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