diff options
| author |   Greg Kroah-Hartman <gregkh@suse.de> | 2008-12-04 20:01:41 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-01-06 13:52:31 -0800 |
| commit | c8d86be38785705aca77e33933298c320a1bf2a5 (patch) | |
| tree | b188305415619e6901fb2f259861110d5762041a /drivers/staging/rtl8187se/r8180_dm.c | |
| parent | Staging: add Driver for Altera PCI Express Chaining DMA reference design (diff) | |
| download | linux-dev-c8d86be38785705aca77e33933298c320a1bf2a5.tar.xz linux-dev-c8d86be38785705aca77e33933298c320a1bf2a5.zip | |
Staging: add rtl8187se driver
This is a driver for the Realtek 8187 "SE" wireless PCI devices in some
netbook computers (MSI Wind, and others). It includes its own copy of
the ieee80211 stack, but it is compiled into the driver to prevend
duplicate symbol issues.
This version comes from Ralink with no authorship, but it is based
on an old version of the rtl8180 driver from Andrea Merello. It was
hacked up a bit to get it to build properly within the kernel tree and
to properly handle the merged wireless stack within the driver.
Cc: Andrea Merello <andreamrl@tiscali.it>
Cc: linux-wireless <linux-wireless@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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");
+}
+
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