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Linux 4.16.11
[linux/fpc-iii.git] / drivers / net / wireless / marvell / mwifiex / main.c
blob12e73995033229d8dee1ad002a4ea4c4dfd462ef
1 /*
2 * Marvell Wireless LAN device driver: major functions
3 *
4 * Copyright (C) 2011-2014, Marvell International Ltd.
5 *
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13 *
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
18 */
19
20 #include <linux/suspend.h>
21
22 #include "main.h"
23 #include "wmm.h"
24 #include "cfg80211.h"
25 #include "11n.h"
26
27 #define VERSION "1.0"
28 #define MFG_FIRMWARE "mwifiex_mfg.bin"
29
30 static unsigned int debug_mask = MWIFIEX_DEFAULT_DEBUG_MASK;
31 module_param(debug_mask, uint, 0);
32 MODULE_PARM_DESC(debug_mask, "bitmap for debug flags");
33
34 const char driver_version[] = "mwifiex " VERSION " (%s) ";
35 static char *cal_data_cfg;
36 module_param(cal_data_cfg, charp, 0);
37
38 static unsigned short driver_mode;
39 module_param(driver_mode, ushort, 0);
40 MODULE_PARM_DESC(driver_mode,
41 "station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7");
42
43 bool mfg_mode;
44 module_param(mfg_mode, bool, 0);
45 MODULE_PARM_DESC(mfg_mode, "manufacturing mode enable:1, disable:0");
46
47 bool aggr_ctrl;
48 module_param(aggr_ctrl, bool, 0000);
49 MODULE_PARM_DESC(aggr_ctrl, "usb tx aggregation enable:1, disable:0");
50
51 /*
52 * This function registers the device and performs all the necessary
53 * initializations.
54 *
55 * The following initialization operations are performed -
56 * - Allocate adapter structure
57 * - Save interface specific operations table in adapter
58 * - Call interface specific initialization routine
59 * - Allocate private structures
60 * - Set default adapter structure parameters
61 * - Initialize locks
62 *
63 * In case of any errors during inittialization, this function also ensures
64 * proper cleanup before exiting.
65 */
66 static int mwifiex_register(void *card, struct device *dev,
67 struct mwifiex_if_ops *if_ops, void **padapter)
68 {
69 struct mwifiex_adapter *adapter;
70 int i;
71
72 adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL);
73 if (!adapter)
74 return -ENOMEM;
75
76 *padapter = adapter;
77 adapter->dev = dev;
78 adapter->card = card;
79
80 /* Save interface specific operations in adapter */
81 memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));
82 adapter->debug_mask = debug_mask;
83
84 /* card specific initialization has been deferred until now .. */
85 if (adapter->if_ops.init_if)
86 if (adapter->if_ops.init_if(adapter))
87 goto error;
88
89 adapter->priv_num = 0;
90
91 for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) {
92 /* Allocate memory for private structure */
93 adapter->priv[i] =
94 kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL);
95 if (!adapter->priv[i])
96 goto error;
97
98 adapter->priv[i]->adapter = adapter;
99 adapter->priv_num++;
100 }
101 mwifiex_init_lock_list(adapter);
102
103 timer_setup(&adapter->cmd_timer, mwifiex_cmd_timeout_func, 0);
104
105 return 0;
106
107 error:
108 mwifiex_dbg(adapter, ERROR,
109 "info: leave mwifiex_register with error\n");
110
111 for (i = 0; i < adapter->priv_num; i++)
112 kfree(adapter->priv[i]);
113
114 kfree(adapter);
115
116 return -1;
117 }
118
119 /*
120 * This function unregisters the device and performs all the necessary
121 * cleanups.
122 *
123 * The following cleanup operations are performed -
124 * - Free the timers
125 * - Free beacon buffers
126 * - Free private structures
127 * - Free adapter structure
128 */
129 static int mwifiex_unregister(struct mwifiex_adapter *adapter)
130 {
131 s32 i;
132
133 if (adapter->if_ops.cleanup_if)
134 adapter->if_ops.cleanup_if(adapter);
135
136 del_timer_sync(&adapter->cmd_timer);
137
138 /* Free private structures */
139 for (i = 0; i < adapter->priv_num; i++) {
140 if (adapter->priv[i]) {
141 mwifiex_free_curr_bcn(adapter->priv[i]);
142 kfree(adapter->priv[i]);
143 }
144 }
145
146 if (adapter->nd_info) {
147 for (i = 0 ; i < adapter->nd_info->n_matches ; i++)
148 kfree(adapter->nd_info->matches[i]);
149 kfree(adapter->nd_info);
150 adapter->nd_info = NULL;
151 }
152
153 kfree(adapter->regd);
154
155 kfree(adapter);
156 return 0;
157 }
158
159 void mwifiex_queue_main_work(struct mwifiex_adapter *adapter)
160 {
161 unsigned long flags;
162
163 spin_lock_irqsave(&adapter->main_proc_lock, flags);
164 if (adapter->mwifiex_processing) {
165 adapter->more_task_flag = true;
166 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
167 } else {
168 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
169 queue_work(adapter->workqueue, &adapter->main_work);
170 }
171 }
172 EXPORT_SYMBOL_GPL(mwifiex_queue_main_work);
173
174 static void mwifiex_queue_rx_work(struct mwifiex_adapter *adapter)
175 {
176 unsigned long flags;
177
178 spin_lock_irqsave(&adapter->rx_proc_lock, flags);
179 if (adapter->rx_processing) {
180 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
181 } else {
182 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
183 queue_work(adapter->rx_workqueue, &adapter->rx_work);
184 }
185 }
186
187 static int mwifiex_process_rx(struct mwifiex_adapter *adapter)
188 {
189 unsigned long flags;
190 struct sk_buff *skb;
191 struct mwifiex_rxinfo *rx_info;
192
193 spin_lock_irqsave(&adapter->rx_proc_lock, flags);
194 if (adapter->rx_processing || adapter->rx_locked) {
195 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
196 goto exit_rx_proc;
197 } else {
198 adapter->rx_processing = true;
199 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
200 }
201
202 /* Check for Rx data */
203 while ((skb = skb_dequeue(&adapter->rx_data_q))) {
204 atomic_dec(&adapter->rx_pending);
205 if ((adapter->delay_main_work ||
206 adapter->iface_type == MWIFIEX_USB) &&
207 (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {
208 if (adapter->if_ops.submit_rem_rx_urbs)
209 adapter->if_ops.submit_rem_rx_urbs(adapter);
210 adapter->delay_main_work = false;
211 mwifiex_queue_main_work(adapter);
212 }
213 rx_info = MWIFIEX_SKB_RXCB(skb);
214 if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) {
215 if (adapter->if_ops.deaggr_pkt)
216 adapter->if_ops.deaggr_pkt(adapter, skb);
217 dev_kfree_skb_any(skb);
218 } else {
219 mwifiex_handle_rx_packet(adapter, skb);
220 }
221 }
222 spin_lock_irqsave(&adapter->rx_proc_lock, flags);
223 adapter->rx_processing = false;
224 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
225
226 exit_rx_proc:
227 return 0;
228 }
229
230 /*
231 * The main process.
232 *
233 * This function is the main procedure of the driver and handles various driver
234 * operations. It runs in a loop and provides the core functionalities.
