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freebsd
GitHub Repository: freebsd/freebsd-src
Path: blob/main/sys/contrib/dev/iwlwifi/mvm/nvm.c
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1
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2
/*
3
* Copyright (C) 2012-2014, 2018-2019, 2021-2025 Intel Corporation
4
* Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5
* Copyright (C) 2016-2017 Intel Deutschland GmbH
6
*/
7
#include <linux/firmware.h>
8
#if defined(__linux__)
9
#include <linux/rtnetlink.h>
10
#endif
11
#include "iwl-trans.h"
12
#include "iwl-csr.h"
13
#include "mvm.h"
14
#include "iwl-nvm-utils.h"
15
#include "iwl-nvm-parse.h"
16
#include "iwl-prph.h"
17
#include "fw/acpi.h"
18
19
/* Default NVM size to read */
20
#define IWL_NVM_DEFAULT_CHUNK_SIZE (2 * 1024)
21
22
#define NVM_WRITE_OPCODE 1
23
#define NVM_READ_OPCODE 0
24
25
/* load nvm chunk response */
26
enum {
27
READ_NVM_CHUNK_SUCCEED = 0,
28
READ_NVM_CHUNK_NOT_VALID_ADDRESS = 1
29
};
30
31
/*
32
* prepare the NVM host command w/ the pointers to the nvm buffer
33
* and send it to fw
34
*/
35
static int iwl_nvm_write_chunk(struct iwl_mvm *mvm, u16 section,
36
u16 offset, u16 length, const u8 *data)
37
{
38
struct iwl_nvm_access_cmd nvm_access_cmd = {
39
.offset = cpu_to_le16(offset),
40
.length = cpu_to_le16(length),
41
.type = cpu_to_le16(section),
42
.op_code = NVM_WRITE_OPCODE,
43
};
44
struct iwl_host_cmd cmd = {
45
.id = NVM_ACCESS_CMD,
46
.len = { sizeof(struct iwl_nvm_access_cmd), length },
47
.flags = CMD_WANT_SKB | CMD_SEND_IN_RFKILL,
48
.data = { &nvm_access_cmd, data },
49
/* data may come from vmalloc, so use _DUP */
50
.dataflags = { 0, IWL_HCMD_DFL_DUP },
51
};
52
struct iwl_rx_packet *pkt;
53
struct iwl_nvm_access_resp *nvm_resp;
54
int ret;
55
56
ret = iwl_mvm_send_cmd(mvm, &cmd);
57
if (ret)
58
return ret;
59
60
pkt = cmd.resp_pkt;
61
/* Extract & check NVM write response */
62
nvm_resp = (void *)pkt->data;
63
if (le16_to_cpu(nvm_resp->status) != READ_NVM_CHUNK_SUCCEED) {
64
IWL_ERR(mvm,
65
"NVM access write command failed for section %u (status = 0x%x)\n",
66
section, le16_to_cpu(nvm_resp->status));
67
ret = -EIO;
68
}
69
70
iwl_free_resp(&cmd);
71
return ret;
72
}
73
74
static int iwl_nvm_read_chunk(struct iwl_mvm *mvm, u16 section,
75
u16 offset, u16 length, u8 *data)
76
{
77
struct iwl_nvm_access_cmd nvm_access_cmd = {
78
.offset = cpu_to_le16(offset),
79
.length = cpu_to_le16(length),
80
.type = cpu_to_le16(section),
81
.op_code = NVM_READ_OPCODE,
82
};
83
struct iwl_nvm_access_resp *nvm_resp;
84
struct iwl_rx_packet *pkt;
85
struct iwl_host_cmd cmd = {
86
.id = NVM_ACCESS_CMD,
87
.flags = CMD_WANT_SKB | CMD_SEND_IN_RFKILL,
88
.data = { &nvm_access_cmd, },
89
};
90
int ret, bytes_read, offset_read;
91
u8 *resp_data;
92
93
cmd.len[0] = sizeof(struct iwl_nvm_access_cmd);
94
95
ret = iwl_mvm_send_cmd(mvm, &cmd);
96
if (ret)
97
return ret;
98
99
pkt = cmd.resp_pkt;
100
101
/* Extract NVM response */
102
nvm_resp = (void *)pkt->data;
103
ret = le16_to_cpu(nvm_resp->status);
104
bytes_read = le16_to_cpu(nvm_resp->length);
105
offset_read = le16_to_cpu(nvm_resp->offset);
106
resp_data = nvm_resp->data;
107
if (ret) {
108
if ((offset != 0) &&
109
(ret == READ_NVM_CHUNK_NOT_VALID_ADDRESS)) {
110
/*
111
* meaning of NOT_VALID_ADDRESS:
112
* driver try to read chunk from address that is
113
* multiple of 2K and got an error since addr is empty.
