//#include "r8180.h" #include "r8180_dm.h" #include "r8180_hw.h" #include "r8180_93cx6.h" //{by amy 080312 // // Description: // Return TRUE if we shall perform High Power Mecahnism, FALSE otherwise. // //+by amy 080312 #define RATE_ADAPTIVE_TIMER_PERIOD 300 bool CheckHighPower(struct net_device *dev) { struct r8180_priv *priv = ieee80211_priv(dev); struct ieee80211_device *ieee = priv->ieee80211; if(!priv->bRegHighPowerMechanism) { return false; } if(ieee->state == IEEE80211_LINKED_SCANNING) { return false; } return true; } // // Description: // Update Tx power level if necessary. // See also DoRxHighPower() and SetTxPowerLevel8185() for reference. // // Note: // The reason why we udpate Tx power level here instead of DoRxHighPower() // is the number of IO to change Tx power is much more than channel TR switch // and they are related to OFDM and MAC registers. // So, we don't want to update it so frequently in per-Rx packet base. // void DoTxHighPower( struct net_device *dev ) { struct r8180_priv *priv = ieee80211_priv(dev); u16 HiPwrUpperTh = 0; u16 HiPwrLowerTh = 0; u8 RSSIHiPwrUpperTh; u8 RSSIHiPwrLowerTh; u8 u1bTmp; char OfdmTxPwrIdx, CckTxPwrIdx; //printk("----> DoTxHighPower()\n"); HiPwrUpperTh = priv->RegHiPwrUpperTh; HiPwrLowerTh = priv->RegHiPwrLowerTh; HiPwrUpperTh = HiPwrUpperTh * 10; HiPwrLowerTh = HiPwrLowerTh * 10; RSSIHiPwrUpperTh = priv->RegRSSIHiPwrUpperTh; RSSIHiPwrLowerTh = priv->RegRSSIHiPwrLowerTh; //lzm add 080826 OfdmTxPwrIdx = priv->chtxpwr_ofdm[priv->ieee80211->current_network.channel]; CckTxPwrIdx = priv->chtxpwr[priv->ieee80211->current_network.channel]; // printk("DoTxHighPower() - UndecoratedSmoothedSS:%d, CurCCKRSSI = %d , bCurCCKPkt= %d \n", priv->UndecoratedSmoothedSS, priv->CurCCKRSSI, priv->bCurCCKPkt ); if((priv->UndecoratedSmoothedSS > HiPwrUpperTh) || (priv->bCurCCKPkt && (priv->CurCCKRSSI > RSSIHiPwrUpperTh))) { // Stevenl suggested that degrade 8dbm in high power sate. 2007-12-04 Isaiah // printk("=====>DoTxHighPower() - High Power - UndecoratedSmoothedSS:%d, HiPwrUpperTh = %d \n", priv->UndecoratedSmoothedSS, HiPwrUpperTh ); priv->bToUpdateTxPwr = true; u1bTmp= read_nic_byte(dev, CCK_TXAGC); // If it never enter High Power. if( CckTxPwrIdx == u1bTmp) { u1bTmp = (u1bTmp > 16) ? (u1bTmp -16): 0; // 8dbm write_nic_byte(dev, CCK_TXAGC, u1bTmp); u1bTmp= read_nic_byte(dev, OFDM_TXAGC); u1bTmp = (u1bTmp > 16) ? (u1bTmp -16): 0; // 8dbm write_nic_byte(dev, OFDM_TXAGC, u1bTmp); } } else if((priv->UndecoratedSmoothedSS < HiPwrLowerTh) && (!priv->bCurCCKPkt || priv->CurCCKRSSI < RSSIHiPwrLowerTh)) { // printk("DoTxHighPower() - lower Power - UndecoratedSmoothedSS:%d, HiPwrUpperTh = %d \n", priv->UndecoratedSmoothedSS, HiPwrLowerTh ); if(priv->bToUpdateTxPwr) { priv->bToUpdateTxPwr = false; //SD3 required. u1bTmp= read_nic_byte(dev, CCK_TXAGC); if(u1bTmp < CckTxPwrIdx) { //u1bTmp = ((u1bTmp+16) > 35) ? 35: (u1bTmp+16); // 8dbm //write_nic_byte(dev, CCK_TXAGC, u1bTmp); write_nic_byte(dev, CCK_TXAGC, CckTxPwrIdx); } u1bTmp= read_nic_byte(dev, OFDM_TXAGC); if(u1bTmp < OfdmTxPwrIdx) { //u1bTmp = ((u1bTmp+16) > 35) ? 35: (u1bTmp+16); // 8dbm //write_nic_byte(dev, OFDM_TXAGC, u1bTmp); write_nic_byte(dev, OFDM_TXAGC, OfdmTxPwrIdx); } } } //printk("<---- DoTxHighPower()\n"); } // // Description: // Callback function of UpdateTxPowerWorkItem. // Because of some event happened, e.g. CCX TPC, High Power Mechanism, // We update Tx power of current channel again. // void rtl8180_tx_pw_wq (struct work_struct *work) { // struct r8180_priv *priv = container_of(work, struct r8180_priv, watch_dog_wq); // struct ieee80211_device * ieee = (struct ieee80211_device*) // container_of(work, struct ieee80211_device, watch_dog_wq); struct delayed_work *dwork = to_delayed_work(work); struct ieee80211_device *ieee = container_of(dwork,struct ieee80211_device,tx_pw_wq); struct net_device *dev = ieee->dev; // printk("----> UpdateTxPowerWorkItemCallback()\n"); DoTxHighPower(dev); // printk("<---- UpdateTxPowerWorkItemCallback()\n"); } // // Description: // Return TRUE if we shall perform DIG Mecahnism, FALSE otherwise. // bool CheckDig( struct net_device *dev ) { struct r8180_priv *priv = ieee80211_priv(dev); struct ieee80211_device *ieee = priv->ieee80211; if(!priv->bDigMechanism) return false; if(ieee->state != IEEE80211_LINKED) return false; //if(priv->CurrentOperaRate < 36) // Schedule Dig under all OFDM rates. By Bruce, 2007-06-01. if((priv->ieee80211->rate/5) < 36) // Schedule Dig under all OFDM rates. By Bruce, 2007-06-01. return false; return true; } // // Description: // Implementation of DIG for Zebra and Zebra2. // void DIG_Zebra( struct net_device *dev ) { struct r8180_priv *priv = ieee80211_priv(dev); u16 CCKFalseAlarm, OFDMFalseAlarm; u16 OfdmFA1, OfdmFA2; int InitialGainStep = 7; // The number of initial gain stages. int LowestGainStage = 4; // The capable lowest stage of performing dig workitem. u32 AwakePeriodIn2Sec=0; //printk("---------> DIG_Zebra()\n"); CCKFalseAlarm = (u16)(priv->FalseAlarmRegValue & 0x0000ffff); OFDMFalseAlarm = (u16)((priv->FalseAlarmRegValue >> 16) & 0x0000ffff); OfdmFA1 = 0x15; OfdmFA2 = ((u16)(priv->RegDigOfdmFaUpTh)) << 8; // printk("DIG**********CCK False Alarm: %#X \n",CCKFalseAlarm); // printk("DIG**********OFDM False Alarm: %#X \n",OFDMFalseAlarm); // The number of initial gain steps is different, by Bruce, 2007-04-13. if (priv->InitialGain == 0 ) //autoDIG { // Advised from SD3 DZ priv->InitialGain = 4; // In 87B, m74dBm means State 4 (m82dBm) } { // Advised from SD3 DZ OfdmFA1 = 0x20; } #if 1 //lzm reserved 080826 AwakePeriodIn2Sec = (2000-priv ->DozePeriodInPast2Sec); //printk("&&& DozePeriod=%d AwakePeriod=%d\n", priv->DozePeriodInPast2Sec, AwakePeriodIn2Sec); priv ->DozePeriodInPast2Sec=0; if(AwakePeriodIn2Sec) { //RT_TRACE(COMP_DIG, DBG_TRACE, ("DIG: AwakePeriodIn2Sec(%d) - FATh(0x%X , 0x%X) ->",AwakePeriodIn2Sec, OfdmFA1, OfdmFA2)); // adjuest DIG threshold. OfdmFA1 = (u16)((OfdmFA1*AwakePeriodIn2Sec) / 2000) ; OfdmFA2 = (u16)((OfdmFA2*AwakePeriodIn2Sec) / 2000) ; //RT_TRACE(COMP_DIG, DBG_TRACE, ("( 0x%X , 0x%X)\n", OfdmFA1, OfdmFA2)); } else { ;//RT_TRACE(COMP_DIG, DBG_WARNING, ("ERROR!! AwakePeriodIn2Sec should not be ZERO!!