xref: /src/sys/arch/dreamcast/include/intr.h

/*	$NetBSD: intr.h,v 1.6 2007/02/09 21:55:02 ad Exp $	*/

/*-
 * Copyright (c) 2002 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *        This product includes software developed by the NetBSD
 *        Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * 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 _DREAMCAST_INTR_H_
#define _DREAMCAST_INTR_H_

#include <sh3/intr.h>

/* Number of interrupt source */
#define _INTR_N		10	/* TMU0, TMU1, TMU2, SCIF * 4, IRL * 3 */

/* Interrupt priority levels */
#define	IPL_BIO		9	/* block I/O	(IRL9) */
#define	IPL_NET		11	/* network	(IRL11) */
#define	IPL_TTY		12	/* terminal	(IRL13) */
#define	IPL_VM		IPL_TTY
#define	IPL_SERIAL	12	/* serial */
#define	IPL_CLOCK	14	/* clock */
#define	IPL_STATCLOCK	IPL_CLOCK
#define	IPL_SCHED	IPL_CLOCK
#define	IPL_HIGH	15	/* everything */
#define	IPL_LOCK	IPL_HIGH

typedef uint8_t ipl_t;
typedef struct {
	ipl_t _ipl;
} ipl_cookie_t;

static inline ipl_cookie_t
makeiplcookie(ipl_t ipl)
{

	return (ipl_cookie_t){._ipl = ipl << 4};
}

static inline int
splraiseipl(ipl_cookie_t icookie)
{

	return _cpu_intr_raise(icookie._ipl);
}

#include <sys/spl.h>

#define	spl0()			_cpu_intr_resume(0)
#define	splx(x)			_cpu_intr_resume(x)

#define	spllowersoftclock()	_cpu_intr_resume(IPL_SOFTCLOCK << 4)

#endif /* !_DREAMCAST_INTR_H_ */