extern int ata_bus_probe(struct ata_port *ap);
extern int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel,
unsigned int id, u64 lun);
+int ata_sas_allocate_tag(struct ata_port *ap);
+void ata_sas_free_tag(unsigned int tag, struct ata_port *ap);
/* libata-eh.c */