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mapmem.h

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/*++

Copyright (c) 1993  Microsoft Corporation

Module Name:

    mapmem.h

Abstract:


Environment:

    kernel & User mode

Notes:


Revision History:
        May 31, 1996 Will Shackleford added #include <windows.h> and <winioctl.h> the InterfaceType into
           this header file, and changed BusAddress from a PHYSICAL_ADDRESS to a
           LARGE_INTEGER to make this a proper self-sufficient header file. (Also
           added #ifndef MAPMEM_H to avoid multiple inclusion errors.)

--*/

#ifndef MAPMEM_H
#define MAPMEM_H


#if defined(WIN32) && !defined(USE_OLD_WINSOCK)
/* Lame problem if windows.h is included before winsock2.h many redefined
 compiler errors result. */
#include <winsock2.h>
#endif

#include <windows.h>            // LARGE_INTEGER, ULONG,
#include <windef.h>
#include <winioctl.h>           // CTL_CODE, METHOD_BUFFERED, FILE_ANY_ACCESS

//
// Define the various device type values.  Note that values used by Microsoft
// Corporation are in the range 0-32767, and 32768-65535 are reserved for use
// by customers.
//

#define FILE_DEVICE_MAPMEM  0x00008000



//
// Macro definition for defining IOCTL and FSCTL function control codes.  Note
// that function codes 0-2047 are reserved for Microsoft Corporation, and
// 2048-4095 are reserved for customers.
//

#define MAPMEM_IOCTL_INDEX  0x800


//
// Define our own private IOCTL
//

#define IOCTL_MAPMEM_MAP_USER_PHYSICAL_MEMORY   CTL_CODE(FILE_DEVICE_MAPMEM , \
                                                         MAPMEM_IOCTL_INDEX,  \
                                                         METHOD_BUFFERED,     \
                                                         FILE_ANY_ACCESS)

#define IOCTL_MAPMEM_UNMAP_USER_PHYSICAL_MEMORY CTL_CODE(FILE_DEVICE_MAPMEM,  \
                                                         MAPMEM_IOCTL_INDEX+1,\
                                                         METHOD_BUFFERED,     \
                                                         FILE_ANY_ACCESS)




//
// Our user mode app will pass an initialized structure like this
//     down to the kernel mode driver
//
typedef enum _INTERFACE_TYPE
{
  Internal,
  Isa,
  Eisa,
  MicroChannel,
  TurboChannel,
  MaximumInterfaceType
}
INTERFACE_TYPE, *PINTERFACE_TYPE;


typedef struct
{
  INTERFACE_TYPE InterfaceType; // Isa, Eisa, etc....
  ULONG BusNumber;              // Bus number
  LARGE_INTEGER BusAddress;     // Bus-relative address
  ULONG AddressSpace;           // 0 is memory, 1 is I/O
  ULONG Length;                 // Length of section to map

}
PHYSICAL_MEMORY_INFO, *PPHYSICAL_MEMORY_INFO;


#endif

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