1 /******************************************************************************
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.
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10 * Copyright(c) 2016 Intel Deutschland GmbH
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
26 * The full GNU General Public License is included in this distribution
27 * in the file called COPYING.
29 * Contact Information:
30 * Intel Linux Wireless <linuxwifi@intel.com>
31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
36 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
37 * Copyright(c) 2016 Intel Deutschland GmbH
38 * All rights reserved.
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
44 * * Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * * Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in
48 * the documentation and/or other materials provided with the
50 * * Neither the name Intel Corporation nor the names of its
51 * contributors may be used to endorse or promote products derived
52 * from this software without specific prior written permission.
54 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
55 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
56 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
57 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
58 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
59 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
60 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
66 *****************************************************************************/
67 #include <linux/firmware.h>
68 #include <linux/rtnetlink.h>
69 #include "iwl-trans.h"
72 #include "iwl-eeprom-parse.h"
73 #include "iwl-eeprom-read.h"
74 #include "iwl-nvm-parse.h"
77 /* Default NVM size to read */
78 #define IWL_NVM_DEFAULT_CHUNK_SIZE (2*1024)
79 #define IWL_MAX_NVM_SECTION_SIZE 0x1b58
80 #define IWL_MAX_NVM_8000_SECTION_SIZE 0x1ffc
82 #define NVM_WRITE_OPCODE 1
83 #define NVM_READ_OPCODE 0
85 /* load nvm chunk response */
87 READ_NVM_CHUNK_SUCCEED = 0,
88 READ_NVM_CHUNK_NOT_VALID_ADDRESS = 1
92 * prepare the NVM host command w/ the pointers to the nvm buffer
95 static int iwl_nvm_write_chunk(struct iwl_mvm *mvm, u16 section,
96 u16 offset, u16 length, const u8 *data)
98 struct iwl_nvm_access_cmd nvm_access_cmd = {
99 .offset = cpu_to_le16(offset),
100 .length = cpu_to_le16(length),
101 .type = cpu_to_le16(section),
102 .op_code = NVM_WRITE_OPCODE,
104 struct iwl_host_cmd cmd = {
105 .id = NVM_ACCESS_CMD,
106 .len = { sizeof(struct iwl_nvm_access_cmd), length },
107 .flags = CMD_WANT_SKB | CMD_SEND_IN_RFKILL,
108 .data = { &nvm_access_cmd, data },
109 /* data may come from vmalloc, so use _DUP */
110 .dataflags = { 0, IWL_HCMD_DFL_DUP },
112 struct iwl_rx_packet *pkt;
113 struct iwl_nvm_access_resp *nvm_resp;
116 ret = iwl_mvm_send_cmd(mvm, &cmd);
122 IWL_ERR(mvm, "Error in NVM_ACCESS response\n");
125 /* Extract & check NVM write response */
126 nvm_resp = (void *)pkt->data;
127 if (le16_to_cpu(nvm_resp->status) != READ_NVM_CHUNK_SUCCEED) {
129 "NVM access write command failed for section %u (status = 0x%x)\n",
130 section, le16_to_cpu(nvm_resp->status));
138 static int iwl_nvm_read_chunk(struct iwl_mvm *mvm, u16 section,
139 u16 offset, u16 length, u8 *data)
141 struct iwl_nvm_access_cmd nvm_access_cmd = {
142 .offset = cpu_to_le16(offset),
143 .length = cpu_to_le16(length),
144 .type = cpu_to_le16(section),
145 .op_code = NVM_READ_OPCODE,
147 struct iwl_nvm_access_resp *nvm_resp;
148 struct iwl_rx_packet *pkt;
149 struct iwl_host_cmd cmd = {
150 .id = NVM_ACCESS_CMD,
151 .flags = CMD_WANT_SKB | CMD_SEND_IN_RFKILL,
152 .data = { &nvm_access_cmd, },
154 int ret, bytes_read, offset_read;
157 cmd.len[0] = sizeof(struct iwl_nvm_access_cmd);
159 ret = iwl_mvm_send_cmd(mvm, &cmd);
165 /* Extract NVM response */
166 nvm_resp = (void *)pkt->data;
167 ret = le16_to_cpu(nvm_resp->status);
168 bytes_read = le16_to_cpu(nvm_resp->length);
169 offset_read = le16_to_cpu(nvm_resp->offset);
170 resp_data = nvm_resp->data;
173 (ret == READ_NVM_CHUNK_NOT_VALID_ADDRESS)) {
175 * meaning of NOT_VALID_ADDRESS:
176 * driver try to read chunk from address that is
177 * multiple of 2K and got an error since addr is empty.
