From 6f4551fe8e7f3561b97b7f74d8f4af08db01de6f Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Tue, 14 Jul 2015 16:29:10 -0300 Subject: drm/i915: fix FBC frontbuffer tracking flushing code Due to the way busy_bits was handled, we were not doing any flushes if we didn't previously get an invalidate. Since it's possible to get flushes without an invalidate first, remove the busy_bits early return. So now that we don't have the busy_bits guard anymore we'll need the origin check for the GTT tracking (we were not doing anything on GTT flushes due to the GTT check at invalidate()). As a last detail, since we can get multiple consecutive flushes, disable FBC before updating it, otherwise intel_fbc_update() will just keep FBC enabled instead of restarting it. Notice that this does not fix any of the current IGT tests due to the fact that we still have a few intel_fbc() calls at points where we also have the frontbuffer tracking calls: we didn't fully convert to frontbuffer tracking yet. Once we remove those calls and start relying only on the frontbuffer tracking infrastructure we'll need this patch. Signed-off-by: Paulo Zanoni Reviewed-by: Rodrigo Vivi Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_fbc.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) (limited to 'drivers/gpu/drm/i915/intel_fbc.c') diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c index c271af767981..1f97fb548c2a 100644 --- a/drivers/gpu/drm/i915/intel_fbc.c +++ b/drivers/gpu/drm/i915/intel_fbc.c @@ -884,22 +884,23 @@ void intel_fbc_invalidate(struct drm_i915_private *dev_priv, } void intel_fbc_flush(struct drm_i915_private *dev_priv, - unsigned int frontbuffer_bits) + unsigned int frontbuffer_bits, enum fb_op_origin origin) { if (!dev_priv->fbc.enable_fbc) return; - mutex_lock(&dev_priv->fbc.lock); + if (origin == ORIGIN_GTT) + return; - if (!dev_priv->fbc.busy_bits) - goto out; + mutex_lock(&dev_priv->fbc.lock); dev_priv->fbc.busy_bits &= ~frontbuffer_bits; - if (!dev_priv->fbc.busy_bits) + if (!dev_priv->fbc.busy_bits) { + __intel_fbc_disable(dev_priv); __intel_fbc_update(dev_priv); + } -out: mutex_unlock(&dev_priv->fbc.lock); } -- cgit v1.2.3