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5b435de0 AS |
1 | /* |
2 | * Copyright (c) 2010 Broadcom Corporation | |
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 ANY | |
11 | * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION | |
13 | * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN | |
14 | * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
15 | */ | |
16 | ||
17 | #include <linux/types.h> | |
cf03c5da | 18 | #include <net/cfg80211.h> |
5b435de0 | 19 | #include <net/mac80211.h> |
cf03c5da | 20 | #include <net/regulatory.h> |
5b435de0 AS |
21 | |
22 | #include <defs.h> | |
23 | #include "pub.h" | |
24 | #include "phy/phy_hal.h" | |
25 | #include "main.h" | |
26 | #include "stf.h" | |
27 | #include "channel.h" | |
cf03c5da | 28 | #include "mac80211_if.h" |
b353dda4 | 29 | #include "debug.h" |
5b435de0 AS |
30 | |
31 | /* QDB() macro takes a dB value and converts to a quarter dB value */ | |
32 | #define QDB(n) ((n) * BRCMS_TXPWR_DB_FACTOR) | |
33 | ||
5b435de0 AS |
34 | #define LOCALE_MIMO_IDX_bn 0 |
35 | #define LOCALE_MIMO_IDX_11n 0 | |
36 | ||
5b435de0 AS |
37 | /* max of BAND_5G_PWR_LVLS and 14 for 2.4 GHz */ |
38 | #define BRCMS_MAXPWR_MIMO_TBL_SIZE 14 | |
39 | ||
5b435de0 AS |
40 | /* maxpwr mapping to 5GHz band channels: |
41 | * maxpwr[0] - channels [34-48] | |
42 | * maxpwr[1] - channels [52-60] | |
43 | * maxpwr[2] - channels [62-64] | |
44 | * maxpwr[3] - channels [100-140] | |
45 | * maxpwr[4] - channels [149-165] | |
46 | */ | |
47 | #define BAND_5G_PWR_LVLS 5 /* 5 power levels for 5G */ | |
48 | ||
49 | #define LC(id) LOCALE_MIMO_IDX_ ## id | |
50 | ||
edc7651f SF |
51 | #define LOCALES(mimo2, mimo5) \ |
52 | {LC(mimo2), LC(mimo5)} | |
5b435de0 | 53 | |
5b435de0 AS |
54 | /* macro to get 5 GHz channel group index for tx power */ |
55 | #define CHANNEL_POWER_IDX_5G(c) (((c) < 52) ? 0 : \ | |
56 | (((c) < 62) ? 1 : \ | |
57 | (((c) < 100) ? 2 : \ | |
58 | (((c) < 149) ? 3 : 4)))) | |
59 | ||
cf03c5da SF |
60 | #define BRCM_2GHZ_2412_2462 REG_RULE(2412-10, 2462+10, 40, 0, 19, 0) |
61 | #define BRCM_2GHZ_2467_2472 REG_RULE(2467-10, 2472+10, 20, 0, 19, \ | |
62 | NL80211_RRF_PASSIVE_SCAN | \ | |
63 | NL80211_RRF_NO_IBSS) | |
64 | ||
65 | #define BRCM_5GHZ_5180_5240 REG_RULE(5180-10, 5240+10, 40, 0, 21, \ | |
66 | NL80211_RRF_PASSIVE_SCAN | \ | |
67 | NL80211_RRF_NO_IBSS) | |
68 | #define BRCM_5GHZ_5260_5320 REG_RULE(5260-10, 5320+10, 40, 0, 21, \ | |
69 | NL80211_RRF_PASSIVE_SCAN | \ | |
70 | NL80211_RRF_DFS | \ | |
71 | NL80211_RRF_NO_IBSS) | |
72 | #define BRCM_5GHZ_5500_5700 REG_RULE(5500-10, 5700+10, 40, 0, 21, \ | |
73 | NL80211_RRF_PASSIVE_SCAN | \ | |
74 | NL80211_RRF_DFS | \ | |
75 | NL80211_RRF_NO_IBSS) | |
76 | #define BRCM_5GHZ_5745_5825 REG_RULE(5745-10, 5825+10, 40, 0, 21, \ | |
77 | NL80211_RRF_PASSIVE_SCAN | \ | |
78 | NL80211_RRF_NO_IBSS) | |
79 | ||
80 | static const struct ieee80211_regdomain brcms_regdom_x2 = { | |
8a096148 | 81 | .n_reg_rules = 6, |
cf03c5da SF |
82 | .alpha2 = "X2", |
83 | .reg_rules = { | |
84 | BRCM_2GHZ_2412_2462, | |
85 | BRCM_2GHZ_2467_2472, | |
86 | BRCM_5GHZ_5180_5240, | |
87 | BRCM_5GHZ_5260_5320, | |
88 | BRCM_5GHZ_5500_5700, | |
89 | BRCM_5GHZ_5745_5825, | |
90 | } | |
91 | }; | |
92 | ||
5b435de0 AS |
93 | /* locale per-channel tx power limits for MIMO frames |
94 | * maxpwr arrays are index by channel for 2.4 GHz limits, and | |
95 | * by sub-band for 5 GHz limits using CHANNEL_POWER_IDX_5G(channel) | |
96 | */ | |
97 | struct locale_mimo_info { | |
98 | /* tx 20 MHz power limits, qdBm units */ | |
99 | s8 maxpwr20[BRCMS_MAXPWR_MIMO_TBL_SIZE]; | |
