EdkModulePkg/Bus/Pci/IdeBus/Dxe/idebus.c

   1 /** @file
   2   Copyright (c) 2006, Intel Corporation
   3   All rights reserved. This program and the accompanying materials
   4   are licensed and made available under the terms and conditions of the BSD License
   5   which accompanies this distribution.  The full text of the license may be found at
   6   http://opensource.org/licenses/bsd-license.php
   7
   8   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
   9   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  10
  11   @par Revision Reference:
  12   This module is modified from DXE\IDE module for Ide Contriller Init support
  13
  14 **/
  15
  16 #include "idebus.h"
  17
  18 #define PCI_CLASS_MASS_STORAGE  0x01
  19 #define PCI_SUB_CLASS_IDE       0x01
  20
  21
  22 //
  23 // IDE Bus Driver Binding Protocol Instance
  24 //
  25 EFI_DRIVER_BINDING_PROTOCOL gIDEBusDriverBinding = {
  26   IDEBusDriverBindingSupported,
  27   IDEBusDriverBindingStart,
  28   IDEBusDriverBindingStop,
  29   0x10,
  30   NULL,
  31   NULL
  32 };
  33
  34 //
  35 // ***********************************************************************************
  36 // IDEBusDriverBindingSupported
  37 // ***********************************************************************************
  38 //
  39 /**
  40   Register Driver Binding protocol for this driver.
  41
  42   @param[in] This   -- A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
  43   @param[in] ControllerHandle    -- The handle of the controller to test.
  44   @param[in] RemainingDevicePath -- A pointer to the remaining portion of a device path.
  45
  46   @retval  EFI_SUCCESS Driver loaded.
  47   @retval  other Driver not loaded.
  48
  49 **/
  50 EFI_STATUS
  51 EFIAPI
  52 IDEBusDriverBindingSupported (
  53   IN EFI_DRIVER_BINDING_PROTOCOL  *This,
  54   IN EFI_HANDLE                   Controller,
  55   IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath
  56   )
  57 // TODO:    Controller - add argument and description to function comment
  58 // TODO:    EFI_UNSUPPORTED - add return value to function comment
  59 {
  60   EFI_STATUS                        Status;
  61   EFI_DEVICE_PATH_PROTOCOL          *ParentDevicePath;
  62   EFI_DEV_PATH                      *Node;
  63   EFI_IDE_CONTROLLER_INIT_PROTOCOL  *IdeInit;
  64
  65   if (RemainingDevicePath != NULL) {
  66     Node = (EFI_DEV_PATH *) RemainingDevicePath;
  67     if (Node->DevPath.Type != MESSAGING_DEVICE_PATH ||
  68         Node->DevPath.SubType != MSG_ATAPI_DP ||
  69         DevicePathNodeLength(&Node->DevPath) != sizeof(ATAPI_DEVICE_PATH)) {
  70       return EFI_UNSUPPORTED;
  71     }
  72   }
  73
  74   //
  75   // Open the IO Abstraction(s) needed to perform the supported test
  76   //
  77   Status = gBS->OpenProtocol (
  78                   Controller,
  79                   &gEfiDevicePathProtocolGuid,
  80                   (VOID **) &ParentDevicePath,
  81                   This->DriverBindingHandle,
  82                   Controller,
  83                   EFI_OPEN_PROTOCOL_BY_DRIVER
  84                   );
  85   if (Status == EFI_ALREADY_STARTED) {
  86     return EFI_SUCCESS;
  87   }
  88
  89   if (EFI_ERROR (Status)) {
  90     return Status;
  91   }
  92
  93   //
  94   // Clsoe protocol, don't use device path protocol in the .Support() function
  95   //
  96   gBS->CloseProtocol (
  97         Controller,
  98         &gEfiDevicePathProtocolGuid,
  99         This->DriverBindingHandle,
 100         Controller
 101         );
 102
 103   //
 104   // Verify the Ide Controller Init Protocol, which installed by the
 105   // IdeController module.
