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net: stmmac: dwmac4/5: Add MAC loopback support

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In preparation for the addition of stmmac selftests we implement the MAC
loopback callback in dwmac4/5 cores.

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 10:20:12 +02:00
committed by David S. Miller
parent cbc1951521
commit 4ce84f4da7
2 changed files with 16 additions and 0 deletions
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1
drivers/net/ethernet/stmicro/stmmac/dwmac4.h
View File

@@ -160,6 +160,7 @@ enum power_event {
#define GMAC_CONFIG_PS BIT(15)
#define GMAC_CONFIG_FES BIT(14)
#define GMAC_CONFIG_DM BIT(13)
#define GMAC_CONFIG_LM BIT(12)
#define GMAC_CONFIG_DCRS BIT(9)
#define GMAC_CONFIG_TE BIT(1)
#define GMAC_CONFIG_RE BIT(0)

15
drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
View File

@@ -703,6 +703,18 @@ static void dwmac4_debug(void __iomem *ioaddr, struct stmmac_extra_stats *x,
x->mac_gmii_rx_proto_engine++;
}
static void dwmac4_set_mac_loopback(void __iomem *ioaddr, bool enable)
{
u32 value = readl(ioaddr + GMAC_CONFIG);
if (enable)
value |= GMAC_CONFIG_LM;
else
value &= ~GMAC_CONFIG_LM;
writel(value, ioaddr + GMAC_CONFIG);
}
const struct stmmac_ops dwmac4_ops = {
.core_init = dwmac4_core_init,
.set_mac = stmmac_set_mac,
@@ -732,6 +744,7 @@ const struct stmmac_ops dwmac4_ops = {
.pcs_get_adv_lp = dwmac4_get_adv_lp,
.debug = dwmac4_debug,
.set_filter = dwmac4_set_filter,
.set_mac_loopback = dwmac4_set_mac_loopback,
};
const struct stmmac_ops dwmac410_ops = {
@@ -763,6 +776,7 @@ const struct stmmac_ops dwmac410_ops = {
.pcs_get_adv_lp = dwmac4_get_adv_lp,
.debug = dwmac4_debug,
.set_filter = dwmac4_set_filter,
.set_mac_loopback = dwmac4_set_mac_loopback,
};
const struct stmmac_ops dwmac510_ops = {
@@ -799,6 +813,7 @@ const struct stmmac_ops dwmac510_ops = {
.safety_feat_dump = dwmac5_safety_feat_dump,
.rxp_config = dwmac5_rxp_config,
.flex_pps_config = dwmac5_flex_pps_config,
.set_mac_loopback = dwmac4_set_mac_loopback,
};
int dwmac4_setup(struct stmmac_priv *priv)