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 - 2015 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 - 2015 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         u32 api_flags = le32_to_cpu(ucode_api->api_flags);
 427         int i;
 428
 429         if (api_index >= IWL_API_MAX_BITS / 32) {
 430                 IWL_ERR(drv, "api_index larger than supported by driver\n");
 431                 /* don't return an error so we can load FW that has more bits */
 432                 return 0;
 433         }
 434
 435         for (i = 0; i < 32; i++) {
 436                 if (api_flags & BIT(i))
 437                         __set_bit(i + 32 * api_index, capa->_api);
 438         }
 439
 440         return 0;
 441 }
 442
 443 static int iwl_set_ucode_capabilities(struct iwl_drv *drv, const u8 *data,
 444                                       struct iwl_ucode_capabilities *capa)
 445 {
 446         const struct iwl_ucode_capa *ucode_capa = (void *)data;
 447         u32 api_index = le32_to_cpu(ucode_capa->api_index);
 448         u32 api_flags = le32_to_cpu(ucode_capa->api_capa);
 449         int i;
 450
 451         if (api_index >= IWL_CAPABILITIES_MAX_BITS / 32) {
 452                 IWL_ERR(drv, "api_index larger than supported by driver\n");
 453                 /* don't return an error so we can load FW that has more bits */
 454                 return 0;
 455         }
 456
 457         for (i = 0; i < 32; i++) {
 458                 if (api_flags & BIT(i))
 459                         __set_bit(i + 32 * api_index, capa->_capa);
 460         }
 461
 462         return 0;
 463 }
 464
 465 static int iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
 466                                     const struct firmware *ucode_raw,
 467                                     struct iwl_firmware_pieces *pieces)
 468 {
 469         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
 470         u32 api_ver, hdr_size, build;
 471         char buildstr[25];
 472         const u8 *src;
 473
 474         drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
 475         api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
 476
 477         switch (api_ver) {
 478         default:
 479                 hdr_size = 28;
 480                 if (ucode_raw->size < hdr_size) {
 481                         IWL_ERR(drv, "File size too small!\n");
 482                         return -EINVAL;
 483                 }
 484                 build = le32_to_cpu(ucode->u.v2.build);
 485                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 486                              le32_to_cpu(ucode->u.v2.inst_size));
 487                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 488                              le32_to_cpu(ucode->u.v2.data_size));
 489                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 490                              le32_to_cpu(ucode->u.v2.init_size));
 491                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 492                              le32_to_cpu(ucode->u.v2.init_data_size));
 493                 src = ucode->u.v2.data;
 494                 break;
 495         case 0:
 496         case 1:
 497         case 2:
 498                 hdr_size = 24;
 499                 if (ucode_raw->size < hdr_size) {
 500                         IWL_ERR(drv, "File size too small!\n");
 501                         return -EINVAL;
 502                 }
 503                 build = 0;
 504                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 505                              le32_to_cpu(ucode->u.v1.inst_size));
 506                 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 507                              le32_to_cpu(ucode->u.v1.data_size));
 508                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 509                              le32_to_cpu(ucode->u.v1.init_size));
 510                 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 511                              le32_to_cpu(ucode->u.v1.init_data_size));
 512                 src = ucode->u.v1.data;
 513                 break;
 514         }
 515
 516         if (build)
 517                 sprintf(buildstr, " build %u%s", build,
 518                        (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 519                                 ? " (EXP)" : "");
 520         else
 521                 buildstr[0] = '\0';
 522
 523         snprintf(drv->fw.fw_version,
 524                  sizeof(drv->fw.fw_version),
 525                  "%u.%u.%u.%u%s",
 526                  IWL_UCODE_MAJOR(drv->fw.ucode_ver),
 527                  IWL_UCODE_MINOR(drv->fw.ucode_ver),
 528                  IWL_UCODE_API(drv->fw.ucode_ver),
 529                  IWL_UCODE_SERIAL(drv->fw.ucode_ver),
 530                  buildstr);
 531
 532         /* Verify size of file vs. image size info in file's header */
 533
 534         if (ucode_raw->size != hdr_size +
 535             get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) +
 536             get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) +
 537             get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) +
 538             get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)) {
 539
 540                 IWL_ERR(drv,
 541                         "uCode file size %d does not match expected size\n",
 542                         (int)ucode_raw->size);
 543                 return -EINVAL;
 544         }
 545
 546
 547         set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, src);
 548         src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST);
 549         set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
 550                        IWLAGN_RTC_INST_LOWER_BOUND);
 551         set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, src);
 552         src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA);
 553         set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
 554                        IWLAGN_RTC_DATA_LOWER_BOUND);
 555         set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, src);
 556         src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST);
 557         set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
 558                        IWLAGN_RTC_INST_LOWER_BOUND);
 559         set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, src);
 560         src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA);
 561         set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
 562                        IWLAGN_RTC_DATA_LOWER_BOUND);
 563         return 0;
 564 }
 565
 566 static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
