intr.h revision 1.19 
1/* 	$NetBSD: intr.h,v 1.19 2014/02/04 18:51:16 matt Exp $	*/
2
3/*
4 * Copyright (c) 1997 Mark Brinicombe.
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 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *	This product includes software developed by Mark Brinicombe
18 *	for the NetBSD Project.
19 * 4. The name of the company nor the name of the author may be used to
20 *    endorse or promote products derived from this software without specific
21 *    prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#ifndef _HPCARM_INTR_H_
37#define _HPCARM_INTR_H_
38
39#ifdef _KERNEL
40
41#define IPL_NONE	0
42#define IPL_SOFTCLOCK	1
43#define IPL_SOFTBIO	2
44#define IPL_SOFTNET	3
45#define IPL_SOFTSERIAL	4
46#define IPL_VM		5
47#define IPL_SCHED	6
48#define IPL_HIGH	7
49
50#define NIPL		8
51
52#define	IST_UNUSABLE	-1	/* interrupt cannot be used */
53#define	IST_NONE	0	/* none (dummy) */
54#define	IST_PULSE	1	/* pulsed */
55#define	IST_EDGE	2	/* edge-triggered */
56#define	IST_LEVEL	3	/* level-triggered */
57
58#define	IST_LEVEL_LOW	IST_LEVEL
59#define	IST_LEVEL_HIGH	4
60#define	IST_EDGE_FALLING IST_EDGE
61#define	IST_EDGE_RISING	5
62#define	IST_EDGE_BOTH	6
63
64#ifdef __OLD_INTERRUPT_CODE	/* XXX XXX XXX */
65
66#include <machine/irqhandler.h>
67#include <arm/arm32/psl.h>
68
69#else	/* !__OLD_INTERRUPT_CODE */
70
71#ifndef _LOCORE
72
73#include <sys/queue.h>
74
75#if defined(_LKM)
76
77int	_splraise(int);
78int	_spllower(int);
79void	splx(int);
80
81#else	/* _LKM */
82
83#include "opt_arm_intr_impl.h"
84
85#if defined(ARM_INTR_IMPL)
86
87/*
88 * Each board needs to define the following functions:
89 *
90 * int	_splraise(int);
91 * int	_spllower(int);
92 * void	splx(int);
93 * void	_setsoftintr(int);
94 *
95 * These may be defined as functions, static inline functions, or macros,
96 * but there must be a _spllower() and splx() defined as functions callable
97 * from assembly language (for cpu_switch()).  However, since it's quite
98 * useful to be able to inline splx(), you could do something like the
99 * following:
100 *
101 * in <boardtype>_intr.h:
102 * 	static inline int
103 *	boardtype_splx(int spl)
104 *	{...}
105 *
106 *	#define splx(nspl)	boardtype_splx(nspl)
107 *	...
108 * and in boardtype's machdep code:
109 *
110 *	...
111 *	#undef splx
112 *	int
113 *	splx(int spl)
114 *	{
115 *		return boardtype_splx(spl);
116 *	}
117 */
118
119#include ARM_INTR_IMPL
120
121#else	/* ARM_INTR_IMPL */
122
123#error ARM_INTR_IMPL not defined.
124
125#endif	/* ARM_INTR_IMPL */
126
127#endif	/* _LKM */
128
129#define splsoft()	_splraise(IPL_SOFT)
130
131typedef uint8_t ipl_t;
132typedef struct {
133	ipl_t _ipl;
134} ipl_cookie_t;
135
136static inline ipl_cookie_t
137makeiplcookie(ipl_t ipl)
138{
139
140	return (ipl_cookie_t){._ipl = ipl};
141}
142
143static inline int
144splraiseipl(ipl_cookie_t icookie)
145{
146
147	return _splraise(icookie._ipl);
148}
149
150#define	spl0()		_spllower(IPL_NONE)
151
152#include <sys/spl.h>
153
154#endif	/* ! _LOCORE */
155
156#endif	/* __OLD_INTERRUPT_CODE */
157
158#endif	/* _KERNEL */
159
160#endif	/* _HPCARM_INTR_H */
161