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PcAtChipsetPkg HPET Timer DXE Driver: Update CPU Arch Protocol.SetTimerPeriod() to program HPET/IOAPIC register with APIC ID of current BSP in case the BSP has been switched. 

Signed-off-by: rsun3
Reviewed-by: li-elvin


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12778 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
rsun3 2011-11-25 01:59:50 +00:00
parent 795bb9b6c4
commit 9ff904b046
1 changed files with 13 additions and 4 deletions
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17
PcAtChipsetPkg/HpetTimerDxe/HpetTimer.c
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@ -492,9 +492,10 @@ TimerDriverSetTimerPeriod (
IN UINT64 TimerPeriod
)
{
UINT64 MainCounter;
UINT64 Delta;
UINT64 CurrentComparator;
UINT64 MainCounter;
UINT64 Delta;
UINT64 CurrentComparator;
HPET_TIMER_MSI_ROUTE_REGISTER HpetTimerMsiRoute;
//
// Disable HPET timer when adjusting the timer period
@ -576,6 +577,13 @@ TimerDriverSetTimerPeriod (
// Enable HPET Timer interrupt generation
//
if (mTimerConfiguration.Bits.MsiInterruptCapablity != 0 && FeaturePcdGet (PcdHpetMsiEnable)) {
//
// Program MSI Address and MSI Data values in the selected HPET Timer
// Program HPET register with APIC ID of current BSP in case BSP has been switched
//
HpetTimerMsiRoute.Bits.Address = GetApicMsiAddress ();
HpetTimerMsiRoute.Bits.Value = (UINT32)GetApicMsiValue (PcdGet8 (PcdHpetLocalApicVector), LOCAL_APIC_DELIVERY_MODE_LOWEST_PRIORITY, FALSE, FALSE);
HpetWrite (HPET_TIMER_MSI_ROUTE_OFFSET + mTimerIndex * HPET_TIMER_STRIDE, HpetTimerMsiRoute.Uint64);
//
// Enable HPET MSI Interrupt
//
@ -583,8 +591,9 @@ TimerDriverSetTimerPeriod (
} else {
//
// Enable timer interrupt through I/O APIC
// Program IOAPIC register with APIC ID of current BSP in case BSP has been switched
//
IoApicEnableInterrupt (mTimerIrq, TRUE);
IoApicConfigureInterrupt (mTimerIrq, PcdGet8 (PcdHpetLocalApicVector), IO_APIC_DELIVERY_MODE_LOWEST_PRIORITY, TRUE, FALSE);
}
//