 567                                 const struct firmware *ucode_raw,
 568                                 struct iwl_firmware_pieces *pieces,
 569                                 struct iwl_ucode_capabilities *capa)
 570 {
 571         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
 572         struct iwl_ucode_tlv *tlv;
 573         size_t len = ucode_raw->size;
 574         const u8 *data;
 575         u32 tlv_len;
 576         enum iwl_ucode_tlv_type tlv_type;
 577         const u8 *tlv_data;
 578         char buildstr[25];
 579         u32 build;
 580         int num_of_cpus;
 581         bool usniffer_images = false;
 582         bool usniffer_req = false;
 583
 584         if (len < sizeof(*ucode)) {
 585                 IWL_ERR(drv, "uCode has invalid length: %zd\n", len);
 586                 return -EINVAL;
 587         }
 588
 589         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
 590                 IWL_ERR(drv, "invalid uCode magic: 0X%x\n",
 591                         le32_to_cpu(ucode->magic));
 592                 return -EINVAL;
 593         }
 594
 595         drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
 596         memcpy(drv->fw.human_readable, ucode->human_readable,
 597                sizeof(drv->fw.human_readable));
 598         build = le32_to_cpu(ucode->build);
 599
 600         if (build)
 601                 sprintf(buildstr, " build %u%s", build,
 602                        (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 603                                 ? " (EXP)" : "");
 604         else
 605                 buildstr[0] = '\0';
 606
 607         snprintf(drv->fw.fw_version,
 608                  sizeof(drv->fw.fw_version),
 609                  "%u.%u.%u.%u%s",
 610                  IWL_UCODE_MAJOR(drv->fw.ucode_ver),
 611                  IWL_UCODE_MINOR(drv->fw.ucode_ver),
 612                  IWL_UCODE_API(drv->fw.ucode_ver),
 613                  IWL_UCODE_SERIAL(drv->fw.ucode_ver),
 614                  buildstr);
 615
 616         data = ucode->data;
 617
 618         len -= sizeof(*ucode);
 619
 620         while (len >= sizeof(*tlv)) {
 621                 len -= sizeof(*tlv);
 622                 tlv = (void *)data;
 623
 624                 tlv_len = le32_to_cpu(tlv->length);
 625                 tlv_type = le32_to_cpu(tlv->type);
 626                 tlv_data = tlv->data;
 627
 628                 if (len < tlv_len) {
 629                         IWL_ERR(drv, "invalid TLV len: %zd/%u\n",
 630                                 len, tlv_len);
 631                         return -EINVAL;
 632                 }
 633                 len -= ALIGN(tlv_len, 4);
 634                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
 635
 636                 switch (tlv_type) {
 637                 case IWL_UCODE_TLV_INST:
 638                         set_sec_data(pieces, IWL_UCODE_REGULAR,
 639                                      IWL_UCODE_SECTION_INST, tlv_data);
 640                         set_sec_size(pieces, IWL_UCODE_REGULAR,
 641                                      IWL_UCODE_SECTION_INST, tlv_len);
 642                         set_sec_offset(pieces, IWL_UCODE_REGULAR,
 643                                        IWL_UCODE_SECTION_INST,
 644                                        IWLAGN_RTC_INST_LOWER_BOUND);
 645                         break;
 646                 case IWL_UCODE_TLV_DATA:
 647                         set_sec_data(pieces, IWL_UCODE_REGULAR,
 648                                      IWL_UCODE_SECTION_DATA, tlv_data);
 649                         set_sec_size(pieces, IWL_UCODE_REGULAR,
 650                                      IWL_UCODE_SECTION_DATA, tlv_len);
 651                         set_sec_offset(pieces, IWL_UCODE_REGULAR,
 652                                        IWL_UCODE_SECTION_DATA,
 653                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 654                         break;
 655                 case IWL_UCODE_TLV_INIT:
 656                         set_sec_data(pieces, IWL_UCODE_INIT,
 657                                      IWL_UCODE_SECTION_INST, tlv_data);
 658                         set_sec_size(pieces, IWL_UCODE_INIT,
 659                                      IWL_UCODE_SECTION_INST, tlv_len);
 660                         set_sec_offset(pieces, IWL_UCODE_INIT,
 661                                        IWL_UCODE_SECTION_INST,
 662                                        IWLAGN_RTC_INST_LOWER_BOUND);
 663                         break;
 664                 case IWL_UCODE_TLV_INIT_DATA:
 665                         set_sec_data(pieces, IWL_UCODE_INIT,
 666                                      IWL_UCODE_SECTION_DATA, tlv_data);
 667                         set_sec_size(pieces, IWL_UCODE_INIT,
 668                                      IWL_UCODE_SECTION_DATA, tlv_len);
 669                         set_sec_offset(pieces, IWL_UCODE_INIT,
 670                                        IWL_UCODE_SECTION_DATA,
 671                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 672                         break;
 673                 case IWL_UCODE_TLV_BOOT:
 674                         IWL_ERR(drv, "Found unexpected BOOT ucode\n");
 675                         break;
 676                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
 677                         if (tlv_len != sizeof(u32))
 678                                 goto invalid_tlv_len;
 679                         capa->max_probe_length =
 680                                         le32_to_cpup((__le32 *)tlv_data);
 681                         break;
 682                 case IWL_UCODE_TLV_PAN:
 683                         if (tlv_len)
 684                                 goto invalid_tlv_len;
 685                         capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
 686                         break;
 687                 case IWL_UCODE_TLV_FLAGS:
 688                         /* must be at least one u32 */
 689                         if (tlv_len < sizeof(u32))
 690                                 goto invalid_tlv_len;
 691                         /* and a proper number of u32s */
 692                         if (tlv_len % sizeof(u32))
 693                                 goto invalid_tlv_len;
 694                         /*
 695                          * This driver only reads the first u32 as
 696                          * right now no more features are defined,
 697                          * if that changes then either the driver
 698                          * will not work with the new firmware, or
 699                          * it'll not take advantage of new features.
