[S390] sclp: introduce some new interfaces.

Introduce some new interfaces so that random subsystems don't have to
mess around with sclp internal structures.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/s390/char/sclp.h b/drivers/s390/char/sclp.h
index dbb99d1b6f57..cb5888f79007 100644
--- a/drivers/s390/char/sclp.h
+++ b/drivers/s390/char/sclp.h
@@ -72,6 +72,13 @@ typedef unsigned int sclp_cmdw_t;
 
 typedef u32 sccb_mask_t;        /* ATTENTION: assumes 32bit mask !!! */
 
+struct sccb_header {
+        u16     length;
+        u8      function_code;
+        u8      control_mask[3];
+        u16     response_code;
+} __attribute__((packed));
+
 struct gds_subvector {
         u8      length;
         u8      key;