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 #include <net/sock.h>
10
11 #include "main.h"
12 #include "wmm.h"
13 #include "cfg80211.h"
14 #include "11n.h"
15
16 #define VERSION "1.0"
17 #define MFG_FIRMWARE "mwifiex_mfg.bin"
18
19 static unsigned int debug_mask = MWIFIEX_DEFAULT_DEBUG_MASK;
20 module_param(debug_mask, uint, 0);
21 MODULE_PARM_DESC(debug_mask, "bitmap for debug flags");
22
23 const char driver_version[] = "mwifiex " VERSION " (%s) ";
24 static char *cal_data_cfg;
25 module_param(cal_data_cfg, charp, 0);
26
27 static unsigned short driver_mode;
28 module_param(driver_mode, ushort, 0);
29 MODULE_PARM_DESC(driver_mode,
30 "station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7");
31
32 bool mfg_mode;
33 module_param(mfg_mode, bool, 0);
34 MODULE_PARM_DESC(mfg_mode, "manufacturing mode enable:1, disable:0");
35
36 bool aggr_ctrl;
37 module_param(aggr_ctrl, bool, 0000);
38 MODULE_PARM_DESC(aggr_ctrl, "usb tx aggregation enable:1, disable:0");
39
40 const u16 mwifiex_1d_to_wmm_queue[8] = { 1, 0, 0, 1, 2, 2, 3, 3 };
41
42 /*
43 * This function registers the device and performs all the necessary
44 * initializations.
45 *
46 * The following initialization operations are performed -
47 * - Allocate adapter structure
48 * - Save interface specific operations table in adapter
49 * - Call interface specific initialization routine
50 * - Allocate private structures
51 * - Set default adapter structure parameters
52 * - Initialize locks
53 *
54 * In case of any errors during inittialization, this function also ensures
55 * proper cleanup before exiting.
56 */
mwifiex_register(void * card,struct device * dev,const struct mwifiex_if_ops * if_ops,void ** padapter)57 static int mwifiex_register(void *card, struct device *dev,
58 const struct mwifiex_if_ops *if_ops, void **padapter)
59 {
60 struct mwifiex_adapter *adapter;
61 int i;
62
63 adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL);
64 if (!adapter)
65 return -ENOMEM;
66
67 *padapter = adapter;
68 adapter->dev = dev;
69 adapter->card = card;
70
71 /* Save interface specific operations in adapter */
72 memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));
73 adapter->debug_mask = debug_mask;
74
75 /* card specific initialization has been deferred until now .. */
76 if (adapter->if_ops.init_if)
77 if (adapter->if_ops.init_if(adapter))
78 goto error;
79
80 adapter->priv_num = 0;
81
82 for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) {
83 /* Allocate memory for private structure */
84 adapter->priv[i] =
85 kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL);
86 if (!adapter->priv[i])
87 goto error;
88
89 adapter->priv[i]->adapter = adapter;
90 adapter->priv_num++;
91 }
92 mwifiex_init_lock_list(adapter);
93
94 timer_setup(&adapter->cmd_timer, mwifiex_cmd_timeout_func, 0);
95
96 return 0;
97
98 error:
99 mwifiex_dbg(adapter, ERROR,
100 "info: leave mwifiex_register with error\n");
101
102 for (i = 0; i < adapter->priv_num; i++)
103 kfree(adapter->priv[i]);
104
105 kfree(adapter);
106
107 return -1;
108 }
109
110 /*
111 * This function unregisters the device and performs all the necessary
112 * cleanups.
113 *
114 * The following cleanup operations are performed -
115 * - Free the timers
116 * - Free beacon buffers
117 * - Free private structures
118 * - Free adapter structure
119 */
mwifiex_unregister(struct mwifiex_adapter * adapter)120 static int mwifiex_unregister(struct mwifiex_adapter *adapter)
121 {
122 s32 i;
123
124 if (adapter->if_ops.cleanup_if)
125 adapter->if_ops.cleanup_if(adapter);
126
127 timer_shutdown_sync(&adapter->cmd_timer);
128
129 /* Free private structures */
130 for (i = 0; i < adapter->priv_num; i++) {
131 mwifiex_free_curr_bcn(adapter->priv[i]);
132 kfree(adapter->priv[i]);
133 }
134
135 if (adapter->nd_info) {
136 for (i = 0 ; i < adapter->nd_info->n_matches ; i++)
137 kfree(adapter->nd_info->matches[i]);
138 kfree(adapter->nd_info);
139 adapter->nd_info = NULL;
140 }
141
142 kfree(adapter->regd);
143
144 kfree(adapter);
145 return 0;
146 }
147
mwifiex_queue_main_work(struct mwifiex_adapter * adapter)148 void mwifiex_queue_main_work(struct mwifiex_adapter *adapter)
149 {
150 unsigned long flags;
151
152 spin_lock_irqsave(&adapter->main_proc_lock, flags);
153 if (adapter->mwifiex_processing) {
154 adapter->more_task_flag = true;
155 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
156 } else {
157 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
158 queue_work(adapter->workqueue, &adapter->main_work);
159 }
160 }
161 EXPORT_SYMBOL_GPL(mwifiex_queue_main_work);
162
mwifiex_queue_rx_work(struct mwifiex_adapter * adapter)163 static void mwifiex_queue_rx_work(struct mwifiex_adapter *adapter)
164 {
165 spin_lock_bh(&adapter->rx_proc_lock);
166 if (adapter->rx_processing) {
167 spin_unlock_bh(&adapter->rx_proc_lock);
168 } else {
169 spin_unlock_bh(&adapter->rx_proc_lock);
170 queue_work(adapter->rx_workqueue, &adapter->rx_work);
171 }
172 }
173
mwifiex_process_rx(struct mwifiex_adapter * adapter)174 static int mwifiex_process_rx(struct mwifiex_adapter *adapter)
175 {
176 struct sk_buff *skb;
177 struct mwifiex_rxinfo *rx_info;
178
179 spin_lock_bh(&adapter->rx_proc_lock);
180 if (adapter->rx_processing || adapter->rx_locked) {
181 spin_unlock_bh(&adapter->rx_proc_lock);
182 goto exit_rx_proc;
183 } else {
184 adapter->rx_processing = true;
185 spin_unlock_bh(&adapter->rx_proc_lock);
186 }
187
188 /* Check for Rx data */
189 while ((skb = skb_dequeue(&adapter->rx_data_q))) {
190 atomic_dec(&adapter->rx_pending);
191 if ((adapter->delay_main_work ||
192 adapter->iface_type == MWIFIEX_USB) &&
193 (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {
194 if (adapter->if_ops.submit_rem_rx_urbs)
195 adapter->if_ops.submit_rem_rx_urbs(adapter);
196 adapter->delay_main_work = false;
197 mwifiex_queue_main_work(adapter);
198 }
199 rx_info = MWIFIEX_SKB_RXCB(skb);
200 if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) {
201 if (adapter->if_ops.deaggr_pkt)
202 adapter->if_ops.deaggr_pkt(adapter, skb);
203 dev_kfree_skb_any(skb);
204 } else {
205 mwifiex_handle_rx_packet(adapter, skb);
206 }
207 }
208 spin_lock_bh(&adapter->rx_proc_lock);
209 adapter->rx_processing = false;
210 spin_unlock_bh(&adapter->rx_proc_lock);
211
212 exit_rx_proc:
213 return 0;
214 }
215
maybe_quirk_fw_disable_ds(struct mwifiex_adapter * adapter)216 static void maybe_quirk_fw_disable_ds(struct mwifiex_adapter *adapter)
217 {
218 struct mwifiex_private *priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA);
219 struct mwifiex_ver_ext ver_ext;
220
221 if (test_and_set_bit(MWIFIEX_IS_REQUESTING_FW_VEREXT, &adapter->work_flags))
222 return;
223
224 memset(&ver_ext, 0, sizeof(ver_ext));
225 ver_ext.version_str_sel = 1;
226 if (mwifiex_send_cmd(priv, HostCmd_CMD_VERSION_EXT,
227 HostCmd_ACT_GEN_GET, 0, &ver_ext, false)) {
228 mwifiex_dbg(priv->adapter, MSG,
229 "Checking hardware revision failed.\n");
230 }
231 }
232
233 /*
234 * The main process.
