diff options
Diffstat (limited to 'drivers/net/wireless/broadcom/brcm80211/brcmsmac/rate.c')
-rw-r--r-- | drivers/net/wireless/broadcom/brcm80211/brcmsmac/rate.c | 514 |
1 files changed, 514 insertions, 0 deletions
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/rate.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/rate.c new file mode 100644 index 000000000000..0a0c0ad4f96f --- /dev/null +++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/rate.c @@ -0,0 +1,514 @@ +/* + * Copyright (c) 2010 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <brcmu_wifi.h> +#include <brcmu_utils.h> + +#include "d11.h" +#include "pub.h" +#include "rate.h" + +/* + * Rate info per rate: It tells whether a rate is ofdm or not and its phy_rate + * value + */ +const u8 rate_info[BRCM_MAXRATE + 1] = { + /* 0 1 2 3 4 5 6 7 8 9 */ +/* 0 */ 0x00, 0x00, 0x0a, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, +/* 10 */ 0x00, 0x37, 0x8b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8f, 0x00, +/* 20 */ 0x00, 0x00, 0x6e, 0x00, 0x8a, 0x00, 0x00, 0x00, 0x00, 0x00, +/* 30 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8e, 0x00, 0x00, 0x00, +/* 40 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x89, 0x00, +/* 50 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +/* 60 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +/* 70 */ 0x00, 0x00, 0x8d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +/* 80 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +/* 90 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x88, 0x00, 0x00, 0x00, +/* 100 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8c +}; + +/* rates are in units of Kbps */ +const struct brcms_mcs_info mcs_table[MCS_TABLE_SIZE] = { + /* MCS 0: SS 1, MOD: BPSK, CR 1/2 */ + {6500, 13500, CEIL(6500 * 10, 9), CEIL(13500 * 10, 9), 0x00, + BRCM_RATE_6M}, + /* MCS 1: SS 1, MOD: QPSK, CR 1/2 */ + {13000, 27000, CEIL(13000 * 10, 9), CEIL(27000 * 10, 9), 0x08, + BRCM_RATE_12M}, + /* MCS 2: SS 1, MOD: QPSK, CR 3/4 */ + {19500, 40500, CEIL(19500 * 10, 9), CEIL(40500 * 10, 9), 0x0A, + BRCM_RATE_18M}, + /* MCS 3: SS 1, MOD: 16QAM, CR 1/2 */ + {26000, 54000, CEIL(26000 * 10, 9), CEIL(54000 * 10, 9), 0x10, + BRCM_RATE_24M}, + /* MCS 4: SS 1, MOD: 16QAM, CR 3/4 */ + {39000, 81000, CEIL(39000 * 10, 9), CEIL(81000 * 10, 9), 0x12, + BRCM_RATE_36M}, + /* MCS 5: SS 1, MOD: 64QAM, CR 2/3 */ + {52000, 108000, CEIL(52000 * 10, 9), CEIL(108000 * 10, 9), 0x19, + BRCM_RATE_48M}, + /* MCS 6: SS 1, MOD: 64QAM, CR 3/4 */ + {58500, 121500, CEIL(58500 * 10, 9), CEIL(121500 * 10, 9), 0x1A, + BRCM_RATE_54M}, + /* MCS 7: SS 1, MOD: 64QAM, CR 5/6 */ + {65000, 135000, CEIL(65000 * 10, 9), CEIL(135000 * 10, 9), 