param.h revision 114347
1/* $FreeBSD: head/sys/ia64/include/param.h 114347 2003-04-30 23:16:33Z marcel $ */ 2/* From: NetBSD: param.h,v 1.20 1997/09/19 13:52:53 leo Exp */ 3 4/* 5 * Copyright (c) 1988 University of Utah. 6 * Copyright (c) 1992, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * the Systems Programming Group of the University of Utah Computer 11 * Science Department and Ralph Campbell. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgement: 23 * This product includes software developed by the University of 24 * California, Berkeley and its contributors. 25 * 4. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 * from: Utah $Hdr: machparam.h 1.11 89/08/14$ 42 * 43 * @(#)param.h 8.1 (Berkeley) 6/10/93 44 */ 45 46/* 47 * Machine dependent constants for the IA64. 48 */ 49/* 50 * Round p (pointer or byte index) up to a correctly-aligned value for all 51 * data types (int, long, ...). The result is u_long and must be cast to 52 * any desired pointer type. 53 * 54 * ALIGNED_POINTER is a boolean macro that checks whether an address 55 * is valid to fetch data elements of type t from on this architecture. 56 * This does not reflect the optimal alignment, just the possibility 57 * (within reasonable limits). 58 * 59 */ 60#ifndef _ALIGNBYTES 61#define _ALIGNBYTES 15 62#endif 63#ifndef _ALIGN 64#define _ALIGN(p) (((u_long)(p) + _ALIGNBYTES) &~ _ALIGNBYTES) 65#endif 66#ifndef _ALIGNED_POINTER 67#define _ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0) 68#endif 69 70#ifndef _MACHINE 71#define _MACHINE ia64 72#endif 73#ifndef _MACHINE_ARCH 74#define _MACHINE_ARCH ia64 75#endif 76 77#ifndef _NO_NAMESPACE_POLLUTION 78 79#ifndef _MACHINE_PARAM_H_ 80#define _MACHINE_PARAM_H_ 81 82#ifndef MACHINE 83#define MACHINE "ia64" 84#endif 85#ifndef MACHINE_ARCH 86#define MACHINE_ARCH "ia64" 87#endif 88 89#ifdef SMP 90#define MAXCPU 16 91#else 92#define MAXCPU 1 93#endif 94 95/* 96 * Round p (pointer or byte index) up to a correctly-aligned value for all 97 * data types (int, long, ...). The result is u_long and must be cast to 98 * any desired pointer type. 99 * 100 * ALIGNED_POINTER is a boolean macro that checks whether an address 101 * is valid to fetch data elements of type t from on this architecture. 102 * This does not reflect the optimal alignment, just the possibility 103 * (within reasonable limits). 104 * 105 */ 106#define ALIGNBYTES _ALIGNBYTES 107#define ALIGN(p) _ALIGN(p) 108#define ALIGNED_POINTER(p,t) _ALIGNED_POINTER(p,t) 109 110#if !defined(PAGE_SIZE_4K) && !defined(PAGE_SIZE_8K) && !defined(PAGE_SIZE_16K) 111#define PAGE_SIZE_8K 112#endif 113 114#ifdef PAGE_SIZE_4K 115#define PAGE_SIZE 4096 /* bytes/page */ 116#define PAGE_SHIFT 12 117#endif 118#ifdef PAGE_SIZE_8K 119#define PAGE_SIZE 8192 /* bytes/page */ 120#define PAGE_SHIFT 13 121#endif 122#ifdef PAGE_SIZE_16K 123#define PAGE_SIZE 16384 /* bytes/page */ 124#define PAGE_SHIFT 14 125#endif 126 127#define PAGE_MASK (PAGE_SIZE-1) 128#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 129 130#define CLSIZE 1 131#define CLSIZELOG2 0 132 133/* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ 134#define SSIZE 1 /* initial stack size/NBPG */ 135#define SINCR 1 /* increment of stack/NBPG */ 136 137#define KSTACK_PAGES 4 /* pages of kernel stack */ 138#define UAREA_PAGES 1 /* pages of u-area */ 139 140/* 141 * Mach derived conversion macros 142 */ 143#define round_page(x) ((((unsigned long)(x)) + PAGE_MASK) & ~(PAGE_MASK)) 144#define trunc_page(x) ((unsigned long)(x) & ~(PAGE_MASK)) 145 146#define atop(x) ((unsigned long)(x) >> PAGE_SHIFT) 147#define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT) 148 149#define ia64_btop(x) ((unsigned long)(x) >> PAGE_SHIFT) 150#define ia64_ptob(x) ((unsigned long)(x) << PAGE_SHIFT) 151 152#define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 153 154#endif /* !_MACHINE_PARAM_H_ */ 155#endif /* !_NO_NAMESPACE_POLLUTION */ 156