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  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of version 2 of the GNU General Public License as
  13  * published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  23  * USA
  24  *
  25  * The full GNU General Public License is included in this distribution
  26  * in the file called COPYING.
  27  *
  28  * Contact Information:
  29  *  Intel Linux Wireless <ilw@linux.intel.com>
  30  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  31  *
  32  * BSD LICENSE
  33  *
  34  * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
  35  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  36  * All rights reserved.
  37  *
  38  * Redistribution and use in source and binary forms, with or without
  39  * modification, are permitted provided that the following conditions
  40  * are met:
  41  *
  42  *  * Redistributions of source code must retain the above copyright
  43  *    notice, this list of conditions and the following disclaimer.
  44  *  * Redistributions in binary form must reproduce the above copyright
  45  *    notice, this list of conditions and the following disclaimer in
  46  *    the documentation and/or other materials provided with the
  47  *    distribution.
  48  *  * Neither the name Intel Corporation nor the names of its
  49  *    contributors may be used to endorse or promote products derived
  50  *    from this software without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  53  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  54  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  55  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  56  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  57  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  58  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  59  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  60  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  61  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  62  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  63  *
  64  *****************************************************************************/
  65 #include <linux/completion.h>
  66 #include <linux/dma-mapping.h>
  67 #include <linux/firmware.h>
  68 #include <linux/module.h>
  69 #include <linux/vmalloc.h>
  70
  71 #include "iwl-drv.h"
  72 #include "iwl-csr.h"
  73 #include "iwl-debug.h"
  74 #include "iwl-trans.h"
  75 #include "iwl-op-mode.h"
  76 #include "iwl-agn-hw.h"
  77 #include "iwl-fw.h"
  78 #include "iwl-config.h"
  79 #include "iwl-modparams.h"
  80
  81 /******************************************************************************
  82  *
  83  * module boiler plate
  84  *
  85  ******************************************************************************/
  86
  87 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi driver for Linux"
  88 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  89 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  90 MODULE_LICENSE("GPL");
  91
  92 #ifdef CONFIG_IWLWIFI_DEBUGFS
  93 static struct dentry *iwl_dbgfs_root;
  94 #endif
  95
  96 /**
  97  * struct iwl_drv - drv common data
  98  * @list: list of drv structures using this opmode
  99  * @fw: the iwl_fw structure
 100  * @op_mode: the running op_mode
 101  * @trans: transport layer
 102  * @dev: for debug prints only
 103  * @cfg: configuration struct
 104  * @fw_index: firmware revision to try loading
 105  * @firmware_name: composite filename of ucode file to load
 106  * @request_firmware_complete: the firmware has been obtained from user space
 107  */
 108 struct iwl_drv {
 109         struct list_head list;
 110         struct iwl_fw fw;
 111
 112         struct iwl_op_mode *op_mode;
 113         struct iwl_trans *trans;
 114         struct device *dev;
 115         const struct iwl_cfg *cfg;
 116
 117         int fw_index;                   /* firmware we're trying to load */
 118         char firmware_name[32];         /* name of firmware file to load */
 119
 120         struct completion request_firmware_complete;
 121
 122 #ifdef CONFIG_IWLWIFI_DEBUGFS
 123         struct dentry *dbgfs_drv;
 124         struct dentry *dbgfs_trans;
 125         struct dentry *dbgfs_op_mode;
 126 #endif
 127 };
 128
 129 enum {
 130         DVM_OP_MODE =   0,
 131         MVM_OP_MODE =   1,
 132 };
 133
 134 /* Protects the table contents, i.e. the ops pointer & drv list */
 135 static struct mutex iwlwifi_opmode_table_mtx;
 136 static struct iwlwifi_opmode_table {
 137         const char *name;                       /* name: iwldvm, iwlmvm, etc */
 138         const struct iwl_op_mode_ops *ops;      /* pointer to op_mode ops */
 139         struct list_head drv;           /* list of devices using this op_mode */
 140 } iwlwifi_opmode_table[] = {            /* ops set when driver is initialized */
 141         [DVM_OP_MODE] = { .name = "iwldvm", .ops = NULL },
 142         [MVM_OP_MODE] = { .name = "iwlmvm", .ops = NULL },
 143 };
 144
 145 #define IWL_DEFAULT_SCAN_CHANNELS 40
 146
 147 /*
 148  * struct fw_sec: Just for the image parsing process.
 149  * For the fw storage we are using struct fw_desc.
 150  */
 151 struct fw_sec {
 152         const void *data;               /* the sec data */
 153         size_t size;                    /* section size */
 154         u32 offset;                     /* offset of writing in the device */
 155 };
 156
 157 static void iwl_free_fw_desc(struct iwl_drv *drv, struct fw_desc *desc)
 158 {
 159         vfree(desc->data);
 160         desc->data = NULL;
 161         desc->len = 0;
 162 }
 163
 164 static void iwl_free_fw_img(struct iwl_drv *drv, struct fw_img *img)
 165 {
 166         int i;
 167         for (i = 0; i < IWL_UCODE_SECTION_MAX; i++)
 168                 iwl_free_fw_desc(drv, &img->sec[i]);
 169 }
 170
 171 static void iwl_dealloc_ucode(struct iwl_drv *drv)
 172 {
 173         int i;
 174
 175         kfree(drv->fw.dbg_dest_tlv);
 176         for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_conf_tlv); i++)
 177                 kfree(drv->fw.dbg_conf_tlv[i]);
 178         for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_trigger_tlv); i++)
 179                 kfree(drv->fw.dbg_trigger_tlv[i]);
 180
 181         for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
 182                 iwl_free_fw_img(drv, drv->fw.img + i);
 183 }
 184
 185 static int iwl_alloc_fw_desc(struct iwl_drv *drv, struct fw_desc *desc,
 186                              struct fw_sec *sec)
 187 {
 188         void *data;
 189
 190         desc->data = NULL;
 191
 192         if (!sec || !sec->size)
 193                 return -EINVAL;
 194
 195         data = vmalloc(sec->size);
 196         if (!data)
 197                 return -ENOMEM;
 198
 199         desc->len = sec->size;
 200         desc->offset = sec->offset;
 201         memcpy(data, sec->data, desc->len);
 202         desc->data = data;
 203
 204         return 0;
 205 }
 206
 207 static void iwl_req_fw_callback(const struct firmware *ucode_raw,
 208                                 void *context);
 209
 210 #define UCODE_EXPERIMENTAL_INDEX        100
 211 #define UCODE_EXPERIMENTAL_TAG          "exp"
 212
 213 static int iwl_request_firmware(struct iwl_drv *drv, bool first)
 214 {
 215         const char *name_pre = drv->cfg->fw_name_pre;
 216         char tag[8];
 217
 218         if (first) {
 219 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
 220                 drv->fw_index = UCODE_EXPERIMENTAL_INDEX;
 221                 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
 222         } else if (drv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
 223 #endif
 224                 drv->fw_index = drv->cfg->ucode_api_max;
 225                 sprintf(tag, "%d", drv->fw_index);
 226         } else {
 227                 drv->fw_index--;
 228                 sprintf(tag, "%d", drv->fw_index);
 229         }
 230
 231         if (drv->fw_index < drv->cfg->ucode_api_min) {
 232                 IWL_ERR(drv, "no suitable firmware found!\n");
 233                 return -ENOENT;
 234         }
 235
 236         snprintf(drv->firmware_name, sizeof(drv->firmware_name), "%s%s.ucode",
 237                  name_pre, tag);
 238
 239         /*
 240          * Starting 8000B - FW name format has changed. This overwrites the
 241          * previous name and uses the new format.
