OvmfPkg/QemuVideoDxe/ComponentName.c

   1 /** @file
   2   Component name for the QEMU video controller.
   3
   4   Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
   5
   6   This program and the accompanying materials
   7   are licensed and made available under the terms and conditions of the BSD License
   8   which accompanies this distribution. The full text of the license may be found at
   9   http://opensource.org/licenses/bsd-license.php
  10
  11   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13
  14 **/
  15
  16 #include "Qemu.h"
  17
  18 //
  19 // EFI Component Name Protocol
  20 //
  21 GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME_PROTOCOL  gQemuVideoComponentName = {
  22   QemuVideoComponentNameGetDriverName,
  23   QemuVideoComponentNameGetControllerName,
  24   "eng"
  25 };
  26
  27 //
  28 // EFI Component Name 2 Protocol
  29 //
  30 GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME2_PROTOCOL gQemuVideoComponentName2 = {
  31   (EFI_COMPONENT_NAME2_GET_DRIVER_NAME) QemuVideoComponentNameGetDriverName,
  32   (EFI_COMPONENT_NAME2_GET_CONTROLLER_NAME) QemuVideoComponentNameGetControllerName,
  33   "en"
  34 };
  35
  36
  37 GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE mQemuVideoDriverNameTable[] = {
  38   { "eng;en", L"QEMU Video Driver" },
  39   { NULL , NULL }
  40 };
  41
  42 GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE mQemuVideoControllerNameTable[] = {
  43   { "eng;en", L"QEMU Video PCI Adapter" },
  44   { NULL , NULL }
  45 };
  46
  47 /**
  48   Retrieves a Unicode string that is the user readable name of the driver.
  49
  50   This function retrieves the user readable name of a driver in the form of a
  51   Unicode string. If the driver specified by This has a user readable name in
  52   the language specified by Language, then a pointer to the driver name is
  53   returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
  54   by This does not support the language specified by Language,
  55   then EFI_UNSUPPORTED is returned.
  56
  57   @param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
  58                                 EFI_COMPONENT_NAME_PROTOCOL instance.
  59
  60   @param  Language[in]          A pointer to a Null-terminated ASCII string
  61                                 array indicating the language. This is the
  62                                 language of the driver name that the caller is
  63                                 requesting, and it must match one of the
  64                                 languages specified in SupportedLanguages. The
  65                                 number of languages supported by a driver is up
  66                                 to the driver writer. Language is specified
  67                                 in RFC 4646 or ISO 639-2 language code format.
  68
  69   @param  DriverName[out]       A pointer to the Unicode string to return.
  70                                 This Unicode string is the name of the
  71                                 driver specified by This in the language
  72                                 specified by Language.
  73
  74   @retval EFI_SUCCESS           The Unicode string for the Driver specified by
  75                                 This and the language specified by Language was
  76                                 returned in DriverName.
  77
  78   @retval EFI_INVALID_PARAMETER Language is NULL.
  79
  80   @retval EFI_INVALID_PARAMETER DriverName is NULL.
  81
  82   @retval EFI_UNSUPPORTED       The driver specified by This does not support
  83                                 the language specified by Language.
  84
  85 **/
  86 EFI_STATUS
  87 EFIAPI
  88 QemuVideoComponentNameGetDriverName (
  89   IN  EFI_COMPONENT_NAME_PROTOCOL  *This,
  90   IN  CHAR8                        *Language,
  91   OUT CHAR16                       **DriverName
  92   )
  93 {
  94   return LookupUnicodeString2 (
  95            Language,
  96            This->SupportedLanguages,
  97            mQemuVideoDriverNameTable,
  98            DriverName,
  99            (BOOLEAN)(This == &gQemuVideoComponentName)
 100            );
 101 }
 102
 103 /**
 104   Retrieves a Unicode string that is the user readable name of the controller
 105   that is being managed by a driver.
