1 // SPDX-License-Identifier: BSD-3-Clause-Clear
2 /*
3 * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
4 * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
5 */
6
7 #if defined(__FreeBSD__)
8 #define LINUXKPI_PARAM_PREFIX ath12k_core_
9 #endif
10
11 #include <linux/module.h>
12 #include <linux/slab.h>
13 #include <linux/remoteproc.h>
14 #include <linux/firmware.h>
15 #include <linux/of.h>
16 #if defined(__FreeBSD__)
17 #include <linux/delay.h>
18 #endif
19 #include "core.h"
20 #include "dp_tx.h"
21 #include "dp_rx.h"
22 #include "debug.h"
23 #include "hif.h"
24
25 unsigned int ath12k_debug_mask;
26 module_param_named(debug_mask, ath12k_debug_mask, uint, 0644);
27 MODULE_PARM_DESC(debug_mask, "Debugging mask");
28
ath12k_core_suspend(struct ath12k_base * ab)29 int ath12k_core_suspend(struct ath12k_base *ab)
30 {
31 int ret;
32
33 if (!ab->hw_params->supports_suspend)
34 return -EOPNOTSUPP;
35
36 /* TODO: there can frames in queues so for now add delay as a hack.
37 * Need to implement to handle and remove this delay.
38 */
39 #if defined(__linux__)
40 msleep(500);
41 #elif defined(__FreeBSD__)
42 linux_msleep(500);
43 #endif
44
45 ret = ath12k_dp_rx_pktlog_stop(ab, true);
46 if (ret) {
47 ath12k_warn(ab, "failed to stop dp rx (and timer) pktlog during suspend: %d\n",
48 ret);
49 return ret;
50 }
51
52 ret = ath12k_dp_rx_pktlog_stop(ab, false);
53 if (ret) {
54 ath12k_warn(ab, "failed to stop dp rx pktlog during suspend: %d\n",
55 ret);
56 return ret;
57 }
58
59 ath12k_hif_irq_disable(ab);
60 ath12k_hif_ce_irq_disable(ab);
61
62 ret = ath12k_hif_suspend(ab);
63 if (ret) {
64 ath12k_warn(ab, "failed to suspend hif: %d\n", ret);
65 return ret;
66 }
67
68 return 0;
69 }
70
ath12k_core_resume(struct ath12k_base * ab)71 int ath12k_core_resume(struct ath12k_base *ab)
72 {
73 int ret;
74
75 if (!ab->hw_params->supports_suspend)
76 return -EOPNOTSUPP;
77
78 ret = ath12k_hif_resume(ab);
79 if (ret) {
80 ath12k_warn(ab, "failed to resume hif during resume: %d\n", ret);
81 return ret;
82 }
83
84 ath12k_hif_ce_irq_enable(ab);
85 ath12k_hif_irq_enable(ab);
86
87 ret = ath12k_dp_rx_pktlog_start(ab);
88 if (ret) {
89 ath12k_warn(ab, "failed to start rx pktlog during resume: %d\n",
90 ret);
91 return ret;
92 }
93
94 return 0;
95 }
96
ath12k_core_create_board_name(struct ath12k_base * ab,char * name,size_t name_len)97 static int ath12k_core_create_board_name(struct ath12k_base *ab, char *name,
98 size_t name_len)
99 {
100 /* strlen(',variant=') + strlen(ab->qmi.target.bdf_ext) */
101 char variant[9 + ATH12K_QMI_BDF_EXT_STR_LENGTH] = { 0 };
102
103 if (ab->qmi.target.bdf_ext[0] != '\0')
104 scnprintf(variant, sizeof(variant), ",variant=%s",
105 ab->qmi.target.bdf_ext);
106
107 scnprintf(name, name_len,
108 "bus=%s,qmi-chip-id=%d,qmi-board-id=%d%s",
109 ath12k_bus_str(ab->hif.bus),
110 ab->qmi.target.chip_id,
111 ab->qmi.target.board_id, variant);
112
113 ath12k_dbg(ab, ATH12K_DBG_BOOT, "boot using board name '%s'\n", name);
114
115 return 0;
116 }
117
ath12k_core_firmware_request(struct ath12k_base * ab,const char * file)118 const struct firmware *ath12k_core_firmware_request(struct ath12k_base *ab,
