Add in a function to check if a device or vchan has completed all jobs
assigned to it, without gathering in the results. This is primarily for
use in testing, to allow the hardware to be in a known-state prior to
gathering completions.
Signed-off-by: Bruce Richardson <bruce.richard...@intel.com>
---
lib/dmadev/rte_dmadev.c | 16 ++++++++++++++++
lib/dmadev/rte_dmadev.h | 21 +++++++++++++++++++++
lib/dmadev/rte_dmadev_core.h | 4 ++++
lib/dmadev/version.map | 1 +
4 files changed, 42 insertions(+)
diff --git a/lib/dmadev/rte_dmadev.c b/lib/dmadev/rte_dmadev.c
index 1c946402db..e249411631 100644
--- a/lib/dmadev/rte_dmadev.c
+++ b/lib/dmadev/rte_dmadev.c
@@ -555,3 +555,19 @@ rte_dmadev_dump(uint16_t dev_id, FILE *f)
return 0;
}
+
+int
+rte_dmadev_vchan_idle(uint16_t dev_id, uint16_t vchan)
+{
+ struct rte_dmadev *dev = &rte_dmadevices[dev_id];
+
+ RTE_DMADEV_VALID_DEV_ID_OR_ERR_RET(dev_id, -EINVAL);
+ if (vchan >= dev->data->dev_conf.nb_vchans) {
+ RTE_DMADEV_LOG(ERR,
+ "Device %u vchan %u out of range\n", dev_id, vchan);
+ return -EINVAL;
+ }
+
+ RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->vchan_idle, -ENOTSUP);
+ return (*dev->dev_ops->vchan_idle)(dev, vchan);
+}
diff --git a/lib/dmadev/rte_dmadev.h b/lib/dmadev/rte_dmadev.h
index e8f58e9213..350e7defc8 100644
--- a/lib/dmadev/rte_dmadev.h
+++ b/lib/dmadev/rte_dmadev.h
@@ -1028,6 +1028,27 @@ rte_dmadev_completed_status(uint16_t dev_id, uint16_t
vchan,
return (*dev->completed_status)(dev, vchan, nb_cpls, last_idx, status);
}
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Determine if all jobs have completed on a device channel.
+ * This function is primarily designed for testing use, as it allows a process
to check if
+ * all jobs are completed, without actually gathering completions from those
jobs.
+ *
+ * @param dev_id
+ * The identifier of the device.
+ * @param vchan
+ * The identifier of virtual DMA channel.
+ * @return
+ * 1 - if all jobs have completed and the device vchan is idle
+ * 0 - if there are still outstanding jobs yet to complete
+ * < 0 - error code indicating there was a problem calling the API
+ */
+__rte_experimental
+int
+rte_dmadev_vchan_idle(uint16_t dev_id, uint16_t vchan);
+
#ifdef __cplusplus
}
#endif
diff --git a/lib/dmadev/rte_dmadev_core.h b/lib/dmadev/rte_dmadev_core.h
index e94aa1c457..7ec5a5b572 100644
--- a/lib/dmadev/rte_dmadev_core.h
+++ b/lib/dmadev/rte_dmadev_core.h
@@ -53,6 +53,9 @@ typedef int (*rte_dmadev_stats_reset_t)(struct rte_dmadev
*dev, uint16_t vchan);
typedef int (*rte_dmadev_dump_t)(const struct rte_dmadev *dev, FILE *f);
/**< @internal Used to dump internal information. */
+typedef int (*rte_dmadev_vchan_idle_t)(const struct rte_dmadev *dev, uint16_t
vchan);
+/**< @internal Used to check if a virtual channel has finished all jobs. */
+
typedef int (*rte_dmadev_copy_t)(struct rte_dmadev *dev, uint16_t vchan,
rte_iova_t src, rte_iova_t dst,
uint32_t length, uint64_t flags);
@@ -106,6 +109,7 @@ struct rte_dmadev_ops {
rte_dmadev_stats_get_t stats_get;
rte_dmadev_stats_reset_t stats_reset;
rte_dmadev_dump_t dev_dump;
+ rte_dmadev_vchan_idle_t vchan_idle;
};
/**
diff --git a/lib/dmadev/version.map b/lib/dmadev/version.map
index 80be592713..b7e52fda3d 100644
--- a/lib/dmadev/version.map
+++ b/lib/dmadev/version.map
@@ -18,6 +18,7 @@ EXPERIMENTAL {
rte_dmadev_stats_reset;
rte_dmadev_stop;
rte_dmadev_submit;
+ rte_dmadev_vchan_idle;
rte_dmadev_vchan_setup;
local: *;
--
2.30.2
