diff options
Diffstat (limited to 'include/uapi/linux/timex.h')
-rw-r--r-- | include/uapi/linux/timex.h | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/include/uapi/linux/timex.h b/include/uapi/linux/timex.h new file mode 100644 index 000000000000..a7ea81f13711 --- /dev/null +++ b/include/uapi/linux/timex.h | |||
@@ -0,0 +1,166 @@ | |||
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 | *****************************************************************************/ | ||
16 | |||
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 _UAPI_LINUX_TIMEX_H | ||
54 | #define _UAPI_LINUX_TIMEX_H | ||
55 | |||
56 | #include <linux/time.h> | ||
57 | |||
58 | #define NTP_API 4 /* NTP API version */ | ||
59 | |||
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 | long offset; /* time offset (usec) */ | ||
67 | long freq; /* frequency offset (scaled ppm) */ | ||
68 | long maxerror; /* maximum error (usec) */ | ||
69 | long esterror; /* estimated error (usec) */ | ||
70 | int status; /* clock command/status */ | ||
71 | long constant; /* pll time constant */ | ||
72 | long precision; /* clock precision (usec) (read only) */ | ||
73 | long tolerance; /* clock frequency tolerance (ppm) | ||
74 | * (read only) | ||
75 | */ | ||
76 | struct timeval time; /* (read only, except for ADJ_SETOFFSET) */ | ||
77 | long tick; /* (modified) usecs between clock ticks */ | ||
78 | |||
79 | long ppsfreq; /* pps frequency (scaled ppm) (ro) */ | ||
80 | long jitter; /* pps jitter (us) (ro) */ | ||
81 | int shift; /* interval duration (s) (shift) (ro) */ | ||
82 | long stabil; /* pps stability (scaled ppm) (ro) */ | ||
83 | long jitcnt; /* jitter limit exceeded (ro) */ | ||
84 | long calcnt; /* calibration intervals (ro) */ | ||
85 | long errcnt; /* calibration errors (ro) */ | ||
86 | long stbcnt; /* stability limit exceeded (ro) */ | ||
87 | |||
88 | int tai; /* TAI offset (ro) */ | ||
89 | |||
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 | }; | ||
94 | |||
95 | /* | ||
96 | * Mode codes (timex.mode) | ||
97 | */ | ||
98 | #define ADJ_OFFSET 0x0001 /* time offset */ | ||
99 | #define ADJ_FREQUENCY 0x0002 /* frequency offset */ | ||
100 | #define ADJ_MAXERROR 0x0004 /* maximum time error */ | ||
101 | #define ADJ_ESTERROR 0x0008 /* estimated time error */ | ||
102 | #define ADJ_STATUS 0x0010 /* clock status */ | ||
103 | #define ADJ_TIMECONST 0x0020 /* pll time constant */ | ||
104 | #define ADJ_TAI 0x0080 /* set TAI offset */ | ||
105 | #define ADJ_SETOFFSET 0x0100 /* add 'time' to current time */ | ||
106 | #define ADJ_MICRO 0x1000 /* select microsecond resolution */ | ||
107 | #define ADJ_NANO 0x2000 /* select nanosecond resolution */ | ||
108 | #define ADJ_TICK 0x4000 /* tick value */ | ||
109 | |||
110 | #ifndef __KERNEL__ | ||
111 | #define ADJ_OFFSET_SINGLESHOT 0x8001 /* old-fashioned adjtime */ | ||
112 | #define ADJ_OFFSET_SS_READ 0xa001 /* read-only adjtime */ | ||
113 | #endif | ||
114 | |||
115 | /* NTP userland likes the MOD_ prefix better */ | ||
116 | #define MOD_OFFSET ADJ_OFFSET | ||
117 | #define MOD_FREQUENCY ADJ_FREQUENCY | ||
118 | #define MOD_MAXERROR ADJ_MAXERROR | ||
119 | #define MOD_ESTERROR ADJ_ESTERROR | ||
120 | #define MOD_STATUS ADJ_STATUS | ||
121 | #define MOD_TIMECONST ADJ_TIMECONST | ||
122 | #define MOD_TAI ADJ_TAI | ||
123 | #define MOD_MICRO ADJ_MICRO | ||
124 | #define MOD_NANO ADJ_NANO | ||
125 | |||
126 | |||
127 | /* | ||
128 | * Status codes (timex.status) | ||
129 | */ | ||
130 | #define STA_PLL 0x0001 /* enable PLL updates (rw) */ | ||
131 | #define STA_PPSFREQ 0x0002 /* enable PPS freq discipline (rw) */ | ||
132 | #define STA_PPSTIME 0x0004 /* enable PPS time discipline (rw) */ | ||
133 | #define STA_FLL 0x0008 /* select frequency-lock mode (rw) */ | ||
134 | |||
135 | #define STA_INS 0x0010 /* insert leap (rw) */ | ||
136 | #define STA_DEL 0x0020 /* delete leap (rw) */ | ||
137 | #define STA_UNSYNC 0x0040 /* clock unsynchronized (rw) */ | ||
138 | #define STA_FREQHOLD 0x0080 /* hold frequency (rw) */ | ||
139 | |||
140 | #define STA_PPSSIGNAL 0x0100 /* PPS signal present (ro) */ | ||
141 | #define STA_PPSJITTER 0x0200 /* PPS signal jitter exceeded (ro) */ | ||
142 | #define STA_PPSWANDER 0x0400 /* PPS signal wander exceeded (ro) */ | ||
143 | #define STA_PPSERROR 0x0800 /* PPS signal calibration error (ro) */ | ||
144 | |||
145 | #define STA_CLOCKERR 0x1000 /* clock hardware fault (ro) */ | ||
146 | #define STA_NANO 0x2000 /* resolution (0 = us, 1 = ns) (ro) */ | ||
147 | #define STA_MODE 0x4000 /* mode (0 = PLL, 1 = FLL) (ro) */ | ||
148 | #define STA_CLK 0x8000 /* clock source (0 = A, 1 = B) (ro) */ | ||
149 | |||
150 | /* read-only bits */ | ||
151 | #define STA_RONLY (STA_PPSSIGNAL | STA_PPSJITTER | STA_PPSWANDER | \ | ||
152 | STA_PPSERROR | STA_CLOCKERR | STA_NANO | STA_MODE | STA_CLK) | ||
153 | |||
154 | /* | ||
155 | * Clock states (time_state) | ||
156 | */ | ||
157 | #define TIME_OK 0 /* clock synchronized, no leap second */ | ||
158 | #define TIME_INS 1 /* insert leap second */ | ||
159 | #define TIME_DEL 2 /* delete leap second */ | ||
160 | #define TIME_OOP 3 /* leap second in progress */ | ||
161 | #define TIME_WAIT 4 /* leap second has occurred */ | ||
162 | #define TIME_ERROR 5 /* clock not synchronized */ | ||
163 | #define TIME_BAD TIME_ERROR /* bw compat */ | ||
164 | |||
165 | |||
166 | #endif /* _UAPI_LINUX_TIMEX_H */ | ||