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Message-ID: <aED6ahMoKjO11JVv@archie.me>
Date: Thu, 5 Jun 2025 09:01:14 +0700
From: Bagas Sanjaya <bagasdotme@...il.com>
To: Abdulrasaq Lawani <abdulrasaqolawani@...il.com>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
Jonathan Corbet <corbet@....net>, dri-devel@...ts.freedesktop.org,
linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] drm: add overview diagram for drm stack
On Wed, Jun 04, 2025 at 04:37:27PM +0200, Simona Vetter wrote:
> On Mon, Jun 02, 2025 at 08:28:30AM +0700, Bagas Sanjaya wrote:
> > On Sun, Jun 01, 2025 at 06:18:47PM -0400, Abdulrasaq Lawani wrote:
> > > Add an overview diagram of Linux DRM architecture for
> > > graphics and compute to introduction.rst
> > >
> > > Signed-off-by: Abdulrasaq Lawani <abdulrasaqolawani@...il.com>
> > > ---
> > > <snipped>...
> > > diff --git a/Documentation/gpu/introduction.rst b/Documentation/gpu/introduction.rst
> > > index 3cd0c8860b949408ed570d3f9384edd5f03df002..a8d3f953a470180b395ec52a45d0f3f4561424e0 100644
> > > --- a/Documentation/gpu/introduction.rst
> > > +++ b/Documentation/gpu/introduction.rst
> > > @@ -14,7 +14,45 @@ including the TTM memory manager, output configuration and mode setting,
> > > and the new vblank internals, in addition to all the regular features
> > > found in current kernels.
> > >
> > > -[Insert diagram of typical DRM stack here]
> > > +Overview of the Linux DRM Architecture
> > > +--------------------------------------
> > > +::
> > > +
> > > + +-----------------------------+
> > > + | User-space Apps |
> > > + | (Games, Browsers, ML, etc.) |
> > > + +-----------------------------+
> > > + |
> > > + v
> > > + +---------------------------------------+
> > > + | Graphics APIs | Compute APIs |
> > > + | (OpenGL, Vulkan) | (OpenCL, CUDA) |
> > > + +---------------------------------------+
> > > + | |
> > > + v v
> > > + +---------------------+ +-----------------------+
> > > + | User-space Driver | | Compute Runtime |
> > > + | (Mesa, AMD/NVIDIA) | | (OpenCL, CUDA, ROCm) |
> > > + +---------------------+ +-----------------------+
> > > + | |
> > > + +--------+----------+
> > > + |
> > > + v
> > > + +-----------------------+
> > > + | libdrm (DRM API) |
> > > + +-----------------------+
> > > + |
> > > + v
> > > + +-------------------------------------------+
> > > + | Kernel DRM/KMS Driver (i915, amdgpu, |
> > > + | nouveau, etc.) |
> > > + +-------------------------------------------+
> > > + | |
> > > + v v
> > > + +----------------+ +-------------------+
> > > + | GPU Display HW | | GPU Compute Units |
> > > + +----------------+ +-------------------+
> > > +
>
> I'm a bit late to the party, apologies. I'm not sure how much use there is
> in an extremely simplified diagram like this, least because it's really
> incomplete and leaves out the entire display and compositor side.
>
> My idea was that we'd instead link to the large pile of introductory and
> overview talks further down in this file, if people want to get an
> overview over what drm does.
So the stub that's being patched here can be removed, right?
>
> If you want I guess you could add some links to the relevant wikipedia
> pages, I think they also do a fairly decent job of explaining the big
> picture.
What articles?
Thanks.
--
An old man doll... just what I always wanted! - Clara
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