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Groups > linux.kernel > #1618604 > unrolled thread
| Started by | <sean.wang@mediatek.com> |
|---|---|
| First post | 2017-04-07 10:50 +0200 |
| Last post | 2017-04-07 10:50 +0200 |
| Articles | 1 — 1 participant |
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[PATCH net-next v4 3/5] net-next: ethernet: mediatek: add CDM able to recognize the tag for DSA <sean.wang@mediatek.com> - 2017-04-07 10:50 +0200
| From | <sean.wang@mediatek.com> |
|---|---|
| Date | 2017-04-07 10:50 +0200 |
| Subject | [PATCH net-next v4 3/5] net-next: ethernet: mediatek: add CDM able to recognize the tag for DSA |
| Message-ID | <ttxKG-4On-11@gated-at.bofh.it> |
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 -- 1.9.1
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