[RFC PATCHv2 0/3] dma_buf import support for vgem
labbott at redhat.com
Wed Apr 26 21:12:27 UTC 2017
This is v2 of my proposal to add dma_buf import functions for vgem.
Big changes from v1:
- A device is required for dma_buf attach to work. The existing vgem driver
intentionally does not use one as it provides a good way to test the DRM
framework. This approach instead puts a dummy platform device in the existing
drm_device->platformdev field and uses that for attaching.
- Native vgem buffers can still be faulted in a page at a time without
requiring the entire buffer be resident in memory.
I'm still marking this as RFC as I haven't had a chance to finish
a userspace test that can be integrated into igt.
Feedback appreciated as always.
Laura Abbott (3):
drm/vgem: Add a dummy platform device
drm/prime: Introduce drm_gem_prime_import_platform
drm/vgem: Enable dmabuf import interfaces
drivers/gpu/drm/drm_prime.c | 23 +++++-
drivers/gpu/drm/vgem/vgem_drv.c | 150 +++++++++++++++++++++++++++++++---------
drivers/gpu/drm/vgem/vgem_drv.h | 2 +
include/drm/drmP.h | 5 ++
4 files changed, 145 insertions(+), 35 deletions(-)
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