[SCSI] lpfc 8.3.19: Added support for ELS RRQ command

[firefly-linux-kernel-4.4.55.git] / drivers / scsi / lpfc / lpfc_init.c

diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 432afc7db1cccf28087b18487daee5e25726e1f0..70ba1895b0a1c442198a926ef0dda47dbc4d462f 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -929,6 +929,35 @@ lpfc_hb_timeout(unsigned long ptr)
        return;
 }
 
+/**
+ * lpfc_rrq_timeout - The RRQ-timer timeout handler
+ * @ptr: unsigned long holds the pointer to lpfc hba data structure.
+ *
+ * This is the RRQ-timer timeout handler registered to the lpfc driver. When
+ * this timer fires, a RRQ timeout event shall be posted to the lpfc driver
+ * work-port-events bitmap and the worker thread is notified. This timeout
+ * event will be used by the worker thread to invoke the actual timeout
+ * handler routine, lpfc_rrq_handler. Any periodical operations will
+ * be performed in the timeout handler and the RRQ timeout event bit shall
+ * be cleared by the worker thread after it has taken the event bitmap out.
+ **/
+static void
+lpfc_rrq_timeout(unsigned long ptr)
+{
+       struct lpfc_hba *phba;
+       uint32_t tmo_posted;
+       unsigned long iflag;
+
+       phba = (struct lpfc_hba *)ptr;
+       spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
+       tmo_posted = phba->hba_flag & HBA_RRQ_ACTIVE;
+       if (!tmo_posted)
+               phba->hba_flag |= HBA_RRQ_ACTIVE;
+       spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
+       if (!tmo_posted)
+               lpfc_worker_wake_up(phba);
+}
+
 /**
  * lpfc_hb_mbox_cmpl - The lpfc heart-beat mailbox command callback function
  * @phba: pointer to lpfc hba data structure.
@@ -3990,6 +4019,9 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
        init_timer(&phba->hb_tmofunc);
        phba->hb_tmofunc.function = lpfc_hb_timeout;
        phba->hb_tmofunc.data = (unsigned long)phba;
+       init_timer(&phba->rrq_tmr);
+       phba->rrq_tmr.function = lpfc_rrq_timeout;
+       phba->rrq_tmr.data = (unsigned long)phba;
 
        psli = &phba->sli;
        /* MBOX heartbeat timer */
@@ -8192,6 +8224,8 @@ lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid)
                goto out_unset_driver_resource_s4;
        }
 
+       INIT_LIST_HEAD(&phba->active_rrq_list);
+
        /* Set up common device driver resources */
        error = lpfc_setup_driver_resource_phase2(phba);
        if (error) {