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 /*(DEBLOBBED)*/\n");
 250                 return -ENOENT;
 251         }
 252
 253         snprintf(drv->firmware_name, sizeof(drv->firmware_name), "/*(DEBLOBBED)*/",
 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 reject_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 int iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
 497                                     const struct firmware *ucode_raw,
 498                                     struct iwl_firmware_pieces *pieces)
 499 {
 500         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
 501         u32 api_ver, hdr_size, build;
 502         char buildstr[25];
 503         const u8 *src;
 504
 505         drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
 506         api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
 507
 508         switch (api_ver) {
 509         default:
 510                 hdr_size = 28;
 511                 if (ucode_raw->size < hdr_size) {
 512                         IWL_ERR(drv, "File size too small!\n");
 513                         return -EINVAL;
 514                 }
 515                 build = le32_to_cpu(ucode->u.v2.build);
 516                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 517                              le32_to_cpu(ucode->u.v2.inst_size));
 518                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 519                              le32_to_cpu(ucode->u.v2.data_size));
 520                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 521                              le32_to_cpu(ucode->u.v2.init_size));
 522                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 523                              le32_to_cpu(ucode->u.v2.init_data_size));
 524                 src = ucode->u.v2.data;
 525                 break;
 526         case 0:
 527         case 1:
 528         case 2:
 529                 hdr_size = 24;
 530                 if (ucode_raw->size < hdr_size) {
 531                         IWL_ERR(drv, "File size too small!\n");
 532                         return -EINVAL;
 533                 }
 534                 build = 0;
 535                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 536                              le32_to_cpu(ucode->u.v1.inst_size));
 537                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 538                              le32_to_cpu(ucode->u.v1.data_size));
 539                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 540                              le32_to_cpu(ucode->u.v1.init_size));
 541                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 542                              le32_to_cpu(ucode->u.v1.init_data_size));
 543                 src = ucode->u.v1.data;
 544                 break;
 545         }
 546
 547         if (build)
 548                 sprintf(buildstr, " build %u", build);
 549         else
 550                 buildstr[0] = '\0';
 551
 552         snprintf(drv->fw.fw_version,
 553                  sizeof(drv->fw.fw_version),
 554                  "%u.%u.%u.%u%s",
 555                  IWL_UCODE_MAJOR(drv->fw.ucode_ver),
 556                  IWL_UCODE_MINOR(drv->fw.ucode_ver),
 557                  IWL_UCODE_API(drv->fw.ucode_ver),
 558                  IWL_UCODE_SERIAL(drv->fw.ucode_ver),
 559                  buildstr);
 560
 561         /* Verify size of file vs. image size info in file's header */
 562
 563         if (ucode_raw->size != hdr_size +
 564             get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) +
 565             get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) +
 566             get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) +
 567             get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)) {
 568
 569                 IWL_ERR(drv,
 570                         "uCode file size %d does not match expected size\n",
 571                         (int)ucode_raw->size);
 572                 return -EINVAL;
 573         }
 574
 575
 576         set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, src);
 577         src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST);
 578         set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 579                        IWLAGN_RTC_INST_LOWER_BOUND);
 580         set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, src);
 581         src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA);
 582         set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 583                        IWLAGN_RTC_DATA_LOWER_BOUND);
 584         set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, src);
 585         src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST);
 586         set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 587                        IWLAGN_RTC_INST_LOWER_BOUND);
 588         set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, src);
 589         src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA);
 590         set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 591                        IWLAGN_RTC_DATA_LOWER_BOUND);
 592         return 0;
 593 }
 594
 595 #define FW_ADDR_CACHE_CONTROL 0xC0000000
 596
 597 static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
 598                                 const struct firmware *ucode_raw,
 599                                 struct iwl_firmware_pieces *pieces,
 600                                 struct iwl_ucode_capabilities *capa,
 601                                 bool *usniffer_images)
 602 {
 603         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
 604         struct iwl_ucode_tlv *tlv;
 605         size_t len = ucode_raw->size;
 606         const u8 *data;
 607         u32 tlv_len;
 608         u32 usniffer_img;
 609         enum iwl_ucode_tlv_type tlv_type;
 610         const u8 *tlv_data;
 611         char buildstr[25];
 612         u32 build, paging_mem_size;
 613         int num_of_cpus;
 614         bool usniffer_req = false;
 615
 616         if (len < sizeof(*ucode)) {
 617                 IWL_ERR(drv, "uCode has invalid length: %zd\n", len);
 618                 return -EINVAL;
 619         }
 620
 621         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
 622                 IWL_ERR(drv, "invalid uCode magic: 0X%x\n",
 623                         le32_to_cpu(ucode->magic));
 624                 return -EINVAL;
 625         }
 626
 627         drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
 628         memcpy(drv->fw.human_readable, ucode->human_readable,
 629                sizeof(drv->fw.human_readable));
 630         build = le32_to_cpu(ucode->build);
 631
 632         if (build)
 633                 sprintf(buildstr, " build %u", build);
 634         else
 635                 buildstr[0] = '\0';
 636
 637         snprintf(drv->fw.fw_version,
 638                  sizeof(drv->fw.fw_version),
 639                  "%u.%u.%u.%u%s",
 640                  IWL_UCODE_MAJOR(drv->fw.ucode_ver),
 641                  IWL_UCODE_MINOR(drv->fw.ucode_ver),
 642                  IWL_UCODE_API(drv->fw.ucode_ver),
 643                  IWL_UCODE_SERIAL(drv->fw.ucode_ver),
 644                  buildstr);
 645
 646         data = ucode->data;
 647
 648         len -= sizeof(*ucode);
 649
 650         while (len >= sizeof(*tlv)) {
 651                 len -= sizeof(*tlv);
 652                 tlv = (void *)data;
 653
 654                 tlv_len = le32_to_cpu(tlv->length);
 655                 tlv_type = le32_to_cpu(tlv->type);
 656                 tlv_data = tlv->data;
 657
 658                 if (len < tlv_len) {
 659                         IWL_ERR(drv, "invalid TLV len: %zd/%u\n",
 660                                 len, tlv_len);
 661                         return -EINVAL;
 662                 }
 663                 len -= ALIGN(tlv_len, 4);
 664                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
 665
 666                 switch (tlv_type) {
 667                 case IWL_UCODE_TLV_INST:
 668                         set_sec_data(pieces, IWL_UCODE_REGULAR,
 669                                      IWL_UCODE_SECTION_INST, tlv_data);
 670                         set_sec_size(pieces, IWL_UCODE_REGULAR,
 671                                      IWL_UCODE_SECTION_INST, tlv_len);
 672                         set_sec_offset(pieces, IWL_UCODE_REGULAR,
 673                                        IWL_UCODE_SECTION_INST,
 674                                        IWLAGN_RTC_INST_LOWER_BOUND);
 675                         break;
 676                 case IWL_UCODE_TLV_DATA:
 677                         set_sec_data(pieces, IWL_UCODE_REGULAR,
 678                                      IWL_UCODE_SECTION_DATA, tlv_data);
 679                         set_sec_size(pieces, IWL_UCODE_REGULAR,
 680                                      IWL_UCODE_SECTION_DATA, tlv_len);
 681                         set_sec_offset(pieces, IWL_UCODE_REGULAR,
 682                                        IWL_UCODE_SECTION_DATA,
 683                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 684                         break;
 685                 case IWL_UCODE_TLV_INIT:
 686                         set_sec_data(pieces, IWL_UCODE_INIT,
 687                                      IWL_UCODE_SECTION_INST, tlv_data);
 688                         set_sec_size(pieces, IWL_UCODE_INIT,
 689                                      IWL_UCODE_SECTION_INST, tlv_len);
 690                         set_sec_offset(pieces, IWL_UCODE_INIT,
 691                                        IWL_UCODE_SECTION_INST,
 692                                        IWLAGN_RTC_INST_LOWER_BOUND);
 693                         break;
 694                 case IWL_UCODE_TLV_INIT_DATA:
 695                         set_sec_data(pieces, IWL_UCODE_INIT,
 696                                      IWL_UCODE_SECTION_DATA, tlv_data);
 697                         set_sec_size(pieces, IWL_UCODE_INIT,
 698                                      IWL_UCODE_SECTION_DATA, tlv_len);
 699                         set_sec_offset(pieces, IWL_UCODE_INIT,
 700                                        IWL_UCODE_SECTION_DATA,
 701                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 702                         break;
 703                 case IWL_UCODE_TLV_BOOT:
 704                         IWL_ERR(drv, "Found unexpected BOOT ucode\n");
 705                         break;
 706                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
 707                         if (tlv_len != sizeof(u32))
 708                                 goto invalid_tlv_len;
 709                         capa->max_probe_length =
 710                                         le32_to_cpup((__le32 *)tlv_data);
 711                         break;
 712                 case IWL_UCODE_TLV_PAN:
 713                         if (tlv_len)
 714                                 goto invalid_tlv_len;
 715                         capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
 716                         break;
 717                 case IWL_UCODE_TLV_FLAGS:
 718                         /* must be at least one u32 */
 719                         if (tlv_len < sizeof(u32))
 720                                 goto invalid_tlv_len;
 721                         /* and a proper number of u32s */
 722                         if (tlv_len % sizeof(u32))
 723                                 goto invalid_tlv_len;
 724                         /*
 725                          * This driver only reads the first u32 as
 726                          * right now no more features are defined,
 727                          * if that changes then either the driver
 728                          * will not work with the new firmware, or
 729                          * it'll not take advantage of new features.
