[PATCHv4 29/33] net/dpaa2: enable stashing for LS2088A devices
From: Hemant Agrawal <hidden>
Date: 2017-01-17 13:20:49
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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 <redacted> --- drivers/net/dpaa2/dpaa2_ethdev.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c b/drivers/net/dpaa2/dpaa2_ethdev.c
index a9d5f10..2cf395f 100644
--- a/drivers/net/dpaa2/dpaa2_ethdev.c
+++ b/drivers/net/dpaa2/dpaa2_ethdev.c@@ -278,6 +278,17 @@ 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) {
--
1.9.1