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