119 const char *file)
120 {
121 const struct firmware *fw;
122 char path[100];
123 int ret;
124
125 if (!file)
126 return ERR_PTR(-ENOENT);
127
128 ath12k_core_create_firmware_path(ab, file, path, sizeof(path));
129
130 ret = firmware_request_nowarn(&fw, path, ab->dev);
131 if (ret)
132 return ERR_PTR(ret);
133
134 ath12k_dbg(ab, ATH12K_DBG_BOOT, "boot firmware request %s size %zu\n",
135 path, fw->size);
136
137 return fw;
138 }
139
ath12k_core_free_bdf(struct ath12k_base * ab,struct ath12k_board_data * bd)140 void ath12k_core_free_bdf(struct ath12k_base *ab, struct ath12k_board_data *bd)
141 {
142 if (!IS_ERR(bd->fw))
143 release_firmware(bd->fw);
144
145 memset(bd, 0, sizeof(*bd));
146 }
147
ath12k_core_parse_bd_ie_board(struct ath12k_base * ab,struct ath12k_board_data * bd,const void * buf,size_t buf_len,const char * boardname,int bd_ie_type)148 static int ath12k_core_parse_bd_ie_board(struct ath12k_base *ab,
149 struct ath12k_board_data *bd,
150 #if defined(__linux__)
151 const void *buf, size_t buf_len,
152 #elif defined(__FreeBSD__)
153 const u8 *buf, size_t buf_len,
154 #endif
155 const char *boardname,
156 int bd_ie_type)
157 {
158 const struct ath12k_fw_ie *hdr;
159 bool name_match_found;
160 int ret, board_ie_id;
161 size_t board_ie_len;
162 const void *board_ie_data;
163
164 name_match_found = false;
165
166 /* go through ATH12K_BD_IE_BOARD_ elements */
167 while (buf_len > sizeof(struct ath12k_fw_ie)) {
168 #if defined(__linux__)
169 hdr = buf;
170 #elif defined(__FreeBSD__)
171 hdr = (const struct ath12k_fw_ie *)buf;
172 #endif
173 board_ie_id = le32_to_cpu(hdr->id);
174 board_ie_len = le32_to_cpu(hdr->len);
175 board_ie_data = hdr->data;
176
177 buf_len -= sizeof(*hdr);
178 buf += sizeof(*hdr);
179
180 if (buf_len < ALIGN(board_ie_len, 4)) {
181 ath12k_err(ab, "invalid ATH12K_BD_IE_BOARD length: %zu < %zu\n",
182 buf_len, ALIGN(board_ie_len, 4));
183 ret = -EINVAL;
184 goto out;
185 }
186
187 switch (board_ie_id) {
188 case ATH12K_BD_IE_BOARD_NAME:
189 ath12k_dbg_dump(ab, ATH12K_DBG_BOOT, "board name", "",
190 board_ie_data, board_ie_len);
191
192 if (board_ie_len != strlen(boardname))
193 break;
194
195 ret = memcmp(board_ie_data, boardname, strlen(boardname));
196 if (ret)
197 break;
198
199 name_match_found = true;
200 ath12k_dbg(ab, ATH12K_DBG_BOOT,
201 "boot found match for name '%s'",
202 boardname);
203 break;
204 case ATH12K_BD_IE_BOARD_DATA:
205 if (!name_match_found)
206 /* no match found */
207 break;
208
209 ath12k_dbg(ab, ATH12K_DBG_BOOT,
210 "boot found board data for '%s'", boardname);
211
212 bd->data = board_ie_data;
213 bd->len = board_ie_len;
214
215 ret = 0;
216 goto out;
217 default:
218 ath12k_warn(ab, "unknown ATH12K_BD_IE_BOARD found: %d\n",
219 board_ie_id);
220 break;
221 }
222
223 /* jump over the padding */
224 board_ie_len = ALIGN(board_ie_len, 4);
225
226 buf_len -= board_ie_len;
227 buf += board_ie_len;
228 }
229
230 /* no match found */
231 ret = -ENOENT;
232
233 out:
234 return ret;
235 }
236
ath12k_core_fetch_board_data_api_n(struct ath12k_base * ab,struct ath12k_board_data * bd,const char * boardname)237 static int ath12k_core_fetch_board_data_api_n(struct ath12k_base *ab,
