2 * ============================================================================
6 * MAC Throughput Optimization for W89C33 802.11g WLAN STA.
8 * The following MIB attributes or internal variables will be affected
9 * while the MTO is being executed:
10 * dot11FragmentationThreshold,
12 * transmission rate and PLCP preamble type,
16 * Copyright (c) 2003 Winbond Electronics Corp. All rights reserved.
17 * ============================================================================
23 #include "wb35reg_f.h"
26 /* Declare SQ3 to rate and fragmentation threshold table */
27 /* Declare fragmentation thresholds table */
28 #define MTO_MAX_FRAG_TH_LEVELS 5
29 #define MTO_MAX_DATA_RATE_LEVELS 12
31 u16 MTO_Frag_Th_Tbl[MTO_MAX_FRAG_TH_LEVELS] = {
32 256, 384, 512, 768, 1536
36 * Declare data rate table:
37 * The following table will be changed at anytime if the opration rate
38 * supported by AP don't match the table
40 static u8 MTO_Data_Rate_Tbl[MTO_MAX_DATA_RATE_LEVELS] = {
41 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108
44 static int TotalTxPkt;
45 static int TotalTxPktRetry;
46 /* this record the retry rate at different data rate */
47 static int retryrate_rec[MTO_MAX_DATA_RATE_LEVELS];
49 static int PeriodTotalTxPkt;
50 static int PeriodTotalTxPktRetry;
52 static u8 boSparseTxTraffic;
54 void MTO_Init(struct wbsoft_priv *adapter);
55 void TxRateReductionCtrl(struct wbsoft_priv *adapter);
56 void MTO_SetTxCount(struct wbsoft_priv *adapter, u8 t0, u8 index);
57 void MTO_TxFailed(struct wbsoft_priv *adapter);
58 void hal_get_dto_para(struct wbsoft_priv *adapter, char *buffer);
61 * ===========================================================================
65 * Initialize MTO parameters.
67 * This function should be invoked during system initialization.
70 * adapter - The pointer to the Miniport adapter Context
71 * ===========================================================================
73 void MTO_Init(struct wbsoft_priv *adapter)
77 MTO_PREAMBLE_TYPE() = MTO_PREAMBLE_SHORT; /* for test */
84 MTO_AGING_TIMEOUT() = 0;
86 /* The following parameters should be initialized to the values set by user */
88 MTO_FRAG_TH_LEVEL() = 4;
89 MTO_RTS_THRESHOLD() = MTO_FRAG_TH() + 1;
90 MTO_RTS_THRESHOLD_SETUP() = MTO_FRAG_TH() + 1;
91 MTO_RATE_CHANGE_ENABLE() = 1;
92 MTO_FRAG_CHANGE_ENABLE() = 0;
93 MTO_POWER_CHANGE_ENABLE() = 1;
94 MTO_PREAMBLE_CHANGE_ENABLE() = 1;
95 MTO_RTS_CHANGE_ENABLE() = 0;
97 for (i = 0; i < MTO_MAX_DATA_RATE_LEVELS; i++)
100 MTO_TXFLOWCOUNT() = 0;
101 /* --------- DTO threshold parameters ------------- */
102 MTOPARA_PERIODIC_CHECK_CYCLE() = 10;
103 MTOPARA_RSSI_TH_FOR_ANTDIV() = 10;
104 MTOPARA_TXCOUNT_TH_FOR_CALC_RATE() = 50;
105 MTOPARA_TXRATE_INC_TH() = 10;
106 MTOPARA_TXRATE_DEC_TH() = 30;
107 MTOPARA_TXRATE_EQ_TH() = 40;
108 MTOPARA_TXRATE_BACKOFF() = 12;
109 MTOPARA_TXRETRYRATE_REDUCE() = 6;
110 if (MTO_TXPOWER_FROM_EEPROM == 0xff) {
111 switch (MTO_HAL()->phy_type) {
113 case RF_AIROHA_2230S:
114 MTOPARA_TXPOWER_INDEX() = 46; /* MAX-8 @@ Only for AL 2230 */
117 MTOPARA_TXPOWER_INDEX() = 49;
120 MTOPARA_TXPOWER_INDEX() = 10;
123 MTOPARA_TXPOWER_INDEX() = 24;
126 } else { /* follow the setting from EEPROM */
127 MTOPARA_TXPOWER_INDEX() = MTO_TXPOWER_FROM_EEPROM;
129 RFSynthesizer_SetPowerIndex(MTO_HAL(), (u8) MTOPARA_TXPOWER_INDEX());
130 /* ------------------------------------------------ */
132 /* For RSSI turning -- Cancel load from EEPROM */
133 MTO_DATA().RSSI_high = -41;
134 MTO_DATA().RSSI_low = -60;
137 /* ===========================================================================
139 * If we enable DTO, we will ignore the tx count with different tx rate
140 * from DTO rate. This is because when we adjust DTO tx rate, there could
141 * be some packets in the tx queue with previous tx rate
144 void MTO_SetTxCount(struct wbsoft_priv *adapter, u8 tx_rate, u8 index)
147 if ((MTO_ENABLE == 1) && (MTO_RATE_CHANGE_ENABLE() == 1)) {
148 if (tx_rate == MTO_DATA_RATE()) {
150 if (boSparseTxTraffic)
151 MTO_HAL()->dto_tx_frag_count += MTOPARA_PERIODIC_CHECK_CYCLE();
153 MTO_HAL()->dto_tx_frag_count += 1;
156 MTO_HAL()->dto_tx_retry_count += index;
157 MTO_HAL()->dto_tx_frag_count += (index + 1);
159 MTO_HAL()->dto_tx_retry_count += 7;
160 MTO_HAL()->dto_tx_frag_count += 7;
163 } else if (MTO_DATA_RATE() > 48 && tx_rate == 48) {
164 /* for reducing data rate scheme, do not calculate different data rate. 3 is the reducing data rate at retry. */
166 MTO_HAL()->dto_tx_retry_count += index;
167 MTO_HAL()->dto_tx_frag_count += (index + 1);
169 MTO_HAL()->dto_tx_retry_count += 3;
170 MTO_HAL()->dto_tx_frag_count += 3;
175 MTO_HAL()->dto_tx_retry_count += index;
176 MTO_HAL()->dto_tx_frag_count += (index + 1);
179 TotalTxPktRetry += (index + 1);
182 PeriodTotalTxPktRetry += (index + 1);