drivers/net/wireless/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 - 2012 Intel Corporation. All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  22  * USA
  23  *
  24  * The full GNU General Public License is included in this distribution
  25  * in the file called LICENSE.GPL.
  26  *
  27  * Contact Information:
  28  *  Intel Linux Wireless <ilw@linux.intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
  31  * BSD LICENSE
  32  *
  33  * Copyright(c) 2005 - 2012 Intel Corporation. All rights reserved.
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  *
  40  *  * Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  *  * Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in
  44  *    the documentation and/or other materials provided with the
  45  *    distribution.
  46  *  * Neither the name Intel Corporation nor the names of its
  47  *    contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  56  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  *****************************************************************************/
  63 #include <linux/completion.h>
  64 #include <linux/dma-mapping.h>
  65 #include <linux/firmware.h>
  66 #include <linux/module.h>
  67 #include <linux/vmalloc.h>
  68
  69 #include "iwl-drv.h"
  70 #include "iwl-debug.h"
  71 #include "iwl-trans.h"
  72 #include "iwl-op-mode.h"
  73 #include "iwl-agn-hw.h"
  74 #include "iwl-fw.h"
  75 #include "iwl-config.h"
  76 #include "iwl-modparams.h"
  77
  78 /* private includes */
  79 #include "iwl-fw-file.h"
  80
  81 /******************************************************************************
  82  *
  83  * module boiler plate
  84  *
  85  ******************************************************************************/
  86
  87 /*
  88  * module name, copyright, version, etc.
  89  */
  90 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi driver for Linux"
  91
  92 #ifdef CONFIG_IWLWIFI_DEBUG
  93 #define VD "d"
  94 #else
  95 #define VD
  96 #endif
  97
  98 #define DRV_VERSION     IWLWIFI_VERSION VD
  99
 100 MODULE_DESCRIPTION(DRV_DESCRIPTION);
 101 MODULE_VERSION(DRV_VERSION);
 102 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
 103 MODULE_LICENSE("GPL");
 104
 105 #ifdef CONFIG_IWLWIFI_DEBUGFS
 106 static struct dentry *iwl_dbgfs_root;
 107 #endif
 108
 109 /**
 110  * struct iwl_drv - drv common data
 111  * @list: list of drv structures using this opmode
 112  * @fw: the iwl_fw structure
 113  * @op_mode: the running op_mode
 114  * @trans: transport layer
 115  * @dev: for debug prints only
 116  * @cfg: configuration struct
 117  * @fw_index: firmware revision to try loading
 118  * @firmware_name: composite filename of ucode file to load
 119  * @request_firmware_complete: the firmware has been obtained from user space
 120  */
 121 struct iwl_drv {
 122         struct list_head list;
 123         struct iwl_fw fw;
 124
 125         struct iwl_op_mode *op_mode;
 126         struct iwl_trans *trans;
 127         struct device *dev;
 128         const struct iwl_cfg *cfg;
 129
 130         int fw_index;                   /* firmware we're trying to load */
 131         char firmware_name[25];         /* name of firmware file to load */
 132
 133         struct completion request_firmware_complete;
 134
 135 #ifdef CONFIG_IWLWIFI_DEBUGFS
 136         struct dentry *dbgfs_drv;
 137         struct dentry *dbgfs_trans;
 138         struct dentry *dbgfs_op_mode;
 139 #endif
 140 };
 141
 142 #define DVM_OP_MODE     0
 143 #define MVM_OP_MODE     1
 144
 145 /* Protects the table contents, i.e. the ops pointer & drv list */
 146 static struct mutex iwlwifi_opmode_table_mtx;
 147 static struct iwlwifi_opmode_table {
 148         const char *name;                       /* name: iwldvm, iwlmvm, etc */
 149         const struct iwl_op_mode_ops *ops;      /* pointer to op_mode ops */
 150         struct list_head drv;           /* list of devices using this op_mode */
 151 } iwlwifi_opmode_table[] = {            /* ops set when driver is initialized */
 152         { .name = "iwldvm", .ops = NULL },
 153         { .name = "iwlmvm", .ops = NULL },
 154 };
 155
 156 /*
 157  * struct fw_sec: Just for the image parsing proccess.
 158  * For the fw storage we are using struct fw_desc.
