drm/nouveau/fifo: add new engine object handling

Simplifies the GPU-specific code, completing the switch to newer HALs.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>

22 files changed, 94 insertions, 228 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.c
index a35439dda054..4f99e5bf4e7f 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.c
@@ -39,70 +39,6 @@ const struct nvkm_event_func
 nvkm_chan_event = {
 };
 
-struct nvkm_fifo_chan_object {
-	struct nvkm_oproxy oproxy;
-	struct nvkm_fifo_chan *chan;
-	int hash;
-};
-
-static void
-nvkm_fifo_chan_child_del(struct nvkm_oproxy *base)
-{
-	struct nvkm_fifo_chan_object *object =
-		container_of(base, typeof(*object), oproxy);
-	struct nvkm_fifo_chan *chan = object->chan;
-
-	if (chan->func->object_dtor)
-		chan->func->object_dtor(chan, object->hash);
-}
-
-static const struct nvkm_oproxy_func
-nvkm_fifo_chan_child_func = {
-	.dtor[0] = nvkm_fifo_chan_child_del,
-};
-
-int
-nvkm_fifo_chan_child_new(const struct nvkm_oclass *oclass, void *data, u32 size,
-			 struct nvkm_object **pobject)
-{
-	struct nvkm_engine *engine = oclass->engine;
-	struct nvkm_fifo_chan *chan = nvkm_fifo_chan(oclass->parent);
-	struct nvkm_ectx *engn = nvkm_list_find(engn, &chan->cgrp->ectxs, head,
-						engn->engn->engine == engine);
-	struct nvkm_fifo_chan_object *object;
-	int ret = 0;
-
-	if (!(object = kzalloc(sizeof(*object), GFP_KERNEL)))
-		return -ENOMEM;
-	nvkm_oproxy_ctor(&nvkm_fifo_chan_child_func, oclass, &object->oproxy);
-	object->chan = chan;
-	*pobject = &object->oproxy.base;
-
-
-	ret = oclass->base.ctor(&(const struct nvkm_oclass) {
-					.base = oclass->base,
-					.engn = oclass->engn,
-					.handle = oclass->handle,
-					.object = oclass->object,
-					.client = oclass->client,
-					.parent = engn->object ?
-						  engn->object :
-						  oclass->parent,
-					.engine = engine,
-				}, data, size, &object->oproxy.object);
-	if (ret)
-		return ret;
-
-	if (chan->func->object_ctor) {
-		object->hash =
-			chan->func->object_ctor(chan, object->oproxy.object);
-		if (object->hash < 0)
-			return object->hash;
-	}
-
-	return 0;
-}
-
 void
 nvkm_chan_cctx_bind(struct nvkm_chan *chan, struct nvkm_engn *engn, struct nvkm_cctx *cctx)
 {
@@ -455,8 +391,6 @@ nvkm_fifo_chan_ctor(const struct nvkm_fifo_chan_func *fn,
 
 	*func = *fifo->func->chan.func;
 	func->dtor = fn->dtor;
-	func->object_ctor = fn->object_ctor;
-	func->object_dtor = fn->object_dtor;
 
 	chan->func = func;
 	chan->id = -1;
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.h b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.h
index bb142593d8b6..836f9ecb13c6 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.h
@@ -52,8 +52,6 @@ struct nvkm_chan_func {
 	u32 (*doorbell_handle)(struct nvkm_chan *);
 
 	void *(*dtor)(struct nvkm_fifo_chan *);
-	int  (*object_ctor)(struct nvkm_fifo_chan *, struct nvkm_object *);
-	void (*object_dtor)(struct nvkm_fifo_chan *, int);
 };
 
 int nvkm_fifo_chan_ctor(const struct nvkm_fifo_chan_func *, struct nvkm_fifo *,
@@ -78,6 +76,4 @@ void nvkm_chan_cctx_bind(struct nvkm_chan *, struct nvkm_engn *, struct nvkm_cct
 #define CHAN_PRINT(c,l,p,f,a...) CGRP_PRINT((c)->cgrp, l, p, "%04x:"f, (c)->id, ##a)
 #define CHAN_ERROR(c,f,a...) CHAN_PRCLI((c), ERROR,    err, " "f"\n", ##a)
 #define CHAN_TRACE(c,f,a...) CHAN_PRINT((c), TRACE,   info, " "f"\n", ##a)
-
-int nvkm_fifo_chan_child_new(const struct nvkm_oclass *, void *, u32, struct nvkm_object **);
 #endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chang84.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chang84.c
index 359d8b5b124c..fc266af2cf53 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chang84.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chang84.c
@@ -30,42 +30,9 @@
 
 #include <nvif/cl826e.h>
 
-static int
-g84_fifo_chan_object_ctor(struct nvkm_fifo_chan *base,
-			  struct nvkm_object *object)
-{
-	struct nv50_fifo_chan *chan = nv50_fifo_chan(base);
-	u32 handle = object->handle;
-	u32 context;
-
-	switch (object->engine->subdev.type) {
-	case NVKM_ENGINE_DMAOBJ:
-	case NVKM_ENGINE_SW    : context = 0x00000000; break;
-	case NVKM_ENGINE_GR    : context = 0x00100000; break;
-	case NVKM_ENGINE_MPEG  :
-	case NVKM_ENGINE_MSPPP : context = 0x00200000; break;
-	case NVKM_ENGINE_ME    :
-	case NVKM_ENGINE_CE    : context = 0x00300000; break;
-	case NVKM_ENGINE_VP    :
-	case NVKM_ENGINE_MSPDEC: context = 0x00400000; break;
-	case NVKM_ENGINE_CIPHER:
-	case NVKM_ENGINE_SEC   :
-	case NVKM_ENGINE_VIC   : context = 0x00500000; break;
-	case NVKM_ENGINE_BSP   :
-	case NVKM_ENGINE_MSVLD : context = 0x00600000; break;
-	default:
-		WARN_ON(1);
-		return -EINVAL;
-	}
-
-	return nvkm_ramht_insert(chan->ramht, object, 0, 4, handle, context);
-}
-
 static const struct nvkm_fifo_chan_func
 g84_fifo_chan_func = {
 	.dtor = nv50_fifo_chan_dtor,
-	.object_ctor = g84_fifo_chan_object_ctor,
-	.object_dtor = nv50_fifo_chan_object_dtor,
 };
 
 int
@@ -95,6 +62,5 @@ g84_fifo_chan_ctor(struct nv50_fifo *fifo, u64 vmm, u64 push,
 				  BIT(G84_FIFO_ENGN_MSVLD) |
 				  BIT(G84_FIFO_ENGN_DMA),
 				  0, 0xc00000, 0x2000, oclass, &chan->base);
-	chan->fifo = fifo;
 	return ret;
 }
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/changf100.h b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/changf100.h
index 739cd750742e..e94c16b0efb6 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/changf100.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/changf100.h
@@ -7,7 +7,6 @@
 
 struct gf100_fifo_chan {
 	struct nvkm_fifo_chan base;
-	struct gf100_fifo *fifo;
 
 #define GF100_FIFO_ENGN_GR     0
 #define GF100_FIFO_ENGN_MSPDEC 1
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/changk104.h b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/changk104.h
index 2043f06f500b..3450f6349db3 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/changk104.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/changk104.h
@@ -7,7 +7,6 @@
 
 struct gk104_fifo_chan {
 	struct nvkm_fifo_chan base;
-	struct gk104_fifo *fifo;
 	int runl;
 
 #define GK104_FIFO_ENGN_SW 15
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/channv04.h b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/channv04.h
index 5ebfa2241750..5a1717888978 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/channv04.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/channv04.h
@@ -7,7 +7,6 @@
 
 struct nv04_fifo_chan {
 	struct nvkm_fifo_chan base;
-	struct nv04_fifo *fifo;
 #define NV04_FIFO_ENGN_SW   0
 #define NV04_FIFO_ENGN_GR   1
 #define NV04_FIFO_ENGN_MPEG 2
@@ -16,7 +15,6 @@ struct nv04_fifo_chan {
 
 extern const struct nvkm_fifo_chan_func nv04_fifo_dma_func;
 void *nv04_fifo_dma_dtor(struct nvkm_fifo_chan *);
-void nv04_fifo_dma_object_dtor(struct nvkm_fifo_chan *, int);
 
 extern const struct nvkm_fifo_chan_oclass nv04_fifo_dma_oclass;
 extern const struct nvkm_fifo_chan_oclass nv10_fifo_dma_oclass;
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/channv50.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/channv50.c
index cb5606041499..0ad6354b9ccc 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/channv50.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/channv50.c
@@ -28,34 +28,6 @@
 #include <subdev/mmu.h>
 #include <subdev/timer.h>
 
