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 ret = ath11k_thermal_register(ab); 396 if (ret) { 397 ath11k_err(ab, "could not register thermal device: %d\n", 398 ret); 399 goto err_dp_pdev_free; 400 } 401 402 return 0; 403 404 err_dp_pdev_free: 405 ath11k_dp_pdev_free(ab); 406 err_mac_unregister: 407 ath11k_mac_unregister(ab); 408 err_pdev_debug: 409 ath11k_debug_pdev_destroy(ab); 410 411 return ret; 412 } 413 414 static void ath11k_core_pdev_destroy(struct ath11k_base *ab) 415 { 416 ath11k_thermal_unregister(ab); 417 ath11k_mac_unregister(ab); 418 ath11k_ahb_ext_irq_disable(ab); 419 ath11k_dp_pdev_free(ab); 420 ath11k_debug_pdev_destroy(ab); 421 } 422 423 static int ath11k_core_start(struct ath11k_base *ab, 424 enum ath11k_firmware_mode mode) 425 { 426 int ret; 427 428 ret = ath11k_qmi_firmware_start(ab, mode); 429 if (ret) { 430 ath11k_err(ab, "failed to attach wmi: %d\n", ret); 431 return ret; 432 } 433 434 ret = ath11k_wmi_attach(ab); 435 if (ret) { 436 ath11k_err(ab, "failed to attach wmi: %d\n", ret); 437 goto err_firmware_stop; 438 } 439 440 ret = ath11k_htc_init(ab); 441 if (ret) { 442 ath11k_err(ab, "failed to init htc: %d\n", ret); 443 goto err_wmi_detach; 444 } 445 446 ret = ath11k_ahb_start(ab); 447 if (ret) { 448 ath11k_err(ab, "failed to start HIF: %d\n", ret); 449 goto err_wmi_detach; 450 } 451 452 ret = ath11k_htc_wait_target(&ab->htc); 453 if (ret) { 454 ath11k_err(ab, "failed to connect to HTC: %d\n", ret); 455 goto err_hif_stop; 456 } 457 458 ret = ath11k_dp_htt_connect(&ab->dp); 459 if (ret) { 460 ath11k_err(ab, "failed to connect to HTT: %d\n", ret); 461 goto err_hif_stop; 462 } 463 464 ret = ath11k_wmi_connect(ab); 465 if (ret) { 466 ath11k_err(ab, "failed to connect wmi: %d\n", ret); 467 goto err_hif_stop; 468 } 469 470 ret = ath11k_htc_start(&ab->htc); 471 if (ret) { 472 ath11k_err(ab, "failed to start HTC: %d\n", ret); 473 goto err_hif_stop; 474 } 475 476 ret = ath11k_wmi_wait_for_service_ready(ab); 477 if (ret) { 478 ath11k_err(ab, "failed to receive wmi service ready event: %d\n", 479 ret); 480 goto err_hif_stop; 481 } 482 483 ret = ath11k_mac_allocate(ab); 484 if (ret) { 485 ath11k_err(ab, "failed to create new hw device with mac80211 :%d\n", 486 ret); 487 goto err_hif_stop; 488 } 489 490 ath11k_dp_pdev_pre_alloc(ab); 491 492 ret = ath11k_dp_pdev_reo_setup(ab); 493 if (ret) { 494 ath11k_err(ab, "failed to initialize reo destination rings: %d\n", ret); 495 goto err_mac_destroy; 496 } 497 498 ret = ath11k_wmi_cmd_init(ab); 499 if (ret) { 500 ath11k_err(ab, "failed to send wmi init cmd: %d\n", ret); 501 goto err_reo_cleanup; 502 } 503 504 ret = ath11k_wmi_wait_for_unified_ready(ab); 505 if (ret) { 506 ath11k_err(ab, "failed to receive wmi unified ready event: %d\n", 507 ret); 508 goto err_reo_cleanup; 509 } 510 511 ret = ath11k_dp_tx_htt_h2t_ver_req_msg(ab); 512 if (ret) { 513 ath11k_err(ab, "failed to send htt version request message: %d\n", 514 ret); 515 goto err_reo_cleanup; 516 } 517 518 return 0; 519 520 err_reo_cleanup: 521 ath11k_dp_pdev_reo_cleanup(ab); 522 err_mac_destroy: 523 ath11k_mac_destroy(ab); 524 err_hif_stop: 525 ath11k_ahb_stop(ab); 526 err_wmi_detach: 527 ath11k_wmi_detach(ab); 528 err_firmware_stop: 529 ath11k_qmi_firmware_stop(ab); 530 531 return ret; 532 } 533 534 int ath11k_core_qmi_firmware_ready(struct