\n")); } #endif InitialGainStep = 8; LowestGainStage = priv->RegBModeGainStage; // Lowest gain stage. if (OFDMFalseAlarm > OfdmFA1) { if (OFDMFalseAlarm > OfdmFA2) { priv->DIG_NumberFallbackVote++; if (priv->DIG_NumberFallbackVote >1) { //serious OFDM False Alarm, need fallback if (priv->InitialGain < InitialGainStep) { priv->InitialGainBackUp= priv->InitialGain; priv->InitialGain = (priv->InitialGain + 1); // printk("DIG**********OFDM False Alarm: %#X, OfdmFA1: %#X, OfdmFA2: %#X\n", OFDMFalseAlarm, OfdmFA1, OfdmFA2); // printk("DIG+++++++ fallback OFDM:%d \n", priv->InitialGain); UpdateInitialGain(dev); } priv->DIG_NumberFallbackVote = 0; priv->DIG_NumberUpgradeVote=0; } } else { if (priv->DIG_NumberFallbackVote) priv->DIG_NumberFallbackVote--; } priv->DIG_NumberUpgradeVote=0; } else { if (priv->DIG_NumberFallbackVote) priv->DIG_NumberFallbackVote--; priv->DIG_NumberUpgradeVote++; if (priv->DIG_NumberUpgradeVote>9) { if (priv->InitialGain > LowestGainStage) // In 87B, m78dBm means State 4 (m864dBm) { priv->InitialGainBackUp= priv->InitialGain; priv->InitialGain = (priv->InitialGain - 1); // printk("DIG**********OFDM False Alarm: %#X, OfdmFA1: %#X, OfdmFA2: %#X\n", OFDMFalseAlarm, OfdmFA1, OfdmFA2); // printk("DIG--------- Upgrade OFDM:%d \n", priv->InitialGain); UpdateInitialGain(dev); } priv->DIG_NumberFallbackVote = 0; priv->DIG_NumberUpgradeVote=0; } } // printk("DIG+++++++ OFDM:%d\n", priv->InitialGain); //printk("<--------- DIG_Zebra()\n"); } // // Description: // Dispatch DIG implementation according to RF. // void DynamicInitGain(struct net_device *dev) { DIG_Zebra(dev); } void rtl8180_hw_dig_wq (struct work_struct *work) { struct delayed_work *dwork = to_delayed_work(work); struct ieee80211_device *ieee = container_of(dwork,struct ieee80211_device,hw_dig_wq); struct net_device *dev = ieee->dev; struct r8180_priv *priv = ieee80211_priv(dev); // Read CCK and OFDM False Alarm. priv->FalseAlarmRegValue = read_nic_dword(dev, CCK_FALSE_ALARM); // Adjust Initial Gain dynamically. DynamicInitGain(dev); } int IncludedInSupportedRates( struct r8180_priv *priv, u8 TxRate ) { u8 rate_len; u8 rate_ex_len; u8 RateMask = 0x7F; u8 idx; unsigned short Found = 0; u8 NaiveTxRate = TxRate&RateMask; rate_len = priv->ieee80211->current_network.rates_len; rate_ex_len = priv->ieee80211->current_network.rates_ex_len; for( idx=0; idx< rate_len; idx++ ) { if( (priv->ieee80211->current_network.rates[idx] & RateMask) == NaiveTxRate ) { Found = 1; goto found_rate; } } for( idx=0; idx< rate_ex_len; idx++ ) { if( (priv->ieee80211->current_network.rates_ex[idx] & RateMask) == NaiveTxRate ) { Found = 1; goto found_rate; } } return Found; found_rate: return Found; } // // Description: // Get the Tx rate one degree up form the input rate in the supported rates. // Return the upgrade rate if it is successed, otherwise return the input rate. // By Bruce, 2007-06-05. // u8 GetUpgradeTxRate( struct net_device *dev, u8 rate ) { struct r8180_priv *priv = ieee80211_priv(dev); u8 UpRate; // Upgrade 1 degree. switch(rate) { case 108: // Up to 54Mbps. UpRate = 108; break; case 96: // Up to 54Mbps. UpRate = 108; break; case 72: // Up to 48Mbps. UpRate = 96; break; case 48: // Up to 36Mbps. UpRate = 72; break; case 36: // Up to 24Mbps. UpRate = 48; break; case 22: // Up to 18Mbps. UpRate = 36; break; case 11: // Up to 11Mbps. UpRate = 22; break; case 4: // Up to 5.5Mbps. UpRate = 11; break; case 2: // Up to 2Mbps. UpRate = 4; break; default: printk("GetUpgradeTxRate(): Input Tx Rate(%d) is undefined!\n", rate); return rate; } // Check if the rate is valid. if(IncludedInSupportedRates(priv, UpRate)) { // printk("GetUpgradeTxRate(): GetUpgrade Tx rate(%d) from %d !\n", UpRate, priv->CurrentOperaRate); return UpRate; } else { //printk("GetUpgradeTxRate(): Tx rate (%d) is not in supported rates\n", UpRate); return rate; } return rate; } // // Description: // Get the Tx rate one degree down form the input rate in the supported rates. // Return the degrade rate if it is successed, otherwise return the input rate. // By Bruce, 2007-06-05. // u8 GetDegradeTxRate( struct net_device *dev, u8 rate ) { struct r8180_priv *priv = ieee80211_priv(dev); u8 DownRate; // Upgrade 1 degree. switch(rate) { case 108: // Down to 48Mbps. DownRate = 96; break; case 96: // Down to 36Mbps. DownRate = 72; break; case 72: // Down to 24Mbps. DownRate = 48; break; case 48: // Down to 18Mbps. DownRate = 36; break; case 36: // Down to 11Mbps. DownRate = 22; break; case 22: // Down to 5.5Mbps. DownRate = 11; break; case 11: // Down to 2Mbps. DownRate = 4; break; case 4: // Down to 1Mbps. DownRate = 2; break; case 2: // Down to 1Mbps. DownRate = 2; break; default: printk("GetDegradeTxRate(): Input Tx Rate(%d) is undefined!