diff mbox

[net-next,v2,3/5] net-next: ethernet: mediatek: add CDM able to recognize the tag for DSA

Message ID 1490088910-19405-4-git-send-email-sean.wang@mediatek.com (mailing list archive)
State New, archived
Headers show

Commit Message

Sean Wang March 21, 2017, 9:35 a.m. UTC 
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 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>
---
 drivers/net/ethernet/mediatek/mtk_eth_soc.c | 6 ++++++
 drivers/net/ethernet/mediatek/mtk_eth_soc.h | 4 ++++
 2 files changed, 10 insertions(+)

Comments

Andrew Lunn March 22, 2017, 5:43 p.m. UTC | #1 
On Tue, Mar 21, 2017 at 05:35:08PM +0800, sean.wang@mediatek.com wrote:
> 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 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>

    Andrew
Florian Fainelli March 22, 2017, 6:23 p.m. UTC | #2 
On 03/21/2017 02:35 AM, sean.wang@mediatek.com wrote:
> 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 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: Florian Fainelli <f.fainelli@gmail.com>
diff mbox

Patch

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