 106   // Note 1: PciIo protocol has been opened BY_DRIVER by ide_init, so We can't
 107   //         open BY_DRIVER here) That's why we don't check pciio protocol
 108   // Note 2: ide_init driver check ide controller's pci config space, so we dont
 109   //         check here any more to save code size
 110   //
 111   Status = gBS->OpenProtocol (
 112                   Controller,
 113                   &gEfiIdeControllerInitProtocolGuid,
 114                   (VOID **) &IdeInit,
 115                   This->DriverBindingHandle,
 116                   Controller,
 117                   EFI_OPEN_PROTOCOL_BY_DRIVER
 118                   );
 119
 120   if (Status == EFI_ALREADY_STARTED) {
 121     return EFI_SUCCESS;
 122   }
 123
 124   //
 125   // If protocols were opened normally, closed it
 126   //
 127   gBS->CloseProtocol (
 128         Controller,
 129         &gEfiIdeControllerInitProtocolGuid,
 130         This->DriverBindingHandle,
 131         Controller
 132         );
 133
 134   return Status;
 135 }
 136
 137 //
 138 // ***********************************************************************************
 139 // IDEBusDriverBindingStart
 140 // ***********************************************************************************
 141 //
 142 /**
 143   Start this driver on Controller by detecting all disks and installing
 144   BlockIo protocol on them.
 145
 146   @param  This Protocol instance pointer.
 147   @param  Controller Handle of device to bind driver to.
 148   @param  RemainingDevicePath Not used, always produce all possible children.
 149
 150   @retval  EFI_SUCCESS This driver is added to ControllerHandle.
 151   @retval  EFI_ALREADY_STARTED This driver is already running on ControllerHandle.
 152   @retval  other This driver does not support this device.
 153
 154 **/
 155 EFI_STATUS
 156 EFIAPI
 157 IDEBusDriverBindingStart (
 158   IN EFI_DRIVER_BINDING_PROTOCOL  *This,
 159   IN EFI_HANDLE                   Controller,
 160   IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath
 161   )
 162 {
 163   EFI_STATUS                        Status;
 164   EFI_STATUS                        SavedStatus;
 165   EFI_PCI_IO_PROTOCOL               *PciIo;
 166   EFI_DEVICE_PATH_PROTOCOL          *ParentDevicePath;
 167   EFI_DEV_PATH                      *Node;
 168   UINT8                             IdeChannel;
 169   UINT8                             BeginningIdeChannel;
 170   UINT8                             EndIdeChannel;
 171   UINT8                             IdeDevice;
 172   UINT8                             BeginningIdeDevice;
 173   UINT8                             EndIdeDevice;
 174   IDE_BLK_IO_DEV                    *IdeBlkIoDevice[IdeMaxChannel][IdeMaxDevice];
 175   IDE_BLK_IO_DEV                    *IdeBlkIoDevicePtr;
 176   IDE_REGISTERS_BASE_ADDR           IdeRegsBaseAddr[IdeMaxChannel];
 177   ATA_TRANSFER_MODE                 TransferMode;
 178   ATA_DRIVE_PARMS                   DriveParameters;
 179   EFI_DEV_PATH                      NewNode;
 180   UINT8                             ConfigurationOptions;
 181   UINT16                            CommandBlockBaseAddr;
 182   UINT16                            ControlBlockBaseAddr;
 183   UINTN                             DataSize;
 184   IDE_BUS_DRIVER_PRIVATE_DATA       *IdeBusDriverPrivateData;
 185
 186   //
 187   // Local variables declaration for IdeControllerInit support
 188   //
 189   EFI_IDE_CONTROLLER_INIT_PROTOCOL  *IdeInit;
 190   BOOLEAN                           EnumAll;
 191   BOOLEAN                           ChannelEnabled;
 192   UINT8                             ChannelCount;
 193   UINT8                             MaxDevices;
 194   EFI_IDENTIFY_DATA                 IdentifyData;
 195   EFI_ATA_COLLECTIVE_MODE           *SupportedModes;
 196
 197   IdeBusDriverPrivateData = NULL;
 198   SupportedModes          = NULL;
 199
 200   //
 201   // Perform IdeBus initialization
 202   //
