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 <linux/pci.h>
70 #include <linux/acpi.h>
71 #include "iwl-trans.h"
74 #include "iwl-eeprom-parse.h"
75 #include "iwl-eeprom-read.h"
76 #include "iwl-nvm-parse.h"
79 /* Default NVM size to read */
80 #define IWL_NVM_DEFAULT_CHUNK_SIZE (2*1024)
81 #define IWL_MAX_NVM_SECTION_SIZE 0x1b58
82 #define IWL_MAX_NVM_8000_SECTION_SIZE 0x1ffc
84 #define NVM_WRITE_OPCODE 1
85 #define NVM_READ_OPCODE 0
87 /* load nvm chunk response */
89 READ_NVM_CHUNK_SUCCEED
= 0,
90 READ_NVM_CHUNK_NOT_VALID_ADDRESS
= 1
94 * prepare the NVM host command w/ the pointers to the nvm buffer
97 static int iwl_nvm_write_chunk(struct iwl_mvm
*mvm
, u16 section
,
98 u16 offset
, u16 length
, const u8
*data
)
100 struct iwl_nvm_access_cmd nvm_access_cmd
= {
101 .offset
= cpu_to_le16(offset
),
102 .length
= cpu_to_le16(length
),
103 .type
= cpu_to_le16(section
),
104 .op_code
= NVM_WRITE_OPCODE
,
106 struct iwl_host_cmd cmd
= {
107 .id
= NVM_ACCESS_CMD
,
108 .len
= { sizeof(struct iwl_nvm_access_cmd
), length
},
109 .flags
= CMD_WANT_SKB
| CMD_SEND_IN_RFKILL
,
110 .data
= { &nvm_access_cmd
, data
},
111 /* data may come from vmalloc, so use _DUP */
112 .dataflags
= { 0, IWL_HCMD_DFL_DUP
},
114 struct iwl_rx_packet
*pkt
;
115 struct iwl_nvm_access_resp
*nvm_resp
;
118 ret
= iwl_mvm_send_cmd(mvm
, &cmd
);
124 IWL_ERR(mvm
, "Error in NVM_ACCESS response\n");
127 /* Extract & check NVM write response */
128 nvm_resp
= (void *)pkt
->data
;
129 if (le16_to_cpu(nvm_resp
->status
) != READ_NVM_CHUNK_SUCCEED
) {
131 "NVM access write command failed for section %u (status = 0x%x)\n",
132 section
, le16_to_cpu(nvm_resp
->status
));
140 static int iwl_nvm_read_chunk(struct iwl_mvm
*mvm
, u16 section
,
141 u16 offset
, u16 length
, u8
*data
)
143 struct iwl_nvm_access_cmd nvm_access_cmd
= {
144 .offset
= cpu_to_le16(offset
),
145 .length
= cpu_to_le16(length
),
146 .type
= cpu_to_le16(section
),
147 .op_code
= NVM_READ_OPCODE
,
149 struct iwl_nvm_access_resp
*nvm_resp
;
150 struct iwl_rx_packet
*pkt
;
151 struct iwl_host_cmd cmd
= {
152 .id
= NVM_ACCESS_CMD
,
153 .flags
= CMD_WANT_SKB
| CMD_SEND_IN_RFKILL
,
154 .data
= { &nvm_access_cmd
, },
156 int ret
, bytes_read
, offset_read
;
159 cmd
.len
[0] = sizeof(struct iwl_nvm_access_cmd
);
161 ret
= iwl_mvm_send_cmd(mvm
, &cmd
);
167 /* Extract NVM response */
168 nvm_resp
= (void *)pkt
->data
;
169 ret
= le16_to_cpu(nvm_resp
->status
);
170 bytes_read
= le16_to_cpu(nvm_resp
->length
);
171 offset_read
= le16_to_cpu(nvm_resp
->offset
);
172 resp_data
= nvm_resp
->data
;
175 (ret
== READ_NVM_CHUNK_NOT_VALID_ADDRESS
)) {
177 * meaning of NOT_VALID_ADDRESS:
178 * driver try to read chunk from address that is
179 * multiple of 2K and got an error since addr is empty.