\n", rate); return rate; } // Check if the rate is valid. if(IncludedInSupportedRates(priv, DownRate)) { // printk("GetDegradeTxRate(): GetDegrade Tx rate(%d) from %d!\n", DownRate, priv->CurrentOperaRate); return DownRate; } else { //printk("GetDegradeTxRate(): Tx rate (%d) is not in supported rates\n", DownRate); return rate; } return rate; } // // Helper function to determine if specified data rate is // CCK rate. // 2005.01.25, by rcnjko. // bool MgntIsCckRate( u16 rate ) { bool bReturn = false; if((rate <= 22) && (rate != 12) && (rate != 18)) { bReturn = true; } return bReturn; } // // Description: // Tx Power tracking mechanism routine on 87SE. // Created by Roger, 2007.12.11. // void TxPwrTracking87SE( struct net_device *dev ) { struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev); u8 tmpu1Byte, CurrentThermal, Idx; char CckTxPwrIdx, OfdmTxPwrIdx; //u32 u4bRfReg; tmpu1Byte = read_nic_byte(dev, EN_LPF_CAL); CurrentThermal = (tmpu1Byte & 0xf0)>>4; //[ 7:4]: thermal meter indication. CurrentThermal = (CurrentThermal>0x0c)? 0x0c:CurrentThermal;//lzm add 080826 //printk("TxPwrTracking87SE(): CurrentThermal(%d)\n", CurrentThermal); if( CurrentThermal != priv->ThermalMeter) { // printk("TxPwrTracking87SE(): Thermal meter changed!!!\n"); // Update Tx Power level on each channel. for(Idx = 1; Idx<15; Idx++) { CckTxPwrIdx = priv->chtxpwr[Idx]; OfdmTxPwrIdx = priv->chtxpwr_ofdm[Idx]; if( CurrentThermal > priv->ThermalMeter ) { // higher thermal meter. CckTxPwrIdx += (CurrentThermal - priv->ThermalMeter)*2; OfdmTxPwrIdx += (CurrentThermal - priv->ThermalMeter)*2; if(CckTxPwrIdx >35) CckTxPwrIdx = 35; // Force TxPower to maximal index. if(OfdmTxPwrIdx >35) OfdmTxPwrIdx = 35; } else { // lower thermal meter. CckTxPwrIdx -= (priv->ThermalMeter - CurrentThermal)*2; OfdmTxPwrIdx -= (priv->ThermalMeter - CurrentThermal)*2; if(CckTxPwrIdx <0) CckTxPwrIdx = 0; if(OfdmTxPwrIdx <0) OfdmTxPwrIdx = 0; } // Update TxPower level on CCK and OFDM resp. priv->chtxpwr[Idx] = CckTxPwrIdx; priv->chtxpwr_ofdm[Idx] = OfdmTxPwrIdx; } // Update TxPower level immediately. rtl8225z2_SetTXPowerLevel(dev, priv->ieee80211->current_network.channel); } priv->ThermalMeter = CurrentThermal; } void StaRateAdaptive87SE( struct net_device *dev ) { struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev); unsigned long CurrTxokCnt; u16 CurrRetryCnt; u16 CurrRetryRate; //u16 i,idx; unsigned long CurrRxokCnt; bool bTryUp = false; bool bTryDown = false; u8 TryUpTh = 1; u8 TryDownTh = 2; u32 TxThroughput; long CurrSignalStrength; bool bUpdateInitialGain = false; u8 u1bOfdm=0, u1bCck = 0; char OfdmTxPwrIdx, CckTxPwrIdx; priv->RateAdaptivePeriod= RATE_ADAPTIVE_TIMER_PERIOD; CurrRetryCnt = priv->CurrRetryCnt; CurrTxokCnt = priv->NumTxOkTotal - priv->LastTxokCnt; CurrRxokCnt = priv->ieee80211->NumRxOkTotal - priv->LastRxokCnt; CurrSignalStrength = priv->Stats_RecvSignalPower; TxThroughput = (u32)(priv->NumTxOkBytesTotal - priv->LastTxOKBytes); priv->LastTxOKBytes = priv->NumTxOkBytesTotal; priv->CurrentOperaRate = priv->ieee80211->rate/5; //printk("priv->CurrentOperaRate is %d\n",priv->CurrentOperaRate); //2 Compute retry ratio. if (CurrTxokCnt>0) { CurrRetryRate = (u16)(CurrRetryCnt*100/CurrTxokCnt); } else { // It may be serious retry. To distinguish serious retry or no packets modified by Bruce CurrRetryRate = (u16)(CurrRetryCnt*100/1); } // // Added by Roger, 2007.01.02. // For debug information. // //printk("\n(1) pHalData->LastRetryRate: %d \n",priv->LastRetryRate); //printk("(2) RetryCnt = %d \n", CurrRetryCnt); //printk("(3) TxokCnt = %d \n", CurrTxokCnt); //printk("(4) CurrRetryRate = %d \n", CurrRetryRate); //printk("(5) CurrSignalStrength = %d \n",CurrSignalStrength); //printk("(6) TxThroughput is %d\n",TxThroughput); //printk("priv->NumTxOkBytesTotal is %d\n",priv->NumTxOkBytesTotal); priv->LastRetryCnt = priv->CurrRetryCnt; priv->LastTxokCnt = priv->NumTxOkTotal; priv->LastRxokCnt = priv->ieee80211->NumRxOkTotal; priv->CurrRetryCnt = 0; //2No Tx packets, return to init_rate or not? if (CurrRetryRate==0 && CurrTxokCnt == 0) { // //After 9 (30*300ms) seconds in this condition, we try to raise rate. // priv->TryupingCountNoData++; // printk("No Tx packets, TryupingCountNoData(%d)\n", priv->TryupingCountNoData); //[TRC Dell Lab] Extend raised period from 4.5sec to 9sec, Isaiah 2008-02-15 18:00 if (priv->TryupingCountNoData>30) { priv->TryupingCountNoData = 0; priv->CurrentOperaRate = GetUpgradeTxRate(dev, priv->CurrentOperaRate); // Reset Fail Record priv->LastFailTxRate = 0; priv->LastFailTxRateSS = -200; priv->FailTxRateCount = 0; } goto SetInitialGain; } else { priv->TryupingCountNoData=0; //Reset trying up times. } // // For Netgear case, I comment out the following signal strength estimation, // which can results in lower rate to transmit when sample is NOT enough (e.g. PING request). // 2007.04.09, by Roger. // // // Restructure rate adaptive as the following main stages: // (1) Add retry threshold in 54M upgrading condition with signal strength. // (2) Add the mechanism to degrade to CCK rate according to signal strength // and retry rate. // (3) Remove all Initial Gain Updates over OFDM rate. To avoid the complicated // situation, Initial Gain Update is upon