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[mirror_ubuntu-jammy-kernel.git] / drivers / net / wireless / marvell / mwifiex / main.c
1 /*
2 * Marvell Wireless LAN device driver: major functions
3 *
4 * Copyright (C) 2011-2014, Marvell International Ltd.
5 *
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13 *
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
18 */
19
20 #include <linux/suspend.h>
21
22 #include "main.h"
23 #include "wmm.h"
24 #include "cfg80211.h"
25 #include "11n.h"
26
27 #define VERSION "1.0"
28 #define MFG_FIRMWARE "mwifiex_mfg.bin"
29
30 static unsigned int debug_mask = MWIFIEX_DEFAULT_DEBUG_MASK;
31 module_param(debug_mask, uint, 0);
32 MODULE_PARM_DESC(debug_mask, "bitmap for debug flags");
33
34 const char driver_version[] = "mwifiex " VERSION " (%s) ";
35 static char *cal_data_cfg;
36 module_param(cal_data_cfg, charp, 0);
37
38 static unsigned short driver_mode;
39 module_param(driver_mode, ushort, 0);
40 MODULE_PARM_DESC(driver_mode,
41 "station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7");
42
43 bool mfg_mode;
44 module_param(mfg_mode, bool, 0);
45 MODULE_PARM_DESC(mfg_mode, "manufacturing mode enable:1, disable:0");
46
47 bool aggr_ctrl;
48 module_param(aggr_ctrl, bool, 0000);
49 MODULE_PARM_DESC(aggr_ctrl, "usb tx aggreataon enable:1, disable:0");
50
51 /*
52 * This function registers the device and performs all the necessary
53 * initializations.
54 *
55 * The following initialization operations are performed -
56 * - Allocate adapter structure
57 * - Save interface specific operations table in adapter
58 * - Call interface specific initialization routine
59 * - Allocate private structures
60 * - Set default adapter structure parameters
61 * - Initialize locks
62 *
63 * In case of any errors during inittialization, this function also ensures
64 * proper cleanup before exiting.
65 */
66 static int mwifiex_register(void *card, struct device *dev,
67 struct mwifiex_if_ops *if_ops, void **padapter)
68 {
69 struct mwifiex_adapter *adapter;
70 int i;
71
72 adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL);
73 if (!adapter)
74 return -ENOMEM;
75
76 *padapter = adapter;
77 adapter->dev = dev;
78 adapter->card = card;
79
80 /* Save interface specific operations in adapter */
81 memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));
82 adapter->debug_mask = debug_mask;
83
84 /* card specific initialization has been deferred until now .. */
85 if (adapter->if_ops.init_if)
86 if (adapter->if_ops.init_if(adapter))
87 goto error;
88
89 adapter->priv_num = 0;
90
91 for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) {
92 /* Allocate memory for private structure */
93 adapter->priv[i] =
94 kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL);
95 if (!adapter->priv[i])
96 goto error;
97
98 adapter->priv[i]->adapter = adapter;
99 adapter->priv_num++;
100 }
101 mwifiex_init_lock_list(adapter);
102
103 setup_timer(&adapter->cmd_timer, mwifiex_cmd_timeout_func,
104 (unsigned long)adapter);
105
106 return 0;
107
108 error:
109 mwifiex_dbg(adapter, ERROR,
110 "info: leave mwifiex_register with error\n");
111
112 for (i = 0; i < adapter->priv_num; i++)
113 kfree(adapter->priv[i]);
114
115 kfree(adapter);
116
117 return -1;
118 }
119
120 /*
121 * This function unregisters the device and performs all the necessary
122 * cleanups.
123 *
124 * The following cleanup operations are performed -
125 * - Free the timers
126 * - Free beacon buffers
127 * - Free private structures
128 * - Free adapter structure
129 */
130 static int mwifiex_unregister(struct mwifiex_adapter *adapter)
131 {
132 s32 i;
133
134 if (adapter->if_ops.cleanup_if)
135 adapter->if_ops.cleanup_if(adapter);
136
137 del_timer_sync(&adapter->cmd_timer);
138
139 /* Free private structures */
140 for (i = 0; i < adapter->priv_num; i++) {
141 if (adapter->priv[i]) {
142 mwifiex_free_curr_bcn(adapter->priv[i]);
143 kfree(adapter->priv[i]);
144 }
145 }
146
147 if (adapter->nd_info) {
148 for (i = 0 ; i < adapter->nd_info->n_matches ; i++)
149 kfree(adapter->nd_info->matches[i]);
150 kfree(adapter->nd_info);
151 adapter->nd_info = NULL;
152 }
153
154 kfree(adapter->regd);
155
156 kfree(adapter);
157 return 0;
158 }
159
160 void mwifiex_queue_main_work(struct mwifiex_adapter *adapter)
161 {
162 unsigned long flags;
163
164 spin_lock_irqsave(&adapter->main_proc_lock, flags);
165 if (adapter->mwifiex_processing) {
166 adapter->more_task_flag = true;
167 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
168 } else {
169 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
170 queue_work(adapter->workqueue, &adapter->main_work);
171 }
172 }
173 EXPORT_SYMBOL_GPL(mwifiex_queue_main_work);
174
175 static void mwifiex_queue_rx_work(struct mwifiex_adapter *adapter)
176 {
177 unsigned long flags;
178
179 spin_lock_irqsave(&adapter->rx_proc_lock, flags);
180 if (adapter->rx_processing) {
181 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
182 } else {
183 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
184 queue_work(adapter->rx_workqueue, &adapter->rx_work);
185 }
186 }
187
188 static int mwifiex_process_rx(struct mwifiex_adapter *adapter)
189 {
190 unsigned long flags;
191 struct sk_buff *skb;
192 struct mwifiex_rxinfo *rx_info;
193
194 spin_lock_irqsave(&adapter->rx_proc_lock, flags);
195 if (adapter->rx_processing || adapter->rx_locked) {
196 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
197 goto exit_rx_proc;
198 } else {
199 adapter->rx_processing = true;
200 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
201 }
202
203 /* Check for Rx data */
204 while ((skb = skb_dequeue(&adapter->rx_data_q))) {
205 atomic_dec(&adapter->rx_pending);
206 if ((adapter->delay_main_work ||
207 adapter->iface_type == MWIFIEX_USB) &&
208 (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {
209 if (adapter->if_ops.submit_rem_rx_urbs)
210 adapter->if_ops.submit_rem_rx_urbs(adapter);
211 adapter->delay_main_work = false;
212 mwifiex_queue_main_work(adapter);
213 }
214 rx_info = MWIFIEX_SKB_RXCB(skb);
215 if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) {
216 if (adapter->if_ops.deaggr_pkt)
217 adapter->if_ops.deaggr_pkt(adapter, skb);
218 dev_kfree_skb_any(skb);
219 } else {
220 mwifiex_handle_rx_packet(adapter, skb);
221 }
222 }
223 spin_lock_irqsave(&adapter->rx_proc_lock, flags);
224 adapter->rx_processing = false;
225 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
226
227 exit_rx_proc:
228 return 0;
229 }
230
231 /*
232 * The main process.
233 *
234 * This function is the main procedure of the driver and handles various driver
235 * operations. It runs in a loop and provides the core functionalities.
