drm/nouveau/core: kill some (now) dead code

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

10 files changed, 1 insertions, 675 deletions

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/core/engctx.h b/drivers/gpu/drm/nouveau/include/nvkm/core/engctx.h
deleted file mode 100644
index 4a77fdaa8b90..000000000000
--- a/drivers/gpu/drm/nouveau/include/nvkm/core/engctx.h
+++ /dev/null
@@ -1,48 +0,0 @@
-#ifndef __NVKM_ENGCTX_H__
-#define __NVKM_ENGCTX_H__
-#include <core/gpuobj.h>
-#include <core/parent.h>
-
-#include <subdev/mmu.h>
-
-#define NV_ENGCTX_(eng,var) (((var) << 8) | (eng))
-#define NV_ENGCTX(name,var)  NV_ENGCTX_(NVDEV_ENGINE_##name, (var))
-
-struct nvkm_engctx {
-	struct nvkm_gpuobj gpuobj;
-	struct nvkm_vma vma;
-	struct list_head head;
-	unsigned long save;
-	u64 addr;
-};
-
-static inline struct nvkm_engctx *
-nv_engctx(void *obj)
-{
-#if CONFIG_NOUVEAU_DEBUG >= NV_DBG_PARANOIA
-	BUG_ON(!nv_iclass(obj, NV_ENGCTX_CLASS));
-#endif
-	return obj;
-}
-
-#define nvkm_engctx_create(p,e,c,g,s,a,f,d)                                 \
-	nvkm_engctx_create_((p), (e), (c), (g), (s), (a), (f),              \
-			       sizeof(**d), (void **)d)
-
-int  nvkm_engctx_create_(struct nvkm_object *, struct nvkm_object *,
-			    struct nvkm_oclass *, struct nvkm_object *,
-			    u32 size, u32 align, u32 flags,
-			    int length, void **data);
-void nvkm_engctx_destroy(struct nvkm_engctx *);
-int  nvkm_engctx_init(struct nvkm_engctx *);
-int  nvkm_engctx_fini(struct nvkm_engctx *, bool suspend);
-
-int  _nvkm_engctx_ctor(struct nvkm_object *, struct nvkm_object *,
-			  struct nvkm_oclass *, void *, u32,
-			  struct nvkm_object **);
-void _nvkm_engctx_dtor(struct nvkm_object *);
-int  _nvkm_engctx_init(struct nvkm_object *);
-int  _nvkm_engctx_fini(struct nvkm_object *, bool suspend);
-#define _nvkm_engctx_rd32 _nvkm_gpuobj_rd32
-#define _nvkm_engctx_wr32 _nvkm_gpuobj_wr32
-#endif
diff --git a/drivers/gpu/drm/nouveau/include/nvkm/core/parent.h b/drivers/gpu/drm/nouveau/include/nvkm/core/parent.h
deleted file mode 100644
index 92270afc666a..000000000000
--- a/drivers/gpu/drm/nouveau/include/nvkm/core/parent.h
+++ /dev/null
@@ -1,51 +0,0 @@
-#ifndef __NVKM_PARENT_H__
-#define __NVKM_PARENT_H__
-#include <core/object.h>
-
-struct nvkm_parent {
-	struct nvkm_object object;
-
-	struct nvkm_oclass *sclass;
-	u64 engine;
-
-	int  (*context_attach)(struct nvkm_object *, struct nvkm_object *);
-	int  (*context_detach)(struct nvkm_object *, bool suspend,
-			       struct nvkm_object *);
-
-	int  (*object_attach)(struct nvkm_object *parent,
-			      struct nvkm_object *object, u32 name);
-	void (*object_detach)(struct nvkm_object *parent, int cookie);
-};
-
-static inline struct nvkm_parent *
-nv_parent(void *obj)
-{
-#if CONFIG_NOUVEAU_DEBUG >= NV_DBG_PARANOIA
-	BUG_ON(!(nv_iclass(obj, NV_PARENT_CLASS)));
-#endif
-	return obj;
-}
-
-#define nvkm_parent_create(p,e,c,v,s,m,d)                                   \
