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Commit 132f2f20 authored by Jose Abreu's avatar Jose Abreu Committed by David S. Miller
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net: stmmac: xgmac: Disable Flow Control when 1 or more queues are in AV 



When in AVB mode we need to disable flow control to prevent MAC from
pausing in TX side.

Fixes: ec6ea8e3 ("net: stmmac: Add CBS support in XGMAC2")
Signed-off-by: default avatarJose Abreu <Jose.Abreu@synopsys.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 08c1ac3b

drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c

+2 −0
Original line number Diff line number Diff line
@@ -470,6 +470,7 @@ static void dwxgmac2_enable_tso(void __iomem *ioaddr, bool en, u32 chan) 
static void dwxgmac2_qmode(void __iomem *ioaddr, u32 channel, u8 qmode)

{

	u32 value = readl(ioaddr + XGMAC_MTL_TXQ_OPMODE(channel));

	u32 flow = readl(ioaddr + XGMAC_RX_FLOW_CTRL);



	value &= ~XGMAC_TXQEN;

	if (qmode != MTL_QUEUE_AVB) {
@@ -477,6 +478,7 @@ static void dwxgmac2_qmode(void __iomem *ioaddr, u32 channel, u8 qmode) 
		writel(0, ioaddr + XGMAC_MTL_TCx_ETS_CONTROL(channel));

	} else {

		value |= 0x1 << XGMAC_TXQEN_SHIFT;

		writel(flow & (~XGMAC_RFE), ioaddr + XGMAC_RX_FLOW_CTRL);

	}



	writel(value, ioaddr +  XGMAC_MTL_TXQ_OPMODE(channel));