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 | |
d0f48f9d BC |
117 | static inline bool is_wwr_sku(u16 regd) |
118 | { | |
641eabb0 CL |
119 | return ((regd & COUNTRY_ERD_FLAG) != COUNTRY_ERD_FLAG) && |
120 | (((regd & WORLD_SKU_MASK) == WORLD_SKU_PREFIX) || | |
121 | (regd == WORLD)); | |
d0f48f9d BC |
122 | } |
123 | ||
3a702e49 | 124 | static u16 ath_regd_get_eepromRD(struct ath_regulatory *reg) |
f078f209 | 125 | { |
c02cf373 | 126 | return reg->current_rd & ~WORLDWIDE_ROAMING_FLAG; |
f078f209 LR |
127 | } |
128 | ||
3a702e49 | 129 | bool ath_is_world_regd(struct ath_regulatory *reg) |
5f8e077c | 130 | { |
3a702e49 | 131 | return is_wwr_sku(ath_regd_get_eepromRD(reg)); |
f078f209 | 132 | } |
3a702e49 | 133 | EXPORT_SYMBOL(ath_is_world_regd); |
f078f209 | 134 | |
e3bb249b | 135 | static const struct ieee80211_regdomain *ath_default_world_regdomain(void) |
f078f209 | 136 | { |
5f8e077c | 137 | /* this is the most restrictive */ |
3a702e49 | 138 | return &ath_world_regdom_64; |
5f8e077c | 139 | } |
f078f209 | 140 | |
e3bb249b | 141 | static const struct |
3a702e49 | 142 | ieee80211_regdomain *ath_world_regdomain(struct ath_regulatory *reg) |
5f8e077c | 143 | { |
c02cf373 | 144 | switch (reg->regpair->regDmnEnum) { |
5f8e077c LR |
145 | case 0x60: |
146 | case 0x61: | |
147 | case 0x62: | |
3a702e49 | 148 | return &ath_world_regdom_60_61_62; |
5f8e077c LR |
149 | case 0x63: |
150 | case 0x65: | |
3a702e49 | 151 | return &ath_world_regdom_63_65; |
5f8e077c | 152 | case 0x64: |
3a702e49 | 153 | return &ath_world_regdom_64; |
5f8e077c LR |
154 | case 0x66: |
155 | case 0x69: | |
3a702e49 | 156 | return &ath_world_regdom_66_69; |
5f8e077c LR |
157 | case 0x67: |
158 | case 0x68: | |
159 | case 0x6A: | |
34a0a202 SB |
160 | case 0x6C: |
161 | return &ath_world_regdom_67_68_6A_6C; | |
5f8e077c LR |
162 | default: |
163 | WARN_ON(1); | |
3a702e49 | 164 | return ath_default_world_regdomain(); |
f078f209 | 165 | } |
f078f209 LR |
166 | } |
167 | ||
5719efdd BR |
168 | bool ath_is_49ghz_allowed(u16 regdomain) |
169 | { | |
170 | /* possibly more */ | |
171 | return regdomain == MKK9_MKKC; | |
172 | } | |
173 | EXPORT_SYMBOL(ath_is_49ghz_allowed); | |
174 | ||
547e4c2e | 175 | /* Frequency is one where radar detection is required */ |
3a702e49 | 176 | static bool ath_is_radar_freq(u16 center_freq) |
547e4c2e LR |
177 | { |
178 | return (center_freq >= 5260 && center_freq <= 5700); | |
179 | } | |
180 | ||
bc0aa069 LR |
181 | static void ath_force_clear_no_ir_chan(struct wiphy *wiphy, |
182 | struct ieee80211_channel *ch) | |
183 | { | |
184 | const struct ieee80211_reg_rule *reg_rule; | |
185 | ||
186 | reg_rule = freq_reg_info(wiphy, ch->center_freq); | |
187 | if (IS_ERR(reg_rule)) | |
188 | return; | |
189 | ||
190 | if (!(reg_rule->flags & NL80211_RRF_NO_IR)) | |
191 | if (ch->flags & IEEE80211_CHAN_NO_IR) | |
192 | ch->flags &= ~IEEE80211_CHAN_NO_IR; | |
193 | } | |
194 | ||
195 | static void ath_force_clear_no_ir_freq(struct wiphy *wiphy, u16 center_freq) | |
