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mkclock_ap.c revision 1.2 
      1 /*	$NetBSD: mkclock_ap.c,v 1.2 2003/11/01 22:50:45 tsutsui Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1996 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/cdefs.h>
     40 __KERNEL_RCSID(0, "$NetBSD: mkclock_ap.c,v 1.2 2003/11/01 22:50:45 tsutsui Exp $");
     41 
     42 #include <sys/param.h>
     43 #include <sys/kernel.h>
     44 #include <sys/systm.h>
     45 #include <sys/device.h>
     46 
     47 #include <machine/cpu.h>
     48 #include <machine/bus.h>
     49 
     50 #include <dev/clock_subr.h>
     51 #include <dev/ic/mk48txxreg.h>
     52 #include <dev/ic/mk48txxvar.h>
     53 
     54 #include <newsmips/apbus/apbusvar.h>
     55 
     56 #define MKCLOCK_AP_STRIDE	2
     57 #define MKCLOCK_AP_OFFSET	\
     58     ((MK48T02_CLKOFF + MK48TXX_ICSR) << MKCLOCK_AP_STRIDE)
     59 
     60 int  mkclock_ap_match(struct device *, struct cfdata  *, void *);
     61 void mkclock_ap_attach(struct device *, struct device *, void *);
     62 static u_int8_t mkclock_ap_nvrd(struct mk48txx_softc *, int);
     63 static void mkclock_ap_nvwr(struct mk48txx_softc *, int, u_int8_t);
     64 
     65 CFATTACH_DECL(mkclock_ap, sizeof(struct mk48txx_softc),
     66     mkclock_ap_match, mkclock_ap_attach, NULL, NULL);
     67 
     68 extern struct cfdriver mkclock_cd;
     69 
     70 int
     71 mkclock_ap_match(parent, cf, aux)
     72 	struct device *parent;
     73 	struct cfdata *cf;
     74 	void *aux;
     75 {
     76 	struct apbus_attach_args *apa = aux;
     77 
     78 	if (strcmp("clock", apa->apa_name) != 0)
     79 		return 0;
     80 
     81 	return 1;
     82 }
     83 
     84 void
     85 mkclock_ap_attach(parent, self, aux)
     86 	struct device *parent, *self;
     87 	void *aux;
     88 {
     89 	struct mk48txx_softc *sc = (void *)self;
     90 	struct apbus_attach_args *apa = aux;
     91 
     92 	printf(" slot%d addr 0x%lx", apa->apa_slotno, apa->apa_hwbase);
     93 	if (bus_space_map(sc->sc_bst, apa->apa_hwbase - MKCLOCK_AP_OFFSET,
     94 	    MK48T02_CLKSZ, 0, &sc->sc_bsh) != 0)
     95 		printf("can't map device space\n");
     96 
     97 	sc->sc_model = "mk48t02";
     98 	sc->sc_year0 = 1900;
     99 	sc->sc_nvrd = mkclock_ap_nvrd;
    100 	sc->sc_nvwr = mkclock_ap_nvwr;
    101 
    102 	mk48txx_attach(sc);
    103 
    104 	printf("\n");
    105 
    106 	todr_attach(&sc->sc_handle);
    107 }
    108 
    109 static u_int8_t
    110 mkclock_ap_nvrd(sc, off)
    111 	struct mk48txx_softc *sc;
    112 	int off;
    113 {
    114 	u_int8_t rv;
    115 
    116 	rv = bus_space_read_4(sc->sc_bst, sc->sc_bsh, off << MKCLOCK_AP_STRIDE);
    117 	return rv;
    118 }
    119 
    120 static void
    121 mkclock_ap_nvwr(sc, off, v)
    122 	struct mk48txx_softc *sc;
    123 	int off;
    124 	u_int8_t v;
    125 {
    126 
    127 	bus_space_write_4(sc->sc_bst, sc->sc_bsh, off << MKCLOCK_AP_STRIDE, v);
    128 }
    129