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Diffstat (limited to 'src/mesa/drivers/dri/tdfx/tdfx_lock.h')
-rw-r--r--src/mesa/drivers/dri/tdfx/tdfx_lock.h144
1 files changed, 144 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/tdfx/tdfx_lock.h b/src/mesa/drivers/dri/tdfx/tdfx_lock.h
new file mode 100644
index 00000000000..616e65b2a15
--- /dev/null
+++ b/src/mesa/drivers/dri/tdfx/tdfx_lock.h
@@ -0,0 +1,144 @@
+/* -*- mode: c; c-basic-offset: 3 -*-
+ *
+ * Copyright 2000 VA Linux Systems Inc., Fremont, California.
+ *
+ * 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
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * 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 NONINFRINGEMENT. IN NO EVENT SHALL
+ * VA LINUX SYSTEMS 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.
+ */
+/* $XFree86: xc/lib/GL/mesa/src/drv/tdfx/tdfx_lock.h,v 1.3 2002/02/22 21:45:03 dawes Exp $ */
+
+/*
+ * Original rewrite:
+ * Gareth Hughes <gareth@valinux.com>, 29 Sep - 1 Oct 2000
+ *
+ * Authors:
+ * Gareth Hughes <gareth@valinux.com>
+ *
+ */
+
+#ifndef __TDFX_LOCK_H__
+#define __TDFX_LOCK_H__
+
+/* You can turn this on to find locking conflicts.
+ */
+#define DEBUG_LOCKING 0
+
+#if DEBUG_LOCKING
+extern char *prevLockFile;
+extern int prevLockLine;
+
+#define DEBUG_LOCK() \
+ do { \
+ prevLockFile = (__FILE__); \
+ prevLockLine = (__LINE__); \
+ } while (0)
+
+#define DEBUG_RESET() \
+ do { \
+ prevLockFile = 0; \
+ prevLockLine = 0; \
+ } while (0)
+
+#define DEBUG_CHECK_LOCK() \
+ do { \
+ if ( prevLockFile ) { \
+ fprintf( stderr, \
+ "LOCK SET!\n\tPrevious %s:%d\n\tCurrent: %s:%d\n", \
+ prevLockFile, prevLockLine, __FILE__, __LINE__ ); \
+ exit( 1 ); \
+ } \
+ } while (0)
+
+#else
+
+#define DEBUG_LOCK()
+#define DEBUG_RESET()
+#define DEBUG_CHECK_LOCK()
+
+#endif /* DEBUG_LOCKING */
+
+
+extern void tdfxGetLock( tdfxContextPtr fxMesa );
+
+
+/* !!! 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 !!! */
+
+#define DRM_LIGHT_LOCK_RETURN(fd,lock,context,__ret) \
+ do { \
+ DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret); \
+ if (__ret) drmGetLock(fd,context,0); \
+ } while(0)
+
+#define LOCK_HARDWARE( fxMesa ) \
+ do { \
+ char __ret = 0; \
+ \
+ DEBUG_CHECK_LOCK(); \
+ DRM_CAS( fxMesa->driHwLock, fxMesa->hHWContext, \
+ DRM_LOCK_HELD | fxMesa->hHWContext, __ret ); \
+ if ( __ret ) { \
+ tdfxGetLock( fxMesa ); \
+ } \
+ DEBUG_LOCK(); \
+ } while (0)
+
+/* Unlock the hardware using the global current context */
+#define UNLOCK_HARDWARE( fxMesa ) \
+ do { \
+ DRM_UNLOCK( fxMesa->driFd, fxMesa->driHwLock, fxMesa->hHWContext ); \
+ DEBUG_RESET(); \
+ } while (0)
+
+/*
+ * This pair of macros makes a loop over the drawing operations
+ * so it is not self contained and doesn't have the nice single
+ * statement semantics of most macros.
+ */
+#define BEGIN_CLIP_LOOP(fxMesa) \
+ do { \
+ LOCK_HARDWARE( fxMesa ); \
+ BEGIN_CLIP_LOOP_LOCKED( fxMesa )
+
+#define BEGIN_CLIP_LOOP_LOCKED(fxMesa) \
+ do { \
+ int _nc = fxMesa->numClipRects; \
+ while (_nc--) { \
+ if (fxMesa->numClipRects > 1) { \
+ int _height = fxMesa->screen_height; \
+ fxMesa->Glide.grClipWindow(fxMesa->pClipRects[_nc].x1, \
+ _height - fxMesa->pClipRects[_nc].y2, \
+ fxMesa->pClipRects[_nc].x2, \
+ _height - fxMesa->pClipRects[_nc].y1); \
+ }
+
+
+#define END_CLIP_LOOP_LOCKED( fxMesa ) \
+ } \
+ } while (0)
+
+#define END_CLIP_LOOP( fxMesa ) \
+ END_CLIP_LOOP_LOCKED( fxMesa ); \
+ UNLOCK_HARDWARE( fxMesa ); \
+ } while (0)
+
+#endif /* __TDFX_LOCK_H__ */