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b43legacy: move under broadcom vendor directory
[deliverable/linux.git] / drivers / net / wireless / brcm80211 / brcmsmac / channel.c
CommitLineData
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, \
8fe02e16 62 NL80211_RRF_NO_IR)
cf03c5da
SF		 63
64#define BRCM_5GHZ_5180_5240 REG_RULE(5180-10, 5240+10, 40, 0, 21, \
8fe02e16 65 NL80211_RRF_NO_IR)
cf03c5da 66#define BRCM_5GHZ_5260_5320 REG_RULE(5260-10, 5320+10, 40, 0, 21, \
cf03c5da 67 NL80211_RRF_DFS | \
8fe02e16 68 NL80211_RRF_NO_IR)
cf03c5da 69#define BRCM_5GHZ_5500_5700 REG_RULE(5500-10, 5700+10, 40, 0, 21, \
cf03c5da 70 NL80211_RRF_DFS | \
8fe02e16 71 NL80211_RRF_NO_IR)
cf03c5da 72#define BRCM_5GHZ_5745_5825 REG_RULE(5745-10, 5825+10, 40, 0, 21, \
8fe02e16 73 NL80211_RRF_NO_IR)
cf03c5da
SF		 74
75static const struct ieee80211_regdomain brcms_regdom_x2 = {
8a096148 76 .n_reg_rules = 6,
cf03c5da
SF		 77 .alpha2 = "X2",
78 .reg_rules = {
79 BRCM_2GHZ_2412_2462,
80 BRCM_2GHZ_2467_2472,
81 BRCM_5GHZ_5180_5240,
82 BRCM_5GHZ_5260_5320,
83 BRCM_5GHZ_5500_5700,
84 BRCM_5GHZ_5745_5825,
85 }
86};
87
5b435de0
AS		 88 /* locale per-channel tx power limits for MIMO frames
89 * maxpwr arrays are index by channel for 2.4 GHz limits, and
90 * by sub-band for 5 GHz limits using CHANNEL_POWER_IDX_5G(channel)
91 */
92struct locale_mimo_info {
93 /* tx 20 MHz power limits, qdBm units */
94 s8 maxpwr20[BRCMS_MAXPWR_MIMO_TBL_SIZE];
95 /* tx 40 MHz power limits, qdBm units */
96 s8 maxpwr40[BRCMS_MAXPWR_MIMO_TBL_SIZE];
5b435de0
AS		 97};
98
99/* Country names and abbreviations with locale defined from ISO 3166 */
100struct country_info {
5b435de0
AS		 101 const u8 locale_mimo_2G; /* 2.4G mimo info */
102 const u8 locale_mimo_5G; /* 5G mimo info */
103};
104
cf03c5da
SF		 105struct brcms_regd {
106 struct country_info country;
107 const struct ieee80211_regdomain *regdomain;
108};
109
5b435de0
AS		 110struct brcms_cm_info {
111 struct brcms_pub *pub;
112 struct brcms_c_info *wlc;
cf03c5da 113 const struct brcms_regd *world_regd;
5b435de0
AS		 114};
115
116/*
117 * MIMO Locale Definitions - 2.4 GHz
118 */
119static const struct locale_mimo_info locale_bn = {
120 {QDB(13), QDB(13), QDB(13), QDB(13), QDB(13),
121 QDB(13), QDB(13), QDB(13), QDB(13), QDB(13),
122 QDB(13), QDB(13), QDB(13)},
123 {0, 0, QDB(13), QDB(13), QDB(13),
124 QDB(13), QDB(13), QDB(13), QDB(13), QDB(13),
125 QDB(13), 0, 0},
5b435de0
AS		 126};
127
128static const struct locale_mimo_info *g_mimo_2g_table[] = {
129 &locale_bn
130};
131
132/*
133 * MIMO Locale Definitions - 5 GHz
134 */
135static const struct locale_mimo_info locale_11n = {