on DIG mechanism except CCK rate. // (4) Add the mehanism of trying to upgrade tx rate. // (5) Record the information of upping tx rate to avoid trying upping tx rate constantly. // By Bruce, 2007-06-05. // // // 11Mbps or 36Mbps // Check more times in these rate(key rates). // if(priv->CurrentOperaRate == 22 || priv->CurrentOperaRate == 72) { TryUpTh += 9; } // // Let these rates down more difficult. // if(MgntIsCckRate(priv->CurrentOperaRate) || priv->CurrentOperaRate == 36) { TryDownTh += 1; } //1 Adjust Rate. if (priv->bTryuping == true) { //2 For Test Upgrading mechanism // Note: // Sometimes the throughput is upon on the capability bwtween the AP and NIC, // thus the low data rate does not improve the performance. // We randomly upgrade the data rate and check if the retry rate is improved. // Upgrading rate did not improve the retry rate, fallback to the original rate. if ( (CurrRetryRate > 25) && TxThroughput < priv->LastTxThroughput) { //Not necessary raising rate, fall back rate. bTryDown = true; //printk("case1-1: Not necessary raising rate, fall back rate....\n"); //printk("case1-1: pMgntInfo->CurrentOperaRate =%d, TxThroughput = %d, LastThroughput = %d\n", // priv->CurrentOperaRate, TxThroughput, priv->LastTxThroughput); } else { priv->bTryuping = false; } } else if (CurrSignalStrength > -47 && (CurrRetryRate < 50)) { //2For High Power // // Added by Roger, 2007.04.09. // Return to highest data rate, if signal strength is good enough. // SignalStrength threshold(-50dbm) is for RTL8186. // Revise SignalStrength threshold to -51dbm. // // Also need to check retry rate for safety, by Bruce, 2007-06-05. if(priv->CurrentOperaRate != priv->ieee80211->current_network.HighestOperaRate ) { bTryUp = true; // Upgrade Tx Rate directly. priv->TryupingCount += TryUpTh; } // printk("case2: StaRateAdaptive87SE: Power(%d) is high enough!!. \n", CurrSignalStrength); } else if(CurrTxokCnt > 9 && CurrTxokCnt< 100 && CurrRetryRate >= 600) { //2 For Serious Retry // // Traffic is not busy but our Tx retry is serious. // bTryDown = true; // Let Rate Mechanism to degrade tx rate directly. priv->TryDownCountLowData += TryDownTh; // printk("case3: RA: Tx Retry is serious. Degrade Tx Rate to %d directly...\n", priv->CurrentOperaRate); } else if ( priv->CurrentOperaRate == 108 ) { //2For 54Mbps // Air Link if ( (CurrRetryRate>26)&&(priv->LastRetryRate>25)) // if ( (CurrRetryRate>40)&&(priv->LastRetryRate>39)) { //Down to rate 48Mbps. bTryDown = true; } // Cable Link else if ( (CurrRetryRate>17)&&(priv->LastRetryRate>16) && (CurrSignalStrength > -72)) // else if ( (CurrRetryRate>17)&&(priv->LastRetryRate>16) && (CurrSignalStrength > -72)) { //Down to rate 48Mbps. bTryDown = true; } if(bTryDown && (CurrSignalStrength < -75)) //cable link { priv->TryDownCountLowData += TryDownTh; } //printk("case4---54M \n"); } else if ( priv->CurrentOperaRate == 96 ) { //2For 48Mbps //Air Link if ( ((CurrRetryRate>48) && (priv->LastRetryRate>47))) // if ( ((CurrRetryRate>65) && (priv->LastRetryRate>64))) { //Down to rate 36Mbps. bTryDown = true; } //Cable Link else if ( ((CurrRetryRate>21) && (priv->LastRetryRate>20)) && (CurrSignalStrength > -74)) { //Down to rate 36Mbps. bTryDown = true; } else if((CurrRetryRate> (priv->LastRetryRate + 50 )) && (priv->FailTxRateCount >2 )) // else if((CurrRetryRate> (priv->LastRetryRate + 70 )) && (priv->FailTxRateCount >2 )) { bTryDown = true; priv->TryDownCountLowData += TryDownTh; } else if ( (CurrRetryRate<8) && (priv->LastRetryRate<8) ) //TO DO: need to consider (RSSI) // else if ( (CurrRetryRate<28) && (priv->LastRetryRate<8) ) { bTryUp = true; } if(bTryDown && (CurrSignalStrength < -75)) { priv->TryDownCountLowData += TryDownTh; } //printk("case5---48M \n"); } else if ( priv->CurrentOperaRate == 72 ) { //2For 36Mbps if ( (CurrRetryRate>43) && (priv->LastRetryRate>41)) // if ( (CurrRetryRate>60) && (priv->LastRetryRate>59)) { //Down to rate 24Mbps. bTryDown = true; } else if((CurrRetryRate> (priv->LastRetryRate + 50 )) && (priv->FailTxRateCount >2 )) // else if((CurrRetryRate> (priv->LastRetryRate + 70 )) && (priv->FailTxRateCount >2 )) { bTryDown = true; priv->TryDownCountLowData += TryDownTh; } else if ( (CurrRetryRate<15) && (priv->LastRetryRate<16)) //TO DO: need to consider (RSSI) // else if ( (CurrRetryRate<35) && (priv->LastRetryRate<36)) { bTryUp = true; } if(bTryDown && (CurrSignalStrength < -80)) { priv->TryDownCountLowData += TryDownTh; } //printk("case6---36M \n"); } else if ( priv->CurrentOperaRate == 48 ) { //2For 24Mbps // Air Link if ( ((CurrRetryRate>63) && (priv->LastRetryRate>62))) // if ( ((CurrRetryRate>83) && (priv->LastRetryRate>82))) { //Down to rate 18Mbps. bTryDown = true; } //Cable Link else if ( ((CurrRetryRate>33) && (priv->LastRetryRate>32)) && (CurrSignalStrength > -82) ) // else if ( ((CurrRetryRate>50) && (priv->LastRetryRate>49)) && (CurrSignalStrength > -82) ) { //Down to rate 18Mbps. bTryDown = true; } else if((CurrRetryRate> (priv->LastRetryRate + 50 )) && (priv->FailTxRateCount >2 )) // else if((CurrRetryRate> (priv->LastRetryRate + 70 )) && (priv->FailTxRateCount >2 )) { bTryDown = true; priv->TryDownCountLowData += TryDownTh; } else if ( (CurrRetryRate<20) && (priv->LastRetryRate<21)) //TO DO: need to consider (RSSI) // else if ( (CurrRetryRate<40) && (priv->LastRetryRate<41)) { bTryUp = true; } if(bTryDown && (CurrSignalStrength < -82)) { priv->TryDownCountLowData += TryDownTh; } //printk("case7---24M \n"); } else if ( priv->CurrentOperaRate == 36 ) { //2For 18Mbps // original (109, 109) //[TRC Dell Lab] (90, 91), Isaiah 2008-02-18 23:24 // (85, 86), Isaiah 2008-02-18 24:00 if ( ((CurrRetryRate>85) && (priv->LastRetryRate>86))) // if ( ((CurrRetryRate>115) && (priv->LastRetryRate>116))) { //Down to rate 11Mbps. bTryDown = true; } //[TRC Dell Lab] Isaiah 2008-02-18 23:24 else if((CurrRetryRate> (priv->LastRetryRate + 50 )) && (priv->FailTxRateCount >2 )) // else if((CurrRetryRate> (priv->LastRetryRate + 70 )) && (priv->FailTxRateCount >2 )) { bTryDown = true; priv->TryDownCountLowData += TryDownTh; } else if ( (CurrRetryRate<22) && (priv->LastRetryRate<23)) //TO DO: need to consider (RSSI) // else if ( (CurrRetryRate<42) && (priv->LastRetryRate<43)) { bTryUp = true; } //printk("case8---18M \n"); } else if ( priv->CurrentOperaRate == 22 ) { //2For 11Mbps if (CurrRetryRate>95) // if (CurrRetryRate>155) { bTryDown = true; } else if ( (CurrRetryRate<29) && (priv->LastRetryRate <30) )//TO DO: need to consider (RSSI) // else if ( (CurrRetryRate<49) && (priv->LastRetryRate <50) ) { bTryUp = true; } //printk("case9---11M \n"); } else if ( priv->CurrentOperaRate == 11 ) { //2For 5.5Mbps if (CurrRetryRate>149) // if (CurrRetryRate>189) { bTryDown = true; } else if ( (CurrRetryRate<60) && (priv->LastRetryRate < 65)) // else if ( (CurrRetryRate<80) && (priv->LastRetryRate < 85)) { bTryUp = true; } //printk("case10---5.5M \n"); } else if ( priv->CurrentOperaRate == 4 ) { //2For 2 Mbps if((CurrRetryRate>99) && (priv->LastRetryRate>99)) // if((CurrRetryRate>199) && (priv->LastRetryRate>199)) { bTryDown = true; } else if ( (CurrRetryRate < 65) && (priv->LastRetryRate < 70)) // else if ( (CurrRetryRate < 85) && (priv->LastRetryRate < 90)) { bTryUp = true; } //printk("case11---2M \n"); } else if ( priv->CurrentOperaRate == 2 ) { //2For 1 Mbps if( (CurrRetryRate<70) && (priv->LastRetryRate<75)) // if( (CurrRetryRate<90) && (priv->LastRetryRate<95)) { bTryUp = true; } //printk("case12---1M \n"); } if(bTryUp && bTryDown) printk("StaRateAdaptive87B(): Tx Rate tried upping and downing simultaneously!\n"); //1 Test Upgrading Tx Rate // Sometimes the cause of the low throughput (high retry rate) is the compatibility between the AP and NIC. // To test if the upper rate may cause lower retry rate, this mechanism randomly occurs to test upgrading tx rate. if(!bTryUp && !bTryDown && (priv->TryupingCount == 0) && (priv->TryDownCountLowData == 0) && priv->CurrentOperaRate != priv->ieee80211->current_network.HighestOperaRate && priv->FailTxRateCount < 2) { if(jiffies% (CurrRetryRate + 101) == 0) { bTryUp = true; priv->bTryuping = true; //printk("StaRateAdaptive87SE(): Randomly try upgrading...\n"); } } //1 Rate Mechanism if(bTryUp) { priv->TryupingCount++; priv->TryDownCountLowData = 0; { // printk("UP: pHalData->TryupingCount = %d\n", priv->TryupingCount); // printk("UP: TryUpTh(%d)+ (FailTxRateCount(%d))^2 =%d\n", // TryUpTh, priv->FailTxRateCount, (TryUpTh + priv->FailTxRateCount * priv->FailTxRateCount) ); // printk("UP: pHalData->bTryuping=%d\n", priv->bTryuping); } // // Check more times if we need to upgrade indeed. // Because the largest value of pHalData->TryupingCount is 0xFFFF and // the largest value of pHalData->FailTxRateCount is 0x14, // this condition will be satisfied at most every 2 min. // if((priv->TryupingCount > (TryUpTh + priv->FailTxRateCount * priv->FailTxRateCount)) || (CurrSignalStrength > priv->LastFailTxRateSS) || priv->bTryuping) { priv->TryupingCount = 0; // // When transferring from CCK to OFDM, DIG is an important issue. // if(priv->CurrentOperaRate == 22) bUpdateInitialGain = true; // The difference in throughput between 48Mbps and 36Mbps is 8M. // So, we must be carefully in this rate scale. Isaiah 2008-02-15. // if( ((priv->CurrentOperaRate == 72) || (priv->CurrentOperaRate == 48) || (priv->CurrentOperaRate == 36)) && (priv->FailTxRateCount > 2) ) priv->RateAdaptivePeriod= (RATE_ADAPTIVE_TIMER_PERIOD/2); // (1)To avoid upgrade frequently to the fail tx rate, add the FailTxRateCount into the threshold. // (2)If the signal strength is increased, it may be able to upgrade. priv->CurrentOperaRate = GetUpgradeTxRate(dev, priv->CurrentOperaRate); // printk("StaRateAdaptive87SE(): Upgrade Tx Rate to %d\n", priv->CurrentOperaRate); //[TRC Dell Lab] Bypass 12/9/6, Isaiah 2008-02-18 20:00 if(priv->CurrentOperaRate ==36) { priv->bUpdateARFR=true; write_nic_word(dev, ARFR, 0x0F8F); //bypass 12/9/6 // printk("UP: ARFR=0xF8F\n"); } else if(priv->bUpdateARFR) { priv->bUpdateARFR=false; write_nic_word(dev, ARFR, 0x0FFF); //set 1M ~ 54Mbps. // printk("UP: ARFR=0xFFF\n"); } // Update Fail Tx rate and count. if(priv->LastFailTxRate != priv->CurrentOperaRate) { priv->LastFailTxRate = priv->CurrentOperaRate; priv->FailTxRateCount = 0; priv->LastFailTxRateSS = -200; // Set lowest power. } } } else { if(priv->TryupingCount > 0) priv->TryupingCount --; } if(bTryDown) { priv->TryDownCountLowData++; priv->TryupingCount = 0; { // printk("DN: pHalData->TryDownCountLowData = %d\n",priv->TryDownCountLowData); // printk("DN: TryDownTh =%d\n", TryDownTh); // printk("DN: pHalData->bTryuping=%d\n", priv->bTryuping); } //Check if Tx rate can be degraded or Test trying upgrading should fallback. if(priv->TryDownCountLowData > TryDownTh || priv->bTryuping) { priv->TryDownCountLowData = 0; priv->bTryuping = false; // Update fail information. if(priv->LastFailTxRate == priv->CurrentOperaRate) { priv->FailTxRateCount ++; // Record the Tx fail rate signal strength. if(CurrSignalStrength > priv->LastFailTxRateSS) { priv->LastFailTxRateSS = CurrSignalStrength; } } else { priv->LastFailTxRate = priv->CurrentOperaRate; priv->FailTxRateCount = 1; priv->LastFailTxRateSS = CurrSignalStrength; } priv->CurrentOperaRate = GetDegradeTxRate(dev, priv->CurrentOperaRate); // Reduce chariot training time at weak signal strength situation. SD3 ED demand. //[TRC Dell Lab] Revise Signal Threshold from -75 to -80 , Isaiah 2008-02-18 20:00 if( (CurrSignalStrength < -80) && (priv->CurrentOperaRate > 72 )) { priv->CurrentOperaRate = 72; // printk("DN: weak signal strength (%d), degrade to 36Mbps\n", CurrSignalStrength); } //[TRC Dell Lab] Bypass 12/9/6, Isaiah 2008-02-18 20:00 if(priv->CurrentOperaRate ==36) { priv->bUpdateARFR=true; write_nic_word(dev, ARFR, 0x0F8F); //bypass 12/9/6 // printk("DN: ARFR=0xF8F\n"); } else if(priv->bUpdateARFR) { priv->bUpdateARFR=false; write_nic_word(dev, ARFR, 0x0FFF); //set 1M ~ 54Mbps. // printk("DN: ARFR=0xFFF\n"); } // // When it is CCK rate, it may need to update initial gain to receive lower power packets. // if(MgntIsCckRate(priv->CurrentOperaRate)) { bUpdateInitialGain = true; } // printk("StaRateAdaptive87SE(): Degrade Tx Rate to %d\n", priv->CurrentOperaRate); } } else { if(priv->TryDownCountLowData > 0) priv->TryDownCountLowData --; } // Keep the Tx fail rate count to equal to 0x15 at most. // Reduce the fail count at least to 10 sec if tx rate is tending stable. if(priv->FailTxRateCount >= 0x15 || (!bTryUp && !bTryDown && priv->TryDownCountLowData == 0 && priv->TryupingCount && priv->FailTxRateCount > 0x6)) { priv->FailTxRateCount --; } OfdmTxPwrIdx = priv->chtxpwr_ofdm[priv->ieee80211->current_network.channel]; CckTxPwrIdx = priv->chtxpwr[priv->ieee80211->current_network.channel]; //[TRC Dell Lab] Mac0x9e increase 2 level in 36M~18M situation, Isaiah 2008-02-18 24:00 if((priv->CurrentOperaRate < 96) &&(priv->CurrentOperaRate > 22)) { u1bCck = read_nic_byte(dev, CCK_TXAGC); u1bOfdm = read_nic_byte(dev, OFDM_TXAGC); // case 1: Never enter High power if(u1bCck == CckTxPwrIdx ) { if(u1bOfdm != (OfdmTxPwrIdx+2) ) { priv->bEnhanceTxPwr= true; u1bOfdm = ((u1bOfdm+2) > 35) ? 35: (u1bOfdm+2); write_nic_byte(dev, OFDM_TXAGC, u1bOfdm); // printk("Enhance OFDM_TXAGC : +++++ u1bOfdm= 0x%x\n", u1bOfdm); } } // case 2: enter high power else if(u1bCck < CckTxPwrIdx) { if(!priv->bEnhanceTxPwr) { priv->bEnhanceTxPwr= true; u1bOfdm = ((u1bOfdm+2) > 35) ? 35: (u1bOfdm+2); write_nic_byte(dev, OFDM_TXAGC, u1bOfdm); //RT_TRACE(COMP_RATE, DBG_TRACE, ("Enhance OFDM_TXAGC(2) : +++++ u1bOfdm= 0x%x\n", u1bOfdm)); } } } else if(priv->bEnhanceTxPwr) //54/48/11/5.5/2/1 { u1bCck = read_nic_byte(dev, CCK_TXAGC); u1bOfdm = read_nic_byte(dev, OFDM_TXAGC); // case 1: Never enter High power if(u1bCck == CckTxPwrIdx ) { priv->bEnhanceTxPwr= false; write_nic_byte(dev, OFDM_TXAGC, OfdmTxPwrIdx); //printk("Recover OFDM_TXAGC : ===== u1bOfdm= 0x%x\n", OfdmTxPwrIdx); } // case 2: enter high power else if(u1bCck < CckTxPwrIdx) { priv->bEnhanceTxPwr= false; u1bOfdm = ((u1bOfdm-2) > 0) ? (u1bOfdm-2): 0; write_nic_byte(dev, OFDM_TXAGC, u1bOfdm); //RT_TRACE(COMP_RATE, DBG_TRACE, ("Recover OFDM_TXAGC(2): ===== u1bOfdm= 0x%x\n", u1bOfdm)); } } // // We need update initial gain when we set tx rate "from OFDM to CCK" or // "from CCK to OFDM". // SetInitialGain: if(bUpdateInitialGain) { if(MgntIsCckRate(priv->CurrentOperaRate)) // CCK { if(priv->InitialGain > priv->RegBModeGainStage) { priv->InitialGainBackUp= priv->InitialGain; if(CurrSignalStrength < -85) // Low power, OFDM [0x17] = 26. { //SD3 SYs suggest that CurrSignalStrength < -65, ofdm 0x17=26. priv->InitialGain = priv->RegBModeGainStage; } else if(priv->InitialGain > priv->RegBModeGainStage + 1) { priv->InitialGain -= 2; } else { priv->InitialGain --; } printk("StaRateAdaptive87SE(): update init_gain to index %d for date rate %d\n",priv->InitialGain, priv->CurrentOperaRate); UpdateInitialGain(dev); } } else // OFDM { if(priv->InitialGain < 4) { priv->InitialGainBackUp= priv->InitialGain; priv->InitialGain ++; printk("StaRateAdaptive87SE(): update init_gain to index %d for date rate %d\n",priv->InitialGain, priv->CurrentOperaRate); UpdateInitialGain(dev); } } } //Record the related info priv->LastRetryRate = CurrRetryRate; priv->LastTxThroughput = TxThroughput; priv->ieee80211->rate = priv->CurrentOperaRate * 5; } void rtl8180_rate_adapter(struct work_struct * work) { struct delayed_work *dwork = to_delayed_work(work); struct ieee80211_device *ieee = container_of(dwork,struct ieee80211_device,rate_adapter_wq); struct net_device *dev = ieee->dev; //struct r8180_priv *priv = ieee80211_priv(dev); // DMESG("---->rtl8180_rate_adapter"); StaRateAdaptive87SE(dev); // DMESG("<----rtl8180_rate_adapter"); } void timer_rate_adaptive(unsigned long data) { struct r8180_priv* priv = ieee80211_priv((struct net_device *)data); //DMESG("---->timer_rate_adaptive()\n"); if(!priv->up) { // DMESG("<----timer_rate_adaptive():driver is not up!