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gpio: rcar: Fix runtime PM imbalance on error
[linux/fpc-iii.git] / drivers / net / wireless / marvell / mwifiex / main.c
blob529099137644a2c4defb3ccd3f9ea6390e03304b
1 /*
2 * NXP Wireless LAN device driver: major functions
3 *
4 * Copyright 2011-2020 NXP
5 *
6 * This software file (the "File") is distributed by NXP
7 * under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13 *
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
18 */
19
20 #include <linux/suspend.h>
21
22 #include "main.h"
23 #include "wmm.h"
24 #include "cfg80211.h"
25 #include "11n.h"
26
27 #define VERSION "1.0"
28 #define MFG_FIRMWARE "mwifiex_mfg.bin"
29
30 static unsigned int debug_mask = MWIFIEX_DEFAULT_DEBUG_MASK;
31 module_param(debug_mask, uint, 0);
32 MODULE_PARM_DESC(debug_mask, "bitmap for debug flags");
33
34 const char driver_version[] = "mwifiex " VERSION " (%s) ";
35 static char *cal_data_cfg;
36 module_param(cal_data_cfg, charp, 0);
37
38 static unsigned short driver_mode;
39 module_param(driver_mode, ushort, 0);
40 MODULE_PARM_DESC(driver_mode,
41 "station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7");
42
43 bool mfg_mode;
44 module_param(mfg_mode, bool, 0);
45 MODULE_PARM_DESC(mfg_mode, "manufacturing mode enable:1, disable:0");
46
47 bool aggr_ctrl;
48 module_param(aggr_ctrl, bool, 0000);
49 MODULE_PARM_DESC(aggr_ctrl, "usb tx aggregation enable:1, disable:0");
50
51 /*
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 spin_lock_bh(&adapter->rx_proc_lock);
177 if (adapter->rx_processing) {
178 spin_unlock_bh(&adapter->rx_proc_lock);
179 } else {
180 spin_unlock_bh(&adapter->rx_proc_lock);
181 queue_work(adapter->rx_workqueue, &adapter->rx_work);
182 }
183 }
184
185 static int mwifiex_process_rx(struct mwifiex_adapter *adapter)
186 {
187 struct sk_buff *skb;
188 struct mwifiex_rxinfo *rx_info;
189
190 spin_lock_bh(&adapter->rx_proc_lock);
191 if (adapter->rx_processing || adapter->rx_locked) {
192 spin_unlock_bh(&adapter->rx_proc_lock);
193 goto exit_rx_proc;
194 } else {
195 adapter->rx_processing = true;
196 spin_unlock_bh(&adapter->rx_proc_lock);
197 }
198
199 /* Check for Rx data */
200 while ((skb = skb_dequeue(&adapter->rx_data_q))) {
201 atomic_dec(&adapter->rx_pending);
202 if ((adapter->delay_main_work ||
203 adapter->iface_type == MWIFIEX_USB) &&
204 (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {
205 if (adapter->if_ops.submit_rem_rx_urbs)
206 adapter->if_ops.submit_rem_rx_urbs(adapter);
207 adapter->delay_main_work = false;
208 mwifiex_queue_main_work(adapter);
209 }
210 rx_info = MWIFIEX_SKB_RXCB(skb);
211 if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) {
212 if (adapter->if_ops.deaggr_pkt)
213 adapter->if_ops.deaggr_pkt(adapter, skb);
214 dev_kfree_skb_any(skb);
215 } else {
216 mwifiex_handle_rx_packet(adapter, skb);
217 }
218 }
219 spin_lock_bh(&adapter->rx_proc_lock);
220 adapter->rx_processing = false;
221 spin_unlock_bh(&adapter->rx_proc_lock);
222
223 exit_rx_proc:
224 return 0;
225 }
226
227 /*
228 * The main process.
229 *
230 * This function is the main procedure of the driver and handles various driver
231 * operations. It runs in a loop and provides the core functionalities.
232 *
233 * The main responsibilities of this function are -
234 * - Ensure concurrency control
235 * - Handle pending interrupts and call interrupt handlers
236 * - Wake up the card if required
237 * - Handle command responses and call response handlers
238 * - Handle events and call event handlers
239 * - Execute pending commands
240 * - Transmit pending data packets
241 */
242 int mwifiex_main_process(struct mwifiex_adapter *adapter)
243 {
244 int ret = 0;
245 unsigned long flags;
246
247 spin_lock_irqsave(&adapter->main_proc_lock, flags);
248
249 /* Check if already processing */
250 if (adapter->mwifiex_processing || adapter->main_locked) {
251 adapter->more_task_flag = true;
252 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
253 return 0;
254 } else {
255 adapter->mwifiex_processing = true;
256 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
257 }
258 process_start:
259 do {
260 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
261 break;
262
263 /* For non-USB interfaces, If we process interrupts first, it
264 * would increase RX pending even further. Avoid this by
265 * checking if rx_pending has crossed high threshold and
266 * schedule rx work queue and then process interrupts.
