1 /* $NetBSD: vmparam.h,v 1.13 2000/09/28 19:56:14 eeh Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * All advertising materials mentioning features or use of this software 12 * must display the following acknowledgement: 13 * This product includes software developed by the University of 14 * California, Lawrence Berkeley Laboratory. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the University of 27 * California, Berkeley and its contributors. 28 * 4. Neither the name of the University nor the names of its contributors 29 * may be used to endorse or promote products derived from this software 30 * without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 35 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 42 * SUCH DAMAGE. 43 * 44 * @(#)vmparam.h 8.1 (Berkeley) 6/11/93 45 */ 46 47 /* 48 * Machine dependent constants for Sun-4c SPARC 49 */ 50 51 #ifndef VMPARAM_H 52 #define VMPARAM_H 53 54 /* 55 * USRTEXT is the start of the user text/data space, while USRSTACK 56 * is the top (end) of the user stack. 57 */ 58 #define USRTEXT 0x2000 /* Start of user text */ 59 #ifdef __arch64__ 60 #define USRSTACK 0xffffffffffffe000L 61 #else 62 #define USRSTACK 0xffffe000L 63 #endif 64 65 /* 66 * Virtual memory related constants, all in bytes 67 * 68 * XXXX -- These need to be updated to 64-bits. 69 */ 70 #ifndef MAXTSIZ 71 #define MAXTSIZ (64*1024*1024) /* max text size */ 72 #endif 73 #ifndef DFLDSIZ 74 #define DFLDSIZ (64*1024*1024) /* initial data size limit */ 75 #endif 76 #ifndef MAXDSIZ 77 #define MAXDSIZ (256*1024*1024) /* max data size */ 78 #endif 79 #ifndef DFLSSIZ 80 #define DFLSSIZ (512*1024) /* initial stack size limit */ 81 #endif 82 #ifndef MAXSSIZ 83 #define MAXSSIZ MAXDSIZ /* max stack size */ 84 #endif 85 86 /* 87 * Size of shared memory map 88 */ 89 #ifndef SHMMAXPGS 90 #define SHMMAXPGS 1024 91 #endif 92 93 /* 94 * The time for a process to be blocked before being very swappable. 95 * This is a number of seconds which the system takes as being a non-trivial 96 * amount of real time. You probably shouldn't change this; 97 * it is used in subtle ways (fractions and multiples of it are, that is, like 98 * half of a ``long time'', almost a long time, etc.) 99 * It is related to human patience and other factors which don't really 100 * change over time. 101 */ 102 #define MAXSLP 20 103 104 /* 105 * Mach derived constants 106 */ 107 108 /* 109 * User/kernel map constants. 110 */ 111 #define VM_MIN_ADDRESS ((vaddr_t)0) 112 #define VM_MAX_ADDRESS ((vaddr_t)-1) 113 #define VM_MAXUSER_ADDRESS ((vaddr_t)-1) 114 115 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)KERNBASE) 116 #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)KERNEND) 117 118 #define VM_PHYSSEG_MAX 32 /* up to 32 segments */ 119 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 120 #define VM_PHYSSEG_NOADD /* can't add RAM after vm_mem_init */ 121 122 #define VM_NFREELIST 1 123 #define VM_FREELIST_DEFAULT 0 124 125 /* 126 * pmap specific data stored in the vm_physmem[] array 127 */ 128 129 struct pmap_physseg { 130 struct pv_entry *pvent; 131 }; 132 133 #if defined (_KERNEL) && !defined(_LOCORE) 134 struct vm_map; 135 vaddr_t dvma_mapin __P((struct vm_map *, vaddr_t, int, int)); 136 void dvma_mapout __P((vaddr_t, vaddr_t, int)); 137 #endif 138 #endif 139