diff options
Diffstat (limited to 'include/scsi/scsi_host.h')
| -rw-r--r-- | include/scsi/scsi_host.h | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index 81d5234f6771..ac1b6125e3ae 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -429,12 +429,15 @@ struct scsi_host_template { }; /* - * shost states + * shost state: If you alter this, you also need to alter scsi_sysfs.c + * (for the ascii descriptions) and the state model enforcer: + * scsi_host_set_state() */ -enum { - SHOST_ADD, - SHOST_DEL, +enum scsi_host_state { + SHOST_CREATED = 1, + SHOST_RUNNING, SHOST_CANCEL, + SHOST_DEL, SHOST_RECOVERY, }; @@ -575,7 +578,7 @@ struct Scsi_Host { unsigned int irq; - unsigned long shost_state; + enum scsi_host_state shost_state; /* ldm bits */ struct device shost_gendev; @@ -633,6 +636,7 @@ extern void scsi_remove_host(struct Scsi_Host *); extern struct Scsi_Host *scsi_host_get(struct Scsi_Host *); extern void scsi_host_put(struct Scsi_Host *t); extern struct Scsi_Host *scsi_host_lookup(unsigned short); +extern const char *scsi_host_state_name(enum scsi_host_state); extern u64 scsi_calculate_bounce_limit(struct Scsi_Host *); @@ -646,6 +650,15 @@ static inline struct device *scsi_get_device(struct Scsi_Host *shost) return shost->shost_gendev.parent; } +/** + * scsi_host_scan_allowed - Is scanning of this host allowed + * @shost: Pointer to Scsi_Host. + **/ +static inline int scsi_host_scan_allowed(struct Scsi_Host *shost) +{ + return shost->shost_state == SHOST_RUNNING; +} + extern void scsi_unblock_requests(struct Scsi_Host *); extern void scsi_block_requests(struct Scsi_Host *); @@ -663,5 +676,6 @@ extern struct scsi_device *scsi_get_host_dev(struct Scsi_Host *); /* legacy interfaces */ extern struct Scsi_Host *scsi_register(struct scsi_host_template *, int); extern void scsi_unregister(struct Scsi_Host *); +extern int scsi_host_set_state(struct Scsi_Host *, enum scsi_host_state); #endif /* _SCSI_SCSI_HOST_H */ |