scsi: lpfc: NVME Target: bind to nvmet_fc api
NVME Target: Tie in to NVME Fabrics nvmet_fc LLDD target api
Adds the routines to:
- register and deregister the FC port as a nvmet-fc targetport
- binding of nvme queues to adapter WQs
- receipt and passing of NVME LS's to transport, sending transport response
- receipt of NVME FCP CMD IUs, processing FCP target io data transmission
commands; transmission of FCP io response
- Abort operations for tgt io exchanges
[mkp: fixed space at end of file warning]
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/drivers/scsi/lpfc/lpfc_mem.c b/drivers/scsi/lpfc/lpfc_mem.c
index 32db255..2437ec5 100644
--- a/drivers/scsi/lpfc/lpfc_mem.c
+++ b/drivers/scsi/lpfc/lpfc_mem.c
@@ -763,3 +763,48 @@ lpfc_in_buf_free(struct lpfc_hba *phba, struct lpfc_dmabuf *mp)
}
return;
}
+
+/**
+ * lpfc_rq_buf_free - Free a RQ DMA buffer
+ * @phba: HBA buffer is associated with
+ * @mp: Buffer to free
+ *
+ * Description: Frees the given DMA buffer in the appropriate way given by
+ * reposting it to its associated RQ so it can be reused.
+ *
+ * Notes: Takes phba->hbalock. Can be called with or without other locks held.
+ *
+ * Returns: None
+ **/
+void
+lpfc_rq_buf_free(struct lpfc_hba *phba, struct lpfc_dmabuf *mp)
+{
+ struct lpfc_rqb *rqbp;
+ struct lpfc_rqe hrqe;
+ struct lpfc_rqe drqe;
+ struct rqb_dmabuf *rqb_entry;
+ unsigned long flags;
+ int rc;
+
+ if (!mp)
+ return;
+
+ rqb_entry = container_of(mp, struct rqb_dmabuf, hbuf);
+ rqbp = rqb_entry->hrq->rqbp;
+
+ spin_lock_irqsave(&phba->hbalock, flags);
+ list_del(&rqb_entry->hbuf.list);
+ hrqe.address_lo = putPaddrLow(rqb_entry->hbuf.phys);
+ hrqe.address_hi = putPaddrHigh(rqb_entry->hbuf.phys);
+ drqe.address_lo = putPaddrLow(rqb_entry->dbuf.phys);
+ drqe.address_hi = putPaddrHigh(rqb_entry->dbuf.phys);
+ rc = lpfc_sli4_rq_put(rqb_entry->hrq, rqb_entry->drq, &hrqe, &drqe);
+ if (rc < 0) {
+ (rqbp->rqb_free_buffer)(phba, rqb_entry);
+ } else {
+ list_add_tail(&rqb_entry->hbuf.list, &rqbp->rqb_buffer_list);
+ rqbp->buffer_count++;
+ }
+
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+}