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,\ | |
40 | NL80211_RRF_PASSIVE_SCAN) | |
41 | #define ATH9K_2GHZ_CH14 REG_RULE(2484-10, 2484+10, 40, 0, 20,\ | |
42 | NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_OFDM) | |
43 | ||
44 | /* We allow IBSS on these on a case by case basis by regulatory domain */ | |
45 | #define ATH9K_5GHZ_5150_5350 REG_RULE(5150-10, 5350+10, 40, 0, 30,\ | |
46 | NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS) | |
47 | #define ATH9K_5GHZ_5470_5850 REG_RULE(5470-10, 5850+10, 40, 0, 30,\ | |
48 | NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS) | |
49 | #define ATH9K_5GHZ_5725_5850 REG_RULE(5725-10, 5850+10, 40, 0, 30,\ | |
50 | NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS) | |
51 | ||
52 | #define ATH9K_2GHZ_ALL ATH9K_2GHZ_CH01_11, \ | |
53 | ATH9K_2GHZ_CH12_13, \ | |
54 | ATH9K_2GHZ_CH14 | |
55 | ||
56 | #define ATH9K_5GHZ_ALL ATH9K_5GHZ_5150_5350, \ | |
57 | ATH9K_5GHZ_5470_5850 | |
cfcfe446 | 58 | |
5f8e077c LR |
59 | /* This one skips what we call "mid band" */ |
60 | #define ATH9K_5GHZ_NO_MIDBAND ATH9K_5GHZ_5150_5350, \ | |
61 | ATH9K_5GHZ_5725_5850 | |
62 | ||
63 | /* Can be used for: | |
64 | * 0x60, 0x61, 0x62 */ | |
3a702e49 | 65 | static const struct ieee80211_regdomain ath_world_regdom_60_61_62 = { |
5f8e077c LR |
66 | .n_reg_rules = 5, |
67 | .alpha2 = "99", | |
68 | .reg_rules = { | |
69 | ATH9K_2GHZ_ALL, | |
70 | ATH9K_5GHZ_ALL, | |
71 | } | |
72 | }; | |
73 | ||
74 | /* Can be used by 0x63 and 0x65 */ | |
3a702e49 | 75 | static const struct ieee80211_regdomain ath_world_regdom_63_65 = { |
5f8e077c LR |
76 | .n_reg_rules = 4, |
77 | .alpha2 = "99", | |
78 | .reg_rules = { | |
79 | ATH9K_2GHZ_CH01_11, | |
80 | ATH9K_2GHZ_CH12_13, | |
81 | ATH9K_5GHZ_NO_MIDBAND, | |
82 | } | |
83 | }; | |
84 | ||
85 | /* Can be used by 0x64 only */ | |
3a702e49 | 86 | static const struct ieee80211_regdomain ath_world_regdom_64 = { |
5f8e077c LR |
87 | .n_reg_rules = 3, |
88 | .alpha2 = "99", | |
89 | .reg_rules = { | |
90 | ATH9K_2GHZ_CH01_11, | |
91 | ATH9K_5GHZ_NO_MIDBAND, | |
92 | } | |
93 | }; | |
94 | ||
95 | /* Can be used by 0x66 and 0x69 */ | |
3a702e49 | 96 | static const struct ieee80211_regdomain ath_world_regdom_66_69 = { |
5f8e077c LR |
97 | .n_reg_rules = 3, |
98 | .alpha2 = "99", | |
99 | .reg_rules = { | |
100 | ATH9K_2GHZ_CH01_11, | |
101 | ATH9K_5GHZ_ALL, | |
102 | } | |
103 | }; | |
104 | ||
34a0a202 SB |
105 | /* Can be used by 0x67, 0x68, 0x6A and 0x6C */ |
106 | static const struct ieee80211_regdomain ath_world_regdom_67_68_6A_6C = { | |
5f8e077c LR |
107 | .n_reg_rules = 4, |
108 | .alpha2 = "99", | |
109 | .reg_rules = { | |
110 | ATH9K_2GHZ_CH01_11, | |
111 | ATH9K_2GHZ_CH12_13, | |
112 | ATH9K_5GHZ_ALL, | |
113 | } | |
114 | }; | |
f078f209 | 115 | |
d0f48f9d BC |
116 | static inline bool is_wwr_sku(u16 regd) |
117 | { | |
641eabb0 CL |
118 | return ((regd & COUNTRY_ERD_FLAG) != COUNTRY_ERD_FLAG) && |
119 | (((regd & WORLD_SKU_MASK) == WORLD_SKU_PREFIX) || | |
120 | (regd == WORLD)); | |
d0f48f9d BC |
121 | } |
122 | ||
3a702e49 | 123 | static u16 ath_regd_get_eepromRD(struct ath_regulatory *reg) |
f078f209 | 124 | { |
c02cf373 | 125 | return reg->current_rd & ~WORLDWIDE_ROAMING_FLAG; |
f078f209 LR |
126 | } |
127 | ||
