drivers/staging/winbond/mto.c

   1 //============================================================================
   2 //  MTO.C -
   3 //
   4 //  Description:
   5 //    MAC Throughput Optimization for W89C33 802.11g WLAN STA.
   6 //
   7 //    The following MIB attributes or internal variables will be affected
   8 //    while the MTO is being executed:
   9 //       dot11FragmentationThreshold,
  10 //       dot11RTSThreshold,
  11 //       transmission rate and PLCP preamble type,
  12 //       CCA mode,
  13 //       antenna diversity.
  14 //
  15 //  Revision history:
  16 //  --------------------------------------------------------------------------
  17 //           20031227  UN20 Pete Chao
  18 //                     First draft
  19 //  20031229           Turbo                copy from PD43
  20 //  20040210           Kevin                revised
  21 //  Copyright (c) 2003 Winbond Electronics Corp. All rights reserved.
  22 //============================================================================
  23
  24 // LA20040210_DTO kevin
  25 #include "sysdef.h"
  26 #include "sme_api.h"
  27 #include "wbhal_f.h"
  28
  29 // Declare SQ3 to rate and fragmentation threshold table
  30 // Declare fragmentation thresholds table
  31 #define MTO_MAX_FRAG_TH_LEVELS                  5
  32 #define MTO_MAX_DATA_RATE_LEVELS                12
  33
  34 u16 MTO_Frag_Th_Tbl[MTO_MAX_FRAG_TH_LEVELS] =
  35 {
  36     256, 384, 512, 768, 1536
  37 };
  38
  39 // Declare data rate table
  40 //The following table will be changed at anytime if the opration rate supported by AP don't
  41 //match the table
  42 static u8 MTO_Data_Rate_Tbl[MTO_MAX_DATA_RATE_LEVELS] = {
  43     2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108
  44 };
  45
  46 static int TotalTxPkt = 0;
  47 static int TotalTxPktRetry = 0;
  48 static int retryrate_rec[MTO_MAX_DATA_RATE_LEVELS];//this record the retry rate at different data rate
  49
  50 static int PeriodTotalTxPkt = 0;
  51 static int PeriodTotalTxPktRetry = 0;
  52
  53 static u8 boSparseTxTraffic = false;
  54
  55 void MTO_Init(struct wbsoft_priv *adapter);
  56 void TxRateReductionCtrl(struct wbsoft_priv *adapter);
  57 /** 1.1.31.1000 Turbo modify */
  58 void MTO_SetTxCount(struct wbsoft_priv *adapter, u8 t0, u8 index);
  59 void MTO_TxFailed(struct wbsoft_priv *adapter);
  60 void hal_get_dto_para(struct wbsoft_priv *adapter, char *buffer);
  61
  62 //===========================================================================
  63 //  MTO_Init --
  64 //
  65 //  Description:
  66 //    Initialize MTO parameters.
  67 //
  68 //    This function should be invoked during system initialization.
  69 //
  70 //  Arguments:
  71 //    adapter      - The pointer to the Miniport adapter Context
  72 //
  73 //  Return Value:
  74 //    None
  75 //============================================================================
  76 void MTO_Init(struct wbsoft_priv *adapter)
  77 {
  78     int i;
  79
  80     //[WKCHEN]MTO_CCA_MODE_SETUP()= (u8) hal_get_cca_mode(MTO_HAL());
  81     //[WKCHEN]MTO_CCA_MODE()      = MTO_CCA_MODE_SETUP();
  82
  83     //MTO_PREAMBLE_TYPE() = MTO_PREAMBLE_LONG;
  84     MTO_PREAMBLE_TYPE() = MTO_PREAMBLE_SHORT;   // for test
  85
  86     MTO_CNT_ANT(0)      = 0;
  87     MTO_CNT_ANT(1)      = 0;
  88     MTO_SQ_ANT(0)       = 0;
  89     MTO_SQ_ANT(1)       = 0;
  90
  91     MTO_AGING_TIMEOUT() = 0;
  92
  93     // The following parameters should be initialized to the values set by user
  94     //
  95     //MTO_RATE_LEVEL()            = 10;
  96     MTO_RATE_LEVEL()            = 0;
  97     MTO_FRAG_TH_LEVEL()         = 4;
  98     /** 1.1.23.1000 Turbo modify from -1 to +1
  99         MTO_RTS_THRESHOLD()         = MTO_FRAG_TH() - 1;
 100     MTO_RTS_THRESHOLD_SETUP()   = MTO_FRAG_TH() - 1;
 101         */
 102         MTO_RTS_THRESHOLD()         = MTO_FRAG_TH() + 1;
 103     MTO_RTS_THRESHOLD_SETUP()   = MTO_FRAG_TH() + 1;
 104     // 1.1.23.1000 Turbo add for mto change preamble from 0 to 1
 105         MTO_RATE_CHANGE_ENABLE()    = 1;
 106     MTO_FRAG_CHANGE_ENABLE()    = 0;          // 1.1.29.1000 Turbo add don't support frag
 107         //The default valud of ANTDIV_DEFAULT_ON will be decided by EEPROM
 108         //#ifdef ANTDIV_DEFAULT_ON
 109         //#else
 110         //#endif
 111     MTO_POWER_CHANGE_ENABLE()   = 1;
 112         MTO_PREAMBLE_CHANGE_ENABLE()= 1;
 113     MTO_RTS_CHANGE_ENABLE()     = 0;          // 1.1.29.1000 Turbo add don't support frag
 114     // 20040512 Turbo add
 115         //old_antenna[0] = 1;
 116         //old_antenna[1] = 0;
 117         //old_antenna[2] = 1;
 118         //old_antenna[3] = 0;
 119         for (i=0;i<MTO_MAX_DATA_RATE_LEVELS;i++)
 120                 retryrate_rec[i]=5;
 121
