Commit | Line | Data |
---|---|---|
f078f209 | 1 | /* |
cee075a2 | 2 | * Copyright (c) 2008-2009 Atheros Communications Inc. |
f078f209 LR |
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 | ||
516304b0 JP |
17 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
18 | ||
f078f209 | 19 | #include <linux/kernel.h> |
ee40fa06 | 20 | #include <linux/export.h> |
3a702e49 BC |
21 | #include <net/cfg80211.h> |
22 | #include <net/mac80211.h> | |
3a702e49 | 23 | #include "regd.h" |
f078f209 LR |
24 | #include "regd_common.h" |
25 | ||
de1c732b LR |
26 | static int __ath_regd_init(struct ath_regulatory *reg); |
27 | ||
5f8e077c LR |
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 | */ | |
f078f209 | 34 | |
5f8e077c LR |
35 | /* Only these channels all allow active scan on all world regulatory domains */ |
36 | #define ATH9K_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 ATH9K_2GHZ_CH12_13 REG_RULE(2467-10, 2472+10, 40, 0, 20,\ | |
40 | NL80211_RRF_PASSIVE_SCAN) | |
41 | #define ATH9K_2GHZ_CH14 REG_RULE(2484-10, 2484+10, 40, 0, 20,\ | |
42 | NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_OFDM) | |
43 | ||
44 | /* We allow IBSS on these on a case by case basis by regulatory domain */ | |
d619c62f | 45 | #define ATH9K_5GHZ_5150_5350 REG_RULE(5150-10, 5350+10, 80, 0, 30,\ |
5f8e077c | 46 | NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS) |
d619c62f | 47 | #define ATH9K_5GHZ_5470_5850 REG_RULE(5470-10, 5850+10, 80, 0, 30,\ |
5f8e077c | 48 | NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS) |
d619c62f | 49 | #define ATH9K_5GHZ_5725_5850 REG_RULE(5725-10, 5850+10, 80, 0, 30,\ |
5f8e077c LR |
50 | NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS) |
51 | ||
52 | #define ATH9K_2GHZ_ALL ATH9K_2GHZ_CH01_11, \ | |
53 | ATH9K_2GHZ_CH12_13, \ | |
54 | ATH9K_2GHZ_CH14 | |
55 | ||
56 | #define ATH9K_5GHZ_ALL ATH9K_5GHZ_5150_5350, \ | |
57 | ATH9K_5GHZ_5470_5850 | |
cfcfe446 | 58 | |
5f8e077c LR |
59 | /* This one skips what we call "mid band" */ |
60 | #define ATH9K_5GHZ_NO_MIDBAND ATH9K_5GHZ_5150_5350, \ | |
61 | ATH9K_5GHZ_5725_5850 | |
62 | ||
63 | /* Can be used for: | |
64 | * 0x60, 0x61, 0x62 */ | |
3a702e49 | 65 | static const struct ieee80211_regdomain ath_world_regdom_60_61_62 = { |
5f8e077c LR |
66 | .n_reg_rules = 5, |
67 | .alpha2 = "99", | |
68 | .reg_rules = { | |
69 | ATH9K_2GHZ_ALL, | |
70 | ATH9K_5GHZ_ALL, | |
71 | } | |
72 | }; | |
73 | ||
74 | /* Can be used by 0x63 and 0x65 */ | |
3a702e49 | 75 | static const struct ieee80211_regdomain ath_world_regdom_63_65 = { |
5f8e077c LR |
76 | .n_reg_rules = 4, |
77 | .alpha2 = "99", | |
78 | .reg_rules = { | |
79 | ATH9K_2GHZ_CH01_11, | |
80 | ATH9K_2GHZ_CH12_13, | |
81 | ATH9K_5GHZ_NO_MIDBAND, | |
82 | } | |
83 | }; | |
84 | ||
85 | /* Can be used by 0x64 only */ | |
3a702e49 | 86 | static const struct ieee80211_regdomain ath_world_regdom_64 = { |
5f8e077c LR |
87 | .n_reg_rules = 3, |
88 | .alpha2 = "99", | |
89 | .reg_rules = { | |
90 | ATH9K_2GHZ_CH01_11, | |
91 | ATH9K_5GHZ_NO_MIDBAND, | |
92 | } | |
93 | }; | |
94 | ||
95 | /* Can be used by 0x66 and 0x69 */ | |
3a702e49 | 96 | static const struct ieee80211_regdomain ath_world_regdom_66_69 = { |
5f8e077c LR |
97 | .n_reg_rules = 3, |
98 | .alpha2 = "99", | |
99 | .reg_rules = { | |
100 | ATH9K_2GHZ_CH01_11, | |
