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

- disable BUS completely when GSP-RM detected

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230918202149.4343-8-skeggsb@gmail.com

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bus/gf100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bus/gf100.c
index 80b5aaceeaad17f6dde872cdac8c641dec6ce182..8e1e0b057a0b42c61bfe40ffbf0b09fb72bd753e 100644 (file)
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/bus/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bus/gf100.c
@@ -24,6 +24,8 @@
  */
 #include "priv.h"
 
+#include <subdev/gsp.h>
+
 static void
 gf100_bus_intr(struct nvkm_bus *bus)
 {
@@ -72,5 +74,8 @@ int
 gf100_bus_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
              struct nvkm_bus **pbus)
 {
+       if (nvkm_gsp_rm(device->gsp))
+               return -ENODEV;
+
        return nvkm_bus_new_(&gf100_bus, device, type, inst, pbus);
 }