vmparam.h revision 1.33
1 /* $NetBSD: vmparam.h,v 1.33 2003/08/07 16:26:46 agc Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * the Systems Programming Group of the University of Utah Computer 9 * Science Department. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: Utah $Hdr: vmparam.h 1.16 91/01/18$ 36 * 37 * @(#)vmparam.h 7.3 (Berkeley) 5/7/91 38 */ 39 /* 40 * Copyright (c) 1988 University of Utah. 41 * 42 * This code is derived from software contributed to Berkeley by 43 * the Systems Programming Group of the University of Utah Computer 44 * Science Department. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by the University of 57 * California, Berkeley and its contributors. 58 * 4. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * from: Utah $Hdr: vmparam.h 1.16 91/01/18$ 75 * 76 * @(#)vmparam.h 7.3 (Berkeley) 5/7/91 77 */ 78 #ifndef _MACHINE_VMPARAM_H_ 79 #define _MACHINE_VMPARAM_H_ 80 81 #include <machine/pte.h> 82 83 /* 84 * Machine dependent constants for HP300 85 */ 86 87 /* 88 * We use 8K pages on the Amiga. Override the PAGE_* definitions 89 * to be compie-time constants. 90 */ 91 #define PAGE_SHIFT 13 92 #define PAGE_SIZE (1 << PAGE_SHIFT) 93 #define PAGE_MASK (PAGE_SIZE - 1) 94 95 /* 96 * USRSTACK is the top (end) of the user stack. 97 * 98 * These are a mixture of i386, sun3 and hp settings.. 99 */ 100 101 /* Sun settings. Still hope, that I might get sun3 binaries to work... */ 102 #ifndef USRSTACK 103 #define USRSTACK 0x0E000000 104 #endif 105 #define KUSER_AREA (-UPAGES*PAGE_SIZE) 106 /* 107 * Virtual memory related constants, all in bytes 108 */ 109 110 #ifndef MAXTSIZ 111 #define MAXTSIZ (6*1024*1024) /* max text size */ 112 #endif 113 #ifndef DFLDSIZ 114 #define DFLDSIZ (32*1024*1024) /* initial data size limit */ 115 #endif 116 #ifndef MAXDSIZ 117 #define MAXDSIZ (128*1024*1024) /* max data size */ 118 #endif 119 #ifndef DFLSSIZ 120 #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ 121 #endif 122 #ifndef MAXSSIZ 123 #define MAXSSIZ (32*1024*1024) /* max stack size */ 124 #endif 125 126 /* 127 * Sizes of the system and user portions of the system page table. 128 */ 129 /* SYSPTSIZE IS SILLY; IT SHOULD BE COMPUTED AT BOOT TIME */ 130 #define SYSPTSIZE (2 * NPTEPG) /* 16mb */ 131 #define USRPTSIZE (1 * NPTEPG) /* 16mb */ 132 133 /* 134 * PTEs for mapping user space into the kernel for phyio operations. 135 * One page is enough to handle 16Mb of simultaneous raw IO operations. 136 */ 137 #ifndef USRIOSIZE 138 #define USRIOSIZE (1 * NPTEPG) /* 16mb */ 139 #endif 140 141 /* 142 * PTEs for system V style shared memory. 143 * This is basically slop for kmempt which we actually allocate (malloc) from. 144 */ 145 #ifndef SHMMAXPGS 146 #define SHMMAXPGS (1 * NPTEPG) /* 16mb */ 147 #endif 148 149 /* 150 * user/kernel map constants 151 */ 152 #define VM_MIN_ADDRESS ((vaddr_t)0) /* user min */ 153 #define VM_MAX_ADDRESS ((vaddr_t)(USRSTACK)) /* user max */ 154 #define VM_MAXUSER_ADDRESS ((vaddr_t)(VM_MAX_ADDRESS)) /* same */ 155 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0) 156 #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)(0-PAGE_SIZE)) 157 158 /* 159 * virtual sizes (bytes) for various kernel submaps 160 */ 161 #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 162 163 /* 164 * Our bootloader currently passes up to 16 segments (but this is variable) 165 * Normally, the biggest of them is used for the kernel, and the kernel 166 * segment is given to VM first. 167 */ 168 #define VM_PHYSSEG_MAX (16) 169 #define VM_PHYSSEG_STRAT VM_PSTRAT_RANDOM 170 #define VM_PHYSSEG_NOADD /* XXX this should be done right later */ 171 172 /* 173 * Allow supporting Zorro-II memory as lower priority: 174 * 175 * - DEFAULT for Zorro-III memory (presumably 32 bit) 176 * - ZORROII for Zorro-II memory (16 bit, Zorro-II DMA) 177 */ 178 179 #define VM_NFREELIST 2 180 #define VM_FREELIST_DEFAULT 0 181 #define VM_FREELIST_ZORROII 1 182 183 #define __HAVE_PMAP_PHYSSEG 184 185 /* 186 * pmap-specific data stored in the vm_physmem[] array. 187 */ 188 struct pmap_physseg { 189 struct pv_entry *pvent; /* pv table for this seg */ 190 char *attrs; /* page attributes for this seg */ 191 }; 192 193 /* 194 * number of kernel PT pages (initial only, can grow dynamically) 195 */ 196 #define VM_KERNEL_PT_PAGES ((vm_size_t)8) /* XXX: SYSPTSIZE */ 197 #endif /* !_MACHINE_VMPARAM_H_ */ 198
Indexes created Mon Sep 22 21:09:42 GMT 2025