6 files changed, 714 insertions, 0 deletions

diff --git a/drm/nouveau/nvkm/engine/software/Kbuild b/drm/nouveau/nvkm/engine/software/Kbuild
new file mode 100644
index 000000000..e1332a15d
--- /dev/null
+++ b/drm/nouveau/nvkm/engine/software/Kbuild
@@ -0,0 +1,4 @@
+nvkm-y += nvkm/engine/software/nv04.o
+nvkm-y += nvkm/engine/software/nv10.o
+nvkm-y += nvkm/engine/software/nv50.o
+nvkm-y += nvkm/engine/software/nvc0.o
diff --git a/drm/nouveau/nvkm/engine/software/nv04.c b/drm/nouveau/nvkm/engine/software/nv04.c
new file mode 100644
index 000000000..64df15c7f
--- /dev/null
+++ b/drm/nouveau/nvkm/engine/software/nv04.c
@@ -0,0 +1,146 @@
+/*
+ * 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/os.h>
+#include <core/engctx.h>
+
+#include <engine/software.h>
+#include <engine/fifo.h>
+
+struct nv04_software_priv {
+	struct nouveau_software base;
+};
+
+struct nv04_software_chan {
+	struct nouveau_software_chan base;
+};
+
+/*******************************************************************************
+ * software object classes
+ ******************************************************************************/
+
+static int
+nv04_software_set_ref(struct nouveau_object *object, u32 mthd,
+		      void *data, u32 size)
+{
+	struct nouveau_object *channel = (void *)nv_engctx(object->parent);
+	struct nouveau_fifo_chan *fifo = (void *)channel->parent;
+	atomic_set(&fifo->refcnt, *(u32*)data);
+	return 0;
+}
+
+static int
+nv04_software_flip(struct nouveau_object *object, u32 mthd,
+		   void *args, u32 size)
+{
+	struct nv04_software_chan *chan = (void *)nv_engctx(object->parent);
+	if (chan->base.flip)
+		return chan->base.flip(chan->base.flip_data);
+	return -EINVAL;
+}
+
+static struct nouveau_omthds
+nv04_software_omthds[] = {
+	{ 0x0150, 0x0150, nv04_software_set_ref },
+	{ 0x0500, 0x0500, nv04_software_flip },
+	{}
+};
+
+static struct nouveau_oclass
+nv04_software_sclass[] = {
+	{ 0x006e, &nouveau_object_ofuncs, nv04_software_omthds },
+	{}
+};
+
+/*******************************************************************************
+ * software context
+ ******************************************************************************/
+
+static int
+nv04_software_context_ctor(struct nouveau_object *parent,
+		      struct nouveau_object *engine,
+		      struct nouveau_oclass *oclass, void *data, u32 size,
+		      struct nouveau_object **pobject)
+{
+	struct nv04_software_chan *chan;
+	int ret;
+
+	ret = nouveau_software_context_create(parent, engine, oclass, &chan);
+	*pobject = nv_object(chan);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static struct nouveau_oclass
+nv04_software_cclass = {
+	.handle = NV_ENGCTX(SW, 0x04),
+	.ofuncs = &(struct nouveau_ofuncs) {
+		.ctor = nv04_software_context_ctor,
+		.dtor = _nouveau_software_context_dtor,
+		.init = _nouveau_software_context_init,
+		.fini = _nouveau_software_context_fini,
+	},
+};
+
+/*******************************************************************************
+ * software engine/subdev functions
+ ******************************************************************************/
+
+void
+nv04_software_intr(struct nouveau_subdev *subdev)
+{
+	nv_mask(subdev, 0x000100, 0x80000000, 0x00000000);
+}
+
+static int
+nv04_software_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
+	      struct nouveau_oclass *oclass, void *data, u32 size,
+	      struct nouveau_object **pobject)
+{
+	struct nv04_software_priv *priv;
+	int ret;
+
+	ret = nouveau_software_create(parent, engine, oclass, &priv);
+	*pobject = nv_object(priv);
+	if (ret)
+		return ret;
+
+	nv_engine(priv)->cclass = &nv04_software_cclass;
+	nv_engine(priv)->sclass = nv04_software_sclass;
+	nv_subdev(priv)->intr = nv04_software_intr;
+	return 0;
+}
+
+struct nouveau_oclass *
+nv04_software_oclass = &(struct nouveau_oclass) {
