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_set_ucode_api_flags(struct iwl_drv *drv, const u8 *data,
 408                                    struct iwl_ucode_capabilities *capa)
 409 {
 410         const struct iwl_ucode_api *ucode_api = (void *)data;
 411         u32 api_index = le32_to_cpu(ucode_api->api_index);
 412
 413         if (api_index >= IWL_API_ARRAY_SIZE) {
 414                 IWL_ERR(drv, "api_index larger than supported by driver\n");
 415                 return -EINVAL;
 416         }
 417
 418         capa->api[api_index] = le32_to_cpu(ucode_api->api_flags);
 419
 420         return 0;
 421 }
 422
 423 static int iwl_set_ucode_capabilities(struct iwl_drv *drv, const u8 *data,
 424                                       struct iwl_ucode_capabilities *capa)
 425 {
 426         const struct iwl_ucode_capa *ucode_capa = (void *)data;
 427         u32 api_index = le32_to_cpu(ucode_capa->api_index);
 428
 429         if (api_index >= IWL_CAPABILITIES_ARRAY_SIZE) {
 430                 IWL_ERR(drv, "api_index larger than supported by driver\n");
 431                 return -EINVAL;
 432         }
 433
 434         capa->capa[api_index] = le32_to_cpu(ucode_capa->api_capa);
 435
 436         return 0;
 437 }
 438
 439 static int iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
 440                                     const struct firmware *ucode_raw,
 441                                     struct iwl_firmware_pieces *pieces)
 442 {
 443         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
 444         u32 api_ver, hdr_size, build;
 445         char buildstr[25];
 446         const u8 *src;
 447
 448         drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
 449         api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
 450
 451         switch (api_ver) {
 452         default:
 453                 hdr_size = 28;
 454                 if (ucode_raw->size < hdr_size) {
 455                         IWL_ERR(drv, "File size too small!\n");
 456                         return -EINVAL;
 457                 }
 458                 build = le32_to_cpu(ucode->u.v2.build);
 459                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 460                              le32_to_cpu(ucode->u.v2.inst_size));
 461                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 462                              le32_to_cpu(ucode->u.v2.data_size));
 463                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 464                              le32_to_cpu(ucode->u.v2.init_size));
 465                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 466                              le32_to_cpu(ucode->u.v2.init_data_size));
 467                 src = ucode->u.v2.data;
 468                 break;
 469         case 0:
 470         case 1:
 471         case 2:
 472                 hdr_size = 24;
 473                 if (ucode_raw->size < hdr_size) {
 474                         IWL_ERR(drv, "File size too small!\n");
 475                         return -EINVAL;
 476                 }
 477                 build = 0;
 478                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 479                              le32_to_cpu(ucode->u.v1.inst_size));
 480                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 481                              le32_to_cpu(ucode->u.v1.data_size));
 482                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 483                              le32_to_cpu(ucode->u.v1.init_size));
 484                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 485                              le32_to_cpu(ucode->u.v1.init_data_size));
 486                 src = ucode->u.v1.data;
 487                 break;
 488         }
 489
 490         if (build)
 491                 sprintf(buildstr, " build %u%s", build,
 492                        (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 493                                 ? " (EXP)" : "");
 494         else
 495                 buildstr[0] = '\0';
 496
 497         snprintf(drv->fw.fw_version,
 498                  sizeof(drv->fw.fw_version),
 499                  "%u.%u.%u.%u%s",
 500                  IWL_UCODE_MAJOR(drv->fw.ucode_ver),
 501                  IWL_UCODE_MINOR(drv->fw.ucode_ver),
 502                  IWL_UCODE_API(drv->fw.ucode_ver),
 503                  IWL_UCODE_SERIAL(drv->fw.ucode_ver),
 504                  buildstr);
 505
 506         /* Verify size of file vs. image size info in file's header */
 507
 508         if (ucode_raw->size != hdr_size +
 509             get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) +
 510             get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) +
 511             get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) +
 512             get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)) {
 513
 514                 IWL_ERR(drv,
 515                         "uCode file size %d does not match expected size\n",
 516                         (int)ucode_raw->size);
 517                 return -EINVAL;
 518         }
 519
 520
 521         set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, src);
 522         src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST);
 523         set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 524                        IWLAGN_RTC_INST_LOWER_BOUND);
 525         set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, src);
 526         src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA);
 527         set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 528                        IWLAGN_RTC_DATA_LOWER_BOUND);
 529         set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, src);
 530         src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST);
 531         set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 532                        IWLAGN_RTC_INST_LOWER_BOUND);
 533         set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, src);
 534         src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA);
 535         set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 536                        IWLAGN_RTC_DATA_LOWER_BOUND);
 537         return 0;
 538 }
 539
 540 static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
 541                                 const struct firmware *ucode_raw,
