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0c817338 LF |
1 | /****************************************************************************** |
2 | * | |
a8d76066 | 3 | * Copyright(c) 2009-2012 Realtek Corporation. |
0c817338 LF |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of version 2 of the GNU General Public License as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA | |
17 | * | |
18 | * The full GNU General Public License is included in this distribution in the | |
19 | * file called LICENSE. | |
20 | * | |
21 | * Contact Information: | |
22 | * wlanfae <wlanfae@realtek.com> | |
23 | * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park, | |
24 | * Hsinchu 300, Taiwan. | |
25 | * | |
26 | * Larry Finger <Larry.Finger@lwfinger.net> | |
27 | * | |
28 | *****************************************************************************/ | |
29 | ||
30 | #include "wifi.h" | |
31 | #include "regd.h" | |
32 | ||
33 | static struct country_code_to_enum_rd allCountries[] = { | |
34 | {COUNTRY_CODE_FCC, "US"}, | |
35 | {COUNTRY_CODE_IC, "US"}, | |
36 | {COUNTRY_CODE_ETSI, "EC"}, | |
37 | {COUNTRY_CODE_SPAIN, "EC"}, | |
38 | {COUNTRY_CODE_FRANCE, "EC"}, | |
39 | {COUNTRY_CODE_MKK, "JP"}, | |
40 | {COUNTRY_CODE_MKK1, "JP"}, | |
41 | {COUNTRY_CODE_ISRAEL, "EC"}, | |
42 | {COUNTRY_CODE_TELEC, "JP"}, | |
43 | {COUNTRY_CODE_MIC, "JP"}, | |
44 | {COUNTRY_CODE_GLOBAL_DOMAIN, "JP"}, | |
45 | {COUNTRY_CODE_WORLD_WIDE_13, "EC"}, | |
46 | {COUNTRY_CODE_TELEC_NETGEAR, "EC"}, | |
47 | }; | |
48 | ||
49 | /* | |
50 | *Only these channels all allow active | |
51 | *scan on all world regulatory domains | |
52 | */ | |
53 | #define RTL819x_2GHZ_CH01_11 \ | |
54 | REG_RULE(2412-10, 2462+10, 40, 0, 20, 0) | |
55 | ||
56 | /* | |
57 | *We enable active scan on these a case | |
58 | *by case basis by regulatory domain | |
59 | */ | |
60 | #define RTL819x_2GHZ_CH12_13 \ | |
61 | REG_RULE(2467-10, 2472+10, 40, 0, 20,\ | |
62 | NL80211_RRF_PASSIVE_SCAN) | |
63 | ||
64 | #define RTL819x_2GHZ_CH14 \ | |
65 | REG_RULE(2484-10, 2484+10, 40, 0, 20, \ | |
66 | NL80211_RRF_PASSIVE_SCAN | \ | |
67 | NL80211_RRF_NO_OFDM) | |
68 | ||
81b29045 C |
69 | /* 5G chan 36 - chan 64*/ |
70 | #define RTL819x_5GHZ_5150_5350 \ | |
71 | REG_RULE(5150-10, 5350+10, 40, 0, 30, \ | |
72 | NL80211_RRF_PASSIVE_SCAN | \ | |
73 | NL80211_RRF_NO_IBSS) | |
74 | ||
75 | /* 5G chan 100 - chan 165*/ | |
76 | #define RTL819x_5GHZ_5470_5850 \ | |
77 | REG_RULE(5470-10, 5850+10, 40, 0, 30, \ | |
78 | NL80211_RRF_PASSIVE_SCAN | \ | |
79 | NL80211_RRF_NO_IBSS) | |
80 | ||
81 | /* 5G chan 149 - chan 165*/ | |
82 | #define RTL819x_5GHZ_5725_5850 \ | |
83 | REG_RULE(5725-10, 5850+10, 40, 0, 30, \ | |
84 | NL80211_RRF_PASSIVE_SCAN | \ | |
85 | NL80211_RRF_NO_IBSS) | |
86 | ||
87 | #define RTL819x_5GHZ_ALL \ | |
88 | (RTL819x_5GHZ_5150_5350, RTL819x_5GHZ_5470_5850) | |
89 | ||
0c817338 LF |
90 | static const struct ieee80211_regdomain rtl_regdom_11 = { |
91 | .n_reg_rules = 1, | |
92 | .alpha2 = "99", | |
93 | .reg_rules = { | |
94 | RTL819x_2GHZ_CH01_11, | |
81b29045 C |
95 | } |
