On Fri, Apr 26, 2019 at 7:33 AM Gerd Hoffmann <kraxel@xxxxxxxxxx> wrote:
>
> This reverts commit f4c34b1e2a37d5676180901fa6ff188bcb6371f8.
>
> Simliar to commit a0cecc23cfcb Revert "drm/virtio: drop prime
> import/export callbacks". We have to do the same with qxl,
> for the same reasons (it breaks DRI3).
>
> Drop the WARN_ON_ONCE().
>
> Fixes: f4c34b1e2a37d5676180901fa6ff188bcb6371f8
> Signed-off-by: Gerd Hoffmann <kraxel@xxxxxxxxxx>
Maybe we need some helpers for virtual drivers which only allow
self-reimport and nothing else at all? I think there's qxl, virgl,
vmwgfx and maybe also vbox one who could use this ... Just a quick
idea.
-Daniel
> ---
> drivers/gpu/drm/qxl/qxl_drv.c | 4 ++++
> drivers/gpu/drm/qxl/qxl_prime.c | 12 ++++++++++++
> 2 files changed, 16 insertions(+)
>
> diff --git a/drivers/gpu/drm/qxl/qxl_drv.c b/drivers/gpu/drm/qxl/qxl_drv.c
> index 578d867a81d5..f33e349c4ec5 100644
> --- a/drivers/gpu/drm/qxl/qxl_drv.c
> +++ b/drivers/gpu/drm/qxl/qxl_drv.c
> @@ -255,10 +255,14 @@ static struct drm_driver qxl_driver = {
> #if defined(CONFIG_DEBUG_FS)
> .debugfs_init = qxl_debugfs_init,
> #endif
> + .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
> + .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
> .gem_prime_export = drm_gem_prime_export,
> .gem_prime_import = drm_gem_prime_import,
> .gem_prime_pin = qxl_gem_prime_pin,
> .gem_prime_unpin = qxl_gem_prime_unpin,
> + .gem_prime_get_sg_table = qxl_gem_prime_get_sg_table,
> + .gem_prime_import_sg_table = qxl_gem_prime_import_sg_table,
> .gem_prime_vmap = qxl_gem_prime_vmap,
> .gem_prime_vunmap = qxl_gem_prime_vunmap,
> .gem_prime_mmap = qxl_gem_prime_mmap,
> diff --git a/drivers/gpu/drm/qxl/qxl_prime.c b/drivers/gpu/drm/qxl/qxl_prime.c
> index 8b448eca1cd9..114653b471c6 100644
> --- a/drivers/gpu/drm/qxl/qxl_prime.c
> +++ b/drivers/gpu/drm/qxl/qxl_prime.c
> @@ -42,6 +42,18 @@ void qxl_gem_prime_unpin(struct drm_gem_object *obj)
> qxl_bo_unpin(bo);
> }
>
> +struct sg_table *qxl_gem_prime_get_sg_table(struct drm_gem_object *obj)
> +{
> + return ERR_PTR(-ENOSYS);
> +}
> +
> +struct drm_gem_object *qxl_gem_prime_import_sg_table(
> + struct drm_device *dev, struct dma_buf_attachment *attach,
> + struct sg_table *table)
> +{
> + return ERR_PTR(-ENOSYS);
> +}
> +
> void *qxl_gem_prime_vmap(struct drm_gem_object *obj)
> {
> struct qxl_bo *bo = gem_to_qxl_bo(obj);
> --
> 2.18.1
>
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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