drivers/net/wireless/ath/ath10k/core.c

   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_1_0_VERSION,
  43                 .name = "qca988x hw1.0",
  44                 .patch_load_addr = QCA988X_HW_1_0_PATCH_LOAD_ADDR,
  45                 .fw = {
  46                         .dir = QCA988X_HW_1_0_FW_DIR,
  47                         .fw = QCA988X_HW_1_0_FW_FILE,
  48                         .otp = QCA988X_HW_1_0_OTP_FILE,
  49                         .board = QCA988X_HW_1_0_BOARD_DATA_FILE,
  50                 },
  51         },
  52         {
  53                 .id = QCA988X_HW_2_0_VERSION,
  54                 .name = "qca988x hw2.0",
  55                 .patch_load_addr = QCA988X_HW_2_0_PATCH_LOAD_ADDR,
  56                 .fw = {
  57                         .dir = QCA988X_HW_2_0_FW_DIR,
  58                         .fw = QCA988X_HW_2_0_FW_FILE,
  59                         .otp = QCA988X_HW_2_0_OTP_FILE,
  60                         .board = QCA988X_HW_2_0_BOARD_DATA_FILE,
  61                 },
  62         },
  63 };
  64
  65 static void ath10k_send_suspend_complete(struct ath10k *ar)
  66 {
  67         ath10k_dbg(ATH10K_DBG_CORE, "%s\n", __func__);
  68
  69         ar->is_target_paused = true;
  70         wake_up(&ar->event_queue);
  71 }
  72
  73 static int ath10k_check_fw_version(struct ath10k *ar)
  74 {
  75         char version[32];
  76
  77         if (ar->fw_version_major >= SUPPORTED_FW_MAJOR &&
  78             ar->fw_version_minor >= SUPPORTED_FW_MINOR &&
  79             ar->fw_version_release >= SUPPORTED_FW_RELEASE &&
  80             ar->fw_version_build >= SUPPORTED_FW_BUILD)
  81                 return 0;
  82
  83         snprintf(version, sizeof(version), "%u.%u.%u.%u",
  84                  SUPPORTED_FW_MAJOR, SUPPORTED_FW_MINOR,
  85                  SUPPORTED_FW_RELEASE, SUPPORTED_FW_BUILD);
  86
  87         ath10k_warn("WARNING: Firmware version %s is not officially supported.\n",
  88                     ar->hw->wiphy->fw_version);
  89         ath10k_warn("Please upgrade to version %s (or newer)\n", version);
  90
  91         return 0;
  92 }
  93
  94 static int ath10k_init_connect_htc(struct ath10k *ar)
  95 {
  96         int status;
  97
  98         status = ath10k_wmi_connect_htc_service(ar);
  99         if (status)
 100                 goto conn_fail;
 101
 102         /* Start HTC */
 103         status = ath10k_htc_start(&ar->htc);
 104         if (status)
 105                 goto conn_fail;
 106
 107         /* Wait for WMI event to be ready */
 108         status = ath10k_wmi_wait_for_service_ready(ar);
 109         if (status <= 0) {
 110                 ath10k_warn("wmi service ready event not received");
 111                 status = -ETIMEDOUT;
 112                 goto timeout;
 113         }
 114
 115         ath10k_dbg(ATH10K_DBG_CORE, "core wmi ready\n");
 116         return 0;
 117
 118 timeout:
 119         ath10k_htc_stop(&ar->htc);
 120 conn_fail:
 121         return status;
 122 }
 123
 124 static int ath10k_init_configure_target(struct ath10k *ar)
 125 {
 126         u32 param_host;
 127         int ret;
 128
 129         /* tell target which HTC version it is used*/
 130         ret = ath10k_bmi_write32(ar, hi_app_host_interest,
 131                                  HTC_PROTOCOL_VERSION);
 132         if (ret) {
 133                 ath10k_err("settings HTC version failed\n");
 134                 return ret;
 135         }
 136
 137         /* set the firmware mode to STA/IBSS/AP */
 138         ret = ath10k_bmi_read32(ar, hi_option_flag, &param_host);
 139         if (ret) {
 140                 ath10k_err("setting firmware mode (1/2) failed\n");
 141                 return ret;
 142         }
 143
 144         /* TODO following parameters need to be re-visited. */
 145         /* num_device */
 146         param_host |= (1 << HI_OPTION_NUM_DEV_SHIFT);
 147         /* Firmware mode */
 148         /* FIXME: Why FW_MODE_AP ??.*/
 149         param_host |= (HI_OPTION_FW_MODE_AP << HI_OPTION_FW_MODE_SHIFT);
 150         /* mac_addr_method */
 151         param_host |= (1 << HI_OPTION_MAC_ADDR_METHOD_SHIFT);
 152         /* firmware_bridge */
 153         param_host |= (0 << HI_OPTION_FW_BRIDGE_SHIFT);
 154         /* fwsubmode */
 155         param_host |= (0 << HI_OPTION_FW_SUBMODE_SHIFT);
 156
 157         ret = ath10k_bmi_write32(ar, hi_option_flag, param_host);
 158         if (ret) {