101 | ATH9K_5GHZ_ALL, | |
102 | } | |
103 | }; | |
104 | ||
34a0a202 SB |
105 | /* Can be used by 0x67, 0x68, 0x6A and 0x6C */ |
106 | static const struct ieee80211_regdomain ath_world_regdom_67_68_6A_6C = { | |
5f8e077c LR |
107 | .n_reg_rules = 4, |
108 | .alpha2 = "99", | |
109 | .reg_rules = { | |
110 | ATH9K_2GHZ_CH01_11, | |
111 | ATH9K_2GHZ_CH12_13, | |
112 | ATH9K_5GHZ_ALL, | |
113 | } | |
114 | }; | |
f078f209 | 115 | |
d0f48f9d BC |
116 | static inline bool is_wwr_sku(u16 regd) |
117 | { | |
641eabb0 CL |
118 | return ((regd & COUNTRY_ERD_FLAG) != COUNTRY_ERD_FLAG) && |
119 | (((regd & WORLD_SKU_MASK) == WORLD_SKU_PREFIX) || | |
120 | (regd == WORLD)); | |
d0f48f9d BC |
121 | } |
122 | ||
3a702e49 | 123 | static u16 ath_regd_get_eepromRD(struct ath_regulatory *reg) |
f078f209 | 124 | { |
c02cf373 | 125 | return reg->current_rd & ~WORLDWIDE_ROAMING_FLAG; |
f078f209 LR |
126 | } |
127 | ||
3a702e49 | 128 | bool ath_is_world_regd(struct ath_regulatory *reg) |
5f8e077c | 129 | { |
3a702e49 | 130 | return is_wwr_sku(ath_regd_get_eepromRD(reg)); |
f078f209 | 131 | } |
3a702e49 | 132 | EXPORT_SYMBOL(ath_is_world_regd); |
f078f209 | 133 | |
e3bb249b | 134 | static const struct ieee80211_regdomain *ath_default_world_regdomain(void) |
f078f209 | 135 | { |
5f8e077c | 136 | /* this is the most restrictive */ |
3a702e49 | 137 | return &ath_world_regdom_64; |
5f8e077c | 138 | } |
f078f209 | 139 | |
e3bb249b | 140 | static const struct |
3a702e49 | 141 | ieee80211_regdomain *ath_world_regdomain(struct ath_regulatory *reg) |
5f8e077c | 142 | { |
c02cf373 | 143 | switch (reg->regpair->regDmnEnum) { |
5f8e077c LR |
144 | case 0x60: |
145 | case 0x61: | |
146 | case 0x62: | |
3a702e49 | 147 | return &ath_world_regdom_60_61_62; |
5f8e077c LR |
148 | case 0x63: |
149 | case 0x65: | |
3a702e49 | 150 | return &ath_world_regdom_63_65; |
5f8e077c | 151 | case 0x64: |
3a702e49 | 152 | return &ath_world_regdom_64; |
5f8e077c LR |
153 | case 0x66: |
154 | case 0x69: | |
3a702e49 | 155 | return &ath_world_regdom_66_69; |
5f8e077c LR |
156 | case 0x67: |
157 | case 0x68: | |
158 | case 0x6A: | |
34a0a202 SB |
159 | case 0x6C: |
160 | return &ath_world_regdom_67_68_6A_6C; | |
5f8e077c LR |
161 | default: |
162 | WARN_ON(1); | |
3a702e49 | 163 | return ath_default_world_regdomain(); |
f078f209 | 164 | } |
f078f209 LR |
165 | } |
166 | ||
5719efdd BR |
167 | bool ath_is_49ghz_allowed(u16 regdomain) |
168 | { | |
169 | /* possibly more */ | |
170 | return regdomain == MKK9_MKKC; | |
171 | } | |
172 | EXPORT_SYMBOL(ath_is_49ghz_allowed); | |
173 | ||
547e4c2e | 174 | /* Frequency is one where radar detection is required */ |
3a702e49 | 175 | static bool ath_is_radar_freq(u16 center_freq) |
547e4c2e LR |
176 | { |
177 | return (center_freq >= 5260 && center_freq <= 5700); | |
178 | } | |
179 | ||
7519a8f0 | 180 | /* |
84540869 LR |
181 | * N.B: These exception rules do not apply radar freqs. |
182 | * | |
183 | * - We enable adhoc (or beaconing) if allowed by 11d | |
184 | * - We enable active scan if the channel is allowed by 11d | |
185 | * - If no country IE has been processed and a we determine we have | |
186 | * received a beacon on a channel we can enable active scan and | |
187 | * adhoc (or beaconing). | |
7519a8f0 | 188 | */ |
6b2b2ffb LR |
