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| author | Paulo Zanoni <paulo.r.zanoni@intel.com> | 2015-07-14 16:29:10 -0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-08-05 09:59:44 +0200 |
| commit | 6f4551fe8e7f3561b97b7f74d8f4af08db01de6f (patch) | |
| tree | efe47654265712bb433f0cd59ae41ef2a4e0f905 | |
| parent | 5d8a0d0b44c207690adda723b8d60158c18fec8a (diff) | |
| download | linux-6f4551fe8e7f3561b97b7f74d8f4af08db01de6f.tar.bz2 | |
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 <paulo.r.zanoni@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
| -rw-r--r-- | drivers/gpu/drm/i915/intel_drv.h | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_fbc.c | 13 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_frontbuffer.c | 2 |
3 files changed, 9 insertions, 8 deletions
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 3b00d00c0bc0..817a4169d3b8 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -1239,7 +1239,7 @@ void intel_fbc_invalidate(struct drm_i915_private *dev_priv, unsigned int frontbuffer_bits, enum fb_op_origin origin); void intel_fbc_flush(struct drm_i915_private *dev_priv, - unsigned int frontbuffer_bits); + unsigned int frontbuffer_bits, enum fb_op_origin origin); const char *intel_no_fbc_reason_str(enum no_fbc_reason reason); void intel_fbc_cleanup_cfb(struct drm_i915_private *dev_priv); 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); } diff --git a/drivers/gpu/drm/i915/intel_frontbuffer.c b/drivers/gpu/drm/i915/intel_frontbuffer.c index 777b1d3ccd41..ac85357010b4 100644 --- a/drivers/gpu/drm/i915/intel_frontbuffer.c +++ b/drivers/gpu/drm/i915/intel_frontbuffer.c @@ -129,7 +129,7 @@ static void intel_frontbuffer_flush(struct drm_device *dev, intel_edp_drrs_flush(dev, frontbuffer_bits); intel_psr_flush(dev, frontbuffer_bits, origin); - intel_fbc_flush(dev_priv, frontbuffer_bits); + intel_fbc_flush(dev_priv, frontbuffer_bits, origin); } /** |