/*      $NetBSD: intr.h,v 1.21 2020/05/17 14:11:30 ad Exp $     */

/*-
 * Copyright (c) 2007, 2020 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Andrew Doran.
 *
 * 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 _SYS_INTR_H_
#define _SYS_INTR_H_

#define INTRIDBUF 64
#define INTRDEVNAMEBUF 256

#ifdef _KERNEL

#include <sys/types.h>

struct cpu_info;

/* Public interface. */
void    *softint_establish(u_int, void (*)(void *), void *);
void    softint_disestablish(void *);
void    softint_schedule(void *);
void    softint_schedule_cpu(void *, struct cpu_info *);

/* MI hooks. */
void    softint_init(struct cpu_info *);
lwp_t   *softint_picklwp(void);
void    softint_block(lwp_t *);

/* MD-MI interface. */
void    softint_init_md(lwp_t *, u_int, uintptr_t *);
#ifndef __HAVE_MD_SOFTINT_TRIGGER
void    softint_trigger(uintptr_t);
#endif
void    softint_dispatch(lwp_t *, int);

/* Flags for softint_establish(). */
#define SOFTINT_BIO     0x0000
#define SOFTINT_CLOCK   0x0001
#define SOFTINT_SERIAL  0x0002
#define SOFTINT_NET     0x0003
#define SOFTINT_MPSAFE  0x0100
#define SOFTINT_RCPU    0x0200

/* Implementation private flags. */
#define SOFTINT_PENDING 0x1000

#define SOFTINT_COUNT   0x0004
#define SOFTINT_LVLMASK 0x00ff
#define SOFTINT_IMPMASK 0xf000

extern u_int    softint_timing;

/*
 * Historical aliases.
 */
#define IPL_BIO         IPL_VM
#define IPL_NET         IPL_VM
#define IPL_TTY         IPL_VM
#define IPL_AUDIO       IPL_SCHED
#define IPL_CLOCK       IPL_SCHED
#define IPL_SERIAL      IPL_HIGH

#define splbio()        splvm()
#define splnet()        splvm()
#define spltty()        splvm()
#define splaudio()      splsched()
#define splclock()      splsched()
#define splserial()     splhigh()

#include <machine/intr.h>

#elif defined(_KMEMUSER)
#define SOFTINT_COUNT   0x0004
#endif  /* _KERNEL */

#endif  /* _SYS_INTR_H_ */