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 - 2014 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 COPYING.
  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 - 2014 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[32];         /* 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         snprintf(drv->firmware_name, sizeof(drv->firmware_name), "%s%s.ucode",
 241                  name_pre, tag);
 242
 243         IWL_DEBUG_INFO(drv, "attempting to load firmware %s'%s'\n",
 244                        (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 245                                 ? "EXPERIMENTAL " : "",
 246                        drv->firmware_name);
 247
 248         return request_firmware_nowait(THIS_MODULE, 1, drv->firmware_name,
 249                                        drv->trans->dev,
 250                                        GFP_KERNEL, drv, iwl_req_fw_callback);
 251 }
 252
 253 struct fw_img_parsing {
 254         struct fw_sec sec[IWL_UCODE_SECTION_MAX];
 255         int sec_counter;
 256 };
 257
 258 /*
 259  * struct fw_sec_parsing: to extract fw section and it's offset from tlv
 260  */
 261 struct fw_sec_parsing {
 262         __le32 offset;
 263         const u8 data[];
 264 } __packed;
 265
 266 /**
 267  * struct iwl_tlv_calib_data - parse the default calib data from TLV
 268  *
 269  * @ucode_type: the uCode to which the following default calib relates.
 270  * @calib: default calibrations.
 271  */
 272 struct iwl_tlv_calib_data {
 273         __le32 ucode_type;
 274         struct iwl_tlv_calib_ctrl calib;
 275 } __packed;
 276
 277 struct iwl_firmware_pieces {
 278         struct fw_img_parsing img[IWL_UCODE_TYPE_MAX];
 279
 280         u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
 281         u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
 282 };
 283
 284 /*
 285  * These functions are just to extract uCode section data from the pieces
 286  * structure.
 287  */
 288 static struct fw_sec *get_sec(struct iwl_firmware_pieces *pieces,
 289                               enum iwl_ucode_type type,
 290                               int  sec)
 291 {
 292         return &pieces->img[type].sec[sec];
 293 }
 294
 295 static void set_sec_data(struct iwl_firmware_pieces *pieces,
 296                          enum iwl_ucode_type type,
 297                          int sec,
 298                          const void *data)
 299 {
 300         pieces->img[type].sec[sec].data = data;
 301 }
 302
 303 static void set_sec_size(struct iwl_firmware_pieces *pieces,
 304                          enum iwl_ucode_type type,
 305                          int sec,
 306                          size_t size)
 307 {
 308         pieces->img[type].sec[sec].size = size;
 309 }
 310
 311 static size_t get_sec_size(struct iwl_firmware_pieces *pieces,
 312                            enum iwl_ucode_type type,
 313                            int sec)
 314 {
 315         return pieces->img[type].sec[sec].size;
 316 }
 317
 318 static void set_sec_offset(struct iwl_firmware_pieces *pieces,
 319                            enum iwl_ucode_type type,
 320                            int sec,
 321                            u32 offset)
 322 {
 323         pieces->img[type].sec[sec].offset = offset;
 324 }
 325
 326 static int iwl_store_cscheme(struct iwl_fw *fw, const u8 *data, const u32 len)
 327 {
 328         int i, j;
 329         struct iwl_fw_cscheme_list *l = (struct iwl_fw_cscheme_list *)data;
 330         struct iwl_fw_cipher_scheme *fwcs;
 331         struct ieee80211_cipher_scheme *cs;
 332         u32 cipher;
 333
 334         if (len < sizeof(*l) ||
 335             len < sizeof(l->size) + l->size * sizeof(l->cs[0]))
 336                 return -EINVAL;
 337
 338         for (i = 0, j = 0; i < IWL_UCODE_MAX_CS && i < l->size; i++) {
 339                 fwcs = &l->cs[j];
 340                 cipher = le32_to_cpu(fwcs->cipher);
 341
 342                 /* we skip schemes with zero cipher suite selector */
 343                 if (!cipher)
 344                         continue;
 345
 346                 cs = &fw->cs[j++];
 347                 cs->cipher = cipher;
 348                 cs->iftype = BIT(NL80211_IFTYPE_STATION);
 349                 cs->hdr_len = fwcs->hdr_len;
 350                 cs->pn_len = fwcs->pn_len;
 351                 cs->pn_off = fwcs->pn_off;
 352                 cs->key_idx_off = fwcs->key_idx_off;
 353                 cs->key_idx_mask = fwcs->key_idx_mask;
 354                 cs->key_idx_shift = fwcs->key_idx_shift;
 355                 cs->mic_len = fwcs->mic_len;
 356         }
 357
 358         return 0;
 359 }
 360
 361 /*
 362  * Gets uCode section from tlv.