 242          */
 243         if (drv->trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) {
 244                 char rev_step = 'A' + CSR_HW_REV_STEP(drv->trans->hw_rev);
 245
 246                 snprintf(drv->firmware_name, sizeof(drv->firmware_name),
 247                          "%s%c-%s.ucode", name_pre, rev_step, tag);
 248         }
 249
 250         IWL_DEBUG_INFO(drv, "attempting to load firmware %s'%s'\n",
 251                        (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 252                                 ? "EXPERIMENTAL " : "",
 253                        drv->firmware_name);
 254
 255         return request_firmware_nowait(THIS_MODULE, 1, drv->firmware_name,
 256                                        drv->trans->dev,
 257                                        GFP_KERNEL, drv, iwl_req_fw_callback);
 258 }
 259
 260 struct fw_img_parsing {
 261         struct fw_sec sec[IWL_UCODE_SECTION_MAX];
 262         int sec_counter;
 263 };
 264
 265 /*
 266  * struct fw_sec_parsing: to extract fw section and it's offset from tlv
 267  */
 268 struct fw_sec_parsing {
 269         __le32 offset;
 270         const u8 data[];
 271 } __packed;
 272
 273 /**
 274  * struct iwl_tlv_calib_data - parse the default calib data from TLV
 275  *
 276  * @ucode_type: the uCode to which the following default calib relates.
 277  * @calib: default calibrations.
 278  */
 279 struct iwl_tlv_calib_data {
 280         __le32 ucode_type;
 281         struct iwl_tlv_calib_ctrl calib;
 282 } __packed;
 283
 284 struct iwl_firmware_pieces {
 285         struct fw_img_parsing img[IWL_UCODE_TYPE_MAX];
 286
 287         u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
 288         u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
 289
 290         /* FW debug data parsed for driver usage */
 291         struct iwl_fw_dbg_dest_tlv *dbg_dest_tlv;
 292         struct iwl_fw_dbg_conf_tlv *dbg_conf_tlv[FW_DBG_CONF_MAX];
 293         size_t dbg_conf_tlv_len[FW_DBG_CONF_MAX];
 294         struct iwl_fw_dbg_trigger_tlv *dbg_trigger_tlv[FW_DBG_TRIGGER_MAX];
 295         size_t dbg_trigger_tlv_len[FW_DBG_TRIGGER_MAX];
 296 };
 297
 298 /*
 299  * These functions are just to extract uCode section data from the pieces
 300  * structure.
 301  */
 302 static struct fw_sec *get_sec(struct iwl_firmware_pieces *pieces,
 303                               enum iwl_ucode_type type,
 304                               int  sec)
 305 {
 306         return &pieces->img[type].sec[sec];
 307 }
 308
 309 static void set_sec_data(struct iwl_firmware_pieces *pieces,
 310                          enum iwl_ucode_type type,
 311                          int sec,
 312                          const void *data)
 313 {
 314         pieces->img[type].sec[sec].data = data;
 315 }
 316
 317 static void set_sec_size(struct iwl_firmware_pieces *pieces,
 318                          enum iwl_ucode_type type,
 319                          int sec,
 320                          size_t size)
 321 {
 322         pieces->img[type].sec[sec].size = size;
 323 }
 324
 325 static size_t get_sec_size(struct iwl_firmware_pieces *pieces,
 326                            enum iwl_ucode_type type,
 327                            int sec)
 328 {
 329         return pieces->img[type].sec[sec].size;
 330 }
 331
 332 static void set_sec_offset(struct iwl_firmware_pieces *pieces,
 333                            enum iwl_ucode_type type,
 334                            int sec,
 335                            u32 offset)
 336 {
 337         pieces->img[type].sec[sec].offset = offset;
 338 }
 339
 340 static int iwl_store_cscheme(struct iwl_fw *fw, const u8 *data, const u32 len)
 341 {
 342         int i, j;
 343         struct iwl_fw_cscheme_list *l = (struct iwl_fw_cscheme_list *)data;
 344         struct iwl_fw_cipher_scheme *fwcs;
 345         struct ieee80211_cipher_scheme *cs;
 346         u32 cipher;
 347
 348         if (len < sizeof(*l) ||
 349             len < sizeof(l->size) + l->size * sizeof(l->cs[0]))
 350                 return -EINVAL;
 351
 352         for (i = 0, j = 0; i < IWL_UCODE_MAX_CS && i < l->size; i++) {
 353                 fwcs = &l->cs[j];
 354                 cipher = le32_to_cpu(fwcs->cipher);
 355
 356                 /* we skip schemes with zero cipher suite selector */
 357                 if (!cipher)
 358                         continue;
 359
 360                 cs = &fw->cs[j++];
 361                 cs->cipher = cipher;
 362                 cs->iftype = BIT(NL80211_IFTYPE_STATION);
 363                 cs->hdr_len = fwcs->hdr_len;
 364                 cs->pn_len = fwcs->pn_len;
 365                 cs->pn_off = fwcs->pn_off;
 366                 cs->key_idx_off = fwcs->key_idx_off;
 367                 cs->key_idx_mask = fwcs->key_idx_mask;
 368                 cs->key_idx_shift = fwcs->key_idx_shift;
 369                 cs->mic_len = fwcs->mic_len;
 370         }
 371
 372         return 0;
 373 }
 374
 375 /*
 376  * Gets uCode section from tlv.
 377  */
 378 static int iwl_store_ucode_sec(struct iwl_firmware_pieces *pieces,
 379                                const void *data, enum iwl_ucode_type type,
 380                                int size)
 381 {
 382         struct fw_img_parsing *img;
 383         struct fw_sec *sec;
 384         struct fw_sec_parsing *sec_parse;
 385
 386         if (WARN_ON(!pieces || !data || type >= IWL_UCODE_TYPE_MAX))
 387                 return -1;
 388
 389         sec_parse = (struct fw_sec_parsing *)data;
 390
 391         img = &pieces->img[type];
 392         sec = &img->sec[img->sec_counter];
 393
 394         sec->offset = le32_to_cpu(sec_parse->offset);
 395         sec->data = sec_parse->data;
 396         sec->size = size - sizeof(sec_parse->offset);
 397
 398         ++img->sec_counter;
 399
 400         return 0;
 401 }
 402
 403 static int iwl_set_default_calib(struct iwl_drv *drv, const u8 *data)
 404 {
 405         struct iwl_tlv_calib_data *def_calib =
 406                                         (struct iwl_tlv_calib_data *)data;
 407         u32 ucode_type = le32_to_cpu(def_calib->ucode_type);
 408         if (ucode_type >= IWL_UCODE_TYPE_MAX) {
 409                 IWL_ERR(drv, "Wrong ucode_type %u for default calibration.\n",
 410                         ucode_type);
 411                 return -EINVAL;
 412         }
 413         drv->fw.default_calib[ucode_type].flow_trigger =
 414                 def_calib->calib.flow_trigger;
 415         drv->fw.default_calib[ucode_type].event_trigger =
 416                 def_calib->calib.event_trigger;
 417
 418         return 0;
 419 }
 420
 421 static int iwl_set_ucode_api_flags(struct iwl_drv *drv, const u8 *data,
 422                                    struct iwl_ucode_capabilities *capa)
 423 {
 424         const struct iwl_ucode_api *ucode_api = (void *)data;
 425         u32 api_index = le32_to_cpu(ucode_api->api_index);
 426
 427         if (api_index >= IWL_API_ARRAY_SIZE) {
 428                 IWL_ERR(drv, "api_index larger than supported by driver\n");
 429                 return -EINVAL;
 430         }
 431
 432         capa->api[api_index] = le32_to_cpu(ucode_api->api_flags);
 433
 434         return 0;
 435 }
 436
 437 static int iwl_set_ucode_capabilities(struct iwl_drv *drv, const u8 *data,
 438                                       struct iwl_ucode_capabilities *capa)
 439 {
 440         const struct iwl_ucode_capa *ucode_capa = (void *)data;
 441         u32 api_index = le32_to_cpu(ucode_capa->api_index);
 442
 443         if (api_index >= IWL_CAPABILITIES_ARRAY_SIZE) {
 444                 IWL_ERR(drv, "api_index larger than supported by driver\n");
 445                 return -EINVAL;
 446         }
 447
 448         capa->capa[api_index] = le32_to_cpu(ucode_capa->api_capa);
 449
 450         return 0;
 451 }
 452
 453 static int iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
 454                                     const struct firmware *ucode_raw,
 455                                     struct iwl_firmware_pieces *pieces)
 456 {
 457         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
 458         u32 api_ver, hdr_size, build;
 459         char buildstr[25];
 460         const u8 *src;
 461
 462         drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
 463         api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
 464
 465         switch (api_ver) {
 466         default:
 467                 hdr_size = 28;
 468                 if (ucode_raw->size < hdr_size) {
 469                         IWL_ERR(drv, "File size too small!\n");
 470                         return -EINVAL;
 471                 }
 472                 build = le32_to_cpu(ucode->u.v2.build);
 473                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 474                              le32_to_cpu(ucode->u.v2.inst_size));
 475                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 476                              le32_to_cpu(ucode->u.v2.data_size));
 477                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 478                              le32_to_cpu(ucode->u.v2.init_size));
 479                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 480                              le32_to_cpu(ucode->u.v2.init_data_size));
 481                 src = ucode->u.v2.data;
 482                 break;
 483         case 0:
 484         case 1:
 485         case 2:
 486                 hdr_size = 24;
 487                 if (ucode_raw->size < hdr_size) {
 488                         IWL_ERR(drv, "File size too small!\n");
 489                         return -EINVAL;
 490                 }
 491                 build = 0;
 492                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 493                              le32_to_cpu(ucode->u.v1.inst_size));
