[Mesa-dev] [PATCH v2 0/6] broadcom/vc4: Native fence fd support

[Stefan Schake]

On Wed, Apr 25, 2018 at 12:00 AM, Stefan Schake <stschake at gmail.com> wrote:
> v2 drops the submit flags, directly moves in fence handling to the
> job submit function and queries for the syncobj cap instead of using
> a separate support parameter.
>
> This series adds support for the native fence fd extension to vc4.
> The implementation relies on a newly introduced kernel interface that
> allows submitting syncobjs for in/out fences during job submission.
>
> Since syncobjs are relatively new, patches 1 and 3 have build changes
> for automake and meson to require a recent libdrm version.
>
> There is some scope here to replace the previous sequence number based
> implementation with only syncobjs, but given that we need to continue
> supporting older kernels I felt it would have only added complexity.
>
> This has been tested with piglit and kmscube -A(tomic). In particular,
> I checked that the fd numbers weren't increasing during the kmscube run.
>
> Should not be merged until the kernel side lands. In particular, patch 2
> is purely provisional.
>
> Stefan Schake (6):
>   broadcom/vc4: Drop libdrm_vc4 requirement
>   drm-uapi: Update vc4 header with syncobj submit support
>   broadcom/vc4: Bump libdrm requirement
>   broadcom/vc4: Detect syncobj support
>   broadcom/vc4: Store job fence in syncobj
>   broadcom/vc4: Native fence fd support
>
>  configure.ac                          |  3 +-
>  include/drm-uapi/vc4_drm.h            | 13 +++++--
>  meson.build                           |  2 +
>  src/gallium/drivers/vc4/vc4_context.c | 29 +++++++++++++--
>  src/gallium/drivers/vc4/vc4_context.h | 10 ++++-
>  src/gallium/drivers/vc4/vc4_fence.c   | 70 +++++++++++++++++++++++++++++++++--
>  src/gallium/drivers/vc4/vc4_job.c     | 34 ++++++++++++++++-
>  src/gallium/drivers/vc4/vc4_screen.c  | 12 +++++-
>  src/gallium/drivers/vc4/vc4_screen.h  |  5 ++-
>  9 files changed, 160 insertions(+), 18 deletions(-)
>
> --
> 2.7.4
>

Kernel v2 is here:

https://patchwork.freedesktop.org/series/42082/

Thanks,
Stefan