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 * 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 #endif /* _MACHINE_VMPARAM_H_ */ 132