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

   1 /*
   2  * Copyright (c) 2005-2011 Atheros Communications Inc.
   3  * Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #include <linux/module.h>
  19 #include <linux/firmware.h>
  20
  21 #include "core.h"
  22 #include "mac.h"
  23 #include "htc.h"
  24 #include "hif.h"
  25 #include "wmi.h"
  26 #include "bmi.h"
  27 #include "debug.h"
  28 #include "htt.h"
  29
  30 unsigned int ath10k_debug_mask;
  31 static bool uart_print;
  32 static unsigned int ath10k_p2p;
  33 module_param_named(debug_mask, ath10k_debug_mask, uint, 0644);
  34 module_param(uart_print, bool, 0644);
  35 module_param_named(p2p, ath10k_p2p, uint, 0644);
  36 MODULE_PARM_DESC(debug_mask, "Debugging mask");
  37 MODULE_PARM_DESC(uart_print, "Uart target debugging");
  38 MODULE_PARM_DESC(p2p, "Enable ath10k P2P support");
  39
  40 static const struct ath10k_hw_params ath10k_hw_params_list[] = {
  41         {
  42                 .id = QCA988X_HW_2_0_VERSION,
  43                 .name = "qca988x hw2.0",
  44                 .patch_load_addr = QCA988X_HW_2_0_PATCH_LOAD_ADDR,
  45                 .fw = {
  46                         .dir = QCA988X_HW_2_0_FW_DIR,
  47                         .fw = QCA988X_HW_2_0_FW_FILE,
  48                         .otp = QCA988X_HW_2_0_OTP_FILE,
  49                         .board = QCA988X_HW_2_0_BOARD_DATA_FILE,
  50                 },
  51         },
  52 };
  53
  54 static void ath10k_send_suspend_complete(struct ath10k *ar)
  55 {
  56         ath10k_dbg(ATH10K_DBG_BOOT, "boot suspend complete\n");
  57
  58         complete(&ar->target_suspend);
  59 }
  60
  61 static int ath10k_init_connect_htc(struct ath10k *ar)
  62 {
  63         int status;
  64
  65         status = ath10k_wmi_connect_htc_service(ar);
  66         if (status)
  67                 goto conn_fail;
  68
  69         /* Start HTC */
  70         status = ath10k_htc_start(&ar->htc);
  71         if (status)
  72                 goto conn_fail;
  73
  74         /* Wait for WMI event to be ready */
  75         status = ath10k_wmi_wait_for_service_ready(ar);
  76         if (status <= 0) {
  77                 ath10k_warn("wmi service ready event not received");
  78                 status = -ETIMEDOUT;
  79                 goto timeout;
  80         }
  81
  82         ath10k_dbg(ATH10K_DBG_BOOT, "boot wmi ready\n");
  83         return 0;
  84
  85 timeout:
  86         ath10k_htc_stop(&ar->htc);
  87 conn_fail:
  88         return status;
  89 }
  90
  91 static int ath10k_init_configure_target(struct ath10k *ar)
  92 {
  93         u32 param_host;
  94         int ret;
  95
  96         /* tell target which HTC version it is used*/
  97         ret = ath10k_bmi_write32(ar, hi_app_host_interest,
  98                                  HTC_PROTOCOL_VERSION);
  99         if (ret) {
 100                 ath10k_err("settings HTC version failed\n");
 101                 return ret;
 102         }
 103
 104         /* set the firmware mode to STA/IBSS/AP */
 105         ret = ath10k_bmi_read32(ar, hi_option_flag, &param_host);
 106         if (ret) {
 107                 ath10k_err("setting firmware mode (1/2) failed\n");
 108                 return ret;
 109         }
 110
 111         /* TODO following parameters need to be re-visited. */
 112         /* num_device */
 113         param_host |= (1 << HI_OPTION_NUM_DEV_SHIFT);
 114         /* Firmware mode */
 115         /* FIXME: Why FW_MODE_AP ??.*/
 116         param_host |= (HI_OPTION_FW_MODE_AP << HI_OPTION_FW_MODE_SHIFT);
 117         /* mac_addr_method */
 118         param_host |= (1 << HI_OPTION_MAC_ADDR_METHOD_SHIFT);
 119         /* firmware_bridge */
 120         param_host |= (0 << HI_OPTION_FW_BRIDGE_SHIFT);
 121         /* fwsubmode */
 122         param_host |= (0 << HI_OPTION_FW_SUBMODE_SHIFT);
 123
 124         ret = ath10k_bmi_write32(ar, hi_option_flag, param_host);
 125         if (ret) {
 126                 ath10k_err("setting firmware mode (2/2) failed\n");
 127                 return ret;
 128         }
 129
 130         /* We do all byte-swapping on the host */
 131         ret = ath10k_bmi_write32(ar, hi_be, 0);
 132         if (ret) {
 133                 ath10k_err("setting host CPU BE mode failed\n");
 134                 return ret;
 135         }
 136
 137         /* FW descriptor/Data swap flags */
