[dpdk-dev,v9,17/22] net/dpaa2: enable stashing for LS2088A devices

Message ID 1489756124-10805-18-git-send-email-hemant.agrawal@nxp.com
State Superseded
Delegated to: Ferruh Yigit
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Commit Message

Hemant Agrawal March 17, 2017, 1:08 p.m.
As the hardware determines which core will process which packet,
performance is boosted by direct cache warming/stashing as well
as by providing biasing for core-to-flow affinity, which ensures
that flow-specific data structures can remain in the core’s cache.

This patch enables the one cache line data stashing for packet
annotation data and packet context

Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
---
 drivers/net/dpaa2/dpaa2_ethdev.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

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diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c b/drivers/net/dpaa2/dpaa2_ethdev.c
index 9a60777..16baaf0 100644
--- a/drivers/net/dpaa2/dpaa2_ethdev.c
+++ b/drivers/net/dpaa2/dpaa2_ethdev.c
@@ -277,6 +277,17 @@ 
 	options = options | DPNI_QUEUE_OPT_USER_CTX;
 	cfg.user_context = (uint64_t)(dpaa2_q);
 
+	/*if ls2088 or rev2 device, enable the stashing */
+	if ((qbman_get_version() & 0xFFFF0000) > QMAN_REV_4000) {
+		options |= DPNI_QUEUE_OPT_FLC;
+		cfg.flc.stash_control = true;
+		cfg.flc.value &= 0xFFFFFFFFFFFFFFC0;
+		/* 00 00 00 - last 6 bit represent annotation, context stashing,
+		 * data stashing setting 01 01 00 (0x14) to enable
+		 * 1 line annotation, 1 line context
+		 */
+		cfg.flc.value |= 0x14;
+	}
 	ret = dpni_set_queue(dpni, CMD_PRI_LOW, priv->token, DPNI_QUEUE_RX,
 			     dpaa2_q->tc_index, flow_id, options, &cfg);
 	if (ret) {