internal static void Parse(IoMemory region,
int length,
uint entryCount)
{
int offset = 0;
for (int i = 0; i < entryCount; i++)
{
switch (region.Read8(offset))
{
case MpProcessorEntry.EntryType:
ProcessorEntries.Add(
MpProcessorEntry.Parse(region, length, ref offset)
);
break;
case MpBusEntry.EntryType:
BusEntries.Add(
MpBusEntry.Parse(region, length, ref offset)
);
break;
case MpIoApicEntry.EntryType:
IoApicEntries.Add(
MpIoApicEntry.Parse(region, length, ref offset)
);
break;
case MpInterruptEntry.IoEntryType:
IoInterruptEntries.Add(
MpInterruptEntry.Parse(region, length, ref offset)
);
break;
case MpInterruptEntry.LocalEntryType:
LocalInterruptEntries.Add(
MpInterruptEntry.Parse(region, length, ref offset)
);
break;
}
}
}
internal void ConfigurePciInterrupt(IoApic ioApic, MpInterruptEntry e)
{
byte vector = IrqToInterrupt(e.ApicLine);
IoBits iobits = (e.PolarityType == Polarity.ActiveHigh) ?
IoBits.IntPolActiveHigh : IoBits.IntPolActiveLow;
iobits |= (e.TriggerType == Trigger.Edge) ?
IoBits.TriggerModeEdge : IoBits.TriggerModeLevel;
iobits |= IoBits.DstPhysical;
iobits |= IoBits.DelModFixed;
iobits |= IoBits.IrqMask;
RedirectionEntry r = new RedirectionEntry(this.Id, iobits, vector);
ioApic.SetRedirectionEntry(e.ApicLine, ref r);
#if PRINT_IO_APICS
DebugStub.Print("Added PCI interrupt for apic 0x{0:x}: Line 0x{1:x} => 0x{2:x}\n",
__arglist(ioApic.GetId(), e.ApicLine, vector));
#endif
}
internal static MpInterruptEntry Parse(IoMemory region,
int length,
ref int offset)
{
Debug.Assert(length >= offset + Length);
byte entry = region.Read8(offset + 0);
Debug.Assert(entry == IoEntryType || entry == LocalEntryType);
MpInterruptEntry e = new MpInterruptEntry();
e.EntryType = entry;
e.Interrupt = region.Read8(offset + 1);
e.Flags = region.Read16(offset + 2);
e.BusId = region.Read8(offset + 4);
e.BusIrq = region.Read8(offset + 5);
e.ApicId = region.Read8(offset + 6);
e.ApicLine = region.Read8(offset + 7);
e.DebugPrint();
offset += Length;
return(e);
}