drivers/gpu/drm/armada/armada_gem.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/armada/armada_gem.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/armada/armada_gem.h
Extension
.h
Size
1430 bytes
Lines
46
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct armada_gem_object {
	struct drm_gem_object	obj;
	void			*addr;
	phys_addr_t		phys_addr;
	resource_size_t		dev_addr;
	bool			mapped;
	struct drm_mm_node	*linear;	/* for linear backed */
	struct page		*page;		/* for page backed */
	struct sg_table		*sgt;		/* for imported */
	void			(*update)(void *);
	void			*update_data;
};

#define drm_to_armada_gem(o) container_of(o, struct armada_gem_object, obj)

void armada_gem_free_object(struct drm_gem_object *);
int armada_gem_linear_back(struct drm_device *, struct armada_gem_object *);
void *armada_gem_map_object(struct drm_device *, struct armada_gem_object *);
struct armada_gem_object *armada_gem_alloc_private_object(struct drm_device *,
	size_t);
int armada_gem_dumb_create(struct drm_file *, struct drm_device *,
	struct drm_mode_create_dumb *);
struct dma_buf *armada_gem_prime_export(struct drm_gem_object *obj, int flags);
struct drm_gem_object *armada_gem_prime_import(struct drm_device *,
	struct dma_buf *);
int armada_gem_map_import(struct armada_gem_object *);

static inline struct armada_gem_object *armada_gem_object_lookup(
	struct drm_file *dfile, unsigned handle)
{
	struct drm_gem_object *obj = drm_gem_object_lookup(dfile, handle);

	return obj ? drm_to_armada_gem(obj) : NULL;
}
#endif

Annotation

Implementation Notes