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Diffstat (limited to 'pfinet/linux-src/include/linux/timex.h')
| -rw-r--r-- | pfinet/linux-src/include/linux/timex.h | 277 |
1 files changed, 0 insertions, 277 deletions
diff --git a/pfinet/linux-src/include/linux/timex.h b/pfinet/linux-src/include/linux/timex.h deleted file mode 100644 index 653009ad..00000000 --- a/pfinet/linux-src/include/linux/timex.h +++ /dev/null @@ -1,277 +0,0 @@ -/***************************************************************************** - * * - * 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 - */ -#ifndef _LINUX_TIMEX_H -#define _LINUX_TIMEX_H - -/* - * The following defines establish the engineering parameters of the PLL - * model. The HZ variable establishes the timer interrupt frequency, 100 Hz - * for the SunOS kernel, 256 Hz for the Ultrix kernel and 1024 Hz for the - * OSF/1 kernel. The SHIFT_HZ define expresses the same value as the - * nearest power of two in order to avoid hardware multiply operations. - */ -#ifdef __alpha__ -# define SHIFT_HZ 10 /* log2(HZ) */ -#else -# define SHIFT_HZ 7 /* log2(HZ) */ -#endif - -/* - * SHIFT_KG and SHIFT_KF establish the damping of the PLL and are chosen - * for a slightly underdamped convergence characteristic. SHIFT_KH - * establishes the damping of the FLL and is chosen by wisdom and black - * art. - * - * MAXTC establishes the maximum time constant of the PLL. With the - * SHIFT_KG and SHIFT_KF values given and a time constant range from - * zero to MAXTC, the PLL will converge in 15 minutes to 16 hours, - * respectively. - */ -#define SHIFT_KG 6 /* phase factor (shift) */ -#define SHIFT_KF 16 /* PLL frequency factor (shift) */ -#define SHIFT_KH 2 /* FLL frequency factor (shift) */ -#define MAXTC 6 /* maximum time constant (shift) */ - -/* - * The SHIFT_SCALE define establishes the decimal point of the time_phase - * variable which serves as an extension to the low-order bits of the - * system clock variable. The SHIFT_UPDATE define establishes the decimal - * point of the time_offset variable which represents the current offset - * with respect to standard time. The FINEUSEC define represents 1 usec in - * scaled units. - * - * SHIFT_USEC defines the scaling (shift) of the time_freq and - * time_tolerance variables, which represent the current frequency - * offset and maximum frequency tolerance. - * - * FINEUSEC is 1 us in SHIFT_UPDATE units of the time_phase variable. - */ -#define SHIFT_SCALE 22 /* phase scale (shift) */ -#define SHIFT_UPDATE (SHIFT_KG + MAXTC) /* time offset scale (shift) */ -#define SHIFT_USEC 16 /* frequency offset scale (shift) */ -#define FINEUSEC (1L << SHIFT_SCALE) /* 1 us in phase units */ - -#define MAXPHASE 512000L /* max phase error (us) */ -#define MAXFREQ (512L << SHIFT_USEC) /* max frequency error (ppm) */ -#define MAXTIME (200L << PPS_AVG) /* max PPS error (jitter) (200 us) */ -#define MINSEC 16L /* min interval between updates (s) */ -#define MAXSEC 1200L /* max interval between updates (s) */ -#define NTP_PHASE_LIMIT (MAXPHASE << 5) /* beyond max. dispersion */ - -/* - * The following defines are used only if a pulse-per-second (PPS) - * signal is available and connected via a modem control lead, such as - * produced by the optional ppsclock feature incorporated in the Sun - * asynch driver. They establish the design parameters of the frequency- - * lock loop used to discipline the CPU clock oscillator to the PPS - * signal. - * - * PPS_AVG is the averaging factor for the frequency loop, as well as - * the time and frequency dispersion. - * - * PPS_SHIFT and PPS_SHIFTMAX specify the minimum and maximum - * calibration intervals, respectively, in seconds as a power of two. - * - * PPS_VALID is the maximum interval before the PPS signal is considered - * invalid and protocol updates used directly instead. - * - * MAXGLITCH is the maximum interval before a time offset of more than - * MAXTIME is believed. - */ -#define PPS_AVG 2 /* pps averaging constant (shift) */ -#define PPS_SHIFT 2 /* min interval duration (s) (shift) */ -#define PPS_SHIFTMAX 8 /* max interval duration (s) (shift) */ -#define PPS_VALID 120 /* pps signal watchdog max (s) */ -#define MAXGLITCH 30 /* pps signal glitch max (s) */ - -/* - * Pick up the architecture specific timex specifications - */ -#include <asm/timex.h> - -/* LATCH is used in the interval timer and ftape setup. */ -#define LATCH ((CLOCK_TICK_RATE + HZ/2) / HZ) /* For divider */ - -/* - * syscall interface - used (mainly by NTP daemon) - * to discipline kernel clock oscillator - */ -struct timex { - unsigned int modes; /* mode selector */ - long offset; /* time offset (usec) */ - long freq; /* frequency offset (scaled ppm) */ - long maxerror; /* maximum error (usec) */ - long esterror; /* estimated error (usec) */ - int status; /* clock command/status */ - long constant; /* pll time constant */ - long precision; /* clock precision (usec) (read only) */ - long tolerance; /* clock frequency tolerance (ppm) - * (read only) - */ - struct timeval time; /* (read only) */ - long tick; /* (modified) usecs between clock ticks */ - - long ppsfreq; /* pps frequency (scaled ppm) (ro) */ - long jitter; /* pps jitter (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) */ - - int :32; 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_TICK 0x4000 /* tick value */ -#define ADJ_OFFSET_SINGLESHOT 0x8001 /* old-fashioned adjtime */ - -/* xntp 3.4 compatibility names */ -#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_CLKB ADJ_TICK -#define MOD_CLKA ADJ_OFFSET_SINGLESHOT /* 0x8000 in original */ - - -/* - * 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_RONLY (STA_PPSSIGNAL | STA_PPSJITTER | STA_PPSWANDER | \ - STA_PPSERROR | STA_CLOCKERR) /* read-only bits */ - -/* - * 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 */ - -#ifdef __KERNEL__ -/* - * kernel variables - * Note: maximum error = NTP synch distance = dispersion + delay / 2; - * estimated error = NTP dispersion. - */ -extern long tick; /* timer interrupt period */ -extern int tickadj; /* amount of adjustment per tick */ - -/* - * phase-lock loop variables - */ -extern int time_state; /* clock status */ -extern int time_status; /* clock synchronization status bits */ -extern long time_offset; /* time adjustment (us) */ -extern long time_constant; /* pll time constant */ -extern long time_tolerance; /* frequency tolerance (ppm) */ -extern long time_precision; /* clock precision (us) */ -extern long time_maxerror; /* maximum error */ -extern long time_esterror; /* estimated error */ - -extern long time_phase; /* phase offset (scaled us) */ -extern long time_freq; /* frequency offset (scaled ppm) */ -extern long time_adj; /* tick adjust (scaled 1 / HZ) */ -extern long time_reftime; /* time at last adjustment (s) */ - -extern long time_adjust; /* The amount of adjtime left */ - -/* interface variables pps->timer interrupt */ -extern long pps_offset; /* pps time offset (us) */ -extern long pps_jitter; /* time dispersion (jitter) (us) */ -extern long pps_freq; /* frequency offset (scaled ppm) */ -extern long pps_stabil; /* frequency dispersion (scaled ppm) */ -extern long pps_valid; /* pps signal watchdog counter */ - -/* interface variables pps->adjtimex */ -extern int pps_shift; /* interval duration (s) (shift) */ -extern long pps_jitcnt; /* jitter limit exceeded */ -extern long pps_calcnt; /* calibration intervals */ -extern long pps_errcnt; /* calibration errors */ -extern long pps_stbcnt; /* stability limit exceeded */ - -#endif /* KERNEL */ - -#endif /* LINUX_TIMEX_H */ |