1/* 2 * ============================================================================ 3 * MTO.C - 4 * 5 * Description: 6 * MAC Throughput Optimization for W89C33 802.11g WLAN STA. 7 * 8 * The following MIB attributes or internal variables will be affected 9 * while the MTO is being executed: 10 * dot11FragmentationThreshold, 11 * dot11RTSThreshold, 12 * transmission rate and PLCP preamble type, 13 * CCA mode, 14 * antenna diversity. 15 * 16 * Copyright (c) 2003 Winbond Electronics Corp. All rights reserved. 17 * ============================================================================ 18 */ 19 20#include "sme_api.h" 21#include "wbhal.h" 22#include "wb35reg_f.h" 23#include "core.h" 24 25/* Declare SQ3 to rate and fragmentation threshold table */ 26/* Declare fragmentation thresholds table */ 27#define MTO_MAX_FRAG_TH_LEVELS 5 28#define MTO_MAX_DATA_RATE_LEVELS 12 29 30u16 MTO_Frag_Th_Tbl[MTO_MAX_FRAG_TH_LEVELS] = { 31 256, 384, 512, 768, 1536 32}; 33 34/* 35 * Declare data rate table: 36 * The following table will be changed at anytime if the opration rate 37 * supported by AP don't match the table 38 */ 39static u8 MTO_Data_Rate_Tbl[MTO_MAX_DATA_RATE_LEVELS] = { 40 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 41}; 42 43/* this record the retry rate at different data rate */ 44static int retryrate_rec[MTO_MAX_DATA_RATE_LEVELS]; 45 46static u8 boSparseTxTraffic; 47 48void MTO_Init(struct wbsoft_priv *adapter); 49void TxRateReductionCtrl(struct wbsoft_priv *adapter); 50void MTO_SetTxCount(struct wbsoft_priv *adapter, u8 t0, u8 index); 51void MTO_TxFailed(struct wbsoft_priv *adapter); 52void hal_get_dto_para(struct wbsoft_priv *adapter, char *buffer); 53 54/* 55 * =========================================================================== 56 * MTO_Init -- 57 * 58 * Description: 59 * Initialize MTO parameters. 60 * 61 * This function should be invoked during system initialization. 62 * 63 * Arguments: 64 * adapter - The pointer to the Miniport adapter Context 65 * =========================================================================== 66 */ 67void MTO_Init(struct wbsoft_priv *adapter) 68{ 69 int i; 70 71 MTO_PREAMBLE_TYPE() = MTO_PREAMBLE_SHORT; /* for test */ 72 73 MTO_CNT_ANT(0) = 0; 74 MTO_CNT_ANT(1) = 0; 75 MTO_SQ_ANT(0) = 0; 76 MTO_SQ_ANT(1) = 0; 77 78 MTO_AGING_TIMEOUT() = 0; 79 80 /* The following parameters should be initialized to the values set by user */ 81 MTO_RATE_LEVEL() = 0; 82 MTO_FRAG_TH_LEVEL() = 4; 83 MTO_RTS_THRESHOLD() = MTO_FRAG_TH() + 1; 84 MTO_RTS_THRESHOLD_SETUP() = MTO_FRAG_TH() + 1; 85 MTO_RATE_CHANGE_ENABLE() = 1; 86 MTO_FRAG_CHANGE_ENABLE() = 0; 87 MTO_POWER_CHANGE_ENABLE() = 1; 88 MTO_PREAMBLE_CHANGE_ENABLE() = 1; 89 MTO_RTS_CHANGE_ENABLE() = 0; 90 91 for (i = 0; i < MTO_MAX_DATA_RATE_LEVELS; i++) 92 retryrate_rec[i] = 5; 93 94 MTO_TXFLOWCOUNT() = 0; 95 /* --------- DTO threshold parameters ------------- */ 96 MTOPARA_PERIODIC_CHECK_CYCLE() = 10; 97 MTOPARA_RSSI_TH_FOR_ANTDIV() = 10; 98 MTOPARA_TXCOUNT_TH_FOR_CALC_RATE() = 50; 99 MTOPARA_TXRATE_INC_TH() = 10; 100 MTOPARA_TXRATE_DEC_TH() = 30; 101 MTOPARA_TXRATE_EQ_TH() = 40; 102 MTOPARA_TXRATE_BACKOFF() = 12; 103 MTOPARA_TXRETRYRATE_REDUCE() = 6; 104 if (MTO_TXPOWER_FROM_EEPROM == 0xff) { 105 switch (MTO_HAL()->phy_type) { 106 case RF_AIROHA_2230: 107 case RF_AIROHA_2230S: 108 MTOPARA_TXPOWER_INDEX() = 46; /* MAX-8 @@ Only for AL 2230 */ 109 break; 110 case RF_AIROHA_7230: 111 MTOPARA_TXPOWER_INDEX() = 49; 112 break; 113 case RF_WB_242: 114 MTOPARA_TXPOWER_INDEX() = 10; 115 break; 116 case RF_WB_242_1: 117 MTOPARA_TXPOWER_INDEX() = 24; 118 break; 119 } 120 } else { /* follow the setting from EEPROM */ 121 MTOPARA_TXPOWER_INDEX() = MTO_TXPOWER_FROM_EEPROM; 122 } 123 RFSynthesizer_SetPowerIndex(MTO_HAL(), (u8) MTOPARA_TXPOWER_INDEX()); 124 /* ------------------------------------------------ */ 125 126 /* For RSSI turning -- Cancel load from EEPROM */ 127 MTO_DATA().RSSI_high = -41; 128 MTO_DATA().RSSI_low = -60; 129} 130 131/* =========================================================================== 132 * Description: 133 * If we enable DTO, we will ignore the tx count with different tx rate 134 * from DTO rate. This is because when we adjust DTO tx rate, there could 135 * be some packets in the tx queue with previous tx rate 136 */ 137 138void MTO_SetTxCount(struct wbsoft_priv *adapter, u8 tx_rate, u8 index) 139{ 140 MTO_TXFLOWCOUNT()++; 141 if ((MTO_ENABLE == 1) && (MTO_RATE_CHANGE_ENABLE() == 1)) { 142 if (tx_rate == MTO_DATA_RATE()) { 143 if (index == 0) { 144 if (boSparseTxTraffic) 145 MTO_HAL()->dto_tx_frag_count += MTOPARA_PERIODIC_CHECK_CYCLE(); 146 else 147 MTO_HAL()->dto_tx_frag_count += 1; 148 } else { 149 if (index < 8) { 150 MTO_HAL()->dto_tx_retry_count += index; 151 MTO_HAL()->dto_tx_frag_count += (index + 1); 152 } else { 153 MTO_HAL()->dto_tx_retry_count += 7; 154 MTO_HAL()->dto_tx_frag_count += 7; 155 } 156 } 157 } else if (MTO_DATA_RATE() > 48 && tx_rate == 48) { 158 /* for reducing data rate scheme, do not calculate different data rate. 3 is the reducing data rate at retry. */ 159 if (index < 3) { 160 MTO_HAL()->dto_tx_retry_count += index; 161 MTO_HAL()->dto_tx_frag_count += (index + 1); 162 } else { 163 MTO_HAL()->dto_tx_retry_count += 3; 164 MTO_HAL()->dto_tx_frag_count += 3; 165 } 166 167 } 168 } else { 169 MTO_HAL()->dto_tx_retry_count += index; 170 MTO_HAL()->dto_tx_frag_count += (index + 1); 171 } 172} 173