clock.c revision 1.2.2.2
1 1.2.2.2 gmcgarry /* $NetBSD: clock.c,v 1.2.2.2 2001/11/08 07:01:34 gmcgarry Exp $ */ 2 1.2.2.2 gmcgarry 3 1.2.2.2 gmcgarry /* 4 1.2.2.2 gmcgarry * Copyright (c) 1988 University of Utah. 5 1.2.2.2 gmcgarry * Copyright (c) 1982, 1990, 1993 6 1.2.2.2 gmcgarry * The Regents of the University of California. All rights reserved. 7 1.2.2.2 gmcgarry * 8 1.2.2.2 gmcgarry * This code is derived from software contributed to Berkeley by 9 1.2.2.2 gmcgarry * the Systems Programming Group of the University of Utah Computer 10 1.2.2.2 gmcgarry * Science Department. 11 1.2.2.2 gmcgarry * 12 1.2.2.2 gmcgarry * Redistribution and use in source and binary forms, with or without 13 1.2.2.2 gmcgarry * modification, are permitted provided that the following conditions 14 1.2.2.2 gmcgarry * are met: 15 1.2.2.2 gmcgarry * 1. Redistributions of source code must retain the above copyright 16 1.2.2.2 gmcgarry * notice, this list of conditions and the following disclaimer. 17 1.2.2.2 gmcgarry * 2. Redistributions in binary form must reproduce the above copyright 18 1.2.2.2 gmcgarry * notice, this list of conditions and the following disclaimer in the 19 1.2.2.2 gmcgarry * documentation and/or other materials provided with the distribution. 20 1.2.2.2 gmcgarry * 3. All advertising materials mentioning features or use of this software 21 1.2.2.2 gmcgarry * must display the following acknowledgement: 22 1.2.2.2 gmcgarry * This product includes software developed by the University of 23 1.2.2.2 gmcgarry * California, Berkeley and its contributors. 24 1.2.2.2 gmcgarry * 4. Neither the name of the University nor the names of its contributors 25 1.2.2.2 gmcgarry * may be used to endorse or promote products derived from this software 26 1.2.2.2 gmcgarry * without specific prior written permission. 27 1.2.2.2 gmcgarry * 28 1.2.2.2 gmcgarry * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 1.2.2.2 gmcgarry * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 1.2.2.2 gmcgarry * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 1.2.2.2 gmcgarry * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 1.2.2.2 gmcgarry * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 1.2.2.2 gmcgarry * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 1.2.2.2 gmcgarry * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 1.2.2.2 gmcgarry * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 1.2.2.2 gmcgarry * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 1.2.2.2 gmcgarry * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 1.2.2.2 gmcgarry * SUCH DAMAGE. 