation for stats and
950 * MSDU lifetime expiry.
951 */
952 __net_timestamp(skb);
953
954 if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
955 priv->bss_type == MWIFIEX_BSS_TYPE_STA &&
956 !ether_addr_equal_unaligned(priv->cfg_bssid, skb->data)) {
957 if (priv->adapter->auto_tdls && priv->check_tdls_tx)
958 mwifiex_tdls_check_tx(priv, skb);
959 }
960
961 mwifiex_queue_tx_pkt(priv, skb);
962
963 return 0;
964 }
965
mwifiex_set_mac_address(struct mwifiex_private * priv,struct net_device * dev,bool external,u8 * new_mac)966 int mwifiex_set_mac_address(struct mwifiex_private *priv,
967 struct net_device *dev, bool external,
968 u8 *new_mac)
969 {
970 int ret;
971 u64 mac_addr, old_mac_addr;
972
973 old_mac_addr = ether_addr_to_u64(priv->curr_addr);
974
975 if (external) {
976 mac_addr = ether_addr_to_u64(new_mac);
977 } else {
978 /* Internal mac address change */
979 if (priv->bss_type == MWIFIEX_BSS_TYPE_ANY)
980 return -EOPNOTSUPP;
981
982 mac_addr = old_mac_addr;
983
984 if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) {
985 mac_addr |= BIT_ULL(MWIFIEX_MAC_LOCAL_ADMIN_BIT);
986 mac_addr += priv->bss_num;
987 } else if (priv->adapter->priv[0] != priv) {
988 /* Set mac address based on bss_type/bss_num */
989 mac_addr ^= BIT_ULL(priv->bss_type + 8);
990 mac_addr += priv->bss_num;
991 }
992 }
993
994 u64_to_ether_addr(mac_addr, priv->curr_addr);
995
996 /* Send request to firmware */
997 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
998 HostCmd_ACT_GEN_SET, 0, NULL, true);
999
1000 if (ret) {
1001 u64_to_ether_addr(old_mac_addr, priv->curr_addr);
1002 mwifiex_dbg(priv->adapter, ERROR,
1003 "set mac address failed: ret=%d\n", ret);
1004 return ret;
1005 }
1006
1007 eth_hw_addr_set(dev, priv->curr_addr);
1008 return 0;
1009 }
1010
1011 /* CFG802.11 network device handler for setting MAC address.
1012 */
1013 static int
mwifiex_ndo_set_mac_address(struct net_device * dev,void * addr)1014 mwifiex_ndo_set_mac_address(struct net_device *dev, void *addr)
1015 {
1016 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1017 struct sockaddr *hw_addr = addr;
1018
1019 return mwifiex_set_mac_address(priv, dev, true, hw_addr->sa_data);
1020 }
1021
1022 /*
1023 * CFG802.11 network device handler for setting multicast list.
1024 */
mwifiex_set_multicast_list(struct net_device * dev)1025 static void mwifiex_set_multicast_list(struct net_device *dev)
1026 {
1027 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1028 struct mwifiex_multicast_list mcast_list;
1029
1030 if (dev->flags & IFF_PROMISC) {
1031 mcast_list.mode = MWIFIEX_PROMISC_MODE;
1032 } else if (dev->flags & IFF_ALLMULTI ||
1033 netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) {
1034 mcast_list.mode = MWIFIEX_ALL_MULTI_MODE;
1035 } else {
1036 mcast_list.mode = MWIFIEX_MULTICAST_MODE;
1037 mcast_list.num_multicast_addr =
1038 mwifiex_copy_mcast_addr(&mcast_list, dev);
1039 }
1040 mwifiex_request_set_multicast_list(priv, &mcast_list);
1041 }
1042
1043 /*
1044 * CFG802.11 network device handler for transmission timeout.
