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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" |
5b435de0 AS |
29 | |
30 | /* QDB() macro takes a dB value and converts to a quarter dB value */ | |
31 | #define QDB(n) ((n) * BRCMS_TXPWR_DB_FACTOR) | |
32 | ||
5b435de0 AS |
33 | #define LOCALE_MIMO_IDX_bn 0 |
34 | #define LOCALE_MIMO_IDX_11n 0 | |
35 | ||
5b435de0 AS |
36 | /* max of BAND_5G_PWR_LVLS and 14 for 2.4 GHz */ |
37 | #define BRCMS_MAXPWR_MIMO_TBL_SIZE 14 | |
38 | ||
5b435de0 AS |
39 | /* maxpwr mapping to 5GHz band channels: |
40 | * maxpwr[0] - channels [34-48] | |
41 | * maxpwr[1] - channels [52-60] | |
42 | * maxpwr[2] - channels [62-64] | |
43 | * maxpwr[3] - channels [100-140] | |
44 | * maxpwr[4] - channels [149-165] | |
45 | */ | |
46 | #define BAND_5G_PWR_LVLS 5 /* 5 power levels for 5G */ | |
47 | ||
48 | #define LC(id) LOCALE_MIMO_IDX_ ## id | |
49 | ||
edc7651f SF |
50 | #define LOCALES(mimo2, mimo5) \ |
51 | {LC(mimo2), LC(mimo5)} | |
5b435de0 | 52 | |
5b435de0 AS |
53 | /* macro to get 5 GHz channel group index for tx power */ |
54 | #define CHANNEL_POWER_IDX_5G(c) (((c) < 52) ? 0 : \ | |
55 | (((c) < 62) ? 1 : \ | |
56 | (((c) < 100) ? 2 : \ | |
57 | (((c) < 149) ? 3 : 4)))) | |
58 | ||
cf03c5da SF |
59 | #define BRCM_2GHZ_2412_2462 REG_RULE(2412-10, 2462+10, 40, 0, 19, 0) |
60 | #define BRCM_2GHZ_2467_2472 REG_RULE(2467-10, 2472+10, 20, 0, 19, \ | |
61 | NL80211_RRF_PASSIVE_SCAN | \ | |
62 | NL80211_RRF_NO_IBSS) | |
63 | ||
64 | #define BRCM_5GHZ_5180_5240 REG_RULE(5180-10, 5240+10, 40, 0, 21, \ | |
65 | NL80211_RRF_PASSIVE_SCAN | \ | |
66 | NL80211_RRF_NO_IBSS) | |
67 | #define BRCM_5GHZ_5260_5320 REG_RULE(5260-10, 5320+10, 40, 0, 21, \ | |
68 | NL80211_RRF_PASSIVE_SCAN | \ | |
69 | NL80211_RRF_DFS | \ | |
70 | NL80211_RRF_NO_IBSS) | |
71 | #define BRCM_5GHZ_5500_5700 REG_RULE(5500-10, 5700+10, 40, 0, 21, \ | |
72 | NL80211_RRF_PASSIVE_SCAN | \ | |
73 | NL80211_RRF_DFS | \ | |
74 | NL80211_RRF_NO_IBSS) | |
75 | #define BRCM_5GHZ_5745_5825 REG_RULE(5745-10, 5825+10, 40, 0, 21, \ | |
76 | NL80211_RRF_PASSIVE_SCAN | \ | |
77 | NL80211_RRF_NO_IBSS) | |
78 | ||
79 | static const struct ieee80211_regdomain brcms_regdom_x2 = { | |
80 | .n_reg_rules = 7, | |
81 | .alpha2 = "X2", | |
82 | .reg_rules = { | |
83 | BRCM_2GHZ_2412_2462, | |
84 | BRCM_2GHZ_2467_2472, | |
85 | BRCM_5GHZ_5180_5240, | |
86 | BRCM_5GHZ_5260_5320, | |
87 | BRCM_5GHZ_5500_5700, | |
88 | BRCM_5GHZ_5745_5825, | |
89 | } | |
90 | }; | |
91 | ||
5b435de0 AS |
92 | /* locale per-channel tx power limits for MIMO frames |
93 | * maxpwr arrays are index by channel for 2.4 GHz limits, and | |
94 | * by sub-band for 5 GHz limits using CHANNEL_POWER_IDX_5G(channel) | |
95 | */ | |
96 | struct locale_mimo_info { | |
97 | /* tx 20 MHz power limits, qdBm units */ | |
98 | s8 maxpwr20[BRCMS_MAXPWR_MIMO_TBL_SIZE]; | |
99 | /* tx 40 MHz power limits, qdBm units */ | |
100 | s8 maxpwr40[BRCMS_MAXPWR_MIMO_TBL_SIZE]; | |
5b435de0 AS |
101 | }; |
102 | ||
103 | /* Country names and abbreviations with locale defined from ISO 3166 */ | |
104 | struct country_info { | |
5b435de0 AS |
105 | const u8 locale_mimo_2G; /* 2.4G mimo info */ |
106 | const u8 locale_mimo_5G; /* 5G mimo info */ | |
107 | }; | |
108 | ||
cf03c5da SF |
109 | struct brcms_regd { |
110 | struct country_info country; | |
111 | const struct ieee80211_regdomain *regdomain; | |
112 | }; | |
113 | ||
5b435de0 AS |
114 | struct brcms_cm_info { |
115 | struct brcms_pub *pub; | |
