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,\ | |
8fe02e16 | 40 | NL80211_RRF_NO_IR) |
5f8e077c | 41 | #define ATH9K_2GHZ_CH14 REG_RULE(2484-10, 2484+10, 40, 0, 20,\ |
8fe02e16 LR |
42 | NL80211_RRF_NO_IR | \ |
43 | NL80211_RRF_NO_OFDM) | |
5f8e077c LR |
44 | |
45 | /* We allow IBSS on these on a case by case basis by regulatory domain */ | |
d619c62f | 46 | #define ATH9K_5GHZ_5150_5350 REG_RULE(5150-10, 5350+10, 80, 0, 30,\ |
8fe02e16 | 47 | NL80211_RRF_NO_IR) |
d619c62f | 48 | #define ATH9K_5GHZ_5470_5850 REG_RULE(5470-10, 5850+10, 80, 0, 30,\ |
8fe02e16 | 49 | NL80211_RRF_NO_IR) |
d619c62f | 50 | #define ATH9K_5GHZ_5725_5850 REG_RULE(5725-10, 5850+10, 80, 0, 30,\ |
8fe02e16 | 51 | NL80211_RRF_NO_IR) |
5f8e077c LR |
52 | |
53 | #define ATH9K_2GHZ_ALL ATH9K_2GHZ_CH01_11, \ | |
54 | ATH9K_2GHZ_CH12_13, \ | |
55 | ATH9K_2GHZ_CH14 | |
56 | ||
57 | #define ATH9K_5GHZ_ALL ATH9K_5GHZ_5150_5350, \ | |
58 | ATH9K_5GHZ_5470_5850 | |
cfcfe446 | 59 | |
5f8e077c LR |
60 | /* This one skips what we call "mid band" */ |
61 | #define ATH9K_5GHZ_NO_MIDBAND ATH9K_5GHZ_5150_5350, \ | |
62 | ATH9K_5GHZ_5725_5850 | |
63 | ||
64 | /* Can be used for: | |
65 | * 0x60, 0x61, 0x62 */ | |
3a702e49 | 66 | static const struct ieee80211_regdomain ath_world_regdom_60_61_62 = { |
5f8e077c LR |
67 | .n_reg_rules = 5, |
68 | .alpha2 = "99", | |
69 | .reg_rules = { | |
70 | ATH9K_2GHZ_ALL, | |
71 | ATH9K_5GHZ_ALL, | |
72 | } | |
73 | }; | |
74 | ||
75 | /* Can be used by 0x63 and 0x65 */ | |
3a702e49 | 76 | static const struct ieee80211_regdomain ath_world_regdom_63_65 = { |
5f8e077c LR |
77 | .n_reg_rules = 4, |
78 | .alpha2 = "99", | |
79 | .reg_rules = { | |
80 | ATH9K_2GHZ_CH01_11, | |
81 | ATH9K_2GHZ_CH12_13, | |
82 | ATH9K_5GHZ_NO_MIDBAND, | |
83 | } | |
84 | }; | |
85 | ||
86 | /* Can be used by 0x64 only */ | |
3a702e49 | 87 | static const struct ieee80211_regdomain ath_world_regdom_64 = { |
5f8e077c LR |
88 | .n_reg_rules = 3, |
89 | .alpha2 = "99", | |
90 | .reg_rules = { | |
91 | ATH9K_2GHZ_CH01_11, | |
92 | ATH9K_5GHZ_NO_MIDBAND, | |
93 | } | |
94 | }; | |
95 | ||
96 | /* Can be used by 0x66 and 0x69 */ | |
3a702e49 | 97 | static const struct ieee80211_regdomain ath_world_regdom_66_69 = { |
5f8e077c LR |
98 | .n_reg_rules = 3, |
99 | .alpha2 = "99", | |
100 | .reg_rules = { | |
101 | ATH9K_2GHZ_CH01_11, | |
102 | ATH9K_5GHZ_ALL, | |
103 | } | |
104 | }; | |
105 | ||
34a0a202 SB |
106 | /* Can be used by 0x67, 0x68, 0x6A and 0x6C */ |
107 | static const struct ieee80211_regdomain ath_world_regdom_67_68_6A_6C = { | |
5f8e077c LR |
108 | .n_reg_rules = 4, |
109 | .alpha2 = "99", | |
110 | .reg_rules = { | |
111 | ATH9K_2GHZ_CH01_11, | |
112 | ATH9K_2GHZ_CH12_13, | |
113 | ATH9K_5GHZ_ALL, | |
114 | } | |
115 | }; | |
f078f209 | 116 | |
a44ea6ff LR |
117 | static bool dynamic_country_user_possible(struct ath_regulatory *reg) |
118 | { | |
119 | if (config_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 | ||
ba94c049 LR |
189 | static bool ath_reg_dyn_country_user_allow(struct ath_regulatory *reg) |
190 | { | |
191 | if (!config_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 | ||
d0f48f9d BC |
198 | static inline bool is_wwr_sku(u16 regd) |
199 | { | |
