APC_CSR_PPAUSE
APC_CSR_PPAUSE | \
if ((csr & APC_CSR_PDMA_GO) == 0 || (csr & APC_CSR_PPAUSE) != 0) {
APC_READ(sc, APC_CSR) & ~(APC_CSR_PIE | APC_CSR_PPAUSE));