236 *
237 * The main responsibilities of this function are -
238 * - Ensure concurrency control
239 * - Handle pending interrupts and call interrupt handlers
240 * - Wake up the card if required
241 * - Handle command responses and call response handlers
242 * - Handle events and call event handlers
243 * - Execute pending commands
244 * - Transmit pending data packets
245 */
246 int mwifiex_main_process(struct mwifiex_adapter *adapter)
247 {
248 int ret = 0;
249 unsigned long flags;
250
251 spin_lock_irqsave(&adapter->main_proc_lock, flags);
252
253 /* Check if already processing */
254 if (adapter->mwifiex_processing || adapter->main_locked) {
255 adapter->more_task_flag = true;
256 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
257 return 0;
258 } else {
259 adapter->mwifiex_processing = true;
260 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
261 }
262 process_start:
263 do {
264 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
265 break;
266
267 /* For non-USB interfaces, If we process interrupts first, it
268 * would increase RX pending even further. Avoid this by
269 * checking if rx_pending has crossed high threshold and
270 * schedule rx work queue and then process interrupts.
271 * For USB interface, there are no interrupts. We already have
272 * HIGH_RX_PENDING check in usb.c
273 */
274 if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING &&
275 adapter->iface_type != MWIFIEX_USB) {
276 adapter->delay_main_work = true;
277 mwifiex_queue_rx_work(adapter);
278 break;
279 }
280
281 /* Handle pending interrupt if any */
282 if (adapter->int_status) {
283 if (adapter->hs_activated)
284 mwifiex_process_hs_config(adapter);
285 if (adapter->if_ops.process_int_status)
286 adapter->if_ops.process_int_status(adapter);
287 }
288
289 if (adapter->rx_work_enabled && adapter->data_received)
290 mwifiex_queue_rx_work(adapter);
291
292 /* Need to wake up the card ? */
293 if ((adapter->ps_state == PS_STATE_SLEEP) &&
294 (adapter->pm_wakeup_card_req &&
295 !adapter->pm_wakeup_fw_try) &&
296 (is_command_pending(adapter) ||
297 !skb_queue_empty(&adapter->tx_data_q) ||
298 !mwifiex_bypass_txlist_empty(adapter) ||
299 !mwifiex_wmm_lists_empty(adapter))) {
300 adapter->pm_wakeup_fw_try = true;
301 mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3));
302 adapter->if_ops.wakeup(adapter);
303 continue;
304 }
305
306 if (IS_CARD_RX_RCVD(adapter)) {
307 adapter->data_received = false;
308 adapter->pm_wakeup_fw_try = false;
309 del_timer(&adapter->wakeup_timer);
310 if (adapter->ps_state == PS_STATE_SLEEP)
311 adapter->ps_state = PS_STATE_AWAKE;
312 } else {
313 /* We have tried to wakeup the card already */
314 if (adapter->pm_wakeup_fw_try)
315 break;
316 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
317 mwifiex_check_ps_cond(adapter);
318
319 if (adapter->ps_state != PS_STATE_AWAKE)
320 break;
321 if (adapter->tx_lock_flag) {
322 if (adapter->iface_type == MWIFIEX_USB) {
323 if (!adapter->usb_mc_setup)
324 break;
325 } else
326 break;
327 }
328
329 if ((!adapter->scan_chan_gap_enabled &&
330 adapter->scan_processing) || adapter->data_sent ||
331 mwifiex_is_tdls_chan_switching
332 (mwifiex_get_priv(adapter,
333 MWIFIEX_BSS_ROLE_STA)) ||
334 (mwifiex_wmm_lists_empty(adapter) &&
335 mwifiex_bypass_txlist_empty(adapter) &&
336 skb_queue_empty(&adapter->tx_data_q))) {
337 if (adapter->cmd_sent || adapter->curr_cmd ||
338 !mwifiex_is_send_cmd_allowed
339 (mwifiex_get_priv(adapter,
340 MWIFIEX_BSS_ROLE_STA)) ||
341 (!is_command_pending(adapter)))
342 break;
343 }
344 }
345
346 /* Check for event */
347 if (adapter->event_received) {
348 adapter->event_received = false;
349 mwifiex_process_event(adapter);
350 }
351
352 /* Check for Cmd Resp */
353 if (adapter->cmd_resp_received) {
354 adapter->cmd_resp_received = false;
355 mwifiex_process_cmdresp(adapter);
356
357 /* call mwifiex back when init_fw is done */
358 if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) {
359 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
360 mwifiex_init_fw_complete(adapter);
361 }
362 }
363
364 /* Check if we need to confirm Sleep Request
365 received previously */
366 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
367 mwifiex_check_ps_cond(adapter);
368
369 /* * The ps_state may have been changed during processing of
370 * Sleep Request event.
371 */
372 if ((adapter->ps_state == PS_STATE_SLEEP) ||
373 (adapter->ps_state == PS_STATE_PRE_SLEEP) ||
374 (adapter->ps_state == PS_STATE_SLEEP_CFM)) {
375 continue;
376 }
377
378 if (adapter->tx_lock_flag) {
379 if (adapter->iface_type == MWIFIEX_USB) {
380 if (!adapter->usb_mc_setup)
381 continue;
382 } else
383 continue;
384 }
385
386 if (!adapter->cmd_sent && !adapter->curr_cmd &&
387 mwifiex_is_send_cmd_allowed
388 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
389 if (mwifiex_exec_next_cmd(adapter) == -1) {
390 ret = -1;
391 break;
392 }
393 }
394
395 /** If USB Multi channel setup ongoing,
396 * wait for ready to tx data.
397 */
398 if (adapter->iface_type == MWIFIEX_USB &&
399 adapter->usb_mc_setup)
400 continue;
401
402 if ((adapter->scan_chan_gap_enabled ||
403 !adapter->scan_processing) &&
404 !adapter->data_sent &&
405 !skb_queue_empty(&adapter->tx_data_q)) {
406 mwifiex_process_tx_queue(adapter);
407 if (adapter->hs_activated) {
408 adapter->is_hs_configured = false;
409 mwifiex_hs_activated_event
410 (mwifiex_get_priv
411 (adapter, MWIFIEX_BSS_ROLE_ANY),
412 false);
413 }
414 }
415
416 if ((adapter->scan_chan_gap_enabled ||
417 !adapter->scan_processing) &&
418 !adapter->data_sent &&
419 !mwifiex_bypass_txlist_empty(adapter) &&
420 !mwifiex_is_tdls_chan_switching
421 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
422 mwifiex_process_bypass_tx(adapter);
423 if (adapter->hs_activated) {
424 adapter->is_hs_configured = false;
425 mwifiex_hs_activated_event
426 (mwifiex_get_priv
427 (adapter, MWIFIEX_BSS_ROLE_ANY),
428 false);
429 }
430 }
431
432 if ((adapter->scan_chan_gap_enabled ||
433 !adapter->scan_processing) &&
434 !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) &&
435 !mwifiex_is_tdls_chan_switching
436 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
437 mwifiex_wmm_process_tx(adapter);
438 if (adapter->hs_activated) {
439 adapter->is_hs_configured = false;
440 mwifiex_hs_activated_event
441 (mwifiex_get_priv
442 (adapter, MWIFIEX_BSS_ROLE_ANY),
443 false);
444 }
445 }
446
447 if (adapter->delay_null_pkt && !adapter->cmd_sent &&
448 !adapter->curr_cmd && !is_command_pending(adapter) &&
449 (mwifiex_wmm_lists_empty(adapter) &&
450 mwifiex_bypass_txlist_empty(adapter) &&
451 skb_queue_empty(&adapter->tx_data_q))) {
452 if (!mwifiex_send_null_packet
453 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
454 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
455 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) {
456 adapter->delay_null_pkt = false;
457 adapter->ps_state = PS_STATE_SLEEP;
458 }
459 break;
460 }
461 } while (true);
462
463 spin_lock_irqsave(&adapter->main_proc_lock, flags);
464 if (adapter->more_task_flag) {
465 adapter->more_task_flag = false;
466 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
467 goto process_start;
468 }
469 adapter->mwifiex_processing = false;
470 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
471
472 return ret;
473 }
474 EXPORT_SYMBOL_GPL(mwifiex_main_process);
475
476 /*
477 * This function frees the adapter structure.
