| /* |
| * 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 <linux/kernel.h> |
| #include <bcmdefs.h> |
| #include <wlc_cfg.h> |
| #include <osl.h> |
| #include <linuxver.h> |
| #include <bcmutils.h> |
| #include <siutils.h> |
| #include <bcmendian.h> |
| #include <wlioctl.h> |
| |
| #include <proto/802.11.h> |
| #include <d11.h> |
| #include <wlc_rate.h> |
| #include <wl_dbg.h> |
| #include <wlc_pub.h> |
| |
| /* Rate info per rate: It tells whether a rate is ofdm or not and its phy_rate value */ |
| const u8 rate_info[WLC_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 mcs_info_t 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, |
| WLC_RATE_6M}, |
| /* MCS 1: SS 1, MOD: QPSK, CR 1/2 */ |
| {13000, 27000, CEIL(13000 * 10, 9), CEIL(27000 * 10, 9), 0x08, |
| WLC_RATE_12M}, |
| /* MCS 2: SS 1, MOD: QPSK, CR 3/4 */ |
| {19500, 40500, CEIL(19500 * 10, 9), CEIL(40500 * 10, 9), 0x0A, |
| WLC_RATE_18M}, |
| /* MCS 3: SS 1, MOD: 16QAM, CR 1/2 */ |
| {26000, 54000, CEIL(26000 * 10, 9), CEIL(54000 * 10, 9), 0x10, |
| WLC_RATE_24M}, |
| /* MCS 4: SS 1, MOD: 16QAM, CR 3/4 */ |
| {39000, 81000, CEIL(39000 * 10, 9), CEIL(81000 * 10, 9), 0x12, |
| WLC_RATE_36M}, |
| /* MCS 5: SS 1, MOD: 64QAM, CR 2/3 */ |
| {52000, 108000, CEIL(52000 * 10, 9), CEIL(108000 * 10, 9), 0x19, |
| WLC_RATE_48M}, |
| /* MCS 6: SS 1, MOD: 64QAM, CR 3/4 */ |
| {58500, 121500, CEIL(58500 * 10, 9), CEIL(121500 * 10, 9), 0x1A, |
| WLC_RATE_54M}, |
| /* MCS 7: SS 1, MOD: 64QAM, CR 5/6 */ |
| {65000, 135000, CEIL(65000 * 10, 9), CEIL(135000 * 10, 9), 0x1C, |
| WLC_RATE_54M}, |
| /* MCS 8: SS 2, MOD: BPSK, CR 1/2 */ |
| {13000, 27000, CEIL(13000 * 10, 9), CEIL(27000 * 10, 9), 0x40, |
| WLC_RATE_6M}, |
| /* MCS 9: SS 2, MOD: QPSK, CR 1/2 */ |
| {26000, 54000, CEIL(26000 * 10, 9), CEIL(54000 * 10, 9), 0x48, |
| WLC_RATE_12M}, |
| /* MCS 10: SS 2, MOD: QPSK, CR 3/4 */ |
| {39000, 81000, CEIL(39000 * 10, 9), CEIL(81000 * 10, 9), 0x4A, |
| WLC_RATE_18M}, |
| /* MCS 11: SS 2, MOD: 16QAM, CR 1/2 */ |
| {52000, 108000, CEIL(52000 * 10, 9), CEIL(108000 * 10, 9), 0x50, |
| WLC_RATE_24M}, |
| /* MCS 12: SS 2, MOD: 16QAM, CR 3/4 */ |
| {78000, 162000, CEIL(78000 * 10, 9), CEIL(162000 * 10, 9), 0x52, |
| WLC_RATE_36M}, |
| /* MCS 13: SS 2, MOD: 64QAM, CR 2/3 */ |
| {104000, 216000, CEIL(104000 * 10, 9), CEIL(216000 * 10, 9), 0x59, |
| WLC_RATE_48M}, |
| /* MCS 14: SS 2, MOD: 64QAM, CR 3/4 */ |
| {117000, 243000, CEIL(117000 * 10, 9), CEIL(243000 * 10, 9), 0x5A, |
| WLC_RATE_54M}, |
| /* MCS 15: SS 2, MOD: 64QAM, CR 5/6 */ |
| {130000, 270000, CEIL(130000 * 10, 9), CEIL(270000 * 10, 9), 0x5C, |
| WLC_RATE_54M}, |
| /* MCS 16: SS 3, MOD: BPSK, CR 1/2 */ |
| {19500, 40500, CEIL(19500 * 10, 9), CEIL(40500 * 10, 9), 0x80, |
| WLC_RATE_6M}, |
| /* MCS 17: SS 3, MOD: QPSK, CR 1/2 */ |
| {39000, 81000, CEIL(39000 * 10, 9), CEIL(81000 * 10, 9), 0x88, |
| WLC_RATE_12M}, |
| /* MCS 18: SS 3, MOD: QPSK, CR 3/4 */ |
| {58500, 121500, CEIL(58500 * 10, 9), CEIL(121500 * 10, 9), 0x8A, |
