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 #ifdef __powerpc64__ 52 #define MAXDSIZ (32UL*1024*1024*1024) /* max data size */ 53 #else 54 #define MAXDSIZ (1*1024*1024*1024) /* max data size */ 55 #endif 56 #endif 57 58 #ifndef DFLSSIZ 59 #define DFLSSIZ (8*1024*1024) /* default stack size */ 60 #endif 61 62 #ifndef MAXSSIZ 63 #define MAXSSIZ (64*1024*1024) /* max stack size */ 64 #endif 65 66 #ifdef AIM 67 #define VM_MAXUSER_ADDRESS32 ((vm_offset_t)0xfffff000) 68 #else 69 #define VM_MAXUSER_ADDRESS32 ((vm_offset_t)0x7ffff000) 70 #endif 71 72 /* 73 * Would like to have MAX addresses = 0, but this doesn't (currently) work 74 */ 75 #if !defined(LOCORE) 76 #ifdef __powerpc64__ 77 #define VM_MIN_ADDRESS (0x0000000000000000UL) 78 #ifdef AIM 79 #define VM_MAXUSER_ADDRESS (0xfffffffffffff000UL) 80 #else 81 #define VM_MAXUSER_ADDRESS (0x7ffffffffffff000UL) 82 #endif 83 #define VM_MAX_ADDRESS (0xffffffffffffffffUL) 84 #else 85 #define VM_MIN_ADDRESS ((vm_offset_t)0) 86 #define VM_MAXUSER_ADDRESS VM_MAXUSER_ADDRESS32 87 #define VM_MAX_ADDRESS ((vm_offset_t)0xffffffff) 88 #endif 89 #define SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE) 90 #else /* LOCORE */ 91 #ifdef BOOKE 92 #define VM_MIN_ADDRESS 0 93 #ifdef __powerpc64__ 94 #define VM_MAXUSER_ADDRESS 0x7ffffffffffff000 95 #else 96 #define VM_MAXUSER_ADDRESS 0x7ffff000 97 #endif 98 #endif 99 #endif /* LOCORE */ 100 101 #define FREEBSD32_SHAREDPAGE (VM_MAXUSER_ADDRESS32 - PAGE_SIZE) 102 #define FREEBSD32_USRSTACK FREEBSD32_SHAREDPAGE 103 104 #ifdef __powerpc64__ 105 #define VM_MIN_KERNEL_ADDRESS 0xc000000000000000UL 106 #define VM_MAX_KERNEL_ADDRESS 0xc0000001c7ffffffUL 107 #define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS 108 #endif 109 110 #ifdef AIM 111 #define KERNBASE 0x00100000UL /* start of kernel virtual */ 112 113 #ifndef __powerpc64__ 114 #define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)KERNEL_SR << ADDR_SR_SHFT) 115 #define VM_MAX_SAFE_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 2*SEGMENT_LENGTH -1) 116 #define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 3*SEGMENT_LENGTH - 1) 117 #endif 118 119 /* 120 * Use the direct-mapped BAT registers for UMA small allocs. This 121 * takes pressure off the small amount of available KVA. 122 */ 123 #define UMA_MD_SMALL_ALLOC 124 125 #else /* Book-E */ 126 127 #ifdef __powerpc64__ 128 #ifndef LOCORE 129 #define KERNBASE 0xc000000000000000UL /* start of kernel virtual */ 130 #else 131 #define KERNBASE 0xc000000000000000 /* start of kernel virtual */ 132 #endif 133 #else 134 #define KERNBASE 0xc0000000 /* start of kernel virtual */ 135 136 #define VM_MIN_KERNEL_ADDRESS KERNBASE 137 #define VM_MAX_KERNEL_ADDRESS 0xffffefff 138 #define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS 139 #endif 140 141 #endif /* AIM/E500 */ 142 143 #if !defined(LOCORE) 144 struct pmap_physseg { 145 struct pv_entry *pvent; 146 char *attrs; 147 }; 148 #endif 149 150 #define VM_PHYSSEG_MAX 16 /* 1? */ 151 152 /* 153 * The physical address space is densely populated on 32-bit systems, 154 * but may not be on 64-bit ones. 155 */ 156 #ifdef __powerpc64__ 157 #define VM_PHYSSEG_SPARSE 158 #else 159 #define VM_PHYSSEG_DENSE 160 #endif 161 162 /* 163 * Create two free page pools: VM_FREEPOOL_DEFAULT is the default pool 164 * from which physical pages are allocated and VM_FREEPOOL_DIRECT is 165 * the pool from which physical pages for small UMA objects are 166 * allocated. 167 */ 168 #define VM_NFREEPOOL 2 169 #define VM_FREEPOOL_DEFAULT 0 170 #define VM_FREEPOOL_DIRECT 1 171 172 /* 173 * Create one free page list. 174 */ 175 #define VM_NFREELIST 1 176 #define VM_FREELIST_DEFAULT 0 177 178 /* 179 * The largest allocation size is 4MB. 180 */ 181 #define VM_NFREEORDER 11 182 183 /* 184 * Disable superpage reservations. 185 */ 186 #ifndef VM_NRESERVLEVEL 187 #define VM_NRESERVLEVEL 0 188 #endif 189 190 #ifndef VM_INITIAL_PAGEIN 191 #define VM_INITIAL_PAGEIN 16 192 #endif 193 194 #ifndef SGROWSIZ 195 #define SGROWSIZ (128UL*1024) /* amount to grow stack */ 196 #endif 197 198 /* 199 * How many physical pages per kmem arena virtual page. 200 */ 201 #ifndef VM_KMEM_SIZE_SCALE 202 #define VM_KMEM_SIZE_SCALE (3) 203 #endif 204 205 /* 206 * Optional floor (in bytes) on the size of the kmem arena. 207 */ 208 #ifndef VM_KMEM_SIZE_MIN 209 #define VM_KMEM_SIZE_MIN (12 * 1024 * 1024) 210 #endif 211 212 /* 213 * Optional ceiling (in bytes) on the size of the kmem arena: 40% of the 214 * usable KVA space. 215 */ 216 #ifndef VM_KMEM_SIZE_MAX 217 #define VM_KMEM_SIZE_MAX ((VM_MAX_SAFE_KERNEL_ADDRESS - \ 218 VM_MIN_KERNEL_ADDRESS + 1) * 2 / 5) 219 #endif 220 221 #define ZERO_REGION_SIZE (64 * 1024) /* 64KB */ 222 223 /* 224 * On 32-bit OEA, the only purpose for which sf_buf is used is to implement 225 * an opaque pointer required by the machine-independent parts of the kernel. 226 * That pointer references the vm_page that is "mapped" by the sf_buf. The 227 * actual mapping is provided by the direct virtual-to-physical mapping. 228 * 229 * On OEA64 and Book-E, we need to do something a little more complicated. Use 230 * the runtime-detected hw_direct_map to pick between the two cases. Our 231 * friends in vm_machdep.c will do the same to ensure nothing gets confused. 232 */ 233 #define SFBUF 234 #define SFBUF_NOMD 235 #define SFBUF_OPTIONAL_DIRECT_MAP hw_direct_map 236 #define SFBUF_PHYS_DMAP(x) (x) 237 238 #endif /* _MACHINE_VMPARAM_H_ */ 239