1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 5 * Copyright (C) 1995, 1996 TooLs GmbH. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by TooLs GmbH. 19 * 4. The name of TooLs GmbH may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 * $NetBSD: vmparam.h,v 1.11 2000/02/11 19:25:16 thorpej Exp $ 34 * $FreeBSD$ 35 */ 36 37 #ifndef _MACHINE_VMPARAM_H_ 38 #define _MACHINE_VMPARAM_H_ 39 40 #define USRSTACK SHAREDPAGE 41 42 #ifndef MAXTSIZ 43 #define MAXTSIZ (1*1024*1024*1024) /* max text size */ 44 #endif 45 46 #ifndef DFLDSIZ 47 #define DFLDSIZ (128*1024*1024) /* default data size */ 48 #endif 49 50 #ifndef MAXDSIZ 51 #define MAXDSIZ (1*1024*1024*1024) /* max data size */ 52 #endif 53 54 #ifndef DFLSSIZ 55 #define DFLSSIZ (8*1024*1024) /* default stack size */ 56 #endif 57 58 #ifndef MAXSSIZ 59 #define MAXSSIZ (64*1024*1024) /* max stack size */ 60 #endif 61 62 #ifdef AIM 63 #define VM_MAXUSER_ADDRESS32 ((vm_offset_t)0xfffff000) 64 #else 65 #define VM_MAXUSER_ADDRESS32 ((vm_offset_t)0x7ffff000) 66 #endif 67 68 /* 69 * Would like to have MAX addresses = 0, but this doesn't (currently) work 70 */ 71 #if !defined(LOCORE) 72 #ifdef __powerpc64__ 73 #define VM_MIN_ADDRESS (0x0000000000000000UL) 74 #ifdef AIM 75 #define VM_MAXUSER_ADDRESS (0xfffffffffffff000UL) 76 #else 77 #define VM_MAXUSER_ADDRESS (0x7ffffffffffff000UL) 78 #endif 79 #define VM_MAX_ADDRESS (0xffffffffffffffffUL) 80 #else 81 #define VM_MIN_ADDRESS ((vm_offset_t)0) 82 #define VM_MAXUSER_ADDRESS VM_MAXUSER_ADDRESS32 83 #define VM_MAX_ADDRESS ((vm_offset_t)0xffffffff) 84 #endif 85 #define SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE) 86 #else /* LOCORE */ 87 #ifdef BOOKE 88 #define VM_MIN_ADDRESS 0 89 #ifdef __powerpc64__ 90 #define VM_MAXUSER_ADDRESS 0x7ffffffffffff000 91 #else 92 #define VM_MAXUSER_ADDRESS 0x7ffff000 93 #endif 94 #endif 95 #endif /* LOCORE */ 96 97 #define FREEBSD32_SHAREDPAGE (VM_MAXUSER_ADDRESS32 - PAGE_SIZE) 98 #define FREEBSD32_USRSTACK FREEBSD32_SHAREDPAGE 99 100 #ifdef __powerpc64__ 101 #define VM_MIN_KERNEL_ADDRESS 0xc000000000000000UL 102 #define VM_MAX_KERNEL_ADDRESS 0xc0000001c7ffffffUL 103 #define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS 104 #endif 105 106 #ifdef AIM 107 #define KERNBASE 0x00100000UL /* start of kernel virtual */ 108 109 #ifndef __powerpc64__ 110 #define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)KERNEL_SR << ADDR_SR_SHFT) 111 #define VM_MAX_SAFE_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 2*SEGMENT_LENGTH -1) 112 #define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 3*SEGMENT_LENGTH - 1) 113 #endif 114 115 /* 116 * Use the direct-mapped BAT registers for UMA small allocs. This 117 * takes pressure off the small amount of available KVA. 118 */ 119 #define UMA_MD_SMALL_ALLOC 120 121 #else /* Book-E */ 122 123 #ifdef __powerpc64__ 124 #ifndef LOCORE 125 #define KERNBASE 0xc000000000000000UL /* start of kernel virtual */ 126 #else 127 #define