forked from torvalds/linux
-
Notifications
You must be signed in to change notification settings - Fork 1
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
e1000: Dump the eeprom when a user encounters a bad checksum
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 <[email protected]> Signed-off-by: Jeff Garzik <[email protected]>
- Loading branch information
Showing
1 changed file
with
74 additions
and
11 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
|
|
@@ -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: [email protected]\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); | ||
|
|
||
|
|
||