/*****************************************************************************
* *
* Copyright ( c ) David L . Mills 1993 *
* *
* Permission to use , copy , modify , and distribute this software and its *
* documentation for any purpose and without fee is hereby granted , provided *
* that the above copyright notice appears in all copies and that both the *
* copyright notice and this permission notice appear in supporting *
* documentation , and that the name University of Delaware not be used in *
* advertising or publicity pertaining to distribution of the software *
* without specific , written prior permission . The University of Delaware *
* makes no representations about the suitability this software for any *
* purpose . It is provided " as is " without express or implied warranty . *
* *
*****************************************************************************/
/*
* Modification history timex . h
*
* 29 Dec 97 Russell King
* Moved CLOCK_TICK_RATE , CLOCK_TICK_FACTOR and FINETUNE to asm / timex . h
* for ARM machines
*
* 9 Jan 97 Adrian Sun
* Shifted LATCH define to allow access to alpha machines .
*
* 26 Sep 94 David L . Mills
* Added defines for hybrid phase / frequency - lock loop .
*
* 19 Mar 94 David L . Mills
* Moved defines from kernel routines to header file and added new
* defines for PPS phase - lock loop .
*
* 20 Feb 94 David L . Mills
* Revised status codes and structures for external clock and PPS
* signal discipline .
*
* 28 Nov 93 David L . Mills
* Adjusted parameters to improve stability and increase poll
* interval .
*
* 17 Sep 93 David L . Mills
* Created file $ NTP / include / sys / timex . h
* 07 Oct 93 Torsten Duwe
* Derived linux / timex . h
* 1995 - 08 - 13 Torsten Duwe
* kernel PLL updated to 1994 - 12 - 13 specs ( rfc - 1589 )
* 1997 - 08 - 30 Ulrich Windl
* Added new constant NTP_PHASE_LIMIT
* 2004 - 08 - 12 Christoph Lameter
* Reworked time interpolation logic
*/
#ifndef _UAPI_LINUX_TIMEX_H
#define _UAPI_LINUX_TIMEX_H
#include <linux/time.h>
#define NTP_API 4 /* NTP API version */
#ifndef __KERNEL__
/*
* syscall interface - used ( mainly by NTP daemon )
* to discipline kernel clock oscillator
*/
struct timex {
unsigned int modes; /* mode selector */
__kernel_long_t offset; /* time offset (usec) */
__kernel_long_t freq; /* frequency offset (scaled ppm) */
__kernel_long_t maxerror;/* maximum error (usec) */
__kernel_long_t esterror;/* estimated error (usec) */
int status; /* clock command/status */
__kernel_long_t constant;/* pll time constant */
__kernel_long_t precision;/* clock precision (usec) (read only) */
__kernel_long_t tolerance;/* clock frequency tolerance (ppm)
* ( read only )
*/
struct timeval time; /* (read only, except for ADJ_SETOFFSET) */
__kernel_long_t tick; /* (modified) usecs between clock ticks */
__kernel_long_t ppsfreq;/* pps frequency (scaled ppm) (ro) */
__kernel_long_t jitter; /* pps jitter (us) (ro) */
int shift; /* interval duration (s) (shift) (ro) */
__kernel_long_t stabil; /* pps stability (scaled ppm) (ro) */
__kernel_long_t jitcnt; /* jitter limit exceeded (ro) */
__kernel_long_t calcnt; /* calibration intervals (ro) */
__kernel_long_t errcnt; /* calibration errors (ro) */
__kernel_long_t stbcnt; /* stability limit exceeded (ro) */
int tai; /* TAI offset (ro) */
int :32 ; int :32 ; int :32 ; int :32 ;
int :32 ; int :32 ; int :32 ; int :32 ;
int :32 ; int :32 ; int :32 ;
};
#endif
struct __kernel_timex_timeval {
__kernel_time64_t tv_sec;
long long tv_usec;
};
struct __kernel_timex {
unsigned int modes; /* mode selector */
int :32 ; /* pad */
long long offset; /* time offset (usec) */
long long freq; /* frequency offset (scaled ppm) */
long long maxerror;/* maximum error (usec) */