 159  */
 160 struct fw_sec {
 161         const void *data;               /* the sec data */
 162         size_t size;                    /* section size */
 163         u32 offset;                     /* offset of writing in the device */
 164 };
 165
 166 static void iwl_free_fw_desc(struct iwl_drv *drv, struct fw_desc *desc)
 167 {
 168         vfree(desc->data);
 169         desc->data = NULL;
 170         desc->len = 0;
 171 }
 172
 173 static void iwl_free_fw_img(struct iwl_drv *drv, struct fw_img *img)
 174 {
 175         int i;
 176         for (i = 0; i < IWL_UCODE_SECTION_MAX; i++)
 177                 iwl_free_fw_desc(drv, &img->sec[i]);
 178 }
 179
 180 static void iwl_dealloc_ucode(struct iwl_drv *drv)
 181 {
 182         int i;
 183         for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
 184                 iwl_free_fw_img(drv, drv->fw.img + i);
 185 }
 186
 187 static int iwl_alloc_fw_desc(struct iwl_drv *drv, struct fw_desc *desc,
 188                              struct fw_sec *sec)
 189 {
 190         void *data;
 191
 192         desc->data = NULL;
 193
 194         if (!sec || !sec->size)
 195                 return -EINVAL;
 196
 197         data = vmalloc(sec->size);
 198         if (!data)
 199                 return -ENOMEM;
 200
 201         desc->len = sec->size;
 202         desc->offset = sec->offset;
 203         memcpy(data, sec->data, desc->len);
 204         desc->data = data;
 205
 206         return 0;
 207 }
 208
 209 static void iwl_req_fw_callback(const struct firmware *ucode_raw,
 210                                 void *context);
 211
 212 #define UCODE_EXPERIMENTAL_INDEX        100
 213 #define UCODE_EXPERIMENTAL_TAG          "exp"
 214
 215 static int iwl_request_firmware(struct iwl_drv *drv, bool first)
 216 {
 217         const char *name_pre = drv->cfg->fw_name_pre;
 218         char tag[8];
 219
 220         if (first) {
 221 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
 222                 drv->fw_index = UCODE_EXPERIMENTAL_INDEX;
 223                 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
 224         } else if (drv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
 225 #endif
 226                 drv->fw_index = drv->cfg->ucode_api_max;
 227                 sprintf(tag, "%d", drv->fw_index);
 228         } else {
 229                 drv->fw_index--;
 230                 sprintf(tag, "%d", drv->fw_index);
 231         }
 232
 233         if (drv->fw_index < drv->cfg->ucode_api_min) {
 234                 IWL_ERR(drv, "no suitable firmware found!\n");
 235                 return -ENOENT;
 236         }
 237
 238         sprintf(drv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
 239
 240         IWL_DEBUG_INFO(drv, "attempting to load firmware %s'%s'\n",
 241                        (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 242                                 ? "EXPERIMENTAL " : "",
 243                        drv->firmware_name);
 244
 245         return request_firmware_nowait(THIS_MODULE, 1, drv->firmware_name,
 246                                        drv->trans->dev,
 247                                        GFP_KERNEL, drv, iwl_req_fw_callback);
 248 }
 249
 250 struct fw_img_parsing {
 251         struct fw_sec sec[IWL_UCODE_SECTION_MAX];
 252         int sec_counter;
 253 };
 254
 255 /*
 256  * struct fw_sec_parsing: to extract fw section and it's offset from tlv
 257  */
 258 struct fw_sec_parsing {
 259         __le32 offset;
 260         const u8 data[];
 261 } __packed;
 262
 263 /**
 264  * struct iwl_tlv_calib_data - parse the default calib data from TLV
 265  *
 266  * @ucode_type: the uCode to which the following default calib relates.
 267  * @calib: default calibrations.
 268  */
 269 struct iwl_tlv_calib_data {
 270         __le32 ucode_type;
 271         __le64 calib;
 272 } __packed;
 273
 274 struct iwl_firmware_pieces {
 275         struct fw_img_parsing img[IWL_UCODE_TYPE_MAX];
 276
 277         u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
 278         u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
 279 };
 280
 281 /*
 282  * These functions are just to extract uCode section data from the pieces
 283  * structure.
 284  */
 285 static struct fw_sec *get_sec(struct iwl_firmware_pieces *pieces,
 286                               enum iwl_ucode_type type,
 287                               int  sec)
 288 {
 289         return &pieces->img[type].sec[sec];
 290 }
 291
 292 static void set_sec_data(struct iwl_firmware_pieces *pieces,
 293                          enum iwl_ucode_type type,
 294                          int sec,
 295                          const void *data)
 296 {
 297         pieces->img[type].sec[sec].data = data;
 298 }
 299
 300 static void set_sec_size(struct iwl_firmware_pieces *pieces,
 301                          enum iwl_ucode_type type,
 302                          int sec,
 303                          size_t size)
 304 {
 305         pieces->img[type].sec[sec].size = size;
 306 }
 307
 308 static size_t get_sec_size(struct iwl_firmware_pieces *pieces,
 309                            enum iwl_ucode_type type,
 310                            int sec)
 311 {
 312         return pieces->img[type].sec[sec].size;
 313 }
 314
 315 static void set_sec_offset(struct iwl_firmware_pieces *pieces,
 316                            enum iwl_ucode_type type,
 317                            int sec,
 318                            u32 offset)
 319 {
 320         pieces->img[type].sec[sec].offset = offset;
 321 }
 322
 323 /*
 324  * Gets uCode section from tlv.
 325  */
 326 static int iwl_store_ucode_sec(struct iwl_firmware_pieces *pieces,
 327                                const void *data, enum iwl_ucode_type type,
 328                                int size)
 329 {
 330         struct fw_img_parsing *img;
 331         struct fw_sec *sec;
 332         struct fw_sec_parsing *sec_parse;
 333
 334         if (WARN_ON(!pieces || !data || type >= IWL_UCODE_TYPE_MAX))
 335                 return -1;
 336
 337         sec_parse = (struct fw_sec_parsing *)data;
 338
 339         img = &pieces->img[type];
 340         sec = &img->sec[img->sec_counter];
 341
 342         sec->offset = le32_to_cpu(sec_parse->offset);
 343         sec->data = sec_parse->data;
 344         sec->size = size - sizeof(sec_parse->offset);
 345
 346         ++img->sec_counter;
 347
 348         return 0;
 349 }
 350
 351 static int iwl_set_default_calib(struct iwl_drv *drv, const u8 *data)
 352 {
 353         struct iwl_tlv_calib_data *def_calib =
 354                                         (struct iwl_tlv_calib_data *)data;
 355         u32 ucode_type = le32_to_cpu(def_calib->ucode_type);
 356         if (ucode_type >= IWL_UCODE_TYPE_MAX) {
 357                 IWL_ERR(drv, "Wrong ucode_type %u for default calibration.\n",
 358                         ucode_type);
 359                 return -EINVAL;
 360         }
 361         drv->fw.default_calib[ucode_type] = le64_to_cpu(def_calib->calib);
 362         return 0;
 363 }
 364
 365 static int iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
 366                                     const struct firmware *ucode_raw,
 367                                     struct iwl_firmware_pieces *pieces)
 368 {
 369         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
 370         u32 api_ver, hdr_size, build;
 371         char buildstr[25];
 372         const u8 *src;