 138         ret = ath10k_bmi_write32(ar, hi_fw_swap, 0);
 139
 140         if (ret) {
 141                 ath10k_err("setting FW data/desc swap flags failed\n");
 142                 return ret;
 143         }
 144
 145         return 0;
 146 }
 147
 148 static const struct firmware *ath10k_fetch_fw_file(struct ath10k *ar,
 149                                                    const char *dir,
 150                                                    const char *file)
 151 {
 152         char filename[100];
 153         const struct firmware *fw;
 154         int ret;
 155
 156         if (file == NULL)
 157                 return ERR_PTR(-ENOENT);
 158
 159         if (dir == NULL)
 160                 dir = ".";
 161
 162         snprintf(filename, sizeof(filename), "%s/%s", dir, file);
 163         ret = request_firmware(&fw, filename, ar->dev);
 164         if (ret)
 165                 return ERR_PTR(ret);
 166
 167         return fw;
 168 }
 169
 170 static int ath10k_push_board_ext_data(struct ath10k *ar)
 171 {
 172         u32 board_data_size = QCA988X_BOARD_DATA_SZ;
 173         u32 board_ext_data_size = QCA988X_BOARD_EXT_DATA_SZ;
 174         u32 board_ext_data_addr;
 175         int ret;
 176
 177         ret = ath10k_bmi_read32(ar, hi_board_ext_data, &board_ext_data_addr);
 178         if (ret) {
 179                 ath10k_err("could not read board ext data addr (%d)\n", ret);
 180                 return ret;
 181         }
 182
 183         ath10k_dbg(ATH10K_DBG_BOOT,
 184                    "boot push board extended data addr 0x%x\n",
 185                    board_ext_data_addr);
 186
 187         if (board_ext_data_addr == 0)
 188                 return 0;
 189
 190         if (ar->board_len != (board_data_size + board_ext_data_size)) {
 191                 ath10k_err("invalid board (ext) data sizes %zu != %d+%d\n",
 192                            ar->board_len, board_data_size, board_ext_data_size);
 193                 return -EINVAL;
 194         }
 195
 196         ret = ath10k_bmi_write_memory(ar, board_ext_data_addr,
 197                                       ar->board_data + board_data_size,
 198                                       board_ext_data_size);
 199         if (ret) {
 200                 ath10k_err("could not write board ext data (%d)\n", ret);
 201                 return ret;
 202         }
 203
 204         ret = ath10k_bmi_write32(ar, hi_board_ext_data_config,
 205                                  (board_ext_data_size << 16) | 1);
 206         if (ret) {
 207                 ath10k_err("could not write board ext data bit (%d)\n", ret);
 208                 return ret;
 209         }
 210
 211         return 0;
 212 }
 213
 214 static int ath10k_download_board_data(struct ath10k *ar)
 215 {
 216         u32 board_data_size = QCA988X_BOARD_DATA_SZ;
 217         u32 address;
 218         int ret;
 219
 220         ret = ath10k_push_board_ext_data(ar);
 221         if (ret) {
 222                 ath10k_err("could not push board ext data (%d)\n", ret);
 223                 goto exit;
 224         }
 225
 226         ret = ath10k_bmi_read32(ar, hi_board_data, &address);
 227         if (ret) {
 228                 ath10k_err("could not read board data addr (%d)\n", ret);
 229                 goto exit;
 230         }
 231
 232         ret = ath10k_bmi_write_memory(ar, address, ar->board_data,
 233                                       min_t(u32, board_data_size,
 234                                             ar->board_len));
 235         if (ret) {
 236                 ath10k_err("could not write board data (%d)\n", ret);
 237                 goto exit;
 238         }
 239
 240         ret = ath10k_bmi_write32(ar, hi_board_data_initialized, 1);
 241         if (ret) {
 242                 ath10k_err("could not write board data bit (%d)\n", ret);
 243                 goto exit;
 244         }
 245
 246 exit:
 247         return ret;
 248 }
 249
 250 static int ath10k_download_and_run_otp(struct ath10k *ar)
 251 {
 252         u32 result, address = ar->hw_params.patch_load_addr;
 253         int ret;
 254
 255         /* OTP is optional */
 256
 257         if (!ar->otp_data || !ar->otp_len) {
 258                 ath10k_warn("Not running otp, calibration will be incorrect!\n");
 259                 return 0;
 260         }
 261
 262         ath10k_dbg(ATH10K_DBG_BOOT, "boot upload otp to 0x%x len %zd\n",
