EmulatorPkg/EmuBusDriverDxe/ComponentName.c

   1 /** @file
   2
   3 Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
   4 SPDX-License-Identifier: BSD-2-Clause-Patent
   5
   6 **/
   7
   8 #include "EmuBusDriverDxe.h"
   9
  10 //
  11 // EFI Component Name Functions
  12 //
  13 EFI_STATUS
  14 EFIAPI
  15 EmuBusDriverComponentNameGetDriverName (
  16   IN  EFI_COMPONENT_NAME_PROTOCOL  *This,
  17   IN  CHAR8                        *Language,
  18   OUT CHAR16                       **DriverName
  19   );
  20
  21 EFI_STATUS
  22 EFIAPI
  23 EmuBusDriverComponentNameGetControllerName (
  24   IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,
  25   IN  EFI_HANDLE                                      ControllerHandle,
  26   IN  EFI_HANDLE                                      ChildHandle        OPTIONAL,
  27   IN  CHAR8                                           *Language,
  28   OUT CHAR16                                          **ControllerName
  29   );
  30
  31 //
  32 // EFI Component Name Protocol
  33 //
  34 GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME_PROTOCOL     gEmuBusDriverComponentName = {
  35   EmuBusDriverComponentNameGetDriverName,
  36   EmuBusDriverComponentNameGetControllerName,
  37   "eng"
  38 };
  39
  40 //
  41 // EFI Component Name 2 Protocol
  42 //
  43 GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME2_PROTOCOL gEmuBusDriverComponentName2 = {
  44   (EFI_COMPONENT_NAME2_GET_DRIVER_NAME) EmuBusDriverComponentNameGetDriverName,
  45   (EFI_COMPONENT_NAME2_GET_CONTROLLER_NAME) EmuBusDriverComponentNameGetControllerName,
  46   "en"
  47 };
  48
  49 GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE mEmuBusDriverNameTable[] = {
  50   { "eng", L"Emu Bus Driver" },
  51   { NULL , NULL }
  52 };
  53
  54 /**
  55   Retrieves a Unicode string that is the user readable name of the driver.
  56
  57   This function retrieves the user readable name of a driver in the form of a
  58   Unicode string. If the driver specified by This has a user readable name in
  59   the language specified by Language, then a pointer to the driver name is
  60   returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
  61   by This does not support the language specified by Language,
  62   then EFI_UNSUPPORTED is returned.
  63
  64   @param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
  65                                 EFI_COMPONENT_NAME_PROTOCOL instance.
  66
  67   @param  Language[in]          A pointer to a Null-terminated ASCII string
  68                                 array indicating the language. This is the
  69                                 language of the driver name that the caller is
  70                                 requesting, and it must match one of the
  71                                 languages specified in SupportedLanguages. The
  72                                 number of languages supported by a driver is up
  73                                 to the driver writer. Language is specified
  74                                 in RFC 4646 or ISO 639-2 language code format.
  75
  76   @param  DriverName[out]       A pointer to the Unicode string to return.
  77                                 This Unicode string is the name of the
  78                                 driver specified by This in the language
  79                                 specified by Language.
  80
  81   @retval EFI_SUCCESS           The Unicode string for the Driver specified by
  82                                 This and the language specified by Language was
  83                                 returned in DriverName.
  84
  85   @retval EFI_INVALID_PARAMETER Language is NULL.
  86
  87   @retval EFI_INVALID_PARAMETER DriverName is NULL.
  88
  89   @retval EFI_UNSUPPORTED       The driver specified by This does not support
  90                                 the language specified by Language.
  91
  92 **/
  93 EFI_STATUS
  94 EFIAPI
  95 EmuBusDriverComponentNameGetDriverName (
  96   IN  EFI_COMPONENT_NAME_PROTOCOL  *This,
  97   IN  CHAR8                        *Language,
  98   OUT CHAR16                       **DriverName
  99   )
 100 {
 101   return LookupUnicodeString2 (
 102           Language,
 103           This->SupportedLanguages,
 104           mEmuBusDriverNameTable,
 105           DriverName,
 106           (BOOLEAN)(This == &gEmuBusDriverComponentName)
 107           );
 108 }
 109
 110 /**
 111   Retrieves a Unicode string that is the user readable name of the controller
 112   that is being managed by a driver.
 113
 114   This function retrieves the user readable name of the controller specified by
 115   ControllerHandle and ChildHandle in the form of a Unicode string. If the
 116   driver specified by This has a user readable name in the language specified by
 117   Language, then a pointer to the controller name is returned in ControllerName,
 118   and EFI_SUCCESS is returned.  If the driver specified by This is not currently
 119   managing the controller specified by ControllerHandle and ChildHandle,
 120   then EFI_UNSUPPORTED is returned.  If the driver specified by This does not
 121   support the language specified by Language, then EFI_UNSUPPORTED is returned.