 363  */
 364 static int iwl_store_ucode_sec(struct iwl_firmware_pieces *pieces,
 365                                const void *data, enum iwl_ucode_type type,
 366                                int size)
 367 {
 368         struct fw_img_parsing *img;
 369         struct fw_sec *sec;
 370         struct fw_sec_parsing *sec_parse;
 371
 372         if (WARN_ON(!pieces || !data || type >= IWL_UCODE_TYPE_MAX))
 373                 return -1;
 374
 375         sec_parse = (struct fw_sec_parsing *)data;
 376
 377         img = &pieces->img[type];
 378         sec = &img->sec[img->sec_counter];
 379
 380         sec->offset = le32_to_cpu(sec_parse->offset);
 381         sec->data = sec_parse->data;
 382         sec->size = size - sizeof(sec_parse->offset);
 383
 384         ++img->sec_counter;
 385
 386         return 0;
 387 }
 388
 389 static int iwl_set_default_calib(struct iwl_drv *drv, const u8 *data)
 390 {
 391         struct iwl_tlv_calib_data *def_calib =
 392                                         (struct iwl_tlv_calib_data *)data;
 393         u32 ucode_type = le32_to_cpu(def_calib->ucode_type);
 394         if (ucode_type >= IWL_UCODE_TYPE_MAX) {
 395                 IWL_ERR(drv, "Wrong ucode_type %u for default calibration.\n",
 396                         ucode_type);
 397                 return -EINVAL;
 398         }
 399         drv->fw.default_calib[ucode_type].flow_trigger =
 400                 def_calib->calib.flow_trigger;
 401         drv->fw.default_calib[ucode_type].event_trigger =
 402                 def_calib->calib.event_trigger;
 403
 404         return 0;
 405 }
 406
 407 static int iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
 408                                     const struct firmware *ucode_raw,
 409                                     struct iwl_firmware_pieces *pieces)
 410 {
 411         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
 412         u32 api_ver, hdr_size, build;
 413         char buildstr[25];
 414         const u8 *src;
 415
 416         drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
 417         api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
 418
 419         switch (api_ver) {
 420         default:
 421                 hdr_size = 28;
 422                 if (ucode_raw->size < hdr_size) {
 423                         IWL_ERR(drv, "File size too small!\n");
 424                         return -EINVAL;
 425                 }
 426                 build = le32_to_cpu(ucode->u.v2.build);
 427                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 428                              le32_to_cpu(ucode->u.v2.inst_size));
 429                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 430                              le32_to_cpu(ucode->u.v2.data_size));
 431                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 432                              le32_to_cpu(ucode->u.v2.init_size));
 433                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 434                              le32_to_cpu(ucode->u.v2.init_data_size));
 435                 src = ucode->u.v2.data;
 436                 break;
 437         case 0:
 438         case 1:
 439         case 2:
 440                 hdr_size = 24;
 441                 if (ucode_raw->size < hdr_size) {
 442                         IWL_ERR(drv, "File size too small!\n");
 443                         return -EINVAL;
 444                 }
 445                 build = 0;
 446                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 447                              le32_to_cpu(ucode->u.v1.inst_size));
 448                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 449                              le32_to_cpu(ucode->u.v1.data_size));
 450                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 451                              le32_to_cpu(ucode->u.v1.init_size));
 452                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 453                              le32_to_cpu(ucode->u.v1.init_data_size));
 454                 src = ucode->u.v1.data;
 455                 break;
 456         }
 457
 458         if (build)
 459                 sprintf(buildstr, " build %u%s", build,
 460                        (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 461                                 ? " (EXP)" : "");
 462         else
 463                 buildstr[0] = '\0';
 464
 465         snprintf(drv->fw.fw_version,
 466                  sizeof(drv->fw.fw_version),
 467                  "%u.%u.%u.%u%s",
 468                  IWL_UCODE_MAJOR(drv->fw.ucode_ver),
 469                  IWL_UCODE_MINOR(drv->fw.ucode_ver),
 470                  IWL_UCODE_API(drv->fw.ucode_ver),
 471                  IWL_UCODE_SERIAL(drv->fw.ucode_ver),
 472                  buildstr);
 473
 474         /* Verify size of file vs. image size info in file's header */
 475
 476         if (ucode_raw->size != hdr_size +
 477             get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) +
 478             get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) +
 479             get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) +
 480             get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)) {
 481
 482                 IWL_ERR(drv,
 483                         "uCode file size %d does not match expected size\n",
 484                         (int)ucode_raw->size);
 485                 return -EINVAL;
 486         }
 487
 488
 489         set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, src);
 490         src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST);
 491         set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 492                        IWLAGN_RTC_INST_LOWER_BOUND);
 493         set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, src);
 494         src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA);
 495         set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 496                        IWLAGN_RTC_DATA_LOWER_BOUND);
 497         set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, src);
 498         src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST);
 499         set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 500                        IWLAGN_RTC_INST_LOWER_BOUND);
 501         set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, src);
 502         src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA);
 503         set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 504                        IWLAGN_RTC_DATA_LOWER_BOUND);
