DMA library has a function to get DMA device based on device name but
there is no function to get DMA device using device id.
Added a function that lookup for the dma device using device id and
returns the pointer to the same.
Signed-off-by: Amit Prakash Shukla <amitpraka...@marvell.com>
---
v2:
- Dropped patch with dma event op structure.
- Resolved review suggestions.
lib/dmadev/rte_dmadev.c | 12 ++++++++++++
lib/dmadev/rte_dmadev_pmd.h | 15 +++++++++++++++
lib/dmadev/version.map | 1 +
3 files changed, 28 insertions(+)
diff --git a/lib/dmadev/rte_dmadev.c b/lib/dmadev/rte_dmadev.c
index bf7d5ec519..d82464f0ca 100644
--- a/lib/dmadev/rte_dmadev.c
+++ b/lib/dmadev/rte_dmadev.c
@@ -121,6 +121,18 @@ dma_find_by_name(const char *name)
return NULL;
}
+struct rte_dma_dev*
+rte_dma_pmd_dev_get(uint8_t dev_id)
+{
+ if (rte_dma_devices == NULL || dev_id >= dma_devices_max)
+ return NULL;
+
+ if (rte_dma_devices[dev_id].state == RTE_DMA_DEV_UNUSED)
+ return NULL;
+
+ return &rte_dma_devices[dev_id];
+}
+
static void dma_fp_object_dummy(struct rte_dma_fp_object *obj);
static int
diff --git a/lib/dmadev/rte_dmadev_pmd.h b/lib/dmadev/rte_dmadev_pmd.h
index c61cedfb23..b1f50c3931 100644
--- a/lib/dmadev/rte_dmadev_pmd.h
+++ b/lib/dmadev/rte_dmadev_pmd.h
@@ -167,6 +167,21 @@ struct rte_dma_dev *rte_dma_pmd_allocate(const char *name,
int numa_node,
__rte_internal
int rte_dma_pmd_release(const char *name);
+/**
+ * @internal
+ *
+ * Get the rte_dma_dev structure device pointer for the device.
+ *
+ * @param dev_id
+ * Device ID value to select the device structure.
+ *
+ * @return
+ * - rte_dma_dev structure pointer for the given device ID on success, NULL
+ * otherwise
+ */
+__rte_internal
+struct rte_dma_dev *rte_dma_pmd_dev_get(uint8_t dev_id);
+
#ifdef __cplusplus
}
#endif
diff --git a/lib/dmadev/version.map b/lib/dmadev/version.map
index 7031d6b335..22aaa73419 100644
--- a/lib/dmadev/version.map
+++ b/lib/dmadev/version.map
@@ -25,6 +25,7 @@ INTERNAL {
rte_dma_fp_objs;
rte_dma_pmd_allocate;
+ rte_dma_pmd_dev_get;
rte_dma_pmd_release;
local: *;
--
2.25.1