 122
 123   @param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
 124                                 EFI_COMPONENT_NAME_PROTOCOL instance.
 125
 126   @param  ControllerHandle[in]  The handle of a controller that the driver
 127                                 specified by This is managing.  This handle
 128                                 specifies the controller whose name is to be
 129                                 returned.
 130
 131   @param  ChildHandle[in]       The handle of the child controller to retrieve
 132                                 the name of.  This is an optional parameter that
 133                                 may be NULL.  It will be NULL for device
 134                                 drivers.  It will also be NULL for a bus drivers
 135                                 that wish to retrieve the name of the bus
 136                                 controller.  It will not be NULL for a bus
 137                                 driver that wishes to retrieve the name of a
 138                                 child controller.
 139
 140   @param  Language[in]          A pointer to a Null-terminated ASCII string
 141                                 array indicating the language.  This is the
 142                                 language of the driver name that the caller is
 143                                 requesting, and it must match one of the
 144                                 languages specified in SupportedLanguages. The
 145                                 number of languages supported by a driver is up
 146                                 to the driver writer. Language is specified in
 147                                 RFC 4646 or ISO 639-2 language code format.
 148
 149   @param  ControllerName[out]   A pointer to the Unicode string to return.
 150                                 This Unicode string is the name of the
 151                                 controller specified by ControllerHandle and
 152                                 ChildHandle in the language specified by
 153                                 Language from the point of view of the driver
 154                                 specified by This.
 155
 156   @retval EFI_SUCCESS           The Unicode string for the user readable name in
 157                                 the language specified by Language for the
 158                                 driver specified by This was returned in
 159                                 DriverName.
 160
 161   @retval EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE.
 162
 163   @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
 164                                 EFI_HANDLE.
 165
 166   @retval EFI_INVALID_PARAMETER Language is NULL.
 167
 168   @retval EFI_INVALID_PARAMETER ControllerName is NULL.
 169
 170   @retval EFI_UNSUPPORTED       The driver specified by This is not currently
 171                                 managing the controller specified by
 172                                 ControllerHandle and ChildHandle.
 173
 174   @retval EFI_UNSUPPORTED       The driver specified by This does not support
 175                                 the language specified by Language.
 176
 177 **/
 178 EFI_STATUS
 179 EFIAPI
 180 EmuBusDriverComponentNameGetControllerName (
 181   IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,
 182   IN  EFI_HANDLE                                      ControllerHandle,
 183   IN  EFI_HANDLE                                      ChildHandle        OPTIONAL,
 184   IN  CHAR8                                           *Language,
 185   OUT CHAR16                                          **ControllerName
 186   )
 187 {
 188   EFI_STATUS              Status;
 189   EMU_IO_THUNK_PROTOCOL   *EmuIo;
 190   EMU_IO_DEVICE           *Private;
 191
 192   //
 193   // Make sure this driver is currently managing ControllHandle
 194   //
 195   Status = EfiTestManagedDevice (
 196              ControllerHandle,
 197              gEmuBusDriverBinding.DriverBindingHandle,
 198              &gEmuThunkProtocolGuid
 199              );
 200   if (EFI_ERROR (Status)) {
 201     return Status;
 202   }
 203
 204   //
 205   // This is a bus driver, so ChildHandle can not be NULL.
 206   //
 207   if (ChildHandle == NULL) {
 208     return EFI_UNSUPPORTED;
 209   }
 210
 211   Status = EfiTestChildHandle (
 212              ControllerHandle,
 213              ChildHandle,
 214              &gEmuThunkProtocolGuid
 215              );
 216   if (EFI_ERROR (Status)) {
 217     return Status;
 218   }
 219
 220   //
 221   // Get our context back
 222   //
 223   Status = gBS->OpenProtocol (
 224                   ChildHandle,
 225                   &gEmuIoThunkProtocolGuid,
 226                   (VOID**)&EmuIo,
 227                   gEmuBusDriverBinding.DriverBindingHandle,
 228                   ChildHandle,
 229                   EFI_OPEN_PROTOCOL_GET_PROTOCOL
 230                   );
 231   if (EFI_ERROR (Status)) {
 232     return EFI_UNSUPPORTED;
 233   }
 234
 235   Private = EMU_IO_DEVICE_FROM_THIS (EmuIo);
 236
 237   return LookupUnicodeString2 (
 238            Language,
 239            This->SupportedLanguages,
 240            Private->ControllerNameTable,
 241            ControllerName,
 242            (BOOLEAN)(This == &gEmuBusDriverComponentName)
 243           );
 244 }