1/* $NetBSD: rtc.h,v 1.8 2002/01/26 13:40:59 aymeric 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 A2000 clock from Harald Backert. 33 * information on A3000 clock from Holger Emden. 34 */ 35#ifndef _RTCVAR_H_ 36#define _RTCVAR_H_ 37 38/* this is a hook set by a clock driver for the configured realtime clock, 39 returning plain current unix-time */ 40 41extern int (*ugettod)(struct timeval *); 42extern int (*usettod)(struct timeval *); 43 44struct rtclock2000 { 45 u_int :28, second2:4; /* lower digit */ 46 u_int :28, second1:4; /* upper digit */ 47 u_int :28, minute2:4; /* lower digit */ 48 u_int :28, minute1:4; /* upper digit */ 49 u_int :28, hour2:4; /* lower digit */ 50 u_int :28, hour1:4; /* upper digit */ 51 u_int :28, day2:4; /* lower digit */ 52 u_int :28, day1:4; /* upper digit */ 53 u_int :28, month2:4; /* lower digit */ 54 u_int :28, month1:4; /* upper digit */ 55 u_int :28, year2:4; /* lower digit */ 56 u_int :28, year1:4; /* upper digit */ 57 u_int :28, weekday:4; /* weekday */ 58 u_int :28, control1:4; /* control-byte 1 */ 59 u_int :28, control2:4; /* control-byte 2 */ 60 u_int :28, control3:4; /* control-byte 3 */ 61}; 62 63/* 64 * commands written to control1, HOLD before reading the clock, 65 * FREE after done reading. 66 */ 67 68#define A2CONTROL1_HOLD (1<<0) 69#define A2CONTROL1_BUSY (1<<1) 70#define A2CONTROL3_24HMODE (1<<2) 71#define A2HOUR1_PM (1<<2) 72 73struct rtclock3000 { 74 u_int :28, second2:4; /* 0x03 lower digit */ 75 u_int :28, second1:4; /* 0x07 upper digit */ 76 u_int :28, minute2:4; /* 0x0b lower digit */ 77 u_int :28, minute1:4; /* 0x0f upper digit */ 78 u_int :28, hour2:4; /* 0x13 lower digit */ 79 u_int :28, hour1:4; /* 0x17 upper digit */ 80 u_int :28, weekday:4; /* 0x1b */ 81 u_int :28, day2:4; /* 0x1f lower digit */ 82 u_int :28, day1:4; /* 0x23 upper digit */ 83 u_int :28, month2:4; /* 0x27 lower digit */ 84 u_int :28, month1:4; /* 0x2b upper digit */ 85 u_int :28, year2:4; /* 0x2f lower digit */ 86 u_int :28, year1:4; /* 0x33 upper digit */ 87 u_int :28, control1:4; /* 0x37 control-byte 1 */ 88 u_int :28, control2:4; /* 0x3b control-byte 2 */ 89 u_int :28, control3:4; /* 0x3f control-byte 3 */ 90}; 91 92#define A3CONTROL1_HOLD_CLOCK 0 93#define A3CONTROL1_FREE_CLOCK 9 94 95/* mode1 registers used by us */ 96#define leapyear year2 97 98#define A3BBC_SET_REG 0xe0 99#define A3BBC_WRITE_REG 0xc2 100#define A3BBC_READ_REG 0xc3 101#define A3NUM_BBC_REGS 12 102 103/* 104 * Our clock starts at 1/1/1970, but counts the years from 1900. 105 */ 106#define STARTOFTIME 1970 107#define CLOCK_BASE_YEAR 1900 108 109#endif /* _RTCVAR_H_ */ 110