core.c revision c508671dd589e75c0d5092a0a3c15d0375d3ce48
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 result, address = ar->hw_params.patch_load_addr; 253 int ret; 254 255 /* OTP is optional */ 256 257 if (!ar->otp_data || !ar->otp_len) { 258 ath10k_warn("Not running otp, calibration will be incorrect (otp-data %p otp_len %zd)!\n", 259 ar->otp_data, ar->otp_len); 260 return 0; 261 } 262 263 ath10k_dbg(ATH10K_DBG_BOOT, "boot upload otp to 0x%x len %zd\n", 264 address, ar->otp_len); 265 266 ret = ath10k_bmi_fast_download(ar, address, ar->otp_data, ar->otp_len); 267 if (ret) { 268 ath10k_err("could not write otp (%d)\n", ret); 269 return ret; 270 } 271 272 ret = ath10k_bmi_execute(ar, address, 0, &result); 273 if (ret) { 274 ath10k_err("could not execute otp (%d)\n", ret); 275 return ret; 276 } 277 278 ath10k_dbg(ATH10K_DBG_BOOT, "boot otp execute result %d\n", result); 279 280 if (result != 0) { 281 ath10k_err("otp calibration failed: %d", result); 282 return -EINVAL; 283 } 284 285 return 0; 286} 287 288static int ath10k_download_fw(struct ath10k *ar) 289{ 290 u32 address; 291 int ret; 292 293 address = ar->hw_params.patch_load_addr; 294 295 ret = ath10k_bmi_fast_download(ar, address, ar->firmware_data, 296 ar->firmware_len); 297 if (ret) { 298 ath10k_err("could not write fw (%d)\n", ret); 299 goto exit; 300 } 301 302exit: 303 return ret; 304} 305 306static void ath10k_core_free_firmware_files(struct ath10k *ar) 307{ 308 if (ar->board && !IS_ERR(ar->board)) 309 release_firmware(ar->board); 310 311 if (ar->otp && !IS_ERR(ar->otp)) 312 release_firmware(ar->otp); 313 314 if (ar->firmware && !IS_ERR(ar->firmware)) 315 release_firmware(ar->firmware); 316 317 ar->board = NULL; 318 ar->board_data = NULL; 319 ar->board_len = 0; 320 321 ar->otp = NULL; 322 ar->otp_data = NULL; 323 ar->otp_len = 0; 324 325 ar->firmware = NULL; 326 ar->firmware_data = NULL; 327 ar->firmware_len = 0; 328} 329 330static int ath10k_core_fetch_firmware_api_1(struct ath10k *ar) 331{ 332 int ret = 0; 333 334 if (ar->hw_params.fw.fw == NULL) { 335 ath10k_err("firmware file not defined\n"); 336 return -EINVAL; 337 } 338 339 if (ar->hw_params.fw.board == NULL) { 340 ath10k_err("board data file not defined"); 341 return -EINVAL; 342 } 343 344 ar->board = ath10k_fetch_fw_file(ar, 345 ar->hw_params.fw.dir, 346 ar->hw_params.fw.board); 347 if (IS_ERR(ar->board)) { 348 ret = PTR_ERR(ar->board); 349 ath10k_err("could not fetch board data (%d)\n", ret); 350 goto err; 351 } 352 353 ar->board_data = ar->board->data; 354 ar->board_len = ar->board->size; 355 356 ar->firmware = ath10k_fetch_fw_file(ar, 357 ar->hw_params.fw.dir, 358 ar->hw_params.fw.fw); 359 if (IS_ERR(ar->firmware)) { 360 ret = PTR_ERR(ar->firmware); 361 ath10k_err("could not fetch firmware (%d)\n", ret); 362 goto err; 363 } 364 365 ar->firmware_data = ar->firmware->data; 366 ar->firmware_len = ar->firmware->size; 367 