ath11k_base *ab) 535 { 536 int ret; 537 538 ret = ath11k_ce_init_pipes(ab); 539 if (ret) { 540 ath11k_err(ab, "failed to initialize CE: %d\n", ret); 541 return ret; 542 } 543 544 ret = ath11k_dp_alloc(ab); 545 if (ret) { 546 ath11k_err(ab, "failed to init DP: %d\n", ret); 547 return ret; 548 } 549 550 mutex_lock(&ab->core_lock); 551 ret = ath11k_core_start(ab, ATH11K_FIRMWARE_MODE_NORMAL); 552 if (ret) { 553 ath11k_err(ab, "failed to start core: %d\n", ret); 554 goto err_dp_free; 555 } 556 557 ret = ath11k_core_pdev_create(ab); 558 if (ret) { 559 ath11k_err(ab, "failed to create pdev core: %d\n", ret); 560 goto err_core_stop; 561 } 562 ath11k_ahb_ext_irq_enable(ab); 563 mutex_unlock(&ab->core_lock); 564 565 return 0; 566 567 err_core_stop: 568 ath11k_core_stop(ab); 569 ath11k_mac_destroy(ab); 570 err_dp_free: 571 ath11k_dp_free(ab); 572 mutex_unlock(&ab->core_lock); 573 return ret; 574 } 575 576 static int ath11k_core_reconfigure_on_crash(struct ath11k_base *ab) 577 { 578 int ret; 579 580 mutex_lock(&ab->core_lock); 581 ath11k_thermal_unregister(ab); 582 ath11k_ahb_ext_irq_disable(ab); 583 ath11k_dp_pdev_free(ab); 584 ath11k_ahb_stop(ab); 585 ath11k_wmi_detach(ab); 586 ath11k_dp_pdev_reo_cleanup(ab); 587 mutex_unlock(&ab->core_lock); 588 589 ath11k_dp_free(ab); 590 ath11k_hal_srng_deinit(ab); 591 592 ab->free_vdev_map = (1LL << (ab->num_radios * TARGET_NUM_VDEVS)) - 1; 593 594 ret = ath11k_hal_srng_init(ab); 595 if (ret) 596 return ret; 597 598 clear_bit(ATH11K_FLAG_CRASH_FLUSH, &ab->dev_flags); 599 600 ret = ath11k_core_qmi_firmware_ready(ab); 601 if (ret) 602 goto err_hal_srng_deinit; 603 604 clear_bit(ATH11K_FLAG_RECOVERY, &ab->dev_flags); 605 606 return 0; 607 608 err_hal_srng_deinit: 609 ath11k_hal_srng_deinit(ab); 610 return ret; 611 } 612 613 void ath11k_core_halt(struct ath11k *ar) 614 { 615 struct ath11k_base *ab = ar->ab; 616 617 lockdep_assert_held(&ar->conf_mutex); 618 619 ar->num_created_vdevs = 0; 620 ar->allocated_vdev_map = 0; 621 622 ath11k_mac_scan_finish(ar); 623 ath11k_mac_peer_cleanup_all(ar); 624 cancel_delayed_work_sync(&ar->scan.timeout); 625 cancel_work_sync(&ar->regd_update_work); 626 627 rcu_assign_pointer(ab->pdevs_active[ar->pdev_idx], NULL); 628 synchronize_rcu(); 629 INIT_LIST_HEAD(&ar->arvifs); 630 idr_init(&ar->txmgmt_idr); 631 } 632 633 static void ath11k_core_restart(struct work_struct *work) 634 { 635 struct ath11k_base *ab = container_of(work, struct ath11k_base, restart_work); 636 struct ath11k *ar; 637 struct ath11k_pdev *pdev; 638 int i, ret = 0; 639 640 spin_lock_bh(&ab->base_lock); 641 ab->stats.fw_crash_counter++; 642 spin_unlock_bh(&ab->base_lock); 643 644 for (i = 0; i < ab->num_radios; i++) { 645 pdev = &ab->pdevs[i]; 646 ar = pdev->ar; 647 if (!ar || ar->state == ATH11K_STATE_OFF) 648 continue; 649 650 ieee80211_stop_queues(ar->hw); 651 ath11k_mac_drain_tx(ar); 652 complete(&ar->scan.started); 653 complete(&ar->scan.completed); 654 complete(&ar->peer_assoc_done); 655 complete(&ar->install_key_done); 656 complete(&ar->vdev_setup_done); 657 complete(&ar->bss_survey_done); 658 complete(&ar->thermal.wmi_sync); 659 660 wake_up(&ar->dp.tx_empty_waitq); 661 idr_for_each(&ar->txmgmt_idr, 662 ath11k_mac_tx_mgmt_pending_free, ar); 663 idr_destroy(&ar->txmgmt_idr); 664 } 665 666 wake_up(&ab->wmi_ab.tx_credits_wq); 667 