-	nvkm_parent_create_((p), (e), (c), (v), (s), (m),                   \
-			       sizeof(**d), (void **)d)
-#define nvkm_parent_init(p)                                                 \
-	_nvkm_object_init(&(p)->object)
-#define nvkm_parent_fini(p,s)                                               \
-	_nvkm_object_fini(&(p)->object, (s))
-
-int  nvkm_parent_create_(struct nvkm_object *, struct nvkm_object *,
-			    struct nvkm_oclass *, u32 pclass,
-			    struct nvkm_oclass *, u64 engcls,
-			    int size, void **);
-void nvkm_parent_destroy(struct nvkm_parent *);
-
-void _nvkm_parent_dtor(struct nvkm_object *);
-#define _nvkm_parent_init _nvkm_object_init
-#define _nvkm_parent_fini _nvkm_object_fini
-
-int nvkm_parent_sclass(struct nvkm_object *, s32 handle,
-		       struct nvkm_object **pengine,
-		       struct nvkm_oclass **poclass);
-int nvkm_parent_lclass(struct nvkm_object *, void *, int);
-#endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/core/Kbuild b/drivers/gpu/drm/nouveau/nvkm/core/Kbuild
index d3932d59ff09..09044cf0d9ff 100644
--- a/drivers/gpu/drm/nouveau/nvkm/core/Kbuild
+++ b/drivers/gpu/drm/nouveau/nvkm/core/Kbuild
@@ -1,5 +1,4 @@
 nvkm-y := nvkm/core/client.o
-nvkm-y += nvkm/core/engctx.o
 nvkm-y += nvkm/core/engine.o
 nvkm-y += nvkm/core/enum.o
 nvkm-y += nvkm/core/event.o
@@ -12,6 +11,5 @@ nvkm-y += nvkm/core/notify.o
 nvkm-y += nvkm/core/object.o
 nvkm-y += nvkm/core/oproxy.o
 nvkm-y += nvkm/core/option.o
-nvkm-y += nvkm/core/parent.o
 nvkm-y += nvkm/core/ramht.o
 nvkm-y += nvkm/core/subdev.o
diff --git a/drivers/gpu/drm/nouveau/nvkm/core/engctx.c b/drivers/gpu/drm/nouveau/nvkm/core/engctx.c
deleted file mode 100644
index bd13facc53d8..000000000000
--- a/drivers/gpu/drm/nouveau/nvkm/core/engctx.c
+++ /dev/null
@@ -1,166 +0,0 @@
-/*
- * Copyright 2012 Red Hat Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- *
- * Authors: Ben Skeggs
- */
-#include <core/engctx.h>
-#include <core/engine.h>
-#include <core/client.h>
-
-static inline int
-nvkm_engctx_exists(struct nvkm_object *parent,
-		   struct nvkm_engine *engine, void **pobject)
-{
-	struct nvkm_engctx *engctx;
-	struct nvkm_object *parctx;
-
-	list_for_each_entry(engctx, &engine->contexts, head) {
-		parctx = nv_pclass(nv_object(engctx), NV_PARENT_CLASS);
-		if (parctx == parent) {
-			atomic_inc(&nv_object(engctx)->refcount);
-			*pobject = engctx;
-			return 1;
-		}
-	}
-
-	return 0;
-}
-
-int
-nvkm_engctx_create_(struct nvkm_object *parent, struct nvkm_object *engobj,
-		    struct nvkm_oclass *oclass, struct nvkm_object *pargpu,
-		    u32 size, u32 align, u32 flags, int length, void **pobject)
-{
-	struct nvkm_client *client = nvkm_client(parent);
-	struct nvkm_engine *engine = nv_engine(engobj);
-	struct nvkm_object *engctx;
-	unsigned long save;
-	int ret;
-
-	/* check if this engine already has a context for the parent object,
-	 * and reference it instead of creating a new one
-	 */
-	spin_lock_irqsave(&engine->lock, save);
-	ret = nvkm_engctx_exists(parent, engine, pobject);