196 | { | |
197 | struct ieee80211_channel *ch; | |
198 | ||
199 | ch = ieee80211_get_channel(wiphy, center_freq); | |
200 | if (!ch) | |
201 | return; | |
202 | ||
203 | ath_force_clear_no_ir_chan(wiphy, ch); | |
204 | } | |
205 | ||
206 | static void ath_force_no_ir_chan(struct ieee80211_channel *ch) | |
207 | { | |
208 | ch->flags |= IEEE80211_CHAN_NO_IR; | |
209 | } | |
210 | ||
211 | static void ath_force_no_ir_freq(struct wiphy *wiphy, u16 center_freq) | |
212 | { | |
213 | struct ieee80211_channel *ch; | |
214 | ||
215 | ch = ieee80211_get_channel(wiphy, center_freq); | |
216 | if (!ch) | |
217 | return; | |
218 | ||
219 | ath_force_no_ir_chan(ch); | |
220 | } | |
221 | ||
7519a8f0 | 222 | /* |
6c3af588 | 223 | * These exception rules do not apply radar frequencies. |
84540869 | 224 | * |
6c3af588 | 225 | * - We enable initiating radiation if the country IE says its fine: |
84540869 | 226 | * - If no country IE has been processed and a we determine we have |
6c3af588 | 227 | * received a beacon on a channel we can enable initiating radiation. |
7519a8f0 | 228 | */ |
6b2b2ffb LR |
229 | static void |
230 | ath_reg_apply_beaconing_flags(struct wiphy *wiphy, | |
231 | enum nl80211_reg_initiator initiator) | |
f078f209 | 232 | { |
84540869 | 233 | enum ieee80211_band band; |
5f8e077c | 234 | struct ieee80211_supported_band *sband; |
5f8e077c LR |
235 | struct ieee80211_channel *ch; |
236 | unsigned int i; | |
5f8e077c | 237 | |
84540869 | 238 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
f078f209 | 239 | |
84540869 | 240 | if (!wiphy->bands[band]) |
5f8e077c | 241 | continue; |
84540869 LR |
242 | |
243 | sband = wiphy->bands[band]; | |
244 | ||
245 | for (i = 0; i < sband->n_channels; i++) { | |
246 | ||
247 | ch = &sband->channels[i]; | |
248 | ||
3a702e49 | 249 | if (ath_is_radar_freq(ch->center_freq) || |
84540869 LR |
250 | (ch->flags & IEEE80211_CHAN_RADAR)) |
251 | continue; | |
252 | ||
6c3af588 LR |
253 | /* |
254 | * If the country IE says initiating radiation | |
255 | * is OK we trust that. | |
256 | */ | |
257 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) | |
258 | ath_force_clear_no_ir_chan(wiphy, ch); | |
259 | else { | |
84540869 | 260 | if (ch->beacon_found) |
8fe02e16 | 261 | ch->flags &= ~IEEE80211_CHAN_NO_IR; |
84540869 LR |
262 | } |
263 | } | |
5f8e077c | 264 | } |
84540869 | 265 | |
f078f209 LR |
266 | } |
267 | ||
bc0aa069 | 268 | /** |
f33cbc4f | 269 | * ath_reg_apply_ir_flags() |
bc0aa069 LR |
270 | * @wiphy: the wiphy to use |
271 | * @initiator: the regulatory hint initiator | |
272 | * | |
273 | * If no country IE has been received always enable passive scan | |
274 | * and no-ibss on these channels. This is only done for specific | |
275 | * regulatory SKUs. | |
276 | * | |
277 | * If a country IE has been received check its rule for this | |
278 | * channel first before enabling active scan. The passive scan | |
279 | * would have been enforced by the initial processing of our | |