 700                          */
 701                         capa->flags = le32_to_cpup((__le32 *)tlv_data);
 702                         break;
 703                 case IWL_UCODE_TLV_API_CHANGES_SET:
 704                         if (tlv_len != sizeof(struct iwl_ucode_api))
 705                                 goto invalid_tlv_len;
 706                         if (iwl_set_ucode_api_flags(drv, tlv_data, capa))
 707                                 goto tlv_error;
 708                         break;
 709                 case IWL_UCODE_TLV_ENABLED_CAPABILITIES:
 710                         if (tlv_len != sizeof(struct iwl_ucode_capa))
 711                                 goto invalid_tlv_len;
 712                         if (iwl_set_ucode_capabilities(drv, tlv_data, capa))
 713                                 goto tlv_error;
 714                         break;
 715                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
 716                         if (tlv_len != sizeof(u32))
 717                                 goto invalid_tlv_len;
 718                         pieces->init_evtlog_ptr =
 719                                         le32_to_cpup((__le32 *)tlv_data);
 720                         break;
 721                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
 722                         if (tlv_len != sizeof(u32))
 723                                 goto invalid_tlv_len;
 724                         pieces->init_evtlog_size =
 725                                         le32_to_cpup((__le32 *)tlv_data);
 726                         break;
 727                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
 728                         if (tlv_len != sizeof(u32))
 729                                 goto invalid_tlv_len;
 730                         pieces->init_errlog_ptr =
 731                                         le32_to_cpup((__le32 *)tlv_data);
 732                         break;
 733                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
 734                         if (tlv_len != sizeof(u32))
 735                                 goto invalid_tlv_len;
 736                         pieces->inst_evtlog_ptr =
 737                                         le32_to_cpup((__le32 *)tlv_data);
 738                         break;
 739                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
 740                         if (tlv_len != sizeof(u32))
 741                                 goto invalid_tlv_len;
 742                         pieces->inst_evtlog_size =
 743                                         le32_to_cpup((__le32 *)tlv_data);
 744                         break;
 745                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
 746                         if (tlv_len != sizeof(u32))
 747                                 goto invalid_tlv_len;
 748                         pieces->inst_errlog_ptr =
 749                                         le32_to_cpup((__le32 *)tlv_data);
 750                         break;
 751                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
 752                         if (tlv_len)
 753                                 goto invalid_tlv_len;
 754                         drv->fw.enhance_sensitivity_table = true;
 755                         break;
 756                 case IWL_UCODE_TLV_WOWLAN_INST:
 757                         set_sec_data(pieces, IWL_UCODE_WOWLAN,
 758                                      IWL_UCODE_SECTION_INST, tlv_data);
 759                         set_sec_size(pieces, IWL_UCODE_WOWLAN,
 760                                      IWL_UCODE_SECTION_INST, tlv_len);
 761                         set_sec_offset(pieces, IWL_UCODE_WOWLAN,
 762                                        IWL_UCODE_SECTION_INST,
 763                                        IWLAGN_RTC_INST_LOWER_BOUND);
 764                         break;
 765                 case IWL_UCODE_TLV_WOWLAN_DATA:
 766                         set_sec_data(pieces, IWL_UCODE_WOWLAN,
 767                                      IWL_UCODE_SECTION_DATA, tlv_data);
 768                         set_sec_size(pieces, IWL_UCODE_WOWLAN,
 769                                      IWL_UCODE_SECTION_DATA, tlv_len);
 770                         set_sec_offset(pieces, IWL_UCODE_WOWLAN,
 771                                        IWL_UCODE_SECTION_DATA,
 772                                        IWLAGN_RTC_DATA_LOWER_BOUND);
 773                         break;
 774                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
 775                         if (tlv_len != sizeof(u32))
 776                                 goto invalid_tlv_len;
 777                         capa->standard_phy_calibration_size =
 778                                         le32_to_cpup((__le32 *)tlv_data);
 779                         break;
 780                  case IWL_UCODE_TLV_SEC_RT:
 781                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
 782                                             tlv_len);
 783                         drv->fw.mvm_fw = true;
 784                         break;
 785                 case IWL_UCODE_TLV_SEC_INIT:
 786                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
 787                                             tlv_len);
 788                         drv->fw.mvm_fw = true;
 789                         break;
 790                 case IWL_UCODE_TLV_SEC_WOWLAN:
 791                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
 792                                             tlv_len);
 793                         drv->fw.mvm_fw = true;
 794                         break;
 795                 case IWL_UCODE_TLV_DEF_CALIB:
 796                         if (tlv_len != sizeof(struct iwl_tlv_calib_data))
 797                                 goto invalid_tlv_len;
 798                         if (iwl_set_default_calib(drv, tlv_data))
 799                                 goto tlv_error;
 800                         break;
 801                 case IWL_UCODE_TLV_PHY_SKU:
 802                         if (tlv_len != sizeof(u32))
 803                                 goto invalid_tlv_len;
 804                         drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data);
 805                         drv->fw.valid_tx_ant = (drv->fw.phy_config &
 806                                                 FW_PHY_CFG_TX_CHAIN) >>
 807                                                 FW_PHY_CFG_TX_CHAIN_POS;
 808                         drv->fw.valid_rx_ant = (drv->fw.phy_config &
 809                                                 FW_PHY_CFG_RX_CHAIN) >>
 810                                                 FW_PHY_CFG_RX_CHAIN_POS;
 811                         break;
 812                  case IWL_UCODE_TLV_SECURE_SEC_RT:
 813                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
 814                                             tlv_len);
 815                         drv->fw.mvm_fw = true;
 816                         break;
 817                 case IWL_UCODE_TLV_SECURE_SEC_INIT:
 818                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
 819                                             tlv_len);
 820                         drv->fw.mvm_fw = true;
 821                         break;
 822                 case IWL_UCODE_TLV_SECURE_SEC_WOWLAN:
 823                         iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
 824                                             tlv_len);
 825                         drv->fw.mvm_fw = true;
 826                         break;
 827                 case IWL_UCODE_TLV_NUM_OF_CPU:
 828                         if (tlv_len != sizeof(u32))
 829                                 goto invalid_tlv_len;
 830                         num_of_cpus =
 831                                 le32_to_cpup((__le32 *)tlv_data);
 832
 833                         if (num_of_cpus == 2) {
 834                                 drv->fw.img[IWL_UCODE_REGULAR].is_dual_cpus =
 835                                         true;
 836                                 drv->fw.img[IWL_UCODE_INIT].is_dual_cpus =
 837                                         true;