 373
 374         drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
 375         api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
 376
 377         switch (api_ver) {
 378         default:
 379                 hdr_size = 28;
 380                 if (ucode_raw->size < hdr_size) {
 381                         IWL_ERR(drv, "File size too small!\n");
 382                         return -EINVAL;
 383                 }
 384                 build = le32_to_cpu(ucode->u.v2.build);
 385                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 386                              le32_to_cpu(ucode->u.v2.inst_size));
 387                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 388                              le32_to_cpu(ucode->u.v2.data_size));
 389                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 390                              le32_to_cpu(ucode->u.v2.init_size));
 391                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 392                              le32_to_cpu(ucode->u.v2.init_data_size));
 393                 src = ucode->u.v2.data;
 394                 break;
 395         case 0:
 396         case 1:
 397         case 2:
 398                 hdr_size = 24;
 399                 if (ucode_raw->size < hdr_size) {
 400                         IWL_ERR(drv, "File size too small!\n");
 401                         return -EINVAL;
 402                 }
 403                 build = 0;
 404                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 405                              le32_to_cpu(ucode->u.v1.inst_size));
 406                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 407                              le32_to_cpu(ucode->u.v1.data_size));
 408                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 409                              le32_to_cpu(ucode->u.v1.init_size));
 410                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 411                              le32_to_cpu(ucode->u.v1.init_data_size));
 412                 src = ucode->u.v1.data;
 413                 break;
 414         }
 415
 416         if (build)
 417                 sprintf(buildstr, " build %u%s", build,
 418                        (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 419                                 ? " (EXP)" : "");
 420         else
 421                 buildstr[0] = '\0';
 422
 423         snprintf(drv->fw.fw_version,
 424                  sizeof(drv->fw.fw_version),
 425                  "%u.%u.%u.%u%s",
 426                  IWL_UCODE_MAJOR(drv->fw.ucode_ver),
 427                  IWL_UCODE_MINOR(drv->fw.ucode_ver),
 428                  IWL_UCODE_API(drv->fw.ucode_ver),
 429                  IWL_UCODE_SERIAL(drv->fw.ucode_ver),
 430                  buildstr);
 431
 432         /* Verify size of file vs. image size info in file's header */
 433
 434         if (ucode_raw->size != hdr_size +
 435             get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) +
 436             get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) +
 437             get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) +
 438             get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)) {
 439
 440                 IWL_ERR(drv,
 441                         "uCode file size %d does not match expected size\n",
 442                         (int)ucode_raw->size);
 443                 return -EINVAL;
 444         }
 445
 446
 447         set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, src);
 448         src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST);
 449         set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 450                        IWLAGN_RTC_INST_LOWER_BOUND);
 451         set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, src);
 452         src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA);
 453         set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 454                        IWLAGN_RTC_DATA_LOWER_BOUND);
 455         set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, src);
 456         src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST);
 457         set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 458                        IWLAGN_RTC_INST_LOWER_BOUND);
 459         set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, src);
 460         src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA);
 461         set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 462                        IWLAGN_RTC_DATA_LOWER_BOUND);
 463         return 0;
 464 }
 465
 466 static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
 467                                 const struct firmware *ucode_raw,
 468                                 struct iwl_firmware_pieces *pieces,
 469                                 struct iwl_ucode_capabilities *capa)
 470 {
 471         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
 472         struct iwl_ucode_tlv *tlv;
 473         size_t len = ucode_raw->size;
 474         const u8 *data;
 475         u32 tlv_len;
 476         enum iwl_ucode_tlv_type tlv_type;
 477         const u8 *tlv_data;
 478         char buildstr[25];
 479         u32 build;
 480
 481         if (len < sizeof(*ucode)) {
 482                 IWL_ERR(drv, "uCode has invalid length: %zd\n", len);
 483                 return -EINVAL;
 484         }
 485
 486         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
 487                 IWL_ERR(drv, "invalid uCode magic: 0X%x\n",
 488                         le32_to_cpu(ucode->magic));
 489                 return -EINVAL;
 490         }
 491
 492         drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
 493         build = le32_to_cpu(ucode->build);
 494
 495         if (build)
 496                 sprintf(buildstr, " build %u%s", build,
 497                        (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 498                                 ? " (EXP)" : "");
 499         else
 500                 buildstr[0] = '\0';
 501
 502         snprintf(drv->fw.fw_version,
 503                  sizeof(drv->fw.fw_version),
 504                  "%u.%u.%u.%u%s",
 505                  IWL_UCODE_MAJOR(drv->fw.ucode_ver),
 506                  IWL_UCODE_MINOR(drv->fw.ucode_ver),
 507                  IWL_UCODE_API(drv->fw.ucode_ver),
 508                  IWL_UCODE_SERIAL(drv->fw.ucode_ver),
 509                  buildstr);
 510
 511         data = ucode->data;
 512
 513         len -= sizeof(*ucode);
 514
 515         while (len >= sizeof(*tlv)) {
 516                 len -= sizeof(*tlv);
 517                 tlv = (void *)data;
 518
 519                 tlv_len = le32_to_cpu(tlv->length);
 520                 tlv_type = le32_to_cpu(tlv->type);
 521                 tlv_data = tlv->data;
 522
 523                 if (len < tlv_len) {
 524                         IWL_ERR(drv, "invalid TLV len: %zd/%u\n",
 525                                 len, tlv_len);
 526                         return -EINVAL;
 527                 }
 528                 len -= ALIGN(tlv_len, 4);
 529                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
 530
 531                 switch (tlv_type) {
 532                 case IWL_UCODE_TLV_INST:
 533                         set_sec_data(pieces, IWL_UCODE_REGULAR,
 534                                      IWL_UCODE_SECTION_INST, tlv_data);
