vmparam.h revision 246929
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 246929 2013-02-18 01:22:20Z alc $ 32 */ 33 34#ifndef _MACHINE_VMPARAM_H_ 35#define _MACHINE_VMPARAM_H_ 36 37 38/*#include <arm/arm32/vmparam.h> 39*/ 40/* 41 * Address space constants 42 */ 43 44/* 45 * The line between user space and kernel space 46 * Mappings >= KERNEL_BASE are constant across all processes 47 */ 48#define KERNBASE 0xc0000000 49 50/* 51 * max number of non-contig chunks of physical RAM you can have 52 */ 53 54#define VM_PHYSSEG_MAX 32 55 56/* 57 * The physical address space is densely populated. 58 */ 59#define VM_PHYSSEG_DENSE 60 61/* 62 * Create three free page pools: VM_FREEPOOL_DEFAULT is the default pool 63 * from which physical pages are allocated and VM_FREEPOOL_DIRECT is 64 * the pool from which physical pages for small UMA objects are 65 * allocated. 66 */ 67#define VM_NFREEPOOL 3 68#define VM_FREEPOOL_CACHE 2 69#define VM_FREEPOOL_DEFAULT 0 70#define VM_FREEPOOL_DIRECT 1 71 72/* 73 * we support 2 free lists: 74 * 75 * - DEFAULT for all systems 76 * - ISADMA for the ISA DMA range on Sharks only 77 */ 78 79#define VM_NFREELIST 2 80#define VM_FREELIST_DEFAULT 0 81#define VM_FREELIST_ISADMA 1 82 83/* 84 * The largest allocation size is 1MB. 85 */ 86#define VM_NFREEORDER 9 87 88/* 89 * Only one memory domain. 90 */ 91#ifndef VM_NDOMAIN 92#define VM_NDOMAIN 1 93#endif 94 95/* 96 * Disable superpage reservations. 97 */ 98#ifndef VM_NRESERVLEVEL 99#define VM_NRESERVLEVEL 0 100#endif 101 102#define UPT_MAX_ADDRESS VADDR(UPTPTDI + 3, 0) 103#define UPT_MIN_ADDRESS VADDR(UPTPTDI, 0) 104 105#define VM_MIN_ADDRESS (0x00001000) 106#ifdef ARM_USE_SMALL_ALLOC 107/* 108 * ARM_KERN_DIRECTMAP is used to make sure there's enough space between 109 * VM_MAXUSER_ADDRESS and KERNBASE to map the whole memory. 110 * It has to be a compile-time constant, even if arm_init_smallalloc(), 111 * which will do the mapping, gets the real amount of memory at runtime, 112 * because VM_MAXUSER_ADDRESS is a constant. 113 */ 114#ifndef ARM_KERN_DIRECTMAP 115#define ARM_KERN_DIRECTMAP 512 * 1024 * 1024 /* 512 MB */ 116#endif 117#define VM_MAXUSER_ADDRESS KERNBASE - ARM_KERN_DIRECTMAP 118#else /* ARM_USE_SMALL_ALLOC */ 119#ifndef VM_MAXUSER_ADDRESS 120#define VM_MAXUSER_ADDRESS KERNBASE 121#endif /* VM_MAXUSER_ADDRESS */ 122#endif /* ARM_USE_SMALL_ALLOC */ 123#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 124 125#define USRSTACK VM_MAXUSER_ADDRESS 126 127/* initial pagein size of beginning of executable file */ 128#ifndef VM_INITIAL_PAGEIN 129#define VM_INITIAL_PAGEIN 16 130#endif 131 132#ifndef VM_MIN_KERNEL_ADDRESS 133#define VM_MIN_KERNEL_ADDRESS KERNBASE 134#endif 135 136#define VM_MAX_KERNEL_ADDRESS (vm_max_kernel_address) 137 138/* 139 * Virtual size (bytes) for various kernel submaps. 140 */ 141#ifndef VM_KMEM_SIZE 142#define VM_KMEM_SIZE (12*1024*1024) 143#endif 144#ifndef VM_KMEM_SIZE_SCALE 145#define VM_KMEM_SIZE_SCALE (2) 146#endif 147 148/* 149 * Ceiling on the size of the kmem submap: 60% of the kernel map. 150 */ 151#ifndef VM_KMEM_SIZE_MAX 152#define VM_KMEM_SIZE_MAX ((vm_max_kernel_address - \ 153 VM_MIN_KERNEL_ADDRESS + 1) * 3 / 5) 154#endif 155 156#define MAXTSIZ (16*1024*1024) 157#ifndef DFLDSIZ 158#define DFLDSIZ (128*1024*1024) 159#endif 160#ifndef MAXDSIZ 161#define MAXDSIZ (512*1024*1024) 162#endif 163#ifndef DFLSSIZ 164#define DFLSSIZ (2*1024*1024) 165#endif 166#ifndef MAXSSIZ 167#define MAXSSIZ (8*1024*1024) 168#endif 169#ifndef SGROWSIZ 170#define SGROWSIZ (128*1024) 171#endif 172 173#ifdef ARM_USE_SMALL_ALLOC 174#define UMA_MD_SMALL_ALLOC 175#endif /* ARM_USE_SMALL_ALLOC */ 176 177extern vm_offset_t vm_max_kernel_address; 178 179#define ZERO_REGION_SIZE (64 * 1024) /* 64KB */ 180 181#endif /* _MACHINE_VMPARAM_H_ */ 182