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1/*2 * Copyright (c) 2010 Broadcom Corporation3 *4 * Permission to use, copy, modify, and/or distribute this software for any5 * purpose with or without fee is hereby granted, provided that the above6 * copyright notice and this permission notice appear in all copies.7 *8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.15 */16 17#include <brcmu_wifi.h>18#include <brcmu_utils.h>19 20#include "d11.h"21#include "pub.h"22#include "rate.h"23 24/*25 * Rate info per rate: It tells whether a rate is ofdm or not and its phy_rate26 * value27 */28const u8 rate_info[BRCM_MAXRATE + 1] = {29 /* 0 1 2 3 4 5 6 7 8 9 */30/* 0 */ 0x00, 0x00, 0x0a, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00,31/* 10 */ 0x00, 0x37, 0x8b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8f, 0x00,32/* 20 */ 0x00, 0x00, 0x6e, 0x00, 0x8a, 0x00, 0x00, 0x00, 0x00, 0x00,33/* 30 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8e, 0x00, 0x00, 0x00,34/* 40 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x89, 0x00,35/* 50 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,36/* 60 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,37/* 70 */ 0x00, 0x00, 0x8d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,38/* 80 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,39/* 90 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x88, 0x00, 0x00, 0x00,40/* 100 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8c41};42 43/* rates are in units of Kbps */44const struct brcms_mcs_info mcs_table[MCS_TABLE_SIZE] = {45 /* MCS 0: SS 1, MOD: BPSK, CR 1/2 */46 {6500, 13500, CEIL(6500 * 10, 9), CEIL(13500 * 10, 9), 0x00,47 BRCM_RATE_6M},48 /* MCS 1: SS 1, MOD: QPSK, CR 1/2 */49 {13000, 27000, CEIL(13000 * 10, 9), CEIL(27000 * 10, 9), 0x08,50 BRCM_RATE_12M},51 /* MCS 2: SS 1, MOD: QPSK, CR 3/4 */52 {19500, 40500, CEIL(19500 * 10, 9), CEIL(40500 * 10, 9), 0x0A,53 BRCM_RATE_18M},54 /* MCS 3: SS 1, MOD: 16QAM, CR 1/2 */55 {26000, 54000, CEIL(26000 * 10, 9), CEIL(54000 * 10, 9), 0x10,56 BRCM_RATE_24M},57 /* MCS 4: SS 1, MOD: 16QAM, CR 3/4 */58 {39000, 81000, CEIL(39000 * 10, 9), CEIL(81000 * 10, 9), 0x12,59 BRCM_RATE_36M},60 /* MCS 5: SS 1, MOD: 64QAM, CR 2/3 */61 {52000, 108000, CEIL(52000 * 10, 9), CEIL(108000 * 10, 9), 0x19,62 BRCM_RATE_48M},63 /* MCS 6: SS 1, MOD: 64QAM, CR 3/4 */64 {58500, 121500, CEIL(58500 * 10, 9), CEIL(121500 * 10, 9), 0x1A,65 BRCM_RATE_54M},66 /* MCS 7: SS 1, MOD: 64QAM, CR 5/6 */67 {65000, 135000, CEIL(65000 * 10, 9), CEIL(135000 * 10, 9), 0x1C,68 BRCM_RATE_54M},69 /* MCS 8: SS 2, MOD: BPSK, CR 1/2 */70 {13000, 27000, CEIL(13000 * 10, 9), CEIL(27000 * 10, 9), 0x40,71 BRCM_RATE_6M},72 /* MCS 9: SS 2, MOD: QPSK, CR 1/2 */73 {26000, 54000, CEIL(26000 * 10, 9), CEIL(54000 * 10, 9), 0x48,74 