Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 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 | */ |
Brett Rudley | 3327989 | 2010-10-01 18:03:27 -0700 | [diff] [blame] | 16 | #include <linux/kernel.h> |
Greg Kroah-Hartman | a1c16ed | 2010-10-21 11:17:44 -0700 | [diff] [blame] | 17 | #include <bcmdefs.h> |
| 18 | #include <wlc_cfg.h> |
| 19 | #include <osl.h> |
Brett Rudley | c6ac24e | 2010-10-26 11:55:23 -0700 | [diff] [blame] | 20 | #include <linux/module.h> |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 21 | #include <bcmutils.h> |
| 22 | #include <siutils.h> |
| 23 | #include <bcmendian.h> |
| 24 | #include <wlioctl.h> |
| 25 | |
Brett Rudley | a52ba66 | 2010-10-26 09:17:06 -0700 | [diff] [blame] | 26 | #include <sbhndpio.h> |
| 27 | #include <sbhnddma.h> |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 28 | #include <proto/802.11.h> |
| 29 | #include <d11.h> |
| 30 | #include <wlc_rate.h> |
| 31 | #include <wl_dbg.h> |
| 32 | #include <wlc_pub.h> |
| 33 | |
| 34 | /* Rate info per rate: It tells whether a rate is ofdm or not and its phy_rate value */ |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 35 | const u8 rate_info[WLC_MAXRATE + 1] = { |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 36 | /* 0 1 2 3 4 5 6 7 8 9 */ |
| 37 | /* 0 */ 0x00, 0x00, 0x0a, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 38 | /* 10 */ 0x00, 0x37, 0x8b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8f, 0x00, |
| 39 | /* 20 */ 0x00, 0x00, 0x6e, 0x00, 0x8a, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 40 | /* 30 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8e, 0x00, 0x00, 0x00, |
| 41 | /* 40 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x89, 0x00, |
| 42 | /* 50 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 43 | /* 60 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 44 | /* 70 */ 0x00, 0x00, 0x8d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 45 | /* 80 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 46 | /* 90 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x88, 0x00, 0x00, 0x00, |
| 47 | /* 100 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8c |
| 48 | }; |
| 49 | |
| 50 | /* rates are in units of Kbps */ |
| 51 | const mcs_info_t mcs_table[MCS_TABLE_SIZE] = { |
| 52 | /* MCS 0: SS 1, MOD: BPSK, CR 1/2 */ |
| 53 | {6500, 13500, CEIL(6500 * 10, 9), CEIL(13500 * 10, 9), 0x00, |
| 54 | WLC_RATE_6M}, |
| 55 | /* MCS 1: SS 1, MOD: QPSK, CR 1/2 */ |
| 56 | {13000, 27000, CEIL(13000 * 10, 9), CEIL(27000 * 10, 9), 0x08, |
| 57 | WLC_RATE_12M}, |
| 58 | /* MCS 2: SS 1, MOD: QPSK, CR 3/4 */ |
| 59 | {19500, 40500, CEIL(19500 * 10, 9), CEIL(40500 * 10, 9), 0x0A, |
| 60 | WLC_RATE_18M}, |
| 61 | /* MCS 3: SS 1, MOD: 16QAM, CR 1/2 */ |
| 62 | {26000, 54000, CEIL(26000 * 10, 9), CEIL(54000 * 10, 9), 0x10, |
| 63 | WLC_RATE_24M}, |
| 64 | /* MCS 4: SS 1, MOD: 16QAM, CR 3/4 */ |
