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
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.
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.
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,
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
36 * All rights reserved.
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
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
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.
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.
64 *****************************************************************************/
65 #include <linux/firmware.h>
66 #include <linux/rtnetlink.h>
67 #include <linux/pci.h>
68 #include <linux/acpi.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_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 },
113 return iwl_mvm_send_cmd(mvm, &cmd);
116 static int iwl_nvm_read_chunk(struct iwl_mvm *mvm, u16 section,
117 u16 offset, u16 length, u8 *data)
119 struct iwl_nvm_access_cmd nvm_access_cmd = {
120 .offset = cpu_to_le16(offset),
121 .length = cpu_to_le16(length),
122 .type = cpu_to_le16(section),
123 .op_code = NVM_READ_OPCODE,
125 struct iwl_nvm_access_resp *nvm_resp;
126 struct iwl_rx_packet *pkt;
127 struct iwl_host_cmd cmd = {
128 .id = NVM_ACCESS_CMD,
129 .flags = CMD_WANT_SKB | CMD_SEND_IN_RFKILL,
130 .data = { &nvm_access_cmd, },
132 int ret, bytes_read, offset_read;
135 cmd.len[0] = sizeof(struct iwl_nvm_access_cmd);
137 ret = iwl_mvm_send_cmd(mvm, &cmd);
143 /* Extract NVM response */
144 nvm_resp = (void *)pkt->data;
145 ret = le16_to_cpu(nvm_resp->status);
146 bytes_read = le16_to_cpu(nvm_resp->length);
147 offset_read = le16_to_cpu(nvm_resp->offset);
148 resp_data = nvm_resp->data;
151 (ret == READ_NVM_CHUNK_NOT_VALID_ADDRESS)) {
153 * meaning of NOT_VALID_ADDRESS:
154 * driver try to read chunk from address that is
155 * multiple of 2K and got an error since addr is empty.
156 * meaning of (offset != 0): driver already
157 * read valid data from another chunk so this case
160 IWL_DEBUG_EEPROM(mvm->trans->dev,
161 "NVM access command failed on offset 0x%x since that section size is multiple 2K\n",
165 IWL_DEBUG_EEPROM(mvm->trans->dev,
166 "NVM access command failed with status %d (device: %s)\n",
167 ret, mvm->cfg->name);
173 if (offset_read != offset) {
174 IWL_ERR(mvm, "NVM ACCESS response with invalid offset %d\n",
180 /* Write data to NVM */
181 memcpy(data + offset, resp_data, bytes_read);
189 static int iwl_nvm_write_section(struct iwl_mvm *mvm, u16 section,
190 const u8 *data, u16 length)
194 /* copy data in chunks of 2k (and remainder if any) */
196 while (offset < length) {
199 chunk_size = min(IWL_NVM_DEFAULT_CHUNK_SIZE,
202 ret = iwl_nvm_write_chunk(mvm, section, offset,
203 chunk_size, data + offset);
207 offset += chunk_size;
214 * Reads an NVM section completely.
215 * NICs prior to 7000 family doesn't have a real NVM, but just read
216 * section 0 which is the EEPROM. Because the EEPROM reading is unlimited
217 * by uCode, we need to manually check in this case that we don't
218 * overflow and try to read more than the EEPROM size.
219 * For 7000 family NICs, we supply the maximal size we can read, and
220 * the uCode fills the response with as much data as we can,
221 * without overflowing, so no check is needed.