BRCM_RATE_12M},75 /* MCS 10: SS 2, MOD: QPSK, CR 3/4 */76 {39000, 81000, CEIL(39000 * 10, 9), CEIL(81000 * 10, 9), 0x4A,77 BRCM_RATE_18M},78 /* MCS 11: SS 2, MOD: 16QAM, CR 1/2 */79 {52000, 108000, CEIL(52000 * 10, 9), CEIL(108000 * 10, 9), 0x50,80 BRCM_RATE_24M},81 /* MCS 12: SS 2, MOD: 16QAM, CR 3/4 */82 {78000, 162000, CEIL(78000 * 10, 9), CEIL(162000 * 10, 9), 0x52,83 BRCM_RATE_36M},84 /* MCS 13: SS 2, MOD: 64QAM, CR 2/3 */85 {104000, 216000, CEIL(104000 * 10, 9), CEIL(216000 * 10, 9), 0x59,86 BRCM_RATE_48M},87 /* MCS 14: SS 2, MOD: 64QAM, CR 3/4 */88 {117000, 243000, CEIL(117000 * 10, 9), CEIL(243000 * 10, 9), 0x5A,89 BRCM_RATE_54M},90 /* MCS 15: SS 2, MOD: 64QAM, CR 5/6 */91 {130000, 270000, CEIL(130000 * 10, 9), CEIL(270000 * 10, 9), 0x5C,92 BRCM_RATE_54M},93 /* MCS 16: SS 3, MOD: BPSK, CR 1/2 */94 {19500, 40500, CEIL(19500 * 10, 9), CEIL(40500 * 10, 9), 0x80,95 BRCM_RATE_6M},96 /* MCS 17: SS 3, MOD: QPSK, CR 1/2 */97 {39000, 81000, CEIL(39000 * 10, 9), CEIL(81000 * 10, 9), 0x88,98 BRCM_RATE_12M},99 /* MCS 18: SS 3, MOD: QPSK, CR 3/4 */100 {58500, 121500, CEIL(58500 * 10, 9), CEIL(121500 * 10, 9), 0x8A,101 BRCM_RATE_18M},102 /* MCS 19: SS 3, MOD: 16QAM, CR 1/2 */103 {78000, 162000, CEIL(78000 * 10, 9), CEIL(162000 * 10, 9), 0x90,104 BRCM_RATE_24M},105 /* MCS 20: SS 3, MOD: 16QAM, CR 3/4 */106 {117000, 243000, CEIL(117000 * 10, 9), CEIL(243000 * 10, 9), 0x92,107 BRCM_RATE_36M},108 /* MCS 21: SS 3, MOD: 64QAM, CR 2/3 */109 {156000, 324000, CEIL(156000 * 10, 9), CEIL(324000 * 10, 9), 0x99,110 BRCM_RATE_48M},111 /* MCS 22: SS 3, MOD: 64QAM, CR 3/4 */112 {175500, 364500, CEIL(175500 * 10, 9), CEIL(364500 * 10, 9), 0x9A,113 BRCM_RATE_54M},114 /* MCS 23: SS 3, MOD: 64QAM, CR 5/6 */115 {195000, 405000, CEIL(195000 * 10, 9), CEIL(405000 * 10, 9), 0x9B,116 BRCM_RATE_54M},117 /* MCS 24: SS 4, MOD: BPSK, CR 1/2 */118 {26000, 54000, CEIL(26000 * 10, 9), CEIL(54000 * 10, 9), 0xC0,119 BRCM_RATE_6M},120 /* MCS 25: SS 4, MOD: QPSK, CR 1/2 */121 {52000, 108000, CEIL(52000 * 10, 9), CEIL(108000 * 10, 9), 0xC8,122 BRCM_RATE_12M},123 /* MCS 26: SS 4, MOD: QPSK, CR 3/4 */124 {78000, 162000, CEIL(78000 * 10, 9), CEIL(162000 * 10, 9), 0xCA,125 BRCM_RATE_18M},126 /* MCS 27: SS 4, MOD: 16QAM, CR 1/2 */127 {104000, 216000, CEIL(104000 * 10, 9), CEIL(216000 * 10, 9), 0xD0,128 BRCM_RATE_24M},129 /* MCS 28: SS 4, MOD: 16QAM, CR 3/4 */130 {156000, 324000, CEIL(156000 * 10, 9), CEIL(324000 * 10, 9), 0xD2,131 BRCM_RATE_36M},132 /* MCS 29: SS 4, MOD: 64QAM, CR 2/3 */133 {208000, 432000, CEIL(208000 * 10, 9), CEIL(432000 * 10, 9), 0xD9,134 BRCM_RATE_48M},135 /* MCS 30: SS 4, MOD: 64QAM, CR 3/4 */136 {234000, 486000, CEIL(234000 * 10, 9), CEIL(486000 * 10, 9), 0xDA,137 BRCM_RATE_54M},138 /* MCS 31: SS 4, MOD: 64QAM, CR 5/6 */139 {260000, 540000, CEIL(260000 * 10, 