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 #ifndef LOCORE 110 #define VM_MIN_KERNEL_ADDRESS 0xe000000000000000UL 111 #define VM_MAX_KERNEL_ADDRESS 0xe0000007ffffffffUL 112 #else 113 #define VM_MIN_KERNEL_ADDRESS 0xe000000000000000 114 #define VM_MAX_KERNEL_ADDRESS 0xe0000007ffffffff 115 #endif 116 #define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS 117 #endif 118 119 #ifdef AIM 120 #define KERNBASE 0x00100100 /* start of kernel virtual */ 121 122 #ifndef __powerpc64__ 123 #define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)KERNEL_SR << ADDR_SR_SHFT) 124 #define VM_MAX_SAFE_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 2*SEGMENT_LENGTH -1) 125 #define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 3*SEGMENT_LENGTH - 1) 126 #endif 127 128 /* 129 * Use the direct-mapped BAT registers for UMA small allocs. This 130 * takes pressure off the small amount of available KVA. 131 */ 132 #define UMA_MD_SMALL_ALLOC 133 134 #else /* Book-E */ 135 136 /* Use the direct map for UMA small allocs on powerpc64. */ 137 #ifdef __powerpc64__ 138 #define UMA_MD_SMALL_ALLOC 139 #endif 140 141 #define KERNBASE 0x04000100 /* start of kernel physical */ 142 #ifndef __powerpc64__ 143 #define VM_MIN_KERNEL_ADDRESS 0xc0000000 144 #define VM_MAX_KERNEL_ADDRESS 0xffffefff 145 #define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS 146 #endif 147 148 #endif /* AIM/E500 */ 149 150 #if !defined(LOCORE) 151 struct pmap_physseg { 152 struct pv_entry *pvent; 153 char *attrs; 154 }; 155 #endif 156 157 #define VM_PHYSSEG_MAX 16 /* 1? */ 158 159 /* 160 * The physical address space is densely populated on 32-bit systems, 161 * but may not be on 64-bit ones. 162 */ 163 #ifdef __powerpc64__ 164 #define VM_PHYSSEG_SPARSE 165 #else 166 #define VM_PHYSSEG_DENSE 167 #endif 168 169 /* 170 * Create two free page pools: VM_FREEPOOL_DEFAULT is the default pool 171 * from which physical pages are allocated and VM_FREEPOOL_DIRECT is 172 * the pool from which physical pages for small UMA objects are 173 * allocated. 174 */ 175 #define VM_NFREEPOOL 2 176 #define VM_FREEPOOL_DEFAULT 0 177 #define VM_FREEPOOL_DIRECT 1 178 179 /* 180 * Create one free page list. 181 */ 182 #define VM_NFREELIST 1 183 #define VM_FREELIST_DEFAULT 0 184 185 /* 186 * The largest allocation size is 4MB. 187 */ 188 #define VM_NFREEORDER 11 189 190 /* 191 * Disable superpage reservations. 192 */ 193 #ifndef VM_NRESERVLEVEL 194 #define VM_NRESERVLEVEL 0 195 #endif 196 197 #ifndef VM_INITIAL_PAGEIN 198 #define VM_INITIAL_PAGEIN 16 199 #endif 200 201 #ifndef SGROWSIZ 202 #define SGROWSIZ (128UL*1024) /* amount to grow stack */ 203 #endif 204 205 /* 206 * How many physical pages per kmem arena virtual page. 207 */ 208 #ifndef VM_KMEM_SIZE_SCALE 209 #define VM_KMEM_SIZE_SCALE (3) 210 #endif 211 212 /* 213 * Optional floor (in bytes) on the size of the kmem arena. 214 */ 215 #ifndef VM_KMEM_SIZE_MIN 216 #define VM_KMEM_SIZE_MIN (12 * 1024 * 1024) 217 #endif 218 219 /* 220 * Optional ceiling (in bytes) on the size of the kmem arena: 40% of the 221 * usable KVA space. 222 */ 223 #ifndef VM_KMEM_SIZE_MAX 224 #define VM_KMEM_SIZE_MAX ((VM_MAX_SAFE_KERNEL_ADDRESS - \ 225 VM_MIN_KERNEL_ADDRESS + 1) * 2 / 5) 226 #endif 227 228 #define ZERO_REGION_SIZE (64 * 1024) /* 64KB */ 229 230 /* 231 * On 32-bit OEA, the only purpose for which sf_buf is used is to implement 232 * an opaque pointer required by the machine-independent parts of the kernel. 233 * That pointer references the vm_page that is "mapped" by the sf_buf. The 234 * actual mapping is provided by the direct virtual-to-physical mapping. 235 * 236 * On OEA64 and Book-E, we need to do something a little more complicated. Use 237 * the runtime-detected hw_direct_map to pick between the two cases. Our 238 * friends in vm_machdep.c will do the same to ensure nothing gets confused. 239 */ 240 #define SFBUF 241 #define SFBUF_NOMD 242 243 /* 244 * We (usually) have a direct map of all physical memory, so provide 245 * a macro to use to get the kernel VA address for a given PA. Check the 246 * value of PMAP_HAS_PMAP before using. 247 */ 248 #ifndef LOCORE 249 #ifdef __powerpc64__ 250 #define DMAP_BASE_ADDRESS 0xc000000000000000UL 251 #define DMAP_MAX_ADDRESS 0xcfffffffffffffffUL 252 #else 253 #define DMAP_BASE_ADDRESS 0x00000000UL 254 #define DMAP_MAX_ADDRESS 0xbfffffffUL 255 #endif 256 #endif 257 258 #define PMAP_HAS_DMAP (hw_direct_map) 259 #define PHYS_TO_DMAP(x) ({ \ 260 KASSERT(hw_direct_map, ("Direct map not provided by PMAP")); \ 261 (x) | DMAP_BASE_ADDRESS; }) 262 #define DMAP_TO_PHYS(x) ({ \ 263 KASSERT(hw_direct_map, ("Direct map not provided by PMAP")); \ 264 (x) &~ DMAP_BASE_ADDRESS; }) 265 266 #endif /* _MACHINE_VMPARAM_H_ */ 267