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