| 65 | {39000, 81000, CEIL(39000 * 10, 9), CEIL(81000 * 10, 9), 0x12, |
| 66 | WLC_RATE_36M}, |
| 67 | /* MCS 5: SS 1, MOD: 64QAM, CR 2/3 */ |
| 68 | {52000, 108000, CEIL(52000 * 10, 9), CEIL(108000 * 10, 9), 0x19, |
| 69 | WLC_RATE_48M}, |
| 70 | /* MCS 6: SS 1, MOD: 64QAM, CR 3/4 */ |
| 71 | {58500, 121500, CEIL(58500 * 10, 9), CEIL(121500 * 10, 9), 0x1A, |
| 72 | WLC_RATE_54M}, |
| 73 | /* MCS 7: SS 1, MOD: 64QAM, CR 5/6 */ |
| 74 | {65000, 135000, CEIL(65000 * 10, 9), CEIL(135000 * 10, 9), 0x1C, |
| 75 | WLC_RATE_54M}, |
| 76 | /* MCS 8: SS 2, MOD: BPSK, CR 1/2 */ |
| 77 | {13000, 27000, CEIL(13000 * 10, 9), CEIL(27000 * 10, 9), 0x40, |
| 78 | WLC_RATE_6M}, |
| 79 | /* MCS 9: SS 2, MOD: QPSK, CR 1/2 */ |
| 80 | {26000, 54000, CEIL(26000 * 10, 9), CEIL(54000 * 10, 9), 0x48, |
| 81 | WLC_RATE_12M}, |
| 82 | /* MCS 10: SS 2, MOD: QPSK, CR 3/4 */ |
| 83 | {39000, 81000, CEIL(39000 * 10, 9), CEIL(81000 * 10, 9), 0x4A, |
| 84 | WLC_RATE_18M}, |
| 85 | /* MCS 11: SS 2, MOD: 16QAM, CR 1/2 */ |
| 86 | {52000, 108000, CEIL(52000 * 10, 9), CEIL(108000 * 10, 9), 0x50, |
| 87 | WLC_RATE_24M}, |
| 88 | /* MCS 12: SS 2, MOD: 16QAM, CR 3/4 */ |
| 89 | {78000, 162000, CEIL(78000 * 10, 9), CEIL(162000 * 10, 9), 0x52, |
| 90 | WLC_RATE_36M}, |
| 91 | /* MCS 13: SS 2, MOD: 64QAM, CR 2/3 */ |
| 92 | {104000, 216000, CEIL(104000 * 10, 9), CEIL(216000 * 10, 9), 0x59, |
| 93 | WLC_RATE_48M}, |
| 94 | /* MCS 14: SS 2, MOD: 64QAM, CR 3/4 */ |
| 95 | {117000, 243000, CEIL(117000 * 10, 9), CEIL(243000 * 10, 9), 0x5A, |
| 96 | WLC_RATE_54M}, |
| 97 | /* MCS 15: SS 2, MOD: 64QAM, CR 5/6 */ |
| 98 | {130000, 270000, CEIL(130000 * 10, 9), CEIL(270000 * 10, 9), 0x5C, |
| 99 | WLC_RATE_54M}, |
| 100 | /* MCS 16: SS 3, MOD: BPSK, CR 1/2 */ |
| 101 | {19500, 40500, CEIL(19500 * 10, 9), CEIL(40500 * 10, 9), 0x80, |
| 102 | WLC_RATE_6M}, |
| 103 | /* MCS 17: SS 3, MOD: QPSK, CR 1/2 */ |
| 104 | {39000, 81000, CEIL(39000 * 10, 9), CEIL(81000 * 10, 9), 0x88, |
| 105 | WLC_RATE_12M}, |
| 106 | /* MCS 18: SS 3, MOD: QPSK, CR 3/4 */ |
| 107 | {58500, 121500, CEIL(58500 * 10, 9), CEIL(121500 * 10, 9), 0x8A, |
| 108 | WLC_RATE_18M}, |
| 109 | /* MCS 19: SS 3, MOD: 16QAM, CR 1/2 */ |
| 110 | {78000, 162000, CEIL(78000 * 10, 9), CEIL(162000 * 10, 9), 0x90, |
| 111 | WLC_RATE_24M}, |
| 112 | /* MCS 20: SS 3, MOD: 16QAM, CR 3/4 */ |
| 113 | {117000, 243000, CEIL(117000 * 10, 9), CEIL(243000 * 10, 9), 0x92, |
| 114 | WLC_RATE_36M}, |
| 115 | /* MCS 21: SS 3, MOD: 64QAM, CR 2/3 */ |
| 116 | {156000, 324000, CEIL(156000 * 10, 9), CEIL(324000 * 10, 9), 0x99, |
| 117 | WLC_RATE_48M}, |
| 118 | /* MCS 22: SS 3, MOD: 64QAM, CR 3/4 */ |
| 119 | {175500, 364500, CEIL(175500 * 10, 9), CEIL(364500 * 10, 9), 0x9A, |
| 120 | WLC_RATE_54M}, |
| 121 | /* MCS 23: SS 3, MOD: 64QAM, CR 5/6 */ |
| 122 | {195000, 405000, CEIL(195000 * 10, 9), CEIL(405000 * 10, 9), 0x9B, |
