/*
 	File:		Disks.h
 
 	Contains:	Disk Driver Interfaces.
 
 	Version:	Technology:	System 7.5
 				Release:	QuickTime 4.0
 
 	Copyright:	(c) 1985-1991,1993, 1995-1998 by Apple Computer, Inc., all rights reserved
 
 	Bugs?:		For bug reports, consult the following page on
 				the World Wide Web:
 
 					http://developer.apple.com/bugreporter/
 
*/
#ifndef __DISKS__
#define __DISKS__

#ifndef __MACTYPES__
#include <MacTypes.h>
#endif
#ifndef __OSUTILS__
#include <OSUtils.h>
#endif



#if PRAGMA_ONCE
#pragma once
#endif

#ifdef __cplusplus
extern "C" {
#endif

#if PRAGMA_IMPORT
#pragma import on
#endif

#if PRAGMA_STRUCT_ALIGN
	#pragma options align=mac68k
#elif PRAGMA_STRUCT_PACKPUSH
	#pragma pack(push, 2)
#elif PRAGMA_STRUCT_PACK
	#pragma pack(2)
#endif


enum {
	sony						= 0,
	hard20						= 1
};

/* Disk Driver Status csCodes */

enum {
	kReturnFormatList			= 6,							/* .Sony */
	kDriveStatus				= 8,
	kMFMStatus					= 10
};

/* Disk Driver Control csCodes */

enum {
	kVerify						= 5,
	kFormat						= 6,
	kEject						= 7,
	kSetTagBuffer				= 8,							/* .Sony */
	kTrackCache					= 9,							/* .Sony */
	kDriveIcon					= 21,
	kMediaIcon					= 22,
	kDriveInfo					= 23,
	kRawTrack					= 18244							/* .Sony: "diagnostic" raw track dump */
};

/*
	Note:

	qLink is usually the first field in queues, but back in the MacPlus
	days, the DrvSts record needed to be expanded.  In order to do this without
	breaking disk drivers that already added stuff to the end, the fields
	where added to the beginning.  This was originally done in assembly language
	and the record was defined to start at a negative offset, so that the qLink
	field would end up at offset zero.  When the C and pascal interfaces where
	made, they could not support negative record offsets, so qLink was no longer
	the first field.  Universal Interfaces are auto generated and don't support
	negative offsets for any language, so DrvSts in Disks.a has qLinks at a
	none zero offset.  Assembly code which switches to Universal Interfaces will
	need to compensate for that.

*/


struct DrvSts {
	short 							track;						/* current track */
	char 							writeProt;					/* bit 7 = 1 if volume is locked */
	char 							diskInPlace;				/* disk in drive */
	char 							installed;					/* drive installed */
	char 							sides;						/* -1 for 2-sided, 0 for 1-sided */
	QElemPtr 						qLink;						/* next queue entry */
	short 							qType;						/* 1 for HD20 */
	short 							dQDrive;					/* drive number */
	short 							dQRefNum;					/* driver reference number */
	short 							dQFSID;						/* file system ID */
	char 							twoSideFmt;					/* after 1st rd/wrt: 0=1 side, -1=2 side */
	char 							needsFlush;					/* -1 for MacPlus drive */
	short 							diskErrs;					/* soft error count */
};
typedef struct DrvSts					DrvSts;

struct DrvSts2 {
	short 							track;
	char 							writeProt;
	char 							diskInPlace;
	char 							installed;
	char 							sides;
	QElemPtr 						qLink;
	short 							qType;
	short 							dQDrive;
	short 							dQRefNum;
	short 							dQFSID;
	short 							driveSize;
	short 							driveS1;
	short 							driveType;
	short 							driveManf;
	short 							driveChar;
	char 							driveMisc;
};
typedef struct DrvSts2					DrvSts2;

enum {
	kdqManualEjectBit			= 5
};

EXTERN_API( OSErr )
DiskEject						(short 					drvNum);

EXTERN_API( OSErr )
SetTagBuffer					(void *					buffPtr);

EXTERN_API( OSErr )
DriveStatus						(short 					drvNum,
								 DrvSts *				status);



#if PRAGMA_STRUCT_ALIGN
	#pragma options align=reset
#elif PRAGMA_STRUCT_PACKPUSH
	#pragma pack(pop)
#elif PRAGMA_STRUCT_PACK
	#pragma pack()
#endif

#ifdef PRAGMA_IMPORT_OFF
#pragma import off
#elif PRAGMA_IMPORT
#pragma import reset
#endif

#ifdef __cplusplus
}
#endif

#endif /* __DISKS__ */