1 // SPDX-License-Identifier: BSD-3-Clause-Clear 2 /* 3 * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved. 4 */ 5 6 #include <linux/module.h> 7 #include <linux/slab.h> 8 #include <linux/remoteproc.h> 9 #include <linux/firmware.h> 10 #include "ahb.h" 11 #include "core.h" 12 #include "dp_tx.h" 13 #include "dp_rx.h" 14 #include "debug.h" 15 16 unsigned int ath11k_debug_mask; 17 module_param_named(debug_mask, ath11k_debug_mask, uint, 0644); 18 MODULE_PARM_DESC(debug_mask, "Debugging mask"); 19 20 static const struct ath11k_hw_params ath11k_hw_params = { 21 .name = "ipq8074", 22 .fw = { 23 .dir = IPQ8074_FW_DIR, 24 .board_size = IPQ8074_MAX_BOARD_DATA_SZ, 25 .cal_size = IPQ8074_MAX_CAL_DATA_SZ, 26 }, 27 }; 28 29 /* Map from pdev index to hw mac index */ 30 u8 ath11k_core_get_hw_mac_id(struct ath11k_base *ab, int pdev_idx) 31 { 32 switch (pdev_idx) { 33 case 0: 34 return 0; 35 case 1: 36 return 2; 37 case 2: 38 return 1; 39 default: 40 ath11k_warn(ab, "Invalid pdev idx %d\n", pdev_idx); 41 return ATH11K_INVALID_HW_MAC_ID; 42 } 43 } 44 45 static int ath11k_core_create_board_name(struct ath11k_base *ab, char *name, 46 size_t name_len) 47 { 48 /* Note: bus is fixed to ahb. When other bus type supported, 49 * make it to dynamic. 50 */ 51 scnprintf(name, name_len, 52 "bus=ahb,qmi-chip-id=%d,qmi-board-id=%d", 53 ab->qmi.target.chip_id, 54 ab->qmi.target.board_id); 55 56 ath11k_dbg(ab, ATH11K_DBG_BOOT, "boot using board name '%s'\n", name); 57 58 return 0; 59 } 60 61 static const struct firmware *ath11k_fetch_fw_file(struct ath11k_base *ab, 62 const char *dir, 63 const char *file) 64 { 65 char filename[100]; 66 const struct firmware *fw; 67 int ret; 68 69 if (file == NULL) 70 return ERR_PTR(-ENOENT); 71 72 if (dir == NULL) 73 dir = "."; 74 75 snprintf(filename, sizeof(filename), "%s/%s", dir, file); 76 ret = firmware_request_nowarn(&fw, filename, ab->dev); 77 ath11k_dbg(ab, ATH11K_DBG_BOOT, "boot fw request '%s': %d\n", 78 filename, ret); 79 80 if (ret) 81 return ERR_PTR(ret); 82 ath11k_warn(ab, "Downloading BDF: %s, size: %zu\n", 83 filename, fw->size); 84 85 return fw; 86 } 87 88 void ath11k_core_free_bdf(struct ath11k_base *ab, struct ath11k_board_data *bd) 89 { 90 if (!IS_ERR(bd->fw)) 91 release_firmware(bd->fw); 92 93 memset(bd, 0, sizeof(*bd)); 94 } 95 96 static int ath11k_core_parse_bd_ie_board(struct ath11k_base *ab, 97 struct ath11k_board_data *bd, 98 const void *buf, size_t buf_len, 99 const char *boardname, 100 int bd_ie_type) 101 { 102 const struct ath11k_fw_ie *hdr; 103 bool name_match_found; 104 int ret, board_ie_id; 105 size_t board_ie_len; 106 const void *board_ie_data; 107 108 name_match_found = false; 109 110 /* go through ATH11K_BD_IE_BOARD_ elements */ 111 