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 | ||
17 | #include <linux/kernel.h> | |
ee40fa06 | 18 | #include <linux/export.h> |
3a702e49 BC |
19 | #include <net/cfg80211.h> |
20 | #include <net/mac80211.h> | |
3a702e49 | 21 | #include "regd.h" |
f078f209 LR |
22 | #include "regd_common.h" |
23 | ||
de1c732b LR |
24 | static int __ath_regd_init(struct ath_regulatory *reg); |
25 | ||
5f8e077c LR |
26 | /* |
27 | * This is a set of common rules used by our world regulatory domains. | |
28 | * We have 12 world regulatory domains. To save space we consolidate | |
29 | * the regulatory domains in 5 structures by frequency and change | |
30 | * the flags on our reg_notifier() on a case by case basis. | |
31 | */ | |
f078f209 | 32 | |
5f8e077c LR |
33 | /* Only these channels all allow active scan on all world regulatory domains */ |
34 | #define ATH9K_2GHZ_CH01_11 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0) | |
35 | ||
36 | /* We enable active scan on these a case by case basis by regulatory domain */ | |
37 | #define ATH9K_2GHZ_CH12_13 REG_RULE(2467-10, 2472+10, 40, 0, 20,\ | |
38 | NL80211_RRF_PASSIVE_SCAN) | |
39 | #define ATH9K_2GHZ_CH14 REG_RULE(2484-10, 2484+10, 40, 0, 20,\ | |
40 | NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_OFDM) | |
41 | ||
42 | /* We allow IBSS on these on a case by case basis by regulatory domain */ | |
43 | #define ATH9K_5GHZ_5150_5350 REG_RULE(5150-10, 5350+10, 40, 0, 30,\ | |
44 | NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS) | |
45 | #define ATH9K_5GHZ_5470_5850 REG_RULE(5470-10, 5850+10, 40, 0, 30,\ | |
46 | NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS) | |
47 | #define ATH9K_5GHZ_5725_5850 REG_RULE(5725-10, 5850+10, 40, 0, 30,\ | |
48 | NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS) | |
49 | ||
50 | #define ATH9K_2GHZ_ALL ATH9K_2GHZ_CH01_11, \ | |
51 | ATH9K_2GHZ_CH12_13, \ | |
52 | ATH9K_2GHZ_CH14 | |
53 | ||
54 | #define ATH9K_5GHZ_ALL ATH9K_5GHZ_5150_5350, \ | |
55 | ATH9K_5GHZ_5470_5850 | |
cfcfe446 | 56 | |
5f8e077c LR |
57 | /* This one skips what we call "mid band" */ |
58 | #define ATH9K_5GHZ_NO_MIDBAND ATH9K_5GHZ_5150_5350, \ | |
59 | ATH9K_5GHZ_5725_5850 | |
60 | ||
61 | /* Can be used for: | |
62 | * 0x60, 0x61, 0x62 */ | |
3a702e49 | 63 | static const struct ieee80211_regdomain ath_world_regdom_60_61_62 = { |
5f8e077c LR |
64 | .n_reg_rules = 5, |
65 | .alpha2 = "99", | |
66 | .reg_rules = { | |
67 | ATH9K_2GHZ_ALL, | |
68 | ATH9K_5GHZ_ALL, | |
69 | } | |
70 | }; | |
71 | ||
72 | /* Can be used by 0x63 and 0x65 */ | |
3a702e49 | 73 | static const struct ieee80211_regdomain ath_world_regdom_63_65 = { |
5f8e077c LR |
74 | .n_reg_rules = 4, |
75 | .alpha2 = "99", | |
76 | .reg_rules = { | |
77 | ATH9K_2GHZ_CH01_11, | |
78 | ATH9K_2GHZ_CH12_13, | |
79 | ATH9K_5GHZ_NO_MIDBAND, | |
80 | } | |
81 | }; | |
82 | ||
83 | /* Can be used by 0x64 only */ | |
3a702e49 | 84 | static const struct ieee80211_regdomain ath_world_regdom_64 = { |
5f8e077c LR |
85 | .n_reg_rules = 3, |
86 | .alpha2 = "99", | |
87 | .reg_rules = { | |
88 | ATH9K_2GHZ_CH01_11, | |
89 | ATH9K_5GHZ_NO_MIDBAND, | |