3a702e49 | 128 | bool ath_is_world_regd(struct ath_regulatory *reg) |
5f8e077c | 129 | { |
3a702e49 | 130 | return is_wwr_sku(ath_regd_get_eepromRD(reg)); |
f078f209 | 131 | } |
3a702e49 | 132 | EXPORT_SYMBOL(ath_is_world_regd); |
f078f209 | 133 | |
e3bb249b | 134 | static const struct ieee80211_regdomain *ath_default_world_regdomain(void) |
f078f209 | 135 | { |
5f8e077c | 136 | /* this is the most restrictive */ |
3a702e49 | 137 | return &ath_world_regdom_64; |
5f8e077c | 138 | } |
f078f209 | 139 | |
e3bb249b | 140 | static const struct |
3a702e49 | 141 | ieee80211_regdomain *ath_world_regdomain(struct ath_regulatory *reg) |
5f8e077c | 142 | { |
c02cf373 | 143 | switch (reg->regpair->regDmnEnum) { |
5f8e077c LR |
144 | case 0x60: |
145 | case 0x61: | |
146 | case 0x62: | |
3a702e49 | 147 | return &ath_world_regdom_60_61_62; |
5f8e077c LR |
148 | case 0x63: |
149 | case 0x65: | |
3a702e49 | 150 | return &ath_world_regdom_63_65; |
5f8e077c | 151 | case 0x64: |
3a702e49 | 152 | return &ath_world_regdom_64; |
5f8e077c LR |
153 | case 0x66: |
154 | case 0x69: | |
3a702e49 | 155 | return &ath_world_regdom_66_69; |
5f8e077c LR |
156 | case 0x67: |
157 | case 0x68: | |
158 | case 0x6A: | |
34a0a202 SB |
159 | case 0x6C: |
160 | return &ath_world_regdom_67_68_6A_6C; | |
5f8e077c LR |
161 | default: |
162 | WARN_ON(1); | |
3a702e49 | 163 | return ath_default_world_regdomain(); |
f078f209 | 164 | } |
f078f209 LR |
165 | } |
166 | ||
5719efdd BR |
167 | bool ath_is_49ghz_allowed(u16 regdomain) |
168 | { | |
169 | /* possibly more */ | |
170 | return regdomain == MKK9_MKKC; | |
171 | } | |
172 | EXPORT_SYMBOL(ath_is_49ghz_allowed); | |
173 | ||
547e4c2e | 174 | /* Frequency is one where radar detection is required */ |
3a702e49 | 175 | static bool ath_is_radar_freq(u16 center_freq) |
547e4c2e LR |
176 | { |
177 | return (center_freq >= 5260 && center_freq <= 5700); | |
178 | } | |
179 | ||
7519a8f0 | 180 | /* |
84540869 LR |
181 | * N.B: These exception rules do not apply radar freqs. |
182 | * | |
183 | * - We enable adhoc (or beaconing) if allowed by 11d | |
184 | * - We enable active scan if the channel is allowed by 11d | |
185 | * - If no country IE has been processed and a we determine we have | |
186 | * received a beacon on a channel we can enable active scan and | |
187 | * adhoc (or beaconing). | |
7519a8f0 | 188 | */ |
6b2b2ffb LR |
189 | static void |
190 | ath_reg_apply_beaconing_flags(struct wiphy *wiphy, | |
191 | enum nl80211_reg_initiator initiator) | |
f078f209 | 192 | { |
84540869 | 193 | enum ieee80211_band band; |
5f8e077c LR |
194 | struct ieee80211_supported_band *sband; |
195 | const struct ieee80211_reg_rule *reg_rule; | |
196 | struct ieee80211_channel *ch; | |
197 | unsigned int i; | |
198 | u32 bandwidth = 0; | |
199 | int r; | |
200 | ||
84540869 | 201 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
f078f209 | 202 | |
84540869 | 203 | if (!wiphy->bands[band]) |
5f8e077c | 204 | continue; |
84540869 LR |
205 | |
206 | sband = wiphy->bands[band]; | |
207 | ||
208 | for (i = 0; i < sband->n_channels; i++) { | |
209 | ||
210 | ch = &sband->channels[i]; | |
211 | ||
3a702e49 | 212 | if (ath_is_radar_freq(ch->center_freq) || |
84540869 LR |
213 | (ch->flags & IEEE80211_CHAN_RADAR)) |
214 | continue; | |
215 | ||