 159                 ath10k_err("setting firmware mode (2/2) failed\n");
 160                 return ret;
 161         }
 162
 163         /* We do all byte-swapping on the host */
 164         ret = ath10k_bmi_write32(ar, hi_be, 0);
 165         if (ret) {
 166                 ath10k_err("setting host CPU BE mode failed\n");
 167                 return ret;
 168         }
 169
 170         /* FW descriptor/Data swap flags */
 171         ret = ath10k_bmi_write32(ar, hi_fw_swap, 0);
 172
 173         if (ret) {
 174                 ath10k_err("setting FW data/desc swap flags failed\n");
 175                 return ret;
 176         }
 177
 178         return 0;
 179 }
 180
 181 static const struct firmware *ath10k_fetch_fw_file(struct ath10k *ar,
 182                                                    const char *dir,
 183                                                    const char *file)
 184 {
 185         char filename[100];
 186         const struct firmware *fw;
 187         int ret;
 188
 189         if (file == NULL)
 190                 return ERR_PTR(-ENOENT);
 191
 192         if (dir == NULL)
 193                 dir = ".";
 194
 195         snprintf(filename, sizeof(filename), "%s/%s", dir, file);
 196         ret = request_firmware(&fw, filename, ar->dev);
 197         if (ret)
 198                 return ERR_PTR(ret);
 199
 200         return fw;
 201 }
 202
 203 static int ath10k_push_board_ext_data(struct ath10k *ar,
 204                                       const struct firmware *fw)
 205 {
 206         u32 board_data_size = QCA988X_BOARD_DATA_SZ;
 207         u32 board_ext_data_size = QCA988X_BOARD_EXT_DATA_SZ;
 208         u32 board_ext_data_addr;
 209         int ret;
 210
 211         ret = ath10k_bmi_read32(ar, hi_board_ext_data, &board_ext_data_addr);
 212         if (ret) {
 213                 ath10k_err("could not read board ext data addr (%d)\n", ret);
 214                 return ret;
 215         }
 216
 217         ath10k_dbg(ATH10K_DBG_CORE,
 218                    "ath10k: Board extended Data download addr: 0x%x\n",
 219                    board_ext_data_addr);
 220
 221         if (board_ext_data_addr == 0)
 222                 return 0;
 223
 224         if (fw->size != (board_data_size + board_ext_data_size)) {
 225                 ath10k_err("invalid board (ext) data sizes %zu != %d+%d\n",
 226                            fw->size, board_data_size, board_ext_data_size);
 227                 return -EINVAL;
 228         }
 229
 230         ret = ath10k_bmi_write_memory(ar, board_ext_data_addr,
 231                                       fw->data + board_data_size,
 232                                       board_ext_data_size);
 233         if (ret) {
 234                 ath10k_err("could not write board ext data (%d)\n", ret);
 235                 return ret;
 236         }
 237
 238         ret = ath10k_bmi_write32(ar, hi_board_ext_data_config,
 239                                  (board_ext_data_size << 16) | 1);
 240         if (ret) {
 241                 ath10k_err("could not write board ext data bit (%d)\n", ret);
 242                 return ret;
 243         }
 244
 245         return 0;
 246 }
 247
 248 static int ath10k_download_board_data(struct ath10k *ar)
 249 {
 250         const struct firmware *fw = ar->board_data;
 251         u32 board_data_size = QCA988X_BOARD_DATA_SZ;
 252         u32 address;
 253         int ret;
 254
 255         ret = ath10k_push_board_ext_data(ar, fw);
 256         if (ret) {
 257                 ath10k_err("could not push board ext data (%d)\n", ret);
 258                 goto exit;
 259         }
 260
 261         ret = ath10k_bmi_read32(ar, hi_board_data, &address);
 262         if (ret) {
 263                 ath10k_err("could not read board data addr (%d)\n", ret);
 264                 goto exit;
 265         }
 266
 267         ret = ath10k_bmi_write_memory(ar, address, fw->data,
 268                                       min_t(u32, board_data_size, fw->size));
 269         if (ret) {
 270                 ath10k_err("could not write board data (%d)\n", ret);
 271                 goto exit;
 272         }
 273
 274         ret = ath10k_bmi_write32(ar, hi_board_data_initialized, 1);
 275         if (ret) {
 276                 ath10k_err("could not write board data bit (%d)\n", ret);
 277                 goto exit;
 278         }
 279
 280 exit:
 281         return ret;
 282 }
 283