238 struct ath12k_board_data *bd,
239 const char *boardname)
240 {
241 size_t len, magic_len;
242 const u8 *data;
243 char *filename, filepath[100];
244 size_t ie_len;
245 #if defined(__linux__)
246 struct ath12k_fw_ie *hdr;
247 #elif defined(__FreeBSD__)
248 const struct ath12k_fw_ie *hdr;
249 #endif
250 int ret, ie_id;
251
252 filename = ATH12K_BOARD_API2_FILE;
253
254 if (!bd->fw)
255 bd->fw = ath12k_core_firmware_request(ab, filename);
256
257 if (IS_ERR(bd->fw))
258 return PTR_ERR(bd->fw);
259
260 data = bd->fw->data;
261 len = bd->fw->size;
262
263 ath12k_core_create_firmware_path(ab, filename,
264 filepath, sizeof(filepath));
265
266 /* magic has extra null byte padded */
267 magic_len = strlen(ATH12K_BOARD_MAGIC) + 1;
268 if (len < magic_len) {
269 ath12k_err(ab, "failed to find magic value in %s, file too short: %zu\n",
270 filepath, len);
271 ret = -EINVAL;
272 goto err;
273 }
274
275 if (memcmp(data, ATH12K_BOARD_MAGIC, magic_len)) {
276 ath12k_err(ab, "found invalid board magic\n");
277 ret = -EINVAL;
278 goto err;
279 }
280
281 /* magic is padded to 4 bytes */
282 magic_len = ALIGN(magic_len, 4);
283 if (len < magic_len) {
284 ath12k_err(ab, "failed: %s too small to contain board data, len: %zu\n",
285 filepath, len);
286 ret = -EINVAL;
287 goto err;
288 }
289
290 data += magic_len;
291 len -= magic_len;
292
293 while (len > sizeof(struct ath12k_fw_ie)) {
294 #if defined(__linux__)
295 hdr = (struct ath12k_fw_ie *)data;
296 #elif defined(__FreeBSD__)
297 hdr = (const struct ath12k_fw_ie *)data;
298 #endif
299 ie_id = le32_to_cpu(hdr->id);
300 ie_len = le32_to_cpu(hdr->len);
301
302 len -= sizeof(*hdr);
303 data = hdr->data;
304
305 if (len < ALIGN(ie_len, 4)) {
306 ath12k_err(ab, "invalid length for board ie_id %d ie_len %zu len %zu\n",
307 ie_id, ie_len, len);
308 ret = -EINVAL;
309 goto err;
310 }
311
312 switch (ie_id) {
313 case ATH12K_BD_IE_BOARD:
314 ret = ath12k_core_parse_bd_ie_board(ab, bd, data,
315 ie_len,
316 boardname,
317 ATH12K_BD_IE_BOARD);
318 if (ret == -ENOENT)
319 /* no match found, continue */
320 break;
321 else if (ret)
322 /* there was an error, bail out */
323 goto err;
324 /* either found or error, so stop searching */
325 goto out;
326 }
327
328 /* jump over the padding */
329 ie_len = ALIGN(ie_len, 4);
330
331 len -= ie_len;
332 data += ie_len;
333 }
334
335 out:
336 if (!bd->data || !bd->len) {
337 ath12k_err(ab,
338 "failed to fetch board data for %s from %s\n",
339 boardname, filepath);
340 ret = -ENODATA;
341 goto err;
342 }
343
344 return 0;
345
346 err:
347 ath12k_core_free_bdf(ab, bd);
348 return ret;
349 }
350
ath12k_core_fetch_board_data_api_1(struct ath12k_base * ab,struct ath12k_board_data * bd,char * filename)351 int ath12k_core_fetch_board_data_api_1(struct ath12k_base *ab,
352 struct ath12k_board_data *bd,
353 char *filename)
354 {
355 bd->fw = ath12k_core_firmware_request(ab, filename);
356 if (IS_ERR(bd->fw))
357 return PTR_ERR(bd->fw);
358
359 bd->data = bd->fw->data;
360 bd->len = bd->fw->size;
361
362 return 0;
363 }
364
365 #define BOARD_NAME_SIZE 100