189 | static void |
190 | ath_reg_apply_beaconing_flags(struct wiphy *wiphy, | |
191 | enum nl80211_reg_initiator initiator) | |
f078f209 | 192 | { |
84540869 | 193 | enum ieee80211_band band; |
5f8e077c LR |
194 | struct ieee80211_supported_band *sband; |
195 | const struct ieee80211_reg_rule *reg_rule; | |
196 | struct ieee80211_channel *ch; | |
197 | unsigned int i; | |
5f8e077c | 198 | |
84540869 | 199 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
f078f209 | 200 | |
84540869 | 201 | if (!wiphy->bands[band]) |
5f8e077c | 202 | continue; |
84540869 LR |
203 | |
204 | sband = wiphy->bands[band]; | |
205 | ||
206 | for (i = 0; i < sband->n_channels; i++) { | |
207 | ||
208 | ch = &sband->channels[i]; | |
209 | ||
3a702e49 | 210 | if (ath_is_radar_freq(ch->center_freq) || |
84540869 LR |
211 | (ch->flags & IEEE80211_CHAN_RADAR)) |
212 | continue; | |
213 | ||
7db90f4a | 214 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) { |
361c9c8b JB |
215 | reg_rule = freq_reg_info(wiphy, ch->center_freq); |
216 | if (IS_ERR(reg_rule)) | |
84540869 LR |
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 | } | |
5f8e077c | 240 | } |
84540869 | 241 | |
f078f209 LR |
242 | } |
243 | ||
5f8e077c | 244 | /* Allows active scan scan on Ch 12 and 13 */ |
6b2b2ffb LR |
245 | static void |
246 | ath_reg_apply_active_scan_flags(struct wiphy *wiphy, | |
247 | enum nl80211_reg_initiator initiator) | |
f078f209 | 248 | { |
5f8e077c LR |
249 | struct ieee80211_supported_band *sband; |
250 | struct ieee80211_channel *ch; | |
251 | const struct ieee80211_reg_rule *reg_rule; | |
5f8e077c | 252 | |
5f8e077c | 253 | sband = wiphy->bands[IEEE80211_BAND_2GHZ]; |
a59be081 HS |
254 | if (!sband) |
255 | return; | |
5f8e077c | 256 | |
84540869 LR |
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 | */ | |
7db90f4a | 261 | if (initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) { |
5f8e077c LR |
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 | } | |
f078f209 | 270 | |
84540869 | 271 | /* |
25985edc | 272 | * If a country IE has been received check its rule for this |
5f8e077c | 273 | * channel first before enabling active scan. The passive scan |
84540869 LR |
274 | * would have been enforced by the initial processing of our |
275 | * custom regulatory domain. | |
276 | */ | |
f078f209 | 277 | |
5f8e077c | 278 | ch = &sband->channels[11]; /* CH 12 */ |
361c9c8b JB |
279 | reg_rule = freq_reg_info(wiphy, ch->center_freq); |
280 | if (!IS_ERR(reg_rule)) { | |
5f8e077c LR |
281 | if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN)) |
282 | if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
283 | ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; | |
f078f209 LR |
284 | } |
285 | ||
5f8e077c | 286 | ch = &sband->channels[12]; /* CH 13 */ |
361c9c8b JB |
287 | reg_rule = freq_reg_info(wiphy, ch->center_freq); |
288 | if (!IS_ERR(reg_rule)) { | |
5f8e077c LR |
289 | if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN)) |
290 | if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
291 | ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; | |
f078f209 | 292 | } |
f078f209 LR |
293 | } |
294 | ||
5f8e077c | 295 | /* Always apply Radar/DFS rules on freq range 5260 MHz - 5700 MHz */ |
e3bb249b | 296 | static void ath_reg_apply_radar_flags(struct wiphy *wiphy) |
