EdkModulePkg/Bus/Pci/CirrusLogic/Dxe/ComponentName.c

   1 /*++
   2
   3 Copyright (c) 2006, Intel Corporation
   4 All rights reserved. This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 Module Name:
  13
  14   ComponentName.c
  15
  16 Abstract:
  17
  18 --*/
  19
  20 #include "CirrusLogic5430.h"
  21
  22 //
  23 // EFI Component Name Functions
  24 //
  25 EFI_STATUS
  26 EFIAPI
  27 CirrusLogic5430ComponentNameGetDriverName (
  28   IN  EFI_COMPONENT_NAME_PROTOCOL  *This,
  29   IN  CHAR8                        *Language,
  30   OUT CHAR16                       **DriverName
  31   );
  32
  33 EFI_STATUS
  34 EFIAPI
  35 CirrusLogic5430ComponentNameGetControllerName (
  36   IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,
  37   IN  EFI_HANDLE                                      ControllerHandle,
  38   IN  EFI_HANDLE                                      ChildHandle        OPTIONAL,
  39   IN  CHAR8                                           *Language,
  40   OUT CHAR16                                          **ControllerName
  41   );
  42
  43 //
  44 // EFI Component Name Protocol
  45 //
  46 EFI_COMPONENT_NAME_PROTOCOL     gCirrusLogic5430ComponentName = {
  47   CirrusLogic5430ComponentNameGetDriverName,
  48   CirrusLogic5430ComponentNameGetControllerName,
  49   "eng"
  50 };
  51
  52 static EFI_UNICODE_STRING_TABLE mCirrusLogic5430DriverNameTable[] = {
  53   { "eng", (CHAR16 *) L"Cirrus Logic 5430 UGA Driver" },
  54   { NULL , NULL }
  55 };
  56
  57 static EFI_UNICODE_STRING_TABLE mCirrusLogic5430ControllerNameTable[] = {
  58   { "eng", (CHAR16 *) L"Cirrus Logic 5430 PCI Adapter" },
  59   { NULL , NULL }
  60 };
  61
  62 EFI_STATUS
  63 EFIAPI
  64 CirrusLogic5430ComponentNameGetDriverName (
  65   IN  EFI_COMPONENT_NAME_PROTOCOL  *This,
  66   IN  CHAR8                        *Language,
  67   OUT CHAR16                       **DriverName
  68   )
  69 /*++
  70
  71   Routine Description:
  72     Retrieves a Unicode string that is the user readable name of the EFI Driver.
  73
  74   Arguments:
  75     This       - A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
  76     Language   - A pointer to a three character ISO 639-2 language identifier.
  77                  This is the language of the driver name that that the caller
  78                  is requesting, and it must match one of the languages specified
  79                  in SupportedLanguages.  The number of languages supported by a
  80                  driver is up to the driver writer.
  81     DriverName - A pointer to the Unicode string to return.  This Unicode string
  82                  is the name of the driver specified by This in the language
  83                  specified by Language.
  84
  85   Returns:
  86     EFI_SUCCESS           - The Unicode string for the Driver specified by This
  87                             and the language specified by Language was returned
  88                             in DriverName.
  89     EFI_INVALID_PARAMETER - Language is NULL.
  90     EFI_INVALID_PARAMETER - DriverName is NULL.
  91     EFI_UNSUPPORTED       - The driver specified by This does not support the
  92                             language specified by Language.
  93
  94 --*/
  95 {
  96   return LookupUnicodeString (
  97           Language,
  98           gCirrusLogic5430ComponentName.SupportedLanguages,
  99           mCirrusLogic5430DriverNameTable,
 100           DriverName
 101           );
 102 }
 103
 104 EFI_STATUS
 105 EFIAPI
 106 CirrusLogic5430ComponentNameGetControllerName (
 107   IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,
 108   IN  EFI_HANDLE                                      ControllerHandle,
 109   IN  EFI_HANDLE                                      ChildHandle        OPTIONAL,
 110   IN  CHAR8                                           *Language,
 111   OUT CHAR16                                          **ControllerName
 112   )
 113 /*++
 114
 115   Routine Description:
 116     Retrieves a Unicode string that is the user readable name of the controller
 117     that is being managed by an EFI Driver.
 118
 119   Arguments:
 120     This             - A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
 121     ControllerHandle - The handle of a controller that the driver specified by
 122                        This is managing.  This handle specifies the controller
 123                        whose name is to be returned.