114
* meaning of (offset != 0): driver already
115
* read valid data from another chunk so this case
116
* is not an error.
117
*/
118
IWL_DEBUG_EEPROM(mvm->trans->dev,
119
"NVM access command failed on offset 0x%x since that section size is multiple 2K\n",
120
offset);
121
ret = 0;
122
} else {
123
IWL_DEBUG_EEPROM(mvm->trans->dev,
124
"NVM access command failed with status %d (device: %s)\n",
125
ret, mvm->trans->info.name);
126
ret = -ENODATA;
127
}
128
goto exit;
129
}
130
131
if (offset_read != offset) {
132
IWL_ERR(mvm, "NVM ACCESS response with invalid offset %d\n",
133
offset_read);
134
ret = -EINVAL;
135
goto exit;
136
}
137
138
/* Write data to NVM */
139
memcpy(data + offset, resp_data, bytes_read);
140
ret = bytes_read;
141
142
exit:
143
iwl_free_resp(&cmd);
144
return ret;
145
}
146
147
static int iwl_nvm_write_section(struct iwl_mvm *mvm, u16 section,
148
const u8 *data, u16 length)
149
{
150
int offset = 0;
151
152
/* copy data in chunks of 2k (and remainder if any) */
153
154
while (offset < length) {
155
int chunk_size, ret;
156
157
chunk_size = min(IWL_NVM_DEFAULT_CHUNK_SIZE,
158
length - offset);
159
160
ret = iwl_nvm_write_chunk(mvm, section, offset,
161
chunk_size, data + offset);
162
if (ret < 0)
163
return ret;
164
165
offset += chunk_size;
166
}
167
168
return 0;
169
}
170
171
/*
172
* Reads an NVM section completely.
173
* NICs prior to 7000 family doesn't have a real NVM, but just read
174
* section 0 which is the EEPROM. Because the EEPROM reading is unlimited
175
* by uCode, we need to manually check in this case that we don't
176
* overflow and try to read more than the EEPROM size.
177
* For 7000 family NICs, we supply the maximal size we can read, and
178
* the uCode fills the response with as much data as we can,
179
* without overflowing, so no check is needed.