| WLC_RATE_18M}, |
| /* MCS 19: SS 3, MOD: 16QAM, CR 1/2 */ |
| {78000, 162000, CEIL(78000 * 10, 9), CEIL(162000 * 10, 9), 0x90, |
| WLC_RATE_24M}, |
| /* MCS 20: SS 3, MOD: 16QAM, CR 3/4 */ |
| {117000, 243000, CEIL(117000 * 10, 9), CEIL(243000 * 10, 9), 0x92, |
| WLC_RATE_36M}, |
| /* MCS 21: SS 3, MOD: 64QAM, CR 2/3 */ |
| {156000, 324000, CEIL(156000 * 10, 9), CEIL(324000 * 10, 9), 0x99, |
| WLC_RATE_48M}, |
| /* MCS 22: SS 3, MOD: 64QAM, CR 3/4 */ |
| {175500, 364500, CEIL(175500 * 10, 9), CEIL(364500 * 10, 9), 0x9A, |
| WLC_RATE_54M}, |
| /* MCS 23: SS 3, MOD: 64QAM, CR 5/6 */ |
| {195000, 405000, CEIL(195000 * 10, 9), CEIL(405000 * 10, 9), 0x9B, |
| WLC_RATE_54M}, |
| /* MCS 24: SS 4, MOD: BPSK, CR 1/2 */ |
| {26000, 54000, CEIL(26000 * 10, 9), CEIL(54000 * 10, 9), 0xC0, |
| WLC_RATE_6M}, |
| /* MCS 25: SS 4, MOD: QPSK, CR 1/2 */ |
| {52000, 108000, CEIL(52000 * 10, 9), CEIL(108000 * 10, 9), 0xC8, |
| WLC_RATE_12M}, |
| /* MCS 26: SS 4, MOD: QPSK, CR 3/4 */ |
| {78000, 162000, CEIL(78000 * 10, 9), CEIL(162000 * 10, 9), 0xCA, |
| WLC_RATE_18M}, |
| /* MCS 27: SS 4, MOD: 16QAM, CR 1/2 */ |
| {104000, 216000, CEIL(104000 * 10, 9), CEIL(216000 * 10, 9), 0xD0, |
| WLC_RATE_24M}, |
| /* MCS 28: SS 4, MOD: 16QAM, CR 3/4 */ |
| {156000, 324000, CEIL(156000 * 10, 9), CEIL(324000 * 10, 9), 0xD2, |
| WLC_RATE_36M}, |
| /* MCS 29: SS 4, MOD: 64QAM, CR 2/3 */ |
| {208000, 432000, CEIL(208000 * 10, 9), CEIL(432000 * 10, 9), 0xD9, |
| WLC_RATE_48M}, |
| /* MCS 30: SS 4, MOD: 64QAM, CR 3/4 */ |
| {234000, 486000, CEIL(234000 * 10, 9), CEIL(486000 * 10, 9), 0xDA, |
| WLC_RATE_54M}, |
| /* MCS 31: SS 4, MOD: 64QAM, CR 5/6 */ |
| {260000, 540000, CEIL(260000 * 10, 9), CEIL(540000 * 10, 9), 0xDB, |
| WLC_RATE_54M}, |
| /* MCS 32: SS 1, MOD: BPSK, CR 1/2 */ |
| {0, 6000, 0, CEIL(6000 * 10, 9), 0x00, WLC_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 |
| */ |
| typedef struct legacy_phycfg { |
| u32 rate_ofdm; /* ofdm mac rate */ |
| u8 tx_phy_ctl3; /* phy ctl byte 3, code rate, modulation type, # of streams */ |
| } legacy_phycfg_t; |
| |
| #define LEGACY_PHYCFG_TABLE_SIZE 12 /* Number of legacy_rate_cfg entries in the table */ |
| |
| /* 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 legacy_phycfg_t legacy_phycfg_table[LEGACY_PHYCFG_TABLE_SIZE] = { |
| {WLC_RATE_1M, 0x00}, /* CCK 1Mbps, data rate 0 */ |
| {WLC_RATE_2M, 0x08}, /* CCK 2Mbps, data rate 1 */ |
| {WLC_RATE_5M5, 0x10}, /* CCK 5.5Mbps, data rate 2 */ |
| {WLC_RATE_11M, 0x18}, /* CCK 11Mbps, data rate 3 */ |
| {WLC_RATE_6M, 0x00}, /* OFDM 6Mbps, code rate 1/2, BPSK, 1 spatial stream */ |
| {WLC_RATE_9M, 0x02}, /* OFDM 9Mbps, code rate 3/4, BPSK, 1 spatial stream */ |
| {WLC_RATE_12M, 0x08}, /* OFDM 12Mbps, code rate 1/2, QPSK, 1 spatial stream */ |
| {WLC_RATE_18M, 0x0A}, /* OFDM 18Mbps, code rate 3/4, QPSK, 1 spatial stream */ |
| {WLC_RATE_24M, 0x10}, /* OFDM 24Mbps, code rate 1/2, 16-QAM, 1 spatial stream */ |
| {WLC_RATE_36M, 0x12}, /* OFDM 36Mbps, code rate 3/4, 16-QAM, 1 spatial stream */ |
