internal static void Setup()
{
System.DebugStub.Print("Dma.Setup 1. ");
try {
CompilerIntrinsics.Cli();
ioMemory = NucleusCalls.PciDmaBuffer();
ioPhysical = NucleusCalls.PciDmaPhysicalAddr();
// The IO-MMU tables map 2MB, aligned by 2MB
uint superPageSize = 0x200000;
uint ioSuperPage = (ioPhysical + 2 * superPageSize) - (ioPhysical & (superPageSize - 1));
allocOffset = (int)(ioSuperPage - ioPhysical);
}
finally {
CompilerIntrinsics.Sti();
}
System.DebugStub.Print("Dma.Setup 2. ioPhysical = 0x" + ioPhysical.ToString("X") + " allocOffset = 0x" + allocOffset.ToString("X") + ". ");
}
