4 #include "r8180_93cx6.h"
9 // Return TRUE if we shall perform High Power Mecahnism, FALSE otherwise.
12 #define RATE_ADAPTIVE_TIMER_PERIOD 300
14 bool CheckHighPower(struct net_device *dev)
16 struct r8180_priv *priv = ieee80211_priv(dev);
17 struct ieee80211_device *ieee = priv->ieee80211;
19 if(!priv->bRegHighPowerMechanism)
24 if(ieee->state == IEEE80211_LINKED_SCANNING)
34 // Update Tx power level if necessary.
35 // See also DoRxHighPower() and SetTxPowerLevel8185() for reference.
38 // The reason why we udpate Tx power level here instead of DoRxHighPower()
39 // is the number of IO to change Tx power is much more than chane TR switch
40 // and they are related to OFDM and MAC registers.
41 // So, we don't want to update it so frequently in per-Rx packet base.
45 struct net_device *dev
48 struct r8180_priv *priv = ieee80211_priv(dev);
54 char OfdmTxPwrIdx, CckTxPwrIdx;
56 //printk("----> DoTxHighPower()\n");
58 HiPwrUpperTh = priv->RegHiPwrUpperTh;
59 HiPwrLowerTh = priv->RegHiPwrLowerTh;
61 HiPwrUpperTh = HiPwrUpperTh * 10;
62 HiPwrLowerTh = HiPwrLowerTh * 10;
63 RSSIHiPwrUpperTh = priv->RegRSSIHiPwrUpperTh;
64 RSSIHiPwrLowerTh = priv->RegRSSIHiPwrLowerTh;
67 OfdmTxPwrIdx = priv->chtxpwr_ofdm[priv->ieee80211->current_network.channel];
68 CckTxPwrIdx = priv->chtxpwr[priv->ieee80211->current_network.channel];
70 // printk("DoTxHighPower() - UndecoratedSmoothedSS:%d, CurCCKRSSI = %d , bCurCCKPkt= %d \n", priv->UndecoratedSmoothedSS, priv->CurCCKRSSI, priv->bCurCCKPkt );
72 if((priv->UndecoratedSmoothedSS > HiPwrUpperTh) ||
73 (priv->bCurCCKPkt && (priv->CurCCKRSSI > RSSIHiPwrUpperTh)))
75 // Stevenl suggested that degrade 8dbm in high power sate. 2007-12-04 Isaiah
77 // printk("=====>DoTxHighPower() - High Power - UndecoratedSmoothedSS:%d, HiPwrUpperTh = %d \n", priv->UndecoratedSmoothedSS, HiPwrUpperTh );
78 priv->bToUpdateTxPwr = true;
79 u1bTmp= read_nic_byte(dev, CCK_TXAGC);
81 // If it never enter High Power.
82 if( CckTxPwrIdx == u1bTmp)
84 u1bTmp = (u1bTmp > 16) ? (u1bTmp -16): 0; // 8dbm
85 write_nic_byte(dev, CCK_TXAGC, u1bTmp);
87 u1bTmp= read_nic_byte(dev, OFDM_TXAGC);
88 u1bTmp = (u1bTmp > 16) ? (u1bTmp -16): 0; // 8dbm
89 write_nic_byte(dev, OFDM_TXAGC, u1bTmp);
93 else if((priv->UndecoratedSmoothedSS < HiPwrLowerTh) &&
94 (!priv->bCurCCKPkt || priv->CurCCKRSSI < RSSIHiPwrLowerTh))
96 // printk("DoTxHighPower() - lower Power - UndecoratedSmoothedSS:%d, HiPwrUpperTh = %d \n", priv->UndecoratedSmoothedSS, HiPwrLowerTh );
97 if(priv->bToUpdateTxPwr)
99 priv->bToUpdateTxPwr = false;
101 u1bTmp= read_nic_byte(dev, CCK_TXAGC);
102 if(u1bTmp < CckTxPwrIdx)
104 //u1bTmp = ((u1bTmp+16) > 35) ? 35: (u1bTmp+16); // 8dbm
105 //write_nic_byte(dev, CCK_TXAGC, u1bTmp);
106 write_nic_byte(dev, CCK_TXAGC, CckTxPwrIdx);
109 u1bTmp= read_nic_byte(dev, OFDM_TXAGC);
110 if(u1bTmp < OfdmTxPwrIdx)
112 //u1bTmp = ((u1bTmp+16) > 35) ? 35: (u1bTmp+16); // 8dbm
113 //write_nic_byte(dev, OFDM_TXAGC, u1bTmp);
114 write_nic_byte(dev, OFDM_TXAGC, OfdmTxPwrIdx);
119 //printk("<---- DoTxHighPower()\n");
125 // Callback function of UpdateTxPowerWorkItem.
126 // Because of some event happend, e.g. CCX TPC, High Power Mechanism,
127 // We update Tx power of current channel again.
129 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20))
130 void rtl8180_tx_pw_wq (struct work_struct *work)
132 // struct r8180_priv *priv = container_of(work, struct r8180_priv, watch_dog_wq);
133 // struct ieee80211_device * ieee = (struct ieee80211_device*)
134 // container_of(work, struct ieee80211_device, watch_dog_wq);
135 struct delayed_work *dwork = container_of(work,struct delayed_work,work);
136 struct ieee80211_device *ieee = container_of(dwork,struct ieee80211_device,tx_pw_wq);
137 struct net_device *dev = ieee->dev;
139 void rtl8180_tx_pw_wq(struct net_device *dev)
141 // struct r8180_priv *priv = ieee80211_priv(dev);
144 // printk("----> UpdateTxPowerWorkItemCallback()\n");
148 // printk("<---- UpdateTxPowerWorkItemCallback()\n");
154 // Return TRUE if we shall perform DIG Mecahnism, FALSE otherwise.
158 struct net_device *dev
161 struct r8180_priv *priv = ieee80211_priv(dev);
162 struct ieee80211_device *ieee = priv->ieee80211;
164 if(!priv->bDigMechanism)
167 if(ieee->state != IEEE80211_LINKED)
170 //if(priv->CurrentOperaRate < 36) // Schedule Dig under all OFDM rates. By Bruce, 2007-06-01.
171 if((priv->ieee80211->rate/5) < 36) // Schedule Dig under all OFDM rates. By Bruce, 2007-06-01.
177 // Implementation of DIG for Zebra and Zebra2.
181 struct net_device *dev
184 struct r8180_priv *priv = ieee80211_priv(dev);
185 u16 CCKFalseAlarm, OFDMFalseAlarm;
186 u16 OfdmFA1, OfdmFA2;
187 int InitialGainStep = 7; // The number of initial gain stages.
188 int LowestGainStage = 4; // The capable lowest stage of performing dig workitem.
189 u32 AwakePeriodIn2Sec=0;
191 //printk("---------> DIG_Zebra()\n");
193 CCKFalseAlarm = (u16)(priv->FalseAlarmRegValue & 0x0000ffff);
194 OFDMFalseAlarm = (u16)((priv->FalseAlarmRegValue >> 16) & 0x0000ffff);
196 OfdmFA2 = ((u16)(priv->RegDigOfdmFaUpTh)) << 8;
198 // printk("DIG**********CCK False Alarm: %#X \n",CCKFalseAlarm);
199 // printk("DIG**********OFDM False Alarm: %#X \n",OFDMFalseAlarm);
201 // The number of initial gain steps is different, by Bruce, 2007-04-13.
