ida_outl
ida_outl(ida, R_42XX_REQUEST, qcb->hwqcb_busaddr);
ida_outl(ida, R_42XX_REPLY, 0); /* confirm read */
ida_outl(ida, R_42XX_INT_MASK,
ida_outl(ida, R_CMD_FIFO, qcb->hwqcb_busaddr);
ida_outl(ida, R_INT_MASK, enable ? INT_ENABLE : INT_DISABLE);