641eabb0 CL |
200 | return ((regd & COUNTRY_ERD_FLAG) != COUNTRY_ERD_FLAG) && |
201 | (((regd & WORLD_SKU_MASK) == WORLD_SKU_PREFIX) || | |
202 | (regd == WORLD)); | |
d0f48f9d BC |
203 | } |
204 | ||
3a702e49 | 205 | static u16 ath_regd_get_eepromRD(struct ath_regulatory *reg) |
f078f209 | 206 | { |
c02cf373 | 207 | return reg->current_rd & ~WORLDWIDE_ROAMING_FLAG; |
f078f209 LR |
208 | } |
209 | ||
3a702e49 | 210 | bool ath_is_world_regd(struct ath_regulatory *reg) |
5f8e077c | 211 | { |
3a702e49 | 212 | return is_wwr_sku(ath_regd_get_eepromRD(reg)); |
f078f209 | 213 | } |
3a702e49 | 214 | EXPORT_SYMBOL(ath_is_world_regd); |
f078f209 | 215 | |
e3bb249b | 216 | static const struct ieee80211_regdomain *ath_default_world_regdomain(void) |
f078f209 | 217 | { |
5f8e077c | 218 | /* this is the most restrictive */ |
3a702e49 | 219 | return &ath_world_regdom_64; |
5f8e077c | 220 | } |
f078f209 | 221 | |
e3bb249b | 222 | static const struct |
3a702e49 | 223 | ieee80211_regdomain *ath_world_regdomain(struct ath_regulatory *reg) |
5f8e077c | 224 | { |
c02cf373 | 225 | switch (reg->regpair->regDmnEnum) { |
5f8e077c LR |
226 | case 0x60: |
227 | case 0x61: | |
228 | case 0x62: | |
3a702e49 | 229 | return &ath_world_regdom_60_61_62; |
5f8e077c LR |
230 | case 0x63: |
231 | case 0x65: | |
3a702e49 | 232 | return &ath_world_regdom_63_65; |
5f8e077c | 233 | case 0x64: |
3a702e49 | 234 | return &ath_world_regdom_64; |
5f8e077c LR |
235 | case 0x66: |
236 | case 0x69: | |
3a702e49 | 237 | return &ath_world_regdom_66_69; |
5f8e077c LR |
238 | case 0x67: |
239 | case 0x68: | |
240 | case 0x6A: | |
34a0a202 SB |
241 | case 0x6C: |
242 | return &ath_world_regdom_67_68_6A_6C; | |
5f8e077c LR |
243 | default: |
244 | WARN_ON(1); | |
3a702e49 | 245 | return ath_default_world_regdomain(); |
f078f209 | 246 | } |
f078f209 LR |
247 | } |
248 | ||
5719efdd BR |
249 | bool ath_is_49ghz_allowed(u16 regdomain) |
250 | { | |
251 | /* possibly more */ | |
252 | return regdomain == MKK9_MKKC; | |
253 | } | |
254 | EXPORT_SYMBOL(ath_is_49ghz_allowed); | |
255 | ||
547e4c2e | 256 | /* Frequency is one where radar detection is required */ |
3a702e49 | 257 | static bool ath_is_radar_freq(u16 center_freq) |
547e4c2e LR |
258 | { |
259 | return (center_freq >= 5260 && center_freq <= 5700); | |
260 | } | |
261 | ||
bc0aa069 LR |
262 | static void ath_force_clear_no_ir_chan(struct wiphy *wiphy, |
263 | struct ieee80211_channel *ch) | |
264 | { | |
265 | const struct ieee80211_reg_rule *reg_rule; | |
266 | ||
62452a99 | 267 | reg_rule = freq_reg_info(wiphy, MHZ_TO_KHZ(ch->center_freq)); |
bc0aa069 LR |
268 | if (IS_ERR(reg_rule)) |
269 | return; | |
270 | ||
271 | if (!(reg_rule->flags & NL80211_RRF_NO_IR)) | |
272 | if (ch->flags & IEEE80211_CHAN_NO_IR) | |
273 | ch->flags &= ~IEEE80211_CHAN_NO_IR; | |
274 | } | |
275 | ||
276 | static void ath_force_clear_no_ir_freq(struct wiphy *wiphy, u16 center_freq) | |
277 | { | |
278 | struct ieee80211_channel *ch; | |
279 | ||
280 | ch = ieee80211_get_channel(wiphy, center_freq); | |
281 | if (!ch) | |
282 | return; | |
283 | ||
284 | ath_force_clear_no_ir_chan(wiphy, ch); | |
285 | } | |
286 | ||
287 | static void ath_force_no_ir_chan(struct ieee80211_channel *ch) | |
