1. Retired HotPlugDevice protocol.

2. Check devicepath node to get hot plug information. Currently, USB and PCCard device are checked.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7562 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Bus/Usb/UsbKbDxe/EfiKey.c

@@ -293,9 +293,8 @@ USBKeyboardDriverBindingStart (
   // Install Simple Text Input Protocol and Simple Text Input Ex Protocol
   // for the USB keyboard device.
   // USB keyboard is a hot plug device, and expected to work immediately
-  // when plugging into system, so a HotPlugDeviceGuid is installed onto
+  // when plugging into system, other conventional console devices could
-  // the usb keyboard device handle, to distinguish it from other conventional
+  // distinguish it by its device path.
-  // console devices.
   //
   Status = gBS->InstallMultipleProtocolInterfaces (
                   &Controller,
@@ -303,8 +302,6 @@ USBKeyboardDriverBindingStart (
                   &UsbKeyboardDevice->SimpleInput,
                   &gEfiSimpleTextInputExProtocolGuid,
                   &UsbKeyboardDevice->SimpleInputEx,
-                  &gEfiHotPlugDeviceGuid,
-                  NULL,
                   NULL
                   );
   if (EFI_ERROR (Status)) {
@@ -325,8 +322,6 @@ USBKeyboardDriverBindingStart (
            &UsbKeyboardDevice->SimpleInput,
            &gEfiSimpleTextInputExProtocolGuid,
            &UsbKeyboardDevice->SimpleInputEx,
-           &gEfiHotPlugDeviceGuid,
-           NULL,
            NULL
            );
     goto ErrorExit;
@@ -356,8 +351,6 @@ USBKeyboardDriverBindingStart (
            &UsbKeyboardDevice->SimpleInput,
            &gEfiSimpleTextInputExProtocolGuid,
            &UsbKeyboardDevice->SimpleInputEx,
-           &gEfiHotPlugDeviceGuid,
-           NULL,
            NULL
            );
     goto ErrorExit;
@@ -495,8 +488,6 @@ USBKeyboardDriverBindingStop (
                   &UsbKeyboardDevice->SimpleInput,
                   &gEfiSimpleTextInputExProtocolGuid,
                   &UsbKeyboardDevice->SimpleInputEx,
-                  &gEfiHotPlugDeviceGuid,
-                  NULL,
                   NULL
                   );
   //

MdeModulePkg/Bus/Usb/UsbKbDxe/EfiKey.h

@@ -23,7 +23,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Protocol/UsbIo.h>
 #include <Protocol/DevicePath.h>
 #include <Protocol/SimpleTextInExNotify.h>
-#include <Protocol/HotPlugDevice.h>
 
 #include <Guid/HiiKeyBoardLayout.h>
 

MdeModulePkg/Bus/Usb/UsbKbDxe/UsbKbDxe.inf

@@ -79,7 +79,6 @@
   gEfiDevicePathProtocolGuid                    ## TO_START
   gEfiSimpleTextInProtocolGuid                  ## BY_START
   gEfiSimpleTextInputExProtocolGuid             ## BY_START
-  gEfiHotPlugDeviceGuid                         ## BY_START
   ##
   # If HII Database Protocol exists, then keyboard layout from HII database is used.
   # Otherwise, USB keyboard module tries to use its carried default layout.

MdeModulePkg/Include/Protocol/HotPlugDevice.h

@@ -1,24 +0,0 @@
-/** @file
-  This protocol guid is used to specify the device is the hot plug device.
-  If the device is the hot plug device, this protocol guid
-  will be installed into this device handle.
-
-Copyright (c) 2006 - 2008, Intel Corporation
-All rights reserved. This program and the accompanying materials
-are licensed and made available under the terms and conditions of the BSD License
-which accompanies this distribution.  The full text of the license may be found at
-http://opensource.org/licenses/bsd-license.php
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#ifndef __HOT_PLUG_DEVICE_H__
-#define __HOT_PLUG_DEVICE_H__
-
-#define HOT_PLUG_DEVICE_GUID    \
-    { 0x220ac432, 0x1d43, 0x49e5, {0xa7, 0x4f, 0x4c, 0x9d, 0xa6, 0x7a, 0xd2, 0x3b } }
-
-extern EFI_GUID gEfiHotPlugDeviceGuid;
-#endif

MdeModulePkg/MdeModulePkg.dec

@@ -269,10 +269,6 @@
   ## Include/Protocol/SimpleTextInExNotify.h
   gSimpleTextInExNotifyGuid      = { 0x856f2def, 0x4e93, 0x4d6b, { 0x94, 0xce, 0x1c, 0xfe, 0x47, 0x01, 0x3e, 0xa5 }}  
 
-  ## Protocol Guid specify the device is the hot plug device.
-  ## Include/Protocol/HotPlugDevice.h
-  gEfiHotPlugDeviceGuid          = { 0x220AC432, 0x1D43, 0x49E5, { 0xA7, 0x4F, 0x4C, 0x9D, 0xA6, 0x7A, 0xD2, 0x3B }}
-
 [PcdsFeatureFlag.common]
   ## Indicate whether platform can support update capsule across a system reset
   gEfiMdeModulePkgTokenSpaceGuid.PcdSupportUpdateCapsuleReset|FALSE|BOOLEAN|0x0001001d

