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  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of version 2 of the GNU General Public License as
  14  * published by the Free Software Foundation.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  24  * USA
  25  *
  26  * The full GNU General Public License is included in this distribution
  27  * in the file called COPYING.
  28  *
  29  * Contact Information:
  30  *  Intel Linux Wireless <linuxwifi@intel.com>
  31  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  32  *
  33  * BSD LICENSE
  34  *
  35  * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
  36  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  37  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  38  * All rights reserved.
  39  *
  40  * Redistribution and use in source and binary forms, with or without
  41  * modification, are permitted provided that the following conditions
  42  * are met:
  43  *
  44  *  * Redistributions of source code must retain the above copyright
  45  *    notice, this list of conditions and the following disclaimer.
  46  *  * Redistributions in binary form must reproduce the above copyright
  47  *    notice, this list of conditions and the following disclaimer in
  48  *    the documentation and/or other materials provided with the
  49  *    distribution.
  50  *  * Neither the name Intel Corporation nor the names of its
  51  *    contributors may be used to endorse or promote products derived
  52  *    from this software without specific prior written permission.
  53  *
  54  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  55  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  56  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  57  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  58  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  59  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  60  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  61  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  62  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  63  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  64  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  65  *
  66  *****************************************************************************/
  67 #include <linux/completion.h>
  68 #include <linux/dma-mapping.h>
  69 #include <linux/firmware.h>
  70 #include <linux/module.h>
  71 #include <linux/vmalloc.h>
  72
  73 #include "iwl-drv.h"
  74 #include "iwl-csr.h"
  75 #include "iwl-debug.h"
  76 #include "iwl-trans.h"
  77 #include "iwl-op-mode.h"
  78 #include "iwl-agn-hw.h"
  79 #include "fw/img.h"
  80 #include "iwl-config.h"
  81 #include "iwl-modparams.h"
  82
  83 /******************************************************************************
  84  *
  85  * module boiler plate
  86  *
  87  ******************************************************************************/
  88
  89 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi driver for Linux"
  90 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  91 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  92 MODULE_LICENSE("GPL");
  93
  94 #ifdef CONFIG_IWLWIFI_DEBUGFS
  95 static struct dentry *iwl_dbgfs_root;
  96 #endif
  97
  98 /**
  99  * struct iwl_drv - drv common data
 100  * @list: list of drv structures using this opmode
 101  * @fw: the iwl_fw structure
 102  * @op_mode: the running op_mode
 103  * @trans: transport layer
 104  * @dev: for debug prints only
 105  * @fw_index: firmware revision to try loading
 106  * @firmware_name: composite filename of ucode file to load
 107  * @request_firmware_complete: the firmware has been obtained from user space
 108  */
 109 struct iwl_drv {
 110         struct list_head list;
 111         struct iwl_fw fw;
 112
 113         struct iwl_op_mode *op_mode;
 114         struct iwl_trans *trans;
 115         struct device *dev;
 116
 117         int fw_index;                   /* firmware we're trying to load */
 118         char firmware_name[64];         /* name of firmware file to load */
 119
 120         struct completion request_firmware_complete;
 121
 122 #ifdef CONFIG_IWLWIFI_DEBUGFS
 123         struct dentry *dbgfs_drv;
 124         struct dentry *dbgfs_trans;
 125         struct dentry *dbgfs_op_mode;
 126 #endif
 127 };
 128
 129 enum {
 130         DVM_OP_MODE,
 131         MVM_OP_MODE,
 132 };
 133
 134 /* Protects the table contents, i.e. the ops pointer & drv list */
 135 static struct mutex iwlwifi_opmode_table_mtx;
 136 static struct iwlwifi_opmode_table {
 137         const char *name;                       /* name: iwldvm, iwlmvm, etc */
 138         const struct iwl_op_mode_ops *ops;      /* pointer to op_mode ops */
 139         struct list_head drv;           /* list of devices using this op_mode */
 140 } iwlwifi_opmode_table[] = {            /* ops set when driver is initialized */
 141         [DVM_OP_MODE] = { .name = "iwldvm", .ops = NULL },
 142         [MVM_OP_MODE] = { .name = "iwlmvm", .ops = NULL },
 143 };
 144
 145 #define IWL_DEFAULT_SCAN_CHANNELS 40
 146
 147 /*
 148  * struct fw_sec: Just for the image parsing process.
 149  * For the fw storage we are using struct fw_desc.
 150  */
 151 struct fw_sec {
 152         const void *data;               /* the sec data */
 153         size_t size;                    /* section size */
 154         u32 offset;                     /* offset of writing in the device */
 155 };
 156
 157 static void iwl_free_fw_desc(struct iwl_drv *drv, struct fw_desc *desc)
 158 {
 159         vfree(desc->data);
 160         desc->data = NULL;
 161         desc->len = 0;
 162 }
 163
 164 static void iwl_free_fw_img(struct iwl_drv *drv, struct fw_img *img)
 165 {
 166         int i;
 167         for (i = 0; i < img->num_sec; i++)
 168                 iwl_free_fw_desc(drv, &img->sec[i]);
 169         kfree(img->sec);
 170 }
 171
 172 static void iwl_dealloc_ucode(struct iwl_drv *drv)
 173 {
 174         int i;
 175
 176         kfree(drv->fw.dbg_dest_tlv);
 177         for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_conf_tlv); i++)
 178                 kfree(drv->fw.dbg_conf_tlv[i]);
 179         for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_trigger_tlv); i++)
 180                 kfree(drv->fw.dbg_trigger_tlv[i]);
 181         kfree(drv->fw.dbg_mem_tlv);
 182         kfree(drv->fw.iml);
 183
 184         for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
 185                 iwl_free_fw_img(drv, drv->fw.img + i);
 186
 187         /* clear the data for the aborted load case */
 188         memset(&drv->fw, 0, sizeof(drv->fw));
 189 }
 190
 191 static int iwl_alloc_fw_desc(struct iwl_drv *drv, struct fw_desc *desc,
 192                              struct fw_sec *sec)
 193 {
 194         void *data;
 195
 196         desc->data = NULL;
 197
 198         if (!sec || !sec->size)
 199                 return -EINVAL;
 200
 201         data = vmalloc(sec->size);
 202         if (!data)
 203                 return -ENOMEM;
 204
 205         desc->len = sec->size;
 206         desc->offset = sec->offset;
 207         memcpy(data, sec->data, desc->len);
 208         desc->data = data;
 209
 210         return 0;
 211 }
 212
 213 static void iwl_req_fw_callback(const struct firmware *ucode_raw,
 214                                 void *context);
 215
 216 static int iwl_request_firmware(struct iwl_drv *drv, bool first)
 217 {
 218         const struct iwl_cfg *cfg = drv->trans->cfg;
 219         char tag[8];
 220         const char *fw_pre_name;
 221
 222         if (drv->trans->cfg->device_family == IWL_DEVICE_FAMILY_9000 &&
 223             (CSR_HW_REV_STEP(drv->trans->hw_rev) == SILICON_B_STEP ||
 224              CSR_HW_REV_STEP(drv->trans->hw_rev) == SILICON_C_STEP))
 225                 fw_pre_name = cfg->fw_name_pre_b_or_c_step;
 226         else if (drv->trans->cfg->integrated &&
 227                  CSR_HW_RFID_STEP(drv->trans->hw_rf_id) == SILICON_B_STEP &&
 228                  cfg->fw_name_pre_rf_next_step)
 229                 fw_pre_name = cfg->fw_name_pre_rf_next_step;
 230         else
 231                 fw_pre_name = cfg->fw_name_pre;
 232
 233         if (first) {
 234                 drv->fw_index = cfg->ucode_api_max;
 235                 sprintf(tag, "%d", drv->fw_index);
 236         } else {
 237                 drv->fw_index--;
 238                 sprintf(tag, "%d", drv->fw_index);
 239         }
 240
 241         if (drv->fw_index < cfg->ucode_api_min) {
 242                 IWL_ERR(drv, "no suitable firmware found!\n");
 243
 244                 if (cfg->ucode_api_min == cfg->ucode_api_max) {
 245                         IWL_ERR(drv, "%s%d is required\n", fw_pre_name,
 246                                 cfg->ucode_api_max);
 247                 } else {
 248                         IWL_ERR(drv, "minimum version required: %s%d\n",
 249                                 fw_pre_name,
 250                                 cfg->ucode_api_min);
 251                         IWL_ERR(drv, "maximum version supported: %s%d\n",
 252                                 fw_pre_name,
 253                                 cfg->ucode_api_max);
 254                 }
 255
 256                 IWL_ERR(drv,
 257                         "check /*(DEBLOBBED)*/\n");
 258                 return -ENOENT;
 259         }
 260
 261         snprintf(drv->firmware_name, sizeof(drv->firmware_name), "/*(DEBLOBBED)*/",
 262                  fw_pre_name, tag);
 263
 264         IWL_DEBUG_INFO(drv, "attempting to load firmware '%s'\n",
 265                        drv->firmware_name);
 266
 267         return reject_firmware_nowait(THIS_MODULE, 1, drv->firmware_name,
 268                                        drv->trans->dev,
 269                                        GFP_KERNEL, drv, iwl_req_fw_callback);
 270 }
 271
 272 struct fw_img_parsing {
 273         struct fw_sec *sec;
 274         int sec_counter;
 275 };
 276
 277 /*
 278  * struct fw_sec_parsing: to extract fw section and it's offset from tlv
 279  */
 280 struct fw_sec_parsing {
 281         __le32 offset;
 282         const u8 data[];
 283 } __packed;
 284
 285 /**
 286  * struct iwl_tlv_calib_data - parse the default calib data from TLV
 287  *
 288  * @ucode_type: the uCode to which the following default calib relates.
