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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>
This commit is contained in:
Ivan Vecera 2008-09-23 22:46:29 +00:00 committed by David S. Miller
parent 8d1b1fc9b9
commit 7bf6bf4803
1 changed files with 72 additions and 1 deletions
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73
drivers/net/r8169.c
View File

@ -1710,6 +1710,74 @@ static void rtl_disable_msi(struct pci_dev *pdev, struct rtl8169_private *tp)
}
}
static int rtl_eeprom_read(struct pci_dev *pdev, int cap, int addr, __le32 *val)
{
int ret, count = 100;
u16 status = 0;
u32 value;
ret = pci_write_config_word(pdev, cap + PCI_VPD_ADDR, addr);
if (ret < 0)
return ret;
do {
udelay(10);
ret = pci_read_config_word(pdev, cap + PCI_VPD_ADDR, &status);
if (ret < 0)
return ret;
} while (!(status & PCI_VPD_ADDR_F) && --count);
if (!(status & PCI_VPD_ADDR_F))
return -ETIMEDOUT;
ret = pci_read_config_dword(pdev, cap + PCI_VPD_DATA, &value);
if (ret < 0)
return ret;
*val = cpu_to_le32(value);
return 0;
}
static void rtl_init_mac_address(struct rtl8169_private *tp,
void __iomem *ioaddr)
{
struct pci_dev *pdev = tp->pci_dev;
u8 cfg1;
int vpd_cap;
u8 mac[8];
DECLARE_MAC_BUF(buf);
cfg1 = RTL_R8(Config1);
if (!(cfg1 & VPD)) {
dprintk("VPD access not enabled, enabling\n");
RTL_W8(Cfg9346, Cfg9346_Unlock);
RTL_W8(Config1, cfg1 | VPD);
RTL_W8(Cfg9346, Cfg9346_Lock);
}
vpd_cap = pci_find_capability(pdev, PCI_CAP_ID_VPD);
if (!vpd_cap)
return;
/* MAC address is stored in EEPROM at offset 0x0e
* Realtek says: "The VPD address does not have to be a DWORD-aligned
* address as defined in the PCI 2.2 Specifications, but the VPD data
* is always consecutive 4-byte data starting from the VPD address
* specified."
*/
if (rtl_eeprom_read(pdev, vpd_cap, 0x000e, (__le32*)&mac[0]) < 0 ||
rtl_eeprom_read(pdev, vpd_cap, 0x0012, (__le32*)&mac[4]) < 0) {
dprintk("Reading MAC address from EEPROM failed\n");
return;
}
dprintk("MAC address found in EEPROM: %s\n", print_mac(buf, mac));
/* Write MAC address */
rtl_rar_set(tp, mac);
}
static int __devinit
rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
@ -1879,7 +1947,10 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
dev->do_ioctl = rtl8169_ioctl;
}
/* Get MAC address. FIXME: read EEPROM */
/* Read MAC address from EEPROM */
rtl_init_mac_address(tp, ioaddr);
/* Get MAC address */
for (i = 0; i < MAC_ADDR_LEN; i++)
dev->dev_addr[i] = RTL_R8(MAC0 + i);
memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);