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 #include "testmode.h"
  30
  31 unsigned int ath10k_debug_mask;
  32 static bool uart_print;
  33 static unsigned int ath10k_p2p;
  34 module_param_named(debug_mask, ath10k_debug_mask, uint, 0644);
  35 module_param(uart_print, bool, 0644);
  36 module_param_named(p2p, ath10k_p2p, uint, 0644);
  37 MODULE_PARM_DESC(debug_mask, "Debugging mask");
  38 MODULE_PARM_DESC(uart_print, "Uart target debugging");
  39 MODULE_PARM_DESC(p2p, "Enable ath10k P2P support");
  40
  41 static const struct ath10k_hw_params ath10k_hw_params_list[] = {
  42         {
  43                 .id = QCA988X_HW_2_0_VERSION,
  44                 .name = "qca988x hw2.0",
  45                 .patch_load_addr = QCA988X_HW_2_0_PATCH_LOAD_ADDR,
  46                 .fw = {
  47                         .dir = QCA988X_HW_2_0_FW_DIR,
  48                         .fw = QCA988X_HW_2_0_FW_FILE,
  49                         .otp = QCA988X_HW_2_0_OTP_FILE,
  50                         .board = QCA988X_HW_2_0_BOARD_DATA_FILE,
  51                 },
  52         },
  53 };
  54
  55 static void ath10k_send_suspend_complete(struct ath10k *ar)
  56 {
  57         ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot suspend complete\n");
  58
  59         complete(&ar->target_suspend);
  60 }
  61
  62 static int ath10k_init_configure_target(struct ath10k *ar)
  63 {
  64         u32 param_host;
  65         int ret;
  66
  67         /* tell target which HTC version it is used*/
  68         ret = ath10k_bmi_write32(ar, hi_app_host_interest,
  69                                  HTC_PROTOCOL_VERSION);
  70         if (ret) {
  71                 ath10k_err(ar, "settings HTC version failed\n");
  72                 return ret;
  73         }
  74
  75         /* set the firmware mode to STA/IBSS/AP */
  76         ret = ath10k_bmi_read32(ar, hi_option_flag, &param_host);
  77         if (ret) {
  78                 ath10k_err(ar, "setting firmware mode (1/2) failed\n");
  79                 return ret;
  80         }
  81
  82         /* TODO following parameters need to be re-visited. */
  83         /* num_device */
  84         param_host |= (1 << HI_OPTION_NUM_DEV_SHIFT);
  85         /* Firmware mode */
  86         /* FIXME: Why FW_MODE_AP ??.*/
  87         param_host |= (HI_OPTION_FW_MODE_AP << HI_OPTION_FW_MODE_SHIFT);
  88         /* mac_addr_method */
  89         param_host |= (1 << HI_OPTION_MAC_ADDR_METHOD_SHIFT);
  90         /* firmware_bridge */
  91         param_host |= (0 << HI_OPTION_FW_BRIDGE_SHIFT);
  92         /* fwsubmode */
  93         param_host |= (0 << HI_OPTION_FW_SUBMODE_SHIFT);
  94
  95         ret = ath10k_bmi_write32(ar, hi_option_flag, param_host);
  96         if (ret) {
  97                 ath10k_err(ar, "setting firmware mode (2/2) failed\n");
  98                 return ret;
  99         }
 100
 101         /* We do all byte-swapping on the host */
 102         ret = ath10k_bmi_write32(ar, hi_be, 0);
 103         if (ret) {
 104                 ath10k_err(ar, "setting host CPU BE mode failed\n");
 105                 return ret;
 106         }
 107
 108         /* FW descriptor/Data swap flags */
 109         ret = ath10k_bmi_write32(ar, hi_fw_swap, 0);
 110
 111         if (ret) {
 112                 ath10k_err(ar, "setting FW data/desc swap flags failed\n");
 113                 return ret;
 114         }
 115
 116         return 0;
 117 }
 118
 119 static const struct firmware *ath10k_fetch_fw_file(struct ath10k *ar,
 120                                                    const char *dir,
 121                                                    const char *file)
 122 {
 123         char filename[100];
 124         const struct firmware *fw;
 125         int ret;
 126
 127         if (file == NULL)
 128                 return ERR_PTR(-ENOENT);
 129
 130         if (dir == NULL)
 131                 dir = ".";
 132
 133         snprintf(filename, sizeof(filename), "%s/%s", dir, file);
 134         ret = request_firmware(&fw, filename, ar->dev);
 135         if (ret)
 136                 return ERR_PTR(ret);
 137
 138         return fw;
 139 }
 140
 141 static int ath10k_push_board_ext_data(struct ath10k *ar)
 142 {
 143         u32 board_data_size = QCA988X_BOARD_DATA_SZ;
 144         u32 board_ext_data_size = QCA988X_BOARD_EXT_DATA_SZ;
 145         u32 board_ext_data_addr;
 146         int ret;
 147
 148         ret = ath10k_bmi_read32(ar, hi_board_ext_data, &board_ext_data_addr);
 149         if (ret) {
 150                 ath10k_err(ar, "could not read board ext data addr (%d)\n",
 151                            ret);
 152                 return ret;
 153         }
 154
 155         ath10k_dbg(ar, ATH10K_DBG_BOOT,
 156                    "boot push board extended data addr 0x%x\n",
 157                    board_ext_data_addr);
 158
 159         if (board_ext_data_addr == 0)
 160                 return 0;
 161
 162         if (ar->board_len != (board_data_size + board_ext_data_size)) {
 163                 ath10k_err(ar, "invalid board (ext) data sizes %zu != %d+%d\n",
 164                            ar->board_len, board_data_size, board_ext_data_size);
 165                 return -EINVAL;
 166         }
 167
 168         ret = ath10k_bmi_write_memory(ar, board_ext_data_addr,
 169                                       ar->board_data + board_data_size,
 170                                       board_ext_data_size);
 171         if (ret) {
 172                 ath10k_err(ar, "could not write board ext data (%d)\n", ret);