 494                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 495                              le32_to_cpu(ucode->u.v1.data_size));
 496                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 497                              le32_to_cpu(ucode->u.v1.init_size));
 498                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 499                              le32_to_cpu(ucode->u.v1.init_data_size));
 500                 src = ucode->u.v1.data;
 501                 break;
 502         }
 503
 504         if (build)
 505                 sprintf(buildstr, " build %u%s", build,
 506                        (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 507                                 ? " (EXP)" : "");
 508         else
 509                 buildstr[0] = '\0';
 510
 511         snprintf(drv->fw.fw_version,
 512                  sizeof(drv->fw.fw_version),
 513                  "%u.%u.%u.%u%s",
 514                  IWL_UCODE_MAJOR(drv->fw.ucode_ver),
 515                  IWL_UCODE_MINOR(drv->fw.ucode_ver),
 516                  IWL_UCODE_API(drv->fw.ucode_ver),
 517                  IWL_UCODE_SERIAL(drv->fw.ucode_ver),
 518                  buildstr);
 519
 520         /* Verify size of file vs. image size info in file's header */
 521
 522         if (ucode_raw->size != hdr_size +
 523             get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) +
 524             get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) +
 525             get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) +
 526             get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)) {
 527
 528                 IWL_ERR(drv,
 529                         "uCode file size %d does not match expected size\n",
 530                         (int)ucode_raw->size);
 531                 return -EINVAL;
 532         }
 533
 534
 535         set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, src);
 536         src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST);
 537         set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 538                        IWLAGN_RTC_INST_LOWER_BOUND);
 539         set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, src);
 540         src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA);
 541         set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 542                        IWLAGN_RTC_DATA_LOWER_BOUND);
 543         set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, src);
 544         src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST);
 545         set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 546                        IWLAGN_RTC_INST_LOWER_BOUND);
 547         set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, src);
 548         src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA);
 549         set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 550                        IWLAGN_RTC_DATA_LOWER_BOUND);
 551         return 0;
 552 }
 553
 554 static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
 555                                 const struct firmware *ucode_raw,
 556                                 struct iwl_firmware_pieces *pieces,
 557                                 struct iwl_ucode_capabilities *capa)
 558 {
 559         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
 560         struct iwl_ucode_tlv *tlv;
 561         size_t len = ucode_raw->size;
 562         const u8 *data;
 563         u32 tlv_len;
 564         enum iwl_ucode_tlv_type tlv_type;
 565         const u8 *tlv_data;
 566         char buildstr[25];
 567         u32 build;
 568         int num_of_cpus;
 569         bool usniffer_images = false;
 570         bool usniffer_req = false;
 571
 572         if (len < sizeof(*ucode)) {
 573                 IWL_ERR(drv, "uCode has invalid length: %zd\n", len);
 574                 return -EINVAL;
 575         }
 576
 577         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
 578                 IWL_ERR(drv, "invalid uCode magic: 0X%x\n",
 579                         le32_to_cpu(ucode->magic));
 580                 return -EINVAL;
 581         }
 582
 583         drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
 584         memcpy(drv->fw.human_readable, ucode->human_readable,
 585                sizeof(drv->fw.human_readable));
 586         build = le32_to_cpu(ucode->build);
 587
 588         if (build)
 589                 sprintf(buildstr, " build %u%s", build,
 590                        (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 591                                 ? " (EXP)" : "");
 592         else
 593                 buildstr[0] = '\0';
 594
 595         snprintf(drv->fw.fw_version,
 596                  sizeof(drv->fw.fw_version),
 597                  "%u.%u.%u.%u%s",
 598                  IWL_UCODE_MAJOR(drv->fw.ucode_ver),
 599                  IWL_UCODE_MINOR(drv->fw.ucode_ver),
 600                  IWL_UCODE_API(drv->fw.ucode_ver),
 601                  IWL_UCODE_SERIAL(drv->fw.ucode_ver),
 602                  buildstr);
 603
 604         data = ucode->data;
 605
 606         len -= sizeof(*ucode);
 607
 608         while (len >= sizeof(*tlv)) {
 609                 len -= sizeof(*tlv);
 610                 tlv = (void *)data;
 611
 612                 tlv_len = le32_to_cpu(tlv->length);
 613                 tlv_type = le32_to_cpu(tlv->type);
 614                 tlv_data = tlv->data;
 615
 616                 if (len < tlv_len) {
 617                         IWL_ERR(drv, "invalid TLV len: %zd/%u\n",
 618                                 len, tlv_len);
 619                         return -EINVAL;
 620                 }
 621                 len -= ALIGN(tlv_len, 4);
 622                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
 623
 624                 switch (tlv_type) {
 625                 case IWL_UCODE_TLV_INST:
 626                         set_sec_data(pieces, IWL_UCODE_REGULAR,
 627                                      IWL_UCODE_SECTION_INST, tlv_data);
 628                         set_sec_size(pieces, IWL_UCODE_REGULAR,
 629                                      IWL_UCODE_SECTION_INST, tlv_len);
 630                         set_sec_offset(pieces, IWL_UCODE_REGULAR,
 631                                        IWL_UCODE_SECTION_INST,
 632                                        IWLAGN_RTC_INST_LOWER_BOUND);
 633                         break;
 634                 case IWL_UCODE_TLV_DATA:
 635                         set_sec_data(pieces, IWL_UCODE_REGULAR,
 636                                      IWL_UCODE_SECTION_DATA, tlv_data);
 637                         set_sec_size(pieces, IWL_UCODE_REGULAR,
 638                                      IWL_UCODE_SECTION_DATA, tlv_len);
 639                         set_sec_offset(pieces, IWL_UCODE_REGULAR,
 640                                        IWL_UCODE_SECTION_DATA,
 641                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 642                         break;
 643                 case IWL_UCODE_TLV_INIT:
 644                         set_sec_data(pieces, IWL_UCODE_INIT,
 645                                      IWL_UCODE_SECTION_INST, tlv_data);
 646                         set_sec_size(pieces, IWL_UCODE_INIT,
 647                                      IWL_UCODE_SECTION_INST, tlv_len);
 648                         set_sec_offset(pieces, IWL_UCODE_INIT,
 649                                        IWL_UCODE_SECTION_INST,
 650                                        IWLAGN_RTC_INST_LOWER_BOUND);
 651                         break;
 652                 case IWL_UCODE_TLV_INIT_DATA:
 653                         set_sec_data(pieces, IWL_UCODE_INIT,
 654                                      IWL_UCODE_SECTION_DATA, tlv_data);
 655                         set_sec_size(pieces, IWL_UCODE_INIT,
 656                                      IWL_UCODE_SECTION_DATA, tlv_len);
 657                         set_sec_offset(pieces, IWL_UCODE_INIT,
 658                                        IWL_UCODE_SECTION_DATA,
 659                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 660                         break;
 661                 case IWL_UCODE_TLV_BOOT:
 662                         IWL_ERR(drv, "Found unexpected BOOT ucode\n");
 663                         break;
 664                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
 665                         if (tlv_len != sizeof(u32))
 666                                 goto invalid_tlv_len;
 667                         capa->max_probe_length =
 668                                         le32_to_cpup((__le32 *)tlv_data);
 669                         break;
 670                 case IWL_UCODE_TLV_PAN:
 671                         if (tlv_len)
 672                                 goto invalid_tlv_len;
 673                         capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
 674                         break;
 675                 case IWL_UCODE_TLV_FLAGS:
 676                         /* must be at least one u32 */
 677                         if (tlv_len < sizeof(u32))
 678                                 goto invalid_tlv_len;
 679                         /* and a proper number of u32s */
 680                         if (tlv_len % sizeof(u32))
 681                                 goto invalid_tlv_len;
 682                         /*
 683                          * This driver only reads the first u32 as
 684                          * right now no more features are defined,
 685                          * if that changes then either the driver
 686                          * will not work with the new firmware, or
 687                          * it'll not take advantage of new features.