96 | }; | |
97 | ||
98 | static const struct ieee80211_regdomain rtl_regdom_12_13 = { | |
99 | .n_reg_rules = 2, | |
100 | .alpha2 = "99", | |
101 | .reg_rules = { | |
102 | RTL819x_2GHZ_CH01_11, | |
103 | RTL819x_2GHZ_CH12_13, | |
104 | } | |
0c817338 LF |
105 | }; |
106 | ||
81b29045 | 107 | static const struct ieee80211_regdomain rtl_regdom_no_midband = { |
0c817338 LF |
108 | .n_reg_rules = 3, |
109 | .alpha2 = "99", | |
110 | .reg_rules = { | |
111 | RTL819x_2GHZ_CH01_11, | |
81b29045 C |
112 | RTL819x_5GHZ_5150_5350, |
113 | RTL819x_5GHZ_5725_5850, | |
114 | } | |
0c817338 LF |
115 | }; |
116 | ||
81b29045 C |
117 | static const struct ieee80211_regdomain rtl_regdom_60_64 = { |
118 | .n_reg_rules = 3, | |
0c817338 LF |
119 | .alpha2 = "99", |
120 | .reg_rules = { | |
121 | RTL819x_2GHZ_CH01_11, | |
81b29045 C |
122 | RTL819x_2GHZ_CH12_13, |
123 | RTL819x_5GHZ_5725_5850, | |
124 | } | |
125 | }; | |
126 | ||
127 | static const struct ieee80211_regdomain rtl_regdom_14_60_64 = { | |
128 | .n_reg_rules = 4, | |
129 | .alpha2 = "99", | |
130 | .reg_rules = { | |
131 | RTL819x_2GHZ_CH01_11, | |
132 | RTL819x_2GHZ_CH12_13, | |
133 | RTL819x_2GHZ_CH14, | |
134 | RTL819x_5GHZ_5725_5850, | |
135 | } | |
136 | }; | |
137 | ||
138 | static const struct ieee80211_regdomain rtl_regdom_14 = { | |
139 | .n_reg_rules = 3, | |
140 | .alpha2 = "99", | |
141 | .reg_rules = { | |
142 | RTL819x_2GHZ_CH01_11, | |
143 | RTL819x_2GHZ_CH12_13, | |
144 | RTL819x_2GHZ_CH14, | |
145 | } | |
0c817338 LF |
146 | }; |
147 | ||
148 | static bool _rtl_is_radar_freq(u16 center_freq) | |
149 | { | |
150 | return (center_freq >= 5260 && center_freq <= 5700); | |
151 | } | |
152 | ||
153 | static void _rtl_reg_apply_beaconing_flags(struct wiphy *wiphy, | |
154 | enum nl80211_reg_initiator initiator) | |
155 | { | |
156 | enum ieee80211_band band; | |
157 | struct ieee80211_supported_band *sband; | |
158 | const struct ieee80211_reg_rule *reg_rule; | |
159 | struct ieee80211_channel *ch; | |
160 | unsigned int i; | |
161 | u32 bandwidth = 0; | |
162 | int r; | |
163 | ||
164 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
165 | ||
166 | if (!wiphy->bands[band]) | |
167 | continue; | |
168 | ||
169 | sband = wiphy->bands[band]; | |
170 | ||
171 | for (i = 0; i < sband->n_channels; i++) { | |
172 | ch = &sband->channels[i]; | |
173 | if (_rtl_is_radar_freq(ch->center_freq) || | |
174 | (ch->flags & IEEE80211_CHAN_RADAR)) | |
175 | continue; | |
176 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) { | |
177 | r = freq_reg_info(wiphy, ch->center_freq, | |
178 | bandwidth, ®_rule); | |
179 | if (r) | |
180 | continue; | |
181 | ||
182 | /* | |
183 | *If 11d had a rule for this channel ensure | |
184 | *we enable adhoc/beaconing if it allows us to | |
185 | *use it. Note that we would have disabled it | |
186 | *by applying our static world regdomain by | |
187 | *default during init, prior to calling our | |
188 | *regulatory_hint(). | |
189 | */ | |
190 | ||
191 | if (!(reg_rule->flags & NL80211_RRF_NO_IBSS)) | |
192 | ch->flags &= ~IEEE80211_CHAN_NO_IBSS; | |
