1 files changed, 18 insertions, 6 deletions

diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h
index d5734e976e1c..712ff1650134 100644
--- a/drivers/s390/block/dasd_eckd.h
+++ b/drivers/s390/block/dasd_eckd.h
@@ -1,7 +1,7 @@
-/* 
+/*
  * File...........: linux/drivers/s390/block/dasd_eckd.h
  * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
- *                  Horst Hummel <Horst.Hummel@de.ibm.com> 
+ *                  Horst Hummel <Horst.Hummel@de.ibm.com>
  * Bugreports.to..: <Linux390@de.ibm.com>
  * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
  *
@@ -41,9 +41,10 @@
 #define DASD_ECKD_CCW_RESERVE            0xB4
 
 /*
- *Perform Subsystem Function / Sub-Orders
+ * Perform Subsystem Function / Sub-Orders
  */
-#define PSF_ORDER_PRSSD                  0x18
+#define PSF_ORDER_PRSSD 0x18
+#define PSF_ORDER_SSC   0x1D
 
 /*****************************************************************************
  * SECTION: Type Definitions
@@ -155,7 +156,7 @@ struct dasd_eckd_characteristics {
                 unsigned char reserved2:4;
                 unsigned char reserved3:8;
                 unsigned char defect_wr:1;
-                unsigned char XRC_supported:1; 
+                unsigned char XRC_supported:1;
                 unsigned char reserved4:1;
                 unsigned char striping:1;
                 unsigned char reserved5:4;
@@ -343,7 +344,7 @@ struct dasd_eckd_path {
 };
 
 /*
- * Perform Subsystem Function - Prepare for Read Subsystem Data  
+ * Perform Subsystem Function - Prepare for Read Subsystem Data
  */
 struct dasd_psf_prssd_data {
         unsigned char order;
@@ -353,4 +354,15 @@ struct dasd_psf_prssd_data {
         unsigned char varies[9];
 } __attribute__ ((packed));
 
+/*
+ * Perform Subsystem Function - Set Subsystem Characteristics
+ */
+struct dasd_psf_ssc_data {
+        unsigned char order;
+        unsigned char flags;
+        unsigned char cu_type[4];
+        unsigned char suborder;
+        unsigned char reserved[59];
+} __attribute__((packed));
+
 #endif                          /* DASD_ECKD_H */