From 8531f57027136fa63ddae91821ca89b32b571fe2 Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Tue, 8 May 2018 20:39:46 +1000
Subject: [PATCH] drm/nouveau/disp/nv50-: merge handling of pio and dma
 channels

Unnecessarily complicated, and a barrier to cleanly supporting Volta.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---
 .../drm/nouveau/nvkm/engine/disp/baseg84.c    |   2 +-
 .../drm/nouveau/nvkm/engine/disp/basegf119.c  |   2 +-
 .../drm/nouveau/nvkm/engine/disp/basegp102.c  |   2 +-
 .../drm/nouveau/nvkm/engine/disp/basenv50.c   |   4 +-
 .../drm/nouveau/nvkm/engine/disp/channv50.c   |  97 ++++++++----
 .../drm/nouveau/nvkm/engine/disp/channv50.h   |  39 ++---
 .../drm/nouveau/nvkm/engine/disp/coreg84.c    |   2 +-
 .../drm/nouveau/nvkm/engine/disp/coreg94.c    |   2 +-
 .../drm/nouveau/nvkm/engine/disp/coregf119.c  |  14 +-
 .../drm/nouveau/nvkm/engine/disp/coregk104.c  |   2 +-
 .../drm/nouveau/nvkm/engine/disp/coregp102.c  |   9 +-
 .../drm/nouveau/nvkm/engine/disp/corenv50.c   |  16 +-
 .../drm/nouveau/nvkm/engine/disp/dmacgf119.c  |  31 ++--
 .../drm/nouveau/nvkm/engine/disp/dmacgp102.c  |  14 +-
 .../drm/nouveau/nvkm/engine/disp/dmacnv50.c   | 147 +++---------------
 .../drm/nouveau/nvkm/engine/disp/dmacnv50.h   |  35 -----
 .../gpu/drm/nouveau/nvkm/engine/disp/gf119.c  |   1 +
 .../gpu/drm/nouveau/nvkm/engine/disp/gp102.c  |   1 +
 .../gpu/drm/nouveau/nvkm/engine/disp/nv50.h   |   7 +
 .../drm/nouveau/nvkm/engine/disp/ovlyg84.c    |   2 +-
 .../drm/nouveau/nvkm/engine/disp/ovlygf119.c  |   2 +-
 .../drm/nouveau/nvkm/engine/disp/ovlygk104.c  |   2 +-
 .../drm/nouveau/nvkm/engine/disp/ovlygp102.c  |   2 +-
 .../drm/nouveau/nvkm/engine/disp/ovlygt200.c  |   2 +-
 .../drm/nouveau/nvkm/engine/disp/ovlynv50.c   |   4 +-
 .../drm/nouveau/nvkm/engine/disp/rootg84.c    |   2 +-
 .../drm/nouveau/nvkm/engine/disp/rootg94.c    |   2 +-
 .../drm/nouveau/nvkm/engine/disp/rootgf119.c  |   2 +-
 .../drm/nouveau/nvkm/engine/disp/rootgk104.c  |   2 +-
 .../drm/nouveau/nvkm/engine/disp/rootgk110.c  |   2 +-
 .../drm/nouveau/nvkm/engine/disp/rootgm107.c  |   2 +-
 .../drm/nouveau/nvkm/engine/disp/rootgm200.c  |   2 +-
 .../drm/nouveau/nvkm/engine/disp/rootgp100.c  |   2 +-
 .../drm/nouveau/nvkm/engine/disp/rootgp102.c  |   2 +-
 .../drm/nouveau/nvkm/engine/disp/rootgt200.c  |   2 +-
 .../drm/nouveau/nvkm/engine/disp/rootgt215.c  |   2 +-
 .../drm/nouveau/nvkm/engine/disp/rootnv50.c   |   2 +-
 .../drm/nouveau/nvkm/engine/disp/rootnv50.h   |   2 +-
 38 files changed, 183 insertions(+), 284 deletions(-)
 delete mode 100644 drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacnv50.h

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/baseg84.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/baseg84.c
index 03ec508d19f0..01253f4a9946 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/baseg84.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/baseg84.c
@@ -21,7 +21,7 @@
  *
  * Authors: Ben Skeggs
  */
-#include "dmacnv50.h"
+#include "channv50.h"
 
 static const struct nv50_disp_mthd_list
 g84_disp_base_mthd_base = {
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/basegf119.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/basegf119.c
index 4c372dc6a128..389e19dfc514 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/basegf119.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/basegf119.c
@@ -21,7 +21,7 @@
  *
  * Authors: Ben Skeggs
  */
-#include "dmacnv50.h"
+#include "channv50.h"
 
 static const struct nv50_disp_mthd_list
 gf119_disp_base_mthd_base = {
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/basegp102.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/basegp102.c
index 3a25259de057..0cb23d673aa0 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/basegp102.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/basegp102.c
@@ -21,7 +21,7 @@
  *
  * Authors: Ben Skeggs <bskeggs@redhat.com>
  */
-#include "dmacnv50.h"
+#include "channv50.h"
 
 int
 gp102_disp_base_new(const struct nvkm_oclass *oclass, void *argv, u32 argc,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/basenv50.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/basenv50.c
index 11639e2a792f..19eb7dde01f2 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/basenv50.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/basenv50.c
@@ -21,7 +21,7 @@
  *
  * Authors: Ben Skeggs
  */
-#include "dmacnv50.h"
+#include "channv50.h"
 #include "head.h"
 
