1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/* $OpenBSD: vm_param.h,v 1.7 1996/10/23 15:38:38 deraadt Exp $ */
/* $NetBSD: vm_param.h,v 1.12 1995/03/26 20:39:16 jtc Exp $ */
/*
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* The Mach Operating System project at Carnegie-Mellon University.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)vm_param.h 8.1 (Berkeley) 6/11/93
*
*
* Copyright (c) 1987, 1990 Carnegie-Mellon University.
* All rights reserved.
*
* Authors: Avadis Tevanian, Jr., Michael Wayne Young
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/*
* Machine independent virtual memory parameters.
*/
#ifndef _VM_PARAM_
#define _VM_PARAM_
#include <machine/vmparam.h>
/*
* This belongs in types.h, but breaks too many existing programs.
*/
typedef int boolean_t;
#define TRUE 1
#define FALSE 0
/*
* The machine independent pages are refered to as PAGES. A page
* is some number of hardware pages, depending on the target machine.
*/
#define DEFAULT_PAGE_SIZE 4096
/*
* All references to the size of a page should be done with PAGE_SIZE
* or PAGE_SHIFT. The fact they are variables is hidden here so that
* we can easily make them constant if we so desire.
*/
#define PAGE_SIZE cnt.v_page_size /* size of page */
#define PAGE_MASK page_mask /* size of page - 1 */
#define PAGE_SHIFT page_shift /* bits to shift for pages */
#ifdef _KERNEL
extern vm_size_t page_mask;
extern int page_shift;
#endif
/*
* CTL_VM identifiers
*/
#define VM_METER 1 /* struct vmmeter */
#define VM_LOADAVG 2 /* struct loadavg */
#define VM_PSSTRINGS 3 /* PSSTRINGS */
#define VM_MAXID 4 /* number of valid vm ids */
#define CTL_VM_NAMES { \
{ 0, 0 }, \
{ "vmmeter", CTLTYPE_STRUCT }, \
{ "loadavg", CTLTYPE_STRUCT }, \
{ "psstrings", CTLTYPE_STRUCT }, \
}
struct _ps_strings {
void *val;
};
/*
* Return values from the VM routines.
*/
#define KERN_SUCCESS 0
#define KERN_INVALID_ADDRESS 1
#define KERN_PROTECTION_FAILURE 2
#define KERN_NO_SPACE 3
#define KERN_INVALID_ARGUMENT 4
#define KERN_FAILURE 5
#define KERN_RESOURCE_SHORTAGE 6
#define KERN_NOT_RECEIVER 7
#define KERN_NO_ACCESS 8
#ifndef ASSEMBLER
/*
* Convert addresses to pages and vice versa.
* No rounding is used.
*/
#ifdef _KERNEL
#define atop(x) (((unsigned long)(x)) >> PAGE_SHIFT)
#define ptoa(x) ((vm_offset_t)((x) << PAGE_SHIFT))
/*
* Round off or truncate to the nearest page. These will work
* for either addresses or counts (i.e., 1 byte rounds to 1 page).
*/
#define round_page(x) \
((vm_offset_t)((((vm_offset_t)(x)) + PAGE_MASK) & ~PAGE_MASK))
#define trunc_page(x) \
((vm_offset_t)(((vm_offset_t)(x)) & ~PAGE_MASK))
#define num_pages(x) \
((vm_offset_t)((((vm_offset_t)(x)) + PAGE_MASK) >> PAGE_SHIFT))
extern vm_size_t mem_size; /* size of physical memory (bytes) */
extern vm_offset_t first_addr; /* first physical page */
extern vm_offset_t last_addr; /* last physical page */
#else
/* out-of-kernel versions of round_page and trunc_page */
#define round_page(x) \
((((vm_offset_t)(x) + (vm_page_size - 1)) / vm_page_size) * \
vm_page_size)
#define trunc_page(x) \
((((vm_offset_t)(x)) / vm_page_size) * vm_page_size)
#endif /* _KERNEL */
#endif /* ASSEMBLER */
#endif /* _VM_PARAM_ */
|
