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

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2007 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  10  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  11  * Copyright(c) 2018 - 2019 Intel Corporation
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of version 2 of the GNU General Public License as
  15  * published by the Free Software Foundation.
  16  *
  17  * This program is distributed in the hope that it will be useful, but
  18  * WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20  * General Public License for more details.
  21  *
  22  * The full GNU General Public License is included in this distribution
  23  * in the file called COPYING.
  24  *
  25  * Contact Information:
  26  *  Intel Linux Wireless <linuxwifi@intel.com>
  27  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  28  *
  29  * BSD LICENSE
  30  *
  31  * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
  32  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  33  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  34  * Copyright(c) 2018 - 2019 Intel Corporation
  35  * All rights reserved.
  36  *
  37  * Redistribution and use in source and binary forms, with or without
  38  * modification, are permitted provided that the following conditions
  39  * are met:
  40  *
  41  *  * Redistributions of source code must retain the above copyright
  42  *    notice, this list of conditions and the following disclaimer.
  43  *  * Redistributions in binary form must reproduce the above copyright
  44  *    notice, this list of conditions and the following disclaimer in
  45  *    the documentation and/or other materials provided with the
  46  *    distribution.
  47  *  * Neither the name Intel Corporation nor the names of its
  48  *    contributors may be used to endorse or promote products derived
  49  *    from this software without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  52  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  53  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  54  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  55  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  56  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  57  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  58  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  59  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  60  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  61  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  62  *
  63  *****************************************************************************/
  64 #include <linux/completion.h>
  65 #include <linux/dma-mapping.h>
  66 #include <linux/firmware.h>
  67 #include <linux/module.h>
  68 #include <linux/vmalloc.h>
  69
  70 #include "iwl-drv.h"
  71 #include "iwl-csr.h"
  72 #include "iwl-debug.h"
  73 #include "iwl-trans.h"
  74 #include "iwl-op-mode.h"
  75 #include "iwl-agn-hw.h"
  76 #include "fw/img.h"
  77 #include "iwl-dbg-tlv.h"
  78 #include "iwl-config.h"
  79 #include "iwl-modparams.h"
  80 #include "fw/api/alive.h"
  81
  82 /******************************************************************************
  83  *
  84  * module boiler plate
  85  *
  86  ******************************************************************************/
  87
  88 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi driver for Linux"
  89 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  90 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  91 MODULE_LICENSE("GPL");
  92
  93 #ifdef CONFIG_IWLWIFI_DEBUGFS
  94 static struct dentry *iwl_dbgfs_root;
  95 #endif
  96
  97 /**
  98  * struct iwl_drv - drv common data
  99  * @list: list of drv structures using this opmode
 100  * @fw: the iwl_fw structure
 101  * @op_mode: the running op_mode
 102  * @trans: transport layer
 103  * @dev: for debug prints only
 104  * @fw_index: firmware revision to try loading
 105  * @firmware_name: composite filename of ucode file to load
 106  * @request_firmware_complete: the firmware has been obtained from user space
 107  */
 108 struct iwl_drv {
 109         struct list_head list;
 110         struct iwl_fw fw;
 111
 112         struct iwl_op_mode *op_mode;
 113         struct iwl_trans *trans;
 114         struct device *dev;
 115
 116         int fw_index;                   /* firmware we're trying to load */
 117         char firmware_name[64];         /* name of firmware file to load */
 118
 119         struct completion request_firmware_complete;
 120
 121 #ifdef CONFIG_IWLWIFI_DEBUGFS
 122         struct dentry *dbgfs_drv;
 123         struct dentry *dbgfs_trans;
 124         struct dentry *dbgfs_op_mode;
 125 #endif
 126 };
 127
 128 enum {
 129         DVM_OP_MODE,
 130         MVM_OP_MODE,
 131 };
 132
 133 /* Protects the table contents, i.e. the ops pointer & drv list */
 134 static struct mutex iwlwifi_opmode_table_mtx;
 135 static struct iwlwifi_opmode_table {
 136         const char *name;                       /* name: iwldvm, iwlmvm, etc */
 137         const struct iwl_op_mode_ops *ops;      /* pointer to op_mode ops */
 138         struct list_head drv;           /* list of devices using this op_mode */
 139 } iwlwifi_opmode_table[] = {            /* ops set when driver is initialized */
 140         [DVM_OP_MODE] = { .name = "iwldvm", .ops = NULL },
 141         [MVM_OP_MODE] = { .name = "iwlmvm", .ops = NULL },
 142 };
 143
 144 #define IWL_DEFAULT_SCAN_CHANNELS 40
 145
 146 /*
 147  * struct fw_sec: Just for the image parsing process.
 148  * For the fw storage we are using struct fw_desc.
 149  */
 150 struct fw_sec {
 151         const void *data;               /* the sec data */
 152         size_t size;                    /* section size */
 153         u32 offset;                     /* offset of writing in the device */
 154 };
 155
 156 static void iwl_free_fw_desc(struct iwl_drv *drv, struct fw_desc *desc)
 157 {
 158         vfree(desc->data);
 159         desc->data = NULL;
 160         desc->len = 0;
 161 }
 162
 163 static void iwl_free_fw_img(struct iwl_drv *drv, struct fw_img *img)
 164 {
 165         int i;
 166         for (i = 0; i < img->num_sec; i++)
 167                 iwl_free_fw_desc(drv, &img->sec[i]);
 168         kfree(img->sec);
 169 }
 170
 171 static void iwl_dealloc_ucode(struct iwl_drv *drv)
 172 {
 173         int i;
 174
 175         kfree(drv->fw.dbg.dest_tlv);
 176         for (i = 0; i < ARRAY_SIZE(drv->fw.dbg.conf_tlv); i++)
 177                 kfree(drv->fw.dbg.conf_tlv[i]);
 178         for (i = 0; i < ARRAY_SIZE(drv->fw.dbg.trigger_tlv); i++)
 179                 kfree(drv->fw.dbg.trigger_tlv[i]);
 180         kfree(drv->fw.dbg.mem_tlv);
 181         kfree(drv->fw.iml);
 182         kfree(drv->fw.ucode_capa.cmd_versions);
 183
 184         for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
 185                 iwl_free_fw_img(drv, drv->fw.img + i);
 186 }
 187
 188 static int iwl_alloc_fw_desc(struct iwl_drv *drv, struct fw_desc *desc,
 189                              struct fw_sec *sec)
 190 {
 191         void *data;
 192
 193         desc->data = NULL;
 194
 195         if (!sec || !sec->size)
 196                 return -EINVAL;
 197
 198         data = vmalloc(sec->size);
 199         if (!data)
 200                 return -ENOMEM;
 201
 202         desc->len = sec->size;
 203         desc->offset = sec->offset;
 204         memcpy(data, sec->data, desc->len);
 205         desc->data = data;
 206
 207         return 0;
 208 }
 209
 210 static void iwl_req_fw_callback(const struct firmware *ucode_raw,
 211                                 void *context);
 212
 213 static int iwl_request_firmware(struct iwl_drv *drv, bool first)
 214 {
 215         const struct iwl_cfg *cfg = drv->trans->cfg;
 216         char tag[8];
 217
 218         if (drv->trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_9000 &&
 219             (CSR_HW_REV_STEP(drv->trans->hw_rev) != SILICON_B_STEP &&
 220              CSR_HW_REV_STEP(drv->trans->hw_rev) != SILICON_C_STEP)) {
 221                 IWL_ERR(drv,
 222                         "Only HW steps B and C are currently supported (0x%0x)\n",
 223                         drv->trans->hw_rev);
 224                 return -EINVAL;
 225         }
 226
 227         if (first) {
 228                 drv->fw_index = cfg->ucode_api_max;
 229                 sprintf(tag, "%d", drv->fw_index);
 230         } else {
 231                 drv->fw_index--;
 232                 sprintf(tag, "%d", drv->fw_index);
 233         }
 234
 235         if (drv->fw_index < cfg->ucode_api_min) {
 236                 IWL_ERR(drv, "no suitable firmware found!\n");
 237
 238                 if (cfg->ucode_api_min == cfg->ucode_api_max) {
 239                         IWL_ERR(drv, "%s%d is required\n", cfg->fw_name_pre,
 240                                 cfg->ucode_api_max);
 241                 } else {
 242                         IWL_ERR(drv, "minimum version required: %s%d\n",
 243                                 cfg->fw_name_pre, cfg->ucode_api_min);
 244                         IWL_ERR(drv, "maximum version supported: %s%d\n",
 245                                 cfg->fw_name_pre, cfg->ucode_api_max);
 246                 }
 247
 248                 IWL_ERR(drv,
 249                         "check git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git\n");
 250                 return -ENOENT;
 251         }
 252
 253         snprintf(drv->firmware_name, sizeof(drv->firmware_name), "%s%s.ucode",
 254                  cfg->fw_name_pre, tag);
 255
 256         IWL_DEBUG_FW_INFO(drv, "attempting to load firmware '%s'\n",
 257                           drv->firmware_name);
 258
 259         return request_firmware_nowait(THIS_MODULE, 1, drv->firmware_name,
 260                                        drv->trans->dev,
 261                                        GFP_KERNEL, drv, iwl_req_fw_callback);
 262 }
 263
 264 struct fw_img_parsing {
 265         struct fw_sec *sec;
 266         int sec_counter;
 267 };
 268
 269 /*
 270  * struct fw_sec_parsing: to extract fw section and it's offset from tlv
 271  */
 272 struct fw_sec_parsing {
 273         __le32 offset;
 274         const u8 data[];
 275 } __packed;
 276
 277 /**
 278  * struct iwl_tlv_calib_data - parse the default calib data from TLV
 279  *
 280  * @ucode_type: the uCode to which the following default calib relates.
 281  * @calib: default calibrations.
