Nt32Pkg/WinNtBlockIoDxe/ComponentName.c

   1 /*++
   2
   3 Copyright (c) 2006, Intel Corporation
   4 All rights reserved. This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 Module Name:
  13
  14   ComponentName.c
  15
  16 Abstract:
  17
  18 --*/
  19 #include <Uefi.h>
  20 #include <WinNtDxe.h>
  21 #include <Protocol/ComponentName.h>
  22 #include <Protocol/DriverBinding.h>
  23
  24 #include "WinNtBlockIo.h"
  25
  26 //
  27 // EFI Component Name Functions
  28 //
  29 EFI_STATUS
  30 EFIAPI
  31 WinNtBlockIoComponentNameGetDriverName (
  32   IN  EFI_COMPONENT_NAME_PROTOCOL  *This,
  33   IN  CHAR8                        *Language,
  34   OUT CHAR16                       **DriverName
  35   );
  36
  37 EFI_STATUS
  38 EFIAPI
  39 WinNtBlockIoComponentNameGetControllerName (
  40   IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,
  41   IN  EFI_HANDLE                                      ControllerHandle,
  42   IN  EFI_HANDLE                                      ChildHandle        OPTIONAL,
  43   IN  CHAR8                                           *Language,
  44   OUT CHAR16                                          **ControllerName
  45   );
  46
  47 //
  48 // EFI Component Name Protocol
  49 //
  50 EFI_COMPONENT_NAME_PROTOCOL     gWinNtBlockIoComponentName = {
  51   WinNtBlockIoComponentNameGetDriverName,
  52   WinNtBlockIoComponentNameGetControllerName,
  53   "eng"
  54 };
  55
  56 static EFI_UNICODE_STRING_TABLE mWinNtBlockIoDriverNameTable[] = {
  57   { "eng", L"Windows Block I/O Driver" },
  58   { NULL , NULL }
  59 };
  60
  61 EFI_STATUS
  62 EFIAPI
  63 WinNtBlockIoComponentNameGetDriverName (
  64   IN  EFI_COMPONENT_NAME_PROTOCOL  *This,
  65   IN  CHAR8                        *Language,
  66   OUT CHAR16                       **DriverName
  67   )
  68 /*++
  69
  70   Routine Description:
  71     Retrieves a Unicode string that is the user readable name of the EFI Driver.
  72
  73   Arguments:
  74     This       - A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
  75     Language   - A pointer to a three character ISO 639-2 language identifier.
  76                  This is the language of the driver name that that the caller
  77                  is requesting, and it must match one of the languages specified
  78                  in SupportedLanguages.  The number of languages supported by a
  79                  driver is up to the driver writer.
  80     DriverName - A pointer to the Unicode string to return.  This Unicode string
  81                  is the name of the driver specified by This in the language
  82                  specified by Language.
  83
  84   Returns:
  85     EFI_SUCCESS           - The Unicode string for the Driver specified by This
  86                             and the language specified by Language was returned
  87                             in DriverName.
  88     EFI_INVALID_PARAMETER - Language is NULL.
  89     EFI_INVALID_PARAMETER - DriverName is NULL.
  90     EFI_UNSUPPORTED       - The driver specified by This does not support the
  91                             language specified by Language.
  92
  93 --*/
  94 {
  95   return LookupUnicodeString (
  96           Language,
  97           gWinNtBlockIoComponentName.SupportedLanguages,
  98           mWinNtBlockIoDriverNameTable,
  99           DriverName
 100           );
 101 }
 102
 103 EFI_STATUS
 104 EFIAPI
 105 WinNtBlockIoComponentNameGetControllerName (
 106   IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,
 107   IN  EFI_HANDLE                                      ControllerHandle,
 108   IN  EFI_HANDLE                                      ChildHandle        OPTIONAL,
 109   IN  CHAR8                                           *Language,
 110   OUT CHAR16                                          **ControllerName
 111   )
 112 /*++
 113
 114   Routine Description:
 115     Retrieves a Unicode string that is the user readable name of the controller
 116     that is being managed by an EFI Driver.
