160 lines
5.5 KiB
C
160 lines
5.5 KiB
C
/* $NetBSD: mcclock_jensenio.c,v 1.4 2002/10/02 04:06:38 thorpej Exp $ */
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/*-
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* Copyright (c) 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1995, 1996 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
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__KERNEL_RCSID(0, "$NetBSD: mcclock_jensenio.c,v 1.4 2002/10/02 04:06:38 thorpej Exp $");
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <machine/bus.h>
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#include <dev/dec/clockvar.h>
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#include <dev/dec/mcclockvar.h>
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#include <dev/ic/mc146818reg.h>
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#include <dev/eisa/eisavar.h>
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#include <dev/isa/isavar.h>
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#include <alpha/jensenio/jenseniovar.h>
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struct mcclock_jensenio_softc {
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struct mcclock_softc sc_mcclock;
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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bus_space_handle_t sc_std_rtc_ioh;
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};
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int mcclock_jensenio_match(struct device *, struct cfdata *, void *);
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void mcclock_jensenio_attach(struct device *, struct device *, void *);
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CFATTACH_DECL(mcclock_jensenio, sizeof (struct mcclock_jensenio_softc),
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mcclock_jensenio_match, mcclock_jensenio_attach, NULL, NULL);
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void mcclock_jensenio_write(struct mcclock_softc *, u_int, u_int);
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u_int mcclock_jensenio_read(struct mcclock_softc *, u_int);
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const struct mcclock_busfns mcclock_jensenio_busfns = {
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mcclock_jensenio_write, mcclock_jensenio_read,
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};
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int
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mcclock_jensenio_match(struct device *parent, struct cfdata *match, void *aux)
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{
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struct jensenio_attach_args *ja = aux;
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/* Always present. */
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if (strcmp(ja->ja_name, match->cf_name) == 0)
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return (1);
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return (0);
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}
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void
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mcclock_jensenio_attach(struct device *parent, struct device *self, void *aux)
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{
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struct jensenio_attach_args *ja = aux;
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struct mcclock_jensenio_softc *sc = (void *) self;
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sc->sc_iot = ja->ja_iot;
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if (bus_space_map(sc->sc_iot, ja->ja_ioaddr, 0x02, 0,
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&sc->sc_ioh))
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panic("mcclock_jensenio_attach: couldn't map clock I/O space");
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/*
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* Map the I/O space normally used by the ISA RTC (port 0x70) so
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* as to avoid a false match at that address, as well.
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*/
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(void) bus_space_map(sc->sc_iot, 0x70, 0x02, 0,
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&sc->sc_std_rtc_ioh);
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mcclock_attach(&sc->sc_mcclock, &mcclock_jensenio_busfns);
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}
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void
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mcclock_jensenio_write(struct mcclock_softc *mcsc, u_int reg, u_int datum)
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{
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struct mcclock_jensenio_softc *sc = (void *) mcsc;
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bus_space_tag_t iot = sc->sc_iot;
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bus_space_handle_t ioh = sc->sc_ioh;
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bus_space_write_1(iot, ioh, 0, reg);
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bus_space_write_1(iot, ioh, 1, datum);
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}
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u_int
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mcclock_jensenio_read(struct mcclock_softc *mcsc, u_int reg)
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{
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struct mcclock_jensenio_softc *sc = (void *) mcsc;
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bus_space_tag_t iot = sc->sc_iot;
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bus_space_handle_t ioh = sc->sc_ioh;
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bus_space_write_1(iot, ioh, 0, reg);
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return bus_space_read_1(iot, ioh, 1);
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}
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