intr.h revision 1.22 
1/*	$NetBSD: intr.h,v 1.22 2008/06/15 07:20:46 tsutsui Exp $	*/
2
3/*-
4 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Minoura Makoto and Jason R. Thorpe.
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 _NEWS68K_INTR_H_
33#define	_NEWS68K_INTR_H_
34
35#include <sys/device.h>
36#include <sys/queue.h>
37#include <machine/psl.h>
38#include <m68k/asm_single.h>
39
40#define	IPL_NONE	0
41#define	IPL_SOFTCLOCK	1
42#define	IPL_SOFTBIO	2
43#define	IPL_SOFTNET	3
44#define	IPL_SOFTSERIAL	4
45#define	IPL_VM		5
46#define	IPL_SCHED	6
47#define	IPL_HIGH	7
48#define	NIPL		8
49
50extern int idepth;
51extern const uint16_t ipl2psl_table[NIPL];
52
53typedef int ipl_t;
54typedef struct {
55	uint16_t _psl;
56} ipl_cookie_t;
57
58static inline ipl_cookie_t
59makeiplcookie(ipl_t ipl)
60{
61
62	return (ipl_cookie_t){._psl = ipl2psl_table[ipl]};
63}
64
65static inline int
66splraiseipl(ipl_cookie_t icookie)
67{
68
69	return _splraise(icookie._psl);
70}
71
72static __inline void
73splx(int sr)
74{
75
76	__asm volatile("movw %0,%%sr" : : "di" (sr));
77}
78
79/*
80 * news68k can handle software interrupts by its own hardware
81 * so has no need to check for any simulated interrupts, etc.
82 */
83#define	spl0()		_spl0()
84
85#define	splsoftbio()	splraise2()
86#define	splsoftclock()	splraise2()
87#define	splsoftnet()	splraise2()
88#define	splsoftserial()	splraise2()
89#define	splvm()		splraise5()
90#define	splhigh()	spl7()
91#define	splsched()	spl7()
92
93#endif /* _NEWS68K_INTR_H_ */
94