 730                          */
 731                         capa->flags = le32_to_cpup((__le32 *)tlv_data);
 732                         break;
 733                 case IWL_UCODE_TLV_API_CHANGES_SET:
 734                         if (tlv_len != sizeof(struct iwl_ucode_api))
 735                                 goto invalid_tlv_len;
 736                         iwl_set_ucode_api_flags(drv, tlv_data, capa);
 737                         break;
 738                 case IWL_UCODE_TLV_ENABLED_CAPABILITIES:
 739                         if (tlv_len != sizeof(struct iwl_ucode_capa))
 740                                 goto invalid_tlv_len;
 741                         iwl_set_ucode_capabilities(drv, tlv_data, capa);
 742                         break;
 743                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
 744                         if (tlv_len != sizeof(u32))
 745                                 goto invalid_tlv_len;
 746                         pieces->init_evtlog_ptr =
 747                                         le32_to_cpup((__le32 *)tlv_data);
 748                         break;
 749                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
 750                         if (tlv_len != sizeof(u32))
 751                                 goto invalid_tlv_len;
 752                         pieces->init_evtlog_size =
 753                                         le32_to_cpup((__le32 *)tlv_data);
 754                         break;
 755                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
 756                         if (tlv_len != sizeof(u32))
 757                                 goto invalid_tlv_len;
 758                         pieces->init_errlog_ptr =
 759                                         le32_to_cpup((__le32 *)tlv_data);
 760                         break;
 761                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
 762                         if (tlv_len != sizeof(u32))
 763                                 goto invalid_tlv_len;
 764                         pieces->inst_evtlog_ptr =
 765                                         le32_to_cpup((__le32 *)tlv_data);
 766                         break;
 767                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
 768                         if (tlv_len != sizeof(u32))
 769                                 goto invalid_tlv_len;
 770                         pieces->inst_evtlog_size =
 771                                         le32_to_cpup((__le32 *)tlv_data);
 772                         break;
 773                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
 774                         if (tlv_len != sizeof(u32))
 775                                 goto invalid_tlv_len;
 776                         pieces->inst_errlog_ptr =
 777                                         le32_to_cpup((__le32 *)tlv_data);
 778                         break;
 779                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
 780                         if (tlv_len)
 781                                 goto invalid_tlv_len;
 782                         drv->fw.enhance_sensitivity_table = true;
 783                         break;
 784                 case IWL_UCODE_TLV_WOWLAN_INST:
 785                         set_sec_data(pieces, IWL_UCODE_WOWLAN,
 786                                      IWL_UCODE_SECTION_INST, tlv_data);
 787                         set_sec_size(pieces, IWL_UCODE_WOWLAN,
 788                                      IWL_UCODE_SECTION_INST, tlv_len);
 789                         set_sec_offset(pieces, IWL_UCODE_WOWLAN,
 790                                        IWL_UCODE_SECTION_INST,
 791                                        IWLAGN_RTC_INST_LOWER_BOUND);
 792                         break;
 793                 case IWL_UCODE_TLV_WOWLAN_DATA:
 794                         set_sec_data(pieces, IWL_UCODE_WOWLAN,
 795                                      IWL_UCODE_SECTION_DATA, tlv_data);
 796                         set_sec_size(pieces, IWL_UCODE_WOWLAN,
 797                                      IWL_UCODE_SECTION_DATA, tlv_len);
 798                         set_sec_offset(pieces, IWL_UCODE_WOWLAN,
 799                                        IWL_UCODE_SECTION_DATA,
 800                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 801                         break;
 802                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
 803                         if (tlv_len != sizeof(u32))
 804                                 goto invalid_tlv_len;
 805                         capa->standard_phy_calibration_size =
 806                                         le32_to_cpup((__le32 *)tlv_data);
 807                         break;
 808                 case IWL_UCODE_TLV_SEC_RT:
 809                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
 810                                             tlv_len);
 811                         drv->fw.type = IWL_FW_MVM;
 812                         break;
 813                 case IWL_UCODE_TLV_SEC_INIT:
 814                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
 815                                             tlv_len);
 816                         drv->fw.type = IWL_FW_MVM;
 817                         break;
 818                 case IWL_UCODE_TLV_SEC_WOWLAN:
 819                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
 820                                             tlv_len);
 821                         drv->fw.type = IWL_FW_MVM;
 822                         break;
 823                 case IWL_UCODE_TLV_DEF_CALIB:
 824                         if (tlv_len != sizeof(struct iwl_tlv_calib_data))
 825                                 goto invalid_tlv_len;
 826                         if (iwl_set_default_calib(drv, tlv_data))
 827                                 goto tlv_error;
 828                         break;
 829                 case IWL_UCODE_TLV_PHY_SKU:
 830                         if (tlv_len != sizeof(u32))
 831                                 goto invalid_tlv_len;
 832                         drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data);
 833                         drv->fw.valid_tx_ant = (drv->fw.phy_config &
 834                                                 FW_PHY_CFG_TX_CHAIN) >>
 835                                                 FW_PHY_CFG_TX_CHAIN_POS;
 836                         drv->fw.valid_rx_ant = (drv->fw.phy_config &
 837                                                 FW_PHY_CFG_RX_CHAIN) >>
 838                                                 FW_PHY_CFG_RX_CHAIN_POS;
 839                         break;
 840                 case IWL_UCODE_TLV_SECURE_SEC_RT:
 841                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
 842                                             tlv_len);
 843                         drv->fw.type = IWL_FW_MVM;
 844                         break;
 845                 case IWL_UCODE_TLV_SECURE_SEC_INIT:
 846                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
 847                                             tlv_len);
 848                         drv->fw.type = IWL_FW_MVM;
 849                         break;
 850                 case IWL_UCODE_TLV_SECURE_SEC_WOWLAN:
 851                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
 852                                             tlv_len);
 853                         drv->fw.type = IWL_FW_MVM;
 854                         break;
 855                 case IWL_UCODE_TLV_NUM_OF_CPU:
 856                         if (tlv_len != sizeof(u32))
 857                                 goto invalid_tlv_len;
 858                         num_of_cpus =
 859                                 le32_to_cpup((__le32 *)tlv_data);
 860
 861                         if (num_of_cpus == 2) {
 862                                 drv->fw.img[IWL_UCODE_REGULAR].is_dual_cpus =
 863                                         true;
 864                                 drv->fw.img[IWL_UCODE_INIT].is_dual_cpus =
 865                                         true;
 866                                 drv->fw.img[IWL_UCODE_WOWLAN].is_dual_cpus =
 867                                         true;
