drivers/net/wireless/intel/iwlwifi/iwl-drv.c

   1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
   2 /*
   3  * Copyright (C) 2005-2014, 2018-2021 Intel Corporation
   4  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
   5  * Copyright (C) 2016-2017 Intel Deutschland GmbH
   6  */
   7 #include <linux/completion.h>
   8 #include <linux/dma-mapping.h>
   9 #include <linux/firmware.h>
  10 #include <linux/module.h>
  11 #include <linux/vmalloc.h>
  12
  13 #include "iwl-drv.h"
  14 #include "iwl-csr.h"
  15 #include "iwl-debug.h"
  16 #include "iwl-trans.h"
  17 #include "iwl-op-mode.h"
  18 #include "iwl-agn-hw.h"
  19 #include "fw/img.h"
  20 #include "iwl-dbg-tlv.h"
  21 #include "iwl-config.h"
  22 #include "iwl-modparams.h"
  23 #include "fw/api/alive.h"
  24 #include "fw/api/mac.h"
  25
  26 /******************************************************************************
  27  *
  28  * module boiler plate
  29  *
  30  ******************************************************************************/
  31
  32 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi driver for Linux"
  33 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  34 MODULE_AUTHOR(DRV_AUTHOR);
  35 MODULE_LICENSE("GPL");
  36
  37 #ifdef CONFIG_IWLWIFI_DEBUGFS
  38 static struct dentry *iwl_dbgfs_root;
  39 #endif
  40
  41 /**
  42  * struct iwl_drv - drv common data
  43  * @list: list of drv structures using this opmode
  44  * @fw: the iwl_fw structure
  45  * @op_mode: the running op_mode
  46  * @trans: transport layer
  47  * @dev: for debug prints only
  48  * @fw_index: firmware revision to try loading
  49  * @firmware_name: composite filename of ucode file to load
  50  * @request_firmware_complete: the firmware has been obtained from user space
  51  * @dbgfs_drv: debugfs root directory entry
  52  * @dbgfs_trans: debugfs transport directory entry
  53  * @dbgfs_op_mode: debugfs op_mode directory entry
  54  */
  55 struct iwl_drv {
  56         struct list_head list;
  57         struct iwl_fw fw;
  58
  59         struct iwl_op_mode *op_mode;
  60         struct iwl_trans *trans;
  61         struct device *dev;
  62
  63         int fw_index;                   /* firmware we're trying to load */
  64         char firmware_name[64];         /* name of firmware file to load */
  65
  66         struct completion request_firmware_complete;
  67
  68 #ifdef CONFIG_IWLWIFI_DEBUGFS
  69         struct dentry *dbgfs_drv;
  70         struct dentry *dbgfs_trans;
  71         struct dentry *dbgfs_op_mode;
  72 #endif
  73 };
  74
  75 enum {
  76         DVM_OP_MODE,
  77         MVM_OP_MODE,
  78 };
  79
  80 /* Protects the table contents, i.e. the ops pointer & drv list */
  81 static DEFINE_MUTEX(iwlwifi_opmode_table_mtx);
  82 static struct iwlwifi_opmode_table {
  83         const char *name;                       /* name: iwldvm, iwlmvm, etc */
  84         const struct iwl_op_mode_ops *ops;      /* pointer to op_mode ops */
  85         struct list_head drv;           /* list of devices using this op_mode */
  86 } iwlwifi_opmode_table[] = {            /* ops set when driver is initialized */
  87         [DVM_OP_MODE] = { .name = "iwldvm", .ops = NULL },
  88         [MVM_OP_MODE] = { .name = "iwlmvm", .ops = NULL },
  89 };
  90
  91 #define IWL_DEFAULT_SCAN_CHANNELS 40
  92
  93 /*
  94  * struct fw_sec: Just for the image parsing process.
  95  * For the fw storage we are using struct fw_desc.
  96  */
  97 struct fw_sec {
  98         const void *data;               /* the sec data */
  99         size_t size;                    /* section size */
 100         u32 offset;                     /* offset of writing in the device */
 101 };
 102
 103 static void iwl_free_fw_desc(struct iwl_drv *drv, struct fw_desc *desc)
 104 {
 105         vfree(desc->data);
 106         desc->data = NULL;
 107         desc->len = 0;
 108 }
 109
 110 static void iwl_free_fw_img(struct iwl_drv *drv, struct fw_img *img)
 111 {
 112         int i;
 113         for (i = 0; i < img->num_sec; i++)
 114                 iwl_free_fw_desc(drv, &img->sec[i]);
 115         kfree(img->sec);
 116 }
 117
 118 static void iwl_dealloc_ucode(struct iwl_drv *drv)
 119 {
 120         int i;
 121
 122         kfree(drv->fw.dbg.dest_tlv);
 123         for (i = 0; i < ARRAY_SIZE(drv->fw.dbg.conf_tlv); i++)
 124                 kfree(drv->fw.dbg.conf_tlv[i]);
 125         for (i = 0; i < ARRAY_SIZE(drv->fw.dbg.trigger_tlv); i++)
 126                 kfree(drv->fw.dbg.trigger_tlv[i]);
 127         kfree(drv->fw.dbg.mem_tlv);
 128         kfree(drv->fw.iml);
 129         kfree(drv->fw.ucode_capa.cmd_versions);
 130         kfree(drv->fw.phy_integration_ver);
 131
 132         for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
 133                 iwl_free_fw_img(drv, drv->fw.img + i);
 134 }
 135
 136 static int iwl_alloc_fw_desc(struct iwl_drv *drv, struct fw_desc *desc,
 137                              struct fw_sec *sec)
 138 {
 139         void *data;
 140
 141         desc->data = NULL;
 142
 143         if (!sec || !sec->size)
 144                 return -EINVAL;
 145
 146         data = vmalloc(sec->size);
 147         if (!data)
 148                 return -ENOMEM;
 149
 150         desc->len = sec->size;
 151         desc->offset = sec->offset;
 152         memcpy(data, sec->data, desc->len);
 153         desc->data = data;
 154
 155         return 0;
 156 }
 157
 158 static void iwl_req_fw_callback(const struct firmware *ucode_raw,
 159                                 void *context);
 160
 161 static int iwl_request_firmware(struct iwl_drv *drv, bool first)
 162 {
 163         const struct iwl_cfg *cfg = drv->trans->cfg;
 164         char tag[8];
 165
 166         if (drv->trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_9000 &&
 167             (CSR_HW_REV_STEP(drv->trans->hw_rev) != SILICON_B_STEP &&
 168              CSR_HW_REV_STEP(drv->trans->hw_rev) != SILICON_C_STEP)) {
 169                 IWL_ERR(drv,
 170                         "Only HW steps B and C are currently supported (0x%0x)\n",
 171                         drv->trans->hw_rev);
 172                 return -EINVAL;
 173         }
 174
 175         if (first) {
 176                 drv->fw_index = cfg->ucode_api_max;
 177                 sprintf(tag, "%d", drv->fw_index);
 178         } else {
 179                 drv->fw_index--;
 180                 sprintf(tag, "%d", drv->fw_index);
 181         }
 182
 183         if (drv->fw_index < cfg->ucode_api_min) {
 184                 IWL_ERR(drv, "no suitable firmware found!\n");
 185
 186                 if (cfg->ucode_api_min == cfg->ucode_api_max) {
 187                         IWL_ERR(drv, "%s%d is required\n", cfg->fw_name_pre,
 188                                 cfg->ucode_api_max);
 189                 } else {
 190                         IWL_ERR(drv, "minimum version required: %s%d\n",
 191                                 cfg->fw_name_pre, cfg->ucode_api_min);
 192                         IWL_ERR(drv, "maximum version supported: %s%d\n",
 193                                 cfg->fw_name_pre, cfg->ucode_api_max);
 194                 }
 195
 196                 IWL_ERR(drv,
 197                         "check git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git\n");
 198                 return -ENOENT;
 199         }
 200
 201         snprintf(drv->firmware_name, sizeof(drv->firmware_name), "%s%s.ucode",
 202                  cfg->fw_name_pre, tag);
 203
 204         IWL_DEBUG_FW_INFO(drv, "attempting to load firmware '%s'\n",
 205                           drv->firmware_name);
 206
 207         return request_firmware_nowait(THIS_MODULE, 1, drv->firmware_name,
 208                                        drv->trans->dev,
 209                                        GFP_KERNEL, drv, iwl_req_fw_callback);
 210 }
 211
 212 struct fw_img_parsing {
 213         struct fw_sec *sec;
 214         int sec_counter;
 215 };
 216
 217 /*
 218  * struct fw_sec_parsing: to extract fw section and it's offset from tlv
 219  */
 220 struct fw_sec_parsing {
 221         __le32 offset;
 222         const u8 data[];
 223 } __packed;
 224
 225 /**
 226  * struct iwl_tlv_calib_data - parse the default calib data from TLV
 227  *
 228  * @ucode_type: the uCode to which the following default calib relates.
 229  * @calib: default calibrations.
 230  */
 231 struct iwl_tlv_calib_data {
 232         __le32 ucode_type;
 233         struct iwl_tlv_calib_ctrl calib;
 234 } __packed;
 235
 236 struct iwl_firmware_pieces {
 237         struct fw_img_parsing img[IWL_UCODE_TYPE_MAX];
 238
 239         u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
 240         u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
 241
 242         /* FW debug data parsed for driver usage */
 243         bool dbg_dest_tlv_init;
 244         u8 *dbg_dest_ver;
 245         union {
 246                 struct iwl_fw_dbg_dest_tlv *dbg_dest_tlv;
 247                 struct iwl_fw_dbg_dest_tlv_v1 *dbg_dest_tlv_v1;
 248         };
 249         struct iwl_fw_dbg_conf_tlv *dbg_conf_tlv[FW_DBG_CONF_MAX];
 250         size_t dbg_conf_tlv_len[FW_DBG_CONF_MAX];
 251         struct iwl_fw_dbg_trigger_tlv *dbg_trigger_tlv[FW_DBG_TRIGGER_MAX];
 252         size_t dbg_trigger_tlv_len[FW_DBG_TRIGGER_MAX];
 253         struct iwl_fw_dbg_mem_seg_tlv *dbg_mem_tlv;
 254         size_t n_mem_tlv;
 255 };
 256
 257 /*
 258  * These functions are just to extract uCode section data from the pieces
 259  * structure.