 263                    address, ar->otp_len);
 264
 265         ret = ath10k_bmi_fast_download(ar, address, ar->otp_data, ar->otp_len);
 266         if (ret) {
 267                 ath10k_err("could not write otp (%d)\n", ret);
 268                 return ret;
 269         }
 270
 271         ret = ath10k_bmi_execute(ar, address, 0, &result);
 272         if (ret) {
 273                 ath10k_err("could not execute otp (%d)\n", ret);
 274                 return ret;
 275         }
 276
 277         ath10k_dbg(ATH10K_DBG_BOOT, "boot otp execute result %d\n", result);
 278
 279         if (result != 0) {
 280                 ath10k_err("otp calibration failed: %d", result);
 281                 return -EINVAL;
 282         }
 283
 284         return 0;
 285 }
 286
 287 static int ath10k_download_fw(struct ath10k *ar)
 288 {
 289         u32 address;
 290         int ret;
 291
 292         address = ar->hw_params.patch_load_addr;
 293
 294         ret = ath10k_bmi_fast_download(ar, address, ar->firmware_data,
 295                                        ar->firmware_len);
 296         if (ret) {
 297                 ath10k_err("could not write fw (%d)\n", ret);
 298                 goto exit;
 299         }
 300
 301 exit:
 302         return ret;
 303 }
 304
 305 static void ath10k_core_free_firmware_files(struct ath10k *ar)
 306 {
 307         if (ar->board && !IS_ERR(ar->board))
 308                 release_firmware(ar->board);
 309
 310         if (ar->otp && !IS_ERR(ar->otp))
 311                 release_firmware(ar->otp);
 312
 313         if (ar->firmware && !IS_ERR(ar->firmware))
 314                 release_firmware(ar->firmware);
 315
 316         ar->board = NULL;
 317         ar->board_data = NULL;
 318         ar->board_len = 0;
 319
 320         ar->otp = NULL;
 321         ar->otp_data = NULL;
 322         ar->otp_len = 0;
 323
 324         ar->firmware = NULL;
 325         ar->firmware_data = NULL;
 326         ar->firmware_len = 0;
 327 }
 328
 329 static int ath10k_core_fetch_firmware_api_1(struct ath10k *ar)
 330 {
 331         int ret = 0;
 332
 333         if (ar->hw_params.fw.fw == NULL) {
 334                 ath10k_err("firmware file not defined\n");
 335                 return -EINVAL;
 336         }
 337
 338         if (ar->hw_params.fw.board == NULL) {
 339                 ath10k_err("board data file not defined");
 340                 return -EINVAL;
 341         }
 342
 343         ar->board = ath10k_fetch_fw_file(ar,
 344                                          ar->hw_params.fw.dir,
 345                                          ar->hw_params.fw.board);
 346         if (IS_ERR(ar->board)) {
 347                 ret = PTR_ERR(ar->board);
 348                 ath10k_err("could not fetch board data (%d)\n", ret);
 349                 goto err;
 350         }
 351
 352         ar->board_data = ar->board->data;
 353         ar->board_len = ar->board->size;
 354
 355         ar->firmware = ath10k_fetch_fw_file(ar,
 356                                             ar->hw_params.fw.dir,
 357                                             ar->hw_params.fw.fw);
 358         if (IS_ERR(ar->firmware)) {
 359                 ret = PTR_ERR(ar->firmware);
 360                 ath10k_err("could not fetch firmware (%d)\n", ret);
 361                 goto err;
 362         }
 363
 364         ar->firmware_data = ar->firmware->data;
 365         ar->firmware_len = ar->firmware->size;
 366
 367         /* OTP may be undefined. If so, don't fetch it at all */
 368         if (ar->hw_params.fw.otp == NULL)
 369                 return 0;
 370
 371         ar->otp = ath10k_fetch_fw_file(ar,
 372                                        ar->hw_params.fw.dir,
 373                                        ar->hw_params.fw.otp);
 374         if (IS_ERR(ar->otp)) {
 375                 ret = PTR_ERR(ar->otp);
 376                 ath10k_err("could not fetch otp (%d)\n", ret);
 377                 goto err;
 378         }
 379
 380         ar->otp_data = ar->otp->data;
 381         ar->otp_len = ar->otp->size;
 382
 383         return 0;
 384
 385 err:
 386         ath10k_core_free_firmware_files(ar);
 387         return ret;
 388 }
 389
 390 static int ath10k_core_fetch_firmware_api_n(struct ath10k *ar, const char *name)
 391 {
 392         size_t magic_len, len, ie_len;
 393         int ie_id, i, index, bit, ret;
 394         struct ath10k_fw_ie *hdr;