ath12k_core_fetch_bdf(struct ath12k_base * ab,struct ath12k_board_data * bd)366 int ath12k_core_fetch_bdf(struct ath12k_base *ab, struct ath12k_board_data *bd)
367 {
368 char boardname[BOARD_NAME_SIZE];
369 int ret;
370
371 ret = ath12k_core_create_board_name(ab, boardname, BOARD_NAME_SIZE);
372 if (ret) {
373 ath12k_err(ab, "failed to create board name: %d", ret);
374 return ret;
375 }
376
377 ab->bd_api = 2;
378 ret = ath12k_core_fetch_board_data_api_n(ab, bd, boardname);
379 if (!ret)
380 goto success;
381
382 ab->bd_api = 1;
383 ret = ath12k_core_fetch_board_data_api_1(ab, bd, ATH12K_DEFAULT_BOARD_FILE);
384 if (ret) {
385 ath12k_err(ab, "failed to fetch board-2.bin or board.bin from %s\n",
386 ab->hw_params->fw.dir);
387 return ret;
388 }
389
390 success:
391 ath12k_dbg(ab, ATH12K_DBG_BOOT, "using board api %d\n", ab->bd_api);
392 return 0;
393 }
394
ath12k_core_stop(struct ath12k_base * ab)395 static void ath12k_core_stop(struct ath12k_base *ab)
396 {
397 if (!test_bit(ATH12K_FLAG_CRASH_FLUSH, &ab->dev_flags))
398 ath12k_qmi_firmware_stop(ab);
399
400 ath12k_hif_stop(ab);
401 ath12k_wmi_detach(ab);
402 ath12k_dp_rx_pdev_reo_cleanup(ab);
403
404 /* De-Init of components as needed */
405 }
406
ath12k_core_soc_create(struct ath12k_base * ab)407 static int ath12k_core_soc_create(struct ath12k_base *ab)
408 {
409 int ret;
410
411 ret = ath12k_qmi_init_service(ab);
412 if (ret) {
413 ath12k_err(ab, "failed to initialize qmi :%d\n", ret);
414 return ret;
415 }
416
417 ret = ath12k_hif_power_up(ab);
418 if (ret) {
419 ath12k_err(ab, "failed to power up :%d\n", ret);
420 goto err_qmi_deinit;
421 }
422
423 return 0;
424
425 err_qmi_deinit:
426 ath12k_qmi_deinit_service(ab);
427 return ret;
428 }
429
ath12k_core_soc_destroy(struct ath12k_base * ab)430 static void ath12k_core_soc_destroy(struct ath12k_base *ab)
431 {
432 ath12k_dp_free(ab);
433 ath12k_reg_free(ab);
434 ath12k_qmi_deinit_service(ab);
435 }
436
ath12k_core_pdev_create(struct ath12k_base * ab)437 static int ath12k_core_pdev_create(struct ath12k_base *ab)
438 {
439 int ret;
440
441 ret = ath12k_mac_register(ab);
442 if (ret) {
443 ath12k_err(ab, "failed register the radio with mac80211: %d\n", ret);
444 return ret;
445 }
446
447 ret = ath12k_dp_pdev_alloc(ab);
448 if (ret) {
449 ath12k_err(ab, "failed to attach DP pdev: %d\n", ret);
450 goto err_mac_unregister;
451 }
452
453 return 0;
454
455 err_mac_unregister:
456 ath12k_mac_unregister(ab);
457
458 return ret;
459 }
460
ath12k_core_pdev_destroy(struct ath12k_base * ab)461 static void ath12k_core_pdev_destroy(struct ath12k_base *ab)
462 {
463 ath12k_mac_unregister(ab);
464 ath12k_hif_irq_disable(ab);
465 ath12k_dp_pdev_free(ab);
466 }
467
ath12k_core_start(struct ath12k_base * ab,enum ath12k_firmware_mode mode)468 static int ath12k_core_start(struct ath12k_base *ab,
469 enum ath12k_firmware_mode mode)
470 {
471 int ret;
472
473 ret = ath12k_wmi_attach(ab);
474 if (ret) {
475 ath12k_err(ab, "failed to attach wmi: %d\n", ret);
476 return ret;
477 }
478
479 ret = ath12k_htc_init(ab);
480 if (ret) {
481 ath12k_err(ab, "failed to init htc: %d\n", ret);
