drm/nouveau/sw: convert user classes to new-style nvkm_object

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

12 files changed, 277 insertions, 229 deletions

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/engine/sw.h b/drivers/gpu/drm/nouveau/include/nvkm/engine/sw.h
index f5857a6404d35..f2288d468cb6b 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/engine/sw.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/engine/sw.h
@@ -4,6 +4,7 @@
 
 struct nvkm_sw {
 	struct nvkm_engine engine;
+	const struct nvkm_sw_func *func;
 	struct list_head chan;
 };
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/sw/base.c b/drivers/gpu/drm/nouveau/nvkm/engine/sw/base.c
index 1d68ae68884a3..efc18787490c2 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/sw/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/sw/base.c
@@ -46,6 +46,48 @@ nvkm_sw_mthd(struct nvkm_sw *sw, int chid, int subc, u32 mthd, u32 data)
 	return handled;
 }
 
+static int
+nvkm_sw_oclass_new(const struct nvkm_oclass *oclass, void *data, u32 size,
+		   struct nvkm_object **pobject)
+{
+	struct nvkm_sw_chan *chan = nvkm_sw_chan(oclass->parent);
+	const struct nvkm_sw_chan_sclass *sclass = oclass->engn;
+	return sclass->ctor(chan, oclass, data, size, pobject);
+}
+
+static int
+nvkm_sw_oclass_get(struct nvkm_oclass *oclass, int index)
+{
+	struct nvkm_sw *sw = nvkm_sw(oclass->engine);
+	int c = 0;
+
+	while (sw->func->sclass[c].ctor) {
+		if (c++ == index) {
+			oclass->engn = &sw->func->sclass[index];
+			oclass->base =  sw->func->sclass[index].base;
+			oclass->base.ctor = nvkm_sw_oclass_new;
+			return index;
+		}
+	}
+
+	return c;
+}
+
+static int
+nvkm_sw_cclass_get(struct nvkm_fifo_chan *fifoch,
+		   const struct nvkm_oclass *oclass,
+		   struct nvkm_object **pobject)
+{
+	struct nvkm_sw *sw = nvkm_sw(oclass->engine);
+	return sw->func->chan_new(sw, fifoch, oclass, pobject);
+}
+
+static const struct nvkm_engine_func
+nvkm_sw = {
+	.fifo.cclass = nvkm_sw_cclass_get,
+	.fifo.sclass = nvkm_sw_oclass_get,
+};
+
 int
 nvkm_sw_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
 	     struct nvkm_oclass *oclass, int length, void **pobject)
@@ -59,6 +101,7 @@ nvkm_sw_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
 	if (ret)
 		return ret;
 
+	sw->engine.func = &nvkm_sw;
 	INIT_LIST_HEAD(&sw->chan);
 	return 0;
 }
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.c b/drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.c
index 904405a8f5c6b..d082f4f73a80c 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.c
@@ -69,33 +69,43 @@ nvkm_sw_chan_event = {
 	.ctor = nvkm_sw_chan_event_ctor,
 };
 
-void
-nvkm_sw_chan_dtor(struct nvkm_object *base)
+static void *
+nvkm_sw_chan_dtor(struct nvkm_object *object)
 {
-	struct nvkm_sw_chan *chan = (void *)base;
-	list_del(&chan->head);
+	struct nvkm_sw_chan *chan = nvkm_sw_chan(object);
+	struct nvkm_sw *sw = chan->sw;
+	unsigned long flags;
+	void *data = chan;
+
+	if (chan->func->dtor)
+		data = chan->func->dtor(chan);
 	nvkm_event_fini(&chan->event);
-	nvkm_engctx_destroy(&chan->base);
+
+	spin_lock_irqsave(&sw->engine.lock, flags);
+	list_del(&chan->head);
+	spin_unlock_irqrestore(&sw->engine.lock, flags);
+	return data;
 }
 
+static const struct nvkm_object_func
+nvkm_sw_chan = {
+	.dtor = nvkm_sw_chan_dtor,
+};
+
 int
-nvkm_sw_chan_ctor(const struct nvkm_sw_chan_func *func,
-		  struct nvkm_object *parent, struct nvkm_object *engine,
-		  struct nvkm_oclass *oclass, int length, void **pobject)
+nvkm_sw_chan_ctor(const struct nvkm_sw_chan_func *func, struct nvkm_sw *sw,
+		  struct nvkm_fifo_chan *fifo, const struct nvkm_oclass *oclass,
+		  struct nvkm_sw_chan *chan)
 {
-	struct nvkm_sw *sw = (void *)engine;
-	struct nvkm_sw_chan *chan;
-	int ret;
-
-	ret = nvkm_engctx_create_(parent, engine, oclass, parent,
-				  0, 0, 0, length, pobject);
-	chan = *pobject;
-	if (ret)
-		return ret;
+	unsigned long flags;
 