223 static int iwl_nvm_read_section(struct iwl_mvm *mvm, u16 section,
224 u8 *data, u32 size_read)
226 u16 length, offset = 0;
229 /* Set nvm section read length */
230 length = IWL_NVM_DEFAULT_CHUNK_SIZE;
234 /* Read the NVM until exhausted (reading less than requested) */
235 while (ret == length) {
236 /* Check no memory assumptions fail and cause an overflow */
237 if ((size_read + offset + length) >
238 mvm->cfg->base_params->eeprom_size) {
239 IWL_ERR(mvm, "EEPROM size is too small for NVM\n");
243 ret = iwl_nvm_read_chunk(mvm, section, offset, length, data);
245 IWL_DEBUG_EEPROM(mvm->trans->dev,
246 "Cannot read NVM from section %d offset %d, length %d\n",
247 section, offset, length);
253 IWL_DEBUG_EEPROM(mvm->trans->dev,
254 "NVM section %d read completed\n", section);
258 static struct iwl_nvm_data *
259 iwl_parse_nvm_sections(struct iwl_mvm *mvm)
261 struct iwl_nvm_section *sections = mvm->nvm_sections;
262 const __le16 *hw, *sw, *calib, *regulatory, *mac_override, *phy_sku;
264 u32 mac_addr0, mac_addr1;
266 /* Checking for required sections */
267 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) {
268 if (!mvm->nvm_sections[NVM_SECTION_TYPE_SW].data ||
269 !mvm->nvm_sections[mvm->cfg->nvm_hw_section_num].data) {
270 IWL_ERR(mvm, "Can't parse empty OTP/NVM sections\n");
274 /* SW and REGULATORY sections are mandatory */
275 if (!mvm->nvm_sections[NVM_SECTION_TYPE_SW].data ||
276 !mvm->nvm_sections[NVM_SECTION_TYPE_REGULATORY].data) {
278 "Can't parse empty family 8000 OTP/NVM sections\n");
281 /* MAC_OVERRIDE or at least HW section must exist */
282 if (!mvm->nvm_sections[mvm->cfg->nvm_hw_section_num].data &&
283 !mvm->nvm_sections[NVM_SECTION_TYPE_MAC_OVERRIDE].data) {
285 "Can't parse mac_address, empty sections\n");
289 /* PHY_SKU section is mandatory in B0 */
290 if (!mvm->nvm_sections[NVM_SECTION_TYPE_PHY_SKU].data) {
292 "Can't parse phy_sku in B0, empty sections\n");
297 if (WARN_ON(!mvm->cfg))
300 /* read the mac address from WFMP registers */
301 mac_addr0 = iwl_trans_read_prph(mvm->trans, WFMP_MAC_ADDR_0);
302 mac_addr1 = iwl_trans_read_prph(mvm->trans, WFMP_MAC_ADDR_1);
304 hw = (const __le16 *)sections[mvm->cfg->nvm_hw_section_num].data;
305 sw = (const __le16 *)sections[NVM_SECTION_TYPE_SW].data;
306 calib = (const __le16 *)sections[NVM_SECTION_TYPE_CALIBRATION].data;
307 regulatory = (const __le16 *)sections[NVM_SECTION_TYPE_REGULATORY].data;
309 (const __le16 *)sections[NVM_SECTION_TYPE_MAC_OVERRIDE].data;
310 phy_sku = (const __le16 *)sections[NVM_SECTION_TYPE_PHY_SKU].data;
312 lar_enabled = !iwlwifi_mod_params.lar_disable &&
313 fw_has_capa(&mvm->fw->ucode_capa,
314 IWL_UCODE_TLV_CAPA_LAR_SUPPORT);
316 return iwl_parse_nvm_data(mvm->trans->dev, mvm->cfg, hw, sw, calib,
317 regulatory, mac_override, phy_sku,
318 mvm->fw->valid_tx_ant, mvm->fw->valid_rx_ant,
319 lar_enabled, mac_addr0, mac_addr1,
323 #define MAX_NVM_FILE_LEN 16384
