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timekeeper.c revision 1.12 
      1 /*	$NetBSD: timekeeper.c,v 1.12 2008/03/29 05:47:53 tsutsui Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Steve C. Woodford.
      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 /*
     40  * Attachment interface for the Time-Keeper RAMs on mvme boards.
     41  *
     42  * XXXSCW: Needs to be extended to allow read/write to NVRAM by
     43  * userland application.
     44  */
     45 
     46 #include <sys/cdefs.h>
     47 __KERNEL_RCSID(0, "$NetBSD: timekeeper.c,v 1.12 2008/03/29 05:47:53 tsutsui Exp $");
     48 
     49 #include <sys/param.h>
     50 #include <sys/systm.h>
     51 #include <sys/device.h>
     52 #include <sys/conf.h>
     53 
     54 #include <machine/cpu.h>
     55 #include <machine/bus.h>
     56 
     57 #include <dev/mvme/clockvar.h>
     58 
     59 #include <dev/ic/mk48txxreg.h>
     60 #include <dev/ic/mk48txxvar.h>
     61 
     62 #include <mvme68k/dev/mainbus.h>
     63 
     64 #include "ioconf.h"
     65 
     66 int timekeeper_match(device_t, cfdata_t, void *);
     67 void timekeeper_attach(device_t, device_t, void *);
     68 
     69 CFATTACH_DECL_NEW(timekeeper, sizeof(struct mk48txx_softc),
     70     timekeeper_match, timekeeper_attach, NULL, NULL);
     71 
     72 int
     73 timekeeper_match(device_t parent, cfdata_t cf, void *aux)
     74 {
     75 	struct mainbus_attach_args *ma = aux;
     76 
     77 	if (strcmp(ma->ma_name, timekeeper_cd.cd_name))
     78 		return (0);
     79 
     80 	return (1);
     81 }
     82 
     83 void
     84 timekeeper_attach(device_t parent, device_t self, void *aux)
     85 {
     86 	struct mk48txx_softc *sc = device_private(self);
     87 	struct mainbus_attach_args *ma = aux;
     88 	bus_size_t size;
     89 
     90 	sc->sc_dev = self;
     91 	sc->sc_bst = ma->ma_bust;
     92 
     93 	if (machineid == MVME_147) {
     94 		size = MK48T02_CLKSZ;
     95 		sc->sc_model = "mk48t02";
     96 	} else {
     97 		size = MK48T08_CLKSZ;
     98 		sc->sc_model = "mk48t08";
     99 	}
    100 
    101 	bus_space_map(sc->sc_bst, ma->ma_offset, size, 0, &sc->sc_bsh);
    102 
    103 	sc->sc_year0 = YEAR0;
    104 	mk48txx_attach(sc);
    105 
    106 	aprint_normal(" Time-Keeper RAM\n");
    107 	aprint_normal_dev(self, "%ld bytes NVRAM plus Realtime Clock\n",
    108 	    sc->sc_nvramsz);
    109 }
    110