stmmac: Enable unicast pause frame detect in GMAC Register 6
Unicast pause frame detect was not being enabled for the Synopsys stmmac. This patch sets Unicast pause frame detect in MAC register 6 so that pause frame detection by the stmmac conforms to IEEE 802.3, Annex 31B.3.3 Receive Operation - Specifically, a MAC shall respond to pause frames containing either the reserved multicast address or the unique physical address associated with this station. Signed-off-by: Vince Bridgers <vbridger@opensource.altera.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -201,7 +201,10 @@ static void dwmac1000_flow_ctrl(struct mac_device_info *hw, unsigned int duplex,
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unsigned int fc, unsigned int pause_time)
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{
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void __iomem *ioaddr = hw->pcsr;
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unsigned int flow = 0;
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/* Set flow such that DZPQ in Mac Register 6 is 0,
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* and unicast pause detect is enabled.
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*/
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unsigned int flow = GMAC_FLOW_CTRL_UP;
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pr_debug("GMAC Flow-Control:\n");
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if (fc & FLOW_RX) {
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