235 *
236 * The main responsibilities of this function are -
237 * - Ensure concurrency control
238 * - Handle pending interrupts and call interrupt handlers
239 * - Wake up the card if required
240 * - Handle command responses and call response handlers
241 * - Handle events and call event handlers
242 * - Execute pending commands
243 * - Transmit pending data packets
244 */
245 int mwifiex_main_process(struct mwifiex_adapter *adapter)
246 {
247 int ret = 0;
248 unsigned long flags;
249
250 spin_lock_irqsave(&adapter->main_proc_lock, flags);
251
252 /* Check if already processing */
253 if (adapter->mwifiex_processing || adapter->main_locked) {
254 adapter->more_task_flag = true;
255 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
256 return 0;
257 } else {
258 adapter->mwifiex_processing = true;
259 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
260 }
261 process_start:
262 do {
263 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
264 break;
265
266 /* For non-USB interfaces, If we process interrupts first, it
267 * would increase RX pending even further. Avoid this by
268 * checking if rx_pending has crossed high threshold and
269 * schedule rx work queue and then process interrupts.
270 * For USB interface, there are no interrupts. We already have
271 * HIGH_RX_PENDING check in usb.c
272 */
273 if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING &&
274 adapter->iface_type != MWIFIEX_USB) {
275 adapter->delay_main_work = true;
276 mwifiex_queue_rx_work(adapter);
277 break;
278 }
279
280 /* Handle pending interrupt if any */
281 if (adapter->int_status) {
282 if (adapter->hs_activated)
283 mwifiex_process_hs_config(adapter);
284 if (adapter->if_ops.process_int_status)
285 adapter->if_ops.process_int_status(adapter);
286 }
287
288 if (adapter->rx_work_enabled && adapter->data_received)
289 mwifiex_queue_rx_work(adapter);
290
291 /* Need to wake up the card ? */
292 if ((adapter->ps_state == PS_STATE_SLEEP) &&
293 (adapter->pm_wakeup_card_req &&
294 !adapter->pm_wakeup_fw_try) &&
295 (is_command_pending(adapter) ||
296 !skb_queue_empty(&adapter->tx_data_q) ||
297 !mwifiex_bypass_txlist_empty(adapter) ||
298 !mwifiex_wmm_lists_empty(adapter))) {
299 adapter->pm_wakeup_fw_try = true;
300 mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3));
301 adapter->if_ops.wakeup(adapter);
302 continue;
303 }
304
305 if (IS_CARD_RX_RCVD(adapter)) {
306 adapter->data_received = false;
307 adapter->pm_wakeup_fw_try = false;
308 del_timer(&adapter->wakeup_timer);
309 if (adapter->ps_state == PS_STATE_SLEEP)
310 adapter->ps_state = PS_STATE_AWAKE;
311 } else {
312 /* We have tried to wakeup the card already */
313 if (adapter->pm_wakeup_fw_try)
314 break;
315 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
316 mwifiex_check_ps_cond(adapter);
317
318 if (adapter->ps_state != PS_STATE_AWAKE)
319 break;
320 if (adapter->tx_lock_flag) {
321 if (adapter->iface_type == MWIFIEX_USB) {
322 if (!adapter->usb_mc_setup)
323 break;
324 } else
325 break;
326 }
327
328 if ((!adapter->scan_chan_gap_enabled &&
329 adapter->scan_processing) || adapter->data_sent ||
330 mwifiex_is_tdls_chan_switching
331 (mwifiex_get_priv(adapter,
332 MWIFIEX_BSS_ROLE_STA)) ||
333 (mwifiex_wmm_lists_empty(adapter) &&
334 mwifiex_bypass_txlist_empty(adapter) &&
335 skb_queue_empty(&adapter->tx_data_q))) {
336 if (adapter->cmd_sent || adapter->curr_cmd ||
337 !mwifiex_is_send_cmd_allowed
338 (mwifiex_get_priv(adapter,
339 MWIFIEX_BSS_ROLE_STA)) ||
340 (!is_command_pending(adapter)))
341 break;
342 }
343 }
344
345 /* Check for event */
346 if (adapter->event_received) {
347 adapter->event_received = false;
348 mwifiex_process_event(adapter);
349 }
350
351 /* Check for Cmd Resp */
352 if (adapter->cmd_resp_received) {
353 adapter->cmd_resp_received = false;
354 mwifiex_process_cmdresp(adapter);
355
356 /* call mwifiex back when init_fw is done */
357 if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) {
358 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
359 mwifiex_init_fw_complete(adapter);
360 }
361 }
362
363 /* Check if we need to confirm Sleep Request
364 received previously */
365 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
366 mwifiex_check_ps_cond(adapter);
367
368 /* * The ps_state may have been changed during processing of
369 * Sleep Request event.
370 */
371 if ((adapter->ps_state == PS_STATE_SLEEP) ||
372 (adapter->ps_state == PS_STATE_PRE_SLEEP) ||
373 (adapter->ps_state == PS_STATE_SLEEP_CFM)) {
374 continue;
375 }
376
377 if (adapter->tx_lock_flag) {
378 if (adapter->iface_type == MWIFIEX_USB) {
379 if (!adapter->usb_mc_setup)
380 continue;
381 } else
382 continue;
383 }
384
385 if (!adapter->cmd_sent && !adapter->curr_cmd &&
386 mwifiex_is_send_cmd_allowed
387 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
388 if (mwifiex_exec_next_cmd(adapter) == -1) {
389 ret = -1;
390 break;
391 }
392 }
393
394 /** If USB Multi channel setup ongoing,
395 * wait for ready to tx data.
396 */
397 if (adapter->iface_type == MWIFIEX_USB &&
398 adapter->usb_mc_setup)
399 continue;
400
401 if ((adapter->scan_chan_gap_enabled ||
402 !adapter->scan_processing) &&
403 !adapter->data_sent &&
404 !skb_queue_empty(&adapter->tx_data_q)) {
405 mwifiex_process_tx_queue(adapter);
406 if (adapter->hs_activated) {
407 adapter->is_hs_configured = false;
408 mwifiex_hs_activated_event
409 (mwifiex_get_priv
410 (adapter, MWIFIEX_BSS_ROLE_ANY),
411 false);
412 }
413 }
414
415 if ((adapter->scan_chan_gap_enabled ||
416 !adapter->scan_processing) &&
417 !adapter->data_sent &&
418 !mwifiex_bypass_txlist_empty(adapter) &&
419 !mwifiex_is_tdls_chan_switching
420 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
421 mwifiex_process_bypass_tx(adapter);
422 if (adapter->hs_activated) {
423 adapter->is_hs_configured = false;
424 mwifiex_hs_activated_event
425 (mwifiex_get_priv
426 (adapter, MWIFIEX_BSS_ROLE_ANY),
427 false);
428 }
429 }
430
431 if ((adapter->scan_chan_gap_enabled ||
432 !adapter->scan_processing) &&
433 !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) &&
434 !mwifiex_is_tdls_chan_switching
435 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
436 mwifiex_wmm_process_tx(adapter);
437 if (adapter->hs_activated) {
438 adapter->is_hs_configured = false;
439 mwifiex_hs_activated_event
440 (mwifiex_get_priv
441 (adapter, MWIFIEX_BSS_ROLE_ANY),
442 false);
443 }
444 }
445
446 if (adapter->delay_null_pkt && !adapter->cmd_sent &&
447 !adapter->curr_cmd && !is_command_pending(adapter) &&
448 (mwifiex_wmm_lists_empty(adapter) &&
449 mwifiex_bypass_txlist_empty(adapter) &&
450 skb_queue_empty(&adapter->tx_data_q))) {
451 if (!mwifiex_send_null_packet
452 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
453 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
454 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) {
455 adapter->delay_null_pkt = false;
456 adapter->ps_state = PS_STATE_SLEEP;
457 }
458 break;
459 }
460 } while (true);
461
462 spin_lock_irqsave(&adapter->main_proc_lock, flags);
463 if (adapter->more_task_flag) {
464 adapter->more_task_flag = false;
465 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
466 goto process_start;
467 }
468 adapter->mwifiex_processing = false;
469 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
470
471 return ret;
472 }
473 EXPORT_SYMBOL_GPL(mwifiex_main_process);
474
475 /*
476 * This function frees the adapter structure.
