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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 <net/cfg80211.h>
19#include <net/mac80211.h>
20#include "regd.h"
21#include "regd_common.h"
22
23/*
24 * This is a set of common rules used by our world regulatory domains.
25 * We have 12 world regulatory domains. To save space we consolidate
26 * the regulatory domains in 5 structures by frequency and change
27 * the flags on our reg_notifier() on a case by case basis.
28 */
29
30/* Only these channels all allow active scan on all world regulatory domains */
31#define ATH9K_2GHZ_CH01_11 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0)
32
33/* We enable active scan on these a case by case basis by regulatory domain */
34#define ATH9K_2GHZ_CH12_13 REG_RULE(2467-10, 2472+10, 40, 0, 20,\
35 NL80211_RRF_PASSIVE_SCAN)
36#define ATH9K_2GHZ_CH14 REG_RULE(2484-10, 2484+10, 40, 0, 20,\
37 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_OFDM)
38
39/* We allow IBSS on these on a case by case basis by regulatory domain */
40#define ATH9K_5GHZ_5150_5350 REG_RULE(5150-10, 5350+10, 40, 0, 30,\
41 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
42#define ATH9K_5GHZ_5470_5850 REG_RULE(5470-10, 5850+10, 40, 0, 30,\
43 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
44#define ATH9K_5GHZ_5725_5850 REG_RULE(5725-10, 5850+10, 40, 0, 30,\
45 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
46
47#define ATH9K_2GHZ_ALL ATH9K_2GHZ_CH01_11, \
48 ATH9K_2GHZ_CH12_13, \
49 ATH9K_2GHZ_CH14
50
51#define ATH9K_5GHZ_ALL ATH9K_5GHZ_5150_5350, \
52 ATH9K_5GHZ_5470_5850
53
54/* This one skips what we call "mid band" */
55#define ATH9K_5GHZ_NO_MIDBAND ATH9K_5GHZ_5150_5350, \
56 ATH9K_5GHZ_5725_5850
57
58/* Can be used for:
59 * 0x60, 0x61, 0x62 */
60static const struct ieee80211_regdomain ath_world_regdom_60_61_62 = {
61 .n_reg_rules = 5,
62 .alpha2 = "99",
63 .reg_rules = {
64 ATH9K_2GHZ_ALL,
65 ATH9K_5GHZ_ALL,
66 }
67};
68
69/* Can be used by 0x63 and 0x65 */
70static const struct ieee80211_regdomain ath_world_regdom_63_65 = {
71 .n_reg_rules = 4,
72 .alpha2 = "99",
73 .reg_rules = {
74 ATH9K_2GHZ_CH01_11,
75 ATH9K_2GHZ_CH12_13,
76 ATH9K_5GHZ_NO_MIDBAND,
77 }
78};
79
80/* Can be used by 0x64 only */
81static const struct ieee80211_regdomain ath_world_regdom_64 = {
82 .n_reg_rules = 3,
83 .alpha2 = "99",
84 .reg_rules = {
85 ATH9K_2GHZ_CH01_11,
86 ATH9K_5GHZ_NO_MIDBAND,
87 }
88};
89
90/* Can be used by 0x66 and 0x69 */
91static const struct ieee80211_regdomain ath_world_regdom_66_69 = {
92 .n_reg_rules = 3,
93 .alpha2 = "99",
94 .reg_rules = {
95 ATH9K_2GHZ_CH01_11,
96 ATH9K_5GHZ_ALL,
97 }
98};
99
100/* Can be used by 0x67, 0x68, 0x6A and 0x6C */
101static const struct ieee80211_regdomain ath_world_regdom_67_68_6A_6C = {
102 .n_reg_rules = 4,
103 .alpha2 = "99",
104 .reg_rules = {
105 ATH9K_2GHZ_CH01_11,
106 ATH9K_2GHZ_CH12_13,
107 ATH9K_5GHZ_ALL,
108 }
109};
110
111static inline bool is_wwr_sku(u16 regd)
112{
113 return ((regd & COUNTRY_ERD_FLAG) != COUNTRY_ERD_FLAG) &&
114 (((regd & WORLD_SKU_MASK) == WORLD_SKU_PREFIX) ||
115 (regd == WORLD));
116}
117
118static u16 ath_regd_get_eepromRD(struct ath_regulatory *reg)
119{
120 return reg->current_rd & ~WORLDWIDE_ROAMING_FLAG;
121}
122
123bool ath_is_world_regd(struct ath_regulatory *reg)
124{
125 return is_wwr_sku(ath_regd_get_eepromRD(reg));
126}
127EXPORT_SYMBOL(ath_is_world_regd);
128
129static const struct ieee80211_regdomain *ath_default_world_regdomain(void)
130{
131 /* this is the most restrictive */
132 return &ath_world_regdom_64;
133}
134
135static const struct
136ieee80211_regdomain *ath_world_regdomain(struct ath_regulatory *reg)
137{
138 switch (reg->regpair->regDmnEnum) {
139 case 0x60:
140 case 0x61:
141 case 0x62:
142 return &ath_world_regdom_60_61_62;
143 case 0x63:
144 case 0x65:
145 return &ath_world_regdom_63_65;
146 case 0x64:
147 return &ath_world_regdom_64;
148 case 0x66:
149 case 0x69:
150 return &ath_world_regdom_66_69;
151 case 0x67:
152 case 0x68:
153 case 0x6A:
154 case 0x6C:
155 return &ath_world_regdom_67_68_6A_6C;
156 default:
157 WARN_ON(1);
158 return ath_default_world_regdomain();
159 }
160}
161
162bool ath_is_49ghz_allowed(u16 regdomain)
163{
164 /* possibly more */
165 return regdomain == MKK9_MKKC;
166}
167EXPORT_SYMBOL(ath_is_49ghz_allowed);
168
169/* Frequency is one where radar detection is required */
170static bool ath_is_radar_freq(u16 center_freq)
171{
172 return (center_freq >= 5260 && center_freq <= 5700);
173}
174
175/*
176 * N.B: These exception rules do not apply radar freqs.