 868                         } else if ((num_of_cpus > 2) || (num_of_cpus < 1)) {
 869                                 IWL_ERR(drv, "Driver support upto 2 CPUs\n");
 870                                 return -EINVAL;
 871                         }
 872                         break;
 873                 case IWL_UCODE_TLV_CSCHEME:
 874                         if (iwl_store_cscheme(&drv->fw, tlv_data, tlv_len))
 875                                 goto invalid_tlv_len;
 876                         break;
 877                 case IWL_UCODE_TLV_N_SCAN_CHANNELS:
 878                         if (tlv_len != sizeof(u32))
 879                                 goto invalid_tlv_len;
 880                         capa->n_scan_channels =
 881                                 le32_to_cpup((__le32 *)tlv_data);
 882                         break;
 883                 case IWL_UCODE_TLV_FW_VERSION: {
 884                         __le32 *ptr = (void *)tlv_data;
 885                         u32 major, minor;
 886                         u8 local_comp;
 887
 888                         if (tlv_len != sizeof(u32) * 3)
 889                                 goto invalid_tlv_len;
 890
 891                         major = le32_to_cpup(ptr++);
 892                         minor = le32_to_cpup(ptr++);
 893                         local_comp = le32_to_cpup(ptr);
 894
 895                         if (major >= 35)
 896                                 snprintf(drv->fw.fw_version,
 897                                          sizeof(drv->fw.fw_version),
 898                                         "%u.%08x.%u", major, minor, local_comp);
 899                         else
 900                                 snprintf(drv->fw.fw_version,
 901                                          sizeof(drv->fw.fw_version),
 902                                         "%u.%u.%u", major, minor, local_comp);
 903                         break;
 904                         }
 905                 case IWL_UCODE_TLV_FW_DBG_DEST: {
 906                         struct iwl_fw_dbg_dest_tlv *dest = NULL;
 907                         struct iwl_fw_dbg_dest_tlv_v1 *dest_v1 = NULL;
 908                         u8 mon_mode;
 909
 910                         pieces->dbg_dest_ver = (u8 *)tlv_data;
 911                         if (*pieces->dbg_dest_ver == 1) {
 912                                 dest = (void *)tlv_data;
 913                         } else if (*pieces->dbg_dest_ver == 0) {
 914                                 dest_v1 = (void *)tlv_data;
 915                         } else {
 916                                 IWL_ERR(drv,
 917                                         "The version is %d, and it is invalid\n",
 918                                         *pieces->dbg_dest_ver);
 919                                 break;
 920                         }
 921
 922                         if (pieces->dbg_dest_tlv_init) {
 923                                 IWL_ERR(drv,
 924                                         "dbg destination ignored, already exists\n");
 925                                 break;
 926                         }
 927
 928                         pieces->dbg_dest_tlv_init = true;
 929
 930                         if (dest_v1) {
 931                                 pieces->dbg_dest_tlv_v1 = dest_v1;
 932                                 mon_mode = dest_v1->monitor_mode;
 933                         } else {
 934                                 pieces->dbg_dest_tlv = dest;
 935                                 mon_mode = dest->monitor_mode;
 936                         }
 937
 938                         IWL_INFO(drv, "Found debug destination: %s\n",
 939                                  get_fw_dbg_mode_string(mon_mode));
 940
 941                         drv->fw.dbg.n_dest_reg = (dest_v1) ?
 942                                 tlv_len -
 943                                 offsetof(struct iwl_fw_dbg_dest_tlv_v1,
 944                                          reg_ops) :
 945                                 tlv_len -
 946                                 offsetof(struct iwl_fw_dbg_dest_tlv,
 947                                          reg_ops);
 948
 949                         drv->fw.dbg.n_dest_reg /=
 950                                 sizeof(drv->fw.dbg.dest_tlv->reg_ops[0]);
 951
 952                         break;
 953                         }
 954                 case IWL_UCODE_TLV_FW_DBG_CONF: {
 955                         struct iwl_fw_dbg_conf_tlv *conf = (void *)tlv_data;
 956
 957                         if (!pieces->dbg_dest_tlv_init) {
 958                                 IWL_ERR(drv,
 959                                         "Ignore dbg config %d - no destination configured\n",
 960                                         conf->id);
 961                                 break;
 962                         }
 963
 964                         if (conf->id >= ARRAY_SIZE(drv->fw.dbg.conf_tlv)) {
 965                                 IWL_ERR(drv,
 966                                         "Skip unknown configuration: %d\n",
 967                                         conf->id);
 968                                 break;
 969                         }
 970
 971                         if (pieces->dbg_conf_tlv[conf->id]) {
 972                                 IWL_ERR(drv,
 973                                         "Ignore duplicate dbg config %d\n",
 974                                         conf->id);
 975                                 break;
 976                         }
 977
 978                         if (conf->usniffer)
 979                                 usniffer_req = true;
 980
 981                         IWL_INFO(drv, "Found debug configuration: %d\n",
 982                                  conf->id);
 983
 984                         pieces->dbg_conf_tlv[conf->id] = conf;
 985                         pieces->dbg_conf_tlv_len[conf->id] = tlv_len;
 986                         break;
 987                         }
 988                 case IWL_UCODE_TLV_FW_DBG_TRIGGER: {
 989                         struct iwl_fw_dbg_trigger_tlv *trigger =
 990                                 (void *)tlv_data;
 991                         u32 trigger_id = le32_to_cpu(trigger->id);
 992
 993                         if (trigger_id >= ARRAY_SIZE(drv->fw.dbg.trigger_tlv)) {
 994                                 IWL_ERR(drv,
 995                                         "Skip unknown trigger: %u\n",
 996                                         trigger->id);
 997                                 break;
 998                         }
 999
1000                         if (pieces->dbg_trigger_tlv[trigger_id]) {
1001                                 IWL_ERR(drv,
1002                                         "Ignore duplicate dbg trigger %u\n",
1003                                         trigger->id);
1004                                 break;
1005                         }
1006
1007                         IWL_INFO(drv, "Found debug trigger: %u\n", trigger->id);
1008
1009                         pieces->dbg_trigger_tlv[trigger_id] = trigger;
1010                         pieces->dbg_trigger_tlv_len[trigger_id] = tlv_len;
1011                         break;
1012                         }
1013                 case IWL_UCODE_TLV_FW_DBG_DUMP_LST: {
1014                         if (tlv_len != sizeof(u32)) {
1015                                 IWL_ERR(drv,
1016                                         "dbg lst mask size incorrect, skip\n");
1017                                 break;
1018                         }
1019
1020                         drv->fw.dbg.dump_mask =
1021                                 le32_to_cpup((__le32 *)tlv_data);
1022                         break;
1023                         }
1024                 case IWL_UCODE_TLV_SEC_RT_USNIFFER:
1025                         *usniffer_images = true;
1026                         iwl_store_ucode_sec(pieces, tlv_data,
1027                                             IWL_UCODE_REGULAR_USNIFFER,
1028                                             tlv_len);
1029                         break;
1030                 case IWL_UCODE_TLV_PAGING:
1031                         if (tlv_len != sizeof(u32))
1032                                 goto invalid_tlv_len;
