sli_cmd_config_auto_xfer_rdy
written_size = sli_cmd_config_auto_xfer_rdy(&hw->sli, buf, SLI4_BMBX_SIZE, hw->config.auto_xfer_rdy_size);
extern int32_t sli_cmd_config_auto_xfer_rdy(sli4_t *, void *, size_t, uint32_t);