MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/ComponentName.c

   1 /** @file
   2   UEFI Component Name(2) protocol implementation for SD/MMC host controller 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 "SdMmcPciHcDxe.h"
  10
  11 //
  12 // EFI Component Name Protocol
  13 //
  14 GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME_PROTOCOL gSdMmcPciHcComponentName = {
  15   SdMmcPciHcComponentNameGetDriverName,
  16   SdMmcPciHcComponentNameGetControllerName,
  17   "eng"
  18 };
  19
  20 //
  21 // EFI Component Name 2 Protocol
  22 //
  23 GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME2_PROTOCOL gSdMmcPciHcComponentName2 = {
  24   (EFI_COMPONENT_NAME2_GET_DRIVER_NAME)     SdMmcPciHcComponentNameGetDriverName,
  25   (EFI_COMPONENT_NAME2_GET_CONTROLLER_NAME) SdMmcPciHcComponentNameGetControllerName,
  26   "en"
  27 };
  28
  29 GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE mSdMmcPciHcDriverNameTable[] = {
  30   { "eng;en", L"Edkii Sd/Mmc Host Controller Driver" },
  31   { NULL , NULL }
  32 };
  33
  34 GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE mSdMmcPciHcControllerNameTable[] = {
  35   { "eng;en", L"Edkii Sd/Mmc Host Controller" },
  36   { NULL , NULL }
  37 };
  38
  39 /**
  40   Retrieves a Unicode string that is the user readable name of the driver.
  41
  42   This function retrieves the user readable name of a driver in the form of a
  43   Unicode string. If the driver specified by This has a user readable name in
  44   the language specified by Language, then a pointer to the driver name is
  45   returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
  46   by This does not support the language specified by Language,
  47   then EFI_UNSUPPORTED is returned.
  48
  49   @param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
  50                                 EFI_COMPONENT_NAME_PROTOCOL instance.
  51
  52   @param  Language[in]          A pointer to a Null-terminated ASCII string
  53                                 array indicating the language. This is the
  54                                 language of the driver name that the caller is
  55                                 requesting, and it must match one of the
  56                                 languages specified in SupportedLanguages. The
  57                                 number of languages supported by a driver is up
  58                                 to the driver writer. Language is specified
  59                                 in RFC 4646 or ISO 639-2 language code format.
  60
  61   @param  DriverName[out]       A pointer to the Unicode string to return.
  62                                 This Unicode string is the name of the
  63                                 driver specified by This in the language
  64                                 specified by Language.
  65
  66   @retval EFI_SUCCESS           The Unicode string for the Driver specified by
  67                                 This and the language specified by Language was
  68                                 returned in DriverName.
  69
  70   @retval EFI_INVALID_PARAMETER Language is NULL.
  71
  72   @retval EFI_INVALID_PARAMETER DriverName is NULL.
  73
  74   @retval EFI_UNSUPPORTED       The driver specified by This does not support
  75                                 the language specified by Language.
  76
  77 **/
  78 EFI_STATUS
  79 EFIAPI
  80 SdMmcPciHcComponentNameGetDriverName (
  81   IN  EFI_COMPONENT_NAME_PROTOCOL     *This,
  82   IN  CHAR8                           *Language,
  83   OUT CHAR16                          **DriverName
  84   )
  85 {
  86   return LookupUnicodeString2 (
  87            Language,
  88            This->SupportedLanguages,
  89            mSdMmcPciHcDriverNameTable,
  90            DriverName,
  91            (BOOLEAN)(This == &gSdMmcPciHcComponentName)
  92            );
  93 }
  94
  95 /**
  96   Retrieves a Unicode string that is the user readable name of the controller
  97   that is being managed by a driver.
  98
  99   This function retrieves the user readable name of the controller specified by
 100   ControllerHandle and ChildHandle in the form of a Unicode string. If the
 101   driver specified by This has a user readable name in the language specified by
 102   Language, then a pointer to the controller name is returned in ControllerName,
 103   and EFI_SUCCESS is returned.  If the driver specified by This is not currently
 104   managing the controller specified by ControllerHandle and ChildHandle,
 105   then EFI_UNSUPPORTED is returned.  If the driver specified by This does not
 106   support the language specified by Language, then EFI_UNSUPPORTED is returned.