193 | if (!(reg_rule-> | |
194 | flags & NL80211_RRF_PASSIVE_SCAN)) | |
195 | ch->flags &= | |
196 | ~IEEE80211_CHAN_PASSIVE_SCAN; | |
197 | } else { | |
198 | if (ch->beacon_found) | |
199 | ch->flags &= ~(IEEE80211_CHAN_NO_IBSS | | |
200 | IEEE80211_CHAN_PASSIVE_SCAN); | |
201 | } | |
202 | } | |
203 | } | |
204 | } | |
205 | ||
206 | /* Allows active scan scan on Ch 12 and 13 */ | |
207 | static void _rtl_reg_apply_active_scan_flags(struct wiphy *wiphy, | |
208 | enum nl80211_reg_initiator | |
209 | initiator) | |
210 | { | |
211 | struct ieee80211_supported_band *sband; | |
212 | struct ieee80211_channel *ch; | |
213 | const struct ieee80211_reg_rule *reg_rule; | |
214 | u32 bandwidth = 0; | |
215 | int r; | |
216 | ||
81b29045 C |
217 | if (!wiphy->bands[IEEE80211_BAND_2GHZ]) |
218 | return; | |
0c817338 LF |
219 | sband = wiphy->bands[IEEE80211_BAND_2GHZ]; |
220 | ||
221 | /* | |
222 | *If no country IE has been received always enable active scan | |
223 | *on these channels. This is only done for specific regulatory SKUs | |
224 | */ | |
225 | if (initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) { | |
226 | ch = &sband->channels[11]; /* CH 12 */ | |
227 | if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
228 | ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; | |
229 | ch = &sband->channels[12]; /* CH 13 */ | |
230 | if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
231 | ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; | |
232 | return; | |
233 | } | |
234 | ||
235 | /* | |
25985edc | 236 | *If a country IE has been received check its rule for this |
0c817338 LF |
237 | *channel first before enabling active scan. The passive scan |
238 | *would have been enforced by the initial processing of our | |
239 | *custom regulatory domain. | |
240 | */ | |
241 | ||
242 | ch = &sband->channels[11]; /* CH 12 */ | |
243 | r = freq_reg_info(wiphy, ch->center_freq, bandwidth, ®_rule); | |
244 | if (!r) { | |
245 | if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN)) | |
246 | if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
247 | ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; | |
248 | } | |
249 | ||
250 | ch = &sband->channels[12]; /* CH 13 */ | |
251 | r = freq_reg_info(wiphy, ch->center_freq, bandwidth, ®_rule); | |
252 | if (!r) { | |
253 | if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN)) | |
254 | if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
255 | ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; | |
256 | } | |
257 | } | |
258 | ||
259 | /* | |
260 | *Always apply Radar/DFS rules on | |
261 | *freq range 5260 MHz - 5700 MHz | |
262 | */ | |
263 | static void _rtl_reg_apply_radar_flags(struct wiphy *wiphy) | |
264 | { | |
265 | struct ieee80211_supported_band *sband; | |
266 | struct ieee80211_channel *ch; | |
267 | unsigned int i; | |
268 | ||
269 | if (!wiphy->bands[IEEE80211_BAND_5GHZ]) | |
270 | return; | |
271 | ||
272 | sband = wiphy->bands[IEEE80211_BAND_5GHZ]; | |
273 | ||
274 | for (i = 0; i < sband->n_channels; i++) { | |
