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 - 2017 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 - 2017 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_EXT_NVM_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);
121 /* Extract & check NVM write response */
122 nvm_resp = (void *)pkt->data;
123 if (le16_to_cpu(nvm_resp->status) != READ_NVM_CHUNK_SUCCEED) {
125 "NVM access write command failed for section %u (status = 0x%x)\n",
126 section, le16_to_cpu(nvm_resp->status));
134 static int iwl_nvm_read_chunk(struct iwl_mvm *mvm, u16 section,
135 u16 offset, u16 length, u8 *data)
137 struct iwl_nvm_access_cmd nvm_access_cmd = {
138 .offset = cpu_to_le16(offset),
139 .length = cpu_to_le16(length),
140 .type = cpu_to_le16(section),
141 .op_code = NVM_READ_OPCODE,
143 struct iwl_nvm_access_resp *nvm_resp;
144 struct iwl_rx_packet *pkt;
145 struct iwl_host_cmd cmd = {
146 .id = NVM_ACCESS_CMD,
147 .flags = CMD_WANT_SKB | CMD_SEND_IN_RFKILL,
148 .data = { &nvm_access_cmd, },
150 int ret, bytes_read, offset_read;
153 cmd.len[0] = sizeof(struct iwl_nvm_access_cmd);
155 ret = iwl_mvm_send_cmd(mvm, &cmd);
161 /* Extract NVM response */
162 nvm_resp = (void *)pkt->data;
163 ret = le16_to_cpu(nvm_resp->status);
164 bytes_read = le16_to_cpu(nvm_resp->length);
165 offset_read = le16_to_cpu(nvm_resp->offset);
166 resp_data = nvm_resp->data;
169 (ret == READ_NVM_CHUNK_NOT_VALID_ADDRESS)) {
171 * meaning of NOT_VALID_ADDRESS:
172 * driver try to read chunk from address that is
173 * multiple of 2K and got an error since addr is empty.
174 * meaning of (offset != 0): driver already
175 * read valid data from another chunk so this case
178 IWL_DEBUG_EEPROM(mvm->trans->dev,
179 "NVM access command failed on offset 0x%x since that section size is multiple 2K\n",
183 IWL_DEBUG_EEPROM(mvm->trans->dev,
184 "NVM access command failed with status %d (device: %s)\n",
185 ret, mvm->cfg->name);
191 if (offset_read != offset) {
192 IWL_ERR(mvm, "NVM ACCESS response with invalid offset %d\n",
198 /* Write data to NVM */
199 memcpy(data + offset, resp_data, bytes_read);
207 static int iwl_nvm_write_section(struct iwl_mvm *mvm, u16 section,
208 const u8 *data, u16 length)
212 /* copy data in chunks of 2k (and remainder if any) */
214 while (offset < length) {
217 chunk_size = min(IWL_NVM_DEFAULT_CHUNK_SIZE,
220 ret = iwl_nvm_write_chunk(mvm, section, offset,
221 chunk_size, data + offset);
225 offset += chunk_size;
231 static void iwl_mvm_nvm_fixups(struct iwl_mvm *mvm, unsigned int section,
232 u8 *data, unsigned int len)
234 #define IWL_4165_DEVICE_ID 0x5501
235 #define NVM_SKU_CAP_MIMO_DISABLE BIT(5)
237 if (section == NVM_SECTION_TYPE_PHY_SKU &&
238 mvm->trans->hw_id == IWL_4165_DEVICE_ID && data && len >= 5 &&
239 (data[4] & NVM_SKU_CAP_MIMO_DISABLE))
240 /* OTP 0x52 bug work around: it's a 1x1 device */
241 data[3] = ANT_B | (ANT_B << 4);
245 * Reads an NVM section completely.
246 * NICs prior to 7000 family doesn't have a real NVM, but just read
247 * section 0 which is the EEPROM. Because the EEPROM reading is unlimited
248 * by uCode, we need to manually check in this case that we don't
249 * overflow and try to read more than the EEPROM size.
250 * For 7000 family NICs, we supply the maximal size we can read, and
251 * the uCode fills the response with as much data as we can,
252 * without overflowing, so no check is needed.
