1/* 	$NetBSD$	*/
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#define	__NEWINTR	/* enables new hooks in cpu_fork()/cpu_switch() */
72
73#ifndef _LOCORE
74
75#include <sys/queue.h>
76
77#if defined(_LKM)
78
79int	_splraise(int);
80int	_spllower(int);
81void	splx(int);
82void	_setsoftintr(int);
83
84#else	/* _LKM */
85
86#include "opt_arm_intr_impl.h"
87
88#if defined(ARM_INTR_IMPL)
89
90/*
91 * Each board needs to define the following functions:
92 *
93 * int	_splraise(int);
94 * int	_spllower(int);
95 * void	splx(int);
96 * void	_setsoftintr(int);
97 *
98 * These may be defined as functions, static inline functions, or macros,
99 * but there must be a _spllower() and splx() defined as functions callable
100 * from assembly language (for cpu_switch()).  However, since it's quite
101 * useful to be able to inline splx(), you could do something like the
102 * following:
103 *
104 * in <boardtype>_intr.h:
105 * 	static inline int
106 *	boardtype_splx(int spl)
107 *	{...}
108 *
109 *	#define splx(nspl)	boardtype_splx(nspl)
110 *	...
111 * and in boardtype's machdep code:
112 *
113 *	...
114 *	#undef splx
115 *	int
116 *	splx(int spl)
117 *	{
118 *		return boardtype_splx(spl);
119 *	}
120 */
121
122#include ARM_INTR_IMPL
123
124#else	/* ARM_INTR_IMPL */
125
126#error ARM_INTR_IMPL not defined.
127
128#endif	/* ARM_INTR_IMPL */
129
130#endif	/* _LKM */
131
132#define splsoft()	_splraise(IPL_SOFT)
133
134typedef uint8_t ipl_t;
135typedef struct {
136	ipl_t _ipl;
137} ipl_cookie_t;
138
139static inline ipl_cookie_t
140makeiplcookie(ipl_t ipl)
141{
142
143	return (ipl_cookie_t){._ipl = ipl};
144}
145
146static inline int
147splraiseipl(ipl_cookie_t icookie)
148{
149
150	return _splraise(icookie._ipl);
151}
152
153#define	spl0()		_spllower(IPL_NONE)
154
155#include <sys/spl.h>
156
157#endif	/* ! _LOCORE */
158
159#endif	/* __OLD_INTERRUPT_CODE */
160
161#endif	/* _KERNEL */
162
163#endif	/* _HPCARM_INTR_H */
164