| /* |
| 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. |
| |
| 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: |
| * Keith Whitwell <keith@tungstengraphics.com> |
| */ |
| |
| #ifndef __RADEON_LOCK_H__ |
| #define __RADEON_LOCK_H__ |
| |
| #if 0 |
| #include "r200_ioctl.h" |
| #endif |
| #include "radeon_context.h" |
| |
| extern void radeonGetLock(radeonContextPtr radeon, GLuint flags); |
| extern void radeonUpdatePageFlipping(radeonContextPtr radeon); |
| |
| /* 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( radeon ) \ |
| do { \ |
| char __ret = 0; \ |
| DEBUG_CHECK_LOCK(); \ |
| DRM_CAS( (radeon)->dri.hwLock, (radeon)->dri.hwContext, \ |
| (DRM_LOCK_HELD | (radeon)->dri.hwContext), __ret ); \ |
| if ( __ret ) \ |
| radeonGetLock( (radeon), 0 ); \ |
| DEBUG_LOCK(); \ |
| } while (0) |
| |
| #if R200_MERGED |
| #define UNLOCK_HARDWARE( radeon ) \ |
| do { \ |
| DRM_UNLOCK( (radeon)->dri.fd, \ |
| (radeon)->dri.hwLock, \ |
| (radeon)->dri.hwContext ); \ |
| DEBUG_RESET(); \ |
| if (IS_R200_CLASS(radeon->radeonScreen)) { \ |
| r200ContextPtr __r200 = (r200ContextPtr)(radeon); \ |
| if (__r200->save_on_next_unlock) \ |
| r200SaveHwState( __r200 ); \ |
| __r200->save_on_next_unlock = GL_FALSE; \ |
| } \ |
| } while (0) |
| #else |
| #define UNLOCK_HARDWARE( radeon ) \ |
| do { \ |
| DRM_UNLOCK( (radeon)->dri.fd, \ |
| (radeon)->dri.hwLock, \ |
| (radeon)->dri.hwContext ); \ |
| DEBUG_RESET(); \ |
| } while (0) |
| #endif |
| #endif /* __RADEON_LOCK_H__ */ |