vmparam.h revision 247610
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: head/sys/arm/include/vmparam.h 247610 2013-03-02 05:02:29Z andrew $ 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#define KERNBASE 0xc0000000 72 73/* 74 * max number of non-contig chunks of physical RAM you can have 75 */ 76 77#define VM_PHYSSEG_MAX 32 78 79/* 80 * The physical address space is densely populated. 81 */ 82#define VM_PHYSSEG_DENSE 83 84/* 85 * Create three free page pools: VM_FREEPOOL_DEFAULT is the default pool 86 * from which physical pages are allocated and VM_FREEPOOL_DIRECT is 87 * the pool from which physical pages for small UMA objects are 88 * allocated. 89 */ 90#define VM_NFREEPOOL 3 91#define VM_FREEPOOL_CACHE 2 92#define VM_FREEPOOL_DEFAULT 0 93#define VM_FREEPOOL_DIRECT 1 94 95/* 96 * we support 2 free lists: 97 * 98 * - DEFAULT for all systems 99 * - ISADMA for the ISA DMA range on Sharks only 100 */ 101 102#define VM_NFREELIST 2 103#define VM_FREELIST_DEFAULT 0 104#define VM_FREELIST_ISADMA 1 105 106/* 107 * The largest allocation size is 1MB. 108 */ 109#define VM_NFREEORDER 9 110 111/* 112 * Only one memory domain. 113 */ 114#ifndef VM_NDOMAIN 115#define VM_NDOMAIN 1 116#endif 117 118/* 119 * Disable superpage reservations. 120 */ 121#ifndef VM_NRESERVLEVEL 122#define VM_NRESERVLEVEL 0 123#endif 124 125#define UPT_MAX_ADDRESS VADDR(UPTPTDI + 3, 0) 126#define UPT_MIN_ADDRESS VADDR(UPTPTDI, 0) 127 128#define VM_MIN_ADDRESS (0x00001000) 129#ifdef ARM_USE_SMALL_ALLOC 130/* 131 * ARM_KERN_DIRECTMAP is used to make sure there's enough space between 132 * VM_MAXUSER_ADDRESS and KERNBASE to map the whole memory. 133 * It has to be a compile-time constant, even if arm_init_smallalloc(), 134 * which will do the mapping, gets the real amount of memory at runtime, 135 * because VM_MAXUSER_ADDRESS is a constant. 136 */ 137#ifndef ARM_KERN_DIRECTMAP 138#define ARM_KERN_DIRECTMAP 512 * 1024 * 1024 /* 512 MB */ 139#endif 140#define VM_MAXUSER_ADDRESS KERNBASE - ARM_KERN_DIRECTMAP 141#else /* ARM_USE_SMALL_ALLOC */ 142#ifndef VM_MAXUSER_ADDRESS 143#define VM_MAXUSER_ADDRESS KERNBASE 144#endif /* VM_MAXUSER_ADDRESS */ 145#endif /* ARM_USE_SMALL_ALLOC */ 146#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 147 148#define USRSTACK VM_MAXUSER_ADDRESS 149 150/* initial pagein size of beginning of executable file */ 151#ifndef VM_INITIAL_PAGEIN 152#define VM_INITIAL_PAGEIN 16 153#endif 154 155#ifndef VM_MIN_KERNEL_ADDRESS 156#define VM_MIN_KERNEL_ADDRESS KERNBASE 157#endif 158 159#define VM_MAX_KERNEL_ADDRESS (vm_max_kernel_address) 160 161/* 162 * Virtual size (bytes) for various kernel submaps. 163 */ 164#ifndef VM_KMEM_SIZE 165#define VM_KMEM_SIZE (12*1024*1024) 166#endif 167#ifndef VM_KMEM_SIZE_SCALE 168#define VM_KMEM_SIZE_SCALE (3) 169#endif 170 171/* 172 * Ceiling on the size of the kmem submap: 40% of the kernel map. 173 */ 174#ifndef VM_KMEM_SIZE_MAX 175#define VM_KMEM_SIZE_MAX ((vm_max_kernel_address - \ 176 VM_MIN_KERNEL_ADDRESS + 1) * 2 / 5) 177#endif 178 179#ifdef ARM_USE_SMALL_ALLOC 180#define UMA_MD_SMALL_ALLOC 181#endif /* ARM_USE_SMALL_ALLOC */ 182 183extern vm_offset_t vm_max_kernel_address; 184 185#define ZERO_REGION_SIZE (64 * 1024) /* 64KB */ 186 187#ifndef VM_MAX_AUTOTUNE_MAXUSERS 188#define VM_MAX_AUTOTUNE_MAXUSERS 384 189#endif 190 191#endif /* _MACHINE_VMPARAM_H_ */ 192