 535                         set_sec_size(pieces, IWL_UCODE_REGULAR,
 536                                      IWL_UCODE_SECTION_INST, tlv_len);
 537                         set_sec_offset(pieces, IWL_UCODE_REGULAR,
 538                                        IWL_UCODE_SECTION_INST,
 539                                        IWLAGN_RTC_INST_LOWER_BOUND);
 540                         break;
 541                 case IWL_UCODE_TLV_DATA:
 542                         set_sec_data(pieces, IWL_UCODE_REGULAR,
 543                                      IWL_UCODE_SECTION_DATA, tlv_data);
 544                         set_sec_size(pieces, IWL_UCODE_REGULAR,
 545                                      IWL_UCODE_SECTION_DATA, tlv_len);
 546                         set_sec_offset(pieces, IWL_UCODE_REGULAR,
 547                                        IWL_UCODE_SECTION_DATA,
 548                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 549                         break;
 550                 case IWL_UCODE_TLV_INIT:
 551                         set_sec_data(pieces, IWL_UCODE_INIT,
 552                                      IWL_UCODE_SECTION_INST, tlv_data);
 553                         set_sec_size(pieces, IWL_UCODE_INIT,
 554                                      IWL_UCODE_SECTION_INST, tlv_len);
 555                         set_sec_offset(pieces, IWL_UCODE_INIT,
 556                                        IWL_UCODE_SECTION_INST,
 557                                        IWLAGN_RTC_INST_LOWER_BOUND);
 558                         break;
 559                 case IWL_UCODE_TLV_INIT_DATA:
 560                         set_sec_data(pieces, IWL_UCODE_INIT,
 561                                      IWL_UCODE_SECTION_DATA, tlv_data);
 562                         set_sec_size(pieces, IWL_UCODE_INIT,
 563                                      IWL_UCODE_SECTION_DATA, tlv_len);
 564                         set_sec_offset(pieces, IWL_UCODE_INIT,
 565                                        IWL_UCODE_SECTION_DATA,
 566                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 567                         break;
 568                 case IWL_UCODE_TLV_BOOT:
 569                         IWL_ERR(drv, "Found unexpected BOOT ucode\n");
 570                         break;
 571                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
 572                         if (tlv_len != sizeof(u32))
 573                                 goto invalid_tlv_len;
 574                         capa->max_probe_length =
 575                                         le32_to_cpup((__le32 *)tlv_data);
 576                         break;
 577                 case IWL_UCODE_TLV_PAN:
 578                         if (tlv_len)
 579                                 goto invalid_tlv_len;
 580                         capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
 581                         break;
 582                 case IWL_UCODE_TLV_FLAGS:
 583                         /* must be at least one u32 */
 584                         if (tlv_len < sizeof(u32))
 585                                 goto invalid_tlv_len;
 586                         /* and a proper number of u32s */
 587                         if (tlv_len % sizeof(u32))
 588                                 goto invalid_tlv_len;
 589                         /*
 590                          * This driver only reads the first u32 as
 591                          * right now no more features are defined,
 592                          * if that changes then either the driver
 593                          * will not work with the new firmware, or
 594                          * it'll not take advantage of new features.
 595                          */
 596                         capa->flags = le32_to_cpup((__le32 *)tlv_data);
 597                         break;
 598                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
 599                         if (tlv_len != sizeof(u32))
 600                                 goto invalid_tlv_len;
 601                         pieces->init_evtlog_ptr =
 602                                         le32_to_cpup((__le32 *)tlv_data);
 603                         break;
 604                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
 605                         if (tlv_len != sizeof(u32))
 606                                 goto invalid_tlv_len;
 607                         pieces->init_evtlog_size =
 608                                         le32_to_cpup((__le32 *)tlv_data);
 609                         break;
 610                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
 611                         if (tlv_len != sizeof(u32))
 612                                 goto invalid_tlv_len;
 613                         pieces->init_errlog_ptr =
 614                                         le32_to_cpup((__le32 *)tlv_data);
 615                         break;
 616                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
 617                         if (tlv_len != sizeof(u32))
 618                                 goto invalid_tlv_len;
 619                         pieces->inst_evtlog_ptr =
 620                                         le32_to_cpup((__le32 *)tlv_data);
 621                         break;
 622                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
 623                         if (tlv_len != sizeof(u32))
 624                                 goto invalid_tlv_len;
 625                         pieces->inst_evtlog_size =
 626                                         le32_to_cpup((__le32 *)tlv_data);
 627                         break;
 628                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
 629                         if (tlv_len != sizeof(u32))
 630                                 goto invalid_tlv_len;
 631                         pieces->inst_errlog_ptr =
 632                                         le32_to_cpup((__le32 *)tlv_data);
 633                         break;
 634                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
 635                         if (tlv_len)
 636                                 goto invalid_tlv_len;
 637                         drv->fw.enhance_sensitivity_table = true;
 638                         break;
 639                 case IWL_UCODE_TLV_WOWLAN_INST:
 640                         set_sec_data(pieces, IWL_UCODE_WOWLAN,
 641                                      IWL_UCODE_SECTION_INST, tlv_data);
 642                         set_sec_size(pieces, IWL_UCODE_WOWLAN,
 643                                      IWL_UCODE_SECTION_INST, tlv_len);
 644                         set_sec_offset(pieces, IWL_UCODE_WOWLAN,
 645                                        IWL_UCODE_SECTION_INST,
 646                                        IWLAGN_RTC_INST_LOWER_BOUND);
 647                         break;
 648                 case IWL_UCODE_TLV_WOWLAN_DATA:
 649                         set_sec_data(pieces, IWL_UCODE_WOWLAN,
 650                                      IWL_UCODE_SECTION_DATA, tlv_data);
 651                         set_sec_size(pieces, IWL_UCODE_WOWLAN,
 652                                      IWL_UCODE_SECTION_DATA, tlv_len);
 653                         set_sec_offset(pieces, IWL_UCODE_WOWLAN,
 654                                        IWL_UCODE_SECTION_DATA,
 655                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 656                         break;