 203   Status = gBS->OpenProtocol (
 204                   Controller,
 205                   &gEfiDevicePathProtocolGuid,
 206                   (VOID **) &ParentDevicePath,
 207                   This->DriverBindingHandle,
 208                   Controller,
 209                   EFI_OPEN_PROTOCOL_BY_DRIVER
 210                   );
 211   if ((EFI_ERROR (Status)) && (Status != EFI_ALREADY_STARTED)) {
 212     return Status;
 213   }
 214
 215   //
 216   // Now open the IDE_CONTROLLER_INIT protocol. Step7.1
 217   //
 218   Status = gBS->OpenProtocol (
 219                   Controller,
 220                   &gEfiIdeControllerInitProtocolGuid,
 221                   (VOID **) &IdeInit,
 222                   This->DriverBindingHandle,
 223                   Controller,
 224                   EFI_OPEN_PROTOCOL_BY_DRIVER
 225                   );
 226
 227   //
 228   // The following OpenProtocol function with _GET_PROTOCOL attribute and
 229   // will not return EFI_ALREADY_STARTED, so save it for now
 230   //
 231   SavedStatus = Status;
 232
 233   if ((EFI_ERROR (Status)) && (Status != EFI_ALREADY_STARTED)) {
 234     DEBUG ((EFI_D_ERROR, "Open Init, Status=%x", Status));
 235     //
 236     // open protocol is not SUCCESS or not ALREADY_STARTED, error exit
 237     //
 238     goto ErrorExit;
 239   }
 240
 241   //
 242   // Save Enumall and ChannelCount. Step7.2
 243   //
 244   EnumAll       = IdeInit->EnumAll;
 245   ChannelCount  = IdeInit->ChannelCount;
 246
 247   //
 248   // Consume PCI I/O protocol. Note that the OpenProtocol with _GET_PROTOCOL
 249   // attribute will not return EFI_ALREADY_STARTED
 250   //
 251   Status = gBS->OpenProtocol (
 252                   Controller,
 253                   &gEfiPciIoProtocolGuid,
 254                   (VOID **) &PciIo,
 255                   This->DriverBindingHandle,
 256                   Controller,
 257                   EFI_OPEN_PROTOCOL_GET_PROTOCOL
 258                   );
 259   if (EFI_ERROR (Status)) {
 260     DEBUG ((EFI_D_ERROR, "Open PciIo, Status=%x", Status));
 261     goto ErrorExit;
 262   }
 263
 264   //
 265   // We must check EFI_ALREADY_STARTED because many ATAPI devices are removable
 266   //
 267   if (SavedStatus != EFI_ALREADY_STARTED) {
 268     IdeBusDriverPrivateData = AllocatePool (sizeof (IDE_BUS_DRIVER_PRIVATE_DATA));
 269     if (IdeBusDriverPrivateData == NULL) {
 270       Status = EFI_OUT_OF_RESOURCES;
 271       goto ErrorExit;
 272     }
 273
 274     ZeroMem (IdeBusDriverPrivateData, sizeof (IDE_BUS_DRIVER_PRIVATE_DATA));
 275     Status = gBS->InstallMultipleProtocolInterfaces (
 276                     &Controller,
 277                     &gEfiCallerIdGuid,
 278                     IdeBusDriverPrivateData,
 279                     NULL
 280                     );
 281     if (EFI_ERROR (Status)) {
 282       goto ErrorExit;
 283     }
 284
 285   } else {
 286     Status = gBS->OpenProtocol (
 287                     Controller,
 288                     &gEfiCallerIdGuid,
 289                     (VOID **) &IdeBusDriverPrivateData,
 290                     This->DriverBindingHandle,
 291                     Controller,
 292                     EFI_OPEN_PROTOCOL_GET_PROTOCOL
 293                     );
 294     if (EFI_ERROR (Status)) {
 295       IdeBusDriverPrivateData = NULL;
 296       goto ErrorExit;
 297     }
 298   }
 299
 300   Status = PciIo->Attributes (
 301                     PciIo,
 302                     EfiPciIoAttributeOperationEnable,
 303                     EFI_PCI_DEVICE_ENABLE,
 304                     NULL
 305                     );
 306   if (EFI_ERROR (Status)) {
 307     goto ErrorExit;
 308   }
 309
 310   //
 311   // Read the environment variable that contains the IDEBus Driver's
 312   // Config options that were set by the Driver Configuration Protocol
 313   //
 314   DataSize = sizeof (ConfigurationOptions);
 315   Status = gRT->GetVariable (
 316                   (CHAR16 *) L"Configuration",
