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1/*
2 * Copyright (c) 2005-2011 Atheros Communications Inc.
3 * Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#include <linux/module.h>
19#include <linux/firmware.h>
20
21#include "core.h"
22#include "mac.h"
23#include "htc.h"
24#include "hif.h"
25#include "wmi.h"
26#include "bmi.h"
27#include "debug.h"
28#include "htt.h"
29
30unsigned int ath10k_debug_mask;
31static bool uart_print;
32static unsigned int ath10k_p2p;
33module_param_named(debug_mask, ath10k_debug_mask, uint, 0644);
34module_param(uart_print, bool, 0644);
35module_param_named(p2p, ath10k_p2p, uint, 0644);
36MODULE_PARM_DESC(debug_mask, "Debugging mask");
37MODULE_PARM_DESC(uart_print, "Uart target debugging");
38MODULE_PARM_DESC(p2p, "Enable ath10k P2P support");
39
40static const struct ath10k_hw_params ath10k_hw_params_list[] = {
41 {
42 .id = QCA988X_HW_2_0_VERSION,
43 .name = "qca988x hw2.0",
44 .patch_load_addr = QCA988X_HW_2_0_PATCH_LOAD_ADDR,
45 .fw = {
46 .dir = QCA988X_HW_2_0_FW_DIR,
47 .fw = QCA988X_HW_2_0_FW_FILE,
48 .otp = QCA988X_HW_2_0_OTP_FILE,
49 .board = QCA988X_HW_2_0_BOARD_DATA_FILE,
50 },
51 },
52};
53
54static void ath10k_send_suspend_complete(struct ath10k *ar)
55{
56 ath10k_dbg(ATH10K_DBG_BOOT, "boot suspend complete\n");
57
58 complete(&ar->target_suspend);
59}
60
61static int ath10k_init_connect_htc(struct ath10k *ar)
62{
63 int status;
64
65 status = ath10k_wmi_connect_htc_service(ar);
66 if (status)
67 goto conn_fail;
68
69 /* Start HTC */
70 status = ath10k_htc_start(&ar->htc);
71 if (status)
72 goto conn_fail;
73
74 /* Wait for WMI event to be ready */
75 status = ath10k_wmi_wait_for_service_ready(ar);
76 if (status <= 0) {
77 ath10k_warn("wmi service ready event not received");
78 status = -ETIMEDOUT;
79 goto timeout;
80 }
81
82 ath10k_dbg(ATH10K_DBG_BOOT, "boot wmi ready\n");
83 return 0;
84
85timeout:
86 ath10k_htc_stop(&ar->htc);
87conn_fail:
88 return status;
89}
90
91static int ath10k_init_configure_target(struct ath10k *ar)
92{
93 u32 param_host;
94 int ret;
95
96 /* tell target which HTC version it is used*/
97 ret = ath10k_bmi_write32(ar, hi_app_host_interest,
98 HTC_PROTOCOL_VERSION);
99 if (ret) {
100 ath10k_err("settings HTC version failed\n");
101 return ret;
102 }
103
104 /* set the firmware mode to STA/IBSS/AP */
105 ret = ath10k_bmi_read32(ar, hi_option_flag, ¶m_host);
106 if (ret) {
107 ath10k_err("setting firmware mode (1/2) failed\n");
108 return ret;
109 }
110
111 /* TODO following parameters need to be re-visited. */
112 /* num_device */
113 param_host |= (1 << HI_OPTION_NUM_DEV_SHIFT);
114 /* Firmware mode */
115 /* FIXME: Why FW_MODE_AP ??.*/
116 param_host |= (HI_OPTION_FW_MODE_AP << HI_OPTION_FW_MODE_SHIFT);
117 /* mac_addr_method */
118 param_host |= (1 << HI_OPTION_MAC_ADDR_METHOD_SHIFT);
119 /* firmware_bridge */
120 param_host |= (0 << HI_OPTION_FW_BRIDGE_SHIFT);
121 /* fwsubmode */
122 param_host |= (0 << HI_OPTION_FW_SUBMODE_SHIFT);
123
124 ret = ath10k_bmi_write32(ar, hi_option_flag, param_host);
125 if (ret) {
126 ath10k_err("setting firmware mode (2/2) failed\n");
127 return ret;
128 }
129
130 /* We do all byte-swapping on the host */
