Date: Thu, 13 Sep 2012 18:51:24 +0200
From: Simon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de>
To: Sven Eckelmann <sven@narfation.org>
Cc: Adrian Chadd <adrian.chadd@gmail.com>,
	Mohammed Shafi <shafi.wireless@gmail.com>,
	Simon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de>,
	linux-wireless@vger.kernel.org, ath9k-devel@lists.ath9k.org,
	openwrt-devel@lists.openwrt.org,
	Marek Lindner <lindner_marek@yahoo.de>,
	Gabor Juhos <juhosg@openwrt.org>
Subject: Re: AR9330 hornet board stops beaconing after a few days
 (0xdeadbeef)
Message-ID: <20120913165124.GA13877@pandem0nium> (sfid-20120913_185119_861644_1A3D8E8C)
References: <20120813165340.GA10044@pandem0nium>
 <CAD2nsn1=q_YCXjQOLyc+KeG6Bji=7b_VHN4PDA7poXk5Kkdi6Q@mail.gmail.com>
 <CAJ-VmonwheNtv8xfEJnWpD-XOmSEebMFJAmQmWUfe2Pd3tMnqA@mail.gmail.com>
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ath9k fellows,

as it seems no one could find the cause for this problem so far. I'd theref=
ore
like to create a workaround by checking one/some registers for 0xdeadbeef a=
nd
reset the chip if this is found.

Can anyone recommend a register which should never go 0xdeadbeef in a norma=
l case?

=46rom what i've seen, AR_CFG (0x0014) might be a good choice. My regdumps =
say:

bad regdump:  0x000014 0xdeadbeef   =20
good regdump: 0x000014 0x0008010a

Unfortunately I don't have documentation to find out if this register can e=
ver
go deadbeef in a normal case. :)

What do you think? (of course, a proper solution is still appreciated ...)

Cheers,
	Simon


On Wed, Sep 05, 2012 at 04:20:52PM +0200, Sven Eckelmann wrote:
> On Wednesday 05 September 2012 07:08:47 Adrian Chadd wrote:
> > I don't think it's a stuck beacon WAR issue here; 0xdeadbeef really
> > does read like the MAC has gone to sleep.
> >=20
> > Where's the complete register dump hiding?
>=20
> It was not sent to the public mailing lists due to the size. You will rec=
eive=20
> the dump mentioned in the first mail in some minutes.
>=20
> Kind regards,
> 	Sven


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