 317                   &gEfiCallerIdGuid,
 318                   NULL,
 319                   &DataSize,
 320                   &ConfigurationOptions
 321                   );
 322   if (EFI_ERROR (Status)) {
 323     ConfigurationOptions = 0x0f;
 324   }
 325
 326   if (EnumAll) {
 327     //
 328     // If IdeInit->EnumAll is TRUE, must enumerate all IDE device anyway
 329     //
 330     BeginningIdeChannel = IdePrimary;
 331     EndIdeChannel       = IdeSecondary;
 332     BeginningIdeDevice  = IdeMaster;
 333     EndIdeDevice        = IdeSlave;
 334   } else if (RemainingDevicePath == NULL) {
 335     //
 336     // RemainingDevicePath is NULL, scan IDE bus for each device;
 337     //
 338     BeginningIdeChannel = IdePrimary;
 339     EndIdeChannel       = IdeSecondary;
 340     BeginningIdeDevice  = IdeMaster;
 341     //
 342     // default, may be redefined by IdeInit
 343     //
 344     EndIdeDevice = IdeSlave;
 345   } else {
 346     //
 347     // RemainingDevicePath is not NULL, only scan the specified device.
 348     //
 349     Node                = (EFI_DEV_PATH *) RemainingDevicePath;
 350     BeginningIdeChannel = Node->Atapi.PrimarySecondary;
 351     EndIdeChannel       = BeginningIdeChannel;
 352     BeginningIdeDevice  = Node->Atapi.SlaveMaster;
 353     EndIdeDevice        = BeginningIdeDevice;
 354   }
 355
 356   //
 357   // Obtain IDE IO port registers' base addresses
 358   //
 359   Status = GetIdeRegistersBaseAddr (PciIo, IdeRegsBaseAddr);
 360   if (EFI_ERROR (Status)) {
 361     goto ErrorExit;
 362   }
 363
 364   //
 365   // Report status code: begin IdeBus initialization
 366   //
 367   REPORT_STATUS_CODE_WITH_DEVICE_PATH (
 368     EFI_PROGRESS_CODE,
 369     (EFI_IO_BUS_ATA_ATAPI | EFI_IOB_PC_RESET),
 370     ParentDevicePath
 371     );
 372
 373   //
 374   // Strictly follow the enumeration based on IDE_CONTROLLER_INIT protocol
 375   //
 376   for (IdeChannel = BeginningIdeChannel; IdeChannel <= EndIdeChannel; IdeChannel++) {
 377
 378     IdeInit->NotifyPhase (IdeInit, EfiIdeBeforeChannelEnumeration, IdeChannel);
 379
 380     //
 381     // now obtain channel information fron IdeControllerInit protocol. Step9
 382     //
 383     Status = IdeInit->GetChannelInfo (
 384                         IdeInit,
 385                         IdeChannel,
 386                         &ChannelEnabled,
 387                         &MaxDevices
 388                         );
 389     if (EFI_ERROR (Status)) {
 390       DEBUG ((EFI_D_ERROR, "[GetChannel, Status=%x]", Status));
 391       continue;
 392     }
 393
 394     if (!ChannelEnabled) {
 395       continue;
 396     }
 397
 398     EndIdeDevice = (UINT8) EFI_MIN ((MaxDevices - 1), EndIdeDevice);
 399
 400     //
 401     // Now inform the IDE Controller Init Module. Sept10
 402     //
 403     IdeInit->NotifyPhase (IdeInit, EfiIdeBeforeChannelReset, IdeChannel);
 404
 405     //
 406     // No reset channel function implemented. Sept11
 407     //
 408     IdeInit->NotifyPhase (IdeInit, EfiIdeAfterChannelReset, IdeChannel);
 409
 410     //
 411     // Step13
 412     //
 413     IdeInit->NotifyPhase (
 414               IdeInit,
 415               EfiIdeBusBeforeDevicePresenceDetection,
 416               IdeChannel
 417               );
 418
 419     //
 420     // Prepare to detect IDE device of this channel
 421     //
 422     InitializeIDEChannelData ();
 423
 424     //
 425     // -- 1st inner loop --- Master/Slave ------------  Step14
 426     //
 427     for (IdeDevice = BeginningIdeDevice; IdeDevice <= EndIdeDevice; IdeDevice++) {
 428       //
 429       // Check whether the configuration options allow this device
 430       //
 431       if (!(ConfigurationOptions & (1 << (IdeChannel * 2 + IdeDevice)))) {
 432         continue;
 433       }
 434
 435       //
 436       // The device has been scanned in another Start(), No need to scan it again
 437       // for perf optimization.