116 | struct brcms_c_info *wlc; | |
cf03c5da | 117 | const struct brcms_regd *world_regd; |
5b435de0 AS |
118 | }; |
119 | ||
120 | /* | |
121 | * MIMO Locale Definitions - 2.4 GHz | |
122 | */ | |
123 | static const struct locale_mimo_info locale_bn = { | |
124 | {QDB(13), QDB(13), QDB(13), QDB(13), QDB(13), | |
125 | QDB(13), QDB(13), QDB(13), QDB(13), QDB(13), | |
126 | QDB(13), QDB(13), QDB(13)}, | |
127 | {0, 0, QDB(13), QDB(13), QDB(13), | |
128 | QDB(13), QDB(13), QDB(13), QDB(13), QDB(13), | |
129 | QDB(13), 0, 0}, | |
5b435de0 AS |
130 | }; |
131 | ||
132 | static const struct locale_mimo_info *g_mimo_2g_table[] = { | |
133 | &locale_bn | |
134 | }; | |
135 | ||
136 | /* | |
137 | * MIMO Locale Definitions - 5 GHz | |
138 | */ | |
139 | static const struct locale_mimo_info locale_11n = { | |
140 | { /* 12.5 dBm */ 50, 50, 50, QDB(15), QDB(15)}, | |
141 | {QDB(14), QDB(15), QDB(15), QDB(15), QDB(15)}, | |
5b435de0 AS |
142 | }; |
143 | ||
144 | static const struct locale_mimo_info *g_mimo_5g_table[] = { | |
145 | &locale_11n | |
146 | }; | |
147 | ||
cf03c5da SF |
148 | static const struct brcms_regd cntry_locales[] = { |
149 | /* Worldwide RoW 2, must always be at index 0 */ | |
5b435de0 | 150 | { |
edc7651f | 151 | .country = LOCALES(bn, 11n), |
cf03c5da SF |
152 | .regdomain = &brcms_regdom_x2, |
153 | }, | |
5b435de0 AS |
154 | }; |
155 | ||
5b435de0 AS |
156 | static const struct locale_mimo_info *brcms_c_get_mimo_2g(u8 locale_idx) |
157 | { | |
158 | if (locale_idx >= ARRAY_SIZE(g_mimo_2g_table)) | |
159 | return NULL; | |
160 | ||
161 | return g_mimo_2g_table[locale_idx]; | |
162 | } | |
163 | ||
164 | static const struct locale_mimo_info *brcms_c_get_mimo_5g(u8 locale_idx) | |
165 | { | |
166 | if (locale_idx >= ARRAY_SIZE(g_mimo_5g_table)) | |
167 | return NULL; | |
168 | ||
169 | return g_mimo_5g_table[locale_idx]; | |
170 | } | |
171 | ||
94a2ca31 AS |
172 | /* |
173 | * Indicates whether the country provided is valid to pass | |
174 | * to cfg80211 or not. | |
175 | * | |
176 | * returns true if valid; false if not. | |
177 | */ | |
178 | static bool brcms_c_country_valid(const char *ccode) | |
179 | { | |
180 | /* | |
181 | * only allow ascii alpha uppercase for the first 2 | |
182 | * chars. | |
183 | */ | |
184 | if (!((0x80 & ccode[0]) == 0 && ccode[0] >= 0x41 && ccode[0] <= 0x5A && | |
185 | (0x80 & ccode[1]) == 0 && ccode[1] >= 0x41 && ccode[1] <= 0x5A && | |
186 | ccode[2] == '\0')) | |
187 | return false; | |
188 | ||
189 | /* | |
190 | * do not match ISO 3166-1 user assigned country codes | |
191 | * that may be in the driver table | |
192 | */ | |
193 | if (!strcmp("AA", ccode) || /* AA */ | |
194 | !strcmp("ZZ", ccode) || /* ZZ */ | |
195 | ccode[0] == 'X' || /* XA - XZ */ | |
196 | (ccode[0] == 'Q' && /* QM - QZ */ | |
197 | (ccode[1] >= 'M' && ccode[1] <= 'Z'))) | |
198 | return false; | |
199 | ||
200 | if (!strcmp("NA", ccode)) | |
201 | return false; | |
202 | ||
203 | return true; | |
204 | } | |
205 | ||
cf03c5da | 206 | static const struct brcms_regd *brcms_world_regd(const char *regdom, int len) |
5b435de0 | 207 | { |
cf03c5da SF |
208 | const struct brcms_regd *regd = NULL; |
209 | int i; | |
5b435de0 | 210 | |
cf03c5da SF |
211 | for (i = 0; i < ARRAY_SIZE(cntry_locales); i++) { |
212 | if (!strncmp(regdom, cntry_locales[i].regdomain->alpha2, len)) { | |
213 | regd = &cntry_locales[i]; | |
214 | break; | |
215 | } | |
5b435de0 AS |
216 | } |
217 | ||
cf03c5da | 218 | return regd; |
5b435de0 AS |
219 | } |
220 | ||