0x1C, + BRCM_RATE_54M}, + /* MCS 8: SS 2, MOD: BPSK, CR 1/2 */ + {13000, 27000, CEIL(13000 * 10, 9), CEIL(27000 * 10, 9), 0x40, + BRCM_RATE_6M}, + /* MCS 9: SS 2, MOD: QPSK, CR 1/2 */ + {26000, 54000, CEIL(26000 * 10, 9), CEIL(54000 * 10, 9), 0x48, + BRCM_RATE_12M}, + /* MCS 10: SS 2, MOD: QPSK, CR 3/4 */ + {39000, 81000, CEIL(39000 * 10, 9), CEIL(81000 * 10, 9), 0x4A, + BRCM_RATE_18M}, + /* MCS 11: SS 2, MOD: 16QAM, CR 1/2 */ + {52000, 108000, CEIL(52000 * 10, 9), CEIL(108000 * 10, 9), 0x50, + BRCM_RATE_24M}, + /* MCS 12: SS 2, MOD: 16QAM, CR 3/4 */ + {78000, 162000, CEIL(78000 * 10, 9), CEIL(162000 * 10, 9), 0x52, + BRCM_RATE_36M}, + /* MCS 13: SS 2, MOD: 64QAM, CR 2/3 */ + {104000, 216000, CEIL(104000 * 10, 9), CEIL(216000 * 10, 9), 0x59, + BRCM_RATE_48M}, + /* MCS 14: SS 2, MOD: 64QAM, CR 3/4 */ + {117000, 243000, CEIL(117000 * 10, 9), CEIL(243000 * 10, 9), 0x5A, + BRCM_RATE_54M}, + /* MCS 15: SS 2, MOD: 64QAM, CR 5/6 */ + {130000, 270000, CEIL(130000 * 10, 9), CEIL(270000 * 10, 9), 0x5C, + BRCM_RATE_54M}, + /* MCS 16: SS 3, MOD: BPSK, CR 1/2 */ + {19500, 40500, CEIL(19500 * 10, 9), CEIL(40500 * 10, 9), 0x80, + BRCM_RATE_6M}, + /* MCS 17: SS 3, MOD: QPSK, CR 1/2 */ + {39000, 81000, CEIL(39000 * 10, 9), CEIL(81000 * 10, 9), 0x88, + BRCM_RATE_12M}, + /* MCS 18: SS 3, MOD: QPSK, CR 3/4 */ + {58500, 121500, CEIL(58500 * 10, 9), CEIL(121500 * 10, 9), 0x8A, + BRCM_RATE_18M}, + /* MCS 19: SS 3, MOD: 16QAM, CR 1/2 */ + {78000, 162000, CEIL(78000 * 10, 9), CEIL(162000 * 10, 9), 0x90, + BRCM_RATE_24M}, + /* MCS 20: SS 3, MOD: 16QAM, CR 3/4 */ + {117000, 243000, CEIL(117000 * 10, 9), CEIL(243000 * 10, 9), 0x92, + BRCM_RATE_36M}, + /* MCS 21: SS 3, MOD: 64QAM, CR 2/3 */ + {156000, 324000, CEIL(156000 * 10, 9), CEIL(324000 * 10, 9), 0x99, + BRCM_RATE_48M}, + /* MCS 22: SS 3, MOD: 64QAM, CR 3/4 */ + {175500, 364500, CEIL(175500 * 10, 9), CEIL(364500 * 10, 9), 0x9A, + BRCM_RATE_54M}, + /* MCS 23: SS 3, MOD: 64QAM, CR 5/6 */ + {195000, 405000, CEIL(195000 * 10, 9), CEIL(405000 * 10, 9), 0x9B, + BRCM_RATE_54M}, + /* MCS 24: SS 4, MOD: BPSK, CR 1/2 */ + {26000, 54000, CEIL(26000 * 10, 9), CEIL(54000 * 10, 9), 0xC0, + BRCM_RATE_6M}, + /* MCS 25: SS 4, MOD: QPSK, CR 1/2 */ + {52000, 108000, CEIL(52000 * 10, 9), CEIL(108000 * 10, 9), 0xC8, + BRCM_RATE_12M}, + /* MCS 26: SS 4, MOD: QPSK, CR 3/4 */ + {78000, 162000, CEIL(78000 * 10, 9), CEIL(162000 * 10, 9), 0xCA, + BRCM_RATE_18M}, + /* MCS 27: SS 4, MOD: 16QAM, CR 1/2 */ + {104000, 216000, CEIL(104000 * 10, 9), CEIL(216000 * 10, 9), 0xD0, + BRCM_RATE_24M}, + /* MCS 28: SS 4, MOD: 16QAM, CR 3/4 */ + {156000, 324000, CEIL(156000 * 10, 9), CEIL(324000 * 10, 9), 0xD2, + BRCM_RATE_36M}, + /* MCS 29: SS 4, MOD: 64QAM, CR 2/3 */ + {208000, 432000, CEIL(208000 * 10, 9), CEIL(432000 * 10, 9), 0xD9, + BRCM_RATE_48M}, + /* MCS 30: SS 4, MOD: 64QAM, CR 3/4 */ + {234000, 486000, CEIL(234000 * 10, 9), CEIL(486000 * 10, 9), 0xDA, + BRCM_RATE_54M}, + /* MCS 31: SS 4, MOD: 64QAM, CR 5/6 */ + {260000, 540000, CEIL(260000 * 10, 9), CEIL(540000 * 10, 9), 0xDB, + BRCM_RATE_54M}, + /* MCS 32: SS 1, MOD: BPSK, CR 1/2 */ + {0, 6000, 0, CEIL(6000 * 10, 9), 0x00, BRCM_RATE_6M}, +}; + +/* + * phycfg for legacy OFDM frames: code rate, modulation scheme, spatial streams + * Number of spatial streams: always 1 other fields: refer to table 78 of + * section 17.3.2.2 of the original .11a standard + */ +struct legacy_phycfg { + u32 rate_ofdm; /* ofdm mac rate */ + /* phy ctl byte 3, code rate, modulation type, # of streams */ + u8 tx_phy_ctl3; +}; + +/* Number of legacy_rate_cfg entries in the table */ +#define LEGACY_PHYCFG_TABLE_SIZE 12 + +/* + * In CCK mode LPPHY overloads OFDM Modulation bits with CCK Data Rate + * Eventually MIMOPHY would also be converted to this format + * 0 = 1Mbps; 1 = 2Mbps; 2 = 5.5Mbps; 3 = 11Mbps + */ +static const struct +legacy_phycfg legacy_phycfg_table[LEGACY_PHYCFG_TABLE_SIZE] = { + {BRCM_RATE_1M, 0x00}, /* CCK 1Mbps, data rate 0 */ + {BRCM_RATE_2M, 0x08}, /* CCK 2Mbps, data rate 1 */ + {BRCM_RATE_5M5, 0x10}, /* CCK 5.5Mbps, data rate 2 */ + {BRCM_RATE_11M, 0x18}, /* CCK 11Mbps, data rate 3 */ + /* OFDM 6Mbps, code rate 1/2, BPSK, 1 spatial stream */ + {BRCM_RATE_6M, 0x00}, + /* OFDM 9Mbps, code rate 3/4, BPSK, 1 spatial stream */ + {BRCM_RATE_9M, 0x02}, + /* OFDM 12Mbps, code rate 1/2, QPSK, 1 spatial stream */ + {BRCM_RATE_12M, 0x08}, + /* OFDM 18Mbps, code rate 3/4, QPSK, 1 spatial stream */ + {BRCM_RATE_18M, 0x0A}, + /* OFDM 24Mbps, code rate 1/2, 16-QAM, 1 spatial stream */ + {BRCM_RATE_24M, 0x10}, + /* OFDM 36Mbps, code rate 3/4, 16-QAM, 1 spatial stream */ + {BRCM_RATE_36M, 0x12}, + /* OFDM 48Mbps, code rate 2/3, 64-QAM, 1 spatial stream */ + {BRCM_RATE_48M, 0x19}, + /* OFDM 54Mbps, code rate 3/4, 64-QAM, 1 spatial stream */ + {BRCM_RATE_54M, 0x1A}, +}; + +/* Hardware rates (also encodes default basic rates) */ + +const struct brcms_c_rateset cck_ofdm_mimo_rates = { + 12, + /* 1b, 2b, 5.5b, 6, 9, 11b, 12, 18, 24, 36, 48, */ + { 0x82, 0x84, 0x8b, 0x0c, 0x12, 0x96, 0x18, 0x24, 0x30, 0x48, 0x60, + /* 54 Mbps */ + 0x6c}, + 0x00, + { 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00} +}; + +const struct brcms_c_rateset ofdm_mimo_rates = { + 8, + /* 6b, 9, 12b, 18, 24b, 36, 48, 54 Mbps */ + { 0x8c, 0x12, 0x98, 0x24, 0xb0, 0x48, 0x60, 0x6c}, + 0x00, + { 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00} +}; + +/* Default ratesets that include MCS32 for 