pci: add pci_address_space()

Returns the PCI address space.  Useful for bridges that can obscure
part of the PCI address space.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

2 files changed, 6 insertions, 0 deletions

diff --git a/hw/pci.c b/hw/pci.c
index 4dc13d2..6124790 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -2165,3 +2165,8 @@ int pci_qdev_find_device(const char *id, PCIDevice **pdev)
 
     return rc;
 }
+
+MemoryRegion *pci_address_space(PCIDevice *dev)
+{
+    return dev->bus->address_space_mem;
+}
diff --git a/hw/pci.h b/hw/pci.h
index d7ad7fb..391217e 100644
--- a/hw/pci.h
+++ b/hw/pci.h
@@ -220,6 +220,7 @@ void pci_default_write_config(PCIDevice *d,
                               uint32_t address, uint32_t val, int len);
 void pci_device_save(PCIDevice *s, QEMUFile *f);
 int pci_device_load(PCIDevice *s, QEMUFile *f);
+MemoryRegion *pci_address_space(PCIDevice *dev);
 
 typedef void (*pci_set_irq_fn)(void *opaque, int irq_num, int level);
 typedef int (*pci_map_irq_fn)(PCIDevice *pci_dev, int irq_num);