1 /*
2 * NXP Wireless LAN device driver: major functions
3 *
4 * Copyright 2011-2020 NXP
5 *
6 * This software file (the "File") is distributed by NXP
7 * under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13 *
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
18 */
19
20 #include <linux/suspend.h>
21
22 #include "main.h"
23 #include "wmm.h"
24 #include "cfg80211.h"
25 #include "11n.h"
26
27 #define VERSION "1.0"
28 #define MFG_FIRMWARE "mwifiex_mfg.bin"
29
30 static unsigned int debug_mask = MWIFIEX_DEFAULT_DEBUG_MASK;
31 module_param(debug_mask, uint, 0);
32 MODULE_PARM_DESC(debug_mask, "bitmap for debug flags");
33
34 const char driver_version[] = "mwifiex " VERSION " (%s) ";
35 static char *cal_data_cfg;
36 module_param(cal_data_cfg, charp, 0);
37
38 static unsigned short driver_mode;
39 module_param(driver_mode, ushort, 0);
40 MODULE_PARM_DESC(driver_mode,
41 "station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7");
42
43 bool mfg_mode;
44 module_param(mfg_mode, bool, 0);
45 MODULE_PARM_DESC(mfg_mode, "manufacturing mode enable:1, disable:0");
46
47 bool aggr_ctrl;
48 module_param(aggr_ctrl, bool, 0000);
49 MODULE_PARM_DESC(aggr_ctrl, "usb tx aggregation enable:1, disable:0");
50
51 const u16 mwifiex_1d_to_wmm_queue[8] = { 1, 0, 0, 1, 2, 2, 3, 3 };
52
53 /*
54 * This function registers the device and performs all the necessary
55 * initializations.
56 *
57 * The following initialization operations are performed -
58 * - Allocate adapter structure
59 * - Save interface specific operations table in adapter
60 * - Call interface specific initialization routine
61 * - Allocate private structures
62 * - Set default adapter structure parameters
63 * - Initialize locks
64 *
65 * In case of any errors during inittialization, this function also ensures
66 * proper cleanup before exiting.
67 */
mwifiex_register(void * card,struct device * dev,struct mwifiex_if_ops * if_ops,void ** padapter)68 static int mwifiex_register(void *card, struct device *dev,
69 struct mwifiex_if_ops *if_ops, void **padapter)
70 {
71 struct mwifiex_adapter *adapter;
72 int i;
73
74 adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL);
75 if (!adapter)
76 return -ENOMEM;
77
78 *padapter = adapter;
79 adapter->dev = dev;
80 adapter->card = card;
81
82 /* Save interface specific operations in adapter */
83 memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));
84 adapter->debug_mask = debug_mask;
85
86 /* card specific initialization has been deferred until now .. */
87 if (adapter->if_ops.init_if)
88 if (adapter->if_ops.init_if(adapter))
89 goto error;
90
91 adapter->priv_num = 0;
92
93 for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) {
94 /* Allocate memory for private structure */
95 adapter->priv[i] =
96 kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL);
97 if (!adapter->priv[i])
98 goto error;
99
100 adapter->priv[i]->adapter = adapter;
101 adapter->priv_num++;
102 }
103 mwifiex_init_lock_list(adapter);
104
105 timer_setup(&adapter->cmd_timer, mwifiex_cmd_timeout_func, 0);
106
107 return 0;
108
109 error:
110 mwifiex_dbg(adapter, ERROR,
111 "info: leave mwifiex_register with error\n");
112
113 for (i = 0; i < adapter->priv_num; i++)
114 kfree(adapter->priv[i]);
115
116 kfree(adapter);
117
118 return -1;
119 }
120
121 /*
122 * This function unregisters the device and performs all the necessary
123 * cleanups.
124 *
125 * The following cleanup operations are performed -
126 * - Free the timers
127 * - Free beacon buffers
128 * - Free private structures
129 * - Free adapter structure
130 */
mwifiex_unregister(struct mwifiex_adapter * adapter)131 static int mwifiex_unregister(struct mwifiex_adapter *adapter)
132 {
133 s32 i;
134
135 if (adapter->if_ops.cleanup_if)
136 adapter->if_ops.cleanup_if(adapter);
137
138 del_timer_sync(&adapter->cmd_timer);
139
140 /* Free private structures */
141 for (i = 0; i < adapter->priv_num; i++) {
142 if (adapter->priv[i]) {
143 mwifiex_free_curr_bcn(adapter->priv[i]);
144 kfree(adapter->priv[i]);
145 }
146 }
147
148 if (adapter->nd_info) {
149 for (i = 0 ; i < adapter->nd_info->n_matches ; i++)
150 kfree(adapter->nd_info->matches[i]);
151 kfree(adapter->nd_info);
152 adapter->nd_info = NULL;
153 }
154
155 kfree(adapter->regd);
156
157 kfree(adapter);
158 return 0;
159 }
160
mwifiex_queue_main_work(struct mwifiex_adapter * adapter)161 void mwifiex_queue_main_work(struct mwifiex_adapter *adapter)
162 {
163 unsigned long flags;
164
165 spin_lock_irqsave(&adapter->main_proc_lock, flags);
166 if (adapter->mwifiex_processing) {
167 adapter->more_task_flag = true;
168 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
169 } else {
170 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
171 queue_work(adapter->workqueue, &adapter->main_work);
172 }
173 }
174 EXPORT_SYMBOL_GPL(mwifiex_queue_main_work);
175
mwifiex_queue_rx_work(struct mwifiex_adapter * adapter)176 static void mwifiex_queue_rx_work(struct mwifiex_adapter *adapter)
177 {
178 spin_lock_bh(&adapter->rx_proc_lock);
179 if (adapter->rx_processing) {
180 spin_unlock_bh(&adapter->rx_proc_lock);
181 } else {
182 spin_unlock_bh(&adapter->rx_proc_lock);
183 queue_work(adapter->rx_workqueue, &adapter->rx_work);
184 }
185 }
186
mwifiex_process_rx(struct mwifiex_adapter * adapter)187 static int mwifiex_process_rx(struct mwifiex_adapter *adapter)
188 {
189 struct sk_buff *skb;
190 struct mwifiex_rxinfo *rx_info;
191
192 spin_lock_bh(&adapter->rx_proc_lock);
193 if (adapter->rx_processing || adapter->rx_locked) {
194 spin_unlock_bh(&adapter->rx_proc_lock);
195 goto exit_rx_proc;
196 } else {
197 adapter->rx_processing = true;
198 spin_unlock_bh(&adapter->rx_proc_lock);
199 }
200
201 /* Check for Rx data */
202 while ((skb = skb_dequeue(&adapter->rx_data_q))) {
203 atomic_dec(&adapter->rx_pending);
204 if ((adapter->delay_main_work ||
205 adapter->iface_type == MWIFIEX_USB) &&
206 (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {
207 if (adapter->if_ops.submit_rem_rx_urbs)
208 adapter->if_ops.submit_rem_rx_urbs(adapter);
209 adapter->delay_main_work = false;
210 mwifiex_queue_main_work(adapter);
211 }
212 rx_info = MWIFIEX_SKB_RXCB(skb);
213 if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) {
214 if (adapter->if_ops.deaggr_pkt)
215 adapter->if_ops.deaggr_pkt(adapter, skb);
216 dev_kfree_skb_any(skb);
217 } else {
218 mwifiex_handle_rx_packet(adapter, skb);
219 }
220 }
221 spin_lock_bh(&adapter->rx_proc_lock);
222 adapter->rx_processing = false;
223 spin_unlock_bh(&adapter->rx_proc_lock);
224
225 exit_rx_proc:
226 return 0;
227 }
228
maybe_quirk_fw_disable_ds(struct mwifiex_adapter * adapter)229 static void maybe_quirk_fw_disable_ds(struct mwifiex_adapter *adapter)
230 {
231 struct mwifiex_private *priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA);
232 struct mwifiex_ver_ext ver_ext;
233
234 if (test_and_set_bit(MWIFIEX_IS_REQUESTING_FW_VEREXT, &adapter->work_flags))
235 return;
236
237 memset(&ver_ext, 0, sizeof(ver_ext));
238 ver_ext.version_str_sel = 1;
239 if (mwifiex_send_cmd(priv, HostCmd_CMD_VERSION_EXT,
240 HostCmd_ACT_GEN_GET, 0, &ver_ext, false)) {
241 mwifiex_dbg(priv->adapter, MSG,
242 "Checking hardware revision failed.\n");
243 }
244 }
245
246 /*
247 * The main process.
