Graphics driver Init code

Graphics driver Init code

[Dushyant Behl]

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Hi Everyone,

I am an Operating system developer and I'm working on a project for
which I wanted to understand the working of Intel Graphics Driver.
Being somewhat new in this field, Can I ask anyone to point me where
should I start digging in the code? I mean where the graphic driver
initializes contact with the GPU.

I'm extremely sorry if I broke any mailing list etiquette. Please forgive
me.

Thanks in Advance,
Dushyant Behl

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Re: Graphics driver Init code

[Dushyant Behl]

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Ping.


On Thu, Aug 14, 2014 at 2:55 AM, Dushyant Behl <myselfdushyantbehl@gmail.com
> wrote:

> Hi Everyone,
>
> I am an Operating system developer and I'm working on a project for
> which I wanted to understand the working of Intel Graphics Driver.
> Being somewhat new in this field, Can I ask anyone to point me where
> should I start digging in the code? I mean where the graphic driver
> initializes contact with the GPU.
>
> I'm extremely sorry if I broke any mailing list etiquette. Please forgive
> me.
>
> Thanks in Advance,
> Dushyant Behl
>

I would be really thankful if someone can help me.

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Re: Graphics driver Init code

[Matt Turner]

On Tue, Aug 19, 2014 at 11:29 AM, Dushyant Behl
<myselfdushyantbehl@gmail.com> wrote:
> Ping.
>
>
> On Thu, Aug 14, 2014 at 2:55 AM, Dushyant Behl
> <myselfdushyantbehl@gmail.com> wrote:
>>
>> Hi Everyone,
>>
>> I am an Operating system developer and I'm working on a project for
>> which I wanted to understand the working of Intel Graphics Driver.
>> Being somewhat new in this field, Can I ask anyone to point me where
>> should I start digging in the code? I mean where the graphic driver
>> initializes contact with the GPU.
>>
>> I'm extremely sorry if I broke any mailing list etiquette. Please forgive
>> me.
>>
>> Thanks in Advance,
>> Dushyant Behl
>
>
> I would be really thankful if someone can help me.

All of the code exists in

   drivers/gpu/drm/i915

i915_drv.c contains i915_init, which is the first thing that gets
called when the module is loaded.

>From there, there's another 67k lines of code that should keep you busy. :)

Re: Graphics driver Init code

[Daniel Vetter]

On Tue, Aug 19, 2014 at 8:58 PM, Matt Turner <mattst88@gmail.com> wrote:
> On Tue, Aug 19, 2014 at 11:29 AM, Dushyant Behl
> <myselfdushyantbehl@gmail.com> wrote:
>> Ping.
>>
>>
>> On Thu, Aug 14, 2014 at 2:55 AM, Dushyant Behl
>> <myselfdushyantbehl@gmail.com> wrote:
>>>
>>> Hi Everyone,
>>>
>>> I am an Operating system developer and I'm working on a project for
>>> which I wanted to understand the working of Intel Graphics Driver.
>>> Being somewhat new in this field, Can I ask anyone to point me where
>>> should I start digging in the code? I mean where the graphic driver
>>> initializes contact with the GPU.
>>>
>>> I'm extremely sorry if I broke any mailing list etiquette. Please forgive
>>> me.
>>>
>>> Thanks in Advance,
>>> Dushyant Behl
>>
>>
>> I would be really thankful if someone can help me.
>
> All of the code exists in
>
>    drivers/gpu/drm/i915
>
> i915_drv.c contains i915_init, which is the first thing that gets
> called when the module is loaded.
>
> From there, there's another 67k lines of code that should keep you busy. :)

There's also various blog posts from developers for high-level
overview, google should be able to dig most of them up. Or start with
mine ;-)

http://blog.ffwll.ch/search/label/In-Depth%20Tech

We also started to document the code internals a bit in the drm
docbook, but that's still very much work in progress and so really
spotty:

http://people.freedesktop.org/~danvet/drm/

Cheers, Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch