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Commit | Line | Data |
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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 | ||
17 | #include <linux/kernel.h> | |
3a702e49 BC |
18 | #include <net/cfg80211.h> |
19 | #include <net/mac80211.h> | |
3a702e49 | 20 | #include "regd.h" |
f078f209 LR |
21 | #include "regd_common.h" |
22 | ||
5f8e077c LR |
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 | */ | |
f078f209 | 29 | |
5f8e077c LR |
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 | |
cfcfe446 | 53 | |
5f8e077c LR |
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 */ | |
3a702e49 | 60 | static const struct ieee80211_regdomain ath_world_regdom_60_61_62 = { |
5f8e077c LR |
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 */ | |
3a702e49 | 70 | static const struct ieee80211_regdomain ath_world_regdom_63_65 = { |
5f8e077c LR |
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 */ | |
3a702e49 | 81 | static const struct ieee80211_regdomain ath_world_regdom_64 = { |
5f8e077c LR |
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 */ | |
3a702e49 | 91 | static const struct ieee80211_regdomain ath_world_regdom_66_69 = { |
5f8e077c LR |
92 | .n_reg_rules = 3, |
93 | .alpha2 = "99", | |
94 | .reg_rules = { | |
95 | ATH9K_2GHZ_CH01_11, | |
96 | ATH9K_5GHZ_ALL, | |
97 | } | |
98 | }; | |
99 | ||
34a0a202 SB |
100 | /* Can be used by 0x67, 0x68, 0x6A and 0x6C */ |
101 | static const struct ieee80211_regdomain ath_world_regdom_67_68_6A_6C = { | |
5f8e077c LR |
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 | }; | |
f078f209 | 110 | |
d0f48f9d BC |
111 | static inline bool is_wwr_sku(u16 regd) |
112 | { | |
641eabb0 CL |
113 | return ((regd & COUNTRY_ERD_FLAG) != COUNTRY_ERD_FLAG) && |
114 | (((regd & WORLD_SKU_MASK) == WORLD_SKU_PREFIX) || | |
115 | (regd == WORLD)); | |
d0f48f9d BC |
116 | } |
117 | ||
3a702e49 | 118 | static u16 ath_regd_get_eepromRD(struct ath_regulatory *reg) |
f078f209 | 119 | { |
c02cf373 | 120 | return reg->current_rd & ~WORLDWIDE_ROAMING_FLAG; |
f078f209 LR |
121 | } |
122 | ||
3a702e49 | 123 | bool ath_is_world_regd(struct ath_regulatory *reg) |
5f8e077c | 124 | { |
3a702e49 | 125 | return is_wwr_sku(ath_regd_get_eepromRD(reg)); |
f078f209 | 126 | } |
3a702e49 | 127 | EXPORT_SYMBOL(ath_is_world_regd); |
f078f209 | 128 | |
e3bb249b | 129 | static const struct ieee80211_regdomain *ath_default_world_regdomain(void) |
f078f209 | 130 | { |
5f8e077c | 131 | /* this is the most restrictive */ |
3a702e49 | 132 | return &ath_world_regdom_64; |
5f8e077c | 133 | } |
f078f209 | 134 | |
e3bb249b | 135 | static const struct |
3a702e49 | 136 | ieee80211_regdomain *ath_world_regdomain(struct ath_regulatory *reg) |
5f8e077c | 137 | { |
c02cf373 | 138 | switch (reg->regpair->regDmnEnum) { |
5f8e077c LR |
139 | case 0x60: |
140 | case 0x61: | |
141 | case 0x62: | |
3a702e49 | 142 | return &ath_world_regdom_60_61_62; |
5f8e077c LR |
143 | case 0x63: |
144 | case 0x65: | |
3a702e49 | 145 | return &ath_world_regdom_63_65; |
5f8e077c | 146 | case 0x64: |
3a702e49 | 147 | return &ath_world_regdom_64; |
5f8e077c LR |
148 | case 0x66: |
149 | case 0x69: | |
3a702e49 | 150 | return &ath_world_regdom_66_69; |
5f8e077c LR |
151 | case 0x67: |
152 | case 0x68: | |
153 | case 0x6A: | |
34a0a202 SB |
154 | case 0x6C: |
155 | return &ath_world_regdom_67_68_6A_6C; | |
5f8e077c LR |
156 | default: |
157 | WARN_ON(1); | |
3a702e49 | 158 | return ath_default_world_regdomain(); |
f078f209 | 159 | } |
