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 - 2013 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 - 2013 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 enum {
 143         DVM_OP_MODE =   0,
 144         MVM_OP_MODE =   1,
 145 };
 146
 147 /* Protects the table contents, i.e. the ops pointer & drv list */
 148 static struct mutex iwlwifi_opmode_table_mtx;
 149 static struct iwlwifi_opmode_table {
 150         const char *name;                       /* name: iwldvm, iwlmvm, etc */
 151         const struct iwl_op_mode_ops *ops;      /* pointer to op_mode ops */
 152         struct list_head drv;           /* list of devices using this op_mode */
 153 } iwlwifi_opmode_table[] = {            /* ops set when driver is initialized */
 154         [DVM_OP_MODE] = { .name = "iwldvm", .ops = NULL },
 155         [MVM_OP_MODE] = { .name = "iwlmvm", .ops = NULL },
 156 };
 157
 158 /*
 159  * struct fw_sec: Just for the image parsing proccess.
 160  * For the fw storage we are using struct fw_desc.
 161  */
 162 struct fw_sec {
 163         const void *data;               /* the sec data */
 164         size_t size;                    /* section size */
 165         u32 offset;                     /* offset of writing in the device */
 166 };
 167
 168 static void iwl_free_fw_desc(struct iwl_drv *drv, struct fw_desc *desc)
 169 {
 170         vfree(desc->data);
 171         desc->data = NULL;
 172         desc->len = 0;
 173 }
 174
 175 static void iwl_free_fw_img(struct iwl_drv *drv, struct fw_img *img)
 176 {
 177         int i;
 178         for (i = 0; i < IWL_UCODE_SECTION_MAX; i++)
 179                 iwl_free_fw_desc(drv, &img->sec[i]);
 180 }
 181
 182 static void iwl_dealloc_ucode(struct iwl_drv *drv)
 183 {
 184         int i;
 185         for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
 186                 iwl_free_fw_img(drv, drv->fw.img + i);
 187 }
 188
 189 static int iwl_alloc_fw_desc(struct iwl_drv *drv, struct fw_desc *desc,
 190                              struct fw_sec *sec)
 191 {
 192         void *data;
 193
 194         desc->data = NULL;
 195
 196         if (!sec || !sec->size)
 197                 return -EINVAL;
 198
 199         data = vmalloc(sec->size);
 200         if (!data)
 201                 return -ENOMEM;
 202
 203         desc->len = sec->size;
 204         desc->offset = sec->offset;
 205         memcpy(data, sec->data, desc->len);
 206         desc->data = data;
 207
 208         return 0;
 209 }
 210
 211 static void iwl_req_fw_callback(const struct firmware *ucode_raw,
 212                                 void *context);
 213
 214 #define UCODE_EXPERIMENTAL_INDEX        100
 215 #define UCODE_EXPERIMENTAL_TAG          "exp"
 216
 217 static int iwl_request_firmware(struct iwl_drv *drv, bool first)
 218 {
 219         const char *name_pre = drv->cfg->fw_name_pre;
 220         char tag[8];
 221
 222         if (first) {
 223 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
 224                 drv->fw_index = UCODE_EXPERIMENTAL_INDEX;
 225                 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
 226         } else if (drv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
 227 #endif
 228                 drv->fw_index = drv->cfg->ucode_api_max;
 229                 sprintf(tag, "%d", drv->fw_index);
 230         } else {
 231                 drv->fw_index--;
 232                 sprintf(tag, "%d", drv->fw_index);
 233         }
 234
 235         if (drv->fw_index < drv->cfg->ucode_api_min) {
 236                 IWL_ERR(drv, "no suitable firmware found!\n");
 237                 return -ENOENT;
 238         }
 239
 240         sprintf(drv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
 241
 242         IWL_DEBUG_INFO(drv, "attempting to load firmware %s'%s'\n",
 243                        (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 244                                 ? "EXPERIMENTAL " : "",
 245                        drv->firmware_name);
 246
 247         return request_firmware_nowait(THIS_MODULE, 1, drv->firmware_name,
 248                                        drv->trans->dev,
 249                                        GFP_KERNEL, drv, iwl_req_fw_callback);
 250 }
 251
 252 struct fw_img_parsing {
 253         struct fw_sec sec[IWL_UCODE_SECTION_MAX];
 254         int sec_counter;
 255 };
 256
 257 /*
 258  * struct fw_sec_parsing: to extract fw section and it's offset from tlv
 259  */
 260 struct fw_sec_parsing {
 261         __le32 offset;
 262         const u8 data[];
 263 } __packed;
 264
 265 /**
 266  * struct iwl_tlv_calib_data - parse the default calib data from TLV
 267  *
 268  * @ucode_type: the uCode to which the following default calib relates.
 269  * @calib: default calibrations.
 270  */
 271 struct iwl_tlv_calib_data {
 272         __le32 ucode_type;
 273         struct iwl_tlv_calib_ctrl calib;
 274 } __packed;
 275
 276 struct iwl_firmware_pieces {
 277         struct fw_img_parsing img[IWL_UCODE_TYPE_MAX];
 278
 279         u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
 280         u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
 281 };
 282
 283 /*
 284  * These functions are just to extract uCode section data from the pieces
 285  * structure.