202 if (priv->InitialGain == 0 ) //autoDIG
203 { // Advised from SD3 DZ
204 priv->InitialGain = 4; // In 87B, m74dBm means State 4 (m82dBm)
206 //if(pHalData->VersionID != VERSION_8187B_B)
207 { // Advised from SD3 DZ
211 #if 1 //lzm reserved 080826
212 AwakePeriodIn2Sec = (2000-priv ->DozePeriodInPast2Sec);
213 //printk("&&& DozePeriod=%d AwakePeriod=%d\n", priv->DozePeriodInPast2Sec, AwakePeriodIn2Sec);
214 priv ->DozePeriodInPast2Sec=0;
216 if(AwakePeriodIn2Sec)
218 //RT_TRACE(COMP_DIG, DBG_TRACE, ("DIG: AwakePeriodIn2Sec(%d) - FATh(0x%X , 0x%X) ->",AwakePeriodIn2Sec, OfdmFA1, OfdmFA2));
219 // adjuest DIG threshold.
220 OfdmFA1 = (u16)((OfdmFA1*AwakePeriodIn2Sec) / 2000) ;
221 OfdmFA2 = (u16)((OfdmFA2*AwakePeriodIn2Sec) / 2000) ;
222 //RT_TRACE(COMP_DIG, DBG_TRACE, ("( 0x%X , 0x%X)\n", OfdmFA1, OfdmFA2));
226 ;//RT_TRACE(COMP_DIG, DBG_WARNING, ("ERROR!! AwakePeriodIn2Sec should not be ZERO!!\n"));
231 LowestGainStage = priv->RegBModeGainStage; // Lowest gain stage.
233 if (OFDMFalseAlarm > OfdmFA1)
235 if (OFDMFalseAlarm > OfdmFA2)
237 priv->DIG_NumberFallbackVote++;
238 if (priv->DIG_NumberFallbackVote >1)
240 //serious OFDM False Alarm, need fallback
241 if (priv->InitialGain < InitialGainStep)
243 priv->InitialGainBackUp= priv->InitialGain;
245 priv->InitialGain = (priv->InitialGain + 1);
246 // printk("DIG**********OFDM False Alarm: %#X, OfdmFA1: %#X, OfdmFA2: %#X\n", OFDMFalseAlarm, OfdmFA1, OfdmFA2);
247 // printk("DIG+++++++ fallback OFDM:%d \n", priv->InitialGain);
248 UpdateInitialGain(dev);
250 priv->DIG_NumberFallbackVote = 0;
251 priv->DIG_NumberUpgradeVote=0;
256 if (priv->DIG_NumberFallbackVote)
257 priv->DIG_NumberFallbackVote--;
259 priv->DIG_NumberUpgradeVote=0;
263 if (priv->DIG_NumberFallbackVote)
264 priv->DIG_NumberFallbackVote--;
265 priv->DIG_NumberUpgradeVote++;
267 if (priv->DIG_NumberUpgradeVote>9)
269 if (priv->InitialGain > LowestGainStage) // In 87B, m78dBm means State 4 (m864dBm)
271 priv->InitialGainBackUp= priv->InitialGain;
273 priv->InitialGain = (priv->InitialGain - 1);
274 // printk("DIG**********OFDM False Alarm: %#X, OfdmFA1: %#X, OfdmFA2: %#X\n", OFDMFalseAlarm, OfdmFA1, OfdmFA2);
275 // printk("DIG--------- Upgrade OFDM:%d \n", priv->InitialGain);
276 UpdateInitialGain(dev);
278 priv->DIG_NumberFallbackVote = 0;
279 priv->DIG_NumberUpgradeVote=0;
283 // printk("DIG+++++++ OFDM:%d\n", priv->InitialGain);
284 //printk("<--------- DIG_Zebra()\n");
289 // Dispatch DIG implementation according to RF.
293 struct net_device *dev
296 struct r8180_priv *priv = ieee80211_priv(dev);
298 switch(priv->rf_chip)
300 case RF_ZEBRA2: // [AnnieWorkaround] For Zebra2, 2005-08-01.
306 printk("DynamicInitGain(): unknown RFChipID(%d) !!!\n", priv->rf_chip);
311 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20))
312 void rtl8180_hw_dig_wq (struct work_struct *work)
314 // struct r8180_priv *priv = container_of(work, struct r8180_priv, watch_dog_wq);
315 // struct ieee80211_device * ieee = (struct ieee80211_device*)
316 // container_of(work, struct ieee80211_device, watch_dog_wq);
317 struct delayed_work *dwork = container_of(work,struct delayed_work,work);
318 struct ieee80211_device *ieee = container_of(dwork,struct ieee80211_device,hw_dig_wq);
319 struct net_device *dev = ieee->dev;
321 void rtl8180_hw_dig_wq(struct net_device *dev)
325 struct r8180_priv *priv = ieee80211_priv(dev);
327 // Read CCK and OFDM False Alarm.
328 priv->FalseAlarmRegValue = read_nic_dword(dev, CCK_FALSE_ALARM);
331 // Adjust Initial Gain dynamically.
332 DynamicInitGain(dev);
337 IncludedInSupportedRates(
338 struct r8180_priv *priv,
345 unsigned short Found = 0;
346 u8 NaiveTxRate = TxRate&RateMask;
348 rate_len = priv->ieee80211->current_network.rates_len;
349 rate_ex_len = priv->ieee80211->current_network.rates_ex_len;
350 for( idx=0; idx< rate_len; idx++ )
352 if( (priv->ieee80211->current_network.rates[idx] & RateMask) == NaiveTxRate )
358 for( idx=0; idx< rate_ex_len; idx++ )
360 if( (priv->ieee80211->current_network.rates_ex[idx] & RateMask) == NaiveTxRate )
373 // Get the Tx rate one degree up form the input rate in the supported rates.
374 // Return the upgrade rate if it is successed, otherwise return the input rate.
375 // By Bruce, 2007-06-05.
379 struct net_device *dev,
383 struct r8180_priv *priv = ieee80211_priv(dev);
389 case 108: // Up to 54Mbps.
393 case 96: // Up to 54Mbps.
397 case 72: // Up to 48Mbps.
401 case 48: // Up to 36Mbps.
405 case 36: // Up to 24Mbps.
409 case 22: // Up to 18Mbps.
413 case 11: // Up to 11Mbps.
417 case 4: // Up to 5.5Mbps.
421 case 2: // Up to 2Mbps.
426 printk("GetUpgradeTxRate(): Input Tx Rate(%d) is undefined!\n", rate);
429 // Check if the rate is valid.
430 if(IncludedInSupportedRates(priv, UpRate))
432 // printk("GetUpgradeTxRate(): GetUpgrade Tx rate(%d) from %d !\n", UpRate, priv->CurrentOperaRate);
437 //printk("GetUpgradeTxRate(): Tx rate (%d) is not in supported rates\n", UpRate);
444 // Get the Tx rate one degree down form the input rate in the supported rates.
445 // Return the degrade rate if it is successed, otherwise return the input rate.
446 // By Bruce, 2007-06-05.
450 struct net_device *dev,
454 struct r8180_priv *priv = ieee80211_priv(dev);
460 case 108: // Down to 48Mbps.
464 case 96: // Down to 36Mbps.
468 case 72: // Down to 24Mbps.