482 goto err_wmi_detach;
483 }
484
485 ret = ath12k_hif_start(ab);
486 if (ret) {
487 ath12k_err(ab, "failed to start HIF: %d\n", ret);
488 goto err_wmi_detach;
489 }
490
491 ret = ath12k_htc_wait_target(&ab->htc);
492 if (ret) {
493 ath12k_err(ab, "failed to connect to HTC: %d\n", ret);
494 goto err_hif_stop;
495 }
496
497 ret = ath12k_dp_htt_connect(&ab->dp);
498 if (ret) {
499 ath12k_err(ab, "failed to connect to HTT: %d\n", ret);
500 goto err_hif_stop;
501 }
502
503 ret = ath12k_wmi_connect(ab);
504 if (ret) {
505 ath12k_err(ab, "failed to connect wmi: %d\n", ret);
506 goto err_hif_stop;
507 }
508
509 ret = ath12k_htc_start(&ab->htc);
510 if (ret) {
511 ath12k_err(ab, "failed to start HTC: %d\n", ret);
512 goto err_hif_stop;
513 }
514
515 ret = ath12k_wmi_wait_for_service_ready(ab);
516 if (ret) {
517 ath12k_err(ab, "failed to receive wmi service ready event: %d\n",
518 ret);
519 goto err_hif_stop;
520 }
521
522 ret = ath12k_mac_allocate(ab);
523 if (ret) {
524 ath12k_err(ab, "failed to create new hw device with mac80211 :%d\n",
525 ret);
526 goto err_hif_stop;
527 }
528
529 ath12k_dp_cc_config(ab);
530
531 ath12k_dp_pdev_pre_alloc(ab);
532
533 ret = ath12k_dp_rx_pdev_reo_setup(ab);
534 if (ret) {
535 ath12k_err(ab, "failed to initialize reo destination rings: %d\n", ret);
536 goto err_mac_destroy;
537 }
538
539 ret = ath12k_wmi_cmd_init(ab);
540 if (ret) {
541 ath12k_err(ab, "failed to send wmi init cmd: %d\n", ret);
542 goto err_reo_cleanup;
543 }
544
545 ret = ath12k_wmi_wait_for_unified_ready(ab);
546 if (ret) {
547 ath12k_err(ab, "failed to receive wmi unified ready event: %d\n",
548 ret);
549 goto err_reo_cleanup;
550 }
551
552 /* put hardware to DBS mode */
553 if (ab->hw_params->single_pdev_only) {
554 ret = ath12k_wmi_set_hw_mode(ab, WMI_HOST_HW_MODE_DBS);
555 if (ret) {
556 ath12k_err(ab, "failed to send dbs mode: %d\n", ret);
557 goto err_reo_cleanup;
558 }
559 }
560
561 ret = ath12k_dp_tx_htt_h2t_ver_req_msg(ab);
562 if (ret) {
563 ath12k_err(ab, "failed to send htt version request message: %d\n",
564 ret);
565 goto err_reo_cleanup;
566 }
567
568 return 0;
569
570 err_reo_cleanup:
571 ath12k_dp_rx_pdev_reo_cleanup(ab);
572 err_mac_destroy:
573 ath12k_mac_destroy(ab);
574 err_hif_stop:
575 ath12k_hif_stop(ab);
576 err_wmi_detach:
577 ath12k_wmi_detach(ab);
578 return ret;
579 }
580
ath12k_core_start_firmware(struct ath12k_base * ab,enum ath12k_firmware_mode mode)581 static int ath12k_core_start_firmware(struct ath12k_base *ab,
582 enum ath12k_firmware_mode mode)
583 {
584 int ret;
585
586 ath12k_ce_get_shadow_config(ab, &ab->qmi.ce_cfg.shadow_reg_v3,
587 &ab->qmi.ce_cfg.shadow_reg_v3_len);
588
589 ret = ath12k_qmi_firmware_start(ab, mode);
590 if (ret) {
591 ath12k_err(ab, "failed to send firmware start: %d\n", ret);
592 return ret;
593 }
594
595 return ret;
596 }
597
ath12k_core_qmi_firmware_ready(struct ath12k_base * ab)598 int ath12k_core_qmi_firmware_ready(struct ath12k_base *ab)
599 {
600 int ret;
601
602 ret = ath12k_core_start_firmware(ab, ATH12K_FIRMWARE_MODE_NORMAL);
603 if (ret) {
604 ath12k_err(ab, "failed to start firmware: %d\n", ret);
605 return ret;