 #include <core/client.h>
@@ -30,7 +30,7 @@
 #include <nvif/unpack.h>
 
 int
-nv50_disp_base_new_(const struct nv50_disp_dmac_func *func,
+nv50_disp_base_new_(const struct nv50_disp_chan_func *func,
 		    const struct nv50_disp_chan_mthd *mthd,
 		    struct nv50_disp *disp, int chid,
 		    const struct nvkm_oclass *oclass, void *argv, u32 argc,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/channv50.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/channv50.c
index 96b732d4b9ab..91a2f0c64731 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/channv50.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/channv50.c
@@ -26,6 +26,7 @@
 
 #include <core/client.h>
 #include <core/notify.h>
+#include <core/oproxy.h>
 #include <core/ramht.h>
 #include <engine/dma.h>
 
@@ -204,25 +205,76 @@ nv50_disp_chan_map(struct nvkm_object *object, void *argv, u32 argc,
 	return 0;
 }
 
+struct nv50_disp_chan_object {
+	struct nvkm_oproxy oproxy;
+	struct nv50_disp *disp;
+	int hash;
+};
+
+static void
+nv50_disp_chan_child_del_(struct nvkm_oproxy *base)
+{
+	struct nv50_disp_chan_object *object =
+		container_of(base, typeof(*object), oproxy);
+	nvkm_ramht_remove(object->disp->ramht, object->hash);
+}
+
+static const struct nvkm_oproxy_func
+nv50_disp_chan_child_func_ = {
+	.dtor[0] = nv50_disp_chan_child_del_,
+};
+
 static int
 nv50_disp_chan_child_new(const struct nvkm_oclass *oclass,
-			 void *data, u32 size, struct nvkm_object **pobject)
+			 void *argv, u32 argc, struct nvkm_object **pobject)
 {
 	struct nv50_disp_chan *chan = nv50_disp_chan(oclass->parent);
-	return chan->func->child_new(chan, oclass, data, size, pobject);
+	struct nv50_disp *disp = chan->disp;
+	struct nvkm_device *device = disp->base.engine.subdev.device;
+	const struct nvkm_device_oclass *sclass = oclass->priv;
+	struct nv50_disp_chan_object *object;
+	int ret;
+
+	if (!(object = kzalloc(sizeof(*object), GFP_KERNEL)))
+		return -ENOMEM;
+	nvkm_oproxy_ctor(&nv50_disp_chan_child_func_, oclass, &object->oproxy);
+	object->disp = disp;
+	*pobject = &object->oproxy.base;
+
+	ret = sclass->ctor(device, oclass, argv, argc, &object->oproxy.object);
+	if (ret)
+		return ret;
+
+	object->hash = chan->func->bind(chan, object->oproxy.object,
+					      oclass->handle);
+	if (object->hash < 0)
+		return object->hash;
+
+	return 0;
 }
 
 static int
 nv50_disp_chan_child_get(struct nvkm_object *object, int index,
-			 struct nvkm_oclass *oclass)
+			 struct nvkm_oclass *sclass)
 {
 	struct nv50_disp_chan *chan = nv50_disp_chan(object);
-	if (chan->func->child_get) {
-		int ret = chan->func->child_get(chan, index, oclass);
-		if (ret == 0)
-			oclass->ctor = nv50_disp_chan_child_new;
-		return ret;
+	struct nvkm_device *device = chan->disp->base.engine.subdev.device;
+	const struct nvkm_device_oclass *oclass = NULL;
+
+	if (chan->func->bind)
+		sclass->engine = nvkm_device_engine(device, NVKM_ENGINE_DMAOBJ);
+	else
+		sclass->engine = NULL;
+
+	if (sclass->engine && sclass->engine->func->base.sclass) {
+		sclass->engine->func->base.sclass(sclass, index, &oclass);
+		if (oclass) {
+			sclass->ctor = nv50_disp_chan_child_new,
+			sclass->priv = oclass;
+			return 0;
+		}
 	}
+
 	return -EINVAL;
 }
 
@@ -248,7 +300,7 @@ nv50_disp_chan_dtor(struct nvkm_object *object)
 	struct nv50_disp *disp = chan->disp;
 	if (chan->chid.user >= 0)
 		disp->chan[chan->chid.user] = NULL;
-	return chan->func->dtor ? chan->func->dtor(chan) : chan;
+	return chan;
 }
 
 static const struct nvkm_object_func
@@ -264,12 +316,18 @@ nv50_disp_chan = {
 };
 
 int
-nv50_disp_chan_ctor(const struct nv50_disp_chan_func *func,
+nv50_disp_chan_new_(const struct nv50_disp_chan_func *func,
 		    const struct nv50_disp_chan_mthd *mthd,
 		    struct nv50_disp *disp, int ctrl, int user, int head,
 		    const struct nvkm_oclass *oclass,
-		    struct nv50_disp_chan *chan)
+		    struct nvkm_object **pobject)
 {
+	struct nv50_disp_chan *chan;
+
+	if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
+		return -ENOMEM;
+	*pobject = &chan->object;
+
 	nvkm_object_ctor(&nv50_disp_chan, oclass, &chan->object);
 	chan->func = func;
 	chan->mthd = mthd;
@@ -285,20 +343,3 @@ nv50_disp_chan_ctor(const struct nv50_disp_chan_func *func,
 	disp->chan[chan->chid.user] = chan;
 	return 0;
 }
-
-int
-nv50_disp_chan_new_(const struct nv50_disp_chan_func *func,
-		    const struct nv50_disp_chan_mthd *mthd,
-		    struct nv50_disp *disp, int ctrl, int user, int head,
-		    const struct nvkm_oclass *oclass,
-		    struct nvkm_object **pobject)
-{
-	struct nv50_disp_chan *chan;
-
-	if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
-		return -ENOMEM;
-	*pobject = &chan->object;
-
-	return nv50_disp_chan_ctor(func, mthd, disp, ctrl, user,
-				   head, oclass, chan);
-}
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/channv50.h b/drivers/gpu/drm/nouveau/nvkm/engine/disp/channv50.h
index 10ce217cc081..feb8a56fcc85 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/channv50.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/channv50.h
@@ -5,7 +5,6 @@
 #include <core/object.h>
 #include "nv50.h"
 struct nv50_disp_root;
-struct nv50_disp_dmac_func;
 