477 *
478 * Additionally, this closes the netlink socket, frees the timers
479 * and private structures.
480 */
481 static void mwifiex_free_adapter(struct mwifiex_adapter *adapter)
482 {
483 if (!adapter) {
484 pr_err("%s: adapter is NULL\n", __func__);
485 return;
486 }
487
488 mwifiex_unregister(adapter);
489 pr_debug("info: %s: free adapter\n", __func__);
490 }
491
492 /*
493 * This function cancels all works in the queue and destroys
494 * the main workqueue.
495 */
496 static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter)
497 {
498 if (adapter->workqueue) {
499 flush_workqueue(adapter->workqueue);
500 destroy_workqueue(adapter->workqueue);
501 adapter->workqueue = NULL;
502 }
503
504 if (adapter->rx_workqueue) {
505 flush_workqueue(adapter->rx_workqueue);
506 destroy_workqueue(adapter->rx_workqueue);
507 adapter->rx_workqueue = NULL;
508 }
509 }
510
511 /*
512 * This function gets firmware and initializes it.
513 *
514 * The main initialization steps followed are -
515 * - Download the correct firmware to card
516 * - Issue the init commands to firmware
517 */
518 static int _mwifiex_fw_dpc(const struct firmware *firmware, void *context)
519 {
520 int ret;
521 char fmt[64];
522 struct mwifiex_adapter *adapter = context;
523 struct mwifiex_fw_image fw;
524 bool init_failed = false;
525 struct wireless_dev *wdev;
526 struct completion *fw_done = adapter->fw_done;
527
528 if (!firmware) {
529 mwifiex_dbg(adapter, ERROR,
530 "Failed to get firmware %s\n", adapter->fw_name);
531 goto err_dnld_fw;
532 }
533
534 memset(&fw, 0, sizeof(struct mwifiex_fw_image));
535 adapter->firmware = firmware;
536 fw.fw_buf = (u8 *) adapter->firmware->data;
537 fw.fw_len = adapter->firmware->size;
538
539 if (adapter->if_ops.dnld_fw) {
540 ret = adapter->if_ops.dnld_fw(adapter, &fw);
541 } else {
542 ret = mwifiex_dnld_fw(adapter, &fw);
543 }
544
545 if (ret == -1)
546 goto err_dnld_fw;
547
548 mwifiex_dbg(adapter, MSG, "WLAN FW is active\n");
549
550 if (cal_data_cfg) {
551 if ((request_firmware(&adapter->cal_data, cal_data_cfg,
552 adapter->dev)) < 0)
553 mwifiex_dbg(adapter, ERROR,
554 "Cal data request_firmware() failed\n");
555 }
556
557 /* enable host interrupt after fw dnld is successful */
558 if (adapter->if_ops.enable_int) {
559 if (adapter->if_ops.enable_int(adapter))
560 goto err_dnld_fw;
561 }
562
563 adapter->init_wait_q_woken = false;
564 ret = mwifiex_init_fw(adapter);
565 if (ret == -1) {
566 goto err_init_fw;
567 } else if (!ret) {
568 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
569 goto done;
570 }
571 /* Wait for mwifiex_init to complete */
572 if (!adapter->mfg_mode) {
573 wait_event_interruptible(adapter->init_wait_q,
574 adapter->init_wait_q_woken);
575 if (adapter->hw_status != MWIFIEX_HW_STATUS_READY)
576 goto err_init_fw;
577 }
578
579 if (!adapter->wiphy) {
580 if (mwifiex_register_cfg80211(adapter)) {
581 mwifiex_dbg(adapter, ERROR,
582 "cannot register with cfg80211\n");
583 goto err_init_fw;
584 }
585 }
586
587 if (mwifiex_init_channel_scan_gap(adapter)) {
588 mwifiex_dbg(adapter, ERROR,
589 "could not init channel stats table\n");
590 goto err_init_chan_scan;
591 }
592
593 if (driver_mode) {
594 driver_mode &= MWIFIEX_DRIVER_MODE_BITMASK;
595 driver_mode |= MWIFIEX_DRIVER_MODE_STA;
596 }
597
598 rtnl_lock();
599 /* Create station interface by default */
600 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM,
601 NL80211_IFTYPE_STATION, NULL);
602 if (IS_ERR(wdev)) {
603 mwifiex_dbg(adapter, ERROR,
604 "cannot create default STA interface\n");
605 rtnl_unlock();
606 goto err_add_intf;
607 }
608
609 if (driver_mode & MWIFIEX_DRIVER_MODE_UAP) {
610 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM,
611 NL80211_IFTYPE_AP, NULL);
612 if (IS_ERR(wdev)) {
613 mwifiex_dbg(adapter, ERROR,
614 "cannot create AP interface\n");
615 rtnl_unlock();
616 goto err_add_intf;
617 }
618 }
619
620 if (driver_mode & MWIFIEX_DRIVER_MODE_P2P) {
621 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", NET_NAME_ENUM,
622 NL80211_IFTYPE_P2P_CLIENT, NULL);
623 if (IS_ERR(wdev)) {
624 mwifiex_dbg(adapter, ERROR,
625 "cannot create p2p client interface\n");
626 rtnl_unlock();
627 goto err_add_intf;
628 }
629 }
630 rtnl_unlock();
631
632 mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);
633 mwifiex_dbg(adapter, MSG, "driver_version = %s\n", fmt);
634 goto done;
635
636 err_add_intf:
637 vfree(adapter->chan_stats);
638 err_init_chan_scan:
639 wiphy_unregister(adapter->wiphy);
640 wiphy_free(adapter->wiphy);
641 err_init_fw:
642 if (adapter->if_ops.disable_int)
643 adapter->if_ops.disable_int(adapter);
644 err_dnld_fw:
645 mwifiex_dbg(adapter, ERROR,
646 "info: %s: unregister device\n", __func__);
647 if (adapter->if_ops.unregister_dev)
648 adapter->if_ops.unregister_dev(adapter);
649
650 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 mwifiex_free_cmd_buffers(adapter);
657 }
658
659 init_failed = true;
660 done:
661 if (adapter->cal_data) {
662 release_firmware(adapter->cal_data);
663 adapter->cal_data = NULL;
664 }
665 if (adapter->firmware) {
666 release_firmware(adapter->firmware);
667 adapter->firmware = NULL;
668 }
669 if (init_failed) {
670 if (adapter->irq_wakeup >= 0)
671 device_init_wakeup(adapter->dev, false);
672 mwifiex_free_adapter(adapter);
673 }
674 /* Tell all current and future waiters we're finished */
675 complete_all(fw_done);
676
677 return init_failed ? -EIO : 0;
678 }
679
680 static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
681 {
682 _mwifiex_fw_dpc(firmware, context);
683 }
684
685 /*
686 * This function gets the firmware and (if called asynchronously) kicks off the
687 * HW init when done.
