isr.h revision 1.4 
1/*	$OpenBSD: isr.h,v 1.4 2008/06/26 05:42:11 ray Exp $	*/
2/*	$NetBSD: isr.h,v 1.1 2000/01/05 08:49:04 nisimura Exp $	*/
3
4/*-
5 * Copyright (c) 1996 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Jason R. Thorpe.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <sys/evcount.h>
34#include <sys/queue.h>
35
36/*
37 * The max size of the autovectored interrupt.
38 */
39#define NISRAUTOVEC	8
40
41/*
42 * Autovectored interrupt handler cookie.
43 */
44struct isr_autovec {
45	LIST_ENTRY(isr_autovec) isr_link;
46	int		(*isr_func)(void *);
47	void		*isr_arg;
48	int		isr_ipl;
49	int		isr_priority;
50	struct evcount	isr_count;
51};
52
53typedef LIST_HEAD(, isr_autovec) isr_autovec_list_t;
54
55/*
56 * Autovectored ISR priorities.  These are not the same as interrupt levels.
57 */
58#define ISRPRI_BIO		0
59#define ISRPRI_NET		1
60#define ISRPRI_TTY		2
61#define ISRPRI_TTYNOBUF		3
62
63void	isrinit(void);
64void	isrlink_autovec(int (*)(void *), void *, int, int, const char *);
65void	isrdispatch_autovec(int);
66