long long esterror;/* estimated error (usec) */
int status; /* clock command/status */
int :32 ; /* pad */
long long constant;/* pll time constant */
long long precision;/* clock precision (usec) (read only) */
long long tolerance;/* clock frequency tolerance (ppm)
* ( read only )
*/
struct __kernel_timex_timeval time; /* (read only, except for ADJ_SETOFFSET) */
long long tick; /* (modified) usecs between clock ticks */
long long ppsfreq;/* pps frequency (scaled ppm) (ro) */
long long jitter; /* pps jitter (us) (ro) */
int shift; /* interval duration (s) (shift) (ro) */
int :32 ; /* pad */
long long stabil; /* pps stability (scaled ppm) (ro) */
long long jitcnt; /* jitter limit exceeded (ro) */
long long calcnt; /* calibration intervals (ro) */
long long errcnt; /* calibration errors (ro) */
long long stbcnt; /* stability limit exceeded (ro) */
int tai; /* TAI offset (ro) */
int :32 ; int :32 ; int :32 ; int :32 ;
int :32 ; int :32 ; int :32 ; int :32 ;
int :32 ; int :32 ; int :32 ;
};
/*
* Mode codes ( timex . mode )
*/
#define ADJ_OFFSET 0 x0001 /* time offset */
#define ADJ_FREQUENCY 0 x0002 /* frequency offset */
#define ADJ_MAXERROR 0 x0004 /* maximum time error */
#define ADJ_ESTERROR 0 x0008 /* estimated time error */
#define ADJ_STATUS 0 x0010 /* clock status */
#define ADJ_TIMECONST 0 x0020 /* pll time constant */
#define ADJ_TAI 0 x0080 /* set TAI offset */
#define ADJ_SETOFFSET 0 x0100 /* add 'time' to current time */
#define ADJ_MICRO 0 x1000 /* select microsecond resolution */
#define ADJ_NANO 0 x2000 /* select nanosecond resolution */
#define ADJ_TICK 0 x4000 /* tick value */
#ifndef __KERNEL__
#define ADJ_OFFSET_SINGLESHOT 0 x8001 /* old-fashioned adjtime */
#define ADJ_OFFSET_SS_READ 0 xa001 /* read-only adjtime */
#endif
/* NTP userland likes the MOD_ prefix better */
#define MOD_OFFSET ADJ_OFFSET
#define MOD_FREQUENCY ADJ_FREQUENCY
#define MOD_MAXERROR ADJ_MAXERROR
#define MOD_ESTERROR ADJ_ESTERROR
#define MOD_STATUS ADJ_STATUS
#define MOD_TIMECONST ADJ_TIMECONST
#define MOD_TAI ADJ_TAI
#define MOD_MICRO ADJ_MICRO
#define MOD_NANO ADJ_NANO
/*
* Status codes ( timex . status )
*/
#define STA_PLL 0 x0001 /* enable PLL updates (rw) */
#define STA_PPSFREQ 0 x0002 /* enable PPS freq discipline (rw) */
#define STA_PPSTIME 0 x0004 /* enable PPS time discipline (rw) */
#define STA_FLL 0 x0008 /* select frequency-lock mode (rw) */
#define STA_INS 0 x0010 /* insert leap (rw) */
#define STA_DEL 0 x0020 /* delete leap (rw) */
#define STA_UNSYNC 0 x0040 /* clock unsynchronized (rw) */
#define STA_FREQHOLD 0 x0080 /* hold frequency (rw) */
#define STA_PPSSIGNAL 0 x0100 /* PPS signal present (ro) */
#define STA_PPSJITTER 0 x0200 /* PPS signal jitter exceeded (ro) */
#define STA_PPSWANDER 0 x0400 /* PPS signal wander exceeded (ro) */
#define STA_PPSERROR 0 x0800 /* PPS signal calibration error (ro) */
#define STA_CLOCKERR 0 x1000 /* clock hardware fault (ro) */
#define STA_NANO 0 x2000 /* resolution (0 = us, 1 = ns) (ro) */
#define STA_MODE 0 x4000 /* mode (0 = PLL, 1 = FLL) (ro) */
#define STA_CLK 0 x8000 /* clock source (0 = A, 1 = B) (ro) */
/* read-only bits */
#define STA_RONLY (STA_PPSSIGNAL | STA_PPSJITTER | STA_PPSWANDER | \
STA_PPSERROR | STA_CLOCKERR | STA_NANO | STA_MODE | STA_CLK)
/*
* Clock states ( time_state )
*/
#define TIME_OK 0 /* clock synchronized, no leap second */
#define TIME_INS 1 /* insert leap second */
#define TIME_DEL 2 /* delete leap second */
#define TIME_OOP 3 /* leap second in progress */
#define TIME_WAIT 4 /* leap second has occurred */
#define TIME_ERROR 5 /* clock not synchronized */
#define TIME_BAD TIME_ERROR /* bw compat */
#endif /* _UAPI_LINUX_TIMEX_H */
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