| 123 | WLC_RATE_54M}, |
| 124 | /* MCS 24: SS 4, MOD: BPSK, CR 1/2 */ |
| 125 | {26000, 54000, CEIL(26000 * 10, 9), CEIL(54000 * 10, 9), 0xC0, |
| 126 | WLC_RATE_6M}, |
| 127 | /* MCS 25: SS 4, MOD: QPSK, CR 1/2 */ |
| 128 | {52000, 108000, CEIL(52000 * 10, 9), CEIL(108000 * 10, 9), 0xC8, |
| 129 | WLC_RATE_12M}, |
| 130 | /* MCS 26: SS 4, MOD: QPSK, CR 3/4 */ |
| 131 | {78000, 162000, CEIL(78000 * 10, 9), CEIL(162000 * 10, 9), 0xCA, |
| 132 | WLC_RATE_18M}, |
| 133 | /* MCS 27: SS 4, MOD: 16QAM, CR 1/2 */ |
| 134 | {104000, 216000, CEIL(104000 * 10, 9), CEIL(216000 * 10, 9), 0xD0, |
| 135 | WLC_RATE_24M}, |
| 136 | /* MCS 28: SS 4, MOD: 16QAM, CR 3/4 */ |
| 137 | {156000, 324000, CEIL(156000 * 10, 9), CEIL(324000 * 10, 9), 0xD2, |
| 138 | WLC_RATE_36M}, |
| 139 | /* MCS 29: SS 4, MOD: 64QAM, CR 2/3 */ |
| 140 | {208000, 432000, CEIL(208000 * 10, 9), CEIL(432000 * 10, 9), 0xD9, |
| 141 | WLC_RATE_48M}, |
| 142 | /* MCS 30: SS 4, MOD: 64QAM, CR 3/4 */ |
| 143 | {234000, 486000, CEIL(234000 * 10, 9), CEIL(486000 * 10, 9), 0xDA, |
| 144 | WLC_RATE_54M}, |
| 145 | /* MCS 31: SS 4, MOD: 64QAM, CR 5/6 */ |
| 146 | {260000, 540000, CEIL(260000 * 10, 9), CEIL(540000 * 10, 9), 0xDB, |
| 147 | WLC_RATE_54M}, |
| 148 | /* MCS 32: SS 1, MOD: BPSK, CR 1/2 */ |
| 149 | {0, 6000, 0, CEIL(6000 * 10, 9), 0x00, WLC_RATE_6M}, |
| 150 | }; |
| 151 | |
| 152 | /* phycfg for legacy OFDM frames: code rate, modulation scheme, spatial streams |
| 153 | * Number of spatial streams: always 1 |
| 154 | * other fields: refer to table 78 of section 17.3.2.2 of the original .11a standard |
| 155 | */ |
| 156 | typedef struct legacy_phycfg { |
Greg Kroah-Hartman | 66cbd3a | 2010-10-08 11:05:47 -0700 | [diff] [blame] | 157 | u32 rate_ofdm; /* ofdm mac rate */ |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 158 | u8 tx_phy_ctl3; /* phy ctl byte 3, code rate, modulation type, # of streams */ |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 159 | } legacy_phycfg_t; |
| 160 | |
| 161 | #define LEGACY_PHYCFG_TABLE_SIZE 12 /* Number of legacy_rate_cfg entries in the table */ |
| 162 | |
| 163 | /* In CCK mode LPPHY overloads OFDM Modulation bits with CCK Data Rate */ |
| 164 | /* Eventually MIMOPHY would also be converted to this format */ |
| 165 | /* 0 = 1Mbps; 1 = 2Mbps; 2 = 5.5Mbps; 3 = 11Mbps */ |
| 166 | static const legacy_phycfg_t legacy_phycfg_table[LEGACY_PHYCFG_TABLE_SIZE] = { |
| 167 | {WLC_RATE_1M, 0x00}, /* CCK 1Mbps, data rate 0 */ |
| 168 | {WLC_RATE_2M, 0x08}, /* CCK 2Mbps, data rate 1 */ |
| 169 | {WLC_RATE_5M5, 0x10}, /* CCK 5.5Mbps, data rate 2 */ |
| 170 | {WLC_RATE_11M, 0x18}, /* CCK 11Mbps, data rate 3 */ |
| 171 | {WLC_RATE_6M, 0x00}, /* OFDM 6Mbps, code rate 1/2, BPSK, 1 spatial stream */ |
| 172 | {WLC_RATE_9M, 0x02}, /* OFDM 9Mbps, code rate 3/4, BPSK, 1 spatial stream */ |
| 173 | {WLC_RATE_12M, 0x08}, /* OFDM 12Mbps, code rate 1/2, QPSK, 1 spatial stream */ |
