MdeModulePkg/PciBus: return CPU address for GetBarAttributes

[mirror_edk2.git] / MdeModulePkg / Bus / Pci / PciBusDxe / PciIo.c

diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c b/MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c
index fef3eceb7f62eee18c338ee2d1dcab20b28286a6..62179eb44bbdbf9d4f57d34dc11f68f13444a182 100644 (file)
--- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c
+++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c
@@ -1972,6 +1972,10 @@ PciIoGetBarAttributes (
         return EFI_UNSUPPORTED;\r
       }\r
     }\r
         return EFI_UNSUPPORTED;\r
       }\r
     }\r

+\r
+    // According to UEFI spec 2.7, we need return host address for\r
+    // PciIo->GetBarAttributes, and host address = device address - translation.\r
+    Descriptor->AddrRangeMin -= Descriptor->AddrTranslationOffset;\r

   }\r
 \r
   return EFI_SUCCESS;\r
   }\r
 \r
   return EFI_SUCCESS;\r