 505         return 0;
 506 }
 507
 508 static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
 509                                 const struct firmware *ucode_raw,
 510                                 struct iwl_firmware_pieces *pieces,
 511                                 struct iwl_ucode_capabilities *capa)
 512 {
 513         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
 514         struct iwl_ucode_tlv *tlv;
 515         size_t len = ucode_raw->size;
 516         const u8 *data;
 517         u32 tlv_len;
 518         enum iwl_ucode_tlv_type tlv_type;
 519         const u8 *tlv_data;
 520         char buildstr[25];
 521         u32 build;
 522         int num_of_cpus;
 523
 524         if (len < sizeof(*ucode)) {
 525                 IWL_ERR(drv, "uCode has invalid length: %zd\n", len);
 526                 return -EINVAL;
 527         }
 528
 529         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
 530                 IWL_ERR(drv, "invalid uCode magic: 0X%x\n",
 531                         le32_to_cpu(ucode->magic));
 532                 return -EINVAL;
 533         }
 534
 535         drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
 536         build = le32_to_cpu(ucode->build);
 537
 538         if (build)
 539                 sprintf(buildstr, " build %u%s", build,
 540                        (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 541                                 ? " (EXP)" : "");
 542         else
 543                 buildstr[0] = '\0';
 544
 545         snprintf(drv->fw.fw_version,
 546                  sizeof(drv->fw.fw_version),
 547                  "%u.%u.%u.%u%s",
 548                  IWL_UCODE_MAJOR(drv->fw.ucode_ver),
 549                  IWL_UCODE_MINOR(drv->fw.ucode_ver),
 550                  IWL_UCODE_API(drv->fw.ucode_ver),
 551                  IWL_UCODE_SERIAL(drv->fw.ucode_ver),
 552                  buildstr);
 553
 554         data = ucode->data;
 555
 556         len -= sizeof(*ucode);
 557
 558         while (len >= sizeof(*tlv)) {
 559                 len -= sizeof(*tlv);
 560                 tlv = (void *)data;
 561
 562                 tlv_len = le32_to_cpu(tlv->length);
 563                 tlv_type = le32_to_cpu(tlv->type);
 564                 tlv_data = tlv->data;
 565
 566                 if (len < tlv_len) {
 567                         IWL_ERR(drv, "invalid TLV len: %zd/%u\n",
 568                                 len, tlv_len);
 569                         return -EINVAL;
 570                 }
 571                 len -= ALIGN(tlv_len, 4);
 572                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
 573
 574                 switch (tlv_type) {
 575                 case IWL_UCODE_TLV_INST:
 576                         set_sec_data(pieces, IWL_UCODE_REGULAR,
 577                                      IWL_UCODE_SECTION_INST, tlv_data);
 578                         set_sec_size(pieces, IWL_UCODE_REGULAR,
 579                                      IWL_UCODE_SECTION_INST, tlv_len);
 580                         set_sec_offset(pieces, IWL_UCODE_REGULAR,
 581                                        IWL_UCODE_SECTION_INST,
 582                                        IWLAGN_RTC_INST_LOWER_BOUND);
 583                         break;
 584                 case IWL_UCODE_TLV_DATA:
 585                         set_sec_data(pieces, IWL_UCODE_REGULAR,
 586                                      IWL_UCODE_SECTION_DATA, tlv_data);
 587                         set_sec_size(pieces, IWL_UCODE_REGULAR,
 588                                      IWL_UCODE_SECTION_DATA, tlv_len);
 589                         set_sec_offset(pieces, IWL_UCODE_REGULAR,
 590                                        IWL_UCODE_SECTION_DATA,
 591                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 592                         break;
 593                 case IWL_UCODE_TLV_INIT:
 594                         set_sec_data(pieces, IWL_UCODE_INIT,
 595                                      IWL_UCODE_SECTION_INST, tlv_data);
 596                         set_sec_size(pieces, IWL_UCODE_INIT,
 597                                      IWL_UCODE_SECTION_INST, tlv_len);
 598                         set_sec_offset(pieces, IWL_UCODE_INIT,
 599                                        IWL_UCODE_SECTION_INST,
 600                                        IWLAGN_RTC_INST_LOWER_BOUND);
 601                         break;
 602                 case IWL_UCODE_TLV_INIT_DATA:
 603                         set_sec_data(pieces, IWL_UCODE_INIT,
 604                                      IWL_UCODE_SECTION_DATA, tlv_data);
 605                         set_sec_size(pieces, IWL_UCODE_INIT,
 606                                      IWL_UCODE_SECTION_DATA, tlv_len);
 607                         set_sec_offset(pieces, IWL_UCODE_INIT,
 608                                        IWL_UCODE_SECTION_DATA,
 609                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 610                         break;
 611                 case IWL_UCODE_TLV_BOOT:
 612                         IWL_ERR(drv, "Found unexpected BOOT ucode\n");
 613                         break;
 614                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
 615                         if (tlv_len != sizeof(u32))
 616                                 goto invalid_tlv_len;
 617                         capa->max_probe_length =
 618                                         le32_to_cpup((__le32 *)tlv_data);
 619                         break;
 620                 case IWL_UCODE_TLV_PAN:
 621                         if (tlv_len)
 622                                 goto invalid_tlv_len;
 623                         capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
 624                         break;
 625                 case IWL_UCODE_TLV_FLAGS:
 626                         /* must be at least one u32 */
 627                         if (tlv_len < sizeof(u32))
 628                                 goto invalid_tlv_len;
 629                         /* and a proper number of u32s */
 630                         if (tlv_len % sizeof(u32))
 631                                 goto invalid_tlv_len;
 632                         /*
 633                          * This driver only reads the first u32 as
 634                          * right now no more features are defined,
 635                          * if that changes then either the driver
 636                          * will not work with the new firmware, or
 637                          * it'll not take advantage of new features.
