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) 2012 - 2014 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 11 * Copyright(c) 2018 Intel Corporation 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of version 2 of the GNU General Public License as 15 * published by the Free Software Foundation. 16 * 17 * This program is distributed in the hope that it will be useful, but 18 * WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 20 * General Public License for more details. 21 * 22 * The full GNU General Public License is included in this distribution 23 * in the file called COPYING. 24 * 25 * Contact Information: 26 * Intel Linux Wireless <linuxwifi@intel.com> 27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 28 * 29 * BSD LICENSE 30 * 31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 32 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 33 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 34 * Copyright(c) 2018 Intel Corporation 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 41 * * Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * * Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in 45 * the documentation and/or other materials provided with the 46 * distribution. 47 * * Neither the name Intel Corporation nor the names of its 48 * contributors may be used to endorse or promote products derived 49 * from this software without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 * 63 *****************************************************************************/ 64 #include <linux/firmware.h> 65 #include <linux/rtnetlink.h> 66 #include "iwl-trans.h" 67 #include "iwl-csr.h" 68 #include "mvm.h" 69 #include "iwl-eeprom-parse.h" 70 #include "iwl-eeprom-read.h" 71 #include "iwl-nvm-parse.h" 72 #include "iwl-prph.h" 73 #include "fw/acpi.h" 74 75 /* Default NVM size to read */ 76 #define IWL_NVM_DEFAULT_CHUNK_SIZE (2 * 1024) 77 78 #define NVM_WRITE_OPCODE 1 79 #define NVM_READ_OPCODE 0 80 81 /* load nvm chunk response */ 82 enum { 83 READ_NVM_CHUNK_SUCCEED = 0, 84 READ_NVM_CHUNK_NOT_VALID_ADDRESS = 1 85 }; 86 87 /* 88 * prepare the NVM host command w/ the pointers to the nvm buffer 89 * and send it to fw 90 */ 91 static int iwl_nvm_write_chunk(struct iwl_mvm *mvm, u16 section, 92 u16 offset, u16 length, const u8 *data) 93 { 94 struct iwl_nvm_access_cmd nvm_access_cmd = { 95 .offset = cpu_to_le16(offset), 96 .length = cpu_to_le16(length), 97 .type = cpu_to_le16(section), 98 .op_code = NVM_WRITE_OPCODE, 99 }; 100 struct iwl_host_cmd cmd = { 101 .id = NVM_ACCESS_CMD, 102 .len = { sizeof(struct iwl_nvm_access_cmd), length }, 103 .flags = CMD_WANT_SKB | CMD_SEND_IN_RFKILL, 104 .data = { &nvm_access_cmd, data }, 105 /* data may come from vmalloc, so use _DUP */ 106 .dataflags = { 0, IWL_HCMD_DFL_DUP }, 107 }; 108 struct iwl_rx_packet *pkt; 109 struct iwl_nvm_access_resp *nvm_resp; 110 int ret; 111 112 ret = iwl_mvm_send_cmd(mvm, &cmd); 113 if (ret) 114 return ret; 115 116 pkt = cmd.resp_pkt; 117 /* Extract & check NVM write response */ 118 nvm_resp = (void *)pkt->data; 119 if (le16_to_cpu(nvm_resp->status) != READ_NVM_CHUNK_SUCCEED) { 120 