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Annotation of sys/arch/vax/include/clock.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: clock.h,v 1.6 2006/08/27 16:55:41 miod Exp $ */
        !             2: /*     $NetBSD: clock.h,v 1.4 1999/09/06 19:52:53 ragge Exp $ */
        !             3: /*
        !             4:  * Copyright (c) 1996 Ludd, University of Lule}, Sweden.
        !             5:  * All rights reserved.
        !             6:  *
        !             7:  * Redistribution and use in source and binary forms, with or without
        !             8:  * modification, are permitted provided that the following conditions
        !             9:  * are met:
        !            10:  * 1. Redistributions of source code must retain the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer.
        !            12:  * 2. Redistributions in binary form must reproduce the above copyright
        !            13:  *    notice, this list of conditions and the following disclaimer in the
        !            14:  *    documentation and/or other materials provided with the distribution.
        !            15:  * 3. All advertising materials mentioning features or use of this software
        !            16:  *    must display the following acknowledgement:
        !            17:  *     This product includes software developed at Ludd, University of
        !            18:  *     Lule}, Sweden and its contributors.
        !            19:  * 4. The name of the author may not be used to endorse or promote products
        !            20:  *    derived from this software without specific prior written permission
        !            21:  *
        !            22:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
        !            23:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
        !            24:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
        !            25:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
        !            26:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
        !            27:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
        !            28:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
        !            29:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
        !            30:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
        !            31:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
        !            32:  */
        !            33:
        !            34: /*
        !            35:  * Time constants. These are unlikely to change.
        !            36:  */
        !            37: #define IS_LEAPYEAR(y) (((y % 4) == 0) && (y % 100))
        !            38:
        !            39: #define SEC_PER_MIN    (60)
        !            40: #define SEC_PER_HOUR   (SEC_PER_MIN * 60)
        !            41: #define SEC_PER_DAY    (SEC_PER_HOUR * 24)
        !            42: #define DAYSPERYEAR(y) (IS_LEAPYEAR(y) ? 366 : 365)
        !            43: #define SECPERYEAR(y)  (DAYSPERYEAR(y) * SEC_PER_DAY)
        !            44:
        !            45: #define CLKREAD_OK     0
        !            46: #define CLKREAD_BAD    -1
        !            47: #define CLKREAD_WARN   -2
        !            48:
        !            49: #define TODRBASE       (1 << 28) /* Rumours say it comes from VMS */
        !            50:
        !            51: #define        SEC_OFF         0
        !            52: #define        MIN_OFF         2
        !            53: #define        HR_OFF          4
        !            54: #define        WDAY_OFF        6
        !            55: #define        DAY_OFF         7
        !            56: #define        MON_OFF         8
        !            57: #define        YR_OFF          9
        !            58: #define        CSRA_OFF        10
        !            59: #define        CSRB_OFF        11
        !            60: #define        CSRD_OFF        13
        !            61:
        !            62: #define        CSRA_UIP        0200
        !            63: #define        CSRB_SET        0200
        !            64: #define        CSRB_24         0002
        !            65: #define        CSRB_DM         0004
        !            66: #define        CSRD_VRT        0200
        !            67:
        !            68: /* Var's used when dealing with clock chip */
        !            69: extern volatile short *clk_page;
        !            70: extern int clk_adrshift, clk_tweak;
        !            71:
        !            72: /* Prototypes */
        !            73: int    generic_clkread(time_t);
        !            74: void   generic_clkwrite(void);
        !            75: int    chip_clkread(time_t);
        !            76: void   chip_clkwrite(void);
        !            77: int    missing_clkread(time_t);
        !            78: void   missing_clkwrite(void);