1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * NXP Wireless LAN device driver: major functions
4 *
5 * Copyright 2011-2020 NXP
6 */
7
8 #include <linux/suspend.h>
9
10 #include "main.h"
11 #include "wmm.h"
12 #include "cfg80211.h"
13 #include "11n.h"
14
15 #define VERSION "1.0"
16 #define MFG_FIRMWARE "mwifiex_mfg.bin"
17
18 static unsigned int debug_mask = MWIFIEX_DEFAULT_DEBUG_MASK;
19 module_param(debug_mask, uint, 0);
20 MODULE_PARM_DESC(debug_mask, "bitmap for debug flags");
21
22 const char driver_version[] = "mwifiex " VERSION " (%s) ";
23 static char *cal_data_cfg;
24 module_param(cal_data_cfg, charp, 0);
25
26 static unsigned short driver_mode;
27 module_param(driver_mode, ushort, 0);
28 MODULE_PARM_DESC(driver_mode,
29 "station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7");
30
31 bool mfg_mode;
32 module_param(mfg_mode, bool, 0);
33 MODULE_PARM_DESC(mfg_mode, "manufacturing mode enable:1, disable:0");
34
35 bool aggr_ctrl;
36 module_param(aggr_ctrl, bool, 0000);
37 MODULE_PARM_DESC(aggr_ctrl, "usb tx aggregation enable:1, disable:0");
38
39 const u16 mwifiex_1d_to_wmm_queue[8] = { 1, 0, 0, 1, 2, 2, 3, 3 };
40
41 /*
42 * This function registers the device and performs all the necessary
43 * initializations.
44 *
45 * The following initialization operations are performed -
46 * - Allocate adapter structure
47 * - Save interface specific operations table in adapter
48 * - Call interface specific initialization routine
49 * - Allocate private structures
50 * - Set default adapter structure parameters
51 * - Initialize locks
52 *
53 * In case of any errors during inittialization, this function also ensures
54 * proper cleanup before exiting.
55 */
mwifiex_register(void * card,struct device * dev,const struct mwifiex_if_ops * if_ops,void ** padapter)56 static int mwifiex_register(void *card, struct device *dev,
57 const struct mwifiex_if_ops *if_ops, void **padapter)
58 {
59 struct mwifiex_adapter *adapter;
60 int i;
61
62 adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL);
63 if (!adapter)
64 return -ENOMEM;
65
66 *padapter = adapter;
67 adapter->dev = dev;
68 adapter->card = card;
69
70 /* Save interface specific operations in adapter */
71 memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));
72 adapter->debug_mask = debug_mask;
73
74 /* card specific initialization has been deferred until now .. */
75 if (adapter->if_ops.init_if)
76 if (adapter->if_ops.init_if(adapter))
77 goto error;
78
79 adapter->priv_num = 0;
80
81 for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) {
82 /* Allocate memory for private structure */
83 adapter->priv[i] =
84 kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL);
85 if (!adapter->priv[i])
86 goto error;
87
88 adapter->priv[i]->adapter = adapter;
89 adapter->priv_num++;
90 }
91 mwifiex_init_lock_list(adapter);
92
93 timer_setup(&adapter->cmd_timer, mwifiex_cmd_timeout_func, 0);
94
95 return 0;
96
97 error:
98 mwifiex_dbg(adapter, ERROR,
99 "info: leave mwifiex_register with error\n");
100
101 for (i = 0; i < adapter->priv_num; i++)
102 kfree(adapter->priv[i]);
103
104 kfree(adapter);
105
106 return -1;
107 }
108
109 /*
110 * This function unregisters the device and performs all the necessary
111 * cleanups.
112 *
113 * The following cleanup operations are performed -
114 * - Free the timers
115 * - Free beacon buffers
116 * - Free private structures
117 * - Free adapter structure
118 */
mwifiex_unregister(struct mwifiex_adapter * adapter)119 static int mwifiex_unregister(struct mwifiex_adapter *adapter)
120 {
121 s32 i;
122
123 if (adapter->if_ops.cleanup_if)
124 adapter->if_ops.cleanup_if(adapter);
125
126 timer_shutdown_sync(&adapter->cmd_timer);
127
128 /* Free private structures */
129 for (i = 0; i < adapter->priv_num; i++) {
130 mwifiex_free_curr_bcn(adapter->priv[i]);
131 kfree(adapter->priv[i]);
132 }
133
134 if (adapter->nd_info) {
135 for (i = 0 ; i < adapter->nd_info->n_matches ; i++)
136 kfree(adapter->nd_info->matches[i]);
137 kfree(adapter->nd_info);
138 adapter->nd_info = NULL;
139 }
140
141 kfree(adapter->regd);
142
143 kfree(adapter);
144 return 0;
145 }
146
mwifiex_queue_main_work(struct mwifiex_adapter * adapter)147 void mwifiex_queue_main_work(struct mwifiex_adapter *adapter)
148 {
149 unsigned long flags;
150
151 spin_lock_irqsave(&adapter->main_proc_lock, flags);
152 if (adapter->mwifiex_processing) {
153 adapter->more_task_flag = true;
154 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
155 } else {
156 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
157 queue_work(adapter->workqueue, &adapter->main_work);
158 }
159 }
160 EXPORT_SYMBOL_GPL(mwifiex_queue_main_work);
161
mwifiex_queue_rx_work(struct mwifiex_adapter * adapter)162 static void mwifiex_queue_rx_work(struct mwifiex_adapter *adapter)
163 {
164 spin_lock_bh(&adapter->rx_proc_lock);
165 if (adapter->rx_processing) {
166 spin_unlock_bh(&adapter->rx_proc_lock);
167 } else {
168 spin_unlock_bh(&adapter->rx_proc_lock);
169 queue_work(adapter->rx_workqueue, &adapter->rx_work);
170 }
171 }
172
mwifiex_process_rx(struct mwifiex_adapter * adapter)173 static int mwifiex_process_rx(struct mwifiex_adapter *adapter)
174 {
175 struct sk_buff *skb;
176 struct mwifiex_rxinfo *rx_info;
177
178 spin_lock_bh(&adapter->rx_proc_lock);
179 if (adapter->rx_processing || adapter->rx_locked) {
180 spin_unlock_bh(&adapter->rx_proc_lock);
181 goto exit_rx_proc;
182 } else {
183 adapter->rx_processing = true;
184 spin_unlock_bh(&adapter->rx_proc_lock);
185 }
186
187 /* Check for Rx data */
188 while ((skb = skb_dequeue(&adapter->rx_data_q))) {
189 atomic_dec(&adapter->rx_pending);
190 if ((adapter->delay_main_work ||
191 adapter->iface_type == MWIFIEX_USB) &&
192 (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {
193 if (adapter->if_ops.submit_rem_rx_urbs)
194 adapter->if_ops.submit_rem_rx_urbs(adapter);
195 adapter->delay_main_work = false;
196 mwifiex_queue_main_work(adapter);
197 }
198 rx_info = MWIFIEX_SKB_RXCB(skb);
199 if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) {
200 if (adapter->if_ops.deaggr_pkt)
201 adapter->if_ops.deaggr_pkt(adapter, skb);
202 dev_kfree_skb_any(skb);
203 } else {
204 mwifiex_handle_rx_packet(adapter, skb);
205 }
206 }
207 spin_lock_bh(&adapter->rx_proc_lock);
208 adapter->rx_processing = false;
209 spin_unlock_bh(&adapter->rx_proc_lock);
210
211 exit_rx_proc:
212 return 0;
213 }
214
maybe_quirk_fw_disable_ds(struct mwifiex_adapter * adapter)215 static void maybe_quirk_fw_disable_ds(struct mwifiex_adapter *adapter)
216 {
217 struct mwifiex_private *priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA);
218 struct mwifiex_ver_ext ver_ext;
219
220 if (test_and_set_bit(MWIFIEX_IS_REQUESTING_FW_VEREXT, &adapter->work_flags))
221 return;
222
223 memset(&ver_ext, 0, sizeof(ver_ext));
224 ver_ext.version_str_sel = 1;
225 if (mwifiex_send_cmd(priv, HostCmd_CMD_VERSION_EXT,
226 HostCmd_ACT_GEN_GET, 0, &ver_ext, false)) {
227 mwifiex_dbg(priv->adapter, MSG,
228 "Checking hardware revision failed.\n");
229 }
230 }
231
232 /*
233 * The main process.
234 *
235 * This function is the main procedure of the driver and handles various driver
236 * operations. It runs in a loop and provides the core functionalities.
