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 channel 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 happened, e.g. CCX TPC, High Power Mechanism,
127
// We update Tx power of current channel again.
129
void rtl8180_tx_pw_wq (struct work_struct *work)
131
// struct r8180_priv *priv = container_of(work, struct r8180_priv, watch_dog_wq);
132
// struct ieee80211_device * ieee = (struct ieee80211_device*)
133
// container_of(work, struct ieee80211_device, watch_dog_wq);
134
struct delayed_work *dwork = to_delayed_work(work);
135
struct ieee80211_device *ieee = container_of(dwork,struct ieee80211_device,tx_pw_wq);
136
struct net_device *dev = ieee->dev;
138
// printk("----> UpdateTxPowerWorkItemCallback()\n");
142
// printk("<---- UpdateTxPowerWorkItemCallback()\n");
148
// Return TRUE if we shall perform DIG Mecahnism, FALSE otherwise.
152
struct net_device *dev
155
struct r8180_priv *priv = ieee80211_priv(dev);
156
struct ieee80211_device *ieee = priv->ieee80211;
158
if(!priv->bDigMechanism)
161
if(ieee->state != IEEE80211_LINKED)
164
//if(priv->CurrentOperaRate < 36) // Schedule Dig under all OFDM rates. By Bruce, 2007-06-01.
165
if((priv->ieee80211->rate/5) < 36) // Schedule Dig under all OFDM rates. By Bruce, 2007-06-01.
171
// Implementation of DIG for Zebra and Zebra2.
175
struct net_device *dev
178
struct r8180_priv *priv = ieee80211_priv(dev);
179
u16 CCKFalseAlarm, OFDMFalseAlarm;
180
u16 OfdmFA1, OfdmFA2;
181
int InitialGainStep = 7; // The number of initial gain stages.
182
int LowestGainStage = 4; // The capable lowest stage of performing dig workitem.
183
u32 AwakePeriodIn2Sec=0;
185
//printk("---------> DIG_Zebra()\n");
187
CCKFalseAlarm = (u16)(priv->FalseAlarmRegValue & 0x0000ffff);
188
OFDMFalseAlarm = (u16)((priv->FalseAlarmRegValue >> 16) & 0x0000ffff);
190
OfdmFA2 = ((u16)(priv->RegDigOfdmFaUpTh)) << 8;
192
// printk("DIG**********CCK False Alarm: %#X \n",CCKFalseAlarm);
193
// printk("DIG**********OFDM False Alarm: %#X \n",OFDMFalseAlarm);
195
// The number of initial gain steps is different, by Bruce, 2007-04-13.
196
if (priv->InitialGain == 0 ) //autoDIG
197
{ // Advised from SD3 DZ
198
priv->InitialGain = 4; // In 87B, m74dBm means State 4 (m82dBm)
200
{ // Advised from SD3 DZ
204
#if 1 //lzm reserved 080826
205
AwakePeriodIn2Sec = (2000-priv ->DozePeriodInPast2Sec);
206
//printk("&&& DozePeriod=%d AwakePeriod=%d\n", priv->DozePeriodInPast2Sec, AwakePeriodIn2Sec);
207
priv ->DozePeriodInPast2Sec=0;
209
if(AwakePeriodIn2Sec)
211
//RT_TRACE(COMP_DIG, DBG_TRACE, ("DIG: AwakePeriodIn2Sec(%d) - FATh(0x%X , 0x%X) ->",AwakePeriodIn2Sec, OfdmFA1, OfdmFA2));
212
// adjuest DIG threshold.
213
OfdmFA1 = (u16)((OfdmFA1*AwakePeriodIn2Sec) / 2000) ;
214
OfdmFA2 = (u16)((OfdmFA2*AwakePeriodIn2Sec) / 2000) ;
215
//RT_TRACE(COMP_DIG, DBG_TRACE, ("( 0x%X , 0x%X)\n", OfdmFA1, OfdmFA2));
219
;//RT_TRACE(COMP_DIG, DBG_WARNING, ("ERROR!! AwakePeriodIn2Sec should not be ZERO!!\n"));
224
LowestGainStage = priv->RegBModeGainStage; // Lowest gain stage.
226
if (OFDMFalseAlarm > OfdmFA1)
228
if (OFDMFalseAlarm > OfdmFA2)
230
priv->DIG_NumberFallbackVote++;
231
if (priv->DIG_NumberFallbackVote >1)
233
//serious OFDM False Alarm, need fallback
234
if (priv->InitialGain < InitialGainStep)
236
priv->InitialGainBackUp= priv->InitialGain;
238
priv->InitialGain = (priv->InitialGain + 1);
239
// printk("DIG**********OFDM False Alarm: %#X, OfdmFA1: %#X, OfdmFA2: %#X\n", OFDMFalseAlarm, OfdmFA1, OfdmFA2);
240
// printk("DIG+++++++ fallback OFDM:%d \n", priv->InitialGain);
241
UpdateInitialGain(dev);
243
priv->DIG_NumberFallbackVote = 0;
244
priv->DIG_NumberUpgradeVote=0;
249
if (priv->DIG_NumberFallbackVote)
250
priv->DIG_NumberFallbackVote--;
252
priv->DIG_NumberUpgradeVote=0;
256
if (priv->DIG_NumberFallbackVote)
257
priv->DIG_NumberFallbackVote--;
258
priv->DIG_NumberUpgradeVote++;
260
if (priv->DIG_NumberUpgradeVote>9)
262
if (priv->InitialGain > LowestGainStage) // In 87B, m78dBm means State 4 (m864dBm)
264
priv->InitialGainBackUp= priv->InitialGain;
266
priv->InitialGain = (priv->InitialGain - 1);
267
// printk("DIG**********OFDM False Alarm: %#X, OfdmFA1: %#X, OfdmFA2: %#X\n", OFDMFalseAlarm, OfdmFA1, OfdmFA2);
268
// printk("DIG--------- Upgrade OFDM:%d \n", priv->InitialGain);
269
UpdateInitialGain(dev);
271
priv->DIG_NumberFallbackVote = 0;
272
priv->DIG_NumberUpgradeVote=0;
276
// printk("DIG+++++++ OFDM:%d\n", priv->InitialGain);
277
//printk("<--------- DIG_Zebra()\n");
282
// Dispatch DIG implementation according to RF.