478 *
479 * Additionally, this closes the netlink socket, frees the timers
480 * and private structures.
481 */
482 static void mwifiex_free_adapter(struct mwifiex_adapter *adapter)
483 {
484 if (!adapter) {
485 pr_err("%s: adapter is NULL\n", __func__);
486 return;
487 }
488
489 mwifiex_unregister(adapter);
490 pr_debug("info: %s: free adapter\n", __func__);
491 }
492
493 /*
494 * This function cancels all works in the queue and destroys
495 * the main workqueue.
496 */
497 static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter)
498 {
499 if (adapter->workqueue) {
500 flush_workqueue(adapter->workqueue);
501 destroy_workqueue(adapter->workqueue);
502 adapter->workqueue = NULL;
503 }
504
505 if (adapter->rx_workqueue) {
506 flush_workqueue(adapter->rx_workqueue);
507 destroy_workqueue(adapter->rx_workqueue);
508 adapter->rx_workqueue = NULL;
509 }
510 }
511
512 /*
513 * This function gets firmware and initializes it.
514 *
515 * The main initialization steps followed are -
516 * - Download the correct firmware to card
517 * - Issue the init commands to firmware
518 */
519 static int _mwifiex_fw_dpc(const struct firmware *firmware, void *context)
520 {
521 int ret;
522 char fmt[64];
523 struct mwifiex_adapter *adapter = context;
524 struct mwifiex_fw_image fw;
525 bool init_failed = false;
526 struct wireless_dev *wdev;
527 struct completion *fw_done = adapter->fw_done;
528
529 if (!firmware) {
530 mwifiex_dbg(adapter, ERROR,
531 "Failed to get firmware %s\n", adapter->fw_name);
532 goto err_dnld_fw;
533 }
534
535 memset(&fw, 0, sizeof(struct mwifiex_fw_image));
536 adapter->firmware = firmware;
537 fw.fw_buf = (u8 *) adapter->firmware->data;
538 fw.fw_len = adapter->firmware->size;
539
540 if (adapter->if_ops.dnld_fw) {
541 ret = adapter->if_ops.dnld_fw(adapter, &fw);
542 } else {
543 ret = mwifiex_dnld_fw(adapter, &fw);
544 }
545
546 if (ret == -1)
547 goto err_dnld_fw;
548
549 mwifiex_dbg(adapter, MSG, "WLAN FW is active\n");
550
551 if (cal_data_cfg) {
552 if ((request_firmware(&adapter->cal_data, cal_data_cfg,
553 adapter->dev)) < 0)
554 mwifiex_dbg(adapter, ERROR,
555 "Cal data request_firmware() failed\n");
556 }
557
558 /* enable host interrupt after fw dnld is successful */
559 if (adapter->if_ops.enable_int) {
560 if (adapter->if_ops.enable_int(adapter))
561 goto err_dnld_fw;
562 }
563
564 adapter->init_wait_q_woken = false;
565 ret = mwifiex_init_fw(adapter);
566 if (ret == -1) {
567 goto err_init_fw;
568 } else if (!ret) {
569 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
570 goto done;
571 }
572 /* Wait for mwifiex_init to complete */
573 if (!adapter->mfg_mode) {
574 wait_event_interruptible(adapter->init_wait_q,
575 adapter->init_wait_q_woken);
576 if (adapter->hw_status != MWIFIEX_HW_STATUS_READY)
577 goto err_init_fw;
578 }
579
580 if (!adapter->wiphy) {
581 if (mwifiex_register_cfg80211(adapter)) {
582 mwifiex_dbg(adapter, ERROR,
583 "cannot register with cfg80211\n");
584 goto err_init_fw;
585 }
586 }
587
588 if (mwifiex_init_channel_scan_gap(adapter)) {
589 mwifiex_dbg(adapter, ERROR,
590 "could not init channel stats table\n");
591 goto err_init_fw;
592 }
593
594 if (driver_mode) {
595 driver_mode &= MWIFIEX_DRIVER_MODE_BITMASK;
596 driver_mode |= MWIFIEX_DRIVER_MODE_STA;
597 }
598
599 rtnl_lock();
600 /* Create station interface by default */
601 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM,
602 NL80211_IFTYPE_STATION, NULL);
603 if (IS_ERR(wdev)) {
604 mwifiex_dbg(adapter, ERROR,
605 "cannot create default STA interface\n");
606 rtnl_unlock();
607 goto err_add_intf;
608 }
609
610 if (driver_mode & MWIFIEX_DRIVER_MODE_UAP) {
611 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM,
612 NL80211_IFTYPE_AP, NULL);
613 if (IS_ERR(wdev)) {
614 mwifiex_dbg(adapter, ERROR,
615 "cannot create AP interface\n");
616 rtnl_unlock();
617 goto err_add_intf;
618 }
619 }
620
621 if (driver_mode & MWIFIEX_DRIVER_MODE_P2P) {
622 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", NET_NAME_ENUM,
623 NL80211_IFTYPE_P2P_CLIENT, NULL);
624 if (IS_ERR(wdev)) {
625 mwifiex_dbg(adapter, ERROR,
626 "cannot create p2p client interface\n");
627 rtnl_unlock();
628 goto err_add_intf;
629 }
630 }
631 rtnl_unlock();
632
633 mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);
634 mwifiex_dbg(adapter, MSG, "driver_version = %s\n", fmt);
635 goto done;
636
637 err_add_intf:
638 vfree(adapter->chan_stats);
639 wiphy_unregister(adapter->wiphy);
640 wiphy_free(adapter->wiphy);
641 err_init_fw:
642 if (adapter->if_ops.disable_int)
643 adapter->if_ops.disable_int(adapter);
644 err_dnld_fw:
645 mwifiex_dbg(adapter, ERROR,
646 "info: %s: unregister device\n", __func__);
647 if (adapter->if_ops.unregister_dev)
648 adapter->if_ops.unregister_dev(adapter);
649
650 adapter->surprise_removed = true;
651 mwifiex_terminate_workqueue(adapter);
652
653 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
654 pr_debug("info: %s: shutdown mwifiex\n", __func__);
655 mwifiex_shutdown_drv(adapter);
656 }
657
658 init_failed = true;
659 done:
660 if (adapter->cal_data) {
661 release_firmware(adapter->cal_data);
662 adapter->cal_data = NULL;
663 }
664 if (adapter->firmware) {
665 release_firmware(adapter->firmware);
666 adapter->firmware = NULL;
667 }
668 if (init_failed)
669 mwifiex_free_adapter(adapter);
670 /* Tell all current and future waiters we're finished */
671 complete_all(fw_done);
672
673 return init_failed ? -EIO : 0;
674 }
675
676 static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
677 {
678 _mwifiex_fw_dpc(firmware, context);
679 }
680
681 /*
682 * This function gets the firmware and (if called asynchronously) kicks off the
683 * HW init when done.