100 | /* tx 40 MHz power limits, qdBm units */ | |
101 | s8 maxpwr40[BRCMS_MAXPWR_MIMO_TBL_SIZE]; | |
5b435de0 AS |
102 | }; |
103 | ||
104 | /* Country names and abbreviations with locale defined from ISO 3166 */ | |
105 | struct country_info { | |
5b435de0 AS |
106 | const u8 locale_mimo_2G; /* 2.4G mimo info */ |
107 | const u8 locale_mimo_5G; /* 5G mimo info */ | |
108 | }; | |
109 | ||
cf03c5da SF |
110 | struct brcms_regd { |
111 | struct country_info country; | |
112 | const struct ieee80211_regdomain *regdomain; | |
113 | }; | |
114 | ||
5b435de0 AS |
115 | struct brcms_cm_info { |
116 | struct brcms_pub *pub; | |
117 | struct brcms_c_info *wlc; | |
cf03c5da | 118 | const struct brcms_regd *world_regd; |
5b435de0 AS |
119 | }; |
120 | ||
121 | /* | |
122 | * MIMO Locale Definitions - 2.4 GHz | |
123 | */ | |
124 | static const struct locale_mimo_info locale_bn = { | |
125 | {QDB(13), QDB(13), QDB(13), QDB(13), QDB(13), | |
126 | QDB(13), QDB(13), QDB(13), QDB(13), QDB(13), | |
127 | QDB(13), QDB(13), QDB(13)}, | |
128 | {0, 0, QDB(13), QDB(13), QDB(13), | |
129 | QDB(13), QDB(13), QDB(13), QDB(13), QDB(13), | |
130 | QDB(13), 0, 0}, | |
5b435de0 AS |
131 | }; |
132 | ||
133 | static const struct locale_mimo_info *g_mimo_2g_table[] = { | |
134 | &locale_bn | |
135 | }; | |
136 | ||
137 | /* | |
138 | * MIMO Locale Definitions - 5 GHz | |
139 | */ | |
140 | static const struct locale_mimo_info locale_11n = { | |
141 | { /* 12.5 dBm */ 50, 50, 50, QDB(15), QDB(15)}, | |
142 | {QDB(14), QDB(15), QDB(15), QDB(15), QDB(15)}, | |
5b435de0 AS |
143 | }; |
144 | ||
145 | static const struct locale_mimo_info *g_mimo_5g_table[] = { | |
146 | &locale_11n | |
147 | }; | |
148 | ||
cf03c5da SF |
149 | static const struct brcms_regd cntry_locales[] = { |
150 | /* Worldwide RoW 2, must always be at index 0 */ | |
5b435de0 | 151 | { |
edc7651f | 152 | .country = LOCALES(bn, 11n), |
cf03c5da SF |
153 | .regdomain = &brcms_regdom_x2, |
154 | }, | |
5b435de0 AS |
155 | }; |
156 | ||
5b435de0 AS |
157 | static const struct locale_mimo_info *brcms_c_get_mimo_2g(u8 locale_idx) |
158 | { | |
159 | if (locale_idx >= ARRAY_SIZE(g_mimo_2g_table)) | |
160 | return NULL; | |
161 | ||
162 | return g_mimo_2g_table[locale_idx]; | |
163 | } | |
164 | ||
165 | static const struct locale_mimo_info *brcms_c_get_mimo_5g(u8 locale_idx) | |
166 | { | |
167 | if (locale_idx >= ARRAY_SIZE(g_mimo_5g_table)) | |
168 | return NULL; | |
169 | ||
170 | return g_mimo_5g_table[locale_idx]; | |
171 | } | |
172 | ||
94a2ca31 AS |
173 | /* |
174 | * Indicates whether the country provided is valid to pass | |
175 | * to cfg80211 or not. | |
176 | * | |
177 | * returns true if valid; false if not. | |
178 | */ | |
179 | static bool brcms_c_country_valid(const char *ccode) | |
180 | { | |
181 | /* | |
182 | * only allow ascii alpha uppercase for the first 2 | |
183 | * chars. | |
184 | */ | |
185 | if (!((0x80 & ccode[0]) == 0 && ccode[0] >= 0x41 && ccode[0] <= 0x5A && | |
186 | (0x80 & ccode[1]) == 0 && ccode[1] >= 0x41 && ccode[1] <= 0x5A && | |
187 | ccode[2] == '\0')) | |
188 | return false; | |
189 | ||
190 | /* | |
191 | * do not match ISO 3166-1 user assigned country codes | |
192 | * that may be in the driver table | |
193 | */ | |
194 | if (!strcmp("AA", ccode) || /* AA */ | |
195 | !strcmp("ZZ", ccode) || /* ZZ */ | |
196 | ccode[0] == 'X' || /* XA - XZ */ | |
197 | (ccode[0] == 'Q' && /* QM - QZ */ | |
198 | (ccode[1] >= 'M' && ccode[1] <= 'Z'))) | |
199 | return false; | |
200 | ||
201 | if (!strcmp("NA", ccode)) | |
202 | return false; | |
203 | ||
