netdev - Re: bnx2x + SFP+ DA/2.6.33.3: Got bad status 0x0 when reading from SFP+ EEPROM -> SFP+ module is not initialized

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Date:	Fri, 21 May 2010 15:19:16 +0200
From:	Krzysztof Olędzki <ole@....pl>
To:	eilong@...adcom.com
CC:	Rick Jones <rick.jones2@...com>, Michael Chan <mchan@...adcom.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: bnx2x + SFP+ DA/2.6.33.3: Got bad status 0x0 when reading from
 SFP+ EEPROM -> SFP+ module is not initialized

On 2010-05-21 14:58, Eilon Greenstein wrote:
> On Thu, 2010-05-20 at 13:54 -0700, Krzysztof Olędzki wrote:
>> On 2010-05-20 22:25, Rick Jones wrote:
>>> Some simple/simplistic thoughts/questions...
>>>
>>> Has the DAC been used successfully prior to this?
>>
>> Yes. It was successfully used to connect two HP switches, before I
>> received SFP+ SR modules, that allowed me to put the switches into
>> distanced rooms.
>
> Krzysztof,
>
> I would like to check in what speed the I2C is running at, and while we
> are there, to make sure it is at low speed (100KHz and not 400KHz). Can
> you please add this patch and let me know what you see:

Sure.

>
> diff --git a/drivers/net/bnx2x_link.c b/drivers/net/bnx2x_link.c

<CUT>

[bnx2x_8727_read_sfp_module_eeprom:2774(eth4)]I2C 2W speed 0x0, bit 8 0
[bnx2x_8727_read_sfp_module_eeprom:2774(eth5)]I2C 2W speed 0x0, bit 8 0

> Since we are already off for the weekend, I couldn't find a machine with
> this kind of board to test it for myself. On top of that, I don't have
> this type of DAC cable, so I need your help in this debug process.

No problem. There is no need to ask for a help a person who depends on 
your support. ;) I would like to solve it as soon as possible so I'm 
willing to test everything you send me. ;)

best regards,

			Krzysztof Olędzki

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