 395         const u8 *data;
 396         __le32 *timestamp;
 397
 398         /* first fetch the firmware file (firmware-*.bin) */
 399         ar->firmware = ath10k_fetch_fw_file(ar, ar->hw_params.fw.dir, name);
 400         if (IS_ERR(ar->firmware)) {
 401                 ath10k_err("Could not fetch firmware file '%s': %ld\n",
 402                            name, PTR_ERR(ar->firmware));
 403                 return PTR_ERR(ar->firmware);
 404         }
 405
 406         data = ar->firmware->data;
 407         len = ar->firmware->size;
 408
 409         /* magic also includes the null byte, check that as well */
 410         magic_len = strlen(ATH10K_FIRMWARE_MAGIC) + 1;
 411
 412         if (len < magic_len) {
 413                 ath10k_err("firmware image too small to contain magic: %zu\n",
 414                            len);
 415                 ret = -EINVAL;
 416                 goto err;
 417         }
 418
 419         if (memcmp(data, ATH10K_FIRMWARE_MAGIC, magic_len) != 0) {
 420                 ath10k_err("Invalid firmware magic\n");
 421                 ret = -EINVAL;
 422                 goto err;
 423         }
 424
 425         /* jump over the padding */
 426         magic_len = ALIGN(magic_len, 4);
 427
 428         len -= magic_len;
 429         data += magic_len;
 430
 431         /* loop elements */
 432         while (len > sizeof(struct ath10k_fw_ie)) {
 433                 hdr = (struct ath10k_fw_ie *)data;
 434
 435                 ie_id = le32_to_cpu(hdr->id);
 436                 ie_len = le32_to_cpu(hdr->len);
 437
 438                 len -= sizeof(*hdr);
 439                 data += sizeof(*hdr);
 440
 441                 if (len < ie_len) {
 442                         ath10k_err("Invalid length for FW IE %d (%zu < %zu)\n",
 443                                    ie_id, len, ie_len);
 444                         ret = -EINVAL;
 445                         goto err;
 446                 }
 447
 448                 switch (ie_id) {
 449                 case ATH10K_FW_IE_FW_VERSION:
 450                         if (ie_len > sizeof(ar->hw->wiphy->fw_version) - 1)
 451                                 break;
 452
 453                         memcpy(ar->hw->wiphy->fw_version, data, ie_len);
 454                         ar->hw->wiphy->fw_version[ie_len] = '\0';
 455
 456                         ath10k_dbg(ATH10K_DBG_BOOT,
 457                                    "found fw version %s\n",
 458                                     ar->hw->wiphy->fw_version);
 459                         break;
 460                 case ATH10K_FW_IE_TIMESTAMP:
 461                         if (ie_len != sizeof(u32))
 462                                 break;
 463
 464                         timestamp = (__le32 *)data;
 465
 466                         ath10k_dbg(ATH10K_DBG_BOOT, "found fw timestamp %d\n",
 467                                    le32_to_cpup(timestamp));
 468                         break;
 469                 case ATH10K_FW_IE_FEATURES:
 470                         ath10k_dbg(ATH10K_DBG_BOOT,
 471                                    "found firmware features ie (%zd B)\n",
 472                                    ie_len);
 473
 474                         for (i = 0; i < ATH10K_FW_FEATURE_COUNT; i++) {
 475                                 index = i / 8;
 476                                 bit = i % 8;
 477
 478                                 if (index == ie_len)
 479                                         break;
 480
 481                                 if (data[index] & (1 << bit)) {
 482                                         ath10k_dbg(ATH10K_DBG_BOOT,
 483                                                    "Enabling feature bit: %i\n",
 484                                                    i);
 485                                         __set_bit(i, ar->fw_features);
 486                                 }
 487                         }
 488
 489                         ath10k_dbg_dump(ATH10K_DBG_BOOT, "features", "",
 490                                         ar->fw_features,
 491                                         sizeof(ar->fw_features));
 492                         break;
 493                 case ATH10K_FW_IE_FW_IMAGE:
 494                         ath10k_dbg(ATH10K_DBG_BOOT,
 495                                    "found fw image ie (%zd B)\n",
 496                                    ie_len);
