a806170e29
Most noteable part of this commit is the new local header file entry.h which contains all the function declarations of functions that get only called from asm code or are arch internal. That way we can avoid extern declarations in C files. This is more or less the same that was done for sparc64. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
132 lines
3.8 KiB
C
132 lines
3.8 KiB
C
#ifndef S390_DEVICE_H
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#define S390_DEVICE_H
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#include <asm/ccwdev.h>
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#include <asm/atomic.h>
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#include <linux/wait.h>
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#include "io_sch.h"
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/*
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* states of the device statemachine
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*/
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enum dev_state {
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DEV_STATE_NOT_OPER,
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DEV_STATE_SENSE_PGID,
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DEV_STATE_SENSE_ID,
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DEV_STATE_OFFLINE,
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DEV_STATE_VERIFY,
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DEV_STATE_ONLINE,
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DEV_STATE_W4SENSE,
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DEV_STATE_DISBAND_PGID,
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DEV_STATE_BOXED,
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/* states to wait for i/o completion before doing something */
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DEV_STATE_CLEAR_VERIFY,
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DEV_STATE_TIMEOUT_KILL,
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DEV_STATE_QUIESCE,
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/* special states for devices gone not operational */
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DEV_STATE_DISCONNECTED,
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DEV_STATE_DISCONNECTED_SENSE_ID,
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DEV_STATE_CMFCHANGE,
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DEV_STATE_CMFUPDATE,
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/* last element! */
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NR_DEV_STATES
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};
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/*
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* asynchronous events of the device statemachine
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*/
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enum dev_event {
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DEV_EVENT_NOTOPER,
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DEV_EVENT_INTERRUPT,
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DEV_EVENT_TIMEOUT,
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DEV_EVENT_VERIFY,
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/* last element! */
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NR_DEV_EVENTS
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};
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struct ccw_device;
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/*
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* action called through jumptable
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*/
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typedef void (fsm_func_t)(struct ccw_device *, enum dev_event);
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extern fsm_func_t *dev_jumptable[NR_DEV_STATES][NR_DEV_EVENTS];
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static inline void
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dev_fsm_event(struct ccw_device *cdev, enum dev_event dev_event)
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{
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dev_jumptable[cdev->private->state][dev_event](cdev, dev_event);
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}
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/*
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* Delivers 1 if the device state is final.
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*/
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static inline int
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dev_fsm_final_state(struct ccw_device *cdev)
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{
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return (cdev->private->state == DEV_STATE_NOT_OPER ||
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cdev->private->state == DEV_STATE_OFFLINE ||
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cdev->private->state == DEV_STATE_ONLINE ||
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cdev->private->state == DEV_STATE_BOXED);
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}
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extern struct workqueue_struct *ccw_device_work;
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extern struct workqueue_struct *ccw_device_notify_work;
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extern wait_queue_head_t ccw_device_init_wq;
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extern atomic_t ccw_device_init_count;
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void io_subchannel_recog_done(struct ccw_device *cdev);
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int ccw_device_cancel_halt_clear(struct ccw_device *);
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void ccw_device_do_unreg_rereg(struct work_struct *);
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void ccw_device_move_to_orphanage(struct work_struct *);
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int ccw_device_is_orphan(struct ccw_device *);
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int ccw_device_recognition(struct ccw_device *);
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int ccw_device_online(struct ccw_device *);
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int ccw_device_offline(struct ccw_device *);
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void ccw_device_schedule_recovery(void);
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/* Function prototypes for device status and basic sense stuff. */
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void ccw_device_accumulate_irb(struct ccw_device *, struct irb *);
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void ccw_device_accumulate_basic_sense(struct ccw_device *, struct irb *);
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int ccw_device_accumulate_and_sense(struct ccw_device *, struct irb *);
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int ccw_device_do_sense(struct ccw_device *, struct irb *);
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/* Function prototypes for sense id stuff. */
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void ccw_device_sense_id_start(struct ccw_device *);
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void ccw_device_sense_id_irq(struct ccw_device *, enum dev_event);
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void ccw_device_sense_id_done(struct ccw_device *, int);
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/* Function prototypes for path grouping stuff. */
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void ccw_device_sense_pgid_start(struct ccw_device *);
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void ccw_device_sense_pgid_irq(struct ccw_device *, enum dev_event);
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void ccw_device_sense_pgid_done(struct ccw_device *, int);
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void ccw_device_verify_start(struct ccw_device *);
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void ccw_device_verify_irq(struct ccw_device *, enum dev_event);
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void ccw_device_verify_done(struct ccw_device *, int);
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void ccw_device_disband_start(struct ccw_device *);
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void ccw_device_disband_irq(struct ccw_device *, enum dev_event);
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void ccw_device_disband_done(struct ccw_device *, int);
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int ccw_device_call_handler(struct ccw_device *);
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int ccw_device_stlck(struct ccw_device *);
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/* qdio needs this. */
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void ccw_device_set_timeout(struct ccw_device *, int);
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extern struct subchannel_id ccw_device_get_subchannel_id(struct ccw_device *);
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extern struct bus_type ccw_bus_type;
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/* Channel measurement facility related */
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void retry_set_schib(struct ccw_device *cdev);
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void cmf_retry_copy_block(struct ccw_device *);
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int cmf_reenable(struct ccw_device *);
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extern struct device_attribute dev_attr_cmb_enable;
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#endif
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