 838                                 drv->fw.img[IWL_UCODE_WOWLAN].is_dual_cpus =
 839                                         true;
 840                         } else if ((num_of_cpus > 2) || (num_of_cpus < 1)) {
 841                                 IWL_ERR(drv, "Driver support upto 2 CPUs\n");
 842                                 return -EINVAL;
 843                         }
 844                         break;
 845                 case IWL_UCODE_TLV_CSCHEME:
 846                         if (iwl_store_cscheme(&drv->fw, tlv_data, tlv_len))
 847                                 goto invalid_tlv_len;
 848                         break;
 849                 case IWL_UCODE_TLV_N_SCAN_CHANNELS:
 850                         if (tlv_len != sizeof(u32))
 851                                 goto invalid_tlv_len;
 852                         capa->n_scan_channels =
 853                                 le32_to_cpup((__le32 *)tlv_data);
 854                         break;
 855                 case IWL_UCODE_TLV_FW_VERSION: {
 856                         __le32 *ptr = (void *)tlv_data;
 857                         u32 major, minor;
 858                         u8 local_comp;
 859
 860                         if (tlv_len != sizeof(u32) * 3)
 861                                 goto invalid_tlv_len;
 862
 863                         major = le32_to_cpup(ptr++);
 864                         minor = le32_to_cpup(ptr++);
 865                         local_comp = le32_to_cpup(ptr);
 866
 867                         snprintf(drv->fw.fw_version,
 868                                  sizeof(drv->fw.fw_version), "%u.%u.%u",
 869                                  major, minor, local_comp);
 870                         break;
 871                         }
 872                 case IWL_UCODE_TLV_FW_DBG_DEST: {
 873                         struct iwl_fw_dbg_dest_tlv *dest = (void *)tlv_data;
 874
 875                         if (pieces->dbg_dest_tlv) {
 876                                 IWL_ERR(drv,
 877                                         "dbg destination ignored, already exists\n");
 878                                 break;
 879                         }
 880
 881                         pieces->dbg_dest_tlv = dest;
 882                         IWL_INFO(drv, "Found debug destination: %s\n",
 883                                  get_fw_dbg_mode_string(dest->monitor_mode));
 884
 885                         drv->fw.dbg_dest_reg_num =
 886                                 tlv_len - offsetof(struct iwl_fw_dbg_dest_tlv,
 887                                                    reg_ops);
 888                         drv->fw.dbg_dest_reg_num /=
 889                                 sizeof(drv->fw.dbg_dest_tlv->reg_ops[0]);
 890
 891                         break;
 892                         }
 893                 case IWL_UCODE_TLV_FW_DBG_CONF: {
 894                         struct iwl_fw_dbg_conf_tlv *conf = (void *)tlv_data;
 895
 896                         if (!pieces->dbg_dest_tlv) {
 897                                 IWL_ERR(drv,
 898                                         "Ignore dbg config %d - no destination configured\n",
 899                                         conf->id);
 900                                 break;
 901                         }
 902
 903                         if (conf->id >= ARRAY_SIZE(drv->fw.dbg_conf_tlv)) {
 904                                 IWL_ERR(drv,
 905                                         "Skip unknown configuration: %d\n",
 906                                         conf->id);
 907                                 break;
 908                         }
 909
 910                         if (pieces->dbg_conf_tlv[conf->id]) {
 911                                 IWL_ERR(drv,
 912                                         "Ignore duplicate dbg config %d\n",
 913                                         conf->id);
 914                                 break;
 915                         }
 916
 917                         if (conf->usniffer)
 918                                 usniffer_req = true;
 919
 920                         IWL_INFO(drv, "Found debug configuration: %d\n",
 921                                  conf->id);
 922
 923                         pieces->dbg_conf_tlv[conf->id] = conf;
 924                         pieces->dbg_conf_tlv_len[conf->id] = tlv_len;
 925                         break;
 926                         }
 927                 case IWL_UCODE_TLV_FW_DBG_TRIGGER: {
 928                         struct iwl_fw_dbg_trigger_tlv *trigger =
 929                                 (void *)tlv_data;
 930                         u32 trigger_id = le32_to_cpu(trigger->id);
 931
 932                         if (trigger_id >= ARRAY_SIZE(drv->fw.dbg_trigger_tlv)) {
 933                                 IWL_ERR(drv,
 934                                         "Skip unknown trigger: %u\n",
 935                                         trigger->id);
 936                                 break;
 937                         }
 938
 939                         if (pieces->dbg_trigger_tlv[trigger_id]) {
 940                                 IWL_ERR(drv,
 941                                         "Ignore duplicate dbg trigger %u\n",
 942                                         trigger->id);
 943                                 break;
 944                         }
 945
 946                         IWL_INFO(drv, "Found debug trigger: %u\n", trigger->id);
 947
 948                         pieces->dbg_trigger_tlv[trigger_id] = trigger;
 949                         pieces->dbg_trigger_tlv_len[trigger_id] = tlv_len;
 950                         break;
 951                         }
 952                 case IWL_UCODE_TLV_SEC_RT_USNIFFER:
 953                         usniffer_images = true;
 954                         iwl_store_ucode_sec(pieces, tlv_data,
 955                                             IWL_UCODE_REGULAR_USNIFFER,
 956                                             tlv_len);
 957                         break;
 958                 case IWL_UCODE_TLV_SDIO_ADMA_ADDR:
 959                         if (tlv_len != sizeof(u32))
 960                                 goto invalid_tlv_len;
 961                         drv->fw.sdio_adma_addr =
 962                                 le32_to_cpup((__le32 *)tlv_data);
 963                         break;
 964                 default:
 965                         IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
 966                         break;
 967                 }
 968         }
 969
 970         if (usniffer_req && !usniffer_images) {
 971                 IWL_ERR(drv,
 972                         "user selected to work with usniffer but usniffer image isn't available in ucode package\n");
 973                 return -EINVAL;
 974         }
 975
 976         if (len) {
 977                 IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
 978                 iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len);
 979                 return -EINVAL;
 980         }
 981
 982         return 0;
 983
 984  invalid_tlv_len:
 985         IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
 986  tlv_error:
 987         iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);
 988
 989         return -EINVAL;
 990 }
 991
 992 static int iwl_alloc_ucode(struct iwl_drv *drv,
 993                            struct iwl_firmware_pieces *pieces,
 994                            enum iwl_ucode_type type)
 995 {
 996         int i;
 997         for (i = 0;
 998              i < IWL_UCODE_SECTION_MAX && get_sec_size(pieces, type, i);
 999              i++)
1000                 if (iwl_alloc_fw_desc(drv, &(drv->fw.img[type].sec[i]),
1001                                       get_sec(pieces, type, i)))
1002                         return -ENOMEM;
1003         return 0;
1004 }
1005
1006 static int validate_sec_sizes(struct iwl_drv *drv,
1007                               struct iwl_firmware_pieces *pieces,
1008                               const struct iwl_cfg *cfg)
1009 {
1010         IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %Zd\n",
