Release 4.7 include/uapi/linux/timex.h
/*****************************************************************************
* *
* 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 */
/*
* 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;
};
/*
* Mode codes (timex.mode)
*/
#define ADJ_OFFSET 0x0001
/* time offset */
#define ADJ_FREQUENCY 0x0002
/* frequency offset */
#define ADJ_MAXERROR 0x0004
/* maximum time error */
#define ADJ_ESTERROR 0x0008
/* estimated time error */
#define ADJ_STATUS 0x0010
/* clock status */
#define ADJ_TIMECONST 0x0020
/* pll time constant */
#define ADJ_TAI 0x0080
/* set TAI offset */
#define ADJ_SETOFFSET 0x0100
/* add 'time' to current time */
#define ADJ_MICRO 0x1000
/* select microsecond resolution */
#define ADJ_NANO 0x2000
/* select nanosecond resolution */
#define ADJ_TICK 0x4000
/* tick value */
#ifndef __KERNEL__
#define ADJ_OFFSET_SINGLESHOT 0x8001
/* old-fashioned adjtime */
#define ADJ_OFFSET_SS_READ 0xa001
/* 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 0x0001
/* enable PLL updates (rw) */
#define STA_PPSFREQ 0x0002
/* enable PPS freq discipline (rw) */
#define STA_PPSTIME 0x0004
/* enable PPS time discipline (rw) */
#define STA_FLL 0x0008
/* select frequency-lock mode (rw) */
#define STA_INS 0x0010
/* insert leap (rw) */
#define STA_DEL 0x0020
/* delete leap (rw) */
#define STA_UNSYNC 0x0040
/* clock unsynchronized (rw) */
#define STA_FREQHOLD 0x0080
/* hold frequency (rw) */
#define STA_PPSSIGNAL 0x0100
/* PPS signal present (ro) */
#define STA_PPSJITTER 0x0200
/* PPS signal jitter exceeded (ro) */
#define STA_PPSWANDER 0x0400
/* PPS signal wander exceeded (ro) */
#define STA_PPSERROR 0x0800
/* PPS signal calibration error (ro) */
#define STA_CLOCKERR 0x1000
/* clock hardware fault (ro) */
#define STA_NANO 0x2000
/* resolution (0 = us, 1 = ns) (ro) */
#define STA_MODE 0x4000
/* mode (0 = PLL, 1 = FLL) (ro) */
#define STA_CLK 0x8000
/* 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 */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| david howells | david howells | 365 | 95.80% | 1 | 50.00% |
| h.j. lu | h.j. lu | 16 | 4.20% | 1 | 50.00% |
| Total | 381 | 100.00% | 2 | 100.00% |
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