cf03c5da | 221 | static const struct brcms_regd *brcms_default_world_regd(void) |
5b435de0 | 222 | { |
cf03c5da | 223 | return &cntry_locales[0]; |
5b435de0 AS |
224 | } |
225 | ||
5b435de0 AS |
226 | /* JP, J1 - J10 are Japan ccodes */ |
227 | static bool brcms_c_japan_ccode(const char *ccode) | |
228 | { | |
229 | return (ccode[0] == 'J' && | |
230 | (ccode[1] == 'P' || (ccode[1] >= '1' && ccode[1] <= '9'))); | |
231 | } | |
232 | ||
5b435de0 AS |
233 | static void |
234 | brcms_c_channel_min_txpower_limits_with_local_constraint( | |
235 | struct brcms_cm_info *wlc_cm, struct txpwr_limits *txpwr, | |
236 | u8 local_constraint_qdbm) | |
237 | { | |
238 | int j; | |
239 | ||
240 | /* CCK Rates */ | |
241 | for (j = 0; j < WL_TX_POWER_CCK_NUM; j++) | |
242 | txpwr->cck[j] = min(txpwr->cck[j], local_constraint_qdbm); | |
243 | ||
244 | /* 20 MHz Legacy OFDM SISO */ | |
245 | for (j = 0; j < WL_TX_POWER_OFDM_NUM; j++) | |
246 | txpwr->ofdm[j] = min(txpwr->ofdm[j], local_constraint_qdbm); | |
247 | ||
248 | /* 20 MHz Legacy OFDM CDD */ | |
249 | for (j = 0; j < BRCMS_NUM_RATES_OFDM; j++) | |
250 | txpwr->ofdm_cdd[j] = | |
251 | min(txpwr->ofdm_cdd[j], local_constraint_qdbm); | |
252 | ||
253 | /* 40 MHz Legacy OFDM SISO */ | |
254 | for (j = 0; j < BRCMS_NUM_RATES_OFDM; j++) | |
255 | txpwr->ofdm_40_siso[j] = | |
256 | min(txpwr->ofdm_40_siso[j], local_constraint_qdbm); | |
257 | ||
258 | /* 40 MHz Legacy OFDM CDD */ | |
259 | for (j = 0; j < BRCMS_NUM_RATES_OFDM; j++) | |
260 | txpwr->ofdm_40_cdd[j] = | |
261 | min(txpwr->ofdm_40_cdd[j], local_constraint_qdbm); | |
262 | ||
263 | /* 20MHz MCS 0-7 SISO */ | |
264 | for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++) | |
265 | txpwr->mcs_20_siso[j] = | |
266 | min(txpwr->mcs_20_siso[j], local_constraint_qdbm); | |
267 | ||
268 | /* 20MHz MCS 0-7 CDD */ | |
269 | for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++) | |
270 | txpwr->mcs_20_cdd[j] = | |
271 | min(txpwr->mcs_20_cdd[j], local_constraint_qdbm); | |
272 | ||
273 | /* 20MHz MCS 0-7 STBC */ | |
274 | for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++) | |
275 | txpwr->mcs_20_stbc[j] = | |
276 | min(txpwr->mcs_20_stbc[j], local_constraint_qdbm); | |
277 | ||
278 | /* 20MHz MCS 8-15 MIMO */ | |
279 | for (j = 0; j < BRCMS_NUM_RATES_MCS_2_STREAM; j++) | |
280 | txpwr->mcs_20_mimo[j] = | |
281 | min(txpwr->mcs_20_mimo[j], local_constraint_qdbm); | |
282 | ||
283 | /* 40MHz MCS 0-7 SISO */ | |
284 | for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++) | |
285 | txpwr->mcs_40_siso[j] = | |
286 | min(txpwr->mcs_40_siso[j], local_constraint_qdbm); | |
287 | ||
288 | /* 40MHz MCS 0-7 CDD */ | |
289 | for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++) | |
290 | txpwr->mcs_40_cdd[j] = | |
291 | min(txpwr->mcs_40_cdd[j], local_constraint_qdbm); | |
292 | ||
293 | /* 40MHz MCS 0-7 STBC */ | |
294 | for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++) | |
295 | txpwr->mcs_40_stbc[j] = | |
296 | min(txpwr->mcs_40_stbc[j], local_constraint_qdbm); | |
297 | ||
298 | /* 40MHz MCS 8-15 MIMO */ | |
299 | for (j = 0; j < BRCMS_NUM_RATES_MCS_2_STREAM; j++) | |
300 | txpwr->mcs_40_mimo[j] = | |
301 | min(txpwr->mcs_40_mimo[j], local_constraint_qdbm); | |
302 | ||
303 | /* 40MHz MCS 32 */ | |
304 | txpwr->mcs32 = min(txpwr->mcs32, local_constraint_qdbm); | |
305 | ||
306 | } | |
307 | ||
5b435de0 AS |
308 | /* |
309 | * set the driver's current country and regulatory information | |