 260  */
 261 static struct fw_sec *get_sec(struct iwl_firmware_pieces *pieces,
 262                               enum iwl_ucode_type type,
 263                               int  sec)
 264 {
 265         return &pieces->img[type].sec[sec];
 266 }
 267
 268 static void alloc_sec_data(struct iwl_firmware_pieces *pieces,
 269                            enum iwl_ucode_type type,
 270                            int sec)
 271 {
 272         struct fw_img_parsing *img = &pieces->img[type];
 273         struct fw_sec *sec_memory;
 274         int size = sec + 1;
 275         size_t alloc_size = sizeof(*img->sec) * size;
 276
 277         if (img->sec && img->sec_counter >= size)
 278                 return;
 279
 280         sec_memory = krealloc(img->sec, alloc_size, GFP_KERNEL);
 281         if (!sec_memory)
 282                 return;
 283
 284         img->sec = sec_memory;
 285         img->sec_counter = size;
 286 }
 287
 288 static void set_sec_data(struct iwl_firmware_pieces *pieces,
 289                          enum iwl_ucode_type type,
 290                          int sec,
 291                          const void *data)
 292 {
 293         alloc_sec_data(pieces, type, sec);
 294
 295         pieces->img[type].sec[sec].data = data;
 296 }
 297
 298 static void set_sec_size(struct iwl_firmware_pieces *pieces,
 299                          enum iwl_ucode_type type,
 300                          int sec,
 301                          size_t size)
 302 {
 303         alloc_sec_data(pieces, type, sec);
 304
 305         pieces->img[type].sec[sec].size = size;
 306 }
 307
 308 static size_t get_sec_size(struct iwl_firmware_pieces *pieces,
 309                            enum iwl_ucode_type type,
 310                            int sec)
 311 {
 312         return pieces->img[type].sec[sec].size;
 313 }
 314
 315 static void set_sec_offset(struct iwl_firmware_pieces *pieces,
 316                            enum iwl_ucode_type type,
 317                            int sec,
 318                            u32 offset)
 319 {
 320         alloc_sec_data(pieces, type, sec);
 321
 322         pieces->img[type].sec[sec].offset = offset;
 323 }
 324
 325 static int iwl_store_cscheme(struct iwl_fw *fw, const u8 *data, const u32 len)
 326 {
 327         int i, j;
 328         struct iwl_fw_cscheme_list *l = (struct iwl_fw_cscheme_list *)data;
 329         struct iwl_fw_cipher_scheme *fwcs;
 330
 331         if (len < sizeof(*l) ||
 332             len < sizeof(l->size) + l->size * sizeof(l->cs[0]))
 333                 return -EINVAL;
 334
 335         for (i = 0, j = 0; i < IWL_UCODE_MAX_CS && i < l->size; i++) {
 336                 fwcs = &l->cs[j];
 337
 338                 /* we skip schemes with zero cipher suite selector */
 339                 if (!fwcs->cipher)
 340                         continue;
 341
 342                 fw->cs[j++] = *fwcs;
 343         }
 344
 345         return 0;
 346 }
 347
 348 /*
 349  * Gets uCode section from tlv.
 350  */
 351 static int iwl_store_ucode_sec(struct iwl_firmware_pieces *pieces,
 352                                const void *data, enum iwl_ucode_type type,
 353                                int size)
 354 {
 355         struct fw_img_parsing *img;
 356         struct fw_sec *sec;
 357         struct fw_sec_parsing *sec_parse;
 358         size_t alloc_size;
 359
 360         if (WARN_ON(!pieces || !data || type >= IWL_UCODE_TYPE_MAX))
 361                 return -1;
 362
 363         sec_parse = (struct fw_sec_parsing *)data;
 364
 365         img = &pieces->img[type];
 366
 367         alloc_size = sizeof(*img->sec) * (img->sec_counter + 1);
 368         sec = krealloc(img->sec, alloc_size, GFP_KERNEL);
 369         if (!sec)
 370                 return -ENOMEM;
 371         img->sec = sec;
 372
 373         sec = &img->sec[img->sec_counter];
 374
 375         sec->offset = le32_to_cpu(sec_parse->offset);
 376         sec->data = sec_parse->data;
 377         sec->size = size - sizeof(sec_parse->offset);
 378
 379         ++img->sec_counter;
 380
 381         return 0;
 382 }
 383
 384 static int iwl_set_default_calib(struct iwl_drv *drv, const u8 *data)
 385 {
 386         struct iwl_tlv_calib_data *def_calib =
 387                                         (struct iwl_tlv_calib_data *)data;
 388         u32 ucode_type = le32_to_cpu(def_calib->ucode_type);
 389         if (ucode_type >= IWL_UCODE_TYPE_MAX) {
 390                 IWL_ERR(drv, "Wrong ucode_type %u for default calibration.\n",
 391                         ucode_type);
 392                 return -EINVAL;
 393         }
 394         drv->fw.default_calib[ucode_type].flow_trigger =
 395                 def_calib->calib.flow_trigger;
 396         drv->fw.default_calib[ucode_type].event_trigger =
 397                 def_calib->calib.event_trigger;
 398
 399         return 0;
 400 }
 401
 402 static void iwl_set_ucode_api_flags(struct iwl_drv *drv, const u8 *data,
 403                                     struct iwl_ucode_capabilities *capa)
 404 {
 405         const struct iwl_ucode_api *ucode_api = (void *)data;
 406         u32 api_index = le32_to_cpu(ucode_api->api_index);
 407         u32 api_flags = le32_to_cpu(ucode_api->api_flags);
 408         int i;
 409
 410         if (api_index >= DIV_ROUND_UP(NUM_IWL_UCODE_TLV_API, 32)) {
 411                 IWL_WARN(drv,
 412                          "api flags index %d larger than supported by driver\n",
 413                          api_index);
 414                 return;
 415         }
 416
 417         for (i = 0; i < 32; i++) {
 418                 if (api_flags & BIT(i))
 419                         __set_bit(i + 32 * api_index, capa->_api);
 420         }
 421 }
 422
 423 static void iwl_set_ucode_capabilities(struct iwl_drv *drv, const u8 *data,
 424                                        struct iwl_ucode_capabilities *capa)
 425 {
 426         const struct iwl_ucode_capa *ucode_capa = (void *)data;
 427         u32 api_index = le32_to_cpu(ucode_capa->api_index);
 428         u32 api_flags = le32_to_cpu(ucode_capa->api_capa);
 429         int i;
 430
 431         if (api_index >= DIV_ROUND_UP(NUM_IWL_UCODE_TLV_CAPA, 32)) {
 432                 IWL_WARN(drv,
 433                          "capa flags index %d larger than supported by driver\n",
 434                          api_index);
 435                 return;
 436         }
 437
 438         for (i = 0; i < 32; i++) {
 439                 if (api_flags & BIT(i))
 440                         __set_bit(i + 32 * api_index, capa->_capa);
 441         }
 442 }
 443
 444 static const char *iwl_reduced_fw_name(struct iwl_drv *drv)
 445 {
 446         const char *name = drv->firmware_name;
 447
 448         if (strncmp(name, "iwlwifi-", 8) == 0)
 449                 name += 8;
 450
 451         return name;
 452 }
 453
 454 static int iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
 455                                     const struct firmware *ucode_raw,
 456                                     struct iwl_firmware_pieces *pieces)
 457 {
 458         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
 459         u32 api_ver, hdr_size, build;
 460         char buildstr[25];
 461         const u8 *src;
 462
 463         drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
 464         api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
 465
 466         switch (api_ver) {
 467         default:
 468                 hdr_size = 28;
 469                 if (ucode_raw->size < hdr_size) {
 470                         IWL_ERR(drv, "File size too small!\n");
 471                         return -EINVAL;
 472                 }
 473                 build = le32_to_cpu(ucode->u.v2.build);
 474                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 475                              le32_to_cpu(ucode->u.v2.inst_size));
 476                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 477                              le32_to_cpu(ucode->u.v2.data_size));
 478                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 479                              le32_to_cpu(ucode->u.v2.init_size));
 480                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 481                              le32_to_cpu(ucode->u.v2.init_data_size));
 482                 src = ucode->u.v2.data;
 483                 break;
 484         case 0:
 485         case 1:
 486         case 2:
 487                 hdr_size = 24;
 488                 if (ucode_raw->size < hdr_size) {
 489                         IWL_ERR(drv, "File size too small!\n");
 490                         return -EINVAL;
 491                 }
 492                 build = 0;
 493                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 494                              le32_to_cpu(ucode->u.v1.inst_size));
 495                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 496                              le32_to_cpu(ucode->u.v1.data_size));
 497                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 498                              le32_to_cpu(ucode->u.v1.init_size));
 499                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 500                              le32_to_cpu(ucode->u.v1.init_data_size));
