For upcoming blob resources, userspace can specify that the
resource will be used for cross-device sharing. This is mainly
for exportable blobs that will only shared with the virtgpu
display but not across devices.
Signed-off-by: Gurchetan Singh <gurchetansingh@xxxxxxxxxxxx>
Acked-by: Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx>
---
drivers/gpu/drm/virtio/virtgpu_drv.h | 2 ++
drivers/gpu/drm/virtio/virtgpu_prime.c | 42 ++++++++++++++++++--------
2 files changed, 31 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h
index e1143a00017c5..bbbe28f8b9436 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -432,6 +432,8 @@ bool virtio_gpu_is_shmem(struct virtio_gpu_object *bo);
int virtio_gpu_resource_id_get(struct virtio_gpu_device *vgdev,
uint32_t *resid);
/* virtgpu_prime.c */
+int virtio_gpu_resource_assign_uuid(struct virtio_gpu_device *vgdev,
+ struct virtio_gpu_object *bo);
struct dma_buf *virtgpu_gem_prime_export(struct drm_gem_object *obj,
int flags);
struct drm_gem_object *virtgpu_gem_prime_import(struct drm_device *dev,
diff --git a/drivers/gpu/drm/virtio/virtgpu_prime.c b/drivers/gpu/drm/virtio/virtgpu_prime.c
index 3552db128ba3d..1ef1e2f226333 100644
--- a/drivers/gpu/drm/virtio/virtgpu_prime.c
+++ b/drivers/gpu/drm/virtio/virtgpu_prime.c
@@ -59,6 +59,24 @@ const struct virtio_dma_buf_ops virtgpu_dmabuf_ops = {
.get_uuid = virtgpu_virtio_get_uuid,
};
+int virtio_gpu_resource_assign_uuid(struct virtio_gpu_device *vgdev,
+ struct virtio_gpu_object *bo)
+{
+ int ret;
+ struct virtio_gpu_object_array *objs;
+
+ objs = virtio_gpu_array_alloc(1);
+ if (!objs)
+ return -ENOMEM;
+
+ virtio_gpu_array_add_obj(objs, &bo->base.base);
+ ret = virtio_gpu_cmd_resource_assign_uuid(vgdev, objs);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
struct dma_buf *virtgpu_gem_prime_export(struct drm_gem_object *obj,
int flags)
{
@@ -66,22 +84,20 @@ struct dma_buf *virtgpu_gem_prime_export(struct drm_gem_object *obj,
struct drm_device *dev = obj->dev;
struct virtio_gpu_device *vgdev = dev->dev_private;
struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj);
- struct virtio_gpu_object_array *objs;
int ret = 0;
+ bool blob = bo->host3d_blob || bo->guest_blob;
DEFINE_DMA_BUF_EXPORT_INFO(exp_info);
- if (vgdev->has_resource_assign_uuid) {
- objs = virtio_gpu_array_alloc(1);
- if (!objs)
- return ERR_PTR(-ENOMEM);
- virtio_gpu_array_add_obj(objs, &bo->base.base);
-
- ret = virtio_gpu_cmd_resource_assign_uuid(vgdev, objs);
- if (ret)
- return ERR_PTR(ret);
- virtio_gpu_notify(vgdev);
- } else {
- bo->uuid_state = STATE_ERR;
+ if (!blob) {
+ if (vgdev->has_resource_assign_uuid) {
+ ret = virtio_gpu_resource_assign_uuid(vgdev, bo);
+ if (ret)
+ return ERR_PTR(ret);
+
+ virtio_gpu_notify(vgdev);
+ } else {
+ bo->uuid_state = STATE_ERR;
+ }
}
exp_info.ops = &virtgpu_dmabuf_ops.ops;
--
2.26.2
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