DuetPkg/SataControllerDxe/SataController.h

   1 /** @file
   2   Header file for Sata Controller driver.
   3
   4   Copyright (c) 2011, 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 #ifndef _SATA_CONTROLLER_H_
  16 #define _SATA_CONTROLLER_H_
  17
  18 #include <Uefi.h>
  19 #include <Protocol/ComponentName.h>
  20 #include <Protocol/DriverBinding.h>
  21 #include <Protocol/PciIo.h>
  22 #include <Protocol/IdeControllerInit.h>
  23 #include <Library/UefiDriverEntryPoint.h>
  24 #include <Library/DebugLib.h>
  25 #include <Library/UefiLib.h>
  26 #include <Library/BaseLib.h>
  27 #include <Library/BaseMemoryLib.h>
  28 #include <Library/MemoryAllocationLib.h>
  29 #include <Library/UefiBootServicesTableLib.h>
  30 #include <IndustryStandard/Pci.h>
  31
  32 //
  33 // Global Variables definitions
  34 //
  35 extern EFI_DRIVER_BINDING_PROTOCOL  gSataControllerDriverBinding;
  36 extern EFI_COMPONENT_NAME_PROTOCOL  gSataControllerComponentName;
  37 extern EFI_COMPONENT_NAME2_PROTOCOL gSataControllerComponentName2;
  38
  39 #define AHCI_BAR_INDEX 0x05
  40 #define R_AHCI_CAP 0x0
  41 #define   B_AHCI_CAP_NPS (BIT4 | BIT3 | BIT2 | BIT1 | BIT0) // Number of Ports
  42 #define   B_AHCI_CAP_SPM BIT17 // Supports Port Multiplier
  43
  44 ///
  45 /// AHCI each channel can have up to 1 device
  46 ///
  47 #define AHCI_MAX_DEVICES 0x01
  48
  49 ///
  50 /// AHCI each channel can have 15 devices in the presence of a multiplier
  51 ///
  52 #define AHCI_MULTI_MAX_DEVICES 0x0F
  53
  54 ///
  55 /// IDE supports 2 channel max
  56 ///
  57 #define IDE_MAX_CHANNEL 0x02
  58
  59 ///
  60 /// IDE supports 2 devices max
  61 ///
  62 #define IDE_MAX_DEVICES 0x02
  63
  64 #define SATA_ENUMER_ALL FALSE
  65
  66 //
  67 // Sata Controller driver private data structure
  68 //
  69
  70 #define SATA_CONTROLLER_SIGNATURE SIGNATURE_32('S','A','T','A')
  71
  72 typedef struct _EFI_SATA_CONTROLLER_PRIVATE_DATA {
  73   //
  74   // Standard signature used to identify Sata Controller private data
  75   //
  76   UINT32                            Signature;
  77
  78   //
  79   // Protocol instance of IDE_CONTROLLER_INIT produced by this driver
  80   //
  81   EFI_IDE_CONTROLLER_INIT_PROTOCOL  IdeInit;
  82
  83   //
  84   // Copy of protocol pointers used by this driver
  85   //
  86   EFI_PCI_IO_PROTOCOL               *PciIo;
  87
  88   //
  89   // The number of devices that are supported by this channel
  90   //
  91   UINT8                             DeviceCount;
  92
  93   //
  94   // The highest disqulified mode for each attached device,
  95   // From ATA/ATAPI spec, if a mode is not supported,
  96   // the modes higher than it is also not supported
  97   //
  98   EFI_ATA_COLLECTIVE_MODE           *DisqulifiedModes;
  99
 100   //
 101   // A copy of EFI_IDENTIFY_DATA data for each attached SATA device and its flag
 102   //
 103   EFI_IDENTIFY_DATA                 *IdentifyData;
 104   BOOLEAN                           *IdentifyValid;
 105 } EFI_SATA_CONTROLLER_PRIVATE_DATA;
 106
 107 #define SATA_CONTROLLER_PRIVATE_DATA_FROM_THIS(a) CR(a, EFI_SATA_CONTROLLER_PRIVATE_DATA, IdeInit, SATA_CONTROLLER_SIGNATURE)
 108
 109 //
 110 // Driver binding functions declaration
 111 //
 112 /**
 113   Supported function of Driver Binding protocol for this driver.
 114   Test to see if this driver supports ControllerHandle.
 115
 116   @param This                   Protocol instance pointer.
