[PATCH 03/11] smartpqi: add module param to hide vsep

[Don Brace]

From: Dave Carroll <david.carr...@microsemi.com>

Reviewed-by: Scott Benesh <scott.ben...@microsemi.com>
Reviewed-by: Kevin Barnett <kevin.barn...@microsemi.com>
Signed-off-by: Dave Carroll <david.carr...@microsemi.com>
Signed-off-by: Don Brace <don.br...@microsemi.com>
---
 drivers/scsi/smartpqi/smartpqi.h      |    1 +
 drivers/scsi/smartpqi/smartpqi_init.c |   26 ++++++++++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/drivers/scsi/smartpqi/smartpqi.h b/drivers/scsi/smartpqi/smartpqi.h
index e8e768849c70..0a629f2f447a 100644
--- a/drivers/scsi/smartpqi/smartpqi.h
+++ b/drivers/scsi/smartpqi/smartpqi.h
@@ -822,6 +822,7 @@ union pqi_reset_register {
 #define PQI_HBA_BUS                    2
 #define PQI_EXTERNAL_RAID_VOLUME_BUS   3
 #define PQI_MAX_BUS                    PQI_EXTERNAL_RAID_VOLUME_BUS
+#define PQI_VSEP_CISS_BTL              379
 
 struct report_lun_header {
        __be32  list_length;
diff --git a/drivers/scsi/smartpqi/smartpqi_init.c 
b/drivers/scsi/smartpqi/smartpqi_init.c
index fa6403b2741c..f289fbd4220d 100644
--- a/drivers/scsi/smartpqi/smartpqi_init.c
+++ b/drivers/scsi/smartpqi/smartpqi_init.c
@@ -151,6 +151,12 @@ module_param_named(expose_ld_first,
 MODULE_PARM_DESC(expose_ld_first,
        "Expose logical drives before physical drives.");
 
+static int pqi_hide_vsep;
+module_param_named(hide_vsep,
+       pqi_hide_vsep, int, 0644);
+MODULE_PARM_DESC(hide_vsep,
+       "Hide the virtual SEP for direct attached drives.");
+
 static char *raid_levels[] = {
        "RAID-0",
        "RAID-4",
@@ -1951,6 +1957,11 @@ static inline bool pqi_skip_device(u8 *scsi3addr)
        return false;
 }
 
+static inline void pqi_mask_device(u8 *scsi3addr)
+{
+       scsi3addr[3] |= 0xc0;
+}
+
 static inline bool pqi_is_device_with_sas_address(struct pqi_scsi_dev *device)
 {
        if (!device->is_physical_device)
@@ -2031,6 +2042,21 @@ static int pqi_update_scsi_devices(struct pqi_ctrl_info 
*ctrl_info)
                        rc = -ENOMEM;
                        goto out;
                }
+               if (pqi_hide_vsep) {
+                       int i;
+
+                       for (i = num_physicals - 1; i >= 0; i--) {
+                               phys_lun_ext_entry =
+                                               &physdev_list->lun_entries[i];
+                               if (CISS_GET_DRIVE_NUMBER(
+                                       phys_lun_ext_entry->lunid) ==
+                                               PQI_VSEP_CISS_BTL) {
+                                       pqi_mask_device(
+                                               phys_lun_ext_entry->lunid);
+                                       break;
+                               }
+                       }
+               }
        }
 
        num_new_devices = num_physicals + num_logicals;