refactor: one more step towards arch-agnostic design

[lunaix-os.git] / lunaix-os / includes / hal / hwtimer.h

diff --git a/lunaix-os/includes/hal/hwtimer.h b/lunaix-os/includes/hal/hwtimer.h
new file mode 100644 (file)
index 0000000..efa72d8
--- /dev/null
+++ b/lunaix-os/includes/hal/hwtimer.h
@@ -0,0 +1,36 @@
+#ifndef __LUNAIX_HWTIMER_H
+#define __LUNAIX_HWTIMER_H
+
+#include <lunaix/time.h>
+#include <lunaix/types.h>
+
+typedef void (*timer_tick_cb)();
+
+struct hwtimer_context
+{
+    char* name;
+    void* data;
+
+    int (*supported)(struct hwtimer_context*);
+    void (*init)(struct hwtimer_context*, u32_t hertz, timer_tick_cb);
+    ticks_t (*systicks)();
+    ticks_t base_freq;
+    ticks_t running_freq;
+};
+
+void
+hwtimer_init(u32_t hertz, void* tick_callback);
+
+struct hwtimer_context*
+hwtimer_choose();
+
+ticks_t
+hwtimer_base_frequency();
+
+ticks_t
+hwtimer_current_systicks();
+
+ticks_t
+hwtimer_to_ticks(u32_t value, int unit);
+
+#endif /* __LUNAIX_HWTIMER_H */