MdeModulePkg/Bus/Scsi/ScsiDiskDxe/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 //
  21 // The package level header files this module uses
  22 //
  23 #include <PiDxe.h>
  24
  25 //
  26 // The protocols, PPI and GUID defintions for this module
  27 //
  28 #include <Protocol/ScsiIo.h>
  29 #include <Protocol/ComponentName.h>
  30 #include <Protocol/BlockIo.h>
  31 #include <Protocol/DriverBinding.h>
  32 //
  33 // The Library classes this module consumes
  34 //
  35 #include <Library/DebugLib.h>
  36 #include <Library/UefiDriverEntryPoint.h>
  37 #include <Library/UefiLib.h>
  38 #include <Library/BaseMemoryLib.h>
  39 #include <Library/ScsiLib.h>
  40 #include <Library/UefiBootServicesTableLib.h>
  41
  42 #include "ScsiDisk.h"
  43
  44 //
  45 // EFI Component Name Protocol
  46 //
  47 EFI_COMPONENT_NAME_PROTOCOL     gScsiDiskComponentName = {
  48   ScsiDiskComponentNameGetDriverName,
  49   ScsiDiskComponentNameGetControllerName,
  50   "eng"
  51 };
  52
  53 static EFI_UNICODE_STRING_TABLE mScsiDiskDriverNameTable[] = {
  54   { "eng", (CHAR16 *) L"Scsi Disk Driver" },
  55   { NULL , NULL }
  56 };
  57
  58 EFI_STATUS
  59 EFIAPI
  60 ScsiDiskComponentNameGetDriverName (
  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           gScsiDiskComponentName.SupportedLanguages,
  95           mScsiDiskDriverNameTable,
  96           DriverName
  97           );
  98 }
  99
 100 EFI_STATUS
 101 EFIAPI
 102 ScsiDiskComponentNameGetControllerName (
 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   SCSI_DISK_DEV         *ScsiDiskDevice;
 157   EFI_BLOCK_IO_PROTOCOL *BlockIo;
 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   //
 167   // Make sure this driver is currently managing ControllerHandle
 168   //
 169   Status = EfiTestManagedDevice (
 170              ControllerHandle,
 171              gScsiDiskDriverBinding.DriverBindingHandle,
 172              &gEfiScsiIoProtocolGuid
 173              );
 174   if (EFI_ERROR (Status)) {
 175     return Status;
 176   }
 177   //
 178   // Get the device context
 179   //
 180   Status = gBS->OpenProtocol (
 181                   ControllerHandle,
 182                   &gEfiBlockIoProtocolGuid,
 183                   (VOID **) &BlockIo,
 184                   gScsiDiskDriverBinding.DriverBindingHandle,
 185                   ControllerHandle,
 186                   EFI_OPEN_PROTOCOL_GET_PROTOCOL
 187                   );
 188
 189   if (EFI_ERROR (Status)) {
 190     return Status;
 191   }
 192
 193   ScsiDiskDevice = SCSI_DISK_DEV_FROM_THIS (BlockIo);
 194
 195   return LookupUnicodeString (
 196           Language,
 197           gScsiDiskComponentName.SupportedLanguages,
 198           ScsiDiskDevice->ControllerNameTable,
 199           ControllerName
 200           );
 201
 202 }