summaryrefslogtreecommitdiff
path: root/sys/arch/sparc64/include/vmparam.h
blob: 85b208959c2a47ec8a1c1f3256962fa305f30217 (plain)
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
170
171
172
173
174
175
176
177
/*	$NetBSD: vmparam.h,v 1.33 2013/01/03 09:40:55 martin Exp $ */

/*
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This software was developed by the Computer Systems Engineering group
 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
 * contributed to Berkeley.
 *
 * 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, Lawrence Berkeley Laboratory.
 *
 * 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. 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	8.1 (Berkeley) 6/11/93
 */

/*
 * Machine dependent constants for Sun-4c SPARC
 */

#ifndef VMPARAM_H
#define VMPARAM_H

/*
 * We use 8K VM pages on the Sun4U.  Override the PAGE_* definitions
 * to be compile-time constants.
 */
#define	PAGE_SHIFT	13
#define	PAGE_SIZE	(1 << PAGE_SHIFT)
#define	PAGE_MASK	(PAGE_SIZE - 1)

/*
 * The kernel itself is mapped by the boot loader with 4Mb locked VM pages,
 * so let's keep 4Mb definitions here as well.
 */
#define PAGE_SHIFT_4M	22
#define PAGE_SIZE_4M	(1UL<<PAGE_SHIFT_4M)
#define PAGE_MASK_4M	(PAGE_SIZE_4M-1)

/*
 * USRSTACK is the top (end) of the user stack.
 */
#define USRSTACK32	0xffffe000L
#ifdef __arch64__
#define USRSTACK	0xffffffffffffe000L
#else
#define USRSTACK	USRSTACK32
#endif

/*
 * Virtual memory related constants, all in bytes
 */
/* #ifdef __arch64__ */
#if 0
/*
 * 64-bit limits:
 *
 * Since the compiler generates `call' instructions we can't
 * have more than 4GB in a single text segment.
 *
 * And since we only have a 40-bit adderss space, allow half
 * of that for data and the other half for stack.
 */
#ifndef MAXTSIZ
#define	MAXTSIZ		(4L*1024*1024*1024)	/* max text size */
#endif
#ifndef DFLDSIZ
#define	DFLDSIZ		(128L*1024*1024)	/* initial data size limit */
#endif
#ifndef MAXDSIZ
#define	MAXDSIZ		(1L<<39)		/* max data size */
#endif
#ifndef	DFLSSIZ
#define	DFLSSIZ		(2*1024*1024)		/* initial stack size limit */
#endif
#ifndef	MAXSSIZ
#define	MAXSSIZ		MAXDSIZ			/* max stack size */
#endif
#else
/*
 * 32-bit limits:
 *
 * We only have 4GB to play with.  Limit stack, data, and text
 * each to half of that.
 *
 * This is silly.  Apparently if we go above these numbers
 * integer overflows in other parts of the kernel cause hangs.
 */
#ifndef MAXTSIZ
#define	MAXTSIZ		(1*1024*1024*1024)	/* max text size */
#endif
#ifndef DFLDSIZ
#define	DFLDSIZ		(128*1024*1024)		/* initial data size limit */
#endif
#ifndef MAXDSIZ
#define	MAXDSIZ		(1*1024*1024*1024)	/* max data size */
#endif
#ifndef	DFLSSIZ
#define	DFLSSIZ		(2*1024*1024)		/* initial stack size limit */
#endif
#ifndef	MAXSSIZ
#define	MAXSSIZ		(8*1024*1024)			/* max stack size */
#endif
#endif

/*
 * 32-bit emulation limits.
 */
#ifndef MAXTSIZ32
#define	MAXTSIZ32	(1*1024*1024*1024)	/* max text size */
#endif
#ifndef DFLDSIZ32
#define	DFLDSIZ32	(128*1024*1024)		/* initial data size limit */
#endif
#ifndef MAXDSIZ32
#define	MAXDSIZ32	(1*1024*1024*1024)	/* max data size */
#endif
#ifndef	DFLSSIZ32
#define	DFLSSIZ32	(2*1024*1024)		/* initial stack size limit */
#endif
#ifndef	MAXSSIZ32
#define	MAXSSIZ32	(8*1024*1024)			/* max stack size */
#endif

/*
 * Mach derived constants
 */

/*
 * User/kernel map constants.
 */
#define VM_MIN_ADDRESS		((vaddr_t)0)
#define VM_MAX_ADDRESS		((vaddr_t)-1)
#define VM_MAXUSER_ADDRESS	((vaddr_t)-1)
#define VM_MAXUSER_ADDRESS32	((vaddr_t)(0x00000000ffffffffL&~PGOFSET))

#define VM_MIN_KERNEL_ADDRESS	((vaddr_t)KERNBASE)
#ifdef __arch64__
#define	VM_KERNEL_MEM_VA_START	((vaddr_t)0x100000000UL)
#define VM_MAX_KERNEL_ADDRESS	((vaddr_t)0x000007ffffffffffUL)
#else
#define VM_MAX_KERNEL_ADDRESS	((vaddr_t)KERNEND)
#endif

#define VM_PHYSSEG_MAX          32       /* up to 32 segments */
#define VM_PHYSSEG_STRAT        VM_PSTRAT_BSEARCH

#define	VM_NFREELIST		1
#define	VM_FREELIST_DEFAULT	0

#endif