wake_up(&ab->peer_mapping_wq); 668 669 ret = ath11k_core_reconfigure_on_crash(ab); 670 if (ret) { 671 ath11k_err(ab, "failed to reconfigure driver on crash recovery\n"); 672 return; 673 } 674 675 for (i = 0; i < ab->num_radios; i++) { 676 pdev = &ab->pdevs[i]; 677 ar = pdev->ar; 678 if (!ar || ar->state == ATH11K_STATE_OFF) 679 continue; 680 681 mutex_lock(&ar->conf_mutex); 682 683 switch (ar->state) { 684 case ATH11K_STATE_ON: 685 ar->state = ATH11K_STATE_RESTARTING; 686 ath11k_core_halt(ar); 687 ieee80211_restart_hw(ar->hw); 688 break; 689 case ATH11K_STATE_OFF: 690 ath11k_warn(ab, 691 "cannot restart radio %d that hasn't been started\n", 692 i); 693 break; 694 case ATH11K_STATE_RESTARTING: 695 break; 696 case ATH11K_STATE_RESTARTED: 697 ar->state = ATH11K_STATE_WEDGED; 698 /* fall through */ 699 case ATH11K_STATE_WEDGED: 700 ath11k_warn(ab, 701 "device is wedged, will not restart radio %d\n", i); 702 break; 703 } 704 mutex_unlock(&ar->conf_mutex); 705 } 706 complete(&ab->driver_recovery); 707 } 708 709 int ath11k_core_init(struct ath11k_base *ab) 710 { 711 struct device *dev = ab->dev; 712 struct rproc *prproc; 713 phandle rproc_phandle; 714 int ret; 715 716 if (of_property_read_u32(dev->of_node, "qcom,rproc", &rproc_phandle)) { 717 ath11k_err(ab, "failed to get q6_rproc handle\n"); 718 return -ENOENT; 719 } 720 721 prproc = rproc_get_by_phandle(rproc_phandle); 722 if (!prproc) { 723 ath11k_err(ab, "failed to get rproc\n"); 724 return -EINVAL; 725 } 726 ab->tgt_rproc = prproc; 727 ab->hw_params = ath11k_hw_params; 728 729 ret = ath11k_core_soc_create(ab); 730 if (ret) { 731 ath11k_err(ab, "failed to create soc core: %d\n", ret); 732 return ret; 733 } 734 735 return 0; 736 } 737 738 void ath11k_core_deinit(struct ath11k_base *ab) 739 { 740 mutex_lock(&ab->core_lock); 741 742 ath11k_core_pdev_destroy(ab); 743 ath11k_core_stop(ab); 744 745 mutex_unlock(&ab->core_lock); 746 747 ath11k_ahb_power_down(ab); 748 ath11k_mac_destroy(ab); 749 ath11k_core_soc_destroy(ab); 750 } 751 752 void ath11k_core_free(struct ath11k_base *ab) 753 { 754 kfree(ab); 755 } 756 757 struct ath11k_base *ath11k_core_alloc(struct device *dev) 758 { 759 struct ath11k_base *ab; 760 761 ab = kzalloc(sizeof(*ab), GFP_KERNEL); 762 if (!ab) 763 return NULL; 764 765 init_completion(&ab->driver_recovery); 766 767 ab->workqueue = create_singlethread_workqueue("ath11k_wq"); 768 if (!ab->workqueue) 769 goto err_sc_free; 770 771 mutex_init(&ab->core_lock); 772 spin_lock_init(&ab->base_lock); 773 774 INIT_LIST_HEAD(&ab->peers); 775 init_waitqueue_head(&ab->peer_mapping_wq); 776 init_waitqueue_head(&ab->wmi_ab.tx_credits_wq); 777 INIT_WORK(&ab->restart_work, ath11k_core_restart); 778 timer_setup(&ab->rx_replenish_retry, ath11k_ce_rx_replenish_retry, 0); 779 ab->dev = dev; 780 781 return ab; 782 783 err_sc_free: 784 kfree(ab); 785 return NULL; 786 } 787 788 static int __init ath11k_init(void) 789 { 790 int ret; 791 792 ret = ath11k_ahb_init(); 793 if (ret) 794 printk(KERN_ERR "failed to register ath11k ahb driver: %d\n", 795 ret); 796 return ret; 797 } 798 module_init(ath11k_init); 799 800 static void __exit ath11k_exit(void) 801 { 802 ath11k_ahb_exit(); 803 } 804 module_exit(ath11k_exit); 805 806 MODULE_DESCRIPTION("Driver support for Qualcomm Technologies 802.11ax wireless chip"); 807 MODULE_LICENSE("Dual BSD/GPL"); 808