1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/ltc.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/ltc.h
new file mode 100644
index 000000000000..432717a421d3
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/ltc.h
@@ -0,0 +1,35 @@
+#ifndef __NOUVEAU_LTC_H__
+#define __NOUVEAU_LTC_H__
+
+#include <core/subdev.h>
+#include <core/device.h>
+
+#define NOUVEAU_LTC_MAX_ZBC_CNT 16
+
+struct nouveau_mm_node;
+
+struct nouveau_ltc {
+	struct nouveau_subdev base;
+
+	int  (*tags_alloc)(struct nouveau_ltc *, u32 count,
+	                   struct nouveau_mm_node **);
+	void (*tags_free)(struct nouveau_ltc *, struct nouveau_mm_node **);
+	void (*tags_clear)(struct nouveau_ltc *, u32 first, u32 count);
+
+	int zbc_min;
+	int zbc_max;
+	int (*zbc_color_get)(struct nouveau_ltc *, int index, const u32[4]);
+	int (*zbc_depth_get)(struct nouveau_ltc *, int index, const u32);
+};
+
+static inline struct nouveau_ltc *
+nouveau_ltc(void *obj)
+{
+	return (void *)nouveau_subdev(obj, NVDEV_SUBDEV_LTC);
+}
+
+extern struct nouveau_oclass *gf100_ltc_oclass;
+extern struct nouveau_oclass *gk104_ltc_oclass;
+extern struct nouveau_oclass *gm107_ltc_oclass;
+
+#endif