This is a white-space/comment cleanup commit as a precursor for
some upcoming work on the NTP kernel PLL.
This commit is contained in:
parent
02032ae5a2
commit
35163b6c15
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=271855
230
sys/sys/timex.h
230
sys/sys/timex.h
@ -2,6 +2,7 @@
|
||||
***********************************************************************
|
||||
* *
|
||||
* Copyright (c) David L. Mills 1993-2001 *
|
||||
* Copyright (c) Poul-Henning Kamp 2000-2001 *
|
||||
* *
|
||||
* Permission to use, copy, modify, and distribute this software and *
|
||||
* its documentation for any purpose and without fee is hereby *
|
||||
@ -15,94 +16,30 @@
|
||||
* purpose. It is provided "as is" without express or implied *
|
||||
* warranty. *
|
||||
* *
|
||||
**********************************************************************/
|
||||
|
||||
/*
|
||||
* Modification history timex.h
|
||||
*
|
||||
* 16 Aug 00 David L. Mills
|
||||
* API Version 4. Added MOD_TAI and tai member of ntptimeval
|
||||
* structure.
|
||||
*
|
||||
* 17 Nov 98 David L. Mills
|
||||
* Revised for nanosecond kernel and user interface.
|
||||
*
|
||||
* 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
|
||||
***********************************************************************
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
/*
|
||||
*
|
||||
* This header file defines the Network Time Protocol (NTP) interfaces
|
||||
* for user and daemon application programs. These are implemented using
|
||||
* defined syscalls and data structures and require specific kernel
|
||||
* support.
|
||||
* for user and daemon application programs.
|
||||
*
|
||||
* The original precision time kernels developed from 1993 have an
|
||||
* ultimate resolution of one microsecond; however, the most recent
|
||||
* kernels have an ultimate resolution of one nanosecond. In these
|
||||
* kernels, a ntp_adjtime() syscalls can be used to determine which
|
||||
* resolution is in use and to select either one at any time. The
|
||||
* resolution selected affects the scaling of certain fields in the
|
||||
* ntp_gettime() and ntp_adjtime() syscalls, as described below.
|
||||
* This file was originally created 17 Sep 93 by David L. Mills, Professor
|
||||
* of University of Delaware, building on work which had already been ongoing
|
||||
* for a decade and a half at that point in time.
|
||||
*
|
||||
* NAME
|
||||
* ntp_gettime - NTP user application interface
|
||||
* In 2000 the APIs got a upgrade from microseconds to nanoseconds,
|
||||
* a joint work between Poul-Henning Kamp and David L. Mills.
|
||||
*
|
||||
* SYNOPSIS
|
||||
* #include <sys/timex.h>
|
||||
*
|
||||
* int ntp_gettime(struct ntptimeval *ntv);
|
||||
*
|
||||
* DESCRIPTION
|
||||
* The time returned by ntp_gettime() is in a timespec structure,
|
||||
* but may be in either microsecond (seconds and microseconds) or
|
||||
* nanosecond (seconds and nanoseconds) format. The particular
|
||||
* format in use is determined by the STA_NANO bit of the status
|
||||
* word returned by the ntp_adjtime() syscall.
|
||||
*
|
||||
* NAME
|
||||
* ntp_adjtime - NTP daemon application interface
|
||||
*
|
||||
* SYNOPSIS
|
||||
* #include <sys/timex.h>
|
||||
* #include <sys/syscall.h>
|
||||
*
|
||||
* int syscall(SYS_ntp_adjtime, tptr);
|
||||
* int SYS_ntp_adjtime;
|
||||
* struct timex *tptr;
|
||||
*
|
||||
* DESCRIPTION
|
||||
* Certain fields of the timex structure are interpreted in either
|
||||
* microseconds or nanoseconds according to the state of the
|
||||
* STA_NANO bit in the status word. See the description below for
|
||||
* further information.
|
||||
*/
|
||||
|
||||
#ifndef _SYS_TIMEX_H_
|
||||
#define _SYS_TIMEX_H_ 1
|
||||
#define NTP_API 4 /* NTP API version */
|
||||
|
||||
#define NTP_API 4 /* NTP API version */
|
||||
|
||||
#ifdef __FreeBSD__
|
||||
#include <sys/_timespec.h>
|
||||
#endif /* __FreeBSD__ */
|
||||
#ifndef MSDOS /* Microsoft specific */
|
||||
#include <sys/syscall.h>
|
||||
#endif /* MSDOS */
|
||||
|
||||
/*
|
||||
* The following defines establish the performance envelope of the
|
||||
@ -113,112 +50,107 @@
|
||||
* mode. Between these two limits the operating mode is selected by the
|
||||
* STA_FLL bit in the status word.
