vmparam.h revision 1.3 
1/*	$NetBSD: vmparam.h,v 1.3 2001/04/29 22:44:37 thorpej Exp $	*/
2
3/*-
4 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
5 * Copyright (C) 1995, 1996 TooLs GmbH.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by TooLs GmbH.
19 * 4. The name of TooLs GmbH may not be used to endorse or promote products
20 *    derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#ifndef	_MACHINE_VMPARAM_H_
35#define	_MACHINE_VMPARAM_H_
36
37#define	USRTEXT		NBPG
38#define	USRSTACK	VM_MAXUSER_ADDRESS
39
40#ifndef	MAXTSIZ
41#define	MAXTSIZ		(64*1024*1024)		/* max text size */
42#endif
43
44#ifndef	DFLDSIZ
45#define	DFLDSIZ		(128*1024*1024)		/* default data size */
46#endif
47
48#ifndef	MAXDSIZ
49#define	MAXDSIZ		(1*1024*1024*1024)	/* max data size */
50#endif
51
52#ifndef	DFLSSIZ
53#define	DFLSSIZ		(2*1024*1024)		/* default stack size */
54#endif
55
56#ifndef	MAXSSIZ
57#define	MAXSSIZ		(32*1024*1024)		/* max stack size */
58#endif
59
60/*
61 * Size of shared memory map
62 */
63#ifndef	SHMMAXPGS
64#define	SHMMAXPGS	1024
65#endif
66
67/*
68 * Size of User Raw I/O map
69 */
70#define	USRIOSIZE	1024
71
72/*
73 * The time for a process to be blocked before being very swappable.
74 * This is a number of seconds which the system takes as being a non-trivial
75 * amount of real time.  You probably shouldn't change this;
76 * it is used in subtle ways (fractions and multiples of it are, that is, like
77 * half of a ``long time'', almost a long time, etc.)
78 * It is related to human patience and other factors which don't really
79 * change over time.
80 */
81#define	MAXSLP 		20
82
83/*
84 * Would like to have MAX addresses = 0, but this doesn't (currently) work
85 */
86#define	VM_MIN_ADDRESS		((vaddr_t)0)
87#define	VM_MAXUSER_ADDRESS	((vaddr_t)0xfffff000)
88#define	VM_MAX_ADDRESS		VM_MAXUSER_ADDRESS
89#define	VM_MIN_KERNEL_ADDRESS	((vaddr_t)(KERNEL_SR << ADDR_SR_SHFT))
90#define	VM_MAX_KERNEL_ADDRESS	(VM_MIN_KERNEL_ADDRESS + SEGMENT_LENGTH - 1)
91
92#define	VM_PHYS_SIZE		(USRIOSIZE * NBPG)
93
94#define	VM_MDPAGE_MEMBERS	/* XXX nothing yet */
95#define	VM_MDPAGE_INIT(pg)	/* XXX nothing yet */
96#define	PMAP_PHYSSEG		/* XXX for now */
97
98struct pmap_physseg {
99	struct pv_entry *pvent;
100	char *attrs;
101};
102
103#define VM_PHYSSEG_MAX		32
104#define VM_PHYSSEG_STRAT	VM_PSTRAT_BSEARCH
105#define VM_PHYSSEG_NOADD		/* can't add RAM after vm_mem_init */
106
107#define VM_NFREELIST		1
108#define VM_FREELIST_DEFAULT	0
109
110#endif /* _MACHINE_VMPARAM_H_ */
111