vmparam.h revision 1.45.2.2
1 1.45.2.2 soren /* $NetBSD: vmparam.h,v 1.45.2.2 2001/11/15 18:06:15 soren Exp $ */ 2 1.45.2.2 soren 3 1.45.2.2 soren /*- 4 1.45.2.2 soren * Copyright (c) 1990 The Regents of the University of California. 5 1.45.2.2 soren * All rights reserved. 6 1.45.2.2 soren * 7 1.45.2.2 soren * This code is derived from software contributed to Berkeley by 8 1.45.2.2 soren * William Jolitz. 9 1.45.2.2 soren * 10 1.45.2.2 soren * Redistribution and use in source and binary forms, with or without 11 1.45.2.2 soren * modification, are permitted provided that the following conditions 12 1.45.2.2 soren * are met: 13 1.45.2.2 soren * 1. Redistributions of source code must retain the above copyright 14 1.45.2.2 soren * notice, this list of conditions and the following disclaimer. 15 1.45.2.2 soren * 2. Redistributions in binary form must reproduce the above copyright 16 1.45.2.2 soren * notice, this list of conditions and the following disclaimer in the 17 1.45.2.2 soren * documentation and/or other materials provided with the distribution. 18 1.45.2.2 soren * 3. All advertising materials mentioning features or use of this software 19 1.45.2.2 soren * must display the following acknowledgement: 20 1.45.2.2 soren * This product includes software developed by the University of 21 1.45.2.2 soren * California, Berkeley and its contributors. 22 1.45.2.2 soren * 4. Neither the name of the University nor the names of its contributors 23 1.45.2.2 soren * may be used to endorse or promote products derived from this software 24 1.45.2.2 soren * without specific prior written permission. 25 1.45.2.2 soren * 26 1.45.2.2 soren * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 1.45.2.2 soren * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 1.45.2.2 soren * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 1.45.2.2 soren * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 1.45.2.2 soren * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 1.45.2.2 soren * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 1.45.2.2 soren * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 1.45.2.2 soren * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 1.45.2.2 soren * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 1.45.2.2 soren * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 1.45.2.2 soren * SUCH DAMAGE. 37 1.45.2.2 soren * 38 1.45.2.2 soren * @(#)vmparam.h 5.9 (Berkeley) 5/12/91 39 1.45.2.2 soren */ 40 1.45.2.2 soren 41 1.45.2.2 soren #ifndef _VMPARAM_H_ 42 1.45.2.2 soren #define _VMPARAM_H_ 43 1.45.2.2 soren 44 1.45.2.2 soren /* 45 1.45.2.2 soren * Machine dependent constants for 386. 46 1.45.2.2 soren */ 47 1.45.2.2 soren 48 1.45.2.2 soren /* 49 1.45.2.2 soren * Page size on the IA-32 is not variable in the traditional sense. 50 1.45.2.2 soren * We override the PAGE_* definitions to compile-time constants. 51 1.45.2.2 soren */ 52 1.45.2.2 soren #define PAGE_SHIFT 12 53 1.45.2.2 soren #define PAGE_SIZE (1 << PAGE_SHIFT) 54 1.45.2.2 soren #define PAGE_MASK (PAGE_SIZE - 1) 55 1.45.2.2 soren 56 1.45.2.2 soren /* 57 1.45.2.2 soren * Virtual address space arrangement. On 386, both user and kernel 58 1.45.2.2 soren * share the address space, not unlike the vax. 59 1.45.2.2 soren * USRTEXT is the start of the user text/data space, while USRSTACK 60 1.45.2.2 soren * is the top (end) of the user stack. Immediately above the user stack 61 1.45.2.2 soren * resides the user structure, which is UPAGES long and contains the 62 1.45.2.2 soren * kernel stack. 