pp_dir
ppgtt->pp_dir = ggtt_offset * sizeof(gen6_pte_t) << 10;
u32 pp_dir;
return to_gen6_ppgtt(i915_vm_to_ppgtt(vm))->pp_dir;
ENGINE_WRITE_FW(engine, RING_PP_DIR_BASE, pp_dir(vm));
*cs++ = pp_dir(vm);