 289  * @calib: default calibrations.
 290  */
 291 struct iwl_tlv_calib_data {
 292         __le32 ucode_type;
 293         struct iwl_tlv_calib_ctrl calib;
 294 } __packed;
 295
 296 struct iwl_firmware_pieces {
 297         struct fw_img_parsing img[IWL_UCODE_TYPE_MAX];
 298
 299         u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
 300         u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
 301
 302         /* FW debug data parsed for driver usage */
 303         bool dbg_dest_tlv_init;
 304         u8 *dbg_dest_ver;
 305         union {
 306                 struct iwl_fw_dbg_dest_tlv *dbg_dest_tlv;
 307                 struct iwl_fw_dbg_dest_tlv_v1 *dbg_dest_tlv_v1;
 308         };
 309         struct iwl_fw_dbg_conf_tlv *dbg_conf_tlv[FW_DBG_CONF_MAX];
 310         size_t dbg_conf_tlv_len[FW_DBG_CONF_MAX];
 311         struct iwl_fw_dbg_trigger_tlv *dbg_trigger_tlv[FW_DBG_TRIGGER_MAX];
 312         size_t dbg_trigger_tlv_len[FW_DBG_TRIGGER_MAX];
 313         struct iwl_fw_dbg_mem_seg_tlv *dbg_mem_tlv;
 314         size_t n_dbg_mem_tlv;
 315 };
 316
 317 /*
 318  * These functions are just to extract uCode section data from the pieces
 319  * structure.
 320  */
 321 static struct fw_sec *get_sec(struct iwl_firmware_pieces *pieces,
 322                               enum iwl_ucode_type type,
 323                               int  sec)
 324 {
 325         return &pieces->img[type].sec[sec];
 326 }
 327
 328 static void alloc_sec_data(struct iwl_firmware_pieces *pieces,
 329                            enum iwl_ucode_type type,
 330                            int sec)
 331 {
 332         struct fw_img_parsing *img = &pieces->img[type];
 333         struct fw_sec *sec_memory;
 334         int size = sec + 1;
 335         size_t alloc_size = sizeof(*img->sec) * size;
 336
 337         if (img->sec && img->sec_counter >= size)
 338                 return;
 339
 340         sec_memory = krealloc(img->sec, alloc_size, GFP_KERNEL);
 341         if (!sec_memory)
 342                 return;
 343
 344         img->sec = sec_memory;
 345         img->sec_counter = size;
 346 }
 347
 348 static void set_sec_data(struct iwl_firmware_pieces *pieces,
 349                          enum iwl_ucode_type type,
 350                          int sec,
 351                          const void *data)
 352 {
 353         alloc_sec_data(pieces, type, sec);
 354
 355         pieces->img[type].sec[sec].data = data;
 356 }
 357
 358 static void set_sec_size(struct iwl_firmware_pieces *pieces,
 359                          enum iwl_ucode_type type,
 360                          int sec,
 361                          size_t size)
 362 {
 363         alloc_sec_data(pieces, type, sec);
 364
 365         pieces->img[type].sec[sec].size = size;
 366 }
 367
 368 static size_t get_sec_size(struct iwl_firmware_pieces *pieces,
 369                            enum iwl_ucode_type type,
 370                            int sec)
 371 {
 372         return pieces->img[type].sec[sec].size;
 373 }
 374
 375 static void set_sec_offset(struct iwl_firmware_pieces *pieces,
 376                            enum iwl_ucode_type type,
 377                            int sec,
 378                            u32 offset)
 379 {
 380         alloc_sec_data(pieces, type, sec);
 381
 382         pieces->img[type].sec[sec].offset = offset;
 383 }
 384
 385 static int iwl_store_cscheme(struct iwl_fw *fw, const u8 *data, const u32 len)
 386 {
 387         int i, j;
 388         struct iwl_fw_cscheme_list *l = (struct iwl_fw_cscheme_list *)data;
 389         struct iwl_fw_cipher_scheme *fwcs;
 390
 391         if (len < sizeof(*l) ||
 392             len < sizeof(l->size) + l->size * sizeof(l->cs[0]))
 393                 return -EINVAL;
 394
 395         for (i = 0, j = 0; i < IWL_UCODE_MAX_CS && i < l->size; i++) {
 396                 fwcs = &l->cs[j];
 397
 398                 /* we skip schemes with zero cipher suite selector */
 399                 if (!fwcs->cipher)
 400                         continue;
 401
 402                 fw->cs[j++] = *fwcs;
 403         }
 404
 405         return 0;
 406 }
 407
 408 /*
 409  * Gets uCode section from tlv.
 410  */
 411 static int iwl_store_ucode_sec(struct iwl_firmware_pieces *pieces,
 412                                const void *data, enum iwl_ucode_type type,
 413                                int size)
 414 {
 415         struct fw_img_parsing *img;
 416         struct fw_sec *sec;
 417         struct fw_sec_parsing *sec_parse;
 418         size_t alloc_size;
 419
 420         if (WARN_ON(!pieces || !data || type >= IWL_UCODE_TYPE_MAX))
 421                 return -1;
 422
 423         sec_parse = (struct fw_sec_parsing *)data;
 424
 425         img = &pieces->img[type];
 426
 427         alloc_size = sizeof(*img->sec) * (img->sec_counter + 1);
 428         sec = krealloc(img->sec, alloc_size, GFP_KERNEL);
 429         if (!sec)
 430                 return -ENOMEM;
 431         img->sec = sec;
 432
 433         sec = &img->sec[img->sec_counter];
 434
 435         sec->offset = le32_to_cpu(sec_parse->offset);
 436         sec->data = sec_parse->data;
 437         sec->size = size - sizeof(sec_parse->offset);
 438
 439         ++img->sec_counter;
 440
 441         return 0;
 442 }
 443
 444 static int iwl_set_default_calib(struct iwl_drv *drv, const u8 *data)
 445 {
 446         struct iwl_tlv_calib_data *def_calib =
 447                                         (struct iwl_tlv_calib_data *)data;
 448         u32 ucode_type = le32_to_cpu(def_calib->ucode_type);
 449         if (ucode_type >= IWL_UCODE_TYPE_MAX) {
 450                 IWL_ERR(drv, "Wrong ucode_type %u for default calibration.\n",
 451                         ucode_type);
 452                 return -EINVAL;
 453         }
 454         drv->fw.default_calib[ucode_type].flow_trigger =
 455                 def_calib->calib.flow_trigger;
 456         drv->fw.default_calib[ucode_type].event_trigger =
 457                 def_calib->calib.event_trigger;
 458
 459         return 0;
 460 }
 461
 462 static void iwl_set_ucode_api_flags(struct iwl_drv *drv, const u8 *data,
 463                                     struct iwl_ucode_capabilities *capa)
 464 {
 465         const struct iwl_ucode_api *ucode_api = (void *)data;
 466         u32 api_index = le32_to_cpu(ucode_api->api_index);
 467         u32 api_flags = le32_to_cpu(ucode_api->api_flags);
 468         int i;
 469
 470         if (api_index >= DIV_ROUND_UP(NUM_IWL_UCODE_TLV_API, 32)) {
 471                 IWL_WARN(drv,
 472                          "api flags index %d larger than supported by driver\n",
 473                          api_index);
 474                 return;
 475         }
 476
 477         for (i = 0; i < 32; i++) {
 478                 if (api_flags & BIT(i))
 479                         __set_bit(i + 32 * api_index, capa->_api);
 480         }
 481 }
 482
 483 static void iwl_set_ucode_capabilities(struct iwl_drv *drv, const u8 *data,
 484                                        struct iwl_ucode_capabilities *capa)
 485 {
 486         const struct iwl_ucode_capa *ucode_capa = (void *)data;
 487         u32 api_index = le32_to_cpu(ucode_capa->api_index);
 488         u32 api_flags = le32_to_cpu(ucode_capa->api_capa);
 489         int i;
 490
 491         if (api_index >= DIV_ROUND_UP(NUM_IWL_UCODE_TLV_CAPA, 32)) {
 492                 IWL_WARN(drv,
 493                          "capa flags index %d larger than supported by driver\n",
 494                          api_index);
 495                 return;
 496         }
 497
 498         for (i = 0; i < 32; i++) {
 499                 if (api_flags & BIT(i))
 500                         __set_bit(i + 32 * api_index, capa->_capa);
 501         }
 502 }
 503
 504 static int iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
 505                                     const struct firmware *ucode_raw,
 506                                     struct iwl_firmware_pieces *pieces)
 507 {
 508         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
 509         u32 api_ver, hdr_size, build;
 510         char buildstr[25];
 511         const u8 *src;
 512
 513         drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
 514         api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
 515
 516         switch (api_ver) {
 517         default:
 518                 hdr_size = 28;
 519                 if (ucode_raw->size < hdr_size) {
 520                         IWL_ERR(drv, "File size too small!\n");
 521                         return -EINVAL;
 522                 }
 523                 build = le32_to_cpu(ucode->u.v2.build);
 524                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 525                              le32_to_cpu(ucode->u.v2.inst_size));
 526                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 527                              le32_to_cpu(ucode->u.v2.data_size));
 528                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 529                              le32_to_cpu(ucode->u.v2.init_size));
 530                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 531                              le32_to_cpu(ucode->u.v2.init_data_size));
 532                 src = ucode->u.v2.data;
 533                 break;
 534         case 0:
 535         case 1:
 536         case 2:
 537                 hdr_size = 24;
 538                 if (ucode_raw->size < hdr_size) {
 539                         IWL_ERR(drv, "File size too small!\n");
 540                         return -EINVAL;
 541                 }
 542                 build = 0;
