// Constructor
internal RTClockApic(PnpConfig config, Apic apic)
{
int cpuId;
Microsoft.Singularity.Hal.Platform p = Microsoft.Singularity.Hal.Platform.ThePlatform;
cpuId = p.ApicId;
DebugStub.Print("RTClock: create\n");
// /pnp/08/03/01/PNP0B00 0003 cfg dis : ISA RTC Controller : AT RTC
// IRQ mask=0100 type=47
// I/O Port inf=01 min=0070 max=0070 aln=01 len=02 0070..0071
this.config = config;
this.irq = ((IoIrqRange)config.DynamicRanges[1]).Irq;
this.apic = apic;
this.rtcSpinLock = new SpinLock(SpinLock.Types.RTClock);
rtcadd = ((IoPortRange)config.DynamicRanges[0])
.PortAtOffset(0, 1, Access.ReadWrite);
rtcdat = ((IoPortRange)config.DynamicRanges[0])
.PortAtOffset(1, 1, Access.ReadWrite);
if (cpuId == 0)
{
this.interrupt = Initialize();
DebugStub.Print("RTClock: interrupt {0:x2}\n",
__arglist(this.interrupt));
}
}
uint capabilities; // bits 0-31 at offset 0
internal Hpet(PnpConfig config)
{
int cpuId;
Microsoft.Singularity.Hal.Platform p = Microsoft.Singularity.Hal.Platform.ThePlatform;
cpuId = p.ApicId;
this.config = config;
IoMemoryRange imr = (IoMemoryRange)config.DynamicRanges[0];
this.region = imr.MemoryAtOffset(0, (int)imr.Length.ToUInt32(),
Access.ReadWrite);
capabilities = region.Read32(0x00);
periodFs = region.Read32(0x04);
if (cpuId == 0)
{
DebugStub.Print("new Hpet writing regions\n");
// Disable interrupts on timers
for (uint i = 0; i <= MaxCounterIndex; i++)
{
DisableInterrupt(i);
}
uint gc = region.Read32(0x10) & ~3u; // Clear legacy bits
region.Write32(0x10, gc | 1); // Enable main counter
}
}
public override void ClearInterrupt()
{
Microsoft.Singularity.Hal.Platform p = Microsoft.Singularity.Hal.Platform.ThePlatform;
if (hpetClock == null)
{
pmClock.Update();
}
else
{
hpetClock.Update();
}
rtClock.ClearInterrupt();
tscSnapshotValid = false;
}
public override void ClearInterrupt()
{
bool en = Processor.DisableInterrupts();
this.AcquireLock();
try {
Microsoft.Singularity.Hal.Platform p = Microsoft.Singularity.Hal.Platform.ThePlatform;
if (hpetClock == null) {
pmClock.Update();
}
else {
hpetClock.Update();
}
rtClock.ClearInterrupt();
}
finally {
this.ReleaseLock();
Processor.RestoreInterrupts(en);
}
}
internal void BroadcastFreezeIPI()
{
unsafe {
Microsoft.Singularity.Hal.Platform p = Microsoft.Singularity.Hal.Platform.ThePlatform;
int cpuId = p.ApicId;
for (uint i = 0; i < Processor.GetProcessorCount(); i++)
{
uint to = i;
if (to != cpuId)
{
Write(ApicOffset.IcrHi, 0);
SendIPI((((uint)to & 0x0ff) << 24),
IcrFlags.NoShortHand | IcrFlags.Assert |
IcrFlags.NMI | IcrFlags.Physical);
}
}
}
}
public override void ClearInterrupt()
{
Microsoft.Singularity.Hal.Platform p = Microsoft.Singularity.Hal.Platform.ThePlatform;
apic.AckIrq(Apic.TimerIrq);
SetNextInterrupt(maxInterruptInterval);
}