xref: /illumos-gate/usr/src/cmd/format/param.h (revision 342440ec)
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 (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef	_PARAM_H
28 #define	_PARAM_H
29 
30 #ifdef	__cplusplus
31 extern "C" {
32 #endif
33 
34 #ifndef UINT16_MAX
35 #define	UINT16_MAX	0xffffU
36 #endif
37 
38 #ifndef UINT32_MAX
39 #define	UINT32_MAX	0xffffffffU
40 #endif
41 
42 #ifndef INT32_MAX
43 #define	INT32_MAX	0x7fffffff
44 #endif
45 
46 /*
47  * This file contains declarations of miscellaneous parameters.
48  */
49 #ifndef	SECSIZE
50 #define	SECSIZE		DEV_BSIZE
51 #endif
52 
53 #define	MAX_CYLS	(0x10000 - 1)		/* max legal cylinder count */
54 #define	MAX_HEADS	(0x10000 - 1)		/* max legal head count */
55 #define	MAX_SECTS	(0x10000 - 1)		/* max legal sector count */
56 
57 #define	MIN_RPM		2000			/* min legal rpm */
58 #define	AVG_RPM		3600			/* default rpm */
59 #define	MAX_RPM		76000			/* max legal rpm */
60 
61 #define	MIN_BPS		512			/* min legal bytes/sector */
62 #define	AVG_BPS		600			/* default bytes/sector */
63 #define	MAX_BPS		1000			/* max legal bytes/sector */
64 
65 #define	INFINITY	0xffffffffU		/* a big number */
66 
67 #define	MAXBLKS(heads, spt)	UINT16_MAX * heads * spt, heads, spt
68 #ifdef	__cplusplus
69 }
70 #endif
71 
72 #endif	/* _PARAM_H */
73