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
|
/* $OpenBSD: vmparam.h,v 1.15 2001/09/22 18:00:10 miod Exp $ */
/* $NetBSD: vmparam.h,v 1.32 2000/03/07 00:05:59 matt Exp $ */
/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* Slightly modified for the VAX port /IC
*
* 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.
*
* @(#)vmparam.h 5.9 (Berkeley) 5/12/91
*/
#ifndef _VMPARAM_H_
#define _VMPARAM_H_
/*
* Machine dependent constants for VAX.
*/
/*
* USRTEXT is the start of the user text/data space, while USRSTACK
* is the top (end) of the user stack. Immediately above the user stack
* resides kernel.
*
*/
#define USRTEXT NBPG
#define USRSTACK KERNBASE
/*
* Virtual memory related constants, all in bytes
*/
#ifndef MAXTSIZ
#define MAXTSIZ (8*1024*1024) /* max text size */
#endif
#ifndef MAXDSIZ
#define MAXDSIZ (24*1024*1024) /* max data size */
#endif
#ifndef MAXSSIZ
#define MAXSSIZ (8*1024*1024) /* max stack size */
#endif
#ifndef DFLDSIZ
#define DFLDSIZ (16*1024*1024) /* initial data size limit */
#endif
#ifndef DFLSSIZ
#define DFLSSIZ (512*1024) /* initial stack size limit */
#endif
/*
* All mmap()'ed data will be mapped above MAXDSIZ. This means that
* pte space must be allocated for (possible) mmap()'ed data.
* Note: This is just a hint, if we mmap() more than this the page
* table will be expanded. (at the cost of speed).
*/
#define MMAPSPACE (8*1024*1024)
/*
* Size of shared memory map
*/
#ifndef SHMMAXPGS
#define SHMMAXPGS 64 /* XXXX should be 1024 */
#endif
/*
* The time for a process to be blocked before being very swappable.
* This is a number of seconds which the system takes as being a non-trivial
* amount of real time. You probably shouldn't change this;
* it is used in subtle ways (fractions and multiples of it are, that is, like
* half of a ``long time'', almost a long time, etc.)
* It is related to human patience and other factors which don't really
* change over time.
*/
#define MAXSLP 20
#define VM_PHYSSEG_MAX 1
#define VM_PHYSSEG_NOADD
#define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH /* XXX */
#define VM_NFREELIST 1
#define VM_FREELIST_DEFAULT 0
struct pmap_physseg {
int dummy;
};
/* MD round macros */
#define vax_round_page(x) (((vaddr_t)(x) + VAX_PGOFSET) & ~VAX_PGOFSET)
#define vax_trunc_page(x) ((vaddr_t)(x) & ~VAX_PGOFSET)
/* user/kernel map constants */
#define VM_MIN_ADDRESS ((vm_offset_t)0)
#define VM_MAXUSER_ADDRESS ((vm_offset_t)KERNBASE)
#define VM_MAX_ADDRESS ((vm_offset_t)KERNBASE)
#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)KERNBASE)
#define VM_MAX_KERNEL_ADDRESS ((vm_offset_t)(0xC0000000))
#define USRIOSIZE (8 * VAX_NPTEPG) /* 512MB */
#define VM_PHYS_SIZE (USRIOSIZE*VAX_NBPG)
/* virtual sizes (bytes) for various kernel submaps */
#define VM_KMEM_SIZE (NKMEMCLUSTERS*PAGE_SIZE)
#define VM_MBUF_SIZE (NMBCLUSTERS*MCLBYTES)
#endif
|