drm/nouveau/pm: stack perfdom class under perfmon

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/pm/base.c b/drivers/gpu/drm/nouveau/nvkm/engine/pm/base.c
index 0e1536d..f505a11 100644 (file)
--- a/drivers/gpu/drm/nouveau/nvkm/engine/pm/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/pm/base.c
@@ -576,12 +576,32 @@ nvkm_perfmon_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
        return -EINVAL;
 }
 
+static struct nvkm_oclass
+nvkm_perfmon_sclass[] = {
+       { .handle = NVIF_IOCTL_NEW_V0_PERFDOM,
+         .ofuncs = &nvkm_perfdom_ofuncs,
+       },
+       {}
+};
+
+static int
+nvkm_perfmon_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
+                 struct nvkm_oclass *oclass, void *data, u32 size,
+                 struct nvkm_object **pobject)
+{
+       struct nvkm_parent *perfmon;
+       int ret = nvkm_parent_create(parent, engine, oclass, 0,
+                                    nvkm_perfmon_sclass, 0, &perfmon);
+       *pobject = perfmon ? &perfmon->object : NULL;
+       return ret;
+}
+
 static struct nvkm_ofuncs
 nvkm_perfmon_ofuncs = {
-       .ctor = _nvkm_object_ctor,
-       .dtor = nvkm_object_destroy,
-       .init = nvkm_object_init,
-       .fini = nvkm_object_fini,
+       .ctor = nvkm_perfmon_ctor,
+       .dtor = _nvkm_parent_dtor,
+       .init = _nvkm_parent_init,
+       .fini = _nvkm_parent_fini,
        .mthd = nvkm_perfmon_mthd,
 };
 
@@ -591,9 +611,6 @@ nvkm_pm_sclass[] = {
          .handle = NVIF_IOCTL_NEW_V0_PERFMON,
          .ofuncs = &nvkm_perfmon_ofuncs,
        },
-       { .handle = NVIF_IOCTL_NEW_V0_PERFDOM,
-         .ofuncs = &nvkm_perfdom_ofuncs,
-       },
        {},
 };
 
@@ -622,6 +639,13 @@ nvkm_perfctx_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
        struct nvkm_perfctx *ctx;
        int ret;
 
+       /* no context needed for perfdom objects... */
+       if (nv_mclass(parent) != NV_DEVICE) {
+               atomic_inc(&parent->refcount);
+               *pobject = parent;
+               return 1;
+       }
+
        ret = nvkm_engctx_create(parent, engine, oclass, NULL, 0, 0, 0, &ctx);
        *pobject = nv_object(ctx);
        if (ret)