136 { /* 12.5 dBm */ 50, 50, 50, QDB(15), QDB(15)},
137 {QDB(14), QDB(15), QDB(15), QDB(15), QDB(15)},
5b435de0
AS		 138};
139
140static const struct locale_mimo_info *g_mimo_5g_table[] = {
141 &locale_11n
142};
143
cf03c5da
SF		 144static const struct brcms_regd cntry_locales[] = {
145 /* Worldwide RoW 2, must always be at index 0 */
5b435de0 146 {
edc7651f 147 .country = LOCALES(bn, 11n),
cf03c5da
SF		 148 .regdomain = &brcms_regdom_x2,
149 },
5b435de0
AS		 150};
151
5b435de0
AS		 152static const struct locale_mimo_info *brcms_c_get_mimo_2g(u8 locale_idx)
153{
154 if (locale_idx >= ARRAY_SIZE(g_mimo_2g_table))
155 return NULL;
156
157 return g_mimo_2g_table[locale_idx];
158}
159
160static const struct locale_mimo_info *brcms_c_get_mimo_5g(u8 locale_idx)
161{
162 if (locale_idx >= ARRAY_SIZE(g_mimo_5g_table))
163 return NULL;
164
165 return g_mimo_5g_table[locale_idx];
166}
167
94a2ca31
AS		 168/*
169 * Indicates whether the country provided is valid to pass
170 * to cfg80211 or not.
171 *
172 * returns true if valid; false if not.
173 */
174static bool brcms_c_country_valid(const char *ccode)
175{
176 /*
177 * only allow ascii alpha uppercase for the first 2
178 * chars.
179 */
180 if (!((0x80 & ccode[0]) == 0 && ccode[0] >= 0x41 && ccode[0] <= 0x5A &&
68eed6ee 181 (0x80 & ccode[1]) == 0 && ccode[1] >= 0x41 && ccode[1] <= 0x5A))
94a2ca31
AS		 182 return false;
183
184 /*
185 * do not match ISO 3166-1 user assigned country codes
186 * that may be in the driver table
187 */
188 if (!strcmp("AA", ccode) || /* AA */
189 !strcmp("ZZ", ccode) || /* ZZ */
190 ccode[0] == 'X' || /* XA - XZ */
191 (ccode[0] == 'Q' && /* QM - QZ */
192 (ccode[1] >= 'M' && ccode[1] <= 'Z')))
193 return false;
194
195 if (!strcmp("NA", ccode))
196 return false;
197
198 return true;
199}
200
cf03c5da 201static const struct brcms_regd *brcms_world_regd(const char *regdom, int len)
5b435de0 202{
cf03c5da
SF		 203 const struct brcms_regd *regd = NULL;
204 int i;
5b435de0 205
cf03c5da
SF		 206 for (i = 0; i < ARRAY_SIZE(cntry_locales); i++) {
207 if (!strncmp(regdom, cntry_locales[i].regdomain->alpha2, len)) {
208 regd = &cntry_locales[i];
209 break;
210 }
5b435de0
AS		 211 }
212
cf03c5da 213 return regd;
5b435de0
AS		 214}
215
cf03c5da 216static const struct brcms_regd *brcms_default_world_regd(void)
5b435de0 217{
cf03c5da 218 return &cntry_locales[0];
5b435de0
AS		 219}
220
5b435de0
AS		 221/* JP, J1 - J10 are Japan ccodes */
222static bool brcms_c_japan_ccode(const char *ccode)
223{
224 return (ccode[0] == 'J' &&
225 (ccode[1] == 'P' || (ccode[1] >= '1' && ccode[1] <= '9')));
226}
227
5b435de0
AS		 228static void