 117   @param Controller             Handle of device to test.
 118   @param RemainingDevicePath    A pointer to the device path. Should be ignored by
 119                                 device driver.
 120
 121   @retval EFI_SUCCESS           This driver supports this device.
 122   @retval EFI_ALREADY_STARTED   This driver is already running on this device.
 123   @retval other                 This driver does not support this device.
 124
 125 **/
 126 EFI_STATUS
 127 EFIAPI
 128 SataControllerSupported (
 129   IN EFI_DRIVER_BINDING_PROTOCOL    *This,
 130   IN EFI_HANDLE                     Controller,
 131   IN EFI_DEVICE_PATH_PROTOCOL       *RemainingDevicePath
 132   )
 133 ;
 134
 135 /**
 136   This routine is called right after the .Supported() called and
 137   Start this driver on ControllerHandle.
 138
 139   @param This                   Protocol instance pointer.
 140   @param Controller             Handle of device to bind driver to.
 141   @param RemainingDevicePath    A pointer to the device path. Should be ignored by
 142                                 device driver.
 143
 144   @retval EFI_SUCCESS           This driver is added to this device.
 145   @retval EFI_ALREADY_STARTED   This driver is already running on this device.
 146   @retval other                 Some error occurs when binding this driver to this device.
 147
 148 **/
 149 EFI_STATUS
 150 EFIAPI
 151 SataControllerStart (
 152   IN EFI_DRIVER_BINDING_PROTOCOL    *This,
 153   IN EFI_HANDLE                     Controller,
 154   IN EFI_DEVICE_PATH_PROTOCOL       *RemainingDevicePath
 155   )
 156 ;
 157
 158 /**
 159   Stop this driver on ControllerHandle.
 160
 161   @param This               Protocol instance pointer.
 162   @param Controller         Handle of device to stop driver on.
 163   @param NumberOfChildren   Not used.
 164   @param ChildHandleBuffer  Not used.
 165
 166   @retval EFI_SUCCESS   This driver is removed from this device.
 167   @retval other         Some error occurs when removing this driver from this device.
 168
 169 **/
 170 EFI_STATUS
 171 EFIAPI
 172 SataControllerStop (
 173   IN EFI_DRIVER_BINDING_PROTOCOL    *This,
 174   IN EFI_HANDLE                     Controller,
 175   IN UINTN                          NumberOfChildren,
 176   IN EFI_HANDLE                     *ChildHandleBuffer
 177   )
 178 ;
 179
 180 //
 181 // IDE controller init functions declaration
 182 //
 183 /**
 184   Returns the information about the specified IDE channel.
 185
 186   This function can be used to obtain information about a particular IDE channel.
 187   The driver entity uses this information during the enumeration process.
 188
 189   If Enabled is set to FALSE, the driver entity will not scan the channel. Note
 190   that it will not prevent an operating system driver from scanning the channel.
 191
 192   For most of today's controllers, MaxDevices will either be 1 or 2. For SATA
 193   controllers, this value will always be 1. SATA configurations can contain SATA
 194   port multipliers. SATA port multipliers behave like SATA bridges and can support
 195   up to 16 devices on the other side. If a SATA port out of the IDE controller
 196   is connected to a port multiplier, MaxDevices will be set to the number of SATA
 197   devices that the port multiplier supports. Because today's port multipliers
 198   support up to fifteen SATA devices, this number can be as large as fifteen. The IDE
 199   bus driver is required to scan for the presence of port multipliers behind an SATA
 200   controller and enumerate up to MaxDevices number of devices behind the port
 201   multiplier.
