pci: introduce pcibus_t to represent pci bus address/size instead of uint32_t

This patch is preliminary for 64 bit BAR support.
Introduce dedicated type, pcibus_t, to represent pci bus address/size
instead of uint32_t.
Later this type will be changed to uint64_t.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 7 insertions, 5 deletions

diff --git a/hw/pci.h b/hw/pci.h
index e9ba6d3135..9509a6bf38 100644
--- a/hw/pci.h
+++ b/hw/pci.h
@@ -71,18 +71,20 @@ extern target_phys_addr_t pci_mem_base;
 #define PCI_DEVICE_ID_VIRTIO_BALLOON     0x1002
 #define PCI_DEVICE_ID_VIRTIO_CONSOLE     0x1003
 
+typedef uint32_t pcibus_t;
+
 typedef void PCIConfigWriteFunc(PCIDevice *pci_dev,
                                 uint32_t address, uint32_t data, int len);
 typedef uint32_t PCIConfigReadFunc(PCIDevice *pci_dev,
                                    uint32_t address, int len);
 typedef void PCIMapIORegionFunc(PCIDevice *pci_dev, int region_num,
-                                uint32_t addr, uint32_t size, int type);
+                                pcibus_t addr, pcibus_t size, int type);
 typedef int PCIUnregisterFunc(PCIDevice *pci_dev);
 
 typedef struct PCIIORegion {
-    uint32_t addr; /* current PCI mapping address. -1 means not mapped */
-#define PCI_BAR_UNMAPPED (~(uint32_t)0)
-    uint32_t size;
+    pcibus_t addr; /* current PCI mapping address. -1 means not mapped */
+#define PCI_BAR_UNMAPPED (~(pcibus_t)0)
+    pcibus_t size;
     uint8_t type;
     PCIMapIORegionFunc *map_func;
 } PCIIORegion;
@@ -224,7 +226,7 @@ PCIDevice *pci_register_device(PCIBus *bus, const char *name,
                                PCIConfigWriteFunc *config_write);
 
 void pci_register_bar(PCIDevice *pci_dev, int region_num,
-                            uint32_t size, int type,
+                            pcibus_t size, int type,
                             PCIMapIORegionFunc *map_func);
 
 int pci_add_capability(PCIDevice *pci_dev, uint8_t cap_id, uint8_t cap_size);