\n"); return; } if((priv->ieee80211->iw_mode != IW_MODE_MASTER) && (priv->ieee80211->state == IEEE80211_LINKED) && (priv->ForcedDataRate == 0) ) { // DMESG("timer_rate_adaptive():schedule rate_adapter_wq\n"); queue_work(priv->ieee80211->wq, (void *)&priv->ieee80211->rate_adapter_wq); // StaRateAdaptive87SE((struct net_device *)data); } priv->rateadapter_timer.expires = jiffies + MSECS(priv->RateAdaptivePeriod); add_timer(&priv->rateadapter_timer); //DMESG("<----timer_rate_adaptive()\n"); } //by amy 080312} void SwAntennaDiversityRxOk8185( struct net_device *dev, u8 SignalStrength ) { struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev); // printk("+SwAntennaDiversityRxOk8185: RxSs: %d\n", SignalStrength); priv->AdRxOkCnt++; if( priv->AdRxSignalStrength != -1) { priv->AdRxSignalStrength = ((priv->AdRxSignalStrength*7) + (SignalStrength*3)) / 10; } else { // Initialization case. priv->AdRxSignalStrength = SignalStrength; } //{+by amy 080312 if( priv->LastRxPktAntenna ) //Main antenna. priv->AdMainAntennaRxOkCnt++; else // Aux antenna. priv->AdAuxAntennaRxOkCnt++; //+by amy 080312 // printk("-SwAntennaDiversityRxOk8185: AdRxOkCnt: %d AdRxSignalStrength: %d\n", priv->AdRxOkCnt, priv->AdRxSignalStrength); } // // Description: // Change Antenna Switch. // bool SetAntenna8185( struct net_device *dev, u8 u1bAntennaIndex ) { struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev); bool bAntennaSwitched = false; // printk("+SetAntenna8185(): Antenna is switching to: %d \n", u1bAntennaIndex); switch(u1bAntennaIndex) { case 0: /* Mac register, main antenna */ write_nic_byte(dev, ANTSEL, 0x03); /* base band */ write_phy_cck(dev, 0x11, 0x9b); /* Config CCK RX antenna. */ write_phy_ofdm(dev, 0x0d, 0x5c); /* Config OFDM RX antenna. */ bAntennaSwitched = true; break; case 1: /* Mac register, aux antenna */ write_nic_byte(dev, ANTSEL, 0x00); /* base band */ write_phy_cck(dev, 0x11, 0xbb); /* Config CCK RX antenna. */ write_phy_ofdm(dev, 0x0d, 0x54); /* Config OFDM RX antenna. */ bAntennaSwitched = true; break; default: printk("SetAntenna8185: unknown u1bAntennaIndex(%d)\n", u1bAntennaIndex); break; } if(bAntennaSwitched) { priv->CurrAntennaIndex = u1bAntennaIndex; } // printk("-SetAntenna8185(): return (%#X)\n", bAntennaSwitched); return bAntennaSwitched; } // // Description: // Toggle Antenna switch. // bool SwitchAntenna( struct net_device *dev ) { struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev); bool bResult; if(priv->CurrAntennaIndex == 0) { bResult = SetAntenna8185(dev, 1); //by amy 080312 // printk("SwitchAntenna(): switching to antenna 1 ......\n"); // bResult = SetAntenna8185(dev, 1);//-by amy 080312 } else { bResult = SetAntenna8185(dev, 0); //by amy 080312 // printk("SwitchAntenna(): switching to antenna 0 ......\n"); // bResult = SetAntenna8185(dev, 0);//-by amy 080312 } return bResult; } // // Description: // Engine of SW Antenna Diversity mechanism. // Since 8187 has no Tx part information, // this implementation is only dependend on Rx part information. // // 2006.04.17, by rcnjko. // void SwAntennaDiversity( struct net_device *dev ) { struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev); bool bSwCheckSS=false; // printk("+SwAntennaDiversity(): CurrAntennaIndex: %d\n", priv->CurrAntennaIndex); // printk("AdTickCount is %d\n",priv->AdTickCount); //by amy 080312 if(bSwCheckSS) { priv->AdTickCount++; printk("(1) AdTickCount: %d, AdCheckPeriod: %d\n", priv->AdTickCount, priv->AdCheckPeriod); printk("(2) AdRxSignalStrength: %ld, AdRxSsThreshold: %ld\n", priv->AdRxSignalStrength, priv->AdRxSsThreshold); } // priv->AdTickCount++;//-by amy 080312 // Case 1. No Link. if(priv->ieee80211->state != IEEE80211_LINKED) { // printk("SwAntennaDiversity(): Case 1. No Link.\n"); priv->bAdSwitchedChecking = false; // I switch antenna here to prevent any one of antenna is broken before link established, 2006.04.18, by rcnjko.. SwitchAntenna(dev); } // Case 2. Linked but no packet received. else if(priv->AdRxOkCnt == 0) { // printk("SwAntennaDiversity(): Case 2. Linked but no packet received.\n"); priv->bAdSwitchedChecking = false; SwitchAntenna(dev); } // Case 3. Evaluate last antenna switch action and undo it if necessary. else if(priv->bAdSwitchedChecking == true) { // printk("SwAntennaDiversity(): Case 3. Evaluate last antenna switch action.\n"); priv->bAdSwitchedChecking = false; // Adjust Rx signal strength threshold. priv->AdRxSsThreshold = (priv->AdRxSignalStrength + priv->AdRxSsBeforeSwitched) / 2; priv->AdRxSsThreshold = (priv->AdRxSsThreshold > priv->AdMaxRxSsThreshold) ? priv->AdMaxRxSsThreshold: priv->AdRxSsThreshold; if(priv->AdRxSignalStrength < priv->AdRxSsBeforeSwitched) { // Rx signal strength is not improved after we swtiched antenna. => Swich back. // printk("SwAntennaDiversity(): Rx Signal Strength is not improved, CurrRxSs: %d, LastRxSs: %d\n", // priv->AdRxSignalStrength, priv->AdRxSsBeforeSwitched); //by amy 080312 // Increase Antenna Diversity checking period due to bad decision. priv->AdCheckPeriod *= 2; //by amy 080312 // Increase Antenna Diversity checking period. if(priv->AdCheckPeriod > priv->AdMaxCheckPeriod) priv->AdCheckPeriod = priv->AdMaxCheckPeriod; // Wrong deceision => switch back. SwitchAntenna(dev); } else { // Rx Signal Strength is improved. // printk("SwAntennaDiversity(): Rx Signal Strength is improved, CurrRxSs: %d, LastRxSs: %d\n", // priv->AdRxSignalStrength, priv->AdRxSsBeforeSwitched); // Reset Antenna Diversity checking period to its min value. priv->AdCheckPeriod = priv->AdMinCheckPeriod; } // printk("SwAntennaDiversity(): AdRxSsThreshold: %d, AdCheckPeriod: %d\n", // priv->AdRxSsThreshold, priv->AdCheckPeriod); } // Case 4. Evaluate if we shall switch antenna now. // Cause Table Speed is very fast in TRC Dell Lab, we check it every time. else// if(priv->AdTickCount >= priv->AdCheckPeriod)//-by amy 080312 { // printk("SwAntennaDiversity(): Case 4. Evaluate if we shall switch antenna now.