280 | * custom regulatory domain. | |
281 | */ | |
6b2b2ffb | 282 | static void |
f33cbc4f | 283 | ath_reg_apply_ir_flags(struct wiphy *wiphy, |
6b2b2ffb | 284 | enum nl80211_reg_initiator initiator) |
f078f209 | 285 | { |
5f8e077c | 286 | struct ieee80211_supported_band *sband; |
5f8e077c | 287 | |
5f8e077c | 288 | sband = wiphy->bands[IEEE80211_BAND_2GHZ]; |
a59be081 HS |
289 | if (!sband) |
290 | return; | |
5f8e077c | 291 | |
bc0aa069 LR |
292 | switch(initiator) { |
293 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: | |
294 | ath_force_clear_no_ir_freq(wiphy, 2467); | |
295 | ath_force_clear_no_ir_freq(wiphy, 2472); | |
296 | break; | |
297 | default: | |
298 | ath_force_no_ir_freq(wiphy, 2467); | |
299 | ath_force_no_ir_freq(wiphy, 2472); | |
f078f209 | 300 | } |
f078f209 LR |
301 | } |
302 | ||
5f8e077c | 303 | /* Always apply Radar/DFS rules on freq range 5260 MHz - 5700 MHz */ |
e3bb249b | 304 | static void ath_reg_apply_radar_flags(struct wiphy *wiphy) |
f078f209 | 305 | { |
5f8e077c LR |
306 | struct ieee80211_supported_band *sband; |
307 | struct ieee80211_channel *ch; | |
308 | unsigned int i; | |
f078f209 | 309 | |
5f8e077c LR |
310 | if (!wiphy->bands[IEEE80211_BAND_5GHZ]) |
311 | return; | |
f078f209 | 312 | |
5f8e077c | 313 | sband = wiphy->bands[IEEE80211_BAND_5GHZ]; |
f078f209 | 314 | |
5f8e077c LR |
315 | for (i = 0; i < sband->n_channels; i++) { |
316 | ch = &sband->channels[i]; | |
3a702e49 | 317 | if (!ath_is_radar_freq(ch->center_freq)) |
5f8e077c LR |
318 | continue; |
319 | /* We always enable radar detection/DFS on this | |
320 | * frequency range. Additionally we also apply on | |
321 | * this frequency range: | |
322 | * - If STA mode does not yet have DFS supports disable | |
323 | * active scanning | |
324 | * - If adhoc mode does not support DFS yet then | |
325 | * disable adhoc in the frequency. | |
326 | * - If AP mode does not yet support radar detection/DFS | |
327 | * do not allow AP mode | |
328 | */ | |
329 | if (!(ch->flags & IEEE80211_CHAN_DISABLED)) | |
330 | ch->flags |= IEEE80211_CHAN_RADAR | | |
8fe02e16 | 331 | IEEE80211_CHAN_NO_IR; |
5f8e077c LR |
332 | } |
333 | } | |
f078f209 | 334 | |
e3bb249b | 335 | static void ath_reg_apply_world_flags(struct wiphy *wiphy, |
6b2b2ffb LR |
336 | enum nl80211_reg_initiator initiator, |
337 | struct ath_regulatory *reg) | |
5f8e077c | 338 | { |
c02cf373 | 339 | switch (reg->regpair->regDmnEnum) { |
5f8e077c LR |
340 | case 0x60: |
341 | case 0x63: | |
342 | case 0x66: | |
343 | case 0x67: | |
2290a9c3 | 344 | case 0x6C: |
3a702e49 | 345 | ath_reg_apply_beaconing_flags(wiphy, initiator); |
5f8e077c LR |
346 | break; |
347 | case 0x68: | |
3a702e49 | 348 | ath_reg_apply_beaconing_flags(wiphy, initiator); |
f33cbc4f | 349 | ath_reg_apply_ir_flags(wiphy, initiator); |
5f8e077c LR |
350 | break; |
351 | } | |
5f8e077c | 352 | } |
f078f209 | 353 | |
de1c732b LR |
354 | static u16 ath_regd_find_country_by_name(char *alpha2) |
355 | { | |
356 | unsigned int i; | |
357 | ||
