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>

3 files changed, 8 insertions, 8 deletions

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;
 }