Defined in 3 files as a macro:
- sys/external/bsd/drm/dist/shared-core/radeon_drv.h, line 1318 (as a macro)
- sys/external/bsd/drm2/dist/drm/radeon/radeon_drv.h, line 1285 (as a macro)
- sys/external/bsd/drm2/dist/drm/radeon/radeon_reg.h, line 2942 (as a macro)