1033                         paging_mem_size = le32_to_cpup((__le32 *)tlv_data);
1034
1035                         IWL_DEBUG_FW(drv,
1036                                      "Paging: paging enabled (size = %u bytes)\n",
1037                                      paging_mem_size);
1038
1039                         if (paging_mem_size > MAX_PAGING_IMAGE_SIZE) {
1040                                 IWL_ERR(drv,
1041                                         "Paging: driver supports up to %lu bytes for paging image\n",
1042                                         MAX_PAGING_IMAGE_SIZE);
1043                                 return -EINVAL;
1044                         }
1045
1046                         if (paging_mem_size & (FW_PAGING_SIZE - 1)) {
1047                                 IWL_ERR(drv,
1048                                         "Paging: image isn't multiple %lu\n",
1049                                         FW_PAGING_SIZE);
1050                                 return -EINVAL;
1051                         }
1052
1053                         drv->fw.img[IWL_UCODE_REGULAR].paging_mem_size =
1054                                 paging_mem_size;
1055                         usniffer_img = IWL_UCODE_REGULAR_USNIFFER;
1056                         drv->fw.img[usniffer_img].paging_mem_size =
1057                                 paging_mem_size;
1058                         break;
1059                 case IWL_UCODE_TLV_FW_GSCAN_CAPA:
1060                         /* ignored */
1061                         break;
1062                 case IWL_UCODE_TLV_FW_MEM_SEG: {
1063                         struct iwl_fw_dbg_mem_seg_tlv *dbg_mem =
1064                                 (void *)tlv_data;
1065                         size_t size;
1066                         struct iwl_fw_dbg_mem_seg_tlv *n;
1067
1068                         if (tlv_len != (sizeof(*dbg_mem)))
1069                                 goto invalid_tlv_len;
1070
1071                         IWL_DEBUG_INFO(drv, "Found debug memory segment: %u\n",
1072                                        dbg_mem->data_type);
1073
1074                         size = sizeof(*pieces->dbg_mem_tlv) *
1075                                (pieces->n_mem_tlv + 1);
1076                         n = krealloc(pieces->dbg_mem_tlv, size, GFP_KERNEL);
1077                         if (!n)
1078                                 return -ENOMEM;
1079                         pieces->dbg_mem_tlv = n;
1080                         pieces->dbg_mem_tlv[pieces->n_mem_tlv] = *dbg_mem;
1081                         pieces->n_mem_tlv++;
1082                         break;
1083                         }
1084                 case IWL_UCODE_TLV_IML: {
1085                         drv->fw.iml_len = tlv_len;
1086                         drv->fw.iml = kmemdup(tlv_data, tlv_len, GFP_KERNEL);
1087                         if (!drv->fw.iml)
1088                                 return -ENOMEM;
1089                         break;
1090                         }
1091                 case IWL_UCODE_TLV_FW_RECOVERY_INFO: {
1092                         struct {
1093                                 __le32 buf_addr;
1094                                 __le32 buf_size;
1095                         } *recov_info = (void *)tlv_data;
1096
1097                         if (tlv_len != sizeof(*recov_info))
1098                                 goto invalid_tlv_len;
1099                         capa->error_log_addr =
1100                                 le32_to_cpu(recov_info->buf_addr);
1101                         capa->error_log_size =
1102                                 le32_to_cpu(recov_info->buf_size);
1103                         }
1104                         break;
1105                 case IWL_UCODE_TLV_FW_FSEQ_VERSION: {
1106                         struct {
1107                                 u8 version[32];
1108                                 u8 sha1[20];
1109                         } *fseq_ver = (void *)tlv_data;
1110
1111                         if (tlv_len != sizeof(*fseq_ver))
1112                                 goto invalid_tlv_len;
1113                         IWL_INFO(drv, "TLV_FW_FSEQ_VERSION: %s\n",
1114                                  fseq_ver->version);
1115                         }
1116                         break;
1117                 case IWL_UCODE_TLV_UMAC_DEBUG_ADDRS: {
1118                         struct iwl_umac_debug_addrs *dbg_ptrs =
1119                                 (void *)tlv_data;
1120
1121                         if (tlv_len != sizeof(*dbg_ptrs))
1122                                 goto invalid_tlv_len;
1123                         if (drv->trans->trans_cfg->device_family <
1124                             IWL_DEVICE_FAMILY_22000)
1125                                 break;
1126                         drv->trans->dbg.umac_error_event_table =
1127                                 le32_to_cpu(dbg_ptrs->error_info_addr) &
1128                                 ~FW_ADDR_CACHE_CONTROL;
1129                         drv->trans->dbg.error_event_table_tlv_status |=
1130                                 IWL_ERROR_EVENT_TABLE_UMAC;
1131                         break;
1132                         }
1133                 case IWL_UCODE_TLV_LMAC_DEBUG_ADDRS: {
1134                         struct iwl_lmac_debug_addrs *dbg_ptrs =
1135                                 (void *)tlv_data;
1136
1137                         if (tlv_len != sizeof(*dbg_ptrs))
1138                                 goto invalid_tlv_len;
1139                         if (drv->trans->trans_cfg->device_family <
1140                             IWL_DEVICE_FAMILY_22000)
1141                                 break;
1142                         drv->trans->dbg.lmac_error_event_table[0] =
1143                                 le32_to_cpu(dbg_ptrs->error_event_table_ptr) &
1144                                 ~FW_ADDR_CACHE_CONTROL;
1145                         drv->trans->dbg.error_event_table_tlv_status |=
1146                                 IWL_ERROR_EVENT_TABLE_LMAC1;
1147                         break;
1148                         }
1149                 case IWL_UCODE_TLV_TYPE_DEBUG_INFO:
1150                 case IWL_UCODE_TLV_TYPE_BUFFER_ALLOCATION:
1151                 case IWL_UCODE_TLV_TYPE_HCMD:
1152                 case IWL_UCODE_TLV_TYPE_REGIONS:
1153                 case IWL_UCODE_TLV_TYPE_TRIGGERS:
1154                         if (iwlwifi_mod_params.enable_ini)
1155                                 iwl_dbg_tlv_alloc(drv->trans, tlv, false);
1156                         break;
1157                 case IWL_UCODE_TLV_CMD_VERSIONS:
1158                         if (tlv_len % sizeof(struct iwl_fw_cmd_version)) {
1159                                 IWL_ERR(drv,
1160                                         "Invalid length for command versions: %u\n",
1161                                         tlv_len);
1162                                 tlv_len /= sizeof(struct iwl_fw_cmd_version);
1163                                 tlv_len *= sizeof(struct iwl_fw_cmd_version);
1164                         }
1165                         if (WARN_ON(capa->cmd_versions))
1166                                 return -EINVAL;
1167                         capa->cmd_versions = kmemdup(tlv_data, tlv_len,
1168                                                      GFP_KERNEL);
1169                         if (!capa->cmd_versions)
1170                                 return -ENOMEM;
1171                         capa->n_cmd_versions =
1172                                 tlv_len / sizeof(struct iwl_fw_cmd_version);
1173                         break;
1174                 default:
1175                         IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
1176                         break;
1177                 }
1178         }
1179
1180         if (!fw_has_capa(capa, IWL_UCODE_TLV_CAPA_USNIFFER_UNIFIED) &&
1181             usniffer_req && !*usniffer_images) {
1182                 IWL_ERR(drv,
1183                         "user selected to work with usniffer but usniffer image isn't available in ucode package\n");
1184                 return -EINVAL;
1185         }
1186
1187         if (len) {
1188                 IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
