1 /* $NetBSD: mcclock_pad32.c,v 1.2 1996/04/17 22:22:58 cgd 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/param.h> 31 #include <sys/kernel.h> 32 #include <sys/systm.h> 33 #include <sys/device.h> 34 35 #include <alpha/alpha/clockvar.h> 36 #include <alpha/alpha/mcclockvar.h> 37 #include <dev/ic/mc146818reg.h> 38 #include <dev/tc/tcreg.h> 39 #include <dev/tc/tcvar.h> 40 #include <dev/tc/ioasicvar.h> /* XXX */ 41 42 struct mcclock_ioasic_clockdatum { 43 u_char datum; 44 char pad[3]; 45 }; 46 47 struct mcclock_ioasic_softc { 48 struct mcclock_softc sc_mcclock; 49 50 struct mcclock_ioasic_clockdatum *sc_dp; 51 }; 52 53 int mcclock_ioasic_match __P((struct device *, void *, void *)); 54 void mcclock_ioasic_attach __P((struct device *, struct device *, void *)); 55 56 struct cfattach mcclock_ioasic_ca = { 57 sizeof (struct mcclock_ioasic_softc), mcclock_ioasic_match, 58 mcclock_ioasic_attach, 59 }; 60 61 void mcclock_ioasic_write __P((struct mcclock_softc *, u_int, u_int)); 62 u_int mcclock_ioasic_read __P((struct mcclock_softc *, u_int)); 63 64 const struct mcclock_busfns mcclock_ioasic_busfns = { 65 mcclock_ioasic_write, mcclock_ioasic_read, 66 }; 67 68 int 69 mcclock_ioasic_match(parent, match, aux) 70 struct device *parent; 71 void *match, *aux; 72 { 73 struct ioasicdev_attach_args *d = aux; 74 75 if (strncmp("TOY_RTC ", d->iada_modname, TC_ROM_LLEN)) 76 return (0); 77 78 return (1); 79 } 80 81 void 82 mcclock_ioasic_attach(parent, self, aux) 83 struct device *parent, *self; 84 void *aux; 85 { 86 struct ioasicdev_attach_args *ioasicdev = aux; 87 struct mcclock_ioasic_softc *sc = (struct mcclock_ioasic_softc *)self; 88 89 sc->sc_dp = (struct mcclock_ioasic_clockdatum *)ioasicdev->iada_addr; 90 91 mcclock_attach(&sc->sc_mcclock, &mcclock_ioasic_busfns); 92 } 93 94 void 95 mcclock_ioasic_write(dev, reg, datum) 96 struct mcclock_softc *dev; 97 u_int reg, datum; 98 { 99 struct mcclock_ioasic_softc *sc = (struct mcclock_ioasic_softc *)dev; 100 101 sc->sc_dp[reg].datum = datum; 102 } 103 104 u_int 105 mcclock_ioasic_read(dev, reg) 106 struct mcclock_softc *dev; 107 u_int reg; 108 { 109 struct mcclock_ioasic_softc *sc = (struct mcclock_ioasic_softc *)dev; 110 111 return (sc->sc_dp[reg].datum); 112 } 113