358 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) { | |
359 | if (!memcmp(allCountries[i].isoName, alpha2, 2)) | |
360 | return allCountries[i].countryCode; | |
361 | } | |
362 | ||
363 | return -1; | |
364 | } | |
365 | ||
8a3b6c80 LR |
366 | static int __ath_reg_dyn_country(struct wiphy *wiphy, |
367 | struct ath_regulatory *reg, | |
368 | struct regulatory_request *request) | |
369 | { | |
370 | u16 country_code; | |
371 | ||
3e850edd LR |
372 | if (request->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && |
373 | !ath_is_world_regd(reg)) | |
8a3b6c80 LR |
374 | return -EINVAL; |
375 | ||
376 | country_code = ath_regd_find_country_by_name(request->alpha2); | |
377 | if (country_code == (u16) -1) | |
378 | return -EINVAL; | |
379 | ||
380 | reg->current_rd = COUNTRY_ERD_FLAG; | |
381 | reg->current_rd |= country_code; | |
382 | ||
383 | __ath_regd_init(reg); | |
384 | ||
385 | ath_reg_apply_world_flags(wiphy, request->initiator, reg); | |
386 | ||
387 | return 0; | |
388 | } | |
389 | ||
390 | static void ath_reg_dyn_country(struct wiphy *wiphy, | |
391 | struct ath_regulatory *reg, | |
392 | struct regulatory_request *request) | |
393 | { | |
394 | if (__ath_reg_dyn_country(wiphy, reg, request)) | |
395 | return; | |
396 | ||
397 | printk(KERN_DEBUG "ath: regdomain 0x%0x " | |
398 | "dynamically updated by %s\n", | |
399 | reg->current_rd, | |
400 | reg_initiator_name(request->initiator)); | |
401 | } | |
402 | ||
94e7876d LR |
403 | static bool dynamic_country_user_possible(struct ath_regulatory *reg) |
404 | { | |
405 | if (config_enabled(CONFIG_ATH_REG_DYNAMIC_USER_CERT_TESTING)) | |
406 | return true; | |
407 | ||
408 | switch (reg->country_code) { | |
409 | case CTRY_UNITED_STATES: | |
410 | case CTRY_JAPAN1: | |
411 | case CTRY_JAPAN2: | |
412 | case CTRY_JAPAN3: | |
413 | case CTRY_JAPAN4: | |
414 | case CTRY_JAPAN5: | |
415 | case CTRY_JAPAN6: | |
416 | case CTRY_JAPAN7: | |
417 | case CTRY_JAPAN8: | |
418 | case CTRY_JAPAN9: | |
419 | case CTRY_JAPAN10: | |
420 | case CTRY_JAPAN11: | |
421 | case CTRY_JAPAN12: | |
422 | case CTRY_JAPAN13: | |
423 | case CTRY_JAPAN14: | |
424 | case CTRY_JAPAN15: | |
425 | case CTRY_JAPAN16: | |
426 | case CTRY_JAPAN17: | |
427 | case CTRY_JAPAN18: | |
428 | case CTRY_JAPAN19: | |
429 | case CTRY_JAPAN20: | |
430 | case CTRY_JAPAN21: | |
431 | case CTRY_JAPAN22: | |
432 | case CTRY_JAPAN23: | |
433 | case CTRY_JAPAN24: | |
434 | case CTRY_JAPAN25: | |
435 | case CTRY_JAPAN26: | |
436 | case CTRY_JAPAN27: | |
437 | case CTRY_JAPAN28: | |
438 | case CTRY_JAPAN29: | |
439 | case CTRY_JAPAN30: | |
440 | case CTRY_JAPAN31: | |
441 | case CTRY_JAPAN32: | |
442 | case CTRY_JAPAN33: | |
443 | case CTRY_JAPAN34: | |
444 | case CTRY_JAPAN35: | |
445 | case CTRY_JAPAN36: | |
446 | case CTRY_JAPAN37: | |
447 | case CTRY_JAPAN38: | |
448 | case CTRY_JAPAN39: | |
449 | case CTRY_JAPAN40: | |
450 | case CTRY_JAPAN41: | |
451 | case CTRY_JAPAN42: | |
452 | case CTRY_JAPAN43: | |
453 | case CTRY_JAPAN44: | |
