130 lines
3.6 KiB
C
130 lines
3.6 KiB
C
/* $NetBSD: mkclock_sbdio.c,v 1.7 2008/04/28 20:23:18 martin Exp $ */
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/*-
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* Copyright (c) 1996 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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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: mkclock_sbdio.c,v 1.7 2008/04/28 20:23:18 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/cpu.h>
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#include <machine/bus.h>
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#include <machine/sbdiovar.h>
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#include <dev/clock_subr.h>
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#include <dev/ic/mk48txxreg.h>
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#include <dev/ic/mk48txxvar.h>
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#include "ioconf.h"
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#define MKCLOCK_SBD_STRIDE 2
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int mkclock_sbdio_match(device_t, cfdata_t, void *);
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void mkclock_sbdio_attach(device_t, device_t, void *);
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static uint8_t mkclock_sbdio_nvrd(struct mk48txx_softc *, int);
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static void mkclock_sbdio_nvwr(struct mk48txx_softc *, int, uint8_t);
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CFATTACH_DECL_NEW(mkclock_sbdio, sizeof(struct mk48txx_softc),
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mkclock_sbdio_match, mkclock_sbdio_attach, NULL, NULL);
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int
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mkclock_sbdio_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct sbdio_attach_args *sa = aux;
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if (strcmp("mkclock", sa->sa_name) != 0)
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return 0;
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return 1;
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}
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void
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mkclock_sbdio_attach(device_t parent, device_t self, void *aux)
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{
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struct mk48txx_softc *sc = device_private(self);
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struct sbdio_attach_args *sa = aux;
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bus_size_t size;
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sc->sc_dev = self;
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switch (sa->sa_flags) {
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case 0x0000:
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sc->sc_model = "mk48t08";
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size = MK48T08_CLKSZ;
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break;
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case 0x0001:
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sc->sc_model = "mk48t18";
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size = MK48T18_CLKSZ;
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break;
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default:
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/* assume MK48T18 */
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sc->sc_model = "mk48t18";
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size = MK48T18_CLKSZ;
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break;
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}
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sc->sc_bst = sa->sa_bust;
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if (bus_space_map(sc->sc_bst, sa->sa_addr1, size, 0,
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&sc->sc_bsh) != 0) {
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aprint_error(": can't map device space\n");
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return;
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}
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sc->sc_year0 = 2000; /* XXX Is this OK? */
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sc->sc_nvrd = mkclock_sbdio_nvrd;
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sc->sc_nvwr = mkclock_sbdio_nvwr;
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mk48txx_attach(sc);
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aprint_normal("\n");
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}
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static uint8_t
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mkclock_sbdio_nvrd(struct mk48txx_softc *sc, int off)
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{
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uint8_t rv;
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rv = bus_space_read_1(sc->sc_bst, sc->sc_bsh,
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off << MKCLOCK_SBD_STRIDE);
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return rv;
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}
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static void
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mkclock_sbdio_nvwr(struct mk48txx_softc *sc, int off, uint8_t v)
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{
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bus_space_write_1(sc->sc_bst, sc->sc_bsh, off << MKCLOCK_SBD_STRIDE, v);
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}
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