 688                          */
 689                         capa->flags = le32_to_cpup((__le32 *)tlv_data);
 690                         break;
 691                 case IWL_UCODE_TLV_API_CHANGES_SET:
 692                         if (tlv_len != sizeof(struct iwl_ucode_api))
 693                                 goto invalid_tlv_len;
 694                         if (iwl_set_ucode_api_flags(drv, tlv_data, capa))
 695                                 goto tlv_error;
 696                         break;
 697                 case IWL_UCODE_TLV_ENABLED_CAPABILITIES:
 698                         if (tlv_len != sizeof(struct iwl_ucode_capa))
 699                                 goto invalid_tlv_len;
 700                         if (iwl_set_ucode_capabilities(drv, tlv_data, capa))
 701                                 goto tlv_error;
 702                         break;
 703                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
 704                         if (tlv_len != sizeof(u32))
 705                                 goto invalid_tlv_len;
 706                         pieces->init_evtlog_ptr =
 707                                         le32_to_cpup((__le32 *)tlv_data);
 708                         break;
 709                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
 710                         if (tlv_len != sizeof(u32))
 711                                 goto invalid_tlv_len;
 712                         pieces->init_evtlog_size =
 713                                         le32_to_cpup((__le32 *)tlv_data);
 714                         break;
 715                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
 716                         if (tlv_len != sizeof(u32))
 717                                 goto invalid_tlv_len;
 718                         pieces->init_errlog_ptr =
 719                                         le32_to_cpup((__le32 *)tlv_data);
 720                         break;
 721                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
 722                         if (tlv_len != sizeof(u32))
 723                                 goto invalid_tlv_len;
 724                         pieces->inst_evtlog_ptr =
 725                                         le32_to_cpup((__le32 *)tlv_data);
 726                         break;
 727                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
 728                         if (tlv_len != sizeof(u32))
 729                                 goto invalid_tlv_len;
 730                         pieces->inst_evtlog_size =
 731                                         le32_to_cpup((__le32 *)tlv_data);
 732                         break;
 733                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
 734                         if (tlv_len != sizeof(u32))
 735                                 goto invalid_tlv_len;
 736                         pieces->inst_errlog_ptr =
 737                                         le32_to_cpup((__le32 *)tlv_data);
 738                         break;
 739                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
 740                         if (tlv_len)
 741                                 goto invalid_tlv_len;
 742                         drv->fw.enhance_sensitivity_table = true;
 743                         break;
 744                 case IWL_UCODE_TLV_WOWLAN_INST:
 745                         set_sec_data(pieces, IWL_UCODE_WOWLAN,
 746                                      IWL_UCODE_SECTION_INST, tlv_data);
 747                         set_sec_size(pieces, IWL_UCODE_WOWLAN,
 748                                      IWL_UCODE_SECTION_INST, tlv_len);
 749                         set_sec_offset(pieces, IWL_UCODE_WOWLAN,
 750                                        IWL_UCODE_SECTION_INST,
 751                                        IWLAGN_RTC_INST_LOWER_BOUND);
 752                         break;
 753                 case IWL_UCODE_TLV_WOWLAN_DATA:
 754                         set_sec_data(pieces, IWL_UCODE_WOWLAN,
 755                                      IWL_UCODE_SECTION_DATA, tlv_data);
 756                         set_sec_size(pieces, IWL_UCODE_WOWLAN,
 757                                      IWL_UCODE_SECTION_DATA, tlv_len);
 758                         set_sec_offset(pieces, IWL_UCODE_WOWLAN,
 759                                        IWL_UCODE_SECTION_DATA,
 760                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 761                         break;
 762                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
 763                         if (tlv_len != sizeof(u32))
 764                                 goto invalid_tlv_len;
 765                         capa->standard_phy_calibration_size =
 766                                         le32_to_cpup((__le32 *)tlv_data);
 767                         break;
 768                  case IWL_UCODE_TLV_SEC_RT:
 769                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
 770                                             tlv_len);
 771                         drv->fw.mvm_fw = true;
 772                         break;
 773                 case IWL_UCODE_TLV_SEC_INIT:
 774                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
 775                                             tlv_len);
 776                         drv->fw.mvm_fw = true;
 777                         break;
 778                 case IWL_UCODE_TLV_SEC_WOWLAN:
 779                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
 780                                             tlv_len);
 781                         drv->fw.mvm_fw = true;
 782                         break;
 783                 case IWL_UCODE_TLV_DEF_CALIB:
 784                         if (tlv_len != sizeof(struct iwl_tlv_calib_data))
 785                                 goto invalid_tlv_len;
 786                         if (iwl_set_default_calib(drv, tlv_data))
 787                                 goto tlv_error;
 788                         break;
 789                 case IWL_UCODE_TLV_PHY_SKU:
 790                         if (tlv_len != sizeof(u32))
 791                                 goto invalid_tlv_len;
 792                         drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data);
 793                         drv->fw.valid_tx_ant = (drv->fw.phy_config &
 794                                                 FW_PHY_CFG_TX_CHAIN) >>
 795                                                 FW_PHY_CFG_TX_CHAIN_POS;
 796                         drv->fw.valid_rx_ant = (drv->fw.phy_config &
 797                                                 FW_PHY_CFG_RX_CHAIN) >>
 798                                                 FW_PHY_CFG_RX_CHAIN_POS;
 799                         break;
 800                  case IWL_UCODE_TLV_SECURE_SEC_RT:
 801                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
 802                                             tlv_len);
 803                         drv->fw.mvm_fw = true;
 804                         break;
 805                 case IWL_UCODE_TLV_SECURE_SEC_INIT:
 806                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
 807                                             tlv_len);
 808                         drv->fw.mvm_fw = true;
 809                         break;
 810                 case IWL_UCODE_TLV_SECURE_SEC_WOWLAN:
 811                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
 812                                             tlv_len);
 813                         drv->fw.mvm_fw = true;
 814                         break;
 815                 case IWL_UCODE_TLV_NUM_OF_CPU:
 816                         if (tlv_len != sizeof(u32))
 817                                 goto invalid_tlv_len;
 818                         num_of_cpus =
 819                                 le32_to_cpup((__le32 *)tlv_data);
 820
 821                         if (num_of_cpus == 2) {
 822                                 drv->fw.img[IWL_UCODE_REGULAR].is_dual_cpus =
 823                                         true;
 824                                 drv->fw.img[IWL_UCODE_INIT].is_dual_cpus =
 825                                         true;
 826                                 drv->fw.img[IWL_UCODE_WOWLAN].is_dual_cpus =
 827                                         true;
 828                         } else if ((num_of_cpus > 2) || (num_of_cpus < 1)) {
 829                                 IWL_ERR(drv, "Driver support upto 2 CPUs\n");
 830                                 return -EINVAL;
 831                         }
 832                         break;
 833                 case IWL_UCODE_TLV_CSCHEME:
 834                         if (iwl_store_cscheme(&drv->fw, tlv_data, tlv_len))
 835                                 goto invalid_tlv_len;
 836                         break;
 837                 case IWL_UCODE_TLV_N_SCAN_CHANNELS:
 838                         if (tlv_len != sizeof(u32))
 839                                 goto invalid_tlv_len;
 840                         capa->n_scan_channels =
 841                                 le32_to_cpup((__le32 *)tlv_data);
 842                         break;
 843                 case IWL_UCODE_TLV_FW_VERSION: {
 844                         __le32 *ptr = (void *)tlv_data;
 845                         u32 major, minor;
 846                         u8 local_comp;
 847
 848                         if (tlv_len != sizeof(u32) * 3)
 849                                 goto invalid_tlv_len;
 850
 851                         major = le32_to_cpup(ptr++);
 852                         minor = le32_to_cpup(ptr++);
 853                         local_comp = le32_to_cpup(ptr);
 854
 855                         snprintf(drv->fw.fw_version,
 856                                  sizeof(drv->fw.fw_version), "%u.%u.%u",
 857                                  major, minor, local_comp);
 858                         break;
 859                         }
 860                 case IWL_UCODE_TLV_FW_DBG_DEST: {
 861                         struct iwl_fw_dbg_dest_tlv *dest = (void *)tlv_data;
 862
 863                         if (pieces->dbg_dest_tlv) {