254 static int iwl_nvm_read_section(struct iwl_mvm *mvm, u16 section,
255 u8 *data, u32 size_read)
257 u16 length, offset = 0;
260 /* Set nvm section read length */
261 length = IWL_NVM_DEFAULT_CHUNK_SIZE;
265 /* Read the NVM until exhausted (reading less than requested) */
266 while (ret == length) {
267 /* Check no memory assumptions fail and cause an overflow */
268 if ((size_read + offset + length) >
269 mvm->cfg->base_params->eeprom_size) {
270 IWL_ERR(mvm, "EEPROM size is too small for NVM\n");
274 ret = iwl_nvm_read_chunk(mvm, section, offset, length, data);
276 IWL_DEBUG_EEPROM(mvm->trans->dev,
277 "Cannot read NVM from section %d offset %d, length %d\n",
278 section, offset, length);
284 iwl_mvm_nvm_fixups(mvm, section, data, offset);
286 IWL_DEBUG_EEPROM(mvm->trans->dev,
287 "NVM section %d read completed\n", section);
291 static struct iwl_nvm_data *
292 iwl_parse_nvm_sections(struct iwl_mvm *mvm)
294 struct iwl_nvm_section *sections = mvm->nvm_sections;
296 const __le16 *sw, *calib, *regulatory, *mac_override, *phy_sku;
300 /* Checking for required sections */
301 if (mvm->trans->cfg->nvm_type == IWL_NVM) {
302 if (!mvm->nvm_sections[NVM_SECTION_TYPE_SW].data ||
303 !mvm->nvm_sections[mvm->cfg->nvm_hw_section_num].data) {
304 IWL_ERR(mvm, "Can't parse empty OTP/NVM sections\n");
308 if (mvm->trans->cfg->nvm_type == IWL_NVM_SDP)
309 regulatory_type = NVM_SECTION_TYPE_REGULATORY_SDP;
311 regulatory_type = NVM_SECTION_TYPE_REGULATORY;
313 /* SW and REGULATORY sections are mandatory */
314 if (!mvm->nvm_sections[NVM_SECTION_TYPE_SW].data ||
315 !mvm->nvm_sections[regulatory_type].data) {
317 "Can't parse empty family 8000 OTP/NVM sections\n");
320 /* MAC_OVERRIDE or at least HW section must exist */
321 if (!mvm->nvm_sections[mvm->cfg->nvm_hw_section_num].data &&
322 !mvm->nvm_sections[NVM_SECTION_TYPE_MAC_OVERRIDE].data) {
324 "Can't parse mac_address, empty sections\n");
328 /* PHY_SKU section is mandatory in B0 */
329 if (mvm->trans->cfg->nvm_type == IWL_NVM_EXT &&
330 !mvm->nvm_sections[NVM_SECTION_TYPE_PHY_SKU].data) {
332 "Can't parse phy_sku in B0, empty sections\n");
337 hw = (const __be16 *)sections[mvm->cfg->nvm_hw_section_num].data;
338 sw = (const __le16 *)sections[NVM_SECTION_TYPE_SW].data;
339 calib = (const __le16 *)sections[NVM_SECTION_TYPE_CALIBRATION].data;
341 (const __le16 *)sections[NVM_SECTION_TYPE_MAC_OVERRIDE].data;
342 phy_sku = (const __le16 *)sections[NVM_SECTION_TYPE_PHY_SKU].data;
344 regulatory = mvm->trans->cfg->nvm_type == IWL_NVM_SDP ?
