a2kbbc.c revision 1.15
1/* $NetBSD: a2kbbc.c,v 1.15 2003/08/07 16:26:39 agc 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: a2kbbc.c,v 1.15 2003/08/07 16:26:39 agc 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 97int a2kbbc_match(struct device *, struct cfdata *, void *); 98void a2kbbc_attach(struct device *, struct device *, void *); 99 100CFATTACH_DECL(a2kbbc, sizeof(struct device), 101 a2kbbc_match, a2kbbc_attach, NULL, NULL); 102 103void *a2kclockaddr; 104int a2kugettod(struct timeval *); 105int a2kusettod(struct timeval *); 106 107int 108a2kbbc_match(struct device *pdp, struct cfdata *cfp, void *auxp) 109{ 110 static int a2kbbc_matched = 0; 111 112 if (!matchname("a2kbbc", auxp)) 113 return (0); 114 115 /* Allow only one instance. */ 116 if (a2kbbc_matched) 117 return (0); 118 119 if (/* is_a1200() || */ is_a3000() || is_a4000() 120#ifdef DRACO 121 || is_draco() 122#endif 123 ) 124 return (0); 125 126 a2kclockaddr = (void *)ztwomap(0xdc0000); 127 if (a2kugettod(0) == 0) 128 return (0); 129 130 a2kbbc_matched = 1; 131 return (1); 132} 133 134/* 135 * Attach us to the rtc function pointers. 136 */ 137void 138a2kbbc_attach(struct device *pdp, struct device *dp, void *auxp) 139{ 140 printf("\n"); 141 a2kclockaddr = (void *)ztwomap(0xdc0000); 142 143 ugettod = a2kugettod; 144 usettod = a2kusettod; 145} 146 147int 148a2kugettod(struct timeval *tvp) 149{ 150 struct rtclock2000 *rt; 151 struct clock_ymdhms dt; 152 time_t secs; 153 int i; 154 155 rt = a2kclockaddr; 156 157 /* 158 * hold clock 159 */ 160 rt->control1 |= A2CONTROL1_HOLD; 161 i = 0x1000; 162 while (rt->control1 & A2CONTROL1_BUSY && i--) 163 ; 164 if (rt->control1 & A2CONTROL1_BUSY) 165 return (0); /* Give up and say it's not there */ 166 167 /* Copy the info. Careful about the order! */ 168 dt.dt_sec = rt->second1 * 10 + rt->second2; 169 dt.dt_min = rt->minute1 * 10 + rt->minute2; 170 dt.dt_hour = (rt->hour1 & 3) * 10 + rt->hour2; 171 dt.dt_day = rt->day1 * 10 + rt->day2; 172 dt.dt_mon = rt->month1 * 10 + rt->month2; 173 dt.dt_year = rt->year1 * 10 + rt->year2; 174 dt.dt_wday = rt->weekday; 175 176 /* 177 * The oki clock chip has a register to put the clock into 178 * 12/24h mode. 179 * 180 * clockmode | A2HOUR1_PM 181 * 24h 12h | am = 0, pm = 1 182 * --------------------------------- 183 * 0 12 | 0 184 * 1 1 | 0 185 * .. .. | 0 186 * 11 11 | 0 187 * 12 12 | 1 188 * 13 1 | 1 189 * .. .. | 1 190 * 23 11 | 1 191 * 192 */ 193 194 if ((rt->control3 & A2CONTROL3_24HMODE) == 0) { 195 if ((rt->hour1 & A2HOUR1_PM) == 0 && dt.dt_hour == 12) 196 dt.dt_hour = 0; 197 else if ((rt->hour1 & A2HOUR1_PM) && dt.dt_hour != 12) 198 dt.dt_hour += 12; 199 } 200 201 /* 202 * release the clock 203 */ 204 rt->control1 &= ~A2CONTROL1_HOLD; 205 206 dt.dt_year += CLOCK_BASE_YEAR; 207 if (dt.dt_year < STARTOFTIME) 208 dt.dt_year += 100; 209 210 if ((dt.dt_hour > 23) || 211 (dt.dt_day > 31) || 212 (dt.dt_mon > 12) || 213 /* (dt.dt_year < STARTOFTIME) || */ (dt.dt_year > 2036)) 214 return (0); 215 216 secs = clock_ymdhms_to_secs(&dt); 217 if (tvp) { 218 tvp->tv_sec = secs; 219 tvp->tv_usec = 0; 220 } 221 return (1); 222} 223 224int 225a2kusettod(struct timeval *tvp) 226{ 227 struct rtclock2000 *rt; 228 struct clock_ymdhms dt; 229 int ampm, i; 230 time_t secs; 231 232 secs = tvp->tv_sec; 233 rt = a2kclockaddr; 234 /* 235 * there seem to be problems with the bitfield addressing 236 * currently used.. 237 */ 238 if (! rt) 239 return (0); 240 241 clock_secs_to_ymdhms(secs, &dt); 242 243 /* 244 * hold clock 245 */ 246 rt->control1 |= A2CONTROL1_HOLD; 247 i = 0x1000; 248 while (rt->control1 & A2CONTROL1_BUSY && i--) 249 ; 250 if (rt->control1 & A2CONTROL1_BUSY) 251 return (0); /* Give up and say it's not there */ 252 253 ampm = 0; 254 if ((rt->control3 & A2CONTROL3_24HMODE) == 0) { 255 if (dt.dt_hour >= 12) { 256 ampm = A2HOUR1_PM; 257 if (dt.dt_hour != 12) 258 dt.dt_hour -= 12; 259 } else if (dt.dt_hour == 0) { 260 dt.dt_hour = 12; 261 } 262 } 263 rt->hour1 = (dt.dt_hour / 10) | ampm; 264 rt->hour2 = dt.dt_hour % 10; 265 rt->second1 = dt.dt_sec / 10; 266 rt->second2 = dt.dt_sec % 10; 267 rt->minute1 = dt.dt_min / 10; 268 rt->minute2 = dt.dt_min % 10; 269 rt->day1 = dt.dt_day / 10; 270 rt->day2 = dt.dt_day % 10; 271 rt->month1 = dt.dt_mon / 10; 272 rt->month2 = dt.dt_mon % 10; 273 rt->year1 = (dt.dt_year / 10) % 10; 274 rt->year2 = dt.dt_year % 10; 275 rt->weekday = dt.dt_wday; 276 277 /* 278 * release the clock 279 */ 280 rt->control2 &= ~A2CONTROL1_HOLD; 281 282 return (1); 283} 284