288 | { | |
289 | ch->flags |= IEEE80211_CHAN_NO_IR; | |
290 | } | |
291 | ||
292 | static void ath_force_no_ir_freq(struct wiphy *wiphy, u16 center_freq) | |
293 | { | |
294 | struct ieee80211_channel *ch; | |
295 | ||
296 | ch = ieee80211_get_channel(wiphy, center_freq); | |
297 | if (!ch) | |
298 | return; | |
299 | ||
300 | ath_force_no_ir_chan(ch); | |
301 | } | |
302 | ||
07782d94 LR |
303 | static void |
304 | __ath_reg_apply_beaconing_flags(struct wiphy *wiphy, | |
251c9ba1 | 305 | struct ath_regulatory *reg, |
07782d94 LR |
306 | enum nl80211_reg_initiator initiator, |
307 | struct ieee80211_channel *ch) | |
308 | { | |
309 | if (ath_is_radar_freq(ch->center_freq) || | |
310 | (ch->flags & IEEE80211_CHAN_RADAR)) | |
311 | return; | |
312 | ||
313 | switch (initiator) { | |
314 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: | |
315 | ath_force_clear_no_ir_chan(wiphy, ch); | |
316 | break; | |
251c9ba1 LR |
317 | case NL80211_REGDOM_SET_BY_USER: |
318 | if (ath_reg_dyn_country_user_allow(reg)) | |
319 | ath_force_clear_no_ir_chan(wiphy, ch); | |
320 | break; | |
07782d94 LR |
321 | default: |
322 | if (ch->beacon_found) | |
323 | ch->flags &= ~IEEE80211_CHAN_NO_IR; | |
324 | } | |
325 | } | |
326 | ||
7519a8f0 | 327 | /* |
6c3af588 | 328 | * These exception rules do not apply radar frequencies. |
84540869 | 329 | * |
6c3af588 | 330 | * - We enable initiating radiation if the country IE says its fine: |
84540869 | 331 | * - If no country IE has been processed and a we determine we have |
6c3af588 | 332 | * received a beacon on a channel we can enable initiating radiation. |
7519a8f0 | 333 | */ |
6b2b2ffb LR |
334 | static void |
335 | ath_reg_apply_beaconing_flags(struct wiphy *wiphy, | |
251c9ba1 | 336 | struct ath_regulatory *reg, |
6b2b2ffb | 337 | enum nl80211_reg_initiator initiator) |
f078f209 | 338 | { |
84540869 | 339 | enum ieee80211_band band; |
5f8e077c | 340 | struct ieee80211_supported_band *sband; |
5f8e077c LR |
341 | struct ieee80211_channel *ch; |
342 | unsigned int i; | |
5f8e077c | 343 | |
84540869 | 344 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
84540869 | 345 | if (!wiphy->bands[band]) |
5f8e077c | 346 | continue; |
84540869 | 347 | sband = wiphy->bands[band]; |
84540869 | 348 | for (i = 0; i < sband->n_channels; i++) { |
84540869 | 349 | ch = &sband->channels[i]; |
251c9ba1 LR |
350 | __ath_reg_apply_beaconing_flags(wiphy, reg, |
351 | initiator, ch); | |
84540869 | 352 | } |
5f8e077c | 353 | } |
f078f209 LR |
354 | } |
355 | ||
bc0aa069 | 356 | /** |
f33cbc4f | 357 | * ath_reg_apply_ir_flags() |
bc0aa069 LR |
358 | * @wiphy: the wiphy to use |
359 | * @initiator: the regulatory hint initiator | |
360 | * | |
361 | * If no country IE has been received always enable passive scan | |
362 | * and no-ibss on these channels. This is only done for specific | |
363 | * regulatory SKUs. | |
364 | * | |
365 | * If a country IE has been received check its rule for this | |
366 | * channel first before enabling active scan. The passive scan | |
367 | * would have been enforced by the initial processing of our | |
368 | * custom regulatory domain. | |
369 | */ | |
6b2b2ffb | 370 | static void |