-	spin_unlock_irqrestore(&engine->lock, save);
-	if (ret)
-		return ret;
-
-	/* create the new context, supports creating both raw objects and
-	 * objects backed by instance memory
-	 */
-	if (size) {
-		ret = nvkm_gpuobj_create_(parent, engobj, oclass,
-					  NV_ENGCTX_CLASS, pargpu, size,
-					  align, flags, length, pobject);
-	} else {
-		ret = nvkm_object_create_(parent, engobj, oclass,
-					  NV_ENGCTX_CLASS, length, pobject);
-	}
-
-	engctx = *pobject;
-	if (ret)
-		return ret;
-
-	/* must take the lock again and re-check a context doesn't already
-	 * exist (in case of a race) - the lock had to be dropped before as
-	 * it's not possible to allocate the object with it held.
-	 */
-	spin_lock_irqsave(&engine->lock, save);
-	ret = nvkm_engctx_exists(parent, engine, pobject);
-	if (ret) {
-		spin_unlock_irqrestore(&engine->lock, save);
-		nvkm_object_ref(NULL, &engctx);
-		return ret;
-	}
-
-	if (client->vm)
-		atomic_inc(&client->vm->engref[nv_engidx(engine)]);
-	list_add(&nv_engctx(engctx)->head, &engine->contexts);
-	nv_engctx(engctx)->addr = ~0ULL;
-	spin_unlock_irqrestore(&engine->lock, save);
-	return 0;
-}
-
-void
-nvkm_engctx_destroy(struct nvkm_engctx *engctx)
-{
-	struct nvkm_engine *engine = engctx->gpuobj.object.engine;
-	struct nvkm_client *client = nvkm_client(&engctx->gpuobj.object);
-	unsigned long save;
-
-	nvkm_gpuobj_unmap(&engctx->vma);
-	spin_lock_irqsave(&engine->lock, save);
-	list_del(&engctx->head);
-	spin_unlock_irqrestore(&engine->lock, save);
-
-	if (client->vm)
-		atomic_dec(&client->vm->engref[nv_engidx(engine)]);
-
-	if (engctx->gpuobj.size)
-		nvkm_gpuobj_destroy(&engctx->gpuobj);
-	else
-		nvkm_object_destroy(&engctx->gpuobj.object);
-}
-
-int
-nvkm_engctx_init(struct nvkm_engctx *engctx)
-{
-	return nvkm_gpuobj_init(&engctx->gpuobj);
-}
-
-int
-nvkm_engctx_fini(struct nvkm_engctx *engctx, bool suspend)
-{
-	return nvkm_gpuobj_fini(&engctx->gpuobj, suspend);
-}
-
-int
-_nvkm_engctx_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
-		  struct nvkm_oclass *oclass, void *data, u32 size,
-		  struct nvkm_object **pobject)
-{
-	struct nvkm_engctx *engctx;
-	int ret;
-
-	ret = nvkm_engctx_create(parent, engine, oclass, NULL, 256, 256,
-				 NVOBJ_FLAG_ZERO_ALLOC, &engctx);
-	*pobject = nv_object(engctx);
-	return ret;
-}
-
-void
-_nvkm_engctx_dtor(struct nvkm_object *object)
-{
-	nvkm_engctx_destroy(nv_engctx(object));
-}
-
-int
-_nvkm_engctx_init(struct nvkm_object *object)
-{
-	return nvkm_engctx_init(nv_engctx(object));
-}
-
-int
-_nvkm_engctx_fini(struct nvkm_object *object, bool suspend)
-{
-	return nvkm_engctx_fini(nv_engctx(object), suspend);
-}
diff --git a/drivers/gpu/drm/nouveau/nvkm/core/handle.c b/drivers/gpu/drm/nouveau/nvkm/core/handle.c
index a74ee1c29f8c..d185cae0fbba 100644
--- a/drivers/gpu/drm/nouveau/nvkm/core/handle.c
+++ b/drivers/gpu/drm/nouveau/nvkm/core/handle.c
@@ -23,7 +23,6 @@
  */
 #include <core/handle.h>
 #include <core/client.h>
-#include <core/parent.h>
 
