1 #ifndef __DRM_GEM_CMA_HELPER_H__
2 #define __DRM_GEM_CMA_HELPER_H__
4 struct drm_gem_cma_object {
5 struct drm_gem_object base;
9 /* For objects with DMA memory allocated by GEM CMA */
13 static inline struct drm_gem_cma_object *
14 to_drm_gem_cma_obj(struct drm_gem_object *gem_obj)
16 return container_of(gem_obj, struct drm_gem_cma_object, base);
19 /* free gem object. */
20 void drm_gem_cma_free_object(struct drm_gem_object *gem_obj);
22 /* create memory region for drm framebuffer. */
23 int drm_gem_cma_dumb_create(struct drm_file *file_priv,
24 struct drm_device *drm, struct drm_mode_create_dumb *args);
26 /* map memory region for drm framebuffer to user space. */
27 int drm_gem_cma_dumb_map_offset(struct drm_file *file_priv,
28 struct drm_device *drm, uint32_t handle, uint64_t *offset);
30 /* set vm_flags and we can change the vm attribute to other one at here. */
31 int drm_gem_cma_mmap(struct file *filp, struct vm_area_struct *vma);
34 * destroy memory region allocated.
35 * - a gem handle and physical memory region pointed by a gem object
36 * would be released by drm_gem_handle_delete().
38 int drm_gem_cma_dumb_destroy(struct drm_file *file_priv,
39 struct drm_device *drm, unsigned int handle);
41 /* allocate physical memory. */
42 struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm,
45 extern const struct vm_operations_struct drm_gem_cma_vm_ops;
47 #ifdef CONFIG_DEBUG_FS
48 void drm_gem_cma_describe(struct drm_gem_cma_object *obj, struct seq_file *m);
51 struct dma_buf *drm_gem_cma_dmabuf_export(struct drm_device *drm_dev,
52 struct drm_gem_object *obj,
54 struct drm_gem_object *drm_gem_cma_dmabuf_import(struct drm_device *drm_dev,
55 struct dma_buf *dma_buf);
57 #endif /* __DRM_GEM_CMA_HELPER_H__ */