XAXIDMA_TX_CDESC_OFFSET
nixge_dma_write_desc_reg(priv, XAXIDMA_TX_CDESC_OFFSET, priv->tx_bd_p);
nixge_dma_write_desc_reg(lp, XAXIDMA_TX_CDESC_OFFSET, lp->tx_bd_p);
data[34] = axienet_dma_in32(lp, XAXIDMA_TX_CDESC_OFFSET);
void __iomem *desc = lp->dma_regs + XAXIDMA_TX_CDESC_OFFSET + 4;
axienet_dma_out_addr(lp, XAXIDMA_TX_CDESC_OFFSET, lp->tx_bd_p);