90 | } | |
91 | }; | |
92 | ||
93 | /* Can be used by 0x66 and 0x69 */ | |
3a702e49 | 94 | static const struct ieee80211_regdomain ath_world_regdom_66_69 = { |
5f8e077c LR |
95 | .n_reg_rules = 3, |
96 | .alpha2 = "99", | |
97 | .reg_rules = { | |
98 | ATH9K_2GHZ_CH01_11, | |
99 | ATH9K_5GHZ_ALL, | |
100 | } | |
101 | }; | |
102 | ||
34a0a202 SB |
103 | /* Can be used by 0x67, 0x68, 0x6A and 0x6C */ |
104 | static const struct ieee80211_regdomain ath_world_regdom_67_68_6A_6C = { | |
5f8e077c LR |
105 | .n_reg_rules = 4, |
106 | .alpha2 = "99", | |
107 | .reg_rules = { | |
108 | ATH9K_2GHZ_CH01_11, | |
109 | ATH9K_2GHZ_CH12_13, | |
110 | ATH9K_5GHZ_ALL, | |
111 | } | |
112 | }; | |
f078f209 | 113 | |
d0f48f9d BC |
114 | static inline bool is_wwr_sku(u16 regd) |
115 | { | |
641eabb0 CL |
116 | return ((regd & COUNTRY_ERD_FLAG) != COUNTRY_ERD_FLAG) && |
117 | (((regd & WORLD_SKU_MASK) == WORLD_SKU_PREFIX) || | |
118 | (regd == WORLD)); | |
d0f48f9d BC |
119 | } |
120 | ||
3a702e49 | 121 | static u16 ath_regd_get_eepromRD(struct ath_regulatory *reg) |
f078f209 | 122 | { |
c02cf373 | 123 | return reg->current_rd & ~WORLDWIDE_ROAMING_FLAG; |
f078f209 LR |
124 | } |
125 | ||
3a702e49 | 126 | bool ath_is_world_regd(struct ath_regulatory *reg) |
5f8e077c | 127 | { |
3a702e49 | 128 | return is_wwr_sku(ath_regd_get_eepromRD(reg)); |
f078f209 | 129 | } |
3a702e49 | 130 | EXPORT_SYMBOL(ath_is_world_regd); |
f078f209 | 131 | |
e3bb249b | 132 | static const struct ieee80211_regdomain *ath_default_world_regdomain(void) |
f078f209 | 133 | { |
5f8e077c | 134 | /* this is the most restrictive */ |
3a702e49 | 135 | return &ath_world_regdom_64; |
5f8e077c | 136 | } |
f078f209 | 137 | |
e3bb249b | 138 | static const struct |
3a702e49 | 139 | ieee80211_regdomain *ath_world_regdomain(struct ath_regulatory *reg) |
5f8e077c | 140 | { |
c02cf373 | 141 | switch (reg->regpair->regDmnEnum) { |
5f8e077c LR |
142 | case 0x60: |
143 | case 0x61: | |
144 | case 0x62: | |
3a702e49 | 145 | return &ath_world_regdom_60_61_62; |
5f8e077c LR |
146 | case 0x63: |
147 | case 0x65: | |
3a702e49 | 148 | return &ath_world_regdom_63_65; |
5f8e077c | 149 | case 0x64: |
3a702e49 | 150 | return &ath_world_regdom_64; |
5f8e077c LR |
151 | case 0x66: |
152 | case 0x69: | |
3a702e49 | 153 | return &ath_world_regdom_66_69; |
5f8e077c LR |
154 | case 0x67: |
155 | case 0x68: | |
156 | case 0x6A: | |
34a0a202 SB |
157 | case 0x6C: |
158 | return &ath_world_regdom_67_68_6A_6C; | |
5f8e077c LR |
159 | default: |
160 | WARN_ON(1); | |
3a702e49 | 161 | return ath_default_world_regdomain(); |
f078f209 | 162 | } |
f078f209 LR |
163 | } |
164 | ||
5719efdd BR |
165 | bool ath_is_49ghz_allowed(u16 regdomain) |
166 | { | |
167 | /* possibly more */ | |
168 | return regdomain == MKK9_MKKC; | |
169 | } | |
170 | EXPORT_SYMBOL(ath_is_49ghz_allowed); | |
171 | ||
547e4c2e | 172 | /* Frequency is one where radar detection is required */ |
3a702e49 | 173 | static bool ath_is_radar_freq(u16 center_freq) |
547e4c2e LR |
174 | { |
175 | return (center_freq >= 5260 && center_freq <= 5700); | |
176 | } | |
177 | ||
7519a8f0 | 178 | /* |
84540869 LR |