180 * meaning of (offset != 0): driver already
181 * read valid data from another chunk so this case
184 IWL_DEBUG_EEPROM(mvm
->trans
->dev
,
185 "NVM access command failed on offset 0x%x since that section size is multiple 2K\n",
189 IWL_DEBUG_EEPROM(mvm
->trans
->dev
,
190 "NVM access command failed with status %d (device: %s)\n",
191 ret
, mvm
->cfg
->name
);
197 if (offset_read
!= offset
) {
198 IWL_ERR(mvm
, "NVM ACCESS response with invalid offset %d\n",
204 /* Write data to NVM */
205 memcpy(data
+ offset
, resp_data
, bytes_read
);
213 static int iwl_nvm_write_section(struct iwl_mvm
*mvm
, u16 section
,
214 const u8
*data
, u16 length
)
218 /* copy data in chunks of 2k (and remainder if any) */
220 while (offset
< length
) {
223 chunk_size
= min(IWL_NVM_DEFAULT_CHUNK_SIZE
,
226 ret
= iwl_nvm_write_chunk(mvm
, section
, offset
,
227 chunk_size
, data
+ offset
);
231 offset
+= chunk_size
;
237 static void iwl_mvm_nvm_fixups(struct iwl_mvm
*mvm
, unsigned int section
,
238 u8
*data
, unsigned int len
)
240 #define IWL_4165_DEVICE_ID 0x5501
241 #define NVM_SKU_CAP_MIMO_DISABLE BIT(5)
243 if (section
== NVM_SECTION_TYPE_PHY_SKU
&&
244 mvm
->trans
->hw_id
== IWL_4165_DEVICE_ID
&& data
&& len
>= 5 &&
245 (data
[4] & NVM_SKU_CAP_MIMO_DISABLE
))
246 /* OTP 0x52 bug work around: it's a 1x1 device */
247 data
[3] = ANT_B
| (ANT_B
<< 4);
251 * Reads an NVM section completely.
252 * NICs prior to 7000 family doesn't have a real NVM, but just read
253 * section 0 which is the EEPROM. Because the EEPROM reading is unlimited
254 * by uCode, we need to manually check in this case that we don't
255 * overflow and try to read more than the EEPROM size.
256 * For 7000 family NICs, we supply the maximal size we can read, and
257 * the uCode fills the response with as much data as we can,
258 * without overflowing, so no check is needed.
260 static int iwl_nvm_read_section(struct iwl_mvm
*mvm
, u16 section
,
261 u8
*data
, u32 size_read
)
263 u16 length
, offset
= 0;
266 /* Set nvm section read length */
267 length
= IWL_NVM_DEFAULT_CHUNK_SIZE
;
271 /* Read the NVM until exhausted (reading less than requested) */
272 while (ret
== length
) {
273 /* Check no memory assumptions fail and cause an overflow */
274 if ((size_read
+ offset
+ length
) >
275 mvm
->cfg
->base_params
->eeprom_size
) {
276 IWL_ERR(mvm
, "EEPROM size is too small for NVM\n");
280 ret
= iwl_nvm_read_chunk(mvm
, section
, offset
, length
, data
);
282 IWL_DEBUG_EEPROM(mvm
->trans
->dev
,
283 "Cannot read NVM from section %d offset %d, length %d\n",
284 section
, offset
, length
);
290 iwl_mvm_nvm_fixups(mvm
, section
, data
, offset
);
292 IWL_DEBUG_EEPROM(mvm
->trans
->dev
,
293 "NVM section %d read completed\n", section
);
297 static struct iwl_nvm_data
*
298 iwl_parse_nvm_sections(struct iwl_mvm
*mvm
)
300 struct iwl_nvm_section
*sections
= mvm
->nvm_sections
;
301 const __le16
*hw
, *sw
, *calib
, *regulatory
, *mac_override
, *phy_sku
;
303 u32 mac_addr0
, mac_addr1
;
305 /* Checking for required sections */
306 if (mvm
->trans
->cfg
->device_family
!= IWL_DEVICE_FAMILY_8000
) {
307 if (!mvm
->nvm_sections
[NVM_SECTION_TYPE_SW
].data
||
308 !mvm
->nvm_sections
[mvm
->cfg
->nvm_hw_section_num
].data
) {
309 IWL_ERR(mvm
, "Can't parse empty OTP/NVM sections\n");
