1 /*
2 * Marvell Wireless LAN device driver: major functions
3 *
4 * Copyright (C) 2011-2014, Marvell International Ltd.
5 *
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13 *
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
18 */
19
20 #include <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 /*
52 * This function registers the device and performs all the necessary
53 * initializations.
54 *
55 * The following initialization operations are performed -
56 * - Allocate adapter structure
57 * - Save interface specific operations table in adapter
58 * - Call interface specific initialization routine
59 * - Allocate private structures
60 * - Set default adapter structure parameters
61 * - Initialize locks
62 *
63 * In case of any errors during inittialization, this function also ensures
64 * proper cleanup before exiting.
65 */
mwifiex_register(void * card,struct device * dev,struct mwifiex_if_ops * if_ops,void ** padapter)66 static int mwifiex_register(void *card, struct device *dev,
67 struct mwifiex_if_ops *if_ops, void **padapter)
68 {
69 struct mwifiex_adapter *adapter;
70 int i;
71
72 adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL);
73 if (!adapter)
74 return -ENOMEM;
75
76 *padapter = adapter;
77 adapter->dev = dev;
78 adapter->card = card;
79
80 /* Save interface specific operations in adapter */
81 memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));
82 adapter->debug_mask = debug_mask;
83
84 /* card specific initialization has been deferred until now .. */
85 if (adapter->if_ops.init_if)
86 if (adapter->if_ops.init_if(adapter))
87 goto error;
88
89 adapter->priv_num = 0;
90
91 for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) {
92 /* Allocate memory for private structure */
93 adapter->priv[i] =
94 kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL);
95 if (!adapter->priv[i])
96 goto error;
97
98 adapter->priv[i]->adapter = adapter;
99 adapter->priv_num++;
100 }
101 mwifiex_init_lock_list(adapter);
102
103 timer_setup(&adapter->cmd_timer, mwifiex_cmd_timeout_func, 0);
104
105 return 0;
106
107 error:
108 mwifiex_dbg(adapter, ERROR,
109 "info: leave mwifiex_register with error\n");
110
111 for (i = 0; i < adapter->priv_num; i++)
112 kfree(adapter->priv[i]);
113
114 kfree(adapter);
115
116 return -1;
117 }
118
119 /*
120 * This function unregisters the device and performs all the necessary
121 * cleanups.
122 *
123 * The following cleanup operations are performed -
124 * - Free the timers
125 * - Free beacon buffers
126 * - Free private structures
127 * - Free adapter structure
128 */
mwifiex_unregister(struct mwifiex_adapter * adapter)129 static int mwifiex_unregister(struct mwifiex_adapter *adapter)
130 {
131 s32 i;
132
133 if (adapter->if_ops.cleanup_if)
134 adapter->if_ops.cleanup_if(adapter);
135
136 del_timer_sync(&adapter->cmd_timer);
137
138 /* Free private structures */
139 for (i = 0; i < adapter->priv_num; i++) {
140 if (adapter->priv[i]) {
141 mwifiex_free_curr_bcn(adapter->priv[i]);
142 kfree(adapter->priv[i]);
143 }
144 }
145
146 if (adapter->nd_info) {
147 for (i = 0 ; i < adapter->nd_info->n_matches ; i++)
148 kfree(adapter->nd_info->matches[i]);
149 kfree(adapter->nd_info);
150 adapter->nd_info = NULL;
151 }
152
153 kfree(adapter->regd);
154
155 kfree(adapter);
156 return 0;
157 }
158
mwifiex_queue_main_work(struct mwifiex_adapter * adapter)159 void mwifiex_queue_main_work(struct mwifiex_adapter *adapter)
160 {
161 unsigned long flags;
162
163 spin_lock_irqsave(&adapter->main_proc_lock, flags);
164 if (adapter->mwifiex_processing) {
165 adapter->more_task_flag = true;
166 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
167 } else {
168 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
169 queue_work(adapter->workqueue, &adapter->main_work);
170 }
171 }
172 EXPORT_SYMBOL_GPL(mwifiex_queue_main_work);
173
mwifiex_queue_rx_work(struct mwifiex_adapter * adapter)174 static void mwifiex_queue_rx_work(struct mwifiex_adapter *adapter)
175 {
176 spin_lock_bh(&adapter->rx_proc_lock);
177 if (adapter->rx_processing) {
178 spin_unlock_bh(&adapter->rx_proc_lock);
179 } else {
180 spin_unlock_bh(&adapter->rx_proc_lock);
181 queue_work(adapter->rx_workqueue, &adapter->rx_work);
182 }
183 }
184
mwifiex_process_rx(struct mwifiex_adapter * adapter)185 static int mwifiex_process_rx(struct mwifiex_adapter *adapter)
186 {
187 struct sk_buff *skb;
188 struct mwifiex_rxinfo *rx_info;
189
190 spin_lock_bh(&adapter->rx_proc_lock);
191 if (adapter->rx_processing || adapter->rx_locked) {
192 spin_unlock_bh(&adapter->rx_proc_lock);
193 goto exit_rx_proc;
194 } else {
195 adapter->rx_processing = true;
196 spin_unlock_bh(&adapter->rx_proc_lock);
197 }
198
199 /* Check for Rx data */
200 while ((skb = skb_dequeue(&adapter->rx_data_q))) {
201 atomic_dec(&adapter->rx_pending);
202 if ((adapter->delay_main_work ||
203 adapter->iface_type == MWIFIEX_USB) &&
204 (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {
205 if (adapter->if_ops.submit_rem_rx_urbs)
206 adapter->if_ops.submit_rem_rx_urbs(adapter);
207 adapter->delay_main_work = false;
208 mwifiex_queue_main_work(adapter);
209 }
210 rx_info = MWIFIEX_SKB_RXCB(skb);
211 if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) {
212 if (adapter->if_ops.deaggr_pkt)
213 adapter->if_ops.deaggr_pkt(adapter, skb);
214 dev_kfree_skb_any(skb);
215 } else {
216 mwifiex_handle_rx_packet(adapter, skb);
217 }
218 }
219 spin_lock_bh(&adapter->rx_proc_lock);
220 adapter->rx_processing = false;
221 spin_unlock_bh(&adapter->rx_proc_lock);
222
223 exit_rx_proc:
224 return 0;
225 }
226
227 /*
228 * The main process.
229 *
230 * This function is the main procedure of the driver and handles various driver
231 * operations. It runs in a loop and provides the core functionalities.
232 *
233 * The main responsibilities of this function are -
234 * - Ensure concurrency control
235 * - Handle pending interrupts and call interrupt handlers
236 * - Wake up the card if required
237 * - Handle command responses and call response handlers
238 * - Handle events and call event handlers
239 * - Execute pending commands
240 * - Transmit pending data packets
241 */
mwifiex_main_process(struct mwifiex_adapter * adapter)242 int mwifiex_main_process(struct mwifiex_adapter *adapter)
243 {
244 int ret = 0;
245 unsigned long flags;
246
247 spin_lock_irqsave(&adapter->main_proc_lock, flags);
248
249 /* Check if already processing */
250 if (adapter->mwifiex_processing || adapter->main_locked) {
251 adapter->more_task_flag = true;
252 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
253 return 0;
254 } else {
255 adapter->mwifiex_processing = true;
256 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
257 }
258 process_start:
259 do {
260 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
261 break;
262
263 /* For non-USB interfaces, If we process interrupts first, it
264 * would increase RX pending even further. Avoid this by
265 * checking if rx_pending has crossed high threshold and
266 * schedule rx work queue and then process interrupts.
