intr.h revision 1.11 
1/*	$NetBSD: intr.h,v 1.11 2006/12/21 15:55:25 yamt 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 * 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 _X68K_INTR_H_
40#define	_X68K_INTR_H_
41
42#include <machine/psl.h>
43
44#if defined(_KERNEL) && !defined(_LOCORE)
45
46/* spl0 requires checking for software interrupts */
47void	spl0(void);
48
49#define	splnone()	spl0()
50#define	spllowersoftclock() spl1()	/* disallow softclock */
51#define	splzs()		splraise5()	/* disallow serial interrupts */
52
53/* watch out for side effects */
54#define splx(s)         ((s) & PSL_IPL ? _spl(s) : spl0())
55
56#define	IPL_NONE	0
57#define	IPL_SOFTCLOCK	(PSL_S|PSL_IPL1)
58#define	IPL_SOFTNET	(PSL_S|PSL_IPL1)
59#define	IPL_BIO		(PSL_S|PSL_IPL3)
60#define	IPL_NET		(PSL_S|PSL_IPL4)
61#define	IPL_TTY		(PSL_S|PSL_IPL4)
62#define	IPL_VM		(PSL_S|PSL_IPL4)
63#define	IPL_CLOCK	(PSL_S|PSL_IPL6)
64#define	IPL_STATCLOCK	(PSL_S|PSL_IPL6)
65#define	IPL_SCHED	(PSL_S|PSL_IPL7)
66#define	IPL_HIGH	(PSL_S|PSL_IPL7)
67#define	IPL_LOCK	(PSL_S|PSL_IPL7)
68
69typedef int ipl_t;
70typedef struct {
71	ipl_t _ipl;
72} ipl_cookie_t;
73
74static inline ipl_cookie_t
75makeiplcookie(ipl_t ipl)
76{
77
78	return (ipl_cookie_t){._ipl = ipl};
79}
80
81static inline int
82splraiseipl(ipl_cookie_t icookie)
83{
84
85	return _splraise(icookie._ipl);
86}
87
88#include <sys/spl.h>
89
90/*
91 * simulated software interrupt register
92 */
93extern unsigned char ssir;
94
95#define SIR_NET		0x1
96#define SIR_CLOCK	0x2
97#define SIR_SERIAL	0x4
98#define SIR_KBD		0x8
99
100#define siroff(x)	ssir &= ~(x)
101#define setsoftnet()	ssir |= SIR_NET
102#define setsoftclock()	ssir |= SIR_CLOCK
103#define setsoftserial() ssir |= SIR_SERIAL
104#define setsoftkbd()    ssir |= SIR_KBD
105
106#endif /* _KERNEL && ! _LOCORE */
107#endif
108