688 */
689 static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter,
690 bool req_fw_nowait)
691 {
692 int ret;
693
694 /* Override default firmware with manufacturing one if
695 * manufacturing mode is enabled
696 */
697 if (mfg_mode) {
698 if (strlcpy(adapter->fw_name, MFG_FIRMWARE,
699 sizeof(adapter->fw_name)) >=
700 sizeof(adapter->fw_name)) {
701 pr_err("%s: fw_name too long!\n", __func__);
702 return -1;
703 }
704 }
705
706 if (req_fw_nowait) {
707 ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name,
708 adapter->dev, GFP_KERNEL, adapter,
709 mwifiex_fw_dpc);
710 } else {
711 ret = request_firmware(&adapter->firmware,
712 adapter->fw_name,
713 adapter->dev);
714 }
715
716 if (ret < 0)
717 mwifiex_dbg(adapter, ERROR, "request_firmware%s error %d\n",
718 req_fw_nowait ? "_nowait" : "", ret);
719 return ret;
720 }
721
722 /*
723 * CFG802.11 network device handler for open.
724 *
725 * Starts the data queue.
726 */
727 static int
728 mwifiex_open(struct net_device *dev)
729 {
730 netif_carrier_off(dev);
731
732 return 0;
733 }
734
735 /*
736 * CFG802.11 network device handler for close.
737 */
738 static int
739 mwifiex_close(struct net_device *dev)
740 {
741 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
742
743 if (priv->scan_request) {
744 struct cfg80211_scan_info info = {
745 .aborted = true,
746 };
747
748 mwifiex_dbg(priv->adapter, INFO,
749 "aborting scan on ndo_stop\n");
750 cfg80211_scan_done(priv->scan_request, &info);
751 priv->scan_request = NULL;
752 priv->scan_aborting = true;
753 }
754
755 if (priv->sched_scanning) {
756 mwifiex_dbg(priv->adapter, INFO,
757 "aborting bgscan on ndo_stop\n");
758 mwifiex_stop_bg_scan(priv);
759 cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
760 }
761
762 return 0;
763 }
764
765 static bool
766 mwifiex_bypass_tx_queue(struct mwifiex_private *priv,
767 struct sk_buff *skb)
768 {
769 struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
770
771 if (ntohs(eth_hdr->h_proto) == ETH_P_PAE ||
772 mwifiex_is_skb_mgmt_frame(skb) ||
773 (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
774 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
775 (ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) {
776 mwifiex_dbg(priv->adapter, DATA,
777 "bypass txqueue; eth type %#x, mgmt %d\n",
778 ntohs(eth_hdr->h_proto),
779 mwifiex_is_skb_mgmt_frame(skb));
780 return true;
781 }
782
783 return false;
784 }
785 /*
786 * Add buffer into wmm tx queue and queue work to transmit it.
787 */
788 int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)
789 {
790 struct netdev_queue *txq;
791 int index = mwifiex_1d_to_wmm_queue[skb->priority];
792
793 if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) {
794 txq = netdev_get_tx_queue(priv->netdev, index);
795 if (!netif_tx_queue_stopped(txq)) {
796 netif_tx_stop_queue(txq);
797 mwifiex_dbg(priv->adapter, DATA,
798 "stop queue: %d\n", index);
799 }
800 }
801
802 if (mwifiex_bypass_tx_queue(priv, skb)) {
803 atomic_inc(&priv->adapter->tx_pending);
804 atomic_inc(&priv->adapter->bypass_tx_pending);
805 mwifiex_wmm_add_buf_bypass_txqueue(priv, skb);
806 } else {
807 atomic_inc(&priv->adapter->tx_pending);
808 mwifiex_wmm_add_buf_txqueue(priv, skb);
809 }
810
811 mwifiex_queue_main_work(priv->adapter);
812
813 return 0;
814 }
815
816 struct sk_buff *
817 mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv,
818 struct sk_buff *skb, u8 flag, u64 *cookie)
819 {
820 struct sk_buff *orig_skb = skb;
821 struct mwifiex_txinfo *tx_info, *orig_tx_info;
822
823 skb = skb_clone(skb, GFP_ATOMIC);
824 if (skb) {
825 unsigned long flags;
826 int id;
827
828 spin_lock_irqsave(&priv->ack_status_lock, flags);
829 id = idr_alloc(&priv->ack_status_frames, orig_skb,
830 1, 0x10, GFP_ATOMIC);
831 spin_unlock_irqrestore(&priv->ack_status_lock, flags);
832
833 if (id >= 0) {
834 tx_info = MWIFIEX_SKB_TXCB(skb);
835 tx_info->ack_frame_id = id;
836 tx_info->flags |= flag;
837 orig_tx_info = MWIFIEX_SKB_TXCB(orig_skb);
838 orig_tx_info->ack_frame_id = id;
839 orig_tx_info->flags |= flag;
840
841 if (flag == MWIFIEX_BUF_FLAG_ACTION_TX_STATUS && cookie)
842 orig_tx_info->cookie = *cookie;
843
844 } else if (skb_shared(skb)) {
845 kfree_skb(orig_skb);
846 } else {
847 kfree_skb(skb);
848 skb = orig_skb;
849 }
850 } else {
851 /* couldn't clone -- lose tx status ... */
852 skb = orig_skb;
853 }
854
855 return skb;
856 }
857
858 /*
859 * CFG802.11 network device handler for data transmission.
860 */
861 static int
862 mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
863 {
864 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
865 struct sk_buff *new_skb;
866 struct mwifiex_txinfo *tx_info;
867 bool multicast;
868
869 mwifiex_dbg(priv->adapter, DATA,
870 "data: %lu BSS(%d-%d): Data <= kernel\n",
871 jiffies, priv->bss_type, priv->bss_num);
872
873 if (priv->adapter->surprise_removed) {
874 kfree_skb(skb);
875 priv->stats.tx_dropped++;
876 return 0;
877 }
878 if (!skb->len || (skb->len > ETH_FRAME_LEN)) {
879 mwifiex_dbg(priv->adapter, ERROR,
880 "Tx: bad skb len %d\n", skb->len);
881 kfree_skb(skb);
882 priv->stats.tx_dropped++;
883 return 0;
884 }
885 if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) {
886 mwifiex_dbg(priv->adapter, DATA,
887 "data: Tx: insufficient skb headroom %d\n",
888 skb_headroom(skb));
889 /* Insufficient skb headroom - allocate a new skb */
890 new_skb =
891 skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
892 if (unlikely(!new_skb)) {
893 mwifiex_dbg(priv->adapter, ERROR,
894 "Tx: cannot alloca new_skb\n");
895 kfree_skb(skb);
896 priv->stats.tx_dropped++;
897 return 0;
898 }
899 kfree_skb(skb);
900 skb = new_skb;
901 mwifiex_dbg(priv->adapter, INFO,
902 "info: new skb headroomd %d\n",
903 skb_headroom(skb));
904 }
905
906 tx_info = MWIFIEX_SKB_TXCB(skb);
907 memset(tx_info, 0, sizeof(*tx_info));
908 tx_info->bss_num = priv->bss_num;
909 tx_info->bss_type = priv->bss_type;
910 tx_info->pkt_len = skb->len;
911
912 multicast = is_multicast_ether_addr(skb->data);
913
914 if (unlikely(!multicast && skb->sk &&
915 skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS &&
916 priv->adapter->fw_api_ver == MWIFIEX_FW_V15))
917 skb = mwifiex_clone_skb_for_tx_status(priv,
918 skb,
919 MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS, NULL);
920
921 /* Record the current time the packet was queued; used to
922 * determine the amount of time the packet was queued in
923 * the driver before it was sent to the firmware.
