drivers/net/wireless/intel/iwlwifi/mvm/nvm.c

   1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
   2 /*
   3  * Copyright (C) 2012-2014, 2018-2019 Intel Corporation
   4  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
   5  * Copyright (C) 2016-2017 Intel Deutschland GmbH
   6  */
   7 #include <linux/firmware.h>
   8 #include <linux/rtnetlink.h>
   9 #include "iwl-trans.h"
  10 #include "iwl-csr.h"
  11 #include "mvm.h"
  12 #include "iwl-eeprom-parse.h"
  13 #include "iwl-eeprom-read.h"
  14 #include "iwl-nvm-parse.h"
  15 #include "iwl-prph.h"
  16 #include "fw/acpi.h"
  17
  18 /* Default NVM size to read */
  19 #define IWL_NVM_DEFAULT_CHUNK_SIZE (2 * 1024)
  20
  21 #define NVM_WRITE_OPCODE 1
  22 #define NVM_READ_OPCODE 0
  23
  24 /* load nvm chunk response */
  25 enum {
  26         READ_NVM_CHUNK_SUCCEED = 0,
  27         READ_NVM_CHUNK_NOT_VALID_ADDRESS = 1
  28 };
  29
  30 /*
  31  * prepare the NVM host command w/ the pointers to the nvm buffer
  32  * and send it to fw
  33  */
  34 static int iwl_nvm_write_chunk(struct iwl_mvm *mvm, u16 section,
  35                                u16 offset, u16 length, const u8 *data)
  36 {
  37         struct iwl_nvm_access_cmd nvm_access_cmd = {
  38                 .offset = cpu_to_le16(offset),
  39                 .length = cpu_to_le16(length),
  40                 .type = cpu_to_le16(section),
  41                 .op_code = NVM_WRITE_OPCODE,
  42         };
  43         struct iwl_host_cmd cmd = {
  44                 .id = NVM_ACCESS_CMD,
  45                 .len = { sizeof(struct iwl_nvm_access_cmd), length },
  46                 .flags = CMD_WANT_SKB | CMD_SEND_IN_RFKILL,
  47                 .data = { &nvm_access_cmd, data },
  48                 /* data may come from vmalloc, so use _DUP */
  49                 .dataflags = { 0, IWL_HCMD_DFL_DUP },
  50         };
  51         struct iwl_rx_packet *pkt;
  52         struct iwl_nvm_access_resp *nvm_resp;
  53         int ret;
  54
  55         ret = iwl_mvm_send_cmd(mvm, &cmd);
  56         if (ret)
  57                 return ret;
  58
  59         pkt = cmd.resp_pkt;
  60         /* Extract & check NVM write response */
  61         nvm_resp = (void *)pkt->data;
  62         if (le16_to_cpu(nvm_resp->status) != READ_NVM_CHUNK_SUCCEED) {
  63                 IWL_ERR(mvm,
  64                         "NVM access write command failed for section %u (status = 0x%x)\n",
  65                         section, le16_to_cpu(nvm_resp->status));
  66                 ret = -EIO;
  67         }
  68
  69         iwl_free_resp(&cmd);
  70         return ret;
  71 }
  72
  73 static int iwl_nvm_read_chunk(struct iwl_mvm *mvm, u16 section,
  74                               u16 offset, u16 length, u8 *data)
  75 {
  76         struct iwl_nvm_access_cmd nvm_access_cmd = {
  77                 .offset = cpu_to_le16(offset),
  78                 .length = cpu_to_le16(length),
  79                 .type = cpu_to_le16(section),
  80                 .op_code = NVM_READ_OPCODE,
  81         };
  82         struct iwl_nvm_access_resp *nvm_resp;
  83         struct iwl_rx_packet *pkt;
  84         struct iwl_host_cmd cmd = {
  85                 .id = NVM_ACCESS_CMD,
  86                 .flags = CMD_WANT_SKB | CMD_SEND_IN_RFKILL,
  87                 .data = { &nvm_access_cmd, },
  88         };
  89         int ret, bytes_read, offset_read;
  90         u8 *resp_data;
  91
  92         cmd.len[0] = sizeof(struct iwl_nvm_access_cmd);
  93
  94         ret = iwl_mvm_send_cmd(mvm, &cmd);
  95         if (ret)
  96                 return ret;
  97
  98         pkt = cmd.resp_pkt;
  99
 100         /* Extract NVM response */
 101         nvm_resp = (void *)pkt->data;
 102         ret = le16_to_cpu(nvm_resp->status);
 103         bytes_read = le16_to_cpu(nvm_resp->length);
 104         offset_read = le16_to_cpu(nvm_resp->offset);
 105         resp_data = nvm_resp->data;
 106         if (ret) {
 107                 if ((offset != 0) &&
 108                     (ret == READ_NVM_CHUNK_NOT_VALID_ADDRESS)) {
 109                         /*
 110                          * meaning of NOT_VALID_ADDRESS:
 111                          * driver try to read chunk from address that is
 112                          * multiple of 2K and got an error since addr is empty.