7db90f4a | 216 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) { |
038659e7 LR |
217 | r = freq_reg_info(wiphy, |
218 | ch->center_freq, | |
219 | bandwidth, | |
220 | ®_rule); | |
84540869 LR |
221 | if (r) |
222 | continue; | |
223 | /* | |
224 | * If 11d had a rule for this channel ensure | |
225 | * we enable adhoc/beaconing if it allows us to | |
226 | * use it. Note that we would have disabled it | |
227 | * by applying our static world regdomain by | |
228 | * default during init, prior to calling our | |
229 | * regulatory_hint(). | |
230 | */ | |
231 | if (!(reg_rule->flags & | |
232 | NL80211_RRF_NO_IBSS)) | |
233 | ch->flags &= | |
234 | ~IEEE80211_CHAN_NO_IBSS; | |
235 | if (!(reg_rule->flags & | |
236 | NL80211_RRF_PASSIVE_SCAN)) | |
237 | ch->flags &= | |
238 | ~IEEE80211_CHAN_PASSIVE_SCAN; | |
239 | } else { | |
240 | if (ch->beacon_found) | |
241 | ch->flags &= ~(IEEE80211_CHAN_NO_IBSS | | |
242 | IEEE80211_CHAN_PASSIVE_SCAN); | |
243 | } | |
244 | } | |
5f8e077c | 245 | } |
84540869 | 246 | |
f078f209 LR |
247 | } |
248 | ||
5f8e077c | 249 | /* Allows active scan scan on Ch 12 and 13 */ |
6b2b2ffb LR |
250 | static void |
251 | ath_reg_apply_active_scan_flags(struct wiphy *wiphy, | |
252 | enum nl80211_reg_initiator initiator) | |
f078f209 | 253 | { |
5f8e077c LR |
254 | struct ieee80211_supported_band *sband; |
255 | struct ieee80211_channel *ch; | |
256 | const struct ieee80211_reg_rule *reg_rule; | |
257 | u32 bandwidth = 0; | |
258 | int r; | |
259 | ||
5f8e077c | 260 | sband = wiphy->bands[IEEE80211_BAND_2GHZ]; |
a59be081 HS |
261 | if (!sband) |
262 | return; | |
5f8e077c | 263 | |
84540869 LR |
264 | /* |
265 | * If no country IE has been received always enable active scan | |
266 | * on these channels. This is only done for specific regulatory SKUs | |
267 | */ | |
7db90f4a | 268 | if (initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) { |
5f8e077c LR |
269 | ch = &sband->channels[11]; /* CH 12 */ |
270 | if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
271 | ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; | |
272 | ch = &sband->channels[12]; /* CH 13 */ | |
273 | if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
274 | ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; | |
275 | return; | |
276 | } | |
f078f209 | 277 | |
84540869 | 278 | /* |
25985edc | 279 | * If a country IE has been received check its rule for this |
5f8e077c | 280 | * channel first before enabling active scan. The passive scan |
84540869 LR |
281 | * would have been enforced by the initial processing of our |
282 | * custom regulatory domain. | |
283 | */ | |
f078f209 | 284 | |
5f8e077c | 285 | ch = &sband->channels[11]; /* CH 12 */ |
038659e7 | 286 | r = freq_reg_info(wiphy, ch->center_freq, bandwidth, ®_rule); |
5f8e077c LR |
287 | if (!r) { |
288 | if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN)) | |
289 | if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
290 | ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; | |
f078f209 LR |
291 | } |
292 | ||
5f8e077c | 293 | ch = &sband->channels[12]; /* CH 13 */ |
038659e7 | 294 | r = freq_reg_info(wiphy, ch->center_freq, bandwidth, ®_rule); |
5f8e077c LR |
295 | if (!r) { |
296 | if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN)) | |
