808 struct ata_port {  struct
810 	struct ata_port_operations *ops;  argument
811 	spinlock_t		*lock;
814 	unsigned long		flags;	/* ATA_FLAG_xxx */
816 	unsigned int		pflags; /* ATA_PFLAG_xxx */
817 	unsigned int		print_id; /* user visible unique port ID */
818 	unsigned int            local_port_no; /* host local port num */
819 	unsigned int		port_no; /* 0 based port no. inside the host */
822 	struct ata_ioports	ioaddr;	/* ATA cmd/ctl/dma register blocks */
823 	u8			ctl;	/* cache of ATA control register */
824 	u8			last_ctl;	/* Cache last written value */
825 	struct ata_link*	sff_pio_task_link; /* link currently used */
826 	struct delayed_work	sff_pio_task;
851 	struct ata_port_stats	stats;  argument
852 	struct ata_host		*host;
853 	struct device 		*dev;
854 	struct device		tdev;
856 	struct mutex		scsi_scan_mutex;
857 	struct delayed_work	hotplug_task;
858 	struct work_struct	scsi_rescan_task;
860 	unsigned int		hsm_task_state;
862 	u32			msg_enable;
863 	struct list_head	eh_done_q;
864 	wait_queue_head_t	eh_wait_q;
865 	int			eh_tries;
866 	struct completion	park_req_pending;
891 struct ata_port_operations {  argument
904 	int  (*cable_detect)(struct ata_port *ap);  argument