1045 */
1046 static void
mwifiex_tx_timeout(struct net_device * dev,unsigned int txqueue)1047 mwifiex_tx_timeout(struct net_device *dev, unsigned int txqueue)
1048 {
1049 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1050
1051 priv->num_tx_timeout++;
1052 priv->tx_timeout_cnt++;
1053 mwifiex_dbg(priv->adapter, ERROR,
1054 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
1055 jiffies, priv->tx_timeout_cnt, priv->bss_type,
1056 priv->bss_num);
1057 mwifiex_set_trans_start(dev);
1058
1059 if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&
1060 priv->adapter->if_ops.card_reset) {
1061 mwifiex_dbg(priv->adapter, ERROR,
1062 "tx_timeout_cnt exceeds threshold.\t"
1063 "Triggering card reset!\n");
1064 priv->adapter->if_ops.card_reset(priv->adapter);
1065 }
1066 }
1067
mwifiex_multi_chan_resync(struct mwifiex_adapter * adapter)1068 void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter)
1069 {
1070 struct usb_card_rec *card = adapter->card;
1071 struct mwifiex_private *priv;
1072 u16 tx_buf_size;
1073 int i, ret;
1074
1075 card->mc_resync_flag = true;
1076 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
1077 if (atomic_read(&card->port[i].tx_data_urb_pending)) {
1078 mwifiex_dbg(adapter, WARN, "pending data urb in sys\n");
1079 return;
1080 }
1081 }
1082
1083 card->mc_resync_flag = false;
1084 tx_buf_size = 0xffff;
1085 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1086 ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF,
1087 HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false);
1088 if (ret)
1089 mwifiex_dbg(adapter, ERROR,
1090 "send reconfig tx buf size cmd err\n");
1091 }
1092 EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync);
1093
mwifiex_upload_device_dump(struct mwifiex_adapter * adapter)1094 void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter)
1095 {
1096 /* Dump all the memory data into single file, a userspace script will
1097 * be used to split all the memory data to multiple files
1098 */
1099 mwifiex_dbg(adapter, MSG,
1100 "== mwifiex dump information to /sys/class/devcoredump start\n");
1101 dev_coredumpv(adapter->dev, adapter->devdump_data, adapter->devdump_len,
1102 GFP_KERNEL);
1103 mwifiex_dbg(adapter, MSG,
1104 "== mwifiex dump information to /sys/class/devcoredump end\n");
1105
1106 /* Device dump data will be freed in device coredump release function
1107 * after 5 min. Here reset adapter->devdump_data and ->devdump_len
1108 * to avoid it been accidentally reused.
1109 */
1110 adapter->devdump_data = NULL;
1111 adapter->devdump_len = 0;
1112 }
1113 EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump);
1114
mwifiex_drv_info_dump(struct mwifiex_adapter * adapter)1115 void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter)
1116 {
1117 char *p;
1118 char drv_version[64];
1119 struct usb_card_rec *cardp;
1120 struct sdio_mmc_card *sdio_card;
1121 struct mwifiex_private *priv;
1122 int i, idx;
1123 struct netdev_queue *txq;
1124 struct mwifiex_debug_info *debug_info;
1125
1126 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n");
1127
1128 p = adapter->devdump_data;
1129 strcpy(p, "========Start dump driverinfo========\n");
1130 p += strlen("========Start dump driverinfo========\n");
1131 p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
1132
1133 mwifiex_drv_get_driver_version(adapter, drv_version,
1134 sizeof(drv_version) - 1);
1135 p += sprintf(p, "driver_version = %s\n", drv_version);
1136
1137 if (adapter->iface_type == MWIFIEX_USB) {
1138 cardp = (struct usb_card_rec *)adapter->card;
1139 p += sprintf(p, "tx_cmd_urb_pending = %d\n",
1140 atomic_read(&cardp->tx_cmd_urb_pending));
1141 p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n",
1142 atomic_read(&cardp->port[0].tx_data_urb_pending));
1143 p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n",
1144 atomic_read(&cardp->port[1].tx_data_urb_pending));
1145 p += sprintf(p, "rx_cmd_urb_pending = %d\n",
1146 atomic_read(&cardp->rx_cmd_urb_pending));
1147 p += sprintf(p, "rx_data_urb_pending = %d\n",
1148 atomic_read(&cardp->rx_data_urb_pending));
1149 }
1150
1151 p += sprintf(p, "tx_pending = %d\n",
1152 atomic_read(&adapter->tx_pending));
1153 p += sprintf(p, "rx_pending = %d\n",
1154 atomic_read(&adapter->rx_pending));
1155
1156 if (adapter->iface_type == MWIFIEX_SDIO) {
1157 sdio_card = (struct sdio_mmc_card *)adapter->card;
1158 p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
1159 sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port);
1160 p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
1161 sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port);
1162 }
1163
1164 for (i = 0; i < adapter->priv_num; i++) {
1165 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1166 continue;
1167 priv = adapter->priv[i];
1168 p += sprintf(p, "\n[interface : \"%s\"]\n",
1169 priv->netdev->name);
1170 p += sprintf(p, "wmm_tx_pending[0] = %d\n",
1171 atomic_read(&priv->wmm_tx_pending[0]));
1172 p += sprintf(p, "wmm_tx_pending[1] = %d\n",
1173 atomic_read(&priv->wmm_tx_pending[1]));
1174 p += sprintf(p, "wmm_tx_pending[2] = %d\n",
1175 atomic_read(&priv->wmm_tx_pending[2]));
1176 p += sprintf(p, "wmm_tx_pending[3] = %d\n",
1177 atomic_read(&priv->wmm_tx_pending[3]));
1178 p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ?