248 *
249 * This function is the main procedure of the driver and handles various driver
250 * operations. It runs in a loop and provides the core functionalities.
251 *
252 * The main responsibilities of this function are -
253 * - Ensure concurrency control
254 * - Handle pending interrupts and call interrupt handlers
255 * - Wake up the card if required
256 * - Handle command responses and call response handlers
257 * - Handle events and call event handlers
258 * - Execute pending commands
259 * - Transmit pending data packets
260 */
mwifiex_main_process(struct mwifiex_adapter * adapter)261 int mwifiex_main_process(struct mwifiex_adapter *adapter)
262 {
263 int ret = 0;
264 unsigned long flags;
265
266 spin_lock_irqsave(&adapter->main_proc_lock, flags);
267
268 /* Check if already processing */
269 if (adapter->mwifiex_processing || adapter->main_locked) {
270 adapter->more_task_flag = true;
271 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
272 return 0;
273 } else {
274 adapter->mwifiex_processing = true;
275 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
276 }
277 process_start:
278 do {
279 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
280 break;
281
282 /* For non-USB interfaces, If we process interrupts first, it
283 * would increase RX pending even further. Avoid this by
284 * checking if rx_pending has crossed high threshold and
285 * schedule rx work queue and then process interrupts.
286 * For USB interface, there are no interrupts. We already have
287 * HIGH_RX_PENDING check in usb.c
288 */
289 if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING &&
290 adapter->iface_type != MWIFIEX_USB) {
291 adapter->delay_main_work = true;
292 mwifiex_queue_rx_work(adapter);
293 break;
294 }
295
296 /* Handle pending interrupt if any */
297 if (adapter->int_status) {
298 if (adapter->hs_activated)
299 mwifiex_process_hs_config(adapter);
300 if (adapter->if_ops.process_int_status)
301 adapter->if_ops.process_int_status(adapter);
302 }
303
304 if (adapter->rx_work_enabled && adapter->data_received)
305 mwifiex_queue_rx_work(adapter);
306
307 /* Need to wake up the card ? */
308 if ((adapter->ps_state == PS_STATE_SLEEP) &&
309 (adapter->pm_wakeup_card_req &&
310 !adapter->pm_wakeup_fw_try) &&
311 (is_command_pending(adapter) ||
312 !skb_queue_empty(&adapter->tx_data_q) ||
313 !mwifiex_bypass_txlist_empty(adapter) ||
314 !mwifiex_wmm_lists_empty(adapter))) {
315 adapter->pm_wakeup_fw_try = true;
316 mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3));
317 adapter->if_ops.wakeup(adapter);
318 continue;
319 }
320
321 if (IS_CARD_RX_RCVD(adapter)) {
322 adapter->data_received = false;
323 adapter->pm_wakeup_fw_try = false;
324 del_timer(&adapter->wakeup_timer);
325 if (adapter->ps_state == PS_STATE_SLEEP)
326 adapter->ps_state = PS_STATE_AWAKE;
327 } else {
328 /* We have tried to wakeup the card already */
329 if (adapter->pm_wakeup_fw_try)
330 break;
331 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
332 mwifiex_check_ps_cond(adapter);
333
334 if (adapter->ps_state != PS_STATE_AWAKE)
335 break;
336 if (adapter->tx_lock_flag) {
337 if (adapter->iface_type == MWIFIEX_USB) {
338 if (!adapter->usb_mc_setup)
339 break;
340 } else
341 break;
342 }
343
344 if ((!adapter->scan_chan_gap_enabled &&
345 adapter->scan_processing) || adapter->data_sent ||
346 mwifiex_is_tdls_chan_switching
347 (mwifiex_get_priv(adapter,
348 MWIFIEX_BSS_ROLE_STA)) ||
349 (mwifiex_wmm_lists_empty(adapter) &&
350 mwifiex_bypass_txlist_empty(adapter) &&
351 skb_queue_empty(&adapter->tx_data_q))) {
352 if (adapter->cmd_sent || adapter->curr_cmd ||
353 !mwifiex_is_send_cmd_allowed
354 (mwifiex_get_priv(adapter,
355 MWIFIEX_BSS_ROLE_STA)) ||
356 (!is_command_pending(adapter)))
357 break;
358 }
359 }
360
361 /* Check for event */
362 if (adapter->event_received) {
363 adapter->event_received = false;
364 mwifiex_process_event(adapter);
365 }
366
367 /* Check for Cmd Resp */
368 if (adapter->cmd_resp_received) {
369 adapter->cmd_resp_received = false;
370 mwifiex_process_cmdresp(adapter);
371
372 /* call mwifiex back when init_fw is done */
373 if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) {
374 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
375 mwifiex_init_fw_complete(adapter);
376 maybe_quirk_fw_disable_ds(adapter);
377 }
378 }
379
380 /* Check if we need to confirm Sleep Request
381 received previously */
382 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
383 mwifiex_check_ps_cond(adapter);
384
385 /* * The ps_state may have been changed during processing of
386 * Sleep Request event.
387 */
388 if ((adapter->ps_state == PS_STATE_SLEEP) ||
389 (adapter->ps_state == PS_STATE_PRE_SLEEP) ||
390 (adapter->ps_state == PS_STATE_SLEEP_CFM)) {
391 continue;
392 }
393
394 if (adapter->tx_lock_flag) {
395 if (adapter->iface_type == MWIFIEX_USB) {
396 if (!adapter->usb_mc_setup)
397 continue;
398 } else
399 continue;
400 }
401
402 if (!adapter->cmd_sent && !adapter->curr_cmd &&
403 mwifiex_is_send_cmd_allowed
404 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
405 if (mwifiex_exec_next_cmd(adapter) == -1) {
406 ret = -1;
407 break;
408 }
409 }
410
411 /** If USB Multi channel setup ongoing,
412 * wait for ready to tx data.
413 */
414 if (adapter->iface_type == MWIFIEX_USB &&
415 adapter->usb_mc_setup)
416 continue;
417
418 if ((adapter->scan_chan_gap_enabled ||
419 !adapter->scan_processing) &&
420 !adapter->data_sent &&
421 !skb_queue_empty(&adapter->tx_data_q)) {
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_tx_queue(adapter);
429 if (adapter->hs_activated) {
430 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
431 &adapter->work_flags);
432 mwifiex_hs_activated_event
433 (mwifiex_get_priv
434 (adapter, MWIFIEX_BSS_ROLE_ANY),
435 false);
436 }
437 }
438
439 if ((adapter->scan_chan_gap_enabled ||
440 !adapter->scan_processing) &&
441 !adapter->data_sent &&
442 !mwifiex_bypass_txlist_empty(adapter) &&
443 !mwifiex_is_tdls_chan_switching
444 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
445 if (adapter->hs_activated_manually) {
446 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY),
447 MWIFIEX_ASYNC_CMD);
448 adapter->hs_activated_manually = false;
449 }
450
451 mwifiex_process_bypass_tx(adapter);
452 if (adapter->hs_activated) {
453 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
454 &adapter->work_flags);
455 mwifiex_hs_activated_event
456 (mwifiex_get_priv
457 (adapter, MWIFIEX_BSS_ROLE_ANY),
458 false);
459 }
460 }
461
462 if ((adapter->scan_chan_gap_enabled ||
463 !adapter->scan_processing) &&
464 !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) &&
465 !mwifiex_is_tdls_chan_switching
466 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
467 if (adapter->hs_activated_manually) {
468 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY),
469 MWIFIEX_ASYNC_CMD);
470 adapter->hs_activated_manually = false;
471 }
472
473 mwifiex_wmm_process_tx(adapter);
474 if (adapter->hs_activated) {
475 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
476 &adapter->work_flags);
477 mwifiex_hs_activated_event
478 (mwifiex_get_priv
479 (adapter, MWIFIEX_BSS_ROLE_ANY),
480 false);
481 }
482 }
483
484 if (adapter->delay_null_pkt && !adapter->cmd_sent &&
485 !adapter->curr_cmd && !is_command_pending(adapter) &&
486 (mwifiex_wmm_lists_empty(adapter) &&
487 mwifiex_bypass_txlist_empty(adapter) &&
488 skb_queue_empty(&adapter->tx_data_q))) {
489 if (!mwifiex_send_null_packet
490 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
491 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
492 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) {
493 adapter->delay_null_pkt = false;
494 adapter->ps_state = PS_STATE_SLEEP;
495 }
496 break;
497 }
498 } while (true);
499
500 spin_lock_irqsave(&adapter->main_proc_lock, flags);
501 if (adapter->more_task_flag) {
502 adapter->more_task_flag = false;
503 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
504 goto process_start;
505 }
506 adapter->mwifiex_processing = false;
507 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
508
509 return ret;
510 }
511 EXPORT_SYMBOL_GPL(mwifiex_main_process);
512
513 /*
514 * This function frees the adapter structure.
