mcclock_mace.c revision 1.12
1 /* $NetBSD: mcclock_mace.c,v 1.12 2009/12/13 11:03:33 tsutsui 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. The name of the company nor the name of the author may be used to 15 * endorse or promote products derived from this software without specific 16 * prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY CAUASLITY LIMITED ``AS IS'' AND ANY EXPRESS 19 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21 * DISCLAIMED. IN NO EVENT SHALL CAUSALITY LIMITED OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 /* 32 * Copyright (c) 1998 Mark Brinicombe. 33 * Copyright (c) 1998 Causality Limited. 34 * All rights reserved. 35 * 36 * Written by Mark Brinicombe, Causality Limited 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by Mark Brinicombe 49 * for the NetBSD Project. 50 * 4. The name of the company nor the name of the author may be used to 51 * endorse or promote products derived from this software without specific 52 * prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY CAUASLITY LIMITED ``AS IS'' AND ANY EXPRESS 55 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 56 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 57 * DISCLAIMED. IN NO EVENT SHALL CAUSALITY LIMITED OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 60 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 */ 66 67 #include <sys/cdefs.h> 68 __KERNEL_RCSID(0, "$NetBSD: mcclock_mace.c,v 1.12 2009/12/13 11:03:33 tsutsui Exp $"); 69 70 #include <sys/param.h> 71 #include <sys/systm.h> 72 #include <sys/device.h> 73 74 #include <machine/cpu.h> 75 #include <machine/autoconf.h> 76 #include <machine/bus.h> 77 #include <machine/machtype.h> 78 79 #include <dev/clock_subr.h> 80 #include <dev/ic/ds1687reg.h> 81 82 #include <sgimips/mace/macevar.h> 83 84 #include <sgimips/sgimips/clockvar.h> 85 86 struct mcclock_mace_softc { 87 struct device sc_dev; 88 89 struct todr_chip_handle sc_todrch; 90 91 bus_space_tag_t sc_st; 92 bus_space_handle_t sc_sh; 93 }; 94 95 static struct mcclock_mace_softc *mace0 = NULL; 96 97 static int mcclock_mace_match(struct device *, struct cfdata *, void *); 98 static void mcclock_mace_attach(struct device*, struct device *, void *); 99 100 static int mcclock_mace_gettime_ymdhms(struct todr_chip_handle *, 101 struct clock_ymdhms *); 102 static int mcclock_mace_settime_ymdhms(struct todr_chip_handle *, 103 struct clock_ymdhms *); 104 105 unsigned int ds1687_read(void *arg, unsigned int addr); 106 void ds1687_write(void *arg, unsigned int addr, unsigned int data); 107 108 void mcclock_poweroff(void); 109 110 111 CFATTACH_DECL(mcclock_mace, sizeof(struct mcclock_mace_softc), 112 mcclock_mace_match, mcclock_mace_attach, NULL, NULL); 113 114 static int 115 mcclock_mace_match(struct device *parent, struct cfdata *match, void *aux) 116 { 117 return 1; 118 } 119 120 void 121 mcclock_mace_attach(struct device *parent, struct device *self, void *aux) 122 { 123 struct mcclock_mace_softc *sc = (void *)self; 124 struct mace_attach_args *maa = aux; 125 126 sc->sc_st = maa->maa_st; 127 /* XXX should be bus_space_map() */ 128 if (bus_space_subregion(maa->maa_st, maa->maa_sh, 129 maa->maa_offset, 0, &sc->sc_sh)) 130 panic("mcclock_mace_attach: couldn't map"); 131 132 /* 133 * We want a fixed format: 24-hour, BCD data, so just force the 134 * RTC to this mode; if there was junk there we'll be able to 135 * fix things up later when we discover the time read back is 136 * no good. 137 */ 138 ds1687_write(sc, DS1687_CONTROLA, DS1687_DV1 | DS1687_BANK1); 139 ds1687_write(sc, DS1687_CONTROLB, DS1687_24HRS); 140 141 /* XXXrkb: init kickstart/wakeup stuff */ 142 143 if (!