267 * For USB interface, there are no interrupts. We already have
268 * HIGH_RX_PENDING check in usb.c
269 */
270 if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING &&
271 adapter->iface_type != MWIFIEX_USB) {
272 adapter->delay_main_work = true;
273 mwifiex_queue_rx_work(adapter);
274 break;
275 }
276
277 /* Handle pending interrupt if any */
278 if (adapter->int_status) {
279 if (adapter->hs_activated)
280 mwifiex_process_hs_config(adapter);
281 if (adapter->if_ops.process_int_status)
282 adapter->if_ops.process_int_status(adapter);
283 }
284
285 if (adapter->rx_work_enabled && adapter->data_received)
286 mwifiex_queue_rx_work(adapter);
287
288 /* Need to wake up the card ? */
289 if ((adapter->ps_state == PS_STATE_SLEEP) &&
290 (adapter->pm_wakeup_card_req &&
291 !adapter->pm_wakeup_fw_try) &&
292 (is_command_pending(adapter) ||
293 !skb_queue_empty(&adapter->tx_data_q) ||
294 !mwifiex_bypass_txlist_empty(adapter) ||
295 !mwifiex_wmm_lists_empty(adapter))) {
296 adapter->pm_wakeup_fw_try = true;
297 mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3));
298 adapter->if_ops.wakeup(adapter);
299 continue;
300 }
301
302 if (IS_CARD_RX_RCVD(adapter)) {
303 adapter->data_received = false;
304 adapter->pm_wakeup_fw_try = false;
305 del_timer(&adapter->wakeup_timer);
306 if (adapter->ps_state == PS_STATE_SLEEP)
307 adapter->ps_state = PS_STATE_AWAKE;
308 } else {
309 /* We have tried to wakeup the card already */
310 if (adapter->pm_wakeup_fw_try)
311 break;
312 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
313 mwifiex_check_ps_cond(adapter);
314
315 if (adapter->ps_state != PS_STATE_AWAKE)
316 break;
317 if (adapter->tx_lock_flag) {
318 if (adapter->iface_type == MWIFIEX_USB) {
319 if (!adapter->usb_mc_setup)
320 break;
321 } else
322 break;
323 }
324
325 if ((!adapter->scan_chan_gap_enabled &&
326 adapter->scan_processing) || adapter->data_sent ||
327 mwifiex_is_tdls_chan_switching
328 (mwifiex_get_priv(adapter,
329 MWIFIEX_BSS_ROLE_STA)) ||
330 (mwifiex_wmm_lists_empty(adapter) &&
331 mwifiex_bypass_txlist_empty(adapter) &&
332 skb_queue_empty(&adapter->tx_data_q))) {
333 if (adapter->cmd_sent || adapter->curr_cmd ||
334 !mwifiex_is_send_cmd_allowed
335 (mwifiex_get_priv(adapter,
336 MWIFIEX_BSS_ROLE_STA)) ||
337 (!is_command_pending(adapter)))
338 break;
339 }
340 }
341
342 /* Check for event */
343 if (adapter->event_received) {
344 adapter->event_received = false;
345 mwifiex_process_event(adapter);
346 }
347
348 /* Check for Cmd Resp */
349 if (adapter->cmd_resp_received) {
350 adapter->cmd_resp_received = false;
351 mwifiex_process_cmdresp(adapter);
352
353 /* call mwifiex back when init_fw is done */
354 if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) {
355 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
356 mwifiex_init_fw_complete(adapter);
357 }
358 }
359
360 /* Check if we need to confirm Sleep Request
361 received previously */
362 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
363 mwifiex_check_ps_cond(adapter);
364
365 /* * The ps_state may have been changed during processing of
366 * Sleep Request event.
367 */
368 if ((adapter->ps_state == PS_STATE_SLEEP) ||
369 (adapter->ps_state == PS_STATE_PRE_SLEEP) ||
370 (adapter->ps_state == PS_STATE_SLEEP_CFM)) {
371 continue;
372 }
373
374 if (adapter->tx_lock_flag) {
375 if (adapter->iface_type == MWIFIEX_USB) {
376 if (!adapter->usb_mc_setup)
377 continue;
378 } else
379 continue;
380 }
381
382 if (!adapter->cmd_sent && !adapter->curr_cmd &&
383 mwifiex_is_send_cmd_allowed
384 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
385 if (mwifiex_exec_next_cmd(adapter) == -1) {
386 ret = -1;
387 break;
388 }
389 }
390
391 /** If USB Multi channel setup ongoing,
392 * wait for ready to tx data.
393 */
394 if (adapter->iface_type == MWIFIEX_USB &&
395 adapter->usb_mc_setup)
396 continue;
397
398 if ((adapter->scan_chan_gap_enabled ||
399 !adapter->scan_processing) &&
400 !adapter->data_sent &&
401 !skb_queue_empty(&adapter->tx_data_q)) {
402 mwifiex_process_tx_queue(adapter);
403 if (adapter->hs_activated) {
404 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
405 &adapter->work_flags);
406 mwifiex_hs_activated_event
407 (mwifiex_get_priv
408 (adapter, MWIFIEX_BSS_ROLE_ANY),
409 false);
410 }
411 }
412
413 if ((adapter->scan_chan_gap_enabled ||
414 !adapter->scan_processing) &&
415 !adapter->data_sent &&
416 !mwifiex_bypass_txlist_empty(adapter) &&
417 !mwifiex_is_tdls_chan_switching
418 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
419 mwifiex_process_bypass_tx(adapter);
420 if (adapter->hs_activated) {
421 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
422 &adapter->work_flags);
423 mwifiex_hs_activated_event
424 (mwifiex_get_priv
425 (adapter, MWIFIEX_BSS_ROLE_ANY),
426 false);
427 }
428 }
429
430 if ((adapter->scan_chan_gap_enabled ||
431 !adapter->scan_processing) &&
432 !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) &&
433 !mwifiex_is_tdls_chan_switching
434 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
435 mwifiex_wmm_process_tx(adapter);
436 if (adapter->hs_activated) {
437 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
438 &adapter->work_flags);
439 mwifiex_hs_activated_event
440 (mwifiex_get_priv
441 (adapter, MWIFIEX_BSS_ROLE_ANY),
442 false);
443 }
444 }
445
446 if (adapter->delay_null_pkt && !adapter->cmd_sent &&
447 !adapter->curr_cmd && !is_command_pending(adapter) &&
448 (mwifiex_wmm_lists_empty(adapter) &&
449 mwifiex_bypass_txlist_empty(adapter) &&
450 skb_queue_empty(&adapter->tx_data_q))) {
451 if (!mwifiex_send_null_packet
452 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
453 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
454 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) {
455 adapter->delay_null_pkt = false;
456 adapter->ps_state = PS_STATE_SLEEP;
457 }
458 break;
459 }
460 } while (true);
461
462 spin_lock_irqsave(&adapter->main_proc_lock, flags);
463 if (adapter->more_task_flag) {
464 adapter->more_task_flag = false;
465 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
466 goto process_start;
467 }
468 adapter->mwifiex_processing = false;
469 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
470
471 return ret;
472 }
473 EXPORT_SYMBOL_GPL(mwifiex_main_process);
474
475 /*
476 * This function frees the adapter structure.
477 *
478 * Additionally, this closes the netlink socket, frees the timers
479 * and private structures.
480 */
mwifiex_free_adapter(struct mwifiex_adapter * adapter)481 static void mwifiex_free_adapter(struct mwifiex_adapter *adapter)
482 {
483 if (!adapter) {
484 pr_err("%s: adapter is NULL\n", __func__);
485 return;
486 }
487
488 mwifiex_unregister(adapter);
489 pr_debug("info: %s: free adapter\n", __func__);
490 }
491
492 /*
493 * This function cancels all works in the queue and destroys
494 * the main workqueue.
495 */
mwifiex_terminate_workqueue(struct mwifiex_adapter * adapter)496 static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter)
497 {
498 if (adapter->workqueue) {
499 flush_workqueue(adapter->workqueue);
500 destroy_workqueue(adapter->workqueue);
501 adapter->workqueue = NULL;
502 }
503
504 if (adapter->rx_workqueue) {
505 flush_workqueue(adapter->rx_workqueue);
506 destroy_workqueue(adapter->rx_workqueue);
507 adapter->rx_workqueue = NULL;
508 }
509 }
510
511 /*
512 * This function gets firmware and initializes it.