 173                 return ret;
 174         }
 175
 176         ret = ath10k_bmi_write32(ar, hi_board_ext_data_config,
 177                                  (board_ext_data_size << 16) | 1);
 178         if (ret) {
 179                 ath10k_err(ar, "could not write board ext data bit (%d)\n",
 180                            ret);
 181                 return ret;
 182         }
 183
 184         return 0;
 185 }
 186
 187 static int ath10k_download_board_data(struct ath10k *ar)
 188 {
 189         u32 board_data_size = QCA988X_BOARD_DATA_SZ;
 190         u32 address;
 191         int ret;
 192
 193         ret = ath10k_push_board_ext_data(ar);
 194         if (ret) {
 195                 ath10k_err(ar, "could not push board ext data (%d)\n", ret);
 196                 goto exit;
 197         }
 198
 199         ret = ath10k_bmi_read32(ar, hi_board_data, &address);
 200         if (ret) {
 201                 ath10k_err(ar, "could not read board data addr (%d)\n", ret);
 202                 goto exit;
 203         }
 204
 205         ret = ath10k_bmi_write_memory(ar, address, ar->board_data,
 206                                       min_t(u32, board_data_size,
 207                                             ar->board_len));
 208         if (ret) {
 209                 ath10k_err(ar, "could not write board data (%d)\n", ret);
 210                 goto exit;
 211         }
 212
 213         ret = ath10k_bmi_write32(ar, hi_board_data_initialized, 1);
 214         if (ret) {
 215                 ath10k_err(ar, "could not write board data bit (%d)\n", ret);
 216                 goto exit;
 217         }
 218
 219 exit:
 220         return ret;
 221 }
 222
 223 static int ath10k_download_and_run_otp(struct ath10k *ar)
 224 {
 225         u32 result, address = ar->hw_params.patch_load_addr;
 226         int ret;
 227
 228         /* OTP is optional */
 229
 230         if (!ar->otp_data || !ar->otp_len) {
 231                 ath10k_warn(ar, "Not running otp, calibration will be incorrect (otp-data %p otp_len %zd)!\n",
 232                             ar->otp_data, ar->otp_len);
 233                 return 0;
 234         }
 235
 236         ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot upload otp to 0x%x len %zd\n",
 237                    address, ar->otp_len);
 238
 239         ret = ath10k_bmi_fast_download(ar, address, ar->otp_data, ar->otp_len);
 240         if (ret) {
 241                 ath10k_err(ar, "could not write otp (%d)\n", ret);
 242                 return ret;
 243         }
 244
 245         ret = ath10k_bmi_execute(ar, address, 0, &result);
 246         if (ret) {
 247                 ath10k_err(ar, "could not execute otp (%d)\n", ret);
 248                 return ret;
 249         }
 250
 251         ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot otp execute result %d\n", result);
 252
 253         if (result != 0) {
 254                 ath10k_err(ar, "otp calibration failed: %d", result);
 255                 return -EINVAL;
 256         }
 257
 258         return 0;
 259 }
 260
 261 static int ath10k_download_fw(struct ath10k *ar, enum ath10k_firmware_mode mode)
 262 {
 263         u32 address, data_len;
 264         const char *mode_name;
 265         const void *data;
 266         int ret;
 267
 268         address = ar->hw_params.patch_load_addr;
 269
 270         switch (mode) {
 271         case ATH10K_FIRMWARE_MODE_NORMAL:
 272                 data = ar->firmware_data;
 273                 data_len = ar->firmware_len;
 274                 mode_name = "normal";
 275                 break;
 276         case ATH10K_FIRMWARE_MODE_UTF:
 277                 data = ar->testmode.utf->data;
 278                 data_len = ar->testmode.utf->size;
 279                 mode_name = "utf";
 280                 break;
 281         default:
 282                 ath10k_err(ar, "unknown firmware mode: %d\n", mode);
 283                 return -EINVAL;
 284         }
 285
 286         ath10k_dbg(ar, ATH10K_DBG_BOOT,
 287                    "boot uploading firmware image %p len %d mode %s\n",
 288                    data, data_len, mode_name);
 289
 290         ret = ath10k_bmi_fast_download(ar, address, data, data_len);
 291         if (ret) {
 292                 ath10k_err(ar, "failed to download %s firmware: %d\n",
 293                            mode_name, ret);
 294                 return ret;
 295         }
 296
 297         return ret;
 298 }
 299
 300 static void ath10k_core_free_firmware_files(struct ath10k *ar)
 301 {
 302         if (ar->board && !IS_ERR(ar->board))
 303                 release_firmware(ar->board);
 304
 305         if (ar->otp && !IS_ERR(ar->otp))
 306                 release_firmware(ar->otp);
 307
 308         if (ar->firmware && !IS_ERR(ar->firmware))
 309                 release_firmware(ar->firmware);
 310
 311         ar->board = NULL;
 312         ar->board_data = NULL;
 313         ar->board_len = 0;
 314
 315         ar->otp = NULL;
 316         ar->otp_data = NULL;
 317         ar->otp_len = 0;
 318
 319         ar->firmware = NULL;
 320         ar->firmware_data = NULL;
 321         ar->firmware_len = 0;
 322 }
 323
 324 static int ath10k_core_fetch_firmware_api_1(struct ath10k *ar)
 325 {
 326         int ret = 0;
 327
 328         if (ar->hw_params.fw.fw == NULL) {
 329                 ath10k_err(ar, "firmware file not defined\n");
 330                 return -EINVAL;
 331         }
 332
 333         if (ar->hw_params.fw.board == NULL) {
 334                 ath10k_err(ar, "board data file not defined");
 335                 return -EINVAL;