while (buf_len > sizeof(struct ath11k_fw_ie)) { 112 hdr = buf; 113 board_ie_id = le32_to_cpu(hdr->id); 114 board_ie_len = le32_to_cpu(hdr->len); 115 board_ie_data = hdr->data; 116 117 buf_len -= sizeof(*hdr); 118 buf += sizeof(*hdr); 119 120 if (buf_len < ALIGN(board_ie_len, 4)) { 121 ath11k_err(ab, "invalid ATH11K_BD_IE_BOARD length: %zu < %zu\n", 122 buf_len, ALIGN(board_ie_len, 4)); 123 ret = -EINVAL; 124 goto out; 125 } 126 127 switch (board_ie_id) { 128 case ATH11K_BD_IE_BOARD_NAME: 129 ath11k_dbg_dump(ab, ATH11K_DBG_BOOT, "board name", "", 130 board_ie_data, board_ie_len); 131 132 if (board_ie_len != strlen(boardname)) 133 break; 134 135 ret = memcmp(board_ie_data, boardname, strlen(boardname)); 136 if (ret) 137 break; 138 139 name_match_found = true; 140 ath11k_dbg(ab, ATH11K_DBG_BOOT, 141 "boot found match for name '%s'", 142 boardname); 143 break; 144 case ATH11K_BD_IE_BOARD_DATA: 145 if (!name_match_found) 146 /* no match found */ 147 break; 148 149 ath11k_dbg(ab, ATH11K_DBG_BOOT, 150 "boot found board data for '%s'", boardname); 151 152 bd->data = board_ie_data; 153 bd->len = board_ie_len; 154 155 ret = 0; 156 goto out; 157 default: 158 ath11k_warn(ab, "unknown ATH11K_BD_IE_BOARD found: %d\n", 159 board_ie_id); 160 break; 161 } 162 163 /* jump over the padding */ 164 board_ie_len = ALIGN(board_ie_len, 4); 165 166 buf_len -= board_ie_len; 167 buf += board_ie_len; 168 } 169 170 /* no match found */ 171 ret = -ENOENT; 172 173 out: 174 return ret; 175 } 176 177 static int ath11k_core_fetch_board_data_api_n(struct ath11k_base *ab, 178 struct ath11k_board_data *bd, 179 const char *boardname) 180 { 181 size_t len, magic_len; 182 const u8 *data; 183 char *filename = ATH11K_BOARD_API2_FILE; 184 size_t ie_len; 185 struct ath11k_fw_ie *hdr; 186 int ret, ie_id; 187 188 if (!bd->fw) 189 bd->fw = ath11k_fetch_fw_file(ab, 190 ab->hw_params.fw.dir, 191 filename); 192 if (IS_ERR(bd->fw)) 193 return PTR_ERR(bd->fw); 194 195 data = bd->fw->data; 196 len = bd->fw->size; 197 198 /* magic has extra null byte padded */ 199 magic_len = strlen(ATH11K_BOARD_MAGIC) + 1; 200 if (len < magic_len) { 201 ath11k_err(ab, "failed to find magic value in %s/%s, file too short: %zu\n", 202 ab->hw_params.fw.dir, filename, len); 203 ret = -EINVAL; 204 goto err; 205 } 206 207 if (memcmp(data, ATH11K_BOARD_MAGIC, magic_len)) { 208 ath11k_err(ab, "found invalid board magic\n"); 209 ret = -EINVAL; 210 goto err; 211 } 212 213 /* magic is padded to 4 bytes */ 214 magic_len = ALIGN(magic_len, 4); 215 if (len < magic_len) { 216 ath11k_err(ab, "failed: %s/%s too small to contain board data, len: %zu\n", 217 ab->hw_params.fw.dir, filename, len); 218 ret = -EINVAL; 219 goto err; 220 } 221 222 data += magic_len; 223 