 542                                 struct iwl_firmware_pieces *pieces,
 543                                 struct iwl_ucode_capabilities *capa)
 544 {
 545         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
 546         struct iwl_ucode_tlv *tlv;
 547         size_t len = ucode_raw->size;
 548         const u8 *data;
 549         u32 tlv_len;
 550         enum iwl_ucode_tlv_type tlv_type;
 551         const u8 *tlv_data;
 552         char buildstr[25];
 553         u32 build;
 554         int num_of_cpus;
 555
 556         if (len < sizeof(*ucode)) {
 557                 IWL_ERR(drv, "uCode has invalid length: %zd\n", len);
 558                 return -EINVAL;
 559         }
 560
 561         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
 562                 IWL_ERR(drv, "invalid uCode magic: 0X%x\n",
 563                         le32_to_cpu(ucode->magic));
 564                 return -EINVAL;
 565         }
 566
 567         drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
 568         build = le32_to_cpu(ucode->build);
 569
 570         if (build)
 571                 sprintf(buildstr, " build %u%s", build,
 572                        (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 573                                 ? " (EXP)" : "");
 574         else
 575                 buildstr[0] = '\0';
 576
 577         snprintf(drv->fw.fw_version,
 578                  sizeof(drv->fw.fw_version),
 579                  "%u.%u.%u.%u%s",
 580                  IWL_UCODE_MAJOR(drv->fw.ucode_ver),
 581                  IWL_UCODE_MINOR(drv->fw.ucode_ver),
 582                  IWL_UCODE_API(drv->fw.ucode_ver),
 583                  IWL_UCODE_SERIAL(drv->fw.ucode_ver),
 584                  buildstr);
 585
 586         data = ucode->data;
 587
 588         len -= sizeof(*ucode);
 589
 590         while (len >= sizeof(*tlv)) {
 591                 len -= sizeof(*tlv);
 592                 tlv = (void *)data;
 593
 594                 tlv_len = le32_to_cpu(tlv->length);
 595                 tlv_type = le32_to_cpu(tlv->type);
 596                 tlv_data = tlv->data;
 597
 598                 if (len < tlv_len) {
 599                         IWL_ERR(drv, "invalid TLV len: %zd/%u\n",
 600                                 len, tlv_len);
 601                         return -EINVAL;
 602                 }
 603                 len -= ALIGN(tlv_len, 4);
 604                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
 605
 606                 switch (tlv_type) {
 607                 case IWL_UCODE_TLV_INST:
 608                         set_sec_data(pieces, IWL_UCODE_REGULAR,
 609                                      IWL_UCODE_SECTION_INST, tlv_data);
 610                         set_sec_size(pieces, IWL_UCODE_REGULAR,
 611                                      IWL_UCODE_SECTION_INST, tlv_len);
 612                         set_sec_offset(pieces, IWL_UCODE_REGULAR,
 613                                        IWL_UCODE_SECTION_INST,
 614                                        IWLAGN_RTC_INST_LOWER_BOUND);
 615                         break;
 616                 case IWL_UCODE_TLV_DATA:
 617                         set_sec_data(pieces, IWL_UCODE_REGULAR,
 618                                      IWL_UCODE_SECTION_DATA, tlv_data);
 619                         set_sec_size(pieces, IWL_UCODE_REGULAR,
 620                                      IWL_UCODE_SECTION_DATA, tlv_len);
 621                         set_sec_offset(pieces, IWL_UCODE_REGULAR,
 622                                        IWL_UCODE_SECTION_DATA,
 623                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 624                         break;
 625                 case IWL_UCODE_TLV_INIT:
 626                         set_sec_data(pieces, IWL_UCODE_INIT,
 627                                      IWL_UCODE_SECTION_INST, tlv_data);
 628                         set_sec_size(pieces, IWL_UCODE_INIT,
 629                                      IWL_UCODE_SECTION_INST, tlv_len);
 630                         set_sec_offset(pieces, IWL_UCODE_INIT,
 631                                        IWL_UCODE_SECTION_INST,
 632                                        IWLAGN_RTC_INST_LOWER_BOUND);
 633                         break;
 634                 case IWL_UCODE_TLV_INIT_DATA:
 635                         set_sec_data(pieces, IWL_UCODE_INIT,
 636                                      IWL_UCODE_SECTION_DATA, tlv_data);
 637                         set_sec_size(pieces, IWL_UCODE_INIT,
 638                                      IWL_UCODE_SECTION_DATA, tlv_len);
 639                         set_sec_offset(pieces, IWL_UCODE_INIT,
 640                                        IWL_UCODE_SECTION_DATA,
 641                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 642                         break;
 643                 case IWL_UCODE_TLV_BOOT:
 644                         IWL_ERR(drv, "Found unexpected BOOT ucode\n");
 645                         break;
 646                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
 647                         if (tlv_len != sizeof(u32))
 648                                 goto invalid_tlv_len;
 649                         capa->max_probe_length =
 650                                         le32_to_cpup((__le32 *)tlv_data);
 651                         break;
 652                 case IWL_UCODE_TLV_PAN:
 653                         if (tlv_len)
 654                                 goto invalid_tlv_len;
 655                         capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
 656                         break;
 657                 case IWL_UCODE_TLV_FLAGS:
 658                         /* must be at least one u32 */
 659                         if (tlv_len < sizeof(u32))
 660                                 goto invalid_tlv_len;
 661                         /* and a proper number of u32s */
 662                         if (tlv_len % sizeof(u32))
 663                                 goto invalid_tlv_len;
 664                         /*
 665                          * This driver only reads the first u32 as
 666                          * right now no more features are defined,
 667                          * if that changes then either the driver
 668                          * will not work with the new firmware, or
 669                          * it'll not take advantage of new features.
