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Diffstat (limited to 'drivers/s390/block/dasd_eckd.h')
-rw-r--r--drivers/s390/block/dasd_eckd.h16
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h
index 9d91c86325696e..712ff1650134c5 100644
--- a/drivers/s390/block/dasd_eckd.h
+++ b/drivers/s390/block/dasd_eckd.h
@@ -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
@@ -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 */