 #define hprintk(h,l,f,a...) do {                                               \
 	struct nvkm_handle *p = (h)->parent; u32 n = p ? p->name : ~0;         \
@@ -99,7 +98,6 @@ nvkm_handle_create(struct nvkm_handle *parent, u32 _handle,
 		   struct nvkm_object *object, struct nvkm_handle **phandle)
 {
 	struct nvkm_handle *handle;
-	int ret;
 
 	handle = kzalloc(sizeof(*handle), GFP_KERNEL);
 	if (!handle)
@@ -113,21 +111,8 @@ nvkm_handle_create(struct nvkm_handle *parent, u32 _handle,
 	handle->parent = parent;
 	nvkm_object_ref(object, &handle->object);
 
-	if (parent) {
-		if (nv_iclass(parent->object, NV_PARENT_CLASS) &&
-		    nv_parent(parent->object)->object_attach) {
-			ret = nv_parent(parent->object)->
-				object_attach(parent->object, object, _handle);
-			if (ret < 0) {
-				nvkm_handle_destroy(handle);
-				return ret;
-			}
-
-			handle->priv = ret;
-		}
-
+	if (parent)
 		list_add(&handle->head, &handle->parent->tree);
-	}
 
 	hprintk(handle, TRACE, "created\n");
 	*phandle = handle;
@@ -148,11 +133,6 @@ nvkm_handle_destroy(struct nvkm_handle *handle)
 	nvkm_client_remove(client, handle);
 	list_del(&handle->head);
 
-	if (handle->priv != ~0) {
-		struct nvkm_object *parent = handle->parent->object;
-		nv_parent(parent)->object_detach(parent, handle->priv);
-	}
-
 	hprintk(handle, TRACE, "destroy completed\n");
 	nvkm_object_ref(NULL, &handle->object);
 	kfree(handle);
diff --git a/drivers/gpu/drm/nouveau/nvkm/core/ioctl.c b/drivers/gpu/drm/nouveau/nvkm/core/ioctl.c
index 28f9fa289e80..d9bb0394d83f 100644
--- a/drivers/gpu/drm/nouveau/nvkm/core/ioctl.c
+++ b/drivers/gpu/drm/nouveau/nvkm/core/ioctl.c
@@ -25,7 +25,6 @@
 #include <core/client.h>
 #include <core/engine.h>
 #include <core/handle.h>
-#include <core/parent.h>
 
 #include <nvif/unpack.h>
 #include <nvif/ioctl.h>
@@ -65,17 +64,6 @@ nvkm_ioctl_sclass(struct nvkm_handle *handle, void *data, u32 size)
 		if (size != args->v0.count * sizeof(args->v0.oclass[0]))
 			return -EINVAL;
 
-		if (object->oclass) {
-			if (nv_iclass(object, NV_PARENT_CLASS)) {
-				ret = nvkm_parent_lclass(object,
-							 args->v0.oclass,
-							 args->v0.count);
-			}
-
-			args->v0.count = ret;
-			return 0;
-		}
-
 		while (object->func->sclass &&
 		       object->func->sclass(object, i, &oclass) >= 0) {
 			if (i < args->v0.count) {
@@ -93,111 +81,6 @@ nvkm_ioctl_sclass(struct nvkm_handle *handle, void *data, u32 size)
 }
 