1189                 iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len);
1190                 return -EINVAL;
1191         }
1192
1193         return 0;
1194
1195  invalid_tlv_len:
1196         IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
1197  tlv_error:
1198         iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);
1199
1200         return -EINVAL;
1201 }
1202
1203 static int iwl_alloc_ucode(struct iwl_drv *drv,
1204                            struct iwl_firmware_pieces *pieces,
1205                            enum iwl_ucode_type type)
1206 {
1207         int i;
1208         struct fw_desc *sec;
1209
1210         sec = kcalloc(pieces->img[type].sec_counter, sizeof(*sec), GFP_KERNEL);
1211         if (!sec)
1212                 return -ENOMEM;
1213         drv->fw.img[type].sec = sec;
1214         drv->fw.img[type].num_sec = pieces->img[type].sec_counter;
1215
1216         for (i = 0; i < pieces->img[type].sec_counter; i++)
1217                 if (iwl_alloc_fw_desc(drv, &sec[i], get_sec(pieces, type, i)))
1218                         return -ENOMEM;
1219
1220         return 0;
1221 }
1222
1223 static int validate_sec_sizes(struct iwl_drv *drv,
1224                               struct iwl_firmware_pieces *pieces,
1225                               const struct iwl_cfg *cfg)
1226 {
1227         IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %zd\n",
1228                 get_sec_size(pieces, IWL_UCODE_REGULAR,
1229                              IWL_UCODE_SECTION_INST));
1230         IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %zd\n",
1231                 get_sec_size(pieces, IWL_UCODE_REGULAR,
1232                              IWL_UCODE_SECTION_DATA));
1233         IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %zd\n",
1234                 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST));
1235         IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %zd\n",
1236                 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA));
1237
1238         /* Verify that uCode images will fit in card's SRAM. */
1239         if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
1240             cfg->max_inst_size) {
1241                 IWL_ERR(drv, "uCode instr len %zd too large to fit in\n",
1242                         get_sec_size(pieces, IWL_UCODE_REGULAR,
1243                                      IWL_UCODE_SECTION_INST));
1244                 return -1;
1245         }
1246
1247         if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
1248             cfg->max_data_size) {
1249                 IWL_ERR(drv, "uCode data len %zd too large to fit in\n",
1250                         get_sec_size(pieces, IWL_UCODE_REGULAR,
1251                                      IWL_UCODE_SECTION_DATA));
1252                 return -1;
1253         }
1254
1255         if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) >
1256              cfg->max_inst_size) {
1257                 IWL_ERR(drv, "uCode init instr len %zd too large to fit in\n",
1258                         get_sec_size(pieces, IWL_UCODE_INIT,
1259                                      IWL_UCODE_SECTION_INST));
1260                 return -1;
1261         }
1262
1263         if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA) >
1264             cfg->max_data_size) {
1265                 IWL_ERR(drv, "uCode init data len %zd too large to fit in\n",
1266                         get_sec_size(pieces, IWL_UCODE_REGULAR,
1267                                      IWL_UCODE_SECTION_DATA));
1268                 return -1;
1269         }
1270         return 0;
1271 }
1272
1273 static struct iwl_op_mode *
1274 _iwl_op_mode_start(struct iwl_drv *drv, struct iwlwifi_opmode_table *op)
1275 {
1276         const struct iwl_op_mode_ops *ops = op->ops;
1277         struct dentry *dbgfs_dir = NULL;
1278         struct iwl_op_mode *op_mode = NULL;
1279
1280 #ifdef CONFIG_IWLWIFI_DEBUGFS
1281         drv->dbgfs_op_mode = debugfs_create_dir(op->name,
1282                                                 drv->dbgfs_drv);
1283         dbgfs_dir = drv->dbgfs_op_mode;
1284 #endif
1285
1286         op_mode = ops->start(drv->trans, drv->trans->cfg, &drv->fw, dbgfs_dir);
1287
1288 #ifdef CONFIG_IWLWIFI_DEBUGFS
1289         if (!op_mode) {
1290                 debugfs_remove_recursive(drv->dbgfs_op_mode);
1291                 drv->dbgfs_op_mode = NULL;
1292         }
1293 #endif
1294
1295         return op_mode;
1296 }
1297
1298 static void _iwl_op_mode_stop(struct iwl_drv *drv)
1299 {
1300         /* op_mode can be NULL if its start failed */
1301         if (drv->op_mode) {
1302                 iwl_op_mode_stop(drv->op_mode);
1303                 drv->op_mode = NULL;
1304
1305 #ifdef CONFIG_IWLWIFI_DEBUGFS
1306                 debugfs_remove_recursive(drv->dbgfs_op_mode);
1307                 drv->dbgfs_op_mode = NULL;
1308 #endif
1309         }
1310 }
1311
1312 /**
1313  * iwl_req_fw_callback - callback when firmware was loaded
1314  *
1315  * If loaded successfully, copies the firmware into buffers
1316  * for the card to fetch (via DMA).
1317  */
1318 static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
1319 {
1320         struct iwl_drv *drv = context;
1321         struct iwl_fw *fw = &drv->fw;
1322         struct iwl_ucode_header *ucode;
1323         struct iwlwifi_opmode_table *op;
1324         int err;
1325         struct iwl_firmware_pieces *pieces;
1326         const unsigned int api_max = drv->trans->cfg->ucode_api_max;
1327         const unsigned int api_min = drv->trans->cfg->ucode_api_min;
1328         size_t trigger_tlv_sz[FW_DBG_TRIGGER_MAX];
1329         u32 api_ver;
1330         int i;
1331         bool load_module = false;
1332         bool usniffer_images = false;
1333
1334         fw->ucode_capa.max_probe_length = IWL_DEFAULT_MAX_PROBE_LENGTH;
1335         fw->ucode_capa.standard_phy_calibration_size =
1336                         IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1337         fw->ucode_capa.n_scan_channels = IWL_DEFAULT_SCAN_CHANNELS;
1338         /* dump all fw memory areas by default */
1339         fw->dbg.dump_mask = 0xffffffff;
1340
1341         pieces = kzalloc(sizeof(*pieces), GFP_KERNEL);
1342         if (!pieces)
1343                 goto out_free_fw;
1344
1345         if (!ucode_raw)
1346                 goto try_again;
1347
1348         IWL_DEBUG_FW_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
1349                           drv->firmware_name, ucode_raw->size);
1350
1351         /* Make sure that we got at least the API version number */
1352         if (ucode_raw->size < 4) {
1353                 IWL_ERR(drv, "File size way too small!\n");
1354                 goto try_again;
1355         }
1356
1357         /* Data from ucode file:  header followed by uCode images */
1358         ucode = (struct iwl_ucode_header *)ucode_raw->data;
1359
1360         if (ucode->ver)
1361                 err = iwl_parse_v1_v2_firmware(drv, ucode_raw, pieces);
1362         else
1363                 err = iwl_parse_tlv_firmware(drv, ucode_raw, pieces,
1364                                              &fw->ucode_capa, &usniffer_images);
1365
1366         if (err)
1367                 goto try_again;
1368
1369         if (fw_has_api(&drv->fw.ucode_capa, IWL_UCODE_TLV_API_NEW_VERSION))
1370                 api_ver = drv->fw.ucode_ver;
1371         else
1372                 api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
1373
1374         /*
1375          * api_ver should match the api version forming part of the
1376          * firmware filename ... but we don't check for that and only rely
1377          * on the API version read from firmware header from here on forward
1378          */
1379         if (api_ver < api_min || api_ver > api_max) {
1380                 IWL_ERR(drv,
1381                         "Driver unable to support your firmware API. "
1382                         "Driver supports v%u, firmware is v%u.\n",
1383                         api_max, api_ver);
1384                 goto try_again;
1385         }
1386
1387         /*
1388          * In mvm uCode there is no difference between data and instructions
1389          * sections.