1179 "Disconnected" : "Connected");
1180 p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev)
1181 ? "on" : "off"));
1182 for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) {
1183 txq = netdev_get_tx_queue(priv->netdev, idx);
1184 p += sprintf(p, "tx queue %d:%s ", idx,
1185 netif_tx_queue_stopped(txq) ?
1186 "stopped" : "started");
1187 }
1188 p += sprintf(p, "\n%s: num_tx_timeout = %d\n",
1189 priv->netdev->name, priv->num_tx_timeout);
1190 }
1191
1192 if (adapter->iface_type == MWIFIEX_SDIO ||
1193 adapter->iface_type == MWIFIEX_PCIE) {
1194 p += sprintf(p, "\n=== %s register dump===\n",
1195 adapter->iface_type == MWIFIEX_SDIO ?
1196 "SDIO" : "PCIE");
1197 if (adapter->if_ops.reg_dump)
1198 p += adapter->if_ops.reg_dump(adapter, p);
1199 }
1200 p += sprintf(p, "\n=== more debug information\n");
1201 debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);
1202 if (debug_info) {
1203 for (i = 0; i < adapter->priv_num; i++) {
1204 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1205 continue;
1206 priv = adapter->priv[i];
1207 mwifiex_get_debug_info(priv, debug_info);
1208 p += mwifiex_debug_info_to_buffer(priv, p, debug_info);
1209 break;
1210 }
1211 kfree(debug_info);
1212 }
1213
1214 strcpy(p, "\n========End dump========\n");
1215 p += strlen("\n========End dump========\n");
1216 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n");
1217 adapter->devdump_len = p - (char *)adapter->devdump_data;
1218 }
1219 EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump);
1220
mwifiex_prepare_fw_dump_info(struct mwifiex_adapter * adapter)1221 void mwifiex_prepare_fw_dump_info(struct mwifiex_adapter *adapter)
1222 {
1223 u8 idx;
1224 char *fw_dump_ptr;
1225 u32 dump_len = 0;
1226
1227 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1228 struct memory_type_mapping *entry =
1229 &adapter->mem_type_mapping_tbl[idx];
1230
1231 if (entry->mem_ptr) {
1232 dump_len += (strlen("========Start dump ") +
1233 strlen(entry->mem_name) +
1234 strlen("========\n") +
1235 (entry->mem_size + 1) +
1236 strlen("\n========End dump========\n"));
1237 }
1238 }
1239
1240 if (dump_len + 1 + adapter->devdump_len > MWIFIEX_FW_DUMP_SIZE) {
1241 /* Realloc in case buffer overflow */
1242 fw_dump_ptr = vzalloc(dump_len + 1 + adapter->devdump_len);
1243 mwifiex_dbg(adapter, MSG, "Realloc device dump data.\n");
1244 if (!fw_dump_ptr) {
1245 vfree(adapter->devdump_data);
1246 mwifiex_dbg(adapter, ERROR,
1247 "vzalloc devdump data failure!\n");
1248 return;
1249 }
1250
1251 memmove(fw_dump_ptr, adapter->devdump_data,
1252 adapter->devdump_len);
1253 vfree(adapter->devdump_data);
1254 adapter->devdump_data = fw_dump_ptr;
1255 }
1256
1257 fw_dump_ptr = (char *)adapter->devdump_data + adapter->devdump_len;
1258
1259 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1260 struct memory_type_mapping *entry =
1261 &adapter->mem_type_mapping_tbl[idx];
1262
1263 if (entry->mem_ptr) {
1264 strcpy(fw_dump_ptr, "========Start dump ");
1265 fw_dump_ptr += strlen("========Start dump ");
1266
1267 strcpy(fw_dump_ptr, entry->mem_name);
1268 fw_dump_ptr += strlen(entry->mem_name);
1269
1270 strcpy(fw_dump_ptr, "========\n");
1271 fw_dump_ptr += strlen("========\n");
1272
1273 memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1274 fw_dump_ptr += entry->mem_size;
1275
1276 strcpy(fw_dump_ptr, "\n========End dump========\n");
1277 fw_dump_ptr += strlen("\n========End dump========\n");
1278 }
1279 }
1280