 864                                 IWL_ERR(drv,
 865                                         "dbg destination ignored, already exists\n");
 866                                 break;
 867                         }
 868
 869                         pieces->dbg_dest_tlv = dest;
 870                         IWL_INFO(drv, "Found debug destination: %s\n",
 871                                  get_fw_dbg_mode_string(dest->monitor_mode));
 872
 873                         drv->fw.dbg_dest_reg_num =
 874                                 tlv_len - offsetof(struct iwl_fw_dbg_dest_tlv,
 875                                                    reg_ops);
 876                         drv->fw.dbg_dest_reg_num /=
 877                                 sizeof(drv->fw.dbg_dest_tlv->reg_ops[0]);
 878
 879                         break;
 880                         }
 881                 case IWL_UCODE_TLV_FW_DBG_CONF: {
 882                         struct iwl_fw_dbg_conf_tlv *conf = (void *)tlv_data;
 883
 884                         if (!pieces->dbg_dest_tlv) {
 885                                 IWL_ERR(drv,
 886                                         "Ignore dbg config %d - no destination configured\n",
 887                                         conf->id);
 888                                 break;
 889                         }
 890
 891                         if (conf->id >= ARRAY_SIZE(drv->fw.dbg_conf_tlv)) {
 892                                 IWL_ERR(drv,
 893                                         "Skip unknown configuration: %d\n",
 894                                         conf->id);
 895                                 break;
 896                         }
 897
 898                         if (pieces->dbg_conf_tlv[conf->id]) {
 899                                 IWL_ERR(drv,
 900                                         "Ignore duplicate dbg config %d\n",
 901                                         conf->id);
 902                                 break;
 903                         }
 904
 905                         if (conf->usniffer)
 906                                 usniffer_req = true;
 907
 908                         IWL_INFO(drv, "Found debug configuration: %d\n",
 909                                  conf->id);
 910
 911                         pieces->dbg_conf_tlv[conf->id] = conf;
 912                         pieces->dbg_conf_tlv_len[conf->id] = tlv_len;
 913                         break;
 914                         }
 915                 case IWL_UCODE_TLV_FW_DBG_TRIGGER: {
 916                         struct iwl_fw_dbg_trigger_tlv *trigger =
 917                                 (void *)tlv_data;
 918                         u32 trigger_id = le32_to_cpu(trigger->id);
 919
 920                         if (trigger_id >= ARRAY_SIZE(drv->fw.dbg_trigger_tlv)) {
 921                                 IWL_ERR(drv,
 922                                         "Skip unknown trigger: %u\n",
 923                                         trigger->id);
 924                                 break;
 925                         }
 926
 927                         if (pieces->dbg_trigger_tlv[trigger_id]) {
 928                                 IWL_ERR(drv,
 929                                         "Ignore duplicate dbg trigger %u\n",
 930                                         trigger->id);
 931                                 break;
 932                         }
 933
 934                         IWL_INFO(drv, "Found debug trigger: %u\n", trigger->id);
 935
 936                         pieces->dbg_trigger_tlv[trigger_id] = trigger;
 937                         pieces->dbg_trigger_tlv_len[trigger_id] = tlv_len;
 938                         break;
 939                         }
 940                 case IWL_UCODE_TLV_SEC_RT_USNIFFER:
 941                         usniffer_images = true;
 942                         iwl_store_ucode_sec(pieces, tlv_data,
 943                                             IWL_UCODE_REGULAR_USNIFFER,
 944                                             tlv_len);
 945                         break;
 946                 case IWL_UCODE_TLV_SDIO_ADMA_ADDR:
 947                         if (tlv_len != sizeof(u32))
 948                                 goto invalid_tlv_len;
 949                         drv->fw.sdio_adma_addr =
 950                                 le32_to_cpup((__le32 *)tlv_data);
 951                         break;
 952                 default:
 953                         IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
 954                         break;
 955                 }
 956         }
 957
 958         if (usniffer_req && !usniffer_images) {
 959                 IWL_ERR(drv,
 960                         "user selected to work with usniffer but usniffer image isn't available in ucode package\n");
 961                 return -EINVAL;
 962         }
 963
 964         if (len) {
 965                 IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
 966                 iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len);
 967                 return -EINVAL;
 968         }
 969
 970         return 0;
 971
 972  invalid_tlv_len:
 973         IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
 974  tlv_error:
 975         iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);
 976
 977         return -EINVAL;
 978 }
 979
 980 static int iwl_alloc_ucode(struct iwl_drv *drv,
 981                            struct iwl_firmware_pieces *pieces,
 982                            enum iwl_ucode_type type)
 983 {
 984         int i;
 985         for (i = 0;
 986              i < IWL_UCODE_SECTION_MAX && get_sec_size(pieces, type, i);
 987              i++)
 988                 if (iwl_alloc_fw_desc(drv, &(drv->fw.img[type].sec[i]),
 989                                       get_sec(pieces, type, i)))
 990                         return -ENOMEM;
 991         return 0;
 992 }
 993
 994 static int validate_sec_sizes(struct iwl_drv *drv,
 995                               struct iwl_firmware_pieces *pieces,
 996                               const struct iwl_cfg *cfg)
 997 {
 998         IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %Zd\n",
 999                 get_sec_size(pieces, IWL_UCODE_REGULAR,
1000                              IWL_UCODE_SECTION_INST));
1001         IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %Zd\n",
1002                 get_sec_size(pieces, IWL_UCODE_REGULAR,
1003                              IWL_UCODE_SECTION_DATA));
1004         IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %Zd\n",
1005                 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST));
1006         IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %Zd\n",
1007                 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA));
1008
1009         /* Verify that uCode images will fit in card's SRAM. */
1010         if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
1011             cfg->max_inst_size) {
1012                 IWL_ERR(drv, "uCode instr len %Zd too large to fit in\n",
1013                         get_sec_size(pieces, IWL_UCODE_REGULAR,
1014                                      IWL_UCODE_SECTION_INST));
1015                 return -1;
1016         }
1017
1018         if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
1019             cfg->max_data_size) {
1020                 IWL_ERR(drv, "uCode data len %Zd too large to fit in\n",
1021                         get_sec_size(pieces, IWL_UCODE_REGULAR,
1022                                      IWL_UCODE_SECTION_DATA));
1023                 return -1;
1024         }
1025
1026         if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) >
1027              cfg->max_inst_size) {
1028                 IWL_ERR(drv, "uCode init instr len %Zd too large to fit in\n",
1029                         get_sec_size(pieces, IWL_UCODE_INIT,
1030                                      IWL_UCODE_SECTION_INST));
1031                 return -1;
1032         }
1033
1034         if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA) >
1035             cfg->max_data_size) {
1036                 IWL_ERR(drv, "uCode init data len %Zd too large to fit in\n",
1037                         get_sec_size(pieces, IWL_UCODE_REGULAR,
1038                                      IWL_UCODE_SECTION_DATA));
1039                 return -1;
1040         }
1041         return 0;
1042 }
1043
1044 static struct iwl_op_mode *
1045 _iwl_op_mode_start(struct iwl_drv *drv, struct iwlwifi_opmode_table *op)
1046 {
1047         const struct iwl_op_mode_ops *ops = op->ops;
1048         struct dentry *dbgfs_dir = NULL;
1049         struct iwl_op_mode *op_mode = NULL;
1050
1051 #ifdef CONFIG_IWLWIFI_DEBUGFS
1052         drv->dbgfs_op_mode = debugfs_create_dir(op->name,
1053                                                 drv->dbgfs_drv);
1054         if (!drv->dbgfs_op_mode) {
1055                 IWL_ERR(drv,
1056                         "failed to create opmode debugfs directory\n");
1057                 return op_mode;
1058         }
1059         dbgfs_dir = drv->dbgfs_op_mode;
1060 #endif
1061
1062         op_mode = ops->start(drv->trans, drv->cfg, &drv->fw, dbgfs_dir);
1063
1064 #ifdef CONFIG_IWLWIFI_DEBUGFS
1065         if (!op_mode) {
1066                 debugfs_remove_recursive(drv->dbgfs_op_mode);
1067                 drv->dbgfs_op_mode = NULL;
1068         }
1069 #endif
1070
1071         return op_mode;
1072 }
1073
1074 static void _iwl_op_mode_stop(struct iwl_drv *drv)
1075 {
1076         /* op_mode can be NULL if its start failed */
1077         if (drv->op_mode) {
1078                 iwl_op_mode_stop(drv->op_mode);
1079                 drv->op_mode = NULL;
1080
1081 #ifdef CONFIG_IWLWIFI_DEBUGFS
1082                 debugfs_remove_recursive(drv->dbgfs_op_mode);
1083                 drv->dbgfs_op_mode = NULL;
1084 #endif
1085         }
1086 }
1087
1088 /**
1089  * iwl_req_fw_callback - callback when firmware was loaded
1090  *
1091  * If loaded successfully, copies the firmware into buffers
1092  * for the card to fetch (via DMA).
