1 /* $OpenBSD: vmparam.h,v 1.14 2011/03/23 16:54:34 pirofti Exp $ */ 2 /* $NetBSD: vmparam.h,v 1.1 2003/04/26 18:39:49 fvdl Exp $ */ 3 4 /*- 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * William Jolitz. 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 * @(#)vmparam.h 5.9 (Berkeley) 5/12/91 36 */ 37 38 #ifndef _MACHINE_VMPARAM_H_ 39 #define _MACHINE_VMPARAM_H_ 40 41 /* 42 * Machine dependent constants for amd64. 43 */ 44 45 /* 46 * USRSTACK is the top (end) of the user stack. Immediately above the 47 * user stack resides the user structure, which is UPAGES long and contains 48 * the kernel stack. 49 * 50 * Immediately after the user structure is the page table map, and then 51 * kernel address space. 52 */ 53 #define USRSTACK VM_MAXUSER_ADDRESS 54 55 /* 56 * Virtual memory related constants, all in bytes 57 */ 58 #define MAXTSIZ ((paddr_t)64*1024*1024) /* max text size */ 59 #ifndef DFLDSIZ 60 #define DFLDSIZ ((paddr_t)128*1024*1024) /* initial data size limit */ 61 #endif 62 #ifndef MAXDSIZ 63 #define MAXDSIZ ((paddr_t)8*1024*1024*1024) /* max data size */ 64 #endif 65 #ifndef BRKSIZ 66 #define BRKSIZ MAXDSIZ /* heap gap size */ 67 #endif 68 #ifndef DFLSSIZ 69 #define DFLSSIZ ((paddr_t)2*1024*1024) /* initial stack size limit */ 70 #endif 71 #ifndef MAXSSIZ 72 #define MAXSSIZ ((paddr_t)32*1024*1024) /* max stack size */ 73 #endif 74 75 #define STACKGAP_RANDOM 256*1024 76 77 /* 78 * Size of shared memory map 79 */ 80 #ifndef SHMMAXPGS 81 #define SHMMAXPGS 8192 82 #endif 83 84 /* 85 * Size of User Raw I/O map 86 */ 87 #define USRIOSIZE 300 88 89 /* 90 * Mach derived constants 91 */ 92 93 /* user/kernel map constants */ 94 #define VM_MIN_ADDRESS PAGE_SIZE 95 #define VM_MAXUSER_ADDRESS 0x00007f7fffffc000 96 #define VM_MAX_ADDRESS 0x00007fbfdfeff000 97 #define VM_MIN_KERNEL_ADDRESS 0xffff800000000000 98 #define VM_MAX_KERNEL_ADDRESS 0xffff800100000000 99 100 #define VM_MAXUSER_ADDRESS32 0xffffc000 101 102 /* map PIE into approximately the first quarter of user va space */ 103 #define VM_PIE_MIN_ADDR VM_MIN_ADDRESS 104 #define VM_PIE_MAX_ADDR 0x200000000000 105 106 /* virtual sizes (bytes) for various kernel submaps */ 107 #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 108 109 #define VM_PHYSSEG_MAX 16 /* actually we could have this many segments */ 110 #define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST 111 #define VM_PHYSSEG_NOADD /* can't add RAM after vm_mem_init */ 112 113 #define VM_NFREELIST 3 114 #define VM_FREELIST_DEFAULT 0 115 #define VM_FREELIST_LOW 1 116 #define VM_FREELIST_HIGH 2 117 118 #define __HAVE_VM_PAGE_MD 119 struct pv_entry; 120 struct vm_page_md { 121 struct pv_entry *pv_list; 122 }; 123 124 #define VM_MDPAGE_INIT(pg) do { \ 125 (pg)->mdpage.pv_list = NULL; \ 126 } while (0) 127 128 #endif /* _MACHINE_VMPARAM_H_ */ 129