GMA3150

GMA3150

[Luca Ellero]

Hi everybody,
I've read this page:

http://intellinuxgraphics.org/documentation.html

and found a lot of interesting docs on various chipsets. But I'm 
interested on GMA3150 (found for example on Atom processor D450 
LunaPier) and I cannot find datasheets about it.
Can someone please tell me where can I find such docs or maybe if I can 
refer to other chipsets  that are similar (maybe GM965).
thanks in advance
Luke

Re: GMA3150

[Adam Jackson]

On 9/4/12 9:41 AM, Luca Ellero wrote:

> I've read this page:
>
> http://intellinuxgraphics.org/documentation.html
>
> and found a lot of interesting docs on various chipsets. But I'm
> interested on GMA3150 (found for example on Atom processor D450
> LunaPier) and I cannot find datasheets about it.
> Can someone please tell me where can I find such docs or maybe if I can
> refer to other chipsets  that are similar (maybe GM965).

The 3150 is a gen3 part, like the 915 and 945.  Intel has not publicly 
released any programming documentation for GPU generations older than 
gen4 (ie, 965).

- ajax

Re: GMA3150

[Luca Ellero]

On 04/09/2012 15.56, Adam Jackson wrote:
> On 9/4/12 9:41 AM, Luca Ellero wrote:
>
>> I've read this page:
>>
>> http://intellinuxgraphics.org/documentation.html
>>
>> and found a lot of interesting docs on various chipsets. But I'm
>> interested on GMA3150 (found for example on Atom processor D450
>> LunaPier) and I cannot find datasheets about it.
>> Can someone please tell me where can I find such docs or maybe if I can
>> refer to other chipsets  that are similar (maybe GM965).
>
> The 3150 is a gen3 part, like the 915 and 945.  Intel has not publicly
> released any programming documentation for GPU generations older than
> gen4 (ie, 965).
>
> - ajax

Hi Adam,
thank you for your quick reply.
Anyway, if you don't mind I would like to ask you two more questions then:

1) does this mean that I can't use Open Source Graphics Drivers for GMA3150?

2) if this is not true and Intel has not publicly released any 
programming documentation for GMA3150, who and how are this drivers 
written? By reading source code can we understand how GMA3150 works?

Thanks again
regards
Luke

Re: GMA3150

[Adam Jackson]

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On Wed, 2012-09-05 at 08:43 +0200, Luca Ellero wrote:

> Hi Adam,
> thank you for your quick reply.
> Anyway, if you don't mind I would like to ask you two more questions then:
> 
> 1) does this mean that I can't use Open Source Graphics Drivers for GMA3150?

Incorrect. The GMA3150 is supported by open drivers.

> 2) if this is not true and Intel has not publicly released any 
> programming documentation for GMA3150, who and how are this drivers 
> written? By reading source code can we understand how GMA3150 works?

The gen3 support was originally written by Tungsten Graphics under
contract with Intel (with NDA documentation), and is currently
maintained by Intel directly.  It's quite readable, as drivers go.  In
many cases reading the code is more enlightening than reading
documentation anyway.

- ajax

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Re: GMA3150

[Luca Ellero]

On 05/09/2012 15.28, Adam Jackson wrote:
> On Wed, 2012-09-05 at 08:43 +0200, Luca Ellero wrote:
>
>> Hi Adam,
>> thank you for your quick reply.
>> Anyway, if you don't mind I would like to ask you two more questions then:
>>
>> 1) does this mean that I can't use Open Source Graphics Drivers for GMA3150?
>
> Incorrect. The GMA3150 is supported by open drivers.
>
>> 2) if this is not true and Intel has not publicly released any
>> programming documentation for GMA3150, who and how are this drivers
>> written? By reading source code can we understand how GMA3150 works?
>
> The gen3 support was originally written by Tungsten Graphics under
> contract with Intel (with NDA documentation), and is currently
> maintained by Intel directly.  It's quite readable, as drivers go.  In
> many cases reading the code is more enlightening than reading
> documentation anyway.
>
> - ajax

Thank you, now it's a lot more clear.
regards
Luke