-void
-nv50_fifo_chan_object_dtor(struct nvkm_fifo_chan *base, int cookie)
-{
-	struct nv50_fifo_chan *chan = nv50_fifo_chan(base);
-	nvkm_ramht_remove(chan->ramht, cookie);
-}
-
-static int
-nv50_fifo_chan_object_ctor(struct nvkm_fifo_chan *base,
-			   struct nvkm_object *object)
-{
-	struct nv50_fifo_chan *chan = nv50_fifo_chan(base);
-	u32 handle = object->handle;
-	u32 context;
-
-	switch (object->engine->subdev.type) {
-	case NVKM_ENGINE_DMAOBJ:
-	case NVKM_ENGINE_SW    : context = 0x00000000; break;
-	case NVKM_ENGINE_GR    : context = 0x00100000; break;
-	case NVKM_ENGINE_MPEG  : context = 0x00200000; break;
-	default:
-		WARN_ON(1);
-		return -EINVAL;
-	}
-
-	return nvkm_ramht_insert(chan->ramht, object, 0, 4, handle, context);
-}
-
 void *
 nv50_fifo_chan_dtor(struct nvkm_fifo_chan *base)
 {
@@ -66,8 +38,6 @@ nv50_fifo_chan_dtor(struct nvkm_fifo_chan *base)
 static const struct nvkm_fifo_chan_func
 nv50_fifo_chan_func = {
 	.dtor = nv50_fifo_chan_dtor,
-	.object_ctor = nv50_fifo_chan_object_ctor,
-	.object_dtor = nv50_fifo_chan_object_dtor,
 };
 
 int
@@ -87,6 +57,5 @@ nv50_fifo_chan_ctor(struct nv50_fifo *fifo, u64 vmm, u64 push,
 				  BIT(NV50_FIFO_ENGN_MPEG) |
 				  BIT(NV50_FIFO_ENGN_DMA),
 				  0, 0xc00000, 0x2000, oclass, &chan->base);
-	chan->fifo = fifo;
 	return ret;
 }
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/channv50.h b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/channv50.h
index ced832c7f425..ea4ec3bc4b8a 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/channv50.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/channv50.h
@@ -6,11 +6,8 @@
 #include "nv50.h"
 
 struct nv50_fifo_chan {
-	struct nv50_fifo *fifo;
 	struct nvkm_fifo_chan base;
 
-	struct nvkm_ramht *ramht;
-
 #define NV50_FIFO_ENGN_SW   0
 #define NV50_FIFO_ENGN_GR   1
 #define NV50_FIFO_ENGN_MPEG 2
@@ -35,7 +32,6 @@ struct nv50_fifo_chan {
 int nv50_fifo_chan_ctor(struct nv50_fifo *, u64 vmm, u64 push,
 			const struct nvkm_oclass *, struct nv50_fifo_chan *);
 void *nv50_fifo_chan_dtor(struct nvkm_fifo_chan *);
-void nv50_fifo_chan_object_dtor(struct nvkm_fifo_chan *, int);
 
 int g84_fifo_chan_ctor(struct nv50_fifo *, u64 vmm, u64 push,
 		       const struct nvkm_oclass *, struct nv50_fifo_chan *);
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv04.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv04.c
index 4220120d8bb8..41f7f22ed935 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv04.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv04.c
@@ -31,44 +31,6 @@
 #include <nvif/cl006b.h>
 #include <nvif/unpack.h>
 
