1 /* $NetBSD: intr.h,v 1.22 2021/06/05 21:24:17 christos 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(_MODULE)
76
77 int _splraise(int);
78 int _spllower(int);
79 void splx(int);
80
81 #else /* _MODULE */
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 /* _MODULE */
128
129 typedef uint8_t ipl_t;
130 typedef struct {
131 ipl_t _ipl;
132 } ipl_cookie_t;
133
134 static inline ipl_cookie_t
makeiplcookie(ipl_t ipl)135 makeiplcookie(ipl_t ipl)
136 {
137
138 return (ipl_cookie_t){._ipl = ipl};
139 }
140
141 static inline int
splraiseipl(ipl_cookie_t icookie)142 splraiseipl(ipl_cookie_t icookie)
143 {
144
145 return _splraise(icookie._ipl);
146 }
147
148 #define spl0() _spllower(IPL_NONE)
149
150 #include <sys/spl.h>
151
152 #endif /* ! _LOCORE */
153
154 #endif /* __OLD_INTERRUPT_CODE */
155
156 #endif /* _KERNEL */
157
158 #endif /* _HPCARM_INTR_H */
159