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net: bcmgenet: use MAC link status for fixed phy

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When using the fixed PHY with GENET (e.g. MOCA) the PHY link
status can be determined from the internal link status captured
by the MAC. This allows the PHY state machine to use the correct
link state with the fixed PHY even if MAC link event interrupts
are missed when the net device is opened.

Fixes: 8d88c6ebb34c ("net: bcmgenet: enable MoCA link state change detection")
Signed-off-by: Doug Berger <opendmb@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Doug Berger 2018-08-28 12:33:15 -07:00 committed by David S. Miller
parent c305660b32
commit c3c397c1f1
2 changed files with 11 additions and 2 deletions
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3
drivers/net/ethernet/broadcom/genet/bcmgenet.h
View File

@ -186,6 +186,9 @@ struct bcmgenet_mib_counters {
#define UMAC_MAC1 0x010
#define UMAC_MAX_FRAME_LEN 0x014
#define UMAC_MODE 0x44
#define MODE_LINK_STATUS (1 << 5)
#define UMAC_EEE_CTRL 0x064
#define EN_LPI_RX_PAUSE (1 << 0)
#define EN_LPI_TX_PFC (1 << 1)

10
drivers/net/ethernet/broadcom/genet/bcmmii.c
View File

@ -115,8 +115,14 @@ void bcmgenet_mii_setup(struct net_device *dev)
static int bcmgenet_fixed_phy_link_update(struct net_device *dev,
struct fixed_phy_status *status)
{
if (dev && dev->phydev && status)
status->link = dev->phydev->link;
struct bcmgenet_priv *priv;
u32 reg;
if (dev && dev->phydev && status) {
priv = netdev_priv(dev);
reg = bcmgenet_umac_readl(priv, UMAC_MODE);
status->link = !!(reg & MODE_LINK_STATUS);
}
return 0;
}