1 files changed, 33 insertions, 0 deletions
diff --git a/roms/skiboot/include/psr.h b/roms/skiboot/include/psr.h
new file mode 100644
index 000000000..c057a99f9
--- /dev/null
+++ b/roms/skiboot/include/psr.h
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+/* Copyright 2017 IBM Corp. */
+
+#ifndef __PSR_H
+#define __PSR_H
+
+#include <opal.h>
+
+enum psr_class {
+	PSR_CLASS_OCC,
+};
+
+/*
+ * PSR handle is defined as u32. The first and last bytes are
+ * used to indicate the class and type. RID indiactes psr class
+ * specific data. For PSR_CLASS_OCC psr class RID is the chip index.
+ *
+ *	| Class |Reserved|  RID	| Type |
+ *	|-------|--------|------|------|
+ */
+
+#define psr_make_handle(class, rid, type) (((class & 0xF) << 24) | \
+					   ((rid & 0xF) << 8) | (type & 0xF))
+
+#define psr_get_class(handle)	((handle >> 24) & 0xF)
+#define psr_get_rid(handle)	((handle >> 8) & 0xF)
+#define psr_get_type(handle)	(handle & 0xF)
+
+/* Powercap OCC interface */
+int occ_get_psr(u32 handle, u32 *ratio);
+int occ_set_psr(u32 handle, int token, u32 ratio);
+
+#endif /* __PSR_H */