1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
/* $OpenBSD: softintr.h,v 1.1 2016/12/17 23:38:33 patrick Exp $ */
/* $NetBSD: softintr.h,v 1.1 2002/01/29 22:54:14 thorpej Exp $ */
/*-
* Copyright (c) 1998, 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum, and by Jason R. Thorpe.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _MACHINE_SOFTINTR_H_
#define _MACHINE_SOFTINTR_H_
#ifdef _KERNEL
#include <sys/mutex.h>
#include <sys/queue.h>
/*
* Generic software interrupt support for all AArch64 platforms.
*
* To use this code, include <machine/softintr.h> from your platform's
* <machine/intr.h>.
*/
#define SIR_SOFT 0 /* for IPL_SOFT */
#define SIR_CLOCK 1 /* for IPL_SOFTCLOCK */
#define SIR_NET 2 /* for IPL_SOFTNET */
#define SIR_TTY 3 /* for IPL_SOFTTTY */
#define SI_NSOFTINTR 4
struct soft_intrhand {
TAILQ_ENTRY(soft_intrhand)
sih_q;
struct soft_intr *sih_intrhead;
void (*sih_fn)(void *);
void (*sih_fnwrap)(void *);
void *sih_arg;
void *sih_argwrap;
int sih_pending;
};
struct soft_intr {
TAILQ_HEAD(, soft_intrhand)
softintr_q;
int softintr_ssir;
struct mutex softintr_lock;
};
#define SOFTINTR_ESTABLISH_MPSAFE 0x01
void *softintr_establish_flags(int, void (*)(void *), void *, int);
#define softintr_establish(i, f, a) \
softintr_establish_flags(i, f, a, 0)
#define softintr_establish_mpsafe(i, f, a) \
softintr_establish_flags(i, f, a, SOFTINTR_ESTABLISH_MPSAFE)
void softintr_disestablish(void *);
void softintr_init(void);
void softintr_dispatch(int);
void softintr(int);
#define softintr_schedule(arg) \
do { \
struct soft_intrhand *__sih = (arg); \
struct soft_intr *__si = __sih->sih_intrhead; \
\
mtx_enter(&__si->softintr_lock); \
if (__sih->sih_pending == 0) { \
TAILQ_INSERT_TAIL(&__si->softintr_q, __sih, sih_q); \
__sih->sih_pending = 1; \
softintr(__si->softintr_ssir); \
} \
mtx_leave(&__si->softintr_lock); \
} while (/*CONSTCOND*/ 0)
#endif /* _KERNEL */
#endif /* _MACHINE_SOFTINTR_H_ */
|