684 */
685 static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter,
686 bool req_fw_nowait)
687 {
688 int ret;
689
690 /* Override default firmware with manufacturing one if
691 * manufacturing mode is enabled
692 */
693 if (mfg_mode) {
694 if (strlcpy(adapter->fw_name, MFG_FIRMWARE,
695 sizeof(adapter->fw_name)) >=
696 sizeof(adapter->fw_name)) {
697 pr_err("%s: fw_name too long!\n", __func__);
698 return -1;
699 }
700 }
701
702 if (req_fw_nowait) {
703 ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name,
704 adapter->dev, GFP_KERNEL, adapter,
705 mwifiex_fw_dpc);
706 } else {
707 ret = request_firmware(&adapter->firmware,
708 adapter->fw_name,
709 adapter->dev);
710 }
711
712 if (ret < 0)
713 mwifiex_dbg(adapter, ERROR, "request_firmware%s error %d\n",
714 req_fw_nowait ? "_nowait" : "", ret);
715 return ret;
716 }
717
718 /*
719 * CFG802.11 network device handler for open.
720 *
721 * Starts the data queue.
722 */
723 static int
724 mwifiex_open(struct net_device *dev)
725 {
726 netif_carrier_off(dev);
727
728 return 0;
729 }
730
731 /*
732 * CFG802.11 network device handler for close.
733 */
734 static int
735 mwifiex_close(struct net_device *dev)
736 {
737 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
738
739 if (priv->scan_request) {
740 struct cfg80211_scan_info info = {
741 .aborted = true,
742 };
743
744 mwifiex_dbg(priv->adapter, INFO,
745 "aborting scan on ndo_stop\n");
746 cfg80211_scan_done(priv->scan_request, &info);
747 priv->scan_request = NULL;
748 priv->scan_aborting = true;
749 }
750
751 if (priv->sched_scanning) {
752 mwifiex_dbg(priv->adapter, INFO,
753 "aborting bgscan on ndo_stop\n");
754 mwifiex_stop_bg_scan(priv);
755 cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
756 }
757
758 return 0;
759 }
760
761 static bool
762 mwifiex_bypass_tx_queue(struct mwifiex_private *priv,
763 struct sk_buff *skb)
764 {
765 struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
766
767 if (ntohs(eth_hdr->h_proto) == ETH_P_PAE ||
768 mwifiex_is_skb_mgmt_frame(skb) ||
769 (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
770 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
771 (ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) {
772 mwifiex_dbg(priv->adapter, DATA,
773 "bypass txqueue; eth type %#x, mgmt %d\n",
774 ntohs(eth_hdr->h_proto),
775 mwifiex_is_skb_mgmt_frame(skb));
776 return true;
777 }
778
779 return false;
780 }
781 /*
782 * Add buffer into wmm tx queue and queue work to transmit it.
783 */
784 int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)
785 {
786 struct netdev_queue *txq;
787 int index = mwifiex_1d_to_wmm_queue[skb->priority];
788
789 if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) {
790 txq = netdev_get_tx_queue(priv->netdev, index);
791 if (!netif_tx_queue_stopped(txq)) {
792 netif_tx_stop_queue(txq);
793 mwifiex_dbg(priv->adapter, DATA,
794 "stop queue: %d\n", index);
795 }
796 }
797
798 if (mwifiex_bypass_tx_queue(priv, skb)) {
799 atomic_inc(&priv->adapter->tx_pending);
800 atomic_inc(&priv->adapter->bypass_tx_pending);
801 mwifiex_wmm_add_buf_bypass_txqueue(priv, skb);
802 } else {
803 atomic_inc(&priv->adapter->tx_pending);
804 mwifiex_wmm_add_buf_txqueue(priv, skb);
805 }
806
807 mwifiex_queue_main_work(priv->adapter);
808
809 return 0;
810 }
811
812 struct sk_buff *
813 mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv,
814 struct sk_buff *skb, u8 flag, u64 *cookie)
815 {
816 struct sk_buff *orig_skb = skb;
817 struct mwifiex_txinfo *tx_info, *orig_tx_info;
818
819 skb = skb_clone(skb, GFP_ATOMIC);
820 if (skb) {
821 unsigned long flags;
822 int id;
823
824 spin_lock_irqsave(&priv->ack_status_lock, flags);
825 id = idr_alloc(&priv->ack_status_frames, orig_skb,
826 1, 0x10, GFP_ATOMIC);
827 spin_unlock_irqrestore(&priv->ack_status_lock, flags);
828
829 if (id >= 0) {
830 tx_info = MWIFIEX_SKB_TXCB(skb);
831 tx_info->ack_frame_id = id;
832 tx_info->flags |= flag;
833 orig_tx_info = MWIFIEX_SKB_TXCB(orig_skb);
834 orig_tx_info->ack_frame_id = id;
835 orig_tx_info->flags |= flag;
836
837 if (flag == MWIFIEX_BUF_FLAG_ACTION_TX_STATUS && cookie)
838 orig_tx_info->cookie = *cookie;
839
840 } else if (skb_shared(skb)) {
841 kfree_skb(orig_skb);
842 } else {
843 kfree_skb(skb);
844 skb = orig_skb;
845 }
846 } else {
847 /* couldn't clone -- lose tx status ... */
848 skb = orig_skb;
849 }
850
851 return skb;
852 }
853
854 /*
855 * CFG802.11 network device handler for data transmission.
856 */
857 static int
858 mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
859 {
860 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
861 struct sk_buff *new_skb;
862 struct mwifiex_txinfo *tx_info;
863 bool multicast;
864
865 mwifiex_dbg(priv->adapter, DATA,
866 "data: %lu BSS(%d-%d): Data <= kernel\n",
867 jiffies, priv->bss_type, priv->bss_num);
868
869 if (priv->adapter->surprise_removed) {
870 kfree_skb(skb);
871 priv->stats.tx_dropped++;
872 return 0;
873 }
874 if (!skb->len || (skb->len > ETH_FRAME_LEN)) {
875 mwifiex_dbg(priv->adapter, ERROR,
876 "Tx: bad skb len %d\n", skb->len);
877 kfree_skb(skb);
878 priv->stats.tx_dropped++;
879 return 0;
880 }
881 if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) {
882 mwifiex_dbg(priv->adapter, DATA,
883 "data: Tx: insufficient skb headroom %d\n",
884 skb_headroom(skb));
885 /* Insufficient skb headroom - allocate a new skb */
886 new_skb =
887 skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
888 if (unlikely(!new_skb)) {
889 mwifiex_dbg(priv->adapter, ERROR,
890 "Tx: cannot alloca new_skb\n");
891 kfree_skb(skb);
892 priv->stats.tx_dropped++;
893 return 0;
894 }
895 kfree_skb(skb);
896 skb = new_skb;
897 mwifiex_dbg(priv->adapter, INFO,
898 "info: new skb headroomd %d\n",
899 skb_headroom(skb));
900 }
901
902 tx_info = MWIFIEX_SKB_TXCB(skb);
903 memset(tx_info, 0, sizeof(*tx_info));
904 tx_info->bss_num = priv->bss_num;
905 tx_info->bss_type = priv->bss_type;
906 tx_info->pkt_len = skb->len;
907
908 multicast = is_multicast_ether_addr(skb->data);
909
910 if (unlikely(!multicast && skb->sk &&
911 skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS &&
912 priv->adapter->fw_api_ver == MWIFIEX_FW_V15))
913 skb = mwifiex_clone_skb_for_tx_status(priv,
914 skb,
915 MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS, NULL);
916
917 /* Record the current time the packet was queued; used to
918 * determine the amount of time the packet was queued in
919 * the driver before it was sent to the firmware.
920 * The delay is then sent along with the packet to the
921 * firmware for aggregate delay calculation for stats and
922 * MSDU lifetime expiry.
