80 lines
3.1 KiB
C
80 lines
3.1 KiB
C
/* $NetBSD: rtc.h,v 1.10 2012/11/14 13:36:02 rkujawa Exp $ */
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/*
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* Copyright (c) 1994 Christian E. Hopps
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christian E. Hopps.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* information on A3000 clock from Holger Emden.
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*/
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#ifndef _RTCVAR_H_
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#define _RTCVAR_H_
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/* this is a hook set by a clock driver for the configured realtime clock,
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returning plain current unix-time */
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extern int (*ugettod)(struct timeval *);
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extern int (*usettod)(struct timeval *);
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struct rtclock3000 {
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u_int :28, second2:4; /* 0x03 lower digit */
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u_int :28, second1:4; /* 0x07 upper digit */
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u_int :28, minute2:4; /* 0x0b lower digit */
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u_int :28, minute1:4; /* 0x0f upper digit */
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u_int :28, hour2:4; /* 0x13 lower digit */
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u_int :28, hour1:4; /* 0x17 upper digit */
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u_int :28, weekday:4; /* 0x1b */
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u_int :28, day2:4; /* 0x1f lower digit */
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u_int :28, day1:4; /* 0x23 upper digit */
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u_int :28, month2:4; /* 0x27 lower digit */
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u_int :28, month1:4; /* 0x2b upper digit */
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u_int :28, year2:4; /* 0x2f lower digit */
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u_int :28, year1:4; /* 0x33 upper digit */
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u_int :28, control1:4; /* 0x37 control-byte 1 */
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u_int :28, control2:4; /* 0x3b control-byte 2 */
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u_int :28, control3:4; /* 0x3f control-byte 3 */
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};
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#define A3CONTROL1_HOLD_CLOCK 0
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#define A3CONTROL1_FREE_CLOCK 9
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/* mode1 registers used by us */
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#define leapyear year2
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#define A3BBC_SET_REG 0xe0
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#define A3BBC_WRITE_REG 0xc2
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#define A3BBC_READ_REG 0xc3
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#define A3NUM_BBC_REGS 12
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/*
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* Our clock starts at 1/1/1970, but counts the years from 1900.
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*/
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#define STARTOFTIME 1970
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#define CLOCK_BASE_YEAR 1900
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#endif /* _RTCVAR_H_ */
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