204 | return true; | |
205 | } | |
206 | ||
cf03c5da | 207 | static const struct brcms_regd *brcms_world_regd(const char *regdom, int len) |
5b435de0 | 208 | { |
cf03c5da SF |
209 | const struct brcms_regd *regd = NULL; |
210 | int i; | |
5b435de0 | 211 | |
cf03c5da SF |
212 | for (i = 0; i < ARRAY_SIZE(cntry_locales); i++) { |
213 | if (!strncmp(regdom, cntry_locales[i].regdomain->alpha2, len)) { | |
214 | regd = &cntry_locales[i]; | |
215 | break; | |
216 | } | |
5b435de0 AS |
217 | } |
218 | ||
cf03c5da | 219 | return regd; |
5b435de0 AS |
220 | } |
221 | ||
cf03c5da | 222 | static const struct brcms_regd *brcms_default_world_regd(void) |
5b435de0 | 223 | { |
cf03c5da | 224 | return &cntry_locales[0]; |
5b435de0 AS |
225 | } |
226 | ||
5b435de0 AS |
227 | /* JP, J1 - J10 are Japan ccodes */ |
228 | static bool brcms_c_japan_ccode(const char *ccode) | |
229 | { | |
230 | return (ccode[0] == 'J' && | |
231 | (ccode[1] == 'P' || (ccode[1] >= '1' && ccode[1] <= '9'))); | |
232 | } | |
233 | ||
5b435de0 AS |
234 | static void |
235 | brcms_c_channel_min_txpower_limits_with_local_constraint( | |
236 | struct brcms_cm_info *wlc_cm, struct txpwr_limits *txpwr, | |
237 | u8 local_constraint_qdbm) | |
238 | { | |
239 | int j; | |
240 | ||
241 | /* CCK Rates */ | |
242 | for (j = 0; j < WL_TX_POWER_CCK_NUM; j++) | |
243 | txpwr->cck[j] = min(txpwr->cck[j], local_constraint_qdbm); | |
244 | ||
245 | /* 20 MHz Legacy OFDM SISO */ | |
246 | for (j = 0; j < WL_TX_POWER_OFDM_NUM; j++) | |
247 | txpwr->ofdm[j] = min(txpwr->ofdm[j], local_constraint_qdbm); | |
248 | ||
249 | /* 20 MHz Legacy OFDM CDD */ | |
250 | for (j = 0; j < BRCMS_NUM_RATES_OFDM; j++) | |
251 | txpwr->ofdm_cdd[j] = | |
252 | min(txpwr->ofdm_cdd[j], local_constraint_qdbm); | |
253 | ||
254 | /* 40 MHz Legacy OFDM SISO */ | |
255 | for (j = 0; j < BRCMS_NUM_RATES_OFDM; j++) | |
256 | txpwr->ofdm_40_siso[j] = | |
257 | min(txpwr->ofdm_40_siso[j], local_constraint_qdbm); | |
258 | ||
259 | /* 40 MHz Legacy OFDM CDD */ | |
260 | for (j = 0; j < BRCMS_NUM_RATES_OFDM; j++) | |
261 | txpwr->ofdm_40_cdd[j] = | |
262 | min(txpwr->ofdm_40_cdd[j], local_constraint_qdbm); | |
263 | ||
264 | /* 20MHz MCS 0-7 SISO */ | |
265 | for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++) | |
266 | txpwr->mcs_20_siso[j] = | |
267 | min(txpwr->mcs_20_siso[j], local_constraint_qdbm); | |
268 | ||
269 | /* 20MHz MCS 0-7 CDD */ | |
270 | for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++) | |
271 | txpwr->mcs_20_cdd[j] = | |
272 | min(txpwr->mcs_20_cdd[j], local_constraint_qdbm); | |
273 | ||
274 | /* 20MHz MCS 0-7 STBC */ | |
275 | for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++) | |
276 | txpwr->mcs_20_stbc[j] = | |
277 | min(txpwr->mcs_20_stbc[j], local_constraint_qdbm); | |
278 | ||
279 | /* 20MHz MCS 8-15 MIMO */ | |
280 | for (j = 0; j < BRCMS_NUM_RATES_MCS_2_STREAM; j++) | |
281 | txpwr->mcs_20_mimo[j] = | |
282 | min(txpwr->mcs_20_mimo[j], local_constraint_qdbm); | |
283 | ||
284 | /* 40MHz MCS 0-7 SISO */ | |
285 | for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++) | |
286 | txpwr->mcs_40_siso[j] = | |
287 | min(txpwr->mcs_40_siso[j], local_constraint_qdbm); | |
288 | ||
289 | /* 40MHz MCS 0-7 CDD */ | |
290 | for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++) | |
291 | txpwr->mcs_40_cdd[j] = | |
292 | min(txpwr->mcs_40_cdd[j], local_constraint_qdbm); | |
293 | ||
294 | /* 40MHz MCS 0-7 STBC */ | |
295 | for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++) | |
296 | txpwr->mcs_40_stbc[j] = | |
297 | min(txpwr->mcs_40_stbc[j], local_constraint_qdbm); | |
298 | ||
