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 - 2014 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 - 2014 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
);
142 if (pkt
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
143 IWL_ERR(mvm
, "Bad return from NVM_ACCES_COMMAND (0x%08X)\n",
149 /* Extract NVM response */
150 nvm_resp
= (void *)pkt
->data
;
151 ret
= le16_to_cpu(nvm_resp
->status
);
152 bytes_read
= le16_to_cpu(nvm_resp
->length
);
153 offset_read
= le16_to_cpu(nvm_resp
->offset
);
154 resp_data
= nvm_resp
->data
;
157 (ret
== READ_NVM_CHUNK_NOT_VALID_ADDRESS
)) {
159 * meaning of NOT_VALID_ADDRESS:
160 * driver try to read chunk from address that is
161 * multiple of 2K and got an error since addr is empty.
162 * meaning of (offset != 0): driver already
163 * read valid data from another chunk so this case
166 IWL_DEBUG_EEPROM(mvm
->trans
->dev
,
167 "NVM access command failed on offset 0x%x since that section size is multiple 2K\n",
171 IWL_DEBUG_EEPROM(mvm
->trans
->dev
,
172 "NVM access command failed with status %d (device: %s)\n",
173 ret
, mvm
->cfg
->name
);
179 if (offset_read
!= offset
) {
180 IWL_ERR(mvm
, "NVM ACCESS response with invalid offset %d\n",
186 /* Write data to NVM */
187 memcpy(data
+ offset
, resp_data
, bytes_read
);
195 static int iwl_nvm_write_section(struct iwl_mvm
*mvm
, u16 section
,
196 const u8
*data
, u16 length
)
200 /* copy data in chunks of 2k (and remainder if any) */
202 while (offset
< length
) {
205 chunk_size
= min(IWL_NVM_DEFAULT_CHUNK_SIZE
,
208 ret
= iwl_nvm_write_chunk(mvm
, section
, offset
,
209 chunk_size
, data
+ offset
);
213 offset
+= chunk_size
;
220 * Reads an NVM section completely.
221 * NICs prior to 7000 family doesn't have a real NVM, but just read
222 * section 0 which is the EEPROM. Because the EEPROM reading is unlimited
223 * by uCode, we need to manually check in this case that we don't
224 * overflow and try to read more than the EEPROM size.
225 * For 7000 family NICs, we supply the maximal size we can read, and
226 * the uCode fills the response with as much data as we can,
227 * without overflowing, so no check is needed.
229 static int iwl_nvm_read_section(struct iwl_mvm
*mvm
, u16 section
,
230 u8
*data
, u32 size_read
)
232 u16 length
, offset
= 0;
235 /* Set nvm section read length */
236 length
= IWL_NVM_DEFAULT_CHUNK_SIZE
;
240 /* Read the NVM until exhausted (reading less than requested) */
241 while (ret
== length
) {
242 /* Check no memory assumptions fail and cause an overflow */
243 if ((size_read
+ offset
+ length
) >
244 mvm
->cfg
->base_params
->eeprom_size
) {
245 IWL_ERR(mvm
, "EEPROM size is too small for NVM\n");
249 ret
= iwl_nvm_read_chunk(mvm
, section
, offset
, length
, data
);
251 IWL_DEBUG_EEPROM(mvm
->trans
->dev
,
252 "Cannot read NVM from section %d offset %d, length %d\n",
253 section
, offset
, length
);
259 IWL_DEBUG_EEPROM(mvm
->trans
->dev
,
260 "NVM section %d read completed\n", section
);
264 static struct iwl_nvm_data
*
265 iwl_parse_nvm_sections(struct iwl_mvm
*mvm
)
267 struct iwl_nvm_section
*sections
= mvm
->nvm_sections
;
268 const __le16
*hw
, *sw
, *calib
, *regulatory
, *mac_override
, *phy_sku
;
270 u32 mac_addr0
, mac_addr1
;
272 /* Checking for required sections */
273 if (mvm
->trans
->cfg
->device_family
!= IWL_DEVICE_FAMILY_8000
) {
274 if (!mvm
->nvm_sections
[NVM_SECTION_TYPE_SW
].data
||
275 !mvm
->nvm_sections
[mvm
->cfg
->nvm_hw_section_num
].data
) {
276 IWL_ERR(mvm
, "Can't parse empty OTP/NVM sections\n");
280 /* SW and REGULATORY sections are mandatory */
