1 /*
2 * Copyright (c) 2008-2009 Atheros Communications Inc.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include <linux/kernel.h>
18 #include <linux/export.h>
19 #include <net/cfg80211.h>
20 #include <net/mac80211.h>
21 #include "regd.h"
22 #include "regd_common.h"
23
24 static int __ath_regd_init(struct ath_regulatory *reg);
25
26 /*
27 * This is a set of common rules used by our world regulatory domains.
28 * We have 12 world regulatory domains. To save space we consolidate
29 * the regulatory domains in 5 structures by frequency and change
30 * the flags on our reg_notifier() on a case by case basis.
31 */
32
33 /* Only these channels all allow active scan on all world regulatory domains */
34 #define ATH9K_2GHZ_CH01_11 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0)
35
36 /* We enable active scan on these a case by case basis by regulatory domain */
37 #define ATH9K_2GHZ_CH12_13 REG_RULE(2467-10, 2472+10, 40, 0, 20,\
38 NL80211_RRF_PASSIVE_SCAN)
39 #define ATH9K_2GHZ_CH14 REG_RULE(2484-10, 2484+10, 40, 0, 20,\
40 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_OFDM)
41
42 /* We allow IBSS on these on a case by case basis by regulatory domain */
43 #define ATH9K_5GHZ_5150_5350 REG_RULE(5150-10, 5350+10, 40, 0, 30,\
44 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
45 #define ATH9K_5GHZ_5470_5850 REG_RULE(5470-10, 5850+10, 40, 0, 30,\
46 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
47 #define ATH9K_5GHZ_5725_5850 REG_RULE(5725-10, 5850+10, 40, 0, 30,\
48 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
49
50 #define ATH9K_2GHZ_ALL ATH9K_2GHZ_CH01_11, \
51 ATH9K_2GHZ_CH12_13, \
52 ATH9K_2GHZ_CH14
53
54 #define ATH9K_5GHZ_ALL ATH9K_5GHZ_5150_5350, \
55 ATH9K_5GHZ_5470_5850
56
57 /* This one skips what we call "mid band" */
58 #define ATH9K_5GHZ_NO_MIDBAND ATH9K_5GHZ_5150_5350, \
59 ATH9K_5GHZ_5725_5850
60
61 /* Can be used for:
62 * 0x60, 0x61, 0x62 */
63 static const struct ieee80211_regdomain ath_world_regdom_60_61_62 = {
64 .n_reg_rules = 5,
65 .alpha2 = "99",
66 .reg_rules = {
67 ATH9K_2GHZ_ALL,
68 ATH9K_5GHZ_ALL,
69 }
70 };
71
72 /* Can be used by 0x63 and 0x65 */
73 static const struct ieee80211_regdomain ath_world_regdom_63_65 = {
74 .n_reg_rules = 4,
75 .alpha2 = "99",
76 .reg_rules = {
77 ATH9K_2GHZ_CH01_11,
78 ATH9K_2GHZ_CH12_13,
79 ATH9K_5GHZ_NO_MIDBAND,
80 }
81 };
82
83 /* Can be used by 0x64 only */
84 static const struct ieee80211_regdomain ath_world_regdom_64 = {
85 .n_reg_rules = 3,
86 .alpha2 = "99",
87 .reg_rules = {
88 ATH9K_2GHZ_CH01_11,
89 ATH9K_5GHZ_NO_MIDBAND,
90 }
91 };
92
93 /* Can be used by 0x66 and 0x69 */
94 static const struct ieee80211_regdomain ath_world_regdom_66_69 = {
95 .n_reg_rules = 3,
96 .alpha2 = "99",
97 .reg_rules = {
98 ATH9K_2GHZ_CH01_11,
99 ATH9K_5GHZ_ALL,
100 }
101 };
102
103 /* Can be used by 0x67, 0x68, 0x6A and 0x6C */
104 static const struct ieee80211_regdomain ath_world_regdom_67_68_6A_6C = {
105 .n_reg_rules = 4,
106 .alpha2 = "99",
107 .reg_rules = {
108 ATH9K_2GHZ_CH01_11,
109 ATH9K_2GHZ_CH12_13,
110 ATH9K_5GHZ_ALL,
111 }
112 };
113
is_wwr_sku(u16 regd)114 static inline bool is_wwr_sku(u16 regd)
115 {
116 return ((regd & COUNTRY_ERD_FLAG) != COUNTRY_ERD_FLAG) &&
117 (((regd & WORLD_SKU_MASK) == WORLD_SKU_PREFIX) ||