 497
 498                         ar->firmware_data = data;
 499                         ar->firmware_len = ie_len;
 500
 501                         break;
 502                 case ATH10K_FW_IE_OTP_IMAGE:
 503                         ath10k_dbg(ATH10K_DBG_BOOT,
 504                                    "found otp image ie (%zd B)\n",
 505                                    ie_len);
 506
 507                         ar->otp_data = data;
 508                         ar->otp_len = ie_len;
 509
 510                         break;
 511                 default:
 512                         ath10k_warn("Unknown FW IE: %u\n",
 513                                     le32_to_cpu(hdr->id));
 514                         break;
 515                 }
 516
 517                 /* jump over the padding */
 518                 ie_len = ALIGN(ie_len, 4);
 519
 520                 len -= ie_len;
 521                 data += ie_len;
 522         }
 523
 524         if (!ar->firmware_data || !ar->firmware_len) {
 525                 ath10k_warn("No ATH10K_FW_IE_FW_IMAGE found from %s, skipping\n",
 526                             name);
 527                 ret = -ENOMEDIUM;
 528                 goto err;
 529         }
 530
 531         /* now fetch the board file */
 532         if (ar->hw_params.fw.board == NULL) {
 533                 ath10k_err("board data file not defined");
 534                 ret = -EINVAL;
 535                 goto err;
 536         }
 537
 538         ar->board = ath10k_fetch_fw_file(ar,
 539                                          ar->hw_params.fw.dir,
 540                                          ar->hw_params.fw.board);
 541         if (IS_ERR(ar->board)) {
 542                 ret = PTR_ERR(ar->board);
 543                 ath10k_err("could not fetch board data (%d)\n", ret);
 544                 goto err;
 545         }
 546
 547         ar->board_data = ar->board->data;
 548         ar->board_len = ar->board->size;
 549
 550         return 0;
 551
 552 err:
 553         ath10k_core_free_firmware_files(ar);
 554         return ret;
 555 }
 556
 557 static int ath10k_core_fetch_firmware_files(struct ath10k *ar)
 558 {
 559         int ret;
 560
 561         ret = ath10k_core_fetch_firmware_api_n(ar, ATH10K_FW_API2_FILE);
 562         if (ret == 0) {
 563                 ar->fw_api = 2;
 564                 goto out;
 565         }
 566
 567         ret = ath10k_core_fetch_firmware_api_1(ar);
 568         if (ret)
 569                 return ret;
 570
 571         ar->fw_api = 1;
 572
 573 out:
 574         ath10k_dbg(ATH10K_DBG_BOOT, "using fw api %d\n", ar->fw_api);
 575
 576         return 0;
 577 }
 578
 579 static int ath10k_init_download_firmware(struct ath10k *ar)
 580 {
 581         int ret;
 582
 583         ret = ath10k_download_board_data(ar);
 584         if (ret)
 585                 return ret;
 586
 587         ret = ath10k_download_and_run_otp(ar);
 588         if (ret)
 589                 return ret;
 590
 591         ret = ath10k_download_fw(ar);
 592         if (ret)
 593                 return ret;
 594
 595         return ret;
 596 }
 597
 598 static int ath10k_init_uart(struct ath10k *ar)
 599 {
 600         int ret;
 601
 602         /*
 603          * Explicitly setting UART prints to zero as target turns it on
 604          * based on scratch registers.
 605          */
 606         ret = ath10k_bmi_write32(ar, hi_serial_enable, 0);
 607         if (ret) {
 608                 ath10k_warn("could not disable UART prints (%d)\n", ret);
 609                 return ret;
 610         }
 611
 612         if (!uart_print)
 613                 return 0;
 614
 615         ret = ath10k_bmi_write32(ar, hi_dbg_uart_txpin, 7);
 616         if (ret) {
 617                 ath10k_warn("could not enable UART prints (%d)\n", ret);
 618                 return ret;
 619         }
 620
 621         ret = ath10k_bmi_write32(ar, hi_serial_enable, 1);
 622         if (ret) {
 623                 ath10k_warn("could not enable UART prints (%d)\n", ret);
 624                 return ret;
 625         }
 626
 627         /* Set the UART baud rate to 19200. */
 628         ret = ath10k_bmi_write32(ar, hi_desired_baud_rate, 19200);
 629         if (ret) {
 630                 ath10k_warn("could not set the baud rate (%d)\n", ret);
 631                 return ret;
 632         }
 633
 634         ath10k_info("UART prints enabled\n");
