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 #ifdef AIM 87 #define VM_MAXUSER_ADDRESS (0xfffffffffffff000UL) 88 #else 89 #define VM_MAXUSER_ADDRESS (0x7ffffffffffff000UL) 90 #endif 91 #define VM_MAX_ADDRESS (0xffffffffffffffffUL) 92 #else 93 #define VM_MIN_ADDRESS ((vm_offset_t)0) 94 #define VM_MAXUSER_ADDRESS VM_MAXUSER_ADDRESS32 95 #define VM_MAX_ADDRESS ((vm_offset_t)0xffffffff) 96 #endif 97 #define SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE) 98 #else /* LOCORE */ 99 #ifdef BOOKE 100 #define VM_MIN_ADDRESS 0 101 #ifdef __powerpc64__ 102 #define VM_MAXUSER_ADDRESS 0x7ffffffffffff000 103 #else 104 #define VM_MAXUSER_ADDRESS 0x7ffff000 105 #endif 106 #endif 107 #endif /* LOCORE */ 108 109 #define FREEBSD32_SHAREDPAGE (VM_MAXUSER_ADDRESS32 - PAGE_SIZE) 110 #define FREEBSD32_USRSTACK FREEBSD32_SHAREDPAGE 111 112 #ifdef __powerpc64__ 113 #define VM_MIN_KERNEL_ADDRESS 0xc000000000000000UL 114 #define VM_MAX_KERNEL_ADDRESS 0xc0000001c7ffffffUL 115 #define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS 116 #endif 117 118 #ifdef AIM 119 #define KERNBASE 0x00100100UL /* start of kernel virtual */ 120 121 #ifndef __powerpc64__ 122 #define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)KERNEL_SR << ADDR_SR_SHFT) 123 #define VM_MAX_SAFE_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 2*SEGMENT_LENGTH -1) 124 #define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 3*SEGMENT_LENGTH - 1) 125 #endif 126 127 /* 128 * Use the direct-mapped BAT registers for UMA small allocs. This 129 * takes pressure off the small amount of available KVA. 130 */ 131 #define UMA_MD_SMALL_ALLOC 132 133 #else /* Book-E */ 134 135 #ifdef __powerpc64__ 136 #ifndef LOCORE 137 #define KERNBASE 0xc000000000000000UL /* start of kernel virtual */ 138 #else 139 #define KERNBASE 0xc000000000000000 /* start of kernel virtual */ 140 #endif 141 #else 142 #define KERNBASE 0xc0000000 /* start of kernel virtual */ 143 144 #define VM_MIN_KERNEL_ADDRESS KERNBASE 145 #define VM_MAX_KERNEL_ADDRESS 0xffffefff 146 #define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS 147 #endif 148 149 #endif /* AIM/E500 */ 150 151 #if !defined(LOCORE) 152 struct pmap_physseg { 153 struct pv_entry *pvent; 154 char *attrs; 155 }; 156 #endif 157 158 #define VM_PHYSSEG_MAX 16 /* 1? */ 159 160 /* 161 * The physical address space is densely populated on 32-bit systems, 162 * but may not be on 64-bit ones. 163 */ 164 #ifdef __powerpc64__ 165 #define VM_PHYSSEG_SPARSE 166 #else 167 #define VM_PHYSSEG_DENSE 168 #endif 169 170 /* 171 * Create two free page pools: VM_FREEPOOL_DEFAULT is the default pool 172 * from which physical pages are allocated and VM_FREEPOOL_DIRECT is 173 * the pool from which physical pages for small UMA objects are 174 * allocated. 175 */ 176 #define VM_NFREEPOOL 2 177 #define VM_FREEPOOL_DEFAULT 0 178 #define VM_FREEPOOL_DIRECT 1 179 180 /* 181 * Create one free page list. 182 */ 183 #define VM_NFREELIST 1 184 #define VM_FREELIST_DEFAULT 0 185 186 /* 187 * The largest allocation size is 4MB. 188 */ 189 #define VM_NFREEORDER 11 190 191 /* 192 * Disable superpage reservations. 193 */ 194 #ifndef VM_NRESERVLEVEL 195 #define VM_NRESERVLEVEL 0 196 #endif 197 198 #ifndef VM_INITIAL_PAGEIN 199 #define VM_INITIAL_PAGEIN 16 200 #endif 201 202 #ifndef SGROWSIZ 203 #define SGROWSIZ (128UL*1024) /* amount to grow stack */ 204 #endif 205 206 /* 207 * How many physical pages per kmem arena virtual page. 208 */ 209 #ifndef VM_KMEM_SIZE_SCALE 210 #define VM_KMEM_SIZE_SCALE (3) 211 #endif 212 213 /* 214 * Optional floor (in bytes) on the size of the kmem arena. 215 */ 216 #ifndef VM_KMEM_SIZE_MIN 217 #define VM_KMEM_SIZE_MIN (12 * 1024 * 1024) 218 #endif 219 220 /* 221 * Optional ceiling (in bytes) on the size of the kmem arena: 40% of the 222 * usable KVA space. 223 */ 224 #ifndef VM_KMEM_SIZE_MAX 225 #define VM_KMEM_SIZE_MAX ((VM_MAX_SAFE_KERNEL_ADDRESS - \ 226 VM_MIN_KERNEL_ADDRESS + 1) * 2 / 5) 227 #endif 228 229 #define ZERO_REGION_SIZE (64 * 1024) /* 64KB */ 230 231 /* 232 * On 32-bit OEA, the only purpose for which sf_buf is used is to implement 233 * an opaque pointer required by the machine-independent parts of the kernel. 234 * That pointer references the vm_page that is "mapped" by the sf_buf. The 235 * actual mapping is provided by the direct virtual-to-physical mapping. 236 * 237 * On OEA64 and Book-E, we need to do something a little more complicated. Use 238 * the runtime-detected hw_direct_map to pick between the two cases. Our 239 * friends in vm_machdep.c will do the same to ensure nothing gets confused. 240 */ 241 #define SFBUF 242 #define SFBUF_NOMD 243 244 /* 245 * We (usually) have a direct map of all physical memory, so provide 246 * a macro to use to get the kernel VA address for a given PA. Returns 247 * 0 if the direct map is unavailable. The location of the direct map 248 * may not be 1:1 in future, so use of the macro is recommended. 249 */ 250 #ifdef __powerpc64__ 251 #define DMAP_BASE_ADDRESS 0x0000000000000000UL 252 #else 253 #define DMAP_BASE_ADDRESS 0x00000000UL 254 #endif 255 256 #define PMAP_HAS_DMAP (hw_direct_map) 257 #define PHYS_TO_DMAP(x) ({ \ 258 KASSERT(hw_direct_map, ("Direct map not provided by PMAP")); \ 259 (x) | DMAP_BASE_ADDRESS; }) 260 #define DMAP_TO_PHYS(x) ({ \ 261 KASSERT(hw_direct_map, ("Direct map not provided by PMAP")); \ 262 (x) &~ DMAP_BASE_ADDRESS; }) 263 264 #endif /* _MACHINE_VMPARAM_H_ */ 265