 282  */
 283 struct iwl_tlv_calib_data {
 284         __le32 ucode_type;
 285         struct iwl_tlv_calib_ctrl calib;
 286 } __packed;
 287
 288 struct iwl_firmware_pieces {
 289         struct fw_img_parsing img[IWL_UCODE_TYPE_MAX];
 290
 291         u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
 292         u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
 293
 294         /* FW debug data parsed for driver usage */
 295         bool dbg_dest_tlv_init;
 296         u8 *dbg_dest_ver;
 297         union {
 298                 struct iwl_fw_dbg_dest_tlv *dbg_dest_tlv;
 299                 struct iwl_fw_dbg_dest_tlv_v1 *dbg_dest_tlv_v1;
 300         };
 301         struct iwl_fw_dbg_conf_tlv *dbg_conf_tlv[FW_DBG_CONF_MAX];
 302         size_t dbg_conf_tlv_len[FW_DBG_CONF_MAX];
 303         struct iwl_fw_dbg_trigger_tlv *dbg_trigger_tlv[FW_DBG_TRIGGER_MAX];
 304         size_t dbg_trigger_tlv_len[FW_DBG_TRIGGER_MAX];
 305         struct iwl_fw_dbg_mem_seg_tlv *dbg_mem_tlv;
 306         size_t n_mem_tlv;
 307 };
 308
 309 /*
 310  * These functions are just to extract uCode section data from the pieces
 311  * structure.
 312  */
 313 static struct fw_sec *get_sec(struct iwl_firmware_pieces *pieces,
 314                               enum iwl_ucode_type type,
 315                               int  sec)
 316 {
 317         return &pieces->img[type].sec[sec];
 318 }
 319
 320 static void alloc_sec_data(struct iwl_firmware_pieces *pieces,
 321                            enum iwl_ucode_type type,
 322                            int sec)
 323 {
 324         struct fw_img_parsing *img = &pieces->img[type];
 325         struct fw_sec *sec_memory;
 326         int size = sec + 1;
 327         size_t alloc_size = sizeof(*img->sec) * size;
 328
 329         if (img->sec && img->sec_counter >= size)
 330                 return;
 331
 332         sec_memory = krealloc(img->sec, alloc_size, GFP_KERNEL);
 333         if (!sec_memory)
 334                 return;
 335
 336         img->sec = sec_memory;
 337         img->sec_counter = size;
 338 }
 339
 340 static void set_sec_data(struct iwl_firmware_pieces *pieces,
 341                          enum iwl_ucode_type type,
 342                          int sec,
 343                          const void *data)
 344 {
 345         alloc_sec_data(pieces, type, sec);
 346
 347         pieces->img[type].sec[sec].data = data;
 348 }
 349
 350 static void set_sec_size(struct iwl_firmware_pieces *pieces,
 351                          enum iwl_ucode_type type,
 352                          int sec,
 353                          size_t size)
 354 {
 355         alloc_sec_data(pieces, type, sec);
 356
 357         pieces->img[type].sec[sec].size = size;
 358 }
 359
 360 static size_t get_sec_size(struct iwl_firmware_pieces *pieces,
 361                            enum iwl_ucode_type type,
 362                            int sec)
 363 {
 364         return pieces->img[type].sec[sec].size;
 365 }
 366
 367 static void set_sec_offset(struct iwl_firmware_pieces *pieces,
 368                            enum iwl_ucode_type type,
 369                            int sec,
 370                            u32 offset)
 371 {
 372         alloc_sec_data(pieces, type, sec);
 373
 374         pieces->img[type].sec[sec].offset = offset;
 375 }
 376
 377 static int iwl_store_cscheme(struct iwl_fw *fw, const u8 *data, const u32 len)
 378 {
 379         int i, j;
 380         struct iwl_fw_cscheme_list *l = (struct iwl_fw_cscheme_list *)data;
 381         struct iwl_fw_cipher_scheme *fwcs;
 382
 383         if (len < sizeof(*l) ||
 384             len < sizeof(l->size) + l->size * sizeof(l->cs[0]))
 385                 return -EINVAL;
 386
 387         for (i = 0, j = 0; i < IWL_UCODE_MAX_CS && i < l->size; i++) {
 388                 fwcs = &l->cs[j];
 389
 390                 /* we skip schemes with zero cipher suite selector */
 391                 if (!fwcs->cipher)
 392                         continue;
 393
 394                 fw->cs[j++] = *fwcs;
 395         }
 396
 397         return 0;
 398 }
 399
 400 /*
 401  * Gets uCode section from tlv.
 402  */
 403 static int iwl_store_ucode_sec(struct iwl_firmware_pieces *pieces,
 404                                const void *data, enum iwl_ucode_type type,
 405                                int size)
 406 {
 407         struct fw_img_parsing *img;
 408         struct fw_sec *sec;
 409         struct fw_sec_parsing *sec_parse;
 410         size_t alloc_size;
 411
 412         if (WARN_ON(!pieces || !data || type >= IWL_UCODE_TYPE_MAX))
 413                 return -1;
 414
 415         sec_parse = (struct fw_sec_parsing *)data;
 416
 417         img = &pieces->img[type];
 418
 419         alloc_size = sizeof(*img->sec) * (img->sec_counter + 1);
 420         sec = krealloc(img->sec, alloc_size, GFP_KERNEL);
 421         if (!sec)
 422                 return -ENOMEM;
 423         img->sec = sec;
 424
 425         sec = &img->sec[img->sec_counter];
 426
 427         sec->offset = le32_to_cpu(sec_parse->offset);
 428         sec->data = sec_parse->data;
 429         sec->size = size - sizeof(sec_parse->offset);
 430
 431         ++img->sec_counter;
 432
 433         return 0;
 434 }
 435
 436 static int iwl_set_default_calib(struct iwl_drv *drv, const u8 *data)
 437 {
 438         struct iwl_tlv_calib_data *def_calib =
 439                                         (struct iwl_tlv_calib_data *)data;
 440         u32 ucode_type = le32_to_cpu(def_calib->ucode_type);
 441         if (ucode_type >= IWL_UCODE_TYPE_MAX) {
 442                 IWL_ERR(drv, "Wrong ucode_type %u for default calibration.\n",
 443                         ucode_type);
 444                 return -EINVAL;
 445         }
 446         drv->fw.default_calib[ucode_type].flow_trigger =
 447                 def_calib->calib.flow_trigger;
 448         drv->fw.default_calib[ucode_type].event_trigger =
 449                 def_calib->calib.event_trigger;
 450
 451         return 0;
 452 }
 453
 454 static void iwl_set_ucode_api_flags(struct iwl_drv *drv, const u8 *data,
 455                                     struct iwl_ucode_capabilities *capa)
 456 {
 457         const struct iwl_ucode_api *ucode_api = (void *)data;
 458         u32 api_index = le32_to_cpu(ucode_api->api_index);
 459         u32 api_flags = le32_to_cpu(ucode_api->api_flags);
 460         int i;
 461
 462         if (api_index >= DIV_ROUND_UP(NUM_IWL_UCODE_TLV_API, 32)) {
 463                 IWL_WARN(drv,
 464                          "api flags index %d larger than supported by driver\n",
 465                          api_index);
 466                 return;
 467         }
 468
 469         for (i = 0; i < 32; i++) {
 470                 if (api_flags & BIT(i))
 471                         __set_bit(i + 32 * api_index, capa->_api);
 472         }
 473 }
 474
 475 static void iwl_set_ucode_capabilities(struct iwl_drv *drv, const u8 *data,
 476                                        struct iwl_ucode_capabilities *capa)
 477 {
 478         const struct iwl_ucode_capa *ucode_capa = (void *)data;
 479         u32 api_index = le32_to_cpu(ucode_capa->api_index);
 480         u32 api_flags = le32_to_cpu(ucode_capa->api_capa);
 481         int i;
 482
 483         if (api_index >= DIV_ROUND_UP(NUM_IWL_UCODE_TLV_CAPA, 32)) {
 484                 IWL_WARN(drv,
 485                          "capa flags index %d larger than supported by driver\n",
 486                          api_index);
 487                 return;
 488         }
 489
 490         for (i = 0; i < 32; i++) {
 491                 if (api_flags & BIT(i))
 492                         __set_bit(i + 32 * api_index, capa->_capa);
 493         }
 494 }
 495
 496 static const char *iwl_reduced_fw_name(struct iwl_drv *drv)
 497 {
 498         const char *name = drv->firmware_name;
 499
 500         if (strncmp(name, "iwlwifi-", 8) == 0)
 501                 name += 8;
 502
 503         return name;
 504 }
 505
 506 static int iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
 507                                     const struct firmware *ucode_raw,
 508                                     struct iwl_firmware_pieces *pieces)
 509 {
 510         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
 511         u32 api_ver, hdr_size, build;
 512         char buildstr[25];
 513         const u8 *src;
 514
 515         drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
 516         api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
 517
 518         switch (api_ver) {
 519         default:
 520                 hdr_size = 28;
 521                 if (ucode_raw->size < hdr_size) {
 522                         IWL_ERR(drv, "File size too small!\n");
 523                         return -EINVAL;
 524                 }
 525                 build = le32_to_cpu(ucode->u.v2.build);
 526                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 527                              le32_to_cpu(ucode->u.v2.inst_size));
 528                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 529                              le32_to_cpu(ucode->u.v2.data_size));
 530                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 531                              le32_to_cpu(ucode->u.v2.init_size));
 532                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 533                              le32_to_cpu(ucode->u.v2.init_data_size));
 534                 src = ucode->u.v2.data;
 535                 break;
 536         case 0:
 537         case 1:
 538         case 2:
 539                 hdr_size = 24;
 540                 if (ucode_raw->size < hdr_size) {
 541                         IWL_ERR(drv, "File size too small!\n");
 542                         return -EINVAL;
 543                 }
 544                 build = 0;
