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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | #ifndef _ASMi386_TIMER_H |
| 2 | #define _ASMi386_TIMER_H |
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| 3 | |||
| 4 | /** |
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| 5 | * struct timer_ops - used to define a timer source |
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| 6 | * |
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| 7 | * @init: Probes and initializes the timer. Takes clock= override |
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| 8 | * string as an argument. Returns 0 on success, anything else on failure. |
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| 9 | * @mark_offset: called by the timer interrupt |
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| 10 | * @get_offset: called by gettimeofday(). Returns the number of ms since the |
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| 11 | * last timer intruupt. |
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| 12 | */ |
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| 13 | struct timer_opts{ |
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| 14 | int (*init)(char *override); |
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| 15 | void (*mark_offset)(void); |
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| 16 | unsigned long (*get_offset)(void); |
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| 17 | unsigned long long (*monotonic_clock)(void); |
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| 18 | void (*delay)(unsigned long); |
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| 19 | }; |
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| 20 | |||
| 21 | #define TICK_SIZE (tick_nsec / 1000) |
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| 22 | |||
| 23 | extern struct timer_opts* select_timer(void); |
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| 24 | extern void clock_fallback(void); |
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| 25 | |||
| 26 | /* Modifiers for buggy PIT handling */ |
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| 27 | |||
| 28 | extern int pit_latch_buggy; |
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| 29 | |||
| 30 | extern struct timer_opts *cur_timer; |
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| 31 | extern int timer_ack; |
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| 32 | |||
| 33 | /* list of externed timers */ |
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| 34 | extern struct timer_opts timer_none; |
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| 35 | extern struct timer_opts timer_pit; |
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| 36 | extern struct timer_opts timer_tsc; |
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| 37 | #ifdef CONFIG_X86_CYCLONE_TIMER |
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| 38 | extern struct timer_opts timer_cyclone; |
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| 39 | #endif |
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| 40 | |||
| 41 | extern unsigned long calibrate_tsc(void); |
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| 42 | #ifdef CONFIG_HPET_TIMER |
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| 43 | extern struct timer_opts timer_hpet; |
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| 44 | extern unsigned long calibrate_tsc_hpet(unsigned long *tsc_hpet_quotient_ptr); |
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| 45 | #endif |
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| 46 | |||
| 47 | #endif |