1/* $FreeBSD$ */
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#ifndef _IA64_INCLUDE_PARAM_H_
43#define	_IA64_INCLUDE_PARAM_H_
44
45/*
46 * Machine dependent constants for the IA64.
47 */
48
49#include <machine/_align.h>
50
51#define __HAVE_ACPI
52#define __PCI_REROUTE_INTERRUPT
53
54#ifndef MACHINE
55#define	MACHINE		"ia64"
56#endif
57#ifndef MACHINE_ARCH
58#define	MACHINE_ARCH	"ia64"
59#endif
60#ifndef MACHINE_ARCH32
61#define	MACHINE_ARCH32	"i386"
62#endif
63
64#if defined(SMP) || defined(KLD_MODULE)
65#ifndef MAXCPU
66#define	MAXCPU		64
67#endif
68#else
69#define MAXCPU		1
70#endif
71
72#ifndef MAXMEMDOM
73#define	MAXMEMDOM	1
74#endif
75
76#define	ALIGNBYTES		_ALIGNBYTES
77#define	ALIGN(p)		_ALIGN(p)
78/*
79 * ALIGNED_POINTER is a boolean macro that checks whether an address
80 * is valid to fetch data elements of type t from on this architecture.
81 * This does not reflect the optimal alignment, just the possibility
82 * (within reasonable limits).
83 */
84#define	ALIGNED_POINTER(p,t)	((((u_long)(p)) & (sizeof(t)-1)) == 0)
85
86/*
87 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an
88 * architecture.  It should be used with appropriate caution.
89 */
90#define	CACHE_LINE_SHIFT	7
91#define	CACHE_LINE_SIZE		(1 << CACHE_LINE_SHIFT)
92
93#ifndef LOG2_PAGE_SIZE
94#define	LOG2_PAGE_SIZE		13		/* 8K pages by default. */
95#endif
96#define	PAGE_SHIFT	(LOG2_PAGE_SIZE)
97#define	PAGE_SIZE	(1<<(LOG2_PAGE_SIZE))
98#define PAGE_MASK	(PAGE_SIZE-1)
99#define NPTEPG		(PAGE_SIZE/(sizeof (pt_entry_t)))
100
101#define	MAXPAGESIZES	1		/* maximum number of supported page sizes */
102
103#ifndef	KSTACK_PAGES
104#define	KSTACK_PAGES	4		/* pages of kernel stack */
105#endif
106#define	KSTACK_GUARD_PAGES 0		/* pages of kstack guard; 0 disables */
107
108/* The default size of identity mappings in region 6 & 7. */
109#ifndef LOG2_ID_PAGE_SIZE
110#define	LOG2_ID_PAGE_SIZE	16
111#endif
112
113/*
114 * Mach derived conversion macros
115 */
116#define	round_page(x)	((((unsigned long)(x)) + PAGE_MASK) & ~(PAGE_MASK))
117#define	trunc_page(x)	((unsigned long)(x) & ~(PAGE_MASK))
118
119#define atop(x)			((unsigned long)(x) >> PAGE_SHIFT)
120#define ptoa(x)			((unsigned long)(x) << PAGE_SHIFT)
121
122#define pgtok(x)                ((x) * (PAGE_SIZE / 1024))
123
124#endif	/* !_IA64_INCLUDE_PARAM_H_ */
125