178 * meaning of (offset != 0): driver already
179 * read valid data from another chunk so this case
182 IWL_DEBUG_EEPROM(mvm->trans->dev,
183 "NVM access command failed on offset 0x%x since that section size is multiple 2K\n",
187 IWL_DEBUG_EEPROM(mvm->trans->dev,
188 "NVM access command failed with status %d (device: %s)\n",
189 ret, mvm->cfg->name);
195 if (offset_read != offset) {
196 IWL_ERR(mvm, "NVM ACCESS response with invalid offset %d\n",
202 /* Write data to NVM */
203 memcpy(data + offset, resp_data, bytes_read);
211 static int iwl_nvm_write_section(struct iwl_mvm *mvm, u16 section,
212 const u8 *data, u16 length)
216 /* copy data in chunks of 2k (and remainder if any) */
218 while (offset < length) {
221 chunk_size = min(IWL_NVM_DEFAULT_CHUNK_SIZE,
224 ret = iwl_nvm_write_chunk(mvm, section, offset,
225 chunk_size, data + offset);
229 offset += chunk_size;
235 static void iwl_mvm_nvm_fixups(struct iwl_mvm *mvm, unsigned int section,
236 u8 *data, unsigned int len)
238 #define IWL_4165_DEVICE_ID 0x5501
239 #define NVM_SKU_CAP_MIMO_DISABLE BIT(5)
241 if (section == NVM_SECTION_TYPE_PHY_SKU &&
242 mvm->trans->hw_id == IWL_4165_DEVICE_ID && data && len >= 5 &&
243 (data[4] & NVM_SKU_CAP_MIMO_DISABLE))
244 /* OTP 0x52 bug work around: it's a 1x1 device */
245 data[3] = ANT_B | (ANT_B << 4);
249 * Reads an NVM section completely.
250 * NICs prior to 7000 family doesn't have a real NVM, but just read
251 * section 0 which is the EEPROM. Because the EEPROM reading is unlimited
252 * by uCode, we need to manually check in this case that we don't
253 * overflow and try to read more than the EEPROM size.
254 * For 7000 family NICs, we supply the maximal size we can read, and
255 * the uCode fills the response with as much data as we can,
256 * without overflowing, so no check is needed.
258 static int iwl_nvm_read_section(struct iwl_mvm *mvm, u16 section,
259 u8 *data, u32 size_read)
261 u16 length, offset = 0;
264 /* Set nvm section read length */
265 length = IWL_NVM_DEFAULT_CHUNK_SIZE;
269 /* Read the NVM until exhausted (reading less than requested) */
270 while (ret == length) {
271 /* Check no memory assumptions fail and cause an overflow */
272 if ((size_read + offset + length) >
273 mvm->cfg->base_params->eeprom_size) {
274 IWL_ERR(mvm, "EEPROM size is too small for NVM\n");
278 ret = iwl_nvm_read_chunk(mvm, section, offset, length, data);
280 IWL_DEBUG_EEPROM(mvm->trans->dev,
281 "Cannot read NVM from section %d offset %d, length %d\n",
282 section, offset, length);
288 iwl_mvm_nvm_fixups(mvm, section, data, offset);
290 IWL_DEBUG_EEPROM(mvm->trans->dev,
291 "NVM section %d read completed\n", section);
295 static struct iwl_nvm_data *
296 iwl_parse_nvm_sections(struct iwl_mvm *mvm)
298 struct iwl_nvm_section *sections = mvm->nvm_sections;
299 const __le16 *hw, *sw, *calib, *regulatory, *mac_override, *phy_sku;
302 /* Checking for required sections */
303 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) {
304 if (!mvm->nvm_sections[NVM_SECTION_TYPE_SW].data ||
305 !mvm->nvm_sections[mvm->cfg->nvm_hw_section_num].data) {
306 IWL_ERR(mvm, "Can't parse empty OTP/NVM sections\n");
310 /* SW and REGULATORY sections are mandatory */
