intr.h revision 1.8 
1/*	$NetBSD: intr.h,v 1.8 2007/12/03 15:33:28 ad Exp $	*/
2
3/*-
4 * Copyright (c) 2002 The NetBSD Foundation, Inc.
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 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *        This product includes software developed by the NetBSD
18 *        Foundation, Inc. and its contributors.
19 * 4. Neither the name of The NetBSD Foundation nor the names of its
20 *    contributors may be used to endorse or promote products derived
21 *    from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
26 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGE.
34 */
35
36#ifndef _DREAMCAST_INTR_H_
37#define _DREAMCAST_INTR_H_
38
39#include <sh3/intr.h>
40
41/* Number of interrupt source */
42#define _INTR_N		10	/* TMU0, TMU1, TMU2, SCIF * 4, IRL * 3 */
43
44/* Interrupt priority levels */
45#define	IPL_VM		12
46#define	IPL_SCHED	14
47#define	IPL_HIGH	15
48
49typedef uint8_t ipl_t;
50typedef struct {
51	ipl_t _ipl;
52} ipl_cookie_t;
53
54static inline ipl_cookie_t
55makeiplcookie(ipl_t ipl)
56{
57
58	return (ipl_cookie_t){._ipl = ipl << 4};
59}
60
61static inline int
62splraiseipl(ipl_cookie_t icookie)
63{
64
65	return _cpu_intr_raise(icookie._ipl);
66}
67
68#include <sys/spl.h>
69
70#define	spl0()			_cpu_intr_resume(0)
71#define	splx(x)			_cpu_intr_resume(x)
72
73#endif /* !_DREAMCAST_INTR_H_ */
74