/*	$NetBSD: intr.h,v 1.5 1996/05/13 06:11:28 mycroft Exp $	*/

/*
 * Copyright (c) 1996 Charles M. Hannum.  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 Charles M. Hannum.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 _ARC_INTR_H_
#define _ARC_INTR_H_

/* Interrupt priority `levels'; not mutually exclusive. */
#define	IPL_BIO		0	/* block I/O */
#define	IPL_NET		1	/* network */
#define	IPL_TTY		2	/* terminal */
#define	IPL_CLOCK	3	/* clock */
#define	IPL_IMP		4	/* memory allocation */
#define	IPL_NONE	5	/* nothing */
#define	IPL_HIGH	6	/* everything */

/* Interrupt sharing types. */
#define	IST_NONE	0	/* none */
#define	IST_PULSE	1	/* pulsed */
#define	IST_EDGE	2	/* edge-triggered */
#define	IST_LEVEL	3	/* level-triggered */

/* Soft interrupt masks. */
#define	SIR_CLOCK	31
#define	SIR_CLOCKMASK	((1 << SIR_CLOCK))
#define	SIR_NET		30
#define	SIR_NETMASK	((1 << SIR_NET) | SIR_CLOCKMASK)
#define	SIR_TTY		29
#define	SIR_TTYMASK	((1 << SIR_TTY) | SIR_CLOCKMASK)
#define	SIR_ALLMASK	(SIR_CLOCKMASK | SIR_NETMASK | SIR_TTYMASK)

#ifndef _LOCORE

void setsoftclock __P((void));
void clearsoftclock __P((void));
int  splsoftclock __P((void));
void setsoftnet   __P((void));
void clearsoftnet __P((void));
int  splsoftnet   __P((void));

#define spllowersoftclock() splsoftclock()

struct clockframe;
void set_intr __P((int, int(*)(u_int, struct clockframe *), int));

volatile int cpl, ipending, astpending;
int imask[7];

#endif /* _LOCORE */

#endif /* _ARC_INTR_H_ */