368 /* OTP may be undefined. If so, don't fetch it at all */ 369 if (ar->hw_params.fw.otp == NULL) 370 return 0; 371 372 ar->otp = ath10k_fetch_fw_file(ar, 373 ar->hw_params.fw.dir, 374 ar->hw_params.fw.otp); 375 if (IS_ERR(ar->otp)) { 376 ret = PTR_ERR(ar->otp); 377 ath10k_err("could not fetch otp (%d)\n", ret); 378 goto err; 379 } 380 381 ar->otp_data = ar->otp->data; 382 ar->otp_len = ar->otp->size; 383 384 return 0; 385 386err: 387 ath10k_core_free_firmware_files(ar); 388 return ret; 389} 390 391static int ath10k_core_fetch_firmware_api_n(struct ath10k *ar, const char *name) 392{ 393 size_t magic_len, len, ie_len; 394 int ie_id, i, index, bit, ret; 395 struct ath10k_fw_ie *hdr; 396 const u8 *data; 397 __le32 *timestamp; 398 399 /* first fetch the firmware file (firmware-*.bin) */ 400 ar->firmware = ath10k_fetch_fw_file(ar, ar->hw_params.fw.dir, name); 401 if (IS_ERR(ar->firmware)) { 402 ath10k_err("could not fetch firmware file '%s/%s': %ld\n", 403 ar->hw_params.fw.dir, name, PTR_ERR(ar->firmware)); 404 return PTR_ERR(ar->firmware); 405 } 406 407 data = ar->firmware->data; 408 len = ar->firmware->size; 409 410 /* magic also includes the null byte, check that as well */ 411 magic_len = strlen(ATH10K_FIRMWARE_MAGIC) + 1; 412 413 if (len < magic_len) { 414 ath10k_err("firmware file '%s/%s' too small to contain magic: %zu\n", 415 ar->hw_params.fw.dir, name, len); 416 ret = -EINVAL; 417 goto err; 418 } 419 420 if (memcmp(data, ATH10K_FIRMWARE_MAGIC, magic_len) != 0) { 421 ath10k_err("invalid firmware magic\n"); 422 ret = -EINVAL; 423 goto err; 424 } 425 426 /* jump over the padding */ 427 magic_len = ALIGN(magic_len, 4); 428 429 len -= magic_len; 430 data += magic_len; 431 432 /* loop elements */ 433 while (len > sizeof(struct ath10k_fw_ie)) { 434 hdr = (struct ath10k_fw_ie *)data; 435 436 ie_id = le32_to_cpu(hdr->id); 437 ie_len = le32_to_cpu(hdr->len); 438 439 len -= sizeof(*hdr); 440 data += sizeof(*hdr); 441 442 if (len < ie_len) { 443 ath10k_err("invalid length for FW IE %d (%zu < %zu)\n", 444 ie_id, len, ie_len); 445 ret = -EINVAL; 446 goto err; 447 } 448 449 switch (ie_id) { 450 case ATH10K_FW_IE_FW_VERSION: 451 if (ie_len > sizeof(ar->hw->wiphy->fw_version) - 1) 452 break; 453 454 memcpy(ar->hw->wiphy->fw_version, data, ie_len); 455 ar->hw->wiphy->fw_version[ie_len] = '\0'; 456 457 ath10k_dbg(ATH10K_DBG_BOOT, 458 "found fw version %s\n", 459 ar->hw->wiphy->fw_version); 460 break; 461 case ATH10K_FW_IE_TIMESTAMP: 462 if (ie_len != sizeof(u32)) 463 break; 464 465 timestamp = (__le32 *)data; 466 467 ath10k_dbg(ATH10K_DBG_BOOT, "found fw timestamp %d\n", 468 le32_to_cpup(timestamp)); 469 break; 470 case ATH10K_FW_IE_FEATURES: 471 ath10k_dbg(ATH10K_DBG_BOOT, 472 "found firmware features ie (%zd B)\n", 473 ie_len); 474 475 for (i = 0; i < ATH10K_FW_FEATURE_COUNT; i++) { 476 index = i / 8; 477 bit = i % 8; 478 479 if (index == ie_len) 480 