From: Sawan Chandak <sawan.chandak@xxxxxxxxxx>
On some vendor switches, when switch port is toggled (down /up),
then in some condition driver tries to configure virtual port,
before FW is actually in ready state to process any commands on wire.
At this time, configuring virtual port can fail. Add fix in driver
to make driver wait, for FW to be ready state before
Signed-off-by: Sawan Chandak <sawan.chandak@xxxxxxxxxx>
Signed-off-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_def.h | 1 +
drivers/scsi/qla2xxx/qla_isr.c | 2 ++
drivers/scsi/qla2xxx/qla_mid.c | 22 ++++++++++++++--------
3 files changed, 17 insertions(+), 8 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 9a8aa11..e86201d 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -3590,6 +3590,7 @@ typedef struct scsi_qla_host {
#define VP_BIND_NEEDED 2
#define VP_DELETE_NEEDED 3
#define VP_SCR_NEEDED 4 /* State Change Request registration */
+#define VP_CONFIG_OK 5 /* Flag to cfg VP, if FW is ready */
atomic_t vp_state;
#define VP_OFFLINE 0
#define VP_ACTIVE 1
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index a04a1b1..72dfbc1 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -763,6 +763,7 @@ skip_rio:
memcpy(vha->port_name, wwpn, WWN_SIZE);
}
+ clear_bit(VP_CONFIG_OK, &vha->vp_flags);
vha->device_flags |= DFLG_NO_CABLE;
qla2x00_mark_all_devices_lost(vha, 1);
}
@@ -947,6 +948,7 @@ skip_rio:
set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
+ set_bit(VP_CONFIG_OK, &vha->vp_flags);
qlt_async_event(mb[0], vha, mb);
break;
diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c
index 5c2e031..8f458ef 100644
--- a/drivers/scsi/qla2xxx/qla_mid.c
+++ b/drivers/scsi/qla2xxx/qla_mid.c
@@ -306,19 +306,25 @@ qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
static int
qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
{
+ struct qla_hw_data *ha = vha->hw;
+ scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
+
ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x4012,
"Entering %s vp_flags: 0x%lx.\n", __func__, vha->vp_flags);
qla2x00_do_work(vha);
- if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
- /* VP acquired. complete port configuration */
- ql_dbg(ql_dbg_dpc, vha, 0x4014,
- "Configure VP scheduled.\n");
- qla24xx_configure_vp(vha);
- ql_dbg(ql_dbg_dpc, vha, 0x4015,
- "Configure VP end.\n");
- return 0;
+ /* Check if Fw is ready to configure VP first */
+ if (test_bit(VP_CONFIG_OK, &base_vha->vp_flags)) {
+ if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
+ /* VP acquired. complete port configuration */
+ ql_dbg(ql_dbg_dpc, vha, 0x4014,
+ "Configure VP scheduled.\n");
+ qla24xx_configure_vp(vha);
+ ql_dbg(ql_dbg_dpc, vha, 0x4015,
+ "Configure VP end.\n");
+ return 0;
+ }
}
if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
--
1.7.7
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