 113                          * meaning of (offset != 0): driver already
 114                          * read valid data from another chunk so this case
 115                          * is not an error.
 116                          */
 117                         IWL_DEBUG_EEPROM(mvm->trans->dev,
 118                                          "NVM access command failed on offset 0x%x since that section size is multiple 2K\n",
 119                                          offset);
 120                         ret = 0;
 121                 } else {
 122                         IWL_DEBUG_EEPROM(mvm->trans->dev,
 123                                          "NVM access command failed with status %d (device: %s)\n",
 124                                          ret, mvm->trans->name);
 125                         ret = -ENODATA;
 126                 }
 127                 goto exit;
 128         }
 129
 130         if (offset_read != offset) {
 131                 IWL_ERR(mvm, "NVM ACCESS response with invalid offset %d\n",
 132                         offset_read);
 133                 ret = -EINVAL;
 134                 goto exit;
 135         }
 136
 137         /* Write data to NVM */
 138         memcpy(data + offset, resp_data, bytes_read);
 139         ret = bytes_read;
 140
 141 exit:
 142         iwl_free_resp(&cmd);
 143         return ret;
 144 }
 145
 146 static int iwl_nvm_write_section(struct iwl_mvm *mvm, u16 section,
 147                                  const u8 *data, u16 length)
 148 {
 149         int offset = 0;
 150
 151         /* copy data in chunks of 2k (and remainder if any) */
 152
 153         while (offset < length) {
 154                 int chunk_size, ret;
 155
 156                 chunk_size = min(IWL_NVM_DEFAULT_CHUNK_SIZE,
 157                                  length - offset);
 158
 159                 ret = iwl_nvm_write_chunk(mvm, section, offset,
 160                                           chunk_size, data + offset);
 161                 if (ret < 0)
 162                         return ret;
 163
 164                 offset += chunk_size;
 165         }
 166
 167         return 0;
 168 }
 169
 170 /*
 171  * Reads an NVM section completely.
 172  * NICs prior to 7000 family doesn't have a real NVM, but just read
 173  * section 0 which is the EEPROM. Because the EEPROM reading is unlimited
 174  * by uCode, we need to manually check in this case that we don't
 175  * overflow and try to read more than the EEPROM size.
 176  * For 7000 family NICs, we supply the maximal size we can read, and
 177  * the uCode fills the response with as much data as we can,
 178  * without overflowing, so no check is needed.
 179  */
 180 static int iwl_nvm_read_section(struct iwl_mvm *mvm, u16 section,
 181                                 u8 *data, u32 size_read)
 182 {
 183         u16 length, offset = 0;
 184         int ret;
 185
 186         /* Set nvm section read length */
 187         length = IWL_NVM_DEFAULT_CHUNK_SIZE;
 188
 189         ret = length;
 190
 191         /* Read the NVM until exhausted (reading less than requested) */
 192         while (ret == length) {
 193                 /* Check no memory assumptions fail and cause an overflow */
 194                 if ((size_read + offset + length) >
 195                     mvm->trans->trans_cfg->base_params->eeprom_size) {
 196                         IWL_ERR(mvm, "EEPROM size is too small for NVM\n");
 197                         return -ENOBUFS;
 198                 }
 199
 200                 ret = iwl_nvm_read_chunk(mvm, section, offset, length, data);
 201                 if (ret < 0) {
 202                         IWL_DEBUG_EEPROM(mvm->trans->dev,
 203                                          "Cannot read NVM from section %d offset %d, length %d\n",
 204                                          section, offset, length);
 205                         return ret;
 206                 }
 207                 offset += ret;
 208         }
 209
 210         iwl_nvm_fixups(mvm->trans->hw_id, section, data, offset);
 211
 212         IWL_DEBUG_EEPROM(mvm->trans->dev,
