1 files changed, 60 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_wopcm.h b/drivers/gpu/drm/i915/gt/intel_wopcm.h
new file mode 100644
index 000000000000..17d6aa86008a
--- /dev/null
+++ b/drivers/gpu/drm/i915/gt/intel_wopcm.h
@@ -0,0 +1,60 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2017-2018 Intel Corporation
+ */
+
+#ifndef _INTEL_WOPCM_H_
+#define _INTEL_WOPCM_H_
+
+#include <linux/types.h>
+
+/**
+ * struct intel_wopcm - Overall WOPCM info and WOPCM regions.
+ * @size: Size of overall WOPCM.
+ * @guc: GuC WOPCM Region info.
+ * @guc.base: GuC WOPCM base which is offset from WOPCM base.
+ * @guc.size: Size of the GuC WOPCM region.
+ */
+struct intel_wopcm {
+	u32 size;
+	struct {
+		u32 base;
+		u32 size;
+	} guc;
+};
+
+/**
+ * intel_wopcm_guc_base()
+ * @wopcm:	intel_wopcm structure
+ *
+ * Returns the base of the WOPCM shadowed region.
+ *
+ * Returns:
+ * 0 if GuC is not present or not in use.
+ * Otherwise, the GuC WOPCM base.
+ */
+static inline u32 intel_wopcm_guc_base(struct intel_wopcm *wopcm)
+{
+	return wopcm->guc.base;
+}
+
+/**
+ * intel_wopcm_guc_size()
+ * @wopcm:	intel_wopcm structure
+ *
+ * Returns size of the WOPCM shadowed region.
+ *
+ * Returns:
+ * 0 if GuC is not present or not in use.
+ * Otherwise, the GuC WOPCM size.
+ */
+static inline u32 intel_wopcm_guc_size(struct intel_wopcm *wopcm)
+{
+	return wopcm->guc.size;
+}
+
+void intel_wopcm_init_early(struct intel_wopcm *wopcm);
+void intel_wopcm_init(struct intel_wopcm *wopcm);
+
+#endif