kernel/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 #include <linux/of.h>
  21
  22 #include "core.h"
  23 #include "mac.h"
  24 #include "htc.h"
  25 #include "hif.h"
  26 #include "wmi.h"
  27 #include "bmi.h"
  28 #include "debug.h"
  29 #include "htt.h"
  30 #include "testmode.h"
  31 #include "wmi-ops.h"
  32
  33 unsigned int ath10k_debug_mask;
  34 static bool uart_print;
  35 static bool skip_otp;
  36
  37 module_param_named(debug_mask, ath10k_debug_mask, uint, 0644);
  38 module_param(uart_print, bool, 0644);
  39 module_param(skip_otp, bool, 0644);
  40
  41 MODULE_PARM_DESC(debug_mask, "Debugging mask");
  42 MODULE_PARM_DESC(uart_print, "Uart target debugging");
  43 MODULE_PARM_DESC(skip_otp, "Skip otp failure for calibration in testmode");
  44
  45 static const struct ath10k_hw_params ath10k_hw_params_list[] = {
  46         {
  47                 .id = QCA988X_HW_2_0_VERSION,
  48                 .name = "qca988x hw2.0",
  49                 .patch_load_addr = QCA988X_HW_2_0_PATCH_LOAD_ADDR,
  50                 .uart_pin = 7,
  51                 .fw = {
  52                         .dir = QCA988X_HW_2_0_FW_DIR,
  53                         .fw = QCA988X_HW_2_0_FW_FILE,
  54                         .otp = QCA988X_HW_2_0_OTP_FILE,
  55                         .board = QCA988X_HW_2_0_BOARD_DATA_FILE,
  56                         .board_size = QCA988X_BOARD_DATA_SZ,
  57                         .board_ext_size = QCA988X_BOARD_EXT_DATA_SZ,
  58                 },
  59         },
  60         {
  61                 .id = QCA6174_HW_2_1_VERSION,
  62                 .name = "qca6174 hw2.1",
  63                 .patch_load_addr = QCA6174_HW_2_1_PATCH_LOAD_ADDR,
  64                 .uart_pin = 6,
  65                 .fw = {
  66                         .dir = QCA6174_HW_2_1_FW_DIR,
  67                         .fw = QCA6174_HW_2_1_FW_FILE,
  68                         .otp = QCA6174_HW_2_1_OTP_FILE,
  69                         .board = QCA6174_HW_2_1_BOARD_DATA_FILE,
  70                         .board_size = QCA6174_BOARD_DATA_SZ,
  71                         .board_ext_size = QCA6174_BOARD_EXT_DATA_SZ,
  72                 },
  73         },
  74         {
  75                 .id = QCA6174_HW_3_0_VERSION,
  76                 .name = "qca6174 hw3.0",
  77                 .patch_load_addr = QCA6174_HW_3_0_PATCH_LOAD_ADDR,
  78                 .uart_pin = 6,
  79                 .fw = {
  80                         .dir = QCA6174_HW_3_0_FW_DIR,
  81                         .fw = QCA6174_HW_3_0_FW_FILE,
  82                         .otp = QCA6174_HW_3_0_OTP_FILE,
  83                         .board = QCA6174_HW_3_0_BOARD_DATA_FILE,
  84                         .board_size = QCA6174_BOARD_DATA_SZ,
  85                         .board_ext_size = QCA6174_BOARD_EXT_DATA_SZ,
  86                 },
  87         },
  88         {
  89                 .id = QCA6174_HW_3_2_VERSION,
  90                 .name = "qca6174 hw3.2",
  91                 .patch_load_addr = QCA6174_HW_3_0_PATCH_LOAD_ADDR,
  92                 .uart_pin = 6,
  93                 .fw = {
  94                         /* uses same binaries as hw3.0 */
  95                         .dir = QCA6174_HW_3_0_FW_DIR,
  96                         .fw = QCA6174_HW_3_0_FW_FILE,
  97                         .otp = QCA6174_HW_3_0_OTP_FILE,
  98                         .board = QCA6174_HW_3_0_BOARD_DATA_FILE,
  99                         .board_size = QCA6174_BOARD_DATA_SZ,
 100                         .board_ext_size = QCA6174_BOARD_EXT_DATA_SZ,
 101                 },
 102         },
 103 };
 104
 105 static void ath10k_send_suspend_complete(struct ath10k *ar)
 106 {
 107         ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot suspend complete\n");
 108
 109         complete(&ar->target_suspend);
 110 }
 111
 112 static int ath10k_init_configure_target(struct ath10k *ar)
 113 {
 114         u32 param_host;
 115         int ret;
 116
 117         /* tell target which HTC version it is used*/
 118         ret = ath10k_bmi_write32(ar, hi_app_host_interest,
 119                                  HTC_PROTOCOL_VERSION);
 120         if (ret) {
 121                 ath10k_err(ar, "settings HTC version failed\n");
 122                 return ret;
 123         }
 124
 125         /* set the firmware mode to STA/IBSS/AP */
 126         ret = ath10k_bmi_read32(ar, hi_option_flag, &param_host);
 127         if (ret) {
 128                 ath10k_err(ar, "setting firmware mode (1/2) failed\n");
 129                 return ret;
 130         }
 131
 132         /* TODO following parameters need to be re-visited. */
 133         /* num_device */
 134         param_host |= (1 << HI_OPTION_NUM_DEV_SHIFT);
 135         /* Firmware mode */
 136         /* FIXME: Why FW_MODE_AP ??.*/
 137         param_host |= (HI_OPTION_FW_MODE_AP << HI_OPTION_FW_MODE_SHIFT);
 138         /* mac_addr_method */
 139         param_host |= (1 << HI_OPTION_MAC_ADDR_METHOD_SHIFT);
 140         /* firmware_bridge */
 141         param_host |= (0 << HI_OPTION_FW_BRIDGE_SHIFT);
 142         /* fwsubmode */
 143         param_host |= (0 << HI_OPTION_FW_SUBMODE_SHIFT);
 144
 145         ret = ath10k_bmi_write32(ar, hi_option_flag, param_host);
 146         if (ret) {
 147                 ath10k_err(ar, "setting firmware mode (2/2) failed\n");
 148                 return ret;
 149         }
 150
 151         /* We do all byte-swapping on the host */
 152         ret = ath10k_bmi_write32(ar, hi_be, 0);
 153         if (ret) {
 154                 ath10k_err(ar, "setting host CPU BE mode failed\n");
 155                 return ret;
 156         }
 157
 158         /* FW descriptor/Data swap flags */
 159         ret = ath10k_bmi_write32(ar, hi_fw_swap, 0);
 160
 161         if (ret) {
 162                 ath10k_err(ar, "setting FW data/desc swap flags failed\n");
 163                 return ret;
 164         }
 165
 166         return 0;
 167 }
 168
 169 static const struct firmware *ath10k_fetch_fw_file(struct ath10k *ar,
 170                                                    const char *dir,
 171                                                    const char *file)
 172 {
 173         char filename[100];
 174         const struct firmware *fw;
 175         int ret;
 176
 177         if (file == NULL)
 178                 return ERR_PTR(-ENOENT);
 179
 180         if (dir == NULL)
 181                 dir = ".";
 182
 183         snprintf(filename, sizeof(filename), "%s/%s", dir, file);
 184         ret = request_firmware(&fw, filename, ar->dev);
 185         if (ret)
 186                 return ERR_PTR(ret);
 187
 188         return fw;
 189 }
 190
 191 static int ath10k_push_board_ext_data(struct ath10k *ar, const void *data,
 192                                       size_t data_len)
 193 {
 194         u32 board_data_size = ar->hw_params.fw.board_size;
