a2kbbc.c revision 1.5
1/* $NetBSD: a2kbbc.c,v 1.5 1998/01/12 10:39:04 thorpej 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; 67time_t a2gettod __P((void)); 68int a2settod __P((time_t)); 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 (a2gettod() == 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 gettod = a2gettod; 108 settod = a2settod; 109} 110 111time_t 112a2gettod() 113{ 114 struct rtclock2000 *rt; 115 struct clock_ymdhms dt; 116 time_t secs; 117 int i; 118 119 rt = a2kclockaddr; 120 121 /* 122 * hold clock 123 */ 124 rt->control1 |= A2CONTROL1_HOLD; 125 i = 0x1000; 126 while (rt->control1 & A2CONTROL1_BUSY && i--) 127 ; 128 if (rt->control1 & A2CONTROL1_BUSY) 129 return (0); /* Give up and say it's not there */ 130 131 /* Copy the info. Careful about the order! */ 132 dt.dt_sec = rt->second1 * 10 + rt->second2; 133 dt.dt_min = rt->minute1 * 10 + rt->minute2; 134 dt.dt_hour = (rt->hour1 & 3) * 10 + rt->hour2; 135 dt.dt_day = rt->day1 * 10 + rt->day2; 136 dt.dt_mon = rt->month1 * 10 + rt->month2; 137 dt.dt_year = rt->year1 * 10 + rt->year2; 138 dt.dt_wday = rt->weekday; 139 140 /* 141 * The oki clock chip has a register to put the clock into 142 * 12/24h mode. 143 * 144 * clockmode | A2HOUR1_PM 145 * 24h 12h | am = 0, pm = 1 146 * --------------------------------- 147 * 0 12 | 0 148 * 1 1 | 0 149 * .. .. | 0 150 * 11 11 | 0 151 * 12 12 | 1 152 * 13 1 | 1 153 * .. .. | 1 154 * 23 11 | 1 155 * 156 */ 157 158 if ((rt->control3 & A2CONTROL3_24HMODE) == 0) { 159 if ((rt->hour1 & A2HOUR1_PM) == 0 && dt.dt_hour == 12) 160 dt.dt_hour = 0; 161 else if ((rt->hour1 & A2HOUR1_PM) && dt.dt_hour != 12) 162 dt.dt_hour += 12; 163 } 164 165 /* 166 * release the clock 167 */ 168 rt->control1 &= ~A2CONTROL1_HOLD; 169 170 dt.dt_year += CLOCK_BASE_YEAR; 171 172 if ((dt.dt_hour > 23) || 173 (dt.dt_day > 31) || 174 (dt.dt_mon > 12) || 175 (dt.dt_year < STARTOFTIME) || (dt.dt_year > 2036)) 176 return (0); 177 178 secs = clock_ymdhms_to_secs(&dt); 179 return (secs); 180} 181 182int 183a2settod(secs) 184 time_t secs; 185{ 186 struct rtclock2000 *rt; 187 struct clock_ymdhms dt; 188 int ampm, i; 189 190 rt = a2kclockaddr; 191 /* 192 * there seem to be problems with the bitfield addressing 193 * currently used.. 194 */ 195 if (! rt) 196 return (0); 197 198 clock_secs_to_ymdhms(secs, &dt); 199 dt.dt_year -= CLOCK_BASE_YEAR; 200 201 /* 202 * hold clock 203 */ 204 rt->control1 |= A2CONTROL1_HOLD; 205 i = 0x1000; 206 while (rt->control1 & A2CONTROL1_BUSY && i--) 207 ; 208 if (rt->control1 & A2CONTROL1_BUSY) 209 return (0); /* Give up and say it's not there */ 210 211 ampm = 0; 212 if ((rt->control3 & A2CONTROL3_24HMODE) == 0) { 213 if (dt.dt_hour >= 12) { 214 ampm = A2HOUR1_PM; 215 if (dt.dt_hour != 12) 216 dt.dt_hour -= 12; 217 } else if (dt.dt_hour == 0) { 218 dt.dt_hour = 12; 219 } 220 } 221 rt->hour1 = (dt.dt_hour / 10) | ampm; 222 rt->hour2 = dt.dt_hour % 10; 223 rt->second1 = dt.dt_sec / 10; 224 rt->second2 = dt.dt_sec % 10; 225 rt->minute1 = dt.dt_min / 10; 226 rt->minute2 = dt.dt_min % 10; 227 rt->day1 = dt.dt_day / 10; 228 rt->day2 = dt.dt_day % 10; 229 rt->month1 = dt.dt_mon / 10; 230 rt->month2 = dt.dt_mon % 10; 231 rt->year1 = dt.dt_year / 10; 232 rt->year2 = dt.dt_year % 10; 233 rt->weekday = dt.dt_wday; 234 235 /* 236 * release the clock 237 */ 238 rt->control2 &= ~A2CONTROL1_HOLD; 239 240 return (1); 241} 242