#ifndef	EXEC_IO_H
#define	EXEC_IO_H
/*
**	$Id: io.h,v 39.0 91/10/15 08:27:06 mks Exp $
**
**	Message structures used for device communication
**
**	(C) Copyright 1985,1986,1987,1988 Commodore-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 */
