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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-i386/timer.h
Linux-2.6.12-rc2v2.6.12-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.h64
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 00000000000..40c54f69780
--- /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