180
*/
181
static int iwl_nvm_read_section(struct iwl_mvm *mvm, u16 section,
182
u8 *data, u32 size_read)
183
{
184
u16 length, offset = 0;
185
int ret;
186
187
/* Set nvm section read length */
188
length = IWL_NVM_DEFAULT_CHUNK_SIZE;
189
190
ret = length;
191
192
/* Read the NVM until exhausted (reading less than requested) */
193
while (ret == length) {
194
/* Check no memory assumptions fail and cause an overflow */
195
if ((size_read + offset + length) >
196
mvm->trans->mac_cfg->base->eeprom_size) {
197
IWL_ERR(mvm, "EEPROM size is too small for NVM\n");
198
return -ENOBUFS;
199
}
200
201
ret = iwl_nvm_read_chunk(mvm, section, offset, length, data);
202
if (ret < 0) {
203
IWL_DEBUG_EEPROM(mvm->trans->dev,
204
"Cannot read NVM from section %d offset %d, length %d\n",
205
section, offset, length);
206
return ret;
207
}
208
offset += ret;
209
}
210
211
iwl_nvm_fixups(mvm->trans->info.hw_id, section, data, offset);
212
213
IWL_DEBUG_EEPROM(mvm->trans->dev,
214
"NVM section %d read completed\n", section);
215
return offset;
216
}
217
218
static struct iwl_nvm_data *
219
iwl_parse_nvm_sections(struct iwl_mvm *mvm)
220
{
221
struct iwl_nvm_section *sections = mvm->nvm_sections;
222
const __be16 *hw;
223
const __le16 *sw, *calib, *regulatory, *mac_override, *phy_sku;
224
u8 tx_ant = mvm->fw->valid_tx_ant;
225
u8 rx_ant = mvm->fw->valid_rx_ant;
226
int regulatory_type;
227
228
/* Checking for required sections */
229
if (mvm->trans->cfg->nvm_type == IWL_NVM) {
230
if (!mvm->nvm_sections[NVM_SECTION_TYPE_SW].data ||
231
!mvm->nvm_sections[mvm->trans->mac_cfg->base->nvm_hw_section_num].data) {
232
IWL_ERR(mvm, "Can't parse empty OTP/NVM sections\n");
233
return NULL;
234
}
235
} else {
236
if (mvm->trans->cfg->nvm_type == IWL_NVM_SDP)
237
regulatory_type = NVM_SECTION_TYPE_REGULATORY_SDP;
238
else
239
regulatory_type = NVM_SECTION_TYPE_REGULATORY;
240
241
/* SW and REGULATORY sections are mandatory */
242
if (!mvm->nvm_sections[NVM_SECTION_TYPE_SW].data ||
243
!mvm->nvm_sections[regulatory_type].data) {
244
IWL_ERR(mvm,
245
"Can't parse empty family 8000 OTP/NVM sections\n");
246
return NULL;
247
}
248
/* MAC_OVERRIDE or at least HW section must exist */
249
if (!mvm->nvm_sections[mvm->trans->mac_cfg->base->nvm_hw_section_num].data &&
250
!mvm->nvm_sections[NVM_SECTION_TYPE_MAC_OVERRIDE].data) {
251
IWL_ERR(mvm,
252
"Can't parse mac_address, empty sections\n");
253
return NULL;
254
}
255
256
/* PHY_SKU section is mandatory in B0 */
257
if (mvm->trans->cfg->nvm_type == IWL_NVM_EXT &&
258
!mvm->nvm_sections[NVM_SECTION_TYPE_PHY_SKU].data) {
259
IWL_ERR(mvm,
260
"Can't parse phy_sku in B0, empty sections\n");
261
return NULL;
262
}
263
}
264
265
hw = (const __be16 *)sections[mvm->trans->mac_cfg->base->nvm_hw_section_num].data;
266
sw = (const __le16 *)sections[NVM_SECTION_TYPE_SW].data;
267
calib = (const __le16 *)sections[NVM_SECTION_TYPE_CALIBRATION].data;
268
mac_override =
269
(const __le16 *)sections[NVM_SECTION_TYPE_MAC_OVERRIDE].data;
270
phy_sku = (const __le16 *)sections[NVM_SECTION_TYPE_PHY_SKU].data;
271
272
regulatory = mvm->trans->cfg->nvm_type == IWL_NVM_SDP ?
