[PATCH 1/2] s390x: gs: move to new header file

[Nico Boehr <nrb@linux.ibm.com>]

Move the guarded-storage related structs and instructions to a new
header file because we will also need them for the SIGP store additional
status tests.

Signed-off-by: Nico Boehr <nrb@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
---
 lib/s390x/gs.h | 69 ++++++++++++++++++++++++++++++++++++++++++++++++++
 s390x/gs.c     | 54 +--------------------------------------
 2 files changed, 70 insertions(+), 53 deletions(-)
 create mode 100644 lib/s390x/gs.h

diff --git a/lib/s390x/gs.h b/lib/s390x/gs.h
new file mode 100644
index 000000000000..9c94e580b4b9
--- /dev/null
+++ b/lib/s390x/gs.h
@@ -0,0 +1,69 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Guarded storage related definitions
+ *
+ * Copyright 2018 IBM Corp.
+ *
+ * Authors:
+ *    Martin Schwidefsky <schwidefsky@de.ibm.com>
+ *    Janosch Frank <frankja@linux.ibm.com>
+ */
+#include <stdint.h>
+
+#ifndef _S390X_GS_H_
+#define _S390X_GS_H_
+
+struct gs_cb {
+	uint64_t reserved;
+	uint64_t gsd;
+	uint64_t gssm;
+	uint64_t gs_epl_a;
+};
+
+struct gs_epl {
+	uint8_t pad1;
+	union {
+		uint8_t gs_eam;
+		struct {
+			uint8_t		: 6;
+			uint8_t e	: 1;
+			uint8_t b	: 1;
+		};
+	};
+	union {
+		uint8_t gs_eci;
+		struct {
+			uint8_t tx	: 1;
+			uint8_t cx	: 1;
+			uint8_t		: 5;
+			uint8_t in	: 1;
+		};
+	};
+	union {
+		uint8_t gs_eai;
+		struct {
+			uint8_t		: 1;
+			uint8_t t	: 1;
+			uint8_t as	: 2;
+			uint8_t ar	: 4;
+		};
+	};
+	uint32_t pad2;
+	uint64_t gs_eha;
+	uint64_t gs_eia;
+	uint64_t gs_eoa;
+	uint64_t gs_eir;
+	uint64_t gs_era;
+};
+
+static inline void load_gs_cb(struct gs_cb *gs_cb)
+{
+	asm volatile(".insn rxy,0xe3000000004d,0,%0" : : "Q" (*gs_cb));
+}
+
+static inline void store_gs_cb(struct gs_cb *gs_cb)
+{
+	asm volatile(".insn rxy,0xe30000000049,0,%0" : : "Q" (*gs_cb));
+}
+
+#endif
diff --git a/s390x/gs.c b/s390x/gs.c
index 7567bb78fecb..4993eb8f43a9 100644
--- a/s390x/gs.c
+++ b/s390x/gs.c
@@ -13,49 +13,7 @@
 #include <asm/facility.h>
 #include <asm/interrupt.h>
 #include <asm-generic/barrier.h>
-
-struct gs_cb {
-	uint64_t reserved;
-	uint64_t gsd;
-	uint64_t gssm;
-	uint64_t gs_epl_a;
-};
-
-struct gs_epl {
-	uint8_t pad1;
-	union {
-		uint8_t gs_eam;
-		struct {
-			uint8_t		: 6;
-			uint8_t e	: 1;
-			uint8_t b	: 1;
-		};
-	};
-	union {
-		uint8_t gs_eci;
-		struct {
-			uint8_t tx	: 1;
-			uint8_t cx	: 1;
-			uint8_t		: 5;
-			uint8_t in	: 1;
-		};
-	};
-	union {
-		uint8_t gs_eai;
-		struct {
-			uint8_t		: 1;
-			uint8_t t	: 1;
-			uint8_t as	: 2;
-			uint8_t ar	: 4;
-		};
-	};
-	uint32_t pad2;
-	uint64_t gs_eha;
-	uint64_t gs_eia;
-	uint64_t gs_eoa;
-	uint64_t gs_eir;
-	uint64_t gs_era;
-};
+#include <gs.h>
 
 static volatile int guarded = 0;
 static struct gs_cb gs_cb;
@@ -64,16 +22,6 @@ static unsigned long gs_area = 0x2000000;
 
 void gs_handler(struct gs_cb *this_cb);
 
-static inline void load_gs_cb(struct gs_cb *gs_cb)
-{
-	asm volatile(".insn rxy,0xe3000000004d,0,%0" : : "Q" (*gs_cb));
-}
-
-static inline void store_gs_cb(struct gs_cb *gs_cb)
-{
-	asm volatile(".insn rxy,0xe30000000049,0,%0" : : "Q" (*gs_cb));
-}
-
 static inline unsigned long load_guarded(unsigned long *p)
 {
 	unsigned long v;
-- 
2.31.1