 336         }
 337
 338         ar->board = ath10k_fetch_fw_file(ar,
 339                                          ar->hw_params.fw.dir,
 340                                          ar->hw_params.fw.board);
 341         if (IS_ERR(ar->board)) {
 342                 ret = PTR_ERR(ar->board);
 343                 ath10k_err(ar, "could not fetch board data (%d)\n", ret);
 344                 goto err;
 345         }
 346
 347         ar->board_data = ar->board->data;
 348         ar->board_len = ar->board->size;
 349
 350         ar->firmware = ath10k_fetch_fw_file(ar,
 351                                             ar->hw_params.fw.dir,
 352                                             ar->hw_params.fw.fw);
 353         if (IS_ERR(ar->firmware)) {
 354                 ret = PTR_ERR(ar->firmware);
 355                 ath10k_err(ar, "could not fetch firmware (%d)\n", ret);
 356                 goto err;
 357         }
 358
 359         ar->firmware_data = ar->firmware->data;
 360         ar->firmware_len = ar->firmware->size;
 361
 362         /* OTP may be undefined. If so, don't fetch it at all */
 363         if (ar->hw_params.fw.otp == NULL)
 364                 return 0;
 365
 366         ar->otp = ath10k_fetch_fw_file(ar,
 367                                        ar->hw_params.fw.dir,
 368                                        ar->hw_params.fw.otp);
 369         if (IS_ERR(ar->otp)) {
 370                 ret = PTR_ERR(ar->otp);
 371                 ath10k_err(ar, "could not fetch otp (%d)\n", ret);
 372                 goto err;
 373         }
 374
 375         ar->otp_data = ar->otp->data;
 376         ar->otp_len = ar->otp->size;
 377
 378         return 0;
 379
 380 err:
 381         ath10k_core_free_firmware_files(ar);
 382         return ret;
 383 }
 384
 385 static int ath10k_core_fetch_firmware_api_n(struct ath10k *ar, const char *name)
 386 {
 387         size_t magic_len, len, ie_len;
 388         int ie_id, i, index, bit, ret;
 389         struct ath10k_fw_ie *hdr;
 390         const u8 *data;
 391         __le32 *timestamp;
 392
 393         /* first fetch the firmware file (firmware-*.bin) */
 394         ar->firmware = ath10k_fetch_fw_file(ar, ar->hw_params.fw.dir, name);
 395         if (IS_ERR(ar->firmware)) {
 396                 ath10k_err(ar, "could not fetch firmware file '%s/%s': %ld\n",
 397                            ar->hw_params.fw.dir, name, PTR_ERR(ar->firmware));
 398                 return PTR_ERR(ar->firmware);
 399         }
 400
 401         data = ar->firmware->data;
 402         len = ar->firmware->size;
 403
 404         /* magic also includes the null byte, check that as well */
 405         magic_len = strlen(ATH10K_FIRMWARE_MAGIC) + 1;
 406
 407         if (len < magic_len) {
 408                 ath10k_err(ar, "firmware file '%s/%s' too small to contain magic: %zu\n",
 409                            ar->hw_params.fw.dir, name, len);
 410                 ret = -EINVAL;
 411                 goto err;
 412         }
 413
 414         if (memcmp(data, ATH10K_FIRMWARE_MAGIC, magic_len) != 0) {
 415                 ath10k_err(ar, "invalid firmware magic\n");
 416                 ret = -EINVAL;
 417                 goto err;
 418         }
 419
 420         /* jump over the padding */
 421         magic_len = ALIGN(magic_len, 4);
 422
 423         len -= magic_len;
 424         data += magic_len;
 425
 426         /* loop elements */
 427         while (len > sizeof(struct ath10k_fw_ie)) {
 428                 hdr = (struct ath10k_fw_ie *)data;
 429
 430                 ie_id = le32_to_cpu(hdr->id);
 431                 ie_len = le32_to_cpu(hdr->len);
 432
 433                 len -= sizeof(*hdr);
 434                 data += sizeof(*hdr);
 435
 436                 if (len < ie_len) {
 437                         ath10k_err(ar, "invalid length for FW IE %d (%zu < %zu)\n",
 438                                    ie_id, len, ie_len);
 439                         ret = -EINVAL;
 440                         goto err;
 441                 }
 442
 443                 switch (ie_id) {
 444                 case ATH10K_FW_IE_FW_VERSION:
 445                         if (ie_len > sizeof(ar->hw->wiphy->fw_version) - 1)
 446                                 break;
 447
 448                         memcpy(ar->hw->wiphy->fw_version, data, ie_len);
 449                         ar->hw->wiphy->fw_version[ie_len] = '\0';
 450
 451                         ath10k_dbg(ar, ATH10K_DBG_BOOT,
 452                                    "found fw version %s\n",
 453                                     ar->hw->wiphy->fw_version);
 454                         break;
 455                 case ATH10K_FW_IE_TIMESTAMP:
 456                         if (ie_len != sizeof(u32))
 457                                 break;
 458
 459                         timestamp = (__le32 *)data;
 460
 461                         ath10k_dbg(ar, ATH10K_DBG_BOOT, "found fw timestamp %d\n",
 462                                    le32_to_cpup(timestamp));
 463                         break;
 464                 case ATH10K_FW_IE_FEATURES:
 465                         ath10k_dbg(ar, ATH10K_DBG_BOOT,
 466                                    "found firmware features ie (%zd B)\n",
 467                                    ie_len);
 468
 469                         for (i = 0; i < ATH10K_FW_FEATURE_COUNT; i++) {
 470                                 index = i / 8;
 471                                 bit = i % 8;
 472
 473                                 if (index == ie_len)
 474                                         break;
