drm/nvc0-/disp: reimplement flip completion method as fifo method
Removes need for M2MF subchannel usage on NVC0+.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c
index 35acc92..ab44727 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.c
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -438,15 +438,19 @@
goto fail;
/* Emit the pageflip */
- ret = RING_SPACE(chan, 2);
+ ret = RING_SPACE(chan, 3);
if (ret)
goto fail;
- if (dev_priv->card_type < NV_C0)
+ if (dev_priv->card_type < NV_C0) {
BEGIN_RING(chan, NvSubSw, NV_SW_PAGE_FLIP, 1);
- else
- BEGIN_NVC0(chan, 2, NvSubM2MF, 0x0500, 1);
- OUT_RING (chan, 0);
+ OUT_RING (chan, 0x00000000);
+ OUT_RING (chan, 0x00000000);
+ } else {
+ BEGIN_NVC0(chan, 2, 0, NV10_SUBCHAN_REF_CNT, 1);
+ OUT_RING (chan, ++chan->fence.sequence);
+ BEGIN_NVC0(chan, 8, 0, NVSW_SUBCHAN_PAGE_FLIP, 0x0000);
+ }
FIRE_RING (chan);
ret = nouveau_fence_new(chan, pfence, true);
