vm.h revision 89802 
1/*
2 * Copyright (c) 1991, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 *	@(#)vm.h	8.2 (Berkeley) 12/13/93
34 *	@(#)vm_prot.h	8.1 (Berkeley) 6/11/93
35 *	@(#)vm_inherit.h	8.1 (Berkeley) 6/11/93
36 *
37 * Copyright (c) 1987, 1990 Carnegie-Mellon University.
38 * All rights reserved.
39 *
40 * Authors: Avadis Tevanian, Jr., Michael Wayne Young
41 *
42 * Permission to use, copy, modify and distribute this software and
43 * its documentation is hereby granted, provided that both the copyright
44 * notice and this permission notice appear in all copies of the
45 * software, derivative works or modified versions, and any portions
46 * thereof, and that both notices appear in supporting documentation.
47 *
48 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
49 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
50 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
51 *
52 * Carnegie Mellon requests users of this software to return to
53 *
54 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
55 *  School of Computer Science
56 *  Carnegie Mellon University
57 *  Pittsburgh PA 15213-3890
58 *
59 * any improvements or extensions that they make and grant Carnegie the
60 * rights to redistribute these changes.
61 *
62 * $FreeBSD: head/sys/vm/vm.h 89802 2002-01-25 21:33:10Z dwmalone $
63 */
64
65#ifndef VM_H
66#define VM_H
67
68typedef char vm_inherit_t;	/* inheritance codes */
69
70#define	VM_INHERIT_SHARE	((vm_inherit_t) 0)
71#define	VM_INHERIT_COPY		((vm_inherit_t) 1)
72#define	VM_INHERIT_NONE		((vm_inherit_t) 2)
73#define	VM_INHERIT_DEFAULT	VM_INHERIT_COPY
74
75typedef u_char vm_prot_t;	/* protection codes */
76
77#define	VM_PROT_NONE		((vm_prot_t) 0x00)
78#define	VM_PROT_READ		((vm_prot_t) 0x01)
79#define	VM_PROT_WRITE		((vm_prot_t) 0x02)
80#define	VM_PROT_EXECUTE		((vm_prot_t) 0x04)
81#define	VM_PROT_OVERRIDE_WRITE	((vm_prot_t) 0x08)	/* copy-on-write */
82
83#define	VM_PROT_ALL		(VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE)
84#define	VM_PROT_DEFAULT		VM_PROT_ALL
85
86union vm_map_object;
87typedef union vm_map_object vm_map_object_t;
88
89struct vm_map_entry;
90typedef struct vm_map_entry *vm_map_entry_t;
91
92struct vm_map;
93typedef struct vm_map *vm_map_t;
94
95struct vm_object;
96typedef struct vm_object *vm_object_t;
97
98#ifndef _KERNEL
99/*
100 * This is defined in <sys/types.h> for the kernel so that non-vm kernel
101 * sources (mainly Mach-derived ones such as ddb) don't have to include
102 * vm stuff.  Defining it there for applications might break things.
103 * Define it here for "applications" that include vm headers (e.g.,
104 * genassym).
105 */
106typedef int boolean_t;
107
108/*
109 * This is defined in <sys/types.h> for the kernel so that vnode_if.h
110 * doesn't have to include <vm/vm.h>.
111 */
112struct vm_page;
113typedef struct vm_page *vm_page_t;
114#endif
115
116/*
117 * Information passed from the machine-independant VM initialization code
118 * for use by machine-dependant code (mainly for MMU support)
119 */
120struct kva_md_info {
121	vm_offset_t	buffer_sva;
122	vm_offset_t	buffer_eva;
123	vm_offset_t	clean_sva;
124	vm_offset_t	clean_eva;
125	vm_offset_t	pager_sva;
126	vm_offset_t	pager_eva;
127};
128
129extern struct kva_md_info	kmi;
130extern void vm_ksubmap_init(struct kva_md_info *);
131
132#endif				/* VM_H */
133
134