 static int
-nvkm_ioctl_new_old(struct nvkm_handle *handle, void *data, u32 size)
-{
-	union {
-		struct nvif_ioctl_new_v0 v0;
-	} *args = data;
-	struct nvkm_client *client = nvkm_client(handle->object);
-	struct nvkm_object *engctx = NULL;
-	struct nvkm_object *object = NULL;
-	struct nvkm_parent *parent;
-	struct nvkm_engine *engine;
-	struct nvkm_oclass *oclass;
-	u32 _handle, _oclass;
-	int ret;
-
-	nvif_ioctl(handle->object, "new size %d\n", size);
-	if (nvif_unpack(args->v0, 0, 0, true)) {
-		_handle = args->v0.handle;
-		_oclass = args->v0.oclass;
-	} else
-		return ret;
-
-	nvif_ioctl(handle->object, "new vers %d handle %08x class %08x "
-				   "route %02x token %llx object %016llx\n",
-		   args->v0.version, _handle, _oclass,
-		   args->v0.route, args->v0.token, args->v0.object);
-
-	if (!nv_iclass(handle->object, NV_PARENT_CLASS)) {
-		nvif_debug(handle->object, "cannot have children (ctor)\n");
-		ret = -ENODEV;
-		goto fail_class;
-	}
-
-	parent = nv_parent(handle->object);
-
-	/* check that parent supports the requested subclass */
-	ret = nvkm_parent_sclass(&parent->object, _oclass,
-				 (struct nvkm_object **)&engine, &oclass);
-	if (ret) {
-		nvif_debug(&parent->object, "illegal class 0x%04x\n", _oclass);
-		goto fail_class;
-	}
-
-	/* make sure engine init has been completed *before* any objects
-	 * it controls are created - the constructors may depend on
-	 * state calculated at init (ie. default context construction)
-	 */
-	if (engine) {
-		engine = nvkm_engine_ref(engine);
-		if (IS_ERR(engine)) {
-			ret = PTR_ERR(engine);
-			engine = NULL;
-			goto fail_class;
-		}
-	}
-
-	/* if engine requires it, create a context object to insert
-	 * between the parent and its children (eg. PGRAPH context)
-	 */
-	if (engine && engine->cclass) {
-		ret = nvkm_object_old(&parent->object, &engine->subdev.object,
-				      engine->cclass, data, size, &engctx);
-		if (ret)
-			goto fail_engctx;
-	} else {
-		nvkm_object_ref(&parent->object, &engctx);
-	}
-
-	/* finally, create new object and bind it to its handle */
-	ret = nvkm_object_old(engctx, &engine->subdev.object, oclass,
-			      data, size, &object);
-	if (ret)
-		goto fail_ctor;
-
-	object->handle = _handle;
-
-	ret = nvkm_object_inc(object);
-	if (ret)
-		goto fail_init;
-
-	ret = nvkm_handle_create(handle, _handle, object, &handle);
-	if (ret)
-		goto fail_handle;
-
-	ret = nvkm_handle_init(handle);
-	handle->route = args->v0.route;
-	handle->token = args->v0.token;
-	if (ret)
-		nvkm_handle_destroy(handle);
-
-	handle->handle = args->v0.object;
-	nvkm_client_insert(client, handle);
-	client->data = object;
-fail_handle:
-	nvkm_object_dec(object, false);
-fail_init:
-	nvkm_object_ref(NULL, &object);
-fail_ctor:
-	nvkm_object_ref(NULL, &engctx);
-fail_engctx:
-	nvkm_engine_unref(&engine);
-fail_class:
-	return ret;
-}
-
-static int
 nvkm_ioctl_new(struct nvkm_handle *handle, void *data, u32 size)
 {
 	union {
@@ -209,9 +92,6 @@ nvkm_ioctl_new(struct nvkm_handle *handle, void *data, u32 size)
 	struct nvkm_oclass oclass;
 	int ret, i = 0;
 
