]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #ifndef _ASMi386_TIMER_H |
2 | #define _ASMi386_TIMER_H | |
3 | #include <linux/init.h> | |
4 | ||
5 | /** | |
6 | * struct timer_ops - used to define a timer source | |
7 | * | |
8 | * @name: name of the timer. | |
9 | * @init: Probes and initializes the timer. Takes clock= override | |
10 | * string as an argument. Returns 0 on success, anything else | |
11 | * on failure. | |
12 | * @mark_offset: called by the timer interrupt. | |
13 | * @get_offset: called by gettimeofday(). Returns the number of microseconds | |
14 | * since the last timer interupt. | |
15 | * @monotonic_clock: returns the number of nanoseconds since the init of the | |
16 | * timer. | |
17 | * @delay: delays this many clock cycles. | |
18 | */ | |
19 | struct timer_opts { | |
20 | char* name; | |
21 | void (*mark_offset)(void); | |
22 | unsigned long (*get_offset)(void); | |
23 | unsigned long long (*monotonic_clock)(void); | |
24 | void (*delay)(unsigned long); | |
8a9e1b0f | 25 | unsigned long (*read_timer)(void); |
1da177e4 LT |
26 | }; |
27 | ||
28 | struct init_timer_opts { | |
29 | int (*init)(char *override); | |
30 | struct timer_opts *opts; | |
31 | }; | |
32 | ||
33 | #define TICK_SIZE (tick_nsec / 1000) | |
34 | ||
35 | extern struct timer_opts* __init select_timer(void); | |
36 | extern void clock_fallback(void); | |
37 | void setup_pit_timer(void); | |
38 | ||
39 | /* Modifiers for buggy PIT handling */ | |
40 | ||
41 | extern int pit_latch_buggy; | |
42 | ||
43 | extern struct timer_opts *cur_timer; | |
44 | extern int timer_ack; | |
45 | ||
46 | /* list of externed timers */ | |
47 | extern struct timer_opts timer_none; | |
48 | extern struct timer_opts timer_pit; | |
49 | extern struct init_timer_opts timer_pit_init; | |
50 | extern struct init_timer_opts timer_tsc_init; | |
51 | #ifdef CONFIG_X86_CYCLONE_TIMER | |
52 | extern struct init_timer_opts timer_cyclone_init; | |
53 | #endif | |
54 | ||
55 | extern unsigned long calibrate_tsc(void); | |
8a9e1b0f | 56 | extern unsigned long read_timer_tsc(void); |
1da177e4 | 57 | extern void init_cpu_khz(void); |
c5d28fb2 | 58 | extern int recalibrate_cpu_khz(void); |
1da177e4 LT |
59 | #ifdef CONFIG_HPET_TIMER |
60 | extern struct init_timer_opts timer_hpet_init; | |
61 | extern unsigned long calibrate_tsc_hpet(unsigned long *tsc_hpet_quotient_ptr); | |
62 | #endif | |
63 | ||
64 | #ifdef CONFIG_X86_PM_TIMER | |
65 | extern struct init_timer_opts timer_pmtmr_init; | |
66 | #endif | |
67 | #endif |