f078f209 | 297 | { |
5f8e077c LR |
298 | struct ieee80211_supported_band *sband; |
299 | struct ieee80211_channel *ch; | |
300 | unsigned int i; | |
f078f209 | 301 | |
5f8e077c LR |
302 | if (!wiphy->bands[IEEE80211_BAND_5GHZ]) |
303 | return; | |
f078f209 | 304 | |
5f8e077c | 305 | sband = wiphy->bands[IEEE80211_BAND_5GHZ]; |
f078f209 | 306 | |
5f8e077c LR |
307 | for (i = 0; i < sband->n_channels; i++) { |
308 | ch = &sband->channels[i]; | |
3a702e49 | 309 | if (!ath_is_radar_freq(ch->center_freq)) |
5f8e077c LR |
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 | } | |
f078f209 | 327 | |
e3bb249b | 328 | static void ath_reg_apply_world_flags(struct wiphy *wiphy, |
6b2b2ffb LR |
329 | enum nl80211_reg_initiator initiator, |
330 | struct ath_regulatory *reg) | |
5f8e077c | 331 | { |
c02cf373 | 332 | switch (reg->regpair->regDmnEnum) { |
5f8e077c LR |
333 | case 0x60: |
334 | case 0x63: | |
335 | case 0x66: | |
336 | case 0x67: | |
2290a9c3 | 337 | case 0x6C: |
3a702e49 | 338 | ath_reg_apply_beaconing_flags(wiphy, initiator); |
5f8e077c LR |
339 | break; |
340 | case 0x68: | |
3a702e49 BC |
341 | ath_reg_apply_beaconing_flags(wiphy, initiator); |
342 | ath_reg_apply_active_scan_flags(wiphy, initiator); | |
5f8e077c LR |
343 | break; |
344 | } | |
5f8e077c | 345 | } |
f078f209 | 346 | |
de1c732b LR |
347 | static u16 ath_regd_find_country_by_name(char *alpha2) |
348 | { | |
349 | unsigned int i; | |
350 | ||
351 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) { | |
352 | if (!memcmp(allCountries[i].isoName, alpha2, 2)) | |
353 | return allCountries[i].countryCode; | |
354 | } | |
355 | ||
356 | return -1; | |
357 | } | |
358 | ||
0c0280bd LR |
359 | void ath_reg_notifier_apply(struct wiphy *wiphy, |
360 | struct regulatory_request *request, | |
361 | struct ath_regulatory *reg) | |
5f8e077c | 362 | { |
de1c732b LR |
363 | struct ath_common *common = container_of(reg, struct ath_common, |
364 | regulatory); | |
365 | u16 country_code; | |
366 | ||
5f8e077c | 367 | /* We always apply this */ |
3a702e49 | 368 | ath_reg_apply_radar_flags(wiphy); |
f078f209 | 369 | |
931299cf LR |
370 | /* |
371 | * This would happen when we have sent a custom regulatory request | |
372 | * a world regulatory domain and the scheduler hasn't yet processed | |
373 | * any pending requests in the queue. | |
374 | */ | |
375 | if (!request) | |
0c0280bd | 376 | return; |
931299cf | 377 | |
5f8e077c | 378 | switch (request->initiator) { |
7db90f4a | 379 | case NL80211_REGDOM_SET_BY_CORE: |
de1c732b LR |
380 | /* |
381 | * If common->reg_world_copy is world roaming it means we *were* | |
382 | * world roaming... so we now have to restore that data. | |
383 | */ | |
384 | if (!ath_is_world_regd(&common->reg_world_copy)) | |
385 | break; | |
386 | ||
387 | memcpy(reg, &common->reg_world_copy, | |
388 | sizeof(struct ath_regulatory)); | |
389 | break; | |
390 | case NL80211_REGDOM_SET_BY_DRIVER: | |
7db90f4a | 391 | case NL80211_REGDOM_SET_BY_USER: |
5f8e077c | 392 | break; |
7db90f4a | 393 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
de1c732b LR |
394 | if (!ath_is_world_regd(reg)) |
395 | break; | |
396 | ||
397 | country_code = ath_regd_find_country_by_name(request->alpha2); | |
398 | if (country_code == (u16) -1) | |