118 (regd == WORLD));
119 }
120
ath_regd_get_eepromRD(struct ath_regulatory * reg)121 static u16 ath_regd_get_eepromRD(struct ath_regulatory *reg)
122 {
123 return reg->current_rd & ~WORLDWIDE_ROAMING_FLAG;
124 }
125
ath_is_world_regd(struct ath_regulatory * reg)126 bool ath_is_world_regd(struct ath_regulatory *reg)
127 {
128 return is_wwr_sku(ath_regd_get_eepromRD(reg));
129 }
130 EXPORT_SYMBOL(ath_is_world_regd);
131
ath_default_world_regdomain(void)132 static const struct ieee80211_regdomain *ath_default_world_regdomain(void)
133 {
134 /* this is the most restrictive */
135 return &ath_world_regdom_64;
136 }
137
138 static const struct
ath_world_regdomain(struct ath_regulatory * reg)139 ieee80211_regdomain *ath_world_regdomain(struct ath_regulatory *reg)
140 {
141 switch (reg->regpair->regDmnEnum) {
142 case 0x60:
143 case 0x61:
144 case 0x62:
145 return &ath_world_regdom_60_61_62;
146 case 0x63:
147 case 0x65:
148 return &ath_world_regdom_63_65;
149 case 0x64:
150 return &ath_world_regdom_64;
151 case 0x66:
152 case 0x69:
153 return &ath_world_regdom_66_69;
154 case 0x67:
155 case 0x68:
156 case 0x6A:
157 case 0x6C:
158 return &ath_world_regdom_67_68_6A_6C;
159 default:
160 WARN_ON(1);
161 return ath_default_world_regdomain();
162 }
163 }
164
ath_is_49ghz_allowed(u16 regdomain)165 bool ath_is_49ghz_allowed(u16 regdomain)
166 {
167 /* possibly more */
168 return regdomain == MKK9_MKKC;
169 }
170 EXPORT_SYMBOL(ath_is_49ghz_allowed);
171
172 /* Frequency is one where radar detection is required */
ath_is_radar_freq(u16 center_freq)173 static bool ath_is_radar_freq(u16 center_freq)
174 {
175 return (center_freq >= 5260 && center_freq <= 5700);
176 }
177
178 /*
179 * N.B: These exception rules do not apply radar freqs.
180 *
181 * - We enable adhoc (or beaconing) if allowed by 11d
182 * - We enable active scan if the channel is allowed by 11d
183 * - If no country IE has been processed and a we determine we have
184 * received a beacon on a channel we can enable active scan and
185 * adhoc (or beaconing).
186 */
187 static void
ath_reg_apply_beaconing_flags(struct wiphy * wiphy,enum nl80211_reg_initiator initiator)188 ath_reg_apply_beaconing_flags(struct wiphy *wiphy,
189 enum nl80211_reg_initiator initiator)
190 {
191 enum ieee80211_band band;
192 struct ieee80211_supported_band *sband;
193 const struct ieee80211_reg_rule *reg_rule;
194 struct ieee80211_channel *ch;
195 unsigned int i;
196 u32 bandwidth = 0;
197 int r;
198
199 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
200
201 if (!wiphy->bands[band])
202 continue;
203
204 sband = wiphy->bands[band];
205
206 for (i = 0; i < sband->n_channels; i++) {
207
208 ch = &sband->channels[i];
209
210 if (ath_is_radar_freq(ch->center_freq) ||
211 (ch->flags & IEEE80211_CHAN_RADAR))
212 continue;
213
214 if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) {
215 r = freq_reg_info(wiphy,
216 ch->center_freq,
217 bandwidth,
218 ®_rule);
219 if (r)
220 continue;
221 /*
222 * If 11d had a rule for this channel ensure
223 * we enable adhoc/beaconing if it allows us to
224 * use it. Note that we would have disabled it
225 * by applying our static world regdomain by
226 * default during init, prior to calling our
227 * regulatory_hint().
