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 <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_rate 26 * value 27 */ 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, 0x8c 41}; 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 streams 147 * Number of spatial streams: always 1 other fields: refer to table 78 of 148 * section 17.3.2.2 of the original .11a standard 149 */ 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 12 158 159/* 160 * In CCK mode LPPHY overloads OFDM Modulation bits with CCK Data Rate 161 * Eventually MIMOPHY would also be converted to this format 162 * 0 = 1Mbps; 1 = 2Mbps; 2 = 5.5Mbps; 3 = 11Mbps 163 */ 164static const struct 165legacy_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 basic 299 * bit(s) preserved, and check if resulting rateset is valid. 300*/ 301bool 302brcms_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 else 339 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 } else 381 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 else 385 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 ofdm 403 * - 1: cck only 404 * - 2: ofdm only 405 * 'xmask' is the copy mask (typically 0x7f or 0xff). 406 */ 407void 408brcms_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 else 434 brcms_c_rateset_mcs_clear(dst); 435} 436 437/* select rateset for a given phy_type and bandtype and filter it, sort it 438 * and fill rs_tgt with result 439 */ 440void 441brcms_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 else 456 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 else 513 clrbit(rateset->mcs, 32); 514} 515