SCSICmds_REPORT_LUNS_Definitions.h   [plain text]


/*
 * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */

#ifndef _IOKIT_SCSI_CMDS_REPORT_LUNS_DEFINITIONS_H_
#define _IOKIT_SCSI_CMDS_REPORT_LUNS_DEFINITIONS_H_

#if KERNEL
#include <IOKit/IOTypes.h>
#else
#include <CoreFoundation/CoreFoundation.h>
#endif


// This file contains all the definitions for the data returned from
// the REPORT_LUNS (0xA0) command.


#if 0
#pragma mark -
#pragma mark  REPORT_LUNS Definitions
#pragma mark -
#endif

typedef struct SCSICmd_REPORT_LUNS_LUN_ENTRY
{
	UInt16		FIRST_LEVEL_ADDRESSING;
	UInt16		SECOND_LEVEL_ADDRESSING;
	UInt16		THIRD_LEVEL_ADDRESSING;
	UInt16		FOURTH_LEVEL_ADDRESSING;
} SCSICmd_REPORT_LUNS_LUN_ENTRY;


#define kREPORT_LUNS_HeaderSize		8

enum
{
	kREPORT_LUNS_ADDRESS_METHOD_PERIPHERAL_DEVICE	= 0,
	kREPORT_LUNS_ADDRESS_DEVICE_TYPE_SPECIFIC		= 1,
	kREPORT_LUNS_ADDRESS_METHOD_LOGICAL_UNIT 		= 2,
	// Reserved [3]
	kREPORT_LUNS_ADDRESS_METHOD_OFFSET				= 14
};

typedef struct REPORT_LUNS_LOGICAL_UNIT_ADDRESSING
{
#ifdef __LITTLE_ENDIAN__
	UInt16		LUN			: 5;
	UInt16		BUS_NUMBER	: 3;
	UInt16		TARGET		: 6;
	UInt16		reserved2	: 1;
	UInt16		reserved	: 1;
#else /* !__LITTLE_ENDIAN__ */
	UInt16		reserved	: 1;
	UInt16		reserved2	: 1;
	UInt16		TARGET		: 6;
	UInt16		BUS_NUMBER	: 3;
	UInt16		LUN			: 5;
#endif /* !__LITTLE_ENDIAN__ */
} REPORT_LUNS_LOGICAL_UNIT_ADDRESSING;

typedef struct REPORT_LUNS_PERIPHERAL_DEVICE_ADDRESSING
{
#ifdef __LITTLE_ENDIAN__
	UInt16		TARGET_LUN		: 8;
	UInt16		BUS_IDENTIFIER	: 6;
	UInt16		reserved2		: 1;
	UInt16		reserved		: 1;
#else /* !__LITTLE_ENDIAN__ */
	UInt16		reserved		: 1;
	UInt16		reserved2		: 1;
	UInt16		BUS_IDENTIFIER	: 6;
	UInt16		TARGET_LUN		: 8;
#endif /* !__LITTLE_ENDIAN__ */
} REPORT_LUNS_PERIPHERAL_DEVICE_ADDRESSING;


// This structure defines the format of the data that is returned for
// the REPORT_LUNS command.
struct SCSICmd_REPORT_LUNS_Header
{
	UInt32							LUN_LIST_LENGTH;	// LUN list length in bytes.
	UInt32							RESERVED;
	SCSICmd_REPORT_LUNS_LUN_ENTRY	LUN[1];				// Variable length list. Must have at least LUN 0 if
};														// Target supports REPORT_LUNS command.
typedef struct SCSICmd_REPORT_LUNS_Header SCSICmd_REPORT_LUNS_Header;


#endif	/* _IOKIT_SCSI_CMDS_REPORT_LUNS_DEFINITIONS_H_ */