1 /* $NetBSD: vmparam.h,v 1.3 2003/10/17 20:27:00 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 /* 41 * Machine dependent constants for 386. 42 */ 43 44 /* 45 * Page size on the amd64 s not variable in the traditional sense. 46 * We override the PAGE_* definitions to compile-time constants. 47 */ 48 #define PAGE_SHIFT 12 49 #define PAGE_SIZE (1 << PAGE_SHIFT) 50 #define PAGE_MASK (PAGE_SIZE - 1) 51 52 /* 53 * USRSTACK is the top (end) of the user stack. Immediately above the 54 * user stack resides the user structure, which is UPAGES long and contains 55 * the kernel stack. 56 * 57 * Immediately after the user structure is the page table map, and then 58 * kernal address space. 59 */ 60 #define USRSTACK VM_MAXUSER_ADDRESS 61 62 #define USRSTACK32 VM_MAXUSER_ADDRESS32 63 64 /* 65 * Virtual memory related constants, all in bytes 66 */ 67 #define MAXTSIZ (64*1024*1024) /* max text size */ 68 #ifndef DFLDSIZ 69 #define DFLDSIZ (128*1024*1024) /* initial data size limit */ 70 #endif 71 #ifndef MAXDSIZ 72 #define MAXDSIZ (1*1024*1024*1024) /* max data size */ 73 #endif 74 #ifndef DFLSSIZ 75 #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ 76 #endif 77 #ifndef MAXSSIZ 78 #define MAXSSIZ (32*1024*1024) /* max stack size */ 79 #endif 80 81 /* 82 * Size of shared memory map 83 */ 84 #ifndef SHMMAXPGS 85 #define SHMMAXPGS 2048 86 #endif 87 88 /* 89 * Size of User Raw I/O map 90 */ 91 #define USRIOSIZE 300 92 93 /* 94 * Mach derived constants 95 */ 96 97 /* user/kernel map constants */ 98 #define VM_MIN_ADDRESS 0 99 #define VM_MAXUSER_ADDRESS 0x00007f8000000000 100 #define VM_MAX_ADDRESS 0x00007fbfdfeff000 101 #define VM_MIN_KERNEL_ADDRESS 0xffff800000000000 102 #define VM_MAX_KERNEL_ADDRESS 0xffff800100000000 103 104 #define VM_MAXUSER_ADDRESS32 0xfffff000 105 106 /* 107 * XXXfvdl we have plenty of KVM now, remove this. 108 */ 109 #ifndef VM_MAX_KERNEL_BUF 110 #define VM_MAX_KERNEL_BUF (384 * 1024 * 1024) 111 #endif 112 113 /* virtual sizes (bytes) for various kernel submaps */ 114 #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 115 116 #define VM_PHYSSEG_MAX 5 /* 1 "hole" + 4 free lists */ 117 #define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST 118 #define VM_PHYSSEG_NOADD /* can't add RAM after vm_mem_init */ 119 120 #define VM_NFREELIST 2 121 #define VM_FREELIST_DEFAULT 0 122 #define VM_FREELIST_FIRST16 1 123 124 #define __HAVE_PMAP_PHYSSEG 125 126 /* 127 * pmap specific data stored in the vm_physmem[] array 128 */ 129 struct pmap_physseg { 130 struct pv_head *pvhead; /* pv_head array */ 131 unsigned char *attrs; /* attrs array */ 132 }; 133 134 #endif /* _VMPARAM_H_ */ 135