PIPE_CONTROL_GLOBAL_GTT
*cs++ = i915_scratch_offset(rq->i915) | PIPE_CONTROL_GLOBAL_GTT;
*cs++ = i915_scratch_offset(rq->i915) | PIPE_CONTROL_GLOBAL_GTT;
*cs++ = scratch_addr | PIPE_CONTROL_GLOBAL_GTT;
*cs++ = scratch_addr | PIPE_CONTROL_GLOBAL_GTT;
*cs++ = scratch_addr | PIPE_CONTROL_GLOBAL_GTT;