326 * Reads external NVM from a file into mvm->nvm_sections
328 * HOW TO CREATE THE NVM FILE FORMAT:
329 * ------------------------------
330 * 1. create hex file, format:
335 * rev - 6 bit (word1)
336 * len - 10 bit (word1)
338 * rsv - 12 bit (word2)
340 * 2. flip 8bits with 8 bits per line to get the right NVM file format
342 * 3. create binary file from the hex file
344 * 4. save as "iNVM_xxx.bin" under /lib/firmware
346 static int iwl_mvm_read_external_nvm(struct iwl_mvm *mvm)
348 int ret, section_size;
350 const struct firmware *fw_entry;
356 const u8 *eof, *temp;
357 int max_section_size;
358 const __le32 *dword_buff;
360 #define NVM_WORD1_LEN(x) (8 * (x & 0x03FF))
361 #define NVM_WORD2_ID(x) (x >> 12)
362 #define NVM_WORD2_LEN_FAMILY_8000(x) (2 * ((x & 0xFF) << 8 | x >> 8))
363 #define NVM_WORD1_ID_FAMILY_8000(x) (x >> 4)
364 #define NVM_HEADER_0 (0x2A504C54)
365 #define NVM_HEADER_1 (0x4E564D2A)
366 #define NVM_HEADER_SIZE (4 * sizeof(u32))
368 IWL_DEBUG_EEPROM(mvm->trans->dev, "Read from external NVM\n");
370 /* Maximal size depends on HW family and step */
371 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
372 max_section_size = IWL_MAX_NVM_SECTION_SIZE;
374 max_section_size = IWL_MAX_NVM_8000_SECTION_SIZE;
377 * Obtain NVM image via request_firmware. Since we already used
378 * reject_firmware_nowait() for the firmware binary load and only
379 * get here after that we assume the NVM request can be satisfied
382 ret = reject_firmware(&fw_entry, mvm->nvm_file_name,
385 IWL_ERR(mvm, "ERROR: %s isn't available %d\n",
386 mvm->nvm_file_name, ret);
390 IWL_INFO(mvm, "Loaded NVM file %s (%zu bytes)\n",
391 mvm->nvm_file_name, fw_entry->size);
393 if (fw_entry->size > MAX_NVM_FILE_LEN) {
394 IWL_ERR(mvm, "NVM file too large\n");
399 eof = fw_entry->data + fw_entry->size;
400 dword_buff = (__le32 *)fw_entry->data;
402 /* some NVM file will contain a header.
403 * The header is identified by 2 dwords header as follow:
404 * dword[0] = 0x2A504C54
405 * dword[1] = 0x4E564D2A
407 * This header must be skipped when providing the NVM data to the FW.
409 if (fw_entry->size > NVM_HEADER_SIZE &&
410 dword_buff[0] == cpu_to_le32(NVM_HEADER_0) &&
411 dword_buff[1] == cpu_to_le32(NVM_HEADER_1)) {
412 file_sec = (void *)(fw_entry->data + NVM_HEADER_SIZE);
413 IWL_INFO(mvm, "NVM Version %08X\n", le32_to_cpu(dword_buff[2]));
414 IWL_INFO(mvm, "NVM Manufacturing date %08X\n",
415 le32_to_cpu(dword_buff[3]));
417 /* nvm file validation, dword_buff[2] holds the file version */
418 if ((CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_C_STEP &&
419 le32_to_cpu(dword_buff[2]) < 0xE4A) ||
420 (CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP &&
421 le32_to_cpu(dword_buff[2]) >= 0xE4A)) {
426 file_sec = (void *)fw_entry->data;
430 if (file_sec->data > eof) {
432 "ERROR - NVM file too short for section header\n");
437 /* check for EOF marker */
438 if (!file_sec->word1 && !file_sec->word2) {
