MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ComponentName.c

   1 /** @file
   2   UEFI Component Name(2) protocol implementation for SCSI disk driver.
   3
   4 Copyright (c) 2004 - 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
  16 #include "ScsiDisk.h"
  17
  18 //
  19 // EFI Component Name Protocol
  20 //
  21 GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME_PROTOCOL  gScsiDiskComponentName = {
  22   ScsiDiskComponentNameGetDriverName,
  23   ScsiDiskComponentNameGetControllerName,
  24   "eng"
  25 };
  26
  27 //
  28 // EFI Component Name 2 Protocol
  29 //
  30 GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME2_PROTOCOL gScsiDiskComponentName2 = {
  31   (EFI_COMPONENT_NAME2_GET_DRIVER_NAME) ScsiDiskComponentNameGetDriverName,
  32   (EFI_COMPONENT_NAME2_GET_CONTROLLER_NAME) ScsiDiskComponentNameGetControllerName,
  33   "en"
  34 };
  35
  36
  37 GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE mScsiDiskDriverNameTable[] = {
  38   { "eng;en", (CHAR16 *) L"Scsi Disk Driver" },
  39   { NULL , NULL }
  40 };
  41
  42 /**
  43   Retrieves a Unicode string that is the user readable name of the driver.
  44
  45   This function retrieves the user readable name of a driver in the form of a
  46   Unicode string. If the driver specified by This has a user readable name in
  47   the language specified by Language, then a pointer to the driver name is
  48   returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
  49   by This does not support the language specified by Language,
  50   then EFI_UNSUPPORTED is returned.
  51
  52   @param  This                  A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
  53                                 EFI_COMPONENT_NAME_PROTOCOL instance.
  54
  55   @param  Language              A pointer to a Null-terminated ASCII string
  56                                 array indicating the language. This is the
  57                                 language of the driver name that the caller is
  58                                 requesting, and it must match one of the
  59                                 languages specified in SupportedLanguages. The
  60                                 number of languages supported by a driver is up
  61                                 to the driver writer. Language is specified
  62                                 in RFC 4646 or ISO 639-2 language code format.
  63
  64   @param  DriverName            A pointer to the Unicode string to return.
  65                                 This Unicode string is the name of the
  66                                 driver specified by This in the language
  67                                 specified by Language.
  68
  69   @retval EFI_SUCCESS           The Unicode string for the Driver specified by
  70                                 This and the language specified by Language was
  71                                 returned in DriverName.
  72
  73   @retval EFI_INVALID_PARAMETER Language is NULL.
  74
  75   @retval EFI_INVALID_PARAMETER DriverName is NULL.
  76
  77   @retval EFI_UNSUPPORTED       The driver specified by This does not support
  78                                 the language specified by Language.
  79
  80 **/
  81 EFI_STATUS
  82 EFIAPI
  83 ScsiDiskComponentNameGetDriverName (
  84   IN  EFI_COMPONENT_NAME_PROTOCOL  *This,
  85   IN  CHAR8                        *Language,
  86   OUT CHAR16                       **DriverName
  87   )
  88 {
  89   return LookupUnicodeString2 (
  90            Language,
  91            This->SupportedLanguages,
  92            mScsiDiskDriverNameTable,
  93            DriverName,
  94            (BOOLEAN)(This == &gScsiDiskComponentName)
  95            );
  96 }
  97
  98 /**
  99   Retrieves a Unicode string that is the user readable name of the controller
 100   that is being managed by a driver.
 101
 102   This function retrieves the user readable name of the controller specified by
 103   ControllerHandle and ChildHandle in the form of a Unicode string. If the
 104   driver specified by This has a user readable name in the language specified by
 105   Language, then a pointer to the controller name is returned in ControllerName,
 106   and EFI_SUCCESS is returned.  If the driver specified by This is not currently
 107   managing the controller specified by ControllerHandle and ChildHandle,
 108   then EFI_UNSUPPORTED is returned.  If the driver specified by This does not
 109   support the language specified by Language, then EFI_UNSUPPORTED is returned.
