Add function doxygen header for PciBus module.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5066 6f19259b-4bc3-4df7-8a09-765794883524

IntelFrameworkModulePkg/Bus/Pci/PciBusDxe/PciDriverOverride.h

@@ -27,73 +27,51 @@ typedef struct {
 #define DRIVER_OVERRIDE_FROM_LINK(a) \
   CR (a, PCI_DRIVER_OVERRIDE_LIST, Link, DRIVER_OVERRIDE_SIGNATURE)
 
+/**
+  Initializes a PCI Driver Override Instance
 
+  @param  PciIoDevice   Device instance
+
+  @retval EFI_SUCCESS Operation success
+**/
 EFI_STATUS
 InitializePciDriverOverrideInstance (
   PCI_IO_DEVICE  *PciIoDevice
   )
-/**
-
-Routine Description:
-
-  TODO: Add function description
-
-Arguments:
-
-  PciIoDevice - TODO: add argument description
-
-Returns:
-
-  TODO: add return values
-
-**/
 ;
 
+/**
+  Add an overriding driver image
+  
+  @param PciIoDevice        Instance of PciIo device
+  @param DriverImageHandle  new added driver image
+  
+  @retval EFI_OUT_OF_RESOURCES no memory resource for new driver instance
+  @retval EFI_SUCCESS       Success add driver
+**/
 EFI_STATUS
 AddDriver (
   IN PCI_IO_DEVICE     *PciIoDevice,
   IN EFI_HANDLE        DriverImageHandle
   )
-/**
-
-Routine Description:
-
-  TODO: Add function description
-
-Arguments:
-
-  PciIoDevice       - TODO: add argument description
-  DriverImageHandle - TODO: add argument description
-
-Returns:
-
-  TODO: add return values
-
-**/
 ;
 
+
+/**
+  Get a overriding driver image
+  @param  This                Pointer to instance of EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL
+  @param  DriverImageHandle   Override driver image,
+  
+  @retval EFI_SUCCESS                 Success to get driver image handle
+  @retval EFI_NOT_FOUND               can not find override driver image
+  @retval EFI_INVALID_PARAMETER       Invalid parameter
+**/
 EFI_STATUS
 EFIAPI
 GetDriver (
   IN EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL              *This,
   IN OUT EFI_HANDLE                                         *DriverImageHandle
   )
-/**
-
-Routine Description:
-
-  TODO: Add function description
-
-Arguments:
-
-  This              - TODO: add argument description
-  DriverImageHandle - TODO: add argument description
-
-Returns:
-
-  TODO: add return values
-
-**/
 ;
 
 #endif