 202
 203   In this context, the devices behind a port multiplier constitute a channel.
 204
 205   @param[in]  This         The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
 206   @param[in]  Channel      Zero-based channel number.
 207   @param[out] Enabled      TRUE if this channel is enabled.  Disabled channels
 208                            are not scanned to see if any devices are present.
 209   @param[out] MaxDevices   The maximum number of IDE devices that the bus driver
 210                            can expect on this channel.  For the ATA/ATAPI
 211                            specification, version 6, this number will either be
 212                            one or two. For Serial ATA (SATA) configurations with a
 213                            port multiplier, this number can be as large as fifteen.
 214
 215   @retval EFI_SUCCESS             Information was returned without any errors.
 216   @retval EFI_INVALID_PARAMETER   Channel is invalid (Channel >= ChannelCount).
 217
 218 **/
 219 EFI_STATUS
 220 EFIAPI
 221 IdeInitGetChannelInfo (
 222   IN EFI_IDE_CONTROLLER_INIT_PROTOCOL   *This,
 223   IN UINT8                              Channel,
 224   OUT BOOLEAN                           *Enabled,
 225   OUT UINT8                             *MaxDevices
 226   )
 227 ;
 228
 229 /**
 230   The notifications from the driver entity that it is about to enter a certain
 231   phase of the IDE channel enumeration process.
 232
 233   This function can be used to notify the IDE controller driver to perform
 234   specific actions, including any chipset-specific initialization, so that the
 235   chipset is ready to enter the next phase. Seven notification points are defined
 236   at this time.
 237
 238   More synchronization points may be added as required in the future.
 239
 240   @param[in] This      The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
 241   @param[in] Phase     The phase during enumeration.
 242   @param[in] Channel   Zero-based channel number.
 243
 244   @retval EFI_SUCCESS             The notification was accepted without any errors.
 245   @retval EFI_UNSUPPORTED         Phase is not supported.
 246   @retval EFI_INVALID_PARAMETER   Channel is invalid (Channel >= ChannelCount).
 247   @retval EFI_NOT_READY           This phase cannot be entered at this time; for
 248                                   example, an attempt was made to enter a Phase
 249                                   without having entered one or more previous
 250                                   Phase.
 251
 252 **/
 253 EFI_STATUS
 254 EFIAPI
 255 IdeInitNotifyPhase (
 256   IN EFI_IDE_CONTROLLER_INIT_PROTOCOL   *This,
 257   IN EFI_IDE_CONTROLLER_ENUM_PHASE      Phase,
 258   IN UINT8                              Channel
 259   )
 260 ;
 261
 262 /**
 263   Submits the device information to the IDE controller driver.
 264
 265   This function is used by the driver entity to pass detailed information about
 266   a particular device to the IDE controller driver. The driver entity obtains
 267   this information by issuing an ATA or ATAPI IDENTIFY_DEVICE command. IdentifyData
 268   is the pointer to the response data buffer. The IdentifyData buffer is owned
 269   by the driver entity, and the IDE controller driver must make a local copy
 270   of the entire buffer or parts of the buffer as needed. The original IdentifyData
 271   buffer pointer may not be valid when
 272
 273     - EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() or
 274     - EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode() is called at a later point.
 275
 276   The IDE controller driver may consult various fields of EFI_IDENTIFY_DATA to
 277   compute the optimum mode for the device. These fields are not limited to the
 278   timing information. For example, an implementation of the IDE controller driver
 279   may examine the vendor and type/mode field to match known bad drives.
 280
 281   The driver entity may submit drive information in any order, as long as it
 282   submits information for all the devices belonging to the enumeration group
 283   before EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() is called for any device
 284   in that enumeration group. If a device is absent, EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
 285   should be called with IdentifyData set to NULL.  The IDE controller driver may
 286   not have any other mechanism to know whether a device is present or not. Therefore,
 287   setting IdentifyData to NULL does not constitute an error condition.
