1 files changed, 35 insertions, 0 deletions
diff --git a/roms/skiboot/include/opal-msg.h b/roms/skiboot/include/opal-msg.h
new file mode 100644
index 000000000..2028c79d0
--- /dev/null
+++ b/roms/skiboot/include/opal-msg.h
@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+/* Copyright 2013-2019 IBM Corp. */
+
+#ifndef __OPALMSG_H
+#define __OPALMSG_H
+
+#include <opal.h>
+
+/*
+ * It dictates the number of asynchronous tokens available at the kernel,
+ * ideally the value matches to the number of modules using async
+ * infrastructure, but not necessarily the same..
+ */
+#define OPAL_MAX_ASYNC_COMP	16
+
+/* Max size of struct opal_msg */
+#define OPAL_MSG_SIZE		(64 * 1024)
+
+/* opal_msg fixed parameters size */
+#define OPAL_MSG_HDR_SIZE		(offsetof(struct opal_msg, params))
+#define OPAL_MSG_FIXED_PARAMS_SIZE	\
+				(sizeof(struct opal_msg) - OPAL_MSG_HDR_SIZE)
+
+int _opal_queue_msg(enum opal_msg_type msg_type, void *data,
+		    void (*consumed)(void *data, int status),
+		    size_t params_size, const void *params);
+
+#define opal_queue_msg(msg_type, data, cb, ...) \
+	_opal_queue_msg(msg_type, data, cb, \
+			sizeof((__be64[]) {__VA_ARGS__}), \
+			(__be64[]) {__VA_ARGS__});
+
+void opal_init_msg(void);
+
+#endif /* __OPALMSG_H */