454 | case CTRY_JAPAN45: | |
455 | case CTRY_JAPAN46: | |
456 | case CTRY_JAPAN47: | |
457 | case CTRY_JAPAN48: | |
458 | case CTRY_JAPAN49: | |
459 | case CTRY_JAPAN50: | |
460 | case CTRY_JAPAN51: | |
461 | case CTRY_JAPAN52: | |
462 | case CTRY_JAPAN53: | |
463 | case CTRY_JAPAN54: | |
464 | case CTRY_JAPAN55: | |
465 | case CTRY_JAPAN56: | |
466 | case CTRY_JAPAN57: | |
467 | case CTRY_JAPAN58: | |
468 | case CTRY_JAPAN59: | |
469 | return false; | |
470 | } | |
471 | ||
472 | return true; | |
473 | } | |
474 | ||
475 | static void ath_reg_dyn_country_user(struct wiphy *wiphy, | |
476 | struct ath_regulatory *reg, | |
477 | struct regulatory_request *request) | |
478 | { | |
479 | if (!config_enabled(CONFIG_ATH_REG_DYNAMIC_USER_REG_HINTS)) | |
480 | return; | |
481 | if (!dynamic_country_user_possible(reg)) | |
482 | return; | |
483 | ath_reg_dyn_country(wiphy, reg, request); | |
484 | } | |
485 | ||
0c0280bd LR |
486 | void ath_reg_notifier_apply(struct wiphy *wiphy, |
487 | struct regulatory_request *request, | |
488 | struct ath_regulatory *reg) | |
5f8e077c | 489 | { |
de1c732b LR |
490 | struct ath_common *common = container_of(reg, struct ath_common, |
491 | regulatory); | |
5f8e077c | 492 | /* We always apply this */ |
3a702e49 | 493 | ath_reg_apply_radar_flags(wiphy); |
f078f209 | 494 | |
931299cf LR |
495 | /* |
496 | * This would happen when we have sent a custom regulatory request | |
497 | * a world regulatory domain and the scheduler hasn't yet processed | |
498 | * any pending requests in the queue. | |
499 | */ | |
500 | if (!request) | |
0c0280bd | 501 | return; |
931299cf | 502 | |
5f8e077c | 503 | switch (request->initiator) { |
7db90f4a | 504 | case NL80211_REGDOM_SET_BY_CORE: |
de1c732b LR |
505 | /* |
506 | * If common->reg_world_copy is world roaming it means we *were* | |
507 | * world roaming... so we now have to restore that data. | |
508 | */ | |
509 | if (!ath_is_world_regd(&common->reg_world_copy)) | |
510 | break; | |
511 | ||
512 | memcpy(reg, &common->reg_world_copy, | |
513 | sizeof(struct ath_regulatory)); | |
514 | break; | |
515 | case NL80211_REGDOM_SET_BY_DRIVER: | |
4da225bb | 516 | break; |
7db90f4a | 517 | case NL80211_REGDOM_SET_BY_USER: |
94e7876d | 518 | ath_reg_dyn_country_user(wiphy, reg, request); |
5f8e077c | 519 | break; |
7db90f4a | 520 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
8a3b6c80 | 521 | ath_reg_dyn_country(wiphy, reg, request); |
5f8e077c LR |
522 | break; |
523 | } | |
f078f209 | 524 | } |
3a702e49 | 525 | EXPORT_SYMBOL(ath_reg_notifier_apply); |
f078f209 | 526 | |
e3bb249b | 527 | static bool ath_regd_is_eeprom_valid(struct ath_regulatory *reg) |
c02cf373 | 528 | { |
cfcfe446 | 529 | u16 rd = ath_regd_get_eepromRD(reg); |
5f8e077c | 530 | int i; |
f078f209 | 531 | |
5f8e077c LR |
532 | if (rd & COUNTRY_ERD_FLAG) { |
533 | /* EEPROM value is a country code */ | |
534 | u16 cc = rd & ~COUNTRY_ERD_FLAG; | |
e03e5ffd LR |
535 | printk(KERN_DEBUG |
536 | "ath: EEPROM indicates we should expect " | |