 286  */
 287 static struct fw_sec *get_sec(struct iwl_firmware_pieces *pieces,
 288                               enum iwl_ucode_type type,
 289                               int  sec)
 290 {
 291         return &pieces->img[type].sec[sec];
 292 }
 293
 294 static void set_sec_data(struct iwl_firmware_pieces *pieces,
 295                          enum iwl_ucode_type type,
 296                          int sec,
 297                          const void *data)
 298 {
 299         pieces->img[type].sec[sec].data = data;
 300 }
 301
 302 static void set_sec_size(struct iwl_firmware_pieces *pieces,
 303                          enum iwl_ucode_type type,
 304                          int sec,
 305                          size_t size)
 306 {
 307         pieces->img[type].sec[sec].size = size;
 308 }
 309
 310 static size_t get_sec_size(struct iwl_firmware_pieces *pieces,
 311                            enum iwl_ucode_type type,
 312                            int sec)
 313 {
 314         return pieces->img[type].sec[sec].size;
 315 }
 316
 317 static void set_sec_offset(struct iwl_firmware_pieces *pieces,
 318                            enum iwl_ucode_type type,
 319                            int sec,
 320                            u32 offset)
 321 {
 322         pieces->img[type].sec[sec].offset = offset;
 323 }
 324
 325 /*
 326  * Gets uCode section from tlv.
 327  */
 328 static int iwl_store_ucode_sec(struct iwl_firmware_pieces *pieces,
 329                                const void *data, enum iwl_ucode_type type,
 330                                int size)
 331 {
 332         struct fw_img_parsing *img;
 333         struct fw_sec *sec;
 334         struct fw_sec_parsing *sec_parse;
 335
 336         if (WARN_ON(!pieces || !data || type >= IWL_UCODE_TYPE_MAX))
 337                 return -1;
 338
 339         sec_parse = (struct fw_sec_parsing *)data;
 340
 341         img = &pieces->img[type];
 342         sec = &img->sec[img->sec_counter];
 343
 344         sec->offset = le32_to_cpu(sec_parse->offset);
 345         sec->data = sec_parse->data;
 346         sec->size = size - sizeof(sec_parse->offset);
 347
 348         ++img->sec_counter;
 349
 350         return 0;
 351 }
 352
 353 static int iwl_set_default_calib(struct iwl_drv *drv, const u8 *data)
 354 {
 355         struct iwl_tlv_calib_data *def_calib =
 356                                         (struct iwl_tlv_calib_data *)data;
 357         u32 ucode_type = le32_to_cpu(def_calib->ucode_type);
 358         if (ucode_type >= IWL_UCODE_TYPE_MAX) {
 359                 IWL_ERR(drv, "Wrong ucode_type %u for default calibration.\n",
 360                         ucode_type);
 361                 return -EINVAL;
 362         }
 363         drv->fw.default_calib[ucode_type].flow_trigger =
 364                 def_calib->calib.flow_trigger;
 365         drv->fw.default_calib[ucode_type].event_trigger =
 366                 def_calib->calib.event_trigger;
 367
 368         return 0;
 369 }
 370
 371 static int iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
 372                                     const struct firmware *ucode_raw,
 373                                     struct iwl_firmware_pieces *pieces)
 374 {
 375         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
 376         u32 api_ver, hdr_size, build;
 377         char buildstr[25];
 378         const u8 *src;
 379
 380         drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
 381         api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
 382
 383         switch (api_ver) {
 384         default:
 385                 hdr_size = 28;
 386                 if (ucode_raw->size < hdr_size) {
 387                         IWL_ERR(drv, "File size too small!\n");
 388                         return -EINVAL;
 389                 }
 390                 build = le32_to_cpu(ucode->u.v2.build);
 391                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 392                              le32_to_cpu(ucode->u.v2.inst_size));
 393                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 394                              le32_to_cpu(ucode->u.v2.data_size));
 395                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 396                              le32_to_cpu(ucode->u.v2.init_size));
 397                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 398                              le32_to_cpu(ucode->u.v2.init_data_size));
 399                 src = ucode->u.v2.data;
 400                 break;
 401         case 0:
 402         case 1:
 403         case 2:
 404                 hdr_size = 24;
 405                 if (ucode_raw->size < hdr_size) {
 406                         IWL_ERR(drv, "File size too small!\n");
 407                         return -EINVAL;
 408                 }
 409                 build = 0;
 410                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 411                              le32_to_cpu(ucode->u.v1.inst_size));
 412                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 413                              le32_to_cpu(ucode->u.v1.data_size));
 414                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 415                              le32_to_cpu(ucode->u.v1.init_size));
 416                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 417                              le32_to_cpu(ucode->u.v1.init_data_size));
 418                 src = ucode->u.v1.data;
 419                 break;
 420         }
 421
 422         if (build)
 423                 sprintf(buildstr, " build %u%s", build,
 424                        (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 425                                 ? " (EXP)" : "");
 426         else
 427                 buildstr[0] = '\0';
 428
 429         snprintf(drv->fw.fw_version,
 430                  sizeof(drv->fw.fw_version),
 431                  "%u.%u.%u.%u%s",
 432                  IWL_UCODE_MAJOR(drv->fw.ucode_ver),
 433                  IWL_UCODE_MINOR(drv->fw.ucode_ver),
 434                  IWL_UCODE_API(drv->fw.ucode_ver),
 435                  IWL_UCODE_SERIAL(drv->fw.ucode_ver),
 436                  buildstr);
 437
 438         /* Verify size of file vs. image size info in file's header */
 439
 440         if (ucode_raw->size != hdr_size +
 441             get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) +
 442             get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) +
 443             get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) +
 444             get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)) {
 445
 446                 IWL_ERR(drv,
 447                         "uCode file size %d does not match expected size\n",
 448                         (int)ucode_raw->size);
 449                 return -EINVAL;
 450         }
 451
 452
 453         set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, src);
 454         src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST);
 455         set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 456                        IWLAGN_RTC_INST_LOWER_BOUND);
 457         set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, src);
