[SCSI] qla2xxx: Perform implicit logout during rport tear-down.

During rport tear-down, make sure we do an implicit LOGO of the fcport in our
firmware to try to clear any residual commands associated with that fcport.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

5 files changed, 51 insertions, 5 deletions

diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
index 5433f95f3edd..e21db2f78224 100644
--- a/drivers/scsi/qla2xxx/qla_attr.c
+++ b/drivers/scsi/qla2xxx/qla_attr.c
@@ -1647,10 +1647,14 @@ qla2x00_terminate_rport_io(struct fc_rport *rport)
          * final cleanup of firmware resources (PCBs and XCBs).
          */
         if (fcport->loop_id != FC_NO_LOOP_ID &&
-            !test_bit(UNLOADING, &fcport->vha->dpc_flags))
-                fcport->vha->hw->isp_ops->fabric_logout(fcport->vha,
-                        fcport->loop_id, fcport->d_id.b.domain,
-                        fcport->d_id.b.area, fcport->d_id.b.al_pa);
+            !test_bit(UNLOADING, &fcport->vha->dpc_flags)) {
+                if (IS_FWI2_CAPABLE(fcport->vha->hw))
+                        fcport->vha->hw->isp_ops->fabric_logout(fcport->vha,
+                            fcport->loop_id, fcport->d_id.b.domain,
+                            fcport->d_id.b.area, fcport->d_id.b.al_pa);
+                else
+                        qla2x00_port_logout(fcport->vha, fcport);
+        }
 }
 
 static int
diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c
index b85ba1ea0106..4ba30b25f867 100644
--- a/drivers/scsi/qla2xxx/qla_dbg.c
+++ b/drivers/scsi/qla2xxx/qla_dbg.c
@@ -12,7 +12,8 @@
  * |             Level            |   Last Value Used  |     Holes      |
  * ----------------------------------------------------------------------
  * | Module Init and Probe        |       0x0120       | 0x4b,0xba,0xfa |
- * | Mailbox commands             |       0x1139       | 0x112c-0x112e  |
+ * | Mailbox commands             |       0x113e       | 0x112c-0x112e  |
+ * |                              |                    | 0x113a         |
  * | Device Discovery             |       0x2085       | 0x2020-0x2022  |
  * | Queue Command and IO tracing |       0x302f       | 0x3006,0x3008  |
  * |                              |                    | 0x302d-0x302e  |
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 7a224b710ad4..1281f5be6760 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -665,6 +665,7 @@ typedef struct {
 #define MBC_CONFIGURE_VF                0x4b    /* Configure VFs */
 #define MBC_RESET_LINK_STATUS           0x52    /* Reset Link Error Status */
 #define MBC_IOCB_COMMAND_A64            0x54    /* Execute IOCB command (64) */
+#define MBC_PORT_LOGOUT                 0x56    /* Port Logout request */
 #define MBC_SEND_RNID_ELS               0x57    /* Send RNID ELS request */
 #define MBC_SET_RNID_PARAMS             0x59    /* Set RNID parameters */
 #define MBC_GET_RNID_PARAMS             0x5a    /* Data Rate */
diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h
index 87fee23fd167..9f065804bd12 100644
--- a/drivers/scsi/qla2xxx/qla_gbl.h
+++ b/drivers/scsi/qla2xxx/qla_gbl.h
@@ -367,6 +367,9 @@ qla81xx_get_port_config(scsi_qla_host_t *, uint16_t *);
 extern int
 qla81xx_set_port_config(scsi_qla_host_t *, uint16_t *);
 
+extern int
+qla2x00_port_logout(scsi_qla_host_t *, struct fc_port *);
+
 /*
  * Global Function Prototypes in qla_isr.c source file.
  */
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index 50ec272b61db..61e2fb75fbf0 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -4502,5 +4502,42 @@ qla83xx_write_remote_reg(scsi_qla_host_t *vha, uint32_t reg, uint32_t data)
                 ql_dbg(ql_dbg_mbx, vha, 0x1132,
                     "Done %s.\n", __func__);
         }
+
         return rval;
 }
+
+int
+qla2x00_port_logout(scsi_qla_host_t *vha, struct fc_port *fcport)
+{
+        int rval;
+        struct qla_hw_data *ha = vha->hw;
+        mbx_cmd_t mc;
+        mbx_cmd_t *mcp = &mc;
+
+        if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
+                ql_dbg(ql_dbg_mbx, vha, 0x113b,
+                    "Implicit LOGO Unsupported.\n");
+                return QLA_FUNCTION_FAILED;
+        }
+
+
+        ql_dbg(ql_dbg_mbx, vha, 0x113c, "Done %s.\n",  __func__);
+
+        /* Perform Implicit LOGO. */
+        mcp->mb[0] = MBC_PORT_LOGOUT;
+        mcp->mb[1] = fcport->loop_id;
+        mcp->mb[10] = BIT_15;
+        mcp->out_mb = MBX_10|MBX_1|MBX_0;
+        mcp->in_mb = MBX_0;
+        mcp->tov = MBX_TOV_SECONDS;
+        mcp->flags = 0;
+        rval = qla2x00_mailbox_command(vha, mcp);
+        if (rval != QLA_SUCCESS)
+                ql_dbg(ql_dbg_mbx, vha, 0x113d,
+                    "Failed=%x mb[0]=%x.\n", rval, mcp->mb[0]);
+        else
+                ql_dbg(ql_dbg_mbx, vha, 0x113e, "Done %s.\n", __func__);
+
+        return rval;
+}
+