intr.h revision 1.3 
1/*	$NetBSD: intr.h,v 1.3 2018/04/19 21:50:06 christos Exp $	*/
2
3/*-
4 * Copyright (c) 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe and Steve C. Woodford.
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 _EVBCF_INTR_H
33#define _EVBCF_INTR_H
34
35#include <machine/psl.h>
36
37#define	IPL_NONE	0	/* disable only this interrupt */
38#define	IPL_SOFTCLOCK	1	/* clock software interrupts */
39#define	IPL_SOFTBIO	2	/* block software interrupts */
40#define	IPL_SOFTNET	3	/* network software interrupts */
41#define	IPL_SOFTSERIAL	4	/* serial software interrupts */
42#define	IPL_VM		5
43#define	IPL_SCHED	6
44#define	IPL_HIGH	7
45#define	NIPL		8
46
47#ifdef _KERNEL
48#define spl0()			_spl0()
49#define splsoftclock()		splraise1()
50#define splsoftbio()		splraise1()
51#define splsoftnet()		splraise1()
52#define splsoftserial()		splraise1()
53#define splvm()			splraise3()
54#define splsched()		spl7()
55#define splhigh()		spl7()
56
57#ifndef _LOCORE
58
59extern const uint16_t ipl2psl_table[NIPL];
60
61typedef int ipl_t;
62typedef struct {
63	uint16_t _psl;
64} ipl_cookie_t;
65
66static __inline ipl_cookie_t
67makeiplcookie(ipl_t ipl)
68{
69
70	return (ipl_cookie_t){._psl = ipl2psl_table[ipl]};
71}
72
73static __inline int
74splraiseipl(ipl_cookie_t icookie)
75{
76
77	return _splraise(icookie._psl);
78}
79
80static __inline void
81splx(int sr)
82{
83
84	__asm volatile("movw %0,%%sr" : : "di" (sr));
85}
86
87#endif /* !_LOCORE */
88#endif /* _KERNEL */
89
90#endif /* _EVBCF_INTR_H */
91