310 | * using a country code as the source. Look up built in country | |
311 | * information found with the country code. | |
312 | */ | |
313 | static void | |
cf03c5da SF |
314 | brcms_c_set_country(struct brcms_cm_info *wlc_cm, |
315 | const struct brcms_regd *regd) | |
5b435de0 | 316 | { |
5b435de0 | 317 | struct brcms_c_info *wlc = wlc_cm->wlc; |
5b435de0 | 318 | |
5b435de0 AS |
319 | if ((wlc->pub->_n_enab & SUPPORT_11N) != |
320 | wlc->protection->nmode_user) | |
321 | brcms_c_set_nmode(wlc); | |
322 | ||
323 | brcms_c_stf_ss_update(wlc, wlc->bandstate[BAND_2G_INDEX]); | |
324 | brcms_c_stf_ss_update(wlc, wlc->bandstate[BAND_5G_INDEX]); | |
5b435de0 | 325 | |
edc7651f | 326 | brcms_c_set_gmode(wlc, wlc->protection->gmode_user, false); |
5b435de0 AS |
327 | |
328 | return; | |
329 | } | |
330 | ||
5b435de0 AS |
331 | struct brcms_cm_info *brcms_c_channel_mgr_attach(struct brcms_c_info *wlc) |
332 | { | |
333 | struct brcms_cm_info *wlc_cm; | |
5b435de0 | 334 | struct brcms_pub *pub = wlc->pub; |
898d3c3b | 335 | struct ssb_sprom *sprom = &wlc->hw->d11core->bus->sprom; |
cf03c5da SF |
336 | const char *ccode = sprom->alpha2; |
337 | int ccode_len = sizeof(sprom->alpha2); | |
5b435de0 AS |
338 | |
339 | BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit); | |
340 | ||
341 | wlc_cm = kzalloc(sizeof(struct brcms_cm_info), GFP_ATOMIC); | |
342 | if (wlc_cm == NULL) | |
343 | return NULL; | |
344 | wlc_cm->pub = pub; | |
345 | wlc_cm->wlc = wlc; | |
346 | wlc->cmi = wlc_cm; | |
347 | ||
348 | /* store the country code for passing up as a regulatory hint */ | |
cf03c5da SF |
349 | wlc_cm->world_regd = brcms_world_regd(ccode, ccode_len); |
350 | if (brcms_c_country_valid(ccode)) | |
351 | strncpy(wlc->pub->srom_ccode, ccode, ccode_len); | |
352 | ||
353 | /* | |
354 | * If no custom world domain is found in the SROM, use the | |
355 | * default "X2" domain. | |
356 | */ | |
357 | if (!wlc_cm->world_regd) { | |
358 | wlc_cm->world_regd = brcms_default_world_regd(); | |
359 | ccode = wlc_cm->world_regd->regdomain->alpha2; | |
360 | ccode_len = BRCM_CNTRY_BUF_SZ - 1; | |
361 | } | |
5b435de0 | 362 | |
5b435de0 | 363 | /* save default country for exiting 11d regulatory mode */ |
cf03c5da | 364 | strncpy(wlc->country_default, ccode, ccode_len); |
5b435de0 AS |
365 | |
366 | /* initialize autocountry_default to driver default */ | |
cf03c5da | 367 | strncpy(wlc->autocountry_default, ccode, ccode_len); |
5b435de0 | 368 | |
cf03c5da | 369 | brcms_c_set_country(wlc_cm, wlc_cm->world_regd); |
5b435de0 AS |
370 | |
371 | return wlc_cm; | |
372 | } | |
373 | ||
374 | void brcms_c_channel_mgr_detach(struct brcms_cm_info *wlc_cm) | |
375 | { | |
376 | kfree(wlc_cm); | |
377 | } | |
378 | ||
5b435de0 AS |
379 | void |
380 | brcms_c_channel_set_chanspec(struct brcms_cm_info *wlc_cm, u16 chanspec, | |
381 | u8 local_constraint_qdbm) | |
382 | { | |
383 | struct brcms_c_info *wlc = wlc_cm->wlc; | |
853346d8 | 384 | struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.channel; |
5b435de0 AS |
385 | struct txpwr_limits txpwr; |
386 | ||
387 | brcms_c_channel_reg_limits(wlc_cm, chanspec, &txpwr); | |
388 | ||
389 | brcms_c_channel_min_txpower_limits_with_local_constraint( | |
390 | wlc_cm, &txpwr, local_constraint_qdbm | |
391 | ); | |
392 | ||
edc7651f | 393 | /* set or restore gmode as required by regulatory */ |
7f38e5bc | 394 | if (ch->flags & IEEE80211_CHAN_NO_OFDM) |
edc7651f SF |
395 | brcms_c_set_gmode(wlc, GMODE_LEGACY_B, false); |
396 | else | |