 struct nv50_disp_chan {
 	const struct nv50_disp_chan_func *func;
@@ -19,36 +18,38 @@ struct nv50_disp_chan {
 	int head;
 
 	struct nvkm_object object;
+
+	u64 push;
 };
 
 struct nv50_disp_chan_func {
-	void *(*dtor)(struct nv50_disp_chan *);
 	int (*init)(struct nv50_disp_chan *);
 	void (*fini)(struct nv50_disp_chan *);
-	int (*child_get)(struct nv50_disp_chan *, int index,
-			 struct nvkm_oclass *);
-	int (*child_new)(struct nv50_disp_chan *, const struct nvkm_oclass *,
-			 void *data, u32 size, struct nvkm_object **);
+	int (*bind)(struct nv50_disp_chan *, struct nvkm_object *, u32 handle);
 };
 
-int nv50_disp_chan_ctor(const struct nv50_disp_chan_func *,
-			const struct nv50_disp_chan_mthd *,
-			struct nv50_disp *, int ctrl, int user, int head,
-			const struct nvkm_oclass *, struct nv50_disp_chan *);
 int nv50_disp_chan_new_(const struct nv50_disp_chan_func *,
 			const struct nv50_disp_chan_mthd *,
 			struct nv50_disp *, int ctrl, int user, int head,
 			const struct nvkm_oclass *, struct nvkm_object **);
+int nv50_disp_dmac_new_(const struct nv50_disp_chan_func *,
+			const struct nv50_disp_chan_mthd *,
+			struct nv50_disp *, int chid, int head, u64 push,
+			const struct nvkm_oclass *, struct nvkm_object **);
 
 extern const struct nv50_disp_chan_func nv50_disp_pioc_func;
-extern const struct nv50_disp_chan_func gf119_disp_pioc_func;
+extern const struct nv50_disp_chan_func nv50_disp_dmac_func;
+int nv50_disp_dmac_bind(struct nv50_disp_chan *, struct nvkm_object *, u32);
+extern const struct nv50_disp_chan_func nv50_disp_core_func;
 
-extern const struct nvkm_event_func nv50_disp_chan_uevent;
-int  nv50_disp_chan_uevent_ctor(struct nvkm_object *, void *, u32,
-				struct nvkm_notify *);
-void nv50_disp_chan_uevent_send(struct nv50_disp *, int);
+extern const struct nv50_disp_chan_func gf119_disp_pioc_func;
+extern const struct nv50_disp_chan_func gf119_disp_dmac_func;
+void gf119_disp_dmac_fini(struct nv50_disp_chan *);
+int gf119_disp_dmac_bind(struct nv50_disp_chan *, struct nvkm_object *, u32);
+extern const struct nv50_disp_chan_func gf119_disp_core_func;
+void gf119_disp_core_fini(struct nv50_disp_chan *);
 
-extern const struct nvkm_event_func gf119_disp_chan_uevent;
+extern const struct nv50_disp_chan_func gp102_disp_dmac_func;
 
 int nv50_disp_curs_new_(const struct nv50_disp_chan_func *,
 			struct nv50_disp *, int ctrl, int user,
@@ -58,17 +59,17 @@ int nv50_disp_oimm_new_(const struct nv50_disp_chan_func *,
 			struct nv50_disp *, int ctrl, int user,
 			const struct nvkm_oclass *, void *argv, u32 argc,
 			struct nvkm_object **);
-int nv50_disp_base_new_(const struct nv50_disp_dmac_func *,
+int nv50_disp_base_new_(const struct nv50_disp_chan_func *,
 			const struct nv50_disp_chan_mthd *,
 			struct nv50_disp *, int chid,
 			const struct nvkm_oclass *, void *argv, u32 argc,
 			struct nvkm_object **);
-int nv50_disp_core_new_(const struct nv50_disp_dmac_func *,
+int nv50_disp_core_new_(const struct nv50_disp_chan_func *,
 			const struct nv50_disp_chan_mthd *,
 			struct nv50_disp *, int chid,
 			const struct nvkm_oclass *oclass, void *argv, u32 argc,
 			struct nvkm_object **);
-int nv50_disp_ovly_new_(const struct nv50_disp_dmac_func *,
+int nv50_disp_ovly_new_(const struct nv50_disp_chan_func *,
 			const struct nv50_disp_chan_mthd *,
 			struct nv50_disp *, int chid,
 			const struct nvkm_oclass *, void *argv, u32 argc,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/coreg84.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/coreg84.c
index b16857f468ee..cfc54aad3e7c 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/coreg84.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/coreg84.c
@@ -21,7 +21,7 @@
  *
  * Authors: Ben Skeggs
  */
-#include "dmacnv50.h"
+#include "channv50.h"
 
 const struct nv50_disp_mthd_list
 g84_disp_core_mthd_dac = {
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/coreg94.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/coreg94.c
index ea5f48912c77..e911925f1182 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/coreg94.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/coreg94.c
@@ -21,7 +21,7 @@
  *
  * Authors: Ben Skeggs
  */
-#include "dmacnv50.h"
+#include "channv50.h"
 
 static const struct nv50_disp_mthd_list
 g94_disp_core_mthd_sor = {
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/coregf119.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/coregf119.c
index 9e48cc3625b5..17c66162417b 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/coregf119.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/coregf119.c
@@ -21,7 +21,7 @@
  *
  * Authors: Ben Skeggs
  */
-#include "dmacnv50.h"
+#include "channv50.h"
 