131 ret = ath10k_bmi_write32(ar, hi_be, 0);
132 if (ret) {
133 ath10k_err("setting host CPU BE mode failed\n");
134 return ret;
135 }
136
137 /* FW descriptor/Data swap flags */
138 ret = ath10k_bmi_write32(ar, hi_fw_swap, 0);
139
140 if (ret) {
141 ath10k_err("setting FW data/desc swap flags failed\n");
142 return ret;
143 }
144
145 return 0;
146}
147
148static const struct firmware *ath10k_fetch_fw_file(struct ath10k *ar,
149 const char *dir,
150 const char *file)
151{
152 char filename[100];
153 const struct firmware *fw;
154 int ret;
155
156 if (file == NULL)
157 return ERR_PTR(-ENOENT);
158
159 if (dir == NULL)
160 dir = ".";
161
162 snprintf(filename, sizeof(filename), "%s/%s", dir, file);
163 ret = request_firmware(&fw, filename, ar->dev);
164 if (ret)
165 return ERR_PTR(ret);
166
167 return fw;
168}
169
170static int ath10k_push_board_ext_data(struct ath10k *ar)
171{
172 u32 board_data_size = QCA988X_BOARD_DATA_SZ;
173 u32 board_ext_data_size = QCA988X_BOARD_EXT_DATA_SZ;
174 u32 board_ext_data_addr;
175 int ret;
176
177 ret = ath10k_bmi_read32(ar, hi_board_ext_data, &board_ext_data_addr);
178 if (ret) {
179 ath10k_err("could not read board ext data addr (%d)\n", ret);
180 return ret;
181 }
182
183 ath10k_dbg(ATH10K_DBG_BOOT,
184 "boot push board extended data addr 0x%x\n",
185 board_ext_data_addr);
186
187 if (board_ext_data_addr == 0)
188 return 0;
189
190 if (ar->board_len != (board_data_size + board_ext_data_size)) {
191 ath10k_err("invalid board (ext) data sizes %zu != %d+%d\n",
192 ar->board_len, board_data_size, board_ext_data_size);
193 return -EINVAL;
194 }
195
196 ret = ath10k_bmi_write_memory(ar, board_ext_data_addr,
197 ar->board_data + board_data_size,
198 board_ext_data_size);
199 if (ret) {
200 ath10k_err("could not write board ext data (%d)\n", ret);
201 return ret;
202 }
203
204 ret = ath10k_bmi_write32(ar, hi_board_ext_data_config,
205 (board_ext_data_size << 16) | 1);
206 if (ret) {
207 ath10k_err("could not write board ext data bit (%d)\n", ret);
208 return ret;
209 }
210
211 return 0;
212}
213
214static int ath10k_download_board_data(struct ath10k *ar)
215{
216 u32 board_data_size = QCA988X_BOARD_DATA_SZ;
217 u32 address;
218 int ret;
219
220 ret = ath10k_push_board_ext_data(ar);
221 if (ret) {
222 ath10k_err("could not push board ext data (%d)\n", ret);
223 goto exit;
224 }
225
226 ret = ath10k_bmi_read32(ar, hi_board_data, &address);
227 if (ret) {
228 ath10k_err("could not read board data addr (%d)\n", ret);
229 goto exit;
230 }
231
232 ret = ath10k_bmi_write_memory(ar, address, ar->board_data,
233 min_t(u32, board_data_size,
234 ar->board_len));
235 if (ret) {
236 ath10k_err("could not write board data (%d)\n", ret);
237 goto exit;
238 }
239
240 ret = ath10k_bmi_write32(ar, hi_board_data_initialized, 1);
241 if (ret) {
242 ath10k_err("could not write board data bit (%d)\n", ret);
243 goto exit;
244 }
245
246exit:
247 return ret;
248}
249
250static int ath10k_download_and_run_otp(struct ath10k *ar)
251{
252 u32 address = ar->hw_params.patch_load_addr;
253 u32 exec_param;
254 int ret;
255
256 /* OTP is optional */
257
258 if (!ar->otp_data || !ar->otp_len)
259 return 0;
260
