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From: Gagandeep Singh <g.singh@nxp.com>
To: dev@dpdk.org,
Hemant Agrawal <hemant.agrawal@nxp.com>
Cc: Jun Yang <jun.yang@nxp.com>
Subject: [v3 11/30] dma/dpaa2: change the DMA copy return value
Date: Mon, 22 Jul 2024 22:09:11 +0530
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From: Jun Yang <jun.yang@nxp.com>
The return value of DMA copy/sg copy should be index of
descriptor copied in success.
Signed-off-by: Jun Yang <jun.yang@nxp.com>
---
drivers/dma/dpaa2/dpaa2_qdma.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/dma/dpaa2/dpaa2_qdma.c b/drivers/dma/dpaa2/dpaa2_qdma.c
index d1358b686c..b70750fede 100644
--- a/drivers/dma/dpaa2/dpaa2_qdma.c
+++ b/drivers/dma/dpaa2/dpaa2_qdma.c
@@ -605,6 +605,11 @@ dpaa2_qdma_copy_sg(void *dev_private,
return -ENOTSUP;
}
+ if (unlikely(!nb_src)) {
+ DPAA2_QDMA_ERR("No SG entry specified");
+ return -EINVAL;
+ }
+
if (unlikely(nb_src > RTE_DPAA2_QDMA_JOB_SUBMIT_MAX)) {
DPAA2_QDMA_ERR("SG entry number(%d) > MAX(%d)",
nb_src, RTE_DPAA2_QDMA_JOB_SUBMIT_MAX);
@@ -681,10 +686,13 @@ dpaa2_qdma_copy_sg(void *dev_private,
if (flags & RTE_DMA_OP_FLAG_SUBMIT) {
expected = qdma_vq->fd_idx;
ret = dpaa2_qdma_multi_eq(qdma_vq);
- if (likely(ret == expected))
- return 0;
+ if (likely(ret == expected)) {
+ qdma_vq->copy_num += nb_src;
+ return (qdma_vq->copy_num - 1) & UINT16_MAX;
+ }
} else {
- return 0;
+ qdma_vq->copy_num += nb_src;
+ return (qdma_vq->copy_num - 1) & UINT16_MAX;
}
return ret;
--
2.25.1