param.h revision 1.19 
1/*	$NetBSD: param.h,v 1.19 2000/02/11 19:30:28 thorpej 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#ifndef	_MACHINE_PARAM_H_
46#define	_MACHINE_PARAM_H_
47
48/*
49 * Machine dependent constants for mvme68k, based on HP9000 series 300.
50 */
51#define	_MACHINE 	mvme68k
52#define	MACHINE		"mvme68k"
53
54#define	PGSHIFT		12		/* LOG2(NBPG) */
55#define	KERNBASE	0x00000000	/* start of kernel virtual */
56
57#define	SEGSHIFT	22		/* LOG2(NBSEG) */
58#define NBSEG		(1 << SEGSHIFT)	/* bytes/segment */
59#define	SEGOFSET	(NBSEG-1)	/* byte offset into segment */
60
61#define	UPAGES		3		/* pages of u-area */
62
63#include <m68k/param.h>
64
65#define	NPTEPG		(NBPG/(sizeof (pt_entry_t)))
66
67/*
68 * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
69 * logical pages.
70 */
71#define	NKMEMPAGES_MIN_DEFAULT	((4 * 1024 * 1024) >> PAGE_SHIFT)
72#define	NKMEMPAGES_MAX_DEFAULT	((6 * 1024 * 1024) >> PAGE_SHIFT)
73
74#include <machine/psl.h>
75
76#ifdef _KERNEL
77/* spl0 requires checking for software interrupts */
78
79#define spllowersoftclock()	spl1()
80#define splsoftclock()		splraise1()
81#define splsoftnet()		splraise1()
82#define splbio()		splraise2()
83#define splnet()		splraise3()
84#define spltty()		splraise3()
85#define splimp()		splraise3()
86#define splserial()		splraise4()
87#define splclock()		splraise5()
88#define splstatclock()		splraise5()
89#define splvm()			splraise5()
90#define splhigh()		spl7()
91#define splsched()		spl7()
92
93/* watch out for side effects */
94#define splx(s)         (s & PSL_IPL ? _spl(s) : spl0())
95
96#ifndef _LOCORE
97extern void _delay __P((unsigned));
98#define delay(us)	_delay((us)<<8)
99#define DELAY(n)	delay(n)
100#endif	/* !_LOCORE */
101#endif	/* _KERNEL */
102
103#endif	/* !_MACHINE_PARAM_H_ */
104