You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
68 lines
2.5 KiB
Diff
68 lines
2.5 KiB
Diff
From patchwork Wed Mar 29 09:38:21 2017
|
|
Content-Type: text/plain; charset="utf-8"
|
|
MIME-Version: 1.0
|
|
Content-Transfer-Encoding: 7bit
|
|
Subject: [net-next, v3,
|
|
3/5] net-next: ethernet: mediatek: add CDM able to recognize the tag
|
|
for DSA
|
|
From: sean.wang@mediatek.com
|
|
X-Patchwork-Id: 9651091
|
|
Message-Id: <1490780303-18598-4-git-send-email-sean.wang@mediatek.com>
|
|
To: <andrew@lunn.ch>, <f.fainelli@gmail.com>,
|
|
<vivien.didelot@savoirfairelinux.com>, <matthias.bgg@gmail.com>,
|
|
<robh+dt@kernel.org>, <mark.rutland@arm.com>
|
|
Cc: devicetree@vger.kernel.org, Landen.Chao@mediatek.com, keyhaede@gmail.com,
|
|
netdev@vger.kernel.org, sean.wang@mediatek.com,
|
|
linux-kernel@vger.kernel.org,
|
|
linux-mediatek@lists.infradead.org, objelf@gmail.com, davem@davemloft.net
|
|
Date: Wed, 29 Mar 2017 17:38:21 +0800
|
|
|
|
From: Sean Wang <sean.wang@mediatek.com>
|
|
|
|
The patch adds the setup for allowing CDM can recognize these packets with
|
|
carrying port-distinguishing tag. Otherwise, these tagging packets will be
|
|
handled incorrectly by CDM. The setup is also working out for general
|
|
untag packets as well.
|
|
|
|
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
|
|
Signed-off-by: Landen Chao <Landen.Chao@mediatek.com>
|
|
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
|
|
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
|
|
---
|
|
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 6 ++++++
|
|
drivers/net/ethernet/mediatek/mtk_eth_soc.h | 4 ++++
|
|
2 files changed, 10 insertions(+)
|
|
|
|
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
|
|
index 9e75768..c21ed99 100644
|
|
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
|
|
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
|
|
@@ -1846,6 +1846,12 @@ static int mtk_hw_init(struct mtk_eth *eth)
|
|
/* GE2, Force 1000M/FD, FC ON */
|
|
mtk_w32(eth, MAC_MCR_FIXED_LINK, MTK_MAC_MCR(1));
|
|
|
|
+ /* Indicates CDM to parse the MTK special tag from CPU
|
|
+ * which also is working out for untag packets.
|
|
+ */
|
|
+ val = mtk_r32(eth, MTK_CDMQ_IG_CTRL);
|
|
+ mtk_w32(eth, val | MTK_CDMQ_STAG_EN, MTK_CDMQ_IG_CTRL);
|
|
+
|
|
/* Enable RX VLan Offloading */
|
|
mtk_w32(eth, 1, MTK_CDMP_EG_CTRL);
|
|
|
|
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
|
|
index 99b1c8e..996024d 100644
|
|
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
|
|
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
|
|
@@ -70,6 +70,10 @@
|
|
/* Frame Engine Interrupt Grouping Register */
|
|
#define MTK_FE_INT_GRP 0x20
|
|
|
|
+/* CDMP Ingress Control Register */
|
|
+#define MTK_CDMQ_IG_CTRL 0x1400
|
|
+#define MTK_CDMQ_STAG_EN BIT(0)
|
|
+
|
|
/* CDMP Exgress Control Register */
|
|
#define MTK_CDMP_EG_CTRL 0x404
|
|
|