drm/nouveau/fifo: private mutex

nvkm_subdev.mutex is going away.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>

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

@@ -40,6 +40,7 @@ struct nvkm_fifo {
 	int nr;
 	struct list_head chan;
 	spinlock_t lock;
+	struct mutex mutex;
 
 	struct nvkm_event uevent; /* async user trigger */
 	struct nvkm_event cevent; /* channel creation event */

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

@@ -334,6 +334,7 @@ nvkm_fifo_dtor(struct nvkm_engine *engine)
 	nvkm_event_fini(&fifo->kevent);
 	nvkm_event_fini(&fifo->cevent);
 	nvkm_event_fini(&fifo->uevent);
+	mutex_destroy(&fifo->mutex);
 	return data;
 }
 
@@ -358,6 +359,7 @@ nvkm_fifo_ctor(const struct nvkm_fifo_func *func, struct nvkm_device *device,
 	fifo->func = func;
 	INIT_LIST_HEAD(&fifo->chan);
 	spin_lock_init(&fifo->lock);
+	mutex_init(&fifo->mutex);
 
 	if (WARN_ON(fifo->nr > NVKM_FIFO_CHID_NR))
 		fifo->nr = NVKM_FIFO_CHID_NR;

drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv04.c

@@ -38,9 +38,9 @@ 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.engine.subdev.mutex);
+	mutex_lock(&chan->fifo->base.mutex);
 	nvkm_ramht_remove(imem->ramht, cookie);
-	mutex_unlock(&chan->fifo->base.engine.subdev.mutex);
+	mutex_unlock(&chan->fifo->base.mutex);
 }
 
 static int
@@ -63,10 +63,10 @@ nv04_fifo_dma_object_ctor(struct nvkm_fifo_chan *base,
 		return -EINVAL;
 	}
 
-	mutex_lock(&chan->fifo->base.engine.subdev.mutex);
+	mutex_lock(&chan->fifo->base.mutex);
 	hash = nvkm_ramht_insert(imem->ramht, object, chan->base.chid, 4,
 				 handle, context);
-	mutex_unlock(&chan->fifo->base.engine.subdev.mutex);
+	mutex_unlock(&chan->fifo->base.mutex);
 	return hash;
 }
 

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

@@ -159,10 +159,10 @@ nv40_fifo_dma_object_ctor(struct nvkm_fifo_chan *base,
 		return -EINVAL;
 	}
 
-	mutex_lock(&chan->fifo->base.engine.subdev.mutex);
+	mutex_lock(&chan->fifo->base.mutex);
 	hash = nvkm_ramht_insert(imem->ramht, object, chan->base.chid, 4,
 				 handle, context);
-	mutex_unlock(&chan->fifo->base.engine.subdev.mutex);
+	mutex_unlock(&chan->fifo->base.mutex);
 	return hash;
 }
 

drivers/gpu/drm/nouveau/nvkm/engine/fifo/gf100.c

@@ -57,7 +57,7 @@ gf100_fifo_runlist_commit(struct gf100_fifo *fifo)
 	int nr = 0;
 	int target;
 
-	mutex_lock(&subdev->mutex);
+	mutex_lock(&fifo->base.mutex);
 	cur = fifo->runlist.mem[fifo->runlist.active];
 	fifo->runlist.active = !fifo->runlist.active;
 
@@ -73,7 +73,7 @@ gf100_fifo_runlist_commit(struct gf100_fifo *fifo)
 	case NVKM_MEM_TARGET_VRAM: target = 0; break;
 	case NVKM_MEM_TARGET_NCOH: target = 3; break;
 	default:
-		mutex_unlock(&subdev->mutex);
+		mutex_unlock(&fifo->base.mutex);
 		WARN_ON(1);
 		return;
 	}
@@ -86,23 +86,23 @@ gf100_fifo_runlist_commit(struct gf100_fifo *fifo)
 			       !(nvkm_rd32(device, 0x00227c) & 0x00100000),
 			       msecs_to_jiffies(2000)) == 0)
 		nvkm_error(subdev, "runlist update timeout\n");
-	mutex_unlock(&subdev->mutex);
+	mutex_unlock(&fifo->base.mutex);
 }
 
 void
 gf100_fifo_runlist_remove(struct gf100_fifo *fifo, struct gf100_fifo_chan *chan)
 {
-	mutex_lock(&fifo->base.engine.subdev.mutex);
+	mutex_lock(&fifo->base.mutex);
 	list_del_init(&chan->head);
-	mutex_unlock(&fifo->base.engine.subdev.mutex);
+	mutex_unlock(&fifo->base.mutex);
 }
 
 void
 gf100_fifo_runlist_insert(struct gf100_fifo *fifo, struct gf100_fifo_chan *chan)
 {
-	mutex_lock(&fifo->base.engine.subdev.mutex);
+	mutex_lock(&fifo->base.mutex);
 	list_add_tail(&chan->head, &fifo->chan);
-	mutex_unlock(&fifo->base.engine.subdev.mutex);
+	mutex_unlock(&fifo->base.mutex);
 }
 
 static inline int

drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c

@@ -168,12 +168,11 @@ gk104_fifo_runlist_update(struct gk104_fifo *fifo, int runl)
 {
 	const struct gk104_fifo_runlist_func *func = fifo->func->runlist;
 	struct gk104_fifo_chan *chan;
-	struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
 	struct nvkm_memory *mem;
 	struct nvkm_fifo_cgrp *cgrp;
 	int nr = 0;
 