f078f209 LR |
160 | } |
161 | ||
5719efdd BR |
162 | bool ath_is_49ghz_allowed(u16 regdomain) |
163 | { | |
164 | /* possibly more */ | |
165 | return regdomain == MKK9_MKKC; | |
166 | } | |
167 | EXPORT_SYMBOL(ath_is_49ghz_allowed); | |
168 | ||
547e4c2e | 169 | /* Frequency is one where radar detection is required */ |
3a702e49 | 170 | static bool ath_is_radar_freq(u16 center_freq) |
547e4c2e LR |
171 | { |
172 | return (center_freq >= 5260 && center_freq <= 5700); | |
173 | } | |
174 | ||
7519a8f0 | 175 | /* |
84540869 LR |
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). | |
7519a8f0 | 183 | */ |
6b2b2ffb LR |
184 | static void |
185 | ath_reg_apply_beaconing_flags(struct wiphy *wiphy, | |
186 | enum nl80211_reg_initiator initiator) | |
f078f209 | 187 | { |
84540869 | 188 | enum ieee80211_band band; |
5f8e077c LR |
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 | ||
84540869 | 196 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
f078f209 | 197 | |
84540869 | 198 | if (!wiphy->bands[band]) |
5f8e077c | 199 | continue; |
84540869 LR |
200 | |
201 | sband = wiphy->bands[band]; | |
202 | ||
203 | for (i = 0; i < sband->n_channels; i++) { | |
204 | ||
205 | ch = &sband->channels[i]; | |
206 | ||
3a702e49 | 207 | if (ath_is_radar_freq(ch->center_freq) || |
84540869 LR |
208 | (ch->flags & IEEE80211_CHAN_RADAR)) |
209 | continue; | |
210 | ||
7db90f4a | 211 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) { |
038659e7 LR |
212 | r = freq_reg_info(wiphy, |
213 | ch->center_freq, | |
214 | bandwidth, | |
215 | ®_rule); | |
84540869 LR |
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 | } | |
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; | |
252 | u32 bandwidth = 0; | |
253 | int r; | |
254 | ||
5f8e077c LR |
255 | sband = wiphy->bands[IEEE80211_BAND_2GHZ]; |
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 */ |
038659e7 | 279 | r = freq_reg_info(wiphy, ch->center_freq, bandwidth, ®_rule); |
5f8e077c LR |
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; | |
f078f209 LR |
284 | } |
285 | ||
5f8e077c | 286 | ch = &sband->channels[12]; /* CH 13 */ |
038659e7 | 287 | r = freq_reg_info(wiphy, ch->center_freq, bandwidth, ®_rule); |
5f8e077c LR |
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; | |
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 | |
3a702e49 | 347 | int ath_reg_notifier_apply(struct wiphy *wiphy, |
6b2b2ffb LR |
348 | struct regulatory_request *request, |
349 | struct ath_regulatory *reg) | |
5f8e077c | 350 | { |
5f8e077c | 351 | /* We always apply this */ |
3a702e49 | 352 | ath_reg_apply_radar_flags(wiphy); |
f078f209 | 353 | |
931299cf LR |
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 | ||
5f8e077c | 362 | switch (request->initiator) { |
7db90f4a LR |
363 | case NL80211_REGDOM_SET_BY_DRIVER: |
364 | case NL80211_REGDOM_SET_BY_CORE: | |
365 | case NL80211_REGDOM_SET_BY_USER: | |
5f8e077c | 366 | break; |
7db90f4a | 367 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
3a702e49 BC |
368 | if (ath_is_world_regd(reg)) |
369 | ath_reg_apply_world_flags(wiphy, request->initiator, | |
370 | reg); | |
5f8e077c LR |
371 | break; |
372 | } | |
f078f209 | 373 | |
5f8e077c | 374 | return 0; |
f078f209 | 375 | } |
3a702e49 | 376 | EXPORT_SYMBOL(ath_reg_notifier_apply); |
f078f209 | 377 | |
e3bb249b | 378 | static bool ath_regd_is_eeprom_valid(struct ath_regulatory *reg) |
c02cf373 | 379 | { |
cfcfe446 | 380 | u16 rd = ath_regd_get_eepromRD(reg); |
5f8e077c | 381 | int i; |
f078f209 | 382 | |