 545                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 546                              le32_to_cpu(ucode->u.v1.inst_size));
 547                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 548                              le32_to_cpu(ucode->u.v1.data_size));
 549                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 550                              le32_to_cpu(ucode->u.v1.init_size));
 551                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 552                              le32_to_cpu(ucode->u.v1.init_data_size));
 553                 src = ucode->u.v1.data;
 554                 break;
 555         }
 556
 557         if (build)
 558                 sprintf(buildstr, " build %u", build);
 559         else
 560                 buildstr[0] = '\0';
 561
 562         snprintf(drv->fw.fw_version,
 563                  sizeof(drv->fw.fw_version),
 564                  "%u.%u.%u.%u%s %s",
 565                  IWL_UCODE_MAJOR(drv->fw.ucode_ver),
 566                  IWL_UCODE_MINOR(drv->fw.ucode_ver),
 567                  IWL_UCODE_API(drv->fw.ucode_ver),
 568                  IWL_UCODE_SERIAL(drv->fw.ucode_ver),
 569                  buildstr, iwl_reduced_fw_name(drv));
 570
 571         /* Verify size of file vs. image size info in file's header */
 572
 573         if (ucode_raw->size != hdr_size +
 574             get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) +
 575             get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) +
 576             get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) +
 577             get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)) {
 578
 579                 IWL_ERR(drv,
 580                         "uCode file size %d does not match expected size\n",
 581                         (int)ucode_raw->size);
 582                 return -EINVAL;
 583         }
 584
 585
 586         set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, src);
 587         src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST);
 588         set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 589                        IWLAGN_RTC_INST_LOWER_BOUND);
 590         set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, src);
 591         src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA);
 592         set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 593                        IWLAGN_RTC_DATA_LOWER_BOUND);
 594         set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, src);
 595         src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST);
 596         set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 597                        IWLAGN_RTC_INST_LOWER_BOUND);
 598         set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, src);
 599         src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA);
 600         set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 601                        IWLAGN_RTC_DATA_LOWER_BOUND);
 602         return 0;
 603 }
 604
 605 #define FW_ADDR_CACHE_CONTROL 0xC0000000
 606
 607 static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
 608                                 const struct firmware *ucode_raw,
 609                                 struct iwl_firmware_pieces *pieces,
 610                                 struct iwl_ucode_capabilities *capa,
 611                                 bool *usniffer_images)
 612 {
 613         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
 614         struct iwl_ucode_tlv *tlv;
 615         size_t len = ucode_raw->size;
 616         const u8 *data;
 617         u32 tlv_len;
 618         u32 usniffer_img;
 619         enum iwl_ucode_tlv_type tlv_type;
 620         const u8 *tlv_data;
 621         char buildstr[25];
 622         u32 build, paging_mem_size;
 623         int num_of_cpus;
 624         bool usniffer_req = false;
 625
 626         if (len < sizeof(*ucode)) {
 627                 IWL_ERR(drv, "uCode has invalid length: %zd\n", len);
 628                 return -EINVAL;
 629         }
 630
 631         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
 632                 IWL_ERR(drv, "invalid uCode magic: 0X%x\n",
 633                         le32_to_cpu(ucode->magic));
 634                 return -EINVAL;
 635         }
 636
 637         drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
 638         memcpy(drv->fw.human_readable, ucode->human_readable,
 639                sizeof(drv->fw.human_readable));
 640         build = le32_to_cpu(ucode->build);
 641
 642         if (build)
 643                 sprintf(buildstr, " build %u", build);
 644         else
 645                 buildstr[0] = '\0';
 646
 647         snprintf(drv->fw.fw_version,
 648                  sizeof(drv->fw.fw_version),
 649                  "%u.%u.%u.%u%s %s",
 650                  IWL_UCODE_MAJOR(drv->fw.ucode_ver),
 651                  IWL_UCODE_MINOR(drv->fw.ucode_ver),
 652                  IWL_UCODE_API(drv->fw.ucode_ver),
 653                  IWL_UCODE_SERIAL(drv->fw.ucode_ver),
 654                  buildstr, iwl_reduced_fw_name(drv));
 655
 656         data = ucode->data;
 657
 658         len -= sizeof(*ucode);
 659
 660         while (len >= sizeof(*tlv)) {
 661                 len -= sizeof(*tlv);
 662                 tlv = (void *)data;
 663
 664                 tlv_len = le32_to_cpu(tlv->length);
 665                 tlv_type = le32_to_cpu(tlv->type);
 666                 tlv_data = tlv->data;
 667
 668                 if (len < tlv_len) {
 669                         IWL_ERR(drv, "invalid TLV len: %zd/%u\n",
 670                                 len, tlv_len);
 671                         return -EINVAL;
 672                 }
 673                 len -= ALIGN(tlv_len, 4);
 674                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
 675
 676                 switch (tlv_type) {
 677                 case IWL_UCODE_TLV_INST:
 678                         set_sec_data(pieces, IWL_UCODE_REGULAR,
 679                                      IWL_UCODE_SECTION_INST, tlv_data);
 680                         set_sec_size(pieces, IWL_UCODE_REGULAR,
 681                                      IWL_UCODE_SECTION_INST, tlv_len);
 682                         set_sec_offset(pieces, IWL_UCODE_REGULAR,
 683                                        IWL_UCODE_SECTION_INST,
 684                                        IWLAGN_RTC_INST_LOWER_BOUND);
 685                         break;
 686                 case IWL_UCODE_TLV_DATA:
 687                         set_sec_data(pieces, IWL_UCODE_REGULAR,
 688                                      IWL_UCODE_SECTION_DATA, tlv_data);
 689                         set_sec_size(pieces, IWL_UCODE_REGULAR,
 690                                      IWL_UCODE_SECTION_DATA, tlv_len);
 691                         set_sec_offset(pieces, IWL_UCODE_REGULAR,
 692                                        IWL_UCODE_SECTION_DATA,
 693                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 694                         break;
 695                 case IWL_UCODE_TLV_INIT:
 696                         set_sec_data(pieces, IWL_UCODE_INIT,
 697                                      IWL_UCODE_SECTION_INST, tlv_data);
 698                         set_sec_size(pieces, IWL_UCODE_INIT,
 699                                      IWL_UCODE_SECTION_INST, tlv_len);
 700                         set_sec_offset(pieces, IWL_UCODE_INIT,
 701                                        IWL_UCODE_SECTION_INST,
 702                                        IWLAGN_RTC_INST_LOWER_BOUND);
 703                         break;
 704                 case IWL_UCODE_TLV_INIT_DATA:
 705                         set_sec_data(pieces, IWL_UCODE_INIT,
 706                                      IWL_UCODE_SECTION_DATA, tlv_data);
 707                         set_sec_size(pieces, IWL_UCODE_INIT,
 708                                      IWL_UCODE_SECTION_DATA, tlv_len);
 709                         set_sec_offset(pieces, IWL_UCODE_INIT,
 710                                        IWL_UCODE_SECTION_DATA,
 711                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 712                         break;
 713                 case IWL_UCODE_TLV_BOOT:
 714                         IWL_ERR(drv, "Found unexpected BOOT ucode\n");
 715                         break;
 716                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
 717                         if (tlv_len != sizeof(u32))
 718                                 goto invalid_tlv_len;
 719                         capa->max_probe_length =
 720                                         le32_to_cpup((__le32 *)tlv_data);
 721                         break;
 722                 case IWL_UCODE_TLV_PAN:
 723                         if (tlv_len)
 724                                 goto invalid_tlv_len;
 725                         capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
 726                         break;
 727                 case IWL_UCODE_TLV_FLAGS:
 728                         /* must be at least one u32 */
 729                         if (tlv_len < sizeof(u32))
 730                                 goto invalid_tlv_len;
 731                         /* and a proper number of u32s */
 732                         if (tlv_len % sizeof(u32))
 733                                 goto invalid_tlv_len;
 734                         /*
 735                          * This driver only reads the first u32 as
 736                          * right now no more features are defined,
 737                          * if that changes then either the driver
 738                          * will not work with the new firmware, or
 739                          * it'll not take advantage of new features.