| 174 | {WLC_RATE_18M, 0x0A}, /* OFDM 18Mbps, code rate 3/4, QPSK, 1 spatial stream */ |
| 175 | {WLC_RATE_24M, 0x10}, /* OFDM 24Mbps, code rate 1/2, 16-QAM, 1 spatial stream */ |
| 176 | {WLC_RATE_36M, 0x12}, /* OFDM 36Mbps, code rate 3/4, 16-QAM, 1 spatial stream */ |
| 177 | {WLC_RATE_48M, 0x19}, /* OFDM 48Mbps, code rate 2/3, 64-QAM, 1 spatial stream */ |
| 178 | {WLC_RATE_54M, 0x1A}, /* OFDM 54Mbps, code rate 3/4, 64-QAM, 1 spatial stream */ |
| 179 | }; |
| 180 | |
| 181 | /* Hardware rates (also encodes default basic rates) */ |
| 182 | |
| 183 | const wlc_rateset_t cck_ofdm_mimo_rates = { |
| 184 | 12, |
| 185 | { /* 1b, 2b, 5.5b, 6, 9, 11b, 12, 18, 24, 36, 48, 54 Mbps */ |
| 186 | 0x82, 0x84, 0x8b, 0x0c, 0x12, 0x96, 0x18, 0x24, 0x30, 0x48, 0x60, |
| 187 | 0x6c}, |
| 188 | 0x00, |
| 189 | {0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 190 | 0x00, 0x00, 0x00, 0x00} |
| 191 | }; |
| 192 | |
| 193 | const wlc_rateset_t ofdm_mimo_rates = { |
| 194 | 8, |
| 195 | { /* 6b, 9, 12b, 18, 24b, 36, 48, 54 Mbps */ |
| 196 | 0x8c, 0x12, 0x98, 0x24, 0xb0, 0x48, 0x60, 0x6c}, |
| 197 | 0x00, |
| 198 | {0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 199 | 0x00, 0x00, 0x00, 0x00} |
| 200 | }; |
| 201 | |
| 202 | /* Default ratesets that include MCS32 for 40BW channels */ |
| 203 | const wlc_rateset_t cck_ofdm_40bw_mimo_rates = { |
| 204 | 12, |
| 205 | { /* 1b, 2b, 5.5b, 6, 9, 11b, 12, 18, 24, 36, 48, 54 Mbps */ |
| 206 | 0x82, 0x84, 0x8b, 0x0c, 0x12, 0x96, 0x18, 0x24, 0x30, 0x48, 0x60, |
| 207 | 0x6c}, |
| 208 | 0x00, |
| 209 | {0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 210 | 0x00, 0x00, 0x00, 0x00} |
| 211 | }; |
| 212 | |
| 213 | const wlc_rateset_t ofdm_40bw_mimo_rates = { |
| 214 | 8, |
| 215 | { /* 6b, 9, 12b, 18, 24b, 36, 48, 54 Mbps */ |
| 216 | 0x8c, 0x12, 0x98, 0x24, 0xb0, 0x48, 0x60, 0x6c}, |
| 217 | 0x00, |
| 218 | {0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 219 | 0x00, 0x00, 0x00, 0x00} |
| 220 | }; |
| 221 | |
| 222 | const wlc_rateset_t cck_ofdm_rates = { |
| 223 | 12, |
| 224 | { /* 1b, 2b, 5.5b, 6, 9, 11b, 12, 18, 24, 36, 48, 54 Mbps */ |
| 225 | 0x82, 0x84, 0x8b, 0x0c, 0x12, 0x96, 0x18, 0x24, 0x30, 0x48, 0x60, |
| 226 | 0x6c}, |
| 227 | 0x00, |
| 228 | {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 229 | 0x00, 0x00, 0x00, 0x00} |
| 230 | }; |
| 231 | |
| 232 | const wlc_rateset_t gphy_legacy_rates = { |
| 233 | 4, |
| 234 | { /* 1b, 2b, 5.5b, 11b Mbps */ |
| 235 | 0x82, 0x84, 0x8b, 0x96}, |
| 236 | 0x00, |
| 237 | {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 238 | 0x00, 0x00, 0x00, 0x00} |
| 239 | }; |
| 240 | |
| 241 | const wlc_rateset_t ofdm_rates = { |
| 242 | 8, |
| 243 | { /* 6b, 9, 12b, 18, 24b, 36, 48, 54 Mbps */ |
| 244 | 0x8c, 0x12, 0x98, 0x24, 0xb0, 0x48, 0x60, 0x6c}, |
| 245 | 0x00, |
| 246 | {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 247 | 0x00, 0x00, 0x00, 0x00} |