235 *
236 * This function is the main procedure of the driver and handles various driver
237 * operations. It runs in a loop and provides the core functionalities.
238 *
239 * The main responsibilities of this function are -
240 * - Ensure concurrency control
241 * - Handle pending interrupts and call interrupt handlers
242 * - Wake up the card if required
243 * - Handle command responses and call response handlers
244 * - Handle events and call event handlers
245 * - Execute pending commands
246 * - Transmit pending data packets
247 */
mwifiex_main_process(struct mwifiex_adapter * adapter)248 int mwifiex_main_process(struct mwifiex_adapter *adapter)
249 {
250 int ret = 0;
251 unsigned long flags;
252
253 spin_lock_irqsave(&adapter->main_proc_lock, flags);
254
255 /* Check if already processing */
256 if (adapter->mwifiex_processing || adapter->main_locked) {
257 adapter->more_task_flag = true;
258 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
259 return 0;
260 } else {
261 adapter->mwifiex_processing = true;
262 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
263 }
264 process_start:
265 do {
266 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
267 break;
268
269 /* For non-USB interfaces, If we process interrupts first, it
270 * would increase RX pending even further. Avoid this by
271 * checking if rx_pending has crossed high threshold and
272 * schedule rx work queue and then process interrupts.
273 * For USB interface, there are no interrupts. We already have
274 * HIGH_RX_PENDING check in usb.c
275 */
276 if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING &&
277 adapter->iface_type != MWIFIEX_USB) {
278 adapter->delay_main_work = true;
279 mwifiex_queue_rx_work(adapter);
280 break;
281 }
282
283 /* Handle pending interrupt if any */
284 if (adapter->int_status) {
285 if (adapter->hs_activated)
286 mwifiex_process_hs_config(adapter);
287 if (adapter->if_ops.process_int_status)
288 adapter->if_ops.process_int_status(adapter);
289 }
290
291 if (adapter->rx_work_enabled && adapter->data_received)
292 mwifiex_queue_rx_work(adapter);
293
294 /* Need to wake up the card ? */
295 if ((adapter->ps_state == PS_STATE_SLEEP) &&
296 (adapter->pm_wakeup_card_req &&
297 !adapter->pm_wakeup_fw_try) &&
298 (is_command_pending(adapter) ||
299 !skb_queue_empty(&adapter->tx_data_q) ||
300 !mwifiex_bypass_txlist_empty(adapter) ||
301 !mwifiex_wmm_lists_empty(adapter))) {
302 adapter->pm_wakeup_fw_try = true;
303 mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3));
304 adapter->if_ops.wakeup(adapter);
305 continue;
306 }
307
308 if (IS_CARD_RX_RCVD(adapter)) {
309 adapter->data_received = false;
310 adapter->pm_wakeup_fw_try = false;
311 timer_delete(&adapter->wakeup_timer);
312 if (adapter->ps_state == PS_STATE_SLEEP)
313 adapter->ps_state = PS_STATE_AWAKE;
314 } else {
315 /* We have tried to wakeup the card already */
316 if (adapter->pm_wakeup_fw_try)
317 break;
318 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
319 mwifiex_check_ps_cond(adapter);
320
321 if (adapter->ps_state != PS_STATE_AWAKE)
322 break;
323 if (adapter->tx_lock_flag) {
324 if (adapter->iface_type == MWIFIEX_USB) {
325 if (!adapter->usb_mc_setup)
326 break;
327 } else
328 break;
329 }
330
331 if ((!adapter->scan_chan_gap_enabled &&
332 adapter->scan_processing) || adapter->data_sent ||
333 mwifiex_is_tdls_chan_switching
334 (mwifiex_get_priv(adapter,
335 MWIFIEX_BSS_ROLE_STA)) ||
336 (mwifiex_wmm_lists_empty(adapter) &&
337 mwifiex_bypass_txlist_empty(adapter) &&
338 skb_queue_empty(&adapter->tx_data_q))) {
339 if (adapter->cmd_sent || adapter->curr_cmd ||
340 !mwifiex_is_send_cmd_allowed
341 (mwifiex_get_priv(adapter,
342 MWIFIEX_BSS_ROLE_STA)) ||
343 (!is_command_pending(adapter)))
344 break;
345 }
346 }
347
348 /* Check for event */
349 if (adapter->event_received) {
350 adapter->event_received = false;
351 mwifiex_process_event(adapter);
352 }
353
354 /* Check for Cmd Resp */
355 if (adapter->cmd_resp_received) {
356 adapter->cmd_resp_received = false;
357 mwifiex_process_cmdresp(adapter);
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 if (adapter->hs_activated_manually) {
403 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY),
404 MWIFIEX_ASYNC_CMD);
405 adapter->hs_activated_manually = false;
406 }
407
408 mwifiex_process_tx_queue(adapter);
409 if (adapter->hs_activated) {
410 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
411 &adapter->work_flags);
412 mwifiex_hs_activated_event(adapter, false);
413 }
414 }
415
416 if ((adapter->scan_chan_gap_enabled ||
417 !adapter->scan_processing) &&
418 !adapter->data_sent &&
419 !mwifiex_bypass_txlist_empty(adapter) &&
420 !mwifiex_is_tdls_chan_switching
421 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
422 if (adapter->hs_activated_manually) {
423 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY),
424 MWIFIEX_ASYNC_CMD);
425 adapter->hs_activated_manually = false;
426 }
427
428 mwifiex_process_bypass_tx(adapter);
429 if (adapter->hs_activated) {
430 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
431 &adapter->work_flags);
432 mwifiex_hs_activated_event(adapter, false);
433 }
434 }
435
436 if ((adapter->scan_chan_gap_enabled ||
437 !adapter->scan_processing) &&
438 !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) &&
439 !mwifiex_is_tdls_chan_switching
440 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
441 if (adapter->hs_activated_manually) {
442 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY),
443 MWIFIEX_ASYNC_CMD);
444 adapter->hs_activated_manually = false;
445 }
446
447 mwifiex_wmm_process_tx(adapter);
448 if (adapter->hs_activated) {
449 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
450 &adapter->work_flags);
451 mwifiex_hs_activated_event(adapter, false);
452 }
453 }
454
455 if (adapter->delay_null_pkt && !adapter->cmd_sent &&
456 !adapter->curr_cmd && !is_command_pending(adapter) &&
457 (mwifiex_wmm_lists_empty(adapter) &&
458 mwifiex_bypass_txlist_empty(adapter) &&
459 skb_queue_empty(&adapter->tx_data_q))) {
460 if (!mwifiex_send_null_packet
461 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
462 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
463 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) {
464 adapter->delay_null_pkt = false;
465 adapter->ps_state = PS_STATE_SLEEP;
466 }
467 break;
468 }
469 } while (true);
470
471 spin_lock_irqsave(&adapter->main_proc_lock, flags);
472 if (adapter->more_task_flag) {
473 adapter->more_task_flag = false;
474 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
475 goto process_start;
476 }
477 adapter->mwifiex_processing = false;
478 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
479
480 return ret;
481 }
482 EXPORT_SYMBOL_GPL(mwifiex_main_process);
483
484 /*
485 * This function frees the adapter structure.
486 *
487 * Additionally, this closes the netlink socket, frees the timers
488 * and private structures.
489 */
mwifiex_free_adapter(struct mwifiex_adapter * adapter)490 static void mwifiex_free_adapter(struct mwifiex_adapter *adapter)
491 {
492 if (!adapter) {
493 pr_err("%s: adapter is NULL\n", __func__);
494 return;
495 }
496
497 mwifiex_unregister(adapter);
498 pr_debug("info: %s: free adapter\n", __func__);
499 }
500
501 /*
502 * This function cancels all works in the queue and destroys
503 * the main workqueue.
504 */
mwifiex_terminate_workqueue(struct mwifiex_adapter * adapter)505 static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter)
506 {
507 if (adapter->workqueue) {
508 destroy_workqueue(adapter->workqueue);
509 adapter->workqueue = NULL;
510 }
511
512 if (adapter->rx_workqueue) {
513 destroy_workqueue(adapter->rx_workqueue);
514 adapter->rx_workqueue = NULL;
515 }
516
517 if (adapter->host_mlme_workqueue) {
518 destroy_workqueue(adapter->host_mlme_workqueue);
519 adapter->host_mlme_workqueue = NULL;
520 }
521 }
522
523 /*
524 * This function gets firmware and initializes it.
