CVMX_IPD_PRC_HOLD_PTR_FIFO_CTL
cvmx_read_csr(CVMX_IPD_PRC_HOLD_PTR_FIFO_CTL);
cvmx_write_csr(CVMX_IPD_PRC_HOLD_PTR_FIFO_CTL,
(CVMX_IPD_PRC_HOLD_PTR_FIFO_CTL);
cvmx_write_csr(CVMX_IPD_PRC_HOLD_PTR_FIFO_CTL,