MdeModulePkg/Bus/Pci/EhciDxe/ComponentName.c

   1 /** @file
   2
   3 Copyright 2006 - 2007, 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
  21 #include "Ehci.h"
  22
  23 //
  24 // EFI Component Name Functions
  25 //
  26 EFI_STATUS
  27 EFIAPI
  28 EhciComponentNameGetDriverName (
  29   IN  EFI_COMPONENT_NAME_PROTOCOL     *This,
  30   IN  CHAR8                           *Language,
  31   OUT CHAR16                          **DriverName
  32   );
  33
  34 EFI_STATUS
  35 EFIAPI
  36 EhciComponentNameGetControllerName (
  37   IN  EFI_COMPONENT_NAME_PROTOCOL     *This,
  38   IN  EFI_HANDLE                      ControllerHandle,
  39   IN  EFI_HANDLE                      ChildHandle, OPTIONAL
  40   IN  CHAR8                           *Language,
  41   OUT CHAR16                          **ControllerName
  42   );
  43
  44 //
  45 // EFI Component Name Protocol
  46 //
  47 EFI_COMPONENT_NAME_PROTOCOL     gEhciComponentName = {
  48   EhciComponentNameGetDriverName,
  49   EhciComponentNameGetControllerName,
  50   "eng"
  51 };
  52
  53 static EFI_UNICODE_STRING_TABLE mEhciDriverNameTable[] = {
  54   { "eng", L"Usb Ehci Driver" },
  55   { NULL , NULL }
  56 };
  57
  58 EFI_STATUS
  59 EFIAPI
  60 EhciComponentNameGetDriverName (
  61   IN  EFI_COMPONENT_NAME_PROTOCOL     *This,
  62   IN  CHAR8                           *Language,
  63   OUT CHAR16                          **DriverName
  64   )
  65 /*++
  66
  67   Routine Description:
  68     Retrieves a Unicode string that is the user readable name of the EFI Driver.
  69
  70   Arguments:
  71     This       - A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
  72     Language   - A pointer to a three character ISO 639-2 language identifier.
  73                  This is the language of the driver name that that the caller
  74                  is requesting, and it must match one of the languages specified
  75                  in SupportedLanguages.  The number of languages supported by a
  76                  driver is up to the driver writer.
  77     DriverName - A pointer to the Unicode string to return.  This Unicode string
  78                  is the name of the driver specified by This in the language
  79                  specified by Language.
  80
  81   Returns:
  82     EFI_SUCCESS           - The Unicode string for the Driver specified by This
  83                             and the language specified by Language was returned
  84                             in DriverName.
  85     EFI_INVALID_PARAMETER - Language is NULL.
  86     EFI_INVALID_PARAMETER - DriverName is NULL.
  87     EFI_UNSUPPORTED       - The driver specified by This does not support the
  88                             language specified by Language.
  89
  90 --*/
  91 {
  92   return LookupUnicodeString (
  93           Language,
  94           gEhciComponentName.SupportedLanguages,
  95           mEhciDriverNameTable,
  96           DriverName
  97           );
  98 }
  99
 100 EFI_STATUS
 101 EFIAPI
 102 EhciComponentNameGetControllerName (
 103   IN  EFI_COMPONENT_NAME_PROTOCOL     *This,
 104   IN  EFI_HANDLE                      ControllerHandle,
 105   IN  EFI_HANDLE                      ChildHandle, OPTIONAL
 106   IN  CHAR8                           *Language,
 107   OUT CHAR16                          **ControllerName
 108   )
 109 /*++
 110
 111   Routine Description:
 112     Retrieves a Unicode string that is the user readable name of the controller
 113     that is being managed by an EFI Driver.
 114
 115   Arguments:
 116     This             - A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
 117     ControllerHandle - The handle of a controller that the driver specified by
 118                        This is managing.  This handle specifies the controller
 119                        whose name is to be returned.
 120     ChildHandle      - The handle of the child controller to retrieve the name
 121                        of.  This is an optional parameter that may be NULL.  It
 122                        will be NULL for device drivers.  It will also be NULL
 123                        for a bus drivers that wish to retrieve the name of the
 124                        bus controller.  It will not be NULL for a bus driver
 125                        that wishes to retrieve the name of a child controller.
 126     Language         - A pointer to a three character ISO 639-2 language
 127                        identifier.  This is the language of the controller name
 128                        that that the caller is requesting, and it must match one
 129                        of the languages specified in SupportedLanguages.  The
 130                        number of languages supported by a driver is up to the
 131                        driver writer.
 132     ControllerName   - A pointer to the Unicode string to return.  This Unicode
 133                        string is the name of the controller specified by
 134                        ControllerHandle and ChildHandle in the language
 135                        specified by Language from the point of view of the
 136                        driver specified by This.
 137
 138   Returns:
 139     EFI_SUCCESS           - The Unicode string for the user readable name in the
 140                             language specified by Language for the driver
 141                             specified by This was returned in DriverName.
 142     EFI_INVALID_PARAMETER - ControllerHandle is not a valid EFI_HANDLE.
 143     EFI_INVALID_PARAMETER - ChildHandle is not NULL and it is not a valid
 144                             EFI_HANDLE.
 145     EFI_INVALID_PARAMETER - Language is NULL.
 146     EFI_INVALID_PARAMETER - ControllerName is NULL.
 147     EFI_UNSUPPORTED       - The driver specified by This is not currently
 148                             managing the controller specified by
 149                             ControllerHandle and ChildHandle.
 150     EFI_UNSUPPORTED       - The driver specified by This does not support the
 151                             language specified by Language.
 152
 153 --*/
 154 {
 155   EFI_STATUS           Status;
 156   USB2_HC_DEV          *EhciDev;
 157   EFI_USB2_HC_PROTOCOL *Usb2Hc;
 158
 159   //
 160   // This is a device driver, so ChildHandle must be NULL.
 161   //
 162   if (ChildHandle != NULL) {
 163     return EFI_UNSUPPORTED;
 164   }
 165   //
 166   // Make sure this driver is currently managing ControllerHandle
 167   //
 168   Status = EfiTestManagedDevice (
 169              ControllerHandle,
 170              gEhciDriverBinding.DriverBindingHandle,
 171              &gEfiPciIoProtocolGuid
 172              );
 173   if (EFI_ERROR (Status)) {
 174     return Status;
 175   }
 176   //
 177   // Get the device context
 178   //
 179   Status = gBS->OpenProtocol (
 180                   ControllerHandle,
 181                   &gEfiUsb2HcProtocolGuid,
 182                   (VOID **) &Usb2Hc,
 183                   gEhciDriverBinding.DriverBindingHandle,
 184                   ControllerHandle,
 185                   EFI_OPEN_PROTOCOL_GET_PROTOCOL
 186                   );
 187   if (EFI_ERROR (Status)) {
 188     return Status;
 189   }
 190
 191   EhciDev = EHC_FROM_THIS (Usb2Hc);
 192
 193   return LookupUnicodeString (
 194           Language,
 195           gEhciComponentName.SupportedLanguages,
 196           EhciDev->ControllerNameTable,
 197           ControllerName
 198           );
 199
 200 }