#ifndef EXEC_IO_H
#define EXEC_IO_H
/*
**      $VER: io.h 39.0 (15.10.1991)
**      Includes Release 44.1
**
**      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 */