 670                          */
 671                         capa->flags = le32_to_cpup((__le32 *)tlv_data);
 672                         break;
 673                 case IWL_UCODE_TLV_API_CHANGES_SET:
 674                         if (tlv_len != sizeof(struct iwl_ucode_api))
 675                                 goto invalid_tlv_len;
 676                         if (iwl_set_ucode_api_flags(drv, tlv_data, capa))
 677                                 goto tlv_error;
 678                         break;
 679                 case IWL_UCODE_TLV_ENABLED_CAPABILITIES:
 680                         if (tlv_len != sizeof(struct iwl_ucode_capa))
 681                                 goto invalid_tlv_len;
 682                         if (iwl_set_ucode_capabilities(drv, tlv_data, capa))
 683                                 goto tlv_error;
 684                         break;
 685                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
 686                         if (tlv_len != sizeof(u32))
 687                                 goto invalid_tlv_len;
 688                         pieces->init_evtlog_ptr =
 689                                         le32_to_cpup((__le32 *)tlv_data);
 690                         break;
 691                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
 692                         if (tlv_len != sizeof(u32))
 693                                 goto invalid_tlv_len;
 694                         pieces->init_evtlog_size =
 695                                         le32_to_cpup((__le32 *)tlv_data);
 696                         break;
 697                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
 698                         if (tlv_len != sizeof(u32))
 699                                 goto invalid_tlv_len;
 700                         pieces->init_errlog_ptr =
 701                                         le32_to_cpup((__le32 *)tlv_data);
 702                         break;
 703                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
 704                         if (tlv_len != sizeof(u32))
 705                                 goto invalid_tlv_len;
 706                         pieces->inst_evtlog_ptr =
 707                                         le32_to_cpup((__le32 *)tlv_data);
 708                         break;
 709                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
 710                         if (tlv_len != sizeof(u32))
 711                                 goto invalid_tlv_len;
 712                         pieces->inst_evtlog_size =
 713                                         le32_to_cpup((__le32 *)tlv_data);
 714                         break;
 715                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
 716                         if (tlv_len != sizeof(u32))
 717                                 goto invalid_tlv_len;
 718                         pieces->inst_errlog_ptr =
 719                                         le32_to_cpup((__le32 *)tlv_data);
 720                         break;
 721                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
 722                         if (tlv_len)
 723                                 goto invalid_tlv_len;
 724                         drv->fw.enhance_sensitivity_table = true;
 725                         break;
 726                 case IWL_UCODE_TLV_WOWLAN_INST:
 727                         set_sec_data(pieces, IWL_UCODE_WOWLAN,
 728                                      IWL_UCODE_SECTION_INST, tlv_data);
 729                         set_sec_size(pieces, IWL_UCODE_WOWLAN,
 730                                      IWL_UCODE_SECTION_INST, tlv_len);
 731                         set_sec_offset(pieces, IWL_UCODE_WOWLAN,
 732                                        IWL_UCODE_SECTION_INST,
 733                                        IWLAGN_RTC_INST_LOWER_BOUND);
 734                         break;
 735                 case IWL_UCODE_TLV_WOWLAN_DATA:
 736                         set_sec_data(pieces, IWL_UCODE_WOWLAN,
 737                                      IWL_UCODE_SECTION_DATA, tlv_data);
 738                         set_sec_size(pieces, IWL_UCODE_WOWLAN,
 739                                      IWL_UCODE_SECTION_DATA, tlv_len);
 740                         set_sec_offset(pieces, IWL_UCODE_WOWLAN,
 741                                        IWL_UCODE_SECTION_DATA,
 742                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 743                         break;
 744                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
 745                         if (tlv_len != sizeof(u32))
 746                                 goto invalid_tlv_len;
 747                         capa->standard_phy_calibration_size =
 748                                         le32_to_cpup((__le32 *)tlv_data);
 749                         break;
 750                  case IWL_UCODE_TLV_SEC_RT:
 751                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
 752                                             tlv_len);
 753                         drv->fw.mvm_fw = true;
 754                         break;
 755                 case IWL_UCODE_TLV_SEC_INIT:
 756                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
 757                                             tlv_len);
 758                         drv->fw.mvm_fw = true;
 759                         break;
 760                 case IWL_UCODE_TLV_SEC_WOWLAN:
 761                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
 762                                             tlv_len);
 763                         drv->fw.mvm_fw = true;
 764                         break;
 765                 case IWL_UCODE_TLV_DEF_CALIB:
 766                         if (tlv_len != sizeof(struct iwl_tlv_calib_data))
 767                                 goto invalid_tlv_len;
 768                         if (iwl_set_default_calib(drv, tlv_data))
 769                                 goto tlv_error;
 770                         break;
 771                 case IWL_UCODE_TLV_PHY_SKU:
 772                         if (tlv_len != sizeof(u32))
 773                                 goto invalid_tlv_len;
