sys/arch/amiga/dev/a34kbbc.c

   1 /*      $NetBSD: a34kbbc.c,v 1.19 2006/09/11 17:18:00 gdamore Exp $ */
   2
   3 /*
   4  * Copyright (c) 1982, 1990 The Regents of the University of California.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * the Systems Programming Group of the University of Utah Computer
   9  * Science Department.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  *
  35  * from: Utah $Hdr: clock.c 1.18 91/01/21$
  36  *
  37  *      @(#)clock.c     7.6 (Berkeley) 5/7/91
  38  */
  39
  40 /*
  41  * Copyright (c) 1988 University of Utah.
  42  *
  43  * This code is derived from software contributed to Berkeley by
  44  * the Systems Programming Group of the University of Utah Computer
  45  * Science Department.
  46  *
  47  * Redistribution and use in source and binary forms, with or without
  48  * modification, are permitted provided that the following conditions
  49  * are met:
  50  * 1. Redistributions of source code must retain the above copyright
  51  *    notice, this list of conditions and the following disclaimer.
  52  * 2. Redistributions in binary form must reproduce the above copyright
  53  *    notice, this list of conditions and the following disclaimer in the
  54  *    documentation and/or other materials provided with the distribution.
  55  * 3. All advertising materials mentioning features or use of this software
  56  *    must display the following acknowledgement:
  57  *      This product includes software developed by the University of
  58  *      California, Berkeley and its contributors.
  59  * 4. Neither the name of the University nor the names of its contributors
  60  *    may be used to endorse or promote products derived from this software
  61  *    without specific prior written permission.
  62  *
  63  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  64  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  65  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  66  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  67  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  68  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  69  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  70  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  71  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  72  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  73  * SUCH DAMAGE.
  74  *
  75  * from: Utah $Hdr: clock.c 1.18 91/01/21$
  76  *
  77  *      @(#)clock.c     7.6 (Berkeley) 5/7/91
  78  */
  79
  80 #include <sys/cdefs.h>
  81 __KERNEL_RCSID(0, "$NetBSD: a34kbbc.c,v 1.19 2006/09/11 17:18:00 gdamore Exp $");
  82
  83 #include <sys/param.h>
  84 #include <sys/kernel.h>
  85 #include <sys/device.h>
  86 #include <sys/systm.h>
  87 #include <machine/psl.h>
  88 #include <machine/cpu.h>
  89 #include <amiga/amiga/device.h>
  90 #include <amiga/amiga/custom.h>
  91 #include <amiga/amiga/cia.h>
  92 #include <amiga/dev/rtc.h>
  93 #include <amiga/dev/zbusvar.h>
  94
  95 #include <dev/clock_subr.h>
  96
  97 int a34kbbc_match(struct device *, struct cfdata *, void *);
  98 void a34kbbc_attach(struct device *, struct device *, void *);
  99
 100 CFATTACH_DECL(a34kbbc, sizeof(struct device),
 101     a34kbbc_match, a34kbbc_attach, NULL, NULL);
 102
 103 void *a34kclockaddr;
 104 int a34kugettod(todr_chip_handle_t, struct clock_ymdhms *);
 105 int a34kusettod(todr_chip_handle_t, struct clock_ymdhms *);
 106 static struct todr_chip_handle a34ktodr;
 107
 108 int
 109 a34kbbc_match(struct device *pdp, struct cfdata *cfp, void *auxp)
 110 {
 111         struct clock_ymdhms dt;
 112         static int a34kbbc_matched = 0;
 113
 114         if (!matchname("a34kbbc", auxp))
 115                 return(0);
 116
 117         /* Allow only one instance. */
 118         if (a34kbbc_matched)
 119                 return(0);
 120
 121         if (!(is_a3000() || is_a4000()))
 122                 return(0);
 123
 124         a34kclockaddr = (void *)__UNVOLATILE(ztwomap(0xdc0000));
 125         if (a34kugettod(&a34ktodr, &dt) != 0)
 126                 return(0);
 127
 128         a34kbbc_matched = 1;
 129         return(1);
 130 }
 131
 132 /*
 133  * Attach us to the rtc function pointers.