 543                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 544                              le32_to_cpu(ucode->u.v1.inst_size));
 545                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 546                              le32_to_cpu(ucode->u.v1.data_size));
 547                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 548                              le32_to_cpu(ucode->u.v1.init_size));
 549                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 550                              le32_to_cpu(ucode->u.v1.init_data_size));
 551                 src = ucode->u.v1.data;
 552                 break;
 553         }
 554
 555         if (build)
 556                 sprintf(buildstr, " build %u", build);
 557         else
 558                 buildstr[0] = '\0';
 559
 560         snprintf(drv->fw.fw_version,
 561                  sizeof(drv->fw.fw_version),
 562                  "%u.%u.%u.%u%s",
 563                  IWL_UCODE_MAJOR(drv->fw.ucode_ver),
 564                  IWL_UCODE_MINOR(drv->fw.ucode_ver),
 565                  IWL_UCODE_API(drv->fw.ucode_ver),
 566                  IWL_UCODE_SERIAL(drv->fw.ucode_ver),
 567                  buildstr);
 568
 569         /* Verify size of file vs. image size info in file's header */
 570
 571         if (ucode_raw->size != hdr_size +
 572             get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) +
 573             get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) +
 574             get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) +
 575             get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)) {
 576
 577                 IWL_ERR(drv,
 578                         "uCode file size %d does not match expected size\n",
 579                         (int)ucode_raw->size);
 580                 return -EINVAL;
 581         }
 582
 583
 584         set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, src);
 585         src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST);
 586         set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 587                        IWLAGN_RTC_INST_LOWER_BOUND);
 588         set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, src);
 589         src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA);
 590         set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 591                        IWLAGN_RTC_DATA_LOWER_BOUND);
 592         set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, src);
 593         src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST);
 594         set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 595                        IWLAGN_RTC_INST_LOWER_BOUND);
 596         set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, src);
 597         src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA);
 598         set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 599                        IWLAGN_RTC_DATA_LOWER_BOUND);
 600         return 0;
 601 }
 602
 603 static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
 604                                 const struct firmware *ucode_raw,
 605                                 struct iwl_firmware_pieces *pieces,
 606                                 struct iwl_ucode_capabilities *capa,
 607                                 bool *usniffer_images)
 608 {
 609         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
 610         struct iwl_ucode_tlv *tlv;
 611         size_t len = ucode_raw->size;
 612         const u8 *data;
 613         u32 tlv_len;
 614         u32 usniffer_img;
 615         enum iwl_ucode_tlv_type tlv_type;
 616         const u8 *tlv_data;
 617         char buildstr[25];
 618         u32 build, paging_mem_size;
 619         int num_of_cpus;
 620         bool usniffer_req = false;
 621
 622         if (len < sizeof(*ucode)) {
 623                 IWL_ERR(drv, "uCode has invalid length: %zd\n", len);
 624                 return -EINVAL;
 625         }
 626
 627         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
 628                 IWL_ERR(drv, "invalid uCode magic: 0X%x\n",
 629                         le32_to_cpu(ucode->magic));
 630                 return -EINVAL;
 631         }
 632
 633         drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
 634         memcpy(drv->fw.human_readable, ucode->human_readable,
 635                sizeof(drv->fw.human_readable));
 636         build = le32_to_cpu(ucode->build);
 637
 638         if (build)
 639                 sprintf(buildstr, " build %u", build);
 640         else
 641                 buildstr[0] = '\0';
 642
 643         snprintf(drv->fw.fw_version,
 644                  sizeof(drv->fw.fw_version),
 645                  "%u.%u.%u.%u%s",
 646                  IWL_UCODE_MAJOR(drv->fw.ucode_ver),
 647                  IWL_UCODE_MINOR(drv->fw.ucode_ver),
 648                  IWL_UCODE_API(drv->fw.ucode_ver),
 649                  IWL_UCODE_SERIAL(drv->fw.ucode_ver),
 650                  buildstr);
 651
 652         data = ucode->data;
 653
 654         len -= sizeof(*ucode);
 655
 656         while (len >= sizeof(*tlv)) {
 657                 len -= sizeof(*tlv);
 658                 tlv = (void *)data;
 659
 660                 tlv_len = le32_to_cpu(tlv->length);
 661                 tlv_type = le32_to_cpu(tlv->type);
 662                 tlv_data = tlv->data;
 663
 664                 if (len < tlv_len) {
 665                         IWL_ERR(drv, "invalid TLV len: %zd/%u\n",
 666                                 len, tlv_len);
 667                         return -EINVAL;
 668                 }
 669                 len -= ALIGN(tlv_len, 4);
 670                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
 671
 672                 switch (tlv_type) {
 673                 case IWL_UCODE_TLV_INST:
 674                         set_sec_data(pieces, IWL_UCODE_REGULAR,
 675                                      IWL_UCODE_SECTION_INST, tlv_data);
 676                         set_sec_size(pieces, IWL_UCODE_REGULAR,
 677                                      IWL_UCODE_SECTION_INST, tlv_len);
 678                         set_sec_offset(pieces, IWL_UCODE_REGULAR,
 679                                        IWL_UCODE_SECTION_INST,
 680                                        IWLAGN_RTC_INST_LOWER_BOUND);
 681                         break;
 682                 case IWL_UCODE_TLV_DATA:
 683                         set_sec_data(pieces, IWL_UCODE_REGULAR,
 684                                      IWL_UCODE_SECTION_DATA, tlv_data);
 685                         set_sec_size(pieces, IWL_UCODE_REGULAR,
 686                                      IWL_UCODE_SECTION_DATA, tlv_len);
 687                         set_sec_offset(pieces, IWL_UCODE_REGULAR,
 688                                        IWL_UCODE_SECTION_DATA,
 689                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 690                         break;
 691                 case IWL_UCODE_TLV_INIT:
 692                         set_sec_data(pieces, IWL_UCODE_INIT,
 693                                      IWL_UCODE_SECTION_INST, tlv_data);
 694                         set_sec_size(pieces, IWL_UCODE_INIT,
 695                                      IWL_UCODE_SECTION_INST, tlv_len);
 696                         set_sec_offset(pieces, IWL_UCODE_INIT,
 697                                        IWL_UCODE_SECTION_INST,
 698                                        IWLAGN_RTC_INST_LOWER_BOUND);
 699                         break;
 700                 case IWL_UCODE_TLV_INIT_DATA:
 701                         set_sec_data(pieces, IWL_UCODE_INIT,
 702                                      IWL_UCODE_SECTION_DATA, tlv_data);
 703                         set_sec_size(pieces, IWL_UCODE_INIT,
 704                                      IWL_UCODE_SECTION_DATA, tlv_len);
 705                         set_sec_offset(pieces, IWL_UCODE_INIT,
 706                                        IWL_UCODE_SECTION_DATA,
 707                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 708                         break;
 709                 case IWL_UCODE_TLV_BOOT:
 710                         IWL_ERR(drv, "Found unexpected BOOT ucode\n");
 711                         break;
 712                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
 713                         if (tlv_len != sizeof(u32))
 714                                 goto invalid_tlv_len;
 715                         capa->max_probe_length =
 716                                         le32_to_cpup((__le32 *)tlv_data);
 717                         break;
 718                 case IWL_UCODE_TLV_PAN:
 719                         if (tlv_len)
 720                                 goto invalid_tlv_len;
 721                         capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
 722                         break;
 723                 case IWL_UCODE_TLV_FLAGS:
 724                         /* must be at least one u32 */
 725                         if (tlv_len < sizeof(u32))
 726                                 goto invalid_tlv_len;
 727                         /* and a proper number of u32s */
 728                         if (tlv_len % sizeof(u32))
 729                                 goto invalid_tlv_len;
 730                         /*
 731                          * This driver only reads the first u32 as
 732                          * right now no more features are defined,
 733                          * if that changes then either the driver
 734                          * will not work with the new firmware, or
 735                          * it'll not take advantage of new features.
