MdeModulePkg/Bus/Sd/SdDxe/ComponentName.c

   1 /** @file
   2   UEFI Component Name(2) protocol implementation for SdDxe driver.
   3
   4   Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9 #include "SdDxe.h"
  10
  11 //
  12 // Driver name table
  13 //
  14 GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE mSdDxeDriverNameTable[] = {
  15   { "eng;en", L"Edkii Sd Memory Card Device Driver" },
  16   { NULL , NULL }
  17 };
  18
  19 //
  20 // Controller name table
  21 //
  22 GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE mSdDxeControllerNameTable[] = {
  23   { "eng;en", L"Edkii Sd Host Controller" },
  24   { NULL , NULL }
  25 };
  26
  27 //
  28 // EFI Component Name Protocol
  29 //
  30 GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME_PROTOCOL  gSdDxeComponentName = {
  31   SdDxeComponentNameGetDriverName,
  32   SdDxeComponentNameGetControllerName,
  33   "eng"
  34 };
  35
  36 //
  37 // EFI Component Name 2 Protocol
  38 //
  39 GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME2_PROTOCOL gSdDxeComponentName2 = {
  40   (EFI_COMPONENT_NAME2_GET_DRIVER_NAME) SdDxeComponentNameGetDriverName,
  41   (EFI_COMPONENT_NAME2_GET_CONTROLLER_NAME) SdDxeComponentNameGetControllerName,
  42   "en"
  43 };
  44
  45 /**
  46   Retrieves a Unicode string that is the user readable name of the driver.
  47
  48   This function retrieves the user readable name of a driver in the form of a
  49   Unicode string. If the driver specified by This has a user readable name in
  50   the language specified by Language, then a pointer to the driver name is
  51   returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
  52   by This does not support the language specified by Language,
  53   then EFI_UNSUPPORTED is returned.
  54
  55   @param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
  56                                 EFI_COMPONENT_NAME_PROTOCOL instance.
  57
  58   @param  Language[in]          A pointer to a Null-terminated ASCII string
  59                                 array indicating the language. This is the
  60                                 language of the driver name that the caller is
  61                                 requesting, and it must match one of the
  62                                 languages specified in SupportedLanguages. The
  63                                 number of languages supported by a driver is up
  64                                 to the driver writer. Language is specified
  65                                 in RFC 4646 or ISO 639-2 language code format.
  66
  67   @param  DriverName[out]       A pointer to the Unicode string to return.
  68                                 This Unicode string is the name of the
  69                                 driver specified by This in the language
  70                                 specified by Language.
  71
  72   @retval EFI_SUCCESS           The Unicode string for the Driver specified by
  73                                 This and the language specified by Language was
  74                                 returned in DriverName.
  75
  76   @retval EFI_INVALID_PARAMETER Language is NULL.
  77
  78   @retval EFI_INVALID_PARAMETER DriverName is NULL.
  79
  80   @retval EFI_UNSUPPORTED       The driver specified by This does not support
  81                                 the language specified by Language.
  82
  83 **/
  84 EFI_STATUS
  85 EFIAPI
  86 SdDxeComponentNameGetDriverName (
  87   IN  EFI_COMPONENT_NAME_PROTOCOL  *This,
  88   IN  CHAR8                        *Language,
  89   OUT CHAR16                       **DriverName
  90   )
  91 {
  92   return LookupUnicodeString2 (
  93            Language,
  94            This->SupportedLanguages,
  95            mSdDxeDriverNameTable,
  96            DriverName,
  97            (BOOLEAN)(This == &gSdDxeComponentName)
  98            );
  99
 100 }
 101
 102 /**
 103   Retrieves a Unicode string that is the user readable name of the controller
 104   that is being managed by a driver.
 105
 106   This function retrieves the user readable name of the controller specified by
 107   ControllerHandle and ChildHandle in the form of a Unicode string. If the
 108   driver specified by This has a user readable name in the language specified by
 109   Language, then a pointer to the controller name is returned in ControllerName,
 110   and EFI_SUCCESS is returned.  If the driver specified by This is not currently
 111   managing the controller specified by ControllerHandle and ChildHandle,
 112   then EFI_UNSUPPORTED is returned.  If the driver specified by This does not
 113   support the language specified by Language, then EFI_UNSUPPORTED is returned.
 114
 115   @param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
 116                                 EFI_COMPONENT_NAME_PROTOCOL instance.
 117
 118   @param  ControllerHandle[in]  The handle of a controller that the driver
 119                                 specified by This is managing.  This handle
 120                                 specifies the controller whose name is to be
 121                                 returned.
