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 | ||
07782d94 LR |
222 | static void |
223 | __ath_reg_apply_beaconing_flags(struct wiphy *wiphy, | |
224 | enum nl80211_reg_initiator initiator, | |
225 | struct ieee80211_channel *ch) | |
226 | { | |
227 | if (ath_is_radar_freq(ch->center_freq) || | |
228 | (ch->flags & IEEE80211_CHAN_RADAR)) | |
229 | return; | |
230 | ||
231 | switch (initiator) { | |
232 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: | |
233 | ath_force_clear_no_ir_chan(wiphy, ch); | |
234 | break; | |
235 | default: | |
236 | if (ch->beacon_found) | |
237 | ch->flags &= ~IEEE80211_CHAN_NO_IR; | |
238 | } | |
239 | } | |
240 | ||
7519a8f0 | 241 | /* |
6c3af588 | 242 | * These exception rules do not apply radar frequencies. |
84540869 | 243 | * |
6c3af588 | 244 | * - We enable initiating radiation if the country IE says its fine: |
84540869 | 245 | * - If no country IE has been processed and a we determine we have |
6c3af588 | 246 | * received a beacon on a channel we can enable initiating radiation. |
7519a8f0 | 247 | */ |
6b2b2ffb LR |
248 | static void |
249 | ath_reg_apply_beaconing_flags(struct wiphy *wiphy, | |
250 | enum nl80211_reg_initiator initiator) | |
f078f209 | 251 | { |
84540869 | 252 | enum ieee80211_band band; |
5f8e077c | 253 | struct ieee80211_supported_band *sband; |
5f8e077c LR |
254 | struct ieee80211_channel *ch; |
255 | unsigned int i; | |
5f8e077c | 256 | |
84540869 | 257 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
84540869 | 258 | if (!wiphy->bands[band]) |
5f8e077c | 259 | continue; |
84540869 | 260 | sband = wiphy->bands[band]; |
84540869 | 261 | for (i = 0; i < sband->n_channels; i++) { |
84540869 | 262 | ch = &sband->channels[i]; |
07782d94 | 263 | __ath_reg_apply_beaconing_flags(wiphy, initiator, ch); |
84540869 | 264 | |
84540869 | 265 | } |
5f8e077c | 266 | } |
f078f209 LR |
267 | } |
268 | ||
bc0aa069 | 269 | /** |
f33cbc4f | 270 | * ath_reg_apply_ir_flags() |
bc0aa069 LR |
271 | * @wiphy: the wiphy to use |
272 | * @initiator: the regulatory hint initiator | |
273 | * | |
274 | * If no country IE has been received always enable passive scan | |
275 | * and no-ibss on these channels. This is only done for specific | |
276 | * regulatory SKUs. | |
277 | * | |
278 | * If a country IE has been received check its rule for this | |
279 | * channel first before enabling active scan. The passive scan | |
280 | * would have been enforced by the initial processing of our | |
281 | * custom regulatory domain. | |
282 | */ | |
6b2b2ffb | 283 | static void |
f33cbc4f | 284 | ath_reg_apply_ir_flags(struct wiphy *wiphy, |
6b2b2ffb | 285 | enum nl80211_reg_initiator initiator) |
f078f209 | 286 | { |
5f8e077c | 287 | struct ieee80211_supported_band *sband; |
5f8e077c | 288 | |
5f8e077c | 289 | sband = wiphy->bands[IEEE80211_BAND_2GHZ]; |
a59be081 HS |
290 | if (!sband) |
291 | return; | |
5f8e077c | 292 | |
bc0aa069 LR |
