diff options
| -rw-r--r-- | drivers/net/e1000/e1000_main.c | 85 |
1 files changed, 74 insertions, 11 deletions
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index 5b129964e832..7f5b2ae70d5d 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -818,6 +818,64 @@ e1000_reset(struct e1000_adapter *adapter) } /** + * Dump the eeprom for users having checksum issues + **/ +void e1000_dump_eeprom(struct e1000_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + struct ethtool_eeprom eeprom; + const struct ethtool_ops *ops = netdev->ethtool_ops; + u8 *data; + int i; + u16 csum_old, csum_new = 0; + + eeprom.len = ops->get_eeprom_len(netdev); + eeprom.offset = 0; + + data = kmalloc(eeprom.len, GFP_KERNEL); + if (!data) { + printk(KERN_ERR "Unable to allocate memory to dump EEPROM" + " data\n"); + return; + } + + ops->get_eeprom(netdev, &eeprom, data); + + csum_old = (data[EEPROM_CHECKSUM_REG * 2]) + + (data[EEPROM_CHECKSUM_REG * 2 + 1] << 8); + for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2) + csum_new += data[i] + (data[i + 1] << 8); + csum_new = EEPROM_SUM - csum_new; + + printk(KERN_ERR "/*********************/\n"); + printk(KERN_ERR "Current EEPROM Checksum : 0x%04x\n", csum_old); + printk(KERN_ERR "Calculated : 0x%04x\n", csum_new); + + printk(KERN_ERR "Offset Values\n"); + printk(KERN_ERR "======== ======\n"); + print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0); + + printk(KERN_ERR "Include this output when contacting your support " + "provider.\n"); + printk(KERN_ERR "This is not a software error! Something bad " + "happened to your hardware or\n"); + printk(KERN_ERR "EEPROM image. Ignoring this " + "problem could result in further problems,\n"); + printk(KERN_ERR "possibly loss of data, corruption or system hangs!\n"); + printk(KERN_ERR "The MAC Address will be reset to 00:00:00:00:00:00, " + "which is invalid\n"); + printk(KERN_ERR "and requires you to set the proper MAC " + "address manually before continuing\n"); + printk(KERN_ERR "to enable this network device.\n"); + printk(KERN_ERR "Please inspect the EEPROM dump and report the issue " + "to your hardware vendor\n"); + printk(KERN_ERR "or Intel Customer Support: linux-nics@intel.com\n"); + printk(KERN_ERR "/*********************/\n"); + + kfree(data); +} + +/** * e1000_probe - Device Initialization Routine * @pdev: PCI device information struct * @ent: entry in e1000_pci_tbl @@ -968,7 +1026,6 @@ e1000_probe(struct pci_dev *pdev, adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw); /* initialize eeprom parameters */ - if (e1000_init_eeprom_params(&adapter->hw)) { E1000_ERR("EEPROM initialization failed\n"); goto err_eeprom; @@ -980,23 +1037,29 @@ e1000_probe(struct pci_dev *pdev, e1000_reset_hw(&adapter->hw); /* make sure the EEPROM is good */ - if (e1000_validate_eeprom_checksum(&adapter->hw) < 0) { DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); - goto err_eeprom; + e1000_dump_eeprom(adapter); + /* + * set MAC address to all zeroes to invalidate and temporary + * disable this device for the user. This blocks regular + * traffic while still permitting ethtool ioctls from reaching + * the hardware as well as allowing the user to run the + * interface after manually setting a hw addr using + * `ip set address` + */ + memset(adapter->hw.mac_addr, 0, netdev->addr_len); + } else { + /* copy the MAC address out of the EEPROM */ + if (e1000_read_mac_addr(&adapter->hw)) + DPRINTK(PROBE, ERR, "EEPROM Read Error\n"); } - - /* copy the MAC address out of the EEPROM */ - - if (e1000_read_mac_addr(&adapter->hw)) - DPRINTK(PROBE, ERR, "EEPROM Read Error\n"); + /* don't block initalization here due to bad MAC address */ memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len); - if (!is_valid_ether_addr(netdev->perm_addr)) { + if (!is_valid_ether_addr(netdev->perm_addr)) DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); - goto err_eeprom; - } e1000_get_bus_info(&adapter->hw); |