clock.h

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    1 /*
    2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
    3  *
    4  * @APPLE_LICENSE_HEADER_START@
    5  * 
    6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
    7  * 
    8  * This file contains Original Code and/or Modifications of Original Code
    9  * as defined in and that are subject to the Apple Public Source License
   10  * Version 2.0 (the 'License'). You may not use this file except in
   11  * compliance with the License. Please obtain a copy of the License at
   12  * http://www.opensource.apple.com/apsl/ and read it before using this
   13  * file.
   14  * 
   15  * The Original Code and all software distributed under the License are
   16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
   17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
   18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
   19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
   20  * Please see the License for the specific language governing rights and
   21  * limitations under the License.
   22  * 
   23  * @APPLE_LICENSE_HEADER_END@
   24  */
   25 /*
   26  * @OSF_COPYRIGHT@
   27  * 
   28  */
   29 
   30 #ifndef _PPC_CLOCK_H_
   31 #define _PPC_CLOCK_H_
   32 
   33 #include <machine/mach_param.h>
   34 
   35 #define CLK_SPEED       0.0000012766    /* time to complete a clock (3 MHz) */
   36 
   37 #if HZ == 120
   38 #  define CLK_INTERVAL  6528    /* clocks to hit CLK_TCK ticks per sec */
   39 #elif HZ == 100
   40 #  define CLK_INTERVAL  7833    /* clocks to hit CLK_TCK ticks per sec */
   41 #elif HZ == 60
   42 #  define CLK_INTERVAL  13055   /* clocks to hit CLK_TCK ticks per sec */
   43 #else
   44 #error "unknown clock speed"
   45 #endif
   46                         /* 6528 for 119.998 Hz. */
   47                         /* 7833 for 100.004 Hz */
   48                         /* 13055 for 60.002 Hz. */
   49 #define CLK_INTH        (CLK_INTERVAL >> 8)
   50 #define CLK_INTL        (CLK_INTERVAL & 0xff)
   51 
   52 #define SECDAY  ((unsigned)(24*60*60))
   53 #define SECYR   ((unsigned)(365*SECDAY + SECDAY/4))
   54 
   55 #endif /* _PPC_CLOCK_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/osfmk/ppc/clock.h

FreeBSD/Linux Kernel Cross Reference
sys/osfmk/ppc/clock.h