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 #ifndef LOCORE 41 #include <machine/md_var.h> 42 #endif 43 44 #define USRSTACK SHAREDPAGE 45 46 #ifndef MAXTSIZ 47 #define MAXTSIZ (1*1024*1024*1024) /* max text size */ 48 #endif 49 50 #ifndef DFLDSIZ 51 #define DFLDSIZ (128*1024*1024) /* default data size */ 52 #endif 53 54 #ifndef MAXDSIZ 55 #ifdef __powerpc64__ 56 #define MAXDSIZ (32UL*1024*1024*1024) /* max data size */ 57 #else 58 #define MAXDSIZ (1*1024*1024*1024) /* max data size */ 59 #endif 60 #endif 61 62 #ifndef DFLSSIZ 63 #define DFLSSIZ (8*1024*1024) /* default stack size */ 64 #endif 65 66 #ifndef MAXSSIZ 67 #ifdef __powerpc64__ 68 #define MAXSSIZ (512*1024*1024) /* max stack size */ 69 #else 70 #define MAXSSIZ (64*1024*1024) /* max stack size */ 71 #endif 72 #endif 73 74 #ifdef AIM 75 #define VM_MAXUSER_ADDRESS32 ((vm_offset_t)0xfffff000) 76 #else 77 #define VM_MAXUSER_ADDRESS32 ((vm_offset_t)0x7ffff000) 78 #endif 79 80 /* 81 * Would like to have MAX addresses = 0, but this doesn't (currently) work 82 */ 83 #if !defined(LOCORE) 84 #ifdef __powerpc64__ 85 #define VM_MIN_ADDRESS (0x0000000000000000UL) 86 #define VM_MAXUSER_ADDRESS (0x3ffffffffffff000UL) 87 #define VM_MAX_ADDRESS (0xffffffffffffffffUL) 88 #else 89 #define VM_MIN_ADDRESS ((vm_offset_t)0) 90 #define VM_MAXUSER_ADDRESS VM_MAXUSER_ADDRESS32 91 #define VM_MAX_ADDRESS ((vm_offset_t)0xffffffff) 92 #endif 93 #define SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE) 94 #else /* LOCORE */ 95 #ifdef BOOKE 96 #define VM_MIN_ADDRESS 0 97 #ifdef __powerpc64__ 98 #define VM_MAXUSER_ADDRESS 0x3ffffffffffff000 99 #else 100 #define VM_MAXUSER_ADDRESS 0x7ffff000 101 #endif 102 #endif 103 #endif /* LOCORE */ 104 105 #define FREEBSD32_SHAREDPAGE (VM_MAXUSER_ADDRESS32 - PAGE_SIZE) 106 #define FREEBSD32_USRSTACK FREEBSD32_SHAREDPAGE 107 108 #ifdef __powerpc64__ 109 #define VM_MIN_KERNEL_ADDRESS 0xe000000000000000UL 110 #define VM_MAX_KERNEL_ADDRESS 0xe0000001c7ffffffUL 111 #define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS 112 #endif 113 114 #ifdef AIM 115 #define KERNBASE 0x00100100UL /* start of kernel virtual */ 116 117 #ifndef __powerpc64__ 118 #define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)KERNEL_SR << ADDR_SR_SHFT) 119 #define VM_MAX_SAFE_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 2*SEGMENT_LENGTH -1) 120 #define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 3*SEGMENT_LENGTH - 1) 121 #endif 122 123 /* 124 * Use the direct-mapped BAT registers for UMA small allocs. This 125 * takes pressure off the small amount of available KVA. 126 */ 127 #define UMA_MD_SMALL_ALLOC 128 129 #else /* Book-E */ 130 131 #ifdef __powerpc64__ 132 #ifndef LOCORE 133 #define KERNBASE 0xe000000000000100UL /* start of kernel virtual */ 134 #else 135 #define KERNBASE 0xe000000000000100 /* start of kernel virtual */ 136 #endif 137 #else 138 #define KERNBASE 0xc0000000 /* start of kernel virtual */ 139 140 #define VM_MIN_KERNEL_ADDRESS KERNBASE 141 #define VM_MAX_KERNEL_ADDRESS 0xffffefff 142 #define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS 143 #endif 144 145 #endif /* AIM/E500 */ 146 147 #if !defined(LOCORE) 148 struct pmap_physseg { 149 struct pv_entry *pvent; 150 char *attrs; 151 }; 152 #endif 153 154 #define VM_PHYSSEG_MAX 16 /* 1? */ 155 156 /* 157 * The physical address space is densely populated on 32-bit systems, 158 * but may not be on 64-bit ones. 159 */ 160 #ifdef __powerpc64__ 161 #define VM_PHYSSEG_SPARSE 162 #else 163 #define VM_PHYSSEG_DENSE 164 #endif 165 166 /* 167 * Create two free page pools: VM_FREEPOOL_DEFAULT is the default pool 168 * from which physical pages are allocated and VM_FREEPOOL_DIRECT is 169 * the pool from which physical pages for small UMA objects are 170 * allocated. 171 */ 172 #define VM_NFREEPOOL 2 173 #define VM_FREEPOOL_DEFAULT 0 174 #define VM_FREEPOOL_DIRECT 1 175 176 /* 177 * Create one free page list. 178 */ 179 #define VM_NFREELIST 1 180 #define VM_FREELIST_DEFAULT 0 181 182 /* 183 * The largest allocation size is 4MB. 184 */ 185 #define VM_NFREEORDER 11 186 187 /* 188 * Disable superpage reservations. 189 */ 190 #ifndef VM_NRESERVLEVEL 191 #define VM_NRESERVLEVEL 0 192 #endif 193 194 #ifndef VM_INITIAL_PAGEIN 195 #define VM_INITIAL_PAGEIN 16 196 #endif 197 198 #ifndef SGROWSIZ 199 #define SGROWSIZ (128UL*1024) /* amount to grow stack */ 200 #endif 201 202 /* 203 * How many physical pages per kmem arena virtual page. 204 */ 205 #ifndef VM_KMEM_SIZE_SCALE 206 #define VM_KMEM_SIZE_SCALE (3) 207 #endif 208 209 /* 210 * Optional floor (in bytes) on the size of the kmem arena. 211 */ 212 #ifndef VM_KMEM_SIZE_MIN 213 #define VM_KMEM_SIZE_MIN (12 * 1024 * 1024) 214 #endif 215 216 /* 217 * Optional ceiling (in bytes) on the size of the kmem arena: 40% of the 218 * usable KVA space. 219 */ 220 #ifndef VM_KMEM_SIZE_MAX 221 #define VM_KMEM_SIZE_MAX ((VM_MAX_SAFE_KERNEL_ADDRESS - \ 222 VM_MIN_KERNEL_ADDRESS + 1) * 2 / 5) 223 #endif 224 225 #define ZERO_REGION_SIZE (64 * 1024) /* 64KB */ 226 227 /* 228 * On 32-bit OEA, the only purpose for which sf_buf is used is to implement 229 * an opaque pointer required by the machine-independent parts of the kernel. 230 * That pointer references the vm_page that is "mapped" by the sf_buf. The 231 * actual mapping is provided by the direct virtual-to-physical mapping. 232 * 233 * On OEA64 and Book-E, we need to do something a little more complicated. Use 234 * the runtime-detected hw_direct_map to pick between the two cases. Our 235 * friends in vm_machdep.c will do the same to ensure nothing gets confused. 236 */ 237 #define SFBUF 238 #define SFBUF_NOMD 239 240 /* 241 * We (usually) have a direct map of all physical memory, so provide 242 * a macro to use to get the kernel VA address for a given PA. Check the 243 * value of PMAP_HAS_PMAP before using. 244 */ 245 #ifndef LOCORE 246 #ifdef __powerpc64__ 247 #define DMAP_BASE_ADDRESS 0xc000000000000000UL 248 #define DMAP_MAX_ADDRESS 0xcfffffffffffffffUL 249 #else 250 #define DMAP_BASE_ADDRESS 0x00000000UL 251 #define DMAP_MAX_ADDRESS 0xbfffffffUL 252 #endif 253 #endif 254 255 #define PMAP_HAS_DMAP (hw_direct_map) 256 #define PHYS_TO_DMAP(x) ({ \ 257 KASSERT(hw_direct_map, ("Direct map not provided by PMAP")); \ 258 (x) | DMAP_BASE_ADDRESS; }) 259 #define DMAP_TO_PHYS(x) ({ \ 260 KASSERT(hw_direct_map, ("Direct map not provided by PMAP")); \ 261 (x) &~ DMAP_BASE_ADDRESS; }) 262 263 #endif /* _MACHINE_VMPARAM_H_ */ 264