NetBSD/sys/arch/acorn26/include/irq.h

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/* $NetBSD: irq.h,v 1.2 2002/03/24 23:37:43 bjh21 Exp $ */
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/*-
* Copyright (c) 2000 Ben Harris
* 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. 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 _ARM26_IRQ_H
#define _ARM26_IRQ_H
#include <arch/acorn26/iobus/iocreg.h>
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/* return values from interrupt handlers */
/* These are the same as arm32 uses */
#define IRQ_HANDLED 1
#define IRQ_NOT_HANDLED 0
#define IRQ_MAYBE_HANDLED -1
/*
* These definitions specify how the devices are wired to the IOC
* interrupt lines.
*/
/* All systems */
#define IRQ_PFIQ IOC_IRQ_IL0 /* Podule FIQ request */
#define IRQ_SIRQ IOC_IRQ_IL1 /* Sound buffer pointer used */
#define IRQ_PIRQ IOC_IRQ_IL5 /* Podule IRQ request */
#define IRQ_VFLYBK IOC_IRQ_IR /* Start of display vertical flyback */
/* Archimedes systems */
#define IRQ_SLCI IOC_IRQ_IL2 /* Serial line controller interrupt */
#define IRQ_WIRQ IOC_IRQ_IL3 /* Winchester interrupt request */
#define IRQ_DCIRQ IOC_IRQ_IL4 /* Disc change interrupt request */
#define IRQ_PBSY IOC_IRQ_IL6 /* Printer Busy Input */
#define IRQ_RII IOC_IRQ_IL7 /* Serial line ring indicator input */
#define IRQ_PACK IOC_IRQ_IF /* Printer acknowledge input */
/* IOEB systems */
#define IRQ_SINTR IOC_IRQ_IL2 /* Serial line interrupt */
#define IRQ_IDEINTR IOC_IRQ_IL3 /* IDE interrupt */
#define IRQ_FINTR IOC_IRQ_IL4 /* Floppy disc interrupt */
#define IRQ_LPINTR IOC_IRQ_IL6 /* Parallel port latched interrupt */
#define IRQ_INDEX IOC_IRQ_IF /* Start of floppy disc index pulse */
/* IRQ numbers above 15 are non-IOC IRQs */
#define IRQ_UNIXBP_BASE 16
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struct irq_handler;
struct evcnt;
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extern void irq_init(void);
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/* irq_handler is declared in machdep.h */
/* splx, raisespl and lowerspl are declared in intr.h */
extern struct irq_handler *irq_establish(int, int, int(*)(void *), void *,
struct evcnt *);
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extern char const *irq_string(struct irq_handler *);
extern void irq_enable(struct irq_handler *);
extern void irq_disable(struct irq_handler *);
extern void irq_genmasks(void);
extern void irq_stat(void (*)(const char *, ...));
#endif