(ds1687_read(sc, DS1687_CONTROLD) & DS1687_VRT)) 144 printf(": lithium cell is dead, RTC unreliable"); 145 146 printf("\n"); 147 148 sc->sc_todrch.cookie = sc; 149 sc->sc_todrch.todr_gettime_ymdhms = mcclock_mace_gettime_ymdhms; 150 sc->sc_todrch.todr_settime_ymdhms = mcclock_mace_settime_ymdhms; 151 sc->sc_todrch.todr_setwen = NULL; 152 153 todr_attach(&sc->sc_todrch); 154 mace0 = sc; 155 } 156 157 /* 158 * We need to use the following two functions from 159 * DS1687_PUT/GETTOD(). Hence the names. 160 */ 161 unsigned int 162 ds1687_read(void *arg, unsigned int addr) 163 { 164 struct mcclock_mace_softc *sc = (struct mcclock_mace_softc *)arg; 165 166 return (bus_space_read_1(sc->sc_st, sc->sc_sh, addr)); 167 } 168 169 void 170 ds1687_write(void *arg, unsigned int addr, unsigned int data) 171 { 172 struct mcclock_mace_softc *sc = (struct mcclock_mace_softc *)arg; 173 174 bus_space_write_1(sc->sc_st, sc->sc_sh, addr, data); 175 } 176 177 static int 178 mcclock_mace_gettime_ymdhms(struct todr_chip_handle *todrch, 179 struct clock_ymdhms *dt) 180 { 181 struct mcclock_mace_softc *sc = 182 (struct mcclock_mace_softc *)todrch->cookie; 183 ds1687_todregs regs; 184 int s; 185 186 s = splhigh(); 187 DS1687_GETTOD(sc, ®s); 188 splx(s); 189 190 dt->dt_sec = FROMBCD(regs[DS1687_SOFT_SEC]); 191 dt->dt_min = FROMBCD(regs[DS1687_SOFT_MIN]); 192 dt->dt_hour = FROMBCD(regs[DS1687_SOFT_HOUR]); 193 dt->dt_wday = FROMBCD(regs[DS1687_SOFT_DOW]); 194 dt->dt_day = FROMBCD(regs[DS1687_SOFT_DOM]); 195 dt->dt_mon = FROMBCD(regs[DS1687_SOFT_MONTH]); 196 dt->dt_year = FROMBCD(regs[DS1687_SOFT_YEAR]) + 197 (100 * FROMBCD(regs[DS1687_SOFT_CENTURY])); 198 199 return (0); 200 } 201 202 static int 203 mcclock_mace_settime_ymdhms(struct todr_chip_handle *todrch, 204 struct clock_ymdhms *dt) 205 { 206 struct mcclock_mace_softc *sc = 207 (struct mcclock_mace_softc *)todrch->cookie; 208 ds1687_todregs regs; 209 int s; 210 211 memset(®s, 0, sizeof(regs)); 212 213 regs[DS1687_SOFT_SEC] = TOBCD(dt->dt_sec); 214 regs[DS1687_SOFT_MIN] = TOBCD(dt->dt_min); 215 regs[DS1687_SOFT_HOUR] = TOBCD(dt->dt_hour); 216 regs[DS1687_SOFT_DOW] = TOBCD(dt->dt_wday); 217 regs[DS1687_SOFT_DOM] = TOBCD(dt->dt_day); 218 regs[DS1687_SOFT_MONTH] = TOBCD(dt->dt_mon); 219 regs[DS1687_SOFT_YEAR] = TOBCD(dt->dt_year % 100); 220 regs[DS1687_SOFT_CENTURY] = TOBCD(dt->dt_year / 100); 221 s = splhigh(); 222 DS1687_PUTTOD(sc, ®s); 223 splx(s); 224 225 return (0); 226 } 227 228 void 229 mcclock_poweroff(void) 230 { 231 int s; 232 uint8_t a, xctl_a, xctl_b; 233 234 if (mace0 == NULL) 235 return; 236 237 s = splhigh(); 238 a = ds1687_read(mace0, DS1687_CONTROLA); 239 a &= ~DS1687_DV2; 240 a |= DS1687_DV1; 241 ds1687_write(mace0, DS1687_CONTROLA, a | DS1687_BANK1); 242 wbflush(); 243 244 xctl_b = ds1687_read(mace0, DS1687_BANK1_XCTRL4B); 245 xctl_b |= DS1687_X4B_ABE | DS1687_X4B_KIE; 246 ds1687_write(mace0, DS1687_BANK1_XCTRL4B, xctl_b); 247 248 xctl_a = ds1687_read(mace0, DS1687_BANK1_XCTRL4A); 249 xctl_a &= ~(DS1687_X4A_RCF | DS1687_X4A_WAF | DS1687_X4A_KF); 250 ds1687_write(mace0, DS1687_BANK1_XCTRL4A, xctl_a); 251 wbflush(); 252 253 /* and down we go */ 254 ds1687_write(mace0, DS1687_BANK1_XCTRL4A, xctl_a | DS1687_X4A_PAB); 255 ds1687_write(mace0, DS1687_CONTROLA, a); 256 wbflush(); 257 while(1); 258 } 259
Indexes created Tue Sep 30 11:09:46 GMT 2025