vmparam.h revision 187592 
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 187592 2009-01-22 15:36:11Z cognet $
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/*
89 * Disable superpage reservations.
90 */
91#ifndef	VM_NRESERVLEVEL
92#define	VM_NRESERVLEVEL		0
93#endif
94
95#define UPT_MAX_ADDRESS		VADDR(UPTPTDI + 3, 0)
96#define UPT_MIN_ADDRESS		VADDR(UPTPTDI, 0)
97
98#define VM_MIN_ADDRESS          (0x00001000)
99#ifdef ARM_USE_SMALL_ALLOC
100/*
101 * ARM_KERN_DIRECTMAP is used to make sure there's enough space between
102 * VM_MAXUSER_ADDRESS and KERNBASE to map the whole memory.
103 * It has to be a compile-time constant, even if arm_init_smallalloc(),
104 * which will do the mapping, gets the real amount of memory at runtime,
105 * because VM_MAXUSER_ADDRESS is a constant.
106 */
107#ifndef ARM_KERN_DIRECTMAP
108#define ARM_KERN_DIRECTMAP 512 * 1024 * 1024 /* 512 MB */
109#endif
110#define VM_MAXUSER_ADDRESS	KERNBASE - ARM_KERN_DIRECTMAP
111#else /* ARM_USE_SMALL_ALLOC */
112#define VM_MAXUSER_ADDRESS      KERNBASE
113#endif /* ARM_USE_SMALL_ALLOC */
114#define VM_MAX_ADDRESS          VM_MAXUSER_ADDRESS
115
116#define USRSTACK        VM_MAXUSER_ADDRESS
117
118/* initial pagein size of beginning of executable file */
119#ifndef VM_INITIAL_PAGEIN
120#define VM_INITIAL_PAGEIN       16
121#endif
122
123#ifndef VM_MIN_KERNEL_ADDRESS
124#define VM_MIN_KERNEL_ADDRESS KERNBASE
125#endif
126
127#define VM_MAX_KERNEL_ADDRESS	0xffffffff
128/*
129 * Virtual size (bytes) for various kernel submaps.
130 */
131
132#ifndef VM_KMEM_SIZE
133#define VM_KMEM_SIZE            (12*1024*1024)
134#endif
135
136#define MAXTSIZ 	(16*1024*1024)
137#define DFLDSIZ         (128*1024*1024)
138#define MAXDSIZ         (512*1024*1024)
139#define DFLSSIZ         (2*1024*1024)
140#define MAXSSIZ         (8*1024*1024)
141#define SGROWSIZ        (128*1024)
142#define MAXSLP		20
143
144#define VM_PROT_READ_IS_EXEC
145
146#ifdef ARM_USE_SMALL_ALLOC
147#define UMA_MD_SMALL_ALLOC
148#endif /* ARM_USE_SMALL_ALLOC */
149#endif	/* _MACHINE_VMPARAM_H_ */
150