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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-i386/timer.h | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-i386/timer.h')
-rw-r--r-- | include/asm-i386/timer.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/include/asm-i386/timer.h b/include/asm-i386/timer.h new file mode 100644 index 0000000..40c54f6 --- /dev/null +++ b/include/asm-i386/timer.h @@ -0,0 +1,64 @@ +#ifndef _ASMi386_TIMER_H +#define _ASMi386_TIMER_H +#include <linux/init.h> + +/** + * struct timer_ops - used to define a timer source + * + * @name: name of the timer. + * @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 microseconds + * since the last timer interupt. + * @monotonic_clock: returns the number of nanoseconds since the init of the + * timer. + * @delay: delays this many clock cycles. + */ +struct timer_opts { + char* name; + void (*mark_offset)(void); + unsigned long (*get_offset)(void); + unsigned long long (*monotonic_clock)(void); + void (*delay)(unsigned long); +}; + +struct init_timer_opts { + int (*init)(char *override); + struct timer_opts *opts; +}; + +#define TICK_SIZE (tick_nsec / 1000) + +extern struct timer_opts* __init select_timer(void); +extern void clock_fallback(void); +void setup_pit_timer(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 init_timer_opts timer_pit_init; +extern struct init_timer_opts timer_tsc_init; +#ifdef CONFIG_X86_CYCLONE_TIMER +extern struct init_timer_opts timer_cyclone_init; +#endif + +extern unsigned long calibrate_tsc(void); +extern void init_cpu_khz(void); +#ifdef CONFIG_HPET_TIMER +extern struct init_timer_opts timer_hpet_init; +extern unsigned long calibrate_tsc_hpet(unsigned long *tsc_hpet_quotient_ptr); +#endif + +#ifdef CONFIG_X86_PM_TIMER +extern struct init_timer_opts timer_pmtmr_init; +#endif +#endif |