+	nvkm_object_ctor(&nvkm_sw_chan, oclass, &chan->object);
 	chan->func = func;
-	chan->fifo = nvkm_fifo_chan(parent);
+	chan->sw = sw;
+	chan->fifo = fifo;
+	spin_lock_irqsave(&sw->engine.lock, flags);
 	list_add(&chan->head, &sw->chan);
+	spin_unlock_irqrestore(&sw->engine.lock, flags);
 
 	return nvkm_event_init(&nvkm_sw_chan_event, 1, 1, &chan->event);
 }
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.h b/drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.h
index edebd9c30c0c4..6608bf6c68421 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.h
@@ -1,35 +1,26 @@
 #ifndef __NVKM_SW_CHAN_H__
 #define __NVKM_SW_CHAN_H__
+#define nvkm_sw_chan(p) container_of((p), struct nvkm_sw_chan, object)
 #include "priv.h"
-#include <core/engctx.h>
 #include <core/event.h>
 
 struct nvkm_sw_chan {
-	struct nvkm_engctx base;
 	const struct nvkm_sw_chan_func *func;
+	struct nvkm_object object;
+	struct nvkm_sw *sw;
 	struct nvkm_fifo_chan *fifo;
 	struct list_head head;
+
 	struct nvkm_event event;
 };
 
 struct nvkm_sw_chan_func {
+	void *(*dtor)(struct nvkm_sw_chan *);
 	bool (*mthd)(struct nvkm_sw_chan *, int subc, u32 mthd, u32 data);
 };
 
+int nvkm_sw_chan_ctor(const struct nvkm_sw_chan_func *, struct nvkm_sw *,
+		      struct nvkm_fifo_chan *, const struct nvkm_oclass *,
+		      struct nvkm_sw_chan *);
 bool nvkm_sw_chan_mthd(struct nvkm_sw_chan *, int subc, u32 mthd, u32 data);
-
-#define nvkm_sw_context_create(f,p,e,c,d)                               \
-	nvkm_sw_chan_ctor((f), (p), (e), (c), sizeof(**d), (void **)d)
-int nvkm_sw_chan_ctor(const struct nvkm_sw_chan_func *,
-		      struct nvkm_object *, struct nvkm_object *,
-		      struct nvkm_oclass *, int, void **);
-void nvkm_sw_chan_dtor(struct nvkm_object *);
-#define nvkm_sw_context_init(d)                                       \
-	nvkm_engctx_init(&(d)->base)
-#define nvkm_sw_context_fini(d,s)                                     \
-	nvkm_engctx_fini(&(d)->base, (s))
-
-#define _nvkm_sw_context_dtor nvkm_sw_chan_dtor
-#define _nvkm_sw_context_init _nvkm_engctx_init
-#define _nvkm_sw_context_fini _nvkm_engctx_fini
 #endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/sw/gf100.c b/drivers/gpu/drm/nouveau/nvkm/engine/sw/gf100.c
index ac106c6c25d07..8920f367c1f8e 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/sw/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/sw/gf100.c
@@ -25,33 +25,26 @@
 
 #include <subdev/bar.h>
 #include <engine/disp.h>
+#include <engine/fifo.h>
 
+#include <nvif/event.h>
 #include <nvif/ioctl.h>
 
 /*******************************************************************************
- * software object classes
- ******************************************************************************/
-
-static struct nvkm_oclass
-gf100_sw_sclass[] = {
-	{ NVIF_IOCTL_NEW_V0_SW_GF100, &nvkm_nvsw_ofuncs },
-	{}
-};
-
-/*******************************************************************************
  * software context
  ******************************************************************************/
 
 static int
-gf100_sw_vblsem_release(struct nvkm_notify *notify)
+gf100_sw_chan_vblsem_release(struct nvkm_notify *notify)
 {
 	struct nv50_sw_chan *chan =
 		container_of(notify, typeof(*chan), vblank.notify[notify->index]);
-	struct nvkm_sw *sw = (void *)nv_object(chan)->engine;
+	struct nvkm_sw *sw = chan->base.sw;
 	struct nvkm_device *device = sw->engine.subdev.device;
 	struct nvkm_bar *bar = device->bar;
+	u32 inst = chan->base.fifo->inst->addr >> 12;
 
