diff --git a/headers/private/graphics/nvidia/DriverInterface.h b/headers/private/graphics/nvidia/DriverInterface.h
index 6f9ec635ce..2aa4cf91dc 100644
--- a/headers/private/graphics/nvidia/DriverInterface.h
+++ b/headers/private/graphics/nvidia/DriverInterface.h
@@ -73,24 +73,24 @@ enum {
 };
 
 /* handles to pre-defined engine commands */
-#define NV_ROP5_SOLID					0x80000000 /* 2D */
-#define NV_IMAGE_BLACK_RECTANGLE		0x80000001 /* 2D/3D */
-#define NV_IMAGE_PATTERN				0x80000002 /* 2D */
-#define NV3_SURFACE_0					0x80000003 /* 3D: old cmd */
-#define NV3_SURFACE_1					0x80000004 /* 3D: old cmd */
-#define NV3_SURFACE_2					0x80000005 /* 3D: old cmd */
-#define NV3_SURFACE_3					0x80000006 /* 3D: old cmd */
-#define NV4_CONTEXT_SURFACES_ARGB_ZS	0x80000007 /* 3D: should replace the old cmd's */
-#define NV10_CONTEXT_SURFACES_ARGB_ZS	0x80000007 /* 3D: should replace the old cmd's */
-#define NV1_IMAGE_FROM_CPU				0x80000010 /* 2D: unused, remove? */
-#define NV_IMAGE_BLIT					0x80000011 /* 2D */
-#define NV3_GDI_RECTANGLE_TEXT			0x80000012 /* 2D */
-#define NV_RENDER_D3D0_TRIANGLE_ZETA	0x80000013 /* unused (yet?) */
-#define NV4_DX5_TEXTURE_TRIANGLE		0x80000014 /* 3D */
-#define NV10_DX5_TEXTURE_TRIANGLE		0x80000014 /* 3D */
-#define NV4_DX6_MULTI_TEXTURE_TRIANGLE	0x80000015 /* unused (yet?) */
-#define NV10_DX6_MULTI_TEXTURE_TRIANGLE	0x80000015 /* unused (yet?) */
-#define NV1_RENDER_SOLID_LIN			0x80000016 /* 2D: unused */
+#define NV_ROP5_SOLID					0x00000000 /* 2D */
+#define NV_IMAGE_BLACK_RECTANGLE		0x00000001 /* 2D/3D */
+#define NV_IMAGE_PATTERN				0x00000002 /* 2D */
+#define NV3_SURFACE_0					0x00000003 /* 3D: old cmd */
+#define NV3_SURFACE_1					0x00000004 /* 3D: old cmd */
+#define NV3_SURFACE_2					0x00000005 /* 3D: old cmd */
+#define NV3_SURFACE_3					0x00000006 /* 3D: old cmd */
+#define NV4_CONTEXT_SURFACES_ARGB_ZS	0x00000007 /* 3D: should replace the old cmd's */
+#define NV10_CONTEXT_SURFACES_ARGB_ZS	0x00000007 /* 3D: should replace the old cmd's */
+#define NV1_IMAGE_FROM_CPU				0x00000010 /* 2D: unused, remove? */
+#define NV_IMAGE_BLIT					0x00000011 /* 2D */
+#define NV3_GDI_RECTANGLE_TEXT			0x00000012 /* 2D */
+#define NV_RENDER_D3D0_TRIANGLE_ZETA	0x00000013 /* unused (yet?) */
+#define NV4_DX5_TEXTURE_TRIANGLE		0x00000014 /* 3D */
+#define NV10_DX5_TEXTURE_TRIANGLE		0x00000014 /* 3D */
+#define NV4_DX6_MULTI_TEXTURE_TRIANGLE	0x00000015 /* unused (yet?) */
+#define NV10_DX6_MULTI_TEXTURE_TRIANGLE	0x00000015 /* unused (yet?) */
+#define NV1_RENDER_SOLID_LIN			0x00000016 /* 2D: unused */
 
 /* max. number of overlay buffers */
 #define MAXBUFFERS 3
@@ -194,6 +194,7 @@ typedef struct {
 			uint32 *cmdbuffer;	/* location of DMA command buffer */
 			uint32 put;			/* */
 			uint32 current;		/* */
+			uint32 free;		/* */
 		}dma;
 	} engine;
 
diff --git a/headers/private/graphics/nvidia/nv_acc.h b/headers/private/graphics/nvidia/nv_acc.h
index 82654acac6..f96787dc36 100644
--- a/headers/private/graphics/nvidia/nv_acc.h
+++ b/headers/private/graphics/nvidia/nv_acc.h
@@ -265,4 +265,14 @@ typedef struct {
 typedef struct {
 } cmd_nv4_dx6_multi_texture_triangle;/* nv10_dx6_multi_texture_triangle is identical? */
 
+
+/************ DMA command defines ***********/
+
+#define NV_GENERAL_DMAPUT			0x0040
+#define NV_GENERAL_DMAGET			0x0044
+#define NV_ROP5_SOLID_SETROP5		0x0300
+#define NV_IMAGE_PATTERN_SETSHAPE	0x0308
+#define NV_IMAGE_PATTERN_SETCOLOR0	0x030c
+#define NV_IMAGE_BLIT_SOURCEORG		0x0308
+
 #endif