229brcms_c_channel_min_txpower_limits_with_local_constraint(
230 struct brcms_cm_info *wlc_cm, struct txpwr_limits *txpwr,
231 u8 local_constraint_qdbm)
232{
233 int j;
234
235 /* CCK Rates */
236 for (j = 0; j < WL_TX_POWER_CCK_NUM; j++)
237 txpwr->cck[j] = min(txpwr->cck[j], local_constraint_qdbm);
238
239 /* 20 MHz Legacy OFDM SISO */
240 for (j = 0; j < WL_TX_POWER_OFDM_NUM; j++)
241 txpwr->ofdm[j] = min(txpwr->ofdm[j], local_constraint_qdbm);
242
243 /* 20 MHz Legacy OFDM CDD */
244 for (j = 0; j < BRCMS_NUM_RATES_OFDM; j++)
245 txpwr->ofdm_cdd[j] =
246 min(txpwr->ofdm_cdd[j], local_constraint_qdbm);
247
248 /* 40 MHz Legacy OFDM SISO */
249 for (j = 0; j < BRCMS_NUM_RATES_OFDM; j++)
250 txpwr->ofdm_40_siso[j] =
251 min(txpwr->ofdm_40_siso[j], local_constraint_qdbm);
252
253 /* 40 MHz Legacy OFDM CDD */
254 for (j = 0; j < BRCMS_NUM_RATES_OFDM; j++)
255 txpwr->ofdm_40_cdd[j] =
256 min(txpwr->ofdm_40_cdd[j], local_constraint_qdbm);
257
258 /* 20MHz MCS 0-7 SISO */
259 for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++)
260 txpwr->mcs_20_siso[j] =
261 min(txpwr->mcs_20_siso[j], local_constraint_qdbm);
262
263 /* 20MHz MCS 0-7 CDD */
264 for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++)
265 txpwr->mcs_20_cdd[j] =
266 min(txpwr->mcs_20_cdd[j], local_constraint_qdbm);
267
268 /* 20MHz MCS 0-7 STBC */
269 for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++)
270 txpwr->mcs_20_stbc[j] =
271 min(txpwr->mcs_20_stbc[j], local_constraint_qdbm);
272
273 /* 20MHz MCS 8-15 MIMO */
274 for (j = 0; j < BRCMS_NUM_RATES_MCS_2_STREAM; j++)
275 txpwr->mcs_20_mimo[j] =
276 min(txpwr->mcs_20_mimo[j], local_constraint_qdbm);
277
278 /* 40MHz MCS 0-7 SISO */
279 for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++)
280 txpwr->mcs_40_siso[j] =
281 min(txpwr->mcs_40_siso[j], local_constraint_qdbm);
282
283 /* 40MHz MCS 0-7 CDD */
284 for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++)
285 txpwr->mcs_40_cdd[j] =
286 min(txpwr->mcs_40_cdd[j], local_constraint_qdbm);
287
288 /* 40MHz MCS 0-7 STBC */
289 for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++)
290 txpwr->mcs_40_stbc[j] =
291 min(txpwr->mcs_40_stbc[j], local_constraint_qdbm);
292
293 /* 40MHz MCS 8-15 MIMO */
294 for (j = 0; j < BRCMS_NUM_RATES_MCS_2_STREAM; j++)
295 txpwr->mcs_40_mimo[j] =
296 min(txpwr->mcs_40_mimo[j], local_constraint_qdbm);
297
298 /* 40MHz MCS 32 */
299 txpwr->mcs32 = min(txpwr->mcs32, local_constraint_qdbm);
300
301}
302
5b435de0
AS		 303/*
304 * set the driver's current country and regulatory information
305 * using a country code as the source. Look up built in country
306 * information found with the country code.