515 *
516 * Additionally, this closes the netlink socket, frees the timers
517 * and private structures.
518 */
mwifiex_free_adapter(struct mwifiex_adapter * adapter)519 static void mwifiex_free_adapter(struct mwifiex_adapter *adapter)
520 {
521 if (!adapter) {
522 pr_err("%s: adapter is NULL\n", __func__);
523 return;
524 }
525
526 mwifiex_unregister(adapter);
527 pr_debug("info: %s: free adapter\n", __func__);
528 }
529
530 /*
531 * This function cancels all works in the queue and destroys
532 * the main workqueue.
533 */
mwifiex_terminate_workqueue(struct mwifiex_adapter * adapter)534 static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter)
535 {
536 if (adapter->workqueue) {
537 destroy_workqueue(adapter->workqueue);
538 adapter->workqueue = NULL;
539 }
540
541 if (adapter->rx_workqueue) {
542 destroy_workqueue(adapter->rx_workqueue);
543 adapter->rx_workqueue = NULL;
544 }
545 }
546
547 /*
548 * This function gets firmware and initializes it.
549 *
550 * The main initialization steps followed are -
551 * - Download the correct firmware to card
552 * - Issue the init commands to firmware
553 */
_mwifiex_fw_dpc(const struct firmware * firmware,void * context)554 static int _mwifiex_fw_dpc(const struct firmware *firmware, void *context)
555 {
556 int ret;
557 char fmt[64];
558 struct mwifiex_adapter *adapter = context;
559 struct mwifiex_fw_image fw;
560 bool init_failed = false;
561 struct wireless_dev *wdev;
562 struct completion *fw_done = adapter->fw_done;
563
564 if (!firmware) {
565 mwifiex_dbg(adapter, ERROR,
566 "Failed to get firmware %s\n", adapter->fw_name);
567 goto err_dnld_fw;
568 }
569
570 memset(&fw, 0, sizeof(struct mwifiex_fw_image));
571 adapter->firmware = firmware;
572 fw.fw_buf = (u8 *) adapter->firmware->data;
573 fw.fw_len = adapter->firmware->size;
574
575 if (adapter->if_ops.dnld_fw) {
576 ret = adapter->if_ops.dnld_fw(adapter, &fw);
577 } else {
578 ret = mwifiex_dnld_fw(adapter, &fw);
579 }
580
581 if (ret == -1)
582 goto err_dnld_fw;
583
584 mwifiex_dbg(adapter, MSG, "WLAN FW is active\n");
585
586 if (cal_data_cfg) {
587 if ((request_firmware(&adapter->cal_data, cal_data_cfg,
588 adapter->dev)) < 0)
589 mwifiex_dbg(adapter, ERROR,
590 "Cal data request_firmware() failed\n");
591 }
592
593 /* enable host interrupt after fw dnld is successful */
594 if (adapter->if_ops.enable_int) {
595 if (adapter->if_ops.enable_int(adapter))
596 goto err_dnld_fw;
597 }
598
599 adapter->init_wait_q_woken = false;
600 ret = mwifiex_init_fw(adapter);
601 if (ret == -1) {
602 goto err_init_fw;
603 } else if (!ret) {
604 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
605 goto done;
606 }
607 /* Wait for mwifiex_init to complete */
608 if (!adapter->mfg_mode) {
609 wait_event_interruptible(adapter->init_wait_q,
610 adapter->init_wait_q_woken);
611 if (adapter->hw_status != MWIFIEX_HW_STATUS_READY)
612 goto err_init_fw;
613 }
614
615 if (!adapter->wiphy) {
616 if (mwifiex_register_cfg80211(adapter)) {
617 mwifiex_dbg(adapter, ERROR,
618 "cannot register with cfg80211\n");
619 goto err_init_fw;
620 }
621 }
622
623 if (mwifiex_init_channel_scan_gap(adapter)) {
624 mwifiex_dbg(adapter, ERROR,
625 "could not init channel stats table\n");
626 goto err_init_chan_scan;
627 }
628
629 if (driver_mode) {
630 driver_mode &= MWIFIEX_DRIVER_MODE_BITMASK;
631 driver_mode |= MWIFIEX_DRIVER_MODE_STA;
632 }
633
634 rtnl_lock();
635 wiphy_lock(adapter->wiphy);
636 /* Create station interface by default */
637 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM,
638 NL80211_IFTYPE_STATION, NULL);
639 if (IS_ERR(wdev)) {
640 mwifiex_dbg(adapter, ERROR,
641 "cannot create default STA interface\n");
642 wiphy_unlock(adapter->wiphy);
643 rtnl_unlock();
644 goto err_add_intf;
645 }
646
647 if (driver_mode & MWIFIEX_DRIVER_MODE_UAP) {
648 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM,
649 NL80211_IFTYPE_AP, NULL);
650 if (IS_ERR(wdev)) {
651 mwifiex_dbg(adapter, ERROR,
652 "cannot create AP interface\n");
653 wiphy_unlock(adapter->wiphy);
654 rtnl_unlock();
655 goto err_add_intf;
656 }
657 }
658
659 if (driver_mode & MWIFIEX_DRIVER_MODE_P2P) {
660 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", NET_NAME_ENUM,
661 NL80211_IFTYPE_P2P_CLIENT, NULL);
662 if (IS_ERR(wdev)) {
663 mwifiex_dbg(adapter, ERROR,
664 "cannot create p2p client interface\n");
665 wiphy_unlock(adapter->wiphy);
666 rtnl_unlock();
667 goto err_add_intf;
668 }
669 }
670 wiphy_unlock(adapter->wiphy);
671 rtnl_unlock();
672
673 mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);
674 mwifiex_dbg(adapter, MSG, "driver_version = %s\n", fmt);
675 adapter->is_up = true;
676 goto done;
677
678 err_add_intf:
679 vfree(adapter->chan_stats);
680 err_init_chan_scan:
681 wiphy_unregister(adapter->wiphy);
682 wiphy_free(adapter->wiphy);
683 err_init_fw:
684 if (adapter->if_ops.disable_int)
685 adapter->if_ops.disable_int(adapter);
686 err_dnld_fw:
687 mwifiex_dbg(adapter, ERROR,
688 "info: %s: unregister device\n", __func__);
689 if (adapter->if_ops.unregister_dev)
690 adapter->if_ops.unregister_dev(adapter);
691
692 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
693 mwifiex_terminate_workqueue(adapter);
694
695 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
696 pr_debug("info: %s: shutdown mwifiex\n", __func__);
697 mwifiex_shutdown_drv(adapter);
698 mwifiex_free_cmd_buffers(adapter);
699 }
700
701 init_failed = true;
702 done:
703 if (adapter->cal_data) {
704 release_firmware(adapter->cal_data);
705 adapter->cal_data = NULL;
706 }
707 if (adapter->firmware) {
708 release_firmware(adapter->firmware);
709 adapter->firmware = NULL;
710 }
711 if (init_failed) {
712 if (adapter->irq_wakeup >= 0)
713 device_init_wakeup(adapter->dev, false);
714 mwifiex_free_adapter(adapter);
715 }
716 /* Tell all current and future waiters we're finished */
717 complete_all(fw_done);
718
719 return init_failed ? -EIO : 0;
720 }
721
mwifiex_fw_dpc(const struct firmware * firmware,void * context)722 static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
723 {
724 _mwifiex_fw_dpc(firmware, context);
725 }
726
727 /*
728 * This function gets the firmware and (if called asynchronously) kicks off the
729 * HW init when done.