 122         MTO_TXFLOWCOUNT() = 0;
 123         //--------- DTO threshold parameters -------------
 124         //MTOPARA_PERIODIC_CHECK_CYCLE() = 50;
 125         MTOPARA_PERIODIC_CHECK_CYCLE() = 10;
 126         MTOPARA_RSSI_TH_FOR_ANTDIV() = 10;
 127         MTOPARA_TXCOUNT_TH_FOR_CALC_RATE() = 50;
 128         MTOPARA_TXRATE_INC_TH() = 10;
 129         MTOPARA_TXRATE_DEC_TH() = 30;
 130         MTOPARA_TXRATE_EQ_TH() = 40;
 131         MTOPARA_TXRATE_BACKOFF() = 12;
 132         MTOPARA_TXRETRYRATE_REDUCE() = 6;
 133         if ( MTO_TXPOWER_FROM_EEPROM == 0xff)
 134         {
 135                 switch( MTO_HAL()->phy_type)
 136                 {
 137                         case RF_AIROHA_2230:
 138                         case RF_AIROHA_2230S: // 20060420 Add this
 139                                 MTOPARA_TXPOWER_INDEX() = 46; // MAX-8 // @@ Only for AL 2230
 140                                 break;
 141                         case RF_AIROHA_7230:
 142                                 MTOPARA_TXPOWER_INDEX() = 49;
 143                                 break;
 144                         case RF_WB_242:
 145                                 MTOPARA_TXPOWER_INDEX() = 10;
 146                                 break;
 147                         case RF_WB_242_1:
 148                                 MTOPARA_TXPOWER_INDEX() = 24; // ->10 20060316.1 modify
 149                                 break;
 150                 }
 151         }
 152         else    //follow the setting from EEPROM
 153                 MTOPARA_TXPOWER_INDEX() = MTO_TXPOWER_FROM_EEPROM;
 154         RFSynthesizer_SetPowerIndex(MTO_HAL(), (u8)MTOPARA_TXPOWER_INDEX());
 155         //------------------------------------------------
 156
 157         // For RSSI turning 20060808.4 Cancel load from EEPROM
 158         MTO_DATA().RSSI_high = -41;
 159         MTO_DATA().RSSI_low = -60;
 160 }
 161
 162 //===========================================================================
 163 //  Description:
 164 //      If we enable DTO, we will ignore the tx count with different tx rate from
 165 //      DTO rate. This is because when we adjust DTO tx rate, there could be some
 166 //      packets in the tx queue with previous tx rate
 167 void MTO_SetTxCount(struct wbsoft_priv *adapter, u8 tx_rate, u8 index)
 168 {
 169         MTO_TXFLOWCOUNT()++;
 170         if ((MTO_ENABLE==1) && (MTO_RATE_CHANGE_ENABLE()==1))
 171         {
 172                 if(tx_rate == MTO_DATA_RATE())
 173                 {
 174                         if (index == 0)
 175                         {
 176                                 if (boSparseTxTraffic)
 177                                         MTO_HAL()->dto_tx_frag_count += MTOPARA_PERIODIC_CHECK_CYCLE();
 178                                 else
 179                                         MTO_HAL()->dto_tx_frag_count += 1;
 180                         }
 181                         else
 182                         {
 183                                 if (index<8)
 184                                 {
 185                                         MTO_HAL()->dto_tx_retry_count += index;
 186                                         MTO_HAL()->dto_tx_frag_count += (index+1);
 187                                 }
 188                                 else
 189                                 {
 190                                         MTO_HAL()->dto_tx_retry_count += 7;
 191                                         MTO_HAL()->dto_tx_frag_count += 7;
 192                                 }
 193                         }
 194                 }
 195                 else if(MTO_DATA_RATE()>48 && tx_rate ==48)
 196                 {//ALFRED
 197                         if (index<3) //for reduciing data rate scheme ,
 198                                          //do not calcu different data rate
 199                                                  //3 is the reducing data rate at retry
 200                         {
 201                                 MTO_HAL()->dto_tx_retry_count += index;
 202                                 MTO_HAL()->dto_tx_frag_count += (index+1);
 203                         }
 204                         else
 205                         {
 206                                 MTO_HAL()->dto_tx_retry_count += 3;
 207                                 MTO_HAL()->dto_tx_frag_count += 3;
 208                         }
 209
 210                 }
 211         }
 212         else
 213         {
 214                 MTO_HAL()->dto_tx_retry_count += index;
 215                 MTO_HAL()->dto_tx_frag_count += (index+1);
 216         }
 217         TotalTxPkt ++;
 218         TotalTxPktRetry += (index+1);
 219
 220         PeriodTotalTxPkt ++;
 221         PeriodTotalTxPktRetry += (index+1);
 222 }