177 *
178 * - We enable adhoc (or beaconing) if allowed by 11d
179 * - We enable active scan if the channel is allowed by 11d
180 * - If no country IE has been processed and a we determine we have
181 * received a beacon on a channel we can enable active scan and
182 * adhoc (or beaconing).
183 */
184static void
185ath_reg_apply_beaconing_flags(struct wiphy *wiphy,
186 enum nl80211_reg_initiator initiator)
187{
188 enum ieee80211_band band;
189 struct ieee80211_supported_band *sband;
190 const struct ieee80211_reg_rule *reg_rule;
191 struct ieee80211_channel *ch;
192 unsigned int i;
193 u32 bandwidth = 0;
194 int r;
195
196 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
197
198 if (!wiphy->bands[band])
199 continue;
200
201 sband = wiphy->bands[band];
202
203 for (i = 0; i < sband->n_channels; i++) {
204
205 ch = &sband->channels[i];
206
207 if (ath_is_radar_freq(ch->center_freq) ||
208 (ch->flags & IEEE80211_CHAN_RADAR))
209 continue;
210
211 if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) {
212 r = freq_reg_info(wiphy,
213 ch->center_freq,
214 bandwidth,
215 ®_rule);
216 if (r)
217 continue;
218 /*
219 * If 11d had a rule for this channel ensure
220 * we enable adhoc/beaconing if it allows us to
221 * use it. Note that we would have disabled it
222 * by applying our static world regdomain by
223 * default during init, prior to calling our
224 * regulatory_hint().
225 */
226 if (!(reg_rule->flags &
227 NL80211_RRF_NO_IBSS))
228 ch->flags &=
229 ~IEEE80211_CHAN_NO_IBSS;
230 if (!(reg_rule->flags &
231 NL80211_RRF_PASSIVE_SCAN))
232 ch->flags &=
233 ~IEEE80211_CHAN_PASSIVE_SCAN;
234 } else {
235 if (ch->beacon_found)
236 ch->flags &= ~(IEEE80211_CHAN_NO_IBSS |
237 IEEE80211_CHAN_PASSIVE_SCAN);
238 }
239 }
240 }
241
242}
243
244/* Allows active scan scan on Ch 12 and 13 */
245static void
246ath_reg_apply_active_scan_flags(struct wiphy *wiphy,
247 enum nl80211_reg_initiator initiator)
248{
249 struct ieee80211_supported_band *sband;
250 struct ieee80211_channel *ch;
251 const struct ieee80211_reg_rule *reg_rule;
252 u32 bandwidth = 0;
253 int r;
254
255 sband = wiphy->bands[IEEE80211_BAND_2GHZ];
256
257 /*
258 * If no country IE has been received always enable active scan
259 * on these channels. This is only done for specific regulatory SKUs
260 */
261 if (initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) {
262 ch = &sband->channels[11]; /* CH 12 */
263 if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
264 ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
265 ch = &sband->channels[12]; /* CH 13 */
266 if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
267 ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
268 return;
269 }
270
271 /*
272 * If a country IE has been received check its rule for this
273 * channel first before enabling active scan. The passive scan
274 * would have been enforced by the initial processing of our
275 * custom regulatory domain.
276 */
277
278 ch = &sband->channels[11]; /* CH 12 */
279 r = freq_reg_info(wiphy, ch->center_freq, bandwidth, ®_rule);
280 if (!r) {
281 if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN))
282 if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
283 ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
284 }
285
286 ch = &sband->channels[12]; /* CH 13 */
287 r = freq_reg_info(wiphy, ch->center_freq, bandwidth, ®_rule);
288 if (!r) {
289 if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN))
290 if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
291 ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
292 }
293}
294
295/* Always apply Radar/DFS rules on freq range 5260 MHz - 5700 MHz */
296static void ath_reg_apply_radar_flags(struct wiphy *wiphy)
297{
298 struct ieee80211_supported_band *sband;
299 struct ieee80211_channel *ch;
300 unsigned int i;
301
302 if (!wiphy->bands[IEEE80211_BAND_5GHZ])
303 return;
304
305 sband = wiphy->bands[IEEE80211_BAND_5GHZ];
306
307 for (i = 0; i < sband->n_channels; i++) {
308 ch = &sband->channels[i];
309 if (!ath_is_radar_freq(ch->center_freq))
310 continue;
311 /* We always enable radar detection/DFS on this
312 * frequency range. Additionally we also apply on
313 * this frequency range:
314 * - If STA mode does not yet have DFS supports disable
315 * active scanning
316 * - If adhoc mode does not support DFS yet then
317 * disable adhoc in the frequency.
318 * - If AP mode does not yet support radar detection/DFS
319 * do not allow AP mode
320 */
321 if (!(ch->flags & IEEE80211_CHAN_DISABLED))
322 ch->flags |= IEEE80211_CHAN_RADAR |
323 IEEE80211_CHAN_NO_IBSS |
324 IEEE80211_CHAN_PASSIVE_SCAN;
325 }
326}
327
328static void ath_reg_apply_world_flags(struct wiphy *wiphy,
329 enum nl80211_reg_initiator initiator,
330 struct ath_regulatory *reg)
331{
332 switch (reg->regpair->regDmnEnum) {
333 case 0x60:
334 case 0x63:
335 case 0x66:
336 case 0x67:
337 case 0x6C:
338 ath_reg_apply_beaconing_flags(wiphy, initiator);
339 break;
340 case 0x68:
341 ath_reg_apply_beaconing_flags(wiphy, initiator);
342 ath_reg_apply_active_scan_flags(wiphy, initiator);
343 break;
344 }
345}
346
347int ath_reg_notifier_apply(struct wiphy *wiphy,
348 struct regulatory_request *request,
349 struct ath_regulatory *reg)
350{
351 /* We always apply this */
352 ath_reg_apply_radar_flags(wiphy);
353
354 /*
355 * This would happen when we have sent a custom regulatory request
356 * a world regulatory domain and the scheduler hasn't yet processed
357 * any pending requests in the queue.