break; 481 482 if (data[index] & (1 << bit)) { 483 ath10k_dbg(ATH10K_DBG_BOOT, 484 "Enabling feature bit: %i\n", 485 i); 486 __set_bit(i, ar->fw_features); 487 } 488 } 489 490 ath10k_dbg_dump(ATH10K_DBG_BOOT, "features", "", 491 ar->fw_features, 492 sizeof(ar->fw_features)); 493 break; 494 case ATH10K_FW_IE_FW_IMAGE: 495 ath10k_dbg(ATH10K_DBG_BOOT, 496 "found fw image ie (%zd B)\n", 497 ie_len); 498 499 ar->firmware_data = data; 500 ar->firmware_len = ie_len; 501 502 break; 503 case ATH10K_FW_IE_OTP_IMAGE: 504 ath10k_dbg(ATH10K_DBG_BOOT, 505 "found otp image ie (%zd B)\n", 506 ie_len); 507 508 ar->otp_data = data; 509 ar->otp_len = ie_len; 510 511 break; 512 default: 513 ath10k_warn("Unknown FW IE: %u\n", 514 le32_to_cpu(hdr->id)); 515 break; 516 } 517 518 /* jump over the padding */ 519 ie_len = ALIGN(ie_len, 4); 520 521 len -= ie_len; 522 data += ie_len; 523 } 524 525 if (!ar->firmware_data || !ar->firmware_len) { 526 ath10k_warn("No ATH10K_FW_IE_FW_IMAGE found from '%s/%s', skipping\n", 527 ar->hw_params.fw.dir, name); 528 ret = -ENOMEDIUM; 529 goto err; 530 } 531 532 /* now fetch the board file */ 533 if (ar->hw_params.fw.board == NULL) { 534 ath10k_err("board data file not defined"); 535 ret = -EINVAL; 536 goto err; 537 } 538 539 ar->board = ath10k_fetch_fw_file(ar, 540 ar->hw_params.fw.dir, 541 ar->hw_params.fw.board); 542 if (IS_ERR(ar->board)) { 543 ret = PTR_ERR(ar->board); 544 ath10k_err("could not fetch board data '%s/%s' (%d)\n", 545 ar->hw_params.fw.dir, ar->hw_params.fw.board, 546 ret); 547 goto err; 548 } 549 550 ar->board_data = ar->board->data; 551 ar->board_len = ar->board->size; 552 553 return 0; 554 555err: 556 ath10k_core_free_firmware_files(ar); 557 return ret; 558} 559 560static int ath10k_core_fetch_firmware_files(struct ath10k *ar) 561{ 562 int ret; 563 564 ar->fw_api = 2; 565 ath10k_dbg(ATH10K_DBG_BOOT, "trying fw api %d\n", ar->fw_api); 566 567 ret = ath10k_core_fetch_firmware_api_n(ar, ATH10K_FW_API2_FILE); 568 if (ret == 0) 569 goto success; 570 571 ar->fw_api = 1; 572 ath10k_dbg(ATH10K_DBG_BOOT, "trying fw api %d\n", ar->fw_api); 573 574 ret = ath10k_core_fetch_firmware_api_1(ar); 575 if (ret) 576 return ret; 577 578success: 579 ath10k_dbg(ATH10K_DBG_BOOT, "using fw api %d\n", ar->fw_api); 580 581 return 0; 582} 583 584static int ath10k_init_download_firmware(struct ath10k *ar) 585{ 586 int ret; 587 588 ret = ath10k_download_board_data(ar); 589 if (ret) { 590 ath10k_err("failed to download board data: %d\n", ret); 591 return ret; 592 } 593 594 ret = ath10k_download_and_run_otp(ar); 595 if (ret) { 596 ath10k_err("failed to run otp: %d\n", ret); 597 return ret; 598 } 599 600 ret = ath10k_download_fw(ar); 601 if (ret) { 602 ath10k_err("failed to download firmware: %d\n", ret); 603 return ret; 604 } 605 606 return ret; 607} 608 609static int ath10k_init_uart(struct ath10k *ar) 610{ 611 int ret; 612 613 /* 614 * Explicitly setting UART prints to zero as target turns it on 615 * based on scratch registers. 