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authorVince Bridgers <vbridger@opensource.altera.com>2015-04-15 11:17:41 -0500
committerDavid S. Miller <davem@davemloft.net>2015-04-16 13:58:42 -0400
commit545d655ebbea65986cb762905b81bff54f42eb6d (patch)
treee9436f45f4129cc44abf2fbe771ad20c25d18deb
parente7877f52fd4a8d7012f9b0faecc047a50c132a79 (diff)
downloadlinux-stericsson-545d655ebbea65986cb762905b81bff54f42eb6d.tar.gz
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>
-rw-r--r--drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
index 0adcf73cf722..371a669d69fd 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
@@ -201,7 +201,10 @@ static void dwmac1000_flow_ctrl(struct mac_device_info *hw, unsigned int duplex,
unsigned int fc, unsigned int pause_time)
{
void __iomem *ioaddr = hw->pcsr;
- unsigned int flow = 0;
+ /* Set flow such that DZPQ in Mac Register 6 is 0,
+ * and unicast pause detect is enabled.
+ */
+ unsigned int flow = GMAC_FLOW_CTRL_UP;
pr_debug("GMAC Flow-Control:\n");
if (fc & FLOW_RX) {