Currently, virtio uses its own dumb_map_offset implementation,
virtio_gpu_mode_dumb_mmap. It works similarly to generic implementation,
drm_gem_dumb_map_offset, and using the generic implementation is
preferable (and making drivers to do so is a task stated on the DRM
subsystem's TODO list).
Thus, make driver use the generic implementation. This includes
VIRTGPU_MAP ioctl so it cannot be used to circumvent rules imposed by
drm_gem_dumb_map_offset (imported objects cannot be mapped).
Signed-off-by: Peter Shkenev <mustela@erminea.space>
---
Changes in v2:
- Remove excessive include of drm_gem.h from virtgpu_ioctl.h
- Remove obsoleted virtio_gpu_mode_dumb_mmap prototype from
virtgpu_drv.h
drivers/gpu/drm/virtio/virtgpu_drv.c | 1 -
drivers/gpu/drm/virtio/virtgpu_drv.h | 3 ---
drivers/gpu/drm/virtio/virtgpu_gem.c | 15 ---------------
drivers/gpu/drm/virtio/virtgpu_ioctl.c | 2 +-
4 files changed, 1 insertion(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.c b/drivers/gpu/drm/virtio/virtgpu_drv.c
index ffca6e2e1c9a..909808398d66 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.c
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.c
@@ -184,7 +184,6 @@ static const struct drm_driver driver = {
.postclose = virtio_gpu_driver_postclose,
.dumb_create = virtio_gpu_mode_dumb_create,
- .dumb_map_offset = virtio_gpu_mode_dumb_mmap,
DRM_FBDEV_SHMEM_DRIVER_OPS,
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h
index 64c236169db8..76f6f29f819a 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -301,9 +301,6 @@ void virtio_gpu_gem_object_close(struct drm_gem_object *obj,
int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
struct drm_device *dev,
struct drm_mode_create_dumb *args);
-int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
- struct drm_device *dev,
- uint32_t handle, uint64_t *offset_p);
struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents);
struct virtio_gpu_object_array*
diff --git a/drivers/gpu/drm/virtio/virtgpu_gem.c b/drivers/gpu/drm/virtio/virtgpu_gem.c
index 7db48d17ee3a..aefbb49481f1 100644
--- a/drivers/gpu/drm/virtio/virtgpu_gem.c
+++ b/drivers/gpu/drm/virtio/virtgpu_gem.c
@@ -99,21 +99,6 @@ int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
return ret;
}
-int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
- struct drm_device *dev,
- uint32_t handle, uint64_t *offset_p)
-{
- struct drm_gem_object *gobj;
-
- BUG_ON(!offset_p);
- gobj = drm_gem_object_lookup(file_priv, handle);
- if (gobj == NULL)
- return -ENOENT;
- *offset_p = drm_vma_node_offset_addr(&gobj->vma_node);
- drm_gem_object_put(gobj);
- return 0;
-}
-
int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
struct drm_file *file)
{
diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
index e4f76f315550..112142f4b618 100644
--- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c
+++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
@@ -80,7 +80,7 @@ static int virtio_gpu_map_ioctl(struct drm_device *dev, void *data,
struct virtio_gpu_device *vgdev = dev->dev_private;
struct drm_virtgpu_map *virtio_gpu_map = data;
- return virtio_gpu_mode_dumb_mmap(file, vgdev->ddev,
+ return drm_gem_dumb_map_offset(file, vgdev->ddev,
virtio_gpu_map->handle,
&virtio_gpu_map->offset);
}
--
2.47.0