5f8e077c LR |
383 | if (rd & COUNTRY_ERD_FLAG) { |
384 | /* EEPROM value is a country code */ | |
385 | u16 cc = rd & ~COUNTRY_ERD_FLAG; | |
e03e5ffd LR |
386 | printk(KERN_DEBUG |
387 | "ath: EEPROM indicates we should expect " | |
388 | "a country code\n"); | |
5f8e077c LR |
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 */ | |
e03e5ffd LR |
394 | if (rd != CTRY_DEFAULT) |
395 | printk(KERN_DEBUG "ath: EEPROM indicates we " | |
396 | "should expect a direct regpair map\n"); | |
5f8e077c LR |
397 | for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) |
398 | if (regDomainPairs[i].regDmnEnum == rd) | |
399 | return true; | |
f078f209 | 400 | } |
c02cf373 | 401 | printk(KERN_DEBUG |
3a702e49 | 402 | "ath: invalid regulatory domain/country code 0x%x\n", rd); |
f078f209 LR |
403 | return false; |
404 | } | |
405 | ||
5f8e077c | 406 | /* EEPROM country code to regpair mapping */ |
f078f209 | 407 | static struct country_code_to_enum_rd* |
3a702e49 | 408 | ath_regd_find_country(u16 countryCode) |
f078f209 LR |
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 | ||
5f8e077c LR |
419 | /* EEPROM rd code to regpair mapping */ |
420 | static struct country_code_to_enum_rd* | |
3a702e49 | 421 | ath_regd_find_country_by_rd(int regdmn) |
5f8e077c LR |
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 */ | |
3a702e49 | 433 | static u16 ath_regd_get_default_country(u16 rd) |
f078f209 | 434 | { |
f078f209 LR |
435 | if (rd & COUNTRY_ERD_FLAG) { |
436 | struct country_code_to_enum_rd *country = NULL; | |
437 | u16 cc = rd & ~COUNTRY_ERD_FLAG; | |
438 | ||
3a702e49 | 439 | country = ath_regd_find_country(cc); |
f078f209 LR |
440 | if (country != NULL) |
441 | return cc; | |
442 | } | |
443 | ||
f078f209 LR |
444 | return CTRY_DEFAULT; |
445 | } | |
446 | ||
5f8e077c | 447 | static struct reg_dmn_pair_mapping* |
3a702e49 | 448 | ath_get_regpair(int regdmn) |
f078f209 LR |
449 | { |
450 | int i; | |
451 | ||
5f8e077c LR |
452 | if (regdmn == NO_ENUMRD) |
453 | return NULL; | |
f078f209 | 454 | for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) { |
5f8e077c LR |
455 | if (regDomainPairs[i].regDmnEnum == regdmn) |
456 | return ®DomainPairs[i]; | |
f078f209 | 457 | } |
5f8e077c | 458 | return NULL; |
f078f209 LR |
459 | } |
460 | ||
6b2b2ffb LR |
461 | static int |
462 | ath_regd_init_wiphy(struct ath_regulatory *reg, | |
463 | struct wiphy *wiphy, | |
464 | int (*reg_notifier)(struct wiphy *wiphy, | |
e3bb249b BC |
465 | struct regulatory_request *request)) |
466 | { | |
467 | const struct ieee80211_regdomain *regd; | |
468 | ||
469 | wiphy->reg_notifier = reg_notifier; | |
5be83de5 | 470 | wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY; |
e3bb249b BC |
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); | |
5be83de5 | 478 | wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY; |
e3bb249b BC |
479 | } else { |
480 | /* | |
25985edc | 481 | * This gets applied in the case of the absence of CRDA, |
e3bb249b BC |
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 | ||
5d2214ac LR |
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 | */ | |
500 | static 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 | ||
6b2b2ffb LR |
508 | int |
509 | ath_regd_init(struct ath_regulatory *reg, | |
510 | struct wiphy *wiphy, | |
511 | int (*reg_notifier)(struct wiphy *wiphy, | |
512 | struct regulatory_request *request)) | |
f078f209 | 513 | { |
f078f209 | 514 | struct country_code_to_enum_rd *country = NULL; |
e775aaf0 | 515 | u16 regdmn; |
f078f209 | 516 | |