1390          */
1391         if (fw->type == IWL_FW_DVM && validate_sec_sizes(drv, pieces,
1392                                                          drv->trans->cfg))
1393                 goto try_again;
1394
1395         /* Allocate ucode buffers for card's bus-master loading ... */
1396
1397         /* Runtime instructions and 2 copies of data:
1398          * 1) unmodified from disk
1399          * 2) backup cache for save/restore during power-downs
1400          */
1401         for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
1402                 if (iwl_alloc_ucode(drv, pieces, i))
1403                         goto out_free_fw;
1404
1405         if (pieces->dbg_dest_tlv_init) {
1406                 size_t dbg_dest_size = sizeof(*drv->fw.dbg.dest_tlv) +
1407                         sizeof(drv->fw.dbg.dest_tlv->reg_ops[0]) *
1408                         drv->fw.dbg.n_dest_reg;
1409
1410                 drv->fw.dbg.dest_tlv = kmalloc(dbg_dest_size, GFP_KERNEL);
1411
1412                 if (!drv->fw.dbg.dest_tlv)
1413                         goto out_free_fw;
1414
1415                 if (*pieces->dbg_dest_ver == 0) {
1416                         memcpy(drv->fw.dbg.dest_tlv, pieces->dbg_dest_tlv_v1,
1417                                dbg_dest_size);
1418                 } else {
1419                         struct iwl_fw_dbg_dest_tlv_v1 *dest_tlv =
1420                                 drv->fw.dbg.dest_tlv;
1421
1422                         dest_tlv->version = pieces->dbg_dest_tlv->version;
1423                         dest_tlv->monitor_mode =
1424                                 pieces->dbg_dest_tlv->monitor_mode;
1425                         dest_tlv->size_power =
1426                                 pieces->dbg_dest_tlv->size_power;
1427                         dest_tlv->wrap_count =
1428                                 pieces->dbg_dest_tlv->wrap_count;
1429                         dest_tlv->write_ptr_reg =
1430                                 pieces->dbg_dest_tlv->write_ptr_reg;
1431                         dest_tlv->base_shift =
1432                                 pieces->dbg_dest_tlv->base_shift;
1433                         memcpy(dest_tlv->reg_ops,
1434                                pieces->dbg_dest_tlv->reg_ops,
1435                                sizeof(drv->fw.dbg.dest_tlv->reg_ops[0]) *
1436                                drv->fw.dbg.n_dest_reg);
1437
1438                         /* In version 1 of the destination tlv, which is
1439                          * relevant for internal buffer exclusively,
1440                          * the base address is part of given with the length
1441                          * of the buffer, and the size shift is give instead of
1442                          * end shift. We now store these values in base_reg,
1443                          * and end shift, and when dumping the data we'll
1444                          * manipulate it for extracting both the length and
1445                          * base address */
1446                         dest_tlv->base_reg = pieces->dbg_dest_tlv->cfg_reg;
1447                         dest_tlv->end_shift =
1448                                 pieces->dbg_dest_tlv->size_shift;
1449                 }
1450         }
1451
1452         for (i = 0; i < ARRAY_SIZE(drv->fw.dbg.conf_tlv); i++) {
1453                 if (pieces->dbg_conf_tlv[i]) {
1454                         drv->fw.dbg.conf_tlv[i] =
1455                                 kmemdup(pieces->dbg_conf_tlv[i],
1456                                         pieces->dbg_conf_tlv_len[i],
1457                                         GFP_KERNEL);
1458                         if (!pieces->dbg_conf_tlv_len[i])
1459                                 goto out_free_fw;
1460                 }
1461         }
1462
1463         memset(&trigger_tlv_sz, 0xff, sizeof(trigger_tlv_sz));
1464
1465         trigger_tlv_sz[FW_DBG_TRIGGER_MISSED_BEACONS] =
1466                 sizeof(struct iwl_fw_dbg_trigger_missed_bcon);
1467         trigger_tlv_sz[FW_DBG_TRIGGER_CHANNEL_SWITCH] = 0;
1468         trigger_tlv_sz[FW_DBG_TRIGGER_FW_NOTIF] =
1469                 sizeof(struct iwl_fw_dbg_trigger_cmd);
1470         trigger_tlv_sz[FW_DBG_TRIGGER_MLME] =
1471                 sizeof(struct iwl_fw_dbg_trigger_mlme);
1472         trigger_tlv_sz[FW_DBG_TRIGGER_STATS] =
1473                 sizeof(struct iwl_fw_dbg_trigger_stats);
1474         trigger_tlv_sz[FW_DBG_TRIGGER_RSSI] =
1475                 sizeof(struct iwl_fw_dbg_trigger_low_rssi);
1476         trigger_tlv_sz[FW_DBG_TRIGGER_TXQ_TIMERS] =
1477                 sizeof(struct iwl_fw_dbg_trigger_txq_timer);
1478         trigger_tlv_sz[FW_DBG_TRIGGER_TIME_EVENT] =
1479                 sizeof(struct iwl_fw_dbg_trigger_time_event);
1480         trigger_tlv_sz[FW_DBG_TRIGGER_BA] =
1481                 sizeof(struct iwl_fw_dbg_trigger_ba);
1482         trigger_tlv_sz[FW_DBG_TRIGGER_TDLS] =
1483                 sizeof(struct iwl_fw_dbg_trigger_tdls);
1484
1485         for (i = 0; i < ARRAY_SIZE(drv->fw.dbg.trigger_tlv); i++) {
1486                 if (pieces->dbg_trigger_tlv[i]) {
1487                         /*
1488                          * If the trigger isn't long enough, WARN and exit.
1489                          * Someone is trying to debug something and he won't
1490                          * be able to catch the bug he is trying to chase.
1491                          * We'd better be noisy to be sure he knows what's
1492                          * going on.
1493                          */
1494                         if (WARN_ON(pieces->dbg_trigger_tlv_len[i] <
1495                                     (trigger_tlv_sz[i] +
1496                                      sizeof(struct iwl_fw_dbg_trigger_tlv))))
1497                                 goto out_free_fw;
1498                         drv->fw.dbg.trigger_tlv_len[i] =
1499                                 pieces->dbg_trigger_tlv_len[i];
1500                         drv->fw.dbg.trigger_tlv[i] =
1501                                 kmemdup(pieces->dbg_trigger_tlv[i],
1502                                         drv->fw.dbg.trigger_tlv_len[i],
1503                                         GFP_KERNEL);
1504                         if (!drv->fw.dbg.trigger_tlv[i])
1505                                 goto out_free_fw;
1506                 }
1507         }
1508
1509         /* Now that we can no longer fail, copy information */
1510
1511         drv->fw.dbg.mem_tlv = pieces->dbg_mem_tlv;
1512         pieces->dbg_mem_tlv = NULL;
1513         drv->fw.dbg.n_mem_tlv = pieces->n_mem_tlv;
1514
1515         /*
1516          * The (size - 16) / 12 formula is based on the information recorded
1517          * for each event, which is of mode 1 (including timestamp) for all
1518          * new microcodes that include this information.
