/*      $OpenBSD: intr.h,v 1.14 2018/08/20 15:02:07 visa Exp $  */
/*      $NetBSD: intr.h,v 1.1 2006/09/01 21:26:18 uwe Exp $     */

/*-
 * Copyright (c) 2002 The NetBSD Foundation, Inc.
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``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 FOUNDATION 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.
 */

#ifndef _MACHINE_INTR_H_
#define _MACHINE_INTR_H_

#include <sh/intr.h>

/* Number of interrupt source */
#define _INTR_N         16

/* Interrupt priority levels */
#define IPL_BIO         10      /* block I/O */
#define IPL_AUDIO       IPL_BIO
#define IPL_NET         11      /* network */
#define IPL_TTY         12      /* terminal */
#define IPL_VM          12
#define IPL_CLOCK       14      /* clock */
#define IPL_SCHED       14      /* scheduling */
#define IPL_HIGH        15      /* everything */

#define IPL_MPSAFE      0       /* no "mpsafe" interrupts */
#define IPL_MPFLOOR     IPL_NONE        /* no MP on landisk */

#define splraise(_ipl)          _cpu_intr_raise((_ipl) << 4)
#define splsoftclock()          splraise(IPL_SOFTCLOCK)
#define splsoftnet()            splraise(IPL_SOFTNET)
#define splsoftserial()         splraise(IPL_SOFTSERIAL)
#define splbio()                splraise(IPL_BIO)
#define splnet()                splraise(IPL_NET)
#define spltty()                splraise(IPL_TTY)
#define splvm()                 splraise(IPL_VM)
#define splaudio()              splraise(IPL_AUDIO)
#define splclock()              splraise(IPL_CLOCK)
#define splstatclock()          splclock()
#define splsched()              splraise(IPL_SCHED)
#define splhigh()               _cpu_intr_suspend()

#define spl0()                  _cpu_intr_resume(IPL_NONE << 4)
#define splx(x)                 _cpu_intr_resume(x)

#ifdef DIAGNOSTIC
/*
 * Although this function is implemented in MI code, it must be in this MD
 * header because we don't want this header to include MI includes.
 */
void splassert_fail(int, int, const char *);
extern int splassert_ctl;
void splassert_check(int, const char *);
#define splassert(__wantipl) \
do {                                                                    \
        if (splassert_ctl > 0) {                                        \
                splassert_check(__wantipl, __func__);                   \
        }                                                               \
} while (0)
#define splsoftassert(__wantipl) splassert(__wantipl)
#else
#define splassert(wantipl)      do { /* nothing yet */ } while (0)
#define splsoftassert(wantipl)  do { /* nothing yet */ } while (0)
#endif

void intr_init(void);
void *extintr_establish(int, int, int (*)(void *), void *, const char *);
void extintr_disestablish(void *ih);
void extintr_enable(void *ih);
void extintr_disable(void *ih);
void extintr_disable_by_num(int irq);

#endif /* !_MACHINE_INTR_H_ */