intr.h revision 1.7 
1/*	$NetBSD: intr.h,v 1.7 2006/12/21 15:55:21 yamt Exp $	*/
2
3/*-
4 * Copyright (c) 2000, 2001 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by 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 _ALGOR_INTR_H_
40#define _ALGOR_INTR_H_
41
42#include <sys/device.h>
43#include <sys/lock.h>
44#include <sys/queue.h>
45
46#define	IPL_NONE	0	/* disable only this interrupt */
47#define	IPL_SOFT	1	/* generic software interrupts (SI 0) */
48#define	IPL_SOFTCLOCK	2	/* clock software interrupts (SI 0) */
49#define	IPL_SOFTNET	3	/* network software interrupts (SI 1) */
50#define	IPL_SOFTSERIAL	4	/* serial software interrupts (SI 1) */
51#define	IPL_BIO		5	/* disable block I/O interrupts */
52#define	IPL_NET		6	/* disable network interrupts */
53#define	IPL_TTY		7	/* disable terminal interrupts */
54#define	IPL_LPT		IPL_TTY
55#define	IPL_VM		IPL_TTY
56#define	IPL_SERIAL	7	/* disable serial interrupts */
57#define	IPL_CLOCK	8	/* disable clock interrupts */
58#define	IPL_STATCLOCK	IPL_CLOCK
59#define	IPL_SCHED	IPL_CLOCK
60#define	IPL_HIGH	8	/* disable all interrupts */
61#define	IPL_LOCK	IPL_HIGH
62
63#define	_IPL_N		9
64
65#define	_IPL_SI0_FIRST	IPL_SOFT
66#define	_IPL_SI0_LAST	IPL_SOFTCLOCK
67
68#define	_IPL_SI1_FIRST	IPL_SOFTNET
69#define	_IPL_SI1_LAST	IPL_SOFTSERIAL
70
71#define	SI_SOFT		0
72#define	SI_SOFTCLOCK	1
73#define	SI_SOFTNET	2
74#define	SI_SOFTSERIAL	3
75
76#define	SI_NQUEUES	4
77
78#define	SI_QUEUENAMES {							\
79	"misc",								\
80	"clock",							\
81	"net",								\
82	"serial",							\
83}
84
85#define	IST_UNUSABLE	-1	/* interrupt cannot be used */
86#define	IST_NONE	0	/* none (dummy) */
87#define	IST_PULSE	1	/* pulsed */
88#define	IST_EDGE	2	/* edge-triggered */
89#define	IST_LEVEL	3	/* level-triggered */
90
91#ifdef	_KERNEL
92
93extern const u_int32_t ipl_sr_bits[_IPL_N];
94
95int _splraise(int);
96int _spllower(int);
97int _splset(int);
98int _splget(void);
99void _splnone(void);
100void _setsoftintr(int);
101void _clrsoftintr(int);
102
103#define	spl0()		(void) _spllower(0)
104#define	splx(s)		(void) _splset(s)
105
106#define	splsoft()	_splraise(ipl_sr_bits[IPL_SOFT])
107
108#define	spllowersoftclock() _spllower(ipl_sr_bits[IPL_SOFTCLOCK])
109
110typedef int ipl_t;
111typedef struct {
112	ipl_t _sr;
113} ipl_cookie_t;
114
115static inline ipl_cookie_t
116makeiplcookie(ipl_t ipl)
117{
118
119	return (ipl_cookie_t){._sr = ipl_sr_bits[ipl]};
120}
121
122static inline int
123splraiseipl(ipl_cookie_t icookie)
124{
125
126	return _splraise(icookie._sr);
127}
128
129#include <sys/spl.h>
130
131struct algor_intrhand {
132	LIST_ENTRY(algor_intrhand) ih_q;
133	int (*ih_func)(void *);
134	void *ih_arg;
135	int ih_irq;		/* mostly for ISA */
136	const void *ih_irqmap;
137};
138
139#include <mips/softintr.h>
140
141extern struct evcnt mips_int5_evcnt;
142
143void	intr_init(void);
144void	*(*algor_intr_establish)(int, int (*)(void *), void *);
145void	(*algor_intr_disestablish)(void *);
146
147#endif /* _KERNEL */
148#endif /* ! _ALGOR_INTR_H_ */
149