Return to mcclock_ioasic.c CVS log

Up to [local] / sys / arch / alpha / tc

Annotation of sys/arch/alpha/tc/mcclock_ioasic.c, Revision 1.1

1.1     ! nbrk        1: /* $OpenBSD: mcclock_ioasic.c,v 1.6 2002/05/02 22:56:06 miod Exp $ */
        !             2: /* $NetBSD: mcclock_ioasic.c,v 1.9 2000/07/04 02:37:51 nisimura Exp $ */
        !             3:
        !             4: /*
        !             5:  * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
        !             6:  * All rights reserved.
        !             7:  *
        !             8:  * Author: Chris G. Demetriou
        !             9:  *
        !            10:  * Permission to use, copy, modify and distribute this software and
        !            11:  * its documentation is hereby granted, provided that both the copyright
        !            12:  * notice and this permission notice appear in all copies of the
        !            13:  * software, derivative works or modified versions, and any portions
        !            14:  * thereof, and that both notices appear in supporting documentation.
        !            15:  *
        !            16:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            17:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
        !            18:  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            19:  *
        !            20:  * Carnegie Mellon requests users of this software to return to
        !            21:  *
        !            22:  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
        !            23:  *  School of Computer Science
        !            24:  *  Carnegie Mellon University
        !            25:  *  Pittsburgh PA 15213-3890
        !            26:  *
        !            27:  * any improvements or extensions that they make and grant Carnegie the
        !            28:  * rights to redistribute these changes.
        !            29:  */
        !            30:
        !            31: #include <sys/param.h>
        !            32: #include <sys/kernel.h>
        !            33: #include <sys/systm.h>
        !            34: #include <sys/device.h>
        !            35:
        !            36: #include <dev/dec/clockvar.h>
        !            37: #include <dev/dec/mcclockvar.h>
        !            38: #include <dev/ic/mc146818reg.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(struct device *, void *, void *);
        !            54: void   mcclock_ioasic_attach(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(struct mcclock_softc *, u_int, u_int);
        !            62: u_int  mcclock_ioasic_read(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: }