[SCSI] bfa: Add diagnostic port (D-Port) support
- Introduced support for D-Port which is a new port mode during which
link level diagnostics can be run.
- Provided mechanism to dynamically configure D-Port and initiate diagnostic
tests to isolate any link level issues.
- In D-Port mode, the HBA port does not participate in fabric or login to the
remote device or run data traffic.
- Diagnostic tests include running various loopback tests in conjunction with
the attached device.
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/bfa/bfad_bsg.c b/drivers/scsi/bfa/bfad_bsg.c
index 8ddd7e8..69b1ba9 100644
--- a/drivers/scsi/bfa/bfad_bsg.c
+++ b/drivers/scsi/bfa/bfad_bsg.c
@@ -1747,6 +1747,52 @@
}
int
+bfad_iocmd_diag_cfg_dport(struct bfad_s *bfad, unsigned int cmd, void *pcmd)
+{
+ struct bfa_bsg_gen_s *iocmd = (struct bfa_bsg_gen_s *)pcmd;
+ unsigned long flags;
+ struct bfad_hal_comp fcomp;
+
+ init_completion(&fcomp.comp);
+ spin_lock_irqsave(&bfad->bfad_lock, flags);
+ if (cmd == IOCMD_DIAG_DPORT_ENABLE)
+ iocmd->status = bfa_dport_enable(&bfad->bfa,
+ bfad_hcb_comp, &fcomp);
+ else if (cmd == IOCMD_DIAG_DPORT_DISABLE)
+ iocmd->status = bfa_dport_disable(&bfad->bfa,
+ bfad_hcb_comp, &fcomp);
+ else {
+ bfa_trc(bfad, 0);
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+ return -EINVAL;
+ }
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+
+ if (iocmd->status != BFA_STATUS_OK)
+ bfa_trc(bfad, iocmd->status);
+ else {
+ wait_for_completion(&fcomp.comp);
+ iocmd->status = fcomp.status;
+ }
+
+ return 0;
+}
+
+int
+bfad_iocmd_diag_dport_get_state(struct bfad_s *bfad, void *pcmd)
+{
+ struct bfa_bsg_diag_dport_get_state_s *iocmd =
+ (struct bfa_bsg_diag_dport_get_state_s *)pcmd;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bfad->bfad_lock, flags);
+ iocmd->status = bfa_dport_get_state(&bfad->bfa, &iocmd->state);
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+
+ return 0;
+}
+
+int
bfad_iocmd_phy_get_attr(struct bfad_s *bfad, void *cmd)
{
struct bfa_bsg_phy_attr_s *iocmd =
@@ -2172,6 +2218,9 @@
spin_lock_irqsave(&bfad->bfad_lock, flags);
+ if (bfa_fcport_is_dport(&bfad->bfa))
+ return BFA_STATUS_DPORT_ERR;
+
if ((fcport->cfg.topology == BFA_PORT_TOPOLOGY_LOOP) ||
(fcport->topology == BFA_PORT_TOPOLOGY_LOOP))
iocmd->status = BFA_STATUS_TOPOLOGY_LOOP;
@@ -2702,6 +2751,13 @@
case IOCMD_DIAG_LB_STAT:
rc = bfad_iocmd_diag_lb_stat(bfad, iocmd);
break;
+ case IOCMD_DIAG_DPORT_ENABLE:
+ case IOCMD_DIAG_DPORT_DISABLE:
+ rc = bfad_iocmd_diag_cfg_dport(bfad, cmd, iocmd);
+ break;
+ case IOCMD_DIAG_DPORT_GET_STATE:
+ rc = bfad_iocmd_diag_dport_get_state(bfad, iocmd);
+ break;
case IOCMD_PHY_GET_ATTR:
rc = bfad_iocmd_phy_get_attr(bfad, iocmd);
break;