linux-kernel - Re: Intel 82559 NIC corrupted EEPROM

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Date:	Tue, 07 Nov 2006 09:17:05 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	John <me@...vacy.net>
CC:	linux-kernel@...r.kernel.org, linux.nics@...el.com,
	saw@....sw.com.sg, thockin@...kin.org
Subject: Re: Intel 82559 NIC corrupted EEPROM

John wrote:
> 
> I then used ethtool to dump the contents of the EEPROMs.
> 
> # ethtool -e eth0
> Offset          Values
> ------          ------
> 0x0000          ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> 0x0010          ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> 0x0020          ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> 0x0030          ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> 0x0040          ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> 0x0050          ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> 0x0060          ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> 0x0070          ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> 
> Either the EEPROM image on eth0 is corrupted, or ethtool is not
> able to read the contents of the EEPROM.
> 

[...]

> 
> I then used Donald Becker's program to dump the contents of all
> the EEPROMs. ( ftp://www.scyld.com/pub/diag/ )
> 
> # eepro100-diag -ee
> eepro100-diag.c:v2.13 2/28/2005 Donald Becker (becker@...ld.com)
>  http://www.scyld.com/diag/index.html
> 
> Index #1: Found a Intel i82557/8/9 EtherExpressPro100 adapter at 0xd800.
> EEPROM contents, size 64x16:
>     00: 3000 0464 e4e6 0e03 0000 0201 4701 0000  _0d__________G__
>   0x08: 7213 8310 40a2 0001 8086 0000 0000 0000  _r___@..._______
>       ...
>   0x30: 0128 0000 0000 0000 0000 0000 0000 0000  (_______________
>   0x38: 0000 0000 0000 0000 0000 0000 0000 92f7  ________________
>  The EEPROM checksum is correct.
> Intel EtherExpress Pro 10/100 EEPROM contents:
>   Station address 00:30:64:04:E6:E4.
>   Board assembly 721383-016, Physical connectors present: RJ45
>   Primary interface chip i82555 PHY #1.
>    Sleep mode is enabled.  This is not recommended.
>    Under high load the card may not respond to
>    PCI requests, and thus cause a master abort.
>    To clear sleep mode use the '-G 0 -w -w -f' options.
> 
> Index #2: Found a Intel i82557/8/9 EtherExpressPro100 adapter at 0xdc00.
> EEPROM contents, size 64x16:
>     00: 3000 0464 e5e6 0e03 0000 0201 4701 0000  _0d__________G__
>   0x08: 7213 8310 40a2 0001 8086 0000 0000 0000  _r___@..._______
>       ...
>   0x30: 0128 0000 0000 0000 0000 0000 0000 0000  (_______________
>   0x38: 0000 0000 0000 0000 0000 0000 0000 91f7  ________________
>  The EEPROM checksum is correct.
> Intel EtherExpress Pro 10/100 EEPROM contents:
>   Station address 00:30:64:04:E6:E5.
>   Board assembly 721383-016, Physical connectors present: RJ45
>   Primary interface chip i82555 PHY #1.
>    Sleep mode is enabled.  This is not recommended.
>    Under high load the card may not respond to
>    PCI requests, and thus cause a master abort.
>    To clear sleep mode use the '-G 0 -w -w -f' options.
> 
> Index #3: Found a Intel i82557/8/9 EtherExpressPro100 adapter at 0xe000.
> EEPROM contents, size 64x16:
>     00: 3000 0464 e6e6 0e03 0000 0201 4701 0000  _0d__________G__
>   0x08: 7213 8310 40a2 0001 8086 0000 0000 0000  _r___@..._______
>       ...
>   0x30: 0128 0000 0000 0000 0000 0000 0000 0000  (_______________
>   0x38: 0000 0000 0000 0000 0000 0000 0000 90f7  ________________
>  The EEPROM checksum is correct.
> Intel EtherExpress Pro 10/100 EEPROM contents:
>   Station address 00:30:64:04:E6:E6.
>   Board assembly 721383-016, Physical connectors present: RJ45
>   Primary interface chip i82555 PHY #1.
>    Sleep mode is enabled.  This is not recommended.
>    Under high load the card may not respond to
>    PCI requests, and thus cause a master abort.
>    To clear sleep mode use the '-G 0 -w -w -f' options.
> 
> Apparently, eepro100.ko is able to read the contents of the EEPROM on 
> eth0 and it declares the checksum correct. Is it possible that there is 
> a bug in e100.c that makes it fail to read the EEPROM on eth0?
> 

Sure as heck sounds like it.

	-hpa

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