-	if (parent->oclass)
-		return nvkm_ioctl_new_old(handle, data, size);
-
 	nvif_ioctl(parent, "new size %d\n", size);
 	if (nvif_unpack(args->v0, 0, 0, true)) {
 		nvif_ioctl(parent, "new vers %d handle %08x class %08x "
diff --git a/drivers/gpu/drm/nouveau/nvkm/core/parent.c b/drivers/gpu/drm/nouveau/nvkm/core/parent.c
deleted file mode 100644
index aecf5b8901b2..000000000000
--- a/drivers/gpu/drm/nouveau/nvkm/core/parent.c
+++ /dev/null
@@ -1,139 +0,0 @@
-/*
- * Copyright 2012 Red Hat Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- *
- * Authors: Ben Skeggs
- */
-#include <core/parent.h>
-#include <core/client.h>
-#include <core/engine.h>
-
-#include <nvif/ioctl.h>
-
-int
-nvkm_parent_sclass(struct nvkm_object *parent, s32 handle,
-		   struct nvkm_object **pengine,
-		   struct nvkm_oclass **poclass)
-{
-	struct nvkm_oclass *sclass, *oclass;
-	struct nvkm_engine *engine;
-	u64 mask;
-	int i;
-
-	sclass = nv_parent(parent)->sclass;
-	while ((oclass = sclass++) && oclass->ofuncs) {
-		if (oclass->handle == handle) {
-			*pengine = &parent->engine->subdev.object;
-			*poclass = oclass;
-			return 0;
-		}
-	}
-
-	mask = nv_parent(parent)->engine;
-	while (i = __ffs64(mask), mask) {
-		engine = nvkm_engine(parent, i);
-		if (engine) {
-			oclass = engine->sclass;
-			while (oclass->ofuncs) {
-				if (oclass->handle == handle) {
-					*pengine = nv_object(engine);
-					*poclass = oclass;
-					return 0;
-				}
-				oclass++;
-			}
-		}
-
-		mask &= ~(1ULL << i);
-	}
-
-	return -EINVAL;
-}
-
-int
-nvkm_parent_lclass(struct nvkm_object *parent, void *data, int size)
-{
-	struct nvif_ioctl_sclass_oclass_v0 *lclass = data;
-	struct nvkm_oclass *sclass, *oclass;
-	struct nvkm_engine *engine;
-	int nr = -1, i;
-	u64 mask;
-
-	sclass = nv_parent(parent)->sclass;
-	while ((oclass = sclass++) && oclass->ofuncs) {
-		if (++nr < size) {
-			lclass[nr].oclass = oclass->handle;
-			lclass[nr].minver = -2;
-			lclass[nr].maxver = -2;
-		}
-	}
-
-	mask = nv_parent(parent)->engine;
-	while (i = __ffs64(mask), mask) {
-		engine = nvkm_engine(parent, i);
-		if (engine && (oclass = engine->sclass)) {
-			while (oclass->ofuncs) {
-				if (++nr < size) {
-					lclass[nr].oclass = oclass->handle;
-					lclass[nr].minver = -2;
-					lclass[nr].maxver = -2;
-				}
-				oclass++;
-			}
-		}
-
-		mask &= ~(1ULL << i);
-	}
-
-	return nr + 1;
-}
-
-int
-nvkm_parent_create_(struct nvkm_object *parent, struct nvkm_object *engine,
-		    struct nvkm_oclass *oclass, u32 pclass,
-		    struct nvkm_oclass *sclass, u64 engcls,
-		    int size, void **pobject)
-{
-	struct nvkm_parent *object;
-	int ret;
-
-	ret = nvkm_object_create_(parent, engine, oclass, pclass |
-				  NV_PARENT_CLASS, size, pobject);
-	object = *pobject;
-	if (ret)
-		return ret;
-
-	object->sclass = sclass;
-	object->engine = engcls;
-	return 0;
-}
-
-void
-nvkm_parent_destroy(struct nvkm_parent *parent)
-{
-	nvkm_object_destroy(&parent->object);
-}
-
-
-void
-_nvkm_parent_dtor(struct nvkm_object *object)
-{
-	nvkm_parent_destroy(nv_parent(object));
-}
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
index 73770fb4da97..46d616c7259d 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
@@ -1977,7 +1977,6 @@ nv12b_chipset = {
 //	.sw = gf100_sw_new,
 };
 
-#include <core/parent.h>
 #include <core/client.h>
 
 struct nvkm_device *
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/user.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/user.c
index 39f31e2e281b..c5da091c058c 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/user.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/user.c
@@ -26,7 +26,6 @@
 #include "ctrl.h"
 
 #include <core/client.h>
-#include <core/parent.h>
 #include <subdev/fb.h>
 #include <subdev/instmem.h>
 #include <subdev/timer.h>
@@ -248,31 +247,6 @@ done:
 }
 
 static int
-nvkm_udevice_child_old(const struct nvkm_oclass *oclass,
-		       void *data, u32 size, struct nvkm_object **pobject)
-{
-	struct nvkm_object *parent = oclass->parent;
-	struct nvkm_engine *engine = oclass->engine;
-	struct nvkm_oclass *eclass = (void *)oclass->priv;
-	struct nvkm_object *engctx = NULL;
-	int ret;
-
-	if (engine->cclass) {
-		ret = nvkm_object_old(parent, &engine->subdev.object,
-				      engine->cclass, NULL, 0, &engctx);
-		if (ret)
-			return ret;
-	} else {
-		nvkm_object_ref(parent, &engctx);
-	}
-
-	ret = nvkm_object_old(engctx, &engine->subdev.object, eclass,
-			      data, size, pobject);
-	nvkm_object_ref(NULL, &engctx);
-	return ret;
-}
-
-static int
 nvkm_udevice_child_new(const struct nvkm_oclass *oclass,
 		       void *data, u32 size, struct nvkm_object **pobject)
 {
@@ -296,26 +270,6 @@ nvkm_udevice_child_get(struct nvkm_object *object, int index,
 	int i;
 