 774                         drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data);
 775                         drv->fw.valid_tx_ant = (drv->fw.phy_config &
 776                                                 FW_PHY_CFG_TX_CHAIN) >>
 777                                                 FW_PHY_CFG_TX_CHAIN_POS;
 778                         drv->fw.valid_rx_ant = (drv->fw.phy_config &
 779                                                 FW_PHY_CFG_RX_CHAIN) >>
 780                                                 FW_PHY_CFG_RX_CHAIN_POS;
 781                         break;
 782                  case IWL_UCODE_TLV_SECURE_SEC_RT:
 783                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
 784                                             tlv_len);
 785                         drv->fw.mvm_fw = true;
 786                         drv->fw.img[IWL_UCODE_REGULAR].is_secure = true;
 787                         break;
 788                 case IWL_UCODE_TLV_SECURE_SEC_INIT:
 789                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
 790                                             tlv_len);
 791                         drv->fw.mvm_fw = true;
 792                         drv->fw.img[IWL_UCODE_INIT].is_secure = true;
 793                         break;
 794                 case IWL_UCODE_TLV_SECURE_SEC_WOWLAN:
 795                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
 796                                             tlv_len);
 797                         drv->fw.mvm_fw = true;
 798                         drv->fw.img[IWL_UCODE_WOWLAN].is_secure = true;
 799                         break;
 800                 case IWL_UCODE_TLV_NUM_OF_CPU:
 801                         if (tlv_len != sizeof(u32))
 802                                 goto invalid_tlv_len;
 803                         num_of_cpus =
 804                                 le32_to_cpup((__le32 *)tlv_data);
 805
 806                         if (num_of_cpus == 2) {
 807                                 drv->fw.img[IWL_UCODE_REGULAR].is_dual_cpus =
 808                                         true;
 809                                 drv->fw.img[IWL_UCODE_INIT].is_dual_cpus =
 810                                         true;
 811                                 drv->fw.img[IWL_UCODE_WOWLAN].is_dual_cpus =
 812                                         true;
 813                         } else if ((num_of_cpus > 2) || (num_of_cpus < 1)) {
 814                                 IWL_ERR(drv, "Driver support upto 2 CPUs\n");
 815                                 return -EINVAL;
 816                         }
 817                         break;
 818                 case IWL_UCODE_TLV_CSCHEME:
 819                         if (iwl_store_cscheme(&drv->fw, tlv_data, tlv_len))
 820                                 goto invalid_tlv_len;
 821                         break;
 822                 default:
 823                         IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
 824                         break;
 825                 }
 826         }
 827
 828         if (len) {
 829                 IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
 830                 iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len);
 831                 return -EINVAL;
 832         }
 833
 834         return 0;
 835
 836  invalid_tlv_len:
 837         IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
 838  tlv_error:
 839         iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);
 840
 841         return -EINVAL;
 842 }
 843
 844 static int iwl_alloc_ucode(struct iwl_drv *drv,
 845                            struct iwl_firmware_pieces *pieces,
 846                            enum iwl_ucode_type type)
 847 {
 848         int i;
 849         for (i = 0;
 850              i < IWL_UCODE_SECTION_MAX && get_sec_size(pieces, type, i);
 851              i++)
 852                 if (iwl_alloc_fw_desc(drv, &(drv->fw.img[type].sec[i]),
 853                                       get_sec(pieces, type, i)))
 854                         return -ENOMEM;
 855         return 0;
 856 }
 857
 858 static int validate_sec_sizes(struct iwl_drv *drv,
 859                               struct iwl_firmware_pieces *pieces,
 860                               const struct iwl_cfg *cfg)
 861 {
 862         IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %Zd\n",
 863                 get_sec_size(pieces, IWL_UCODE_REGULAR,
 864                              IWL_UCODE_SECTION_INST));
 865         IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %Zd\n",
 866                 get_sec_size(pieces, IWL_UCODE_REGULAR,
 867                              IWL_UCODE_SECTION_DATA));
 868         IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %Zd\n",
 869                 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST));
 870         IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %Zd\n",
 871                 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA));
 872
 873         /* Verify that uCode images will fit in card's SRAM. */
 874         if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
 875                                                         cfg->max_inst_size) {
 876                 IWL_ERR(drv, "uCode instr len %Zd too large to fit in\n",
 877                         get_sec_size(pieces, IWL_UCODE_REGULAR,
 878                                                 IWL_UCODE_SECTION_INST));
 879                 return -1;
 880         }
 881
 882         if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
 883                                                         cfg->max_data_size) {
 884                 IWL_ERR(drv, "uCode data len %Zd too large to fit in\n",
 885                         get_sec_size(pieces, IWL_UCODE_REGULAR,
 886                                                 IWL_UCODE_SECTION_DATA));
 887                 return -1;
 888         }
 889
 890          if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) >
 891                                                         cfg->max_inst_size) {
 892                 IWL_ERR(drv, "uCode init instr len %Zd too large to fit in\n",
 893                         get_sec_size(pieces, IWL_UCODE_INIT,
