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8b094cd0 TG |
1 | #ifndef _LINUX_TIMEKEEPING_H |
2 | #define _LINUX_TIMEKEEPING_H | |
3 | ||
b536fd58 | 4 | #include <linux/errno.h> |
86d34732 | 5 | |
8b094cd0 TG |
6 | /* Included from linux/ktime.h */ |
7 | ||
8 | void timekeeping_init(void); | |
9 | extern int timekeeping_suspended; | |
10 | ||
11 | /* | |
12 | * Get and set timeofday | |
13 | */ | |
14 | extern void do_gettimeofday(struct timeval *tv); | |
21f7eca5 | 15 | extern int do_settimeofday64(const struct timespec64 *ts); |
86d34732 BW |
16 | extern int do_sys_settimeofday64(const struct timespec64 *tv, |
17 | const struct timezone *tz); | |
18 | static inline int do_sys_settimeofday(const struct timespec *tv, | |
19 | const struct timezone *tz) | |
20 | { | |
21 | struct timespec64 ts64; | |
22 | ||
23 | if (!tv) | |
dfc2507b JS |
24 | return do_sys_settimeofday64(NULL, tz); |
25 | ||
26 | if (!timespec_valid(tv)) | |
86d34732 BW |
27 | return -EINVAL; |
28 | ||
29 | ts64 = timespec_to_timespec64(*tv); | |
30 | return do_sys_settimeofday64(&ts64, tz); | |
31 | } | |
8b094cd0 TG |
32 | |
33 | /* | |
34 | * Kernel time accessors | |
35 | */ | |
36 | unsigned long get_seconds(void); | |
8758a240 | 37 | struct timespec64 current_kernel_time64(void); |
8b094cd0 TG |
38 | /* does not take xtime_lock */ |
39 | struct timespec __current_kernel_time(void); | |
40 | ||
8758a240 BW |
41 | static inline struct timespec current_kernel_time(void) |
42 | { | |
43 | struct timespec64 now = current_kernel_time64(); | |
44 | ||
45 | return timespec64_to_timespec(now); | |
46 | } | |
47 | ||
8b094cd0 TG |
48 | /* |
49 | * timespec based interfaces | |
50 | */ | |
334334b5 | 51 | struct timespec64 get_monotonic_coarse64(void); |
cdba2ec5 | 52 | extern void getrawmonotonic64(struct timespec64 *ts); |
d6d29896 | 53 | extern void ktime_get_ts64(struct timespec64 *ts); |
9e3680b1 | 54 | extern time64_t ktime_get_seconds(void); |
dbe7aa62 | 55 | extern time64_t ktime_get_real_seconds(void); |
d6d29896 TG |
56 | |
57 | extern int __getnstimeofday64(struct timespec64 *tv); | |
58 | extern void getnstimeofday64(struct timespec64 *tv); | |
d08c0cdd | 59 | extern void getboottime64(struct timespec64 *ts); |
d6d29896 TG |
60 | |
61 | #if BITS_PER_LONG == 64 | |
21f7eca5 | 62 | /** |
63 | * Deprecated. Use do_settimeofday64(). | |
64 | */ | |
65 | static inline int do_settimeofday(const struct timespec *ts) | |
66 | { | |
67 | return do_settimeofday64(ts); | |
68 | } | |
69 | ||
d6d29896 TG |
70 | static inline int __getnstimeofday(struct timespec *ts) |
71 | { | |
72 | return __getnstimeofday64(ts); | |
73 | } | |
74 | ||
75 | static inline void getnstimeofday(struct timespec *ts) | |
76 | { | |
77 | getnstimeofday64(ts); | |
78 | } | |
79 | ||
80 | static inline void ktime_get_ts(struct timespec *ts) | |
81 | { | |
82 | ktime_get_ts64(ts); | |
83 | } | |
84 | ||
85 | static inline void ktime_get_real_ts(struct timespec *ts) | |
86 | { | |
87 | getnstimeofday64(ts); | |
88 | } | |
89 | ||
