conf: Add debugging flush options

Make the following options available via xorg.conf:
  Section "Driver"
    Option "DebugFlushBatches" "1" # Flush the batch buffer after every
                                   # single operation;

    Option "DebugFlushCaches" "1" # Include a MI_FLUSH at the end of every
                                  # batch buffer to force data to be
                                  # flushed out of cache and into memory
                                  # before the completion of the batch.

    Option "DebugWait" "1" # Wait for the completion of every batch buffer
                           # before continuing, i.e. perform synchronous
                           # rendering.
  EndSection

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/i915_video.c b/src/i915_video.c
index 34ad8f97..e54bd9b4 100644
--- a/src/i915_video.c
+++ b/src/i915_video.c
@@ -460,4 +460,6 @@ I915DisplayVideoTextured(ScrnInfoPtr scrn,
 
 		intel_batch_end_atomic(scrn);
 	}
+
+	i830_debug_flush(scrn);
 }