Initial revision

1 files changed, 69 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/nouveau/nouveau_lock.h b/src/mesa/drivers/dri/nouveau/nouveau_lock.h
new file mode 100644
index 0000000000..38bb001425
--- /dev/null
+++ b/src/mesa/drivers/dri/nouveau/nouveau_lock.h
@@ -0,0 +1,69 @@
+/**************************************************************************
+
+Copyright 2006 Stephane Marchesin
+All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+on the rights to use, copy, modify, merge, publish, distribute, sub
+license, and/or sell copies of the Software, and to permit persons to whom
+the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice (including the next
+paragraph) shall be included in all copies or substantial portions of the
+Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ERIC ANHOLT OR SILICON INTEGRATED SYSTEMS CORP BE LIABLE FOR ANY CLAIM,
+DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+**************************************************************************/
+
+
+#ifndef __NOUVEAU_LOCK_H__
+#define __NOUVEAU_LOCK_H__
+
+#include "nouveau_context.h"
+
+extern void nouveauGetLock( nouveauContextPtr nmesa, GLuint flags );
+
+/*
+ * !!! We may want to separate locks from locks with validation.  This
+ * could be used to improve performance for those things commands that
+ * do not do any drawing !!!
+ */
+
+/* Lock the hardware and validate our state.
+ */
+#define LOCK_HARDWARE( nmesa )						\
+   do {									\
+      char __ret = 0;							\
+      DEBUG_CHECK_LOCK();						\
+      DRM_CAS( nmesa->driHwLock, nmesa->hHWContext,			\
+	       (DRM_LOCK_HELD | nmesa->hHWContext), __ret );		\
+      if ( __ret )							\
+	 nouveauGetLock( nmesa, 0 );					\
+      DEBUG_LOCK();							\
+   } while (0)
+
+/* Unlock the hardware.
+ */
+#define UNLOCK_HARDWARE( nmesa )					\
+   do {									\
+      DRM_UNLOCK( nmesa->driFd,						\
+		  nmesa->driHwLock,					\
+		  nmesa->hHWContext );					\
+      DEBUG_RESET();							\
+   } while (0)
+
+#define DEBUG_LOCK()
+#define DEBUG_RESET()
+#define DEBUG_CHECK_LOCK()
+
+
+#endif /* __NOUVEAU_LOCK_H__ */