| {WLC_RATE_48M, 0x19}, /* OFDM 48Mbps, code rate 2/3, 64-QAM, 1 spatial stream */ |
| {WLC_RATE_54M, 0x1A}, /* OFDM 54Mbps, code rate 3/4, 64-QAM, 1 spatial stream */ |
| }; |
| |
| /* Hardware rates (also encodes default basic rates) */ |
| |
| const wlc_rateset_t cck_ofdm_mimo_rates = { |
| 12, |
| { /* 1b, 2b, 5.5b, 6, 9, 11b, 12, 18, 24, 36, 48, 54 Mbps */ |
| 0x82, 0x84, 0x8b, 0x0c, 0x12, 0x96, 0x18, 0x24, 0x30, 0x48, 0x60, |
| 0x6c}, |
| 0x00, |
| {0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00} |
| }; |
| |
| const wlc_rateset_t 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 */ |
| const wlc_rateset_t cck_ofdm_40bw_mimo_rates = { |
| 12, |
| { /* 1b, 2b, 5.5b, 6, 9, 11b, 12, 18, 24, 36, 48, 54 Mbps */ |
| 0x82, 0x84, 0x8b, 0x0c, 0x12, 0x96, 0x18, 0x24, 0x30, 0x48, 0x60, |
| 0x6c}, |
| 0x00, |
| {0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00} |
| }; |
| |
| const wlc_rateset_t 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 wlc_rateset_t cck_ofdm_rates = { |
| 12, |
| { /* 1b, 2b, 5.5b, 6, 9, 11b, 12, 18, 24, 36, 48, 54 Mbps */ |
| 0x82, 0x84, 0x8b, 0x0c, 0x12, 0x96, 0x18, 0x24, 0x30, 0x48, 0x60, |
| 0x6c}, |
| 0x00, |
| {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00} |
| }; |
| |
| const wlc_rateset_t 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 wlc_rateset_t 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 wlc_rateset_t 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} |
| }; |
| |
| static bool wlc_rateset_valid(wlc_rateset_t *rs, bool check_brate); |
| |
| /* check if rateset is valid. |
| * if check_brate is true, rateset without a basic rate is considered NOT valid. |
| */ |
| static bool wlc_rateset_valid(wlc_rateset_t *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] & WLC_RATE_FLAG) |
| return true; |
| } |
| return false; |
| } |
| |
| void wlc_rateset_mcs_upd(wlc_rateset_t *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 |
| wlc_rate_hwrs_filter_sort_validate(wlc_rateset_t *rs, |
| const wlc_rateset_t *hw_rs, |
| bool check_brate, u8 txstreams) |
| { |
| u8 rateset[WLC_MAXRATE + 1]; |
| u8 r; |
| uint count; |
| uint i; |
| |
| bzero(rateset, sizeof(rateset)); |
| count = rs->count; |
| |
| for (i = 0; i < count; i++) { |
| /* mask off "basic rate" bit, WLC_RATE_FLAG */ |
| r = (int)rs->rates[i] & RATE_MASK; |
| if ((r > WLC_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] & RATE_MASK; |
| ASSERT(r <= WLC_MAXRATE); |
| 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 (wlc_rateset_valid(rs, check_brate)) |
| return true; |
| else |
| return false; |
| } |
| |
| /* caluclate the rate of a rx'd frame and return it as a ratespec */ |
| ratespec_t BCMFASTPATH wlc_compute_rspec(d11rxhdr_t *rxh, u8 *plcp) |
| { |
| int phy_type; |
| ratespec_t 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(((cck_phy_hdr_t *) plcp)->signal); |
| break; |
| case PRXS0_OFDM: |
| rspec = |
