MdeModulePkg/Bus/Pci/SataControllerDxe/SataController.h

   1 /** @file
   2   Header file for Sata Controller driver.
   3
   4   Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
   5   Copyright (c) 2018, ARM Ltd. All rights reserved.<BR>
   6   SPDX-License-Identifier: BSD-2-Clause-Patent
   7
   8 **/
   9
  10 #ifndef _SATA_CONTROLLER_H_
  11 #define _SATA_CONTROLLER_H_
  12
  13 #include <Uefi.h>
  14
  15 #include <IndustryStandard/Pci.h>
  16
  17 #include <Protocol/ComponentName.h>
  18 #include <Protocol/DriverBinding.h>
  19 #include <Protocol/PciIo.h>
  20 #include <Protocol/IdeControllerInit.h>
  21
  22 #include <Library/BaseLib.h>
  23 #include <Library/BaseMemoryLib.h>
  24 #include <Library/DebugLib.h>
  25 #include <Library/UefiLib.h>
  26 #include <Library/UefiDriverEntryPoint.h>
  27 #include <Library/MemoryAllocationLib.h>
  28 #include <Library/UefiBootServicesTableLib.h>
  29
  30 //
  31 // Global Variables definitions
  32 //
  33 extern EFI_DRIVER_BINDING_PROTOCOL  gSataControllerDriverBinding;
  34 extern EFI_COMPONENT_NAME_PROTOCOL  gSataControllerComponentName;
  35 extern EFI_COMPONENT_NAME2_PROTOCOL gSataControllerComponentName2;
  36
  37 #define AHCI_BAR_INDEX 0x05
  38 #define R_AHCI_CAP 0x0
  39 #define   B_AHCI_CAP_NPS (BIT4 | BIT3 | BIT2 | BIT1 | BIT0) // Number of Ports
  40 #define   B_AHCI_CAP_SPM BIT17                              // Supports Port Multiplier
  41 #define R_AHCI_PI  0xC
  42
  43 ///
  44 /// AHCI each channel can have up to 1 device
  45 ///
  46 #define AHCI_MAX_DEVICES       0x01
  47
  48 ///
  49 /// AHCI each channel can have 15 devices in the presence of a multiplier
  50 ///
  51 #define AHCI_MULTI_MAX_DEVICES 0x0F
  52
  53 ///
  54 /// IDE supports 2 channel max
  55 ///
  56 #define IDE_MAX_CHANNEL 0x02
  57
  58 ///
  59 /// IDE supports 2 devices max
  60 ///
  61 #define IDE_MAX_DEVICES 0x02
  62
  63 #define SATA_ENUMER_ALL FALSE
  64
  65 //
  66 // Sata Controller driver private data structure
  67 //
  68 #define SATA_CONTROLLER_SIGNATURE SIGNATURE_32('S','A','T','A')
  69
  70 typedef struct _EFI_SATA_CONTROLLER_PRIVATE_DATA {
  71   //
  72   // Standard signature used to identify Sata Controller private data
  73   //
  74   UINT32                            Signature;
  75
  76   //
  77   // Protocol instance of IDE_CONTROLLER_INIT produced by this driver
  78   //
  79   EFI_IDE_CONTROLLER_INIT_PROTOCOL  IdeInit;
  80
  81   //
  82   // Copy of protocol pointers used by this driver
  83   //
  84   EFI_PCI_IO_PROTOCOL               *PciIo;
  85
  86   //
  87   // The number of devices that are supported by this channel
  88   //
  89   UINT8                             DeviceCount;
  90
  91   //
  92   // The highest disqulified mode for each attached device,
  93   // From ATA/ATAPI spec, if a mode is not supported,
  94   // the modes higher than it is also not supported
  95   //
  96   EFI_ATA_COLLECTIVE_MODE           *DisqualifiedModes;
  97
  98   //
  99   // A copy of EFI_IDENTIFY_DATA data for each attached SATA device and its flag
 100   //
 101   EFI_IDENTIFY_DATA                 *IdentifyData;
 102   BOOLEAN                           *IdentifyValid;
 103
 104   //
 105   // Track the state so that the PCI attributes that were modified
 106   // can be restored to the original value later.
