diff options
| author | Jiandi An <jiandi.an@amd.com> | 2018-09-19 07:09:53 +0000 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2018-09-19 13:33:06 +0200 |
| commit | 8f44ca223345a7d02e18ed4e70ff95178434e137 (patch) | |
| tree | a7c73784d3c2f6782bd0d41f86468795960cb49f /drivers/gpu/drm/virtio/virtgpu_vq.c | |
| parent | 3536faefc03d48e97891ed7fc542ff85ce00a4e1 (diff) | |
| download | talos-op-linux-8f44ca223345a7d02e18ed4e70ff95178434e137.tar.gz talos-op-linux-8f44ca223345a7d02e18ed4e70ff95178434e137.zip | |
drm/virtio: add dma sync for dma mapped virtio gpu framebuffer pages
With virtio gpu ttm-pages being dma mapped, dma sync is needed when
swiotlb is used as bounce buffers, before TRANSFER_TO_HOST_2D/3D
commands are sent.
Signed-off-by: Jiandi An <jiandi.an@amd.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20180919070931.91168-1-jiandi.an@amd.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/virtio/virtgpu_vq.c')
| -rw-r--r-- | drivers/gpu/drm/virtio/virtgpu_vq.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c index 5784c3ea8767..df32811f2c3e 100644 --- a/drivers/gpu/drm/virtio/virtgpu_vq.c +++ b/drivers/gpu/drm/virtio/virtgpu_vq.c @@ -490,6 +490,15 @@ void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev, { struct virtio_gpu_transfer_to_host_2d *cmd_p; struct virtio_gpu_vbuffer *vbuf; + struct virtio_gpu_fbdev *vgfbdev = vgdev->vgfbdev; + struct virtio_gpu_framebuffer *fb = &vgfbdev->vgfb; + struct virtio_gpu_object *obj = gem_to_virtio_gpu_obj(fb->base.obj[0]); + bool use_dma_api = !virtio_has_iommu_quirk(vgdev->vdev); + + if (use_dma_api) + dma_sync_sg_for_device(vgdev->vdev->dev.parent, + obj->pages->sgl, obj->pages->nents, + DMA_TO_DEVICE); cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); memset(cmd_p, 0, sizeof(*cmd_p)); @@ -789,6 +798,15 @@ void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev, { struct virtio_gpu_transfer_host_3d *cmd_p; struct virtio_gpu_vbuffer *vbuf; + struct virtio_gpu_fbdev *vgfbdev = vgdev->vgfbdev; + struct virtio_gpu_framebuffer *fb = &vgfbdev->vgfb; + struct virtio_gpu_object *obj = gem_to_virtio_gpu_obj(fb->base.obj[0]); + bool use_dma_api = !virtio_has_iommu_quirk(vgdev->vdev); + + if (use_dma_api) + dma_sync_sg_for_device(vgdev->vdev->dev.parent, + obj->pages->sgl, obj->pages->nents, + DMA_TO_DEVICE); cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); memset(cmd_p, 0, sizeof(*cmd_p)); |