237 *
238 * The main responsibilities of this function are -
239 * - Ensure concurrency control
240 * - Handle pending interrupts and call interrupt handlers
241 * - Wake up the card if required
242 * - Handle command responses and call response handlers
243 * - Handle events and call event handlers
244 * - Execute pending commands
245 * - Transmit pending data packets
246 */
mwifiex_main_process(struct mwifiex_adapter * adapter)247 int mwifiex_main_process(struct mwifiex_adapter *adapter)
248 {
249 int ret = 0;
250 unsigned long flags;
251
252 spin_lock_irqsave(&adapter->main_proc_lock, flags);
253
254 /* Check if already processing */
255 if (adapter->mwifiex_processing || adapter->main_locked) {
256 adapter->more_task_flag = true;
257 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
258 return 0;
259 } else {
260 adapter->mwifiex_processing = true;
261 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
262 }
263 process_start:
264 do {
265 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
266 break;
267
268 /* For non-USB interfaces, If we process interrupts first, it
269 * would increase RX pending even further. Avoid this by
270 * checking if rx_pending has crossed high threshold and
271 * schedule rx work queue and then process interrupts.
272 * For USB interface, there are no interrupts. We already have
273 * HIGH_RX_PENDING check in usb.c
274 */
275 if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING &&
276 adapter->iface_type != MWIFIEX_USB) {
277 adapter->delay_main_work = true;
278 mwifiex_queue_rx_work(adapter);
279 break;
280 }
281
282 /* Handle pending interrupt if any */
283 if (adapter->int_status) {
284 if (adapter->hs_activated)
285 mwifiex_process_hs_config(adapter);
286 if (adapter->if_ops.process_int_status)
287 adapter->if_ops.process_int_status(adapter);
288 }
289
290 if (adapter->rx_work_enabled && adapter->data_received)
291 mwifiex_queue_rx_work(adapter);
292
293 /* Need to wake up the card ? */
294 if ((adapter->ps_state == PS_STATE_SLEEP) &&
295 (adapter->pm_wakeup_card_req &&
296 !adapter->pm_wakeup_fw_try) &&
297 (is_command_pending(adapter) ||
298 !skb_queue_empty(&adapter->tx_data_q) ||
299 !mwifiex_bypass_txlist_empty(adapter) ||
300 !mwifiex_wmm_lists_empty(adapter))) {
301 adapter->pm_wakeup_fw_try = true;
302 mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3));
303 adapter->if_ops.wakeup(adapter);
304 continue;
305 }
306
307 if (IS_CARD_RX_RCVD(adapter)) {
308 adapter->data_received = false;
309 adapter->pm_wakeup_fw_try = false;
310 del_timer(&adapter->wakeup_timer);
311 if (adapter->ps_state == PS_STATE_SLEEP)
312 adapter->ps_state = PS_STATE_AWAKE;
313 } else {
314 /* We have tried to wakeup the card already */
315 if (adapter->pm_wakeup_fw_try)
316 break;
317 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
318 mwifiex_check_ps_cond(adapter);
319
320 if (adapter->ps_state != PS_STATE_AWAKE)
321 break;
322 if (adapter->tx_lock_flag) {
323 if (adapter->iface_type == MWIFIEX_USB) {
324 if (!adapter->usb_mc_setup)
325 break;
326 } else
327 break;
328 }
329
330 if ((!adapter->scan_chan_gap_enabled &&
331 adapter->scan_processing) || adapter->data_sent ||
332 mwifiex_is_tdls_chan_switching
333 (mwifiex_get_priv(adapter,
334 MWIFIEX_BSS_ROLE_STA)) ||
335 (mwifiex_wmm_lists_empty(adapter) &&
336 mwifiex_bypass_txlist_empty(adapter) &&
337 skb_queue_empty(&adapter->tx_data_q))) {
338 if (adapter->cmd_sent || adapter->curr_cmd ||
339 !mwifiex_is_send_cmd_allowed
340 (mwifiex_get_priv(adapter,
341 MWIFIEX_BSS_ROLE_STA)) ||
342 (!is_command_pending(adapter)))
343 break;
344 }
345 }
346
347 /* Check for event */
348 if (adapter->event_received) {
349 adapter->event_received = false;
350 mwifiex_process_event(adapter);
351 }
352
353 /* Check for Cmd Resp */
354 if (adapter->cmd_resp_received) {
355 adapter->cmd_resp_received = false;
356 mwifiex_process_cmdresp(adapter);
357
358 /* call mwifiex back when init_fw is done */
359 if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) {
360 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
361 mwifiex_init_fw_complete(adapter);
362 maybe_quirk_fw_disable_ds(adapter);
363 }
364 }
365
366 /* Check if we need to confirm Sleep Request
367 received previously */
368 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
369 mwifiex_check_ps_cond(adapter);
370
371 /* * The ps_state may have been changed during processing of
372 * Sleep Request event.
373 */
374 if ((adapter->ps_state == PS_STATE_SLEEP) ||
375 (adapter->ps_state == PS_STATE_PRE_SLEEP) ||
376 (adapter->ps_state == PS_STATE_SLEEP_CFM)) {
377 continue;
378 }
379
380 if (adapter->tx_lock_flag) {
381 if (adapter->iface_type == MWIFIEX_USB) {
382 if (!adapter->usb_mc_setup)
383 continue;
384 } else
385 continue;
386 }
387
388 if (!adapter->cmd_sent && !adapter->curr_cmd &&
389 mwifiex_is_send_cmd_allowed
390 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
391 if (mwifiex_exec_next_cmd(adapter) == -1) {
392 ret = -1;
393 break;
394 }
395 }
396
397 /** If USB Multi channel setup ongoing,
398 * wait for ready to tx data.
399 */
400 if (adapter->iface_type == MWIFIEX_USB &&
401 adapter->usb_mc_setup)
402 continue;
403
404 if ((adapter->scan_chan_gap_enabled ||
405 !adapter->scan_processing) &&
406 !adapter->data_sent &&
407 !skb_queue_empty(&adapter->tx_data_q)) {
408 if (adapter->hs_activated_manually) {
409 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY),
410 MWIFIEX_ASYNC_CMD);
411 adapter->hs_activated_manually = false;
412 }
413
414 mwifiex_process_tx_queue(adapter);
415 if (adapter->hs_activated) {
416 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
417 &adapter->work_flags);
418 mwifiex_hs_activated_event
419 (mwifiex_get_priv
420 (adapter, MWIFIEX_BSS_ROLE_ANY),
421 false);
422 }
423 }
424
425 if ((adapter->scan_chan_gap_enabled ||
426 !adapter->scan_processing) &&
427 !adapter->data_sent &&
428 !mwifiex_bypass_txlist_empty(adapter) &&
429 !mwifiex_is_tdls_chan_switching
430 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
431 if (adapter->hs_activated_manually) {
432 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY),
433 MWIFIEX_ASYNC_CMD);
434 adapter->hs_activated_manually = false;
435 }
436
437 mwifiex_process_bypass_tx(adapter);
438 if (adapter->hs_activated) {
439 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
440 &adapter->work_flags);
441 mwifiex_hs_activated_event
442 (mwifiex_get_priv
443 (adapter, MWIFIEX_BSS_ROLE_ANY),
444 false);
445 }
446 }
447
448 if ((adapter->scan_chan_gap_enabled ||
449 !adapter->scan_processing) &&
450 !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) &&
451 !mwifiex_is_tdls_chan_switching
452 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
453 if (adapter->hs_activated_manually) {
454 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY),
455 MWIFIEX_ASYNC_CMD);
456 adapter->hs_activated_manually = false;
457 }
458
459 mwifiex_wmm_process_tx(adapter);
460 if (adapter->hs_activated) {
461 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
462 &adapter->work_flags);
463 mwifiex_hs_activated_event
464 (mwifiex_get_priv
465 (adapter, MWIFIEX_BSS_ROLE_ANY),
466 false);
467 }
468 }
469
470 if (adapter->delay_null_pkt && !adapter->cmd_sent &&
471 !adapter->curr_cmd && !is_command_pending(adapter) &&
472 (mwifiex_wmm_lists_empty(adapter) &&
473 mwifiex_bypass_txlist_empty(adapter) &&
474 skb_queue_empty(&adapter->tx_data_q))) {
475 if (!mwifiex_send_null_packet
476 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
477 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
478 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) {
479 adapter->delay_null_pkt = false;
480 adapter->ps_state = PS_STATE_SLEEP;
481 }
482 break;
483 }
484 } while (true);
485
486 spin_lock_irqsave(&adapter->main_proc_lock, flags);
487 if (adapter->more_task_flag) {
488 adapter->more_task_flag = false;
489 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
490 goto process_start;
491 }
492 adapter->mwifiex_processing = false;
493 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
494
495 return ret;
496 }
497 EXPORT_SYMBOL_GPL(mwifiex_main_process);
498
499 /*
500 * This function frees the adapter structure.
