1/* $NetBSD: a34kbbc.c,v 1.21 2011/02/08 20:20:08 rmind 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. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: Utah $Hdr: clock.c 1.18 91/01/21$ 37 * 38 * @(#)clock.c 7.6 (Berkeley) 5/7/91 39 */ 40 41#include <sys/cdefs.h> 42__KERNEL_RCSID(0, "$NetBSD: a34kbbc.c,v 1.21 2011/02/08 20:20:08 rmind Exp $"); 43 44#include <sys/param.h> 45#include <sys/kernel.h> 46#include <sys/device.h> 47#include <sys/systm.h> 48#include <machine/psl.h> 49#include <machine/cpu.h> 50#include <amiga/amiga/device.h> 51#include <amiga/amiga/custom.h> 52#include <amiga/amiga/cia.h> 53#include <amiga/dev/rtc.h> 54#include <amiga/dev/zbusvar.h> 55 56#include <dev/clock_subr.h> 57 58int a34kbbc_match(device_t, cfdata_t, void *); 59void a34kbbc_attach(device_t, device_t, void *); 60 61CFATTACH_DECL_NEW(a34kbbc, 0, 62 a34kbbc_match, a34kbbc_attach, NULL, NULL); 63 64void *a34kclockaddr; 65int a34kugettod(todr_chip_handle_t, struct clock_ymdhms *); 66int a34kusettod(todr_chip_handle_t, struct clock_ymdhms *); 67static struct todr_chip_handle a34ktodr; 68 69int 70a34kbbc_match(device_t pdp, cfdata_t cfp, void *auxp) 71{ 72 struct clock_ymdhms dt; 73 static int a34kbbc_matched = 0; 74 75 if (!matchname("a34kbbc", auxp)) 76 return(0); 77 78 /* Allow only one instance. */ 79 if (a34kbbc_matched) 80 return(0); 81 82 if (!(is_a3000() || is_a4000())) 83 return(0); 84 85 a34kclockaddr = (void *)__UNVOLATILE(ztwomap(0xdc0000)); 86 if (a34kugettod(&a34ktodr, &dt) != 0) 87 return(0); 88 89 a34kbbc_matched = 1; 90 return(1); 91} 92 93/* 94 * Attach us to the rtc function pointers. 95 */ 96void 97a34kbbc_attach(device_t pdp, device_t dp, void *auxp) 98{ 99 printf("\n"); 100 a34kclockaddr = (void *)__UNVOLATILE(ztwomap(0xdc0000)); 101 102 a34ktodr.cookie = a34kclockaddr; 103 a34ktodr.todr_gettime_ymdhms = a34kugettod; 104 a34ktodr.todr_settime_ymdhms = a34kusettod; 105 todr_attach(&a34ktodr); 106} 107 108int 109a34kugettod(todr_chip_handle_t h, struct clock_ymdhms *dt) 110{ 111 struct rtclock3000 *rt; 112 113 rt = a34kclockaddr; 114 115 /* hold clock */ 116 rt->control1 = A3CONTROL1_HOLD_CLOCK; 117 118 /* Copy the info. Careful about the order! */ 119 dt->dt_sec = rt->second1 * 10 + rt->second2; 120 dt->dt_min = rt->minute1 * 10 + rt->minute2; 121 dt->dt_hour = rt->hour1 * 10 + rt->hour2; 122 dt->dt_wday = rt->weekday; 123 dt->dt_day = rt->day1 * 10 + rt->day2; 124 dt->dt_mon = rt->month1 * 10 + rt->month2; 125 dt->dt_year = rt->year1 * 10 + rt->year2; 126 127 dt->dt_year += CLOCK_BASE_YEAR; 128 /* let it run again.. */ 129 rt->control1 = A3CONTROL1_FREE_CLOCK; 130 131 if (dt->dt_year < STARTOFTIME) 132 dt->dt_year += 100; 133 134 135 /* 136 * These checks are mostly redundant against those already in the 137 * generic todr, but apparently the attach code checks against the 138 * return value of this function, so we have to include a check here, 139 * too. 140 */ 141 if ((dt->dt_hour > 23) || 142 (dt->dt_wday > 6) || 143 (dt->dt_day > 31) || 144 (dt->dt_mon > 12) || 145 /* (dt.dt_year < STARTOFTIME) || */ (dt->dt_year > 2036)) 146 return (EINVAL); 147 148 return (0); 149} 150 151int 152a34kusettod(todr_chip_handle_t h, struct clock_ymdhms *dt) 153{ 154 struct rtclock3000 *rt; 155 156 rt = a34kclockaddr; 157 /* 158 * there seem to be problems with the bitfield addressing 159 * currently used.. 160 */ 161 162 if (! rt) 163 return (ENXIO); 164 165 rt->control1 = A3CONTROL1_HOLD_CLOCK; /* implies mode 0 */ 166 rt->second1 = dt->dt_sec / 10; 167 rt->second2 = dt->dt_sec % 10; 168 rt->minute1 = dt->dt_min / 10; 169 rt->minute2 = dt->dt_min % 10; 170 rt->hour1 = dt->dt_hour / 10; 171 rt->hour2 = dt->dt_hour % 10; 172 rt->weekday = dt->dt_wday; 173 rt->day1 = dt->dt_day / 10; 174 rt->day2 = dt->dt_day % 10; 175 rt->month1 = dt->dt_mon / 10; 176 rt->month2 = dt->dt_mon % 10; 177 rt->year1 = (dt->dt_year / 10) % 10; 178 rt->year2 = dt->dt_year % 10; 179 rt->control1 = A3CONTROL1_HOLD_CLOCK | 1; /* mode 1 registers */ 180 rt->leapyear = dt->dt_year; /* XXX implicit % 4 */ 181 rt->control1 = A3CONTROL1_FREE_CLOCK; /* implies mode 1 */ 182 183 return (0); 184} 185