 	for (; i = __ffs64(mask), mask && !sclass; mask &= ~(1ULL << i)) {
-		if ((engine = nvkm_device_engine(device, i)) &&
-		    !engine->func) {
-			struct nvkm_oclass *sclass = engine->sclass;
-			int c = 0;
-			while (sclass && sclass->ofuncs) {
-				if (c++ == index) {
-					oclass->base.oclass = sclass->handle;
-					oclass->base.minver = -2;
-					oclass->base.maxver = -2;
-					oclass->ctor = nvkm_udevice_child_old;
-					oclass->priv = sclass;
-					oclass->engine = engine;
-					return 0;
-				}
-				sclass++;
-			}
-			index -= c;
-			continue;
-		}
-
 		if (!(engine = nvkm_device_engine(device, i)) ||
 		    !(engine->func->base.sclass))
 			continue;
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.c
index 2735c2df2218..a02c60f340c0 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.c
@@ -129,67 +129,6 @@ nvkm_fifo_chan_child_func = {
 };
 
 static int
-nvkm_fifo_chan_child_old(const struct nvkm_oclass *oclass,
-			 void *data, u32 size, struct nvkm_object **pobject)
-{
-	struct nvkm_fifo_chan *chan = nvkm_fifo_chan(oclass->parent);
-	struct nvkm_object *parent = &chan->object;
-	struct nvkm_engine *engine = oclass->engine;
-	struct nvkm_oclass *eclass = (void *)oclass->priv;
-	struct nvkm_object *engctx = NULL;
-	struct nvkm_fifo_chan_object *object;
-	struct nvkm_fifo_engn *engn = &chan->engn[engine->subdev.index];
-	int ret;
-
-	if (!(object = kzalloc(sizeof(*object), GFP_KERNEL)))
-		return -ENOMEM;
-	nvkm_oproxy_ctor(&nvkm_fifo_chan_child_func, oclass, &object->oproxy);
-	*pobject = &object->oproxy.base;
-	object->chan = chan;
-
-	if (!engn->refcount++) {
-		if (chan->vm)
-			atomic_inc(&chan->vm->engref[engine->subdev.index]);
-		if (engine->cclass && !engn->object) {
-			ret = nvkm_object_old(parent, &engine->subdev.object,
-					      engine->cclass, NULL, 0,
-					      &engn->object);
-			if (ret) {
-				nvkm_engine_unref(&engine);
-				return ret;
-			}
-		} else {
-			nvkm_object_ref(parent, &engn->object);
-		}
-
-		if (chan->func->engine_ctor) {
-			ret = chan->func->engine_ctor(chan, engine,
-						      engn->object);
-			if (ret)
-				return ret;
-		}
-	}
-	nvkm_object_ref(engn->object, &engctx);
-
-	ret = nvkm_object_old(engctx, &engine->subdev.object, eclass,
-			      data, size, &object->oproxy.object);
-	nvkm_object_ref(NULL, &engctx);
-	if (ret)
-		return ret;
-
-	object->oproxy.object->handle = oclass->handle;
-
-	if (chan->func->object_ctor) {
-		object->hash =
-			chan->func->object_ctor(chan, object->oproxy.object);
-		if (object->hash < 0)
-			return object->hash;
-	}
-
-	return 0;
-}
-
-static int
 nvkm_fifo_chan_child_new(const struct nvkm_oclass *oclass, void *data, u32 size,
 			 struct nvkm_object **pobject)
 {
@@ -269,26 +208,6 @@ nvkm_fifo_chan_child_get(struct nvkm_object *object, int index,
 	int ret, i, c;
 
 	for (; c = 0, i = __ffs64(mask), mask; mask &= ~(1ULL << i)) {
-		if ((engine = nvkm_device_engine(device, i)) &&
-		    !engine->func) {
-			struct nvkm_oclass *sclass = engine->sclass;
-			int c = 0;
-			while (sclass && sclass->ofuncs) {
-				if (c++ == index) {
-					oclass->base.oclass = sclass->handle;
-					oclass->base.minver = -2;
-					oclass->base.maxver = -2;
-					oclass->ctor = nvkm_fifo_chan_child_old;
-					oclass->priv = sclass;
-					oclass->engine = engine;
-					return 0;
-				}
-				sclass++;
-			}
-			index -= c;
-			continue;
-		}
-
 		if (!(engine = nvkm_device_engine(device, i)))
 			continue;
 		oclass->engine = engine;