472 case 48: // Down to 18Mbps.
476 case 36: // Down to 11Mbps.
480 case 22: // Down to 5.5Mbps.
484 case 11: // Down to 2Mbps.
488 case 4: // Down to 1Mbps.
492 case 2: // Down to 1Mbps.
497 printk("GetDegradeTxRate(): Input Tx Rate(%d) is undefined!\n", rate);
500 // Check if the rate is valid.
501 if(IncludedInSupportedRates(priv, DownRate))
503 // printk("GetDegradeTxRate(): GetDegrade Tx rate(%d) from %d!\n", DownRate, priv->CurrentOperaRate);
508 //printk("GetDegradeTxRate(): Tx rate (%d) is not in supported rates\n", DownRate);
514 // Helper function to determine if specified data rate is
516 // 2005.01.25, by rcnjko.
523 bool bReturn = false;
525 if((rate <= 22) && (rate != 12) && (rate != 18))
532 #ifdef CONFIG_RTL818X_S
535 // Tx Power tracking mechanism routine on 87SE.
536 // Created by Roger, 2007.12.11.
540 struct net_device *dev
543 struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
544 u8 tmpu1Byte, CurrentThermal, Idx;
545 char CckTxPwrIdx, OfdmTxPwrIdx;
548 tmpu1Byte = read_nic_byte(dev, EN_LPF_CAL);
549 CurrentThermal = (tmpu1Byte & 0xf0)>>4; //[ 7:4]: thermal meter indication.
550 CurrentThermal = (CurrentThermal>0x0c)? 0x0c:CurrentThermal;//lzm add 080826
552 //printk("TxPwrTracking87SE(): CurrentThermal(%d)\n", CurrentThermal);
554 if( CurrentThermal != priv->ThermalMeter)
556 // printk("TxPwrTracking87SE(): Thermal meter changed!!!\n");
558 // Update Tx Power level on each channel.
559 for(Idx = 1; Idx<15; Idx++)
561 CckTxPwrIdx = priv->chtxpwr[Idx];
562 OfdmTxPwrIdx = priv->chtxpwr_ofdm[Idx];
564 if( CurrentThermal > priv->ThermalMeter )
565 { // higher thermal meter.
566 CckTxPwrIdx += (CurrentThermal - priv->ThermalMeter)*2;
567 OfdmTxPwrIdx += (CurrentThermal - priv->ThermalMeter)*2;
570 CckTxPwrIdx = 35; // Force TxPower to maximal index.
575 { // lower thermal meter.
576 CckTxPwrIdx -= (priv->ThermalMeter - CurrentThermal)*2;
577 OfdmTxPwrIdx -= (priv->ThermalMeter - CurrentThermal)*2;
585 // Update TxPower level on CCK and OFDM resp.
586 priv->chtxpwr[Idx] = CckTxPwrIdx;
587 priv->chtxpwr_ofdm[Idx] = OfdmTxPwrIdx;
590 // Update TxPower level immediately.
591 rtl8225z2_SetTXPowerLevel(dev, priv->ieee80211->current_network.channel);
593 priv->ThermalMeter = CurrentThermal;
597 struct net_device *dev
600 struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
601 unsigned long CurrTxokCnt;
605 unsigned long CurrRxokCnt;
607 bool bTryDown = false;
611 long CurrSignalStrength;
612 bool bUpdateInitialGain = false;
613 u8 u1bOfdm=0, u1bCck = 0;
614 char OfdmTxPwrIdx, CckTxPwrIdx;
616 priv->RateAdaptivePeriod= RATE_ADAPTIVE_TIMER_PERIOD;
619 CurrRetryCnt = priv->CurrRetryCnt;
620 CurrTxokCnt = priv->NumTxOkTotal - priv->LastTxokCnt;
621 CurrRxokCnt = priv->ieee80211->NumRxOkTotal - priv->LastRxokCnt;
622 CurrSignalStrength = priv->Stats_RecvSignalPower;
623 TxThroughput = (u32)(priv->NumTxOkBytesTotal - priv->LastTxOKBytes);
624 priv->LastTxOKBytes = priv->NumTxOkBytesTotal;
625 priv->CurrentOperaRate = priv->ieee80211->rate/5;
626 //printk("priv->CurrentOperaRate is %d\n",priv->CurrentOperaRate);
627 //2 Compute retry ratio.
630 CurrRetryRate = (u16)(CurrRetryCnt*100/CurrTxokCnt);
633 { // It may be serious retry. To distinguish serious retry or no packets modified by Bruce
634 CurrRetryRate = (u16)(CurrRetryCnt*100/1);
639 // Added by Roger, 2007.01.02.
640 // For debug information.
642 //printk("\n(1) pHalData->LastRetryRate: %d \n",priv->LastRetryRate);
643 //printk("(2) RetryCnt = %d \n", CurrRetryCnt);
644 //printk("(3) TxokCnt = %d \n", CurrTxokCnt);
645 //printk("(4) CurrRetryRate = %d \n", CurrRetryRate);
646 //printk("(5) CurrSignalStrength = %d \n",CurrSignalStrength);
647 //printk("(6) TxThroughput is %d\n",TxThroughput);
648 //printk("priv->NumTxOkBytesTotal is %d\n",priv->NumTxOkBytesTotal);
650 priv->LastRetryCnt = priv->CurrRetryCnt;
651 priv->LastTxokCnt = priv->NumTxOkTotal;
652 priv->LastRxokCnt = priv->ieee80211->NumRxOkTotal;
653 priv->CurrRetryCnt = 0;
655 //2No Tx packets, return to init_rate or not?
656 if (CurrRetryRate==0 && CurrTxokCnt == 0)
659 //After 9 (30*300ms) seconds in this condition, we try to raise rate.
661 priv->TryupingCountNoData++;
663 // printk("No Tx packets, TryupingCountNoData(%d)\n", priv->TryupingCountNoData);
664 //[TRC Dell Lab] Extend raised period from 4.5sec to 9sec, Isaiah 2008-02-15 18:00
665 if (priv->TryupingCountNoData>30)
667 priv->TryupingCountNoData = 0;
668 priv->CurrentOperaRate = GetUpgradeTxRate(dev, priv->CurrentOperaRate);
670 priv->LastFailTxRate = 0;
671 priv->LastFailTxRateSS = -200;
672 priv->FailTxRateCount = 0;
678 priv->TryupingCountNoData=0; //Reset trying up times.
683 // For Netgear case, I comment out the following signal strength estimation,
684 // which can results in lower rate to transmit when sample is NOT enough (e.g. PING request).
685 // 2007.04.09, by Roger.
689 // Restructure rate adaptive as the following main stages:
690 // (1) Add retry threshold in 54M upgrading condition with signal strength.
691 // (2) Add the mechanism to degrade to CCK rate according to signal strength
693 // (3) Remove all Initial Gain Updates over OFDM rate. To avoid the complicated
694 // situation, Initial Gain Update is upon on DIG mechanism except CCK rate.
695 // (4) Add the mehanism of trying to upgrade tx rate.
696 // (5) Record the information of upping tx rate to avoid trying upping tx rate constantly.
697 // By Bruce, 2007-06-05.
702 // Check more times in these rate(key rates).
704 if(priv->CurrentOperaRate == 22 || priv->CurrentOperaRate == 72)
709 // Let these rates down more difficult.