606 }
607
608 ret = ath12k_ce_init_pipes(ab);
609 if (ret) {
610 ath12k_err(ab, "failed to initialize CE: %d\n", ret);
611 goto err_firmware_stop;
612 }
613
614 ret = ath12k_dp_alloc(ab);
615 if (ret) {
616 ath12k_err(ab, "failed to init DP: %d\n", ret);
617 goto err_firmware_stop;
618 }
619
620 mutex_lock(&ab->core_lock);
621 ret = ath12k_core_start(ab, ATH12K_FIRMWARE_MODE_NORMAL);
622 if (ret) {
623 ath12k_err(ab, "failed to start core: %d\n", ret);
624 goto err_dp_free;
625 }
626
627 ret = ath12k_core_pdev_create(ab);
628 if (ret) {
629 ath12k_err(ab, "failed to create pdev core: %d\n", ret);
630 goto err_core_stop;
631 }
632 ath12k_hif_irq_enable(ab);
633 mutex_unlock(&ab->core_lock);
634
635 return 0;
636
637 err_core_stop:
638 ath12k_core_stop(ab);
639 ath12k_mac_destroy(ab);
640 err_dp_free:
641 ath12k_dp_free(ab);
642 mutex_unlock(&ab->core_lock);
643 err_firmware_stop:
644 ath12k_qmi_firmware_stop(ab);
645
646 return ret;
647 }
648
ath12k_core_reconfigure_on_crash(struct ath12k_base * ab)649 static int ath12k_core_reconfigure_on_crash(struct ath12k_base *ab)
650 {
651 int ret;
652
653 mutex_lock(&ab->core_lock);
654 ath12k_hif_irq_disable(ab);
655 ath12k_dp_pdev_free(ab);
656 ath12k_hif_stop(ab);
657 ath12k_wmi_detach(ab);
658 ath12k_dp_rx_pdev_reo_cleanup(ab);
659 mutex_unlock(&ab->core_lock);
660
661 ath12k_dp_free(ab);
662 ath12k_hal_srng_deinit(ab);
663
664 ab->free_vdev_map = (1LL << (ab->num_radios * TARGET_NUM_VDEVS)) - 1;
665
666 ret = ath12k_hal_srng_init(ab);
667 if (ret)
668 return ret;
669
670 clear_bit(ATH12K_FLAG_CRASH_FLUSH, &ab->dev_flags);
671
672 ret = ath12k_core_qmi_firmware_ready(ab);
673 if (ret)
674 goto err_hal_srng_deinit;
675
676 clear_bit(ATH12K_FLAG_RECOVERY, &ab->dev_flags);
677
678 return 0;
679
680 err_hal_srng_deinit:
681 ath12k_hal_srng_deinit(ab);
682 return ret;
683 }
684
ath12k_core_halt(struct ath12k * ar)685 void ath12k_core_halt(struct ath12k *ar)
686 {
687 struct ath12k_base *ab = ar->ab;
688
689 lockdep_assert_held(&ar->conf_mutex);
690
691 ar->num_created_vdevs = 0;
692 ar->allocated_vdev_map = 0;
693
694 ath12k_mac_scan_finish(ar);
695 ath12k_mac_peer_cleanup_all(ar);
696 cancel_delayed_work_sync(&ar->scan.timeout);
697 cancel_work_sync(&ar->regd_update_work);
698
699 rcu_assign_pointer(ab->pdevs_active[ar->pdev_idx], NULL);
700 synchronize_rcu();
701 INIT_LIST_HEAD(&ar->arvifs);
702 idr_init(&ar->txmgmt_idr);
703 }
704
ath12k_core_pre_reconfigure_recovery(struct ath12k_base * ab)705 static void ath12k_core_pre_reconfigure_recovery(struct ath12k_base *ab)
706 {
707 struct ath12k *ar;
708 struct ath12k_pdev *pdev;
709 int i;
710
711 spin_lock_bh(&ab->base_lock);
712 ab->stats.fw_crash_counter++;
713 spin_unlock_bh(&ab->base_lock);
714
715 for (i = 0; i < ab->num_radios; i++) {
716 pdev = &ab->pdevs[i];
717 ar = pdev->ar;
718 if (!ar || ar->state == ATH12K_STATE_OFF)
719 continue;
720
721 ieee80211_stop_queues(ar->hw);
722 ath12k_mac_drain_tx(ar);
723 complete(&ar->scan.started);
724 complete(&ar->scan.completed);
725 complete(&ar->peer_assoc_done);
726 complete(&ar->peer_delete_done);
727 complete(&ar->install_key_done);