179 | * N.B: These exception rules do not apply radar freqs. |
180 | * | |
181 | * - We enable adhoc (or beaconing) if allowed by 11d | |
182 | * - We enable active scan if the channel is allowed by 11d | |
183 | * - If no country IE has been processed and a we determine we have | |
184 | * received a beacon on a channel we can enable active scan and | |
185 | * adhoc (or beaconing). | |
7519a8f0 | 186 | */ |
6b2b2ffb LR |
187 | static void |
188 | ath_reg_apply_beaconing_flags(struct wiphy *wiphy, | |
189 | enum nl80211_reg_initiator initiator) | |
f078f209 | 190 | { |
84540869 | 191 | enum ieee80211_band band; |
5f8e077c LR |
192 | struct ieee80211_supported_band *sband; |
193 | const struct ieee80211_reg_rule *reg_rule; | |
194 | struct ieee80211_channel *ch; | |
195 | unsigned int i; | |
196 | u32 bandwidth = 0; | |
197 | int r; | |
198 | ||
84540869 | 199 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
f078f209 | 200 | |
84540869 | 201 | if (!wiphy->bands[band]) |
5f8e077c | 202 | continue; |
84540869 LR |
203 | |
204 | sband = wiphy->bands[band]; | |
205 | ||
206 | for (i = 0; i < sband->n_channels; i++) { | |
207 | ||
208 | ch = &sband->channels[i]; | |
209 | ||
3a702e49 | 210 | if (ath_is_radar_freq(ch->center_freq) || |
84540869 LR |
211 | (ch->flags & IEEE80211_CHAN_RADAR)) |
212 | continue; | |
213 | ||
7db90f4a | 214 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) { |
038659e7 LR |
215 | r = freq_reg_info(wiphy, |
216 | ch->center_freq, | |
217 | bandwidth, | |
218 | ®_rule); | |
84540869 LR |
219 | if (r) |
220 | continue; | |
221 | /* | |
222 | * If 11d had a rule for this channel ensure | |
223 | * we enable adhoc/beaconing if it allows us to | |
224 | * use it. Note that we would have disabled it | |
225 | * by applying our static world regdomain by | |
226 | * default during init, prior to calling our | |
227 | * regulatory_hint(). | |
228 | */ | |
229 | if (!(reg_rule->flags & | |
230 | NL80211_RRF_NO_IBSS)) | |
231 | ch->flags &= | |
232 | ~IEEE80211_CHAN_NO_IBSS; | |
233 | if (!(reg_rule->flags & | |
234 | NL80211_RRF_PASSIVE_SCAN)) | |
235 | ch->flags &= | |
236 | ~IEEE80211_CHAN_PASSIVE_SCAN; | |
237 | } else { | |
238 | if (ch->beacon_found) | |
239 | ch->flags &= ~(IEEE80211_CHAN_NO_IBSS | | |
240 | IEEE80211_CHAN_PASSIVE_SCAN); | |
241 | } | |
242 | } | |
5f8e077c | 243 | } |
84540869 | 244 | |
f078f209 LR |
245 | } |
246 | ||
5f8e077c | 247 | /* Allows active scan scan on Ch 12 and 13 */ |
6b2b2ffb LR |
248 | static void |
249 | ath_reg_apply_active_scan_flags(struct wiphy *wiphy, | |
250 | enum nl80211_reg_initiator initiator) | |
f078f209 | 251 | { |
5f8e077c LR |
252 | struct ieee80211_supported_band *sband; |
253 | struct ieee80211_channel *ch; | |
254 | const struct ieee80211_reg_rule *reg_rule; | |
255 | u32 bandwidth = 0; | |
256 | int r; | |
257 | ||
5f8e077c | 258 | sband = wiphy->bands[IEEE80211_BAND_2GHZ]; |
a59be081 HS |
259 | if (!sband) |
260 | return; | |
5f8e077c | 261 | |
84540869 LR |
262 | /* |
263 | * If no country IE has been received always enable active scan | |
264 | * on these channels. This is only done for specific regulatory SKUs | |