1011                 get_sec_size(pieces, IWL_UCODE_REGULAR,
1012                              IWL_UCODE_SECTION_INST));
1013         IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %Zd\n",
1014                 get_sec_size(pieces, IWL_UCODE_REGULAR,
1015                              IWL_UCODE_SECTION_DATA));
1016         IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %Zd\n",
1017                 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST));
1018         IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %Zd\n",
1019                 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA));
1020
1021         /* Verify that uCode images will fit in card's SRAM. */
1022         if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
1023             cfg->max_inst_size) {
1024                 IWL_ERR(drv, "uCode instr len %Zd too large to fit in\n",
1025                         get_sec_size(pieces, IWL_UCODE_REGULAR,
1026                                      IWL_UCODE_SECTION_INST));
1027                 return -1;
1028         }
1029
1030         if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
1031             cfg->max_data_size) {
1032                 IWL_ERR(drv, "uCode data len %Zd too large to fit in\n",
1033                         get_sec_size(pieces, IWL_UCODE_REGULAR,
1034                                      IWL_UCODE_SECTION_DATA));
1035                 return -1;
1036         }
1037
1038         if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) >
1039              cfg->max_inst_size) {
1040                 IWL_ERR(drv, "uCode init instr len %Zd too large to fit in\n",
1041                         get_sec_size(pieces, IWL_UCODE_INIT,
1042                                      IWL_UCODE_SECTION_INST));
1043                 return -1;
1044         }
1045
1046         if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA) >
1047             cfg->max_data_size) {
1048                 IWL_ERR(drv, "uCode init data len %Zd too large to fit in\n",
1049                         get_sec_size(pieces, IWL_UCODE_REGULAR,
1050                                      IWL_UCODE_SECTION_DATA));
1051                 return -1;
1052         }
1053         return 0;
1054 }
1055
1056 static struct iwl_op_mode *
1057 _iwl_op_mode_start(struct iwl_drv *drv, struct iwlwifi_opmode_table *op)
1058 {
1059         const struct iwl_op_mode_ops *ops = op->ops;
1060         struct dentry *dbgfs_dir = NULL;
1061         struct iwl_op_mode *op_mode = NULL;
1062
1063 #ifdef CONFIG_IWLWIFI_DEBUGFS
1064         drv->dbgfs_op_mode = debugfs_create_dir(op->name,
1065                                                 drv->dbgfs_drv);
1066         if (!drv->dbgfs_op_mode) {
1067                 IWL_ERR(drv,
1068                         "failed to create opmode debugfs directory\n");
1069                 return op_mode;
1070         }
1071         dbgfs_dir = drv->dbgfs_op_mode;
1072 #endif
1073
1074         op_mode = ops->start(drv->trans, drv->cfg, &drv->fw, dbgfs_dir);
1075
1076 #ifdef CONFIG_IWLWIFI_DEBUGFS
1077         if (!op_mode) {
1078                 debugfs_remove_recursive(drv->dbgfs_op_mode);
1079                 drv->dbgfs_op_mode = NULL;
1080         }
1081 #endif
1082
1083         return op_mode;
1084 }
1085
1086 static void _iwl_op_mode_stop(struct iwl_drv *drv)
1087 {
1088         /* op_mode can be NULL if its start failed */
1089         if (drv->op_mode) {
1090                 iwl_op_mode_stop(drv->op_mode);
1091                 drv->op_mode = NULL;
1092
1093 #ifdef CONFIG_IWLWIFI_DEBUGFS
1094                 debugfs_remove_recursive(drv->dbgfs_op_mode);
1095                 drv->dbgfs_op_mode = NULL;
1096 #endif
1097         }
1098 }
1099
1100 /**
1101  * iwl_req_fw_callback - callback when firmware was loaded
1102  *
1103  * If loaded successfully, copies the firmware into buffers
1104  * for the card to fetch (via DMA).
1105  */
1106 static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
1107 {
1108         struct iwl_drv *drv = context;
1109         struct iwl_fw *fw = &drv->fw;
1110         struct iwl_ucode_header *ucode;
1111         struct iwlwifi_opmode_table *op;
1112         int err;
1113         struct iwl_firmware_pieces *pieces;
1114         const unsigned int api_max = drv->cfg->ucode_api_max;
1115         unsigned int api_ok = drv->cfg->ucode_api_ok;
1116         const unsigned int api_min = drv->cfg->ucode_api_min;
1117         size_t trigger_tlv_sz[FW_DBG_TRIGGER_MAX];
1118         u32 api_ver;
1119         int i;
1120         bool load_module = false;
1121
1122         fw->ucode_capa.max_probe_length = IWL_DEFAULT_MAX_PROBE_LENGTH;
1123         fw->ucode_capa.standard_phy_calibration_size =
1124                         IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1125         fw->ucode_capa.n_scan_channels = IWL_DEFAULT_SCAN_CHANNELS;
1126
1127         if (!api_ok)
1128                 api_ok = api_max;
1129
1130         pieces = kzalloc(sizeof(*pieces), GFP_KERNEL);
1131         if (!pieces)
1132                 return;
1133
1134         if (!ucode_raw) {
1135                 if (drv->fw_index <= api_ok)
1136                         IWL_ERR(drv,
1137                                 "request for firmware file '%s' failed.\n",
1138                                 drv->firmware_name);
1139                 goto try_again;
1140         }
1141
1142         IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
1143                        drv->firmware_name, ucode_raw->size);
1144
1145         /* Make sure that we got at least the API version number */
1146         if (ucode_raw->size < 4) {
1147                 IWL_ERR(drv, "File size way too small!\n");
1148                 goto try_again;
1149         }
1150
1151         /* Data from ucode file:  header followed by uCode images */
1152         ucode = (struct iwl_ucode_header *)ucode_raw->data;
1153
1154         if (ucode->ver)
1155                 err = iwl_parse_v1_v2_firmware(drv, ucode_raw, pieces);
1156         else
1157                 err = iwl_parse_tlv_firmware(drv, ucode_raw, pieces,
1158                                              &fw->ucode_capa);
1159
1160         if (err)
1161                 goto try_again;
1162
1163         if (fw_has_api(&drv->fw.ucode_capa, IWL_UCODE_TLV_API_NEW_VERSION))
1164                 api_ver = drv->fw.ucode_ver;
1165         else
1166                 api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
1167
1168         /*
1169          * api_ver should match the api version forming part of the
1170          * firmware filename ... but we don't check for that and only rely
1171          * on the API version read from firmware header from here on forward
1172          */
1173         /* no api version check required for experimental uCode */
1174         if (drv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1175                 if (api_ver < api_min || api_ver > api_max) {
1176                         IWL_ERR(drv,
1177                                 "Driver unable to support your firmware API. "
1178                                 "Driver supports v%u, firmware is v%u.\n",
1179                                 api_max, api_ver);
1180                         goto try_again;
1181                 }
1182
1183                 if (api_ver < api_ok) {
1184                         if (api_ok != api_max)
1185                                 IWL_ERR(drv, "Firmware has old API version, "
1186                                         "expected v%u through v%u, got v%u.\n",
1187                                         api_ok, api_max, api_ver);
1188                         else
1189                                 IWL_ERR(drv, "Firmware has old API version, "
1190                                         "expected v%u, got v%u.\n",
1191                                         api_max, api_ver);
1192                         IWL_ERR(drv, "New firmware can be obtained from "
1193                                       "http://www.intellinuxwireless.org/.\n");
1194                 }
1195         }
1196
1197         /*
1198          * In mvm uCode there is no difference between data and instructions
1199          * sections.