273
(const __le16 *)sections[NVM_SECTION_TYPE_REGULATORY_SDP].data :
274
(const __le16 *)sections[NVM_SECTION_TYPE_REGULATORY].data;
275
276
if (mvm->set_tx_ant)
277
tx_ant &= mvm->set_tx_ant;
278
279
if (mvm->set_rx_ant)
280
rx_ant &= mvm->set_rx_ant;
281
282
return iwl_parse_nvm_data(mvm->trans, mvm->cfg, mvm->fw, hw, sw, calib,
283
regulatory, mac_override, phy_sku,
284
tx_ant, rx_ant);
285
}
286
287
/* Loads the NVM data stored in mvm->nvm_sections into the NIC */
288
int iwl_mvm_load_nvm_to_nic(struct iwl_mvm *mvm)
289
{
290
int i, ret = 0;
291
struct iwl_nvm_section *sections = mvm->nvm_sections;
292
293
IWL_DEBUG_EEPROM(mvm->trans->dev, "'Write to NVM\n");
294
295
for (i = 0; i < ARRAY_SIZE(mvm->nvm_sections); i++) {
296
if (!mvm->nvm_sections[i].data || !mvm->nvm_sections[i].length)
297
continue;
298
ret = iwl_nvm_write_section(mvm, i, sections[i].data,
299
sections[i].length);
300
if (ret < 0) {
301
IWL_ERR(mvm, "iwl_mvm_send_cmd failed: %d\n", ret);
302
break;
303
}
304
}
305
return ret;
306
}
307
308
int iwl_nvm_init(struct iwl_mvm *mvm)
309
{
310
int ret, section;
311
u32 size_read = 0;
312
u8 *nvm_buffer, *temp;
313
314
if (WARN_ON_ONCE(mvm->trans->mac_cfg->base->nvm_hw_section_num >= NVM_MAX_NUM_SECTIONS))
315
return -EINVAL;
316
317
/* load NVM values from nic */
318
/* Read From FW NVM */
319
IWL_DEBUG_EEPROM(mvm->trans->dev, "Read from NVM\n");
320
321
nvm_buffer = kmalloc(mvm->trans->mac_cfg->base->eeprom_size,
322
GFP_KERNEL);
323
if (!nvm_buffer)
324
return -ENOMEM;
325
for (section = 0; section < NVM_MAX_NUM_SECTIONS; section++) {
326
/* we override the constness for initial read */
327
ret = iwl_nvm_read_section(mvm, section, nvm_buffer,
328
size_read);
329
if (ret == -ENODATA) {
330
ret = 0;
331
continue;
332
}
333
if (ret < 0)
334
break;
335
size_read += ret;
336
temp = kmemdup(nvm_buffer, ret, GFP_KERNEL);
337
if (!temp) {
338
ret = -ENOMEM;
339
break;
340
}
341
342
iwl_nvm_fixups(mvm->trans->info.hw_id, section, temp, ret);
343
344
mvm->nvm_sections[section].data = temp;
345
mvm->nvm_sections[section].length = ret;
346
347
#ifdef CONFIG_IWLWIFI_DEBUGFS
348
switch (section) {
349
case NVM_SECTION_TYPE_SW:
350
mvm->nvm_sw_blob.data = temp;
351
mvm->nvm_sw_blob.size = ret;
352
break;
353
case NVM_SECTION_TYPE_CALIBRATION:
354
mvm->nvm_calib_blob.data = temp;
355
mvm->nvm_calib_blob.size = ret;
356
break;
357
case NVM_SECTION_TYPE_PRODUCTION:
358
mvm->nvm_prod_blob.data = temp;
359
mvm->nvm_prod_blob.size = ret;
360
break;
361
case NVM_SECTION_TYPE_PHY_SKU:
362
mvm->nvm_phy_sku_blob.data = temp;
363
mvm->nvm_phy_sku_blob.size = ret;
364
break;
365
case NVM_SECTION_TYPE_REGULATORY_SDP:
366
case NVM_SECTION_TYPE_REGULATORY:
367
mvm->nvm_reg_blob.data = temp;
368
mvm->nvm_reg_blob.size = ret;
369
break;
370
default:
371
if (section == mvm->trans->mac_cfg->base->nvm_hw_section_num) {
372
mvm->nvm_hw_blob.data = temp;