616 */ 617 ret = ath10k_bmi_write32(ar, hi_serial_enable, 0); 618 if (ret) { 619 ath10k_warn("could not disable UART prints (%d)\n", ret); 620 return ret; 621 } 622 623 if (!uart_print) 624 return 0; 625 626 ret = ath10k_bmi_write32(ar, hi_dbg_uart_txpin, 7); 627 if (ret) { 628 ath10k_warn("could not enable UART prints (%d)\n", ret); 629 return ret; 630 } 631 632 ret = ath10k_bmi_write32(ar, hi_serial_enable, 1); 633 if (ret) { 634 ath10k_warn("could not enable UART prints (%d)\n", ret); 635 return ret; 636 } 637 638 /* Set the UART baud rate to 19200. */ 639 ret = ath10k_bmi_write32(ar, hi_desired_baud_rate, 19200); 640 if (ret) { 641 ath10k_warn("could not set the baud rate (%d)\n", ret); 642 return ret; 643 } 644 645 ath10k_info("UART prints enabled\n"); 646 return 0; 647} 648 649static int ath10k_init_hw_params(struct ath10k *ar) 650{ 651 const struct ath10k_hw_params *uninitialized_var(hw_params); 652 int i; 653 654 for (i = 0; i < ARRAY_SIZE(ath10k_hw_params_list); i++) { 655 hw_params = &ath10k_hw_params_list[i]; 656 657 if (hw_params->id == ar->target_version) 658 break; 659 } 660 661 if (i == ARRAY_SIZE(ath10k_hw_params_list)) { 662 ath10k_err("Unsupported hardware version: 0x%x\n", 663 ar->target_version); 664 return -EINVAL; 665 } 666 667 ar->hw_params = *hw_params; 668 669 ath10k_dbg(ATH10K_DBG_BOOT, "Hardware name %s version 0x%x\n", 670 ar->hw_params.name, ar->target_version); 671 672 return 0; 673} 674 675static void ath10k_core_restart(struct work_struct *work) 676{ 677 struct ath10k *ar = container_of(work, struct ath10k, restart_work); 678 679 mutex_lock(&ar->conf_mutex); 680 681 switch (ar->state) { 682 case ATH10K_STATE_ON: 683 ath10k_halt(ar); 684 ar->state = ATH10K_STATE_RESTARTING; 685 ieee80211_restart_hw(ar->hw); 686 break; 687 case ATH10K_STATE_OFF: 688 /* this can happen if driver is being unloaded 689 * or if the crash happens during FW probing */ 690 ath10k_warn("cannot restart a device that hasn't been started\n"); 691 break; 692 case ATH10K_STATE_RESTARTING: 693 case ATH10K_STATE_RESTARTED: 694 ar->state = ATH10K_STATE_WEDGED; 695 /* fall through */ 696 case ATH10K_STATE_WEDGED: 697 ath10k_warn("device is wedged, will not restart\n"); 698 break; 699 } 700 701 mutex_unlock(&ar->conf_mutex); 702} 703 704struct ath10k *ath10k_core_create(void *hif_priv, struct device *dev, 705 const struct ath10k_hif_ops *hif_ops) 706{ 707 struct ath10k *ar; 708 709 ar = ath10k_mac_create(); 710 if (!ar) 711 return NULL; 712 713 ar->ath_common.priv = ar; 714 ar->ath_common.hw = ar->hw; 715 716 ar->p2p = !!ath10k_p2p; 717 ar->dev = dev; 718 719 ar->hif.priv = hif_priv; 720 ar->hif.ops = hif_ops; 721 722 init_completion(&ar->scan.started); 723 init_completion(&ar->scan.completed); 724 init_completion(&ar->scan.on_channel); 725 init_completion(&ar->target_suspend); 