 638                          */
 639                         capa->flags = le32_to_cpup((__le32 *)tlv_data);
 640                         break;
 641                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
 642                         if (tlv_len != sizeof(u32))
 643                                 goto invalid_tlv_len;
 644                         pieces->init_evtlog_ptr =
 645                                         le32_to_cpup((__le32 *)tlv_data);
 646                         break;
 647                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
 648                         if (tlv_len != sizeof(u32))
 649                                 goto invalid_tlv_len;
 650                         pieces->init_evtlog_size =
 651                                         le32_to_cpup((__le32 *)tlv_data);
 652                         break;
 653                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
 654                         if (tlv_len != sizeof(u32))
 655                                 goto invalid_tlv_len;
 656                         pieces->init_errlog_ptr =
 657                                         le32_to_cpup((__le32 *)tlv_data);
 658                         break;
 659                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
 660                         if (tlv_len != sizeof(u32))
 661                                 goto invalid_tlv_len;
 662                         pieces->inst_evtlog_ptr =
 663                                         le32_to_cpup((__le32 *)tlv_data);
 664                         break;
 665                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
 666                         if (tlv_len != sizeof(u32))
 667                                 goto invalid_tlv_len;
 668                         pieces->inst_evtlog_size =
 669                                         le32_to_cpup((__le32 *)tlv_data);
 670                         break;
 671                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
 672                         if (tlv_len != sizeof(u32))
 673                                 goto invalid_tlv_len;
 674                         pieces->inst_errlog_ptr =
 675                                         le32_to_cpup((__le32 *)tlv_data);
 676                         break;
 677                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
 678                         if (tlv_len)
 679                                 goto invalid_tlv_len;
 680                         drv->fw.enhance_sensitivity_table = true;
 681                         break;
 682                 case IWL_UCODE_TLV_WOWLAN_INST:
 683                         set_sec_data(pieces, IWL_UCODE_WOWLAN,
 684                                      IWL_UCODE_SECTION_INST, tlv_data);
 685                         set_sec_size(pieces, IWL_UCODE_WOWLAN,
 686                                      IWL_UCODE_SECTION_INST, tlv_len);
 687                         set_sec_offset(pieces, IWL_UCODE_WOWLAN,
 688                                        IWL_UCODE_SECTION_INST,
 689                                        IWLAGN_RTC_INST_LOWER_BOUND);
 690                         break;
 691                 case IWL_UCODE_TLV_WOWLAN_DATA:
 692                         set_sec_data(pieces, IWL_UCODE_WOWLAN,
 693                                      IWL_UCODE_SECTION_DATA, tlv_data);
 694                         set_sec_size(pieces, IWL_UCODE_WOWLAN,
 695                                      IWL_UCODE_SECTION_DATA, tlv_len);
 696                         set_sec_offset(pieces, IWL_UCODE_WOWLAN,
 697                                        IWL_UCODE_SECTION_DATA,
 698                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 699                         break;
 700                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
 701                         if (tlv_len != sizeof(u32))
 702                                 goto invalid_tlv_len;
 703                         capa->standard_phy_calibration_size =
 704                                         le32_to_cpup((__le32 *)tlv_data);
 705                         break;
 706                  case IWL_UCODE_TLV_SEC_RT:
 707                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
 708                                             tlv_len);
 709                         drv->fw.mvm_fw = true;
 710                         break;
 711                 case IWL_UCODE_TLV_SEC_INIT:
 712                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
 713                                             tlv_len);
 714                         drv->fw.mvm_fw = true;
 715                         break;
 716                 case IWL_UCODE_TLV_SEC_WOWLAN:
 717                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
 718                                             tlv_len);
 719                         drv->fw.mvm_fw = true;
 720                         break;
 721                 case IWL_UCODE_TLV_DEF_CALIB:
 722                         if (tlv_len != sizeof(struct iwl_tlv_calib_data))
 723                                 goto invalid_tlv_len;
 724                         if (iwl_set_default_calib(drv, tlv_data))
 725                                 goto tlv_error;
 726                         break;
 727                 case IWL_UCODE_TLV_PHY_SKU:
 728                         if (tlv_len != sizeof(u32))
 729                                 goto invalid_tlv_len;
 730                         drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data);
 731                         drv->fw.valid_tx_ant = (drv->fw.phy_config &
 732                                                 FW_PHY_CFG_TX_CHAIN) >>
 733                                                 FW_PHY_CFG_TX_CHAIN_POS;
 734                         drv->fw.valid_rx_ant = (drv->fw.phy_config &
 735                                                 FW_PHY_CFG_RX_CHAIN) >>
 736                                                 FW_PHY_CFG_RX_CHAIN_POS;
 737                         break;
 738                  case IWL_UCODE_TLV_SECURE_SEC_RT:
 739                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
 740                                             tlv_len);
 741                         drv->fw.mvm_fw = true;
 742                         drv->fw.img[IWL_UCODE_REGULAR].is_secure = true;
 743                         break;
 744                 case IWL_UCODE_TLV_SECURE_SEC_INIT:
 745                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
 746                                             tlv_len);
 747                         drv->fw.mvm_fw = true;
 748                         drv->fw.img[IWL_UCODE_INIT].is_secure = true;
 749                         break;
 750                 case IWL_UCODE_TLV_SECURE_SEC_WOWLAN:
 751                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
 752                                             tlv_len);
 753                         drv->fw.mvm_fw = true;