 107   //
 108   BOOLEAN                           PciAttributesChanged;
 109
 110   //
 111   // Copy of the original PCI Attributes
 112   //
 113   UINT64                            OriginalPciAttributes;
 114 } EFI_SATA_CONTROLLER_PRIVATE_DATA;
 115
 116 #define SATA_CONTROLLER_PRIVATE_DATA_FROM_THIS(a) CR(a, EFI_SATA_CONTROLLER_PRIVATE_DATA, IdeInit, SATA_CONTROLLER_SIGNATURE)
 117
 118 //
 119 // Driver binding functions declaration
 120 //
 121 /**
 122   Supported function of Driver Binding protocol for this driver.
 123   Test to see if this driver supports ControllerHandle.
 124
 125   @param This                   Protocol instance pointer.
 126   @param Controller             Handle of device to test.
 127   @param RemainingDevicePath    A pointer to the device path. Should be ignored by
 128                                 device driver.
 129
 130   @retval EFI_SUCCESS           This driver supports this device.
 131   @retval EFI_ALREADY_STARTED   This driver is already running on this device.
 132   @retval other                 This driver does not support this device.
 133
 134 **/
 135 EFI_STATUS
 136 EFIAPI
 137 SataControllerSupported (
 138   IN EFI_DRIVER_BINDING_PROTOCOL    *This,
 139   IN EFI_HANDLE                     Controller,
 140   IN EFI_DEVICE_PATH_PROTOCOL       *RemainingDevicePath
 141   );
 142
 143 /**
 144   This routine is called right after the .Supported() called and
 145   Start this driver on ControllerHandle.
 146
 147   @param This                   Protocol instance pointer.
 148   @param Controller             Handle of device to bind driver to.
 149   @param RemainingDevicePath    A pointer to the device path. Should be ignored by
 150                                 device driver.
 151
 152   @retval EFI_SUCCESS           This driver is added to this device.
 153   @retval EFI_ALREADY_STARTED   This driver is already running on this device.
 154   @retval other                 Some error occurs when binding this driver to this device.
 155
 156 **/
 157 EFI_STATUS
 158 EFIAPI
 159 SataControllerStart (
 160   IN EFI_DRIVER_BINDING_PROTOCOL    *This,
 161   IN EFI_HANDLE                     Controller,
 162   IN EFI_DEVICE_PATH_PROTOCOL       *RemainingDevicePath
 163   );
 164
 165 /**
 166   Stop this driver on ControllerHandle.
 167
 168   @param This               A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
 169   @param Controller         A handle to the device being stopped.
 170   @param NumberOfChildren   The number of child device handles in ChildHandleBuffer.
 171   @param ChildHandleBuffer  An array of child handles to be freed.
 172
 173   @retval EFI_SUCCESS       This driver is removed from this device.
 174   @retval other             Some error occurs when removing this driver from this device.
 175
 176 **/
 177 EFI_STATUS
 178 EFIAPI
 179 SataControllerStop (
 180   IN EFI_DRIVER_BINDING_PROTOCOL    *This,
 181   IN EFI_HANDLE                     Controller,
 182   IN UINTN                          NumberOfChildren,
 183   IN EFI_HANDLE                     *ChildHandleBuffer
 184   );
 185
 186 //
 187 // IDE controller init functions declaration
 188 //
 189 /**
 190   Returns the information about the specified IDE channel.
 191
 192   This function can be used to obtain information about a particular IDE channel.
 193   The driver entity uses this information during the enumeration process.
 194
 195   If Enabled is set to FALSE, the driver entity will not scan the channel. Note
 196   that it will not prevent an operating system driver from scanning the channel.
