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rtclock.c revision 1.22
      1  1.22    isaki /*	$NetBSD: rtclock.c,v 1.22 2008/06/25 08:14:59 isaki Exp $	*/
      2   1.1      oki 
      3   1.1      oki /*
      4   1.1      oki  * Copyright 1993, 1994 Masaru Oki
      5   1.1      oki  * All rights reserved.
      6   1.1      oki  *
      7   1.1      oki  * Redistribution and use in source and binary forms, with or without
      8   1.1      oki  * modification, are permitted provided that the following conditions
      9   1.1      oki  * are met:
     10   1.1      oki  * 1. Redistributions of source code must retain the above copyright
     11   1.1      oki  *    notice, this list of conditions and the following disclaimer.
     12   1.1      oki  * 2. Redistributions in binary form must reproduce the above copyright
     13   1.1      oki  *    notice, this list of conditions and the following disclaimer in the
     14   1.1      oki  *    documentation and/or other materials provided with the distribution.
     15   1.1      oki  * 3. All advertising materials mentioning features or use of this software
     16   1.1      oki  *    must display the following acknowledgement:
     17   1.1      oki  *      This product includes software developed by Masaru Oki.
     18   1.1      oki  * 4. The name of the author may not be used to endorse or promote products
     19   1.1      oki  *    derived from this software without specific prior written permission
     20   1.1      oki  *
     21   1.1      oki  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22   1.1      oki  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23   1.1      oki  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24   1.1      oki  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25   1.1      oki  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26   1.1      oki  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27   1.1      oki  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28   1.1      oki  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29   1.1      oki  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30   1.1      oki  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31   1.1      oki  */
     32   1.1      oki 
     33   1.1      oki /*
     34   1.1      oki  * X680x0 internal real time clock interface
     35   1.1      oki  * alarm is not supported.
     36   1.1      oki  */
     37  1.15    lukem 
     38  1.15    lukem #include <sys/cdefs.h>
     39  1.22    isaki __KERNEL_RCSID(0, "$NetBSD: rtclock.c,v 1.22 2008/06/25 08:14:59 isaki Exp $");
     40   1.1      oki 
     41   1.1      oki #include <sys/param.h>
     42   1.1      oki #include <sys/systm.h>
     43   1.1      oki #include <sys/buf.h>
     44   1.1      oki #include <sys/malloc.h>
     45   1.1      oki #include <sys/proc.h>
     46   1.1      oki #include <sys/reboot.h>
     47   1.1      oki #include <sys/file.h>
     48   1.2    perry #include <sys/kernel.h>
     49   1.4  minoura #include <sys/device.h>
     50   1.1      oki 
     51   1.4  minoura #include <machine/bus.h>
     52   1.4  minoura 
     53   1.8  minoura #include <dev/clock_subr.h>
     54   1.8  minoura 
     55   1.4  minoura #include <arch/x68k/dev/rtclock_var.h>
     56   1.4  minoura #include <arch/x68k/dev/intiovar.h>
     57   1.1      oki 
     58  1.19  gdamore static int rtgettod(todr_chip_handle_t, struct clock_ymdhms *);
     59  1.19  gdamore static int rtsettod(todr_chip_handle_t, struct clock_ymdhms *);
     60   1.1      oki 
     61  1.22    isaki static int rtc_match(device_t, cfdata_t, void *);
     62  1.22    isaki static void rtc_attach(device_t, device_t, void *);
     63   1.4  minoura 
     64  1.17      chs int rtclockinit(void);
     65   1.5  minoura 
     66  1.22    isaki CFATTACH_DECL_NEW(rtc, sizeof(struct rtc_softc),
     67  1.14  thorpej     rtc_match, rtc_attach, NULL, NULL);
     68   1.4  minoura 
     69  1.16      chs static int rtc_attached;
     70  1.16      chs 
     71  1.20    isaki static int
     72  1.22    isaki rtc_match(device_t parent, cfdata_t cf, void *aux)
     73   1.4  minoura {
     74   1.4  minoura 	struct intio_attach_args *ia = aux;
     75   1.4  minoura 
     76  1.21    isaki 	if (strcmp(ia->ia_name, "rtc") != 0)
     77   1.4  minoura 		return (0);
     78  1.16      chs 	if (rtc_attached)
     79   1.4  minoura 		return (0);
     80   1.4  minoura 
     81   1.4  minoura 	/* fixed address */
     82   1.4  minoura 	if (ia->ia_addr != RTC_ADDR)
     83   1.4  minoura 		return (0);
     84   1.4  minoura 	if (ia->ia_intr != -1)