281 if (!mvm
->nvm_sections
[NVM_SECTION_TYPE_SW
].data
||
282 !mvm
->nvm_sections
[NVM_SECTION_TYPE_REGULATORY
].data
) {
284 "Can't parse empty family 8000 OTP/NVM sections\n");
287 /* MAC_OVERRIDE or at least HW section must exist */
288 if (!mvm
->nvm_sections
[mvm
->cfg
->nvm_hw_section_num
].data
&&
289 !mvm
->nvm_sections
[NVM_SECTION_TYPE_MAC_OVERRIDE
].data
) {
291 "Can't parse mac_address, empty sections\n");
295 /* PHY_SKU section is mandatory in B0 */
296 if (!mvm
->nvm_sections
[NVM_SECTION_TYPE_PHY_SKU
].data
) {
298 "Can't parse phy_sku in B0, empty sections\n");
303 if (WARN_ON(!mvm
->cfg
))
306 /* read the mac address from WFMP registers */
307 mac_addr0
= iwl_trans_read_prph(mvm
->trans
, WFMP_MAC_ADDR_0
);
308 mac_addr1
= iwl_trans_read_prph(mvm
->trans
, WFMP_MAC_ADDR_1
);
310 hw
= (const __le16
*)sections
[mvm
->cfg
->nvm_hw_section_num
].data
;
311 sw
= (const __le16
*)sections
[NVM_SECTION_TYPE_SW
].data
;
312 calib
= (const __le16
*)sections
[NVM_SECTION_TYPE_CALIBRATION
].data
;
313 regulatory
= (const __le16
*)sections
[NVM_SECTION_TYPE_REGULATORY
].data
;
315 (const __le16
*)sections
[NVM_SECTION_TYPE_MAC_OVERRIDE
].data
;
316 phy_sku
= (const __le16
*)sections
[NVM_SECTION_TYPE_PHY_SKU
].data
;
318 lar_enabled
= !iwlwifi_mod_params
.lar_disable
&&
319 (mvm
->fw
->ucode_capa
.capa
[0] &
320 IWL_UCODE_TLV_CAPA_LAR_SUPPORT
);
322 return iwl_parse_nvm_data(mvm
->trans
->dev
, mvm
->cfg
, hw
, sw
, calib
,
323 regulatory
, mac_override
, phy_sku
,
324 mvm
->fw
->valid_tx_ant
, mvm
->fw
->valid_rx_ant
,
325 lar_enabled
, mac_addr0
, mac_addr1
);
328 #define MAX_NVM_FILE_LEN 16384
331 * Reads external NVM from a file into mvm->nvm_sections
333 * HOW TO CREATE THE NVM FILE FORMAT:
334 * ------------------------------
335 * 1. create hex file, format:
340 * rev - 6 bit (word1)
341 * len - 10 bit (word1)
343 * rsv - 12 bit (word2)
345 * 2. flip 8bits with 8 bits per line to get the right NVM file format
347 * 3. create binary file from the hex file
349 * 4. save as "iNVM_xxx.bin" under /lib/firmware
351 static int iwl_mvm_read_external_nvm(struct iwl_mvm
*mvm
)
353 int ret
, section_size
;
355 const struct firmware
*fw_entry
;
361 const u8
*eof
, *temp
;
362 int max_section_size
;
363 const __le32
*dword_buff
;
365 #define NVM_WORD1_LEN(x) (8 * (x & 0x03FF))
366 #define NVM_WORD2_ID(x) (x >> 12)
367 #define NVM_WORD2_LEN_FAMILY_8000(x) (2 * ((x & 0xFF) << 8 | x >> 8))
368 #define NVM_WORD1_ID_FAMILY_8000(x) (x >> 4)
369 #define NVM_HEADER_0 (0x2A504C54)
370 #define NVM_HEADER_1 (0x4E564D2A)
371 #define NVM_HEADER_SIZE (4 * sizeof(u32))
373 IWL_DEBUG_EEPROM(mvm
->trans
->dev
, "Read from external NVM\n");
375 /* Maximal size depends on HW family and step */
376 if (mvm
->trans
->cfg
->device_family
!= IWL_DEVICE_FAMILY_8000
)
377 max_section_size
= IWL_MAX_NVM_SECTION_SIZE
;
379 max_section_size
= IWL_MAX_NVM_8000_SECTION_SIZE
;
382 * Obtain NVM image via request_firmware. Since we already used
383 * request_firmware_nowait() for the firmware binary load and only
384 * get here after that we assume the NVM request can be satisfied
387 ret
= request_firmware(&fw_entry
, mvm
->nvm_file_name
,
390 IWL_ERR(mvm
, "ERROR: %s isn't available %d\n",
391 mvm
->nvm_file_name
, ret
);
395 IWL_INFO(mvm
, "Loaded NVM file %s (%zu bytes)\n",
396 mvm
->nvm_file_name
, fw_entry
->size
);
398 if (fw_entry
->size
> MAX_NVM_FILE_LEN
) {
399 IWL_ERR(mvm
, "NVM file too large\n");
404 eof
= fw_entry
->data
+ fw_entry
->size
;
405 dword_buff
= (__le32
*)fw_entry
->data
;
407 /* some NVM file will contain a header.