 501                 src = ucode->u.v1.data;
 502                 break;
 503         }
 504
 505         if (build)
 506                 sprintf(buildstr, " build %u", build);
 507         else
 508                 buildstr[0] = '\0';
 509
 510         snprintf(drv->fw.fw_version,
 511                  sizeof(drv->fw.fw_version),
 512                  "%u.%u.%u.%u%s %s",
 513                  IWL_UCODE_MAJOR(drv->fw.ucode_ver),
 514                  IWL_UCODE_MINOR(drv->fw.ucode_ver),
 515                  IWL_UCODE_API(drv->fw.ucode_ver),
 516                  IWL_UCODE_SERIAL(drv->fw.ucode_ver),
 517                  buildstr, iwl_reduced_fw_name(drv));
 518
 519         /* Verify size of file vs. image size info in file's header */
 520
 521         if (ucode_raw->size != hdr_size +
 522             get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) +
 523             get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) +
 524             get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) +
 525             get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)) {
 526
 527                 IWL_ERR(drv,
 528                         "uCode file size %d does not match expected size\n",
 529                         (int)ucode_raw->size);
 530                 return -EINVAL;
 531         }
 532
 533
 534         set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, src);
 535         src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST);
 536         set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 537                        IWLAGN_RTC_INST_LOWER_BOUND);
 538         set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, src);
 539         src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA);
 540         set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 541                        IWLAGN_RTC_DATA_LOWER_BOUND);
 542         set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, src);
 543         src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST);
 544         set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 545                        IWLAGN_RTC_INST_LOWER_BOUND);
 546         set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, src);
 547         src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA);
 548         set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 549                        IWLAGN_RTC_DATA_LOWER_BOUND);
 550         return 0;
 551 }
 552
 553 static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
 554                                 const struct firmware *ucode_raw,
 555                                 struct iwl_firmware_pieces *pieces,
 556                                 struct iwl_ucode_capabilities *capa,
 557                                 bool *usniffer_images)
 558 {
 559         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
 560         const struct iwl_ucode_tlv *tlv;
 561         size_t len = ucode_raw->size;
 562         const u8 *data;
 563         u32 tlv_len;
 564         u32 usniffer_img;
 565         enum iwl_ucode_tlv_type tlv_type;
 566         const u8 *tlv_data;
 567         char buildstr[25];
 568         u32 build, paging_mem_size;
 569         int num_of_cpus;
 570         bool usniffer_req = false;
 571
 572         if (len < sizeof(*ucode)) {
 573                 IWL_ERR(drv, "uCode has invalid length: %zd\n", len);
 574                 return -EINVAL;
 575         }
 576
 577         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
 578                 IWL_ERR(drv, "invalid uCode magic: 0X%x\n",
 579                         le32_to_cpu(ucode->magic));
 580                 return -EINVAL;
 581         }
 582
 583         drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
 584         memcpy(drv->fw.human_readable, ucode->human_readable,
 585                sizeof(drv->fw.human_readable));
 586         build = le32_to_cpu(ucode->build);
 587
 588         if (build)
 589                 sprintf(buildstr, " build %u", build);
 590         else
 591                 buildstr[0] = '\0';
 592
 593         snprintf(drv->fw.fw_version,
 594                  sizeof(drv->fw.fw_version),
 595                  "%u.%u.%u.%u%s %s",
 596                  IWL_UCODE_MAJOR(drv->fw.ucode_ver),
 597                  IWL_UCODE_MINOR(drv->fw.ucode_ver),
 598                  IWL_UCODE_API(drv->fw.ucode_ver),
 599                  IWL_UCODE_SERIAL(drv->fw.ucode_ver),
 600                  buildstr, iwl_reduced_fw_name(drv));
 601
 602         data = ucode->data;
 603
 604         len -= sizeof(*ucode);
 605
 606         while (len >= sizeof(*tlv)) {
 607                 len -= sizeof(*tlv);
 608                 tlv = (void *)data;
 609
 610                 tlv_len = le32_to_cpu(tlv->length);
 611                 tlv_type = le32_to_cpu(tlv->type);
 612                 tlv_data = tlv->data;
 613
 614                 if (len < tlv_len) {
 615                         IWL_ERR(drv, "invalid TLV len: %zd/%u\n",
 616                                 len, tlv_len);
 617                         return -EINVAL;
 618                 }
 619                 len -= ALIGN(tlv_len, 4);
 620                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
 621
 622                 switch (tlv_type) {
 623                 case IWL_UCODE_TLV_INST:
 624                         set_sec_data(pieces, IWL_UCODE_REGULAR,
 625                                      IWL_UCODE_SECTION_INST, tlv_data);
 626                         set_sec_size(pieces, IWL_UCODE_REGULAR,
 627                                      IWL_UCODE_SECTION_INST, tlv_len);
 628                         set_sec_offset(pieces, IWL_UCODE_REGULAR,
 629                                        IWL_UCODE_SECTION_INST,
 630                                        IWLAGN_RTC_INST_LOWER_BOUND);
 631                         break;
 632                 case IWL_UCODE_TLV_DATA:
 633                         set_sec_data(pieces, IWL_UCODE_REGULAR,
 634                                      IWL_UCODE_SECTION_DATA, tlv_data);
 635                         set_sec_size(pieces, IWL_UCODE_REGULAR,
 636                                      IWL_UCODE_SECTION_DATA, tlv_len);
 637                         set_sec_offset(pieces, IWL_UCODE_REGULAR,
 638                                        IWL_UCODE_SECTION_DATA,
 639                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 640                         break;
 641                 case IWL_UCODE_TLV_INIT:
 642                         set_sec_data(pieces, IWL_UCODE_INIT,
 643                                      IWL_UCODE_SECTION_INST, tlv_data);
 644                         set_sec_size(pieces, IWL_UCODE_INIT,
 645                                      IWL_UCODE_SECTION_INST, tlv_len);
 646                         set_sec_offset(pieces, IWL_UCODE_INIT,
 647                                        IWL_UCODE_SECTION_INST,
 648                                        IWLAGN_RTC_INST_LOWER_BOUND);
 649                         break;
 650                 case IWL_UCODE_TLV_INIT_DATA:
 651                         set_sec_data(pieces, IWL_UCODE_INIT,
 652                                      IWL_UCODE_SECTION_DATA, tlv_data);
 653                         set_sec_size(pieces, IWL_UCODE_INIT,
 654                                      IWL_UCODE_SECTION_DATA, tlv_len);
 655                         set_sec_offset(pieces, IWL_UCODE_INIT,
 656                                        IWL_UCODE_SECTION_DATA,
 657                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 658                         break;
 659                 case IWL_UCODE_TLV_BOOT:
 660                         IWL_ERR(drv, "Found unexpected BOOT ucode\n");
 661                         break;
 662                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
 663                         if (tlv_len != sizeof(u32))
 664                                 goto invalid_tlv_len;
 665                         capa->max_probe_length =
 666                                         le32_to_cpup((__le32 *)tlv_data);
 667                         break;
 668                 case IWL_UCODE_TLV_PAN:
 669                         if (tlv_len)
 670                                 goto invalid_tlv_len;
 671                         capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
 672                         break;
 673                 case IWL_UCODE_TLV_FLAGS:
 674                         /* must be at least one u32 */
 675                         if (tlv_len < sizeof(u32))
 676                                 goto invalid_tlv_len;
 677                         /* and a proper number of u32s */
 678                         if (tlv_len % sizeof(u32))
 679                                 goto invalid_tlv_len;
 680                         /*
 681                          * This driver only reads the first u32 as
 682                          * right now no more features are defined,
 683                          * if that changes then either the driver
 684                          * will not work with the new firmware, or
 685                          * it'll not take advantage of new features.
