vmparam.h revision 1.31 
1/*	$NetBSD: vmparam.h,v 1.31 2002/09/03 16:24:35 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 * USRTEXT is the start of the user text/data space, while USRSTACK
58 * is the top (end) of the user stack.
59 */
60#define	USRTEXT		0x2000			/* Start of user text */
61#define	USRSTACK	KERNBASE		/* Start of user stack */
62
63/*
64 * Virtual memory related constants, all in bytes
65 */
66#ifndef MAXTSIZ
67#define	MAXTSIZ		(64*1024*1024)		/* max text size */
68#endif
69#ifndef DFLDSIZ
70#define	DFLDSIZ		(64*1024*1024)		/* initial data size limit */
71#endif
72#ifndef MAXDSIZ
73#define	MAXDSIZ		(256*1024*1024)		/* max data size */
74#endif
75#ifndef	DFLSSIZ
76#define	DFLSSIZ		(2*1024*1024)		/* initial stack size limit */
77#endif
78#ifndef	MAXSSIZ
79#define	MAXSSIZ		MAXDSIZ			/* max stack size */
80#endif
81
82/*
83 * Size of shared memory map
84 */
85#ifndef SHMMAXPGS
86#define SHMMAXPGS	1024
87#endif
88
89/*
90 * Mach derived constants
91 */
92
93/*
94 * User/kernel map constants.  Note that sparc/vaddrs.h defines the
95 * IO space virtual base, which must be the same as VM_MAX_KERNEL_ADDRESS:
96 * tread with care.
97 */
98#define VM_MIN_ADDRESS		((vaddr_t)0)
99#define VM_MAX_ADDRESS		((vaddr_t)KERNBASE)
100#define VM_MAXUSER_ADDRESS	((vaddr_t)KERNBASE)
101#define VM_MIN_KERNEL_ADDRESS	((vaddr_t)KERNBASE)
102#define VM_MAX_KERNEL_ADDRESS   ((vaddr_t)KERNEND)
103
104#define VM_PHYSSEG_MAX		32       /* up to 32 segments */
105#define VM_PHYSSEG_STRAT	VM_PSTRAT_BSEARCH
106#define VM_PHYSSEG_NOADD		/* can't add RAM after vm_mem_init */
107
108#define	VM_NFREELIST		1
109#define	VM_FREELIST_DEFAULT	0
110
111#if !defined(_LKM)
112/*
113 * Make the VM PAGE_* macros constants, if possible.
114 */
115#if NBPG == 4096 || NBPG == 8192
116#define PAGE_SIZE	NBPG
117#define PAGE_SHIFT	PGSHIFT
118#define PAGE_MASK	(NBPG-1)
119#endif
120#endif /* _LKM */
121
122#define	__HAVE_PMAP_PHYSSEG
123
124/*
125 * pmap specific data stored in the vm_physmem[] array
126 */
127struct pvlist;
128struct pmap_physseg {
129	struct pvlist *pvhead;
130};
131#endif /* _SPARC_VMPARAM_H_ */
132