1/* $NetBSD: intr.h,v 1.13 2008/07/10 16:14:16 tsutsui 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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef _MACHINE_INTR_H
33#define _MACHINE_INTR_H
34
35#ifdef _KERNEL
36
37/*
38 * spl functions; all but spl0 are done in-line
39 */
40#include <machine/psl.h>
41
42#define splnone()	spl0()
43#define splsoftclock()	splraise1()
44#define splsoftbio()	splraise1()
45#define splsoftnet()	splraise1()
46#define splsoftserial()	splraise1()
47#define splvm()		splraise4()
48#define splsched()	splraise5()
49#define splhigh()	spl7()
50
51/* watch out for side effects */
52#define splx(s)         ((s) & PSL_IPL ? _spl(s) : spl0())
53
54int spl0(void);
55
56#define	IPL_NONE	0
57#define	IPL_SOFTCLOCK	1
58#define	IPL_SOFTBIO	2
59#define	IPL_SOFTNET	3
60#define	IPL_SOFTSERIAL	4
61#define	IPL_VM		5
62#define	IPL_SCHED	6
63#define	IPL_HIGH	7
64#define	NIPL		8
65
66extern const uint16_t ipl2psl_table[NIPL];
67
68typedef int ipl_t;
69typedef struct {
70	uint16_t _psl;
71} ipl_cookie_t;
72
73static inline ipl_cookie_t
74makeiplcookie(ipl_t ipl)
75{
76
77	return (ipl_cookie_t){._psl = ipl2psl_table[ipl]};
78}
79
80static inline int
81splraiseipl(ipl_cookie_t icookie)
82{
83
84	return _splraise(icookie._psl);
85}
86
87#endif /* _KERNEL */
88
89#endif	/* _MACHINE_INTR_H */
90