345 (const __le16 *)sections[NVM_SECTION_TYPE_REGULATORY_SDP].data :
346 (const __le16 *)sections[NVM_SECTION_TYPE_REGULATORY].data;
348 lar_enabled = !iwlwifi_mod_params.lar_disable &&
349 fw_has_capa(&mvm->fw->ucode_capa,
350 IWL_UCODE_TLV_CAPA_LAR_SUPPORT);
352 return iwl_parse_nvm_data(mvm->trans, mvm->cfg, hw, sw, calib,
353 regulatory, mac_override, phy_sku,
354 mvm->fw->valid_tx_ant, mvm->fw->valid_rx_ant,
358 #define MAX_NVM_FILE_LEN 16384
361 * Reads external NVM from a file into mvm->nvm_sections
363 * HOW TO CREATE THE NVM FILE FORMAT:
364 * ------------------------------
365 * 1. create hex file, format:
370 * rev - 6 bit (word1)
371 * len - 10 bit (word1)
373 * rsv - 12 bit (word2)
375 * 2. flip 8bits with 8 bits per line to get the right NVM file format
377 * 3. create binary file from the hex file
379 * 4. save as "iNVM_xxx.bin" under /lib/firmware
381 int iwl_mvm_read_external_nvm(struct iwl_mvm *mvm)
383 int ret, section_size;
385 const struct firmware *fw_entry;
393 int max_section_size;
394 const __le32 *dword_buff;
396 #define NVM_WORD1_LEN(x) (8 * (x & 0x03FF))
397 #define NVM_WORD2_ID(x) (x >> 12)
398 #define EXT_NVM_WORD2_LEN(x) (2 * (((x) & 0xFF) << 8 | (x) >> 8))
399 #define EXT_NVM_WORD1_ID(x) ((x) >> 4)
400 #define NVM_HEADER_0 (0x2A504C54)
401 #define NVM_HEADER_1 (0x4E564D2A)
402 #define NVM_HEADER_SIZE (4 * sizeof(u32))
404 IWL_DEBUG_EEPROM(mvm->trans->dev, "Read from external NVM\n");
406 /* Maximal size depends on NVM version */
407 if (mvm->trans->cfg->nvm_type != IWL_NVM_EXT)
408 max_section_size = IWL_MAX_NVM_SECTION_SIZE;
410 max_section_size = IWL_MAX_EXT_NVM_SECTION_SIZE;
413 * Obtain NVM image via request_firmware. Since we already used
414 * reject_firmware_nowait() for the firmware binary load and only
415 * get here after that we assume the NVM request can be satisfied
418 ret = reject_firmware(&fw_entry, mvm->nvm_file_name,
421 IWL_ERR(mvm, "ERROR: %s isn't available %d\n",
422 mvm->nvm_file_name, ret);
426 IWL_INFO(mvm, "Loaded NVM file %s (%zu bytes)\n",
427 mvm->nvm_file_name, fw_entry->size);
429 if (fw_entry->size > MAX_NVM_FILE_LEN) {
430 IWL_ERR(mvm, "NVM file too large\n");
435 eof = fw_entry->data + fw_entry->size;
436 dword_buff = (__le32 *)fw_entry->data;
438 /* some NVM file will contain a header.
439 * The header is identified by 2 dwords header as follow:
440 * dword[0] = 0x2A504C54
441 * dword[1] = 0x4E564D2A
443 * This header must be skipped when providing the NVM data to the FW.
445 if (fw_entry->size > NVM_HEADER_SIZE &&
446 dword_buff[0] == cpu_to_le32(NVM_HEADER_0) &&
447 dword_buff[1] == cpu_to_le32(NVM_HEADER_1)) {
448 file_sec = (void *)(fw_entry->data + NVM_HEADER_SIZE);
449 IWL_INFO(mvm, "NVM Version %08X\n", le32_to_cpu(dword_buff[2]));
450 IWL_INFO(mvm, "NVM Manufacturing date %08X\n",
451 le32_to_cpu(dword_buff[3]));
453 /* nvm file validation, dword_buff[2] holds the file version */
454 if (mvm->trans->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
455 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_C_STEP &&
456 le32_to_cpu(dword_buff[2]) < 0xE4A) {
461 file_sec = (void *)fw_entry->data;
465 if (file_sec->data > eof) {
467 "ERROR - NVM file too short for section header\n");
472 /* check for EOF marker */
473 if (!file_sec->word1 && !file_sec->word2) {
478 if (mvm->trans->cfg->nvm_type != IWL_NVM_EXT) {
480 2 * NVM_WORD1_LEN(le16_to_cpu(file_sec->word1));
481 section_id = NVM_WORD2_ID(le16_to_cpu(file_sec->word2));
483 section_size = 2 * EXT_NVM_WORD2_LEN(
484 le16_to_cpu(file_sec->word2));
