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mcclock_ioasic.c revision 1.12 
      1 /* $NetBSD: mcclock_ioasic.c,v 1.12 2000/01/09 13:24:16 simonb Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
      5  * All rights reserved.
      6  *
      7  * Author: Chris G. Demetriou
      8  *
      9  * Permission to use, copy, modify and distribute this software and
     10  * its documentation is hereby granted, provided that both the copyright
     11  * notice and this permission notice appear in all copies of the
     12  * software, derivative works or modified versions, and any portions
     13  * thereof, and that both notices appear in supporting documentation.
     14  *
     15  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     16  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     17  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     18  *
     19  * Carnegie Mellon requests users of this software to return to
     20  *
     21  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     22  *  School of Computer Science
     23  *  Carnegie Mellon University
     24  *  Pittsburgh PA 15213-3890
     25  *
     26  * any improvements or extensions that they make and grant Carnegie the
     27  * rights to redistribute these changes.
     28  */
     29 
     30 #include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
     31 
     32 __KERNEL_RCSID(0, "$NetBSD: mcclock_ioasic.c,v 1.12 2000/01/09 13:24:16 simonb Exp $");
     33 
     34 #include <sys/param.h>
     35 #include <sys/kernel.h>
     36 #include <sys/systm.h>
     37 #include <sys/device.h>
     38 
     39 #include <dev/dec/clockvar.h>
     40 #include <dev/dec/mcclockvar.h>
     41 #include <dev/dec/mcclock_pad32.h>
     42 #include <dev/ic/mc146818reg.h>
     43 
     44 #include <dev/tc/tcreg.h>
     45 #include <dev/tc/tcvar.h>
     46 #include <dev/tc/ioasicvar.h>
     47 
     48 static int	mcclock_ioasic_match __P((struct device *, struct cfdata *,
     49 		    void *));
     50 static void	mcclock_ioasic_attach __P((struct device *, struct device *,
     51 		    void *));
     52 
     53 struct cfattach mcclock_ioasic_ca = {
     54 	sizeof (struct mcclock_pad32_softc),
     55 	mcclock_ioasic_match, mcclock_ioasic_attach,
     56 };
     57 extern struct cfdriver ioasic_cd;
     58 
     59 
     60 static int
     61 mcclock_ioasic_match(parent, match, aux)
     62 	struct device *parent;
     63 	struct cfdata *match;
     64 	void *aux;
     65 {
     66 	struct ioasicdev_attach_args *d = aux;
     67 
     68 	if (parent->dv_cfdata->cf_driver != &ioasic_cd)
     69 		return 0;
     70 
     71 	if (strcmp("mc146818", d->iada_modname) != 0)
     72 		return (0);
     73 
     74 	if (tc_badaddr(d->iada_addr))
     75 		return (0);
     76 
     77 	return (1);
     78 }
     79 
     80 static void
     81 mcclock_ioasic_attach(parent, self, aux)
     82 	struct device *parent, *self;
     83 	void *aux;
     84 {
     85 	struct ioasicdev_attach_args *ioasicdev = aux;
     86 	struct mcclock_pad32_softc *sc = (struct mcclock_pad32_softc *)self;
     87 
     88 	sc->sc_dp = (struct mcclock_pad32_clockdatum *)ioasicdev->iada_addr;
     89 
     90 	/* Attach MI driver, using busfns with TC-style register padding */
     91 	mcclock_attach(&sc->sc_mcclock, &mcclock_pad32_busfns);
     92 }
     93