-	mutex_lock(&subdev->mutex);
+	mutex_lock(&fifo->base.mutex);
 	mem = fifo->runlist[runl].mem[fifo->runlist[runl].next];
 	fifo->runlist[runl].next = !fifo->runlist[runl].next;
 
@@ -191,27 +190,27 @@ gk104_fifo_runlist_update(struct gk104_fifo *fifo, int runl)
 	nvkm_done(mem);
 
 	func->commit(fifo, runl, mem, nr);
-	mutex_unlock(&subdev->mutex);
+	mutex_unlock(&fifo->base.mutex);
 }
 
 void
 gk104_fifo_runlist_remove(struct gk104_fifo *fifo, struct gk104_fifo_chan *chan)
 {
 	struct nvkm_fifo_cgrp *cgrp = chan->cgrp;
-	mutex_lock(&fifo->base.engine.subdev.mutex);
+	mutex_lock(&fifo->base.mutex);
 	if (!list_empty(&chan->head)) {
 		list_del_init(&chan->head);
 		if (cgrp && !--cgrp->chan_nr)
 			list_del_init(&cgrp->head);
 	}
-	mutex_unlock(&fifo->base.engine.subdev.mutex);
+	mutex_unlock(&fifo->base.mutex);
 }
 
 void
 gk104_fifo_runlist_insert(struct gk104_fifo *fifo, struct gk104_fifo_chan *chan)
 {
 	struct nvkm_fifo_cgrp *cgrp = chan->cgrp;
-	mutex_lock(&fifo->base.engine.subdev.mutex);
+	mutex_lock(&fifo->base.mutex);
 	if (cgrp) {
 		if (!cgrp->chan_nr++)
 			list_add_tail(&cgrp->head, &fifo->runlist[chan->runl].cgrp);
@@ -219,7 +218,7 @@ gk104_fifo_runlist_insert(struct gk104_fifo *fifo, struct gk104_fifo_chan *chan)
 	} else {
 		list_add_tail(&chan->head, &fifo->runlist[chan->runl].chan);
 	}
-	mutex_unlock(&fifo->base.engine.subdev.mutex);
+	mutex_unlock(&fifo->base.mutex);
 }
 
 void

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

@@ -77,7 +77,7 @@ gf100_fifo_gpfifo_engine_fini(struct nvkm_fifo_chan *base,
 	struct nvkm_gpuobj *inst = chan->base.inst;
 	int ret = 0;
 
-	mutex_lock(&subdev->mutex);
+	mutex_lock(&chan->fifo->base.mutex);
 	nvkm_wr32(device, 0x002634, chan->base.chid);
 	if (nvkm_msec(device, 2000,
 		if (nvkm_rd32(device, 0x002634) == chan->base.chid)
@@ -87,7 +87,7 @@ gf100_fifo_gpfifo_engine_fini(struct nvkm_fifo_chan *base,
 			   chan->base.chid, chan->base.object.client->name);
 		ret = -ETIMEDOUT;
 	}
-	mutex_unlock(&subdev->mutex);
+	mutex_unlock(&chan->fifo->base.mutex);
 
 	if (ret && suspend)
 		return ret;

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

@@ -65,9 +65,9 @@ int
 gk104_fifo_gpfifo_kick(struct gk104_fifo_chan *chan)
 {
 	int ret;
-	mutex_lock(&chan->base.fifo->engine.subdev.mutex);
+	mutex_lock(&chan->base.fifo->mutex);
 	ret = gk104_fifo_gpfifo_kick_locked(chan);
-	mutex_unlock(&chan->base.fifo->engine.subdev.mutex);
+	mutex_unlock(&chan->base.fifo->mutex);
 	return ret;
 }
 

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

@@ -44,7 +44,7 @@ gv100_fifo_gpfifo_engine_valid(struct gk104_fifo_chan *chan, bool ce, bool valid
 	int ret;
 
 	/* Block runlist to prevent the channel from being rescheduled. */
-	mutex_lock(&subdev->mutex);
+	mutex_lock(&chan->fifo->base.mutex);
 	nvkm_mask(device, 0x002630, BIT(chan->runl), BIT(chan->runl));
 
 	/* Preempt the channel. */
@@ -58,7 +58,7 @@ gv100_fifo_gpfifo_engine_valid(struct gk104_fifo_chan *chan, bool ce, bool valid
 
 	/* Resume runlist. */
 	nvkm_mask(device, 0x002630, BIT(chan->runl), 0);
-	mutex_unlock(&subdev->mutex);
+	mutex_unlock(&chan->fifo->base.mutex);
 	return ret;
 }
 

drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv50.c

@@ -51,9 +51,9 @@ nv50_fifo_runlist_update_locked(struct nv50_fifo *fifo)
 void
 nv50_fifo_runlist_update(struct nv50_fifo *fifo)
 {
-	mutex_lock(&fifo->base.engine.subdev.mutex);
+	mutex_lock(&fifo->base.mutex);
 	nv50_fifo_runlist_update_locked(fifo);
-	mutex_unlock(&fifo->base.engine.subdev.mutex);
+	mutex_unlock(&fifo->base.mutex);
 }
 
 int