linux-kernel - Re: [tpmdd-devel] tpm_tis driver failed to suspend, error -62

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Message-ID: <20130411214141.GA12814@gmail.com>
Date:	Thu, 11 Apr 2013 16:41:43 -0500
From:	Kent Yoder <shpedoikal@...il.com>
To:	peterasplund@...too.se
Cc:	Peter.Huewe@...ineon.com, mail@...jiv.net, aaron.lu@...el.com,
	tpmdd-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [tpmdd-devel] tpm_tis driver failed to suspend, error -62

On Sat, Apr 06, 2013 at 06:00:59PM +0200, peterasplund@...too.se wrote:
> 2013-04-02 16:03 skrev Kent Yoder:
> >Hi Peter,
> >
> >On Mon, Apr 1, 2013 at 4:17 PM,  <peterasplund@...too.se> wrote:
> >>2013-03-28 14:12 skrev Peter.Huewe@...ineon.com:
> >>>What also might be worth a look - in your bugzilla it states:
> >>>[ 0.225891] pnp 00:0a: Plug and Play ACPI device, IDs IFX0102
> >>>PNP0c31
> >>>(active)
> >>>[ 9.150673] tpm_tis 00:0a: 1.2 TPM (device-id 0xB, rev-id 16)
> >>>[ 9.292148] tpm_tis 00:0a: Adjusting TPM timeout parameters.
> >>>[ 10.084067] tpm_tis 00:0a: A TPM error (7) occurred attempting to
> >>>read a pcr
> >>>value
> >>>[ 10.084077] tpm_tis 00:0a: TPM is disabled/deactivated (0x7)
> >>>
> >>>
> >>>Can you perhaps try to enable your TPM in the BIOS? It's quite
> >>>often
> >>>hidden under "embedded security device" or "system security".
> >>>Quite often you have to have a bios password set to access these
> >>>settings.
> >>>If your system does not have bios support for TPMs, please
> >>>tell me so
> >>>and I'll try to help you out.
> >>>
> >>
> >>I've enabled it in BIOS now, and the output seems to be a bit
> >>different. Not too uplifting though...
> >>
> >>root@...to:/home/peter# dmesg | grep tpm
> >>[   14.631662] tpm_tis 00:08: 1.2 TPM (device-id 0xB, rev-id 16)
> >>[   14.748276] tpm_tis 00:08: Adjusting TPM timeout parameters.
> >>[   34.908128] tpm_tis 00:08: tpm_transmit: tpm_send: error -62
> >>[  125.992108] tpm_tis 00:08: tpm_transmit: tpm_send: error -62
> >>[  212.908502] tpm_tis 00:08: tpm_transmit: tpm_send: error -62
> >>root@...to:/home/peter# tpm_version
> >>Tspi_Context_Connect failed: 0x00003011 - layer=tsp, code=0011 (17),
> >>Communication failure
> >>root@...to:/home/peter# tcsd -f
> >>TCSD TDDL ioctl: (25) Inappropriate ioctl for device
> >>TCSD TDDL Falling back to Read/Write device support.
> >>TCSD TDDL ERROR: write to device /dev/tpm0 failed: Timer expired
> >>TCSD TCS ERROR: TCS GetCapability failed with result = 0x1087
> >
> >  Can you cat /sys/class/misc/tpm0/device/timeouts? Ivan Pryvalov
> >reported that his TPM showed values that were too small to keep from
> >causing timeouts waiting on TPM commands, but too big to trigger the
> >driver's code to scale them.  (He saw 12000 for the 3 timeout
> >values.)
> >
> Hi Kent
> 
> The values I'm seeing are:
> 
> root@...to:~# cat /sys/class/misc/tpm0/device/timeouts
> 752000 2000000 752000 752000 [adjusted]
> 
> So I guess these are within a normal range?

  Yes, these look normal. So it seems you can send commands to the TPM
up until you try to suspend?  Can you try to cat other files like
/sys/class/misc/tpm0/device/pcrs? This is the simplest way to send some
command to the TPM...

Kent

> Thanks,
> Peter
> 
> > If you're seeing similar values, can you try the attached patch?
> >
> >Thanks,
> >Kent
> >
> >>/Peter A
> >>
> >>
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