513 *
514 * The main initialization steps followed are -
515 * - Download the correct firmware to card
516 * - Issue the init commands to firmware
517 */
_mwifiex_fw_dpc(const struct firmware * firmware,void * context)518 static int _mwifiex_fw_dpc(const struct firmware *firmware, void *context)
519 {
520 int ret;
521 char fmt[64];
522 struct mwifiex_adapter *adapter = context;
523 struct mwifiex_fw_image fw;
524 bool init_failed = false;
525 struct wireless_dev *wdev;
526 struct completion *fw_done = adapter->fw_done;
527
528 if (!firmware) {
529 mwifiex_dbg(adapter, ERROR,
530 "Failed to get firmware %s\n", adapter->fw_name);
531 goto err_dnld_fw;
532 }
533
534 memset(&fw, 0, sizeof(struct mwifiex_fw_image));
535 adapter->firmware = firmware;
536 fw.fw_buf = (u8 *) adapter->firmware->data;
537 fw.fw_len = adapter->firmware->size;
538
539 if (adapter->if_ops.dnld_fw) {
540 ret = adapter->if_ops.dnld_fw(adapter, &fw);
541 } else {
542 ret = mwifiex_dnld_fw(adapter, &fw);
543 }
544
545 if (ret == -1)
546 goto err_dnld_fw;
547
548 mwifiex_dbg(adapter, MSG, "WLAN FW is active\n");
549
550 if (cal_data_cfg) {
551 if ((request_firmware(&adapter->cal_data, cal_data_cfg,
552 adapter->dev)) < 0)
553 mwifiex_dbg(adapter, ERROR,
554 "Cal data request_firmware() failed\n");
555 }
556
557 /* enable host interrupt after fw dnld is successful */
558 if (adapter->if_ops.enable_int) {
559 if (adapter->if_ops.enable_int(adapter))
560 goto err_dnld_fw;
561 }
562
563 adapter->init_wait_q_woken = false;
564 ret = mwifiex_init_fw(adapter);
565 if (ret == -1) {
566 goto err_init_fw;
567 } else if (!ret) {
568 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
569 goto done;
570 }
571 /* Wait for mwifiex_init to complete */
572 if (!adapter->mfg_mode) {
573 wait_event_interruptible(adapter->init_wait_q,
574 adapter->init_wait_q_woken);
575 if (adapter->hw_status != MWIFIEX_HW_STATUS_READY)
576 goto err_init_fw;
577 }
578
579 if (!adapter->wiphy) {
580 if (mwifiex_register_cfg80211(adapter)) {
581 mwifiex_dbg(adapter, ERROR,
582 "cannot register with cfg80211\n");
583 goto err_init_fw;
584 }
585 }
586
587 if (mwifiex_init_channel_scan_gap(adapter)) {
588 mwifiex_dbg(adapter, ERROR,
589 "could not init channel stats table\n");
590 goto err_init_chan_scan;
591 }
592
593 if (driver_mode) {
594 driver_mode &= MWIFIEX_DRIVER_MODE_BITMASK;
595 driver_mode |= MWIFIEX_DRIVER_MODE_STA;
596 }
597
598 rtnl_lock();
599 /* Create station interface by default */
600 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM,
601 NL80211_IFTYPE_STATION, NULL);
602 if (IS_ERR(wdev)) {
603 mwifiex_dbg(adapter, ERROR,
604 "cannot create default STA interface\n");
605 rtnl_unlock();
606 goto err_add_intf;
607 }
608
609 if (driver_mode & MWIFIEX_DRIVER_MODE_UAP) {
610 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM,
611 NL80211_IFTYPE_AP, NULL);
612 if (IS_ERR(wdev)) {
613 mwifiex_dbg(adapter, ERROR,
614 "cannot create AP interface\n");
615 rtnl_unlock();
616 goto err_add_intf;
617 }
618 }
619
620 if (driver_mode & MWIFIEX_DRIVER_MODE_P2P) {
621 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", NET_NAME_ENUM,
622 NL80211_IFTYPE_P2P_CLIENT, NULL);
623 if (IS_ERR(wdev)) {
624 mwifiex_dbg(adapter, ERROR,
625 "cannot create p2p client interface\n");
626 rtnl_unlock();
627 goto err_add_intf;
628 }
629 }
630 rtnl_unlock();
631
632 mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);
633 mwifiex_dbg(adapter, MSG, "driver_version = %s\n", fmt);
634 goto done;
635
636 err_add_intf:
637 vfree(adapter->chan_stats);
638 err_init_chan_scan:
639 wiphy_unregister(adapter->wiphy);
640 wiphy_free(adapter->wiphy);
641 err_init_fw:
642 if (adapter->if_ops.disable_int)
643 adapter->if_ops.disable_int(adapter);
644 err_dnld_fw:
645 mwifiex_dbg(adapter, ERROR,
646 "info: %s: unregister device\n", __func__);
647 if (adapter->if_ops.unregister_dev)
648 adapter->if_ops.unregister_dev(adapter);
649
650 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
651 mwifiex_terminate_workqueue(adapter);
652
653 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
654 pr_debug("info: %s: shutdown mwifiex\n", __func__);
655 mwifiex_shutdown_drv(adapter);
656 mwifiex_free_cmd_buffers(adapter);
657 }
658
659 init_failed = true;
660 done:
661 if (adapter->cal_data) {
662 release_firmware(adapter->cal_data);
663 adapter->cal_data = NULL;
664 }
665 if (adapter->firmware) {
666 release_firmware(adapter->firmware);
667 adapter->firmware = NULL;
668 }
669 if (init_failed) {
670 if (adapter->irq_wakeup >= 0)
671 device_init_wakeup(adapter->dev, false);
672 mwifiex_free_adapter(adapter);
673 }
674 /* Tell all current and future waiters we're finished */
675 complete_all(fw_done);
676
677 return init_failed ? -EIO : 0;
678 }
679
mwifiex_fw_dpc(const struct firmware * firmware,void * context)680 static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
681 {
682 _mwifiex_fw_dpc(firmware, context);
683 }
684
685 /*
686 * This function gets the firmware and (if called asynchronously) kicks off the
687 * HW init when done.
688 */
mwifiex_init_hw_fw(struct mwifiex_adapter * adapter,bool req_fw_nowait)689 static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter,
690 bool req_fw_nowait)
691 {
692 int ret;
693
694 /* Override default firmware with manufacturing one if
695 * manufacturing mode is enabled
696 */
697 if (mfg_mode) {
698 if (strlcpy(adapter->fw_name, MFG_FIRMWARE,
699 sizeof(adapter->fw_name)) >=
700 sizeof(adapter->fw_name)) {
701 pr_err("%s: fw_name too long!\n", __func__);
702 return -1;
703 }
704 }
705
706 if (req_fw_nowait) {
707 ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name,
708 adapter->dev, GFP_KERNEL, adapter,
709 mwifiex_fw_dpc);
710 } else {
711 ret = request_firmware(&adapter->firmware,
712 adapter->fw_name,
713 adapter->dev);
714 }
715
716 if (ret < 0)
717 mwifiex_dbg(adapter, ERROR, "request_firmware%s error %d\n",
718 req_fw_nowait ? "_nowait" : "", ret);
719 return ret;
720 }
721
722 /*
723 * CFG802.11 network device handler for open.
724 *
725 * Starts the data queue.
726 */
727 static int
mwifiex_open(struct net_device * dev)728 mwifiex_open(struct net_device *dev)
729 {
730 netif_carrier_off(dev);
731
732 return 0;
733 }
734
735 /*
736 * CFG802.11 network device handler for close.