 754                         drv->fw.img[IWL_UCODE_WOWLAN].is_secure = true;
 755                         break;
 756                 case IWL_UCODE_TLV_NUM_OF_CPU:
 757                         if (tlv_len != sizeof(u32))
 758                                 goto invalid_tlv_len;
 759                         num_of_cpus =
 760                                 le32_to_cpup((__le32 *)tlv_data);
 761
 762                         if (num_of_cpus == 2) {
 763                                 drv->fw.img[IWL_UCODE_REGULAR].is_dual_cpus =
 764                                         true;
 765                                 drv->fw.img[IWL_UCODE_INIT].is_dual_cpus =
 766                                         true;
 767                                 drv->fw.img[IWL_UCODE_WOWLAN].is_dual_cpus =
 768                                         true;
 769                         } else if ((num_of_cpus > 2) || (num_of_cpus < 1)) {
 770                                 IWL_ERR(drv, "Driver support upto 2 CPUs\n");
 771                                 return -EINVAL;
 772                         }
 773                         break;
 774                 case IWL_UCODE_TLV_CSCHEME:
 775                         if (iwl_store_cscheme(&drv->fw, tlv_data, tlv_len))
 776                                 goto invalid_tlv_len;
 777                         break;
 778                 default:
 779                         IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
 780                         break;
 781                 }
 782         }
 783
 784         if (len) {
 785                 IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
 786                 iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len);
 787                 return -EINVAL;
 788         }
 789
 790         return 0;
 791
 792  invalid_tlv_len:
 793         IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
 794  tlv_error:
 795         iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);
 796
 797         return -EINVAL;
 798 }
 799
 800 static int iwl_alloc_ucode(struct iwl_drv *drv,
 801                            struct iwl_firmware_pieces *pieces,
 802                            enum iwl_ucode_type type)
 803 {
 804         int i;
 805         for (i = 0;
 806              i < IWL_UCODE_SECTION_MAX && get_sec_size(pieces, type, i);
 807              i++)
 808                 if (iwl_alloc_fw_desc(drv, &(drv->fw.img[type].sec[i]),
 809                                       get_sec(pieces, type, i)))
 810                         return -ENOMEM;
 811         return 0;
 812 }
 813
 814 static int validate_sec_sizes(struct iwl_drv *drv,
 815                               struct iwl_firmware_pieces *pieces,
 816                               const struct iwl_cfg *cfg)
 817 {
 818         IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %Zd\n",
 819                 get_sec_size(pieces, IWL_UCODE_REGULAR,
 820                              IWL_UCODE_SECTION_INST));
 821         IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %Zd\n",
 822                 get_sec_size(pieces, IWL_UCODE_REGULAR,
 823                              IWL_UCODE_SECTION_DATA));
 824         IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %Zd\n",
 825                 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST));
 826         IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %Zd\n",
 827                 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA));
 828
 829         /* Verify that uCode images will fit in card's SRAM. */
 830         if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
 831                                                         cfg->max_inst_size) {
 832                 IWL_ERR(drv, "uCode instr len %Zd too large to fit in\n",
 833                         get_sec_size(pieces, IWL_UCODE_REGULAR,
 834                                                 IWL_UCODE_SECTION_INST));
 835                 return -1;
 836         }
 837
 838         if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
 839                                                         cfg->max_data_size) {
 840                 IWL_ERR(drv, "uCode data len %Zd too large to fit in\n",
 841                         get_sec_size(pieces, IWL_UCODE_REGULAR,
 842                                                 IWL_UCODE_SECTION_DATA));
 843                 return -1;
 844         }
 845
 846          if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) >
 847                                                         cfg->max_inst_size) {
 848                 IWL_ERR(drv, "uCode init instr len %Zd too large to fit in\n",
 849                         get_sec_size(pieces, IWL_UCODE_INIT,
 850                                                 IWL_UCODE_SECTION_INST));
 851                 return -1;
 852         }
 853
 854         if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA) >
 855                                                         cfg->max_data_size) {
 856                 IWL_ERR(drv, "uCode init data len %Zd too large to fit in\n",
 857                         get_sec_size(pieces, IWL_UCODE_REGULAR,
 858                                                 IWL_UCODE_SECTION_DATA));
 859                 return -1;
 860         }
 861         return 0;
 862 }
 863
 864 static struct iwl_op_mode *
 865 _iwl_op_mode_start(struct iwl_drv *drv, struct iwlwifi_opmode_table *op)
 866 {
 867         const struct iwl_op_mode_ops *ops = op->ops;
 868         struct dentry *dbgfs_dir = NULL;
 869         struct iwl_op_mode *op_mode = NULL;
 870
 871 #ifdef CONFIG_IWLWIFI_DEBUGFS
 872         drv->dbgfs_op_mode = debugfs_create_dir(op->name,
 873                                                 drv->dbgfs_drv);
 874         if (!drv->dbgfs_op_mode) {
 875                 IWL_ERR(drv,
 876                         "failed to create opmode debugfs directory\n");
 877                 return op_mode;
 878         }
 879         dbgfs_dir = drv->dbgfs_op_mode;
 880 #endif
 881
 882         op_mode = ops->start(drv->trans, drv->cfg, &drv->fw, dbgfs_dir);
 883
 884 #ifdef CONFIG_IWLWIFI_DEBUGFS
 885         if (!op_mode) {
 886                 debugfs_remove_recursive(drv->dbgfs_op_mode);
 887                 drv->dbgfs_op_mode = NULL;
 888         }
 889 #endif
 890
 891         return op_mode;
 892 }
 893
 894 static void _iwl_op_mode_stop(struct iwl_drv *drv)
 895 {
 896         /* op_mode can be NULL if its start failed */
 897         if (drv->op_mode) {
 898                 iwl_op_mode_stop(drv->op_mode);
 899                 drv->op_mode = NULL;
 900
 901 #ifdef CONFIG_IWLWIFI_DEBUGFS
 902                 debugfs_remove_recursive(drv->dbgfs_op_mode);
 903                 drv->dbgfs_op_mode = NULL;
 904 #endif
 905         }
 906 }
 907
 908 /**
 909  * iwl_req_fw_callback - callback when firmware was loaded
 910  *
 911  * If loaded successfully, copies the firmware into buffers
 912  * for the card to fetch (via DMA).