726 727 init_completion(&ar->install_key_done); 728 init_completion(&ar->vdev_setup_done); 729 730 setup_timer(&ar->scan.timeout, ath10k_reset_scan, (unsigned long)ar); 731 732 ar->workqueue = create_singlethread_workqueue("ath10k_wq"); 733 if (!ar->workqueue) 734 goto err_wq; 735 736 mutex_init(&ar->conf_mutex); 737 spin_lock_init(&ar->data_lock); 738 739 INIT_LIST_HEAD(&ar->peers); 740 init_waitqueue_head(&ar->peer_mapping_wq); 741 742 init_completion(&ar->offchan_tx_completed); 743 INIT_WORK(&ar->offchan_tx_work, ath10k_offchan_tx_work); 744 skb_queue_head_init(&ar->offchan_tx_queue); 745 746 INIT_WORK(&ar->wmi_mgmt_tx_work, ath10k_mgmt_over_wmi_tx_work); 747 skb_queue_head_init(&ar->wmi_mgmt_tx_queue); 748 749 INIT_WORK(&ar->restart_work, ath10k_core_restart); 750 751 return ar; 752 753err_wq: 754 ath10k_mac_destroy(ar); 755 return NULL; 756} 757EXPORT_SYMBOL(ath10k_core_create); 758 759void ath10k_core_destroy(struct ath10k *ar) 760{ 761 flush_workqueue(ar->workqueue); 762 destroy_workqueue(ar->workqueue); 763 764 ath10k_mac_destroy(ar); 765} 766EXPORT_SYMBOL(ath10k_core_destroy); 767 768int ath10k_core_start(struct ath10k *ar) 769{ 770 int status; 771 772 lockdep_assert_held(&ar->conf_mutex); 773 774 ath10k_bmi_start(ar); 775 776 if (ath10k_init_configure_target(ar)) { 777 status = -EINVAL; 778 goto err; 779 } 780 781 status = ath10k_init_download_firmware(ar); 782 if (status) 783 goto err; 784 785 status = ath10k_init_uart(ar); 786 if (status) 787 goto err; 788 789 ar->htc.htc_ops.target_send_suspend_complete = 790 ath10k_send_suspend_complete; 791 792 status = ath10k_htc_init(ar); 793 if (status) { 794 ath10k_err("could not init HTC (%d)\n", status); 795 goto err; 796 } 797 798 status = ath10k_bmi_done(ar); 799 if (status) 800 goto err; 801 802 status = ath10k_wmi_attach(ar); 803 if (status) { 804 ath10k_err("WMI attach failed: %d\n", status); 805 goto err; 806 } 807 808 status = ath10k_hif_start(ar); 809 if (status) { 810 ath10k_err("could not start HIF: %d\n", status); 811 goto err_wmi_detach; 812 } 813 814 status = ath10k_htc_wait_target(&ar->htc); 815 if (status) { 816 ath10k_err("failed to connect to HTC: %d\n", status); 817 goto err_hif_stop; 818 } 819 820 status = ath10k_htt_attach(ar); 821 if (status) { 822 ath10k_err("could not attach htt (%d)\n", status); 823 goto err_hif_stop; 824 } 825 826 status = ath10k_init_connect_htc(ar); 827 if (status) 828 goto err_htt_detach; 829 830 ath10k_dbg(ATH10K_DBG_BOOT, "firmware %s booted\n", 831 ar->hw->wiphy->fw_version); 832 833 status = ath10k_wmi_cmd_init(ar); 834 if (status) { 835 ath10k_err("could not send WMI init command (%d)\n", status); 836 goto err_disconnect_htc; 837 } 838 839 status = ath10k_wmi_wait_for_unified_ready(ar); 840 if (status <= 0) { 841 ath10k_err("wmi unified ready event not received\n"); 842 status = -ETIMEDOUT; 843 goto err_disconnect_htc; 844 } 845 846 status = ath10k_htt_attach_target(&ar->htt); 847 if (status) 848 goto err_disconnect_htc; 849 850 status = ath10k_debug_start(ar); 851 if (status) 852 goto err_disconnect_htc; 853 854 ar->free_vdev_map = (1 << TARGET_NUM_VDEVS) - 1; 855 INIT_LIST_HEAD(&ar->arvifs); 856 857 if (!test_bit(ATH10K_FLAG_FIRST_BOOT_DONE, &ar->dev_flags)) 858 ath10k_info("%s (0x%08x, 0x%08x) fw %s api %d htt %d.