485 section_id = EXT_NVM_WORD1_ID(
486 le16_to_cpu(file_sec->word1));
489 if (section_size > max_section_size) {
490 IWL_ERR(mvm, "ERROR - section too large (%d)\n",
497 IWL_ERR(mvm, "ERROR - section empty\n");
502 if (file_sec->data + section_size > eof) {
504 "ERROR - NVM file too short for section (%d bytes)\n",
510 if (WARN(section_id >= NVM_MAX_NUM_SECTIONS,
511 "Invalid NVM section ID %d\n", section_id)) {
516 temp = kmemdup(file_sec->data, section_size, GFP_KERNEL);
522 iwl_mvm_nvm_fixups(mvm, section_id, temp, section_size);
524 kfree(mvm->nvm_sections[section_id].data);
525 mvm->nvm_sections[section_id].data = temp;
526 mvm->nvm_sections[section_id].length = section_size;
528 /* advance to the next section */
529 file_sec = (void *)(file_sec->data + section_size);
532 release_firmware(fw_entry);
536 /* Loads the NVM data stored in mvm->nvm_sections into the NIC */
537 int iwl_mvm_load_nvm_to_nic(struct iwl_mvm *mvm)
540 struct iwl_nvm_section *sections = mvm->nvm_sections;
542 IWL_DEBUG_EEPROM(mvm->trans->dev, "'Write to NVM\n");
544 for (i = 0; i < ARRAY_SIZE(mvm->nvm_sections); i++) {
545 if (!mvm->nvm_sections[i].data || !mvm->nvm_sections[i].length)
547 ret = iwl_nvm_write_section(mvm, i, sections[i].data,
550 IWL_ERR(mvm, "iwl_mvm_send_cmd failed: %d\n", ret);
557 int iwl_nvm_init(struct iwl_mvm *mvm)
561 u8 *nvm_buffer, *temp;
562 const char *nvm_file_C = mvm->cfg->default_nvm_file_C_step;
564 if (WARN_ON_ONCE(mvm->cfg->nvm_hw_section_num >= NVM_MAX_NUM_SECTIONS))
567 /* load NVM values from nic */
568 /* Read From FW NVM */
569 IWL_DEBUG_EEPROM(mvm->trans->dev, "Read from NVM\n");
571 nvm_buffer = kmalloc(mvm->cfg->base_params->eeprom_size,
575 for (section = 0; section < NVM_MAX_NUM_SECTIONS; section++) {
576 /* we override the constness for initial read */
577 ret = iwl_nvm_read_section(mvm, section, nvm_buffer,
582 temp = kmemdup(nvm_buffer, ret, GFP_KERNEL);
588 iwl_mvm_nvm_fixups(mvm, section, temp, ret);
590 mvm->nvm_sections[section].data = temp;
591 mvm->nvm_sections[section].length = ret;
593 #ifdef CONFIG_IWLWIFI_DEBUGFS
595 case NVM_SECTION_TYPE_SW:
596 mvm->nvm_sw_blob.data = temp;
597 mvm->nvm_sw_blob.size = ret;
599 case NVM_SECTION_TYPE_CALIBRATION:
600 mvm->nvm_calib_blob.data = temp;
601 mvm->nvm_calib_blob.size = ret;
603 case NVM_SECTION_TYPE_PRODUCTION:
604 mvm->nvm_prod_blob.data = temp;
605 mvm->nvm_prod_blob.size = ret;
607 case NVM_SECTION_TYPE_PHY_SKU:
608 mvm->nvm_phy_sku_blob.data = temp;
609 mvm->nvm_phy_sku_blob.size = ret;
612 if (section == mvm->cfg->nvm_hw_section_num) {
613 mvm->nvm_hw_blob.data = temp;
614 mvm->nvm_hw_blob.size = ret;
621 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 mvm->nvm_file_name = nvm_file_C;
631 if ((ret == -EFAULT || ret == -ENOENT) &&
632 mvm->nvm_file_name) {
633 /* in case nvm file was failed try again */
634 ret = iwl_mvm_read_external_nvm(mvm);
643 /* parse the relevant nvm sections */
644 mvm->nvm_data = iwl_parse_nvm_sections(mvm);
647 IWL_DEBUG_EEPROM(mvm->trans->dev, "nvm version = %x\n",
648 mvm->nvm_data->nvm_version);
653 struct iwl_mcc_update_resp *
654 iwl_mvm_update_mcc(struct iwl_mvm *mvm, const char *alpha2,
655 enum iwl_mcc_source src_id)
657 struct iwl_mcc_update_cmd mcc_update_cmd = {
658 .mcc = cpu_to_le16(alpha2[0] << 8 | alpha2[1]),
659 .source_id = (u8)src_id,
661 struct iwl_mcc_update_resp *resp_cp;
662 struct iwl_rx_packet *pkt;
663 struct iwl_host_cmd cmd = {
664 .id = MCC_UPDATE_CMD,
665 .flags = CMD_WANT_SKB,
666 .data = { &mcc_update_cmd },
671 int resp_len, n_channels;