285
DynamicInitGain(struct net_device *dev)
290
void rtl8180_hw_dig_wq (struct work_struct *work)
292
struct delayed_work *dwork = to_delayed_work(work);
293
struct ieee80211_device *ieee = container_of(dwork,struct ieee80211_device,hw_dig_wq);
294
struct net_device *dev = ieee->dev;
295
struct r8180_priv *priv = ieee80211_priv(dev);
297
// Read CCK and OFDM False Alarm.
298
priv->FalseAlarmRegValue = read_nic_dword(dev, CCK_FALSE_ALARM);
301
// Adjust Initial Gain dynamically.
302
DynamicInitGain(dev);
307
IncludedInSupportedRates(
308
struct r8180_priv *priv,
315
unsigned short Found = 0;
316
u8 NaiveTxRate = TxRate&RateMask;
318
rate_len = priv->ieee80211->current_network.rates_len;
319
rate_ex_len = priv->ieee80211->current_network.rates_ex_len;
320
for( idx=0; idx< rate_len; idx++ )
322
if( (priv->ieee80211->current_network.rates[idx] & RateMask) == NaiveTxRate )
328
for( idx=0; idx< rate_ex_len; idx++ )
330
if( (priv->ieee80211->current_network.rates_ex[idx] & RateMask) == NaiveTxRate )
343
// Get the Tx rate one degree up form the input rate in the supported rates.
344
// Return the upgrade rate if it is successed, otherwise return the input rate.
345
// By Bruce, 2007-06-05.
349
struct net_device *dev,
353
struct r8180_priv *priv = ieee80211_priv(dev);
359
case 108: // Up to 54Mbps.
363
case 96: // Up to 54Mbps.
367
case 72: // Up to 48Mbps.
371
case 48: // Up to 36Mbps.
375
case 36: // Up to 24Mbps.
379
case 22: // Up to 18Mbps.
383
case 11: // Up to 11Mbps.
387
case 4: // Up to 5.5Mbps.
391
case 2: // Up to 2Mbps.
396
printk("GetUpgradeTxRate(): Input Tx Rate(%d) is undefined!\n", rate);
399
// Check if the rate is valid.
400
if(IncludedInSupportedRates(priv, UpRate))
402
// printk("GetUpgradeTxRate(): GetUpgrade Tx rate(%d) from %d !\n", UpRate, priv->CurrentOperaRate);
407
//printk("GetUpgradeTxRate(): Tx rate (%d) is not in supported rates\n", UpRate);
414
// Get the Tx rate one degree down form the input rate in the supported rates.
415
// Return the degrade rate if it is successed, otherwise return the input rate.
416
// By Bruce, 2007-06-05.
420
struct net_device *dev,
424
struct r8180_priv *priv = ieee80211_priv(dev);
430
case 108: // Down to 48Mbps.
434
case 96: // Down to 36Mbps.
438
case 72: // Down to 24Mbps.
442
case 48: // Down to 18Mbps.
446
case 36: // Down to 11Mbps.
450
case 22: // Down to 5.5Mbps.
454
case 11: // Down to 2Mbps.
458
case 4: // Down to 1Mbps.
462
case 2: // Down to 1Mbps.
467
printk("GetDegradeTxRate(): Input Tx Rate(%d) is undefined!\n", rate);
470
// Check if the rate is valid.
471
if(IncludedInSupportedRates(priv, DownRate))
473
// printk("GetDegradeTxRate(): GetDegrade Tx rate(%d) from %d!\n", DownRate, priv->CurrentOperaRate);
478
//printk("GetDegradeTxRate(): Tx rate (%d) is not in supported rates\n", DownRate);
484
// Helper function to determine if specified data rate is
486
// 2005.01.25, by rcnjko.
493
bool bReturn = false;
495
if((rate <= 22) && (rate != 12) && (rate != 18))
504
// Tx Power tracking mechanism routine on 87SE.
505
// Created by Roger, 2007.12.11.
509
struct net_device *dev
512
struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
513
u8 tmpu1Byte, CurrentThermal, Idx;
514
char CckTxPwrIdx, OfdmTxPwrIdx;
517
tmpu1Byte = read_nic_byte(dev, EN_LPF_CAL);
518
CurrentThermal = (tmpu1Byte & 0xf0)>>4; //[ 7:4]: thermal meter indication.
519
CurrentThermal = (CurrentThermal>0x0c)? 0x0c:CurrentThermal;//lzm add 080826
521
//printk("TxPwrTracking87SE(): CurrentThermal(%d)\n", CurrentThermal);
523
if( CurrentThermal != priv->ThermalMeter)
525
// printk("TxPwrTracking87SE(): Thermal meter changed!!!\n");
527
// Update Tx Power level on each channel.
528
for(Idx = 1; Idx<15; Idx++)
530
CckTxPwrIdx = priv->chtxpwr[Idx];
531
OfdmTxPwrIdx = priv->chtxpwr_ofdm[Idx];
533
if( CurrentThermal > priv->ThermalMeter )
534
{ // higher thermal meter.
535
CckTxPwrIdx += (CurrentThermal - priv->ThermalMeter)*2;
536
OfdmTxPwrIdx += (CurrentThermal - priv->ThermalMeter)*2;
539
CckTxPwrIdx = 35; // Force TxPower to maximal index.
544
{ // lower thermal meter.
545
CckTxPwrIdx -= (priv->ThermalMeter - CurrentThermal)*2;
546
OfdmTxPwrIdx -= (priv->ThermalMeter - CurrentThermal)*2;
554
// Update TxPower level on CCK and OFDM resp.
555
priv->chtxpwr[Idx] = CckTxPwrIdx;
556
priv->chtxpwr_ofdm[Idx] = OfdmTxPwrIdx;
559
// Update TxPower level immediately.
560
rtl8225z2_SetTXPowerLevel(dev, priv->ieee80211->current_network.channel);
562
priv->ThermalMeter = CurrentThermal;
566
struct net_device *dev
569
struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
570
unsigned long CurrTxokCnt;
574
unsigned long CurrRxokCnt;
576
bool bTryDown = false;
580
long CurrSignalStrength;
581
bool bUpdateInitialGain = false;
582
u8 u1bOfdm=0, u1bCck = 0;
583
char OfdmTxPwrIdx, CckTxPwrIdx;
585
priv->RateAdaptivePeriod= RATE_ADAPTIVE_TIMER_PERIOD;
588
CurrRetryCnt = priv->CurrRetryCnt;
589
CurrTxokCnt = priv->NumTxOkTotal - priv->LastTxokCnt;
590
CurrRxokCnt = priv->ieee80211->NumRxOkTotal - priv->LastRxokCnt;
591
CurrSignalStrength = priv->Stats_RecvSignalPower;
592
TxThroughput = (u32)(priv->NumTxOkBytesTotal - priv->LastTxOKBytes);
593
priv->LastTxOKBytes = priv->NumTxOkBytesTotal;
594
priv->CurrentOperaRate = priv->ieee80211->rate/5;
595
//printk("priv->CurrentOperaRate is %d\n",priv->CurrentOperaRate);
596
//2 Compute retry ratio.