f33cbc4f | 371 | ath_reg_apply_ir_flags(struct wiphy *wiphy, |
251c9ba1 LR |
372 | struct ath_regulatory *reg, |
373 | enum nl80211_reg_initiator initiator) | |
f078f209 | 374 | { |
5f8e077c | 375 | struct ieee80211_supported_band *sband; |
5f8e077c | 376 | |
5f8e077c | 377 | sband = wiphy->bands[IEEE80211_BAND_2GHZ]; |
a59be081 HS |
378 | if (!sband) |
379 | return; | |
5f8e077c | 380 | |
bc0aa069 LR |
381 | switch(initiator) { |
382 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: | |
383 | ath_force_clear_no_ir_freq(wiphy, 2467); | |
384 | ath_force_clear_no_ir_freq(wiphy, 2472); | |
385 | break; | |
251c9ba1 LR |
386 | case NL80211_REGDOM_SET_BY_USER: |
387 | if (!ath_reg_dyn_country_user_allow(reg)) | |
388 | break; | |
389 | ath_force_clear_no_ir_freq(wiphy, 2467); | |
390 | ath_force_clear_no_ir_freq(wiphy, 2472); | |
391 | break; | |
bc0aa069 LR |
392 | default: |
393 | ath_force_no_ir_freq(wiphy, 2467); | |
394 | ath_force_no_ir_freq(wiphy, 2472); | |
f078f209 | 395 | } |
f078f209 LR |
396 | } |
397 | ||
5f8e077c | 398 | /* Always apply Radar/DFS rules on freq range 5260 MHz - 5700 MHz */ |
e3bb249b | 399 | static void ath_reg_apply_radar_flags(struct wiphy *wiphy) |
f078f209 | 400 | { |
5f8e077c LR |
401 | struct ieee80211_supported_band *sband; |
402 | struct ieee80211_channel *ch; | |
403 | unsigned int i; | |
f078f209 | 404 | |
5f8e077c LR |
405 | if (!wiphy->bands[IEEE80211_BAND_5GHZ]) |
406 | return; | |
f078f209 | 407 | |
5f8e077c | 408 | sband = wiphy->bands[IEEE80211_BAND_5GHZ]; |
f078f209 | 409 | |
5f8e077c LR |
410 | for (i = 0; i < sband->n_channels; i++) { |
411 | ch = &sband->channels[i]; | |
3a702e49 | 412 | if (!ath_is_radar_freq(ch->center_freq)) |
5f8e077c LR |
413 | continue; |
414 | /* We always enable radar detection/DFS on this | |
415 | * frequency range. Additionally we also apply on | |
416 | * this frequency range: | |
417 | * - If STA mode does not yet have DFS supports disable | |
418 | * active scanning | |
419 | * - If adhoc mode does not support DFS yet then | |
420 | * disable adhoc in the frequency. | |
421 | * - If AP mode does not yet support radar detection/DFS | |
422 | * do not allow AP mode | |
423 | */ | |
424 | if (!(ch->flags & IEEE80211_CHAN_DISABLED)) | |
425 | ch->flags |= IEEE80211_CHAN_RADAR | | |
8fe02e16 | 426 | IEEE80211_CHAN_NO_IR; |
5f8e077c LR |
427 | } |
428 | } | |
f078f209 | 429 | |
e3bb249b | 430 | static void ath_reg_apply_world_flags(struct wiphy *wiphy, |
6b2b2ffb LR |
431 | enum nl80211_reg_initiator initiator, |
432 | struct ath_regulatory *reg) | |
5f8e077c | 433 | { |
c02cf373 | 434 | switch (reg->regpair->regDmnEnum) { |
5f8e077c LR |
435 | case 0x60: |
436 | case 0x63: | |
437 | case 0x66: | |
438 | case 0x67: | |
2290a9c3 | 439 | case 0x6C: |
251c9ba1 | 440 | ath_reg_apply_beaconing_flags(wiphy, reg, initiator); |
5f8e077c LR |
441 | break; |
442 | case 0x68: | |
251c9ba1 LR |
443 | ath_reg_apply_beaconing_flags(wiphy, reg, initiator); |
444 | ath_reg_apply_ir_flags(wiphy, reg, initiator); | |
5f8e077c | 445 | break; |
251c9ba1 LR |
446 | default: |
447 | if (ath_reg_dyn_country_user_allow(reg)) | |
448 | ath_reg_apply_beaconing_flags(wiphy, reg, initiator); | |
