xref: /illumos-gate/usr/src/uts/common/sys/scsi/scsi_params.h (revision 2d6eb4a5e0a47d30189497241345dc5466bb68ab)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef	_SYS_SCSI_SCSI_PARAMS_H
28 #define	_SYS_SCSI_SCSI_PARAMS_H
29 
30 #ifdef	__cplusplus
31 extern "C" {
32 #endif
33 
34 #define	NUM_SENSE_KEYS		16	/* total number of Sense keys */
35 
36 #define	NTAGS			256	/* number of tags per lun */
37 
38 /*
39  * General parallel SCSI parameters
40  */
41 #define	NTARGETS		8	/* total # of targets per SCSI bus */
42 #define	NTARGETS_WIDE		16	/* #targets per wide SCSI bus */
43 #define	NLUNS_PER_TARGET	8	/* number of luns per target */
44 
45 /*
46  * the following defines are useful for setting max LUNs in
47  * nexus/target drivers
48  */
49 #define	SCSI_1LUN_PER_TARGET		1
50 #define	SCSI_8LUN_PER_TARGET		NLUNS_PER_TARGET
51 #define	SCSI_16LUNS_PER_TARGET		16
52 #define	SCSI_32LUNS_PER_TARGET		32
53 
54 #ifdef	__cplusplus
55 }
56 #endif
57 
58 #endif	/* _SYS_SCSI_SCSI_PARAMS_H */
59