public static void AcpiOsUnmapMemory(void *LogicalAddress, uint Length)
{
// Align address down so we can get the offset
uint down = Paging.AlignDown((uint)LogicalAddress);
uint offset = (uint)LogicalAddress - down;
// Length in rounded pagesize
uint len = Paging.AlignUp(Length + offset);
Paging.UnMapKeepPhysical((void *)down, (int)len);
}
public static void *AcpiOsMapMemory(ulong PhysicalAddress, uint Length)
{
// Align address down so we can get the offset
uint down = Paging.AlignDown((uint)PhysicalAddress);
uint offset = (uint)PhysicalAddress - down;
// Length in rounded pagesize
uint len = Paging.AlignUp(Length + offset);
// Map
void *mapped = Paging.MapToVirtual(Paging.CurrentDirectory, (int)down, (int)len, Paging.PageFlags.Present | Paging.PageFlags.Writable);
return((void *)((uint)mapped + offset));
}
