PCI_CB_BRIDGE_CTL_PREFETCH_MEM0
tmp &= ~PCI_CB_BRIDGE_CTL_PREFETCH_MEM0;
if (!(ctrl & PCI_CB_BRIDGE_CTL_PREFETCH_MEM0)) {
ctrl |= PCI_CB_BRIDGE_CTL_PREFETCH_MEM0;
if (ctrl & PCI_CB_BRIDGE_CTL_PREFETCH_MEM0) {