MdeModulePkg/PciBus: Remove unnecessary PCIE detection

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

diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciDeviceSupport.c b/MdeModulePkg/Bus/Pci/PciBusDxe/PciDeviceSupport.c
index 97bb971a5966a2d869d8da42b47cb4e5be386f27..f69fe938da061263fb0fde7dce895d14d2afd450 100644 (file)
--- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciDeviceSupport.c
+++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciDeviceSupport.c
@@ -1,7 +1,7 @@
 /** @file\r
   Supporting functions implementaion for PCI devices management.\r
 \r
-Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
 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
@@ -211,7 +211,6 @@ RegisterPciDevice (
   EFI_STATUS          Status;\r
   VOID                *PlatformOpRomBuffer;\r
   UINTN               PlatformOpRomSize;\r
-  UINT8               PciExpressCapRegOffset;\r
   EFI_PCI_IO_PROTOCOL *PciIo;\r
   UINT8               Data8;\r
   BOOLEAN             HasEfiImage;\r
@@ -231,20 +230,6 @@ RegisterPciDevice (
     return Status;\r
   }\r
 \r
-  //\r
-  // Detect if PCI Express Device\r
-  //\r
-  PciExpressCapRegOffset = 0;\r
-  Status = LocateCapabilityRegBlock (\r
-             PciIoDevice,\r
-             EFI_PCI_CAPABILITY_ID_PCIEXP,\r
-             &PciExpressCapRegOffset,\r
-             NULL\r
-             );\r
-  if (!EFI_ERROR (Status)) {\r
-    PciIoDevice->IsPciExp = TRUE;\r
-  }\r
-\r
   //\r
   // Force Interrupt line to "Unknown" or "No Connection"\r
   //\r
@@ -711,12 +696,7 @@ StartPciDevicesOnBridge (
                              0,\r
                              &Supports\r
                              );\r
-        //\r
-        // By default every bridge's IO and MMIO spaces are enabled.\r
-        // Bridge's Bus Master will be enabled when any device behind it requests\r
-        // to enable Bus Master.\r
-        //\r
-        Supports &= (UINT64) (EFI_PCI_IO_ATTRIBUTE_IO | EFI_PCI_IO_ATTRIBUTE_MEMORY);\r
+        Supports &= (UINT64)EFI_PCI_DEVICE_ENABLE;\r
         PciIoDevice->PciIo.Attributes (\r
                              &(PciIoDevice->PciIo),\r
                              EfiPciIoAttributeOperationEnable,\r
@@ -768,12 +748,7 @@ StartPciDevicesOnBridge (
                              0,\r
                              &Supports\r
                              );\r
-        //\r
-        // By default every bridge's IO and MMIO spaces are enabled.\r
-        // Bridge's Bus Master will be enabled when any device behind it requests\r
-        // to enable Bus Master.\r
-        //\r
-        Supports &= (UINT64) (EFI_PCI_IO_ATTRIBUTE_IO | EFI_PCI_IO_ATTRIBUTE_MEMORY);\r
+        Supports &= (UINT64)EFI_PCI_DEVICE_ENABLE;\r
         PciIoDevice->PciIo.Attributes (\r
                              &(PciIoDevice->PciIo),\r
                              EfiPciIoAttributeOperationEnable,\r