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net: stmmac: dwmac100: Add MAC loopback support 

In preparation for the addition of stmmac selftests we implement the MAC
loopback callback in dwmac100 core.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jose Abreu 2019-05-24 10:20:10 +02:00 committed by David S. Miller
parent 48435bc3b3
commit 0a05a7a315
1 changed files with 13 additions and 0 deletions
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13
drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c
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@ -160,6 +160,18 @@ static void dwmac100_pmt(struct mac_device_info *hw, unsigned long mode)
return;
}
static void dwmac100_set_mac_loopback(void __iomem *ioaddr, bool enable)
{
u32 value = readl(ioaddr + MAC_CONTROL);
if (enable)
value |= MAC_CONTROL_OM;
else
value &= ~MAC_CONTROL_OM;
writel(value, ioaddr + MAC_CONTROL);
}
const struct stmmac_ops dwmac100_ops = {
.core_init = dwmac100_core_init,
.set_mac = stmmac_set_mac,
@ -171,6 +183,7 @@ const struct stmmac_ops dwmac100_ops = {
.pmt = dwmac100_pmt,
.set_umac_addr = dwmac100_set_umac_addr,
.get_umac_addr = dwmac100_get_umac_addr,
.set_mac_loopback = dwmac100_set_mac_loopback,
};
int dwmac100_setup(struct stmmac_priv *priv)