408 * The header is identified by 2 dwords header as follow:
409 * dword[0] = 0x2A504C54
410 * dword[1] = 0x4E564D2A
412 * This header must be skipped when providing the NVM data to the FW.
414 if (fw_entry
->size
> NVM_HEADER_SIZE
&&
415 dword_buff
[0] == cpu_to_le32(NVM_HEADER_0
) &&
416 dword_buff
[1] == cpu_to_le32(NVM_HEADER_1
)) {
417 file_sec
= (void *)(fw_entry
->data
+ NVM_HEADER_SIZE
);
418 IWL_INFO(mvm
, "NVM Version %08X\n", le32_to_cpu(dword_buff
[2]));
419 IWL_INFO(mvm
, "NVM Manufacturing date %08X\n",
420 le32_to_cpu(dword_buff
[3]));
422 /* nvm file validation, dword_buff[2] holds the file version */
423 if ((CSR_HW_REV_STEP(mvm
->trans
->hw_rev
) == SILICON_C_STEP
&&
424 le32_to_cpu(dword_buff
[2]) < 0xE4A) ||
425 (CSR_HW_REV_STEP(mvm
->trans
->hw_rev
) == SILICON_B_STEP
&&
426 le32_to_cpu(dword_buff
[2]) >= 0xE4A)) {
431 file_sec
= (void *)fw_entry
->data
;
435 if (file_sec
->data
> eof
) {
437 "ERROR - NVM file too short for section header\n");
442 /* check for EOF marker */
443 if (!file_sec
->word1
&& !file_sec
->word2
) {
448 if (mvm
->trans
->cfg
->device_family
!= IWL_DEVICE_FAMILY_8000
) {
450 2 * NVM_WORD1_LEN(le16_to_cpu(file_sec
->word1
));
451 section_id
= NVM_WORD2_ID(le16_to_cpu(file_sec
->word2
));
453 section_size
= 2 * NVM_WORD2_LEN_FAMILY_8000(
454 le16_to_cpu(file_sec
->word2
));
455 section_id
= NVM_WORD1_ID_FAMILY_8000(
456 le16_to_cpu(file_sec
->word1
));
459 if (section_size
> max_section_size
) {
460 IWL_ERR(mvm
, "ERROR - section too large (%d)\n",
467 IWL_ERR(mvm
, "ERROR - section empty\n");
472 if (file_sec
->data
+ section_size
> eof
) {
474 "ERROR - NVM file too short for section (%d bytes)\n",
480 if (WARN(section_id
>= NVM_MAX_NUM_SECTIONS
,
481 "Invalid NVM section ID %d\n", section_id
)) {
486 temp
= kmemdup(file_sec
->data
, section_size
, GFP_KERNEL
);
491 mvm
->nvm_sections
[section_id
].data
= temp
;
492 mvm
->nvm_sections
[section_id
].length
= section_size
;
494 /* advance to the next section */
495 file_sec
= (void *)(file_sec
->data
+ section_size
);
498 release_firmware(fw_entry
);
502 /* Loads the NVM data stored in mvm->nvm_sections into the NIC */
503 int iwl_mvm_load_nvm_to_nic(struct iwl_mvm
*mvm
)
506 struct iwl_nvm_section
*sections
= mvm
->nvm_sections
;
508 IWL_DEBUG_EEPROM(mvm
->trans
->dev
, "'Write to NVM\n");
510 for (i
= 0; i
< ARRAY_SIZE(mvm
->nvm_sections
); i
++) {
511 if (!mvm
->nvm_sections
[i
].data
|| !mvm
->nvm_sections
[i
].length
)
513 ret
= iwl_nvm_write_section(mvm
, i
, sections
[i
].data
,
516 IWL_ERR(mvm
, "iwl_mvm_send_cmd failed: %d\n", ret
);
523 int iwl_nvm_init(struct iwl_mvm
*mvm
, bool read_nvm_from_nic
)
527 u8
*nvm_buffer
, *temp
;
528 const char *nvm_file_B
= mvm
->cfg
->default_nvm_file_B_step
;
529 const char *nvm_file_C
= mvm
->cfg
->default_nvm_file_C_step
;
531 if (WARN_ON_ONCE(mvm
->cfg
->nvm_hw_section_num
>= NVM_MAX_NUM_SECTIONS
))
534 /* load NVM values from nic */
535 if (read_nvm_from_nic
) {
