linux-stable.git/drivers/gpu/drm/virtio/virtgpu_vq.c, branch linux-rolling-lts

drm/virtio: clean up minor codestyle issues

2025-08-20T10:36:45+00:00

Fix codestyle warnings and errors generated by CHECKPATCH in virtio
source files.

Signed-off-by: Athul Raj Kollareth 
Signed-off-by: Dmitry Osipenko 
Link: https://lore.kernel.org/r/20250813062109.5326-1-krathul3152@gmail.com

drm/virtio: Add drm_panic support

2025-02-09T17:36:51+00:00

Virtio gpu supports the drm_panic module, which displays a message to
the screen when a kernel panic occurs. It is supported where it has
vmapped shmem BO.

Signed-off-by: Jocelyn Falempe 
Signed-off-by: Ryosuke Yasuoka 
Tested-by: Dmitry Osipenko 
Reviewed-by: Dmitry Osipenko 
Signed-off-by: Dmitry Osipenko 
Link: https://patchwork.freedesktop.org/patch/msgid/20250206104300.416014-1-ryasuoka@redhat.com

drm/virtio: Set missing bo->attached flag

2025-01-09T13:53:19+00:00

VirtIO-GPU driver now supports detachment of shmem BOs from host, but
doing it only for imported dma-bufs. Mark all shmem BOs as attached, not
just dma-bufs. This is a minor correction since detachment of a non-dmabuf
BOs not supported today.

Signed-off-by: Dmitry Osipenko 
Acked-by: Vivek Kasireddy 
Link: https://patchwork.freedesktop.org/patch/msgid/20241129155357.2265357-1-dmitry.osipenko@collabora.com

drm/virtio: Implement VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING cmd

2024-11-26T09:52:18+00:00

This cmd is useful to let the VMM (i.e, Qemu) know that the backing
store associated with a resource is no longer valid, so that the VMM
can perform any cleanup or unmap operations.

The fence related changes and virtio_gpu_object_detach()/
virtio_gpu_detach_object_fenced() routines are extracted from a
patch by Dmitry Osipenko .

Cc: Gerd Hoffmann 
Cc: Dmitry Osipenko 
Cc: Rob Clark 
Cc: Gurchetan Singh 
Cc: Chia-I Wu 
Signed-off-by: Vivek Kasireddy 
Tested-by: Dmitry Osipenko 
Reviewed-by: Dmitry Osipenko 
Signed-off-by: Dmitry Osipenko 
Link: https://patchwork.freedesktop.org/patch/msgid/20241126031643.3490496-2-vivek.kasireddy@intel.com

drm/virtio: switch to struct drm_edid

2024-05-13T17:12:46+00:00

Prefer struct drm_edid based functions over struct edid.

Signed-off-by: Jani Nikula 
Reviewed-by: Robert Foss 
Signed-off-by: Robert Foss 
Link: https://patchwork.freedesktop.org/patch/msgid/ed6e76a9e94816789ca9caf8775d6a6156877496.1715347488.git.jani.nikula@intel.com

Merge v6.3-rc4 into drm-next

2023-03-29T14:00:23+00:00

I just landed the fence deadline PR from Rob that a bunch of drivers
want/need to apply driver-specific patches. Backmerge -rc4 so that
they don't have to be stuck on -rc2 for no reason at all.

Signed-off-by: Daniel Vetter

Merge drm/drm-fixes into drm-misc-fixes

2023-03-13T09:14:05+00:00

Backmerging to get latest upstream.

Signed-off-by: Thomas Zimmermann

drm/virtio: use strscpy() to instead of strncpy()

2023-02-26T23:58:50+00:00

The implementation of strscpy() is more robust and safer.
That's now the recommended way to copy NUL terminated strings.

Signed-off-by: Xu Panda 
Signed-off-by: Yang Yang 
Signed-off-by: Dmitry Osipenko 
Link: https://patchwork.freedesktop.org/patch/msgid/202212070913161959936@zte.com.cn

drm/virtio: Pass correct device to dma_sync_sgtable_for_device()

2023-02-26T23:39:24+00:00

The "vdev->dev.parent" should be used instead of "vdev->dev" as a device
for which to perform the DMA operation in both
virtio_gpu_cmd_transfer_to_host_2d(3d).

Because the virtio-gpu device "vdev->dev" doesn't really have DMA OPS
assigned to it, but parent (virtio-pci or virtio-mmio) device
"vdev->dev.parent" has. The more, the sgtable in question the code is
trying to sync here was mapped for the parent device (by using its DMA OPS)
previously at:
virtio_gpu_object_shmem_init()->drm_gem_shmem_get_pages_sgt()->
dma_map_sgtable(), so should be synced here for the same parent device.

Fixes: b5c9ed70d1a9 ("drm/virtio: Improve DMA API usage for shmem BOs")
Signed-off-by: Oleksandr Tyshchenko 
Reviewed-by: Dmitry Osipenko 
Signed-off-by: Dmitry Osipenko 
Link: https://patchwork.freedesktop.org/patch/msgid/20230224153450.526222-1-olekstysh@gmail.com

drm/virtio: Spiff out cmd queue/response traces

2023-01-02T14:51:27+00:00

Add a sequence # for more easily matching up cmd/resp, and the # of free
slots in the virtqueue to more easily see starvation issues.

v2: Fix handling of string fields as well

Signed-off-by: Rob Clark 
Reviewed-by: Dmitry Osipenko 
Signed-off-by: Dmitry Osipenko 
Link: https://patchwork.freedesktop.org/patch/msgid/20221130000841.318037-1-robdclark@gmail.com