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- #ifndef S390_DEVICE_H
- #define S390_DEVICE_H
- /*
- * states of the device statemachine
- */
- enum dev_state {
- DEV_STATE_NOT_OPER,
- DEV_STATE_SENSE_PGID,
- DEV_STATE_SENSE_ID,
- DEV_STATE_OFFLINE,
- DEV_STATE_VERIFY,
- DEV_STATE_ONLINE,
- DEV_STATE_W4SENSE,
- DEV_STATE_DISBAND_PGID,
- DEV_STATE_BOXED,
- /* states to wait for i/o completion before doing something */
- DEV_STATE_CLEAR_VERIFY,
- DEV_STATE_TIMEOUT_KILL,
- DEV_STATE_WAIT4IO,
- DEV_STATE_QUIESCE,
- /* special states for devices gone not operational */
- DEV_STATE_DISCONNECTED,
- DEV_STATE_DISCONNECTED_SENSE_ID,
- DEV_STATE_CMFCHANGE,
- /* last element! */
- NR_DEV_STATES
- };
- /*
- * asynchronous events of the device statemachine
- */
- enum dev_event {
- DEV_EVENT_NOTOPER,
- DEV_EVENT_INTERRUPT,
- DEV_EVENT_TIMEOUT,
- DEV_EVENT_VERIFY,
- /* last element! */
- NR_DEV_EVENTS
- };
- struct ccw_device;
- /*
- * action called through jumptable
- */
- typedef void (fsm_func_t)(struct ccw_device *, enum dev_event);
- extern fsm_func_t *dev_jumptable[NR_DEV_STATES][NR_DEV_EVENTS];
- static inline void
- dev_fsm_event(struct ccw_device *cdev, enum dev_event dev_event)
- {
- dev_jumptable[cdev->private->state][dev_event](cdev, dev_event);
- }
- /*
- * Delivers 1 if the device state is final.
- */
- static inline int
- dev_fsm_final_state(struct ccw_device *cdev)
- {
- return (cdev->private->state == DEV_STATE_NOT_OPER ||
- cdev->private->state == DEV_STATE_OFFLINE ||
- cdev->private->state == DEV_STATE_ONLINE ||
- cdev->private->state == DEV_STATE_BOXED);
- }
- extern struct workqueue_struct *ccw_device_work;
- extern struct workqueue_struct *ccw_device_notify_work;
- void io_subchannel_recog_done(struct ccw_device *cdev);
- int ccw_device_cancel_halt_clear(struct ccw_device *);
- int ccw_device_register(struct ccw_device *);
- void ccw_device_do_unreg_rereg(void *);
- void ccw_device_call_sch_unregister(void *);
- int ccw_device_recognition(struct ccw_device *);
- int ccw_device_online(struct ccw_device *);
- int ccw_device_offline(struct ccw_device *);
- /* Function prototypes for device status and basic sense stuff. */
- void ccw_device_accumulate_irb(struct ccw_device *, struct irb *);
- void ccw_device_accumulate_basic_sense(struct ccw_device *, struct irb *);
- int ccw_device_accumulate_and_sense(struct ccw_device *, struct irb *);
- int ccw_device_do_sense(struct ccw_device *, struct irb *);
- /* Function prototypes for sense id stuff. */
- void ccw_device_sense_id_start(struct ccw_device *);
- void ccw_device_sense_id_irq(struct ccw_device *, enum dev_event);
- void ccw_device_sense_id_done(struct ccw_device *, int);
- /* Function prototypes for path grouping stuff. */
- void ccw_device_sense_pgid_start(struct ccw_device *);
- void ccw_device_sense_pgid_irq(struct ccw_device *, enum dev_event);
- void ccw_device_sense_pgid_done(struct ccw_device *, int);
- void ccw_device_verify_start(struct ccw_device *);
- void ccw_device_verify_irq(struct ccw_device *, enum dev_event);
- void ccw_device_verify_done(struct ccw_device *, int);
- void ccw_device_disband_start(struct ccw_device *);
- void ccw_device_disband_irq(struct ccw_device *, enum dev_event);
- void ccw_device_disband_done(struct ccw_device *, int);
- int ccw_device_call_handler(struct ccw_device *);
- int ccw_device_stlck(struct ccw_device *);
- /* qdio needs this. */
- void ccw_device_set_timeout(struct ccw_device *, int);
- extern struct subchannel_id ccw_device_get_subchannel_id(struct ccw_device *);
- void retry_set_schib(struct ccw_device *cdev);
- #endif
|