5f8e077c | 449 | } |
5f8e077c | 450 | } |
f078f209 | 451 | |
de1c732b LR |
452 | static u16 ath_regd_find_country_by_name(char *alpha2) |
453 | { | |
454 | unsigned int i; | |
455 | ||
456 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) { | |
457 | if (!memcmp(allCountries[i].isoName, alpha2, 2)) | |
458 | return allCountries[i].countryCode; | |
459 | } | |
460 | ||
461 | return -1; | |
462 | } | |
463 | ||
8a3b6c80 LR |
464 | static int __ath_reg_dyn_country(struct wiphy *wiphy, |
465 | struct ath_regulatory *reg, | |
466 | struct regulatory_request *request) | |
467 | { | |
468 | u16 country_code; | |
469 | ||
3e850edd LR |
470 | if (request->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && |
471 | !ath_is_world_regd(reg)) | |
8a3b6c80 LR |
472 | return -EINVAL; |
473 | ||
474 | country_code = ath_regd_find_country_by_name(request->alpha2); | |
475 | if (country_code == (u16) -1) | |
476 | return -EINVAL; | |
477 | ||
478 | reg->current_rd = COUNTRY_ERD_FLAG; | |
479 | reg->current_rd |= country_code; | |
480 | ||
481 | __ath_regd_init(reg); | |
482 | ||
483 | ath_reg_apply_world_flags(wiphy, request->initiator, reg); | |
484 | ||
485 | return 0; | |
486 | } | |
487 | ||
488 | static void ath_reg_dyn_country(struct wiphy *wiphy, | |
489 | struct ath_regulatory *reg, | |
490 | struct regulatory_request *request) | |
491 | { | |
492 | if (__ath_reg_dyn_country(wiphy, reg, request)) | |
493 | return; | |
494 | ||
495 | printk(KERN_DEBUG "ath: regdomain 0x%0x " | |
496 | "dynamically updated by %s\n", | |
497 | reg->current_rd, | |
498 | reg_initiator_name(request->initiator)); | |
499 | } | |
500 | ||
0c0280bd LR |
501 | void ath_reg_notifier_apply(struct wiphy *wiphy, |
502 | struct regulatory_request *request, | |
503 | struct ath_regulatory *reg) | |
5f8e077c | 504 | { |
de1c732b LR |
505 | struct ath_common *common = container_of(reg, struct ath_common, |
506 | regulatory); | |
5f8e077c | 507 | /* We always apply this */ |
3a702e49 | 508 | ath_reg_apply_radar_flags(wiphy); |
f078f209 | 509 | |
931299cf LR |
510 | /* |
511 | * This would happen when we have sent a custom regulatory request | |
512 | * a world regulatory domain and the scheduler hasn't yet processed | |
513 | * any pending requests in the queue. | |
514 | */ | |
515 | if (!request) | |
0c0280bd | 516 | return; |
931299cf | 517 | |
5f8e077c | 518 | switch (request->initiator) { |
7db90f4a | 519 | case NL80211_REGDOM_SET_BY_CORE: |
de1c732b LR |
520 | /* |
521 | * If common->reg_world_copy is world roaming it means we *were* | |
522 | * world roaming... so we now have to restore that data. | |
523 | */ | |
524 | if (!ath_is_world_regd(&common->reg_world_copy)) | |
525 | break; | |
526 | ||
527 | memcpy(reg, &common->reg_world_copy, | |
528 | sizeof(struct ath_regulatory)); | |
529 | break; | |
530 | case NL80211_REGDOM_SET_BY_DRIVER: | |
4da225bb | 531 | break; |
7db90f4a | 532 | case NL80211_REGDOM_SET_BY_USER: |
ba94c049 LR |
533 | if (ath_reg_dyn_country_user_allow(reg)) |
534 | ath_reg_dyn_country(wiphy, reg, request); | |
5f8e077c | 535 | break; |
7db90f4a | 536 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
8a3b6c80 | 537 | ath_reg_dyn_country(wiphy, reg, request); |
