MdeModulePkg/Bus/Sd/EmmcDxe/ComponentName.c

   1 /** @file
   2   UEFI Component Name(2) protocol implementation for EmmcDxe driver.
   3
   4   Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
   5   This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #include "EmmcDxe.h"
  16
  17 //
  18 // Driver name table
  19 //
  20 GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE mEmmcDxeDriverNameTable[] = {
  21   { "eng;en", L"Edkii Emmc Device Driver" },
  22   { NULL , NULL }
  23 };
  24
  25 //
  26 // Controller name table
  27 //
  28 GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE mEmmcDxeControllerNameTable[] = {
  29   { "eng;en", L"Edkii Emmc Host Controller" },
  30   { NULL , NULL }
  31 };
  32
  33 //
  34 // EFI Component Name Protocol
  35 //
  36 GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME_PROTOCOL  gEmmcDxeComponentName = {
  37   EmmcDxeComponentNameGetDriverName,
  38   EmmcDxeComponentNameGetControllerName,
  39   "eng"
  40 };
  41
  42 //
  43 // EFI Component Name 2 Protocol
  44 //
  45 GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME2_PROTOCOL gEmmcDxeComponentName2 = {
  46   (EFI_COMPONENT_NAME2_GET_DRIVER_NAME) EmmcDxeComponentNameGetDriverName,
  47   (EFI_COMPONENT_NAME2_GET_CONTROLLER_NAME) EmmcDxeComponentNameGetControllerName,
  48   "en"
  49 };
  50
  51 /**
  52   Retrieves a Unicode string that is the user readable name of the driver.
  53
  54   This function retrieves the user readable name of a driver in the form of a
  55   Unicode string. If the driver specified by This has a user readable name in
  56   the language specified by Language, then a pointer to the driver name is
  57   returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
  58   by This does not support the language specified by Language,
  59   then EFI_UNSUPPORTED is returned.
  60
  61   @param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
  62                                 EFI_COMPONENT_NAME_PROTOCOL instance.
  63
  64   @param  Language[in]          A pointer to a Null-terminated ASCII string
  65                                 array indicating the language. This is the
  66                                 language of the driver name that the caller is
  67                                 requesting, and it must match one of the
  68                                 languages specified in SupportedLanguages. The
  69                                 number of languages supported by a driver is up
  70                                 to the driver writer. Language is specified
  71                                 in RFC 4646 or ISO 639-2 language code format.
  72
  73   @param  DriverName[out]       A pointer to the Unicode string to return.
  74                                 This Unicode string is the name of the
  75                                 driver specified by This in the language
  76                                 specified by Language.
  77
  78   @retval EFI_SUCCESS           The Unicode string for the Driver specified by
  79                                 This and the language specified by Language was
  80                                 returned in DriverName.
  81
  82   @retval EFI_INVALID_PARAMETER Language is NULL.
  83
  84   @retval EFI_INVALID_PARAMETER DriverName is NULL.
  85
  86   @retval EFI_UNSUPPORTED       The driver specified by This does not support
  87                                 the language specified by Language.
  88
  89 **/
  90 EFI_STATUS
  91 EFIAPI
  92 EmmcDxeComponentNameGetDriverName (
  93   IN  EFI_COMPONENT_NAME_PROTOCOL  *This,
  94   IN  CHAR8                        *Language,
  95   OUT CHAR16                       **DriverName
  96   )
  97 {
  98   return LookupUnicodeString2 (
  99            Language,
 100            This->SupportedLanguages,
 101            mEmmcDxeDriverNameTable,
 102            DriverName,
 103            (BOOLEAN)(This == &gEmmcDxeComponentName)
 104            );
 105
 106 }
 107
 108 /**
 109   Retrieves a Unicode string that is the user readable name of the controller
 110   that is being managed by a driver.
 111
 112   This function retrieves the user readable name of the controller specified by
 113   ControllerHandle and ChildHandle in the form of a Unicode string. If the
 114   driver specified by This has a user readable name in the language specified by
 115   Language, then a pointer to the controller name is returned in ControllerName,
 116   and EFI_SUCCESS is returned.  If the driver specified by This is not currently
 117   managing the controller specified by ControllerHandle and ChildHandle,
 118   then EFI_UNSUPPORTED is returned.  If the driver specified by This does not
 119   support the language specified by Language, then EFI_UNSUPPORTED is returned.
 120
 121   @param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
 122                                 EFI_COMPONENT_NAME_PROTOCOL instance.
 123
 124   @param  ControllerHandle[in]  The handle of a controller that the driver
 125                                 specified by This is managing.  This handle
 126                                 specifies the controller whose name is to be
 127                                 returned.
