@@ -1985,6 +1985,53 @@ MemoryRegion *pci_address_space_io(PCIDevice *dev)
return dev->bus->address_space_io;
}
+int pci_check_bar_overlap(PCIDevice *dev,
+ pcibus_t addr, pcibus_t size, uint8_t type)
+{
+ PCIBus *bus = dev->bus;
+ PCIDevice *devices = NULL;
+ PCIIORegion *r;
+ int i, j;
+ int rc = 0;
+
+ /* check Overlapped to Base Address */
+ for (i = 0; i < ARRAY_SIZE(bus->devices); i++) {
+ devices = bus->devices[i];
+ if (!devices) {
+ continue;
+ }
+
+ /* skip itself */
+ if (devices->devfn == dev->devfn) {
+ continue;
+ }
+
+ for (j = 0; j < PCI_NUM_REGIONS; j++) {
+ r = &devices->io_regions[j];
+
+ /* skip different resource type, but don't skip when
+ * prefetch and non-prefetch memory are compared.
+ */
+ if (type != r->type) {
+ if (type & PCI_BASE_ADDRESS_SPACE_IO ||
+ r->type & PCI_BASE_ADDRESS_SPACE_IO) {
+ continue;
+ }
+ }
+
+ if ((addr < (r->addr + r->size)) && ((addr + size) > r->addr)) {
+ printf("Overlapped to device[%02x:%02x.%x][Region:%d]"
+ "[Address:%"PRIx64"h][Size:%"PRIx64"h]\n",
+ pci_bus_num(bus), PCI_SLOT(devices->devfn),
+ PCI_FUNC(devices->devfn), j, r->addr, r->size);
+ rc = 1;
+ }
+ }
+ }
+
+ return rc;
+}
+
static void pci_device_class_init(ObjectClass *klass, void *data)
{
DeviceClass *k = DEVICE_CLASS(klass);
@@ -566,4 +566,7 @@ extern const VMStateDescription vmstate_pci_device;
.offset = vmstate_offset_pointer(_state, _field, PCIDevice), \
}
+int pci_check_bar_overlap(PCIDevice *dev,
+ pcibus_t addr, pcibus_t size, uint8_t type);
+
#endif