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 "os_common.h"
  26 #include "sme_api.h"
  27 #include "gl_80211.h"
  28 #include "wbhal_f.h"
  29
  30 // Declare SQ3 to rate and fragmentation threshold table
  31 // Declare fragmentation thresholds table
  32 #define MTO_MAX_FRAG_TH_LEVELS                  5
  33 #define MTO_MAX_DATA_RATE_LEVELS                12
  34
  35 u16 MTO_Frag_Th_Tbl[MTO_MAX_FRAG_TH_LEVELS] =
  36 {
  37     256, 384, 512, 768, 1536
  38 };
  39
  40 // Declare data rate table
  41 //The following table will be changed at anytime if the opration rate supported by AP don't
  42 //match the table
  43 static u8 MTO_Data_Rate_Tbl[MTO_MAX_DATA_RATE_LEVELS] = {
  44     2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108
  45 };
  46
  47 static int TotalTxPkt = 0;
  48 static int TotalTxPktRetry = 0;
  49 static int retryrate_rec[MTO_MAX_DATA_RATE_LEVELS];//this record the retry rate at different data rate
  50
  51 static int PeriodTotalTxPkt = 0;
  52 static int PeriodTotalTxPktRetry = 0;
  53
  54 typedef struct
  55 {
  56         s32 RSSI;
  57         u8  TxRate;
  58 }RSSI2RATE;
  59
  60 static u8 boSparseTxTraffic = false;
  61
  62 void MTO_Init(MTO_FUNC_INPUT);
  63 void TxRateReductionCtrl(MTO_FUNC_INPUT);
  64 /** 1.1.31.1000 Turbo modify */
  65 void MTO_SetTxCount(MTO_FUNC_INPUT, u8 t0, u8 index);
  66 void MTO_TxFailed(MTO_FUNC_INPUT);
  67 void hal_get_dto_para(MTO_FUNC_INPUT, char *buffer);
  68
  69 //===========================================================================
  70 //  MTO_Init --
  71 //
  72 //  Description:
  73 //    Initialize MTO parameters.
  74 //
  75 //    This function should be invoked during system initialization.
  76 //
  77 //  Arguments:
  78 //    adapter      - The pointer to the Miniport adapter Context
  79 //
  80 //  Return Value:
  81 //    None
  82 //============================================================================
  83 void MTO_Init(MTO_FUNC_INPUT)
  84 {
  85     int i;
  86         //WBDEBUG(("[MTO] -> MTO_Init()\n"));
  87         //[WKCHEN]pMTOcore_data = pcore_data;
  88 // 20040510 Turbo add for global variable
  89     MTO_TMR_CNT()       = 0;
  90     MTO_TOGGLE_STATE()  = TOGGLE_STATE_IDLE;
  91     MTO_TX_RATE_REDUCTION_STATE() = RATE_CHGSTATE_IDLE;
  92     MTO_BACKOFF_TMR()   = 0;
  93     MTO_LAST_RATE()     = 11;
  94     MTO_CO_EFFICENT()   = 0;
  95
  96     //MTO_TH_FIXANT()     = MTO_DEFAULT_TH_FIXANT;
  97     MTO_TH_CNT()        = MTO_DEFAULT_TH_CNT;
  98     MTO_TH_SQ3()        = MTO_DEFAULT_TH_SQ3;
  99     MTO_TH_IDLE_SLOT()  = MTO_DEFAULT_TH_IDLE_SLOT;
 100     MTO_TH_PR_INTERF()  = MTO_DEFAULT_TH_PR_INTERF;
 101
 102     MTO_TMR_AGING()     = MTO_DEFAULT_TMR_AGING;
 103     MTO_TMR_PERIODIC()  = MTO_DEFAULT_TMR_PERIODIC;
 104
 105     //[WKCHEN]MTO_CCA_MODE_SETUP()= (u8) hal_get_cca_mode(MTO_HAL());
 106     //[WKCHEN]MTO_CCA_MODE()      = MTO_CCA_MODE_SETUP();
 107
 108     //MTO_PREAMBLE_TYPE() = MTO_PREAMBLE_LONG;
 109     MTO_PREAMBLE_TYPE() = MTO_PREAMBLE_SHORT;   // for test
 110
 111     MTO_ANT_SEL()       = hal_get_antenna_number(MTO_HAL());
 112     MTO_ANT_MAC()       = MTO_ANT_SEL();
 113     MTO_CNT_ANT(0)      = 0;
 114     MTO_CNT_ANT(1)      = 0;
 115     MTO_SQ_ANT(0)       = 0;
