drm/virtio: Improve DMA API usage for shmem BOs

Browse source

DRM API requires the DRM's driver to be backed with the device that can
be used for generic DMA operations. The VirtIO-GPU device can't perform
DMA operations if it uses PCI transport because PCI device driver creates
a virtual VirtIO-GPU device that isn't associated with the PCI. Use PCI's
GPU device for the DRM's device instead of the VirtIO-GPU device and drop
DMA-related hacks from the VirtIO-GPU driver.

Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20220630200726.1884320-8-dmitry.osipenko@collabora.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

...

This commit is contained in:

Dmitry Osipenko 2022-06-30 23:07:24 +03:00 • committed by Gerd Hoffmann

parent e7fef09233

commit b5c9ed70d1

5 changed files with 32 additions and 99 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

51

drivers/gpu/drm/virtio/virtgpu_drv.c

View file

5

drivers/gpu/drm/virtio/virtgpu_drv.h

View file

7

drivers/gpu/drm/virtio/virtgpu_kms.c

View file

55

drivers/gpu/drm/virtio/virtgpu_object.c

View file

13

drivers/gpu/drm/virtio/virtgpu_vq.c

View file