737 */
738 static int
mwifiex_close(struct net_device * dev)739 mwifiex_close(struct net_device *dev)
740 {
741 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
742
743 if (priv->scan_request) {
744 struct cfg80211_scan_info info = {
745 .aborted = true,
746 };
747
748 mwifiex_dbg(priv->adapter, INFO,
749 "aborting scan on ndo_stop\n");
750 cfg80211_scan_done(priv->scan_request, &info);
751 priv->scan_request = NULL;
752 priv->scan_aborting = true;
753 }
754
755 if (priv->sched_scanning) {
756 mwifiex_dbg(priv->adapter, INFO,
757 "aborting bgscan on ndo_stop\n");
758 mwifiex_stop_bg_scan(priv);
759 cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
760 }
761
762 return 0;
763 }
764
765 static bool
mwifiex_bypass_tx_queue(struct mwifiex_private * priv,struct sk_buff * skb)766 mwifiex_bypass_tx_queue(struct mwifiex_private *priv,
767 struct sk_buff *skb)
768 {
769 struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
770
771 if (ntohs(eth_hdr->h_proto) == ETH_P_PAE ||
772 mwifiex_is_skb_mgmt_frame(skb) ||
773 (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
774 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
775 (ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) {
776 mwifiex_dbg(priv->adapter, DATA,
777 "bypass txqueue; eth type %#x, mgmt %d\n",
778 ntohs(eth_hdr->h_proto),
779 mwifiex_is_skb_mgmt_frame(skb));
780 return true;
781 }
782
783 return false;
784 }
785 /*
786 * Add buffer into wmm tx queue and queue work to transmit it.
787 */
mwifiex_queue_tx_pkt(struct mwifiex_private * priv,struct sk_buff * skb)788 int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)
789 {
790 struct netdev_queue *txq;
791 int index = mwifiex_1d_to_wmm_queue[skb->priority];
792
793 if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) {
794 txq = netdev_get_tx_queue(priv->netdev, index);
795 if (!netif_tx_queue_stopped(txq)) {
796 netif_tx_stop_queue(txq);
797 mwifiex_dbg(priv->adapter, DATA,
798 "stop queue: %d\n", index);
799 }
800 }
801
802 if (mwifiex_bypass_tx_queue(priv, skb)) {
803 atomic_inc(&priv->adapter->tx_pending);
804 atomic_inc(&priv->adapter->bypass_tx_pending);
805 mwifiex_wmm_add_buf_bypass_txqueue(priv, skb);
806 } else {
807 atomic_inc(&priv->adapter->tx_pending);
808 mwifiex_wmm_add_buf_txqueue(priv, skb);
809 }
810
811 mwifiex_queue_main_work(priv->adapter);
812
813 return 0;
814 }
815
816 struct sk_buff *
mwifiex_clone_skb_for_tx_status(struct mwifiex_private * priv,struct sk_buff * skb,u8 flag,u64 * cookie)817 mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv,
818 struct sk_buff *skb, u8 flag, u64 *cookie)
819 {
820 struct sk_buff *orig_skb = skb;
821 struct mwifiex_txinfo *tx_info, *orig_tx_info;
822
823 skb = skb_clone(skb, GFP_ATOMIC);
824 if (skb) {
825 int id;
826
827 spin_lock_bh(&priv->ack_status_lock);
828 id = idr_alloc(&priv->ack_status_frames, orig_skb,
829 1, 0x10, GFP_ATOMIC);
830 spin_unlock_bh(&priv->ack_status_lock);
831
832 if (id >= 0) {
833 tx_info = MWIFIEX_SKB_TXCB(skb);
834 tx_info->ack_frame_id = id;
835 tx_info->flags |= flag;
836 orig_tx_info = MWIFIEX_SKB_TXCB(orig_skb);
837 orig_tx_info->ack_frame_id = id;
838 orig_tx_info->flags |= flag;
839
840 if (flag == MWIFIEX_BUF_FLAG_ACTION_TX_STATUS && cookie)
841 orig_tx_info->cookie = *cookie;
842
843 } else if (skb_shared(skb)) {
844 kfree_skb(orig_skb);
845 } else {
846 kfree_skb(skb);
847 skb = orig_skb;
848 }
849 } else {
850 /* couldn't clone -- lose tx status ... */
851 skb = orig_skb;
852 }
853
854 return skb;
855 }
856
857 /*
858 * CFG802.11 network device handler for data transmission.
859 */
860 static netdev_tx_t
mwifiex_hard_start_xmit(struct sk_buff * skb,struct net_device * dev)861 mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
862 {
863 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
864 struct sk_buff *new_skb;
865 struct mwifiex_txinfo *tx_info;
866 bool multicast;
867
868 mwifiex_dbg(priv->adapter, DATA,
869 "data: %lu BSS(%d-%d): Data <= kernel\n",
870 jiffies, priv->bss_type, priv->bss_num);
871
872 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &priv->adapter->work_flags)) {
873 kfree_skb(skb);
874 priv->stats.tx_dropped++;
875 return 0;
876 }
877 if (!skb->len || (skb->len > ETH_FRAME_LEN)) {
878 mwifiex_dbg(priv->adapter, ERROR,
879 "Tx: bad skb len %d\n", skb->len);
880 kfree_skb(skb);
881 priv->stats.tx_dropped++;
882 return 0;
883 }
884 if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) {
885 mwifiex_dbg(priv->adapter, DATA,
886 "data: Tx: insufficient skb headroom %d\n",
887 skb_headroom(skb));
888 /* Insufficient skb headroom - allocate a new skb */
889 new_skb =
890 skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
891 if (unlikely(!new_skb)) {
892 mwifiex_dbg(priv->adapter, ERROR,
893 "Tx: cannot alloca new_skb\n");
894 kfree_skb(skb);
895 priv->stats.tx_dropped++;
896 return 0;
897 }
898 kfree_skb(skb);
899 skb = new_skb;
900 mwifiex_dbg(priv->adapter, INFO,
901 "info: new skb headroomd %d\n",
902 skb_headroom(skb));
903 }
904
905 tx_info = MWIFIEX_SKB_TXCB(skb);
906 memset(tx_info, 0, sizeof(*tx_info));
907 tx_info->bss_num = priv->bss_num;
908 tx_info->bss_type = priv->bss_type;
909 tx_info->pkt_len = skb->len;
910
911 multicast = is_multicast_ether_addr(skb->data);
912
913 if (unlikely(!multicast && skb->sk &&
914 skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS &&
915 priv->adapter->fw_api_ver == MWIFIEX_FW_V15))
916 skb = mwifiex_clone_skb_for_tx_status(priv,
917 skb,
918 MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS, NULL);
919
920 /* Record the current time the packet was queued; used to
921 * determine the amount of time the packet was queued in
922 * the driver before it was sent to the firmware.
923 * The delay is then sent along with the packet to the
924 * firmware for aggregate delay calculation for stats and
925 * MSDU lifetime expiry.