 #include <subdev/timer.h>
 
@@ -167,10 +167,9 @@ gf119_disp_core_mthd = {
 };
 
 void
-gf119_disp_core_fini(struct nv50_disp_dmac *chan)
+gf119_disp_core_fini(struct nv50_disp_chan *chan)
 {
-	struct nv50_disp *disp = chan->base.disp;
-	struct nvkm_subdev *subdev = &disp->base.engine.subdev;
+	struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev;
 	struct nvkm_device *device = subdev->device;
 
 	/* deactivate channel */
@@ -190,10 +189,9 @@ gf119_disp_core_fini(struct nv50_disp_dmac *chan)
 }
 
 static int
-gf119_disp_core_init(struct nv50_disp_dmac *chan)
+gf119_disp_core_init(struct nv50_disp_chan *chan)
 {
-	struct nv50_disp *disp = chan->base.disp;
-	struct nvkm_subdev *subdev = &disp->base.engine.subdev;
+	struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev;
 	struct nvkm_device *device = subdev->device;
 
 	/* enable error reporting */
@@ -220,7 +218,7 @@ gf119_disp_core_init(struct nv50_disp_dmac *chan)
 	return 0;
 }
 
-const struct nv50_disp_dmac_func
+const struct nv50_disp_chan_func
 gf119_disp_core_func = {
 	.init = gf119_disp_core_init,
 	.fini = gf119_disp_core_fini,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/coregk104.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/coregk104.c
index ca095958efdf..5c800174e079 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/coregk104.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/coregk104.c
@@ -21,7 +21,7 @@
  *
  * Authors: Ben Skeggs
  */
-#include "dmacnv50.h"
+#include "channv50.h"
 
 static const struct nv50_disp_mthd_list
 gk104_disp_core_mthd_head = {
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/coregp102.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/coregp102.c
index 3ec353e90b3e..57d26051bc95 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/coregp102.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/coregp102.c
@@ -21,15 +21,14 @@
  *
  * Authors: Ben Skeggs <bskeggs@redhat.com>
  */
-#include "dmacnv50.h"
+#include "channv50.h"
 
 #include <subdev/timer.h>
 
 static int
-gp102_disp_core_init(struct nv50_disp_dmac *chan)
+gp102_disp_core_init(struct nv50_disp_chan *chan)
 {
-	struct nv50_disp *disp = chan->base.disp;
-	struct nvkm_subdev *subdev = &disp->base.engine.subdev;
+	struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev;
 	struct nvkm_device *device = subdev->device;
 
 	/* enable error reporting */
@@ -56,7 +55,7 @@ gp102_disp_core_init(struct nv50_disp_dmac *chan)
 	return 0;
 }
 
-static const struct nv50_disp_dmac_func
+static const struct nv50_disp_chan_func
 gp102_disp_core_func = {
 	.init = gp102_disp_core_init,
 	.fini = gf119_disp_core_fini,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/corenv50.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/corenv50.c
index 8cdcf5b590e7..d648c4d7b55c 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/corenv50.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/corenv50.c
@@ -21,7 +21,7 @@
  *
  * Authors: Ben Skeggs
  */
-#include "dmacnv50.h"
+#include "channv50.h"
 
 #include <core/client.h>
 #include <subdev/timer.h>
@@ -30,7 +30,7 @@
 #include <nvif/unpack.h>
 
 int
-nv50_disp_core_new_(const struct nv50_disp_dmac_func *func,
+nv50_disp_core_new_(const struct nv50_disp_chan_func *func,
 		    const struct nv50_disp_chan_mthd *mthd,
 		    struct nv50_disp *disp, int chid,
 		    const struct nvkm_oclass *oclass, void *argv, u32 argc,
@@ -164,10 +164,9 @@ nv50_disp_core_mthd = {
 };
 
 static void
-nv50_disp_core_fini(struct nv50_disp_dmac *chan)
+nv50_disp_core_fini(struct nv50_disp_chan *chan)
 {
-	struct nv50_disp *disp = chan->base.disp;
-	struct nvkm_subdev *subdev = &disp->base.engine.subdev;
+	struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev;
 	struct nvkm_device *device = subdev->device;
 
 	/* deactivate channel */
@@ -186,10 +185,9 @@ nv50_disp_core_fini(struct nv50_disp_dmac *chan)
 }
 
 static int
-nv50_disp_core_init(struct nv50_disp_dmac *chan)
+nv50_disp_core_init(struct nv50_disp_chan *chan)
 {
-	struct nv50_disp *disp = chan->base.disp;
-	struct nvkm_subdev *subdev = &disp->base.engine.subdev;
+	struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev;
 	struct nvkm_device *device = subdev->device;
 
 	/* enable error reporting */
@@ -222,7 +220,7 @@ nv50_disp_core_init(struct nv50_disp_dmac *chan)
 	return 0;
 }
 
-const struct nv50_disp_dmac_func
+const struct nv50_disp_chan_func
 nv50_disp_core_func = {
 	.init = nv50_disp_core_init,
 	.fini = nv50_disp_core_fini,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacgf119.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacgf119.c
index b73bcc38a259..f69749a29df8 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacgf119.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacgf119.c
@@ -21,29 +21,27 @@
  *
  * Authors: Ben Skeggs
  */
-#include "dmacnv50.h"
-#include "rootnv50.h"
+#include "channv50.h"
 