923 */
924 __net_timestamp(skb);
925
926 if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
927 priv->bss_type == MWIFIEX_BSS_TYPE_STA &&
928 !ether_addr_equal_unaligned(priv->cfg_bssid, skb->data)) {
929 if (priv->adapter->auto_tdls && priv->check_tdls_tx)
930 mwifiex_tdls_check_tx(priv, skb);
931 }
932
933 mwifiex_queue_tx_pkt(priv, skb);
934
935 return 0;
936 }
937
938 /*
939 * CFG802.11 network device handler for setting MAC address.
940 */
941 static int
942 mwifiex_set_mac_address(struct net_device *dev, void *addr)
943 {
944 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
945 struct sockaddr *hw_addr = addr;
946 int ret;
947
948 memcpy(priv->curr_addr, hw_addr->sa_data, ETH_ALEN);
949
950 /* Send request to firmware */
951 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
952 HostCmd_ACT_GEN_SET, 0, NULL, true);
953
954 if (!ret)
955 memcpy(priv->netdev->dev_addr, priv->curr_addr, ETH_ALEN);
956 else
957 mwifiex_dbg(priv->adapter, ERROR,
958 "set mac address failed: ret=%d\n", ret);
959
960 memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN);
961
962 return ret;
963 }
964
965 /*
966 * CFG802.11 network device handler for setting multicast list.
967 */
968 static void mwifiex_set_multicast_list(struct net_device *dev)
969 {
970 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
971 struct mwifiex_multicast_list mcast_list;
972
973 if (dev->flags & IFF_PROMISC) {
974 mcast_list.mode = MWIFIEX_PROMISC_MODE;
975 } else if (dev->flags & IFF_ALLMULTI ||
976 netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) {
977 mcast_list.mode = MWIFIEX_ALL_MULTI_MODE;
978 } else {
979 mcast_list.mode = MWIFIEX_MULTICAST_MODE;
980 mcast_list.num_multicast_addr =
981 mwifiex_copy_mcast_addr(&mcast_list, dev);
982 }
983 mwifiex_request_set_multicast_list(priv, &mcast_list);
984 }
985
986 /*
987 * CFG802.11 network device handler for transmission timeout.
988 */
989 static void
990 mwifiex_tx_timeout(struct net_device *dev)
991 {
992 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
993
994 priv->num_tx_timeout++;
995 priv->tx_timeout_cnt++;
996 mwifiex_dbg(priv->adapter, ERROR,
997 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
998 jiffies, priv->tx_timeout_cnt, priv->bss_type,
999 priv->bss_num);
1000 mwifiex_set_trans_start(dev);
1001
1002 if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&
1003 priv->adapter->if_ops.card_reset) {
1004 mwifiex_dbg(priv->adapter, ERROR,
1005 "tx_timeout_cnt exceeds threshold.\t"
1006 "Triggering card reset!\n");
1007 priv->adapter->if_ops.card_reset(priv->adapter);
1008 }
1009 }
1010
1011 void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter)
1012 {
1013 struct usb_card_rec *card = adapter->card;
1014 struct mwifiex_private *priv;
1015 u16 tx_buf_size;
1016 int i, ret;
1017
1018 card->mc_resync_flag = true;
1019 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
1020 if (atomic_read(&card->port[i].tx_data_urb_pending)) {
1021 mwifiex_dbg(adapter, WARN, "pending data urb in sys\n");
1022 return;
1023 }
1024 }
1025
1026 card->mc_resync_flag = false;
1027 tx_buf_size = 0xffff;
1028 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1029 ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF,
1030 HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false);
1031 if (ret)
1032 mwifiex_dbg(adapter, ERROR,
1033 "send reconfig tx buf size cmd err\n");
1034 }
1035 EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync);
1036
1037 int mwifiex_drv_info_dump(struct mwifiex_adapter *adapter, void **drv_info)
1038 {
1039 void *p;
1040 char drv_version[64];
1041 struct usb_card_rec *cardp;
1042 struct sdio_mmc_card *sdio_card;
1043 struct mwifiex_private *priv;
1044 int i, idx;
1045 struct netdev_queue *txq;
1046 struct mwifiex_debug_info *debug_info;
1047 void *drv_info_dump;
1048
1049 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n");
1050
1051 /* memory allocate here should be free in mwifiex_upload_device_dump*/
1052 drv_info_dump = vzalloc(MWIFIEX_DRV_INFO_SIZE_MAX);
1053
1054 if (!drv_info_dump)
1055 return 0;
1056
1057 p = (char *)(drv_info_dump);
1058 p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
1059
1060 mwifiex_drv_get_driver_version(adapter, drv_version,
1061 sizeof(drv_version) - 1);
1062 p += sprintf(p, "driver_version = %s\n", drv_version);
1063
1064 if (adapter->iface_type == MWIFIEX_USB) {
1065 cardp = (struct usb_card_rec *)adapter->card;
1066 p += sprintf(p, "tx_cmd_urb_pending = %d\n",
1067 atomic_read(&cardp->tx_cmd_urb_pending));
1068 p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n",
1069 atomic_read(&cardp->port[0].tx_data_urb_pending));
1070 p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n",
1071 atomic_read(&cardp->port[1].tx_data_urb_pending));
1072 p += sprintf(p, "rx_cmd_urb_pending = %d\n",
1073 atomic_read(&cardp->rx_cmd_urb_pending));
1074 p += sprintf(p, "rx_data_urb_pending = %d\n",
1075 atomic_read(&cardp->rx_data_urb_pending));
1076 }
1077
1078 p += sprintf(p, "tx_pending = %d\n",
1079 atomic_read(&adapter->tx_pending));
1080 p += sprintf(p, "rx_pending = %d\n",
1081 atomic_read(&adapter->rx_pending));
1082
1083 if (adapter->iface_type == MWIFIEX_SDIO) {
1084 sdio_card = (struct sdio_mmc_card *)adapter->card;
1085 p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
1086 sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port);
1087 p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
1088 sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port);
1089 }
1090
1091 for (i = 0; i < adapter->priv_num; i++) {
1092 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1093 continue;
1094 priv = adapter->priv[i];
1095 p += sprintf(p, "\n[interface : \"%s\"]\n",
1096 priv->netdev->name);
1097 p += sprintf(p, "wmm_tx_pending[0] = %d\n",
1098 atomic_read(&priv->wmm_tx_pending[0]));
1099 p += sprintf(p, "wmm_tx_pending[1] = %d\n",
1100 atomic_read(&priv->wmm_tx_pending[1]));
1101 p += sprintf(p, "wmm_tx_pending[2] = %d\n",
1102 atomic_read(&priv->wmm_tx_pending[2]));
1103 p += sprintf(p, "wmm_tx_pending[3] = %d\n",
1104 atomic_read(&priv->wmm_tx_pending[3]));
1105 p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ?
1106 "Disconnected" : "Connected");
1107 p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev)
1108 ? "on" : "off"));
1109 for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) {
1110 txq = netdev_get_tx_queue(priv->netdev, idx);
1111 p += sprintf(p, "tx queue %d:%s ", idx,
1112 netif_tx_queue_stopped(txq) ?
1113 "stopped" : "started");
1114 }
1115 p += sprintf(p, "\n%s: num_tx_timeout = %d\n",
1116 priv->netdev->name, priv->num_tx_timeout);
1117 }
1118
1119 if (adapter->iface_type == MWIFIEX_SDIO ||
1120 adapter->iface_type == MWIFIEX_PCIE) {
1121 p += sprintf(p, "\n=== %s register dump===\n",
1122 adapter->iface_type == MWIFIEX_SDIO ?