228 */
229 if (!(reg_rule->flags &
230 NL80211_RRF_NO_IBSS))
231 ch->flags &=
232 ~IEEE80211_CHAN_NO_IBSS;
233 if (!(reg_rule->flags &
234 NL80211_RRF_PASSIVE_SCAN))
235 ch->flags &=
236 ~IEEE80211_CHAN_PASSIVE_SCAN;
237 } else {
238 if (ch->beacon_found)
239 ch->flags &= ~(IEEE80211_CHAN_NO_IBSS |
240 IEEE80211_CHAN_PASSIVE_SCAN);
241 }
242 }
243 }
244
245 }
246
247 /* Allows active scan scan on Ch 12 and 13 */
248 static void
ath_reg_apply_active_scan_flags(struct wiphy * wiphy,enum nl80211_reg_initiator initiator)249 ath_reg_apply_active_scan_flags(struct wiphy *wiphy,
250 enum nl80211_reg_initiator initiator)
251 {
252 struct ieee80211_supported_band *sband;
253 struct ieee80211_channel *ch;
254 const struct ieee80211_reg_rule *reg_rule;
255 u32 bandwidth = 0;
256 int r;
257
258 sband = wiphy->bands[IEEE80211_BAND_2GHZ];
259 if (!sband)
260 return;
261
262 /*
263 * If no country IE has been received always enable active scan
264 * on these channels. This is only done for specific regulatory SKUs
265 */
266 if (initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) {
267 ch = &sband->channels[11]; /* CH 12 */
268 if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
269 ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
270 ch = &sband->channels[12]; /* CH 13 */
271 if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
272 ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
273 return;
274 }
275
276 /*
277 * If a country IE has been received check its rule for this
278 * channel first before enabling active scan. The passive scan
279 * would have been enforced by the initial processing of our
280 * custom regulatory domain.
281 */
282
283 ch = &sband->channels[11]; /* CH 12 */
284 r = freq_reg_info(wiphy, ch->center_freq, bandwidth, ®_rule);
285 if (!r) {
286 if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN))
287 if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
288 ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
289 }
290
291 ch = &sband->channels[12]; /* CH 13 */
292 r = freq_reg_info(wiphy, ch->center_freq, bandwidth, ®_rule);
293 if (!r) {
294 if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN))
295 if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
296 ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
297 }
298 }
299
300 /* Always apply Radar/DFS rules on freq range 5260 MHz - 5700 MHz */
ath_reg_apply_radar_flags(struct wiphy * wiphy)301 static void ath_reg_apply_radar_flags(struct wiphy *wiphy)
302 {
303 struct ieee80211_supported_band *sband;
304 struct ieee80211_channel *ch;
305 unsigned int i;
306
307 if (!wiphy->bands[IEEE80211_BAND_5GHZ])
308 return;
309
310 sband = wiphy->bands[IEEE80211_BAND_5GHZ];
311
312 for (i = 0; i < sband->n_channels; i++) {
313 ch = &sband->channels[i];
314 if (!ath_is_radar_freq(ch->center_freq))
315 continue;
316 /* We always enable radar detection/DFS on this
317 * frequency range. Additionally we also apply on
318 * this frequency range:
319 * - If STA mode does not yet have DFS supports disable
320 * active scanning
321 * - If adhoc mode does not support DFS yet then
322 * disable adhoc in the frequency.
