1 /* $NetBSD: mcclock_ioasic.c,v 1.22 2009/03/14 21:04:14 dsl 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@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> 31 __KERNEL_RCSID(0, "$NetBSD: mcclock_ioasic.c,v 1.22 2009/03/14 21:04:14 dsl Exp $"); 32 33 #include <sys/param.h> 34 #include <sys/device.h> 35 #include <sys/systm.h> 36 #include <dev/clock_subr.h> 37 38 #include <dev/dec/mcclockvar.h> 39 #include <dev/dec/mcclock_pad32.h> 40 41 #include <dev/tc/tcvar.h> 42 #include <dev/tc/ioasicvar.h> 43 44 static int mcclock_ioasic_match(struct device *, struct cfdata *, 45 void *); 46 static void mcclock_ioasic_attach(struct device *, struct device *, 47 void *); 48 49 CFATTACH_DECL(mcclock_ioasic, sizeof (struct mcclock_pad32_softc), 50 mcclock_ioasic_match, mcclock_ioasic_attach, NULL, NULL); 51 52 static int 53 mcclock_ioasic_match(struct device *parent, struct cfdata *match, void *aux) 54 { 55 struct ioasicdev_attach_args *d = aux; 56 57 if (strcmp("mc146818", d->iada_modname) != 0) 58 return (0); 59 60 if (tc_badaddr(d->iada_addr)) 61 return (0); 62 63 return (1); 64 } 65 66 static void 67 mcclock_ioasic_attach(struct device *parent, struct device *self, void *aux) 68 { 69 struct ioasicdev_attach_args *ioasicdev = aux; 70 struct mcclock_pad32_softc *sc = (struct mcclock_pad32_softc *)self; 71 72 sc->sc_dp = (struct mcclock_pad32_clockdatum *)ioasicdev->iada_addr; 73 74 /* Attach MI driver, using busfns with TC-style register padding */ 75 mcclock_attach(&sc->sc_mcclock, &mcclock_pad32_busfns); 76 } 77