IWL_ERR(mvm, 121 "NVM access write command failed for section %u (status = 0x%x)\n", 122 section, le16_to_cpu(nvm_resp->status)); 123 ret = -EIO; 124 } 125 126 iwl_free_resp(&cmd); 127 return ret; 128 } 129 130 static int iwl_nvm_read_chunk(struct iwl_mvm *mvm, u16 section, 131 u16 offset, u16 length, u8 *data) 132 { 133 struct iwl_nvm_access_cmd nvm_access_cmd = { 134 .offset = cpu_to_le16(offset), 135 .length = cpu_to_le16(length), 136 .type = cpu_to_le16(section), 137 .op_code = NVM_READ_OPCODE, 138 }; 139 struct iwl_nvm_access_resp *nvm_resp; 140 struct iwl_rx_packet *pkt; 141 struct iwl_host_cmd cmd = { 142 .id = NVM_ACCESS_CMD, 143 .flags = CMD_WANT_SKB | CMD_SEND_IN_RFKILL, 144 .data = { &nvm_access_cmd, }, 145 }; 146 int ret, bytes_read, offset_read; 147 u8 *resp_data; 148 149 cmd.len[0] = sizeof(struct iwl_nvm_access_cmd); 150 151 ret = iwl_mvm_send_cmd(mvm, &cmd); 152 if (ret) 153 return ret; 154 155 pkt = cmd.resp_pkt; 156 157 /* Extract NVM response */ 158 nvm_resp = (void *)pkt->data; 159 ret = le16_to_cpu(nvm_resp->status); 160 bytes_read = le16_to_cpu(nvm_resp->length); 161 offset_read = le16_to_cpu(nvm_resp->offset); 162 resp_data = nvm_resp->data; 163 if (ret) { 164 if ((offset != 0) && 165 (ret == READ_NVM_CHUNK_NOT_VALID_ADDRESS)) { 166 /* 167 * meaning of NOT_VALID_ADDRESS: 168 * driver try to read chunk from address that is 169 * multiple of 2K and got an error since addr is empty. 170 * meaning of (offset != 0): driver already 171 * read valid data from another chunk so this case 172 * is not an error. 173 */ 174 IWL_DEBUG_EEPROM(mvm->trans->dev, 175 "NVM access command failed on offset 0x%x since that section size is multiple 2K\n", 176 offset); 177 ret = 0; 178 } else { 179 IWL_DEBUG_EEPROM(mvm->trans->dev, 180 "NVM access command failed with status %d (device: %s)\n", 181 ret, mvm->cfg->name); 182 ret = -ENODATA; 183 } 184 goto exit; 185 } 186 187 if (offset_read != offset) { 188 IWL_ERR(mvm, "NVM ACCESS response with invalid offset %d\n", 189 offset_read); 190 ret = -EINVAL; 191 goto exit; 192 } 193 194 /* Write data to NVM */ 195 memcpy(data + offset, resp_data, bytes_read); 196 ret = bytes_read; 197 198 exit: 199 iwl_free_resp(&cmd); 200 return ret; 201 } 202 203 static int iwl_nvm_write_section(struct iwl_mvm *mvm, u16 section, 204 const u8 *data, u16 length) 205 { 206 int offset = 0; 207 208 /* copy data in chunks of 2k (and remainder if any) */ 209 210 while (offset < length) { 211 int chunk_size, ret; 212 213 chunk_size = min(IWL_NVM_DEFAULT_CHUNK_SIZE, 214 length - offset); 215 216 ret = iwl_nvm_write_chunk(mvm, section, offset, 217 chunk_size, data + offset); 218 if (ret < 0) 219 return ret; 220 221 offset += chunk_size; 222 } 223 224 return 0; 225 } 226 227 /* 228 * Reads an NVM section completely. 229 * NICs prior to 7000 family doesn't have a real NVM, but just read 230 * section 0 which is the EEPROM. Because the EEPROM reading is unlimited 231 * by uCode, we need to manually check in this case that we don't 232 * overflow and try to read more than the EEPROM size. 233 * For 7000 family NICs, we supply the maximal size we can read, and 234 * the uCode fills the response with as much data as we can, 235 * without overflowing, so no check is needed. 