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 * Machine dependent constants for ARM. 39 */ 40 41/* 42 * Virtual memory related constants, all in bytes 43 */ 44#ifndef MAXTSIZ 45#define MAXTSIZ (64UL*1024*1024) /* max text size */ 46#endif 47#ifndef DFLDSIZ 48#define DFLDSIZ (128UL*1024*1024) /* initial data size limit */ 49#endif 50#ifndef MAXDSIZ 51#define MAXDSIZ (512UL*1024*1024) /* max data size */ 52#endif 53#ifndef DFLSSIZ 54#define DFLSSIZ (2UL*1024*1024) /* initial stack size limit */ 55#endif 56#ifndef MAXSSIZ 57#define MAXSSIZ (8UL*1024*1024) /* max stack size */ 58#endif 59#ifndef SGROWSIZ 60#define SGROWSIZ (128UL*1024) /* amount to grow stack */ 61#endif 62 63/* 64 * Address space constants 65 */ 66 67/* 68 * The line between user space and kernel space 69 * Mappings >= KERNEL_BASE are constant across all processes 70 */ 71#ifndef KERNBASE 72#define KERNBASE 0xc0000000 73#endif 74 75/* 76 * max number of non-contig chunks of physical RAM you can have 77 */ 78 79#define VM_PHYSSEG_MAX 32 80 81/* 82 * The physical address space may be sparsely populated on some ARM systems. 83 */ 84#define VM_PHYSSEG_SPARSE 85 86/* 87 * Create one free page pool. Since the ARM kernel virtual address 88 * space does not include a mapping onto the machine's entire physical 89 * memory, VM_FREEPOOL_DIRECT is defined as an alias for the default 90 * pool, VM_FREEPOOL_DEFAULT. 91 */ 92#define VM_NFREEPOOL 1 93#define VM_FREEPOOL_DEFAULT 0 94#define VM_FREEPOOL_DIRECT 0 95 96/* 97 * We need just one free list: DEFAULT. 98 */ 99#define VM_NFREELIST 1 100#define VM_FREELIST_DEFAULT 0 101 102/* 103 * The largest allocation size is 1MB. 104 */ 105#define VM_NFREEORDER 9 106 107/* 108 * Enable superpage reservations: 1 level. 109 */ 110#ifndef VM_NRESERVLEVEL 111#define VM_NRESERVLEVEL 1 112#endif 113 114/* 115 * Level 0 reservations consist of 256 pages. 116 */ 117#ifndef VM_LEVEL_0_ORDER 118#define VM_LEVEL_0_ORDER 8 119#endif 120 121#define VM_MIN_ADDRESS (0x00001000) 122#ifndef VM_MAXUSER_ADDRESS 123#define VM_MAXUSER_ADDRESS (KERNBASE - 0x00400000) /* !!! PT2MAP_SIZE */ 124#endif 125#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 126 127#define SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE) 128#define USRSTACK SHAREDPAGE 129 130/* initial pagein size of beginning of executable file */ 131#ifndef VM_INITIAL_PAGEIN 132#define VM_INITIAL_PAGEIN 16 133#endif 134 135#ifndef VM_MIN_KERNEL_ADDRESS 136#define VM_MIN_KERNEL_ADDRESS KERNBASE 137#endif 138 139#define VM_MAX_KERNEL_ADDRESS (vm_max_kernel_address) 140 141/* 142 * How many physical pages per kmem arena virtual page. 143 */ 144#ifndef VM_KMEM_SIZE_SCALE 145#define VM_KMEM_SIZE_SCALE (3) 146#endif 147 148/* 149 * Optional floor (in bytes) on the size of the kmem arena. 150 */ 151#ifndef VM_KMEM_SIZE_MIN 152#define VM_KMEM_SIZE_MIN (12 * 1024 * 1024) 153#endif 154 155/* 156 * Optional ceiling (in bytes) on the size of the kmem arena: 40% of the 157 * kernel map. 158 */ 159#ifndef VM_KMEM_SIZE_MAX 160#define VM_KMEM_SIZE_MAX ((vm_max_kernel_address - \ 161 VM_MIN_KERNEL_ADDRESS + 1) * 2 / 5) 162#endif 163 164extern vm_offset_t vm_max_kernel_address; 165 166#define ZERO_REGION_SIZE (64 * 1024) /* 64KB */ 167 168#ifndef VM_MAX_AUTOTUNE_MAXUSERS 169#define VM_MAX_AUTOTUNE_MAXUSERS 384 170#endif 171 172#define SFBUF 173#define SFBUF_MAP 174 175#define DEVMAP_MAX_VADDR ARM_VECTORS_HIGH 176 177#endif /* _MACHINE_VMPARAM_H_ */ 178