-#define DRM_IOCTL_SIS_FB_ALLOC DRM_IOWR(0x44, drm_sis_mem_t)
-#define DRM_IOCTL_SIS_FB_FREE DRM_IOW( 0x45, drm_sis_mem_t)
-#define DRM_IOCTL_SIS_AGP_INIT DRM_IOWR(0x53, drm_sis_agp_t)
-#define DRM_IOCTL_SIS_AGP_ALLOC DRM_IOWR(0x54, drm_sis_mem_t)
-#define DRM_IOCTL_SIS_AGP_FREE DRM_IOW( 0x55, drm_sis_mem_t)
-#define DRM_IOCTL_SIS_FB_INIT DRM_IOW( 0x56, drm_sis_fb_t)
+#define NOT_USED_0_3
+#define DRM_SIS_FB_ALLOC 0x04
+#define DRM_SIS_FB_FREE 0x05
+#define NOT_USED_6_12
+#define DRM_SIS_AGP_INIT 0x13
+#define DRM_SIS_AGP_ALLOC 0x14
+#define DRM_SIS_AGP_FREE 0x15
+#define DRM_SIS_FB_INIT 0x16
+
+#define DRM_IOCTL_SIS_FB_ALLOC DRM_IOWR(DRM_COMMAND_BASE + DRM_SIS_FB_ALLOC, drm_sis_mem_t)
+#define DRM_IOCTL_SIS_FB_FREE DRM_IOW( DRM_COMMAND_BASE + DRM_SIS_FB_FREE, drm_sis_mem_t)
+#define DRM_IOCTL_SIS_AGP_INIT DRM_IOWR(DRM_COMMAND_BASE + DRM_SIS_AGP_INIT, drm_sis_agp_t)
+#define DRM_IOCTL_SIS_AGP_ALLOC DRM_IOWR(DRM_COMMAND_BASE + DRM_SIS_AGP_ALLOC, drm_sis_mem_t)
+#define DRM_IOCTL_SIS_AGP_FREE DRM_IOW( DRM_COMMAND_BASE + DRM_SIS_AGP_FREE, drm_sis_mem_t)
+#define DRM_IOCTL_SIS_FB_INIT DRM_IOW( DRM_COMMAND_BASE + DRM_SIS_FB_INIT, drm_sis_fb_t)