 458         src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA);
 459         set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 460                        IWLAGN_RTC_DATA_LOWER_BOUND);
 461         set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, src);
 462         src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST);
 463         set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 464                        IWLAGN_RTC_INST_LOWER_BOUND);
 465         set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, src);
 466         src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA);
 467         set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 468                        IWLAGN_RTC_DATA_LOWER_BOUND);
 469         return 0;
 470 }
 471
 472 static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
 473                                 const struct firmware *ucode_raw,
 474                                 struct iwl_firmware_pieces *pieces,
 475                                 struct iwl_ucode_capabilities *capa)
 476 {
 477         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
 478         struct iwl_ucode_tlv *tlv;
 479         size_t len = ucode_raw->size;
 480         const u8 *data;
 481         u32 tlv_len;
 482         enum iwl_ucode_tlv_type tlv_type;
 483         const u8 *tlv_data;
 484         char buildstr[25];
 485         u32 build;
 486
 487         if (len < sizeof(*ucode)) {
 488                 IWL_ERR(drv, "uCode has invalid length: %zd\n", len);
 489                 return -EINVAL;
 490         }
 491
 492         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
 493                 IWL_ERR(drv, "invalid uCode magic: 0X%x\n",
 494                         le32_to_cpu(ucode->magic));
 495                 return -EINVAL;
 496         }
 497
 498         drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
 499         build = le32_to_cpu(ucode->build);
 500
 501         if (build)
 502                 sprintf(buildstr, " build %u%s", build,
 503                        (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 504                                 ? " (EXP)" : "");
 505         else
 506                 buildstr[0] = '\0';
 507
 508         snprintf(drv->fw.fw_version,
 509                  sizeof(drv->fw.fw_version),
 510                  "%u.%u.%u.%u%s",
 511                  IWL_UCODE_MAJOR(drv->fw.ucode_ver),
 512                  IWL_UCODE_MINOR(drv->fw.ucode_ver),
 513                  IWL_UCODE_API(drv->fw.ucode_ver),
 514                  IWL_UCODE_SERIAL(drv->fw.ucode_ver),
 515                  buildstr);
 516
 517         data = ucode->data;
 518
 519         len -= sizeof(*ucode);
 520
 521         while (len >= sizeof(*tlv)) {
 522                 len -= sizeof(*tlv);
 523                 tlv = (void *)data;
 524
 525                 tlv_len = le32_to_cpu(tlv->length);
 526                 tlv_type = le32_to_cpu(tlv->type);
 527                 tlv_data = tlv->data;
 528
 529                 if (len < tlv_len) {
 530                         IWL_ERR(drv, "invalid TLV len: %zd/%u\n",
 531                                 len, tlv_len);
 532                         return -EINVAL;
 533                 }
 534                 len -= ALIGN(tlv_len, 4);
 535                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
 536
 537                 switch (tlv_type) {
 538                 case IWL_UCODE_TLV_INST:
 539                         set_sec_data(pieces, IWL_UCODE_REGULAR,
 540                                      IWL_UCODE_SECTION_INST, tlv_data);
 541                         set_sec_size(pieces, IWL_UCODE_REGULAR,
 542                                      IWL_UCODE_SECTION_INST, tlv_len);
 543                         set_sec_offset(pieces, IWL_UCODE_REGULAR,
 544                                        IWL_UCODE_SECTION_INST,
 545                                        IWLAGN_RTC_INST_LOWER_BOUND);
 546                         break;
 547                 case IWL_UCODE_TLV_DATA:
 548                         set_sec_data(pieces, IWL_UCODE_REGULAR,
 549                                      IWL_UCODE_SECTION_DATA, tlv_data);
 550                         set_sec_size(pieces, IWL_UCODE_REGULAR,
 551                                      IWL_UCODE_SECTION_DATA, tlv_len);
 552                         set_sec_offset(pieces, IWL_UCODE_REGULAR,
 553                                        IWL_UCODE_SECTION_DATA,
 554                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 555                         break;
 556                 case IWL_UCODE_TLV_INIT:
 557                         set_sec_data(pieces, IWL_UCODE_INIT,
 558                                      IWL_UCODE_SECTION_INST, tlv_data);
 559                         set_sec_size(pieces, IWL_UCODE_INIT,
 560                                      IWL_UCODE_SECTION_INST, tlv_len);
 561                         set_sec_offset(pieces, IWL_UCODE_INIT,
 562                                        IWL_UCODE_SECTION_INST,
 563                                        IWLAGN_RTC_INST_LOWER_BOUND);
 564                         break;
 565                 case IWL_UCODE_TLV_INIT_DATA:
 566                         set_sec_data(pieces, IWL_UCODE_INIT,
 567                                      IWL_UCODE_SECTION_DATA, tlv_data);
 568                         set_sec_size(pieces, IWL_UCODE_INIT,
 569                                      IWL_UCODE_SECTION_DATA, tlv_len);
 570                         set_sec_offset(pieces, IWL_UCODE_INIT,
 571                                        IWL_UCODE_SECTION_DATA,
 572                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 573                         break;
 574                 case IWL_UCODE_TLV_BOOT:
 575                         IWL_ERR(drv, "Found unexpected BOOT ucode\n");
 576                         break;
 577                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
 578                         if (tlv_len != sizeof(u32))
 579                                 goto invalid_tlv_len;
 580                         capa->max_probe_length =
 581                                         le32_to_cpup((__le32 *)tlv_data);
 582                         break;
 583                 case IWL_UCODE_TLV_PAN:
 584                         if (tlv_len)
 585                                 goto invalid_tlv_len;
 586                         capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
 587                         break;
 588                 case IWL_UCODE_TLV_FLAGS:
 589                         /* must be at least one u32 */
 590                         if (tlv_len < sizeof(u32))
 591                                 goto invalid_tlv_len;
 592                         /* and a proper number of u32s */
 593                         if (tlv_len % sizeof(u32))
 594                                 goto invalid_tlv_len;
 595                         /*
 596                          * This driver only reads the first u32 as
 597                          * right now no more features are defined,
 598                          * if that changes then either the driver
 599                          * will not work with the new firmware, or
 600                          * it'll not take advantage of new features.