 635         return 0;
 636 }
 637
 638 static int ath10k_init_hw_params(struct ath10k *ar)
 639 {
 640         const struct ath10k_hw_params *uninitialized_var(hw_params);
 641         int i;
 642
 643         for (i = 0; i < ARRAY_SIZE(ath10k_hw_params_list); i++) {
 644                 hw_params = &ath10k_hw_params_list[i];
 645
 646                 if (hw_params->id == ar->target_version)
 647                         break;
 648         }
 649
 650         if (i == ARRAY_SIZE(ath10k_hw_params_list)) {
 651                 ath10k_err("Unsupported hardware version: 0x%x\n",
 652                            ar->target_version);
 653                 return -EINVAL;
 654         }
 655
 656         ar->hw_params = *hw_params;
 657
 658         ath10k_dbg(ATH10K_DBG_BOOT, "Hardware name %s version 0x%x\n",
 659                    ar->hw_params.name, ar->target_version);
 660
 661         return 0;
 662 }
 663
 664 static void ath10k_core_restart(struct work_struct *work)
 665 {
 666         struct ath10k *ar = container_of(work, struct ath10k, restart_work);
 667
 668         mutex_lock(&ar->conf_mutex);
 669
 670         switch (ar->state) {
 671         case ATH10K_STATE_ON:
 672                 ath10k_halt(ar);
 673                 ar->state = ATH10K_STATE_RESTARTING;
 674                 ieee80211_restart_hw(ar->hw);
 675                 break;
 676         case ATH10K_STATE_OFF:
 677                 /* this can happen if driver is being unloaded
 678                  * or if the crash happens during FW probing */
 679                 ath10k_warn("cannot restart a device that hasn't been started\n");
 680                 break;
 681         case ATH10K_STATE_RESTARTING:
 682         case ATH10K_STATE_RESTARTED:
 683                 ar->state = ATH10K_STATE_WEDGED;
 684                 /* fall through */
 685         case ATH10K_STATE_WEDGED:
 686                 ath10k_warn("device is wedged, will not restart\n");
 687                 break;
 688         }
 689
 690         mutex_unlock(&ar->conf_mutex);
 691 }
 692
 693 struct ath10k *ath10k_core_create(void *hif_priv, struct device *dev,
 694                                   const struct ath10k_hif_ops *hif_ops)
 695 {
 696         struct ath10k *ar;
 697
 698         ar = ath10k_mac_create();
 699         if (!ar)
 700                 return NULL;
 701
 702         ar->ath_common.priv = ar;
 703         ar->ath_common.hw = ar->hw;
 704
 705         ar->p2p = !!ath10k_p2p;
 706         ar->dev = dev;
 707
 708         ar->hif.priv = hif_priv;
 709         ar->hif.ops = hif_ops;
 710
 711         init_completion(&ar->scan.started);
 712         init_completion(&ar->scan.completed);
 713         init_completion(&ar->scan.on_channel);
 714         init_completion(&ar->target_suspend);
 715
 716         init_completion(&ar->install_key_done);
 717         init_completion(&ar->vdev_setup_done);
 718
 719         setup_timer(&ar->scan.timeout, ath10k_reset_scan, (unsigned long)ar);
 720
 721         ar->workqueue = create_singlethread_workqueue("ath10k_wq");
 722         if (!ar->workqueue)
 723                 goto err_wq;
 724
 725         mutex_init(&ar->conf_mutex);
 726         spin_lock_init(&ar->data_lock);
 727
 728         INIT_LIST_HEAD(&ar->peers);
 729         init_waitqueue_head(&ar->peer_mapping_wq);
 730
 731         init_completion(&ar->offchan_tx_completed);
 732         INIT_WORK(&ar->offchan_tx_work, ath10k_offchan_tx_work);
 733         skb_queue_head_init(&ar->offchan_tx_queue);
 734
 735         INIT_WORK(&ar->wmi_mgmt_tx_work, ath10k_mgmt_over_wmi_tx_work);
 736         skb_queue_head_init(&ar->wmi_mgmt_tx_queue);
 737
 738         INIT_WORK(&ar->restart_work, ath10k_core_restart);
 739
 740         return ar;
 741
 742 err_wq:
 743         ath10k_mac_destroy(ar);
 744         return NULL;
 745 }
 746 EXPORT_SYMBOL(ath10k_core_create);
 747
 748 void ath10k_core_destroy(struct ath10k *ar)
 749 {
 750         flush_workqueue(ar->workqueue);
 751         destroy_workqueue(ar->workqueue);
 752
 753         ath10k_mac_destroy(ar);
 754 }
 755 EXPORT_SYMBOL(ath10k_core_destroy);
 756
 757 int ath10k_core_start(struct ath10k *ar)
 758 {
 759         int status;
 760
 761         lockdep_assert_held(&ar->conf_mutex);
 762
 763         ath10k_bmi_start(ar);
 764
 765         if (ath10k_init_configure_target(ar)) {
 766                 status = -EINVAL;
