vmparam.h revision 1.32 
1/*	$NetBSD: vmparam.h,v 1.32 2002/12/10 05:14:33 thorpej Exp $ */
2
3/*
4 * Copyright (c) 1992, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This software was developed by the Computer Systems Engineering group
8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
9 * contributed to Berkeley.
10 *
11 * All advertising materials mentioning features or use of this software
12 * must display the following acknowledgement:
13 *	This product includes software developed by the University of
14 *	California, Lawrence Berkeley Laboratory.
15 *
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
18 * are met:
19 * 1. Redistributions of source code must retain the above copyright
20 *    notice, this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 *    notice, this list of conditions and the following disclaimer in the
23 *    documentation and/or other materials provided with the distribution.
24 * 3. All advertising materials mentioning features or use of this software
25 *    must display the following acknowledgement:
26 *	This product includes software developed by the University of
27 *	California, Berkeley and its contributors.
28 * 4. Neither the name of the University nor the names of its contributors
29 *    may be used to endorse or promote products derived from this software
30 *    without specific prior written permission.
31 *
32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
35 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
42 * SUCH DAMAGE.
43 *
44 *	@(#)vmparam.h	8.1 (Berkeley) 6/11/93
45 */
46
47#ifndef _SPARC_VMPARAM_H_
48#define _SPARC_VMPARAM_H_
49
50/*
51 * Machine dependent constants for Sun-4c SPARC
52 */
53
54#include <machine/param.h>
55
56/*
57 * USRSTACK is the top (end) of the user stack.
58 */
59#define	USRSTACK	KERNBASE		/* Start of user stack */
60
61/*
62 * Virtual memory related constants, all in bytes
63 */
64#ifndef MAXTSIZ
65#define	MAXTSIZ		(64*1024*1024)		/* max text size */
66#endif
67#ifndef DFLDSIZ
68#define	DFLDSIZ		(64*1024*1024)		/* initial data size limit */
69#endif
70#ifndef MAXDSIZ
71#define	MAXDSIZ		(256*1024*1024)		/* max data size */
72#endif
73#ifndef	DFLSSIZ
74#define	DFLSSIZ		(2*1024*1024)		/* initial stack size limit */
75#endif
76#ifndef	MAXSSIZ
77#define	MAXSSIZ		MAXDSIZ			/* max stack size */
78#endif
79
80/*
81 * Size of shared memory map
82 */
83#ifndef SHMMAXPGS
84#define SHMMAXPGS	1024
85#endif
86
87/*
88 * Mach derived constants
89 */
90
91/*
92 * User/kernel map constants.  Note that sparc/vaddrs.h defines the
93 * IO space virtual base, which must be the same as VM_MAX_KERNEL_ADDRESS:
94 * tread with care.
95 */
96#define VM_MIN_ADDRESS		((vaddr_t)0)
97#define VM_MAX_ADDRESS		((vaddr_t)KERNBASE)
98#define VM_MAXUSER_ADDRESS	((vaddr_t)KERNBASE)
99#define VM_MIN_KERNEL_ADDRESS	((vaddr_t)KERNBASE)
100#define VM_MAX_KERNEL_ADDRESS   ((vaddr_t)KERNEND)
101
102#define VM_PHYSSEG_MAX		32       /* up to 32 segments */
103#define VM_PHYSSEG_STRAT	VM_PSTRAT_BSEARCH
104#define VM_PHYSSEG_NOADD		/* can't add RAM after vm_mem_init */
105
106#define	VM_NFREELIST		1
107#define	VM_FREELIST_DEFAULT	0
108
109#if !defined(_LKM)
110/*
111 * Make the VM PAGE_* macros constants, if possible.
112 */
113#if NBPG == 4096 || NBPG == 8192
114#define PAGE_SIZE	NBPG
115#define PAGE_SHIFT	PGSHIFT
116#define PAGE_MASK	(NBPG-1)
117#endif
118#endif /* _LKM */
119
120#define	__HAVE_PMAP_PHYSSEG
121
122/*
123 * pmap specific data stored in the vm_physmem[] array
124 */
125struct pvlist;
126struct pmap_physseg {
127	struct pvlist *pvhead;
128};
129#endif /* _SPARC_VMPARAM_H_ */
130