729 struct drm_device {  struct
730 	struct list_head legacy_dev_list;/**< list of devices per driver for stealth attach cleanup */
731 	int if_version;			/**< Highest interface version set */
756 	spinlock_t buf_lock;		/**< For drm_device::buf_use and a few other things. */  argument
757 	int buf_use;			/**< Buffers in use -- cannot alloc */
781 	struct drm_device_dma *dma;		/**< Optional pointer for DMA support */  argument
787 	__volatile__ long context_flag;	/**< Context swapping flag */
788 	int last_context;		/**< Last current context */
793 	bool irq_enabled;
794 	int irq;
802 	bool vblank_disable_allowed;
812 	bool vblank_disable_immediate;
815 	struct drm_vblank_crtc *vblank;
817 …_t vblank_time_lock;    /**< Protects vblank count and time updates during vblank enable/disable */
818 	spinlock_t vbl_lock;
820 	u32 max_vblank_count;           /**< size of vblank counter register */
825 	struct list_head vblank_event_list;
826 	spinlock_t event_lock;
830 	struct drm_agp_head *agp;	/**< AGP data */
832 	struct pci_dev *pdev;		/**< PCI device structure */
834 	struct pci_controller *hose;
837 	struct platform_device *platformdev; /**< Platform device struture */
838 	struct virtio_device *virtdev;
840 	struct drm_sg_mem *sg;	/**< Scatter gather memory */
841 	unsigned int num_crtcs;                  /**< Number of CRTCs on this device */
843 	struct {
867 static __inline__ int drm_core_check_feature(struct drm_device *dev,  in drm_core_check_feature()  argument