293 | switch(initiator) { |
294 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: | |
295 | ath_force_clear_no_ir_freq(wiphy, 2467); | |
296 | ath_force_clear_no_ir_freq(wiphy, 2472); | |
297 | break; | |
298 | default: | |
299 | ath_force_no_ir_freq(wiphy, 2467); | |
300 | ath_force_no_ir_freq(wiphy, 2472); | |
f078f209 | 301 | } |
f078f209 LR |
302 | } |
303 | ||
5f8e077c | 304 | /* Always apply Radar/DFS rules on freq range 5260 MHz - 5700 MHz */ |
e3bb249b | 305 | static void ath_reg_apply_radar_flags(struct wiphy *wiphy) |
f078f209 | 306 | { |
5f8e077c LR |
307 | struct ieee80211_supported_band *sband; |
308 | struct ieee80211_channel *ch; | |
309 | unsigned int i; | |
f078f209 | 310 | |
5f8e077c LR |
311 | if (!wiphy->bands[IEEE80211_BAND_5GHZ]) |
312 | return; | |
f078f209 | 313 | |
5f8e077c | 314 | sband = wiphy->bands[IEEE80211_BAND_5GHZ]; |
f078f209 | 315 | |
5f8e077c LR |
316 | for (i = 0; i < sband->n_channels; i++) { |
317 | ch = &sband->channels[i]; | |
3a702e49 | 318 | if (!ath_is_radar_freq(ch->center_freq)) |
5f8e077c LR |
319 | continue; |
320 | /* We always enable radar detection/DFS on this | |
321 | * frequency range. Additionally we also apply on | |
322 | * this frequency range: | |
323 | * - If STA mode does not yet have DFS supports disable | |
324 | * active scanning | |
325 | * - If adhoc mode does not support DFS yet then | |
326 | * disable adhoc in the frequency. | |
327 | * - If AP mode does not yet support radar detection/DFS | |
328 | * do not allow AP mode | |
329 | */ | |
330 | if (!(ch->flags & IEEE80211_CHAN_DISABLED)) | |
331 | ch->flags |= IEEE80211_CHAN_RADAR | | |
8fe02e16 | 332 | IEEE80211_CHAN_NO_IR; |
5f8e077c LR |
333 | } |
334 | } | |
f078f209 | 335 | |
e3bb249b | 336 | static void ath_reg_apply_world_flags(struct wiphy *wiphy, |
6b2b2ffb LR |
337 | enum nl80211_reg_initiator initiator, |
338 | struct ath_regulatory *reg) | |
5f8e077c | 339 | { |
c02cf373 | 340 | switch (reg->regpair->regDmnEnum) { |
5f8e077c LR |
341 | case 0x60: |
342 | case 0x63: | |
343 | case 0x66: | |
344 | case 0x67: | |
2290a9c3 | 345 | case 0x6C: |
3a702e49 | 346 | ath_reg_apply_beaconing_flags(wiphy, initiator); |
5f8e077c LR |
347 | break; |
348 | case 0x68: | |
3a702e49 | 349 | ath_reg_apply_beaconing_flags(wiphy, initiator); |
f33cbc4f | 350 | ath_reg_apply_ir_flags(wiphy, initiator); |
5f8e077c LR |
351 | break; |
352 | } | |
5f8e077c | 353 | } |
f078f209 | 354 | |
de1c732b LR |
355 | static u16 ath_regd_find_country_by_name(char *alpha2) |
356 | { | |
357 | unsigned int i; | |
358 | ||
359 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) { | |
360 | if (!memcmp(allCountries[i].isoName, alpha2, 2)) | |
361 | return allCountries[i].countryCode; | |
362 | } | |
363 | ||
364 | return -1; | |
365 | } | |
366 | ||
8a3b6c80 LR |
367 | static int __ath_reg_dyn_country(struct wiphy *wiphy, |
368 | struct ath_regulatory *reg, | |
