intr.h revision 1.12 
1/*	$NetBSD: intr.h,v 1.12 2008/01/04 22:54:46 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 _ALGOR_INTR_H_
40#define _ALGOR_INTR_H_
41
42#include <sys/evcnt.h>
43#include <sys/queue.h>
44
45#define	IPL_NONE	0	/* disable only this interrupt */
46#define	IPL_SOFTCLOCK	1	/* generic software interrupts (SI 0) */
47#define	IPL_SOFTBIO	1	/* clock software interrupts (SI 0) */
48#define	IPL_SOFTNET	2	/* network software interrupts (SI 1) */
49#define	IPL_SOFTSERIAL	2	/* serial software interrupts (SI 1) */
50#define	IPL_VM		3
51#define	IPL_SCHED	4
52#define	IPL_HIGH	4	/* disable all interrupts */
53
54#define	_IPL_N		5
55
56#define	_IPL_SI0_FIRST	IPL_SOFTCLOCK
57#define	_IPL_SI0_LAST	IPL_SOFTBIO
58
59#define	_IPL_SI1_FIRST	IPL_SOFTNET
60#define	_IPL_SI1_LAST	IPL_SOFTSERIAL
61
62#define	IST_UNUSABLE	-1	/* interrupt cannot be used */
63#define	IST_NONE	0	/* none (dummy) */
64#define	IST_PULSE	1	/* pulsed */
65#define	IST_EDGE	2	/* edge-triggered */
66#define	IST_LEVEL	3	/* level-triggered */
67
68#ifdef	_KERNEL
69
70#include <mips/locore.h>
71
72extern const u_int32_t ipl_sr_bits[_IPL_N];
73
74#define	spl0()		(void) _spllower(0)
75#define	splx(s)		(void) _splset(s)
76
77typedef int ipl_t;
78typedef struct {
79	ipl_t _sr;
80} ipl_cookie_t;
81
82static inline ipl_cookie_t
83makeiplcookie(ipl_t ipl)
84{
85
86	return (ipl_cookie_t){._sr = ipl_sr_bits[ipl]};
87}
88
89static inline int
90splraiseipl(ipl_cookie_t icookie)
91{
92
93	return _splraise(icookie._sr);
94}
95
96#include <sys/spl.h>
97
98struct algor_intrhand {
99	LIST_ENTRY(algor_intrhand) ih_q;
100	int (*ih_func)(void *);
101	void *ih_arg;
102	int ih_irq;		/* mostly for ISA */
103	const void *ih_irqmap;
104};
105
106#include <mips/softintr.h>
107
108extern struct evcnt mips_int5_evcnt;
109
110void	intr_init(void);
111void	*(*algor_intr_establish)(int, int (*)(void *), void *);
112void	(*algor_intr_disestablish)(void *);
113
114#endif /* _KERNEL */
115#endif /* ! _ALGOR_INTR_H_ */
116