/*      $NetBSD: irqhandler.h,v 1.9 2008/06/13 13:24:10 rafal Exp $     */

/*
* Copyright (c) 1994-1996 Mark Brinicombe.
* Copyright (c) 1994 Brini.
* All rights reserved.
*
* This code is derived from software written for Brini by Mark Brinicombe
*
* 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 Mark Brinicombe
*      for the NetBSD Project.
* 4. The name of the company nor the name of the author may 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 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.
*
* IRQ related stuff (defines + structures)
*
* Created      : 30/09/94
*/

#ifndef _HPCARM_IRQHANDLER_H_
#define _HPCARM_IRQHANDLER_H_

#ifndef _LOCORE
#include <sys/types.h>
#endif /* _LOCORE */

/* Define the IRQ bits */

#define IRQ_VSYNC       IRQ_FLYBACK     /* Aliased */
#define IRQ_NETSLOT     IRQ_EXTENDED

#define IRQ_INSTRUCT    -1
/* XXX ICU_LEN is used for the same purpose. Either one should be nuked */
#define NIRQS           0x20

#include <machine/intr.h>

#ifndef _LOCORE
typedef struct irqhandler {
       int (*ih_func)(void *);         /* handler function */
       void *ih_arg;                   /* Argument to handler */
       int ih_level;                   /* Interrupt level */
       int ih_count;                   /* Interrupt number (for accounting) */
       int ih_irq;                     /* Interrupt register pin */
       const char *ih_name;            /* Name of interrupt (for vmstat -i) */
       u_int ih_flags;                 /* Interrupt flags */
       u_int ih_maskaddr;              /* mask address for expansion cards */
       u_int ih_maskbits;              /* interrupt bit for expansion cards */
       struct irqhandler *ih_next;     /* next handler */
} irqhandler_t;

#ifdef _KERNEL
extern u_int irqmasks[NIPL];
extern irqhandler_t *irqhandlers[NIRQS];

void irq_init(void);
void irq_setmasks(void);
void disable_irq(int);
void enable_irq(int);
#endif  /* _KERNEL */
#endif  /* _LOCORE */

#define IRQ_FLAG_ACTIVE 0x00000001      /* This is the active handler in list */

#endif  /* _HPCARM_IRQHANDLER_H_ */

/* End of irqhandler.h */