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, 9 insertions, 7 deletions

diff --git a/src/i830.h b/src/i830.h
index 2d7fc5ba..3143e5d2 100644
--- a/src/i830.h
+++ b/src/i830.h
@@ -295,8 +295,16 @@ typedef struct intel_screen_private {
 	 * User option to print acceleration fallback info to the server log.
 	 */
 	Bool fallback_debug;
+	unsigned debug_flush;
 } intel_screen_private;
 
+enum {
+	DEBUG_FLUSH_BATCHES = 0x1,
+	DEBUG_FLUSH_CACHES = 0x2,
+	DEBUG_FLUSH_WAIT = 0x4,
+};
+
+
 static inline intel_screen_private *
 intel_get_screen_private(ScrnInfoPtr scrn)
 {
@@ -493,13 +501,7 @@ enum {
 	INTEL_CREATE_PIXMAP_TILING_Y,
 };
 
-#if (ALWAYS_FLUSH | ALWAYS_SYNC)
-void i830_debug_sync(ScrnInfoPtr scrn);
-#else
-static inline void i830_debug_sync(ScrnInfoPtr scrn)
-{
-}
-#endif
+void i830_debug_flush(ScrnInfoPtr scrn);
 
 static inline PixmapPtr get_drawable_pixmap(DrawablePtr drawable)
 {