diff options
Diffstat (limited to 'drivers/staging/rtl8187se/r8180_dm.c')
| -rw-r--r-- | drivers/staging/rtl8187se/r8180_dm.c | 1725 |
1 files changed, 1725 insertions, 0 deletions
diff --git a/drivers/staging/rtl8187se/r8180_dm.c b/drivers/staging/rtl8187se/r8180_dm.c new file mode 100644 index 000000000000..742dc11fcac9 --- /dev/null +++ b/drivers/staging/rtl8187se/r8180_dm.c @@ -0,0 +1,1725 @@ +//#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 chane 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 happend, e.g. CCX TPC, High Power Mechanism,
+// We update Tx power of current channel again.
+//
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20))
+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 = container_of(work,struct delayed_work,work);
+ struct ieee80211_device *ieee = container_of(dwork,struct ieee80211_device,tx_pw_wq);
+ struct net_device *dev = ieee->dev;
+#else
+void rtl8180_tx_pw_wq(struct net_device *dev)
+{
+ // struct r8180_priv *priv = ieee80211_priv(dev);
+#endif
+
+// 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)
+ }
+ //if(pHalData->VersionID != VERSION_8187B_B)
+ { // 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
+ )
+{
+ struct r8180_priv *priv = ieee80211_priv(dev);
+
+ switch(priv->rf_chip)
+ {
+ case RF_ZEBRA2: // [AnnieWorkaround] For Zebra2, 2005-08-01.
+ case RF_ZEBRA4:
+ DIG_Zebra( dev );
+ break;
+
+ default:
+ printk("DynamicInitGain(): unknown RFChipID(%d) !!!\n", priv->rf_chip);
+ break;
+ }
+}
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20))
+void rtl8180_hw_dig_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 = container_of(work,struct delayed_work,work);
+ struct ieee80211_device *ieee = container_of(dwork,struct ieee80211_device,hw_dig_wq);
+ struct net_device *dev = ieee->dev;
+#else
+void rtl8180_hw_dig_wq(struct net_device *dev)
+{
+
+#endif
+ 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;
+}
+#ifdef CONFIG_RTL818X_S
+//
+// 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 transfering 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;
+}
+
+#endif
+#if LINUX_VERSION_CODE >=KERNEL_VERSION(2,6,20)
+void rtl8180_rate_adapter(struct work_struct * work)
+{
+ struct delayed_work *dwork = container_of(work,struct delayed_work,work);
+ struct ieee80211_device *ieee = container_of(dwork,struct ieee80211_device,rate_adapter_wq);
+ struct net_device *dev = ieee->dev;
+#else
+void rtl8180_rate_adapter(struct net_device *dev)
+{
+
+#endif
+ //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");
+#ifdef CONFIG_RTL818X_S
+ queue_work(priv->ieee80211->wq, (void *)&priv->ieee80211->rate_adapter_wq);
+// StaRateAdaptive87SE((struct net_device *)data);
+#endif
+ }
+ 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:
+ switch(priv->rf_chip)
+ {
+ case RF_ZEBRA2:
+ case RF_ZEBRA4:
+#ifdef CONFIG_RTL8185B
+#ifdef CONFIG_RTL818X_S
+ // 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.
+
+#else
+ // Mac register, main antenna
+ write_nic_byte(dev, ANTSEL, 0x03);
+ //base band
+ write_phy_cck(dev, 0x10, 0x9b); // Config CCK RX antenna.
+ write_phy_ofdm(dev, 0x0d, 0x5c); // Config OFDM RX antenna.
+#endif
+#endif
+
+ bAntennaSwitched = true;
+ break;
+
+ default:
+ printk("SetAntenna8185: unkown RFChipID(%d)\n", priv->rf_chip);
+ break;
+ }
+ break;
+
+ case 1:
+ switch(priv->rf_chip)
+ {
+ case RF_ZEBRA2:
+ case RF_ZEBRA4:
+#ifdef CONFIG_RTL8185B
+#ifdef CONFIG_RTL818X_S
+ // 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.
+#else
+ // Mac register, aux antenna
+ write_nic_byte(dev, ANTSEL, 0x00);
+ //base band
+ write_phy_cck(dev, 0x10, 0xbb); // Config CCK RX antenna.
+ write_phy_ofdm(dev, 0x0d, 0x54); // Config OFDM RX antenna.
+#endif
+#endif
+
+ bAntennaSwitched = true;
+ break;
+
+ default:
+ printk("SetAntenna8185: unkown RFChipID(%d)\n", priv->rf_chip);
+ break;
+ }
+ break;
+
+ default:
+ printk("SetAntenna8185: unkown 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)
+ {
+#if 0//lzm del 080826
+//by amy 080312
+#ifdef CONFIG_RTL818X_S
+ if(priv->bSwAntennaDiverity)
+ bResult = SetAntennaConfig87SE(dev, 1, true);
+ else
+#endif
+#endif
+ bResult = SetAntenna8185(dev, 1);
+//by amy 080312
+// printk("SwitchAntenna(): switching to antenna 1 ......\n");
+// bResult = SetAntenna8185(dev, 1);//-by amy 080312
+ }
+ else
+ {
+#if 0//lzm del 080826
+//by amy 080312
+#ifdef CONFIG_RTL818X_S
+ if(priv->bSwAntennaDiverity)
+ bResult = SetAntennaConfig87SE(dev, 0, true);
+ else
+#endif
+#endif
+ 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 threashold.
+ 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;
+
+ //
+ // <Roger_Notes> 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;
+ }
+ //
+ // <Roger_Notes> 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 threashold 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");
+}
+
|