| 248 | }; |
| 249 | |
| 250 | const wlc_rateset_t cck_rates = { |
| 251 | 4, |
| 252 | { /* 1b, 2b, 5.5, 11 Mbps */ |
| 253 | 0x82, 0x84, 0x0b, 0x16}, |
| 254 | 0x00, |
| 255 | {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 256 | 0x00, 0x00, 0x00, 0x00} |
| 257 | }; |
| 258 | |
Jason Cooper | 7cc4a4c | 2010-09-14 09:45:30 -0400 | [diff] [blame] | 259 | static bool wlc_rateset_valid(wlc_rateset_t *rs, bool check_brate); |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 260 | |
| 261 | /* check if rateset is valid. |
| 262 | * if check_brate is true, rateset without a basic rate is considered NOT valid. |
| 263 | */ |
Jason Cooper | 7cc4a4c | 2010-09-14 09:45:30 -0400 | [diff] [blame] | 264 | static bool wlc_rateset_valid(wlc_rateset_t *rs, bool check_brate) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 265 | { |
| 266 | uint idx; |
| 267 | |
| 268 | if (!rs->count) |
Greg Kroah-Hartman | 0965ae8 | 2010-10-12 12:50:15 -0700 | [diff] [blame] | 269 | return false; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 270 | |
| 271 | if (!check_brate) |
Greg Kroah-Hartman | 0f0881b | 2010-10-12 12:15:18 -0700 | [diff] [blame] | 272 | return true; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 273 | |
| 274 | /* error if no basic rates */ |
| 275 | for (idx = 0; idx < rs->count; idx++) { |
| 276 | if (rs->rates[idx] & WLC_RATE_FLAG) |
Greg Kroah-Hartman | 0f0881b | 2010-10-12 12:15:18 -0700 | [diff] [blame] | 277 | return true; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 278 | } |
Greg Kroah-Hartman | 0965ae8 | 2010-10-12 12:50:15 -0700 | [diff] [blame] | 279 | return false; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 280 | } |
| 281 | |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 282 | void wlc_rateset_mcs_upd(wlc_rateset_t *rs, u8 txstreams) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 283 | { |
| 284 | int i; |
| 285 | for (i = txstreams; i < MAX_STREAMS_SUPPORTED; i++) |
| 286 | rs->mcs[i] = 0; |
| 287 | } |
| 288 | |
| 289 | /* filter based on hardware rateset, and sort filtered rateset with basic bit(s) preserved, |
| 290 | * and check if resulting rateset is valid. |
| 291 | */ |
| 292 | bool |
Jason Cooper | 7cc4a4c | 2010-09-14 09:45:30 -0400 | [diff] [blame] | 293 | wlc_rate_hwrs_filter_sort_validate(wlc_rateset_t *rs, |
| 294 | const wlc_rateset_t *hw_rs, |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 295 | bool check_brate, u8 txstreams) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 296 | { |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 297 | u8 rateset[WLC_MAXRATE + 1]; |
| 298 | u8 r; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 299 | uint count; |
| 300 | uint i; |
| 301 | |
Brett Rudley | 9249ede | 2010-11-30 20:09:49 -0800 | [diff] [blame^] | 302 | memset(rateset, 0, sizeof(rateset)); |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 303 | count = rs->count; |