     85   1.4  minoura 		return (0);
     86   1.4  minoura 
     87   1.4  minoura 	return (1);
     88   1.4  minoura }
     89   1.4  minoura 
     90  1.20    isaki static void
     91  1.22    isaki rtc_attach(device_t parent, device_t self, void *aux)
     92   1.4  minoura {
     93  1.22    isaki 	struct rtc_softc *sc = device_private(self);
     94   1.4  minoura 	struct intio_attach_args *ia = aux;
     95   1.4  minoura 	int r;
     96   1.4  minoura 
     97  1.16      chs 	rtc_attached = 1;
     98  1.16      chs 
     99   1.4  minoura 	ia->ia_size = 0x20;
    100  1.21    isaki 	r = intio_map_allocate_region(parent, ia, INTIO_MAP_ALLOCATE);
    101   1.4  minoura #ifdef DIAGNOSTIC
    102   1.4  minoura 	if (r)
    103  1.21    isaki 		panic("IO map for RTC corruption??");
    104   1.4  minoura #endif
    105   1.4  minoura 
    106   1.4  minoura 
    107   1.4  minoura 	sc->sc_bst = ia->ia_bst;
    108   1.4  minoura 	bus_space_map(sc->sc_bst, ia->ia_addr, 0x2000, 0, &sc->sc_bht);
    109   1.4  minoura 
    110  1.19  gdamore 	sc->sc_todr.cookie = sc;
    111  1.19  gdamore 	sc->sc_todr.todr_gettime_ymdhms = rtgettod;
    112  1.19  gdamore 	sc->sc_todr.todr_settime_ymdhms = rtsettod;
    113  1.19  gdamore 	todr_attach(&sc->sc_todr);
    114  1.19  gdamore 
    115  1.22    isaki 	aprint_normal(": RP5C15\n");
    116   1.4  minoura }
    117   1.4  minoura 
    118  1.19  gdamore static int
    119  1.19  gdamore rtgettod(todr_chip_handle_t tch, struct clock_ymdhms *dt)
    120   1.1      oki {
    121  1.19  gdamore 	struct rtc_softc *rtc = tch->cookie;
    122   1.1      oki 
    123   1.1      oki 	/* hold clock */
    124   1.4  minoura 	RTC_WRITE(RTC_MODE, RTC_HOLD_CLOCK);
    125   1.1      oki 
    126   1.1      oki 	/* read it */
    127  1.19  gdamore 	dt->dt_sec  = RTC_REG(RTC_SEC10)  * 10 + RTC_REG(RTC_SEC);
    128  1.19  gdamore 	dt->dt_min  = RTC_REG(RTC_MIN10)  * 10 + RTC_REG(RTC_MIN);
    129  1.19  gdamore 	dt->dt_hour = RTC_REG(RTC_HOUR10) * 10 + RTC_REG(RTC_HOUR);
    130  1.19  gdamore 	dt->dt_day  = RTC_REG(RTC_DAY10)  * 10 + RTC_REG(RTC_DAY);
    131  1.19  gdamore 	dt->dt_mon  = RTC_REG(RTC_MON10)  * 10 + RTC_REG(RTC_MON);
    132  1.19  gdamore 	dt->dt_year = RTC_REG(RTC_YEAR10) * 10 + RTC_REG(RTC_YEAR)
    133   1.9    itohy 							+RTC_BASE_YEAR;
    134   1.1      oki 
    135   1.1      oki 	/* let it run again.. */
    136   1.4  minoura 	RTC_WRITE(RTC_MODE, RTC_FREE_CLOCK);
    137   1.1      oki 
    138  1.19  gdamore 	return 0;
    139   1.1      oki }
    140   1.1      oki 
    141   1.1      oki static int
    142  1.19  gdamore rtsettod(todr_chip_handle_t tch, struct clock_ymdhms *dt)
    143   1.1      oki {
    144  1.19  gdamore 	struct rtc_softc *rtc = tch->cookie;
    145   1.1      oki 	u_char sec1, sec2;
    146   1.1      oki 	u_char min1, min2;
    147   1.1      oki 	u_char hour1, hour2;
    148   1.1      oki 	u_char day1, day2;
    149   1.1      oki 	u_char mon1, mon2;
    150   1.1      oki 	u_char year1, year2;
    151   1.1      oki 
    152   1.1      oki 	/* prepare values to be written to clock */
    153  1.19  gdamore 	sec1  = dt->dt_sec  / 10;
    154  1.19  gdamore 	sec2  = dt->dt_sec  % 10;
    155  1.19  gdamore 	min1  = dt->dt_min  / 10;
    156  1.19  gdamore 	min2  = dt->dt_min  % 10;
    157  1.19  gdamore 	hour1 = dt->dt_hour / 10;
    158  1.19  gdamore 	hour2 = dt->dt_hour % 10;
    159  1.19  gdamore 
    160  1.19  gdamore 	day1  = dt->dt_day  / 10;
    161  1.19  gdamore 	day2  = dt->dt_day  % 10;
    162  1.19  gdamore 	mon1  = dt->dt_mon  / 10;
    163  1.19  gdamore 	mon2  = dt->dt_mon  % 10;
    164  1.19  gdamore 	year1 = (dt->dt_year - RTC_BASE_YEAR) / 10;
    165  1.19  gdamore 	year2 = dt->dt_year % 10;
    166   1.1      oki 
    167   1.4  minoura 	RTC_WRITE(RTC_MODE,   RTC_HOLD_CLOCK);
    168   1.4  minoura 	RTC_WRITE(RTC_SEC10,  sec1);
    169   1.4  minoura 	RTC_WRITE(RTC_SEC,    sec2);
    170   1.4  minoura 	RTC_WRITE(RTC_MIN10,  min1);
    171   1.4  minoura 	RTC_WRITE(RTC_MIN,    min2);
    172   1.4  minoura 	RTC_WRITE(RTC_HOUR10, hour1);
    173   1.4  minoura 	RTC_WRITE(RTC_HOUR,   hour2);
    174   1.4  minoura 	RTC_WRITE(RTC_DAY10,  day1);
    175   1.4  minoura 	RTC_WRITE(RTC_DAY,    day2);
    176   1.4  minoura 	RTC_WRITE(RTC_MON10,  mon1);
    177   1.4  minoura 	RTC_WRITE(RTC_MON,    mon2);
    178   1.4  minoura 	RTC_WRITE(RTC_YEAR10, year1);
    179   1.4  minoura 	RTC_WRITE(RTC_YEAR,   year2);
    180   1.4  minoura 	RTC_WRITE(RTC_MODE,   RTC_FREE_CLOCK);
    181   1.1      oki 
    182  1.19  gdamore 	return 0;
    183   1.1      oki }
    184