param.h revision 154128
1/* $FreeBSD: head/sys/ia64/include/param.h 154128 2006-01-09 06:05:57Z imp $ */ 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 _NO_NAMESPACE_POLLUTION 67 68#define __HAVE_ACPI 69#define __PCI_REROUTE_INTERRUPT 70 71#ifndef _MACHINE_PARAM_H_ 72#define _MACHINE_PARAM_H_ 73 74#ifndef MACHINE 75#define MACHINE "ia64" 76#endif 77#ifndef MACHINE_ARCH 78#define MACHINE_ARCH "ia64" 79#endif 80 81#ifdef SMP 82#define MAXCPU 4 83#else 84#define MAXCPU 1 85#endif 86 87/* 88 * Round p (pointer or byte index) up to a correctly-aligned value for all 89 * data types (int, long, ...). The result is u_long and must be cast to 90 * any desired pointer type. 91 * 92 * ALIGNED_POINTER is a boolean macro that checks whether an address 93 * is valid to fetch data elements of type t from on this architecture. 94 * This does not reflect the optimal alignment, just the possibility 95 * (within reasonable limits). 96 * 97 */ 98#define ALIGNBYTES _ALIGNBYTES 99#define ALIGN(p) _ALIGN(p) 100#define ALIGNED_POINTER(p,t) _ALIGNED_POINTER(p,t) 101 102#ifndef LOG2_PAGE_SIZE 103#define LOG2_PAGE_SIZE 13 /* 8K pages by default. */ 104#endif 105#define PAGE_SHIFT (LOG2_PAGE_SIZE) 106#define PAGE_SIZE (1<<(LOG2_PAGE_SIZE)) 107#define PAGE_MASK (PAGE_SIZE-1) 108#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 109 110#ifndef KSTACK_PAGES 111#define KSTACK_PAGES 4 /* pages of kernel stack */ 112#endif 113#define KSTACK_GUARD_PAGES 0 /* pages of kstack guard; 0 disables */ 114 115/* 116 * Mach derived conversion macros 117 */ 118#define round_page(x) ((((unsigned long)(x)) + PAGE_MASK) & ~(PAGE_MASK)) 119#define trunc_page(x) ((unsigned long)(x) & ~(PAGE_MASK)) 120 121#define atop(x) ((unsigned long)(x) >> PAGE_SHIFT) 122#define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT) 123 124#define ia64_btop(x) ((unsigned long)(x) >> PAGE_SHIFT) 125#define ia64_ptob(x) ((unsigned long)(x) << PAGE_SHIFT) 126 127#define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 128 129#endif /* !_MACHINE_PARAM_H_ */ 130#endif /* !_NO_NAMESPACE_POLLUTION */ 131