param.h revision 191309 
1/* $FreeBSD: head/sys/ia64/include/param.h 191309 2009-04-20 12:59:23Z rwatson $ */
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#if defined(SMP) || defined(KLD_MODULE)
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/*
103 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an
104 * architecture.  It should be used with appropriate caution.
105 */
106#define	CACHE_LINE_SHIFT	7
107#define	CACHE_LINE_SIZE		(1 << CACHE_LINE_SHIFT)
108
109#ifndef LOG2_PAGE_SIZE
110#define	LOG2_PAGE_SIZE		13		/* 8K pages by default. */
111#endif
112#define	PAGE_SHIFT	(LOG2_PAGE_SIZE)
113#define	PAGE_SIZE	(1<<(LOG2_PAGE_SIZE))
114#define PAGE_MASK	(PAGE_SIZE-1)
115#define NPTEPG		(PAGE_SIZE/(sizeof (pt_entry_t)))
116
117#ifndef	KSTACK_PAGES
118#define	KSTACK_PAGES	4		/* pages of kernel stack */
119#endif
120#define	KSTACK_GUARD_PAGES 0		/* pages of kstack guard; 0 disables */
121
122/*
123 * Mach derived conversion macros
124 */
125#define	round_page(x)	((((unsigned long)(x)) + PAGE_MASK) & ~(PAGE_MASK))
126#define	trunc_page(x)	((unsigned long)(x) & ~(PAGE_MASK))
127
128#define atop(x)			((unsigned long)(x) >> PAGE_SHIFT)
129#define ptoa(x)			((unsigned long)(x) << PAGE_SHIFT)
130
131#define	ia64_btop(x)		((unsigned long)(x) >> PAGE_SHIFT)
132#define	ia64_ptob(x)		((unsigned long)(x) << PAGE_SHIFT)
133
134#define pgtok(x)                ((x) * (PAGE_SIZE / 1024))
135
136#endif	/* !_MACHINE_PARAM_H_ */
137#endif	/* !_NO_NAMESPACE_POLLUTION */
138