pch_ch_event_write
pch_ch_event_write(pdev, RX_SNAPSHOT_LOCKED);
pch_ch_event_write(pdev, TX_SNAPSHOT_LOCKED);
pch_ch_event_write(pdev, TX_SNAPSHOT_LOCKED | RX_SNAPSHOT_LOCKED);
EXPORT_SYMBOL(pch_ch_event_write);
void pch_ch_event_write(struct pci_dev *pdev, u32 val);