-void
-nv04_fifo_dma_object_dtor(struct nvkm_fifo_chan *base, int cookie)
-{
-	struct nv04_fifo_chan *chan = nv04_fifo_chan(base);
-	struct nvkm_instmem *imem = chan->fifo->base.engine.subdev.device->imem;
-
-	mutex_lock(&chan->fifo->base.mutex);
-	nvkm_ramht_remove(imem->ramht, cookie);
-	mutex_unlock(&chan->fifo->base.mutex);
-}
-
-static int
-nv04_fifo_dma_object_ctor(struct nvkm_fifo_chan *base,
-			  struct nvkm_object *object)
-{
-	struct nv04_fifo_chan *chan = nv04_fifo_chan(base);
-	struct nvkm_instmem *imem = chan->fifo->base.engine.subdev.device->imem;
-	u32 context = 0x80000000 | chan->base.chid << 24;
-	u32 handle  = object->handle;
-	int hash;
-
-	switch (object->engine->subdev.type) {
-	case NVKM_ENGINE_DMAOBJ:
-	case NVKM_ENGINE_SW    : context |= 0x00000000; break;
-	case NVKM_ENGINE_GR    : context |= 0x00010000; break;
-	case NVKM_ENGINE_MPEG  : context |= 0x00020000; break;
-	default:
-		WARN_ON(1);
-		return -EINVAL;
-	}
-
-	mutex_lock(&chan->fifo->base.mutex);
-	hash = nvkm_ramht_insert(imem->ramht, object, chan->base.chid, 4,
-				 handle, context);
-	mutex_unlock(&chan->fifo->base.mutex);
-	return hash;
-}
-
 void *
 nv04_fifo_dma_dtor(struct nvkm_fifo_chan *base)
 {
@@ -79,8 +41,6 @@ nv04_fifo_dma_dtor(struct nvkm_fifo_chan *base)
 const struct nvkm_fifo_chan_func
 nv04_fifo_dma_func = {
 	.dtor = nv04_fifo_dma_dtor,
-	.object_ctor = nv04_fifo_dma_object_ctor,
-	.object_dtor = nv04_fifo_dma_object_dtor,
 };
 
 static int
@@ -115,7 +75,6 @@ nv04_fifo_dma_new(struct nvkm_fifo *base, const struct nvkm_oclass *oclass,
 				  BIT(NV04_FIFO_ENGN_GR) |
 				  BIT(NV04_FIFO_ENGN_DMA),
 				  0, 0x800000, 0x10000, oclass, &chan->base);
-	chan->fifo = fifo;
 	if (ret)
 		return ret;
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv10.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv10.c
index aa5893c11203..49a000fabc5a 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv10.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv10.c
@@ -63,7 +63,6 @@ nv10_fifo_dma_new(struct nvkm_fifo *base, const struct nvkm_oclass *oclass,
 				  BIT(NV04_FIFO_ENGN_GR) |
 				  BIT(NV04_FIFO_ENGN_DMA),
 				  0, 0x800000, 0x10000, oclass, &chan->base);
-	chan->fifo = fifo;
 	if (ret)
 		return ret;
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv17.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv17.c
index 0a7d145ce5aa..cad8c5ec8dbb 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv17.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv17.c
@@ -64,7 +64,6 @@ nv17_fifo_dma_new(struct nvkm_fifo *base, const struct nvkm_oclass *oclass,
 				  BIT(NV04_FIFO_ENGN_MPEG) | /* NV31- */
 				  BIT(NV04_FIFO_ENGN_DMA),
 				  0, 0x800000, 0x10000, oclass, &chan->base);
-	chan->fifo = fifo;
 	if (ret)
 		return ret;
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv40.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv40.c
index ca6fd8a5af6b..e922e4a5ab1a 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv40.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv40.c
@@ -31,38 +31,8 @@
 #include <nvif/cl006b.h>
 #include <nvif/unpack.h>
 
-static int
-nv40_fifo_dma_object_ctor(struct nvkm_fifo_chan *base,
-			  struct nvkm_object *object)
-{
-	struct nv04_fifo_chan *chan = nv04_fifo_chan(base);
-	struct nvkm_instmem *imem = chan->fifo->base.engine.subdev.device->imem;
-	u32 context = chan->base.chid << 23;
-	u32 handle  = object->handle;
-	int hash;
-
-	switch (object->engine->subdev.type) {
-	case NVKM_ENGINE_DMAOBJ:
-	case NVKM_ENGINE_SW    : context |= 0x00000000; break;
-	case NVKM_ENGINE_GR    : context |= 0x00100000; break;
-	case NVKM_ENGINE_MPEG  : context |= 0x00200000; break;
-	default:
-		WARN_ON(1);
-		return -EINVAL;
-	}
-
-	mutex_lock(&chan->fifo->base.mutex);
-	hash = nvkm_ramht_insert(imem->ramht, object, chan->base.chid, 4,
-				 handle, context);
-	mutex_unlock(&chan->fifo->base.mutex);
-	return hash;
-}
-
 static const struct nvkm_fifo_chan_func
 nv40_fifo_dma_func = {
-	.dtor = nv04_fifo_dma_dtor,
-	.object_ctor = nv40_fifo_dma_object_ctor,
-	.object_dtor = nv04_fifo_dma_object_dtor,
 };
 