599
CurrRetryRate = (u16)(CurrRetryCnt*100/CurrTxokCnt);
602
{ // It may be serious retry. To distinguish serious retry or no packets modified by Bruce
603
CurrRetryRate = (u16)(CurrRetryCnt*100/1);
608
// Added by Roger, 2007.01.02.
609
// For debug information.
611
//printk("\n(1) pHalData->LastRetryRate: %d \n",priv->LastRetryRate);
612
//printk("(2) RetryCnt = %d \n", CurrRetryCnt);
613
//printk("(3) TxokCnt = %d \n", CurrTxokCnt);
614
//printk("(4) CurrRetryRate = %d \n", CurrRetryRate);
615
//printk("(5) CurrSignalStrength = %d \n",CurrSignalStrength);
616
//printk("(6) TxThroughput is %d\n",TxThroughput);
617
//printk("priv->NumTxOkBytesTotal is %d\n",priv->NumTxOkBytesTotal);
619
priv->LastRetryCnt = priv->CurrRetryCnt;
620
priv->LastTxokCnt = priv->NumTxOkTotal;
621
priv->LastRxokCnt = priv->ieee80211->NumRxOkTotal;
622
priv->CurrRetryCnt = 0;
624
//2No Tx packets, return to init_rate or not?
625
if (CurrRetryRate==0 && CurrTxokCnt == 0)
628
//After 9 (30*300ms) seconds in this condition, we try to raise rate.
630
priv->TryupingCountNoData++;
632
// printk("No Tx packets, TryupingCountNoData(%d)\n", priv->TryupingCountNoData);
633
//[TRC Dell Lab] Extend raised period from 4.5sec to 9sec, Isaiah 2008-02-15 18:00
634
if (priv->TryupingCountNoData>30)
636
priv->TryupingCountNoData = 0;
637
priv->CurrentOperaRate = GetUpgradeTxRate(dev, priv->CurrentOperaRate);
639
priv->LastFailTxRate = 0;
640
priv->LastFailTxRateSS = -200;
641
priv->FailTxRateCount = 0;
647
priv->TryupingCountNoData=0; //Reset trying up times.
652
// For Netgear case, I comment out the following signal strength estimation,
653
// which can results in lower rate to transmit when sample is NOT enough (e.g. PING request).
654
// 2007.04.09, by Roger.
658
// Restructure rate adaptive as the following main stages:
659
// (1) Add retry threshold in 54M upgrading condition with signal strength.
660
// (2) Add the mechanism to degrade to CCK rate according to signal strength
662
// (3) Remove all Initial Gain Updates over OFDM rate. To avoid the complicated
663
// situation, Initial Gain Update is upon on DIG mechanism except CCK rate.
664
// (4) Add the mehanism of trying to upgrade tx rate.
665
// (5) Record the information of upping tx rate to avoid trying upping tx rate constantly.
666
// By Bruce, 2007-06-05.
671
// Check more times in these rate(key rates).
673
if(priv->CurrentOperaRate == 22 || priv->CurrentOperaRate == 72)
678
// Let these rates down more difficult.
680
if(MgntIsCckRate(priv->CurrentOperaRate) || priv->CurrentOperaRate == 36)
686
if (priv->bTryuping == true)
688
//2 For Test Upgrading mechanism
690
// Sometimes the throughput is upon on the capability bwtween the AP and NIC,
691
// thus the low data rate does not improve the performance.
692
// We randomly upgrade the data rate and check if the retry rate is improved.
694
// Upgrading rate did not improve the retry rate, fallback to the original rate.
695
if ( (CurrRetryRate > 25) && TxThroughput < priv->LastTxThroughput)
697
//Not necessary raising rate, fall back rate.
699
//printk("case1-1: Not necessary raising rate, fall back rate....\n");
700
//printk("case1-1: pMgntInfo->CurrentOperaRate =%d, TxThroughput = %d, LastThroughput = %d\n",
701
// priv->CurrentOperaRate, TxThroughput, priv->LastTxThroughput);
705
priv->bTryuping = false;
708
else if (CurrSignalStrength > -47 && (CurrRetryRate < 50))
712
// Added by Roger, 2007.04.09.
713
// Return to highest data rate, if signal strength is good enough.
714
// SignalStrength threshold(-50dbm) is for RTL8186.
715
// Revise SignalStrength threshold to -51dbm.
717
// Also need to check retry rate for safety, by Bruce, 2007-06-05.
718
if(priv->CurrentOperaRate != priv->ieee80211->current_network.HighestOperaRate )
721
// Upgrade Tx Rate directly.
722
priv->TryupingCount += TryUpTh;
724
// printk("case2: StaRateAdaptive87SE: Power(%d) is high enough!!. \n", CurrSignalStrength);
727
else if(CurrTxokCnt > 9 && CurrTxokCnt< 100 && CurrRetryRate >= 600)
729
//2 For Serious Retry
731
// Traffic is not busy but our Tx retry is serious.
734
// Let Rate Mechanism to degrade tx rate directly.
735
priv->TryDownCountLowData += TryDownTh;
736
// printk("case3: RA: Tx Retry is serious. Degrade Tx Rate to %d directly...\n", priv->CurrentOperaRate);
738
else if ( priv->CurrentOperaRate == 108 )
742
if ( (CurrRetryRate>26)&&(priv->LastRetryRate>25))
743
// if ( (CurrRetryRate>40)&&(priv->LastRetryRate>39))
745
//Down to rate 48Mbps.
749
else if ( (CurrRetryRate>17)&&(priv->LastRetryRate>16) && (CurrSignalStrength > -72))
750
// else if ( (CurrRetryRate>17)&&(priv->LastRetryRate>16) && (CurrSignalStrength > -72))
752
//Down to rate 48Mbps.
