RXCFG
writel(readl(ns->base + RXCFG) | RXCFG_RX_FD,
ns->base + RXCFG);
writel(readl(ns->base + RXCFG) & ~RXCFG_RX_FD,
ns->base + RXCFG);
| (RXCFG_MXDMA512) | 0, ns->base + RXCFG);
OUTL(dp, RXCFG, rxcfg);