501 *
502 * Additionally, this closes the netlink socket, frees the timers
503 * and private structures.
504 */
mwifiex_free_adapter(struct mwifiex_adapter * adapter)505 static void mwifiex_free_adapter(struct mwifiex_adapter *adapter)
506 {
507 if (!adapter) {
508 pr_err("%s: adapter is NULL\n", __func__);
509 return;
510 }
511
512 mwifiex_unregister(adapter);
513 pr_debug("info: %s: free adapter\n", __func__);
514 }
515
516 /*
517 * This function cancels all works in the queue and destroys
518 * the main workqueue.
519 */
mwifiex_terminate_workqueue(struct mwifiex_adapter * adapter)520 static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter)
521 {
522 if (adapter->workqueue) {
523 destroy_workqueue(adapter->workqueue);
524 adapter->workqueue = NULL;
525 }
526
527 if (adapter->rx_workqueue) {
528 destroy_workqueue(adapter->rx_workqueue);
529 adapter->rx_workqueue = NULL;
530 }
531
532 if (adapter->host_mlme_workqueue) {
533 destroy_workqueue(adapter->host_mlme_workqueue);
534 adapter->host_mlme_workqueue = NULL;
535 }
536 }
537
538 /*
539 * This function gets firmware and initializes it.
540 *
541 * The main initialization steps followed are -
542 * - Download the correct firmware to card
543 * - Issue the init commands to firmware
544 */
_mwifiex_fw_dpc(const struct firmware * firmware,void * context)545 static int _mwifiex_fw_dpc(const struct firmware *firmware, void *context)
546 {
547 int ret;
548 char fmt[64];
549 struct mwifiex_adapter *adapter = context;
550 struct mwifiex_fw_image fw;
551 bool init_failed = false;
552 struct wireless_dev *wdev;
553 struct completion *fw_done = adapter->fw_done;
554
555 if (!firmware) {
556 mwifiex_dbg(adapter, ERROR,
557 "Failed to get firmware %s\n", adapter->fw_name);
558 goto err_dnld_fw;
559 }
560
561 memset(&fw, 0, sizeof(struct mwifiex_fw_image));
562 adapter->firmware = firmware;
563 fw.fw_buf = (u8 *) adapter->firmware->data;
564 fw.fw_len = adapter->firmware->size;
565
566 if (adapter->if_ops.dnld_fw) {
567 ret = adapter->if_ops.dnld_fw(adapter, &fw);
568 } else {
569 ret = mwifiex_dnld_fw(adapter, &fw);
570 }
571
572 if (ret == -1)
573 goto err_dnld_fw;
574
575 mwifiex_dbg(adapter, MSG, "WLAN FW is active\n");
576
577 if (cal_data_cfg) {
578 if ((request_firmware(&adapter->cal_data, cal_data_cfg,
579 adapter->dev)) < 0)
580 mwifiex_dbg(adapter, ERROR,
581 "Cal data request_firmware() failed\n");
582 }
583
584 /* enable host interrupt after fw dnld is successful */
585 if (adapter->if_ops.enable_int) {
586 if (adapter->if_ops.enable_int(adapter))
587 goto err_dnld_fw;
588 }
589
590 adapter->init_wait_q_woken = false;
591 ret = mwifiex_init_fw(adapter);
592 if (ret == -1) {
593 goto err_init_fw;
594 } else if (!ret) {
595 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
596 goto done;
597 }
598 /* Wait for mwifiex_init to complete */
599 if (!adapter->mfg_mode) {
600 wait_event_interruptible(adapter->init_wait_q,
601 adapter->init_wait_q_woken);
602 if (adapter->hw_status != MWIFIEX_HW_STATUS_READY)
603 goto err_init_fw;
604 }
605
606 if (!adapter->wiphy) {
607 if (mwifiex_register_cfg80211(adapter)) {
608 mwifiex_dbg(adapter, ERROR,
609 "cannot register with cfg80211\n");
610 goto err_init_fw;
611 }
612 }
613
614 if (mwifiex_init_channel_scan_gap(adapter)) {
615 mwifiex_dbg(adapter, ERROR,
616 "could not init channel stats table\n");
617 goto err_init_chan_scan;
618 }
619
620 if (driver_mode) {
621 driver_mode &= MWIFIEX_DRIVER_MODE_BITMASK;
622 driver_mode |= MWIFIEX_DRIVER_MODE_STA;
623 }
624
625 rtnl_lock();
626 wiphy_lock(adapter->wiphy);
627 /* Create station interface by default */
628 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM,
629 NL80211_IFTYPE_STATION, NULL);
630 if (IS_ERR(wdev)) {
631 mwifiex_dbg(adapter, ERROR,
632 "cannot create default STA interface\n");
633 wiphy_unlock(adapter->wiphy);
634 rtnl_unlock();
635 goto err_add_intf;
636 }
637
638 if (driver_mode & MWIFIEX_DRIVER_MODE_UAP) {
639 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM,
640 NL80211_IFTYPE_AP, NULL);
641 if (IS_ERR(wdev)) {
642 mwifiex_dbg(adapter, ERROR,
643 "cannot create AP interface\n");
644 wiphy_unlock(adapter->wiphy);
645 rtnl_unlock();
646 goto err_add_intf;
647 }
648 }
649
650 if (driver_mode & MWIFIEX_DRIVER_MODE_P2P) {
651 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", NET_NAME_ENUM,
652 NL80211_IFTYPE_P2P_CLIENT, NULL);
653 if (IS_ERR(wdev)) {
654 mwifiex_dbg(adapter, ERROR,
655 "cannot create p2p client interface\n");
656 wiphy_unlock(adapter->wiphy);
657 rtnl_unlock();
658 goto err_add_intf;
659 }
660 }
661 wiphy_unlock(adapter->wiphy);
662 rtnl_unlock();
663
664 mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);
665 mwifiex_dbg(adapter, MSG, "driver_version = %s\n", fmt);
666 adapter->is_up = true;
667 goto done;
668
669 err_add_intf:
670 vfree(adapter->chan_stats);
671 err_init_chan_scan:
672 wiphy_unregister(adapter->wiphy);
673 wiphy_free(adapter->wiphy);
674 err_init_fw:
675 if (adapter->if_ops.disable_int)
676 adapter->if_ops.disable_int(adapter);
677 err_dnld_fw:
678 mwifiex_dbg(adapter, ERROR,
679 "info: %s: unregister device\n", __func__);
680 if (adapter->if_ops.unregister_dev)
681 adapter->if_ops.unregister_dev(adapter);
682
683 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
684 mwifiex_terminate_workqueue(adapter);
685
686 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
687 pr_debug("info: %s: shutdown mwifiex\n", __func__);
688 mwifiex_shutdown_drv(adapter);
689 mwifiex_free_cmd_buffers(adapter);
690 }
691
692 init_failed = true;
693 done:
694 if (adapter->firmware) {
695 release_firmware(adapter->firmware);
696 adapter->firmware = NULL;
697 }
698 if (init_failed) {
699 if (adapter->irq_wakeup >= 0)
700 device_init_wakeup(adapter->dev, false);
701 mwifiex_free_adapter(adapter);
702 }
703 /* Tell all current and future waiters we're finished */
704 complete_all(fw_done);
705
706 return init_failed ? -EIO : 0;
707 }
708
mwifiex_fw_dpc(const struct firmware * firmware,void * context)709 static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
710 {
711 _mwifiex_fw_dpc(firmware, context);
712 }
713
714 /*
715 * This function gets the firmware and (if called asynchronously) kicks off the
716 * HW init when done.
717 */
mwifiex_init_hw_fw(struct mwifiex_adapter * adapter,bool req_fw_nowait)718 static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter,
719 bool req_fw_nowait)
720 {
721 int ret;
722
723 /* Override default firmware with manufacturing one if
724 * manufacturing mode is enabled
725 */
726 if (mfg_mode)
727 strscpy(adapter->fw_name, MFG_FIRMWARE,
728 sizeof(adapter->fw_name));
729
730 if (req_fw_nowait) {
731 ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name,
732 adapter->dev, GFP_KERNEL, adapter,
733 mwifiex_fw_dpc);
734 } else {
735 ret = request_firmware(&adapter->firmware,
736 adapter->fw_name,
737 adapter->dev);
738 }
739
740 if (ret < 0)
741 mwifiex_dbg(adapter, ERROR, "request_firmware%s error %d\n",
742 req_fw_nowait ? "_nowait" : "", ret);
743 return ret;
744 }
745
746 /*
747 * CFG802.11 network device handler for open.