297 | if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
298 | ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; | |
f078f209 | 299 | } |
f078f209 LR |
300 | } |
301 | ||
5f8e077c | 302 | /* Always apply Radar/DFS rules on freq range 5260 MHz - 5700 MHz */ |
e3bb249b | 303 | static void ath_reg_apply_radar_flags(struct wiphy *wiphy) |
f078f209 | 304 | { |
5f8e077c LR |
305 | struct ieee80211_supported_band *sband; |
306 | struct ieee80211_channel *ch; | |
307 | unsigned int i; | |
f078f209 | 308 | |
5f8e077c LR |
309 | if (!wiphy->bands[IEEE80211_BAND_5GHZ]) |
310 | return; | |
f078f209 | 311 | |
5f8e077c | 312 | sband = wiphy->bands[IEEE80211_BAND_5GHZ]; |
f078f209 | 313 | |
5f8e077c LR |
314 | for (i = 0; i < sband->n_channels; i++) { |
315 | ch = &sband->channels[i]; | |
3a702e49 | 316 | if (!ath_is_radar_freq(ch->center_freq)) |
5f8e077c LR |
317 | continue; |
318 | /* We always enable radar detection/DFS on this | |
319 | * frequency range. Additionally we also apply on | |
320 | * this frequency range: | |
321 | * - If STA mode does not yet have DFS supports disable | |
322 | * active scanning | |
323 | * - If adhoc mode does not support DFS yet then | |
324 | * disable adhoc in the frequency. | |
325 | * - If AP mode does not yet support radar detection/DFS | |
326 | * do not allow AP mode | |
327 | */ | |
328 | if (!(ch->flags & IEEE80211_CHAN_DISABLED)) | |
329 | ch->flags |= IEEE80211_CHAN_RADAR | | |
330 | IEEE80211_CHAN_NO_IBSS | | |
331 | IEEE80211_CHAN_PASSIVE_SCAN; | |
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 BC |
348 | ath_reg_apply_beaconing_flags(wiphy, initiator); |
349 | ath_reg_apply_active_scan_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 | ||
3a702e49 | 366 | int ath_reg_notifier_apply(struct wiphy *wiphy, |
6b2b2ffb LR |
367 | struct regulatory_request *request, |
368 | struct ath_regulatory *reg) | |
5f8e077c | 369 | { |
de1c732b LR |
370 | struct ath_common *common = container_of(reg, struct ath_common, |
371 | regulatory); | |
372 | u16 country_code; | |
373 | ||
5f8e077c | 374 | /* We always apply this */ |
3a702e49 | 375 | ath_reg_apply_radar_flags(wiphy); |
f078f209 | 376 | |
931299cf LR |
377 | /* |
378 | * This would happen when we have sent a custom regulatory request | |
379 | * a world regulatory domain and the scheduler hasn't yet processed | |
380 | * any pending requests in the queue. | |
381 | */ | |
382 | if (!request) | |
383 | return 0; | |
384 | ||
5f8e077c | 385 | switch (request->initiator) { |
7db90f4a | 386 | case NL80211_REGDOM_SET_BY_CORE: |
de1c732b LR |
387 | /* |
388 | * If common->reg_world_copy is world roaming it means we *were* | |
389 | * world roaming... so we now have to restore that data. | |
390 | */ | |
391 | if (!ath_is_world_regd(&common->reg_world_copy)) | |
392 | break; | |
393 | ||
394 | memcpy(reg, &common->reg_world_copy, | |
395 | sizeof(struct ath_regulatory)); | |
396 | break; | |
397 | case NL80211_REGDOM_SET_BY_DRIVER: | |
7db90f4a | 398 | case NL80211_REGDOM_SET_BY_USER: |
5f8e077c | 399 | break; |
7db90f4a | 400 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
de1c732b LR |
401 | if (!ath_is_world_regd(reg)) |
402 | break; | |
403 | ||
404 | country_code = ath_regd_find_country_by_name(request->alpha2); | |
405 | if (country_code == (u16) -1) | |
