/*

  This Source Code Form is subject to the terms of the Mozilla Public

  License, v. 2.0. If a copy of the MPL was not distributed with this

  file, You can obtain one at http://mozilla.org/MPL/2.0/.

  Copyright (C) 2010 Michael Möller <mmoeller@openhardwaremonitor.org>

*/

using System;

using System.Runtime.InteropServices;

namespace OpenHardwareMonitor.Hardware {

  [StructLayout(LayoutKind.Sequential, Pack = 1)]

  internal struct IOControlCode {

    private uint code;

    public IOControlCode(uint deviceType, uint function, Access access) :

      this(deviceType, function, Method.Buffered, access) { }

    public IOControlCode(uint deviceType, uint function, Method method, 

      Access access) 

    {

      code = (deviceType << 16) | 

        ((uint)access << 14) | (function << 2) | (uint)method;

    }

    public enum Method : uint {

      Buffered = 0,

      InDirect = 1,

      OutDirect = 2,

      Neither = 3

    }

    public enum Access : uint {

      Any = 0,

      Read = 1,

      Write = 2

    }

  }    

}