| 304 | |
| 305 | for (i = 0; i < count; i++) { |
| 306 | /* mask off "basic rate" bit, WLC_RATE_FLAG */ |
| 307 | r = (int)rs->rates[i] & RATE_MASK; |
| 308 | if ((r > WLC_MAXRATE) || (rate_info[r] == 0)) { |
| 309 | continue; |
| 310 | } |
| 311 | rateset[r] = rs->rates[i]; /* preserve basic bit! */ |
| 312 | } |
| 313 | |
| 314 | /* fill out the rates in order, looking at only supported rates */ |
| 315 | count = 0; |
| 316 | for (i = 0; i < hw_rs->count; i++) { |
| 317 | r = hw_rs->rates[i] & RATE_MASK; |
| 318 | ASSERT(r <= WLC_MAXRATE); |
| 319 | if (rateset[r]) |
| 320 | rs->rates[count++] = rateset[r]; |
| 321 | } |
| 322 | |
| 323 | rs->count = count; |
| 324 | |
| 325 | /* only set the mcs rate bit if the equivalent hw mcs bit is set */ |
| 326 | for (i = 0; i < MCSSET_LEN; i++) |
| 327 | rs->mcs[i] = (rs->mcs[i] & hw_rs->mcs[i]); |
| 328 | |
| 329 | if (wlc_rateset_valid(rs, check_brate)) |
Greg Kroah-Hartman | 0f0881b | 2010-10-12 12:15:18 -0700 | [diff] [blame] | 330 | return true; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 331 | else |
Greg Kroah-Hartman | 0965ae8 | 2010-10-12 12:50:15 -0700 | [diff] [blame] | 332 | return false; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 333 | } |
| 334 | |
| 335 | /* caluclate the rate of a rx'd frame and return it as a ratespec */ |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 336 | ratespec_t BCMFASTPATH wlc_compute_rspec(d11rxhdr_t *rxh, u8 *plcp) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 337 | { |
| 338 | int phy_type; |
| 339 | ratespec_t rspec = PHY_TXC1_BW_20MHZ << RSPEC_BW_SHIFT; |
| 340 | |
| 341 | phy_type = |
| 342 | ((rxh->RxChan & RXS_CHAN_PHYTYPE_MASK) >> RXS_CHAN_PHYTYPE_SHIFT); |
| 343 | |
| 344 | if ((phy_type == PHY_TYPE_N) || (phy_type == PHY_TYPE_SSN) || |
| 345 | (phy_type == PHY_TYPE_LCN) || (phy_type == PHY_TYPE_HT)) { |
| 346 | switch (rxh->PhyRxStatus_0 & PRXS0_FT_MASK) { |
| 347 | case PRXS0_CCK: |
| 348 | rspec = |
| 349 | CCK_PHY2MAC_RATE(((cck_phy_hdr_t *) plcp)->signal); |
| 350 | break; |
| 351 | case PRXS0_OFDM: |
| 352 | rspec = |
| 353 | OFDM_PHY2MAC_RATE(((ofdm_phy_hdr_t *) plcp)-> |
| 354 | rlpt[0]); |
| 355 | break; |
| 356 | case PRXS0_PREN: |
| 357 | rspec = (plcp[0] & MIMO_PLCP_MCS_MASK) | RSPEC_MIMORATE; |
| 358 | if (plcp[0] & MIMO_PLCP_40MHZ) { |
| 359 | /* indicate rspec is for 40 MHz mode */ |
| 360 | rspec &= ~RSPEC_BW_MASK; |
| 361 | rspec |= (PHY_TXC1_BW_40MHZ << RSPEC_BW_SHIFT); |
| 362 | } |
| 363 | break; |
| 364 | case PRXS0_STDN: |
| 365 | /* fallthru */ |
| 366 | default: |
| 367 | /* not supported */ |
| 368 | ASSERT(0); |
| 369 | break; |
| 370 | } |
| 371 | if (PLCP3_ISSGI(plcp[3])) |
| 372 | rspec |= RSPEC_SHORT_GI; |
| 373 | } else |
| 374 | if ((phy_type == PHY_TYPE_A) || (rxh->PhyRxStatus_0 & PRXS0_OFDM)) |
