mkclock.c revision 1.2.8.1
1 /* $NetBSD: mkclock.c,v 1.2.8.1 2002/10/18 02:38:54 nathanw Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Wayne Knowles 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/param.h> 40 #include <sys/kernel.h> 41 #include <sys/device.h> 42 #include <sys/systm.h> 43 44 #include <dev/clock_subr.h> 45 46 #include <machine/cpu.h> 47 #include <machine/mainboard.h> 48 #include <machine/autoconf.h> 49 #include <machine/sysconf.h> 50 #include <machine/bus.h> 51 52 #include <mipsco/obio/clockreg.h> 53 54 struct mkclock_softc { 55 struct device dev; 56 bus_space_tag_t sc_bst; 57 bus_space_handle_t sc_bsh; 58 }; 59 60 static int mkclock_match (struct device *, struct cfdata *, void *); 61 static void mkclock_attach (struct device *, struct device *, void *); 62 63 CFATTACH_DECL(mkclock, sizeof(struct mkclock_softc), 64 mkclock_match, mkclock_attach, NULL, NULL); 65 66 static struct mkclock_softc *mk0; 67 68 void mkclock_read (struct clock_ymdhms *); 69 void mkclock_write (struct clock_ymdhms *); 70 71 static int mk_read (struct mkclock_softc *, int); 72 static void mk_write (struct mkclock_softc *, int, int); 73 74 int 75 mkclock_match(parent, cf, aux) 76 struct device *parent; 77 struct cfdata *cf; 78 void *aux; 79 { 80 return 1; 81 } 82 83 void 84 mkclock_attach(parent, self, aux) 85 struct device *parent, *self; 86 void *aux; 87 { 88 struct mkclock_softc *sc = (void *)self; 89 struct confargs *ca = aux; 90 91 sc->sc_bst = ca->ca_bustag; 92 if (bus_space_map(ca->ca_bustag, ca->ca_addr, 93 0x10000, 94 BUS_SPACE_MAP_LINEAR, 95 &sc->sc_bsh) != 0) { 96 printf(": cannot map registers\n"); 97 return; 98 } 99 100 platform.write_todr = mkclock_write; 101 platform.read_todr = mkclock_read; 102 mk0 = sc; 103 printf("\n"); 104 } 105 106 static int 107 mk_read(sc, reg) 108 struct mkclock_softc *sc; 109 int reg; 110 { 111 u_int8_t val; 112 113 val = bus_space_read_1(sc->sc_bst, sc->sc_bsh, DATA_PORT + reg*4); 114 return FROMBCD(val); 115 } 116 117 static void 118 mk_write(sc, reg, val) 119 struct mkclock_softc *sc; 120 int reg, val; 121 { 122 bus_space_write_1(sc->sc_bst, sc->sc_bsh, 123 DATA_PORT + reg*4, TOBCD(val)); 124 } 125 126 void 127 mkclock_read(dt) 128 struct clock_ymdhms *dt; 129 { 130 struct mkclock_softc *sc = mk0; 131 int s = splclock(); 132 133 bus_space_write_1(sc->sc_bst, sc->sc_bsh, RTC_PORT, READ_CLOCK); 134 dt->dt_sec = mk_read(sc, 0); 135 dt->dt_min = mk_read(sc, 1); 136 dt->dt_hour = mk_read(sc, 2); 137 dt->dt_wday = mk_read(sc, 3); 138 dt->dt_day = mk_read(sc, 4); 139 dt->dt_mon = mk_read(sc, 5); 140 dt->dt_year = mk_read(sc, 6); 141 bus_space_write_1(sc->sc_bst, sc->sc_bsh, RTC_PORT, 0); 142 splx(s); 143 144 dt->dt_year = dt->dt_year + (dt->dt_year >= 70 ? 1900 : 2000); 145 } 146 147 void 148 mkclock_write(dt) 149 struct clock_ymdhms *dt; 150 { 151 struct mkclock_softc *sc = mk0; 152 int year, s; 153 154 year = dt->dt_year % 100; 155 156 s = splclock(); 157 bus_space_write_1(sc->sc_bst, sc->sc_bsh, RTC_PORT, SET_CLOCK); 158 mk_write(sc, 0, dt->dt_sec); 159 mk_write(sc, 1, dt->dt_min); 160 mk_write(sc, 2, dt->dt_hour); 161 /* week day not set */ 162 mk_write(sc, 4, dt->dt_day); 163 mk_write(sc, 5, dt->dt_mon); 164 mk_write(sc, 6, year); 165 bus_space_write_1(sc->sc_bst, sc->sc_bsh, RTC_PORT, 0); 166 splx(s); 167 } 168
Indexes created Sun Oct 26 13:09:57 GMT 2025