5f8e077c LR |
538 | break; |
539 | } | |
f078f209 | 540 | } |
3a702e49 | 541 | EXPORT_SYMBOL(ath_reg_notifier_apply); |
f078f209 | 542 | |
e3bb249b | 543 | static bool ath_regd_is_eeprom_valid(struct ath_regulatory *reg) |
c02cf373 | 544 | { |
cfcfe446 | 545 | u16 rd = ath_regd_get_eepromRD(reg); |
5f8e077c | 546 | int i; |
f078f209 | 547 | |
5f8e077c LR |
548 | if (rd & COUNTRY_ERD_FLAG) { |
549 | /* EEPROM value is a country code */ | |
550 | u16 cc = rd & ~COUNTRY_ERD_FLAG; | |
e03e5ffd LR |
551 | printk(KERN_DEBUG |
552 | "ath: EEPROM indicates we should expect " | |
553 | "a country code\n"); | |
5f8e077c LR |
554 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) |
555 | if (allCountries[i].countryCode == cc) | |
556 | return true; | |
557 | } else { | |
558 | /* EEPROM value is a regpair value */ | |
e03e5ffd LR |
559 | if (rd != CTRY_DEFAULT) |
560 | printk(KERN_DEBUG "ath: EEPROM indicates we " | |
561 | "should expect a direct regpair map\n"); | |
5f8e077c LR |
562 | for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) |
563 | if (regDomainPairs[i].regDmnEnum == rd) | |
564 | return true; | |
f078f209 | 565 | } |
c02cf373 | 566 | printk(KERN_DEBUG |
3a702e49 | 567 | "ath: invalid regulatory domain/country code 0x%x\n", rd); |
f078f209 LR |
568 | return false; |
569 | } | |
570 | ||
5f8e077c | 571 | /* EEPROM country code to regpair mapping */ |
f078f209 | 572 | static struct country_code_to_enum_rd* |
3a702e49 | 573 | ath_regd_find_country(u16 countryCode) |
f078f209 LR |
574 | { |
575 | int i; | |
576 | ||
577 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) { | |
578 | if (allCountries[i].countryCode == countryCode) | |
579 | return &allCountries[i]; | |
580 | } | |
581 | return NULL; | |
582 | } | |
583 | ||
5f8e077c LR |
584 | /* EEPROM rd code to regpair mapping */ |
585 | static struct country_code_to_enum_rd* | |
3a702e49 | 586 | ath_regd_find_country_by_rd(int regdmn) |
5f8e077c LR |
587 | { |
588 | int i; | |
589 | ||
590 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) { | |
591 | if (allCountries[i].regDmnEnum == regdmn) | |
592 | return &allCountries[i]; | |
593 | } | |
594 | return NULL; | |
595 | } | |
596 | ||
597 | /* Returns the map of the EEPROM set RD to a country code */ | |
3a702e49 | 598 | static u16 ath_regd_get_default_country(u16 rd) |
f078f209 | 599 | { |
f078f209 LR |
600 | if (rd & COUNTRY_ERD_FLAG) { |
601 | struct country_code_to_enum_rd *country = NULL; | |
602 | u16 cc = rd & ~COUNTRY_ERD_FLAG; | |
603 | ||
3a702e49 | 604 | country = ath_regd_find_country(cc); |
f078f209 LR |
605 | if (country != NULL) |
606 | return cc; | |
607 | } | |
608 | ||
f078f209 LR |
609 | return CTRY_DEFAULT; |
610 | } | |
611 | ||
5f8e077c | 612 | static struct reg_dmn_pair_mapping* |
3a702e49 | 613 | ath_get_regpair(int regdmn) |
f078f209 LR |
614 | { |
615 | int i; | |
616 | ||
5f8e077c LR |
617 | if (regdmn == NO_ENUMRD) |
618 | return NULL; | |
f078f209 | 619 | for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) { |
5f8e077c LR |
620 | if (regDomainPairs[i].regDmnEnum == regdmn) |
621 | return ®DomainPairs[i]; | |
f078f209 | 622 | } |
5f8e077c | 623 | return NULL; |
f078f209 LR |
