diff options
| author | Ezequiel Garcia <ezequiel@collabora.com> | 2018-09-25 19:16:06 +0300 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2018-09-26 09:05:07 +0300 |
| commit | a03fb71716ee60d1d763f1f27773cbbaec1359ed (patch) | |
| tree | d1636dd2de9dff42aaad4e5fd7e8a11ec7e65d95 /drivers/gpu/drm/virtio/virtgpu_prime.c | |
| parent | a20c4173c4219d85ba7775fde584cd34305a0b3d (diff) | |
| download | linux-a03fb71716ee60d1d763f1f27773cbbaec1359ed.tar.xz | |
virtio: Support prime objects vmap/vunmap
Implement vmap/vunmap so we can export dmabufs to
other drivers, such as video4linux.
Tested with a virtio-gpu / vivid (virtual capture driver)
pipeline, where the vivid driver imports the dmabufs exported
by virtio-gpu.
Note that dma_buf_vmap() does its own vmap counting, so
it's not needed to take care of it in the driver.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20180925161606.17980-4-ezequiel@collabora.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/virtio/virtgpu_prime.c')
| -rw-r--r-- | drivers/gpu/drm/virtio/virtgpu_prime.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/gpu/drm/virtio/virtgpu_prime.c b/drivers/gpu/drm/virtio/virtgpu_prime.c index d27a1688714f..86ce0ae93f59 100644 --- a/drivers/gpu/drm/virtio/virtgpu_prime.c +++ b/drivers/gpu/drm/virtio/virtgpu_prime.c @@ -55,13 +55,18 @@ struct drm_gem_object *virtgpu_gem_prime_import_sg_table( void *virtgpu_gem_prime_vmap(struct drm_gem_object *obj) { - WARN_ONCE(1, "not implemented"); - return ERR_PTR(-ENODEV); + struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj); + int ret; + + ret = virtio_gpu_object_kmap(bo); + if (ret) + return NULL; + return bo->vmap; } void virtgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr) { - WARN_ONCE(1, "not implemented"); + virtio_gpu_object_kunmap(gem_to_virtio_gpu_obj(obj)); } int virtgpu_gem_prime_mmap(struct drm_gem_object *obj, |