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