a2kbbc.c revision 1.8
1/* $NetBSD: a2kbbc.c,v 1.8 2000/01/02 18:29:22 is Exp $ */ 2 3/* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * from: Utah $Hdr: clock.c 1.18 91/01/21$ 41 * 42 * @(#)clock.c 7.6 (Berkeley) 5/7/91 43 */ 44 45#include <sys/param.h> 46#include <sys/kernel.h> 47#include <sys/device.h> 48#include <sys/systm.h> 49#include <machine/psl.h> 50#include <machine/cpu.h> 51#include <amiga/amiga/device.h> 52#include <amiga/amiga/custom.h> 53#include <amiga/amiga/cia.h> 54#include <amiga/dev/rtc.h> 55#include <amiga/dev/zbusvar.h> 56 57#include <dev/clock_subr.h> 58 59int a2kbbc_match __P((struct device *, struct cfdata *, void *)); 60void a2kbbc_attach __P((struct device *, struct device *, void *)); 61 62struct cfattach a2kbbc_ca = { 63 sizeof(struct device), a2kbbc_match, a2kbbc_attach 64}; 65 66void *a2kclockaddr; 67int a2kugettod __P((struct timeval *)); 68int a2kusettod __P((struct timeval *)); 69 70int 71a2kbbc_match(pdp, cfp, auxp) 72 struct device *pdp; 73 struct cfdata *cfp; 74 void *auxp; 75{ 76 if (!matchname("a2kbbc", auxp)) 77 return (0); 78 79 if (cfp->cf_unit != 0) 80 return (0); /* only one of us please */ 81 82 if (/* is_a1200() || */ is_a3000() || is_a4000() 83#ifdef DRACO 84 || is_draco() 85#endif 86 ) 87 return (0); 88 89 a2kclockaddr = (void *)ztwomap(0xdc0000); 90 if (a2kugettod(0) == 0) 91 return (0); 92 93 return (1); 94} 95 96/* 97 * Attach us to the rtc function pointers. 98 */ 99void 100a2kbbc_attach(pdp, dp, auxp) 101 struct device *pdp, *dp; 102 void *auxp; 103{ 104 printf("\n"); 105 a2kclockaddr = (void *)ztwomap(0xdc0000); 106 107 ugettod = a2kugettod; 108 usettod = a2kusettod; 109} 110 111int 112a2kugettod(tvp) 113 struct timeval *tvp; 114{ 115 struct rtclock2000 *rt; 116 struct clock_ymdhms dt; 117 time_t secs; 118 int i; 119 120 rt = a2kclockaddr; 121 122 /* 123 * hold clock 124 */ 125 rt->control1 |= A2CONTROL1_HOLD; 126 i = 0x1000; 127 while (rt->control1 & A2CONTROL1_BUSY && i--) 128 ; 129 if (rt->control1 & A2CONTROL1_BUSY) 130 return (0); /* Give up and say it's not there */ 131 132 /* Copy the info. Careful about the order! */ 133 dt.dt_sec = rt->second1 * 10 + rt->second2; 134 dt.dt_min = rt->minute1 * 10 + rt->minute2; 135 dt.dt_hour = (rt->hour1 & 3) * 10 + rt->hour2; 136 dt.dt_day = rt->day1 * 10 + rt->day2; 137 dt.dt_mon = rt->month1 * 10 + rt->month2; 138 dt.dt_year = rt->year1 * 10 + rt->year2; 139 dt.dt_wday = rt->weekday; 140 141 /* 142 * The oki clock chip has a register to put the clock into 143 * 12/24h mode. 144 * 145 * clockmode | A2HOUR1_PM 146 * 24h 12h | am = 0, pm = 1 147 * --------------------------------- 148 * 0 12 | 0 149 * 1 1 | 0 150 * .. .. | 0 151 * 11 11 | 0 152 * 12 12 | 1 153 * 13 1 | 1 154 * .. .. | 1 155 * 23 11 | 1 156 * 157 */ 158 159 if ((rt->control3 & A2CONTROL3_24HMODE) == 0) { 160 if ((rt->hour1 & A2HOUR1_PM) == 0 && dt.dt_hour == 12) 161 dt.dt_hour = 0; 162 else if ((rt->hour1 & A2HOUR1_PM) && dt.dt_hour != 12) 163 dt.dt_hour += 12; 164 } 165 166 /* 167 * release the clock 168 */ 169 rt->control1 &= ~A2CONTROL1_HOLD; 170 171 dt.dt_year += CLOCK_BASE_YEAR; 172 if (dt.dt_year < STARTOFTIME) 173 dt.dt_year += 100; 174 175 if ((dt.dt_hour > 23) || 176 (dt.dt_day > 31) || 177 (dt.dt_mon > 12) || 178 /* (dt.dt_year < STARTOFTIME) || */ (dt.dt_year > 2036)) 179 return (0); 180 181 secs = clock_ymdhms_to_secs(&dt); 182 if (tvp) { 183 tvp->tv_sec = secs; 184 tvp->tv_usec = 0; 185 } 186 return (1); 187} 188 189int 190a2kusettod(tvp) 191 struct timeval *tvp; 192{ 193 struct rtclock2000 *rt; 194 struct clock_ymdhms dt; 195 int ampm, i; 196 time_t secs; 197 198 secs = tvp->tv_sec; 199 rt = a2kclockaddr; 200 /* 201 * there seem to be problems with the bitfield addressing 202 * currently used.. 203 */ 204 if (! rt) 205 return (0); 206 207 clock_secs_to_ymdhms(secs, &dt); 208 dt.dt_year -= CLOCK_BASE_YEAR; 209 210 /* 211 * hold clock 212 */ 213 rt->control1 |= A2CONTROL1_HOLD; 214 i = 0x1000; 215 while (rt->control1 & A2CONTROL1_BUSY && i--) 216 ; 217 if (rt->control1 & A2CONTROL1_BUSY) 218 return (0); /* Give up and say it's not there */ 219 220 ampm = 0; 221 if ((rt->control3 & A2CONTROL3_24HMODE) == 0) { 222 if (dt.dt_hour >= 12) { 223 ampm = A2HOUR1_PM; 224 if (dt.dt_hour != 12) 225 dt.dt_hour -= 12; 226 } else if (dt.dt_hour == 0) { 227 dt.dt_hour = 12; 228 } 229 } 230 rt->hour1 = (dt.dt_hour / 10) | ampm; 231 rt->hour2 = dt.dt_hour % 10; 232 rt->second1 = dt.dt_sec / 10; 233 rt->second2 = dt.dt_sec % 10; 234 rt->minute1 = dt.dt_min / 10; 235 rt->minute2 = dt.dt_min % 10; 236 rt->day1 = dt.dt_day / 10; 237 rt->day2 = dt.dt_day % 10; 238 rt->month1 = dt.dt_mon / 10; 239 rt->month2 = dt.dt_mon % 10; 240 rt->year1 = dt.dt_year / 10; 241 rt->year2 = dt.dt_year % 10; 242 rt->weekday = dt.dt_wday; 243 244 /* 245 * release the clock 246 */ 247 rt->control2 &= ~A2CONTROL1_HOLD; 248 249 return (1); 250} 251