397 | brcms_c_set_gmode(wlc, wlc->protection->gmode_user, false); | |
398 | ||
5b435de0 | 399 | brcms_b_set_chanspec(wlc->hw, chanspec, |
853346d8 | 400 | !!(ch->flags & IEEE80211_CHAN_PASSIVE_SCAN), |
5b435de0 AS |
401 | &txpwr); |
402 | } | |
403 | ||
5b435de0 AS |
404 | void |
405 | brcms_c_channel_reg_limits(struct brcms_cm_info *wlc_cm, u16 chanspec, | |
406 | struct txpwr_limits *txpwr) | |
407 | { | |
408 | struct brcms_c_info *wlc = wlc_cm->wlc; | |
2cf5089e | 409 | struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.channel; |
5b435de0 AS |
410 | uint i; |
411 | uint chan; | |
412 | int maxpwr; | |
413 | int delta; | |
414 | const struct country_info *country; | |
415 | struct brcms_band *band; | |
5b435de0 | 416 | int conducted_max = BRCMS_TXPWR_MAX; |
5b435de0 AS |
417 | const struct locale_mimo_info *li_mimo; |
418 | int maxpwr20, maxpwr40; | |
419 | int maxpwr_idx; | |
420 | uint j; | |
421 | ||
422 | memset(txpwr, 0, sizeof(struct txpwr_limits)); | |
423 | ||
2cf5089e SF |
424 | if (WARN_ON(!ch)) |
425 | return; | |
426 | ||
cf03c5da | 427 | country = &wlc_cm->world_regd->country; |
5b435de0 AS |
428 | |
429 | chan = CHSPEC_CHANNEL(chanspec); | |
430 | band = wlc->bandstate[chspec_bandunit(chanspec)]; | |
5b435de0 AS |
431 | li_mimo = (band->bandtype == BRCM_BAND_5G) ? |
432 | brcms_c_get_mimo_5g(country->locale_mimo_5G) : | |
433 | brcms_c_get_mimo_2g(country->locale_mimo_2G); | |
434 | ||
2cf5089e | 435 | delta = band->antgain; |
5b435de0 | 436 | |
edc7651f | 437 | if (band->bandtype == BRCM_BAND_2G) |
5b435de0 | 438 | conducted_max = QDB(22); |
2cf5089e SF |
439 | |
440 | maxpwr = QDB(ch->max_power) - delta; | |
441 | maxpwr = max(maxpwr, 0); | |
442 | maxpwr = min(maxpwr, conducted_max); | |
5b435de0 AS |
443 | |
444 | /* CCK txpwr limits for 2.4G band */ | |
445 | if (band->bandtype == BRCM_BAND_2G) { | |
5b435de0 AS |
446 | for (i = 0; i < BRCMS_NUM_RATES_CCK; i++) |
447 | txpwr->cck[i] = (u8) maxpwr; | |
448 | } | |
449 | ||
2cf5089e | 450 | for (i = 0; i < BRCMS_NUM_RATES_OFDM; i++) { |
5b435de0 AS |
451 | txpwr->ofdm[i] = (u8) maxpwr; |
452 | ||
5b435de0 AS |
453 | /* |
454 | * OFDM 40 MHz SISO has the same power as the corresponding | |
455 | * MCS0-7 rate unless overriden by the locale specific code. | |
456 | * We set this value to 0 as a flag (presumably 0 dBm isn't | |
457 | * a possibility) and then copy the MCS0-7 value to the 40 MHz | |
458 | * value if it wasn't explicitly set. | |
459 | */ | |
460 | txpwr->ofdm_40_siso[i] = 0; | |
461 | ||
462 | txpwr->ofdm_cdd[i] = (u8) maxpwr; | |
463 | ||
464 | txpwr->ofdm_40_cdd[i] = 0; | |
465 | } | |
466 | ||
2cf5089e SF |
467 | delta = 0; |
468 | if (band->antgain > QDB(6)) | |
469 | delta = band->antgain - QDB(6); /* Excess over 6 dB */ | |
5b435de0 AS |
470 | |
471 | if (band->bandtype == BRCM_BAND_2G) | |
472 | maxpwr_idx = (chan - 1); | |
473 | else | |
474 | maxpwr_idx = CHANNEL_POWER_IDX_5G(chan); | |
475 | ||
476 | maxpwr20 = li_mimo->maxpwr20[maxpwr_idx]; | |
477 | maxpwr40 = li_mimo->maxpwr40[maxpwr_idx]; | |
478 | ||
479 | maxpwr20 = maxpwr20 - delta; | |
480 | maxpwr20 = max(maxpwr20, 0); | |
481 | maxpwr40 = maxpwr40 - delta; | |
482 | maxpwr40 = max(maxpwr40, 0); | |
483 | ||
484 | /* Fill in the MCS 0-7 (SISO) rates */ | |
485 | for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) { | |
486 | ||
487 | /* | |
488 | * 20 MHz has the same power as the corresponding OFDM rate | |
489 | * unless overriden by the locale specific code. | |
490 | */ | |
