intr.h revision 1.5 
1/* $NetBSD: intr.h,v 1.5 2006/12/21 15:55:23 yamt Exp $ */
2
3/*-
4 * Copyright (c) 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Tohru Nishimura.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *	This product includes software developed by the NetBSD
21 *	Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 *    contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39#ifndef _MACHINE_INTR_H
40#define _MACHINE_INTR_H
41
42#ifdef _KERNEL
43
44/*
45 * spl functions; all but spl0 are done in-line
46 */
47#include <machine/psl.h>
48
49#define splnone()	spl0()
50#define spllowersoftclock()  spl1()
51#define splsoftclock()  splraise1()
52#define splsoftnet()    splraise1()
53#define splbio()        spl2()
54#define splnet()        spl3()
55#define spltty()        spl6()
56#define splclock()      spl5()
57#define splstatclock()	spl5()
58#define splvm()         spl7()
59#define splhigh()       spl7()
60#define splsched()      spl7()
61#define spllock()	spl7()
62
63/* watch out for side effects */
64#define splx(s)         ((s) & PSL_IPL ? _spl(s) : spl0())
65
66int spl0 __P((void));
67
68#define	IPL_NONE	0
69#define	IPL_SOFTCLOCK	1
70#define	IPL_SOFTNET	2
71#define	IPL_BIO		3
72#define	IPL_NET		4
73#define	IPL_CLOCK	5
74#define	IPL_STATCLOCK	6
75#define	IPL_TTY		7
76#define	IPL_VM		8
77#define	IPL_SCHED	9
78#define	IPL_HIGH	10
79#define	IPL_LOCK	11
80#define	NIPLS		12
81
82extern const int ipl2spl_table[NIPLS];
83
84typedef int ipl_t;
85typedef struct {
86	int _spl;
87} ipl_cookie_t;
88
89static inline ipl_cookie_t
90makeiplcookie(ipl_t ipl)
91{
92
93	return (ipl_cookie_t){._spl = ipl2spl_table[ipl]};
94}
95
96static inline int
97splraiseipl(ipl_cookie_t icookie)
98{
99
100	return _splraise(icookie._spl);
101}
102#endif /* _KERNEL */
103
104#endif	/* _MACHINE_INTR_H */
105