406 | break; | |
407 | ||
408 | reg->current_rd = COUNTRY_ERD_FLAG; | |
409 | reg->current_rd |= country_code; | |
410 | ||
411 | printk(KERN_DEBUG "ath: regdomain 0x%0x updated by CountryIE\n", | |
412 | reg->current_rd); | |
413 | __ath_regd_init(reg); | |
414 | ||
415 | ath_reg_apply_world_flags(wiphy, request->initiator, reg); | |
416 | ||
5f8e077c LR |
417 | break; |
418 | } | |
f078f209 | 419 | |
5f8e077c | 420 | return 0; |
f078f209 | 421 | } |
3a702e49 | 422 | EXPORT_SYMBOL(ath_reg_notifier_apply); |
f078f209 | 423 | |
e3bb249b | 424 | static bool ath_regd_is_eeprom_valid(struct ath_regulatory *reg) |
c02cf373 | 425 | { |
cfcfe446 | 426 | u16 rd = ath_regd_get_eepromRD(reg); |
5f8e077c | 427 | int i; |
f078f209 | 428 | |
5f8e077c LR |
429 | if (rd & COUNTRY_ERD_FLAG) { |
430 | /* EEPROM value is a country code */ | |
431 | u16 cc = rd & ~COUNTRY_ERD_FLAG; | |
e03e5ffd LR |
432 | printk(KERN_DEBUG |
433 | "ath: EEPROM indicates we should expect " | |
434 | "a country code\n"); | |
5f8e077c LR |
435 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) |
436 | if (allCountries[i].countryCode == cc) | |
437 | return true; | |
438 | } else { | |
439 | /* EEPROM value is a regpair value */ | |
e03e5ffd LR |
440 | if (rd != CTRY_DEFAULT) |
441 | printk(KERN_DEBUG "ath: EEPROM indicates we " | |
442 | "should expect a direct regpair map\n"); | |
5f8e077c LR |
443 | for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) |
444 | if (regDomainPairs[i].regDmnEnum == rd) | |
445 | return true; | |
f078f209 | 446 | } |
c02cf373 | 447 | printk(KERN_DEBUG |
3a702e49 | 448 | "ath: invalid regulatory domain/country code 0x%x\n", rd); |
f078f209 LR |
449 | return false; |
450 | } | |
451 | ||
5f8e077c | 452 | /* EEPROM country code to regpair mapping */ |
f078f209 | 453 | static struct country_code_to_enum_rd* |
3a702e49 | 454 | ath_regd_find_country(u16 countryCode) |
f078f209 LR |
455 | { |
456 | int i; | |
457 | ||
458 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) { | |
459 | if (allCountries[i].countryCode == countryCode) | |
460 | return &allCountries[i]; | |
461 | } | |
462 | return NULL; | |
463 | } | |
464 | ||
5f8e077c LR |
465 | /* EEPROM rd code to regpair mapping */ |
466 | static struct country_code_to_enum_rd* | |
3a702e49 | 467 | ath_regd_find_country_by_rd(int regdmn) |
5f8e077c LR |
468 | { |
469 | int i; | |
470 | ||
471 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) { | |
472 | if (allCountries[i].regDmnEnum == regdmn) | |
473 | return &allCountries[i]; | |
474 | } | |
475 | return NULL; | |
476 | } | |
477 | ||
478 | /* Returns the map of the EEPROM set RD to a country code */ | |
3a702e49 | 479 | static u16 ath_regd_get_default_country(u16 rd) |
f078f209 | 480 | { |
f078f209 LR |
481 | if (rd & COUNTRY_ERD_FLAG) { |
482 | struct country_code_to_enum_rd *country = NULL; | |
483 | u16 cc = rd & ~COUNTRY_ERD_FLAG; | |
484 | ||
3a702e49 | 485 | country = ath_regd_find_country(cc); |
f078f209 LR |
486 | if (country != NULL) |
487 | return cc; | |
488 | } | |
489 | ||
f078f209 LR |
490 | return CTRY_DEFAULT; |
491 | } | |
492 | ||
5f8e077c | 493 | static struct reg_dmn_pair_mapping* |
3a702e49 | 494 | ath_get_regpair(int regdmn) |
f078f209 LR |
495 | { |
496 | int i; | |
497 | ||
5f8e077c LR |
498 | if (regdmn == NO_ENUMRD) |