711 if(MgntIsCckRate(priv->CurrentOperaRate) || priv->CurrentOperaRate == 36)
717 if (priv->bTryuping == true)
719 //2 For Test Upgrading mechanism
721 // Sometimes the throughput is upon on the capability bwtween the AP and NIC,
722 // thus the low data rate does not improve the performance.
723 // We randomly upgrade the data rate and check if the retry rate is improved.
725 // Upgrading rate did not improve the retry rate, fallback to the original rate.
726 if ( (CurrRetryRate > 25) && TxThroughput < priv->LastTxThroughput)
728 //Not necessary raising rate, fall back rate.
730 //printk("case1-1: Not necessary raising rate, fall back rate....\n");
731 //printk("case1-1: pMgntInfo->CurrentOperaRate =%d, TxThroughput = %d, LastThroughput = %d\n",
732 // priv->CurrentOperaRate, TxThroughput, priv->LastTxThroughput);
736 priv->bTryuping = false;
739 else if (CurrSignalStrength > -47 && (CurrRetryRate < 50))
743 // Added by Roger, 2007.04.09.
744 // Return to highest data rate, if signal strength is good enough.
745 // SignalStrength threshold(-50dbm) is for RTL8186.
746 // Revise SignalStrength threshold to -51dbm.
748 // Also need to check retry rate for safety, by Bruce, 2007-06-05.
749 if(priv->CurrentOperaRate != priv->ieee80211->current_network.HighestOperaRate )
752 // Upgrade Tx Rate directly.
753 priv->TryupingCount += TryUpTh;
755 // printk("case2: StaRateAdaptive87SE: Power(%d) is high enough!!. \n", CurrSignalStrength);
758 else if(CurrTxokCnt > 9 && CurrTxokCnt< 100 && CurrRetryRate >= 600)
760 //2 For Serious Retry
762 // Traffic is not busy but our Tx retry is serious.
765 // Let Rate Mechanism to degrade tx rate directly.
766 priv->TryDownCountLowData += TryDownTh;
767 // printk("case3: RA: Tx Retry is serious. Degrade Tx Rate to %d directly...\n", priv->CurrentOperaRate);
769 else if ( priv->CurrentOperaRate == 108 )
773 if ( (CurrRetryRate>26)&&(priv->LastRetryRate>25))
774 // if ( (CurrRetryRate>40)&&(priv->LastRetryRate>39))
776 //Down to rate 48Mbps.
780 else if ( (CurrRetryRate>17)&&(priv->LastRetryRate>16) && (CurrSignalStrength > -72))
781 // else if ( (CurrRetryRate>17)&&(priv->LastRetryRate>16) && (CurrSignalStrength > -72))
783 //Down to rate 48Mbps.
787 if(bTryDown && (CurrSignalStrength < -75)) //cable link
789 priv->TryDownCountLowData += TryDownTh;
791 //printk("case4---54M \n");
794 else if ( priv->CurrentOperaRate == 96 )
798 if ( ((CurrRetryRate>48) && (priv->LastRetryRate>47)))
799 // if ( ((CurrRetryRate>65) && (priv->LastRetryRate>64)))
802 //Down to rate 36Mbps.
806 else if ( ((CurrRetryRate>21) && (priv->LastRetryRate>20)) && (CurrSignalStrength > -74))
808 //Down to rate 36Mbps.
811 else if((CurrRetryRate> (priv->LastRetryRate + 50 )) && (priv->FailTxRateCount >2 ))
812 // else if((CurrRetryRate> (priv->LastRetryRate + 70 )) && (priv->FailTxRateCount >2 ))
815 priv->TryDownCountLowData += TryDownTh;
817 else if ( (CurrRetryRate<8) && (priv->LastRetryRate<8) ) //TO DO: need to consider (RSSI)
818 // else if ( (CurrRetryRate<28) && (priv->LastRetryRate<8) )
823 if(bTryDown && (CurrSignalStrength < -75))
825 priv->TryDownCountLowData += TryDownTh;
827 //printk("case5---48M \n");
829 else if ( priv->CurrentOperaRate == 72 )
832 if ( (CurrRetryRate>43) && (priv->LastRetryRate>41))
833 // if ( (CurrRetryRate>60) && (priv->LastRetryRate>59))
835 //Down to rate 24Mbps.
838 else if((CurrRetryRate> (priv->LastRetryRate + 50 )) && (priv->FailTxRateCount >2 ))
839 // else if((CurrRetryRate> (priv->LastRetryRate + 70 )) && (priv->FailTxRateCount >2 ))
842 priv->TryDownCountLowData += TryDownTh;
844 else if ( (CurrRetryRate<15) && (priv->LastRetryRate<16)) //TO DO: need to consider (RSSI)
845 // else if ( (CurrRetryRate<35) && (priv->LastRetryRate<36))
850 if(bTryDown && (CurrSignalStrength < -80))
852 priv->TryDownCountLowData += TryDownTh;
854 //printk("case6---36M \n");
856 else if ( priv->CurrentOperaRate == 48 )
860 if ( ((CurrRetryRate>63) && (priv->LastRetryRate>62)))
861 // if ( ((CurrRetryRate>83) && (priv->LastRetryRate>82)))
863 //Down to rate 18Mbps.
867 else if ( ((CurrRetryRate>33) && (priv->LastRetryRate>32)) && (CurrSignalStrength > -82) )
868 // else if ( ((CurrRetryRate>50) && (priv->LastRetryRate>49)) && (CurrSignalStrength > -82) )
870 //Down to rate 18Mbps.
873 else if((CurrRetryRate> (priv->LastRetryRate + 50 )) && (priv->FailTxRateCount >2 ))
874 // else if((CurrRetryRate> (priv->LastRetryRate + 70 )) && (priv->FailTxRateCount >2 ))
878 priv->TryDownCountLowData += TryDownTh;
880 else if ( (CurrRetryRate<20) && (priv->LastRetryRate<21)) //TO DO: need to consider (RSSI)
881 // else if ( (CurrRetryRate<40) && (priv->LastRetryRate<41))
886 if(bTryDown && (CurrSignalStrength < -82))
888 priv->TryDownCountLowData += TryDownTh;
890 //printk("case7---24M \n");
892 else if ( priv->CurrentOperaRate == 36 )
895 // original (109, 109)
896 //[TRC Dell Lab] (90, 91), Isaiah 2008-02-18 23:24
897 // (85, 86), Isaiah 2008-02-18 24:00
898 if ( ((CurrRetryRate>85) && (priv->LastRetryRate>86)))
899 // if ( ((CurrRetryRate>115) && (priv->LastRetryRate>116)))
901 //Down to rate 11Mbps.
