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Gerd Hoffmann

2019-Jul-02 14:19 UTC

[PATCH v6 15/18] drm/virtio: rework virtio_gpu_transfer_to_host_ioctl fencing

Switch to the virtio_gpu_array_* helper workflow.

Signed-off-by: Gerd Hoffmann <kraxel at redhat.com>
---
 drivers/gpu/drm/virtio/virtgpu_drv.h   |  2 +-
 drivers/gpu/drm/virtio/virtgpu_ioctl.c | 43 ++++++++++++--------------
 drivers/gpu/drm/virtio/virtgpu_vq.c    |  5 ++-
 3 files changed, 25 insertions(+), 25 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h
b/drivers/gpu/drm/virtio/virtgpu_drv.h
index 4df760ba018e..b1f63a21abb6 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -308,10 +308,10 @@ void virtio_gpu_cmd_transfer_from_host_3d(struct
virtio_gpu_device *vgdev,
 					  struct virtio_gpu_object_array *objs,
 					  struct virtio_gpu_fence *fence);
 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
-					struct virtio_gpu_object *bo,
 					uint32_t ctx_id,
 					uint64_t offset, uint32_t level,
 					struct virtio_gpu_box *box,
+					struct virtio_gpu_object_array *objs,
 					struct virtio_gpu_fence *fence);
 void
 virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c
b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
index 56182abdbf36..b220918df6a1 100644
--- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c
+++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
@@ -341,47 +341,44 @@ static int virtio_gpu_transfer_to_host_ioctl(struct
drm_device *dev, void *data,
 	struct virtio_gpu_device *vgdev = dev->dev_private;
 	struct virtio_gpu_fpriv *vfpriv = file->driver_priv;
 	struct drm_virtgpu_3d_transfer_to_host *args = data;
-	struct drm_gem_object *gobj = NULL;
-	struct virtio_gpu_object *qobj = NULL;
+	struct virtio_gpu_object_array *objs;
 	struct virtio_gpu_fence *fence;
 	struct virtio_gpu_box box;
 	int ret;
 	u32 offset = args->offset;
 
-	gobj = drm_gem_object_lookup(file, args->bo_handle);
-	if (gobj == NULL)
+	objs = virtio_gpu_array_from_handles(file, &args->bo_handle, 1);
+	if (objs == NULL)
 		return -ENOENT;
 
-	qobj = gem_to_virtio_gpu_obj(gobj);
-
-	ret = virtio_gpu_object_reserve(qobj);
-	if (ret)
-		goto out;
-
 	convert_to_hw_box(&box, &args->box);
 	if (!vgdev->has_virgl_3d) {
 		virtio_gpu_cmd_transfer_to_host_2d
-			(vgdev, qobj, offset,
+			(vgdev, gem_to_virtio_gpu_obj(objs->objs[0]), offset,
 			 box.w, box.h, box.x, box.y, NULL);
+		virtio_gpu_array_put_free(objs);
 	} else {
+		ret = virtio_gpu_array_lock_resv(objs);
+		if (ret != 0)
+			goto err_put_free;
+
+		ret = -ENOMEM;
 		fence = virtio_gpu_fence_alloc(vgdev);
-		if (!fence) {
-			ret = -ENOMEM;
-			goto out_unres;
-		}
+		if (!fence)
+			goto err_unlock;
+
 		virtio_gpu_cmd_transfer_to_host_3d
-			(vgdev, qobj,
+			(vgdev,
 			 vfpriv ? vfpriv->ctx_id : 0, offset,
-			 args->level, &box, fence);
-		reservation_object_add_excl_fence(qobj->base.base.resv,
-						  &fence->f);
+			 args->level, &box, objs, fence);
 		dma_fence_put(&fence->f);
 	}
+	return 0;
 
-out_unres:
-	virtio_gpu_object_unreserve(qobj);
-out:
-	drm_gem_object_put_unlocked(gobj);
+err_unlock:
+	virtio_gpu_array_unlock_resv(objs);
+err_put_free:
+	virtio_gpu_array_put_free(objs);
 	return ret;
 }
 
diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c
b/drivers/gpu/drm/virtio/virtgpu_vq.c
index bef7036f4508..1c0097de419a 100644
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -899,12 +899,13 @@ virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device
*vgdev,
 }
 