-	nvkm_wr32(device, 0x001718, 0x80000000 | chan->vblank.channel);
+	nvkm_wr32(device, 0x001718, 0x80000000 | inst);
 	bar->flush(bar);
 	nvkm_wr32(device, 0x06000c, upper_32_bits(chan->vblank.offset));
 	nvkm_wr32(device, 0x060010, lower_32_bits(chan->vblank.offset));
@@ -64,7 +57,7 @@ static bool
 gf100_sw_chan_mthd(struct nvkm_sw_chan *base, int subc, u32 mthd, u32 data)
 {
 	struct nv50_sw_chan *chan = nv50_sw_chan(base);
-	struct nvkm_engine *engine = chan->base.base.gpuobj.object.engine;
+	struct nvkm_engine *engine = chan->base.object.engine;
 	struct nvkm_device *device = engine->subdev.device;
 	switch (mthd) {
 	case 0x0400:
@@ -103,27 +96,58 @@ gf100_sw_chan_mthd(struct nvkm_sw_chan *base, int subc, u32 mthd, u32 data)
 }
 
 static const struct nvkm_sw_chan_func
-gf100_sw_chan_func = {
+gf100_sw_chan = {
+	.dtor = nv50_sw_chan_dtor,
 	.mthd = gf100_sw_chan_mthd,
 };
 
-static struct nv50_sw_cclass
-gf100_sw_cclass = {
-	.base.handle = NV_ENGCTX(SW, 0xc0),
-	.base.ofuncs = &(struct nvkm_ofuncs) {
-		.ctor = nv50_sw_context_ctor,
-		.dtor = nv50_sw_context_dtor,
-		.init = _nvkm_sw_context_init,
-		.fini = _nvkm_sw_context_fini,
-	},
-	.vblank = gf100_sw_vblsem_release,
-	.chan = &gf100_sw_chan_func,
-};
+static int
+gf100_sw_chan_new(struct nvkm_sw *sw, struct nvkm_fifo_chan *fifoch,
+		  const struct nvkm_oclass *oclass,
+		  struct nvkm_object **pobject)
+{
+	struct nvkm_disp *disp = sw->engine.subdev.device->disp;
+	struct nv50_sw_chan *chan;
+	int ret, i;
+
+	if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
+		return -ENOMEM;
+	*pobject = &chan->base.object;
+
+	ret = nvkm_sw_chan_ctor(&gf100_sw_chan, sw, fifoch, oclass,
+				&chan->base);
+	if (ret)
+		return ret;
+
+	for (i = 0; disp && i < disp->vblank.index_nr; i++) {
+		ret = nvkm_notify_init(NULL, &disp->vblank,
+				       gf100_sw_chan_vblsem_release, false,
+				       &(struct nvif_notify_head_req_v0) {
+					.head = i,
+				       },
+				       sizeof(struct nvif_notify_head_req_v0),
+				       sizeof(struct nvif_notify_head_rep_v0),
+				       &chan->vblank.notify[i]);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
 
 /*******************************************************************************
  * software engine/subdev functions
  ******************************************************************************/
 
+static const struct nvkm_sw_func
+gf100_sw_func = {
+	.chan_new = gf100_sw_chan_new,
+	.sclass = {
+		{ nvkm_nvsw_new, { -1, -1, NVIF_IOCTL_NEW_V0_SW_GF100 } },
+		{}
+	}
+};
+
 struct nvkm_oclass *
 gf100_sw_oclass = &(struct nv50_sw_oclass) {
 	.base.handle = NV_ENGINE(SW, 0xc0),
@@ -133,6 +157,5 @@ gf100_sw_oclass = &(struct nv50_sw_oclass) {
 		.init = _nvkm_sw_init,
 		.fini = _nvkm_sw_fini,
 	},
-	.cclass = &gf100_sw_cclass.base,
-	.sclass =  gf100_sw_sclass,
+	.func = &gf100_sw_func,
 }.base;
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv04.c b/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv04.c
index 6958cba393daa..d8d9d48b66d28 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv04.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv04.c
@@ -40,9 +40,9 @@ struct nv04_sw_chan {
  ******************************************************************************/
 