299 | /* 40MHz MCS 8-15 MIMO */ | |
300 | for (j = 0; j < BRCMS_NUM_RATES_MCS_2_STREAM; j++) | |
301 | txpwr->mcs_40_mimo[j] = | |
302 | min(txpwr->mcs_40_mimo[j], local_constraint_qdbm); | |
303 | ||
304 | /* 40MHz MCS 32 */ | |
305 | txpwr->mcs32 = min(txpwr->mcs32, local_constraint_qdbm); | |
306 | ||
307 | } | |
308 | ||
5b435de0 AS |
309 | /* |
310 | * set the driver's current country and regulatory information | |
311 | * using a country code as the source. Look up built in country | |
312 | * information found with the country code. | |
313 | */ | |
314 | static void | |
cf03c5da SF |
315 | brcms_c_set_country(struct brcms_cm_info *wlc_cm, |
316 | const struct brcms_regd *regd) | |
5b435de0 | 317 | { |
5b435de0 | 318 | struct brcms_c_info *wlc = wlc_cm->wlc; |
5b435de0 | 319 | |
5b435de0 AS |
320 | if ((wlc->pub->_n_enab & SUPPORT_11N) != |
321 | wlc->protection->nmode_user) | |
322 | brcms_c_set_nmode(wlc); | |
323 | ||
324 | brcms_c_stf_ss_update(wlc, wlc->bandstate[BAND_2G_INDEX]); | |
325 | brcms_c_stf_ss_update(wlc, wlc->bandstate[BAND_5G_INDEX]); | |
5b435de0 | 326 | |
edc7651f | 327 | brcms_c_set_gmode(wlc, wlc->protection->gmode_user, false); |
5b435de0 AS |
328 | |
329 | return; | |
330 | } | |
331 | ||
5b435de0 AS |
332 | struct brcms_cm_info *brcms_c_channel_mgr_attach(struct brcms_c_info *wlc) |
333 | { | |
334 | struct brcms_cm_info *wlc_cm; | |
5b435de0 | 335 | struct brcms_pub *pub = wlc->pub; |
898d3c3b | 336 | struct ssb_sprom *sprom = &wlc->hw->d11core->bus->sprom; |
cf03c5da SF |
337 | const char *ccode = sprom->alpha2; |
338 | int ccode_len = sizeof(sprom->alpha2); | |
5b435de0 | 339 | |
5b435de0 AS |
340 | wlc_cm = kzalloc(sizeof(struct brcms_cm_info), GFP_ATOMIC); |
341 | if (wlc_cm == NULL) | |
342 | return NULL; | |
343 | wlc_cm->pub = pub; | |
344 | wlc_cm->wlc = wlc; | |
345 | wlc->cmi = wlc_cm; | |
346 | ||
347 | /* store the country code for passing up as a regulatory hint */ | |
cf03c5da SF |
348 | wlc_cm->world_regd = brcms_world_regd(ccode, ccode_len); |
349 | if (brcms_c_country_valid(ccode)) | |
350 | strncpy(wlc->pub->srom_ccode, ccode, ccode_len); | |
351 | ||
352 | /* | |
353 | * If no custom world domain is found in the SROM, use the | |
354 | * default "X2" domain. | |
355 | */ | |
356 | if (!wlc_cm->world_regd) { | |
357 | wlc_cm->world_regd = brcms_default_world_regd(); | |
358 | ccode = wlc_cm->world_regd->regdomain->alpha2; | |
359 | ccode_len = BRCM_CNTRY_BUF_SZ - 1; | |
360 | } | |
5b435de0 | 361 | |
5b435de0 | 362 | /* save default country for exiting 11d regulatory mode */ |
cf03c5da | 363 | strncpy(wlc->country_default, ccode, ccode_len); |
5b435de0 AS |
364 | |
365 | /* initialize autocountry_default to driver default */ | |
cf03c5da | 366 | strncpy(wlc->autocountry_default, ccode, ccode_len); |
5b435de0 | 367 | |
cf03c5da | 368 | brcms_c_set_country(wlc_cm, wlc_cm->world_regd); |
5b435de0 AS |
369 | |
370 | return wlc_cm; | |
371 | } | |
372 | ||
373 | void brcms_c_channel_mgr_detach(struct brcms_cm_info *wlc_cm) | |
374 | { | |
375 | kfree(wlc_cm); | |
376 | } | |
377 | ||
5b435de0 AS |
378 | void |
379 | brcms_c_channel_set_chanspec(struct brcms_cm_info *wlc_cm, u16 chanspec, | |
380 | u8 local_constraint_qdbm) | |
381 | { | |
382 | struct brcms_c_info *wlc = wlc_cm->wlc; | |
853346d8 | 383 | struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.channel; |
5b435de0 AS |
384 | struct txpwr_limits txpwr; |
385 | ||
386 | brcms_c_channel_reg_limits(wlc_cm, chanspec, &txpwr); | |
387 | ||
388 | brcms_c_channel_min_txpower_limits_with_local_constraint( | |