261 ret = ath10k_bmi_fast_download(ar, address, ar->otp_data, ar->otp_len);
262 if (ret) {
263 ath10k_err("could not write otp (%d)\n", ret);
264 goto exit;
265 }
266
267 exec_param = 0;
268 ret = ath10k_bmi_execute(ar, address, &exec_param);
269 if (ret) {
270 ath10k_err("could not execute otp (%d)\n", ret);
271 goto exit;
272 }
273
274exit:
275 return ret;
276}
277
278static int ath10k_download_fw(struct ath10k *ar)
279{
280 u32 address;
281 int ret;
282
283 address = ar->hw_params.patch_load_addr;
284
285 ret = ath10k_bmi_fast_download(ar, address, ar->firmware_data,
286 ar->firmware_len);
287 if (ret) {
288 ath10k_err("could not write fw (%d)\n", ret);
289 goto exit;
290 }
291
292exit:
293 return ret;
294}
295
296static void ath10k_core_free_firmware_files(struct ath10k *ar)
297{
298 if (ar->board && !IS_ERR(ar->board))
299 release_firmware(ar->board);
300
301 if (ar->otp && !IS_ERR(ar->otp))
302 release_firmware(ar->otp);
303
304 if (ar->firmware && !IS_ERR(ar->firmware))
305 release_firmware(ar->firmware);
306
307 ar->board = NULL;
308 ar->board_data = NULL;
309 ar->board_len = 0;
310
311 ar->otp = NULL;
312 ar->otp_data = NULL;
313 ar->otp_len = 0;
314
315 ar->firmware = NULL;
316 ar->firmware_data = NULL;
317 ar->firmware_len = 0;
318}
319
320static int ath10k_core_fetch_firmware_api_1(struct ath10k *ar)
321{
322 int ret = 0;
323
324 if (ar->hw_params.fw.fw == NULL) {
325 ath10k_err("firmware file not defined\n");
326 return -EINVAL;
327 }
328
329 if (ar->hw_params.fw.board == NULL) {
330 ath10k_err("board data file not defined");
331 return -EINVAL;
332 }
333
334 ar->board = ath10k_fetch_fw_file(ar,
335 ar->hw_params.fw.dir,
336 ar->hw_params.fw.board);
337 if (IS_ERR(ar->board)) {
338 ret = PTR_ERR(ar->board);
339 ath10k_err("could not fetch board data (%d)\n", ret);
340 goto err;
341 }
342
343 ar->board_data = ar->board->data;
344 ar->board_len = ar->board->size;
345
346 ar->firmware = ath10k_fetch_fw_file(ar,
347 ar->hw_params.fw.dir,
348 ar->hw_params.fw.fw);
349 if (IS_ERR(ar->firmware)) {
350 ret = PTR_ERR(ar->firmware);
351 ath10k_err("could not fetch firmware (%d)\n", ret);
352 goto err;
353 }
354
355 ar->firmware_data = ar->firmware->data;
356 ar->firmware_len = ar->firmware->size;
357
358 /* OTP may be undefined. If so, don't fetch it at all */
359 if (ar->hw_params.fw.otp == NULL)
360 return 0;
361
362 ar->otp = ath10k_fetch_fw_file(ar,
363 ar->hw_params.fw.dir,
364 ar->hw_params.fw.otp);
365 if (IS_ERR(ar->otp)) {
366 ret = PTR_ERR(ar->otp);
367 ath10k_err("could not fetch otp (%d)\n", ret);
368 goto err;
369 }
370
371 ar->otp_data = ar->otp->data;
372 ar->otp_len = ar->otp->size;
373
374 return 0;
375
376err:
377 ath10k_core_free_firmware_files(ar);
378 return ret;
379}
380
381static int ath10k_core_fetch_firmware_api_n(struct ath10k *ar, const char *name)
382{
383 size_t magic_len, len, ie_len;
384 int ie_id, i, index, bit, ret;
385 struct ath10k_fw_ie *hdr;
386 const u8 *data;
387 __le32 *timestamp;
388
389 /* first fetch the firmware file (firmware-*.bin) */
390 ar->firmware = ath10k_fetch_fw_file(ar, ar->hw_params.fw.dir, name);
391 if (IS_ERR(ar->firmware)) {
392 ath10k_err("Could not fetch firmware file '%s': %ld\n",