 static int
-nv04_sw_mthd_get_ref(struct nvkm_object *object, void *data, u32 size)
+nv04_nvsw_mthd_get_ref(struct nvkm_nvsw *nvsw, void *data, u32 size)
 {
-	struct nv04_sw_chan *chan = (void *)object->parent;
+	struct nv04_sw_chan *chan = nv04_sw_chan(nvsw->chan);
 	union {
 		struct nv04_nvsw_get_ref_v0 v0;
 	} *args = data;
@@ -56,31 +56,28 @@ nv04_sw_mthd_get_ref(struct nvkm_object *object, void *data, u32 size)
 }
 
 static int
-nv04_sw_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
+nv04_nvsw_mthd(struct nvkm_nvsw *nvsw, u32 mthd, void *data, u32 size)
 {
 	switch (mthd) {
 	case NV04_NVSW_GET_REF:
-		return nv04_sw_mthd_get_ref(object, data, size);
+		return nv04_nvsw_mthd_get_ref(nvsw, data, size);
 	default:
 		break;
 	}
 	return -EINVAL;
 }
 
-static struct nvkm_ofuncs
-nv04_sw_ofuncs = {
-	.ctor = nvkm_nvsw_ctor,
-	.dtor = nvkm_object_destroy,
-	.init = _nvkm_object_init,
-	.fini = _nvkm_object_fini,
-	.mthd = nv04_sw_mthd,
+static const struct nvkm_nvsw_func
+nv04_nvsw = {
+	.mthd = nv04_nvsw_mthd,
 };
 
-static struct nvkm_oclass
-nv04_sw_sclass[] = {
-	{ NVIF_IOCTL_NEW_V0_SW_NV04, &nv04_sw_ofuncs },
-	{}
-};
+static int
+nv04_nvsw_new(struct nvkm_sw_chan *chan, const struct nvkm_oclass *oclass,
+	      void *data, u32 size, struct nvkm_object **pobject)
+{
+	return nvkm_nvsw_new_(&nv04_nvsw, chan, oclass, data, size, pobject);
+}
 
 /*******************************************************************************
  * software context
@@ -103,38 +100,23 @@ nv04_sw_chan_mthd(struct nvkm_sw_chan *base, int subc, u32 mthd, u32 data)
 }
 
 static const struct nvkm_sw_chan_func
-nv04_sw_chan_func = {
+nv04_sw_chan = {
 	.mthd = nv04_sw_chan_mthd,
 };
 
 static int
-nv04_sw_context_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
-		     struct nvkm_oclass *oclass, void *data, u32 size,
-		     struct nvkm_object **pobject)
+nv04_sw_chan_new(struct nvkm_sw *sw, struct nvkm_fifo_chan *fifo,
+		 const struct nvkm_oclass *oclass, struct nvkm_object **pobject)
 {
 	struct nv04_sw_chan *chan;
-	int ret;
-
-	ret = nvkm_sw_context_create(&nv04_sw_chan_func,
-				     parent, engine, oclass, &chan);
-	*pobject = nv_object(chan);
-	if (ret)
-		return ret;
 
+	if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
+		return -ENOMEM;
 	atomic_set(&chan->ref, 0);
-	return 0;
-}
+	*pobject = &chan->base.object;
 
-static struct nvkm_oclass
-nv04_sw_cclass = {
-	.handle = NV_ENGCTX(SW, 0x04),
-	.ofuncs = &(struct nvkm_ofuncs) {
-		.ctor = nv04_sw_context_ctor,
-		.dtor = _nvkm_sw_context_dtor,
-		.init = _nvkm_sw_context_init,
-		.fini = _nvkm_sw_context_fini,
-	},
-};
+	return nvkm_sw_chan_ctor(&nv04_sw_chan, sw, fifo, oclass, &chan->base);
+}
 
 /*******************************************************************************
  * software engine/subdev functions
@@ -146,6 +128,15 @@ nv04_sw_intr(struct nvkm_subdev *subdev)
 	nvkm_mask(subdev->device, 0x000100, 0x80000000, 0x00000000);
 }
 
