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