307 */
308static void
cf03c5da
SF		 309brcms_c_set_country(struct brcms_cm_info *wlc_cm,
310 const struct brcms_regd *regd)
5b435de0 311{
5b435de0 312 struct brcms_c_info *wlc = wlc_cm->wlc;
5b435de0 313
5b435de0
AS		 314 if ((wlc->pub->_n_enab & SUPPORT_11N) !=
315 wlc->protection->nmode_user)
316 brcms_c_set_nmode(wlc);
317
318 brcms_c_stf_ss_update(wlc, wlc->bandstate[BAND_2G_INDEX]);
319 brcms_c_stf_ss_update(wlc, wlc->bandstate[BAND_5G_INDEX]);
5b435de0 320
edc7651f 321 brcms_c_set_gmode(wlc, wlc->protection->gmode_user, false);
5b435de0
AS		 322
323 return;
324}
325
5b435de0
AS		 326struct brcms_cm_info *brcms_c_channel_mgr_attach(struct brcms_c_info *wlc)
327{
328 struct brcms_cm_info *wlc_cm;
5b435de0 329 struct brcms_pub *pub = wlc->pub;
898d3c3b 330 struct ssb_sprom *sprom = &wlc->hw->d11core->bus->sprom;
cf03c5da
SF		 331 const char *ccode = sprom->alpha2;
332 int ccode_len = sizeof(sprom->alpha2);
5b435de0 333
5b435de0
AS		 334 wlc_cm = kzalloc(sizeof(struct brcms_cm_info), GFP_ATOMIC);
335 if (wlc_cm == NULL)
336 return NULL;
337 wlc_cm->pub = pub;
338 wlc_cm->wlc = wlc;
339 wlc->cmi = wlc_cm;
340
341 /* store the country code for passing up as a regulatory hint */
cf03c5da
SF		 342 wlc_cm->world_regd = brcms_world_regd(ccode, ccode_len);
343 if (brcms_c_country_valid(ccode))
344 strncpy(wlc->pub->srom_ccode, ccode, ccode_len);
345
346 /*
347 * If no custom world domain is found in the SROM, use the
348 * default "X2" domain.
349 */
350 if (!wlc_cm->world_regd) {
351 wlc_cm->world_regd = brcms_default_world_regd();
352 ccode = wlc_cm->world_regd->regdomain->alpha2;
353 ccode_len = BRCM_CNTRY_BUF_SZ - 1;
354 }
5b435de0 355
5b435de0 356 /* save default country for exiting 11d regulatory mode */
cf03c5da 357 strncpy(wlc->country_default, ccode, ccode_len);
5b435de0
AS		 358
359 /* initialize autocountry_default to driver default */
cf03c5da 360 strncpy(wlc->autocountry_default, ccode, ccode_len);
5b435de0 361
cf03c5da 362 brcms_c_set_country(wlc_cm, wlc_cm->world_regd);
5b435de0
AS		 363
364 return wlc_cm;
365}
366
367void brcms_c_channel_mgr_detach(struct brcms_cm_info *wlc_cm)
368{
369 kfree(wlc_cm);
370}
371
5b435de0
AS		 372void
373brcms_c_channel_set_chanspec(struct brcms_cm_info *wlc_cm, u16 chanspec,
374 u8 local_constraint_qdbm)
375{
376 struct brcms_c_info *wlc = wlc_cm->wlc;
675a0b04 377 struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.chandef.chan;
5b435de0
AS		 378 struct txpwr_limits txpwr;
379
380 brcms_c_channel_reg_limits(wlc_cm, chanspec, &txpwr);
381
382 brcms_c_channel_min_txpower_limits_with_local_constraint(
383 wlc_cm, &txpwr, local_constraint_qdbm
384 );
385
edc7651f 386 /* set or restore gmode as required by regulatory */
7f38e5bc 387 if (ch->flags & IEEE80211_CHAN_NO_OFDM)
edc7651f
SF		 388 brcms_c_set_gmode(wlc, GMODE_LEGACY_B, false);
389 else
390 brcms_c_set_gmode(wlc, wlc->protection->gmode_user, false);
391
5b435de0 392 brcms_b_set_chanspec(wlc->hw, chanspec,
8fe02e16 393 !!(ch->flags & IEEE80211_CHAN_NO_IR),
5b435de0
AS		 394 &txpwr);
395}
396
5b435de0
AS		 397void
398brcms_c_channel_reg_limits(struct brcms_cm_info *wlc_cm, u16 chanspec,
399 struct txpwr_limits *txpwr)
400{
401 struct brcms_c_info *wlc = wlc_cm->wlc;
675a0b04 402 struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.chandef.chan;
5b435de0
AS		 403 uint i;
404 uint chan;
405 int maxpwr;
406 int delta;
407 const struct country_info *country;
408 struct brcms_band *band;
5b435de0 409 int conducted_max = BRCMS_TXPWR_MAX;
5b435de0
AS		 410 const struct locale_mimo_info *li_mimo;
411 int maxpwr20, maxpwr40;
412 int maxpwr_idx;
413 uint j;
414
415 memset(txpwr, 0, sizeof(struct txpwr_limits));
416
2cf5089e
SF		 417 if (WARN_ON(!ch))
418 return;
419
cf03c5da 420 country = &wlc_cm->world_regd->country;
5b435de0
AS		 421
422 chan = CHSPEC_CHANNEL(chanspec);
423 band = wlc->bandstate[chspec_bandunit(chanspec)];
5b435de0
AS		 424 li_mimo = (band->bandtype == BRCM_BAND_5G) ?