536 /* Read From FW NVM */
537 IWL_DEBUG_EEPROM(mvm
->trans
->dev
, "Read from NVM\n");
539 nvm_buffer
= kmalloc(mvm
->cfg
->base_params
->eeprom_size
,
543 for (section
= 0; section
< NVM_MAX_NUM_SECTIONS
; section
++) {
544 /* we override the constness for initial read */
545 ret
= iwl_nvm_read_section(mvm
, section
, nvm_buffer
,
550 temp
= kmemdup(nvm_buffer
, ret
, GFP_KERNEL
);
555 mvm
->nvm_sections
[section
].data
= temp
;
556 mvm
->nvm_sections
[section
].length
= ret
;
558 #ifdef CONFIG_IWLWIFI_DEBUGFS
560 case NVM_SECTION_TYPE_SW
:
561 mvm
->nvm_sw_blob
.data
= temp
;
562 mvm
->nvm_sw_blob
.size
= ret
;
564 case NVM_SECTION_TYPE_CALIBRATION
:
565 mvm
->nvm_calib_blob
.data
= temp
;
566 mvm
->nvm_calib_blob
.size
= ret
;
568 case NVM_SECTION_TYPE_PRODUCTION
:
569 mvm
->nvm_prod_blob
.data
= temp
;
570 mvm
->nvm_prod_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 /* load external NVM if configured */
587 if (mvm
->nvm_file_name
) {
588 /* read External NVM file - take the default */
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
);
655 if (pkt
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
656 IWL_ERR(mvm
, "Bad return from MCC_UPDATE_COMMAND (0x%08X)\n",
662 /* Extract MCC response */
663 mcc_resp
= (void *)pkt
->data
;
664 status
= le32_to_cpu(mcc_resp
->status
);
666 mcc
= le16_to_cpu(mcc_resp
->mcc
);
668 /* W/A for a FW/NVM issue - returns 0x00 for the world domain */
670 mcc
= 0x3030; /* "00" - world */
671 mcc_resp
->mcc
= cpu_to_le16(mcc
);
674 n_channels
= __le32_to_cpu(mcc_resp
->n_channels
);
676 "MCC response status: 0x%x. new MCC: 0x%x ('%c%c') change: %d n_chans: %d\n",
677 status
, mcc
, mcc
>> 8, mcc
& 0xff,
678 !!(status
== MCC_RESP_NEW_CHAN_PROFILE
), n_channels
);
680 resp_len
= sizeof(*mcc_resp
) + n_channels
* sizeof(__le32
);
681 resp_cp
= kmemdup(mcc_resp
, resp_len
, GFP_KERNEL
);
696 #define WRD_METHOD "WRDD"
697 #define WRDD_WIFI (0x07)
698 #define WRDD_WIGIG (0x10)
700 static u32
iwl_mvm_wrdd_get_mcc(struct iwl_mvm
*mvm
, union acpi_object
*wrdd
)
702 union acpi_object
*mcc_pkg
, *domain_type
, *mcc_value
;
705 if (wrdd
->type
!= ACPI_TYPE_PACKAGE
||
706 wrdd
->package
.count
< 2 ||
707 wrdd
->package
.elements
[0].type
!= ACPI_TYPE_INTEGER
||
708 wrdd
->package
.elements
[0].integer
.value
!= 0) {
709 IWL_DEBUG_LAR(mvm
, "Unsupported wrdd structure\n");
713 for (i
= 1 ; i
< wrdd
->package
.count
; ++i
) {
714 mcc_pkg
= &wrdd
->package
.elements
[i
];
716 if (mcc_pkg
->type
!= ACPI_TYPE_PACKAGE
||
717 mcc_pkg
->package
.count
< 2 ||
718 mcc_pkg
->package
.elements
[0].type
!= ACPI_TYPE_INTEGER
||
719 mcc_pkg
->package
.elements
[1].type
!= ACPI_TYPE_INTEGER
) {
724 domain_type
= &mcc_pkg
->package
.elements
[0];
725 if (domain_type
->integer
.value
== WRDD_WIFI
)
732 mcc_value
= &mcc_pkg
->package
.elements
[1];
733 return mcc_value
->integer
.value
;
739 static int iwl_mvm_get_bios_mcc(struct iwl_mvm
*mvm
, char *mcc
)
741 acpi_handle root_handle
;
743 struct acpi_buffer wrdd