9), CEIL(540000 * 10, 9), 0xDB,140 BRCM_RATE_54M},141 /* MCS 32: SS 1, MOD: BPSK, CR 1/2 */142 {0, 6000, 0, CEIL(6000 * 10, 9), 0x00, BRCM_RATE_6M},143};144 145/*146 * phycfg for legacy OFDM frames: code rate, modulation scheme, spatial streams147 * Number of spatial streams: always 1 other fields: refer to table 78 of148 * section 17.3.2.2 of the original .11a standard149 */150struct legacy_phycfg {151 u32 rate_ofdm; /* ofdm mac rate */152 /* phy ctl byte 3, code rate, modulation type, # of streams */153 u8 tx_phy_ctl3;154};155 156/* Number of legacy_rate_cfg entries in the table */157#define LEGACY_PHYCFG_TABLE_SIZE 12158 159/*160 * In CCK mode LPPHY overloads OFDM Modulation bits with CCK Data Rate161 * Eventually MIMOPHY would also be converted to this format162 * 0 = 1Mbps; 1 = 2Mbps; 2 = 5.5Mbps; 3 = 11Mbps163 */164static const struct165legacy_phycfg legacy_phycfg_table[LEGACY_PHYCFG_TABLE_SIZE] = {166 {BRCM_RATE_1M, 0x00}, /* CCK 1Mbps, data rate 0 */167 {BRCM_RATE_2M, 0x08}, /* CCK 2Mbps, data rate 1 */168 {BRCM_RATE_5M5, 0x10}, /* CCK 5.5Mbps, data rate 2 */169 {BRCM_RATE_11M, 0x18}, /* CCK 11Mbps, data rate 3 */170 /* OFDM 6Mbps, code rate 1/2, BPSK, 1 spatial stream */171 {BRCM_RATE_6M, 0x00},172 /* OFDM 9Mbps, code rate 3/4, BPSK, 1 spatial stream */173 {BRCM_RATE_9M, 0x02},174 /* OFDM 12Mbps, code rate 1/2, QPSK, 1 spatial stream */175 {BRCM_RATE_12M, 0x08},176 /* OFDM 18Mbps, code rate 3/4, QPSK, 1 spatial stream */177 {BRCM_RATE_18M, 0x0A},178 /* OFDM 24Mbps, code rate 1/2, 16-QAM, 1 spatial stream */179 {BRCM_RATE_24M, 0x10},180 /* OFDM 36Mbps, code rate 3/4, 16-QAM, 1 spatial stream */181 {BRCM_RATE_36M, 0x12},182 /* OFDM 48Mbps, code rate 2/3, 64-QAM, 1 spatial stream */183 {BRCM_RATE_48M, 0x19},184 /* OFDM 54Mbps, code rate 3/4, 64-QAM, 1 spatial stream */185 {BRCM_RATE_54M, 0x1A},186};187 188/* Hardware rates (also encodes default basic rates) */189 190const struct brcms_c_rateset cck_ofdm_mimo_rates = {191 12,192 /* 1b, 2b, 5.5b, 6, 9, 11b, 12, 18, 24, 36, 48, */193 { 0x82, 0x84, 0x8b, 0x0c, 0x12, 0x96, 0x18, 0x24, 0x30, 0x48, 0x60,194 /* 54 Mbps */195 0x6c},196 0x00,197 { 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,198 0x00, 0x00, 0x00, 0x00, 0x00}199};200 201const struct brcms_c_rateset ofdm_mimo_rates = {202 8,203 /* 6b, 9, 12b, 18, 24b, 36, 48, 54 Mbps */204 { 0x8c, 0x12, 0x98, 0x24, 0xb0, 0x48, 0x60, 0x6c},205 0x00,206 { 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,207 0x00, 0x00, 0x00, 0x00, 0x00}208};209 210/* Default ratesets that include MCS32 for 40BW channels */211static const struct brcms_c_rateset cck_ofdm_40bw_mimo_rates = {212 12,213 /* 1b, 2b, 5.5b, 6, 9, 11b, 12, 18, 24, 36, 48 */214 { 0x82, 0x84, 0x8b, 0x0c, 0x12, 0x96, 0x18, 0x24, 0x30, 0x48, 0x60,215 /* 54 Mbps */216 0x6c},217 