| /************************************************************************** |
| |
| Copyright 2000, 2001 ATI Technologies Inc., Ontario, Canada, and |
| VA Linux Systems Inc., Fremont, California. |
| Copyright (C) The Weather Channel, Inc. 2002. All Rights Reserved. |
| |
| The Weather Channel (TM) funded Tungsten Graphics to develop the |
| initial release of the Radeon 8500 driver under the XFree86 license. |
| This notice must be preserved. |
| |
| 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 THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS 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. |
| |
| **************************************************************************/ |
| |
| /* |
| * Authors: |
| * Gareth Hughes <gareth@valinux.com> |
| * Keith Whitwell <keith@tungstengraphics.com> |
| * Kevin E. Martin <martin@valinux.com> |
| */ |
| |
| #ifndef __RADEON_LOCK_H__ |
| #define __RADEON_LOCK_H__ |
| |
| #include "radeon_context.h" |
| |
| extern void radeonGetLock(radeonContextPtr rmesa, GLuint flags); |
| extern void radeonUpdatePageFlipping(radeonContextPtr rmesa); |
| |
| /* Turn DEBUG_LOCKING 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 |
| |
| /* |
| * !!! 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( rmesa ) \ |
| do { \ |
| char __ret = 0; \ |
| DEBUG_CHECK_LOCK(); \ |
| DRM_CAS((rmesa)->dri.hwLock, (rmesa)->dri.hwContext, \ |
| (DRM_LOCK_HELD | (rmesa)->dri.hwContext), __ret); \ |
| if (__ret) \ |
| radeonGetLock((rmesa), 0); \ |
| DEBUG_LOCK(); \ |
| } while (0) |
| |
| #define UNLOCK_HARDWARE( rmesa ) \ |
| do { \ |
| DRM_UNLOCK((rmesa)->dri.fd, \ |
| (rmesa)->dri.hwLock, \ |
| (rmesa)->dri.hwContext); \ |
| DEBUG_RESET(); \ |
| } while (0) |
| |
| #endif /* __RADEON_LOCK_H__ */ |