756
if(bTryDown && (CurrSignalStrength < -75)) //cable link
758
priv->TryDownCountLowData += TryDownTh;
760
//printk("case4---54M \n");
763
else if ( priv->CurrentOperaRate == 96 )
767
if ( ((CurrRetryRate>48) && (priv->LastRetryRate>47)))
768
// if ( ((CurrRetryRate>65) && (priv->LastRetryRate>64)))
771
//Down to rate 36Mbps.
775
else if ( ((CurrRetryRate>21) && (priv->LastRetryRate>20)) && (CurrSignalStrength > -74))
777
//Down to rate 36Mbps.
780
else if((CurrRetryRate> (priv->LastRetryRate + 50 )) && (priv->FailTxRateCount >2 ))
781
// else if((CurrRetryRate> (priv->LastRetryRate + 70 )) && (priv->FailTxRateCount >2 ))
784
priv->TryDownCountLowData += TryDownTh;
786
else if ( (CurrRetryRate<8) && (priv->LastRetryRate<8) ) //TO DO: need to consider (RSSI)
787
// else if ( (CurrRetryRate<28) && (priv->LastRetryRate<8) )
792
if(bTryDown && (CurrSignalStrength < -75))
794
priv->TryDownCountLowData += TryDownTh;
796
//printk("case5---48M \n");
798
else if ( priv->CurrentOperaRate == 72 )
801
if ( (CurrRetryRate>43) && (priv->LastRetryRate>41))
802
// if ( (CurrRetryRate>60) && (priv->LastRetryRate>59))
804
//Down to rate 24Mbps.
807
else if((CurrRetryRate> (priv->LastRetryRate + 50 )) && (priv->FailTxRateCount >2 ))
808
// else if((CurrRetryRate> (priv->LastRetryRate + 70 )) && (priv->FailTxRateCount >2 ))
811
priv->TryDownCountLowData += TryDownTh;
813
else if ( (CurrRetryRate<15) && (priv->LastRetryRate<16)) //TO DO: need to consider (RSSI)
814
// else if ( (CurrRetryRate<35) && (priv->LastRetryRate<36))
819
if(bTryDown && (CurrSignalStrength < -80))
821
priv->TryDownCountLowData += TryDownTh;
823
//printk("case6---36M \n");
825
else if ( priv->CurrentOperaRate == 48 )
829
if ( ((CurrRetryRate>63) && (priv->LastRetryRate>62)))
830
// if ( ((CurrRetryRate>83) && (priv->LastRetryRate>82)))
832
//Down to rate 18Mbps.
836
else if ( ((CurrRetryRate>33) && (priv->LastRetryRate>32)) && (CurrSignalStrength > -82) )
837
// else if ( ((CurrRetryRate>50) && (priv->LastRetryRate>49)) && (CurrSignalStrength > -82) )
839
//Down to rate 18Mbps.
842
else if((CurrRetryRate> (priv->LastRetryRate + 50 )) && (priv->FailTxRateCount >2 ))
843
// else if((CurrRetryRate> (priv->LastRetryRate + 70 )) && (priv->FailTxRateCount >2 ))
847
priv->TryDownCountLowData += TryDownTh;
849
else if ( (CurrRetryRate<20) && (priv->LastRetryRate<21)) //TO DO: need to consider (RSSI)
850
// else if ( (CurrRetryRate<40) && (priv->LastRetryRate<41))
855
if(bTryDown && (CurrSignalStrength < -82))
857
priv->TryDownCountLowData += TryDownTh;
859
//printk("case7---24M \n");
861
else if ( priv->CurrentOperaRate == 36 )
864
// original (109, 109)
865
//[TRC Dell Lab] (90, 91), Isaiah 2008-02-18 23:24
866
// (85, 86), Isaiah 2008-02-18 24:00
867
if ( ((CurrRetryRate>85) && (priv->LastRetryRate>86)))
868
// if ( ((CurrRetryRate>115) && (priv->LastRetryRate>116)))
870
//Down to rate 11Mbps.
873
//[TRC Dell Lab] Isaiah 2008-02-18 23:24
874
else if((CurrRetryRate> (priv->LastRetryRate + 50 )) && (priv->FailTxRateCount >2 ))
875
// else if((CurrRetryRate> (priv->LastRetryRate + 70 )) && (priv->FailTxRateCount >2 ))
878
priv->TryDownCountLowData += TryDownTh;
880
else if ( (CurrRetryRate<22) && (priv->LastRetryRate<23)) //TO DO: need to consider (RSSI)
881
// else if ( (CurrRetryRate<42) && (priv->LastRetryRate<43))
885
//printk("case8---18M \n");
887
else if ( priv->CurrentOperaRate == 22 )
890
if (CurrRetryRate>95)
891
// if (CurrRetryRate>155)
895
else if ( (CurrRetryRate<29) && (priv->LastRetryRate <30) )//TO DO: need to consider (RSSI)
896
// else if ( (CurrRetryRate<49) && (priv->LastRetryRate <50) )
900
//printk("case9---11M \n");
902
else if ( priv->CurrentOperaRate == 11 )
905
if (CurrRetryRate>149)
906
// if (CurrRetryRate>189)
910
else if ( (CurrRetryRate<60) && (priv->LastRetryRate < 65))
911
// else if ( (CurrRetryRate<80) && (priv->LastRetryRate < 85))
916
//printk("case10---5.5M \n");
918
else if ( priv->CurrentOperaRate == 4 )
921
if((CurrRetryRate>99) && (priv->LastRetryRate>99))
922
// if((CurrRetryRate>199) && (priv->LastRetryRate>199))
926
else if ( (CurrRetryRate < 65) && (priv->LastRetryRate < 70))
927
// else if ( (CurrRetryRate < 85) && (priv->LastRetryRate < 90))
931
//printk("case11---2M \n");
933
else if ( priv->CurrentOperaRate == 2 )
936
if( (CurrRetryRate<70) && (priv->LastRetryRate<75))
937
// if( (CurrRetryRate<90) && (priv->LastRetryRate<95))
941
//printk("case12---1M \n");
944
if(bTryUp && bTryDown)
945
printk("StaRateAdaptive87B(): Tx Rate tried upping and downing simultaneously!\n");
947
//1 Test Upgrading Tx Rate
948
// Sometimes the cause of the low throughput (high retry rate) is the compatibility between the AP and NIC.
949
// To test if the upper rate may cause lower retry rate, this mechanism randomly occurs to test upgrading tx rate.
