824 struct ata_port {  struct
826 	struct ata_port_operations *ops;  argument
827 	spinlock_t		*lock;
830 	unsigned long		flags;	/* ATA_FLAG_xxx */
832 	unsigned int		pflags; /* ATA_PFLAG_xxx */
833 	unsigned int		print_id; /* user visible unique port ID */
834 	unsigned int            local_port_no; /* host local port num */
835 	unsigned int		port_no; /* 0 based port no. inside the host */
838 	struct ata_ioports	ioaddr;	/* ATA cmd/ctl/dma register blocks */
839 	u8			ctl;	/* cache of ATA control register */
840 	u8			last_ctl;	/* Cache last written value */
841 	struct ata_link*	sff_pio_task_link; /* link currently used */
842 	struct delayed_work	sff_pio_task;
867 	struct ata_port_stats	stats;  argument
868 	struct ata_host		*host;
869 	struct device 		*dev;
870 	struct device		tdev;
872 	struct mutex		scsi_scan_mutex;
873 	struct delayed_work	hotplug_task;
874 	struct work_struct	scsi_rescan_task;
876 	unsigned int		hsm_task_state;
878 	u32			msg_enable;
879 	struct list_head	eh_done_q;
880 	wait_queue_head_t	eh_wait_q;
881 	int			eh_tries;
882 	struct completion	park_req_pending;
907 struct ata_port_operations {  argument
920 	int  (*cable_detect)(struct ata_port *ap);  argument