cdba2ec5 JS |
90 | static inline void getrawmonotonic(struct timespec *ts) |
91 | { | |
92 | getrawmonotonic64(ts); | |
93 | } | |
94 | ||
334334b5 JS |
95 | static inline struct timespec get_monotonic_coarse(void) |
96 | { | |
97 | return get_monotonic_coarse64(); | |
98 | } | |
d08c0cdd JS |
99 | |
100 | static inline void getboottime(struct timespec *ts) | |
101 | { | |
102 | return getboottime64(ts); | |
103 | } | |
d6d29896 | 104 | #else |
21f7eca5 | 105 | /** |
106 | * Deprecated. Use do_settimeofday64(). | |
107 | */ | |
108 | static inline int do_settimeofday(const struct timespec *ts) | |
109 | { | |
110 | struct timespec64 ts64; | |
111 | ||
112 | ts64 = timespec_to_timespec64(*ts); | |
113 | return do_settimeofday64(&ts64); | |
114 | } | |
115 | ||
d6d29896 TG |
116 | static inline int __getnstimeofday(struct timespec *ts) |
117 | { | |
118 | struct timespec64 ts64; | |
119 | int ret = __getnstimeofday64(&ts64); | |
120 | ||
121 | *ts = timespec64_to_timespec(ts64); | |
122 | return ret; | |
123 | } | |
124 | ||
125 | static inline void getnstimeofday(struct timespec *ts) | |
126 | { | |
127 | struct timespec64 ts64; | |
128 | ||
129 | getnstimeofday64(&ts64); | |
130 | *ts = timespec64_to_timespec(ts64); | |
131 | } | |
132 | ||
133 | static inline void ktime_get_ts(struct timespec *ts) | |
134 | { | |
135 | struct timespec64 ts64; | |
136 | ||
137 | ktime_get_ts64(&ts64); | |
138 | *ts = timespec64_to_timespec(ts64); | |
139 | } | |
140 | ||
141 | static inline void ktime_get_real_ts(struct timespec *ts) | |
142 | { | |
143 | struct timespec64 ts64; | |
144 | ||
145 | getnstimeofday64(&ts64); | |
146 | *ts = timespec64_to_timespec(ts64); | |
147 | } | |
cdba2ec5 JS |
148 | |
149 | static inline void getrawmonotonic(struct timespec *ts) | |
150 | { | |
151 | struct timespec64 ts64; | |
152 | ||
153 | getrawmonotonic64(&ts64); | |
154 | *ts = timespec64_to_timespec(ts64); | |
155 | } | |
334334b5 JS |
156 | |
157 | static inline struct timespec get_monotonic_coarse(void) | |
158 | { | |
159 | return timespec64_to_timespec(get_monotonic_coarse64()); | |
160 | } | |
8b094cd0 | 161 | |
d08c0cdd JS |
162 | static inline void getboottime(struct timespec *ts) |
163 | { | |
164 | struct timespec64 ts64; | |
165 | ||
166 | getboottime64(&ts64); | |
167 | *ts = timespec64_to_timespec(ts64); | |
168 | } | |
169 | #endif | |
8b094cd0 | 170 | |
d6d29896 | 171 | #define ktime_get_real_ts64(ts) getnstimeofday64(ts) |
8b094cd0 TG |
172 | |
173 | /* | |
174 | * ktime_t based interfaces | |
175 | */ | |
0077dc60 TG |
176 | |
177 | enum tk_offsets { | |
178 | TK_OFFS_REAL, | |
179 | TK_OFFS_BOOT, | |
180 | TK_OFFS_TAI, | |
181 | TK_OFFS_MAX, | |
182 | }; | |
183 | ||
8b094cd0 | 184 | extern ktime_t ktime_get(void); |
0077dc60 | 185 | extern ktime_t ktime_get_with_offset(enum tk_offsets offs); |
9a6b5197 | 186 | extern ktime_t ktime_mono_to_any(ktime_t tmono, enum tk_offsets offs); |
f519b1a2 | 187 | extern ktime_t ktime_get_raw(void); |
6374f912 | 188 | extern u32 ktime_get_resolution_ns(void); |