537 | "a country code\n"); | |
5f8e077c LR |
538 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) |
539 | if (allCountries[i].countryCode == cc) | |
540 | return true; | |
541 | } else { | |
542 | /* EEPROM value is a regpair value */ | |
e03e5ffd LR |
543 | if (rd != CTRY_DEFAULT) |
544 | printk(KERN_DEBUG "ath: EEPROM indicates we " | |
545 | "should expect a direct regpair map\n"); | |
5f8e077c LR |
546 | for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) |
547 | if (regDomainPairs[i].regDmnEnum == rd) | |
548 | return true; | |
f078f209 | 549 | } |
c02cf373 | 550 | printk(KERN_DEBUG |
3a702e49 | 551 | "ath: invalid regulatory domain/country code 0x%x\n", rd); |
f078f209 LR |
552 | return false; |
553 | } | |
554 | ||
5f8e077c | 555 | /* EEPROM country code to regpair mapping */ |
f078f209 | 556 | static struct country_code_to_enum_rd* |
3a702e49 | 557 | ath_regd_find_country(u16 countryCode) |
f078f209 LR |
558 | { |
559 | int i; | |
560 | ||
561 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) { | |
562 | if (allCountries[i].countryCode == countryCode) | |
563 | return &allCountries[i]; | |
564 | } | |
565 | return NULL; | |
566 | } | |
567 | ||
5f8e077c LR |
568 | /* EEPROM rd code to regpair mapping */ |
569 | static struct country_code_to_enum_rd* | |
3a702e49 | 570 | ath_regd_find_country_by_rd(int regdmn) |
5f8e077c LR |
571 | { |
572 | int i; | |
573 | ||
574 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) { | |
575 | if (allCountries[i].regDmnEnum == regdmn) | |
576 | return &allCountries[i]; | |
577 | } | |
578 | return NULL; | |
579 | } | |
580 | ||
581 | /* Returns the map of the EEPROM set RD to a country code */ | |
3a702e49 | 582 | static u16 ath_regd_get_default_country(u16 rd) |
f078f209 | 583 | { |
f078f209 LR |
584 | if (rd & COUNTRY_ERD_FLAG) { |
585 | struct country_code_to_enum_rd *country = NULL; | |
586 | u16 cc = rd & ~COUNTRY_ERD_FLAG; | |
587 | ||
3a702e49 | 588 | country = ath_regd_find_country(cc); |
f078f209 LR |
589 | if (country != NULL) |
590 | return cc; | |
591 | } | |
592 | ||
f078f209 LR |
593 | return CTRY_DEFAULT; |
594 | } | |
595 | ||
5f8e077c | 596 | static struct reg_dmn_pair_mapping* |
3a702e49 | 597 | ath_get_regpair(int regdmn) |
f078f209 LR |
598 | { |
599 | int i; | |
600 | ||
5f8e077c LR |
601 | if (regdmn == NO_ENUMRD) |
602 | return NULL; | |
f078f209 | 603 | for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) { |
5f8e077c LR |
604 | if (regDomainPairs[i].regDmnEnum == regdmn) |
605 | return ®DomainPairs[i]; | |
f078f209 | 606 | } |
5f8e077c | 607 | return NULL; |
f078f209 LR |
608 | } |
609 | ||
6b2b2ffb LR |
610 | static int |
611 | ath_regd_init_wiphy(struct ath_regulatory *reg, | |
612 | struct wiphy *wiphy, | |
0c0280bd LR |
613 | void (*reg_notifier)(struct wiphy *wiphy, |
614 | struct regulatory_request *request)) | |
e3bb249b BC |
615 | { |
616 | const struct ieee80211_regdomain *regd; | |
617 | ||
618 | wiphy->reg_notifier = reg_notifier; | |