 740                          */
 741                         capa->flags = le32_to_cpup((__le32 *)tlv_data);
 742                         break;
 743                 case IWL_UCODE_TLV_API_CHANGES_SET:
 744                         if (tlv_len != sizeof(struct iwl_ucode_api))
 745                                 goto invalid_tlv_len;
 746                         iwl_set_ucode_api_flags(drv, tlv_data, capa);
 747                         break;
 748                 case IWL_UCODE_TLV_ENABLED_CAPABILITIES:
 749                         if (tlv_len != sizeof(struct iwl_ucode_capa))
 750                                 goto invalid_tlv_len;
 751                         iwl_set_ucode_capabilities(drv, tlv_data, capa);
 752                         break;
 753                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
 754                         if (tlv_len != sizeof(u32))
 755                                 goto invalid_tlv_len;
 756                         pieces->init_evtlog_ptr =
 757                                         le32_to_cpup((__le32 *)tlv_data);
 758                         break;
 759                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
 760                         if (tlv_len != sizeof(u32))
 761                                 goto invalid_tlv_len;
 762                         pieces->init_evtlog_size =
 763                                         le32_to_cpup((__le32 *)tlv_data);
 764                         break;
 765                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
 766                         if (tlv_len != sizeof(u32))
 767                                 goto invalid_tlv_len;
 768                         pieces->init_errlog_ptr =
 769                                         le32_to_cpup((__le32 *)tlv_data);
 770                         break;
 771                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
 772                         if (tlv_len != sizeof(u32))
 773                                 goto invalid_tlv_len;
 774                         pieces->inst_evtlog_ptr =
 775                                         le32_to_cpup((__le32 *)tlv_data);
 776                         break;
 777                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
 778                         if (tlv_len != sizeof(u32))
 779                                 goto invalid_tlv_len;
 780                         pieces->inst_evtlog_size =
 781                                         le32_to_cpup((__le32 *)tlv_data);
 782                         break;
 783                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
 784                         if (tlv_len != sizeof(u32))
 785                                 goto invalid_tlv_len;
 786                         pieces->inst_errlog_ptr =
 787                                         le32_to_cpup((__le32 *)tlv_data);
 788                         break;
 789                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
 790                         if (tlv_len)
 791                                 goto invalid_tlv_len;
 792                         drv->fw.enhance_sensitivity_table = true;
 793                         break;
 794                 case IWL_UCODE_TLV_WOWLAN_INST:
 795                         set_sec_data(pieces, IWL_UCODE_WOWLAN,
 796                                      IWL_UCODE_SECTION_INST, tlv_data);
 797                         set_sec_size(pieces, IWL_UCODE_WOWLAN,
 798                                      IWL_UCODE_SECTION_INST, tlv_len);
 799                         set_sec_offset(pieces, IWL_UCODE_WOWLAN,
 800                                        IWL_UCODE_SECTION_INST,
 801                                        IWLAGN_RTC_INST_LOWER_BOUND);
 802                         break;
 803                 case IWL_UCODE_TLV_WOWLAN_DATA:
 804                         set_sec_data(pieces, IWL_UCODE_WOWLAN,
 805                                      IWL_UCODE_SECTION_DATA, tlv_data);
 806                         set_sec_size(pieces, IWL_UCODE_WOWLAN,
 807                                      IWL_UCODE_SECTION_DATA, tlv_len);
 808                         set_sec_offset(pieces, IWL_UCODE_WOWLAN,
 809                                        IWL_UCODE_SECTION_DATA,
 810                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 811                         break;
 812                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
 813                         if (tlv_len != sizeof(u32))
 814                                 goto invalid_tlv_len;
 815                         capa->standard_phy_calibration_size =
 816                                         le32_to_cpup((__le32 *)tlv_data);
 817                         break;
 818                 case IWL_UCODE_TLV_SEC_RT:
 819                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
 820                                             tlv_len);
 821                         drv->fw.type = IWL_FW_MVM;
 822                         break;
 823                 case IWL_UCODE_TLV_SEC_INIT:
 824                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
 825                                             tlv_len);
 826                         drv->fw.type = IWL_FW_MVM;
 827                         break;
 828                 case IWL_UCODE_TLV_SEC_WOWLAN:
 829                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
 830                                             tlv_len);
 831                         drv->fw.type = IWL_FW_MVM;
 832                         break;
 833                 case IWL_UCODE_TLV_DEF_CALIB:
 834                         if (tlv_len != sizeof(struct iwl_tlv_calib_data))
 835                                 goto invalid_tlv_len;
 836                         if (iwl_set_default_calib(drv, tlv_data))
 837                                 goto tlv_error;
 838                         break;
 839                 case IWL_UCODE_TLV_PHY_SKU:
 840                         if (tlv_len != sizeof(u32))
 841                                 goto invalid_tlv_len;
 842                         drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data);
 843                         drv->fw.valid_tx_ant = (drv->fw.phy_config &
 844                                                 FW_PHY_CFG_TX_CHAIN) >>
 845                                                 FW_PHY_CFG_TX_CHAIN_POS;
 846                         drv->fw.valid_rx_ant = (drv->fw.phy_config &
 847                                                 FW_PHY_CFG_RX_CHAIN) >>
 848                                                 FW_PHY_CFG_RX_CHAIN_POS;
 849                         break;
 850                 case IWL_UCODE_TLV_SECURE_SEC_RT:
 851                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
 852                                             tlv_len);
 853                         drv->fw.type = IWL_FW_MVM;
 854                         break;
 855                 case IWL_UCODE_TLV_SECURE_SEC_INIT:
 856                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
 857                                             tlv_len);
 858                         drv->fw.type = IWL_FW_MVM;
 859                         break;
 860                 case IWL_UCODE_TLV_SECURE_SEC_WOWLAN:
 861                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
 862                                             tlv_len);
 863                         drv->fw.type = IWL_FW_MVM;
 864                         break;
 865                 case IWL_UCODE_TLV_NUM_OF_CPU:
 866                         if (tlv_len != sizeof(u32))
 867                                 goto invalid_tlv_len;
 868                         num_of_cpus =
 869                                 le32_to_cpup((__le32 *)tlv_data);
 870
 871                         if (num_of_cpus == 2) {
 872                                 drv->fw.img[IWL_UCODE_REGULAR].is_dual_cpus =
 873                                         true;
 874                                 drv->fw.img[IWL_UCODE_INIT].is_dual_cpus =
 875                                         true;
 876                                 drv->fw.img[IWL_UCODE_WOWLAN].is_dual_cpus =
 877                                         true;
 878                         } else if ((num_of_cpus > 2) || (num_of_cpus < 1)) {
 879                                 IWL_ERR(drv, "Driver support upto 2 CPUs\n");
 880                                 return -EINVAL;
 881                         }
 882                         break;
 883                 case IWL_UCODE_TLV_CSCHEME:
 884                         if (iwl_store_cscheme(&drv->fw, tlv_data, tlv_len))
 885                                 goto invalid_tlv_len;
 886                         break;
 887                 case IWL_UCODE_TLV_N_SCAN_CHANNELS:
 888                         if (tlv_len != sizeof(u32))
 889                                 goto invalid_tlv_len;
 890                         capa->n_scan_channels =
 891                                 le32_to_cpup((__le32 *)tlv_data);
 892                         break;
 893                 case IWL_UCODE_TLV_FW_VERSION: {
 894                         __le32 *ptr = (void *)tlv_data;
 895                         u32 major, minor;
 896                         u8 local_comp;
 897
 898                         if (tlv_len != sizeof(u32) * 3)
 899                                 goto invalid_tlv_len;
 900
 901                         major = le32_to_cpup(ptr++);
 902                         minor = le32_to_cpup(ptr++);
 903                         local_comp = le32_to_cpup(ptr);
 904
 905                         if (major >= 35)
 906                                 snprintf(drv->fw.fw_version,
 907                                          sizeof(drv->fw.fw_version),
 908                                         "%u.%08x.%u %s", major, minor,
 909                                         local_comp, iwl_reduced_fw_name(drv));
 910                         else
 911                                 snprintf(drv->fw.fw_version,
 912                                          sizeof(drv->fw.fw_version),
 913                                         "%u.%u.%u %s", major, minor,
 914                                         local_comp, iwl_reduced_fw_name(drv));
 915                         break;
 916                         }
 917                 case IWL_UCODE_TLV_FW_DBG_DEST: {
 918                         struct iwl_fw_dbg_dest_tlv *dest = NULL;
 919                         struct iwl_fw_dbg_dest_tlv_v1 *dest_v1 = NULL;
 920                         u8 mon_mode;
 921
 922                         pieces->dbg_dest_ver = (u8 *)tlv_data;
 923                         if (*pieces->dbg_dest_ver == 1) {
 924                                 dest = (void *)tlv_data;
 925                         } else if (*pieces->dbg_dest_ver == 0) {
 926                                 dest_v1 = (void *)tlv_data;
 927                         } else {
 928                                 IWL_ERR(drv,
 929                                         "The version is %d, and it is invalid\n",
 930                                         *pieces->dbg_dest_ver);
 931                                 break;
 932                         }
 933
 934                         if (pieces->dbg_dest_tlv_init) {
 935                                 IWL_ERR(drv,
 936                                         "dbg destination ignored, already exists\n");
 937                                 break;
 938                         }
 939
 940                         pieces->dbg_dest_tlv_init = true;
 941
 942                         if (dest_v1) {
 943                                 pieces->dbg_dest_tlv_v1 = dest_v1;
 944                                 mon_mode = dest_v1->monitor_mode;
 945                         } else {
 946                                 pieces->dbg_dest_tlv = dest;
 947                                 mon_mode = dest->monitor_mode;
 948                         }
 949
 950                         IWL_INFO(drv, "Found debug destination: %s\n",
 951                                  get_fw_dbg_mode_string(mon_mode));
 952
 953                         drv->fw.dbg.n_dest_reg = (dest_v1) ?