950
if(!bTryUp && !bTryDown && (priv->TryupingCount == 0) && (priv->TryDownCountLowData == 0)
951
&& priv->CurrentOperaRate != priv->ieee80211->current_network.HighestOperaRate && priv->FailTxRateCount < 2)
953
if(jiffies% (CurrRetryRate + 101) == 0)
956
priv->bTryuping = true;
957
//printk("StaRateAdaptive87SE(): Randomly try upgrading...\n");
964
priv->TryupingCount++;
965
priv->TryDownCountLowData = 0;
968
// printk("UP: pHalData->TryupingCount = %d\n", priv->TryupingCount);
969
// printk("UP: TryUpTh(%d)+ (FailTxRateCount(%d))^2 =%d\n",
970
// TryUpTh, priv->FailTxRateCount, (TryUpTh + priv->FailTxRateCount * priv->FailTxRateCount) );
971
// printk("UP: pHalData->bTryuping=%d\n", priv->bTryuping);
976
// Check more times if we need to upgrade indeed.
977
// Because the largest value of pHalData->TryupingCount is 0xFFFF and
978
// the largest value of pHalData->FailTxRateCount is 0x14,
979
// this condition will be satisfied at most every 2 min.
982
if((priv->TryupingCount > (TryUpTh + priv->FailTxRateCount * priv->FailTxRateCount)) ||
983
(CurrSignalStrength > priv->LastFailTxRateSS) || priv->bTryuping)
985
priv->TryupingCount = 0;
987
// When transferring from CCK to OFDM, DIG is an important issue.
989
if(priv->CurrentOperaRate == 22)
990
bUpdateInitialGain = true;
992
// The difference in throughput between 48Mbps and 36Mbps is 8M.
993
// So, we must be carefully in this rate scale. Isaiah 2008-02-15.
995
if( ((priv->CurrentOperaRate == 72) || (priv->CurrentOperaRate == 48) || (priv->CurrentOperaRate == 36)) &&
996
(priv->FailTxRateCount > 2) )
997
priv->RateAdaptivePeriod= (RATE_ADAPTIVE_TIMER_PERIOD/2);
999
// (1)To avoid upgrade frequently to the fail tx rate, add the FailTxRateCount into the threshold.
1000
// (2)If the signal strength is increased, it may be able to upgrade.
1002
priv->CurrentOperaRate = GetUpgradeTxRate(dev, priv->CurrentOperaRate);
1003
// printk("StaRateAdaptive87SE(): Upgrade Tx Rate to %d\n", priv->CurrentOperaRate);
1005
//[TRC Dell Lab] Bypass 12/9/6, Isaiah 2008-02-18 20:00
1006
if(priv->CurrentOperaRate ==36)
1008
priv->bUpdateARFR=true;
1009
write_nic_word(dev, ARFR, 0x0F8F); //bypass 12/9/6
1010
// printk("UP: ARFR=0xF8F\n");
1012
else if(priv->bUpdateARFR)
1014
priv->bUpdateARFR=false;
1015
write_nic_word(dev, ARFR, 0x0FFF); //set 1M ~ 54Mbps.
1016
// printk("UP: ARFR=0xFFF\n");
1019
// Update Fail Tx rate and count.
1020
if(priv->LastFailTxRate != priv->CurrentOperaRate)
1022
priv->LastFailTxRate = priv->CurrentOperaRate;
1023
priv->FailTxRateCount = 0;
1024
priv->LastFailTxRateSS = -200; // Set lowest power.
1030
if(priv->TryupingCount > 0)
1031
priv->TryupingCount --;
1036
priv->TryDownCountLowData++;
1037
priv->TryupingCount = 0;
1039
// printk("DN: pHalData->TryDownCountLowData = %d\n",priv->TryDownCountLowData);
1040
// printk("DN: TryDownTh =%d\n", TryDownTh);
1041
// printk("DN: pHalData->bTryuping=%d\n", priv->bTryuping);
1044
//Check if Tx rate can be degraded or Test trying upgrading should fallback.
1045
if(priv->TryDownCountLowData > TryDownTh || priv->bTryuping)
1047
priv->TryDownCountLowData = 0;
1048
priv->bTryuping = false;
1049
// Update fail information.
1050
if(priv->LastFailTxRate == priv->CurrentOperaRate)
1052
priv->FailTxRateCount ++;
1053
// Record the Tx fail rate signal strength.
1054
if(CurrSignalStrength > priv->LastFailTxRateSS)
1056
priv->LastFailTxRateSS = CurrSignalStrength;
1061
priv->LastFailTxRate = priv->CurrentOperaRate;
1062
priv->FailTxRateCount = 1;
1063
priv->LastFailTxRateSS = CurrSignalStrength;
1065
priv->CurrentOperaRate = GetDegradeTxRate(dev, priv->CurrentOperaRate);
1067
// Reduce chariot training time at weak signal strength situation. SD3 ED demand.
1068
//[TRC Dell Lab] Revise Signal Threshold from -75 to -80 , Isaiah 2008-02-18 20:00
1069
if( (CurrSignalStrength < -80) && (priv->CurrentOperaRate > 72 ))
1071
priv->CurrentOperaRate = 72;
1072
// printk("DN: weak signal strength (%d), degrade to 36Mbps\n", CurrSignalStrength);
1075
//[TRC Dell Lab] Bypass 12/9/6, Isaiah 2008-02-18 20:00
1076
if(priv->CurrentOperaRate ==36)
1078
priv->bUpdateARFR=true;
1079
write_nic_word(dev, ARFR, 0x0F8F); //bypass 12/9/6
1080
// printk("DN: ARFR=0xF8F\n");
1082
else if(priv->bUpdateARFR)
1084
priv->bUpdateARFR=false;
1085
write_nic_word(dev, ARFR, 0x0FFF); //set 1M ~ 54Mbps.
1086
// printk("DN: ARFR=0xFFF\n");
1090
// When it is CCK rate, it may need to update initial gain to receive lower power packets.
1092
if(MgntIsCckRate(priv->CurrentOperaRate))
1094
bUpdateInitialGain = true;
1096
// printk("StaRateAdaptive87SE(): Degrade Tx Rate to %d\n", priv->CurrentOperaRate);
1101
if(priv->TryDownCountLowData > 0)
1102
priv->TryDownCountLowData --;
1105
// Keep the Tx fail rate count to equal to 0x15 at most.
1106
// Reduce the fail count at least to 10 sec if tx rate is tending stable.
