/*      $NetBSD: intr.h,v 1.34 2026/03/18 04:08:38 thorpej Exp $        */

/*
 * Copyright (C) 1997 Scott Reynolds
 * 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 _MAC68K_INTR_H_
#define _MAC68K_INTR_H_

#include <machine/psl.h>

#if defined(_KERNEL) || defined(_KMEMUSER)
typedef struct {
        uint16_t _ipl;
} ipl_cookie_t;
#endif

#ifdef _KERNEL

#define IPL_NONE        0
#define IPL_SOFTCLOCK   1
#define IPL_SOFTBIO     2
#define IPL_SOFTNET     3
#define IPL_SOFTSERIAL  4
#define IPL_VM          5
#define IPL_SCHED       6
#define IPL_HIGH        7
#define NIPL            8

/*
 * This array contains the appropriate PSL_S|PSL_IPL? values
 * to raise interrupt priority to the requested level.
 */
extern uint16_t ipl2psl_table[NIPL];

/* These spl calls are _not_ to be used by machine-independent code. */
#define splzs()         splserial()

/*
 * These should be used for:
 * 1) ensuring mutual exclusion (why use processor level?)
 * 2) allowing faster devices to take priority
 */

/* watch out for side effects */
#define spl0()          _spl0()
#define splx(s)         _splx(s)

typedef int ipl_t;

static inline ipl_cookie_t
makeiplcookie(ipl_t ipl)
{

        return (ipl_cookie_t){._ipl = ipl};
}

static inline int
splraiseipl(ipl_cookie_t icookie)
{

        return _splraise(ipl2psl_table[icookie._ipl]);
}

#include <sys/spl.h>

/* intr.c */
struct clockframe;
void    intr_init(void);
void    intr_establish(int (*)(void *), void *, int);
void    intr_disestablish(int);
void    intr_dispatch(struct clockframe);
#endif /* _KERNEL */

#endif /* _MAC68K_INTR_H_ */