DMA_CFG_RD_ENB
DMA_CFG_RD_ENB | DMA_CFG_WR_ENB);
sc->age_dma_rd_burst | DMA_CFG_RD_ENB |
CSR_READ_4(sc, AGE_DMA_CFG) & ~(DMA_CFG_RD_ENB | DMA_CFG_WR_ENB));
if ((reg & DMA_CFG_RD_ENB) != 0) {
reg &= ~DMA_CFG_RD_ENB;