1 /* $NetBSD: vmparam.h,v 1.22 2009/11/22 21:41:03 bouyer 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 _X86_64_VMPARAM_H_ 38 #define _X86_64_VMPARAM_H_ 39 40 #ifdef __x86_64__ 41 42 #include <sys/tree.h> 43 #include <sys/mutex.h> 44 #ifdef _KERNEL_OPT 45 #include "opt_xen.h" 46 #endif 47 48 /* 49 * Machine dependent constants for 386. 50 */ 51 52 /* 53 * Page size on the amd64 s not variable in the traditional sense. 54 * We override the PAGE_* definitions to compile-time constants. 55 */ 56 #define PAGE_SHIFT 12 57 #define PAGE_SIZE (1 << PAGE_SHIFT) 58 #define PAGE_MASK (PAGE_SIZE - 1) 59 60 /* 61 * USRSTACK is the top (end) of the user stack. Immediately above the 62 * user stack resides the user structure, which is UPAGES long and contains 63 * the kernel stack. 64 * 65 * Immediately after the user structure is the page table map, and then 66 * kernel address space. 67 */ 68 #define USRSTACK VM_MAXUSER_ADDRESS 69 70 #define USRSTACK32 VM_MAXUSER_ADDRESS32 71 72 /* 73 * Virtual memory related constants, all in bytes 74 */ 75 #define MAXTSIZ (64*1024*1024) /* max text size */ 76 #ifndef DFLDSIZ 77 #define DFLDSIZ (256*1024*1024) /* initial data size limit */ 78 #endif 79 #ifndef MAXDSIZ 80 #define MAXDSIZ (8L*1024*1024*1024) /* max data size */ 81 #endif 82 #ifndef DFLSSIZ 83 #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ 84 #endif 85 #ifndef MAXSSIZ 86 #define MAXSSIZ (32*1024*1024) /* max stack size */ 87 #endif 88 89 /* 90 * 32bit memory related constants. 91 */ 92 93 #define MAXTSIZ32 (64*1024*1024) 94 #ifndef DFLDSIZ32 95 #define DFLDSIZ32 (256*1024*1024) /* initial data size limit */ 96 #endif 97 #ifndef MAXDSIZ32 98 #define MAXDSIZ32 (3U*1024*1024*1024) /* max data size */ 99 #endif 100 #ifndef DFLSSIZ32 101 #define DFLSSIZ32 (2*1024*1024) /* initial stack size limit */ 102 #endif 103 #ifndef MAXSSIZ32 104 #define MAXSSIZ32 (64*1024*1024) /* max stack size */ 105 #endif 106 107 /* 108 * Size of User Raw I/O map 109 */ 110 #define USRIOSIZE 300 111 112 /* 113 * Mach derived constants 114 */ 115 116 /* user/kernel map constants */ 117 #define VM_MIN_ADDRESS 0 118 #define VM_MAXUSER_ADDRESS 0x00007f8000000000 119 #define VM_MAX_ADDRESS 0x00007fbfdfeff000 120 #ifndef XEN 121 #define VM_MIN_KERNEL_ADDRESS 0xffff800000000000 122 #else /* XEN */ 123 #define VM_MIN_KERNEL_ADDRESS 0xffffa00000000000 124 #endif 125 #define VM_MAX_KERNEL_ADDRESS 0xffffff8000000000 126 127 #define VM_MAXUSER_ADDRESS32 0xfffff000 128 129 /* 130 * The address to which unspecified mapping requests default 131 */ 132 #ifdef _KERNEL_OPT 133 #include "opt_uvm.h" 134 #endif 135 #define __USE_TOPDOWN_VM 136 #define VM_DEFAULT_ADDRESS(da, sz) \ 137 trunc_page(USRSTACK - MAXSSIZ - (sz)) 138 #define VM_DEFAULT_ADDRESS32(da, sz) \ 139 trunc_page(USRSTACK32 - MAXSSIZ32 - (sz)) 140 141 /* 142 * XXXfvdl we have plenty of KVM now, remove this. 143 */ 144 #ifndef VM_MAX_KERNEL_BUF 145 #define VM_MAX_KERNEL_BUF (384 * 1024 * 1024) 146 #endif 147 148 /* virtual sizes (bytes) for various kernel submaps */ 149 #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 150 151 #define VM_PHYSSEG_MAX 10 /* 1 "hole" + 9 free lists */ 152 #define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST 153 #define VM_PHYSSEG_NOADD /* can't add RAM after vm_mem_init */ 154 155 #define VM_NFREELIST 3 156 #define VM_FREELIST_DEFAULT 0 157 #define VM_FREELIST_FIRST4G 1 158 #define VM_FREELIST_FIRST16 2 159 160 #include <x86/pmap_pv.h> 161 162 #define __HAVE_VM_PAGE_MD 163 #define VM_MDPAGE_INIT(pg) \ 164 memset(&(pg)->mdpage, 0, sizeof((pg)->mdpage)); \ 165 PMAP_PAGE_INIT(&(pg)->mdpage.mp_pp) 166 167 struct vm_page_md { 168 struct pmap_page mp_pp; 169 }; 170 171 #else /* !__x86_64__ */ 172 173 #include <i386/vmparam.h> 174 175 #endif /* __x86_64__ */ 176 177 #endif /* _X86_64_VMPARAM_H_ */ 178