1 /* $OpenBSD: clock_subr.h,v 1.3 2002/03/14 01:26:52 millert Exp $ */ 2 /* $NetBSD: clock_subr.h,v 1.2 1997/03/15 18:11:17 is Exp $ */ 3 4 /*- 5 * Copyright (c) 1996 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Gordon W. Ross 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. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * "POSIX time" to/from "YY/MM/DD/hh/mm/ss" 42 */ 43 struct clock_ymdhms { 44 u_short dt_year; 45 u_char dt_mon; 46 u_char dt_day; 47 u_char dt_wday; /* Day of week */ 48 u_char dt_hour; 49 u_char dt_min; 50 u_char dt_sec; 51 }; 52 53 time_t clock_ymdhms_to_secs(struct clock_ymdhms *); 54 void clock_secs_to_ymdhms(time_t, struct clock_ymdhms *); 55 56 /* 57 * BCD to decimal and decimal to BCD. 58 */ 59 #define FROMBCD(x) (((x) >> 4) * 10 + ((x) & 0xf)) 60 #define TOBCD(x) (((x) / 10 * 16) + ((x) % 10)) 61 62 /* Some handy constants. */ 63 #define SECDAY 86400L 64 #define SECYR (SECDAY * 365) 65 66 /* Traditional POSIX base year */ 67 #define POSIX_BASE_YEAR 1970 68 69 /* 70 * Interface to time-of-day clock devices. 71 * 72 * todr_gettime: convert time-of-day clock into a `struct timeval' 73 * todr_settime: set time-of-day clock from a `struct timeval' 74 * todr_getcal: get current TOD clock calibration value in ppm 75 * todr_setcal: set calibration value in ppm in TOD clock 76 * 77 * (this is probably not so useful:) 78 * todr_setwen: provide a machine-dependent TOD clock write-enable callback 79 * function which takes one boolean argument: 80 * 1 to enable writes; 0 to disable writes. 81 */ 82 struct todr_chip_handle { 83 void *cookie; /* Device specific data */ 84 void *bus_cookie; /* Bus specific data */ 85 86 int (*todr_gettime)(struct todr_chip_handle *, struct timeval *); 87 int (*todr_settime)(struct todr_chip_handle *, struct timeval *); 88 int (*todr_getcal)(struct todr_chip_handle *, int *); 89 int (*todr_setcal)(struct todr_chip_handle *, int); 90 int (*todr_setwen)(struct todr_chip_handle *, int); 91 }; 92 typedef struct todr_chip_handle *todr_chip_handle_t; 93 94 #define todr_gettime(ct, t) ((*(ct)->todr_gettime)(ct, t)) 95 #define todr_settime(ct, t) ((*(ct)->todr_settime)(ct, t)) 96 #define todr_getcal(ct, vp) ((*(ct)->todr_gettime)(ct, vp)) 97 #define todr_setcal(ct, v) ((*(ct)->todr_settime)(ct, v)) 98 #define todr_wenable(ct, v) if ((ct)->todr_setwen) \ 99 ((*(ct)->todr_setwen)(ct, v)) 100 101