525 *
526 * The main initialization steps followed are -
527 * - Download the correct firmware to card
528 * - Issue the init commands to firmware
529 */
_mwifiex_fw_dpc(const struct firmware * firmware,void * context)530 static int _mwifiex_fw_dpc(const struct firmware *firmware, void *context)
531 {
532 int ret;
533 char fmt[64];
534 struct mwifiex_adapter *adapter = context;
535 struct mwifiex_fw_image fw;
536 bool init_failed = false;
537 struct wireless_dev *wdev;
538 struct completion *fw_done = adapter->fw_done;
539
540 if (!firmware) {
541 mwifiex_dbg(adapter, ERROR,
542 "Failed to get firmware %s\n", adapter->fw_name);
543 goto err_dnld_fw;
544 }
545
546 memset(&fw, 0, sizeof(struct mwifiex_fw_image));
547 adapter->firmware = firmware;
548 fw.fw_buf = (u8 *) adapter->firmware->data;
549 fw.fw_len = adapter->firmware->size;
550
551 if (adapter->if_ops.dnld_fw) {
552 ret = adapter->if_ops.dnld_fw(adapter, &fw);
553 } else {
554 ret = mwifiex_dnld_fw(adapter, &fw);
555 }
556
557 if (ret == -1)
558 goto err_dnld_fw;
559
560 mwifiex_dbg(adapter, MSG, "WLAN FW is active\n");
561
562 if (cal_data_cfg) {
563 if ((request_firmware(&adapter->cal_data, cal_data_cfg,
564 adapter->dev)) < 0)
565 mwifiex_dbg(adapter, ERROR,
566 "Cal data request_firmware() failed\n");
567 }
568
569 /* enable host interrupt after fw dnld is successful */
570 if (adapter->if_ops.enable_int) {
571 if (adapter->if_ops.enable_int(adapter))
572 goto err_dnld_fw;
573 }
574
575 ret = mwifiex_init_fw(adapter);
576 if (ret == -1)
577 goto err_init_fw;
578
579 maybe_quirk_fw_disable_ds(adapter);
580
581 if (!adapter->wiphy) {
582 if (mwifiex_register_cfg80211(adapter)) {
583 mwifiex_dbg(adapter, ERROR,
584 "cannot register with cfg80211\n");
585 goto err_init_fw;
586 }
587 }
588
589 if (mwifiex_init_channel_scan_gap(adapter)) {
590 mwifiex_dbg(adapter, ERROR,
591 "could not init channel stats table\n");
592 goto err_init_chan_scan;
593 }
594
595 if (driver_mode) {
596 driver_mode &= MWIFIEX_DRIVER_MODE_BITMASK;
597 driver_mode |= MWIFIEX_DRIVER_MODE_STA;
598 }
599
600 rtnl_lock();
601 wiphy_lock(adapter->wiphy);
602 /* Create station interface by default */
603 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM,
604 NL80211_IFTYPE_STATION, NULL);
605 if (IS_ERR(wdev)) {
606 mwifiex_dbg(adapter, ERROR,
607 "cannot create default STA interface\n");
608 wiphy_unlock(adapter->wiphy);
609 rtnl_unlock();
610 goto err_add_intf;
611 }
612
613 if (driver_mode & MWIFIEX_DRIVER_MODE_UAP) {
614 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM,
615 NL80211_IFTYPE_AP, NULL);
616 if (IS_ERR(wdev)) {
617 mwifiex_dbg(adapter, ERROR,
618 "cannot create AP interface\n");
619 wiphy_unlock(adapter->wiphy);
620 rtnl_unlock();
621 goto err_add_intf;
622 }
623 }
624
625 if (driver_mode & MWIFIEX_DRIVER_MODE_P2P) {
626 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", NET_NAME_ENUM,
627 NL80211_IFTYPE_P2P_CLIENT, NULL);
628 if (IS_ERR(wdev)) {
629 mwifiex_dbg(adapter, ERROR,
630 "cannot create p2p client interface\n");
631 wiphy_unlock(adapter->wiphy);
632 rtnl_unlock();
633 goto err_add_intf;
634 }
635 }
636 wiphy_unlock(adapter->wiphy);
637 rtnl_unlock();
638
639 mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);
640 mwifiex_dbg(adapter, MSG, "driver_version = %s\n", fmt);
641 adapter->is_up = true;
642 goto done;
643
644 err_add_intf:
645 vfree(adapter->chan_stats);
646 err_init_chan_scan:
647 wiphy_unregister(adapter->wiphy);
648 wiphy_free(adapter->wiphy);
649 err_init_fw:
650 if (adapter->if_ops.disable_int)
651 adapter->if_ops.disable_int(adapter);
652 err_dnld_fw:
653 mwifiex_dbg(adapter, ERROR,
654 "info: %s: unregister device\n", __func__);
655 if (adapter->if_ops.unregister_dev)
656 adapter->if_ops.unregister_dev(adapter);
657
658 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
659 mwifiex_terminate_workqueue(adapter);
660
661 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
662 pr_debug("info: %s: shutdown mwifiex\n", __func__);
663 mwifiex_shutdown_drv(adapter);
664 mwifiex_free_cmd_buffers(adapter);
665 }
666
667 init_failed = true;
668 done:
669 if (adapter->firmware) {
670 release_firmware(adapter->firmware);
671 adapter->firmware = NULL;
672 }
673 if (init_failed) {
674 if (adapter->irq_wakeup >= 0)
675 device_init_wakeup(adapter->dev, false);
676 mwifiex_free_adapter(adapter);
677 }
678 /* Tell all current and future waiters we're finished */
679 complete_all(fw_done);
680
681 return init_failed ? -EIO : 0;
682 }
683
mwifiex_fw_dpc(const struct firmware * firmware,void * context)684 static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
685 {
686 _mwifiex_fw_dpc(firmware, context);
687 }
688
689 /*
690 * This function gets the firmware and (if called asynchronously) kicks off the
691 * HW init when done.
692 */
mwifiex_init_hw_fw(struct mwifiex_adapter * adapter,bool req_fw_nowait)693 static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter,
694 bool req_fw_nowait)
695 {
696 int ret;
697
698 /* Override default firmware with manufacturing one if
699 * manufacturing mode is enabled
700 */
701 if (mfg_mode)
702 strscpy(adapter->fw_name, MFG_FIRMWARE,
703 sizeof(adapter->fw_name));
704
705 if (req_fw_nowait) {
706 ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name,
707 adapter->dev, GFP_KERNEL, adapter,
708 mwifiex_fw_dpc);
709 } else {
710 ret = request_firmware(&adapter->firmware,
711 adapter->fw_name,
712 adapter->dev);
713 }
714
715 if (ret < 0)
716 mwifiex_dbg(adapter, ERROR, "request_firmware%s error %d\n",
717 req_fw_nowait ? "_nowait" : "", ret);
718 return ret;
719 }
720
721 /*
722 * CFG802.11 network device handler for open.
723 *
724 * Starts the data queue.
725 */
726 static int
mwifiex_open(struct net_device * dev)727 mwifiex_open(struct net_device *dev)
728 {
729 netif_carrier_off(dev);
730
731 return 0;
732 }
733
734 /*
735 * CFG802.11 network device handler for close.
736 */
737 static int
mwifiex_close(struct net_device * dev)738 mwifiex_close(struct net_device *dev)
739 {
740 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
741
742 if (priv->scan_request) {
743 struct cfg80211_scan_info info = {
744 .aborted = true,
745 };
746
747 mwifiex_dbg(priv->adapter, INFO,
748 "aborting scan on ndo_stop\n");
749 cfg80211_scan_done(priv->scan_request, &info);
750 priv->scan_request = NULL;
751 priv->scan_aborting = true;
752 }
753
754 if (priv->sched_scanning) {
755 mwifiex_dbg(priv->adapter, INFO,
756 "aborting bgscan on ndo_stop\n");
757 mwifiex_stop_bg_scan(priv);
758 cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
759 }
760
761 return 0;
762 }
763
764 static bool
mwifiex_bypass_tx_queue(struct mwifiex_private * priv,struct sk_buff * skb)765 mwifiex_bypass_tx_queue(struct mwifiex_private *priv,
766 struct sk_buff *skb)
767 {
768 struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
769
770 if (ntohs(eth_hdr->h_proto) == ETH_P_PAE ||
771 mwifiex_is_skb_mgmt_frame(skb) ||
772 (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
773 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
774 (ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) {
775 mwifiex_dbg(priv->adapter, DATA,
776 "bypass txqueue; eth type %#x, mgmt %d\n",
777 ntohs(eth_hdr->h_proto),
778 mwifiex_is_skb_mgmt_frame(skb));
779 if (eth_hdr->h_proto == htons(ETH_P_PAE))
780 mwifiex_dbg(priv->adapter, MSG,
781 "key: send EAPOL to %pM\n",
782 eth_hdr->h_dest);
783 return true;
784 }
785
786 return false;
787 }
788 /*
789 * Add buffer into wmm tx queue and queue work to transmit it.