 913  */
 914 static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
 915 {
 916         struct iwl_drv *drv = context;
 917         struct iwl_fw *fw = &drv->fw;
 918         struct iwl_ucode_header *ucode;
 919         struct iwlwifi_opmode_table *op;
 920         int err;
 921         struct iwl_firmware_pieces pieces;
 922         const unsigned int api_max = drv->cfg->ucode_api_max;
 923         unsigned int api_ok = drv->cfg->ucode_api_ok;
 924         const unsigned int api_min = drv->cfg->ucode_api_min;
 925         u32 api_ver;
 926         int i;
 927         bool load_module = false;
 928
 929         fw->ucode_capa.max_probe_length = IWL_DEFAULT_MAX_PROBE_LENGTH;
 930         fw->ucode_capa.standard_phy_calibration_size =
 931                         IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
 932
 933         if (!api_ok)
 934                 api_ok = api_max;
 935
 936         memset(&pieces, 0, sizeof(pieces));
 937
 938         if (!ucode_raw) {
 939                 if (drv->fw_index <= api_ok)
 940                         IWL_ERR(drv,
 941                                 "request for firmware file '%s' failed.\n",
 942                                 drv->firmware_name);
 943                 goto try_again;
 944         }
 945
 946         IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
 947                        drv->firmware_name, ucode_raw->size);
 948
 949         /* Make sure that we got at least the API version number */
 950         if (ucode_raw->size < 4) {
 951                 IWL_ERR(drv, "File size way too small!\n");
 952                 goto try_again;
 953         }
 954
 955         /* Data from ucode file:  header followed by uCode images */
 956         ucode = (struct iwl_ucode_header *)ucode_raw->data;
 957
 958         if (ucode->ver)
 959                 err = iwl_parse_v1_v2_firmware(drv, ucode_raw, &pieces);
 960         else
 961                 err = iwl_parse_tlv_firmware(drv, ucode_raw, &pieces,
 962                                            &fw->ucode_capa);
 963
 964         if (err)
 965                 goto try_again;
 966
 967         api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
 968
 969         /*
 970          * api_ver should match the api version forming part of the
 971          * firmware filename ... but we don't check for that and only rely
 972          * on the API version read from firmware header from here on forward
 973          */
 974         /* no api version check required for experimental uCode */
 975         if (drv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
 976                 if (api_ver < api_min || api_ver > api_max) {
 977                         IWL_ERR(drv,
 978                                 "Driver unable to support your firmware API. "
 979                                 "Driver supports v%u, firmware is v%u.\n",
 980                                 api_max, api_ver);
 981                         goto try_again;
 982                 }
 983
 984                 if (api_ver < api_ok) {
 985                         if (api_ok != api_max)
 986                                 IWL_ERR(drv, "Firmware has old API version, "
 987                                         "expected v%u through v%u, got v%u.\n",
 988                                         api_ok, api_max, api_ver);
 989                         else
 990                                 IWL_ERR(drv, "Firmware has old API version, "
 991                                         "expected v%u, got v%u.\n",
 992                                         api_max, api_ver);
 993                         IWL_ERR(drv, "New firmware can be obtained from "
 994                                       "http://www.intellinuxwireless.org/.\n");
 995                 }
 996         }
 997
 998         /*
 999          * In mvm uCode there is no difference between data and instructions
1000          * sections.
1001          */
1002         if (!fw->mvm_fw && validate_sec_sizes(drv, &pieces, drv->cfg))
1003                 goto try_again;
1004
1005         /* Allocate ucode buffers for card's bus-master loading ... */
1006
1007         /* Runtime instructions and 2 copies of data:
1008          * 1) unmodified from disk
1009          * 2) backup cache for save/restore during power-downs */
1010         for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
1011                 if (iwl_alloc_ucode(drv, &pieces, i))
1012                         goto out_free_fw;
1013
1014         /* Now that we can no longer fail, copy information */
1015
1016         /*
1017          * The (size - 16) / 12 formula is based on the information recorded
1018          * for each event, which is of mode 1 (including timestamp) for all
1019          * new microcodes that include this information.
1020          */
1021         fw->init_evtlog_ptr = pieces.init_evtlog_ptr;
1022         if (pieces.init_evtlog_size)
1023                 fw->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1024         else
1025                 fw->init_evtlog_size =
1026                         drv->cfg->base_params->max_event_log_size;
1027         fw->init_errlog_ptr = pieces.init_errlog_ptr;
1028         fw->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1029         if (pieces.inst_evtlog_size)
1030                 fw->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1031         else
1032                 fw->inst_evtlog_size =
1033                         drv->cfg->base_params->max_event_log_size;
1034         fw->inst_errlog_ptr = pieces.inst_errlog_ptr;
1035
1036         /*
1037          * figure out the offset of chain noise reset and gain commands
1038          * base on the size of standard phy calibration commands table size
1039          */
1040         if (fw->ucode_capa.standard_phy_calibration_size >
1041             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1042                 fw->ucode_capa.standard_phy_calibration_size =
1043                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1044
1045         /* We have our copies now, allow OS release its copies */
1046         release_firmware(ucode_raw);
1047
1048         mutex_lock(&iwlwifi_opmode_table_mtx);
1049         if (fw->mvm_fw)
1050                 op = &iwlwifi_opmode_table[MVM_OP_MODE];
1051         else
1052                 op = &iwlwifi_opmode_table[DVM_OP_MODE];
1053
1054         IWL_INFO(drv, "loaded firmware version %s op_mode %s\n",
1055                  drv->fw.fw_version, op->name);
1056
1057         /* add this device to the list of devices using this op_mode */
1058         list_add_tail(&drv->list, &op->drv);
1059
1060         if (op->ops) {
1061                 drv->op_mode = _iwl_op_mode_start(drv, op);
1062
1063                 if (!drv->op_mode) {
1064                         mutex_unlock(&iwlwifi_opmode_table_mtx);
1065                         goto out_unbind;
1066                 }
1067         } else {
1068                 load_module = true;
1069         }
1070         mutex_unlock(&iwlwifi_opmode_table_mtx);
1071
1072         /*
1073          * Complete the firmware request last so that
1074          * a driver unbind (stop) doesn't run while we
1075          * are doing the start() above.