369 | struct regulatory_request *request) | |
370 | { | |
371 | u16 country_code; | |
372 | ||
3e850edd LR |
373 | if (request->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && |
374 | !ath_is_world_regd(reg)) | |
8a3b6c80 LR |
375 | return -EINVAL; |
376 | ||
377 | country_code = ath_regd_find_country_by_name(request->alpha2); | |
378 | if (country_code == (u16) -1) | |
379 | return -EINVAL; | |
380 | ||
381 | reg->current_rd = COUNTRY_ERD_FLAG; | |
382 | reg->current_rd |= country_code; | |
383 | ||
384 | __ath_regd_init(reg); | |
385 | ||
386 | ath_reg_apply_world_flags(wiphy, request->initiator, reg); | |
387 | ||
388 | return 0; | |
389 | } | |
390 | ||
391 | static void ath_reg_dyn_country(struct wiphy *wiphy, | |
392 | struct ath_regulatory *reg, | |
393 | struct regulatory_request *request) | |
394 | { | |
395 | if (__ath_reg_dyn_country(wiphy, reg, request)) | |
396 | return; | |
397 | ||
398 | printk(KERN_DEBUG "ath: regdomain 0x%0x " | |
399 | "dynamically updated by %s\n", | |
400 | reg->current_rd, | |
401 | reg_initiator_name(request->initiator)); | |
402 | } | |
403 | ||
94e7876d LR |
404 | static bool dynamic_country_user_possible(struct ath_regulatory *reg) |
405 | { | |
406 | if (config_enabled(CONFIG_ATH_REG_DYNAMIC_USER_CERT_TESTING)) | |
407 | return true; | |
408 | ||
409 | switch (reg->country_code) { | |
410 | case CTRY_UNITED_STATES: | |
411 | case CTRY_JAPAN1: | |
412 | case CTRY_JAPAN2: | |
413 | case CTRY_JAPAN3: | |
414 | case CTRY_JAPAN4: | |
415 | case CTRY_JAPAN5: | |
416 | case CTRY_JAPAN6: | |
417 | case CTRY_JAPAN7: | |
418 | case CTRY_JAPAN8: | |
419 | case CTRY_JAPAN9: | |
420 | case CTRY_JAPAN10: | |
421 | case CTRY_JAPAN11: | |
422 | case CTRY_JAPAN12: | |
423 | case CTRY_JAPAN13: | |
424 | case CTRY_JAPAN14: | |
425 | case CTRY_JAPAN15: | |
426 | case CTRY_JAPAN16: | |
427 | case CTRY_JAPAN17: | |
428 | case CTRY_JAPAN18: | |
429 | case CTRY_JAPAN19: | |
430 | case CTRY_JAPAN20: | |
431 | case CTRY_JAPAN21: | |
432 | case CTRY_JAPAN22: | |
433 | case CTRY_JAPAN23: | |
434 | case CTRY_JAPAN24: | |
435 | case CTRY_JAPAN25: | |
436 | case CTRY_JAPAN26: | |
437 | case CTRY_JAPAN27: | |
438 | case CTRY_JAPAN28: | |
439 | case CTRY_JAPAN29: | |
440 | case CTRY_JAPAN30: | |
441 | case CTRY_JAPAN31: | |
442 | case CTRY_JAPAN32: | |
443 | case CTRY_JAPAN33: | |
444 | case CTRY_JAPAN34: | |
445 | case CTRY_JAPAN35: | |
446 | case CTRY_JAPAN36: | |
447 | case CTRY_JAPAN37: | |
448 | case CTRY_JAPAN38: | |
449 | case CTRY_JAPAN39: | |
450 | case CTRY_JAPAN40: | |
451 | case CTRY_JAPAN41: | |
452 | case CTRY_JAPAN42: | |
453 | case CTRY_JAPAN43: | |
454 | case CTRY_JAPAN44: | |
455 | case CTRY_JAPAN45: | |
456 | case CTRY_JAPAN46: | |
457 | case CTRY_JAPAN47: | |
458 | case CTRY_JAPAN48: | |
459 | case CTRY_JAPAN49: | |
460 | case CTRY_JAPAN50: | |
461 | case CTRY_JAPAN51: | |
462 | case CTRY_JAPAN52: | |
463 | case CTRY_JAPAN53: | |
464 | case CTRY_JAPAN54: | |
