1/* $OpenBSD: uvm_param.h,v 1.18 2015/02/07 08:21:24 miod Exp $ */
2/* $NetBSD: uvm_param.h,v 1.5 2001/03/09 01:02:12 chs Exp $ */
3
4/*
5 * Copyright (c) 1991, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * The Mach Operating System project at Carnegie-Mellon University.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * @(#)vm_param.h 8.2 (Berkeley) 1/9/95
36 *
37 *
38 * Copyright (c) 1987, 1990 Carnegie-Mellon University.
39 * All rights reserved.
40 *
41 * Authors: Avadis Tevanian, Jr., Michael Wayne Young
42 *
43 * Permission to use, copy, modify and distribute this software and
44 * its documentation is hereby granted, provided that both the copyright
45 * notice and this permission notice appear in all copies of the
46 * software, derivative works or modified versions, and any portions
47 * thereof, and that both notices appear in supporting documentation.
48 *
49 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
50 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
51 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
52 *
53 * Carnegie Mellon requests users of this software to return to
54 *
55 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
56 * School of Computer Science
57 * Carnegie Mellon University
58 * Pittsburgh PA 15213-3890
59 *
60 * any improvements or extensions that they make and grant Carnegie the
61 * rights to redistribute these changes.
62 */
63
64/*
65 * Machine independent virtual memory parameters.
66 */
67
68#ifndef _VM_PARAM_
69#define _VM_PARAM_
70
71#ifdef _KERNEL
72
73#include <machine/vmparam.h>
74
75typedef int boolean_t;
76#define TRUE 1
77#define FALSE 0
78
79#define DEFAULT_PAGE_SIZE 4096
80
81#define atop(x) ((x) >> PAGE_SHIFT)
82#define ptoa(x) ((paddr_t)(x) << PAGE_SHIFT)
83#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK)
84#define trunc_page(x) ((x) & ~PAGE_MASK)
85
86#if !defined(VM_KERNEL_SPACE_SIZE)
87#define VM_KERNEL_SPACE_SIZE (VM_MAX_KERNEL_ADDRESS - VM_MIN_KERNEL_ADDRESS)
88#endif
89
90#endif /* _KERNEL */
91#endif /* _VM_PARAM_ */