 117
 118   Arguments:
 119     This             - A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
 120     ControllerHandle - The handle of a controller that the driver specified by
 121                        This is managing.  This handle specifies the controller
 122                        whose name is to be returned.
 123     ChildHandle      - The handle of the child controller to retrieve the name
 124                        of.  This is an optional parameter that may be NULL.  It
 125                        will be NULL for device drivers.  It will also be NULL
 126                        for a bus drivers that wish to retrieve the name of the
 127                        bus controller.  It will not be NULL for a bus driver
 128                        that wishes to retrieve the name of a child controller.
 129     Language         - A pointer to a three character ISO 639-2 language
 130                        identifier.  This is the language of the controller name
 131                        that that the caller is requesting, and it must match one
 132                        of the languages specified in SupportedLanguages.  The
 133                        number of languages supported by a driver is up to the
 134                        driver writer.
 135     ControllerName   - A pointer to the Unicode string to return.  This Unicode
 136                        string is the name of the controller specified by
 137                        ControllerHandle and ChildHandle in the language specified
 138                        by Language from the point of view of the driver specified
 139                        by This.
 140
 141   Returns:
 142     EFI_SUCCESS           - The Unicode string for the user readable name in the
 143                             language specified by Language for the driver
 144                             specified by This was returned in DriverName.
 145     EFI_INVALID_PARAMETER - ControllerHandle is not a valid EFI_HANDLE.
 146     EFI_INVALID_PARAMETER - ChildHandle is not NULL and it is not a valid EFI_HANDLE.
 147     EFI_INVALID_PARAMETER - Language is NULL.
 148     EFI_INVALID_PARAMETER - ControllerName is NULL.
 149     EFI_UNSUPPORTED       - The driver specified by This is not currently managing
 150                             the controller specified by ControllerHandle and
 151                             ChildHandle.
 152     EFI_UNSUPPORTED       - The driver specified by This does not support the
 153                             language specified by Language.
 154
 155 --*/
 156 {
 157   EFI_STATUS              Status;
 158   EFI_BLOCK_IO_PROTOCOL   *BlockIo;
 159   WIN_NT_BLOCK_IO_PRIVATE *Private;
 160
 161   //
 162   // This is a device driver, so ChildHandle must be NULL.
 163   //
 164   if (ChildHandle != NULL) {
 165     return EFI_UNSUPPORTED;
 166   }
 167   //
 168   // Make sure this driver is currently managing ControllerHandle
 169   //
 170   Status = EfiTestManagedDevice (
 171              ControllerHandle,
 172              gWinNtBlockIoDriverBinding.DriverBindingHandle,
 173              &gEfiWinNtIoProtocolGuid
 174              );
 175   if (EFI_ERROR (Status)) {
 176     return EFI_UNSUPPORTED;
 177   }
 178   //
 179   // Get our context back
 180   //
 181   Status = gBS->OpenProtocol (
 182                   ControllerHandle,
 183                   &gEfiBlockIoProtocolGuid,
 184                   &BlockIo,
 185                   gWinNtBlockIoDriverBinding.DriverBindingHandle,
 186                   ControllerHandle,
 187                   EFI_OPEN_PROTOCOL_GET_PROTOCOL
 188                   );
 189   if (EFI_ERROR (Status)) {
 190     return EFI_UNSUPPORTED;
 191   }
 192
 193   Private = WIN_NT_BLOCK_IO_PRIVATE_DATA_FROM_THIS (BlockIo);
 194
 195   return LookupUnicodeString (
 196           Language,
 197           gWinNtBlockIoComponentName.SupportedLanguages,
 198           Private->ControllerNameTable,
 199           ControllerName
 200           );
 201 }