0x00,218 { 0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,219 0x00, 0x00, 0x00, 0x00, 0x00}220};221 222static const struct brcms_c_rateset ofdm_40bw_mimo_rates = {223 8,224 /* 6b, 9, 12b, 18, 24b, 36, 48, 54 Mbps */225 { 0x8c, 0x12, 0x98, 0x24, 0xb0, 0x48, 0x60, 0x6c},226 0x00,227 { 0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,228 0x00, 0x00, 0x00, 0x00, 0x00}229};230 231const struct brcms_c_rateset cck_ofdm_rates = {232 12,233 /* 1b, 2b, 5.5b, 6, 9, 11b, 12, 18, 24, 36, 48,*/234 { 0x82, 0x84, 0x8b, 0x0c, 0x12, 0x96, 0x18, 0x24, 0x30, 0x48, 0x60,235 /*54 Mbps */236 0x6c},237 0x00,238 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,239 0x00, 0x00, 0x00, 0x00, 0x00}240};241 242const struct brcms_c_rateset gphy_legacy_rates = {243 4,244 /* 1b, 2b, 5.5b, 11b Mbps */245 { 0x82, 0x84, 0x8b, 0x96},246 0x00,247 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,248 0x00, 0x00, 0x00, 0x00, 0x00}249};250 251const struct brcms_c_rateset ofdm_rates = {252 8,253 /* 6b, 9, 12b, 18, 24b, 36, 48, 54 Mbps */254 { 0x8c, 0x12, 0x98, 0x24, 0xb0, 0x48, 0x60, 0x6c},255 0x00,256 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,257 0x00, 0x00, 0x00, 0x00, 0x00}258};259 260const struct brcms_c_rateset cck_rates = {261 4,262 /* 1b, 2b, 5.5, 11 Mbps */263 { 0x82, 0x84, 0x0b, 0x16},264 0x00,265 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,266 0x00, 0x00, 0x00, 0x00, 0x00}267};268 269/* check if rateset is valid.270 * if check_brate is true, rateset without a basic rate is considered NOT valid.271 */272static bool brcms_c_rateset_valid(struct brcms_c_rateset *rs, bool check_brate)273{274 uint idx;275 276 if (!rs->count)277 return false;278 279 if (!check_brate)280 return true;281 282 /* error if no basic rates */283 for (idx = 0; idx < rs->count; idx++) {284 if (rs->rates[idx] & BRCMS_RATE_FLAG)285 return true;286 }287 return false;288}289 290void brcms_c_rateset_mcs_upd(struct brcms_c_rateset *rs, u8 txstreams)291{292 int i;293 for (i = txstreams; i < MAX_STREAMS_SUPPORTED; i++)294 rs->mcs[i] = 0;295}296 297/*298 * filter based on hardware rateset, and sort filtered rateset with basic299 * bit(s) preserved, and check if resulting rateset is valid.300*/301bool302brcms_c_rate_hwrs_filter_sort_validate(struct brcms_c_rateset *rs,303 const struct brcms_c_rateset *hw_rs,304 bool check_brate, u8 txstreams)305{306 u8 rateset[BRCM_MAXRATE + 1];307 u8 r;308 uint count;309 uint i;310 311 memset(rateset, 0, sizeof(rateset));312 count = rs->count;313 314 for (i = 0; i < count; i++) {315 /* mask off "basic rate" bit, BRCMS_RATE_FLAG */316 r = (int)rs->rates[i] & BRCMS_RATE_MASK;317 if ((r > BRCM_MAXRATE) || (rate_info[r] == 0))318 continue;319 rateset[r] = rs->rates[i]; /* preserve basic bit! */320 }321 322 /* fill out the rates in