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      1 /*	$NetBSD: clock.h,v 1.10 2017/05/22 17:12:11 ragge Exp $ */
      2 /*
      3  * Copyright (c) 1996 Ludd, University of Lule}, Sweden.
      4  * All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 #ifndef _VAX_CLOCK_H_
     27 #define	_VAX_CLOCK_H_
     28 
     29 #include <dev/clock_subr.h>
     30 
     31 /*
     32  * Time constants. These are unlikely to change.
     33  */
     34 #define TODRBASE	(1 << 28) /* Rumours says it comes from VMS */
     35 
     36 #define	SEC_OFF		0
     37 #define	MIN_OFF		2
     38 #define	HR_OFF		4
     39 #define	WDAY_OFF	6
     40 #define	DAY_OFF		7
     41 #define	MON_OFF		8
     42 #define	YR_OFF		9
     43 #define	CSRA_OFF	10
     44 #define	CSRB_OFF	11
     45 #define	CSRD_OFF	13
     46 
     47 #define	CSRA_UIP	0200
     48 #define	CSRB_SET	0200
     49 #define	CSRB_24		0002
     50 #define	CSRB_DM		0004
     51 #define	CSRD_VRT	0200
     52 
     53 /* Var's used when dealing with clock chip */
     54 extern	volatile short *clk_page;
     55 extern	int clk_adrshift, clk_tweak;
     56 
     57 /* Prototypes */
     58 int generic_gettime(struct timeval *);
     59 void generic_settime(struct timeval *);
     60 int chip_gettime(struct timeval *);
     61 void chip_settime(struct timeval *);
     62 int yeartonum(int);
     63 int numtoyear(int);
     64 
     65 #endif /* _VAX_CLOCK_H_ */
     66