904 //[TRC Dell Lab] Isaiah 2008-02-18 23:24
905 else if((CurrRetryRate> (priv->LastRetryRate + 50 )) && (priv->FailTxRateCount >2 ))
906 // else if((CurrRetryRate> (priv->LastRetryRate + 70 )) && (priv->FailTxRateCount >2 ))
909 priv->TryDownCountLowData += TryDownTh;
911 else if ( (CurrRetryRate<22) && (priv->LastRetryRate<23)) //TO DO: need to consider (RSSI)
912 // else if ( (CurrRetryRate<42) && (priv->LastRetryRate<43))
916 //printk("case8---18M \n");
918 else if ( priv->CurrentOperaRate == 22 )
921 if (CurrRetryRate>95)
922 // if (CurrRetryRate>155)
926 else if ( (CurrRetryRate<29) && (priv->LastRetryRate <30) )//TO DO: need to consider (RSSI)
927 // else if ( (CurrRetryRate<49) && (priv->LastRetryRate <50) )
931 //printk("case9---11M \n");
933 else if ( priv->CurrentOperaRate == 11 )
936 if (CurrRetryRate>149)
937 // if (CurrRetryRate>189)
941 else if ( (CurrRetryRate<60) && (priv->LastRetryRate < 65))
942 // else if ( (CurrRetryRate<80) && (priv->LastRetryRate < 85))
947 //printk("case10---5.5M \n");
949 else if ( priv->CurrentOperaRate == 4 )
952 if((CurrRetryRate>99) && (priv->LastRetryRate>99))
953 // if((CurrRetryRate>199) && (priv->LastRetryRate>199))
957 else if ( (CurrRetryRate < 65) && (priv->LastRetryRate < 70))
958 // else if ( (CurrRetryRate < 85) && (priv->LastRetryRate < 90))
962 //printk("case11---2M \n");
964 else if ( priv->CurrentOperaRate == 2 )
967 if( (CurrRetryRate<70) && (priv->LastRetryRate<75))
968 // if( (CurrRetryRate<90) && (priv->LastRetryRate<95))
972 //printk("case12---1M \n");
975 if(bTryUp && bTryDown)
976 printk("StaRateAdaptive87B(): Tx Rate tried upping and downing simultaneously!\n");
978 //1 Test Upgrading Tx Rate
979 // Sometimes the cause of the low throughput (high retry rate) is the compatibility between the AP and NIC.
980 // To test if the upper rate may cause lower retry rate, this mechanism randomly occurs to test upgrading tx rate.
981 if(!bTryUp && !bTryDown && (priv->TryupingCount == 0) && (priv->TryDownCountLowData == 0)
982 && priv->CurrentOperaRate != priv->ieee80211->current_network.HighestOperaRate && priv->FailTxRateCount < 2)
984 if(jiffies% (CurrRetryRate + 101) == 0)
987 priv->bTryuping = true;
988 //printk("StaRateAdaptive87SE(): Randomly try upgrading...\n");
995 priv->TryupingCount++;
996 priv->TryDownCountLowData = 0;
999 // printk("UP: pHalData->TryupingCount = %d\n", priv->TryupingCount);
1000 // printk("UP: TryUpTh(%d)+ (FailTxRateCount(%d))^2 =%d\n",
1001 // TryUpTh, priv->FailTxRateCount, (TryUpTh + priv->FailTxRateCount * priv->FailTxRateCount) );
1002 // printk("UP: pHalData->bTryuping=%d\n", priv->bTryuping);
1007 // Check more times if we need to upgrade indeed.
1008 // Because the largest value of pHalData->TryupingCount is 0xFFFF and
1009 // the largest value of pHalData->FailTxRateCount is 0x14,
1010 // this condition will be satisfied at most every 2 min.
1013 if((priv->TryupingCount > (TryUpTh + priv->FailTxRateCount * priv->FailTxRateCount)) ||
1014 (CurrSignalStrength > priv->LastFailTxRateSS) || priv->bTryuping)
1016 priv->TryupingCount = 0;
1018 // When transfering from CCK to OFDM, DIG is an important issue.
1020 if(priv->CurrentOperaRate == 22)
1021 bUpdateInitialGain = true;
1023 // The difference in throughput between 48Mbps and 36Mbps is 8M.
1024 // So, we must be carefully in this rate scale. Isaiah 2008-02-15.
1026 if( ((priv->CurrentOperaRate == 72) || (priv->CurrentOperaRate == 48) || (priv->CurrentOperaRate == 36)) &&
1027 (priv->FailTxRateCount > 2) )
1028 priv->RateAdaptivePeriod= (RATE_ADAPTIVE_TIMER_PERIOD/2);
1030 // (1)To avoid upgrade frequently to the fail tx rate, add the FailTxRateCount into the threshold.
1031 // (2)If the signal strength is increased, it may be able to upgrade.
1033 priv->CurrentOperaRate = GetUpgradeTxRate(dev, priv->CurrentOperaRate);
1034 // printk("StaRateAdaptive87SE(): Upgrade Tx Rate to %d\n", priv->CurrentOperaRate);
1036 //[TRC Dell Lab] Bypass 12/9/6, Isaiah 2008-02-18 20:00
1037 if(priv->CurrentOperaRate ==36)
1039 priv->bUpdateARFR=true;
1040 write_nic_word(dev, ARFR, 0x0F8F); //bypass 12/9/6
1041 // printk("UP: ARFR=0xF8F\n");
1043 else if(priv->bUpdateARFR)
1045 priv->bUpdateARFR=false;
1046 write_nic_word(dev, ARFR, 0x0FFF); //set 1M ~ 54Mbps.
1047 // printk("UP: ARFR=0xFFF\n");
1050 // Update Fail Tx rate and count.
1051 if(priv->LastFailTxRate != priv->CurrentOperaRate)
1053 priv->LastFailTxRate = priv->CurrentOperaRate;
1054 priv->FailTxRateCount = 0;
1055 priv->LastFailTxRateSS = -200; // Set lowest power.
1061 if(priv->TryupingCount > 0)
1062 priv->TryupingCount --;
1067 priv->TryDownCountLowData++;
1068 priv->TryupingCount = 0;
1070 // printk("DN: pHalData->TryDownCountLowData = %d\n",priv->TryDownCountLowData);
1071 // printk("DN: TryDownTh =%d\n", TryDownTh);
1072 // printk("DN: pHalData->bTryuping=%d\n", priv->bTryuping);
1075 //Check if Tx rate can be degraded or Test trying upgrading should fallback.
1076 if(priv->TryDownCountLowData > TryDownTh || priv->bTryuping)
1078 priv->TryDownCountLowData = 0;
1079 priv->bTryuping = false;
1080 // Update fail information.
1081 if(priv->LastFailTxRate == priv->CurrentOperaRate)
1083 priv->FailTxRateCount ++;
1084 // Record the Tx fail rate signal strength.
1085 if(CurrSignalStrength > priv->LastFailTxRateSS)
1087 priv->LastFailTxRateSS = CurrSignalStrength;
1092 priv->LastFailTxRate = priv->CurrentOperaRate;
1093 priv->FailTxRateCount = 1;
1094 priv->LastFailTxRateSS = CurrSignalStrength;
1096 priv->CurrentOperaRate = GetDegradeTxRate(dev, priv->CurrentOperaRate);
1098 // Reduce chariot training time at weak signal strength situation. SD3 ED demand.
1099 //[TRC Dell Lab] Revise Signal Threshold from -75 to -80 , Isaiah 2008-02-18 20:00
1100 if( (CurrSignalStrength < -80) && (priv->CurrentOperaRate > 72 ))
1102 priv->CurrentOperaRate = 72;
1103 // printk("DN: weak signal strength (%d), degrade to 36Mbps\n", CurrSignalStrength);
1106 //[TRC Dell Lab] Bypass 12/9/6, Isaiah 2008-02-18 20:00
1107 if(priv->CurrentOperaRate ==36)
1109 priv->bUpdateARFR=true;
1110 write_nic_word(dev, ARFR, 0x0F8F); //bypass 12/9/6
1111 // printk("DN: ARFR=0xF8F\n");
1113 else if(priv->bUpdateARFR)
1115 priv->bUpdateARFR=false;
1116 write_nic_word(dev, ARFR, 0x0FFF); //set 1M ~ 54Mbps.