 686                          */
 687                         capa->flags = le32_to_cpup((__le32 *)tlv_data);
 688                         break;
 689                 case IWL_UCODE_TLV_API_CHANGES_SET:
 690                         if (tlv_len != sizeof(struct iwl_ucode_api))
 691                                 goto invalid_tlv_len;
 692                         iwl_set_ucode_api_flags(drv, tlv_data, capa);
 693                         break;
 694                 case IWL_UCODE_TLV_ENABLED_CAPABILITIES:
 695                         if (tlv_len != sizeof(struct iwl_ucode_capa))
 696                                 goto invalid_tlv_len;
 697                         iwl_set_ucode_capabilities(drv, tlv_data, capa);
 698                         break;
 699                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
 700                         if (tlv_len != sizeof(u32))
 701                                 goto invalid_tlv_len;
 702                         pieces->init_evtlog_ptr =
 703                                         le32_to_cpup((__le32 *)tlv_data);
 704                         break;
 705                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
 706                         if (tlv_len != sizeof(u32))
 707                                 goto invalid_tlv_len;
 708                         pieces->init_evtlog_size =
 709                                         le32_to_cpup((__le32 *)tlv_data);
 710                         break;
 711                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
 712                         if (tlv_len != sizeof(u32))
 713                                 goto invalid_tlv_len;
 714                         pieces->init_errlog_ptr =
 715                                         le32_to_cpup((__le32 *)tlv_data);
 716                         break;
 717                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
 718                         if (tlv_len != sizeof(u32))
 719                                 goto invalid_tlv_len;
 720                         pieces->inst_evtlog_ptr =
 721                                         le32_to_cpup((__le32 *)tlv_data);
 722                         break;
 723                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
 724                         if (tlv_len != sizeof(u32))
 725                                 goto invalid_tlv_len;
 726                         pieces->inst_evtlog_size =
 727                                         le32_to_cpup((__le32 *)tlv_data);
 728                         break;
 729                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
 730                         if (tlv_len != sizeof(u32))
 731                                 goto invalid_tlv_len;
 732                         pieces->inst_errlog_ptr =
 733                                         le32_to_cpup((__le32 *)tlv_data);
 734                         break;
 735                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
 736                         if (tlv_len)
 737                                 goto invalid_tlv_len;
 738                         drv->fw.enhance_sensitivity_table = true;
 739                         break;
 740                 case IWL_UCODE_TLV_WOWLAN_INST:
 741                         set_sec_data(pieces, IWL_UCODE_WOWLAN,
 742                                      IWL_UCODE_SECTION_INST, tlv_data);
 743                         set_sec_size(pieces, IWL_UCODE_WOWLAN,
 744                                      IWL_UCODE_SECTION_INST, tlv_len);
 745                         set_sec_offset(pieces, IWL_UCODE_WOWLAN,
 746                                        IWL_UCODE_SECTION_INST,
 747                                        IWLAGN_RTC_INST_LOWER_BOUND);
 748                         break;
 749                 case IWL_UCODE_TLV_WOWLAN_DATA:
 750                         set_sec_data(pieces, IWL_UCODE_WOWLAN,
 751                                      IWL_UCODE_SECTION_DATA, tlv_data);
 752                         set_sec_size(pieces, IWL_UCODE_WOWLAN,
 753                                      IWL_UCODE_SECTION_DATA, tlv_len);
 754                         set_sec_offset(pieces, IWL_UCODE_WOWLAN,
 755                                        IWL_UCODE_SECTION_DATA,
 756                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 757                         break;
 758                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
 759                         if (tlv_len != sizeof(u32))
 760                                 goto invalid_tlv_len;
 761                         capa->standard_phy_calibration_size =
 762                                         le32_to_cpup((__le32 *)tlv_data);
 763                         break;
 764                 case IWL_UCODE_TLV_SEC_RT:
 765                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
 766                                             tlv_len);
 767                         drv->fw.type = IWL_FW_MVM;
 768                         break;
 769                 case IWL_UCODE_TLV_SEC_INIT:
 770                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
 771                                             tlv_len);
 772                         drv->fw.type = IWL_FW_MVM;
 773                         break;
 774                 case IWL_UCODE_TLV_SEC_WOWLAN:
 775                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
 776                                             tlv_len);
 777                         drv->fw.type = IWL_FW_MVM;
 778                         break;
 779                 case IWL_UCODE_TLV_DEF_CALIB:
 780                         if (tlv_len != sizeof(struct iwl_tlv_calib_data))
 781                                 goto invalid_tlv_len;
 782                         if (iwl_set_default_calib(drv, tlv_data))
 783                                 goto tlv_error;
 784                         break;
 785                 case IWL_UCODE_TLV_PHY_SKU:
 786                         if (tlv_len != sizeof(u32))
 787                                 goto invalid_tlv_len;
 788                         drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data);
 789                         drv->fw.valid_tx_ant = (drv->fw.phy_config &
 790                                                 FW_PHY_CFG_TX_CHAIN) >>
 791                                                 FW_PHY_CFG_TX_CHAIN_POS;
 792                         drv->fw.valid_rx_ant = (drv->fw.phy_config &
 793                                                 FW_PHY_CFG_RX_CHAIN) >>
 794                                                 FW_PHY_CFG_RX_CHAIN_POS;
 795                         break;
 796                 case IWL_UCODE_TLV_SECURE_SEC_RT:
 797                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
 798                                             tlv_len);
 799                         drv->fw.type = IWL_FW_MVM;
 800                         break;
 801                 case IWL_UCODE_TLV_SECURE_SEC_INIT:
 802                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
 803                                             tlv_len);
 804                         drv->fw.type = IWL_FW_MVM;
 805                         break;
 806                 case IWL_UCODE_TLV_SECURE_SEC_WOWLAN:
 807                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
 808                                             tlv_len);
 809                         drv->fw.type = IWL_FW_MVM;
 810                         break;
 811                 case IWL_UCODE_TLV_NUM_OF_CPU:
 812                         if (tlv_len != sizeof(u32))
 813                                 goto invalid_tlv_len;
 814                         num_of_cpus =
 815                                 le32_to_cpup((__le32 *)tlv_data);
 816
 817                         if (num_of_cpus == 2) {
 818                                 drv->fw.img[IWL_UCODE_REGULAR].is_dual_cpus =
 819                                         true;
 820                                 drv->fw.img[IWL_UCODE_INIT].is_dual_cpus =
 821                                         true;
 822                                 drv->fw.img[IWL_UCODE_WOWLAN].is_dual_cpus =
 823                                         true;
 824                         } else if ((num_of_cpus > 2) || (num_of_cpus < 1)) {
 825                                 IWL_ERR(drv, "Driver support upto 2 CPUs\n");
 826                                 return -EINVAL;
 827                         }
 828                         break;
 829                 case IWL_UCODE_TLV_CSCHEME:
 830                         if (iwl_store_cscheme(&drv->fw, tlv_data, tlv_len))
 831                                 goto invalid_tlv_len;
 832                         break;
 833                 case IWL_UCODE_TLV_N_SCAN_CHANNELS:
 834                         if (tlv_len != sizeof(u32))
 835                                 goto invalid_tlv_len;
 836                         capa->n_scan_channels =
 837                                 le32_to_cpup((__le32 *)tlv_data);
 838                         break;
 839                 case IWL_UCODE_TLV_FW_VERSION: {
 840                         __le32 *ptr = (void *)tlv_data;
 841                         u32 major, minor;
 842                         u8 local_comp;
 843
 844                         if (tlv_len != sizeof(u32) * 3)
 845                                 goto invalid_tlv_len;
 846
 847                         major = le32_to_cpup(ptr++);
 848                         minor = le32_to_cpup(ptr++);
 849                         local_comp = le32_to_cpup(ptr);
 850
 851                         if (major >= 35)
 852                                 snprintf(drv->fw.fw_version,
 853                                          sizeof(drv->fw.fw_version),
 854                                         "%u.%08x.%u %s", major, minor,
 855                                         local_comp, iwl_reduced_fw_name(drv));
 856                         else
 857                                 snprintf(drv->fw.fw_version,
 858                                          sizeof(drv->fw.fw_version),
 859                                         "%u.%u.%u %s", major, minor,
 860                                         local_comp, iwl_reduced_fw_name(drv));
 861                         break;
 862                         }
 863                 case IWL_UCODE_TLV_FW_DBG_DEST: {
 864                         struct iwl_fw_dbg_dest_tlv *dest = NULL;
 865                         struct iwl_fw_dbg_dest_tlv_v1 *dest_v1 = NULL;
 866                         u8 mon_mode;
 867
 868                         pieces->dbg_dest_ver = (u8 *)tlv_data;
 869                         if (*pieces->dbg_dest_ver == 1) {
 870                                 dest = (void *)tlv_data;
 871                         } else if (*pieces->dbg_dest_ver == 0) {
 872                                 dest_v1 = (void *)tlv_data;
 873                         } else {
 874                                 IWL_ERR(drv,
 875                                         "The version is %d, and it is invalid\n",
 876                                         *pieces->dbg_dest_ver);
 877                                 break;
 878                         }
 879
 880                         if (pieces->dbg_dest_tlv_init) {
 881                                 IWL_ERR(drv,
 882                                         "dbg destination ignored, already exists\n");
 883                                 break;
 884                         }
 885
 886                         pieces->dbg_dest_tlv_init = true;
 887
 888                         if (dest_v1) {
 889                                 pieces->dbg_dest_tlv_v1 = dest_v1;
 890                                 mon_mode = dest_v1->monitor_mode;
 891                         } else {
 892                                 pieces->dbg_dest_tlv = dest;
 893                                 mon_mode = dest->monitor_mode;
 894                         }
 895
 896                         IWL_INFO(drv, "Found debug destination: %s\n",
 897                                  get_fw_dbg_mode_string(mon_mode));
 898
 899                         drv->fw.dbg.n_dest_reg = (dest_v1) ?