e03e5ffd LR |
517 | if (!reg) |
518 | return -EINVAL; | |
519 | ||
5d2214ac LR |
520 | ath_regd_sanitize(reg); |
521 | ||
e03e5ffd LR |
522 | printk(KERN_DEBUG "ath: EEPROM regdomain: 0x%0x\n", reg->current_rd); |
523 | ||
3a702e49 | 524 | if (!ath_regd_is_eeprom_valid(reg)) { |
85efc86e | 525 | printk(KERN_ERR "ath: Invalid EEPROM contents\n"); |
5f8e077c | 526 | return -EINVAL; |
f078f209 LR |
527 | } |
528 | ||
3a702e49 BC |
529 | regdmn = ath_regd_get_eepromRD(reg); |
530 | reg->country_code = ath_regd_get_default_country(regdmn); | |
f078f209 | 531 | |
c02cf373 | 532 | if (reg->country_code == CTRY_DEFAULT && |
e03e5ffd LR |
533 | regdmn == CTRY_DEFAULT) { |
534 | printk(KERN_DEBUG "ath: EEPROM indicates default " | |
535 | "country code should be used\n"); | |
c02cf373 | 536 | reg->country_code = CTRY_UNITED_STATES; |
e03e5ffd | 537 | } |
f078f209 | 538 | |
c02cf373 | 539 | if (reg->country_code == CTRY_DEFAULT) { |
f078f209 LR |
540 | country = NULL; |
541 | } else { | |
e03e5ffd LR |
542 | printk(KERN_DEBUG "ath: doing EEPROM country->regdmn " |
543 | "map search\n"); | |
3a702e49 | 544 | country = ath_regd_find_country(reg->country_code); |
f078f209 | 545 | if (country == NULL) { |
c02cf373 | 546 | printk(KERN_DEBUG |
e03e5ffd LR |
547 | "ath: no valid country maps found for " |
548 | "country code: 0x%0x\n", | |
c02cf373 | 549 | reg->country_code); |
5f8e077c | 550 | return -EINVAL; |
e03e5ffd | 551 | } else { |
f078f209 | 552 | regdmn = country->regDmnEnum; |
e03e5ffd LR |
553 | printk(KERN_DEBUG "ath: country maps to " |
554 | "regdmn code: 0x%0x\n", | |
555 | regdmn); | |
556 | } | |
f078f209 LR |
557 | } |
558 | ||
3a702e49 | 559 | reg->regpair = ath_get_regpair(regdmn); |
f078f209 | 560 | |
c02cf373 | 561 | if (!reg->regpair) { |
3a702e49 | 562 | printk(KERN_DEBUG "ath: " |
5f8e077c LR |
563 | "No regulatory domain pair found, cannot continue\n"); |
564 | return -EINVAL; | |
f078f209 | 565 | } |
f078f209 | 566 | |
5f8e077c | 567 | if (!country) |
3a702e49 | 568 | country = ath_regd_find_country_by_rd(regdmn); |
f078f209 | 569 | |
5f8e077c | 570 | if (country) { |
c02cf373 BC |
571 | reg->alpha2[0] = country->isoName[0]; |
572 | reg->alpha2[1] = country->isoName[1]; | |
f078f209 | 573 | } else { |
c02cf373 BC |
574 | reg->alpha2[0] = '0'; |
575 | reg->alpha2[1] = '0'; | |
f078f209 LR |
576 | } |
577 | ||
3a702e49 | 578 | printk(KERN_DEBUG "ath: Country alpha2 being used: %c%c\n", |
c02cf373 | 579 | reg->alpha2[0], reg->alpha2[1]); |
e03e5ffd | 580 | printk(KERN_DEBUG "ath: Regpair used: 0x%0x\n", |
c02cf373 | 581 | reg->regpair->regDmnEnum); |
f078f209 | 582 | |
e3bb249b | 583 | ath_regd_init_wiphy(reg, wiphy, reg_notifier); |
5f8e077c | 584 | return 0; |
f078f209 | 585 | } |
3a702e49 | 586 | EXPORT_SYMBOL(ath_regd_init); |
f078f209 | 587 | |
3a702e49 BC |
588 | u32 ath_regd_get_band_ctl(struct ath_regulatory *reg, |
589 | enum ieee80211_band band) | |
f078f209 | 590 | { |
c02cf373 BC |
591 | if (!reg->regpair || |
592 | (reg->country_code == CTRY_DEFAULT && | |
3a702e49 | 593 | is_wwr_sku(ath_regd_get_eepromRD(reg)))) { |
fc2ada30 BC |
594 | return SD_NO_CTL; |
595 | } | |
596 | ||
597 | switch (band) { | |
598 | case IEEE80211_BAND_2GHZ: | |
c02cf373 | 599 | return reg->regpair->reg_2ghz_ctl; |
fc2ada30 | 600 | case IEEE80211_BAND_5GHZ: |
c02cf373 | 601 | return reg->regpair->reg_5ghz_ctl; |
fc2ada30 BC |
602 | default: |
603 | return NO_CTL; | |
f078f209 | 604 | } |
fc2ada30 | 605 | } |
3a702e49 | 606 | EXPORT_SYMBOL(ath_regd_get_band_ctl); |