NVREG_RCVCTL_START
if ((readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) && !np->mac_in_use) {
rx_ctrl &= ~NVREG_RCVCTL_START;
rx_ctrl |= NVREG_RCVCTL_START;
rx_ctrl &= ~NVREG_RCVCTL_START;
if (readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) {