sys/arch/vax/include/clock.h

   1 /*      $NetBSD: clock.h,v 1.6 2006/09/05 19:32:57 matt 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  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed at Ludd, University of
  17  *      Lule}, Sweden and its contributors.
  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 #ifndef _VAX_CLOCK_H_
  33 #define _VAX_CLOCK_H_
  34
  35 #include <dev/clock_subr.h>
  36
  37 /*
  38  * Time constants. These are unlikely to change.
  39  */
  40 #define IS_LEAPYEAR(y) (((y % 4) == 0) && (y % 100))
  41
  42 #define SEC_PER_MIN     (60)
  43 #define SEC_PER_HOUR    (SEC_PER_MIN * 60)
  44 #define SEC_PER_DAY     (SEC_PER_HOUR * 24)
  45 #define DAYSPERYEAR(y)  (IS_LEAPYEAR(y) ? 366 : 365)
  46 #define SECPERYEAR(y)   (DAYSPERYEAR(y) * SEC_PER_DAY)
  47
  48 #define TODRBASE        (1 << 28) /* Rumours says it comes from VMS */
  49
  50 #define SEC_OFF         0
  51 #define MIN_OFF         2
  52 #define HR_OFF          4
  53 #define WDAY_OFF        6
  54 #define DAY_OFF         7
  55 #define MON_OFF         8
  56 #define YR_OFF          9
  57 #define CSRA_OFF        10
  58 #define CSRB_OFF        11
  59 #define CSRD_OFF        13
  60
  61 #define CSRA_UIP        0200
  62 #define CSRB_SET        0200
  63 #define CSRB_24         0002
  64 #define CSRB_DM         0004
  65 #define CSRD_VRT        0200
  66
  67 /* Var's used when dealing with clock chip */
  68 extern  volatile short *clk_page;
  69 extern  int clk_adrshift, clk_tweak;
  70
  71 /* Prototypes */
  72 int generic_gettime(struct timeval *);
  73 void generic_settime(struct timeval *);
  74 int chip_gettime(struct timeval *);
  75 void chip_settime(struct timeval *);
  76 int yeartonum(int);
  77 int numtoyear(int);
  78
  79 #endif /* _VAX_CLOCK_H_ */