a2kbbc.c revision 1.21
1/* $NetBSD: a2kbbc.c,v 1.21 2006/10/10 17:24:23 mhitch 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 1.21 2006/10/10 17:24:23 mhitch 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(todr_chip_handle_t, struct clock_ymdhms *); 105int a2kusettod(todr_chip_handle_t, struct clock_ymdhms *); 106static struct todr_chip_handle a2ktodr; 107 108int 109a2kbbc_match(struct device *pdp, struct cfdata *cfp, void *auxp) 110{ 111 struct clock_ymdhms dt; 112 static int a2kbbc_matched = 0; 113 114 if (!matchname("a2kbbc", auxp)) 115 return (0); 116 117 /* Allow only one instance. */ 118 if (a2kbbc_matched) 119 return (0); 120 121 if (/* is_a1200() || */ is_a3000() || is_a4000() 122#ifdef DRACO 123 || is_draco() 124#endif 125 ) 126 return (0); 127 128 a2kclockaddr = (void *)__UNVOLATILE(ztwomap(0xdc0000)); 129 if (a2kugettod(&a2ktodr, &dt) != 0) 130 return (0); 131 132 a2kbbc_matched = 1; 133 return (1); 134} 135 136/* 137 * Attach us to the rtc function pointers. 138 */ 139void 140a2kbbc_attach(struct device *pdp, struct device *dp, void *auxp) 141{ 142 printf("\n"); 143 a2kclockaddr = (void *)__UNVOLATILE(ztwomap(0xdc0000)); 144 145 a2ktodr.cookie = a2kclockaddr; 146 a2ktodr.todr_gettime_ymdhms = a2kugettod; 147 a2ktodr.todr_settime_ymdhms = a2kusettod; 148 todr_attach(&a2ktodr); 149} 150 151int 152a2kugettod(todr_chip_handle_t h, struct clock_ymdhms *dt) 153{ 154 struct rtclock2000 *rt; 155 int i; 156 157 rt = a2kclockaddr; 158 159 /* 160 * hold clock 161 */ 162 rt->control1 |= A2CONTROL1_HOLD; 163 i = 0x1000; 164 while (rt->control1 & A2CONTROL1_BUSY && i--) 165 ; 166 if (rt->control1 & A2CONTROL1_BUSY) 167 return (ENXIO); /* Give up and say it's not there */ 168 169 /* Copy the info. Careful about the order! */ 170 dt->dt_sec = rt->second1 * 10 + rt->second2; 171 dt->dt_min = rt->minute1 * 10 + rt->minute2; 172 dt->dt_hour = (rt->hour1 & 3) * 10 + rt->hour2; 173 dt->dt_day = rt->day1 * 10 + rt->day2; 174 dt->dt_mon = rt->month1 * 10 + rt->month2; 175 dt->dt_year = rt->year1 * 10 + rt->year2; 176 dt->dt_wday = rt->weekday; 177 178 /* 179 * The oki clock chip has a register to put the clock into 180 * 12/24h mode. 181 * 182 * clockmode | A2HOUR1_PM 183 * 24h 12h | am = 0, pm = 1 184 * --------------------------------- 185 * 0 12 | 0 186 * 1 1 | 0 187 * .. .. | 0 188 * 11 11 | 0 189 * 12 12 | 1 190 * 13 1 | 1 191 * .. .. | 1 192 * 23 11 | 1 193 * 194 */ 195 196 if ((rt->control3 & A2CONTROL3_24HMODE) == 0) { 197 if ((rt->hour1 & A2HOUR1_PM) == 0 && dt->dt_hour == 12) 198 dt->dt_hour = 0; 199 else if ((rt->hour1 & A2HOUR1_PM) && dt->dt_hour != 12) 200 dt->dt_hour += 12; 201 } 202 203 /* 204 * release the clock 205 */ 206 rt->control1 &= ~A2CONTROL1_HOLD; 207 208 dt->dt_year += CLOCK_BASE_YEAR; 209 if (dt->dt_year < STARTOFTIME) 210 dt->dt_year += 100; 211 212 /* 213 * Note that this check is redundant with one in kern_todr.c, but 214 * attach relies on it being here. 215 */ 216 if ((dt->dt_hour > 23) || 217 (dt->dt_day > 31) || 218 (dt->dt_mon > 12) || 219 /* (dt->dt_year < STARTOFTIME) || */ (dt->dt_year > 2036)) 220 return (EINVAL); 221 222 return (0); 223} 224 225int 226a2kusettod(todr_chip_handle_t h, struct clock_ymdhms *dt) 227{ 228 struct rtclock2000 *rt; 229 int ampm, i; 230 231 rt = a2kclockaddr; 232 /* 233 * there seem to be problems with the bitfield addressing 234 * currently used.. 235 */ 236 if (! rt) 237 return (ENXIO); 238 239 /* 240 * hold clock 241 */ 242 rt->control1 |= A2CONTROL1_HOLD; 243 i = 0x1000; 244 while (rt->control1 & A2CONTROL1_BUSY && i--) 245 ; 246 if (rt->control1 & A2CONTROL1_BUSY) 247 return (ENXIO); /* Give up and say it's not there */ 248 249 ampm = 0; 250 if ((rt->control3 & A2CONTROL3_24HMODE) == 0) { 251 if (dt->dt_hour >= 12) { 252 ampm = A2HOUR1_PM; 253 if (dt->dt_hour != 12) 254 dt->dt_hour -= 12; 255 } else if (dt->dt_hour == 0) { 256 dt->dt_hour = 12; 257 } 258 } 259 rt->hour1 = (dt->dt_hour / 10) | ampm; 260 rt->hour2 = dt->dt_hour % 10; 261 rt->second1 = dt->dt_sec / 10; 262 rt->second2 = dt->dt_sec % 10; 263 rt->minute1 = dt->dt_min / 10; 264 rt->minute2 = dt->dt_min % 10; 265 rt->day1 = dt->dt_day / 10; 266 rt->day2 = dt->dt_day % 10; 267 rt->month1 = dt->dt_mon / 10; 268 rt->month2 = dt->dt_mon % 10; 269 rt->year1 = (dt->dt_year / 10) % 10; 270 rt->year2 = dt->dt_year % 10; 271 rt->weekday = dt->dt_wday; 272 273 /* 274 * release the clock 275 */ 276 rt->control2 &= ~A2CONTROL1_HOLD; 277 278 return (0); 279} 280