Remove ProcessLibraryDestructorList() from the library class of DxeCoreEntryPointLib...

[mirror_edk2.git] / MdePkg / Include / Library / PciExpressLib.h

diff --git a/MdePkg/Include/Library/PciExpressLib.h b/MdePkg/Include/Library/PciExpressLib.h
index 712b0c219a38b40b8fdf26bd8e21b1fb89c96e7e..1a1356e3d8998fadd743438a85bf085fdf7f5554 100644 (file)
--- a/MdePkg/Include/Library/PciExpressLib.h
+++ b/MdePkg/Include/Library/PciExpressLib.h
@@ -1,7 +1,11 @@
 /** @file\r
   Provides services to access PCI Configuration Space using the MMIO PCI Express window.\r
+  \r
+  This library is identical to the PCI Library, except the access method for performing PCI \r
+  configuration cycles must be though the 256 MB PCI Express MMIO window whose base address\r
+  is defined by PcdPciExpressBaseAddress.\r
 \r
-Copyright (c) 2006 - 2008, Intel Corporation\r
+Copyright (c) 2006 - 2008, Intel Corporation<BR>\r
 All rights reserved. This program and the accompanying materials\r
 are licensed and made available under the terms and conditions of the BSD License\r
 which accompanies this distribution.  The full text of the license may be found at\r
@@ -34,6 +38,30 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #define PCI_EXPRESS_LIB_ADDRESS(Bus,Device,Function,Offset) \\r
   (((Offset) & 0xfff) | (((Function) & 0x07) << 12) | (((Device) & 0x1f) << 15) | (((Bus) & 0xff) << 20))\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
+PciExpressRegisterForRuntimeAccess (\r
+  IN UINTN  Address\r
+  );\r
+\r
 /**\r
   Reads an 8-bit PCI configuration register.\r
 \r
@@ -968,7 +996,7 @@ PciExpressBitFieldAndThenOr32 (
   @param  Size          Size in bytes of the transfer.\r
   @param  Buffer        Pointer to a buffer receiving the data read.\r
 \r
-  @return Size read daata from StartAddress.\r
+  @return Size read data from StartAddress.\r
 \r
 **/\r
 UINTN\r