313 /* SW and REGULATORY sections are mandatory */
314 if (!mvm
->nvm_sections
[NVM_SECTION_TYPE_SW
].data
||
315 !mvm
->nvm_sections
[NVM_SECTION_TYPE_REGULATORY
].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
->nvm_sections
[NVM_SECTION_TYPE_PHY_SKU
].data
) {
331 "Can't parse phy_sku in B0, empty sections\n");
336 if (WARN_ON(!mvm
->cfg
))
339 /* read the mac address from WFMP registers */
340 mac_addr0
= iwl_trans_read_prph(mvm
->trans
, WFMP_MAC_ADDR_0
);
341 mac_addr1
= iwl_trans_read_prph(mvm
->trans
, WFMP_MAC_ADDR_1
);
343 hw
= (const __le16
*)sections
[mvm
->cfg
->nvm_hw_section_num
].data
;
344 sw
= (const __le16
*)sections
[NVM_SECTION_TYPE_SW
].data
;
345 calib
= (const __le16
*)sections
[NVM_SECTION_TYPE_CALIBRATION
].data
;
346 regulatory
= (const __le16
*)sections
[NVM_SECTION_TYPE_REGULATORY
].data
;
348 (const __le16
*)sections
[NVM_SECTION_TYPE_MAC_OVERRIDE
].data
;
349 phy_sku
= (const __le16
*)sections
[NVM_SECTION_TYPE_PHY_SKU
].data
;
351 lar_enabled
= !iwlwifi_mod_params
.lar_disable
&&
352 fw_has_capa(&mvm
->fw
->ucode_capa
,
353 IWL_UCODE_TLV_CAPA_LAR_SUPPORT
);
355 return iwl_parse_nvm_data(mvm
->trans
->dev
, mvm
->cfg
, hw
, sw
, calib
,
356 regulatory
, mac_override
, phy_sku
,
357 mvm
->fw
->valid_tx_ant
, mvm
->fw
->valid_rx_ant
,
358 lar_enabled
, mac_addr0
, mac_addr1
);
361 #define MAX_NVM_FILE_LEN 16384
364 * Reads external NVM from a file into mvm->nvm_sections
366 * HOW TO CREATE THE NVM FILE FORMAT:
367 * ------------------------------
368 * 1. create hex file, format:
373 * rev - 6 bit (word1)
374 * len - 10 bit (word1)
376 * rsv - 12 bit (word2)
378 * 2. flip 8bits with 8 bits per line to get the right NVM file format
380 * 3. create binary file from the hex file
382 * 4. save as "iNVM_xxx.bin" under /lib/firmware
384 static int iwl_mvm_read_external_nvm(struct iwl_mvm
*mvm
)
386 int ret
, section_size
;
388 const struct firmware
*fw_entry
;
396 int max_section_size
;
397 const __le32
*dword_buff
;
399 #define NVM_WORD1_LEN(x) (8 * (x & 0x03FF))
400 #define NVM_WORD2_ID(x) (x >> 12)
401 #define NVM_WORD2_LEN_FAMILY_8000(x) (2 * ((x & 0xFF) << 8 | x >> 8))
402 #define NVM_WORD1_ID_FAMILY_8000(x) (x >> 4)
403 #define NVM_HEADER_0 (0x2A504C54)
404 #define NVM_HEADER_1 (0x4E564D2A)
405 #define NVM_HEADER_SIZE (4 * sizeof(u32))
407 IWL_DEBUG_EEPROM(mvm
->trans
->dev
, "Read from external NVM\n");
409 /* Maximal size depends on HW family and step */
410 if (mvm
->trans
->cfg
->device_family
!= IWL_DEVICE_FAMILY_8000
)
411 max_section_size
= IWL_MAX_NVM_SECTION_SIZE
;
413 max_section_size
= IWL_MAX_NVM_8000_SECTION_SIZE
;
416 * Obtain NVM image via request_firmware. Since we already used
417 * request_firmware_nowait() for the firmware binary load and only
418 * get here after that we assume the NVM request can be satisfied
421 ret
= request_firmware(&fw_entry
, mvm
->nvm_file_name
,
424 IWL_ERR(mvm
, "ERROR: %s isn't available %d\n",
425 mvm
->nvm_file_name
, ret
);
429 IWL_INFO(mvm
, "Loaded NVM file %s (%zu bytes)\n",
430 mvm
->nvm_file_name
, fw_entry
->size
);
432 if (fw_entry
->size
> MAX_NVM_FILE_LEN
) {
433 IWL_ERR(mvm
, "NVM file too large\n");
438 eof
= fw_entry
->data
+ fw_entry
->size
;
439 dword_buff
= (__le32
*)fw_entry
->data
;
441 /* some NVM file will contain a header.