+	.handle = NV_ENGINE(SW, 0x04),
+	.ofuncs = &(struct nouveau_ofuncs) {
+		.ctor = nv04_software_ctor,
+		.dtor = _nouveau_software_dtor,
+		.init = _nouveau_software_init,
+		.fini = _nouveau_software_fini,
+	},
+};
diff --git a/drm/nouveau/nvkm/engine/software/nv10.c b/drm/nouveau/nvkm/engine/software/nv10.c
new file mode 100644
index 000000000..f54a2253d
--- /dev/null
+++ b/drm/nouveau/nvkm/engine/software/nv10.c
@@ -0,0 +1,128 @@
+/*
+ * 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/os.h>
+#include <core/engctx.h>
+
+#include <engine/software.h>
+
+struct nv10_software_priv {
+	struct nouveau_software base;
+};
+
+struct nv10_software_chan {
+	struct nouveau_software_chan base;
+};
+
+/*******************************************************************************
+ * software object classes
+ ******************************************************************************/
+
+static int
+nv10_software_flip(struct nouveau_object *object, u32 mthd,
+		   void *args, u32 size)
+{
+	struct nv10_software_chan *chan = (void *)nv_engctx(object->parent);
+	if (chan->base.flip)
+		return chan->base.flip(chan->base.flip_data);
+	return -EINVAL;
+}
+
+static struct nouveau_omthds
+nv10_software_omthds[] = {
+	{ 0x0500, 0x0500, nv10_software_flip },
+	{}
+};
+
+static struct nouveau_oclass
+nv10_software_sclass[] = {
+	{ 0x016e, &nouveau_object_ofuncs, nv10_software_omthds },
+	{}
+};
+
+/*******************************************************************************
+ * software context
+ ******************************************************************************/
+
+static int
+nv10_software_context_ctor(struct nouveau_object *parent,
+		      struct nouveau_object *engine,
+		      struct nouveau_oclass *oclass, void *data, u32 size,
+		      struct nouveau_object **pobject)
+{
+	struct nv10_software_chan *chan;
+	int ret;
+
+	ret = nouveau_software_context_create(parent, engine, oclass, &chan);
+	*pobject = nv_object(chan);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static struct nouveau_oclass
+nv10_software_cclass = {
+	.handle = NV_ENGCTX(SW, 0x04),
+	.ofuncs = &(struct nouveau_ofuncs) {
+		.ctor = nv10_software_context_ctor,
+		.dtor = _nouveau_software_context_dtor,
+		.init = _nouveau_software_context_init,
+		.fini = _nouveau_software_context_fini,
+	},
+};
+
+/*******************************************************************************
+ * software engine/subdev functions
+ ******************************************************************************/
+
+static int
+nv10_software_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
+	      struct nouveau_oclass *oclass, void *data, u32 size,
+	      struct nouveau_object **pobject)
+{
+	struct nv10_software_priv *priv;
+	int ret;
+
+	ret = nouveau_software_create(parent, engine, oclass, &priv);
+	*pobject = nv_object(priv);
+	if (ret)
+		return ret;
+
+	nv_engine(priv)->cclass = &nv10_software_cclass;
+	nv_engine(priv)->sclass = nv10_software_sclass;
+	nv_subdev(priv)->intr = nv04_software_intr;
+	return 0;
+}
+
+struct nouveau_oclass *
+nv10_software_oclass = &(struct nouveau_oclass) {
+	.handle = NV_ENGINE(SW, 0x10),
+	.ofuncs = &(struct nouveau_ofuncs) {
+		.ctor = nv10_software_ctor,
+		.dtor = _nouveau_software_dtor,
+		.init = _nouveau_software_init,
+		.fini = _nouveau_software_fini,
+	},
+};
diff --git a/drm/nouveau/nvkm/engine/software/nv50.c b/drm/nouveau/nvkm/engine/software/nv50.c
new file mode 100644
index 000000000..a0fec205f
--- /dev/null
+++ b/drm/nouveau/nvkm/engine/software/nv50.c
@@ -0,0 +1,241 @@
+/*
+ * 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/os.h>
+#include <core/engctx.h>
+#include <core/namedb.h>
+#include <core/handle.h>
+#include <core/gpuobj.h>
+#include <core/event.h>
+#include <nvif/event.h>
+
+#include <subdev/bar.h>