443 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) {
445 2 * NVM_WORD1_LEN(le16_to_cpu(file_sec->word1));
446 section_id = NVM_WORD2_ID(le16_to_cpu(file_sec->word2));
448 section_size = 2 * NVM_WORD2_LEN_FAMILY_8000(
449 le16_to_cpu(file_sec->word2));
450 section_id = NVM_WORD1_ID_FAMILY_8000(
451 le16_to_cpu(file_sec->word1));
454 if (section_size > max_section_size) {
455 IWL_ERR(mvm, "ERROR - section too large (%d)\n",
462 IWL_ERR(mvm, "ERROR - section empty\n");
467 if (file_sec->data + section_size > eof) {
469 "ERROR - NVM file too short for section (%d bytes)\n",
475 if (WARN(section_id >= NVM_MAX_NUM_SECTIONS,
476 "Invalid NVM section ID %d\n", section_id)) {
481 temp = kmemdup(file_sec->data, section_size, GFP_KERNEL);
486 kfree(mvm->nvm_sections[section_id].data);
487 mvm->nvm_sections[section_id].data = temp;
488 mvm->nvm_sections[section_id].length = section_size;
490 /* advance to the next section */
491 file_sec = (void *)(file_sec->data + section_size);
494 release_firmware(fw_entry);
498 /* Loads the NVM data stored in mvm->nvm_sections into the NIC */
499 int iwl_mvm_load_nvm_to_nic(struct iwl_mvm *mvm)
502 struct iwl_nvm_section *sections = mvm->nvm_sections;
504 IWL_DEBUG_EEPROM(mvm->trans->dev, "'Write to NVM\n");
506 for (i = 0; i < ARRAY_SIZE(mvm->nvm_sections); i++) {
507 if (!mvm->nvm_sections[i].data || !mvm->nvm_sections[i].length)
509 ret = iwl_nvm_write_section(mvm, i, sections[i].data,
512 IWL_ERR(mvm, "iwl_mvm_send_cmd failed: %d\n", ret);
519 int iwl_nvm_init(struct iwl_mvm *mvm, bool read_nvm_from_nic)
523 u8 *nvm_buffer, *temp;
524 const char *nvm_file_B = mvm->cfg->default_nvm_file_B_step;
525 const char *nvm_file_C = mvm->cfg->default_nvm_file_C_step;
527 if (WARN_ON_ONCE(mvm->cfg->nvm_hw_section_num >= NVM_MAX_NUM_SECTIONS))
530 /* load NVM values from nic */
531 if (read_nvm_from_nic) {
532 /* Read From FW NVM */
533 IWL_DEBUG_EEPROM(mvm->trans->dev, "Read from NVM\n");
535 nvm_buffer = kmalloc(mvm->cfg->base_params->eeprom_size,
539 for (section = 0; section < NVM_MAX_NUM_SECTIONS; section++) {
540 /* we override the constness for initial read */
541 ret = iwl_nvm_read_section(mvm, section, nvm_buffer,
546 temp = kmemdup(nvm_buffer, ret, GFP_KERNEL);
551 mvm->nvm_sections[section].data = temp;
552 mvm->nvm_sections[section].length = ret;
554 #ifdef CONFIG_IWLWIFI_DEBUGFS
556 case NVM_SECTION_TYPE_SW:
557 mvm->nvm_sw_blob.data = temp;
558 mvm->nvm_sw_blob.size = ret;
560 case NVM_SECTION_TYPE_CALIBRATION:
561 mvm->nvm_calib_blob.data = temp;
562 mvm->nvm_calib_blob.size = ret;
564 case NVM_SECTION_TYPE_PRODUCTION:
565 mvm->nvm_prod_blob.data = temp;
566 mvm->nvm_prod_blob.size = ret;
568 case NVM_SECTION_TYPE_PHY_SKU:
569 mvm->nvm_phy_sku_blob.data = temp;
570 mvm->nvm_phy_sku_blob.size = ret;
573 if (section == mvm->cfg->nvm_hw_section_num) {
574 mvm->nvm_hw_blob.data = temp;
575 mvm->nvm_hw_blob.size = ret;
582 IWL_ERR(mvm, "OTP is blank\n");