373
mvm->nvm_hw_blob.size = ret;
374
break;
375
}
376
}
377
#endif
378
}
379
if (!size_read)
380
IWL_ERR(mvm, "OTP is blank\n");
381
kfree(nvm_buffer);
382
383
/* Only if PNVM selected in the mod param - load external NVM */
384
if (mvm->nvm_file_name) {
385
/* read External NVM file from the mod param */
386
ret = iwl_read_external_nvm(mvm->trans, mvm->nvm_file_name,
387
mvm->nvm_sections);
388
if (ret)
389
return ret;
390
}
391
392
/* parse the relevant nvm sections */
393
mvm->nvm_data = iwl_parse_nvm_sections(mvm);
394
if (!mvm->nvm_data)
395
return -ENODATA;
396
IWL_DEBUG_EEPROM(mvm->trans->dev, "nvm version = %x\n",
397
mvm->nvm_data->nvm_version);
398
399
return ret < 0 ? ret : 0;
400
}
401
402
struct iwl_mcc_update_resp_v8 *
403
iwl_mvm_update_mcc(struct iwl_mvm *mvm, const char *alpha2,
404
enum iwl_mcc_source src_id)
405
{
406
struct iwl_mcc_update_cmd mcc_update_cmd = {
407
.mcc = cpu_to_le16(alpha2[0] << 8 | alpha2[1]),
408
.source_id = (u8)src_id,
409
};
410
struct iwl_mcc_update_resp_v8 *resp_cp;
411
struct iwl_rx_packet *pkt;
412
struct iwl_host_cmd cmd = {
413
.id = MCC_UPDATE_CMD,
414
.flags = CMD_WANT_SKB | CMD_SEND_IN_RFKILL,
415
.data = { &mcc_update_cmd },
416
};
417
418
int ret, resp_ver;
419
u32 status;
420
int resp_len, n_channels;
421
u16 mcc;
422
423
if (WARN_ON_ONCE(!iwl_mvm_is_lar_supported(mvm)))
424
return ERR_PTR(-EOPNOTSUPP);
425
426
cmd.len[0] = sizeof(struct iwl_mcc_update_cmd);
427
428
IWL_DEBUG_LAR(mvm, "send MCC update to FW with '%c%c' src = %d\n",
429
alpha2[0], alpha2[1], src_id);
430
431
ret = iwl_mvm_send_cmd(mvm, &cmd);
432
if (ret)
433
return ERR_PTR(ret);
434
435
pkt = cmd.resp_pkt;
436
437
resp_ver = iwl_fw_lookup_notif_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP,
438
MCC_UPDATE_CMD, 0);
439
440
/* Extract MCC response */
441
if (resp_ver >= 8) {
442
struct iwl_mcc_update_resp_v8 *mcc_resp_v8 = (void *)pkt->data;
443
444
n_channels = __le32_to_cpu(mcc_resp_v8->n_channels);
445
if (iwl_rx_packet_payload_len(pkt) !=
446
struct_size(mcc_resp_v8, channels, n_channels)) {
447
resp_cp = ERR_PTR(-EINVAL);
448
goto exit;
449
}
450
resp_len = struct_size(resp_cp, channels, n_channels);
451
resp_cp = kzalloc(resp_len, GFP_KERNEL);
452
if (!resp_cp) {
453
resp_cp = ERR_PTR(-ENOMEM);
454
goto exit;
455
}
456
resp_cp->status = mcc_resp_v8->status;
457
resp_cp->mcc = mcc_resp_v8->mcc;
458
resp_cp->cap = mcc_resp_v8->cap;
459
resp_cp->source_id = mcc_resp_v8->source_id;
460
resp_cp->time = mcc_resp_v8->time;
461
resp_cp->geo_info = mcc_resp_v8->geo_info;
462
resp_cp->n_channels = mcc_resp_v8->n_channels;
463
memcpy(resp_cp->channels, mcc_resp_v8->channels,
464
n_channels * sizeof(__le32));
465
} else if (fw_has_capa(&mvm->fw->ucode_capa,
466
IWL_UCODE_TLV_CAPA_MCC_UPDATE_11AX_SUPPORT)) {
467
struct iwl_mcc_update_resp_v4 *mcc_resp_v4 = (void *)pkt->data;
468
469
n_channels = __le32_to_cpu(mcc_resp_v4->n_channels);