 static int
@@ -98,7 +68,6 @@ nv40_fifo_dma_new(struct nvkm_fifo *base, const struct nvkm_oclass *oclass,
 				  BIT(NV04_FIFO_ENGN_MPEG) |
 				  BIT(NV04_FIFO_ENGN_DMA),
 				  0, 0xc00000, 0x1000, oclass, &chan->base);
-	chan->fifo = fifo;
 	if (ret)
 		return ret;
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/g84.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/g84.c
index 2bc835f2ef74..bc72c536f60d 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/g84.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/g84.c
@@ -68,8 +68,6 @@ g84_chan_ramfc_write(struct nvkm_chan *chan, u64 offset, u64 length, u32 devm, b
 	if (ret)
 		return ret;
 
-	nv50_fifo_chan(chan)->ramht = chan->ramht;
-
 	nvkm_kmap(chan->ramfc);
 	nvkm_wo32(chan->ramfc, 0x3c, 0x403f6078);
 	nvkm_wo32(chan->ramfc, 0x44, 0x01003fff);
@@ -158,6 +156,8 @@ g84_ectx_bind(struct nvkm_engn *engn, struct nvkm_cctx *cctx, struct nvkm_chan *
 const struct nvkm_engn_func
 g84_engn = {
 	.bind = g84_ectx_bind,
+	.ramht_add = nv50_eobj_ramht_add,
+	.ramht_del = nv50_eobj_ramht_del,
 };
 
 static void
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogf100.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogf100.c
index 6ba4335d40bc..f87a54e2f575 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogf100.c
@@ -70,7 +70,6 @@ gf100_fifo_gpfifo_new(struct nvkm_fifo *base, const struct nvkm_oclass *oclass,
 	if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
 		return -ENOMEM;
 	*pobject = &chan->base.object;
-	chan->fifo = fifo;
 
 	ret = nvkm_fifo_chan_ctor(&gf100_fifo_gpfifo_func, &fifo->base,
 				  0x1000, 0x1000, true, args->v0.vmm, 0,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogk104.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogk104.c
index 28a7a5eae72c..5036edb62dbd 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogk104.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogk104.c
@@ -62,7 +62,6 @@ gk104_fifo_gpfifo_new_(struct gk104_fifo *fifo, u64 *runlists, u16 *chid,
 	if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
 		return -ENOMEM;
 	*pobject = &chan->base.object;
-	chan->fifo = fifo;
 	chan->runl = runlist;
 
 	ret = nvkm_fifo_chan_ctor(&gk104_fifo_gpfifo_func, &fifo->base,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogv100.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogv100.c
index 3c2c76bcbe79..a97ec53d7e6e 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogv100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogv100.c
@@ -51,7 +51,6 @@ gv100_fifo_gpfifo_new_(const struct nvkm_fifo_chan_func *func,
 	if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
 		return -ENOMEM;
 	*pobject = &chan->base.object;
-	chan->fifo = fifo;
 	chan->runl = runlist;
 
 	ret = nvkm_fifo_chan_ctor(func, &fifo->base, 0x1000, 0x1000, true, vmm,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv04.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv04.c
index 08de6ee612ce..73ae205fc6ba 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv04.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv04.c
@@ -178,8 +178,35 @@ const struct nvkm_cgrp_func
 nv04_cgrp = {
 };
 
+void
+nv04_eobj_ramht_del(struct nvkm_chan *chan, int hash)
+{
+	struct nvkm_fifo *fifo = chan->cgrp->runl->fifo;
+	struct nvkm_instmem *imem = fifo->engine.subdev.device->imem;
+
+	mutex_lock(&fifo->mutex);
+	nvkm_ramht_remove(imem->ramht, hash);
+	mutex_unlock(&fifo->mutex);
+}
+
+static int
+nv04_eobj_ramht_add(struct nvkm_engn *engn, struct nvkm_object *eobj, struct nvkm_chan *chan)
+{
+	struct nvkm_fifo *fifo = chan->cgrp->runl->fifo;
+	struct nvkm_instmem *imem = fifo->engine.subdev.device->imem;
+	u32 context = 0x80000000 | chan->id << 24 | engn->id << 16;
+	int hash;
+
+	mutex_lock(&fifo->mutex);
+	hash = nvkm_ramht_insert(imem->ramht, eobj, chan->id, 4, eobj->handle, context);
+	mutex_unlock(&fifo->mutex);
+	return hash;
+}
+
 const struct nvkm_engn_func
 nv04_engn = {
+	.ramht_add = nv04_eobj_ramht_add,
+	.ramht_del = nv04_eobj_ramht_del,
 };
 