\n"); priv->AdTickCount = 0; // // We evaluate RxOk counts for each antenna first and than // evaluate signal strength. // The following operation can overcome the disability of CCA on both two antennas // When signal strength was extremely low or high. // 2008.01.30. // // // Evaluate RxOk count from each antenna if we shall switch default antenna now. // Added by Roger, 2008.02.21. //{by amy 080312 if((priv->AdMainAntennaRxOkCnt < priv->AdAuxAntennaRxOkCnt) && (priv->CurrAntennaIndex == 0)) { // We set Main antenna as default but RxOk count was less than Aux ones. // printk("SwAntennaDiversity(): Main antenna RxOK is poor, AdMainAntennaRxOkCnt: %d, AdAuxAntennaRxOkCnt: %d\n", // priv->AdMainAntennaRxOkCnt, priv->AdAuxAntennaRxOkCnt); // Switch to Aux antenna. SwitchAntenna(dev); priv->bHWAdSwitched = true; } else if((priv->AdAuxAntennaRxOkCnt < priv->AdMainAntennaRxOkCnt) && (priv->CurrAntennaIndex == 1)) { // We set Aux antenna as default but RxOk count was less than Main ones. // printk("SwAntennaDiversity(): Aux antenna RxOK is poor, AdMainAntennaRxOkCnt: %d, AdAuxAntennaRxOkCnt: %d\n", // priv->AdMainAntennaRxOkCnt, priv->AdAuxAntennaRxOkCnt); // Switch to Main antenna. SwitchAntenna(dev); priv->bHWAdSwitched = true; } else {// Default antenna is better. // printk("SwAntennaDiversity(): Default antenna is better., AdMainAntennaRxOkCnt: %d, AdAuxAntennaRxOkCnt: %d\n", // priv->AdMainAntennaRxOkCnt, priv->AdAuxAntennaRxOkCnt); // Still need to check current signal strength. priv->bHWAdSwitched = false; } // // We evaluate Rx signal strength ONLY when default antenna // didn't changed by HW evaluation. // 2008.02.27. // // [TRC Dell Lab] SignalStrength is inaccuracy. Isaiah 2008-03-05 // For example, Throughput of aux is better than main antenna(about 10M v.s 2M), // but AdRxSignalStrength is less than main. // Our guess is that main antenna have lower throughput and get many change // to receive more CCK packets(ex.Beacon) which have stronger SignalStrength. // if( (!priv->bHWAdSwitched) && (bSwCheckSS)) { //by amy 080312} // Evaluate Rx signal strength if we shall switch antenna now. if(priv->AdRxSignalStrength < priv->AdRxSsThreshold) { // Rx signal strength is weak => Switch Antenna. // printk("SwAntennaDiversity(): Rx Signal Strength is weak, CurrRxSs: %d, RxSsThreshold: %d\n", // priv->AdRxSignalStrength, priv->AdRxSsThreshold); priv->AdRxSsBeforeSwitched = priv->AdRxSignalStrength; priv->bAdSwitchedChecking = true; SwitchAntenna(dev); } else { // Rx signal strength is OK. // printk("SwAntennaDiversity(): Rx Signal Strength is OK, CurrRxSs: %d, RxSsThreshold: %d\n", // priv->AdRxSignalStrength, priv->AdRxSsThreshold); priv->bAdSwitchedChecking = false; // Increase Rx signal strength threshold if necessary. if( (priv->AdRxSignalStrength > (priv->AdRxSsThreshold + 10)) && // Signal is much stronger than current threshold priv->AdRxSsThreshold <= priv->AdMaxRxSsThreshold) // Current threhold is not yet reach upper limit. { priv->AdRxSsThreshold = (priv->AdRxSsThreshold + priv->AdRxSignalStrength) / 2; priv->AdRxSsThreshold = (priv->AdRxSsThreshold > priv->AdMaxRxSsThreshold) ? priv->AdMaxRxSsThreshold: priv->AdRxSsThreshold;//+by amy 080312 } // Reduce Antenna Diversity checking period if possible. if( priv->AdCheckPeriod > priv->AdMinCheckPeriod ) { priv->AdCheckPeriod /= 2; } } } } //by amy 080312 // Reset antenna diversity Rx related statistics. priv->AdRxOkCnt = 0; priv->AdMainAntennaRxOkCnt = 0; priv->AdAuxAntennaRxOkCnt = 0; //by amy 080312 // priv->AdRxOkCnt = 0;//-by amy 080312 // printk("-SwAntennaDiversity()\n"); } // // Description: // Return TRUE if we shall perform Tx Power Tracking Mecahnism, FALSE otherwise. // bool CheckTxPwrTracking( struct net_device *dev) { struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev); if(!priv->bTxPowerTrack) { return false; } //lzm reserved 080826 //if(priv->bScanInProgress) //{ // return false; //} //if 87SE is in High Power , don't do Tx Power Tracking. asked by SD3 ED. 2008-08-08 Isaiah if(priv->bToUpdateTxPwr) { return false; } return true; } // // Description: // Timer callback function of SW Antenna Diversity. // void SwAntennaDiversityTimerCallback( struct net_device *dev ) { struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev); RT_RF_POWER_STATE rtState; //printk("+SwAntennaDiversityTimerCallback()\n"); // // We do NOT need to switch antenna while RF is off. // 2007.05.09, added by Roger. // rtState = priv->eRFPowerState; do{ if (rtState == eRfOff) { // printk("SwAntennaDiversityTimer - RF is OFF.\n"); break; } else if (rtState == eRfSleep) { // Don't access BB/RF under Disable PLL situation. //RT_TRACE((COMP_RF|COMP_ANTENNA), DBG_LOUD, ("SwAntennaDiversityTimerCallback(): RF is Sleep => skip it\n")); break; } SwAntennaDiversity(dev); }while(false); if(priv->up) { priv->SwAntennaDiversityTimer.expires = jiffies + MSECS(ANTENNA_DIVERSITY_TIMER_PERIOD); add_timer(&priv->SwAntennaDiversityTimer); } //printk("-SwAntennaDiversityTimerCallback()\n"); }