drm/radeon: adding synchronization for GRBM GFX
Implementing a lock for selecting and accessing shader engines and arrays.
This lock will make sure that radeon and amdkfd are not colliding when
accessing shader engines and arrays with GRBM_GFX_INDEX register.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index f6cb42e..e95718f0 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -2397,6 +2397,8 @@
struct radeon_atcs atcs;
/* srbm instance registers */
struct mutex srbm_mutex;
+ /* GRBM index mutex. Protects concurrents access to GRBM index */
+ struct mutex grbm_idx_mutex;
/* clock, powergating flags */
u32 cg_flags;
u32 pg_flags;