| 375 | rspec = OFDM_PHY2MAC_RATE(((ofdm_phy_hdr_t *) plcp)->rlpt[0]); |
| 376 | else |
| 377 | rspec = CCK_PHY2MAC_RATE(((cck_phy_hdr_t *) plcp)->signal); |
| 378 | |
| 379 | return rspec; |
| 380 | } |
| 381 | |
| 382 | /* copy rateset src to dst as-is (no masking or sorting) */ |
Jason Cooper | 7cc4a4c | 2010-09-14 09:45:30 -0400 | [diff] [blame] | 383 | void wlc_rateset_copy(const wlc_rateset_t *src, wlc_rateset_t *dst) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 384 | { |
| 385 | bcopy(src, dst, sizeof(wlc_rateset_t)); |
| 386 | } |
| 387 | |
| 388 | /* |
| 389 | * Copy and selectively filter one rateset to another. |
| 390 | * 'basic_only' means only copy basic rates. |
| 391 | * 'rates' indicates cck (11b) and ofdm rates combinations. |
| 392 | * - 0: cck and ofdm |
| 393 | * - 1: cck only |
| 394 | * - 2: ofdm only |
| 395 | * 'xmask' is the copy mask (typically 0x7f or 0xff). |
| 396 | */ |
| 397 | void |
Jason Cooper | 7cc4a4c | 2010-09-14 09:45:30 -0400 | [diff] [blame] | 398 | wlc_rateset_filter(wlc_rateset_t *src, wlc_rateset_t *dst, bool basic_only, |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 399 | u8 rates, uint xmask, bool mcsallow) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 400 | { |
| 401 | uint i; |
| 402 | uint r; |
| 403 | uint count; |
| 404 | |
| 405 | count = 0; |
| 406 | for (i = 0; i < src->count; i++) { |
| 407 | r = src->rates[i]; |
| 408 | if (basic_only && !(r & WLC_RATE_FLAG)) |
| 409 | continue; |
| 410 | if ((rates == WLC_RATES_CCK) && IS_OFDM((r & RATE_MASK))) |
| 411 | continue; |
| 412 | if ((rates == WLC_RATES_OFDM) && IS_CCK((r & RATE_MASK))) |
| 413 | continue; |
| 414 | dst->rates[count++] = r & xmask; |
| 415 | } |
| 416 | dst->count = count; |
| 417 | dst->htphy_membership = src->htphy_membership; |
| 418 | |
| 419 | if (mcsallow && rates != WLC_RATES_CCK) |
| 420 | bcopy(&src->mcs[0], &dst->mcs[0], MCSSET_LEN); |
| 421 | else |
| 422 | wlc_rateset_mcs_clear(dst); |
| 423 | } |
| 424 | |
| 425 | /* select rateset for a given phy_type and bandtype and filter it, sort it |
| 426 | * and fill rs_tgt with result |
| 427 | */ |
| 428 | void |
Jason Cooper | 7cc4a4c | 2010-09-14 09:45:30 -0400 | [diff] [blame] | 429 | wlc_rateset_default(wlc_rateset_t *rs_tgt, const wlc_rateset_t *rs_hw, |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 430 | uint phy_type, int bandtype, bool cck_only, uint rate_mask, |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 431 | bool mcsallow, u8 bw, u8 txstreams) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 432 | { |
| 433 | const wlc_rateset_t *rs_dflt; |
| 434 | wlc_rateset_t rs_sel; |
| 435 | if ((PHYTYPE_IS(phy_type, PHY_TYPE_HT)) || |
| 436 | (PHYTYPE_IS(phy_type, PHY_TYPE_N)) || |
| 437 | (PHYTYPE_IS(phy_type, PHY_TYPE_LCN)) || |
| 438 | (PHYTYPE_IS(phy_type, PHY_TYPE_SSN))) { |
| 439 | if (BAND_5G(bandtype)) { |
