Re: [Intel-gfx] [git pull] drm merge for 3.9-rc1

[Sedat Dilek <sedat.dilek@gmail.com>]

On Thu, Feb 28, 2013 at 6:59 PM, Sedat Dilek <sedat.dilek@gmail.com> wrote:
> On Thu, Feb 28, 2013 at 6:33 PM, Paulo Zanoni <przanoni@gmail.com> wrote:
>> Hi
>>
>> 2013/2/28 Sedat Dilek <sedat.dilek@gmail.com>:
>>> On Thu, Feb 28, 2013 at 6:12 PM, Sedat Dilek <sedat.dilek@gmail.com> wrote:
>>>> On Thu, Feb 28, 2013 at 3:31 PM, Paulo Zanoni <przanoni@gmail.com> wrote:
>>>>> Hi
>>>>>
>>>>> 2013/2/28 Chris Wilson <chris@chris-wilson.co.uk>:
>>>>>> On Thu, Feb 28, 2013 at 12:06:28AM +0100, Sedat Dilek wrote:
>>>>>>> On Wed, Feb 27, 2013 at 11:36 PM, Sedat Dilek <sedat.dilek@gmail.com> wrote:
>>>>>>> > Hi,
>>>>>>> >
>>>>>>> > I am seeing this also on Linux-Next.
>>>>>>> >
>>>>>>> > /var/log/kern.log:Feb 27 22:52:35 fambox kernel: [   28.202381]
>>>>>>> > [drm:intel_dp_aux_wait_done] *ERROR* dp aux hw did not signal timeout
>>>>>>> > (has irq: 1)!
>>>>>>> > /var/log/kern.log:Feb 27 22:52:35 fambox kernel: [   28.210588]
>>>>>>> > [drm:intel_dp_aux_wait_done] *ERROR* dp aux hw did not signal timeout
>>>>>>> > (has irq: 1)!
>>>>>>> >
>>>>>>> > /var/log/kern.log.1:Feb 22 07:36:04 fambox kernel: [   27.408280]
>>>>>>> > [drm:intel_dp_aux_wait_done] *ERROR* dp aux hw did not signal timeout
>>>>>>> > (has irq: 1)!
>>>>>>> >
>>>>>>> > This seems to be hard reproducible...
>>>>>>> > Laptop-LCD... Sandybridge Mobile-GT2.
>>>>>>> >
>>>>>>> > Is there a way to force the error?
>>>>>>> >
>>>>>>> > Possible patch see [1].
>>>>>>> >
>>>>>>> > - Sedat -
>>>>>>> >
>>>>>>> > [1] https://patchwork.kernel.org/patch/2192721/
>>>>>>
>>>>>> That was:
>>>>>>
>>>>>> +       if (!done) {
>>>>>> +               status = I915_READ_NOTRACE(ch_ctl);
>>>>>> +               DRM_ERROR("dp aux hw did not signal timeout (has irq:
>>>>>> %i), status=%08x!\n",
>>>>>> +                         has_aux_irq, status);
>>>>>> +       }
>>>>>>
>>>>>> You applied
>>>>>>
>>>>>> +       if (!done) {
>>>>>> +               status = I915_READ_NOTRACE(ch_ctl);
>>>>>> +               DRM_ERROR("dp aux hw did not signal timeout (has irq:
>>>>>> %i), status=%08x!\n",
>>>>>> +                         has_aux_irq, status);
>>>>>> +       {
>>>>>
>>>>> In addition to this, after the problem happens can you please dump the
>>>>> registers 0x44008 (DEIIR) and 0xC4008 (SDEIIR)? You can do this either
>>>>> by running intel-reg-read (from intel-gpu-tools) or by changing the
>>>>> DRM_ERROR above to also print the result of I915_READ(0x44008) and
>>>>> I915_READ(0xC4008).
>>>>>
>>>>
>>>> Do I need a specific version of intel-gpu-tools?
>>>> Ubuntu/precise has v1.2 in its archives - sufficient?
>>>> Note: The error was twice after dozenz of Linux-Next kernel builds.
>>>>
>>>> - Sedat -
>>>>
>>>> [1] http://packages.ubuntu.com/precise/intel-gpu-tools
>>>>
>>>
>>> Installed intel-gpu-tools.
>>>
>>> # intel_reg_read
>>> Usage: intel_reg_read [-f | addr]
>>>          -f : read back full range of registers.
>>>               WARNING! This could be danger to hang the machine!
>>>          addr : in 0xXXXX format
>>>
>>> # intel_reg_read 0x44008
>>> Couldn't map MMIO region: Resource temporarily unavailable
>>>
>>> [  368.281707] intel_reg_read:3657 conflicting memory types
>>> f0000000-f0400000 uncached-minus<->write-combining
>>> [  381.521912] intel_reg_read:3658 conflicting memory types
>>> f0000000-f0400000 uncached-minus<->write-combining
>>> [  401.136291] intel_reg_read:3659 conflicting memory types
>>> f0000000-f0400000 uncached-minus<->write-combining
>>>
>>> Wrong i-g-t version? Missing enabled kernel-config option? Boot with
>>> i915 debug enabled?
>>
>> Just build the version from git and it should work
>> (http://cgit.freedesktop.org/xorg/app/intel-gpu-tools/).
>>
>
> NO.
>
> $ git clone git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
> intel-gpu-tools-git
>
> $ cd intel-gpu-tools-git/
>
> $ ./autogen.sh --disable-dumper <--- requires swig2.0 and python >=3.x
>
> $ sudo ./tools/intel_reg_read 0x44008
> 0x44008 : 0x0
>
> $ sudo ./tools/intel_reg_read 0xC4008
> 0xC4008 : 0x0
>
> $ sudo ./tools/intel_reg_dumper > /tmp/intel_reg_dumper.txt <--- see attachment
>
> Does this help you?
>

Ping Paulo.

- Sedat -

> - Sedat -
>
>
>>>
>>> - Sedat -
>>>
>>>>> If you conclude that the value of 0x44008 is 0x0 while the value of
>>>>> 0xC4008 is not, then this patch should help:
>>>>> https://patchwork.kernel.org/patch/2177841/
>>>>>
>>>>>>
>>>>>> That second '{' is the source of the compile error.
>>>>>> -Chris
>>>>>>
>>>>>> --
>>>>>> Chris Wilson, Intel Open Source Technology Centre
>>>>>> _______________________________________________
>>>>>> Intel-gfx mailing list
>>>>>> Intel-gfx@lists.freedesktop.org
>>>>>> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Paulo Zanoni
>>
>>
>>
>> --
>> Paulo Zanoni