MdeModulePkg/Universal/Console/ConPlatformDxe/ConPlatform.c

@@ -256,7 +256,7 @@ ConPlatformTextInDriverBindingStart (
     return Status;
   }
   //
-  // Check the device handle, if it is a hot plug device,
+  // Check the device path, if it is a hot plug device,
   // do not put the device path into ConInDev, and install
   // gEfiConsoleInDeviceGuid to the device handle directly.
   // The policy is, make hot plug device plug in and play immediately.
@@ -373,7 +373,7 @@ ConPlatformTextOutDriverBindingStart (
     return Status;
   }
   //
-  // Check the device handle, if it is a hot plug device,
+  // Check the device path, if it is a hot plug device,
   // do not put the device path into ConOutDev and ErrOutDev,
   // and install gEfiConsoleOutDeviceGuid to the device handle directly.
   // The policy is, make hot plug device plug in and play immediately.
@@ -953,24 +953,31 @@ IsHotPlugDevice (
   IN  EFI_DEVICE_PATH_PROTOCOL    *DevicePath
   )
 {
-  //
+  EFI_DEVICE_PATH_PROTOCOL     *CheckDevicePath;
-  // Check device whether is hot plug device or not throught Device Path
+
-  // 
+  CheckDevicePath = DevicePath;
-  if ((DevicePathType (DevicePath) == MESSAGING_DEVICE_PATH) &&
+  while (!IsDevicePathEnd (CheckDevicePath)) {
-      (DevicePathSubType (DevicePath) == MSG_USB_DP ||
-       DevicePathSubType (DevicePath) == MSG_USB_CLASS_DP ||
-       DevicePathSubType (DevicePath) == MSG_USB_WWID_DP)) {
     //
-    // If Device is USB device
+    // Check device whether is hot plug device or not throught Device Path
-    //
+    // 
-    return TRUE;
+    if ((DevicePathType (CheckDevicePath) == MESSAGING_DEVICE_PATH) &&
-  }
+        (DevicePathSubType (CheckDevicePath) == MSG_USB_DP ||
-  if ((DevicePathType (DevicePath) == HARDWARE_DEVICE_PATH) &&
+         DevicePathSubType (CheckDevicePath) == MSG_USB_CLASS_DP ||
-      (DevicePathSubType (DevicePath) == HW_PCCARD_DP)) {
+         DevicePathSubType (CheckDevicePath) == MSG_USB_WWID_DP)) {
-    //
+      //
-    // If Device is PCCard
+      // If Device is USB device
-    //
+      //
-    return TRUE;
+      return TRUE;
+    }
+    if ((DevicePathType (CheckDevicePath) == HARDWARE_DEVICE_PATH) &&
+        (DevicePathSubType (CheckDevicePath) == HW_PCCARD_DP)) {
+      //
+      // If Device is PCCard
+      //
+      return TRUE;
+    }
+  
+    CheckDevicePath = NextDevicePathNode (CheckDevicePath);
   }
 
   return FALSE;

MdeModulePkg/Universal/Console/ConPlatformDxe/ConPlatform.h

@@ -20,7 +20,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Protocol/SimpleTextOut.h>
 #include <Protocol/DevicePath.h>
 #include <Protocol/SimpleTextIn.h>
-#include <Protocol/HotPlugDevice.h>
 
 #include <Guid/GlobalVariable.h>
 #include <Guid/ConsoleInDevice.h>

MdeModulePkg/Universal/Console/TerminalDxe/Terminal.c

@@ -300,19 +300,12 @@ TerminalDriverBindingStart (
       if (EFI_ERROR (Status)) {
         goto Error;
       }
-      //
+
-      // if the serial device is a hot plug device, do not update the
+      if (IsHotPlugDevice (ParentDevicePath)) {
-      // ConInDev, ConOutDev, and StdErrDev variables.
+        //
-      //
+        // if the serial device is a hot plug device, do not update the
-      Status = gBS->OpenProtocol (
+        // ConInDev, ConOutDev, and StdErrDev variables.
-                      Controller,
+        //
-                      &gEfiHotPlugDeviceGuid,
-                      NULL,
-                      This->DriverBindingHandle,
-                      Controller,
-                      EFI_OPEN_PROTOCOL_TEST_PROTOCOL
-                      );
-      if (EFI_ERROR (Status)) {
         TerminalUpdateConsoleDevVariable (L"ConInDev", ParentDevicePath);
         TerminalUpdateConsoleDevVariable (L"ConOutDev", ParentDevicePath);
         TerminalUpdateConsoleDevVariable (L"ErrOutDev", ParentDevicePath);
@@ -627,26 +620,7 @@ TerminalDriverBindingStart (
   if (EFI_ERROR (Status)) {
     goto Error;
   }
-  //
+
-  // if the serial device is a hot plug device, attaches the HotPlugGuid
-  // onto the terminal device handle.
-  //
-  Status = gBS->OpenProtocol (
-                  Controller,
-                  &gEfiHotPlugDeviceGuid,
-                  NULL,
-                  This->DriverBindingHandle,
-                  Controller,
-                  EFI_OPEN_PROTOCOL_TEST_PROTOCOL
-                  );
-  if (!EFI_ERROR (Status)) {
-    Status = gBS->InstallMultipleProtocolInterfaces (
-                    &TerminalDevice->Handle,
-                    &gEfiHotPlugDeviceGuid,
-                    NULL,
-                    NULL
-                    );
-  }
   //
   // Register the Parent-Child relationship via
   // EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.
@@ -886,25 +860,6 @@ TerminalDriverBindingStop (
           FreeUnicodeStringTable (TerminalDevice->ControllerNameTable);
         }
 
