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/* $XFree86: xc/lib/GL/mesa/src/drv/ffb/ffb_lock.h,v 1.2 2002/02/22 21:32:59 dawes Exp $ */
#ifndef _FFB_LOCK_H
#define _FFB_LOCK_H
#include "ffb_context.h"
extern void ffbXMesaUpdateState(ffbContextPtr fmesa);
#define FFB_UPDATE_STATE(fmesa) ffbXMesaUpdateState(fmesa)
/* Lock the hardware and validate our state. This hardware can only ever
* exist on SPARC platforms. Don't bother building the real LOCK_HARDWARE and
* UNLOCK_HARDWARE code on non-SPARC platforms. The only reason the driver
* gets built on non-SPARC is to catch build breakages earlier.
*/
#if !defined(__sparc__)
#define LOCK_HARDWARE(fmesa)
#define UNLOCK_HARDWARE(fmesa)
#else
#define LOCK_HARDWARE(fmesa) \
do { \
DRM_CAS_RESULT(__ret); \
DRM_CAS(fmesa->driHwLock, fmesa->hHWContext, \
(DRM_LOCK_HELD | fmesa->hHWContext), __ret);\
if (__ret) { \
drmGetLock(fmesa->driFd, fmesa->hHWContext, 0); \
FFB_UPDATE_STATE(fmesa); \
} \
} while (0)
/* Unlock the hardware. */
#define UNLOCK_HARDWARE(fmesa) \
DRM_UNLOCK(fmesa->driFd, fmesa->driHwLock, fmesa->hHWContext);
#endif
#endif /* !(_FFB_LOCK_H) */
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