1 /* $NetBSD: clock.h,v 1.8 2010/11/19 03:31:24 uwe 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) != 0)) || ((y % 400) == 0)) 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_ */ 80