diff --git a/linux-core/i810_drv.h b/linux-core/i810_drv.h
index c64d8cbe..6f06f09e 100644
--- a/linux-core/i810_drv.h
+++ b/linux-core/i810_drv.h
@@ -119,6 +119,7 @@ extern int i810_driver_dma_quiescent(drm_device_t * dev);
 extern void i810_driver_release(drm_device_t * dev, struct file *filp);
 extern void i810_driver_pretakedown(drm_device_t * dev);
 extern void i810_driver_prerelease(drm_device_t * dev, DRMFILE filp);
+extern int i810_driver_device_is_agp(drm_device_t * dev);
 
 #define I810_BASE(reg)		((unsigned long) \
 				dev_priv->mmio_map->handle)
diff --git a/linux-core/i830_drv.h b/linux-core/i830_drv.h
index 47f498e3..bf384e2a 100644
--- a/linux-core/i830_drv.h
+++ b/linux-core/i830_drv.h
@@ -137,6 +137,7 @@ extern void i830_driver_pretakedown(drm_device_t * dev);
 extern void i830_driver_release(drm_device_t * dev, struct file *filp);
 extern int i830_driver_dma_quiescent(drm_device_t * dev);
 extern void i830_driver_prerelease(drm_device_t * dev, DRMFILE filp);
+extern int i830_driver_device_is_agp(drm_device_t * dev);
 
 #define I830_BASE(reg)		((unsigned long) \
 				dev_priv->mmio_map->handle)