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