drm/nouveau/mmu: handle instance block setup

We previously required each VMM user to allocate their own page directory
and fill in the instance block themselves.

It makes more sense to handle this in a common location.

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

1 files changed, 3 insertions, 16 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogf100.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogf100.c
index 6343e0c84d96..695d0721b1ad 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogf100.c
@@ -200,8 +200,8 @@ static void *
 gf100_fifo_gpfifo_dtor(struct nvkm_fifo_chan *base)
 {
 	struct gf100_fifo_chan *chan = gf100_fifo_chan(base);
-	nvkm_vm_ref(NULL, &chan->vm, chan->pgd);
-	nvkm_gpuobj_del(&chan->pgd);
+	if (chan->base.inst)
+		nvkm_vm_ref(NULL, &chan->vm, chan->base.inst->memory);
 	return chan;
 }
 
@@ -225,7 +225,6 @@ gf100_fifo_gpfifo_new(struct nvkm_fifo *base, const struct nvkm_oclass *oclass,
 		struct fermi_channel_gpfifo_v0 v0;
 	} *args = data;
 	struct gf100_fifo *fifo = gf100_fifo(base);
-	struct nvkm_device *device = fifo->base.engine.subdev.device;
 	struct nvkm_object *parent = oclass->parent;
 	struct gf100_fifo_chan *chan;
 	u64 usermem, ioffset, ilength;
@@ -263,19 +262,7 @@ gf100_fifo_gpfifo_new(struct nvkm_fifo *base, const struct nvkm_oclass *oclass,
 
 	args->v0.chid = chan->base.chid;
 
-	/* page directory */
-	ret = nvkm_gpuobj_new(device, 0x10000, 0x1000, false, NULL, &chan->pgd);
-	if (ret)
-		return ret;
-
-	nvkm_kmap(chan->base.inst);
-	nvkm_wo32(chan->base.inst, 0x0200, lower_32_bits(chan->pgd->addr));
-	nvkm_wo32(chan->base.inst, 0x0204, upper_32_bits(chan->pgd->addr));
-	nvkm_wo32(chan->base.inst, 0x0208, 0xffffffff);
-	nvkm_wo32(chan->base.inst, 0x020c, 0x000000ff);
-	nvkm_done(chan->base.inst);
-
-	ret = nvkm_vm_ref(chan->base.vm, &chan->vm, chan->pgd);
+	ret = nvkm_vm_ref(chan->base.vm, &chan->vm, chan->base.inst->memory);
 	if (ret)
 		return ret;