267 * For USB interface, there are no interrupts. We already have
268 * HIGH_RX_PENDING check in usb.c
269 */
270 if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING &&
271 adapter->iface_type != MWIFIEX_USB) {
272 adapter->delay_main_work = true;
273 mwifiex_queue_rx_work(adapter);
274 break;
275 }
276
277 /* Handle pending interrupt if any */
278 if (adapter->int_status) {
279 if (adapter->hs_activated)
280 mwifiex_process_hs_config(adapter);
281 if (adapter->if_ops.process_int_status)
282 adapter->if_ops.process_int_status(adapter);
283 }
284
285 if (adapter->rx_work_enabled && adapter->data_received)
286 mwifiex_queue_rx_work(adapter);
287
288 /* Need to wake up the card ? */
289 if ((adapter->ps_state == PS_STATE_SLEEP) &&
290 (adapter->pm_wakeup_card_req &&
291 !adapter->pm_wakeup_fw_try) &&
292 (is_command_pending(adapter) ||
293 !skb_queue_empty(&adapter->tx_data_q) ||
294 !mwifiex_bypass_txlist_empty(adapter) ||
295 !mwifiex_wmm_lists_empty(adapter))) {
296 adapter->pm_wakeup_fw_try = true;
297 mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3));
298 adapter->if_ops.wakeup(adapter);
299 continue;
300 }
301
302 if (IS_CARD_RX_RCVD(adapter)) {
303 adapter->data_received = false;
304 adapter->pm_wakeup_fw_try = false;
305 del_timer(&adapter->wakeup_timer);
306 if (adapter->ps_state == PS_STATE_SLEEP)
307 adapter->ps_state = PS_STATE_AWAKE;
308 } else {
309 /* We have tried to wakeup the card already */
310 if (adapter->pm_wakeup_fw_try)
311 break;
312 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
313 mwifiex_check_ps_cond(adapter);
314
315 if (adapter->ps_state != PS_STATE_AWAKE)
316 break;
317 if (adapter->tx_lock_flag) {
318 if (adapter->iface_type == MWIFIEX_USB) {
319 if (!adapter->usb_mc_setup)
320 break;
321 } else
322 break;
323 }
324
325 if ((!adapter->scan_chan_gap_enabled &&
326 adapter->scan_processing) || adapter->data_sent ||
327 mwifiex_is_tdls_chan_switching
328 (mwifiex_get_priv(adapter,
329 MWIFIEX_BSS_ROLE_STA)) ||
330 (mwifiex_wmm_lists_empty(adapter) &&
331 mwifiex_bypass_txlist_empty(adapter) &&
332 skb_queue_empty(&adapter->tx_data_q))) {
333 if (adapter->cmd_sent || adapter->curr_cmd ||
334 !mwifiex_is_send_cmd_allowed
335 (mwifiex_get_priv(adapter,
336 MWIFIEX_BSS_ROLE_STA)) ||
337 (!is_command_pending(adapter)))
338 break;
339 }
340 }
341
342 /* Check for event */
343 if (adapter->event_received) {
344 adapter->event_received = false;
345 mwifiex_process_event(adapter);
346 }
347
348 /* Check for Cmd Resp */
349 if (adapter->cmd_resp_received) {
350 adapter->cmd_resp_received = false;
351 mwifiex_process_cmdresp(adapter);
352
353 /* call mwifiex back when init_fw is done */
354 if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) {
355 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
356 mwifiex_init_fw_complete(adapter);
357 }
358 }
359
360 /* Check if we need to confirm Sleep Request
361 received previously */
362 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
363 mwifiex_check_ps_cond(adapter);
364
365 /* * The ps_state may have been changed during processing of
366 * Sleep Request event.
367 */
368 if ((adapter->ps_state == PS_STATE_SLEEP) ||
369 (adapter->ps_state == PS_STATE_PRE_SLEEP) ||
370 (adapter->ps_state == PS_STATE_SLEEP_CFM)) {
371 continue;
372 }
373
374 if (adapter->tx_lock_flag) {
375 if (adapter->iface_type == MWIFIEX_USB) {
376 if (!adapter->usb_mc_setup)
377 continue;
378 } else
379 continue;
380 }
381
382 if (!adapter->cmd_sent && !adapter->curr_cmd &&
383 mwifiex_is_send_cmd_allowed
384 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
385 if (mwifiex_exec_next_cmd(adapter) == -1) {
386 ret = -1;
387 break;
388 }
389 }
390
391 /** If USB Multi channel setup ongoing,
392 * wait for ready to tx data.
393 */
394 if (adapter->iface_type == MWIFIEX_USB &&
395 adapter->usb_mc_setup)
396 continue;
397
398 if ((adapter->scan_chan_gap_enabled ||
399 !adapter->scan_processing) &&
400 !adapter->data_sent &&
401 !skb_queue_empty(&adapter->tx_data_q)) {
402 mwifiex_process_tx_queue(adapter);
403 if (adapter->hs_activated) {
404 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
405 &adapter->work_flags);
406 mwifiex_hs_activated_event
407 (mwifiex_get_priv
408 (adapter, MWIFIEX_BSS_ROLE_ANY),
409 false);
410 }
411 }
412
413 if ((adapter->scan_chan_gap_enabled ||
414 !adapter->scan_processing) &&
415 !adapter->data_sent &&
416 !mwifiex_bypass_txlist_empty(adapter) &&
417 !mwifiex_is_tdls_chan_switching
418 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
419 mwifiex_process_bypass_tx(adapter);
420 if (adapter->hs_activated) {
421 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
422 &adapter->work_flags);
423 mwifiex_hs_activated_event
424 (mwifiex_get_priv
425 (adapter, MWIFIEX_BSS_ROLE_ANY),
426 false);
427 }
428 }
429
430 if ((adapter->scan_chan_gap_enabled ||
431 !adapter->scan_processing) &&
432 !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) &&
433 !mwifiex_is_tdls_chan_switching
434 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
435 mwifiex_wmm_process_tx(adapter);
436 if (adapter->hs_activated) {
437 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
438 &adapter->work_flags);
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 adapter->is_up = true;
635 goto done;
636
637 err_add_intf:
638 vfree(adapter->chan_stats);
639 err_init_chan_scan:
640 wiphy_unregister(adapter->wiphy);
641 wiphy_free(adapter->wiphy);
642 err_init_fw:
643 if (adapter->if_ops.disable_int)
644 adapter->if_ops.disable_int(adapter);
645 err_dnld_fw:
646 mwifiex_dbg(adapter, ERROR,
647 "info: %s: unregister device\n", __func__);
648 if (adapter->if_ops.unregister_dev)
649 adapter->if_ops.unregister_dev(adapter);
650
651 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
652 mwifiex_terminate_workqueue(adapter);
653
654 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
655 pr_debug("info: %s: shutdown mwifiex\n", __func__);
656 mwifiex_shutdown_drv(adapter);
657 mwifiex_free_cmd_buffers(adapter);
658 }
659
660 init_failed = true;
661 done:
662 if (adapter->cal_data) {
663 release_firmware(adapter->cal_data);
664 adapter->cal_data = NULL;
665 }
666 if (adapter->firmware) {
667 release_firmware(adapter->firmware);
668 adapter->firmware = NULL;
669 }
670 if (init_failed) {
671 if (adapter->irq_wakeup >= 0)
672 device_init_wakeup(adapter->dev, false);
673 mwifiex_free_adapter(adapter);
674 }
675 /* Tell all current and future waiters we're finished */
676 complete_all(fw_done);
677
678 return init_failed ? -EIO : 0;
679 }
680
681 static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
682 {
683 _mwifiex_fw_dpc(firmware, context);
684 }
685
686 /*
687 * This function gets the firmware and (if called asynchronously) kicks off the
688 * HW init when done.
