[SCSI] qla2xxx: add support for NPIV

Following patch adds support for NPIV (N-Port ID Virtualization) to the
qla2xxx.

- supported within switched-fabric topologies only.
- supports up to 63 virtual ports on each physical port.

Signed-off-by: Seokmann Ju <seokmann.ju@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 37 insertions, 2 deletions

diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 6ce532cdc4c1..0ba4c8d37879 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -9,7 +9,6 @@
 #include <scsi/scsi_tcq.h>
 
 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
-static void qla2x00_async_event(scsi_qla_host_t *, uint16_t *);
 static void qla2x00_process_completed_request(struct scsi_qla_host *, uint32_t);
 static void qla2x00_status_entry(scsi_qla_host_t *, void *);
 static void qla2x00_status_cont_entry(scsi_qla_host_t *, sts_cont_entry_t *);
@@ -244,7 +243,7 @@ qla2x00_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
  * @ha: SCSI driver HA context
  * @mb: Mailbox registers (0 - 3)
  */
-static void
+void
 qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
 {
 #define LS_UNKNOWN      2
@@ -386,6 +385,11 @@ qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
                         qla2x00_mark_all_devices_lost(ha, 1);
                 }
 
+                if (ha->parent) {
+                        atomic_set(&ha->vp_state, VP_FAILED);
+                        fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
+                }
+
                 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
 
                 ha->flags.management_server_logged_in = 0;
@@ -422,6 +426,11 @@ qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
                         qla2x00_mark_all_devices_lost(ha, 1);
                 }
 
+                if (ha->parent) {
+                        atomic_set(&ha->vp_state, VP_FAILED);
+                        fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
+                }
+
                 ha->flags.management_server_logged_in = 0;
                 ha->link_data_rate = PORT_SPEED_UNKNOWN;
                 if (ql2xfdmienable)
@@ -440,6 +449,11 @@ qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
                         qla2x00_mark_all_devices_lost(ha, 1);
                 }
 
+                if (ha->parent) {
+                        atomic_set(&ha->vp_state, VP_FAILED);
+                        fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
+                }
+
                 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
 
                 ha->operating_mode = LOOP;
@@ -465,6 +479,11 @@ qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
                         qla2x00_mark_all_devices_lost(ha, 1);
                 }
 
+                if (ha->parent) {
+                        atomic_set(&ha->vp_state, VP_FAILED);
+                        fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
+                }
+
                 if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
                         set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
                 }
@@ -491,6 +510,11 @@ qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
                         qla2x00_mark_all_devices_lost(ha, 1);
                 }
 
+                if (ha->parent) {
+                        atomic_set(&ha->vp_state, VP_FAILED);
+                        fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
+                }
+
                 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
                 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
                 break;
@@ -530,6 +554,10 @@ qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
                 break;
 
         case MBA_RSCN_UPDATE:           /* State Change Registration */
+                /* Check if the Vport has issued a SCR */
+                if (ha->parent && test_bit(VP_SCR_NEEDED, &ha->vp_flags))
+                        break;
+
                 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
                     ha->host_no));
                 DEBUG(printk(KERN_INFO
@@ -589,6 +617,9 @@ qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
                 ha->host_no, mb[1], mb[2]));
                 break;
         }
+
+        if (!ha->parent && ha->num_vhosts)
+                qla2x00_alert_all_vps(ha, mb);
 }
 
 static void
@@ -1393,6 +1424,10 @@ qla24xx_process_response_queue(struct scsi_qla_host *ha)
                 case MS_IOCB_TYPE:
                         qla24xx_ms_entry(ha, (struct ct_entry_24xx *)pkt);
                         break;
+                case VP_RPT_ID_IOCB_TYPE:
+                        qla24xx_report_id_acquisition(ha,
+                            (struct vp_rpt_id_entry_24xx *)pkt);
+                        break;
                 default:
                         /* Type Not Supported. */
                         DEBUG4(printk(KERN_WARNING