924 * The delay is then sent along with the packet to the
925 * firmware for aggregate delay calculation for stats and
926 * MSDU lifetime expiry.
927 */
928 __net_timestamp(skb);
929
930 if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
931 priv->bss_type == MWIFIEX_BSS_TYPE_STA &&
932 !ether_addr_equal_unaligned(priv->cfg_bssid, skb->data)) {
933 if (priv->adapter->auto_tdls && priv->check_tdls_tx)
934 mwifiex_tdls_check_tx(priv, skb);
935 }
936
937 mwifiex_queue_tx_pkt(priv, skb);
938
939 return 0;
940 }
941
942 int mwifiex_set_mac_address(struct mwifiex_private *priv,
943 struct net_device *dev)
944 {
945 int ret;
946 u64 mac_addr;
947
948 if (priv->bss_type != MWIFIEX_BSS_TYPE_P2P)
949 goto done;
950
951 mac_addr = ether_addr_to_u64(priv->curr_addr);
952 mac_addr |= BIT_ULL(MWIFIEX_MAC_LOCAL_ADMIN_BIT);
953 u64_to_ether_addr(mac_addr, priv->curr_addr);
954
955 /* Send request to firmware */
956 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
957 HostCmd_ACT_GEN_SET, 0, NULL, true);
958
959 if (ret) {
960 mwifiex_dbg(priv->adapter, ERROR,
961 "set mac address failed: ret=%d\n", ret);
962 return ret;
963 }
964
965 done:
966 memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN);
967 return 0;
968 }
969
970 /* CFG802.11 network device handler for setting MAC address.
971 */
972 static int
973 mwifiex_ndo_set_mac_address(struct net_device *dev, void *addr)
974 {
975 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
976 struct sockaddr *hw_addr = addr;
977
978 memcpy(priv->curr_addr, hw_addr->sa_data, ETH_ALEN);
979 return mwifiex_set_mac_address(priv, dev);
980 }
981
982 /*
983 * CFG802.11 network device handler for setting multicast list.
984 */
985 static void mwifiex_set_multicast_list(struct net_device *dev)
986 {
987 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
988 struct mwifiex_multicast_list mcast_list;
989
990 if (dev->flags & IFF_PROMISC) {
991 mcast_list.mode = MWIFIEX_PROMISC_MODE;
992 } else if (dev->flags & IFF_ALLMULTI ||
993 netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) {
994 mcast_list.mode = MWIFIEX_ALL_MULTI_MODE;
995 } else {
996 mcast_list.mode = MWIFIEX_MULTICAST_MODE;
997 mcast_list.num_multicast_addr =
998 mwifiex_copy_mcast_addr(&mcast_list, dev);
999 }
1000 mwifiex_request_set_multicast_list(priv, &mcast_list);
1001 }
1002
1003 /*
1004 * CFG802.11 network device handler for transmission timeout.
1005 */
1006 static void
1007 mwifiex_tx_timeout(struct net_device *dev)
1008 {
1009 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1010
1011 priv->num_tx_timeout++;
1012 priv->tx_timeout_cnt++;
1013 mwifiex_dbg(priv->adapter, ERROR,
1014 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
1015 jiffies, priv->tx_timeout_cnt, priv->bss_type,
1016 priv->bss_num);
1017 mwifiex_set_trans_start(dev);
1018
1019 if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&
1020 priv->adapter->if_ops.card_reset) {
1021 mwifiex_dbg(priv->adapter, ERROR,
1022 "tx_timeout_cnt exceeds threshold.\t"
1023 "Triggering card reset!\n");
1024 priv->adapter->if_ops.card_reset(priv->adapter);
1025 }
1026 }
1027
1028 void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter)
1029 {
1030 struct usb_card_rec *card = adapter->card;
1031 struct mwifiex_private *priv;
1032 u16 tx_buf_size;
1033 int i, ret;
1034
1035 card->mc_resync_flag = true;
1036 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
1037 if (atomic_read(&card->port[i].tx_data_urb_pending)) {
1038 mwifiex_dbg(adapter, WARN, "pending data urb in sys\n");
1039 return;
1040 }
1041 }
1042
1043 card->mc_resync_flag = false;
1044 tx_buf_size = 0xffff;
1045 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1046 ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF,
1047 HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false);
1048 if (ret)
1049 mwifiex_dbg(adapter, ERROR,
1050 "send reconfig tx buf size cmd err\n");
1051 }
1052 EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync);
1053
1054 void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter)
1055 {
1056 /* Dump all the memory data into single file, a userspace script will
1057 * be used to split all the memory data to multiple files
1058 */
1059 mwifiex_dbg(adapter, MSG,
1060 "== mwifiex dump information to /sys/class/devcoredump start\n");
1061 dev_coredumpv(adapter->dev, adapter->devdump_data, adapter->devdump_len,
1062 GFP_KERNEL);
1063 mwifiex_dbg(adapter, MSG,
1064 "== mwifiex dump information to /sys/class/devcoredump end\n");
1065
1066 /* Device dump data will be freed in device coredump release function
1067 * after 5 min. Here reset adapter->devdump_data and ->devdump_len
1068 * to avoid it been accidentally reused.
1069 */
1070 adapter->devdump_data = NULL;
1071 adapter->devdump_len = 0;
1072 }
1073 EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump);
1074
1075 void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter)
1076 {
1077 char *p;
1078 char drv_version[64];
1079 struct usb_card_rec *cardp;
1080 struct sdio_mmc_card *sdio_card;
1081 struct mwifiex_private *priv;
1082 int i, idx;
1083 struct netdev_queue *txq;
1084 struct mwifiex_debug_info *debug_info;
1085
1086 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n");
1087
1088 p = adapter->devdump_data;
1089 strcpy(p, "========Start dump driverinfo========\n");
1090 p += strlen("========Start dump driverinfo========\n");
1091 p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
1092
1093 mwifiex_drv_get_driver_version(adapter, drv_version,
1094 sizeof(drv_version) - 1);
1095 p += sprintf(p, "driver_version = %s\n", drv_version);
1096
1097 if (adapter->iface_type == MWIFIEX_USB) {
1098 cardp = (struct usb_card_rec *)adapter->card;
1099 p += sprintf(p, "tx_cmd_urb_pending = %d\n",
1100 atomic_read(&cardp->tx_cmd_urb_pending));
1101 p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n",
1102 atomic_read(&cardp->port[0].tx_data_urb_pending));
1103 p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n",
1104 atomic_read(&cardp->port[1].tx_data_urb_pending));
1105 p += sprintf(p, "rx_cmd_urb_pending = %d\n",
1106 atomic_read(&cardp->rx_cmd_urb_pending));
1107 p += sprintf(p, "rx_data_urb_pending = %d\n",
1108 atomic_read(&cardp->rx_data_urb_pending));
1109 }
1110
1111 p += sprintf(p, "tx_pending = %d\n",
1112 atomic_read(&adapter->tx_pending));
1113 p += sprintf(p, "rx_pending = %d\n",
1114 atomic_read(&adapter->rx_pending));
1115
1116 if (adapter->iface_type == MWIFIEX_SDIO) {
1117 sdio_card = (struct sdio_mmc_card *)adapter->card;
1118 p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
1119 sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port);
1120 p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
1121 sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port);
1122 }
1123
1124 for (i = 0; i < adapter->priv_num; i++) {
1125 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1126 continue;
1127 priv = adapter->priv[i];
1128 p += sprintf(p, "\n[interface : \"%s\"]\n",
1129 priv->netdev->name);
1130 p += sprintf(p, "wmm_tx_pending[0] = %d\n",
1131 atomic_read(&priv->wmm_tx_pending[0]));
1132 p += sprintf(p, "wmm_tx_pending[1] = %d\n",
1133 atomic_read(&priv->wmm_tx_pending[1]));
1134 p += sprintf(p, "wmm_tx_pending[2] = %d\n",
1135 atomic_read(&priv->wmm_tx_pending[2]));
1136 p += sprintf(p, "wmm_tx_pending[3] = %d\n",
1137 atomic_read(&priv->wmm_tx_pending[3]));
1138 p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ?