 736                          */
 737                         capa->flags = le32_to_cpup((__le32 *)tlv_data);
 738                         break;
 739                 case IWL_UCODE_TLV_API_CHANGES_SET:
 740                         if (tlv_len != sizeof(struct iwl_ucode_api))
 741                                 goto invalid_tlv_len;
 742                         iwl_set_ucode_api_flags(drv, tlv_data, capa);
 743                         break;
 744                 case IWL_UCODE_TLV_ENABLED_CAPABILITIES:
 745                         if (tlv_len != sizeof(struct iwl_ucode_capa))
 746                                 goto invalid_tlv_len;
 747                         iwl_set_ucode_capabilities(drv, tlv_data, capa);
 748                         break;
 749                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
 750                         if (tlv_len != sizeof(u32))
 751                                 goto invalid_tlv_len;
 752                         pieces->init_evtlog_ptr =
 753                                         le32_to_cpup((__le32 *)tlv_data);
 754                         break;
 755                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
 756                         if (tlv_len != sizeof(u32))
 757                                 goto invalid_tlv_len;
 758                         pieces->init_evtlog_size =
 759                                         le32_to_cpup((__le32 *)tlv_data);
 760                         break;
 761                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
 762                         if (tlv_len != sizeof(u32))
 763                                 goto invalid_tlv_len;
 764                         pieces->init_errlog_ptr =
 765                                         le32_to_cpup((__le32 *)tlv_data);
 766                         break;
 767                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
 768                         if (tlv_len != sizeof(u32))
 769                                 goto invalid_tlv_len;
 770                         pieces->inst_evtlog_ptr =
 771                                         le32_to_cpup((__le32 *)tlv_data);
 772                         break;
 773                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
 774                         if (tlv_len != sizeof(u32))
 775                                 goto invalid_tlv_len;
 776                         pieces->inst_evtlog_size =
 777                                         le32_to_cpup((__le32 *)tlv_data);
 778                         break;
 779                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
 780                         if (tlv_len != sizeof(u32))
 781                                 goto invalid_tlv_len;
 782                         pieces->inst_errlog_ptr =
 783                                         le32_to_cpup((__le32 *)tlv_data);
 784                         break;
 785                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
 786                         if (tlv_len)
 787                                 goto invalid_tlv_len;
 788                         drv->fw.enhance_sensitivity_table = true;
 789                         break;
 790                 case IWL_UCODE_TLV_WOWLAN_INST:
 791                         set_sec_data(pieces, IWL_UCODE_WOWLAN,
 792                                      IWL_UCODE_SECTION_INST, tlv_data);
 793                         set_sec_size(pieces, IWL_UCODE_WOWLAN,
 794                                      IWL_UCODE_SECTION_INST, tlv_len);
 795                         set_sec_offset(pieces, IWL_UCODE_WOWLAN,
 796                                        IWL_UCODE_SECTION_INST,
 797                                        IWLAGN_RTC_INST_LOWER_BOUND);
 798                         break;
 799                 case IWL_UCODE_TLV_WOWLAN_DATA:
 800                         set_sec_data(pieces, IWL_UCODE_WOWLAN,
 801                                      IWL_UCODE_SECTION_DATA, tlv_data);
 802                         set_sec_size(pieces, IWL_UCODE_WOWLAN,
 803                                      IWL_UCODE_SECTION_DATA, tlv_len);
 804                         set_sec_offset(pieces, IWL_UCODE_WOWLAN,
 805                                        IWL_UCODE_SECTION_DATA,
 806                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 807                         break;
 808                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
 809                         if (tlv_len != sizeof(u32))
 810                                 goto invalid_tlv_len;
 811                         capa->standard_phy_calibration_size =
 812                                         le32_to_cpup((__le32 *)tlv_data);
 813                         break;
 814                 case IWL_UCODE_TLV_SEC_RT:
 815                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
 816                                             tlv_len);
 817                         drv->fw.type = IWL_FW_MVM;
 818                         break;
 819                 case IWL_UCODE_TLV_SEC_INIT:
 820                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
 821                                             tlv_len);
 822                         drv->fw.type = IWL_FW_MVM;
 823                         break;
 824                 case IWL_UCODE_TLV_SEC_WOWLAN:
 825                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
 826                                             tlv_len);
 827                         drv->fw.type = IWL_FW_MVM;
 828                         break;
 829                 case IWL_UCODE_TLV_DEF_CALIB:
 830                         if (tlv_len != sizeof(struct iwl_tlv_calib_data))
 831                                 goto invalid_tlv_len;
 832                         if (iwl_set_default_calib(drv, tlv_data))
 833                                 goto tlv_error;
 834                         break;
 835                 case IWL_UCODE_TLV_PHY_SKU:
 836                         if (tlv_len != sizeof(u32))
 837                                 goto invalid_tlv_len;
 838                         drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data);
 839                         drv->fw.valid_tx_ant = (drv->fw.phy_config &
 840                                                 FW_PHY_CFG_TX_CHAIN) >>
 841                                                 FW_PHY_CFG_TX_CHAIN_POS;
 842                         drv->fw.valid_rx_ant = (drv->fw.phy_config &
 843                                                 FW_PHY_CFG_RX_CHAIN) >>
 844                                                 FW_PHY_CFG_RX_CHAIN_POS;
 845                         break;
 846                 case IWL_UCODE_TLV_SECURE_SEC_RT:
 847                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
 848                                             tlv_len);
 849                         drv->fw.type = IWL_FW_MVM;
 850                         break;
 851                 case IWL_UCODE_TLV_SECURE_SEC_INIT:
 852                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
 853                                             tlv_len);
 854                         drv->fw.type = IWL_FW_MVM;
 855                         break;
 856                 case IWL_UCODE_TLV_SECURE_SEC_WOWLAN:
 857                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
 858                                             tlv_len);
 859                         drv->fw.type = IWL_FW_MVM;
 860                         break;
 861                 case IWL_UCODE_TLV_NUM_OF_CPU:
 862                         if (tlv_len != sizeof(u32))
 863                                 goto invalid_tlv_len;
 864                         num_of_cpus =
 865                                 le32_to_cpup((__le32 *)tlv_data);
 866
 867                         if (num_of_cpus == 2) {
 868                                 drv->fw.img[IWL_UCODE_REGULAR].is_dual_cpus =
 869                                         true;
 870                                 drv->fw.img[IWL_UCODE_INIT].is_dual_cpus =
 871                                         true;
 872                                 drv->fw.img[IWL_UCODE_WOWLAN].is_dual_cpus =
 873                                         true;
 874                         } else if ((num_of_cpus > 2) || (num_of_cpus < 1)) {
 875                                 IWL_ERR(drv, "Driver support upto 2 CPUs\n");
 876                                 return -EINVAL;
 877                         }
 878                         break;
 879                 case IWL_UCODE_TLV_CSCHEME:
 880                         if (iwl_store_cscheme(&drv->fw, tlv_data, tlv_len))
 881                                 goto invalid_tlv_len;
 882                         break;
 883                 case IWL_UCODE_TLV_N_SCAN_CHANNELS:
 884                         if (tlv_len != sizeof(u32))
 885                                 goto invalid_tlv_len;
 886                         capa->n_scan_channels =
 887                                 le32_to_cpup((__le32 *)tlv_data);
 888                         break;
 889                 case IWL_UCODE_TLV_FW_VERSION: {
 890                         __le32 *ptr = (void *)tlv_data;
 891                         u32 major, minor;
 892                         u8 local_comp;
 893
 894                         if (tlv_len != sizeof(u32) * 3)
 895                                 goto invalid_tlv_len;
 896
 897                         major = le32_to_cpup(ptr++);
 898                         minor = le32_to_cpup(ptr++);
 899                         local_comp = le32_to_cpup(ptr);
 900
 901                         if (major >= 35)
 902                                 snprintf(drv->fw.fw_version,
 903                                          sizeof(drv->fw.fw_version),
 904                                         "%u.%08x.%u", major, minor, local_comp);
 905                         else
 906                                 snprintf(drv->fw.fw_version,
 907                                          sizeof(drv->fw.fw_version),
 908                                         "%u.%u.%u", major, minor, local_comp);
 909                         break;
 910                         }
 911                 case IWL_UCODE_TLV_FW_DBG_DEST: {
 912                         struct iwl_fw_dbg_dest_tlv *dest = NULL;
 913                         struct iwl_fw_dbg_dest_tlv_v1 *dest_v1 = NULL;
 914                         u8 mon_mode;
 915
 916                         pieces->dbg_dest_ver = (u8 *)tlv_data;
 917                         if (*pieces->dbg_dest_ver == 1) {
 918                                 dest = (void *)tlv_data;
 919                         } else if (*pieces->dbg_dest_ver == 0) {
 920                                 dest_v1 = (void *)tlv_data;
 921                         } else {
 922                                 IWL_ERR(drv,
 923                                         "The version is %d, and it is invalid\n",
 924                                         *pieces->dbg_dest_ver);
 925                                 break;
 926                         }
 927
 928                         if (pieces->dbg_dest_tlv_init) {
 929                                 IWL_ERR(drv,
 930                                         "dbg destination ignored, already exists\n");
 931                                 break;
 932                         }
 933
 934                         pieces->dbg_dest_tlv_init = true;
 935
 936                         if (dest_v1) {
 937                                 pieces->dbg_dest_tlv_v1 = dest_v1;
 938                                 mon_mode = dest_v1->monitor_mode;
 939                         } else {
 940                                 pieces->dbg_dest_tlv = dest;
 941                                 mon_mode = dest->monitor_mode;
 942                         }
 943
 944                         IWL_INFO(drv, "Found debug destination: %s\n",
 945                                  get_fw_dbg_mode_string(mon_mode));
 946
 947                         drv->fw.dbg_dest_reg_num = (dest_v1) ?
