FreeBSD/Linux Kernel Cross Reference
sys/sys/intr.h
1 /* $NetBSD: intr.h,v 1.21 2020/05/17 14:11:30 ad Exp $ */
2
3 /*-
4 * Copyright (c) 2007, 2020 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Andrew Doran.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #ifndef _SYS_INTR_H_
33 #define _SYS_INTR_H_
34
35 #define INTRIDBUF 64
36 #define INTRDEVNAMEBUF 256
37
38 #ifdef _KERNEL
39
40 #include <sys/types.h>
41
42 struct cpu_info;
43
44 /* Public interface. */
45 void *softint_establish(u_int, void (*)(void *), void *);
46 void softint_disestablish(void *);
47 void softint_schedule(void *);
48 void softint_schedule_cpu(void *, struct cpu_info *);
49
50 /* MI hooks. */
51 void softint_init(struct cpu_info *);
52 lwp_t *softint_picklwp(void);
53 void softint_block(lwp_t *);
54
55 /* MD-MI interface. */
56 void softint_init_md(lwp_t *, u_int, uintptr_t *);
57 #ifndef __HAVE_MD_SOFTINT_TRIGGER
58 void softint_trigger(uintptr_t);
59 #endif
60 void softint_dispatch(lwp_t *, int);
61
62 /* Flags for softint_establish(). */
63 #define SOFTINT_BIO 0x0000
64 #define SOFTINT_CLOCK 0x0001
65 #define SOFTINT_SERIAL 0x0002
66 #define SOFTINT_NET 0x0003
67 #define SOFTINT_MPSAFE 0x0100
68 #define SOFTINT_RCPU 0x0200
69
70 /* Implementation private flags. */
71 #define SOFTINT_PENDING 0x1000
72
73 #define SOFTINT_COUNT 0x0004
74 #define SOFTINT_LVLMASK 0x00ff
75 #define SOFTINT_IMPMASK 0xf000
76
77 extern u_int softint_timing;
78
79 /*
80 * Historical aliases.
81 */
82 #define IPL_BIO IPL_VM
83 #define IPL_NET IPL_VM
84 #define IPL_TTY IPL_VM
85 #define IPL_AUDIO IPL_SCHED
86 #define IPL_CLOCK IPL_SCHED
87 #define IPL_SERIAL IPL_HIGH
88
89 #define splbio() splvm()
90 #define splnet() splvm()
91 #define spltty() splvm()
92 #define splaudio() splsched()
93 #define splclock() splsched()
94 #define splserial() splhigh()
95
96 #include <machine/intr.h>
97
98 #elif defined(_KMEMUSER)
99 #define SOFTINT_COUNT 0x0004
100 #endif /* _KERNEL */
101
102 #endif /* _SYS_INTR_H_ */
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