1281 adapter->devdump_len = fw_dump_ptr - (char *)adapter->devdump_data;
1282
1283 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1284 struct memory_type_mapping *entry =
1285 &adapter->mem_type_mapping_tbl[idx];
1286
1287 vfree(entry->mem_ptr);
1288 entry->mem_ptr = NULL;
1289 entry->mem_size = 0;
1290 }
1291 }
1292 EXPORT_SYMBOL_GPL(mwifiex_prepare_fw_dump_info);
1293
1294 /*
1295 * CFG802.11 network device handler for statistics retrieval.
1296 */
mwifiex_get_stats(struct net_device * dev)1297 static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
1298 {
1299 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1300
1301 return &priv->stats;
1302 }
1303
1304 static u16
mwifiex_netdev_select_wmm_queue(struct net_device * dev,struct sk_buff * skb,struct net_device * sb_dev)1305 mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb,
1306 struct net_device *sb_dev)
1307 {
1308 skb->priority = cfg80211_classify8021d(skb, NULL);
1309 return mwifiex_1d_to_wmm_queue[skb->priority];
1310 }
1311
1312 /* Network device handlers */
1313 static const struct net_device_ops mwifiex_netdev_ops = {
1314 .ndo_open = mwifiex_open,
1315 .ndo_stop = mwifiex_close,
1316 .ndo_start_xmit = mwifiex_hard_start_xmit,
1317 .ndo_set_mac_address = mwifiex_ndo_set_mac_address,
1318 .ndo_validate_addr = eth_validate_addr,
1319 .ndo_tx_timeout = mwifiex_tx_timeout,
1320 .ndo_get_stats = mwifiex_get_stats,
1321 .ndo_set_rx_mode = mwifiex_set_multicast_list,
1322 .ndo_select_queue = mwifiex_netdev_select_wmm_queue,
1323 };
1324
1325 /*
1326 * This function initializes the private structure parameters.
1327 *
1328 * The following wait queues are initialized -
1329 * - IOCTL wait queue
1330 * - Command wait queue
1331 * - Statistics wait queue
1332 *
1333 * ...and the following default parameters are set -
1334 * - Current key index : Set to 0
1335 * - Rate index : Set to auto
1336 * - Media connected : Set to disconnected
1337 * - Adhoc link sensed : Set to false
1338 * - Nick name : Set to null
1339 * - Number of Tx timeout : Set to 0
1340 * - Device address : Set to current address
1341 * - Rx histogram statistc : Set to 0
1342 *
1343 * In addition, the CFG80211 work queue is also created.
1344 */
mwifiex_init_priv_params(struct mwifiex_private * priv,struct net_device * dev)1345 void mwifiex_init_priv_params(struct mwifiex_private *priv,
1346 struct net_device *dev)
1347 {
1348 dev->netdev_ops = &mwifiex_netdev_ops;
1349 dev->needs_free_netdev = true;
1350 /* Initialize private structure */
1351 priv->current_key_index = 0;
1352 priv->media_connected = false;
1353 memset(priv->mgmt_ie, 0,
1354 sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX);
1355 priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK;
1356 priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK;
1357 priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK;
1358 priv->gen_idx = MWIFIEX_AUTO_IDX_MASK;
1359 priv->num_tx_timeout = 0;
1360 if (is_valid_ether_addr(dev->dev_addr))
1361 ether_addr_copy(priv->curr_addr, dev->dev_addr);
1362 else
1363 ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr);
1364
1365 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
1366 GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
1367 priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL);
1368 if (priv->hist_data)
1369 mwifiex_hist_data_reset(priv);
1370 }
1371 }
1372
1373 /*
1374 * This function check if command is pending.
