152 lines
4.9 KiB
C
152 lines
4.9 KiB
C
/* $NetBSD: mcclock_jensenio.c,v 1.9 2008/04/28 20:23:11 martin 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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*
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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 1.9 2008/04/28 20:23:11 martin 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/clock_subr.h>
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#include <dev/ic/mc146818reg.h>
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#include <dev/ic/mc146818var.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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#include <alpha/alpha/mcclockvar.h>
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struct mcclock_jensenio_softc {
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struct mc146818_softc sc_mc146818;
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bus_space_handle_t sc_std_rtc_ioh;
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};
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int mcclock_jensenio_match(device_t, cfdata_t, void *);
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void mcclock_jensenio_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(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 mc146818_softc *, u_int, u_int);
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u_int mcclock_jensenio_read(struct mc146818_softc *, u_int);
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int
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mcclock_jensenio_match(device_t parent, cfdata_t cf, 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, cf->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(device_t parent, device_t self, void *aux)
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{
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struct mcclock_jensenio_softc *jsc = device_private(self);
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struct jensenio_attach_args *ja = aux;
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struct mc146818_softc *sc = &jsc->sc_mc146818;
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sc->sc_dev = self;
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sc->sc_bst = ja->ja_iot;
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if (bus_space_map(sc->sc_bst, ja->ja_ioaddr, 0x02, 0,
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&sc->sc_bsh))
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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_bst, 0x70, 0x02, 0,
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&jsc->sc_std_rtc_ioh);
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sc->sc_mcread = mcclock_jensenio_read;
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sc->sc_mcwrite = mcclock_jensenio_write;
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mcclock_attach(sc);
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}
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void
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mcclock_jensenio_write(struct mc146818_softc *sc, u_int reg, u_int datum)
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{
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bus_space_tag_t iot = sc->sc_bst;
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bus_space_handle_t ioh = sc->sc_bsh;
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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 mc146818_softc *sc, u_int reg)
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{
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bus_space_tag_t iot = sc->sc_bst;
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bus_space_handle_t ioh = sc->sc_bsh;
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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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