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/*
 * Copyright (C) 2005 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - 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 __ia64_INTERRUPT_H__
#define __ia64_INTERRUPT_H__

#include <typedefs.h>
#include <arch/types.h>
#include <arch/register.h>

/** External Interrupt vectors. */
#define INTERRUPT_TIMER     0
#define INTERRUPT_SPURIOUS  15

/** General Exception codes. */
#define GE_ILLEGALOP        0
#define GE_PRIVOP       1
#define GE_PRIVREG      2
#define GE_RESREGFLD        3
#define GE_DISBLDISTRAN     4
#define GE_ILLEGALDEP       8

#define EOI 0        /**< The actual value doesn't matter. */

struct istate {
    __address ar_bsp;
    __address ar_bspstore;
    __address ar_bspstore_new;
    __u64 ar_rnat;
    __u64 ar_ifs;
    __u64 ar_pfs;
    __u64 ar_rsc;
    __address cr_ifa;
    cr_isr_t cr_isr;
    __address cr_iipa;
    psr_t cr_ipsr;
    __address cr_iip;
    __u64 pr;
    __address sp;
    
    /*
     * The following variables are defined only for break_instruction handler. 
     */
    __u64 in0;
    __u64 in1;
    __u64 in2;
    __u64 in3;
} __attribute__ ((packed));

extern void *ivt;

extern void general_exception(__u64 vector, istate_t *istate);
extern int break_instruction(__u64 vector, istate_t *istate);
extern void universal_handler(__u64 vector, istate_t *istate);
extern void external_interrupt(__u64 vector, istate_t *istate);

#endif