311 if (!mvm->nvm_sections[NVM_SECTION_TYPE_SW].data ||
312 !mvm->nvm_sections[NVM_SECTION_TYPE_REGULATORY].data) {
314 "Can't parse empty family 8000 OTP/NVM sections\n");
317 /* MAC_OVERRIDE or at least HW section must exist */
318 if (!mvm->nvm_sections[mvm->cfg->nvm_hw_section_num].data &&
319 !mvm->nvm_sections[NVM_SECTION_TYPE_MAC_OVERRIDE].data) {
321 "Can't parse mac_address, empty sections\n");
325 /* PHY_SKU section is mandatory in B0 */
326 if (!mvm->nvm_sections[NVM_SECTION_TYPE_PHY_SKU].data) {
328 "Can't parse phy_sku in B0, empty sections\n");
333 if (WARN_ON(!mvm->cfg))
336 hw = (const __le16 *)sections[mvm->cfg->nvm_hw_section_num].data;
337 sw = (const __le16 *)sections[NVM_SECTION_TYPE_SW].data;
338 calib = (const __le16 *)sections[NVM_SECTION_TYPE_CALIBRATION].data;
339 regulatory = (const __le16 *)sections[NVM_SECTION_TYPE_REGULATORY].data;
341 (const __le16 *)sections[NVM_SECTION_TYPE_MAC_OVERRIDE].data;
342 phy_sku = (const __le16 *)sections[NVM_SECTION_TYPE_PHY_SKU].data;
344 lar_enabled = !iwlwifi_mod_params.lar_disable &&
345 fw_has_capa(&mvm->fw->ucode_capa,
346 IWL_UCODE_TLV_CAPA_LAR_SUPPORT);
348 return iwl_parse_nvm_data(mvm->trans, mvm->cfg, hw, sw, calib,
349 regulatory, mac_override, phy_sku,
350 mvm->fw->valid_tx_ant, mvm->fw->valid_rx_ant,
354 #define MAX_NVM_FILE_LEN 16384
357 * Reads external NVM from a file into mvm->nvm_sections
359 * HOW TO CREATE THE NVM FILE FORMAT:
360 * ------------------------------
361 * 1. create hex file, format:
366 * rev - 6 bit (word1)
367 * len - 10 bit (word1)
369 * rsv - 12 bit (word2)
371 * 2. flip 8bits with 8 bits per line to get the right NVM file format
373 * 3. create binary file from the hex file
375 * 4. save as "iNVM_xxx.bin" under /lib/firmware
377 static int iwl_mvm_read_external_nvm(struct iwl_mvm *mvm)
379 int ret, section_size;
381 const struct firmware *fw_entry;
389 int max_section_size;
390 const __le32 *dword_buff;
392 #define NVM_WORD1_LEN(x) (8 * (x & 0x03FF))
393 #define NVM_WORD2_ID(x) (x >> 12)
394 #define NVM_WORD2_LEN_FAMILY_8000(x) (2 * ((x & 0xFF) << 8 | x >> 8))
395 #define NVM_WORD1_ID_FAMILY_8000(x) (x >> 4)
396 #define NVM_HEADER_0 (0x2A504C54)
397 #define NVM_HEADER_1 (0x4E564D2A)
398 #define NVM_HEADER_SIZE (4 * sizeof(u32))
400 IWL_DEBUG_EEPROM(mvm->trans->dev, "Read from external NVM\n");
402 /* Maximal size depends on HW family and step */
403 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
404 max_section_size = IWL_MAX_NVM_SECTION_SIZE;
406 max_section_size = IWL_MAX_NVM_8000_SECTION_SIZE;
409 * Obtain NVM image via request_firmware. Since we already used
410 * reject_firmware_nowait() for the firmware binary load and only
411 * get here after that we assume the NVM request can be satisfied
414 ret = reject_firmware(&fw_entry, mvm->nvm_file_name,
417 IWL_ERR(mvm, "ERROR: %s isn't available %d\n",
418 mvm->nvm_file_name, ret);
422 IWL_INFO(mvm, "Loaded NVM file %s (%zu bytes)\n",
423 mvm->nvm_file_name, fw_entry->size);
425 if (fw_entry->size > MAX_NVM_FILE_LEN) {
426 IWL_ERR(mvm, "NVM file too large\n");
431 eof = fw_entry->data + fw_entry->size;
432 dword_buff = (__le32 *)fw_entry->data;
434 /* some NVM file will contain a header.
