1028 struct drm_device {  struct
1035 	spinlock_t count_lock;		/**< For inuse, drm_device::open_count, drm_device::buf_use */  argument
1036 	struct mutex struct_mutex;	/**< For others */
1041 	int open_count;			/**< Outstanding files open */
1042 	atomic_t ioctl_count;		/**< Outstanding IOCTLs pending */
1043 	atomic_t vma_count;		/**< Outstanding vma areas open */
1044 	int buf_use;			/**< Buffers in use -- cannot alloc */
1045 	atomic_t buf_alloc;		/**< Buffer allocation in progress */
1050 	unsigned long counters;
1051 	enum drm_stat_type types[15];
1052 	atomic_t counts[15];
1055 	struct list_head filelist;
1081 	struct drm_device_dma *dma;		/**< Optional pointer for DMA support */  argument
1086 	int irq_enabled;		/**< True if irq handler is enabled */
1087 	__volatile__ long context_flag;	/**< Context swapping flag */
1088 	__volatile__ long interrupt_flag; /**< Interruption handler flag */
1089 	__volatile__ long dma_flag;	/**< DMA dispatch flag */
1090 	wait_queue_head_t context_wait;	/**< Processes waiting on ctx switch */
1091 	int last_checked;		/**< Last context checked for DMA */
1092 	int last_context;		/**< Last current context */
1093 	unsigned long last_switch;	/**< jiffies at last context switch */
1096 	struct work_struct work;
1106 	int vblank_disable_allowed;
1108 	wait_queue_head_t *vbl_queue;   /**< VBLANK wait queue */
1109 …_count;        /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
1110 …blank_time;   /**< timestamp of current vblank_count (drivers must alloc right number of fields) */
1111 …_t vblank_time_lock;    /**< Protects vblank count and time updates during vblank enable/disable */
1112 	spinlock_t vbl_lock;
1113 	atomic_t *vblank_refcount;      /* number of users of vblank interruptsper crtc */
1114 	u32 *last_vblank;               /* protected by dev->vbl_lock, used */
1116 	int *vblank_enabled;            /* so we don't call enable more than
1118 	int *vblank_inmodeset;          /* Display driver is setting mode */
1119 	u32 *last_vblank_wait;		/* Last vblank seqno waited per CRTC */
1120 	struct timer_list vblank_disable_timer;
1122 	u32 max_vblank_count;           /**< size of vblank counter register */
1127 	struct list_head vblank_event_list;
1128 	spinlock_t event_lock;
1131 	cycles_t ctx_start;
1132 	cycles_t lck_start;
1134 	struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
1135 	wait_queue_head_t buf_readers;	/**< Processes waiting to read */
1136 	wait_queue_head_t buf_writers;	/**< Processes waiting to ctx switch */
1138 	struct drm_agp_head *agp;	/**< AGP data */
1140 	struct device *dev;             /**< Device structure */
1141 	struct pci_dev *pdev;		/**< PCI device structure */
1142 	int pci_vendor;			/**< PCI vendor id */
1143 	int pci_device;			/**< PCI device id */
1145 	struct pci_controller *hose;
1148 	struct platform_device *platformdev; /**< Platform device struture */
1149 	struct usb_device *usbdev;
1151 	struct drm_sg_mem *sg;	/**< Scatter gather memory */
1152 	unsigned int num_crtcs;                  /**< Number of CRTCs on this device */
1153 	void *dev_private;		/**< device private data */
1154 	void *mm_private;
1155 	struct address_space *dev_mapping;
1179 static __inline__ int drm_core_check_feature(struct drm_device *dev,  in drm_core_check_feature()  argument