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

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Message-ID: <175CCF5F49938B4D99B2E3EF7F558EBE1B63898F0B@SC-VEXCH4.marvell.com>
Date:	Mon, 17 Sep 2012 17:38:52 -0700
From:	Mirko Lindner <mlindner@...vell.com>
To:	Jiri Pirko <jiri@...nulli.us>,
	Stephen Hemminger <shemminger@...tta.com>
CC:	"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

>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?--
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