 124     ChildHandle      - The handle of the child controller to retrieve the name
 125                        of.  This is an optional parameter that may be NULL.  It
 126                        will be NULL for device drivers.  It will also be NULL
 127                        for a bus drivers that wish to retrieve the name of the
 128                        bus controller.  It will not be NULL for a bus driver
 129                        that wishes to retrieve the name of a child controller.
 130     Language         - A pointer to a three character ISO 639-2 language
 131                        identifier.  This is the language of the controller name
 132                        that that the caller is requesting, and it must match one
 133                        of the languages specified in SupportedLanguages.  The
 134                        number of languages supported by a driver is up to the
 135                        driver writer.
 136     ControllerName   - A pointer to the Unicode string to return.  This Unicode
 137                        string is the name of the controller specified by
 138                        ControllerHandle and ChildHandle in the language specified
 139                        by Language from the point of view of the driver specified
 140                        by This.
 141
 142   Returns:
 143     EFI_SUCCESS           - The Unicode string for the user readable name in the
 144                             language specified by Language for the driver
 145                             specified by This was returned in DriverName.
 146     EFI_INVALID_PARAMETER - ControllerHandle is not a valid EFI_HANDLE.
 147     EFI_INVALID_PARAMETER - ChildHandle is not NULL and it is not a valid EFI_HANDLE.
 148     EFI_INVALID_PARAMETER - Language is NULL.
 149     EFI_INVALID_PARAMETER - ControllerName is NULL.
 150     EFI_UNSUPPORTED       - The driver specified by This is not currently managing
 151                             the controller specified by ControllerHandle and
 152                             ChildHandle.
 153     EFI_UNSUPPORTED       - The driver specified by This does not support the
 154                             language specified by Language.
 155
 156 --*/
 157 {
 158   EFI_UGA_DRAW_PROTOCOL           *UgaDraw;
 159   EFI_STATUS                      Status;
 160   CIRRUS_LOGIC_5430_PRIVATE_DATA  *Private;
 161   EFI_PCI_IO_PROTOCOL             *PciIoProtocol;
 162
 163   //
 164   // This is a device driver, so ChildHandle must be NULL.
 165   //
 166   if (ChildHandle != NULL) {
 167     return EFI_UNSUPPORTED;
 168   }
 169
 170   //
 171   // Check Controller's handle
 172   //
 173   Status = gBS->OpenProtocol (
 174                   ControllerHandle,
 175                   &gEfiPciIoProtocolGuid,
 176                   (VOID **) &PciIoProtocol,
 177                   gCirrusLogic5430DriverBinding.DriverBindingHandle,
 178                   ControllerHandle,
 179                   EFI_OPEN_PROTOCOL_BY_DRIVER
 180                   );
 181   if (!EFI_ERROR (Status)) {
 182     gBS->CloseProtocol (
 183           ControllerHandle,
 184           &gEfiPciIoProtocolGuid,
 185           gCirrusLogic5430DriverBinding.DriverBindingHandle,
 186           ControllerHandle
 187           );
 188
 189     return EFI_UNSUPPORTED;
 190   }
 191
 192   if (Status != EFI_ALREADY_STARTED) {
 193     return EFI_UNSUPPORTED;
 194   }
 195
 196   //
 197   // Get the UGA Draw Protocol on Controller
 198   //
 199   Status = gBS->OpenProtocol (
 200                   ControllerHandle,
 201                   &gEfiUgaDrawProtocolGuid,
 202                   (VOID **) &UgaDraw,
 203                   gCirrusLogic5430DriverBinding.DriverBindingHandle,
 204                   ControllerHandle,
 205                   EFI_OPEN_PROTOCOL_GET_PROTOCOL
 206                   );
 207   if (EFI_ERROR (Status)) {
 208     return Status;
 209   }
 210
 211   //
 212   // Get the Cirrus Logic 5430's Device structure
 213   //
 214   Private = CIRRUS_LOGIC_5430_PRIVATE_DATA_FROM_UGA_DRAW_THIS (UgaDraw);
 215
 216   return LookupUnicodeString (
 217           Language,
 218           gCirrusLogic5430ComponentName.SupportedLanguages,
 219           mCirrusLogic5430ControllerNameTable,
 220           ControllerName
 221           );
 222 }