param.h revision 1.2 
1/*	$NetBSD: param.h,v 1.2 2011/02/08 20:20:11 rmind Exp $	*/
2
3/*
4 * Copyright (c) 1988 University of Utah.
5 * Copyright (c) 1992, 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 and Ralph Campbell.
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. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * from: Utah Hdr: machparam.h 1.11 89/08/14
37 *
38 *	@(#)param.h	8.1 (Berkeley) 6/10/93
39 */
40
41#ifndef _EMIPS_PARAM_H_
42#define _EMIPS_PARAM_H_
43
44/*
45 * Machine-dependent constants (VM, etc) common across MIPS cpus
46 */
47
48#include <mips/mips_param.h>
49
50/*
51 * Machine dependent constants for mips-based DECstations.
52 */
53
54#define	_MACHINE_ARCH	mipseb
55#define	MACHINE_ARCH	"mipseb"
56#define	_MACHINE	emips
57#define	MACHINE		"emips"
58#define	MID_MACHINE	MID_MIPS
59
60#define	DEV_BSIZE	512
61#define	DEV_BSHIFT	9		/* log2(DEV_BSIZE) */
62#define BLKDEV_IOSIZE	2048
63#define	MAXPHYS		(64 * 1024)	/* max raw I/O transfer size */
64
65/*
66 * Constants related to network buffer management.
67 * MCLBYTES must be no larger than NBPG (the software page size), and,
68 * on machines that exchange pages of input or output buffers with mbuf
69 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
70 * of the hardware page size.
71 */
72#define	MSIZE		256		/* size of an mbuf */
73
74#ifndef MCLSHIFT
75#define	MCLSHIFT	11		/* convert bytes to m_buf clusters */
76					/* 2K cluster can hold Ether frame */
77#endif	/* MCLSHIFT */
78
79#define	MCLBYTES	(1 << MCLSHIFT)	/* size of a m_buf cluster */
80
81#ifndef NMBCLUSTERS
82#if defined(_KERNEL_OPT)
83#include "opt_gateway.h"
84#endif
85
86#ifdef GATEWAY
87#define	NMBCLUSTERS	2048		/* map size, max cluster allocation */
88#else
89#define	NMBCLUSTERS	1024		/* map size, max cluster allocation */
90#endif
91#endif
92
93#ifdef _KERNEL
94#ifndef _LOCORE
95
96void	delay __P((int n));
97extern	int cpuspeed;
98static __inline void __attribute__((__unused__))
99DELAY(int n)
100{
101	register int __N = cpuspeed * n;
102
103	do {
104		__asm("addiu %0,%1,-1" : "=r" (__N) : "0" (__N));
105	} while (__N > 0);
106}
107
108#include <machine/intr.h>
109
110#endif	/* !_LOCORE */
111#endif	/* _KERNEL */
112
113#endif	/* !_EMIPS_PARAM_H_ */
114