 213                          "NVM section %d read completed\n", section);
 214         return offset;
 215 }
 216
 217 static struct iwl_nvm_data *
 218 iwl_parse_nvm_sections(struct iwl_mvm *mvm)
 219 {
 220         struct iwl_nvm_section *sections = mvm->nvm_sections;
 221         const __be16 *hw;
 222         const __le16 *sw, *calib, *regulatory, *mac_override, *phy_sku;
 223         int regulatory_type;
 224
 225         /* Checking for required sections */
 226         if (mvm->trans->cfg->nvm_type == IWL_NVM) {
 227                 if (!mvm->nvm_sections[NVM_SECTION_TYPE_SW].data ||
 228                     !mvm->nvm_sections[mvm->cfg->nvm_hw_section_num].data) {
 229                         IWL_ERR(mvm, "Can't parse empty OTP/NVM sections\n");
 230                         return NULL;
 231                 }
 232         } else {
 233                 if (mvm->trans->cfg->nvm_type == IWL_NVM_SDP)
 234                         regulatory_type = NVM_SECTION_TYPE_REGULATORY_SDP;
 235                 else
 236                         regulatory_type = NVM_SECTION_TYPE_REGULATORY;
 237
 238                 /* SW and REGULATORY sections are mandatory */
 239                 if (!mvm->nvm_sections[NVM_SECTION_TYPE_SW].data ||
 240                     !mvm->nvm_sections[regulatory_type].data) {
 241                         IWL_ERR(mvm,
 242                                 "Can't parse empty family 8000 OTP/NVM sections\n");
 243                         return NULL;
 244                 }
 245                 /* MAC_OVERRIDE or at least HW section must exist */
 246                 if (!mvm->nvm_sections[mvm->cfg->nvm_hw_section_num].data &&
 247                     !mvm->nvm_sections[NVM_SECTION_TYPE_MAC_OVERRIDE].data) {
 248                         IWL_ERR(mvm,
 249                                 "Can't parse mac_address, empty sections\n");
 250                         return NULL;
 251                 }
 252
 253                 /* PHY_SKU section is mandatory in B0 */
 254                 if (mvm->trans->cfg->nvm_type == IWL_NVM_EXT &&
 255                     !mvm->nvm_sections[NVM_SECTION_TYPE_PHY_SKU].data) {
 256                         IWL_ERR(mvm,
 257                                 "Can't parse phy_sku in B0, empty sections\n");
 258                         return NULL;
 259                 }
 260         }
 261
 262         hw = (const __be16 *)sections[mvm->cfg->nvm_hw_section_num].data;
 263         sw = (const __le16 *)sections[NVM_SECTION_TYPE_SW].data;
 264         calib = (const __le16 *)sections[NVM_SECTION_TYPE_CALIBRATION].data;
 265         mac_override =
 266                 (const __le16 *)sections[NVM_SECTION_TYPE_MAC_OVERRIDE].data;
 267         phy_sku = (const __le16 *)sections[NVM_SECTION_TYPE_PHY_SKU].data;
 268
 269         regulatory = mvm->trans->cfg->nvm_type == IWL_NVM_SDP ?
 270                 (const __le16 *)sections[NVM_SECTION_TYPE_REGULATORY_SDP].data :
 271                 (const __le16 *)sections[NVM_SECTION_TYPE_REGULATORY].data;
 272
 273         return iwl_parse_nvm_data(mvm->trans, mvm->cfg, mvm->fw, hw, sw, calib,
 274                                   regulatory, mac_override, phy_sku,
 275                                   mvm->fw->valid_tx_ant, mvm->fw->valid_rx_ant);
 276 }
 277
 278 /* Loads the NVM data stored in mvm->nvm_sections into the NIC */
 279 int iwl_mvm_load_nvm_to_nic(struct iwl_mvm *mvm)
 280 {
 281         int i, ret = 0;
 282         struct iwl_nvm_section *sections = mvm->nvm_sections;
 283
 284         IWL_DEBUG_EEPROM(mvm->trans->dev, "'Write to NVM\n");
 285
 286         for (i = 0; i < ARRAY_SIZE(mvm->nvm_sections); i++) {
 287                 if (!mvm->nvm_sections[i].data || !mvm->nvm_sections[i].length)
 288                         continue;
 289                 ret = iwl_nvm_write_section(mvm, i, sections[i].data,
 290                                             sections[i].length);
 291                 if (ret < 0) {
 292                         IWL_ERR(mvm, "iwl_mvm_send_cmd failed: %d\n", ret);
 293                         break;
 294                 }
 295         }
 296         return ret;
 297 }
 298
 299 int iwl_nvm_init(struct iwl_mvm *mvm)