393 name, PTR_ERR(ar->firmware));
394 return PTR_ERR(ar->firmware);
395 }
396
397 data = ar->firmware->data;
398 len = ar->firmware->size;
399
400 /* magic also includes the null byte, check that as well */
401 magic_len = strlen(ATH10K_FIRMWARE_MAGIC) + 1;
402
403 if (len < magic_len) {
404 ath10k_err("firmware image too small to contain magic: %zu\n",
405 len);
406 ret = -EINVAL;
407 goto err;
408 }
409
410 if (memcmp(data, ATH10K_FIRMWARE_MAGIC, magic_len) != 0) {
411 ath10k_err("Invalid firmware magic\n");
412 ret = -EINVAL;
413 goto err;
414 }
415
416 /* jump over the padding */
417 magic_len = ALIGN(magic_len, 4);
418
419 len -= magic_len;
420 data += magic_len;
421
422 /* loop elements */
423 while (len > sizeof(struct ath10k_fw_ie)) {
424 hdr = (struct ath10k_fw_ie *)data;
425
426 ie_id = le32_to_cpu(hdr->id);
427 ie_len = le32_to_cpu(hdr->len);
428
429 len -= sizeof(*hdr);
430 data += sizeof(*hdr);
431
432 if (len < ie_len) {
433 ath10k_err("Invalid length for FW IE %d (%zu < %zu)\n",
434 ie_id, len, ie_len);
435 ret = -EINVAL;
436 goto err;
437 }
438
439 switch (ie_id) {
440 case ATH10K_FW_IE_FW_VERSION:
441 if (ie_len > sizeof(ar->hw->wiphy->fw_version) - 1)
442 break;
443
444 memcpy(ar->hw->wiphy->fw_version, data, ie_len);
445 ar->hw->wiphy->fw_version[ie_len] = '\0';
446
447 ath10k_dbg(ATH10K_DBG_BOOT,
448 "found fw version %s\n",
449 ar->hw->wiphy->fw_version);
450 break;
451 case ATH10K_FW_IE_TIMESTAMP:
452 if (ie_len != sizeof(u32))
453 break;
454
455 timestamp = (__le32 *)data;
456
457 ath10k_dbg(ATH10K_DBG_BOOT, "found fw timestamp %d\n",
458 le32_to_cpup(timestamp));
459 break;
460 case ATH10K_FW_IE_FEATURES:
461 ath10k_dbg(ATH10K_DBG_BOOT,
462 "found firmware features ie (%zd B)\n",
463 ie_len);
464
465 for (i = 0; i < ATH10K_FW_FEATURE_COUNT; i++) {
466 index = i / 8;
467 bit = i % 8;
468
469 if (index == ie_len)
470 break;
471
472 if (data[index] & (1 << bit)) {
473 ath10k_dbg(ATH10K_DBG_BOOT,
474 "Enabling feature bit: %i\n",
475 i);
476 __set_bit(i, ar->fw_features);
477 }
478 }
479
480 ath10k_dbg_dump(ATH10K_DBG_BOOT, "features", "",
481 ar->fw_features,
482 sizeof(ar->fw_features));
483 break;
484 case ATH10K_FW_IE_FW_IMAGE:
485 ath10k_dbg(ATH10K_DBG_BOOT,
486 "found fw image ie (%zd B)\n",
487 ie_len);
488
489 ar->firmware_data = data;
490 ar->firmware_len = ie_len;
491
492 break;
493 case ATH10K_FW_IE_OTP_IMAGE:
494 ath10k_dbg(ATH10K_DBG_BOOT,
495 "found otp image ie (%zd B)\n",
496 ie_len);
497
498 ar->otp_data = data;
499 ar->otp_len = ie_len;
500
501 break;
502 default:
503 ath10k_warn("Unknown FW IE: %u\n",
504 le32_to_cpu(hdr->id));
505 break;
506 }
507
508 /* jump over the padding */
509 ie_len = ALIGN(ie_len, 4);
510
511 len -= ie_len;
512 data += ie_len;
513 }
514
515 if (!ar->firmware_data || !ar->firmware_len) {
516 ath10k_warn("No ATH10K_FW_IE_FW_IMAGE found from %s, skipping\n",
517 name);
518 ret = -ENOMEDIUM;
519 goto err;
520 }
521
522 /* now fetch the board file */
523 if (ar->hw_params.fw.board == NULL) {
524 ath10k_err("board data file not defined");
525 ret = -EINVAL;
526 goto err;
527 }
528
529 ar->board = ath10k_fetch_fw_file(ar,
530 ar->hw_params.fw.dir,