265 | */ | |
7db90f4a | 266 | if (initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) { |
5f8e077c LR |
267 | ch = &sband->channels[11]; /* CH 12 */ |
268 | if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
269 | ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; | |
270 | ch = &sband->channels[12]; /* CH 13 */ | |
271 | if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
272 | ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; | |
273 | return; | |
274 | } | |
f078f209 | 275 | |
84540869 | 276 | /* |
25985edc | 277 | * If a country IE has been received check its rule for this |
5f8e077c | 278 | * channel first before enabling active scan. The passive scan |
84540869 LR |
279 | * would have been enforced by the initial processing of our |
280 | * custom regulatory domain. | |
281 | */ | |
f078f209 | 282 | |
5f8e077c | 283 | ch = &sband->channels[11]; /* CH 12 */ |
038659e7 | 284 | r = freq_reg_info(wiphy, ch->center_freq, bandwidth, ®_rule); |
5f8e077c LR |
285 | if (!r) { |
286 | if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN)) | |
287 | if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
288 | ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; | |
f078f209 LR |
289 | } |
290 | ||
5f8e077c | 291 | ch = &sband->channels[12]; /* CH 13 */ |
038659e7 | 292 | r = freq_reg_info(wiphy, ch->center_freq, bandwidth, ®_rule); |
5f8e077c LR |
293 | if (!r) { |
294 | if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN)) | |
295 | if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
296 | ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; | |
f078f209 | 297 | } |
f078f209 LR |
298 | } |
299 | ||
5f8e077c | 300 | /* Always apply Radar/DFS rules on freq range 5260 MHz - 5700 MHz */ |
e3bb249b | 301 | static void ath_reg_apply_radar_flags(struct wiphy *wiphy) |
f078f209 | 302 | { |
5f8e077c LR |
303 | struct ieee80211_supported_band *sband; |
304 | struct ieee80211_channel *ch; | |
305 | unsigned int i; | |
f078f209 | 306 | |
5f8e077c LR |
307 | if (!wiphy->bands[IEEE80211_BAND_5GHZ]) |
308 | return; | |
f078f209 | 309 | |
5f8e077c | 310 | sband = wiphy->bands[IEEE80211_BAND_5GHZ]; |
f078f209 | 311 | |
5f8e077c LR |
312 | for (i = 0; i < sband->n_channels; i++) { |
313 | ch = &sband->channels[i]; | |
3a702e49 | 314 | if (!ath_is_radar_freq(ch->center_freq)) |
5f8e077c LR |
315 | continue; |
316 | /* We always enable radar detection/DFS on this | |
317 | * frequency range. Additionally we also apply on | |
318 | * this frequency range: | |
319 | * - If STA mode does not yet have DFS supports disable | |
320 | * active scanning | |
321 | * - If adhoc mode does not support DFS yet then | |
322 | * disable adhoc in the frequency. | |
323 | * - If AP mode does not yet support radar detection/DFS | |
324 | * do not allow AP mode | |
325 | */ | |
326 | if (!(ch->flags & IEEE80211_CHAN_DISABLED)) | |
327 | ch->flags |= IEEE80211_CHAN_RADAR | | |
328 | IEEE80211_CHAN_NO_IBSS | | |
329 | IEEE80211_CHAN_PASSIVE_SCAN; | |
330 | } | |
331 | } | |
f078f209 | 332 | |
e3bb249b | 333 | static void ath_reg_apply_world_flags(struct wiphy *wiphy, |