728 complete(&ar->vdev_setup_done);
729 complete(&ar->vdev_delete_done);
730 complete(&ar->bss_survey_done);
731
732 wake_up(&ar->dp.tx_empty_waitq);
733 idr_for_each(&ar->txmgmt_idr,
734 ath12k_mac_tx_mgmt_pending_free, ar);
735 idr_destroy(&ar->txmgmt_idr);
736 wake_up(&ar->txmgmt_empty_waitq);
737 }
738
739 wake_up(&ab->wmi_ab.tx_credits_wq);
740 wake_up(&ab->peer_mapping_wq);
741 }
742
ath12k_core_post_reconfigure_recovery(struct ath12k_base * ab)743 static void ath12k_core_post_reconfigure_recovery(struct ath12k_base *ab)
744 {
745 struct ath12k *ar;
746 struct ath12k_pdev *pdev;
747 int i;
748
749 for (i = 0; i < ab->num_radios; i++) {
750 pdev = &ab->pdevs[i];
751 ar = pdev->ar;
752 if (!ar || ar->state == ATH12K_STATE_OFF)
753 continue;
754
755 mutex_lock(&ar->conf_mutex);
756
757 switch (ar->state) {
758 case ATH12K_STATE_ON:
759 ar->state = ATH12K_STATE_RESTARTING;
760 ath12k_core_halt(ar);
761 ieee80211_restart_hw(ar->hw);
762 break;
763 case ATH12K_STATE_OFF:
764 ath12k_warn(ab,
765 "cannot restart radio %d that hasn't been started\n",
766 i);
767 break;
768 case ATH12K_STATE_RESTARTING:
769 break;
770 case ATH12K_STATE_RESTARTED:
771 ar->state = ATH12K_STATE_WEDGED;
772 fallthrough;
773 case ATH12K_STATE_WEDGED:
774 ath12k_warn(ab,
775 "device is wedged, will not restart radio %d\n", i);
776 break;
777 }
778 mutex_unlock(&ar->conf_mutex);
779 }
780 complete(&ab->driver_recovery);
781 }
782
ath12k_core_restart(struct work_struct * work)783 static void ath12k_core_restart(struct work_struct *work)
784 {
785 struct ath12k_base *ab = container_of(work, struct ath12k_base, restart_work);
786 int ret;
787
788 if (!ab->is_reset)
789 ath12k_core_pre_reconfigure_recovery(ab);
790
791 ret = ath12k_core_reconfigure_on_crash(ab);
792 if (ret) {
793 ath12k_err(ab, "failed to reconfigure driver on crash recovery\n");
794 return;
795 }
796
797 if (ab->is_reset)
798 complete_all(&ab->reconfigure_complete);
799
800 if (!ab->is_reset)
801 ath12k_core_post_reconfigure_recovery(ab);
802 }
803
ath12k_core_reset(struct work_struct * work)804 static void ath12k_core_reset(struct work_struct *work)
805 {
806 struct ath12k_base *ab = container_of(work, struct ath12k_base, reset_work);
807 int reset_count, fail_cont_count;
808 long time_left;
809
810 if (!(test_bit(ATH12K_FLAG_REGISTERED, &ab->dev_flags))) {
811 ath12k_warn(ab, "ignore reset dev flags 0x%lx\n", ab->dev_flags);
812 return;
813 }
814
815 /* Sometimes the recovery will fail and then the next all recovery fail,
816 * this is to avoid infinite recovery since it can not recovery success
817 */
818 fail_cont_count = atomic_read(&ab->fail_cont_count);
819
820 if (fail_cont_count >= ATH12K_RESET_MAX_FAIL_COUNT_FINAL)
821 return;
822
823 if (fail_cont_count >= ATH12K_RESET_MAX_FAIL_COUNT_FIRST &&
824 time_before(jiffies, ab->reset_fail_timeout))
825 return;
826
827 reset_count = atomic_inc_return(&ab->reset_count);
828
829 if (reset_count > 1) {
830 /* Sometimes it happened another reset worker before the previous one
831 * completed, then the second reset worker will destroy the previous one,
832 * thus below is to avoid that.