 #include <core/ramht.h>
 #include <subdev/timer.h>
 
 int
-gf119_disp_dmac_bind(struct nv50_disp_dmac *chan,
+gf119_disp_dmac_bind(struct nv50_disp_chan *chan,
 		     struct nvkm_object *object, u32 handle)
 {
-	return nvkm_ramht_insert(chan->base.disp->ramht, object,
-				 chan->base.chid.user, -9, handle,
-				 chan->base.chid.user << 27 | 0x00000001);
+	return nvkm_ramht_insert(chan->disp->ramht, object,
+				 chan->chid.user, -9, handle,
+				 chan->chid.user << 27 | 0x00000001);
 }
 
 void
-gf119_disp_dmac_fini(struct nv50_disp_dmac *chan)
+gf119_disp_dmac_fini(struct nv50_disp_chan *chan)
 {
-	struct nv50_disp *disp = chan->base.disp;
-	struct nvkm_subdev *subdev = &disp->base.engine.subdev;
+	struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev;
 	struct nvkm_device *device = subdev->device;
-	int ctrl = chan->base.chid.ctrl;
-	int user = chan->base.chid.user;
+	int ctrl = chan->chid.ctrl;
+	int user = chan->chid.user;
 
 	/* deactivate channel */
 	nvkm_mask(device, 0x610490 + (ctrl * 0x0010), 0x00001010, 0x00001000);
@@ -62,13 +60,12 @@ gf119_disp_dmac_fini(struct nv50_disp_dmac *chan)
 }
 
 static int
-gf119_disp_dmac_init(struct nv50_disp_dmac *chan)
+gf119_disp_dmac_init(struct nv50_disp_chan *chan)
 {
-	struct nv50_disp *disp = chan->base.disp;
-	struct nvkm_subdev *subdev = &disp->base.engine.subdev;
+	struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev;
 	struct nvkm_device *device = subdev->device;
-	int ctrl = chan->base.chid.ctrl;
-	int user = chan->base.chid.user;
+	int ctrl = chan->chid.ctrl;
+	int user = chan->chid.user;
 
 	/* enable error reporting */
 	nvkm_mask(device, 0x6100a0, 0x00000001 << user, 0x00000001 << user);
@@ -94,7 +91,7 @@ gf119_disp_dmac_init(struct nv50_disp_dmac *chan)
 	return 0;
 }
 
-const struct nv50_disp_dmac_func
+const struct nv50_disp_chan_func
 gf119_disp_dmac_func = {
 	.init = gf119_disp_dmac_init,
 	.fini = gf119_disp_dmac_fini,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacgp102.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacgp102.c
index 62e9b8430791..22fa5925644a 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacgp102.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacgp102.c
@@ -21,19 +21,17 @@
  *
  * Authors: Ben Skeggs <bskeggs@redhat.com>
  */
-#include "dmacnv50.h"
-#include "rootnv50.h"
+#include "channv50.h"
 
 #include <subdev/timer.h>
 
 static int
-gp102_disp_dmac_init(struct nv50_disp_dmac *chan)
+gp102_disp_dmac_init(struct nv50_disp_chan *chan)
 {
-	struct nv50_disp *disp = chan->base.disp;
-	struct nvkm_subdev *subdev = &disp->base.engine.subdev;
+	struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev;
 	struct nvkm_device *device = subdev->device;
-	int ctrl = chan->base.chid.ctrl;
-	int user = chan->base.chid.user;
+	int ctrl = chan->chid.ctrl;
+	int user = chan->chid.user;
 
 	/* enable error reporting */
 	nvkm_mask(device, 0x6100a0, 0x00000001 << user, 0x00000001 << user);
@@ -59,7 +57,7 @@ gp102_disp_dmac_init(struct nv50_disp_dmac *chan)
 	return 0;
 }
 
-const struct nv50_disp_dmac_func
+const struct nv50_disp_chan_func
 gp102_disp_dmac_func = {
 	.init = gp102_disp_dmac_init,
 	.fini = gf119_disp_dmac_fini,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacnv50.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacnv50.c
index d081947d0689..5cd08cad2c26 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacnv50.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacnv50.c
@@ -21,117 +21,16 @@
  *
  * Authors: Ben Skeggs
  */
-#include "dmacnv50.h"
-#include "rootnv50.h"
+#include "channv50.h"
 
 #include <core/client.h>
-#include <core/oproxy.h>
 #include <core/ramht.h>
 #include <subdev/fb.h>
 #include <subdev/timer.h>
 #include <engine/dma.h>
 