39 1.2.2.2 gmcgarry * 40 1.2.2.2 gmcgarry * from: Utah $Hdr: clock.c 1.18 91/01/21$ 41 1.2.2.2 gmcgarry * 42 1.2.2.2 gmcgarry * @(#)clock.c 8.2 (Berkeley) 1/12/94 43 1.2.2.2 gmcgarry */ 44 1.2.2.2 gmcgarry 45 1.2.2.2 gmcgarry #include <sys/param.h> 46 1.2.2.2 gmcgarry 47 1.2.2.2 gmcgarry #include <hp300/dev/hilreg.h> 48 1.2.2.2 gmcgarry 49 1.2.2.2 gmcgarry #define FEBRUARY 2 50 1.2.2.2 gmcgarry #define STARTOFTIME 1970 51 1.2.2.2 gmcgarry #define SECDAY 86400L 52 1.2.2.2 gmcgarry #define SECYR (SECDAY * 365) 53 1.2.2.2 gmcgarry 54 1.2.2.2 gmcgarry #define BBC_SET_REG 0xe0 55 1.2.2.2 gmcgarry #define BBC_WRITE_REG 0xc2 56 1.2.2.2 gmcgarry #define BBC_READ_REG 0xc3 57 1.2.2.2 gmcgarry #define NUM_BBC_REGS 12 58 1.2.2.2 gmcgarry 59 1.2.2.2 gmcgarry #define leapyear(year) ((year) % 4 == 0) 60 1.2.2.2 gmcgarry #define range_test(n, l, h) if ((n) < (l) || (n) > (h)) return(0) 61 1.2.2.2 gmcgarry #define days_in_year(a) (leapyear(a) ? 366 : 365) 62 1.2.2.2 gmcgarry #define days_in_month(a) (month_days[(a) - 1]) 63 1.2.2.2 gmcgarry #define bbc_to_decimal(a,b) (bbc_registers[a] * 10 + bbc_registers[b]) 64 1.2.2.2 gmcgarry 65 1.2.2.2 gmcgarry #include <hp300/stand/common/samachdep.h> 66 1.2.2.2 gmcgarry 67 1.2.2.2 gmcgarry static int month_days[12] = { 68 1.2.2.2 gmcgarry 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 69 1.2.2.2 gmcgarry }; 70 1.2.2.2 gmcgarry 71 1.2.2.2 gmcgarry u_char bbc_registers[13]; 72 1.2.2.2 gmcgarry u_char read_bbc_reg(); 73 1.2.2.2 gmcgarry struct hil_dev *bbcaddr = BBCADDR; 74 1.2.2.2 gmcgarry 75 1.2.2.2 gmcgarry getsecs() 76 1.2.2.2 gmcgarry { 77 1.2.2.2 gmcgarry static int bbcinited = 0; 78 1.2.2.2 gmcgarry u_long timbuf = 0; 79 1.2.2.2 gmcgarry 80 1.2.2.2 gmcgarry if (!bbc_to_gmt(&timbuf) && !bbcinited) 81 1.2.2.2 gmcgarry printf("WARNING: bad date in battery clock\n"); 82 1.2.2.2 gmcgarry bbcinited = 1; 83 1.2.2.2 gmcgarry 84 1.2.2.2 gmcgarry /* Battery clock does not store usec's, so forget about it. */ 85 1.2.2.2 gmcgarry return(timbuf); 86 1.2.2.2 gmcgarry } 87 1.2.2.2 gmcgarry 88 1.2.2.2 gmcgarry 89 1.2.2.2 gmcgarry bbc_to_gmt(timbuf) 90 1.2.2.2 gmcgarry u_long *timbuf; 91 1.2.2.2 gmcgarry { 92 1.2.2.2 gmcgarry register int i; 93 1.2.2.2 gmcgarry register u_long tmp; 94 1.2.2.2 gmcgarry int year, month, day, hour, min, sec; 95 1.2.2.2 gmcgarry 96 1.2.2.2 gmcgarry read_bbc(); 97 1.2.2.2 gmcgarry 98 1.2.2.2 gmcgarry sec = bbc_to_decimal(1, 0); 99 1.2.2.2 gmcgarry min = bbc_to_decimal(3, 2); 100 1.2.2.2 gmcgarry 101 1.2.2.2 gmcgarry /* 102 1.2.2.2 gmcgarry * Hours are different for some reason. Makes no sense really. 