+static const struct nvkm_sw_func
+nv04_sw = {
+	.chan_new = nv04_sw_chan_new,
+	.sclass = {
+		{ nv04_nvsw_new, { -1, -1, NVIF_IOCTL_NEW_V0_SW_NV04 } },
+		{}
+	}
+};
+
 static int
 nv04_sw_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
 	     struct nvkm_oclass *oclass, void *data, u32 size,
@@ -159,8 +150,7 @@ nv04_sw_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
 	if (ret)
 		return ret;
 
-	nv_engine(sw)->cclass = &nv04_sw_cclass;
-	nv_engine(sw)->sclass = nv04_sw_sclass;
+	sw->func = &nv04_sw;
 	nv_subdev(sw)->intr = nv04_sw_intr;
 	return 0;
 }
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv10.c b/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv10.c
index ecaeeaa8edc7c..1b9fc1b1f69e7 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv10.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv10.c
@@ -28,55 +28,39 @@
 #include <nvif/ioctl.h>
 
 /*******************************************************************************
- * software object classes
- ******************************************************************************/
-
-static struct nvkm_oclass
-nv10_sw_sclass[] = {
-	{ NVIF_IOCTL_NEW_V0_SW_NV10, &nvkm_nvsw_ofuncs },
-	{}
-};
-
-/*******************************************************************************
  * software context
  ******************************************************************************/
 
 static const struct nvkm_sw_chan_func
-nv10_sw_chan_func = {
+nv10_sw_chan = {
 };
 
 static int
-nv10_sw_context_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
-		     struct nvkm_oclass *oclass, void *data, u32 size,
-		     struct nvkm_object **pobject)
+nv10_sw_chan_new(struct nvkm_sw *sw, struct nvkm_fifo_chan *fifo,
+		 const struct nvkm_oclass *oclass, struct nvkm_object **pobject)
 {
 	struct nvkm_sw_chan *chan;
-	int ret;
 
-	ret = nvkm_sw_context_create(&nv10_sw_chan_func,
-				     parent, engine, oclass, &chan);
-	*pobject = nv_object(chan);
-	if (ret)
-		return ret;
+	if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
+		return -ENOMEM;
+	*pobject = &chan->object;
 
-	return 0;
+	return nvkm_sw_chan_ctor(&nv10_sw_chan, sw, fifo, oclass, chan);
 }
 
-static struct nvkm_oclass
-nv10_sw_cclass = {
-	.handle = NV_ENGCTX(SW, 0x04),
-	.ofuncs = &(struct nvkm_ofuncs) {
-		.ctor = nv10_sw_context_ctor,
-		.dtor = _nvkm_sw_context_dtor,
-		.init = _nvkm_sw_context_init,
-		.fini = _nvkm_sw_context_fini,
-	},
-};
-
 /*******************************************************************************
  * software engine/subdev functions
  ******************************************************************************/
 
+static const struct nvkm_sw_func
+nv10_sw = {
+	.chan_new = nv10_sw_chan_new,
+	.sclass = {
+		{ nvkm_nvsw_new, { -1, -1, NVIF_IOCTL_NEW_V0_SW_NV10 } },
+		{}
+	}
+};
+
 static int
 nv10_sw_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
 	     struct nvkm_oclass *oclass, void *data, u32 size,
@@ -90,8 +74,7 @@ nv10_sw_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
 	if (ret)
 		return ret;
 
-	nv_engine(sw)->cclass = &nv10_sw_cclass;
-	nv_engine(sw)->sclass = nv10_sw_sclass;
+	sw->func = &nv10_sw;
 	nv_subdev(sw)->intr = nv04_sw_intr;
 	return 0;
 }
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv50.c b/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv50.c
index 35ec1cffb53a2..451f758f5ebfd 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv50.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv50.c
@@ -32,29 +32,19 @@
 #include <nvif/ioctl.h>
 
 /*******************************************************************************
- * software object classes
- ******************************************************************************/
-
-static struct nvkm_oclass
-nv50_sw_sclass[] = {
-	{ NVIF_IOCTL_NEW_V0_SW_NV50, &nvkm_nvsw_ofuncs },
-	{}
-};
-
-/*******************************************************************************
  * software context
  ******************************************************************************/
 
 static int
-nv50_sw_vblsem_release(struct nvkm_notify *notify)
+nv50_sw_chan_vblsem_release(struct nvkm_notify *notify)
 {
 	struct nv50_sw_chan *chan =
 		container_of(notify, typeof(*chan), vblank.notify[notify->index]);
-	struct nvkm_sw *sw = (void *)nv_object(chan)->engine;
+	struct nvkm_sw *sw = chan->base.sw;
 	struct nvkm_device *device = sw->engine.subdev.device;
 	struct nvkm_bar *bar = device->bar;
 
