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oasis-root

Compiled tree of Oasis Linux based on own branch at <https://hacktivis.me/git/oasis/> git clone https://anongit.hacktivis.me/git/oasis-root.git

timex.h (7817B)

    

  1. /*****************************************************************************
  2.  *                                                                           *
  3.  * Copyright (c) David L. Mills 1993                                         *
  4.  *                                                                           *
  5.  * Permission to use, copy, modify, and distribute this software and its     *
  6.  * documentation for any purpose and without fee is hereby granted, provided *
  7.  * that the above copyright notice appears in all copies and that both the   *
  8.  * copyright notice and this permission notice appear in supporting          *
  9.  * documentation, and that the name University of Delaware not be used in    *
  10.  * advertising or publicity pertaining to distribution of the software       *
  11.  * without specific, written prior permission.  The University of Delaware   *
  12.  * makes no representations about the suitability this software for any      *
  13.  * purpose.  It is provided "as is" without express or implied warranty.     *
  14.  *                                                                           *
  15.  *****************************************************************************/
  17. /*
  18.  * Modification history timex.h
  19.  *
  20.  * 29 Dec 97	Russell King
  21.  *	Moved CLOCK_TICK_RATE, CLOCK_TICK_FACTOR and FINETUNE to asm/timex.h
  22.  *	for ARM machines
  23.  *
  24.  *  9 Jan 97    Adrian Sun
  25.  *      Shifted LATCH define to allow access to alpha machines.
  26.  *
  27.  * 26 Sep 94	David L. Mills
  28.  *	Added defines for hybrid phase/frequency-lock loop.
  29.  *
  30.  * 19 Mar 94	David L. Mills
  31.  *	Moved defines from kernel routines to header file and added new
  32.  *	defines for PPS phase-lock loop.
  33.  *
  34.  * 20 Feb 94	David L. Mills
  35.  *	Revised status codes and structures for external clock and PPS
  36.  *	signal discipline.
  37.  *
  38.  * 28 Nov 93	David L. Mills
  39.  *	Adjusted parameters to improve stability and increase poll
  40.  *	interval.
  41.  *
  42.  * 17 Sep 93    David L. Mills
  43.  *      Created file $NTP/include/sys/timex.h
  44.  * 07 Oct 93    Torsten Duwe
  45.  *      Derived linux/timex.h
  46.  * 1995-08-13    Torsten Duwe
  47.  *      kernel PLL updated to 1994-12-13 specs (rfc-1589)
  48.  * 1997-08-30    Ulrich Windl
  49.  *      Added new constant NTP_PHASE_LIMIT
  50.  * 2004-08-12    Christoph Lameter
  51.  *      Reworked time interpolation logic
  52.  */
  53. #ifndef _LINUX_TIMEX_H
  54. #define _LINUX_TIMEX_H
  56. #include <linux/time.h>
  58. #define NTP_API		4	/* NTP API version */
  60. /*
  61.  * syscall interface - used (mainly by NTP daemon)
  62.  * to discipline kernel clock oscillator
  63.  */
  64. struct timex {
  65. 	unsigned int modes;	/* mode selector */
  66. 	__kernel_long_t offset;	/* time offset (usec) */
  67. 	__kernel_long_t freq;	/* frequency offset (scaled ppm) */
  68. 	__kernel_long_t maxerror;/* maximum error (usec) */
  69. 	__kernel_long_t esterror;/* estimated error (usec) */
  70. 	int status;		/* clock command/status */
  71. 	__kernel_long_t constant;/* pll time constant */
  72. 	__kernel_long_t precision;/* clock precision (usec) (read only) */
  73. 	__kernel_long_t tolerance;/* clock frequency tolerance (ppm)
  74. 				   * (read only)
  75. 				   */
  76. 	struct timeval time;	/* (read only, except for ADJ_SETOFFSET) */
  77. 	__kernel_long_t tick;	/* (modified) usecs between clock ticks */
  79. 	__kernel_long_t ppsfreq;/* pps frequency (scaled ppm) (ro) */
  80. 	__kernel_long_t jitter; /* pps jitter (us) (ro) */
  81. 	int shift;              /* interval duration (s) (shift) (ro) */
  82. 	__kernel_long_t stabil;            /* pps stability (scaled ppm) (ro) */
  83. 	__kernel_long_t jitcnt; /* jitter limit exceeded (ro) */
  84. 	__kernel_long_t calcnt; /* calibration intervals (ro) */
  85. 	__kernel_long_t errcnt; /* calibration errors (ro) */
  86. 	__kernel_long_t stbcnt; /* stability limit exceeded (ro) */
  88. 	int tai;		/* TAI offset (ro) */
  90. 	int  :32; int  :32; int  :32; int  :32;
  91. 	int  :32; int  :32; int  :32; int  :32;
  92. 	int  :32; int  :32; int  :32;
  93. };
  95. struct __kernel_timex_timeval {
  96. 	__kernel_time64_t       tv_sec;