len -= magic_len; 224 225 while (len > sizeof(struct ath11k_fw_ie)) { 226 hdr = (struct ath11k_fw_ie *)data; 227 ie_id = le32_to_cpu(hdr->id); 228 ie_len = le32_to_cpu(hdr->len); 229 230 len -= sizeof(*hdr); 231 data = hdr->data; 232 233 if (len < ALIGN(ie_len, 4)) { 234 ath11k_err(ab, "invalid length for board ie_id %d ie_len %zu len %zu\n", 235 ie_id, ie_len, len); 236 return -EINVAL; 237 } 238 239 switch (ie_id) { 240 case ATH11K_BD_IE_BOARD: 241 ret = ath11k_core_parse_bd_ie_board(ab, bd, data, 242 ie_len, 243 boardname, 244 ATH11K_BD_IE_BOARD); 245 if (ret == -ENOENT) 246 /* no match found, continue */ 247 break; 248 else if (ret) 249 /* there was an error, bail out */ 250 goto err; 251 /* either found or error, so stop searching */ 252 goto out; 253 } 254 255 /* jump over the padding */ 256 ie_len = ALIGN(ie_len, 4); 257 258 len -= ie_len; 259 data += ie_len; 260 } 261 262 out: 263 if (!bd->data || !bd->len) { 264 ath11k_err(ab, 265 "failed to fetch board data for %s from %s/%s\n", 266 boardname, ab->hw_params.fw.dir, filename); 267 ret = -ENODATA; 268 goto err; 269 } 270 271 return 0; 272 273 err: 274 ath11k_core_free_bdf(ab, bd); 275 return ret; 276 } 277 278 static int ath11k_core_fetch_board_data_api_1(struct ath11k_base *ab, 279 struct ath11k_board_data *bd) 280 { 281 bd->fw = ath11k_fetch_fw_file(ab, 282 ab->hw_params.fw.dir, 283 ATH11K_DEFAULT_BOARD_FILE); 284 if (IS_ERR(bd->fw)) 285 return PTR_ERR(bd->fw); 286 287 bd->data = bd->fw->data; 288 bd->len = bd->fw->size; 289 290 return 0; 291 } 292 293 #define BOARD_NAME_SIZE 100 294 int ath11k_core_fetch_bdf(struct ath11k_base *ab, struct ath11k_board_data *bd) 295 { 296 char boardname[BOARD_NAME_SIZE]; 297 int ret; 298 299 ret = ath11k_core_create_board_name(ab, boardname, BOARD_NAME_SIZE); 300 if (ret) { 301 ath11k_err(ab, "failed to create board name: %d", ret); 302 return ret; 303 } 304 305 ab->bd_api = 2; 306 ret = ath11k_core_fetch_board_data_api_n(ab, bd, boardname); 307 if (!ret) 308 goto success; 309 310 ab->bd_api = 1; 311 ret = ath11k_core_fetch_board_data_api_1(ab, bd); 312 if (ret) { 313 ath11k_err(ab, "failed to fetch board-2.bin or board.bin from %s\n", 314 ab->hw_params.fw.dir); 315 return ret; 316 } 317 318 success: 319 ath11k_dbg(ab, ATH11K_DBG_BOOT, "using board api %d\n", ab->bd_api); 320 return 0; 321 } 322 323 static void ath11k_core_stop(struct ath11k_base *ab) 324 { 325 if (!test_bit(ATH11K_FLAG_CRASH_FLUSH, &ab->dev_flags)) 326 ath11k_qmi_firmware_stop(ab); 327 ath11k_ahb_stop(ab); 328 ath11k_wmi_detach(ab); 329 ath11k_dp_pdev_reo_cleanup(ab); 330 331 /* De-Init of components as needed */ 332 } 333 334 static int ath11k_core_soc_create(struct ath11k_base *ab) 335 { 336 int ret; 337 338 