intr.h revision 1.17 
1/*	$NetBSD: intr.h,v 1.17 2007/03/09 06:45:20 thorpej Exp $	*/
2
3/*
4 * Copyright (c) 2001, 2003 Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Written by Jason R. Thorpe for Wasabi Systems, Inc.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 *    must display the following acknowledgement:
19 *	This product includes software developed for the NetBSD Project by
20 *	Wasabi Systems, Inc.
21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
22 *    or promote products derived from this software without specific prior
23 *    written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
36 */
37
38#ifndef	_EVBARM_INTR_H_
39#define	_EVBARM_INTR_H_
40
41#ifdef _KERNEL
42
43/* Interrupt priority "levels". */
44#define	IPL_NONE	0	/* nothing */
45#define	IPL_SOFT	1	/* generic software interrupts */
46#define	IPL_SOFTCLOCK	2	/* software clock interrupt */
47#define	IPL_SOFTNET	3	/* software network interrupt */
48#define	IPL_BIO		4	/* block I/O */
49#define	IPL_NET		5	/* network */
50#define	IPL_SOFTSERIAL	6	/* software serial interrupt */
51#define	IPL_TTY		7	/* terminals */
52#define	IPL_VM		8	/* memory allocation */
53#define	IPL_AUDIO	9	/* audio device */
54#define	IPL_CLOCK	10	/* clock interrupt */
55#define	IPL_STATCLOCK	11	/* statistics clock interrupt */
56#define	IPL_HIGH	12	/* everything */
57#define	IPL_SCHED	IPL_HIGH
58#define	IPL_LOCK	IPL_HIGH
59#define	IPL_SERIAL	13	/* serial device */
60
61#define	NIPL		14
62
63/* Interrupt sharing types. */
64#define	IST_NONE	0	/* none */
65#define	IST_PULSE	1	/* pulsed */
66#define	IST_EDGE	2	/* edge-triggered */
67#define	IST_LEVEL	3	/* level-triggered */
68
69#define IST_LEVEL_LOW	 IST_LEVEL
70#define IST_LEVEL_HIGH   4
71#define IST_EDGE_FALLING IST_EDGE
72#define IST_EDGE_RISING  5
73#define IST_EDGE_BOTH    6
74
75#ifdef __OLD_INTERRUPT_CODE	/* XXX XXX XXX */
76
77/* Software interrupt priority levels */
78
79#define SOFTIRQ_CLOCK   0
80#define SOFTIRQ_NET     1
81#define SOFTIRQ_SERIAL  2
82
83#define SOFTIRQ_BIT(x)  (1 << x)
84
85#include <arm/arm32/psl.h>
86
87#else /* ! __OLD_INTERRUPT_CODE */
88
89#define	__NEWINTR	/* enables new hooks in cpu_fork()/cpu_switch() */
90
91#ifndef _LOCORE
92
93#include <sys/device.h>
94#include <sys/queue.h>
95
96#if defined(_LKM)
97
98int	_splraise(int);
99int	_spllower(int);
100void	splx(int);
101void	_setsoftintr(int);
102
103#else	/* _LKM */
104
105#include "opt_arm_intr_impl.h"
106
107#if defined(ARM_INTR_IMPL)
108
109/*
110 * Each board needs to define the following functions:
111 *
112 * int	_splraise(int);
113 * int	_spllower(int);
114 * void	splx(int);
115 * void	_setsoftintr(int);
116 *
117 * These may be defined as functions, static inline functions, or macros,
118 * but there must be a _spllower() and splx() defined as functions callable
119 * from assembly language (for cpu_switch()).  However, since it's quite
120 * useful to be able to inline splx(), you could do something like the
121 * following:
122 *
123 * in <boardtype>_intr.h:
124 * 	static inline int
125 *	boardtype_splx(int spl)
126 *	{...}
127 *
128 *	#define splx(nspl)	boardtype_splx(nspl)
129 *	...
130 * and in boardtype's machdep code:
131 *
132 *	...
133 *	#undef splx
134 *	int
135 *	splx(int spl)
136 *	{
137 *		return boardtype_splx(spl);
138 *	}
139 */
140
141#include ARM_INTR_IMPL
142
143#else /* ARM_INTR_IMPL */
144
145#error ARM_INTR_IMPL not defined.
146
147#endif	/* ARM_INTR_IMPL */
148
149#endif /* _LKM */
150
151#define	splsoft()	_splraise(IPL_SOFT)
152
153typedef uint8_t ipl_t;
154typedef struct {
155	ipl_t _ipl;
156} ipl_cookie_t;
157
158static inline ipl_cookie_t
159makeiplcookie(ipl_t ipl)
160{
161
162	return (ipl_cookie_t){._ipl = ipl};
163}
164
165static inline int
166splraiseipl(ipl_cookie_t icookie)
167{
168
169	return _splraise(icookie._ipl);
170}
171
172#define	spl0()		_spllower(IPL_NONE)
173
174#include <sys/spl.h>
175
176/* Use generic software interrupt support. */
177#include <arm/softintr.h>
178
179#endif /* ! _LOCORE */
180
181#endif /* __OLD_INTERRUPT_CODE */
182
183#endif /* _KERNEL */
184
185#endif	/* _EVBARM_INTR_H_ */
186