NetBSD-5.0.2/sys/arch/arc/jazz/timer_jazzio.c

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/*	$NetBSD: timer_jazzio.c,v 1.10 2008/07/05 08:46:25 tsutsui Exp $	*/
/*	$OpenBSD: clock.c,v 1.6 1998/10/15 21:30:15 imp Exp $	*/

/*
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * the Systems Programming Group of the University of Utah Computer
 * Science Department and Ralph Campbell.
 *
 * 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. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 *
 * from: Utah Hdr: clock.c 1.18 91/01/21
 *
 *	from: @(#)clock.c	8.1 (Berkeley) 6/10/93
 */

/*
 * Copyright (c) 1997 Per Fogelstrom.
 * Copyright (c) 1988 University of Utah.
 *
 * This code is derived from software contributed to Berkeley by
 * the Systems Programming Group of the University of Utah Computer
 * Science Department and Ralph Campbell.
 *
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 *
 * from: Utah Hdr: clock.c 1.18 91/01/21
 *
 *	from: @(#)clock.c	8.1 (Berkeley) 6/10/93
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: timer_jazzio.c,v 1.10 2008/07/05 08:46:25 tsutsui Exp $");

#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/device.h>

#include <machine/autoconf.h>
#include <machine/platform.h>

#include <dev/isa/isavar.h>

#include <arc/arc/timervar.h>
#include <arc/jazz/jazziovar.h>
#include <arc/jazz/timer_jazziovar.h>

/* Definition of the driver for autoconfig. */
static int timer_jazzio_match(device_t , cfdata_t, void *);
static void timer_jazzio_attach(device_t , device_t , void *);

CFATTACH_DECL_NEW(timer_jazzio, 0,
    timer_jazzio_match, timer_jazzio_attach, NULL, NULL);

/* Jazz timer access code */
static void timer_jazzio_init(device_t);

struct timerfns timerfns_jazzio = {
	timer_jazzio_init,
};

struct timer_jazzio_config *timer_jazzio_conf = NULL;
struct evcnt timer_jazzio_ev =
    EVCNT_INITIALIZER(EVCNT_TYPE_INTR, NULL, "jazzio", "timer");

static int timer_jazzio_found = 0;

static int
timer_jazzio_match(device_t parent, cfdata_t cf, void *aux)
{
	struct jazzio_attach_args *ja = aux;

	/* make sure that we're looking for this type of device. */
	if (strcmp(ja->ja_name, "timer") != 0)
		return 0;

	if (timer_jazzio_found)
		return 0;

	return 1;
}

static void
timer_jazzio_attach(device_t parent, device_t self, void *aux)
{

	if (timer_jazzio_conf == NULL)
		panic("timer_jazzio_conf isn't initialized");

	aprint_normal("\n");

	evcnt_attach_static(&timer_jazzio_ev);
	(*platform->set_intr)(timer_jazzio_conf->tjc_intr_mask,
	    timer_jazzio_conf->tjc_intr, ARC_INTPRI_TIMER_INT);

	timerattach(self, &timerfns_jazzio);

	timer_jazzio_found = 1;
}

void
timer_jazzio_init(struct device *sc)
{

	(*timer_jazzio_conf->tjc_init)(1000 / hz);
}