source: svn/trunk/newcon3bcm2_21bu/toolchain/mips-linux-uclibc/include/sys/timex.h

/* Copyright (C) 1995, 1996, 1997, 1999 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#ifndef _SYS_TIMEX_H
#define _SYS_TIMEX_H    1

#include <features.h>
#include <sys/time.h>

/* These definitions from linux/timex.h as of 2.2.0.  */

struct ntptimeval
{
  struct timeval time;  /* current time (ro) */
  long int maxerror;    /* maximum error (us) (ro) */
  long int esterror;    /* estimated error (us) (ro) */
};

struct timex
{
  unsigned int modes;   /* mode selector */
  long int offset;      /* time offset (usec) */
  long int freq;        /* frequency offset (scaled ppm) */
  long int maxerror;    /* maximum error (usec) */
  long int esterror;    /* estimated error (usec) */
  int status;           /* clock command/status */
  long int constant;    /* pll time constant */
  long int precision;   /* clock precision (usec) (read only) */
  long int tolerance;   /* clock frequency tolerance (ppm) (read only) */
  struct timeval time;  /* (read only) */
  long int tick;        /* (modified) usecs between clock ticks */

  long int ppsfreq;     /* pps frequency (scaled ppm) (ro) */
  long int jitter;      /* pps jitter (us) (ro) */
  int shift;            /* interval duration (s) (shift) (ro) */
  long int stabil;      /* pps stability (scaled ppm) (ro) */
  long int jitcnt;      /* jitter limit exceeded (ro) */
  long int calcnt;      /* calibration intervals (ro) */
  long int errcnt;      /* calibration errors (ro) */
  long int 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 */

/* Maximum time constant of the PLL.  */
#define MAXTC           6

__BEGIN_DECLS

extern int __adjtimex (struct timex *__ntx) __THROW;
extern int adjtimex (struct timex *__ntx) __THROW;

extern int ntp_gettime (struct ntptimeval *__ntv) __THROW;
extern int ntp_adjtime (struct timex *__tntx) __THROW;

__END_DECLS

#endif /* sys/timex.h */