exploring Mesa in Genode

[Jamey Sharp]

Alright, I've found a Dell Latitude D620, which has a physical serial
port and Intel 945 integrated graphics. The eglgears demo runs when
built from Genode 14.05, and I can see from the console output that
it's hardware accelerated. So that's great!

My guess is that the fastest way I can prototype separating the driver
into its own address space is to modify the old linux_drivers code,
rather than trying to port the modern Intel driver from a current
Linux kernel release. But I'd prefer to work against Genode master, if
that isn't too much work to throw at a prototype.

What would it take to forward-port the old linux_drivers code from
2010 into dde_linux on current Genode master? (Or should I just build
a throwaway demo against 14.05 to prove the concept, and help with
porting the modern Intel driver later?)

As one experiment in that direction, I tried running eglgears built
from Genode 14.11, which I guess was the last release that had
dde_kit. Even with the patch to not free a static array, it opens a
blank window. The console output stops after these messages:

[init -> launchpad -> init -> eglgears] native_probe*
native_create_probe(EGLNativeDisplayType): not yet implemented dpy=0
[init -> launchpad -> init -> eglgears] native_probe_result
native_get_probe_result(native_probe*): not yet implemented
[init -> launchpad -> init -> nit_fb] using xywh=(300,300,576,408)

On the 14.05 release, where the demo works, the output continues past
that. It starts with:

[init -> launchpad -> init -> nit_fb] using xywh=(300,100,576,408)
refresh_rate=0
[init -> launchpad -> init -> eglgears] native_probe*
native_create_probe(EGLNativeDisplayType): not yet implemented dpy=0
[init -> launchpad -> init -> eglgears] native_probe_result
native_get_probe_result(native_probe*): not yet implemented
[init -> launchpad -> init -> eglgears]
I915_gpu_driver::I915_gpu_driver(): module_agp_intel_init returned 0,
driver at 14e27a0
[init -> launchpad -> init -> eglgears] dev_info: Intel 945GM Chipset
[init -> launchpad -> init -> eglgears] dev_info: detected 7932K stolen memory
[init -> launchpad -> init -> eglgears] dev_info: AGP aperture is 256M
@ 0xd0000000
[init -> launchpad -> init -> eglgears]
I915_gpu_driver::I915_gpu_driver(): call drm_agp_init

Plus another 20 lines or so. Any idea why it's failing?
Jamey

On Fri, Sep 4, 2015 at 4:30 PM, Jamey Sharp <jamey at ...343...> wrote:
> Hey Christian, your suggestion reminded me that there was an option in
> the AMT configuration called "Legacy Redirection Mode". Turning that
> on made amtterm work--hooray!
>
> Which means now I can see that on this X220, eglgears is falling back
> to softpipe--boo. :-( In hindsight, I suppose Sandybridge graphics is
> too new for the driver from 2010.
>
> Now back to scrounging for more laptops to test on...
> Jamey
>
> On Fri, Sep 4, 2015 at 1:58 PM, Christian Helmuth
> <christian.helmuth at ...1...> wrote:
>> Jamey,
>>
>> Sorry for the incomplete mail - I can't imagine why K9-Mail decided to
>> send it in the middle of typing...
>>
>> Thinking about it again, I had a similar issue with an Thinkpad X250
>> recently. The solution was to enable the IDER listener via the wsman
>> tool. My command line was
>>
>>   wsman put http://intel.com/wbem/wscim/1/amt-schema/1/AMT_RedirectionService \
>>   -h <host> -P 16992 -k ListenerEnabled=true
>>
>> Maybe this also works for you.
>>
>> Greets
>> Christian
>>
>>
>> Am 4. September 2015 22:18:41 MESZ, schrieb Jamey Sharp <jamey at ...343...>:
>>>Hi Christian!
>>>
>>>On Sep 4, 2015 12:36 PM, "Christian Helmuth"
>>><christian.helmuth at ...1...> wrote:
>>>> Did you enable SOL/IDER in the AMT configuration settings?
>>>
>>>I've checked a few times now; SOL is enabled and IDER is enabled. So
>>>I'm baffled.
>>>
>>>> The config menu isn't part of the BIOS but can be accessed via CTRL-P
>>>on boot or after pressing the blue Think* key. I'm not sure about the
>>>exact procedure for x220 but it works very similar on all Thinkpad X/T
>>>notebook models.
>>>
>>>Yeah, that surprised me. At least on this laptop, I have to hit the
>>>blue "ThinkVantage" button before it'll let me hit Ctrl-P to reach the
>>>AMT options. The Ctrl-P shortcut doesn't seem to work at any other
>>>time, contrary to what various people on the Internet have written.
>>>
>>>Jamey
>>>
>>>------------------------------------------------------------------------------
>>>_______________________________________________
>>>genode-main mailing list
>>>genode-main at lists.sourceforge.net
>>>https://lists.sourceforge.net/lists/listinfo/genode-main
>>
>> --
>> Christian Helmuth
>> Genode Labs
>>
>> http://www.genode-labs.com/ · http://genode.org/ · /ˈdʒiː.nəʊd/
>>
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>> Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth
>>
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