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Merge tag 'renesas-fixes3-for-v3.12' of git://git.kernel.org/pub/scm/linux/kernel...
[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, \
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
80static 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 */
97struct 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 */
105struct 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		 110struct brcms_regd {
111 struct country_info country;
112 const struct ieee80211_regdomain *regdomain;
113};
114
5b435de0
AS		 115struct 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 */
124static 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
133static const struct locale_mimo_info *g_mimo_2g_table[] = {
134 &locale_bn
135};
136
137/*
138 * MIMO Locale Definitions - 5 GHz
139 */
140static 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
145static const struct locale_mimo_info *g_mimo_5g_table[] = {
146 &locale_11n
147};
148
cf03c5da
SF		 149static 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		 157static 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
165static 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 */
179static 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 &&
68eed6ee 186 (0x80 & ccode[1]) == 0 && ccode[1] >= 0x41 && ccode[1] <= 0x5A))
94a2ca31
AS		 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 206static 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 221static 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 */
227static 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		 233static void
234brcms_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 */
313static void
cf03c5da
SF		 314brcms_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		 331struct 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 338
5b435de0
AS		 339 wlc_cm = kzalloc(sizeof(struct brcms_cm_info), GFP_ATOMIC);
340 if (wlc_cm == NULL)
341 return NULL;
342 wlc_cm->pub = pub;
343 wlc_cm->wlc = wlc;
344 wlc->cmi = wlc_cm;
345
346 /* store the country code for passing up as a regulatory hint */
cf03c5da
SF		 347 wlc_cm->world_regd = brcms_world_regd(ccode, ccode_len);
348 if (brcms_c_country_valid(ccode))
349 strncpy(wlc->pub->srom_ccode, ccode, ccode_len);
350
351 /*
352 * If no custom world domain is found in the SROM, use the
353 * default "X2" domain.
354 */
355 if (!wlc_cm->world_regd) {
356 wlc_cm->world_regd = brcms_default_world_regd();
357 ccode = wlc_cm->world_regd->regdomain->alpha2;
358 ccode_len = BRCM_CNTRY_BUF_SZ - 1;
359 }
5b435de0 360
5b435de0 361 /* save default country for exiting 11d regulatory mode */
cf03c5da 362 strncpy(wlc->country_default, ccode, ccode_len);
5b435de0
AS		 363
364 /* initialize autocountry_default to driver default */
cf03c5da 365 strncpy(wlc->autocountry_default, ccode, ccode_len);
5b435de0 366
cf03c5da 367 brcms_c_set_country(wlc_cm, wlc_cm->world_regd);
5b435de0
AS		 368
369 return wlc_cm;
370}
371
372void brcms_c_channel_mgr_detach(struct brcms_cm_info *wlc_cm)
373{
374 kfree(wlc_cm);
375}
376
5b435de0
AS		 377void
378brcms_c_channel_set_chanspec(struct brcms_cm_info *wlc_cm, u16 chanspec,
379 u8 local_constraint_qdbm)
380{
381 struct brcms_c_info *wlc = wlc_cm->wlc;
675a0b04 382 struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.chandef.chan;
5b435de0