499 | return NULL; | |
f078f209 | 500 | for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) { |
5f8e077c LR |
501 | if (regDomainPairs[i].regDmnEnum == regdmn) |
502 | return ®DomainPairs[i]; | |
f078f209 | 503 | } |
5f8e077c | 504 | return NULL; |
f078f209 LR |
505 | } |
506 | ||
6b2b2ffb LR |
507 | static int |
508 | ath_regd_init_wiphy(struct ath_regulatory *reg, | |
509 | struct wiphy *wiphy, | |
510 | int (*reg_notifier)(struct wiphy *wiphy, | |
e3bb249b BC |
511 | struct regulatory_request *request)) |
512 | { | |
513 | const struct ieee80211_regdomain *regd; | |
514 | ||
515 | wiphy->reg_notifier = reg_notifier; | |
5be83de5 | 516 | wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY; |
e3bb249b BC |
517 | |
518 | if (ath_is_world_regd(reg)) { | |
519 | /* | |
520 | * Anything applied here (prior to wiphy registration) gets | |
521 | * saved on the wiphy orig_* parameters | |
522 | */ | |
523 | regd = ath_world_regdomain(reg); | |
5be83de5 | 524 | wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY; |
e3bb249b BC |
525 | } else { |
526 | /* | |
25985edc | 527 | * This gets applied in the case of the absence of CRDA, |
e3bb249b BC |
528 | * it's our own custom world regulatory domain, similar to |
529 | * cfg80211's but we enable passive scanning. | |
530 | */ | |
531 | regd = ath_default_world_regdomain(); | |
532 | } | |
533 | wiphy_apply_custom_regulatory(wiphy, regd); | |
534 | ath_reg_apply_radar_flags(wiphy); | |
535 | ath_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER, reg); | |
536 | return 0; | |
537 | } | |
538 | ||
5d2214ac LR |
539 | /* |
540 | * Some users have reported their EEPROM programmed with | |
541 | * 0x8000 set, this is not a supported regulatory domain | |
542 | * but since we have more than one user with it we need | |
543 | * a solution for them. We default to 0x64, which is the | |
544 | * default Atheros world regulatory domain. | |
545 | */ | |
546 | static void ath_regd_sanitize(struct ath_regulatory *reg) | |
547 | { | |
548 | if (reg->current_rd != COUNTRY_ERD_FLAG) | |
549 | return; | |
550 | printk(KERN_DEBUG "ath: EEPROM regdomain sanitized\n"); | |
551 | reg->current_rd = 0x64; | |
552 | } | |
553 | ||
43fcb430 | 554 | static int __ath_regd_init(struct ath_regulatory *reg) |
f078f209 | 555 | { |
f078f209 | 556 | struct country_code_to_enum_rd *country = NULL; |
e775aaf0 | 557 | u16 regdmn; |
f078f209 | 558 | |
e03e5ffd LR |
559 | if (!reg) |
560 | return -EINVAL; | |
561 | ||
5d2214ac LR |
562 | ath_regd_sanitize(reg); |
563 | ||
e03e5ffd LR |
564 | printk(KERN_DEBUG "ath: EEPROM regdomain: 0x%0x\n", reg->current_rd); |
565 | ||
3a702e49 | 566 | if (!ath_regd_is_eeprom_valid(reg)) { |
516304b0 | 567 | pr_err("Invalid EEPROM contents\n"); |
5f8e077c | 568 | return -EINVAL; |
f078f209 LR |
569 | } |
570 | ||
3a702e49 BC |
571 | regdmn = ath_regd_get_eepromRD(reg); |
572 | reg->country_code = ath_regd_get_default_country(regdmn); | |
f078f209 | 573 | |
c02cf373 | 574 | if (reg->country_code == CTRY_DEFAULT && |
e03e5ffd LR |
575 | regdmn == CTRY_DEFAULT) { |
576 | printk(KERN_DEBUG "ath: EEPROM indicates default " | |
577 | "country code should be used\n"); | |
c02cf373 | 578 | reg->country_code = CTRY_UNITED_STATES; |
e03e5ffd | 579 | } |
f078f209 | 580 | |
