param.h revision 148805
1/* $FreeBSD: head/sys/ia64/include/param.h 148805 2005-08-06 19:59:23Z 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 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * from: Utah $Hdr: machparam.h 1.11 89/08/14$ 38 * 39 * @(#)param.h 8.1 (Berkeley) 6/10/93 40 */ 41 42/* 43 * Machine dependent constants for the IA64. 44 */ 45/* 46 * Round p (pointer or byte index) up to a correctly-aligned value for all 47 * data types (int, long, ...). The result is u_long and must be cast to 48 * any desired pointer type. 49 * 50 * ALIGNED_POINTER is a boolean macro that checks whether an address 51 * is valid to fetch data elements of type t from on this architecture. 52 * This does not reflect the optimal alignment, just the possibility 53 * (within reasonable limits). 54 * 55 */ 56#ifndef _ALIGNBYTES 57#define _ALIGNBYTES 15 58#endif 59#ifndef _ALIGN 60#define _ALIGN(p) (((u_long)(p) + _ALIGNBYTES) &~ _ALIGNBYTES) 61#endif 62#ifndef _ALIGNED_POINTER 63#define _ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0) 64#endif 65 66#ifndef _MACHINE 67#define _MACHINE ia64 68#endif 69#ifndef _MACHINE_ARCH 70#define _MACHINE_ARCH ia64 71#endif 72 73#ifndef _NO_NAMESPACE_POLLUTION 74 75#ifndef _MACHINE_PARAM_H_ 76#define _MACHINE_PARAM_H_ 77 78#ifndef MACHINE 79#define MACHINE "ia64" 80#endif 81#ifndef MACHINE_ARCH 82#define MACHINE_ARCH "ia64" 83#endif 84 85#ifdef SMP 86#define MAXCPU 4 87#else 88#define MAXCPU 1 89#endif 90 91/* 92 * Round p (pointer or byte index) up to a correctly-aligned value for all 93 * data types (int, long, ...). The result is u_long and must be cast to 94 * any desired pointer type. 95 * 96 * ALIGNED_POINTER is a boolean macro that checks whether an address 97 * is valid to fetch data elements of type t from on this architecture. 98 * This does not reflect the optimal alignment, just the possibility 99 * (within reasonable limits). 100 * 101 */ 102#define ALIGNBYTES _ALIGNBYTES 103#define ALIGN(p) _ALIGN(p) 104#define ALIGNED_POINTER(p,t) _ALIGNED_POINTER(p,t) 105 106#ifndef LOG2_PAGE_SIZE 107#define LOG2_PAGE_SIZE 13 /* 8K pages by default. */ 108#endif 109#define PAGE_SHIFT (LOG2_PAGE_SIZE) 110#define PAGE_SIZE (1<<(LOG2_PAGE_SIZE)) 111#define PAGE_MASK (PAGE_SIZE-1) 112#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 113 114#define CLSIZE 1 115#define CLSIZELOG2 0 116 117/* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ 118#define SSIZE 1 /* initial stack size/NBPG */ 119#define SINCR 1 /* increment of stack/NBPG */ 120 121#ifndef KSTACK_PAGES 122#define KSTACK_PAGES 4 /* pages of kernel stack */ 123#endif 124#define KSTACK_GUARD_PAGES 0 /* pages of kstack guard; 0 disables */ 125 126/* 127 * Mach derived conversion macros 128 */ 129#define round_page(x) ((((unsigned long)(x)) + PAGE_MASK) & ~(PAGE_MASK)) 130#define trunc_page(x) ((unsigned long)(x) & ~(PAGE_MASK)) 131 132#define atop(x) ((unsigned long)(x) >> PAGE_SHIFT) 133#define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT) 134 135#define ia64_btop(x) ((unsigned long)(x) >> PAGE_SHIFT) 136#define ia64_ptob(x) ((unsigned long)(x) << PAGE_SHIFT) 137 138#define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 139 140#endif /* !_MACHINE_PARAM_H_ */ 141#endif /* !_NO_NAMESPACE_POLLUTION */ 142