|
||||
*/
|
||||
#define MAXPHASE 500000000L /* max phase error (ns) */
|
||||
#define MAXFREQ 500000L /* max freq error (ns/s) */
|
||||
#define MINSEC 256 /* min FLL update interval (s) */
|
||||
#define MAXSEC 2048 /* max PLL update interval (s) */
|
||||
#define NANOSECOND 1000000000L /* nanoseconds in one second */
|
||||
#define SCALE_PPM (65536 / 1000) /* crude ns/s to scaled PPM */
|
||||
#define MAXTC 10 /* max time constant */
|
||||
|
||||
#define MAXPHASE 500000000L /* max phase error (ns) */
|
||||
#define MAXFREQ 500000L /* max freq error (ns/s) */
|
||||
#define MINSEC 256 /* min FLL update interval (s) */
|
||||
#define MAXSEC 2048 /* max PLL update interval (s) */
|
||||
#define NANOSECOND 1000000000L /* nanoseconds in one second */
|
||||
#define SCALE_PPM (65536 / 1000) /* crude ns/s to scaled PPM */
|
||||
#define MAXTC 10 /* max time constant */
|
||||
|
||||
/*
|
||||
* The following defines and structures define the user interface for
|
||||
* the ntp_gettime() and ntp_adjtime() syscalls.
|
||||
*
|
||||
* Control mode codes (timex.modes)
|
||||
*/
|
||||
#define MOD_OFFSET 0x0001 /* set time offset */
|
||||
#define MOD_FREQUENCY 0x0002 /* set frequency offset */
|
||||
#define MOD_MAXERROR 0x0004 /* set maximum time error */
|
||||
#define MOD_ESTERROR 0x0008 /* set estimated time error */
|
||||
#define MOD_STATUS 0x0010 /* set clock status bits */
|
||||
#define MOD_TIMECONST 0x0020 /* set PLL time constant */
|
||||
#define MOD_PPSMAX 0x0040 /* set PPS maximum averaging time */
|
||||
#define MOD_TAI 0x0080 /* set TAI offset */
|
||||
#define MOD_MICRO 0x1000 /* select microsecond resolution */
|
||||
#define MOD_NANO 0x2000 /* select nanosecond resolution */
|
||||
#define MOD_CLKB 0x4000 /* select clock B */
|
||||
#define MOD_CLKA 0x8000 /* select clock A */
|
||||
#define MOD_OFFSET 0x0001 /* set time offset */
|
||||
#define MOD_FREQUENCY 0x0002 /* set frequency offset */
|
||||
#define MOD_MAXERROR 0x0004 /* set maximum time error */
|
||||
#define MOD_ESTERROR 0x0008 /* set estimated time error */
|
||||
#define MOD_STATUS 0x0010 /* set clock status bits */
|
||||
#define MOD_TIMECONST 0x0020 /* set PLL time constant */
|
||||
#define MOD_PPSMAX 0x0040 /* set PPS maximum averaging time */
|
||||
#define MOD_TAI 0x0080 /* set TAI offset */
|
||||
#define MOD_MICRO 0x1000 /* select microsecond resolution */
|
||||
#define MOD_NANO 0x2000 /* select nanosecond resolution */
|
||||
#define MOD_CLKB 0x4000 /* select clock B */
|
||||
#define MOD_CLKA 0x8000 /* select clock A */
|
||||
|
||||
/*
|
||||
* 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 /* enable FLL 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) */
|
||||
#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 /* enable FLL 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) */
|
||||
|
||||
#define STA_RONLY (STA_PPSSIGNAL | STA_PPSJITTER | STA_PPSWANDER | \
|
||||
STA_PPSERROR | STA_CLOCKERR | STA_NANO | STA_MODE | STA_CLK)
|
||||
|
||||
/*
|
||||
* Clock states (time_state)
|
||||
* Clock states (ntptimeval.time_state)
|
||||
*/
|
||||
#define TIME_OK 0 /* no leap second warning */
|
||||
#define TIME_INS 1 /* insert leap second warning */
|
||||
#define TIME_DEL 2 /* delete leap second warning */
|
||||
#define TIME_OOP 3 /* leap second in progress */
|
||||
#define TIME_WAIT 4 /* leap second has occured */
|
||||
#define TIME_ERROR 5 /* error (see status word) */
|
||||
#define TIME_OK 0 /* no leap second warning */
|
||||
#define TIME_INS 1 /* insert leap second warning */
|
||||
#define TIME_DEL 2 /* delete leap second warning */
|
||||
#define TIME_OOP 3 /* leap second in progress */
|
||||
#define TIME_WAIT 4 /* leap second has occured */
|
||||
#define TIME_ERROR 5 /* error (see status word) */
|
||||
|
||||
/*
|
||||
* NTP user interface (ntp_gettime()) - used to read kernel clock values
|
||||
*
|
||||
* Note: The time member is in microseconds if STA_NANO is zero and
|
||||
* nanoseconds if not.
