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path: root/drivers/net/cpsw.c
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Diffstat (limited to 'drivers/net/cpsw.c')
-rw-r--r--drivers/net/cpsw.c20
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/net/cpsw.c b/drivers/net/cpsw.c
index db04795..93f8417 100644
--- a/drivers/net/cpsw.c
+++ b/drivers/net/cpsw.c
@@ -227,6 +227,9 @@ struct cpsw_priv {
struct cpsw_slave *slaves;
struct phy_device *phydev;
struct mii_dev *bus;
+
+ u32 mdio_link;
+ u32 phy_mask;
};
static inline int cpsw_ale_get_field(u32 *ale_entry, u32 start, u32 bits)
@@ -598,10 +601,21 @@ static int cpsw_update_link(struct cpsw_priv *priv)
for_each_slave(slave, priv)
cpsw_slave_update_link(slave, priv, &link);
-
+ priv->mdio_link = readl(&mdio_regs->link);
return link;
}
+static int cpsw_check_link(struct cpsw_priv *priv)
+{
+ u32 link = 0;
+
+ link = __raw_readl(&mdio_regs->link) & priv->phy_mask;
+ if ((link) && (link == priv->mdio_link))
+ return 1;
+
+ return cpsw_update_link(priv);
+}
+
static inline u32 cpsw_get_slave_port(struct cpsw_priv *priv, u32 slave_num)
{
if (priv->host_port == 0)
@@ -631,6 +645,8 @@ static void cpsw_slave_init(struct cpsw_slave *slave, struct cpsw_priv *priv)
cpsw_ale_port_state(priv, slave_port, ALE_PORT_STATE_FORWARD);
cpsw_ale_add_mcast(priv, NetBcastAddr, 1 << slave_port);
+
+ priv->phy_mask |= 1 << slave->data->phy_id;
}
static struct cpdma_desc *cpdma_desc_alloc(struct cpsw_priv *priv)
@@ -862,7 +878,7 @@ static int cpsw_send(struct eth_device *dev, void *packet, int length)
int len;
int timeout = CPDMA_TIMEOUT;
- if (!cpsw_update_link(priv))
+ if (!cpsw_check_link(priv))
return -EIO;
flush_dcache_range((unsigned long)packet,