AS		 383 struct txpwr_limits txpwr;
384
385 brcms_c_channel_reg_limits(wlc_cm, chanspec, &txpwr);
386
387 brcms_c_channel_min_txpower_limits_with_local_constraint(
388 wlc_cm, &txpwr, local_constraint_qdbm
389 );
390
edc7651f 391 /* set or restore gmode as required by regulatory */
7f38e5bc 392 if (ch->flags & IEEE80211_CHAN_NO_OFDM)
edc7651f
SF		 393 brcms_c_set_gmode(wlc, GMODE_LEGACY_B, false);
394 else
395 brcms_c_set_gmode(wlc, wlc->protection->gmode_user, false);
396
5b435de0 397 brcms_b_set_chanspec(wlc->hw, chanspec,
853346d8 398 !!(ch->flags & IEEE80211_CHAN_PASSIVE_SCAN),
5b435de0
AS		 399 &txpwr);
400}
401
5b435de0
AS		 402void
403brcms_c_channel_reg_limits(struct brcms_cm_info *wlc_cm, u16 chanspec,
404 struct txpwr_limits *txpwr)
405{
406 struct brcms_c_info *wlc = wlc_cm->wlc;
675a0b04 407 struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.chandef.chan;
5b435de0
AS		 408 uint i;
409 uint chan;
410 int maxpwr;
411 int delta;
412 const struct country_info *country;
413 struct brcms_band *band;
5b435de0 414 int conducted_max = BRCMS_TXPWR_MAX;
5b435de0
AS		 415 const struct locale_mimo_info *li_mimo;
416 int maxpwr20, maxpwr40;
417 int maxpwr_idx;
418 uint j;
419
420 memset(txpwr, 0, sizeof(struct txpwr_limits));
421
2cf5089e
SF		 422 if (WARN_ON(!ch))
423 return;
424
cf03c5da 425 country = &wlc_cm->world_regd->country;
5b435de0
AS		 426
427 chan = CHSPEC_CHANNEL(chanspec);
428 band = wlc->bandstate[chspec_bandunit(chanspec)];
5b435de0
AS		 429 li_mimo = (band->bandtype == BRCM_BAND_5G) ?
430 brcms_c_get_mimo_5g(country->locale_mimo_5G) :
431 brcms_c_get_mimo_2g(country->locale_mimo_2G);
432
2cf5089e 433 delta = band->antgain;
5b435de0 434
edc7651f 435 if (band->bandtype == BRCM_BAND_2G)
5b435de0 436 conducted_max = QDB(22);
2cf5089e
SF		 437
438 maxpwr = QDB(ch->max_power) - delta;
439 maxpwr = max(maxpwr, 0);
440 maxpwr = min(maxpwr, conducted_max);
5b435de0
AS		 441
442 /* CCK txpwr limits for 2.4G band */
443 if (band->bandtype == BRCM_BAND_2G) {
5b435de0
AS		 444 for (i = 0; i < BRCMS_NUM_RATES_CCK; i++)
445 txpwr->cck[i] = (u8) maxpwr;
446 }
447
2cf5089e 448 for (i = 0; i < BRCMS_NUM_RATES_OFDM; i++) {
5b435de0
AS		 449 txpwr->ofdm[i] = (u8) maxpwr;
450
5b435de0
AS		 451 /*
452 * OFDM 40 MHz SISO has the same power as the corresponding
453 * MCS0-7 rate unless overriden by the locale specific code.
454 * We set this value to 0 as a flag (presumably 0 dBm isn't
455 * a possibility) and then copy the MCS0-7 value to the 40 MHz
456 * value if it wasn't explicitly set.
457 */
458 txpwr->ofdm_40_siso[i] = 0;
459
460 txpwr->ofdm_cdd[i] = (u8) maxpwr;
461
462 txpwr->ofdm_40_cdd[i] = 0;
463 }
464
2cf5089e
SF		 465 delta = 0;
466 if (band->antgain > QDB(6))
467 delta = band->antgain - QDB(6); /* Excess over 6 dB */
5b435de0
AS		 468
469 if (band->bandtype == BRCM_BAND_2G)
470 maxpwr_idx = (chan - 1);
471 else
472 maxpwr_idx = CHANNEL_POWER_IDX_5G(chan);
473
474 maxpwr20 = li_mimo->maxpwr20[maxpwr_idx];
475 maxpwr40 = li_mimo->maxpwr40[maxpwr_idx];
476
477 maxpwr20 = maxpwr20 - delta;
478 maxpwr20 = max(maxpwr20, 0);
479 maxpwr40 = maxpwr40 - delta;
480 maxpwr40 = max(maxpwr40, 0);
481
482 /* Fill in the MCS 0-7 (SISO) rates */
483 for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
484
485 /*
486 * 20 MHz has the same power as the corresponding OFDM rate
487 * unless overriden by the locale specific code.