790 */
mwifiex_queue_tx_pkt(struct mwifiex_private * priv,struct sk_buff * skb)791 int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)
792 {
793 struct netdev_queue *txq;
794 int index = mwifiex_1d_to_wmm_queue[skb->priority];
795
796 if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) {
797 txq = netdev_get_tx_queue(priv->netdev, index);
798 if (!netif_tx_queue_stopped(txq)) {
799 netif_tx_stop_queue(txq);
800 mwifiex_dbg(priv->adapter, DATA,
801 "stop queue: %d\n", index);
802 }
803 }
804
805 if (mwifiex_bypass_tx_queue(priv, skb)) {
806 atomic_inc(&priv->adapter->tx_pending);
807 atomic_inc(&priv->adapter->bypass_tx_pending);
808 mwifiex_wmm_add_buf_bypass_txqueue(priv, skb);
809 } else {
810 atomic_inc(&priv->adapter->tx_pending);
811 mwifiex_wmm_add_buf_txqueue(priv, skb);
812 }
813
814 mwifiex_queue_main_work(priv->adapter);
815
816 return 0;
817 }
818
819 struct sk_buff *
mwifiex_clone_skb_for_tx_status(struct mwifiex_private * priv,struct sk_buff * skb,u8 flag,u64 * cookie)820 mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv,
821 struct sk_buff *skb, u8 flag, u64 *cookie)
822 {
823 struct sk_buff *orig_skb = skb;
824 struct mwifiex_txinfo *tx_info, *orig_tx_info;
825
826 skb = skb_clone(skb, GFP_ATOMIC);
827 if (skb) {
828 int id;
829
830 spin_lock_bh(&priv->ack_status_lock);
831 id = idr_alloc(&priv->ack_status_frames, orig_skb,
832 1, 0x10, GFP_ATOMIC);
833 spin_unlock_bh(&priv->ack_status_lock);
834
835 if (id >= 0) {
836 tx_info = MWIFIEX_SKB_TXCB(skb);
837 tx_info->ack_frame_id = id;
838 tx_info->flags |= flag;
839 orig_tx_info = MWIFIEX_SKB_TXCB(orig_skb);
840 orig_tx_info->ack_frame_id = id;
841 orig_tx_info->flags |= flag;
842
843 if (flag == MWIFIEX_BUF_FLAG_ACTION_TX_STATUS && cookie)
844 orig_tx_info->cookie = *cookie;
845
846 } else if (skb_shared(skb)) {
847 kfree_skb(orig_skb);
848 } else {
849 kfree_skb(skb);
850 skb = orig_skb;
851 }
852 } else {
853 /* couldn't clone -- lose tx status ... */
854 skb = orig_skb;
855 }
856
857 return skb;
858 }
859
860 /*
861 * CFG802.11 network device handler for data transmission.
862 */
863 static netdev_tx_t
mwifiex_hard_start_xmit(struct sk_buff * skb,struct net_device * dev)864 mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
865 {
866 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
867 struct sk_buff *new_skb;
868 struct mwifiex_txinfo *tx_info;
869 bool multicast;
870
871 mwifiex_dbg(priv->adapter, DATA,
872 "data: %lu BSS(%d-%d): Data <= kernel\n",
873 jiffies, priv->bss_type, priv->bss_num);
874
875 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &priv->adapter->work_flags)) {
876 kfree_skb(skb);
877 priv->stats.tx_dropped++;
878 return 0;
879 }
880 if (!skb->len || (skb->len > ETH_FRAME_LEN)) {
881 mwifiex_dbg(priv->adapter, ERROR,
882 "Tx: bad skb len %d\n", skb->len);
883 kfree_skb(skb);
884 priv->stats.tx_dropped++;
885 return 0;
886 }
887 if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) {
888 mwifiex_dbg(priv->adapter, DATA,
889 "data: Tx: insufficient skb headroom %d\n",
890 skb_headroom(skb));
891 /* Insufficient skb headroom - allocate a new skb */
892 new_skb =
893 skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
894 if (unlikely(!new_skb)) {
895 mwifiex_dbg(priv->adapter, ERROR,
896 "Tx: cannot alloca new_skb\n");
897 kfree_skb(skb);
898 priv->stats.tx_dropped++;
899 return 0;
900 }
901 kfree_skb(skb);
902 skb = new_skb;
903 mwifiex_dbg(priv->adapter, INFO,
904 "info: new skb headroomd %d\n",
905 skb_headroom(skb));
906 }
907
908 tx_info = MWIFIEX_SKB_TXCB(skb);
909 memset(tx_info, 0, sizeof(*tx_info));
910 tx_info->bss_num = priv->bss_num;
911 tx_info->bss_type = priv->bss_type;
912 tx_info->pkt_len = skb->len;
913
914 multicast = is_multicast_ether_addr(skb->data);
915
916 if (unlikely(!multicast && sk_requests_wifi_status(skb->sk) &&
917 priv->adapter->fw_api_ver == MWIFIEX_FW_V15))
918 skb = mwifiex_clone_skb_for_tx_status(priv,
919 skb,
920 MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS, NULL);
921
922 /* Record the current time the packet was queued; used to
923 * determine the amount of time the packet was queued in
924 * the driver before it was sent to the firmware.
925 * The delay is then sent along with the packet to the
926 * firmware for aggregate delay calculation for stats and
927 * MSDU lifetime expiry.
928 */
929 __net_timestamp(skb);
930
931 if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
932 priv->bss_type == MWIFIEX_BSS_TYPE_STA &&
933 !ether_addr_equal_unaligned(priv->cfg_bssid, skb->data)) {
934 if (priv->adapter->auto_tdls && priv->check_tdls_tx)
935 mwifiex_tdls_check_tx(priv, skb);
936 }
937
938 mwifiex_queue_tx_pkt(priv, skb);
939
940 return 0;
941 }
942
mwifiex_set_mac_address(struct mwifiex_private * priv,struct net_device * dev,bool external,u8 * new_mac)943 int mwifiex_set_mac_address(struct mwifiex_private *priv,
944 struct net_device *dev, bool external,
945 u8 *new_mac)
946 {
947 int ret;
948 u64 mac_addr, old_mac_addr;
949
950 old_mac_addr = ether_addr_to_u64(priv->curr_addr);
951
952 if (external) {
953 mac_addr = ether_addr_to_u64(new_mac);
954 } else {
955 /* Internal mac address change */
956 if (priv->bss_type == MWIFIEX_BSS_TYPE_ANY)
957 return -EOPNOTSUPP;
958
959 mac_addr = old_mac_addr;
960
961 if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) {
962 mac_addr |= BIT_ULL(MWIFIEX_MAC_LOCAL_ADMIN_BIT);
963 mac_addr += priv->bss_num;
964 } else if (priv->adapter->priv[0] != priv) {
965 /* Set mac address based on bss_type/bss_num */
966 mac_addr ^= BIT_ULL(priv->bss_type + 8);
967 mac_addr += priv->bss_num;
968 }
969 }
970
971 u64_to_ether_addr(mac_addr, priv->curr_addr);
972
973 /* Send request to firmware */
974 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
975 HostCmd_ACT_GEN_SET, 0, NULL, true);
976
977 if (ret) {
978 u64_to_ether_addr(old_mac_addr, priv->curr_addr);
979 mwifiex_dbg(priv->adapter, ERROR,
980 "set mac address failed: ret=%d\n", ret);
981 return ret;
982 }
983
984 eth_hw_addr_set(dev, priv->curr_addr);
985 return 0;
986 }
987
988 /* CFG802.11 network device handler for setting MAC address.