833 */
834 ath12k_warn(ab, "already resetting count %d\n", reset_count);
835
836 reinit_completion(&ab->reset_complete);
837 time_left = wait_for_completion_timeout(&ab->reset_complete,
838 ATH12K_RESET_TIMEOUT_HZ);
839 if (time_left) {
840 ath12k_dbg(ab, ATH12K_DBG_BOOT, "to skip reset\n");
841 atomic_dec(&ab->reset_count);
842 return;
843 }
844
845 ab->reset_fail_timeout = jiffies + ATH12K_RESET_FAIL_TIMEOUT_HZ;
846 /* Record the continuous recovery fail count when recovery failed*/
847 fail_cont_count = atomic_inc_return(&ab->fail_cont_count);
848 }
849
850 ath12k_dbg(ab, ATH12K_DBG_BOOT, "reset starting\n");
851
852 ab->is_reset = true;
853 atomic_set(&ab->recovery_count, 0);
854
855 ath12k_core_pre_reconfigure_recovery(ab);
856
857 reinit_completion(&ab->reconfigure_complete);
858 ath12k_core_post_reconfigure_recovery(ab);
859
860 reinit_completion(&ab->recovery_start);
861 atomic_set(&ab->recovery_start_count, 0);
862
863 ath12k_dbg(ab, ATH12K_DBG_BOOT, "waiting recovery start...\n");
864
865 time_left = wait_for_completion_timeout(&ab->recovery_start,
866 ATH12K_RECOVER_START_TIMEOUT_HZ);
867
868 ath12k_hif_power_down(ab);
869 ath12k_hif_power_up(ab);
870
871 ath12k_dbg(ab, ATH12K_DBG_BOOT, "reset started\n");
872 }
873
ath12k_core_pre_init(struct ath12k_base * ab)874 int ath12k_core_pre_init(struct ath12k_base *ab)
875 {
876 int ret;
877
878 ret = ath12k_hw_init(ab);
879 if (ret) {
880 ath12k_err(ab, "failed to init hw params: %d\n", ret);
881 return ret;
882 }
883
884 return 0;
885 }
886
ath12k_core_init(struct ath12k_base * ab)887 int ath12k_core_init(struct ath12k_base *ab)
888 {
889 int ret;
890
891 ret = ath12k_core_soc_create(ab);
892 if (ret) {
893 ath12k_err(ab, "failed to create soc core: %d\n", ret);
894 return ret;
895 }
896
897 return 0;
898 }
899
ath12k_core_deinit(struct ath12k_base * ab)900 void ath12k_core_deinit(struct ath12k_base *ab)
901 {
902 mutex_lock(&ab->core_lock);
903
904 ath12k_core_pdev_destroy(ab);
905 ath12k_core_stop(ab);
906
907 mutex_unlock(&ab->core_lock);
908
909 ath12k_hif_power_down(ab);
910 ath12k_mac_destroy(ab);
911 ath12k_core_soc_destroy(ab);
912 }
913
ath12k_core_free(struct ath12k_base * ab)914 void ath12k_core_free(struct ath12k_base *ab)
915 {
916 timer_delete_sync(&ab->rx_replenish_retry);
917 destroy_workqueue(ab->workqueue_aux);
918 destroy_workqueue(ab->workqueue);
919 kfree(ab);
920 }
921
ath12k_core_alloc(struct device * dev,size_t priv_size,enum ath12k_bus bus)922 struct ath12k_base *ath12k_core_alloc(struct device *dev, size_t priv_size,
923 enum ath12k_bus bus)
924 {
925 struct ath12k_base *ab;
926
927 ab = kzalloc(sizeof(*ab) + priv_size, GFP_KERNEL);
928 if (!ab)
929 return NULL;
930
931 init_completion(&ab->driver_recovery);
932
933 ab->workqueue = create_singlethread_workqueue("ath12k_wq");
934 if (!ab->workqueue)
935 goto err_sc_free;
936
937 ab->workqueue_aux = create_singlethread_workqueue("ath12k_aux_wq");
938 if (!ab->workqueue_aux)
939 goto err_free_wq;
940
941 mutex_init(&ab->core_lock);
942 spin_lock_init(&ab->base_lock);
943 init_completion(&ab->reset_complete);
944 init_completion(&ab->reconfigure_complete);
945 init_completion(&ab->recovery_start);
946
947 INIT_LIST_HEAD(&ab->peers);
948 init_waitqueue_head(&ab->peer_mapping_wq);
949 init_waitqueue_head(&ab->wmi_ab.tx_credits_wq);
950 INIT_WORK(&ab->restart_work, ath12k_core_restart);
951 INIT_WORK(&ab->reset_work, ath12k_core_reset);
952 timer_setup(&ab->rx_replenish_retry, ath12k_ce_rx_replenish_retry, 0);
953 init_completion(&ab->htc_suspend);
954
955 ab->dev = dev;
956 ab->hif.bus = bus;
957
958 return ab;
959
960 err_free_wq:
961 destroy_workqueue(ab->workqueue);
962 err_sc_free:
963 kfree(ab);
964 return NULL;
965 }
966
967 MODULE_DESCRIPTION("Core module for Qualcomm Atheros 802.11be wireless LAN cards.");
968 MODULE_LICENSE("Dual BSD/GPL");
969