689 */
690 static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter,
691 bool req_fw_nowait)
692 {
693 int ret;
694
695 /* Override default firmware with manufacturing one if
696 * manufacturing mode is enabled
697 */
698 if (mfg_mode) {
699 if (strlcpy(adapter->fw_name, MFG_FIRMWARE,
700 sizeof(adapter->fw_name)) >=
701 sizeof(adapter->fw_name)) {
702 pr_err("%s: fw_name too long!\n", __func__);
703 return -1;
704 }
705 }
706
707 if (req_fw_nowait) {
708 ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name,
709 adapter->dev, GFP_KERNEL, adapter,
710 mwifiex_fw_dpc);
711 } else {
712 ret = request_firmware(&adapter->firmware,
713 adapter->fw_name,
714 adapter->dev);
715 }
716
717 if (ret < 0)
718 mwifiex_dbg(adapter, ERROR, "request_firmware%s error %d\n",
719 req_fw_nowait ? "_nowait" : "", ret);
720 return ret;
721 }
722
723 /*
724 * CFG802.11 network device handler for open.
725 *
726 * Starts the data queue.
727 */
728 static int
729 mwifiex_open(struct net_device *dev)
730 {
731 netif_carrier_off(dev);
732
733 return 0;
734 }
735
736 /*
737 * CFG802.11 network device handler for close.
738 */
739 static int
740 mwifiex_close(struct net_device *dev)
741 {
742 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
743
744 if (priv->scan_request) {
745 struct cfg80211_scan_info info = {
746 .aborted = true,
747 };
748
749 mwifiex_dbg(priv->adapter, INFO,
750 "aborting scan on ndo_stop\n");
751 cfg80211_scan_done(priv->scan_request, &info);
752 priv->scan_request = NULL;
753 priv->scan_aborting = true;
754 }
755
756 if (priv->sched_scanning) {
757 mwifiex_dbg(priv->adapter, INFO,
758 "aborting bgscan on ndo_stop\n");
759 mwifiex_stop_bg_scan(priv);
760 cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
761 }
762
763 return 0;
764 }
765
766 static bool
767 mwifiex_bypass_tx_queue(struct mwifiex_private *priv,
768 struct sk_buff *skb)
769 {
770 struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
771
772 if (ntohs(eth_hdr->h_proto) == ETH_P_PAE ||
773 mwifiex_is_skb_mgmt_frame(skb) ||
774 (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
775 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
776 (ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) {
777 mwifiex_dbg(priv->adapter, DATA,
778 "bypass txqueue; eth type %#x, mgmt %d\n",
779 ntohs(eth_hdr->h_proto),
780 mwifiex_is_skb_mgmt_frame(skb));
781 return true;
782 }
783
784 return false;
785 }
786 /*
787 * Add buffer into wmm tx queue and queue work to transmit it.
788 */
789 int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)
790 {
791 struct netdev_queue *txq;
792 int index = mwifiex_1d_to_wmm_queue[skb->priority];
793
794 if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) {
795 txq = netdev_get_tx_queue(priv->netdev, index);
796 if (!netif_tx_queue_stopped(txq)) {
797 netif_tx_stop_queue(txq);
798 mwifiex_dbg(priv->adapter, DATA,
799 "stop queue: %d\n", index);
800 }
801 }
802
803 if (mwifiex_bypass_tx_queue(priv, skb)) {
804 atomic_inc(&priv->adapter->tx_pending);
805 atomic_inc(&priv->adapter->bypass_tx_pending);
806 mwifiex_wmm_add_buf_bypass_txqueue(priv, skb);
807 } else {
808 atomic_inc(&priv->adapter->tx_pending);
809 mwifiex_wmm_add_buf_txqueue(priv, skb);
810 }
811
812 mwifiex_queue_main_work(priv->adapter);
813
814 return 0;
815 }
816
817 struct sk_buff *
818 mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv,
819 struct sk_buff *skb, u8 flag, u64 *cookie)
820 {
821 struct sk_buff *orig_skb = skb;
822 struct mwifiex_txinfo *tx_info, *orig_tx_info;
823
824 skb = skb_clone(skb, GFP_ATOMIC);
825 if (skb) {
826 int id;
827
828 spin_lock_bh(&priv->ack_status_lock);
829 id = idr_alloc(&priv->ack_status_frames, orig_skb,
830 1, 0x10, GFP_ATOMIC);
831 spin_unlock_bh(&priv->ack_status_lock);
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 netdev_tx_t
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 (test_bit(MWIFIEX_SURPRISE_REMOVED, &priv->adapter->work_flags)) {
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, bool external,
944 u8 *new_mac)
945 {
946 int ret;
947 u64 mac_addr, old_mac_addr;
948
949 old_mac_addr = ether_addr_to_u64(priv->curr_addr);
950
951 if (external) {
952 mac_addr = ether_addr_to_u64(new_mac);
953 } else {
954 /* Internal mac address change */
955 if (priv->bss_type == MWIFIEX_BSS_TYPE_ANY)
956 return -ENOTSUPP;
957
958 mac_addr = old_mac_addr;
959
960 if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) {
961 mac_addr |= BIT_ULL(MWIFIEX_MAC_LOCAL_ADMIN_BIT);
962 mac_addr += priv->bss_num;
963 } else if (priv->adapter->priv[0] != priv) {
964 /* Set mac address based on bss_type/bss_num */
965 mac_addr ^= BIT_ULL(priv->bss_type + 8);
966 mac_addr += priv->bss_num;
967 }
968 }
969
970 u64_to_ether_addr(mac_addr, priv->curr_addr);
971
972 /* Send request to firmware */
973 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
974 HostCmd_ACT_GEN_SET, 0, NULL, true);
975
976 if (ret) {
977 u64_to_ether_addr(old_mac_addr, priv->curr_addr);
978 mwifiex_dbg(priv->adapter, ERROR,
979 "set mac address failed: ret=%d\n", ret);
980 return ret;
981 }
982
983 ether_addr_copy(dev->dev_addr, priv->curr_addr);
984 return 0;
985 }
986
987 /* CFG802.11 network device handler for setting MAC address.