989 */
990 static int
mwifiex_ndo_set_mac_address(struct net_device * dev,void * addr)991 mwifiex_ndo_set_mac_address(struct net_device *dev, void *addr)
992 {
993 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
994 struct sockaddr *hw_addr = addr;
995
996 return mwifiex_set_mac_address(priv, dev, true, hw_addr->sa_data);
997 }
998
999 /*
1000 * CFG802.11 network device handler for setting multicast list.
1001 */
mwifiex_set_multicast_list(struct net_device * dev)1002 static void mwifiex_set_multicast_list(struct net_device *dev)
1003 {
1004 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1005 struct mwifiex_multicast_list mcast_list;
1006
1007 if (dev->flags & IFF_PROMISC) {
1008 mcast_list.mode = MWIFIEX_PROMISC_MODE;
1009 } else if (dev->flags & IFF_ALLMULTI ||
1010 netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) {
1011 mcast_list.mode = MWIFIEX_ALL_MULTI_MODE;
1012 } else {
1013 mcast_list.mode = MWIFIEX_MULTICAST_MODE;
1014 mcast_list.num_multicast_addr =
1015 mwifiex_copy_mcast_addr(&mcast_list, dev);
1016 }
1017 mwifiex_request_set_multicast_list(priv, &mcast_list);
1018 }
1019
1020 /*
1021 * CFG802.11 network device handler for transmission timeout.
1022 */
1023 static void
mwifiex_tx_timeout(struct net_device * dev,unsigned int txqueue)1024 mwifiex_tx_timeout(struct net_device *dev, unsigned int txqueue)
1025 {
1026 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1027
1028 priv->num_tx_timeout++;
1029 priv->tx_timeout_cnt++;
1030 mwifiex_dbg(priv->adapter, ERROR,
1031 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
1032 jiffies, priv->tx_timeout_cnt, priv->bss_type,
1033 priv->bss_num);
1034 mwifiex_set_trans_start(dev);
1035
1036 if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&
1037 priv->adapter->if_ops.card_reset) {
1038 mwifiex_dbg(priv->adapter, ERROR,
1039 "tx_timeout_cnt exceeds threshold.\t"
1040 "Triggering card reset!\n");
1041 priv->adapter->if_ops.card_reset(priv->adapter);
1042 }
1043 }
1044
mwifiex_multi_chan_resync(struct mwifiex_adapter * adapter)1045 void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter)
1046 {
1047 struct usb_card_rec *card = adapter->card;
1048 struct mwifiex_private *priv;
1049 u16 tx_buf_size;
1050 int i, ret;
1051
1052 card->mc_resync_flag = true;
1053 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
1054 if (atomic_read(&card->port[i].tx_data_urb_pending)) {
1055 mwifiex_dbg(adapter, WARN, "pending data urb in sys\n");
1056 return;
1057 }
1058 }
1059
1060 card->mc_resync_flag = false;
1061 tx_buf_size = 0xffff;
1062 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1063 ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF,
1064 HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false);
1065 if (ret)
1066 mwifiex_dbg(adapter, ERROR,
1067 "send reconfig tx buf size cmd err\n");
1068 }
1069 EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync);
1070
mwifiex_upload_device_dump(struct mwifiex_adapter * adapter)1071 void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter)
1072 {
1073 /* Dump all the memory data into single file, a userspace script will
1074 * be used to split all the memory data to multiple files
1075 */
1076 mwifiex_dbg(adapter, MSG,
1077 "== mwifiex dump information to /sys/class/devcoredump start\n");
1078 dev_coredumpv(adapter->dev, adapter->devdump_data, adapter->devdump_len,
1079 GFP_KERNEL);
1080 mwifiex_dbg(adapter, MSG,
1081 "== mwifiex dump information to /sys/class/devcoredump end\n");
1082
1083 /* Device dump data will be freed in device coredump release function
1084 * after 5 min. Here reset adapter->devdump_data and ->devdump_len
1085 * to avoid it been accidentally reused.
1086 */
1087 adapter->devdump_data = NULL;
1088 adapter->devdump_len = 0;
1089 }
1090 EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump);
1091
mwifiex_drv_info_dump(struct mwifiex_adapter * adapter)1092 void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter)
1093 {
1094 char *p;
1095 char drv_version[64];
1096 struct usb_card_rec *cardp;
1097 struct sdio_mmc_card *sdio_card;
1098 struct mwifiex_private *priv;
1099 int i, idx;
1100 struct netdev_queue *txq;
1101 struct mwifiex_debug_info *debug_info;
1102
1103 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n");
1104
1105 p = adapter->devdump_data;
1106 strcpy(p, "========Start dump driverinfo========\n");
1107 p += strlen("========Start dump driverinfo========\n");
1108 p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
1109
1110 mwifiex_drv_get_driver_version(adapter, drv_version,
1111 sizeof(drv_version) - 1);
1112 p += sprintf(p, "driver_version = %s\n", drv_version);
1113
1114 if (adapter->iface_type == MWIFIEX_USB) {
1115 cardp = (struct usb_card_rec *)adapter->card;
1116 p += sprintf(p, "tx_cmd_urb_pending = %d\n",
1117 atomic_read(&cardp->tx_cmd_urb_pending));
1118 p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n",
1119 atomic_read(&cardp->port[0].tx_data_urb_pending));
1120 p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n",
1121 atomic_read(&cardp->port[1].tx_data_urb_pending));
1122 p += sprintf(p, "rx_cmd_urb_pending = %d\n",
1123 atomic_read(&cardp->rx_cmd_urb_pending));
1124 p += sprintf(p, "rx_data_urb_pending = %d\n",
1125 atomic_read(&cardp->rx_data_urb_pending));
1126 }
1127
1128 p += sprintf(p, "tx_pending = %d\n",
1129 atomic_read(&adapter->tx_pending));
1130 p += sprintf(p, "rx_pending = %d\n",
1131 atomic_read(&adapter->rx_pending));
1132
1133 if (adapter->iface_type == MWIFIEX_SDIO) {
1134 sdio_card = (struct sdio_mmc_card *)adapter->card;
1135 p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
1136 sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port);
1137 p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
1138 sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port);
1139 }
1140
1141 for (i = 0; i < adapter->priv_num; i++) {
1142 if (!adapter->priv[i]->netdev)
1143 continue;
1144 priv = adapter->priv[i];
1145 p += sprintf(p, "\n[interface : \"%s\"]\n",
1146 priv->netdev->name);
1147 p += sprintf(p, "wmm_tx_pending[0] = %d\n",
1148 atomic_read(&priv->wmm_tx_pending[0]));
1149 p += sprintf(p, "wmm_tx_pending[1] = %d\n",
1150 atomic_read(&priv->wmm_tx_pending[1]));
1151 p += sprintf(p, "wmm_tx_pending[2] = %d\n",
1152 atomic_read(&priv->wmm_tx_pending[2]));
1153 p += sprintf(p, "wmm_tx_pending[3] = %d\n",
1154 atomic_read(&priv->wmm_tx_pending[3]));
1155 p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ?
1156 "Disconnected" : "Connected");
1157 p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev)
1158 ? "on" : "off"));
1159 for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) {
1160 txq = netdev_get_tx_queue(priv->netdev, idx);
1161 p += sprintf(p, "tx queue %d:%s ", idx,
1162 netif_tx_queue_stopped(txq) ?
1163 "stopped" : "started");
1164 }
1165 p += sprintf(p, "\n%s: num_tx_timeout = %d\n",
1166 priv->netdev->name, priv->num_tx_timeout);
1167 }
1168
1169 if (adapter->iface_type == MWIFIEX_SDIO ||
1170 adapter->iface_type == MWIFIEX_PCIE) {
1171 p += sprintf(p, "\n=== %s register dump===\n",
1172 adapter->iface_type == MWIFIEX_SDIO ?
