pch_gbe: Fix the MAC Address load issue.

With the specification of hardware,
the processing at the time of driver starting was modified.

This device write automatically the MAC address read from serial ROM
into a MAC Adress1A/1B register at the time of power on reset.
However, when stable clock is not supplied,
the writing of MAC Adress1A/1B register may not be completed.
In this case, it is necessary to load MAC address to MAC Address1A/1B register
by the MAC Address1 load register.

This patch always does the above processing,
in order not to be dependent on system environment.

Signed-off-by: Toshiharu Okada <toshiharu-linux@dsn.okisemi.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/pch_gbe/pch_gbe.h b/drivers/net/pch_gbe/pch_gbe.h
index a0c26a99520fb183f13dc302852d85d334264778..e1e33c80fb251cd5896c6797c25cd08247c82fdf 100644 (file)
--- a/drivers/net/pch_gbe/pch_gbe.h
+++ b/drivers/net/pch_gbe/pch_gbe.h
@@ -73,7 +73,7 @@ struct pch_gbe_regs {
        struct pch_gbe_regs_mac_adr mac_adr[16];
        u32 ADDR_MASK;
        u32 MIIM;
-       u32 reserve2;
+       u32 MAC_ADDR_LOAD;
        u32 RGMII_ST;
        u32 RGMII_CTRL;
        u32 reserve3[3];

diff --git a/drivers/net/pch_gbe/pch_gbe_main.c b/drivers/net/pch_gbe/pch_gbe_main.c
index f52d852569fbb5bdd10dac1d014d56247f89d913..b99e90aca37dc4afa70cfc58195b5d59c90b7b48 100644 (file)
--- a/drivers/net/pch_gbe/pch_gbe_main.c
+++ b/drivers/net/pch_gbe/pch_gbe_main.c
@@ -89,6 +89,12 @@ static unsigned int copybreak __read_mostly = PCH_GBE_COPYBREAK_DEFAULT;
 static int pch_gbe_mdio_read(struct net_device *netdev, int addr, int reg);
 static void pch_gbe_mdio_write(struct net_device *netdev, int addr, int reg,
                               int data);
+
+inline void pch_gbe_mac_load_mac_addr(struct pch_gbe_hw *hw)
+{
+       iowrite32(0x01, &hw->reg->MAC_ADDR_LOAD);
+}
+
 /**
  * pch_gbe_mac_read_mac_addr - Read MAC address
  * @hw:                    Pointer to the HW structure
@@ -2331,6 +2337,7 @@ static int pch_gbe_probe(struct pci_dev *pdev,
        netdev->features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_GRO;
        pch_gbe_set_ethtool_ops(netdev);
 
+       pch_gbe_mac_load_mac_addr(&adapter->hw);
        pch_gbe_mac_reset_hw(&adapter->hw);
 
        /* setup the private structure */