1375 */
is_command_pending(struct mwifiex_adapter * adapter)1376 int is_command_pending(struct mwifiex_adapter *adapter)
1377 {
1378 int is_cmd_pend_q_empty;
1379
1380 spin_lock_bh(&adapter->cmd_pending_q_lock);
1381 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
1382 spin_unlock_bh(&adapter->cmd_pending_q_lock);
1383
1384 return !is_cmd_pend_q_empty;
1385 }
1386
1387 /*
1388 * This is the RX work queue function.
1389 *
1390 * It handles the RX operations.
1391 */
mwifiex_rx_work_queue(struct work_struct * work)1392 static void mwifiex_rx_work_queue(struct work_struct *work)
1393 {
1394 struct mwifiex_adapter *adapter =
1395 container_of(work, struct mwifiex_adapter, rx_work);
1396
1397 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1398 return;
1399 mwifiex_process_rx(adapter);
1400 }
1401
1402 /*
1403 * This is the main work queue function.
1404 *
1405 * It handles the main process, which in turn handles the complete
1406 * driver operations.
1407 */
mwifiex_main_work_queue(struct work_struct * work)1408 static void mwifiex_main_work_queue(struct work_struct *work)
1409 {
1410 struct mwifiex_adapter *adapter =
1411 container_of(work, struct mwifiex_adapter, main_work);
1412
1413 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1414 return;
1415 mwifiex_main_process(adapter);
1416 }
1417
1418 /* Common teardown code used for both device removal and reset */
mwifiex_uninit_sw(struct mwifiex_adapter * adapter)1419 static void mwifiex_uninit_sw(struct mwifiex_adapter *adapter)
1420 {
1421 struct mwifiex_private *priv;
1422 int i;
1423
1424 /* We can no longer handle interrupts once we start doing the teardown
1425 * below.
1426 */
1427 if (adapter->if_ops.disable_int)
1428 adapter->if_ops.disable_int(adapter);
1429
1430 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1431 mwifiex_terminate_workqueue(adapter);
1432 adapter->int_status = 0;
1433
1434 /* Stop data */
1435 for (i = 0; i < adapter->priv_num; i++) {
1436 priv = adapter->priv[i];
1437 if (priv && priv->netdev) {
1438 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
1439 if (netif_carrier_ok(priv->netdev))
1440 netif_carrier_off(priv->netdev);
1441 netif_device_detach(priv->netdev);
1442 }
1443 }
1444
1445 mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n");
1446 mwifiex_shutdown_drv(adapter);
1447 mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n");
1448
1449 if (atomic_read(&adapter->rx_pending) ||
1450 atomic_read(&adapter->tx_pending) ||
1451 atomic_read(&adapter->cmd_pending)) {
1452 mwifiex_dbg(adapter, ERROR,
1453 "rx_pending=%d, tx_pending=%d,\t"
1454 "cmd_pending=%d\n",
1455 atomic_read(&adapter->rx_pending),
1456 atomic_read(&adapter->tx_pending),
1457 atomic_read(&adapter->cmd_pending));
1458 }
1459
1460 for (i = 0; i < adapter->priv_num; i++) {
1461 priv = adapter->priv[i];
1462 if (!priv)
1463 continue;
1464 rtnl_lock();
1465 if (priv->netdev &&
1466 priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED) {
1467 /*
1468 * Close the netdev now, because if we do it later, the
1469 * netdev notifiers will need to acquire the wiphy lock
1470 * again --> deadlock.
