drm/nouveau/fifo: index backend engctx by engine id

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

drivers/gpu/drm/nouveau/nvkm/engine/fifo/chang84.c

@@ -114,7 +114,7 @@ g84_fifo_chan_engine_init(struct nvkm_fifo_chan *base,
 			  struct nvkm_engine *engine)
 {
 	struct nv50_fifo_chan *chan = nv50_fifo_chan(base);
-	struct nvkm_gpuobj *engn = chan->engn[engine->subdev.index];
+	struct nvkm_gpuobj *engn = *nv50_fifo_chan_engine(chan, engine);
 	u64 limit, start;
 	int offset;
 
@@ -142,12 +142,11 @@ g84_fifo_chan_engine_ctor(struct nvkm_fifo_chan *base,
 			  struct nvkm_object *object)
 {
 	struct nv50_fifo_chan *chan = nv50_fifo_chan(base);
-	int engn = engine->subdev.index;
 
 	if (g84_fifo_chan_engine_addr(engine) < 0)
 		return 0;
 
-	return nvkm_object_bind(object, NULL, 0, &chan->engn[engn]);
+	return nvkm_object_bind(object, NULL, 0, nv50_fifo_chan_engine(chan, engine));
 }
 
 static int

drivers/gpu/drm/nouveau/nvkm/engine/fifo/changf100.h

@@ -22,7 +22,7 @@ struct gf100_fifo_chan {
 	struct gf100_fifo_engn {
 		struct nvkm_gpuobj *inst;
 		struct nvkm_vma *vma;
-	} engn[NVKM_SUBDEV_NR];
+	} engn[NVKM_FIFO_ENGN_NR];
 };
 
 extern const struct nvkm_fifo_chan_oclass gf100_fifo_gpfifo_oclass;

drivers/gpu/drm/nouveau/nvkm/engine/fifo/changk104.h

@@ -20,7 +20,7 @@ struct gk104_fifo_chan {
 	struct gk104_fifo_engn {
 		struct nvkm_gpuobj *inst;
 		struct nvkm_vma *vma;
-	} engn[NVKM_SUBDEV_NR];
+	} engn[NVKM_FIFO_ENGN_NR];
 };
 
 extern const struct nvkm_fifo_chan_func gk104_fifo_gpfifo_func;
@@ -30,6 +30,7 @@ int gk104_fifo_gpfifo_new(struct gk104_fifo *, const struct nvkm_oclass *,
 void *gk104_fifo_gpfifo_dtor(struct nvkm_fifo_chan *);
 void gk104_fifo_gpfifo_init(struct nvkm_fifo_chan *);
 void gk104_fifo_gpfifo_fini(struct nvkm_fifo_chan *);
+struct gk104_fifo_engn *gk104_fifo_gpfifo_engine(struct gk104_fifo_chan *, struct nvkm_engine *);
 int gk104_fifo_gpfifo_engine_ctor(struct nvkm_fifo_chan *, struct nvkm_engine *,
 				  struct nvkm_object *);
 void gk104_fifo_gpfifo_engine_dtor(struct nvkm_fifo_chan *,

drivers/gpu/drm/nouveau/nvkm/engine/fifo/channv04.h

@@ -13,7 +13,7 @@ struct nv04_fifo_chan {
 #define NV04_FIFO_ENGN_GR   1
 #define NV04_FIFO_ENGN_MPEG 2
 #define NV04_FIFO_ENGN_DMA  3
-	struct nvkm_gpuobj *engn[NVKM_SUBDEV_NR];
+	struct nvkm_gpuobj *engn[NVKM_FIFO_ENGN_NR];
 };
 
 extern const struct nvkm_fifo_chan_func nv04_fifo_dma_func;

drivers/gpu/drm/nouveau/nvkm/engine/fifo/channv50.c

@@ -42,6 +42,15 @@ nv50_fifo_chan_engine_addr(struct nvkm_engine *engine)
 	}
 }
 
+struct nvkm_gpuobj **
+nv50_fifo_chan_engine(struct nv50_fifo_chan *chan, struct nvkm_engine *engine)
+{
+	int engi = chan->base.fifo->func->engine_id(chan->base.fifo, engine);
+	if (engi >= 0)
+		return &chan->engn[engi];
+	return NULL;
+}
+
 static int
 nv50_fifo_chan_engine_fini(struct nvkm_fifo_chan *base,
 			   struct nvkm_engine *engine, bool suspend)
@@ -103,7 +112,7 @@ nv50_fifo_chan_engine_init(struct nvkm_fifo_chan *base,
 			   struct nvkm_engine *engine)
 {
 	struct nv50_fifo_chan *chan = nv50_fifo_chan(base);
-	struct nvkm_gpuobj *engn = chan->engn[engine->subdev.index];
+	struct nvkm_gpuobj *engn = *nv50_fifo_chan_engine(chan, engine);
 	u64 limit, start;
 	int offset;
 
