vmparam.h revision 172317 
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 172317 2007-09-25 06:25:06Z 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 * max number of non-contig chunks of physical RAM you can have
52 */
53
54#define	VM_PHYSSEG_MAX		32
55
56/*
57 * The physical address space is densely populated.
58 */
59#define	VM_PHYSSEG_DENSE
60
61/*
62 * Create three free page pools: VM_FREEPOOL_DEFAULT is the default pool
63 * from which physical pages are allocated and VM_FREEPOOL_DIRECT is
64 * the pool from which physical pages for small UMA objects are
65 * allocated.
66 */
67#define	VM_NFREEPOOL		3
68#define	VM_FREEPOOL_CACHE	2
69#define	VM_FREEPOOL_DEFAULT	0
70#define	VM_FREEPOOL_DIRECT	1
71
72/*
73 * we support 2 free lists:
74 *
75 *	- DEFAULT for all systems
76 *	- ISADMA for the ISA DMA range on Sharks only
77 */
78
79#define	VM_NFREELIST		2
80#define	VM_FREELIST_DEFAULT	0
81#define	VM_FREELIST_ISADMA	1
82
83/*
84 * The largest allocation size is 1MB.
85 */
86#define	VM_NFREEORDER		9
87
88#define UPT_MAX_ADDRESS		VADDR(UPTPTDI + 3, 0)
89#define UPT_MIN_ADDRESS		VADDR(UPTPTDI, 0)
90
91#define VM_MIN_ADDRESS          (0x00001000)
92#ifdef ARM_USE_SMALL_ALLOC
93#ifndef ARM_KERN_DIRECTMAP
94#define ARM_KERN_DIRECTMAP 512 * 1024 * 1024 /* 512 MB */
95#endif
96#define VM_MAXUSER_ADDRESS	KERNBASE - ARM_KERN_DIRECTMAP
97#else /* ARM_USE_SMALL_ALLOC */
98#define VM_MAXUSER_ADDRESS      KERNBASE
99#endif /* ARM_USE_SMALL_ALLOC */
100#define VM_MAX_ADDRESS          VM_MAXUSER_ADDRESS
101
102#define USRSTACK        VM_MAXUSER_ADDRESS
103
104/* initial pagein size of beginning of executable file */
105#ifndef VM_INITIAL_PAGEIN
106#define VM_INITIAL_PAGEIN       16
107#endif
108
109#ifndef VM_MIN_KERNEL_ADDRESS
110#define VM_MIN_KERNEL_ADDRESS KERNBASE
111#endif
112
113#define VM_MAX_KERNEL_ADDRESS	0xffffffff
114/*
115 * Virtual size (bytes) for various kernel submaps.
116 */
117
118#ifndef VM_KMEM_SIZE
119#define VM_KMEM_SIZE            (12*1024*1024)
120#endif
121
122#define MAXTSIZ 	(16*1024*1024)
123#define DFLDSIZ         (128*1024*1024)
124#define MAXDSIZ         (512*1024*1024)
125#define DFLSSIZ         (2*1024*1024)
126#define MAXSSIZ         (8*1024*1024)
127#define SGROWSIZ        (128*1024)
128#define MAXSLP		20
129
130#define VM_PROT_READ_IS_EXEC
131
132#ifdef ARM_USE_SMALL_ALLOC
133#define UMA_MD_SMALL_ALLOC
134#endif /* ARM_USE_SMALL_ALLOC */
135#endif	/* _MACHINE_VMPARAM_H_ */
136