435 * The header is identified by 2 dwords header as follow:
436 * dword[0] = 0x2A504C54
437 * dword[1] = 0x4E564D2A
439 * This header must be skipped when providing the NVM data to the FW.
441 if (fw_entry->size > NVM_HEADER_SIZE &&
442 dword_buff[0] == cpu_to_le32(NVM_HEADER_0) &&
443 dword_buff[1] == cpu_to_le32(NVM_HEADER_1)) {
444 file_sec = (void *)(fw_entry->data + NVM_HEADER_SIZE);
445 IWL_INFO(mvm, "NVM Version %08X\n", le32_to_cpu(dword_buff[2]));
446 IWL_INFO(mvm, "NVM Manufacturing date %08X\n",
447 le32_to_cpu(dword_buff[3]));
449 /* nvm file validation, dword_buff[2] holds the file version */
450 if ((CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_C_STEP &&
451 le32_to_cpu(dword_buff[2]) < 0xE4A) ||
452 (CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP &&
453 le32_to_cpu(dword_buff[2]) >= 0xE4A)) {
458 file_sec = (void *)fw_entry->data;
462 if (file_sec->data > eof) {
464 "ERROR - NVM file too short for section header\n");
469 /* check for EOF marker */
470 if (!file_sec->word1 && !file_sec->word2) {
475 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) {
477 2 * NVM_WORD1_LEN(le16_to_cpu(file_sec->word1));
478 section_id = NVM_WORD2_ID(le16_to_cpu(file_sec->word2));
480 section_size = 2 * NVM_WORD2_LEN_FAMILY_8000(
481 le16_to_cpu(file_sec->word2));
482 section_id = NVM_WORD1_ID_FAMILY_8000(
483 le16_to_cpu(file_sec->word1));
486 if (section_size > max_section_size) {
487 IWL_ERR(mvm, "ERROR - section too large (%d)\n",
494 IWL_ERR(mvm, "ERROR - section empty\n");
499 if (file_sec->data + section_size > eof) {
501 "ERROR - NVM file too short for section (%d bytes)\n",
507 if (WARN(section_id >= NVM_MAX_NUM_SECTIONS,
508 "Invalid NVM section ID %d\n", section_id)) {
513 temp = kmemdup(file_sec->data, section_size, GFP_KERNEL);
519 iwl_mvm_nvm_fixups(mvm, section_id, temp, section_size);
521 kfree(mvm->nvm_sections[section_id].data);
522 mvm->nvm_sections[section_id].data = temp;
523 mvm->nvm_sections[section_id].length = section_size;
525 /* advance to the next section */
526 file_sec = (void *)(file_sec->data + section_size);
529 release_firmware(fw_entry);
533 /* Loads the NVM data stored in mvm->nvm_sections into the NIC */
534 int iwl_mvm_load_nvm_to_nic(struct iwl_mvm *mvm)
537 struct iwl_nvm_section *sections = mvm->nvm_sections;
539 IWL_DEBUG_EEPROM(mvm->trans->dev, "'Write to NVM\n");
541 for (i = 0; i < ARRAY_SIZE(mvm->nvm_sections); i++) {
542 if (!mvm->nvm_sections[i].data || !mvm->nvm_sections[i].length)
544 ret = iwl_nvm_write_section(mvm, i, sections[i].data,
547 IWL_ERR(mvm, "iwl_mvm_send_cmd failed: %d\n", ret);
554 int iwl_nvm_init(struct iwl_mvm *mvm, bool read_nvm_from_nic)
558 u8 *nvm_buffer, *temp;
559 const char *nvm_file_B = mvm->cfg->default_nvm_file_B_step;
560 const char *nvm_file_C = mvm->cfg->default_nvm_file_C_step;
562 if (WARN_ON_ONCE(mvm->cfg->nvm_hw_section_num >= NVM_MAX_NUM_SECTIONS))
565 /* load NVM values from nic */
566 if (read_nvm_from_nic) {
