reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/himem.h

   1 /*
   2  * COPYRIGHT:       GPLv2+ - See COPYING in the top level directory
   3  * PROJECT:         ReactOS Virtual DOS Machine
   4  * FILE:            himem.h
   5  * PURPOSE:         DOS XMS Driver
   6  * PROGRAMMERS:     Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
   7  */
   8
   9 /* DEFINITIONS ****************************************************************/
  10
  11 #define XMS_ADDRESS     0x110000
  12 #define XMS_BLOCKS      0x37C0
  13 #define XMS_BLOCK_SIZE  1024
  14 #define XMS_MAX_HANDLES 16
  15
  16 #define XMS_STATUS_SUCCESS         0x00
  17 #define XMS_STATUS_NOT_IMPLEMENTED 0x80
  18 #define XMS_STATUS_A20_ERROR       0x82
  19 #define XMS_STATUS_HMA_IN_USE      0x91
  20 #define XMS_STATUS_OUT_OF_MEMORY   0xA0
  21 #define XMS_STATUS_OUT_OF_HANDLES  0xA1
  22 #define XMS_STATUS_INVALID_HANDLE  0xA2
  23 #define XMS_STATUS_BAD_SRC_HANDLE  0xA3
  24 #define XMS_STATUS_BAD_DEST_HANDLE 0xA4
  25 #define XMS_STATUS_BAD_SRC_OFFSET  0xA5
  26 #define XMS_STATUS_BAD_DEST_OFFSET 0xA6
  27 #define XMS_STATUS_NOT_LOCKED      0xAA
  28 #define XMS_STATUS_LOCKED          0xAB
  29 #define XMS_STATUS_LOCK_OVERFLOW   0xAC
  30 #define XMS_STATUS_CANNOT_LOCK     0xAD
  31
  32 typedef struct _XMS_HANDLE
  33 {
  34     BYTE Handle;
  35     BYTE LockCount;
  36     WORD Size;
  37     DWORD Address;
  38 } XMS_HANDLE, *PXMS_HANDLE;
  39
  40 #pragma pack(push, 1)
  41 typedef struct _XMS_COPY_DATA
  42 {
  43     DWORD Count;
  44     WORD SourceHandle;
  45     DWORD SourceOffset;
  46     WORD DestHandle;
  47     DWORD DestOffset;
  48 } XMS_COPY_DATA, *PXMS_COPY_DATA;
  49 #pragma pack(pop)
  50
  51 /* FUNCTIONS ******************************************************************/
  52
  53 BOOLEAN XmsGetDriverEntry(PDWORD Pointer);
  54 VOID XmsInitialize(VOID);
  55 VOID XmsCleanup(VOID);