1093  */
1094 static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
1095 {
1096         struct iwl_drv *drv = context;
1097         struct iwl_fw *fw = &drv->fw;
1098         struct iwl_ucode_header *ucode;
1099         struct iwlwifi_opmode_table *op;
1100         int err;
1101         struct iwl_firmware_pieces *pieces;
1102         const unsigned int api_max = drv->cfg->ucode_api_max;
1103         unsigned int api_ok = drv->cfg->ucode_api_ok;
1104         const unsigned int api_min = drv->cfg->ucode_api_min;
1105         size_t trigger_tlv_sz[FW_DBG_TRIGGER_MAX];
1106         u32 api_ver;
1107         int i;
1108         bool load_module = false;
1109
1110         fw->ucode_capa.max_probe_length = IWL_DEFAULT_MAX_PROBE_LENGTH;
1111         fw->ucode_capa.standard_phy_calibration_size =
1112                         IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1113         fw->ucode_capa.n_scan_channels = IWL_DEFAULT_SCAN_CHANNELS;
1114
1115         if (!api_ok)
1116                 api_ok = api_max;
1117
1118         pieces = kzalloc(sizeof(*pieces), GFP_KERNEL);
1119         if (!pieces)
1120                 return;
1121
1122         if (!ucode_raw) {
1123                 if (drv->fw_index <= api_ok)
1124                         IWL_ERR(drv,
1125                                 "request for firmware file '%s' failed.\n",
1126                                 drv->firmware_name);
1127                 goto try_again;
1128         }
1129
1130         IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
1131                        drv->firmware_name, ucode_raw->size);
1132
1133         /* Make sure that we got at least the API version number */
1134         if (ucode_raw->size < 4) {
1135                 IWL_ERR(drv, "File size way too small!\n");
1136                 goto try_again;
1137         }
1138
1139         /* Data from ucode file:  header followed by uCode images */
1140         ucode = (struct iwl_ucode_header *)ucode_raw->data;
1141
1142         if (ucode->ver)
1143                 err = iwl_parse_v1_v2_firmware(drv, ucode_raw, pieces);
1144         else
1145                 err = iwl_parse_tlv_firmware(drv, ucode_raw, pieces,
1146                                              &fw->ucode_capa);
1147
1148         if (err)
1149                 goto try_again;
1150
1151         if (drv->fw.ucode_capa.api[0] & IWL_UCODE_TLV_API_NEW_VERSION)
1152                 api_ver = drv->fw.ucode_ver;
1153         else
1154                 api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
1155
1156         /*
1157          * api_ver should match the api version forming part of the
1158          * firmware filename ... but we don't check for that and only rely
1159          * on the API version read from firmware header from here on forward
1160          */
1161         /* no api version check required for experimental uCode */
1162         if (drv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1163                 if (api_ver < api_min || api_ver > api_max) {
1164                         IWL_ERR(drv,
1165                                 "Driver unable to support your firmware API. "
1166                                 "Driver supports v%u, firmware is v%u.\n",
1167                                 api_max, api_ver);
1168                         goto try_again;
1169                 }
1170
1171                 if (api_ver < api_ok) {
1172                         if (api_ok != api_max)
1173                                 IWL_ERR(drv, "Firmware has old API version, "
1174                                         "expected v%u through v%u, got v%u.\n",
1175                                         api_ok, api_max, api_ver);
1176                         else
1177                                 IWL_ERR(drv, "Firmware has old API version, "
1178                                         "expected v%u, got v%u.\n",
1179                                         api_max, api_ver);
1180                         IWL_ERR(drv, "New firmware can be obtained from "
1181                                       "http://www.intellinuxwireless.org/.\n");
1182                 }
1183         }
1184
1185         /*
1186          * In mvm uCode there is no difference between data and instructions
1187          * sections.
1188          */
1189         if (!fw->mvm_fw && validate_sec_sizes(drv, pieces, drv->cfg))
1190                 goto try_again;
1191
1192         /* Allocate ucode buffers for card's bus-master loading ... */
1193
1194         /* Runtime instructions and 2 copies of data:
1195          * 1) unmodified from disk
1196          * 2) backup cache for save/restore during power-downs */
1197         for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
1198                 if (iwl_alloc_ucode(drv, pieces, i))
1199                         goto out_free_fw;
1200
1201         if (pieces->dbg_dest_tlv) {
1202                 drv->fw.dbg_dest_tlv =
1203                         kmemdup(pieces->dbg_dest_tlv,
1204                                 sizeof(*pieces->dbg_dest_tlv) +
1205                                 sizeof(pieces->dbg_dest_tlv->reg_ops[0]) *
1206                                 drv->fw.dbg_dest_reg_num, GFP_KERNEL);
1207
1208                 if (!drv->fw.dbg_dest_tlv)
1209                         goto out_free_fw;
1210         }
1211
1212         for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_conf_tlv); i++) {
1213                 if (pieces->dbg_conf_tlv[i]) {
1214                         drv->fw.dbg_conf_tlv_len[i] =
1215                                 pieces->dbg_conf_tlv_len[i];
1216                         drv->fw.dbg_conf_tlv[i] =
1217                                 kmemdup(pieces->dbg_conf_tlv[i],
1218                                         drv->fw.dbg_conf_tlv_len[i],
1219                                         GFP_KERNEL);
1220                         if (!drv->fw.dbg_conf_tlv[i])
1221                                 goto out_free_fw;
1222                 }
1223         }
1224
1225         memset(&trigger_tlv_sz, 0xff, sizeof(trigger_tlv_sz));
1226
1227         trigger_tlv_sz[FW_DBG_TRIGGER_MISSED_BEACONS] =
1228                 sizeof(struct iwl_fw_dbg_trigger_missed_bcon);
1229         trigger_tlv_sz[FW_DBG_TRIGGER_CHANNEL_SWITCH] = 0;
1230         trigger_tlv_sz[FW_DBG_TRIGGER_FW_NOTIF] =
1231                 sizeof(struct iwl_fw_dbg_trigger_cmd);
1232         trigger_tlv_sz[FW_DBG_TRIGGER_MLME] =
1233                 sizeof(struct iwl_fw_dbg_trigger_mlme);
1234         trigger_tlv_sz[FW_DBG_TRIGGER_STATS] =
1235                 sizeof(struct iwl_fw_dbg_trigger_stats);
1236         trigger_tlv_sz[FW_DBG_TRIGGER_RSSI] =
1237                 sizeof(struct iwl_fw_dbg_trigger_low_rssi);
1238         trigger_tlv_sz[FW_DBG_TRIGGER_TXQ_TIMERS] =
1239                 sizeof(struct iwl_fw_dbg_trigger_txq_timer);
1240         trigger_tlv_sz[FW_DBG_TRIGGER_TIME_EVENT] =
1241                 sizeof(struct iwl_fw_dbg_trigger_time_event);
1242
1243         for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_trigger_tlv); i++) {
1244                 if (pieces->dbg_trigger_tlv[i]) {
1245                         /*
1246                          * If the trigger isn't long enough, WARN and exit.