358 */
359 if (!request)
360 return 0;
361
362 switch (request->initiator) {
363 case NL80211_REGDOM_SET_BY_DRIVER:
364 case NL80211_REGDOM_SET_BY_CORE:
365 case NL80211_REGDOM_SET_BY_USER:
366 break;
367 case NL80211_REGDOM_SET_BY_COUNTRY_IE:
368 if (ath_is_world_regd(reg))
369 ath_reg_apply_world_flags(wiphy, request->initiator,
370 reg);
371 break;
372 }
373
374 return 0;
375}
376EXPORT_SYMBOL(ath_reg_notifier_apply);
377
378static bool ath_regd_is_eeprom_valid(struct ath_regulatory *reg)
379{
380 u16 rd = ath_regd_get_eepromRD(reg);
381 int i;
382
383 if (rd & COUNTRY_ERD_FLAG) {
384 /* EEPROM value is a country code */
385 u16 cc = rd & ~COUNTRY_ERD_FLAG;
386 printk(KERN_DEBUG
387 "ath: EEPROM indicates we should expect "
388 "a country code\n");
389 for (i = 0; i < ARRAY_SIZE(allCountries); i++)
390 if (allCountries[i].countryCode == cc)
391 return true;
392 } else {
393 /* EEPROM value is a regpair value */
394 if (rd != CTRY_DEFAULT)
395 printk(KERN_DEBUG "ath: EEPROM indicates we "
396 "should expect a direct regpair map\n");
397 for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++)
398 if (regDomainPairs[i].regDmnEnum == rd)
399 return true;
400 }
401 printk(KERN_DEBUG
402 "ath: invalid regulatory domain/country code 0x%x\n", rd);
403 return false;
404}
405
406/* EEPROM country code to regpair mapping */
407static struct country_code_to_enum_rd*
408ath_regd_find_country(u16 countryCode)
409{
410 int i;
411
412 for (i = 0; i < ARRAY_SIZE(allCountries); i++) {
413 if (allCountries[i].countryCode == countryCode)
414 return &allCountries[i];
415 }
416 return NULL;
417}
418
419/* EEPROM rd code to regpair mapping */
420static struct country_code_to_enum_rd*
421ath_regd_find_country_by_rd(int regdmn)
422{
423 int i;
424
425 for (i = 0; i < ARRAY_SIZE(allCountries); i++) {
426 if (allCountries[i].regDmnEnum == regdmn)
427 return &allCountries[i];
428 }
429 return NULL;
430}
431
432/* Returns the map of the EEPROM set RD to a country code */
433static u16 ath_regd_get_default_country(u16 rd)
434{
435 if (rd & COUNTRY_ERD_FLAG) {
436 struct country_code_to_enum_rd *country = NULL;
437 u16 cc = rd & ~COUNTRY_ERD_FLAG;
438
439 country = ath_regd_find_country(cc);
440 if (country != NULL)
441 return cc;
442 }
443
444 return CTRY_DEFAULT;
445}
446
447static struct reg_dmn_pair_mapping*
448ath_get_regpair(int regdmn)
449{
450 int i;
451
452 if (regdmn == NO_ENUMRD)
453 return NULL;
454 for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) {
455 if (regDomainPairs[i].regDmnEnum == regdmn)
456 return ®DomainPairs[i];
457 }
458 return NULL;
459}
460
461static int
462ath_regd_init_wiphy(struct ath_regulatory *reg,
463 struct wiphy *wiphy,
464 int (*reg_notifier)(struct wiphy *wiphy,
465 struct regulatory_request *request))
466{
467 const struct ieee80211_regdomain *regd;
468
469 wiphy->reg_notifier = reg_notifier;
470 wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
471
472 if (ath_is_world_regd(reg)) {
473 /*
474 * Anything applied here (prior to wiphy registration) gets
475 * saved on the wiphy orig_* parameters
476 */
477 regd = ath_world_regdomain(reg);
478 wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
479 } else {
480 /*
481 * This gets applied in the case of the absence of CRDA,
482 * it's our own custom world regulatory domain, similar to
483 * cfg80211's but we enable passive scanning.
484 */
485 regd = ath_default_world_regdomain();
486 }
487 wiphy_apply_custom_regulatory(wiphy, regd);
488 ath_reg_apply_radar_flags(wiphy);
489 ath_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER, reg);
490 return 0;
491}
492
493/*
494 * Some users have reported their EEPROM programmed with
495 * 0x8000 set, this is not a supported regulatory domain
496 * but since we have more than one user with it we need
497 * a solution for them. We default to 0x64, which is the
498 * default Atheros world regulatory domain.
