For each dmadev instance, perform some basic copy tests to validate that
functionality.
Signed-off-by: Bruce Richardson <[email protected]>
---
<snip>
+static inline void
+await_hw(int dev_id, uint16_t vchan)
+{
+ int idle = rte_dmadev_vchan_idle(dev_id, vchan);
+ if (idle < 0) {
+ /* for drivers that don't support this op, just sleep for 25
microseconds */
+ usleep(25);
+ return;
+ }
+
+ /* for those that do, *max* end time is one second from now, but all
should be faster */
+ const uint64_t end_cycles = rte_get_timer_cycles() + rte_get_timer_hz();
+ while (!idle && rte_get_timer_cycles() < end_cycles) {
+ rte_pause();
+ idle = rte_dmadev_vchan_idle(dev_id, vchan);
+ }
+}
The new DMA IOAT driver works fine with this function and will not be
affected by an increase in timeout time as suggested by Jerin.
Reviewed-by: Conor Walsh <[email protected]>