ret = ath11k_qmi_init_service(ab); 339 if (ret) { 340 ath11k_err(ab, "failed to initialize qmi :%d\n", ret); 341 return ret; 342 } 343 344 ret = ath11k_debug_soc_create(ab); 345 if (ret) { 346 ath11k_err(ab, "failed to create ath11k debugfs\n"); 347 goto err_qmi_deinit; 348 } 349 350 ret = ath11k_ahb_power_up(ab); 351 if (ret) { 352 ath11k_err(ab, "failed to power up :%d\n", ret); 353 goto err_debugfs_reg; 354 } 355 356 return 0; 357 358 err_debugfs_reg: 359 ath11k_debug_soc_destroy(ab); 360 err_qmi_deinit: 361 ath11k_qmi_deinit_service(ab); 362 return ret; 363 } 364 365 static void ath11k_core_soc_destroy(struct ath11k_base *ab) 366 { 367 ath11k_debug_soc_destroy(ab); 368 ath11k_dp_free(ab); 369 ath11k_reg_free(ab); 370 ath11k_qmi_deinit_service(ab); 371 } 372 373 static int ath11k_core_pdev_create(struct ath11k_base *ab) 374 { 375 int ret; 376 377 ret = ath11k_debug_pdev_create(ab); 378 if (ret) { 379 ath11k_err(ab, "failed to create core pdev debugfs: %d\n", ret); 380 return ret; 381 } 382 383 ret = ath11k_mac_register(ab); 384 if (ret) { 385 ath11k_err(ab, "failed register the radio with mac80211: %d\n", ret); 386 goto err_pdev_debug; 387 } 388 389 ret = ath11k_dp_pdev_alloc(ab); 390 if (ret) { 391 ath11k_err(ab, "failed to attach DP pdev: %d\n", ret); 392 goto err_mac_unregister; 393 } 394 395 return 0; 396 397 err_mac_unregister: 398 ath11k_mac_unregister(ab); 399 400 err_pdev_debug: 401 ath11k_debug_pdev_destroy(ab); 402 403 return ret; 404 } 405 406 static void ath11k_core_pdev_destroy(struct ath11k_base *ab) 407 { 408 ath11k_mac_unregister(ab); 409 ath11k_ahb_ext_irq_disable(ab); 410 ath11k_dp_pdev_free(ab); 411 ath11k_debug_pdev_destroy(ab); 412 } 413 414 static int ath11k_core_start(struct ath11k_base *ab, 415 enum ath11k_firmware_mode mode) 416 { 417 int ret; 418 419 ret = ath11k_qmi_firmware_start(ab, mode); 420 if (ret) { 421 ath11k_err(ab, "failed to attach wmi: %d\n", ret); 422 return ret; 423 } 424 425 ret = ath11k_wmi_attach(ab); 426 if (ret) { 427 ath11k_err(ab, "failed to attach wmi: %d\n", ret); 428 goto err_firmware_stop; 429 } 430 431 ret = ath11k_htc_init(ab); 432 if (ret) { 433 ath11k_err(ab, "failed to init htc: %d\n", ret); 434 goto err_wmi_detach; 435 } 436 437 ret = ath11k_ahb_start(ab); 438 if (ret) { 439 ath11k_err(ab, "failed to start HIF: %d\n", ret); 440 goto err_wmi_detach; 441 } 442 443 ret = ath11k_htc_wait_target(&ab->htc); 444 if (ret) { 445 ath11k_err(ab, "failed to connect to HTC: %d\n", ret); 446 goto err_hif_stop; 447 } 448 449 ret = ath11k_dp_htt_connect(&ab->dp); 450 if (ret) { 451 ath11k_err(ab, "failed to connect to HTT: %d\n", ret); 452 goto err_hif_stop; 453 } 454 455 ret = ath11k_wmi_connect(ab); 456 if (ret) { 457 