624 | } |
625 | ||
6b2b2ffb LR |
626 | static int |
627 | ath_regd_init_wiphy(struct ath_regulatory *reg, | |
628 | struct wiphy *wiphy, | |
0c0280bd LR |
629 | void (*reg_notifier)(struct wiphy *wiphy, |
630 | struct regulatory_request *request)) | |
e3bb249b BC |
631 | { |
632 | const struct ieee80211_regdomain *regd; | |
633 | ||
634 | wiphy->reg_notifier = reg_notifier; | |
8fc68580 LR |
635 | wiphy->regulatory_flags |= REGULATORY_STRICT_REG | |
636 | REGULATORY_CUSTOM_REG; | |
e3bb249b BC |
637 | |
638 | if (ath_is_world_regd(reg)) { | |
639 | /* | |
640 | * Anything applied here (prior to wiphy registration) gets | |
641 | * saved on the wiphy orig_* parameters | |
642 | */ | |
643 | regd = ath_world_regdomain(reg); | |
8fc68580 | 644 | wiphy->regulatory_flags |= REGULATORY_COUNTRY_IE_FOLLOW_POWER; |
e3bb249b BC |
645 | } else { |
646 | /* | |
25985edc | 647 | * This gets applied in the case of the absence of CRDA, |
e3bb249b BC |
648 | * it's our own custom world regulatory domain, similar to |
649 | * cfg80211's but we enable passive scanning. | |
650 | */ | |
651 | regd = ath_default_world_regdomain(); | |
652 | } | |
8fc68580 | 653 | |
e3bb249b BC |
654 | wiphy_apply_custom_regulatory(wiphy, regd); |
655 | ath_reg_apply_radar_flags(wiphy); | |
656 | ath_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER, reg); | |
657 | return 0; | |
658 | } | |
659 | ||
5d2214ac LR |
660 | /* |
661 | * Some users have reported their EEPROM programmed with | |
662 | * 0x8000 set, this is not a supported regulatory domain | |
663 | * but since we have more than one user with it we need | |
664 | * a solution for them. We default to 0x64, which is the | |
665 | * default Atheros world regulatory domain. | |
666 | */ | |
667 | static void ath_regd_sanitize(struct ath_regulatory *reg) | |
668 | { | |
669 | if (reg->current_rd != COUNTRY_ERD_FLAG) | |
670 | return; | |
671 | printk(KERN_DEBUG "ath: EEPROM regdomain sanitized\n"); | |
672 | reg->current_rd = 0x64; | |
673 | } | |
674 | ||
43fcb430 | 675 | static int __ath_regd_init(struct ath_regulatory *reg) |
f078f209 | 676 | { |
f078f209 | 677 | struct country_code_to_enum_rd *country = NULL; |
e775aaf0 | 678 | u16 regdmn; |
f078f209 | 679 | |
e03e5ffd LR |
680 | if (!reg) |
681 | return -EINVAL; | |
682 | ||
5d2214ac LR |
683 | ath_regd_sanitize(reg); |
684 | ||
e03e5ffd LR |
685 | printk(KERN_DEBUG "ath: EEPROM regdomain: 0x%0x\n", reg->current_rd); |
686 | ||
3a702e49 | 687 | if (!ath_regd_is_eeprom_valid(reg)) { |
516304b0 | 688 | pr_err("Invalid EEPROM contents\n"); |
5f8e077c | 689 | return -EINVAL; |
f078f209 LR |
690 | } |
691 | ||
3a702e49 BC |
692 | regdmn = ath_regd_get_eepromRD(reg); |
693 | reg->country_code = ath_regd_get_default_country(regdmn); | |
f078f209 | 694 | |
c02cf373 | 695 | if (reg->country_code == CTRY_DEFAULT && |
e03e5ffd LR |
696 | regdmn == CTRY_DEFAULT) { |
697 | printk(KERN_DEBUG "ath: EEPROM indicates default " | |
698 | "country code should be used\n"); | |
c02cf373 | 699 | reg->country_code = CTRY_UNITED_STATES; |
e03e5ffd | 700 | } |
f078f209 | 701 | |
c02cf373 | 702 | if (reg->country_code == CTRY_DEFAULT) { |
f078f209 LR |
703 | country = NULL; |
704 | } else { | |