465 | case CTRY_JAPAN55: | |
466 | case CTRY_JAPAN56: | |
467 | case CTRY_JAPAN57: | |
468 | case CTRY_JAPAN58: | |
469 | case CTRY_JAPAN59: | |
470 | return false; | |
471 | } | |
472 | ||
473 | return true; | |
474 | } | |
475 | ||
476 | static void ath_reg_dyn_country_user(struct wiphy *wiphy, | |
477 | struct ath_regulatory *reg, | |
478 | struct regulatory_request *request) | |
479 | { | |
480 | if (!config_enabled(CONFIG_ATH_REG_DYNAMIC_USER_REG_HINTS)) | |
481 | return; | |
482 | if (!dynamic_country_user_possible(reg)) | |
483 | return; | |
484 | ath_reg_dyn_country(wiphy, reg, request); | |
485 | } | |
486 | ||
0c0280bd LR |
487 | void ath_reg_notifier_apply(struct wiphy *wiphy, |
488 | struct regulatory_request *request, | |
489 | struct ath_regulatory *reg) | |
5f8e077c | 490 | { |
de1c732b LR |
491 | struct ath_common *common = container_of(reg, struct ath_common, |
492 | regulatory); | |
5f8e077c | 493 | /* We always apply this */ |
3a702e49 | 494 | ath_reg_apply_radar_flags(wiphy); |
f078f209 | 495 | |
931299cf LR |
496 | /* |
497 | * This would happen when we have sent a custom regulatory request | |
498 | * a world regulatory domain and the scheduler hasn't yet processed | |
499 | * any pending requests in the queue. | |
500 | */ | |
501 | if (!request) | |
0c0280bd | 502 | return; |
931299cf | 503 | |
5f8e077c | 504 | switch (request->initiator) { |
7db90f4a | 505 | case NL80211_REGDOM_SET_BY_CORE: |
de1c732b LR |
506 | /* |
507 | * If common->reg_world_copy is world roaming it means we *were* | |
508 | * world roaming... so we now have to restore that data. | |
509 | */ | |
510 | if (!ath_is_world_regd(&common->reg_world_copy)) | |
511 | break; | |
512 | ||
513 | memcpy(reg, &common->reg_world_copy, | |
514 | sizeof(struct ath_regulatory)); | |
515 | break; | |
516 | case NL80211_REGDOM_SET_BY_DRIVER: | |
4da225bb | 517 | break; |
7db90f4a | 518 | case NL80211_REGDOM_SET_BY_USER: |
94e7876d | 519 | ath_reg_dyn_country_user(wiphy, reg, request); |
5f8e077c | 520 | break; |
7db90f4a | 521 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
8a3b6c80 | 522 | ath_reg_dyn_country(wiphy, reg, request); |
5f8e077c LR |
523 | break; |
524 | } | |
f078f209 | 525 | } |
3a702e49 | 526 | EXPORT_SYMBOL(ath_reg_notifier_apply); |
f078f209 | 527 | |
e3bb249b | 528 | static bool ath_regd_is_eeprom_valid(struct ath_regulatory *reg) |
c02cf373 | 529 | { |
cfcfe446 | 530 | u16 rd = ath_regd_get_eepromRD(reg); |
5f8e077c | 531 | int i; |
f078f209 | 532 | |
5f8e077c LR |
533 | if (rd & COUNTRY_ERD_FLAG) { |
534 | /* EEPROM value is a country code */ | |
535 | u16 cc = rd & ~COUNTRY_ERD_FLAG; | |
e03e5ffd LR |
536 | printk(KERN_DEBUG |
537 | "ath: EEPROM indicates we should expect " | |
538 | "a country code\n"); | |
5f8e077c LR |
539 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) |
540 | if (allCountries[i].countryCode == cc) | |
541 | return true; | |
542 | } else { | |
