X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=MdePkg%2FInclude%2FLibrary%2FPciCf8Lib.h;h=e1f7e888eb48bd8f1f452fb707494d8d37a0efb1;hb=badcbfb23811c02780d4ea7f20cd6ccf7b86f346;hp=f5ab3984ab07544c376c3828875be08b244ec656;hpb=aef389d31437b012871da02abc555ca7145e35bb;p=mirror_edk2.git

diff --git a/MdePkg/Include/Library/PciCf8Lib.h b/MdePkg/Include/Library/PciCf8Lib.h
index f5ab3984ab..e1f7e888eb 100644
--- a/MdePkg/Include/Library/PciCf8Lib.h
+++ b/MdePkg/Include/Library/PciCf8Lib.h
@@ -1,5 +1,9 @@
 /** @file
   Provides services to access PCI Configuration Space using the I/O ports 0xCF8 and 0xCFC.
+  
+  This library is identical to the PCI Library, except the access method for performing PCI 
+  configuration cycles must be though I/O ports 0xCF8 and 0xCFC.  This library only allows 
+  access to PCI Segment #0.
 
 Copyright (c) 2006 - 2008, Intel Corporation
 All rights reserved. This program and the accompanying materials