1173 "SDIO" : "PCIE");
1174 if (adapter->if_ops.reg_dump)
1175 p += adapter->if_ops.reg_dump(adapter, p);
1176 }
1177 p += sprintf(p, "\n=== more debug information\n");
1178 debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);
1179 if (debug_info) {
1180 for (i = 0; i < adapter->priv_num; i++) {
1181 if (!adapter->priv[i]->netdev)
1182 continue;
1183 priv = adapter->priv[i];
1184 mwifiex_get_debug_info(priv, debug_info);
1185 p += mwifiex_debug_info_to_buffer(priv, p, debug_info);
1186 break;
1187 }
1188 kfree(debug_info);
1189 }
1190
1191 strcpy(p, "\n========End dump========\n");
1192 p += strlen("\n========End dump========\n");
1193 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n");
1194 adapter->devdump_len = p - (char *)adapter->devdump_data;
1195 }
1196 EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump);
1197
mwifiex_prepare_fw_dump_info(struct mwifiex_adapter * adapter)1198 void mwifiex_prepare_fw_dump_info(struct mwifiex_adapter *adapter)
1199 {
1200 u8 idx;
1201 char *fw_dump_ptr;
1202 u32 dump_len = 0;
1203
1204 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1205 struct memory_type_mapping *entry =
1206 &adapter->mem_type_mapping_tbl[idx];
1207
1208 if (entry->mem_ptr) {
1209 dump_len += (strlen("========Start dump ") +
1210 strlen(entry->mem_name) +
1211 strlen("========\n") +
1212 (entry->mem_size + 1) +
1213 strlen("\n========End dump========\n"));
1214 }
1215 }
1216
1217 if (dump_len + 1 + adapter->devdump_len > MWIFIEX_FW_DUMP_SIZE) {
1218 /* Realloc in case buffer overflow */
1219 fw_dump_ptr = vzalloc(dump_len + 1 + adapter->devdump_len);
1220 mwifiex_dbg(adapter, MSG, "Realloc device dump data.\n");
1221 if (!fw_dump_ptr) {
1222 vfree(adapter->devdump_data);
1223 mwifiex_dbg(adapter, ERROR,
1224 "vzalloc devdump data failure!\n");
1225 return;
1226 }
1227
1228 memmove(fw_dump_ptr, adapter->devdump_data,
1229 adapter->devdump_len);
1230 vfree(adapter->devdump_data);
1231 adapter->devdump_data = fw_dump_ptr;
1232 }
1233
1234 fw_dump_ptr = (char *)adapter->devdump_data + adapter->devdump_len;
1235
1236 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1237 struct memory_type_mapping *entry =
1238 &adapter->mem_type_mapping_tbl[idx];
1239
1240 if (entry->mem_ptr) {
1241 strcpy(fw_dump_ptr, "========Start dump ");
1242 fw_dump_ptr += strlen("========Start dump ");
1243
1244 strcpy(fw_dump_ptr, entry->mem_name);
1245 fw_dump_ptr += strlen(entry->mem_name);
1246
1247 strcpy(fw_dump_ptr, "========\n");
1248 fw_dump_ptr += strlen("========\n");
1249
1250 memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1251 fw_dump_ptr += entry->mem_size;
1252
1253 strcpy(fw_dump_ptr, "\n========End dump========\n");
1254 fw_dump_ptr += strlen("\n========End dump========\n");
1255 }
1256 }
1257
1258 adapter->devdump_len = fw_dump_ptr - (char *)adapter->devdump_data;
1259
1260 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1261 struct memory_type_mapping *entry =
1262 &adapter->mem_type_mapping_tbl[idx];
1263
1264 vfree(entry->mem_ptr);
1265 entry->mem_ptr = NULL;
1266 entry->mem_size = 0;
1267 }
1268 }
1269 EXPORT_SYMBOL_GPL(mwifiex_prepare_fw_dump_info);
1270
1271 /*
1272 * CFG802.11 network device handler for statistics retrieval.
1273 */
mwifiex_get_stats(struct net_device * dev)1274 static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
1275 {
1276 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1277
1278 return &priv->stats;
1279 }
1280
1281 static u16
mwifiex_netdev_select_wmm_queue(struct net_device * dev,struct sk_buff * skb,struct net_device * sb_dev)1282 mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb,
1283 struct net_device *sb_dev)
1284 {
1285 skb->priority = cfg80211_classify8021d(skb, NULL);
1286 return mwifiex_1d_to_wmm_queue[skb->priority];
1287 }
1288
1289 /* Network device handlers */
1290 static const struct net_device_ops mwifiex_netdev_ops = {
1291 .ndo_open = mwifiex_open,
1292 .ndo_stop = mwifiex_close,
1293 .ndo_start_xmit = mwifiex_hard_start_xmit,
1294 .ndo_set_mac_address = mwifiex_ndo_set_mac_address,
1295 .ndo_validate_addr = eth_validate_addr,
1296 .ndo_tx_timeout = mwifiex_tx_timeout,
1297 .ndo_get_stats = mwifiex_get_stats,
1298 .ndo_set_rx_mode = mwifiex_set_multicast_list,
1299 .ndo_select_queue = mwifiex_netdev_select_wmm_queue,
1300 };
1301
1302 /*
1303 * This function initializes the private structure parameters.
1304 *
1305 * The following wait queues are initialized -
1306 * - IOCTL wait queue
1307 * - Command wait queue
1308 * - Statistics wait queue
1309 *
1310 * ...and the following default parameters are set -
1311 * - Current key index : Set to 0
1312 * - Rate index : Set to auto
1313 * - Media connected : Set to disconnected
1314 * - Adhoc link sensed : Set to false
1315 * - Nick name : Set to null
1316 * - Number of Tx timeout : Set to 0
1317 * - Device address : Set to current address
1318 * - Rx histogram statistc : Set to 0
1319 *
1320 * In addition, the CFG80211 work queue is also created.
1321 */
mwifiex_init_priv_params(struct mwifiex_private * priv,struct net_device * dev)1322 void mwifiex_init_priv_params(struct mwifiex_private *priv,
1323 struct net_device *dev)
1324 {
1325 dev->netdev_ops = &mwifiex_netdev_ops;
1326 dev->needs_free_netdev = true;
1327 /* Initialize private structure */
1328 priv->current_key_index = 0;
1329 priv->media_connected = false;
1330 memset(priv->mgmt_ie, 0,
1331 sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX);
1332 priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK;
1333 priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK;
1334 priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK;
1335 priv->gen_idx = MWIFIEX_AUTO_IDX_MASK;
1336 priv->num_tx_timeout = 0;
1337 if (is_valid_ether_addr(dev->dev_addr))
1338 ether_addr_copy(priv->curr_addr, dev->dev_addr);
1339 else
1340 ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr);
1341
1342 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
1343 GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
1344 priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL);
1345 if (priv->hist_data)
1346 mwifiex_hist_data_reset(priv);
1347 }
1348 }
1349
1350 /*
1351 * This function check if command is pending.
1352 */
is_command_pending(struct mwifiex_adapter * adapter)1353 int is_command_pending(struct mwifiex_adapter *adapter)
1354 {
1355 int is_cmd_pend_q_empty;
1356
1357 spin_lock_bh(&adapter->cmd_pending_q_lock);
1358 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
1359 spin_unlock_bh(&adapter->cmd_pending_q_lock);
1360
1361 return !is_cmd_pend_q_empty;
1362 }
1363
1364 /* This is the host mlme work queue function.
1365 * It handles the host mlme operations.
1366 */
mwifiex_host_mlme_work_queue(struct work_struct * work)1367 static void mwifiex_host_mlme_work_queue(struct work_struct *work)
1368 {
1369 struct mwifiex_adapter *adapter =
1370 container_of(work, struct mwifiex_adapter, host_mlme_work);
1371
1372 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1373 return;
1374
1375 /* Check for host mlme disconnection */
1376 if (adapter->host_mlme_link_lost) {
1377 if (adapter->priv_link_lost) {
1378 mwifiex_reset_connect_state(adapter->priv_link_lost,
1379 WLAN_REASON_DEAUTH_LEAVING,
1380 true);
1381 adapter->priv_link_lost = NULL;
1382 }
1383 adapter->host_mlme_link_lost = false;
1384 }
1385
1386 /* Check for host mlme Assoc Resp */
1387 if (adapter->assoc_resp_received) {
1388 mwifiex_process_assoc_resp(adapter);
1389 adapter->assoc_resp_received = false;
1390 }
1391 }
1392
1393 /*
1394 * This is the RX work queue function.