 197
 198   For most of today's controllers, MaxDevices will either be 1 or 2. For SATA
 199   controllers, this value will always be 1. SATA configurations can contain SATA
 200   port multipliers. SATA port multipliers behave like SATA bridges and can support
 201   up to 16 devices on the other side. If a SATA port out of the IDE controller
 202   is connected to a port multiplier, MaxDevices will be set to the number of SATA
 203   devices that the port multiplier supports. Because today's port multipliers
 204   support up to fifteen SATA devices, this number can be as large as fifteen. The IDE
 205   bus driver is required to scan for the presence of port multipliers behind an SATA
 206   controller and enumerate up to MaxDevices number of devices behind the port
 207   multiplier.
 208
 209   In this context, the devices behind a port multiplier constitute a channel.
 210
 211   @param[in]  This                The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
 212   @param[in]  Channel             Zero-based channel number.
 213   @param[out] Enabled             TRUE if this channel is enabled.  Disabled channels
 214                                   are not scanned to see if any devices are present.
 215   @param[out] MaxDevices          The maximum number of IDE devices that the bus driver
 216                                   can expect on this channel.  For the ATA/ATAPI
 217                                   specification, version 6, this number will either be
 218                                   one or two. For Serial ATA (SATA) configurations with a
 219                                   port multiplier, this number can be as large as fifteen.
 220
 221
 222   @retval EFI_SUCCESS             Information was returned without any errors.
 223   @retval EFI_INVALID_PARAMETER   Channel is invalid (Channel >= ChannelCount).
 224
 225 **/
 226 EFI_STATUS
 227 EFIAPI
 228 IdeInitGetChannelInfo (
 229   IN EFI_IDE_CONTROLLER_INIT_PROTOCOL   *This,
 230   IN UINT8                              Channel,
 231   OUT BOOLEAN                           *Enabled,
 232   OUT UINT8                             *MaxDevices
 233   );
 234
 235 /**
 236   The notifications from the driver entity that it is about to enter a certain
 237   phase of the IDE channel enumeration process.
 238
 239   This function can be used to notify the IDE controller driver to perform
 240   specific actions, including any chipset-specific initialization, so that the
 241   chipset is ready to enter the next phase. Seven notification points are defined
 242   at this time.
 243
 244   More synchronization points may be added as required in the future.
 245
 246   @param[in] This                 The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL
 247                                   instance.
 248   @param[in] Phase                The phase during enumeration.
 249   @param[in] Channel              Zero-based channel number.
 250
 251   @retval EFI_SUCCESS             The notification was accepted without any errors.
 252   @retval EFI_UNSUPPORTED         Phase is not supported.
 253   @retval EFI_INVALID_PARAMETER   Channel is invalid (Channel >= ChannelCount).
 254   @retval EFI_NOT_READY           This phase cannot be entered at this time; for
 255                                   example, an attempt was made to enter a Phase
 256                                   without having entered one or more previous
 257                                   Phase.
 258
 259 **/
 260 EFI_STATUS
 261 EFIAPI
 262 IdeInitNotifyPhase (
 263   IN EFI_IDE_CONTROLLER_INIT_PROTOCOL   *This,
 264   IN EFI_IDE_CONTROLLER_ENUM_PHASE      Phase,
 265   IN UINT8                              Channel
 266   );
 267
 268 /**
 269   Submits the device information to the IDE controller driver.
 270
 271   This function is used by the driver entity to pass detailed information about
 272   a particular device to the IDE controller driver. The driver entity obtains
 273   this information by issuing an ATA or ATAPI IDENTIFY_DEVICE command. IdentifyData
 274   is the pointer to the response data buffer. The IdentifyData buffer is owned
 275   by the driver entity, and the IDE controller driver must make a local copy
 276   of the entire buffer or parts of the buffer as needed. The original IdentifyData
 277   buffer pointer may not be valid when
 278
 279     - EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() or
 280     - EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode() is called at a later point.
 281
 282   The IDE controller driver may consult various fields of EFI_IDENTIFY_DATA to
 283   compute the optimum mode for the device. These fields are not limited to the
 284   timing information. For example, an implementation of the IDE controller driver
 285   may examine the vendor and type/mode field to match known bad drives.