1139 "Disconnected" : "Connected");
1140 p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev)
1141 ? "on" : "off"));
1142 for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) {
1143 txq = netdev_get_tx_queue(priv->netdev, idx);
1144 p += sprintf(p, "tx queue %d:%s ", idx,
1145 netif_tx_queue_stopped(txq) ?
1146 "stopped" : "started");
1147 }
1148 p += sprintf(p, "\n%s: num_tx_timeout = %d\n",
1149 priv->netdev->name, priv->num_tx_timeout);
1150 }
1151
1152 if (adapter->iface_type == MWIFIEX_SDIO ||
1153 adapter->iface_type == MWIFIEX_PCIE) {
1154 p += sprintf(p, "\n=== %s register dump===\n",
1155 adapter->iface_type == MWIFIEX_SDIO ?
1156 "SDIO" : "PCIE");
1157 if (adapter->if_ops.reg_dump)
1158 p += adapter->if_ops.reg_dump(adapter, p);
1159 }
1160 p += sprintf(p, "\n=== more debug information\n");
1161 debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);
1162 if (debug_info) {
1163 for (i = 0; i < adapter->priv_num; i++) {
1164 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1165 continue;
1166 priv = adapter->priv[i];
1167 mwifiex_get_debug_info(priv, debug_info);
1168 p += mwifiex_debug_info_to_buffer(priv, p, debug_info);
1169 break;
1170 }
1171 kfree(debug_info);
1172 }
1173
1174 strcpy(p, "\n========End dump========\n");
1175 p += strlen("\n========End dump========\n");
1176 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n");
1177 adapter->devdump_len = p - (char *)adapter->devdump_data;
1178 }
1179 EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump);
1180
1181 void mwifiex_prepare_fw_dump_info(struct mwifiex_adapter *adapter)
1182 {
1183 u8 idx;
1184 char *fw_dump_ptr;
1185 u32 dump_len = 0;
1186
1187 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1188 struct memory_type_mapping *entry =
1189 &adapter->mem_type_mapping_tbl[idx];
1190
1191 if (entry->mem_ptr) {
1192 dump_len += (strlen("========Start dump ") +
1193 strlen(entry->mem_name) +
1194 strlen("========\n") +
1195 (entry->mem_size + 1) +
1196 strlen("\n========End dump========\n"));
1197 }
1198 }
1199
1200 if (dump_len + 1 + adapter->devdump_len > MWIFIEX_FW_DUMP_SIZE) {
1201 /* Realloc in case buffer overflow */
1202 fw_dump_ptr = vzalloc(dump_len + 1 + adapter->devdump_len);
1203 mwifiex_dbg(adapter, MSG, "Realloc device dump data.\n");
1204 if (!fw_dump_ptr) {
1205 vfree(adapter->devdump_data);
1206 mwifiex_dbg(adapter, ERROR,
1207 "vzalloc devdump data failure!\n");
1208 return;
1209 }
1210
1211 memmove(fw_dump_ptr, adapter->devdump_data,
1212 adapter->devdump_len);
1213 vfree(adapter->devdump_data);
1214 adapter->devdump_data = fw_dump_ptr;
1215 }
1216
1217 fw_dump_ptr = (char *)adapter->devdump_data + adapter->devdump_len;
1218
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 if (entry->mem_ptr) {
1224 strcpy(fw_dump_ptr, "========Start dump ");
1225 fw_dump_ptr += strlen("========Start dump ");
1226
1227 strcpy(fw_dump_ptr, entry->mem_name);
1228 fw_dump_ptr += strlen(entry->mem_name);
1229
1230 strcpy(fw_dump_ptr, "========\n");
1231 fw_dump_ptr += strlen("========\n");
1232
1233 memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1234 fw_dump_ptr += entry->mem_size;
1235
1236 strcpy(fw_dump_ptr, "\n========End dump========\n");
1237 fw_dump_ptr += strlen("\n========End dump========\n");
1238 }
1239 }
1240
1241 adapter->devdump_len = fw_dump_ptr - (char *)adapter->devdump_data;
1242
1243 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1244 struct memory_type_mapping *entry =
1245 &adapter->mem_type_mapping_tbl[idx];
1246
1247 vfree(entry->mem_ptr);
1248 entry->mem_ptr = NULL;
1249 entry->mem_size = 0;
1250 }
1251 }
1252 EXPORT_SYMBOL_GPL(mwifiex_prepare_fw_dump_info);
1253
1254 /*
1255 * CFG802.11 network device handler for statistics retrieval.
1256 */
1257 static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
1258 {
1259 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1260
1261 return &priv->stats;
1262 }
1263
1264 static u16
1265 mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb,
1266 void *accel_priv, select_queue_fallback_t fallback)
1267 {
1268 skb->priority = cfg80211_classify8021d(skb, NULL);
1269 return mwifiex_1d_to_wmm_queue[skb->priority];
1270 }
1271
1272 /* Network device handlers */
1273 static const struct net_device_ops mwifiex_netdev_ops = {
1274 .ndo_open = mwifiex_open,
1275 .ndo_stop = mwifiex_close,
1276 .ndo_start_xmit = mwifiex_hard_start_xmit,
1277 .ndo_set_mac_address = mwifiex_ndo_set_mac_address,
1278 .ndo_validate_addr = eth_validate_addr,
1279 .ndo_tx_timeout = mwifiex_tx_timeout,
1280 .ndo_get_stats = mwifiex_get_stats,
1281 .ndo_set_rx_mode = mwifiex_set_multicast_list,
1282 .ndo_select_queue = mwifiex_netdev_select_wmm_queue,
1283 };
1284
1285 /*
1286 * This function initializes the private structure parameters.
1287 *
1288 * The following wait queues are initialized -
1289 * - IOCTL wait queue
1290 * - Command wait queue
1291 * - Statistics wait queue
1292 *
1293 * ...and the following default parameters are set -
1294 * - Current key index : Set to 0
1295 * - Rate index : Set to auto
1296 * - Media connected : Set to disconnected
1297 * - Adhoc link sensed : Set to false
1298 * - Nick name : Set to null
1299 * - Number of Tx timeout : Set to 0
1300 * - Device address : Set to current address
1301 * - Rx histogram statistc : Set to 0
1302 *
1303 * In addition, the CFG80211 work queue is also created.
1304 */
1305 void mwifiex_init_priv_params(struct mwifiex_private *priv,
1306 struct net_device *dev)
1307 {
1308 dev->netdev_ops = &mwifiex_netdev_ops;
1309 dev->needs_free_netdev = true;
1310 /* Initialize private structure */
1311 priv->current_key_index = 0;
1312 priv->media_connected = false;
1313 memset(priv->mgmt_ie, 0,
1314 sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX);
1315 priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK;
1316 priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK;
1317 priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK;
1318 priv->gen_idx = MWIFIEX_AUTO_IDX_MASK;
1319 priv->num_tx_timeout = 0;
1320 ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr);
1321
1322 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
1323 GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
1324 priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL);
1325 if (priv->hist_data)
1326 mwifiex_hist_data_reset(priv);
1327 }
1328 }
1329
1330 /*
1331 * This function check if command is pending.