 894                                                 IWL_UCODE_SECTION_INST));
 895                 return -1;
 896         }
 897
 898         if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA) >
 899                                                         cfg->max_data_size) {
 900                 IWL_ERR(drv, "uCode init data len %Zd too large to fit in\n",
 901                         get_sec_size(pieces, IWL_UCODE_REGULAR,
 902                                                 IWL_UCODE_SECTION_DATA));
 903                 return -1;
 904         }
 905         return 0;
 906 }
 907
 908 static struct iwl_op_mode *
 909 _iwl_op_mode_start(struct iwl_drv *drv, struct iwlwifi_opmode_table *op)
 910 {
 911         const struct iwl_op_mode_ops *ops = op->ops;
 912         struct dentry *dbgfs_dir = NULL;
 913         struct iwl_op_mode *op_mode = NULL;
 914
 915 #ifdef CONFIG_IWLWIFI_DEBUGFS
 916         drv->dbgfs_op_mode = debugfs_create_dir(op->name,
 917                                                 drv->dbgfs_drv);
 918         if (!drv->dbgfs_op_mode) {
 919                 IWL_ERR(drv,
 920                         "failed to create opmode debugfs directory\n");
 921                 return op_mode;
 922         }
 923         dbgfs_dir = drv->dbgfs_op_mode;
 924 #endif
 925
 926         op_mode = ops->start(drv->trans, drv->cfg, &drv->fw, dbgfs_dir);
 927
 928 #ifdef CONFIG_IWLWIFI_DEBUGFS
 929         if (!op_mode) {
 930                 debugfs_remove_recursive(drv->dbgfs_op_mode);
 931                 drv->dbgfs_op_mode = NULL;
 932         }
 933 #endif
 934
 935         return op_mode;
 936 }
 937
 938 static void _iwl_op_mode_stop(struct iwl_drv *drv)
 939 {
 940         /* op_mode can be NULL if its start failed */
 941         if (drv->op_mode) {
 942                 iwl_op_mode_stop(drv->op_mode);
 943                 drv->op_mode = NULL;
 944
 945 #ifdef CONFIG_IWLWIFI_DEBUGFS
 946                 debugfs_remove_recursive(drv->dbgfs_op_mode);
 947                 drv->dbgfs_op_mode = NULL;
 948 #endif
 949         }
 950 }
 951
 952 /**
 953  * iwl_req_fw_callback - callback when firmware was loaded
 954  *
 955  * If loaded successfully, copies the firmware into buffers
 956  * for the card to fetch (via DMA).
 957  */
 958 static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
 959 {
 960         struct iwl_drv *drv = context;
 961         struct iwl_fw *fw = &drv->fw;
 962         struct iwl_ucode_header *ucode;
 963         struct iwlwifi_opmode_table *op;
 964         int err;
 965         struct iwl_firmware_pieces pieces;
 966         const unsigned int api_max = drv->cfg->ucode_api_max;
 967         unsigned int api_ok = drv->cfg->ucode_api_ok;
 968         const unsigned int api_min = drv->cfg->ucode_api_min;
 969         u32 api_ver;
 970         int i;
 971         bool load_module = false;
 972
 973         fw->ucode_capa.max_probe_length = IWL_DEFAULT_MAX_PROBE_LENGTH;
 974         fw->ucode_capa.standard_phy_calibration_size =
 975                         IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
 976
 977         if (!api_ok)
 978                 api_ok = api_max;
 979
 980         memset(&pieces, 0, sizeof(pieces));
 981
 982         if (!ucode_raw) {
 983                 if (drv->fw_index <= api_ok)
 984                         IWL_ERR(drv,
 985                                 "request for firmware file '%s' failed.\n",
 986                                 drv->firmware_name);
 987                 goto try_again;
 988         }
 989
 990         IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
 991                        drv->firmware_name, ucode_raw->size);
 992
 993         /* Make sure that we got at least the API version number */
 994         if (ucode_raw->size < 4) {
 995                 IWL_ERR(drv, "File size way too small!\n");
 996                 goto try_again;
 997         }
 998
 999         /* Data from ucode file:  header followed by uCode images */
1000         ucode = (struct iwl_ucode_header *)ucode_raw->data;
1001
1002         if (ucode->ver)
1003                 err = iwl_parse_v1_v2_firmware(drv, ucode_raw, &pieces);
1004         else
1005                 err = iwl_parse_tlv_firmware(drv, ucode_raw, &pieces,
1006                                            &fw->ucode_capa);
1007
1008         if (err)
1009                 goto try_again;
1010
1011         api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
1012
1013         /*
1014          * api_ver should match the api version forming part of the
1015          * firmware filename ... but we don't check for that and only rely
1016          * on the API version read from firmware header from here on forward
1017          */
1018         /* no api version check required for experimental uCode */
1019         if (drv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1020                 if (api_ver < api_min || api_ver > api_max) {
1021                         IWL_ERR(drv,
1022                                 "Driver unable to support your firmware API. "
1023                                 "Driver supports v%u, firmware is v%u.\n",
1024                                 api_max, api_ver);
1025                         goto try_again;
1026                 }
1027
1028                 if (api_ver < api_ok) {
1029                         if (api_ok != api_max)
1030                                 IWL_ERR(drv, "Firmware has old API version, "
1031                                         "expected v%u through v%u, got v%u.\n",
1032                                         api_ok, api_max, api_ver);
1033                         else
1034                                 IWL_ERR(drv, "Firmware has old API version, "
1035                                         "expected v%u, got v%u.\n",
1036                                         api_max, api_ver);
1037                         IWL_ERR(drv, "New firmware can be obtained from "
1038                                       "http://www.intellinuxwireless.org/.\n");
1039                 }
1040         }
1041
1042         /*
1043          * In mvm uCode there is no difference between data and instructions
1044          * sections.
