sys/arch/arc/jazz/mcclock_jazzio.c

   1 /*      $NetBSD: mcclock_jazzio.c,v 1.10 2008/03/28 19:05:49 tsutsui Exp $      */
   2 /*      $OpenBSD: clock_mc.c,v 1.9 1998/03/16 09:38:26 pefo Exp $       */
   3 /*      NetBSD: clock_mc.c,v 1.2 1995/06/28 04:30:30 cgd Exp    */
   4
   5 /*
   6  * Copyright (c) 1992, 1993
   7  *      The Regents of the University of California.  All rights reserved.
   8  *
   9  * This code is derived from software contributed to Berkeley by
  10  * the Systems Programming Group of the University of Utah Computer
  11  * Science Department and Ralph Campbell.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  * 1. Redistributions of source code must retain the above copyright
  17  *    notice, this list of conditions and the following disclaimer.
  18  * 2. Redistributions in binary form must reproduce the above copyright
  19  *    notice, this list of conditions and the following disclaimer in the
  20  *    documentation and/or other materials provided with the distribution.
  21  * 3. Neither the name of the University nor the names of its contributors
  22  *    may be used to endorse or promote products derived from this software
  23  *    without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  *
  37  * from: Utah Hdr: clock.c 1.18 91/01/21
  38  *
  39  *      @(#)clock.c     8.1 (Berkeley) 6/10/93
  40  */
  41 /*
  42  * Copyright (c) 1988 University of Utah.
  43  *
  44  * This code is derived from software contributed to Berkeley by
  45  * the Systems Programming Group of the University of Utah Computer
  46  * Science Department and Ralph Campbell.
  47  *
  48  * Redistribution and use in source and binary forms, with or without
  49  * modification, are permitted provided that the following conditions
  50  * are met:
  51  * 1. Redistributions of source code must retain the above copyright
  52  *    notice, this list of conditions and the following disclaimer.
  53  * 2. Redistributions in binary form must reproduce the above copyright
  54  *    notice, this list of conditions and the following disclaimer in the
  55  *    documentation and/or other materials provided with the distribution.
  56  * 3. All advertising materials mentioning features or use of this software
  57  *    must display the following acknowledgement:
  58  *      This product includes software developed by the University of
  59  *      California, Berkeley and its contributors.
  60  * 4. Neither the name of the University nor the names of its contributors
  61  *    may be used to endorse or promote products derived from this software
  62  *    without specific prior written permission.
  63  *
  64  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  65  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  66  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  67  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  68  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  69  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  70  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  71  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  72  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  73  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  74  * SUCH DAMAGE.
  75  *
  76  * from: Utah Hdr: clock.c 1.18 91/01/21
  77  *
  78  *      @(#)clock.c     8.1 (Berkeley) 6/10/93
  79  */
  80
  81 #include <sys/cdefs.h>
  82 __KERNEL_RCSID(0, "$NetBSD: mcclock_jazzio.c,v 1.10 2008/03/28 19:05:49 tsutsui Exp $");
  83
  84 #include <sys/param.h>
  85 #include <sys/systm.h>
  86 #include <sys/device.h>
  87
  88 #include <machine/autoconf.h>
  89 #include <machine/bus.h>
  90
  91 #include <dev/clock_subr.h>
  92
  93 #include <dev/ic/mc146818reg.h>
  94 #include <dev/ic/mc146818var.h>
  95
  96 #include <arc/jazz/jazziovar.h>
  97 #include <arc/jazz/mcclock_jazziovar.h>
  98
  99 int mcclock_jazzio_match(device_t, cfdata_t, void *);
 100 void mcclock_jazzio_attach(device_t, device_t, void *);
 101
 102 CFATTACH_DECL_NEW(mcclock_jazzio, sizeof(struct mc146818_softc),
 103     mcclock_jazzio_match, mcclock_jazzio_attach, NULL, NULL);
 104
 105 struct mcclock_jazzio_config *mcclock_jazzio_conf = NULL;
 106 static int mcclock_jazzio_found = 0;
 107
 108 int
 109 mcclock_jazzio_match(device_t parent, cfdata_t cf, void *aux)
 110 {
 111         struct jazzio_attach_args *ja = aux;
 112
 113         /* make sure that we're looking for this type of device. */
 114         if (strcmp(ja->ja_name, "dallas_rtc") != 0)
 115                 return 0;
 116
 117         if (mcclock_jazzio_found)
 118                 return 0;
 119
 120         return 1;
 121 }
 122
 123 void
 124 mcclock_jazzio_attach(device_t parent, device_t self, void *aux)
 125 {
 126         struct mc146818_softc *sc = device_private(self);
 127         struct jazzio_attach_args *ja = aux;
 128
 129         if (mcclock_jazzio_conf == NULL)
 130                 panic("mcclock_jazzio_conf isn't initialized");
 131
 132         sc->sc_dev = self;
 133         sc->sc_bst = ja->ja_bust;
 134         if (bus_space_map(sc->sc_bst,
 135             ja->ja_addr, mcclock_jazzio_conf->mjc_iosize, 0, &sc->sc_bsh)) {
 136                 aprint_error(": unable to map I/O space\n");
 137                 return;
 138         }
 139
 140         sc->sc_year0 = 1980;
 141         sc->sc_mcread  = mcclock_jazzio_conf->mjc_mc_read;
 142         sc->sc_mcwrite = mcclock_jazzio_conf->mjc_mc_write;
 143
 144         mc146818_attach(sc);
 145
 146         aprint_normal("\n");
 147
 148         /* Turn interrupts off, just in case. */
 149         (*sc->sc_mcwrite)(sc, MC_REGB, MC_REGB_BINARY | MC_REGB_24HR);
 150
 151         mcclock_jazzio_found = 1;
 152 }