INT_STS_OFFSET
intr_status = zynq_fpga_read(priv, INT_STS_OFFSET);
zynq_fpga_write(priv, INT_STS_OFFSET, IXR_DMA_DONE_MASK);
zynq_fpga_write(priv, INT_STS_OFFSET, IXR_ALL_MASK);
intr_status = zynq_fpga_read(priv, INT_STS_OFFSET);
zynq_fpga_write(priv, INT_STS_OFFSET, IXR_ALL_MASK);
err = zynq_fpga_poll_timeout(priv, INT_STS_OFFSET, intr_status,
intr_status = zynq_fpga_read(priv, INT_STS_OFFSET);
zynq_fpga_write(priv, INT_STS_OFFSET, IXR_ALL_MASK);