1/* $OpenBSD: vmparam.h,v 1.2 1998/09/15 10:50:12 pefo Exp $ */ 2/* $NetBSD: vmparam.h,v 1.5 1994/10/26 21:10:10 cgd Exp $ */ 3 4/* 5 * Copyright (c) 1988 University of Utah. 6 * Copyright (c) 1992, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * the Systems Programming Group of the University of Utah Computer 11 * Science Department and Ralph Campbell. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * from: Utah Hdr: vmparam.h 1.16 91/01/18 38 * @(#)vmparam.h 8.2 (Berkeley) 4/22/94 39 * JNPR: vmparam.h,v 1.3.2.1 2007/09/10 06:01:28 girish 40 * $FreeBSD$ 41 */ 42 43#ifndef _MACHINE_VMPARAM_H_ 44#define _MACHINE_VMPARAM_H_ 45 46/* 47 * Machine dependent constants mips processors. 48 */ 49 50/* 51 * Virtual memory related constants, all in bytes 52 */ 53#ifndef MAXTSIZ 54#define MAXTSIZ (128UL*1024*1024) /* max text size */ 55#endif 56#ifndef DFLDSIZ 57#define DFLDSIZ (128UL*1024*1024) /* initial data size limit */ 58#endif 59#ifndef MAXDSIZ 60#define MAXDSIZ (1*1024UL*1024*1024) /* max data size */ 61#endif 62#ifndef DFLSSIZ 63#define DFLSSIZ (8UL*1024*1024) /* initial stack size limit */ 64#endif 65#ifndef MAXSSIZ 66#define MAXSSIZ (64UL*1024*1024) /* max stack size */ 67#endif 68#ifndef SGROWSIZ 69#define SGROWSIZ (128UL*1024) /* amount to grow stack */ 70#endif 71 72/* 73 * Mach derived constants 74 */ 75 76/* user/kernel map constants */ 77#define VM_MIN_ADDRESS ((vm_offset_t)0x00000000) 78#define VM_MAX_ADDRESS ((vm_offset_t)(intptr_t)(int32_t)0xffffffff) 79 80#define VM_MINUSER_ADDRESS ((vm_offset_t)0x00000000) 81 82#ifdef __mips_n64 83#define VM_MAXUSER_ADDRESS (VM_MINUSER_ADDRESS + (NPDEPG * NBSEG)) 84#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)0xc000000000000000) 85#define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + (NPDEPG * NBSEG)) 86#else 87#define VM_MAXUSER_ADDRESS ((vm_offset_t)0x80000000) 88#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)0xC0000000) 89#define VM_MAX_KERNEL_ADDRESS ((vm_offset_t)0xFFFFC000) 90#endif 91 92#define KERNBASE ((vm_offset_t)(intptr_t)(int32_t)0x80000000) 93/* 94 * USRSTACK needs to start a little below 0x8000000 because the R8000 95 * and some QED CPUs perform some virtual address checks before the 96 * offset is calculated. 97 */ 98#define USRSTACK (VM_MAXUSER_ADDRESS - PAGE_SIZE) 99#ifdef __mips_n64 100#define FREEBSD32_USRSTACK (((vm_offset_t)0x80000000) - PAGE_SIZE) 101#endif 102 103/* 104 * Disable superpage reservations. (not sure if this is right 105 * I copied it from ARM) 106 */ 107#ifndef VM_NRESERVLEVEL 108#define VM_NRESERVLEVEL 0 109#endif 110 111/* 112 * How many physical pages per kmem arena virtual page. 113 */ 114#ifndef VM_KMEM_SIZE_SCALE 115#define VM_KMEM_SIZE_SCALE (3) 116#endif 117 118/* 119 * Optional floor (in bytes) on the size of the kmem arena. 120 */ 121#ifndef VM_KMEM_SIZE_MIN 122#define VM_KMEM_SIZE_MIN (12 * 1024 * 1024) 123#endif 124 125/* 126 * Optional ceiling (in bytes) on the size of the kmem arena: 40% of the 127 * kernel map. 128 */ 129#ifndef VM_KMEM_SIZE_MAX 130#define VM_KMEM_SIZE_MAX ((VM_MAX_KERNEL_ADDRESS - \ 131 VM_MIN_KERNEL_ADDRESS + 1) * 2 / 5) 132#endif 133 134/* initial pagein size of beginning of executable file */ 135#ifndef VM_INITIAL_PAGEIN 136#define VM_INITIAL_PAGEIN 16 137#endif 138 139#define UMA_MD_SMALL_ALLOC 140 141/* 142 * max number of non-contig chunks of physical RAM you can have 143 */ 144#define VM_PHYSSEG_MAX 32 145 146/* 147 * The physical address space is sparsely populated. 148 */ 149#define VM_PHYSSEG_SPARSE 150 151/* 152 * Create two free page pools: VM_FREEPOOL_DEFAULT is the default pool 153 * from which physical pages are allocated and VM_FREEPOOL_DIRECT is 154 * the pool from which physical pages for small UMA objects are 155 * allocated. 156 */ 157#define VM_NFREEPOOL 2 158#define VM_FREEPOOL_DEFAULT 0 159#define VM_FREEPOOL_DIRECT 1 160 161/* 162 * Create up to two free lists on !__mips_n64: VM_FREELIST_DEFAULT is for 163 * physical pages that are above the largest physical address that is 164 * accessible through the direct map (KSEG0) and VM_FREELIST_LOWMEM is for 165 * physical pages that are below that address. VM_LOWMEM_BOUNDARY is the 166 * physical address for the end of the direct map (KSEG0). 167 */ 168#ifdef __mips_n64 169#define VM_NFREELIST 1 170#define VM_FREELIST_DEFAULT 0 171#define VM_FREELIST_DIRECT VM_FREELIST_DEFAULT 172#else 173#define VM_NFREELIST 2 174#define VM_FREELIST_DEFAULT 0 175#define VM_FREELIST_LOWMEM 1 176#define VM_FREELIST_DIRECT VM_FREELIST_LOWMEM 177#define VM_LOWMEM_BOUNDARY ((vm_paddr_t)0x20000000) 178#endif 179 180/* 181 * The largest allocation size is 1MB. 182 */ 183#define VM_NFREEORDER 9 184 185#define ZERO_REGION_SIZE (64 * 1024) /* 64KB */ 186 187#ifndef __mips_n64 188#define SFBUF 189#define SFBUF_MAP 190#endif 191 192#endif /* !_MACHINE_VMPARAM_H_ */ 193