 void
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv40.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv40.c
index f27ca3e7bb27..7574be50d959 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv40.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv40.c
@@ -108,6 +108,20 @@ nv40_chan = {
 	.stop = nv04_chan_stop,
 };
 
+static int
+nv40_eobj_ramht_add(struct nvkm_engn *engn, struct nvkm_object *eobj, struct nvkm_chan *chan)
+{
+	struct nvkm_fifo *fifo = chan->cgrp->runl->fifo;
+	struct nvkm_instmem *imem = fifo->engine.subdev.device->imem;
+	u32 context = chan->id << 23 | engn->id << 20;
+	int hash;
+
+	mutex_lock(&fifo->mutex);
+	hash = nvkm_ramht_insert(imem->ramht, eobj, chan->id, 4, eobj->handle, context);
+	mutex_unlock(&fifo->mutex);
+	return hash;
+}
+
 static void
 nv40_ectx_bind(struct nvkm_engn *engn, struct nvkm_cctx *cctx, struct nvkm_chan *chan)
 {
@@ -154,10 +168,14 @@ nv40_ectx_bind(struct nvkm_engn *engn, struct nvkm_cctx *cctx, struct nvkm_chan
 static const struct nvkm_engn_func
 nv40_engn = {
 	.bind = nv40_ectx_bind,
+	.ramht_add = nv40_eobj_ramht_add,
+	.ramht_del = nv04_eobj_ramht_del,
 };
 
 static const struct nvkm_engn_func
 nv40_engn_sw = {
+	.ramht_add = nv40_eobj_ramht_add,
+	.ramht_del = nv04_eobj_ramht_del,
 };
 
 static void
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv50.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv50.c
index f068a27d9338..829c52a44a36 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv50.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv50.c
@@ -35,6 +35,18 @@
 #include <nvif/class.h>
 
 void
+nv50_eobj_ramht_del(struct nvkm_chan *chan, int hash)
+{
+	nvkm_ramht_remove(chan->ramht, hash);
+}
+
+int
+nv50_eobj_ramht_add(struct nvkm_engn *engn, struct nvkm_object *eobj, struct nvkm_chan *chan)
+{
+	return nvkm_ramht_insert(chan->ramht, eobj, 0, 4, eobj->handle, engn->id << 20);
+}
+
+void
 nv50_chan_stop(struct nvkm_chan *chan)
 {
 	struct nvkm_device *device = chan->cgrp->runl->fifo->engine.subdev.device;
@@ -89,8 +101,6 @@ nv50_chan_ramfc_write(struct nvkm_chan *chan, u64 offset, u64 length, u32 devm,
 	if (ret)
 		return ret;
 
-	nv50_fifo_chan(chan)->ramht = chan->ramht;
-
 	nvkm_kmap(chan->ramfc);
 	nvkm_wo32(chan->ramfc, 0x3c, 0x403f6078);
 	nvkm_wo32(chan->ramfc, 0x44, 0x01003fff);
@@ -196,10 +206,14 @@ nv50_ectx_bind(struct nvkm_engn *engn, struct nvkm_cctx *cctx, struct nvkm_chan
 static const struct nvkm_engn_func
 nv50_engn = {
 	.bind = nv50_ectx_bind,
+	.ramht_add = nv50_eobj_ramht_add,
+	.ramht_del = nv50_eobj_ramht_del,
 };
 
 const struct nvkm_engn_func
 nv50_engn_sw = {
+	.ramht_add = nv50_eobj_ramht_add,
+	.ramht_del = nv50_eobj_ramht_del,
 };
 
 static bool
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/priv.h b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/priv.h
index 13b218518984..a5df5e2d9d4b 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/priv.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/priv.h
@@ -85,6 +85,7 @@ extern const struct nvkm_chan_func_userd nv04_chan_userd;
 void nv04_chan_ramfc_clear(struct nvkm_chan *);
 void nv04_chan_start(struct nvkm_chan *);
 void nv04_chan_stop(struct nvkm_chan *);
+void nv04_eobj_ramht_del(struct nvkm_chan *, int);
 
 int nv10_fifo_chid_nr(struct nvkm_fifo *);
 
