1 /* $NetBSD: intr.h,v 1.19 2022/07/11 09:39:10 martin Exp $ */
2
3 /*-
4 * Copyright (c) 2007 Michael Lorenz
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 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #ifndef _LOCORE
30 #include <sys/cdefs.h>
31 __KERNEL_RCSID(0, "$NetBSD: intr.h,v 1.19 2022/07/11 09:39:10 martin Exp $");
32 #endif
33
34 #ifndef _POWERPC_INTR_MACHDEP_H_
35 #define _POWERPC_INTR_MACHDEP_H_
36
37 #if 0 /* PR port-powerpc/56922: fast softints are broken on powerpc */
38 #define __HAVE_FAST_SOFTINTS 1
39 #endif
40
41
42 /* Interrupt priority `levels'. */
43 #define IPL_NONE 0 /* nothing */
44 #define IPL_SOFTCLOCK 1 /* timeouts */
45 #define IPL_SOFTBIO 2 /* block I/O */
46 #define IPL_SOFTNET 3 /* protocol stacks */
47 #define IPL_SOFTSERIAL 4 /* serial */
48 #define IPL_VM 5 /* memory allocation */
49 #define IPL_SCHED 6
50 #define IPL_HIGH 7 /* everything */
51 #define NIPL 8
52
53 /* Interrupt sharing types. */
54 #define IST_NONE 0 /* none */
55 #define IST_PULSE 1 /* pulsed */
56 #define IST_EDGE 2 /* falling edge triggered */
57 #define IST_LEVEL 3 /* low level triggered */
58
59 #define IST_EDGE_FALLING IST_EDGE
60 #define IST_EDGE_RISING 4 /* rising edge triggered */
61 #define IST_LEVEL_LOW IST_LEVEL
62 #define IST_LEVEL_HIGH 5 /* high level triggered */
63
64 #if !defined(_LOCORE)
65 void * intr_establish(int, int, int, int (*)(void *), void *);
66 void * intr_establish_xname(int, int, int, int (*)(void *), void *,
67 const char *);
68 void intr_disestablish(void *);
69 const char *
70 intr_typename(int);
71
72 int splraise(int);
73 int spllower(int);
74 void splx(int);
75
76 #if !defined(_MODULE)
77
78 #include <powerpc/softint.h>
79
80 void genppc_cpu_configure(void);
81
82 /*
83 * Interrupt handler chains. intr_establish() inserts a handler into
84 * the list. The handler is called with its (single) argument.
85 */
86 struct intrhand {
87 int (*ih_fun)(void *);
88 void *ih_arg;
89 struct intrhand *ih_next;
90 int ih_ipl;
91 int ih_virq;
92 char ih_xname[INTRDEVNAMEBUF];
93 };
94
95 void softint_fast_dispatch(struct lwp *, int);
96
97 #ifdef __HAVE_FAST_SOFTINTS
98 #define softint_init_md powerpc_softint_init_md
99 #define softint_trigger powerpc_softint_trigger
100 #endif
101
102 #ifdef __IMASK_T
103 typedef __IMASK_T imask_t;
104 #else
105 typedef uint32_t imask_t;
106 #endif
107
108 #define NVIRQ (sizeof(imask_t)*8) /* 32 virtual IRQs */
109 #ifndef NIRQ
110 #define NIRQ 256 /* up to 256 HW IRQs */
111 #endif
112
113 #define HWIRQ_MAX (NVIRQ - 1)
114 #define HWIRQ_MASK (~(imask_t)0 >> 1)
115
116 #define PIC_VIRQ_TO_MASK(v) __BIT(HWIRQ_MAX - (v))
117 #define PIC_VIRQ_MS_PENDING(p) __builtin_clz(p)
118
119 #endif /* !_MODULE */
120
121 #define spl0() spllower(0)
122
123 typedef int ipl_t;
124 typedef struct {
125 ipl_t _ipl;
126 } ipl_cookie_t;
127
128 static __inline ipl_cookie_t
makeiplcookie(ipl_t ipl)129 makeiplcookie(ipl_t ipl)
130 {
131
132 return (ipl_cookie_t){._ipl = ipl};
133 }
134
135 static __inline int
splraiseipl(ipl_cookie_t icookie)136 splraiseipl(ipl_cookie_t icookie)
137 {
138
139 return splraise(icookie._ipl);
140 }
141
142 #include <sys/spl.h>
143
144 #endif /* _LOCORE */
145
146 #endif /* _POWERPC_INTR_MACHDEP_H_ */
147