 300 {
 301         int ret, section;
 302         u32 size_read = 0;
 303         u8 *nvm_buffer, *temp;
 304         const char *nvm_file_C = mvm->cfg->default_nvm_file_C_step;
 305
 306         if (WARN_ON_ONCE(mvm->cfg->nvm_hw_section_num >= NVM_MAX_NUM_SECTIONS))
 307                 return -EINVAL;
 308
 309         /* load NVM values from nic */
 310         /* Read From FW NVM */
 311         IWL_DEBUG_EEPROM(mvm->trans->dev, "Read from NVM\n");
 312
 313         nvm_buffer = kmalloc(mvm->trans->trans_cfg->base_params->eeprom_size,
 314                              GFP_KERNEL);
 315         if (!nvm_buffer)
 316                 return -ENOMEM;
 317         for (section = 0; section < NVM_MAX_NUM_SECTIONS; section++) {
 318                 /* we override the constness for initial read */
 319                 ret = iwl_nvm_read_section(mvm, section, nvm_buffer,
 320                                            size_read);
 321                 if (ret == -ENODATA) {
 322                         ret = 0;
 323                         continue;
 324                 }
 325                 if (ret < 0)
 326                         break;
 327                 size_read += ret;
 328                 temp = kmemdup(nvm_buffer, ret, GFP_KERNEL);
 329                 if (!temp) {
 330                         ret = -ENOMEM;
 331                         break;
 332                 }
 333
 334                 iwl_nvm_fixups(mvm->trans->hw_id, section, temp, ret);
 335
 336                 mvm->nvm_sections[section].data = temp;
 337                 mvm->nvm_sections[section].length = ret;
 338
 339 #ifdef CONFIG_IWLWIFI_DEBUGFS
 340                 switch (section) {
 341                 case NVM_SECTION_TYPE_SW:
 342                         mvm->nvm_sw_blob.data = temp;
 343                         mvm->nvm_sw_blob.size  = ret;
 344                         break;
 345                 case NVM_SECTION_TYPE_CALIBRATION:
 346                         mvm->nvm_calib_blob.data = temp;
 347                         mvm->nvm_calib_blob.size  = ret;
 348                         break;
 349                 case NVM_SECTION_TYPE_PRODUCTION:
 350                         mvm->nvm_prod_blob.data = temp;
 351                         mvm->nvm_prod_blob.size  = ret;
 352                         break;
 353                 case NVM_SECTION_TYPE_PHY_SKU:
 354                         mvm->nvm_phy_sku_blob.data = temp;
 355                         mvm->nvm_phy_sku_blob.size  = ret;
 356                         break;
 357                 case NVM_SECTION_TYPE_REGULATORY_SDP:
 358                 case NVM_SECTION_TYPE_REGULATORY:
 359                         mvm->nvm_reg_blob.data = temp;
 360                         mvm->nvm_reg_blob.size  = ret;
 361                         break;
 362                 default:
 363                         if (section == mvm->cfg->nvm_hw_section_num) {
 364                                 mvm->nvm_hw_blob.data = temp;
 365                                 mvm->nvm_hw_blob.size = ret;
 366                                 break;
 367                         }
 368                 }
 369 #endif
 370         }
 371         if (!size_read)
 372                 IWL_ERR(mvm, "OTP is blank\n");
 373         kfree(nvm_buffer);
 374
 375         /* Only if PNVM selected in the mod param - load external NVM  */
 376         if (mvm->nvm_file_name) {
 377                 /* read External NVM file from the mod param */
 378                 ret = iwl_read_external_nvm(mvm->trans, mvm->nvm_file_name,
 379                                             mvm->nvm_sections);
 380                 if (ret) {
 381                         mvm->nvm_file_name = nvm_file_C;
 382
 383                         if ((ret == -EFAULT || ret == -ENOENT) &&
 384                             mvm->nvm_file_name) {
 385                                 /* in case nvm file was failed try again */
 386                                 ret = iwl_read_external_nvm(mvm->trans,
 387                                                             mvm->nvm_file_name,
 388                                                             mvm->nvm_sections);
