Add runtime registration function to all PCI Libs

[mirror_edk2.git] / MdePkg / Library / BasePciCf8Lib / PciCf8Lib.c

diff --git a/MdePkg/Library/BasePciCf8Lib/PciCf8Lib.c b/MdePkg/Library/BasePciCf8Lib/PciCf8Lib.c
index 995e4ab1b7154ed9efde34670d62f977d7644e03..d6bc180b8b2e216f093577e7333bf09500fcc128 100644 (file)
--- a/MdePkg/Library/BasePciCf8Lib/PciCf8Lib.c
+++ b/MdePkg/Library/BasePciCf8Lib/PciCf8Lib.c
@@ -60,6 +60,33 @@
 #define ASSERT_INVALID_PCI_ADDRESS(A,M) \\r
   ASSERT (((A) & (~0xffff0ff | (M))) == 0)\r
 \r
+/**\r
+  Register a PCI device so PCI configuration registers may be accessed after \r
+  SetVirtualAddressMap().\r
+  \r
+  If Address > 0x0FFFFFFF, then ASSERT().\r
+\r
+  @param  Address Address that encodes the PCI Bus, Device, Function and\r
+                  Register.\r
+  \r
+  @retval RETURN_SUCCESS           The PCI device was registered for runtime access.\r
+  @retval RETURN_UNSUPPORTED       An attempt was made to call this function \r
+                                   after ExitBootServices().\r
+  @retval RETURN_UNSUPPORTED       The resources required to access the PCI device\r
+                                   at runtime could not be mapped.\r
+  @retval RETURN_OUT_OF_RESOURCES  There are not enough resources available to\r
+                                   complete the registration.\r
+\r
+**/\r
+RETURN_STATUS\r
+EFIAPI\r
+PciCf8RegisterForRuntimeAccess (\r
+  IN UINTN  Address\r
+  )\r
+{\r
+  return RETURN_SUCCESS;\r
+}\r
+\r
 /**\r
   Reads an 8-bit PCI configuration register.\r
 \r