399 | break; | |
400 | ||
401 | reg->current_rd = COUNTRY_ERD_FLAG; | |
402 | reg->current_rd |= country_code; | |
403 | ||
404 | printk(KERN_DEBUG "ath: regdomain 0x%0x updated by CountryIE\n", | |
405 | reg->current_rd); | |
406 | __ath_regd_init(reg); | |
407 | ||
408 | ath_reg_apply_world_flags(wiphy, request->initiator, reg); | |
409 | ||
5f8e077c LR |
410 | break; |
411 | } | |
f078f209 | 412 | } |
3a702e49 | 413 | EXPORT_SYMBOL(ath_reg_notifier_apply); |
f078f209 | 414 | |
e3bb249b | 415 | static bool ath_regd_is_eeprom_valid(struct ath_regulatory *reg) |
c02cf373 | 416 | { |
cfcfe446 | 417 | u16 rd = ath_regd_get_eepromRD(reg); |
5f8e077c | 418 | int i; |
f078f209 | 419 | |
5f8e077c LR |
420 | if (rd & COUNTRY_ERD_FLAG) { |
421 | /* EEPROM value is a country code */ | |
422 | u16 cc = rd & ~COUNTRY_ERD_FLAG; | |
e03e5ffd LR |
423 | printk(KERN_DEBUG |
424 | "ath: EEPROM indicates we should expect " | |
425 | "a country code\n"); | |
5f8e077c LR |
426 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) |
427 | if (allCountries[i].countryCode == cc) | |
428 | return true; | |
429 | } else { | |
430 | /* EEPROM value is a regpair value */ | |
e03e5ffd LR |
431 | if (rd != CTRY_DEFAULT) |
432 | printk(KERN_DEBUG "ath: EEPROM indicates we " | |
433 | "should expect a direct regpair map\n"); | |
5f8e077c LR |
434 | for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) |
435 | if (regDomainPairs[i].regDmnEnum == rd) | |
436 | return true; | |
f078f209 | 437 | } |
c02cf373 | 438 | printk(KERN_DEBUG |
3a702e49 | 439 | "ath: invalid regulatory domain/country code 0x%x\n", rd); |
f078f209 LR |
440 | return false; |
441 | } | |
442 | ||
5f8e077c | 443 | /* EEPROM country code to regpair mapping */ |
f078f209 | 444 | static struct country_code_to_enum_rd* |
3a702e49 | 445 | ath_regd_find_country(u16 countryCode) |
f078f209 LR |
446 | { |
447 | int i; | |
448 | ||
449 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) { | |
450 | if (allCountries[i].countryCode == countryCode) | |
451 | return &allCountries[i]; | |
452 | } | |
453 | return NULL; | |
454 | } | |
455 | ||
5f8e077c LR |
456 | /* EEPROM rd code to regpair mapping */ |
457 | static struct country_code_to_enum_rd* | |
3a702e49 | 458 | ath_regd_find_country_by_rd(int regdmn) |
5f8e077c LR |
459 | { |
460 | int i; | |
461 | ||
462 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) { | |
463 | if (allCountries[i].regDmnEnum == regdmn) | |
464 | return &allCountries[i]; | |
465 | } | |
466 | return NULL; | |
467 | } | |
468 | ||
469 | /* Returns the map of the EEPROM set RD to a country code */ | |
3a702e49 | 470 | static u16 ath_regd_get_default_country(u16 rd) |
f078f209 | 471 | { |
f078f209 LR |
472 | if (rd & COUNTRY_ERD_FLAG) { |
473 | struct country_code_to_enum_rd *country = NULL; | |
474 | u16 cc = rd & ~COUNTRY_ERD_FLAG; | |
475 | ||
3a702e49 | 476 | country = ath_regd_find_country(cc); |
f078f209 LR |
477 | if (country != NULL) |
478 | return cc; | |
479 | } | |
480 | ||
f078f209 LR |
481 | return CTRY_DEFAULT; |
482 | } | |
483 | ||
5f8e077c | 484 | static struct reg_dmn_pair_mapping* |
3a702e49 | 485 | ath_get_regpair(int regdmn) |
f078f209 LR |
486 | { |
487 | int i; | |
488 | ||
5f8e077c LR |
489 | if (regdmn == NO_ENUMRD) |
490 | return NULL; | |
