1 /*- 2 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 3 * Copyright (C) 1995, 1996 TooLs GmbH. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by TooLs GmbH. 17 * 4. The name of TooLs GmbH may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 * $NetBSD: vmparam.h,v 1.11 2000/02/11 19:25:16 thorpej Exp $ 32 * $FreeBSD$ 33 */ 34 35 #ifndef _MACHINE_VMPARAM_H_ 36 #define _MACHINE_VMPARAM_H_ 37 38 #define USRSTACK VM_MAXUSER_ADDRESS 39 40 #ifndef MAXTSIZ 41 #define MAXTSIZ (16*1024*1024) /* max text size */ 42 #endif 43 44 #ifndef DFLDSIZ 45 #define DFLDSIZ (32*1024*1024) /* default data size */ 46 #endif 47 48 #ifndef MAXDSIZ 49 #define MAXDSIZ (512*1024*1024) /* max data size */ 50 #endif 51 52 #ifndef DFLSSIZ 53 #define DFLSSIZ (1*1024*1024) /* default stack size */ 54 #endif 55 56 #ifndef MAXSSIZ 57 #define MAXSSIZ (32*1024*1024) /* max stack size */ 58 #endif 59 60 /* 61 * Size of shared memory map 62 */ 63 #ifndef SHMMAXPGS 64 #define SHMMAXPGS 1024 65 #endif 66 67 /* 68 * The time for a process to be blocked before being very swappable. 69 * This is a number of seconds which the system takes as being a non-trivial 70 * amount of real time. You probably shouldn't change this; 71 * it is used in subtle ways (fractions and multiples of it are, that is, like 72 * half of a ``long time'', almost a long time, etc.) 73 * It is related to human patience and other factors which don't really 74 * change over time. 75 */ 76 #define MAXSLP 20 77 78 /* 79 * Would like to have MAX addresses = 0, but this doesn't (currently) work 80 */ 81 #if !defined(LOCORE) 82 #define VM_MIN_ADDRESS ((vm_offset_t)0) 83 84 #define VM_MAXUSER_ADDRESS ((vm_offset_t)0x7ffff000) 85 86 #else 87 #define VM_MIN_ADDRESS 0 88 89 #define VM_MAXUSER_ADDRESS 0x7ffff000 90 91 #endif /* LOCORE */ 92 93 #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 94 95 96 #if defined(AIM) /* AIM */ 97 98 #define KERNBASE 0x00100000 /* start of kernel virtual */ 99 100 #define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)(KERNEL_SR << ADDR_SR_SHFT)) 101 #define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 2*SEGMENT_LENGTH - 1) 102 103 /* 104 * Use the direct-mapped BAT registers for UMA small allocs. This 105 * takes pressure off the small amount of available KVA. 106 */ 107 #define UMA_MD_SMALL_ALLOC 108 109 /* 110 * On 64-bit systems in bridge mode, we have no direct map, so we fake 111 * the small_alloc() calls. But we need the VM to be in a reasonable 112 * state first. 113 */ 114 #define UMA_MD_SMALL_ALLOC_NEEDS_VM 115 116 #else 117 118 /* 119 * Kernel CCSRBAR location. We make this the reset location. 120 */ 121 #define CCSRBAR_VA 0xfef00000 122 #define CCSRBAR_SIZE 0x00100000 123 124 #define KERNBASE 0xc0000000 /* start of kernel virtual */ 125 126 #define VM_MIN_KERNEL_ADDRESS KERNBASE 127 #define VM_MAX_KERNEL_ADDRESS 0xf8000000 128 129 #endif /* AIM/E500 */ 130 131 /* XXX max. amount of KVM to be used by buffers. */ 132 #ifndef VM_MAX_KERNEL_BUF 133 #define VM_MAX_KERNEL_BUF (SEGMENT_LENGTH * 7 / 10) 134 #endif 135 136 #if !defined(LOCORE) 137 struct pmap_physseg { 138 struct pv_entry *pvent; 139 char *attrs; 140 }; 141 #endif 142 143 #define VM_PHYSSEG_MAX 16 /* 1? */ 144 145 /* 146 * The physical address space is densely populated. 147 */ 148 #define VM_PHYSSEG_DENSE 149 150 /* 151 * Create three free page pools: VM_FREEPOOL_DEFAULT is the default pool 152 * from which physical pages are allocated and VM_FREEPOOL_DIRECT is 153 * the pool from which physical pages for small UMA objects are 154 * allocated. 155 */ 156 #define VM_NFREEPOOL 3 157 #define VM_FREEPOOL_CACHE 2 158 #define VM_FREEPOOL_DEFAULT 0 159 #define VM_FREEPOOL_DIRECT 1 160 161 /* 162 * Create one free page list. 163 */ 164 #define VM_NFREELIST 1 165 #define VM_FREELIST_DEFAULT 0 166 167 /* 168 * The largest allocation size is 4MB. 169 */ 170 #define VM_NFREEORDER 11 171 172 /* 173 * Disable superpage reservations. 174 */ 175 #ifndef VM_NRESERVLEVEL 176 #define VM_NRESERVLEVEL 0 177 #endif 178 179 #ifndef VM_INITIAL_PAGEIN 180 #define VM_INITIAL_PAGEIN 16 181 #endif 182 183 #ifndef SGROWSIZ 184 #define SGROWSIZ (128UL*1024) /* amount to grow stack */ 185 #endif 186 187 #ifndef VM_KMEM_SIZE 188 #define VM_KMEM_SIZE (12 * 1024 * 1024) 189 #endif 190 191 #endif /* _MACHINE_VMPARAM_H_ */ 192