-	nvkm_wr32(device, 0x001704, chan->vblank.channel);
+	nvkm_wr32(device, 0x001704, chan->base.fifo->inst->addr >> 12);
 	nvkm_wr32(device, 0x001710, 0x80000000 | chan->vblank.ctxdma);
 	bar->flush(bar);
 
@@ -73,7 +63,7 @@ static bool
 nv50_sw_chan_mthd(struct nvkm_sw_chan *base, int subc, u32 mthd, u32 data)
 {
 	struct nv50_sw_chan *chan = nv50_sw_chan(base);
-	struct nvkm_engine *engine = chan->base.base.gpuobj.object.engine;
+	struct nvkm_engine *engine = chan->base.object.engine;
 	struct nvkm_device *device = engine->subdev.device;
 	switch (mthd) {
 	case 0x018c: chan->vblank.ctxdma = data; return true;
@@ -91,41 +81,41 @@ nv50_sw_chan_mthd(struct nvkm_sw_chan *base, int subc, u32 mthd, u32 data)
 	return false;
 }
 
-static const struct nvkm_sw_chan_func
-nv50_sw_chan_func = {
-	.mthd = nv50_sw_chan_mthd,
-};
-
-void
-nv50_sw_context_dtor(struct nvkm_object *object)
+void *
+nv50_sw_chan_dtor(struct nvkm_sw_chan *base)
 {
-	struct nv50_sw_chan *chan = (void *)object;
+	struct nv50_sw_chan *chan = nv50_sw_chan(base);
 	int i;
-
 	for (i = 0; i < ARRAY_SIZE(chan->vblank.notify); i++)
 		nvkm_notify_fini(&chan->vblank.notify[i]);
-
-	nvkm_sw_chan_dtor(&chan->base.base.gpuobj.object);
+	return chan;
 }
 
-int
-nv50_sw_context_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
-		     struct nvkm_oclass *oclass, void *data, u32 size,
-		     struct nvkm_object **pobject)
+static const struct nvkm_sw_chan_func
+nv50_sw_chan = {
+	.dtor = nv50_sw_chan_dtor,
+	.mthd = nv50_sw_chan_mthd,
+};
+
+static int
+nv50_sw_chan_new(struct nvkm_sw *sw, struct nvkm_fifo_chan *fifoch,
+		 const struct nvkm_oclass *oclass, struct nvkm_object **pobject)
 {
-	struct nvkm_disp *disp = parent->engine->subdev.device->disp;
-	struct nv50_sw_cclass *pclass = (void *)oclass;
+	struct nvkm_disp *disp = sw->engine.subdev.device->disp;
 	struct nv50_sw_chan *chan;
 	int ret, i;
 
-	ret = nvkm_sw_context_create(pclass->chan, parent, engine, oclass, &chan);
-	*pobject = nv_object(chan);
+	if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
+		return -ENOMEM;
+	*pobject = &chan->base.object;
+
+	ret = nvkm_sw_chan_ctor(&nv50_sw_chan, sw, fifoch, oclass, &chan->base);
 	if (ret)
 		return ret;
 
 	for (i = 0; disp && i < disp->vblank.index_nr; i++) {
-		ret = nvkm_notify_init(NULL, &disp->vblank, pclass->vblank,
-				       false,
+		ret = nvkm_notify_init(NULL, &disp->vblank,
+				       nv50_sw_chan_vblsem_release, false,
 				       &(struct nvif_notify_head_req_v0) {
 					.head = i,
 				       },
@@ -136,23 +126,9 @@ nv50_sw_context_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
 			return ret;
 	}
 
-	chan->vblank.channel = nvkm_fifo_chan(parent)->inst->addr >> 12;
 	return 0;
 }
 
-static struct nv50_sw_cclass
-nv50_sw_cclass = {
-	.base.handle = NV_ENGCTX(SW, 0x50),
-	.base.ofuncs = &(struct nvkm_ofuncs) {
-		.ctor = nv50_sw_context_ctor,
-		.dtor = nv50_sw_context_dtor,
-		.init = _nvkm_sw_context_init,
-		.fini = _nvkm_sw_context_fini,
-	},
-	.vblank = nv50_sw_vblsem_release,
-	.chan = &nv50_sw_chan_func,
-};
-
 /*******************************************************************************
  * software engine/subdev functions
  ******************************************************************************/
@@ -171,12 +147,20 @@ nv50_sw_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
 	if (ret)
 		return ret;
 
