Date:	Tue, 23 Apr 2013 16:30:53 +0200
From:	peterasplund@...too.se
To:	Kent Yoder <shpedoikal@...il.com>
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

2013-04-11 23:41 skrev Kent Yoder:
> 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
>

Hi Kent, I'm sorry I haven't replied to this message before. I must 
have missed it!

root@...to:/sys/class/misc/tpm0# ll
drwxr-xr-x 3 root root    0 Apr 23 16:20 ./
drwxr-xr-x 3 root root    0 Apr 23 16:20 ../
-r--r--r-- 1 root root 4096 Apr 23 16:26 dev
lrwxrwxrwx 1 root root    0 Apr 23 16:26 device -> ../../../00:08/
drwxr-xr-x 2 root root    0 Apr 23 16:26 power/
lrwxrwxrwx 1 root root    0 Apr 23 16:20 subsystem -> 
../../../../../class/misc/
-rw-r--r-- 1 root root 4096 Apr 23 16:20 uevent

root@...to:/sys/class/misc/tpm0# cat dev
10:224
root@...to:/sys/class/misc/tpm0# cat device/pcrs   (prints nothing 
after a delay of a second or so)
root@...to:/sys/class/misc/tpm0# cat uevent
MAJOR=10
MINOR=224
DEVNAME=tpm0
root@...to:/sys/class/misc/tpm0# cat device/active
root@...to:/sys/class/misc/tpm0# cat device/cancel
cat: device/cancel: Permission denied
root@...to:/sys/class/misc/tpm0# cat device/caps
root@...to:/sys/class/misc/tpm0# cat device/durations
1000000 4000000 152000000 [adjusted]
root@...to:/sys/class/misc/tpm0# cat device/enabled
root@...to:/sys/class/misc/tpm0# cat device/id
IFX0102
PNP0c31
root@...to:/sys/class/misc/tpm0# cat device/options
root@...to:/sys/class/misc/tpm0# cat device/owned
root@...to:/sys/class/misc/tpm0# cat device/pubek
root@...to:/sys/class/misc/tpm0# cat device/resources
state = active
mem 0xfed40000-0xfed44fff
io 0x4e-0x4f
io 0x1670-0x167f
irq 11
root@...to:/sys/class/misc/tpm0# cat device/temp_deactivated
root@...to:/sys/class/misc/tpm0# cat device/timeouts
752000 2000000 752000 752000 [adjusted]
root@...to:/sys/class/misc/tpm0# cat device/uevent
DRIVER=tpm_tis

To be able to do the 'cat' above, I usually need to restart my 
computer, otherwise the files aren't there. That's probably after I've 
put the computer in sleep mode (which works if I add tpm_tis to the 
module blacklist). Perhaps the same problem is related to this one:
I just did a grep of my dmesg and saw some new error messages (28) in 
it. Perhaps they started occurring after I enabled it in BIOS.

root@...to:/home/peter# dmesg | grep tpm_
[   11.369198] tpm_tis 00:08: 1.2 TPM (device-id 0xB, rev-id 16)
[   11.508115] tpm_tis 00:08: Adjusting TPM timeout parameters.
[   32.560040] tpm_tis 00:08: tpm_transmit: tpm_send: error -62
[ 4320.577827] tpm_tis 00:08: 1.2 TPM (device-id 0xB, rev-id 16)
[ 4320.636111] tpm_tis 00:08: A TPM error (28) occurred attempting to 
determine the timeouts
[ 4320.696081] tpm_tis 00:08: A TPM error (28) occurred attempting to 
determine the durations
[ 4320.696091] tpm_tis 00:08: Could not get TPM timeouts and durations
[ 9279.692915] tpm_tis 00:08: 1.2 TPM (device-id 0xB, rev-id 16)
[ 9279.756184] tpm_tis 00:08: A TPM error (28) occurred attempting to 
determine the timeouts
[ 9279.822186] tpm_tis 00:08: A TPM error (28) occurred attempting to 
determine the durations
[ 9279.822197] tpm_tis 00:08: Could not get TPM timeouts and durations
[10968.845856] tpm_tis 00:08: 1.2 TPM (device-id 0xB, rev-id 16)
[10968.904111] tpm_tis 00:08: A TPM error (28) occurred attempting to 
determine the timeouts
[10968.964100] tpm_tis 00:08: A TPM error (28) occurred attempting to 
determine the durations
[10968.964111] tpm_tis 00:08: Could not get TPM timeouts and durations
[13304.341746] tpm_tis 00:08: 1.2 TPM (device-id 0xB, rev-id 16)
[13304.400093] tpm_tis 00:08: A TPM error (28) occurred attempting to 
determine the timeouts
[13304.464134] tpm_tis 00:08: A TPM error (28) occurred attempting to 
determine the durations
[13304.464142] tpm_tis 00:08: Could not get TPM timeouts and durations

Thank you,
Peter A


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