[PATCH net-next 09/18] net: mvpp2: fix RSS register definitions

From: Maxime Chevallier
Date: Thu Jul 12 2018 - 07:54:56 EST


There is no RSS_TABLE register in PPv2 Controller. The register 0x1510
which was specified is actually named "RSS_HASH_SEL", but isn't used by
this driver at all.

Based on how this register was used, it should have been the
RXQ2RSS_TABLE register, which allows to select the RSS table that will
be used for the incoming packet.

The RSS_TABLE_POINTER is actually a field of this RXQ2RSS_TABLE
register.

Since RSS tables are actually not used by the driver for now, this
commit does not fix a runtime bug.

Signed-off-by: Maxime Chevallier <maxime.chevallier@xxxxxxxxxxx>
---
drivers/net/ethernet/marvell/mvpp2/mvpp2.h | 4 ++--
drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
index dee5231b0073..e6b182d8be5b 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
@@ -73,9 +73,9 @@
#define MVPP22_RSS_INDEX_TABLE_ENTRY(idx) (idx)
#define MVPP22_RSS_INDEX_TABLE(idx) ((idx) << 8)
#define MVPP22_RSS_INDEX_QUEUE(idx) ((idx) << 16)
-#define MVPP22_RSS_TABLE_ENTRY 0x1508
-#define MVPP22_RSS_TABLE 0x1510
+#define MVPP22_RXQ2RSS_TABLE 0x1504
#define MVPP22_RSS_TABLE_POINTER(p) (p)
+#define MVPP22_RSS_TABLE_ENTRY 0x1508
#define MVPP22_RSS_WIDTH 0x150c

/* Classifier Registers */
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c
index 4d187f30725c..fe4bcaf983b2 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c
@@ -123,7 +123,7 @@ void mvpp22_init_rss(struct mvpp2_port *port)
*/
for (i = 0; i < MVPP2_CLS_RX_QUEUES; i++) {
mvpp2_write(priv, MVPP22_RSS_INDEX, MVPP22_RSS_INDEX_QUEUE(i));
- mvpp2_write(priv, MVPP22_RSS_TABLE,
+ mvpp2_write(priv, MVPP22_RXQ2RSS_TABLE,
MVPP22_RSS_TABLE_POINTER(0));
}

--
2.11.0