 438       //
 439       if (IdeBusDriverPrivateData->HaveScannedDevice[IdeChannel * 2 + IdeDevice]) {
 440         continue;
 441       }
 442
 443       //
 444       // create child handle for the detected device.
 445       //
 446       IdeBlkIoDevice[IdeChannel][IdeDevice] = AllocatePool (sizeof (IDE_BLK_IO_DEV));
 447       if (IdeBlkIoDevice[IdeChannel][IdeDevice] == NULL) {
 448         continue;
 449       }
 450
 451       IdeBlkIoDevicePtr = IdeBlkIoDevice[IdeChannel][IdeDevice];
 452
 453       ZeroMem (IdeBlkIoDevicePtr, sizeof (IDE_BLK_IO_DEV));
 454
 455       IdeBlkIoDevicePtr->Signature  = IDE_BLK_IO_DEV_SIGNATURE;
 456       IdeBlkIoDevicePtr->Channel    = IdeChannel;
 457       IdeBlkIoDevicePtr->Device     = IdeDevice;
 458
 459       //
 460       // initialize Block IO interface's Media pointer
 461       //
 462       IdeBlkIoDevicePtr->BlkIo.Media = &IdeBlkIoDevicePtr->BlkMedia;
 463
 464       //
 465       // Initialize IDE IO port addresses, including Command Block registers
 466       // and Control Block registers
 467       //
 468       IdeBlkIoDevicePtr->IoPort = AllocatePool (sizeof (IDE_BASE_REGISTERS));
 469       if (IdeBlkIoDevicePtr->IoPort == NULL) {
 470         continue;
 471       }
 472
 473       ZeroMem (IdeBlkIoDevicePtr->IoPort, sizeof (IDE_BASE_REGISTERS));
 474       CommandBlockBaseAddr = IdeRegsBaseAddr[IdeChannel].CommandBlockBaseAddr;
 475       ControlBlockBaseAddr = IdeRegsBaseAddr[IdeChannel].ControlBlockBaseAddr;
 476
 477       IdeBlkIoDevicePtr->IoPort->Data = CommandBlockBaseAddr;
 478       (*(UINT16 *) &IdeBlkIoDevicePtr->IoPort->Reg1) = (UINT16) (CommandBlockBaseAddr + 0x01);
 479       IdeBlkIoDevicePtr->IoPort->SectorCount = (UINT16) (CommandBlockBaseAddr + 0x02);
 480       IdeBlkIoDevicePtr->IoPort->SectorNumber = (UINT16) (CommandBlockBaseAddr + 0x03);
 481       IdeBlkIoDevicePtr->IoPort->CylinderLsb = (UINT16) (CommandBlockBaseAddr + 0x04);
 482       IdeBlkIoDevicePtr->IoPort->CylinderMsb = (UINT16) (CommandBlockBaseAddr + 0x05);
 483       IdeBlkIoDevicePtr->IoPort->Head = (UINT16) (CommandBlockBaseAddr + 0x06);
 484       (*(UINT16 *) &IdeBlkIoDevicePtr->IoPort->Reg) = (UINT16) (CommandBlockBaseAddr + 0x07);
 485
 486       (*(UINT16 *) &IdeBlkIoDevicePtr->IoPort->Alt) = ControlBlockBaseAddr;
 487       IdeBlkIoDevicePtr->IoPort->DriveAddress = (UINT16) (ControlBlockBaseAddr + 0x01);
 488
 489       IdeBlkIoDevicePtr->IoPort->MasterSlave = (UINT16) ((IdeDevice == IdeMaster) ? 1 : 0);
 490
 491       IdeBlkIoDevicePtr->PciIo = PciIo;
 492       IdeBlkIoDevicePtr->IdeBusDriverPrivateData = IdeBusDriverPrivateData;
 493       IdeBlkIoDevicePtr->IoPort->BusMasterBaseAddr = IdeRegsBaseAddr[IdeChannel].BusMasterBaseAddr;
 494
 495       //
 496       // Report Status code: is about to detect IDE drive
 497       //
 498       REPORT_STATUS_CODE_WITH_DEVICE_PATH (
 499         EFI_PROGRESS_CODE,
 500         (EFI_IO_BUS_ATA_ATAPI | EFI_P_PC_PRESENCE_DETECT),
 501         IdeBlkIoDevicePtr->DevicePath
 502         );
 503
 504       //
 505       // Discover device, now!
