1 /* $NetBSD: rtc.h,v 1.10 2012/11/14 13:36:02 rkujawa Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Christian E. Hopps 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Christian E. Hopps. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 * 32 * information on A3000 clock from Holger Emden. 33 */ 34 #ifndef _RTCVAR_H_ 35 #define _RTCVAR_H_ 36 37 /* this is a hook set by a clock driver for the configured realtime clock, 38 returning plain current unix-time */ 39 40 extern int (*ugettod)(struct timeval *); 41 extern int (*usettod)(struct timeval *); 42 43 struct rtclock3000 { 44 u_int :28, second2:4; /* 0x03 lower digit */ 45 u_int :28, second1:4; /* 0x07 upper digit */ 46 u_int :28, minute2:4; /* 0x0b lower digit */ 47 u_int :28, minute1:4; /* 0x0f upper digit */ 48 u_int :28, hour2:4; /* 0x13 lower digit */ 49 u_int :28, hour1:4; /* 0x17 upper digit */ 50 u_int :28, weekday:4; /* 0x1b */ 51 u_int :28, day2:4; /* 0x1f lower digit */ 52 u_int :28, day1:4; /* 0x23 upper digit */ 53 u_int :28, month2:4; /* 0x27 lower digit */ 54 u_int :28, month1:4; /* 0x2b upper digit */ 55 u_int :28, year2:4; /* 0x2f lower digit */ 56 u_int :28, year1:4; /* 0x33 upper digit */ 57 u_int :28, control1:4; /* 0x37 control-byte 1 */ 58 u_int :28, control2:4; /* 0x3b control-byte 2 */ 59 u_int :28, control3:4; /* 0x3f control-byte 3 */ 60 }; 61 62 #define A3CONTROL1_HOLD_CLOCK 0 63 #define A3CONTROL1_FREE_CLOCK 9 64 65 /* mode1 registers used by us */ 66 #define leapyear year2 67 68 #define A3BBC_SET_REG 0xe0 69 #define A3BBC_WRITE_REG 0xc2 70 #define A3BBC_READ_REG 0xc3 71 #define A3NUM_BBC_REGS 12 72 73 /* 74 * Our clock starts at 1/1/1970, but counts the years from 1900. 75 */ 76 #define STARTOFTIME 1970 77 #define CLOCK_BASE_YEAR 1900 78 79 #endif /* _RTCVAR_H_ */ 80