-struct nv50_disp_dmac_object {
-	struct nvkm_oproxy oproxy;
-	struct nv50_disp *disp;
-	int hash;
-};
-
-static void
-nv50_disp_dmac_child_del_(struct nvkm_oproxy *base)
-{
-	struct nv50_disp_dmac_object *object =
-		container_of(base, typeof(*object), oproxy);
-	nvkm_ramht_remove(object->disp->ramht, object->hash);
-}
-
-static const struct nvkm_oproxy_func
-nv50_disp_dmac_child_func_ = {
-	.dtor[0] = nv50_disp_dmac_child_del_,
-};
-
-static int
-nv50_disp_dmac_child_new_(struct nv50_disp_chan *base,
-			  const struct nvkm_oclass *oclass,
-			  void *data, u32 size, struct nvkm_object **pobject)
-{
-	struct nv50_disp_dmac *chan = nv50_disp_dmac(base);
-	struct nv50_disp *disp = chan->base.disp;
-	struct nvkm_device *device = disp->base.engine.subdev.device;
-	const struct nvkm_device_oclass *sclass = oclass->priv;
-	struct nv50_disp_dmac_object *object;
-	int ret;
-
-	if (!(object = kzalloc(sizeof(*object), GFP_KERNEL)))
-		return -ENOMEM;
-	nvkm_oproxy_ctor(&nv50_disp_dmac_child_func_, oclass, &object->oproxy);
-	object->disp = disp;
-	*pobject = &object->oproxy.base;
-
-	ret = sclass->ctor(device, oclass, data, size, &object->oproxy.object);
-	if (ret)
-		return ret;
-
-	object->hash = chan->func->bind(chan, object->oproxy.object,
-					      oclass->handle);
-	if (object->hash < 0)
-		return object->hash;
-
-	return 0;
-}
-
-static int
-nv50_disp_dmac_child_get_(struct nv50_disp_chan *base, int index,
-			  struct nvkm_oclass *sclass)
-{
-	struct nv50_disp_dmac *chan = nv50_disp_dmac(base);
-	struct nv50_disp *disp = chan->base.disp;
-	struct nvkm_device *device = disp->base.engine.subdev.device;
-	const struct nvkm_device_oclass *oclass = NULL;
-
-	sclass->engine = nvkm_device_engine(device, NVKM_ENGINE_DMAOBJ);
-	if (sclass->engine && sclass->engine->func->base.sclass) {
-		sclass->engine->func->base.sclass(sclass, index, &oclass);
-		if (oclass) {
-			sclass->priv = oclass;
-			return 0;
-		}
-	}
-
-	return -EINVAL;
-}
-
-static void
-nv50_disp_dmac_fini_(struct nv50_disp_chan *base)
-{
-	struct nv50_disp_dmac *chan = nv50_disp_dmac(base);
-	chan->func->fini(chan);
-}
-
-static int
-nv50_disp_dmac_init_(struct nv50_disp_chan *base)
-{
-	struct nv50_disp_dmac *chan = nv50_disp_dmac(base);
-	return chan->func->init(chan);
-}
-
-static void *
-nv50_disp_dmac_dtor_(struct nv50_disp_chan *base)
-{
-	return nv50_disp_dmac(base);
-}
-
-static const struct nv50_disp_chan_func
-nv50_disp_dmac_func_ = {
-	.dtor = nv50_disp_dmac_dtor_,
-	.init = nv50_disp_dmac_init_,
-	.fini = nv50_disp_dmac_fini_,
-	.child_get = nv50_disp_dmac_child_get_,
-	.child_new = nv50_disp_dmac_child_new_,
-};
-
 int
-nv50_disp_dmac_new_(const struct nv50_disp_dmac_func *func,
+nv50_disp_dmac_new_(const struct nv50_disp_chan_func *func,
 		    const struct nv50_disp_chan_mthd *mthd,
 		    struct nv50_disp *disp, int chid, int head, u64 push,
 		    const struct nvkm_oclass *oclass,
@@ -139,16 +38,12 @@ nv50_disp_dmac_new_(const struct nv50_disp_dmac_func *func,
 {
 	struct nvkm_client *client = oclass->client;
 	struct nvkm_dmaobj *dmaobj;
-	struct nv50_disp_dmac *chan;
+	struct nv50_disp_chan *chan;
 	int ret;
 
-	if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
-		return -ENOMEM;
-	*pobject = &chan->base.object;
-	chan->func = func;
-
-	ret = nv50_disp_chan_ctor(&nv50_disp_dmac_func_, mthd, disp,
-				  chid, chid, head, oclass, &chan->base);
+	ret = nv50_disp_chan_new_(func, mthd, disp, chid, chid, head, oclass,
+				  pobject);
+	chan = nv50_disp_chan(*pobject);
 	if (ret)
 		return ret;
 
@@ -174,23 +69,22 @@ nv50_disp_dmac_new_(const struct nv50_disp_dmac_func *func,
 }
 
 int
-nv50_disp_dmac_bind(struct nv50_disp_dmac *chan,
+nv50_disp_dmac_bind(struct nv50_disp_chan *chan,
 		    struct nvkm_object *object, u32 handle)
 {
-	return nvkm_ramht_insert(chan->base.disp->ramht, object,
-				 chan->base.chid.user, -10, handle,
-				 chan->base.chid.user << 28 |
-				 chan->base.chid.user);
+	return nvkm_ramht_insert(chan->disp->ramht, object,
+				 chan->chid.user, -10, handle,
+				 chan->chid.user << 28 |
+				 chan->chid.user);
 }
 
 static void
-nv50_disp_dmac_fini(struct nv50_disp_dmac *chan)
+nv50_disp_dmac_fini(struct nv50_disp_chan *chan)
 {
-	struct nv50_disp *disp = chan->base.disp;
-	struct nvkm_subdev *subdev = &disp->base.engine.subdev;
+	struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev;
 	struct nvkm_device *device = subdev->device;
-	int ctrl = chan->base.chid.ctrl;
-	int user = chan->base.chid.user;
+	int ctrl = chan->chid.ctrl;
+	int user = chan->chid.user;
 
 	/* deactivate channel */
 	nvkm_mask(device, 0x610200 + (ctrl * 0x0010), 0x00001010, 0x00001000);
@@ -208,13 +102,12 @@ nv50_disp_dmac_fini(struct nv50_disp_dmac *chan)
 }
 
 static int
-nv50_disp_dmac_init(struct nv50_disp_dmac *chan)
+nv50_disp_dmac_init(struct nv50_disp_chan *chan)
 {
-	struct nv50_disp *disp = chan->base.disp;
-	struct nvkm_subdev *subdev = &disp->base.engine.subdev;
+	struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev;
 	struct nvkm_device *device = subdev->device;
-	int ctrl = chan->base.chid.ctrl;
-	int user = chan->base.chid.user;
+	int ctrl = chan->chid.ctrl;
+	int user = chan->chid.user;
 