730 */
mwifiex_init_hw_fw(struct mwifiex_adapter * adapter,bool req_fw_nowait)731 static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter,
732 bool req_fw_nowait)
733 {
734 int ret;
735
736 /* Override default firmware with manufacturing one if
737 * manufacturing mode is enabled
738 */
739 if (mfg_mode) {
740 if (strlcpy(adapter->fw_name, MFG_FIRMWARE,
741 sizeof(adapter->fw_name)) >=
742 sizeof(adapter->fw_name)) {
743 pr_err("%s: fw_name too long!\n", __func__);
744 return -1;
745 }
746 }
747
748 if (req_fw_nowait) {
749 ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name,
750 adapter->dev, GFP_KERNEL, adapter,
751 mwifiex_fw_dpc);
752 } else {
753 ret = request_firmware(&adapter->firmware,
754 adapter->fw_name,
755 adapter->dev);
756 }
757
758 if (ret < 0)
759 mwifiex_dbg(adapter, ERROR, "request_firmware%s error %d\n",
760 req_fw_nowait ? "_nowait" : "", ret);
761 return ret;
762 }
763
764 /*
765 * CFG802.11 network device handler for open.
766 *
767 * Starts the data queue.
768 */
769 static int
mwifiex_open(struct net_device * dev)770 mwifiex_open(struct net_device *dev)
771 {
772 netif_carrier_off(dev);
773
774 return 0;
775 }
776
777 /*
778 * CFG802.11 network device handler for close.
779 */
780 static int
mwifiex_close(struct net_device * dev)781 mwifiex_close(struct net_device *dev)
782 {
783 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
784
785 if (priv->scan_request) {
786 struct cfg80211_scan_info info = {
787 .aborted = true,
788 };
789
790 mwifiex_dbg(priv->adapter, INFO,
791 "aborting scan on ndo_stop\n");
792 cfg80211_scan_done(priv->scan_request, &info);
793 priv->scan_request = NULL;
794 priv->scan_aborting = true;
795 }
796
797 if (priv->sched_scanning) {
798 mwifiex_dbg(priv->adapter, INFO,
799 "aborting bgscan on ndo_stop\n");
800 mwifiex_stop_bg_scan(priv);
801 cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
802 }
803
804 return 0;
805 }
806
807 static bool
mwifiex_bypass_tx_queue(struct mwifiex_private * priv,struct sk_buff * skb)808 mwifiex_bypass_tx_queue(struct mwifiex_private *priv,
809 struct sk_buff *skb)
810 {
811 struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
812
813 if (ntohs(eth_hdr->h_proto) == ETH_P_PAE ||
814 mwifiex_is_skb_mgmt_frame(skb) ||
815 (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
816 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
817 (ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) {
818 mwifiex_dbg(priv->adapter, DATA,
819 "bypass txqueue; eth type %#x, mgmt %d\n",
820 ntohs(eth_hdr->h_proto),
821 mwifiex_is_skb_mgmt_frame(skb));
822 return true;
823 }
824
825 return false;
826 }
827 /*
828 * Add buffer into wmm tx queue and queue work to transmit it.
829 */
mwifiex_queue_tx_pkt(struct mwifiex_private * priv,struct sk_buff * skb)830 int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)
831 {
832 struct netdev_queue *txq;
833 int index = mwifiex_1d_to_wmm_queue[skb->priority];
834
835 if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) {
836 txq = netdev_get_tx_queue(priv->netdev, index);
837 if (!netif_tx_queue_stopped(txq)) {
838 netif_tx_stop_queue(txq);
839 mwifiex_dbg(priv->adapter, DATA,
840 "stop queue: %d\n", index);
841 }
842 }
843
844 if (mwifiex_bypass_tx_queue(priv, skb)) {
845 atomic_inc(&priv->adapter->tx_pending);
846 atomic_inc(&priv->adapter->bypass_tx_pending);
847 mwifiex_wmm_add_buf_bypass_txqueue(priv, skb);
848 } else {
849 atomic_inc(&priv->adapter->tx_pending);
850 mwifiex_wmm_add_buf_txqueue(priv, skb);
851 }
852
853 mwifiex_queue_main_work(priv->adapter);
854
855 return 0;
856 }
857
858 struct sk_buff *
mwifiex_clone_skb_for_tx_status(struct mwifiex_private * priv,struct sk_buff * skb,u8 flag,u64 * cookie)859 mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv,
860 struct sk_buff *skb, u8 flag, u64 *cookie)
861 {
862 struct sk_buff *orig_skb = skb;
863 struct mwifiex_txinfo *tx_info, *orig_tx_info;
864
865 skb = skb_clone(skb, GFP_ATOMIC);
866 if (skb) {
867 int id;
868
869 spin_lock_bh(&priv->ack_status_lock);
870 id = idr_alloc(&priv->ack_status_frames, orig_skb,
871 1, 0x10, GFP_ATOMIC);
872 spin_unlock_bh(&priv->ack_status_lock);
873
874 if (id >= 0) {
875 tx_info = MWIFIEX_SKB_TXCB(skb);
876 tx_info->ack_frame_id = id;
877 tx_info->flags |= flag;
878 orig_tx_info = MWIFIEX_SKB_TXCB(orig_skb);
879 orig_tx_info->ack_frame_id = id;
880 orig_tx_info->flags |= flag;
881
882 if (flag == MWIFIEX_BUF_FLAG_ACTION_TX_STATUS && cookie)
883 orig_tx_info->cookie = *cookie;
884
885 } else if (skb_shared(skb)) {
886 kfree_skb(orig_skb);
887 } else {
888 kfree_skb(skb);
889 skb = orig_skb;
890 }
891 } else {
892 /* couldn't clone -- lose tx status ... */
893 skb = orig_skb;
894 }
895
896 return skb;
897 }
898
899 /*
900 * CFG802.11 network device handler for data transmission.
901 */
902 static netdev_tx_t
mwifiex_hard_start_xmit(struct sk_buff * skb,struct net_device * dev)903 mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
904 {
905 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
906 struct sk_buff *new_skb;
907 struct mwifiex_txinfo *tx_info;
908 bool multicast;
909
910 mwifiex_dbg(priv->adapter, DATA,
911 "data: %lu BSS(%d-%d): Data <= kernel\n",
912 jiffies, priv->bss_type, priv->bss_num);
913
914 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &priv->adapter->work_flags)) {
915 kfree_skb(skb);
916 priv->stats.tx_dropped++;
917 return 0;
918 }
919 if (!skb->len || (skb->len > ETH_FRAME_LEN)) {
920 mwifiex_dbg(priv->adapter, ERROR,
921 "Tx: bad skb len %d\n", skb->len);
922 kfree_skb(skb);
923 priv->stats.tx_dropped++;
924 return 0;
925 }
926 if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) {
927 mwifiex_dbg(priv->adapter, DATA,
928 "data: Tx: insufficient skb headroom %d\n",
929 skb_headroom(skb));
930 /* Insufficient skb headroom - allocate a new skb */
931 new_skb =
932 skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
933 if (unlikely(!new_skb)) {
934 mwifiex_dbg(priv->adapter, ERROR,
935 "Tx: cannot alloca new_skb\n");
936 kfree_skb(skb);
937 priv->stats.tx_dropped++;
938 return 0;
939 }
940 kfree_skb(skb);
941 skb = new_skb;
942 mwifiex_dbg(priv->adapter, INFO,
943 "info: new skb headroomd %d\n",
944 skb_headroom(skb));
945 }
946
947 tx_info = MWIFIEX_SKB_TXCB(skb);
948 memset(tx_info, 0, sizeof(*tx_info));
949 tx_info->bss_num = priv->bss_num;
950 tx_info->bss_type = priv->bss_type;
951 tx_info->pkt_len = skb->len;
952
953 multicast = is_multicast_ether_addr(skb->data);
954
955 if (unlikely(!multicast && skb->sk &&
956 skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS &&
957 priv->adapter->fw_api_ver == MWIFIEX_FW_V15))
958 skb = mwifiex_clone_skb_for_tx_status(priv,
959 skb,
960 MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS, NULL);
961
962 /* Record the current time the packet was queued; used to
963 * determine the amount of time the packet was queued in
964 * the driver before it was sent to the firmware.
965 * The delay is then sent along with the packet to the
966 * firmware for aggregate delay calculation for stats and
967 * MSDU lifetime expiry.