488 */
489 txpwr->mcs_20_siso[i] = txpwr->ofdm[i];
490 txpwr->mcs_40_siso[i] = 0;
491 }
492
493 /* Fill in the MCS 0-7 CDD rates */
494 for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
495 txpwr->mcs_20_cdd[i] = (u8) maxpwr20;
496 txpwr->mcs_40_cdd[i] = (u8) maxpwr40;
497 }
498
499 /*
500 * These locales have SISO expressed in the
501 * table and override CDD later
502 */
503 if (li_mimo == &locale_bn) {
504 if (li_mimo == &locale_bn) {
505 maxpwr20 = QDB(16);
506 maxpwr40 = 0;
507
508 if (chan >= 3 && chan <= 11)
509 maxpwr40 = QDB(16);
510 }
511
512 for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
513 txpwr->mcs_20_siso[i] = (u8) maxpwr20;
514 txpwr->mcs_40_siso[i] = (u8) maxpwr40;
515 }
516 }
517
518 /* Fill in the MCS 0-7 STBC rates */
519 for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
520 txpwr->mcs_20_stbc[i] = 0;
521 txpwr->mcs_40_stbc[i] = 0;
522 }
523
524 /* Fill in the MCS 8-15 SDM rates */
525 for (i = 0; i < BRCMS_NUM_RATES_MCS_2_STREAM; i++) {
526 txpwr->mcs_20_mimo[i] = (u8) maxpwr20;
527 txpwr->mcs_40_mimo[i] = (u8) maxpwr40;
528 }
529
530 /* Fill in MCS32 */
531 txpwr->mcs32 = (u8) maxpwr40;
532
533 for (i = 0, j = 0; i < BRCMS_NUM_RATES_OFDM; i++, j++) {
534 if (txpwr->ofdm_40_cdd[i] == 0)
535 txpwr->ofdm_40_cdd[i] = txpwr->mcs_40_cdd[j];
536 if (i == 0) {
537 i = i + 1;
538 if (txpwr->ofdm_40_cdd[i] == 0)
539 txpwr->ofdm_40_cdd[i] = txpwr->mcs_40_cdd[j];
540 }
541 }
542
543 /*
544 * Copy the 40 MHZ MCS 0-7 CDD value to the 40 MHZ MCS 0-7 SISO
545 * value if it wasn't provided explicitly.
546 */
547 for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
548 if (txpwr->mcs_40_siso[i] == 0)
549 txpwr->mcs_40_siso[i] = txpwr->mcs_40_cdd[i];
550 }
551
552 for (i = 0, j = 0; i < BRCMS_NUM_RATES_OFDM; i++, j++) {
553 if (txpwr->ofdm_40_siso[i] == 0)
554 txpwr->ofdm_40_siso[i] = txpwr->mcs_40_siso[j];
555 if (i == 0) {
556 i = i + 1;
557 if (txpwr->ofdm_40_siso[i] == 0)
558 txpwr->ofdm_40_siso[i] = txpwr->mcs_40_siso[j];
559 }
560 }
561
562 /*
563 * Copy the 20 and 40 MHz MCS0-7 CDD values to the corresponding
564 * STBC values if they weren't provided explicitly.
565 */
566 for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
567 if (txpwr->mcs_20_stbc[i] == 0)
568 txpwr->mcs_20_stbc[i] = txpwr->mcs_20_cdd[i];
569
570 if (txpwr->mcs_40_stbc[i] == 0)
571 txpwr->mcs_40_stbc[i] = txpwr->mcs_40_cdd[i];
572 }
573
5b435de0
AS		 574 return;
575}
576
3de67818
AB		 577/*
578 * Verify the chanspec is using a legal set of parameters, i.e. that the
579 * chanspec specified a band, bw, ctl_sb and channel and that the
580 * combination could be legal given any set of circumstances.
581 * RETURNS: true is the chanspec is malformed, false if it looks good.
