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authorIvan Vecera <ivecera@redhat.com>2008-09-23 18:46:29 -0400
committerDavid S. Miller <davem@davemloft.net>2008-10-08 18:40:51 -0400
commit7bf6bf4803df1adc927f585168d2135fb019c698 (patch)
tree1a679dc561738b620cffe0624dad4102d6ce34e0 /drivers/net/r8169.c
parent8d1b1fc9b97ad4de40c063ce3d213895c06fa116 (diff)
r8169: read MAC address from EEPROM on init
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/r8169.c')
-rw-r--r--drivers/net/r8169.c73
1 files changed, 72 insertions, 1 deletions
diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index fb899c675f47..53a0ce445cc5 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -1710,6 +1710,74 @@ static void rtl_disable_msi(struct pci_dev *pdev, struct rtl8169_private *tp)
1710 } 1710 }
1711} 1711}
1712 1712
1713static int rtl_eeprom_read(struct pci_dev *pdev, int cap, int addr, __le32 *val)
1714{
1715 int ret, count = 100;
1716 u16 status = 0;
1717 u32 value;
1718
1719 ret = pci_write_config_word(pdev, cap + PCI_VPD_ADDR, addr);
1720 if (ret < 0)
1721 return ret;
1722
1723 do {
1724 udelay(10);
1725 ret = pci_read_config_word(pdev, cap + PCI_VPD_ADDR, &status);
1726 if (ret < 0)
1727 return ret;
1728 } while (!(status & PCI_VPD_ADDR_F) && --count);
1729
1730 if (!(status & PCI_VPD_ADDR_F))
1731 return -ETIMEDOUT;
1732
1733 ret = pci_read_config_dword(pdev, cap + PCI_VPD_DATA, &value);
1734 if (ret < 0)
1735 return ret;
1736
1737 *val = cpu_to_le32(value);
1738
1739 return 0;
1740}
1741
1742static void rtl_init_mac_address(struct rtl8169_private *tp,
1743 void __iomem *ioaddr)
1744{
1745 struct pci_dev *pdev = tp->pci_dev;
1746 u8 cfg1;
1747 int vpd_cap;
1748 u8 mac[8];
1749 DECLARE_MAC_BUF(buf);
1750
1751 cfg1 = RTL_R8(Config1);
1752 if (!(cfg1 & VPD)) {
1753 dprintk("VPD access not enabled, enabling\n");
1754 RTL_W8(Cfg9346, Cfg9346_Unlock);
1755 RTL_W8(Config1, cfg1 | VPD);
1756 RTL_W8(Cfg9346, Cfg9346_Lock);
1757 }
1758
1759 vpd_cap = pci_find_capability(pdev, PCI_CAP_ID_VPD);
1760 if (!vpd_cap)
1761 return;
1762
1763 /* MAC address is stored in EEPROM at offset 0x0e
1764 * Realtek says: "The VPD address does not have to be a DWORD-aligned
1765 * address as defined in the PCI 2.2 Specifications, but the VPD data
1766 * is always consecutive 4-byte data starting from the VPD address
1767 * specified."
1768 */
1769 if (rtl_eeprom_read(pdev, vpd_cap, 0x000e, (__le32*)&mac[0]) < 0 ||
1770 rtl_eeprom_read(pdev, vpd_cap, 0x0012, (__le32*)&mac[4]) < 0) {
1771 dprintk("Reading MAC address from EEPROM failed\n");
1772 return;
1773 }
1774
1775 dprintk("MAC address found in EEPROM: %s\n", print_mac(buf, mac));
1776
1777 /* Write MAC address */
1778 rtl_rar_set(tp, mac);
1779}
1780
1713static int __devinit 1781static int __devinit
1714rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 1782rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1715{ 1783{
@@ -1879,7 +1947,10 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1879 dev->do_ioctl = rtl8169_ioctl; 1947 dev->do_ioctl = rtl8169_ioctl;
1880 } 1948 }
1881 1949
1882 /* Get MAC address. FIXME: read EEPROM */ 1950 /* Read MAC address from EEPROM */
1951 rtl_init_mac_address(tp, ioaddr);
1952
1953 /* Get MAC address */
1883 for (i = 0; i < MAC_ADDR_LEN; i++) 1954 for (i = 0; i < MAC_ADDR_LEN; i++)
1884 dev->dev_addr[i] = RTL_R8(MAC0 + i); 1955 dev->dev_addr[i] = RTL_R8(MAC0 + i);
1885 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len); 1956 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);