 475
 476                                 if (data[index] & (1 << bit)) {
 477                                         ath10k_dbg(ar, ATH10K_DBG_BOOT,
 478                                                    "Enabling feature bit: %i\n",
 479                                                    i);
 480                                         __set_bit(i, ar->fw_features);
 481                                 }
 482                         }
 483
 484                         ath10k_dbg_dump(ar, ATH10K_DBG_BOOT, "features", "",
 485                                         ar->fw_features,
 486                                         sizeof(ar->fw_features));
 487                         break;
 488                 case ATH10K_FW_IE_FW_IMAGE:
 489                         ath10k_dbg(ar, ATH10K_DBG_BOOT,
 490                                    "found fw image ie (%zd B)\n",
 491                                    ie_len);
 492
 493                         ar->firmware_data = data;
 494                         ar->firmware_len = ie_len;
 495
 496                         break;
 497                 case ATH10K_FW_IE_OTP_IMAGE:
 498                         ath10k_dbg(ar, ATH10K_DBG_BOOT,
 499                                    "found otp image ie (%zd B)\n",
 500                                    ie_len);
 501
 502                         ar->otp_data = data;
 503                         ar->otp_len = ie_len;
 504
 505                         break;
 506                 default:
 507                         ath10k_warn(ar, "Unknown FW IE: %u\n",
 508                                     le32_to_cpu(hdr->id));
 509                         break;
 510                 }
 511
 512                 /* jump over the padding */
 513                 ie_len = ALIGN(ie_len, 4);
 514
 515                 len -= ie_len;
 516                 data += ie_len;
 517         }
 518
 519         if (!ar->firmware_data || !ar->firmware_len) {
 520                 ath10k_warn(ar, "No ATH10K_FW_IE_FW_IMAGE found from '%s/%s', skipping\n",
 521                             ar->hw_params.fw.dir, name);
 522                 ret = -ENOMEDIUM;
 523                 goto err;
 524         }
 525
 526         if (test_bit(ATH10K_FW_FEATURE_WMI_10_2, ar->fw_features) &&
 527             !test_bit(ATH10K_FW_FEATURE_WMI_10X, ar->fw_features)) {
 528                 ath10k_err(ar, "feature bits corrupted: 10.2 feature requires 10.x feature to be set as well");
 529                 ret = -EINVAL;
 530                 goto err;
 531         }
 532
 533         /* now fetch the board file */
 534         if (ar->hw_params.fw.board == NULL) {
 535                 ath10k_err(ar, "board data file not defined");
 536                 ret = -EINVAL;
 537                 goto err;
 538         }
 539
 540         ar->board = ath10k_fetch_fw_file(ar,
 541                                          ar->hw_params.fw.dir,
 542                                          ar->hw_params.fw.board);
 543         if (IS_ERR(ar->board)) {
 544                 ret = PTR_ERR(ar->board);
 545                 ath10k_err(ar, "could not fetch board data '%s/%s' (%d)\n",
 546                            ar->hw_params.fw.dir, ar->hw_params.fw.board,
 547                            ret);
 548                 goto err;
 549         }
 550
 551         ar->board_data = ar->board->data;
 552         ar->board_len = ar->board->size;
 553
 554         return 0;
 555
 556 err:
 557         ath10k_core_free_firmware_files(ar);
 558         return ret;
 559 }
 560
 561 static int ath10k_core_fetch_firmware_files(struct ath10k *ar)
 562 {
 563         int ret;
 564
 565         ar->fw_api = 3;
 566         ath10k_dbg(ar, ATH10K_DBG_BOOT, "trying fw api %d\n", ar->fw_api);
 567
 568         ret = ath10k_core_fetch_firmware_api_n(ar, ATH10K_FW_API3_FILE);
 569         if (ret == 0)
 570                 goto success;
 571
 572         ar->fw_api = 2;
 573         ath10k_dbg(ar, ATH10K_DBG_BOOT, "trying fw api %d\n", ar->fw_api);
 574
 575         ret = ath10k_core_fetch_firmware_api_n(ar, ATH10K_FW_API2_FILE);
 576         if (ret == 0)
 577                 goto success;
 578
 579         ar->fw_api = 1;
 580         ath10k_dbg(ar, ATH10K_DBG_BOOT, "trying fw api %d\n", ar->fw_api);
 581
 582         ret = ath10k_core_fetch_firmware_api_1(ar);
 583         if (ret)
 584                 return ret;
 585
 586 success:
 587         ath10k_dbg(ar, ATH10K_DBG_BOOT, "using fw api %d\n", ar->fw_api);
 588
 589         return 0;
 590 }
 591
 592 static int ath10k_init_download_firmware(struct ath10k *ar,
 593                                          enum ath10k_firmware_mode mode)
 594 {
 595         int ret;
 596
 597         ret = ath10k_download_board_data(ar);
 598         if (ret) {
 599                 ath10k_err(ar, "failed to download board data: %d\n", ret);
 600                 return ret;
 601         }
 602
 603         ret = ath10k_download_and_run_otp(ar);
 604         if (ret) {
 605                 ath10k_err(ar, "failed to run otp: %d\n", ret);
 606                 return ret;
 607         }
 608
 609         ret = ath10k_download_fw(ar, mode);
 610         if (ret) {
 611                 ath10k_err(ar, "failed to download firmware: %d\n", ret);
 612                 return ret;
 613         }
 614
 615         return ret;
 616 }
 617
 618 static int ath10k_init_uart(struct ath10k *ar)
 619 {
 620         int ret;
 621
 622         /*
 623          * Explicitly setting UART prints to zero as target turns it on
 624          * based on scratch registers.