491 | txpwr->mcs_20_siso[i] = txpwr->ofdm[i]; | |
492 | txpwr->mcs_40_siso[i] = 0; | |
493 | } | |
494 | ||
495 | /* Fill in the MCS 0-7 CDD rates */ | |
496 | for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) { | |
497 | txpwr->mcs_20_cdd[i] = (u8) maxpwr20; | |
498 | txpwr->mcs_40_cdd[i] = (u8) maxpwr40; | |
499 | } | |
500 | ||
501 | /* | |
502 | * These locales have SISO expressed in the | |
503 | * table and override CDD later | |
504 | */ | |
505 | if (li_mimo == &locale_bn) { | |
506 | if (li_mimo == &locale_bn) { | |
507 | maxpwr20 = QDB(16); | |
508 | maxpwr40 = 0; | |
509 | ||
510 | if (chan >= 3 && chan <= 11) | |
511 | maxpwr40 = QDB(16); | |
512 | } | |
513 | ||
514 | for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) { | |
515 | txpwr->mcs_20_siso[i] = (u8) maxpwr20; | |
516 | txpwr->mcs_40_siso[i] = (u8) maxpwr40; | |
517 | } | |
518 | } | |
519 | ||
520 | /* Fill in the MCS 0-7 STBC rates */ | |
521 | for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) { | |
522 | txpwr->mcs_20_stbc[i] = 0; | |
523 | txpwr->mcs_40_stbc[i] = 0; | |
524 | } | |
525 | ||
526 | /* Fill in the MCS 8-15 SDM rates */ | |
527 | for (i = 0; i < BRCMS_NUM_RATES_MCS_2_STREAM; i++) { | |
528 | txpwr->mcs_20_mimo[i] = (u8) maxpwr20; | |
529 | txpwr->mcs_40_mimo[i] = (u8) maxpwr40; | |
530 | } | |
531 | ||
532 | /* Fill in MCS32 */ | |
533 | txpwr->mcs32 = (u8) maxpwr40; | |
534 | ||
535 | for (i = 0, j = 0; i < BRCMS_NUM_RATES_OFDM; i++, j++) { | |
536 | if (txpwr->ofdm_40_cdd[i] == 0) | |
537 | txpwr->ofdm_40_cdd[i] = txpwr->mcs_40_cdd[j]; | |
538 | if (i == 0) { | |
539 | i = i + 1; | |
540 | if (txpwr->ofdm_40_cdd[i] == 0) | |
541 | txpwr->ofdm_40_cdd[i] = txpwr->mcs_40_cdd[j]; | |
542 | } | |
543 | } | |
544 | ||
545 | /* | |
546 | * Copy the 40 MHZ MCS 0-7 CDD value to the 40 MHZ MCS 0-7 SISO | |
547 | * value if it wasn't provided explicitly. | |
548 | */ | |
549 | for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) { | |
550 | if (txpwr->mcs_40_siso[i] == 0) | |
551 | txpwr->mcs_40_siso[i] = txpwr->mcs_40_cdd[i]; | |
552 | } | |
553 | ||
554 | for (i = 0, j = 0; i < BRCMS_NUM_RATES_OFDM; i++, j++) { | |
555 | if (txpwr->ofdm_40_siso[i] == 0) | |
556 | txpwr->ofdm_40_siso[i] = txpwr->mcs_40_siso[j]; | |
557 | if (i == 0) { | |
558 | i = i + 1; | |
559 | if (txpwr->ofdm_40_siso[i] == 0) | |
560 | txpwr->ofdm_40_siso[i] = txpwr->mcs_40_siso[j]; | |
561 | } | |
562 | } | |
563 | ||
564 | /* | |
565 | * Copy the 20 and 40 MHz MCS0-7 CDD values to the corresponding | |
566 | * STBC values if they weren't provided explicitly. | |
567 | */ | |
568 | for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) { | |
569 | if (txpwr->mcs_20_stbc[i] == 0) | |
570 | txpwr->mcs_20_stbc[i] = txpwr->mcs_20_cdd[i]; | |
571 | ||
572 | if (txpwr->mcs_40_stbc[i] == 0) | |
573 | txpwr->mcs_40_stbc[i] = txpwr->mcs_40_cdd[i]; | |
574 | } | |
575 | ||
5b435de0 AS |
576 | return; |
577 | } | |
578 | ||
3de67818 AB |
579 | /* |
580 | * Verify the chanspec is using a legal set of parameters, i.e. that the | |
581 | * chanspec specified a band, bw, ctl_sb and channel and that the | |
582 | * combination could be legal given any set of circumstances. | |
583 | * RETURNS: true is the chanspec is malformed, false if it looks good. | |
584 | */ | |
585 | static bool brcms_c_chspec_malformed(u16 chanspec) | |
586 | { | |
587 | /* must be 2G or 5G band */ | |
588 | if (!CHSPEC_IS5G(chanspec) && !CHSPEC_IS2G(chanspec)) | |
589 | return true; | |
590 | /* must be 20 or 40 bandwidth */ | |