748 *
749 * Starts the data queue.
750 */
751 static int
mwifiex_open(struct net_device * dev)752 mwifiex_open(struct net_device *dev)
753 {
754 netif_carrier_off(dev);
755
756 return 0;
757 }
758
759 /*
760 * CFG802.11 network device handler for close.
761 */
762 static int
mwifiex_close(struct net_device * dev)763 mwifiex_close(struct net_device *dev)
764 {
765 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
766
767 if (priv->scan_request) {
768 struct cfg80211_scan_info info = {
769 .aborted = true,
770 };
771
772 mwifiex_dbg(priv->adapter, INFO,
773 "aborting scan on ndo_stop\n");
774 cfg80211_scan_done(priv->scan_request, &info);
775 priv->scan_request = NULL;
776 priv->scan_aborting = true;
777 }
778
779 if (priv->sched_scanning) {
780 mwifiex_dbg(priv->adapter, INFO,
781 "aborting bgscan on ndo_stop\n");
782 mwifiex_stop_bg_scan(priv);
783 cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
784 }
785
786 return 0;
787 }
788
789 static bool
mwifiex_bypass_tx_queue(struct mwifiex_private * priv,struct sk_buff * skb)790 mwifiex_bypass_tx_queue(struct mwifiex_private *priv,
791 struct sk_buff *skb)
792 {
793 struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
794
795 if (ntohs(eth_hdr->h_proto) == ETH_P_PAE ||
796 mwifiex_is_skb_mgmt_frame(skb) ||
797 (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
798 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
799 (ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) {
800 mwifiex_dbg(priv->adapter, DATA,
801 "bypass txqueue; eth type %#x, mgmt %d\n",
802 ntohs(eth_hdr->h_proto),
803 mwifiex_is_skb_mgmt_frame(skb));
804 if (eth_hdr->h_proto == htons(ETH_P_PAE))
805 mwifiex_dbg(priv->adapter, MSG,
806 "key: send EAPOL to %pM\n",
807 eth_hdr->h_dest);
808 return true;
809 }
810
811 return false;
812 }
813 /*
814 * Add buffer into wmm tx queue and queue work to transmit it.
815 */
mwifiex_queue_tx_pkt(struct mwifiex_private * priv,struct sk_buff * skb)816 int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)
817 {
818 struct netdev_queue *txq;
819 int index = mwifiex_1d_to_wmm_queue[skb->priority];
820
821 if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) {
822 txq = netdev_get_tx_queue(priv->netdev, index);
823 if (!netif_tx_queue_stopped(txq)) {
824 netif_tx_stop_queue(txq);
825 mwifiex_dbg(priv->adapter, DATA,
826 "stop queue: %d\n", index);
827 }
828 }
829
830 if (mwifiex_bypass_tx_queue(priv, skb)) {
831 atomic_inc(&priv->adapter->tx_pending);
832 atomic_inc(&priv->adapter->bypass_tx_pending);
833 mwifiex_wmm_add_buf_bypass_txqueue(priv, skb);
834 } else {
835 atomic_inc(&priv->adapter->tx_pending);
836 mwifiex_wmm_add_buf_txqueue(priv, skb);
837 }
838
839 mwifiex_queue_main_work(priv->adapter);
840
841 return 0;
842 }
843
844 struct sk_buff *
mwifiex_clone_skb_for_tx_status(struct mwifiex_private * priv,struct sk_buff * skb,u8 flag,u64 * cookie)845 mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv,
846 struct sk_buff *skb, u8 flag, u64 *cookie)
847 {
848 struct sk_buff *orig_skb = skb;
849 struct mwifiex_txinfo *tx_info, *orig_tx_info;
850
851 skb = skb_clone(skb, GFP_ATOMIC);
852 if (skb) {
853 int id;
854
855 spin_lock_bh(&priv->ack_status_lock);
856 id = idr_alloc(&priv->ack_status_frames, orig_skb,
857 1, 0x10, GFP_ATOMIC);
858 spin_unlock_bh(&priv->ack_status_lock);
859
860 if (id >= 0) {
861 tx_info = MWIFIEX_SKB_TXCB(skb);
862 tx_info->ack_frame_id = id;
863 tx_info->flags |= flag;
864 orig_tx_info = MWIFIEX_SKB_TXCB(orig_skb);
865 orig_tx_info->ack_frame_id = id;
866 orig_tx_info->flags |= flag;
867
868 if (flag == MWIFIEX_BUF_FLAG_ACTION_TX_STATUS && cookie)
869 orig_tx_info->cookie = *cookie;
870
871 } else if (skb_shared(skb)) {
872 kfree_skb(orig_skb);
873 } else {
874 kfree_skb(skb);
875 skb = orig_skb;
876 }
877 } else {
878 /* couldn't clone -- lose tx status ... */
879 skb = orig_skb;
880 }
881
882 return skb;
883 }
884
885 /*
886 * CFG802.11 network device handler for data transmission.
887 */
888 static netdev_tx_t
mwifiex_hard_start_xmit(struct sk_buff * skb,struct net_device * dev)889 mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
890 {
891 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
892 struct sk_buff *new_skb;
893 struct mwifiex_txinfo *tx_info;
894 bool multicast;
895
896 mwifiex_dbg(priv->adapter, DATA,
897 "data: %lu BSS(%d-%d): Data <= kernel\n",
898 jiffies, priv->bss_type, priv->bss_num);
899
900 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &priv->adapter->work_flags)) {
901 kfree_skb(skb);
902 priv->stats.tx_dropped++;
903 return 0;
904 }
905 if (!skb->len || (skb->len > ETH_FRAME_LEN)) {
906 mwifiex_dbg(priv->adapter, ERROR,
907 "Tx: bad skb len %d\n", skb->len);
908 kfree_skb(skb);
909 priv->stats.tx_dropped++;
910 return 0;
911 }
912 if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) {
913 mwifiex_dbg(priv->adapter, DATA,
914 "data: Tx: insufficient skb headroom %d\n",
915 skb_headroom(skb));
916 /* Insufficient skb headroom - allocate a new skb */
917 new_skb =
918 skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
919 if (unlikely(!new_skb)) {
920 mwifiex_dbg(priv->adapter, ERROR,
921 "Tx: cannot alloca new_skb\n");
922 kfree_skb(skb);
923 priv->stats.tx_dropped++;
924 return 0;
925 }
926 kfree_skb(skb);
927 skb = new_skb;
928 mwifiex_dbg(priv->adapter, INFO,
929 "info: new skb headroomd %d\n",
930 skb_headroom(skb));
931 }
932
933 tx_info = MWIFIEX_SKB_TXCB(skb);
934 memset(tx_info, 0, sizeof(*tx_info));
935 tx_info->bss_num = priv->bss_num;
936 tx_info->bss_type = priv->bss_type;
937 tx_info->pkt_len = skb->len;
938
939 multicast = is_multicast_ether_addr(skb->data);
940
941 if (unlikely(!multicast && skb->sk &&
942 skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS &&
943 priv->adapter->fw_api_ver == MWIFIEX_FW_V15))
944 skb = mwifiex_clone_skb_for_tx_status(priv,
945 skb,
946 MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS, NULL);
947
948 /* Record the current time the packet was queued; used to
949 * determine the amount of time the packet was queued in
950 * the driver before it was sent to the firmware.
951 * The delay is then sent along with the packet to the
952 * firmware for aggregate delay calculation for stats and
953 * MSDU lifetime expiry.
