drm/nouveau: convert nvsw init to new push macros

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>

drivers/gpu/drm/nouveau/nouveau_drm.c

@@ -41,6 +41,7 @@
 
 #include <nvif/driver.h>
 #include <nvif/fifo.h>
+#include <nvif/push006c.h>
 #include <nvif/user.h>
 
 #include <nvif/class.h>
@@ -367,11 +368,10 @@ nouveau_accel_gr_init(struct nouveau_drm *drm)
 				       NVDRM_NVSW, nouveau_abi16_swclass(drm),
 				       NULL, 0, &drm->channel->nvsw);
 		if (ret == 0) {
-			ret = RING_SPACE(drm->channel, 2);
-			if (ret == 0) {
-				BEGIN_NV04(drm->channel, NvSubSw, 0, 1);
-				OUT_RING  (drm->channel, drm->channel->nvsw.handle);
-			}
+			struct nvif_push *push = drm->channel->chan.push;
+			ret = PUSH_WAIT(push, 2);
+			if (ret == 0)
+				PUSH_NVSQ(push, NV_SW, 0x0000, drm->channel->nvsw.handle);
 		}
 
 		if (ret) {