1123 "SDIO" : "PCIE");
1124 if (adapter->if_ops.reg_dump)
1125 p += adapter->if_ops.reg_dump(adapter, p);
1126 }
1127 p += sprintf(p, "\n=== more debug information\n");
1128 debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);
1129 if (debug_info) {
1130 for (i = 0; i < adapter->priv_num; i++) {
1131 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1132 continue;
1133 priv = adapter->priv[i];
1134 mwifiex_get_debug_info(priv, debug_info);
1135 p += mwifiex_debug_info_to_buffer(priv, p, debug_info);
1136 break;
1137 }
1138 kfree(debug_info);
1139 }
1140
1141 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n");
1142 *drv_info = drv_info_dump;
1143 return p - drv_info_dump;
1144 }
1145 EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump);
1146
1147 void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter, void *drv_info,
1148 int drv_info_size)
1149 {
1150 u8 idx, *dump_data, *fw_dump_ptr;
1151 u32 dump_len;
1152
1153 dump_len = (strlen("========Start dump driverinfo========\n") +
1154 drv_info_size +
1155 strlen("\n========End dump========\n"));
1156
1157 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1158 struct memory_type_mapping *entry =
1159 &adapter->mem_type_mapping_tbl[idx];
1160
1161 if (entry->mem_ptr) {
1162 dump_len += (strlen("========Start dump ") +
1163 strlen(entry->mem_name) +
1164 strlen("========\n") +
1165 (entry->mem_size + 1) +
1166 strlen("\n========End dump========\n"));
1167 }
1168 }
1169
1170 dump_data = vzalloc(dump_len + 1);
1171 if (!dump_data)
1172 goto done;
1173
1174 fw_dump_ptr = dump_data;
1175
1176 /* Dump all the memory data into single file, a userspace script will
1177 * be used to split all the memory data to multiple files
1178 */
1179 mwifiex_dbg(adapter, MSG,
1180 "== mwifiex dump information to /sys/class/devcoredump start");
1181
1182 strcpy(fw_dump_ptr, "========Start dump driverinfo========\n");
1183 fw_dump_ptr += strlen("========Start dump driverinfo========\n");
1184 memcpy(fw_dump_ptr, drv_info, drv_info_size);
1185 fw_dump_ptr += drv_info_size;
1186 strcpy(fw_dump_ptr, "\n========End dump========\n");
1187 fw_dump_ptr += strlen("\n========End dump========\n");
1188
1189 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1190 struct memory_type_mapping *entry =
1191 &adapter->mem_type_mapping_tbl[idx];
1192
1193 if (entry->mem_ptr) {
1194 strcpy(fw_dump_ptr, "========Start dump ");
1195 fw_dump_ptr += strlen("========Start dump ");
1196
1197 strcpy(fw_dump_ptr, entry->mem_name);
1198 fw_dump_ptr += strlen(entry->mem_name);
1199
1200 strcpy(fw_dump_ptr, "========\n");
1201 fw_dump_ptr += strlen("========\n");
1202
1203 memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1204 fw_dump_ptr += entry->mem_size;
1205
1206 strcpy(fw_dump_ptr, "\n========End dump========\n");
1207 fw_dump_ptr += strlen("\n========End dump========\n");
1208 }
1209 }
1210
1211 /* device dump data will be free in device coredump release function
1212 * after 5 min
1213 */
1214 dev_coredumpv(adapter->dev, dump_data, dump_len, GFP_KERNEL);
1215 mwifiex_dbg(adapter, MSG,
1216 "== mwifiex dump information to /sys/class/devcoredump end");
1217
1218 done:
1219 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1220 struct memory_type_mapping *entry =
1221 &adapter->mem_type_mapping_tbl[idx];
1222
1223 vfree(entry->mem_ptr);
1224 entry->mem_ptr = NULL;
1225 entry->mem_size = 0;
1226 }
1227
1228 vfree(drv_info);
1229 }
1230 EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump);
1231
1232 /*
1233 * CFG802.11 network device handler for statistics retrieval.
1234 */
1235 static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
1236 {
1237 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1238
1239 return &priv->stats;
1240 }
1241
1242 static u16
1243 mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb,
1244 void *accel_priv, select_queue_fallback_t fallback)
1245 {
1246 skb->priority = cfg80211_classify8021d(skb, NULL);
1247 return mwifiex_1d_to_wmm_queue[skb->priority];
1248 }
1249
1250 /* Network device handlers */
1251 static const struct net_device_ops mwifiex_netdev_ops = {
1252 .ndo_open = mwifiex_open,
1253 .ndo_stop = mwifiex_close,
1254 .ndo_start_xmit = mwifiex_hard_start_xmit,
1255 .ndo_set_mac_address = mwifiex_set_mac_address,
1256 .ndo_validate_addr = eth_validate_addr,
1257 .ndo_tx_timeout = mwifiex_tx_timeout,
1258 .ndo_get_stats = mwifiex_get_stats,
1259 .ndo_set_rx_mode = mwifiex_set_multicast_list,
1260 .ndo_select_queue = mwifiex_netdev_select_wmm_queue,
1261 };
1262
1263 /*
1264 * This function initializes the private structure parameters.
1265 *
1266 * The following wait queues are initialized -
1267 * - IOCTL wait queue
1268 * - Command wait queue
1269 * - Statistics wait queue
1270 *
1271 * ...and the following default parameters are set -
1272 * - Current key index : Set to 0
1273 * - Rate index : Set to auto
1274 * - Media connected : Set to disconnected
1275 * - Adhoc link sensed : Set to false
1276 * - Nick name : Set to null
1277 * - Number of Tx timeout : Set to 0
1278 * - Device address : Set to current address
1279 * - Rx histogram statistc : Set to 0
1280 *
1281 * In addition, the CFG80211 work queue is also created.
1282 */
1283 void mwifiex_init_priv_params(struct mwifiex_private *priv,
1284 struct net_device *dev)
1285 {
1286 dev->netdev_ops = &mwifiex_netdev_ops;
1287 dev->needs_free_netdev = true;
1288 /* Initialize private structure */
1289 priv->current_key_index = 0;
1290 priv->media_connected = false;
1291 memset(priv->mgmt_ie, 0,
1292 sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX);
1293 priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK;
1294 priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK;
1295 priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK;
1296 priv->gen_idx = MWIFIEX_AUTO_IDX_MASK;
1297 priv->num_tx_timeout = 0;
1298 ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr);
1299 memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN);
1300
1301 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
1302 GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
1303 priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL);
1304 if (priv->hist_data)
1305 mwifiex_hist_data_reset(priv);
1306 }
1307 }
1308
1309 /*
1310 * This function check if command is pending.
1311 */
1312 int is_command_pending(struct mwifiex_adapter *adapter)
1313 {
1314 unsigned long flags;
1315 int is_cmd_pend_q_empty;
1316
1317 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
1318 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
1319 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
1320
1321 return !is_cmd_pend_q_empty;
1322 }
1323
1324 /*
1325 * This is the RX work queue function.
1326 *
1327 * It handles the RX operations.
1328 */
1329 static void mwifiex_rx_work_queue(struct work_struct *work)
1330 {
1331 struct mwifiex_adapter *adapter =
1332 container_of(work, struct mwifiex_adapter, rx_work);
1333
1334 if (adapter->surprise_removed)
1335 return;
1336 mwifiex_process_rx(adapter);
1337 }
1338
1339 /*
1340 * This is the main work queue function.
1341 *
1342 * It handles the main process, which in turn handles the complete
1343 * driver operations.