 110
 111   @param  This                  A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
 112                                 EFI_COMPONENT_NAME_PROTOCOL instance.
 113
 114   @param  ControllerHandle      The handle of a controller that the driver
 115                                 specified by This is managing.  This handle
 116                                 specifies the controller whose name is to be
 117                                 returned.
 118
 119   @param  ChildHandle           The handle of the child controller to retrieve
 120                                 the name of.  This is an optional parameter that
 121                                 may be NULL.  It will be NULL for device
 122                                 drivers.  It will also be NULL for a bus drivers
 123                                 that wish to retrieve the name of the bus
 124                                 controller.  It will not be NULL for a bus
 125                                 driver that wishes to retrieve the name of a
 126                                 child controller.
 127
 128   @param  Language              A pointer to a Null-terminated ASCII string
 129                                 array indicating the language.  This is the
 130                                 language of the driver name that the caller is
 131                                 requesting, and it must match one of the
 132                                 languages specified in SupportedLanguages. The
 133                                 number of languages supported by a driver is up
 134                                 to the driver writer. Language is specified in
 135                                 RFC 4646 or ISO 639-2 language code format.
 136
 137   @param  ControllerName        A pointer to the Unicode string to return.
 138                                 This Unicode string is the name of the
 139                                 controller specified by ControllerHandle and
 140                                 ChildHandle in the language specified by
 141                                 Language from the point of view of the driver
 142                                 specified by This.
 143
 144   @retval EFI_SUCCESS           The Unicode string for the user readable name in
 145                                 the language specified by Language for the
 146                                 driver specified by This was returned in
 147                                 DriverName.
 148
 149   @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
 150
 151   @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
 152                                 EFI_HANDLE.
 153
 154   @retval EFI_INVALID_PARAMETER Language is NULL.
 155
 156   @retval EFI_INVALID_PARAMETER ControllerName is NULL.
 157
 158   @retval EFI_UNSUPPORTED       The driver specified by This is not currently
 159                                 managing the controller specified by
 160                                 ControllerHandle and ChildHandle.
 161
 162   @retval EFI_UNSUPPORTED       The driver specified by This does not support
 163                                 the language specified by Language.
 164
 165 **/
 166 EFI_STATUS
 167 EFIAPI
 168 ScsiDiskComponentNameGetControllerName (
 169   IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,
 170   IN  EFI_HANDLE                                      ControllerHandle,
 171   IN  EFI_HANDLE                                      ChildHandle        OPTIONAL,
 172   IN  CHAR8                                           *Language,
 173   OUT CHAR16                                          **ControllerName
 174   )
 175 {
 176   EFI_STATUS            Status;
 177   SCSI_DISK_DEV         *ScsiDiskDevice;
 178   EFI_BLOCK_IO_PROTOCOL *BlockIo;
 179
 180   //
 181   // This is a device driver, so ChildHandle must be NULL.
 182   //
 183   if (ChildHandle != NULL) {
 184     return EFI_UNSUPPORTED;
 185   }
 186
 187   //
 188   // Make sure this driver is currently managing ControllerHandle
 189   //
 190   Status = EfiTestManagedDevice (
 191              ControllerHandle,
 192              gScsiDiskDriverBinding.DriverBindingHandle,
 193              &gEfiScsiIoProtocolGuid
 194              );
 195   if (EFI_ERROR (Status)) {
 196     return Status;
 197   }
 198   //
 199   // Get the device context
 200   //
 201   Status = gBS->OpenProtocol (
 202                   ControllerHandle,
 203                   &gEfiBlockIoProtocolGuid,
 204                   (VOID **) &BlockIo,
 205                   gScsiDiskDriverBinding.DriverBindingHandle,
 206                   ControllerHandle,
 207                   EFI_OPEN_PROTOCOL_GET_PROTOCOL
 208                   );
 209
 210   if (EFI_ERROR (Status)) {
 211     return Status;
 212   }
 213
 214   ScsiDiskDevice = SCSI_DISK_DEV_FROM_BLKIO (BlockIo);
 215
 216   return LookupUnicodeString2 (
 217            Language,
 218            This->SupportedLanguages,
 219            ScsiDiskDevice->ControllerNameTable,
 220            ControllerName,
 221            (BOOLEAN)(This == &gScsiDiskComponentName)
 222            );
 223
 224 }