586 /* Only if PNVM selected in the mod param - load external NVM */
587 if (mvm->nvm_file_name) {
588 /* read External NVM file from the mod param */
589 ret = iwl_mvm_read_external_nvm(mvm);
591 /* choose the nvm_file name according to the
594 if (CSR_HW_REV_STEP(mvm->trans->hw_rev) ==
596 mvm->nvm_file_name = nvm_file_B;
598 mvm->nvm_file_name = nvm_file_C;
600 if (ret == -EFAULT && mvm->nvm_file_name) {
601 /* in case nvm file was failed try again */
602 ret = iwl_mvm_read_external_nvm(mvm);
611 /* parse the relevant nvm sections */
612 mvm->nvm_data = iwl_parse_nvm_sections(mvm);
615 IWL_DEBUG_EEPROM(mvm->trans->dev, "nvm version = %x\n",
616 mvm->nvm_data->nvm_version);
621 struct iwl_mcc_update_resp *
622 iwl_mvm_update_mcc(struct iwl_mvm *mvm, const char *alpha2,
623 enum iwl_mcc_source src_id)
625 struct iwl_mcc_update_cmd mcc_update_cmd = {
626 .mcc = cpu_to_le16(alpha2[0] << 8 | alpha2[1]),
627 .source_id = (u8)src_id,
629 struct iwl_mcc_update_resp *mcc_resp, *resp_cp = NULL;
630 struct iwl_rx_packet *pkt;
631 struct iwl_host_cmd cmd = {
632 .id = MCC_UPDATE_CMD,
633 .flags = CMD_WANT_SKB,
634 .data = { &mcc_update_cmd },
639 int resp_len, n_channels;
642 if (WARN_ON_ONCE(!iwl_mvm_is_lar_supported(mvm)))
643 return ERR_PTR(-EOPNOTSUPP);
645 cmd.len[0] = sizeof(struct iwl_mcc_update_cmd);
647 IWL_DEBUG_LAR(mvm, "send MCC update to FW with '%c%c' src = %d\n",
648 alpha2[0], alpha2[1], src_id);
650 ret = iwl_mvm_send_cmd(mvm, &cmd);
656 /* Extract MCC response */
657 mcc_resp = (void *)pkt->data;
658 status = le32_to_cpu(mcc_resp->status);
660 mcc = le16_to_cpu(mcc_resp->mcc);
662 /* W/A for a FW/NVM issue - returns 0x00 for the world domain */
664 mcc = 0x3030; /* "00" - world */
665 mcc_resp->mcc = cpu_to_le16(mcc);
668 n_channels = __le32_to_cpu(mcc_resp->n_channels);
670 "MCC response status: 0x%x. new MCC: 0x%x ('%c%c') n_chans: %d\n",
671 status, mcc, mcc >> 8, mcc & 0xff, n_channels);
673 resp_len = sizeof(*mcc_resp) + n_channels * sizeof(__le32);
674 resp_cp = kmemdup(mcc_resp, resp_len, GFP_KERNEL);
689 #define WRD_METHOD "WRDD"
690 #define WRDD_WIFI (0x07)
691 #define WRDD_WIGIG (0x10)
693 static u32 iwl_mvm_wrdd_get_mcc(struct iwl_mvm *mvm, union acpi_object *wrdd)
695 union acpi_object *mcc_pkg, *domain_type, *mcc_value;
698 if (wrdd->type != ACPI_TYPE_PACKAGE ||
699 wrdd->package.count < 2 ||
700 wrdd->package.elements[0].type != ACPI_TYPE_INTEGER ||
701 wrdd->package.elements[0].integer.value != 0) {
702 IWL_DEBUG_LAR(mvm, "Unsupported wrdd structure\n");
706 for (i = 1 ; i < wrdd->package.count ; ++i) {
707 mcc_pkg = &wrdd->package.elements[i];
709 if (mcc_pkg->type != ACPI_TYPE_PACKAGE ||
710 mcc_pkg->package.count < 2 ||
711 mcc_pkg->package.elements[0].type != ACPI_TYPE_INTEGER ||
712 mcc_pkg->package.elements[1].type != ACPI_TYPE_INTEGER) {
717 domain_type = &mcc_pkg->package.elements[0];
718 if (domain_type->integer.value == WRDD_WIFI)