926 */
927 __net_timestamp(skb);
928
929 if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
930 priv->bss_type == MWIFIEX_BSS_TYPE_STA &&
931 !ether_addr_equal_unaligned(priv->cfg_bssid, skb->data)) {
932 if (priv->adapter->auto_tdls && priv->check_tdls_tx)
933 mwifiex_tdls_check_tx(priv, skb);
934 }
935
936 mwifiex_queue_tx_pkt(priv, skb);
937
938 return 0;
939 }
940
mwifiex_set_mac_address(struct mwifiex_private * priv,struct net_device * dev,bool external,u8 * new_mac)941 int mwifiex_set_mac_address(struct mwifiex_private *priv,
942 struct net_device *dev, bool external,
943 u8 *new_mac)
944 {
945 int ret;
946 u64 mac_addr, old_mac_addr;
947
948 old_mac_addr = ether_addr_to_u64(priv->curr_addr);
949
950 if (external) {
951 mac_addr = ether_addr_to_u64(new_mac);
952 } else {
953 /* Internal mac address change */
954 if (priv->bss_type == MWIFIEX_BSS_TYPE_ANY)
955 return -ENOTSUPP;
956
957 mac_addr = old_mac_addr;
958
959 if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) {
960 mac_addr |= BIT_ULL(MWIFIEX_MAC_LOCAL_ADMIN_BIT);
961 mac_addr += priv->bss_num;
962 } else if (priv->adapter->priv[0] != priv) {
963 /* Set mac address based on bss_type/bss_num */
964 mac_addr ^= BIT_ULL(priv->bss_type + 8);
965 mac_addr += priv->bss_num;
966 }
967 }
968
969 u64_to_ether_addr(mac_addr, priv->curr_addr);
970
971 /* Send request to firmware */
972 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
973 HostCmd_ACT_GEN_SET, 0, NULL, true);
974
975 if (ret) {
976 u64_to_ether_addr(old_mac_addr, priv->curr_addr);
977 mwifiex_dbg(priv->adapter, ERROR,
978 "set mac address failed: ret=%d\n", ret);
979 return ret;
980 }
981
982 ether_addr_copy(dev->dev_addr, priv->curr_addr);
983 return 0;
984 }
985
986 /* CFG802.11 network device handler for setting MAC address.
987 */
988 static int
mwifiex_ndo_set_mac_address(struct net_device * dev,void * addr)989 mwifiex_ndo_set_mac_address(struct net_device *dev, void *addr)
990 {
991 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
992 struct sockaddr *hw_addr = addr;
993
994 return mwifiex_set_mac_address(priv, dev, true, hw_addr->sa_data);
995 }
996
997 /*
998 * CFG802.11 network device handler for setting multicast list.
999 */
mwifiex_set_multicast_list(struct net_device * dev)1000 static void mwifiex_set_multicast_list(struct net_device *dev)
1001 {
1002 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1003 struct mwifiex_multicast_list mcast_list;
1004
1005 if (dev->flags & IFF_PROMISC) {
1006 mcast_list.mode = MWIFIEX_PROMISC_MODE;
1007 } else if (dev->flags & IFF_ALLMULTI ||
1008 netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) {
1009 mcast_list.mode = MWIFIEX_ALL_MULTI_MODE;
1010 } else {
1011 mcast_list.mode = MWIFIEX_MULTICAST_MODE;
1012 mcast_list.num_multicast_addr =
1013 mwifiex_copy_mcast_addr(&mcast_list, dev);
1014 }
1015 mwifiex_request_set_multicast_list(priv, &mcast_list);
1016 }
1017
1018 /*
1019 * CFG802.11 network device handler for transmission timeout.
1020 */
1021 static void
mwifiex_tx_timeout(struct net_device * dev)1022 mwifiex_tx_timeout(struct net_device *dev)
1023 {
1024 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1025
1026 priv->num_tx_timeout++;
1027 priv->tx_timeout_cnt++;
1028 mwifiex_dbg(priv->adapter, ERROR,
1029 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
1030 jiffies, priv->tx_timeout_cnt, priv->bss_type,
1031 priv->bss_num);
1032 mwifiex_set_trans_start(dev);
1033
1034 if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&
1035 priv->adapter->if_ops.card_reset) {
1036 mwifiex_dbg(priv->adapter, ERROR,
1037 "tx_timeout_cnt exceeds threshold.\t"
1038 "Triggering card reset!\n");
1039 priv->adapter->if_ops.card_reset(priv->adapter);
1040 }
1041 }
1042
mwifiex_multi_chan_resync(struct mwifiex_adapter * adapter)1043 void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter)
1044 {
1045 struct usb_card_rec *card = adapter->card;
1046 struct mwifiex_private *priv;
1047 u16 tx_buf_size;
1048 int i, ret;
1049
1050 card->mc_resync_flag = true;
1051 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
1052 if (atomic_read(&card->port[i].tx_data_urb_pending)) {
1053 mwifiex_dbg(adapter, WARN, "pending data urb in sys\n");
1054 return;
1055 }
1056 }
1057
1058 card->mc_resync_flag = false;
1059 tx_buf_size = 0xffff;
1060 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1061 ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF,
1062 HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false);
1063 if (ret)
1064 mwifiex_dbg(adapter, ERROR,
1065 "send reconfig tx buf size cmd err\n");
1066 }
1067 EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync);
1068
mwifiex_upload_device_dump(struct mwifiex_adapter * adapter)1069 void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter)
1070 {
1071 /* Dump all the memory data into single file, a userspace script will
1072 * be used to split all the memory data to multiple files
1073 */
1074 mwifiex_dbg(adapter, MSG,
1075 "== mwifiex dump information to /sys/class/devcoredump start\n");
1076 dev_coredumpv(adapter->dev, adapter->devdump_data, adapter->devdump_len,
1077 GFP_KERNEL);
1078 mwifiex_dbg(adapter, MSG,
1079 "== mwifiex dump information to /sys/class/devcoredump end\n");
1080
1081 /* Device dump data will be freed in device coredump release function
1082 * after 5 min. Here reset adapter->devdump_data and ->devdump_len
1083 * to avoid it been accidentally reused.
1084 */
1085 adapter->devdump_data = NULL;
1086 adapter->devdump_len = 0;
1087 }
1088 EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump);
1089
mwifiex_drv_info_dump(struct mwifiex_adapter * adapter)1090 void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter)
1091 {
1092 char *p;
1093 char drv_version[64];
1094 struct usb_card_rec *cardp;
1095 struct sdio_mmc_card *sdio_card;
1096 struct mwifiex_private *priv;
1097 int i, idx;
1098 struct netdev_queue *txq;
1099 struct mwifiex_debug_info *debug_info;
1100
1101 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n");
1102
1103 p = adapter->devdump_data;
1104 strcpy(p, "========Start dump driverinfo========\n");
1105 p += strlen("========Start dump driverinfo========\n");
1106 p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
1107
1108 mwifiex_drv_get_driver_version(adapter, drv_version,
1109 sizeof(drv_version) - 1);
1110 p += sprintf(p, "driver_version = %s\n", drv_version);
1111
1112 if (adapter->iface_type == MWIFIEX_USB) {
1113 cardp = (struct usb_card_rec *)adapter->card;
1114 p += sprintf(p, "tx_cmd_urb_pending = %d\n",
1115 atomic_read(&cardp->tx_cmd_urb_pending));
1116 p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n",
1117 atomic_read(&cardp->port[0].tx_data_urb_pending));
1118 p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n",
1119 atomic_read(&cardp->port[1].tx_data_urb_pending));
1120 p += sprintf(p, "rx_cmd_urb_pending = %d\n",
1121 atomic_read(&cardp->rx_cmd_urb_pending));
1122 p += sprintf(p, "rx_data_urb_pending = %d\n",
1123 atomic_read(&cardp->rx_data_urb_pending));
1124 }
1125
1126 p += sprintf(p, "tx_pending = %d\n",
1127 atomic_read(&adapter->tx_pending));
1128 p += sprintf(p, "rx_pending = %d\n",
1129 atomic_read(&adapter->rx_pending));
1130
1131 if (adapter->iface_type == MWIFIEX_SDIO) {
1132 sdio_card = (struct sdio_mmc_card *)adapter->card;
1133 p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
1134 sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port);
1135 p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
1136 sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port);
1137 }
1138
1139 for (i = 0; i < adapter->priv_num; i++) {
1140 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1141 continue;
1142 priv = adapter->priv[i];
1143 p += sprintf(p, "\n[interface : \"%s\"]\n",
1144 priv->netdev->name);
1145 p += sprintf(p, "wmm_tx_pending[0] = %d\n",
1146 atomic_read(&priv->wmm_tx_pending[0]));
1147 p += sprintf(p, "wmm_tx_pending[1] = %d\n",
1148 atomic_read(&priv->wmm_tx_pending[1]));
1149 p += sprintf(p, "wmm_tx_pending[2] = %d\n",
1150 atomic_read(&priv->wmm_tx_pending[2]));
1151 p += sprintf(p, "wmm_tx_pending[3] = %d\n",
1152 atomic_read(&priv->wmm_tx_pending[3]));
1153 p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ?