 284 static int ath10k_download_and_run_otp(struct ath10k *ar)
 285 {
 286         const struct firmware *fw = ar->otp;
 287         u32 address = ar->hw_params.patch_load_addr;
 288         u32 exec_param;
 289         int ret;
 290
 291         /* OTP is optional */
 292
 293         if (!ar->otp)
 294                 return 0;
 295
 296         ret = ath10k_bmi_fast_download(ar, address, fw->data, fw->size);
 297         if (ret) {
 298                 ath10k_err("could not write otp (%d)\n", ret);
 299                 goto exit;
 300         }
 301
 302         exec_param = 0;
 303         ret = ath10k_bmi_execute(ar, address, &exec_param);
 304         if (ret) {
 305                 ath10k_err("could not execute otp (%d)\n", ret);
 306                 goto exit;
 307         }
 308
 309 exit:
 310         return ret;
 311 }
 312
 313 static int ath10k_download_fw(struct ath10k *ar)
 314 {
 315         const struct firmware *fw = ar->firmware;
 316         u32 address;
 317         int ret;
 318
 319         address = ar->hw_params.patch_load_addr;
 320
 321         ret = ath10k_bmi_fast_download(ar, address, fw->data, fw->size);
 322         if (ret) {
 323                 ath10k_err("could not write fw (%d)\n", ret);
 324                 goto exit;
 325         }
 326
 327 exit:
 328         return ret;
 329 }
 330
 331 static void ath10k_core_free_firmware_files(struct ath10k *ar)
 332 {
 333         if (ar->board_data && !IS_ERR(ar->board_data))
 334                 release_firmware(ar->board_data);
 335
 336         if (ar->otp && !IS_ERR(ar->otp))
 337                 release_firmware(ar->otp);
 338
 339         if (ar->firmware && !IS_ERR(ar->firmware))
 340                 release_firmware(ar->firmware);
 341
 342         ar->board_data = NULL;
 343         ar->otp = NULL;
 344         ar->firmware = NULL;
 345 }
 346
 347 static int ath10k_core_fetch_firmware_files(struct ath10k *ar)
 348 {
 349         int ret = 0;
 350
 351         if (ar->hw_params.fw.fw == NULL) {
 352                 ath10k_err("firmware file not defined\n");
 353                 return -EINVAL;
 354         }
 355
 356         if (ar->hw_params.fw.board == NULL) {
 357                 ath10k_err("board data file not defined");
 358                 return -EINVAL;
 359         }
 360
 361         ar->board_data = ath10k_fetch_fw_file(ar,
 362                                               ar->hw_params.fw.dir,
 363                                               ar->hw_params.fw.board);
 364         if (IS_ERR(ar->board_data)) {
 365                 ret = PTR_ERR(ar->board_data);
 366                 ath10k_err("could not fetch board data (%d)\n", ret);
 367                 goto err;
 368         }
 369
 370         ar->firmware = ath10k_fetch_fw_file(ar,
 371                                             ar->hw_params.fw.dir,
 372                                             ar->hw_params.fw.fw);
 373         if (IS_ERR(ar->firmware)) {
 374                 ret = PTR_ERR(ar->firmware);
 375                 ath10k_err("could not fetch firmware (%d)\n", ret);
 376                 goto err;
 377         }
 378
 379         /* OTP may be undefined. If so, don't fetch it at all */
 380         if (ar->hw_params.fw.otp == NULL)
 381                 return 0;
 382
 383         ar->otp = ath10k_fetch_fw_file(ar,
 384                                        ar->hw_params.fw.dir,
 385                                        ar->hw_params.fw.otp);
 386         if (IS_ERR(ar->otp)) {
 387                 ret = PTR_ERR(ar->otp);
 388                 ath10k_err("could not fetch otp (%d)\n", ret);
 389                 goto err;
 390         }
 391
 392         return 0;
 393
 394 err:
 395         ath10k_core_free_firmware_files(ar);
 396         return ret;
 397 }
 398
 399 static int ath10k_init_download_firmware(struct ath10k *ar)
 400 {
 401         int ret;
 402
 403         ret = ath10k_download_board_data(ar);
 404         if (ret)
 405                 return ret;
 406
 407         ret = ath10k_download_and_run_otp(ar);
 408         if (ret)
 409                 return ret;
 410
 411         ret = ath10k_download_fw(ar);
 412         if (ret)
 413                 return ret;
 414
 415         return ret;
 416 }
 417
 418 static int ath10k_init_uart(struct ath10k *ar)
 419 {
 420         int ret;
 421
 422         /*
 423          * Explicitly setting UART prints to zero as target turns it on
 424          * based on scratch registers.