 900                                 tlv_len -
 901                                 offsetof(struct iwl_fw_dbg_dest_tlv_v1,
 902                                          reg_ops) :
 903                                 tlv_len -
 904                                 offsetof(struct iwl_fw_dbg_dest_tlv,
 905                                          reg_ops);
 906
 907                         drv->fw.dbg.n_dest_reg /=
 908                                 sizeof(drv->fw.dbg.dest_tlv->reg_ops[0]);
 909
 910                         break;
 911                         }
 912                 case IWL_UCODE_TLV_FW_DBG_CONF: {
 913                         struct iwl_fw_dbg_conf_tlv *conf = (void *)tlv_data;
 914
 915                         if (!pieces->dbg_dest_tlv_init) {
 916                                 IWL_ERR(drv,
 917                                         "Ignore dbg config %d - no destination configured\n",
 918                                         conf->id);
 919                                 break;
 920                         }
 921
 922                         if (conf->id >= ARRAY_SIZE(drv->fw.dbg.conf_tlv)) {
 923                                 IWL_ERR(drv,
 924                                         "Skip unknown configuration: %d\n",
 925                                         conf->id);
 926                                 break;
 927                         }
 928
 929                         if (pieces->dbg_conf_tlv[conf->id]) {
 930                                 IWL_ERR(drv,
 931                                         "Ignore duplicate dbg config %d\n",
 932                                         conf->id);
 933                                 break;
 934                         }
 935
 936                         if (conf->usniffer)
 937                                 usniffer_req = true;
 938
 939                         IWL_INFO(drv, "Found debug configuration: %d\n",
 940                                  conf->id);
 941
 942                         pieces->dbg_conf_tlv[conf->id] = conf;
 943                         pieces->dbg_conf_tlv_len[conf->id] = tlv_len;
 944                         break;
 945                         }
 946                 case IWL_UCODE_TLV_FW_DBG_TRIGGER: {
 947                         struct iwl_fw_dbg_trigger_tlv *trigger =
 948                                 (void *)tlv_data;
 949                         u32 trigger_id = le32_to_cpu(trigger->id);
 950
 951                         if (trigger_id >= ARRAY_SIZE(drv->fw.dbg.trigger_tlv)) {
 952                                 IWL_ERR(drv,
 953                                         "Skip unknown trigger: %u\n",
 954                                         trigger->id);
 955                                 break;
 956                         }
 957
 958                         if (pieces->dbg_trigger_tlv[trigger_id]) {
 959                                 IWL_ERR(drv,
 960                                         "Ignore duplicate dbg trigger %u\n",
 961                                         trigger->id);
 962                                 break;
 963                         }
 964
 965                         IWL_INFO(drv, "Found debug trigger: %u\n", trigger->id);
 966
 967                         pieces->dbg_trigger_tlv[trigger_id] = trigger;
 968                         pieces->dbg_trigger_tlv_len[trigger_id] = tlv_len;
 969                         break;
 970                         }
 971                 case IWL_UCODE_TLV_FW_DBG_DUMP_LST: {
 972                         if (tlv_len != sizeof(u32)) {
 973                                 IWL_ERR(drv,
 974                                         "dbg lst mask size incorrect, skip\n");
 975                                 break;
 976                         }
 977
 978                         drv->fw.dbg.dump_mask =
 979                                 le32_to_cpup((__le32 *)tlv_data);
 980                         break;
 981                         }
 982                 case IWL_UCODE_TLV_SEC_RT_USNIFFER:
 983                         *usniffer_images = true;
 984                         iwl_store_ucode_sec(pieces, tlv_data,
 985                                             IWL_UCODE_REGULAR_USNIFFER,
 986                                             tlv_len);
 987                         break;
 988                 case IWL_UCODE_TLV_PAGING:
 989                         if (tlv_len != sizeof(u32))
 990                                 goto invalid_tlv_len;
 991                         paging_mem_size = le32_to_cpup((__le32 *)tlv_data);
 992
 993                         IWL_DEBUG_FW(drv,
 994                                      "Paging: paging enabled (size = %u bytes)\n",
 995                                      paging_mem_size);
 996
 997                         if (paging_mem_size > MAX_PAGING_IMAGE_SIZE) {
 998                                 IWL_ERR(drv,
 999                                         "Paging: driver supports up to %lu bytes for paging image\n",
1000                                         MAX_PAGING_IMAGE_SIZE);
1001                                 return -EINVAL;
1002                         }
1003
1004                         if (paging_mem_size & (FW_PAGING_SIZE - 1)) {
1005                                 IWL_ERR(drv,
1006                                         "Paging: image isn't multiple %lu\n",
1007                                         FW_PAGING_SIZE);
1008                                 return -EINVAL;
1009                         }
1010
1011                         drv->fw.img[IWL_UCODE_REGULAR].paging_mem_size =
1012                                 paging_mem_size;
1013                         usniffer_img = IWL_UCODE_REGULAR_USNIFFER;
1014                         drv->fw.img[usniffer_img].paging_mem_size =
1015                                 paging_mem_size;
1016                         break;
1017                 case IWL_UCODE_TLV_FW_GSCAN_CAPA:
1018                         /* ignored */
1019                         break;
1020                 case IWL_UCODE_TLV_FW_MEM_SEG: {
1021                         struct iwl_fw_dbg_mem_seg_tlv *dbg_mem =
1022                                 (void *)tlv_data;
1023                         size_t size;
1024                         struct iwl_fw_dbg_mem_seg_tlv *n;
1025
1026                         if (tlv_len != (sizeof(*dbg_mem)))
1027                                 goto invalid_tlv_len;
1028
1029                         IWL_DEBUG_INFO(drv, "Found debug memory segment: %u\n",
1030                                        dbg_mem->data_type);
1031
1032                         size = sizeof(*pieces->dbg_mem_tlv) *
1033                                (pieces->n_mem_tlv + 1);
1034                         n = krealloc(pieces->dbg_mem_tlv, size, GFP_KERNEL);
1035                         if (!n)
1036                                 return -ENOMEM;
1037                         pieces->dbg_mem_tlv = n;
1038                         pieces->dbg_mem_tlv[pieces->n_mem_tlv] = *dbg_mem;
1039                         pieces->n_mem_tlv++;
1040                         break;
1041                         }
1042                 case IWL_UCODE_TLV_IML: {
1043                         drv->fw.iml_len = tlv_len;
1044                         drv->fw.iml = kmemdup(tlv_data, tlv_len, GFP_KERNEL);
1045                         if (!drv->fw.iml)
1046                                 return -ENOMEM;
1047                         break;
1048                         }
1049                 case IWL_UCODE_TLV_FW_RECOVERY_INFO: {
1050                         struct {
1051                                 __le32 buf_addr;
1052                                 __le32 buf_size;
1053                         } *recov_info = (void *)tlv_data;
1054
1055                         if (tlv_len != sizeof(*recov_info))
1056                                 goto invalid_tlv_len;
1057                         capa->error_log_addr =
1058                                 le32_to_cpu(recov_info->buf_addr);
1059                         capa->error_log_size =
1060                                 le32_to_cpu(recov_info->buf_size);
1061                         }
1062                         break;
1063                 case IWL_UCODE_TLV_FW_FSEQ_VERSION: {
1064                         struct {
1065                                 u8 version[32];
1066                                 u8 sha1[20];
1067                         } *fseq_ver = (void *)tlv_data;
1068
1069                         if (tlv_len != sizeof(*fseq_ver))
1070                                 goto invalid_tlv_len;
1071                         IWL_INFO(drv, "TLV_FW_FSEQ_VERSION: %s\n",
1072                                  fseq_ver->version);
1073                         }
1074                         break;
1075                 case IWL_UCODE_TLV_FW_NUM_STATIONS:
1076                         if (tlv_len != sizeof(u32))
1077                                 goto invalid_tlv_len;
1078                         if (le32_to_cpup((__le32 *)tlv_data) >
1079                             IWL_MVM_STATION_COUNT_MAX) {
1080                                 IWL_ERR(drv,
1081                                         "%d is an invalid number of station\n",
1082                                         le32_to_cpup((__le32 *)tlv_data));
1083                                 goto tlv_error;
1084                         }
1085                         capa->num_stations =
1086                                 le32_to_cpup((__le32 *)tlv_data);
1087                         break;
1088                 case IWL_UCODE_TLV_UMAC_DEBUG_ADDRS: {
1089                         struct iwl_umac_debug_addrs *dbg_ptrs =
1090                                 (void *)tlv_data;
1091
1092                         if (tlv_len != sizeof(*dbg_ptrs))
1093                                 goto invalid_tlv_len;
1094                         if (drv->trans->trans_cfg->device_family <
1095                             IWL_DEVICE_FAMILY_22000)
1096                                 break;
1097                         drv->trans->dbg.umac_error_event_table =
1098                                 le32_to_cpu(dbg_ptrs->error_info_addr) &
1099                                 ~FW_ADDR_CACHE_CONTROL;
1100                         drv->trans->dbg.error_event_table_tlv_status |=
1101                                 IWL_ERROR_EVENT_TABLE_UMAC;
1102                         break;
1103                         }
1104                 case IWL_UCODE_TLV_LMAC_DEBUG_ADDRS: {
1105                         struct iwl_lmac_debug_addrs *dbg_ptrs =
1106                                 (void *)tlv_data;
1107
1108                         if (tlv_len != sizeof(*dbg_ptrs))
1109                                 goto invalid_tlv_len;
1110                         if (drv->trans->trans_cfg->device_family <
1111                             IWL_DEVICE_FAMILY_22000)
1112                                 break;
1113                         drv->trans->dbg.lmac_error_event_table[0] =
1114                                 le32_to_cpu(dbg_ptrs->error_event_table_ptr) &
1115                                 ~FW_ADDR_CACHE_CONTROL;
1116                         drv->trans->dbg.error_event_table_tlv_status |=
1117                                 IWL_ERROR_EVENT_TABLE_LMAC1;
1118                         break;
1119                         }
1120                 case IWL_UCODE_TLV_TCM_DEBUG_ADDRS: {
1121                         struct iwl_fw_tcm_error_addr *ptr = (void *)tlv_data;
1122
1123                         if (tlv_len != sizeof(*ptr))