 128
 129   @param  ChildHandle[in]       The handle of the child controller to retrieve
 130                                 the name of.  This is an optional parameter that
 131                                 may be NULL.  It will be NULL for device
 132                                 drivers.  It will also be NULL for a bus drivers
 133                                 that wish to retrieve the name of the bus
 134                                 controller.  It will not be NULL for a bus
 135                                 driver that wishes to retrieve the name of a
 136                                 child controller.
 137
 138   @param  Language[in]          A pointer to a Null-terminated ASCII string
 139                                 array indicating the language.  This is the
 140                                 language of the driver name that the caller is
 141                                 requesting, and it must match one of the
 142                                 languages specified in SupportedLanguages. The
 143                                 number of languages supported by a driver is up
 144                                 to the driver writer. Language is specified in
 145                                 RFC 4646 or ISO 639-2 language code format.
 146
 147   @param  ControllerName[out]   A pointer to the Unicode string to return.
 148                                 This Unicode string is the name of the
 149                                 controller specified by ControllerHandle and
 150                                 ChildHandle in the language specified by
 151                                 Language from the point of view of the driver
 152                                 specified by This.
 153
 154   @retval EFI_SUCCESS           The Unicode string for the user readable name in
 155                                 the language specified by Language for the
 156                                 driver specified by This was returned in
 157                                 DriverName.
 158
 159   @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
 160
 161   @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
 162                                 EFI_HANDLE.
 163
 164   @retval EFI_INVALID_PARAMETER Language is NULL.
 165
 166   @retval EFI_INVALID_PARAMETER ControllerName is NULL.
 167
 168   @retval EFI_UNSUPPORTED       The driver specified by This is not currently
 169                                 managing the controller specified by
 170                                 ControllerHandle and ChildHandle.
 171
 172   @retval EFI_UNSUPPORTED       The driver specified by This does not support
 173                                 the language specified by Language.
 174
 175 **/
 176 EFI_STATUS
 177 EFIAPI
 178 EmmcDxeComponentNameGetControllerName (
 179   IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,
 180   IN  EFI_HANDLE                                      ControllerHandle,
 181   IN  EFI_HANDLE                                      ChildHandle        OPTIONAL,
 182   IN  CHAR8                                           *Language,
 183   OUT CHAR16                                          **ControllerName
 184   )
 185 {
 186   EFI_STATUS                Status;
 187   EFI_BLOCK_IO_PROTOCOL     *BlockIo;
 188   EMMC_DEVICE               *Device;
 189   EMMC_PARTITION            *Partition;
 190   EFI_UNICODE_STRING_TABLE  *ControllerNameTable;
 191
 192   //
 193   // Make sure this driver is currently managing ControllHandle
 194   //
 195   Status = EfiTestManagedDevice (
 196              ControllerHandle,
 197              gEmmcDxeDriverBinding.DriverBindingHandle,
 198              &gEfiSdMmcPassThruProtocolGuid
 199              );
 200   if (EFI_ERROR (Status)) {
 201     return Status;
 202   }
 203
 204   ControllerNameTable = mEmmcDxeControllerNameTable;
 205   if (ChildHandle != NULL) {
 206     Status = EfiTestChildHandle (
 207                ControllerHandle,
 208                ChildHandle,
 209                &gEfiSdMmcPassThruProtocolGuid
 210                );
 211     if (EFI_ERROR (Status)) {
 212       return Status;
 213     }
 214     //
 215     // Get the child context
 216     //
 217     Status = gBS->OpenProtocol (
 218                     ChildHandle,
 219                     &gEfiBlockIoProtocolGuid,
 220                     (VOID **) &BlockIo,
 221                     gEmmcDxeDriverBinding.DriverBindingHandle,
 222                     ChildHandle,
 223                     EFI_OPEN_PROTOCOL_GET_PROTOCOL
 224                     );
 225     if (EFI_ERROR (Status)) {
 226       return EFI_UNSUPPORTED;
 227     }
 228
 229     Partition = EMMC_PARTITION_DATA_FROM_BLKIO (BlockIo);
 230     Device    = Partition->Device;
 231     ControllerNameTable = Device->ControllerNameTable;
 232   }
 233
 234   return LookupUnicodeString2 (
 235            Language,
 236            This->SupportedLanguages,
 237            ControllerNameTable,
 238            ControllerName,
 239            (BOOLEAN)(This == &gEmmcDxeComponentName)
 240            );}
 241