 195         u32 board_ext_data_size = ar->hw_params.fw.board_ext_size;
 196         u32 board_ext_data_addr;
 197         int ret;
 198
 199         ret = ath10k_bmi_read32(ar, hi_board_ext_data, &board_ext_data_addr);
 200         if (ret) {
 201                 ath10k_err(ar, "could not read board ext data addr (%d)\n",
 202                            ret);
 203                 return ret;
 204         }
 205
 206         ath10k_dbg(ar, ATH10K_DBG_BOOT,
 207                    "boot push board extended data addr 0x%x\n",
 208                    board_ext_data_addr);
 209
 210         if (board_ext_data_addr == 0)
 211                 return 0;
 212
 213         if (data_len != (board_data_size + board_ext_data_size)) {
 214                 ath10k_err(ar, "invalid board (ext) data sizes %zu != %d+%d\n",
 215                            data_len, board_data_size, board_ext_data_size);
 216                 return -EINVAL;
 217         }
 218
 219         ret = ath10k_bmi_write_memory(ar, board_ext_data_addr,
 220                                       data + board_data_size,
 221                                       board_ext_data_size);
 222         if (ret) {
 223                 ath10k_err(ar, "could not write board ext data (%d)\n", ret);
 224                 return ret;
 225         }
 226
 227         ret = ath10k_bmi_write32(ar, hi_board_ext_data_config,
 228                                  (board_ext_data_size << 16) | 1);
 229         if (ret) {
 230                 ath10k_err(ar, "could not write board ext data bit (%d)\n",
 231                            ret);
 232                 return ret;
 233         }
 234
 235         return 0;
 236 }
 237
 238 static int ath10k_download_board_data(struct ath10k *ar, const void *data,
 239                                       size_t data_len)
 240 {
 241         u32 board_data_size = ar->hw_params.fw.board_size;
 242         u32 address;
 243         int ret;
 244
 245         ret = ath10k_push_board_ext_data(ar, data, data_len);
 246         if (ret) {
 247                 ath10k_err(ar, "could not push board ext data (%d)\n", ret);
 248                 goto exit;
 249         }
 250
 251         ret = ath10k_bmi_read32(ar, hi_board_data, &address);
 252         if (ret) {
 253                 ath10k_err(ar, "could not read board data addr (%d)\n", ret);
 254                 goto exit;
 255         }
 256
 257         ret = ath10k_bmi_write_memory(ar, address, data,
 258                                       min_t(u32, board_data_size,
 259                                             data_len));
 260         if (ret) {
 261                 ath10k_err(ar, "could not write board data (%d)\n", ret);
 262                 goto exit;
 263         }
 264
 265         ret = ath10k_bmi_write32(ar, hi_board_data_initialized, 1);
 266         if (ret) {
 267                 ath10k_err(ar, "could not write board data bit (%d)\n", ret);
 268                 goto exit;
 269         }
 270
 271 exit:
 272         return ret;
 273 }
 274
 275 static int ath10k_download_cal_file(struct ath10k *ar)
 276 {
 277         int ret;
 278
 279         if (!ar->cal_file)
 280                 return -ENOENT;
 281
 282         if (IS_ERR(ar->cal_file))
 283                 return PTR_ERR(ar->cal_file);
 284
 285         ret = ath10k_download_board_data(ar, ar->cal_file->data,
 286                                          ar->cal_file->size);
 287         if (ret) {
 288                 ath10k_err(ar, "failed to download cal_file data: %d\n", ret);
 289                 return ret;
 290         }
 291
 292         ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot cal file downloaded\n");
 293
 294         return 0;
 295 }
 296
 297 static int ath10k_download_cal_dt(struct ath10k *ar)
 298 {
 299         struct device_node *node;
 300         int data_len;
 301         void *data;
 302         int ret;
 303
 304         node = ar->dev->of_node;
 305         if (!node)
 306                 /* Device Tree is optional, don't print any warnings if
 307                  * there's no node for ath10k.
 308                  */
 309                 return -ENOENT;
 310
 311         if (!of_get_property(node, "qcom,ath10k-calibration-data",
 312                              &data_len)) {
 313                 /* The calibration data node is optional */
 314                 return -ENOENT;
 315         }
 316
 317         if (data_len != QCA988X_CAL_DATA_LEN) {
 318                 ath10k_warn(ar, "invalid calibration data length in DT: %d\n",
 319                             data_len);
 320                 ret = -EMSGSIZE;
 321                 goto out;
 322         }
 323
 324         data = kmalloc(data_len, GFP_KERNEL);
 325         if (!data) {
 326                 ret = -ENOMEM;
 327                 goto out;
 328         }
 329
 330         ret = of_property_read_u8_array(node, "qcom,ath10k-calibration-data",
 331                                         data, data_len);
 332         if (ret) {
 333                 ath10k_warn(ar, "failed to read calibration data from DT: %d\n",
 334                             ret);
 335                 goto out_free;
 336         }
 337
 338         ret = ath10k_download_board_data(ar, data, data_len);
 339         if (ret) {
 340                 ath10k_warn(ar, "failed to download calibration data from Device Tree: %d\n",
 341                             ret);
 342                 goto out_free;
 343         }
 344
 345         ret = 0;
 346
 347 out_free:
 348         kfree(data);
 349
 350 out:
 351         return ret;
 352 }
 353
 354 static int ath10k_download_and_run_otp(struct ath10k *ar)
 355 {
 356         u32 result, address = ar->hw_params.patch_load_addr;
 357         int ret;
 358
 359         ret = ath10k_download_board_data(ar, ar->board_data, ar->board_len);
 360         if (ret) {
 361                 ath10k_err(ar, "failed to download board data: %d\n", ret);
 362                 return ret;
 363         }
 364
 365         /* OTP is optional */
 366
 367         if (!ar->otp_data || !ar->otp_len) {
 368                 ath10k_warn(ar, "Not running otp, calibration will be incorrect (otp-data %p otp_len %zd)!\n",
 369                             ar->otp_data, ar->otp_len);
 370                 return 0;
 371         }
 372
 373         ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot upload otp to 0x%x len %zd\n",
 374                    address, ar->otp_len);
 375
 376         ret = ath10k_bmi_fast_download(ar, address, ar->otp_data, ar->otp_len);
 377         if (ret) {
 378                 ath10k_err(ar, "could not write otp (%d)\n", ret);
 379                 return ret;
 380         }
 381
 382         ret = ath10k_bmi_execute(ar, address, 0, &result);
 383         if (ret) {
 384                 ath10k_err(ar, "could not execute otp (%d)\n", ret);
 385                 return ret;
 386         }
 387
 388         ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot otp execute result %d\n", result);