1471 */
1472 dev_close(priv->wdev.netdev);
1473 wiphy_lock(adapter->wiphy);
1474 mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
1475 wiphy_unlock(adapter->wiphy);
1476 }
1477 rtnl_unlock();
1478 }
1479
1480 wiphy_unregister(adapter->wiphy);
1481 wiphy_free(adapter->wiphy);
1482 adapter->wiphy = NULL;
1483
1484 vfree(adapter->chan_stats);
1485 mwifiex_free_cmd_buffers(adapter);
1486 }
1487
1488 /*
1489 * This function can be used for shutting down the adapter SW.
1490 */
mwifiex_shutdown_sw(struct mwifiex_adapter * adapter)1491 int mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
1492 {
1493 struct mwifiex_private *priv;
1494
1495 if (!adapter)
1496 return 0;
1497
1498 wait_for_completion(adapter->fw_done);
1499 /* Caller should ensure we aren't suspending while this happens */
1500 reinit_completion(adapter->fw_done);
1501
1502 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1503 mwifiex_deauthenticate(priv, NULL);
1504
1505 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
1506
1507 mwifiex_uninit_sw(adapter);
1508 adapter->is_up = false;
1509
1510 if (adapter->if_ops.down_dev)
1511 adapter->if_ops.down_dev(adapter);
1512
1513 return 0;
1514 }
1515 EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw);
1516
1517 /* This function can be used for reinitting the adapter SW. Required
1518 * code is extracted from mwifiex_add_card()
1519 */
1520 int
mwifiex_reinit_sw(struct mwifiex_adapter * adapter)1521 mwifiex_reinit_sw(struct mwifiex_adapter *adapter)
1522 {
1523 int ret;
1524
1525 mwifiex_init_lock_list(adapter);
1526 if (adapter->if_ops.up_dev)
1527 adapter->if_ops.up_dev(adapter);
1528
1529 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1530 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1531 init_waitqueue_head(&adapter->init_wait_q);
1532 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
1533 adapter->hs_activated = false;
1534 clear_bit(MWIFIEX_IS_CMD_TIMEDOUT, &adapter->work_flags);
1535 init_waitqueue_head(&adapter->hs_activate_wait_q);
1536 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1537 adapter->cmd_wait_q.status = 0;
1538 adapter->scan_wait_q_woken = false;
1539
1540 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1541 adapter->rx_work_enabled = true;
1542
1543 adapter->workqueue =
1544 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1545 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0);
1546 if (!adapter->workqueue)
1547 goto err_kmalloc;
1548
1549 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1550
1551 if (adapter->rx_work_enabled) {
1552 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1553 WQ_HIGHPRI |
1554 WQ_MEM_RECLAIM |
1555 WQ_UNBOUND, 0);
1556 if (!adapter->rx_workqueue)
1557 goto err_kmalloc;
1558 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1559 }
1560
1561 /* Register the device. Fill up the private data structure with
1562 * relevant information from the card. Some code extracted from
1563 * mwifiex_register_dev()
1564 */
1565 mwifiex_dbg(adapter, INFO, "%s, mwifiex_init_hw_fw()...\n", __func__);
1566
1567 if (mwifiex_init_hw_fw(adapter, false)) {
1568 mwifiex_dbg(adapter, ERROR,
1569 "%s: firmware init failed\n", __func__);
1570 goto err_init_fw;
1571 }
1572
1573 /* _mwifiex_fw_dpc() does its own cleanup */
1574 ret = _mwifiex_fw_dpc(adapter->firmware, adapter);
1575 if (ret) {
1576 pr_err("Failed to bring up adapter: %d\n", ret);
1577 return ret;
1578 }
1579 mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
1580
1581 return 0;
1582
1583 err_init_fw:
1584 mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__);
1585 if (adapter->if_ops.unregister_dev)
1586 adapter->if_ops.unregister_dev(adapter);
1587
1588 err_kmalloc:
1589 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1590 mwifiex_terminate_workqueue(adapter);
1591 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1592 mwifiex_dbg(adapter, ERROR,
1593 "info: %s: shutdown mwifiex\n", __func__);
1594 mwifiex_shutdown_drv(adapter);
1595 mwifiex_free_cmd_buffers(adapter);
1596 }
1597
1598 complete_all(adapter->fw_done);
1599 mwifiex_dbg(adapter, INFO, "%s, error\n", __func__);
1600
1601 return -1;
1602 }
1603 EXPORT_SYMBOL_GPL(mwifiex_reinit_sw);
1604
mwifiex_irq_wakeup_handler(int irq,void * priv)1605 static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv)
1606 {
1607 struct mwifiex_adapter *adapter = priv;
1608
1609 dev_dbg(adapter->dev, "%s: wake by wifi", __func__);
1610 adapter->wake_by_wifi = true;
1611 disable_irq_nosync(irq);
1612