+
+#include <engine/disp.h>
+
+#include "nv50.h"
+
+/*******************************************************************************
+ * software object classes
+ ******************************************************************************/
+
+static int
+nv50_software_mthd_dma_vblsem(struct nouveau_object *object, u32 mthd,
+			      void *args, u32 size)
+{
+	struct nv50_software_chan *chan = (void *)nv_engctx(object->parent);
+	struct nouveau_fifo_chan *fifo = (void *)nv_object(chan)->parent;
+	struct nouveau_handle *handle;
+	int ret = -EINVAL;
+
+	handle = nouveau_namedb_get(nv_namedb(fifo), *(u32 *)args);
+	if (!handle)
+		return -ENOENT;
+
+	if (nv_iclass(handle->object, NV_GPUOBJ_CLASS)) {
+		struct nouveau_gpuobj *gpuobj = nv_gpuobj(handle->object);
+		chan->vblank.ctxdma = gpuobj->node->offset >> 4;
+		ret = 0;
+	}
+	nouveau_namedb_put(handle);
+	return ret;
+}
+
+static int
+nv50_software_mthd_vblsem_offset(struct nouveau_object *object, u32 mthd,
+				 void *args, u32 size)
+{
+	struct nv50_software_chan *chan = (void *)nv_engctx(object->parent);
+	chan->vblank.offset = *(u32 *)args;
+	return 0;
+}
+
+int
+nv50_software_mthd_vblsem_value(struct nouveau_object *object, u32 mthd,
+				void *args, u32 size)
+{
+	struct nv50_software_chan *chan = (void *)nv_engctx(object->parent);
+	chan->vblank.value = *(u32 *)args;
+	return 0;
+}
+
+int
+nv50_software_mthd_vblsem_release(struct nouveau_object *object, u32 mthd,
+				  void *args, u32 size)
+{
+	struct nv50_software_chan *chan = (void *)nv_engctx(object->parent);
+	u32 head = *(u32 *)args;
+	if (head >= nouveau_disp(chan)->vblank.index_nr)
+		return -EINVAL;
+
+	nvkm_notify_get(&chan->vblank.notify[head]);
+	return 0;
+}
+
+int
+nv50_software_mthd_flip(struct nouveau_object *object, u32 mthd,
+			void *args, u32 size)
+{
+	struct nv50_software_chan *chan = (void *)nv_engctx(object->parent);
+	if (chan->base.flip)
+		return chan->base.flip(chan->base.flip_data);
+	return -EINVAL;
+}
+
+static struct nouveau_omthds
+nv50_software_omthds[] = {
+	{ 0x018c, 0x018c, nv50_software_mthd_dma_vblsem },
+	{ 0x0400, 0x0400, nv50_software_mthd_vblsem_offset },
+	{ 0x0404, 0x0404, nv50_software_mthd_vblsem_value },
+	{ 0x0408, 0x0408, nv50_software_mthd_vblsem_release },
+	{ 0x0500, 0x0500, nv50_software_mthd_flip },
+	{}
+};
+
+static struct nouveau_oclass
+nv50_software_sclass[] = {
+	{ 0x506e, &nouveau_object_ofuncs, nv50_software_omthds },
+	{}
+};
+
+/*******************************************************************************
+ * software context
+ ******************************************************************************/
+
+static int
+nv50_software_vblsem_release(struct nvkm_notify *notify)
+{
+	struct nv50_software_chan *chan =
+		container_of(notify, typeof(*chan), vblank.notify[notify->index]);
+	struct nv50_software_priv *priv = (void *)nv_object(chan)->engine;
+	struct nouveau_bar *bar = nouveau_bar(priv);
+
+	nv_wr32(priv, 0x001704, chan->vblank.channel);
+	nv_wr32(priv, 0x001710, 0x80000000 | chan->vblank.ctxdma);
+	bar->flush(bar);
+
+	if (nv_device(priv)->chipset == 0x50) {
+		nv_wr32(priv, 0x001570, chan->vblank.offset);
+		nv_wr32(priv, 0x001574, chan->vblank.value);
+	} else {
+		nv_wr32(priv, 0x060010, chan->vblank.offset);
+		nv_wr32(priv, 0x060014, chan->vblank.value);
+	}
+
+	return NVKM_NOTIFY_DROP;
+}
+
+void
+nv50_software_context_dtor(struct nouveau_object *object)
+{
+	struct nv50_software_chan *chan = (void *)object;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(chan->vblank.notify); i++)
+		nvkm_notify_fini(&chan->vblank.notify[i]);
+
+	nouveau_software_context_destroy(&chan->base);
+}
+
+int
+nv50_software_context_ctor(struct nouveau_object *parent,
+			   struct nouveau_object *engine,
+			   struct nouveau_oclass *oclass, void *data, u32 size,