389 | wlc_cm, &txpwr, local_constraint_qdbm | |
390 | ); | |
391 | ||
edc7651f | 392 | /* set or restore gmode as required by regulatory */ |
7f38e5bc | 393 | if (ch->flags & IEEE80211_CHAN_NO_OFDM) |
edc7651f SF |
394 | brcms_c_set_gmode(wlc, GMODE_LEGACY_B, false); |
395 | else | |
396 | brcms_c_set_gmode(wlc, wlc->protection->gmode_user, false); | |
397 | ||
5b435de0 | 398 | brcms_b_set_chanspec(wlc->hw, chanspec, |
853346d8 | 399 | !!(ch->flags & IEEE80211_CHAN_PASSIVE_SCAN), |
5b435de0 AS |
400 | &txpwr); |
401 | } | |
402 | ||
5b435de0 AS |
403 | void |
404 | brcms_c_channel_reg_limits(struct brcms_cm_info *wlc_cm, u16 chanspec, | |
405 | struct txpwr_limits *txpwr) | |
406 | { | |
407 | struct brcms_c_info *wlc = wlc_cm->wlc; | |
2cf5089e | 408 | struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.channel; |
5b435de0 AS |
409 | uint i; |
410 | uint chan; | |
411 | int maxpwr; | |
412 | int delta; | |
413 | const struct country_info *country; | |
414 | struct brcms_band *band; | |
5b435de0 | 415 | int conducted_max = BRCMS_TXPWR_MAX; |
5b435de0 AS |
416 | const struct locale_mimo_info *li_mimo; |
417 | int maxpwr20, maxpwr40; | |
418 | int maxpwr_idx; | |
419 | uint j; | |
420 | ||
421 | memset(txpwr, 0, sizeof(struct txpwr_limits)); | |
422 | ||
2cf5089e SF |
423 | if (WARN_ON(!ch)) |
424 | return; | |
425 | ||
cf03c5da | 426 | country = &wlc_cm->world_regd->country; |
5b435de0 AS |
427 | |
428 | chan = CHSPEC_CHANNEL(chanspec); | |
429 | band = wlc->bandstate[chspec_bandunit(chanspec)]; | |
5b435de0 AS |
430 | li_mimo = (band->bandtype == BRCM_BAND_5G) ? |
431 | brcms_c_get_mimo_5g(country->locale_mimo_5G) : | |
432 | brcms_c_get_mimo_2g(country->locale_mimo_2G); | |
433 | ||
2cf5089e | 434 | delta = band->antgain; |
5b435de0 | 435 | |
edc7651f | 436 | if (band->bandtype == BRCM_BAND_2G) |
5b435de0 | 437 | conducted_max = QDB(22); |
2cf5089e SF |
438 | |
439 | maxpwr = QDB(ch->max_power) - delta; | |
440 | maxpwr = max(maxpwr, 0); | |
441 | maxpwr = min(maxpwr, conducted_max); | |
5b435de0 AS |
442 | |
443 | /* CCK txpwr limits for 2.4G band */ | |
444 | if (band->bandtype == BRCM_BAND_2G) { | |
5b435de0 AS |
445 | for (i = 0; i < BRCMS_NUM_RATES_CCK; i++) |
446 | txpwr->cck[i] = (u8) maxpwr; | |
447 | } | |
448 | ||
2cf5089e | 449 | for (i = 0; i < BRCMS_NUM_RATES_OFDM; i++) { |
5b435de0 AS |
450 | txpwr->ofdm[i] = (u8) maxpwr; |
451 | ||
5b435de0 AS |
452 | /* |
453 | * OFDM 40 MHz SISO has the same power as the corresponding | |
454 | * MCS0-7 rate unless overriden by the locale specific code. | |
455 | * We set this value to 0 as a flag (presumably 0 dBm isn't | |
456 | * a possibility) and then copy the MCS0-7 value to the 40 MHz | |
457 | * value if it wasn't explicitly set. | |
458 | */ | |
459 | txpwr->ofdm_40_siso[i] = 0; | |
460 | ||
461 | txpwr->ofdm_cdd[i] = (u8) maxpwr; | |
462 | ||
463 | txpwr->ofdm_40_cdd[i] = 0; | |
464 | } | |
465 | ||
2cf5089e SF |
466 | delta = 0; |
467 | if (band->antgain > QDB(6)) | |
468 | delta = band->antgain - QDB(6); /* Excess over 6 dB */ | |
5b435de0 AS |
469 | |
470 | if (band->bandtype == BRCM_BAND_2G) | |
471 | maxpwr_idx = (chan - 1); | |
472 | else | |
473 | maxpwr_idx = CHANNEL_POWER_IDX_5G(chan); | |
474 | ||
475 | maxpwr20 = li_mimo->maxpwr20[maxpwr_idx]; | |
476 | maxpwr40 = li_mimo->maxpwr40[maxpwr_idx]; | |
477 | ||
478 | maxpwr20 = maxpwr20 - delta; | |
479 | maxpwr20 = max(maxpwr20, 0); | |
480 | maxpwr40 = maxpwr40 - delta; | |
481 | maxpwr40 = max(maxpwr40, 0); | |
482 | ||
483 | /* Fill in the MCS 0-7 (SISO) rates */ | |
484 | for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) { | |