 288   EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData() can be called only once for a
 289   given (Channel, Device) pair.
 290
 291   @param[in] This           A pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
 292   @param[in] Channel        Zero-based channel number.
 293   @param[in] Device         Zero-based device number on the Channel.
 294   @param[in] IdentifyData   The device's response to the ATA IDENTIFY_DEVICE command.
 295
 296   @retval EFI_SUCCESS             The information was accepted without any errors.
 297   @retval EFI_INVALID_PARAMETER   Channel is invalid (Channel >= ChannelCount).
 298   @retval EFI_INVALID_PARAMETER   Device is invalid.
 299
 300 **/
 301 EFI_STATUS
 302 EFIAPI
 303 IdeInitSubmitData (
 304   IN EFI_IDE_CONTROLLER_INIT_PROTOCOL   *This,
 305   IN UINT8                              Channel,
 306   IN UINT8                              Device,
 307   IN EFI_IDENTIFY_DATA                  *IdentifyData
 308   )
 309 ;
 310
 311 /**
 312   Disqualifies specific modes for an IDE device.
 313
 314   This function allows the driver entity or other drivers (such as platform
 315   drivers) to reject certain timing modes and request the IDE controller driver
 316   to recalculate modes. This function allows the driver entity and the IDE
 317   controller driver to negotiate the timings on a per-device basis. This function
 318   is useful in the case of drives that lie about their capabilities. An example
 319   is when the IDE device fails to accept the timing modes that are calculated
 320   by the IDE controller driver based on the response to the Identify Drive command.
 321
 322   If the driver entity does not want to limit the ATA timing modes and leave that
 323   decision to the IDE controller driver, it can either not call this function for
 324   the given device or call this function and set the Valid flag to FALSE for all
 325   modes that are listed in EFI_ATA_COLLECTIVE_MODE.
 326
 327   The driver entity may disqualify modes for a device in any order and any number
 328   of times.
 329
 330   This function can be called multiple times to invalidate multiple modes of the
 331   same type (e.g., Programmed Input/Output [PIO] modes 3 and 4). See the ATA/ATAPI
 332   specification for more information on PIO modes.
 333
 334   For Serial ATA (SATA) controllers, this member function can be used to disqualify
 335   a higher transfer rate mode on a given channel. For example, a platform driver
 336   may inform the IDE controller driver to not use second-generation (Gen2) speeds
 337   for a certain SATA drive.
 338
 339   @param[in] This       The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
 340   @param[in] Channel    The zero-based channel number.
 341   @param[in] Device     The zero-based device number on the Channel.
 342   @param[in] BadModes   The modes that the device does not support and that
 343                         should be disqualified.
 344
 345   @retval EFI_SUCCESS             The modes were accepted without any errors.
 346   @retval EFI_INVALID_PARAMETER   Channel is invalid (Channel >= ChannelCount).
 347   @retval EFI_INVALID_PARAMETER   Device is invalid.
 348   @retval EFI_INVALID_PARAMETER   IdentifyData is NULL.
 349
 350 **/
 351 EFI_STATUS
 352 EFIAPI
 353 IdeInitDisqualifyMode (
 354   IN EFI_IDE_CONTROLLER_INIT_PROTOCOL   *This,
 355   IN UINT8                              Channel,
 356   IN UINT8                              Device,
 357   IN EFI_ATA_COLLECTIVE_MODE            *BadModes
 358   )
 359 ;
 360
 361 /**
 362   Returns the information about the optimum modes for the specified IDE device.
 363
 364   This function is used by the driver entity to obtain the optimum ATA modes for
 365   a specific device.  The IDE controller driver takes into account the following
 366   while calculating the mode:
 367     - The IdentifyData inputs to EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
 368     - The BadModes inputs to EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode()
 369
 370   The driver entity is required to call EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
 371   for all the devices that belong to an enumeration group before calling
 372   EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() for any device in the same group.
 373
 374   The IDE controller driver will use controller- and possibly platform-specific
 375   algorithms to arrive at SupportedModes.  The IDE controller may base its
 376   decision on user preferences and other considerations as well. This function
 377   may be called multiple times because the driver entity may renegotiate the mode
 378   with the IDE controller driver using EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode().