= {ACPI_ALLOCATE_BUFFER
, NULL
};
746 struct pci_dev
*pdev
= to_pci_dev(mvm
->dev
);
748 root_handle
= ACPI_HANDLE(&pdev
->dev
);
751 "Could not retrieve root port ACPI handle\n");
755 /* Get the method's handle */
756 status
= acpi_get_handle(root_handle
, (acpi_string
)WRD_METHOD
, &handle
);
757 if (ACPI_FAILURE(status
)) {
758 IWL_DEBUG_LAR(mvm
, "WRD method not found\n");
762 /* Call WRDD with no arguments */
763 status
= acpi_evaluate_object(handle
, NULL
, NULL
, &wrdd
);
764 if (ACPI_FAILURE(status
)) {
765 IWL_DEBUG_LAR(mvm
, "WRDC invocation failed (0x%x)\n", status
);
769 mcc_val
= iwl_mvm_wrdd_get_mcc(mvm
, wrdd
.pointer
);
774 mcc
[0] = (mcc_val
>> 8) & 0xff;
775 mcc
[1] = mcc_val
& 0xff;
779 #else /* CONFIG_ACPI */
780 static int iwl_mvm_get_bios_mcc(struct iwl_mvm
*mvm
, char *mcc
)
786 int iwl_mvm_init_mcc(struct iwl_mvm
*mvm
)
791 struct ieee80211_regdomain
*regd
;
794 if (mvm
->cfg
->device_family
== IWL_DEVICE_FAMILY_8000
) {
795 tlv_lar
= mvm
->fw
->ucode_capa
.capa
[0] &
796 IWL_UCODE_TLV_CAPA_LAR_SUPPORT
;
797 nvm_lar
= mvm
->nvm_data
->lar_enabled
;
798 if (tlv_lar
!= nvm_lar
)
800 "Conflict between TLV & NVM regarding enabling LAR (TLV = %s NVM =%s)\n",
801 tlv_lar
? "enabled" : "disabled",
802 nvm_lar
? "enabled" : "disabled");
805 if (!iwl_mvm_is_lar_supported(mvm
))
809 * During HW restart, only replay the last set MCC to FW. Otherwise,
810 * queue an update to cfg80211 to retrieve the default alpha2 from FW.
812 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART
, &mvm
->status
)) {
813 /* This should only be called during vif up and hold RTNL */
814 return iwl_mvm_init_fw_regd(mvm
);
818 * Driver regulatory hint for initial update, this also informs the
819 * firmware we support wifi location updates.
820 * Disallow scans that might crash the FW while the LAR regdomain
823 mvm
->lar_regdom_set
= false;
825 regd
= iwl_mvm_get_current_regdomain(mvm
, NULL
);
826 if (IS_ERR_OR_NULL(regd
))
829 if (iwl_mvm_is_wifi_mcc_supported(mvm
) &&
830 !iwl_mvm_get_bios_mcc(mvm
, mcc
)) {
832 regd
= iwl_mvm_get_regdomain(mvm
->hw
->wiphy
, mcc
,
833 MCC_SOURCE_BIOS
, NULL
);
834 if (IS_ERR_OR_NULL(regd
))
838 retval
= regulatory_set_wiphy_regd_sync_rtnl(mvm
->hw
->wiphy
, regd
);
843 int iwl_mvm_rx_chub_update_mcc(struct iwl_mvm
*mvm
,
844 struct iwl_rx_cmd_buffer
*rxb
,
845 struct iwl_device_cmd
*cmd
)
847 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
848 struct iwl_mcc_chub_notif
*notif
= (void *)pkt
->data
;
849 enum iwl_mcc_source src
;
851 struct ieee80211_regdomain
*regd
;
853 lockdep_assert_held(&mvm
->mutex
);
855 if (WARN_ON_ONCE(!iwl_mvm_is_lar_supported(mvm
)))
858 mcc
[0] = notif
->mcc
>> 8;
859 mcc
[1] = notif
->mcc
& 0xff;
861 src
= notif
->source_id
;
864 "RX: received chub update mcc cmd (mcc '%s' src %d)\n",
866 regd
= iwl_mvm_get_regdomain(mvm
->hw
->wiphy
, mcc
, src
, NULL
);
867 if (IS_ERR_OR_NULL(regd
))
870 regulatory_set_wiphy_regd(mvm
->hw
->wiphy
, regd
);