531 ar->hw_params.fw.board);
532 if (IS_ERR(ar->board)) {
533 ret = PTR_ERR(ar->board);
534 ath10k_err("could not fetch board data (%d)\n", ret);
535 goto err;
536 }
537
538 ar->board_data = ar->board->data;
539 ar->board_len = ar->board->size;
540
541 return 0;
542
543err:
544 ath10k_core_free_firmware_files(ar);
545 return ret;
546}
547
548static int ath10k_core_fetch_firmware_files(struct ath10k *ar)
549{
550 int ret;
551
552 ret = ath10k_core_fetch_firmware_api_n(ar, ATH10K_FW_API2_FILE);
553 if (ret == 0) {
554 ar->fw_api = 2;
555 goto out;
556 }
557
558 ret = ath10k_core_fetch_firmware_api_1(ar);
559 if (ret)
560 return ret;
561
562 ar->fw_api = 1;
563
564out:
565 ath10k_dbg(ATH10K_DBG_BOOT, "using fw api %d\n", ar->fw_api);
566
567 return 0;
568}
569
570static int ath10k_init_download_firmware(struct ath10k *ar)
571{
572 int ret;
573
574 ret = ath10k_download_board_data(ar);
575 if (ret)
576 return ret;
577
578 ret = ath10k_download_and_run_otp(ar);
579 if (ret)
580 return ret;
581
582 ret = ath10k_download_fw(ar);
583 if (ret)
584 return ret;
585
586 return ret;
587}
588
589static int ath10k_init_uart(struct ath10k *ar)
590{
591 int ret;
592
593 /*
594 * Explicitly setting UART prints to zero as target turns it on
595 * based on scratch registers.
596 */
597 ret = ath10k_bmi_write32(ar, hi_serial_enable, 0);
598 if (ret) {
599 ath10k_warn("could not disable UART prints (%d)\n", ret);
600 return ret;
601 }
602
603 if (!uart_print)
604 return 0;
605
606 ret = ath10k_bmi_write32(ar, hi_dbg_uart_txpin, 7);
607 if (ret) {
608 ath10k_warn("could not enable UART prints (%d)\n", ret);
609 return ret;
610 }
611
612 ret = ath10k_bmi_write32(ar, hi_serial_enable, 1);
613 if (ret) {
614 ath10k_warn("could not enable UART prints (%d)\n", ret);
615 return ret;
616 }
617
618 /* Set the UART baud rate to 19200. */
619 ret = ath10k_bmi_write32(ar, hi_desired_baud_rate, 19200);
620 if (ret) {
621 ath10k_warn("could not set the baud rate (%d)\n", ret);
622 return ret;
623 }
624
625 ath10k_info("UART prints enabled\n");
626 return 0;
627}
628
629static int ath10k_init_hw_params(struct ath10k *ar)
630{
631 const struct ath10k_hw_params *uninitialized_var(hw_params);
632 int i;
633
634 for (i = 0; i < ARRAY_SIZE(ath10k_hw_params_list); i++) {
635 hw_params = &ath10k_hw_params_list[i];
636
637 if (hw_params->id == ar->target_version)
638 break;
639 }
640
641 if (i == ARRAY_SIZE(ath10k_hw_params_list)) {
642 ath10k_err("Unsupported hardware version: 0x%x\n",
643 ar->target_version);
644 return -EINVAL;
645 }
646
647 ar->hw_params = *hw_params;
648
649 ath10k_dbg(ATH10K_DBG_BOOT, "Hardware name %s version 0x%x\n",
650 ar->hw_params.name, ar->target_version);
651
652 return 0;
653}
654
655static void ath10k_core_restart(struct work_struct *work)
656{
657 struct ath10k *ar = container_of(work, struct ath10k, restart_work);
658
659 mutex_lock(&ar->conf_mutex);
660
661 switch (ar->state) {
662 case ATH10K_STATE_ON:
663 ath10k_halt(ar);
664 ar->state = ATH10K_STATE_RESTARTING;
665 ieee80211_restart_hw(ar->hw);
666 break;
667 case ATH10K_STATE_OFF:
668 /* this can happen if driver is being unloaded
669 * or if the crash happens during FW probing */