499 */
500static void ath_regd_sanitize(struct ath_regulatory *reg)
501{
502 if (reg->current_rd != COUNTRY_ERD_FLAG)
503 return;
504 printk(KERN_DEBUG "ath: EEPROM regdomain sanitized\n");
505 reg->current_rd = 0x64;
506}
507
508int
509ath_regd_init(struct ath_regulatory *reg,
510 struct wiphy *wiphy,
511 int (*reg_notifier)(struct wiphy *wiphy,
512 struct regulatory_request *request))
513{
514 struct country_code_to_enum_rd *country = NULL;
515 u16 regdmn;
516
517 if (!reg)
518 return -EINVAL;
519
520 ath_regd_sanitize(reg);
521
522 printk(KERN_DEBUG "ath: EEPROM regdomain: 0x%0x\n", reg->current_rd);
523
524 if (!ath_regd_is_eeprom_valid(reg)) {
525 printk(KERN_ERR "ath: Invalid EEPROM contents\n");
526 return -EINVAL;
527 }
528
529 regdmn = ath_regd_get_eepromRD(reg);
530 reg->country_code = ath_regd_get_default_country(regdmn);
531
532 if (reg->country_code == CTRY_DEFAULT &&
533 regdmn == CTRY_DEFAULT) {
534 printk(KERN_DEBUG "ath: EEPROM indicates default "
535 "country code should be used\n");
536 reg->country_code = CTRY_UNITED_STATES;
537 }
538
539 if (reg->country_code == CTRY_DEFAULT) {
540 country = NULL;
541 } else {
542 printk(KERN_DEBUG "ath: doing EEPROM country->regdmn "
543 "map search\n");
544 country = ath_regd_find_country(reg->country_code);
545 if (country == NULL) {
546 printk(KERN_DEBUG
547 "ath: no valid country maps found for "
548 "country code: 0x%0x\n",
549 reg->country_code);
550 return -EINVAL;
551 } else {
552 regdmn = country->regDmnEnum;
553 printk(KERN_DEBUG "ath: country maps to "
554 "regdmn code: 0x%0x\n",
555 regdmn);
556 }
557 }
558
559 reg->regpair = ath_get_regpair(regdmn);
560
561 if (!reg->regpair) {
562 printk(KERN_DEBUG "ath: "
563 "No regulatory domain pair found, cannot continue\n");
564 return -EINVAL;
565 }
566
567 if (!country)
568 country = ath_regd_find_country_by_rd(regdmn);
569
570 if (country) {
571 reg->alpha2[0] = country->isoName[0];
572 reg->alpha2[1] = country->isoName[1];
573 } else {
574 reg->alpha2[0] = '0';
575 reg->alpha2[1] = '0';
576 }
577
578 printk(KERN_DEBUG "ath: Country alpha2 being used: %c%c\n",
579 reg->alpha2[0], reg->alpha2[1]);
580 printk(KERN_DEBUG "ath: Regpair used: 0x%0x\n",
581 reg->regpair->regDmnEnum);
582
583 ath_regd_init_wiphy(reg, wiphy, reg_notifier);
584 return 0;
585}
586EXPORT_SYMBOL(ath_regd_init);
587
588u32 ath_regd_get_band_ctl(struct ath_regulatory *reg,
589 enum ieee80211_band band)
590{
591 if (!reg->regpair ||
592 (reg->country_code == CTRY_DEFAULT &&
593 is_wwr_sku(ath_regd_get_eepromRD(reg)))) {
594 return SD_NO_CTL;
595 }
596
597 switch (band) {
598 case IEEE80211_BAND_2GHZ:
599 return reg->regpair->reg_2ghz_ctl;
600 case IEEE80211_BAND_5GHZ:
601 return reg->regpair->reg_5ghz_ctl;
602 default:
603 return NO_CTL;
604 }
605}
606EXPORT_SYMBOL(ath_regd_get_band_ctl);
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
18
19#include <linux/kernel.h>
20#include <linux/export.h>
21#include <net/cfg80211.h>
22#include <net/mac80211.h>
23#include "regd.h"
24#include "regd_common.h"
25
26static int __ath_regd_init(struct ath_regulatory *reg);
27
28/*
29 * This is a set of common rules used by our world regulatory domains.
30 * We have 12 world regulatory domains. To save space we consolidate
31 * the regulatory domains in 5 structures by frequency and change
32 * the flags on our reg_notifier() on a case by case basis.
33 */
34
35/* Only these channels all allow active scan on all world regulatory domains */
36#define ATH_2GHZ_CH01_11 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0)
37
38/* We enable active scan on these a case by case basis by regulatory domain */
39#define ATH_2GHZ_CH12_13 REG_RULE(2467-10, 2472+10, 40, 0, 20,\
40 NL80211_RRF_NO_IR)
41#define ATH_2GHZ_CH14 REG_RULE(2484-10, 2484+10, 40, 0, 20,\
42 NL80211_RRF_NO_IR | \
43 NL80211_RRF_NO_OFDM)
44
45/* We allow IBSS on these on a case by case basis by regulatory domain */
46#define ATH_5GHZ_5150_5350 REG_RULE(5150-10, 5350+10, 80, 0, 30,\
47 NL80211_RRF_NO_IR)
48#define ATH_5GHZ_5470_5850 REG_RULE(5470-10, 5850+10, 80, 0, 30,\
49 NL80211_RRF_NO_IR)
50#define ATH_5GHZ_5725_5850 REG_RULE(5725-10, 5850+10, 80, 0, 30,\
51 NL80211_RRF_NO_IR)
52
53#define ATH_2GHZ_ALL ATH_2GHZ_CH01_11, \
54 ATH_2GHZ_CH12_13, \
55 ATH_2GHZ_CH14
56
57#define ATH_5GHZ_ALL ATH_5GHZ_5150_5350, \
58 ATH_5GHZ_5470_5850
59
60/* This one skips what we call "mid band" */
61#define ATH_5GHZ_NO_MIDBAND ATH_5GHZ_5150_5350, \
62 ATH_5GHZ_5725_5850
63
64/* Can be used for:
65 * 0x60, 0x61, 0x62 */
66static const struct ieee80211_regdomain ath_world_regdom_60_61_62 = {
67 .n_reg_rules = 5,
68 .alpha2 = "99",
69 .reg_rules = {
70 ATH_2GHZ_ALL,
71 ATH_5GHZ_ALL,
72 }
73};
74
75/* Can be used by 0x63 and 0x65 */
76static const struct ieee80211_regdomain ath_world_regdom_63_65 = {
77 .n_reg_rules = 4,
78 .alpha2 = "99",
79 .reg_rules = {
80 ATH_2GHZ_CH01_11,
81 ATH_2GHZ_CH12_13,
82 ATH_5GHZ_NO_MIDBAND,
83 }
84};
85
86/* Can be used by 0x64 only */
87static const struct ieee80211_regdomain ath_world_regdom_64 = {
88 .n_reg_rules = 3,
89 .alpha2 = "99",
90 .reg_rules = {
91 ATH_2GHZ_CH01_11,
92 ATH_5GHZ_NO_MIDBAND,
93 }
94};
95
96/* Can be used by 0x66 and 0x69 */
97static const struct ieee80211_regdomain ath_world_regdom_66_69 = {
98 .n_reg_rules = 3,
99 .alpha2 = "99",
100 .reg_rules = {
101 ATH_2GHZ_CH01_11,
102 ATH_5GHZ_ALL,
103 }
104};
105
106/* Can be used by 0x67, 0x68, 0x6A and 0x6C */
107static const struct ieee80211_regdomain ath_world_regdom_67_68_6A_6C = {