 954                                 tlv_len -
 955                                 offsetof(struct iwl_fw_dbg_dest_tlv_v1,
 956                                          reg_ops) :
 957                                 tlv_len -
 958                                 offsetof(struct iwl_fw_dbg_dest_tlv,
 959                                          reg_ops);
 960
 961                         drv->fw.dbg.n_dest_reg /=
 962                                 sizeof(drv->fw.dbg.dest_tlv->reg_ops[0]);
 963
 964                         break;
 965                         }
 966                 case IWL_UCODE_TLV_FW_DBG_CONF: {
 967                         struct iwl_fw_dbg_conf_tlv *conf = (void *)tlv_data;
 968
 969                         if (!pieces->dbg_dest_tlv_init) {
 970                                 IWL_ERR(drv,
 971                                         "Ignore dbg config %d - no destination configured\n",
 972                                         conf->id);
 973                                 break;
 974                         }
 975
 976                         if (conf->id >= ARRAY_SIZE(drv->fw.dbg.conf_tlv)) {
 977                                 IWL_ERR(drv,
 978                                         "Skip unknown configuration: %d\n",
 979                                         conf->id);
 980                                 break;
 981                         }
 982
 983                         if (pieces->dbg_conf_tlv[conf->id]) {
 984                                 IWL_ERR(drv,
 985                                         "Ignore duplicate dbg config %d\n",
 986                                         conf->id);
 987                                 break;
 988                         }
 989
 990                         if (conf->usniffer)
 991                                 usniffer_req = true;
 992
 993                         IWL_INFO(drv, "Found debug configuration: %d\n",
 994                                  conf->id);
 995
 996                         pieces->dbg_conf_tlv[conf->id] = conf;
 997                         pieces->dbg_conf_tlv_len[conf->id] = tlv_len;
 998                         break;
 999                         }
1000                 case IWL_UCODE_TLV_FW_DBG_TRIGGER: {
1001                         struct iwl_fw_dbg_trigger_tlv *trigger =
1002                                 (void *)tlv_data;
1003                         u32 trigger_id = le32_to_cpu(trigger->id);
1004
1005                         if (trigger_id >= ARRAY_SIZE(drv->fw.dbg.trigger_tlv)) {
1006                                 IWL_ERR(drv,
1007                                         "Skip unknown trigger: %u\n",
1008                                         trigger->id);
1009                                 break;
1010                         }
1011
1012                         if (pieces->dbg_trigger_tlv[trigger_id]) {
1013                                 IWL_ERR(drv,
1014                                         "Ignore duplicate dbg trigger %u\n",
1015                                         trigger->id);
1016                                 break;
1017                         }
1018
1019                         IWL_INFO(drv, "Found debug trigger: %u\n", trigger->id);
1020
1021                         pieces->dbg_trigger_tlv[trigger_id] = trigger;
1022                         pieces->dbg_trigger_tlv_len[trigger_id] = tlv_len;
1023                         break;
1024                         }
1025                 case IWL_UCODE_TLV_FW_DBG_DUMP_LST: {
1026                         if (tlv_len != sizeof(u32)) {
1027                                 IWL_ERR(drv,
1028                                         "dbg lst mask size incorrect, skip\n");
1029                                 break;
1030                         }
1031
1032                         drv->fw.dbg.dump_mask =
1033                                 le32_to_cpup((__le32 *)tlv_data);
1034                         break;
1035                         }
1036                 case IWL_UCODE_TLV_SEC_RT_USNIFFER:
1037                         *usniffer_images = true;
1038                         iwl_store_ucode_sec(pieces, tlv_data,
1039                                             IWL_UCODE_REGULAR_USNIFFER,
1040                                             tlv_len);
1041                         break;
1042                 case IWL_UCODE_TLV_PAGING:
1043                         if (tlv_len != sizeof(u32))
1044                                 goto invalid_tlv_len;
1045                         paging_mem_size = le32_to_cpup((__le32 *)tlv_data);
1046
1047                         IWL_DEBUG_FW(drv,
1048                                      "Paging: paging enabled (size = %u bytes)\n",
1049                                      paging_mem_size);
1050
1051                         if (paging_mem_size > MAX_PAGING_IMAGE_SIZE) {
1052                                 IWL_ERR(drv,
1053                                         "Paging: driver supports up to %lu bytes for paging image\n",
1054                                         MAX_PAGING_IMAGE_SIZE);
1055                                 return -EINVAL;
1056                         }
1057
1058                         if (paging_mem_size & (FW_PAGING_SIZE - 1)) {
1059                                 IWL_ERR(drv,
1060                                         "Paging: image isn't multiple %lu\n",
1061                                         FW_PAGING_SIZE);
1062                                 return -EINVAL;
1063                         }
1064
1065                         drv->fw.img[IWL_UCODE_REGULAR].paging_mem_size =
1066                                 paging_mem_size;
1067                         usniffer_img = IWL_UCODE_REGULAR_USNIFFER;
1068                         drv->fw.img[usniffer_img].paging_mem_size =
1069                                 paging_mem_size;
1070                         break;
1071                 case IWL_UCODE_TLV_FW_GSCAN_CAPA:
1072                         /* ignored */
1073                         break;
1074                 case IWL_UCODE_TLV_FW_MEM_SEG: {
1075                         struct iwl_fw_dbg_mem_seg_tlv *dbg_mem =
1076                                 (void *)tlv_data;
1077                         size_t size;
1078                         struct iwl_fw_dbg_mem_seg_tlv *n;
1079
1080                         if (tlv_len != (sizeof(*dbg_mem)))
1081                                 goto invalid_tlv_len;
1082
1083                         IWL_DEBUG_INFO(drv, "Found debug memory segment: %u\n",
1084                                        dbg_mem->data_type);
1085
1086                         size = sizeof(*pieces->dbg_mem_tlv) *
1087                                (pieces->n_mem_tlv + 1);
1088                         n = krealloc(pieces->dbg_mem_tlv, size, GFP_KERNEL);
1089                         if (!n)
1090                                 return -ENOMEM;
1091                         pieces->dbg_mem_tlv = n;
1092                         pieces->dbg_mem_tlv[pieces->n_mem_tlv] = *dbg_mem;
1093                         pieces->n_mem_tlv++;
1094                         break;
1095                         }
1096                 case IWL_UCODE_TLV_IML: {
1097                         drv->fw.iml_len = tlv_len;
1098                         drv->fw.iml = kmemdup(tlv_data, tlv_len, GFP_KERNEL);
1099                         if (!drv->fw.iml)
1100                                 return -ENOMEM;
1101                         break;
1102                         }
1103                 case IWL_UCODE_TLV_FW_RECOVERY_INFO: {
1104                         struct {
1105                                 __le32 buf_addr;
1106                                 __le32 buf_size;
1107                         } *recov_info = (void *)tlv_data;
1108
1109                         if (tlv_len != sizeof(*recov_info))
1110                                 goto invalid_tlv_len;
1111                         capa->error_log_addr =
1112                                 le32_to_cpu(recov_info->buf_addr);
1113                         capa->error_log_size =
1114                                 le32_to_cpu(recov_info->buf_size);
1115                         }
1116                         break;
1117                 case IWL_UCODE_TLV_FW_FSEQ_VERSION: {
1118                         struct {
1119                                 u8 version[32];
1120                                 u8 sha1[20];
1121                         } *fseq_ver = (void *)tlv_data;
1122
1123                         if (tlv_len != sizeof(*fseq_ver))
1124                                 goto invalid_tlv_len;
1125                         IWL_INFO(drv, "TLV_FW_FSEQ_VERSION: %s\n",
1126                                  fseq_ver->version);
1127                         }
1128                         break;
1129                 case IWL_UCODE_TLV_UMAC_DEBUG_ADDRS: {
1130                         struct iwl_umac_debug_addrs *dbg_ptrs =
1131                                 (void *)tlv_data;
1132
1133                         if (tlv_len != sizeof(*dbg_ptrs))
1134                                 goto invalid_tlv_len;
1135                         if (drv->trans->trans_cfg->device_family <
1136                             IWL_DEVICE_FAMILY_22000)
1137                                 break;
1138                         drv->trans->dbg.umac_error_event_table =
1139                                 le32_to_cpu(dbg_ptrs->error_info_addr) &
1140                                 ~FW_ADDR_CACHE_CONTROL;
1141                         drv->trans->dbg.error_event_table_tlv_status |=
1142                                 IWL_ERROR_EVENT_TABLE_UMAC;
1143                         break;
1144                         }
1145                 case IWL_UCODE_TLV_LMAC_DEBUG_ADDRS: {
1146                         struct iwl_lmac_debug_addrs *dbg_ptrs =
1147                                 (void *)tlv_data;
1148
1149                         if (tlv_len != sizeof(*dbg_ptrs))
1150                                 goto invalid_tlv_len;
1151                         if (drv->trans->trans_cfg->device_family <
1152                             IWL_DEVICE_FAMILY_22000)
1153                                 break;
1154                         drv->trans->dbg.lmac_error_event_table[0] =
1155                                 le32_to_cpu(dbg_ptrs->error_event_table_ptr) &
1156                                 ~FW_ADDR_CACHE_CONTROL;
1157                         drv->trans->dbg.error_event_table_tlv_status |=