1045          */
1046         if (!fw->mvm_fw && validate_sec_sizes(drv, &pieces, drv->cfg))
1047                 goto try_again;
1048
1049         /* Allocate ucode buffers for card's bus-master loading ... */
1050
1051         /* Runtime instructions and 2 copies of data:
1052          * 1) unmodified from disk
1053          * 2) backup cache for save/restore during power-downs */
1054         for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
1055                 if (iwl_alloc_ucode(drv, &pieces, i))
1056                         goto out_free_fw;
1057
1058         /* Now that we can no longer fail, copy information */
1059
1060         /*
1061          * The (size - 16) / 12 formula is based on the information recorded
1062          * for each event, which is of mode 1 (including timestamp) for all
1063          * new microcodes that include this information.
1064          */
1065         fw->init_evtlog_ptr = pieces.init_evtlog_ptr;
1066         if (pieces.init_evtlog_size)
1067                 fw->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1068         else
1069                 fw->init_evtlog_size =
1070                         drv->cfg->base_params->max_event_log_size;
1071         fw->init_errlog_ptr = pieces.init_errlog_ptr;
1072         fw->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1073         if (pieces.inst_evtlog_size)
1074                 fw->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1075         else
1076                 fw->inst_evtlog_size =
1077                         drv->cfg->base_params->max_event_log_size;
1078         fw->inst_errlog_ptr = pieces.inst_errlog_ptr;
1079
1080         /*
1081          * figure out the offset of chain noise reset and gain commands
1082          * base on the size of standard phy calibration commands table size
1083          */
1084         if (fw->ucode_capa.standard_phy_calibration_size >
1085             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1086                 fw->ucode_capa.standard_phy_calibration_size =
1087                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1088
1089         /* We have our copies now, allow OS release its copies */
1090         release_firmware(ucode_raw);
1091
1092         mutex_lock(&iwlwifi_opmode_table_mtx);
1093         if (fw->mvm_fw)
1094                 op = &iwlwifi_opmode_table[MVM_OP_MODE];
1095         else
1096                 op = &iwlwifi_opmode_table[DVM_OP_MODE];
1097
1098         IWL_INFO(drv, "loaded firmware version %s op_mode %s\n",
1099                  drv->fw.fw_version, op->name);
1100
1101         /* add this device to the list of devices using this op_mode */
1102         list_add_tail(&drv->list, &op->drv);
1103
1104         if (op->ops) {
1105                 drv->op_mode = _iwl_op_mode_start(drv, op);
1106
1107                 if (!drv->op_mode) {
1108                         mutex_unlock(&iwlwifi_opmode_table_mtx);
1109                         goto out_unbind;
1110                 }
1111         } else {
1112                 load_module = true;
1113         }
1114         mutex_unlock(&iwlwifi_opmode_table_mtx);
1115
1116         /*
1117          * Complete the firmware request last so that
1118          * a driver unbind (stop) doesn't run while we
1119          * are doing the start() above.
1120          */
1121         complete(&drv->request_firmware_complete);
1122
1123         /*
1124          * Load the module last so we don't block anything
1125          * else from proceeding if the module fails to load
1126          * or hangs loading.
