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 #define VM_MAXUSER_ADDRESS (0xfffffffffffff000UL) 73 #define VM_MAX_ADDRESS (0xffffffffffffffffUL) 74 #else 75 #define VM_MIN_ADDRESS ((vm_offset_t)0) 76 #define VM_MAXUSER_ADDRESS VM_MAXUSER_ADDRESS32 77 #define VM_MAX_ADDRESS ((vm_offset_t)0xffffffff) 78 #endif 79 #define SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE) 80 #else /* LOCORE */ 81 #if !defined(__powerpc64__) && defined(BOOKE) 82 #define VM_MIN_ADDRESS 0 83 #define VM_MAXUSER_ADDRESS 0x7ffff000 84 #endif 85 #endif /* LOCORE */ 86 87 #define FREEBSD32_SHAREDPAGE (VM_MAXUSER_ADDRESS32 - PAGE_SIZE) 88 #define FREEBSD32_USRSTACK FREEBSD32_SHAREDPAGE 89 90 #ifdef AIM 91 #define KERNBASE 0x00100000UL /* start of kernel virtual */ 92 93 #ifdef __powerpc64__ 94 #define VM_MIN_KERNEL_ADDRESS 0xc000000000000000UL 95 #define VM_MAX_KERNEL_ADDRESS 0xc0000001c7ffffffUL 96 #define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS 97 #else 98 #define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)KERNEL_SR << ADDR_SR_SHFT) 99 #define VM_MAX_SAFE_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 2*SEGMENT_LENGTH -1) 100 #define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 3*SEGMENT_LENGTH - 1) 101 #endif 102 103 /* 104 * Use the direct-mapped BAT registers for UMA small allocs. This 105 * takes pressure off the small amount of available KVA. 106 */ 107 #define UMA_MD_SMALL_ALLOC 108 109 #else /* Book-E */ 110 111 #define KERNBASE 0xc0000000 /* start of kernel virtual */ 112 113 #define VM_MIN_KERNEL_ADDRESS KERNBASE 114 #define VM_MAX_KERNEL_ADDRESS 0xf8000000 115 #define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS 116 117 #endif /* AIM/E500 */ 118 119 #if !defined(LOCORE) 120 struct pmap_physseg { 121 struct pv_entry *pvent; 122 char *attrs; 123 }; 124 #endif 125 126 #define VM_PHYSSEG_MAX 16 /* 1? */ 127 128 /* 129 * The physical address space is densely populated on 32-bit systems, 130 * but may not be on 64-bit ones. 131 */ 132 #ifdef __powerpc64__ 133 #define VM_PHYSSEG_SPARSE 134 #else 135 #define VM_PHYSSEG_DENSE 136 #endif 137 138 /* 139 * Create two free page pools: VM_FREEPOOL_DEFAULT is the default pool 140 * from which physical pages are allocated and VM_FREEPOOL_DIRECT is 141 * the pool from which physical pages for small UMA objects are 142 * allocated. 143 */ 144 #define VM_NFREEPOOL 2 145 #define VM_FREEPOOL_DEFAULT 0 146 #define VM_FREEPOOL_DIRECT 1 147 148 /* 149 * Create one free page list. 150 */ 151 #define VM_NFREELIST 1 152 #define VM_FREELIST_DEFAULT 0 153 154 /* 155 * The largest allocation size is 4MB. 156 */ 157 #define VM_NFREEORDER 11 158 159 /* 160 * Disable superpage reservations. 161 */ 162 #ifndef VM_NRESERVLEVEL 163 #define VM_NRESERVLEVEL 0 164 #endif 165 166 #ifndef VM_INITIAL_PAGEIN 167 #define VM_INITIAL_PAGEIN 16 168 #endif 169 170 #ifndef SGROWSIZ 171 #define SGROWSIZ (128UL*1024) /* amount to grow stack */ 172 #endif 173 174 /* 175 * How many physical pages per kmem arena virtual page. 176 */ 177 #ifndef VM_KMEM_SIZE_SCALE 178 #define VM_KMEM_SIZE_SCALE (3) 179 #endif 180 181 /* 182 * Optional floor (in bytes) on the size of the kmem arena. 183 */ 184 #ifndef VM_KMEM_SIZE_MIN 185 #define VM_KMEM_SIZE_MIN (12 * 1024 * 1024) 186 #endif 187 188 /* 189 * Optional ceiling (in bytes) on the size of the kmem arena: 40% of the 190 * usable KVA space. 191 */ 192 #ifndef VM_KMEM_SIZE_MAX 193 #define VM_KMEM_SIZE_MAX ((VM_MAX_SAFE_KERNEL_ADDRESS - \ 194 VM_MIN_KERNEL_ADDRESS + 1) * 2 / 5) 195 #endif 196 197 #define ZERO_REGION_SIZE (64 * 1024) /* 64KB */ 198 199 /* 200 * On 32-bit OEA, the only purpose for which sf_buf is used is to implement 201 * an opaque pointer required by the machine-independent parts of the kernel. 202 * That pointer references the vm_page that is "mapped" by the sf_buf. The 203 * actual mapping is provided by the direct virtual-to-physical mapping. 204 * 205 * On OEA64 and Book-E, we need to do something a little more complicated. Use 206 * the runtime-detected hw_direct_map to pick between the two cases. Our 207 * friends in vm_machdep.c will do the same to ensure nothing gets confused. 208 */ 209 #define SFBUF 210 #define SFBUF_NOMD 211 #define SFBUF_OPTIONAL_DIRECT_MAP hw_direct_map 212 #define SFBUF_PHYS_DMAP(x) (x) 213 214 #endif /* _MACHINE_VMPARAM_H_ */ 215