1332 */
1333 int is_command_pending(struct mwifiex_adapter *adapter)
1334 {
1335 unsigned long flags;
1336 int is_cmd_pend_q_empty;
1337
1338 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
1339 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
1340 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
1341
1342 return !is_cmd_pend_q_empty;
1343 }
1344
1345 /*
1346 * This is the RX work queue function.
1347 *
1348 * It handles the RX operations.
1349 */
1350 static void mwifiex_rx_work_queue(struct work_struct *work)
1351 {
1352 struct mwifiex_adapter *adapter =
1353 container_of(work, struct mwifiex_adapter, rx_work);
1354
1355 if (adapter->surprise_removed)
1356 return;
1357 mwifiex_process_rx(adapter);
1358 }
1359
1360 /*
1361 * This is the main work queue function.
1362 *
1363 * It handles the main process, which in turn handles the complete
1364 * driver operations.
1365 */
1366 static void mwifiex_main_work_queue(struct work_struct *work)
1367 {
1368 struct mwifiex_adapter *adapter =
1369 container_of(work, struct mwifiex_adapter, main_work);
1370
1371 if (adapter->surprise_removed)
1372 return;
1373 mwifiex_main_process(adapter);
1374 }
1375
1376 /* Common teardown code used for both device removal and reset */
1377 static void mwifiex_uninit_sw(struct mwifiex_adapter *adapter)
1378 {
1379 struct mwifiex_private *priv;
1380 int i;
1381
1382 /* We can no longer handle interrupts once we start doing the teardown
1383 * below.
1384 */
1385 if (adapter->if_ops.disable_int)
1386 adapter->if_ops.disable_int(adapter);
1387
1388 adapter->surprise_removed = true;
1389 mwifiex_terminate_workqueue(adapter);
1390 adapter->int_status = 0;
1391
1392 /* Stop data */
1393 for (i = 0; i < adapter->priv_num; i++) {
1394 priv = adapter->priv[i];
1395 if (priv && priv->netdev) {
1396 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
1397 if (netif_carrier_ok(priv->netdev))
1398 netif_carrier_off(priv->netdev);
1399 netif_device_detach(priv->netdev);
1400 }
1401 }
1402
1403 mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n");
1404 mwifiex_shutdown_drv(adapter);
1405 mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n");
1406
1407 if (atomic_read(&adapter->rx_pending) ||
1408 atomic_read(&adapter->tx_pending) ||
1409 atomic_read(&adapter->cmd_pending)) {
1410 mwifiex_dbg(adapter, ERROR,
1411 "rx_pending=%d, tx_pending=%d,\t"
1412 "cmd_pending=%d\n",
1413 atomic_read(&adapter->rx_pending),
1414 atomic_read(&adapter->tx_pending),
1415 atomic_read(&adapter->cmd_pending));
1416 }
1417
1418 for (i = 0; i < adapter->priv_num; i++) {
1419 priv = adapter->priv[i];
1420 if (!priv)
1421 continue;
1422 rtnl_lock();
1423 if (priv->netdev &&
1424 priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED)
1425 mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
1426 rtnl_unlock();
1427 }
1428
1429 wiphy_unregister(adapter->wiphy);
1430 wiphy_free(adapter->wiphy);
1431 adapter->wiphy = NULL;
1432
1433 vfree(adapter->chan_stats);
1434 mwifiex_free_cmd_buffers(adapter);
1435 }
1436
1437 /*
1438 * This function gets called during PCIe function level reset.
1439 */
1440 int mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
1441 {
1442 struct mwifiex_private *priv;
1443
1444 if (!adapter)
1445 return 0;
1446
1447 wait_for_completion(adapter->fw_done);
1448 /* Caller should ensure we aren't suspending while this happens */
1449 reinit_completion(adapter->fw_done);
1450
1451 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1452 mwifiex_deauthenticate(priv, NULL);
1453
1454 mwifiex_uninit_sw(adapter);
1455
1456 if (adapter->if_ops.down_dev)
1457 adapter->if_ops.down_dev(adapter);
1458
1459 return 0;
1460 }
1461 EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw);
1462
1463 /* This function gets called during PCIe function level reset. Required
1464 * code is extracted from mwifiex_add_card()
1465 */
1466 int
1467 mwifiex_reinit_sw(struct mwifiex_adapter *adapter)
1468 {
1469 int ret;
1470
1471 mwifiex_init_lock_list(adapter);
1472 if (adapter->if_ops.up_dev)
1473 adapter->if_ops.up_dev(adapter);
1474
1475 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1476 adapter->surprise_removed = false;
1477 init_waitqueue_head(&adapter->init_wait_q);
1478 adapter->is_suspended = false;
1479 adapter->hs_activated = false;
1480 adapter->is_cmd_timedout = 0;
1481 init_waitqueue_head(&adapter->hs_activate_wait_q);
1482 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1483 adapter->cmd_wait_q.status = 0;
1484 adapter->scan_wait_q_woken = false;
1485
1486 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1487 adapter->rx_work_enabled = true;
1488
1489 adapter->workqueue =
1490 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1491 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1492 if (!adapter->workqueue)
1493 goto err_kmalloc;
1494
1495 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1496
1497 if (adapter->rx_work_enabled) {
1498 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1499 WQ_HIGHPRI |
1500 WQ_MEM_RECLAIM |
1501 WQ_UNBOUND, 1);
1502 if (!adapter->rx_workqueue)
1503 goto err_kmalloc;
1504 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1505 }
1506
1507 /* Register the device. Fill up the private data structure with
1508 * relevant information from the card. Some code extracted from
1509 * mwifiex_register_dev()
1510 */
1511 mwifiex_dbg(adapter, INFO, "%s, mwifiex_init_hw_fw()...\n", __func__);
1512
1513 if (mwifiex_init_hw_fw(adapter, false)) {
1514 mwifiex_dbg(adapter, ERROR,
1515 "%s: firmware init failed\n", __func__);
1516 goto err_init_fw;
1517 }
1518
1519 /* _mwifiex_fw_dpc() does its own cleanup */
1520 ret = _mwifiex_fw_dpc(adapter->firmware, adapter);
1521 if (ret) {
1522 pr_err("Failed to bring up adapter: %d\n", ret);
1523 return ret;
1524 }
1525 mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
1526
1527 return 0;
1528
1529 err_init_fw:
1530 mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__);
1531 if (adapter->if_ops.unregister_dev)
1532 adapter->if_ops.unregister_dev(adapter);
1533
1534 err_kmalloc:
1535 adapter->surprise_removed = true;
1536 mwifiex_terminate_workqueue(adapter);
1537 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1538 mwifiex_dbg(adapter, ERROR,
1539 "info: %s: shutdown mwifiex\n", __func__);
1540 mwifiex_shutdown_drv(adapter);
1541 mwifiex_free_cmd_buffers(adapter);
1542 }
1543
1544 complete_all(adapter->fw_done);
1545 mwifiex_dbg(adapter, INFO, "%s, error\n", __func__);
1546
1547 return -1;
1548 }
1549 EXPORT_SYMBOL_GPL(mwifiex_reinit_sw);
1550
1551 static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv)
1552 {
1553 struct mwifiex_adapter *adapter = priv;
1554
1555 dev_dbg(adapter->dev, "%s: wake by wifi", __func__);
1556 adapter->wake_by_wifi = true;
1557 disable_irq_nosync(irq);
1558
1559 /* Notify PM core we are wakeup source */
1560 pm_wakeup_event(adapter->dev, 0);
1561 pm_system_wakeup();
1562
1563 return IRQ_HANDLED;
1564 }
1565
1566 static void mwifiex_probe_of(struct mwifiex_adapter *adapter)
1567 {
1568 int ret;
1569 struct device *dev = adapter->dev;
1570
1571 if (!dev->of_node)
1572 goto err_exit;
1573
1574 adapter->dt_node = dev->of_node;
1575 adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0);
1576 if (!adapter->irq_wakeup) {
1577 dev_dbg(dev, "fail to parse irq_wakeup from device tree\n");
1578 goto err_exit;
1579 }
1580
1581 ret = devm_request_irq(dev, adapter->irq_wakeup,
1582 mwifiex_irq_wakeup_handler, IRQF_TRIGGER_LOW,
1583 "wifi_wake", adapter);
1584 if (ret) {
1585 dev_err(dev, "Failed to request irq_wakeup %d (%d)\n",
1586 adapter->irq_wakeup, ret);
1587 goto err_exit;
1588 }
1589
1590 disable_irq(adapter->irq_wakeup);
1591 if (device_init_wakeup(dev, true)) {
1592 dev_err(dev, "fail to init wakeup for mwifiex\n");
1593 goto err_exit;
1594 }
1595 return;
1596
1597 err_exit:
1598 adapter->irq_wakeup = -1;
1599 }
1600
1601 /*
1602 * This function adds the card.
