RE: [E1000-devel] 82571EB: Detected Hardware Unit Hang

[Mary Mcgrath]

Joe
Thank you for working this.
I would love to find out how they expect a customer to make the modification
To  "word  0x1A, and see if the 8th bit is 0 or 1, and to change to 0."

I have in turn asked the ct for the lspci command on eth3, maybe the incorrect setting is upstream.

Again,  thank you.
Regards
Mary



-----Original Message-----
From: Joe Jin 
Sent: Monday, November 26, 2012 8:00 PM
To: Fujinaka, Todd
Cc: Dave, Tushar N; netdev@xxxxxxxxxxxxxxx; e1000-devel@xxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Mary Mcgrath
Subject: Re: [E1000-devel] 82571EB: Detected Hardware Unit Hang

On 11/27/12 00:23, Fujinaka, Todd wrote:
> If you look at the previous section, DevCap, you'll see that it's 
> correctly advertising 256 bytes but the system is negotiating 128 for 
> the link to the Ethernet controller. Things on the "other" side of the 
> link are controlled outside of the e1000 driver.
> 
> Tushar's first suggestion was to check the PCIe payload settings in 
> the entire chain. Have you done that? Mismatches will cause hangs.

Hi Todd,

So far I had to know how to modify the maxpayload size, since BIOS have not entry to change this, so I had to use ethtool, now I need to get the offset of MaxPayload size in eeprom, I ever tried to find from Intel online document but failed, any idea?

Thanks in advance,
Joe
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