1117 // printk("DN: ARFR=0xFFF\n");
1121 // When it is CCK rate, it may need to update initial gain to receive lower power packets.
1123 if(MgntIsCckRate(priv->CurrentOperaRate))
1125 bUpdateInitialGain = true;
1127 // printk("StaRateAdaptive87SE(): Degrade Tx Rate to %d\n", priv->CurrentOperaRate);
1132 if(priv->TryDownCountLowData > 0)
1133 priv->TryDownCountLowData --;
1136 // Keep the Tx fail rate count to equal to 0x15 at most.
1137 // Reduce the fail count at least to 10 sec if tx rate is tending stable.
1138 if(priv->FailTxRateCount >= 0x15 ||
1139 (!bTryUp && !bTryDown && priv->TryDownCountLowData == 0 && priv->TryupingCount && priv->FailTxRateCount > 0x6))
1141 priv->FailTxRateCount --;
1145 OfdmTxPwrIdx = priv->chtxpwr_ofdm[priv->ieee80211->current_network.channel];
1146 CckTxPwrIdx = priv->chtxpwr[priv->ieee80211->current_network.channel];
1148 //[TRC Dell Lab] Mac0x9e increase 2 level in 36M~18M situation, Isaiah 2008-02-18 24:00
1149 if((priv->CurrentOperaRate < 96) &&(priv->CurrentOperaRate > 22))
1151 u1bCck = read_nic_byte(dev, CCK_TXAGC);
1152 u1bOfdm = read_nic_byte(dev, OFDM_TXAGC);
1154 // case 1: Never enter High power
1155 if(u1bCck == CckTxPwrIdx )
1157 if(u1bOfdm != (OfdmTxPwrIdx+2) )
1159 priv->bEnhanceTxPwr= true;
1160 u1bOfdm = ((u1bOfdm+2) > 35) ? 35: (u1bOfdm+2);
1161 write_nic_byte(dev, OFDM_TXAGC, u1bOfdm);
1162 // printk("Enhance OFDM_TXAGC : +++++ u1bOfdm= 0x%x\n", u1bOfdm);
1165 // case 2: enter high power
1166 else if(u1bCck < CckTxPwrIdx)
1168 if(!priv->bEnhanceTxPwr)
1170 priv->bEnhanceTxPwr= true;
1171 u1bOfdm = ((u1bOfdm+2) > 35) ? 35: (u1bOfdm+2);
1172 write_nic_byte(dev, OFDM_TXAGC, u1bOfdm);
1173 //RT_TRACE(COMP_RATE, DBG_TRACE, ("Enhance OFDM_TXAGC(2) : +++++ u1bOfdm= 0x%x\n", u1bOfdm));
1177 else if(priv->bEnhanceTxPwr) //54/48/11/5.5/2/1
1179 u1bCck = read_nic_byte(dev, CCK_TXAGC);
1180 u1bOfdm = read_nic_byte(dev, OFDM_TXAGC);
1182 // case 1: Never enter High power
1183 if(u1bCck == CckTxPwrIdx )
1185 priv->bEnhanceTxPwr= false;
1186 write_nic_byte(dev, OFDM_TXAGC, OfdmTxPwrIdx);
1187 //printk("Recover OFDM_TXAGC : ===== u1bOfdm= 0x%x\n", OfdmTxPwrIdx);
1189 // case 2: enter high power
1190 else if(u1bCck < CckTxPwrIdx)
1192 priv->bEnhanceTxPwr= false;
1193 u1bOfdm = ((u1bOfdm-2) > 0) ? (u1bOfdm-2): 0;
1194 write_nic_byte(dev, OFDM_TXAGC, u1bOfdm);
1195 //RT_TRACE(COMP_RATE, DBG_TRACE, ("Recover OFDM_TXAGC(2): ===== u1bOfdm= 0x%x\n", u1bOfdm));
1201 // We need update initial gain when we set tx rate "from OFDM to CCK" or
1202 // "from CCK to OFDM".
1205 if(bUpdateInitialGain)
1207 if(MgntIsCckRate(priv->CurrentOperaRate)) // CCK
1209 if(priv->InitialGain > priv->RegBModeGainStage)
1211 priv->InitialGainBackUp= priv->InitialGain;
1213 if(CurrSignalStrength < -85) // Low power, OFDM [0x17] = 26.
1215 //SD3 SYs suggest that CurrSignalStrength < -65, ofdm 0x17=26.
1216 priv->InitialGain = priv->RegBModeGainStage;
1218 else if(priv->InitialGain > priv->RegBModeGainStage + 1)
1220 priv->InitialGain -= 2;
1224 priv->InitialGain --;
1226 printk("StaRateAdaptive87SE(): update init_gain to index %d for date rate %d\n",priv->InitialGain, priv->CurrentOperaRate);
1227 UpdateInitialGain(dev);
1232 if(priv->InitialGain < 4)
1234 priv->InitialGainBackUp= priv->InitialGain;
1236 priv->InitialGain ++;
1237 printk("StaRateAdaptive87SE(): update init_gain to index %d for date rate %d\n",priv->InitialGain, priv->CurrentOperaRate);
1238 UpdateInitialGain(dev);
1243 //Record the related info
1244 priv->LastRetryRate = CurrRetryRate;
1245 priv->LastTxThroughput = TxThroughput;
1246 priv->ieee80211->rate = priv->CurrentOperaRate * 5;
1250 #if LINUX_VERSION_CODE >=KERNEL_VERSION(2,6,20)
1251 void rtl8180_rate_adapter(struct work_struct * work)
1253 struct delayed_work *dwork = container_of(work,struct delayed_work,work);
1254 struct ieee80211_device *ieee = container_of(dwork,struct ieee80211_device,rate_adapter_wq);
1255 struct net_device *dev = ieee->dev;
1257 void rtl8180_rate_adapter(struct net_device *dev)
1261 //struct r8180_priv *priv = ieee80211_priv(dev);
1262 // DMESG("---->rtl8180_rate_adapter");
1263 StaRateAdaptive87SE(dev);
1264 // DMESG("<----rtl8180_rate_adapter");
1266 void timer_rate_adaptive(unsigned long data)
1268 struct r8180_priv* priv = ieee80211_priv((struct net_device *)data);
1269 //DMESG("---->timer_rate_adaptive()\n");
1272 // DMESG("<----timer_rate_adaptive():driver is not up!\n");
1275 if((priv->ieee80211->iw_mode != IW_MODE_MASTER)
1276 && (priv->ieee80211->state == IEEE80211_LINKED) &&
1277 (priv->ForcedDataRate == 0) )
1279 // DMESG("timer_rate_adaptive():schedule rate_adapter_wq\n");
1280 #ifdef CONFIG_RTL818X_S
1281 queue_work(priv->ieee80211->wq, (void *)&priv->ieee80211->rate_adapter_wq);
1282 // StaRateAdaptive87SE((struct net_device *)data);
1285 priv->rateadapter_timer.expires = jiffies + MSECS(priv->RateAdaptivePeriod);
1286 add_timer(&priv->rateadapter_timer);
1287 //DMESG("<----timer_rate_adaptive()\n");
1291 SwAntennaDiversityRxOk8185(
1292 struct net_device *dev,
1296 struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
1298 // printk("+SwAntennaDiversityRxOk8185: RxSs: %d\n", SignalStrength);
1302 if( priv->AdRxSignalStrength != -1)
1304 priv->AdRxSignalStrength = ((priv->AdRxSignalStrength*7) + (SignalStrength*3)) / 10;
1307 { // Initialization case.