a2f73b6c | 619 | wiphy->regulatory_flags |= REGULATORY_STRICT_REG; |
e3bb249b BC |
620 | |
621 | if (ath_is_world_regd(reg)) { | |
622 | /* | |
623 | * Anything applied here (prior to wiphy registration) gets | |
624 | * saved on the wiphy orig_* parameters | |
625 | */ | |
626 | regd = ath_world_regdomain(reg); | |
a09a85a0 LR |
627 | wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | |
628 | REGULATORY_COUNTRY_IE_FOLLOW_POWER; | |
e3bb249b BC |
629 | } else { |
630 | /* | |
25985edc | 631 | * This gets applied in the case of the absence of CRDA, |
e3bb249b BC |
632 | * it's our own custom world regulatory domain, similar to |
633 | * cfg80211's but we enable passive scanning. | |
634 | */ | |
635 | regd = ath_default_world_regdomain(); | |
636 | } | |
637 | wiphy_apply_custom_regulatory(wiphy, regd); | |
638 | ath_reg_apply_radar_flags(wiphy); | |
639 | ath_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER, reg); | |
640 | return 0; | |
641 | } | |
642 | ||
5d2214ac LR |
643 | /* |
644 | * Some users have reported their EEPROM programmed with | |
645 | * 0x8000 set, this is not a supported regulatory domain | |
646 | * but since we have more than one user with it we need | |
647 | * a solution for them. We default to 0x64, which is the | |
648 | * default Atheros world regulatory domain. | |
649 | */ | |
650 | static void ath_regd_sanitize(struct ath_regulatory *reg) | |
651 | { | |
652 | if (reg->current_rd != COUNTRY_ERD_FLAG) | |
653 | return; | |
654 | printk(KERN_DEBUG "ath: EEPROM regdomain sanitized\n"); | |
655 | reg->current_rd = 0x64; | |
656 | } | |
657 | ||
43fcb430 | 658 | static int __ath_regd_init(struct ath_regulatory *reg) |
f078f209 | 659 | { |
f078f209 | 660 | struct country_code_to_enum_rd *country = NULL; |
e775aaf0 | 661 | u16 regdmn; |
f078f209 | 662 | |
e03e5ffd LR |
663 | if (!reg) |
664 | return -EINVAL; | |
665 | ||
5d2214ac LR |
666 | ath_regd_sanitize(reg); |
667 | ||
e03e5ffd LR |
668 | printk(KERN_DEBUG "ath: EEPROM regdomain: 0x%0x\n", reg->current_rd); |
669 | ||
3a702e49 | 670 | if (!ath_regd_is_eeprom_valid(reg)) { |
516304b0 | 671 | pr_err("Invalid EEPROM contents\n"); |
5f8e077c | 672 | return -EINVAL; |
f078f209 LR |
673 | } |
674 | ||
3a702e49 BC |
675 | regdmn = ath_regd_get_eepromRD(reg); |
676 | reg->country_code = ath_regd_get_default_country(regdmn); | |
f078f209 | 677 | |
c02cf373 | 678 | if (reg->country_code == CTRY_DEFAULT && |
e03e5ffd LR |
679 | regdmn == CTRY_DEFAULT) { |
680 | printk(KERN_DEBUG "ath: EEPROM indicates default " | |
681 | "country code should be used\n"); | |
c02cf373 | 682 | reg->country_code = CTRY_UNITED_STATES; |
e03e5ffd | 683 | } |
f078f209 | 684 | |
c02cf373 | 685 | if (reg->country_code == CTRY_DEFAULT) { |
f078f209 LR |
686 | country = NULL; |
687 | } else { | |
e03e5ffd LR |
688 | printk(KERN_DEBUG "ath: doing EEPROM country->regdmn " |
689 | "map search\n"); | |
3a702e49 | 690 | country = ath_regd_find_country(reg->country_code); |
f078f209 | 691 | if (country == NULL) { |