968 */
969 __net_timestamp(skb);
970
971 if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
972 priv->bss_type == MWIFIEX_BSS_TYPE_STA &&
973 !ether_addr_equal_unaligned(priv->cfg_bssid, skb->data)) {
974 if (priv->adapter->auto_tdls && priv->check_tdls_tx)
975 mwifiex_tdls_check_tx(priv, skb);
976 }
977
978 mwifiex_queue_tx_pkt(priv, skb);
979
980 return 0;
981 }
982
mwifiex_set_mac_address(struct mwifiex_private * priv,struct net_device * dev,bool external,u8 * new_mac)983 int mwifiex_set_mac_address(struct mwifiex_private *priv,
984 struct net_device *dev, bool external,
985 u8 *new_mac)
986 {
987 int ret;
988 u64 mac_addr, old_mac_addr;
989
990 old_mac_addr = ether_addr_to_u64(priv->curr_addr);
991
992 if (external) {
993 mac_addr = ether_addr_to_u64(new_mac);
994 } else {
995 /* Internal mac address change */
996 if (priv->bss_type == MWIFIEX_BSS_TYPE_ANY)
997 return -EOPNOTSUPP;
998
999 mac_addr = old_mac_addr;
1000
1001 if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) {
1002 mac_addr |= BIT_ULL(MWIFIEX_MAC_LOCAL_ADMIN_BIT);
1003 mac_addr += priv->bss_num;
1004 } else if (priv->adapter->priv[0] != priv) {
1005 /* Set mac address based on bss_type/bss_num */
1006 mac_addr ^= BIT_ULL(priv->bss_type + 8);
1007 mac_addr += priv->bss_num;
1008 }
1009 }
1010
1011 u64_to_ether_addr(mac_addr, priv->curr_addr);
1012
1013 /* Send request to firmware */
1014 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
1015 HostCmd_ACT_GEN_SET, 0, NULL, true);
1016
1017 if (ret) {
1018 u64_to_ether_addr(old_mac_addr, priv->curr_addr);
1019 mwifiex_dbg(priv->adapter, ERROR,
1020 "set mac address failed: ret=%d\n", ret);
1021 return ret;
1022 }
1023
1024 eth_hw_addr_set(dev, priv->curr_addr);
1025 return 0;
1026 }
1027
1028 /* CFG802.11 network device handler for setting MAC address.
1029 */
1030 static int
mwifiex_ndo_set_mac_address(struct net_device * dev,void * addr)1031 mwifiex_ndo_set_mac_address(struct net_device *dev, void *addr)
1032 {
1033 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1034 struct sockaddr *hw_addr = addr;
1035
1036 return mwifiex_set_mac_address(priv, dev, true, hw_addr->sa_data);
1037 }
1038
1039 /*
1040 * CFG802.11 network device handler for setting multicast list.
1041 */
mwifiex_set_multicast_list(struct net_device * dev)1042 static void mwifiex_set_multicast_list(struct net_device *dev)
1043 {
1044 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1045 struct mwifiex_multicast_list mcast_list;
1046
1047 if (dev->flags & IFF_PROMISC) {
1048 mcast_list.mode = MWIFIEX_PROMISC_MODE;
1049 } else if (dev->flags & IFF_ALLMULTI ||
1050 netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) {
1051 mcast_list.mode = MWIFIEX_ALL_MULTI_MODE;
1052 } else {
1053 mcast_list.mode = MWIFIEX_MULTICAST_MODE;
1054 mcast_list.num_multicast_addr =
1055 mwifiex_copy_mcast_addr(&mcast_list, dev);
1056 }
1057 mwifiex_request_set_multicast_list(priv, &mcast_list);
1058 }
1059
1060 /*
1061 * CFG802.11 network device handler for transmission timeout.
1062 */
1063 static void
mwifiex_tx_timeout(struct net_device * dev,unsigned int txqueue)1064 mwifiex_tx_timeout(struct net_device *dev, unsigned int txqueue)
1065 {
1066 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1067
1068 priv->num_tx_timeout++;
1069 priv->tx_timeout_cnt++;
1070 mwifiex_dbg(priv->adapter, ERROR,
1071 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
1072 jiffies, priv->tx_timeout_cnt, priv->bss_type,
1073 priv->bss_num);
1074 mwifiex_set_trans_start(dev);
1075
1076 if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&
1077 priv->adapter->if_ops.card_reset) {
1078 mwifiex_dbg(priv->adapter, ERROR,
1079 "tx_timeout_cnt exceeds threshold.\t"
1080 "Triggering card reset!\n");
1081 priv->adapter->if_ops.card_reset(priv->adapter);
1082 }
1083 }
1084
mwifiex_multi_chan_resync(struct mwifiex_adapter * adapter)1085 void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter)
1086 {
1087 struct usb_card_rec *card = adapter->card;
1088 struct mwifiex_private *priv;
1089 u16 tx_buf_size;
1090 int i, ret;
1091
1092 card->mc_resync_flag = true;
1093 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
1094 if (atomic_read(&card->port[i].tx_data_urb_pending)) {
1095 mwifiex_dbg(adapter, WARN, "pending data urb in sys\n");
1096 return;
1097 }
1098 }
1099
1100 card->mc_resync_flag = false;
1101 tx_buf_size = 0xffff;
1102 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1103 ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF,
1104 HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false);
1105 if (ret)
1106 mwifiex_dbg(adapter, ERROR,
1107 "send reconfig tx buf size cmd err\n");
1108 }
1109 EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync);
1110
mwifiex_upload_device_dump(struct mwifiex_adapter * adapter)1111 void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter)
1112 {
1113 /* Dump all the memory data into single file, a userspace script will
1114 * be used to split all the memory data to multiple files
1115 */
1116 mwifiex_dbg(adapter, MSG,
1117 "== mwifiex dump information to /sys/class/devcoredump start\n");
1118 dev_coredumpv(adapter->dev, adapter->devdump_data, adapter->devdump_len,
1119 GFP_KERNEL);
1120 mwifiex_dbg(adapter, MSG,
1121 "== mwifiex dump information to /sys/class/devcoredump end\n");
1122
1123 /* Device dump data will be freed in device coredump release function
1124 * after 5 min. Here reset adapter->devdump_data and ->devdump_len
1125 * to avoid it been accidentally reused.
1126 */
1127 adapter->devdump_data = NULL;
1128 adapter->devdump_len = 0;
1129 }
1130 EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump);
1131
mwifiex_drv_info_dump(struct mwifiex_adapter * adapter)1132 void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter)
1133 {
1134 char *p;
1135 char drv_version[64];
1136 struct usb_card_rec *cardp;
1137 struct sdio_mmc_card *sdio_card;
1138 struct mwifiex_private *priv;
1139 int i, idx;
1140 struct netdev_queue *txq;
1141 struct mwifiex_debug_info *debug_info;
1142
1143 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n");
1144
1145 p = adapter->devdump_data;
1146 strcpy(p, "========Start dump driverinfo========\n");
1147 p += strlen("========Start dump driverinfo========\n");
1148 p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
1149
1150 mwifiex_drv_get_driver_version(adapter, drv_version,
1151 sizeof(drv_version) - 1);
1152 p += sprintf(p, "driver_version = %s\n", drv_version);
1153
1154 if (adapter->iface_type == MWIFIEX_USB) {
1155 cardp = (struct usb_card_rec *)adapter->card;
1156 p += sprintf(p, "tx_cmd_urb_pending = %d\n",
1157 atomic_read(&cardp->tx_cmd_urb_pending));
1158 p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n",
1159 atomic_read(&cardp->port[0].tx_data_urb_pending));
1160 p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n",
1161 atomic_read(&cardp->port[1].tx_data_urb_pending));
1162 p += sprintf(p, "rx_cmd_urb_pending = %d\n",
1163 atomic_read(&cardp->rx_cmd_urb_pending));
1164 p += sprintf(p, "rx_data_urb_pending = %d\n",
1165 atomic_read(&cardp->rx_data_urb_pending));
1166 }
1167
1168 p += sprintf(p, "tx_pending = %d\n",
1169 atomic_read(&adapter->tx_pending));
1170 p += sprintf(p, "rx_pending = %d\n",
1171 atomic_read(&adapter->rx_pending));
1172
1173 if (adapter->iface_type == MWIFIEX_SDIO) {
1174 sdio_card = (struct sdio_mmc_card *)adapter->card;
1175 p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
1176 sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port);
1177 p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
1178 sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port);
1179 }
1180
1181 for (i = 0; i < adapter->priv_num; i++) {
1182 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1183 continue;
1184 priv = adapter->priv[i];
1185 p += sprintf(p, "\n[interface : \"%s\"]\n",
1186 priv->netdev->name);
1187 p += sprintf(p, "wmm_tx_pending[0] = %d\n",
1188 atomic_read(&priv->wmm_tx_pending[0]));
1189 p += sprintf(p, "wmm_tx_pending[1] = %d\n",
1190 atomic_read(&priv->wmm_tx_pending[1]));
1191 p += sprintf(p, "wmm_tx_pending[2] = %d\n",
1192 atomic_read(&priv->wmm_tx_pending[2]));
1193 p += sprintf(p, "wmm_tx_pending[3] = %d\n",
1194 atomic_read(&priv->wmm_tx_pending[3]));
1195 p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ?