 389
 390         if (!skip_otp && result != 0) {
 391                 ath10k_err(ar, "otp calibration failed: %d", result);
 392                 return -EINVAL;
 393         }
 394
 395         return 0;
 396 }
 397
 398 static int ath10k_download_fw(struct ath10k *ar, enum ath10k_firmware_mode mode)
 399 {
 400         u32 address, data_len;
 401         const char *mode_name;
 402         const void *data;
 403         int ret;
 404
 405         address = ar->hw_params.patch_load_addr;
 406
 407         switch (mode) {
 408         case ATH10K_FIRMWARE_MODE_NORMAL:
 409                 data = ar->firmware_data;
 410                 data_len = ar->firmware_len;
 411                 mode_name = "normal";
 412                 break;
 413         case ATH10K_FIRMWARE_MODE_UTF:
 414                 data = ar->testmode.utf->data;
 415                 data_len = ar->testmode.utf->size;
 416                 mode_name = "utf";
 417                 break;
 418         default:
 419                 ath10k_err(ar, "unknown firmware mode: %d\n", mode);
 420                 return -EINVAL;
 421         }
 422
 423         ath10k_dbg(ar, ATH10K_DBG_BOOT,
 424                    "boot uploading firmware image %p len %d mode %s\n",
 425                    data, data_len, mode_name);
 426
 427         ret = ath10k_bmi_fast_download(ar, address, data, data_len);
 428         if (ret) {
 429                 ath10k_err(ar, "failed to download %s firmware: %d\n",
 430                            mode_name, ret);
 431                 return ret;
 432         }
 433
 434         return ret;
 435 }
 436
 437 static void ath10k_core_free_firmware_files(struct ath10k *ar)
 438 {
 439         if (!IS_ERR(ar->board))
 440                 release_firmware(ar->board);
 441
 442         if (!IS_ERR(ar->otp))
 443                 release_firmware(ar->otp);
 444
 445         if (!IS_ERR(ar->firmware))
 446                 release_firmware(ar->firmware);
 447
 448         if (!IS_ERR(ar->cal_file))
 449                 release_firmware(ar->cal_file);
 450
 451         ar->board = NULL;
 452         ar->board_data = NULL;
 453         ar->board_len = 0;
 454
 455         ar->otp = NULL;
 456         ar->otp_data = NULL;
 457         ar->otp_len = 0;
 458
 459         ar->firmware = NULL;
 460         ar->firmware_data = NULL;
 461         ar->firmware_len = 0;
 462
 463         ar->cal_file = NULL;
 464 }
 465
 466 static int ath10k_fetch_cal_file(struct ath10k *ar)
 467 {
 468         char filename[100];
 469
 470         /* cal-<bus>-<id>.bin */
 471         scnprintf(filename, sizeof(filename), "cal-%s-%s.bin",
 472                   ath10k_bus_str(ar->hif.bus), dev_name(ar->dev));
 473
 474         ar->cal_file = ath10k_fetch_fw_file(ar, ATH10K_FW_DIR, filename);
 475         if (IS_ERR(ar->cal_file))
 476                 /* calibration file is optional, don't print any warnings */
 477                 return PTR_ERR(ar->cal_file);
 478
 479         ath10k_dbg(ar, ATH10K_DBG_BOOT, "found calibration file %s/%s\n",
 480                    ATH10K_FW_DIR, filename);
 481
 482         return 0;
 483 }
 484
 485 static int ath10k_core_fetch_firmware_api_1(struct ath10k *ar)
 486 {
 487         int ret = 0;
 488
 489         if (ar->hw_params.fw.fw == NULL) {
 490                 ath10k_err(ar, "firmware file not defined\n");
 491                 return -EINVAL;
 492         }
 493
 494         if (ar->hw_params.fw.board == NULL) {
 495                 ath10k_err(ar, "board data file not defined");
 496                 return -EINVAL;
 497         }
 498
 499         ar->board = ath10k_fetch_fw_file(ar,
 500                                          ar->hw_params.fw.dir,
 501                                          ar->hw_params.fw.board);
 502         if (IS_ERR(ar->board)) {
 503                 ret = PTR_ERR(ar->board);
 504                 ath10k_err(ar, "could not fetch board data (%d)\n", ret);
 505                 goto err;
 506         }
 507
 508         ar->board_data = ar->board->data;
 509         ar->board_len = ar->board->size;
 510
 511         ar->firmware = ath10k_fetch_fw_file(ar,
 512                                             ar->hw_params.fw.dir,
 513                                             ar->hw_params.fw.fw);
 514         if (IS_ERR(ar->firmware)) {
 515                 ret = PTR_ERR(ar->firmware);
 516                 ath10k_err(ar, "could not fetch firmware (%d)\n", ret);
 517                 goto err;
 518         }
 519
 520         ar->firmware_data = ar->firmware->data;
 521         ar->firmware_len = ar->firmware->size;
 522
 523         /* OTP may be undefined. If so, don't fetch it at all */
 524         if (ar->hw_params.fw.otp == NULL)
 525                 return 0;
 526
 527         ar->otp = ath10k_fetch_fw_file(ar,
 528                                        ar->hw_params.fw.dir,
 529                                        ar->hw_params.fw.otp);
 530         if (IS_ERR(ar->otp)) {
 531                 ret = PTR_ERR(ar->otp);
 532                 ath10k_err(ar, "could not fetch otp (%d)\n", ret);
 533                 goto err;
 534         }
 535
 536         ar->otp_data = ar->otp->data;
 537         ar->otp_len = ar->otp->size;
 538
 539         return 0;
 540
 541 err:
 542         ath10k_core_free_firmware_files(ar);
 543         return ret;
 544 }
 545
 546 static int ath10k_core_fetch_firmware_api_n(struct ath10k *ar, const char *name)
 547 {
 548         size_t magic_len, len, ie_len;
 549         int ie_id, i, index, bit, ret;
 550         struct ath10k_fw_ie *hdr;
 551         const u8 *data;
 552         __le32 *timestamp, *version;
 553
 554         /* first fetch the firmware file (firmware-*.bin) */
 555         ar->firmware = ath10k_fetch_fw_file(ar, ar->hw_params.fw.dir, name);
 556         if (IS_ERR(ar->firmware)) {
 557                 ath10k_err(ar, "could not fetch firmware file '%s/%s': %ld\n",
 558                            ar->hw_params.fw.dir, name, PTR_ERR(ar->firmware));
 559                 return PTR_ERR(ar->firmware);
 560         }
 561
 562         data = ar->firmware->data;
 563         len = ar->firmware->size;
 564
 565         /* magic also includes the null byte, check that as well */
 566         magic_len = strlen(ATH10K_FIRMWARE_MAGIC) + 1;
 567
 568         if (len < magic_len) {
 569                 ath10k_err(ar, "firmware file '%s/%s' too small to contain magic: %zu\n",
 570                            ar->hw_params.fw.dir, name, len);
 571                 ret = -EINVAL;
 572                 goto err;
 573         }
 574
 575         if (memcmp(data, ATH10K_FIRMWARE_MAGIC, magic_len) != 0) {
 576                 ath10k_err(ar, "invalid firmware magic\n");
 577                 ret = -EINVAL;
 578                 goto err;
 579         }
 580
 581         /* jump over the padding */
 582         magic_len = ALIGN(magic_len, 4);
