Messages in this thread Patch in this message | | | Date | Mon, 14 Feb 2011 17:51:54 +0900 | From | Toshiharu Okada <> | Subject | [PATCH] pch_gbe: Fix the MAC Address load issue. |
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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> --- drivers/net/pch_gbe/pch_gbe.h | 2 +- drivers/net/pch_gbe/pch_gbe_main.c | 7 +++++++ 2 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/drivers/net/pch_gbe/pch_gbe.h b/drivers/net/pch_gbe/pch_gbe.h index a0c26a9..e1e33c8 100644 --- 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 8ec48ad..8bba091 100644 --- 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 @@ -2333,6 +2339,7 @@ static int pch_gbe_probe(struct pci_dev *pdev, netdev->features = NETIF_F_HW_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 */ -- 1.6.2.5
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