diff --git a/include/drm/intel-gtt.h b/include/drm/intel-gtt.h
index 923afb5..8048c00 100644
--- a/include/drm/intel-gtt.h
+++ b/include/drm/intel-gtt.h
@@ -19,6 +19,8 @@
 	dma_addr_t scratch_page_dma;
 	/* for ppgtt PDE access */
 	u32 __iomem *gtt;
+	/* needed for ioremap in drm/i915 */
+	phys_addr_t gma_bus_addr;
 } *intel_gtt_get(void);
 
 void intel_gtt_chipset_flush(void);