1107
if(priv->FailTxRateCount >= 0x15 ||
1108
(!bTryUp && !bTryDown && priv->TryDownCountLowData == 0 && priv->TryupingCount && priv->FailTxRateCount > 0x6))
1110
priv->FailTxRateCount --;
1114
OfdmTxPwrIdx = priv->chtxpwr_ofdm[priv->ieee80211->current_network.channel];
1115
CckTxPwrIdx = priv->chtxpwr[priv->ieee80211->current_network.channel];
1117
//[TRC Dell Lab] Mac0x9e increase 2 level in 36M~18M situation, Isaiah 2008-02-18 24:00
1118
if((priv->CurrentOperaRate < 96) &&(priv->CurrentOperaRate > 22))
1120
u1bCck = read_nic_byte(dev, CCK_TXAGC);
1121
u1bOfdm = read_nic_byte(dev, OFDM_TXAGC);
1123
// case 1: Never enter High power
1124
if(u1bCck == CckTxPwrIdx )
1126
if(u1bOfdm != (OfdmTxPwrIdx+2) )
1128
priv->bEnhanceTxPwr= true;
1129
u1bOfdm = ((u1bOfdm+2) > 35) ? 35: (u1bOfdm+2);
1130
write_nic_byte(dev, OFDM_TXAGC, u1bOfdm);
1131
// printk("Enhance OFDM_TXAGC : +++++ u1bOfdm= 0x%x\n", u1bOfdm);
1134
// case 2: enter high power
1135
else if(u1bCck < CckTxPwrIdx)
1137
if(!priv->bEnhanceTxPwr)
1139
priv->bEnhanceTxPwr= true;
1140
u1bOfdm = ((u1bOfdm+2) > 35) ? 35: (u1bOfdm+2);
1141
write_nic_byte(dev, OFDM_TXAGC, u1bOfdm);
1142
//RT_TRACE(COMP_RATE, DBG_TRACE, ("Enhance OFDM_TXAGC(2) : +++++ u1bOfdm= 0x%x\n", u1bOfdm));
1146
else if(priv->bEnhanceTxPwr) //54/48/11/5.5/2/1
1148
u1bCck = read_nic_byte(dev, CCK_TXAGC);
1149
u1bOfdm = read_nic_byte(dev, OFDM_TXAGC);
1151
// case 1: Never enter High power
1152
if(u1bCck == CckTxPwrIdx )
1154
priv->bEnhanceTxPwr= false;
1155
write_nic_byte(dev, OFDM_TXAGC, OfdmTxPwrIdx);
1156
//printk("Recover OFDM_TXAGC : ===== u1bOfdm= 0x%x\n", OfdmTxPwrIdx);
1158
// case 2: enter high power
1159
else if(u1bCck < CckTxPwrIdx)
1161
priv->bEnhanceTxPwr= false;
1162
u1bOfdm = ((u1bOfdm-2) > 0) ? (u1bOfdm-2): 0;
1163
write_nic_byte(dev, OFDM_TXAGC, u1bOfdm);
1164
//RT_TRACE(COMP_RATE, DBG_TRACE, ("Recover OFDM_TXAGC(2): ===== u1bOfdm= 0x%x\n", u1bOfdm));
1170
// We need update initial gain when we set tx rate "from OFDM to CCK" or
1171
// "from CCK to OFDM".
1174
if(bUpdateInitialGain)
1176
if(MgntIsCckRate(priv->CurrentOperaRate)) // CCK
1178
if(priv->InitialGain > priv->RegBModeGainStage)
1180
priv->InitialGainBackUp= priv->InitialGain;
1182
if(CurrSignalStrength < -85) // Low power, OFDM [0x17] = 26.
1184
//SD3 SYs suggest that CurrSignalStrength < -65, ofdm 0x17=26.
1185
priv->InitialGain = priv->RegBModeGainStage;
1187
else if(priv->InitialGain > priv->RegBModeGainStage + 1)
1189
priv->InitialGain -= 2;
1193
priv->InitialGain --;
1195
printk("StaRateAdaptive87SE(): update init_gain to index %d for date rate %d\n",priv->InitialGain, priv->CurrentOperaRate);
1196
UpdateInitialGain(dev);
1201
if(priv->InitialGain < 4)
1203
priv->InitialGainBackUp= priv->InitialGain;
1205
priv->InitialGain ++;
1206
printk("StaRateAdaptive87SE(): update init_gain to index %d for date rate %d\n",priv->InitialGain, priv->CurrentOperaRate);
1207
UpdateInitialGain(dev);
1212
//Record the related info
1213
priv->LastRetryRate = CurrRetryRate;
1214
priv->LastTxThroughput = TxThroughput;
1215
priv->ieee80211->rate = priv->CurrentOperaRate * 5;
1218
void rtl8180_rate_adapter(struct work_struct * work)
1220
struct delayed_work *dwork = to_delayed_work(work);
1221
struct ieee80211_device *ieee = container_of(dwork,struct ieee80211_device,rate_adapter_wq);
1222
struct net_device *dev = ieee->dev;
1223
//struct r8180_priv *priv = ieee80211_priv(dev);
1224
// DMESG("---->rtl8180_rate_adapter");
1225
StaRateAdaptive87SE(dev);
1226
// DMESG("<----rtl8180_rate_adapter");
1228
void timer_rate_adaptive(unsigned long data)
1230
struct r8180_priv* priv = ieee80211_priv((struct net_device *)data);
1231
//DMESG("---->timer_rate_adaptive()\n");
1234
// DMESG("<----timer_rate_adaptive():driver is not up!\n");
1237
if((priv->ieee80211->iw_mode != IW_MODE_MASTER)
1238
&& (priv->ieee80211->state == IEEE80211_LINKED) &&
1239
(priv->ForcedDataRate == 0) )
1241
// DMESG("timer_rate_adaptive():schedule rate_adapter_wq\n");
1242
queue_work(priv->ieee80211->wq, (void *)&priv->ieee80211->rate_adapter_wq);
1243
// StaRateAdaptive87SE((struct net_device *)data);
1245
priv->rateadapter_timer.expires = jiffies + MSECS(priv->RateAdaptivePeriod);
1246
add_timer(&priv->rateadapter_timer);
1247
//DMESG("<----timer_rate_adaptive()\n");
1251
SwAntennaDiversityRxOk8185(
1252
struct net_device *dev,
1256
struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
1258
// printk("+SwAntennaDiversityRxOk8185: RxSs: %d\n", SignalStrength);
1262
if( priv->AdRxSignalStrength != -1)
1264
priv->AdRxSignalStrength = ((priv->AdRxSignalStrength*7) + (SignalStrength*3)) / 10;
1267
{ // Initialization case.
