char * ia64_pci_get_legacy_mem (struct pci_bus * bus);
Find the base of legacy memory for bus. This is typically the first megabyte of bus address space for bus or is simply 0 on platforms whose chipsets support legacy I/O and memory routing. Returns the base address or an error pointer if an error occurred.
This is the ia64 generic version of this routine. Other platforms are free to override it with a machine vector.