6b2b2ffb LR |
334 | enum nl80211_reg_initiator initiator, |
335 | struct ath_regulatory *reg) | |
5f8e077c | 336 | { |
c02cf373 | 337 | switch (reg->regpair->regDmnEnum) { |
5f8e077c LR |
338 | case 0x60: |
339 | case 0x63: | |
340 | case 0x66: | |
341 | case 0x67: | |
2290a9c3 | 342 | case 0x6C: |
3a702e49 | 343 | ath_reg_apply_beaconing_flags(wiphy, initiator); |
5f8e077c LR |
344 | break; |
345 | case 0x68: | |
3a702e49 BC |
346 | ath_reg_apply_beaconing_flags(wiphy, initiator); |
347 | ath_reg_apply_active_scan_flags(wiphy, initiator); | |
5f8e077c LR |
348 | break; |
349 | } | |
5f8e077c | 350 | } |
f078f209 | 351 | |
de1c732b LR |
352 | static u16 ath_regd_find_country_by_name(char *alpha2) |
353 | { | |
354 | unsigned int i; | |
355 | ||
356 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) { | |
357 | if (!memcmp(allCountries[i].isoName, alpha2, 2)) | |
358 | return allCountries[i].countryCode; | |
359 | } | |
360 | ||
361 | return -1; | |
362 | } | |
363 | ||
3a702e49 | 364 | int ath_reg_notifier_apply(struct wiphy *wiphy, |
6b2b2ffb LR |
365 | struct regulatory_request *request, |
366 | struct ath_regulatory *reg) | |
5f8e077c | 367 | { |
de1c732b LR |
368 | struct ath_common *common = container_of(reg, struct ath_common, |
369 | regulatory); | |
370 | u16 country_code; | |
371 | ||
5f8e077c | 372 | /* We always apply this */ |
3a702e49 | 373 | ath_reg_apply_radar_flags(wiphy); |
f078f209 | 374 | |
931299cf LR |
375 | /* |
376 | * This would happen when we have sent a custom regulatory request | |
377 | * a world regulatory domain and the scheduler hasn't yet processed | |
378 | * any pending requests in the queue. | |
379 | */ | |
380 | if (!request) | |
381 | return 0; | |
382 | ||
5f8e077c | 383 | switch (request->initiator) { |
7db90f4a | 384 | case NL80211_REGDOM_SET_BY_CORE: |
de1c732b LR |
385 | /* |
386 | * If common->reg_world_copy is world roaming it means we *were* | |
387 | * world roaming... so we now have to restore that data. | |
388 | */ | |
389 | if (!ath_is_world_regd(&common->reg_world_copy)) | |
390 | break; | |
391 | ||
392 | memcpy(reg, &common->reg_world_copy, | |
393 | sizeof(struct ath_regulatory)); | |
394 | break; | |
395 | case NL80211_REGDOM_SET_BY_DRIVER: | |
7db90f4a | 396 | case NL80211_REGDOM_SET_BY_USER: |
5f8e077c | 397 | break; |
7db90f4a | 398 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
de1c732b LR |
399 | if (!ath_is_world_regd(reg)) |
400 | break; | |
401 | ||
402 | country_code = ath_regd_find_country_by_name(request->alpha2); | |
403 | if (country_code == (u16) -1) | |
404 | break; | |
405 | ||
406 | reg->current_rd = COUNTRY_ERD_FLAG; | |
407 | reg->current_rd |= country_code; | |
408 | ||
409 | printk(KERN_DEBUG "ath: regdomain 0x%0x updated by CountryIE\n", | |
410 | reg->current_rd); | |
411 | __ath_regd_init(reg); | |
412 | ||
413 | ath_reg_apply_world_flags(wiphy, request->initiator, reg); | |
414 | ||
5f8e077c LR |
415 | break; |
416 | } | |
f078f209 | 417 | |
5f8e077c | 418 | return 0; |
f078f209 | 419 | } |
3a702e49 | 420 | EXPORT_SYMBOL(ath_reg_notifier_apply); |
