From: Thierry Reding <treding@xxxxxxxxxx> Hi, This series implements a new IOCTL to submit push buffers that can optionally return a sync FD or sync object to userspace. This is useful in cases where userspace wants to synchronize operations between the GPU and another driver (such as KMS for display). Among other things this allows extensions such as eglDupNativeFenceFDANDROID to be implemented. Note that patch 4 modifies the ABI introduced in patch 3 by allowing DRM sync objects to be passed rather than only sync FDs. It also allows any number of sync FDs/objects to be passed in or emitted. I think those are useful features, but I left them in a separate patch in case everybody else thinks that this won't be needed. If we decide to merge the new ABI then patch 4 should be squashed into patch 3. The corresponding userspace changes can be found here: libdrm: https://gitlab.freedesktop.org/tagr/drm/-/commits/nouveau-sync-fd-v2/ mesa: https://gitlab.freedesktop.org/tagr/mesa/-/commits/nouveau-sync-fd/ I've verified that this works with kmscube's --atomic mode and Weston. Thierry Thierry Reding (6): drm/nouveau: Split nouveau_fence_sync() drm/nouveau: Add nouveau_fence_ref() drm/nouveau: Support fence FDs at kickoff drm/nouveau: Support sync FDs and syncobjs drm/nouveau: Support DMA fence arrays drm/nouveau: Allow zero pushbuffer submits drivers/gpu/drm/nouveau/dispnv04/crtc.c | 4 +- drivers/gpu/drm/nouveau/nouveau_bo.c | 38 ++- drivers/gpu/drm/nouveau/nouveau_bo.h | 2 + drivers/gpu/drm/nouveau/nouveau_drm.c | 1 + drivers/gpu/drm/nouveau/nouveau_fence.c | 90 +++--- drivers/gpu/drm/nouveau/nouveau_fence.h | 3 +- drivers/gpu/drm/nouveau/nouveau_gem.c | 402 ++++++++++++++++++------ drivers/gpu/drm/nouveau/nouveau_gem.h | 2 + include/uapi/drm/nouveau_drm.h | 23 ++ 9 files changed, 410 insertions(+), 155 deletions(-) -- 2.28.0 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
