/*      $NetBSD: mcclock_ioasic.c,v 1.24 2015/06/09 20:23:53 matt Exp $ */

/*
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
*  Software Distribution Coordinator  or  [email protected]
*  School of Computer Science
*  Carnegie Mellon University
*  Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: mcclock_ioasic.c,v 1.24 2015/06/09 20:23:53 matt Exp $");

#include <sys/param.h>
#include <sys/cpu.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <dev/clock_subr.h>

#include <dev/dec/mcclockvar.h>
#include <dev/dec/mcclock_pad32.h>

#include <dev/tc/tcvar.h>
#include <dev/tc/ioasicvar.h>

static int      mcclock_ioasic_match(device_t, cfdata_t, void *);
static void     mcclock_ioasic_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(mcclock_ioasic, sizeof (struct mcclock_pad32_softc),
   mcclock_ioasic_match, mcclock_ioasic_attach, NULL, NULL);

static int
mcclock_ioasic_match(device_t parent, cfdata_t cf, void *aux)
{
       struct ioasicdev_attach_args *d = aux;

       if (strcmp("mc146818", d->iada_modname) != 0)
               return (0);

       if (tc_badaddr(d->iada_addr))
               return (0);

       return (1);
}

static void
mcclock_ioasic_attach(device_t parent, device_t self, void *aux)
{
       struct ioasicdev_attach_args *ioasicdev = aux;
       struct mcclock_pad32_softc *sc = device_private(self);

       sc->sc_mcclock.sc_dev = self;
       sc->sc_dp = (struct mcclock_pad32_clockdatum *)ioasicdev->iada_addr;

       /* Attach MI driver, using busfns with TC-style register padding */
       mcclock_attach(&sc->sc_mcclock, &mcclock_pad32_busfns);
}