 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
-					struct virtio_gpu_object *bo,
 					uint32_t ctx_id,
 					uint64_t offset, uint32_t level,
 					struct virtio_gpu_box *box,
+					struct virtio_gpu_object_array *objs,
 					struct virtio_gpu_fence *fence)
 {
+	struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]);
 	struct virtio_gpu_transfer_host_3d *cmd_p;
 	struct virtio_gpu_vbuffer *vbuf;
 	bool use_dma_api = !virtio_has_iommu_quirk(vgdev->vdev);
@@ -917,6 +918,8 @@ void virtio_gpu_cmd_transfer_to_host_3d(struct
virtio_gpu_device *vgdev,
 	cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
 	memset(cmd_p, 0, sizeof(*cmd_p));
 
+	vbuf->objs = objs;
+
 	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_TO_HOST_3D);
 	cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id);
 	cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
-- 
2.18.1

Chia-I Wu

2019-Jul-03 19:55 UTC

head link

[PATCH v6 15/18] drm/virtio: rework virtio_gpu_transfer_to_host_ioctl fencing

On Tue, Jul 2, 2019 at 7:19 AM Gerd Hoffmann <kraxel at redhat.com>
wrote:>
> Switch to the virtio_gpu_array_* helper workflow.
>
> Signed-off-by: Gerd Hoffmann <kraxel at redhat.com>
> ---
>  drivers/gpu/drm/virtio/virtgpu_drv.h   |  2 +-
>  drivers/gpu/drm/virtio/virtgpu_ioctl.c | 43 ++++++++++++--------------
>  drivers/gpu/drm/virtio/virtgpu_vq.c    |  5 ++-
>  3 files changed, 25 insertions(+), 25 deletions(-)
>
> diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h
b/drivers/gpu/drm/virtio/virtgpu_drv.h
> index 4df760ba018e..b1f63a21abb6 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_drv.h
> +++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
> @@ -308,10 +308,10 @@ void virtio_gpu_cmd_transfer_from_host_3d(struct
virtio_gpu_device *vgdev,
>                                           struct virtio_gpu_object_array
*objs,
>                                           struct virtio_gpu_fence *fence);
>  void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
> -                                       struct virtio_gpu_object *bo,
>                                         uint32_t ctx_id,
>                                         uint64_t offset, uint32_t level,
>                                         struct virtio_gpu_box *box,
> +                                       struct virtio_gpu_object_array
*objs,
>                                         struct virtio_gpu_fence *fence);
>  void
>  virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
> diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c
b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
> index 56182abdbf36..b220918df6a1 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c
> +++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
> @@ -341,47 +341,44 @@ static int virtio_gpu_transfer_to_host_ioctl(struct
drm_device *dev, void *data,
>         struct virtio_gpu_device *vgdev = dev->dev_private;
>         struct virtio_gpu_fpriv *vfpriv = file->driver_priv;
>         struct drm_virtgpu_3d_transfer_to_host *args = data;
> -       struct drm_gem_object *gobj = NULL;
> -       struct virtio_gpu_object *qobj = NULL;
> +       struct virtio_gpu_object_array *objs;
>         struct virtio_gpu_fence *fence;
>         struct virtio_gpu_box box;
>         int ret;
>         u32 offset = args->offset;
>
> -       gobj = drm_gem_object_lookup(file, args->bo_handle);
> -       if (gobj == NULL)
> +       objs = virtio_gpu_array_from_handles(file, &args->bo_handle,
1);
> +       if (objs == NULL)
>                 return -ENOENT;
>
> -       qobj = gem_to_virtio_gpu_obj(gobj);
> -
> -       ret = virtio_gpu_object_reserve(qobj);
> -       if (ret)
> -               goto out;
> -
>         convert_to_hw_box(&box, &args->box);
>         if (!vgdev->has_virgl_3d) {
>                 virtio_gpu_cmd_transfer_to_host_2d
> -                       (vgdev, qobj, offset,
> +                       (vgdev, gem_to_virtio_gpu_obj(objs->objs[0]),
offset,
>                          box.w, box.h, box.x, box.y, NULL);
> +               virtio_gpu_array_put_free(objs);
Don't we need this in non-3D case as well?>         } else {
> +               ret = virtio_gpu_array_lock_resv(objs);
> +               if (ret != 0)
> +                       goto err_put_free;
> +
> +               ret = -ENOMEM;
>                 fence = virtio_gpu_fence_alloc(vgdev);
> -               if (!fence) {
> -                       ret = -ENOMEM;
> -                       goto out_unres;
> -               }
> +               if (!fence)
> +                       goto err_unlock;
> +
>                 virtio_gpu_cmd_transfer_to_host_3d
> -                       (vgdev, qobj,
> +                       (vgdev,
>                          vfpriv ? vfpriv->ctx_id : 0, offset,
> -                        args->level, &box, fence);
> -               reservation_object_add_excl_fence(qobj->base.base.resv,
> -                                                 &fence->f);
> +                        args->level, &box, objs, fence);
>                 dma_fence_put(&fence->f);
>         }
> +       return 0;
>
> -out_unres:
> -       virtio_gpu_object_unreserve(qobj);
> -out:
> -       drm_gem_object_put_unlocked(gobj);
> +err_unlock:
> +       virtio_gpu_array_unlock_resv(objs);
> +err_put_free:
> +       virtio_gpu_array_put_free(objs);
>         return ret;
>  }
>
> diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c
b/drivers/gpu/drm/virtio/virtgpu_vq.c
> index bef7036f4508..1c0097de419a 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_vq.c
> +++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
> @@ -899,12 +899,13 @@ virtio_gpu_cmd_resource_create_3d(struct
virtio_gpu_device *vgdev,
>  }
>
>  void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
> -                                       struct virtio_gpu_object *bo,
>                                         uint32_t ctx_id,
>                                         uint64_t offset, uint32_t level,
>                                         struct virtio_gpu_box *box,
> +                                       struct virtio_gpu_object_array
*objs,
>                                         struct virtio_gpu_fence *fence)
>  {
> +       struct virtio_gpu_object *bo =
gem_to_virtio_gpu_obj(objs->objs[0]);
>         struct virtio_gpu_transfer_host_3d *cmd_p;
>         struct virtio_gpu_vbuffer *vbuf;
>         bool use_dma_api = !virtio_has_iommu_quirk(vgdev->vdev);
> @@ -917,6 +918,8 @@ void virtio_gpu_cmd_transfer_to_host_3d(struct
virtio_gpu_device *vgdev,
>         cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
>         memset(cmd_p, 0, sizeof(*cmd_p));
>
> +       vbuf->objs = objs;
> +
>         cmd_p->hdr.type =
cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_TO_HOST_3D);
>         cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id);
>         cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
> --
> 2.18.1
>

