1 files changed, 44 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 000000000..d32a326a9
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/ltc.h
@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: MIT */
+#ifndef __NVKM_LTC_H__
+#define __NVKM_LTC_H__
+#include <core/subdev.h>
+#include <core/mm.h>
+
+#define NVKM_LTC_MAX_ZBC_CNT 16
+
+struct nvkm_ltc {
+	const struct nvkm_ltc_func *func;
+	struct nvkm_subdev subdev;
+
+	u32 ltc_nr;
+	u32 lts_nr;
+
+	struct mutex mutex; /* serialises CBC operations */
+	u32 num_tags;
+	u32 tag_base;
+	struct nvkm_memory *tag_ram;
+
+	int zbc_min;
+	int zbc_max;
+	u32 zbc_color[NVKM_LTC_MAX_ZBC_CNT][4];
+	u32 zbc_depth[NVKM_LTC_MAX_ZBC_CNT];
+	u32 zbc_stencil[NVKM_LTC_MAX_ZBC_CNT];
+};
+
+void nvkm_ltc_tags_clear(struct nvkm_device *, u32 first, u32 count);
+
+int nvkm_ltc_zbc_color_get(struct nvkm_ltc *, int index, const u32[4]);
+int nvkm_ltc_zbc_depth_get(struct nvkm_ltc *, int index, const u32);
+int nvkm_ltc_zbc_stencil_get(struct nvkm_ltc *, int index, const u32);
+
+void nvkm_ltc_invalidate(struct nvkm_ltc *);
+void nvkm_ltc_flush(struct nvkm_ltc *);
+
+int gf100_ltc_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_ltc **);
+int gk104_ltc_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_ltc **);
+int gm107_ltc_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_ltc **);
+int gm200_ltc_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_ltc **);
+int gp100_ltc_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_ltc **);
+int gp102_ltc_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_ltc **);
+int gp10b_ltc_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_ltc **);
+#endif