www.pudn.com > 17551_portion.rar > WinIo_NT.h

#ifndef WINIONT_H 
#define WINIONT_H 
 
// 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_WINIO 0x00008010 
 
// 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 WINIO_IOCTL_INDEX 0x810 
 
// Define our own private IOCTL 
 
#define IOCTL_WINIO_MAPPHYSTOLIN     CTL_CODE(FILE_DEVICE_WINIO,  \ 
                                     WINIO_IOCTL_INDEX,      \ 
                                     METHOD_BUFFERED,        \ 
                                     FILE_ANY_ACCESS) 
 
#define IOCTL_WINIO_UNMAPPHYSADDR    CTL_CODE(FILE_DEVICE_WINIO,  \ 
                                     WINIO_IOCTL_INDEX + 1,  \ 
                                     METHOD_BUFFERED,        \ 
                                     FILE_ANY_ACCESS) 
 
#define IOCTL_WINIO_ENABLEDIRECTIO   CTL_CODE(FILE_DEVICE_WINIO,  \ 
                                     WINIO_IOCTL_INDEX + 2,   \ 
                                     METHOD_BUFFERED,         \ 
                                     FILE_ANY_ACCESS) 
 
#define IOCTL_WINIO_DISABLEDIRECTIO  CTL_CODE(FILE_DEVICE_WINIO,  \ 
                                     WINIO_IOCTL_INDEX + 3,   \ 
                                     METHOD_BUFFERED,         \ 
                                     FILE_ANY_ACCESS) 
 
#pragma pack(1) 
 
struct tagPhys32Struct 
{ 
  HANDLE PhysicalMemoryHandle; 
  ULONG dwPhysMemSizeInBytes; 
  PVOID pvPhysAddress; 
  PVOID pvPhysMemLin; 
}; 
 
extern struct tagPhys32Struct Phys32Struct; 
 
#endif