 583
 584         len -= magic_len;
 585         data += magic_len;
 586
 587         /* loop elements */
 588         while (len > sizeof(struct ath10k_fw_ie)) {
 589                 hdr = (struct ath10k_fw_ie *)data;
 590
 591                 ie_id = le32_to_cpu(hdr->id);
 592                 ie_len = le32_to_cpu(hdr->len);
 593
 594                 len -= sizeof(*hdr);
 595                 data += sizeof(*hdr);
 596
 597                 if (len < ie_len) {
 598                         ath10k_err(ar, "invalid length for FW IE %d (%zu < %zu)\n",
 599                                    ie_id, len, ie_len);
 600                         ret = -EINVAL;
 601                         goto err;
 602                 }
 603
 604                 switch (ie_id) {
 605                 case ATH10K_FW_IE_FW_VERSION:
 606                         if (ie_len > sizeof(ar->hw->wiphy->fw_version) - 1)
 607                                 break;
 608
 609                         memcpy(ar->hw->wiphy->fw_version, data, ie_len);
 610                         ar->hw->wiphy->fw_version[ie_len] = '\0';
 611
 612                         ath10k_dbg(ar, ATH10K_DBG_BOOT,
 613                                    "found fw version %s\n",
 614                                     ar->hw->wiphy->fw_version);
 615                         break;
 616                 case ATH10K_FW_IE_TIMESTAMP:
 617                         if (ie_len != sizeof(u32))
 618                                 break;
 619
 620                         timestamp = (__le32 *)data;
 621
 622                         ath10k_dbg(ar, ATH10K_DBG_BOOT, "found fw timestamp %d\n",
 623                                    le32_to_cpup(timestamp));
 624                         break;
 625                 case ATH10K_FW_IE_FEATURES:
 626                         ath10k_dbg(ar, ATH10K_DBG_BOOT,
 627                                    "found firmware features ie (%zd B)\n",
 628                                    ie_len);
 629
 630                         for (i = 0; i < ATH10K_FW_FEATURE_COUNT; i++) {
 631                                 index = i / 8;
 632                                 bit = i % 8;
 633
 634                                 if (index == ie_len)
 635                                         break;
 636
 637                                 if (data[index] & (1 << bit)) {
 638                                         ath10k_dbg(ar, ATH10K_DBG_BOOT,
 639                                                    "Enabling feature bit: %i\n",
 640                                                    i);
 641                                         __set_bit(i, ar->fw_features);
 642                                 }
 643                         }
 644
 645                         ath10k_dbg_dump(ar, ATH10K_DBG_BOOT, "features", "",
 646                                         ar->fw_features,
 647                                         sizeof(ar->fw_features));
 648                         break;
 649                 case ATH10K_FW_IE_FW_IMAGE:
 650                         ath10k_dbg(ar, ATH10K_DBG_BOOT,
 651                                    "found fw image ie (%zd B)\n",
 652                                    ie_len);
 653
 654                         ar->firmware_data = data;
 655                         ar->firmware_len = ie_len;
 656
 657                         break;
 658                 case ATH10K_FW_IE_OTP_IMAGE:
 659                         ath10k_dbg(ar, ATH10K_DBG_BOOT,
 660                                    "found otp image ie (%zd B)\n",
 661                                    ie_len);
 662
 663                         ar->otp_data = data;
 664                         ar->otp_len = ie_len;
 665
 666                         break;
 667                 case ATH10K_FW_IE_WMI_OP_VERSION:
 668                         if (ie_len != sizeof(u32))
 669                                 break;
 670
 671                         version = (__le32 *)data;
 672
 673                         ar->wmi.op_version = le32_to_cpup(version);
 674
 675                         ath10k_dbg(ar, ATH10K_DBG_BOOT, "found fw ie wmi op version %d\n",
 676                                    ar->wmi.op_version);
 677                         break;
 678                 default:
 679                         ath10k_warn(ar, "Unknown FW IE: %u\n",
 680                                     le32_to_cpu(hdr->id));
 681                         break;
 682                 }
 683
 684                 /* jump over the padding */
 685                 ie_len = ALIGN(ie_len, 4);
 686
 687                 len -= ie_len;
 688                 data += ie_len;
 689         }
 690
 691         if (!ar->firmware_data || !ar->firmware_len) {
 692                 ath10k_warn(ar, "No ATH10K_FW_IE_FW_IMAGE found from '%s/%s', skipping\n",
 693                             ar->hw_params.fw.dir, name);
 694                 ret = -ENOMEDIUM;
 695                 goto err;
 696         }
 697
 698         /* now fetch the board file */
 699         if (ar->hw_params.fw.board == NULL) {
 700                 ath10k_err(ar, "board data file not defined");
 701                 ret = -EINVAL;
 702                 goto err;
 703         }
 704
 705         ar->board = ath10k_fetch_fw_file(ar,
 706                                          ar->hw_params.fw.dir,
 707                                          ar->hw_params.fw.board);
 708         if (IS_ERR(ar->board)) {
 709                 ret = PTR_ERR(ar->board);
 710                 ath10k_err(ar, "could not fetch board data '%s/%s' (%d)\n",
 711                            ar->hw_params.fw.dir, ar->hw_params.fw.board,
 712                            ret);
 713                 goto err;
 714         }
 715
 716         ar->board_data = ar->board->data;
 717         ar->board_len = ar->board->size;
 718
 719         return 0;
 720
 721 err:
 722         ath10k_core_free_firmware_files(ar);
 723         return ret;
 724 }
 725
 726 static int ath10k_core_fetch_firmware_files(struct ath10k *ar)
 727 {
 728         int ret;
 729
 730         /* calibration file is optional, don't check for any errors */
 731         ath10k_fetch_cal_file(ar);
 732
 733         ar->fw_api = 4;
 734         ath10k_dbg(ar, ATH10K_DBG_BOOT, "trying fw api %d\n", ar->fw_api);
 735
 736         ret = ath10k_core_fetch_firmware_api_n(ar, ATH10K_FW_API4_FILE);
 737         if (ret == 0)
 738                 goto success;
 739
 740         ar->fw_api = 3;
 741         ath10k_dbg(ar, ATH10K_DBG_BOOT, "trying fw api %d\n", ar->fw_api);
 742
 743         ret = ath10k_core_fetch_firmware_api_n(ar, ATH10K_FW_API3_FILE);
 744         if (ret == 0)
 745                 goto success;
 746
 747         ar->fw_api = 2;
 748         ath10k_dbg(ar, ATH10K_DBG_BOOT, "trying fw api %d\n", ar->fw_api);
 749
 750         ret = ath10k_core_fetch_firmware_api_n(ar, ATH10K_FW_API2_FILE);
 751         if (ret == 0)
 752                 goto success;
