#ifndef RESOURCES_DISK_H
#define RESOURCES_DISK_H
/*
**      $Filename: resources/disk.h $
**      $Release: 2.04 Includes, V37.4 $
**      $Revision: 27.11 $
**      $Date: 90/11/21 $
**
**      disk.h -- external declarations for the disk resource
**
**      (C) Copyright 1985-1999 Amiga, Inc.
**          All Rights Reserved
*/

#ifndef EXEC_TYPES_H
#include "exec/types.h"
#endif

#ifndef EXEC_LISTS_H
#include "exec/lists.h"
#endif

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

#ifndef EXEC_INTERRUPTS_H
#include "exec/interrupts.h"
#endif

#ifndef EXEC_LIBRARIES_H
#include "exec/libraries.h"
#endif


/********************************************************************
*
* Resource structures
*
********************************************************************/


struct DiscResourceUnit {
    struct Message dru_Message;
    struct Interrupt dru_DiscBlock;
    struct Interrupt dru_DiscSync;
    struct Interrupt dru_Index;
};

struct DiscResource {
    struct Library             dr_Library;
    struct DiscResourceUnit    *dr_Current;
    UBYTE                      dr_Flags;
    UBYTE                      dr_pad;
    struct Library             *dr_SysLib;
    struct Library             *dr_CiaResource;
    ULONG                      dr_UnitID[4];
    struct List                dr_Waiting;
    struct Interrupt           dr_DiscBlock;
    struct Interrupt           dr_DiscSync;
    struct Interrupt           dr_Index;
    struct Task                 *dr_CurrTask;
};

/* dr_Flags entries */
#define DRB_ALLOC0     0       /* unit zero is allocated */
#define DRB_ALLOC1     1       /* unit one is allocated */
#define DRB_ALLOC2     2       /* unit two is allocated */
#define DRB_ALLOC3     3       /* unit three is allocated */
#define DRB_ACTIVE      7       /* is the disc currently busy? */

#define DRF_ALLOC0     (1<<0)        /* unit zero is allocated */
#define DRF_ALLOC1     (1<<1)        /* unit one is allocated */
#define DRF_ALLOC2     (1<<2)        /* unit two is allocated */
#define DRF_ALLOC3     (1<<3)        /* unit three is allocated */
#define DRF_ACTIVE      (1<<7)        /* is the disc currently busy? */



/********************************************************************
*
* Hardware Magic
*
********************************************************************/


#define DSKDMAOFF       0x4000  /* idle command for dsklen register */


/********************************************************************
*
* Resource specific commands
*
********************************************************************/

/*
 * DISKNAME is a generic macro to get the name of the resource.
 * This way if the name is ever changed you will pick up the
 *  change automatically.
 */

#define DISKNAME        "disk.resource"


#define       DR_ALLOCUNIT    (LIB_BASE - 0*LIB_VECTSIZE)
#define       DR_FREEUNIT     (LIB_BASE - 1*LIB_VECTSIZE)
#define       DR_GETUNIT      (LIB_BASE - 2*LIB_VECTSIZE)
#define       DR_GIVEUNIT     (LIB_BASE - 3*LIB_VECTSIZE)
#define       DR_GETUNITID    (LIB_BASE - 4*LIB_VECTSIZE)
#define DR_READUNITID   (LIB_BASE - 5*LIB_VECTSIZE)

#define DR_LASTCOMM     (DR_READUNITID)

/********************************************************************
*
* drive types
*
********************************************************************/

#define       DRT_AMIGA       (0x00000000)
#define       DRT_37422D2S    (0x55555555)
#define DRT_EMPTY     (0xFFFFFFFF)
#define DRT_150RPM      (0xAAAAAAAA)

#endif /* RESOURCES_DISK_H */