543 | /* EEPROM value is a regpair value */ | |
e03e5ffd LR |
544 | if (rd != CTRY_DEFAULT) |
545 | printk(KERN_DEBUG "ath: EEPROM indicates we " | |
546 | "should expect a direct regpair map\n"); | |
5f8e077c LR |
547 | for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) |
548 | if (regDomainPairs[i].regDmnEnum == rd) | |
549 | return true; | |
f078f209 | 550 | } |
c02cf373 | 551 | printk(KERN_DEBUG |
3a702e49 | 552 | "ath: invalid regulatory domain/country code 0x%x\n", rd); |
f078f209 LR |
553 | return false; |
554 | } | |
555 | ||
5f8e077c | 556 | /* EEPROM country code to regpair mapping */ |
f078f209 | 557 | static struct country_code_to_enum_rd* |
3a702e49 | 558 | ath_regd_find_country(u16 countryCode) |
f078f209 LR |
559 | { |
560 | int i; | |
561 | ||
562 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) { | |
563 | if (allCountries[i].countryCode == countryCode) | |
564 | return &allCountries[i]; | |
565 | } | |
566 | return NULL; | |
567 | } | |
568 | ||
5f8e077c LR |
569 | /* EEPROM rd code to regpair mapping */ |
570 | static struct country_code_to_enum_rd* | |
3a702e49 | 571 | ath_regd_find_country_by_rd(int regdmn) |
5f8e077c LR |
572 | { |
573 | int i; | |
574 | ||
575 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) { | |
576 | if (allCountries[i].regDmnEnum == regdmn) | |
577 | return &allCountries[i]; | |
578 | } | |
579 | return NULL; | |
580 | } | |
581 | ||
582 | /* Returns the map of the EEPROM set RD to a country code */ | |
3a702e49 | 583 | static u16 ath_regd_get_default_country(u16 rd) |
f078f209 | 584 | { |
f078f209 LR |
585 | if (rd & COUNTRY_ERD_FLAG) { |
586 | struct country_code_to_enum_rd *country = NULL; | |
587 | u16 cc = rd & ~COUNTRY_ERD_FLAG; | |
588 | ||
3a702e49 | 589 | country = ath_regd_find_country(cc); |
f078f209 LR |
590 | if (country != NULL) |
591 | return cc; | |
592 | } | |
593 | ||
f078f209 LR |
594 | return CTRY_DEFAULT; |
595 | } | |
596 | ||
5f8e077c | 597 | static struct reg_dmn_pair_mapping* |
3a702e49 | 598 | ath_get_regpair(int regdmn) |
f078f209 LR |
599 | { |
600 | int i; | |
601 | ||
5f8e077c LR |
602 | if (regdmn == NO_ENUMRD) |
603 | return NULL; | |
f078f209 | 604 | for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) { |
5f8e077c LR |
605 | if (regDomainPairs[i].regDmnEnum == regdmn) |
606 | return ®DomainPairs[i]; | |
f078f209 | 607 | } |
5f8e077c | 608 | return NULL; |
f078f209 LR |
609 | } |
610 | ||
6b2b2ffb LR |
611 | static int |
612 | ath_regd_init_wiphy(struct ath_regulatory *reg, | |
613 | struct wiphy *wiphy, | |
0c0280bd LR |
614 | void (*reg_notifier)(struct wiphy *wiphy, |
615 | struct regulatory_request *request)) | |
e3bb249b BC |
616 | { |
617 | const struct ieee80211_regdomain *regd; | |
618 | ||
619 | wiphy->reg_notifier = reg_notifier; | |
a2f73b6c | 620 | wiphy->regulatory_flags |= REGULATORY_STRICT_REG; |
e3bb249b BC |
621 | |
622 | if (ath_is_world_regd(reg)) { | |
623 | /* | |
