param.h revision 1.7 
1/*	$NetBSD: param.h,v 1.7 2002/12/20 16:39:11 tsutsui 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 * Interrupt glue.
50 */
51#include <machine/intr.h>
52
53/*
54 * Machine dependent constants for m68k NEWS.
55 */
56#define	_MACHINE	news68k
57#define	MACHINE		"news68k"
58
59
60#define	PGSHIFT		12		/* LOG2(NBPG) */
61#define	KERNBASE	0x00000000	/* start of kernel virtual */
62
63#define	SEGSHIFT	22		/* LOG2(NBSEG) */
64#if defined(M68030) && !defined(M68040) && !defined(M68060)
65#define NBSEG		(1 << SEGSHIFT)	/* bytes/segment */
66#elif (defined(M68040) || defined(M68060)) && !defined(M68030)
67#define	NBSEG		(32 * (1 << PGSHIFT))
68#else
69#define	NBSEG		((mmutype == MMU_68040) ? \
70				(32 * (1 << PGSHIFT)) : (256 * (1 << PGSHIFT)))
71#endif
72#define	SEGOFSET	(NBSEG-1)	/* byte offset into segment */
73
74#define	UPAGES		2		/* pages of u-area */
75
76#include <m68k/param.h>
77
78#define	NPTEPG		(NBPG/(sizeof (pt_entry_t)))
79
80/*
81 * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
82 * logical pages.
83 */
84#define	NKMEMPAGES_MIN_DEFAULT	((3 * 1024 * 1024) >> PAGE_SHIFT)
85#define	NKMEMPAGES_MAX_DEFAULT	((4 * 1024 * 1024) >> PAGE_SHIFT)
86
87#if defined(_KERNEL) && !defined(_LOCORE)
88#define	delay(us)	_delay((us) << 8)
89#define DELAY(us)	delay(us)
90
91void	_delay(u_int);
92#endif /* _KERNEL && !_LOCORE */
93
94#if defined(_KERNEL_OPT)
95#include "opt_compat_hpux.h"
96#endif
97
98#ifdef COMPAT_HPUX
99/*
100 * Constants/macros for HPUX multiple mapping of user address space.
101 * Pages in the first 256Mb are mapped in at every 256Mb segment.
102 */
103#define HPMMMASK	0xF0000000
104#define ISHPMMADDR(v) \
105	((curproc->p_md.md_flags & MDP_HPUXMMAP) && \
106	 ((unsigned)(v) & HPMMMASK) && \
107	 ((unsigned)(v) & HPMMMASK) != HPMMMASK)
108#define HPMMBASEADDR(v) \
109	((unsigned)(v) & ~HPMMMASK)
110#endif
111
112#endif	/* !_MACHINE_PARAM_H_ */
113