988 */
989 static int
990 mwifiex_ndo_set_mac_address(struct net_device *dev, void *addr)
991 {
992 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
993 struct sockaddr *hw_addr = addr;
994
995 return mwifiex_set_mac_address(priv, dev, true, hw_addr->sa_data);
996 }
997
998 /*
999 * CFG802.11 network device handler for setting multicast list.
1000 */
1001 static void mwifiex_set_multicast_list(struct net_device *dev)
1002 {
1003 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1004 struct mwifiex_multicast_list mcast_list;
1005
1006 if (dev->flags & IFF_PROMISC) {
1007 mcast_list.mode = MWIFIEX_PROMISC_MODE;
1008 } else if (dev->flags & IFF_ALLMULTI ||
1009 netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) {
1010 mcast_list.mode = MWIFIEX_ALL_MULTI_MODE;
1011 } else {
1012 mcast_list.mode = MWIFIEX_MULTICAST_MODE;
1013 mcast_list.num_multicast_addr =
1014 mwifiex_copy_mcast_addr(&mcast_list, dev);
1015 }
1016 mwifiex_request_set_multicast_list(priv, &mcast_list);
1017 }
1018
1019 /*
1020 * CFG802.11 network device handler for transmission timeout.
1021 */
1022 static void
1023 mwifiex_tx_timeout(struct net_device *dev, unsigned int txqueue)
1024 {
1025 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1026
1027 priv->num_tx_timeout++;
1028 priv->tx_timeout_cnt++;
1029 mwifiex_dbg(priv->adapter, ERROR,
1030 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
1031 jiffies, priv->tx_timeout_cnt, priv->bss_type,
1032 priv->bss_num);
1033 mwifiex_set_trans_start(dev);
1034
1035 if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&
1036 priv->adapter->if_ops.card_reset) {
1037 mwifiex_dbg(priv->adapter, ERROR,
1038 "tx_timeout_cnt exceeds threshold.\t"
1039 "Triggering card reset!\n");
1040 priv->adapter->if_ops.card_reset(priv->adapter);
1041 }
1042 }
1043
1044 void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter)
1045 {
1046 struct usb_card_rec *card = adapter->card;
1047 struct mwifiex_private *priv;
1048 u16 tx_buf_size;
1049 int i, ret;
1050
1051 card->mc_resync_flag = true;
1052 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
1053 if (atomic_read(&card->port[i].tx_data_urb_pending)) {
1054 mwifiex_dbg(adapter, WARN, "pending data urb in sys\n");
1055 return;
1056 }
1057 }
1058
1059 card->mc_resync_flag = false;
1060 tx_buf_size = 0xffff;
1061 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1062 ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF,
1063 HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false);
1064 if (ret)
1065 mwifiex_dbg(adapter, ERROR,
1066 "send reconfig tx buf size cmd err\n");
1067 }
1068 EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync);
1069
1070 void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter)
1071 {
1072 /* Dump all the memory data into single file, a userspace script will
1073 * be used to split all the memory data to multiple files
1074 */
1075 mwifiex_dbg(adapter, MSG,
1076 "== mwifiex dump information to /sys/class/devcoredump start\n");
1077 dev_coredumpv(adapter->dev, adapter->devdump_data, adapter->devdump_len,
1078 GFP_KERNEL);
1079 mwifiex_dbg(adapter, MSG,
1080 "== mwifiex dump information to /sys/class/devcoredump end\n");
1081
1082 /* Device dump data will be freed in device coredump release function
1083 * after 5 min. Here reset adapter->devdump_data and ->devdump_len
1084 * to avoid it been accidentally reused.
