xref: /titanic_50/usr/src/uts/common/sys/mkdev.h (revision f38cb554a534c6df738be3f4d23327e69888e634)
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  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
27 /*	  All Rights Reserved  	*/
28 
29 #ifndef _SYS_MKDEV_H
30 #define	_SYS_MKDEV_H
31 
32 #include <sys/types.h>
33 
34 #ifdef	__cplusplus
35 extern "C" {
36 #endif
37 
38 /*
39  * SVR3/Pre-EFT device number constants.
40  */
41 #define	ONBITSMAJOR	7	/* # of SVR3 major device bits */
42 #define	ONBITSMINOR	8	/* # of SVR3 minor device bits */
43 #define	OMAXMAJ		0x7f	/* SVR3 max major value */
44 #define	OMAXMIN		0xff	/* SVR3 max major value */
45 
46 /*
47  * 32-bit Solaris device major/minor sizes.
48  */
49 #define	NBITSMAJOR32	14
50 #define	NBITSMINOR32	18
51 #define	MAXMAJ32	0x3ffful	/* SVR4 max major value */
52 #define	MAXMIN32	0x3fffful	/* SVR4 max minor value */
53 
54 #define	NBITSMAJOR64	32	/* # of major device bits in 64-bit Solaris */
55 #define	NBITSMINOR64	32	/* # of minor device bits in 64-bit Solaris */
56 
57 #ifdef _LP64
58 
59 #define	MAXMAJ64	0xfffffffful	/* max major value */
60 #define	MAXMIN64	0xfffffffful	/* max minor value */
61 
62 #define	NBITSMAJOR	NBITSMAJOR64
63 #define	NBITSMINOR	NBITSMINOR64
64 #define	MAXMAJ		MAXMAJ64
65 #define	MAXMIN		MAXMIN64
66 
67 #else /* !_LP64 */
68 
69 #define	NBITSMAJOR	NBITSMAJOR32
70 #define	NBITSMINOR	NBITSMINOR32
71 #define	MAXMAJ		MAXMAJ32
72 #define	MAXMIN		MAXMIN32
73 
74 #endif /* !_LP64 */
75 
76 #if !defined(_KERNEL)
77 
78 /*
79  * Undefine sysmacros.h device macros.
80  */
81 #undef makedev
82 #undef major
83 #undef minor
84 
85 #if defined(__STDC__)
86 
87 extern dev_t makedev(const major_t, const minor_t);
88 extern major_t major(const dev_t);
89 extern minor_t minor(const dev_t);
90 extern dev_t __makedev(const int, const major_t, const minor_t);
91 extern major_t __major(const int, const dev_t);
92 extern minor_t __minor(const int, const dev_t);
93 
94 #else
95 
96 extern dev_t makedev();
97 extern major_t major();
98 extern minor_t minor();
99 extern dev_t __makedev();
100 extern major_t __major();
101 extern minor_t __minor();
102 
103 #endif	/* defined(__STDC__) */
104 
105 #define	OLDDEV 0	/* old device format */
106 #define	NEWDEV 1	/* new device format */
107 
108 #define	makedev(maj, min)	(__makedev(NEWDEV, maj, min))
109 #define	major(dev)		(__major(NEWDEV, dev))
110 #define	minor(dev)		(__minor(NEWDEV, dev))
111 
112 #endif	/* !defined(_KERNEL) */
113 
114 #ifdef	__cplusplus
115 }
116 #endif
117 
118 #endif	/* _SYS_MKDEV_H */
119