1 /* $NetBSD: mcclock_ibus.c,v 1.18 2011/06/04 01:43:56 tsutsui 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> /* RCS ID & Copyright macro defns */ 31 __KERNEL_RCSID(0, "$NetBSD: mcclock_ibus.c,v 1.18 2011/06/04 01:43:56 tsutsui Exp $"); 32 33 #include <sys/param.h> 34 #include <sys/kernel.h> 35 #include <sys/device.h> 36 #include <sys/systm.h> 37 #include <dev/clock_subr.h> 38 39 #include <dev/dec/mcclockvar.h> 40 #include <dev/dec/mcclock_pad32.h> 41 42 #include <pmax/ibus/ibusvar.h> 43 44 static int mcclock_ibus_match(device_t, cfdata_t, void *); 45 static void mcclock_ibus_attach(device_t, device_t, void *); 46 47 CFATTACH_DECL_NEW(mcclock_ibus, sizeof (struct mcclock_pad32_softc), 48 mcclock_ibus_match, mcclock_ibus_attach, NULL, NULL); 49 50 static int 51 mcclock_ibus_match(device_t parent, cfdata_t cf, void *aux) 52 { 53 struct ibus_attach_args *ia = aux; 54 55 if (strcmp("mc146818", ia->ia_name) != 0) 56 return (0); 57 58 if (badaddr((void *)ia->ia_addr, sizeof(uint32_t))) 59 return (0); 60 61 return (1); 62 } 63 64 static void 65 mcclock_ibus_attach(device_t parent, device_t self, void *aux) 66 { 67 struct ibus_attach_args *ia = aux; 68 struct mcclock_pad32_softc *sc = device_private(self); 69 70 sc->sc_mcclock.sc_dev = self; 71 sc->sc_dp = (struct mcclock_pad32_clockdatum*)ia->ia_addr; 72 73 /* Attach MI driver, using busfns with TC-style register padding */ 74 mcclock_attach(&sc->sc_mcclock, &mcclock_pad32_busfns); 75 } 76