order, looking at only supported rates */323 count = 0;324 for (i = 0; i < hw_rs->count; i++) {325 r = hw_rs->rates[i] & BRCMS_RATE_MASK;326 if (rateset[r])327 rs->rates[count++] = rateset[r];328 }329 330 rs->count = count;331 332 /* only set the mcs rate bit if the equivalent hw mcs bit is set */333 for (i = 0; i < MCSSET_LEN; i++)334 rs->mcs[i] = (rs->mcs[i] & hw_rs->mcs[i]);335 336 if (brcms_c_rateset_valid(rs, check_brate))337 return true;338 else339 return false;340}341 342/* calculate the rate of a rx'd frame and return it as a ratespec */343u32 brcms_c_compute_rspec(struct d11rxhdr *rxh, u8 *plcp)344{345 int phy_type;346 u32 rspec = PHY_TXC1_BW_20MHZ << RSPEC_BW_SHIFT;347 348 phy_type =349 ((rxh->RxChan & RXS_CHAN_PHYTYPE_MASK) >> RXS_CHAN_PHYTYPE_SHIFT);350 351 if ((phy_type == PHY_TYPE_N) || (phy_type == PHY_TYPE_SSN) ||352 (phy_type == PHY_TYPE_LCN) || (phy_type == PHY_TYPE_HT)) {353 switch (rxh->PhyRxStatus_0 & PRXS0_FT_MASK) {354 case PRXS0_CCK:355 rspec =356 cck_phy2mac_rate(357 ((struct cck_phy_hdr *) plcp)->signal);358 break;359 case PRXS0_OFDM:360 rspec =361 ofdm_phy2mac_rate(362 ((struct ofdm_phy_hdr *) plcp)->rlpt[0]);363 break;364 case PRXS0_PREN:365 rspec = (plcp[0] & MIMO_PLCP_MCS_MASK) | RSPEC_MIMORATE;366 if (plcp[0] & MIMO_PLCP_40MHZ) {367 /* indicate rspec is for 40 MHz mode */368 rspec &= ~RSPEC_BW_MASK;369 rspec |= (PHY_TXC1_BW_40MHZ << RSPEC_BW_SHIFT);370 }371 break;372 case PRXS0_STDN:373 /* fallthru */374 default:375 /* not supported, error condition */376 break;377 }378 if (plcp3_issgi(plcp[3]))379 rspec |= RSPEC_SHORT_GI;380 } else381 if ((phy_type == PHY_TYPE_A) || (rxh->PhyRxStatus_0 & PRXS0_OFDM))382 rspec = ofdm_phy2mac_rate(383 ((struct ofdm_phy_hdr *) plcp)->rlpt[0]);384 else385 rspec = cck_phy2mac_rate(386 ((struct cck_phy_hdr *) plcp)->signal);387 388 return rspec;389}390 391/* copy rateset src to dst as-is (no masking or sorting) */392void brcms_c_rateset_copy(const struct brcms_c_rateset *src,393 struct brcms_c_rateset *dst)394{395 memcpy(dst, src, sizeof(struct brcms_c_rateset));396}397 398/*399 * Copy and selectively filter one rateset to another.400 * 'basic_only' means only copy basic rates.401 * 'rates' indicates cck (11b) and ofdm rates combinations.402 * - 0: cck and ofdm403 * - 1: cck only404 * - 2: ofdm only405 * 'xmask' is the copy mask (typically 0x7f or 0xff).406 */407void408brcms_c_rateset_filter(struct brcms_c_rateset *src, struct brcms_c_rateset *dst,409 bool basic_only, u8 rates, uint xmask, bool mcsallow)410{411 uint i;412 uint r;413 uint count;414 415 count = 0;416 for (i = 0; i < src->count; i++) {417 r = src->rates[i];418 if (basic_only && !