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 */
iwl_nvm_write_chunk(struct iwl_mvm * mvm,u16 section,u16 offset,u16 length,const u8 * data)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
iwl_nvm_read_chunk(struct iwl_mvm * mvm,u16 section,u16 offset,u16 length,u8 * data)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
iwl_nvm_write_section(struct iwl_mvm * mvm,u16 section,const u8 * data,u16 length)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 */
iwl_nvm_read_section(struct iwl_mvm * mvm,u16 section,u8 * data,u32 size_read)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 *
iwl_parse_nvm_sections(struct iwl_mvm * mvm)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 */
iwl_mvm_load_nvm_to_nic(struct iwl_mvm * mvm)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
iwl_nvm_init(struct iwl_mvm * mvm)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 *
iwl_mvm_update_mcc(struct iwl_mvm * mvm,const char * alpha2,enum iwl_mcc_source src_id)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
iwl_mvm_init_mcc(struct iwl_mvm * mvm)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
iwl_mvm_rx_chub_update_mcc(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)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