954 */
955 __net_timestamp(skb);
956
957 if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
958 priv->bss_type == MWIFIEX_BSS_TYPE_STA &&
959 !ether_addr_equal_unaligned(priv->cfg_bssid, skb->data)) {
960 if (priv->adapter->auto_tdls && priv->check_tdls_tx)
961 mwifiex_tdls_check_tx(priv, skb);
962 }
963
964 mwifiex_queue_tx_pkt(priv, skb);
965
966 return 0;
967 }
968
mwifiex_set_mac_address(struct mwifiex_private * priv,struct net_device * dev,bool external,u8 * new_mac)969 int mwifiex_set_mac_address(struct mwifiex_private *priv,
970 struct net_device *dev, bool external,
971 u8 *new_mac)
972 {
973 int ret;
974 u64 mac_addr, old_mac_addr;
975
976 old_mac_addr = ether_addr_to_u64(priv->curr_addr);
977
978 if (external) {
979 mac_addr = ether_addr_to_u64(new_mac);
980 } else {
981 /* Internal mac address change */
982 if (priv->bss_type == MWIFIEX_BSS_TYPE_ANY)
983 return -EOPNOTSUPP;
984
985 mac_addr = old_mac_addr;
986
987 if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) {
988 mac_addr |= BIT_ULL(MWIFIEX_MAC_LOCAL_ADMIN_BIT);
989 mac_addr += priv->bss_num;
990 } else if (priv->adapter->priv[0] != priv) {
991 /* Set mac address based on bss_type/bss_num */
992 mac_addr ^= BIT_ULL(priv->bss_type + 8);
993 mac_addr += priv->bss_num;
994 }
995 }
996
997 u64_to_ether_addr(mac_addr, priv->curr_addr);
998
999 /* Send request to firmware */
1000 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
1001 HostCmd_ACT_GEN_SET, 0, NULL, true);
1002
1003 if (ret) {
1004 u64_to_ether_addr(old_mac_addr, priv->curr_addr);
1005 mwifiex_dbg(priv->adapter, ERROR,
1006 "set mac address failed: ret=%d\n", ret);
1007 return ret;
1008 }
1009
1010 eth_hw_addr_set(dev, priv->curr_addr);
1011 return 0;
1012 }
1013
1014 /* CFG802.11 network device handler for setting MAC address.
1015 */
1016 static int
mwifiex_ndo_set_mac_address(struct net_device * dev,void * addr)1017 mwifiex_ndo_set_mac_address(struct net_device *dev, void *addr)
1018 {
1019 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1020 struct sockaddr *hw_addr = addr;
1021
1022 return mwifiex_set_mac_address(priv, dev, true, hw_addr->sa_data);
1023 }
1024
1025 /*
1026 * CFG802.11 network device handler for setting multicast list.
1027 */
mwifiex_set_multicast_list(struct net_device * dev)1028 static void mwifiex_set_multicast_list(struct net_device *dev)
1029 {
1030 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1031 struct mwifiex_multicast_list mcast_list;
1032
1033 if (dev->flags & IFF_PROMISC) {
1034 mcast_list.mode = MWIFIEX_PROMISC_MODE;
1035 } else if (dev->flags & IFF_ALLMULTI ||
1036 netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) {
1037 mcast_list.mode = MWIFIEX_ALL_MULTI_MODE;
1038 } else {
1039 mcast_list.mode = MWIFIEX_MULTICAST_MODE;
1040 mcast_list.num_multicast_addr =
1041 mwifiex_copy_mcast_addr(&mcast_list, dev);
1042 }
1043 mwifiex_request_set_multicast_list(priv, &mcast_list);
1044 }
1045
1046 /*
1047 * CFG802.11 network device handler for transmission timeout.
1048 */
1049 static void
mwifiex_tx_timeout(struct net_device * dev,unsigned int txqueue)1050 mwifiex_tx_timeout(struct net_device *dev, unsigned int txqueue)
1051 {
1052 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1053
1054 priv->num_tx_timeout++;
1055 priv->tx_timeout_cnt++;
1056 mwifiex_dbg(priv->adapter, ERROR,
1057 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
1058 jiffies, priv->tx_timeout_cnt, priv->bss_type,
1059 priv->bss_num);
1060 mwifiex_set_trans_start(dev);
1061
1062 if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&
1063 priv->adapter->if_ops.card_reset) {
1064 mwifiex_dbg(priv->adapter, ERROR,
1065 "tx_timeout_cnt exceeds threshold.\t"
1066 "Triggering card reset!\n");
1067 priv->adapter->if_ops.card_reset(priv->adapter);
1068 }
1069 }
1070
mwifiex_multi_chan_resync(struct mwifiex_adapter * adapter)1071 void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter)
1072 {
1073 struct usb_card_rec *card = adapter->card;
1074 struct mwifiex_private *priv;
1075 u16 tx_buf_size;
1076 int i, ret;
1077
1078 card->mc_resync_flag = true;
1079 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
1080 if (atomic_read(&card->port[i].tx_data_urb_pending)) {
1081 mwifiex_dbg(adapter, WARN, "pending data urb in sys\n");
1082 return;
1083 }
1084 }
1085
1086 card->mc_resync_flag = false;
1087 tx_buf_size = 0xffff;
1088 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1089 ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF,
1090 HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false);
1091 if (ret)
1092 mwifiex_dbg(adapter, ERROR,
1093 "send reconfig tx buf size cmd err\n");
1094 }
1095 EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync);
1096
mwifiex_upload_device_dump(struct mwifiex_adapter * adapter)1097 void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter)
1098 {
1099 /* Dump all the memory data into single file, a userspace script will
1100 * be used to split all the memory data to multiple files
1101 */
1102 mwifiex_dbg(adapter, MSG,
1103 "== mwifiex dump information to /sys/class/devcoredump start\n");
1104 dev_coredumpv(adapter->dev, adapter->devdump_data, adapter->devdump_len,
1105 GFP_KERNEL);
1106 mwifiex_dbg(adapter, MSG,
1107 "== mwifiex dump information to /sys/class/devcoredump end\n");
1108
1109 /* Device dump data will be freed in device coredump release function
1110 * after 5 min. Here reset adapter->devdump_data and ->devdump_len
1111 * to avoid it been accidentally reused.
1112 */
1113 adapter->devdump_data = NULL;
1114 adapter->devdump_len = 0;
1115 }
1116 EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump);
1117
mwifiex_drv_info_dump(struct mwifiex_adapter * adapter)1118 void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter)
1119 {
1120 char *p;
1121 char drv_version[64];
1122 struct usb_card_rec *cardp;
1123 struct sdio_mmc_card *sdio_card;
1124 struct mwifiex_private *priv;
1125 int i, idx;
1126 struct netdev_queue *txq;
1127 struct mwifiex_debug_info *debug_info;
1128
1129 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n");
1130
1131 p = adapter->devdump_data;
1132 strcpy(p, "========Start dump driverinfo========\n");
1133 p += strlen("========Start dump driverinfo========\n");
1134 p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
1135
1136 mwifiex_drv_get_driver_version(adapter, drv_version,
1137 sizeof(drv_version) - 1);
1138 p += sprintf(p, "driver_version = %s\n", drv_version);
1139
1140 if (adapter->iface_type == MWIFIEX_USB) {
1141 cardp = (struct usb_card_rec *)adapter->card;
1142 p += sprintf(p, "tx_cmd_urb_pending = %d\n",
1143 atomic_read(&cardp->tx_cmd_urb_pending));
1144 p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n",
1145 atomic_read(&cardp->port[0].tx_data_urb_pending));
1146 p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n",
1147 atomic_read(&cardp->port[1].tx_data_urb_pending));
1148 p += sprintf(p, "rx_cmd_urb_pending = %d\n",
1149 atomic_read(&cardp->rx_cmd_urb_pending));
1150 p += sprintf(p, "rx_data_urb_pending = %d\n",
1151 atomic_read(&cardp->rx_data_urb_pending));
1152 }
1153
1154 p += sprintf(p, "tx_pending = %d\n",
1155 atomic_read(&adapter->tx_pending));
1156 p += sprintf(p, "rx_pending = %d\n",
1157 atomic_read(&adapter->rx_pending));
1158
1159 if (adapter->iface_type == MWIFIEX_SDIO) {
1160 sdio_card = (struct sdio_mmc_card *)adapter->card;
1161 p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
1162 sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port);
1163 p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
1164 sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port);
1165 }
1166
1167 for (i = 0; i < adapter->priv_num; i++) {
1168 if (!adapter->priv[i]->netdev)
1169 continue;
1170 priv = adapter->priv[i];
1171 p += sprintf(p, "\n[interface : \"%s\"]\n",
1172 priv->netdev->name);
1173 p += sprintf(p, "wmm_tx_pending[0] = %d\n",
1174 atomic_read(&priv->wmm_tx_pending[0]));
1175 p += sprintf(p, "wmm_tx_pending[1] = %d\n",
1176 atomic_read(&priv->wmm_tx_pending[1]));
1177 p += sprintf(p, "wmm_tx_pending[2] = %d\n",
1178 atomic_read(&priv->wmm_tx_pending[2]));
1179 p += sprintf(p, "wmm_tx_pending[3] = %d\n",
1180 atomic_read(&priv->wmm_tx_pending[3]));
1181 p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ?
1182 "Disconnected" : "Connected");
1183 p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev)
1184 ? "on" : "off"));
1185 for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) {
1186 txq = netdev_get_tx_queue(priv->netdev, idx);
1187 p += sprintf(p, "tx queue %d:%s ", idx,
1188 netif_tx_queue_stopped(txq) ?