470
if (iwl_rx_packet_payload_len(pkt) !=
471
struct_size(mcc_resp_v4, channels, n_channels)) {
472
resp_cp = ERR_PTR(-EINVAL);
473
goto exit;
474
}
475
resp_len = struct_size(resp_cp, channels, n_channels);
476
resp_cp = kzalloc(resp_len, GFP_KERNEL);
477
if (!resp_cp) {
478
resp_cp = ERR_PTR(-ENOMEM);
479
goto exit;
480
}
481
482
resp_cp->status = mcc_resp_v4->status;
483
resp_cp->mcc = mcc_resp_v4->mcc;
484
resp_cp->cap = cpu_to_le32(le16_to_cpu(mcc_resp_v4->cap));
485
resp_cp->source_id = mcc_resp_v4->source_id;
486
resp_cp->time = mcc_resp_v4->time;
487
resp_cp->geo_info = mcc_resp_v4->geo_info;
488
resp_cp->n_channels = mcc_resp_v4->n_channels;
489
memcpy(resp_cp->channels, mcc_resp_v4->channels,
490
n_channels * sizeof(__le32));
491
} else {
492
struct iwl_mcc_update_resp_v3 *mcc_resp_v3 = (void *)pkt->data;
493
494
n_channels = __le32_to_cpu(mcc_resp_v3->n_channels);
495
if (iwl_rx_packet_payload_len(pkt) !=
496
struct_size(mcc_resp_v3, channels, n_channels)) {
497
resp_cp = ERR_PTR(-EINVAL);
498
goto exit;
499
}
500
resp_len = struct_size(resp_cp, channels, n_channels);
501
resp_cp = kzalloc(resp_len, GFP_KERNEL);
502
if (!resp_cp) {
503
resp_cp = ERR_PTR(-ENOMEM);
504
goto exit;
505
}
506
507
resp_cp->status = mcc_resp_v3->status;
508
resp_cp->mcc = mcc_resp_v3->mcc;
509
resp_cp->cap = cpu_to_le32(mcc_resp_v3->cap);
510
resp_cp->source_id = mcc_resp_v3->source_id;
511
resp_cp->time = mcc_resp_v3->time;
512
resp_cp->geo_info = mcc_resp_v3->geo_info;
513
resp_cp->n_channels = mcc_resp_v3->n_channels;
514
memcpy(resp_cp->channels, mcc_resp_v3->channels,
515
n_channels * sizeof(__le32));
516
}
517
518
status = le32_to_cpu(resp_cp->status);
519
520
mcc = le16_to_cpu(resp_cp->mcc);
521
522
/* W/A for a FW/NVM issue - returns 0x00 for the world domain */
523
if (mcc == 0) {
524
mcc = 0x3030; /* "00" - world */
525
resp_cp->mcc = cpu_to_le16(mcc);
526
}
527
528
IWL_DEBUG_LAR(mvm,
529
"MCC response status: 0x%x. new MCC: 0x%x ('%c%c') n_chans: %d\n",
530
status, mcc, mcc >> 8, mcc & 0xff, n_channels);
531
532
exit:
533
iwl_free_resp(&cmd);
534
return resp_cp;
535
}
536
537
int iwl_mvm_init_mcc(struct iwl_mvm *mvm)
538
{
539
bool tlv_lar;
540
bool nvm_lar;
541
int retval;
542
struct ieee80211_regdomain *regd;
543
char mcc[3];
544
545
if (mvm->trans->cfg->nvm_type == IWL_NVM_EXT) {
546
tlv_lar = fw_has_capa(&mvm->fw->ucode_capa,
547
IWL_UCODE_TLV_CAPA_LAR_SUPPORT);
548
nvm_lar = mvm->nvm_data->lar_enabled;
549
if (tlv_lar != nvm_lar)
550
IWL_INFO(mvm,
551
"Conflict between TLV & NVM regarding enabling LAR (TLV = %s NVM =%s)\n",
552
tlv_lar ? "enabled" : "disabled",
553
nvm_lar ? "enabled" : "disabled");
554
}
555
556
if (!iwl_mvm_is_lar_supported(mvm))
557
return 0;
558
559
/*
560
* try to replay the last set MCC to FW. If it doesn't exist,
561
* queue an update to cfg80211 to retrieve the default alpha2 from FW.