Gerd Hoffmann

2019-Jul-04 11:51 UTC

head link

[PATCH v6 15/18] drm/virtio: rework virtio_gpu_transfer_to_host_ioctl fencing

Hi,
> >         convert_to_hw_box(&box, &args->box);
> >         if (!vgdev->has_virgl_3d) {
> >                 virtio_gpu_cmd_transfer_to_host_2d
> > -                       (vgdev, qobj, offset,
> > +                       (vgdev,
gem_to_virtio_gpu_obj(objs->objs[0]), offset,
> >                          box.w, box.h, box.x, box.y, NULL);
> > +               virtio_gpu_array_put_free(objs);
> Don't we need this in non-3D case as well?
No, ...
> >                 virtio_gpu_cmd_transfer_to_host_3d
> > -                       (vgdev, qobj,
> > +                       (vgdev,
> >                          vfpriv ? vfpriv->ctx_id : 0, offset,
> > -                        args->level, &box, fence);
> > -              
reservation_object_add_excl_fence(qobj->base.base.resv,
> > -                                                 &fence->f);
> > +                        args->level, &box, objs, fence);
... 3d case passes the objs list to virtio_gpu_cmd_transfer_to_host_3d,
so it gets added to the vbuf and released when the command is finished.

cheers,
  Gerd

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