673 bool resp_v2 = fw_has_capa(&mvm->fw->ucode_capa,
674 IWL_UCODE_TLV_CAPA_LAR_SUPPORT_V2);
676 if (WARN_ON_ONCE(!iwl_mvm_is_lar_supported(mvm)))
677 return ERR_PTR(-EOPNOTSUPP);
679 cmd.len[0] = sizeof(struct iwl_mcc_update_cmd);
681 cmd.len[0] = sizeof(struct iwl_mcc_update_cmd_v1);
683 IWL_DEBUG_LAR(mvm, "send MCC update to FW with '%c%c' src = %d\n",
684 alpha2[0], alpha2[1], src_id);
686 ret = iwl_mvm_send_cmd(mvm, &cmd);
692 /* Extract MCC response */
694 struct iwl_mcc_update_resp *mcc_resp = (void *)pkt->data;
696 n_channels = __le32_to_cpu(mcc_resp->n_channels);
697 resp_len = sizeof(struct iwl_mcc_update_resp) +
698 n_channels * sizeof(__le32);
699 resp_cp = kmemdup(mcc_resp, resp_len, GFP_KERNEL);
701 resp_cp = ERR_PTR(-ENOMEM);
705 struct iwl_mcc_update_resp_v1 *mcc_resp_v1 = (void *)pkt->data;
707 n_channels = __le32_to_cpu(mcc_resp_v1->n_channels);
708 resp_len = sizeof(struct iwl_mcc_update_resp) +
709 n_channels * sizeof(__le32);
710 resp_cp = kzalloc(resp_len, GFP_KERNEL);
712 resp_cp = ERR_PTR(-ENOMEM);
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));
725 status = le32_to_cpu(resp_cp->status);
727 mcc = le16_to_cpu(resp_cp->mcc);
729 /* W/A for a FW/NVM issue - returns 0x00 for the world domain */
731 mcc = 0x3030; /* "00" - world */
732 resp_cp->mcc = cpu_to_le16(mcc);
736 "MCC response status: 0x%x. new MCC: 0x%x ('%c%c') n_chans: %d\n",
737 status, mcc, mcc >> 8, mcc & 0xff, n_channels);
744 int iwl_mvm_init_mcc(struct iwl_mvm *mvm)
749 struct ieee80211_regdomain *regd;
752 if (mvm->cfg->nvm_type == IWL_NVM_EXT) {
753 tlv_lar = fw_has_capa(&mvm->fw->ucode_capa,
754 IWL_UCODE_TLV_CAPA_LAR_SUPPORT);
755 nvm_lar = mvm->nvm_data->lar_enabled;
756 if (tlv_lar != nvm_lar)
758 "Conflict between TLV & NVM regarding enabling LAR (TLV = %s NVM =%s)\n",
759 tlv_lar ? "enabled" : "disabled",
760 nvm_lar ? "enabled" : "disabled");
763 if (!iwl_mvm_is_lar_supported(mvm))
767 * try to replay the last set MCC to FW. If it doesn't exist,
768 * queue an update to cfg80211 to retrieve the default alpha2 from FW.
770 retval = iwl_mvm_init_fw_regd(mvm);
771 if (retval != -ENOENT)
775 * Driver regulatory hint for initial update, this also informs the
776 * firmware we support wifi location updates.
777 * Disallow scans that might crash the FW while the LAR regdomain
780 mvm->lar_regdom_set = false;
782 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
783 if (IS_ERR_OR_NULL(regd))
786 if (iwl_mvm_is_wifi_mcc_supported(mvm) &&
787 !iwl_get_bios_mcc(mvm->dev, mcc)) {
789 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, mcc,
790 MCC_SOURCE_BIOS, NULL);
791 if (IS_ERR_OR_NULL(regd))
795 retval = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
800 void iwl_mvm_rx_chub_update_mcc(struct iwl_mvm *mvm,
801 struct iwl_rx_cmd_buffer *rxb)
803 struct iwl_rx_packet *pkt = rxb_addr(rxb);
804 struct iwl_mcc_chub_notif *notif = (void *)pkt->data;
805 enum iwl_mcc_source src;
807 struct ieee80211_regdomain *regd;
809 lockdep_assert_held(&mvm->mutex);
811 if (iwl_mvm_is_vif_assoc(mvm) && notif->source_id == MCC_SOURCE_WIFI) {
812 IWL_DEBUG_LAR(mvm, "Ignore mcc update while associated\n");
816 if (WARN_ON_ONCE(!iwl_mvm_is_lar_supported(mvm)))
819 mcc[0] = le16_to_cpu(notif->mcc) >> 8;
820 mcc[1] = le16_to_cpu(notif->mcc) & 0xff;
822 src = notif->source_id;
825 "RX: received chub update mcc cmd (mcc '%s' src %d)\n",
827 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, mcc, src, NULL);
828 if (IS_ERR_OR_NULL(regd))
831 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);