f078f209 | 421 | |
e3bb249b | 422 | static bool ath_regd_is_eeprom_valid(struct ath_regulatory *reg) |
c02cf373 | 423 | { |
cfcfe446 | 424 | u16 rd = ath_regd_get_eepromRD(reg); |
5f8e077c | 425 | int i; |
f078f209 | 426 | |
5f8e077c LR |
427 | if (rd & COUNTRY_ERD_FLAG) { |
428 | /* EEPROM value is a country code */ | |
429 | u16 cc = rd & ~COUNTRY_ERD_FLAG; | |
e03e5ffd LR |
430 | printk(KERN_DEBUG |
431 | "ath: EEPROM indicates we should expect " | |
432 | "a country code\n"); | |
5f8e077c LR |
433 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) |
434 | if (allCountries[i].countryCode == cc) | |
435 | return true; | |
436 | } else { | |
437 | /* EEPROM value is a regpair value */ | |
e03e5ffd LR |
438 | if (rd != CTRY_DEFAULT) |
439 | printk(KERN_DEBUG "ath: EEPROM indicates we " | |
440 | "should expect a direct regpair map\n"); | |
5f8e077c LR |
441 | for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) |
442 | if (regDomainPairs[i].regDmnEnum == rd) | |
443 | return true; | |
f078f209 | 444 | } |
c02cf373 | 445 | printk(KERN_DEBUG |
3a702e49 | 446 | "ath: invalid regulatory domain/country code 0x%x\n", rd); |
f078f209 LR |
447 | return false; |
448 | } | |
449 | ||
5f8e077c | 450 | /* EEPROM country code to regpair mapping */ |
f078f209 | 451 | static struct country_code_to_enum_rd* |
3a702e49 | 452 | ath_regd_find_country(u16 countryCode) |
f078f209 LR |
453 | { |
454 | int i; | |
455 | ||
456 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) { | |
457 | if (allCountries[i].countryCode == countryCode) | |
458 | return &allCountries[i]; | |
459 | } | |
460 | return NULL; | |
461 | } | |
462 | ||
5f8e077c LR |
463 | /* EEPROM rd code to regpair mapping */ |
464 | static struct country_code_to_enum_rd* | |
3a702e49 | 465 | ath_regd_find_country_by_rd(int regdmn) |
5f8e077c LR |
466 | { |
467 | int i; | |
468 | ||
469 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) { | |
470 | if (allCountries[i].regDmnEnum == regdmn) | |
471 | return &allCountries[i]; | |
472 | } | |
473 | return NULL; | |
474 | } | |
475 | ||
476 | /* Returns the map of the EEPROM set RD to a country code */ | |
3a702e49 | 477 | static u16 ath_regd_get_default_country(u16 rd) |
f078f209 | 478 | { |
f078f209 LR |
479 | if (rd & COUNTRY_ERD_FLAG) { |
480 | struct country_code_to_enum_rd *country = NULL; | |
481 | u16 cc = rd & ~COUNTRY_ERD_FLAG; | |
482 | ||
3a702e49 | 483 | country = ath_regd_find_country(cc); |
f078f209 LR |
484 | if (country != NULL) |
485 | return cc; | |
486 | } | |
487 | ||
f078f209 LR |
488 | return CTRY_DEFAULT; |
489 | } | |
490 | ||
5f8e077c | 491 | static struct reg_dmn_pair_mapping* |
3a702e49 | 492 | ath_get_regpair(int regdmn) |
f078f209 LR |
493 | { |
494 | int i; | |
495 | ||
5f8e077c LR |
496 | if (regdmn == NO_ENUMRD) |
497 | return NULL; | |
f078f209 | 498 | for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) { |
5f8e077c LR |
499 | if (regDomainPairs[i].regDmnEnum == regdmn) |
500 | return ®DomainPairs[i]; | |
f078f209 | 501 | } |
5f8e077c | 502 | return NULL; |
f078f209 LR |
503 | } |
504 | ||
6b2b2ffb LR |
505 | static int |