1200          */
1201         if (!fw->mvm_fw && validate_sec_sizes(drv, pieces, drv->cfg))
1202                 goto try_again;
1203
1204         /* Allocate ucode buffers for card's bus-master loading ... */
1205
1206         /* Runtime instructions and 2 copies of data:
1207          * 1) unmodified from disk
1208          * 2) backup cache for save/restore during power-downs */
1209         for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
1210                 if (iwl_alloc_ucode(drv, pieces, i))
1211                         goto out_free_fw;
1212
1213         if (pieces->dbg_dest_tlv) {
1214                 drv->fw.dbg_dest_tlv =
1215                         kmemdup(pieces->dbg_dest_tlv,
1216                                 sizeof(*pieces->dbg_dest_tlv) +
1217                                 sizeof(pieces->dbg_dest_tlv->reg_ops[0]) *
1218                                 drv->fw.dbg_dest_reg_num, GFP_KERNEL);
1219
1220                 if (!drv->fw.dbg_dest_tlv)
1221                         goto out_free_fw;
1222         }
1223
1224         for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_conf_tlv); i++) {
1225                 if (pieces->dbg_conf_tlv[i]) {
1226                         drv->fw.dbg_conf_tlv_len[i] =
1227                                 pieces->dbg_conf_tlv_len[i];
1228                         drv->fw.dbg_conf_tlv[i] =
1229                                 kmemdup(pieces->dbg_conf_tlv[i],
1230                                         drv->fw.dbg_conf_tlv_len[i],
1231                                         GFP_KERNEL);
1232                         if (!drv->fw.dbg_conf_tlv[i])
1233                                 goto out_free_fw;
1234                 }
1235         }
1236
1237         memset(&trigger_tlv_sz, 0xff, sizeof(trigger_tlv_sz));
1238
1239         trigger_tlv_sz[FW_DBG_TRIGGER_MISSED_BEACONS] =
1240                 sizeof(struct iwl_fw_dbg_trigger_missed_bcon);
1241         trigger_tlv_sz[FW_DBG_TRIGGER_CHANNEL_SWITCH] = 0;
1242         trigger_tlv_sz[FW_DBG_TRIGGER_FW_NOTIF] =
1243                 sizeof(struct iwl_fw_dbg_trigger_cmd);
1244         trigger_tlv_sz[FW_DBG_TRIGGER_MLME] =
1245                 sizeof(struct iwl_fw_dbg_trigger_mlme);
1246         trigger_tlv_sz[FW_DBG_TRIGGER_STATS] =
1247                 sizeof(struct iwl_fw_dbg_trigger_stats);
1248         trigger_tlv_sz[FW_DBG_TRIGGER_RSSI] =
1249                 sizeof(struct iwl_fw_dbg_trigger_low_rssi);
1250         trigger_tlv_sz[FW_DBG_TRIGGER_TXQ_TIMERS] =
1251                 sizeof(struct iwl_fw_dbg_trigger_txq_timer);
1252         trigger_tlv_sz[FW_DBG_TRIGGER_TIME_EVENT] =
1253                 sizeof(struct iwl_fw_dbg_trigger_time_event);
1254         trigger_tlv_sz[FW_DBG_TRIGGER_BA] =
1255                 sizeof(struct iwl_fw_dbg_trigger_ba);
1256
1257         for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_trigger_tlv); i++) {
1258                 if (pieces->dbg_trigger_tlv[i]) {
1259                         /*
1260                          * If the trigger isn't long enough, WARN and exit.
1261                          * Someone is trying to debug something and he won't
1262                          * be able to catch the bug he is trying to chase.
1263                          * We'd better be noisy to be sure he knows what's
1264                          * going on.
1265                          */
1266                         if (WARN_ON(pieces->dbg_trigger_tlv_len[i] <
1267                                     (trigger_tlv_sz[i] +
1268                                      sizeof(struct iwl_fw_dbg_trigger_tlv))))
1269                                 goto out_free_fw;
1270                         drv->fw.dbg_trigger_tlv_len[i] =
1271                                 pieces->dbg_trigger_tlv_len[i];
1272                         drv->fw.dbg_trigger_tlv[i] =
1273                                 kmemdup(pieces->dbg_trigger_tlv[i],
1274                                         drv->fw.dbg_trigger_tlv_len[i],
1275                                         GFP_KERNEL);
1276                         if (!drv->fw.dbg_trigger_tlv[i])
1277                                 goto out_free_fw;
1278                 }
1279         }
1280
1281         /* Now that we can no longer fail, copy information */
1282
1283         /*
1284          * The (size - 16) / 12 formula is based on the information recorded
1285          * for each event, which is of mode 1 (including timestamp) for all
1286          * new microcodes that include this information.
1287          */
1288         fw->init_evtlog_ptr = pieces->init_evtlog_ptr;
1289         if (pieces->init_evtlog_size)
1290                 fw->init_evtlog_size = (pieces->init_evtlog_size - 16)/12;
1291         else
1292                 fw->init_evtlog_size =
1293                         drv->cfg->base_params->max_event_log_size;
1294         fw->init_errlog_ptr = pieces->init_errlog_ptr;
1295         fw->inst_evtlog_ptr = pieces->inst_evtlog_ptr;
1296         if (pieces->inst_evtlog_size)
1297                 fw->inst_evtlog_size = (pieces->inst_evtlog_size - 16)/12;
1298         else
1299                 fw->inst_evtlog_size =
1300                         drv->cfg->base_params->max_event_log_size;
1301         fw->inst_errlog_ptr = pieces->inst_errlog_ptr;
1302
1303         /*
1304          * figure out the offset of chain noise reset and gain commands
1305          * base on the size of standard phy calibration commands table size
1306          */
1307         if (fw->ucode_capa.standard_phy_calibration_size >
1308             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1309                 fw->ucode_capa.standard_phy_calibration_size =
1310                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1311
1312         /* We have our copies now, allow OS release its copies */
1313         release_firmware(ucode_raw);
1314
1315         mutex_lock(&iwlwifi_opmode_table_mtx);
1316         if (fw->mvm_fw)
1317                 op = &iwlwifi_opmode_table[MVM_OP_MODE];
1318         else
1319                 op = &iwlwifi_opmode_table[DVM_OP_MODE];
1320
1321         IWL_INFO(drv, "loaded firmware version %s op_mode %s\n",
1322                  drv->fw.fw_version, op->name);
1323
1324         /* add this device to the list of devices using this op_mode */
1325         list_add_tail(&drv->list, &op->drv);
1326
1327         if (op->ops) {
1328                 drv->op_mode = _iwl_op_mode_start(drv, op);
1329
1330                 if (!drv->op_mode) {
1331                         mutex_unlock(&iwlwifi_opmode_table_mtx);
1332                         goto out_unbind;
1333                 }
1334         } else {
1335                 load_module = true;
1336         }
1337         mutex_unlock(&iwlwifi_opmode_table_mtx);
1338
1339         /*
1340          * Complete the firmware request last so that
1341          * a driver unbind (stop) doesn't run while we
1342          * are doing the start() above.
