1 files changed, 43 insertions, 0 deletions

diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h
index 3f15b2aaeaea..662dab4b93e6 100644
--- a/drivers/s390/cio/chsc.h
+++ b/drivers/s390/cio/chsc.h
@@ -3,6 +3,7 @@
 
 #include <linux/types.h>
 #include <linux/device.h>
+#include <asm/css_chars.h>
 #include <asm/chpid.h>
 #include <asm/chsc.h>
 #include <asm/schid.h>
@@ -118,4 +119,46 @@ int chsc_error_from_response(int response);
 
 int chsc_siosl(struct subchannel_id schid);
 
+/* Functions and definitions to query storage-class memory. */
+struct sale {
+        u64 sa;
+        u32 p:4;
+        u32 op_state:4;
+        u32 data_state:4;
+        u32 rank:4;
+        u32 r:1;
+        u32:7;
+        u32 rid:8;
+        u32:32;
+} __packed;
+
+struct chsc_scm_info {
+        struct chsc_header request;
+        u32:32;
+        u64 reqtok;
+        u32 reserved1[4];
+        struct chsc_header response;
+        u64:56;
+        u8 rq;
+        u32 mbc;
+        u64 msa;
+        u16 is;
+        u16 mmc;
+        u32 mci;
+        u64 nr_scm_ini;
+        u64 nr_scm_unini;
+        u32 reserved2[10];
+        u64 restok;
+        struct sale scmal[248];
+} __packed;
+
+int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token);
+
+#ifdef CONFIG_SCM_BUS
+int scm_update_information(void);
+#else /* CONFIG_SCM_BUS */
+#define scm_update_information() 0
+#endif /* CONFIG_SCM_BUS */
+
+
 #endif