-        Status = gBS->OpenProtocol (
-                        ChildHandleBuffer[Index],
-                        &gEfiHotPlugDeviceGuid,
-                        NULL,
-                        This->DriverBindingHandle,
-                        Controller,
-                        EFI_OPEN_PROTOCOL_TEST_PROTOCOL
-                        );
-        if (!EFI_ERROR (Status)) {
-          Status = gBS->UninstallMultipleProtocolInterfaces (
-                          ChildHandleBuffer[Index],
-                          &gEfiHotPlugDeviceGuid,
-                          NULL,
-                          NULL
-                          );
-        } else {
-          Status = EFI_SUCCESS;
-        }
-
         gBS->CloseEvent (TerminalDevice->TwoSecondTimeOut);
         gBS->CloseEvent (TerminalDevice->SimpleInput.WaitForKey);
         gBS->CloseEvent (TerminalDevice->SimpleInputEx.WaitForKeyEx);
@@ -1322,3 +1277,50 @@ InitializeTerminal(
 
   return Status;
 }
+
+/**
+  Check if the device supports hot-plug through its device path.
+
+  This function could be updated to check more types of Hot Plug devices.
+  Currently, it checks USB and PCCard device.
+
+  @param  DevicePath            Pointer to device's device path.
+
+  @retval TRUE                  The devcie is a hot-plug device
+  @retval FALSE                 The devcie is not a hot-plug device.
+
+**/
+BOOLEAN
+IsHotPlugDevice (
+  IN  EFI_DEVICE_PATH_PROTOCOL    *DevicePath
+  )
+{
+  EFI_DEVICE_PATH_PROTOCOL     *CheckDevicePath;
+
+  CheckDevicePath = DevicePath;
+  while (!IsDevicePathEnd (CheckDevicePath)) {
+    //
+    // Check device whether is hot plug device or not throught Device Path
+    // 
+    if ((DevicePathType (CheckDevicePath) == MESSAGING_DEVICE_PATH) &&
+        (DevicePathSubType (CheckDevicePath) == MSG_USB_DP ||
+         DevicePathSubType (CheckDevicePath) == MSG_USB_CLASS_DP ||
+         DevicePathSubType (CheckDevicePath) == MSG_USB_WWID_DP)) {
+      //
+      // If Device is USB device
+      //
+      return TRUE;
+    }
+    if ((DevicePathType (CheckDevicePath) == HARDWARE_DEVICE_PATH) &&
+        (DevicePathSubType (CheckDevicePath) == HW_PCCARD_DP)) {
+      //
+      // If Device is PCCard
+      //
+      return TRUE;
+    }
+  
+    CheckDevicePath = NextDevicePathNode (CheckDevicePath);
+  }
+
+  return FALSE;
+}

MdeModulePkg/Universal/Console/TerminalDxe/Terminal.h

@@ -22,7 +22,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Guid/PcAnsi.h>
 
 #include <Protocol/SimpleTextInExNotify.h>
-#include <Protocol/HotPlugDevice.h>
 #include <Protocol/SimpleTextOut.h>
 #include <Protocol/SerialIo.h>
 #include <Protocol/DevicePath.h>
@@ -1347,4 +1346,21 @@ TerminalIsValidEfiCntlChar (
   IN  CHAR16  CharC
   );
 
+/**
+  Check if the device supports hot-plug through its device path.
+
+  This function could be updated to check more types of Hot Plug devices.
+  Currently, it checks USB and PCCard device.
+
+  @param  DevicePath            Pointer to device's device path.
+
+  @retval TRUE                  The devcie is a hot-plug device
+  @retval FALSE                 The devcie is not a hot-plug device.
+
+**/
+BOOLEAN
+IsHotPlugDevice (
+  IN  EFI_DEVICE_PATH_PROTOCOL    *DevicePath
+  );
+
 #endif

MdeModulePkg/Universal/Console/TerminalDxe/TerminalDxe.inf

@@ -73,7 +73,6 @@
   gEfiSimpleTextInputExProtocolGuid             ## BY_START
   gEfiSimpleTextOutProtocolGuid                 ## BY_START
   gSimpleTextInExNotifyGuid                     ## SOMETIMES_CONSUMES
-  gEfiHotPlugDeviceGuid                         ## SOMETIMES_CONSUMES
 
 [Pcd]
   gEfiMdePkgTokenSpaceGuid.PcdStatusCodeValueRemoteConsoleError