vmparam.h revision 1.10
1 /*- 2 * Copyright (c) 2001 The NetBSD Foundation, Inc. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to The NetBSD Foundation 6 * by Matt Thomas <matt (at) 3am-softwre.com> of Allegro Networks, Inc. 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 the NetBSD 19 * Foundation, Inc. and its contributors. 20 * 4. Neither the name of The NetBSD Foundation nor the names of its 21 * contributors may be used to endorse or promote products derived 22 * from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 25 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 26 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34 * POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37 #ifndef _POWERPC_OEA_VMPARAM_H_ 38 #define _POWERPC_OEA_VMPARAM_H_ 39 40 #include <sys/queue.h> 41 42 /* 43 * Most of the definitions in this can be overriden by a machine-specific 44 * vmparam.h if required. Otherwise a port can just include this file 45 * get the right thing to happen. 46 */ 47 48 /* 49 * OEA processors have 4K pages. Override the PAGE_* definitions 50 * to be compile-time constants. 51 */ 52 #define PAGE_SHIFT 12 53 #define PAGE_SIZE (1 << PAGE_SHIFT) 54 #define PAGE_MASK (PAGE_SIZE - 1) 55 56 #ifndef USRSTACK 57 #define USRSTACK VM_MAXUSER_ADDRESS 58 #endif 59 60 #ifndef USRSTACK32 61 #define USRSTACK32 ((uint32_t)VM_MAXUSER_ADDRESS) 62 #endif 63 64 #ifndef MAXTSIZ 65 #define MAXTSIZ (64*1024*1024) /* maximum text size */ 66 #endif 67 68 #ifndef MAXDSIZ 69 #define MAXDSIZ (1024*1024*1024) /* maximum data size */ 70 #endif 71 72 #ifndef MAXSSIZ 73 #define MAXSSIZ (32*1024*1024) /* maximum stack size */ 74 #endif 75 76 #ifndef DFLDSIZ 77 #define DFLDSIZ (128*1024*1024) /* default data size */ 78 #endif 79 80 #ifndef DFLSSIZ 81 #define DFLSSIZ (2*1024*1024) /* default stack size */ 82 #endif 83 84 /* 85 * Default maximum amount of shared memory pages 86 */ 87 #ifndef SHMMAXPGS 88 #define SHMMAXPGS 1024 89 #endif 90 91 /* 92 * Default number of pages in the user raw I/O map. 93 */ 94 #ifndef USRIOSIZE 95 #define USRIOSIZE 1024 96 #endif 97 98 /* 99 * The number of seconds for a process to be blocked before being 100 * considered very swappable. 101 */ 102 #ifndef MAXSLP 103 #define MAXSLP 20 104 #endif 105 106 /* 107 * Segment handling stuff 108 */ 109 #define SEGMENT_LENGTH ( 0x10000000L) 110 #define SEGMENT_MASK (~0x0fffffffL) 111 112 /* 113 * Macros to manipulate VSIDs 114 */ 115 #if 0 116 /* 117 * Move the SR# to the top bits to make the lower bits entirely random 118 * so to give better PTE distribution. 119 */ 120 #define VSID__KEYSHFT (SR_VSID_WIDTH - SR_KEY_LEN) 121 #define VSID_SR_INCREMENT ((1L << VSID__KEYSHFT) - 1) 122 #define VSID__HASHMASK (VSID_SR_INCREMENT - 1) 123 #define VSID_MAKE(sr, hash) \ 124 (( \ 125 (((sr) << VSID__KEYSHFT) | ((hash) & VSID__HASMASK)) 126 << SR_VSID_SHFT) & SR_VSID) 127 #define VSID_TO_SR(vsid) \ 128 (((vsid) & SR_VSID) >> (SR_VSID_SHFT + VSID__KEYSHFT)) 129 #define VSID_TO_HASH(vsid) \ 130 (((vsid) & SR_VSID) >> SR_VSID_SHFT) & VSID__HASHMASK) 131 #else 132 #define VSID__HASHSHFT (SR_KEY_LEN) 133 #define VSID_SR_INCREMENT (1L << 0) 134 #define VSID__KEYMASK ((1L << VSID__HASHSHFT) - 1) 135 #define VSID_MAKE(sr, hash) \ 136 (( \ 137 (((hash) << VSID__HASHSHFT) | ((sr) & VSID__KEYMASK)) \ 138 << SR_VSID_SHFT) & SR_VSID) 139 #define VSID_TO_SR(vsid) \ 140 (((vsid) >> SR_VSID_SHFT) & VSID__KEYMASK) 141 #define VSID_TO_HASH(vsid) \ 142 (((vsid) & SR_VSID) >> (SR_VSID_SHFT + VSID__HASHSHFT)) 143 #endif 144 145 /* 146 * Fixed segments 147 */ 148 #ifndef USER_SR 149 #define USER_SR 12 150 #endif 151 #ifndef KERNEL_SR 152 #define KERNEL_SR 13 153 #endif 154 #ifndef KERNEL2_SR 155 #define KERNEL2_SR 14 156 #endif 157 #define KERNEL2_SEGMENT VSID_MAKE(KERNEL2_SR, KERNEL_VSIDBITS) 158 #define KERNEL_VSIDBITS 0xfffff 159 #define PHYSMAP_VSIDBITS 0xffffe 160 #define PHYSMAPN_SEGMENT(s) VSID_MAKE(s, PHYSMAP_VSIDBITS) 161 #define KERNEL_SEGMENT VSID_MAKE(KERNEL_SR, KERNEL_VSIDBITS) 162 #define KERNELN_SEGMENT(s) VSID_MAKE(s, KERNEL_VSIDBITS) 163 /* XXXSL: need something here that will never be mapped */ 164 #define EMPTY_SEGMENT VSID_MAKE(0, 0xffffe) 165 #define USER_ADDR ((void *)(USER_SR << ADDR_SR_SHFT)) 166 167 /* 168 * Some system constants 169 */ 170 #ifndef NPMAPS 171 #define NPMAPS 32768 /* Number of pmaps in system */ 172 #endif 173 174 #define VM_MIN_ADDRESS ((vaddr_t) 0) 175 #define VM_MAXUSER_ADDRESS ((vaddr_t) ~0xfffL) 176 #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 177 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t) (KERNEL_SR << ADDR_SR_SHFT)) 178 #define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 2*SEGMENT_LENGTH) 179 180 /* 181 * The address to which unspecified mapping requests default 182 * Put the stack in it's own segment and start mmaping at the 183 * top of the next lower segment. 184 */ 185 #ifdef _KERNEL_OPT 186 #include "opt_uvm.h" 187 #endif 188 #define __USE_TOPDOWN_VM 189 #define VM_DEFAULT_ADDRESS(da, sz) \ 190 (((VM_MAXUSER_ADDRESS - MAXSSIZ) & SEGMENT_MASK) - round_page(sz)) 191 192 #ifndef VM_PHYSSEG_MAX 193 #define VM_PHYSSEG_MAX 16 194 #endif 195 #define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST 196 #define VM_PHYSSEG_NOADD 197 198 #ifndef VM_PHYS_SIZE 199 #define VM_PHYS_SIZE (USRIOSIZE * PAGE_SIZE) 200 #endif 201 202 #ifndef VM_MAX_KERNEL_BUF 203 #define VM_MAX_KERNEL_BUF (SEGMENT_LENGTH * 3 / 4) 204 #endif 205 206 #define VM_NFREELIST 16 /* 16 distinct memory segments */ 207 #define VM_FREELIST_DEFAULT 0 208 #define VM_FREELIST_FIRST256 1 209 #define VM_FREELIST_FIRST16 2 210 #define VM_FREELIST_MAX 3 211 212 #ifndef _LOCORE 213 214 LIST_HEAD(pvo_head, pvo_entry); 215 216 #if __NetBSD_Version__ > 105180000 217 #define __HAVE_VM_PAGE_MD 218 219 struct vm_page_md { 220 struct pvo_head mdpg_pvoh; 221 unsigned int mdpg_attrs; 222 }; 223 224 #define VM_MDPAGE_INIT(pg) do { \ 225 LIST_INIT(&(pg)->mdpage.mdpg_pvoh); \ 226 (pg)->mdpage.mdpg_attrs = 0; \ 227 } while (/*CONSTCOND*/0) 228 229 #else 230 231 #define __HAVE_PMAP_PHYSSEG 232 233 struct pmap_physseg { 234 struct pvo_head *pvoh; 235 char *attrs; 236 }; 237 238 #endif 239 240 #endif /* _LOCORE */ 241 242 #endif /* _POWERPC_OEA_VMPARAM_H_ */ 243
Indexes created Wed Sep 24 15:09:51 GMT 2025