1158                                 IWL_ERROR_EVENT_TABLE_LMAC1;
1159                         break;
1160                         }
1161                 case IWL_UCODE_TLV_TYPE_DEBUG_INFO:
1162                 case IWL_UCODE_TLV_TYPE_BUFFER_ALLOCATION:
1163                 case IWL_UCODE_TLV_TYPE_HCMD:
1164                 case IWL_UCODE_TLV_TYPE_REGIONS:
1165                 case IWL_UCODE_TLV_TYPE_TRIGGERS:
1166                         if (iwlwifi_mod_params.enable_ini)
1167                                 iwl_dbg_tlv_alloc(drv->trans, tlv, false);
1168                         break;
1169                 case IWL_UCODE_TLV_CMD_VERSIONS:
1170                         if (tlv_len % sizeof(struct iwl_fw_cmd_version)) {
1171                                 IWL_ERR(drv,
1172                                         "Invalid length for command versions: %u\n",
1173                                         tlv_len);
1174                                 tlv_len /= sizeof(struct iwl_fw_cmd_version);
1175                                 tlv_len *= sizeof(struct iwl_fw_cmd_version);
1176                         }
1177                         if (WARN_ON(capa->cmd_versions))
1178                                 return -EINVAL;
1179                         capa->cmd_versions = kmemdup(tlv_data, tlv_len,
1180                                                      GFP_KERNEL);
1181                         if (!capa->cmd_versions)
1182                                 return -ENOMEM;
1183                         capa->n_cmd_versions =
1184                                 tlv_len / sizeof(struct iwl_fw_cmd_version);
1185                         break;
1186                 default:
1187                         IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
1188                         break;
1189                 }
1190         }
1191
1192         if (!fw_has_capa(capa, IWL_UCODE_TLV_CAPA_USNIFFER_UNIFIED) &&
1193             usniffer_req && !*usniffer_images) {
1194                 IWL_ERR(drv,
1195                         "user selected to work with usniffer but usniffer image isn't available in ucode package\n");
1196                 return -EINVAL;
1197         }
1198
1199         if (len) {
1200                 IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
1201                 iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len);
1202                 return -EINVAL;
1203         }
1204
1205         return 0;
1206
1207  invalid_tlv_len:
1208         IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
1209  tlv_error:
1210         iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);
1211
1212         return -EINVAL;
1213 }
1214
1215 static int iwl_alloc_ucode(struct iwl_drv *drv,
1216                            struct iwl_firmware_pieces *pieces,
1217                            enum iwl_ucode_type type)
1218 {
1219         int i;
1220         struct fw_desc *sec;
1221
1222         sec = kcalloc(pieces->img[type].sec_counter, sizeof(*sec), GFP_KERNEL);
1223         if (!sec)
1224                 return -ENOMEM;
1225         drv->fw.img[type].sec = sec;
1226         drv->fw.img[type].num_sec = pieces->img[type].sec_counter;
1227
1228         for (i = 0; i < pieces->img[type].sec_counter; i++)
1229                 if (iwl_alloc_fw_desc(drv, &sec[i], get_sec(pieces, type, i)))
1230                         return -ENOMEM;
1231
1232         return 0;
1233 }
1234
1235 static int validate_sec_sizes(struct iwl_drv *drv,
1236                               struct iwl_firmware_pieces *pieces,
1237                               const struct iwl_cfg *cfg)
1238 {
1239         IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %zd\n",
1240                 get_sec_size(pieces, IWL_UCODE_REGULAR,
1241                              IWL_UCODE_SECTION_INST));
1242         IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %zd\n",
1243                 get_sec_size(pieces, IWL_UCODE_REGULAR,
1244                              IWL_UCODE_SECTION_DATA));
1245         IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %zd\n",
1246                 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST));
1247         IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %zd\n",
1248                 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA));
1249
1250         /* Verify that uCode images will fit in card's SRAM. */
1251         if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
1252             cfg->max_inst_size) {
1253                 IWL_ERR(drv, "uCode instr len %zd too large to fit in\n",
1254                         get_sec_size(pieces, IWL_UCODE_REGULAR,
1255                                      IWL_UCODE_SECTION_INST));
1256                 return -1;
1257         }
1258
1259         if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
1260             cfg->max_data_size) {
1261                 IWL_ERR(drv, "uCode data len %zd too large to fit in\n",
1262                         get_sec_size(pieces, IWL_UCODE_REGULAR,
1263                                      IWL_UCODE_SECTION_DATA));
1264                 return -1;
1265         }
1266
1267         if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) >
1268              cfg->max_inst_size) {
1269                 IWL_ERR(drv, "uCode init instr len %zd too large to fit in\n",
1270                         get_sec_size(pieces, IWL_UCODE_INIT,
1271                                      IWL_UCODE_SECTION_INST));
1272                 return -1;
1273         }
1274
1275         if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA) >
1276             cfg->max_data_size) {
1277                 IWL_ERR(drv, "uCode init data len %zd too large to fit in\n",
1278                         get_sec_size(pieces, IWL_UCODE_REGULAR,
1279                                      IWL_UCODE_SECTION_DATA));
1280                 return -1;
1281         }
1282         return 0;
1283 }
1284
1285 static struct iwl_op_mode *
1286 _iwl_op_mode_start(struct iwl_drv *drv, struct iwlwifi_opmode_table *op)
1287 {
1288         const struct iwl_op_mode_ops *ops = op->ops;
1289         struct dentry *dbgfs_dir = NULL;
1290         struct iwl_op_mode *op_mode = NULL;
1291
1292 #ifdef CONFIG_IWLWIFI_DEBUGFS
1293         drv->dbgfs_op_mode = debugfs_create_dir(op->name,
1294                                                 drv->dbgfs_drv);
1295         dbgfs_dir = drv->dbgfs_op_mode;
1296 #endif
1297
1298         op_mode = ops->start(drv->trans, drv->trans->cfg, &drv->fw, dbgfs_dir);
1299
1300 #ifdef CONFIG_IWLWIFI_DEBUGFS
1301         if (!op_mode) {
1302                 debugfs_remove_recursive(drv->dbgfs_op_mode);
1303                 drv->dbgfs_op_mode = NULL;
1304         }
1305 #endif
1306
1307         return op_mode;
1308 }
1309
1310 static void _iwl_op_mode_stop(struct iwl_drv *drv)
1311 {
1312         /* op_mode can be NULL if its start failed */
1313         if (drv->op_mode) {
1314                 iwl_op_mode_stop(drv->op_mode);
1315                 drv->op_mode = NULL;
1316
1317 #ifdef CONFIG_IWLWIFI_DEBUGFS
1318                 debugfs_remove_recursive(drv->dbgfs_op_mode);
1319                 drv->dbgfs_op_mode = NULL;
1320 #endif
1321         }
1322 }
1323
1324 /**
1325  * iwl_req_fw_callback - callback when firmware was loaded
1326  *
1327  * If loaded successfully, copies the firmware into buffers
1328  * for the card to fetch (via DMA).
1329  */
1330 static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
1331 {
1332         struct iwl_drv *drv = context;
1333         struct iwl_fw *fw = &drv->fw;
1334         struct iwl_ucode_header *ucode;
1335         struct iwlwifi_opmode_table *op;
1336         int err;
1337         struct iwl_firmware_pieces *pieces;
1338         const unsigned int api_max = drv->trans->cfg->ucode_api_max;
1339         const unsigned int api_min = drv->trans->cfg->ucode_api_min;
1340         size_t trigger_tlv_sz[FW_DBG_TRIGGER_MAX];
1341         u32 api_ver;
1342         int i;
1343         bool load_module = false;
1344         bool usniffer_images = false;
1345
1346         fw->ucode_capa.max_probe_length = IWL_DEFAULT_MAX_PROBE_LENGTH;
1347         fw->ucode_capa.standard_phy_calibration_size =
1348                         IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1349         fw->ucode_capa.n_scan_channels = IWL_DEFAULT_SCAN_CHANNELS;
1350         /* dump all fw memory areas by default */
1351         fw->dbg.dump_mask = 0xffffffff;
1352
1353         pieces = kzalloc(sizeof(*pieces), GFP_KERNEL);
1354         if (!pieces)
1355                 goto out_free_fw;
1356
1357         if (!ucode_raw)
1358                 goto try_again;
1359
1360         IWL_DEBUG_FW_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
1361                           drv->firmware_name, ucode_raw->size);
1362
1363         /* Make sure that we got at least the API version number */
1364         if (ucode_raw->size < 4) {
1365                 IWL_ERR(drv, "File size way too small!\n");
1366                 goto try_again;
1367         }
1368
1369         /* Data from ucode file:  header followed by uCode images */
1370         ucode = (struct iwl_ucode_header *)ucode_raw->data;
1371
1372         if (ucode->ver)
1373                 err = iwl_parse_v1_v2_firmware(drv, ucode_raw, pieces);
1374         else
1375                 err = iwl_parse_tlv_firmware(drv, ucode_raw, pieces,
1376                                              &fw->ucode_capa, &usniffer_images);
1377
1378         if (err)
1379                 goto try_again;
1380
1381         if (fw_has_api(&drv->fw.ucode_capa, IWL_UCODE_TLV_API_NEW_VERSION))
1382                 api_ver = drv->fw.ucode_ver;
1383         else
1384                 api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
1385
1386         /*
1387          * api_ver should match the api version forming part of the
1388          * firmware filename ... but we don't check for that and only rely
1389          * on the API version read from firmware header from here on forward
1390          */
1391         if (api_ver < api_min || api_ver > api_max) {
1392                 IWL_ERR(drv,
1393                         "Driver unable to support your firmware API. "
1394                         "Driver supports v%u, firmware is v%u.\n",
1395                         api_max, api_ver);
1396                 goto try_again;
1397         }
1398
1399         /*
1400          * In mvm uCode there is no difference between data and instructions
1401          * sections.