1196 "Disconnected" : "Connected");
1197 p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev)
1198 ? "on" : "off"));
1199 for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) {
1200 txq = netdev_get_tx_queue(priv->netdev, idx);
1201 p += sprintf(p, "tx queue %d:%s ", idx,
1202 netif_tx_queue_stopped(txq) ?
1203 "stopped" : "started");
1204 }
1205 p += sprintf(p, "\n%s: num_tx_timeout = %d\n",
1206 priv->netdev->name, priv->num_tx_timeout);
1207 }
1208
1209 if (adapter->iface_type == MWIFIEX_SDIO ||
1210 adapter->iface_type == MWIFIEX_PCIE) {
1211 p += sprintf(p, "\n=== %s register dump===\n",
1212 adapter->iface_type == MWIFIEX_SDIO ?
1213 "SDIO" : "PCIE");
1214 if (adapter->if_ops.reg_dump)
1215 p += adapter->if_ops.reg_dump(adapter, p);
1216 }
1217 p += sprintf(p, "\n=== more debug information\n");
1218 debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);
1219 if (debug_info) {
1220 for (i = 0; i < adapter->priv_num; i++) {
1221 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1222 continue;
1223 priv = adapter->priv[i];
1224 mwifiex_get_debug_info(priv, debug_info);
1225 p += mwifiex_debug_info_to_buffer(priv, p, debug_info);
1226 break;
1227 }
1228 kfree(debug_info);
1229 }
1230
1231 strcpy(p, "\n========End dump========\n");
1232 p += strlen("\n========End dump========\n");
1233 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n");
1234 adapter->devdump_len = p - (char *)adapter->devdump_data;
1235 }
1236 EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump);
1237
mwifiex_prepare_fw_dump_info(struct mwifiex_adapter * adapter)1238 void mwifiex_prepare_fw_dump_info(struct mwifiex_adapter *adapter)
1239 {
1240 u8 idx;
1241 char *fw_dump_ptr;
1242 u32 dump_len = 0;
1243
1244 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1245 struct memory_type_mapping *entry =
1246 &adapter->mem_type_mapping_tbl[idx];
1247
1248 if (entry->mem_ptr) {
1249 dump_len += (strlen("========Start dump ") +
1250 strlen(entry->mem_name) +
1251 strlen("========\n") +
1252 (entry->mem_size + 1) +
1253 strlen("\n========End dump========\n"));
1254 }
1255 }
1256
1257 if (dump_len + 1 + adapter->devdump_len > MWIFIEX_FW_DUMP_SIZE) {
1258 /* Realloc in case buffer overflow */
1259 fw_dump_ptr = vzalloc(dump_len + 1 + adapter->devdump_len);
1260 mwifiex_dbg(adapter, MSG, "Realloc device dump data.\n");
1261 if (!fw_dump_ptr) {
1262 vfree(adapter->devdump_data);
1263 mwifiex_dbg(adapter, ERROR,
1264 "vzalloc devdump data failure!\n");
1265 return;
1266 }
1267
1268 memmove(fw_dump_ptr, adapter->devdump_data,
1269 adapter->devdump_len);
1270 vfree(adapter->devdump_data);
1271 adapter->devdump_data = fw_dump_ptr;
1272 }
1273
1274 fw_dump_ptr = (char *)adapter->devdump_data + adapter->devdump_len;
1275
1276 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1277 struct memory_type_mapping *entry =
1278 &adapter->mem_type_mapping_tbl[idx];
1279
1280 if (entry->mem_ptr) {
1281 strcpy(fw_dump_ptr, "========Start dump ");
1282 fw_dump_ptr += strlen("========Start dump ");
1283
1284 strcpy(fw_dump_ptr, entry->mem_name);
1285 fw_dump_ptr += strlen(entry->mem_name);
1286
1287 strcpy(fw_dump_ptr, "========\n");
1288 fw_dump_ptr += strlen("========\n");
1289
1290 memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1291 fw_dump_ptr += entry->mem_size;
1292
1293 strcpy(fw_dump_ptr, "\n========End dump========\n");
1294 fw_dump_ptr += strlen("\n========End dump========\n");
1295 }
1296 }
1297
1298 adapter->devdump_len = fw_dump_ptr - (char *)adapter->devdump_data;
1299
1300 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1301 struct memory_type_mapping *entry =
1302 &adapter->mem_type_mapping_tbl[idx];
1303
1304 vfree(entry->mem_ptr);
1305 entry->mem_ptr = NULL;
1306 entry->mem_size = 0;
1307 }
1308 }
1309 EXPORT_SYMBOL_GPL(mwifiex_prepare_fw_dump_info);
1310
1311 /*
1312 * CFG802.11 network device handler for statistics retrieval.
1313 */
mwifiex_get_stats(struct net_device * dev)1314 static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
1315 {
1316 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1317
1318 return &priv->stats;
1319 }
1320
1321 static u16
mwifiex_netdev_select_wmm_queue(struct net_device * dev,struct sk_buff * skb,struct net_device * sb_dev)1322 mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb,
1323 struct net_device *sb_dev)
1324 {
1325 skb->priority = cfg80211_classify8021d(skb, NULL);
1326 return mwifiex_1d_to_wmm_queue[skb->priority];
1327 }
1328
1329 /* Network device handlers */
1330 static const struct net_device_ops mwifiex_netdev_ops = {
1331 .ndo_open = mwifiex_open,
1332 .ndo_stop = mwifiex_close,
1333 .ndo_start_xmit = mwifiex_hard_start_xmit,
1334 .ndo_set_mac_address = mwifiex_ndo_set_mac_address,
1335 .ndo_validate_addr = eth_validate_addr,
1336 .ndo_tx_timeout = mwifiex_tx_timeout,
1337 .ndo_get_stats = mwifiex_get_stats,
1338 .ndo_set_rx_mode = mwifiex_set_multicast_list,
1339 .ndo_select_queue = mwifiex_netdev_select_wmm_queue,
1340 };
1341
1342 /*
1343 * This function initializes the private structure parameters.
1344 *
1345 * The following wait queues are initialized -
1346 * - IOCTL wait queue
1347 * - Command wait queue
1348 * - Statistics wait queue
1349 *
1350 * ...and the following default parameters are set -
1351 * - Current key index : Set to 0
1352 * - Rate index : Set to auto
1353 * - Media connected : Set to disconnected
1354 * - Adhoc link sensed : Set to false
1355 * - Nick name : Set to null
1356 * - Number of Tx timeout : Set to 0
1357 * - Device address : Set to current address
1358 * - Rx histogram statistc : Set to 0
1359 *
1360 * In addition, the CFG80211 work queue is also created.
1361 */
mwifiex_init_priv_params(struct mwifiex_private * priv,struct net_device * dev)1362 void mwifiex_init_priv_params(struct mwifiex_private *priv,
1363 struct net_device *dev)
1364 {
1365 dev->netdev_ops = &mwifiex_netdev_ops;
1366 dev->needs_free_netdev = true;
1367 /* Initialize private structure */
1368 priv->current_key_index = 0;
1369 priv->media_connected = false;
1370 memset(priv->mgmt_ie, 0,
1371 sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX);
1372 priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK;
1373 priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK;
1374 priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK;
1375 priv->gen_idx = MWIFIEX_AUTO_IDX_MASK;
1376 priv->num_tx_timeout = 0;
1377 if (is_valid_ether_addr(dev->dev_addr))
1378 ether_addr_copy(priv->curr_addr, dev->dev_addr);
1379 else
1380 ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr);
1381
1382 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
1383 GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
1384 priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL);
1385 if (priv->hist_data)
1386 mwifiex_hist_data_reset(priv);
1387 }
1388 }
1389
1390 /*
1391 * This function check if command is pending.