506 | ath_regd_init_wiphy(struct ath_regulatory *reg, | |
507 | struct wiphy *wiphy, | |
508 | int (*reg_notifier)(struct wiphy *wiphy, | |
e3bb249b BC |
509 | struct regulatory_request *request)) |
510 | { | |
511 | const struct ieee80211_regdomain *regd; | |
512 | ||
513 | wiphy->reg_notifier = reg_notifier; | |
5be83de5 | 514 | wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY; |
e3bb249b BC |
515 | |
516 | if (ath_is_world_regd(reg)) { | |
517 | /* | |
518 | * Anything applied here (prior to wiphy registration) gets | |
519 | * saved on the wiphy orig_* parameters | |
520 | */ | |
521 | regd = ath_world_regdomain(reg); | |
5be83de5 | 522 | wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY; |
e3bb249b BC |
523 | } else { |
524 | /* | |
25985edc | 525 | * This gets applied in the case of the absence of CRDA, |
e3bb249b BC |
526 | * it's our own custom world regulatory domain, similar to |
527 | * cfg80211's but we enable passive scanning. | |
528 | */ | |
529 | regd = ath_default_world_regdomain(); | |
530 | } | |
531 | wiphy_apply_custom_regulatory(wiphy, regd); | |
532 | ath_reg_apply_radar_flags(wiphy); | |
533 | ath_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER, reg); | |
534 | return 0; | |
535 | } | |
536 | ||
5d2214ac LR |
537 | /* |
538 | * Some users have reported their EEPROM programmed with | |
539 | * 0x8000 set, this is not a supported regulatory domain | |
540 | * but since we have more than one user with it we need | |
541 | * a solution for them. We default to 0x64, which is the | |
542 | * default Atheros world regulatory domain. | |
543 | */ | |
544 | static void ath_regd_sanitize(struct ath_regulatory *reg) | |
545 | { | |
546 | if (reg->current_rd != COUNTRY_ERD_FLAG) | |
547 | return; | |
548 | printk(KERN_DEBUG "ath: EEPROM regdomain sanitized\n"); | |
549 | reg->current_rd = 0x64; | |
550 | } | |
551 | ||
43fcb430 | 552 | static int __ath_regd_init(struct ath_regulatory *reg) |
f078f209 | 553 | { |
f078f209 | 554 | struct country_code_to_enum_rd *country = NULL; |
e775aaf0 | 555 | u16 regdmn; |
f078f209 | 556 | |
e03e5ffd LR |
557 | if (!reg) |
558 | return -EINVAL; | |
559 | ||
5d2214ac LR |
560 | ath_regd_sanitize(reg); |
561 | ||
e03e5ffd LR |
562 | printk(KERN_DEBUG "ath: EEPROM regdomain: 0x%0x\n", reg->current_rd); |
563 | ||
3a702e49 | 564 | if (!ath_regd_is_eeprom_valid(reg)) { |
85efc86e | 565 | printk(KERN_ERR "ath: Invalid EEPROM contents\n"); |
5f8e077c | 566 | return -EINVAL; |
f078f209 LR |
567 | } |
568 | ||
3a702e49 BC |
569 | regdmn = ath_regd_get_eepromRD(reg); |
570 | reg->country_code = ath_regd_get_default_country(regdmn); | |
f078f209 | 571 | |
c02cf373 | 572 | if (reg->country_code == CTRY_DEFAULT && |
e03e5ffd LR |
573 | regdmn == CTRY_DEFAULT) { |
574 | printk(KERN_DEBUG "ath: EEPROM indicates default " | |
575 | "country code should be used\n"); | |
c02cf373 | 576 | reg->country_code = CTRY_UNITED_STATES; |
e03e5ffd | 577 | } |
f078f209 | 578 | |
c02cf373 | 579 | if (reg->country_code == CTRY_DEFAULT) { |
f078f209 LR |
580 | country = NULL; |
581 | } else { | |
e03e5ffd LR |
582 | printk(KERN_DEBUG "ath: doing EEPROM country->regdmn " |
