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/6.0/sys/arm/include/vmparam.h 147114 2005-06-07 23:04:24Z 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 * Override the default pager_map size, there's not enough KVA.
52 */
53 /*
54 * Size of User Raw I/O map
55 */
56
57 #define USRIOSIZE 300
58
59 /* virtual sizes (bytes) for various kernel submaps */
60
61 #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE)
62
63 /*
64 * max number of non-contig chunks of physical RAM you can have
65 */
66
67 #define VM_PHYSSEG_MAX 32
68
69 /*
70 * when converting a physical address to a vm_page structure, we
71 * want to use a binary search on the chunks of physical memory
72 * to find our RAM
73 */
74
75 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH
76
77 /*
78 * this indicates that we can't add RAM to the VM system after the
79 * vm system is init'd.
80 */
81
82 #define VM_PHYSSEG_NOADD
83
84 /*
85 * we support 2 free lists:
86 *
87 * - DEFAULT for all systems
88 * - ISADMA for the ISA DMA range on Sharks only
89 */
90
91 #define VM_NFREELIST 2
92 #define VM_FREELIST_DEFAULT 0
93 #define VM_FREELIST_ISADMA 1
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 #define VM_MAXUSER_ADDRESS KERNBASE
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_ */
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