108 .n_reg_rules = 4,
109 .alpha2 = "99",
110 .reg_rules = {
111 ATH_2GHZ_CH01_11,
112 ATH_2GHZ_CH12_13,
113 ATH_5GHZ_ALL,
114 }
115};
116
117static bool dynamic_country_user_possible(struct ath_regulatory *reg)
118{
119 if (IS_ENABLED(CONFIG_ATH_REG_DYNAMIC_USER_CERT_TESTING))
120 return true;
121
122 switch (reg->country_code) {
123 case CTRY_UNITED_STATES:
124 case CTRY_JAPAN1:
125 case CTRY_JAPAN2:
126 case CTRY_JAPAN3:
127 case CTRY_JAPAN4:
128 case CTRY_JAPAN5:
129 case CTRY_JAPAN6:
130 case CTRY_JAPAN7:
131 case CTRY_JAPAN8:
132 case CTRY_JAPAN9:
133 case CTRY_JAPAN10:
134 case CTRY_JAPAN11:
135 case CTRY_JAPAN12:
136 case CTRY_JAPAN13:
137 case CTRY_JAPAN14:
138 case CTRY_JAPAN15:
139 case CTRY_JAPAN16:
140 case CTRY_JAPAN17:
141 case CTRY_JAPAN18:
142 case CTRY_JAPAN19:
143 case CTRY_JAPAN20:
144 case CTRY_JAPAN21:
145 case CTRY_JAPAN22:
146 case CTRY_JAPAN23:
147 case CTRY_JAPAN24:
148 case CTRY_JAPAN25:
149 case CTRY_JAPAN26:
150 case CTRY_JAPAN27:
151 case CTRY_JAPAN28:
152 case CTRY_JAPAN29:
153 case CTRY_JAPAN30:
154 case CTRY_JAPAN31:
155 case CTRY_JAPAN32:
156 case CTRY_JAPAN33:
157 case CTRY_JAPAN34:
158 case CTRY_JAPAN35:
159 case CTRY_JAPAN36:
160 case CTRY_JAPAN37:
161 case CTRY_JAPAN38:
162 case CTRY_JAPAN39:
163 case CTRY_JAPAN40:
164 case CTRY_JAPAN41:
165 case CTRY_JAPAN42:
166 case CTRY_JAPAN43:
167 case CTRY_JAPAN44:
168 case CTRY_JAPAN45:
169 case CTRY_JAPAN46:
170 case CTRY_JAPAN47:
171 case CTRY_JAPAN48:
172 case CTRY_JAPAN49:
173 case CTRY_JAPAN50:
174 case CTRY_JAPAN51:
175 case CTRY_JAPAN52:
176 case CTRY_JAPAN53:
177 case CTRY_JAPAN54:
178 case CTRY_JAPAN55:
179 case CTRY_JAPAN56:
180 case CTRY_JAPAN57:
181 case CTRY_JAPAN58:
182 case CTRY_JAPAN59:
183 return false;
184 }
185
186 return true;
187}
188
189static bool ath_reg_dyn_country_user_allow(struct ath_regulatory *reg)
190{
191 if (!IS_ENABLED(CONFIG_ATH_REG_DYNAMIC_USER_REG_HINTS))
192 return false;
193 if (!dynamic_country_user_possible(reg))
194 return false;
195 return true;
196}
197
198static inline bool is_wwr_sku(u16 regd)
199{
200 return ((regd & COUNTRY_ERD_FLAG) != COUNTRY_ERD_FLAG) &&
201 (((regd & WORLD_SKU_MASK) == WORLD_SKU_PREFIX) ||
202 (regd == WORLD));
203}
204
205static u16 ath_regd_get_eepromRD(struct ath_regulatory *reg)
206{
207 return reg->current_rd & ~WORLDWIDE_ROAMING_FLAG;
208}
209
210bool ath_is_world_regd(struct ath_regulatory *reg)
211{
212 return is_wwr_sku(ath_regd_get_eepromRD(reg));
213}
214EXPORT_SYMBOL(ath_is_world_regd);
215
216static const struct ieee80211_regdomain *ath_default_world_regdomain(void)
217{
218 /* this is the most restrictive */
219 return &ath_world_regdom_64;
220}
221
222static const struct
223ieee80211_regdomain *ath_world_regdomain(struct ath_regulatory *reg)
224{
225 switch (reg->regpair->reg_domain) {
226 case 0x60:
227 case 0x61:
228 case 0x62:
229 return &ath_world_regdom_60_61_62;
230 case 0x63:
231 case 0x65:
232 return &ath_world_regdom_63_65;
233 case 0x64:
234 return &ath_world_regdom_64;
235 case 0x66:
236 case 0x69:
237 return &ath_world_regdom_66_69;
238 case 0x67:
239 case 0x68:
240 case 0x6A:
241 case 0x6C:
242 return &ath_world_regdom_67_68_6A_6C;
243 default:
244 WARN_ON(1);
245 return ath_default_world_regdomain();
246 }
247}
248
249bool ath_is_49ghz_allowed(u16 regdomain)
250{
251 /* possibly more */
252 return regdomain == MKK9_MKKC;
253}
254EXPORT_SYMBOL(ath_is_49ghz_allowed);
255
256/* Frequency is one where radar detection is required */
257static bool ath_is_radar_freq(u16 center_freq,
258 struct ath_regulatory *reg)
259
260{
261 if (reg->country_code == CTRY_INDIA)
262 return (center_freq >= 5500 && center_freq <= 5700);
263 return (center_freq >= 5260 && center_freq <= 5700);
264}
265
266static void ath_force_clear_no_ir_chan(struct wiphy *wiphy,
267 struct ieee80211_channel *ch)
268{
269 const struct ieee80211_reg_rule *reg_rule;
270
271 reg_rule = freq_reg_info(wiphy, MHZ_TO_KHZ(ch->center_freq));
272 if (IS_ERR(reg_rule))
273 return;
274
275 if (!(reg_rule->flags & NL80211_RRF_NO_IR))
276 if (ch->flags & IEEE80211_CHAN_NO_IR)
277 ch->flags &= ~IEEE80211_CHAN_NO_IR;
278}
279
280static void ath_force_clear_no_ir_freq(struct wiphy *wiphy, u16 center_freq)
281{
282 struct ieee80211_channel *ch;
283
284 ch = ieee80211_get_channel(wiphy, center_freq);
285 if (!ch)
286 return;
287
288 ath_force_clear_no_ir_chan(wiphy, ch);
289}
290
291static void ath_force_no_ir_chan(struct ieee80211_channel *ch)
292{
293 ch->flags |= IEEE80211_CHAN_NO_IR;
294}
295
296static void ath_force_no_ir_freq(struct wiphy *wiphy, u16 center_freq)
297{
298 struct ieee80211_channel *ch;
299
300 ch = ieee80211_get_channel(wiphy, center_freq);
301 if (!ch)
302 return;
303
304 ath_force_no_ir_chan(ch);
305}
306
307static void
308__ath_reg_apply_beaconing_flags(struct wiphy *wiphy,
309 struct ath_regulatory *reg,
310 enum nl80211_reg_initiator initiator,
311 struct ieee80211_channel *ch)
312{
313 if (ath_is_radar_freq(ch->center_freq, reg) ||
314 (ch->flags & IEEE80211_CHAN_RADAR))
315 return;
316
317 switch (initiator) {
318 case NL80211_REGDOM_SET_BY_COUNTRY_IE:
319 ath_force_clear_no_ir_chan(wiphy, ch);
320 break;
321 case NL80211_REGDOM_SET_BY_USER:
322 if (ath_reg_dyn_country_user_allow(reg))
323 ath_force_clear_no_ir_chan(wiphy, ch);
324 break;
325 default:
326 if (ch->beacon_found)
327 ch->flags &= ~IEEE80211_CHAN_NO_IR;
328 }
329}
330
331/*
332 * These exception rules do not apply radar frequencies.