1519          */
1520         fw->init_evtlog_ptr = pieces->init_evtlog_ptr;
1521         if (pieces->init_evtlog_size)
1522                 fw->init_evtlog_size = (pieces->init_evtlog_size - 16)/12;
1523         else
1524                 fw->init_evtlog_size =
1525                         drv->trans->trans_cfg->base_params->max_event_log_size;
1526         fw->init_errlog_ptr = pieces->init_errlog_ptr;
1527         fw->inst_evtlog_ptr = pieces->inst_evtlog_ptr;
1528         if (pieces->inst_evtlog_size)
1529                 fw->inst_evtlog_size = (pieces->inst_evtlog_size - 16)/12;
1530         else
1531                 fw->inst_evtlog_size =
1532                         drv->trans->trans_cfg->base_params->max_event_log_size;
1533         fw->inst_errlog_ptr = pieces->inst_errlog_ptr;
1534
1535         /*
1536          * figure out the offset of chain noise reset and gain commands
1537          * base on the size of standard phy calibration commands table size
1538          */
1539         if (fw->ucode_capa.standard_phy_calibration_size >
1540             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1541                 fw->ucode_capa.standard_phy_calibration_size =
1542                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1543
1544         /* We have our copies now, allow OS release its copies */
1545         release_firmware(ucode_raw);
1546
1547         mutex_lock(&iwlwifi_opmode_table_mtx);
1548         switch (fw->type) {
1549         case IWL_FW_DVM:
1550                 op = &iwlwifi_opmode_table[DVM_OP_MODE];
1551                 break;
1552         default:
1553                 WARN(1, "Invalid fw type %d\n", fw->type);
1554                 /* fall through */
1555         case IWL_FW_MVM:
1556                 op = &iwlwifi_opmode_table[MVM_OP_MODE];
1557                 break;
1558         }
1559
1560         IWL_INFO(drv, "loaded firmware version %s op_mode %s\n",
1561                  drv->fw.fw_version, op->name);
1562
1563         /* add this device to the list of devices using this op_mode */
1564         list_add_tail(&drv->list, &op->drv);
1565
1566         if (op->ops) {
1567                 drv->op_mode = _iwl_op_mode_start(drv, op);
1568
1569                 if (!drv->op_mode) {
1570                         mutex_unlock(&iwlwifi_opmode_table_mtx);
1571                         goto out_unbind;
1572                 }
1573         } else {
1574                 load_module = true;
1575         }
1576         mutex_unlock(&iwlwifi_opmode_table_mtx);
1577
1578         /*
1579          * Complete the firmware request last so that
1580          * a driver unbind (stop) doesn't run while we
1581          * are doing the start() above.
1582          */
1583         complete(&drv->request_firmware_complete);
1584
1585         /*
1586          * Load the module last so we don't block anything
1587          * else from proceeding if the module fails to load
1588          * or hangs loading.
1589          */
1590         if (load_module) {
1591                 request_module("%s", op->name);
1592 #ifdef CONFIG_IWLWIFI_OPMODE_MODULAR
1593                 if (err)
1594                         IWL_ERR(drv,
1595                                 "failed to load module %s (error %d), is dynamic loading enabled?\n",
1596                                 op->name, err);
1597 #endif
1598         }
1599         goto free;
1600
1601  try_again:
1602         /* try next, if any */
1603         release_firmware(ucode_raw);
1604         if (iwl_request_firmware(drv, false))
1605                 goto out_unbind;
1606         goto free;
1607
1608  out_free_fw:
1609         release_firmware(ucode_raw);
1610  out_unbind:
1611         complete(&drv->request_firmware_complete);
1612         device_release_driver(drv->trans->dev);
1613  free:
1614         if (pieces) {
1615                 for (i = 0; i < ARRAY_SIZE(pieces->img); i++)
1616                         kfree(pieces->img[i].sec);
1617                 kfree(pieces->dbg_mem_tlv);
1618                 kfree(pieces);
1619         }
1620 }
1621
1622 struct iwl_drv *iwl_drv_start(struct iwl_trans *trans)
1623 {
1624         struct iwl_drv *drv;
1625         int ret;
1626
1627         drv = kzalloc(sizeof(*drv), GFP_KERNEL);
1628         if (!drv) {
1629                 ret = -ENOMEM;
1630                 goto err;
1631         }
1632
1633         drv->trans = trans;
1634         drv->dev = trans->dev;
1635
1636         init_completion(&drv->request_firmware_complete);
1637         INIT_LIST_HEAD(&drv->list);
1638
1639         iwl_dbg_tlv_load_bin(drv->trans->dev, drv->trans);
1640
1641 #ifdef CONFIG_IWLWIFI_DEBUGFS
1642         /* Create the device debugfs entries. */
1643         drv->dbgfs_drv = debugfs_create_dir(dev_name(trans->dev),
1644                                             iwl_dbgfs_root);
1645
1646         /* Create transport layer debugfs dir */
1647         drv->trans->dbgfs_dir = debugfs_create_dir("trans", drv->dbgfs_drv);
1648 #endif
1649
1650         ret = iwl_request_firmware(drv, true);
1651         if (ret) {
1652                 IWL_ERR(trans, "Couldn't request the fw\n");
1653                 goto err_fw;
1654         }
1655
1656         return drv;
1657
1658 err_fw:
1659 #ifdef CONFIG_IWLWIFI_DEBUGFS
1660         debugfs_remove_recursive(drv->dbgfs_drv);
1661         iwl_dbg_tlv_free(drv->trans);
1662 #endif
1663         kfree(drv);
1664 err:
1665         return ERR_PTR(ret);
1666 }
1667
1668 void iwl_drv_stop(struct iwl_drv *drv)
1669 {
1670         wait_for_completion(&drv->request_firmware_complete);
1671
1672         _iwl_op_mode_stop(drv);
1673
1674         iwl_dealloc_ucode(drv);
1675
1676         mutex_lock(&iwlwifi_opmode_table_mtx);
1677         /*
1678          * List is empty (this item wasn't added)
1679          * when firmware loading failed -- in that
1680          * case we can't remove it from any list.