670 ath10k_warn("cannot restart a device that hasn't been started\n");
671 break;
672 case ATH10K_STATE_RESTARTING:
673 case ATH10K_STATE_RESTARTED:
674 ar->state = ATH10K_STATE_WEDGED;
675 /* fall through */
676 case ATH10K_STATE_WEDGED:
677 ath10k_warn("device is wedged, will not restart\n");
678 break;
679 }
680
681 mutex_unlock(&ar->conf_mutex);
682}
683
684struct ath10k *ath10k_core_create(void *hif_priv, struct device *dev,
685 const struct ath10k_hif_ops *hif_ops)
686{
687 struct ath10k *ar;
688
689 ar = ath10k_mac_create();
690 if (!ar)
691 return NULL;
692
693 ar->ath_common.priv = ar;
694 ar->ath_common.hw = ar->hw;
695
696 ar->p2p = !!ath10k_p2p;
697 ar->dev = dev;
698
699 ar->hif.priv = hif_priv;
700 ar->hif.ops = hif_ops;
701
702 init_completion(&ar->scan.started);
703 init_completion(&ar->scan.completed);
704 init_completion(&ar->scan.on_channel);
705 init_completion(&ar->target_suspend);
706
707 init_completion(&ar->install_key_done);
708 init_completion(&ar->vdev_setup_done);
709
710 setup_timer(&ar->scan.timeout, ath10k_reset_scan, (unsigned long)ar);
711
712 ar->workqueue = create_singlethread_workqueue("ath10k_wq");
713 if (!ar->workqueue)
714 goto err_wq;
715
716 mutex_init(&ar->conf_mutex);
717 spin_lock_init(&ar->data_lock);
718
719 INIT_LIST_HEAD(&ar->peers);
720 init_waitqueue_head(&ar->peer_mapping_wq);
721
722 init_completion(&ar->offchan_tx_completed);
723 INIT_WORK(&ar->offchan_tx_work, ath10k_offchan_tx_work);
724 skb_queue_head_init(&ar->offchan_tx_queue);
725
726 INIT_WORK(&ar->wmi_mgmt_tx_work, ath10k_mgmt_over_wmi_tx_work);
727 skb_queue_head_init(&ar->wmi_mgmt_tx_queue);
728
729 INIT_WORK(&ar->restart_work, ath10k_core_restart);
730
731 return ar;
732
733err_wq:
734 ath10k_mac_destroy(ar);
735 return NULL;
736}
737EXPORT_SYMBOL(ath10k_core_create);
738
739void ath10k_core_destroy(struct ath10k *ar)
740{
741 flush_workqueue(ar->workqueue);
742 destroy_workqueue(ar->workqueue);
743
744 ath10k_mac_destroy(ar);
745}
746EXPORT_SYMBOL(ath10k_core_destroy);
747
748int ath10k_core_start(struct ath10k *ar)
749{
750 int status;
751
752 lockdep_assert_held(&ar->conf_mutex);
753
754 ath10k_bmi_start(ar);
755
756 if (ath10k_init_configure_target(ar)) {
757 status = -EINVAL;
758 goto err;
759 }
760
761 status = ath10k_init_download_firmware(ar);
762 if (status)
763 goto err;
764
765 status = ath10k_init_uart(ar);
766 if (status)
767 goto err;
768
769 ar->htc.htc_ops.target_send_suspend_complete =
770 ath10k_send_suspend_complete;
771
772 status = ath10k_htc_init(ar);
773 if (status) {
774 ath10k_err("could not init HTC (%d)\n", status);
775 goto err;
776 }
777
778 status = ath10k_bmi_done(ar);
779 if (status)
780 goto err;
781
782 status = ath10k_wmi_attach(ar);
783 if (status) {
784 ath10k_err("WMI attach failed: %d\n", status);
785 goto err;
786 }
787
788 status = ath10k_hif_start(ar);
789 if (status) {
790 ath10k_err("could not start HIF: %d\n", status);
791 goto err_wmi_detach;
792 }
793
794 status = ath10k_htc_wait_target(&ar->htc);
795 if (status) {
796 ath10k_err("failed to connect to HTC: %d\n", status);
797 goto err_hif_stop;
798 }
799
800 status = ath10k_htt_attach(ar);
801 if (status) {