567 /* Read From FW NVM */
568 IWL_DEBUG_EEPROM(mvm->trans->dev, "Read from NVM\n");
570 nvm_buffer = kmalloc(mvm->cfg->base_params->eeprom_size,
574 for (section = 0; section < NVM_MAX_NUM_SECTIONS; section++) {
575 /* we override the constness for initial read */
576 ret = iwl_nvm_read_section(mvm, section, nvm_buffer,
581 temp = kmemdup(nvm_buffer, ret, GFP_KERNEL);
587 iwl_mvm_nvm_fixups(mvm, section, temp, ret);
589 mvm->nvm_sections[section].data = temp;
590 mvm->nvm_sections[section].length = ret;
592 #ifdef CONFIG_IWLWIFI_DEBUGFS
594 case NVM_SECTION_TYPE_SW:
595 mvm->nvm_sw_blob.data = temp;
596 mvm->nvm_sw_blob.size = ret;
598 case NVM_SECTION_TYPE_CALIBRATION:
599 mvm->nvm_calib_blob.data = temp;
600 mvm->nvm_calib_blob.size = ret;
602 case NVM_SECTION_TYPE_PRODUCTION:
603 mvm->nvm_prod_blob.data = temp;
604 mvm->nvm_prod_blob.size = ret;
606 case NVM_SECTION_TYPE_PHY_SKU:
607 mvm->nvm_phy_sku_blob.data = temp;
608 mvm->nvm_phy_sku_blob.size = ret;
611 if (section == mvm->cfg->nvm_hw_section_num) {
612 mvm->nvm_hw_blob.data = temp;
613 mvm->nvm_hw_blob.size = ret;
620 IWL_ERR(mvm, "OTP is blank\n");
624 /* Only if PNVM selected in the mod param - load external NVM */
625 if (mvm->nvm_file_name) {
626 /* read External NVM file from the mod param */
627 ret = iwl_mvm_read_external_nvm(mvm);
629 /* choose the nvm_file name according to the
632 if (CSR_HW_REV_STEP(mvm->trans->hw_rev) ==
634 mvm->nvm_file_name = nvm_file_B;
636 mvm->nvm_file_name = nvm_file_C;
638 if ((ret == -EFAULT || ret == -ENOENT) &&
639 mvm->nvm_file_name) {
640 /* in case nvm file was failed try again */
641 ret = iwl_mvm_read_external_nvm(mvm);
650 /* parse the relevant nvm sections */
651 mvm->nvm_data = iwl_parse_nvm_sections(mvm);
654 IWL_DEBUG_EEPROM(mvm->trans->dev, "nvm version = %x\n",
655 mvm->nvm_data->nvm_version);
660 struct iwl_mcc_update_resp *
661 iwl_mvm_update_mcc(struct iwl_mvm *mvm, const char *alpha2,
662 enum iwl_mcc_source src_id)
664 struct iwl_mcc_update_cmd mcc_update_cmd = {
665 .mcc = cpu_to_le16(alpha2[0] << 8 | alpha2[1]),
666 .source_id = (u8)src_id,
668 struct iwl_mcc_update_resp *resp_cp;
669 struct iwl_rx_packet *pkt;
670 struct iwl_host_cmd cmd = {
671 .id = MCC_UPDATE_CMD,
672 .flags = CMD_WANT_SKB,
673 .data = { &mcc_update_cmd },
678 int resp_len, n_channels;
680 bool resp_v2 = fw_has_capa(&mvm->fw->ucode_capa,
681 IWL_UCODE_TLV_CAPA_LAR_SUPPORT_V2);
683 if (WARN_ON_ONCE(!iwl_mvm_is_lar_supported(mvm)))
684 return ERR_PTR(-EOPNOTSUPP);
686 cmd.len[0] = sizeof(struct iwl_mcc_update_cmd);
688 cmd.len[0] = sizeof(struct iwl_mcc_update_cmd_v1);
690 IWL_DEBUG_LAR(mvm, "send MCC update to FW with '%c%c' src = %d\n",
691 alpha2[0], alpha2[1], src_id);
693 ret = iwl_mvm_send_cmd(mvm, &cmd);
699 /* Extract MCC response */
701 struct iwl_mcc_update_resp *mcc_resp = (void *)pkt->data;
703 n_channels = __le32_to_cpu(mcc_resp->n_channels);
704 resp_len = sizeof(struct iwl_mcc_update_resp) +