323 * - If AP mode does not yet support radar detection/DFS
324 * do not allow AP mode
325 */
326 if (!(ch->flags & IEEE80211_CHAN_DISABLED))
327 ch->flags |= IEEE80211_CHAN_RADAR |
328 IEEE80211_CHAN_NO_IBSS |
329 IEEE80211_CHAN_PASSIVE_SCAN;
330 }
331 }
332
ath_reg_apply_world_flags(struct wiphy * wiphy,enum nl80211_reg_initiator initiator,struct ath_regulatory * reg)333 static void ath_reg_apply_world_flags(struct wiphy *wiphy,
334 enum nl80211_reg_initiator initiator,
335 struct ath_regulatory *reg)
336 {
337 switch (reg->regpair->regDmnEnum) {
338 case 0x60:
339 case 0x63:
340 case 0x66:
341 case 0x67:
342 case 0x6C:
343 ath_reg_apply_beaconing_flags(wiphy, initiator);
344 break;
345 case 0x68:
346 ath_reg_apply_beaconing_flags(wiphy, initiator);
347 ath_reg_apply_active_scan_flags(wiphy, initiator);
348 break;
349 }
350 }
351
ath_regd_find_country_by_name(char * alpha2)352 static u16 ath_regd_find_country_by_name(char *alpha2)
353 {
354 unsigned int i;
355
356 for (i = 0; i < ARRAY_SIZE(allCountries); i++) {
357 if (!memcmp(allCountries[i].isoName, alpha2, 2))
358 return allCountries[i].countryCode;
359 }
360
361 return -1;
362 }
363
ath_reg_notifier_apply(struct wiphy * wiphy,struct regulatory_request * request,struct ath_regulatory * reg)364 int ath_reg_notifier_apply(struct wiphy *wiphy,
365 struct regulatory_request *request,
366 struct ath_regulatory *reg)
367 {
368 struct ath_common *common = container_of(reg, struct ath_common,
369 regulatory);
370 u16 country_code;
371
372 /* We always apply this */
373 ath_reg_apply_radar_flags(wiphy);
374
375 /*
376 * This would happen when we have sent a custom regulatory request
377 * a world regulatory domain and the scheduler hasn't yet processed
378 * any pending requests in the queue.
379 */
380 if (!request)
381 return 0;
382
383 switch (request->initiator) {
384 case NL80211_REGDOM_SET_BY_CORE:
385 /*
386 * If common->reg_world_copy is world roaming it means we *were*
387 * world roaming... so we now have to restore that data.
388 */
389 if (!ath_is_world_regd(&common->reg_world_copy))
390 break;
391
392 memcpy(reg, &common->reg_world_copy,
393 sizeof(struct ath_regulatory));
394 break;
395 case NL80211_REGDOM_SET_BY_DRIVER:
396 case NL80211_REGDOM_SET_BY_USER:
397 break;
398 case NL80211_REGDOM_SET_BY_COUNTRY_IE:
399 if (!ath_is_world_regd(reg))
400 break;
401
402 country_code = ath_regd_find_country_by_name(request->alpha2);
403 if (country_code == (u16) -1)
404 break;
405
406 reg->current_rd = COUNTRY_ERD_FLAG;
407 reg->current_rd |= country_code;
408
409 printk(KERN_DEBUG "ath: regdomain 0x%0x updated by CountryIE\n",
410 reg->current_rd);
411 __ath_regd_init(reg);
412
413 ath_reg_apply_world_flags(wiphy, request->initiator, reg);
414
415 break;
416 }
417
418 return 0;
419 }
420 EXPORT_SYMBOL(ath_reg_notifier_apply);
421
ath_regd_is_eeprom_valid(struct ath_regulatory * reg)422 static bool ath_regd_is_eeprom_valid(struct ath_regulatory *reg)
423 {
424 u16 rd = ath_regd_get_eepromRD(reg);
425 int i;
426
427 if (rd & COUNTRY_ERD_FLAG) {
428 /* EEPROM value is a country code */
429 u16 cc = rd & ~COUNTRY_ERD_FLAG;
430 printk(KERN_DEBUG
431 "ath: EEPROM indicates we should expect "
432 "a country code\n");
433 for (i = 0; i < ARRAY_SIZE(allCountries); i++)
434 if (allCountries[i].countryCode == cc)
435 return true;