%d\n", 859 ar->hw_params.name, 860 ar->target_version, 861 ar->chip_id, 862 ar->hw->wiphy->fw_version, 863 ar->fw_api, 864 ar->htt.target_version_major, 865 ar->htt.target_version_minor); 866 867 __set_bit(ATH10K_FLAG_FIRST_BOOT_DONE, &ar->dev_flags); 868 869 return 0; 870 871err_disconnect_htc: 872 ath10k_htc_stop(&ar->htc); 873err_htt_detach: 874 ath10k_htt_detach(&ar->htt); 875err_hif_stop: 876 ath10k_hif_stop(ar); 877err_wmi_detach: 878 ath10k_wmi_detach(ar); 879err: 880 return status; 881} 882EXPORT_SYMBOL(ath10k_core_start); 883 884int ath10k_wait_for_suspend(struct ath10k *ar, u32 suspend_opt) 885{ 886 int ret; 887 888 reinit_completion(&ar->target_suspend); 889 890 ret = ath10k_wmi_pdev_suspend_target(ar, suspend_opt); 891 if (ret) { 892 ath10k_warn("could not suspend target (%d)\n", ret); 893 return ret; 894 } 895 896 ret = wait_for_completion_timeout(&ar->target_suspend, 1 * HZ); 897 898 if (ret == 0) { 899 ath10k_warn("suspend timed out - target pause event never came\n"); 900 return -ETIMEDOUT; 901 } 902 903 return 0; 904} 905 906void ath10k_core_stop(struct ath10k *ar) 907{ 908 lockdep_assert_held(&ar->conf_mutex); 909 910 /* try to suspend target */ 911 ath10k_wait_for_suspend(ar, WMI_PDEV_SUSPEND_AND_DISABLE_INTR); 912 ath10k_debug_stop(ar); 913 ath10k_htc_stop(&ar->htc); 914 ath10k_htt_detach(&ar->htt); 915 ath10k_wmi_detach(ar); 916} 917EXPORT_SYMBOL(ath10k_core_stop); 918 919/* mac80211 manages fw/hw initialization through start/stop hooks. However in 920 * order to know what hw capabilities should be advertised to mac80211 it is 921 * necessary to load the firmware (and tear it down immediately since start 922 * hook will try to init it again) before registering */ 923static int ath10k_core_probe_fw(struct ath10k *ar) 924{ 925 struct bmi_target_info target_info; 926 int ret = 0; 927 928 ret = ath10k_hif_power_up(ar); 929 if (ret) { 930 ath10k_err("could not start pci hif (%d)\n", ret); 931 return ret; 932 } 933 934 memset(&target_info, 0, sizeof(target_info)); 935 ret = ath10k_bmi_get_target_info(ar, &target_info); 936 if (ret) { 937 ath10k_err("could not get target info (%d)\n", ret); 938 ath10k_hif_power_down(ar); 939 return ret; 940 } 941 942 ar->target_version = target_info.version; 943 ar->hw->wiphy->hw_version = target_info.version; 944 945 ret = ath10k_init_hw_params(ar); 946 if (ret) { 947 ath10k_err("could not get hw params (%d)\n", ret); 948 ath10k_hif_power_down(ar); 949 return ret; 950 } 951 952 ret = ath10k_core_fetch_firmware_files(ar); 953 if (ret) { 954 ath10k_err("could not fetch firmware files (%d)\n", ret); 955 ath10k_hif_power_down(ar); 956 return ret; 957 } 958 959 mutex_lock(&ar->conf_mutex); 960 961 ret = ath10k_core_start(ar); 962 if (ret) { 963 ath10k_err("could not init core (%d)\n", ret); 964 ath10k_core_free_firmware_files(ar); 965 ath10k_hif_power_down(ar); 966 mutex_unlock(&ar->conf_mutex); 967 return ret; 968 } 969 970 ath10k_core_stop(ar); 971 972 mutex_unlock(&ar->conf_mutex); 973 974 ath10k_hif_power_down(ar); 975 return 0; 976} 977 978static int ath10k_core_check_chip_id(struct ath10k *ar) 979{ 980 u32 hw_revision = MS(ar->chip_id, SOC_CHIP_ID_REV); 981 982 ath10k_dbg(ATH10K_DBG_BOOT, "boot chip_id 0x%08x hw_revision 0x%x\n", 983 ar->chip_id, hw_revision); 984 985 /* Check that we are not using hw1.0 (some of them have same pci id 986 * as hw2.0) before doing anything else as ath10k crashes horribly 987 * due to missing hw1.0 workarounds. */ 988 switch (hw_revision) { 989 case QCA988X_HW_1_0_CHIP_ID_REV: 990 ath10k_err("ERROR: qca988x hw1.0 is not supported\n"); 991 return -EOPNOTSUPP; 992 993 case QCA988X_HW_2_0_CHIP_ID_REV: 994 /* known hardware revision, continue normally */ 995 return 0; 996 997 default: 998 ath10k_warn("Warning: hardware revision unknown (0x%x), expect problems\n", 999 ar->chip_id); 1000 return 0; 1001 } 1002 1003 return 0; 1004} 1005 1006int ath10k_core_register(struct ath10k *ar, u32 chip_id) 1007{ 1008 int status; 1009 1010 ar->chip_id = chip_id; 1011 1012 status = ath10k_core_check_chip_id(ar); 1013 if (status) { 1014 ath10k_err("Unsupported chip id 0x%08x\n", ar->chip_id); 1015 return status; 1016 } 1017 1018 status = ath10k_core_probe_fw(ar); 1019 if (status) { 1020 ath10k_err("could not probe fw (%d)\n", status); 1021 return status; 1022 } 1023 1024 status = ath10k_mac_register(ar); 1025 if (status) { 1026 ath10k_err("could not register to mac80211 (%d)\n", status); 1027 goto err_release_fw; 1028 } 1029 1030 status = ath10k_debug_create(ar); 1031 if (status) { 1032 ath10k_err("unable to initialize debugfs\n"); 1033 goto err_unregister_mac; 1034 } 1035 1036 return 0; 1037 1038err_unregister_mac: 1039 ath10k_mac_unregister(ar); 1040err_release_fw: 1041 ath10k_core_free_firmware_files(ar); 1042 return status; 1043} 1044EXPORT_SYMBOL(ath10k_core_register); 1045 1046void ath10k_core_unregister(struct ath10k *ar) 1047{ 1048 /* We must unregister from mac80211 before we stop HTC and HIF. 1049 * Otherwise we will fail to submit commands to FW and mac80211 will be 1050 * unhappy about callback failures. */ 1051 ath10k_mac_unregister(ar); 1052 1053 ath10k_core_free_firmware_files(ar); 1054 1055 ath10k_debug_destroy(ar); 1056} 1057EXPORT_SYMBOL(ath10k_core_unregister); 1058 1059MODULE_AUTHOR("Qualcomm Atheros"); 1060MODULE_DESCRIPTION("Core module for QCA988X PCIe devices."); 1061MODULE_LICENSE("Dual BSD/GPL"); 1062