 506       //
 507       PERF_START (0, "DiscoverIdeDevice", "IDE", 0);
 508       Status = DiscoverIdeDevice (IdeBlkIoDevicePtr);
 509       PERF_END (0, "DiscoverIdeDevice", "IDE", 0);
 510
 511       IdeBusDriverPrivateData->HaveScannedDevice[IdeChannel * 2 + IdeDevice]  = TRUE;
 512       IdeBusDriverPrivateData->DeviceProcessed[IdeChannel * 2 + IdeDevice]    = FALSE;
 513
 514       if (!EFI_ERROR (Status)) {
 515         //
 516         // Set Device Path
 517         //
 518         ZeroMem (&NewNode, sizeof (NewNode));
 519         NewNode.DevPath.Type    = MESSAGING_DEVICE_PATH;
 520         NewNode.DevPath.SubType = MSG_ATAPI_DP;
 521         SetDevicePathNodeLength (&NewNode.DevPath, sizeof (ATAPI_DEVICE_PATH));
 522
 523         NewNode.Atapi.PrimarySecondary  = (UINT8) IdeBlkIoDevicePtr->Channel;
 524         NewNode.Atapi.SlaveMaster       = (UINT8) IdeBlkIoDevicePtr->Device;
 525         NewNode.Atapi.Lun               = IdeBlkIoDevicePtr->Lun;
 526         IdeBlkIoDevicePtr->DevicePath = AppendDevicePathNode (
 527                                           ParentDevicePath,
 528                                           &NewNode.DevPath
 529                                           );
 530         if (IdeBlkIoDevicePtr->DevicePath == NULL) {
 531           ReleaseIdeResources (IdeBlkIoDevicePtr);
 532           continue;
 533         }
 534
 535         //
 536         // Submit identify data to IDE controller init driver
 537         //
 538         CopyMem (&IdentifyData, IdeBlkIoDevicePtr->pIdData, sizeof (IdentifyData));
 539         IdeBusDriverPrivateData->DeviceFound[IdeChannel * 2 + IdeDevice] = TRUE;
 540         IdeInit->SubmitData (IdeInit, IdeChannel, IdeDevice, &IdentifyData);
 541       } else {
 542         //
 543         // Device detection failed
 544         //
 545         IdeBusDriverPrivateData->DeviceFound[IdeChannel * 2 + IdeDevice] = FALSE;
 546         IdeInit->SubmitData (IdeInit, IdeChannel, IdeDevice, NULL);
 547         ReleaseIdeResources (IdeBlkIoDevicePtr);
 548         IdeBlkIoDevicePtr = NULL;
 549       }
 550       //
 551       // end of 1st inner loop ---
 552       //
 553     }
 554     //
 555     // end of 1st outer loop =========
 556     //
 557   }
 558
 559   //
 560   // = 2nd outer loop == Primary/Secondary =================
 561   //
 562   for (IdeChannel = BeginningIdeChannel; IdeChannel <= EndIdeChannel; IdeChannel++) {
 563
 564     //
 565     // -- 2nd inner loop --- Master/Slave --------
 566     //
 567     for (IdeDevice = BeginningIdeDevice; IdeDevice <= EndIdeDevice; IdeDevice++) {
 568
 569       if (IdeBusDriverPrivateData->DeviceProcessed[IdeChannel * 2 + IdeDevice]) {
 570         continue;
 571       }
 572
 573       if (!IdeBusDriverPrivateData->DeviceFound[IdeChannel * 2 + IdeDevice]) {
 574         continue;
 575       }
 576
 577       Status = IdeInit->CalculateMode (
 578                           IdeInit,
 579                           IdeChannel,
 580                           IdeDevice,
 581                           &SupportedModes
 582                           );
 583       if (EFI_ERROR (Status)) {