583 | "map search\n"); | |
3a702e49 | 584 | country = ath_regd_find_country(reg->country_code); |
f078f209 | 585 | if (country == NULL) { |
c02cf373 | 586 | printk(KERN_DEBUG |
e03e5ffd LR |
587 | "ath: no valid country maps found for " |
588 | "country code: 0x%0x\n", | |
c02cf373 | 589 | reg->country_code); |
5f8e077c | 590 | return -EINVAL; |
e03e5ffd | 591 | } else { |
f078f209 | 592 | regdmn = country->regDmnEnum; |
e03e5ffd LR |
593 | printk(KERN_DEBUG "ath: country maps to " |
594 | "regdmn code: 0x%0x\n", | |
595 | regdmn); | |
596 | } | |
f078f209 LR |
597 | } |
598 | ||
3a702e49 | 599 | reg->regpair = ath_get_regpair(regdmn); |
f078f209 | 600 | |
c02cf373 | 601 | if (!reg->regpair) { |
3a702e49 | 602 | printk(KERN_DEBUG "ath: " |
5f8e077c LR |
603 | "No regulatory domain pair found, cannot continue\n"); |
604 | return -EINVAL; | |
f078f209 | 605 | } |
f078f209 | 606 | |
5f8e077c | 607 | if (!country) |
3a702e49 | 608 | country = ath_regd_find_country_by_rd(regdmn); |
f078f209 | 609 | |
5f8e077c | 610 | if (country) { |
c02cf373 BC |
611 | reg->alpha2[0] = country->isoName[0]; |
612 | reg->alpha2[1] = country->isoName[1]; | |
f078f209 | 613 | } else { |
c02cf373 BC |
614 | reg->alpha2[0] = '0'; |
615 | reg->alpha2[1] = '0'; | |
f078f209 LR |
616 | } |
617 | ||
3a702e49 | 618 | printk(KERN_DEBUG "ath: Country alpha2 being used: %c%c\n", |
c02cf373 | 619 | reg->alpha2[0], reg->alpha2[1]); |
e03e5ffd | 620 | printk(KERN_DEBUG "ath: Regpair used: 0x%0x\n", |
c02cf373 | 621 | reg->regpair->regDmnEnum); |
f078f209 | 622 | |
43fcb430 LR |
623 | return 0; |
624 | } | |
625 | ||
626 | int | |
627 | ath_regd_init(struct ath_regulatory *reg, | |
628 | struct wiphy *wiphy, | |
629 | int (*reg_notifier)(struct wiphy *wiphy, | |
630 | struct regulatory_request *request)) | |
631 | { | |
de1c732b LR |
632 | struct ath_common *common = container_of(reg, struct ath_common, |
633 | regulatory); | |
43fcb430 LR |
634 | int r; |
635 | ||
636 | r = __ath_regd_init(reg); | |
637 | if (r) | |
638 | return r; | |
639 | ||
de1c732b LR |
640 | if (ath_is_world_regd(reg)) |
641 | memcpy(&common->reg_world_copy, reg, | |
642 | sizeof(struct ath_regulatory)); | |
643 | ||
e3bb249b | 644 | ath_regd_init_wiphy(reg, wiphy, reg_notifier); |
43fcb430 | 645 | |
5f8e077c | 646 | return 0; |
f078f209 | 647 | } |
3a702e49 | 648 | EXPORT_SYMBOL(ath_regd_init); |
f078f209 | 649 | |
3a702e49 BC |
650 | u32 ath_regd_get_band_ctl(struct ath_regulatory *reg, |
651 | enum ieee80211_band band) | |
f078f209 | 652 | { |
c02cf373 BC |
653 | if (!reg->regpair || |
654 | (reg->country_code == CTRY_DEFAULT && | |
3a702e49 | 655 | is_wwr_sku(ath_regd_get_eepromRD(reg)))) { |
fc2ada30 BC |
656 | return SD_NO_CTL; |
657 | } | |
658 | ||
659 | switch (band) { | |
660 | case IEEE80211_BAND_2GHZ: | |
c02cf373 | 661 | return reg->regpair->reg_2ghz_ctl; |
fc2ada30 | 662 | case IEEE80211_BAND_5GHZ: |
c02cf373 | 663 | return reg->regpair->reg_5ghz_ctl; |
fc2ada30 BC |
664 | default: |
665 | return NO_CTL; | |
f078f209 | 666 | } |
fc2ada30 | 667 | } |
3a702e49 | 668 | EXPORT_SYMBOL(ath_regd_get_band_ctl); |