425 brcms_c_get_mimo_5g(country->locale_mimo_5G) :
426 brcms_c_get_mimo_2g(country->locale_mimo_2G);
427
2cf5089e 428 delta = band->antgain;
5b435de0 429
edc7651f 430 if (band->bandtype == BRCM_BAND_2G)
5b435de0 431 conducted_max = QDB(22);
2cf5089e
SF		 432
433 maxpwr = QDB(ch->max_power) - delta;
434 maxpwr = max(maxpwr, 0);
435 maxpwr = min(maxpwr, conducted_max);
5b435de0
AS		 436
437 /* CCK txpwr limits for 2.4G band */
438 if (band->bandtype == BRCM_BAND_2G) {
5b435de0
AS		 439 for (i = 0; i < BRCMS_NUM_RATES_CCK; i++)
440 txpwr->cck[i] = (u8) maxpwr;
441 }
442
2cf5089e 443 for (i = 0; i < BRCMS_NUM_RATES_OFDM; i++) {
5b435de0
AS		 444 txpwr->ofdm[i] = (u8) maxpwr;
445
5b435de0
AS		 446 /*
447 * OFDM 40 MHz SISO has the same power as the corresponding
448 * MCS0-7 rate unless overriden by the locale specific code.
449 * We set this value to 0 as a flag (presumably 0 dBm isn't
450 * a possibility) and then copy the MCS0-7 value to the 40 MHz
451 * value if it wasn't explicitly set.
452 */
453 txpwr->ofdm_40_siso[i] = 0;
454
455 txpwr->ofdm_cdd[i] = (u8) maxpwr;
456
457 txpwr->ofdm_40_cdd[i] = 0;
458 }
459
2cf5089e
SF		 460 delta = 0;
461 if (band->antgain > QDB(6))
462 delta = band->antgain - QDB(6); /* Excess over 6 dB */
5b435de0
AS		 463
464 if (band->bandtype == BRCM_BAND_2G)
465 maxpwr_idx = (chan - 1);
466 else
467 maxpwr_idx = CHANNEL_POWER_IDX_5G(chan);
468
469 maxpwr20 = li_mimo->maxpwr20[maxpwr_idx];
470 maxpwr40 = li_mimo->maxpwr40[maxpwr_idx];
471
472 maxpwr20 = maxpwr20 - delta;
473 maxpwr20 = max(maxpwr20, 0);
474 maxpwr40 = maxpwr40 - delta;
475 maxpwr40 = max(maxpwr40, 0);
476
477 /* Fill in the MCS 0-7 (SISO) rates */
478 for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
479
480 /*
481 * 20 MHz has the same power as the corresponding OFDM rate
482 * unless overriden by the locale specific code.