 286
 287   The driver entity may submit drive information in any order, as long as it
 288   submits information for all the devices belonging to the enumeration group
 289   before EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() is called for any device
 290   in that enumeration group. If a device is absent, EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
 291   should be called with IdentifyData set to NULL.  The IDE controller driver may
 292   not have any other mechanism to know whether a device is present or not. Therefore,
 293   setting IdentifyData to NULL does not constitute an error condition.
 294   EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData() can be called only once for a
 295   given (Channel, Device) pair.
 296
 297   @param[in] This                 A pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
 298   @param[in] Channel              Zero-based channel number.
 299   @param[in] Device               Zero-based device number on the Channel.
 300   @param[in] IdentifyData         The device's response to the ATA IDENTIFY_DEVICE command.
 301
 302   @retval EFI_SUCCESS             The information was accepted without any errors.
 303   @retval EFI_INVALID_PARAMETER   Channel is invalid (Channel >= ChannelCount).
 304   @retval EFI_INVALID_PARAMETER   Device is invalid.
 305
 306 **/
 307 EFI_STATUS
 308 EFIAPI
 309 IdeInitSubmitData (
 310   IN EFI_IDE_CONTROLLER_INIT_PROTOCOL   *This,
 311   IN UINT8                              Channel,
 312   IN UINT8                              Device,
 313   IN EFI_IDENTIFY_DATA                  *IdentifyData
 314   );
 315
 316 /**
 317   Disqualifies specific modes for an IDE device.
 318
 319   This function allows the driver entity or other drivers (such as platform
 320   drivers) to reject certain timing modes and request the IDE controller driver
 321   to recalculate modes. This function allows the driver entity and the IDE
 322   controller driver to negotiate the timings on a per-device basis. This function
 323   is useful in the case of drives that lie about their capabilities. An example
 324   is when the IDE device fails to accept the timing modes that are calculated
 325   by the IDE controller driver based on the response to the Identify Drive command.
 326
 327   If the driver entity does not want to limit the ATA timing modes and leave that
 328   decision to the IDE controller driver, it can either not call this function for
 329   the given device or call this function and set the Valid flag to FALSE for all
 330   modes that are listed in EFI_ATA_COLLECTIVE_MODE.
 331
 332   The driver entity may disqualify modes for a device in any order and any number
 333   of times.
 334
 335   This function can be called multiple times to invalidate multiple modes of the
 336   same type (e.g., Programmed Input/Output [PIO] modes 3 and 4). See the ATA/ATAPI
 337   specification for more information on PIO modes.
 338
 339   For Serial ATA (SATA) controllers, this member function can be used to disqualify
 340   a higher transfer rate mode on a given channel. For example, a platform driver
 341   may inform the IDE controller driver to not use second-generation (Gen2) speeds
 342   for a certain SATA drive.
 343
 344   @param[in] This                 The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
 345   @param[in] Channel              The zero-based channel number.
 346   @param[in] Device               The zero-based device number on the Channel.
 347   @param[in] BadModes             The modes that the device does not support and that
 348                                   should be disqualified.
 349
 350   @retval EFI_SUCCESS             The modes were accepted without any errors.
 351   @retval EFI_INVALID_PARAMETER   Channel is invalid (Channel >= ChannelCount).
 352   @retval EFI_INVALID_PARAMETER   Device is invalid.
 353   @retval EFI_INVALID_PARAMETER   IdentifyData is NULL.
 354
 355 **/
 356 EFI_STATUS
 357 EFIAPI
 358 IdeInitDisqualifyMode (
 359   IN EFI_IDE_CONTROLLER_INIT_PROTOCOL   *This,
 360   IN UINT8                              Channel,
 361   IN UINT8                              Device,
 362   IN EFI_ATA_COLLECTIVE_MODE            *BadModes
 363   );
 364
 365 /**
 366   Returns the information about the optimum modes for the specified IDE device.
 367
 368   This function is used by the driver entity to obtain the optimum ATA modes for
 369   a specific device.  The IDE controller driver takes into account the following
 370   while calculating the mode:
 371     - The IdentifyData inputs to EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
 372     - The BadModes inputs to EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode()
 373
 374   The driver entity is required to call EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
 375   for all the devices that belong to an enumeration group before calling
 376   EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() for any device in the same group.
 377
 378   The IDE controller driver will use controller- and possibly platform-specific
 379   algorithms to arrive at SupportedModes.  The IDE controller may base its
 380   decision on user preferences and other considerations as well. This function
 381   may be called multiple times because the driver entity may renegotiate the mode
 382   with the IDE controller driver using EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode().
