78 lines
2.8 KiB
C
78 lines
2.8 KiB
C
/* $NetBSD: clock.h,v 1.5 2000/07/26 11:54:34 ragge Exp $ */
|
|
/*
|
|
* Copyright (c) 1996 Ludd, University of Lule}, Sweden.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed at Ludd, University of
|
|
* Lule}, Sweden and its contributors.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* Time constants. These are unlikely to change.
|
|
*/
|
|
#define IS_LEAPYEAR(y) (((y % 4) == 0) && (y % 100))
|
|
|
|
#define SEC_PER_MIN (60)
|
|
#define SEC_PER_HOUR (SEC_PER_MIN * 60)
|
|
#define SEC_PER_DAY (SEC_PER_HOUR * 24)
|
|
#define DAYSPERYEAR(y) (IS_LEAPYEAR(y) ? 366 : 365)
|
|
#define SECPERYEAR(y) (DAYSPERYEAR(y) * SEC_PER_DAY)
|
|
|
|
#define CLKREAD_OK 0
|
|
#define CLKREAD_BAD -1
|
|
#define CLKREAD_WARN -2
|
|
|
|
#define TODRBASE (1 << 28) /* Rumours says it comes from VMS */
|
|
|
|
#define SEC_OFF 0
|
|
#define MIN_OFF 2
|
|
#define HR_OFF 4
|
|
#define WDAY_OFF 6
|
|
#define DAY_OFF 7
|
|
#define MON_OFF 8
|
|
#define YR_OFF 9
|
|
#define CSRA_OFF 10
|
|
#define CSRB_OFF 11
|
|
#define CSRD_OFF 13
|
|
|
|
#define CSRA_UIP 0200
|
|
#define CSRB_SET 0200
|
|
#define CSRB_24 0002
|
|
#define CSRB_DM 0004
|
|
#define CSRD_VRT 0200
|
|
|
|
/* Var's used when dealing with clock chip */
|
|
extern volatile short *clk_page;
|
|
extern int clk_adrshift, clk_tweak;
|
|
|
|
/* Prototypes */
|
|
int generic_clkread(time_t);
|
|
void generic_clkwrite(void);
|
|
int chip_clkread(time_t);
|
|
void chip_clkwrite(void);
|
|
int yeartonum(int);
|
|
int numtoyear(int);
|