From 7afa5ea8003e5d3b47a4b42cd2ef353f62126afa Mon Sep 17 00:00:00 2001
From: rsun3 <rsun3@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Tue, 14 Dec 2010 09:52:38 +0000
Subject: [PATCH] Add special treatment for
 EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE and EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM,
 because these attributes are only for PCI IO, while not supported by PCI Root
 Bridge IO.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11165 6f19259b-4bc3-4df7-8a09-765794883524
---
 MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c | 3 +++
 MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c                | 7 +++++++
 2 files changed, 10 insertions(+)

diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c b/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c
index 2a399c2ec2..c8689c0421 100644
--- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c
+++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c
@@ -1063,6 +1063,9 @@ DetermineDeviceAttribute (
     if (EFI_ERROR (Status)) {
       return Status;
     }
+    PciIoDevice->Supports |= (EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE |
+                              EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM);
+
   } else {
 
     //
diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c b/MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c
index 86c9135afd..c39de9dd7e 100644
--- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c
+++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c
@@ -1268,6 +1268,13 @@ ModifyRootBridgeAttributes (
     return EFI_UNSUPPORTED;
   }
 
+  //
+  // Mask off EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE & 
+  // EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM, which are not supported by PCI root bridge.
+  //
+  Attributes &= ~(UINT64)(EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE |
+                          EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM);
+
   //
   // Record the new attribute of the Root Bridge
   //
-- 
2.39.2