When testing dmadev drivers, it is useful to have the HW device in a known
state. This patch adds the implementation of the function which will wait
for the device to be idle (all jobs completed) before proceeding.
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
---
drivers/dma/idxd/idxd_bus.c | 1 +
drivers/dma/idxd/idxd_common.c | 10 ++++++++++
drivers/dma/idxd/idxd_internal.h | 1 +
drivers/dma/idxd/idxd_pci.c | 1 +
4 files changed, 13 insertions(+)
@@ -100,6 +100,7 @@ static const struct rte_dmadev_ops idxd_vdev_ops = {
.dev_info_get = idxd_info_get,
.stats_get = idxd_stats_get,
.stats_reset = idxd_stats_reset,
+ .vchan_idle = idxd_vchan_idle,
};
static void *
@@ -165,6 +165,16 @@ get_comp_status(struct idxd_completion *c)
}
}
+int
+idxd_vchan_idle(const struct rte_dmadev *dev, uint16_t vchan __rte_unused)
+{
+ struct idxd_dmadev *idxd = dev->dev_private;
+ uint16_t last_batch_write = idxd->batch_idx_write == 0 ? idxd->max_batches :
+ idxd->batch_idx_write - 1;
+
+ return (idxd->batch_comp_ring[last_batch_write].status != 0);
+}
+
static __rte_always_inline int
batch_ok(struct idxd_dmadev *idxd, uint8_t max_ops, enum rte_dma_status_code *status)
{
@@ -98,5 +98,6 @@ uint16_t idxd_completed_status(struct rte_dmadev *dev, uint16_t qid __rte_unused
int idxd_stats_get(const struct rte_dmadev *dev, uint16_t vchan,
struct rte_dmadev_stats *stats, uint32_t stats_sz);
int idxd_stats_reset(struct rte_dmadev *dev, uint16_t vchan);
+int idxd_vchan_idle(const struct rte_dmadev *dev, uint16_t vchan);
#endif /* _IDXD_INTERNAL_H_ */
@@ -118,6 +118,7 @@ static const struct rte_dmadev_ops idxd_pci_ops = {
.stats_reset = idxd_stats_reset,
.dev_start = idxd_pci_dev_start,
.dev_stop = idxd_pci_dev_stop,
+ .vchan_idle = idxd_vchan_idle,
};
/* each portal uses 4 x 4k pages */