 383
 384   The driver entity may collect timing information for various devices in any
 385   order. The driver entity is responsible for making sure that all the dependencies
 386   are satisfied. For example, the SupportedModes information for device A that
 387   was previously returned may become stale after a call to
 388   EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode() for device B.
 389
 390   The buffer SupportedModes is allocated by the callee because the caller does
 391   not necessarily know the size of the buffer. The type EFI_ATA_COLLECTIVE_MODE
 392   is defined in a way that allows for future extensibility and can be of variable
 393   length. This memory pool should be deallocated by the caller when it is no
 394   longer necessary.
 395
 396   The IDE controller driver for a Serial ATA (SATA) controller can use this
 397   member function to force a lower speed (first-generation [Gen1] speeds on a
 398   second-generation [Gen2]-capable hardware).  The IDE controller driver can
 399   also allow the driver entity to stay with the speed that has been negotiated
 400   by the physical layer.
 401
 402   @param[in]  This                The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
 403   @param[in]  Channel             A zero-based channel number.
 404   @param[in]  Device              A zero-based device number on the Channel.
 405   @param[out] SupportedModes      The optimum modes for the device.
 406
 407   @retval EFI_SUCCESS             SupportedModes was returned.
 408   @retval EFI_INVALID_PARAMETER   Channel is invalid (Channel >= ChannelCount).
 409   @retval EFI_INVALID_PARAMETER   Device is invalid.
 410   @retval EFI_INVALID_PARAMETER   SupportedModes is NULL.
 411   @retval EFI_NOT_READY           Modes cannot be calculated due to a lack of
 412                                   data.  This error may happen if
 413                                   EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
 414                                   and EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyData()
 415                                   were not called for at least one drive in the
 416                                   same enumeration group.
 417
 418 **/
 419 EFI_STATUS
 420 EFIAPI
 421 IdeInitCalculateMode (
 422   IN EFI_IDE_CONTROLLER_INIT_PROTOCOL   *This,
 423   IN UINT8                              Channel,
 424   IN UINT8                              Device,
 425   OUT EFI_ATA_COLLECTIVE_MODE           **SupportedModes
 426   );
 427
 428 /**
 429   Commands the IDE controller driver to program the IDE controller hardware
 430   so that the specified device can operate at the specified mode.
 431
 432   This function is used by the driver entity to instruct the IDE controller
 433   driver to program the IDE controller hardware to the specified modes. This
 434   function can be called only once for a particular device. For a Serial ATA
 435   (SATA) Advanced Host Controller Interface (AHCI) controller, no controller-
 436   specific programming may be required.
 437
 438   @param[in] This                 Pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
 439   @param[in] Channel              Zero-based channel number.
 440   @param[in] Device               Zero-based device number on the Channel.
 441   @param[in] Modes                The modes to set.
 442
 443   @retval EFI_SUCCESS             The command was accepted without any errors.
 444   @retval EFI_INVALID_PARAMETER   Channel is invalid (Channel >= ChannelCount).
 445   @retval EFI_INVALID_PARAMETER   Device is invalid.
 446   @retval EFI_NOT_READY           Modes cannot be set at this time due to lack of data.
 447   @retval EFI_DEVICE_ERROR        Modes cannot be set due to hardware failure.