63 1.45.2.2 soren * 64 1.45.2.2 soren * Immediately after the user structure is the page table map, and then 65 1.45.2.2 soren * kernal address space. 66 1.45.2.2 soren */ 67 1.45.2.2 soren #define USRTEXT NBPG 68 1.45.2.2 soren #define USRSTACK VM_MAXUSER_ADDRESS 69 1.45.2.2 soren 70 1.45.2.2 soren /* 71 1.45.2.2 soren * Virtual memory related constants, all in bytes 72 1.45.2.2 soren */ 73 1.45.2.2 soren #define MAXTSIZ (64*1024*1024) /* max text size */ 74 1.45.2.2 soren #ifndef DFLDSIZ 75 1.45.2.2 soren #define DFLDSIZ (128*1024*1024) /* initial data size limit */ 76 1.45.2.2 soren #endif 77 1.45.2.2 soren #ifndef MAXDSIZ 78 1.45.2.2 soren #define MAXDSIZ (1*1024*1024*1024) /* max data size */ 79 1.45.2.2 soren #endif 80 1.45.2.2 soren #ifndef DFLSSIZ 81 1.45.2.2 soren #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ 82 1.45.2.2 soren #endif 83 1.45.2.2 soren #ifndef MAXSSIZ 84 1.45.2.2 soren #define MAXSSIZ (32*1024*1024) /* max stack size */ 85 1.45.2.2 soren #endif 86 1.45.2.2 soren 87 1.45.2.2 soren /* 88 1.45.2.2 soren * Size of shared memory map 89 1.45.2.2 soren */ 90 1.45.2.2 soren #ifndef SHMMAXPGS 91 1.45.2.2 soren #define SHMMAXPGS 2048 92 1.45.2.2 soren #endif 93 1.45.2.2 soren 94 1.45.2.2 soren /* 95 1.45.2.2 soren * Size of User Raw I/O map 96 1.45.2.2 soren */ 97 1.45.2.2 soren #define USRIOSIZE 300 98 1.45.2.2 soren 99 1.45.2.2 soren /* 100 1.45.2.2 soren * Mach derived constants 101 1.45.2.2 soren */ 102 1.45.2.2 soren 103 1.45.2.2 soren /* user/kernel map constants */ 104 1.45.2.2 soren #define VM_MIN_ADDRESS ((vaddr_t)0) 105 1.45.2.2 soren #define VM_MAXUSER_ADDRESS \ 106 1.45.2.2 soren ((vaddr_t)((PDSLOT_PTE << PDSHIFT) - (UPAGES * NBPG))) 107 1.45.2.2 soren #define VM_MAX_ADDRESS \ 108 1.45.2.2 soren ((vaddr_t)((PDSLOT_PTE << PDSHIFT) + (PDSLOT_PTE << PGSHIFT))) 109 1.45.2.2 soren #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)(PDSLOT_KERN << PDSHIFT)) 110 1.45.2.2 soren #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)(PDSLOT_APTE << PDSHIFT)) 111 1.45.2.2 soren 112 1.45.2.2 soren /* XXX max. amount of KVM to be used by buffers. */ 113 1.45.2.2 soren #ifndef VM_MAX_KERNEL_BUF 114 1.45.2.2 soren #define VM_MAX_KERNEL_BUF (384 * 1024 * 1024) 115 1.45.2.2 soren #endif 116 1.45.2.2 soren 117 1.45.2.2 soren /* virtual sizes (bytes) for various kernel submaps */ 118 1.45.2.2 soren #define VM_PHYS_SIZE (USRIOSIZE*NBPG) 119 1.45.2.2 soren 120 1.45.2.2 soren #define VM_PHYSSEG_MAX 5 /* 1 "hole" + 4 free lists */ 121 1.45.2.2 soren #define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST 122 1.45.2.2 soren #define VM_PHYSSEG_NOADD /* can't add RAM after vm_mem_init */ 123 1.45.2.2 soren 124 1.45.2.2 soren #define VM_NFREELIST 2 125 1.45.2.2 soren #define VM_FREELIST_DEFAULT 0 126 1.45.2.2 soren #define VM_FREELIST_FIRST16 1 127 1.45.2.2 soren 128 1.45.2.2 soren #define __HAVE_PMAP_PHYSSEG 129 1.45.2.2 soren 130 1.45.2.2 soren /* 131 1.45.2.2 soren * pmap specific data stored in the vm_physmem[] array 132 1.45.2.2 soren */ 133 1.45.2.2 soren struct pmap_physseg { 134 1.45.2.2 soren struct pv_head *pvhead; /* pv_head array */ 135 1.45.2.2 soren char *attrs; /* attrs array */ 136 1.45.2.2 soren }; 137 1.45.2.2 soren 138 1.45.2.2 soren #endif /* _VMPARAM_H_ */ 139
Indexes created Tue Oct 21 08:09:48 GMT 2025