 379
 380   The driver entity may collect timing information for various devices in any
 381   order. The driver entity is responsible for making sure that all the dependencies
 382   are satisfied. For example, the SupportedModes information for device A that
 383   was previously returned may become stale after a call to
 384   EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode() for device B.
 385
 386   The buffer SupportedModes is allocated by the callee because the caller does
 387   not necessarily know the size of the buffer. The type EFI_ATA_COLLECTIVE_MODE
 388   is defined in a way that allows for future extensibility and can be of variable
 389   length. This memory pool should be deallocated by the caller when it is no
 390   longer necessary.
 391
 392   The IDE controller driver for a Serial ATA (SATA) controller can use this
 393   member function to force a lower speed (first-generation [Gen1] speeds on a
 394   second-generation [Gen2]-capable hardware).  The IDE controller driver can
 395   also allow the driver entity to stay with the speed that has been negotiated
 396   by the physical layer.
 397
 398   @param[in]  This             The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
 399   @param[in]  Channel          A zero-based channel number.
 400   @param[in]  Device           A zero-based device number on the Channel.
 401   @param[out] SupportedModes   The optimum modes for the device.
 402
 403   @retval EFI_SUCCESS             SupportedModes was returned.
 404   @retval EFI_INVALID_PARAMETER   Channel is invalid (Channel >= ChannelCount).
 405   @retval EFI_INVALID_PARAMETER   Device is invalid.
 406   @retval EFI_INVALID_PARAMETER   SupportedModes is NULL.
 407   @retval EFI_NOT_READY           Modes cannot be calculated due to a lack of
 408                                   data.  This error may happen if
 409                                   EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
 410                                   and EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyData()
 411                                   were not called for at least one drive in the
 412                                   same enumeration group.
 413
 414 **/
 415 EFI_STATUS
 416 EFIAPI
 417 IdeInitCalculateMode (
 418   IN EFI_IDE_CONTROLLER_INIT_PROTOCOL   *This,
 419   IN UINT8                              Channel,
 420   IN UINT8                              Device,
 421   OUT EFI_ATA_COLLECTIVE_MODE           **SupportedModes
 422   )
 423 ;
 424
 425 /**
 426   Commands the IDE controller driver to program the IDE controller hardware
 427   so that the specified device can operate at the specified mode.
 428
 429   This function is used by the driver entity to instruct the IDE controller
 430   driver to program the IDE controller hardware to the specified modes. This
 431   function can be called only once for a particular device. For a Serial ATA
 432   (SATA) Advanced Host Controller Interface (AHCI) controller, no controller-
 433   specific programming may be required.
 434
 435   @param[in] This      Pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
 436   @param[in] Channel   Zero-based channel number.
 437   @param[in] Device    Zero-based device number on the Channel.
 438   @param[in] Modes     The modes to set.
 439
 440   @retval EFI_SUCCESS             The command was accepted without any errors.
 441   @retval EFI_INVALID_PARAMETER   Channel is invalid (Channel >= ChannelCount).
 442   @retval EFI_INVALID_PARAMETER   Device is invalid.
 443   @retval EFI_NOT_READY           Modes cannot be set at this time due to lack of data.
 444   @retval EFI_DEVICE_ERROR        Modes cannot be set due to hardware failure.
 445                                   The driver entity should not use this device.
 446
 447 **/
 448 EFI_STATUS
 449 EFIAPI
 450 IdeInitSetTiming (
 451   IN EFI_IDE_CONTROLLER_INIT_PROTOCOL   *This,
 452   IN UINT8                              Channel,
 453   IN UINT8                              Device,
 454   IN EFI_ATA_COLLECTIVE_MODE            *Modes
 455   )
 456 ;
 457
 458 //
 459 // Forward reference declaration
 460 //
 461 /**
 462   Retrieves a Unicode string that is the user readable name of the UEFI Driver.
 463
 464   @param This           A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
 465   @param Language       A pointer to a three character ISO 639-2 language identifier.