485 | ||
486 | /* | |
487 | * 20 MHz has the same power as the corresponding OFDM rate | |
488 | * unless overriden by the locale specific code. | |
489 | */ | |
490 | txpwr->mcs_20_siso[i] = txpwr->ofdm[i]; | |
491 | txpwr->mcs_40_siso[i] = 0; | |
492 | } | |
493 | ||
494 | /* Fill in the MCS 0-7 CDD rates */ | |
495 | for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) { | |
496 | txpwr->mcs_20_cdd[i] = (u8) maxpwr20; | |
497 | txpwr->mcs_40_cdd[i] = (u8) maxpwr40; | |
498 | } | |
499 | ||
500 | /* | |
501 | * These locales have SISO expressed in the | |
502 | * table and override CDD later | |
503 | */ | |
504 | if (li_mimo == &locale_bn) { | |
505 | if (li_mimo == &locale_bn) { | |
506 | maxpwr20 = QDB(16); | |
507 | maxpwr40 = 0; | |
508 | ||
509 | if (chan >= 3 && chan <= 11) | |
510 | maxpwr40 = QDB(16); | |
511 | } | |
512 | ||
513 | for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) { | |
514 | txpwr->mcs_20_siso[i] = (u8) maxpwr20; | |
515 | txpwr->mcs_40_siso[i] = (u8) maxpwr40; | |
516 | } | |
517 | } | |
518 | ||
519 | /* Fill in the MCS 0-7 STBC rates */ | |
520 | for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) { | |
521 | txpwr->mcs_20_stbc[i] = 0; | |
522 | txpwr->mcs_40_stbc[i] = 0; | |
523 | } | |
524 | ||
525 | /* Fill in the MCS 8-15 SDM rates */ | |
526 | for (i = 0; i < BRCMS_NUM_RATES_MCS_2_STREAM; i++) { | |
527 | txpwr->mcs_20_mimo[i] = (u8) maxpwr20; | |
528 | txpwr->mcs_40_mimo[i] = (u8) maxpwr40; | |
529 | } | |
530 | ||
531 | /* Fill in MCS32 */ | |
532 | txpwr->mcs32 = (u8) maxpwr40; | |
533 | ||
534 | for (i = 0, j = 0; i < BRCMS_NUM_RATES_OFDM; i++, j++) { | |
535 | if (txpwr->ofdm_40_cdd[i] == 0) | |
536 | txpwr->ofdm_40_cdd[i] = txpwr->mcs_40_cdd[j]; | |
537 | if (i == 0) { | |
538 | i = i + 1; | |
539 | if (txpwr->ofdm_40_cdd[i] == 0) | |
540 | txpwr->ofdm_40_cdd[i] = txpwr->mcs_40_cdd[j]; | |
541 | } | |
542 | } | |
543 | ||
544 | /* | |
545 | * Copy the 40 MHZ MCS 0-7 CDD value to the 40 MHZ MCS 0-7 SISO | |
546 | * value if it wasn't provided explicitly. | |
547 | */ | |
548 | for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) { | |
549 | if (txpwr->mcs_40_siso[i] == 0) | |
550 | txpwr->mcs_40_siso[i] = txpwr->mcs_40_cdd[i]; | |
551 | } | |
552 | ||
553 | for (i = 0, j = 0; i < BRCMS_NUM_RATES_OFDM; i++, j++) { | |
554 | if (txpwr->ofdm_40_siso[i] == 0) | |
555 | txpwr->ofdm_40_siso[i] = txpwr->mcs_40_siso[j]; | |
556 | if (i == 0) { | |
557 | i = i + 1; | |
558 | if (txpwr->ofdm_40_siso[i] == 0) | |
559 | txpwr->ofdm_40_siso[i] = txpwr->mcs_40_siso[j]; | |
560 | } | |
561 | } | |
562 | ||
563 | /* | |
564 | * Copy the 20 and 40 MHz MCS0-7 CDD values to the corresponding | |
565 | * STBC values if they weren't provided explicitly. | |
566 | */ | |
567 | for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) { | |
568 | if (txpwr->mcs_20_stbc[i] == 0) | |
569 | txpwr->mcs_20_stbc[i] = txpwr->mcs_20_cdd[i]; | |
570 | ||
571 | if (txpwr->mcs_40_stbc[i] == 0) | |
572 | txpwr->mcs_40_stbc[i] = txpwr->mcs_40_cdd[i]; | |
573 | } | |
574 | ||
5b435de0 AS |
575 | return; |
576 | } | |
577 | ||
3de67818 AB |
578 | /* |
579 | * Verify the chanspec is using a legal set of parameters, i.e. that the | |
580 | * chanspec specified a band, bw, ctl_sb and channel and that the | |
581 | * combination could be legal given any set of circumstances. | |
582 | * RETURNS: true is the chanspec is malformed, false if it looks good. | |
583 | */ | |
584 | static bool brcms_c_chspec_malformed(u16 chanspec) | |
585 | { | |
586 | /* must be 2G or 5G band */ | |