 584         DEBUG ((EFI_D_ERROR, "[bStStp20S=%x]", Status));
 585         continue;
 586       }
 587
 588       IdeBlkIoDevicePtr = IdeBlkIoDevice[IdeChannel][IdeDevice];
 589
 590       //
 591       // Set best supported PIO mode on this IDE device
 592       //
 593       if (SupportedModes->PioMode.Mode <= ATA_PIO_MODE_2) {
 594         TransferMode.ModeCategory = ATA_MODE_CATEGORY_DEFAULT_PIO;
 595       } else {
 596         TransferMode.ModeCategory = ATA_MODE_CATEGORY_FLOW_PIO;
 597       }
 598
 599       TransferMode.ModeNumber = (UINT8) (SupportedModes->PioMode.Mode);
 600
 601       if (SupportedModes->ExtModeCount == 0){
 602         Status                  = SetDeviceTransferMode (IdeBlkIoDevicePtr, &TransferMode);
 603
 604         if (EFI_ERROR (Status)) {
 605           IdeBusDriverPrivateData->DeviceFound[IdeChannel * 2 + IdeDevice] = FALSE;
 606           ReleaseIdeResources (IdeBlkIoDevicePtr);
 607           IdeBlkIoDevicePtr = NULL;
 608           continue;
 609         }
 610       }
 611
 612       //
 613       // Set supported DMA mode on this IDE device. Note that UDMA & MDMA cann't
 614       // be set together. Only one DMA mode can be set to a device. If setting
 615       // DMA mode operation fails, we can continue moving on because we only use
 616       // PIO mode at boot time. DMA modes are used by certain kind of OS booting
 617       //
 618       if (SupportedModes->UdmaMode.Valid) {
 619
 620         TransferMode.ModeCategory = ATA_MODE_CATEGORY_UDMA;
 621         TransferMode.ModeNumber   = (UINT8) (SupportedModes->UdmaMode.Mode);
 622         Status                    = SetDeviceTransferMode (IdeBlkIoDevicePtr, &TransferMode);
 623
 624         if (EFI_ERROR (Status)) {
 625           IdeBusDriverPrivateData->DeviceFound[IdeChannel * 2 + IdeDevice] = FALSE;
 626           ReleaseIdeResources (IdeBlkIoDevicePtr);
 627           IdeBlkIoDevicePtr = NULL;
 628           continue;
 629         }
 630
 631         EnableInterrupt (IdeBlkIoDevicePtr);
 632       } else if (SupportedModes->MultiWordDmaMode.Valid) {
 633
 634         TransferMode.ModeCategory = ATA_MODE_CATEGORY_MDMA;
 635         TransferMode.ModeNumber   = (UINT8) SupportedModes->MultiWordDmaMode.Mode;
 636         Status                    = SetDeviceTransferMode (IdeBlkIoDevicePtr, &TransferMode);
 637
 638         if (EFI_ERROR (Status)) {
 639           IdeBusDriverPrivateData->DeviceFound[IdeChannel * 2 + IdeDevice] = FALSE;
 640           ReleaseIdeResources (IdeBlkIoDevicePtr);
 641           IdeBlkIoDevicePtr = NULL;
 642           continue;
 643         }
 644
 645         EnableInterrupt (IdeBlkIoDevicePtr);
 646       }
 647       //
 648       // Init driver parameters
 649       //
 650       DriveParameters.Sector          = (UINT8) IdeBlkIoDevicePtr->pIdData->AtaData.sectors_per_track;
 651       DriveParameters.Heads           = (UINT8) (IdeBlkIoDevicePtr->pIdData->AtaData.heads - 1);
 652       DriveParameters.MultipleSector  = (UINT8) IdeBlkIoDevicePtr->pIdData->AtaData.multi_sector_cmd_max_sct_cnt;
 653       //
 654       // Set Parameters for the device:
 655       // 1) Init
 656       // 2) Establish the block count for READ/WRITE MULTIPLE (EXT) command