 	/* enable error reporting */
 	nvkm_mask(device, 0x610028, 0x00010000 << user, 0x00010000 << user);
@@ -240,7 +133,7 @@ nv50_disp_dmac_init(struct nv50_disp_dmac *chan)
 	return 0;
 }
 
-const struct nv50_disp_dmac_func
+const struct nv50_disp_chan_func
 nv50_disp_dmac_func = {
 	.init = nv50_disp_dmac_init,
 	.fini = nv50_disp_dmac_fini,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacnv50.h b/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacnv50.h
deleted file mode 100644
index feeb5882dc91..000000000000
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacnv50.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __NV50_DISP_DMAC_H__
-#define __NV50_DISP_DMAC_H__
-#define nv50_disp_dmac(p) container_of((p), struct nv50_disp_dmac, base)
-#include "channv50.h"
-
-struct nv50_disp_dmac {
-	const struct nv50_disp_dmac_func *func;
-	struct nv50_disp_chan base;
-	u32 push;
-};
-
-struct nv50_disp_dmac_func {
-	int  (*init)(struct nv50_disp_dmac *);
-	void (*fini)(struct nv50_disp_dmac *);
-	int  (*bind)(struct nv50_disp_dmac *, struct nvkm_object *, u32 handle);
-};
-
-int nv50_disp_dmac_new_(const struct nv50_disp_dmac_func *,
-			const struct nv50_disp_chan_mthd *,
-			struct nv50_disp *, int chid, int head, u64 push,
-			const struct nvkm_oclass *, struct nvkm_object **);
-
-extern const struct nv50_disp_dmac_func nv50_disp_dmac_func;
-int nv50_disp_dmac_bind(struct nv50_disp_dmac *, struct nvkm_object *, u32);
-extern const struct nv50_disp_dmac_func nv50_disp_core_func;
-
-extern const struct nv50_disp_dmac_func gf119_disp_dmac_func;
-void gf119_disp_dmac_fini(struct nv50_disp_dmac *);
-int gf119_disp_dmac_bind(struct nv50_disp_dmac *, struct nvkm_object *, u32);
-extern const struct nv50_disp_dmac_func gf119_disp_core_func;
-void gf119_disp_core_fini(struct nv50_disp_dmac *);
-
-extern const struct nv50_disp_dmac_func gp102_disp_dmac_func;
-#endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/gf119.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/gf119.c
index 382e6a6a6ff2..794e90982641 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/gf119.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/gf119.c
@@ -24,6 +24,7 @@
 #include "nv50.h"
 #include "head.h"
 #include "ior.h"
+#include "channv50.h"
 #include "rootnv50.h"
 
 #include <core/ramht.h>
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/gp102.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/gp102.c
index 0a2c5b5f87eb..3468ddec1270 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/gp102.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/gp102.c
@@ -24,6 +24,7 @@
 #include "nv50.h"
 #include "head.h"
 #include "ior.h"
+#include "channv50.h"
 #include "rootnv50.h"
 
 static void
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.h b/drivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.h
index bb622d0f6d63..77aa2c8cfcd6 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.h
@@ -79,4 +79,11 @@ void gf119_disp_intr_error(struct nv50_disp *, int);
 void nv50_disp_dptmds_war_2(struct nv50_disp *, struct dcb_output *);
 void nv50_disp_dptmds_war_3(struct nv50_disp *, struct dcb_output *);
 void nv50_disp_update_sppll1(struct nv50_disp *);
+
+extern const struct nvkm_event_func nv50_disp_chan_uevent;
+int  nv50_disp_chan_uevent_ctor(struct nvkm_object *, void *, u32,
+				struct nvkm_notify *);
+void nv50_disp_chan_uevent_send(struct nv50_disp *, int);
+
+extern const struct nvkm_event_func gf119_disp_chan_uevent;
 #endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlyg84.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlyg84.c
index 6b55cf483fe2..31b915d48699 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlyg84.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlyg84.c
@@ -21,7 +21,7 @@
  *
  * Authors: Ben Skeggs
  */
-#include "dmacnv50.h"
+#include "channv50.h"
 
 static const struct nv50_disp_mthd_list
 g84_disp_ovly_mthd_base = {
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlygf119.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlygf119.c
index 30901caf75dc..83fd534c44da 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlygf119.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlygf119.c
@@ -21,7 +21,7 @@
  *
  * Authors: Ben Skeggs
  */
-#include "dmacnv50.h"
+#include "channv50.h"
 
 static const struct nv50_disp_mthd_list
 gf119_disp_ovly_mthd_base = {
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlygk104.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlygk104.c
index 682c146c39d4..a7acacbc92c1 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlygk104.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlygk104.c
@@ -21,7 +21,7 @@
  *
  * Authors: Ben Skeggs
  */
-#include "dmacnv50.h"
+#include "channv50.h"
 
 static const struct nv50_disp_mthd_list
 gk104_disp_ovly_mthd_base = {
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlygp102.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlygp102.c
index bcc5ac40f6f9..e0eca6ea914c 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlygp102.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlygp102.c
@@ -21,7 +21,7 @@
  *
  * Authors: Ben Skeggs
  */
-#include "dmacnv50.h"
+#include "channv50.h"
 
 int
 gp102_disp_ovly_new(const struct nvkm_oclass *oclass, void *argv, u32 argc,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlygt200.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlygt200.c
index 655deb0d2fa0..dc60cd00dc16 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlygt200.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlygt200.c
@@ -21,7 +21,7 @@
  *
  * Authors: Ben Skeggs
  */
-#include "dmacnv50.h"
+#include "channv50.h"
 
 static const struct nv50_disp_mthd_list
 gt200_disp_ovly_mthd_base = {
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlynv50.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlynv50.c
index 46f5df0b3a1e..6974c12c4518 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlynv50.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/ovlynv50.c
@@ -21,7 +21,7 @@
  *
  * Authors: Ben Skeggs
  */
-#include "dmacnv50.h"
+#include "channv50.h"
 #include "head.h"
 