c02cf373 | 692 | printk(KERN_DEBUG |
e03e5ffd LR |
693 | "ath: no valid country maps found for " |
694 | "country code: 0x%0x\n", | |
c02cf373 | 695 | reg->country_code); |
5f8e077c | 696 | return -EINVAL; |
e03e5ffd | 697 | } else { |
f078f209 | 698 | regdmn = country->regDmnEnum; |
e03e5ffd LR |
699 | printk(KERN_DEBUG "ath: country maps to " |
700 | "regdmn code: 0x%0x\n", | |
701 | regdmn); | |
702 | } | |
f078f209 LR |
703 | } |
704 | ||
3a702e49 | 705 | reg->regpair = ath_get_regpair(regdmn); |
f078f209 | 706 | |
c02cf373 | 707 | if (!reg->regpair) { |
3a702e49 | 708 | printk(KERN_DEBUG "ath: " |
5f8e077c LR |
709 | "No regulatory domain pair found, cannot continue\n"); |
710 | return -EINVAL; | |
f078f209 | 711 | } |
f078f209 | 712 | |
5f8e077c | 713 | if (!country) |
3a702e49 | 714 | country = ath_regd_find_country_by_rd(regdmn); |
f078f209 | 715 | |
5f8e077c | 716 | if (country) { |
c02cf373 BC |
717 | reg->alpha2[0] = country->isoName[0]; |
718 | reg->alpha2[1] = country->isoName[1]; | |
f078f209 | 719 | } else { |
c02cf373 BC |
720 | reg->alpha2[0] = '0'; |
721 | reg->alpha2[1] = '0'; | |
f078f209 LR |
722 | } |
723 | ||
3a702e49 | 724 | printk(KERN_DEBUG "ath: Country alpha2 being used: %c%c\n", |
c02cf373 | 725 | reg->alpha2[0], reg->alpha2[1]); |
e03e5ffd | 726 | printk(KERN_DEBUG "ath: Regpair used: 0x%0x\n", |
c02cf373 | 727 | reg->regpair->regDmnEnum); |
f078f209 | 728 | |
43fcb430 LR |
729 | return 0; |
730 | } | |
731 | ||
732 | int | |
733 | ath_regd_init(struct ath_regulatory *reg, | |
734 | struct wiphy *wiphy, | |
0c0280bd LR |
735 | void (*reg_notifier)(struct wiphy *wiphy, |
736 | struct regulatory_request *request)) | |
43fcb430 | 737 | { |
de1c732b LR |
738 | struct ath_common *common = container_of(reg, struct ath_common, |
739 | regulatory); | |
43fcb430 LR |
740 | int r; |
741 | ||
742 | r = __ath_regd_init(reg); | |
743 | if (r) | |
744 | return r; | |
745 | ||
de1c732b LR |
746 | if (ath_is_world_regd(reg)) |
747 | memcpy(&common->reg_world_copy, reg, | |
748 | sizeof(struct ath_regulatory)); | |
749 | ||
e3bb249b | 750 | ath_regd_init_wiphy(reg, wiphy, reg_notifier); |
43fcb430 | 751 | |
5f8e077c | 752 | return 0; |
f078f209 | 753 | } |
3a702e49 | 754 | EXPORT_SYMBOL(ath_regd_init); |
f078f209 | 755 | |
3a702e49 BC |
756 | u32 ath_regd_get_band_ctl(struct ath_regulatory *reg, |
757 | enum ieee80211_band band) | |
f078f209 | 758 | { |
c02cf373 BC |
759 | if (!reg->regpair || |
760 | (reg->country_code == CTRY_DEFAULT && | |
3a702e49 | 761 | is_wwr_sku(ath_regd_get_eepromRD(reg)))) { |
fc2ada30 BC |
762 | return SD_NO_CTL; |
763 | } | |
764 | ||
765 | switch (band) { | |
766 | case IEEE80211_BAND_2GHZ: | |
c02cf373 | 767 | return reg->regpair->reg_2ghz_ctl; |
fc2ada30 | 768 | case IEEE80211_BAND_5GHZ: |
c02cf373 | 769 | return reg->regpair->reg_5ghz_ctl; |
fc2ada30 BC |
770 | default: |
771 | return NO_CTL; | |
f078f209 | 772 | } |
fc2ada30 | 773 | } |
3a702e49 | 774 | EXPORT_SYMBOL(ath_regd_get_band_ctl); |