587 | if (!CHSPEC_IS5G(chanspec) && !CHSPEC_IS2G(chanspec)) | |
588 | return true; | |
589 | /* must be 20 or 40 bandwidth */ | |
590 | if (!CHSPEC_IS40(chanspec) && !CHSPEC_IS20(chanspec)) | |
591 | return true; | |
592 | ||
593 | /* 20MHZ b/w must have no ctl sb, 40 must have a ctl sb */ | |
594 | if (CHSPEC_IS20(chanspec)) { | |
595 | if (!CHSPEC_SB_NONE(chanspec)) | |
596 | return true; | |
597 | } else if (!CHSPEC_SB_UPPER(chanspec) && !CHSPEC_SB_LOWER(chanspec)) { | |
598 | return true; | |
599 | } | |
600 | ||
601 | return false; | |
602 | } | |
603 | ||
5b435de0 AS |
604 | /* |
605 | * Validate the chanspec for this locale, for 40MHZ we need to also | |
606 | * check that the sidebands are valid 20MZH channels in this locale | |
607 | * and they are also a legal HT combination | |
608 | */ | |
609 | static bool | |
853346d8 | 610 | brcms_c_valid_chanspec_ext(struct brcms_cm_info *wlc_cm, u16 chspec) |
5b435de0 AS |
611 | { |
612 | struct brcms_c_info *wlc = wlc_cm->wlc; | |
613 | u8 channel = CHSPEC_CHANNEL(chspec); | |
614 | ||
615 | /* check the chanspec */ | |
3de67818 | 616 | if (brcms_c_chspec_malformed(chspec)) { |
b353dda4 SF |
617 | brcms_err(wlc->hw->d11core, "wl%d: malformed chanspec 0x%x\n", |
618 | wlc->pub->unit, chspec); | |
5b435de0 AS |
619 | return false; |
620 | } | |
621 | ||
622 | if (CHANNEL_BANDUNIT(wlc_cm->wlc, channel) != | |
623 | chspec_bandunit(chspec)) | |
624 | return false; | |
625 | ||
853346d8 | 626 | return true; |
5b435de0 AS |
627 | } |
628 | ||
629 | bool brcms_c_valid_chanspec_db(struct brcms_cm_info *wlc_cm, u16 chspec) | |
630 | { | |
853346d8 | 631 | return brcms_c_valid_chanspec_ext(wlc_cm, chspec); |
5b435de0 | 632 | } |
cf03c5da SF |
633 | |
634 | static bool brcms_is_radar_freq(u16 center_freq) | |
635 | { | |
636 | return center_freq >= 5260 && center_freq <= 5700; | |
637 | } | |
638 | ||
639 | static void brcms_reg_apply_radar_flags(struct wiphy *wiphy) | |
640 | { | |
641 | struct ieee80211_supported_band *sband; | |
642 | struct ieee80211_channel *ch; | |
643 | int i; | |
644 | ||
645 | sband = wiphy->bands[IEEE80211_BAND_5GHZ]; | |
646 | if (!sband) | |
647 | return; | |
648 | ||
649 | for (i = 0; i < sband->n_channels; i++) { | |
650 | ch = &sband->channels[i]; | |
651 | ||
652 | if (!brcms_is_radar_freq(ch->center_freq)) | |
653 | continue; | |
654 | ||
655 | /* | |
656 | * All channels in this range should be passive and have | |
657 | * DFS enabled. | |
658 | */ | |
659 | if (!(ch->flags & IEEE80211_CHAN_DISABLED)) | |
660 | ch->flags |= IEEE80211_CHAN_RADAR | | |
661 | IEEE80211_CHAN_NO_IBSS | | |
662 | IEEE80211_CHAN_PASSIVE_SCAN; | |
663 | } | |
664 | } | |
665 | ||
666 | static void | |
667 | brcms_reg_apply_beaconing_flags(struct wiphy *wiphy, | |
668 | enum nl80211_reg_initiator initiator) | |
669 | { | |
670 | struct ieee80211_supported_band *sband; | |
671 | struct ieee80211_channel *ch; | |
672 | const struct ieee80211_reg_rule *rule; | |
361c9c8b | 673 | int band, i; |
cf03c5da SF |
674 | |
675 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
676 | sband = wiphy->bands[band]; | |
677 | if (!sband) | |
678 | continue; | |
679 | ||
680 | for (i = 0; i < sband->n_channels; i++) { | |
681 | ch = &sband->channels[i]; | |
682 | ||
683 | if (ch->flags & | |
684 | (IEEE80211_CHAN_DISABLED | IEEE80211_CHAN_RADAR)) | |
685 | continue; | |
686 | ||
687 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) { | |
361c9c8b JB |
688 | rule = freq_reg_info(wiphy, ch->center_freq); |
689 | if (IS_ERR(rule)) | |
cf03c5da SF |
690 | continue; |
691 | ||
692 | if (!(rule->flags & NL80211_RRF_NO_IBSS)) | |
