[dpdk-dev] [PATCH 07/11] bus/fslmc: disable annotation prefetch for LX2

[Shreyansh Jain <shreyansh.jain@nxp.com>]

From: Nipun Gupta <nipun.gupta@nxp.com>

In case of LX2 we get parse result summary in FD. We do not need to
prefetch and read the annotation to fetch the parse results.

Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
DPDK-1404
---
 drivers/net/dpaa2/dpaa2_rxtx.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/net/dpaa2/dpaa2_rxtx.c b/drivers/net/dpaa2/dpaa2_rxtx.c
index 89cfd2929..953fed2ad 100644
--- a/drivers/net/dpaa2/dpaa2_rxtx.c
+++ b/drivers/net/dpaa2/dpaa2_rxtx.c
@@ -554,10 +554,12 @@ dpaa2_dev_prefetch_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
 		}
 		fd = qbman_result_DQ_fd(dq_storage);
 
-		next_fd = qbman_result_DQ_fd(dq_storage + 1);
-		/* Prefetch Annotation address for the parse results */
-		rte_prefetch0((void *)(size_t)(DPAA2_GET_FD_ADDR(next_fd)
-				+ DPAA2_FD_PTA_SIZE + 16));
+		if (dpaa2_svr_family != SVR_LX2160A) {
+			next_fd = qbman_result_DQ_fd(dq_storage + 1);
+			/* Prefetch Annotation address for the parse results */
+			rte_prefetch0((void *)(size_t)(DPAA2_GET_FD_ADDR(
+				      next_fd) + DPAA2_FD_PTA_SIZE + 16));
+		}
 
 		if (unlikely(DPAA2_FD_GET_FORMAT(fd) == qbman_fd_sg))
 			bufs[num_rx] = eth_sg_fd_to_mbuf(fd);
-- 
2.17.1