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 * Override the default pager_map size, there's not enough KVA. 52 */ 53 54 /* 55 * max number of non-contig chunks of physical RAM you can have 56 */ 57 58 #define VM_PHYSSEG_MAX 32 59 60 /* 61 * when converting a physical address to a vm_page structure, we 62 * want to use a binary search on the chunks of physical memory 63 * to find our RAM 64 */ 65 66 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 67 68 /* 69 * this indicates that we can't add RAM to the VM system after the 70 * vm system is init'd. 71 */ 72 73 #define VM_PHYSSEG_NOADD 74 75 /* 76 * The physical address space is densely populated. 77 */ 78 #define VM_PHYSSEG_DENSE 79 80 /* 81 * we support 2 free lists: 82 * 83 * - DEFAULT for all systems 84 * - ISADMA for the ISA DMA range on Sharks only 85 */ 86 87 #define VM_NFREELIST 2 88 #define VM_FREELIST_DEFAULT 0 89 #define VM_FREELIST_ISADMA 1 90 91 #define UPT_MAX_ADDRESS VADDR(UPTPTDI + 3, 0) 92 #define UPT_MIN_ADDRESS VADDR(UPTPTDI, 0) 93 94 #define VM_MIN_ADDRESS (0x00001000) 95 #ifdef ARM_USE_SMALL_ALLOC 96 #ifndef ARM_KERN_DIRECTMAP 97 #define ARM_KERN_DIRECTMAP 512 * 1024 * 1024 /* 512 MB */ 98 #endif 99 #define VM_MAXUSER_ADDRESS KERNBASE - ARM_KERN_DIRECTMAP 100 #else /* ARM_USE_SMALL_ALLOC */ 101 #define VM_MAXUSER_ADDRESS KERNBASE 102 #endif /* ARM_USE_SMALL_ALLOC */ 103 #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 104 105 #define USRSTACK VM_MAXUSER_ADDRESS 106 107 /* initial pagein size of beginning of executable file */ 108 #ifndef VM_INITIAL_PAGEIN 109 #define VM_INITIAL_PAGEIN 16 110 #endif 111 112 #ifndef VM_MIN_KERNEL_ADDRESS 113 #define VM_MIN_KERNEL_ADDRESS KERNBASE 114 #endif 115 116 #define VM_MAX_KERNEL_ADDRESS 0xffffffff 117 /* 118 * Virtual size (bytes) for various kernel submaps. 119 */ 120 121 #ifndef VM_KMEM_SIZE 122 #define VM_KMEM_SIZE (12*1024*1024) 123 #endif 124 125 #define MAXTSIZ (16*1024*1024) 126 #define DFLDSIZ (128*1024*1024) 127 #define MAXDSIZ (512*1024*1024) 128 #define DFLSSIZ (2*1024*1024) 129 #define MAXSSIZ (8*1024*1024) 130 #define SGROWSIZ (128*1024) 131 #define MAXSLP 20 132 133 #define VM_PROT_READ_IS_EXEC 134 135 #ifdef ARM_USE_SMALL_ALLOC 136 #define UMA_MD_SMALL_ALLOC 137 #endif /* ARM_USE_SMALL_ALLOC */ 138 #endif /* _MACHINE_VMPARAM_H_ */ 139