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Groups > linux.kernel > #1599573

[PATCH net-next 3/4] net-next: ethernet: mediatek: add CDM able to recognize the tag for DSA

From <sean.wang@mediatek.com>
Newsgroups linux.kernel
Subject [PATCH net-next 3/4] net-next: ethernet: mediatek: add CDM able to recognize the tag for DSA
Date 2017-03-13 17:20 +0100
Message-ID <tkARs-34n-39@gated-at.bofh.it> (permalink)
References <tkARr-34n-13@gated-at.bofh.it>
Organization linux.* mail to news gateway

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From: Sean Wang <sean.wang@mediatek.com>

Allowing CDM can recognize these packets with carrying port-distinguishing
tag when CONFIG_NET_DSA_TAG_MTK is enabled. Otherwise, these packets will
be dropped by CDM ingress.

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 | 8 ++++++++
 drivers/net/ethernet/mediatek/mtk_eth_soc.h | 5 +++++
 2 files changed, 13 insertions(+)

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 3dd8788..19944e0 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -1848,6 +1848,14 @@ 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));
 
+#if defined(CONFIG_NET_DSA_TAG_MTK)
+	/* Tell CDMQ to parse the MTK special tag from CPU  */
+	/* QDMA Tx Use CDMQ */
+	u32 val2 = mtk_r32(eth, MTK_CDMQ_IG_CTRL);
+
+	mtk_w32(eth, val2 | MTK_CDMQ_STAG_EN, MTK_CDMQ_IG_CTRL);
+#endif
+
 	/* 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..79606db 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -70,11 +70,16 @@
 /* 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
 
 /* GDM Exgress Control Register */
 #define MTK_GDMA_FWD_CFG(x)	(0x500 + (x * 0x1000))
+#define MTK_GDMA_STAG_EN	BIT(24)
 #define MTK_GDMA_ICS_EN		BIT(22)
 #define MTK_GDMA_TCS_EN		BIT(21)
 #define MTK_GDMA_UCS_EN		BIT(20)
-- 
1.9.1

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Thread

[PATCH net-next 0/4] net-next: dsa: add Mediatek MT7530 support <sean.wang@mediatek.com> - 2017-03-13 17:20 +0100
  [PATCH net-next 2/4] net-next: dsa: add Mediatek tag RX/TX handler <sean.wang@mediatek.com> - 2017-03-13 17:20 +0100
    Re: [PATCH net-next 2/4] net-next: dsa: add Mediatek tag RX/TX  handler Andrew Lunn <andrew@lunn.ch> - 2017-03-13 17:40 +0100
    Re: [PATCH net-next 2/4] net-next: dsa: add Mediatek tag RX/TX  handler Florian Fainelli <f.fainelli@gmail.com> - 2017-03-13 17:50 +0100
      Re: [PATCH net-next 2/4] net-next: dsa: add Mediatek tag RX/TX  handler Sean Wang <sean.wang@mediatek.com> - 2017-03-14 07:20 +0100
    Re: [PATCH net-next 2/4] net-next: dsa: add Mediatek tag RX/TX handler Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2017-03-13 18:10 +0100
      Re: [PATCH net-next 2/4] net-next: dsa: add Mediatek tag RX/TX  handler Sean Wang <sean.wang@mediatek.com> - 2017-03-14 07:30 +0100
        Re: [PATCH net-next 2/4] net-next: dsa: add Mediatek tag RX/TX handler Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2017-03-14 14:50 +0100
  [PATCH net-next 3/4] net-next: ethernet: mediatek: add CDM able to recognize the tag for DSA <sean.wang@mediatek.com> - 2017-03-13 17:20 +0100
    Re: [PATCH net-next 3/4] net-next: ethernet: mediatek: add CDM able  to recognize the tag for DSA Andrew Lunn <andrew@lunn.ch> - 2017-03-13 17:40 +0100
    Re: [PATCH net-next 3/4] net-next: ethernet: mediatek: add CDM able  to recognize the tag for DSA Florian Fainelli <f.fainelli@gmail.com> - 2017-03-13 17:50 +0100
  Re: [PATCH net-next 4/4] net-next: dsa: add dsa support for Mediatek  MT7530 switch Andrew Lunn <andrew@lunn.ch> - 2017-03-13 17:50 +0100
  Re: [PATCH net-next 0/4] net-next: dsa: add Mediatek MT7530 support John Crispin <john@phrozen.org> - 2017-03-13 18:00 +0100
  Re: [PATCH net-next 4/4] net-next: dsa: add dsa support for Mediatek  MT7530 switch Andrew Lunn <andrew@lunn.ch> - 2017-03-14 00:20 +0100
    Re: [PATCH net-next 4/4] net-next: dsa: add dsa support for  Mediatek MT7530 switch Sean Wang <sean.wang@mediatek.com> - 2017-03-14 08:10 +0100

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