 948                                 tlv_len -
 949                                 offsetof(struct iwl_fw_dbg_dest_tlv_v1,
 950                                          reg_ops) :
 951                                 tlv_len -
 952                                 offsetof(struct iwl_fw_dbg_dest_tlv,
 953                                          reg_ops);
 954
 955                         drv->fw.dbg_dest_reg_num /=
 956                                 sizeof(drv->fw.dbg_dest_tlv->reg_ops[0]);
 957
 958                         break;
 959                         }
 960                 case IWL_UCODE_TLV_FW_DBG_CONF: {
 961                         struct iwl_fw_dbg_conf_tlv *conf = (void *)tlv_data;
 962
 963                         if (!pieces->dbg_dest_tlv_init) {
 964                                 IWL_ERR(drv,
 965                                         "Ignore dbg config %d - no destination configured\n",
 966                                         conf->id);
 967                                 break;
 968                         }
 969
 970                         if (conf->id >= ARRAY_SIZE(drv->fw.dbg_conf_tlv)) {
 971                                 IWL_ERR(drv,
 972                                         "Skip unknown configuration: %d\n",
 973                                         conf->id);
 974                                 break;
 975                         }
 976
 977                         if (pieces->dbg_conf_tlv[conf->id]) {
 978                                 IWL_ERR(drv,
 979                                         "Ignore duplicate dbg config %d\n",
 980                                         conf->id);
 981                                 break;
 982                         }
 983
 984                         if (conf->usniffer)
 985                                 usniffer_req = true;
 986
 987                         IWL_INFO(drv, "Found debug configuration: %d\n",
 988                                  conf->id);
 989
 990                         pieces->dbg_conf_tlv[conf->id] = conf;
 991                         pieces->dbg_conf_tlv_len[conf->id] = tlv_len;
 992                         break;
 993                         }
 994                 case IWL_UCODE_TLV_FW_DBG_TRIGGER: {
 995                         struct iwl_fw_dbg_trigger_tlv *trigger =
 996                                 (void *)tlv_data;
 997                         u32 trigger_id = le32_to_cpu(trigger->id);
 998
 999                         if (trigger_id >= ARRAY_SIZE(drv->fw.dbg_trigger_tlv)) {
1000                                 IWL_ERR(drv,
1001                                         "Skip unknown trigger: %u\n",
1002                                         trigger->id);
1003                                 break;
1004                         }
1005
1006                         if (pieces->dbg_trigger_tlv[trigger_id]) {
1007                                 IWL_ERR(drv,
1008                                         "Ignore duplicate dbg trigger %u\n",
1009                                         trigger->id);
1010                                 break;
1011                         }
1012
1013                         IWL_INFO(drv, "Found debug trigger: %u\n", trigger->id);
1014
1015                         pieces->dbg_trigger_tlv[trigger_id] = trigger;
1016                         pieces->dbg_trigger_tlv_len[trigger_id] = tlv_len;
1017                         break;
1018                         }
1019                 case IWL_UCODE_TLV_FW_DBG_DUMP_LST: {
1020                         if (tlv_len != sizeof(u32)) {
1021                                 IWL_ERR(drv,
1022                                         "dbg lst mask size incorrect, skip\n");
1023                                 break;
1024                         }
1025
1026                         drv->fw.dbg_dump_mask =
1027                                 le32_to_cpup((__le32 *)tlv_data);
1028                         break;
1029                         }
1030                 case IWL_UCODE_TLV_SEC_RT_USNIFFER:
1031                         *usniffer_images = true;
1032                         iwl_store_ucode_sec(pieces, tlv_data,
1033                                             IWL_UCODE_REGULAR_USNIFFER,
1034                                             tlv_len);
1035                         break;
1036                 case IWL_UCODE_TLV_PAGING:
1037                         if (tlv_len != sizeof(u32))
1038                                 goto invalid_tlv_len;
1039                         paging_mem_size = le32_to_cpup((__le32 *)tlv_data);
1040
1041                         IWL_DEBUG_FW(drv,
1042                                      "Paging: paging enabled (size = %u bytes)\n",
1043                                      paging_mem_size);
1044
1045                         if (paging_mem_size > MAX_PAGING_IMAGE_SIZE) {
1046                                 IWL_ERR(drv,
1047                                         "Paging: driver supports up to %lu bytes for paging image\n",
1048                                         MAX_PAGING_IMAGE_SIZE);
1049                                 return -EINVAL;
1050                         }
1051
1052                         if (paging_mem_size & (FW_PAGING_SIZE - 1)) {
1053                                 IWL_ERR(drv,
1054                                         "Paging: image isn't multiple %lu\n",
1055                                         FW_PAGING_SIZE);
1056                                 return -EINVAL;
1057                         }
1058
1059                         drv->fw.img[IWL_UCODE_REGULAR].paging_mem_size =
1060                                 paging_mem_size;
1061                         usniffer_img = IWL_UCODE_REGULAR_USNIFFER;
1062                         drv->fw.img[usniffer_img].paging_mem_size =
1063                                 paging_mem_size;
1064                         break;
1065                 case IWL_UCODE_TLV_FW_GSCAN_CAPA:
1066                         /* ignored */
1067                         break;
1068                 case IWL_UCODE_TLV_FW_MEM_SEG: {
1069                         struct iwl_fw_dbg_mem_seg_tlv *dbg_mem =
1070                                 (void *)tlv_data;
1071                         u32 type;
1072                         size_t size;
1073                         struct iwl_fw_dbg_mem_seg_tlv *n;
1074
1075                         if (tlv_len != (sizeof(*dbg_mem)))
1076                                 goto invalid_tlv_len;
1077
1078                         type = le32_to_cpu(dbg_mem->data_type);
1079
1080                         IWL_DEBUG_INFO(drv, "Found debug memory segment: %u\n",
1081                                        dbg_mem->data_type);
1082
1083                         switch (type & FW_DBG_MEM_TYPE_MASK) {
1084                         case FW_DBG_MEM_TYPE_REGULAR:
1085                         case FW_DBG_MEM_TYPE_PRPH:
1086                                 /* we know how to handle these */
1087                                 break;
1088                         default:
1089                                 IWL_ERR(drv,
1090                                         "Found debug memory segment with invalid type: 0x%x\n",
1091                                         type);
1092                                 return -EINVAL;
1093                         }
1094
1095                         size = sizeof(*pieces->dbg_mem_tlv) *
1096                                (pieces->n_dbg_mem_tlv + 1);
1097                         n = krealloc(pieces->dbg_mem_tlv, size, GFP_KERNEL);
1098                         if (!n)
1099                                 return -ENOMEM;
1100                         pieces->dbg_mem_tlv = n;
1101                         pieces->dbg_mem_tlv[pieces->n_dbg_mem_tlv] = *dbg_mem;
1102                         pieces->n_dbg_mem_tlv++;
1103                         break;
1104                         }
1105                 case IWL_UCODE_TLV_IML: {
1106                         drv->fw.iml_len = tlv_len;
1107                         drv->fw.iml = kmemdup(tlv_data, tlv_len, GFP_KERNEL);
1108                         if (!drv->fw.iml)
1109                                 return -ENOMEM;
1110                         break;
1111                         }
1112                 default:
1113                         IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
1114                         break;
1115                 }
1116         }
1117
1118         if (!fw_has_capa(capa, IWL_UCODE_TLV_CAPA_USNIFFER_UNIFIED) &&
1119             usniffer_req && !*usniffer_images) {
1120                 IWL_ERR(drv,
1121                         "user selected to work with usniffer but usniffer image isn't available in ucode package\n");
1122                 return -EINVAL;
1123         }
1124
1125         if (len) {
1126                 IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
1127                 iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len);
1128                 return -EINVAL;
1129         }
1130
1131         return 0;
1132
1133  invalid_tlv_len:
1134         IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
1135  tlv_error:
1136         iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);
1137
1138         return -EINVAL;
1139 }
1140
1141 static int iwl_alloc_ucode(struct iwl_drv *drv,
1142                            struct iwl_firmware_pieces *pieces,
1143                            enum iwl_ucode_type type)
1144 {
1145         int i;
1146         struct fw_desc *sec;
1147
1148         sec = kcalloc(pieces->img[type].sec_counter, sizeof(*sec), GFP_KERNEL);
1149         if (!sec)
1150                 return -ENOMEM;
1151         drv->fw.img[type].sec = sec;
1152         drv->fw.img[type].num_sec = pieces->img[type].sec_counter;
1153
1154         for (i = 0; i < pieces->img[type].sec_counter; i++)
1155                 if (iwl_alloc_fw_desc(drv, &sec[i], get_sec(pieces, type, i)))
1156                         return -ENOMEM;
1157
1158         return 0;
1159 }
1160
1161 static int validate_sec_sizes(struct iwl_drv *drv,
1162                               struct iwl_firmware_pieces *pieces,
1163                               const struct iwl_cfg *cfg)
1164 {
1165         IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %zd\n",
1166                 get_sec_size(pieces, IWL_UCODE_REGULAR,
1167                              IWL_UCODE_SECTION_INST));
1168         IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %zd\n",
1169                 get_sec_size(pieces, IWL_UCODE_REGULAR,
1170                              IWL_UCODE_SECTION_DATA));
1171         IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %zd\n",
1172                 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST));
1173         IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %zd\n",
1174                 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA));
1175
1176         /* Verify that uCode images will fit in card's SRAM. */
1177         if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
1178             cfg->max_inst_size) {
1179                 IWL_ERR(drv, "uCode instr len %zd too large to fit in\n",
1180                         get_sec_size(pieces, IWL_UCODE_REGULAR,
1181                                      IWL_UCODE_SECTION_INST));
1182                 return -1;
1183         }
1184
