clock.h revision 162962
1/*- 2 * Copyright (c) 1996 The NetBSD Foundation, Inc. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to The NetBSD Foundation 6 * by Gordon W. Ross 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the NetBSD 19 * Foundation, Inc. and its contributors. 20 * 4. Neither the name of The NetBSD Foundation nor the names of its 21 * contributors may be used to endorse or promote products derived 22 * from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 25 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 26 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34 * POSSIBILITY OF SUCH DAMAGE. 35 * 36 * $NetBSD: clock_subr.h,v 1.7 2000/10/03 13:41:07 tsutsui Exp $ 37 * 38 * $FreeBSD: head/sys/sys/clock.h 162962 2006-10-02 16:17:23Z phk $ 39 */ 40 41#ifndef _SYS_CLOCK_H_ 42#define _SYS_CLOCK_H_ 43 44#ifdef _KERNEL /* No user serviceable parts */ 45 46/* 47 * Kernel to clock driver interface. 48 */ 49void inittodr(time_t base); 50void resettodr(void); 51void startrtclock(void); 52extern int wall_cmos_clock; 53extern int adjkerntz; 54extern int disable_rtc_set; 55 56/* 57 * Timezone info from settimeofday(2), usually not used 58 */ 59extern int tz_minuteswest; 60extern int tz_dsttime; 61 62int utc_offset(void); 63 64/* 65 * Structure to hold the values typically reported by time-of-day clocks. 66 * This can be passed to the generic conversion functions to be converted 67 * to a struct timespec. 68 */ 69struct clocktime { 70 int year; /* year (4 digit year) */ 71 int mon; /* month (1 - 12) */ 72 int day; /* day (1 - 31) */ 73 int hour; /* hour (0 - 23) */ 74 int min; /* minute (0 - 59) */ 75 int sec; /* second (0 - 59) */ 76 int dow; /* day of week (0 - 6; 0 = Sunday) */ 77 long nsec; /* nano seconds */ 78}; 79 80int clock_ct_to_ts(struct clocktime *, struct timespec *); 81void clock_ts_to_ct(struct timespec *, struct clocktime *); 82void clock_register(device_t, long); 83 84/* 85 * BCD to decimal and decimal to BCD. 86 */ 87#define FROMBCD(x) bcd2bin(x) 88#define TOBCD(x) bin2bcd(x) 89 90/* Some handy constants. */ 91#define SECDAY (24 * 60 * 60) 92#define SECYR (SECDAY * 365) 93 94/* Traditional POSIX base year */ 95#define POSIX_BASE_YEAR 1970 96 97#endif /* _KERNEL */ 98 99#endif /* !_SYS_CLOCK_H_ */ 100