1395 *
1396 * It handles the RX operations.
1397 */
mwifiex_rx_work_queue(struct work_struct * work)1398 static void mwifiex_rx_work_queue(struct work_struct *work)
1399 {
1400 struct mwifiex_adapter *adapter =
1401 container_of(work, struct mwifiex_adapter, rx_work);
1402
1403 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1404 return;
1405 mwifiex_process_rx(adapter);
1406 }
1407
1408 /*
1409 * This is the main work queue function.
1410 *
1411 * It handles the main process, which in turn handles the complete
1412 * driver operations.
1413 */
mwifiex_main_work_queue(struct work_struct * work)1414 static void mwifiex_main_work_queue(struct work_struct *work)
1415 {
1416 struct mwifiex_adapter *adapter =
1417 container_of(work, struct mwifiex_adapter, main_work);
1418
1419 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1420 return;
1421 mwifiex_main_process(adapter);
1422 }
1423
1424 /* Common teardown code used for both device removal and reset */
mwifiex_uninit_sw(struct mwifiex_adapter * adapter)1425 static void mwifiex_uninit_sw(struct mwifiex_adapter *adapter)
1426 {
1427 struct mwifiex_private *priv;
1428 int i;
1429
1430 /* We can no longer handle interrupts once we start doing the teardown
1431 * below.
1432 */
1433 if (adapter->if_ops.disable_int)
1434 adapter->if_ops.disable_int(adapter);
1435
1436 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1437 mwifiex_terminate_workqueue(adapter);
1438 adapter->int_status = 0;
1439
1440 /* Stop data */
1441 for (i = 0; i < adapter->priv_num; i++) {
1442 priv = adapter->priv[i];
1443 if (priv->netdev) {
1444 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
1445 if (netif_carrier_ok(priv->netdev))
1446 netif_carrier_off(priv->netdev);
1447 netif_device_detach(priv->netdev);
1448 }
1449 }
1450
1451 mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n");
1452 mwifiex_shutdown_drv(adapter);
1453 mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n");
1454
1455 if (atomic_read(&adapter->rx_pending) ||
1456 atomic_read(&adapter->tx_pending) ||
1457 atomic_read(&adapter->cmd_pending)) {
1458 mwifiex_dbg(adapter, ERROR,
1459 "rx_pending=%d, tx_pending=%d,\t"
1460 "cmd_pending=%d\n",
1461 atomic_read(&adapter->rx_pending),
1462 atomic_read(&adapter->tx_pending),
1463 atomic_read(&adapter->cmd_pending));
1464 }
1465
1466 for (i = 0; i < adapter->priv_num; i++) {
1467 priv = adapter->priv[i];
1468 rtnl_lock();
1469 if (priv->netdev &&
1470 priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED) {
1471 /*
1472 * Close the netdev now, because if we do it later, the
1473 * netdev notifiers will need to acquire the wiphy lock
1474 * again --> deadlock.
1475 */
1476 dev_close(priv->wdev.netdev);
1477 wiphy_lock(adapter->wiphy);
1478 mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
1479 wiphy_unlock(adapter->wiphy);
1480 }
1481 rtnl_unlock();
1482 }
1483
1484 wiphy_unregister(adapter->wiphy);
1485 wiphy_free(adapter->wiphy);
1486 adapter->wiphy = NULL;
1487
1488 vfree(adapter->chan_stats);
1489 mwifiex_free_cmd_buffers(adapter);
1490 }
1491
1492 /*
1493 * This function can be used for shutting down the adapter SW.
1494 */
mwifiex_shutdown_sw(struct mwifiex_adapter * adapter)1495 int mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
1496 {
1497 struct mwifiex_private *priv;
1498
1499 if (!adapter)
1500 return 0;
1501
1502 wait_for_completion(adapter->fw_done);
1503 /* Caller should ensure we aren't suspending while this happens */
1504 reinit_completion(adapter->fw_done);
1505
1506 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1507 mwifiex_deauthenticate(priv, NULL);
1508
1509 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
1510
1511 mwifiex_uninit_sw(adapter);
1512 adapter->is_up = false;
1513
1514 if (adapter->if_ops.down_dev)
1515 adapter->if_ops.down_dev(adapter);
1516
1517 return 0;
1518 }
1519 EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw);
1520
1521 /* This function can be used for reinitting the adapter SW. Required
1522 * code is extracted from mwifiex_add_card()
1523 */
1524 int
mwifiex_reinit_sw(struct mwifiex_adapter * adapter)1525 mwifiex_reinit_sw(struct mwifiex_adapter *adapter)
1526 {
1527 int ret;
1528
1529 mwifiex_init_lock_list(adapter);
1530 if (adapter->if_ops.up_dev)
1531 adapter->if_ops.up_dev(adapter);
1532
1533 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1534 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1535 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
1536 adapter->hs_activated = false;
1537 clear_bit(MWIFIEX_IS_CMD_TIMEDOUT, &adapter->work_flags);
1538 init_waitqueue_head(&adapter->hs_activate_wait_q);
1539 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1540 adapter->cmd_wait_q.status = 0;
1541 adapter->scan_wait_q_woken = false;
1542
1543 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1544 adapter->rx_work_enabled = true;
1545
1546 adapter->workqueue =
1547 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1548 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0);
1549 if (!adapter->workqueue)
1550 goto err_kmalloc;
1551
1552 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1553
1554 if (adapter->rx_work_enabled) {
1555 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1556 WQ_HIGHPRI |
1557 WQ_MEM_RECLAIM |
1558 WQ_UNBOUND, 0);
1559 if (!adapter->rx_workqueue)
1560 goto err_kmalloc;
1561 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1562 }
1563
1564 if (adapter->host_mlme_enabled) {
1565 adapter->host_mlme_workqueue =
1566 alloc_workqueue("MWIFIEX_HOST_MLME_WORK_QUEUE",
1567 WQ_HIGHPRI |
1568 WQ_MEM_RECLAIM |
1569 WQ_UNBOUND, 0);
1570 if (!adapter->host_mlme_workqueue)
1571 goto err_kmalloc;
1572 INIT_WORK(&adapter->host_mlme_work,
1573 mwifiex_host_mlme_work_queue);
1574 }
1575
1576 /* Register the device. Fill up the private data structure with
1577 * relevant information from the card. Some code extracted from
1578 * mwifiex_register_dev()
1579 */
1580 mwifiex_dbg(adapter, INFO, "%s, mwifiex_init_hw_fw()...\n", __func__);
1581
1582 if (mwifiex_init_hw_fw(adapter, false)) {
1583 mwifiex_dbg(adapter, ERROR,
1584 "%s: firmware init failed\n", __func__);
1585 goto err_init_fw;
1586 }
1587
1588 /* _mwifiex_fw_dpc() does its own cleanup */
1589 ret = _mwifiex_fw_dpc(adapter->firmware, adapter);
1590 if (ret) {
1591 pr_err("Failed to bring up adapter: %d\n", ret);
1592 return ret;
1593 }
1594 mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
1595
1596 return 0;
1597
1598 err_init_fw:
1599 mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__);
1600 if (adapter->if_ops.unregister_dev)
1601 adapter->if_ops.unregister_dev(adapter);
1602
1603 err_kmalloc:
1604 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1605 mwifiex_terminate_workqueue(adapter);
1606 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1607 mwifiex_dbg(adapter, ERROR,
1608 "info: %s: shutdown mwifiex\n", __func__);
1609 mwifiex_shutdown_drv(adapter);
1610 mwifiex_free_cmd_buffers(adapter);
1611 }
1612
1613 complete_all(adapter->fw_done);
1614 mwifiex_dbg(adapter, INFO, "%s, error\n", __func__);
1615
1616 return -1;
1617 }
1618 EXPORT_SYMBOL_GPL(mwifiex_reinit_sw);
1619
mwifiex_irq_wakeup_handler(int irq,void * priv)1620 static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv)
1621 {
1622 struct mwifiex_adapter *adapter = priv;
1623
1624 dev_dbg(adapter->dev, "%s: wake by wifi", __func__);
1625 adapter->wake_by_wifi = true;
1626 disable_irq_nosync(irq);
1627
1628 /* Notify PM core we are wakeup source */
1629 pm_wakeup_event(adapter->dev, 0);
1630 pm_system_wakeup();
1631
1632 return IRQ_HANDLED;
1633 }
1634
mwifiex_probe_of(struct mwifiex_adapter * adapter)1635 static void mwifiex_probe_of(struct mwifiex_adapter *adapter)
1636 {
1637 int ret;
1638 struct device *dev = adapter->dev;
1639
1640 if (!dev->of_node)
1641 goto err_exit;
1642
1643 adapter->dt_node = dev->of_node;
1644 adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0);
1645 if (!adapter->irq_wakeup) {
1646 dev_dbg(dev, "fail to parse irq_wakeup from device tree\n");
1647 goto err_exit;
1648 }
1649
1650 ret = devm_request_irq(dev, adapter->irq_wakeup,
1651 mwifiex_irq_wakeup_handler,
1652 IRQF_TRIGGER_LOW | IRQF_NO_AUTOEN,
1653 "wifi_wake", adapter);
1654 if (ret) {
1655 dev_err(dev, "Failed to request irq_wakeup %d (%d)\n",
1656 adapter->irq_wakeup, ret);
1657 goto err_exit;
1658 }
1659
1660 if (device_init_wakeup(dev, true)) {
1661 dev_err(dev, "fail to init wakeup for mwifiex\n");
1662 goto err_exit;
1663 }
1664 return;
1665
1666 err_exit:
1667 adapter->irq_wakeup = -1;
1668 }
1669
1670 /*
1671 * This function adds the card.