725 mcc_value = &mcc_pkg->package.elements[1];
726 return mcc_value->integer.value;
732 static int iwl_mvm_get_bios_mcc(struct iwl_mvm *mvm, char *mcc)
734 acpi_handle root_handle;
736 struct acpi_buffer wrdd = {ACPI_ALLOCATE_BUFFER, NULL};
739 struct pci_dev *pdev = to_pci_dev(mvm->dev);
741 root_handle = ACPI_HANDLE(&pdev->dev);
744 "Could not retrieve root port ACPI handle\n");
748 /* Get the method's handle */
749 status = acpi_get_handle(root_handle, (acpi_string)WRD_METHOD, &handle);
750 if (ACPI_FAILURE(status)) {
751 IWL_DEBUG_LAR(mvm, "WRD method not found\n");
755 /* Call WRDD with no arguments */
756 status = acpi_evaluate_object(handle, NULL, NULL, &wrdd);
757 if (ACPI_FAILURE(status)) {
758 IWL_DEBUG_LAR(mvm, "WRDC invocation failed (0x%x)\n", status);
762 mcc_val = iwl_mvm_wrdd_get_mcc(mvm, wrdd.pointer);
767 mcc[0] = (mcc_val >> 8) & 0xff;
768 mcc[1] = mcc_val & 0xff;
772 #else /* CONFIG_ACPI */
773 static int iwl_mvm_get_bios_mcc(struct iwl_mvm *mvm, char *mcc)
779 int iwl_mvm_init_mcc(struct iwl_mvm *mvm)
784 struct ieee80211_regdomain *regd;
787 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000) {
788 tlv_lar = fw_has_capa(&mvm->fw->ucode_capa,
789 IWL_UCODE_TLV_CAPA_LAR_SUPPORT);
790 nvm_lar = mvm->nvm_data->lar_enabled;
791 if (tlv_lar != nvm_lar)
793 "Conflict between TLV & NVM regarding enabling LAR (TLV = %s NVM =%s)\n",
794 tlv_lar ? "enabled" : "disabled",
795 nvm_lar ? "enabled" : "disabled");
798 if (!iwl_mvm_is_lar_supported(mvm))
802 * try to replay the last set MCC to FW. If it doesn't exist,
803 * queue an update to cfg80211 to retrieve the default alpha2 from FW.
805 retval = iwl_mvm_init_fw_regd(mvm);
806 if (retval != -ENOENT)
810 * Driver regulatory hint for initial update, this also informs the
811 * firmware we support wifi location updates.
812 * Disallow scans that might crash the FW while the LAR regdomain
815 mvm->lar_regdom_set = false;
817 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
818 if (IS_ERR_OR_NULL(regd))
821 if (iwl_mvm_is_wifi_mcc_supported(mvm) &&
822 !iwl_mvm_get_bios_mcc(mvm, mcc)) {
824 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, mcc,
825 MCC_SOURCE_BIOS, NULL);
826 if (IS_ERR_OR_NULL(regd))
830 retval = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
835 void iwl_mvm_rx_chub_update_mcc(struct iwl_mvm *mvm,
836 struct iwl_rx_cmd_buffer *rxb)
838 struct iwl_rx_packet *pkt = rxb_addr(rxb);
839 struct iwl_mcc_chub_notif *notif = (void *)pkt->data;
840 enum iwl_mcc_source src;
842 struct ieee80211_regdomain *regd;
844 lockdep_assert_held(&mvm->mutex);
846 if (WARN_ON_ONCE(!iwl_mvm_is_lar_supported(mvm)))
849 mcc[0] = notif->mcc >> 8;
850 mcc[1] = notif->mcc & 0xff;
852 src = notif->source_id;
855 "RX: received chub update mcc cmd (mcc '%s' src %d)\n",
857 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, mcc, src, NULL);
858 if (IS_ERR_OR_NULL(regd))
861 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);