333 *
334 * - We enable initiating radiation if the country IE says its fine:
335 * - If no country IE has been processed and a we determine we have
336 * received a beacon on a channel we can enable initiating radiation.
337 */
338static void
339ath_reg_apply_beaconing_flags(struct wiphy *wiphy,
340 struct ath_regulatory *reg,
341 enum nl80211_reg_initiator initiator)
342{
343 enum nl80211_band band;
344 struct ieee80211_supported_band *sband;
345 struct ieee80211_channel *ch;
346 unsigned int i;
347
348 for (band = 0; band < NUM_NL80211_BANDS; band++) {
349 if (!wiphy->bands[band])
350 continue;
351 sband = wiphy->bands[band];
352 for (i = 0; i < sband->n_channels; i++) {
353 ch = &sband->channels[i];
354 __ath_reg_apply_beaconing_flags(wiphy, reg,
355 initiator, ch);
356 }
357 }
358}
359
360/**
361 * ath_reg_apply_ir_flags()
362 * @wiphy: the wiphy to use
363 * @reg: regulatory structure - used for country selection
364 * @initiator: the regulatory hint initiator
365 *
366 * If no country IE has been received always enable passive scan
367 * and no-ibss on these channels. This is only done for specific
368 * regulatory SKUs.
369 *
370 * If a country IE has been received check its rule for this
371 * channel first before enabling active scan. The passive scan
372 * would have been enforced by the initial processing of our
373 * custom regulatory domain.
374 */
375static void
376ath_reg_apply_ir_flags(struct wiphy *wiphy,
377 struct ath_regulatory *reg,
378 enum nl80211_reg_initiator initiator)
379{
380 struct ieee80211_supported_band *sband;
381
382 sband = wiphy->bands[NL80211_BAND_2GHZ];
383 if (!sband)
384 return;
385
386 switch(initiator) {
387 case NL80211_REGDOM_SET_BY_COUNTRY_IE:
388 ath_force_clear_no_ir_freq(wiphy, 2467);
389 ath_force_clear_no_ir_freq(wiphy, 2472);
390 break;
391 case NL80211_REGDOM_SET_BY_USER:
392 if (!ath_reg_dyn_country_user_allow(reg))
393 break;
394 ath_force_clear_no_ir_freq(wiphy, 2467);
395 ath_force_clear_no_ir_freq(wiphy, 2472);
396 break;
397 default:
398 ath_force_no_ir_freq(wiphy, 2467);
399 ath_force_no_ir_freq(wiphy, 2472);
400 }
401}
402
403/* Always apply Radar/DFS rules on freq range 5500 MHz - 5700 MHz */
404static void ath_reg_apply_radar_flags(struct wiphy *wiphy,
405 struct ath_regulatory *reg)
406{
407 struct ieee80211_supported_band *sband;
408 struct ieee80211_channel *ch;
409 unsigned int i;
410
411 if (!wiphy->bands[NL80211_BAND_5GHZ])
412 return;
413
414 sband = wiphy->bands[NL80211_BAND_5GHZ];
415
416 for (i = 0; i < sband->n_channels; i++) {
417 ch = &sband->channels[i];
418 if (!ath_is_radar_freq(ch->center_freq, reg))
419 continue;
420 /* We always enable radar detection/DFS on this
421 * frequency range. Additionally we also apply on
422 * this frequency range:
423 * - If STA mode does not yet have DFS supports disable
424 * active scanning
425 * - If adhoc mode does not support DFS yet then
426 * disable adhoc in the frequency.
