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From: Michael Buesch <mb@bu3sch.de>
To: Yuval Hager <yuval@avramzon.net>
Subject: Re: BCM4312 Fails when xdm is started
Date: Sat, 22 Nov 2008 16:13:00 +0100
Cc: Larry Finger <Larry.Finger@lwfinger.net>,
	bcm43xx-dev@lists.berlios.de, LKML <linux-kernel@vger.kernel.org>,
	wireless <linux-wireless@vger.kernel.org>,
	Peter Stuge <peter@stuge.se>
References: <200811151801.02369.yuval@avramzon.net> <4926FDB3.2030701@lwfinger.net> <200811220839.32674.yuval@avramzon.net>
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On Saturday 22 November 2008 07:39:24 Yuval Hager wrote:
> On Friday 21 November 2008, Larry Finger wrote:
> > Yuval,
> >
> > Michael Buesch wrote:
> > > Can you dump PCI config space and SSB registers (TMSLOW, maybe others,
> > > too). It looks like a random bus write disabled the device.
> >
> > Please incorporate the following patch and run your system. In addition,
> > run the following command when the wireless is working and after it fails:
> >
> > sudo lspci -d 14e4:4312 -x
> >
> 
> When the wireless is working:
> $ lspci -d 14e4:4312 -x
> 02:00.0 Network controller: Broadcom Corporation BCM4312 802.11a/b/g (rev 02)
> 00: e4 14 12 43 06 01 10 00 02 00 80 02 08 00 00 00
> 10: 04 c0 ff fd 00 00 00 00 00 00 00 00 00 00 00 00
> 20: 00 00 00 00 00 00 00 00 00 00 00 00 3c 10 71 13
> 30: 00 00 00 00 40 00 00 00 00 00 00 00 0a 01 00 00
> 
> After it fails:
> $ lspci -d 14e4:4312 -x
> 02:00.0 Network controller: Broadcom Corporation BCM4312 802.11a/b/g (rev 02)
> 00: e4 14 12 43 00 00 10 00 02 00 80 02 00 00 00 00
                  ^^                      ^^
Somebody disabled MMIO and busmastering.
And somebody cleared the CACHE_LINE_SIZE register.

> 10: 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 20: 00 00 00 00 00 00 00 00 00 00 00 00 3c 10 71 13
> 30: 00 00 00 00 40 00 00 00 00 00 00 00 00 01 00 00

-- 
Greetings Michael.