/*      $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 */