1308 priv->AdRxSignalStrength = SignalStrength;
1311 if( priv->LastRxPktAntenna ) //Main antenna.
1312 priv->AdMainAntennaRxOkCnt++;
1313 else // Aux antenna.
1314 priv->AdAuxAntennaRxOkCnt++;
1316 // printk("-SwAntennaDiversityRxOk8185: AdRxOkCnt: %d AdRxSignalStrength: %d\n", priv->AdRxOkCnt, priv->AdRxSignalStrength);
1320 // Change Antenna Switch.
1324 struct net_device *dev,
1328 struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
1329 bool bAntennaSwitched = false;
1331 // printk("+SetAntenna8185(): Antenna is switching to: %d \n", u1bAntennaIndex);
1333 switch(u1bAntennaIndex)
1336 switch(priv->rf_chip)
1340 #ifdef CONFIG_RTL8185B
1341 #ifdef CONFIG_RTL818X_S
1342 // Mac register, main antenna
1343 write_nic_byte(dev, ANTSEL, 0x03);
1345 write_phy_cck(dev,0x11, 0x9b); // Config CCK RX antenna.
1346 write_phy_ofdm(dev, 0x0d, 0x5c); // Config OFDM RX antenna.
1349 // Mac register, main antenna
1350 write_nic_byte(dev, ANTSEL, 0x03);
1352 write_phy_cck(dev, 0x10, 0x9b); // Config CCK RX antenna.
1353 write_phy_ofdm(dev, 0x0d, 0x5c); // Config OFDM RX antenna.
1357 bAntennaSwitched = true;
1361 printk("SetAntenna8185: unkown RFChipID(%d)\n", priv->rf_chip);
1367 switch(priv->rf_chip)
1371 #ifdef CONFIG_RTL8185B
1372 #ifdef CONFIG_RTL818X_S
1373 // Mac register, aux antenna
1374 write_nic_byte(dev, ANTSEL, 0x00);
1376 write_phy_cck(dev, 0x11, 0xbb); // Config CCK RX antenna.
1377 write_phy_ofdm(dev, 0x0d, 0x54); // Config OFDM RX antenna.
1379 // Mac register, aux antenna
1380 write_nic_byte(dev, ANTSEL, 0x00);
1382 write_phy_cck(dev, 0x10, 0xbb); // Config CCK RX antenna.
1383 write_phy_ofdm(dev, 0x0d, 0x54); // Config OFDM RX antenna.
1387 bAntennaSwitched = true;
1391 printk("SetAntenna8185: unkown RFChipID(%d)\n", priv->rf_chip);
1397 printk("SetAntenna8185: unkown u1bAntennaIndex(%d)\n", u1bAntennaIndex);
1401 if(bAntennaSwitched)
1403 priv->CurrAntennaIndex = u1bAntennaIndex;
1406 // printk("-SetAntenna8185(): return (%#X)\n", bAntennaSwitched);
1408 return bAntennaSwitched;
1412 // Toggle Antenna switch.
1416 struct net_device *dev
1419 struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
1423 if(priv->CurrAntennaIndex == 0)
1425 #if 0//lzm del 080826
1427 #ifdef CONFIG_RTL818X_S
1428 if(priv->bSwAntennaDiverity)
1429 bResult = SetAntennaConfig87SE(dev, 1, true);
1433 bResult = SetAntenna8185(dev, 1);
1435 // printk("SwitchAntenna(): switching to antenna 1 ......\n");
1436 // bResult = SetAntenna8185(dev, 1);//-by amy 080312
1440 #if 0//lzm del 080826
1442 #ifdef CONFIG_RTL818X_S
1443 if(priv->bSwAntennaDiverity)
1444 bResult = SetAntennaConfig87SE(dev, 0, true);
1448 bResult = SetAntenna8185(dev, 0);
1450 // printk("SwitchAntenna(): switching to antenna 0 ......\n");
1451 // bResult = SetAntenna8185(dev, 0);//-by amy 080312
1458 // Engine of SW Antenna Diversity mechanism.
1459 // Since 8187 has no Tx part information,
1460 // this implementation is only dependend on Rx part information.
1462 // 2006.04.17, by rcnjko.
1466 struct net_device *dev
1469 struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
1470 bool bSwCheckSS=false;
1471 // printk("+SwAntennaDiversity(): CurrAntennaIndex: %d\n", priv->CurrAntennaIndex);
1472 // printk("AdTickCount is %d\n",priv->AdTickCount);
1476 priv->AdTickCount++;
1478 printk("(1) AdTickCount: %d, AdCheckPeriod: %d\n",
1479 priv->AdTickCount, priv->AdCheckPeriod);
1480 printk("(2) AdRxSignalStrength: %ld, AdRxSsThreshold: %ld\n",
1481 priv->AdRxSignalStrength, priv->AdRxSsThreshold);
1483 // priv->AdTickCount++;//-by amy 080312
1486 if(priv->ieee80211->state != IEEE80211_LINKED)
1488 // printk("SwAntennaDiversity(): Case 1. No Link.\n");
1490 priv->bAdSwitchedChecking = false;
1491 // I switch antenna here to prevent any one of antenna is broken before link established, 2006.04.18, by rcnjko..
1494 // Case 2. Linked but no packet received.
1495 else if(priv->AdRxOkCnt == 0)
1497 // printk("SwAntennaDiversity(): Case 2. Linked but no packet received.\n");
1499 priv->bAdSwitchedChecking = false;
1502 // Case 3. Evaluate last antenna switch action and undo it if necessary.
1503 else if(priv->bAdSwitchedChecking == true)
1505 // printk("SwAntennaDiversity(): Case 3. Evaluate last antenna switch action.\n");
1507 priv->bAdSwitchedChecking = false;
1509 // Adjust Rx signal strength threashold.
1510 priv->AdRxSsThreshold = (priv->AdRxSignalStrength + priv->AdRxSsBeforeSwitched) / 2;
1512 priv->AdRxSsThreshold = (priv->AdRxSsThreshold > priv->AdMaxRxSsThreshold) ?
1513 priv->AdMaxRxSsThreshold: priv->AdRxSsThreshold;
1514 if(priv->AdRxSignalStrength < priv->AdRxSsBeforeSwitched)
1515 { // Rx signal strength is not improved after we swtiched antenna. => Swich back.
1516 // printk("SwAntennaDiversity(): Rx Signal Strength is not improved, CurrRxSs: %d, LastRxSs: %d\n",
1517 // priv->AdRxSignalStrength, priv->AdRxSsBeforeSwitched);
1519 // Increase Antenna Diversity checking period due to bad decision.
1520 priv->AdCheckPeriod *= 2;
1522 // Increase Antenna Diversity checking period.
1523 if(priv->AdCheckPeriod > priv->AdMaxCheckPeriod)
1524 priv->AdCheckPeriod = priv->AdMaxCheckPeriod;
1526 // Wrong deceision => switch back.
1530 { // Rx Signal Strength is improved.