8b094cd0 | 189 | |
f5264d5d TG |
190 | /** |
191 | * ktime_get_real - get the real (wall-) time in ktime_t format | |
192 | */ | |
193 | static inline ktime_t ktime_get_real(void) | |
194 | { | |
195 | return ktime_get_with_offset(TK_OFFS_REAL); | |
196 | } | |
197 | ||
b82c817e TG |
198 | /** |
199 | * ktime_get_boottime - Returns monotonic time since boot in ktime_t format | |
200 | * | |
201 | * This is similar to CLOCK_MONTONIC/ktime_get, but also includes the | |
202 | * time spent in suspend. | |
203 | */ | |
204 | static inline ktime_t ktime_get_boottime(void) | |
205 | { | |
206 | return ktime_get_with_offset(TK_OFFS_BOOT); | |
207 | } | |
208 | ||
afab07c0 TG |
209 | /** |
210 | * ktime_get_clocktai - Returns the TAI time of day in ktime_t format | |
211 | */ | |
212 | static inline ktime_t ktime_get_clocktai(void) | |
213 | { | |
214 | return ktime_get_with_offset(TK_OFFS_TAI); | |
215 | } | |
216 | ||
9a6b5197 TG |
217 | /** |
218 | * ktime_mono_to_real - Convert monotonic time to clock realtime | |
219 | */ | |
220 | static inline ktime_t ktime_mono_to_real(ktime_t mono) | |
221 | { | |
222 | return ktime_mono_to_any(mono, TK_OFFS_REAL); | |
223 | } | |
224 | ||
897994e3 TG |
225 | static inline u64 ktime_get_ns(void) |
226 | { | |
227 | return ktime_to_ns(ktime_get()); | |
228 | } | |
229 | ||
230 | static inline u64 ktime_get_real_ns(void) | |
231 | { | |
232 | return ktime_to_ns(ktime_get_real()); | |
233 | } | |
234 | ||
235 | static inline u64 ktime_get_boot_ns(void) | |
236 | { | |
237 | return ktime_to_ns(ktime_get_boottime()); | |
238 | } | |
239 | ||
fe5fba05 PZ |
240 | static inline u64 ktime_get_tai_ns(void) |
241 | { | |
242 | return ktime_to_ns(ktime_get_clocktai()); | |
243 | } | |
244 | ||
f519b1a2 TG |
245 | static inline u64 ktime_get_raw_ns(void) |
246 | { | |
247 | return ktime_to_ns(ktime_get_raw()); | |
248 | } | |
249 | ||
4396e058 | 250 | extern u64 ktime_get_mono_fast_ns(void); |
f09cb9a1 | 251 | extern u64 ktime_get_raw_fast_ns(void); |
4396e058 | 252 | |
48f18fd6 TG |
253 | /* |
254 | * Timespec interfaces utilizing the ktime based ones | |
255 | */ | |
256 | static inline void get_monotonic_boottime(struct timespec *ts) | |
257 | { | |
258 | *ts = ktime_to_timespec(ktime_get_boottime()); | |
259 | } | |
260 | ||
2e0c78ee JS |
261 | static inline void get_monotonic_boottime64(struct timespec64 *ts) |
262 | { | |
263 | *ts = ktime_to_timespec64(ktime_get_boottime()); | |
264 | } | |
265 | ||
61edec81 TG |
266 | static inline void timekeeping_clocktai(struct timespec *ts) |
267 | { | |
268 | *ts = ktime_to_timespec(ktime_get_clocktai()); | |
269 | } | |
270 | ||
8b094cd0 TG |
271 | /* |
272 | * RTC specific | |
273 | */ | |
0fa88cb4 XP |
274 | extern bool timekeeping_rtc_skipsuspend(void); |
275 | extern bool timekeeping_rtc_skipresume(void); | |
276 | ||
04d90890 | 277 | extern void timekeeping_inject_sleeptime64(struct timespec64 *delta); |
278 | ||
8b094cd0 TG |
279 | /* |
280 | * PPS accessor | |
281 | */ | |
