-static u32* volatile cyclone_timer; /* Cyclone MPMC0 register */
-static u32 last_update_cyclone;
-
-static unsigned long offset_base;
-
-static unsigned long get_offset_cyclone(void)
-{
- u32 now;
- unsigned long offset;
-
- /* Read the cyclone timer */
- now = readl(cyclone_timer);
- /* .. relative to previous update*/
- offset = now - last_update_cyclone;
-
- /* convert cyclone ticks to nanoseconds */
- offset = (offset*NSEC_PER_SEC)/CYCLONE_TIMER_FREQ;
-
- /* our adjusted time in nanoseconds */
- return offset_base + offset;
-}
-
-static void update_cyclone(long delta_nsec)
-{
- u32 now;
- unsigned long offset;
-
- /* Read the cyclone timer */
- now = readl(cyclone_timer);
- /* .. relative to previous update*/
- offset = now - last_update_cyclone;
-
- /* convert cyclone ticks to nanoseconds */
- offset = (offset*NSEC_PER_SEC)/CYCLONE_TIMER_FREQ;
-
- offset += offset_base;
-
- /* Be careful about signed/unsigned comparisons here: */
- if (delta_nsec < 0 || (unsigned long) delta_nsec < offset)
- offset_base = offset - delta_nsec;
- else
- offset_base = 0;
-
- last_update_cyclone = now;
-}
-
-static void reset_cyclone(void)
-{
- offset_base = 0;
- last_update_cyclone = readl(cyclone_timer);
-}