+			   struct nouveau_object **pobject)
+{
+	struct nouveau_disp *pdisp = nouveau_disp(parent);
+	struct nv50_software_cclass *pclass = (void *)oclass;
+	struct nv50_software_chan *chan;
+	int ret, i;
+
+	ret = nouveau_software_context_create(parent, engine, oclass, &chan);
+	*pobject = nv_object(chan);
+	if (ret)
+		return ret;
+
+	for (i = 0; pdisp && i < pdisp->vblank.index_nr; i++) {
+		ret = nvkm_notify_init(NULL, &pdisp->vblank, pclass->vblank,
+				       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;
+	}
+
+	chan->vblank.channel = nv_gpuobj(parent->parent)->addr >> 12;
+	return 0;
+}
+
+static struct nv50_software_cclass
+nv50_software_cclass = {
+	.base.handle = NV_ENGCTX(SW, 0x50),
+	.base.ofuncs = &(struct nouveau_ofuncs) {
+		.ctor = nv50_software_context_ctor,
+		.dtor = nv50_software_context_dtor,
+		.init = _nouveau_software_context_init,
+		.fini = _nouveau_software_context_fini,
+	},
+	.vblank = nv50_software_vblsem_release,
+};
+
+/*******************************************************************************
+ * software engine/subdev functions
+ ******************************************************************************/
+
+int
+nv50_software_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
+		   struct nouveau_oclass *oclass, void *data, u32 size,
+		   struct nouveau_object **pobject)
+{
+	struct nv50_software_oclass *pclass = (void *)oclass;
+	struct nv50_software_priv *priv;
+	int ret;
+
+	ret = nouveau_software_create(parent, engine, oclass, &priv);
+	*pobject = nv_object(priv);
+	if (ret)
+		return ret;
+
+	nv_engine(priv)->cclass = pclass->cclass;
+	nv_engine(priv)->sclass = pclass->sclass;
+	nv_subdev(priv)->intr = nv04_software_intr;
+	return 0;
+}
+
+struct nouveau_oclass *
+nv50_software_oclass = &(struct nv50_software_oclass) {
+	.base.handle = NV_ENGINE(SW, 0x50),
+	.base.ofuncs = &(struct nouveau_ofuncs) {
+		.ctor = nv50_software_ctor,
+		.dtor = _nouveau_software_dtor,
+		.init = _nouveau_software_init,
+		.fini = _nouveau_software_fini,
+	},
+	.cclass = &nv50_software_cclass.base,
+	.sclass =  nv50_software_sclass,
+}.base;
diff --git a/drm/nouveau/nvkm/engine/software/nv50.h b/drm/nouveau/nvkm/engine/software/nv50.h
new file mode 100644
index 000000000..41542e725
--- /dev/null
+++ b/drm/nouveau/nvkm/engine/software/nv50.h
@@ -0,0 +1,46 @@
+#ifndef __NVKM_SW_NV50_H__
+#define __NVKM_SW_NV50_H__
+
+#include <engine/software.h>
+
+struct nv50_software_oclass {
+	struct nouveau_oclass base;
+	struct nouveau_oclass *cclass;
+	struct nouveau_oclass *sclass;
+};
+
+struct nv50_software_priv {
+	struct nouveau_software base;
+};
+
+int  nv50_software_ctor(struct nouveau_object *, struct nouveau_object *,
+			struct nouveau_oclass *, void *, u32,
+			struct nouveau_object **);
+
+struct nv50_software_cclass {
+	struct nouveau_oclass base;
+	int (*vblank)(struct nvkm_notify *);
+};
+
+struct nv50_software_chan {
+	struct nouveau_software_chan base;
+	struct {
+		struct nvkm_notify notify[4];
+		u32 channel;
+		u32 ctxdma;
+		u64 offset;
+		u32 value;
+	} vblank;
+};
+
+int  nv50_software_context_ctor(struct nouveau_object *,
+				struct nouveau_object *,
+				struct nouveau_oclass *, void *, u32,
+				struct nouveau_object **);
+void nv50_software_context_dtor(struct nouveau_object *);
+
+int nv50_software_mthd_vblsem_value(struct nouveau_object *, u32, void *, u32);
+int nv50_software_mthd_vblsem_release(struct nouveau_object *, u32, void *, u32);
+int nv50_software_mthd_flip(struct nouveau_object *, u32, void *, u32);
+
+#endif
diff --git a/drm/nouveau/nvkm/engine/software/nvc0.c b/drm/nouveau/nvkm/engine/software/nvc0.c
new file mode 100644
index 000000000..6af370d3a
--- /dev/null
+++ b/drm/nouveau/nvkm/engine/software/nvc0.c
@@ -0,0 +1,149 @@
+/*
+ * 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/os.h>
