public static Boolean MsIoUnmapMemory(IntPtr hDriver, APIDef.MSIO_PHYSICAL_MEMORY_INFO MemMapInfo)
{
IntPtr pMpmi = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(APIDef.MSIO_PHYSICAL_MEMORY_INFO)));
APIDef.RtlZeroMemory(pMpmi, Marshal.SizeOf(typeof(APIDef.MSIO_PHYSICAL_MEMORY_INFO)));
Marshal.StructureToPtr(MemMapInfo, pMpmi, true);
APIDef.IO_STATUS_BLOCK isb = new APIDef.IO_STATUS_BLOCK();
UInt32 CallRes = APIDef.NtDeviceIoControlFile(
hDriver,
IntPtr.Zero,
IntPtr.Zero,
IntPtr.Zero,
ref isb,
APIDef.IOCTL_MSIO_UNMAPPHYSADDR,
pMpmi,
(UInt32)Marshal.SizeOf(typeof(APIDef.MSIO_PHYSICAL_MEMORY_INFO)),
pMpmi,
(UInt32)Marshal.SizeOf(typeof(APIDef.MSIO_PHYSICAL_MEMORY_INFO)));
// Free alloc
Marshal.FreeHGlobal(pMpmi);
if (CallRes != APIDef.NTSTATUS_STATUS_SUCCESS)
{
return(false);
}
else
{
return(true);
}
}
public static APIDef.MSIO_PHYSICAL_MEMORY_INFO MsIoAllocatePhysicalMemory(IntPtr hDriver, IntPtr BaseAddress, UInt32 Size)
{
APIDef.MSIO_PHYSICAL_MEMORY_INFO mpmi = new APIDef.MSIO_PHYSICAL_MEMORY_INFO();
mpmi.ViewSize = (UIntPtr)(BaseAddress.ToInt64() + Size);
IntPtr pMpmi = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(APIDef.MSIO_PHYSICAL_MEMORY_INFO)));
APIDef.RtlZeroMemory(pMpmi, Marshal.SizeOf(typeof(APIDef.MSIO_PHYSICAL_MEMORY_INFO)));
Marshal.StructureToPtr(mpmi, pMpmi, true);
APIDef.IO_STATUS_BLOCK isb = new APIDef.IO_STATUS_BLOCK();
UInt32 CallRes = APIDef.NtDeviceIoControlFile(
hDriver,
IntPtr.Zero,
IntPtr.Zero,
IntPtr.Zero,
ref isb,
APIDef.IOCTL_MSIO_MAPPHYSTOLIN,
pMpmi,
(UInt32)Marshal.SizeOf(typeof(APIDef.MSIO_PHYSICAL_MEMORY_INFO)),
pMpmi,
(UInt32)Marshal.SizeOf(typeof(APIDef.MSIO_PHYSICAL_MEMORY_INFO)));
if (CallRes != APIDef.NTSTATUS_STATUS_SUCCESS)
{
// Free alloc
Marshal.FreeHGlobal(pMpmi);
// Make sure baseaddress is null
mpmi.BaseAddess = IntPtr.Zero;
return(mpmi);
}
else
{
// Ptr->Struct
mpmi = (APIDef.MSIO_PHYSICAL_MEMORY_INFO)Marshal.PtrToStructure(pMpmi, typeof(APIDef.MSIO_PHYSICAL_MEMORY_INFO));
// Free alloc
Marshal.FreeHGlobal(pMpmi);
return(mpmi);
}
}