 657                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
 658                         if (tlv_len != sizeof(u32))
 659                                 goto invalid_tlv_len;
 660                         capa->standard_phy_calibration_size =
 661                                         le32_to_cpup((__le32 *)tlv_data);
 662                         break;
 663                  case IWL_UCODE_TLV_SEC_RT:
 664                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
 665                                             tlv_len);
 666                         drv->fw.mvm_fw = true;
 667                         break;
 668                 case IWL_UCODE_TLV_SEC_INIT:
 669                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
 670                                             tlv_len);
 671                         drv->fw.mvm_fw = true;
 672                         break;
 673                 case IWL_UCODE_TLV_SEC_WOWLAN:
 674                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
 675                                             tlv_len);
 676                         drv->fw.mvm_fw = true;
 677                         break;
 678                 case IWL_UCODE_TLV_DEF_CALIB:
 679                         if (tlv_len != sizeof(struct iwl_tlv_calib_data))
 680                                 goto invalid_tlv_len;
 681                         if (iwl_set_default_calib(drv, tlv_data))
 682                                 goto tlv_error;
 683                         break;
 684                 case IWL_UCODE_TLV_PHY_SKU:
 685                         if (tlv_len != sizeof(u32))
 686                                 goto invalid_tlv_len;
 687                         drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data);
 688                         break;
 689                 default:
 690                         IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
 691                         break;
 692                 }
 693         }
 694
 695         if (len) {
 696                 IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
 697                 iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len);
 698                 return -EINVAL;
 699         }
 700
 701         return 0;
 702
 703  invalid_tlv_len:
 704         IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
 705  tlv_error:
 706         iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);
 707
 708         return -EINVAL;
 709 }
 710
 711 static int iwl_alloc_ucode(struct iwl_drv *drv,
 712                            struct iwl_firmware_pieces *pieces,
 713                            enum iwl_ucode_type type)
 714 {
 715         int i;
 716         for (i = 0;
 717              i < IWL_UCODE_SECTION_MAX && get_sec_size(pieces, type, i);
 718              i++)
 719                 if (iwl_alloc_fw_desc(drv, &(drv->fw.img[type].sec[i]),
 720                                       get_sec(pieces, type, i)))
 721                         return -ENOMEM;
 722         return 0;
 723 }
 724
 725 static int validate_sec_sizes(struct iwl_drv *drv,
 726                               struct iwl_firmware_pieces *pieces,
 727                               const struct iwl_cfg *cfg)
 728 {
 729         IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %Zd\n",
 730                 get_sec_size(pieces, IWL_UCODE_REGULAR,
 731                              IWL_UCODE_SECTION_INST));
 732         IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %Zd\n",
 733                 get_sec_size(pieces, IWL_UCODE_REGULAR,
 734                              IWL_UCODE_SECTION_DATA));
 735         IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %Zd\n",
 736                 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST));
 737         IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %Zd\n",
 738                 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA));
 739
 740         /* Verify that uCode images will fit in card's SRAM. */
 741         if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
 742                                                         cfg->max_inst_size) {
 743                 IWL_ERR(drv, "uCode instr len %Zd too large to fit in\n",
 744                         get_sec_size(pieces, IWL_UCODE_REGULAR,
 745                                                 IWL_UCODE_SECTION_INST));
 746                 return -1;
 747         }
 748
 749         if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
 750                                                         cfg->max_data_size) {
 751                 IWL_ERR(drv, "uCode data len %Zd too large to fit in\n",
 752                         get_sec_size(pieces, IWL_UCODE_REGULAR,
 753                                                 IWL_UCODE_SECTION_DATA));
 754                 return -1;
 755         }
 756
 757          if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) >
 758                                                         cfg->max_inst_size) {
 759                 IWL_ERR(drv, "uCode init instr len %Zd too large to fit in\n",
 760                         get_sec_size(pieces, IWL_UCODE_INIT,
 761                                                 IWL_UCODE_SECTION_INST));
 762                 return -1;
 763         }
 764
 765         if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA) >
 766                                                         cfg->max_data_size) {
 767                 IWL_ERR(drv, "uCode init data len %Zd too large to fit in\n",
 768                         get_sec_size(pieces, IWL_UCODE_REGULAR,
 769                                                 IWL_UCODE_SECTION_DATA));
 770                 return -1;
 771         }
 772         return 0;
 773 }
 774
 775 static struct iwl_op_mode *
 776 _iwl_op_mode_start(struct iwl_drv *drv, struct iwlwifi_opmode_table *op)
 777 {
 778         const struct iwl_op_mode_ops *ops = op->ops;
 779         struct dentry *dbgfs_dir = NULL;
 780         struct iwl_op_mode *op_mode = NULL;
 781
 782 #ifdef CONFIG_IWLWIFI_DEBUGFS
 783         drv->dbgfs_op_mode = debugfs_create_dir(op->name,
 784                                                 drv->dbgfs_drv);
 785         if (!drv->dbgfs_op_mode) {
 786                 IWL_ERR(drv,
 787                         "failed to create opmode debugfs directory\n");
 788                 return op_mode;
 789         }
 790         dbgfs_dir = drv->dbgfs_op_mode;
 791 #endif
 792
 793         op_mode = ops->start(drv->trans, drv->cfg, &drv->fw, dbgfs_dir);
 794
 795 #ifdef CONFIG_IWLWIFI_DEBUGFS
 796         if (!op_mode) {
 797                 debugfs_remove_recursive(drv->dbgfs_op_mode);
 798                 drv->dbgfs_op_mode = NULL;
 799         }
 800 #endif
 801
 802         return op_mode;
 803 }
 804
 805 static void _iwl_op_mode_stop(struct iwl_drv *drv)
 806 {
 807         /* op_mode can be NULL if its start failed */
 808         if (drv->op_mode) {
 809                 iwl_op_mode_stop(drv->op_mode);
 810                 drv->op_mode = NULL;
 811
 812 #ifdef CONFIG_IWLWIFI_DEBUGFS
 813                 debugfs_remove_recursive(drv->dbgfs_op_mode);
 814                 drv->dbgfs_op_mode = NULL;
 815 #endif
 816         }
 817 }
 818
 819 /**
 820  * iwl_req_fw_callback - callback when firmware was loaded
 821  *
 822  * If loaded successfully, copies the firmware into buffers
 823  * for the card to fetch (via DMA).