| 440 | rs_dflt = (bw == WLC_20_MHZ ? |
| 441 | &ofdm_mimo_rates : &ofdm_40bw_mimo_rates); |
| 442 | } else { |
| 443 | rs_dflt = (bw == WLC_20_MHZ ? |
| 444 | &cck_ofdm_mimo_rates : |
| 445 | &cck_ofdm_40bw_mimo_rates); |
| 446 | } |
| 447 | } else if (PHYTYPE_IS(phy_type, PHY_TYPE_LP)) { |
| 448 | rs_dflt = (BAND_5G(bandtype)) ? &ofdm_rates : &cck_ofdm_rates; |
| 449 | } else if (PHYTYPE_IS(phy_type, PHY_TYPE_A)) { |
| 450 | rs_dflt = &ofdm_rates; |
| 451 | } else if (PHYTYPE_IS(phy_type, PHY_TYPE_G)) { |
| 452 | rs_dflt = &cck_ofdm_rates; |
| 453 | } else { |
| 454 | ASSERT(0); /* should not happen */ |
| 455 | rs_dflt = &cck_rates; /* force cck */ |
| 456 | } |
| 457 | |
| 458 | /* if hw rateset is not supplied, assign selected rateset to it */ |
| 459 | if (!rs_hw) |
| 460 | rs_hw = rs_dflt; |
| 461 | |
| 462 | wlc_rateset_copy(rs_dflt, &rs_sel); |
| 463 | wlc_rateset_mcs_upd(&rs_sel, txstreams); |
Greg Kroah-Hartman | 0965ae8 | 2010-10-12 12:50:15 -0700 | [diff] [blame] | 464 | wlc_rateset_filter(&rs_sel, rs_tgt, false, |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 465 | cck_only ? WLC_RATES_CCK : WLC_RATES_CCK_OFDM, |
| 466 | rate_mask, mcsallow); |
Greg Kroah-Hartman | 0965ae8 | 2010-10-12 12:50:15 -0700 | [diff] [blame] | 467 | wlc_rate_hwrs_filter_sort_validate(rs_tgt, rs_hw, false, |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 468 | mcsallow ? txstreams : 1); |
| 469 | } |
| 470 | |
Greg Kroah-Hartman | e59fe08 | 2010-10-07 17:08:21 -0700 | [diff] [blame] | 471 | s16 BCMFASTPATH wlc_rate_legacy_phyctl(uint rate) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 472 | { |
| 473 | uint i; |
| 474 | for (i = 0; i < LEGACY_PHYCFG_TABLE_SIZE; i++) |
| 475 | if (rate == legacy_phycfg_table[i].rate_ofdm) |
| 476 | return legacy_phycfg_table[i].tx_phy_ctl3; |
| 477 | |
| 478 | return -1; |
| 479 | } |
| 480 | |
Jason Cooper | 7cc4a4c | 2010-09-14 09:45:30 -0400 | [diff] [blame] | 481 | void wlc_rateset_mcs_clear(wlc_rateset_t *rateset) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 482 | { |
| 483 | uint i; |
| 484 | for (i = 0; i < MCSSET_LEN; i++) |
| 485 | rateset->mcs[i] = 0; |
| 486 | } |
| 487 | |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 488 | void wlc_rateset_mcs_build(wlc_rateset_t *rateset, u8 txstreams) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 489 | { |
| 490 | bcopy(&cck_ofdm_mimo_rates.mcs[0], &rateset->mcs[0], MCSSET_LEN); |
| 491 | wlc_rateset_mcs_upd(rateset, txstreams); |
| 492 | } |
| 493 | |
| 494 | /* Based on bandwidth passed, allow/disallow MCS 32 in the rateset */ |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 495 | void wlc_rateset_bw_mcs_filter(wlc_rateset_t *rateset, u8 bw) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 496 | { |
| 497 | if (bw == WLC_40_MHZ) |
| 498 | setbit(rateset->mcs, 32); |
| 499 | else |
| 500 | clrbit(rateset->mcs, 32); |
| 501 | } |