802 ath10k_err("could not attach htt (%d)\n", status);
803 goto err_hif_stop;
804 }
805
806 status = ath10k_init_connect_htc(ar);
807 if (status)
808 goto err_htt_detach;
809
810 ath10k_dbg(ATH10K_DBG_BOOT, "firmware %s booted\n",
811 ar->hw->wiphy->fw_version);
812
813 status = ath10k_wmi_cmd_init(ar);
814 if (status) {
815 ath10k_err("could not send WMI init command (%d)\n", status);
816 goto err_disconnect_htc;
817 }
818
819 status = ath10k_wmi_wait_for_unified_ready(ar);
820 if (status <= 0) {
821 ath10k_err("wmi unified ready event not received\n");
822 status = -ETIMEDOUT;
823 goto err_disconnect_htc;
824 }
825
826 status = ath10k_htt_attach_target(&ar->htt);
827 if (status)
828 goto err_disconnect_htc;
829
830 status = ath10k_debug_start(ar);
831 if (status)
832 goto err_disconnect_htc;
833
834 ar->free_vdev_map = (1 << TARGET_NUM_VDEVS) - 1;
835 INIT_LIST_HEAD(&ar->arvifs);
836
837 if (!test_bit(ATH10K_FLAG_FIRST_BOOT_DONE, &ar->dev_flags))
838 ath10k_info("%s (0x%x) fw %s api %d htt %d.%d\n",
839 ar->hw_params.name, ar->target_version,
840 ar->hw->wiphy->fw_version, ar->fw_api,
841 ar->htt.target_version_major,
842 ar->htt.target_version_minor);
843
844 __set_bit(ATH10K_FLAG_FIRST_BOOT_DONE, &ar->dev_flags);
845
846 return 0;
847
848err_disconnect_htc:
849 ath10k_htc_stop(&ar->htc);
850err_htt_detach:
851 ath10k_htt_detach(&ar->htt);
852err_hif_stop:
853 ath10k_hif_stop(ar);
854err_wmi_detach:
855 ath10k_wmi_detach(ar);
856err:
857 return status;
858}
859EXPORT_SYMBOL(ath10k_core_start);
860
861int ath10k_wait_for_suspend(struct ath10k *ar, u32 suspend_opt)
862{
863 int ret;
864
865 reinit_completion(&ar->target_suspend);
866
867 ret = ath10k_wmi_pdev_suspend_target(ar, suspend_opt);
868 if (ret) {
869 ath10k_warn("could not suspend target (%d)\n", ret);
870 return ret;
871 }
872
873 ret = wait_for_completion_timeout(&ar->target_suspend, 1 * HZ);
874
875 if (ret == 0) {
876 ath10k_warn("suspend timed out - target pause event never came\n");
877 return -ETIMEDOUT;
878 }
879
880 return 0;
881}
882
883void ath10k_core_stop(struct ath10k *ar)
884{
885 lockdep_assert_held(&ar->conf_mutex);
886
887 /* try to suspend target */
888 ath10k_wait_for_suspend(ar, WMI_PDEV_SUSPEND_AND_DISABLE_INTR);
889 ath10k_debug_stop(ar);
890 ath10k_htc_stop(&ar->htc);
891 ath10k_htt_detach(&ar->htt);
892 ath10k_wmi_detach(ar);
893}
894EXPORT_SYMBOL(ath10k_core_stop);
895
896/* mac80211 manages fw/hw initialization through start/stop hooks. However in
897 * order to know what hw capabilities should be advertised to mac80211 it is
898 * necessary to load the firmware (and tear it down immediately since start
899 * hook will try to init it again) before registering */
900static int ath10k_core_probe_fw(struct ath10k *ar)
901{
902 struct bmi_target_info target_info;
903 int ret = 0;
904
905 ret = ath10k_hif_power_up(ar);
906 if (ret) {
907 ath10k_err("could not start pci hif (%d)\n", ret);
908 return ret;
909 }
910
911 memset(&target_info, 0, sizeof(target_info));
912 ret = ath10k_bmi_get_target_info(ar, &target_info);
913 if (ret) {
914 ath10k_err("could not get target info (%d)\n", ret);
915 ath10k_hif_power_down(ar);
916 return ret;