 753
 754         ar->fw_api = 1;
 755         ath10k_dbg(ar, ATH10K_DBG_BOOT, "trying fw api %d\n", ar->fw_api);
 756
 757         ret = ath10k_core_fetch_firmware_api_1(ar);
 758         if (ret)
 759                 return ret;
 760
 761 success:
 762         ath10k_dbg(ar, ATH10K_DBG_BOOT, "using fw api %d\n", ar->fw_api);
 763
 764         return 0;
 765 }
 766
 767 static int ath10k_download_cal_data(struct ath10k *ar)
 768 {
 769         int ret;
 770
 771         ret = ath10k_download_cal_file(ar);
 772         if (ret == 0) {
 773                 ar->cal_mode = ATH10K_CAL_MODE_FILE;
 774                 goto done;
 775         }
 776
 777         ath10k_dbg(ar, ATH10K_DBG_BOOT,
 778                    "boot did not find a calibration file, try DT next: %d\n",
 779                    ret);
 780
 781         ret = ath10k_download_cal_dt(ar);
 782         if (ret == 0) {
 783                 ar->cal_mode = ATH10K_CAL_MODE_DT;
 784                 goto done;
 785         }
 786
 787         ath10k_dbg(ar, ATH10K_DBG_BOOT,
 788                    "boot did not find DT entry, try OTP next: %d\n",
 789                    ret);
 790
 791         ret = ath10k_download_and_run_otp(ar);
 792         if (ret) {
 793                 ath10k_err(ar, "failed to run otp: %d\n", ret);
 794                 return ret;
 795         }
 796
 797         ar->cal_mode = ATH10K_CAL_MODE_OTP;
 798
 799 done:
 800         ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot using calibration mode %s\n",
 801                    ath10k_cal_mode_str(ar->cal_mode));
 802         return 0;
 803 }
 804
 805 static int ath10k_init_uart(struct ath10k *ar)
 806 {
 807         int ret;
 808
 809         /*
 810          * Explicitly setting UART prints to zero as target turns it on
 811          * based on scratch registers.
 812          */
 813         ret = ath10k_bmi_write32(ar, hi_serial_enable, 0);
 814         if (ret) {
 815                 ath10k_warn(ar, "could not disable UART prints (%d)\n", ret);
 816                 return ret;
 817         }
 818
 819         if (!uart_print)
 820                 return 0;
 821
 822         ret = ath10k_bmi_write32(ar, hi_dbg_uart_txpin, ar->hw_params.uart_pin);
 823         if (ret) {
 824                 ath10k_warn(ar, "could not enable UART prints (%d)\n", ret);
 825                 return ret;
 826         }
 827
 828         ret = ath10k_bmi_write32(ar, hi_serial_enable, 1);
 829         if (ret) {
 830                 ath10k_warn(ar, "could not enable UART prints (%d)\n", ret);
 831                 return ret;
 832         }
 833
 834         /* Set the UART baud rate to 19200. */
 835         ret = ath10k_bmi_write32(ar, hi_desired_baud_rate, 19200);
 836         if (ret) {
 837                 ath10k_warn(ar, "could not set the baud rate (%d)\n", ret);
 838                 return ret;
 839         }
 840
 841         ath10k_info(ar, "UART prints enabled\n");
 842         return 0;
 843 }
 844
 845 static int ath10k_init_hw_params(struct ath10k *ar)
 846 {
 847         const struct ath10k_hw_params *uninitialized_var(hw_params);
 848         int i;
 849
 850         for (i = 0; i < ARRAY_SIZE(ath10k_hw_params_list); i++) {
 851                 hw_params = &ath10k_hw_params_list[i];
 852
 853                 if (hw_params->id == ar->target_version)
 854                         break;
 855         }
 856
 857         if (i == ARRAY_SIZE(ath10k_hw_params_list)) {
 858                 ath10k_err(ar, "Unsupported hardware version: 0x%x\n",
 859                            ar->target_version);
 860                 return -EINVAL;
 861         }
 862
 863         ar->hw_params = *hw_params;
 864
 865         ath10k_dbg(ar, ATH10K_DBG_BOOT, "Hardware name %s version 0x%x\n",
 866                    ar->hw_params.name, ar->target_version);
 867
 868         return 0;
 869 }
 870
 871 static void ath10k_core_restart(struct work_struct *work)
 872 {
 873         struct ath10k *ar = container_of(work, struct ath10k, restart_work);
 874
 875         set_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags);
 876
 877         /* Place a barrier to make sure the compiler doesn't reorder
 878          * CRASH_FLUSH and calling other functions.
 879          */
 880         barrier();
 881
 882         ieee80211_stop_queues(ar->hw);
 883         ath10k_drain_tx(ar);
 884         complete_all(&ar->scan.started);
 885         complete_all(&ar->scan.completed);
 886         complete_all(&ar->scan.on_channel);
 887         complete_all(&ar->offchan_tx_completed);
 888         complete_all(&ar->install_key_done);
 889         complete_all(&ar->vdev_setup_done);
 890         complete_all(&ar->thermal.wmi_sync);
 891         wake_up(&ar->htt.empty_tx_wq);
 892         wake_up(&ar->wmi.tx_credits_wq);
 893         wake_up(&ar->peer_mapping_wq);
 894
 895         mutex_lock(&ar->conf_mutex);
 896
 897         switch (ar->state) {
 898         case ATH10K_STATE_ON:
 899                 ar->state = ATH10K_STATE_RESTARTING;
 900                 ath10k_hif_stop(ar);
 901                 ath10k_scan_finish(ar);
 902                 ieee80211_restart_hw(ar->hw);
 903                 break;
 904         case ATH10K_STATE_OFF:
 905                 /* this can happen if driver is being unloaded
 906                  * or if the crash happens during FW probing */
 907                 ath10k_warn(ar, "cannot restart a device that hasn't been started\n");
 908                 break;
 909         case ATH10K_STATE_RESTARTING:
 910                 /* hw restart might be requested from multiple places */
 911                 break;
 912         case ATH10K_STATE_RESTARTED:
 913                 ar->state = ATH10K_STATE_WEDGED;
 914                 /* fall through */
 915         case ATH10K_STATE_WEDGED:
 916                 ath10k_warn(ar, "device is wedged, will not restart\n");
 917                 break;
 918         case ATH10K_STATE_UTF:
 919                 ath10k_warn(ar, "firmware restart in UTF mode not supported\n");
 920                 break;
 921         }
 922
 923         mutex_unlock(&ar->conf_mutex);
 924 }
 925
 926 static int ath10k_core_init_firmware_features(struct ath10k *ar)
 927 {
 928         if (test_bit(ATH10K_FW_FEATURE_WMI_10_2, ar->fw_features) &&
 929             !test_bit(ATH10K_FW_FEATURE_WMI_10X, ar->fw_features)) {
 930                 ath10k_err(ar, "feature bits corrupted: 10.2 feature requires 10.x feature to be set as well");
 931                 return -EINVAL;
 932         }
 933
 934         if (ar->wmi.op_version >= ATH10K_FW_WMI_OP_VERSION_MAX) {
 935                 ath10k_err(ar, "unsupported WMI OP version (max %d): %d\n",
 936                            ATH10K_FW_WMI_OP_VERSION_MAX, ar->wmi.op_version);
 937                 return -EINVAL;
 938         }
 939
 940         /* Backwards compatibility for firmwares without
 941          * ATH10K_FW_IE_WMI_OP_VERSION.
