MdePkg: Add UEFI2.5 Ramdisk device path definition

[mirror_edk2.git] / MdePkg / Include / Protocol / ServiceBinding.h

diff --git a/MdePkg/Include/Protocol/ServiceBinding.h b/MdePkg/Include/Protocol/ServiceBinding.h
index afd25efb5706356f75b668974391d1f9f0c5e0eb..34ac2f667d77669fda18b8c3cfb9665ade1a9606 100644 (file)
--- a/MdePkg/Include/Protocol/ServiceBinding.h
+++ b/MdePkg/Include/Protocol/ServiceBinding.h
@@ -1,11 +1,12 @@
-/** @file\r
+/** @file  \r
+  UEFI Service Binding Protocol is defined in UEFI specification.\r
 \r
   The file defines the generic Service Binding Protocol functions.\r
   It provides services that are required to create and destroy child \r
   handles that support a given set of protocols.\r
 \r
-  Copyright (c) 2006 - 2008, Intel Corporation                                                         \r
-  All rights reserved. This program and the accompanying materials                          \r
+  Copyright (c) 2006 - 2011, 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
   http://opensource.org/licenses/bsd-license.php                                            \r
@@ -24,14 +25,18 @@
 typedef struct _EFI_SERVICE_BINDING_PROTOCOL EFI_SERVICE_BINDING_PROTOCOL;\r
 \r
 /**\r
-  Creates a child handle with a set of I/O services.\r
-\r
-  @param  This        Protocol instance pointer.\r
-  @param  ChildHandle Pointer to the handle of the child to create.  If it is NULL,\r
-                      then a new handle is created.  If it is not NULL, then the\r
-                      I/O services are added to the existing child handle.\r
-\r
-  @retval EFI_SUCCES            The child handle was created with the I/O services\r
+  Creates a child handle and installs a protocol.\r
+  \r
+  The CreateChild() function installs a protocol on ChildHandle. \r
+  If ChildHandle is a pointer to NULL, then a new handle is created and returned in ChildHandle. \r
+  If ChildHandle is not a pointer to NULL, then the protocol installs on the existing ChildHandle.\r
+\r
+  @param  This        Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance.\r
+  @param  ChildHandle Pointer to the handle of the child to create. If it is NULL,\r
+                      then a new handle is created. If it is a pointer to an existing UEFI handle, \r
+                      then the protocol is added to the existing UEFI handle.\r
+\r
+  @retval EFI_SUCCES            The protocol was added to ChildHandle.\r
   @retval EFI_INVALID_PARAMETER ChildHandle is NULL.\r
   @retval EFI_OUT_OF_RESOURCES  There are not enough resources availabe to create\r
                                 the child\r
@@ -46,17 +51,20 @@ EFI_STATUS
   );\r
 \r
 /**\r
-  Destroys a child handle with a set of I/O services.\r
+  Destroys a child handle with a protocol installed on it.\r
+  \r
+  The DestroyChild() function does the opposite of CreateChild(). It removes a protocol \r
+  that was installed by CreateChild() from ChildHandle. If the removed protocol is the \r
+  last protocol on ChildHandle, then ChildHandle is destroyed.\r
 \r
-  @param  This        Protocol instance pointer.\r
+  @param  This        Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance.\r
   @param  ChildHandle Handle of the child to destroy\r
 \r
-  @retval EFI_SUCCES            The I/O services were removed from the child handle\r
-  @retval EFI_UNSUPPORTED       The child handle does not support the I/O services\r
-                                that are being removed.\r
-  @retval EFI_INVALID_PARAMETER Child handle is not a valid EFI Handle.\r
-  @retval EFI_ACCESS_DENIED     The child handle could not be destroyed because its\r
-                                I/O services are being used.\r
+  @retval EFI_SUCCES            The protocol was removed from ChildHandle.\r
+  @retval EFI_UNSUPPORTED       ChildHandle does not support the protocol that is being removed.\r
+  @retval EFI_INVALID_PARAMETER Child handle is NULL.\r
+  @retval EFI_ACCESS_DENIED     The protocol could not be removed from the ChildHandle\r
+                                because its services are being used.\r
   @retval other                 The child handle was not destroyed\r
 \r
 **/\r