f078f209 | 491 | for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) { |
5f8e077c LR |
492 | if (regDomainPairs[i].regDmnEnum == regdmn) |
493 | return ®DomainPairs[i]; | |
f078f209 | 494 | } |
5f8e077c | 495 | return NULL; |
f078f209 LR |
496 | } |
497 | ||
6b2b2ffb LR |
498 | static int |
499 | ath_regd_init_wiphy(struct ath_regulatory *reg, | |
500 | struct wiphy *wiphy, | |
0c0280bd LR |
501 | void (*reg_notifier)(struct wiphy *wiphy, |
502 | struct regulatory_request *request)) | |
e3bb249b BC |
503 | { |
504 | const struct ieee80211_regdomain *regd; | |
505 | ||
506 | wiphy->reg_notifier = reg_notifier; | |
5be83de5 | 507 | wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY; |
e3bb249b BC |
508 | |
509 | if (ath_is_world_regd(reg)) { | |
510 | /* | |
511 | * Anything applied here (prior to wiphy registration) gets | |
512 | * saved on the wiphy orig_* parameters | |
513 | */ | |
514 | regd = ath_world_regdomain(reg); | |
5be83de5 | 515 | wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY; |
e3bb249b BC |
516 | } else { |
517 | /* | |
25985edc | 518 | * This gets applied in the case of the absence of CRDA, |
e3bb249b BC |
519 | * it's our own custom world regulatory domain, similar to |
520 | * cfg80211's but we enable passive scanning. | |
521 | */ | |
522 | regd = ath_default_world_regdomain(); | |
523 | } | |
524 | wiphy_apply_custom_regulatory(wiphy, regd); | |
525 | ath_reg_apply_radar_flags(wiphy); | |
526 | ath_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER, reg); | |
527 | return 0; | |
528 | } | |
529 | ||
5d2214ac LR |
530 | /* |
531 | * Some users have reported their EEPROM programmed with | |
532 | * 0x8000 set, this is not a supported regulatory domain | |
533 | * but since we have more than one user with it we need | |
534 | * a solution for them. We default to 0x64, which is the | |
535 | * default Atheros world regulatory domain. | |
536 | */ | |
537 | static void ath_regd_sanitize(struct ath_regulatory *reg) | |
538 | { | |
539 | if (reg->current_rd != COUNTRY_ERD_FLAG) | |
540 | return; | |
541 | printk(KERN_DEBUG "ath: EEPROM regdomain sanitized\n"); | |
542 | reg->current_rd = 0x64; | |
543 | } | |
544 | ||
43fcb430 | 545 | static int __ath_regd_init(struct ath_regulatory *reg) |
f078f209 | 546 | { |
f078f209 | 547 | struct country_code_to_enum_rd *country = NULL; |
e775aaf0 | 548 | u16 regdmn; |
f078f209 | 549 | |
e03e5ffd LR |
550 | if (!reg) |
551 | return -EINVAL; | |
552 | ||
5d2214ac LR |
553 | ath_regd_sanitize(reg); |
554 | ||
e03e5ffd LR |
555 | printk(KERN_DEBUG "ath: EEPROM regdomain: 0x%0x\n", reg->current_rd); |
556 | ||
3a702e49 | 557 | if (!ath_regd_is_eeprom_valid(reg)) { |
516304b0 | 558 | pr_err("Invalid EEPROM contents\n"); |
5f8e077c | 559 | return -EINVAL; |
f078f209 LR |
560 | } |
561 | ||
3a702e49 BC |
562 | regdmn = ath_regd_get_eepromRD(reg); |
563 | reg->country_code = ath_regd_get_default_country(regdmn); | |
f078f209 | 564 | |
c02cf373 | 565 | if (reg->country_code == CTRY_DEFAULT && |
e03e5ffd LR |
566 | regdmn == CTRY_DEFAULT) { |
567 | printk(KERN_DEBUG "ath: EEPROM indicates default " | |
568 | "country code should be used\n"); | |
c02cf373 | 569 | reg->country_code = CTRY_UNITED_STATES; |
e03e5ffd | 570 | } |
f078f209 | 571 | |