1185         if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
1186             cfg->max_data_size) {
1187                 IWL_ERR(drv, "uCode data len %zd too large to fit in\n",
1188                         get_sec_size(pieces, IWL_UCODE_REGULAR,
1189                                      IWL_UCODE_SECTION_DATA));
1190                 return -1;
1191         }
1192
1193         if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) >
1194              cfg->max_inst_size) {
1195                 IWL_ERR(drv, "uCode init instr len %zd too large to fit in\n",
1196                         get_sec_size(pieces, IWL_UCODE_INIT,
1197                                      IWL_UCODE_SECTION_INST));
1198                 return -1;
1199         }
1200
1201         if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA) >
1202             cfg->max_data_size) {
1203                 IWL_ERR(drv, "uCode init data len %zd too large to fit in\n",
1204                         get_sec_size(pieces, IWL_UCODE_REGULAR,
1205                                      IWL_UCODE_SECTION_DATA));
1206                 return -1;
1207         }
1208         return 0;
1209 }
1210
1211 static struct iwl_op_mode *
1212 _iwl_op_mode_start(struct iwl_drv *drv, struct iwlwifi_opmode_table *op)
1213 {
1214         const struct iwl_op_mode_ops *ops = op->ops;
1215         struct dentry *dbgfs_dir = NULL;
1216         struct iwl_op_mode *op_mode = NULL;
1217
1218 #ifdef CONFIG_IWLWIFI_DEBUGFS
1219         drv->dbgfs_op_mode = debugfs_create_dir(op->name,
1220                                                 drv->dbgfs_drv);
1221         if (!drv->dbgfs_op_mode) {
1222                 IWL_ERR(drv,
1223                         "failed to create opmode debugfs directory\n");
1224                 return op_mode;
1225         }
1226         dbgfs_dir = drv->dbgfs_op_mode;
1227 #endif
1228
1229         op_mode = ops->start(drv->trans, drv->trans->cfg, &drv->fw, dbgfs_dir);
1230
1231 #ifdef CONFIG_IWLWIFI_DEBUGFS
1232         if (!op_mode) {
1233                 debugfs_remove_recursive(drv->dbgfs_op_mode);
1234                 drv->dbgfs_op_mode = NULL;
1235         }
1236 #endif
1237
1238         return op_mode;
1239 }
1240
1241 static void _iwl_op_mode_stop(struct iwl_drv *drv)
1242 {
1243         /* op_mode can be NULL if its start failed */
1244         if (drv->op_mode) {
1245                 iwl_op_mode_stop(drv->op_mode);
1246                 drv->op_mode = NULL;
1247
1248 #ifdef CONFIG_IWLWIFI_DEBUGFS
1249                 debugfs_remove_recursive(drv->dbgfs_op_mode);
1250                 drv->dbgfs_op_mode = NULL;
1251 #endif
1252         }
1253 }
1254
1255 /**
1256  * iwl_req_fw_callback - callback when firmware was loaded
1257  *
1258  * If loaded successfully, copies the firmware into buffers
1259  * for the card to fetch (via DMA).
1260  */
1261 static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
1262 {
1263         struct iwl_drv *drv = context;
1264         struct iwl_fw *fw = &drv->fw;
1265         struct iwl_ucode_header *ucode;
1266         struct iwlwifi_opmode_table *op;
1267         int err;
1268         struct iwl_firmware_pieces *pieces;
1269         const unsigned int api_max = drv->trans->cfg->ucode_api_max;
1270         const unsigned int api_min = drv->trans->cfg->ucode_api_min;
1271         size_t trigger_tlv_sz[FW_DBG_TRIGGER_MAX];
1272         u32 api_ver;
1273         int i;
1274         bool load_module = false;
1275         bool usniffer_images = false;
1276         bool failure = true;
1277
1278         fw->ucode_capa.max_probe_length = IWL_DEFAULT_MAX_PROBE_LENGTH;
1279         fw->ucode_capa.standard_phy_calibration_size =
1280                         IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1281         fw->ucode_capa.n_scan_channels = IWL_DEFAULT_SCAN_CHANNELS;
1282         /* dump all fw memory areas by default */
1283         fw->dbg_dump_mask = 0xffffffff;
1284
1285         pieces = kzalloc(sizeof(*pieces), GFP_KERNEL);
1286         if (!pieces)
1287                 goto out_free_fw;
1288
1289         if (!ucode_raw)
1290                 goto try_again;
1291
1292         IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
1293                        drv->firmware_name, ucode_raw->size);
1294
1295         /* Make sure that we got at least the API version number */
1296         if (ucode_raw->size < 4) {
1297                 IWL_ERR(drv, "File size way too small!\n");
1298                 goto try_again;
1299         }
1300
1301         /* Data from ucode file:  header followed by uCode images */
1302         ucode = (struct iwl_ucode_header *)ucode_raw->data;
1303
1304         if (ucode->ver)
1305                 err = iwl_parse_v1_v2_firmware(drv, ucode_raw, pieces);
1306         else
1307                 err = iwl_parse_tlv_firmware(drv, ucode_raw, pieces,
1308                                              &fw->ucode_capa, &usniffer_images);
1309
1310         if (err)
1311                 goto try_again;
1312
1313         if (fw_has_api(&drv->fw.ucode_capa, IWL_UCODE_TLV_API_NEW_VERSION))
1314                 api_ver = drv->fw.ucode_ver;
1315         else
1316                 api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
1317
1318         /*
1319          * api_ver should match the api version forming part of the
1320          * firmware filename ... but we don't check for that and only rely
1321          * on the API version read from firmware header from here on forward
1322          */
1323         if (api_ver < api_min || api_ver > api_max) {
1324                 IWL_ERR(drv,
1325                         "Driver unable to support your firmware API. "
1326                         "Driver supports v%u, firmware is v%u.\n",
1327                         api_max, api_ver);
1328                 goto try_again;
1329         }
1330
1331         /*
1332          * In mvm uCode there is no difference between data and instructions
1333          * sections.
1334          */
1335         if (fw->type == IWL_FW_DVM && validate_sec_sizes(drv, pieces,
1336                                                          drv->trans->cfg))
1337                 goto try_again;
1338
1339         /* Allocate ucode buffers for card's bus-master loading ... */
1340
1341         /* Runtime instructions and 2 copies of data:
1342          * 1) unmodified from disk
1343          * 2) backup cache for save/restore during power-downs
1344          */
1345         for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
1346                 if (iwl_alloc_ucode(drv, pieces, i))
1347                         goto out_free_fw;
1348
1349         if (pieces->dbg_dest_tlv_init) {
1350                 size_t dbg_dest_size = sizeof(*drv->fw.dbg_dest_tlv) +
1351                         sizeof(drv->fw.dbg_dest_tlv->reg_ops[0]) *
1352                         drv->fw.dbg_dest_reg_num;
1353
1354                 drv->fw.dbg_dest_tlv = kmalloc(dbg_dest_size, GFP_KERNEL);
1355
1356                 if (!drv->fw.dbg_dest_tlv)
1357                         goto out_free_fw;
1358
1359                 if (*pieces->dbg_dest_ver == 0) {
1360                         memcpy(drv->fw.dbg_dest_tlv, pieces->dbg_dest_tlv_v1,
1361                                dbg_dest_size);
1362                 } else {
1363                         struct iwl_fw_dbg_dest_tlv_v1 *dest_tlv =
1364                                 drv->fw.dbg_dest_tlv;
1365
1366                         dest_tlv->version = pieces->dbg_dest_tlv->version;
1367                         dest_tlv->monitor_mode =
1368                                 pieces->dbg_dest_tlv->monitor_mode;
1369                         dest_tlv->size_power =
1370                                 pieces->dbg_dest_tlv->size_power;
1371                         dest_tlv->wrap_count =
1372                                 pieces->dbg_dest_tlv->wrap_count;
1373                         dest_tlv->write_ptr_reg =
1374                                 pieces->dbg_dest_tlv->write_ptr_reg;
1375                         dest_tlv->base_shift =
1376                                 pieces->dbg_dest_tlv->base_shift;
1377                         memcpy(dest_tlv->reg_ops,
1378                                pieces->dbg_dest_tlv->reg_ops,
1379                                sizeof(drv->fw.dbg_dest_tlv->reg_ops[0]) *
1380                                drv->fw.dbg_dest_reg_num);
1381
1382                         /* In version 1 of the destination tlv, which is
1383                          * relevant for internal buffer exclusively,
1384                          * the base address is part of given with the length
1385                          * of the buffer, and the size shift is give instead of
1386                          * end shift. We now store these values in base_reg,
1387                          * and end shift, and when dumping the data we'll
1388                          * manipulate it for extracting both the length and
1389                          * base address */
1390                         dest_tlv->base_reg = pieces->dbg_dest_tlv->cfg_reg;
1391                         dest_tlv->end_shift =
1392                                 pieces->dbg_dest_tlv->size_shift;
1393                 }
1394         }
1395
1396         for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_conf_tlv); i++) {
1397                 if (pieces->dbg_conf_tlv[i]) {
1398                         drv->fw.dbg_conf_tlv_len[i] =
1399                                 pieces->dbg_conf_tlv_len[i];
1400                         drv->fw.dbg_conf_tlv[i] =
1401                                 kmemdup(pieces->dbg_conf_tlv[i],
1402                                         drv->fw.dbg_conf_tlv_len[i],
1403                                         GFP_KERNEL);
1404                         if (!drv->fw.dbg_conf_tlv[i])
1405                                 goto out_free_fw;
1406                 }
1407         }
1408
1409         memset(&trigger_tlv_sz, 0xff, sizeof(trigger_tlv_sz));
1410
1411         trigger_tlv_sz[FW_DBG_TRIGGER_MISSED_BEACONS] =
1412                 sizeof(struct iwl_fw_dbg_trigger_missed_bcon);
1413         trigger_tlv_sz[FW_DBG_TRIGGER_CHANNEL_SWITCH] = 0;
1414         trigger_tlv_sz[FW_DBG_TRIGGER_FW_NOTIF] =
1415                 sizeof(struct iwl_fw_dbg_trigger_cmd);
1416         trigger_tlv_sz[FW_DBG_TRIGGER_MLME] =
1417                 sizeof(struct iwl_fw_dbg_trigger_mlme);
1418         trigger_tlv_sz[FW_DBG_TRIGGER_STATS] =
1419                 sizeof(struct iwl_fw_dbg_trigger_stats);
1420         trigger_tlv_sz[FW_DBG_TRIGGER_RSSI] =
1421                 sizeof(struct iwl_fw_dbg_trigger_low_rssi);
1422         trigger_tlv_sz[FW_DBG_TRIGGER_TXQ_TIMERS] =
1423                 sizeof(struct iwl_fw_dbg_trigger_txq_timer);
1424         trigger_tlv_sz[FW_DBG_TRIGGER_TIME_EVENT] =
1425                 sizeof(struct iwl_fw_dbg_trigger_time_event);
1426         trigger_tlv_sz[FW_DBG_TRIGGER_BA] =
1427                 sizeof(struct iwl_fw_dbg_trigger_ba);
1428         trigger_tlv_sz[FW_DBG_TRIGGER_TDLS] =
1429                 sizeof(struct iwl_fw_dbg_trigger_tdls);
1430
1431         for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_trigger_tlv); i++) {
1432                 if (pieces->dbg_trigger_tlv[i]) {
1433                         /*
1434                          * If the trigger isn't long enough, WARN and exit.
