param.h revision 1.5 
1/*	$NetBSD: param.h,v 1.5 2002/11/03 19:56:28 chs Exp $	*/
2
3/*
4 * Copyright (c) 1988 University of Utah.
5 * Copyright (c) 1982, 1986, 1990, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * the Systems Programming Group of the University of Utah Computer
10 * Science Department.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 *    notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 *    notice, this list of conditions and the following disclaimer in the
19 *    documentation and/or other materials provided with the distribution.
20 * 3. All advertising materials mentioning features or use of this software
21 *    must display the following acknowledgement:
22 *	This product includes software developed by the University of
23 *	California, Berkeley and its contributors.
24 * 4. Neither the name of the University nor the names of its contributors
25 *    may be used to endorse or promote products derived from this software
26 *    without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * SUCH DAMAGE.
39 *
40 * from: Utah $Hdr: machparam.h 1.16 92/12/20$
41 *
42 *	@(#)param.h	8.1 (Berkeley) 6/10/93
43 */
44
45/*
46 * Machine dependent constants for CES FIC8234.
47 */
48#define	_MACHINE	cesfic
49#define	MACHINE		"cesfic"
50
51/*
52 * Round p (pointer or byte index) up to a correctly-aligned value for all
53 * data types (int, long, ...).   The result is u_int and must be cast to
54 * any desired pointer type.
55 *
56 * ALIGNED_POINTER is a boolean macro that checks whether an address
57 * is valid to fetch data elements of type t from on this architecture.
58 * This does not reflect the optimal alignment, just the possibility
59 * (within reasonable limits).
60 *
61 */
62
63#define	PGSHIFT		12		/* LOG2(NBPG) */
64#define	NPTEPG		(NBPG/(sizeof (pt_entry_t)))
65
66#define	SEGSHIFT	22		/* LOG2(NBSEG) */
67#if defined(M68030) && !defined(M68040) && !defined(M68060)
68#define NBSEG		(1 << SEGSHIFT)	/* bytes/segment */
69#elif (defined(M68040) || defined(M68060)) && !defined(M68030)
70#define	NBSEG		(32 * (1 << PGSHIFT))
71#else
72#define	NBSEG		((mmutype == MMU_68040) ? \
73				(32 * (1 << PGSHIFT)) : (256 * (1 << PGSHIFT)))
74#endif
75#define	SEGOFSET	(NBSEG-1)	/* byte offset into segment */
76
77#define	KERNBASE	0x00002000	/* start of kernel virtual */
78
79#define	UPAGES		2		/* pages of u-area */
80
81#include <m68k/param.h>
82
83/*
84 * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
85 * logical pages.
86 */
87#define	NKMEMPAGES_MIN_DEFAULT	((3 * 1024 * 1024) >> PAGE_SHIFT)
88#define	NKMEMPAGES_MAX_DEFAULT	((3 * 1024 * 1024) >> PAGE_SHIFT)
89
90/*
91 * Interrupt glue.
92 */
93#include <machine/intr.h>
94
95#if defined(_KERNEL) && !defined(_LOCORE)
96#define	delay(us)	_delay((us) << 8)
97#define DELAY(us)	delay(us)
98
99void	_delay __P((u_int));
100#endif /* _KERNEL && !_LOCORE */
101