442 * The header is identified by 2 dwords header as follow:
443 * dword[0] = 0x2A504C54
444 * dword[1] = 0x4E564D2A
446 * This header must be skipped when providing the NVM data to the FW.
448 if (fw_entry
->size
> NVM_HEADER_SIZE
&&
449 dword_buff
[0] == cpu_to_le32(NVM_HEADER_0
) &&
450 dword_buff
[1] == cpu_to_le32(NVM_HEADER_1
)) {
451 file_sec
= (void *)(fw_entry
->data
+ NVM_HEADER_SIZE
);
452 IWL_INFO(mvm
, "NVM Version %08X\n", le32_to_cpu(dword_buff
[2]));
453 IWL_INFO(mvm
, "NVM Manufacturing date %08X\n",
454 le32_to_cpu(dword_buff
[3]));
456 /* nvm file validation, dword_buff[2] holds the file version */
457 if ((CSR_HW_REV_STEP(mvm
->trans
->hw_rev
) == SILICON_C_STEP
&&
458 le32_to_cpu(dword_buff
[2]) < 0xE4A) ||
459 (CSR_HW_REV_STEP(mvm
->trans
->hw_rev
) == SILICON_B_STEP
&&
460 le32_to_cpu(dword_buff
[2]) >= 0xE4A)) {
465 file_sec
= (void *)fw_entry
->data
;
469 if (file_sec
->data
> eof
) {
471 "ERROR - NVM file too short for section header\n");
476 /* check for EOF marker */
477 if (!file_sec
->word1
&& !file_sec
->word2
) {
482 if (mvm
->trans
->cfg
->device_family
!= IWL_DEVICE_FAMILY_8000
) {
484 2 * NVM_WORD1_LEN(le16_to_cpu(file_sec
->word1
));
485 section_id
= NVM_WORD2_ID(le16_to_cpu(file_sec
->word2
));
487 section_size
= 2 * NVM_WORD2_LEN_FAMILY_8000(
488 le16_to_cpu(file_sec
->word2
));
489 section_id
= NVM_WORD1_ID_FAMILY_8000(
490 le16_to_cpu(file_sec
->word1
));
493 if (section_size
> max_section_size
) {
494 IWL_ERR(mvm
, "ERROR - section too large (%d)\n",
501 IWL_ERR(mvm
, "ERROR - section empty\n");
506 if (file_sec
->data
+ section_size
> eof
) {
508 "ERROR - NVM file too short for section (%d bytes)\n",
514 if (WARN(section_id
>= NVM_MAX_NUM_SECTIONS
,
515 "Invalid NVM section ID %d\n", section_id
)) {
520 temp
= kmemdup(file_sec
->data
, section_size
, GFP_KERNEL
);
526 iwl_mvm_nvm_fixups(mvm
, section_id
, temp
, section_size
);
528 kfree(mvm
->nvm_sections
[section_id
].data
);
529 mvm
->nvm_sections
[section_id
].data
= temp
;
530 mvm
->nvm_sections
[section_id
].length
= section_size
;
532 /* advance to the next section */
533 file_sec
= (void *)(file_sec
->data
+ section_size
);
536 release_firmware(fw_entry
);
540 /* Loads the NVM data stored in mvm->nvm_sections into the NIC */
541 int iwl_mvm_load_nvm_to_nic(struct iwl_mvm
*mvm
)
544 struct iwl_nvm_section
*sections
= mvm
->nvm_sections
;
546 IWL_DEBUG_EEPROM(mvm
->trans
->dev
, "'Write to NVM\n");
548 for (i
= 0; i
< ARRAY_SIZE(mvm
->nvm_sections
); i
++) {
549 if (!mvm
->nvm_sections
[i
].data
|| !mvm
->nvm_sections
[i
].length
)
551 ret
= iwl_nvm_write_section(mvm
, i
, sections
[i
].data
,
554 IWL_ERR(mvm
, "iwl_mvm_send_cmd failed: %d\n", ret
);
561 int iwl_nvm_init(struct iwl_mvm
*mvm
, bool read_nvm_from_nic
)
