From be7276281694145e7c947b91a1c8e6e347de666c Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Wed, 25 Jun 2008 16:45:41 +1000 Subject: [PATCH] nv50: when destroying a channel make sure it's not still current on PFIFO We won't get a PFIFO context switch when the same channel ID is recreated if the hw still thinks the channel is already active, which causes fun issues. Should allow X to be stopped and started without tearing down the entire card state in lastclose(). --- shared-core/nv50_fifo.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/shared-core/nv50_fifo.c b/shared-core/nv50_fifo.c index edf4edbf..d6810666 100644 --- a/shared-core/nv50_fifo.c +++ b/shared-core/nv50_fifo.c @@ -289,6 +289,7 @@ void nv50_fifo_destroy_context(struct nouveau_channel *chan) { struct drm_device *dev = chan->dev; + struct drm_nouveau_private *dev_priv = dev->dev_private; DRM_DEBUG("ch%d\n", chan->id); @@ -298,6 +299,9 @@ nv50_fifo_destroy_context(struct nouveau_channel *chan) if (chan->id == 0) nv50_fifo_channel_disable(dev, 127, 0); + if ((NV_READ(NV03_PFIFO_CACHE1_PUSH1) & 0xffff) == chan->id) + NV_WRITE(NV03_PFIFO_CACHE1_PUSH1, 127); + nouveau_gpuobj_ref_del(dev, &chan->ramfc); }