[SCSI] qla2xxx: Add FC-transport Asynchronous Event Notification support.

Supported events include LIP, LIP reset, RSCN, link up, and link
down.

To support AEN (and additional forthcoming features), we also
introduce a simple deferred-work construct to manage events which
require a non-atomic sleeping-capable context.  This work-list is
processed as part of the driver's standard DPC routine.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 4e9f41034466..e9d8a79dd6a4 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -408,6 +408,7 @@ qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
                 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
 
                 ha->flags.management_server_logged_in = 0;
+                qla2x00_post_aen_work(ha, FCH_EVT_LIP, mb[1]);
                 break;
 
         case MBA_LOOP_UP:               /* Loop Up Event */
@@ -427,6 +428,7 @@ qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
                     link_speed);
 
                 ha->flags.management_server_logged_in = 0;
+                qla2x00_post_aen_work(ha, FCH_EVT_LINKUP, ha->link_data_rate);
                 break;
 
         case MBA_LOOP_DOWN:             /* Loop Down Event */
@@ -450,6 +452,7 @@ qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
                 ha->link_data_rate = PORT_SPEED_UNKNOWN;
                 if (ql2xfdmienable)
                         set_bit(REGISTER_FDMI_NEEDED, &ha->dpc_flags);
+                qla2x00_post_aen_work(ha, FCH_EVT_LINKDOWN, 0);
                 break;
 
         case MBA_LIP_RESET:             /* LIP reset occurred */
@@ -473,6 +476,7 @@ qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
 
                 ha->operating_mode = LOOP;
                 ha->flags.management_server_logged_in = 0;
+                qla2x00_post_aen_work(ha, FCH_EVT_LIPRESET, mb[1]);
                 break;
 
         case MBA_POINT_TO_POINT:        /* Point-to-Point */
@@ -610,6 +614,7 @@ qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
 
                 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
                 set_bit(RSCN_UPDATE, &ha->dpc_flags);
+                qla2x00_post_aen_work(ha, FCH_EVT_RSCN, rscn_entry);
                 break;
 
         /* case MBA_RIO_RESPONSE: */