1127          */
1128         if (load_module) {
1129                 err = request_module("%s", op->name);
1130 #ifdef CONFIG_IWLWIFI_OPMODE_MODULAR
1131                 if (err)
1132                         IWL_ERR(drv,
1133                                 "failed to load module %s (error %d), is dynamic loading enabled?\n",
1134                                 op->name, err);
1135 #endif
1136         }
1137         return;
1138
1139  try_again:
1140         /* try next, if any */
1141         release_firmware(ucode_raw);
1142         if (iwl_request_firmware(drv, false))
1143                 goto out_unbind;
1144         return;
1145
1146  out_free_fw:
1147         IWL_ERR(drv, "failed to allocate pci memory\n");
1148         iwl_dealloc_ucode(drv);
1149         release_firmware(ucode_raw);
1150  out_unbind:
1151         complete(&drv->request_firmware_complete);
1152         device_release_driver(drv->trans->dev);
1153 }
1154
1155 struct iwl_drv *iwl_drv_start(struct iwl_trans *trans,
1156                               const struct iwl_cfg *cfg)
1157 {
1158         struct iwl_drv *drv;
1159         int ret;
1160
1161         drv = kzalloc(sizeof(*drv), GFP_KERNEL);
1162         if (!drv) {
1163                 ret = -ENOMEM;
1164                 goto err;
1165         }
1166
1167         drv->trans = trans;
1168         drv->dev = trans->dev;
1169         drv->cfg = cfg;
1170
1171         init_completion(&drv->request_firmware_complete);
1172         INIT_LIST_HEAD(&drv->list);
1173
1174 #ifdef CONFIG_IWLWIFI_DEBUGFS
1175         /* Create the device debugfs entries. */
1176         drv->dbgfs_drv = debugfs_create_dir(dev_name(trans->dev),
1177                                             iwl_dbgfs_root);
1178
1179         if (!drv->dbgfs_drv) {
1180                 IWL_ERR(drv, "failed to create debugfs directory\n");
1181                 ret = -ENOMEM;
1182                 goto err_free_drv;
1183         }
1184
1185         /* Create transport layer debugfs dir */
1186         drv->trans->dbgfs_dir = debugfs_create_dir("trans", drv->dbgfs_drv);
1187
1188         if (!drv->trans->dbgfs_dir) {
1189                 IWL_ERR(drv, "failed to create transport debugfs directory\n");
1190                 ret = -ENOMEM;
1191                 goto err_free_dbgfs;
1192         }
1193 #endif
1194
1195         ret = iwl_request_firmware(drv, true);
1196         if (ret) {
1197                 IWL_ERR(trans, "Couldn't request the fw\n");
1198                 goto err_fw;
1199         }
1200
1201         return drv;
1202
1203 err_fw:
1204 #ifdef CONFIG_IWLWIFI_DEBUGFS
1205 err_free_dbgfs:
1206         debugfs_remove_recursive(drv->dbgfs_drv);
1207 err_free_drv:
1208 #endif
1209         kfree(drv);
1210 err:
1211         return ERR_PTR(ret);
1212 }
1213
1214 void iwl_drv_stop(struct iwl_drv *drv)
1215 {
1216         wait_for_completion(&drv->request_firmware_complete);
1217
1218         _iwl_op_mode_stop(drv);
1219
1220         iwl_dealloc_ucode(drv);
1221
1222         mutex_lock(&iwlwifi_opmode_table_mtx);
1223         /*
1224          * List is empty (this item wasn't added)
1225          * when firmware loading failed -- in that
1226          * case we can't remove it from any list.
1227          */
1228         if (!list_empty(&drv->list))
1229                 list_del(&drv->list);
1230         mutex_unlock(&iwlwifi_opmode_table_mtx);
1231
1232 #ifdef CONFIG_IWLWIFI_DEBUGFS
1233         debugfs_remove_recursive(drv->dbgfs_drv);
1234 #endif
1235
1236         kfree(drv);
1237 }
1238
1239
1240 /* shared module parameters */
1241 struct iwl_mod_params iwlwifi_mod_params = {
1242         .restart_fw = true,
1243         .bt_coex_active = true,
1244         .power_level = IWL_POWER_INDEX_1,
1245         .wd_disable = true,
1246         /* the rest are 0 by default */
1247 };
1248 IWL_EXPORT_SYMBOL(iwlwifi_mod_params);
1249
1250 int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops)
1251 {
1252         int i;
1253         struct iwl_drv *drv;
1254         struct iwlwifi_opmode_table *op;
1255
1256         mutex_lock(&iwlwifi_opmode_table_mtx);
1257         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1258                 op = &iwlwifi_opmode_table[i];
1259                 if (strcmp(op->name, name))
1260                         continue;
1261                 op->ops = ops;
1262                 /* TODO: need to handle exceptional case */
1263                 list_for_each_entry(drv, &op->drv, list)
1264                         drv->op_mode = _iwl_op_mode_start(drv, op);
1265
1266                 mutex_unlock(&iwlwifi_opmode_table_mtx);
1267                 return 0;
1268         }
1269         mutex_unlock(&iwlwifi_opmode_table_mtx);
1270         return -EIO;
1271 }
1272 IWL_EXPORT_SYMBOL(iwl_opmode_register);
1273
1274 void iwl_opmode_deregister(const char *name)