1531 // printk("SwAntennaDiversity(): Rx Signal Strength is improved, CurrRxSs: %d, LastRxSs: %d\n",
1532 // priv->AdRxSignalStrength, priv->AdRxSsBeforeSwitched);
1534 // Reset Antenna Diversity checking period to its min value.
1535 priv->AdCheckPeriod = priv->AdMinCheckPeriod;
1538 // printk("SwAntennaDiversity(): AdRxSsThreshold: %d, AdCheckPeriod: %d\n",
1539 // priv->AdRxSsThreshold, priv->AdCheckPeriod);
1541 // Case 4. Evaluate if we shall switch antenna now.
1542 // Cause Table Speed is very fast in TRC Dell Lab, we check it every time.
1543 else// if(priv->AdTickCount >= priv->AdCheckPeriod)//-by amy 080312
1545 // printk("SwAntennaDiversity(): Case 4. Evaluate if we shall switch antenna now.\n");
1547 priv->AdTickCount = 0;
1550 // <Roger_Notes> We evaluate RxOk counts for each antenna first and than
1551 // evaluate signal strength.
1552 // The following operation can overcome the disability of CCA on both two antennas
1553 // When signal strength was extremely low or high.
1558 // Evaluate RxOk count from each antenna if we shall switch default antenna now.
1559 // Added by Roger, 2008.02.21.
1561 if((priv->AdMainAntennaRxOkCnt < priv->AdAuxAntennaRxOkCnt)
1562 && (priv->CurrAntennaIndex == 0))
1563 { // We set Main antenna as default but RxOk count was less than Aux ones.
1565 // printk("SwAntennaDiversity(): Main antenna RxOK is poor, AdMainAntennaRxOkCnt: %d, AdAuxAntennaRxOkCnt: %d\n",
1566 // priv->AdMainAntennaRxOkCnt, priv->AdAuxAntennaRxOkCnt);
1568 // Switch to Aux antenna.
1570 priv->bHWAdSwitched = true;
1572 else if((priv->AdAuxAntennaRxOkCnt < priv->AdMainAntennaRxOkCnt)
1573 && (priv->CurrAntennaIndex == 1))
1574 { // We set Aux antenna as default but RxOk count was less than Main ones.
1576 // printk("SwAntennaDiversity(): Aux antenna RxOK is poor, AdMainAntennaRxOkCnt: %d, AdAuxAntennaRxOkCnt: %d\n",
1577 // priv->AdMainAntennaRxOkCnt, priv->AdAuxAntennaRxOkCnt);
1579 // Switch to Main antenna.
1581 priv->bHWAdSwitched = true;
1584 {// Default antenna is better.
1586 // printk("SwAntennaDiversity(): Default antenna is better., AdMainAntennaRxOkCnt: %d, AdAuxAntennaRxOkCnt: %d\n",
1587 // priv->AdMainAntennaRxOkCnt, priv->AdAuxAntennaRxOkCnt);
1589 // Still need to check current signal strength.
1590 priv->bHWAdSwitched = false;
1593 // <Roger_Notes> We evaluate Rx signal strength ONLY when default antenna
1594 // didn't changed by HW evaluation.
1597 // [TRC Dell Lab] SignalStrength is inaccuracy. Isaiah 2008-03-05
1598 // For example, Throughput of aux is better than main antenna(about 10M v.s 2M),
1599 // but AdRxSignalStrength is less than main.
1600 // Our guess is that main antenna have lower throughput and get many change
1601 // to receive more CCK packets(ex.Beacon) which have stronger SignalStrength.
1603 if( (!priv->bHWAdSwitched) && (bSwCheckSS))
1606 // Evaluate Rx signal strength if we shall switch antenna now.
1607 if(priv->AdRxSignalStrength < priv->AdRxSsThreshold)
1608 { // Rx signal strength is weak => Switch Antenna.
1609 // printk("SwAntennaDiversity(): Rx Signal Strength is weak, CurrRxSs: %d, RxSsThreshold: %d\n",
1610 // priv->AdRxSignalStrength, priv->AdRxSsThreshold);
1612 priv->AdRxSsBeforeSwitched = priv->AdRxSignalStrength;
1613 priv->bAdSwitchedChecking = true;
1618 { // Rx signal strength is OK.
1619 // printk("SwAntennaDiversity(): Rx Signal Strength is OK, CurrRxSs: %d, RxSsThreshold: %d\n",
1620 // priv->AdRxSignalStrength, priv->AdRxSsThreshold);
1622 priv->bAdSwitchedChecking = false;
1623 // Increase Rx signal strength threashold if necessary.
1624 if( (priv->AdRxSignalStrength > (priv->AdRxSsThreshold + 10)) && // Signal is much stronger than current threshold
1625 priv->AdRxSsThreshold <= priv->AdMaxRxSsThreshold) // Current threhold is not yet reach upper limit.
1627 priv->AdRxSsThreshold = (priv->AdRxSsThreshold + priv->AdRxSignalStrength) / 2;
1628 priv->AdRxSsThreshold = (priv->AdRxSsThreshold > priv->AdMaxRxSsThreshold) ?
1629 priv->AdMaxRxSsThreshold: priv->AdRxSsThreshold;//+by amy 080312
1632 // Reduce Antenna Diversity checking period if possible.
1633 if( priv->AdCheckPeriod > priv->AdMinCheckPeriod )
1635 priv->AdCheckPeriod /= 2;
1641 // Reset antenna diversity Rx related statistics.
1642 priv->AdRxOkCnt = 0;
1643 priv->AdMainAntennaRxOkCnt = 0;
1644 priv->AdAuxAntennaRxOkCnt = 0;
1647 // priv->AdRxOkCnt = 0;//-by amy 080312
1649 // printk("-SwAntennaDiversity()\n");
1654 // Return TRUE if we shall perform Tx Power Tracking Mecahnism, FALSE otherwise.
1657 CheckTxPwrTracking( struct net_device *dev)
1659 struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
1661 if(!priv->bTxPowerTrack)
1666 //lzm reserved 080826
1667 //if(priv->bScanInProgress)
1672 //if 87SE is in High Power , don't do Tx Power Tracking. asked by SD3 ED. 2008-08-08 Isaiah
1673 if(priv->bToUpdateTxPwr)
1684 // Timer callback function of SW Antenna Diversity.
1687 SwAntennaDiversityTimerCallback(
1688 struct net_device *dev
1691 struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
1692 RT_RF_POWER_STATE rtState;
1694 //printk("+SwAntennaDiversityTimerCallback()\n");
1697 // We do NOT need to switch antenna while RF is off.
1698 // 2007.05.09, added by Roger.
1700 rtState = priv->eRFPowerState;
1702 if (rtState == eRfOff)
1704 // printk("SwAntennaDiversityTimer - RF is OFF.\n");
1707 else if (rtState == eRfSleep)
1709 // Don't access BB/RF under Disable PLL situation.
1710 //RT_TRACE((COMP_RF|COMP_ANTENNA), DBG_LOUD, ("SwAntennaDiversityTimerCallback(): RF is Sleep => skip it\n"));
1713 SwAntennaDiversity(dev);
1719 priv->SwAntennaDiversityTimer.expires = jiffies + MSECS(ANTENNA_DIVERSITY_TIMER_PERIOD);
1720 add_timer(&priv->SwAntennaDiversityTimer);
1723 //printk("-SwAntennaDiversityTimerCallback()\n");