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e1000: Dump the eeprom when a user encounters a bad checksum

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To help supporting users with a bad eeprom checksum, dump the
eeprom info when such a situation is encountered by a user.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Auke Kok 2007-12-17 13:50:23 -08:00 committed by David S. Miller
parent 8b32e63d48
commit 67b3c27c8a
1 changed files with 74 additions and 11 deletions
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85
drivers/net/e1000/e1000_main.c
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@ -817,6 +817,64 @@ e1000_reset(struct e1000_adapter *adapter)
e1000_release_manageability(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
@ -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);