 942          */
 943         if (ar->wmi.op_version == ATH10K_FW_WMI_OP_VERSION_UNSET) {
 944                 if (test_bit(ATH10K_FW_FEATURE_WMI_10X, ar->fw_features)) {
 945                         if (test_bit(ATH10K_FW_FEATURE_WMI_10_2,
 946                                      ar->fw_features))
 947                                 ar->wmi.op_version = ATH10K_FW_WMI_OP_VERSION_10_2;
 948                         else
 949                                 ar->wmi.op_version = ATH10K_FW_WMI_OP_VERSION_10_1;
 950                 } else {
 951                         ar->wmi.op_version = ATH10K_FW_WMI_OP_VERSION_MAIN;
 952                 }
 953         }
 954
 955         switch (ar->wmi.op_version) {
 956         case ATH10K_FW_WMI_OP_VERSION_MAIN:
 957                 ar->max_num_peers = TARGET_NUM_PEERS;
 958                 ar->max_num_stations = TARGET_NUM_STATIONS;
 959                 ar->max_num_vdevs = TARGET_NUM_VDEVS;
 960                 ar->htt.max_num_pending_tx = TARGET_NUM_MSDU_DESC;
 961                 break;
 962         case ATH10K_FW_WMI_OP_VERSION_10_1:
 963         case ATH10K_FW_WMI_OP_VERSION_10_2:
 964         case ATH10K_FW_WMI_OP_VERSION_10_2_4:
 965                 ar->max_num_peers = TARGET_10X_NUM_PEERS;
 966                 ar->max_num_stations = TARGET_10X_NUM_STATIONS;
 967                 ar->max_num_vdevs = TARGET_10X_NUM_VDEVS;
 968                 ar->htt.max_num_pending_tx = TARGET_10X_NUM_MSDU_DESC;
 969                 break;
 970         case ATH10K_FW_WMI_OP_VERSION_TLV:
 971                 ar->max_num_peers = TARGET_TLV_NUM_PEERS;
 972                 ar->max_num_stations = TARGET_TLV_NUM_STATIONS;
 973                 ar->max_num_vdevs = TARGET_TLV_NUM_VDEVS;
 974                 ar->htt.max_num_pending_tx = TARGET_TLV_NUM_MSDU_DESC;
 975                 break;
 976         case ATH10K_FW_WMI_OP_VERSION_UNSET:
 977         case ATH10K_FW_WMI_OP_VERSION_MAX:
 978                 WARN_ON(1);
 979                 return -EINVAL;
 980         }
 981
 982         return 0;
 983 }
 984
 985 int ath10k_core_start(struct ath10k *ar, enum ath10k_firmware_mode mode)
 986 {
 987         int status;
 988
 989         lockdep_assert_held(&ar->conf_mutex);
 990
 991         clear_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags);
 992
 993         ath10k_bmi_start(ar);
 994
 995         if (ath10k_init_configure_target(ar)) {
 996                 status = -EINVAL;
 997                 goto err;
 998         }
 999
1000         status = ath10k_download_cal_data(ar);
1001         if (status)
1002                 goto err;
1003
1004         status = ath10k_download_fw(ar, mode);
1005         if (status)
1006                 goto err;
1007
1008         status = ath10k_init_uart(ar);
1009         if (status)
1010                 goto err;
1011
1012         ar->htc.htc_ops.target_send_suspend_complete =
1013                 ath10k_send_suspend_complete;
1014
1015         status = ath10k_htc_init(ar);
1016         if (status) {
1017                 ath10k_err(ar, "could not init HTC (%d)\n", status);
1018                 goto err;
1019         }
1020
1021         status = ath10k_bmi_done(ar);
1022         if (status)
1023                 goto err;
1024
1025         status = ath10k_wmi_attach(ar);
1026         if (status) {
1027                 ath10k_err(ar, "WMI attach failed: %d\n", status);
1028                 goto err;
1029         }
1030
1031         status = ath10k_htt_init(ar);
1032         if (status) {
1033                 ath10k_err(ar, "failed to init htt: %d\n", status);
1034                 goto err_wmi_detach;
1035         }
1036
1037         status = ath10k_htt_tx_alloc(&ar->htt);
1038         if (status) {
1039                 ath10k_err(ar, "failed to alloc htt tx: %d\n", status);
1040                 goto err_wmi_detach;
1041         }
1042
1043         status = ath10k_htt_rx_alloc(&ar->htt);
1044         if (status) {
1045                 ath10k_err(ar, "failed to alloc htt rx: %d\n", status);
1046                 goto err_htt_tx_detach;
1047         }
1048
1049         status = ath10k_hif_start(ar);
1050         if (status) {
1051                 ath10k_err(ar, "could not start HIF: %d\n", status);
1052                 goto err_htt_rx_detach;
1053         }
1054
1055         status = ath10k_htc_wait_target(&ar->htc);
1056         if (status) {
1057                 ath10k_err(ar, "failed to connect to HTC: %d\n", status);
1058                 goto err_hif_stop;
1059         }
1060
1061         if (mode == ATH10K_FIRMWARE_MODE_NORMAL) {
1062                 status = ath10k_htt_connect(&ar->htt);
1063                 if (status) {
1064                         ath10k_err(ar, "failed to connect htt (%d)\n", status);
1065                         goto err_hif_stop;
1066                 }
1067         }
1068
1069         status = ath10k_wmi_connect(ar);
1070         if (status) {
1071                 ath10k_err(ar, "could not connect wmi: %d\n", status);
1072                 goto err_hif_stop;
1073         }
1074
1075         status = ath10k_htc_start(&ar->htc);
1076         if (status) {
1077                 ath10k_err(ar, "failed to start htc: %d\n", status);
1078                 goto err_hif_stop;
1079         }
1080
1081         if (mode == ATH10K_FIRMWARE_MODE_NORMAL) {
1082                 status = ath10k_wmi_wait_for_service_ready(ar);
1083                 if (status <= 0) {
1084                         ath10k_warn(ar, "wmi service ready event not received");
1085                         status = -ETIMEDOUT;
1086                         goto err_hif_stop;
1087                 }
1088         }
1089
1090         ath10k_dbg(ar, ATH10K_DBG_BOOT, "firmware %s booted\n",
1091                    ar->hw->wiphy->fw_version);
1092
1093         status = ath10k_wmi_cmd_init(ar);
1094         if (status) {
1095                 ath10k_err(ar, "could not send WMI init command (%d)\n",
1096                            status);
1097                 goto err_hif_stop;
1098         }
1099
1100         status = ath10k_wmi_wait_for_unified_ready(ar);
1101         if (status <= 0) {
1102                 ath10k_err(ar, "wmi unified ready event not received\n");
1103                 status = -ETIMEDOUT;
1104                 goto err_hif_stop;
1105         }
1106
1107         /* If firmware indicates Full Rx Reorder support it must be used in a
1108          * slightly different manner. Let HTT code know.