ath11k_err(ab, "failed to connect wmi: %d\n", ret); 458 goto err_hif_stop; 459 } 460 461 ret = ath11k_htc_start(&ab->htc); 462 if (ret) { 463 ath11k_err(ab, "failed to start HTC: %d\n", ret); 464 goto err_hif_stop; 465 } 466 467 ret = ath11k_wmi_wait_for_service_ready(ab); 468 if (ret) { 469 ath11k_err(ab, "failed to receive wmi service ready event: %d\n", 470 ret); 471 goto err_hif_stop; 472 } 473 474 ret = ath11k_mac_allocate(ab); 475 if (ret) { 476 ath11k_err(ab, "failed to create new hw device with mac80211 :%d\n", 477 ret); 478 goto err_hif_stop; 479 } 480 481 ath11k_dp_pdev_pre_alloc(ab); 482 483 ret = ath11k_dp_pdev_reo_setup(ab); 484 if (ret) { 485 ath11k_err(ab, "failed to initialize reo destination rings: %d\n", ret); 486 goto err_mac_destroy; 487 } 488 489 ret = ath11k_wmi_cmd_init(ab); 490 if (ret) { 491 ath11k_err(ab, "failed to send wmi init cmd: %d\n", ret); 492 goto err_reo_cleanup; 493 } 494 495 ret = ath11k_wmi_wait_for_unified_ready(ab); 496 if (ret) { 497 ath11k_err(ab, "failed to receive wmi unified ready event: %d\n", 498 ret); 499 goto err_reo_cleanup; 500 } 501 502 ret = ath11k_dp_tx_htt_h2t_ver_req_msg(ab); 503 if (ret) { 504 ath11k_err(ab, "failed to send htt version request message: %d\n", 505 ret); 506 goto err_reo_cleanup; 507 } 508 509 return 0; 510 511 err_reo_cleanup: 512 ath11k_dp_pdev_reo_cleanup(ab); 513 err_mac_destroy: 514 ath11k_mac_destroy(ab); 515 err_hif_stop: 516 ath11k_ahb_stop(ab); 517 err_wmi_detach: 518 ath11k_wmi_detach(ab); 519 err_firmware_stop: 520 ath11k_qmi_firmware_stop(ab); 521 522 return ret; 523 } 524 525 int ath11k_core_qmi_firmware_ready(struct ath11k_base *ab) 526 { 527 int ret; 528 529 ret = ath11k_ce_init_pipes(ab); 530 if (ret) { 531 ath11k_err(ab, "failed to initialize CE: %d\n", ret); 532 return ret; 533 } 534 535 ret = ath11k_dp_alloc(ab); 536 if (ret) { 537 ath11k_err(ab, "failed to init DP: %d\n", ret); 538 return ret; 539 } 540 541 mutex_lock(&ab->core_lock); 542 ret = ath11k_core_start(ab, ATH11K_FIRMWARE_MODE_NORMAL); 543 if (ret) { 544 ath11k_err(ab, "failed to start core: %d\n", ret); 545 goto err_dp_free; 546 } 547 548 ret = ath11k_core_pdev_create(ab); 549 if (ret) { 550 ath11k_err(ab, "failed to create pdev core: %d\n", ret); 551 goto err_core_stop; 552 } 553 ath11k_ahb_ext_irq_enable(ab); 554 mutex_unlock(&ab->core_lock); 555 556 return 0; 557 558 err_core_stop: 559 ath11k_core_stop(ab); 560 ath11k_mac_destroy(ab); 561 err_dp_free: 562 ath11k_dp_free(ab); 563 mutex_unlock(&ab->core_lock); 564 return ret; 565 } 566 567 static int ath11k_core_reconfigure_on_crash(struct ath11k_base *ab) 568 { 569 int ret; 570 571 mutex_lock(&ab->core_lock); 572 ath11k_ahb_ext_irq_disable(ab); 573 ath11k_dp_pdev_free(ab); 574 ath11k_ahb_stop(ab); 575 ath11k_wmi_detach(ab); 576 ath11k_dp_pdev_reo_cleanup(ab); 577 mutex_unlock(&ab->core_lock); 578 579 ath11k_dp_free(ab); 580 ath11k_hal_srng_deinit(ab); 581 582 ab->free_vdev_map = (1LL << (ab->num_radios * TARGET_NUM_VDEVS)) - 1; 583 584 ret = ath11k_hal_srng_init(ab); 585 if (ret) 586 return ret; 587 588 clear_bit(ATH11K_FLAG_CRASH_FLUSH, &ab->dev_flags); 589 590 ret = ath11k_core_qmi_firmware_ready(ab); 591 if (ret) 592 goto err_hal_srng_deinit; 593 594 clear_bit(ATH11K_FLAG_RECOVERY, &ab->dev_flags); 595 596 return 0; 597 598 err_hal_srng_deinit: 599 ath11k_hal_srng_deinit(ab); 600 return ret; 601 } 602 603 void ath11k_core_halt(struct ath11k *ar) 604 { 605 struct ath11k_base *ab = ar->ab; 606 607 lockdep_assert_held(&ar->conf_mutex); 608 609 ar->num_created_vdevs = 0; 610 611 ath11k_mac_scan_finish(ar); 612 ath11k_mac_peer_cleanup_all(ar); 613 cancel_delayed_work_sync(&ar->scan.timeout); 614 cancel_work_sync(&ar->regd_update_work); 615 616 rcu_assign_pointer(ab->pdevs_active[ar->pdev_idx], NULL); 617 synchronize_rcu(); 618 INIT_LIST_HEAD(&ar->arvifs); 619 idr_init(&ar->txmgmt_idr); 620 } 621 622 static void ath11k_core_restart(struct work_struct *work) 623 { 624 struct ath11k_base *ab = container_of(work, struct ath11k_base, restart_work); 625 struct ath11k *ar; 626 struct ath11k_pdev *pdev; 627 int i, ret = 0; 628 629 spin_lock_bh(&ab->base_lock); 630 ab->stats.fw_crash_counter++; 631 spin_unlock_bh(&ab->base_lock); 632 633 for (i = 0; i < ab->num_radios; i++) { 634 pdev = &ab->pdevs[i]; 635 ar = pdev->ar; 636 if (!ar || ar->state == ATH11K_STATE_OFF) 637 continue; 638 639 ieee80211_stop_queues(ar->hw); 640 ath11k_mac_drain_tx(ar); 641 complete(&ar->scan.started); 642 complete(&ar->scan.completed); 643 complete(&ar->peer_assoc_done); 644 complete(&ar->install_key_done); 645 complete(&ar->vdev_setup_done); 646 complete(&ar->bss_survey_done); 647 648 wake_up(&ar->dp.tx_empty_waitq); 649 idr_for_each(&ar->txmgmt_idr, 650 ath11k_mac_tx_mgmt_pending_free, ar); 651 idr_destroy(&ar->txmgmt_idr); 652 } 653 654 wake_up(&ab->wmi_ab.tx_credits_wq); 655 wake_up(&ab->peer_mapping_wq); 656 657 ret = ath11k_core_reconfigure_on_crash(ab); 658 if (ret) { 659 ath11k_err(ab, "failed to reconfigure driver on crash recovery\n"); 660 return; 661 } 662 663 for (i = 0; i < ab->num_radios; i++) { 664 pdev = &ab->pdevs[i]; 665 ar = pdev->ar; 666 if (!ar || ar->state == ATH11K_STATE_OFF) 667 continue; 668 669 mutex_lock(&ar->conf_mutex); 670 671 switch (ar->state) { 672 case ATH11K_STATE_ON: 673 ar->state = ATH11K_STATE_RESTARTING; 674 ath11k_core_halt(ar); 675 ieee80211_restart_hw(ar->hw); 676 break; 677 case ATH11K_STATE_OFF: 678 ath11k_warn(ab, 679 "cannot restart radio %d that hasn't been started\n", 680 i); 681 break; 682 case ATH11K_STATE_RESTARTING: 683 break; 684 case ATH11K_STATE_RESTARTED: 685 ar->state = ATH11K_STATE_WEDGED; 686 /* fall through */ 687 case ATH11K_STATE_WEDGED: 688 ath11k_warn(ab, 689 "device is wedged, will not restart radio %d\n", i); 690 break; 691 } 692 mutex_unlock(&ar->conf_mutex); 693 } 694 complete(&ab->driver_recovery); 695 } 696 697 int ath11k_core_init(struct ath11k_base *ab) 698 { 699 struct device *dev = ab->dev; 700 struct rproc *prproc; 701 phandle rproc_phandle; 702 int ret; 703 704 if (of_property_read_u32(dev->of_node, "qcom,rproc", &rproc_phandle)) { 705 ath11k_err(ab, "failed to get q6_rproc handle\n"); 706 return -ENOENT; 707 } 708 709 prproc = rproc_get_by_phandle(rproc_phandle); 710 if (!prproc) { 711 ath11k_err(ab, "failed to get rproc\n"); 712 return -EINVAL; 713 } 714 ab->tgt_rproc = prproc; 715 ab->hw_params = ath11k_hw_params; 716 717 ret = ath11k_core_soc_create(ab); 718 if (ret) { 719 ath11k_err(ab, "failed to create soc core: %d\n", ret); 720 return ret; 721 } 722 723 return 0; 724 } 725 726 void ath11k_core_deinit(struct ath11k_base *ab) 727 { 728 mutex_lock(&ab->core_lock); 729 730 ath11k_core_pdev_destroy(ab); 731 ath11k_core_stop(ab); 732 733 mutex_unlock(&ab->core_lock); 734 735 ath11k_ahb_power_down(ab); 736 ath11k_mac_destroy(ab); 737 ath11k_core_soc_destroy(ab); 738 } 739 740 void ath11k_core_free(struct ath11k_base *ab) 741 { 742 kfree(ab); 743 } 744 745 struct ath11k_base *ath11k_core_alloc(struct device *dev) 746 { 747 struct ath11k_base *ab; 748 749 ab = kzalloc(sizeof(*ab), GFP_KERNEL); 750 if (!ab) 751 return NULL; 752 753 init_completion(&ab->driver_recovery); 754 755 ab->workqueue = create_singlethread_workqueue("ath11k_wq"); 756 if (!ab->workqueue) 757 goto err_sc_free; 758 759 mutex_init(&ab->core_lock); 760 spin_lock_init(&ab->base_lock); 761 762 INIT_LIST_HEAD(&ab->peers); 763 init_waitqueue_head(&ab->peer_mapping_wq); 764 init_waitqueue_head(&ab->wmi_ab.tx_credits_wq); 765 INIT_WORK(&ab->restart_work, ath11k_core_restart); 766 timer_setup(&ab->rx_replenish_retry, ath11k_ce_rx_replenish_retry, 0); 767 ab->dev = dev; 768 769 return ab; 770 771 err_sc_free: 772 kfree(ab); 773 return NULL; 774 } 775 776 static int __init ath11k_init(void) 777 { 778 int ret; 779 780 ret = ath11k_ahb_init(); 781 if (ret) 782 printk(KERN_ERR "failed to register ath11k ahb driver: %d\n", 783 ret); 784 return ret; 785 } 786 module_init(ath11k_init); 787 788 static void __exit ath11k_exit(void) 789 { 790 ath11k_ahb_exit(); 791 } 792 module_exit(ath11k_exit); 793 794 MODULE_DESCRIPTION("Driver support for Qualcomm Technologies 802.11ax wireless chip"); 795 MODULE_LICENSE("Dual BSD/GPL"); 796