fcp_txrdy
struct fcp_txrdy *xfer = io->xfer_rdy.virt;
dma->size = sizeof(struct fcp_txrdy) * hw->config.n_io;
io->xfer_rdy.size = sizeof(struct fcp_txrdy);
xfer_virt += sizeof(struct fcp_txrdy);
xfer_phys += sizeof(struct fcp_txrdy);
struct fcp_txrdy *dd;
struct fcp_txrdy *txrdy;