1124                                 goto invalid_tlv_len;
1125                         drv->trans->dbg.tcm_error_event_table =
1126                                 le32_to_cpu(ptr->addr) & ~FW_ADDR_CACHE_CONTROL;
1127                         drv->trans->dbg.error_event_table_tlv_status |=
1128                                 IWL_ERROR_EVENT_TABLE_TCM;
1129                         break;
1130                         }
1131                 case IWL_UCODE_TLV_TYPE_DEBUG_INFO:
1132                 case IWL_UCODE_TLV_TYPE_BUFFER_ALLOCATION:
1133                 case IWL_UCODE_TLV_TYPE_HCMD:
1134                 case IWL_UCODE_TLV_TYPE_REGIONS:
1135                 case IWL_UCODE_TLV_TYPE_TRIGGERS:
1136                         if (iwlwifi_mod_params.enable_ini)
1137                                 iwl_dbg_tlv_alloc(drv->trans, tlv, false);
1138                         break;
1139                 case IWL_UCODE_TLV_CMD_VERSIONS:
1140                         if (tlv_len % sizeof(struct iwl_fw_cmd_version)) {
1141                                 IWL_ERR(drv,
1142                                         "Invalid length for command versions: %u\n",
1143                                         tlv_len);
1144                                 tlv_len /= sizeof(struct iwl_fw_cmd_version);
1145                                 tlv_len *= sizeof(struct iwl_fw_cmd_version);
1146                         }
1147                         if (WARN_ON(capa->cmd_versions))
1148                                 return -EINVAL;
1149                         capa->cmd_versions = kmemdup(tlv_data, tlv_len,
1150                                                      GFP_KERNEL);
1151                         if (!capa->cmd_versions)
1152                                 return -ENOMEM;
1153                         capa->n_cmd_versions =
1154                                 tlv_len / sizeof(struct iwl_fw_cmd_version);
1155                         break;
1156                 case IWL_UCODE_TLV_PHY_INTEGRATION_VERSION:
1157                         if (drv->fw.phy_integration_ver) {
1158                                 IWL_ERR(drv,
1159                                         "phy integration str ignored, already exists\n");
1160                                 break;
1161                         }
1162
1163                         drv->fw.phy_integration_ver =
1164                                 kmemdup(tlv_data, tlv_len, GFP_KERNEL);
1165                         if (!drv->fw.phy_integration_ver)
1166                                 return -ENOMEM;
1167                         drv->fw.phy_integration_ver_len = tlv_len;
1168                         break;
1169                 default:
1170                         IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
1171                         break;
1172                 }
1173         }
1174
1175         if (!fw_has_capa(capa, IWL_UCODE_TLV_CAPA_USNIFFER_UNIFIED) &&
1176             usniffer_req && !*usniffer_images) {
1177                 IWL_ERR(drv,
1178                         "user selected to work with usniffer but usniffer image isn't available in ucode package\n");
1179                 return -EINVAL;
1180         }
1181
1182         if (len) {
1183                 IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
1184                 iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len);
1185                 return -EINVAL;
1186         }
1187
1188         return 0;
1189
1190  invalid_tlv_len:
1191         IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
1192  tlv_error:
1193         iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);
1194
1195         return -EINVAL;
1196 }
1197
1198 static int iwl_alloc_ucode(struct iwl_drv *drv,
1199                            struct iwl_firmware_pieces *pieces,
1200                            enum iwl_ucode_type type)
1201 {
1202         int i;
1203         struct fw_desc *sec;
1204
1205         sec = kcalloc(pieces->img[type].sec_counter, sizeof(*sec), GFP_KERNEL);
1206         if (!sec)
1207                 return -ENOMEM;
1208         drv->fw.img[type].sec = sec;
1209         drv->fw.img[type].num_sec = pieces->img[type].sec_counter;
1210
1211         for (i = 0; i < pieces->img[type].sec_counter; i++)
1212                 if (iwl_alloc_fw_desc(drv, &sec[i], get_sec(pieces, type, i)))
1213                         return -ENOMEM;
1214
1215         return 0;
1216 }
1217
1218 static int validate_sec_sizes(struct iwl_drv *drv,
1219                               struct iwl_firmware_pieces *pieces,
1220                               const struct iwl_cfg *cfg)
1221 {
1222         IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %zd\n",
1223                 get_sec_size(pieces, IWL_UCODE_REGULAR,
1224                              IWL_UCODE_SECTION_INST));
1225         IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %zd\n",
1226                 get_sec_size(pieces, IWL_UCODE_REGULAR,
1227                              IWL_UCODE_SECTION_DATA));
1228         IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %zd\n",
1229                 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST));
1230         IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %zd\n",
1231                 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA));
1232
1233         /* Verify that uCode images will fit in card's SRAM. */
1234         if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
1235             cfg->max_inst_size) {
1236                 IWL_ERR(drv, "uCode instr len %zd too large to fit in\n",
1237                         get_sec_size(pieces, IWL_UCODE_REGULAR,
1238                                      IWL_UCODE_SECTION_INST));
1239                 return -1;
1240         }
1241
1242         if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
1243             cfg->max_data_size) {
1244                 IWL_ERR(drv, "uCode data len %zd too large to fit in\n",
1245                         get_sec_size(pieces, IWL_UCODE_REGULAR,
1246                                      IWL_UCODE_SECTION_DATA));
1247                 return -1;
1248         }
1249
1250         if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) >
1251              cfg->max_inst_size) {
1252                 IWL_ERR(drv, "uCode init instr len %zd too large to fit in\n",
1253                         get_sec_size(pieces, IWL_UCODE_INIT,
1254                                      IWL_UCODE_SECTION_INST));
1255                 return -1;
1256         }
1257
1258         if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA) >
1259             cfg->max_data_size) {
1260                 IWL_ERR(drv, "uCode init data len %zd too large to fit in\n",
1261                         get_sec_size(pieces, IWL_UCODE_REGULAR,
1262                                      IWL_UCODE_SECTION_DATA));
1263                 return -1;
1264         }
1265         return 0;
1266 }
1267
1268 static struct iwl_op_mode *
1269 _iwl_op_mode_start(struct iwl_drv *drv, struct iwlwifi_opmode_table *op)
1270 {
1271         const struct iwl_op_mode_ops *ops = op->ops;
1272         struct dentry *dbgfs_dir = NULL;
1273         struct iwl_op_mode *op_mode = NULL;
1274
1275 #ifdef CONFIG_IWLWIFI_DEBUGFS
1276         drv->dbgfs_op_mode = debugfs_create_dir(op->name,
1277                                                 drv->dbgfs_drv);
1278         dbgfs_dir = drv->dbgfs_op_mode;
1279 #endif
1280
1281         op_mode = ops->start(drv->trans, drv->trans->cfg, &drv->fw, dbgfs_dir);
1282
1283 #ifdef CONFIG_IWLWIFI_DEBUGFS
1284         if (!op_mode) {
1285                 debugfs_remove_recursive(drv->dbgfs_op_mode);
1286                 drv->dbgfs_op_mode = NULL;
1287         }
1288 #endif
1289
1290         return op_mode;
1291 }
1292
1293 static void _iwl_op_mode_stop(struct iwl_drv *drv)
1294 {
1295         /* op_mode can be NULL if its start failed */
1296         if (drv->op_mode) {
1297                 iwl_op_mode_stop(drv->op_mode);
1298                 drv->op_mode = NULL;
1299
1300 #ifdef CONFIG_IWLWIFI_DEBUGFS
1301                 debugfs_remove_recursive(drv->dbgfs_op_mode);
1302                 drv->dbgfs_op_mode = NULL;
1303 #endif
1304         }
1305 }
1306
1307 /*
1308  * iwl_req_fw_callback - callback when firmware was loaded
1309  *
1310  * If loaded successfully, copies the firmware into buffers
1311  * for the card to fetch (via DMA).
1312  */
1313 static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
1314 {
1315         struct iwl_drv *drv = context;
1316         struct iwl_fw *fw = &drv->fw;
1317         struct iwl_ucode_header *ucode;
1318         struct iwlwifi_opmode_table *op;
1319         int err;
1320         struct iwl_firmware_pieces *pieces;
1321         const unsigned int api_max = drv->trans->cfg->ucode_api_max;
1322         const unsigned int api_min = drv->trans->cfg->ucode_api_min;
1323         size_t trigger_tlv_sz[FW_DBG_TRIGGER_MAX];
1324         u32 api_ver;
1325         int i;
1326         bool load_module = false;
1327         bool usniffer_images = false;
1328
1329         fw->ucode_capa.max_probe_length = IWL_DEFAULT_MAX_PROBE_LENGTH;
1330         fw->ucode_capa.standard_phy_calibration_size =
1331                         IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1332         fw->ucode_capa.n_scan_channels = IWL_DEFAULT_SCAN_CHANNELS;
1333         fw->ucode_capa.num_stations = IWL_MVM_STATION_COUNT_MAX;
1334         /* dump all fw memory areas by default */
1335         fw->dbg.dump_mask = 0xffffffff;
1336
1337         pieces = kzalloc(sizeof(*pieces), GFP_KERNEL);
1338         if (!pieces)
1339                 goto out_free_fw;
1340
1341         if (!ucode_raw)
1342                 goto try_again;
1343
1344         IWL_DEBUG_FW_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
1345                           drv->firmware_name, ucode_raw->size);
1346
1347         /* Make sure that we got at least the API version number */
1348         if (ucode_raw->size < 4) {
1349                 IWL_ERR(drv, "File size way too small!\n");
1350                 goto try_again;
1351         }
1352
1353         /* Data from ucode file:  header followed by uCode images */
1354         ucode = (struct iwl_ucode_header *)ucode_raw->data;
1355
1356         if (ucode->ver)
1357                 err = iwl_parse_v1_v2_firmware(drv, ucode_raw, pieces);
1358         else
1359                 err = iwl_parse_tlv_firmware(drv, ucode_raw, pieces,
1360                                              &fw->ucode_capa, &usniffer_images);
1361
1362         if (err)
1363                 goto try_again;
1364
1365         if (fw_has_api(&drv->fw.ucode_capa, IWL_UCODE_TLV_API_NEW_VERSION))
1366                 api_ver = drv->fw.ucode_ver;
1367         else
1368                 api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
1369
1370         /*
1371          * api_ver should match the api version forming part of the
1372          * firmware filename ... but we don't check for that and only rely
1373          * on the API version read from firmware header from here on forward
1374          */
1375         if (api_ver < api_min || api_ver > api_max) {
1376                 IWL_ERR(drv,
1377                         "Driver unable to support your firmware API. "
1378                         "Driver supports v%u, firmware is v%u.\n",
1379                         api_max, api_ver);
1380                 goto try_again;
1381         }
1382
1383         /*
1384          * In mvm uCode there is no difference between data and instructions
1385          * sections.