 625          */
 626         ret = ath10k_bmi_write32(ar, hi_serial_enable, 0);
 627         if (ret) {
 628                 ath10k_warn(ar, "could not disable UART prints (%d)\n", ret);
 629                 return ret;
 630         }
 631
 632         if (!uart_print)
 633                 return 0;
 634
 635         ret = ath10k_bmi_write32(ar, hi_dbg_uart_txpin, 7);
 636         if (ret) {
 637                 ath10k_warn(ar, "could not enable UART prints (%d)\n", ret);
 638                 return ret;
 639         }
 640
 641         ret = ath10k_bmi_write32(ar, hi_serial_enable, 1);
 642         if (ret) {
 643                 ath10k_warn(ar, "could not enable UART prints (%d)\n", ret);
 644                 return ret;
 645         }
 646
 647         /* Set the UART baud rate to 19200. */
 648         ret = ath10k_bmi_write32(ar, hi_desired_baud_rate, 19200);
 649         if (ret) {
 650                 ath10k_warn(ar, "could not set the baud rate (%d)\n", ret);
 651                 return ret;
 652         }
 653
 654         ath10k_info(ar, "UART prints enabled\n");
 655         return 0;
 656 }
 657
 658 static int ath10k_init_hw_params(struct ath10k *ar)
 659 {
 660         const struct ath10k_hw_params *uninitialized_var(hw_params);
 661         int i;
 662
 663         for (i = 0; i < ARRAY_SIZE(ath10k_hw_params_list); i++) {
 664                 hw_params = &ath10k_hw_params_list[i];
 665
 666                 if (hw_params->id == ar->target_version)
 667                         break;
 668         }
 669
 670         if (i == ARRAY_SIZE(ath10k_hw_params_list)) {
 671                 ath10k_err(ar, "Unsupported hardware version: 0x%x\n",
 672                            ar->target_version);
 673                 return -EINVAL;
 674         }
 675
 676         ar->hw_params = *hw_params;
 677
 678         ath10k_dbg(ar, ATH10K_DBG_BOOT, "Hardware name %s version 0x%x\n",
 679                    ar->hw_params.name, ar->target_version);
 680
 681         return 0;
 682 }
 683
 684 static void ath10k_core_restart(struct work_struct *work)
 685 {
 686         struct ath10k *ar = container_of(work, struct ath10k, restart_work);
 687
 688         mutex_lock(&ar->conf_mutex);
 689
 690         switch (ar->state) {
 691         case ATH10K_STATE_ON:
 692                 ar->state = ATH10K_STATE_RESTARTING;
 693                 ath10k_hif_stop(ar);
 694                 ath10k_scan_finish(ar);
 695                 ieee80211_restart_hw(ar->hw);
 696                 break;
 697         case ATH10K_STATE_OFF:
 698                 /* this can happen if driver is being unloaded
 699                  * or if the crash happens during FW probing */
 700                 ath10k_warn(ar, "cannot restart a device that hasn't been started\n");
 701                 break;
 702         case ATH10K_STATE_RESTARTING:
 703                 /* hw restart might be requested from multiple places */
 704                 break;
 705         case ATH10K_STATE_RESTARTED:
 706                 ar->state = ATH10K_STATE_WEDGED;
 707                 /* fall through */
 708         case ATH10K_STATE_WEDGED:
 709                 ath10k_warn(ar, "device is wedged, will not restart\n");
 710                 break;
 711         case ATH10K_STATE_UTF:
 712                 ath10k_warn(ar, "firmware restart in UTF mode not supported\n");
 713                 break;
 714         }
 715
 716         mutex_unlock(&ar->conf_mutex);
 717 }
 718
 719 int ath10k_core_start(struct ath10k *ar, enum ath10k_firmware_mode mode)
 720 {
 721         int status;
 722
 723         lockdep_assert_held(&ar->conf_mutex);
 724
 725         ath10k_bmi_start(ar);
 726
 727         if (ath10k_init_configure_target(ar)) {
 728                 status = -EINVAL;
 729                 goto err;
 730         }
 731
 732         status = ath10k_init_download_firmware(ar, mode);
 733         if (status)
 734                 goto err;
 735
 736         status = ath10k_init_uart(ar);
 737         if (status)
 738                 goto err;
 739
 740         ar->htc.htc_ops.target_send_suspend_complete =
 741                 ath10k_send_suspend_complete;
 742
 743         status = ath10k_htc_init(ar);
 744         if (status) {
 745                 ath10k_err(ar, "could not init HTC (%d)\n", status);
 746                 goto err;
 747         }
 748
 749         status = ath10k_bmi_done(ar);
 750         if (status)
 751                 goto err;
 752
 753         status = ath10k_wmi_attach(ar);
 754         if (status) {
 755                 ath10k_err(ar, "WMI attach failed: %d\n", status);
 756                 goto err;
 757         }
 758
 759         status = ath10k_htt_init(ar);
 760         if (status) {
 761                 ath10k_err(ar, "failed to init htt: %d\n", status);
 762                 goto err_wmi_detach;
 763         }
 764
 765         status = ath10k_htt_tx_alloc(&ar->htt);
 766         if (status) {