1603 *
1604 * This function follows the following major steps to set up the device -
1605 * - Initialize software. This includes probing the card, registering
1606 * the interface operations table, and allocating/initializing the
1607 * adapter structure
1608 * - Set up the netlink socket
1609 * - Create and start the main work queue
1610 * - Register the device
1611 * - Initialize firmware and hardware
1612 * - Add logical interfaces
1613 */
1614 int
1615 mwifiex_add_card(void *card, struct completion *fw_done,
1616 struct mwifiex_if_ops *if_ops, u8 iface_type,
1617 struct device *dev)
1618 {
1619 struct mwifiex_adapter *adapter;
1620
1621 if (mwifiex_register(card, dev, if_ops, (void **)&adapter)) {
1622 pr_err("%s: software init failed\n", __func__);
1623 goto err_init_sw;
1624 }
1625
1626 mwifiex_probe_of(adapter);
1627
1628 adapter->iface_type = iface_type;
1629 adapter->fw_done = fw_done;
1630
1631 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1632 adapter->surprise_removed = false;
1633 init_waitqueue_head(&adapter->init_wait_q);
1634 adapter->is_suspended = false;
1635 adapter->hs_activated = false;
1636 init_waitqueue_head(&adapter->hs_activate_wait_q);
1637 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1638 adapter->cmd_wait_q.status = 0;
1639 adapter->scan_wait_q_woken = false;
1640
1641 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1642 adapter->rx_work_enabled = true;
1643
1644 adapter->workqueue =
1645 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1646 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1647 if (!adapter->workqueue)
1648 goto err_kmalloc;
1649
1650 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1651
1652 if (adapter->rx_work_enabled) {
1653 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1654 WQ_HIGHPRI |
1655 WQ_MEM_RECLAIM |
1656 WQ_UNBOUND, 1);
1657 if (!adapter->rx_workqueue)
1658 goto err_kmalloc;
1659
1660 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1661 }
1662
1663 /* Register the device. Fill up the private data structure with relevant
1664 information from the card. */
1665 if (adapter->if_ops.register_dev(adapter)) {
1666 pr_err("%s: failed to register mwifiex device\n", __func__);
1667 goto err_registerdev;
1668 }
1669
1670 if (mwifiex_init_hw_fw(adapter, true)) {
1671 pr_err("%s: firmware init failed\n", __func__);
1672 goto err_init_fw;
1673 }
1674
1675 return 0;
1676
1677 err_init_fw:
1678 pr_debug("info: %s: unregister device\n", __func__);
1679 if (adapter->if_ops.unregister_dev)
1680 adapter->if_ops.unregister_dev(adapter);
1681 err_registerdev:
1682 adapter->surprise_removed = true;
1683 mwifiex_terminate_workqueue(adapter);
1684 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1685 pr_debug("info: %s: shutdown mwifiex\n", __func__);
1686 mwifiex_shutdown_drv(adapter);
1687 mwifiex_free_cmd_buffers(adapter);
1688 }
1689 err_kmalloc:
1690 if (adapter->irq_wakeup >= 0)
1691 device_init_wakeup(adapter->dev, false);
1692 mwifiex_free_adapter(adapter);
1693
1694 err_init_sw:
1695
1696 return -1;
1697 }
1698 EXPORT_SYMBOL_GPL(mwifiex_add_card);
1699
1700 /*
1701 * This function removes the card.
1702 *
1703 * This function follows the following major steps to remove the device -
1704 * - Stop data traffic
1705 * - Shutdown firmware
1706 * - Remove the logical interfaces
1707 * - Terminate the work queue
1708 * - Unregister the device
1709 * - Free the adapter structure
1710 */
1711 int mwifiex_remove_card(struct mwifiex_adapter *adapter)
1712 {
1713 if (!adapter)
1714 return 0;
1715
1716 mwifiex_uninit_sw(adapter);
1717
1718 if (adapter->irq_wakeup >= 0)
1719 device_init_wakeup(adapter->dev, false);
1720
1721 /* Unregister device */
1722 mwifiex_dbg(adapter, INFO,
1723 "info: unregister device\n");
1724 if (adapter->if_ops.unregister_dev)
1725 adapter->if_ops.unregister_dev(adapter);
1726 /* Free adapter structure */
1727 mwifiex_dbg(adapter, INFO,
1728 "info: free adapter\n");
1729 mwifiex_free_adapter(adapter);
1730
1731 return 0;
1732 }
1733 EXPORT_SYMBOL_GPL(mwifiex_remove_card);
1734
1735 void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
1736 const char *fmt, ...)
1737 {
1738 struct va_format vaf;
1739 va_list args;
1740
1741 if (!(adapter->debug_mask & mask))
1742 return;
1743
1744 va_start(args, fmt);
1745
1746 vaf.fmt = fmt;
1747 vaf.va = &args;
1748
1749 if (adapter->dev)
1750 dev_info(adapter->dev, "%pV", &vaf);
1751 else
1752 pr_info("%pV", &vaf);
1753
1754 va_end(args);
1755 }
1756 EXPORT_SYMBOL_GPL(_mwifiex_dbg);
1757
1758 /*
1759 * This function initializes the module.
1760 *
1761 * The debug FS is also initialized if configured.
1762 */
1763 static int
1764 mwifiex_init_module(void)
1765 {
1766 #ifdef CONFIG_DEBUG_FS
1767 mwifiex_debugfs_init();
1768 #endif
1769 return 0;
1770 }
1771
1772 /*
1773 * This function cleans up the module.
1774 *
1775 * The debug FS is removed if available.
1776 */
1777 static void
1778 mwifiex_cleanup_module(void)
1779 {
1780 #ifdef CONFIG_DEBUG_FS
1781 mwifiex_debugfs_remove();
1782 #endif
1783 }
1784
1785 module_init(mwifiex_init_module);
1786 module_exit(mwifiex_cleanup_module);
1787
1788 MODULE_AUTHOR("Marvell International Ltd.");
1789 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION);
1790 MODULE_VERSION(VERSION);
1791 MODULE_LICENSE("GPL v2");
Linux with added FPC-III support