 448                                   The driver entity should not use this device.
 449
 450 **/
 451 EFI_STATUS
 452 EFIAPI
 453 IdeInitSetTiming (
 454   IN EFI_IDE_CONTROLLER_INIT_PROTOCOL   *This,
 455   IN UINT8                              Channel,
 456   IN UINT8                              Device,
 457   IN EFI_ATA_COLLECTIVE_MODE            *Modes
 458   );
 459
 460 //
 461 // Forward reference declaration
 462 //
 463 /**
 464   Retrieves a Unicode string that is the user readable name of the UEFI Driver.
 465
 466   @param This           A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
 467   @param Language       A pointer to a three character ISO 639-2 language identifier.
 468                         This is the language of the driver name that that the caller
 469                         is requesting, and it must match one of the languages specified
 470                         in SupportedLanguages.  The number of languages supported by a
 471                         driver is up to the driver writer.
 472   @param DriverName     A pointer to the Unicode string to return.  This Unicode string
 473                         is the name of the driver specified by This in the language
 474                         specified by Language.
 475
 476   @retval EFI_SUCCESS           The Unicode string for the Driver specified by This
 477                                 and the language specified by Language was returned
 478                                 in DriverName.
 479   @retval EFI_INVALID_PARAMETER Language is NULL.
 480   @retval EFI_INVALID_PARAMETER DriverName is NULL.
 481   @retval EFI_UNSUPPORTED       The driver specified by This does not support the
 482                                 language specified by Language.
 483 **/
 484 EFI_STATUS
 485 EFIAPI
 486 SataControllerComponentNameGetDriverName (
 487   IN EFI_COMPONENT_NAME_PROTOCOL    *This,
 488   IN CHAR8                          *Language,
 489   OUT CHAR16                        **DriverName
 490   );
 491
 492 /**
 493   Retrieves a Unicode string that is the user readable name of the controller
 494   that is being managed by an UEFI Driver.
 495
 496   @param This                   A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
 497   @param ControllerHandle       The handle of a controller that the driver specified by
 498                                 This is managing.  This handle specifies the controller
 499                                 whose name is to be returned.
 500   @param OPTIONAL   ChildHandle The handle of the child controller to retrieve the name
 501                                 of.  This is an optional parameter that may be NULL.  It
 502                                 will be NULL for device drivers.  It will also be NULL
 503                                 for a bus drivers that wish to retrieve the name of the
 504                                 bus controller.  It will not be NULL for a bus driver
 505                                 that wishes to retrieve the name of a child controller.
 506   @param Language               A pointer to a three character ISO 639-2 language
 507                                 identifier.  This is the language of the controller name
 508                                 that that the caller is requesting, and it must match one
 509                                 of the languages specified in SupportedLanguages.  The
 510                                 number of languages supported by a driver is up to the
 511                                 driver writer.
 512   @param ControllerName         A pointer to the Unicode string to return.  This Unicode
 513                                 string is the name of the controller specified by
 514                                 ControllerHandle and ChildHandle in the language
 515                                 specified by Language from the point of view of the
 516                                 driver specified by This.
 517
 518   @retval EFI_SUCCESS           The Unicode string for the user readable name in the
 519                                 language specified by Language for the driver
 520                                 specified by This was returned in DriverName.
 521   @retval EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE.
 522   @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
 523                                 EFI_HANDLE.
 524   @retval EFI_INVALID_PARAMETER Language is NULL.
 525   @retval EFI_INVALID_PARAMETER ControllerName is NULL.
 526   @retval EFI_UNSUPPORTED       The driver specified by This is not currently
 527                                 managing the controller specified by
 528                                 ControllerHandle and ChildHandle.
 529   @retval EFI_UNSUPPORTED       The driver specified by This does not support the
 530                                 language specified by Language.
 531 **/
 532 EFI_STATUS
 533 EFIAPI
 534 SataControllerComponentNameGetControllerName (
 535   IN EFI_COMPONENT_NAME_PROTOCOL    *This,
 536   IN EFI_HANDLE                     ControllerHandle,
 537   IN EFI_HANDLE                     ChildHandle OPTIONAL,
 538   IN CHAR8                          *Language,
 539   OUT CHAR16                        **ControllerName
 540   );
 541
 542 #endif
 543