1268
priv->AdRxSignalStrength = SignalStrength;
1271
if( priv->LastRxPktAntenna ) //Main antenna.
1272
priv->AdMainAntennaRxOkCnt++;
1273
else // Aux antenna.
1274
priv->AdAuxAntennaRxOkCnt++;
1276
// printk("-SwAntennaDiversityRxOk8185: AdRxOkCnt: %d AdRxSignalStrength: %d\n", priv->AdRxOkCnt, priv->AdRxSignalStrength);
1280
// Change Antenna Switch.
1284
struct net_device *dev,
1288
struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
1289
bool bAntennaSwitched = false;
1291
// printk("+SetAntenna8185(): Antenna is switching to: %d \n", u1bAntennaIndex);
1293
switch(u1bAntennaIndex)
1296
/* Mac register, main antenna */
1297
write_nic_byte(dev, ANTSEL, 0x03);
1299
write_phy_cck(dev, 0x11, 0x9b); /* Config CCK RX antenna. */
1300
write_phy_ofdm(dev, 0x0d, 0x5c); /* Config OFDM RX antenna. */
1302
bAntennaSwitched = true;
1306
/* Mac register, aux antenna */
1307
write_nic_byte(dev, ANTSEL, 0x00);
1309
write_phy_cck(dev, 0x11, 0xbb); /* Config CCK RX antenna. */
1310
write_phy_ofdm(dev, 0x0d, 0x54); /* Config OFDM RX antenna. */
1312
bAntennaSwitched = true;
1317
printk("SetAntenna8185: unknown u1bAntennaIndex(%d)\n", u1bAntennaIndex);
1321
if(bAntennaSwitched)
1323
priv->CurrAntennaIndex = u1bAntennaIndex;
1326
// printk("-SetAntenna8185(): return (%#X)\n", bAntennaSwitched);
1328
return bAntennaSwitched;
1332
// Toggle Antenna switch.
1336
struct net_device *dev
1339
struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
1343
if(priv->CurrAntennaIndex == 0)
1345
bResult = SetAntenna8185(dev, 1);
1347
// printk("SwitchAntenna(): switching to antenna 1 ......\n");
1348
// bResult = SetAntenna8185(dev, 1);//-by amy 080312
1352
bResult = SetAntenna8185(dev, 0);
1354
// printk("SwitchAntenna(): switching to antenna 0 ......\n");
1355
// bResult = SetAntenna8185(dev, 0);//-by amy 080312
1362
// Engine of SW Antenna Diversity mechanism.
1363
// Since 8187 has no Tx part information,
1364
// this implementation is only dependend on Rx part information.
1366
// 2006.04.17, by rcnjko.
1370
struct net_device *dev
1373
struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
1374
bool bSwCheckSS=false;
1375
// printk("+SwAntennaDiversity(): CurrAntennaIndex: %d\n", priv->CurrAntennaIndex);
1376
// printk("AdTickCount is %d\n",priv->AdTickCount);
1380
priv->AdTickCount++;
1382
printk("(1) AdTickCount: %d, AdCheckPeriod: %d\n",
1383
priv->AdTickCount, priv->AdCheckPeriod);
1384
printk("(2) AdRxSignalStrength: %ld, AdRxSsThreshold: %ld\n",
1385
priv->AdRxSignalStrength, priv->AdRxSsThreshold);
1387
// priv->AdTickCount++;//-by amy 080312
1390
if(priv->ieee80211->state != IEEE80211_LINKED)
1392
// printk("SwAntennaDiversity(): Case 1. No Link.\n");
1394
priv->bAdSwitchedChecking = false;
1395
// I switch antenna here to prevent any one of antenna is broken before link established, 2006.04.18, by rcnjko..
1398
// Case 2. Linked but no packet received.
1399
else if(priv->AdRxOkCnt == 0)
1401
// printk("SwAntennaDiversity(): Case 2. Linked but no packet received.\n");
1403
priv->bAdSwitchedChecking = false;
1406
// Case 3. Evaluate last antenna switch action and undo it if necessary.
1407
else if(priv->bAdSwitchedChecking == true)
1409
// printk("SwAntennaDiversity(): Case 3. Evaluate last antenna switch action.\n");
1411
priv->bAdSwitchedChecking = false;
1413
// Adjust Rx signal strength threshold.
1414
priv->AdRxSsThreshold = (priv->AdRxSignalStrength + priv->AdRxSsBeforeSwitched) / 2;
1416
priv->AdRxSsThreshold = (priv->AdRxSsThreshold > priv->AdMaxRxSsThreshold) ?
1417
priv->AdMaxRxSsThreshold: priv->AdRxSsThreshold;
1418
if(priv->AdRxSignalStrength < priv->AdRxSsBeforeSwitched)
1419
{ // Rx signal strength is not improved after we swtiched antenna. => Swich back.
1420
// printk("SwAntennaDiversity(): Rx Signal Strength is not improved, CurrRxSs: %d, LastRxSs: %d\n",
1421
// priv->AdRxSignalStrength, priv->AdRxSsBeforeSwitched);
1423
// Increase Antenna Diversity checking period due to bad decision.
1424
priv->AdCheckPeriod *= 2;
1426
// Increase Antenna Diversity checking period.
1427
if(priv->AdCheckPeriod > priv->AdMaxCheckPeriod)
1428
priv->AdCheckPeriod = priv->AdMaxCheckPeriod;
1430
// Wrong deceision => switch back.
1434
{ // Rx Signal Strength is improved.
1435
// printk("SwAntennaDiversity(): Rx Signal Strength is improved, CurrRxSs: %d, LastRxSs: %d\n",
1436
// priv->AdRxSignalStrength, priv->AdRxSsBeforeSwitched);
1438
// Reset Antenna Diversity checking period to its min value.
1439
priv->AdCheckPeriod = priv->AdMinCheckPeriod;
1442
// printk("SwAntennaDiversity(): AdRxSsThreshold: %d, AdCheckPeriod: %d\n",
1443
// priv->AdRxSsThreshold, priv->AdCheckPeriod);
1445
// Case 4. Evaluate if we shall switch antenna now.
1446
// Cause Table Speed is very fast in TRC Dell Lab, we check it every time.
1447
else// if(priv->AdTickCount >= priv->AdCheckPeriod)//-by amy 080312
1449
// printk("SwAntennaDiversity(): Case 4. Evaluate if we shall switch antenna now.\n");
1451
priv->AdTickCount = 0;
1454
// <Roger_Notes> We evaluate RxOk counts for each antenna first and than
1455
// evaluate signal strength.