 116     MTO_SQ_ANT(1)       = 0;
 117     MTO_ANT_DIVERSITY() = MTO_ANTENNA_DIVERSITY_ON;
 118     //CardSet_AntennaDiversity(adapter, MTO_ANT_DIVERSITY());
 119     //PLMESetAntennaDiversity( adapter, MTO_ANT_DIVERSITY());
 120
 121     MTO_AGING_TIMEOUT() = 0;//MTO_TMR_AGING() / MTO_TMR_PERIODIC();
 122
 123     // The following parameters should be initialized to the values set by user
 124     //
 125     //MTO_RATE_LEVEL()            = 10;
 126     MTO_RATE_LEVEL()            = 0;
 127     MTO_FRAG_TH_LEVEL()         = 4;
 128     /** 1.1.23.1000 Turbo modify from -1 to +1
 129         MTO_RTS_THRESHOLD()         = MTO_FRAG_TH() - 1;
 130     MTO_RTS_THRESHOLD_SETUP()   = MTO_FRAG_TH() - 1;
 131         */
 132         MTO_RTS_THRESHOLD()         = MTO_FRAG_TH() + 1;
 133     MTO_RTS_THRESHOLD_SETUP()   = MTO_FRAG_TH() + 1;
 134     // 1.1.23.1000 Turbo add for mto change preamble from 0 to 1
 135         MTO_RATE_CHANGE_ENABLE()    = 1;
 136     MTO_FRAG_CHANGE_ENABLE()    = 0;          // 1.1.29.1000 Turbo add don't support frag
 137         //The default valud of ANTDIV_DEFAULT_ON will be decided by EEPROM
 138         //#ifdef ANTDIV_DEFAULT_ON
 139     //MTO_ANT_DIVERSITY_ENABLE()  = 1;
 140         //#else
 141     //MTO_ANT_DIVERSITY_ENABLE()  = 0;
 142         //#endif
 143     MTO_POWER_CHANGE_ENABLE()   = 1;
 144         MTO_PREAMBLE_CHANGE_ENABLE()= 1;
 145     MTO_RTS_CHANGE_ENABLE()     = 0;          // 1.1.29.1000 Turbo add don't support frag
 146     // 20040512 Turbo add
 147         //old_antenna[0] = 1;
 148         //old_antenna[1] = 0;
 149         //old_antenna[2] = 1;
 150         //old_antenna[3] = 0;
 151         for (i=0;i<MTO_MAX_DATA_RATE_LEVELS;i++)
 152                 retryrate_rec[i]=5;
 153
 154         MTO_TXFLOWCOUNT() = 0;
 155         //--------- DTO threshold parameters -------------
 156         //MTOPARA_PERIODIC_CHECK_CYCLE() = 50;
 157         MTOPARA_PERIODIC_CHECK_CYCLE() = 10;
 158         MTOPARA_RSSI_TH_FOR_ANTDIV() = 10;
 159         MTOPARA_TXCOUNT_TH_FOR_CALC_RATE() = 50;
 160         MTOPARA_TXRATE_INC_TH() = 10;
 161         MTOPARA_TXRATE_DEC_TH() = 30;
 162         MTOPARA_TXRATE_EQ_TH() = 40;
 163         MTOPARA_TXRATE_BACKOFF() = 12;
 164         MTOPARA_TXRETRYRATE_REDUCE() = 6;
 165         if ( MTO_TXPOWER_FROM_EEPROM == 0xff)
 166         {
 167                 switch( MTO_HAL()->phy_type)
 168                 {
 169                         case RF_AIROHA_2230:
 170                         case RF_AIROHA_2230S: // 20060420 Add this
 171                                 MTOPARA_TXPOWER_INDEX() = 46; // MAX-8 // @@ Only for AL 2230
 172                                 break;
 173                         case RF_AIROHA_7230:
 174                                 MTOPARA_TXPOWER_INDEX() = 49;
 175                                 break;
 176                         case RF_WB_242:
 177                                 MTOPARA_TXPOWER_INDEX() = 10;
 178                                 break;
 179                         case RF_WB_242_1:
 180                                 MTOPARA_TXPOWER_INDEX() = 24; // ->10 20060316.1 modify
 181                                 break;
 182                 }
 183         }
 184         else    //follow the setting from EEPROM
