intr.h revision 1.6 
1/* $NetBSD: intr.h,v 1.6 2007/02/16 02:53:48 ad 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 splsoftclock()  splraise1()
51#define splsoftnet()    splraise1()
52#define splbio()        spl2()
53#define splnet()        spl3()
54#define spltty()        spl6()
55#define splclock()      spl5()
56#define splstatclock()	spl5()
57#define splvm()         spl7()
58#define splhigh()       spl7()
59#define splsched()      spl7()
60#define spllock()	spl7()
61
62/* watch out for side effects */
63#define splx(s)         ((s) & PSL_IPL ? _spl(s) : spl0())
64
65int spl0 __P((void));
66
67#define	IPL_NONE	0
68#define	IPL_SOFTCLOCK	1
69#define	IPL_SOFTNET	2
70#define	IPL_BIO		3
71#define	IPL_NET		4
72#define	IPL_CLOCK	5
73#define	IPL_STATCLOCK	6
74#define	IPL_TTY		7
75#define	IPL_VM		8
76#define	IPL_SCHED	9
77#define	IPL_HIGH	10
78#define	IPL_LOCK	11
79#define	NIPLS		12
80
81extern const int ipl2spl_table[NIPLS];
82
83typedef int ipl_t;
84typedef struct {
85	int _spl;
86} ipl_cookie_t;
87
88static inline ipl_cookie_t
89makeiplcookie(ipl_t ipl)
90{
91
92	return (ipl_cookie_t){._spl = ipl2spl_table[ipl]};
93}
94
95static inline int
96splraiseipl(ipl_cookie_t icookie)
97{
98
99	return _splraise(icookie._spl);
100}
101#endif /* _KERNEL */
102
103#endif	/* _MACHINE_INTR_H */
104