236 */ 237 static int iwl_nvm_read_section(struct iwl_mvm *mvm, u16 section, 238 u8 *data, u32 size_read) 239 { 240 u16 length, offset = 0; 241 int ret; 242 243 /* Set nvm section read length */ 244 length = IWL_NVM_DEFAULT_CHUNK_SIZE; 245 246 ret = length; 247 248 /* Read the NVM until exhausted (reading less than requested) */ 249 while (ret == length) { 250 /* Check no memory assumptions fail and cause an overflow */ 251 if ((size_read + offset + length) > 252 mvm->trans->trans_cfg->base_params->eeprom_size) { 253 IWL_ERR(mvm, "EEPROM size is too small for NVM\n"); 254 return -ENOBUFS; 255 } 256 257 ret = iwl_nvm_read_chunk(mvm, section, offset, length, data); 258 if (ret < 0) { 259 IWL_DEBUG_EEPROM(mvm->trans->dev, 260 "Cannot read NVM from section %d offset %d, length %d\n", 261 section, offset, length); 262 return ret; 263 } 264 offset += ret; 265 } 266 267 iwl_nvm_fixups(mvm->trans->hw_id, section, data, offset); 268 269 IWL_DEBUG_EEPROM(mvm->trans->dev, 270 "NVM section %d read completed\n", section); 271 return offset; 272 } 273 274 static struct iwl_nvm_data * 275 iwl_parse_nvm_sections(struct iwl_mvm *mvm) 276 { 277 struct iwl_nvm_section *sections = mvm->nvm_sections; 278 const __be16 *hw; 279 const __le16 *sw, *calib, *regulatory, *mac_override, *phy_sku; 280 bool lar_enabled; 281 int regulatory_type; 282 283 /* Checking for required sections */ 284 if (mvm->trans->cfg->nvm_type != IWL_NVM_EXT) { 285 if (!mvm->nvm_sections[NVM_SECTION_TYPE_SW].data || 286 !mvm->nvm_sections[mvm->cfg->nvm_hw_section_num].data) { 287 IWL_ERR(mvm, "Can't parse empty OTP/NVM sections\n"); 288 return NULL; 289 } 290 } else { 291 if (mvm->trans->cfg->nvm_type == IWL_NVM_SDP) 292 regulatory_type = NVM_SECTION_TYPE_REGULATORY_SDP; 293 else 294 regulatory_type = NVM_SECTION_TYPE_REGULATORY; 295 296 /* SW and REGULATORY sections are mandatory */ 297 if (!mvm->nvm_sections[NVM_SECTION_TYPE_SW].data || 298 !mvm->nvm_sections[regulatory_type].data) { 299 IWL_ERR(mvm, 300 "Can't parse empty family 8000 OTP/NVM sections\n"); 301 return NULL; 302 } 303 /* MAC_OVERRIDE or at least HW section must exist */ 304 if (!mvm->nvm_sections[mvm->cfg->nvm_hw_section_num].data && 305 !mvm->nvm_sections[NVM_SECTION_TYPE_MAC_OVERRIDE].data) { 306 IWL_ERR(mvm, 307 "Can't parse mac_address, empty sections\n"); 308 return NULL; 309 } 310 311 /* PHY_SKU section is mandatory in B0 */ 312 if (!mvm->nvm_sections[NVM_SECTION_TYPE_PHY_SKU].data) { 313 IWL_ERR(mvm, 314 "Can't parse phy_sku in B0, empty sections\n"); 315 return NULL; 316 } 317 } 318 319 hw = (const __be16 *)sections[mvm->cfg->nvm_hw_section_num].data; 320 sw = (const __le16 *)sections[NVM_SECTION_TYPE_SW].data; 321 calib = (const __le16 *)sections[NVM_SECTION_TYPE_CALIBRATION].data; 322 mac_override = 323 (const __le16 *)sections[NVM_SECTION_TYPE_MAC_OVERRIDE].data; 324 phy_sku = (const __le16 *)sections[NVM_SECTION_TYPE_PHY_SKU].data; 325 326 regulatory = mvm->trans->cfg->nvm_type == IWL_NVM_SDP ? 