drm/nouveau/core/memory: add reference counting

We need to be able to prevent memory from being freed while it's still
mapped in a GPU's address-space.

Will be used by upcoming MMU changes.

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

8 files changed, 15 insertions, 15 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/falcon.c b/drivers/gpu/drm/nouveau/nvkm/engine/falcon.c
index 2e7b4e2105ef..816ccaedfc73 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/falcon.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/falcon.c
@@ -99,7 +99,7 @@ nvkm_falcon_fini(struct nvkm_engine *engine, bool suspend)
 	const u32 base = falcon->addr;
 
 	if (!suspend) {
-		nvkm_memory_del(&falcon->core);
+		nvkm_memory_unref(&falcon->core);
 		if (falcon->external) {
 			vfree(falcon->data.data);
 			vfree(falcon->code.data);
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gf100.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gf100.c
index 14b1a616d26a..24a4c28b32c5 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gf100.c
@@ -642,9 +642,9 @@ gf100_fifo_dtor(struct nvkm_fifo *base)
 {
 	struct gf100_fifo *fifo = gf100_fifo(base);
 	nvkm_vm_put(&fifo->user.bar);
-	nvkm_memory_del(&fifo->user.mem);
-	nvkm_memory_del(&fifo->runlist.mem[0]);
-	nvkm_memory_del(&fifo->runlist.mem[1]);
+	nvkm_memory_unref(&fifo->user.mem);
+	nvkm_memory_unref(&fifo->runlist.mem[0]);
+	nvkm_memory_unref(&fifo->runlist.mem[1]);
 	return fifo;
 }
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c
index 9629416f4947..eddf9f12e9ee 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c
@@ -880,11 +880,11 @@ gk104_fifo_dtor(struct nvkm_fifo *base)
 	int i;
 
 	nvkm_vm_put(&fifo->user.bar);
-	nvkm_memory_del(&fifo->user.mem);
+	nvkm_memory_unref(&fifo->user.mem);
 
 	for (i = 0; i < fifo->runlist_nr; i++) {
-		nvkm_memory_del(&fifo->runlist[i].mem[1]);
-		nvkm_memory_del(&fifo->runlist[i].mem[0]);
+		nvkm_memory_unref(&fifo->runlist[i].mem[1]);
+		nvkm_memory_unref(&fifo->runlist[i].mem[0]);
 	}
 
 	return fifo;
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv50.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv50.c
index 66eb12c2b5ba..fa6e094d8068 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv50.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv50.c
@@ -100,8 +100,8 @@ void *
 nv50_fifo_dtor(struct nvkm_fifo *base)
 {
 	struct nv50_fifo *fifo = nv50_fifo(base);
-	nvkm_memory_del(&fifo->runlist[1]);
-	nvkm_memory_del(&fifo->runlist[0]);
+	nvkm_memory_unref(&fifo->runlist[1]);
+	nvkm_memory_unref(&fifo->runlist[0]);
 	return fifo;
 }
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgf100.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgf100.c
index bc77eea351a5..ce69ec8b13ad 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgf100.c
@@ -1380,7 +1380,7 @@ gf100_grctx_generate(struct gf100_gr *gr)
 	}
 
 done:
-	nvkm_memory_del(&chan);
+	nvkm_memory_unref(&chan);
 	return ret;
 }
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
index 0c4ca0fa48cc..4fc4deb2db4b 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
@@ -354,14 +354,14 @@ gf100_gr_chan_dtor(struct nvkm_object *object)
 			nvkm_vm_unmap(&chan->data[i].vma);
 			nvkm_vm_put(&chan->data[i].vma);
 		}
-		nvkm_memory_del(&chan->data[i].mem);
+		nvkm_memory_unref(&chan->data[i].mem);
 	}
 
 	if (chan->mmio_vma.node) {
 		nvkm_vm_unmap(&chan->mmio_vma);
 		nvkm_vm_put(&chan->mmio_vma);
 	}
-	nvkm_memory_del(&chan->mmio);
+	nvkm_memory_unref(&chan->mmio);
 	return chan;
 }
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv20.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv20.c
index d1dc92999dc0..d6840dc81a29 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv20.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv20.c
@@ -59,7 +59,7 @@ void *
 nv20_gr_chan_dtor(struct nvkm_object *object)
 {
 	struct nv20_gr_chan *chan = nv20_gr_chan(object);
-	nvkm_memory_del(&chan->inst);
+	nvkm_memory_unref(&chan->inst);
 	return chan;
 }
 
@@ -323,7 +323,7 @@ void *
 nv20_gr_dtor(struct nvkm_gr *base)
 {
 	struct nv20_gr *gr = nv20_gr(base);
-	nvkm_memory_del(&gr->ctxtab);
+	nvkm_memory_unref(&gr->ctxtab);
 	return gr;
 }
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/xtensa.c b/drivers/gpu/drm/nouveau/nvkm/engine/xtensa.c
index 06bdb67a0205..70549381e082 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/xtensa.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/xtensa.c
@@ -86,7 +86,7 @@ nvkm_xtensa_fini(struct nvkm_engine *engine, bool suspend)
 	nvkm_wr32(device, base + 0xd94, 0); /* FIFO_CTRL */
 
 	if (!suspend)
-		nvkm_memory_del(&xtensa->gpu_fw);
+		nvkm_memory_unref(&xtensa->gpu_fw);
 	return 0;
 }