693 | ch->flags &= ~IEEE80211_CHAN_NO_IBSS; | |
694 | if (!(rule->flags & NL80211_RRF_PASSIVE_SCAN)) | |
695 | ch->flags &= | |
696 | ~IEEE80211_CHAN_PASSIVE_SCAN; | |
697 | } else if (ch->beacon_found) { | |
698 | ch->flags &= ~(IEEE80211_CHAN_NO_IBSS | | |
699 | IEEE80211_CHAN_PASSIVE_SCAN); | |
700 | } | |
701 | } | |
702 | } | |
703 | } | |
704 | ||
0c0280bd LR |
705 | static void brcms_reg_notifier(struct wiphy *wiphy, |
706 | struct regulatory_request *request) | |
cf03c5da SF |
707 | { |
708 | struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); | |
709 | struct brcms_info *wl = hw->priv; | |
710 | struct brcms_c_info *wlc = wl->wlc; | |
2ab631f4 SF |
711 | struct ieee80211_supported_band *sband; |
712 | struct ieee80211_channel *ch; | |
713 | int band, i; | |
714 | bool ch_found = false; | |
cf03c5da SF |
715 | |
716 | brcms_reg_apply_radar_flags(wiphy); | |
717 | ||
718 | if (request->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) | |
719 | brcms_reg_apply_beaconing_flags(wiphy, request->initiator); | |
720 | ||
2ab631f4 SF |
721 | /* Disable radio if all channels disallowed by regulatory */ |
722 | for (band = 0; !ch_found && band < IEEE80211_NUM_BANDS; band++) { | |
723 | sband = wiphy->bands[band]; | |
724 | if (!sband) | |
725 | continue; | |
726 | ||
727 | for (i = 0; !ch_found && i < sband->n_channels; i++) { | |
728 | ch = &sband->channels[i]; | |
729 | ||
730 | if (!(ch->flags & IEEE80211_CHAN_DISABLED)) | |
731 | ch_found = true; | |
732 | } | |
733 | } | |
734 | ||
735 | if (ch_found) { | |
736 | mboolclr(wlc->pub->radio_disabled, WL_RADIO_COUNTRY_DISABLE); | |
737 | } else { | |
738 | mboolset(wlc->pub->radio_disabled, WL_RADIO_COUNTRY_DISABLE); | |
b353dda4 SF |
739 | brcms_err(wlc->hw->d11core, |
740 | "wl%d: %s: no valid channel for \"%s\"\n", | |
2ab631f4 SF |
741 | wlc->pub->unit, __func__, request->alpha2); |
742 | } | |
743 | ||
cf03c5da SF |
744 | if (wlc->pub->_nbands > 1 || wlc->band->bandtype == BRCM_BAND_2G) |
745 | wlc_phy_chanspec_ch14_widefilter_set(wlc->band->pi, | |
746 | brcms_c_japan_ccode(request->alpha2)); | |
cf03c5da SF |
747 | } |
748 | ||
749 | void brcms_c_regd_init(struct brcms_c_info *wlc) | |
750 | { | |
751 | struct wiphy *wiphy = wlc->wiphy; | |
752 | const struct brcms_regd *regd = wlc->cmi->world_regd; | |
753 | struct ieee80211_supported_band *sband; | |
754 | struct ieee80211_channel *ch; | |
755 | struct brcms_chanvec sup_chan; | |
756 | struct brcms_band *band; | |
757 | int band_idx, i; | |
758 | ||
759 | /* Disable any channels not supported by the phy */ | |
32c336a5 AS |
760 | for (band_idx = 0; band_idx < wlc->pub->_nbands; band_idx++) { |
761 | band = wlc->bandstate[band_idx]; | |
c49aa4aa | 762 | |
cf03c5da SF |
763 | wlc_phy_chanspec_band_validch(band->pi, band->bandtype, |
764 | &sup_chan); | |
765 | ||
32c336a5 AS |
766 | if (band_idx == BAND_2G_INDEX) |
767 | sband = wiphy->bands[IEEE80211_BAND_2GHZ]; | |
768 | else | |
769 | sband = wiphy->bands[IEEE80211_BAND_5GHZ]; | |
770 | ||
cf03c5da SF |
771 | for (i = 0; i < sband->n_channels; i++) { |
772 | ch = &sband->channels[i]; | |
773 | if (!isset(sup_chan.vec, ch->hw_value)) | |
774 | ch->flags |= IEEE80211_CHAN_DISABLED; | |
775 | } | |
776 | } | |
777 | ||
778 | wlc->wiphy->reg_notifier = brcms_reg_notifier; | |
779 | wlc->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY | | |
780 | WIPHY_FLAG_STRICT_REGULATORY; | |
781 | wiphy_apply_custom_regulatory(wlc->wiphy, regd->regdomain); | |
782 | brcms_reg_apply_beaconing_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER); | |
783 | } |