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Date:      Fri, 30 Jul 2010 16:31:44 +0300
From:      Andriy Gapon <avg@icyb.net.ua>
To:        Anton Shterenlikht <mexas@bristol.ac.uk>
Cc:        lstewart@freebsd.org, Gavin Atkinson <gavin@freebsd.org>, freebsd-current@freebsd.org
Subject:   Re: amd64 panic snd_hda - hdac_get_capabilities: Invalid corb size (0)
Message-ID:  <4C52D440.1070908@icyb.net.ua>
In-Reply-To: <20100730130237.GA9853@mech-cluster241.men.bris.ac.uk>
References:  <20100728160152.GA91835@mech-cluster241.men.bris.ac.uk> <4C5055C6.5050208@icyb.net.ua> <20100728161715.GA91906@mech-cluster241.men.bris.ac.uk> <4C505BE8.1050308@icyb.net.ua> <20100728164449.GA92092@mech-cluster241.men.bris.ac.uk> <4C505FFC.6000601@icyb.net.ua> <20100728171324.GB92206@mech-cluster241.men.bris.ac.uk> <4C50663B.7030203@icyb.net.ua> <20100730115753.GA9578@mech-cluster241.men.bris.ac.uk> <4C52C00E.3050400@icyb.net.ua> <20100730130237.GA9853@mech-cluster241.men.bris.ac.uk>

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on 30/07/2010 16:02 Anton Shterenlikht said the following:
> % dmesg | fgrep -i hda
> hdac0: <ATI SB600 High Definition Audio Controller> irq 16 at device 20.2 on pci0
> hdac0: HDA Driver Revision: 20100226_0142
> hdac0: Lazy allocation of 0x4000 bytes rid 0x10 type 3 at 0xb7fb0000
> hdac0: [MPSAFE]
> hdac0: [ITHREAD]
> hdac0: hdac_get_capabilities: Invalid corb size (0)
> hdac0: Resetting corb size to 256
> hdac0: hdac_get_capabilities: Invalid rirb size (0)
> hdac0: Resetting rirb size to 256
> hdac0: Caps: OSS 0, ISS 0, BSS 0, NSDO 1, CORB 256, RIRB 256
> hdac0: 
> %

Oh, zero OSS + ISS is bad too.
Need to think about it, but no time now...

Just a one thing to try - can you please add hdac_reset(sc, 1) call in
hdac_attach() right before hdac_get_capabilities() call?
The idea is to reset the controller before trying to get its capabilities.

-- 
Andriy Gapon



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