327 (const __le16 *)sections[NVM_SECTION_TYPE_REGULATORY_SDP].data : 328 (const __le16 *)sections[NVM_SECTION_TYPE_REGULATORY].data; 329 330 lar_enabled = !iwlwifi_mod_params.lar_disable && 331 fw_has_capa(&mvm->fw->ucode_capa, 332 IWL_UCODE_TLV_CAPA_LAR_SUPPORT); 333 334 return iwl_parse_nvm_data(mvm->trans, mvm->cfg, hw, sw, calib, 335 regulatory, mac_override, phy_sku, 336 mvm->fw->valid_tx_ant, mvm->fw->valid_rx_ant, 337 lar_enabled); 338 } 339 340 /* Loads the NVM data stored in mvm->nvm_sections into the NIC */ 341 int iwl_mvm_load_nvm_to_nic(struct iwl_mvm *mvm) 342 { 343 int i, ret = 0; 344 struct iwl_nvm_section *sections = mvm->nvm_sections; 345 346 IWL_DEBUG_EEPROM(mvm->trans->dev, "'Write to NVM\n"); 347 348 for (i = 0; i < ARRAY_SIZE(mvm->nvm_sections); i++) { 349 if (!mvm->nvm_sections[i].data || !mvm->nvm_sections[i].length) 350 continue; 351 ret = iwl_nvm_write_section(mvm, i, sections[i].data, 352 sections[i].length); 353 if (ret < 0) { 354 IWL_ERR(mvm, "iwl_mvm_send_cmd failed: %d\n", ret); 355 break; 356 } 357 } 358 return ret; 359 } 360 361 int iwl_nvm_init(struct iwl_mvm *mvm) 362 { 363 int ret, section; 364 u32 size_read = 0; 365 u8 *nvm_buffer, *temp; 366 const char *nvm_file_C = mvm->cfg->default_nvm_file_C_step; 367 368 if (WARN_ON_ONCE(mvm->cfg->nvm_hw_section_num >= NVM_MAX_NUM_SECTIONS)) 369 return -EINVAL; 370 371 /* load NVM values from nic */ 372 /* Read From FW NVM */ 373 IWL_DEBUG_EEPROM(mvm->trans->dev, "Read from NVM\n"); 374 375 nvm_buffer = kmalloc(mvm->trans->trans_cfg->base_params->eeprom_size, 376 GFP_KERNEL); 377 if (!nvm_buffer) 378 return -ENOMEM; 379 for (section = 0; section < NVM_MAX_NUM_SECTIONS; section++) { 380 /* we override the constness for initial read */ 381 ret = iwl_nvm_read_section(mvm, section, nvm_buffer, 382 size_read); 383 if (ret == -ENODATA) { 384 ret = 0; 385 continue; 386 } 387 if (ret < 0) 388 break; 389 size_read += ret; 390 temp = kmemdup(nvm_buffer, ret, GFP_KERNEL); 391 if (!temp) { 392 ret = -ENOMEM; 393 break; 394 } 395 396 iwl_nvm_fixups(mvm->trans->hw_id, section, temp, ret); 397 398 mvm->nvm_sections[section].data = temp; 399 mvm->nvm_sections[section].length = ret; 400 401 #ifdef CONFIG_IWLWIFI_DEBUGFS 402 switch (section) { 403 case NVM_SECTION_TYPE_SW: 404 mvm->nvm_sw_blob.data = temp; 405 mvm->nvm_sw_blob.size = ret; 406 break; 407 case NVM_SECTION_TYPE_CALIBRATION: 408 mvm->nvm_calib_blob.data = temp; 409 mvm->nvm_calib_blob.size = ret; 410 break; 411 case NVM_SECTION_TYPE_PRODUCTION: 412 mvm->nvm_prod_blob.data = temp; 413 mvm->nvm_prod_blob.size = ret; 414 break; 415 case NVM_SECTION_TYPE_PHY_SKU: 416 mvm->nvm_phy_sku_blob.data = temp; 417 mvm->nvm_phy_sku_blob.size = ret; 418 break; 419 case NVM_SECTION_TYPE_REGULATORY_SDP: 420 case NVM_SECTION_TYPE_REGULATORY: 421 mvm->nvm_reg_blob.data = temp; 422 mvm->nvm_reg_blob.size = ret; 423 break; 424 default: 425 if (section == mvm->cfg->nvm_hw_section_num) { 426 mvm->nvm_hw_blob.data = temp; 427 mvm->nvm_hw_blob.size = ret; 428 break; 429 } 430 } 431 #endif 432 } 433 if (!size_read) 434 IWL_ERR(mvm, "OTP is blank\n"); 435 kfree(nvm_buffer); 436 437 /* Only if PNVM selected in the mod param - load external