427 * - If AP mode does not yet support radar detection/DFS
428 * do not allow AP mode
429 */
430 if (!(ch->flags & IEEE80211_CHAN_DISABLED))
431 ch->flags |= IEEE80211_CHAN_RADAR |
432 IEEE80211_CHAN_NO_IR;
433 }
434}
435
436static void ath_reg_apply_world_flags(struct wiphy *wiphy,
437 enum nl80211_reg_initiator initiator,
438 struct ath_regulatory *reg)
439{
440 switch (reg->regpair->reg_domain) {
441 case 0x60:
442 case 0x63:
443 case 0x66:
444 case 0x67:
445 case 0x6C:
446 ath_reg_apply_beaconing_flags(wiphy, reg, initiator);
447 break;
448 case 0x68:
449 ath_reg_apply_beaconing_flags(wiphy, reg, initiator);
450 ath_reg_apply_ir_flags(wiphy, reg, initiator);
451 break;
452 default:
453 if (ath_reg_dyn_country_user_allow(reg))
454 ath_reg_apply_beaconing_flags(wiphy, reg, initiator);
455 }
456}
457
458u16 ath_regd_find_country_by_name(char *alpha2)
459{
460 unsigned int i;
461
462 for (i = 0; i < ARRAY_SIZE(allCountries); i++) {
463 if (!memcmp(allCountries[i].isoName, alpha2, 2))
464 return allCountries[i].countryCode;
465 }
466
467 return -1;
468}
469EXPORT_SYMBOL(ath_regd_find_country_by_name);
470
471static int __ath_reg_dyn_country(struct wiphy *wiphy,
472 struct ath_regulatory *reg,
473 struct regulatory_request *request)
474{
475 u16 country_code;
476
477 if (request->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE &&
478 !ath_is_world_regd(reg))
479 return -EINVAL;
480
481 country_code = ath_regd_find_country_by_name(request->alpha2);
482 if (country_code == (u16) -1)
483 return -EINVAL;
484
485 reg->current_rd = COUNTRY_ERD_FLAG;
486 reg->current_rd |= country_code;
487
488 __ath_regd_init(reg);
489
490 ath_reg_apply_world_flags(wiphy, request->initiator, reg);
491
492 return 0;
493}
494
495static void ath_reg_dyn_country(struct wiphy *wiphy,
496 struct ath_regulatory *reg,
497 struct regulatory_request *request)
498{
499 if (__ath_reg_dyn_country(wiphy, reg, request))
500 return;
501
502 printk(KERN_DEBUG "ath: regdomain 0x%0x "
503 "dynamically updated by %s\n",
504 reg->current_rd,
505 reg_initiator_name(request->initiator));
506}
507
508void ath_reg_notifier_apply(struct wiphy *wiphy,
509 struct regulatory_request *request,
510 struct ath_regulatory *reg)
511{
512 struct ath_common *common = container_of(reg, struct ath_common,
513 regulatory);
514 /* We always apply this */
515 ath_reg_apply_radar_flags(wiphy, reg);
516
517 /*
518 * This would happen when we have sent a custom regulatory request
519 * a world regulatory domain and the scheduler hasn't yet processed
520 * any pending requests in the queue.
521 */
522 if (!request)
523 return;
524
525 reg->region = request->dfs_region;
526 switch (request->initiator) {
527 case NL80211_REGDOM_SET_BY_CORE:
528 /*
529 * If common->reg_world_copy is world roaming it means we *were*
530 * world roaming... so we now have to restore that data.
531 */
532 if (!ath_is_world_regd(&common->reg_world_copy))
533 break;
534
535 memcpy(reg, &common->reg_world_copy,
536 sizeof(struct ath_regulatory));
537 break;
538 case NL80211_REGDOM_SET_BY_DRIVER:
539 break;
540 case NL80211_REGDOM_SET_BY_USER:
541 if (ath_reg_dyn_country_user_allow(reg))
542 ath_reg_dyn_country(wiphy, reg, request);
543 break;
544 case NL80211_REGDOM_SET_BY_COUNTRY_IE:
545 ath_reg_dyn_country(wiphy, reg, request);
546 break;
547 }
548}
549EXPORT_SYMBOL(ath_reg_notifier_apply);
550
551static bool ath_regd_is_eeprom_valid(struct ath_regulatory *reg)
552{
553 u16 rd = ath_regd_get_eepromRD(reg);
554 int i;
555
556 if (rd & COUNTRY_ERD_FLAG) {
557 /* EEPROM value is a country code */
558 u16 cc = rd & ~COUNTRY_ERD_FLAG;
559 printk(KERN_DEBUG
560 "ath: EEPROM indicates we should expect "
561 "a country code\n");
562 for (i = 0; i < ARRAY_SIZE(allCountries); i++)
563 if (allCountries[i].countryCode == cc)
564 return true;
565 } else {
566 /* EEPROM value is a regpair value */
567 if (rd != CTRY_DEFAULT)
568 printk(KERN_DEBUG "ath: EEPROM indicates we "
569 "should expect a direct regpair map\n");
570 for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++)
571 if (regDomainPairs[i].reg_domain == rd)
572 return true;
573 }
574 printk(KERN_DEBUG
575 "ath: invalid regulatory domain/country code 0x%x\n", rd);
576 return false;
577}
578
579/* EEPROM country code to regpair mapping */
580static struct country_code_to_enum_rd*
581ath_regd_find_country(u16 countryCode)
582{
583 int i;
584
585 for (i = 0; i < ARRAY_SIZE(allCountries); i++) {
586 if (allCountries[i].countryCode == countryCode)
587 return &allCountries[i];
588 }
589 return NULL;
590}
591
592/* EEPROM rd code to regpair mapping */
593static struct country_code_to_enum_rd*
594ath_regd_find_country_by_rd(int regdmn)
595{
596 int i;
597
598 for (i = 0; i < ARRAY_SIZE(allCountries); i++) {
599 if (allCountries[i].regDmnEnum == regdmn)
600 return &allCountries[i];
601 }
602 return NULL;
603}
604
605/* Returns the map of the EEPROM set RD to a country code */
606static u16 ath_regd_get_default_country(u16 rd)
607{
608 if (rd & COUNTRY_ERD_FLAG) {
609 struct country_code_to_enum_rd *country = NULL;
610 u16 cc = rd & ~COUNTRY_ERD_FLAG;
611
612 country = ath_regd_find_country(cc);
613 if (country != NULL)
614 return cc;
615 }
616
617 return CTRY_DEFAULT;
618}
619
620static struct reg_dmn_pair_mapping*
621ath_get_regpair(int regdmn)
622{
623 int i;
624
625 if (regdmn == NO_ENUMRD)
626 return NULL;
627 for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) {
628 if (regDomainPairs[i].reg_domain == regdmn)
629 return ®DomainPairs[i];
630 }
631 return NULL;
632}
633
634static int
635ath_regd_init_wiphy(struct ath_regulatory *reg,
636 struct wiphy *wiphy,
637 void (*reg_notifier)(struct wiphy *wiphy,
638 struct regulatory_request *request))
639{
640 const struct ieee80211_regdomain *regd;
641
642 wiphy->reg_notifier = reg_notifier;
643 wiphy->regulatory_flags |= REGULATORY_STRICT_REG |
644 REGULATORY_CUSTOM_REG;
645
646 if (ath_is_world_regd(reg)) {
647 /*
648 * Anything applied here (prior to wiphy registration) gets
649 * saved on the wiphy orig_* parameters
650 */
651 regd = ath_world_regdomain(reg);
652 wiphy->regulatory_flags |= REGULATORY_COUNTRY_IE_FOLLOW_POWER;
653 } else {
654 /*
655 * This gets applied in the case of the absence of CRDA,
656 * it's our own custom world regulatory domain, similar to
657 * cfg80211's but we enable passive scanning.