-	nv_engine(sw)->cclass = pclass->cclass;
-	nv_engine(sw)->sclass = pclass->sclass;
+	sw->func = pclass->func;
 	nv_subdev(sw)->intr = nv04_sw_intr;
 	return 0;
 }
 
+static const struct nvkm_sw_func
+nv50_sw_func = {
+	.chan_new = nv50_sw_chan_new,
+	.sclass = {
+		{ nvkm_nvsw_new, { -1, -1, NVIF_IOCTL_NEW_V0_SW_NV50 } },
+		{}
+	}
+};
+
 struct nvkm_oclass *
 nv50_sw_oclass = &(struct nv50_sw_oclass) {
 	.base.handle = NV_ENGINE(SW, 0x50),
@@ -186,6 +170,5 @@ nv50_sw_oclass = &(struct nv50_sw_oclass) {
 		.init = _nvkm_sw_init,
 		.fini = _nvkm_sw_fini,
 	},
-	.cclass = &nv50_sw_cclass.base,
-	.sclass =  nv50_sw_sclass,
+	.func = &nv50_sw_func,
 }.base;
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv50.h b/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv50.h
index 534c21079b81a..c90a470564e26 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv50.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv50.h
@@ -8,8 +8,7 @@
 
 struct nv50_sw_oclass {
 	struct nvkm_oclass base;
-	struct nvkm_oclass *cclass;
-	struct nvkm_oclass *sclass;
+	const struct nvkm_sw_func *func;
 };
 
 int  nv50_sw_ctor(struct nvkm_object *, struct nvkm_object *,
@@ -26,20 +25,11 @@ struct nv50_sw_chan {
 	struct nvkm_sw_chan base;
 	struct {
 		struct nvkm_notify notify[4];
-		u32 channel;
 		u32 ctxdma;
 		u64 offset;
 		u32 value;
 	} vblank;
 };
 
-int  nv50_sw_context_ctor(struct nvkm_object *,
-				struct nvkm_object *,
-				struct nvkm_oclass *, void *, u32,
-				struct nvkm_object **);
-void nv50_sw_context_dtor(struct nvkm_object *);
-
-int nv50_sw_mthd_vblsem_value(struct nvkm_object *, u32, void *, u32);
-int nv50_sw_mthd_vblsem_release(struct nvkm_object *, u32, void *, u32);
-int nv50_sw_mthd_flip(struct nvkm_object *, u32, void *, u32);
+void *nv50_sw_chan_dtor(struct nvkm_sw_chan *);
 #endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/sw/nvsw.c b/drivers/gpu/drm/nouveau/nvkm/engine/sw/nvsw.c
index c3c6829fd0010..6652a9196753c 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/sw/nvsw.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/sw/nvsw.c
@@ -21,19 +21,22 @@
  *
  * Authors: Ben Skeggs <bskeggs@redhat.com>
  */
-#define nvkm_nvsw(p) container_of((p), struct nvkm_nvsw, object)
 #include "nvsw.h"
 #include "chan.h"
 
 #include <nvif/class.h>
 
-struct nvkm_nvsw {
-	struct nvkm_object object;
-	struct nvkm_sw_chan *chan;
-};
+static int
+nvkm_nvsw_mthd_(struct nvkm_object *base, u32 mthd, void *data, u32 size)
+{
+	struct nvkm_nvsw *nvsw = nvkm_nvsw(base);
+	if (nvsw->func->mthd)
+		return nvsw->func->mthd(nvsw, mthd, data, size);
+	return -ENODEV;
+}
 
 static int
-nvkm_nvsw_ntfy(struct nvkm_object *base, u32 mthd, struct nvkm_event **pevent)
+nvkm_nvsw_ntfy_(struct nvkm_object *base, u32 mthd, struct nvkm_event **pevent)
 {
 	struct nvkm_nvsw *nvsw = nvkm_nvsw(base);
 	switch (mthd) {
@@ -46,29 +49,36 @@ nvkm_nvsw_ntfy(struct nvkm_object *base, u32 mthd, struct nvkm_event **pevent)
 	return -EINVAL;
 }
 