1247                          * Someone is trying to debug something and he won't
1248                          * be able to catch the bug he is trying to chase.
1249                          * We'd better be noisy to be sure he knows what's
1250                          * going on.
1251                          */
1252                         if (WARN_ON(pieces->dbg_trigger_tlv_len[i] <
1253                                     (trigger_tlv_sz[i] +
1254                                      sizeof(struct iwl_fw_dbg_trigger_tlv))))
1255                                 goto out_free_fw;
1256                         drv->fw.dbg_trigger_tlv_len[i] =
1257                                 pieces->dbg_trigger_tlv_len[i];
1258                         drv->fw.dbg_trigger_tlv[i] =
1259                                 kmemdup(pieces->dbg_trigger_tlv[i],
1260                                         drv->fw.dbg_trigger_tlv_len[i],
1261                                         GFP_KERNEL);
1262                         if (!drv->fw.dbg_trigger_tlv[i])
1263                                 goto out_free_fw;
1264                 }
1265         }
1266
1267         /* Now that we can no longer fail, copy information */
1268
1269         /*
1270          * The (size - 16) / 12 formula is based on the information recorded
1271          * for each event, which is of mode 1 (including timestamp) for all
1272          * new microcodes that include this information.
1273          */
1274         fw->init_evtlog_ptr = pieces->init_evtlog_ptr;
1275         if (pieces->init_evtlog_size)
1276                 fw->init_evtlog_size = (pieces->init_evtlog_size - 16)/12;
1277         else
1278                 fw->init_evtlog_size =
1279                         drv->cfg->base_params->max_event_log_size;
1280         fw->init_errlog_ptr = pieces->init_errlog_ptr;
1281         fw->inst_evtlog_ptr = pieces->inst_evtlog_ptr;
1282         if (pieces->inst_evtlog_size)
1283                 fw->inst_evtlog_size = (pieces->inst_evtlog_size - 16)/12;
1284         else
1285                 fw->inst_evtlog_size =
1286                         drv->cfg->base_params->max_event_log_size;
1287         fw->inst_errlog_ptr = pieces->inst_errlog_ptr;
1288
1289         /*
1290          * figure out the offset of chain noise reset and gain commands
1291          * base on the size of standard phy calibration commands table size
1292          */
1293         if (fw->ucode_capa.standard_phy_calibration_size >
1294             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1295                 fw->ucode_capa.standard_phy_calibration_size =
1296                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1297
1298         /* We have our copies now, allow OS release its copies */
1299         release_firmware(ucode_raw);
1300
1301         mutex_lock(&iwlwifi_opmode_table_mtx);
1302         if (fw->mvm_fw)
1303                 op = &iwlwifi_opmode_table[MVM_OP_MODE];
1304         else
1305                 op = &iwlwifi_opmode_table[DVM_OP_MODE];
1306
1307         IWL_INFO(drv, "loaded firmware version %s op_mode %s\n",
1308                  drv->fw.fw_version, op->name);
1309
1310         /* add this device to the list of devices using this op_mode */
1311         list_add_tail(&drv->list, &op->drv);
1312
1313         if (op->ops) {
1314                 drv->op_mode = _iwl_op_mode_start(drv, op);
1315
1316                 if (!drv->op_mode) {
1317                         mutex_unlock(&iwlwifi_opmode_table_mtx);
1318                         goto out_unbind;
1319                 }
1320         } else {
1321                 load_module = true;
1322         }
1323         mutex_unlock(&iwlwifi_opmode_table_mtx);
1324
1325         /*
1326          * Complete the firmware request last so that
1327          * a driver unbind (stop) doesn't run while we
1328          * are doing the start() above.
1329          */
1330         complete(&drv->request_firmware_complete);
1331
1332         /*
1333          * Load the module last so we don't block anything
1334          * else from proceeding if the module fails to load
1335          * or hangs loading.
1336          */
1337         if (load_module) {
1338                 err = request_module("%s", op->name);
1339 #ifdef CONFIG_IWLWIFI_OPMODE_MODULAR
1340                 if (err)
1341                         IWL_ERR(drv,
1342                                 "failed to load module %s (error %d), is dynamic loading enabled?\n",
1343                                 op->name, err);
1344 #endif
1345         }
1346         kfree(pieces);
1347         return;
1348
1349  try_again:
1350         /* try next, if any */
1351         release_firmware(ucode_raw);
1352         if (iwl_request_firmware(drv, false))
1353                 goto out_unbind;
1354         kfree(pieces);
1355         return;
1356
1357  out_free_fw:
1358         IWL_ERR(drv, "failed to allocate pci memory\n");
1359         iwl_dealloc_ucode(drv);
1360         release_firmware(ucode_raw);
1361  out_unbind:
1362         kfree(pieces);
1363         complete(&drv->request_firmware_complete);
1364         device_release_driver(drv->trans->dev);
1365 }
1366
1367 struct iwl_drv *iwl_drv_start(struct iwl_trans *trans,
1368                               const struct iwl_cfg *cfg)
1369 {
1370         struct iwl_drv *drv;
1371         int ret;
1372
1373         drv = kzalloc(sizeof(*drv), GFP_KERNEL);
1374         if (!drv) {
1375                 ret = -ENOMEM;
1376                 goto err;
1377         }
1378
1379         drv->trans = trans;
1380         drv->dev = trans->dev;
1381         drv->cfg = cfg;
1382
1383         init_completion(&drv->request_firmware_complete);
1384         INIT_LIST_HEAD(&drv->list);
1385
1386 #ifdef CONFIG_IWLWIFI_DEBUGFS
1387         /* Create the device debugfs entries. */
1388         drv->dbgfs_drv = debugfs_create_dir(dev_name(trans->dev),
1389                                             iwl_dbgfs_root);
1390
1391         if (!drv->dbgfs_drv) {
1392                 IWL_ERR(drv, "failed to create debugfs directory\n");
1393                 ret = -ENOMEM;
1394                 goto err_free_drv;
1395         }
1396
1397         /* Create transport layer debugfs dir */
1398         drv->trans->dbgfs_dir = debugfs_create_dir("trans", drv->dbgfs_drv);
1399
1400         if (!drv->trans->dbgfs_dir) {
1401                 IWL_ERR(drv, "failed to create transport debugfs directory\n");
1402                 ret = -ENOMEM;
1403                 goto err_free_dbgfs;
1404         }
1405 #endif
1406
1407         ret = iwl_request_firmware(drv, true);
1408         if (ret) {
1409                 IWL_ERR(trans, "Couldn't request the fw\n");
1410                 goto err_fw;
1411         }
1412
1413         return drv;
1414
1415 err_fw:
1416 #ifdef CONFIG_IWLWIFI_DEBUGFS
1417 err_free_dbgfs:
1418         debugfs_remove_recursive(drv->dbgfs_drv);
1419 err_free_drv:
1420 #endif
1421         kfree(drv);
1422 err:
1423         return ERR_PTR(ret);
1424 }
1425
1426 void iwl_drv_stop(struct iwl_drv *drv)
1427 {
1428         wait_for_completion(&drv->request_firmware_complete);
1429
1430         _iwl_op_mode_stop(drv);
1431
1432         iwl_dealloc_ucode(drv);
1433
1434         mutex_lock(&iwlwifi_opmode_table_mtx);
1435         /*
1436          * List is empty (this item wasn't added)
1437          * when firmware loading failed -- in that
1438          * case we can't remove it from any list.