275 | ch = &sband->channels[i]; | |
276 | if (!_rtl_is_radar_freq(ch->center_freq)) | |
277 | continue; | |
278 | ||
279 | /* | |
280 | *We always enable radar detection/DFS on this | |
281 | *frequency range. Additionally we also apply on | |
282 | *this frequency range: | |
283 | *- If STA mode does not yet have DFS supports disable | |
284 | * active scanning | |
285 | *- If adhoc mode does not support DFS yet then disable | |
286 | * adhoc in the frequency. | |
287 | *- If AP mode does not yet support radar detection/DFS | |
288 | *do not allow AP mode | |
289 | */ | |
290 | if (!(ch->flags & IEEE80211_CHAN_DISABLED)) | |
291 | ch->flags |= IEEE80211_CHAN_RADAR | | |
292 | IEEE80211_CHAN_NO_IBSS | | |
293 | IEEE80211_CHAN_PASSIVE_SCAN; | |
294 | } | |
295 | } | |
296 | ||
297 | static void _rtl_reg_apply_world_flags(struct wiphy *wiphy, | |
298 | enum nl80211_reg_initiator initiator, | |
299 | struct rtl_regulatory *reg) | |
300 | { | |
301 | _rtl_reg_apply_beaconing_flags(wiphy, initiator); | |
302 | _rtl_reg_apply_active_scan_flags(wiphy, initiator); | |
303 | return; | |
304 | } | |
305 | ||
0c817338 LF |
306 | static int _rtl_reg_notifier_apply(struct wiphy *wiphy, |
307 | struct regulatory_request *request, | |
308 | struct rtl_regulatory *reg) | |
309 | { | |
310 | /* We always apply this */ | |
311 | _rtl_reg_apply_radar_flags(wiphy); | |
312 | ||
313 | switch (request->initiator) { | |
314 | case NL80211_REGDOM_SET_BY_DRIVER: | |
315 | case NL80211_REGDOM_SET_BY_CORE: | |
316 | case NL80211_REGDOM_SET_BY_USER: | |
317 | break; | |
318 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: | |
319 | _rtl_reg_apply_world_flags(wiphy, request->initiator, reg); | |
320 | break; | |
321 | } | |
322 | ||
0c817338 LF |
323 | return 0; |
324 | } | |
325 | ||
326 | static const struct ieee80211_regdomain *_rtl_regdomain_select( | |
327 | struct rtl_regulatory *reg) | |
328 | { | |
329 | switch (reg->country_code) { | |
330 | case COUNTRY_CODE_FCC: | |
81b29045 | 331 | return &rtl_regdom_no_midband; |
0c817338 LF |
332 | case COUNTRY_CODE_IC: |
333 | return &rtl_regdom_11; | |
334 | case COUNTRY_CODE_ETSI: | |
81b29045 C |
335 | case COUNTRY_CODE_TELEC_NETGEAR: |
336 | return &rtl_regdom_60_64; | |
0c817338 LF |
337 | case COUNTRY_CODE_SPAIN: |
338 | case COUNTRY_CODE_FRANCE: | |
339 | case COUNTRY_CODE_ISRAEL: | |
81b29045 C |
340 | case COUNTRY_CODE_WORLD_WIDE_13: |
341 | return &rtl_regdom_12_13; | |
0c817338 LF |
342 | case COUNTRY_CODE_MKK: |
343 | case COUNTRY_CODE_MKK1: | |
344 | case COUNTRY_CODE_TELEC: | |
345 | case COUNTRY_CODE_MIC: | |
81b29045 | 346 | return &rtl_regdom_14_60_64; |
0c817338 | 347 | case COUNTRY_CODE_GLOBAL_DOMAIN: |
81b29045 | 348 | return &rtl_regdom_14; |
0c817338 | 349 | default: |
81b29045 | 350 | return &rtl_regdom_no_midband; |
0c817338 LF |
351 | } |
352 | } | |
353 | ||
354 | static int _rtl_regd_init_wiphy(struct rtl_regulatory *reg, | |
355 | struct wiphy *wiphy, | |
356 | int (*reg_notifier) (struct wiphy *wiphy, | |
357 | struct regulatory_request * | |
358 | request)) | |
359 | { | |