+#include <core/engctx.h>
+#include <core/event.h>
+
+#include <subdev/bar.h>
+
+#include <engine/software.h>
+#include <engine/disp.h>
+
+#include "nv50.h"
+
+/*******************************************************************************
+ * software object classes
+ ******************************************************************************/
+
+static int
+nvc0_software_mthd_vblsem_offset(struct nouveau_object *object, u32 mthd,
+				 void *args, u32 size)
+{
+	struct nv50_software_chan *chan = (void *)nv_engctx(object->parent);
+	u64 data = *(u32 *)args;
+	if (mthd == 0x0400) {
+		chan->vblank.offset &= 0x00ffffffffULL;
+		chan->vblank.offset |= data << 32;
+	} else {
+		chan->vblank.offset &= 0xff00000000ULL;
+		chan->vblank.offset |= data;
+	}
+	return 0;
+}
+
+static int
+nvc0_software_mthd_mp_control(struct nouveau_object *object, u32 mthd,
+                              void *args, u32 size)
+{
+	struct nv50_software_chan *chan = (void *)nv_engctx(object->parent);
+	struct nv50_software_priv *priv = (void *)nv_object(chan)->engine;
+	u32 data = *(u32 *)args;
+
+	switch (mthd) {
+	case 0x600:
+		nv_wr32(priv, 0x419e00, data); /* MP.PM_UNK000 */
+		break;
+	case 0x644:
+		if (data & ~0x1ffffe)
+			return -EINVAL;
+		nv_wr32(priv, 0x419e44, data); /* MP.TRAP_WARP_ERROR_EN */
+		break;
+	case 0x6ac:
+		nv_wr32(priv, 0x419eac, data); /* MP.PM_UNK0AC */
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static struct nouveau_omthds
+nvc0_software_omthds[] = {
+	{ 0x0400, 0x0400, nvc0_software_mthd_vblsem_offset },
+	{ 0x0404, 0x0404, nvc0_software_mthd_vblsem_offset },
+	{ 0x0408, 0x0408, nv50_software_mthd_vblsem_value },
+	{ 0x040c, 0x040c, nv50_software_mthd_vblsem_release },
+	{ 0x0500, 0x0500, nv50_software_mthd_flip },
+	{ 0x0600, 0x0600, nvc0_software_mthd_mp_control },
+	{ 0x0644, 0x0644, nvc0_software_mthd_mp_control },
+	{ 0x06ac, 0x06ac, nvc0_software_mthd_mp_control },
+	{}
+};
+
+static struct nouveau_oclass
+nvc0_software_sclass[] = {
+	{ 0x906e, &nouveau_object_ofuncs, nvc0_software_omthds },
+	{}
+};
+
+/*******************************************************************************
+ * software context
+ ******************************************************************************/
+
+static int
+nvc0_software_vblsem_release(struct nvkm_notify *notify)
+{
+	struct nv50_software_chan *chan =
+		container_of(notify, typeof(*chan), vblank.notify[notify->index]);
+	struct nv50_software_priv *priv = (void *)nv_object(chan)->engine;
+	struct nouveau_bar *bar = nouveau_bar(priv);
+
+	nv_wr32(priv, 0x001718, 0x80000000 | chan->vblank.channel);
+	bar->flush(bar);
+	nv_wr32(priv, 0x06000c, upper_32_bits(chan->vblank.offset));
+	nv_wr32(priv, 0x060010, lower_32_bits(chan->vblank.offset));
+	nv_wr32(priv, 0x060014, chan->vblank.value);
+
+	return NVKM_NOTIFY_DROP;
+}
+
+static struct nv50_software_cclass
+nvc0_software_cclass = {
+	.base.handle = NV_ENGCTX(SW, 0xc0),
+	.base.ofuncs = &(struct nouveau_ofuncs) {
+		.ctor = nv50_software_context_ctor,
+		.dtor = nv50_software_context_dtor,
+		.init = _nouveau_software_context_init,
+		.fini = _nouveau_software_context_fini,
+	},
+	.vblank = nvc0_software_vblsem_release,
+};
+
+/*******************************************************************************
+ * software engine/subdev functions
+ ******************************************************************************/
+
+struct nouveau_oclass *
+nvc0_software_oclass = &(struct nv50_software_oclass) {
+	.base.handle = NV_ENGINE(SW, 0xc0),
+	.base.ofuncs = &(struct nouveau_ofuncs) {
+		.ctor = nv50_software_ctor,
+		.dtor = _nouveau_software_dtor,
+		.init = _nouveau_software_init,
+		.fini = _nouveau_software_fini,
+	},
+	.cclass = &nvc0_software_cclass.base,
+	.sclass =  nvc0_software_sclass,
+}.base;