linux-kernel - Re: [patch net] sky2: fix rx filter setup on link up

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Date:	Thu, 4 Oct 2012 09:40:04 +0200
From:	Jiri Pirko <jiri@...nulli.us>
To:	Mirko Lindner <mlindner@...vell.com>
Cc:	Stephen Hemminger <shemminger@...tta.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [patch net] sky2: fix rx filter setup on link up

Tue, Sep 18, 2012 at 02:38:52AM CEST, mlindner@...vell.com wrote:
>>Mon, Sep 17, 2012 at 06:12:14PM CEST, shemminger@...tta.com wrote:
>>>On Mon, 17 Sep 2012 17:10:17 +0200
>>>Jiri Pirko <jiri@...nulli.us> wrote:
>>>
>>>> In my case I have following problem. sky2_set_multicast() sets registers
>>>> GM_MC_ADDR_H[1-4] correctly to:
>>>> 0000 0800 0001 0410
>>>> However, when adapter gets link and sky2_link_up() is called, the values
>>>> are for some reason different:
>>>> 0000 0800 0016 0410
>>>
>>>Rather than papering over the problem, it would be better to
>>>trace back what is setting those registers and fix that code.
>
>>Yes, I did that. No code at sky2.[ch] is writing to this registers other
>>than sky2_set_multicast() and sky2_gmac_reset() (I hooked on sky2_write*()).
>>So I strongly believe this is a HW issue (maybe only issue of my revision
>>"Yukon-2 EC chip revision 2")
>
>I would like to check the registers as soon as I'm back in my office next week and report my findings.
>Could you also please check the hint from Stephen?

Mirko, did you have a chance to look at this?

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