483 */
484 txpwr->mcs_20_siso[i] = txpwr->ofdm[i];
485 txpwr->mcs_40_siso[i] = 0;
486 }
487
488 /* Fill in the MCS 0-7 CDD rates */
489 for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
490 txpwr->mcs_20_cdd[i] = (u8) maxpwr20;
491 txpwr->mcs_40_cdd[i] = (u8) maxpwr40;
492 }
493
494 /*
495 * These locales have SISO expressed in the
496 * table and override CDD later
497 */
498 if (li_mimo == &locale_bn) {
499 if (li_mimo == &locale_bn) {
500 maxpwr20 = QDB(16);
501 maxpwr40 = 0;
502
503 if (chan >= 3 && chan <= 11)
504 maxpwr40 = QDB(16);
505 }
506
507 for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
508 txpwr->mcs_20_siso[i] = (u8) maxpwr20;
509 txpwr->mcs_40_siso[i] = (u8) maxpwr40;
510 }
511 }
512
513 /* Fill in the MCS 0-7 STBC rates */
514 for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
515 txpwr->mcs_20_stbc[i] = 0;
516 txpwr->mcs_40_stbc[i] = 0;
517 }
518
519 /* Fill in the MCS 8-15 SDM rates */
520 for (i = 0; i < BRCMS_NUM_RATES_MCS_2_STREAM; i++) {
521 txpwr->mcs_20_mimo[i] = (u8) maxpwr20;
522 txpwr->mcs_40_mimo[i] = (u8) maxpwr40;
523 }
524
525 /* Fill in MCS32 */
526 txpwr->mcs32 = (u8) maxpwr40;
527
528 for (i = 0, j = 0; i < BRCMS_NUM_RATES_OFDM; i++, j++) {
529 if (txpwr->ofdm_40_cdd[i] == 0)
530 txpwr->ofdm_40_cdd[i] = txpwr->mcs_40_cdd[j];
531 if (i == 0) {
532 i = i + 1;
533 if (txpwr->ofdm_40_cdd[i] == 0)
534 txpwr->ofdm_40_cdd[i] = txpwr->mcs_40_cdd[j];
535 }
536 }
537
538 /*
539 * Copy the 40 MHZ MCS 0-7 CDD value to the 40 MHZ MCS 0-7 SISO
540 * value if it wasn't provided explicitly.
541 */
542 for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
543 if (txpwr->mcs_40_siso[i] == 0)
544 txpwr->mcs_40_siso[i] = txpwr->mcs_40_cdd[i];
545 }
546
547 for (i = 0, j = 0; i < BRCMS_NUM_RATES_OFDM; i++, j++) {
548 if (txpwr->ofdm_40_siso[i] == 0)
549 txpwr->ofdm_40_siso[i] = txpwr->mcs_40_siso[j];
550 if (i == 0) {
551 i = i + 1;
552 if (txpwr->ofdm_40_siso[i] == 0)
553 txpwr->ofdm_40_siso[i] = txpwr->mcs_40_siso[j];
554 }
555 }
556
557 /*
558 * Copy the 20 and 40 MHz MCS0-7 CDD values to the corresponding
559 * STBC values if they weren't provided explicitly.
560 */
561 for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
562 if (txpwr->mcs_20_stbc[i] == 0)
563 txpwr->mcs_20_stbc[i] = txpwr->mcs_20_cdd[i];
564
565 if (txpwr->mcs_40_stbc[i] == 0)
566 txpwr->mcs_40_stbc[i] = txpwr->mcs_40_cdd[i];
567 }
568
5b435de0
AS		 569 return;
570}
571
3de67818
AB		 572/*
573 * Verify the chanspec is using a legal set of parameters, i.e. that the
574 * chanspec specified a band, bw, ctl_sb and channel and that the
575 * combination could be legal given any set of circumstances.
576 * RETURNS: true is the chanspec is malformed, false if it looks good.
