[RFC] Host1x/TegraDRM UAPI

[Karol Herbst]

On Fri, Jun 26, 2020 at 1:13 PM Mikko Perttunen <cyndis at kapsi.fi> wrote:
>
> On 6/26/20 2:06 PM, Karol Herbst wrote:
> > On Tue, Jun 23, 2020 at 3:03 PM Mikko Perttunen <cyndis at kapsi.fi> wrote:
> >>
> >> # Host1x/TegraDRM UAPI proposal
> >>
> >> This is a proposal for a stable UAPI for Host1x and TegraDRM, to replace
> >> the current TegraDRM UAPI that is behind `STAGING` and quite obsolete in
> >> many ways.
> >>
> >> I haven't written any implementation yet -- I'll do that once there is
> >> some agreement on the high-level design.
> >>
> >> Current open items:
> >>
> >> * The syncpoint UAPI allows userspace to create sync_file FDs with
> >> arbitrary syncpoint fences. dma_fence code currently seems to assume all
> >> fences will be signaled, which would not necessarily be the case with
> >> this interface.
> >> * Previously present GEM IOCTLs (GEM_CREATE, GEM_MMAP) are not present.
> >> Not sure if they are still needed.
> >>
> >
> > Hi, as this wasn't addressed here (and sorry if I missed it): is there
> > an open source userspace making use of this UAPI? Because this is
> > something which needs to be seen before it can be included at all.
> >
>
> Hi Karol,
>
> not currently, but once we have hashed out the design a little bit (and
> I'm back from vacation), I'll work on open source userspace and
> converting existing code using the staging UAPI to this one.
>
> Mikko
>

okay, cool, sounds good!