param.h revision 1.33 
1/*	$NetBSD: param.h,v 1.33 1997/06/10 07:54:35 veego Exp $	*/
2
3/*
4 * Copyright (c) 1988 University of Utah.
5 * Copyright (c) 1982, 1986, 1990 The Regents of the University of California.
6 * 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 $Hdr: machparam.h 1.11 89/08/14$
41 *
42 *	@(#)param.h	7.8 (Berkeley) 6/28/91
43 */
44
45#ifndef	_MACHINE_PARAM_H_
46#define	_MACHINE_PARAM_H_
47
48/*
49 * Machine dependent constants for amiga
50 */
51#define	_MACHINE	amiga
52#define	MACHINE		"amiga"
53
54#define	PGSHIFT		13		/* LOG2(NBPG) */
55#define	KERNBASE	0x00000000	/* start of kernel virtual */
56
57#include <m68k/param.h>
58
59#define	SEGSHIFT	24		/* LOG2(NBSEG) [68030 value] */
60#define NBSEG		((mmutype == MMU_68040) ? 32*NBPG : 2048*NBPG)	/* bytes/segment */
61#define	SEGOFSET	(NBSEG-1)	/* byte offset into segment */
62
63/*
64 * Size of kernel malloc arena in CLBYTES-sized logical pages
65 */
66#ifndef NKMEMCLUSTERS
67# define	NKMEMCLUSTERS	(3072 * 1024 / CLBYTES)
68#endif
69
70/*
71 * Mach derived conversion macros
72 */
73#define amiga_round_seg(x)	((((unsigned)(x)) + NBSEG - 1) & ~(NBSEG-1))
74#define amiga_trunc_seg(x)	((unsigned)(x) & ~(NBSEG-1))
75#define amiga_round_page(x)	((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1))
76#define amiga_trunc_page(x)	((unsigned)(x) & ~(NBPG-1))
77#define amiga_btop(x)		((unsigned)(x) >> PGSHIFT)
78#define amiga_ptob(x)		((unsigned)(x) << PGSHIFT)
79
80/*
81 * spl functions; all are normally done in-line
82 */
83#include <machine/psl.h>
84
85#ifdef	_KERNEL
86/*
87 * point to the custom.intenar and custom.intenaw respectively.
88 */
89extern volatile unsigned short *amiga_intena_read, *amiga_intena_write;
90
91#ifndef	_LOCORE
92void delay __P((int));
93void DELAY __P((int));
94#endif	/* !_LOCORE */
95#endif	/* _KERNEL */
96
97#endif	/* !_MACHINE_PARAM_H_ */
98