intr.h revision 1.20 
1/*	$NetBSD: intr.h,v 1.20 2008/06/23 01:49:31 isaki Exp $	*/
2
3/*-
4 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Minoura Makoto and Jason R. Thorpe.
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 _X68K_INTR_H_
33#define	_X68K_INTR_H_
34
35#include <machine/psl.h>
36
37/* spl0 requires checking for software interrupts */
38void	spl0(void);
39
40#define splsoftbio()	splraise1()
41#define splsoftclock()	splraise1()
42#define splsoftnet()	splraise1()
43#define splsoftserial()	splraise1()
44#define splvm()         splraise5()
45#define splsched()      spl7()
46#define splhigh()       spl7()
47
48#define	splnone()	spl0()
49#define	splzs()		splraise5()	/* disallow serial interrupts */
50
51/* watch out for side effects */
52#define splx(s)         ((s) & PSL_IPL ? _spl(s) : spl0())
53
54#define	IPL_NONE	0
55#define	IPL_SOFTCLOCK	1
56#define	IPL_SOFTBIO	2
57#define	IPL_SOFTNET	3
58#define	IPL_SOFTSERIAL	4
59#define	IPL_VM		5
60#define	IPL_SCHED	6
61#define	IPL_HIGH	7
62#define	NIPL		8
63
64extern const uint16_t ipl2psl_table[NIPL];
65
66typedef int ipl_t;
67typedef struct {
68	uint16_t _psl;
69} ipl_cookie_t;
70
71static inline ipl_cookie_t
72makeiplcookie(ipl_t ipl)
73{
74
75	return (ipl_cookie_t){._psl = ipl2psl_table[ipl]};
76}
77
78static inline int
79splraiseipl(ipl_cookie_t icookie)
80{
81
82	return _splraise(icookie._psl);
83}
84
85#endif /* !_X68K_INTR_H_ */
86