intr.h revision 1.14 
1/*	$NetBSD: intr.h,v 1.14 2007/12/03 15:33:33 ad 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 _EVBMIPS_INTR_H_
40#define	_EVBMIPS_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_SOFTCLOCK	1	/* software interrupts */
48#define	IPL_SOFTBIO	1	/* software interrupts */
49#define	IPL_SOFTNET	2	/* software interrupts */
50#define	IPL_SOFTSERIAL	2	/* software interrupts */
51#define	IPL_VM		3
52#define	IPL_SCHED	4
53#define	IPL_HIGH	4
54
55#define	_IPL_N		5	/* max IPL + 1 */
56
57#define	_IPL_SI0_FIRST	IPL_SOFTCLOCK
58#define	_IPL_SI0_LAST	IPL_SOFTBIO
59
60#define	_IPL_SI1_FIRST	IPL_SOFTNET
61#define	_IPL_SI1_LAST	IPL_SOFTSERIAL
62
63#define	IST_UNUSABLE	-1	/* interrupt cannot be used */
64#define	IST_NONE	0	/* none (dummy) */
65#define	IST_PULSE	1	/* pulsed */
66#define	IST_EDGE	2	/* edge-triggered */
67#define	IST_LEVEL	3	/* level-triggered */
68#define	IST_LEVEL_HIGH	4	/* level triggered, active high */
69#define	IST_LEVEL_LOW	5       /* level triggered, active low */
70
71#ifdef	_KERNEL
72
73#include <mips/locore.h>
74
75extern const uint32_t ipl_sr_bits[_IPL_N];
76
77#define	spl0()		(void) _spllower(0)
78#define	splx(s)		(void) _splset(s)
79
80#define	splsoft()	_splraise(ipl_sr_bits[IPL_SOFT])
81
82typedef int ipl_t;
83typedef struct {
84	ipl_t _sr;
85} ipl_cookie_t;
86
87static inline ipl_cookie_t
88makeiplcookie(ipl_t ipl)
89{
90
91	return (ipl_cookie_t){._sr = ipl_sr_bits[ipl]};
92}
93
94static inline int
95splraiseipl(ipl_cookie_t icookie)
96{
97
98	return _splraise(icookie._sr);
99}
100
101#include <sys/spl.h>
102
103struct evbmips_intrhand {
104	LIST_ENTRY(evbmips_intrhand) ih_q;
105	int (*ih_func)(void *);
106	void *ih_arg;
107	int ih_irq;
108};
109
110#include <mips/softintr.h>
111
112void	evbmips_intr_init(void);
113void	intr_init(void);
114void	evbmips_iointr(uint32_t, uint32_t, uint32_t, uint32_t);
115void	*evbmips_intr_establish(int, int (*)(void *), void *);
116void	evbmips_intr_disestablish(void *);
117#endif /* _KERNEL */
118#endif /* ! _EVBMIPS_INTR_H_ */
119