1402          */
1403         if (fw->type == IWL_FW_DVM && validate_sec_sizes(drv, pieces,
1404                                                          drv->trans->cfg))
1405                 goto try_again;
1406
1407         /* Allocate ucode buffers for card's bus-master loading ... */
1408
1409         /* Runtime instructions and 2 copies of data:
1410          * 1) unmodified from disk
1411          * 2) backup cache for save/restore during power-downs
1412          */
1413         for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
1414                 if (iwl_alloc_ucode(drv, pieces, i))
1415                         goto out_free_fw;
1416
1417         if (pieces->dbg_dest_tlv_init) {
1418                 size_t dbg_dest_size = sizeof(*drv->fw.dbg.dest_tlv) +
1419                         sizeof(drv->fw.dbg.dest_tlv->reg_ops[0]) *
1420                         drv->fw.dbg.n_dest_reg;
1421
1422                 drv->fw.dbg.dest_tlv = kmalloc(dbg_dest_size, GFP_KERNEL);
1423
1424                 if (!drv->fw.dbg.dest_tlv)
1425                         goto out_free_fw;
1426
1427                 if (*pieces->dbg_dest_ver == 0) {
1428                         memcpy(drv->fw.dbg.dest_tlv, pieces->dbg_dest_tlv_v1,
1429                                dbg_dest_size);
1430                 } else {
1431                         struct iwl_fw_dbg_dest_tlv_v1 *dest_tlv =
1432                                 drv->fw.dbg.dest_tlv;
1433
1434                         dest_tlv->version = pieces->dbg_dest_tlv->version;
1435                         dest_tlv->monitor_mode =
1436                                 pieces->dbg_dest_tlv->monitor_mode;
1437                         dest_tlv->size_power =
1438                                 pieces->dbg_dest_tlv->size_power;
1439                         dest_tlv->wrap_count =
1440                                 pieces->dbg_dest_tlv->wrap_count;
1441                         dest_tlv->write_ptr_reg =
1442                                 pieces->dbg_dest_tlv->write_ptr_reg;
1443                         dest_tlv->base_shift =
1444                                 pieces->dbg_dest_tlv->base_shift;
1445                         memcpy(dest_tlv->reg_ops,
1446                                pieces->dbg_dest_tlv->reg_ops,
1447                                sizeof(drv->fw.dbg.dest_tlv->reg_ops[0]) *
1448                                drv->fw.dbg.n_dest_reg);
1449
1450                         /* In version 1 of the destination tlv, which is
1451                          * relevant for internal buffer exclusively,
1452                          * the base address is part of given with the length
1453                          * of the buffer, and the size shift is give instead of
1454                          * end shift. We now store these values in base_reg,
1455                          * and end shift, and when dumping the data we'll
1456                          * manipulate it for extracting both the length and
1457                          * base address */
1458                         dest_tlv->base_reg = pieces->dbg_dest_tlv->cfg_reg;
1459                         dest_tlv->end_shift =
1460                                 pieces->dbg_dest_tlv->size_shift;
1461                 }
1462         }
1463
1464         for (i = 0; i < ARRAY_SIZE(drv->fw.dbg.conf_tlv); i++) {
1465                 if (pieces->dbg_conf_tlv[i]) {
1466                         drv->fw.dbg.conf_tlv[i] =
1467                                 kmemdup(pieces->dbg_conf_tlv[i],
1468                                         pieces->dbg_conf_tlv_len[i],
1469                                         GFP_KERNEL);
1470                         if (!pieces->dbg_conf_tlv[i])
1471                                 goto out_free_fw;
1472                 }
1473         }
1474
1475         memset(&trigger_tlv_sz, 0xff, sizeof(trigger_tlv_sz));
1476
1477         trigger_tlv_sz[FW_DBG_TRIGGER_MISSED_BEACONS] =
1478                 sizeof(struct iwl_fw_dbg_trigger_missed_bcon);
1479         trigger_tlv_sz[FW_DBG_TRIGGER_CHANNEL_SWITCH] = 0;
1480         trigger_tlv_sz[FW_DBG_TRIGGER_FW_NOTIF] =
1481                 sizeof(struct iwl_fw_dbg_trigger_cmd);
1482         trigger_tlv_sz[FW_DBG_TRIGGER_MLME] =
1483                 sizeof(struct iwl_fw_dbg_trigger_mlme);
1484         trigger_tlv_sz[FW_DBG_TRIGGER_STATS] =
1485                 sizeof(struct iwl_fw_dbg_trigger_stats);
1486         trigger_tlv_sz[FW_DBG_TRIGGER_RSSI] =
1487                 sizeof(struct iwl_fw_dbg_trigger_low_rssi);
1488         trigger_tlv_sz[FW_DBG_TRIGGER_TXQ_TIMERS] =
1489                 sizeof(struct iwl_fw_dbg_trigger_txq_timer);
1490         trigger_tlv_sz[FW_DBG_TRIGGER_TIME_EVENT] =
1491                 sizeof(struct iwl_fw_dbg_trigger_time_event);
1492         trigger_tlv_sz[FW_DBG_TRIGGER_BA] =
1493                 sizeof(struct iwl_fw_dbg_trigger_ba);
1494         trigger_tlv_sz[FW_DBG_TRIGGER_TDLS] =
1495                 sizeof(struct iwl_fw_dbg_trigger_tdls);
1496
1497         for (i = 0; i < ARRAY_SIZE(drv->fw.dbg.trigger_tlv); i++) {
1498                 if (pieces->dbg_trigger_tlv[i]) {
1499                         /*
1500                          * If the trigger isn't long enough, WARN and exit.
1501                          * Someone is trying to debug something and he won't
1502                          * be able to catch the bug he is trying to chase.
1503                          * We'd better be noisy to be sure he knows what's
1504                          * going on.
1505                          */
1506                         if (WARN_ON(pieces->dbg_trigger_tlv_len[i] <
1507                                     (trigger_tlv_sz[i] +
1508                                      sizeof(struct iwl_fw_dbg_trigger_tlv))))
1509                                 goto out_free_fw;
1510                         drv->fw.dbg.trigger_tlv_len[i] =
1511                                 pieces->dbg_trigger_tlv_len[i];
1512                         drv->fw.dbg.trigger_tlv[i] =
1513                                 kmemdup(pieces->dbg_trigger_tlv[i],
1514                                         drv->fw.dbg.trigger_tlv_len[i],
1515                                         GFP_KERNEL);
1516                         if (!drv->fw.dbg.trigger_tlv[i])
1517                                 goto out_free_fw;
1518                 }
1519         }
1520
1521         /* Now that we can no longer fail, copy information */
1522
1523         drv->fw.dbg.mem_tlv = pieces->dbg_mem_tlv;
1524         pieces->dbg_mem_tlv = NULL;
1525         drv->fw.dbg.n_mem_tlv = pieces->n_mem_tlv;
1526
1527         /*
1528          * The (size - 16) / 12 formula is based on the information recorded
1529          * for each event, which is of mode 1 (including timestamp) for all
1530          * new microcodes that include this information.
1531          */
1532         fw->init_evtlog_ptr = pieces->init_evtlog_ptr;
1533         if (pieces->init_evtlog_size)
1534                 fw->init_evtlog_size = (pieces->init_evtlog_size - 16)/12;
1535         else
1536                 fw->init_evtlog_size =
1537                         drv->trans->trans_cfg->base_params->max_event_log_size;
1538         fw->init_errlog_ptr = pieces->init_errlog_ptr;
1539         fw->inst_evtlog_ptr = pieces->inst_evtlog_ptr;
1540         if (pieces->inst_evtlog_size)
1541                 fw->inst_evtlog_size = (pieces->inst_evtlog_size - 16)/12;
1542         else
1543                 fw->inst_evtlog_size =
1544                         drv->trans->trans_cfg->base_params->max_event_log_size;
1545         fw->inst_errlog_ptr = pieces->inst_errlog_ptr;
1546
1547         /*
1548          * figure out the offset of chain noise reset and gain commands
1549          * base on the size of standard phy calibration commands table size
1550          */
1551         if (fw->ucode_capa.standard_phy_calibration_size >
1552             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1553                 fw->ucode_capa.standard_phy_calibration_size =
1554                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1555
1556         /* We have our copies now, allow OS release its copies */
1557         release_firmware(ucode_raw);
1558
1559         mutex_lock(&iwlwifi_opmode_table_mtx);
1560         switch (fw->type) {
1561         case IWL_FW_DVM:
1562                 op = &iwlwifi_opmode_table[DVM_OP_MODE];
1563                 break;
1564         default:
1565                 WARN(1, "Invalid fw type %d\n", fw->type);
1566                 /* fall through */
1567         case IWL_FW_MVM:
1568                 op = &iwlwifi_opmode_table[MVM_OP_MODE];
1569                 break;
1570         }
1571
1572         IWL_INFO(drv, "loaded firmware version %s op_mode %s\n",
1573                  drv->fw.fw_version, op->name);
1574
1575         iwl_dbg_tlv_load_bin(drv->trans->dev, drv->trans);
1576
1577         /* add this device to the list of devices using this op_mode */
1578         list_add_tail(&drv->list, &op->drv);
1579
1580         if (op->ops) {
1581                 drv->op_mode = _iwl_op_mode_start(drv, op);
1582
1583                 if (!drv->op_mode) {
1584                         mutex_unlock(&iwlwifi_opmode_table_mtx);
1585                         goto out_unbind;
1586                 }
1587         } else {
1588                 load_module = true;
1589         }
1590         mutex_unlock(&iwlwifi_opmode_table_mtx);
1591
1592         /*
1593          * Complete the firmware request last so that
1594          * a driver unbind (stop) doesn't run while we
1595          * are doing the start() above.
1596          */
1597         complete(&drv->request_firmware_complete);
1598
1599         /*
1600          * Load the module last so we don't block anything
1601          * else from proceeding if the module fails to load
1602          * or hangs loading.
1603          */
1604         if (load_module) {
1605                 request_module("%s", op->name);
1606 #ifdef CONFIG_IWLWIFI_OPMODE_MODULAR
1607                 if (err)
1608                         IWL_ERR(drv,
1609                                 "failed to load module %s (error %d), is dynamic loading enabled?\n",
1610                                 op->name, err);
1611 #endif
1612         }
1613         goto free;
1614
1615  try_again:
1616         /* try next, if any */
1617         release_firmware(ucode_raw);
1618         if (iwl_request_firmware(drv, false))
1619                 goto out_unbind;
1620         goto free;
1621
1622  out_free_fw:
1623         release_firmware(ucode_raw);
1624  out_unbind:
1625         complete(&drv->request_firmware_complete);
1626         device_release_driver(drv->trans->dev);
1627  free:
1628         if (pieces) {
1629                 for (i = 0; i < ARRAY_SIZE(pieces->img); i++)
1630                         kfree(pieces->img[i].sec);
1631                 kfree(pieces->dbg_mem_tlv);
1632                 kfree(pieces);
1633         }
1634 }
1635
1636 struct iwl_drv *iwl_drv_start(struct iwl_trans *trans)
1637 {
1638         struct iwl_drv *drv;
1639         int ret;
1640
1641         drv = kzalloc(sizeof(*drv), GFP_KERNEL);
1642         if (!drv) {
1643                 ret = -ENOMEM;
1644                 goto err;
1645         }
1646
1647         drv->trans = trans;
1648         drv->dev = trans->dev;
1649
1650         init_completion(&drv->request_firmware_complete);
1651         INIT_LIST_HEAD(&drv->list);
1652
1653 #ifdef CONFIG_IWLWIFI_DEBUGFS
1654         /* Create the device debugfs entries. */
1655         drv->dbgfs_drv = debugfs_create_dir(dev_name(trans->dev),
1656                                             iwl_dbgfs_root);
1657
1658         /* Create transport layer debugfs dir */
1659         drv->trans->dbgfs_dir = debugfs_create_dir("trans", drv->dbgfs_drv);
1660 #endif
1661
1662         drv->trans->dbg.domains_bitmap = IWL_TRANS_FW_DBG_DOMAIN(drv->trans);
1663
1664         ret = iwl_request_firmware(drv, true);
1665         if (ret) {
1666                 IWL_ERR(trans, "Couldn't request the fw\n");
1667                 goto err_fw;
1668         }
1669
1670         return drv;
1671
1672 err_fw:
1673 #ifdef CONFIG_IWLWIFI_DEBUGFS
1674         debugfs_remove_recursive(drv->dbgfs_drv);
1675         iwl_dbg_tlv_free(drv->trans);
1676 #endif
1677         kfree(drv);
1678 err:
1679         return ERR_PTR(ret);
1680 }
1681
1682 void iwl_drv_stop(struct iwl_drv *drv)
1683 {
1684         wait_for_completion(&drv->request_firmware_complete);
1685
1686         _iwl_op_mode_stop(drv);
1687
1688         iwl_dealloc_ucode(drv);
1689
1690         mutex_lock(&iwlwifi_opmode_table_mtx);
1691         /*
1692          * List is empty (this item wasn't added)
1693          * when firmware loading failed -- in that
1694          * case we can't remove it from any list.
