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: releng/8.2/sys/arm/include/vmparam.h 190705 2009-04-04 23:12:14Z 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 /*
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 #ifdef ARM_USE_SMALL_ALLOC
145 #define UMA_MD_SMALL_ALLOC
146 #endif /* ARM_USE_SMALL_ALLOC */
147 #endif /* _MACHINE_VMPARAM_H_ */
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