@@ -101,6 +102,8 @@ void nv50_chan_unbind(struct nvkm_chan *);
 void nv50_chan_start(struct nvkm_chan *);
 void nv50_chan_stop(struct nvkm_chan *);
 void nv50_chan_preempt(struct nvkm_chan *);
+int nv50_eobj_ramht_add(struct nvkm_engn *, struct nvkm_object *, struct nvkm_chan *);
+void nv50_eobj_ramht_del(struct nvkm_chan *, int);
 
 extern const struct nvkm_event_func g84_fifo_nonstall;
 extern const struct nvkm_engn_func g84_engn;
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/runl.h b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/runl.h
index 86bca72c68bc..5159b64377c5 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/runl.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/runl.h
@@ -5,6 +5,7 @@ struct nvkm_cctx;
 struct nvkm_cgrp;
 struct nvkm_chan;
 struct nvkm_memory;
+struct nvkm_object;
 struct nvkm_vctx;
 enum nvkm_subdev_type;
 
@@ -16,6 +17,8 @@ struct nvkm_engn {
 		bool (*mmu_fault_triggered)(struct nvkm_engn *);
 		int (*ctor)(struct nvkm_engn *, struct nvkm_vctx *);
 		void (*bind)(struct nvkm_engn *, struct nvkm_cctx *, struct nvkm_chan *);
+		int (*ramht_add)(struct nvkm_engn *, struct nvkm_object *, struct nvkm_chan *);
+		void (*ramht_del)(struct nvkm_chan *, int hash);
 	} *func;
 	struct nvkm_runl *runl;
 	int id;
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/uchan.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/uchan.c
index f35bdd245233..1a89c9313662 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/uchan.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/uchan.c
@@ -67,6 +67,7 @@ struct nvkm_uobj {
 	struct nvkm_oproxy oproxy;
 	struct nvkm_chan *chan;
 	struct nvkm_cctx *cctx;
+	int hash;
 };
 
 static int
@@ -129,10 +130,15 @@ static void
 nvkm_uchan_object_dtor(struct nvkm_oproxy *oproxy)
 {
 	struct nvkm_uobj *uobj = container_of(oproxy, typeof(*uobj), oproxy);
+	struct nvkm_engn *engn;
 
 	if (!uobj->cctx)
 		return;
 
+	engn = uobj->cctx->vctx->ectx->engn;
+	if (engn->func->ramht_del)
+		engn->func->ramht_del(uobj->chan, uobj->hash);
+
 	nvkm_chan_cctx_put(uobj->chan, &uobj->cctx);
 }
 
@@ -151,7 +157,6 @@ nvkm_uchan_object_new(const struct nvkm_oclass *oclass, void *argv, u32 argc,
 	struct nvkm_cgrp *cgrp = chan->cgrp;
 	struct nvkm_engn *engn;
 	struct nvkm_uobj *uobj;
-	struct nvkm_oclass _oclass;
 	int ret;
 
 	/* Lookup host engine state for target engine. */
@@ -173,9 +178,25 @@ nvkm_uchan_object_new(const struct nvkm_oclass *oclass, void *argv, u32 argc,
 		return ret;
 
 	/* Allocate HW object. */
-	_oclass = *oclass;
-	_oclass.parent = &chan->object;
-	return nvkm_fifo_chan_child_new(&_oclass, argv, argc, &uobj->oproxy.object);
+	ret = oclass->base.ctor(&(const struct nvkm_oclass) {
+					.base = oclass->base,
+					.engn = oclass->engn,
+					.handle = oclass->handle,
+					.object = oclass->object,
+					.client = oclass->client,
+					.parent = uobj->cctx->vctx->ectx->object ?: oclass->parent,
+					.engine = engn->engine,
+				 }, argv, argc, &uobj->oproxy.object);
+	if (ret)
+		return ret;
+
+	if (engn->func->ramht_add) {
+		uobj->hash = engn->func->ramht_add(engn, uobj->oproxy.object, uobj->chan);
+		if (uobj->hash < 0)
+			return uobj->hash;
+	}
+
+	return 0;
 }
 
 static int