mcclock_mace.c revision 1.2
1 /* $NetBSD: mcclock_mace.c,v 1.2 2004/01/19 00:30:17 sekiya Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Antti Kantee. All Rights Reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by the NetBSD 17 * Foundation, Inc. and its contributors. 18 * 4. The name of the company nor the name of the author may be used to 19 * endorse or promote products derived from this software without specific 20 * prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY CAUASLITY LIMITED ``AS IS'' AND ANY EXPRESS 23 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 25 * DISCLAIMED. IN NO EVENT SHALL CAUSALITY LIMITED OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1998 Mark Brinicombe. 37 * Copyright (c) 1998 Causality Limited. 38 * All rights reserved. 39 * 40 * Written by Mark Brinicombe, Causality Limited 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by Mark Brinicombe 53 * for the NetBSD Project. 54 * 4. The name of the company nor the name of the author may be used to 55 * endorse or promote products derived from this software without specific 56 * prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY CAUASLITY LIMITED ``AS IS'' AND ANY EXPRESS 59 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 60 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 61 * DISCLAIMED. IN NO EVENT SHALL CAUSALITY LIMITED OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 64 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 #include <sys/cdefs.h> 72 __KERNEL_RCSID(0, "$NetBSD: mcclock_mace.c,v 1.2 2004/01/19 00:30:17 sekiya Exp $"); 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 77 #include <machine/cpu.h> 78 #include <machine/autoconf.h> 79 #include <machine/bus.h> 80 #include <machine/machtype.h> 81 82 #include <dev/clock_subr.h> 83 #include <dev/ic/ds1687reg.h> 84 85 #include <sgimips/mace/macevar.h> 86 87 #include <sgimips/sgimips/clockvar.h> 88 89 struct mcclock_mace_softc { 90 struct device sc_dev; 91 92 bus_space_tag_t sc_st; 93 bus_space_handle_t sc_sh; 94 }; 95 96 static int mcclock_mace_match(struct device *, struct cfdata *, void *); 97 static void mcclock_mace_attach(struct device*, struct device *, void *); 98 99 static void mcclock_mace_init(struct device *); 100 static void mcclock_mace_get(struct device *, struct clock_ymdhms *); 101 static void mcclock_mace_set(struct device *, struct clock_ymdhms *); 102 103 unsigned int ds1687_read(void *arg, unsigned int addr); 104 void ds1687_write(void *arg, unsigned int addr, unsigned int data); 105 106 const struct clockfns mcclock_mace_clockfns = { 107 mcclock_mace_init, mcclock_mace_get, mcclock_mace_set 108 }; 109 110 CFATTACH_DECL(mcclock_mace, sizeof(struct mcclock_mace_softc), 111 mcclock_mace_match, mcclock_mace_attach, NULL, NULL); 112 113 static int 114 mcclock_mace_match(struct device *parent, struct cfdata *match, void *aux) 115 { 116 if (mach_type == MACH_SGI_IP32) 117 return 1; 118 return 0; 119 } 120 121 void 122 mcclock_mace_attach(struct device *parent, struct device *self, void *aux) 123 { 124 struct mcclock_mace_softc *sc = (void *)self; 125 struct mace_attach_args *maa = aux; 126 127 sc->sc_st = maa->maa_st; 128 /* XXX should be bus_space_map() */ 129 if (bus_space_subregion(maa->maa_st, maa->maa_sh, 130 maa->maa_offset, 0, &sc->sc_sh)) 131 panic("mcclock_mace_attach: couldn't map"); 132 133 /* 134 * We want a fixed format: 24-hour, BCD data, so just force the 135 * RTC to this mode; if there was junk there we'll be able to 136 * fix things up later when we discover the time read back is 137 * no good. 138 */ 139 ds1687_write(sc, DS1687_CONTROLA, DS1687_DV1 | DS1687_BANK1); 140 ds1687_write(sc, DS1687_CONTROLB, DS1687_24HRS); 141 142 /* XXXrkb: init kickstart/wakeup stuff */ 143 144 if (!(ds1687_read(sc, DS1687_CONTROLD) & DS1687_VRT)) 145 printf(": lithium cell is dead, RTC unreliable"); 146 147 printf("\n"); 148 clockattach(&sc->sc_dev, &mcclock_mace_clockfns); 149 } 150 151 /* 152 * We need to use the following two functions from 153 * DS1687_PUT/GETTOD(). Hence the names. 154 */ 155 unsigned int 156 ds1687_read(void *arg, unsigned int addr) 157 { 158 struct mcclock_mace_softc *sc = (struct mcclock_mace_softc *)arg; 159 160 return (bus_space_read_1(sc->sc_st, sc->sc_sh, addr)); 161 } 162 163 void 164 ds1687_write(void *arg, unsigned int addr, unsigned int data) 165 { 166 struct mcclock_mace_softc *sc = (struct mcclock_mace_softc *)arg; 167 168 bus_space_write_1(sc->sc_st, sc->sc_sh, addr, data); 169 } 170 171 static void 172 mcclock_mace_init(struct device *dev) 173 { 174 175 return; 176 } 177 178 static void 179 mcclock_mace_get(struct device *dev, struct clock_ymdhms *dt) 180 { 181 struct mcclock_mace_softc *sc = (struct mcclock_mace_softc *)dev; 182 ds1687_todregs regs; 183 int s; 184 185 s = splhigh(); 186 DS1687_GETTOD(sc, ®s); 187 splx(s); 188 189 dt->dt_sec = FROMBCD(regs[DS1687_SOFT_SEC]); 190 dt->dt_min = FROMBCD(regs[DS1687_SOFT_MIN]); 191 dt->dt_hour = FROMBCD(regs[DS1687_SOFT_HOUR]); 192 dt->dt_wday = FROMBCD(regs[DS1687_SOFT_DOW]); 193 dt->dt_day = FROMBCD(regs[DS1687_SOFT_DOM]); 194 dt->dt_mon = FROMBCD(regs[DS1687_SOFT_MONTH]); 195 dt->dt_year = FROMBCD(regs[DS1687_SOFT_YEAR]) + 196 (100 * FROMBCD(regs[DS1687_SOFT_CENTURY])); 197 } 198 199 static void 200 mcclock_mace_set(struct device *dev, struct clock_ymdhms *dt) 201 { 202 struct mcclock_mace_softc *sc = (struct mcclock_mace_softc *)dev; 203 ds1687_todregs regs; 204 int s; 205 206 memset(®s, 0, sizeof(regs)); 207 208 regs[DS1687_SOFT_SEC] = TOBCD(dt->dt_sec); 209 regs[DS1687_SOFT_MIN] = TOBCD(dt->dt_min); 210 regs[DS1687_SOFT_HOUR] = TOBCD(dt->dt_hour); 211 regs[DS1687_SOFT_DOW] = TOBCD(dt->dt_wday); 212 regs[DS1687_SOFT_DOM] = TOBCD(dt->dt_day); 213 regs[DS1687_SOFT_MONTH] = TOBCD(dt->dt_mon); 214 regs[DS1687_SOFT_YEAR] = TOBCD(dt->dt_year % 100); 215 regs[DS1687_SOFT_CENTURY] = TOBCD(dt->dt_year / 100); 216 s = splhigh(); 217 DS1687_PUTTOD(sc, ®s); 218 splx(s); 219 } 220
Indexes created Wed Oct 22 13:09:56 GMT 2025