 425          */
 426         ret = ath10k_bmi_write32(ar, hi_serial_enable, 0);
 427         if (ret) {
 428                 ath10k_warn("could not disable UART prints (%d)\n", ret);
 429                 return ret;
 430         }
 431
 432         if (!uart_print) {
 433                 ath10k_info("UART prints disabled\n");
 434                 return 0;
 435         }
 436
 437         ret = ath10k_bmi_write32(ar, hi_dbg_uart_txpin, 7);
 438         if (ret) {
 439                 ath10k_warn("could not enable UART prints (%d)\n", ret);
 440                 return ret;
 441         }
 442
 443         ret = ath10k_bmi_write32(ar, hi_serial_enable, 1);
 444         if (ret) {
 445                 ath10k_warn("could not enable UART prints (%d)\n", ret);
 446                 return ret;
 447         }
 448
 449         ath10k_info("UART prints enabled\n");
 450         return 0;
 451 }
 452
 453 static int ath10k_init_hw_params(struct ath10k *ar)
 454 {
 455         const struct ath10k_hw_params *uninitialized_var(hw_params);
 456         int i;
 457
 458         for (i = 0; i < ARRAY_SIZE(ath10k_hw_params_list); i++) {
 459                 hw_params = &ath10k_hw_params_list[i];
 460
 461                 if (hw_params->id == ar->target_version)
 462                         break;
 463         }
 464
 465         if (i == ARRAY_SIZE(ath10k_hw_params_list)) {
 466                 ath10k_err("Unsupported hardware version: 0x%x\n",
 467                            ar->target_version);
 468                 return -EINVAL;
 469         }
 470
 471         ar->hw_params = *hw_params;
 472
 473         ath10k_info("Hardware name %s version 0x%x\n",
 474                     ar->hw_params.name, ar->target_version);
 475
 476         return 0;
 477 }
 478
 479 static void ath10k_core_restart(struct work_struct *work)
 480 {
 481         struct ath10k *ar = container_of(work, struct ath10k, restart_work);
 482
 483         mutex_lock(&ar->conf_mutex);
 484
 485         switch (ar->state) {
 486         case ATH10K_STATE_ON:
 487                 ath10k_halt(ar);
 488                 ar->state = ATH10K_STATE_RESTARTING;
 489                 ieee80211_restart_hw(ar->hw);
 490                 break;
 491         case ATH10K_STATE_OFF:
 492                 /* this can happen if driver is being unloaded */
 493                 ath10k_warn("cannot restart a device that hasn't been started\n");
 494                 break;
 495         case ATH10K_STATE_RESTARTING:
 496         case ATH10K_STATE_RESTARTED:
 497                 ar->state = ATH10K_STATE_WEDGED;
 498                 /* fall through */
 499         case ATH10K_STATE_WEDGED:
 500                 ath10k_warn("device is wedged, will not restart\n");
 501                 break;
 502         }
 503
 504         mutex_unlock(&ar->conf_mutex);
 505 }
 506
 507 struct ath10k *ath10k_core_create(void *hif_priv, struct device *dev,
 508                                   const struct ath10k_hif_ops *hif_ops)
 509 {
 510         struct ath10k *ar;
 511
 512         ar = ath10k_mac_create();
 513         if (!ar)
 514                 return NULL;
 515
 516         ar->ath_common.priv = ar;
 517         ar->ath_common.hw = ar->hw;
 518
 519         ar->p2p = !!ath10k_p2p;
 520         ar->dev = dev;
 521
 522         ar->hif.priv = hif_priv;
 523         ar->hif.ops = hif_ops;
 524
 525         init_completion(&ar->scan.started);
 526         init_completion(&ar->scan.completed);
 527         init_completion(&ar->scan.on_channel);
 528
 529         init_completion(&ar->install_key_done);
 530         init_completion(&ar->vdev_setup_done);
 531
 532         setup_timer(&ar->scan.timeout, ath10k_reset_scan, (unsigned long)ar);
 533