 767                 goto err;
 768         }
 769
 770         status = ath10k_init_download_firmware(ar);
 771         if (status)
 772                 goto err;
 773
 774         status = ath10k_init_uart(ar);
 775         if (status)
 776                 goto err;
 777
 778         ar->htc.htc_ops.target_send_suspend_complete =
 779                 ath10k_send_suspend_complete;
 780
 781         status = ath10k_htc_init(ar);
 782         if (status) {
 783                 ath10k_err("could not init HTC (%d)\n", status);
 784                 goto err;
 785         }
 786
 787         status = ath10k_bmi_done(ar);
 788         if (status)
 789                 goto err;
 790
 791         status = ath10k_wmi_attach(ar);
 792         if (status) {
 793                 ath10k_err("WMI attach failed: %d\n", status);
 794                 goto err;
 795         }
 796
 797         status = ath10k_hif_start(ar);
 798         if (status) {
 799                 ath10k_err("could not start HIF: %d\n", status);
 800                 goto err_wmi_detach;
 801         }
 802
 803         status = ath10k_htc_wait_target(&ar->htc);
 804         if (status) {
 805                 ath10k_err("failed to connect to HTC: %d\n", status);
 806                 goto err_hif_stop;
 807         }
 808
 809         status = ath10k_htt_attach(ar);
 810         if (status) {
 811                 ath10k_err("could not attach htt (%d)\n", status);
 812                 goto err_hif_stop;
 813         }
 814
 815         status = ath10k_init_connect_htc(ar);
 816         if (status)
 817                 goto err_htt_detach;
 818
 819         ath10k_dbg(ATH10K_DBG_BOOT, "firmware %s booted\n",
 820                    ar->hw->wiphy->fw_version);
 821
 822         status = ath10k_wmi_cmd_init(ar);
 823         if (status) {
 824                 ath10k_err("could not send WMI init command (%d)\n", status);
 825                 goto err_disconnect_htc;
 826         }
 827
 828         status = ath10k_wmi_wait_for_unified_ready(ar);
 829         if (status <= 0) {
 830                 ath10k_err("wmi unified ready event not received\n");
 831                 status = -ETIMEDOUT;
 832                 goto err_disconnect_htc;
 833         }
 834
 835         status = ath10k_htt_attach_target(&ar->htt);
 836         if (status)
 837                 goto err_disconnect_htc;
 838
 839         status = ath10k_debug_start(ar);
 840         if (status)
 841                 goto err_disconnect_htc;
 842
 843         ar->free_vdev_map = (1 << TARGET_NUM_VDEVS) - 1;
 844         INIT_LIST_HEAD(&ar->arvifs);
 845
 846         if (!test_bit(ATH10K_FLAG_FIRST_BOOT_DONE, &ar->dev_flags))
 847                 ath10k_info("%s (0x%x) fw %s api %d htt %d.%d\n",
 848                             ar->hw_params.name, ar->target_version,
 849                             ar->hw->wiphy->fw_version, ar->fw_api,
 850                             ar->htt.target_version_major,
 851                             ar->htt.target_version_minor);
 852
 853         __set_bit(ATH10K_FLAG_FIRST_BOOT_DONE, &ar->dev_flags);
 854
 855         return 0;
 856
 857 err_disconnect_htc:
 858         ath10k_htc_stop(&ar->htc);
 859 err_htt_detach:
 860         ath10k_htt_detach(&ar->htt);
 861 err_hif_stop:
 862         ath10k_hif_stop(ar);
 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("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("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         ath10k_wait_for_suspend(ar, WMI_PDEV_SUSPEND_AND_DISABLE_INTR);
 898         ath10k_debug_stop(ar);
 899         ath10k_htc_stop(&ar->htc);
 900         ath10k_htt_detach(&ar->htt);
 901         ath10k_wmi_detach(ar);
 902 }
 903 EXPORT_SYMBOL(ath10k_core_stop);
 904
 905 /* mac80211 manages fw/hw initialization through start/stop hooks. However in
 906  * order to know what hw capabilities should be advertised to mac80211 it is
 907  * necessary to load the firmware (and tear it down immediately since start
 908  * hook will try to init it again) before registering */
 909 static int ath10k_core_probe_fw(struct ath10k *ar)
 910 {
 911         struct bmi_target_info target_info;
 912         int ret = 0;
 913
 914         ret = ath10k_hif_power_up(ar);
 915         if (ret) {
 916                 ath10k_err("could not start pci hif (%d)\n", ret);
 917                 return ret;
 918         }
 919
