1/*	$NetBSD: intr.h,v 1.5 2007/12/11 16:51:13 ad Exp $	*/
2
3/*-
4 * Copyright (c) 2002 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef _LANDISK_INTR_H_
30#define _LANDISK_INTR_H_
31
32#include <sh3/intr.h>
33
34/* Number of interrupt source */
35#define _INTR_N		16
36
37/* Interrupt priority levels */
38#define	IPL_VM		12	/* low i/o */
39#define	IPL_SCHED	14	/* clock */
40#define	IPL_HIGH	15	/* everything */
41
42typedef uint8_t ipl_t;
43typedef struct {
44	ipl_t _ipl;
45} ipl_cookie_t;
46
47static inline ipl_cookie_t
48makeiplcookie(ipl_t ipl)
49{
50
51	return (ipl_cookie_t){._ipl = ipl << 4};
52}
53
54static inline int
55splraiseipl(ipl_cookie_t icookie)
56{
57
58	return _cpu_intr_raise(icookie._ipl);
59}
60
61#include <sys/spl.h>
62
63#define	spl0()			_cpu_intr_resume(IPL_NONE << 4)
64#define	splx(x)			_cpu_intr_resume(x)
65
66void intr_init(void);
67void *extintr_establish(int irq, int level, int (*func)(void *), void *arg);
68void extintr_disestablish(void *ih);
69void extintr_enable(void *ih);
70void extintr_disable(void *ih);
71void extintr_disable_by_num(int irq);
72
73#endif /* !_LANDISK_INTR_H_ */
74