 601                          */
 602                         capa->flags = le32_to_cpup((__le32 *)tlv_data);
 603                         break;
 604                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
 605                         if (tlv_len != sizeof(u32))
 606                                 goto invalid_tlv_len;
 607                         pieces->init_evtlog_ptr =
 608                                         le32_to_cpup((__le32 *)tlv_data);
 609                         break;
 610                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
 611                         if (tlv_len != sizeof(u32))
 612                                 goto invalid_tlv_len;
 613                         pieces->init_evtlog_size =
 614                                         le32_to_cpup((__le32 *)tlv_data);
 615                         break;
 616                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
 617                         if (tlv_len != sizeof(u32))
 618                                 goto invalid_tlv_len;
 619                         pieces->init_errlog_ptr =
 620                                         le32_to_cpup((__le32 *)tlv_data);
 621                         break;
 622                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
 623                         if (tlv_len != sizeof(u32))
 624                                 goto invalid_tlv_len;
 625                         pieces->inst_evtlog_ptr =
 626                                         le32_to_cpup((__le32 *)tlv_data);
 627                         break;
 628                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
 629                         if (tlv_len != sizeof(u32))
 630                                 goto invalid_tlv_len;
 631                         pieces->inst_evtlog_size =
 632                                         le32_to_cpup((__le32 *)tlv_data);
 633                         break;
 634                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
 635                         if (tlv_len != sizeof(u32))
 636                                 goto invalid_tlv_len;
 637                         pieces->inst_errlog_ptr =
 638                                         le32_to_cpup((__le32 *)tlv_data);
 639                         break;
 640                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
 641                         if (tlv_len)
 642                                 goto invalid_tlv_len;
 643                         drv->fw.enhance_sensitivity_table = true;
 644                         break;
 645                 case IWL_UCODE_TLV_WOWLAN_INST:
 646                         set_sec_data(pieces, IWL_UCODE_WOWLAN,
 647                                      IWL_UCODE_SECTION_INST, tlv_data);
 648                         set_sec_size(pieces, IWL_UCODE_WOWLAN,
 649                                      IWL_UCODE_SECTION_INST, tlv_len);
 650                         set_sec_offset(pieces, IWL_UCODE_WOWLAN,
 651                                        IWL_UCODE_SECTION_INST,
 652                                        IWLAGN_RTC_INST_LOWER_BOUND);
 653                         break;
 654                 case IWL_UCODE_TLV_WOWLAN_DATA:
 655                         set_sec_data(pieces, IWL_UCODE_WOWLAN,
 656                                      IWL_UCODE_SECTION_DATA, tlv_data);
 657                         set_sec_size(pieces, IWL_UCODE_WOWLAN,
 658                                      IWL_UCODE_SECTION_DATA, tlv_len);
 659                         set_sec_offset(pieces, IWL_UCODE_WOWLAN,
 660                                        IWL_UCODE_SECTION_DATA,
 661                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 662                         break;
 663                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
 664                         if (tlv_len != sizeof(u32))
 665                                 goto invalid_tlv_len;
 666                         capa->standard_phy_calibration_size =
 667                                         le32_to_cpup((__le32 *)tlv_data);
 668                         break;
 669                  case IWL_UCODE_TLV_SEC_RT:
 670                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
 671                                             tlv_len);
 672                         drv->fw.mvm_fw = true;
 673                         break;
 674                 case IWL_UCODE_TLV_SEC_INIT:
 675                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
 676                                             tlv_len);
 677                         drv->fw.mvm_fw = true;
 678                         break;
 679                 case IWL_UCODE_TLV_SEC_WOWLAN:
 680                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
 681                                             tlv_len);
 682                         drv->fw.mvm_fw = true;
 683                         break;
 684                 case IWL_UCODE_TLV_DEF_CALIB:
 685                         if (tlv_len != sizeof(struct iwl_tlv_calib_data))
 686                                 goto invalid_tlv_len;
 687                         if (iwl_set_default_calib(drv, tlv_data))
 688                                 goto tlv_error;
 689                         break;
 690                 case IWL_UCODE_TLV_PHY_SKU:
 691                         if (tlv_len != sizeof(u32))
 692                                 goto invalid_tlv_len;
 693                         drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data);
 694                         break;
 695                 default:
 696                         IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
 697                         break;
 698                 }
 699         }
 700
 701         if (len) {
 702                 IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
 703                 iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len);
 704                 return -EINVAL;
 705         }
 706
 707         return 0;
 708
 709  invalid_tlv_len:
 710         IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
 711  tlv_error:
 712         iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);
 713
 714         return -EINVAL;
 715 }
 716
 717 static int iwl_alloc_ucode(struct iwl_drv *drv,
 718                            struct iwl_firmware_pieces *pieces,
 719                            enum iwl_ucode_type type)
 720 {
 721         int i;
 722         for (i = 0;
 723              i < IWL_UCODE_SECTION_MAX && get_sec_size(pieces, type, i);
 724              i++)
 725                 if (iwl_alloc_fw_desc(drv, &(drv->fw.img[type].sec[i]),
 726                                       get_sec(pieces, type, i)))
 727                         return -ENOMEM;
 728         return 0;
 729 }
 730
 731 static int validate_sec_sizes(struct iwl_drv *drv,
 732                               struct iwl_firmware_pieces *pieces,
 733                               const struct iwl_cfg *cfg)
 734 {
 735         IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %Zd\n",
 736                 get_sec_size(pieces, IWL_UCODE_REGULAR,
 737                              IWL_UCODE_SECTION_INST));
 738         IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %Zd\n",
 739                 get_sec_size(pieces, IWL_UCODE_REGULAR,
 740                              IWL_UCODE_SECTION_DATA));
 741         IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %Zd\n",
 742                 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST));
 743         IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %Zd\n",
 744                 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA));
 745
 746         /* Verify that uCode images will fit in card's SRAM. */
 747         if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
 748                                                         cfg->max_inst_size) {
 749                 IWL_ERR(drv, "uCode instr len %Zd too large to fit in\n",
 750                         get_sec_size(pieces, IWL_UCODE_REGULAR,
 751                                                 IWL_UCODE_SECTION_INST));
 752                 return -1;
 753         }
 754
 755         if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
 756                                                         cfg->max_data_size) {
 757                 IWL_ERR(drv, "uCode data len %Zd too large to fit in\n",
 758                         get_sec_size(pieces, IWL_UCODE_REGULAR,
 759                                                 IWL_UCODE_SECTION_DATA));
 760                 return -1;
 761         }
 762
 763          if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) >
 764                                                         cfg->max_inst_size) {
 765                 IWL_ERR(drv, "uCode init instr len %Zd too large to fit in\n",
 766                         get_sec_size(pieces, IWL_UCODE_INIT,
 767                                                 IWL_UCODE_SECTION_INST));
 768                 return -1;
 769         }
 770
 771         if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA) >
 772                                                         cfg->max_data_size) {
 773                 IWL_ERR(drv, "uCode init data len %Zd too large to fit in\n",
 774                         get_sec_size(pieces, IWL_UCODE_REGULAR,
 775                                                 IWL_UCODE_SECTION_DATA));
 776                 return -1;
 777         }
 778         return 0;
 779 }
 780
 781 static struct iwl_op_mode *
 782 _iwl_op_mode_start(struct iwl_drv *drv, struct iwlwifi_opmode_table *op)
 783 {
 784         const struct iwl_op_mode_ops *ops = op->ops;
 785         struct dentry *dbgfs_dir = NULL;
 786         struct iwl_op_mode *op_mode = NULL;
 787
 788 #ifdef CONFIG_IWLWIFI_DEBUGFS
 789         drv->dbgfs_op_mode = debugfs_create_dir(op->name,
 790                                                 drv->dbgfs_drv);
 791         if (!drv->dbgfs_op_mode) {
 792                 IWL_ERR(drv,
 793                         "failed to create opmode debugfs directory\n");
 794                 return op_mode;
 795         }
 796         dbgfs_dir = drv->dbgfs_op_mode;
 797 #endif
 798
 799         op_mode = ops->start(drv->trans, drv->cfg, &drv->fw, dbgfs_dir);
 800
 801 #ifdef CONFIG_IWLWIFI_DEBUGFS
 802         if (!op_mode) {
 803                 debugfs_remove_recursive(drv->dbgfs_op_mode);
 804                 drv->dbgfs_op_mode = NULL;
 805         }
 806 #endif
 807
 808         return op_mode;
 809 }
 810
 811 static void _iwl_op_mode_stop(struct iwl_drv *drv)
 812 {
 813         /* op_mode can be NULL if its start failed */
 814         if (drv->op_mode) {
 815                 iwl_op_mode_stop(drv->op_mode);
 816                 drv->op_mode = NULL;
 817
 818 #ifdef CONFIG_IWLWIFI_DEBUGFS
 819                 debugfs_remove_recursive(drv->dbgfs_op_mode);
 820                 drv->dbgfs_op_mode = NULL;
 821 #endif
 822         }
 823 }
 824
 825 /**
 826  * iwl_req_fw_callback - callback when firmware was loaded
 827  *
 828  * If loaded successfully, copies the firmware into buffers
 829  * for the card to fetch (via DMA).