KERNBASE 0xc000000000000000 /* start of kernel virtual */ 128 #endif 129 #else 130 #define KERNBASE 0xc0000000 /* start of kernel virtual */ 131 132 #define VM_MIN_KERNEL_ADDRESS KERNBASE 133 #define VM_MAX_KERNEL_ADDRESS 0xffffefff 134 #define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS 135 #endif 136 137 #endif /* AIM/E500 */ 138 139 #if !defined(LOCORE) 140 struct pmap_physseg { 141 struct pv_entry *pvent; 142 char *attrs; 143 }; 144 #endif 145 146 #define VM_PHYSSEG_MAX 16 /* 1? */ 147 148 /* 149 * The physical address space is densely populated on 32-bit systems, 150 * but may not be on 64-bit ones. 151 */ 152 #ifdef __powerpc64__ 153 #define VM_PHYSSEG_SPARSE 154 #else 155 #define VM_PHYSSEG_DENSE 156 #endif 157 158 /* 159 * Create two free page pools: VM_FREEPOOL_DEFAULT is the default pool 160 * from which physical pages are allocated and VM_FREEPOOL_DIRECT is 161 * the pool from which physical pages for small UMA objects are 162 * allocated. 163 */ 164 #define VM_NFREEPOOL 2 165 #define VM_FREEPOOL_DEFAULT 0 166 #define VM_FREEPOOL_DIRECT 1 167 168 /* 169 * Create one free page list. 170 */ 171 #define VM_NFREELIST 1 172 #define VM_FREELIST_DEFAULT 0 173 174 /* 175 * The largest allocation size is 4MB. 176 */ 177 #define VM_NFREEORDER 11 178 179 /* 180 * Disable superpage reservations. 181 */ 182 #ifndef VM_NRESERVLEVEL 183 #define VM_NRESERVLEVEL 0 184 #endif 185 186 #ifndef VM_INITIAL_PAGEIN 187 #define VM_INITIAL_PAGEIN 16 188 #endif 189 190 #ifndef SGROWSIZ 191 #define SGROWSIZ (128UL*1024) /* amount to grow stack */ 192 #endif 193 194 /* 195 * How many physical pages per kmem arena virtual page. 196 */ 197 #ifndef VM_KMEM_SIZE_SCALE 198 #define VM_KMEM_SIZE_SCALE (3) 199 #endif 200 201 /* 202 * Optional floor (in bytes) on the size of the kmem arena. 203 */ 204 #ifndef VM_KMEM_SIZE_MIN 205 #define VM_KMEM_SIZE_MIN (12 * 1024 * 1024) 206 #endif 207 208 /* 209 * Optional ceiling (in bytes) on the size of the kmem arena: 40% of the 210 * usable KVA space. 211 */ 212 #ifndef VM_KMEM_SIZE_MAX 213 #define VM_KMEM_SIZE_MAX ((VM_MAX_SAFE_KERNEL_ADDRESS - \ 214 VM_MIN_KERNEL_ADDRESS + 1) * 2 / 5) 215 #endif 216 217 #define ZERO_REGION_SIZE (64 * 1024) /* 64KB */ 218 219 /* 220 * On 32-bit OEA, the only purpose for which sf_buf is used is to implement 221 * an opaque pointer required by the machine-independent parts of the kernel. 222 * That pointer references the vm_page that is "mapped" by the sf_buf. The 223 * actual mapping is provided by the direct virtual-to-physical mapping. 224 * 225 * On OEA64 and Book-E, we need to do something a little more complicated. Use 226 * the runtime-detected hw_direct_map to pick between the two cases. Our 227 * friends in vm_machdep.c will do the same to ensure nothing gets confused. 228 */ 229 #define SFBUF 230 #define SFBUF_NOMD 231 #define SFBUF_OPTIONAL_DIRECT_MAP hw_direct_map 232 #define SFBUF_PHYS_DMAP(x) (x) 233 234 #endif /* _MACHINE_VMPARAM_H_ */ 235