1154 "Disconnected" : "Connected");
1155 p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev)
1156 ? "on" : "off"));
1157 for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) {
1158 txq = netdev_get_tx_queue(priv->netdev, idx);
1159 p += sprintf(p, "tx queue %d:%s ", idx,
1160 netif_tx_queue_stopped(txq) ?
1161 "stopped" : "started");
1162 }
1163 p += sprintf(p, "\n%s: num_tx_timeout = %d\n",
1164 priv->netdev->name, priv->num_tx_timeout);
1165 }
1166
1167 if (adapter->iface_type == MWIFIEX_SDIO ||
1168 adapter->iface_type == MWIFIEX_PCIE) {
1169 p += sprintf(p, "\n=== %s register dump===\n",
1170 adapter->iface_type == MWIFIEX_SDIO ?
1171 "SDIO" : "PCIE");
1172 if (adapter->if_ops.reg_dump)
1173 p += adapter->if_ops.reg_dump(adapter, p);
1174 }
1175 p += sprintf(p, "\n=== more debug information\n");
1176 debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);
1177 if (debug_info) {
1178 for (i = 0; i < adapter->priv_num; i++) {
1179 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1180 continue;
1181 priv = adapter->priv[i];
1182 mwifiex_get_debug_info(priv, debug_info);
1183 p += mwifiex_debug_info_to_buffer(priv, p, debug_info);
1184 break;
1185 }
1186 kfree(debug_info);
1187 }
1188
1189 strcpy(p, "\n========End dump========\n");
1190 p += strlen("\n========End dump========\n");
1191 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n");
1192 adapter->devdump_len = p - (char *)adapter->devdump_data;
1193 }
1194 EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump);
1195
mwifiex_prepare_fw_dump_info(struct mwifiex_adapter * adapter)1196 void mwifiex_prepare_fw_dump_info(struct mwifiex_adapter *adapter)
1197 {
1198 u8 idx;
1199 char *fw_dump_ptr;
1200 u32 dump_len = 0;
1201
1202 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1203 struct memory_type_mapping *entry =
1204 &adapter->mem_type_mapping_tbl[idx];
1205
1206 if (entry->mem_ptr) {
1207 dump_len += (strlen("========Start dump ") +
1208 strlen(entry->mem_name) +
1209 strlen("========\n") +
1210 (entry->mem_size + 1) +
1211 strlen("\n========End dump========\n"));
1212 }
1213 }
1214
1215 if (dump_len + 1 + adapter->devdump_len > MWIFIEX_FW_DUMP_SIZE) {
1216 /* Realloc in case buffer overflow */
1217 fw_dump_ptr = vzalloc(dump_len + 1 + adapter->devdump_len);
1218 mwifiex_dbg(adapter, MSG, "Realloc device dump data.\n");
1219 if (!fw_dump_ptr) {
1220 vfree(adapter->devdump_data);
1221 mwifiex_dbg(adapter, ERROR,
1222 "vzalloc devdump data failure!\n");
1223 return;
1224 }
1225
1226 memmove(fw_dump_ptr, adapter->devdump_data,
1227 adapter->devdump_len);
1228 vfree(adapter->devdump_data);
1229 adapter->devdump_data = fw_dump_ptr;
1230 }
1231
1232 fw_dump_ptr = (char *)adapter->devdump_data + adapter->devdump_len;
1233
1234 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1235 struct memory_type_mapping *entry =
1236 &adapter->mem_type_mapping_tbl[idx];
1237
1238 if (entry->mem_ptr) {
1239 strcpy(fw_dump_ptr, "========Start dump ");
1240 fw_dump_ptr += strlen("========Start dump ");
1241
1242 strcpy(fw_dump_ptr, entry->mem_name);
1243 fw_dump_ptr += strlen(entry->mem_name);
1244
1245 strcpy(fw_dump_ptr, "========\n");
1246 fw_dump_ptr += strlen("========\n");
1247
1248 memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1249 fw_dump_ptr += entry->mem_size;
1250
1251 strcpy(fw_dump_ptr, "\n========End dump========\n");
1252 fw_dump_ptr += strlen("\n========End dump========\n");
1253 }
1254 }
1255
1256 adapter->devdump_len = fw_dump_ptr - (char *)adapter->devdump_data;
1257
1258 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1259 struct memory_type_mapping *entry =
1260 &adapter->mem_type_mapping_tbl[idx];
1261
1262 vfree(entry->mem_ptr);
1263 entry->mem_ptr = NULL;
1264 entry->mem_size = 0;
1265 }
1266 }
1267 EXPORT_SYMBOL_GPL(mwifiex_prepare_fw_dump_info);
1268
1269 /*
1270 * CFG802.11 network device handler for statistics retrieval.
1271 */
mwifiex_get_stats(struct net_device * dev)1272 static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
1273 {
1274 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1275
1276 return &priv->stats;
1277 }
1278
1279 static u16
mwifiex_netdev_select_wmm_queue(struct net_device * dev,struct sk_buff * skb,struct net_device * sb_dev)1280 mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb,
1281 struct net_device *sb_dev)
1282 {
1283 skb->priority = cfg80211_classify8021d(skb, NULL);
1284 return mwifiex_1d_to_wmm_queue[skb->priority];
1285 }
1286
1287 /* Network device handlers */
1288 static const struct net_device_ops mwifiex_netdev_ops = {
1289 .ndo_open = mwifiex_open,
1290 .ndo_stop = mwifiex_close,
1291 .ndo_start_xmit = mwifiex_hard_start_xmit,
1292 .ndo_set_mac_address = mwifiex_ndo_set_mac_address,
1293 .ndo_validate_addr = eth_validate_addr,
1294 .ndo_tx_timeout = mwifiex_tx_timeout,
1295 .ndo_get_stats = mwifiex_get_stats,
1296 .ndo_set_rx_mode = mwifiex_set_multicast_list,
1297 .ndo_select_queue = mwifiex_netdev_select_wmm_queue,
1298 };
1299
1300 /*
1301 * This function initializes the private structure parameters.
1302 *
1303 * The following wait queues are initialized -
1304 * - IOCTL wait queue
1305 * - Command wait queue
1306 * - Statistics wait queue
1307 *
1308 * ...and the following default parameters are set -
1309 * - Current key index : Set to 0
1310 * - Rate index : Set to auto
1311 * - Media connected : Set to disconnected
1312 * - Adhoc link sensed : Set to false
1313 * - Nick name : Set to null
1314 * - Number of Tx timeout : Set to 0
1315 * - Device address : Set to current address
1316 * - Rx histogram statistc : Set to 0
1317 *
1318 * In addition, the CFG80211 work queue is also created.
1319 */
mwifiex_init_priv_params(struct mwifiex_private * priv,struct net_device * dev)1320 void mwifiex_init_priv_params(struct mwifiex_private *priv,
1321 struct net_device *dev)
1322 {
1323 dev->netdev_ops = &mwifiex_netdev_ops;
1324 dev->needs_free_netdev = true;
1325 /* Initialize private structure */
1326 priv->current_key_index = 0;
1327 priv->media_connected = false;
1328 memset(priv->mgmt_ie, 0,
1329 sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX);
1330 priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK;
1331 priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK;
1332 priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK;
1333 priv->gen_idx = MWIFIEX_AUTO_IDX_MASK;
1334 priv->num_tx_timeout = 0;
1335 if (is_valid_ether_addr(dev->dev_addr))
1336 ether_addr_copy(priv->curr_addr, dev->dev_addr);
1337 else
1338 ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr);
1339
1340 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
1341 GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
1342 priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL);
1343 if (priv->hist_data)
1344 mwifiex_hist_data_reset(priv);
1345 }
1346 }
1347
1348 /*
1349 * This function check if command is pending.