1076          */
1077         complete(&drv->request_firmware_complete);
1078
1079         /*
1080          * Load the module last so we don't block anything
1081          * else from proceeding if the module fails to load
1082          * or hangs loading.
1083          */
1084         if (load_module) {
1085                 err = request_module("%s", op->name);
1086 #ifdef CONFIG_IWLWIFI_OPMODE_MODULAR
1087                 if (err)
1088                         IWL_ERR(drv,
1089                                 "failed to load module %s (error %d), is dynamic loading enabled?\n",
1090                                 op->name, err);
1091 #endif
1092         }
1093         return;
1094
1095  try_again:
1096         /* try next, if any */
1097         release_firmware(ucode_raw);
1098         if (iwl_request_firmware(drv, false))
1099                 goto out_unbind;
1100         return;
1101
1102  out_free_fw:
1103         IWL_ERR(drv, "failed to allocate pci memory\n");
1104         iwl_dealloc_ucode(drv);
1105         release_firmware(ucode_raw);
1106  out_unbind:
1107         complete(&drv->request_firmware_complete);
1108         device_release_driver(drv->trans->dev);
1109 }
1110
1111 struct iwl_drv *iwl_drv_start(struct iwl_trans *trans,
1112                               const struct iwl_cfg *cfg)
1113 {
1114         struct iwl_drv *drv;
1115         int ret;
1116
1117         drv = kzalloc(sizeof(*drv), GFP_KERNEL);
1118         if (!drv) {
1119                 ret = -ENOMEM;
1120                 goto err;
1121         }
1122
1123         drv->trans = trans;
1124         drv->dev = trans->dev;
1125         drv->cfg = cfg;
1126
1127         init_completion(&drv->request_firmware_complete);
1128         INIT_LIST_HEAD(&drv->list);
1129
1130 #ifdef CONFIG_IWLWIFI_DEBUGFS
1131         /* Create the device debugfs entries. */
1132         drv->dbgfs_drv = debugfs_create_dir(dev_name(trans->dev),
1133                                             iwl_dbgfs_root);
1134
1135         if (!drv->dbgfs_drv) {
1136                 IWL_ERR(drv, "failed to create debugfs directory\n");
1137                 ret = -ENOMEM;
1138                 goto err_free_drv;
1139         }
1140
1141         /* Create transport layer debugfs dir */
1142         drv->trans->dbgfs_dir = debugfs_create_dir("trans", drv->dbgfs_drv);
1143
1144         if (!drv->trans->dbgfs_dir) {
1145                 IWL_ERR(drv, "failed to create transport debugfs directory\n");
1146                 ret = -ENOMEM;
1147                 goto err_free_dbgfs;
1148         }
1149 #endif
1150
1151         ret = iwl_request_firmware(drv, true);
1152         if (ret) {
1153                 IWL_ERR(trans, "Couldn't request the fw\n");
1154                 goto err_fw;
1155         }
1156
1157         return drv;
1158
1159 err_fw:
1160 #ifdef CONFIG_IWLWIFI_DEBUGFS
1161 err_free_dbgfs:
1162         debugfs_remove_recursive(drv->dbgfs_drv);
1163 err_free_drv:
1164 #endif
1165         kfree(drv);
1166 err:
1167         return ERR_PTR(ret);
1168 }
1169
1170 void iwl_drv_stop(struct iwl_drv *drv)
1171 {
1172         wait_for_completion(&drv->request_firmware_complete);
1173
1174         _iwl_op_mode_stop(drv);
1175
1176         iwl_dealloc_ucode(drv);
1177
1178         mutex_lock(&iwlwifi_opmode_table_mtx);
1179         /*
1180          * List is empty (this item wasn't added)
1181          * when firmware loading failed -- in that
1182          * case we can't remove it from any list.