 824  */
 825 static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
 826 {
 827         struct iwl_drv *drv = context;
 828         struct iwl_fw *fw = &drv->fw;
 829         struct iwl_ucode_header *ucode;
 830         struct iwlwifi_opmode_table *op;
 831         int err;
 832         struct iwl_firmware_pieces pieces;
 833         const unsigned int api_max = drv->cfg->ucode_api_max;
 834         unsigned int api_ok = drv->cfg->ucode_api_ok;
 835         const unsigned int api_min = drv->cfg->ucode_api_min;
 836         u32 api_ver;
 837         int i;
 838         bool load_module = false;
 839
 840         fw->ucode_capa.max_probe_length = 200;
 841         fw->ucode_capa.standard_phy_calibration_size =
 842                         IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
 843
 844         if (!api_ok)
 845                 api_ok = api_max;
 846
 847         memset(&pieces, 0, sizeof(pieces));
 848
 849         if (!ucode_raw) {
 850                 if (drv->fw_index <= api_ok)
 851                         IWL_ERR(drv,
 852                                 "request for firmware file '%s' failed.\n",
 853                                 drv->firmware_name);
 854                 goto try_again;
 855         }
 856
 857         IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
 858                        drv->firmware_name, ucode_raw->size);
 859
 860         /* Make sure that we got at least the API version number */
 861         if (ucode_raw->size < 4) {
 862                 IWL_ERR(drv, "File size way too small!\n");
 863                 goto try_again;
 864         }
 865
 866         /* Data from ucode file:  header followed by uCode images */
 867         ucode = (struct iwl_ucode_header *)ucode_raw->data;
 868
 869         if (ucode->ver)
 870                 err = iwl_parse_v1_v2_firmware(drv, ucode_raw, &pieces);
 871         else
 872                 err = iwl_parse_tlv_firmware(drv, ucode_raw, &pieces,
 873                                            &fw->ucode_capa);
 874
 875         if (err)
 876                 goto try_again;
 877
 878         api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
 879
 880         /*
 881          * api_ver should match the api version forming part of the
 882          * firmware filename ... but we don't check for that and only rely
 883          * on the API version read from firmware header from here on forward
 884          */
 885         /* no api version check required for experimental uCode */
 886         if (drv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
 887                 if (api_ver < api_min || api_ver > api_max) {
 888                         IWL_ERR(drv,
 889                                 "Driver unable to support your firmware API. "
 890                                 "Driver supports v%u, firmware is v%u.\n",
 891                                 api_max, api_ver);
 892                         goto try_again;
 893                 }
 894
 895                 if (api_ver < api_ok) {
 896                         if (api_ok != api_max)
 897                                 IWL_ERR(drv, "Firmware has old API version, "
 898                                         "expected v%u through v%u, got v%u.\n",
 899                                         api_ok, api_max, api_ver);
 900                         else
 901                                 IWL_ERR(drv, "Firmware has old API version, "
 902                                         "expected v%u, got v%u.\n",
 903                                         api_max, api_ver);
 904                         IWL_ERR(drv, "New firmware can be obtained from "
 905                                       "http://www.intellinuxwireless.org/.\n");
 906                 }
 907         }
 908
 909         IWL_INFO(drv, "loaded firmware version %s", drv->fw.fw_version);
 910
 911         /*
 912          * In mvm uCode there is no difference between data and instructions
 913          * sections.
 914          */
 915         if (!fw->mvm_fw && validate_sec_sizes(drv, &pieces, drv->cfg))
 916                 goto try_again;
 917
 918         /* Allocate ucode buffers for card's bus-master loading ... */
 919
 920         /* Runtime instructions and 2 copies of data:
 921          * 1) unmodified from disk
 922          * 2) backup cache for save/restore during power-downs */
 923         for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
 924                 if (iwl_alloc_ucode(drv, &pieces, i))
 925                         goto out_free_fw;
 926
 927         /* Now that we can no longer fail, copy information */
 928
 929         /*
 930          * The (size - 16) / 12 formula is based on the information recorded
 931          * for each event, which is of mode 1 (including timestamp) for all
 932          * new microcodes that include this information.
 933          */
 934         fw->init_evtlog_ptr = pieces.init_evtlog_ptr;
 935         if (pieces.init_evtlog_size)
 936                 fw->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
 937         else
 938                 fw->init_evtlog_size =
 939                         drv->cfg->base_params->max_event_log_size;
 940         fw->init_errlog_ptr = pieces.init_errlog_ptr;
 941         fw->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
 942         if (pieces.inst_evtlog_size)
 943                 fw->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
 944         else
 945                 fw->inst_evtlog_size =
 946                         drv->cfg->base_params->max_event_log_size;
 947         fw->inst_errlog_ptr = pieces.inst_errlog_ptr;
 948
 949         /*
 950          * figure out the offset of chain noise reset and gain commands
 951          * base on the size of standard phy calibration commands table size
 952          */
 953         if (fw->ucode_capa.standard_phy_calibration_size >
 954             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
 955                 fw->ucode_capa.standard_phy_calibration_size =
 956                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
 957
 958         /* We have our copies now, allow OS release its copies */
 959         release_firmware(ucode_raw);
 960
 961         mutex_lock(&iwlwifi_opmode_table_mtx);
 962         op = &iwlwifi_opmode_table[DVM_OP_MODE];
 963
 964         /* add this device to the list of devices using this op_mode */
 965         list_add_tail(&drv->list, &op->drv);
 966
 967         if (op->ops) {
 968                 drv->op_mode = _iwl_op_mode_start(drv, op);
 969
 970                 if (!drv->op_mode) {
 971                         mutex_unlock(&iwlwifi_opmode_table_mtx);
 972                         goto out_unbind;
 973                 }
 974         } else {
 975                 load_module = true;
 976         }
 977         mutex_unlock(&iwlwifi_opmode_table_mtx);
 978
 979         /*
 980          * Complete the firmware request last so that
 981          * a driver unbind (stop) doesn't run while we
 982          * are doing the start() above.