1085 */
1086 adapter->devdump_data = NULL;
1087 adapter->devdump_len = 0;
1088 }
1089 EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump);
1090
1091 void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter)
1092 {
1093 char *p;
1094 char drv_version[64];
1095 struct usb_card_rec *cardp;
1096 struct sdio_mmc_card *sdio_card;
1097 struct mwifiex_private *priv;
1098 int i, idx;
1099 struct netdev_queue *txq;
1100 struct mwifiex_debug_info *debug_info;
1101
1102 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n");
1103
1104 p = adapter->devdump_data;
1105 strcpy(p, "========Start dump driverinfo========\n");
1106 p += strlen("========Start dump driverinfo========\n");
1107 p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
1108
1109 mwifiex_drv_get_driver_version(adapter, drv_version,
1110 sizeof(drv_version) - 1);
1111 p += sprintf(p, "driver_version = %s\n", drv_version);
1112
1113 if (adapter->iface_type == MWIFIEX_USB) {
1114 cardp = (struct usb_card_rec *)adapter->card;
1115 p += sprintf(p, "tx_cmd_urb_pending = %d\n",
1116 atomic_read(&cardp->tx_cmd_urb_pending));
1117 p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n",
1118 atomic_read(&cardp->port[0].tx_data_urb_pending));
1119 p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n",
1120 atomic_read(&cardp->port[1].tx_data_urb_pending));
1121 p += sprintf(p, "rx_cmd_urb_pending = %d\n",
1122 atomic_read(&cardp->rx_cmd_urb_pending));
1123 p += sprintf(p, "rx_data_urb_pending = %d\n",
1124 atomic_read(&cardp->rx_data_urb_pending));
1125 }
1126
1127 p += sprintf(p, "tx_pending = %d\n",
1128 atomic_read(&adapter->tx_pending));
1129 p += sprintf(p, "rx_pending = %d\n",
1130 atomic_read(&adapter->rx_pending));
1131
1132 if (adapter->iface_type == MWIFIEX_SDIO) {
1133 sdio_card = (struct sdio_mmc_card *)adapter->card;
1134 p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
1135 sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port);
1136 p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
1137 sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port);
1138 }
1139
1140 for (i = 0; i < adapter->priv_num; i++) {
1141 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1142 continue;
1143 priv = adapter->priv[i];
1144 p += sprintf(p, "\n[interface : \"%s\"]\n",
1145 priv->netdev->name);
1146 p += sprintf(p, "wmm_tx_pending[0] = %d\n",
1147 atomic_read(&priv->wmm_tx_pending[0]));
1148 p += sprintf(p, "wmm_tx_pending[1] = %d\n",
1149 atomic_read(&priv->wmm_tx_pending[1]));
1150 p += sprintf(p, "wmm_tx_pending[2] = %d\n",
1151 atomic_read(&priv->wmm_tx_pending[2]));
1152 p += sprintf(p, "wmm_tx_pending[3] = %d\n",
1153 atomic_read(&priv->wmm_tx_pending[3]));
1154 p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ?
1155 "Disconnected" : "Connected");
1156 p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev)
1157 ? "on" : "off"));
1158 for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) {
1159 txq = netdev_get_tx_queue(priv->netdev, idx);
1160 p += sprintf(p, "tx queue %d:%s ", idx,
1161 netif_tx_queue_stopped(txq) ?
1162 "stopped" : "started");
1163 }
1164 p += sprintf(p, "\n%s: num_tx_timeout = %d\n",
1165 priv->netdev->name, priv->num_tx_timeout);
1166 }
1167
1168 if (adapter->iface_type == MWIFIEX_SDIO ||
1169 adapter->iface_type == MWIFIEX_PCIE) {
1170 p += sprintf(p, "\n=== %s register dump===\n",
1171 adapter->iface_type == MWIFIEX_SDIO ?
1172 "SDIO" : "PCIE");
1173 if (adapter->if_ops.reg_dump)
1174 p += adapter->if_ops.reg_dump(adapter, p);
1175 }
1176 p += sprintf(p, "\n=== more debug information\n");
1177 debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);
1178 if (debug_info) {
1179 for (i = 0; i < adapter->priv_num; i++) {
1180 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1181 continue;
1182 priv = adapter->priv[i];
1183 mwifiex_get_debug_info(priv, debug_info);
1184 p += mwifiex_debug_info_to_buffer(priv, p, debug_info);
1185 break;
1186 }
1187 kfree(debug_info);
1188 }
1189
1190 strcpy(p, "\n========End dump========\n");
1191 p += strlen("\n========End dump========\n");
1192 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n");
1193 adapter->devdump_len = p - (char *)adapter->devdump_data;
1194 }
1195 EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump);
1196
1197 void mwifiex_prepare_fw_dump_info(struct mwifiex_adapter *adapter)
1198 {
1199 u8 idx;
1200 char *fw_dump_ptr;
1201 u32 dump_len = 0;
1202
1203 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1204 struct memory_type_mapping *entry =
1205 &adapter->mem_type_mapping_tbl[idx];
1206
1207 if (entry->mem_ptr) {
1208 dump_len += (strlen("========Start dump ") +
1209 strlen(entry->mem_name) +
1210 strlen("========\n") +
1211 (entry->mem_size + 1) +
1212 strlen("\n========End dump========\n"));
1213 }
1214 }
1215
1216 if (dump_len + 1 + adapter->devdump_len > MWIFIEX_FW_DUMP_SIZE) {
1217 /* Realloc in case buffer overflow */
1218 fw_dump_ptr = vzalloc(dump_len + 1 + adapter->devdump_len);
1219 mwifiex_dbg(adapter, MSG, "Realloc device dump data.\n");
1220 if (!fw_dump_ptr) {
1221 vfree(adapter->devdump_data);
1222 mwifiex_dbg(adapter, ERROR,
1223 "vzalloc devdump data failure!\n");
1224 return;
1225 }
1226
1227 memmove(fw_dump_ptr, adapter->devdump_data,
1228 adapter->devdump_len);
1229 vfree(adapter->devdump_data);
1230 adapter->devdump_data = fw_dump_ptr;
1231 }
1232
1233 fw_dump_ptr = (char *)adapter->devdump_data + adapter->devdump_len;
1234
1235 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1236 struct memory_type_mapping *entry =
1237 &adapter->mem_type_mapping_tbl[idx];
1238
1239 if (entry->mem_ptr) {
1240 strcpy(fw_dump_ptr, "========Start dump ");
1241 fw_dump_ptr += strlen("========Start dump ");
1242
1243 strcpy(fw_dump_ptr, entry->mem_name);
1244 fw_dump_ptr += strlen(entry->mem_name);
1245
1246 strcpy(fw_dump_ptr, "========\n");
1247 fw_dump_ptr += strlen("========\n");
1248
1249 memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1250 fw_dump_ptr += entry->mem_size;
1251
1252 strcpy(fw_dump_ptr, "\n========End dump========\n");
1253 fw_dump_ptr += strlen("\n========End dump========\n");
1254 }
1255 }
1256
1257 adapter->devdump_len = fw_dump_ptr - (char *)adapter->devdump_data;
1258
1259 for (idx = 0; idx < adapter->num_mem_types; idx++) {
1260 struct memory_type_mapping *entry =
1261 &adapter->mem_type_mapping_tbl[idx];
1262
1263 vfree(entry->mem_ptr);
1264 entry->mem_ptr = NULL;
1265 entry->mem_size = 0;
1266 }
1267 }
1268 EXPORT_SYMBOL_GPL(mwifiex_prepare_fw_dump_info);
1269
1270 /*
1271 * CFG802.11 network device handler for statistics retrieval.