 830  */
 831 static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
 832 {
 833         struct iwl_drv *drv = context;
 834         struct iwl_fw *fw = &drv->fw;
 835         struct iwl_ucode_header *ucode;
 836         struct iwlwifi_opmode_table *op;
 837         int err;
 838         struct iwl_firmware_pieces pieces;
 839         const unsigned int api_max = drv->cfg->ucode_api_max;
 840         unsigned int api_ok = drv->cfg->ucode_api_ok;
 841         const unsigned int api_min = drv->cfg->ucode_api_min;
 842         u32 api_ver;
 843         int i;
 844         bool load_module = false;
 845
 846         fw->ucode_capa.max_probe_length = 200;
 847         fw->ucode_capa.standard_phy_calibration_size =
 848                         IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
 849
 850         if (!api_ok)
 851                 api_ok = api_max;
 852
 853         memset(&pieces, 0, sizeof(pieces));
 854
 855         if (!ucode_raw) {
 856                 if (drv->fw_index <= api_ok)
 857                         IWL_ERR(drv,
 858                                 "request for firmware file '%s' failed.\n",
 859                                 drv->firmware_name);
 860                 goto try_again;
 861         }
 862
 863         IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
 864                        drv->firmware_name, ucode_raw->size);
 865
 866         /* Make sure that we got at least the API version number */
 867         if (ucode_raw->size < 4) {
 868                 IWL_ERR(drv, "File size way too small!\n");
 869                 goto try_again;
 870         }
 871
 872         /* Data from ucode file:  header followed by uCode images */
 873         ucode = (struct iwl_ucode_header *)ucode_raw->data;
 874
 875         if (ucode->ver)
 876                 err = iwl_parse_v1_v2_firmware(drv, ucode_raw, &pieces);
 877         else
 878                 err = iwl_parse_tlv_firmware(drv, ucode_raw, &pieces,
 879                                            &fw->ucode_capa);
 880
 881         if (err)
 882                 goto try_again;
 883
 884         api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
 885
 886         /*
 887          * api_ver should match the api version forming part of the
 888          * firmware filename ... but we don't check for that and only rely
 889          * on the API version read from firmware header from here on forward
 890          */
 891         /* no api version check required for experimental uCode */
 892         if (drv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
 893                 if (api_ver < api_min || api_ver > api_max) {
 894                         IWL_ERR(drv,
 895                                 "Driver unable to support your firmware API. "
 896                                 "Driver supports v%u, firmware is v%u.\n",
 897                                 api_max, api_ver);
 898                         goto try_again;
 899                 }
 900
 901                 if (api_ver < api_ok) {
 902                         if (api_ok != api_max)
 903                                 IWL_ERR(drv, "Firmware has old API version, "
 904                                         "expected v%u through v%u, got v%u.\n",
 905                                         api_ok, api_max, api_ver);
 906                         else
 907                                 IWL_ERR(drv, "Firmware has old API version, "
 908                                         "expected v%u, got v%u.\n",
 909                                         api_max, api_ver);
 910                         IWL_ERR(drv, "New firmware can be obtained from "
 911                                       "http://www.intellinuxwireless.org/.\n");
 912                 }
 913         }
 914
 915         IWL_INFO(drv, "loaded firmware version %s", drv->fw.fw_version);
 916
 917         /*
 918          * In mvm uCode there is no difference between data and instructions
 919          * sections.
 920          */
 921         if (!fw->mvm_fw && validate_sec_sizes(drv, &pieces, drv->cfg))
 922                 goto try_again;
 923
 924         /* Allocate ucode buffers for card's bus-master loading ... */
 925
 926         /* Runtime instructions and 2 copies of data:
 927          * 1) unmodified from disk
 928          * 2) backup cache for save/restore during power-downs */
 929         for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
 930                 if (iwl_alloc_ucode(drv, &pieces, i))
 931                         goto out_free_fw;
 932
 933         /* Now that we can no longer fail, copy information */
 934
 935         /*
 936          * The (size - 16) / 12 formula is based on the information recorded
 937          * for each event, which is of mode 1 (including timestamp) for all
 938          * new microcodes that include this information.
 939          */
 940         fw->init_evtlog_ptr = pieces.init_evtlog_ptr;
 941         if (pieces.init_evtlog_size)
 942                 fw->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
 943         else
 944                 fw->init_evtlog_size =
 945                         drv->cfg->base_params->max_event_log_size;
 946         fw->init_errlog_ptr = pieces.init_errlog_ptr;
 947         fw->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
 948         if (pieces.inst_evtlog_size)
 949                 fw->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
 950         else
 951                 fw->inst_evtlog_size =
 952                         drv->cfg->base_params->max_event_log_size;
 953         fw->inst_errlog_ptr = pieces.inst_errlog_ptr;
 954
 955         /*
 956          * figure out the offset of chain noise reset and gain commands
 957          * base on the size of standard phy calibration commands table size
 958          */
 959         if (fw->ucode_capa.standard_phy_calibration_size >
 960             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
 961                 fw->ucode_capa.standard_phy_calibration_size =
 962                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
 963
 964         /* We have our copies now, allow OS release its copies */
 965         release_firmware(ucode_raw);
 966
 967         mutex_lock(&iwlwifi_opmode_table_mtx);
 968         if (fw->mvm_fw)
 969                 op = &iwlwifi_opmode_table[MVM_OP_MODE];
 970         else
 971                 op = &iwlwifi_opmode_table[DVM_OP_MODE];
 972
 973         /* add this device to the list of devices using this op_mode */
 974         list_add_tail(&drv->list, &op->drv);
 975
 976         if (op->ops) {
 977                 drv->op_mode = _iwl_op_mode_start(drv, op);
 978
 979                 if (!drv->op_mode) {
 980                         mutex_unlock(&iwlwifi_opmode_table_mtx);
 981                         goto out_unbind;
 982                 }
 983         } else {
 984                 load_module = true;
 985         }
 986         mutex_unlock(&iwlwifi_opmode_table_mtx);
 987
 988         /*
 989          * Complete the firmware request last so that
 990          * a driver unbind (stop) doesn't run while we
 991          * are doing the start() above.
 992          */
 993         complete(&drv->request_firmware_complete);
 994
 995         /*
 996          * Load the module last so we don't block anything
 997          * else from proceeding if the module fails to load
 998          * or hangs loading.
