intr.h revision 1.9 
1/*	$NetBSD: intr.h,v 1.9 2007/06/17 06:04:27 tsutsui 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/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_SOFT	1	/* generic software interrupts (SI 0) */
48#define	IPL_SOFTCLOCK	2	/* clock software interrupts (SI 0) */
49#define	IPL_SOFTNET	3	/* network software interrupts (SI 1) */
50#define	IPL_SOFTSERIAL	4	/* serial software interrupts (SI 1) */
51#define	IPL_BIO		5	/* disable block I/O interrupts */
52#define	IPL_NET		6	/* disable network interrupts */
53#define	IPL_TTY		7	/* disable terminal interrupts */
54#define	IPL_LPT		IPL_TTY
55#define	IPL_VM		IPL_TTY
56#define	IPL_SERIAL	7	/* disable serial interrupts */
57#define	IPL_CLOCK	8	/* disable clock interrupts */
58#define	IPL_STATCLOCK	IPL_CLOCK
59#define	IPL_SCHED	IPL_CLOCK
60#define	IPL_HIGH	8	/* disable all interrupts */
61#define	IPL_LOCK	IPL_HIGH
62
63#define	_IPL_N		9
64
65#define	_IPL_SI0_FIRST	IPL_SOFT
66#define	_IPL_SI0_LAST	IPL_SOFTCLOCK
67
68#define	_IPL_SI1_FIRST	IPL_SOFTNET
69#define	_IPL_SI1_LAST	IPL_SOFTSERIAL
70
71#define	SI_SOFT		0
72#define	SI_SOFTCLOCK	1
73#define	SI_SOFTNET	2
74#define	SI_SOFTSERIAL	3
75
76#define	SI_NQUEUES	4
77
78#define	SI_QUEUENAMES {							\
79	"misc",								\
80	"clock",							\
81	"net",								\
82	"serial",							\
83}
84
85#define	IST_UNUSABLE	-1	/* interrupt cannot be used */
86#define	IST_NONE	0	/* none (dummy) */
87#define	IST_PULSE	1	/* pulsed */
88#define	IST_EDGE	2	/* edge-triggered */
89#define	IST_LEVEL	3	/* level-triggered */
90
91#ifdef	_KERNEL
92
93#include <mips/locore.h>
94
95extern const u_int32_t ipl_sr_bits[_IPL_N];
96
97#define	spl0()		(void) _spllower(0)
98#define	splx(s)		(void) _splset(s)
99
100#define	splsoft()	_splraise(ipl_sr_bits[IPL_SOFT])
101
102typedef int ipl_t;
103typedef struct {
104	ipl_t _sr;
105} ipl_cookie_t;
106
107static inline ipl_cookie_t
108makeiplcookie(ipl_t ipl)
109{
110
111	return (ipl_cookie_t){._sr = ipl_sr_bits[ipl]};
112}
113
114static inline int
115splraiseipl(ipl_cookie_t icookie)
116{
117
118	return _splraise(icookie._sr);
119}
120
121#include <sys/spl.h>
122
123struct algor_intrhand {
124	LIST_ENTRY(algor_intrhand) ih_q;
125	int (*ih_func)(void *);
126	void *ih_arg;
127	int ih_irq;		/* mostly for ISA */
128	const void *ih_irqmap;
129};
130
131#include <mips/softintr.h>
132
133extern struct evcnt mips_int5_evcnt;
134
135void	intr_init(void);
136void	*(*algor_intr_establish)(int, int (*)(void *), void *);
137void	(*algor_intr_disestablish)(void *);
138
139#endif /* _KERNEL */
140#endif /* ! _ALGOR_INTR_H_ */
141