1386          */
1387         if (fw->type == IWL_FW_DVM && validate_sec_sizes(drv, pieces,
1388                                                          drv->trans->cfg))
1389                 goto try_again;
1390
1391         /* Allocate ucode buffers for card's bus-master loading ... */
1392
1393         /* Runtime instructions and 2 copies of data:
1394          * 1) unmodified from disk
1395          * 2) backup cache for save/restore during power-downs
1396          */
1397         for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
1398                 if (iwl_alloc_ucode(drv, pieces, i))
1399                         goto out_free_fw;
1400
1401         if (pieces->dbg_dest_tlv_init) {
1402                 size_t dbg_dest_size = sizeof(*drv->fw.dbg.dest_tlv) +
1403                         sizeof(drv->fw.dbg.dest_tlv->reg_ops[0]) *
1404                         drv->fw.dbg.n_dest_reg;
1405
1406                 drv->fw.dbg.dest_tlv = kmalloc(dbg_dest_size, GFP_KERNEL);
1407
1408                 if (!drv->fw.dbg.dest_tlv)
1409                         goto out_free_fw;
1410
1411                 if (*pieces->dbg_dest_ver == 0) {
1412                         memcpy(drv->fw.dbg.dest_tlv, pieces->dbg_dest_tlv_v1,
1413                                dbg_dest_size);
1414                 } else {
1415                         struct iwl_fw_dbg_dest_tlv_v1 *dest_tlv =
1416                                 drv->fw.dbg.dest_tlv;
1417
1418                         dest_tlv->version = pieces->dbg_dest_tlv->version;
1419                         dest_tlv->monitor_mode =
1420                                 pieces->dbg_dest_tlv->monitor_mode;
1421                         dest_tlv->size_power =
1422                                 pieces->dbg_dest_tlv->size_power;
1423                         dest_tlv->wrap_count =
1424                                 pieces->dbg_dest_tlv->wrap_count;
1425                         dest_tlv->write_ptr_reg =
1426                                 pieces->dbg_dest_tlv->write_ptr_reg;
1427                         dest_tlv->base_shift =
1428                                 pieces->dbg_dest_tlv->base_shift;
1429                         memcpy(dest_tlv->reg_ops,
1430                                pieces->dbg_dest_tlv->reg_ops,
1431                                sizeof(drv->fw.dbg.dest_tlv->reg_ops[0]) *
1432                                drv->fw.dbg.n_dest_reg);
1433
1434                         /* In version 1 of the destination tlv, which is
1435                          * relevant for internal buffer exclusively,
1436                          * the base address is part of given with the length
1437                          * of the buffer, and the size shift is give instead of
1438                          * end shift. We now store these values in base_reg,
1439                          * and end shift, and when dumping the data we'll
1440                          * manipulate it for extracting both the length and
1441                          * base address */
1442                         dest_tlv->base_reg = pieces->dbg_dest_tlv->cfg_reg;
1443                         dest_tlv->end_shift =
1444                                 pieces->dbg_dest_tlv->size_shift;
1445                 }
1446         }
1447
1448         for (i = 0; i < ARRAY_SIZE(drv->fw.dbg.conf_tlv); i++) {
1449                 if (pieces->dbg_conf_tlv[i]) {
1450                         drv->fw.dbg.conf_tlv[i] =
1451                                 kmemdup(pieces->dbg_conf_tlv[i],
1452                                         pieces->dbg_conf_tlv_len[i],
1453                                         GFP_KERNEL);
1454                         if (!drv->fw.dbg.conf_tlv[i])
1455                                 goto out_free_fw;
1456                 }
1457         }
1458
1459         memset(&trigger_tlv_sz, 0xff, sizeof(trigger_tlv_sz));
1460
1461         trigger_tlv_sz[FW_DBG_TRIGGER_MISSED_BEACONS] =
1462                 sizeof(struct iwl_fw_dbg_trigger_missed_bcon);
1463         trigger_tlv_sz[FW_DBG_TRIGGER_CHANNEL_SWITCH] = 0;
1464         trigger_tlv_sz[FW_DBG_TRIGGER_FW_NOTIF] =
1465                 sizeof(struct iwl_fw_dbg_trigger_cmd);
1466         trigger_tlv_sz[FW_DBG_TRIGGER_MLME] =
1467                 sizeof(struct iwl_fw_dbg_trigger_mlme);
1468         trigger_tlv_sz[FW_DBG_TRIGGER_STATS] =
1469                 sizeof(struct iwl_fw_dbg_trigger_stats);
1470         trigger_tlv_sz[FW_DBG_TRIGGER_RSSI] =
1471                 sizeof(struct iwl_fw_dbg_trigger_low_rssi);
1472         trigger_tlv_sz[FW_DBG_TRIGGER_TXQ_TIMERS] =
1473                 sizeof(struct iwl_fw_dbg_trigger_txq_timer);
1474         trigger_tlv_sz[FW_DBG_TRIGGER_TIME_EVENT] =
1475                 sizeof(struct iwl_fw_dbg_trigger_time_event);
1476         trigger_tlv_sz[FW_DBG_TRIGGER_BA] =
1477                 sizeof(struct iwl_fw_dbg_trigger_ba);
1478         trigger_tlv_sz[FW_DBG_TRIGGER_TDLS] =
1479                 sizeof(struct iwl_fw_dbg_trigger_tdls);
1480
1481         for (i = 0; i < ARRAY_SIZE(drv->fw.dbg.trigger_tlv); i++) {
1482                 if (pieces->dbg_trigger_tlv[i]) {
1483                         /*
1484                          * If the trigger isn't long enough, WARN and exit.
1485                          * Someone is trying to debug something and he won't
1486                          * be able to catch the bug he is trying to chase.
1487                          * We'd better be noisy to be sure he knows what's
1488                          * going on.
1489                          */
1490                         if (WARN_ON(pieces->dbg_trigger_tlv_len[i] <
1491                                     (trigger_tlv_sz[i] +
1492                                      sizeof(struct iwl_fw_dbg_trigger_tlv))))
1493                                 goto out_free_fw;
1494                         drv->fw.dbg.trigger_tlv_len[i] =
1495                                 pieces->dbg_trigger_tlv_len[i];
1496                         drv->fw.dbg.trigger_tlv[i] =
1497                                 kmemdup(pieces->dbg_trigger_tlv[i],
1498                                         drv->fw.dbg.trigger_tlv_len[i],
1499                                         GFP_KERNEL);
1500                         if (!drv->fw.dbg.trigger_tlv[i])
1501                                 goto out_free_fw;
1502                 }
1503         }
1504
1505         /* Now that we can no longer fail, copy information */
1506
1507         drv->fw.dbg.mem_tlv = pieces->dbg_mem_tlv;
1508         pieces->dbg_mem_tlv = NULL;
1509         drv->fw.dbg.n_mem_tlv = pieces->n_mem_tlv;
1510
1511         /*
1512          * The (size - 16) / 12 formula is based on the information recorded
1513          * for each event, which is of mode 1 (including timestamp) for all
1514          * new microcodes that include this information.
1515          */
1516         fw->init_evtlog_ptr = pieces->init_evtlog_ptr;
1517         if (pieces->init_evtlog_size)
1518                 fw->init_evtlog_size = (pieces->init_evtlog_size - 16)/12;
1519         else
1520                 fw->init_evtlog_size =
1521                         drv->trans->trans_cfg->base_params->max_event_log_size;
1522         fw->init_errlog_ptr = pieces->init_errlog_ptr;
1523         fw->inst_evtlog_ptr = pieces->inst_evtlog_ptr;
1524         if (pieces->inst_evtlog_size)
1525                 fw->inst_evtlog_size = (pieces->inst_evtlog_size - 16)/12;
1526         else
1527                 fw->inst_evtlog_size =
1528                         drv->trans->trans_cfg->base_params->max_event_log_size;
1529         fw->inst_errlog_ptr = pieces->inst_errlog_ptr;
1530
1531         /*
1532          * figure out the offset of chain noise reset and gain commands
1533          * base on the size of standard phy calibration commands table size
1534          */
1535         if (fw->ucode_capa.standard_phy_calibration_size >
1536             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1537                 fw->ucode_capa.standard_phy_calibration_size =
1538                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1539
1540         /* We have our copies now, allow OS release its copies */
1541         release_firmware(ucode_raw);
1542
1543         mutex_lock(&iwlwifi_opmode_table_mtx);
1544         switch (fw->type) {
1545         case IWL_FW_DVM:
1546                 op = &iwlwifi_opmode_table[DVM_OP_MODE];
1547                 break;
1548         default:
1549                 WARN(1, "Invalid fw type %d\n", fw->type);
1550                 fallthrough;
1551         case IWL_FW_MVM:
1552                 op = &iwlwifi_opmode_table[MVM_OP_MODE];
1553                 break;
1554         }
1555
1556         IWL_INFO(drv, "loaded firmware version %s op_mode %s\n",
1557                  drv->fw.fw_version, op->name);
1558
1559         iwl_dbg_tlv_load_bin(drv->trans->dev, drv->trans);
1560
1561         /* add this device to the list of devices using this op_mode */
1562         list_add_tail(&drv->list, &op->drv);
1563
1564         if (op->ops) {
1565                 drv->op_mode = _iwl_op_mode_start(drv, op);
1566
1567                 if (!drv->op_mode) {
1568                         mutex_unlock(&iwlwifi_opmode_table_mtx);
1569                         goto out_unbind;
1570                 }
1571         } else {
1572                 load_module = true;
1573         }
1574         mutex_unlock(&iwlwifi_opmode_table_mtx);
1575
1576         /*
1577          * Complete the firmware request last so that
1578          * a driver unbind (stop) doesn't run while we
1579          * are doing the start() above.
1580          */
1581         complete(&drv->request_firmware_complete);
1582
1583         /*
1584          * Load the module last so we don't block anything
1585          * else from proceeding if the module fails to load
1586          * or hangs loading.
