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| author | Gerd Hoffmann <kraxel@redhat.com> | 2019-02-27 15:44:41 +0100 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2019-02-28 09:09:02 +0100 |
| commit | 98f41dc3b3eeabfc80d5d5eb1c1a6294ff59b4ec (patch) | |
| tree | 3249125249e83bbd2813222f7e4264ff5af44e1e /drivers/gpu/drm/virtio/virtgpu_prime.c | |
| parent | 873f51d43439d554f7299e88edfb208924bef6eb (diff) | |
| download | linux-98f41dc3b3eeabfc80d5d5eb1c1a6294ff59b4ec.tar.bz2 | |
drm/virtio: implement prime export
Just run drm_prime_pages_to_sg() on the ttm pages list to get an
sg_table for export. The pages list is created at object initialization
time, so there should be no need to handle an unpopulated page list.
Add a sanity check nevertheless.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20190227144441.6755-4-kraxel@redhat.com
Diffstat (limited to 'drivers/gpu/drm/virtio/virtgpu_prime.c')
| -rw-r--r-- | drivers/gpu/drm/virtio/virtgpu_prime.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/virtio/virtgpu_prime.c b/drivers/gpu/drm/virtio/virtgpu_prime.c index 4352f9506440..22ef151410e0 100644 --- a/drivers/gpu/drm/virtio/virtgpu_prime.c +++ b/drivers/gpu/drm/virtio/virtgpu_prime.c @@ -28,6 +28,18 @@ * device that might share buffers with virtgpu */ +struct sg_table *virtgpu_gem_prime_get_sg_table(struct drm_gem_object *obj) +{ + struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj); + + if (!bo->tbo.ttm->pages || !bo->tbo.ttm->num_pages) + /* should not happen */ + return ERR_PTR(-EINVAL); + + return drm_prime_pages_to_sg(bo->tbo.ttm->pages, + bo->tbo.ttm->num_pages); +} + void *virtgpu_gem_prime_vmap(struct drm_gem_object *obj) { struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj); |