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