void pci_register_bar(PCIDevice *pci_dev, int region_num, pcibus_t size, int type, PCIMapIORegionFunc *map_func) { PCIIORegion *r; uint32_t addr; uint64_t wmask; if ((unsigned int)region_num >= PCI_NUM_REGIONS) return; if (size & (size-1)) { fprintf(stderr, "ERROR: PCI region size must be pow2 " "type=0x%x, size=0x%"FMT_PCIBUS"\n", type, size); exit(1); } r = &pci_dev->io_regions[region_num]; r->addr = PCI_BAR_UNMAPPED; r->size = size; r->filtered_size = size; r->type = type; r->map_func = map_func; wmask = ~(size - 1); addr = pci_bar(pci_dev, region_num); if (region_num == PCI_ROM_SLOT) { /* ROM enable bit is writeable */ wmask |= PCI_ROM_ADDRESS_ENABLE; } pci_set_long(pci_dev->config + addr, type); if (!(r->type & PCI_BASE_ADDRESS_SPACE_IO) && r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) { pci_set_quad(pci_dev->wmask + addr, wmask); pci_set_quad(pci_dev->cmask + addr, ~0ULL); } else { pci_set_long(pci_dev->wmask + addr, wmask & 0xffffffff); pci_set_long(pci_dev->cmask + addr, 0xffffffff); } }