582 */
583static bool brcms_c_chspec_malformed(u16 chanspec)
584{
585 /* must be 2G or 5G band */
586 if (!CHSPEC_IS5G(chanspec) && !CHSPEC_IS2G(chanspec))
587 return true;
588 /* must be 20 or 40 bandwidth */
589 if (!CHSPEC_IS40(chanspec) && !CHSPEC_IS20(chanspec))
590 return true;
591
592 /* 20MHZ b/w must have no ctl sb, 40 must have a ctl sb */
593 if (CHSPEC_IS20(chanspec)) {
594 if (!CHSPEC_SB_NONE(chanspec))
595 return true;
596 } else if (!CHSPEC_SB_UPPER(chanspec) && !CHSPEC_SB_LOWER(chanspec)) {
597 return true;
598 }
599
600 return false;
601}
602
5b435de0
AS		 603/*
604 * Validate the chanspec for this locale, for 40MHZ we need to also
605 * check that the sidebands are valid 20MZH channels in this locale
606 * and they are also a legal HT combination
607 */
608static bool
853346d8 609brcms_c_valid_chanspec_ext(struct brcms_cm_info *wlc_cm, u16 chspec)
5b435de0
AS		 610{
611 struct brcms_c_info *wlc = wlc_cm->wlc;
612 u8 channel = CHSPEC_CHANNEL(chspec);
613
614 /* check the chanspec */
3de67818 615 if (brcms_c_chspec_malformed(chspec)) {
b353dda4
SF		 616 brcms_err(wlc->hw->d11core, "wl%d: malformed chanspec 0x%x\n",
617 wlc->pub->unit, chspec);
5b435de0
AS		 618 return false;
619 }
620
621 if (CHANNEL_BANDUNIT(wlc_cm->wlc, channel) !=
622 chspec_bandunit(chspec))
623 return false;
624
853346d8 625 return true;
5b435de0
AS		 626}
627
628bool brcms_c_valid_chanspec_db(struct brcms_cm_info *wlc_cm, u16 chspec)
629{
853346d8 630 return brcms_c_valid_chanspec_ext(wlc_cm, chspec);
5b435de0 631}
cf03c5da
SF		 632
633static bool brcms_is_radar_freq(u16 center_freq)
634{
635 return center_freq >= 5260 && center_freq <= 5700;
636}
637
638static void brcms_reg_apply_radar_flags(struct wiphy *wiphy)
639{
640 struct ieee80211_supported_band *sband;
641 struct ieee80211_channel *ch;
642 int i;
643
644 sband = wiphy->bands[IEEE80211_BAND_5GHZ];
645 if (!sband)
646 return;
647
648 for (i = 0; i < sband->n_channels; i++) {
649 ch = &sband->channels[i];
650
651 if (!brcms_is_radar_freq(ch->center_freq))
652 continue;
653
654 /*
655 * All channels in this range should be passive and have
656 * DFS enabled.
657 */
658 if (!(ch->flags & IEEE80211_CHAN_DISABLED))
659 ch->flags |= IEEE80211_CHAN_RADAR |
660 IEEE80211_CHAN_NO_IBSS |
661 IEEE80211_CHAN_PASSIVE_SCAN;
662 }
663}
664
665static void
666brcms_reg_apply_beaconing_flags(struct wiphy *wiphy,
667 enum nl80211_reg_initiator initiator)
668{
669 struct ieee80211_supported_band *sband;
670 struct ieee80211_channel *ch;
671 const struct ieee80211_reg_rule *rule;
361c9c8b 672 int band, i;
cf03c5da
SF		 673
674 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
675 sband = wiphy->bands[band];
676 if (!sband)
677 continue;
678
679 for (i = 0; i < sband->n_channels; i++) {
680 ch = &sband->channels[i];
681
682 if (ch->flags &
683 (IEEE80211_CHAN_DISABLED | IEEE80211_CHAN_RADAR))
684 continue;
685
686 if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) {
361c9c8b
JB		 687 rule = freq_reg_info(wiphy, ch->center_freq);
688 if (IS_ERR(rule))
cf03c5da
SF		 689 continue;
690
691 if (!(rule->flags & NL80211_RRF_NO_IBSS))