(r & BRCMS_RATE_FLAG))419 continue;420 if (rates == BRCMS_RATES_CCK &&421 is_ofdm_rate((r & BRCMS_RATE_MASK)))422 continue;423 if (rates == BRCMS_RATES_OFDM &&424 is_cck_rate((r & BRCMS_RATE_MASK)))425 continue;426 dst->rates[count++] = r & xmask;427 }428 dst->count = count;429 dst->htphy_membership = src->htphy_membership;430 431 if (mcsallow && rates != BRCMS_RATES_CCK)432 memcpy(&dst->mcs[0], &src->mcs[0], MCSSET_LEN);433 else434 brcms_c_rateset_mcs_clear(dst);435}436 437/* select rateset for a given phy_type and bandtype and filter it, sort it438 * and fill rs_tgt with result439 */440void441brcms_c_rateset_default(struct brcms_c_rateset *rs_tgt,442 const struct brcms_c_rateset *rs_hw,443 uint phy_type, int bandtype, bool cck_only,444 uint rate_mask, bool mcsallow, u8 bw, u8 txstreams)445{446 const struct brcms_c_rateset *rs_dflt;447 struct brcms_c_rateset rs_sel;448 if ((PHYTYPE_IS(phy_type, PHY_TYPE_HT)) ||449 (PHYTYPE_IS(phy_type, PHY_TYPE_N)) ||450 (PHYTYPE_IS(phy_type, PHY_TYPE_LCN)) ||451 (PHYTYPE_IS(phy_type, PHY_TYPE_SSN))) {452 if (bandtype == BRCM_BAND_5G)453 rs_dflt = (bw == BRCMS_20_MHZ ?454 &ofdm_mimo_rates : &ofdm_40bw_mimo_rates);455 else456 rs_dflt = (bw == BRCMS_20_MHZ ?457 &cck_ofdm_mimo_rates :458 &cck_ofdm_40bw_mimo_rates);459 } else if (PHYTYPE_IS(phy_type, PHY_TYPE_LP)) {460 rs_dflt = (bandtype == BRCM_BAND_5G) ?461 &ofdm_rates : &cck_ofdm_rates;462 } else if (PHYTYPE_IS(phy_type, PHY_TYPE_A)) {463 rs_dflt = &ofdm_rates;464 } else if (PHYTYPE_IS(phy_type, PHY_TYPE_G)) {465 rs_dflt = &cck_ofdm_rates;466 } else {467 /* should not happen, error condition */468 rs_dflt = &cck_rates; /* force cck */469 }470 471 /* if hw rateset is not supplied, assign selected rateset to it */472 if (!rs_hw)473 rs_hw = rs_dflt;474 475 brcms_c_rateset_copy(rs_dflt, &rs_sel);476 brcms_c_rateset_mcs_upd(&rs_sel, txstreams);477 brcms_c_rateset_filter(&rs_sel, rs_tgt, false,478 cck_only ? BRCMS_RATES_CCK : BRCMS_RATES_CCK_OFDM,479 rate_mask, mcsallow);480 brcms_c_rate_hwrs_filter_sort_validate(rs_tgt, rs_hw, false,481 mcsallow ? txstreams : 1);482}483 484s16 brcms_c_rate_legacy_phyctl(uint rate)485{486 uint i;487 for (i = 0; i < LEGACY_PHYCFG_TABLE_SIZE; i++)488 if (rate == legacy_phycfg_table[i].rate_ofdm)489 return legacy_phycfg_table[i].tx_phy_ctl3;490 491 return -1;492}493 494void brcms_c_rateset_mcs_clear(struct brcms_c_rateset *rateset)495{496 uint i;497 for (i = 0; i < MCSSET_LEN; i++)498 rateset->mcs[i] = 0;499}500 501void brcms_c_rateset_mcs_build(struct brcms_c_rateset *rateset, u8 txstreams)502{503 memcpy(&rateset->mcs[0], &cck_ofdm_mimo_rates.mcs[0], MCSSET_LEN);504 brcms_c_rateset_mcs_upd(rateset, txstreams);505}506 507/* Based on bandwidth passed, allow/disallow MCS 32 in the rateset */508void brcms_c_rateset_bw_mcs_filter(struct brcms_c_rateset *rateset, u8 bw)509{510 if (bw == BRCMS_40_MHZ)511 setbit(rateset->mcs, 32);512 else513 clrbit(rateset->mcs, 32);514}515