1109          */
1110         ar->htt.rx_ring.in_ord_rx = !!(test_bit(WMI_SERVICE_RX_FULL_REORDER,
1111                                                 ar->wmi.svc_map));
1112
1113         status = ath10k_htt_rx_ring_refill(ar);
1114         if (status) {
1115                 ath10k_err(ar, "failed to refill htt rx ring: %d\n", status);
1116                 goto err_hif_stop;
1117         }
1118
1119         /* we don't care about HTT in UTF mode */
1120         if (mode == ATH10K_FIRMWARE_MODE_NORMAL) {
1121                 status = ath10k_htt_setup(&ar->htt);
1122                 if (status) {
1123                         ath10k_err(ar, "failed to setup htt: %d\n", status);
1124                         goto err_hif_stop;
1125                 }
1126         }
1127
1128         status = ath10k_debug_start(ar);
1129         if (status)
1130                 goto err_hif_stop;
1131
1132         ar->free_vdev_map = (1LL << ar->max_num_vdevs) - 1;
1133
1134         INIT_LIST_HEAD(&ar->arvifs);
1135
1136         return 0;
1137
1138 err_hif_stop:
1139         ath10k_hif_stop(ar);
1140 err_htt_rx_detach:
1141         ath10k_htt_rx_free(&ar->htt);
1142 err_htt_tx_detach:
1143         ath10k_htt_tx_free(&ar->htt);
1144 err_wmi_detach:
1145         ath10k_wmi_detach(ar);
1146 err:
1147         return status;
1148 }
1149 EXPORT_SYMBOL(ath10k_core_start);
1150
1151 int ath10k_wait_for_suspend(struct ath10k *ar, u32 suspend_opt)
1152 {
1153         int ret;
1154
1155         reinit_completion(&ar->target_suspend);
1156
1157         ret = ath10k_wmi_pdev_suspend_target(ar, suspend_opt);
1158         if (ret) {
1159                 ath10k_warn(ar, "could not suspend target (%d)\n", ret);
1160                 return ret;
1161         }
1162
1163         ret = wait_for_completion_timeout(&ar->target_suspend, 1 * HZ);
1164
1165         if (ret == 0) {
1166                 ath10k_warn(ar, "suspend timed out - target pause event never came\n");
1167                 return -ETIMEDOUT;
1168         }
1169
1170         return 0;
1171 }
1172
1173 void ath10k_core_stop(struct ath10k *ar)
1174 {
1175         lockdep_assert_held(&ar->conf_mutex);
1176
1177         /* try to suspend target */
1178         if (ar->state != ATH10K_STATE_RESTARTING &&
1179             ar->state != ATH10K_STATE_UTF)
1180                 ath10k_wait_for_suspend(ar, WMI_PDEV_SUSPEND_AND_DISABLE_INTR);
1181
1182         ath10k_debug_stop(ar);
1183         ath10k_hif_stop(ar);
1184         ath10k_htt_tx_free(&ar->htt);
1185         ath10k_htt_rx_free(&ar->htt);
1186         ath10k_wmi_detach(ar);
1187 }
1188 EXPORT_SYMBOL(ath10k_core_stop);
1189
1190 /* mac80211 manages fw/hw initialization through start/stop hooks. However in
1191  * order to know what hw capabilities should be advertised to mac80211 it is
1192  * necessary to load the firmware (and tear it down immediately since start
1193  * hook will try to init it again) before registering */
1194 static int ath10k_core_probe_fw(struct ath10k *ar)
1195 {
1196         struct bmi_target_info target_info;
1197         int ret = 0;
1198
1199         ret = ath10k_hif_power_up(ar);
1200         if (ret) {
1201                 ath10k_err(ar, "could not start pci hif (%d)\n", ret);
1202                 return ret;
1203         }
1204
1205         memset(&target_info, 0, sizeof(target_info));
1206         ret = ath10k_bmi_get_target_info(ar, &target_info);
1207         if (ret) {
1208                 ath10k_err(ar, "could not get target info (%d)\n", ret);
1209                 goto err_power_down;
1210         }
1211
1212         ar->target_version = target_info.version;
1213         ar->hw->wiphy->hw_version = target_info.version;
1214
1215         ret = ath10k_init_hw_params(ar);
1216         if (ret) {
1217                 ath10k_err(ar, "could not get hw params (%d)\n", ret);
1218                 goto err_power_down;
1219         }
1220
1221         ret = ath10k_core_fetch_firmware_files(ar);
1222         if (ret) {
1223                 ath10k_err(ar, "could not fetch firmware files (%d)\n", ret);
1224                 goto err_power_down;
1225         }
1226
1227         ret = ath10k_core_init_firmware_features(ar);
1228         if (ret) {
1229                 ath10k_err(ar, "fatal problem with firmware features: %d\n",
1230                            ret);
1231                 goto err_free_firmware_files;
1232         }
1233
1234         mutex_lock(&ar->conf_mutex);
1235
1236         ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_NORMAL);
1237         if (ret) {
1238                 ath10k_err(ar, "could not init core (%d)\n", ret);
1239                 goto err_unlock;
1240         }
1241
1242         ath10k_print_driver_info(ar);
1243         ath10k_core_stop(ar);
1244
1245         mutex_unlock(&ar->conf_mutex);
1246
1247         ath10k_hif_power_down(ar);
1248         return 0;
1249
1250 err_unlock:
1251         mutex_unlock(&ar->conf_mutex);
1252
1253 err_free_firmware_files:
1254         ath10k_core_free_firmware_files(ar);
1255
1256 err_power_down:
1257         ath10k_hif_power_down(ar);
1258
1259         return ret;
1260 }
1261
1262 static void ath10k_core_register_work(struct work_struct *work)
1263 {
1264         struct ath10k *ar = container_of(work, struct ath10k, register_work);
1265         int status;
1266
1267         status = ath10k_core_probe_fw(ar);
1268         if (status) {
1269                 ath10k_err(ar, "could not probe fw (%d)\n", status);
1270                 goto err;
1271         }
1272
1273         status = ath10k_mac_register(ar);
1274         if (status) {
1275                 ath10k_err(ar, "could not register to mac80211 (%d)\n", status);
1276                 goto err_release_fw;
1277         }
1278
1279         status = ath10k_debug_register(ar);
1280         if (status) {
1281                 ath10k_err(ar, "unable to initialize debugfs\n");
1282                 goto err_unregister_mac;
1283         }
1284
1285         status = ath10k_spectral_create(ar);
1286         if (status) {
1287                 ath10k_err(ar, "failed to initialize spectral\n");
1288                 goto err_debug_destroy;
1289         }
1290
1291         status = ath10k_thermal_register(ar);
1292         if (status) {
1293                 ath10k_err(ar, "could not register thermal device: %d\n",
1294                            status);
1295                 goto err_spectral_destroy;
1296         }
1297
1298         set_bit(ATH10K_FLAG_CORE_REGISTERED, &ar->dev_flags);
1299         return;
1300
1301 err_spectral_destroy:
1302         ath10k_spectral_destroy(ar);
1303 err_debug_destroy:
1304         ath10k_debug_destroy(ar);
1305 err_unregister_mac:
1306         ath10k_mac_unregister(ar);
1307 err_release_fw:
1308         ath10k_core_free_firmware_files(ar);
1309 err:
1310         /* TODO: It's probably a good idea to release device from the driver
1311          * but calling device_release_driver() here will cause a deadlock.
