FW: [edk2-devel] [PATCH V2] ShellPkg/Pci.c: Update supported link speed to PCI4.0

FW: [edk2-devel] [PATCH V2] ShellPkg/Pci.c: Update supported link speed to PCI4.0

[Gao, Zhichao]

Ping. Please help to review it.

Thanks,
Zhichao

-----Original Message-----
From: devel@edk2.groups.io [mailto:devel@edk2.groups.io] On Behalf Of Gao, Zhichao
Sent: Monday, July 22, 2019 2:58 PM
To: devel@edk2.groups.io
Cc: Carsey, Jaben <jaben.carsey@intel.com>; Ni, Ray <ray.ni@intel.com>; Oleksiy <oleksiyy@ami.com>
Subject: [edk2-devel] [PATCH V2] ShellPkg/Pci.c: Update supported link speed to PCI4.0

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1955

Refer PCI express base specification Reversion 4.0, Version 1.0, Table 7-32, Supported Link Speeds Vector bit 3 indicate the speed 16 GT/s. Add it to shell command 'pci ...'.

Change the MaxLinkSpeed other values' result from 'Unknown'
to 'Reserved'.

Cc: Jaben Carsey <jaben.carsey@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Oleksiy <oleksiyy@ami.com>
Signed-off-by: Zhichao Gao <zhichao.gao@intel.com>
---

V2:
Update the copyright.

And remind that this patch isn't update the code to match PCI 5.0. I didn't find edk repo update the related code to PCI 5.0. Please let me know if there is a requirement to update this code to PCI 5.0.

 ShellPkg/Library/UefiShellDebug1CommandsLib/Pci.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/Pci.c b/ShellPkg/Library/UefiShellDebug1CommandsLib/Pci.c
index ba9caa7743..b58ce3c2f0 100644
--- a/ShellPkg/Library/UefiShellDebug1CommandsLib/Pci.c
+++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/Pci.c
@@ -1,7 +1,7 @@
 /** @file
   Main file for Pci shell Debug1 function.
 
-  Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2005 - 2019, Intel Corporation. All rights 
+ reserved.<BR>
   (C) Copyright 2013-2015 Hewlett-Packard Development Company, L.P.<BR>
   (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
   SPDX-License-Identifier: BSD-2-Clause-Patent @@ -4515,8 +4515,11 @@ ExplainPcieLinkCap (
     case 3:
       MaxLinkSpeed = L"8.0 GT/s";
       break;
+    case 4:
+      MaxLinkSpeed = L"16.0 GT/s";
+      break;
     default:
-      MaxLinkSpeed = L"Unknown";
+      MaxLinkSpeed = L"Reserved";
       break;
   }
   ShellPrintEx (-1, -1,
@@ -4672,6 +4675,9 @@ ExplainPcieLinkStatus (
     case 3:
       CurLinkSpeed = L"8.0 GT/s";
       break;
+    case 4:
+      CurLinkSpeed = L"16.0 GT/s";
+      break;
     default:
       CurLinkSpeed = L"Reserved";
       break;
--
2.21.0.windows.1