drm/nouveau/fifo: add chan start()/stop()

- nvkm_chan_error() built on top, stops channel and sends 'killed' event
- removes an odd double-bashing of channel enable regs on kepler and up
- pokes doorbell on turing and up, after enabling channel

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

1 files changed, 0 insertions, 7 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogk104.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogk104.c
index c2b5eaa9cdea..1847b1b7af8b 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogk104.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogk104.c
@@ -199,12 +199,9 @@ gk104_fifo_gpfifo_fini(struct nvkm_fifo_chan *base)
 {
 	struct gk104_fifo_chan *chan = gk104_fifo_chan(base);
 	struct gk104_fifo *fifo = chan->fifo;
-	struct nvkm_device *device = fifo->base.engine.subdev.device;
-	u32 coff = chan->base.chid * 8;
 
 	if (!list_empty(&chan->head)) {
 		gk104_fifo_runlist_remove(fifo, chan);
-		nvkm_mask(device, 0x800004 + coff, 0x00000800, 0x00000800);
 		gk104_fifo_gpfifo_kick(chan);
 		gk104_fifo_runlist_update(fifo, chan->runl);
 	}
@@ -215,14 +212,10 @@ gk104_fifo_gpfifo_init(struct nvkm_fifo_chan *base)
 {
 	struct gk104_fifo_chan *chan = gk104_fifo_chan(base);
 	struct gk104_fifo *fifo = chan->fifo;
-	struct nvkm_device *device = fifo->base.engine.subdev.device;
-	u32 coff = chan->base.chid * 8;
 
 	if (list_empty(&chan->head) && !chan->killed) {
 		gk104_fifo_runlist_insert(fifo, chan);
-		nvkm_mask(device, 0x800004 + coff, 0x00000400, 0x00000400);
 		gk104_fifo_runlist_update(fifo, chan->runl);
-		nvkm_mask(device, 0x800004 + coff, 0x00000400, 0x00000400);
 	}
 }