1672 *
1673 * This function follows the following major steps to set up the device -
1674 * - Initialize software. This includes probing the card, registering
1675 * the interface operations table, and allocating/initializing the
1676 * adapter structure
1677 * - Set up the netlink socket
1678 * - Create and start the main work queue
1679 * - Register the device
1680 * - Initialize firmware and hardware
1681 * - Add logical interfaces
1682 */
1683 int
mwifiex_add_card(void * card,struct completion * fw_done,const struct mwifiex_if_ops * if_ops,u8 iface_type,struct device * dev)1684 mwifiex_add_card(void *card, struct completion *fw_done,
1685 const struct mwifiex_if_ops *if_ops, u8 iface_type,
1686 struct device *dev)
1687 {
1688 struct mwifiex_adapter *adapter;
1689
1690 if (mwifiex_register(card, dev, if_ops, (void **)&adapter)) {
1691 pr_err("%s: software init failed\n", __func__);
1692 goto err_init_sw;
1693 }
1694
1695 mwifiex_probe_of(adapter);
1696
1697 adapter->iface_type = iface_type;
1698 adapter->fw_done = fw_done;
1699
1700 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1701 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1702 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
1703 adapter->hs_activated = false;
1704 init_waitqueue_head(&adapter->hs_activate_wait_q);
1705 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1706 adapter->cmd_wait_q.status = 0;
1707 adapter->scan_wait_q_woken = false;
1708
1709 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1710 adapter->rx_work_enabled = true;
1711
1712 adapter->workqueue =
1713 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1714 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0);
1715 if (!adapter->workqueue)
1716 goto err_kmalloc;
1717
1718 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1719
1720 if (adapter->rx_work_enabled) {
1721 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1722 WQ_HIGHPRI |
1723 WQ_MEM_RECLAIM |
1724 WQ_UNBOUND, 0);
1725 if (!adapter->rx_workqueue)
1726 goto err_kmalloc;
1727
1728 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1729 }
1730
1731 /* Register the device. Fill up the private data structure with relevant
1732 information from the card. */
1733 if (adapter->if_ops.register_dev(adapter)) {
1734 pr_err("%s: failed to register mwifiex device\n", __func__);
1735 goto err_registerdev;
1736 }
1737
1738 if (adapter->host_mlme_enabled) {
1739 adapter->host_mlme_workqueue =
1740 alloc_workqueue("MWIFIEX_HOST_MLME_WORK_QUEUE",
1741 WQ_HIGHPRI |
1742 WQ_MEM_RECLAIM |
1743 WQ_UNBOUND, 0);
1744 if (!adapter->host_mlme_workqueue)
1745 goto err_kmalloc;
1746 INIT_WORK(&adapter->host_mlme_work,
1747 mwifiex_host_mlme_work_queue);
1748 }
1749
1750 if (mwifiex_init_hw_fw(adapter, true)) {
1751 pr_err("%s: firmware init failed\n", __func__);
1752 goto err_init_fw;
1753 }
1754
1755 return 0;
1756
1757 err_init_fw:
1758 pr_debug("info: %s: unregister device\n", __func__);
1759 if (adapter->if_ops.unregister_dev)
1760 adapter->if_ops.unregister_dev(adapter);
1761 err_registerdev:
1762 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1763 mwifiex_terminate_workqueue(adapter);
1764 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1765 pr_debug("info: %s: shutdown mwifiex\n", __func__);
1766 mwifiex_shutdown_drv(adapter);
1767 mwifiex_free_cmd_buffers(adapter);
1768 }
1769 err_kmalloc:
1770 if (adapter->irq_wakeup >= 0)
1771 device_init_wakeup(adapter->dev, false);
1772 mwifiex_free_adapter(adapter);
1773
1774 err_init_sw:
1775
1776 return -1;
1777 }
1778 EXPORT_SYMBOL_GPL(mwifiex_add_card);
1779
1780 /*
1781 * This function removes the card.
1782 *
1783 * This function follows the following major steps to remove the device -
1784 * - Stop data traffic
1785 * - Shutdown firmware
1786 * - Remove the logical interfaces
1787 * - Terminate the work queue
1788 * - Unregister the device
1789 * - Free the adapter structure
1790 */
mwifiex_remove_card(struct mwifiex_adapter * adapter)1791 int mwifiex_remove_card(struct mwifiex_adapter *adapter)
1792 {
1793 if (!adapter)
1794 return 0;
1795
1796 if (adapter->is_up)
1797 mwifiex_uninit_sw(adapter);
1798
1799 if (adapter->irq_wakeup >= 0)
1800 device_init_wakeup(adapter->dev, false);
1801
1802 /* Unregister device */
1803 mwifiex_dbg(adapter, INFO,
1804 "info: unregister device\n");
1805 if (adapter->if_ops.unregister_dev)
1806 adapter->if_ops.unregister_dev(adapter);
1807 /* Free adapter structure */
1808 mwifiex_dbg(adapter, INFO,
1809 "info: free adapter\n");
1810 mwifiex_free_adapter(adapter);
1811
1812 return 0;
1813 }
1814 EXPORT_SYMBOL_GPL(mwifiex_remove_card);
1815
_mwifiex_dbg(const struct mwifiex_adapter * adapter,int mask,const char * fmt,...)1816 void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
1817 const char *fmt, ...)
1818 {
1819 struct va_format vaf;
1820 va_list args;
1821
1822 if (!(adapter->debug_mask & mask))
1823 return;
1824
1825 va_start(args, fmt);
1826
1827 vaf.fmt = fmt;
1828 vaf.va = &args;
1829
1830 if (adapter->dev)
1831 dev_info(adapter->dev, "%pV", &vaf);
1832 else
1833 pr_info("%pV", &vaf);
1834
1835 va_end(args);
1836 }
1837 EXPORT_SYMBOL_GPL(_mwifiex_dbg);
1838
1839 /*
1840 * This function initializes the module.
1841 *
1842 * The debug FS is also initialized if configured.
1843 */
1844 static int
mwifiex_init_module(void)1845 mwifiex_init_module(void)
1846 {
1847 #ifdef CONFIG_DEBUG_FS
1848 mwifiex_debugfs_init();
1849 #endif
1850 return 0;
1851 }
1852
1853 /*
1854 * This function cleans up the module.
1855 *
1856 * The debug FS is removed if available.
1857 */
1858 static void
mwifiex_cleanup_module(void)1859 mwifiex_cleanup_module(void)
1860 {
1861 #ifdef CONFIG_DEBUG_FS
1862 mwifiex_debugfs_remove();
1863 #endif
1864 }
1865
1866 module_init(mwifiex_init_module);
1867 module_exit(mwifiex_cleanup_module);
1868
1869 MODULE_AUTHOR("Marvell International Ltd.");
1870 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION);
1871 MODULE_VERSION(VERSION);
1872 MODULE_LICENSE("GPL v2");
1873