1 files changed, 18 insertions, 1 deletions
diff --git a/hw/pci_internals.h b/hw/pci_internals.h
index c7fd23dc54..96690b72d3 100644
--- a/hw/pci_internals.h
+++ b/hw/pci_internals.h
@@ -24,7 +24,6 @@ struct PCIBus {
     void *irq_opaque;
     PCIDevice *devices[PCI_SLOT_MAX * PCI_FUNC_MAX];
     PCIDevice *parent_dev;
-    target_phys_addr_t mem_base;
     MemoryRegion *address_space_mem;
     MemoryRegion *address_space_io;
 
@@ -42,6 +41,24 @@ struct PCIBridge {
 
     /* private member */
     PCIBus sec_bus;
+    /*
+     * Memory regions for the bridge's address spaces.  These regions are not
+     * directly added to system_memory/system_io or its descendants.
+     * Bridge's secondary bus points to these, so that devices
+     * under the bridge see these regions as its address spaces.
+     * The regions are as large as the entire address space -
+     * they don't take into account any windows.
+     */
+    MemoryRegion address_space_mem;
+    MemoryRegion address_space_io;
+    /*
+     * Aliases for each of the address space windows that the bridge
+     * can forward. Mapped into the bridge's parent's address space,
+     * as subregions.
+     */
+    MemoryRegion alias_pref_mem;
+    MemoryRegion alias_mem;
+    MemoryRegion alias_io;
     pci_map_irq_fn map_irq;
     const char *bus_name;
 };