1435                          * Someone is trying to debug something and he won't
1436                          * be able to catch the bug he is trying to chase.
1437                          * We'd better be noisy to be sure he knows what's
1438                          * going on.
1439                          */
1440                         if (WARN_ON(pieces->dbg_trigger_tlv_len[i] <
1441                                     (trigger_tlv_sz[i] +
1442                                      sizeof(struct iwl_fw_dbg_trigger_tlv))))
1443                                 goto out_free_fw;
1444                         drv->fw.dbg_trigger_tlv_len[i] =
1445                                 pieces->dbg_trigger_tlv_len[i];
1446                         drv->fw.dbg_trigger_tlv[i] =
1447                                 kmemdup(pieces->dbg_trigger_tlv[i],
1448                                         drv->fw.dbg_trigger_tlv_len[i],
1449                                         GFP_KERNEL);
1450                         if (!drv->fw.dbg_trigger_tlv[i])
1451                                 goto out_free_fw;
1452                 }
1453         }
1454
1455         /* Now that we can no longer fail, copy information */
1456
1457         drv->fw.dbg_mem_tlv = pieces->dbg_mem_tlv;
1458         pieces->dbg_mem_tlv = NULL;
1459         drv->fw.n_dbg_mem_tlv = pieces->n_dbg_mem_tlv;
1460
1461         /*
1462          * The (size - 16) / 12 formula is based on the information recorded
1463          * for each event, which is of mode 1 (including timestamp) for all
1464          * new microcodes that include this information.
1465          */
1466         fw->init_evtlog_ptr = pieces->init_evtlog_ptr;
1467         if (pieces->init_evtlog_size)
1468                 fw->init_evtlog_size = (pieces->init_evtlog_size - 16)/12;
1469         else
1470                 fw->init_evtlog_size =
1471                         drv->trans->cfg->base_params->max_event_log_size;
1472         fw->init_errlog_ptr = pieces->init_errlog_ptr;
1473         fw->inst_evtlog_ptr = pieces->inst_evtlog_ptr;
1474         if (pieces->inst_evtlog_size)
1475                 fw->inst_evtlog_size = (pieces->inst_evtlog_size - 16)/12;
1476         else
1477                 fw->inst_evtlog_size =
1478                         drv->trans->cfg->base_params->max_event_log_size;
1479         fw->inst_errlog_ptr = pieces->inst_errlog_ptr;
1480
1481         /*
1482          * figure out the offset of chain noise reset and gain commands
1483          * base on the size of standard phy calibration commands table size
1484          */
1485         if (fw->ucode_capa.standard_phy_calibration_size >
1486             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1487                 fw->ucode_capa.standard_phy_calibration_size =
1488                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1489
1490         /* We have our copies now, allow OS release its copies */
1491         release_firmware(ucode_raw);
1492
1493         mutex_lock(&iwlwifi_opmode_table_mtx);
1494         switch (fw->type) {
1495         case IWL_FW_DVM:
1496                 op = &iwlwifi_opmode_table[DVM_OP_MODE];
1497                 break;
1498         default:
1499                 WARN(1, "Invalid fw type %d\n", fw->type);
1500         case IWL_FW_MVM:
1501                 op = &iwlwifi_opmode_table[MVM_OP_MODE];
1502                 break;
1503         }
1504
1505         IWL_INFO(drv, "loaded firmware version %s op_mode %s\n",
1506                  drv->fw.fw_version, op->name);
1507
1508         /* add this device to the list of devices using this op_mode */
1509         list_add_tail(&drv->list, &op->drv);
1510
1511         if (op->ops) {
1512                 drv->op_mode = _iwl_op_mode_start(drv, op);
1513
1514                 if (!drv->op_mode) {
1515                         mutex_unlock(&iwlwifi_opmode_table_mtx);
1516                         goto out_unbind;
1517                 }
1518         } else {
1519                 load_module = true;
1520         }
1521         mutex_unlock(&iwlwifi_opmode_table_mtx);
1522
1523         /*
1524          * Complete the firmware request last so that
1525          * a driver unbind (stop) doesn't run while we
1526          * are doing the start() above.
1527          */
1528         complete(&drv->request_firmware_complete);
1529
1530         /*
1531          * Load the module last so we don't block anything
1532          * else from proceeding if the module fails to load
1533          * or hangs loading.
1534          */
1535         if (load_module)
1536                 request_module("%s", op->name);
1537         failure = false;
1538         goto free;
1539
1540  try_again:
1541         /* try next, if any */
1542         release_firmware(ucode_raw);
1543         if (iwl_request_firmware(drv, false))
1544                 goto out_unbind;
1545         goto free;
1546
1547  out_free_fw:
1548         release_firmware(ucode_raw);
1549  out_unbind:
1550         complete(&drv->request_firmware_complete);
1551         device_release_driver(drv->trans->dev);
1552         /* drv has just been freed by the release */
1553         failure = false;
1554  free:
1555         if (failure)
1556                 iwl_dealloc_ucode(drv);
1557
1558         if (pieces) {
1559                 for (i = 0; i < ARRAY_SIZE(pieces->img); i++)
1560                         kfree(pieces->img[i].sec);
1561                 kfree(pieces->dbg_mem_tlv);
1562                 kfree(pieces);
1563         }
1564 }
1565
1566 struct iwl_drv *iwl_drv_start(struct iwl_trans *trans)
1567 {
1568         struct iwl_drv *drv;
1569         int ret;
1570
1571         drv = kzalloc(sizeof(*drv), GFP_KERNEL);
1572         if (!drv) {
1573                 ret = -ENOMEM;
1574                 goto err;
1575         }
1576
1577         drv->trans = trans;
1578         drv->dev = trans->dev;
1579
1580         init_completion(&drv->request_firmware_complete);
1581         INIT_LIST_HEAD(&drv->list);
1582
1583 #ifdef CONFIG_IWLWIFI_DEBUGFS
1584         /* Create the device debugfs entries. */
1585         drv->dbgfs_drv = debugfs_create_dir(dev_name(trans->dev),
1586                                             iwl_dbgfs_root);
1587
1588         if (!drv->dbgfs_drv) {
1589                 IWL_ERR(drv, "failed to create debugfs directory\n");
1590                 ret = -ENOMEM;
1591                 goto err_free_drv;
1592         }
1593
1594         /* Create transport layer debugfs dir */
1595         drv->trans->dbgfs_dir = debugfs_create_dir("trans", drv->dbgfs_drv);
1596
1597         if (!drv->trans->dbgfs_dir) {
1598                 IWL_ERR(drv, "failed to create transport debugfs directory\n");
1599                 ret = -ENOMEM;
1600                 goto err_free_dbgfs;
1601         }
1602 #endif
1603
1604         ret = iwl_request_firmware(drv, true);
1605         if (ret) {
1606                 IWL_ERR(trans, "Couldn't request the fw\n");
1607                 goto err_fw;
1608         }
1609
1610         return drv;
1611
1612 err_fw:
1613 #ifdef CONFIG_IWLWIFI_DEBUGFS
1614 err_free_dbgfs:
1615         debugfs_remove_recursive(drv->dbgfs_drv);
1616 err_free_drv:
1617 #endif
1618         kfree(drv);
1619 err:
1620         return ERR_PTR(ret);
1621 }
1622
1623 void iwl_drv_stop(struct iwl_drv *drv)
1624 {
1625         wait_for_completion(&drv->request_firmware_complete);
1626
1627         _iwl_op_mode_stop(drv);
1628
1629         iwl_dealloc_ucode(drv);
1630
1631         mutex_lock(&iwlwifi_opmode_table_mtx);
1632         /*
1633          * List is empty (this item wasn't added)
1634          * when firmware loading failed -- in that
1635          * case we can't remove it from any list.
