1 /* $OpenBSD: uvm_param.h,v 1.18 2015/02/07 08:21:24 miod Exp $ */ 2 /* $NetBSD: uvm_param.h,v 1.5 2001/03/09 01:02:12 chs Exp $ */ 3 4 /* 5 * Copyright (c) 1991, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * The Mach Operating System project at Carnegie-Mellon University. 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 * @(#)vm_param.h 8.2 (Berkeley) 1/9/95 36 * 37 * 38 * Copyright (c) 1987, 1990 Carnegie-Mellon University. 39 * All rights reserved. 40 * 41 * Authors: Avadis Tevanian, Jr., Michael Wayne Young 42 * 43 * Permission to use, copy, modify and distribute this software and 44 * its documentation is hereby granted, provided that both the copyright 45 * notice and this permission notice appear in all copies of the 46 * software, derivative works or modified versions, and any portions 47 * thereof, and that both notices appear in supporting documentation. 48 * 49 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 50 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 51 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 52 * 53 * Carnegie Mellon requests users of this software to return to 54 * 55 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 56 * School of Computer Science 57 * Carnegie Mellon University 58 * Pittsburgh PA 15213-3890 59 * 60 * any improvements or extensions that they make and grant Carnegie the 61 * rights to redistribute these changes. 62 */ 63 64 /* 65 * Machine independent virtual memory parameters. 66 */ 67 68 #ifndef _VM_PARAM_ 69 #define _VM_PARAM_ 70 71 #ifdef _KERNEL 72 73 #include <machine/vmparam.h> 74 75 typedef int boolean_t; 76 #define TRUE 1 77 #define FALSE 0 78 79 #define DEFAULT_PAGE_SIZE 4096 80 81 #define atop(x) ((x) >> PAGE_SHIFT) 82 #define ptoa(x) ((paddr_t)(x) << PAGE_SHIFT) 83 #define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK) 84 #define trunc_page(x) ((x) & ~PAGE_MASK) 85 86 #if !defined(VM_KERNEL_SPACE_SIZE) 87 #define VM_KERNEL_SPACE_SIZE (VM_MAX_KERNEL_ADDRESS - VM_MIN_KERNEL_ADDRESS) 88 #endif 89 90 #endif /* _KERNEL */ 91 #endif /* _VM_PARAM_ */ 92