 767                 ath10k_err(ar, "failed to alloc htt tx: %d\n", status);
 768                 goto err_wmi_detach;
 769         }
 770
 771         status = ath10k_htt_rx_alloc(&ar->htt);
 772         if (status) {
 773                 ath10k_err(ar, "failed to alloc htt rx: %d\n", status);
 774                 goto err_htt_tx_detach;
 775         }
 776
 777         status = ath10k_hif_start(ar);
 778         if (status) {
 779                 ath10k_err(ar, "could not start HIF: %d\n", status);
 780                 goto err_htt_rx_detach;
 781         }
 782
 783         status = ath10k_htc_wait_target(&ar->htc);
 784         if (status) {
 785                 ath10k_err(ar, "failed to connect to HTC: %d\n", status);
 786                 goto err_hif_stop;
 787         }
 788
 789         if (mode == ATH10K_FIRMWARE_MODE_NORMAL) {
 790                 status = ath10k_htt_connect(&ar->htt);
 791                 if (status) {
 792                         ath10k_err(ar, "failed to connect htt (%d)\n", status);
 793                         goto err_hif_stop;
 794                 }
 795         }
 796
 797         status = ath10k_wmi_connect(ar);
 798         if (status) {
 799                 ath10k_err(ar, "could not connect wmi: %d\n", status);
 800                 goto err_hif_stop;
 801         }
 802
 803         status = ath10k_htc_start(&ar->htc);
 804         if (status) {
 805                 ath10k_err(ar, "failed to start htc: %d\n", status);
 806                 goto err_hif_stop;
 807         }
 808
 809         if (mode == ATH10K_FIRMWARE_MODE_NORMAL) {
 810                 status = ath10k_wmi_wait_for_service_ready(ar);
 811                 if (status <= 0) {
 812                         ath10k_warn(ar, "wmi service ready event not received");
 813                         status = -ETIMEDOUT;
 814                         goto err_hif_stop;
 815                 }
 816         }
 817
 818         ath10k_dbg(ar, ATH10K_DBG_BOOT, "firmware %s booted\n",
 819                    ar->hw->wiphy->fw_version);
 820
 821         status = ath10k_wmi_cmd_init(ar);
 822         if (status) {
 823                 ath10k_err(ar, "could not send WMI init command (%d)\n",
 824                            status);
 825                 goto err_hif_stop;
 826         }
 827
 828         status = ath10k_wmi_wait_for_unified_ready(ar);
 829         if (status <= 0) {
 830                 ath10k_err(ar, "wmi unified ready event not received\n");
 831                 status = -ETIMEDOUT;
 832                 goto err_hif_stop;
 833         }
 834
 835         /* we don't care about HTT in UTF mode */
 836         if (mode == ATH10K_FIRMWARE_MODE_NORMAL) {
 837                 status = ath10k_htt_setup(&ar->htt);
 838                 if (status) {
 839                         ath10k_err(ar, "failed to setup htt: %d\n", status);
 840                         goto err_hif_stop;
 841                 }
 842         }
 843
 844         status = ath10k_debug_start(ar);
 845         if (status)
 846                 goto err_hif_stop;
 847
 848         if (test_bit(ATH10K_FW_FEATURE_WMI_10X, ar->fw_features))
 849                 ar->free_vdev_map = (1 << TARGET_10X_NUM_VDEVS) - 1;
 850         else
 851                 ar->free_vdev_map = (1 << TARGET_NUM_VDEVS) - 1;
 852
 853         INIT_LIST_HEAD(&ar->arvifs);
 854
 855         return 0;
 856
 857 err_hif_stop:
 858         ath10k_hif_stop(ar);
 859 err_htt_rx_detach:
 860         ath10k_htt_rx_free(&ar->htt);
 861 err_htt_tx_detach:
 862         ath10k_htt_tx_free(&ar->htt);
 863 err_wmi_detach:
 864         ath10k_wmi_detach(ar);
 865 err:
 866         return status;
 867 }
 868 EXPORT_SYMBOL(ath10k_core_start);
 869
 870 int ath10k_wait_for_suspend(struct ath10k *ar, u32 suspend_opt)
 871 {
 872         int ret;
 873
 874         reinit_completion(&ar->target_suspend);
 875
 876         ret = ath10k_wmi_pdev_suspend_target(ar, suspend_opt);
 877         if (ret) {
 878                 ath10k_warn(ar, "could not suspend target (%d)\n", ret);
 879                 return ret;
 880         }
 881
 882         ret = wait_for_completion_timeout(&ar->target_suspend, 1 * HZ);
 883
 884         if (ret == 0) {
 885                 ath10k_warn(ar, "suspend timed out - target pause event never came\n");
 886                 return -ETIMEDOUT;
 887         }
 888
 889         return 0;
 890 }
 891
 892 void ath10k_core_stop(struct ath10k *ar)
 893 {
 894         lockdep_assert_held(&ar->conf_mutex);
 895
 896         /* try to suspend target */
 897         if (ar->state != ATH10K_STATE_RESTARTING &&
 898             ar->state != ATH10K_STATE_UTF)
 899                 ath10k_wait_for_suspend(ar, WMI_PDEV_SUSPEND_AND_DISABLE_INTR);
 900
 901         ath10k_debug_stop(ar);
 902         ath10k_hif_stop(ar);
 903         ath10k_htt_tx_free(&ar->htt);
 904         ath10k_htt_rx_free(&ar->htt);
 905         ath10k_wmi_detach(ar);