 999          */
1000         if (load_module)
1001                 request_module("%s", op->name);
1002         return;
1003
1004  try_again:
1005         /* try next, if any */
1006         release_firmware(ucode_raw);
1007         if (iwl_request_firmware(drv, false))
1008                 goto out_unbind;
1009         return;
1010
1011  out_free_fw:
1012         IWL_ERR(drv, "failed to allocate pci memory\n");
1013         iwl_dealloc_ucode(drv);
1014         release_firmware(ucode_raw);
1015  out_unbind:
1016         complete(&drv->request_firmware_complete);
1017         device_release_driver(drv->trans->dev);
1018 }
1019
1020 struct iwl_drv *iwl_drv_start(struct iwl_trans *trans,
1021                               const struct iwl_cfg *cfg)
1022 {
1023         struct iwl_drv *drv;
1024         int ret;
1025
1026         drv = kzalloc(sizeof(*drv), GFP_KERNEL);
1027         if (!drv)
1028                 return NULL;
1029
1030         drv->trans = trans;
1031         drv->dev = trans->dev;
1032         drv->cfg = cfg;
1033
1034         init_completion(&drv->request_firmware_complete);
1035         INIT_LIST_HEAD(&drv->list);
1036
1037 #ifdef CONFIG_IWLWIFI_DEBUGFS
1038         /* Create the device debugfs entries. */
1039         drv->dbgfs_drv = debugfs_create_dir(dev_name(trans->dev),
1040                                             iwl_dbgfs_root);
1041
1042         if (!drv->dbgfs_drv) {
1043                 IWL_ERR(drv, "failed to create debugfs directory\n");
1044                 ret = -ENOMEM;
1045                 goto err_free_drv;
1046         }
1047
1048         /* Create transport layer debugfs dir */
1049         drv->trans->dbgfs_dir = debugfs_create_dir("trans", drv->dbgfs_drv);
1050
1051         if (!drv->trans->dbgfs_dir) {
1052                 IWL_ERR(drv, "failed to create transport debugfs directory\n");
1053                 ret = -ENOMEM;
1054                 goto err_free_dbgfs;
1055         }
1056 #endif
1057
1058         ret = iwl_request_firmware(drv, true);
1059         if (ret) {
1060                 IWL_ERR(trans, "Couldn't request the fw\n");
1061                 goto err_fw;
1062         }
1063
1064         return drv;
1065
1066 err_fw:
1067 #ifdef CONFIG_IWLWIFI_DEBUGFS
1068 err_free_dbgfs:
1069         debugfs_remove_recursive(drv->dbgfs_drv);
1070 err_free_drv:
1071 #endif
1072         kfree(drv);
1073
1074         return ERR_PTR(ret);
1075 }
1076
1077 void iwl_drv_stop(struct iwl_drv *drv)
1078 {
1079         wait_for_completion(&drv->request_firmware_complete);
1080
1081         _iwl_op_mode_stop(drv);
1082
1083         iwl_dealloc_ucode(drv);
1084
1085         mutex_lock(&iwlwifi_opmode_table_mtx);
1086         /*
1087          * List is empty (this item wasn't added)
1088          * when firmware loading failed -- in that
1089          * case we can't remove it from any list.
1090          */
1091         if (!list_empty(&drv->list))
1092                 list_del(&drv->list);
1093         mutex_unlock(&iwlwifi_opmode_table_mtx);
1094
1095 #ifdef CONFIG_IWLWIFI_DEBUGFS
1096         debugfs_remove_recursive(drv->dbgfs_drv);
1097 #endif
1098
1099         kfree(drv);
1100 }
1101
1102
1103 /* shared module parameters */
1104 struct iwl_mod_params iwlwifi_mod_params = {
1105         .amsdu_size_8K = 1,
1106         .restart_fw = 1,
1107         .plcp_check = true,
1108         .bt_coex_active = true,
1109         .power_level = IWL_POWER_INDEX_1,
1110         .bt_ch_announce = true,
1111         .auto_agg = true,
1112         .wd_disable = true,
1113         /* the rest are 0 by default */
1114 };
1115 EXPORT_SYMBOL_GPL(iwlwifi_mod_params);
1116
1117 int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops)
1118 {
1119         int i;
1120         struct iwl_drv *drv;
1121         struct iwlwifi_opmode_table *op;
1122
1123         mutex_lock(&iwlwifi_opmode_table_mtx);
1124         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1125                 op = &iwlwifi_opmode_table[i];
1126                 if (strcmp(op->name, name))
1127                         continue;
1128                 op->ops = ops;
1129                 /* TODO: need to handle exceptional case */
1130                 list_for_each_entry(drv, &op->drv, list)
1131                         drv->op_mode = _iwl_op_mode_start(drv, op);
1132
1133                 mutex_unlock(&iwlwifi_opmode_table_mtx);
1134                 return 0;
1135         }
1136         mutex_unlock(&iwlwifi_opmode_table_mtx);
1137         return -EIO;
1138 }
1139 EXPORT_SYMBOL_GPL(iwl_opmode_register);
1140
1141 void iwl_opmode_deregister(const char *name)
1142 {
1143         int i;
1144         struct iwl_drv *drv;
1145
1146         mutex_lock(&iwlwifi_opmode_table_mtx);
1147         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1148                 if (strcmp(iwlwifi_opmode_table[i].name, name))
1149                         continue;
1150                 iwlwifi_opmode_table[i].ops = NULL;
1151
1152                 /* call the stop routine for all devices */