 185                 MTOPARA_TXPOWER_INDEX() = MTO_TXPOWER_FROM_EEPROM;
 186         hal_set_rf_power(MTO_HAL(), (u8)MTOPARA_TXPOWER_INDEX());
 187         //------------------------------------------------
 188
 189         // For RSSI turning 20060808.4 Cancel load from EEPROM
 190         MTO_DATA().RSSI_high = -41;
 191         MTO_DATA().RSSI_low = -60;
 192 }
 193
 194 //===========================================================================
 195 //  Description:
 196 //      If we enable DTO, we will ignore the tx count with different tx rate from
 197 //      DTO rate. This is because when we adjust DTO tx rate, there could be some
 198 //      packets in the tx queue with previous tx rate
 199 void MTO_SetTxCount(MTO_FUNC_INPUT, u8 tx_rate, u8 index)
 200 {
 201         MTO_TXFLOWCOUNT()++;
 202         if ((MTO_ENABLE==1) && (MTO_RATE_CHANGE_ENABLE()==1))
 203         {
 204                 if(tx_rate == MTO_DATA_RATE())
 205                 {
 206                         if (index == 0)
 207                         {
 208                                 if (boSparseTxTraffic)
 209                                         MTO_HAL()->dto_tx_frag_count += MTOPARA_PERIODIC_CHECK_CYCLE();
 210                                 else
 211                                         MTO_HAL()->dto_tx_frag_count += 1;
 212                         }
 213                         else
 214                         {
 215                                 if (index<8)
 216                                 {
 217                                         MTO_HAL()->dto_tx_retry_count += index;
 218                                         MTO_HAL()->dto_tx_frag_count += (index+1);
 219                                 }
 220                                 else
 221                                 {
 222                                         MTO_HAL()->dto_tx_retry_count += 7;
 223                                         MTO_HAL()->dto_tx_frag_count += 7;
 224                                 }
 225                         }
 226                 }
 227                 else if(MTO_DATA_RATE()>48 && tx_rate ==48)
 228                 {//ALFRED
 229                         if (index<3) //for reduciing data rate scheme ,
 230                                          //do not calcu different data rate
 231                                                  //3 is the reducing data rate at retry
 232                         {
 233                                 MTO_HAL()->dto_tx_retry_count += index;
 234                                 MTO_HAL()->dto_tx_frag_count += (index+1);
 235                         }
 236                         else
 237                         {
 238                                 MTO_HAL()->dto_tx_retry_count += 3;
 239                                 MTO_HAL()->dto_tx_frag_count += 3;
 240                         }
 241
 242                 }
 243         }
 244         else
 245         {
 246                 MTO_HAL()->dto_tx_retry_count += index;
 247                 MTO_HAL()->dto_tx_frag_count += (index+1);
 248         }
 249         TotalTxPkt ++;
 250         TotalTxPktRetry += (index+1);
 251
 252         PeriodTotalTxPkt ++;
 253         PeriodTotalTxPktRetry += (index+1);
 254 }