658 */
659 regd = ath_default_world_regdomain();
660 }
661
662 wiphy_apply_custom_regulatory(wiphy, regd);
663 ath_reg_apply_radar_flags(wiphy, reg);
664 ath_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER, reg);
665 return 0;
666}
667
668/*
669 * Some users have reported their EEPROM programmed with
670 * 0x8000 or 0x0 set, this is not a supported regulatory
671 * domain but since we have more than one user with it we
672 * need a solution for them. We default to 0x64, which is
673 * the default Atheros world regulatory domain.
674 */
675static void ath_regd_sanitize(struct ath_regulatory *reg)
676{
677 if (reg->current_rd != COUNTRY_ERD_FLAG && reg->current_rd != 0)
678 return;
679 printk(KERN_DEBUG "ath: EEPROM regdomain sanitized\n");
680 reg->current_rd = 0x64;
681}
682
683static int __ath_regd_init(struct ath_regulatory *reg)
684{
685 struct country_code_to_enum_rd *country = NULL;
686 u16 regdmn;
687
688 if (!reg)
689 return -EINVAL;
690
691 ath_regd_sanitize(reg);
692
693 printk(KERN_DEBUG "ath: EEPROM regdomain: 0x%0x\n", reg->current_rd);
694
695 if (!ath_regd_is_eeprom_valid(reg)) {
696 pr_err("Invalid EEPROM contents\n");
697 return -EINVAL;
698 }
699
700 regdmn = ath_regd_get_eepromRD(reg);
701 reg->country_code = ath_regd_get_default_country(regdmn);
702
703 if (reg->country_code == CTRY_DEFAULT &&
704 regdmn == CTRY_DEFAULT) {
705 printk(KERN_DEBUG "ath: EEPROM indicates default "
706 "country code should be used\n");
707 reg->country_code = CTRY_UNITED_STATES;
708 }
709
710 if (reg->country_code == CTRY_DEFAULT) {
711 country = NULL;
712 } else {
713 printk(KERN_DEBUG "ath: doing EEPROM country->regdmn "
714 "map search\n");
715 country = ath_regd_find_country(reg->country_code);
716 if (country == NULL) {
717 printk(KERN_DEBUG
718 "ath: no valid country maps found for "
719 "country code: 0x%0x\n",
720 reg->country_code);
721 return -EINVAL;
722 } else {
723 regdmn = country->regDmnEnum;
724 printk(KERN_DEBUG "ath: country maps to "
725 "regdmn code: 0x%0x\n",
726 regdmn);
727 }
728 }
729
730 reg->regpair = ath_get_regpair(regdmn);
731
732 if (!reg->regpair) {
733 printk(KERN_DEBUG "ath: "
734 "No regulatory domain pair found, cannot continue\n");
735 return -EINVAL;
736 }
737
738 if (!country)
739 country = ath_regd_find_country_by_rd(regdmn);
740
741 if (country) {
742 reg->alpha2[0] = country->isoName[0];
743 reg->alpha2[1] = country->isoName[1];
744 } else {
745 reg->alpha2[0] = '0';
746 reg->alpha2[1] = '0';
747 }
748
749 printk(KERN_DEBUG "ath: Country alpha2 being used: %c%c\n",
750 reg->alpha2[0], reg->alpha2[1]);
751 printk(KERN_DEBUG "ath: Regpair used: 0x%0x\n",
752 reg->regpair->reg_domain);
753
754 return 0;
755}
756
757int
758ath_regd_init(struct ath_regulatory *reg,
759 struct wiphy *wiphy,
760 void (*reg_notifier)(struct wiphy *wiphy,
761 struct regulatory_request *request))
762{
763 struct ath_common *common = container_of(reg, struct ath_common,
764 regulatory);
765 int r;
766
767 r = __ath_regd_init(reg);
768 if (r)
769 return r;
770
771 if (ath_is_world_regd(reg))
772 memcpy(&common->reg_world_copy, reg,
773 sizeof(struct ath_regulatory));
774
775 ath_regd_init_wiphy(reg, wiphy, reg_notifier);
776
777 return 0;
778}
779EXPORT_SYMBOL(ath_regd_init);
780
781u32 ath_regd_get_band_ctl(struct ath_regulatory *reg,
782 enum nl80211_band band)
783{
784 if (!reg->regpair ||
785 (reg->country_code == CTRY_DEFAULT &&
786 is_wwr_sku(ath_regd_get_eepromRD(reg)))) {
787 return SD_NO_CTL;
788 }
789
790 if (ath_regd_get_eepromRD(reg) == CTRY_DEFAULT) {
791 switch (reg->region) {
792 case NL80211_DFS_FCC:
793 return CTL_FCC;
794 case NL80211_DFS_ETSI:
795 return CTL_ETSI;
796 case NL80211_DFS_JP:
797 return CTL_MKK;
798 default:
799 break;
800 }
801 }
802
803 switch (band) {
804 case NL80211_BAND_2GHZ:
805 return reg->regpair->reg_2ghz_ctl;
806 case NL80211_BAND_5GHZ:
807 return reg->regpair->reg_5ghz_ctl;
808 default:
809 return NO_CTL;
810 }
811}
812EXPORT_SYMBOL(ath_regd_get_band_ctl);