705 n_channels * sizeof(__le32);
706 resp_cp = kmemdup(mcc_resp, resp_len, GFP_KERNEL);
708 struct iwl_mcc_update_resp_v1 *mcc_resp_v1 = (void *)pkt->data;
710 n_channels = __le32_to_cpu(mcc_resp_v1->n_channels);
711 resp_len = sizeof(struct iwl_mcc_update_resp) +
712 n_channels * sizeof(__le32);
713 resp_cp = kzalloc(resp_len, GFP_KERNEL);
716 resp_cp->status = mcc_resp_v1->status;
717 resp_cp->mcc = mcc_resp_v1->mcc;
718 resp_cp->cap = mcc_resp_v1->cap;
719 resp_cp->source_id = mcc_resp_v1->source_id;
720 resp_cp->n_channels = mcc_resp_v1->n_channels;
721 memcpy(resp_cp->channels, mcc_resp_v1->channels,
722 n_channels * sizeof(__le32));
731 status = le32_to_cpu(resp_cp->status);
733 mcc = le16_to_cpu(resp_cp->mcc);
735 /* W/A for a FW/NVM issue - returns 0x00 for the world domain */
737 mcc = 0x3030; /* "00" - world */
738 resp_cp->mcc = cpu_to_le16(mcc);
742 "MCC response status: 0x%x. new MCC: 0x%x ('%c%c') n_chans: %d\n",
743 status, mcc, mcc >> 8, mcc & 0xff, n_channels);
752 int iwl_mvm_init_mcc(struct iwl_mvm *mvm)
757 struct ieee80211_regdomain *regd;
760 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000) {
761 tlv_lar = fw_has_capa(&mvm->fw->ucode_capa,
762 IWL_UCODE_TLV_CAPA_LAR_SUPPORT);
763 nvm_lar = mvm->nvm_data->lar_enabled;
764 if (tlv_lar != nvm_lar)
766 "Conflict between TLV & NVM regarding enabling LAR (TLV = %s NVM =%s)\n",
767 tlv_lar ? "enabled" : "disabled",
768 nvm_lar ? "enabled" : "disabled");
771 if (!iwl_mvm_is_lar_supported(mvm))
775 * try to replay the last set MCC to FW. If it doesn't exist,
776 * queue an update to cfg80211 to retrieve the default alpha2 from FW.
778 retval = iwl_mvm_init_fw_regd(mvm);
779 if (retval != -ENOENT)
783 * Driver regulatory hint for initial update, this also informs the
784 * firmware we support wifi location updates.
785 * Disallow scans that might crash the FW while the LAR regdomain
788 mvm->lar_regdom_set = false;
790 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
791 if (IS_ERR_OR_NULL(regd))
794 if (iwl_mvm_is_wifi_mcc_supported(mvm) &&
795 !iwl_get_bios_mcc(mvm->dev, mcc)) {
797 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, mcc,
798 MCC_SOURCE_BIOS, NULL);
799 if (IS_ERR_OR_NULL(regd))
803 retval = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
808 void iwl_mvm_rx_chub_update_mcc(struct iwl_mvm *mvm,
809 struct iwl_rx_cmd_buffer *rxb)
811 struct iwl_rx_packet *pkt = rxb_addr(rxb);
812 struct iwl_mcc_chub_notif *notif = (void *)pkt->data;
813 enum iwl_mcc_source src;
815 struct ieee80211_regdomain *regd;
817 lockdep_assert_held(&mvm->mutex);
819 if (WARN_ON_ONCE(!iwl_mvm_is_lar_supported(mvm)))
822 mcc[0] = notif->mcc >> 8;
823 mcc[1] = notif->mcc & 0xff;
825 src = notif->source_id;
828 "RX: received chub update mcc cmd (mcc '%s' src %d)\n",
830 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, mcc, src, NULL);
831 if (IS_ERR_OR_NULL(regd))
834 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);