1344 */
1345 static void mwifiex_main_work_queue(struct work_struct *work)
1346 {
1347 struct mwifiex_adapter *adapter =
1348 container_of(work, struct mwifiex_adapter, main_work);
1349
1350 if (adapter->surprise_removed)
1351 return;
1352 mwifiex_main_process(adapter);
1353 }
1354
1355 /*
1356 * This function gets called during PCIe function level reset. Required
1357 * code is extracted from mwifiex_remove_card()
1358 */
1359 int
1360 mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
1361 {
1362 struct mwifiex_private *priv;
1363 int i;
1364
1365 if (!adapter)
1366 goto exit_return;
1367
1368 wait_for_completion(adapter->fw_done);
1369 /* Caller should ensure we aren't suspending while this happens */
1370 reinit_completion(adapter->fw_done);
1371
1372 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1373 mwifiex_deauthenticate(priv, NULL);
1374
1375 /* We can no longer handle interrupts once we start doing the teardown
1376 * below.
1377 */
1378 if (adapter->if_ops.disable_int)
1379 adapter->if_ops.disable_int(adapter);
1380
1381 adapter->surprise_removed = true;
1382 mwifiex_terminate_workqueue(adapter);
1383
1384 /* Stop data */
1385 for (i = 0; i < adapter->priv_num; i++) {
1386 priv = adapter->priv[i];
1387 if (priv && priv->netdev) {
1388 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
1389 if (netif_carrier_ok(priv->netdev))
1390 netif_carrier_off(priv->netdev);
1391 netif_device_detach(priv->netdev);
1392 }
1393 }
1394
1395 mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n");
1396
1397 mwifiex_shutdown_drv(adapter);
1398 if (adapter->if_ops.down_dev)
1399 adapter->if_ops.down_dev(adapter);
1400
1401 mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n");
1402 if (atomic_read(&adapter->rx_pending) ||
1403 atomic_read(&adapter->tx_pending) ||
1404 atomic_read(&adapter->cmd_pending)) {
1405 mwifiex_dbg(adapter, ERROR,
1406 "rx_pending=%d, tx_pending=%d,\t"
1407 "cmd_pending=%d\n",
1408 atomic_read(&adapter->rx_pending),
1409 atomic_read(&adapter->tx_pending),
1410 atomic_read(&adapter->cmd_pending));
1411 }
1412
1413 for (i = 0; i < adapter->priv_num; i++) {
1414 priv = adapter->priv[i];
1415 if (!priv)
1416 continue;
1417 rtnl_lock();
1418 if (priv->netdev &&
1419 priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED)
1420 mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
1421 rtnl_unlock();
1422 }
1423 vfree(adapter->chan_stats);
1424
1425 mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
1426 exit_return:
1427 return 0;
1428 }
1429 EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw);
1430
1431 /* This function gets called during PCIe function level reset. Required
1432 * code is extracted from mwifiex_add_card()
1433 */
1434 int
1435 mwifiex_reinit_sw(struct mwifiex_adapter *adapter)
1436 {
1437 int ret;
1438
1439 mwifiex_init_lock_list(adapter);
1440 if (adapter->if_ops.up_dev)
1441 adapter->if_ops.up_dev(adapter);
1442
1443 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1444 adapter->surprise_removed = false;
1445 init_waitqueue_head(&adapter->init_wait_q);
1446 adapter->is_suspended = false;
1447 adapter->hs_activated = false;
1448 adapter->is_cmd_timedout = 0;
1449 init_waitqueue_head(&adapter->hs_activate_wait_q);
1450 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1451 adapter->cmd_wait_q.status = 0;
1452 adapter->scan_wait_q_woken = false;
1453
1454 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1455 adapter->rx_work_enabled = true;
1456
1457 adapter->workqueue =
1458 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1459 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1460 if (!adapter->workqueue)
1461 goto err_kmalloc;
1462
1463 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1464
1465 if (adapter->rx_work_enabled) {
1466 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1467 WQ_HIGHPRI |
1468 WQ_MEM_RECLAIM |
1469 WQ_UNBOUND, 1);
1470 if (!adapter->rx_workqueue)
1471 goto err_kmalloc;
1472 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1473 }
1474
1475 /* Register the device. Fill up the private data structure with
1476 * relevant information from the card. Some code extracted from
1477 * mwifiex_register_dev()
1478 */
1479 mwifiex_dbg(adapter, INFO, "%s, mwifiex_init_hw_fw()...\n", __func__);
1480
1481 if (mwifiex_init_hw_fw(adapter, false)) {
1482 mwifiex_dbg(adapter, ERROR,
1483 "%s: firmware init failed\n", __func__);
1484 goto err_init_fw;
1485 }
1486
1487 /* _mwifiex_fw_dpc() does its own cleanup */
1488 ret = _mwifiex_fw_dpc(adapter->firmware, adapter);
1489 if (ret) {
1490 pr_err("Failed to bring up adapter: %d\n", ret);
1491 return ret;
1492 }
1493 mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
1494
1495 return 0;
1496
1497 err_init_fw:
1498 mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__);
1499 if (adapter->if_ops.unregister_dev)
1500 adapter->if_ops.unregister_dev(adapter);
1501
1502 err_kmalloc:
1503 adapter->surprise_removed = true;
1504 mwifiex_terminate_workqueue(adapter);
1505 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1506 mwifiex_dbg(adapter, ERROR,
1507 "info: %s: shutdown mwifiex\n", __func__);
1508 mwifiex_shutdown_drv(adapter);
1509 }
1510
1511 complete_all(adapter->fw_done);
1512 mwifiex_dbg(adapter, INFO, "%s, error\n", __func__);
1513
1514 return -1;
1515 }
1516 EXPORT_SYMBOL_GPL(mwifiex_reinit_sw);
1517
1518 static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv)
1519 {
1520 struct mwifiex_adapter *adapter = priv;
1521
1522 dev_dbg(adapter->dev, "%s: wake by wifi", __func__);
1523 adapter->wake_by_wifi = true;
1524 disable_irq_nosync(irq);
1525
1526 /* Notify PM core we are wakeup source */
1527 pm_wakeup_event(adapter->dev, 0);
1528 pm_system_wakeup();
1529
1530 return IRQ_HANDLED;
1531 }
1532
1533 static void mwifiex_probe_of(struct mwifiex_adapter *adapter)
1534 {
1535 int ret;
1536 struct device *dev = adapter->dev;
1537
1538 if (!dev->of_node)
1539 goto err_exit;
1540
1541 adapter->dt_node = dev->of_node;
1542 adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0);
1543 if (!adapter->irq_wakeup) {
1544 dev_dbg(dev, "fail to parse irq_wakeup from device tree\n");
1545 goto err_exit;
1546 }
1547
1548 ret = devm_request_irq(dev, adapter->irq_wakeup,
1549 mwifiex_irq_wakeup_handler, IRQF_TRIGGER_LOW,
1550 "wifi_wake", adapter);
1551 if (ret) {
1552 dev_err(dev, "Failed to request irq_wakeup %d (%d)\n",
1553 adapter->irq_wakeup, ret);
1554 goto err_exit;
1555 }
1556
1557 disable_irq(adapter->irq_wakeup);
1558 if (device_init_wakeup(dev, true)) {
1559 dev_err(dev, "fail to init wakeup for mwifiex\n");
1560 goto err_exit;
1561 }
1562 return;
1563
1564 err_exit:
1565 adapter->irq_wakeup = -1;
1566 }
1567
1568 /*
1569 * This function adds the card.
