1 files changed, 86 insertions, 0 deletions
diff --git a/lib/intel_bufops.h b/lib/intel_bufops.h
new file mode 100644
index 00000000..f3d6aed8
--- /dev/null
+++ b/lib/intel_bufops.h
@@ -0,0 +1,86 @@
+#ifndef __INTEL_BUFOPS_H__
+#define __INTEL_BUFOPS_H__
+
+#include <stdint.h>
+
+struct buf_ops;
+
+struct intel_buf {
+	uint32_t handle;
+	uint32_t stride;
+	uint32_t tiling;
+	uint32_t bpp;
+	uint32_t size;
+	uint32_t compression;
+	struct {
+		uint32_t offset;
+		uint32_t stride;
+	} aux;
+};
+
+static inline unsigned int intel_buf_width(const struct intel_buf *buf)
+{
+	return buf->stride / (buf->bpp / 8);
+}
+
+static inline unsigned int intel_buf_height(const struct intel_buf *buf)
+{
+	return buf->size / buf->stride;
+}
+
+static inline unsigned int
+intel_buf_aux_width(int gen, const struct intel_buf *buf)
+{
+	/*
+	 * GEN12+: The AUX CCS unit size is 64 bytes mapping 4 main surface
+	 * tiles. Thus the width of the CCS unit is 4*32=128 pixels on the
+	 * main surface.
+	 */
+	if (gen >= 12)
+		return DIV_ROUND_UP(intel_buf_width(buf), 128) * 64;
+
+	return DIV_ROUND_UP(intel_buf_width(buf), 1024) * 128;
+}
+
+static inline unsigned int
+intel_buf_aux_height(int gen, const struct intel_buf *buf)
+{
+	/*
+	 * GEN12+: The AUX CCS unit size is 64 bytes mapping 4 main surface
+	 * tiles. Thus the height of the CCS unit is 32 pixel rows on the main
+	 * surface.
+	 */
+	if (gen >= 12)
+		return DIV_ROUND_UP(intel_buf_height(buf), 32);
+
+	return DIV_ROUND_UP(intel_buf_height(buf), 512) * 32;
+}
+
+struct buf_ops *buf_ops_create(int fd);
+void buf_ops_destroy(struct buf_ops *bops);
+
+bool buf_ops_set_software_tiling(struct buf_ops *bops,
+				 uint32_t tiling,
+				 bool use_software_tiling);
+
+void intel_buf_to_linear(struct buf_ops *bops, struct intel_buf *buf,
+			 uint32_t *linear);
+
+void linear_to_intel_buf(struct buf_ops *bops, struct intel_buf *buf,
+			 uint32_t *linear);
+
+bool buf_ops_has_hw_fence(struct buf_ops *bops, uint32_t tiling);
+bool buf_ops_has_tiling_support(struct buf_ops *bops, uint32_t tiling);
+
+void intel_buf_init(struct buf_ops *bops, struct intel_buf *buf,
+		    int width, int height, int bpp,
+		    uint32_t tiling, uint32_t compression);
+void intel_buf_close(struct buf_ops *bops, struct intel_buf *buf);
+
+void intel_buf_init_using_handle(struct buf_ops *bops,
+				 uint32_t handle,
+				 struct intel_buf *buf,
+				 int width, int height, int bpp,
+				 uint32_t req_tiling, uint32_t compression);
+
+#endif