Home | History | Annotate | Line # | Download | only in dev
rtc.h revision 1.1 
      1 /*
      2  * Copyright (c) 1994 Christian E. Hopps
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *      This product includes software developed by Christian E. Hopps.
     16  * 4. The name of the author may not be used to endorse or promote products
     17  *    derived from this software without specific prior written permission
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  *
     30  * information on A2000 clock from Harald Backert.
     31  * information on A3000 clock from Holger Emden.
     32  *
     33  *	$Id: rtc.h,v 1.1 1994/05/08 05:53:33 chopps Exp $
     34  */
     35 #ifndef _RTCVAR_H_
     36 #define _RTCVAR_H_
     37 
     38 struct rtclock2000 {
     39 	u_int  :28, second2:4;	/* lower digit */
     40 	u_int  :28, second1:4;	/* upper digit */
     41 	u_int  :28, minute2:4;	/* lower digit */
     42 	u_int  :28, minute1:4;	/* upper digit */
     43 	u_int  :28, hour2:4;	/* lower digit */
     44 	u_int  :28, hour1:4;	/* upper digit */
     45 	u_int  :28, day2:4;	/* lower digit */
     46 	u_int  :28, day1:4;	/* upper digit */
     47 	u_int  :28, month2:4;	/* lower digit */
     48 	u_int  :28, month1:4;	/* upper digit */
     49 	u_int  :28, year2:4;	/* lower digit */
     50 	u_int  :28, year1:4;	/* upper digit */
     51 	u_int  :28, week:4;	/* week */
     52 	u_int  :28, control1:4;	/* control-byte 1 */
     53 	u_int  :28, control2:4;	/* control-byte 2 */
     54 	u_int  :28, control3:4;	/* control-byte 3 */
     55 };
     56 
     57 /*
     58  * commands written to control1, HOLD before reading the clock,
     59  * FREE after done reading.
     60  */
     61 
     62 #define A2CONTROL1_HOLD		(1<<0)
     63 #define A2CONTROL1_BUSY		(1<<1)
     64 #define A2CONTROL3_24HMODE	(1<<2)
     65 #define A2HOUR1_PM		(1<<2)
     66 
     67 struct rtclock3000 {
     68 	u_int  :28, second2:4;	/* 0x03  lower digit */
     69 	u_int  :28, second1:4;	/* 0x07  upper digit */
     70 	u_int  :28, minute2:4;	/* 0x0b  lower digit */
     71 	u_int  :28, minute1:4;	/* 0x0f  upper digit */
     72 	u_int  :28, hour2:4;	/* 0x13  lower digit */
     73 	u_int  :28, hour1:4;	/* 0x17  upper digit */
     74 	u_int  :28, weekday:4;	/* 0x1b */
     75 	u_int  :28, day2:4;	/* 0x1f  lower digit */
     76 	u_int  :28, day1:4;	/* 0x23  upper digit */
     77 	u_int  :28, month2:4;	/* 0x27  lower digit */
     78 	u_int  :28, month1:4;	/* 0x2b  upper digit */
     79 	u_int  :28, year2:4;	/* 0x2f  lower digit */
     80 	u_int  :28, year1:4;	/* 0x33  upper digit */
     81 	u_int  :28, control1:4;	/* 0x37  control-byte 1 */
     82 	u_int  :28, control2:4;	/* 0x3b  control-byte 2 */
     83 	u_int  :28, control3:4;	/* 0x3f  control-byte 3 */
     84 };
     85 
     86 #define A3CONTROL1_HOLD_CLOCK	0
     87 #define A3CONTROL1_FREE_CLOCK	9
     88 
     89 #define A3BBC_SET_REG 	0xe0
     90 #define A3BBC_WRITE_REG	0xc2
     91 #define A3BBC_READ_REG	0xc3
     92 #define A3NUM_BBC_REGS	12
     93 
     94 #define FEBRUARY	2
     95 #define	STARTOFTIME	1970
     96 #define SECDAY		86400L
     97 #define SECYR		(SECDAY * 365)
     98 
     99 
    100 #define	leapyear(y)		(((y)%4)==0 && ((y)%100)!=0 || ((y)%400) == 0)
    101 #define	range_test(n, l, h)	((n) < (l) || (n) > (h))
    102 #define	days_in_year(a) 	(leapyear(a) ? 366 : 365)
    103 #define	days_in_month(a) 	(month_days[(a) - 1])
    104 
    105 #endif /* _RTCVAR_H_ */
    106