 106
 107   This function retrieves the user readable name of the controller specified by
 108   ControllerHandle and ChildHandle in the form of a Unicode string. If the
 109   driver specified by This has a user readable name in the language specified by
 110   Language, then a pointer to the controller name is returned in ControllerName,
 111   and EFI_SUCCESS is returned.  If the driver specified by This is not currently
 112   managing the controller specified by ControllerHandle and ChildHandle,
 113   then EFI_UNSUPPORTED is returned.  If the driver specified by This does not
 114   support the language specified by Language, then EFI_UNSUPPORTED is returned.
 115
 116   @param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
 117                                 EFI_COMPONENT_NAME_PROTOCOL instance.
 118
 119   @param  ControllerHandle[in]  The handle of a controller that the driver
 120                                 specified by This is managing.  This handle
 121                                 specifies the controller whose name is to be
 122                                 returned.
 123
 124   @param  ChildHandle[in]       The handle of the child controller to retrieve
 125                                 the name of.  This is an optional parameter that
 126                                 may be NULL.  It will be NULL for device
 127                                 drivers.  It will also be NULL for a bus drivers
 128                                 that wish to retrieve the name of the bus
 129                                 controller.  It will not be NULL for a bus
 130                                 driver that wishes to retrieve the name of a
 131                                 child controller.
 132
 133   @param  Language[in]          A pointer to a Null-terminated ASCII string
 134                                 array indicating the language.  This is the
 135                                 language of the driver name that the caller is
 136                                 requesting, and it must match one of the
 137                                 languages specified in SupportedLanguages. The
 138                                 number of languages supported by a driver is up
 139                                 to the driver writer. Language is specified in
 140                                 RFC 4646 or ISO 639-2 language code format.
 141
 142   @param  ControllerName[out]   A pointer to the Unicode string to return.
 143                                 This Unicode string is the name of the
 144                                 controller specified by ControllerHandle and
 145                                 ChildHandle in the language specified by
 146                                 Language from the point of view of the driver
 147                                 specified by This.
 148
 149   @retval EFI_SUCCESS           The Unicode string for the user readable name in
 150                                 the language specified by Language for the
 151                                 driver specified by This was returned in
 152                                 DriverName.
 153
 154   @retval EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE.
 155
 156   @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
 157                                 EFI_HANDLE.
 158
 159   @retval EFI_INVALID_PARAMETER Language is NULL.
 160
 161   @retval EFI_INVALID_PARAMETER ControllerName is NULL.
 162
 163   @retval EFI_UNSUPPORTED       The driver specified by This is not currently
 164                                 managing the controller specified by
 165                                 ControllerHandle and ChildHandle.
 166
 167   @retval EFI_UNSUPPORTED       The driver specified by This does not support
 168                                 the language specified by Language.
 169
 170 **/
 171 EFI_STATUS
 172 EFIAPI
 173 QemuVideoComponentNameGetControllerName (
 174   IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,
 175   IN  EFI_HANDLE                                      ControllerHandle,
 176   IN  EFI_HANDLE                                      ChildHandle        OPTIONAL,
 177   IN  CHAR8                                           *Language,
 178   OUT CHAR16                                          **ControllerName
 179   )
 180 {
 181   EFI_STATUS                      Status;
 182
 183   //
 184   // This is a device driver, so ChildHandle must be NULL.
 185   //
 186   if (ChildHandle != NULL) {
 187     return EFI_UNSUPPORTED;
 188   }
 189
 190   //
 191   // Make sure this driver is currently managing ControllHandle
 192   //
 193   Status = EfiTestManagedDevice (
 194              ControllerHandle,
 195              gQemuVideoDriverBinding.DriverBindingHandle,
 196              &gEfiPciIoProtocolGuid
 197              );
 198   if (EFI_ERROR (Status)) {
 199     return Status;
 200   }
 201
 202   //
 203   // Get the QEMU Video's Device structure
 204   //
 205   return LookupUnicodeString2 (
 206            Language,
 207            This->SupportedLanguages,
 208            mQemuVideoControllerNameTable,
 209            ControllerName,
 210            (BOOLEAN)(This == &gQemuVideoComponentName)
 211            );
 212 }