624 | * Anything applied here (prior to wiphy registration) gets | |
625 | * saved on the wiphy orig_* parameters | |
626 | */ | |
627 | regd = ath_world_regdomain(reg); | |
a09a85a0 LR |
628 | wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | |
629 | REGULATORY_COUNTRY_IE_FOLLOW_POWER; | |
e3bb249b BC |
630 | } else { |
631 | /* | |
25985edc | 632 | * This gets applied in the case of the absence of CRDA, |
e3bb249b BC |
633 | * it's our own custom world regulatory domain, similar to |
634 | * cfg80211's but we enable passive scanning. | |
635 | */ | |
636 | regd = ath_default_world_regdomain(); | |
637 | } | |
638 | wiphy_apply_custom_regulatory(wiphy, regd); | |
639 | ath_reg_apply_radar_flags(wiphy); | |
640 | ath_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER, reg); | |
641 | return 0; | |
642 | } | |
643 | ||
5d2214ac LR |
644 | /* |
645 | * Some users have reported their EEPROM programmed with | |
646 | * 0x8000 set, this is not a supported regulatory domain | |
647 | * but since we have more than one user with it we need | |
648 | * a solution for them. We default to 0x64, which is the | |
649 | * default Atheros world regulatory domain. | |
650 | */ | |
651 | static void ath_regd_sanitize(struct ath_regulatory *reg) | |
652 | { | |
653 | if (reg->current_rd != COUNTRY_ERD_FLAG) | |
654 | return; | |
655 | printk(KERN_DEBUG "ath: EEPROM regdomain sanitized\n"); | |
656 | reg->current_rd = 0x64; | |
657 | } | |
658 | ||
43fcb430 | 659 | static int __ath_regd_init(struct ath_regulatory *reg) |
f078f209 | 660 | { |
f078f209 | 661 | struct country_code_to_enum_rd *country = NULL; |
e775aaf0 | 662 | u16 regdmn; |
f078f209 | 663 | |
e03e5ffd LR |
664 | if (!reg) |
665 | return -EINVAL; | |
666 | ||
5d2214ac LR |
667 | ath_regd_sanitize(reg); |
668 | ||
e03e5ffd LR |
669 | printk(KERN_DEBUG "ath: EEPROM regdomain: 0x%0x\n", reg->current_rd); |
670 | ||
3a702e49 | 671 | if (!ath_regd_is_eeprom_valid(reg)) { |
516304b0 | 672 | pr_err("Invalid EEPROM contents\n"); |
5f8e077c | 673 | return -EINVAL; |
f078f209 LR |
674 | } |
675 | ||
3a702e49 BC |
676 | regdmn = ath_regd_get_eepromRD(reg); |
677 | reg->country_code = ath_regd_get_default_country(regdmn); | |
f078f209 | 678 | |
c02cf373 | 679 | if (reg->country_code == CTRY_DEFAULT && |
e03e5ffd LR |
680 | regdmn == CTRY_DEFAULT) { |
681 | printk(KERN_DEBUG "ath: EEPROM indicates default " | |
682 | "country code should be used\n"); | |
c02cf373 | 683 | reg->country_code = CTRY_UNITED_STATES; |
e03e5ffd | 684 | } |
f078f209 | 685 | |
c02cf373 | 686 | if (reg->country_code == CTRY_DEFAULT) { |
f078f209 LR |
687 | country = NULL; |
688 | } else { | |
e03e5ffd LR |
689 | printk(KERN_DEBUG "ath: doing EEPROM country->regdmn " |
690 | "map search\n"); | |
3a702e49 | 691 | country = ath_regd_find_country(reg->country_code); |
f078f209 | 692 | if (country == NULL) { |
c02cf373 | 693 | printk(KERN_DEBUG |
e03e5ffd LR |
