#ifndef EXEC_IO_H
#define EXEC_IO_H
/*
**      $Filename: exec/io.h $
**      $Release: 2.04 Includes, V37.4 $
**      $Revision: 36.4 $
**      $Date: 90/05/10 $
**
**      Message structures used for device communication
**
**      (C) Copyright 1985-1999 Amiga, Inc.
**          All Rights Reserved
*/

#ifndef EXEC_PORTS_H
#include "exec/ports.h"
#endif /* EXEC_PORTS_H */


struct IORequest {
    struct  Message io_Message;
    struct  Device  *io_Device;     /* device node pointer  */
    struct  Unit    *io_Unit;      /* unit (driver private)*/
    UWORD   io_Command;            /* device command */
    UBYTE   io_Flags;
    BYTE    io_Error;               /* error or warning num */
};

struct IOStdReq {
    struct  Message io_Message;
    struct  Device  *io_Device;     /* device node pointer  */
    struct  Unit    *io_Unit;      /* unit (driver private)*/
    UWORD   io_Command;            /* device command */
    UBYTE   io_Flags;
    BYTE    io_Error;              /* error or warning num */
    ULONG   io_Actual;             /* actual number of bytes transferred */
    ULONG   io_Length;             /* requested number bytes transferred*/
    APTR    io_Data;               /* points to data area */
    ULONG   io_Offset;              /* offset for block structured devices */
};

/* library vector offsets for device reserved vectors */
#define DEV_BEGINIO    (-30)
#define DEV_ABORTIO     (-36)

/* io_Flags defined bits */
#define IOB_QUICK      0
#define IOF_QUICK       (1<<0)


#define CMD_INVALID    0
#define CMD_RESET      1
#define CMD_READ       2
#define CMD_WRITE      3
#define CMD_UPDATE     4
#define CMD_CLEAR      5
#define CMD_STOP       6
#define CMD_START      7
#define CMD_FLUSH       8

#define CMD_NONSTD      9

#endif  /* EXEC_IO_H */