1312          */
1313         return;
1314 }
1315
1316 int ath10k_core_register(struct ath10k *ar, u32 chip_id)
1317 {
1318         ar->chip_id = chip_id;
1319         queue_work(ar->workqueue, &ar->register_work);
1320
1321         return 0;
1322 }
1323 EXPORT_SYMBOL(ath10k_core_register);
1324
1325 void ath10k_core_unregister(struct ath10k *ar)
1326 {
1327         cancel_work_sync(&ar->register_work);
1328
1329         if (!test_bit(ATH10K_FLAG_CORE_REGISTERED, &ar->dev_flags))
1330                 return;
1331
1332         ath10k_thermal_unregister(ar);
1333         /* Stop spectral before unregistering from mac80211 to remove the
1334          * relayfs debugfs file cleanly. Otherwise the parent debugfs tree
1335          * would be already be free'd recursively, leading to a double free.
1336          */
1337         ath10k_spectral_destroy(ar);
1338
1339         /* We must unregister from mac80211 before we stop HTC and HIF.
1340          * Otherwise we will fail to submit commands to FW and mac80211 will be
1341          * unhappy about callback failures. */
1342         ath10k_mac_unregister(ar);
1343
1344         ath10k_testmode_destroy(ar);
1345
1346         ath10k_core_free_firmware_files(ar);
1347
1348         ath10k_debug_unregister(ar);
1349 }
1350 EXPORT_SYMBOL(ath10k_core_unregister);
1351
1352 struct ath10k *ath10k_core_create(size_t priv_size, struct device *dev,
1353                                   enum ath10k_bus bus,
1354                                   enum ath10k_hw_rev hw_rev,
1355                                   const struct ath10k_hif_ops *hif_ops)
1356 {
1357         struct ath10k *ar;
1358         int ret;
1359
1360         ar = ath10k_mac_create(priv_size);
1361         if (!ar)
1362                 return NULL;
1363
1364         ar->ath_common.priv = ar;
1365         ar->ath_common.hw = ar->hw;
1366         ar->dev = dev;
1367         ar->hw_rev = hw_rev;
1368         ar->hif.ops = hif_ops;
1369         ar->hif.bus = bus;
1370
1371         switch (hw_rev) {
1372         case ATH10K_HW_QCA988X:
1373                 ar->regs = &qca988x_regs;
1374                 break;
1375         case ATH10K_HW_QCA6174:
1376                 ar->regs = &qca6174_regs;
1377                 break;
1378         default:
1379                 ath10k_err(ar, "unsupported core hardware revision %d\n",
1380                            hw_rev);
1381                 ret = -ENOTSUPP;
1382                 goto err_free_mac;
1383         }
1384
1385         init_completion(&ar->scan.started);
1386         init_completion(&ar->scan.completed);
1387         init_completion(&ar->scan.on_channel);
1388         init_completion(&ar->target_suspend);
1389
1390         init_completion(&ar->install_key_done);
1391         init_completion(&ar->vdev_setup_done);
1392         init_completion(&ar->thermal.wmi_sync);
1393
1394         INIT_DELAYED_WORK(&ar->scan.timeout, ath10k_scan_timeout_work);
1395
1396         ar->workqueue = create_singlethread_workqueue("ath10k_wq");
1397         if (!ar->workqueue)
1398                 goto err_free_mac;
1399
1400         mutex_init(&ar->conf_mutex);
1401         spin_lock_init(&ar->data_lock);
1402
1403         INIT_LIST_HEAD(&ar->peers);
1404         init_waitqueue_head(&ar->peer_mapping_wq);
1405         init_waitqueue_head(&ar->htt.empty_tx_wq);
1406         init_waitqueue_head(&ar->wmi.tx_credits_wq);
1407
1408         init_completion(&ar->offchan_tx_completed);
1409         INIT_WORK(&ar->offchan_tx_work, ath10k_offchan_tx_work);
1410         skb_queue_head_init(&ar->offchan_tx_queue);
1411
1412         INIT_WORK(&ar->wmi_mgmt_tx_work, ath10k_mgmt_over_wmi_tx_work);
1413         skb_queue_head_init(&ar->wmi_mgmt_tx_queue);
1414
1415         INIT_WORK(&ar->register_work, ath10k_core_register_work);
1416         INIT_WORK(&ar->restart_work, ath10k_core_restart);
1417
1418         ret = ath10k_debug_create(ar);
1419         if (ret)
1420                 goto err_free_wq;
1421
1422         return ar;
1423
1424 err_free_wq:
1425         destroy_workqueue(ar->workqueue);
1426
1427 err_free_mac:
1428         ath10k_mac_destroy(ar);
1429
1430         return NULL;
1431 }
1432 EXPORT_SYMBOL(ath10k_core_create);
1433
1434 void ath10k_core_destroy(struct ath10k *ar)
1435 {
1436         flush_workqueue(ar->workqueue);
1437         destroy_workqueue(ar->workqueue);
1438
1439         ath10k_debug_destroy(ar);
1440         ath10k_mac_destroy(ar);
1441 }
1442 EXPORT_SYMBOL(ath10k_core_destroy);
1443
1444 MODULE_AUTHOR("Qualcomm Atheros");
1445 MODULE_DESCRIPTION("Core module for QCA988X PCIe devices.");
1446 MODULE_LICENSE("Dual BSD/GPL");