|
||||
* NTP user interface -- ntp_gettime(2) - used to read kernel clock values
|
||||
*/
|
||||
struct ntptimeval {
|
||||
struct timespec time; /* current time (ns) (ro) */
|
||||
long maxerror; /* maximum error (us) (ro) */
|
||||
long esterror; /* estimated error (us) (ro) */
|
||||
long tai; /* TAI offset */
|
||||
int time_state; /* time status */
|
||||
struct timespec time; /* current time (ns) (ro) */
|
||||
long maxerror; /* maximum error (us) (ro) */
|
||||
long esterror; /* estimated error (us) (ro) */
|
||||
long tai; /* TAI offset */
|
||||
int time_state; /* time status */
|
||||
};
|
||||
|
||||
/*
|
||||
* NTP daemon interface (ntp_adjtime()) - used to discipline CPU clock
|
||||
* oscillator and determine status.
|
||||
* NTP daemon interface -- ntp_adjtime(2) -- used to discipline CPU clock
|
||||
* oscillator and control/determine status.
|
||||
*
|
||||
* Note: The offset, precision and jitter members are in microseconds if
|
||||
* STA_NANO is zero and nanoseconds if not.
|
||||
*/
|
||||
struct timex {
|
||||
unsigned int modes; /* clock mode bits (wo) */
|
||||
long offset; /* time offset (ns/us) (rw) */
|
||||
long freq; /* frequency offset (scaled PPM) (rw) */
|
||||
long maxerror; /* maximum error (us) (rw) */
|
||||
long esterror; /* estimated error (us) (rw) */
|
||||
int status; /* clock status bits (rw) */
|
||||
long constant; /* poll interval (log2 s) (rw) */
|
||||
long precision; /* clock precision (ns/us) (ro) */
|
||||
long tolerance; /* clock frequency tolerance (scaled
|
||||
* PPM) (ro) */
|
||||
unsigned int modes; /* clock mode bits (wo) */
|
||||
long offset; /* time offset (ns/us) (rw) */
|
||||
long freq; /* frequency offset (scaled PPM) (rw) */
|
||||
long maxerror; /* maximum error (us) (rw) */
|
||||
long esterror; /* estimated error (us) (rw) */
|
||||
int status; /* clock status bits (rw) */
|
||||
long constant; /* poll interval (log2 s) (rw) */
|
||||
long precision; /* clock precision (ns/us) (ro) */
|
||||
long tolerance; /* clock frequency tolerance (scaled
|
||||
* PPM) (ro) */
|
||||
/*
|
||||
* The following read-only structure members are implemented
|
||||
* only if the PPS signal discipline is configured in the
|
||||
* kernel. They are included in all configurations to insure
|
||||
* portability.
|
||||
*/
|
||||
long ppsfreq; /* PPS frequency (scaled PPM) (ro) */
|
||||
long jitter; /* PPS jitter (ns/us) (ro) */
|
||||
int shift; /* interval duration (s) (shift) (ro) */
|
||||
long stabil; /* PPS stability (scaled PPM) (ro) */
|
||||
long jitcnt; /* jitter limit exceeded (ro) */
|
||||
long calcnt; /* calibration intervals (ro) */
|
||||
long errcnt; /* calibration errors (ro) */
|
||||
long stbcnt; /* stability limit exceeded (ro) */
|
||||
long ppsfreq; /* PPS frequency (scaled PPM) (ro) */
|
||||
long jitter; /* PPS jitter (ns/us) (ro) */
|
||||
int shift; /* interval duration (s) (shift) (ro) */
|
||||
long stabil; /* PPS stability (scaled PPM) (ro) */
|
||||
long jitcnt; /* jitter limit exceeded (ro) */
|
||||
long calcnt; /* calibration intervals (ro) */
|
||||
long errcnt; /* calibration errors (ro) */
|
||||
long stbcnt; /* stability limit exceeded (ro) */
|
||||
};
|
||||
|
||||
#ifdef __FreeBSD__
|
||||
|
Loading…
Reference in New Issue
Block a user