Defined in 3 files as a macro:
- sys/external/bsd/drm/dist/shared-core/r600_blit.c, line 1199 (as a macro)
- sys/external/bsd/drm/dist/shared-core/radeon_cs.c, line 132 (as a macro)
- sys/external/bsd/drm2/dist/drm/radeon/radeon_drv.h, line 1166 (as a macro)