1456
// The following operation can overcome the disability of CCA on both two antennas
1457
// When signal strength was extremely low or high.
1462
// Evaluate RxOk count from each antenna if we shall switch default antenna now.
1463
// Added by Roger, 2008.02.21.
1465
if((priv->AdMainAntennaRxOkCnt < priv->AdAuxAntennaRxOkCnt)
1466
&& (priv->CurrAntennaIndex == 0))
1467
{ // We set Main antenna as default but RxOk count was less than Aux ones.
1469
// printk("SwAntennaDiversity(): Main antenna RxOK is poor, AdMainAntennaRxOkCnt: %d, AdAuxAntennaRxOkCnt: %d\n",
1470
// priv->AdMainAntennaRxOkCnt, priv->AdAuxAntennaRxOkCnt);
1472
// Switch to Aux antenna.
1474
priv->bHWAdSwitched = true;
1476
else if((priv->AdAuxAntennaRxOkCnt < priv->AdMainAntennaRxOkCnt)
1477
&& (priv->CurrAntennaIndex == 1))
1478
{ // We set Aux antenna as default but RxOk count was less than Main ones.
1480
// printk("SwAntennaDiversity(): Aux antenna RxOK is poor, AdMainAntennaRxOkCnt: %d, AdAuxAntennaRxOkCnt: %d\n",
1481
// priv->AdMainAntennaRxOkCnt, priv->AdAuxAntennaRxOkCnt);
1483
// Switch to Main antenna.
1485
priv->bHWAdSwitched = true;
1488
{// Default antenna is better.
1490
// printk("SwAntennaDiversity(): Default antenna is better., AdMainAntennaRxOkCnt: %d, AdAuxAntennaRxOkCnt: %d\n",
1491
// priv->AdMainAntennaRxOkCnt, priv->AdAuxAntennaRxOkCnt);
1493
// Still need to check current signal strength.
1494
priv->bHWAdSwitched = false;
1497
// <Roger_Notes> We evaluate Rx signal strength ONLY when default antenna
1498
// didn't changed by HW evaluation.
1501
// [TRC Dell Lab] SignalStrength is inaccuracy. Isaiah 2008-03-05
1502
// For example, Throughput of aux is better than main antenna(about 10M v.s 2M),
1503
// but AdRxSignalStrength is less than main.
1504
// Our guess is that main antenna have lower throughput and get many change
1505
// to receive more CCK packets(ex.Beacon) which have stronger SignalStrength.
1507
if( (!priv->bHWAdSwitched) && (bSwCheckSS))
1510
// Evaluate Rx signal strength if we shall switch antenna now.
1511
if(priv->AdRxSignalStrength < priv->AdRxSsThreshold)
1512
{ // Rx signal strength is weak => Switch Antenna.
1513
// printk("SwAntennaDiversity(): Rx Signal Strength is weak, CurrRxSs: %d, RxSsThreshold: %d\n",
1514
// priv->AdRxSignalStrength, priv->AdRxSsThreshold);
1516
priv->AdRxSsBeforeSwitched = priv->AdRxSignalStrength;
1517
priv->bAdSwitchedChecking = true;
1522
{ // Rx signal strength is OK.
1523
// printk("SwAntennaDiversity(): Rx Signal Strength is OK, CurrRxSs: %d, RxSsThreshold: %d\n",
1524
// priv->AdRxSignalStrength, priv->AdRxSsThreshold);
1526
priv->bAdSwitchedChecking = false;
1527
// Increase Rx signal strength threshold if necessary.
1528
if( (priv->AdRxSignalStrength > (priv->AdRxSsThreshold + 10)) && // Signal is much stronger than current threshold
1529
priv->AdRxSsThreshold <= priv->AdMaxRxSsThreshold) // Current threhold is not yet reach upper limit.
1531
priv->AdRxSsThreshold = (priv->AdRxSsThreshold + priv->AdRxSignalStrength) / 2;
1532
priv->AdRxSsThreshold = (priv->AdRxSsThreshold > priv->AdMaxRxSsThreshold) ?
1533
priv->AdMaxRxSsThreshold: priv->AdRxSsThreshold;//+by amy 080312
1536
// Reduce Antenna Diversity checking period if possible.
1537
if( priv->AdCheckPeriod > priv->AdMinCheckPeriod )
1539
priv->AdCheckPeriod /= 2;
1545
// Reset antenna diversity Rx related statistics.
1546
priv->AdRxOkCnt = 0;
1547
priv->AdMainAntennaRxOkCnt = 0;
1548
priv->AdAuxAntennaRxOkCnt = 0;
1551
// priv->AdRxOkCnt = 0;//-by amy 080312
1553
// printk("-SwAntennaDiversity()\n");
1558
// Return TRUE if we shall perform Tx Power Tracking Mecahnism, FALSE otherwise.
1561
CheckTxPwrTracking( struct net_device *dev)
1563
struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
1565
if(!priv->bTxPowerTrack)
1570
//lzm reserved 080826
1571
//if(priv->bScanInProgress)
1576
//if 87SE is in High Power , don't do Tx Power Tracking. asked by SD3 ED. 2008-08-08 Isaiah
1577
if(priv->bToUpdateTxPwr)
1588
// Timer callback function of SW Antenna Diversity.
1591
SwAntennaDiversityTimerCallback(
1592
struct net_device *dev
1595
struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
1596
RT_RF_POWER_STATE rtState;
1598
//printk("+SwAntennaDiversityTimerCallback()\n");
1601
// We do NOT need to switch antenna while RF is off.
1602
// 2007.05.09, added by Roger.
1604
rtState = priv->eRFPowerState;
1606
if (rtState == eRfOff)
1608
// printk("SwAntennaDiversityTimer - RF is OFF.\n");
1611
else if (rtState == eRfSleep)
1613
// Don't access BB/RF under Disable PLL situation.
1614
//RT_TRACE((COMP_RF|COMP_ANTENNA), DBG_LOUD, ("SwAntennaDiversityTimerCallback(): RF is Sleep => skip it\n"));
1617
SwAntennaDiversity(dev);
1623
priv->SwAntennaDiversityTimer.expires = jiffies + MSECS(ANTENNA_DIVERSITY_TIMER_PERIOD);
1624
add_timer(&priv->SwAntennaDiversityTimer);
1627
//printk("-SwAntennaDiversityTimerCallback()\n");