1695          */
1696         if (!list_empty(&drv->list))
1697                 list_del(&drv->list);
1698         mutex_unlock(&iwlwifi_opmode_table_mtx);
1699
1700 #ifdef CONFIG_IWLWIFI_DEBUGFS
1701         drv->trans->ops->debugfs_cleanup(drv->trans);
1702
1703         debugfs_remove_recursive(drv->dbgfs_drv);
1704 #endif
1705
1706         iwl_dbg_tlv_free(drv->trans);
1707
1708         kfree(drv);
1709 }
1710
1711
1712 /* shared module parameters */
1713 struct iwl_mod_params iwlwifi_mod_params = {
1714         .fw_restart = true,
1715         .bt_coex_active = true,
1716         .power_level = IWL_POWER_INDEX_1,
1717         .uapsd_disable = IWL_DISABLE_UAPSD_BSS | IWL_DISABLE_UAPSD_P2P_CLIENT,
1718         .enable_ini = true,
1719         /* the rest are 0 by default */
1720 };
1721 IWL_EXPORT_SYMBOL(iwlwifi_mod_params);
1722
1723 int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops)
1724 {
1725         int i;
1726         struct iwl_drv *drv;
1727         struct iwlwifi_opmode_table *op;
1728
1729         mutex_lock(&iwlwifi_opmode_table_mtx);
1730         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1731                 op = &iwlwifi_opmode_table[i];
1732                 if (strcmp(op->name, name))
1733                         continue;
1734                 op->ops = ops;
1735                 /* TODO: need to handle exceptional case */
1736                 list_for_each_entry(drv, &op->drv, list)
1737                         drv->op_mode = _iwl_op_mode_start(drv, op);
1738
1739                 mutex_unlock(&iwlwifi_opmode_table_mtx);
1740                 return 0;
1741         }
1742         mutex_unlock(&iwlwifi_opmode_table_mtx);
1743         return -EIO;
1744 }
1745 IWL_EXPORT_SYMBOL(iwl_opmode_register);
1746
1747 void iwl_opmode_deregister(const char *name)
1748 {
1749         int i;
1750         struct iwl_drv *drv;
1751
1752         mutex_lock(&iwlwifi_opmode_table_mtx);
1753         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1754                 if (strcmp(iwlwifi_opmode_table[i].name, name))
1755                         continue;
1756                 iwlwifi_opmode_table[i].ops = NULL;
1757
1758                 /* call the stop routine for all devices */
1759                 list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list)
1760                         _iwl_op_mode_stop(drv);
1761
1762                 mutex_unlock(&iwlwifi_opmode_table_mtx);
1763                 return;
1764         }
1765         mutex_unlock(&iwlwifi_opmode_table_mtx);
1766 }
1767 IWL_EXPORT_SYMBOL(iwl_opmode_deregister);
1768
1769 static int __init iwl_drv_init(void)
1770 {
1771         int i, err;
1772
1773         mutex_init(&iwlwifi_opmode_table_mtx);
1774
1775         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++)
1776                 INIT_LIST_HEAD(&iwlwifi_opmode_table[i].drv);
1777
1778         pr_info(DRV_DESCRIPTION "\n");
1779         pr_info(DRV_COPYRIGHT "\n");
1780
1781 #ifdef CONFIG_IWLWIFI_DEBUGFS
1782         /* Create the root of iwlwifi debugfs subsystem. */
1783         iwl_dbgfs_root = debugfs_create_dir(DRV_NAME, NULL);
1784 #endif
1785
1786         err = iwl_pci_register_driver();
1787         if (err)
1788                 goto cleanup_debugfs;
1789
1790         return 0;
1791
1792 cleanup_debugfs:
1793 #ifdef CONFIG_IWLWIFI_DEBUGFS
1794         debugfs_remove_recursive(iwl_dbgfs_root);
1795 #endif
1796         return err;
1797 }
1798 module_init(iwl_drv_init);
1799
1800 static void __exit iwl_drv_exit(void)
1801 {
1802         iwl_pci_unregister_driver();
1803
1804 #ifdef CONFIG_IWLWIFI_DEBUGFS
1805         debugfs_remove_recursive(iwl_dbgfs_root);
1806 #endif
1807 }
1808 module_exit(iwl_drv_exit);
1809
1810 #ifdef CONFIG_IWLWIFI_DEBUG
1811 module_param_named(debug, iwlwifi_mod_params.debug_level, uint, 0644);
1812 MODULE_PARM_DESC(debug, "debug output mask");
1813 #endif
1814
1815 module_param_named(swcrypto, iwlwifi_mod_params.swcrypto, int, 0444);
1816 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1817 module_param_named(11n_disable, iwlwifi_mod_params.disable_11n, uint, 0444);
1818 MODULE_PARM_DESC(11n_disable,
1819         "disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX");
1820 module_param_named(amsdu_size, iwlwifi_mod_params.amsdu_size, int, 0444);
1821 MODULE_PARM_DESC(amsdu_size,
1822                  "amsdu size 0: 12K for multi Rx queue devices, 2K for AX210 devices, "
1823                  "4K for other devices 1:4K 2:8K 3:12K 4: 2K (default 0)");
1824 module_param_named(fw_restart, iwlwifi_mod_params.fw_restart, bool, 0444);
1825 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error (default true)");
1826
1827 module_param_named(antenna_coupling, iwlwifi_mod_params.antenna_coupling,
1828                    int, 0444);
1829 MODULE_PARM_DESC(antenna_coupling,
1830                  "specify antenna coupling in dB (default: 0 dB)");
1831
1832 module_param_named(nvm_file, iwlwifi_mod_params.nvm_file, charp, 0444);
1833 MODULE_PARM_DESC(nvm_file, "NVM file name");
1834
1835 module_param_named(uapsd_disable, iwlwifi_mod_params.uapsd_disable, uint, 0644);
1836 MODULE_PARM_DESC(uapsd_disable,
1837                  "disable U-APSD functionality bitmap 1: BSS 2: P2P Client (default: 3)");
1838 module_param_named(enable_ini, iwlwifi_mod_params.enable_ini,
1839                    bool, S_IRUGO | S_IWUSR);
1840 MODULE_PARM_DESC(enable_ini,
1841                  "Enable debug INI TLV FW debug infrastructure (default: true");
1842
1843 /*
1844  * set bt_coex_active to true, uCode will do kill/defer
1845  * every time the priority line is asserted (BT is sending signals on the
1846  * priority line in the PCIx).
1847  * set bt_coex_active to false, uCode will ignore the BT activity and
1848  * perform the normal operation
1849  *
1850  * User might experience transmit issue on some platform due to WiFi/BT
1851  * co-exist problem. The possible behaviors are:
1852  *   Able to scan and finding all the available AP
1853  *   Not able to associate with any AP
1854  * On those platforms, WiFi communication can be restored by set
1855  * "bt_coex_active" module parameter to "false"
1856  *
1857  * default: bt_coex_active = true (BT_COEX_ENABLE)
1858  */
1859 module_param_named(bt_coex_active, iwlwifi_mod_params.bt_coex_active,
1860                    bool, 0444);
1861 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1862
1863 module_param_named(led_mode, iwlwifi_mod_params.led_mode, int, 0444);
1864 MODULE_PARM_DESC(led_mode, "0=system default, "
1865                 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1866
1867 module_param_named(power_save, iwlwifi_mod_params.power_save, bool, 0444);
1868 MODULE_PARM_DESC(power_save,
1869                  "enable WiFi power management (default: disable)");
1870
1871 module_param_named(power_level, iwlwifi_mod_params.power_level, int, 0444);
1872 MODULE_PARM_DESC(power_level,
1873                  "default power save level (range from 1 - 5, default: 1)");
1874
1875 module_param_named(fw_monitor, iwlwifi_mod_params.fw_monitor, bool, 0444);
1876 MODULE_PARM_DESC(fw_monitor,
1877                  "firmware monitor - to debug FW (default: false - needs lots of memory)");
1878
1879 module_param_named(disable_11ac, iwlwifi_mod_params.disable_11ac, bool, 0444);
1880 MODULE_PARM_DESC(disable_11ac, "Disable VHT capabilities (default: false)");
1881
1882 module_param_named(remove_when_gone,
1883                    iwlwifi_mod_params.remove_when_gone, bool,
1884                    0444);
1885 MODULE_PARM_DESC(remove_when_gone,
1886                  "Remove dev from PCIe bus if it is deemed inaccessible (default: false)");
1887
1888 module_param_named(disable_11ax, iwlwifi_mod_params.disable_11ax, bool,
1889                    S_IRUGO);
1890 MODULE_PARM_DESC(disable_11ax, "Disable HE capabilities (default: false)");