360 | const struct ieee80211_regdomain *regd; | |
361 | ||
362 | wiphy->reg_notifier = reg_notifier; | |
81b29045 | 363 | |
0c817338 LF |
364 | wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY; |
365 | wiphy->flags &= ~WIPHY_FLAG_STRICT_REGULATORY; | |
366 | wiphy->flags &= ~WIPHY_FLAG_DISABLE_BEACON_HINTS; | |
81b29045 | 367 | |
0c817338 LF |
368 | regd = _rtl_regdomain_select(reg); |
369 | wiphy_apply_custom_regulatory(wiphy, regd); | |
370 | _rtl_reg_apply_radar_flags(wiphy); | |
371 | _rtl_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER, reg); | |
372 | return 0; | |
373 | } | |
374 | ||
375 | static struct country_code_to_enum_rd *_rtl_regd_find_country(u16 countrycode) | |
376 | { | |
377 | int i; | |
378 | ||
379 | for (i = 0; i < ARRAY_SIZE(allCountries); i++) { | |
380 | if (allCountries[i].countrycode == countrycode) | |
381 | return &allCountries[i]; | |
382 | } | |
383 | return NULL; | |
384 | } | |
385 | ||
386 | int rtl_regd_init(struct ieee80211_hw *hw, | |
387 | int (*reg_notifier) (struct wiphy *wiphy, | |
388 | struct regulatory_request *request)) | |
389 | { | |
390 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
391 | struct wiphy *wiphy = hw->wiphy; | |
392 | struct country_code_to_enum_rd *country = NULL; | |
393 | ||
394 | if (wiphy == NULL || &rtlpriv->regd == NULL) | |
395 | return -EINVAL; | |
396 | ||
81b29045 C |
397 | /* init country_code from efuse channel plan */ |
398 | rtlpriv->regd.country_code = rtlpriv->efuse.channel_plan; | |
0c817338 LF |
399 | |
400 | RT_TRACE(rtlpriv, COMP_REGD, DBG_TRACE, | |
f30d7507 | 401 | "rtl: EEPROM regdomain: 0x%0x\n", rtlpriv->regd.country_code); |
0c817338 LF |
402 | |
403 | if (rtlpriv->regd.country_code >= COUNTRY_CODE_MAX) { | |
404 | RT_TRACE(rtlpriv, COMP_REGD, DBG_DMESG, | |
f30d7507 | 405 | "rtl: EEPROM indicates invalid contry code, world wide 13 should be used\n"); |
0c817338 LF |
406 | |
407 | rtlpriv->regd.country_code = COUNTRY_CODE_WORLD_WIDE_13; | |
408 | } | |
409 | ||
410 | country = _rtl_regd_find_country(rtlpriv->regd.country_code); | |
411 | ||
412 | if (country) { | |
81b29045 C |
413 | rtlpriv->regd.alpha2[0] = country->iso_name[0]; |
414 | rtlpriv->regd.alpha2[1] = country->iso_name[1]; | |
0c817338 LF |
415 | } else { |
416 | rtlpriv->regd.alpha2[0] = '0'; | |
417 | rtlpriv->regd.alpha2[1] = '0'; | |
418 | } | |
419 | ||
420 | RT_TRACE(rtlpriv, COMP_REGD, DBG_TRACE, | |
f30d7507 JP |
421 | "rtl: Country alpha2 being used: %c%c\n", |
422 | rtlpriv->regd.alpha2[0], rtlpriv->regd.alpha2[1]); | |
0c817338 LF |
423 | |
424 | _rtl_regd_init_wiphy(&rtlpriv->regd, wiphy, reg_notifier); | |
425 | ||
426 | return 0; | |
427 | } | |
428 | ||
429 | int rtl_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request) | |
430 | { | |
431 | struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); | |
432 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
433 | ||
f30d7507 | 434 | RT_TRACE(rtlpriv, COMP_REGD, DBG_LOUD, "\n"); |
0c817338 LF |
435 | |
436 | return _rtl_reg_notifier_apply(wiphy, request, &rtlpriv->regd); | |
437 | } |