565 u8
*nvm_buffer
, *temp
;
566 const char *nvm_file_B
= mvm
->cfg
->default_nvm_file_B_step
;
567 const char *nvm_file_C
= mvm
->cfg
->default_nvm_file_C_step
;
569 if (WARN_ON_ONCE(mvm
->cfg
->nvm_hw_section_num
>= NVM_MAX_NUM_SECTIONS
))
572 /* load NVM values from nic */
573 if (read_nvm_from_nic
) {
574 /* Read From FW NVM */
575 IWL_DEBUG_EEPROM(mvm
->trans
->dev
, "Read from NVM\n");
577 nvm_buffer
= kmalloc(mvm
->cfg
->base_params
->eeprom_size
,
581 for (section
= 0; section
< NVM_MAX_NUM_SECTIONS
; section
++) {
582 /* we override the constness for initial read */
583 ret
= iwl_nvm_read_section(mvm
, section
, nvm_buffer
,
588 temp
= kmemdup(nvm_buffer
, ret
, GFP_KERNEL
);
594 iwl_mvm_nvm_fixups(mvm
, section
, temp
, ret
);
596 mvm
->nvm_sections
[section
].data
= temp
;
597 mvm
->nvm_sections
[section
].length
= ret
;
599 #ifdef CONFIG_IWLWIFI_DEBUGFS
601 case NVM_SECTION_TYPE_SW
:
602 mvm
->nvm_sw_blob
.data
= temp
;
603 mvm
->nvm_sw_blob
.size
= ret
;
605 case NVM_SECTION_TYPE_CALIBRATION
:
606 mvm
->nvm_calib_blob
.data
= temp
;
607 mvm
->nvm_calib_blob
.size
= ret
;
609 case NVM_SECTION_TYPE_PRODUCTION
:
610 mvm
->nvm_prod_blob
.data
= temp
;
611 mvm
->nvm_prod_blob
.size
= ret
;
613 case NVM_SECTION_TYPE_PHY_SKU
:
614 mvm
->nvm_phy_sku_blob
.data
= temp
;
615 mvm
->nvm_phy_sku_blob
.size
= ret
;
618 if (section
== mvm
->cfg
->nvm_hw_section_num
) {
619 mvm
->nvm_hw_blob
.data
= temp
;
620 mvm
->nvm_hw_blob
.size
= ret
;
627 IWL_ERR(mvm
, "OTP is blank\n");
631 /* Only if PNVM selected in the mod param - load external NVM */
632 if (mvm
->nvm_file_name
) {
633 /* read External NVM file from the mod param */
634 ret
= iwl_mvm_read_external_nvm(mvm
);
636 /* choose the nvm_file name according to the
639 if (CSR_HW_REV_STEP(mvm
->trans
->hw_rev
) ==
641 mvm
->nvm_file_name
= nvm_file_B
;
643 mvm
->nvm_file_name
= nvm_file_C
;
645 if ((ret
== -EFAULT
|| ret
== -ENOENT
) &&
646 mvm
->nvm_file_name
) {
647 /* in case nvm file was failed try again */
648 ret
= iwl_mvm_read_external_nvm(mvm
);
657 /* parse the relevant nvm sections */
658 mvm
->nvm_data
= iwl_parse_nvm_sections(mvm
);
661 IWL_DEBUG_EEPROM(mvm
->trans
->dev
, "nvm version = %x\n",
662 mvm
->nvm_data
->nvm_version
);
667 struct iwl_mcc_update_resp
*
668 iwl_mvm_update_mcc(struct iwl_mvm
*mvm
, const char *alpha2
,
669 enum iwl_mcc_source src_id
)
671 struct iwl_mcc_update_cmd mcc_update_cmd
= {
672 .mcc
= cpu_to_le16(alpha2
[0] << 8 | alpha2
[1]),
673 .source_id
= (u8
)src_id
,
675 struct iwl_mcc_update_resp
*mcc_resp
, *resp_cp
= NULL
;
676 struct iwl_mcc_update_resp_v1
*mcc_resp_v1
= NULL
;
677 struct iwl_rx_packet
*pkt
;
678 struct iwl_host_cmd cmd
= {
679 .id
= MCC_UPDATE_CMD
,
680 .flags
= CMD_WANT_SKB
,
681 .data
= { &mcc_update_cmd