 389                                 if (ret)
 390                                         return ret;
 391                         } else {
 392                                 return ret;
 393                         }
 394                 }
 395         }
 396
 397         /* parse the relevant nvm sections */
 398         mvm->nvm_data = iwl_parse_nvm_sections(mvm);
 399         if (!mvm->nvm_data)
 400                 return -ENODATA;
 401         IWL_DEBUG_EEPROM(mvm->trans->dev, "nvm version = %x\n",
 402                          mvm->nvm_data->nvm_version);
 403
 404         return ret < 0 ? ret : 0;
 405 }
 406
 407 struct iwl_mcc_update_resp *
 408 iwl_mvm_update_mcc(struct iwl_mvm *mvm, const char *alpha2,
 409                    enum iwl_mcc_source src_id)
 410 {
 411         struct iwl_mcc_update_cmd mcc_update_cmd = {
 412                 .mcc = cpu_to_le16(alpha2[0] << 8 | alpha2[1]),
 413                 .source_id = (u8)src_id,
 414         };
 415         struct iwl_mcc_update_resp *resp_cp;
 416         struct iwl_rx_packet *pkt;
 417         struct iwl_host_cmd cmd = {
 418                 .id = MCC_UPDATE_CMD,
 419                 .flags = CMD_WANT_SKB,
 420                 .data = { &mcc_update_cmd },
 421         };
 422
 423         int ret;
 424         u32 status;
 425         int resp_len, n_channels;
 426         u16 mcc;
 427
 428         if (WARN_ON_ONCE(!iwl_mvm_is_lar_supported(mvm)))
 429                 return ERR_PTR(-EOPNOTSUPP);
 430
 431         cmd.len[0] = sizeof(struct iwl_mcc_update_cmd);
 432
 433         IWL_DEBUG_LAR(mvm, "send MCC update to FW with '%c%c' src = %d\n",
 434                       alpha2[0], alpha2[1], src_id);
 435
 436         ret = iwl_mvm_send_cmd(mvm, &cmd);
 437         if (ret)
 438                 return ERR_PTR(ret);
 439
 440         pkt = cmd.resp_pkt;
 441
 442         /* Extract MCC response */
 443         if (fw_has_capa(&mvm->fw->ucode_capa,
 444                         IWL_UCODE_TLV_CAPA_MCC_UPDATE_11AX_SUPPORT)) {
 445                 struct iwl_mcc_update_resp *mcc_resp = (void *)pkt->data;
 446
 447                 n_channels =  __le32_to_cpu(mcc_resp->n_channels);
 448                 resp_len = sizeof(struct iwl_mcc_update_resp) +
 449                            n_channels * sizeof(__le32);
 450                 resp_cp = kmemdup(mcc_resp, resp_len, GFP_KERNEL);
 451                 if (!resp_cp) {
 452                         resp_cp = ERR_PTR(-ENOMEM);
 453                         goto exit;
 454                 }
 455         } else {
 456                 struct iwl_mcc_update_resp_v3 *mcc_resp_v3 = (void *)pkt->data;
 457
 458                 n_channels =  __le32_to_cpu(mcc_resp_v3->n_channels);
 459                 resp_len = sizeof(struct iwl_mcc_update_resp) +
 460                            n_channels * sizeof(__le32);
 461                 resp_cp = kzalloc(resp_len, GFP_KERNEL);
 462                 if (!resp_cp) {
 463                         resp_cp = ERR_PTR(-ENOMEM);
 464                         goto exit;
 465                 }
 466
 467                 resp_cp->status = mcc_resp_v3->status;
 468                 resp_cp->mcc = mcc_resp_v3->mcc;
 469                 resp_cp->cap = cpu_to_le16(mcc_resp_v3->cap);
 470                 resp_cp->source_id = mcc_resp_v3->source_id;
 471                 resp_cp->time = mcc_resp_v3->time;
 472                 resp_cp->geo_info = mcc_resp_v3->geo_info;
 473                 resp_cp->n_channels = mcc_resp_v3->n_channels;
 474                 memcpy(resp_cp->channels, mcc_resp_v3->channels,
 475                        n_channels * sizeof(__le32));
 476         }
 477
 478         status = le32_to_cpu(resp_cp->status);
 479
 480         mcc = le16_to_cpu(resp_cp->mcc);
 481
 482         /* W/A for a FW/NVM issue - returns 0x00 for the world domain */
 483         if (mcc == 0) {
 484                 mcc = 0x3030;  /* "00" - world */
 485                 resp_cp->mcc = cpu_to_le16(mcc);
 486         }
 487
 488         IWL_DEBUG_LAR(mvm,
 489                       "MCC response status: 0x%x. new MCC: 0x%x ('%c%c') n_chans: %d\n",