 107
 108   @param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
 109                                 EFI_COMPONENT_NAME_PROTOCOL instance.
 110
 111   @param  ControllerHandle[in]  The handle of a controller that the driver
 112                                 specified by This is managing.  This handle
 113                                 specifies the controller whose name is to be
 114                                 returned.
 115
 116   @param  ChildHandle[in]       The handle of the child controller to retrieve
 117                                 the name of.  This is an optional parameter that
 118                                 may be NULL.  It will be NULL for device
 119                                 drivers.  It will also be NULL for a bus drivers
 120                                 that wish to retrieve the name of the bus
 121                                 controller.  It will not be NULL for a bus
 122                                 driver that wishes to retrieve the name of a
 123                                 child controller.
 124
 125   @param  Language[in]          A pointer to a Null-terminated ASCII string
 126                                 array indicating the language.  This is the
 127                                 language of the driver name that the caller is
 128                                 requesting, and it must match one of the
 129                                 languages specified in SupportedLanguages. The
 130                                 number of languages supported by a driver is up
 131                                 to the driver writer. Language is specified in
 132                                 RFC 4646 or ISO 639-2 language code format.
 133
 134   @param  ControllerName[out]   A pointer to the Unicode string to return.
 135                                 This Unicode string is the name of the
 136                                 controller specified by ControllerHandle and
 137                                 ChildHandle in the language specified by
 138                                 Language from the point of view of the driver
 139                                 specified by This.
 140
 141   @retval EFI_SUCCESS           The Unicode string for the user readable name in
 142                                 the language specified by Language for the
 143                                 driver specified by This was returned in
 144                                 DriverName.
 145
 146   @retval EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE.
 147
 148   @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
 149                                 EFI_HANDLE.
 150
 151   @retval EFI_INVALID_PARAMETER Language is NULL.
 152
 153   @retval EFI_INVALID_PARAMETER ControllerName is NULL.
 154
 155   @retval EFI_UNSUPPORTED       The driver specified by This is not currently
 156                                 managing the controller specified by
 157                                 ControllerHandle and ChildHandle.
 158
 159   @retval EFI_UNSUPPORTED       The driver specified by This does not support
 160                                 the language specified by Language.
 161
 162 **/
 163 EFI_STATUS
 164 EFIAPI
 165 SdMmcPciHcComponentNameGetControllerName (
 166   IN  EFI_COMPONENT_NAME_PROTOCOL     *This,
 167   IN  EFI_HANDLE                      ControllerHandle,
 168   IN  EFI_HANDLE                      ChildHandle, OPTIONAL
 169   IN  CHAR8                           *Language,
 170   OUT CHAR16                          **ControllerName
 171   )
 172 {
 173   EFI_STATUS         Status;
 174
 175   if (Language == NULL || ControllerName == NULL) {
 176     return EFI_INVALID_PARAMETER;
 177   }
 178
 179   //
 180   // This is a device driver, so ChildHandle must be NULL.
 181   //
 182   if (ChildHandle != NULL) {
 183     return EFI_UNSUPPORTED;
 184   }
 185
 186   //
 187   // Make sure this driver is currently managing ControllerHandle
 188   //
 189   Status = EfiTestManagedDevice (
 190              ControllerHandle,
 191              gSdMmcPciHcDriverBinding.DriverBindingHandle,
 192              &gEfiPciIoProtocolGuid
 193              );
 194   if (EFI_ERROR (Status)) {
 195     return Status;
 196   }
 197
 198   return LookupUnicodeString2 (
 199            Language,
 200            This->SupportedLanguages,
 201            mSdMmcPciHcControllerNameTable,
 202            ControllerName,
 203            (BOOLEAN)(This == &gSdMmcPciHcComponentName)
 204            );
 205 }