1587          */
1588         if (load_module) {
1589                 request_module("%s", op->name);
1590 #ifdef CONFIG_IWLWIFI_OPMODE_MODULAR
1591                 if (err)
1592                         IWL_ERR(drv,
1593                                 "failed to load module %s (error %d), is dynamic loading enabled?\n",
1594                                 op->name, err);
1595 #endif
1596         }
1597         goto free;
1598
1599  try_again:
1600         /* try next, if any */
1601         release_firmware(ucode_raw);
1602         if (iwl_request_firmware(drv, false))
1603                 goto out_unbind;
1604         goto free;
1605
1606  out_free_fw:
1607         release_firmware(ucode_raw);
1608  out_unbind:
1609         complete(&drv->request_firmware_complete);
1610         device_release_driver(drv->trans->dev);
1611  free:
1612         if (pieces) {
1613                 for (i = 0; i < ARRAY_SIZE(pieces->img); i++)
1614                         kfree(pieces->img[i].sec);
1615                 kfree(pieces->dbg_mem_tlv);
1616                 kfree(pieces);
1617         }
1618 }
1619
1620 struct iwl_drv *iwl_drv_start(struct iwl_trans *trans)
1621 {
1622         struct iwl_drv *drv;
1623         int ret;
1624
1625         drv = kzalloc(sizeof(*drv), GFP_KERNEL);
1626         if (!drv) {
1627                 ret = -ENOMEM;
1628                 goto err;
1629         }
1630
1631         drv->trans = trans;
1632         drv->dev = trans->dev;
1633
1634         init_completion(&drv->request_firmware_complete);
1635         INIT_LIST_HEAD(&drv->list);
1636
1637 #ifdef CONFIG_IWLWIFI_DEBUGFS
1638         /* Create the device debugfs entries. */
1639         drv->dbgfs_drv = debugfs_create_dir(dev_name(trans->dev),
1640                                             iwl_dbgfs_root);
1641
1642         /* Create transport layer debugfs dir */
1643         drv->trans->dbgfs_dir = debugfs_create_dir("trans", drv->dbgfs_drv);
1644 #endif
1645
1646         drv->trans->dbg.domains_bitmap = IWL_TRANS_FW_DBG_DOMAIN(drv->trans);
1647
1648         ret = iwl_request_firmware(drv, true);
1649         if (ret) {
1650                 IWL_ERR(trans, "Couldn't request the fw\n");
1651                 goto err_fw;
1652         }
1653
1654         return drv;
1655
1656 err_fw:
1657 #ifdef CONFIG_IWLWIFI_DEBUGFS
1658         debugfs_remove_recursive(drv->dbgfs_drv);
1659         iwl_dbg_tlv_free(drv->trans);
1660 #endif
1661         kfree(drv);
1662 err:
1663         return ERR_PTR(ret);
1664 }
1665
1666 void iwl_drv_stop(struct iwl_drv *drv)
1667 {
1668         wait_for_completion(&drv->request_firmware_complete);
1669
1670         _iwl_op_mode_stop(drv);
1671
1672         iwl_dealloc_ucode(drv);
1673
1674         mutex_lock(&iwlwifi_opmode_table_mtx);
1675         /*
1676          * List is empty (this item wasn't added)
1677          * when firmware loading failed -- in that
1678          * case we can't remove it from any list.
1679          */
1680         if (!list_empty(&drv->list))
1681                 list_del(&drv->list);
1682         mutex_unlock(&iwlwifi_opmode_table_mtx);
1683
1684 #ifdef CONFIG_IWLWIFI_DEBUGFS
1685         drv->trans->ops->debugfs_cleanup(drv->trans);
1686
1687         debugfs_remove_recursive(drv->dbgfs_drv);
1688 #endif
1689
1690         iwl_dbg_tlv_free(drv->trans);
1691
1692         kfree(drv);
1693 }
1694
1695
1696 /* shared module parameters */
1697 struct iwl_mod_params iwlwifi_mod_params = {
1698         .fw_restart = true,
1699         .bt_coex_active = true,
1700         .power_level = IWL_POWER_INDEX_1,
1701         .uapsd_disable = IWL_DISABLE_UAPSD_BSS | IWL_DISABLE_UAPSD_P2P_CLIENT,
1702         .enable_ini = true,
1703         /* the rest are 0 by default */
1704 };
1705 IWL_EXPORT_SYMBOL(iwlwifi_mod_params);
1706
1707 int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops)
1708 {
1709         int i;
1710         struct iwl_drv *drv;
1711         struct iwlwifi_opmode_table *op;
1712
1713         mutex_lock(&iwlwifi_opmode_table_mtx);
1714         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1715                 op = &iwlwifi_opmode_table[i];
1716                 if (strcmp(op->name, name))
1717                         continue;
1718                 op->ops = ops;
1719                 /* TODO: need to handle exceptional case */
1720                 list_for_each_entry(drv, &op->drv, list)
1721                         drv->op_mode = _iwl_op_mode_start(drv, op);
1722
1723                 mutex_unlock(&iwlwifi_opmode_table_mtx);
1724                 return 0;
1725         }
1726         mutex_unlock(&iwlwifi_opmode_table_mtx);
1727         return -EIO;
1728 }
1729 IWL_EXPORT_SYMBOL(iwl_opmode_register);
1730
1731 void iwl_opmode_deregister(const char *name)
1732 {
1733         int i;
1734         struct iwl_drv *drv;
1735
1736         mutex_lock(&iwlwifi_opmode_table_mtx);
1737         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1738                 if (strcmp(iwlwifi_opmode_table[i].name, name))
1739                         continue;
1740                 iwlwifi_opmode_table[i].ops = NULL;
1741
1742                 /* call the stop routine for all devices */
1743                 list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list)
1744                         _iwl_op_mode_stop(drv);
1745
1746                 mutex_unlock(&iwlwifi_opmode_table_mtx);
1747                 return;
1748         }
1749         mutex_unlock(&iwlwifi_opmode_table_mtx);
1750 }
1751 IWL_EXPORT_SYMBOL(iwl_opmode_deregister);
1752
1753 static int __init iwl_drv_init(void)
1754 {
1755         int i, err;
1756
1757         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++)
1758                 INIT_LIST_HEAD(&iwlwifi_opmode_table[i].drv);
1759
1760         pr_info(DRV_DESCRIPTION "\n");
1761
1762 #ifdef CONFIG_IWLWIFI_DEBUGFS
1763         /* Create the root of iwlwifi debugfs subsystem. */
1764         iwl_dbgfs_root = debugfs_create_dir(DRV_NAME, NULL);
1765 #endif
1766
1767         err = iwl_pci_register_driver();
1768         if (err)
1769                 goto cleanup_debugfs;
1770
1771         return 0;
1772
1773 cleanup_debugfs:
1774 #ifdef CONFIG_IWLWIFI_DEBUGFS
1775         debugfs_remove_recursive(iwl_dbgfs_root);
1776 #endif
1777         return err;
1778 }
1779 module_init(iwl_drv_init);
1780
1781 static void __exit iwl_drv_exit(void)
1782 {
1783         iwl_pci_unregister_driver();
1784
1785 #ifdef CONFIG_IWLWIFI_DEBUGFS
1786         debugfs_remove_recursive(iwl_dbgfs_root);
1787 #endif
1788 }
1789 module_exit(iwl_drv_exit);
1790
1791 #ifdef CONFIG_IWLWIFI_DEBUG
1792 module_param_named(debug, iwlwifi_mod_params.debug_level, uint, 0644);
1793 MODULE_PARM_DESC(debug, "debug output mask");
1794 #endif
1795
1796 module_param_named(swcrypto, iwlwifi_mod_params.swcrypto, int, 0444);
1797 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1798 module_param_named(11n_disable, iwlwifi_mod_params.disable_11n, uint, 0444);
1799 MODULE_PARM_DESC(11n_disable,
1800         "disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX");
1801 module_param_named(amsdu_size, iwlwifi_mod_params.amsdu_size, int, 0444);
1802 MODULE_PARM_DESC(amsdu_size,
1803                  "amsdu size 0: 12K for multi Rx queue devices, 2K for AX210 devices, "
1804                  "4K for other devices 1:4K 2:8K 3:12K (16K buffers) 4: 2K (default 0)");
1805 module_param_named(fw_restart, iwlwifi_mod_params.fw_restart, bool, 0444);
1806 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error (default true)");
1807
1808 module_param_named(nvm_file, iwlwifi_mod_params.nvm_file, charp, 0444);
1809 MODULE_PARM_DESC(nvm_file, "NVM file name");
1810
1811 module_param_named(uapsd_disable, iwlwifi_mod_params.uapsd_disable, uint, 0644);
1812 MODULE_PARM_DESC(uapsd_disable,
1813                  "disable U-APSD functionality bitmap 1: BSS 2: P2P Client (default: 3)");
1814 module_param_named(enable_ini, iwlwifi_mod_params.enable_ini,
1815                    bool, S_IRUGO | S_IWUSR);
1816 MODULE_PARM_DESC(enable_ini,
1817                  "Enable debug INI TLV FW debug infrastructure (default: true");
1818
1819 /*
1820  * set bt_coex_active to true, uCode will do kill/defer
1821  * every time the priority line is asserted (BT is sending signals on the
1822  * priority line in the PCIx).
1823  * set bt_coex_active to false, uCode will ignore the BT activity and
1824  * perform the normal operation
1825  *
1826  * User might experience transmit issue on some platform due to WiFi/BT
1827  * co-exist problem. The possible behaviors are:
1828  *   Able to scan and finding all the available AP
1829  *   Not able to associate with any AP
1830  * On those platforms, WiFi communication can be restored by set
1831  * "bt_coex_active" module parameter to "false"
1832  *
1833  * default: bt_coex_active = true (BT_COEX_ENABLE)
1834  */
1835 module_param_named(bt_coex_active, iwlwifi_mod_params.bt_coex_active,
1836                    bool, 0444);
1837 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1838
1839 module_param_named(led_mode, iwlwifi_mod_params.led_mode, int, 0444);
1840 MODULE_PARM_DESC(led_mode, "0=system default, "
1841                 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1842
1843 module_param_named(power_save, iwlwifi_mod_params.power_save, bool, 0444);
1844 MODULE_PARM_DESC(power_save,
1845                  "enable WiFi power management (default: disable)");
1846
1847 module_param_named(power_level, iwlwifi_mod_params.power_level, int, 0444);
1848 MODULE_PARM_DESC(power_level,
1849                  "default power save level (range from 1 - 5, default: 1)");
1850
1851 module_param_named(disable_11ac, iwlwifi_mod_params.disable_11ac, bool, 0444);
1852 MODULE_PARM_DESC(disable_11ac, "Disable VHT capabilities (default: false)");
1853
1854 module_param_named(remove_when_gone,
1855                    iwlwifi_mod_params.remove_when_gone, bool,
1856                    0444);
1857 MODULE_PARM_DESC(remove_when_gone,
1858                  "Remove dev from PCIe bus if it is deemed inaccessible (default: false)");
1859
1860 module_param_named(disable_11ax, iwlwifi_mod_params.disable_11ax, bool,
1861                    S_IRUGO);
1862 MODULE_PARM_DESC(disable_11ax, "Disable HE capabilities (default: false)");