},
686 int resp_len
, n_channels
;
688 bool resp_v2
= fw_has_capa(&mvm
->fw
->ucode_capa
,
689 IWL_UCODE_TLV_CAPA_LAR_SUPPORT_V2
);
691 if (WARN_ON_ONCE(!iwl_mvm_is_lar_supported(mvm
)))
692 return ERR_PTR(-EOPNOTSUPP
);
694 cmd
.len
[0] = sizeof(struct iwl_mcc_update_cmd
);
696 cmd
.len
[0] = sizeof(struct iwl_mcc_update_cmd_v1
);
698 IWL_DEBUG_LAR(mvm
, "send MCC update to FW with '%c%c' src = %d\n",
699 alpha2
[0], alpha2
[1], src_id
);
701 ret
= iwl_mvm_send_cmd(mvm
, &cmd
);
707 /* Extract MCC response */
709 mcc_resp
= (void *)pkt
->data
;
710 n_channels
= __le32_to_cpu(mcc_resp
->n_channels
);
712 mcc_resp_v1
= (void *)pkt
->data
;
713 n_channels
= __le32_to_cpu(mcc_resp_v1
->n_channels
);
716 resp_len
= sizeof(struct iwl_mcc_update_resp
) + n_channels
*
719 resp_cp
= kzalloc(resp_len
, GFP_KERNEL
);
726 memcpy(resp_cp
, mcc_resp
, resp_len
);
728 resp_cp
->status
= mcc_resp_v1
->status
;
729 resp_cp
->mcc
= mcc_resp_v1
->mcc
;
730 resp_cp
->cap
= mcc_resp_v1
->cap
;
731 resp_cp
->source_id
= mcc_resp_v1
->source_id
;
732 resp_cp
->n_channels
= mcc_resp_v1
->n_channels
;
733 memcpy(resp_cp
->channels
, mcc_resp_v1
->channels
,
734 n_channels
* sizeof(__le32
));
737 status
= le32_to_cpu(resp_cp
->status
);
739 mcc
= le16_to_cpu(resp_cp
->mcc
);
741 /* W/A for a FW/NVM issue - returns 0x00 for the world domain */
743 mcc
= 0x3030; /* "00" - world */
744 resp_cp
->mcc
= cpu_to_le16(mcc
);
748 "MCC response status: 0x%x. new MCC: 0x%x ('%c%c') change: %d n_chans: %d\n",
749 status
, mcc
, mcc
>> 8, mcc
& 0xff,
750 !!(status
== MCC_RESP_NEW_CHAN_PROFILE
), n_channels
);
760 #define WRD_METHOD "WRDD"
761 #define WRDD_WIFI (0x07)
762 #define WRDD_WIGIG (0x10)
764 static u32
iwl_mvm_wrdd_get_mcc(struct iwl_mvm
*mvm
, union acpi_object
*wrdd
)
766 union acpi_object
*mcc_pkg
, *domain_type
, *mcc_value
;
769 if (wrdd
->type
!= ACPI_TYPE_PACKAGE
||
770 wrdd
->package
.count
< 2 ||
771 wrdd
->package
.elements
[0].type
!= ACPI_TYPE_INTEGER
||
772 wrdd
->package
.elements
[0].integer
.value
!= 0) {
773 IWL_DEBUG_LAR(mvm
, "Unsupported wrdd structure\n");
777 for (i
= 1 ; i
< wrdd
->package
.count
; ++i
) {
778 mcc_pkg
= &wrdd
->package
.elements
[i
];
780 if (mcc_pkg
->type
!= ACPI_TYPE_PACKAGE
||
781 mcc_pkg
->package
.count
< 2 ||
782 mcc_pkg
->package
.elements
[0].type
!= ACPI_TYPE_INTEGER
||
783 mcc_pkg
->package
.elements
[1].type
!= ACPI_TYPE_INTEGER
) {
788 domain_type
= &mcc_pkg
->package
.elements
[0];
789 if (domain_type
->integer
.value
== WRDD_WIFI
)
796 mcc_value
= &mcc_pkg
->package
.elements
[1];
797 return mcc_value
->integer
.value
;
803 static int iwl_mvm_get_bios_mcc(struct iwl_mvm
*mvm
, char *mcc
)
805 acpi_handle root_handle
;
807 struct acpi_buffer wrdd
= {ACPI_ALLOCATE_BUFFER
, NULL
};
810 struct pci_dev