| OFDM_PHY2MAC_RATE(((ofdm_phy_hdr_t *) 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 */ |
| ASSERT(0); |
| 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(((ofdm_phy_hdr_t *) plcp)->rlpt[0]); |
| else |
| rspec = CCK_PHY2MAC_RATE(((cck_phy_hdr_t *) plcp)->signal); |
| |
| return rspec; |
| } |
| |
| /* copy rateset src to dst as-is (no masking or sorting) */ |
| void wlc_rateset_copy(const wlc_rateset_t *src, wlc_rateset_t *dst) |
| { |
| bcopy(src, dst, sizeof(wlc_rateset_t)); |
| } |
| |
| /* |
| * 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 |
| wlc_rateset_filter(wlc_rateset_t *src, wlc_rateset_t *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 & WLC_RATE_FLAG)) |
| continue; |
| if ((rates == WLC_RATES_CCK) && IS_OFDM((r & RATE_MASK))) |
| continue; |
| if ((rates == WLC_RATES_OFDM) && IS_CCK((r & RATE_MASK))) |
| continue; |
| dst->rates[count++] = r & xmask; |
| } |
| dst->count = count; |
| dst->htphy_membership = src->htphy_membership; |
| |
| if (mcsallow && rates != WLC_RATES_CCK) |
| bcopy(&src->mcs[0], &dst->mcs[0], MCSSET_LEN); |
| else |
| wlc_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 |
| wlc_rateset_default(wlc_rateset_t *rs_tgt, const wlc_rateset_t *rs_hw, |
| uint phy_type, int bandtype, bool cck_only, uint rate_mask, |
| bool mcsallow, u8 bw, u8 txstreams) |
| { |
| const wlc_rateset_t *rs_dflt; |
| wlc_rateset_t 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 (BAND_5G(bandtype)) { |
| rs_dflt = (bw == WLC_20_MHZ ? |
| &ofdm_mimo_rates : &ofdm_40bw_mimo_rates); |
| } else { |
| rs_dflt = (bw == WLC_20_MHZ ? |
| &cck_ofdm_mimo_rates : |
| &cck_ofdm_40bw_mimo_rates); |
| } |
| } else if (PHYTYPE_IS(phy_type, PHY_TYPE_LP)) { |
| rs_dflt = (BAND_5G(bandtype)) ? &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 { |
| ASSERT(0); /* should not happen */ |
| rs_dflt = &cck_rates; /* force cck */ |
| } |
| |
| /* if hw rateset is not supplied, assign selected rateset to it */ |
| if (!rs_hw) |
| rs_hw = rs_dflt; |
| |
| wlc_rateset_copy(rs_dflt, &rs_sel); |
| wlc_rateset_mcs_upd(&rs_sel, txstreams); |
| wlc_rateset_filter(&rs_sel, rs_tgt, false, |
| cck_only ? WLC_RATES_CCK : WLC_RATES_CCK_OFDM, |
| rate_mask, mcsallow); |
| wlc_rate_hwrs_filter_sort_validate(rs_tgt, rs_hw, false, |
| mcsallow ? txstreams : 1); |
| } |
| |
| s16 BCMFASTPATH wlc_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 wlc_rateset_mcs_clear(wlc_rateset_t *rateset) |
| { |
| uint i; |
| for (i = 0; i < MCSSET_LEN; i++) |
| rateset->mcs[i] = 0; |
| } |
| |
| void wlc_rateset_mcs_build(wlc_rateset_t *rateset, u8 txstreams) |
| { |
| bcopy(&cck_ofdm_mimo_rates.mcs[0], &rateset->mcs[0], MCSSET_LEN); |
| wlc_rateset_mcs_upd(rateset, txstreams); |
| } |
| |
| /* Based on bandwidth passed, allow/disallow MCS 32 in the rateset */ |
| void wlc_rateset_bw_mcs_filter(wlc_rateset_t *rateset, u8 bw) |
| { |
| if (bw == WLC_40_MHZ) |
| setbit(rateset->mcs, 32); |
| else |
| clrbit(rateset->mcs, 32); |
| } |
