SIGNATURE_ENABLE
qat_hal_rd_ae_csr(handle, ae, SIGNATURE_ENABLE, &csr_val);
qat_hal_wr_ae_csr(handle, ae, SIGNATURE_ENABLE, csr_val);
qat_ae_read_4(sc, ae, SIGNATURE_ENABLE, &val);
qat_ae_write_4(sc, ae, SIGNATURE_ENABLE, val);