1570 *
1571 * This function follows the following major steps to set up the device -
1572 * - Initialize software. This includes probing the card, registering
1573 * the interface operations table, and allocating/initializing the
1574 * adapter structure
1575 * - Set up the netlink socket
1576 * - Create and start the main work queue
1577 * - Register the device
1578 * - Initialize firmware and hardware
1579 * - Add logical interfaces
1580 */
1581 int
1582 mwifiex_add_card(void *card, struct completion *fw_done,
1583 struct mwifiex_if_ops *if_ops, u8 iface_type,
1584 struct device *dev)
1585 {
1586 struct mwifiex_adapter *adapter;
1587
1588 if (mwifiex_register(card, dev, if_ops, (void **)&adapter)) {
1589 pr_err("%s: software init failed\n", __func__);
1590 goto err_init_sw;
1591 }
1592
1593 mwifiex_probe_of(adapter);
1594
1595 adapter->iface_type = iface_type;
1596 adapter->fw_done = fw_done;
1597
1598 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1599 adapter->surprise_removed = false;
1600 init_waitqueue_head(&adapter->init_wait_q);
1601 adapter->is_suspended = false;
1602 adapter->hs_activated = false;
1603 init_waitqueue_head(&adapter->hs_activate_wait_q);
1604 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1605 adapter->cmd_wait_q.status = 0;
1606 adapter->scan_wait_q_woken = false;
1607
1608 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB) {
1609 adapter->rx_work_enabled = true;
1610 pr_notice("rx work enabled, cpus %d\n", num_possible_cpus());
1611 }
1612
1613 adapter->workqueue =
1614 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1615 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1616 if (!adapter->workqueue)
1617 goto err_kmalloc;
1618
1619 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1620
1621 if (adapter->rx_work_enabled) {
1622 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1623 WQ_HIGHPRI |
1624 WQ_MEM_RECLAIM |
1625 WQ_UNBOUND, 1);
1626 if (!adapter->rx_workqueue)
1627 goto err_kmalloc;
1628
1629 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1630 }
1631
1632 /* Register the device. Fill up the private data structure with relevant
1633 information from the card. */
1634 if (adapter->if_ops.register_dev(adapter)) {
1635 pr_err("%s: failed to register mwifiex device\n", __func__);
1636 goto err_registerdev;
1637 }
1638
1639 if (mwifiex_init_hw_fw(adapter, true)) {
1640 pr_err("%s: firmware init failed\n", __func__);
1641 goto err_init_fw;
1642 }
1643
1644 return 0;
1645
1646 err_init_fw:
1647 pr_debug("info: %s: unregister device\n", __func__);
1648 if (adapter->if_ops.unregister_dev)
1649 adapter->if_ops.unregister_dev(adapter);
1650 err_registerdev:
1651 adapter->surprise_removed = true;
1652 mwifiex_terminate_workqueue(adapter);
1653 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1654 pr_debug("info: %s: shutdown mwifiex\n", __func__);
1655 mwifiex_shutdown_drv(adapter);
1656 }
1657 err_kmalloc:
1658 mwifiex_free_adapter(adapter);
1659
1660 err_init_sw:
1661
1662 return -1;
1663 }
1664 EXPORT_SYMBOL_GPL(mwifiex_add_card);
1665
1666 /*
1667 * This function removes the card.
1668 *
1669 * This function follows the following major steps to remove the device -
1670 * - Stop data traffic
1671 * - Shutdown firmware
1672 * - Remove the logical interfaces
1673 * - Terminate the work queue
1674 * - Unregister the device
1675 * - Free the adapter structure
1676 */
1677 int mwifiex_remove_card(struct mwifiex_adapter *adapter)
1678 {
1679 struct mwifiex_private *priv = NULL;
1680 int i;
1681
1682 if (!adapter)
1683 goto exit_remove;
1684
1685 /* We can no longer handle interrupts once we start doing the teardown
1686 * below. */
1687 if (adapter->if_ops.disable_int)
1688 adapter->if_ops.disable_int(adapter);
1689
1690 adapter->surprise_removed = true;
1691
1692 mwifiex_terminate_workqueue(adapter);
1693
1694 /* Stop data */
1695 for (i = 0; i < adapter->priv_num; i++) {
1696 priv = adapter->priv[i];
1697 if (priv && priv->netdev) {
1698 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
1699 if (netif_carrier_ok(priv->netdev))
1700 netif_carrier_off(priv->netdev);
1701 }
1702 }
1703
1704 mwifiex_dbg(adapter, CMD,
1705 "cmd: calling mwifiex_shutdown_drv...\n");
1706
1707 mwifiex_shutdown_drv(adapter);
1708 mwifiex_dbg(adapter, CMD,
1709 "cmd: mwifiex_shutdown_drv done\n");
1710 if (atomic_read(&adapter->rx_pending) ||
1711 atomic_read(&adapter->tx_pending) ||
1712 atomic_read(&adapter->cmd_pending)) {
1713 mwifiex_dbg(adapter, ERROR,
1714 "rx_pending=%d, tx_pending=%d,\t"
1715 "cmd_pending=%d\n",
1716 atomic_read(&adapter->rx_pending),
1717 atomic_read(&adapter->tx_pending),
1718 atomic_read(&adapter->cmd_pending));
1719 }
1720
1721 for (i = 0; i < adapter->priv_num; i++) {
1722 priv = adapter->priv[i];
1723
1724 if (!priv)
1725 continue;
1726
1727 rtnl_lock();
1728 if (priv->netdev &&
1729 priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED)
1730 mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
1731 rtnl_unlock();
1732 }
1733 vfree(adapter->chan_stats);
1734
1735 wiphy_unregister(adapter->wiphy);
1736 wiphy_free(adapter->wiphy);
1737
1738 if (adapter->irq_wakeup >= 0)
1739 device_init_wakeup(adapter->dev, false);
1740
1741 /* Unregister device */
1742 mwifiex_dbg(adapter, INFO,
1743 "info: unregister device\n");
1744 if (adapter->if_ops.unregister_dev)
1745 adapter->if_ops.unregister_dev(adapter);
1746 /* Free adapter structure */
1747 mwifiex_dbg(adapter, INFO,
1748 "info: free adapter\n");
1749 mwifiex_free_adapter(adapter);
1750
1751 exit_remove:
1752 return 0;
1753 }
1754 EXPORT_SYMBOL_GPL(mwifiex_remove_card);
1755
1756 void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
1757 const char *fmt, ...)
1758 {
1759 struct va_format vaf;
1760 va_list args;
1761
1762 if (!(adapter->debug_mask & mask))
1763 return;
1764
1765 va_start(args, fmt);
1766
1767 vaf.fmt = fmt;
1768 vaf.va = &args;
1769
1770 if (adapter->dev)
1771 dev_info(adapter->dev, "%pV", &vaf);
1772 else
1773 pr_info("%pV", &vaf);
1774
1775 va_end(args);
1776 }
1777 EXPORT_SYMBOL_GPL(_mwifiex_dbg);
1778
1779 /*
1780 * This function initializes the module.
1781 *
1782 * The debug FS is also initialized if configured.
1783 */
1784 static int
1785 mwifiex_init_module(void)
1786 {
1787 #ifdef CONFIG_DEBUG_FS
1788 mwifiex_debugfs_init();
1789 #endif
1790 return 0;
1791 }
1792
1793 /*
1794 * This function cleans up the module.
1795 *
1796 * The debug FS is removed if available.
1797 */
1798 static void
1799 mwifiex_cleanup_module(void)
1800 {
1801 #ifdef CONFIG_DEBUG_FS
1802 mwifiex_debugfs_remove();
1803 #endif
1804 }
1805
1806 module_init(mwifiex_init_module);
1807 module_exit(mwifiex_cleanup_module);
1808
1809 MODULE_AUTHOR("Marvell International Ltd.");
1810 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION);
1811 MODULE_VERSION(VERSION);
1812 MODULE_LICENSE("GPL v2");
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