 534         ar->workqueue = create_singlethread_workqueue("ath10k_wq");
 535         if (!ar->workqueue)
 536                 goto err_wq;
 537
 538         mutex_init(&ar->conf_mutex);
 539         spin_lock_init(&ar->data_lock);
 540
 541         INIT_LIST_HEAD(&ar->peers);
 542         init_waitqueue_head(&ar->peer_mapping_wq);
 543
 544         init_completion(&ar->offchan_tx_completed);
 545         INIT_WORK(&ar->offchan_tx_work, ath10k_offchan_tx_work);
 546         skb_queue_head_init(&ar->offchan_tx_queue);
 547
 548         init_waitqueue_head(&ar->event_queue);
 549
 550         INIT_WORK(&ar->restart_work, ath10k_core_restart);
 551
 552         return ar;
 553
 554 err_wq:
 555         ath10k_mac_destroy(ar);
 556         return NULL;
 557 }
 558 EXPORT_SYMBOL(ath10k_core_create);
 559
 560 void ath10k_core_destroy(struct ath10k *ar)
 561 {
 562         flush_workqueue(ar->workqueue);
 563         destroy_workqueue(ar->workqueue);
 564
 565         ath10k_mac_destroy(ar);
 566 }
 567 EXPORT_SYMBOL(ath10k_core_destroy);
 568
 569 int ath10k_core_start(struct ath10k *ar)
 570 {
 571         int status;
 572
 573         ath10k_bmi_start(ar);
 574
 575         if (ath10k_init_configure_target(ar)) {
 576                 status = -EINVAL;
 577                 goto err;
 578         }
 579
 580         status = ath10k_init_download_firmware(ar);
 581         if (status)
 582                 goto err;
 583
 584         status = ath10k_init_uart(ar);
 585         if (status)
 586                 goto err;
 587
 588         ar->htc.htc_ops.target_send_suspend_complete =
 589                 ath10k_send_suspend_complete;
 590
 591         status = ath10k_htc_init(ar);
 592         if (status) {
 593                 ath10k_err("could not init HTC (%d)\n", status);
 594                 goto err;
 595         }
 596
 597         status = ath10k_bmi_done(ar);
 598         if (status)
 599                 goto err;
 600
 601         status = ath10k_wmi_attach(ar);
 602         if (status) {
 603                 ath10k_err("WMI attach failed: %d\n", status);
 604                 goto err;
 605         }
 606
 607         status = ath10k_htc_wait_target(&ar->htc);
 608         if (status)
 609                 goto err_wmi_detach;
 610
 611         status = ath10k_htt_attach(ar);
 612         if (status) {
 613                 ath10k_err("could not attach htt (%d)\n", status);
 614                 goto err_wmi_detach;
 615         }
 616
 617         status = ath10k_init_connect_htc(ar);
 618         if (status)
 619                 goto err_htt_detach;
 620
 621         ath10k_info("firmware %s booted\n", ar->hw->wiphy->fw_version);
 622
 623         status = ath10k_check_fw_version(ar);
 624         if (status)
 625                 goto err_disconnect_htc;
 626
 627         status = ath10k_wmi_cmd_init(ar);
 628         if (status) {
 629                 ath10k_err("could not send WMI init command (%d)\n", status);
 630                 goto err_disconnect_htc;
 631         }
 632
 633         status = ath10k_wmi_wait_for_unified_ready(ar);
 634         if (status <= 0) {
 635                 ath10k_err("wmi unified ready event not received\n");
 636                 status = -ETIMEDOUT;
 637                 goto err_disconnect_htc;
 638         }
 639
 640         status = ath10k_htt_attach_target(&ar->htt);
 641         if (status)
 642                 goto err_disconnect_htc;
 643
 644         ar->free_vdev_map = (1 << TARGET_NUM_VDEVS) - 1;
 645
 646         return 0;
 647
 648 err_disconnect_htc:
 649         ath10k_htc_stop(&ar->htc);
 650 err_htt_detach:
 651         ath10k_htt_detach(&ar->htt);
 652 err_wmi_detach:
 653         ath10k_wmi_detach(ar);
 654 err:
 655         return status;
 656 }
 657 EXPORT_SYMBOL(ath10k_core_start);