@@ -130,7 +139,7 @@ nv50_fifo_chan_engine_dtor(struct nvkm_fifo_chan *base,
 			   struct nvkm_engine *engine)
 {
 	struct nv50_fifo_chan *chan = nv50_fifo_chan(base);
-	nvkm_gpuobj_del(&chan->engn[engine->subdev.index]);
+	nvkm_gpuobj_del(nv50_fifo_chan_engine(chan, engine));
 }
 
 static int
@@ -139,12 +148,11 @@ nv50_fifo_chan_engine_ctor(struct nvkm_fifo_chan *base,
 			   struct nvkm_object *object)
 {
 	struct nv50_fifo_chan *chan = nv50_fifo_chan(base);
-	int engn = engine->subdev.index;
 
 	if (nv50_fifo_chan_engine_addr(engine) < 0)
 		return 0;
 
-	return nvkm_object_bind(object, NULL, 0, &chan->engn[engn]);
+	return nvkm_object_bind(object, NULL, 0, nv50_fifo_chan_engine(chan, engine));
 }
 
 void

drivers/gpu/drm/nouveau/nvkm/engine/fifo/channv50.h

@@ -34,13 +34,14 @@ struct nv50_fifo_chan {
 #define G84_FIFO_ENGN_BSP    6
 #define G84_FIFO_ENGN_MSVLD  6
 #define G84_FIFO_ENGN_DMA    7
-	struct nvkm_gpuobj *engn[NVKM_SUBDEV_NR];
+	struct nvkm_gpuobj *engn[NVKM_FIFO_ENGN_NR];
 };
 
 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_fini(struct nvkm_fifo_chan *);
+struct nvkm_gpuobj **nv50_fifo_chan_engine(struct nv50_fifo_chan *, struct nvkm_engine *);
 void nv50_fifo_chan_engine_dtor(struct nvkm_fifo_chan *, struct nvkm_engine *);
 void nv50_fifo_chan_object_dtor(struct nvkm_fifo_chan *, int);
 

drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv40.c

@@ -55,6 +55,15 @@ nv40_fifo_dma_engine(struct nvkm_engine *engine, u32 *reg, u32 *ctx)
 	}
 }
 
+static struct nvkm_gpuobj **
+nv40_fifo_dma_engn(struct nv04_fifo_chan *chan, struct nvkm_engine *engine)
+{
+	int engi = chan->base.fifo->func->engine_id(chan->base.fifo, engine);
+	if (engi >= 0)
+		return &chan->engn[engi];
+	return NULL;
+}
+
 static int
 nv40_fifo_dma_engine_fini(struct nvkm_fifo_chan *base,
 			  struct nvkm_engine *engine, bool suspend)
@@ -99,7 +108,7 @@ nv40_fifo_dma_engine_init(struct nvkm_fifo_chan *base,
 
 	if (!nv40_fifo_dma_engine(engine, &reg, &ctx))
 		return 0;
-	inst = chan->engn[engine->subdev.index]->addr >> 4;
+	inst = (*nv40_fifo_dma_engn(chan, engine))->addr >> 4;
 
 	spin_lock_irqsave(&fifo->base.lock, flags);
 	nvkm_mask(device, 0x002500, 0x00000001, 0x00000000);
@@ -121,7 +130,7 @@ nv40_fifo_dma_engine_dtor(struct nvkm_fifo_chan *base,
 			  struct nvkm_engine *engine)
 {
 	struct nv04_fifo_chan *chan = nv04_fifo_chan(base);
-	nvkm_gpuobj_del(&chan->engn[engine->subdev.index]);
+	nvkm_gpuobj_del(nv40_fifo_dma_engn(chan, engine));
 }
 
 static int
@@ -130,13 +139,12 @@ nv40_fifo_dma_engine_ctor(struct nvkm_fifo_chan *base,
 			  struct nvkm_object *object)
 {
 	struct nv04_fifo_chan *chan = nv04_fifo_chan(base);
-	const int engn = engine->subdev.index;
 	u32 reg, ctx;
 
 	if (!nv40_fifo_dma_engine(engine, &reg, &ctx))
 		return 0;
 
