1 /* $NetBSD: vmparam.h,v 1.38 2017/11/14 16:56:03 martin 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. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)vmparam.h 8.1 (Berkeley) 6/11/93 41 */ 42 43 /* 44 * Machine dependent constants for Sun 4U and 4V UltraSPARC 45 */ 46 47 #ifndef VMPARAM_H 48 #define VMPARAM_H 49 50 #define __USE_TOPDOWN_VM 51 52 /* 53 * We use 8K VM pages on the Sun4U. Override the PAGE_* definitions 54 * to be compile-time constants. 55 */ 56 #define PAGE_SHIFT 13 57 #define PAGE_SIZE (1 << PAGE_SHIFT) 58 #define PAGE_MASK (PAGE_SIZE - 1) 59 60 /* 61 * Default pager_map of 16MB is awfully small. There is plenty 62 * of VA so use it. 63 */ 64 #define PAGER_MAP_DEFAULT_SIZE (512 * 1024 * 1024) 65 66 /* 67 * The kernel itself is mapped by the boot loader with 4Mb locked VM pages, 68 * so let's keep 4Mb definitions here as well. 69 */ 70 #define PAGE_SHIFT_4M 22 71 #define PAGE_SIZE_4M (1UL<<PAGE_SHIFT_4M) 72 #define PAGE_MASK_4M (PAGE_SIZE_4M-1) 73 74 /* 75 * USRSTACK is the top (end) of the user stack. 76 */ 77 #define USRSTACK32 0xffffe000L 78 #ifdef __arch64__ 79 #define USRSTACK 0xffffffffffffe000L 80 #else 81 #define USRSTACK USRSTACK32 82 #endif 83 84 /* 85 * Virtual memory related constants, all in bytes 86 */ 87 #if __arch64__ 88 /* 89 * 64-bit limits: 90 * 91 * Since the compiler generates `call' instructions we can't 92 * have more than 4GB in a single text segment. 93 * 94 * And since we only have a 40-bit adderss space, allow half 95 * of that for data and the other half for stack. 96 */ 97 #ifndef MAXTSIZ 98 #define MAXTSIZ (4UL*1024*1024*1024) /* max text size */ 99 #endif 100 #ifndef DFLDSIZ 101 #define DFLDSIZ (128UL*1024*1024) /* initial data size limit */ 102 #endif 103 #ifndef MAXDSIZ 104 #define MAXDSIZ (1UL<<39) /* max data size */ 105 /* 106 * For processes not using topdown VA, we need to limit the data size - 107 * they probably have not been compiled with the proper compiler memory 108 * model. 109 */ 110 #define VM_DEFAULT_ADDRESS_BOTTOMUP(da, sz) \ 111 round_page((vaddr_t)(da) + (vsize_t)max(maxdmap,1UL*1024*1024*1024)) 112 #endif 113 #ifndef DFLSSIZ 114 #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ 115 #endif 116 #ifndef MAXSSIZ 117 #define MAXSSIZ (128*1024*1024) /* max stack size */ 118 #endif 119 #else 120 /* 121 * 32-bit limits: 122 * 123 * We only have 4GB to play with. Limit data, and text 124 * each to half of that and set a reasonable stack limit. 125 * 126 */ 127 #ifndef MAXTSIZ 128 #define MAXTSIZ (2UL*1024*1024*1024) /* max text size */ 129 #endif 130 #ifndef DFLDSIZ 131 #define DFLDSIZ (128*1024*1024) /* initial data size limit */ 132 #endif 133 #ifndef MAXDSIZ 134 #define MAXDSIZ (2UL*1024*1024*1024) /* max data size */ 135 #endif 136 #ifndef DFLSSIZ 137 #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ 138 #endif 139 #ifndef MAXSSIZ 140 #define MAXSSIZ (64*1024*1024) /* max stack size */ 141 #endif 142 #endif 143 144 /* 145 * 32-bit emulation limits (same as sparc - we could go bigger) 146 */ 147 #ifndef MAXTSIZ32 148 #define MAXTSIZ32 (64*1024*1024) /* max text size */ 149 #endif 150 #ifndef DFLDSIZ32 151 #define DFLDSIZ32 (64*1024*1024) /* initial data size limit */ 152 #endif 153 #ifndef MAXDSIZ32 154 #define MAXDSIZ32 (512*1024*1024) /* max data size */ 155 #endif 156 #ifndef DFLSSIZ32 157 #define DFLSSIZ32 (2*1024*1024) /* initial stack size limit */ 158 #endif 159 #ifndef MAXSSIZ32 160 #define MAXSSIZ32 (32*1024*1024) /* max stack size */ 161 #endif 162 163 /* 164 * Mach derived constants 165 */ 166 167 /* 168 * User/kernel map constants. 169 */ 170 #define VM_MIN_ADDRESS ((vaddr_t)0) 171 #define VM_MAX_ADDRESS ((vaddr_t)-1) 172 #define VM_MAXUSER_ADDRESS ((vaddr_t)-1) 173 #define VM_MAXUSER_ADDRESS32 ((vaddr_t)(0x00000000ffffffffL&~PGOFSET)) 174 175 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)KERNBASE) 176 #ifdef __arch64__ 177 #define VM_KERNEL_MEM_VA_START ((vaddr_t)0x100000000UL) 178 #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0x000007ffffffffffUL) 179 #else 180 #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)KERNEND) 181 #endif 182 183 #define VM_PHYSSEG_MAX 32 /* up to 32 segments */ 184 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 185 186 #define VM_NFREELIST 1 187 #define VM_FREELIST_DEFAULT 0 188 189 #endif 190