1272 */
1273 static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
1274 {
1275 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1276
1277 return &priv->stats;
1278 }
1279
1280 static u16
1281 mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb,
1282 struct net_device *sb_dev)
1283 {
1284 skb->priority = cfg80211_classify8021d(skb, NULL);
1285 return mwifiex_1d_to_wmm_queue[skb->priority];
1286 }
1287
1288 /* Network device handlers */
1289 static const struct net_device_ops mwifiex_netdev_ops = {
1290 .ndo_open = mwifiex_open,
1291 .ndo_stop = mwifiex_close,
1292 .ndo_start_xmit = mwifiex_hard_start_xmit,
1293 .ndo_set_mac_address = mwifiex_ndo_set_mac_address,
1294 .ndo_validate_addr = eth_validate_addr,
1295 .ndo_tx_timeout = mwifiex_tx_timeout,
1296 .ndo_get_stats = mwifiex_get_stats,
1297 .ndo_set_rx_mode = mwifiex_set_multicast_list,
1298 .ndo_select_queue = mwifiex_netdev_select_wmm_queue,
1299 };
1300
1301 /*
1302 * This function initializes the private structure parameters.
1303 *
1304 * The following wait queues are initialized -
1305 * - IOCTL wait queue
1306 * - Command wait queue
1307 * - Statistics wait queue
1308 *
1309 * ...and the following default parameters are set -
1310 * - Current key index : Set to 0
1311 * - Rate index : Set to auto
1312 * - Media connected : Set to disconnected
1313 * - Adhoc link sensed : Set to false
1314 * - Nick name : Set to null
1315 * - Number of Tx timeout : Set to 0
1316 * - Device address : Set to current address
1317 * - Rx histogram statistc : Set to 0
1318 *
1319 * In addition, the CFG80211 work queue is also created.
1320 */
1321 void mwifiex_init_priv_params(struct mwifiex_private *priv,
1322 struct net_device *dev)
1323 {
1324 dev->netdev_ops = &mwifiex_netdev_ops;
1325 dev->needs_free_netdev = true;
1326 /* Initialize private structure */
1327 priv->current_key_index = 0;
1328 priv->media_connected = false;
1329 memset(priv->mgmt_ie, 0,
1330 sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX);
1331 priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK;
1332 priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK;
1333 priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK;
1334 priv->gen_idx = MWIFIEX_AUTO_IDX_MASK;
1335 priv->num_tx_timeout = 0;
1336 if (is_valid_ether_addr(dev->dev_addr))
1337 ether_addr_copy(priv->curr_addr, dev->dev_addr);
1338 else
1339 ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr);
1340
1341 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
1342 GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
1343 priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL);
1344 if (priv->hist_data)
1345 mwifiex_hist_data_reset(priv);
1346 }
1347 }
1348
1349 /*
1350 * This function check if command is pending.
1351 */
1352 int is_command_pending(struct mwifiex_adapter *adapter)
1353 {
1354 int is_cmd_pend_q_empty;
1355
1356 spin_lock_bh(&adapter->cmd_pending_q_lock);
1357 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
1358 spin_unlock_bh(&adapter->cmd_pending_q_lock);
1359
1360 return !is_cmd_pend_q_empty;
1361 }
1362
1363 /*
1364 * This is the RX work queue function.
1365 *
1366 * It handles the RX operations.
1367 */
1368 static void mwifiex_rx_work_queue(struct work_struct *work)
1369 {
1370 struct mwifiex_adapter *adapter =
1371 container_of(work, struct mwifiex_adapter, rx_work);
1372
1373 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1374 return;
1375 mwifiex_process_rx(adapter);
1376 }
1377
1378 /*
1379 * This is the main work queue function.
1380 *
1381 * It handles the main process, which in turn handles the complete
1382 * driver operations.
1383 */
1384 static void mwifiex_main_work_queue(struct work_struct *work)
1385 {
1386 struct mwifiex_adapter *adapter =
1387 container_of(work, struct mwifiex_adapter, main_work);
1388
1389 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1390 return;
1391 mwifiex_main_process(adapter);
1392 }
1393
1394 /* Common teardown code used for both device removal and reset */
1395 static void mwifiex_uninit_sw(struct mwifiex_adapter *adapter)
1396 {
1397 struct mwifiex_private *priv;
1398 int i;
1399
1400 /* We can no longer handle interrupts once we start doing the teardown
1401 * below.
1402 */
1403 if (adapter->if_ops.disable_int)
1404 adapter->if_ops.disable_int(adapter);
1405
1406 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1407 mwifiex_terminate_workqueue(adapter);
1408 adapter->int_status = 0;
1409
1410 /* Stop data */
1411 for (i = 0; i < adapter->priv_num; i++) {
1412 priv = adapter->priv[i];
1413 if (priv && priv->netdev) {
1414 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
1415 if (netif_carrier_ok(priv->netdev))
1416 netif_carrier_off(priv->netdev);
1417 netif_device_detach(priv->netdev);
1418 }
1419 }
1420
1421 mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n");
1422 mwifiex_shutdown_drv(adapter);
1423 mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n");
1424
1425 if (atomic_read(&adapter->rx_pending) ||
1426 atomic_read(&adapter->tx_pending) ||
1427 atomic_read(&adapter->cmd_pending)) {
1428 mwifiex_dbg(adapter, ERROR,
1429 "rx_pending=%d, tx_pending=%d,\t"
1430 "cmd_pending=%d\n",
1431 atomic_read(&adapter->rx_pending),
1432 atomic_read(&adapter->tx_pending),
1433 atomic_read(&adapter->cmd_pending));
1434 }
1435
1436 for (i = 0; i < adapter->priv_num; i++) {
1437 priv = adapter->priv[i];
1438 if (!priv)
1439 continue;
1440 rtnl_lock();
1441 if (priv->netdev &&
1442 priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED)
1443 mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
1444 rtnl_unlock();
1445 }
1446
1447 wiphy_unregister(adapter->wiphy);
1448 wiphy_free(adapter->wiphy);
1449 adapter->wiphy = NULL;
1450
1451 vfree(adapter->chan_stats);
1452 mwifiex_free_cmd_buffers(adapter);
1453 }
1454
1455 /*
1456 * This function gets called during PCIe function level reset.