 906 }
 907 EXPORT_SYMBOL(ath10k_core_stop);
 908
 909 /* mac80211 manages fw/hw initialization through start/stop hooks. However in
 910  * order to know what hw capabilities should be advertised to mac80211 it is
 911  * necessary to load the firmware (and tear it down immediately since start
 912  * hook will try to init it again) before registering */
 913 static int ath10k_core_probe_fw(struct ath10k *ar)
 914 {
 915         struct bmi_target_info target_info;
 916         int ret = 0;
 917
 918         ret = ath10k_hif_power_up(ar);
 919         if (ret) {
 920                 ath10k_err(ar, "could not start pci hif (%d)\n", ret);
 921                 return ret;
 922         }
 923
 924         memset(&target_info, 0, sizeof(target_info));
 925         ret = ath10k_bmi_get_target_info(ar, &target_info);
 926         if (ret) {
 927                 ath10k_err(ar, "could not get target info (%d)\n", ret);
 928                 ath10k_hif_power_down(ar);
 929                 return ret;
 930         }
 931
 932         ar->target_version = target_info.version;
 933         ar->hw->wiphy->hw_version = target_info.version;
 934
 935         ret = ath10k_init_hw_params(ar);
 936         if (ret) {
 937                 ath10k_err(ar, "could not get hw params (%d)\n", ret);
 938                 ath10k_hif_power_down(ar);
 939                 return ret;
 940         }
 941
 942         ret = ath10k_core_fetch_firmware_files(ar);
 943         if (ret) {
 944                 ath10k_err(ar, "could not fetch firmware files (%d)\n", ret);
 945                 ath10k_hif_power_down(ar);
 946                 return ret;
 947         }
 948
 949         mutex_lock(&ar->conf_mutex);
 950
 951         ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_NORMAL);
 952         if (ret) {
 953                 ath10k_err(ar, "could not init core (%d)\n", ret);
 954                 ath10k_core_free_firmware_files(ar);
 955                 ath10k_hif_power_down(ar);
 956                 mutex_unlock(&ar->conf_mutex);
 957                 return ret;
 958         }
 959
 960         ath10k_print_driver_info(ar);
 961         ath10k_core_stop(ar);
 962
 963         mutex_unlock(&ar->conf_mutex);
 964
 965         ath10k_hif_power_down(ar);
 966         return 0;
 967 }
 968
 969 static int ath10k_core_check_chip_id(struct ath10k *ar)
 970 {
 971         u32 hw_revision = MS(ar->chip_id, SOC_CHIP_ID_REV);
 972
 973         ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot chip_id 0x%08x hw_revision 0x%x\n",
 974                    ar->chip_id, hw_revision);
 975
 976         /* Check that we are not using hw1.0 (some of them have same pci id
 977          * as hw2.0) before doing anything else as ath10k crashes horribly
 978          * due to missing hw1.0 workarounds. */
 979         switch (hw_revision) {
 980         case QCA988X_HW_1_0_CHIP_ID_REV:
 981                 ath10k_err(ar, "ERROR: qca988x hw1.0 is not supported\n");
 982                 return -EOPNOTSUPP;
 983
 984         case QCA988X_HW_2_0_CHIP_ID_REV:
 985                 /* known hardware revision, continue normally */
 986                 return 0;
 987
 988         default:
 989                 ath10k_warn(ar, "Warning: hardware revision unknown (0x%x), expect problems\n",
 990                             ar->chip_id);
 991                 return 0;
 992         }
 993
 994         return 0;
 995 }
 996
 997 static void ath10k_core_register_work(struct work_struct *work)
 998 {
 999         struct ath10k *ar = container_of(work, struct ath10k, register_work);
1000         int status;
1001
1002         status = ath10k_core_probe_fw(ar);
1003         if (status) {
1004                 ath10k_err(ar, "could not probe fw (%d)\n", status);
1005                 goto err;
1006         }
1007
1008         status = ath10k_mac_register(ar);
1009         if (status) {
1010                 ath10k_err(ar, "could not register to mac80211 (%d)\n", status);
1011                 goto err_release_fw;
1012         }
1013
1014         status = ath10k_debug_register(ar);
1015         if (status) {
1016                 ath10k_err(ar, "unable to initialize debugfs\n");
1017                 goto err_unregister_mac;
1018         }
1019
1020         status = ath10k_spectral_create(ar);
1021         if (status) {
1022                 ath10k_err(ar, "failed to initialize spectral\n");
1023                 goto err_debug_destroy;
1024         }
1025
1026         set_bit(ATH10K_FLAG_CORE_REGISTERED, &ar->dev_flags);
1027         return;
1028
1029 err_debug_destroy:
1030         ath10k_debug_destroy(ar);
1031 err_unregister_mac:
1032         ath10k_mac_unregister(ar);
1033 err_release_fw:
1034         ath10k_core_free_firmware_files(ar);
1035 err:
1036         /* TODO: It's probably a good idea to release device from the driver
1037          * but calling device_release_driver() here will cause a deadlock.
