[PATCH] drm: dumb scanout create/mmap for intel/radeon (v3)

Corbin Simpson mostawesomedude at gmail.com
Thu Jan 6 16:12:17 PST 2011

On Thu, Jan 6, 2011 at 3:16 PM, Dave Airlie <airlied at gmail.com> wrote:
> From: Dave Airlie <airlied at redhat.com>
> This is just an idea that might or might not be a good idea,
> it basically adds two ioctls to create a dumb and map a dumb buffer
> suitable for scanout. The handle can be passed to the KMS ioctls to create
> a framebuffer.
> It looks to me like it would be useful in the following cases:
> a) in development drivers - we can always provide a shadowfb fallback.
> b) libkms users - we can clean up libkms a lot and avoid linking
> to libdrm_*.
> c) plymouth via libkms is a lot easier.
> Userspace bits would be just calls + mmaps. We could probably
> mark these handles somehow as not being suitable for acceleartion
> so as top stop people who are dumber than dumb.
> Signed-off-by: Dave Airlie <airlied at redhat.com>

Looks pretty reasonable. One thing from the IRC conversation on v2 was
about cursors -- were they going to be handled through this patch?

~ C.

When the facts change, I change my mind. What do you do, sir? ~ Keynes

Corbin Simpson
<MostAwesomeDude at gmail.com>

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