diff options
Diffstat (limited to 'drivers/staging/winbond/mto.c')
| -rw-r--r-- | drivers/staging/winbond/mto.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/drivers/staging/winbond/mto.c b/drivers/staging/winbond/mto.c new file mode 100644 index 00000000000..b031ecd4f3c --- /dev/null +++ b/drivers/staging/winbond/mto.c @@ -0,0 +1,167 @@ +/* + * ============================================================================ + * 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" +#include "mto.h" + +/* Declare SQ3 to rate and fragmentation threshold table */ +/* Declare fragmentation threshold 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 operation 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; + +/* + * =========================================================================== + * 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); + } +} |