 983          */
 984         complete(&drv->request_firmware_complete);
 985
 986         /*
 987          * Load the module last so we don't block anything
 988          * else from proceeding if the module fails to load
 989          * or hangs loading.
 990          */
 991         if (load_module)
 992                 request_module("%s", op->name);
 993         return;
 994
 995  try_again:
 996         /* try next, if any */
 997         release_firmware(ucode_raw);
 998         if (iwl_request_firmware(drv, false))
 999                 goto out_unbind;
1000         return;
1001
1002  out_free_fw:
1003         IWL_ERR(drv, "failed to allocate pci memory\n");
1004         iwl_dealloc_ucode(drv);
1005         release_firmware(ucode_raw);
1006  out_unbind:
1007         complete(&drv->request_firmware_complete);
1008         device_release_driver(drv->trans->dev);
1009 }
1010
1011 struct iwl_drv *iwl_drv_start(struct iwl_trans *trans,
1012                               const struct iwl_cfg *cfg)
1013 {
1014         struct iwl_drv *drv;
1015         int ret;
1016
1017         drv = kzalloc(sizeof(*drv), GFP_KERNEL);
1018         if (!drv)
1019                 return NULL;
1020
1021         drv->trans = trans;
1022         drv->dev = trans->dev;
1023         drv->cfg = cfg;
1024
1025         init_completion(&drv->request_firmware_complete);
1026         INIT_LIST_HEAD(&drv->list);
1027
1028 #ifdef CONFIG_IWLWIFI_DEBUGFS
1029         /* Create the device debugfs entries. */
1030         drv->dbgfs_drv = debugfs_create_dir(dev_name(trans->dev),
1031                                             iwl_dbgfs_root);
1032
1033         if (!drv->dbgfs_drv) {
1034                 IWL_ERR(drv, "failed to create debugfs directory\n");
1035                 goto err_free_drv;
1036         }
1037
1038         /* Create transport layer debugfs dir */
1039         drv->trans->dbgfs_dir = debugfs_create_dir("trans", drv->dbgfs_drv);
1040
1041         if (!drv->trans->dbgfs_dir) {
1042                 IWL_ERR(drv, "failed to create transport debugfs directory\n");
1043                 goto err_free_dbgfs;
1044         }
1045 #endif
1046
1047         ret = iwl_request_firmware(drv, true);
1048
1049         if (ret) {
1050                 IWL_ERR(trans, "Couldn't request the fw\n");
1051                 goto err_fw;
1052         }
1053
1054         return drv;
1055
1056 err_fw:
1057 #ifdef CONFIG_IWLWIFI_DEBUGFS
1058 err_free_dbgfs:
1059         debugfs_remove_recursive(drv->dbgfs_drv);
1060 err_free_drv:
1061 #endif
1062         kfree(drv);
1063         drv = NULL;
1064
1065         return drv;
1066 }
1067
1068 void iwl_drv_stop(struct iwl_drv *drv)
1069 {
1070         wait_for_completion(&drv->request_firmware_complete);
1071
1072         _iwl_op_mode_stop(drv);
1073
1074         iwl_dealloc_ucode(drv);
1075
1076         mutex_lock(&iwlwifi_opmode_table_mtx);
1077         /*
1078          * List is empty (this item wasn't added)
1079          * when firmware loading failed -- in that
1080          * case we can't remove it from any list.
1081          */
1082         if (!list_empty(&drv->list))
1083                 list_del(&drv->list);
1084         mutex_unlock(&iwlwifi_opmode_table_mtx);
1085
1086 #ifdef CONFIG_IWLWIFI_DEBUGFS
1087         debugfs_remove_recursive(drv->dbgfs_drv);
1088 #endif
1089
1090         kfree(drv);
1091 }
1092
1093
1094 /* shared module parameters */
1095 struct iwl_mod_params iwlwifi_mod_params = {
1096         .amsdu_size_8K = 1,
1097         .restart_fw = 1,
1098         .plcp_check = true,
1099         .bt_coex_active = true,
1100         .power_level = IWL_POWER_INDEX_1,
1101         .bt_ch_announce = true,
1102         .auto_agg = true,
1103         .wd_disable = true,
1104         /* the rest are 0 by default */
1105 };
1106 EXPORT_SYMBOL_GPL(iwlwifi_mod_params);
1107
1108 int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops)
1109 {
1110         int i;
1111         struct iwl_drv *drv;
1112         struct iwlwifi_opmode_table *op;
1113
1114         mutex_lock(&iwlwifi_opmode_table_mtx);
1115         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1116                 op = &iwlwifi_opmode_table[i];
1117                 if (strcmp(op->name, name))
1118                         continue;
1119                 op->ops = ops;
1120                 /* TODO: need to handle exceptional case */
1121                 list_for_each_entry(drv, &op->drv, list)
1122                         drv->op_mode = _iwl_op_mode_start(drv, op);
1123
1124                 mutex_unlock(&iwlwifi_opmode_table_mtx);
1125                 return 0;
1126         }
1127         mutex_unlock(&iwlwifi_opmode_table_mtx);
1128         return -EIO;
1129 }
1130 EXPORT_SYMBOL_GPL(iwl_opmode_register);
1131
1132 void iwl_opmode_deregister(const char *name)
1133 {
1134         int i;
1135         struct iwl_drv *drv;
1136
1137         mutex_lock(&iwlwifi_opmode_table_mtx);
1138         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1139                 if (strcmp(iwlwifi_opmode_table[i].name, name))
1140                         continue;