436 } else {
437 /* EEPROM value is a regpair value */
438 if (rd != CTRY_DEFAULT)
439 printk(KERN_DEBUG "ath: EEPROM indicates we "
440 "should expect a direct regpair map\n");
441 for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++)
442 if (regDomainPairs[i].regDmnEnum == rd)
443 return true;
444 }
445 printk(KERN_DEBUG
446 "ath: invalid regulatory domain/country code 0x%x\n", rd);
447 return false;
448 }
449
450 /* EEPROM country code to regpair mapping */
451 static struct country_code_to_enum_rd*
ath_regd_find_country(u16 countryCode)452 ath_regd_find_country(u16 countryCode)
453 {
454 int i;
455
456 for (i = 0; i < ARRAY_SIZE(allCountries); i++) {
457 if (allCountries[i].countryCode == countryCode)
458 return &allCountries[i];
459 }
460 return NULL;
461 }
462
463 /* EEPROM rd code to regpair mapping */
464 static struct country_code_to_enum_rd*
ath_regd_find_country_by_rd(int regdmn)465 ath_regd_find_country_by_rd(int regdmn)
466 {
467 int i;
468
469 for (i = 0; i < ARRAY_SIZE(allCountries); i++) {
470 if (allCountries[i].regDmnEnum == regdmn)
471 return &allCountries[i];
472 }
473 return NULL;
474 }
475
476 /* Returns the map of the EEPROM set RD to a country code */
ath_regd_get_default_country(u16 rd)477 static u16 ath_regd_get_default_country(u16 rd)
478 {
479 if (rd & COUNTRY_ERD_FLAG) {
480 struct country_code_to_enum_rd *country = NULL;
481 u16 cc = rd & ~COUNTRY_ERD_FLAG;
482
483 country = ath_regd_find_country(cc);
484 if (country != NULL)
485 return cc;
486 }
487
488 return CTRY_DEFAULT;
489 }
490
491 static struct reg_dmn_pair_mapping*
ath_get_regpair(int regdmn)492 ath_get_regpair(int regdmn)
493 {
494 int i;
495
496 if (regdmn == NO_ENUMRD)
497 return NULL;
498 for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) {
499 if (regDomainPairs[i].regDmnEnum == regdmn)
500 return ®DomainPairs[i];
501 }
502 return NULL;
503 }
504
505 static int
ath_regd_init_wiphy(struct ath_regulatory * reg,struct wiphy * wiphy,int (* reg_notifier)(struct wiphy * wiphy,struct regulatory_request * request))506 ath_regd_init_wiphy(struct ath_regulatory *reg,
507 struct wiphy *wiphy,
508 int (*reg_notifier)(struct wiphy *wiphy,
509 struct regulatory_request *request))
510 {
511 const struct ieee80211_regdomain *regd;
512
513 wiphy->reg_notifier = reg_notifier;
514 wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
515
516 if (ath_is_world_regd(reg)) {
517 /*
518 * Anything applied here (prior to wiphy registration) gets
519 * saved on the wiphy orig_* parameters
520 */
521 regd = ath_world_regdomain(reg);
522 wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
523 } else {
524 /*
525 * This gets applied in the case of the absence of CRDA,
526 * it's our own custom world regulatory domain, similar to
527 * cfg80211's but we enable passive scanning.
528 */
529 regd = ath_default_world_regdomain();
530 }
531 wiphy_apply_custom_regulatory(wiphy, regd);
532 ath_reg_apply_radar_flags(wiphy);
533 ath_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER, reg);
534 return 0;
535 }
536
537 /*
538 * Some users have reported their EEPROM programmed with
539 * 0x8000 set, this is not a supported regulatory domain
540 * but since we have more than one user with it we need
541 * a solution for them. We default to 0x64, which is the
542 * default Atheros world regulatory domain.