e03e5ffd LR |
705 | printk(KERN_DEBUG "ath: doing EEPROM country->regdmn " |
706 | "map search\n"); | |
3a702e49 | 707 | country = ath_regd_find_country(reg->country_code); |
f078f209 | 708 | if (country == NULL) { |
c02cf373 | 709 | printk(KERN_DEBUG |
e03e5ffd LR |
710 | "ath: no valid country maps found for " |
711 | "country code: 0x%0x\n", | |
c02cf373 | 712 | reg->country_code); |
5f8e077c | 713 | return -EINVAL; |
e03e5ffd | 714 | } else { |
f078f209 | 715 | regdmn = country->regDmnEnum; |
e03e5ffd LR |
716 | printk(KERN_DEBUG "ath: country maps to " |
717 | "regdmn code: 0x%0x\n", | |
718 | regdmn); | |
719 | } | |
f078f209 LR |
720 | } |
721 | ||
3a702e49 | 722 | reg->regpair = ath_get_regpair(regdmn); |
f078f209 | 723 | |
c02cf373 | 724 | if (!reg->regpair) { |
3a702e49 | 725 | printk(KERN_DEBUG "ath: " |
5f8e077c LR |
726 | "No regulatory domain pair found, cannot continue\n"); |
727 | return -EINVAL; | |
f078f209 | 728 | } |
f078f209 | 729 | |
5f8e077c | 730 | if (!country) |
3a702e49 | 731 | country = ath_regd_find_country_by_rd(regdmn); |
f078f209 | 732 | |
5f8e077c | 733 | if (country) { |
c02cf373 BC |
734 | reg->alpha2[0] = country->isoName[0]; |
735 | reg->alpha2[1] = country->isoName[1]; | |
f078f209 | 736 | } else { |
c02cf373 BC |
737 | reg->alpha2[0] = '0'; |
738 | reg->alpha2[1] = '0'; | |
f078f209 LR |
739 | } |
740 | ||
3a702e49 | 741 | printk(KERN_DEBUG "ath: Country alpha2 being used: %c%c\n", |
c02cf373 | 742 | reg->alpha2[0], reg->alpha2[1]); |
e03e5ffd | 743 | printk(KERN_DEBUG "ath: Regpair used: 0x%0x\n", |
c02cf373 | 744 | reg->regpair->regDmnEnum); |
f078f209 | 745 | |
43fcb430 LR |
746 | return 0; |
747 | } | |
748 | ||
749 | int | |
750 | ath_regd_init(struct ath_regulatory *reg, | |
751 | struct wiphy *wiphy, | |
0c0280bd LR |
752 | void (*reg_notifier)(struct wiphy *wiphy, |
753 | struct regulatory_request *request)) | |
43fcb430 | 754 | { |
de1c732b LR |
755 | struct ath_common *common = container_of(reg, struct ath_common, |
756 | regulatory); | |
43fcb430 LR |
757 | int r; |
758 | ||
759 | r = __ath_regd_init(reg); | |
760 | if (r) | |
761 | return r; | |
762 | ||
de1c732b LR |
763 | if (ath_is_world_regd(reg)) |
764 | memcpy(&common->reg_world_copy, reg, | |
765 | sizeof(struct ath_regulatory)); | |
766 | ||
e3bb249b | 767 | ath_regd_init_wiphy(reg, wiphy, reg_notifier); |
43fcb430 | 768 | |
5f8e077c | 769 | return 0; |
f078f209 | 770 | } |
3a702e49 | 771 | EXPORT_SYMBOL(ath_regd_init); |
f078f209 | 772 | |
3a702e49 BC |
773 | u32 ath_regd_get_band_ctl(struct ath_regulatory *reg, |
774 | enum ieee80211_band band) | |
f078f209 | 775 | { |
c02cf373 BC |
776 | if (!reg->regpair || |
777 | (reg->country_code == CTRY_DEFAULT && | |
3a702e49 | 778 | is_wwr_sku(ath_regd_get_eepromRD(reg)))) { |
fc2ada30 BC |
779 | return SD_NO_CTL; |
780 | } | |
781 | ||
782 | switch (band) { | |
783 | case IEEE80211_BAND_2GHZ: | |
c02cf373 | 784 | return reg->regpair->reg_2ghz_ctl; |
fc2ada30 | 785 | case IEEE80211_BAND_5GHZ: |
c02cf373 | 786 | return reg->regpair->reg_5ghz_ctl; |
fc2ada30 BC |
787 | default: |
788 | return NO_CTL; | |
f078f209 | 789 | } |
fc2ada30 | 790 | } |
3a702e49 | 791 | EXPORT_SYMBOL(ath_regd_get_band_ctl); |