| #ifndef _ASMi386_TIMER_H |
| #define _ASMi386_TIMER_H |
| |
| /** |
| * struct timer_ops - used to define a timer source |
| * |
| * @init: Probes and initializes the timer. Takes clock= override |
| * string as an argument. Returns 0 on success, anything else on failure. |
| * @mark_offset: called by the timer interrupt |
| * @get_offset: called by gettimeofday(). Returns the number of ms since the |
| * last timer intruupt. |
| */ |
| struct timer_opts{ |
| char* name; |
| int (*init)(char *override); |
| void (*mark_offset)(void); |
| unsigned long (*get_offset)(void); |
| unsigned long long (*monotonic_clock)(void); |
| void (*delay)(unsigned long); |
| }; |
| |
| #define TICK_SIZE (tick_nsec / 1000) |
| |
| extern struct timer_opts* select_timer(void); |
| extern void clock_fallback(void); |
| |
| /* Modifiers for buggy PIT handling */ |
| |
| extern int pit_latch_buggy; |
| |
| extern struct timer_opts *cur_timer; |
| extern int timer_ack; |
| |
| /* list of externed timers */ |
| extern struct timer_opts timer_none; |
| extern struct timer_opts timer_pit; |
| extern struct timer_opts timer_tsc; |
| #ifdef CONFIG_X86_CYCLONE_TIMER |
| extern struct timer_opts timer_cyclone; |
| #endif |
| |
| extern unsigned long calibrate_tsc(void); |
| #ifdef CONFIG_HPET_TIMER |
| extern struct timer_opts timer_hpet; |
| extern unsigned long calibrate_tsc_hpet(unsigned long *tsc_hpet_quotient_ptr); |
| #endif |
| |
| #endif |