 122
 123   @param  ChildHandle[in]       The handle of the child controller to retrieve
 124                                 the name of.  This is an optional parameter that
 125                                 may be NULL.  It will be NULL for device
 126                                 drivers.  It will also be NULL for a bus drivers
 127                                 that wish to retrieve the name of the bus
 128                                 controller.  It will not be NULL for a bus
 129                                 driver that wishes to retrieve the name of a
 130                                 child controller.
 131
 132   @param  Language[in]          A pointer to a Null-terminated ASCII string
 133                                 array indicating the language.  This is the
 134                                 language of the driver name that the caller is
 135                                 requesting, and it must match one of the
 136                                 languages specified in SupportedLanguages. The
 137                                 number of languages supported by a driver is up
 138                                 to the driver writer. Language is specified in
 139                                 RFC 4646 or ISO 639-2 language code format.
 140
 141   @param  ControllerName[out]   A pointer to the Unicode string to return.
 142                                 This Unicode string is the name of the
 143                                 controller specified by ControllerHandle and
 144                                 ChildHandle in the language specified by
 145                                 Language from the point of view of the driver
 146                                 specified by This.
 147
 148   @retval EFI_SUCCESS           The Unicode string for the user readable name in
 149                                 the language specified by Language for the
 150                                 driver specified by This was returned in
 151                                 DriverName.
 152
 153   @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
 154
 155   @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
 156                                 EFI_HANDLE.
 157
 158   @retval EFI_INVALID_PARAMETER Language is NULL.
 159
 160   @retval EFI_INVALID_PARAMETER ControllerName is NULL.
 161
 162   @retval EFI_UNSUPPORTED       The driver specified by This is not currently
 163                                 managing the controller specified by
 164                                 ControllerHandle and ChildHandle.
 165
 166   @retval EFI_UNSUPPORTED       The driver specified by This does not support
 167                                 the language specified by Language.
 168
 169 **/
 170 EFI_STATUS
 171 EFIAPI
 172 SdDxeComponentNameGetControllerName (
 173   IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,
 174   IN  EFI_HANDLE                                      ControllerHandle,
 175   IN  EFI_HANDLE                                      ChildHandle        OPTIONAL,
 176   IN  CHAR8                                           *Language,
 177   OUT CHAR16                                          **ControllerName
 178   )
 179 {
 180   EFI_STATUS                Status;
 181   EFI_BLOCK_IO_PROTOCOL     *BlockIo;
 182   SD_DEVICE                 *Device;
 183   EFI_UNICODE_STRING_TABLE  *ControllerNameTable;
 184
 185   //
 186   // Make sure this driver is currently managing ControllHandle
 187   //
 188   Status = EfiTestManagedDevice (
 189              ControllerHandle,
 190              gSdDxeDriverBinding.DriverBindingHandle,
 191              &gEfiSdMmcPassThruProtocolGuid
 192              );
 193   if (EFI_ERROR (Status)) {
 194     return Status;
 195   }
 196
 197   ControllerNameTable = mSdDxeControllerNameTable;
 198   if (ChildHandle != NULL) {
 199     Status = EfiTestChildHandle (
 200                ControllerHandle,
 201                ChildHandle,
 202                &gEfiSdMmcPassThruProtocolGuid
 203                );
 204     if (EFI_ERROR (Status)) {
 205       return Status;
 206     }
 207     //
 208     // Get the child context
 209     //
 210     Status = gBS->OpenProtocol (
 211                     ChildHandle,
 212                     &gEfiBlockIoProtocolGuid,
 213                     (VOID **) &BlockIo,
 214                     gSdDxeDriverBinding.DriverBindingHandle,
 215                     ChildHandle,
 216                     EFI_OPEN_PROTOCOL_GET_PROTOCOL
 217                     );
 218     if (EFI_ERROR (Status)) {
 219       return EFI_UNSUPPORTED;
 220     }
 221
 222     Device = SD_DEVICE_DATA_FROM_BLKIO (BlockIo);
 223     ControllerNameTable = Device->ControllerNameTable;
 224   }
 225
 226   return LookupUnicodeString2 (
 227            Language,
 228            This->SupportedLanguages,
 229            ControllerNameTable,
 230            ControllerName,
 231            (BOOLEAN)(This == &gSdDxeComponentName)
 232            );
 233 }
 234