694 | "ath: no valid country maps found for " |
695 | "country code: 0x%0x\n", | |
c02cf373 | 696 | reg->country_code); |
5f8e077c | 697 | return -EINVAL; |
e03e5ffd | 698 | } else { |
f078f209 | 699 | regdmn = country->regDmnEnum; |
e03e5ffd LR |
700 | printk(KERN_DEBUG "ath: country maps to " |
701 | "regdmn code: 0x%0x\n", | |
702 | regdmn); | |
703 | } | |
f078f209 LR |
704 | } |
705 | ||
3a702e49 | 706 | reg->regpair = ath_get_regpair(regdmn); |
f078f209 | 707 | |
c02cf373 | 708 | if (!reg->regpair) { |
3a702e49 | 709 | printk(KERN_DEBUG "ath: " |
5f8e077c LR |
710 | "No regulatory domain pair found, cannot continue\n"); |
711 | return -EINVAL; | |
f078f209 | 712 | } |
f078f209 | 713 | |
5f8e077c | 714 | if (!country) |
3a702e49 | 715 | country = ath_regd_find_country_by_rd(regdmn); |
f078f209 | 716 | |
5f8e077c | 717 | if (country) { |
c02cf373 BC |
718 | reg->alpha2[0] = country->isoName[0]; |
719 | reg->alpha2[1] = country->isoName[1]; | |
f078f209 | 720 | } else { |
c02cf373 BC |
721 | reg->alpha2[0] = '0'; |
722 | reg->alpha2[1] = '0'; | |
f078f209 LR |
723 | } |
724 | ||
3a702e49 | 725 | printk(KERN_DEBUG "ath: Country alpha2 being used: %c%c\n", |
c02cf373 | 726 | reg->alpha2[0], reg->alpha2[1]); |
e03e5ffd | 727 | printk(KERN_DEBUG "ath: Regpair used: 0x%0x\n", |
c02cf373 | 728 | reg->regpair->regDmnEnum); |
f078f209 | 729 | |
43fcb430 LR |
730 | return 0; |
731 | } | |
732 | ||
733 | int | |
734 | ath_regd_init(struct ath_regulatory *reg, | |
735 | struct wiphy *wiphy, | |
0c0280bd LR |
736 | void (*reg_notifier)(struct wiphy *wiphy, |
737 | struct regulatory_request *request)) | |
43fcb430 | 738 | { |
de1c732b LR |
739 | struct ath_common *common = container_of(reg, struct ath_common, |
740 | regulatory); | |
43fcb430 LR |
741 | int r; |
742 | ||
743 | r = __ath_regd_init(reg); | |
744 | if (r) | |
745 | return r; | |
746 | ||
de1c732b LR |
747 | if (ath_is_world_regd(reg)) |
748 | memcpy(&common->reg_world_copy, reg, | |
749 | sizeof(struct ath_regulatory)); | |
750 | ||
e3bb249b | 751 | ath_regd_init_wiphy(reg, wiphy, reg_notifier); |
43fcb430 | 752 | |
5f8e077c | 753 | return 0; |
f078f209 | 754 | } |
3a702e49 | 755 | EXPORT_SYMBOL(ath_regd_init); |
f078f209 | 756 | |
3a702e49 BC |
757 | u32 ath_regd_get_band_ctl(struct ath_regulatory *reg, |
758 | enum ieee80211_band band) | |
f078f209 | 759 | { |
c02cf373 BC |
760 | if (!reg->regpair || |
761 | (reg->country_code == CTRY_DEFAULT && | |
3a702e49 | 762 | is_wwr_sku(ath_regd_get_eepromRD(reg)))) { |
fc2ada30 BC |
763 | return SD_NO_CTL; |
764 | } | |
765 | ||
766 | switch (band) { | |
767 | case IEEE80211_BAND_2GHZ: | |
c02cf373 | 768 | return reg->regpair->reg_2ghz_ctl; |
fc2ada30 | 769 | case IEEE80211_BAND_5GHZ: |
c02cf373 | 770 | return reg->regpair->reg_5ghz_ctl; |
fc2ada30 BC |
771 | default: |
772 | return NO_CTL; | |
f078f209 | 773 | } |
fc2ada30 | 774 | } |
3a702e49 | 775 | EXPORT_SYMBOL(ath_regd_get_band_ctl); |