1189 "stopped" : "started");
1190 }
1191 p += sprintf(p, "\n%s: num_tx_timeout = %d\n",
1192 priv->netdev->name, priv->num_tx_timeout);
1193 }
1194
1195 if (adapter->iface_type == MWIFIEX_SDIO ||
1196 adapter->iface_type == MWIFIEX_PCIE) {
1197 p += sprintf(p, "\n=== %s register dump===\n",
1198 adapter->iface_type == MWIFIEX_SDIO ?
1199 "SDIO" : "PCIE");
1200 if (adapter->if_ops.reg_dump)
1201 p += adapter->if_ops.reg_dump(adapter, p);
1202 }
1203 p += sprintf(p, "\n=== more debug information\n");
1204 debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);
1205 if (debug_info) {
1206 for (i = 0; i < adapter->priv_num; i++) {
1207 if (!adapter->priv[i]->netdev)
1208 continue;
1209 priv = adapter->priv[i];
1210 mwifiex_get_debug_info(priv, debug_info);
1211 p += mwifiex_debug_info_to_buffer(priv, p, debug_info);
1212 break;
1213 }
1214 kfree(debug_info);
1215 }
1216
1217 strcpy(p, "\n========End dump========\n");
1218 p += strlen("\n========End dump========\n");
1219 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n");
1220 adapter->devdump_len = p - (char *)adapter->devdump_data;
1221 }
1222 EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump);
1223
mwifiex_prepare_fw_dump_info(struct mwifiex_adapter * adapter)1224 void mwifiex_prepare_fw_dump_info(struct mwifiex_adapter *adapter)
1225 {
1226 u8 idx;
1227 char *fw_dump_ptr;
1228 u32 dump_len = 0;
1229
1230 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1231 struct memory_type_mapping *entry =
1232 &adapter->mem_type_mapping_tbl[idx];
1233
1234 if (entry->mem_ptr) {
1235 dump_len += (strlen("========Start dump ") +
1236 strlen(entry->mem_name) +
1237 strlen("========\n") +
1238 (entry->mem_size + 1) +
1239 strlen("\n========End dump========\n"));
1240 }
1241 }
1242
1243 if (dump_len + 1 + adapter->devdump_len > MWIFIEX_FW_DUMP_SIZE) {
1244 /* Realloc in case buffer overflow */
1245 fw_dump_ptr = vzalloc(dump_len + 1 + adapter->devdump_len);
1246 mwifiex_dbg(adapter, MSG, "Realloc device dump data.\n");
1247 if (!fw_dump_ptr) {
1248 vfree(adapter->devdump_data);
1249 mwifiex_dbg(adapter, ERROR,
1250 "vzalloc devdump data failure!\n");
1251 return;
1252 }
1253
1254 memmove(fw_dump_ptr, adapter->devdump_data,
1255 adapter->devdump_len);
1256 vfree(adapter->devdump_data);
1257 adapter->devdump_data = fw_dump_ptr;
1258 }
1259
1260 fw_dump_ptr = (char *)adapter->devdump_data + adapter->devdump_len;
1261
1262 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1263 struct memory_type_mapping *entry =
1264 &adapter->mem_type_mapping_tbl[idx];
1265
1266 if (entry->mem_ptr) {
1267 strcpy(fw_dump_ptr, "========Start dump ");
1268 fw_dump_ptr += strlen("========Start dump ");
1269
1270 strcpy(fw_dump_ptr, entry->mem_name);
1271 fw_dump_ptr += strlen(entry->mem_name);
1272
1273 strcpy(fw_dump_ptr, "========\n");
1274 fw_dump_ptr += strlen("========\n");
1275
1276 memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1277 fw_dump_ptr += entry->mem_size;
1278
1279 strcpy(fw_dump_ptr, "\n========End dump========\n");
1280 fw_dump_ptr += strlen("\n========End dump========\n");
1281 }
1282 }
1283
1284 adapter->devdump_len = fw_dump_ptr - (char *)adapter->devdump_data;
1285
1286 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1287 struct memory_type_mapping *entry =
1288 &adapter->mem_type_mapping_tbl[idx];
1289
1290 vfree(entry->mem_ptr);
1291 entry->mem_ptr = NULL;
1292 entry->mem_size = 0;
1293 }
1294 }
1295 EXPORT_SYMBOL_GPL(mwifiex_prepare_fw_dump_info);
1296
1297 /*
1298 * CFG802.11 network device handler for statistics retrieval.
1299 */
mwifiex_get_stats(struct net_device * dev)1300 static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
1301 {
1302 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1303
1304 return &priv->stats;
1305 }
1306
1307 static u16
mwifiex_netdev_select_wmm_queue(struct net_device * dev,struct sk_buff * skb,struct net_device * sb_dev)1308 mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb,
1309 struct net_device *sb_dev)
1310 {
1311 skb->priority = cfg80211_classify8021d(skb, NULL);
1312 return mwifiex_1d_to_wmm_queue[skb->priority];
1313 }
1314
1315 /* Network device handlers */
1316 static const struct net_device_ops mwifiex_netdev_ops = {
1317 .ndo_open = mwifiex_open,
1318 .ndo_stop = mwifiex_close,
1319 .ndo_start_xmit = mwifiex_hard_start_xmit,
1320 .ndo_set_mac_address = mwifiex_ndo_set_mac_address,
1321 .ndo_validate_addr = eth_validate_addr,
1322 .ndo_tx_timeout = mwifiex_tx_timeout,
1323 .ndo_get_stats = mwifiex_get_stats,
1324 .ndo_set_rx_mode = mwifiex_set_multicast_list,
1325 .ndo_select_queue = mwifiex_netdev_select_wmm_queue,
1326 };
1327
1328 /*
1329 * This function initializes the private structure parameters.
1330 *
1331 * The following wait queues are initialized -
1332 * - IOCTL wait queue
1333 * - Command wait queue
1334 * - Statistics wait queue
1335 *
1336 * ...and the following default parameters are set -
1337 * - Current key index : Set to 0
1338 * - Rate index : Set to auto
1339 * - Media connected : Set to disconnected
1340 * - Adhoc link sensed : Set to false
1341 * - Nick name : Set to null
1342 * - Number of Tx timeout : Set to 0
1343 * - Device address : Set to current address
1344 * - Rx histogram statistc : Set to 0
1345 *
1346 * In addition, the CFG80211 work queue is also created.
1347 */
mwifiex_init_priv_params(struct mwifiex_private * priv,struct net_device * dev)1348 void mwifiex_init_priv_params(struct mwifiex_private *priv,
1349 struct net_device *dev)
1350 {
1351 dev->netdev_ops = &mwifiex_netdev_ops;
1352 dev->needs_free_netdev = true;
1353 /* Initialize private structure */
1354 priv->current_key_index = 0;
1355 priv->media_connected = false;
1356 memset(priv->mgmt_ie, 0,
1357 sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX);
1358 priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK;
1359 priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK;
1360 priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK;
1361 priv->gen_idx = MWIFIEX_AUTO_IDX_MASK;
1362 priv->num_tx_timeout = 0;
1363 if (is_valid_ether_addr(dev->dev_addr))
1364 ether_addr_copy(priv->curr_addr, dev->dev_addr);
1365 else
1366 ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr);
1367
1368 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
1369 GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
1370 priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL);
1371 if (priv->hist_data)
1372 mwifiex_hist_data_reset(priv);
1373 }
1374 }
1375
1376 /*
1377 * This function check if command is pending.
1378 */
is_command_pending(struct mwifiex_adapter * adapter)1379 int is_command_pending(struct mwifiex_adapter *adapter)
1380 {
1381 int is_cmd_pend_q_empty;
1382
1383 spin_lock_bh(&adapter->cmd_pending_q_lock);
1384 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
1385 spin_unlock_bh(&adapter->cmd_pending_q_lock);
1386
1387 return !is_cmd_pend_q_empty;
1388 }
1389
1390 /* This is the host mlme work queue function.
1391 * It handles the host mlme operations.