-	return nvkm_object_bind(object, NULL, 0, &chan->engn[engn]);
+	return nvkm_object_bind(object, NULL, 0, nv40_fifo_dma_engn(chan, engine));
 }
 
 static int

drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogf100.c

@@ -66,6 +66,15 @@ gf100_fifo_gpfifo_engine_addr(struct nvkm_engine *engine)
 	}
 }
 
+static struct gf100_fifo_engn *
+gf100_fifo_gpfifo_engine(struct gf100_fifo_chan *chan, struct nvkm_engine *engine)
+{
+	int engi = chan->base.fifo->func->engine_id(chan->base.fifo, engine);
+	if (engi >= 0)
+		return &chan->engn[engi];
+	return NULL;
+}
+
 static int
 gf100_fifo_gpfifo_engine_fini(struct nvkm_fifo_chan *base,
 			      struct nvkm_engine *engine, bool suspend)
@@ -108,13 +117,13 @@ gf100_fifo_gpfifo_engine_init(struct nvkm_fifo_chan *base,
 {
 	const u32 offset = gf100_fifo_gpfifo_engine_addr(engine);
 	struct gf100_fifo_chan *chan = gf100_fifo_chan(base);
+	struct gf100_fifo_engn *engn = gf100_fifo_gpfifo_engine(chan, engine);
 	struct nvkm_gpuobj *inst = chan->base.inst;
 
 	if (offset) {
-		u64 addr = chan->engn[engine->subdev.index].vma->addr;
 		nvkm_kmap(inst);
-		nvkm_wo32(inst, offset + 0x00, lower_32_bits(addr) | 4);
-		nvkm_wo32(inst, offset + 0x04, upper_32_bits(addr));
+		nvkm_wo32(inst, offset + 0x00, lower_32_bits(engn->vma->addr) | 4);
+		nvkm_wo32(inst, offset + 0x04, upper_32_bits(engn->vma->addr));
 		nvkm_done(inst);
 	}
 
@@ -126,8 +135,9 @@ gf100_fifo_gpfifo_engine_dtor(struct nvkm_fifo_chan *base,
 			      struct nvkm_engine *engine)
 {
 	struct gf100_fifo_chan *chan = gf100_fifo_chan(base);
-	nvkm_vmm_put(chan->base.vmm, &chan->engn[engine->subdev.index].vma);
-	nvkm_gpuobj_del(&chan->engn[engine->subdev.index].inst);
+	struct gf100_fifo_engn *engn = gf100_fifo_gpfifo_engine(chan, engine);
+	nvkm_vmm_put(chan->base.vmm, &engn->vma);
+	nvkm_gpuobj_del(&engn->inst);
 }
 
 static int
@@ -136,23 +146,21 @@ gf100_fifo_gpfifo_engine_ctor(struct nvkm_fifo_chan *base,
 			      struct nvkm_object *object)
 {
 	struct gf100_fifo_chan *chan = gf100_fifo_chan(base);
-	int engn = engine->subdev.index;
+	struct gf100_fifo_engn *engn = gf100_fifo_gpfifo_engine(chan, engine);
 	int ret;
 
 	if (!gf100_fifo_gpfifo_engine_addr(engine))
 		return 0;
 
-	ret = nvkm_object_bind(object, NULL, 0, &chan->engn[engn].inst);
+	ret = nvkm_object_bind(object, NULL, 0, &engn->inst);
 	if (ret)
 		return ret;
 
-	ret = nvkm_vmm_get(chan->base.vmm, 12, chan->engn[engn].inst->size,
-			   &chan->engn[engn].vma);
+	ret = nvkm_vmm_get(chan->base.vmm, 12, engn->inst->size, &engn->vma);
 	if (ret)
 		return ret;
 
-	return nvkm_memory_map(chan->engn[engn].inst, 0, chan->base.vmm,
-			       chan->engn[engn].vma, NULL, 0);
+	return nvkm_memory_map(engn->inst, 0, chan->base.vmm, engn->vma, NULL, 0);
 }
 
 static void

drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogk104.c

@@ -94,6 +94,15 @@ gk104_fifo_gpfifo_engine_addr(struct nvkm_engine *engine)
 	}
 }
 