1613 /* Notify PM core we are wakeup source */
1614 pm_wakeup_event(adapter->dev, 0);
1615 pm_system_wakeup();
1616
1617 return IRQ_HANDLED;
1618 }
1619
mwifiex_probe_of(struct mwifiex_adapter * adapter)1620 static void mwifiex_probe_of(struct mwifiex_adapter *adapter)
1621 {
1622 int ret;
1623 struct device *dev = adapter->dev;
1624
1625 if (!dev->of_node)
1626 goto err_exit;
1627
1628 adapter->dt_node = dev->of_node;
1629 adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0);
1630 if (!adapter->irq_wakeup) {
1631 dev_dbg(dev, "fail to parse irq_wakeup from device tree\n");
1632 goto err_exit;
1633 }
1634
1635 ret = devm_request_irq(dev, adapter->irq_wakeup,
1636 mwifiex_irq_wakeup_handler, IRQF_TRIGGER_LOW,
1637 "wifi_wake", adapter);
1638 if (ret) {
1639 dev_err(dev, "Failed to request irq_wakeup %d (%d)\n",
1640 adapter->irq_wakeup, ret);
1641 goto err_exit;
1642 }
1643
1644 disable_irq(adapter->irq_wakeup);
1645 if (device_init_wakeup(dev, true)) {
1646 dev_err(dev, "fail to init wakeup for mwifiex\n");
1647 goto err_exit;
1648 }
1649 return;
1650
1651 err_exit:
1652 adapter->irq_wakeup = -1;
1653 }
1654
1655 /*
1656 * This function adds the card.
1657 *
1658 * This function follows the following major steps to set up the device -
1659 * - Initialize software. This includes probing the card, registering
1660 * the interface operations table, and allocating/initializing the
1661 * adapter structure
1662 * - Set up the netlink socket
1663 * - Create and start the main work queue
1664 * - Register the device
1665 * - Initialize firmware and hardware
1666 * - Add logical interfaces
1667 */
1668 int
mwifiex_add_card(void * card,struct completion * fw_done,struct mwifiex_if_ops * if_ops,u8 iface_type,struct device * dev)1669 mwifiex_add_card(void *card, struct completion *fw_done,
1670 struct mwifiex_if_ops *if_ops, u8 iface_type,
1671 struct device *dev)
1672 {
1673 struct mwifiex_adapter *adapter;
1674
1675 if (mwifiex_register(card, dev, if_ops, (void **)&adapter)) {
1676 pr_err("%s: software init failed\n", __func__);
1677 goto err_init_sw;
1678 }
1679
1680 mwifiex_probe_of(adapter);
1681
1682 adapter->iface_type = iface_type;
1683 adapter->fw_done = fw_done;
1684
1685 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1686 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1687 init_waitqueue_head(&adapter->init_wait_q);
1688 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
1689 adapter->hs_activated = false;
1690 init_waitqueue_head(&adapter->hs_activate_wait_q);
1691 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1692 adapter->cmd_wait_q.status = 0;
1693 adapter->scan_wait_q_woken = false;
1694
1695 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1696 adapter->rx_work_enabled = true;
1697
1698 adapter->workqueue =
1699 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1700 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0);
1701 if (!adapter->workqueue)
1702 goto err_kmalloc;
1703
1704 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1705
1706 if (adapter->rx_work_enabled) {
1707 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1708 WQ_HIGHPRI |
1709 WQ_MEM_RECLAIM |
1710 WQ_UNBOUND, 0);
1711 if (!adapter->rx_workqueue)
1712 goto err_kmalloc;
1713
1714 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1715 }
1716
1717 /* Register the device. Fill up the private data structure with relevant
1718 information from the card. */
1719 if (adapter->if_ops.register_dev(adapter)) {
1720 pr_err("%s: failed to register mwifiex device\n", __func__);
1721 goto err_registerdev;
1722 }
1723
1724 if (mwifiex_init_hw_fw(adapter, true)) {
1725 pr_err("%s: firmware init failed\n", __func__);
1726 goto err_init_fw;
1727 }
1728
1729 return 0;
1730
1731 err_init_fw:
1732 pr_debug("info: %s: unregister device\n", __func__);
1733 if (adapter->if_ops.unregister_dev)
1734 adapter->if_ops.unregister_dev(adapter);
1735 err_registerdev:
1736 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1737 mwifiex_terminate_workqueue(adapter);
1738 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1739 pr_debug("info: %s: shutdown mwifiex\n", __func__);
1740 mwifiex_shutdown_drv(adapter);
1741 mwifiex_free_cmd_buffers(adapter);
1742 }
1743 err_kmalloc:
1744 if (adapter->irq_wakeup >= 0)
1745 device_init_wakeup(adapter->dev, false);
1746 mwifiex_free_adapter(adapter);
1747
1748 err_init_sw:
1749
1750 return -1;
1751 }
1752 EXPORT_SYMBOL_GPL(mwifiex_add_card);
1753
1754 /*
1755 * This function removes the card.