1183          */
1184         if (!list_empty(&drv->list))
1185                 list_del(&drv->list);
1186         mutex_unlock(&iwlwifi_opmode_table_mtx);
1187
1188 #ifdef CONFIG_IWLWIFI_DEBUGFS
1189         debugfs_remove_recursive(drv->dbgfs_drv);
1190 #endif
1191
1192         kfree(drv);
1193 }
1194
1195
1196 /* shared module parameters */
1197 struct iwl_mod_params iwlwifi_mod_params = {
1198         .restart_fw = true,
1199         .bt_coex_active = true,
1200         .power_level = IWL_POWER_INDEX_1,
1201         .wd_disable = true,
1202         /* the rest are 0 by default */
1203 };
1204 IWL_EXPORT_SYMBOL(iwlwifi_mod_params);
1205
1206 int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops)
1207 {
1208         int i;
1209         struct iwl_drv *drv;
1210         struct iwlwifi_opmode_table *op;
1211
1212         mutex_lock(&iwlwifi_opmode_table_mtx);
1213         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1214                 op = &iwlwifi_opmode_table[i];
1215                 if (strcmp(op->name, name))
1216                         continue;
1217                 op->ops = ops;
1218                 /* TODO: need to handle exceptional case */
1219                 list_for_each_entry(drv, &op->drv, list)
1220                         drv->op_mode = _iwl_op_mode_start(drv, op);
1221
1222                 mutex_unlock(&iwlwifi_opmode_table_mtx);
1223                 return 0;
1224         }
1225         mutex_unlock(&iwlwifi_opmode_table_mtx);
1226         return -EIO;
1227 }
1228 IWL_EXPORT_SYMBOL(iwl_opmode_register);
1229
1230 void iwl_opmode_deregister(const char *name)
1231 {
1232         int i;
1233         struct iwl_drv *drv;
1234
1235         mutex_lock(&iwlwifi_opmode_table_mtx);
1236         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1237                 if (strcmp(iwlwifi_opmode_table[i].name, name))
1238                         continue;
1239                 iwlwifi_opmode_table[i].ops = NULL;
1240
1241                 /* call the stop routine for all devices */
1242                 list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list)
1243                         _iwl_op_mode_stop(drv);
1244
1245                 mutex_unlock(&iwlwifi_opmode_table_mtx);
1246                 return;
1247         }
1248         mutex_unlock(&iwlwifi_opmode_table_mtx);
1249 }
1250 IWL_EXPORT_SYMBOL(iwl_opmode_deregister);
1251
1252 static int __init iwl_drv_init(void)
1253 {
1254         int i;
1255
1256         mutex_init(&iwlwifi_opmode_table_mtx);
1257
1258         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++)
1259                 INIT_LIST_HEAD(&iwlwifi_opmode_table[i].drv);
1260
1261         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
1262         pr_info(DRV_COPYRIGHT "\n");
1263
1264 #ifdef CONFIG_IWLWIFI_DEBUGFS
1265         /* Create the root of iwlwifi debugfs subsystem. */
1266         iwl_dbgfs_root = debugfs_create_dir(DRV_NAME, NULL);
1267
1268         if (!iwl_dbgfs_root)
1269                 return -EFAULT;
1270 #endif
1271
1272         return iwl_pci_register_driver();
1273 }
1274 module_init(iwl_drv_init);
1275
1276 static void __exit iwl_drv_exit(void)
1277 {
1278         iwl_pci_unregister_driver();
1279
1280 #ifdef CONFIG_IWLWIFI_DEBUGFS
1281         debugfs_remove_recursive(iwl_dbgfs_root);
1282 #endif
1283 }
1284 module_exit(iwl_drv_exit);
1285
1286 #ifdef CONFIG_IWLWIFI_DEBUG
1287 module_param_named(debug, iwlwifi_mod_params.debug_level, uint,
1288                    S_IRUGO | S_IWUSR);
1289 MODULE_PARM_DESC(debug, "debug output mask");
1290 #endif
1291
1292 module_param_named(swcrypto, iwlwifi_mod_params.sw_crypto, int, S_IRUGO);
1293 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1294 module_param_named(11n_disable, iwlwifi_mod_params.disable_11n, uint, S_IRUGO);
1295 MODULE_PARM_DESC(11n_disable,
1296         "disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
1297 module_param_named(amsdu_size_8K, iwlwifi_mod_params.amsdu_size_8K,
1298                    int, S_IRUGO);
1299 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size (default 0)");
1300 module_param_named(fw_restart, iwlwifi_mod_params.restart_fw, bool, S_IRUGO);
1301 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error (default true)");
1302
1303 module_param_named(antenna_coupling, iwlwifi_mod_params.ant_coupling,
1304                    int, S_IRUGO);
1305 MODULE_PARM_DESC(antenna_coupling,
1306                  "specify antenna coupling in dB (defualt: 0 dB)");
1307
1308 module_param_named(wd_disable, iwlwifi_mod_params.wd_disable, int, S_IRUGO);
1309 MODULE_PARM_DESC(wd_disable,
1310                 "Disable stuck queue watchdog timer 0=system default, "
1311                 "1=disable, 2=enable (default: 0)");
1312
1313 module_param_named(nvm_file, iwlwifi_mod_params.nvm_file, charp, S_IRUGO);
1314 MODULE_PARM_DESC(nvm_file, "NVM file name");
1315
1316 /*
1317  * set bt_coex_active to true, uCode will do kill/defer
1318  * every time the priority line is asserted (BT is sending signals on the
1319  * priority line in the PCIx).
1320  * set bt_coex_active to false, uCode will ignore the BT activity and
1321  * perform the normal operation
1322  *
1323  * User might experience transmit issue on some platform due to WiFi/BT
1324  * co-exist problem. The possible behaviors are:
1325  *   Able to scan and finding all the available AP
1326  *   Not able to associate with any AP
1327  * On those platforms, WiFi communication can be restored by set
1328  * "bt_coex_active" module parameter to "false"
1329  *
1330  * default: bt_coex_active = true (BT_COEX_ENABLE)
1331  */
1332 module_param_named(bt_coex_active, iwlwifi_mod_params.bt_coex_active,
1333                 bool, S_IRUGO);
1334 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1335
1336 module_param_named(led_mode, iwlwifi_mod_params.led_mode, int, S_IRUGO);
1337 MODULE_PARM_DESC(led_mode, "0=system default, "
1338                 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1339
1340 module_param_named(power_save, iwlwifi_mod_params.power_save,
1341                 bool, S_IRUGO);
1342 MODULE_PARM_DESC(power_save,
1343                  "enable WiFi power management (default: disable)");
1344
1345 module_param_named(power_level, iwlwifi_mod_params.power_level,
1346                 int, S_IRUGO);
1347 MODULE_PARM_DESC(power_level,
1348                  "default power save level (range from 1 - 5, default: 1)");