+struct gk104_fifo_engn *
+gk104_fifo_gpfifo_engine(struct gk104_fifo_chan *chan, struct nvkm_engine *engine)
+{
+	int engi = chan->base.fifo->func->engine_id(chan->base.fifo, engine);
+	if (engi >= 0)
+		return &chan->engn[engi];
+	return NULL;
+}
+
 static int
 gk104_fifo_gpfifo_engine_fini(struct nvkm_fifo_chan *base,
 			      struct nvkm_engine *engine, bool suspend)
@@ -126,13 +135,13 @@ gk104_fifo_gpfifo_engine_init(struct nvkm_fifo_chan *base,
 			      struct nvkm_engine *engine)
 {
 	struct gk104_fifo_chan *chan = gk104_fifo_chan(base);
+	struct gk104_fifo_engn *engn = gk104_fifo_gpfifo_engine(chan, engine);
 	struct nvkm_gpuobj *inst = chan->base.inst;
 	u32 offset = gk104_fifo_gpfifo_engine_addr(engine);
 
 	if (offset) {
-		u64   addr = chan->engn[engine->subdev.index].vma->addr;
-		u32 datalo = lower_32_bits(addr) | 0x00000004;
-		u32 datahi = upper_32_bits(addr);
+		u32 datalo = lower_32_bits(engn->vma->addr) | 0x00000004;
+		u32 datahi = upper_32_bits(engn->vma->addr);
 		nvkm_kmap(inst);
 		nvkm_wo32(inst, (offset & 0xffff) + 0x00, datalo);
 		nvkm_wo32(inst, (offset & 0xffff) + 0x04, datahi);
@@ -151,8 +160,9 @@ gk104_fifo_gpfifo_engine_dtor(struct nvkm_fifo_chan *base,
 			      struct nvkm_engine *engine)
 {
 	struct gk104_fifo_chan *chan = gk104_fifo_chan(base);
-	nvkm_vmm_put(chan->base.vmm, &chan->engn[engine->subdev.index].vma);
-	nvkm_gpuobj_del(&chan->engn[engine->subdev.index].inst);
+	struct gk104_fifo_engn *engn = gk104_fifo_gpfifo_engine(chan, engine);
+	nvkm_vmm_put(chan->base.vmm, &engn->vma);
+	nvkm_gpuobj_del(&engn->inst);
 }
 
 int
@@ -161,23 +171,21 @@ gk104_fifo_gpfifo_engine_ctor(struct nvkm_fifo_chan *base,
 			      struct nvkm_object *object)
 {
 	struct gk104_fifo_chan *chan = gk104_fifo_chan(base);
-	int engn = engine->subdev.index;
+	struct gk104_fifo_engn *engn = gk104_fifo_gpfifo_engine(chan, engine);
 	int ret;
 
 	if (!gk104_fifo_gpfifo_engine_addr(engine))
 		return 0;
 
-	ret = nvkm_object_bind(object, NULL, 0, &chan->engn[engn].inst);
+	ret = nvkm_object_bind(object, NULL, 0, &engn->inst);
 	if (ret)
 		return ret;
 
-	ret = nvkm_vmm_get(chan->base.vmm, 12, chan->engn[engn].inst->size,
-			   &chan->engn[engn].vma);
+	ret = nvkm_vmm_get(chan->base.vmm, 12, engn->inst->size, &engn->vma);
 	if (ret)
 		return ret;
 
-	return nvkm_memory_map(chan->engn[engn].inst, 0, chan->base.vmm,
-			       chan->engn[engn].vma, NULL, 0);
+	return nvkm_memory_map(engn->inst, 0, chan->base.vmm, engn->vma, NULL, 0);
 }
 
 void

drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogv100.c

@@ -90,17 +90,16 @@ gv100_fifo_gpfifo_engine_init(struct nvkm_fifo_chan *base,
 			      struct nvkm_engine *engine)
 {
 	struct gk104_fifo_chan *chan = gk104_fifo_chan(base);
+	struct gk104_fifo_engn *engn = gk104_fifo_gpfifo_engine(chan, engine);
 	struct nvkm_gpuobj *inst = chan->base.inst;
-	u64 addr;
 
 	if (engine->subdev.index >= NVKM_ENGINE_CE0 &&
 	    engine->subdev.index <= NVKM_ENGINE_CE_LAST)
 		return 0;
 
-	addr = chan->engn[engine->subdev.index].vma->addr;
 	nvkm_kmap(inst);
-	nvkm_wo32(inst, 0x210, lower_32_bits(addr) | 0x00000004);
-	nvkm_wo32(inst, 0x214, upper_32_bits(addr));
+	nvkm_wo32(inst, 0x210, lower_32_bits(engn->vma->addr) | 0x00000004);
+	nvkm_wo32(inst, 0x214, upper_32_bits(engn->vma->addr));
 	nvkm_done(inst);
 
 	return gv100_fifo_gpfifo_engine_valid(chan, false, true);