1457 */
1458 int mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
1459 {
1460 struct mwifiex_private *priv;
1461
1462 if (!adapter)
1463 return 0;
1464
1465 wait_for_completion(adapter->fw_done);
1466 /* Caller should ensure we aren't suspending while this happens */
1467 reinit_completion(adapter->fw_done);
1468
1469 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1470 mwifiex_deauthenticate(priv, NULL);
1471
1472 mwifiex_uninit_sw(adapter);
1473 adapter->is_up = false;
1474
1475 if (adapter->if_ops.down_dev)
1476 adapter->if_ops.down_dev(adapter);
1477
1478 return 0;
1479 }
1480 EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw);
1481
1482 /* This function gets called during PCIe function level reset. Required
1483 * code is extracted from mwifiex_add_card()
1484 */
1485 int
1486 mwifiex_reinit_sw(struct mwifiex_adapter *adapter)
1487 {
1488 int ret;
1489
1490 mwifiex_init_lock_list(adapter);
1491 if (adapter->if_ops.up_dev)
1492 adapter->if_ops.up_dev(adapter);
1493
1494 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1495 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1496 init_waitqueue_head(&adapter->init_wait_q);
1497 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
1498 adapter->hs_activated = false;
1499 clear_bit(MWIFIEX_IS_CMD_TIMEDOUT, &adapter->work_flags);
1500 init_waitqueue_head(&adapter->hs_activate_wait_q);
1501 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1502 adapter->cmd_wait_q.status = 0;
1503 adapter->scan_wait_q_woken = false;
1504
1505 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1506 adapter->rx_work_enabled = true;
1507
1508 adapter->workqueue =
1509 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1510 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1511 if (!adapter->workqueue)
1512 goto err_kmalloc;
1513
1514 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1515
1516 if (adapter->rx_work_enabled) {
1517 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1518 WQ_HIGHPRI |
1519 WQ_MEM_RECLAIM |
1520 WQ_UNBOUND, 1);
1521 if (!adapter->rx_workqueue)
1522 goto err_kmalloc;
1523 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1524 }
1525
1526 /* Register the device. Fill up the private data structure with
1527 * relevant information from the card. Some code extracted from
1528 * mwifiex_register_dev()
1529 */
1530 mwifiex_dbg(adapter, INFO, "%s, mwifiex_init_hw_fw()...\n", __func__);
1531
1532 if (mwifiex_init_hw_fw(adapter, false)) {
1533 mwifiex_dbg(adapter, ERROR,
1534 "%s: firmware init failed\n", __func__);
1535 goto err_init_fw;
1536 }
1537
1538 /* _mwifiex_fw_dpc() does its own cleanup */
1539 ret = _mwifiex_fw_dpc(adapter->firmware, adapter);
1540 if (ret) {
1541 pr_err("Failed to bring up adapter: %d\n", ret);
1542 return ret;
1543 }
1544 mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
1545
1546 return 0;
1547
1548 err_init_fw:
1549 mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__);
1550 if (adapter->if_ops.unregister_dev)
1551 adapter->if_ops.unregister_dev(adapter);
1552
1553 err_kmalloc:
1554 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1555 mwifiex_terminate_workqueue(adapter);
1556 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1557 mwifiex_dbg(adapter, ERROR,
1558 "info: %s: shutdown mwifiex\n", __func__);
1559 mwifiex_shutdown_drv(adapter);
1560 mwifiex_free_cmd_buffers(adapter);
1561 }
1562
1563 complete_all(adapter->fw_done);
1564 mwifiex_dbg(adapter, INFO, "%s, error\n", __func__);
1565
1566 return -1;
1567 }
1568 EXPORT_SYMBOL_GPL(mwifiex_reinit_sw);
1569
1570 static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv)
1571 {
1572 struct mwifiex_adapter *adapter = priv;
1573
1574 dev_dbg(adapter->dev, "%s: wake by wifi", __func__);
1575 adapter->wake_by_wifi = true;
1576 disable_irq_nosync(irq);
1577
1578 /* Notify PM core we are wakeup source */
1579 pm_wakeup_event(adapter->dev, 0);
1580 pm_system_wakeup();
1581
1582 return IRQ_HANDLED;
1583 }
1584
1585 static void mwifiex_probe_of(struct mwifiex_adapter *adapter)
1586 {
1587 int ret;
1588 struct device *dev = adapter->dev;
1589
1590 if (!dev->of_node)
1591 goto err_exit;
1592
1593 adapter->dt_node = dev->of_node;
1594 adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0);
1595 if (!adapter->irq_wakeup) {
1596 dev_dbg(dev, "fail to parse irq_wakeup from device tree\n");
1597 goto err_exit;
1598 }
1599
1600 ret = devm_request_irq(dev, adapter->irq_wakeup,
1601 mwifiex_irq_wakeup_handler, IRQF_TRIGGER_LOW,
1602 "wifi_wake", adapter);
1603 if (ret) {
1604 dev_err(dev, "Failed to request irq_wakeup %d (%d)\n",
1605 adapter->irq_wakeup, ret);
1606 goto err_exit;
1607 }
1608
1609 disable_irq(adapter->irq_wakeup);
1610 if (device_init_wakeup(dev, true)) {
1611 dev_err(dev, "fail to init wakeup for mwifiex\n");
1612 goto err_exit;
1613 }
1614 return;
1615
1616 err_exit:
1617 adapter->irq_wakeup = -1;
1618 }
1619
1620 /*
1621 * This function adds the card.