*pdev
= to_pci_dev(mvm
->dev
);
812 root_handle
= ACPI_HANDLE(&pdev
->dev
);
815 "Could not retrieve root port ACPI handle\n");
819 /* Get the method's handle */
820 status
= acpi_get_handle(root_handle
, (acpi_string
)WRD_METHOD
, &handle
);
821 if (ACPI_FAILURE(status
)) {
822 IWL_DEBUG_LAR(mvm
, "WRD method not found\n");
826 /* Call WRDD with no arguments */
827 status
= acpi_evaluate_object(handle
, NULL
, NULL
, &wrdd
);
828 if (ACPI_FAILURE(status
)) {
829 IWL_DEBUG_LAR(mvm
, "WRDC invocation failed (0x%x)\n", status
);
833 mcc_val
= iwl_mvm_wrdd_get_mcc(mvm
, wrdd
.pointer
);
838 mcc
[0] = (mcc_val
>> 8) & 0xff;
839 mcc
[1] = mcc_val
& 0xff;
843 #else /* CONFIG_ACPI */
844 static int iwl_mvm_get_bios_mcc(struct iwl_mvm
*mvm
, char *mcc
)
850 int iwl_mvm_init_mcc(struct iwl_mvm
*mvm
)
855 struct ieee80211_regdomain
*regd
;
858 if (mvm
->cfg
->device_family
== IWL_DEVICE_FAMILY_8000
) {
859 tlv_lar
= fw_has_capa(&mvm
->fw
->ucode_capa
,
860 IWL_UCODE_TLV_CAPA_LAR_SUPPORT
);
861 nvm_lar
= mvm
->nvm_data
->lar_enabled
;
862 if (tlv_lar
!= nvm_lar
)
864 "Conflict between TLV & NVM regarding enabling LAR (TLV = %s NVM =%s)\n",
865 tlv_lar
? "enabled" : "disabled",
866 nvm_lar
? "enabled" : "disabled");
869 if (!iwl_mvm_is_lar_supported(mvm
))
873 * try to replay the last set MCC to FW. If it doesn't exist,
874 * queue an update to cfg80211 to retrieve the default alpha2 from FW.
876 retval
= iwl_mvm_init_fw_regd(mvm
);
877 if (retval
!= -ENOENT
)
881 * Driver regulatory hint for initial update, this also informs the
882 * firmware we support wifi location updates.
883 * Disallow scans that might crash the FW while the LAR regdomain
886 mvm
->lar_regdom_set
= false;
888 regd
= iwl_mvm_get_current_regdomain(mvm
, NULL
);
889 if (IS_ERR_OR_NULL(regd
))
892 if (iwl_mvm_is_wifi_mcc_supported(mvm
) &&
893 !iwl_mvm_get_bios_mcc(mvm
, mcc
)) {
895 regd
= iwl_mvm_get_regdomain(mvm
->hw
->wiphy
, mcc
,
896 MCC_SOURCE_BIOS
, NULL
);
897 if (IS_ERR_OR_NULL(regd
))
901 retval
= regulatory_set_wiphy_regd_sync_rtnl(mvm
->hw
->wiphy
, regd
);
906 void iwl_mvm_rx_chub_update_mcc(struct iwl_mvm
*mvm
,
907 struct iwl_rx_cmd_buffer
*rxb
)
909 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
910 struct iwl_mcc_chub_notif
*notif
= (void *)pkt
->data
;
911 enum iwl_mcc_source src
;
913 struct ieee80211_regdomain
*regd
;
915 lockdep_assert_held(&mvm
->mutex
);
917 if (WARN_ON_ONCE(!iwl_mvm_is_lar_supported(mvm
)))
920 mcc
[0] = notif
->mcc
>> 8;
921 mcc
[1] = notif
->mcc
& 0xff;
923 src
= notif
->source_id
;
926 "RX: received chub update mcc cmd (mcc '%s' src %d)\n",
928 regd
= iwl_mvm_get_regdomain(mvm
->hw
->wiphy
, mcc
, src
, NULL
);
929 if (IS_ERR_OR_NULL(regd
))
932 regulatory_set_wiphy_regd(mvm
->hw
->wiphy
, regd
);