1392 */
is_command_pending(struct mwifiex_adapter * adapter)1393 int is_command_pending(struct mwifiex_adapter *adapter)
1394 {
1395 int is_cmd_pend_q_empty;
1396
1397 spin_lock_bh(&adapter->cmd_pending_q_lock);
1398 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
1399 spin_unlock_bh(&adapter->cmd_pending_q_lock);
1400
1401 return !is_cmd_pend_q_empty;
1402 }
1403
1404 /*
1405 * This is the RX work queue function.
1406 *
1407 * It handles the RX operations.
1408 */
mwifiex_rx_work_queue(struct work_struct * work)1409 static void mwifiex_rx_work_queue(struct work_struct *work)
1410 {
1411 struct mwifiex_adapter *adapter =
1412 container_of(work, struct mwifiex_adapter, rx_work);
1413
1414 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1415 return;
1416 mwifiex_process_rx(adapter);
1417 }
1418
1419 /*
1420 * This is the main work queue function.
1421 *
1422 * It handles the main process, which in turn handles the complete
1423 * driver operations.
1424 */
mwifiex_main_work_queue(struct work_struct * work)1425 static void mwifiex_main_work_queue(struct work_struct *work)
1426 {
1427 struct mwifiex_adapter *adapter =
1428 container_of(work, struct mwifiex_adapter, main_work);
1429
1430 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1431 return;
1432 mwifiex_main_process(adapter);
1433 }
1434
1435 /* Common teardown code used for both device removal and reset */
mwifiex_uninit_sw(struct mwifiex_adapter * adapter)1436 static void mwifiex_uninit_sw(struct mwifiex_adapter *adapter)
1437 {
1438 struct mwifiex_private *priv;
1439 int i;
1440
1441 /* We can no longer handle interrupts once we start doing the teardown
1442 * below.
1443 */
1444 if (adapter->if_ops.disable_int)
1445 adapter->if_ops.disable_int(adapter);
1446
1447 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1448 mwifiex_terminate_workqueue(adapter);
1449 adapter->int_status = 0;
1450
1451 /* Stop data */
1452 for (i = 0; i < adapter->priv_num; i++) {
1453 priv = adapter->priv[i];
1454 if (priv && priv->netdev) {
1455 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
1456 if (netif_carrier_ok(priv->netdev))
1457 netif_carrier_off(priv->netdev);
1458 netif_device_detach(priv->netdev);
1459 }
1460 }
1461
1462 mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n");
1463 mwifiex_shutdown_drv(adapter);
1464 mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n");
1465
1466 if (atomic_read(&adapter->rx_pending) ||
1467 atomic_read(&adapter->tx_pending) ||
1468 atomic_read(&adapter->cmd_pending)) {
1469 mwifiex_dbg(adapter, ERROR,
1470 "rx_pending=%d, tx_pending=%d,\t"
1471 "cmd_pending=%d\n",
1472 atomic_read(&adapter->rx_pending),
1473 atomic_read(&adapter->tx_pending),
1474 atomic_read(&adapter->cmd_pending));
1475 }
1476
1477 for (i = 0; i < adapter->priv_num; i++) {
1478 priv = adapter->priv[i];
1479 if (!priv)
1480 continue;
1481 rtnl_lock();
1482 if (priv->netdev &&
1483 priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED) {
1484 /*
1485 * Close the netdev now, because if we do it later, the
1486 * netdev notifiers will need to acquire the wiphy lock
1487 * again --> deadlock.
1488 */
1489 dev_close(priv->wdev.netdev);
1490 wiphy_lock(adapter->wiphy);
1491 mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
1492 wiphy_unlock(adapter->wiphy);
1493 }
1494 rtnl_unlock();
1495 }
1496
1497 wiphy_unregister(adapter->wiphy);
1498 wiphy_free(adapter->wiphy);
1499 adapter->wiphy = NULL;
1500
1501 vfree(adapter->chan_stats);
1502 mwifiex_free_cmd_buffers(adapter);
1503 }
1504
1505 /*
1506 * This function can be used for shutting down the adapter SW.
1507 */
mwifiex_shutdown_sw(struct mwifiex_adapter * adapter)1508 int mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
1509 {
1510 struct mwifiex_private *priv;
1511
1512 if (!adapter)
1513 return 0;
1514
1515 wait_for_completion(adapter->fw_done);
1516 /* Caller should ensure we aren't suspending while this happens */
1517 reinit_completion(adapter->fw_done);
1518
1519 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1520 mwifiex_deauthenticate(priv, NULL);
1521
1522 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
1523
1524 mwifiex_uninit_sw(adapter);
1525 adapter->is_up = false;
1526
1527 if (adapter->if_ops.down_dev)
1528 adapter->if_ops.down_dev(adapter);
1529
1530 return 0;
1531 }
1532 EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw);
1533
1534 /* This function can be used for reinitting the adapter SW. Required
1535 * code is extracted from mwifiex_add_card()
1536 */
1537 int
mwifiex_reinit_sw(struct mwifiex_adapter * adapter)1538 mwifiex_reinit_sw(struct mwifiex_adapter *adapter)
1539 {
1540 int ret;
1541
1542 mwifiex_init_lock_list(adapter);
1543 if (adapter->if_ops.up_dev)
1544 adapter->if_ops.up_dev(adapter);
1545
1546 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1547 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1548 init_waitqueue_head(&adapter->init_wait_q);
1549 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
1550 adapter->hs_activated = false;
1551 clear_bit(MWIFIEX_IS_CMD_TIMEDOUT, &adapter->work_flags);
1552 init_waitqueue_head(&adapter->hs_activate_wait_q);
1553 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1554 adapter->cmd_wait_q.status = 0;
1555 adapter->scan_wait_q_woken = false;
1556
1557 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1558 adapter->rx_work_enabled = true;
1559
1560 adapter->workqueue =
1561 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1562 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1563 if (!adapter->workqueue)
1564 goto err_kmalloc;
1565
1566 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1567
1568 if (adapter->rx_work_enabled) {
1569 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1570 WQ_HIGHPRI |
1571 WQ_MEM_RECLAIM |
1572 WQ_UNBOUND, 1);
1573 if (!adapter->rx_workqueue)
1574 goto err_kmalloc;
1575 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1576 }
1577
1578 /* Register the device. Fill up the private data structure with
1579 * relevant information from the card. Some code extracted from
1580 * mwifiex_register_dev()
1581 */
1582 mwifiex_dbg(adapter, INFO, "%s, mwifiex_init_hw_fw()...\n", __func__);
1583
1584 if (mwifiex_init_hw_fw(adapter, false)) {
1585 mwifiex_dbg(adapter, ERROR,
1586 "%s: firmware init failed\n", __func__);
1587 goto err_init_fw;
1588 }
1589
1590 /* _mwifiex_fw_dpc() does its own cleanup */
1591 ret = _mwifiex_fw_dpc(adapter->firmware, adapter);
1592 if (ret) {
1593 pr_err("Failed to bring up adapter: %d\n", ret);
1594 return ret;
1595 }
1596 mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
1597
1598 return 0;
1599
1600 err_init_fw:
1601 mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__);
1602 if (adapter->if_ops.unregister_dev)
1603 adapter->if_ops.unregister_dev(adapter);
1604
1605 err_kmalloc:
1606 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1607 mwifiex_terminate_workqueue(adapter);
1608 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1609 mwifiex_dbg(adapter, ERROR,
1610 "info: %s: shutdown mwifiex\n", __func__);
1611 mwifiex_shutdown_drv(adapter);
1612 mwifiex_free_cmd_buffers(adapter);
1613 }
1614
1615 complete_all(adapter->fw_done);
1616 mwifiex_dbg(adapter, INFO, "%s, error\n", __func__);
1617
1618 return -1;
1619 }
1620 EXPORT_SYMBOL_GPL(mwifiex_reinit_sw);
1621
mwifiex_irq_wakeup_handler(int irq,void * priv)1622 static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv)
1623 {
1624 struct mwifiex_adapter *adapter = priv;
1625
1626 dev_dbg(adapter->dev, "%s: wake by wifi", __func__);
1627 adapter->wake_by_wifi = true;
1628 disable_irq_nosync(irq);
1629
1630 /* Notify PM core we are wakeup source */
1631 pm_wakeup_event(adapter->dev, 0);
1632 pm_system_wakeup();
1633
1634 return IRQ_HANDLED;
1635 }
1636
mwifiex_probe_of(struct mwifiex_adapter * adapter)1637 static void mwifiex_probe_of(struct mwifiex_adapter *adapter)
1638 {
1639 int ret;
1640 struct device *dev = adapter->dev;
1641
1642 if (!dev->of_node)
1643 goto err_exit;
1644
1645 adapter->dt_node = dev->of_node;
1646 adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0);
1647 if (!adapter->irq_wakeup) {
1648 dev_dbg(dev, "fail to parse irq_wakeup from device tree\n");
1649 goto err_exit;
1650 }
1651
1652 ret = devm_request_irq(dev, adapter->irq_wakeup,
1653 mwifiex_irq_wakeup_handler, IRQF_TRIGGER_LOW,
1654 "wifi_wake", adapter);
1655 if (ret) {
1656 dev_err(dev, "Failed to request irq_wakeup %d (%d)\n",
1657 adapter->irq_wakeup, ret);
1658 goto err_exit;
1659 }
1660
1661 disable_irq(adapter->irq_wakeup);
1662 if (device_init_wakeup(dev, true)) {
1663 dev_err(dev, "fail to init wakeup for mwifiex\n");
1664 goto err_exit;
1665 }
1666 return;
1667
1668 err_exit:
1669 adapter->irq_wakeup = -1;
1670 }
1671
1672 /*
1673 * This function adds the card.