 134  */
 135 void
 136 a34kbbc_attach(struct device *pdp, struct device *dp, void *auxp)
 137 {
 138         printf("\n");
 139         a34kclockaddr = (void *)__UNVOLATILE(ztwomap(0xdc0000));
 140
 141         a34ktodr.cookie = a34kclockaddr;
 142         a34ktodr.todr_gettime_ymdhms = a34kugettod;
 143         a34ktodr.todr_settime_ymdhms = a34kusettod;
 144         todr_attach(&a34ktodr);
 145 }
 146
 147 int
 148 a34kugettod(todr_chip_handle_t h, struct clock_ymdhms *dt)
 149 {
 150         struct rtclock3000 *rt;
 151
 152         rt = a34kclockaddr;
 153
 154         /* hold clock */
 155         rt->control1 = A3CONTROL1_HOLD_CLOCK;
 156
 157         /* Copy the info.  Careful about the order! */
 158         dt->dt_sec   = rt->second1 * 10 + rt->second2;
 159         dt->dt_min   = rt->minute1 * 10 + rt->minute2;
 160         dt->dt_hour  = rt->hour1   * 10 + rt->hour2;
 161         dt->dt_wday  = rt->weekday;
 162         dt->dt_day   = rt->day1    * 10 + rt->day2;
 163         dt->dt_mon   = rt->month1  * 10 + rt->month2;
 164         dt->dt_year  = rt->year1   * 10 + rt->year2;
 165
 166         dt->dt_year += CLOCK_BASE_YEAR;
 167         /* let it run again.. */
 168         rt->control1 = A3CONTROL1_FREE_CLOCK;
 169
 170         if (dt->dt_year < STARTOFTIME)
 171                 dt->dt_year += 100;
 172
 173
 174         /*
 175          * These checks are mostly redundant against those already in the
 176          * generic todr, but apparently the attach code checks against the
 177          * return value of this function, so we have to include a check here,
 178          * too.
 179          */
 180         if ((dt->dt_hour > 23) ||
 181             (dt->dt_wday > 6) ||
 182             (dt->dt_day  > 31) ||
 183             (dt->dt_mon  > 12) ||
 184             /* (dt.dt_year < STARTOFTIME) || */ (dt->dt_year > 2036))
 185                 return (EINVAL);
 186
 187         return (0);
 188 }
 189
 190 int
 191 a34kusettod(todr_chip_handle_t h, struct clock_ymdhms *dt)
 192 {
 193         struct rtclock3000 *rt;
 194
 195         rt = a34kclockaddr;
 196         /*
 197          * there seem to be problems with the bitfield addressing
 198          * currently used..
 199          */
 200
 201         if (! rt)
 202                 return (ENXIO);
 203
 204         rt->control1 = A3CONTROL1_HOLD_CLOCK;           /* implies mode 0 */
 205         rt->second1 = dt->dt_sec / 10;
 206         rt->second2 = dt->dt_sec % 10;
 207         rt->minute1 = dt->dt_min / 10;
 208         rt->minute2 = dt->dt_min % 10;
 209         rt->hour1   = dt->dt_hour / 10;
 210         rt->hour2   = dt->dt_hour % 10;
 211         rt->weekday = dt->dt_wday;
 212         rt->day1    = dt->dt_day / 10;
 213         rt->day2    = dt->dt_day % 10;
 214         rt->month1  = dt->dt_mon / 10;
 215         rt->month2  = dt->dt_mon % 10;
 216         rt->year1   = (dt->dt_year / 10) % 10;
 217         rt->year2   = dt->dt_year % 10;
 218         rt->control1 = A3CONTROL1_HOLD_CLOCK | 1;       /* mode 1 registers */
 219         rt->leapyear = dt->dt_year;             /* XXX implicit % 4 */
 220         rt->control1 = A3CONTROL1_FREE_CLOCK;           /* implies mode 1 */
 221
 222         return (0);
 223 }