1141                 iwlwifi_opmode_table[i].ops = NULL;
1142
1143                 /* call the stop routine for all devices */
1144                 list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list)
1145                         _iwl_op_mode_stop(drv);
1146
1147                 mutex_unlock(&iwlwifi_opmode_table_mtx);
1148                 return;
1149         }
1150         mutex_unlock(&iwlwifi_opmode_table_mtx);
1151 }
1152 EXPORT_SYMBOL_GPL(iwl_opmode_deregister);
1153
1154 static int __init iwl_drv_init(void)
1155 {
1156         int i;
1157
1158         mutex_init(&iwlwifi_opmode_table_mtx);
1159
1160         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++)
1161                 INIT_LIST_HEAD(&iwlwifi_opmode_table[i].drv);
1162
1163         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
1164         pr_info(DRV_COPYRIGHT "\n");
1165
1166 #ifdef CONFIG_IWLWIFI_DEBUGFS
1167         /* Create the root of iwlwifi debugfs subsystem. */
1168         iwl_dbgfs_root = debugfs_create_dir(DRV_NAME, NULL);
1169
1170         if (!iwl_dbgfs_root)
1171                 return -EFAULT;
1172 #endif
1173
1174         return iwl_pci_register_driver();
1175 }
1176 module_init(iwl_drv_init);
1177
1178 static void __exit iwl_drv_exit(void)
1179 {
1180         iwl_pci_unregister_driver();
1181
1182 #ifdef CONFIG_IWLWIFI_DEBUGFS
1183         debugfs_remove_recursive(iwl_dbgfs_root);
1184 #endif
1185 }
1186 module_exit(iwl_drv_exit);
1187
1188 #ifdef CONFIG_IWLWIFI_DEBUG
1189 module_param_named(debug, iwlwifi_mod_params.debug_level, uint,
1190                    S_IRUGO | S_IWUSR);
1191 MODULE_PARM_DESC(debug, "debug output mask");
1192 #endif
1193
1194 module_param_named(swcrypto, iwlwifi_mod_params.sw_crypto, int, S_IRUGO);
1195 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1196 module_param_named(11n_disable, iwlwifi_mod_params.disable_11n, uint, S_IRUGO);
1197 MODULE_PARM_DESC(11n_disable,
1198         "disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
1199 module_param_named(amsdu_size_8K, iwlwifi_mod_params.amsdu_size_8K,
1200                    int, S_IRUGO);
1201 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
1202 module_param_named(fw_restart, iwlwifi_mod_params.restart_fw, int, S_IRUGO);
1203 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
1204
1205 module_param_named(antenna_coupling, iwlwifi_mod_params.ant_coupling,
1206                    int, S_IRUGO);
1207 MODULE_PARM_DESC(antenna_coupling,
1208                  "specify antenna coupling in dB (defualt: 0 dB)");
1209
1210 module_param_named(bt_ch_inhibition, iwlwifi_mod_params.bt_ch_announce,
1211                    bool, S_IRUGO);
1212 MODULE_PARM_DESC(bt_ch_inhibition,
1213                  "Enable BT channel inhibition (default: enable)");
1214
1215 module_param_named(plcp_check, iwlwifi_mod_params.plcp_check, bool, S_IRUGO);
1216 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
1217
1218 module_param_named(wd_disable, iwlwifi_mod_params.wd_disable, int, S_IRUGO);
1219 MODULE_PARM_DESC(wd_disable,
1220                 "Disable stuck queue watchdog timer 0=system default, "
1221                 "1=disable, 2=enable (default: 0)");
1222
1223 /*
1224  * set bt_coex_active to true, uCode will do kill/defer
1225  * every time the priority line is asserted (BT is sending signals on the
1226  * priority line in the PCIx).
1227  * set bt_coex_active to false, uCode will ignore the BT activity and
1228  * perform the normal operation
1229  *
1230  * User might experience transmit issue on some platform due to WiFi/BT
1231  * co-exist problem. The possible behaviors are:
1232  *   Able to scan and finding all the available AP
1233  *   Not able to associate with any AP
1234  * On those platforms, WiFi communication can be restored by set
1235  * "bt_coex_active" module parameter to "false"
1236  *
1237  * default: bt_coex_active = true (BT_COEX_ENABLE)
1238  */
1239 module_param_named(bt_coex_active, iwlwifi_mod_params.bt_coex_active,
1240                 bool, S_IRUGO);
1241 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1242
1243 module_param_named(led_mode, iwlwifi_mod_params.led_mode, int, S_IRUGO);
1244 MODULE_PARM_DESC(led_mode, "0=system default, "
1245                 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1246
1247 module_param_named(power_save, iwlwifi_mod_params.power_save,
1248                 bool, S_IRUGO);
1249 MODULE_PARM_DESC(power_save,
1250                  "enable WiFi power management (default: disable)");
1251
1252 module_param_named(power_level, iwlwifi_mod_params.power_level,
1253                 int, S_IRUGO);
1254 MODULE_PARM_DESC(power_level,
1255                  "default power save level (range from 1 - 5, default: 1)");
1256
1257 module_param_named(auto_agg, iwlwifi_mod_params.auto_agg,
1258                 bool, S_IRUGO);
1259 MODULE_PARM_DESC(auto_agg,
1260                  "enable agg w/o check traffic load (default: enable)");
1261
1262 module_param_named(5ghz_disable, iwlwifi_mod_params.disable_5ghz,
1263                 bool, S_IRUGO);
1264 MODULE_PARM_DESC(5ghz_disable, "disable 5GHz band (default: 0 [enabled])");