706 struct drm_device {  struct
707 	struct list_head legacy_dev_list;/**< list of devices per driver for stealth attach cleanup */
708 	int if_version;			/**< Highest interface version set */
733 	spinlock_t buf_lock;		/**< For drm_device::buf_use and a few other things. */  argument
734 	int buf_use;			/**< Buffers in use -- cannot alloc */
758 	struct drm_device_dma *dma;		/**< Optional pointer for DMA support */  argument
764 	__volatile__ long context_flag;	/**< Context swapping flag */
765 	int last_context;		/**< Last current context */
770 	bool irq_enabled;
771 	int irq;
779 	bool vblank_disable_allowed;
789 	bool vblank_disable_immediate;
792 	struct drm_vblank_crtc *vblank;
794 …_t vblank_time_lock;    /**< Protects vblank count and time updates during vblank enable/disable */
795 	spinlock_t vbl_lock;
797 	u32 max_vblank_count;           /**< size of vblank counter register */
802 	struct list_head vblank_event_list;
803 	spinlock_t event_lock;
807 	struct drm_agp_head *agp;	/**< AGP data */
809 	struct pci_dev *pdev;		/**< PCI device structure */
811 	struct pci_controller *hose;
814 	struct platform_device *platformdev; /**< Platform device struture */
816 	struct drm_sg_mem *sg;	/**< Scatter gather memory */
817 	unsigned int num_crtcs;                  /**< Number of CRTCs on this device */
818 	sigset_t sigmask;
820 	struct {
844 static __inline__ int drm_core_check_feature(struct drm_device *dev,  in drm_core_check_feature()  argument