NVM */ 438 if (mvm->nvm_file_name) { 439 /* read External NVM file from the mod param */ 440 ret = iwl_read_external_nvm(mvm->trans, mvm->nvm_file_name, 441 mvm->nvm_sections); 442 if (ret) { 443 mvm->nvm_file_name = nvm_file_C; 444 445 if ((ret == -EFAULT || ret == -ENOENT) && 446 mvm->nvm_file_name) { 447 /* in case nvm file was failed try again */ 448 ret = iwl_read_external_nvm(mvm->trans, 449 mvm->nvm_file_name, 450 mvm->nvm_sections); 451 if (ret) 452 return ret; 453 } else { 454 return ret; 455 } 456 } 457 } 458 459 /* parse the relevant nvm sections */ 460 mvm->nvm_data = iwl_parse_nvm_sections(mvm); 461 if (!mvm->nvm_data) 462 return -ENODATA; 463 IWL_DEBUG_EEPROM(mvm->trans->dev, "nvm version = %x\n", 464 mvm->nvm_data->nvm_version); 465 466 return ret < 0 ? ret : 0; 467 } 468 469 struct iwl_mcc_update_resp * 470 iwl_mvm_update_mcc(struct iwl_mvm *mvm, const char *alpha2, 471 enum iwl_mcc_source src_id) 472 { 473 struct iwl_mcc_update_cmd mcc_update_cmd = { 474 .mcc = cpu_to_le16(alpha2[0] << 8 | alpha2[1]), 475 .source_id = (u8)src_id, 476 }; 477 struct iwl_mcc_update_resp *resp_cp; 478 struct iwl_rx_packet *pkt; 479 struct iwl_host_cmd cmd = { 480 .id = MCC_UPDATE_CMD, 481 .flags = CMD_WANT_SKB, 482 .data = { &mcc_update_cmd }, 483 }; 484 485 int ret; 486 u32 status; 487 int resp_len, n_channels; 488 u16 mcc; 489 490 if (WARN_ON_ONCE(!iwl_mvm_is_lar_supported(mvm))) 491 return ERR_PTR(-EOPNOTSUPP); 492 493 cmd.len[0] = sizeof(struct iwl_mcc_update_cmd); 494 495 IWL_DEBUG_LAR(mvm, "send MCC update to FW with '%c%c' src = %d\n", 496 alpha2[0], alpha2[1], src_id); 497 498 ret = iwl_mvm_send_cmd(mvm, &cmd); 499 if (ret) 500 return ERR_PTR(ret); 501 502 pkt = cmd.resp_pkt; 503 504 /* Extract MCC response */ 505 if (fw_has_capa(&mvm->fw->ucode_capa, 506 IWL_UCODE_TLV_CAPA_MCC_UPDATE_11AX_SUPPORT)) { 507 struct iwl_mcc_update_resp *mcc_resp = (void *)pkt->data; 508 509 n_channels = __le32_to_cpu(mcc_resp->n_channels); 510 resp_len = sizeof(struct iwl_mcc_update_resp) + 511 n_channels * sizeof(__le32); 512 resp_cp = kmemdup(mcc_resp, resp_len, GFP_KERNEL); 513 if (!resp_cp) { 514 resp_cp = ERR_PTR(-ENOMEM); 515 goto exit; 516 } 517 } else { 518 struct iwl_mcc_update_resp_v3 *mcc_resp_v3 = (void *)pkt->data; 519 520 n_channels = __le32_to_cpu(mcc_resp_v3->n_channels); 521 resp_len = sizeof(struct iwl_mcc_update_resp) + 522 n_channels * sizeof(__le32); 523 resp_cp = kzalloc(resp_len, GFP_KERNEL); 524 if (!resp_cp) { 525 resp_cp = ERR_PTR(-ENOMEM); 526 goto exit; 527 } 528 529 resp_cp->status = mcc_resp_v3->status; 530 resp_cp->mcc = mcc_resp_v3->mcc; 531 resp_cp->cap = cpu_to_le16(mcc_resp_v3->cap); 532 resp_cp->source_id = mcc_resp_v3->source_id; 533 resp_cp->time = mcc_resp_v3->time; 534 resp_cp->geo_info = mcc_resp_v3->geo_info; 535 resp_cp->n_channels = mcc_resp_v3->n_channels; 536 memcpy(resp_cp->channels, mcc_resp_v3->channels, 537 n_channels * sizeof(__le32)); 538 } 539 540 status = le32_to_cpu(resp_cp->status); 541 542 mcc = le16_to_cpu(resp_cp->mcc); 543 544 /* W/A for a FW/NVM issue - returns 0x00 for the world domain */ 545 if (mcc == 0) { 546 mcc = 0x3030; /* "00" - world */ 547 resp_cp->mcc = cpu_to_le16(mcc); 548 } 549 550 IWL_DEBUG_LAR(mvm, 551 "MCC response status: 0x%x. new MCC: 0x%x ('%c%c') n_chans: %d\n", 552 status, mcc, mcc >> 8, mcc & 0xff, n_channels); 553 554 exit: 555 iwl_free_resp(&cmd); 556 return resp_cp; 557 } 558 559 int iwl_mvm_init_mcc(struct iwl_mvm *mvm) 560 { 561 bool tlv_lar; 562 bool nvm_lar; 563 int retval; 564 struct ieee80211_regdomain *regd; 565 char mcc[3]; 566 567 if (mvm->cfg->nvm_type == IWL_NVM_EXT) { 568 tlv_lar = fw_has_capa(&mvm->fw->ucode_capa, 569 IWL_UCODE_TLV_CAPA_LAR_SUPPORT); 570 nvm_lar = mvm->nvm_data->lar_enabled; 571 if (tlv_lar != nvm_lar) 572 IWL_INFO(mvm, 573 "Conflict between TLV & NVM regarding enabling LAR (TLV = %s NVM =%s)\n", 574 tlv_lar ? "enabled" : "disabled", 575 nvm_lar ? "enabled" : "disabled"); 576 } 577 578 if (!iwl_mvm_is_lar_supported(mvm)) 579 return 0; 580 581 /* 582 * try to replay the last set MCC to FW. If it doesn't exist, 583 * queue an update to cfg80211 to retrieve the default alpha2 from FW. 584 */ 585 retval = iwl_mvm_init_fw_regd(mvm); 586 if (retval != -ENOENT) 587 return retval; 588 589 /* 590 * Driver regulatory hint for initial update, this also informs the 591 * firmware we support wifi location updates. 592 * Disallow scans that might crash the FW while the LAR regdomain 593 * is not set. 594 */ 595 mvm->lar_regdom_set = false; 596 597 regd = iwl_mvm_get_current_regdomain(mvm, NULL); 598 if (IS_ERR_OR_NULL(regd)) 599 return -EIO; 600 601 if (iwl_mvm_is_wifi_mcc_supported(mvm) && 602 !iwl_acpi_get_mcc(mvm->dev, mcc)) { 603 kfree(regd); 604 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, mcc, 605 MCC_SOURCE_BIOS, NULL); 606 if (IS_ERR_OR_NULL(regd)) 607 return -EIO; 608 } 609 610 retval = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd); 611 kfree(regd); 612 return retval; 613 } 614 615 void iwl_mvm_rx_chub_update_mcc(struct iwl_mvm *mvm, 616 struct iwl_rx_cmd_buffer *rxb) 617 { 618 struct iwl_rx_packet *pkt = rxb_addr(rxb); 619 struct iwl_mcc_chub_notif *notif = (void *)pkt->data; 620 enum iwl_mcc_source src; 621 char mcc[3]; 622 struct ieee80211_regdomain *regd; 623 int wgds_tbl_idx; 624 625 lockdep_assert_held(&mvm->mutex); 626 627 if (iwl_mvm_is_vif_assoc(mvm) && notif->source_id == MCC_SOURCE_WIFI) { 628 IWL_DEBUG_LAR(mvm, "Ignore mcc update while associated\n"); 629 return; 630 } 631 632 if (WARN_ON_ONCE(!iwl_mvm_is_lar_supported(mvm))) 633 return; 634 635 mcc[0] = le16_to_cpu(notif->mcc) >> 8; 636 mcc[1] = le16_to_cpu(notif->mcc) & 0xff; 637 mcc[2] = '\0'; 638 src = notif->source_id; 639 640 IWL_DEBUG_LAR(mvm, 641 "RX: received chub update mcc cmd (mcc '%s' src %d)\n", 642 mcc, src); 643 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, mcc, src, NULL); 644 if (IS_ERR_OR_NULL(regd)) 645 return; 646 647 wgds_tbl_idx = iwl_mvm_get_sar_geo_profile(mvm); 648 if (wgds_tbl_idx < 0) 649 IWL_DEBUG_INFO(mvm, "SAR WGDS is disabled (%d)\n", 650 wgds_tbl_idx); 651 else 652 IWL_DEBUG_INFO(mvm, "SAR WGDS: geo profile %d is configured\n", 653 wgds_tbl_idx); 654 655 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd); 656 kfree(regd); 657 } 658