40BW channels */ +static const struct brcms_c_rateset cck_ofdm_40bw_mimo_rates = { + 12, + /* 1b, 2b, 5.5b, 6, 9, 11b, 12, 18, 24, 36, 48 */ + { 0x82, 0x84, 0x8b, 0x0c, 0x12, 0x96, 0x18, 0x24, 0x30, 0x48, 0x60, + /* 54 Mbps */ + 0x6c}, + 0x00, + { 0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00} +}; + +static const struct brcms_c_rateset ofdm_40bw_mimo_rates = { + 8, + /* 6b, 9, 12b, 18, 24b, 36, 48, 54 Mbps */ + { 0x8c, 0x12, 0x98, 0x24, 0xb0, 0x48, 0x60, 0x6c}, + 0x00, + { 0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00} +}; + +const struct brcms_c_rateset cck_ofdm_rates = { + 12, + /* 1b, 2b, 5.5b, 6, 9, 11b, 12, 18, 24, 36, 48,*/ + { 0x82, 0x84, 0x8b, 0x0c, 0x12, 0x96, 0x18, 0x24, 0x30, 0x48, 0x60, + /*54 Mbps */ + 0x6c}, + 0x00, + { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00} +}; + +const struct brcms_c_rateset gphy_legacy_rates = { + 4, + /* 1b, 2b, 5.5b, 11b Mbps */ + { 0x82, 0x84, 0x8b, 0x96}, + 0x00, + { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00} +}; + +const struct brcms_c_rateset ofdm_rates = { + 8, + /* 6b, 9, 12b, 18, 24b, 36, 48, 54 Mbps */ + { 0x8c, 0x12, 0x98, 0x24, 0xb0, 0x48, 0x60, 0x6c}, + 0x00, + { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00} +}; + +const struct brcms_c_rateset cck_rates = { + 4, + /* 1b, 2b, 5.5, 11 Mbps */ + { 0x82, 0x84, 0x0b, 0x16}, + 0x00, + { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00} +}; + +/* check if rateset is valid. + * if check_brate is true, rateset without a basic rate is considered NOT valid. + */ +static bool brcms_c_rateset_valid(struct brcms_c_rateset *rs, bool check_brate) +{ + uint idx; + + if (!rs->count) + return false; + + if (!check_brate) + return true; + + /* error if no basic rates */ + for (idx = 0; idx < rs->count; idx++) { + if (rs->rates[idx] & BRCMS_RATE_FLAG) + return true; + } + return false; +} + +void brcms_c_rateset_mcs_upd(struct brcms_c_rateset *rs, u8 txstreams) +{ + int i; + for (i = txstreams; i < MAX_STREAMS_SUPPORTED; i++) + rs->mcs[i] = 0; +} + +/* + * filter based on hardware rateset, and sort filtered rateset with basic + * bit(s) preserved, and check if resulting rateset is valid. +*/ +bool +brcms_c_rate_hwrs_filter_sort_validate(struct brcms_c_rateset *rs, + const struct brcms_c_rateset *hw_rs, + bool check_brate, u8 txstreams) +{ + u8 rateset[BRCM_MAXRATE + 1]; + u8 r; + uint count; + uint i; + + memset(rateset, 0, sizeof(rateset)); + count = rs->count; + + for (i = 0; i < count; i++) { + /* mask off "basic rate" bit, BRCMS_RATE_FLAG */ + r = (int)rs->rates[i] & BRCMS_RATE_MASK; + if ((r > BRCM_MAXRATE) || (rate_info[r] == 0)) + continue; + rateset[r] = rs->rates[i]; /* preserve basic bit! */ + } + + /* fill out the rates in order, looking at only supported rates */ + count = 0; + for (i = 0; i < hw_rs->count; i++) { + r = hw_rs->rates[i] & BRCMS_RATE_MASK; + if (rateset[r]) + rs->rates[count++] = rateset[r]; + } + + rs->count = count; + + /* only set the mcs rate bit if the equivalent hw mcs bit is set */ + for (i = 0; i < MCSSET_LEN; i++) + rs->mcs[i] = (rs->mcs[i] & hw_rs->mcs[i]); + + if (brcms_c_rateset_valid(rs, check_brate)) + return true; + else + return false; +} + +/* calculate the rate of a rx'd frame and return it as a ratespec */ +u32 brcms_c_compute_rspec(struct d11rxhdr *rxh, u8 *plcp) +{ + int phy_type; + u32 rspec = PHY_TXC1_BW_20MHZ << RSPEC_BW_SHIFT; + + phy_type = + ((rxh->RxChan & RXS_CHAN_PHYTYPE_MASK) >> RXS_CHAN_PHYTYPE_SHIFT); + + if ((phy_type == PHY_TYPE_N) || (phy_type == PHY_TYPE_SSN) || + (phy_type == PHY_TYPE_LCN) || (phy_type == PHY_TYPE_HT)) { + switch (rxh->PhyRxStatus_0 & PRXS0_FT_MASK) { + case PRXS0_CCK: + rspec = + cck_phy2mac_rate( + ((struct cck_phy_hdr *) plcp)->signal); + break; + case PRXS0_OFDM: + rspec = + ofdm_phy2mac_rate( + ((struct ofdm_phy_hdr *) plcp)->rlpt[0]); + break; + case PRXS0_PREN: + rspec = (plcp[0] & MIMO_PLCP_MCS_MASK) | RSPEC_MIMORATE; + if (plcp[0] & MIMO_PLCP_40MHZ) { + /* indicate rspec is for 40 MHz mode */ + rspec &= ~RSPEC_BW_MASK; + rspec |= (PHY_TXC1_BW_40MHZ << RSPEC_BW_SHIFT); + } + break; + case PRXS0_STDN: + /* fallthru */ + default: + /* not supported, error condition */ + break; + } + if (plcp3_issgi(plcp[3])) + rspec |= RSPEC_SHORT_GI; + } else + if ((phy_type == PHY_TYPE_A) || (rxh->PhyRxStatus_0 & PRXS0_OFDM)) + rspec = ofdm_phy2mac_rate( + ((struct ofdm_phy_hdr *) plcp)->rlpt[0]); + else + rspec = cck_phy2mac_rate( + ((struct cck_phy_hdr *) plcp)->signal); + + return rspec; +} + +/* copy rateset src to dst as-is (no masking or sorting) */ +void brcms_c_rateset_copy(const struct brcms_c_rateset *src, + struct brcms_c_rateset *dst) +{ + memcpy(dst, src, sizeof(struct brcms_c_rateset)); +} + +/* + * Copy and selectively filter one rateset to another. + * 'basic_only' means only copy basic rates. + * 'rates' indicates cck (11b) and ofdm rates combinations. + * - 0: cck and ofdm + * - 1: cck only + * - 2: ofdm only + * 'xmask' is the copy mask (typically 0x7f or 0xff). + */ +void +brcms_c_rateset_filter(struct brcms_c_rateset *src, struct brcms_c_rateset *dst, + bool basic_only, u8 rates, uint xmask, bool mcsallow) +{ + uint i; + uint r; + uint count; + + count = 0; + for (i = 0; i < src->count; i++) { + r = src->rates[i]; + if (basic_only && !