cpu2qe_addr
iowrite32be(cpu2qe_addr(bd_virt, qe_port), &bdp->buf);
iowrite32be(cpu2qe_addr(bd_virt, qe_port), &bdp->buf);
iowrite32be(cpu2qe_addr(bd_virt, qe_port), &bdp->buf);
iowrite32be(cpu2qe_addr(bd_virt, qe_port), &bdp->buf);