1439          */
1440         if (!list_empty(&drv->list))
1441                 list_del(&drv->list);
1442         mutex_unlock(&iwlwifi_opmode_table_mtx);
1443
1444 #ifdef CONFIG_IWLWIFI_DEBUGFS
1445         debugfs_remove_recursive(drv->dbgfs_drv);
1446 #endif
1447
1448         kfree(drv);
1449 }
1450
1451
1452 /* shared module parameters */
1453 struct iwl_mod_params iwlwifi_mod_params = {
1454         .restart_fw = true,
1455         .bt_coex_active = true,
1456         .power_level = IWL_POWER_INDEX_1,
1457         .d0i3_disable = true,
1458 #ifndef CONFIG_IWLWIFI_UAPSD
1459         .uapsd_disable = true,
1460 #endif /* CONFIG_IWLWIFI_UAPSD */
1461         /* the rest are 0 by default */
1462 };
1463 IWL_EXPORT_SYMBOL(iwlwifi_mod_params);
1464
1465 int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops)
1466 {
1467         int i;
1468         struct iwl_drv *drv;
1469         struct iwlwifi_opmode_table *op;
1470
1471         mutex_lock(&iwlwifi_opmode_table_mtx);
1472         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1473                 op = &iwlwifi_opmode_table[i];
1474                 if (strcmp(op->name, name))
1475                         continue;
1476                 op->ops = ops;
1477                 /* TODO: need to handle exceptional case */
1478                 list_for_each_entry(drv, &op->drv, list)
1479                         drv->op_mode = _iwl_op_mode_start(drv, op);
1480
1481                 mutex_unlock(&iwlwifi_opmode_table_mtx);
1482                 return 0;
1483         }
1484         mutex_unlock(&iwlwifi_opmode_table_mtx);
1485         return -EIO;
1486 }
1487 IWL_EXPORT_SYMBOL(iwl_opmode_register);
1488
1489 void iwl_opmode_deregister(const char *name)
1490 {
1491         int i;
1492         struct iwl_drv *drv;
1493
1494         mutex_lock(&iwlwifi_opmode_table_mtx);
1495         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1496                 if (strcmp(iwlwifi_opmode_table[i].name, name))
1497                         continue;
1498                 iwlwifi_opmode_table[i].ops = NULL;
1499
1500                 /* call the stop routine for all devices */
1501                 list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list)
1502                         _iwl_op_mode_stop(drv);
1503
1504                 mutex_unlock(&iwlwifi_opmode_table_mtx);
1505                 return;
1506         }
1507         mutex_unlock(&iwlwifi_opmode_table_mtx);
1508 }
1509 IWL_EXPORT_SYMBOL(iwl_opmode_deregister);
1510
1511 static int __init iwl_drv_init(void)
1512 {
1513         int i;
1514
1515         mutex_init(&iwlwifi_opmode_table_mtx);
1516
1517         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++)
1518                 INIT_LIST_HEAD(&iwlwifi_opmode_table[i].drv);
1519
1520         pr_info(DRV_DESCRIPTION "\n");
1521         pr_info(DRV_COPYRIGHT "\n");
1522
1523 #ifdef CONFIG_IWLWIFI_DEBUGFS
1524         /* Create the root of iwlwifi debugfs subsystem. */
1525         iwl_dbgfs_root = debugfs_create_dir(DRV_NAME, NULL);
1526
1527         if (!iwl_dbgfs_root)
1528                 return -EFAULT;
1529 #endif
1530
1531         return iwl_pci_register_driver();
1532 }
1533 module_init(iwl_drv_init);
1534
1535 static void __exit iwl_drv_exit(void)
1536 {
1537         iwl_pci_unregister_driver();
1538
1539 #ifdef CONFIG_IWLWIFI_DEBUGFS
1540         debugfs_remove_recursive(iwl_dbgfs_root);
1541 #endif
1542 }
1543 module_exit(iwl_drv_exit);
1544
1545 #ifdef CONFIG_IWLWIFI_DEBUG
1546 module_param_named(debug, iwlwifi_mod_params.debug_level, uint,
1547                    S_IRUGO | S_IWUSR);
1548 MODULE_PARM_DESC(debug, "debug output mask");
1549 #endif
1550
1551 module_param_named(swcrypto, iwlwifi_mod_params.sw_crypto, int, S_IRUGO);
1552 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1553 module_param_named(11n_disable, iwlwifi_mod_params.disable_11n, uint, S_IRUGO);
1554 MODULE_PARM_DESC(11n_disable,
1555         "disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX");
1556 module_param_named(amsdu_size_8K, iwlwifi_mod_params.amsdu_size_8K,
1557                    int, S_IRUGO);
1558 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size (default 0)");
1559 module_param_named(fw_restart, iwlwifi_mod_params.restart_fw, bool, S_IRUGO);
1560 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error (default true)");
1561
1562 module_param_named(antenna_coupling, iwlwifi_mod_params.ant_coupling,
1563                    int, S_IRUGO);
1564 MODULE_PARM_DESC(antenna_coupling,
1565                  "specify antenna coupling in dB (default: 0 dB)");
1566
1567 module_param_named(nvm_file, iwlwifi_mod_params.nvm_file, charp, S_IRUGO);
1568 MODULE_PARM_DESC(nvm_file, "NVM file name");
1569
1570 module_param_named(d0i3_disable, iwlwifi_mod_params.d0i3_disable,
1571                    bool, S_IRUGO);
1572 MODULE_PARM_DESC(d0i3_disable, "disable d0i3 functionality (default: Y)");
1573
1574 module_param_named(lar_disable, iwlwifi_mod_params.lar_disable,
1575                    bool, S_IRUGO);
1576 MODULE_PARM_DESC(lar_disable, "disable LAR functionality (default: N)");
1577
1578 module_param_named(uapsd_disable, iwlwifi_mod_params.uapsd_disable,
1579                    bool, S_IRUGO | S_IWUSR);
1580 #ifdef CONFIG_IWLWIFI_UAPSD
1581 MODULE_PARM_DESC(uapsd_disable, "disable U-APSD functionality (default: N)");
1582 #else
1583 MODULE_PARM_DESC(uapsd_disable, "disable U-APSD functionality (default: Y)");
1584 #endif
1585
1586 /*
1587  * set bt_coex_active to true, uCode will do kill/defer
1588  * every time the priority line is asserted (BT is sending signals on the
1589  * priority line in the PCIx).
1590  * set bt_coex_active to false, uCode will ignore the BT activity and
1591  * perform the normal operation
1592  *
1593  * User might experience transmit issue on some platform due to WiFi/BT
1594  * co-exist problem. The possible behaviors are:
1595  *   Able to scan and finding all the available AP
1596  *   Not able to associate with any AP
1597  * On those platforms, WiFi communication can be restored by set
1598  * "bt_coex_active" module parameter to "false"
1599  *
1600  * default: bt_coex_active = true (BT_COEX_ENABLE)
1601  */
1602 module_param_named(bt_coex_active, iwlwifi_mod_params.bt_coex_active,
1603                 bool, S_IRUGO);
1604 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1605
1606 module_param_named(led_mode, iwlwifi_mod_params.led_mode, int, S_IRUGO);
1607 MODULE_PARM_DESC(led_mode, "0=system default, "
1608                 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1609
1610 module_param_named(power_save, iwlwifi_mod_params.power_save,
1611                 bool, S_IRUGO);
1612 MODULE_PARM_DESC(power_save,
1613                  "enable WiFi power management (default: disable)");
1614
1615 module_param_named(power_level, iwlwifi_mod_params.power_level,
1616                 int, S_IRUGO);
1617 MODULE_PARM_DESC(power_level,
1618                  "default power save level (range from 1 - 5, default: 1)");
1619
1620 module_param_named(fw_monitor, iwlwifi_mod_params.fw_monitor, bool, S_IRUGO);
1621 MODULE_PARM_DESC(fw_monitor,
1622                  "firmware monitor - to debug FW (default: false - needs lots of memory)");