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/* $OpenBSD: intr.h,v 1.3 2011/03/23 16:54:37 pirofti Exp $ */
/* $NetBSD: cpu.h,v 1.24 1997/03/15 22:25:15 pk Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* 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. Neither the name of the University 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 REGENTS 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 REGENTS 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.
*
* @(#)cpu.h 8.4 (Berkeley) 1/5/94
*/
#ifndef _MACHINE_INTR_H_
#define _MACHINE_INTR_H_
#ifdef _KERNEL
#include <sys/evcount.h>
/*
* Interrupt handler chains. Interrupt handlers should return 0 for
* ``not me'' or 1 (``I took care of it''). intr_establish() inserts a
* handler into the list. The handler is called with its (single)
* argument, or with a pointer to a clockframe if ih_arg is NULL.
* ih_ipl specifies the interrupt level that should be blocked when
* executing this handler.
*/
struct intrhand {
int (*ih_fun)(void *);
void *ih_arg;
int ih_ipl;
int ih_vec; /* ipl for vmstat */
struct evcount ih_count;
struct intrhand *ih_next; /* global list */
};
extern struct intrhand *intrhand[15]; /* XXX obio.c */
void intr_establish(int, struct intrhand *, int, const char *);
void vmeintr_establish(int, int, struct intrhand *, int, const char *);
/*
* intr_fasttrap() is a lot like intr_establish, but is used for ``fast''
* interrupt vectors (vectors that are not shared and are handled in the
* trap window). Such functions must be written in assembly.
*/
int intr_fasttrap(int, void (*)(void), int (*)(void *), void *);
void intr_fastuntrap(int);
void intr_init(void);
/*
* Soft interrupt handler chains. In addition to a struct intrhand for
* proper dispatching, we also remember a pending state as well as the
* bits to frob in the software interrupt register.
*/
struct sintrhand {
struct intrhand sih_ih;
int sih_pending; /* nonzero if triggered */
int sih_hw; /* hw dependent */
int sih_ipl; /* ipl it's registered at */
};
void softintr_disestablish(void *);
void *softintr_establish(int, void (*)(void *), void *);
void softintr_schedule(void *);
#endif /* _KERNEL */
#endif /* _MACHINE_INTR_H_ */
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