void DynamicCCKThreshold(struct net_device *dev)
{
struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
u16 CCK_Up_Th;
u16 CCK_Lw_Th;
u16 CCKFalseAlarm;
CCK_Up_Th = priv->CCKUpperTh;
CCK_Lw_Th = priv->CCKLowerTh;
CCKFalseAlarm = (u16)((priv->FalseAlarmRegValue & 0x0000ffff) >> 8);
if(priv->StageCCKTh < 3 && CCKFalseAlarm >= CCK_Up_Th)
{
priv->StageCCKTh ++;
UpdateCCKThreshold(dev);
}
else if(priv->StageCCKTh > 0 && CCKFalseAlarm <= CCK_Lw_Th)
{
priv->StageCCKTh --;
UpdateCCKThreshold(dev);
}
}
void DynamicInitGain(_adapter *padapter)
{
struct mib_info *_sys_mib = &(padapter->_sys_mib);
u16 CCKFalseAlarm, OFDMFalseAlarm;
u16 OfdmFA1, OfdmFA2;
u16 CCK_Up_Th, CCK_Lw_Th;
int InitialGainStep = 7; // The number of initial gain stages.
int LowestGainStage = 4; // The capable lowest stage of performing dig workitem.
set_current_state(TASK_INTERRUPTIBLE);
#ifdef TODO
_sys_mib->FalseAlarmRegValue = read32(padapter, CCK_FALSE_ALARM);
#endif
CCKFalseAlarm = (u16)(_sys_mib->FalseAlarmRegValue & 0x0000ffff);
OFDMFalseAlarm = (u16)( (_sys_mib->FalseAlarmRegValue>>16) & 0x0000ffff);
OfdmFA1 = 0x15;
OfdmFA2 = ((u16)(_sys_mib->RegDigOfdmFaUpTh)) << 8;
//OfdmFA2 = 0xC00;
DEBUG_INFO(("\n r8187_dig_thread:FalseAlarmRegValue = %8x \n", _sys_mib->FalseAlarmRegValue));
// The number of initial gain steps is different, by Bruce, 2007-04-13.
if(_sys_mib->InitialGain == 0) //autoDIG
{// Advised from SD3 DZ, by Bruce, 2007-06-05.
_sys_mib->InitialGain = 4; // In 87B, m74dBm means State 4 (m82dBm)
}
#ifdef TODO
if(padapter->registrypriv.chip_version != VERSION_8187B_B)
{ // Advised from SD3 DZ, by Bruce, 2007-06-05.
OfdmFA1 = 0x20;
}
#endif
InitialGainStep = 8;
LowestGainStage = 1;
if (OFDMFalseAlarm > OfdmFA1)
{
if (OFDMFalseAlarm > OfdmFA2)
{
_sys_mib->DIG_NumberFallbackVote++;
if (_sys_mib->DIG_NumberFallbackVote >1)
{
// serious OFDM False Alarm, need fallback
// By Bruce, 2007-03-29.
// if (priv->InitialGain < 7) // In 87B, m66dBm means State 7 (m74dBm)
if (_sys_mib->InitialGain < InitialGainStep)
{
_sys_mib->InitialGain = (_sys_mib->InitialGain + 1);
UpdateInitialGain(padapter); // 2005.01.06, by rcnjko.
}
_sys_mib->DIG_NumberFallbackVote = 0;
_sys_mib->DIG_NumberUpgradeVote = 0;
}
}
else
{
if (_sys_mib->DIG_NumberFallbackVote)
_sys_mib->DIG_NumberFallbackVote--;
}
_sys_mib->DIG_NumberUpgradeVote=0;
}
else //OFDM False Alarm < 0x15
{
if (_sys_mib->DIG_NumberFallbackVote)
_sys_mib->DIG_NumberFallbackVote--;
_sys_mib->DIG_NumberUpgradeVote++;
if (_sys_mib->DIG_NumberUpgradeVote>9)
{
if (_sys_mib->InitialGain > LowestGainStage) // In 87B, m78dBm means State 4 (m864dBm)
{
_sys_mib->InitialGain = (_sys_mib->InitialGain - 1);
UpdateInitialGain(padapter); // 2005.01.06, by rcnjko.
}
_sys_mib->DIG_NumberFallbackVote = 0;
_sys_mib->DIG_NumberUpgradeVote = 0;
}
}
// By Bruce, 2007-03-29.
// Dynamically update CCK Power Detection Threshold.
CCK_Up_Th = _sys_mib->CCKUpperTh;
CCK_Lw_Th = _sys_mib->CCKLowerTh;
CCKFalseAlarm = (u16)((_sys_mib->FalseAlarmRegValue & 0x0000ffff) >> 8); // We only care about the higher byte.
if( _sys_mib->StageCCKTh < 3 && CCKFalseAlarm >= CCK_Up_Th)
{
_sys_mib->StageCCKTh ++;
UpdateCCKThreshold(padapter);
}
else if(_sys_mib->StageCCKTh > 0 && CCKFalseAlarm <= CCK_Lw_Th)
{
_sys_mib->StageCCKTh --;
UpdateCCKThreshold(padapter);
}
}
