drm/nouveau/nvif: assign internal class identifiers to sw classes

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_chan.c b/drivers/gpu/drm/nouveau/nouveau_chan.c
index 9dd2f4f..65a144f 100644
--- a/drivers/gpu/drm/nouveau/nouveau_chan.c
+++ b/drivers/gpu/drm/nouveau/nouveau_chan.c
@@ -24,6 +24,7 @@
 
 #include <nvif/os.h>
 #include <nvif/class.h>
+#include <nvif/ioctl.h>
 
 /*XXX*/
 #include <core/client.h>
@@ -363,7 +364,8 @@
 
 	/* allocate software object class (used for fences on <= nv05) */
 	if (device->info.family < NV_DEVICE_INFO_V0_CELSIUS) {
-		ret = nvif_object_init(&chan->user, 0x006e, 0x006e,
+		ret = nvif_object_init(&chan->user, 0x006e,
+				       NVIF_IOCTL_NEW_V0_SW_NV04,
 				       NULL, 0, &chan->nvsw);
 		if (ret)
 			return ret;