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/* -*- 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.
*/
/*
* 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__ */
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