1275 {
1276         int i;
1277         struct iwl_drv *drv;
1278
1279         mutex_lock(&iwlwifi_opmode_table_mtx);
1280         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1281                 if (strcmp(iwlwifi_opmode_table[i].name, name))
1282                         continue;
1283                 iwlwifi_opmode_table[i].ops = NULL;
1284
1285                 /* call the stop routine for all devices */
1286                 list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list)
1287                         _iwl_op_mode_stop(drv);
1288
1289                 mutex_unlock(&iwlwifi_opmode_table_mtx);
1290                 return;
1291         }
1292         mutex_unlock(&iwlwifi_opmode_table_mtx);
1293 }
1294 IWL_EXPORT_SYMBOL(iwl_opmode_deregister);
1295
1296 static int __init iwl_drv_init(void)
1297 {
1298         int i;
1299
1300         mutex_init(&iwlwifi_opmode_table_mtx);
1301
1302         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++)
1303                 INIT_LIST_HEAD(&iwlwifi_opmode_table[i].drv);
1304
1305         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
1306         pr_info(DRV_COPYRIGHT "\n");
1307
1308 #ifdef CONFIG_IWLWIFI_DEBUGFS
1309         /* Create the root of iwlwifi debugfs subsystem. */
1310         iwl_dbgfs_root = debugfs_create_dir(DRV_NAME, NULL);
1311
1312         if (!iwl_dbgfs_root)
1313                 return -EFAULT;
1314 #endif
1315
1316         return iwl_pci_register_driver();
1317 }
1318 module_init(iwl_drv_init);
1319
1320 static void __exit iwl_drv_exit(void)
1321 {
1322         iwl_pci_unregister_driver();
1323
1324 #ifdef CONFIG_IWLWIFI_DEBUGFS
1325         debugfs_remove_recursive(iwl_dbgfs_root);
1326 #endif
1327 }
1328 module_exit(iwl_drv_exit);
1329
1330 #ifdef CONFIG_IWLWIFI_DEBUG
1331 module_param_named(debug, iwlwifi_mod_params.debug_level, uint,
1332                    S_IRUGO | S_IWUSR);
1333 MODULE_PARM_DESC(debug, "debug output mask");
1334 #endif
1335
1336 module_param_named(swcrypto, iwlwifi_mod_params.sw_crypto, int, S_IRUGO);
1337 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1338 module_param_named(11n_disable, iwlwifi_mod_params.disable_11n, uint, S_IRUGO);
1339 MODULE_PARM_DESC(11n_disable,
1340         "disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
1341 module_param_named(amsdu_size_8K, iwlwifi_mod_params.amsdu_size_8K,
1342                    int, S_IRUGO);
1343 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size (default 0)");
1344 module_param_named(fw_restart, iwlwifi_mod_params.restart_fw, bool, S_IRUGO);
1345 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error (default true)");
1346
1347 module_param_named(antenna_coupling, iwlwifi_mod_params.ant_coupling,
1348                    int, S_IRUGO);
1349 MODULE_PARM_DESC(antenna_coupling,
1350                  "specify antenna coupling in dB (defualt: 0 dB)");
1351
1352 module_param_named(wd_disable, iwlwifi_mod_params.wd_disable, int, S_IRUGO);
1353 MODULE_PARM_DESC(wd_disable,
1354                 "Disable stuck queue watchdog timer 0=system default, "
1355                 "1=disable, 2=enable (default: 0)");
1356
1357 module_param_named(nvm_file, iwlwifi_mod_params.nvm_file, charp, S_IRUGO);
1358 MODULE_PARM_DESC(nvm_file, "NVM file name");
1359
1360 /*
1361  * set bt_coex_active to true, uCode will do kill/defer
1362  * every time the priority line is asserted (BT is sending signals on the
1363  * priority line in the PCIx).
1364  * set bt_coex_active to false, uCode will ignore the BT activity and
1365  * perform the normal operation
1366  *
1367  * User might experience transmit issue on some platform due to WiFi/BT
1368  * co-exist problem. The possible behaviors are:
1369  *   Able to scan and finding all the available AP
1370  *   Not able to associate with any AP
1371  * On those platforms, WiFi communication can be restored by set
1372  * "bt_coex_active" module parameter to "false"
1373  *
1374  * default: bt_coex_active = true (BT_COEX_ENABLE)
1375  */
1376 module_param_named(bt_coex_active, iwlwifi_mod_params.bt_coex_active,
1377                 bool, S_IRUGO);
1378 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1379
1380 module_param_named(led_mode, iwlwifi_mod_params.led_mode, int, S_IRUGO);
1381 MODULE_PARM_DESC(led_mode, "0=system default, "
1382                 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1383
1384 module_param_named(power_save, iwlwifi_mod_params.power_save,
1385                 bool, S_IRUGO);
1386 MODULE_PARM_DESC(power_save,
1387                  "enable WiFi power management (default: disable)");
1388
1389 module_param_named(power_level, iwlwifi_mod_params.power_level,
1390                 int, S_IRUGO);
1391 MODULE_PARM_DESC(power_level,
1392                  "default power save level (range from 1 - 5, default: 1)");