c02cf373 | 581 | if (reg->country_code == CTRY_DEFAULT) { |
f078f209 LR |
582 | country = NULL; |
583 | } else { | |
e03e5ffd LR |
584 | printk(KERN_DEBUG "ath: doing EEPROM country->regdmn " |
585 | "map search\n"); | |
3a702e49 | 586 | country = ath_regd_find_country(reg->country_code); |
f078f209 | 587 | if (country == NULL) { |
c02cf373 | 588 | printk(KERN_DEBUG |
e03e5ffd LR |
589 | "ath: no valid country maps found for " |
590 | "country code: 0x%0x\n", | |
c02cf373 | 591 | reg->country_code); |
5f8e077c | 592 | return -EINVAL; |
e03e5ffd | 593 | } else { |
f078f209 | 594 | regdmn = country->regDmnEnum; |
e03e5ffd LR |
595 | printk(KERN_DEBUG "ath: country maps to " |
596 | "regdmn code: 0x%0x\n", | |
597 | regdmn); | |
598 | } | |
f078f209 LR |
599 | } |
600 | ||
3a702e49 | 601 | reg->regpair = ath_get_regpair(regdmn); |
f078f209 | 602 | |
c02cf373 | 603 | if (!reg->regpair) { |
3a702e49 | 604 | printk(KERN_DEBUG "ath: " |
5f8e077c LR |
605 | "No regulatory domain pair found, cannot continue\n"); |
606 | return -EINVAL; | |
f078f209 | 607 | } |
f078f209 | 608 | |
5f8e077c | 609 | if (!country) |
3a702e49 | 610 | country = ath_regd_find_country_by_rd(regdmn); |
f078f209 | 611 | |
5f8e077c | 612 | if (country) { |
c02cf373 BC |
613 | reg->alpha2[0] = country->isoName[0]; |
614 | reg->alpha2[1] = country->isoName[1]; | |
f078f209 | 615 | } else { |
c02cf373 BC |
616 | reg->alpha2[0] = '0'; |
617 | reg->alpha2[1] = '0'; | |
f078f209 LR |
618 | } |
619 | ||
3a702e49 | 620 | printk(KERN_DEBUG "ath: Country alpha2 being used: %c%c\n", |
c02cf373 | 621 | reg->alpha2[0], reg->alpha2[1]); |
e03e5ffd | 622 | printk(KERN_DEBUG "ath: Regpair used: 0x%0x\n", |
c02cf373 | 623 | reg->regpair->regDmnEnum); |
f078f209 | 624 | |
43fcb430 LR |
625 | return 0; |
626 | } | |
627 | ||
628 | int | |
629 | ath_regd_init(struct ath_regulatory *reg, | |
630 | struct wiphy *wiphy, | |
631 | int (*reg_notifier)(struct wiphy *wiphy, | |
632 | struct regulatory_request *request)) | |
633 | { | |
de1c732b LR |
634 | struct ath_common *common = container_of(reg, struct ath_common, |
635 | regulatory); | |
43fcb430 LR |
636 | int r; |
637 | ||
638 | r = __ath_regd_init(reg); | |
639 | if (r) | |
640 | return r; | |
641 | ||
de1c732b LR |
642 | if (ath_is_world_regd(reg)) |
643 | memcpy(&common->reg_world_copy, reg, | |
644 | sizeof(struct ath_regulatory)); | |
645 | ||
e3bb249b | 646 | ath_regd_init_wiphy(reg, wiphy, reg_notifier); |
43fcb430 | 647 | |
5f8e077c | 648 | return 0; |
f078f209 | 649 | } |
3a702e49 | 650 | EXPORT_SYMBOL(ath_regd_init); |
f078f209 | 651 | |
3a702e49 BC |
652 | u32 ath_regd_get_band_ctl(struct ath_regulatory *reg, |
653 | enum ieee80211_band band) | |
f078f209 | 654 | { |
c02cf373 BC |
655 | if (!reg->regpair || |
656 | (reg->country_code == CTRY_DEFAULT && | |
3a702e49 | 657 | is_wwr_sku(ath_regd_get_eepromRD(reg)))) { |
fc2ada30 BC |
658 | return SD_NO_CTL; |
659 | } | |
660 | ||
661 | switch (band) { | |
662 | case IEEE80211_BAND_2GHZ: | |
c02cf373 | 663 | return reg->regpair->reg_2ghz_ctl; |
fc2ada30 | 664 | case IEEE80211_BAND_5GHZ: |
c02cf373 | 665 | return reg->regpair->reg_5ghz_ctl; |
fc2ada30 BC |
666 | default: |
667 | return NO_CTL; | |
f078f209 | 668 | } |
fc2ada30 | 669 | } |
3a702e49 | 670 | EXPORT_SYMBOL(ath_regd_get_band_ctl); |