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