1350 */
is_command_pending(struct mwifiex_adapter * adapter)1351 int is_command_pending(struct mwifiex_adapter *adapter)
1352 {
1353 int is_cmd_pend_q_empty;
1354
1355 spin_lock_bh(&adapter->cmd_pending_q_lock);
1356 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
1357 spin_unlock_bh(&adapter->cmd_pending_q_lock);
1358
1359 return !is_cmd_pend_q_empty;
1360 }
1361
1362 /*
1363 * This is the RX work queue function.
1364 *
1365 * It handles the RX operations.
1366 */
mwifiex_rx_work_queue(struct work_struct * work)1367 static void mwifiex_rx_work_queue(struct work_struct *work)
1368 {
1369 struct mwifiex_adapter *adapter =
1370 container_of(work, struct mwifiex_adapter, rx_work);
1371
1372 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1373 return;
1374 mwifiex_process_rx(adapter);
1375 }
1376
1377 /*
1378 * This is the main work queue function.
1379 *
1380 * It handles the main process, which in turn handles the complete
1381 * driver operations.
1382 */
mwifiex_main_work_queue(struct work_struct * work)1383 static void mwifiex_main_work_queue(struct work_struct *work)
1384 {
1385 struct mwifiex_adapter *adapter =
1386 container_of(work, struct mwifiex_adapter, main_work);
1387
1388 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1389 return;
1390 mwifiex_main_process(adapter);
1391 }
1392
1393 /* Common teardown code used for both device removal and reset */
mwifiex_uninit_sw(struct mwifiex_adapter * adapter)1394 static void mwifiex_uninit_sw(struct mwifiex_adapter *adapter)
1395 {
1396 struct mwifiex_private *priv;
1397 int i;
1398
1399 /* We can no longer handle interrupts once we start doing the teardown
1400 * below.
1401 */
1402 if (adapter->if_ops.disable_int)
1403 adapter->if_ops.disable_int(adapter);
1404
1405 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1406 mwifiex_terminate_workqueue(adapter);
1407 adapter->int_status = 0;
1408
1409 /* Stop data */
1410 for (i = 0; i < adapter->priv_num; i++) {
1411 priv = adapter->priv[i];
1412 if (priv && priv->netdev) {
1413 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
1414 if (netif_carrier_ok(priv->netdev))
1415 netif_carrier_off(priv->netdev);
1416 netif_device_detach(priv->netdev);
1417 }
1418 }
1419
1420 mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n");
1421 mwifiex_shutdown_drv(adapter);
1422 mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n");
1423
1424 if (atomic_read(&adapter->rx_pending) ||
1425 atomic_read(&adapter->tx_pending) ||
1426 atomic_read(&adapter->cmd_pending)) {
1427 mwifiex_dbg(adapter, ERROR,
1428 "rx_pending=%d, tx_pending=%d,\t"
1429 "cmd_pending=%d\n",
1430 atomic_read(&adapter->rx_pending),
1431 atomic_read(&adapter->tx_pending),
1432 atomic_read(&adapter->cmd_pending));
1433 }
1434
1435 for (i = 0; i < adapter->priv_num; i++) {
1436 priv = adapter->priv[i];
1437 if (!priv)
1438 continue;
1439 rtnl_lock();
1440 if (priv->netdev &&
1441 priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED)
1442 mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
1443 rtnl_unlock();
1444 }
1445
1446 wiphy_unregister(adapter->wiphy);
1447 wiphy_free(adapter->wiphy);
1448 adapter->wiphy = NULL;
1449
1450 vfree(adapter->chan_stats);
1451 mwifiex_free_cmd_buffers(adapter);
1452 }
1453
1454 /*
1455 * This function gets called during PCIe function level reset.
1456 */
mwifiex_shutdown_sw(struct mwifiex_adapter * adapter)1457 int mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
1458 {
1459 struct mwifiex_private *priv;
1460
1461 if (!adapter)
1462 return 0;
1463
1464 wait_for_completion(adapter->fw_done);
1465 /* Caller should ensure we aren't suspending while this happens */
1466 reinit_completion(adapter->fw_done);
1467
1468 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1469 mwifiex_deauthenticate(priv, NULL);
1470
1471 mwifiex_uninit_sw(adapter);
1472
1473 if (adapter->if_ops.down_dev)
1474 adapter->if_ops.down_dev(adapter);
1475
1476 return 0;
1477 }
1478 EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw);
1479
1480 /* This function gets called during PCIe function level reset. Required
1481 * code is extracted from mwifiex_add_card()
1482 */
1483 int
mwifiex_reinit_sw(struct mwifiex_adapter * adapter)1484 mwifiex_reinit_sw(struct mwifiex_adapter *adapter)
1485 {
1486 int ret;
1487
1488 mwifiex_init_lock_list(adapter);
1489 if (adapter->if_ops.up_dev)
1490 adapter->if_ops.up_dev(adapter);
1491
1492 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1493 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1494 init_waitqueue_head(&adapter->init_wait_q);
1495 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
1496 adapter->hs_activated = false;
1497 clear_bit(MWIFIEX_IS_CMD_TIMEDOUT, &adapter->work_flags);
1498 init_waitqueue_head(&adapter->hs_activate_wait_q);
1499 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1500 adapter->cmd_wait_q.status = 0;
1501 adapter->scan_wait_q_woken = false;
1502
1503 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1504 adapter->rx_work_enabled = true;
1505
1506 adapter->workqueue =
1507 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1508 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1509 if (!adapter->workqueue)
1510 goto err_kmalloc;
1511
1512 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1513
1514 if (adapter->rx_work_enabled) {
1515 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1516 WQ_HIGHPRI |
1517 WQ_MEM_RECLAIM |
1518 WQ_UNBOUND, 1);
1519 if (!adapter->rx_workqueue)
1520 goto err_kmalloc;
1521 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1522 }
1523
1524 /* Register the device. Fill up the private data structure with
1525 * relevant information from the card. Some code extracted from
1526 * mwifiex_register_dev()
1527 */
1528 mwifiex_dbg(adapter, INFO, "%s, mwifiex_init_hw_fw()...\n", __func__);
1529
1530 if (mwifiex_init_hw_fw(adapter, false)) {
1531 mwifiex_dbg(adapter, ERROR,
1532 "%s: firmware init failed\n", __func__);
1533 goto err_init_fw;
1534 }
1535
1536 /* _mwifiex_fw_dpc() does its own cleanup */
1537 ret = _mwifiex_fw_dpc(adapter->firmware, adapter);
1538 if (ret) {
1539 pr_err("Failed to bring up adapter: %d\n", ret);
1540 return ret;
1541 }
1542 mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
1543
1544 return 0;
1545
1546 err_init_fw:
1547 mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__);
1548 if (adapter->if_ops.unregister_dev)
1549 adapter->if_ops.unregister_dev(adapter);
1550
1551 err_kmalloc:
1552 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1553 mwifiex_terminate_workqueue(adapter);
1554 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1555 mwifiex_dbg(adapter, ERROR,
1556 "info: %s: shutdown mwifiex\n", __func__);
1557 mwifiex_shutdown_drv(adapter);
1558 mwifiex_free_cmd_buffers(adapter);
1559 }
1560
1561 complete_all(adapter->fw_done);
1562 mwifiex_dbg(adapter, INFO, "%s, error\n", __func__);
1563
1564 return -1;
1565 }
1566 EXPORT_SYMBOL_GPL(mwifiex_reinit_sw);
1567
mwifiex_irq_wakeup_handler(int irq,void * priv)1568 static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv)
1569 {
1570 struct mwifiex_adapter *adapter = priv;
1571
1572 dev_dbg(adapter->dev, "%s: wake by wifi", __func__);
1573 adapter->wake_by_wifi = true;
1574 disable_irq_nosync(irq);
1575
1576 /* Notify PM core we are wakeup source */
1577 pm_wakeup_event(adapter->dev, 0);
1578 pm_system_wakeup();
1579
1580 return IRQ_HANDLED;
1581 }
1582
mwifiex_probe_of(struct mwifiex_adapter * adapter)1583 static void mwifiex_probe_of(struct mwifiex_adapter *adapter)
1584 {
1585 int ret;
1586 struct device *dev = adapter->dev;
1587
1588 if (!dev->of_node)
1589 goto err_exit;
1590
1591 adapter->dt_node = dev->of_node;
1592 adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0);
1593 if (!adapter->irq_wakeup) {
1594 dev_dbg(dev, "fail to parse irq_wakeup from device tree\n");
1595 goto err_exit;
1596 }
1597
1598 ret = devm_request_irq(dev, adapter->irq_wakeup,
1599 mwifiex_irq_wakeup_handler, IRQF_TRIGGER_LOW,
1600 "wifi_wake", adapter);
1601 if (ret) {
1602 dev_err(dev, "Failed to request irq_wakeup %d (%d)\n",
1603 adapter->irq_wakeup, ret);
1604 goto err_exit;
1605 }
1606
1607 disable_irq(adapter->irq_wakeup);
1608 if (device_init_wakeup(dev, true)) {
1609 dev_err(dev, "fail to init wakeup for mwifiex\n");
1610 goto err_exit;
1611 }
1612 return;
1613
1614 err_exit:
1615 adapter->irq_wakeup = -1;
1616 }
1617
1618 /*
1619 * This function adds the card.