591 | if (!CHSPEC_IS40(chanspec) && !CHSPEC_IS20(chanspec)) | |
592 | return true; | |
593 | ||
594 | /* 20MHZ b/w must have no ctl sb, 40 must have a ctl sb */ | |
595 | if (CHSPEC_IS20(chanspec)) { | |
596 | if (!CHSPEC_SB_NONE(chanspec)) | |
597 | return true; | |
598 | } else if (!CHSPEC_SB_UPPER(chanspec) && !CHSPEC_SB_LOWER(chanspec)) { | |
599 | return true; | |
600 | } | |
601 | ||
602 | return false; | |
603 | } | |
604 | ||
5b435de0 AS |
605 | /* |
606 | * Validate the chanspec for this locale, for 40MHZ we need to also | |
607 | * check that the sidebands are valid 20MZH channels in this locale | |
608 | * and they are also a legal HT combination | |
609 | */ | |
610 | static bool | |
853346d8 | 611 | brcms_c_valid_chanspec_ext(struct brcms_cm_info *wlc_cm, u16 chspec) |
5b435de0 AS |
612 | { |
613 | struct brcms_c_info *wlc = wlc_cm->wlc; | |
614 | u8 channel = CHSPEC_CHANNEL(chspec); | |
615 | ||
616 | /* check the chanspec */ | |
3de67818 | 617 | if (brcms_c_chspec_malformed(chspec)) { |
5b435de0 AS |
618 | wiphy_err(wlc->wiphy, "wl%d: malformed chanspec 0x%x\n", |
619 | wlc->pub->unit, chspec); | |
620 | return false; | |
621 | } | |
622 | ||
623 | if (CHANNEL_BANDUNIT(wlc_cm->wlc, channel) != | |
624 | chspec_bandunit(chspec)) | |
625 | return false; | |
626 | ||
853346d8 | 627 | return true; |
5b435de0 AS |
628 | } |
629 | ||
630 | bool brcms_c_valid_chanspec_db(struct brcms_cm_info *wlc_cm, u16 chspec) | |
631 | { | |
853346d8 | 632 | return brcms_c_valid_chanspec_ext(wlc_cm, chspec); |
5b435de0 | 633 | } |
cf03c5da SF |
634 | |
635 | static bool brcms_is_radar_freq(u16 center_freq) | |
636 | { | |
637 | return center_freq >= 5260 && center_freq <= 5700; | |
638 | } | |
639 | ||
640 | static void brcms_reg_apply_radar_flags(struct wiphy *wiphy) | |
641 | { | |
642 | struct ieee80211_supported_band *sband; | |
643 | struct ieee80211_channel *ch; | |
644 | int i; | |
645 | ||
646 | sband = wiphy->bands[IEEE80211_BAND_5GHZ]; | |
647 | if (!sband) | |
648 | return; | |
649 | ||
650 | for (i = 0; i < sband->n_channels; i++) { | |
651 | ch = &sband->channels[i]; | |
652 | ||
653 | if (!brcms_is_radar_freq(ch->center_freq)) | |
654 | continue; | |
655 | ||
656 | /* | |
657 | * All channels in this range should be passive and have | |
658 | * DFS enabled. | |
659 | */ | |
660 | if (!(ch->flags & IEEE80211_CHAN_DISABLED)) | |
661 | ch->flags |= IEEE80211_CHAN_RADAR | | |
662 | IEEE80211_CHAN_NO_IBSS | | |
663 | IEEE80211_CHAN_PASSIVE_SCAN; | |
664 | } | |
665 | } | |
666 | ||
667 | static void | |
668 | brcms_reg_apply_beaconing_flags(struct wiphy *wiphy, | |
669 | enum nl80211_reg_initiator initiator) | |
670 | { | |
671 | struct ieee80211_supported_band *sband; | |
672 | struct ieee80211_channel *ch; | |
673 | const struct ieee80211_reg_rule *rule; | |
674 | int band, i, ret; | |
675 | ||
676 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
677 | sband = wiphy->bands[band]; | |
678 | if (!sband) | |
679 | continue; | |
680 | ||
681 | for (i = 0; i < sband->n_channels; i++) { | |
682 | ch = &sband->channels[i]; | |
683 | ||
684 | if (ch->flags & | |
685 | (IEEE80211_CHAN_DISABLED | IEEE80211_CHAN_RADAR)) | |
686 | continue; | |
687 | ||
688 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) { | |
689 | ret = freq_reg_info(wiphy, ch->center_freq, | |
690 | 0, &rule); | |
691 | if (ret) | |
692 | continue; | |
693 | ||
694 | if (!(rule->flags & NL80211_RRF_NO_IBSS)) | |
695 | ch->flags &= ~IEEE80211_CHAN_NO_IBSS; | |