543 */
ath_regd_sanitize(struct ath_regulatory * reg)544 static void ath_regd_sanitize(struct ath_regulatory *reg)
545 {
546 if (reg->current_rd != COUNTRY_ERD_FLAG)
547 return;
548 printk(KERN_DEBUG "ath: EEPROM regdomain sanitized\n");
549 reg->current_rd = 0x64;
550 }
551
__ath_regd_init(struct ath_regulatory * reg)552 static int __ath_regd_init(struct ath_regulatory *reg)
553 {
554 struct country_code_to_enum_rd *country = NULL;
555 u16 regdmn;
556
557 if (!reg)
558 return -EINVAL;
559
560 ath_regd_sanitize(reg);
561
562 printk(KERN_DEBUG "ath: EEPROM regdomain: 0x%0x\n", reg->current_rd);
563
564 if (!ath_regd_is_eeprom_valid(reg)) {
565 printk(KERN_ERR "ath: Invalid EEPROM contents\n");
566 return -EINVAL;
567 }
568
569 regdmn = ath_regd_get_eepromRD(reg);
570 reg->country_code = ath_regd_get_default_country(regdmn);
571
572 if (reg->country_code == CTRY_DEFAULT &&
573 regdmn == CTRY_DEFAULT) {
574 printk(KERN_DEBUG "ath: EEPROM indicates default "
575 "country code should be used\n");
576 reg->country_code = CTRY_UNITED_STATES;
577 }
578
579 if (reg->country_code == CTRY_DEFAULT) {
580 country = NULL;
581 } else {
582 printk(KERN_DEBUG "ath: doing EEPROM country->regdmn "
583 "map search\n");
584 country = ath_regd_find_country(reg->country_code);
585 if (country == NULL) {
586 printk(KERN_DEBUG
587 "ath: no valid country maps found for "
588 "country code: 0x%0x\n",
589 reg->country_code);
590 return -EINVAL;
591 } else {
592 regdmn = country->regDmnEnum;
593 printk(KERN_DEBUG "ath: country maps to "
594 "regdmn code: 0x%0x\n",
595 regdmn);
596 }
597 }
598
599 reg->regpair = ath_get_regpair(regdmn);
600
601 if (!reg->regpair) {
602 printk(KERN_DEBUG "ath: "
603 "No regulatory domain pair found, cannot continue\n");
604 return -EINVAL;
605 }
606
607 if (!country)
608 country = ath_regd_find_country_by_rd(regdmn);
609
610 if (country) {
611 reg->alpha2[0] = country->isoName[0];
612 reg->alpha2[1] = country->isoName[1];
613 } else {
614 reg->alpha2[0] = '0';
615 reg->alpha2[1] = '0';
616 }
617
618 printk(KERN_DEBUG "ath: Country alpha2 being used: %c%c\n",
619 reg->alpha2[0], reg->alpha2[1]);
620 printk(KERN_DEBUG "ath: Regpair used: 0x%0x\n",
621 reg->regpair->regDmnEnum);
622
623 return 0;
624 }
625
626 int
ath_regd_init(struct ath_regulatory * reg,struct wiphy * wiphy,int (* reg_notifier)(struct wiphy * wiphy,struct regulatory_request * request))627 ath_regd_init(struct ath_regulatory *reg,
628 struct wiphy *wiphy,
629 int (*reg_notifier)(struct wiphy *wiphy,
630 struct regulatory_request *request))
631 {
632 struct ath_common *common = container_of(reg, struct ath_common,
633 regulatory);
634 int r;
635
636 r = __ath_regd_init(reg);
637 if (r)
638 return r;
639
640 if (ath_is_world_regd(reg))
641 memcpy(&common->reg_world_copy, reg,
642 sizeof(struct ath_regulatory));
643
644 ath_regd_init_wiphy(reg, wiphy, reg_notifier);
645
646 return 0;
647 }
648 EXPORT_SYMBOL(ath_regd_init);
649
ath_regd_get_band_ctl(struct ath_regulatory * reg,enum ieee80211_band band)650 u32 ath_regd_get_band_ctl(struct ath_regulatory *reg,
651 enum ieee80211_band band)
652 {
653 if (!reg->regpair ||
654 (reg->country_code == CTRY_DEFAULT &&
655 is_wwr_sku(ath_regd_get_eepromRD(reg)))) {
656 return SD_NO_CTL;
657 }
658
659 switch (band) {
660 case IEEE80211_BAND_2GHZ:
661 return reg->regpair->reg_2ghz_ctl;
662 case IEEE80211_BAND_5GHZ:
663 return reg->regpair->reg_5ghz_ctl;
664 default:
665 return NO_CTL;
666 }
667 }
668 EXPORT_SYMBOL(ath_regd_get_band_ctl);
669