(r & BRCMS_RATE_FLAG)) + continue; + if (rates == BRCMS_RATES_CCK && + is_ofdm_rate((r & BRCMS_RATE_MASK))) + continue; + if (rates == BRCMS_RATES_OFDM && + is_cck_rate((r & BRCMS_RATE_MASK))) + continue; + dst->rates[count++] = r & xmask; + } + dst->count = count; + dst->htphy_membership = src->htphy_membership; + + if (mcsallow && rates != BRCMS_RATES_CCK) + memcpy(&dst->mcs[0], &src->mcs[0], MCSSET_LEN); + else + brcms_c_rateset_mcs_clear(dst); +} + +/* select rateset for a given phy_type and bandtype and filter it, sort it + * and fill rs_tgt with result + */ +void +brcms_c_rateset_default(struct brcms_c_rateset *rs_tgt, + const struct brcms_c_rateset *rs_hw, + uint phy_type, int bandtype, bool cck_only, + uint rate_mask, bool mcsallow, u8 bw, u8 txstreams) +{ + const struct brcms_c_rateset *rs_dflt; + struct brcms_c_rateset rs_sel; + if ((PHYTYPE_IS(phy_type, PHY_TYPE_HT)) || + (PHYTYPE_IS(phy_type, PHY_TYPE_N)) || + (PHYTYPE_IS(phy_type, PHY_TYPE_LCN)) || + (PHYTYPE_IS(phy_type, PHY_TYPE_SSN))) { + if (bandtype == BRCM_BAND_5G) + rs_dflt = (bw == BRCMS_20_MHZ ? + &ofdm_mimo_rates : &ofdm_40bw_mimo_rates); + else + rs_dflt = (bw == BRCMS_20_MHZ ? + &cck_ofdm_mimo_rates : + &cck_ofdm_40bw_mimo_rates); + } else if (PHYTYPE_IS(phy_type, PHY_TYPE_LP)) { + rs_dflt = (bandtype == BRCM_BAND_5G) ? + &ofdm_rates : &cck_ofdm_rates; + } else if (PHYTYPE_IS(phy_type, PHY_TYPE_A)) { + rs_dflt = &ofdm_rates; + } else if (PHYTYPE_IS(phy_type, PHY_TYPE_G)) { + rs_dflt = &cck_ofdm_rates; + } else { + /* should not happen, error condition */ + rs_dflt = &cck_rates; /* force cck */ + } + + /* if hw rateset is not supplied, assign selected rateset to it */ + if (!rs_hw) + rs_hw = rs_dflt; + + brcms_c_rateset_copy(rs_dflt, &rs_sel); + brcms_c_rateset_mcs_upd(&rs_sel, txstreams); + brcms_c_rateset_filter(&rs_sel, rs_tgt, false, + cck_only ? BRCMS_RATES_CCK : BRCMS_RATES_CCK_OFDM, + rate_mask, mcsallow); + brcms_c_rate_hwrs_filter_sort_validate(rs_tgt, rs_hw, false, + mcsallow ? txstreams : 1); +} + +s16 brcms_c_rate_legacy_phyctl(uint rate) +{ + uint i; + for (i = 0; i < LEGACY_PHYCFG_TABLE_SIZE; i++) + if (rate == legacy_phycfg_table[i].rate_ofdm) + return legacy_phycfg_table[i].tx_phy_ctl3; + + return -1; +} + +void brcms_c_rateset_mcs_clear(struct brcms_c_rateset *rateset) +{ + uint i; + for (i = 0; i < MCSSET_LEN; i++) + rateset->mcs[i] = 0; +} + +void brcms_c_rateset_mcs_build(struct brcms_c_rateset *rateset, u8 txstreams) +{ + memcpy(&rateset->mcs[0], &cck_ofdm_mimo_rates.mcs[0], MCSSET_LEN); + brcms_c_rateset_mcs_upd(rateset, txstreams); +} + +/* Based on bandwidth passed, allow/disallow MCS 32 in the rateset */ +void brcms_c_rateset_bw_mcs_filter(struct brcms_c_rateset *rateset, u8 bw) +{ + if (bw == BRCMS_40_MHZ) + setbit(rateset->mcs, 32); + else + clrbit(rateset->mcs, 32); +} |