692 ch->flags &= ~IEEE80211_CHAN_NO_IBSS;
693 if (!(rule->flags & NL80211_RRF_PASSIVE_SCAN))
694 ch->flags &=
695 ~IEEE80211_CHAN_PASSIVE_SCAN;
696 } else if (ch->beacon_found) {
697 ch->flags &= ~(IEEE80211_CHAN_NO_IBSS |
698 IEEE80211_CHAN_PASSIVE_SCAN);
699 }
700 }
701 }
702}
703
0c0280bd
LR		 704static void brcms_reg_notifier(struct wiphy *wiphy,
705 struct regulatory_request *request)
cf03c5da
SF		 706{
707 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
708 struct brcms_info *wl = hw->priv;
709 struct brcms_c_info *wlc = wl->wlc;
2ab631f4
SF		 710 struct ieee80211_supported_band *sband;
711 struct ieee80211_channel *ch;
712 int band, i;
713 bool ch_found = false;
cf03c5da
SF		 714
715 brcms_reg_apply_radar_flags(wiphy);
716
717 if (request->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE)
718 brcms_reg_apply_beaconing_flags(wiphy, request->initiator);
719
2ab631f4
SF		 720 /* Disable radio if all channels disallowed by regulatory */
721 for (band = 0; !ch_found && band < IEEE80211_NUM_BANDS; band++) {
722 sband = wiphy->bands[band];
723 if (!sband)
724 continue;
725
726 for (i = 0; !ch_found && i < sband->n_channels; i++) {
727 ch = &sband->channels[i];
728
729 if (!(ch->flags & IEEE80211_CHAN_DISABLED))
730 ch_found = true;
731 }
732 }
733
734 if (ch_found) {
735 mboolclr(wlc->pub->radio_disabled, WL_RADIO_COUNTRY_DISABLE);
736 } else {
737 mboolset(wlc->pub->radio_disabled, WL_RADIO_COUNTRY_DISABLE);
b353dda4
SF		 738 brcms_err(wlc->hw->d11core,
739 "wl%d: %s: no valid channel for \"%s\"\n",
2ab631f4
SF		 740 wlc->pub->unit, __func__, request->alpha2);
741 }
742
cf03c5da
SF		 743 if (wlc->pub->_nbands > 1 || wlc->band->bandtype == BRCM_BAND_2G)
744 wlc_phy_chanspec_ch14_widefilter_set(wlc->band->pi,
745 brcms_c_japan_ccode(request->alpha2));
cf03c5da
SF		 746}
747
748void brcms_c_regd_init(struct brcms_c_info *wlc)
749{
750 struct wiphy *wiphy = wlc->wiphy;
751 const struct brcms_regd *regd = wlc->cmi->world_regd;
752 struct ieee80211_supported_band *sband;
753 struct ieee80211_channel *ch;
754 struct brcms_chanvec sup_chan;
755 struct brcms_band *band;
756 int band_idx, i;
757
758 /* Disable any channels not supported by the phy */
32c336a5
AS		 759 for (band_idx = 0; band_idx < wlc->pub->_nbands; band_idx++) {
760 band = wlc->bandstate[band_idx];
c49aa4aa 761
cf03c5da
SF		 762 wlc_phy_chanspec_band_validch(band->pi, band->bandtype,
763 &sup_chan);
764
32c336a5
AS		 765 if (band_idx == BAND_2G_INDEX)
766 sband = wiphy->bands[IEEE80211_BAND_2GHZ];
767 else
768 sband = wiphy->bands[IEEE80211_BAND_5GHZ];
769
cf03c5da
SF		 770 for (i = 0; i < sband->n_channels; i++) {
771 ch = &sband->channels[i];
772 if (!isset(sup_chan.vec, ch->hw_value))
773 ch->flags |= IEEE80211_CHAN_DISABLED;
774 }
775 }
776
777 wlc->wiphy->reg_notifier = brcms_reg_notifier;
778 wlc->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
779 WIPHY_FLAG_STRICT_REGULATORY;
780 wiphy_apply_custom_regulatory(wlc->wiphy, regd->regdomain);
781 brcms_reg_apply_beaconing_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER);
782}
Linux kernel - Deliverables
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