a2kbbc.c revision 1.13
1/* $NetBSD: a2kbbc.c,v 1.13 2002/09/27 20:29:43 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/cdefs.h> 46__KERNEL_RCSID(0, "$NetBSD: a2kbbc.c,v 1.13 2002/09/27 20:29:43 thorpej Exp $"); 47 48#include <sys/param.h> 49#include <sys/kernel.h> 50#include <sys/device.h> 51#include <sys/systm.h> 52#include <machine/psl.h> 53#include <machine/cpu.h> 54#include <amiga/amiga/device.h> 55#include <amiga/amiga/custom.h> 56#include <amiga/amiga/cia.h> 57#include <amiga/dev/rtc.h> 58#include <amiga/dev/zbusvar.h> 59 60#include <dev/clock_subr.h> 61 62int a2kbbc_match(struct device *, struct cfdata *, void *); 63void a2kbbc_attach(struct device *, struct device *, void *); 64 65const struct cfattach a2kbbc_ca = { 66 sizeof(struct device), a2kbbc_match, a2kbbc_attach 67}; 68 69void *a2kclockaddr; 70int a2kugettod(struct timeval *); 71int a2kusettod(struct timeval *); 72 73int 74a2kbbc_match(struct device *pdp, struct cfdata *cfp, void *auxp) 75{ 76 static int a2kbbc_matched = 0; 77 78 if (!matchname("a2kbbc", auxp)) 79 return (0); 80 81 /* Allow only one instance. */ 82 if (a2kbbc_matched) 83 return (0); 84 85 if (/* is_a1200() || */ is_a3000() || is_a4000() 86#ifdef DRACO 87 || is_draco() 88#endif 89 ) 90 return (0); 91 92 a2kclockaddr = (void *)ztwomap(0xdc0000); 93 if (a2kugettod(0) == 0) 94 return (0); 95 96 a2kbbc_matched = 1; 97 return (1); 98} 99 100/* 101 * Attach us to the rtc function pointers. 102 */ 103void 104a2kbbc_attach(struct device *pdp, struct device *dp, void *auxp) 105{ 106 printf("\n"); 107 a2kclockaddr = (void *)ztwomap(0xdc0000); 108 109 ugettod = a2kugettod; 110 usettod = a2kusettod; 111} 112 113int 114a2kugettod(struct timeval *tvp) 115{ 116 struct rtclock2000 *rt; 117 struct clock_ymdhms dt; 118 time_t secs; 119 int i; 120 121 rt = a2kclockaddr; 122 123 /* 124 * hold clock 125 */ 126 rt->control1 |= A2CONTROL1_HOLD; 127 i = 0x1000; 128 while (rt->control1 & A2CONTROL1_BUSY && i--) 129 ; 130 if (rt->control1 & A2CONTROL1_BUSY) 131 return (0); /* Give up and say it's not there */ 132 133 /* Copy the info. Careful about the order! */ 134 dt.dt_sec = rt->second1 * 10 + rt->second2; 135 dt.dt_min = rt->minute1 * 10 + rt->minute2; 136 dt.dt_hour = (rt->hour1 & 3) * 10 + rt->hour2; 137 dt.dt_day = rt->day1 * 10 + rt->day2; 138 dt.dt_mon = rt->month1 * 10 + rt->month2; 139 dt.dt_year = rt->year1 * 10 + rt->year2; 140 dt.dt_wday = rt->weekday; 141 142 /* 143 * The oki clock chip has a register to put the clock into 144 * 12/24h mode. 145 * 146 * clockmode | A2HOUR1_PM 147 * 24h 12h | am = 0, pm = 1 148 * --------------------------------- 149 * 0 12 | 0 150 * 1 1 | 0 151 * .. .. | 0 152 * 11 11 | 0 153 * 12 12 | 1 154 * 13 1 | 1 155 * .. .. | 1 156 * 23 11 | 1 157 * 158 */ 159 160 if ((rt->control3 & A2CONTROL3_24HMODE) == 0) { 161 if ((rt->hour1 & A2HOUR1_PM) == 0 && dt.dt_hour == 12) 162 dt.dt_hour = 0; 163 else if ((rt->hour1 & A2HOUR1_PM) && dt.dt_hour != 12) 164 dt.dt_hour += 12; 165 } 166 167 /* 168 * release the clock 169 */ 170 rt->control1 &= ~A2CONTROL1_HOLD; 171 172 dt.dt_year += CLOCK_BASE_YEAR; 173 if (dt.dt_year < STARTOFTIME) 174 dt.dt_year += 100; 175 176 if ((dt.dt_hour > 23) || 177 (dt.dt_day > 31) || 178 (dt.dt_mon > 12) || 179 /* (dt.dt_year < STARTOFTIME) || */ (dt.dt_year > 2036)) 180 return (0); 181 182 secs = clock_ymdhms_to_secs(&dt); 183 if (tvp) { 184 tvp->tv_sec = secs; 185 tvp->tv_usec = 0; 186 } 187 return (1); 188} 189 190int 191a2kusettod(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); 208 209 /* 210 * hold clock 211 */ 212 rt->control1 |= A2CONTROL1_HOLD; 213 i = 0x1000; 214 while (rt->control1 & A2CONTROL1_BUSY && i--) 215 ; 216 if (rt->control1 & A2CONTROL1_BUSY) 217 return (0); /* Give up and say it's not there */ 218 219 ampm = 0; 220 if ((rt->control3 & A2CONTROL3_24HMODE) == 0) { 221 if (dt.dt_hour >= 12) { 222 ampm = A2HOUR1_PM; 223 if (dt.dt_hour != 12) 224 dt.dt_hour -= 12; 225 } else if (dt.dt_hour == 0) { 226 dt.dt_hour = 12; 227 } 228 } 229 rt->hour1 = (dt.dt_hour / 10) | ampm; 230 rt->hour2 = dt.dt_hour % 10; 231 rt->second1 = dt.dt_sec / 10; 232 rt->second2 = dt.dt_sec % 10; 233 rt->minute1 = dt.dt_min / 10; 234 rt->minute2 = dt.dt_min % 10; 235 rt->day1 = dt.dt_day / 10; 236 rt->day2 = dt.dt_day % 10; 237 rt->month1 = dt.dt_mon / 10; 238 rt->month2 = dt.dt_mon % 10; 239 rt->year1 = (dt.dt_year / 10) % 10; 240 rt->year2 = dt.dt_year % 10; 241 rt->weekday = dt.dt_wday; 242 243 /* 244 * release the clock 245 */ 246 rt->control2 &= ~A2CONTROL1_HOLD; 247 248 return (1); 249} 250