1636          */
1637         if (!list_empty(&drv->list))
1638                 list_del(&drv->list);
1639         mutex_unlock(&iwlwifi_opmode_table_mtx);
1640
1641 #ifdef CONFIG_IWLWIFI_DEBUGFS
1642         debugfs_remove_recursive(drv->dbgfs_drv);
1643 #endif
1644
1645         kfree(drv);
1646 }
1647
1648
1649 /* shared module parameters */
1650 struct iwl_mod_params iwlwifi_mod_params = {
1651         .fw_restart = true,
1652         .bt_coex_active = true,
1653         .power_level = IWL_POWER_INDEX_1,
1654         .d0i3_disable = true,
1655         .d0i3_timeout = 1000,
1656         .uapsd_disable = IWL_DISABLE_UAPSD_BSS | IWL_DISABLE_UAPSD_P2P_CLIENT,
1657         /* the rest are 0 by default */
1658 };
1659 IWL_EXPORT_SYMBOL(iwlwifi_mod_params);
1660
1661 int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops)
1662 {
1663         int i;
1664         struct iwl_drv *drv;
1665         struct iwlwifi_opmode_table *op;
1666
1667         mutex_lock(&iwlwifi_opmode_table_mtx);
1668         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1669                 op = &iwlwifi_opmode_table[i];
1670                 if (strcmp(op->name, name))
1671                         continue;
1672                 op->ops = ops;
1673                 /* TODO: need to handle exceptional case */
1674                 list_for_each_entry(drv, &op->drv, list)
1675                         drv->op_mode = _iwl_op_mode_start(drv, op);
1676
1677                 mutex_unlock(&iwlwifi_opmode_table_mtx);
1678                 return 0;
1679         }
1680         mutex_unlock(&iwlwifi_opmode_table_mtx);
1681         return -EIO;
1682 }
1683 IWL_EXPORT_SYMBOL(iwl_opmode_register);
1684
1685 void iwl_opmode_deregister(const char *name)
1686 {
1687         int i;
1688         struct iwl_drv *drv;
1689
1690         mutex_lock(&iwlwifi_opmode_table_mtx);
1691         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1692                 if (strcmp(iwlwifi_opmode_table[i].name, name))
1693                         continue;
1694                 iwlwifi_opmode_table[i].ops = NULL;
1695
1696                 /* call the stop routine for all devices */
1697                 list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list)
1698                         _iwl_op_mode_stop(drv);
1699
1700                 mutex_unlock(&iwlwifi_opmode_table_mtx);
1701                 return;
1702         }
1703         mutex_unlock(&iwlwifi_opmode_table_mtx);
1704 }
1705 IWL_EXPORT_SYMBOL(iwl_opmode_deregister);
1706
1707 static int __init iwl_drv_init(void)
1708 {
1709         int i;
1710
1711         mutex_init(&iwlwifi_opmode_table_mtx);
1712
1713         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++)
1714                 INIT_LIST_HEAD(&iwlwifi_opmode_table[i].drv);
1715
1716         pr_info(DRV_DESCRIPTION "\n");
1717         pr_info(DRV_COPYRIGHT "\n");
1718
1719 #ifdef CONFIG_IWLWIFI_DEBUGFS
1720         /* Create the root of iwlwifi debugfs subsystem. */
1721         iwl_dbgfs_root = debugfs_create_dir(DRV_NAME, NULL);
1722
1723         if (!iwl_dbgfs_root)
1724                 return -EFAULT;
1725 #endif
1726
1727         return iwl_pci_register_driver();
1728 }
1729 module_init(iwl_drv_init);
1730
1731 static void __exit iwl_drv_exit(void)
1732 {
1733         iwl_pci_unregister_driver();
1734
1735 #ifdef CONFIG_IWLWIFI_DEBUGFS
1736         debugfs_remove_recursive(iwl_dbgfs_root);
1737 #endif
1738 }
1739 module_exit(iwl_drv_exit);
1740
1741 #ifdef CONFIG_IWLWIFI_DEBUG
1742 module_param_named(debug, iwlwifi_mod_params.debug_level, uint, 0644);
1743 MODULE_PARM_DESC(debug, "debug output mask");
1744 #endif
1745
1746 module_param_named(swcrypto, iwlwifi_mod_params.swcrypto, int, 0444);
1747 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1748 module_param_named(11n_disable, iwlwifi_mod_params.disable_11n, uint, 0444);
1749 MODULE_PARM_DESC(11n_disable,
1750         "disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX");
1751 module_param_named(amsdu_size, iwlwifi_mod_params.amsdu_size, int, 0444);
1752 MODULE_PARM_DESC(amsdu_size,
1753                  "amsdu size 0: 12K for multi Rx queue devices, 2K for 22560 devices, "
1754                  "4K for other devices 1:4K 2:8K 3:12K 4: 2K (default 0)");
1755 module_param_named(fw_restart, iwlwifi_mod_params.fw_restart, bool, 0444);
1756 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error (default true)");
1757
1758 module_param_named(antenna_coupling, iwlwifi_mod_params.antenna_coupling,
1759                    int, 0444);
1760 MODULE_PARM_DESC(antenna_coupling,
1761                  "specify antenna coupling in dB (default: 0 dB)");
1762
1763 module_param_named(nvm_file, iwlwifi_mod_params.nvm_file, charp, 0444);
1764 MODULE_PARM_DESC(nvm_file, "NVM file name");
1765
1766 module_param_named(d0i3_disable, iwlwifi_mod_params.d0i3_disable, bool, 0444);
1767 MODULE_PARM_DESC(d0i3_disable, "disable d0i3 functionality (default: Y)");
1768
1769 module_param_named(lar_disable, iwlwifi_mod_params.lar_disable, bool, 0444);
1770 MODULE_PARM_DESC(lar_disable, "disable LAR functionality (default: N)");
1771
1772 module_param_named(uapsd_disable, iwlwifi_mod_params.uapsd_disable, uint, 0644);
1773 MODULE_PARM_DESC(uapsd_disable,
1774                  "disable U-APSD functionality bitmap 1: BSS 2: P2P Client (default: 3)");
1775
1776 /*
1777  * set bt_coex_active to true, uCode will do kill/defer
1778  * every time the priority line is asserted (BT is sending signals on the
1779  * priority line in the PCIx).
1780  * set bt_coex_active to false, uCode will ignore the BT activity and
1781  * perform the normal operation
1782  *
1783  * User might experience transmit issue on some platform due to WiFi/BT
1784  * co-exist problem. The possible behaviors are:
1785  *   Able to scan and finding all the available AP
1786  *   Not able to associate with any AP
1787  * On those platforms, WiFi communication can be restored by set
1788  * "bt_coex_active" module parameter to "false"
1789  *
1790  * default: bt_coex_active = true (BT_COEX_ENABLE)
1791  */
1792 module_param_named(bt_coex_active, iwlwifi_mod_params.bt_coex_active,
1793                    bool, 0444);
1794 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1795
1796 module_param_named(led_mode, iwlwifi_mod_params.led_mode, int, 0444);
1797 MODULE_PARM_DESC(led_mode, "0=system default, "
1798                 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1799
1800 module_param_named(power_save, iwlwifi_mod_params.power_save, bool, 0444);
1801 MODULE_PARM_DESC(power_save,
1802                  "enable WiFi power management (default: disable)");
1803
1804 module_param_named(power_level, iwlwifi_mod_params.power_level, int, 0444);
1805 MODULE_PARM_DESC(power_level,
1806                  "default power save level (range from 1 - 5, default: 1)");
1807
1808 module_param_named(fw_monitor, iwlwifi_mod_params.fw_monitor, bool, 0444);
1809 MODULE_PARM_DESC(fw_monitor,
1810                  "firmware monitor - to debug FW (default: false - needs lots of memory)");
1811
1812 module_param_named(d0i3_timeout, iwlwifi_mod_params.d0i3_timeout, uint, 0444);
1813 MODULE_PARM_DESC(d0i3_timeout, "Timeout to D0i3 entry when idle (ms)");
1814
1815 module_param_named(disable_11ac, iwlwifi_mod_params.disable_11ac, bool, 0444);
1816 MODULE_PARM_DESC(disable_11ac, "Disable VHT capabilities (default: false)");
1817
1818 module_param_named(remove_when_gone,
1819                    iwlwifi_mod_params.remove_when_gone, bool,
1820                    0444);
1821 MODULE_PARM_DESC(remove_when_gone,
1822                  "Remove dev from PCIe bus if it is deemed inaccessible (default: false)");
1823
1824 module_param_named(disable_11ax, iwlwifi_mod_params.disable_11ax, bool,
1825                    S_IRUGO);
1826 MODULE_PARM_DESC(disable_11ax, "Disable HE capabilities (default: false)");