1153                 list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list)
1154                         _iwl_op_mode_stop(drv);
1155
1156                 mutex_unlock(&iwlwifi_opmode_table_mtx);
1157                 return;
1158         }
1159         mutex_unlock(&iwlwifi_opmode_table_mtx);
1160 }
1161 EXPORT_SYMBOL_GPL(iwl_opmode_deregister);
1162
1163 static int __init iwl_drv_init(void)
1164 {
1165         int i;
1166
1167         mutex_init(&iwlwifi_opmode_table_mtx);
1168
1169         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++)
1170                 INIT_LIST_HEAD(&iwlwifi_opmode_table[i].drv);
1171
1172         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
1173         pr_info(DRV_COPYRIGHT "\n");
1174
1175 #ifdef CONFIG_IWLWIFI_DEBUGFS
1176         /* Create the root of iwlwifi debugfs subsystem. */
1177         iwl_dbgfs_root = debugfs_create_dir(DRV_NAME, NULL);
1178
1179         if (!iwl_dbgfs_root)
1180                 return -EFAULT;
1181 #endif
1182
1183         return iwl_pci_register_driver();
1184 }
1185 module_init(iwl_drv_init);
1186
1187 static void __exit iwl_drv_exit(void)
1188 {
1189         iwl_pci_unregister_driver();
1190
1191 #ifdef CONFIG_IWLWIFI_DEBUGFS
1192         debugfs_remove_recursive(iwl_dbgfs_root);
1193 #endif
1194 }
1195 module_exit(iwl_drv_exit);
1196
1197 #ifdef CONFIG_IWLWIFI_DEBUG
1198 module_param_named(debug, iwlwifi_mod_params.debug_level, uint,
1199                    S_IRUGO | S_IWUSR);
1200 MODULE_PARM_DESC(debug, "debug output mask");
1201 #endif
1202
1203 module_param_named(swcrypto, iwlwifi_mod_params.sw_crypto, int, S_IRUGO);
1204 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1205 module_param_named(11n_disable, iwlwifi_mod_params.disable_11n, uint, S_IRUGO);
1206 MODULE_PARM_DESC(11n_disable,
1207         "disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
1208 module_param_named(amsdu_size_8K, iwlwifi_mod_params.amsdu_size_8K,
1209                    int, S_IRUGO);
1210 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
1211 module_param_named(fw_restart, iwlwifi_mod_params.restart_fw, int, S_IRUGO);
1212 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
1213
1214 module_param_named(antenna_coupling, iwlwifi_mod_params.ant_coupling,
1215                    int, S_IRUGO);
1216 MODULE_PARM_DESC(antenna_coupling,
1217                  "specify antenna coupling in dB (defualt: 0 dB)");
1218
1219 module_param_named(bt_ch_inhibition, iwlwifi_mod_params.bt_ch_announce,
1220                    bool, S_IRUGO);
1221 MODULE_PARM_DESC(bt_ch_inhibition,
1222                  "Enable BT channel inhibition (default: enable)");
1223
1224 module_param_named(plcp_check, iwlwifi_mod_params.plcp_check, bool, S_IRUGO);
1225 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
1226
1227 module_param_named(wd_disable, iwlwifi_mod_params.wd_disable, int, S_IRUGO);
1228 MODULE_PARM_DESC(wd_disable,
1229                 "Disable stuck queue watchdog timer 0=system default, "
1230                 "1=disable, 2=enable (default: 0)");
1231
1232 /*
1233  * set bt_coex_active to true, uCode will do kill/defer
1234  * every time the priority line is asserted (BT is sending signals on the
1235  * priority line in the PCIx).
1236  * set bt_coex_active to false, uCode will ignore the BT activity and
1237  * perform the normal operation
1238  *
1239  * User might experience transmit issue on some platform due to WiFi/BT
1240  * co-exist problem. The possible behaviors are:
1241  *   Able to scan and finding all the available AP
1242  *   Not able to associate with any AP
1243  * On those platforms, WiFi communication can be restored by set
1244  * "bt_coex_active" module parameter to "false"
1245  *
1246  * default: bt_coex_active = true (BT_COEX_ENABLE)
1247  */
1248 module_param_named(bt_coex_active, iwlwifi_mod_params.bt_coex_active,
1249                 bool, S_IRUGO);
1250 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1251
1252 module_param_named(led_mode, iwlwifi_mod_params.led_mode, int, S_IRUGO);
1253 MODULE_PARM_DESC(led_mode, "0=system default, "
1254                 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1255
1256 module_param_named(power_save, iwlwifi_mod_params.power_save,
1257                 bool, S_IRUGO);
1258 MODULE_PARM_DESC(power_save,
1259                  "enable WiFi power management (default: disable)");
1260
1261 module_param_named(power_level, iwlwifi_mod_params.power_level,
1262                 int, S_IRUGO);
1263 MODULE_PARM_DESC(power_level,
1264                  "default power save level (range from 1 - 5, default: 1)");
1265
1266 module_param_named(auto_agg, iwlwifi_mod_params.auto_agg,
1267                 bool, S_IRUGO);
1268 MODULE_PARM_DESC(auto_agg,
1269                  "enable agg w/o check traffic load (default: enable)");
1270
1271 module_param_named(5ghz_disable, iwlwifi_mod_params.disable_5ghz,
1272                 bool, S_IRUGO);
1273 MODULE_PARM_DESC(5ghz_disable, "disable 5GHz band (default: 0 [enabled])");