 #include <core/client.h>
@@ -30,7 +30,7 @@
 #include <nvif/unpack.h>
 
 int
-nv50_disp_ovly_new_(const struct nv50_disp_dmac_func *func,
+nv50_disp_ovly_new_(const struct nv50_disp_chan_func *func,
 		    const struct nv50_disp_chan_mthd *mthd,
 		    struct nv50_disp *disp, int chid,
 		    const struct nvkm_oclass *oclass, void *argv, u32 argc,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootg84.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootg84.c
index e51f89f32507..1ed371fd7ddf 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootg84.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootg84.c
@@ -22,7 +22,7 @@
  * Authors: Ben Skeggs
  */
 #include "rootnv50.h"
-#include "dmacnv50.h"
+#include "channv50.h"
 
 #include <nvif/class.h>
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootg94.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootg94.c
index ed7838eedb2c..ef579eb00238 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootg94.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootg94.c
@@ -22,7 +22,7 @@
  * Authors: Ben Skeggs
  */
 #include "rootnv50.h"
-#include "dmacnv50.h"
+#include "channv50.h"
 
 #include <nvif/class.h>
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgf119.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgf119.c
index ac92e65131c9..fe011165dc02 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgf119.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgf119.c
@@ -22,7 +22,7 @@
  * Authors: Ben Skeggs
  */
 #include "rootnv50.h"
-#include "dmacnv50.h"
+#include "channv50.h"
 
 #include <nvif/class.h>
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgk104.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgk104.c
index 3bb6d601aed2..9e8ffd348b50 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgk104.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgk104.c
@@ -22,7 +22,7 @@
  * Authors: Ben Skeggs
  */
 #include "rootnv50.h"
-#include "dmacnv50.h"
+#include "channv50.h"
 
 #include <nvif/class.h>
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgk110.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgk110.c
index 336419815d98..dc85cc1c9490 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgk110.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgk110.c
@@ -22,7 +22,7 @@
  * Authors: Ben Skeggs
  */
 #include "rootnv50.h"
-#include "dmacnv50.h"
+#include "channv50.h"
 
 #include <nvif/class.h>
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgm107.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgm107.c
index c53e71ee69e7..e0181ca08840 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgm107.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgm107.c
@@ -22,7 +22,7 @@
  * Authors: Ben Skeggs
  */
 #include "rootnv50.h"
-#include "dmacnv50.h"
+#include "channv50.h"
 
 #include <nvif/class.h>
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgm200.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgm200.c
index 85409d1bc7bc..e5e590e19f62 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgm200.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgm200.c
@@ -22,7 +22,7 @@
  * Authors: Ben Skeggs
  */
 #include "rootnv50.h"
-#include "dmacnv50.h"
+#include "channv50.h"
 
 #include <nvif/class.h>
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgp100.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgp100.c
index ebfd245c573a..762a1a922e05 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgp100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgp100.c
@@ -22,7 +22,7 @@
  * Authors: Ben Skeggs <bskeggs@redhat.com>
  */
 #include "rootnv50.h"
-#include "dmacnv50.h"
+#include "channv50.h"
 
 #include <nvif/class.h>
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgp102.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgp102.c
index 54b5fda99208..c7f00946c9af 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgp102.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgp102.c
@@ -22,7 +22,7 @@
  * Authors: Ben Skeggs <bskeggs@redhat.com>
  */
 #include "rootnv50.h"
-#include "dmacnv50.h"
+#include "channv50.h"
 
 #include <nvif/class.h>
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgt200.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgt200.c
index 14ac83bf3693..a6963654087c 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgt200.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgt200.c
@@ -22,7 +22,7 @@
  * Authors: Ben Skeggs
  */
 #include "rootnv50.h"
-#include "dmacnv50.h"
+#include "channv50.h"
 
 #include <nvif/class.h>
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgt215.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgt215.c
index cb1a208e68bd..4fe0a3ae8891 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgt215.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgt215.c
@@ -22,7 +22,7 @@
  * Authors: Ben Skeggs
  */
 #include "rootnv50.h"
-#include "dmacnv50.h"
+#include "channv50.h"
 
 #include <nvif/class.h>
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv50.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv50.c
index 9d716ee7621e..3aa5a2879239 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv50.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv50.c
@@ -22,7 +22,7 @@
  * Authors: Ben Skeggs
  */
 #include "rootnv50.h"
-#include "dmacnv50.h"
+#include "channv50.h"
 #include "dp.h"
 #include "head.h"
 #include "ior.h"
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv50.h b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv50.h
index 12fc13b397ed..9983a424d30d 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv50.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv50.h
@@ -2,8 +2,8 @@
 #ifndef __NV50_DISP_ROOT_H__
 #define __NV50_DISP_ROOT_H__
 #define nv50_disp_root(p) container_of((p), struct nv50_disp_root, object)
+#include <core/object.h>
 #include "nv50.h"
-#include "dmacnv50.h"
 
 struct nv50_disp_root {
 	const struct nv50_disp_root_func *func;
-- 
2.45.2