1038          */
1039         return;
1040 }
1041
1042 int ath10k_core_register(struct ath10k *ar, u32 chip_id)
1043 {
1044         int status;
1045
1046         ar->chip_id = chip_id;
1047
1048         status = ath10k_core_check_chip_id(ar);
1049         if (status) {
1050                 ath10k_err(ar, "Unsupported chip id 0x%08x\n", ar->chip_id);
1051                 return status;
1052         }
1053
1054         queue_work(ar->workqueue, &ar->register_work);
1055
1056         return 0;
1057 }
1058 EXPORT_SYMBOL(ath10k_core_register);
1059
1060 void ath10k_core_unregister(struct ath10k *ar)
1061 {
1062         cancel_work_sync(&ar->register_work);
1063
1064         if (!test_bit(ATH10K_FLAG_CORE_REGISTERED, &ar->dev_flags))
1065                 return;
1066
1067         /* Stop spectral before unregistering from mac80211 to remove the
1068          * relayfs debugfs file cleanly. Otherwise the parent debugfs tree
1069          * would be already be free'd recursively, leading to a double free.
1070          */
1071         ath10k_spectral_destroy(ar);
1072
1073         /* We must unregister from mac80211 before we stop HTC and HIF.
1074          * Otherwise we will fail to submit commands to FW and mac80211 will be
1075          * unhappy about callback failures. */
1076         ath10k_mac_unregister(ar);
1077
1078         ath10k_testmode_destroy(ar);
1079
1080         ath10k_core_free_firmware_files(ar);
1081
1082         ath10k_debug_unregister(ar);
1083 }
1084 EXPORT_SYMBOL(ath10k_core_unregister);
1085
1086 struct ath10k *ath10k_core_create(size_t priv_size, struct device *dev,
1087                                   const struct ath10k_hif_ops *hif_ops)
1088 {
1089         struct ath10k *ar;
1090         int ret;
1091
1092         ar = ath10k_mac_create(priv_size);
1093         if (!ar)
1094                 return NULL;
1095
1096         ar->ath_common.priv = ar;
1097         ar->ath_common.hw = ar->hw;
1098
1099         ar->p2p = !!ath10k_p2p;
1100         ar->dev = dev;
1101
1102         ar->hif.ops = hif_ops;
1103
1104         init_completion(&ar->scan.started);
1105         init_completion(&ar->scan.completed);
1106         init_completion(&ar->scan.on_channel);
1107         init_completion(&ar->target_suspend);
1108
1109         init_completion(&ar->install_key_done);
1110         init_completion(&ar->vdev_setup_done);
1111
1112         INIT_DELAYED_WORK(&ar->scan.timeout, ath10k_scan_timeout_work);
1113
1114         ar->workqueue = create_singlethread_workqueue("ath10k_wq");
1115         if (!ar->workqueue)
1116                 goto err_free_mac;
1117
1118         mutex_init(&ar->conf_mutex);
1119         spin_lock_init(&ar->data_lock);
1120
1121         INIT_LIST_HEAD(&ar->peers);
1122         init_waitqueue_head(&ar->peer_mapping_wq);
1123
1124         init_completion(&ar->offchan_tx_completed);
1125         INIT_WORK(&ar->offchan_tx_work, ath10k_offchan_tx_work);
1126         skb_queue_head_init(&ar->offchan_tx_queue);
1127
1128         INIT_WORK(&ar->wmi_mgmt_tx_work, ath10k_mgmt_over_wmi_tx_work);
1129         skb_queue_head_init(&ar->wmi_mgmt_tx_queue);
1130
1131         INIT_WORK(&ar->register_work, ath10k_core_register_work);
1132         INIT_WORK(&ar->restart_work, ath10k_core_restart);
1133
1134         ret = ath10k_debug_create(ar);
1135         if (ret)
1136                 goto err_free_wq;
1137
1138         return ar;
1139
1140 err_free_wq:
1141         destroy_workqueue(ar->workqueue);
1142
1143 err_free_mac:
1144         ath10k_mac_destroy(ar);
1145
1146         return NULL;
1147 }
1148 EXPORT_SYMBOL(ath10k_core_create);
1149
1150 void ath10k_core_destroy(struct ath10k *ar)
1151 {
1152         flush_workqueue(ar->workqueue);
1153         destroy_workqueue(ar->workqueue);
1154
1155         ath10k_debug_destroy(ar);
1156         ath10k_mac_destroy(ar);
1157 }
1158 EXPORT_SYMBOL(ath10k_core_destroy);
1159
1160 MODULE_AUTHOR("Qualcomm Atheros");
1161 MODULE_DESCRIPTION("Core module for QCA988X PCIe devices.");
1162 MODULE_LICENSE("Dual BSD/GPL");