[mirror_ubuntu-bionic-kernel.git] / include / drm / drm_gem_cma_helper.h

#ifndef __DRM_GEM_CMA_HELPER_H__
#define __DRM_GEM_CMA_HELPER_H__

struct drm_gem_cma_object {
	struct drm_gem_object base;
	dma_addr_t paddr;
	struct sg_table *sgt;

	/* For objects with DMA memory allocated by GEM CMA */
	void *vaddr;
};

static inline struct drm_gem_cma_object *
to_drm_gem_cma_obj(struct drm_gem_object *gem_obj)
{
	return container_of(gem_obj, struct drm_gem_cma_object, base);
}

/* free gem object. */
void drm_gem_cma_free_object(struct drm_gem_object *gem_obj);

/* create memory region for drm framebuffer. */
int drm_gem_cma_dumb_create(struct drm_file *file_priv,
		struct drm_device *drm, struct drm_mode_create_dumb *args);

/* map memory region for drm framebuffer to user space. */
int drm_gem_cma_dumb_map_offset(struct drm_file *file_priv,
		struct drm_device *drm, uint32_t handle, uint64_t *offset);

/* set vm_flags and we can change the vm attribute to other one at here. */
int drm_gem_cma_mmap(struct file *filp, struct vm_area_struct *vma);

/*
 * destroy memory region allocated.
 *	- a gem handle and physical memory region pointed by a gem object
 *	would be released by drm_gem_handle_delete().
 */
int drm_gem_cma_dumb_destroy(struct drm_file *file_priv,
		struct drm_device *drm, unsigned int handle);

/* allocate physical memory. */
struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm,
		unsigned int size);

extern const struct vm_operations_struct drm_gem_cma_vm_ops;

#ifdef CONFIG_DEBUG_FS
void drm_gem_cma_describe(struct drm_gem_cma_object *obj, struct seq_file *m);
#endif

struct dma_buf *drm_gem_cma_dmabuf_export(struct drm_device *drm_dev,
					  struct drm_gem_object *obj,
					  int flags);
struct drm_gem_object *drm_gem_cma_dmabuf_import(struct drm_device *drm_dev,
						 struct dma_buf *dma_buf);

#endif /* __DRM_GEM_CMA_HELPER_H__ */
Commit	Line	Data
b9d47450 SH	1	#ifndef __DRM_GEM_CMA_HELPER_H__
	2	#define __DRM_GEM_CMA_HELPER_H__
	3
	4	struct drm_gem_cma_object {
	5	struct drm_gem_object base;
	6	dma_addr_t paddr;
71d7282a LP	7	struct sg_table *sgt;
	8
	9	/* For objects with DMA memory allocated by GEM CMA */
b9d47450 SH	10	void *vaddr;
	11	};
	12
	13	static inline struct drm_gem_cma_object *
	14	to_drm_gem_cma_obj(struct drm_gem_object *gem_obj)
	15	{
	16	return container_of(gem_obj, struct drm_gem_cma_object, base);
	17	}
	18
	19	/* free gem object. */
	20	void drm_gem_cma_free_object(struct drm_gem_object *gem_obj);
	21
	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);
	25
	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);
	29
	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);
	32
	33	/*
	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().
	37	*/
	38	int drm_gem_cma_dumb_destroy(struct drm_file *file_priv,
	39	struct drm_device *drm, unsigned int handle);
	40
	41	/* allocate physical memory. */
	42	struct drm_gem_cma_object drm_gem_cma_create(struct drm_device drm,
	43	unsigned int size);
	44
	45	extern const struct vm_operations_struct drm_gem_cma_vm_ops;
	46
6f646095 RC	47	#ifdef CONFIG_DEBUG_FS
	48	void drm_gem_cma_describe(struct drm_gem_cma_object obj, struct seq_file m);
	49	#endif
	50
71d7282a LP	51	struct dma_buf drm_gem_cma_dmabuf_export(struct drm_device drm_dev,
	52	struct drm_gem_object *obj,
	53	int flags);
	54	struct drm_gem_object drm_gem_cma_dmabuf_import(struct drm_device drm_dev,
	55	struct dma_buf *dma_buf);
	56
b9d47450	57	#endif /* __DRM_GEM_CMA_HELPER_H__ */