?? device.h
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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 voiddev_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 intdev_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);void retry_set_schib(struct ccw_device *cdev);#endif
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