vmparam.h revision 1.27 1 1.27 christos /* $NetBSD: vmparam.h,v 1.27 2012/02/17 16:45:46 christos Exp $ */
2 1.1 matt
3 1.1 matt /*
4 1.1 matt * Copyright (c) 1988 The Regents of the University of California.
5 1.1 matt * All rights reserved.
6 1.1 matt *
7 1.1 matt * Redistribution and use in source and binary forms, with or without
8 1.1 matt * modification, are permitted provided that the following conditions
9 1.1 matt * are met:
10 1.1 matt * 1. Redistributions of source code must retain the above copyright
11 1.1 matt * notice, this list of conditions and the following disclaimer.
12 1.1 matt * 2. Redistributions in binary form must reproduce the above copyright
13 1.1 matt * notice, this list of conditions and the following disclaimer in the
14 1.1 matt * documentation and/or other materials provided with the distribution.
15 1.22 agc * 3. Neither the name of the University nor the names of its contributors
16 1.1 matt * may be used to endorse or promote products derived from this software
17 1.1 matt * without specific prior written permission.
18 1.1 matt *
19 1.1 matt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 1.1 matt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 1.1 matt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 1.1 matt * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 1.1 matt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 1.1 matt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 1.1 matt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 1.1 matt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 1.1 matt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 1.1 matt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 1.1 matt * SUCH DAMAGE.
30 1.1 matt */
31 1.1 matt
32 1.1 matt #ifndef _ARM32_VMPARAM_H_
33 1.1 matt #define _ARM32_VMPARAM_H_
34 1.1 matt
35 1.27 christos #if defined(_KERNEL) || defined(_KMEMUSER)
36 1.3 thorpej
37 1.3 thorpej #include <arm/arm32/vmparam.h>
38 1.1 matt
39 1.1 matt /*
40 1.1 matt * Address space constants
41 1.1 matt */
42 1.1 matt
43 1.1 matt /*
44 1.1 matt * The line between user space and kernel space
45 1.11 thorpej * Mappings >= KERNEL_BASE are constant across all processes
46 1.1 matt */
47 1.25 matt #ifdef KERNEL_BASE_EXT
48 1.25 matt #define KERNEL_BASE KERNEL_BASE_EXT
49 1.25 matt #else
50 1.25 matt #define KERNEL_BASE 0x80000000
51 1.25 matt #endif
52 1.1 matt
53 1.1 matt /*
54 1.1 matt * Override the default pager_map size, there's not enough KVA.
55 1.1 matt */
56 1.24 yamt #define PAGER_MAP_DEFAULT_SIZE (4 * 1024 * 1024)
57 1.1 matt
58 1.1 matt /*
59 1.1 matt * Size of User Raw I/O map
60 1.1 matt */
61 1.1 matt
62 1.1 matt #define USRIOSIZE 300
63 1.1 matt
64 1.1 matt /* virtual sizes (bytes) for various kernel submaps */
65 1.1 matt
66 1.14 thorpej #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE)
67 1.1 matt
68 1.1 matt /*
69 1.1 matt * max number of non-contig chunks of physical RAM you can have
70 1.1 matt */
71 1.1 matt
72 1.1 matt #define VM_PHYSSEG_MAX 32
73 1.1 matt
74 1.1 matt /*
75 1.1 matt * when converting a physical address to a vm_page structure, we
76 1.1 matt * want to use a binary search on the chunks of physical memory
77 1.1 matt * to find our RAM
78 1.1 matt */
79 1.1 matt
80 1.1 matt #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH
81 1.1 matt
82 1.1 matt /*
83 1.1 matt * we support 2 free lists:
84 1.1 matt *
85 1.1 matt * - DEFAULT for all systems
86 1.1 matt * - ISADMA for the ISA DMA range on Sharks only
87 1.1 matt */
88 1.1 matt
89 1.1 matt #define VM_NFREELIST 2
90 1.1 matt #define VM_FREELIST_DEFAULT 0
91 1.1 matt #define VM_FREELIST_ISADMA 1
92 1.13 thorpej
93 1.27 christos #endif /* _KERNEL || _KMEMUSER */
94 1.1 matt
95 1.1 matt #endif /* _ARM32_VMPARAM_H_ */
96