1622 *
1623 * This function follows the following major steps to set up the device -
1624 * - Initialize software. This includes probing the card, registering
1625 * the interface operations table, and allocating/initializing the
1626 * adapter structure
1627 * - Set up the netlink socket
1628 * - Create and start the main work queue
1629 * - Register the device
1630 * - Initialize firmware and hardware
1631 * - Add logical interfaces
1632 */
1633 int
1634 mwifiex_add_card(void *card, struct completion *fw_done,
1635 struct mwifiex_if_ops *if_ops, u8 iface_type,
1636 struct device *dev)
1637 {
1638 struct mwifiex_adapter *adapter;
1639
1640 if (mwifiex_register(card, dev, if_ops, (void **)&adapter)) {
1641 pr_err("%s: software init failed\n", __func__);
1642 goto err_init_sw;
1643 }
1644
1645 mwifiex_probe_of(adapter);
1646
1647 adapter->iface_type = iface_type;
1648 adapter->fw_done = fw_done;
1649
1650 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1651 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1652 init_waitqueue_head(&adapter->init_wait_q);
1653 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
1654 adapter->hs_activated = false;
1655 init_waitqueue_head(&adapter->hs_activate_wait_q);
1656 init_waitqueue_head(&adapter->cmd_wait_q.wait);
1657 adapter->cmd_wait_q.status = 0;
1658 adapter->scan_wait_q_woken = false;
1659
1660 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1661 adapter->rx_work_enabled = true;
1662
1663 adapter->workqueue =
1664 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1665 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1666 if (!adapter->workqueue)
1667 goto err_kmalloc;
1668
1669 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1670
1671 if (adapter->rx_work_enabled) {
1672 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1673 WQ_HIGHPRI |
1674 WQ_MEM_RECLAIM |
1675 WQ_UNBOUND, 1);
1676 if (!adapter->rx_workqueue)
1677 goto err_kmalloc;
1678
1679 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1680 }
1681
1682 /* Register the device. Fill up the private data structure with relevant
1683 information from the card. */
1684 if (adapter->if_ops.register_dev(adapter)) {
1685 pr_err("%s: failed to register mwifiex device\n", __func__);
1686 goto err_registerdev;
1687 }
1688
1689 if (mwifiex_init_hw_fw(adapter, true)) {
1690 pr_err("%s: firmware init failed\n", __func__);
1691 goto err_init_fw;
1692 }
1693
1694 return 0;
1695
1696 err_init_fw:
1697 pr_debug("info: %s: unregister device\n", __func__);
1698 if (adapter->if_ops.unregister_dev)
1699 adapter->if_ops.unregister_dev(adapter);
1700 err_registerdev:
1701 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1702 mwifiex_terminate_workqueue(adapter);
1703 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1704 pr_debug("info: %s: shutdown mwifiex\n", __func__);
1705 mwifiex_shutdown_drv(adapter);
1706 mwifiex_free_cmd_buffers(adapter);
1707 }
1708 err_kmalloc:
1709 if (adapter->irq_wakeup >= 0)
1710 device_init_wakeup(adapter->dev, false);
1711 mwifiex_free_adapter(adapter);
1712
1713 err_init_sw:
1714
1715 return -1;
1716 }
1717 EXPORT_SYMBOL_GPL(mwifiex_add_card);
1718
1719 /*
1720 * This function removes the card.
1721 *
1722 * This function follows the following major steps to remove the device -
1723 * - Stop data traffic
1724 * - Shutdown firmware
1725 * - Remove the logical interfaces
1726 * - Terminate the work queue
1727 * - Unregister the device
1728 * - Free the adapter structure
1729 */
1730 int mwifiex_remove_card(struct mwifiex_adapter *adapter)
1731 {
1732 if (!adapter)
1733 return 0;
1734
1735 if (adapter->is_up)
1736 mwifiex_uninit_sw(adapter);
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 return 0;
1752 }
1753 EXPORT_SYMBOL_GPL(mwifiex_remove_card);
1754
1755 void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
1756 const char *fmt, ...)
1757 {
1758 struct va_format vaf;
1759 va_list args;
1760
1761 if (!(adapter->debug_mask & mask))
1762 return;
1763
1764 va_start(args, fmt);
1765
1766 vaf.fmt = fmt;
1767 vaf.va = &args;
1768
1769 if (adapter->dev)
1770 dev_info(adapter->dev, "%pV", &vaf);
1771 else
1772 pr_info("%pV", &vaf);
1773
1774 va_end(args);
1775 }
1776 EXPORT_SYMBOL_GPL(_mwifiex_dbg);
1777
1778 /*
1779 * This function initializes the module.
1780 *
1781 * The debug FS is also initialized if configured.
1782 */
1783 static int
1784 mwifiex_init_module(void)
1785 {
1786 #ifdef CONFIG_DEBUG_FS
1787 mwifiex_debugfs_init();
1788 #endif
1789 return 0;
1790 }
1791
1792 /*
1793 * This function cleans up the module.
1794 *
1795 * The debug FS is removed if available.
1796 */
1797 static void
1798 mwifiex_cleanup_module(void)
1799 {
1800 #ifdef CONFIG_DEBUG_FS
1801 mwifiex_debugfs_remove();
1802 #endif
1803 }
1804
1805 module_init(mwifiex_init_module);
1806 module_exit(mwifiex_cleanup_module);
1807
1808 MODULE_AUTHOR("Marvell International Ltd.");
1809 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION);
1810 MODULE_VERSION(VERSION);
1811 MODULE_LICENSE("GPL v2");
Linux with added FPC-III support