103 1.2.2.2 gmcgarry */ 104 1.2.2.2 gmcgarry hour = ((bbc_registers[5] & 0x03) * 10) + bbc_registers[4]; 105 1.2.2.2 gmcgarry day = bbc_to_decimal(8, 7); 106 1.2.2.2 gmcgarry month = bbc_to_decimal(10, 9); 107 1.2.2.2 gmcgarry year = bbc_to_decimal(12, 11) + 1900; 108 1.2.2.2 gmcgarry 109 1.2.2.2 gmcgarry range_test(hour, 0, 23); 110 1.2.2.2 gmcgarry range_test(day, 1, 31); 111 1.2.2.2 gmcgarry range_test(month, 1, 12); 112 1.2.2.2 gmcgarry range_test(year, STARTOFTIME, 2000); 113 1.2.2.2 gmcgarry 114 1.2.2.2 gmcgarry tmp = 0; 115 1.2.2.2 gmcgarry 116 1.2.2.2 gmcgarry for (i = STARTOFTIME; i < year; i++) 117 1.2.2.2 gmcgarry tmp += days_in_year(i); 118 1.2.2.2 gmcgarry if (leapyear(year) && month > FEBRUARY) 119 1.2.2.2 gmcgarry tmp++; 120 1.2.2.2 gmcgarry 121 1.2.2.2 gmcgarry for (i = 1; i < month; i++) 122 1.2.2.2 gmcgarry tmp += days_in_month(i); 123 1.2.2.2 gmcgarry 124 1.2.2.2 gmcgarry tmp += (day - 1); 125 1.2.2.2 gmcgarry tmp = ((tmp * 24 + hour) * 60 + min) * 60 + sec; 126 1.2.2.2 gmcgarry 127 1.2.2.2 gmcgarry *timbuf = tmp; 128 1.2.2.2 gmcgarry return(1); 129 1.2.2.2 gmcgarry } 130 1.2.2.2 gmcgarry 131 1.2.2.2 gmcgarry read_bbc() 132 1.2.2.2 gmcgarry { 133 1.2.2.2 gmcgarry register int i, read_okay; 134 1.2.2.2 gmcgarry 135 1.2.2.2 gmcgarry read_okay = 0; 136 1.2.2.2 gmcgarry while (!read_okay) { 137 1.2.2.2 gmcgarry read_okay = 1; 138 1.2.2.2 gmcgarry for (i = 0; i <= NUM_BBC_REGS; i++) 139 1.2.2.2 gmcgarry bbc_registers[i] = read_bbc_reg(i); 140 1.2.2.2 gmcgarry for (i = 0; i <= NUM_BBC_REGS; i++) 141 1.2.2.2 gmcgarry if (bbc_registers[i] != read_bbc_reg(i)) 142 1.2.2.2 gmcgarry read_okay = 0; 143 1.2.2.2 gmcgarry } 144 1.2.2.2 gmcgarry } 145 1.2.2.2 gmcgarry 146 1.2.2.2 gmcgarry u_char 147 1.2.2.2 gmcgarry read_bbc_reg(reg) 148 1.2.2.2 gmcgarry int reg; 149 1.2.2.2 gmcgarry { 150 1.2.2.2 gmcgarry u_char data = reg; 151 1.2.2.2 gmcgarry 152 1.2.2.2 gmcgarry if (bbcaddr) { 153 1.2.2.2 gmcgarry #if 0 154 1.2.2.2 gmcgarry send_hil_cmd(bbcaddr, BBC_SET_REG, &data, 1, NULL); 155 1.2.2.2 gmcgarry send_hil_cmd(bbcaddr, BBC_READ_REG, NULL, 0, &data); 156 1.2.2.2 gmcgarry #else 157 1.2.2.2 gmcgarry HILWAIT(bbcaddr); 158 1.2.2.2 gmcgarry bbcaddr->hil_cmd = BBC_SET_REG; 159 1.2.2.2 gmcgarry HILWAIT(bbcaddr); 160 1.2.2.2 gmcgarry bbcaddr->hil_data = data; 161 1.2.2.2 gmcgarry HILWAIT(bbcaddr); 162 1.2.2.2 gmcgarry bbcaddr->hil_cmd = BBC_READ_REG; 163 1.2.2.2 gmcgarry HILDATAWAIT(bbcaddr); 164 1.2.2.2 gmcgarry data = bbcaddr->hil_data; 165 1.2.2.2 gmcgarry #endif 166 1.2.2.2 gmcgarry } 167 1.2.2.2 gmcgarry return(data); 168 1.2.2.2 gmcgarry } 169
Indexes created Thu Oct 23 22:10:10 GMT 2025