1343          */
1344         complete(&drv->request_firmware_complete);
1345
1346         /*
1347          * Load the module last so we don't block anything
1348          * else from proceeding if the module fails to load
1349          * or hangs loading.
1350          */
1351         if (load_module) {
1352                 err = request_module("%s", op->name);
1353 #ifdef CONFIG_IWLWIFI_OPMODE_MODULAR
1354                 if (err)
1355                         IWL_ERR(drv,
1356                                 "failed to load module %s (error %d), is dynamic loading enabled?\n",
1357                                 op->name, err);
1358 #endif
1359         }
1360         kfree(pieces);
1361         return;
1362
1363  try_again:
1364         /* try next, if any */
1365         release_firmware(ucode_raw);
1366         if (iwl_request_firmware(drv, false))
1367                 goto out_unbind;
1368         kfree(pieces);
1369         return;
1370
1371  out_free_fw:
1372         IWL_ERR(drv, "failed to allocate pci memory\n");
1373         iwl_dealloc_ucode(drv);
1374         release_firmware(ucode_raw);
1375  out_unbind:
1376         kfree(pieces);
1377         complete(&drv->request_firmware_complete);
1378         device_release_driver(drv->trans->dev);
1379 }
1380
1381 struct iwl_drv *iwl_drv_start(struct iwl_trans *trans,
1382                               const struct iwl_cfg *cfg)
1383 {
1384         struct iwl_drv *drv;
1385         int ret;
1386
1387         drv = kzalloc(sizeof(*drv), GFP_KERNEL);
1388         if (!drv) {
1389                 ret = -ENOMEM;
1390                 goto err;
1391         }
1392
1393         drv->trans = trans;
1394         drv->dev = trans->dev;
1395         drv->cfg = cfg;
1396
1397         init_completion(&drv->request_firmware_complete);
1398         INIT_LIST_HEAD(&drv->list);
1399
1400 #ifdef CONFIG_IWLWIFI_DEBUGFS
1401         /* Create the device debugfs entries. */
1402         drv->dbgfs_drv = debugfs_create_dir(dev_name(trans->dev),
1403                                             iwl_dbgfs_root);
1404
1405         if (!drv->dbgfs_drv) {
1406                 IWL_ERR(drv, "failed to create debugfs directory\n");
1407                 ret = -ENOMEM;
1408                 goto err_free_drv;
1409         }
1410
1411         /* Create transport layer debugfs dir */
1412         drv->trans->dbgfs_dir = debugfs_create_dir("trans", drv->dbgfs_drv);
1413
1414         if (!drv->trans->dbgfs_dir) {
1415                 IWL_ERR(drv, "failed to create transport debugfs directory\n");
1416                 ret = -ENOMEM;
1417                 goto err_free_dbgfs;
1418         }
1419 #endif
1420
1421         ret = iwl_request_firmware(drv, true);
1422         if (ret) {
1423                 IWL_ERR(trans, "Couldn't request the fw\n");
1424                 goto err_fw;
1425         }
1426
1427         return drv;
1428
1429 err_fw:
1430 #ifdef CONFIG_IWLWIFI_DEBUGFS
1431 err_free_dbgfs:
1432         debugfs_remove_recursive(drv->dbgfs_drv);
1433 err_free_drv:
1434 #endif
1435         kfree(drv);
1436 err:
1437         return ERR_PTR(ret);
1438 }
1439
1440 void iwl_drv_stop(struct iwl_drv *drv)
1441 {
1442         wait_for_completion(&drv->request_firmware_complete);
1443
1444         _iwl_op_mode_stop(drv);
1445
1446         iwl_dealloc_ucode(drv);
1447
1448         mutex_lock(&iwlwifi_opmode_table_mtx);
1449         /*
1450          * List is empty (this item wasn't added)
1451          * when firmware loading failed -- in that
1452          * case we can't remove it from any list.