562
*/
563
retval = iwl_mvm_init_fw_regd(mvm, true);
564
if (retval != -ENOENT)
565
return retval;
566
567
/*
568
* Driver regulatory hint for initial update, this also informs the
569
* firmware we support wifi location updates.
570
* Disallow scans that might crash the FW while the LAR regdomain
571
* is not set.
572
*/
573
mvm->lar_regdom_set = false;
574
575
regd = iwl_mvm_get_current_regdomain(mvm, NULL);
576
if (IS_ERR_OR_NULL(regd))
577
return -EIO;
578
579
if (iwl_mvm_is_wifi_mcc_supported(mvm) &&
580
!iwl_bios_get_mcc(&mvm->fwrt, mcc)) {
581
kfree(regd);
582
regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, mcc,
583
MCC_SOURCE_BIOS, NULL);
584
if (IS_ERR_OR_NULL(regd))
585
return -EIO;
586
}
587
588
retval = regulatory_set_wiphy_regd_sync(mvm->hw->wiphy, regd);
589
kfree(regd);
590
return retval;
591
}
592
593
void iwl_mvm_rx_chub_update_mcc(struct iwl_mvm *mvm,
594
struct iwl_rx_cmd_buffer *rxb)
595
{
596
struct iwl_rx_packet *pkt = rxb_addr(rxb);
597
struct iwl_mcc_chub_notif *notif = (void *)pkt->data;
598
enum iwl_mcc_source src;
599
char mcc[3];
600
struct ieee80211_regdomain *regd;
601
int wgds_tbl_idx;
602
bool changed = false;
603
604
lockdep_assert_held(&mvm->mutex);
605
606
if (iwl_mvm_is_vif_assoc(mvm) && notif->source_id == MCC_SOURCE_WIFI) {
607
IWL_DEBUG_LAR(mvm, "Ignore mcc update while associated\n");
608
return;
609
}
610
611
if (WARN_ON_ONCE(!iwl_mvm_is_lar_supported(mvm)))
612
return;
613
614
mcc[0] = le16_to_cpu(notif->mcc) >> 8;
615
mcc[1] = le16_to_cpu(notif->mcc) & 0xff;
616
mcc[2] = '\0';
617
src = notif->source_id;
618
619
IWL_DEBUG_LAR(mvm,
620
"RX: received chub update mcc cmd (mcc '%s' src %d)\n",
621
mcc, src);
622
regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, mcc, src, &changed);
623
if (IS_ERR_OR_NULL(regd))
624
return;
625
626
if (!changed) {
627
IWL_DEBUG_LAR(mvm, "RX: No change in the regulatory data\n");
628
goto out;
629
}
630
631
wgds_tbl_idx = iwl_mvm_get_sar_geo_profile(mvm);
632
if (wgds_tbl_idx < 1)
633
IWL_DEBUG_INFO(mvm,
634
"SAR WGDS is disabled or error received (%d)\n",
635
wgds_tbl_idx);
636
else
637
IWL_DEBUG_INFO(mvm, "SAR WGDS: geo profile %d is configured\n",
638
wgds_tbl_idx);
639
640
regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
641
642
out:
643
kfree(regd);
644
}
645
646