vmparam.h revision 1.8
1 /* $NetBSD: vmparam.h,v 1.8 2005/03/26 05:12:34 fvdl Exp $ */ 2 3 /*- 4 * Copyright (c) 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 * William Jolitz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)vmparam.h 5.9 (Berkeley) 5/12/91 35 */ 36 37 #ifndef _VMPARAM_H_ 38 #define _VMPARAM_H_ 39 40 #include <sys/tree.h> 41 42 /* 43 * Machine dependent constants for 386. 44 */ 45 46 /* 47 * Page size on the amd64 s not variable in the traditional sense. 48 * We override the PAGE_* definitions to compile-time constants. 49 */ 50 #define PAGE_SHIFT 12 51 #define PAGE_SIZE (1 << PAGE_SHIFT) 52 #define PAGE_MASK (PAGE_SIZE - 1) 53 54 /* 55 * USRSTACK is the top (end) of the user stack. Immediately above the 56 * user stack resides the user structure, which is UPAGES long and contains 57 * the kernel stack. 58 * 59 * Immediately after the user structure is the page table map, and then 60 * kernal address space. 61 */ 62 #define USRSTACK VM_MAXUSER_ADDRESS 63 64 #define USRSTACK32 VM_MAXUSER_ADDRESS32 65 66 /* 67 * Virtual memory related constants, all in bytes 68 */ 69 #define MAXTSIZ (64*1024*1024) /* max text size */ 70 #ifndef DFLDSIZ 71 #define DFLDSIZ (256*1024*1024) /* initial data size limit */ 72 #endif 73 #ifndef MAXDSIZ 74 #define MAXDSIZ (8L*1024*1024*1024) /* max data size */ 75 #endif 76 #ifndef DFLSSIZ 77 #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ 78 #endif 79 #ifndef MAXSSIZ 80 #define MAXSSIZ (32*1024*1024) /* max stack size */ 81 #endif 82 83 /* 84 * 32bit memory related constants. 85 */ 86 87 #define MAXTSIZ32 (64*1024*1024) 88 #ifndef DFLDSIZ32 89 #define DFLDSIZ32 (256*1024*1024) /* initial data size limit */ 90 #endif 91 #ifndef MAXDSIZ32 92 #define MAXDSIZ32 (2L*1024*1024*1024) /* max data size */ 93 #endif 94 #ifndef DFLSSIZ32 95 #define DFLSSIZ32 (2*1024*1024) /* initial stack size limit */ 96 #endif 97 #ifndef MAXSSIZ32 98 #define MAXSSIZ32 (32*1024*1024) /* max stack size */ 99 #endif 100 101 /* 102 * Size of shared memory map 103 */ 104 #ifndef SHMMAXPGS 105 #define SHMMAXPGS 2048 106 #endif 107 108 /* 109 * Size of User Raw I/O map 110 */ 111 #define USRIOSIZE 300 112 113 /* 114 * Mach derived constants 115 */ 116 117 /* user/kernel map constants */ 118 #define VM_MIN_ADDRESS 0 119 #define VM_MAXUSER_ADDRESS 0x00007f8000000000 120 #define VM_MAX_ADDRESS 0x00007fbfdfeff000 121 #define VM_MIN_KERNEL_ADDRESS 0xffff800000000000 122 #define VM_MAX_KERNEL_ADDRESS 0xffff800100000000 123 124 #define VM_MAXUSER_ADDRESS32 0xfffff000 125 126 /* 127 * XXXfvdl we have plenty of KVM now, remove this. 128 */ 129 #ifndef VM_MAX_KERNEL_BUF 130 #define VM_MAX_KERNEL_BUF (384 * 1024 * 1024) 131 #endif 132 133 /* virtual sizes (bytes) for various kernel submaps */ 134 #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 135 136 #define VM_PHYSSEG_MAX 5 /* 1 "hole" + 4 free lists */ 137 #define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST 138 #define VM_PHYSSEG_NOADD /* can't add RAM after vm_mem_init */ 139 140 #define VM_NFREELIST 2 141 #define VM_FREELIST_DEFAULT 0 142 #define VM_FREELIST_FIRST16 1 143 144 #define __HAVE_PMAP_PHYSSEG 145 146 #define __HAVE_VM_PAGE_MD 147 #define VM_MDPAGE_INIT(pg) \ 148 memset(&(pg)->mdpage, 0, sizeof((pg)->mdpage)); \ 149 simple_lock_init(&(pg)->mdpage.mp_pvhead.pvh_lock); \ 150 SPLAY_INIT(&(pg)->mdpage.mp_pvhead.pvh_root); 151 152 struct pv_entry; 153 154 struct pv_head { 155 struct simplelock pvh_lock; /* locks every pv in this tree */ 156 SPLAY_HEAD(pvtree, pv_entry) pvh_root; 157 /* head of tree (locked by pvh_lock) */ 158 }; 159 160 struct vm_page_md { 161 struct pv_head mp_pvhead; 162 int mp_attrs; 163 }; 164 165 /* 166 * pmap specific data stored in the vm_physmem[] array 167 */ 168 struct pmap_physseg { 169 struct pv_head *pvhead; /* pv_head array */ 170 unsigned char *attrs; /* attrs array */ 171 }; 172 173 #endif /* _VMPARAM_H_ */ 174
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