1756 *
1757 * This function follows the following major steps to remove the device -
1758 * - Stop data traffic
1759 * - Shutdown firmware
1760 * - Remove the logical interfaces
1761 * - Terminate the work queue
1762 * - Unregister the device
1763 * - Free the adapter structure
1764 */
mwifiex_remove_card(struct mwifiex_adapter * adapter)1765 int mwifiex_remove_card(struct mwifiex_adapter *adapter)
1766 {
1767 if (!adapter)
1768 return 0;
1769
1770 if (adapter->is_up)
1771 mwifiex_uninit_sw(adapter);
1772
1773 if (adapter->irq_wakeup >= 0)
1774 device_init_wakeup(adapter->dev, false);
1775
1776 /* Unregister device */
1777 mwifiex_dbg(adapter, INFO,
1778 "info: unregister device\n");
1779 if (adapter->if_ops.unregister_dev)
1780 adapter->if_ops.unregister_dev(adapter);
1781 /* Free adapter structure */
1782 mwifiex_dbg(adapter, INFO,
1783 "info: free adapter\n");
1784 mwifiex_free_adapter(adapter);
1785
1786 return 0;
1787 }
1788 EXPORT_SYMBOL_GPL(mwifiex_remove_card);
1789
_mwifiex_dbg(const struct mwifiex_adapter * adapter,int mask,const char * fmt,...)1790 void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
1791 const char *fmt, ...)
1792 {
1793 struct va_format vaf;
1794 va_list args;
1795
1796 if (!(adapter->debug_mask & mask))
1797 return;
1798
1799 va_start(args, fmt);
1800
1801 vaf.fmt = fmt;
1802 vaf.va = &args;
1803
1804 if (adapter->dev)
1805 dev_info(adapter->dev, "%pV", &vaf);
1806 else
1807 pr_info("%pV", &vaf);
1808
1809 va_end(args);
1810 }
1811 EXPORT_SYMBOL_GPL(_mwifiex_dbg);
1812
1813 /*
1814 * This function initializes the module.
1815 *
1816 * The debug FS is also initialized if configured.
1817 */
1818 static int
mwifiex_init_module(void)1819 mwifiex_init_module(void)
1820 {
1821 #ifdef CONFIG_DEBUG_FS
1822 mwifiex_debugfs_init();
1823 #endif
1824 return 0;
1825 }
1826
1827 /*
1828 * This function cleans up the module.
1829 *
1830 * The debug FS is removed if available.
1831 */
1832 static void
mwifiex_cleanup_module(void)1833 mwifiex_cleanup_module(void)
1834 {
1835 #ifdef CONFIG_DEBUG_FS
1836 mwifiex_debugfs_remove();
1837 #endif
1838 }
1839
1840 module_init(mwifiex_init_module);
1841 module_exit(mwifiex_cleanup_module);
1842
1843 MODULE_AUTHOR("Marvell International Ltd.");
1844 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION);
1845 MODULE_VERSION(VERSION);
1846 MODULE_LICENSE("GPL v2");
1847