sysdeps/unix/sysv/linux/bits/timex.h

   1 /* Copyright (C) 1995-2019 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #ifndef _BITS_TIMEX_H
  19 #define _BITS_TIMEX_H   1
  20
  21 #include <bits/types.h>
  22 #include <bits/types/struct_timeval.h>
  23
  24 /* These definitions from linux/timex.h as of 3.18.  */
  25
  26 struct timex
  27 {
  28   unsigned int modes;           /* mode selector */
  29   __syscall_slong_t offset;     /* time offset (usec) */
  30   __syscall_slong_t freq;       /* frequency offset (scaled ppm) */
  31   __syscall_slong_t maxerror;   /* maximum error (usec) */
  32   __syscall_slong_t esterror;   /* estimated error (usec) */
  33   int status;                   /* clock command/status */
  34   __syscall_slong_t constant;   /* pll time constant */
  35   __syscall_slong_t precision;  /* clock precision (usec) (ro) */
  36   __syscall_slong_t tolerance;  /* clock frequency tolerance (ppm) (ro) */
  37   struct timeval time;          /* (read only, except for ADJ_SETOFFSET) */
  38   __syscall_slong_t tick;       /* (modified) usecs between clock ticks */
  39   __syscall_slong_t ppsfreq;    /* pps frequency (scaled ppm) (ro) */
  40   __syscall_slong_t jitter;     /* pps jitter (us) (ro) */
  41   int shift;                    /* interval duration (s) (shift) (ro) */
  42   __syscall_slong_t stabil;     /* pps stability (scaled ppm) (ro) */
  43   __syscall_slong_t jitcnt;     /* jitter limit exceeded (ro) */
  44   __syscall_slong_t calcnt;     /* calibration intervals (ro) */
  45   __syscall_slong_t errcnt;     /* calibration errors (ro) */
  46   __syscall_slong_t stbcnt;     /* stability limit exceeded (ro) */
  47
  48   int tai;                      /* TAI offset (ro) */
  49
  50   /* ??? */
  51   int  :32; int  :32; int  :32; int  :32;
  52   int  :32; int  :32; int  :32; int  :32;
  53   int  :32; int  :32; int  :32;
  54 };
  55
  56 /* Mode codes (timex.mode) */
  57 #define ADJ_OFFSET              0x0001  /* time offset */
  58 #define ADJ_FREQUENCY           0x0002  /* frequency offset */
  59 #define ADJ_MAXERROR            0x0004  /* maximum time error */
  60 #define ADJ_ESTERROR            0x0008  /* estimated time error */
  61 #define ADJ_STATUS              0x0010  /* clock status */
  62 #define ADJ_TIMECONST           0x0020  /* pll time constant */
  63 #define ADJ_TAI                 0x0080  /* set TAI offset */
  64 #define ADJ_SETOFFSET           0x0100  /* add 'time' to current time */
  65 #define ADJ_MICRO               0x1000  /* select microsecond resolution */
  66 #define ADJ_NANO                0x2000  /* select nanosecond resolution */
  67 #define ADJ_TICK                0x4000  /* tick value */
  68 #define ADJ_OFFSET_SINGLESHOT   0x8001  /* old-fashioned adjtime */
  69 #define ADJ_OFFSET_SS_READ      0xa001  /* read-only adjtime */
  70
  71 /* xntp 3.4 compatibility names */
  72 #define MOD_OFFSET      ADJ_OFFSET
  73 #define MOD_FREQUENCY   ADJ_FREQUENCY
  74 #define MOD_MAXERROR    ADJ_MAXERROR
  75 #define MOD_ESTERROR    ADJ_ESTERROR
  76 #define MOD_STATUS      ADJ_STATUS
  77 #define MOD_TIMECONST   ADJ_TIMECONST
  78 #define MOD_CLKB        ADJ_TICK
  79 #define MOD_CLKA        ADJ_OFFSET_SINGLESHOT /* 0x8000 in original */
  80 #define MOD_TAI         ADJ_TAI
  81 #define MOD_MICRO       ADJ_MICRO
  82 #define MOD_NANO        ADJ_NANO
  83
  84
  85 /* Status codes (timex.status) */
  86 #define STA_PLL         0x0001  /* enable PLL updates (rw) */
  87 #define STA_PPSFREQ     0x0002  /* enable PPS freq discipline (rw) */
  88 #define STA_PPSTIME     0x0004  /* enable PPS time discipline (rw) */
  89 #define STA_FLL         0x0008  /* select frequency-lock mode (rw) */
  90
  91 #define STA_INS         0x0010  /* insert leap (rw) */
  92 #define STA_DEL         0x0020  /* delete leap (rw) */
  93 #define STA_UNSYNC      0x0040  /* clock unsynchronized (rw) */
  94 #define STA_FREQHOLD    0x0080  /* hold frequency (rw) */
  95
  96 #define STA_PPSSIGNAL   0x0100  /* PPS signal present (ro) */
  97 #define STA_PPSJITTER   0x0200  /* PPS signal jitter exceeded (ro) */
  98 #define STA_PPSWANDER   0x0400  /* PPS signal wander exceeded (ro) */
  99 #define STA_PPSERROR    0x0800  /* PPS signal calibration error (ro) */
 100
 101 #define STA_CLOCKERR    0x1000  /* clock hardware fault (ro) */
 102 #define STA_NANO        0x2000  /* resolution (0 = us, 1 = ns) (ro) */
 103 #define STA_MODE        0x4000  /* mode (0 = PLL, 1 = FLL) (ro) */
 104 #define STA_CLK         0x8000  /* clock source (0 = A, 1 = B) (ro) */
 105
 106 /* Read-only bits */
 107 #define STA_RONLY (STA_PPSSIGNAL | STA_PPSJITTER | STA_PPSWANDER \
 108     | STA_PPSERROR | STA_CLOCKERR | STA_NANO | STA_MODE | STA_CLK)
 109
 110 #endif /* bits/timex.h */