 920         memset(&target_info, 0, sizeof(target_info));
 921         ret = ath10k_bmi_get_target_info(ar, &target_info);
 922         if (ret) {
 923                 ath10k_err("could not get target info (%d)\n", ret);
 924                 ath10k_hif_power_down(ar);
 925                 return ret;
 926         }
 927
 928         ar->target_version = target_info.version;
 929         ar->hw->wiphy->hw_version = target_info.version;
 930
 931         ret = ath10k_init_hw_params(ar);
 932         if (ret) {
 933                 ath10k_err("could not get hw params (%d)\n", ret);
 934                 ath10k_hif_power_down(ar);
 935                 return ret;
 936         }
 937
 938         ret = ath10k_core_fetch_firmware_files(ar);
 939         if (ret) {
 940                 ath10k_err("could not fetch firmware files (%d)\n", ret);
 941                 ath10k_hif_power_down(ar);
 942                 return ret;
 943         }
 944
 945         mutex_lock(&ar->conf_mutex);
 946
 947         ret = ath10k_core_start(ar);
 948         if (ret) {
 949                 ath10k_err("could not init core (%d)\n", ret);
 950                 ath10k_core_free_firmware_files(ar);
 951                 ath10k_hif_power_down(ar);
 952                 mutex_unlock(&ar->conf_mutex);
 953                 return ret;
 954         }
 955
 956         ath10k_core_stop(ar);
 957
 958         mutex_unlock(&ar->conf_mutex);
 959
 960         ath10k_hif_power_down(ar);
 961         return 0;
 962 }
 963
 964 static int ath10k_core_check_chip_id(struct ath10k *ar)
 965 {
 966         u32 hw_revision = MS(ar->chip_id, SOC_CHIP_ID_REV);
 967
 968         ath10k_dbg(ATH10K_DBG_BOOT, "boot chip_id 0x%08x hw_revision 0x%x\n",
 969                    ar->chip_id, hw_revision);
 970
 971         /* Check that we are not using hw1.0 (some of them have same pci id
 972          * as hw2.0) before doing anything else as ath10k crashes horribly
 973          * due to missing hw1.0 workarounds. */
 974         switch (hw_revision) {
 975         case QCA988X_HW_1_0_CHIP_ID_REV:
 976                 ath10k_err("ERROR: qca988x hw1.0 is not supported\n");
 977                 return -EOPNOTSUPP;
 978
 979         case QCA988X_HW_2_0_CHIP_ID_REV:
 980                 /* known hardware revision, continue normally */
 981                 return 0;
 982
 983         default:
 984                 ath10k_warn("Warning: hardware revision unknown (0x%x), expect problems\n",
 985                             ar->chip_id);
 986                 return 0;
 987         }
 988
 989         return 0;
 990 }
 991
 992 int ath10k_core_register(struct ath10k *ar, u32 chip_id)
 993 {
 994         int status;
 995
 996         ar->chip_id = chip_id;
 997
 998         status = ath10k_core_check_chip_id(ar);
 999         if (status) {
1000                 ath10k_err("Unsupported chip id 0x%08x\n", ar->chip_id);
1001                 return status;
1002         }
1003
1004         status = ath10k_core_probe_fw(ar);
1005         if (status) {
1006                 ath10k_err("could not probe fw (%d)\n", status);
1007                 return status;
1008         }
1009
1010         status = ath10k_mac_register(ar);
1011         if (status) {
1012                 ath10k_err("could not register to mac80211 (%d)\n", status);
1013                 goto err_release_fw;
1014         }
1015
1016         status = ath10k_debug_create(ar);
1017         if (status) {
1018                 ath10k_err("unable to initialize debugfs\n");
1019                 goto err_unregister_mac;
1020         }
1021
1022         return 0;
1023
1024 err_unregister_mac:
1025         ath10k_mac_unregister(ar);
1026 err_release_fw:
1027         ath10k_core_free_firmware_files(ar);
1028         return status;
1029 }
1030 EXPORT_SYMBOL(ath10k_core_register);
1031
1032 void ath10k_core_unregister(struct ath10k *ar)
1033 {
1034         /* We must unregister from mac80211 before we stop HTC and HIF.
1035          * Otherwise we will fail to submit commands to FW and mac80211 will be
1036          * unhappy about callback failures. */
1037         ath10k_mac_unregister(ar);
1038
1039         ath10k_core_free_firmware_files(ar);
1040
1041         ath10k_debug_destroy(ar);
1042 }
1043 EXPORT_SYMBOL(ath10k_core_unregister);
1044
1045 MODULE_AUTHOR("Qualcomm Atheros");
1046 MODULE_DESCRIPTION("Core module for QCA988X PCIe devices.");
1047 MODULE_LICENSE("Dual BSD/GPL");