577 */
578static bool brcms_c_chspec_malformed(u16 chanspec)
579{
580 /* must be 2G or 5G band */
581 if (!CHSPEC_IS5G(chanspec) && !CHSPEC_IS2G(chanspec))
582 return true;
583 /* must be 20 or 40 bandwidth */
584 if (!CHSPEC_IS40(chanspec) && !CHSPEC_IS20(chanspec))
585 return true;
586
587 /* 20MHZ b/w must have no ctl sb, 40 must have a ctl sb */
588 if (CHSPEC_IS20(chanspec)) {
589 if (!CHSPEC_SB_NONE(chanspec))
590 return true;
591 } else if (!CHSPEC_SB_UPPER(chanspec) && !CHSPEC_SB_LOWER(chanspec)) {
592 return true;
593 }
594
595 return false;
596}
597
5b435de0
AS		 598/*
599 * Validate the chanspec for this locale, for 40MHZ we need to also
600 * check that the sidebands are valid 20MZH channels in this locale
601 * and they are also a legal HT combination
602 */
603static bool
853346d8 604brcms_c_valid_chanspec_ext(struct brcms_cm_info *wlc_cm, u16 chspec)
5b435de0
AS		 605{
606 struct brcms_c_info *wlc = wlc_cm->wlc;
607 u8 channel = CHSPEC_CHANNEL(chspec);
608
609 /* check the chanspec */
3de67818 610 if (brcms_c_chspec_malformed(chspec)) {
b353dda4
SF		 611 brcms_err(wlc->hw->d11core, "wl%d: malformed chanspec 0x%x\n",
612 wlc->pub->unit, chspec);
5b435de0
AS		 613 return false;
614 }
615
616 if (CHANNEL_BANDUNIT(wlc_cm->wlc, channel) !=
617 chspec_bandunit(chspec))
618 return false;
619
853346d8 620 return true;
5b435de0
AS		 621}
622
623bool brcms_c_valid_chanspec_db(struct brcms_cm_info *wlc_cm, u16 chspec)
624{
853346d8 625 return brcms_c_valid_chanspec_ext(wlc_cm, chspec);
5b435de0 626}
cf03c5da
SF		 627
628static bool brcms_is_radar_freq(u16 center_freq)
629{
630 return center_freq >= 5260 && center_freq <= 5700;
631}
632
633static void brcms_reg_apply_radar_flags(struct wiphy *wiphy)
634{
635 struct ieee80211_supported_band *sband;
636 struct ieee80211_channel *ch;
637 int i;
638
639 sband = wiphy->bands[IEEE80211_BAND_5GHZ];
640 if (!sband)
641 return;
642
643 for (i = 0; i < sband->n_channels; i++) {
644 ch = &sband->channels[i];
645
646 if (!brcms_is_radar_freq(ch->center_freq))
647 continue;
648
649 /*
650 * All channels in this range should be passive and have
651 * DFS enabled.
652 */
653 if (!(ch->flags & IEEE80211_CHAN_DISABLED))
654 ch->flags |= IEEE80211_CHAN_RADAR |
8fe02e16
LR		 655 IEEE80211_CHAN_NO_IR |
656 IEEE80211_CHAN_NO_IR;
cf03c5da
SF		 657 }
658}
659
660static void
661brcms_reg_apply_beaconing_flags(struct wiphy *wiphy,
662 enum nl80211_reg_initiator initiator)
663{
664 struct ieee80211_supported_band *sband;
665 struct ieee80211_channel *ch;
666 const struct ieee80211_reg_rule *rule;
361c9c8b 667 int band, i;
cf03c5da
SF		 668
669 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
670 sband = wiphy->bands[band];
671 if (!sband)
672 continue;
673
674 for (i = 0; i < sband->n_channels; i++) {
675 ch = &sband->channels[i];
676
677 if (ch->flags &
678 (IEEE80211_CHAN_DISABLED | IEEE80211_CHAN_RADAR))
679 continue;
680
681 if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) {
685cc471
LR		 682 rule = freq_reg_info(wiphy,
683 MHZ_TO_KHZ(ch->center_freq));
361c9c8b 684 if (IS_ERR(rule))
cf03c5da
SF		 685 continue;
686
