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 * $FreeBSD$ 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 * Only one memory domain. 90 */ 91 #ifndef VM_NDOMAIN 92 #define VM_NDOMAIN 1 93 #endif 94 95 /* 96 * Disable superpage reservations. 97 */ 98 #ifndef VM_NRESERVLEVEL 99 #define VM_NRESERVLEVEL 0 100 #endif 101 102 #define UPT_MAX_ADDRESS VADDR(UPTPTDI + 3, 0) 103 #define UPT_MIN_ADDRESS VADDR(UPTPTDI, 0) 104 105 #define VM_MIN_ADDRESS (0x00001000) 106 #ifdef ARM_USE_SMALL_ALLOC 107 /* 108 * ARM_KERN_DIRECTMAP is used to make sure there's enough space between 109 * VM_MAXUSER_ADDRESS and KERNBASE to map the whole memory. 110 * It has to be a compile-time constant, even if arm_init_smallalloc(), 111 * which will do the mapping, gets the real amount of memory at runtime, 112 * because VM_MAXUSER_ADDRESS is a constant. 113 */ 114 #ifndef ARM_KERN_DIRECTMAP 115 #define ARM_KERN_DIRECTMAP 512 * 1024 * 1024 /* 512 MB */ 116 #endif 117 #define VM_MAXUSER_ADDRESS KERNBASE - ARM_KERN_DIRECTMAP 118 #else /* ARM_USE_SMALL_ALLOC */ 119 #define VM_MAXUSER_ADDRESS KERNBASE 120 #endif /* ARM_USE_SMALL_ALLOC */ 121 #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 122 123 #define USRSTACK VM_MAXUSER_ADDRESS 124 125 /* initial pagein size of beginning of executable file */ 126 #ifndef VM_INITIAL_PAGEIN 127 #define VM_INITIAL_PAGEIN 16 128 #endif 129 130 #ifndef VM_MIN_KERNEL_ADDRESS 131 #define VM_MIN_KERNEL_ADDRESS KERNBASE 132 #endif 133 134 #define VM_MAX_KERNEL_ADDRESS 0xffffffff 135 /* 136 * Virtual size (bytes) for various kernel submaps. 137 */ 138 139 #ifndef VM_KMEM_SIZE 140 #define VM_KMEM_SIZE (12*1024*1024) 141 #endif 142 143 #define MAXTSIZ (16*1024*1024) 144 #define DFLDSIZ (128*1024*1024) 145 #define MAXDSIZ (512*1024*1024) 146 #define DFLSSIZ (2*1024*1024) 147 #define MAXSSIZ (8*1024*1024) 148 #define SGROWSIZ (128*1024) 149 150 #ifdef ARM_USE_SMALL_ALLOC 151 #define UMA_MD_SMALL_ALLOC 152 #endif /* ARM_USE_SMALL_ALLOC */ 153 154 #define ZERO_REGION_SIZE (64 * 1024) /* 64KB */ 155 156 #endif /* _MACHINE_VMPARAM_H_ */ 157