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/* $OpenBSD: intr.h,v 1.25 2009/03/15 20:40:25 miod Exp $ */
/* $NetBSD: intr.h,v 1.2 1997/07/24 05:43:08 scottr Exp $ */
/*-
* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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.
*
* 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 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.
*/
#ifndef _HP300_INTR_H_
#define _HP300_INTR_H_
#include <machine/psl.h>
#include <sys/evcount.h>
#include <sys/queue.h>
#ifdef _KERNEL
struct isr {
LIST_ENTRY(isr) isr_link;
int (*isr_func)(void *);
void *isr_arg;
int isr_ipl;
int isr_priority;
struct evcount isr_count;
};
#define NISR 8
/*
* Interrupt "levels". These are a more abstract representation
* of interrupt levels, and do not have the same meaning as m68k
* CPU interrupt levels. They serve two purposes:
*
* - properly order ISRs in the list for that CPU ipl
* - compute CPU PSL values for the spl*() calls.
*/
#define IPL_NONE 0
#define IPL_SOFTINT 1
#define IPL_BIO 2
#define IPL_NET 3
#define IPL_TTY 4
#define IPL_VM 5
#define IPL_CLOCK 6
#define IPL_STATCLOCK 6
#define IPL_HIGH 7
/*
* This array contains the appropriate PSL_S|PSL_IPL? values
* to raise interrupt priority to the requested level.
*/
extern unsigned short hp300_varpsl[NISR];
/* These spl calls are used by machine-independent code. */
#define splsoft() _splraise(PSL_S | PSL_IPL1)
#define splsoftclock() splsoft()
#define splsoftnet() splsoft()
#define splbio() _splraise(hp300_varpsl[IPL_BIO])
#define splnet() _splraise(hp300_varpsl[IPL_NET])
#define spltty() _splraise(hp300_varpsl[IPL_TTY])
#define splclock() _splraise(PSL_S | PSL_IPL6)
#define splstatclock() _splraise(PSL_S | PSL_IPL6)
#define splvm() _splraise(PSL_S | PSL_IPL5)
#define splhigh() _spl(PSL_S | PSL_IPL7)
#define splsched() splhigh()
/* watch out for side effects */
#define splx(s) ((s) & PSL_IPL ? _spl((s)) : spl0())
#include <m68k/intr.h> /* soft interrupt support */
/* locore.s */
int spl0(void);
/* intr.c */
void intr_init(void);
void intr_establish(struct isr *, const char *);
void intr_disestablish(struct isr *);
void intr_dispatch(int);
void intr_printlevels(void);
#endif /* _KERNEL */
#endif /* _HP300_INTR_H_ */
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