1620 *
1621 * This function follows the following major steps to set up the device -
1622 * - Initialize software. This includes probing the card, registering
1623 * the interface operations table, and allocating/initializing the
1624 * adapter structure
1625 * - Set up the netlink socket
1626 * - Create and start the main work queue
1627 * - Register the device
1628 * - Initialize firmware and hardware
1629 * - Add logical interfaces
1630 */
1631 int
mwifiex_add_card(void * card,struct completion * fw_done,struct mwifiex_if_ops * if_ops,u8 iface_type,struct device * dev)1632 mwifiex_add_card(void *card, struct completion *fw_done,
1633 struct mwifiex_if_ops *if_ops, u8 iface_type,
1634 struct device *dev)
1635 {
1636 struct mwifiex_adapter *adapter;
1637
1638 if (mwifiex_register(card, dev, if_ops, (void **)&adapter)) {
1639 pr_err("%s: software init failed\n", __func__);
1640 goto err_init_sw;
1641 }
1642
1643 mwifiex_probe_of(adapter);
1644
1645 adapter->iface_type = iface_type;
1646 adapter->fw_done = fw_done;
1647
1648 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1649 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1650 init_waitqueue_head(&adapter->init_wait_q);
1651 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
1652 adapter->hs_activated = false;
1653 init_waitqueue_head(&adapter->hs_activate_wait_q);
1654 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1655 adapter->cmd_wait_q.status = 0;
1656 adapter->scan_wait_q_woken = false;
1657
1658 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1659 adapter->rx_work_enabled = true;
1660
1661 adapter->workqueue =
1662 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1663 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1664 if (!adapter->workqueue)
1665 goto err_kmalloc;
1666
1667 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1668
1669 if (adapter->rx_work_enabled) {
1670 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1671 WQ_HIGHPRI |
1672 WQ_MEM_RECLAIM |
1673 WQ_UNBOUND, 1);
1674 if (!adapter->rx_workqueue)
1675 goto err_kmalloc;
1676
1677 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1678 }
1679
1680 /* Register the device. Fill up the private data structure with relevant
1681 information from the card. */
1682 if (adapter->if_ops.register_dev(adapter)) {
1683 pr_err("%s: failed to register mwifiex device\n", __func__);
1684 goto err_registerdev;
1685 }
1686
1687 if (mwifiex_init_hw_fw(adapter, true)) {
1688 pr_err("%s: firmware init failed\n", __func__);
1689 goto err_init_fw;
1690 }
1691
1692 return 0;
1693
1694 err_init_fw:
1695 pr_debug("info: %s: unregister device\n", __func__);
1696 if (adapter->if_ops.unregister_dev)
1697 adapter->if_ops.unregister_dev(adapter);
1698 err_registerdev:
1699 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1700 mwifiex_terminate_workqueue(adapter);
1701 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1702 pr_debug("info: %s: shutdown mwifiex\n", __func__);
1703 mwifiex_shutdown_drv(adapter);
1704 mwifiex_free_cmd_buffers(adapter);
1705 }
1706 err_kmalloc:
1707 if (adapter->irq_wakeup >= 0)
1708 device_init_wakeup(adapter->dev, false);
1709 mwifiex_free_adapter(adapter);
1710
1711 err_init_sw:
1712
1713 return -1;
1714 }
1715 EXPORT_SYMBOL_GPL(mwifiex_add_card);
1716
1717 /*
1718 * This function removes the card.
1719 *
1720 * This function follows the following major steps to remove the device -
1721 * - Stop data traffic
1722 * - Shutdown firmware
1723 * - Remove the logical interfaces
1724 * - Terminate the work queue
1725 * - Unregister the device
1726 * - Free the adapter structure
1727 */
mwifiex_remove_card(struct mwifiex_adapter * adapter)1728 int mwifiex_remove_card(struct mwifiex_adapter *adapter)
1729 {
1730 if (!adapter)
1731 return 0;
1732
1733 mwifiex_uninit_sw(adapter);
1734
1735 if (adapter->irq_wakeup >= 0)
1736 device_init_wakeup(adapter->dev, false);
1737
1738 /* Unregister device */
1739 mwifiex_dbg(adapter, INFO,
1740 "info: unregister device\n");
1741 if (adapter->if_ops.unregister_dev)
1742 adapter->if_ops.unregister_dev(adapter);
1743 /* Free adapter structure */
1744 mwifiex_dbg(adapter, INFO,
1745 "info: free adapter\n");
1746 mwifiex_free_adapter(adapter);
1747
1748 return 0;
1749 }
1750 EXPORT_SYMBOL_GPL(mwifiex_remove_card);
1751
_mwifiex_dbg(const struct mwifiex_adapter * adapter,int mask,const char * fmt,...)1752 void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
1753 const char *fmt, ...)
1754 {
1755 struct va_format vaf;
1756 va_list args;
1757
1758 if (!(adapter->debug_mask & mask))
1759 return;
1760
1761 va_start(args, fmt);
1762
1763 vaf.fmt = fmt;
1764 vaf.va = &args;
1765
1766 if (adapter->dev)
1767 dev_info(adapter->dev, "%pV", &vaf);
1768 else
1769 pr_info("%pV", &vaf);
1770
1771 va_end(args);
1772 }
1773 EXPORT_SYMBOL_GPL(_mwifiex_dbg);
1774
1775 /*
1776 * This function initializes the module.
1777 *
1778 * The debug FS is also initialized if configured.
1779 */
1780 static int
mwifiex_init_module(void)1781 mwifiex_init_module(void)
1782 {
1783 #ifdef CONFIG_DEBUG_FS
1784 mwifiex_debugfs_init();
1785 #endif
1786 return 0;
1787 }
1788
1789 /*
1790 * This function cleans up the module.
1791 *
1792 * The debug FS is removed if available.
1793 */
1794 static void
mwifiex_cleanup_module(void)1795 mwifiex_cleanup_module(void)
1796 {
1797 #ifdef CONFIG_DEBUG_FS
1798 mwifiex_debugfs_remove();
1799 #endif
1800 }
1801
1802 module_init(mwifiex_init_module);
1803 module_exit(mwifiex_cleanup_module);
1804
1805 MODULE_AUTHOR("Marvell International Ltd.");
1806 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION);
1807 MODULE_VERSION(VERSION);
1808 MODULE_LICENSE("GPL v2");
1809
