1/*	$NetBSD: intr.h,v 1.25 2008/04/28 20:23:35 martin 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 _SH3_INTR_H_
30#define	_SH3_INTR_H_
31
32#include <sh3/psl.h>
33
34/* Interrupt sharing types. */
35#define	IST_NONE		0	/* none */
36#define	IST_PULSE		1	/* pulsed */
37#define	IST_EDGE		2	/* edge-triggered */
38#define	IST_LEVEL		3	/* level-triggered */
39
40/* Interrupt priority levels */
41#define	_IPL_N		16
42#define	_IPL_NSOFT	4
43
44#define	IPL_NONE	0	/* nothing */
45#define	IPL_SOFTCLOCK	1
46#define	IPL_SOFTBIO	2	/* timeouts */
47#define	IPL_SOFTNET	3	/* protocol stacks */
48#define	IPL_SOFTSERIAL	4	/* serial */
49
50struct intc_intrhand {
51	int	(*ih_func)(void *);
52	void	*ih_arg;
53	int	ih_level;	/* SR.I[0:3] value */
54	int	ih_evtcode;	/* INTEVT or INTEVT2(SH7709/SH7709A) */
55	int	ih_idx;		/* evtcode -> intrhand mapping */
56};
57
58/* from 0x200 by 0x20 -> from 0 by 1 */
59#define	EVTCODE_TO_MAP_INDEX(x)		(((x) >> 5) - 0x10)
60#define	EVTCODE_TO_IH_INDEX(x)						\
61	__intc_evtcode_to_ih[EVTCODE_TO_MAP_INDEX(x)]
62#define	EVTCODE_IH(x)	(&__intc_intrhand[EVTCODE_TO_IH_INDEX(x)])
63extern int8_t __intc_evtcode_to_ih[];
64extern struct intc_intrhand __intc_intrhand[];
65
66void intc_init(void);
67void *intc_intr_establish(int, int, int, int (*)(void *), void *);
68void intc_intr_disestablish(void *);
69void intc_intr_enable(int);
70void intc_intr_disable(int);
71void intc_intr(int, int, int);
72
73void intpri_intr_priority(int evtcode, int level);
74
75#endif /* !_SH3_INTR_H_ */
76