1674 *
1675 * This function follows the following major steps to set up the device -
1676 * - Initialize software. This includes probing the card, registering
1677 * the interface operations table, and allocating/initializing the
1678 * adapter structure
1679 * - Set up the netlink socket
1680 * - Create and start the main work queue
1681 * - Register the device
1682 * - Initialize firmware and hardware
1683 * - Add logical interfaces
1684 */
1685 int
mwifiex_add_card(void * card,struct completion * fw_done,struct mwifiex_if_ops * if_ops,u8 iface_type,struct device * dev)1686 mwifiex_add_card(void *card, struct completion *fw_done,
1687 struct mwifiex_if_ops *if_ops, u8 iface_type,
1688 struct device *dev)
1689 {
1690 struct mwifiex_adapter *adapter;
1691
1692 if (mwifiex_register(card, dev, if_ops, (void **)&adapter)) {
1693 pr_err("%s: software init failed\n", __func__);
1694 goto err_init_sw;
1695 }
1696
1697 mwifiex_probe_of(adapter);
1698
1699 adapter->iface_type = iface_type;
1700 adapter->fw_done = fw_done;
1701
1702 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1703 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1704 init_waitqueue_head(&adapter->init_wait_q);
1705 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
1706 adapter->hs_activated = false;
1707 init_waitqueue_head(&adapter->hs_activate_wait_q);
1708 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1709 adapter->cmd_wait_q.status = 0;
1710 adapter->scan_wait_q_woken = false;
1711
1712 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1713 adapter->rx_work_enabled = true;
1714
1715 adapter->workqueue =
1716 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1717 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1718 if (!adapter->workqueue)
1719 goto err_kmalloc;
1720
1721 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1722
1723 if (adapter->rx_work_enabled) {
1724 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1725 WQ_HIGHPRI |
1726 WQ_MEM_RECLAIM |
1727 WQ_UNBOUND, 1);
1728 if (!adapter->rx_workqueue)
1729 goto err_kmalloc;
1730
1731 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1732 }
1733
1734 /* Register the device. Fill up the private data structure with relevant
1735 information from the card. */
1736 if (adapter->if_ops.register_dev(adapter)) {
1737 pr_err("%s: failed to register mwifiex device\n", __func__);
1738 goto err_registerdev;
1739 }
1740
1741 if (mwifiex_init_hw_fw(adapter, true)) {
1742 pr_err("%s: firmware init failed\n", __func__);
1743 goto err_init_fw;
1744 }
1745
1746 return 0;
1747
1748 err_init_fw:
1749 pr_debug("info: %s: unregister device\n", __func__);
1750 if (adapter->if_ops.unregister_dev)
1751 adapter->if_ops.unregister_dev(adapter);
1752 err_registerdev:
1753 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1754 mwifiex_terminate_workqueue(adapter);
1755 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1756 pr_debug("info: %s: shutdown mwifiex\n", __func__);
1757 mwifiex_shutdown_drv(adapter);
1758 mwifiex_free_cmd_buffers(adapter);
1759 }
1760 err_kmalloc:
1761 if (adapter->irq_wakeup >= 0)
1762 device_init_wakeup(adapter->dev, false);
1763 mwifiex_free_adapter(adapter);
1764
1765 err_init_sw:
1766
1767 return -1;
1768 }
1769 EXPORT_SYMBOL_GPL(mwifiex_add_card);
1770
1771 /*
1772 * This function removes the card.
1773 *
1774 * This function follows the following major steps to remove the device -
1775 * - Stop data traffic
1776 * - Shutdown firmware
1777 * - Remove the logical interfaces
1778 * - Terminate the work queue
1779 * - Unregister the device
1780 * - Free the adapter structure
1781 */
mwifiex_remove_card(struct mwifiex_adapter * adapter)1782 int mwifiex_remove_card(struct mwifiex_adapter *adapter)
1783 {
1784 if (!adapter)
1785 return 0;
1786
1787 if (adapter->is_up)
1788 mwifiex_uninit_sw(adapter);
1789
1790 if (adapter->irq_wakeup >= 0)
1791 device_init_wakeup(adapter->dev, false);
1792
1793 /* Unregister device */
1794 mwifiex_dbg(adapter, INFO,
1795 "info: unregister device\n");
1796 if (adapter->if_ops.unregister_dev)
1797 adapter->if_ops.unregister_dev(adapter);
1798 /* Free adapter structure */
1799 mwifiex_dbg(adapter, INFO,
1800 "info: free adapter\n");
1801 mwifiex_free_adapter(adapter);
1802
1803 return 0;
1804 }
1805 EXPORT_SYMBOL_GPL(mwifiex_remove_card);
1806
_mwifiex_dbg(const struct mwifiex_adapter * adapter,int mask,const char * fmt,...)1807 void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
1808 const char *fmt, ...)
1809 {
1810 struct va_format vaf;
1811 va_list args;
1812
1813 if (!(adapter->debug_mask & mask))
1814 return;
1815
1816 va_start(args, fmt);
1817
1818 vaf.fmt = fmt;
1819 vaf.va = &args;
1820
1821 if (adapter->dev)
1822 dev_info(adapter->dev, "%pV", &vaf);
1823 else
1824 pr_info("%pV", &vaf);
1825
1826 va_end(args);
1827 }
1828 EXPORT_SYMBOL_GPL(_mwifiex_dbg);
1829
1830 /*
1831 * This function initializes the module.
1832 *
1833 * The debug FS is also initialized if configured.
1834 */
1835 static int
mwifiex_init_module(void)1836 mwifiex_init_module(void)
1837 {
1838 #ifdef CONFIG_DEBUG_FS
1839 mwifiex_debugfs_init();
1840 #endif
1841 return 0;
1842 }
1843
1844 /*
1845 * This function cleans up the module.
1846 *
1847 * The debug FS is removed if available.
1848 */
1849 static void
mwifiex_cleanup_module(void)1850 mwifiex_cleanup_module(void)
1851 {
1852 #ifdef CONFIG_DEBUG_FS
1853 mwifiex_debugfs_remove();
1854 #endif
1855 }
1856
1857 module_init(mwifiex_init_module);
1858 module_exit(mwifiex_cleanup_module);
1859
1860 MODULE_AUTHOR("Marvell International Ltd.");
1861 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION);
1862 MODULE_VERSION(VERSION);
1863 MODULE_LICENSE("GPL v2");
1864