c02cf373 | 572 | if (reg->country_code == CTRY_DEFAULT) { |
f078f209 LR |
573 | country = NULL; |
574 | } else { | |
e03e5ffd LR |
575 | printk(KERN_DEBUG "ath: doing EEPROM country->regdmn " |
576 | "map search\n"); | |
3a702e49 | 577 | country = ath_regd_find_country(reg->country_code); |
f078f209 | 578 | if (country == NULL) { |
c02cf373 | 579 | printk(KERN_DEBUG |
e03e5ffd LR |
580 | "ath: no valid country maps found for " |
581 | "country code: 0x%0x\n", | |
c02cf373 | 582 | reg->country_code); |
5f8e077c | 583 | return -EINVAL; |
e03e5ffd | 584 | } else { |
f078f209 | 585 | regdmn = country->regDmnEnum; |
e03e5ffd LR |
586 | printk(KERN_DEBUG "ath: country maps to " |
587 | "regdmn code: 0x%0x\n", | |
588 | regdmn); | |
589 | } | |
f078f209 LR |
590 | } |
591 | ||
3a702e49 | 592 | reg->regpair = ath_get_regpair(regdmn); |
f078f209 | 593 | |
c02cf373 | 594 | if (!reg->regpair) { |
3a702e49 | 595 | printk(KERN_DEBUG "ath: " |
5f8e077c LR |
596 | "No regulatory domain pair found, cannot continue\n"); |
597 | return -EINVAL; | |
f078f209 | 598 | } |
f078f209 | 599 | |
5f8e077c | 600 | if (!country) |
3a702e49 | 601 | country = ath_regd_find_country_by_rd(regdmn); |
f078f209 | 602 | |
5f8e077c | 603 | if (country) { |
c02cf373 BC |
604 | reg->alpha2[0] = country->isoName[0]; |
605 | reg->alpha2[1] = country->isoName[1]; | |
f078f209 | 606 | } else { |
c02cf373 BC |
607 | reg->alpha2[0] = '0'; |
608 | reg->alpha2[1] = '0'; | |
f078f209 LR |
609 | } |
610 | ||
3a702e49 | 611 | printk(KERN_DEBUG "ath: Country alpha2 being used: %c%c\n", |
c02cf373 | 612 | reg->alpha2[0], reg->alpha2[1]); |
e03e5ffd | 613 | printk(KERN_DEBUG "ath: Regpair used: 0x%0x\n", |
c02cf373 | 614 | reg->regpair->regDmnEnum); |
f078f209 | 615 | |
43fcb430 LR |
616 | return 0; |
617 | } | |
618 | ||
619 | int | |
620 | ath_regd_init(struct ath_regulatory *reg, | |
621 | struct wiphy *wiphy, | |
0c0280bd LR |
622 | void (*reg_notifier)(struct wiphy *wiphy, |
623 | struct regulatory_request *request)) | |
43fcb430 | 624 | { |
de1c732b LR |
625 | struct ath_common *common = container_of(reg, struct ath_common, |
626 | regulatory); | |
43fcb430 LR |
627 | int r; |
628 | ||
629 | r = __ath_regd_init(reg); | |
630 | if (r) | |
631 | return r; | |
632 | ||
de1c732b LR |
633 | if (ath_is_world_regd(reg)) |
634 | memcpy(&common->reg_world_copy, reg, | |
635 | sizeof(struct ath_regulatory)); | |
636 | ||
e3bb249b | 637 | ath_regd_init_wiphy(reg, wiphy, reg_notifier); |
43fcb430 | 638 | |
5f8e077c | 639 | return 0; |
f078f209 | 640 | } |
3a702e49 | 641 | EXPORT_SYMBOL(ath_regd_init); |
f078f209 | 642 | |
3a702e49 BC |
643 | u32 ath_regd_get_band_ctl(struct ath_regulatory *reg, |
644 | enum ieee80211_band band) | |
f078f209 | 645 | { |
c02cf373 BC |
646 | if (!reg->regpair || |
647 | (reg->country_code == CTRY_DEFAULT && | |
3a702e49 | 648 | is_wwr_sku(ath_regd_get_eepromRD(reg)))) { |
fc2ada30 BC |
649 | return SD_NO_CTL; |
650 | } | |
651 | ||
652 | switch (band) { | |
653 | case IEEE80211_BAND_2GHZ: | |
c02cf373 | 654 | return reg->regpair->reg_2ghz_ctl; |
fc2ada30 | 655 | case IEEE80211_BAND_5GHZ: |
c02cf373 | 656 | return reg->regpair->reg_5ghz_ctl; |
fc2ada30 BC |
657 | default: |
658 | return NO_CTL; | |
f078f209 | 659 | } |
fc2ada30 | 660 | } |
3a702e49 | 661 | EXPORT_SYMBOL(ath_regd_get_band_ctl); |