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/*
* ============================================================================
* MTO.C -
*
* Description:
* MAC Throughput Optimization for W89C33 802.11g WLAN STA.
*
* The following MIB attributes or internal variables will be affected
* while the MTO is being executed:
* dot11FragmentationThreshold,
* dot11RTSThreshold,
* transmission rate and PLCP preamble type,
* CCA mode,
* antenna diversity.
*
* Copyright (c) 2003 Winbond Electronics Corp. All rights reserved.
* ============================================================================
*/
#include "sme_api.h"
#include "wbhal.h"
#include "wb35reg_f.h"
#include "core.h"
/* Declare SQ3 to rate and fragmentation threshold table */
/* Declare fragmentation thresholds table */
#define MTO_MAX_FRAG_TH_LEVELS 5
#define MTO_MAX_DATA_RATE_LEVELS 12
u16 MTO_Frag_Th_Tbl[MTO_MAX_FRAG_TH_LEVELS] = {
256, 384, 512, 768, 1536
};
/*
* Declare data rate table:
* The following table will be changed at anytime if the opration rate
* supported by AP don't match the table
*/
static u8 MTO_Data_Rate_Tbl[MTO_MAX_DATA_RATE_LEVELS] = {
2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108
};
/* this record the retry rate at different data rate */
static int retryrate_rec[MTO_MAX_DATA_RATE_LEVELS];
static u8 boSparseTxTraffic;
void MTO_Init(struct wbsoft_priv *adapter);
void TxRateReductionCtrl(struct wbsoft_priv *adapter);
void MTO_SetTxCount(struct wbsoft_priv *adapter, u8 t0, u8 index);
void MTO_TxFailed(struct wbsoft_priv *adapter);
void hal_get_dto_para(struct wbsoft_priv *adapter, char *buffer);
/*
* ===========================================================================
* MTO_Init --
*
* Description:
* Initialize MTO parameters.
*
* This function should be invoked during system initialization.
*
* Arguments:
* adapter - The pointer to the Miniport adapter Context
* ===========================================================================
*/
void MTO_Init(struct wbsoft_priv *adapter)
{
int i;
MTO_PREAMBLE_TYPE() = MTO_PREAMBLE_SHORT; /* for test */
MTO_CNT_ANT(0) = 0;
MTO_CNT_ANT(1) = 0;
MTO_SQ_ANT(0) = 0;
MTO_SQ_ANT(1) = 0;
MTO_AGING_TIMEOUT() = 0;
/* The following parameters should be initialized to the values set by user */
MTO_RATE_LEVEL() = 0;
MTO_FRAG_TH_LEVEL() = 4;
MTO_RTS_THRESHOLD() = MTO_FRAG_TH() + 1;
MTO_RTS_THRESHOLD_SETUP() = MTO_FRAG_TH() + 1;
MTO_RATE_CHANGE_ENABLE() = 1;
MTO_FRAG_CHANGE_ENABLE() = 0;
MTO_POWER_CHANGE_ENABLE() = 1;
MTO_PREAMBLE_CHANGE_ENABLE() = 1;
MTO_RTS_CHANGE_ENABLE() = 0;
for (i = 0; i < MTO_MAX_DATA_RATE_LEVELS; i++)
retryrate_rec[i] = 5;
MTO_TXFLOWCOUNT() = 0;
/* --------- DTO threshold parameters ------------- */
MTOPARA_PERIODIC_CHECK_CYCLE() = 10;
MTOPARA_RSSI_TH_FOR_ANTDIV() = 10;
MTOPARA_TXCOUNT_TH_FOR_CALC_RATE() = 50;
MTOPARA_TXRATE_INC_TH() = 10;
MTOPARA_TXRATE_DEC_TH() = 30;
MTOPARA_TXRATE_EQ_TH() = 40;
MTOPARA_TXRATE_BACKOFF() = 12;
MTOPARA_TXRETRYRATE_REDUCE() = 6;
if (MTO_TXPOWER_FROM_EEPROM == 0xff) {
switch (MTO_HAL()->phy_type) {
case RF_AIROHA_2230:
case RF_AIROHA_2230S:
MTOPARA_TXPOWER_INDEX() = 46; /* MAX-8 @@ Only for AL 2230 */
break;
case RF_AIROHA_7230:
MTOPARA_TXPOWER_INDEX() = 49;
break;
case RF_WB_242:
MTOPARA_TXPOWER_INDEX() = 10;
break;
case RF_WB_242_1:
MTOPARA_TXPOWER_INDEX() = 24;
break;
}
} else { /* follow the setting from EEPROM */
MTOPARA_TXPOWER_INDEX() = MTO_TXPOWER_FROM_EEPROM;
}
RFSynthesizer_SetPowerIndex(MTO_HAL(), (u8) MTOPARA_TXPOWER_INDEX());
/* ------------------------------------------------ */
/* For RSSI turning -- Cancel load from EEPROM */
MTO_DATA().RSSI_high = -41;
MTO_DATA().RSSI_low = -60;
}
/* ===========================================================================
* Description:
* If we enable DTO, we will ignore the tx count with different tx rate
* from DTO rate. This is because when we adjust DTO tx rate, there could
* be some packets in the tx queue with previous tx rate
*/
void MTO_SetTxCount(struct wbsoft_priv *adapter, u8 tx_rate, u8 index)
{
MTO_TXFLOWCOUNT()++;
if ((MTO_ENABLE == 1) && (MTO_RATE_CHANGE_ENABLE() == 1)) {
if (tx_rate == MTO_DATA_RATE()) {
if (index == 0) {
if (boSparseTxTraffic)
MTO_HAL()->dto_tx_frag_count += MTOPARA_PERIODIC_CHECK_CYCLE();
else
MTO_HAL()->dto_tx_frag_count += 1;
} else {
if (index < 8) {
MTO_HAL()->dto_tx_retry_count += index;
MTO_HAL()->dto_tx_frag_count += (index + 1);
} else {
MTO_HAL()->dto_tx_retry_count += 7;
MTO_HAL()->dto_tx_frag_count += 7;
}
}
} else if (MTO_DATA_RATE() > 48 && tx_rate == 48) {
/* for reducing data rate scheme, do not calculate different data rate. 3 is the reducing data rate at retry. */
if (index < 3) {
MTO_HAL()->dto_tx_retry_count += index;
MTO_HAL()->dto_tx_frag_count += (index + 1);
} else {
MTO_HAL()->dto_tx_retry_count += 3;
MTO_HAL()->dto_tx_frag_count += 3;
}
}
} else {
MTO_HAL()->dto_tx_retry_count += index;
MTO_HAL()->dto_tx_frag_count += (index + 1);
}
}
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