scsi: lpfc: Make PBDE optimizations configurable

The PBDE optimizations aren't supported in all firmware revs.

Make optimizations configurable in case there's a side effect on old
firmware.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/lpfc/lpfc_attr.c

@@ -5387,6 +5387,14 @@ LPFC_BBCR_ATTR_RW(enable_bbcr, 1, 0, 1, "Enable BBC Recovery");
  */
 LPFC_ATTR_RW(enable_dpp, 1, 0, 1, "Enable Direct Packet Push");
 
+/*
+ * lpfc_enable_pbde: Enable PBDE on PRISM - G7
+ *       0  = PBDE on G7 disabled
+ *       1  = PBDE on G7 enabled (default)
+ * Value range is [0,1]. Default value is 1
+ */
+LPFC_ATTR_R(enable_pbde, 1, 0, 1, "Enable PBDE support on PRISM");
+
 struct device_attribute *lpfc_hba_attrs[] = {
 	&dev_attr_nvme_info,
 	&dev_attr_bg_info,
@@ -5498,6 +5506,7 @@ struct device_attribute *lpfc_hba_attrs[] = {
 	&dev_attr_lpfc_enable_mds_diags,
 	&dev_attr_lpfc_enable_bbcr,
 	&dev_attr_lpfc_enable_dpp,
+	&dev_attr_lpfc_enable_pbde,
 	NULL,
 };
 
@@ -6514,6 +6523,7 @@ lpfc_get_cfgparam(struct lpfc_hba *phba)
 	lpfc_nvme_io_channel_init(phba, lpfc_nvme_io_channel);
 	lpfc_enable_bbcr_init(phba, lpfc_enable_bbcr);
 	lpfc_enable_dpp_init(phba, lpfc_enable_dpp);
+	lpfc_enable_pbde_init(phba, lpfc_enable_pbde);
 
 	if (phba->sli_rev != LPFC_SLI_REV4) {
 		/* NVME only supported on SLI4 */