xref: /src/sys/arch/amiga/clockport/clockport_common.c

/*      $NetBSD: clockport_common.c,v 1.1 2012/04/17 09:59:03 rkujawa Exp $ */

/*-
 * Copyright (c) 2012 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Radoslaw Kujawa.
 *
 * 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.
 */

/*
 * Routines for generic clockports, shared among all backend drivers.
 * TODO: implement clockport_intr_disestablish.
 */

#include <sys/cdefs.h>

#include <sys/systm.h>
#include <sys/types.h>
#include <sys/bus.h>
#include <sys/kmem.h>

#include <machine/cpu.h>

#include <amiga/clockport/clockportvar.h>

#define CLOCKPORT_GENERIC_IPL		6

void *
clockport_generic_intr_establish(int (*isr)(void *), void *arg)
{
	struct isr *sc_isr;

	sc_isr = kmem_alloc(sizeof(struct isr), KM_SLEEP);

	sc_isr->isr_intr = isr;
	sc_isr->isr_arg = arg;
	sc_isr->isr_ipl = CLOCKPORT_GENERIC_IPL;

	add_isr(sc_isr);

	return sc_isr;
}