917 }
918
919 ar->target_version = target_info.version;
920 ar->hw->wiphy->hw_version = target_info.version;
921
922 ret = ath10k_init_hw_params(ar);
923 if (ret) {
924 ath10k_err("could not get hw params (%d)\n", ret);
925 ath10k_hif_power_down(ar);
926 return ret;
927 }
928
929 ret = ath10k_core_fetch_firmware_files(ar);
930 if (ret) {
931 ath10k_err("could not fetch firmware files (%d)\n", ret);
932 ath10k_hif_power_down(ar);
933 return ret;
934 }
935
936 mutex_lock(&ar->conf_mutex);
937
938 ret = ath10k_core_start(ar);
939 if (ret) {
940 ath10k_err("could not init core (%d)\n", ret);
941 ath10k_core_free_firmware_files(ar);
942 ath10k_hif_power_down(ar);
943 mutex_unlock(&ar->conf_mutex);
944 return ret;
945 }
946
947 ath10k_core_stop(ar);
948
949 mutex_unlock(&ar->conf_mutex);
950
951 ath10k_hif_power_down(ar);
952 return 0;
953}
954
955static int ath10k_core_check_chip_id(struct ath10k *ar)
956{
957 u32 hw_revision = MS(ar->chip_id, SOC_CHIP_ID_REV);
958
959 ath10k_dbg(ATH10K_DBG_BOOT, "boot chip_id 0x%08x hw_revision 0x%x\n",
960 ar->chip_id, hw_revision);
961
962 /* Check that we are not using hw1.0 (some of them have same pci id
963 * as hw2.0) before doing anything else as ath10k crashes horribly
964 * due to missing hw1.0 workarounds. */
965 switch (hw_revision) {
966 case QCA988X_HW_1_0_CHIP_ID_REV:
967 ath10k_err("ERROR: qca988x hw1.0 is not supported\n");
968 return -EOPNOTSUPP;
969
970 case QCA988X_HW_2_0_CHIP_ID_REV:
971 /* known hardware revision, continue normally */
972 return 0;
973
974 default:
975 ath10k_warn("Warning: hardware revision unknown (0x%x), expect problems\n",
976 ar->chip_id);
977 return 0;
978 }
979
980 return 0;
981}
982
983int ath10k_core_register(struct ath10k *ar, u32 chip_id)
984{
985 int status;
986
987 ar->chip_id = chip_id;
988
989 status = ath10k_core_check_chip_id(ar);
990 if (status) {
991 ath10k_err("Unsupported chip id 0x%08x\n", ar->chip_id);
992 return status;
993 }
994
995 status = ath10k_core_probe_fw(ar);
996 if (status) {
997 ath10k_err("could not probe fw (%d)\n", status);
998 return status;
999 }
1000
1001 status = ath10k_mac_register(ar);
1002 if (status) {
1003 ath10k_err("could not register to mac80211 (%d)\n", status);
1004 goto err_release_fw;
1005 }
1006
1007 status = ath10k_debug_create(ar);
1008 if (status) {
1009 ath10k_err("unable to initialize debugfs\n");
1010 goto err_unregister_mac;
1011 }
1012
1013 return 0;
1014
1015err_unregister_mac:
1016 ath10k_mac_unregister(ar);
1017err_release_fw:
1018 ath10k_core_free_firmware_files(ar);
1019 return status;
1020}
1021EXPORT_SYMBOL(ath10k_core_register);
1022
1023void ath10k_core_unregister(struct ath10k *ar)
1024{
1025 /* We must unregister from mac80211 before we stop HTC and HIF.
1026 * Otherwise we will fail to submit commands to FW and mac80211 will be
1027 * unhappy about callback failures. */
1028 ath10k_mac_unregister(ar);
1029
1030 ath10k_core_free_firmware_files(ar);
1031
1032 ath10k_debug_destroy(ar);
1033}
1034EXPORT_SYMBOL(ath10k_core_unregister);
1035
1036MODULE_AUTHOR("Qualcomm Atheros");
1037MODULE_DESCRIPTION("Core module for QCA988X PCIe devices.");
1038MODULE_LICENSE("Dual BSD/GPL");