1681          */
1682         if (!list_empty(&drv->list))
1683                 list_del(&drv->list);
1684         mutex_unlock(&iwlwifi_opmode_table_mtx);
1685
1686 #ifdef CONFIG_IWLWIFI_DEBUGFS
1687         drv->trans->ops->debugfs_cleanup(drv->trans);
1688
1689         debugfs_remove_recursive(drv->dbgfs_drv);
1690 #endif
1691
1692         iwl_dbg_tlv_free(drv->trans);
1693
1694         kfree(drv);
1695 }
1696
1697
1698 /* shared module parameters */
1699 struct iwl_mod_params iwlwifi_mod_params = {
1700         .fw_restart = true,
1701         .bt_coex_active = true,
1702         .power_level = IWL_POWER_INDEX_1,
1703         .uapsd_disable = IWL_DISABLE_UAPSD_BSS | IWL_DISABLE_UAPSD_P2P_CLIENT,
1704         /* the rest are 0 by default */
1705 };
1706 IWL_EXPORT_SYMBOL(iwlwifi_mod_params);
1707
1708 int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops)
1709 {
1710         int i;
1711         struct iwl_drv *drv;
1712         struct iwlwifi_opmode_table *op;
1713
1714         mutex_lock(&iwlwifi_opmode_table_mtx);
1715         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1716                 op = &iwlwifi_opmode_table[i];
1717                 if (strcmp(op->name, name))
1718                         continue;
1719                 op->ops = ops;
1720                 /* TODO: need to handle exceptional case */
1721                 list_for_each_entry(drv, &op->drv, list)
1722                         drv->op_mode = _iwl_op_mode_start(drv, op);
1723
1724                 mutex_unlock(&iwlwifi_opmode_table_mtx);
1725                 return 0;
1726         }
1727         mutex_unlock(&iwlwifi_opmode_table_mtx);
1728         return -EIO;
1729 }
1730 IWL_EXPORT_SYMBOL(iwl_opmode_register);
1731
1732 void iwl_opmode_deregister(const char *name)
1733 {
1734         int i;
1735         struct iwl_drv *drv;
1736
1737         mutex_lock(&iwlwifi_opmode_table_mtx);
1738         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1739                 if (strcmp(iwlwifi_opmode_table[i].name, name))
1740                         continue;
1741                 iwlwifi_opmode_table[i].ops = NULL;
1742
1743                 /* call the stop routine for all devices */
1744                 list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list)
1745                         _iwl_op_mode_stop(drv);
1746
1747                 mutex_unlock(&iwlwifi_opmode_table_mtx);
1748                 return;
1749         }
1750         mutex_unlock(&iwlwifi_opmode_table_mtx);
1751 }
1752 IWL_EXPORT_SYMBOL(iwl_opmode_deregister);
1753
1754 static int __init iwl_drv_init(void)
1755 {
1756         int i, err;
1757
1758         mutex_init(&iwlwifi_opmode_table_mtx);
1759
1760         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++)
1761                 INIT_LIST_HEAD(&iwlwifi_opmode_table[i].drv);
1762
1763         pr_info(DRV_DESCRIPTION "\n");
1764         pr_info(DRV_COPYRIGHT "\n");
1765
1766 #ifdef CONFIG_IWLWIFI_DEBUGFS
1767         /* Create the root of iwlwifi debugfs subsystem. */
1768         iwl_dbgfs_root = debugfs_create_dir(DRV_NAME, NULL);
1769 #endif
1770
1771         err = iwl_pci_register_driver();
1772         if (err)
1773                 goto cleanup_debugfs;
1774
1775         return 0;
1776
1777 cleanup_debugfs:
1778 #ifdef CONFIG_IWLWIFI_DEBUGFS
1779         debugfs_remove_recursive(iwl_dbgfs_root);
1780 #endif
1781         return err;
1782 }
1783 module_init(iwl_drv_init);
1784
1785 static void __exit iwl_drv_exit(void)
1786 {
1787         iwl_pci_unregister_driver();
1788
1789 #ifdef CONFIG_IWLWIFI_DEBUGFS
1790         debugfs_remove_recursive(iwl_dbgfs_root);
1791 #endif
1792 }
1793 module_exit(iwl_drv_exit);
1794
1795 #ifdef CONFIG_IWLWIFI_DEBUG
1796 module_param_named(debug, iwlwifi_mod_params.debug_level, uint, 0644);
1797 MODULE_PARM_DESC(debug, "debug output mask");
1798 #endif
1799
1800 module_param_named(swcrypto, iwlwifi_mod_params.swcrypto, int, 0444);
1801 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1802 module_param_named(11n_disable, iwlwifi_mod_params.disable_11n, uint, 0444);
1803 MODULE_PARM_DESC(11n_disable,
1804         "disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX");
1805 module_param_named(amsdu_size, iwlwifi_mod_params.amsdu_size, int, 0444);
1806 MODULE_PARM_DESC(amsdu_size,
1807                  "amsdu size 0: 12K for multi Rx queue devices, 2K for 22560 devices, "
1808                  "4K for other devices 1:4K 2:8K 3:12K 4: 2K (default 0)");
1809 module_param_named(fw_restart, iwlwifi_mod_params.fw_restart, bool, 0444);
1810 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error (default true)");
1811
1812 module_param_named(antenna_coupling, iwlwifi_mod_params.antenna_coupling,
1813                    int, 0444);
1814 MODULE_PARM_DESC(antenna_coupling,
1815                  "specify antenna coupling in dB (default: 0 dB)");
1816
1817 module_param_named(nvm_file, iwlwifi_mod_params.nvm_file, charp, 0444);
1818 MODULE_PARM_DESC(nvm_file, "NVM file name");
1819
1820 module_param_named(lar_disable, iwlwifi_mod_params.lar_disable, bool, 0444);
1821 MODULE_PARM_DESC(lar_disable, "disable LAR functionality (default: N)");
1822
1823 module_param_named(uapsd_disable, iwlwifi_mod_params.uapsd_disable, uint, 0644);
1824 MODULE_PARM_DESC(uapsd_disable,
1825                  "disable U-APSD functionality bitmap 1: BSS 2: P2P Client (default: 3)");
1826 module_param_named(enable_ini, iwlwifi_mod_params.enable_ini,
1827                    bool, S_IRUGO | S_IWUSR);
1828 MODULE_PARM_DESC(enable_ini,
1829                  "Enable debug INI TLV FW debug infrastructure (default: 0");
1830
1831 /*
1832  * set bt_coex_active to true, uCode will do kill/defer
1833  * every time the priority line is asserted (BT is sending signals on the
1834  * priority line in the PCIx).
1835  * set bt_coex_active to false, uCode will ignore the BT activity and
1836  * perform the normal operation
1837  *
1838  * User might experience transmit issue on some platform due to WiFi/BT
1839  * co-exist problem. The possible behaviors are:
1840  *   Able to scan and finding all the available AP
1841  *   Not able to associate with any AP
1842  * On those platforms, WiFi communication can be restored by set
1843  * "bt_coex_active" module parameter to "false"
1844  *
1845  * default: bt_coex_active = true (BT_COEX_ENABLE)
1846  */
1847 module_param_named(bt_coex_active, iwlwifi_mod_params.bt_coex_active,
1848                    bool, 0444);
1849 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1850
1851 module_param_named(led_mode, iwlwifi_mod_params.led_mode, int, 0444);
1852 MODULE_PARM_DESC(led_mode, "0=system default, "
1853                 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1854
1855 module_param_named(power_save, iwlwifi_mod_params.power_save, bool, 0444);
1856 MODULE_PARM_DESC(power_save,
1857                  "enable WiFi power management (default: disable)");
1858
1859 module_param_named(power_level, iwlwifi_mod_params.power_level, int, 0444);
1860 MODULE_PARM_DESC(power_level,
1861                  "default power save level (range from 1 - 5, default: 1)");
1862
1863 module_param_named(fw_monitor, iwlwifi_mod_params.fw_monitor, bool, 0444);
1864 MODULE_PARM_DESC(fw_monitor,
1865                  "firmware monitor - to debug FW (default: false - needs lots of memory)");
1866
1867 module_param_named(disable_11ac, iwlwifi_mod_params.disable_11ac, bool, 0444);
1868 MODULE_PARM_DESC(disable_11ac, "Disable VHT capabilities (default: false)");
1869
1870 module_param_named(remove_when_gone,
1871                    iwlwifi_mod_params.remove_when_gone, bool,
1872                    0444);
1873 MODULE_PARM_DESC(remove_when_gone,
1874                  "Remove dev from PCIe bus if it is deemed inaccessible (default: false)");
1875
1876 module_param_named(disable_11ax, iwlwifi_mod_params.disable_11ax, bool,
1877                    S_IRUGO);
1878 MODULE_PARM_DESC(disable_11ax, "Disable HE capabilities (default: false)");