 490                       status, mcc, mcc >> 8, mcc & 0xff, n_channels);
 491
 492 exit:
 493         iwl_free_resp(&cmd);
 494         return resp_cp;
 495 }
 496
 497 int iwl_mvm_init_mcc(struct iwl_mvm *mvm)
 498 {
 499         bool tlv_lar;
 500         bool nvm_lar;
 501         int retval;
 502         struct ieee80211_regdomain *regd;
 503         char mcc[3];
 504
 505         if (mvm->cfg->nvm_type == IWL_NVM_EXT) {
 506                 tlv_lar = fw_has_capa(&mvm->fw->ucode_capa,
 507                                       IWL_UCODE_TLV_CAPA_LAR_SUPPORT);
 508                 nvm_lar = mvm->nvm_data->lar_enabled;
 509                 if (tlv_lar != nvm_lar)
 510                         IWL_INFO(mvm,
 511                                  "Conflict between TLV & NVM regarding enabling LAR (TLV = %s NVM =%s)\n",
 512                                  tlv_lar ? "enabled" : "disabled",
 513                                  nvm_lar ? "enabled" : "disabled");
 514         }
 515
 516         if (!iwl_mvm_is_lar_supported(mvm))
 517                 return 0;
 518
 519         /*
 520          * try to replay the last set MCC to FW. If it doesn't exist,
 521          * queue an update to cfg80211 to retrieve the default alpha2 from FW.
 522          */
 523         retval = iwl_mvm_init_fw_regd(mvm);
 524         if (retval != -ENOENT)
 525                 return retval;
 526
 527         /*
 528          * Driver regulatory hint for initial update, this also informs the
 529          * firmware we support wifi location updates.
 530          * Disallow scans that might crash the FW while the LAR regdomain
 531          * is not set.
 532          */
 533         mvm->lar_regdom_set = false;
 534
 535         regd = iwl_mvm_get_current_regdomain(mvm, NULL);
 536         if (IS_ERR_OR_NULL(regd))
 537                 return -EIO;
 538
 539         if (iwl_mvm_is_wifi_mcc_supported(mvm) &&
 540             !iwl_acpi_get_mcc(mvm->dev, mcc)) {
 541                 kfree(regd);
 542                 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, mcc,
 543                                              MCC_SOURCE_BIOS, NULL);
 544                 if (IS_ERR_OR_NULL(regd))
 545                         return -EIO;
 546         }
 547
 548         retval = regulatory_set_wiphy_regd_sync(mvm->hw->wiphy, regd);
 549         kfree(regd);
 550         return retval;
 551 }
 552
 553 void iwl_mvm_rx_chub_update_mcc(struct iwl_mvm *mvm,
 554                                 struct iwl_rx_cmd_buffer *rxb)
 555 {
 556         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 557         struct iwl_mcc_chub_notif *notif = (void *)pkt->data;
 558         enum iwl_mcc_source src;
 559         char mcc[3];
 560         struct ieee80211_regdomain *regd;
 561         int wgds_tbl_idx;
 562
 563         lockdep_assert_held(&mvm->mutex);
 564
 565         if (iwl_mvm_is_vif_assoc(mvm) && notif->source_id == MCC_SOURCE_WIFI) {
 566                 IWL_DEBUG_LAR(mvm, "Ignore mcc update while associated\n");
 567                 return;
 568         }
 569
 570         if (WARN_ON_ONCE(!iwl_mvm_is_lar_supported(mvm)))
 571                 return;
 572
 573         mcc[0] = le16_to_cpu(notif->mcc) >> 8;
 574         mcc[1] = le16_to_cpu(notif->mcc) & 0xff;
 575         mcc[2] = '\0';
 576         src = notif->source_id;
 577
 578         IWL_DEBUG_LAR(mvm,
 579                       "RX: received chub update mcc cmd (mcc '%s' src %d)\n",
 580                       mcc, src);
 581         regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, mcc, src, NULL);
 582         if (IS_ERR_OR_NULL(regd))
 583                 return;
 584
 585         wgds_tbl_idx = iwl_mvm_get_sar_geo_profile(mvm);
 586         if (wgds_tbl_idx < 0)
 587                 IWL_DEBUG_INFO(mvm, "SAR WGDS is disabled (%d)\n",
 588                                wgds_tbl_idx);
 589         else
 590                 IWL_DEBUG_INFO(mvm, "SAR WGDS: geo profile %d is configured\n",
 591                                wgds_tbl_idx);
 592
 593         regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
 594         kfree(regd);
 595 }