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net: stmmac: dwxgmac2: Add MAC loopback support 

In preparation for the addition of stmmac selftests we implement the MAC
loopback callback in dwxgmac2 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 10:20:13 +02:00 committed by David S. Miller
parent 4ce84f4da7
commit 84c8df1649
2 changed files with 14 additions and 0 deletions
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1
drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
View File

@ -29,6 +29,7 @@
#define XGMAC_CONFIG_GPSL GENMASK(29, 16)
#define XGMAC_CONFIG_GPSL_SHIFT 16
#define XGMAC_CONFIG_S2KP BIT(11)
#define XGMAC_CONFIG_LM BIT(10)
#define XGMAC_CONFIG_IPC BIT(9)
#define XGMAC_CONFIG_JE BIT(8)
#define XGMAC_CONFIG_WD BIT(7)

13
drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
View File

@ -321,6 +321,18 @@ static void dwxgmac2_set_filter(struct mac_device_info *hw,
writel(value, ioaddr + XGMAC_PACKET_FILTER);
}
static void dwxgmac2_set_mac_loopback(void __iomem *ioaddr, bool enable)
{
u32 value = readl(ioaddr + XGMAC_RX_CONFIG);
if (enable)
value |= XGMAC_CONFIG_LM;
else
value &= ~XGMAC_CONFIG_LM;
writel(value, ioaddr + XGMAC_RX_CONFIG);
}
const struct stmmac_ops dwxgmac210_ops = {
.core_init = dwxgmac2_core_init,
.set_mac = dwxgmac2_set_mac,
@ -350,6 +362,7 @@ const struct stmmac_ops dwxgmac210_ops = {
.pcs_get_adv_lp = NULL,
.debug = NULL,
.set_filter = dwxgmac2_set_filter,
.set_mac_loopback = dwxgmac2_set_mac_loopback,
};
int dwxgmac2_setup(struct stmmac_priv *priv)