 466                         This is the language of the driver name that that the caller
 467                         is requesting, and it must match one of the languages specified
 468                         in SupportedLanguages.  The number of languages supported by a
 469                         driver is up to the driver writer.
 470   @param DriverName     A pointer to the Unicode string to return.  This Unicode string
 471                         is the name of the driver specified by This in the language
 472                         specified by Language.
 473
 474   @retval EFI_SUCCESS           The Unicode string for the Driver specified by This
 475                                 and the language specified by Language was returned
 476                                 in DriverName.
 477   @retval EFI_INVALID_PARAMETER Language is NULL.
 478   @retval EFI_INVALID_PARAMETER DriverName is NULL.
 479   @retval EFI_UNSUPPORTED       The driver specified by This does not support the
 480                                 language specified by Language.
 481 **/
 482 EFI_STATUS
 483 EFIAPI
 484 SataControllerComponentNameGetDriverName (
 485   IN EFI_COMPONENT_NAME_PROTOCOL    *This,
 486   IN CHAR8                          *Language,
 487   OUT CHAR16                        **DriverName
 488   )
 489 ;
 490
 491 /**
 492   Retrieves a Unicode string that is the user readable name of the controller
 493   that is being managed by an UEFI Driver.
 494
 495   @param This                   A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
 496   @param ControllerHandle       The handle of a controller that the driver specified by
 497                                 This is managing.  This handle specifies the controller
 498                                 whose name is to be returned.
 499   @param OPTIONAL   ChildHandle The handle of the child controller to retrieve the name
 500                                 of.  This is an optional parameter that may be NULL.  It
 501                                 will be NULL for device drivers.  It will also be NULL
 502                                 for a bus drivers that wish to retrieve the name of the
 503                                 bus controller.  It will not be NULL for a bus driver
 504                                 that wishes to retrieve the name of a child controller.
 505   @param Language               A pointer to a three character ISO 639-2 language
 506                                 identifier.  This is the language of the controller name
 507                                 that that the caller is requesting, and it must match one
 508                                 of the languages specified in SupportedLanguages.  The
 509                                 number of languages supported by a driver is up to the
 510                                 driver writer.
 511   @param ControllerName         A pointer to the Unicode string to return.  This Unicode
 512                                 string is the name of the controller specified by
 513                                 ControllerHandle and ChildHandle in the language
 514                                 specified by Language from the point of view of the
 515                                 driver specified by This.
 516
 517   @retval EFI_SUCCESS           The Unicode string for the user readable name in the
 518                                 language specified by Language for the driver
 519                                 specified by This was returned in DriverName.
 520   @retval EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE.
 521   @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
 522                                 EFI_HANDLE.
 523   @retval EFI_INVALID_PARAMETER Language is NULL.
 524   @retval EFI_INVALID_PARAMETER ControllerName is NULL.
 525   @retval EFI_UNSUPPORTED       The driver specified by This is not currently
 526                                 managing the controller specified by
 527                                 ControllerHandle and ChildHandle.
 528   @retval EFI_UNSUPPORTED       The driver specified by This does not support the
 529                                 language specified by Language.
 530 **/
 531 EFI_STATUS
 532 EFIAPI
 533 SataControllerComponentNameGetControllerName (
 534   IN EFI_COMPONENT_NAME_PROTOCOL    *This,
 535   IN EFI_HANDLE                     ControllerHandle,
 536   IN EFI_HANDLE                     ChildHandle OPTIONAL,
 537   IN CHAR8                          *Language,
 538   OUT CHAR16                        **ControllerName
 539   )
 540 ;
 541
 542 #endif