1392 */
mwifiex_host_mlme_work_queue(struct work_struct * work)1393 static void mwifiex_host_mlme_work_queue(struct work_struct *work)
1394 {
1395 struct mwifiex_adapter *adapter =
1396 container_of(work, struct mwifiex_adapter, host_mlme_work);
1397
1398 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1399 return;
1400
1401 /* Check for host mlme disconnection */
1402 if (adapter->host_mlme_link_lost) {
1403 if (adapter->priv_link_lost) {
1404 mwifiex_reset_connect_state(adapter->priv_link_lost,
1405 WLAN_REASON_DEAUTH_LEAVING,
1406 true);
1407 adapter->priv_link_lost = NULL;
1408 }
1409 adapter->host_mlme_link_lost = false;
1410 }
1411
1412 /* Check for host mlme Assoc Resp */
1413 if (adapter->assoc_resp_received) {
1414 mwifiex_process_assoc_resp(adapter);
1415 adapter->assoc_resp_received = false;
1416 }
1417 }
1418
1419 /*
1420 * This is the RX work queue function.
1421 *
1422 * It handles the RX operations.
1423 */
mwifiex_rx_work_queue(struct work_struct * work)1424 static void mwifiex_rx_work_queue(struct work_struct *work)
1425 {
1426 struct mwifiex_adapter *adapter =
1427 container_of(work, struct mwifiex_adapter, rx_work);
1428
1429 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1430 return;
1431 mwifiex_process_rx(adapter);
1432 }
1433
1434 /*
1435 * This is the main work queue function.
1436 *
1437 * It handles the main process, which in turn handles the complete
1438 * driver operations.
1439 */
mwifiex_main_work_queue(struct work_struct * work)1440 static void mwifiex_main_work_queue(struct work_struct *work)
1441 {
1442 struct mwifiex_adapter *adapter =
1443 container_of(work, struct mwifiex_adapter, main_work);
1444
1445 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1446 return;
1447 mwifiex_main_process(adapter);
1448 }
1449
1450 /* Common teardown code used for both device removal and reset */
mwifiex_uninit_sw(struct mwifiex_adapter * adapter)1451 static void mwifiex_uninit_sw(struct mwifiex_adapter *adapter)
1452 {
1453 struct mwifiex_private *priv;
1454 int i;
1455
1456 /* We can no longer handle interrupts once we start doing the teardown
1457 * below.
1458 */
1459 if (adapter->if_ops.disable_int)
1460 adapter->if_ops.disable_int(adapter);
1461
1462 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1463 mwifiex_terminate_workqueue(adapter);
1464 adapter->int_status = 0;
1465
1466 /* Stop data */
1467 for (i = 0; i < adapter->priv_num; i++) {
1468 priv = adapter->priv[i];
1469 if (priv->netdev) {
1470 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
1471 if (netif_carrier_ok(priv->netdev))
1472 netif_carrier_off(priv->netdev);
1473 netif_device_detach(priv->netdev);
1474 }
1475 }
1476
1477 mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n");
1478 mwifiex_shutdown_drv(adapter);
1479 mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n");
1480
1481 if (atomic_read(&adapter->rx_pending) ||
1482 atomic_read(&adapter->tx_pending) ||
1483 atomic_read(&adapter->cmd_pending)) {
1484 mwifiex_dbg(adapter, ERROR,
1485 "rx_pending=%d, tx_pending=%d,\t"
1486 "cmd_pending=%d\n",
1487 atomic_read(&adapter->rx_pending),
1488 atomic_read(&adapter->tx_pending),
1489 atomic_read(&adapter->cmd_pending));
1490 }
1491
1492 for (i = 0; i < adapter->priv_num; i++) {
1493 priv = adapter->priv[i];
1494 rtnl_lock();
1495 if (priv->netdev &&
1496 priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED) {
1497 /*
1498 * Close the netdev now, because if we do it later, the
1499 * netdev notifiers will need to acquire the wiphy lock
1500 * again --> deadlock.
1501 */
1502 dev_close(priv->wdev.netdev);
1503 wiphy_lock(adapter->wiphy);
1504 mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
1505 wiphy_unlock(adapter->wiphy);
1506 }
1507 rtnl_unlock();
1508 }
1509
1510 wiphy_unregister(adapter->wiphy);
1511 wiphy_free(adapter->wiphy);
1512 adapter->wiphy = NULL;
1513
1514 vfree(adapter->chan_stats);
1515 mwifiex_free_cmd_buffers(adapter);
1516 }
1517
1518 /*
1519 * This function can be used for shutting down the adapter SW.
1520 */
mwifiex_shutdown_sw(struct mwifiex_adapter * adapter)1521 int mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
1522 {
1523 struct mwifiex_private *priv;
1524
1525 if (!adapter)
1526 return 0;
1527
1528 wait_for_completion(adapter->fw_done);
1529 /* Caller should ensure we aren't suspending while this happens */
1530 reinit_completion(adapter->fw_done);
1531
1532 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1533 mwifiex_deauthenticate(priv, NULL);
1534
1535 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
1536
1537 mwifiex_uninit_sw(adapter);
1538 adapter->is_up = false;
1539
1540 if (adapter->if_ops.down_dev)
1541 adapter->if_ops.down_dev(adapter);
1542
1543 return 0;
1544 }
1545 EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw);
1546
1547 /* This function can be used for reinitting the adapter SW. Required
1548 * code is extracted from mwifiex_add_card()
1549 */
1550 int
mwifiex_reinit_sw(struct mwifiex_adapter * adapter)1551 mwifiex_reinit_sw(struct mwifiex_adapter *adapter)
1552 {
1553 int ret;
1554
1555 mwifiex_init_lock_list(adapter);
1556 if (adapter->if_ops.up_dev)
1557 adapter->if_ops.up_dev(adapter);
1558
1559 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1560 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1561 init_waitqueue_head(&adapter->init_wait_q);
1562 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
1563 adapter->hs_activated = false;
1564 clear_bit(MWIFIEX_IS_CMD_TIMEDOUT, &adapter->work_flags);
1565 init_waitqueue_head(&adapter->hs_activate_wait_q);
1566 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1567 adapter->cmd_wait_q.status = 0;
1568 adapter->scan_wait_q_woken = false;
1569
1570 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1571 adapter->rx_work_enabled = true;
1572
1573 adapter->workqueue =
1574 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1575 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0);
1576 if (!adapter->workqueue)
1577 goto err_kmalloc;
1578
1579 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1580
1581 if (adapter->rx_work_enabled) {
1582 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1583 WQ_HIGHPRI |
1584 WQ_MEM_RECLAIM |
1585 WQ_UNBOUND, 0);
1586 if (!adapter->rx_workqueue)
1587 goto err_kmalloc;
1588 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1589 }
1590
1591 if (adapter->host_mlme_enabled) {
1592 adapter->host_mlme_workqueue =
1593 alloc_workqueue("MWIFIEX_HOST_MLME_WORK_QUEUE",
1594 WQ_HIGHPRI |
1595 WQ_MEM_RECLAIM |
1596 WQ_UNBOUND, 0);
1597 if (!adapter->host_mlme_workqueue)
1598 goto err_kmalloc;
1599 INIT_WORK(&adapter->host_mlme_work,
1600 mwifiex_host_mlme_work_queue);
1601 }
1602
1603 /* Register the device. Fill up the private data structure with
1604 * relevant information from the card. Some code extracted from
1605 * mwifiex_register_dev()
1606 */
1607 mwifiex_dbg(adapter, INFO, "%s, mwifiex_init_hw_fw()...\n", __func__);
1608
1609 if (mwifiex_init_hw_fw(adapter, false)) {
1610 mwifiex_dbg(adapter, ERROR,
1611 "%s: firmware init failed\n", __func__);
1612 goto err_init_fw;
1613 }
1614
1615 /* _mwifiex_fw_dpc() does its own cleanup */
1616 ret = _mwifiex_fw_dpc(adapter->firmware, adapter);
1617 if (ret) {
1618 pr_err("Failed to bring up adapter: %d\n", ret);
1619 return ret;
1620 }
1621 mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
1622
1623 return 0;
1624
1625 err_init_fw:
1626 mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__);
1627 if (adapter->if_ops.unregister_dev)
1628 adapter->if_ops.unregister_dev(adapter);
1629
1630 err_kmalloc:
1631 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1632 mwifiex_terminate_workqueue(adapter);
1633 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1634 mwifiex_dbg(adapter, ERROR,
1635 "info: %s: shutdown mwifiex\n", __func__);
1636 mwifiex_shutdown_drv(adapter);
1637 mwifiex_free_cmd_buffers(adapter);
1638 }
1639
1640 complete_all(adapter->fw_done);
1641 mwifiex_dbg(adapter, INFO, "%s, error\n", __func__);
1642
1643 return -1;
1644 }
1645 EXPORT_SYMBOL_GPL(mwifiex_reinit_sw);
1646
mwifiex_irq_wakeup_handler(int irq,void * priv)1647 static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv)
1648 {
1649 struct mwifiex_adapter *adapter = priv;
1650
1651 dev_dbg(adapter->dev, "%s: wake by wifi", __func__);
1652 adapter->wake_by_wifi = true;
1653 disable_irq_nosync(irq);
1654
1655 /* Notify PM core we are wakeup source */
1656 pm_wakeup_event(adapter->dev, 0);
1657 pm_system_wakeup();
1658
1659 return IRQ_HANDLED;
1660 }
1661
mwifiex_probe_of(struct mwifiex_adapter * adapter)1662 static void mwifiex_probe_of(struct mwifiex_adapter *adapter)
1663 {
1664 int ret;
1665 struct device *dev = adapter->dev;
1666
1667 if (!dev->of_node)
1668 goto err_exit;
1669
1670 adapter->dt_node = dev->of_node;
1671 adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0);
1672 if (!adapter->irq_wakeup) {
1673 dev_dbg(dev, "fail to parse irq_wakeup from device tree\n");
1674 goto err_exit;
1675 }
1676
1677 ret = devm_request_irq(dev, adapter->irq_wakeup,
1678 mwifiex_irq_wakeup_handler,
1679 IRQF_TRIGGER_LOW | IRQF_NO_AUTOEN,
1680 "wifi_wake", adapter);
1681 if (ret) {
1682 dev_err(dev, "Failed to request irq_wakeup %d (%d)\n",
1683 adapter->irq_wakeup, ret);
1684 goto err_exit;
1685 }
1686
1687 if (device_init_wakeup(dev, true)) {
1688 dev_err(dev, "fail to init wakeup for mwifiex\n");
1689 goto err_exit;
1690 }
1691 return;
1692
1693 err_exit:
1694 adapter->irq_wakeup = -1;
1695 }
1696
1697 /*
1698 * This function adds the card.
