public void Write32(AcpiObject.RegionSpace regionSpace, ulong offset, uint value)
{
#if DUMP_RAW_READ_WRITES
DebugStub.WriteLine("ACPI write: space: " + regionSpace + ", offset: " + offset + ", bytes: " + 4 + ", value: " + value.ToString("X"));
#endif
switch (regionSpace)
{
case AcpiObject.RegionSpace.SystemMemory:
IoMemory region = IoMemory.MapPhysicalMemory(offset, 4, true /*readable*/, true /*writable*/);
region.Write32(0, value);
break;
case AcpiObject.RegionSpace.SystemIO:
IoPort port = new IoPort((ushort)offset, 4, Access.ReadWrite);
port.Write32(value);
break;
case AcpiObject.RegionSpace.PCI_Config:
pciConfigAddressPort.Write32(PciConfigEnableMask | (uint)offset);
pciConfigDataPort.Write32(value);
break;
default:
throw new Exception("Unimplemented operation region type" + regionSpace);
}
}
public byte Read8(AcpiObject.RegionSpace regionSpace, ulong offset)
{
byte result;
switch (regionSpace)
{
case AcpiObject.RegionSpace.SystemMemory:
// TODO: This is a first stab - ideally the AcpiObject.OperationRegion
// ought to be holding onto an IoMemoryRange and passing it in repeatedly.
IoMemory region = IoMemory.MapPhysicalMemory(offset, 1, true /*readable*/, false /*writable*/);
result = region.Read8(0);
break;
case AcpiObject.RegionSpace.SystemIO:
IoPort port = new IoPort((ushort)offset, 1, Access.Read);
result = port.Read8();
break;
case AcpiObject.RegionSpace.PCI_Config:
pciConfigAddressPort.Write32(PciConfigEnableMask | (uint)offset);
result = pciConfigDataPort.Read8();
break;
default:
throw new Exception("Unimplemented operation region type" + regionSpace);
}
#if DUMP_RAW_READ_WRITES
DebugStub.WriteLine("ACPI read: space: " + regionSpace + ", offset: " + offset + ", bytes: " + 1 + ", result: " + result.ToString("X"));
#endif
return(result);
}
public void BmPrepareController(IdeRequest !ideRequest)
{
// Perform steps 1 and 2 above: set up PRD, clear
// error snd interrupt
// Init. Scatter Gather List Register
uint thePrd = FillPrdTable(ideRequest);
prdPort.Write32(thePrd);
// Clear Errors
byte status = (byte)(BUSMASTER_STATUS_MASK_INTERRUPT | BUSMASTER_STATUS_MASK_ERROR);
statusPort.Write8(status);
return;
} // BmPrepareController