vmparam.h revision 169291 
1/*	$NetBSD: vmparam.h,v 1.26 2003/08/07 16:27:47 agc Exp $	*/
2
3/*-
4 * Copyright (c) 1988 The Regents of the University of California.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * $FreeBSD: head/sys/arm/include/vmparam.h 169291 2007-05-05 19:50:28Z alc $
32 */
33
34#ifndef	_MACHINE_VMPARAM_H_
35#define	_MACHINE_VMPARAM_H_
36
37
38/*#include <arm/arm32/vmparam.h>
39*/
40/*
41 * Address space constants
42 */
43
44/*
45 * The line between user space and kernel space
46 * Mappings >= KERNEL_BASE are constant across all processes
47 */
48#define	KERNBASE		0xc0000000
49
50/*
51 * Override the default pager_map size, there's not enough KVA.
52 */
53
54/*
55 * max number of non-contig chunks of physical RAM you can have
56 */
57
58#define	VM_PHYSSEG_MAX		32
59
60/*
61 * when converting a physical address to a vm_page structure, we
62 * want to use a binary search on the chunks of physical memory
63 * to find our RAM
64 */
65
66#define	VM_PHYSSEG_STRAT	VM_PSTRAT_BSEARCH
67
68/*
69 * this indicates that we can't add RAM to the VM system after the
70 * vm system is init'd.
71 */
72
73#define	VM_PHYSSEG_NOADD
74
75/*
76 * The physical address space is densely populated.
77 */
78#define	VM_PHYSSEG_DENSE
79
80/*
81 * we support 2 free lists:
82 *
83 *	- DEFAULT for all systems
84 *	- ISADMA for the ISA DMA range on Sharks only
85 */
86
87#define	VM_NFREELIST		2
88#define	VM_FREELIST_DEFAULT	0
89#define	VM_FREELIST_ISADMA	1
90
91#define UPT_MAX_ADDRESS		VADDR(UPTPTDI + 3, 0)
92#define UPT_MIN_ADDRESS		VADDR(UPTPTDI, 0)
93
94#define VM_MIN_ADDRESS          (0x00001000)
95#ifdef ARM_USE_SMALL_ALLOC
96#ifndef ARM_KERN_DIRECTMAP
97#define ARM_KERN_DIRECTMAP 512 * 1024 * 1024 /* 512 MB */
98#endif
99#define VM_MAXUSER_ADDRESS	KERNBASE - ARM_KERN_DIRECTMAP
100#else /* ARM_USE_SMALL_ALLOC */
101#define VM_MAXUSER_ADDRESS      KERNBASE
102#endif /* ARM_USE_SMALL_ALLOC */
103#define VM_MAX_ADDRESS          VM_MAXUSER_ADDRESS
104
105#define USRSTACK        VM_MAXUSER_ADDRESS
106
107/* initial pagein size of beginning of executable file */
108#ifndef VM_INITIAL_PAGEIN
109#define VM_INITIAL_PAGEIN       16
110#endif
111
112#ifndef VM_MIN_KERNEL_ADDRESS
113#define VM_MIN_KERNEL_ADDRESS KERNBASE
114#endif
115
116#define VM_MAX_KERNEL_ADDRESS	0xffffffff
117/*
118 * Virtual size (bytes) for various kernel submaps.
119 */
120
121#ifndef VM_KMEM_SIZE
122#define VM_KMEM_SIZE            (12*1024*1024)
123#endif
124
125#define MAXTSIZ 	(16*1024*1024)
126#define DFLDSIZ         (128*1024*1024)
127#define MAXDSIZ         (512*1024*1024)
128#define DFLSSIZ         (2*1024*1024)
129#define MAXSSIZ         (8*1024*1024)
130#define SGROWSIZ        (128*1024)
131#define MAXSLP		20
132
133#define VM_PROT_READ_IS_EXEC
134
135#ifdef ARM_USE_SMALL_ALLOC
136#define UMA_MD_SMALL_ALLOC
137#endif /* ARM_USE_SMALL_ALLOC */
138#endif	/* _MACHINE_VMPARAM_H_ */
139