1699 *
1700 * This function follows the following major steps to set up the device -
1701 * - Initialize software. This includes probing the card, registering
1702 * the interface operations table, and allocating/initializing the
1703 * adapter structure
1704 * - Set up the netlink socket
1705 * - Create and start the main work queue
1706 * - Register the device
1707 * - Initialize firmware and hardware
1708 * - Add logical interfaces
1709 */
1710 int
mwifiex_add_card(void * card,struct completion * fw_done,const struct mwifiex_if_ops * if_ops,u8 iface_type,struct device * dev)1711 mwifiex_add_card(void *card, struct completion *fw_done,
1712 const struct mwifiex_if_ops *if_ops, u8 iface_type,
1713 struct device *dev)
1714 {
1715 struct mwifiex_adapter *adapter;
1716
1717 if (mwifiex_register(card, dev, if_ops, (void **)&adapter)) {
1718 pr_err("%s: software init failed\n", __func__);
1719 goto err_init_sw;
1720 }
1721
1722 mwifiex_probe_of(adapter);
1723
1724 adapter->iface_type = iface_type;
1725 adapter->fw_done = fw_done;
1726
1727 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1728 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1729 init_waitqueue_head(&adapter->init_wait_q);
1730 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
1731 adapter->hs_activated = false;
1732 init_waitqueue_head(&adapter->hs_activate_wait_q);
1733 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1734 adapter->cmd_wait_q.status = 0;
1735 adapter->scan_wait_q_woken = false;
1736
1737 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1738 adapter->rx_work_enabled = true;
1739
1740 adapter->workqueue =
1741 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1742 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0);
1743 if (!adapter->workqueue)
1744 goto err_kmalloc;
1745
1746 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1747
1748 if (adapter->rx_work_enabled) {
1749 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1750 WQ_HIGHPRI |
1751 WQ_MEM_RECLAIM |
1752 WQ_UNBOUND, 0);
1753 if (!adapter->rx_workqueue)
1754 goto err_kmalloc;
1755
1756 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1757 }
1758
1759 /* Register the device. Fill up the private data structure with relevant
1760 information from the card. */
1761 if (adapter->if_ops.register_dev(adapter)) {
1762 pr_err("%s: failed to register mwifiex device\n", __func__);
1763 goto err_registerdev;
1764 }
1765
1766 if (adapter->host_mlme_enabled) {
1767 adapter->host_mlme_workqueue =
1768 alloc_workqueue("MWIFIEX_HOST_MLME_WORK_QUEUE",
1769 WQ_HIGHPRI |
1770 WQ_MEM_RECLAIM |
1771 WQ_UNBOUND, 0);
1772 if (!adapter->host_mlme_workqueue)
1773 goto err_kmalloc;
1774 INIT_WORK(&adapter->host_mlme_work,
1775 mwifiex_host_mlme_work_queue);
1776 }
1777
1778 if (mwifiex_init_hw_fw(adapter, true)) {
1779 pr_err("%s: firmware init failed\n", __func__);
1780 goto err_init_fw;
1781 }
1782
1783 return 0;
1784
1785 err_init_fw:
1786 pr_debug("info: %s: unregister device\n", __func__);
1787 if (adapter->if_ops.unregister_dev)
1788 adapter->if_ops.unregister_dev(adapter);
1789 err_registerdev:
1790 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1791 mwifiex_terminate_workqueue(adapter);
1792 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1793 pr_debug("info: %s: shutdown mwifiex\n", __func__);
1794 mwifiex_shutdown_drv(adapter);
1795 mwifiex_free_cmd_buffers(adapter);
1796 }
1797 err_kmalloc:
1798 if (adapter->irq_wakeup >= 0)
1799 device_init_wakeup(adapter->dev, false);
1800 mwifiex_free_adapter(adapter);
1801
1802 err_init_sw:
1803
1804 return -1;
1805 }
1806 EXPORT_SYMBOL_GPL(mwifiex_add_card);
1807
1808 /*
1809 * This function removes the card.
1810 *
1811 * This function follows the following major steps to remove the device -
1812 * - Stop data traffic
1813 * - Shutdown firmware
1814 * - Remove the logical interfaces
1815 * - Terminate the work queue
1816 * - Unregister the device
1817 * - Free the adapter structure
1818 */
mwifiex_remove_card(struct mwifiex_adapter * adapter)1819 int mwifiex_remove_card(struct mwifiex_adapter *adapter)
1820 {
1821 if (!adapter)
1822 return 0;
1823
1824 if (adapter->is_up)
1825 mwifiex_uninit_sw(adapter);
1826
1827 if (adapter->irq_wakeup >= 0)
1828 device_init_wakeup(adapter->dev, false);
1829
1830 /* Unregister device */
1831 mwifiex_dbg(adapter, INFO,
1832 "info: unregister device\n");
1833 if (adapter->if_ops.unregister_dev)
1834 adapter->if_ops.unregister_dev(adapter);
1835 /* Free adapter structure */
1836 mwifiex_dbg(adapter, INFO,
1837 "info: free adapter\n");
1838 mwifiex_free_adapter(adapter);
1839
1840 return 0;
1841 }
1842 EXPORT_SYMBOL_GPL(mwifiex_remove_card);
1843
_mwifiex_dbg(const struct mwifiex_adapter * adapter,int mask,const char * fmt,...)1844 void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
1845 const char *fmt, ...)
1846 {
1847 struct va_format vaf;
1848 va_list args;
1849
1850 if (!(adapter->debug_mask & mask))
1851 return;
1852
1853 va_start(args, fmt);
1854
1855 vaf.fmt = fmt;
1856 vaf.va = &args;
1857
1858 if (adapter->dev)
1859 dev_info(adapter->dev, "%pV", &vaf);
1860 else
1861 pr_info("%pV", &vaf);
1862
1863 va_end(args);
1864 }
1865 EXPORT_SYMBOL_GPL(_mwifiex_dbg);
1866
1867 /*
1868 * This function initializes the module.
1869 *
1870 * The debug FS is also initialized if configured.
1871 */
1872 static int
mwifiex_init_module(void)1873 mwifiex_init_module(void)
1874 {
1875 #ifdef CONFIG_DEBUG_FS
1876 mwifiex_debugfs_init();
1877 #endif
1878 return 0;
1879 }
1880
1881 /*
1882 * This function cleans up the module.
1883 *
1884 * The debug FS is removed if available.
1885 */
1886 static void
mwifiex_cleanup_module(void)1887 mwifiex_cleanup_module(void)
1888 {
1889 #ifdef CONFIG_DEBUG_FS
1890 mwifiex_debugfs_remove();
1891 #endif
1892 }
1893
1894 module_init(mwifiex_init_module);
1895 module_exit(mwifiex_cleanup_module);
1896
1897 MODULE_AUTHOR("Marvell International Ltd.");
1898 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION);
1899 MODULE_VERSION(VERSION);
1900 MODULE_LICENSE("GPL v2");
1901