+static const struct nvkm_object_func
+nvkm_nvsw_ = {
+	.mthd = nvkm_nvsw_mthd_,
+	.ntfy = nvkm_nvsw_ntfy_,
+};
+
 int
-nvkm_nvsw_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
-	       struct nvkm_oclass *oclass, void *data, u32 size,
+nvkm_nvsw_new_(const struct nvkm_nvsw_func *func, struct nvkm_sw_chan *chan,
+	       const struct nvkm_oclass *oclass, void *data, u32 size,
 	       struct nvkm_object **pobject)
 {
-	struct nvkm_sw_chan *chan = (void *)parent;
 	struct nvkm_nvsw *nvsw;
-	int ret;
 
-	ret = nvkm_object_create(parent, engine, oclass, 0, &nvsw);
+	if (!(nvsw = kzalloc(sizeof(*nvsw), GFP_KERNEL)))
+		return -ENOMEM;
 	*pobject = &nvsw->object;
-	if (ret)
-		return ret;
 
+	nvkm_object_ctor(&nvkm_nvsw_, oclass, &nvsw->object);
+	nvsw->func = func;
 	nvsw->chan = chan;
 	return 0;
 }
 
-struct nvkm_ofuncs
-nvkm_nvsw_ofuncs = {
-	.ctor = nvkm_nvsw_ctor,
-	.dtor = nvkm_object_destroy,
-	.init = _nvkm_object_init,
-	.fini = _nvkm_object_fini,
-	.ntfy = nvkm_nvsw_ntfy,
+static const struct nvkm_nvsw_func
+nvkm_nvsw = {
 };
+
+int
+nvkm_nvsw_new(struct nvkm_sw_chan *chan, const struct nvkm_oclass *oclass,
+	      void *data, u32 size, struct nvkm_object **pobject)
+{
+	return nvkm_nvsw_new_(&nvkm_nvsw, chan, oclass, data, size, pobject);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/sw/nvsw.h b/drivers/gpu/drm/nouveau/nvkm/engine/sw/nvsw.h
index c54a12798e847..943ef4c10091c 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/sw/nvsw.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/sw/nvsw.h
@@ -1,10 +1,21 @@
 #ifndef __NVKM_NVSW_H__
 #define __NVKM_NVSW_H__
+#define nvkm_nvsw(p) container_of((p), struct nvkm_nvsw, object)
 #include "priv.h"
 
-extern struct nvkm_ofuncs nvkm_nvsw_ofuncs;
-int
-nvkm_nvsw_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
-	       struct nvkm_oclass *oclass, void *data, u32 size,
-	       struct nvkm_object **pobject);
+struct nvkm_nvsw {
+	struct nvkm_object object;
+	const struct nvkm_nvsw_func *func;
+	struct nvkm_sw_chan *chan;
+};
+
+struct nvkm_nvsw_func {
+	int (*mthd)(struct nvkm_nvsw *, u32 mthd, void *data, u32 size);
+};
+
+int nvkm_nvsw_new_(const struct nvkm_nvsw_func *, struct nvkm_sw_chan *,
+		   const struct nvkm_oclass *, void *data, u32 size,
+		   struct nvkm_object **pobject);
+int nvkm_nvsw_new(struct nvkm_sw_chan *, const struct nvkm_oclass *,
+		  void *data, u32 size, struct nvkm_object **pobject);
 #endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/sw/priv.h b/drivers/gpu/drm/nouveau/nvkm/engine/sw/priv.h
index 42707355eb92c..ae610a32ef5ad 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/sw/priv.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/sw/priv.h
@@ -1,5 +1,18 @@
 #ifndef __NVKM_SW_PRIV_H__
 #define __NVKM_SW_PRIV_H__
+#define nvkm_sw(p) container_of((p), struct nvkm_sw, engine)
 #include <engine/sw.h>
+struct nvkm_sw_chan;
 
+struct nvkm_sw_chan_sclass {
+	int (*ctor)(struct nvkm_sw_chan *, const struct nvkm_oclass *,
+		    void *data, u32 size, struct nvkm_object **);
+	struct nvkm_sclass base;
+};
+
+struct nvkm_sw_func {
+	int (*chan_new)(struct nvkm_sw *, struct nvkm_fifo_chan *,
+			const struct nvkm_oclass *, struct nvkm_object **);
+	const struct nvkm_sw_chan_sclass sclass[];
+};
 #endif