From f5a533a81e51d963bd267acc08dd1924bd93503e Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Tue, 19 Sep 2023 06:21:22 +1000
Subject: [PATCH] drm/nouveau/mmu/tu102-: prepare for GSP-RM

- (temporarily) disable if GSP-RM detected, will be added later

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230918202149.4343-18-skeggsb@gmail.com
---
 drivers/gpu/drm/nouveau/nvkm/subdev/mmu/tu102.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/tu102.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/tu102.c
index 8d060ce47f86..87979952df4b 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/tu102.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/tu102.c
@@ -24,6 +24,7 @@
 #include "vmm.h"
 
 #include <core/option.h>
+#include <subdev/gsp.h>
 
 #include <nvif/class.h>
 
@@ -54,5 +55,8 @@ int
 tu102_mmu_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
 	      struct nvkm_mmu **pmmu)
 {
+	if (nvkm_gsp_rm(device->gsp))
+		return -ENODEV;
+
 	return nvkm_mmu_new_(&tu102_mmu, device, type, inst, pmmu);
 }