1453          */
1454         if (!list_empty(&drv->list))
1455                 list_del(&drv->list);
1456         mutex_unlock(&iwlwifi_opmode_table_mtx);
1457
1458 #ifdef CONFIG_IWLWIFI_DEBUGFS
1459         debugfs_remove_recursive(drv->dbgfs_drv);
1460 #endif
1461
1462         kfree(drv);
1463 }
1464
1465
1466 /* shared module parameters */
1467 struct iwl_mod_params iwlwifi_mod_params = {
1468         .restart_fw = true,
1469         .bt_coex_active = true,
1470         .power_level = IWL_POWER_INDEX_1,
1471         .d0i3_disable = true,
1472 #ifndef CONFIG_IWLWIFI_UAPSD
1473         .uapsd_disable = true,
1474 #endif /* CONFIG_IWLWIFI_UAPSD */
1475         /* the rest are 0 by default */
1476 };
1477 IWL_EXPORT_SYMBOL(iwlwifi_mod_params);
1478
1479 int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops)
1480 {
1481         int i;
1482         struct iwl_drv *drv;
1483         struct iwlwifi_opmode_table *op;
1484
1485         mutex_lock(&iwlwifi_opmode_table_mtx);
1486         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1487                 op = &iwlwifi_opmode_table[i];
1488                 if (strcmp(op->name, name))
1489                         continue;
1490                 op->ops = ops;
1491                 /* TODO: need to handle exceptional case */
1492                 list_for_each_entry(drv, &op->drv, list)
1493                         drv->op_mode = _iwl_op_mode_start(drv, op);
1494
1495                 mutex_unlock(&iwlwifi_opmode_table_mtx);
1496                 return 0;
1497         }
1498         mutex_unlock(&iwlwifi_opmode_table_mtx);
1499         return -EIO;
1500 }
1501 IWL_EXPORT_SYMBOL(iwl_opmode_register);
1502
1503 void iwl_opmode_deregister(const char *name)
1504 {
1505         int i;
1506         struct iwl_drv *drv;
1507
1508         mutex_lock(&iwlwifi_opmode_table_mtx);
1509         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1510                 if (strcmp(iwlwifi_opmode_table[i].name, name))
1511                         continue;
1512                 iwlwifi_opmode_table[i].ops = NULL;
1513
1514                 /* call the stop routine for all devices */
1515                 list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list)
1516                         _iwl_op_mode_stop(drv);
1517
1518                 mutex_unlock(&iwlwifi_opmode_table_mtx);
1519                 return;
1520         }
1521         mutex_unlock(&iwlwifi_opmode_table_mtx);
1522 }
1523 IWL_EXPORT_SYMBOL(iwl_opmode_deregister);
1524
1525 static int __init iwl_drv_init(void)
1526 {
1527         int i;
1528
1529         mutex_init(&iwlwifi_opmode_table_mtx);
1530
1531         for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++)
1532                 INIT_LIST_HEAD(&iwlwifi_opmode_table[i].drv);
1533
1534         pr_info(DRV_DESCRIPTION "\n");
1535         pr_info(DRV_COPYRIGHT "\n");
1536
1537 #ifdef CONFIG_IWLWIFI_DEBUGFS
1538         /* Create the root of iwlwifi debugfs subsystem. */
1539         iwl_dbgfs_root = debugfs_create_dir(DRV_NAME, NULL);
1540
1541         if (!iwl_dbgfs_root)
1542                 return -EFAULT;
1543 #endif
1544
1545         return iwl_pci_register_driver();
1546 }
1547 module_init(iwl_drv_init);
1548
1549 static void __exit iwl_drv_exit(void)
1550 {
1551         iwl_pci_unregister_driver();
1552
1553 #ifdef CONFIG_IWLWIFI_DEBUGFS
1554         debugfs_remove_recursive(iwl_dbgfs_root);
1555 #endif
1556 }
1557 module_exit(iwl_drv_exit);
1558
1559 #ifdef CONFIG_IWLWIFI_DEBUG
1560 module_param_named(debug, iwlwifi_mod_params.debug_level, uint,
1561                    S_IRUGO | S_IWUSR);
1562 MODULE_PARM_DESC(debug, "debug output mask");
1563 #endif
1564
1565 module_param_named(swcrypto, iwlwifi_mod_params.sw_crypto, int, S_IRUGO);
1566 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1567 module_param_named(11n_disable, iwlwifi_mod_params.disable_11n, uint, S_IRUGO);
1568 MODULE_PARM_DESC(11n_disable,
1569         "disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX");
1570 module_param_named(amsdu_size_8K, iwlwifi_mod_params.amsdu_size_8K,
1571                    int, S_IRUGO);
1572 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size (default 0)");
1573 module_param_named(fw_restart, iwlwifi_mod_params.restart_fw, bool, S_IRUGO);
1574 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error (default true)");
1575
1576 module_param_named(antenna_coupling, iwlwifi_mod_params.ant_coupling,
1577                    int, S_IRUGO);
1578 MODULE_PARM_DESC(antenna_coupling,
1579                  "specify antenna coupling in dB (default: 0 dB)");
1580
1581 module_param_named(nvm_file, iwlwifi_mod_params.nvm_file, charp, S_IRUGO);
1582 MODULE_PARM_DESC(nvm_file, "NVM file name");
1583
1584 module_param_named(d0i3_disable, iwlwifi_mod_params.d0i3_disable,
1585                    bool, S_IRUGO);
1586 MODULE_PARM_DESC(d0i3_disable, "disable d0i3 functionality (default: Y)");
1587
1588 module_param_named(lar_disable, iwlwifi_mod_params.lar_disable,
1589                    bool, S_IRUGO);
1590 MODULE_PARM_DESC(lar_disable, "disable LAR functionality (default: N)");
1591
1592 module_param_named(uapsd_disable, iwlwifi_mod_params.uapsd_disable,
1593                    bool, S_IRUGO | S_IWUSR);
1594 #ifdef CONFIG_IWLWIFI_UAPSD
1595 MODULE_PARM_DESC(uapsd_disable, "disable U-APSD functionality (default: N)");
1596 #else
1597 MODULE_PARM_DESC(uapsd_disable, "disable U-APSD functionality (default: Y)");
1598 #endif
1599
1600 /*
1601  * set bt_coex_active to true, uCode will do kill/defer
1602  * every time the priority line is asserted (BT is sending signals on the
1603  * priority line in the PCIx).
1604  * set bt_coex_active to false, uCode will ignore the BT activity and
1605  * perform the normal operation
1606  *
1607  * User might experience transmit issue on some platform due to WiFi/BT
1608  * co-exist problem. The possible behaviors are:
1609  *   Able to scan and finding all the available AP
1610  *   Not able to associate with any AP
1611  * On those platforms, WiFi communication can be restored by set
1612  * "bt_coex_active" module parameter to "false"
1613  *
1614  * default: bt_coex_active = true (BT_COEX_ENABLE)
1615  */
1616 module_param_named(bt_coex_active, iwlwifi_mod_params.bt_coex_active,
1617                 bool, S_IRUGO);
1618 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1619
1620 module_param_named(led_mode, iwlwifi_mod_params.led_mode, int, S_IRUGO);
1621 MODULE_PARM_DESC(led_mode, "0=system default, "
1622                 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1623
1624 module_param_named(power_save, iwlwifi_mod_params.power_save,
1625                 bool, S_IRUGO);
1626 MODULE_PARM_DESC(power_save,
1627                  "enable WiFi power management (default: disable)");
1628
1629 module_param_named(power_level, iwlwifi_mod_params.power_level,
1630                 int, S_IRUGO);
1631 MODULE_PARM_DESC(power_level,
1632                  "default power save level (range from 1 - 5, default: 1)");
1633
1634 module_param_named(fw_monitor, iwlwifi_mod_params.fw_monitor, bool, S_IRUGO);
1635 MODULE_PARM_DESC(fw_monitor,
1636                  "firmware monitor - to debug FW (default: false - needs lots of memory)");