28 lines
857 B
C
28 lines
857 B
C
//========= Copyright Valve Corporation, All rights reserved. ============//
|
|
//
|
|
// Purpose:
|
|
//
|
|
// $NoKeywords: $
|
|
//
|
|
//=============================================================================//
|
|
#ifndef IOCTLCODES_H
|
|
#define IOCTLCODES_H
|
|
#pragma once
|
|
|
|
// Define the IOCTL codes we will use. The IOCTL code contains a command
|
|
// identifier, plus other information about the device, the type of access
|
|
// with which the file must have been opened, and the type of buffering.
|
|
|
|
// Device type -- in the "User Defined" range."
|
|
#define DEVICE_FILE_TYPE 40000
|
|
|
|
// The IOCTL function codes from 0x800 to 0xFFF are for customer use.
|
|
|
|
#define IOCTL_WRITE_MSR \
|
|
CTL_CODE(DEVICE_FILE_TYPE, 0x900, METHOD_BUFFERED, FILE_READ_ACCESS)
|
|
|
|
#define IOCTL_READ_MSR \
|
|
CTL_CODE(DEVICE_FILE_TYPE, 0x901, METHOD_BUFFERED, FILE_READ_ACCESS)
|
|
|
|
#endif IOCTLCODES_H
|