1 files changed, 68 insertions, 0 deletions
diff --git a/arch/s390/include/asm/appldata.h b/arch/s390/include/asm/appldata.h
new file mode 100644
index 000000000..f2240392c
--- /dev/null
+++ b/arch/s390/include/asm/appldata.h
@@ -0,0 +1,68 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright IBM Corp. 2006
+ *
+ * Author(s): Melissa Howland <melissah@us.ibm.com>
+ */
+
+#ifndef _ASM_S390_APPLDATA_H
+#define _ASM_S390_APPLDATA_H
+
+#include <linux/io.h>
+#include <asm/diag.h>
+
+#define APPLDATA_START_INTERVAL_REC	0x80
+#define APPLDATA_STOP_REC		0x81
+#define APPLDATA_GEN_EVENT_REC		0x82
+#define APPLDATA_START_CONFIG_REC	0x83
+
+/*
+ * Parameter list for DIAGNOSE X'DC'
+ */
+struct appldata_parameter_list {
+	u16 diag;
+	u8  function;
+	u8  parlist_length;
+	u32 unused01;
+	u16 reserved;
+	u16 buffer_length;
+	u32 unused02;
+	u64 product_id_addr;
+	u64 buffer_addr;
+} __attribute__ ((packed));
+
+struct appldata_product_id {
+	char prod_nr[7];	/* product number */
+	u16  prod_fn;		/* product function */
+	u8   record_nr; 	/* record number */
+	u16  version_nr;	/* version */
+	u16  release_nr;	/* release */
+	u16  mod_lvl;		/* modification level */
+} __attribute__ ((packed));
+
+
+static inline int appldata_asm(struct appldata_parameter_list *parm_list,
+			       struct appldata_product_id *id,
+			       unsigned short fn, void *buffer,
+			       unsigned short length)
+{
+	int ry;
+
+	if (!MACHINE_IS_VM)
+		return -EOPNOTSUPP;
+	parm_list->diag = 0xdc;
+	parm_list->function = fn;
+	parm_list->parlist_length = sizeof(*parm_list);
+	parm_list->buffer_length = length;
+	parm_list->product_id_addr = (unsigned long) id;
+	parm_list->buffer_addr = virt_to_phys(buffer);
+	diag_stat_inc(DIAG_STAT_X0DC);
+	asm volatile(
+		"	diag	%1,%0,0xdc"
+		: "=d" (ry)
+		: "d" (parm_list), "m" (*parm_list), "m" (*id)
+		: "cc");
+	return ry;
+}
+
+#endif /* _ASM_S390_APPLDATA_H */