696 | if (!(rule->flags & NL80211_RRF_PASSIVE_SCAN)) | |
697 | ch->flags &= | |
698 | ~IEEE80211_CHAN_PASSIVE_SCAN; | |
699 | } else if (ch->beacon_found) { | |
700 | ch->flags &= ~(IEEE80211_CHAN_NO_IBSS | | |
701 | IEEE80211_CHAN_PASSIVE_SCAN); | |
702 | } | |
703 | } | |
704 | } | |
705 | } | |
706 | ||
707 | static int brcms_reg_notifier(struct wiphy *wiphy, | |
708 | struct regulatory_request *request) | |
709 | { | |
710 | struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); | |
711 | struct brcms_info *wl = hw->priv; | |
712 | struct brcms_c_info *wlc = wl->wlc; | |
2ab631f4 SF |
713 | struct ieee80211_supported_band *sband; |
714 | struct ieee80211_channel *ch; | |
715 | int band, i; | |
716 | bool ch_found = false; | |
cf03c5da SF |
717 | |
718 | brcms_reg_apply_radar_flags(wiphy); | |
719 | ||
720 | if (request->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) | |
721 | brcms_reg_apply_beaconing_flags(wiphy, request->initiator); | |
722 | ||
2ab631f4 SF |
723 | /* Disable radio if all channels disallowed by regulatory */ |
724 | for (band = 0; !ch_found && band < IEEE80211_NUM_BANDS; band++) { | |
725 | sband = wiphy->bands[band]; | |
726 | if (!sband) | |
727 | continue; | |
728 | ||
729 | for (i = 0; !ch_found && i < sband->n_channels; i++) { | |
730 | ch = &sband->channels[i]; | |
731 | ||
732 | if (!(ch->flags & IEEE80211_CHAN_DISABLED)) | |
733 | ch_found = true; | |
734 | } | |
735 | } | |
736 | ||
737 | if (ch_found) { | |
738 | mboolclr(wlc->pub->radio_disabled, WL_RADIO_COUNTRY_DISABLE); | |
739 | } else { | |
740 | mboolset(wlc->pub->radio_disabled, WL_RADIO_COUNTRY_DISABLE); | |
741 | wiphy_err(wlc->wiphy, "wl%d: %s: no valid channel for \"%s\"\n", | |
742 | wlc->pub->unit, __func__, request->alpha2); | |
743 | } | |
744 | ||
cf03c5da SF |
745 | if (wlc->pub->_nbands > 1 || wlc->band->bandtype == BRCM_BAND_2G) |
746 | wlc_phy_chanspec_ch14_widefilter_set(wlc->band->pi, | |
747 | brcms_c_japan_ccode(request->alpha2)); | |
748 | ||
749 | return 0; | |
750 | } | |
751 | ||
752 | void brcms_c_regd_init(struct brcms_c_info *wlc) | |
753 | { | |
754 | struct wiphy *wiphy = wlc->wiphy; | |
755 | const struct brcms_regd *regd = wlc->cmi->world_regd; | |
756 | struct ieee80211_supported_band *sband; | |
757 | struct ieee80211_channel *ch; | |
758 | struct brcms_chanvec sup_chan; | |
759 | struct brcms_band *band; | |
760 | int band_idx, i; | |
761 | ||
762 | /* Disable any channels not supported by the phy */ | |
32c336a5 AS |
763 | for (band_idx = 0; band_idx < wlc->pub->_nbands; band_idx++) { |
764 | band = wlc->bandstate[band_idx]; | |
c49aa4aa | 765 | |
cf03c5da SF |
766 | wlc_phy_chanspec_band_validch(band->pi, band->bandtype, |
767 | &sup_chan); | |
768 | ||
32c336a5 AS |
769 | if (band_idx == BAND_2G_INDEX) |
770 | sband = wiphy->bands[IEEE80211_BAND_2GHZ]; | |
771 | else | |
772 | sband = wiphy->bands[IEEE80211_BAND_5GHZ]; | |
773 | ||
cf03c5da SF |
774 | for (i = 0; i < sband->n_channels; i++) { |
775 | ch = &sband->channels[i]; | |
776 | if (!isset(sup_chan.vec, ch->hw_value)) | |
777 | ch->flags |= IEEE80211_CHAN_DISABLED; | |
778 | } | |
779 | } | |
780 | ||
781 | wlc->wiphy->reg_notifier = brcms_reg_notifier; | |
782 | wlc->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY | | |
783 | WIPHY_FLAG_STRICT_REGULATORY; | |
784 | wiphy_apply_custom_regulatory(wlc->wiphy, regd->regdomain); | |
785 | brcms_reg_apply_beaconing_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER); | |
786 | } |