--- orig/mesa-10.3.2/src/gallium/drivers/radeonsi/si_dma.c	2014-10-25 03:20:20.000000000 +0300
+++ need_dma/mesa-10.3.2/src/gallium/drivers/radeonsi/si_dma.c	2014-11-18 13:15:13.484935674 +0200
@@ -111,7 +111,7 @@ static void si_dma_copy_buffer(struct si
 	}
 }
 
-static void si_dma_copy_tile(struct si_context *ctx,
+static int si_dma_copy_tile(struct si_context *ctx,
 			     struct pipe_resource *dst,
 			     unsigned dst_level,
 			     unsigned dst_x,
@@ -211,6 +211,9 @@ static void si_dma_copy_tile(struct si_c
 	size = (copy_height * pitch) / 4;
 	ncopy = (size / SI_DMA_COPY_MAX_SIZE_DW) + !!(size % SI_DMA_COPY_MAX_SIZE_DW);
 	r600_need_dma_space(&ctx->b, ncopy * 9);
+	if (((ncopy * 9) + cs->cdw) > RADEON_MAX_CMDBUF_DWORDS) {
+		return 0;
+	}
 
 	r600_context_bo_reloc(&ctx->b, &ctx->b.rings.dma, &rsrc->resource,
 			      RADEON_USAGE_READ, RADEON_PRIO_MIN);
@@ -238,6 +241,7 @@ static void si_dma_copy_tile(struct si_c
 		addr += cheight * pitch;
 		y += cheight;
 	}
+	return 1;
 }
 
 void si_dma_copy(struct pipe_context *ctx,
@@ -324,9 +328,12 @@ void si_dma_copy(struct pipe_context *ct
 		si_dma_copy_buffer(sctx, dst, src, dst_offset, src_offset,
 			    src_box->height * src_pitch);
 	} else {
-		si_dma_copy_tile(sctx, dst, dst_level, dst_x, dst_y, dst_z,
+		if (!si_dma_copy_tile(sctx, dst, dst_level, dst_x, dst_y, dst_z,
 				 src, src_level, src_x, src_y, src_box->z,
-				 copy_height, dst_pitch, bpp);
+				 copy_height, dst_pitch, bpp))
+		{
+			goto fallback;
+		}
 	}
 	return;