[SCSI] be2iscsi: Fix lack of uninitialize pattern to FW

This patch sends uninitialize pattern to FW during driver unload
which is expected by FW for cleanup

Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

3 files changed, 53 insertions, 0 deletions

diff --git a/drivers/scsi/be2iscsi/be_cmds.c b/drivers/scsi/be2iscsi/be_cmds.c
index 5c87768c109c..0b44cc9bd966 100644
--- a/drivers/scsi/be2iscsi/be_cmds.c
+++ b/drivers/scsi/be2iscsi/be_cmds.c
@@ -732,6 +732,16 @@ int beiscsi_cmd_eq_create(struct be_ctrl_info *ctrl,
         return status;
 }
 
+/**
+ * be_cmd_fw_initialize()- Initialize FW
+ * @ctrl: Pointer to function control structure
+ *
+ * Send FW initialize pattern for the function.
+ *
+ * return
+ * Success: 0
+ * Failure: Non-Zero value
+ **/
 int be_cmd_fw_initialize(struct be_ctrl_info *ctrl)
 {
         struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
@@ -762,6 +772,47 @@ int be_cmd_fw_initialize(struct be_ctrl_info *ctrl)
         return status;
 }
 
+/**
+ * be_cmd_fw_uninit()- Uinitialize FW
+ * @ctrl: Pointer to function control structure
+ *
+ * Send FW uninitialize pattern for the function
+ *
+ * return
+ * Success: 0
+ * Failure: Non-Zero value
+ **/
+int be_cmd_fw_uninit(struct be_ctrl_info *ctrl)
+{
+        struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
+        struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
+        int status;
+        u8 *endian_check;
+
+        spin_lock(&ctrl->mbox_lock);
+        memset(wrb, 0, sizeof(*wrb));
+
+        endian_check = (u8 *) wrb;
+        *endian_check++ = 0xFF;
+        *endian_check++ = 0xAA;
+        *endian_check++ = 0xBB;
+        *endian_check++ = 0xFF;
+        *endian_check++ = 0xFF;
+        *endian_check++ = 0xCC;
+        *endian_check++ = 0xDD;
+        *endian_check = 0xFF;
+
+        be_dws_cpu_to_le(wrb, sizeof(*wrb));
+
+        status = be_mbox_notify(ctrl);
+        if (status)
+                beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
+                            "BC_%d : be_cmd_fw_uninit Failed\n");
+
+        spin_unlock(&ctrl->mbox_lock);
+        return status;
+}
+
 int beiscsi_cmd_cq_create(struct be_ctrl_info *ctrl,
                           struct be_queue_info *cq, struct be_queue_info *eq,
                           bool sol_evts, bool no_delay, int coalesce_wm)
diff --git a/drivers/scsi/be2iscsi/be_cmds.h b/drivers/scsi/be2iscsi/be_cmds.h
index 23397d51ac54..0f8c920b88c4 100644
--- a/drivers/scsi/be2iscsi/be_cmds.h
+++ b/drivers/scsi/be2iscsi/be_cmds.h
@@ -697,6 +697,7 @@ int beiscsi_mccq_compl(struct beiscsi_hba *phba,
                         uint32_t tag, struct be_mcc_wrb **wrb, void *cmd_va);
 /*ISCSI Functuions */
 int be_cmd_fw_initialize(struct be_ctrl_info *ctrl);
+int be_cmd_fw_uninit(struct be_ctrl_info *ctrl);
 
 struct be_mcc_wrb *wrb_from_mbox(struct be_dma_mem *mbox_mem);
 struct be_mcc_wrb *wrb_from_mccq(struct beiscsi_hba *phba);
diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c
index 4e2733d23003..3fb997fc6015 100644
--- a/drivers/scsi/be2iscsi/be_main.c
+++ b/drivers/scsi/be2iscsi/be_main.c
@@ -3430,6 +3430,7 @@ static void hwi_cleanup(struct beiscsi_hba *phba)
                         beiscsi_cmd_q_destroy(ctrl, q, QTYPE_EQ);
         }
         be_mcc_queues_destroy(phba);
+        be_cmd_fw_uninit(ctrl);
 }
 
 static int be_mcc_queues_create(struct beiscsi_hba *phba,