071eee45 AB |
282 | extern void ktime_get_raw_and_real_ts64(struct timespec64 *ts_raw, |
283 | struct timespec64 *ts_real); | |
8b094cd0 | 284 | |
9da0f49c CH |
285 | /* |
286 | * struct system_time_snapshot - simultaneous raw/real time capture with | |
287 | * counter value | |
288 | * @cycles: Clocksource counter value to produce the system times | |
289 | * @real: Realtime system time | |
290 | * @raw: Monotonic raw system time | |
2c756feb CH |
291 | * @clock_was_set_seq: The sequence number of clock was set events |
292 | * @cs_was_changed_seq: The sequence number of clocksource change events | |
9da0f49c CH |
293 | */ |
294 | struct system_time_snapshot { | |
295 | cycle_t cycles; | |
296 | ktime_t real; | |
297 | ktime_t raw; | |
2c756feb CH |
298 | unsigned int clock_was_set_seq; |
299 | u8 cs_was_changed_seq; | |
9da0f49c CH |
300 | }; |
301 | ||
8006c245 CH |
302 | /* |
303 | * struct system_device_crosststamp - system/device cross-timestamp | |
304 | * (syncronized capture) | |
305 | * @device: Device time | |
306 | * @sys_realtime: Realtime simultaneous with device time | |
307 | * @sys_monoraw: Monotonic raw simultaneous with device time | |
308 | */ | |
309 | struct system_device_crosststamp { | |
310 | ktime_t device; | |
311 | ktime_t sys_realtime; | |
312 | ktime_t sys_monoraw; | |
313 | }; | |
314 | ||
315 | /* | |
316 | * struct system_counterval_t - system counter value with the pointer to the | |
317 | * corresponding clocksource | |
318 | * @cycles: System counter value | |
319 | * @cs: Clocksource corresponding to system counter value. Used by | |
320 | * timekeeping code to verify comparibility of two cycle values | |
321 | */ | |
322 | struct system_counterval_t { | |
323 | cycle_t cycles; | |
324 | struct clocksource *cs; | |
325 | }; | |
326 | ||
327 | /* | |
328 | * Get cross timestamp between system clock and device clock | |
329 | */ | |
330 | extern int get_device_system_crosststamp( | |
331 | int (*get_time_fn)(ktime_t *device_time, | |
332 | struct system_counterval_t *system_counterval, | |
333 | void *ctx), | |
334 | void *ctx, | |
2c756feb | 335 | struct system_time_snapshot *history, |
8006c245 CH |
336 | struct system_device_crosststamp *xtstamp); |
337 | ||
9da0f49c CH |
338 | /* |
339 | * Simultaneously snapshot realtime and monotonic raw clocks | |
340 | */ | |
341 | extern void ktime_get_snapshot(struct system_time_snapshot *systime_snapshot); | |
342 | ||
8b094cd0 TG |
343 | /* |
344 | * Persistent clock related interfaces | |
345 | */ | |
8b094cd0 TG |
346 | extern int persistent_clock_is_local; |
347 | ||
8b094cd0 | 348 | extern void read_persistent_clock(struct timespec *ts); |
2ee96632 | 349 | extern void read_persistent_clock64(struct timespec64 *ts); |
9a806ddb | 350 | extern void read_boot_clock64(struct timespec64 *ts); |
8b094cd0 | 351 | extern int update_persistent_clock(struct timespec now); |
3c00a1fe | 352 | extern int update_persistent_clock64(struct timespec64 now); |
8b094cd0 TG |
353 | |
354 | ||
355 | #endif |