drm/nouveau/fault/tu102-: prepare for GSP-RM

- disable FAULT completely when GSP-RM detected
- SVM support will be disabled when running on RM because of this
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230918202149.4343-10-skeggsb@gmail.com

drivers/gpu/drm/nouveau/nvkm/subdev/fault/tu102.c

@@ -22,6 +22,7 @@
 #include "priv.h"
 
 #include <core/memory.h>
+#include <subdev/gsp.h>
 #include <subdev/mc.h>
 #include <subdev/mmu.h>
 #include <subdev/vfn.h>
@@ -175,7 +176,12 @@ int
 tu102_fault_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
 		struct nvkm_fault **pfault)
 {
-	int ret = nvkm_fault_new_(&tu102_fault, device, type, inst, pfault);
+	int ret;
+
+	if (nvkm_gsp_rm(device->gsp))
+		return -ENODEV;
+
+	ret = nvkm_fault_new_(&tu102_fault, device, type, inst, pfault);
 	if (ret)
 		return ret;