 658
 659 void ath10k_core_stop(struct ath10k *ar)
 660 {
 661         ath10k_htc_stop(&ar->htc);
 662         ath10k_htt_detach(&ar->htt);
 663         ath10k_wmi_detach(ar);
 664 }
 665 EXPORT_SYMBOL(ath10k_core_stop);
 666
 667 /* mac80211 manages fw/hw initialization through start/stop hooks. However in
 668  * order to know what hw capabilities should be advertised to mac80211 it is
 669  * necessary to load the firmware (and tear it down immediately since start
 670  * hook will try to init it again) before registering */
 671 static int ath10k_core_probe_fw(struct ath10k *ar)
 672 {
 673         struct bmi_target_info target_info;
 674         int ret = 0;
 675
 676         ret = ath10k_hif_power_up(ar);
 677         if (ret) {
 678                 ath10k_err("could not start pci hif (%d)\n", ret);
 679                 return ret;
 680         }
 681
 682         memset(&target_info, 0, sizeof(target_info));
 683         ret = ath10k_bmi_get_target_info(ar, &target_info);
 684         if (ret) {
 685                 ath10k_err("could not get target info (%d)\n", ret);
 686                 ath10k_hif_power_down(ar);
 687                 return ret;
 688         }
 689
 690         ar->target_version = target_info.version;
 691         ar->hw->wiphy->hw_version = target_info.version;
 692
 693         ret = ath10k_init_hw_params(ar);
 694         if (ret) {
 695                 ath10k_err("could not get hw params (%d)\n", ret);
 696                 ath10k_hif_power_down(ar);
 697                 return ret;
 698         }
 699
 700         ret = ath10k_core_fetch_firmware_files(ar);
 701         if (ret) {
 702                 ath10k_err("could not fetch firmware files (%d)\n", ret);
 703                 ath10k_hif_power_down(ar);
 704                 return ret;
 705         }
 706
 707         ret = ath10k_core_start(ar);
 708         if (ret) {
 709                 ath10k_err("could not init core (%d)\n", ret);
 710                 ath10k_core_free_firmware_files(ar);
 711                 ath10k_hif_power_down(ar);
 712                 return ret;
 713         }
 714
 715         ath10k_core_stop(ar);
 716         ath10k_hif_power_down(ar);
 717         return 0;
 718 }
 719
 720 int ath10k_core_register(struct ath10k *ar)
 721 {
 722         int status;
 723
 724         status = ath10k_core_probe_fw(ar);
 725         if (status) {
 726                 ath10k_err("could not probe fw (%d)\n", status);
 727                 return status;
 728         }
 729
 730         status = ath10k_mac_register(ar);
 731         if (status) {
 732                 ath10k_err("could not register to mac80211 (%d)\n", status);
 733                 goto err_release_fw;
 734         }
 735
 736         status = ath10k_debug_create(ar);
 737         if (status) {
 738                 ath10k_err("unable to initialize debugfs\n");
 739                 goto err_unregister_mac;
 740         }
 741
 742         return 0;
 743
 744 err_unregister_mac:
 745         ath10k_mac_unregister(ar);
 746 err_release_fw:
 747         ath10k_core_free_firmware_files(ar);
 748         return status;
 749 }
 750 EXPORT_SYMBOL(ath10k_core_register);
 751
 752 void ath10k_core_unregister(struct ath10k *ar)
 753 {
 754         /* We must unregister from mac80211 before we stop HTC and HIF.
 755          * Otherwise we will fail to submit commands to FW and mac80211 will be
 756          * unhappy about callback failures. */
 757         ath10k_mac_unregister(ar);
 758         ath10k_core_free_firmware_files(ar);
 759 }
 760 EXPORT_SYMBOL(ath10k_core_unregister);
 761
 762 MODULE_AUTHOR("Qualcomm Atheros");
 763 MODULE_DESCRIPTION("Core module for QCA988X PCIe devices.");
 764 MODULE_LICENSE("Dual BSD/GPL");