drm/i915: Limit FBC flush to post batch flush

Don't issue the FBC nuke/cache clean command when invalidate_domains!=0.
That would indicate that we're not being called for the post-batch
flush.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index c2f09d4..e26e18a 100644 (file)
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -354,7 +354,7 @@ gen7_render_ring_flush(struct intel_ring_buffer *ring,
        intel_ring_emit(ring, 0);
        intel_ring_advance(ring);
 
-       if (flush_domains)
+       if (!invalidate_domains && flush_domains)
                return gen7_ring_fbc_flush(ring, FBC_REND_NUKE);
 
        return 0;
@@ -1838,7 +1838,7 @@ static int gen6_ring_flush(struct intel_ring_buffer *ring,
        }
        intel_ring_advance(ring);
 
-       if (IS_GEN7(dev) && flush)
+       if (IS_GEN7(dev) && !invalidate && flush)
                return gen7_ring_fbc_flush(ring, FBC_REND_CACHE_CLEAN);
 
        return 0;