8fe02e16
LR		 687 if (!(rule->flags & NL80211_RRF_NO_IR))
688 ch->flags &= ~IEEE80211_CHAN_NO_IR;
cf03c5da 689 } else if (ch->beacon_found) {
8fe02e16 690 ch->flags &= ~IEEE80211_CHAN_NO_IR;
cf03c5da
SF		 691 }
692 }
693 }
694}
695
0c0280bd
LR		 696static void brcms_reg_notifier(struct wiphy *wiphy,
697 struct regulatory_request *request)
cf03c5da
SF		 698{
699 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
700 struct brcms_info *wl = hw->priv;
701 struct brcms_c_info *wlc = wl->wlc;
2ab631f4
SF		 702 struct ieee80211_supported_band *sband;
703 struct ieee80211_channel *ch;
704 int band, i;
705 bool ch_found = false;
cf03c5da
SF		 706
707 brcms_reg_apply_radar_flags(wiphy);
708
709 if (request->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE)
710 brcms_reg_apply_beaconing_flags(wiphy, request->initiator);
711
2ab631f4
SF		 712 /* Disable radio if all channels disallowed by regulatory */
713 for (band = 0; !ch_found && band < IEEE80211_NUM_BANDS; band++) {
714 sband = wiphy->bands[band];
715 if (!sband)
716 continue;
717
718 for (i = 0; !ch_found && i < sband->n_channels; i++) {
719 ch = &sband->channels[i];
720
721 if (!(ch->flags & IEEE80211_CHAN_DISABLED))
722 ch_found = true;
723 }
724 }
725
726 if (ch_found) {
727 mboolclr(wlc->pub->radio_disabled, WL_RADIO_COUNTRY_DISABLE);
728 } else {
729 mboolset(wlc->pub->radio_disabled, WL_RADIO_COUNTRY_DISABLE);
b353dda4
SF		 730 brcms_err(wlc->hw->d11core,
731 "wl%d: %s: no valid channel for \"%s\"\n",
2ab631f4
SF		 732 wlc->pub->unit, __func__, request->alpha2);
733 }
734
cf03c5da
SF		 735 if (wlc->pub->_nbands > 1 || wlc->band->bandtype == BRCM_BAND_2G)
736 wlc_phy_chanspec_ch14_widefilter_set(wlc->band->pi,
737 brcms_c_japan_ccode(request->alpha2));
cf03c5da
SF		 738}
739
740void brcms_c_regd_init(struct brcms_c_info *wlc)
741{
742 struct wiphy *wiphy = wlc->wiphy;
743 const struct brcms_regd *regd = wlc->cmi->world_regd;
744 struct ieee80211_supported_band *sband;
745 struct ieee80211_channel *ch;
746 struct brcms_chanvec sup_chan;
747 struct brcms_band *band;
748 int band_idx, i;
749
750 /* Disable any channels not supported by the phy */
32c336a5
AS		 751 for (band_idx = 0; band_idx < wlc->pub->_nbands; band_idx++) {
752 band = wlc->bandstate[band_idx];
c49aa4aa 753
cf03c5da
SF		 754 wlc_phy_chanspec_band_validch(band->pi, band->bandtype,
755 &sup_chan);
756
32c336a5
AS		 757 if (band_idx == BAND_2G_INDEX)
758 sband = wiphy->bands[IEEE80211_BAND_2GHZ];
759 else
760 sband = wiphy->bands[IEEE80211_BAND_5GHZ];
761
cf03c5da
SF		 762 for (i = 0; i < sband->n_channels; i++) {
763 ch = &sband->channels[i];
764 if (!isset(sup_chan.vec, ch->hw_value))
765 ch->flags |= IEEE80211_CHAN_DISABLED;
766 }
767 }
768
769 wlc->wiphy->reg_notifier = brcms_reg_notifier;
a2f73b6c
LR		 770 wlc->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
771 REGULATORY_STRICT_REG;
cf03c5da
SF		 772 wiphy_apply_custom_regulatory(wlc->wiphy, regd->regdomain);
773 brcms_reg_apply_beaconing_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER);
774}
Linux kernel - Deliverables
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