  97. 	long long		tv_usec;
  98. };
  100. struct __kernel_timex {
  101. 	unsigned int modes;	/* mode selector */
  102. 	int :32;            /* pad */
  103. 	long long offset;	/* time offset (usec) */
  104. 	long long freq;	/* frequency offset (scaled ppm) */
  105. 	long long maxerror;/* maximum error (usec) */
  106. 	long long esterror;/* estimated error (usec) */
  107. 	int status;		/* clock command/status */
  108. 	int :32;            /* pad */
  109. 	long long constant;/* pll time constant */
  110. 	long long precision;/* clock precision (usec) (read only) */
  111. 	long long tolerance;/* clock frequency tolerance (ppm)
  112. 				   * (read only)
  113. 				   */
  114. 	struct __kernel_timex_timeval time;	/* (read only, except for ADJ_SETOFFSET) */
  115. 	long long tick;	/* (modified) usecs between clock ticks */
  117. 	long long ppsfreq;/* pps frequency (scaled ppm) (ro) */
  118. 	long long jitter; /* pps jitter (us) (ro) */
  119. 	int shift;              /* interval duration (s) (shift) (ro) */
  120. 	int :32;            /* pad */
  121. 	long long stabil;            /* pps stability (scaled ppm) (ro) */
  122. 	long long jitcnt; /* jitter limit exceeded (ro) */
  123. 	long long calcnt; /* calibration intervals (ro) */
  124. 	long long errcnt; /* calibration errors (ro) */
  125. 	long long stbcnt; /* stability limit exceeded (ro) */
  127. 	int tai;		/* TAI offset (ro) */
  129. 	int  :32; int  :32; int  :32; int  :32;
  130. 	int  :32; int  :32; int  :32; int  :32;
  131. 	int  :32; int  :32; int  :32;
  132. };
  134. /*
  135.  * Mode codes (timex.mode)
  136.  */
  137. #define ADJ_OFFSET		0x0001	/* time offset */
  138. #define ADJ_FREQUENCY		0x0002	/* frequency offset */
  139. #define ADJ_MAXERROR		0x0004	/* maximum time error */
  140. #define ADJ_ESTERROR		0x0008	/* estimated time error */
  141. #define ADJ_STATUS		0x0010	/* clock status */
  142. #define ADJ_TIMECONST		0x0020	/* pll time constant */
  143. #define ADJ_TAI			0x0080	/* set TAI offset */
  144. #define ADJ_SETOFFSET		0x0100  /* add 'time' to current time */
  145. #define ADJ_MICRO		0x1000	/* select microsecond resolution */
  146. #define ADJ_NANO		0x2000	/* select nanosecond resolution */
  147. #define ADJ_TICK		0x4000	/* tick value */
  149. #define ADJ_OFFSET_SINGLESHOT	0x8001	/* old-fashioned adjtime */
  150. #define ADJ_OFFSET_SS_READ	0xa001	/* read-only adjtime */
  152. /* NTP userland likes the MOD_ prefix better */
  153. #define MOD_OFFSET	ADJ_OFFSET
  154. #define MOD_FREQUENCY	ADJ_FREQUENCY
  155. #define MOD_MAXERROR	ADJ_MAXERROR
  156. #define MOD_ESTERROR	ADJ_ESTERROR
  157. #define MOD_STATUS	ADJ_STATUS
  158. #define MOD_TIMECONST	ADJ_TIMECONST
  159. #define MOD_TAI	ADJ_TAI
  160. #define MOD_MICRO	ADJ_MICRO
  161. #define MOD_NANO	ADJ_NANO
  164. /*
  165.  * Status codes (timex.status)
  166.  */
  167. #define STA_PLL		0x0001	/* enable PLL updates (rw) */
  168. #define STA_PPSFREQ	0x0002	/* enable PPS freq discipline (rw) */
  169. #define STA_PPSTIME	0x0004	/* enable PPS time discipline (rw) */
  170. #define STA_FLL		0x0008	/* select frequency-lock mode (rw) */
  172. #define STA_INS		0x0010	/* insert leap (rw) */
  173. #define STA_DEL		0x0020	/* delete leap (rw) */
  174. #define STA_UNSYNC	0x0040	/* clock unsynchronized (rw) */
  175. #define STA_FREQHOLD	0x0080	/* hold frequency (rw) */
  177. #define STA_PPSSIGNAL	0x0100	/* PPS signal present (ro) */
  178. #define STA_PPSJITTER	0x0200	/* PPS signal jitter exceeded (ro) */
  179. #define STA_PPSWANDER	0x0400	/* PPS signal wander exceeded (ro) */
  180. #define STA_PPSERROR	0x0800	/* PPS signal calibration error (ro) */
  182. #define STA_CLOCKERR	0x1000	/* clock hardware fault (ro) */
  183. #define STA_NANO	0x2000	/* resolution (0 = us, 1 = ns) (ro) */
  184. #define STA_MODE	0x4000	/* mode (0 = PLL, 1 = FLL) (ro) */
  185. #define STA_CLK		0x8000	/* clock source (0 = A, 1 = B) (ro) */
  187. /* read-only bits */
  188. #define STA_RONLY (STA_PPSSIGNAL | STA_PPSJITTER | STA_PPSWANDER | \
  189. 	STA_PPSERROR | STA_CLOCKERR | STA_NANO | STA_MODE | STA_CLK)
  191. /*
  192.  * Clock states (time_state)
  193.  */
  194. #define TIME_OK		0	/* clock synchronized, no leap second */
  195. #define TIME_INS	1	/* insert leap second */
  196. #define TIME_DEL	2	/* delete leap second */
  197. #define TIME_OOP	3	/* leap second in progress */
  198. #define TIME_WAIT	4	/* leap second has occurred */
  199. #define TIME_ERROR	5	/* clock not synchronized */
  200. #define TIME_BAD	TIME_ERROR /* bw compat */
  203. #endif /* _LINUX_TIMEX_H */