 657       //
 658       if ((IdeBlkIoDevicePtr->Type == IdeHardDisk) || (IdeBlkIoDevicePtr->Type == Ide48bitAddressingHardDisk)) {
 659         Status = SetDriveParameters (IdeBlkIoDevicePtr, &DriveParameters);
 660       }
 661
 662       //
 663       // Record PIO mode used in private data
 664       //
 665       IdeBlkIoDevicePtr->PioMode = SupportedModes->PioMode.Mode;
 666
 667       //
 668       // Set IDE controller Timing Blocks in the PCI Configuration Space
 669       //
 670       IdeInit->SetTiming (IdeInit, IdeChannel, IdeDevice, SupportedModes);
 671
 672       //
 673       // Add Component Name for the IDE/ATAPI device that was discovered.
 674       //
 675       IdeBlkIoDevicePtr->ControllerNameTable = NULL;
 676       ADD_NAME (IdeBlkIoDevicePtr);
 677
 678       Status = gBS->InstallMultipleProtocolInterfaces (
 679                       &IdeBlkIoDevicePtr->Handle,
 680                       &gEfiDevicePathProtocolGuid,
 681                       IdeBlkIoDevicePtr->DevicePath,
 682                       &gEfiBlockIoProtocolGuid,
 683                       &IdeBlkIoDevicePtr->BlkIo,
 684                       &gEfiDiskInfoProtocolGuid,
 685                       &IdeBlkIoDevicePtr->DiskInfo,
 686                       NULL
 687                       );
 688
 689       if (EFI_ERROR (Status)) {
 690         ReleaseIdeResources (IdeBlkIoDevicePtr);
 691       }
 692
 693       gBS->OpenProtocol (
 694             Controller,
 695             &gEfiPciIoProtocolGuid,
 696             (VOID **) &PciIo,
 697             This->DriverBindingHandle,
 698             IdeBlkIoDevicePtr->Handle,
 699             EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
 700             );
 701
 702       IdeBusDriverPrivateData->DeviceProcessed[IdeChannel * 2 + IdeDevice] = TRUE;
 703
 704       //
 705       // Report status code: device eanbled!
 706       //
 707       REPORT_STATUS_CODE_WITH_DEVICE_PATH (
 708         EFI_PROGRESS_CODE,
 709         (EFI_IO_BUS_ATA_ATAPI | EFI_P_PC_ENABLE),
 710         IdeBlkIoDevicePtr->DevicePath
 711         );
 712
 713       //
 714       // Create event to clear pending IDE interrupt
 715       //
 716       Status = gBS->CreateEvent (
 717                       EFI_EVENT_SIGNAL_EXIT_BOOT_SERVICES,
 718                       EFI_TPL_NOTIFY,
 719                       ClearInterrupt,
 720                       IdeBlkIoDevicePtr,
 721                       &IdeBlkIoDevicePtr->ExitBootServiceEvent
 722                       );
 723
 724       //
 725       // end of 2nd inner loop ----
 726       //
 727     }
 728     //
 729     // end of 2nd outer loop ==========
 730     //
 731   }
 732
 733   //
 734   // All configurations done! Notify IdeController to do post initialization
 735   // work such as saving IDE controller PCI settings for S3 resume
 736   //
 737   IdeInit->NotifyPhase (IdeInit, EfiIdeBusPhaseMaximum, 0);
 738
 739   if (SupportedModes != NULL) {
 740     gBS->FreePool (SupportedModes);
 741   }
 742
 743   PERF_START (0, "Finish IDE detection", "IDE", 1);
 744   PERF_END (0, "Finish IDE detection", "IDE", 0);
 745
 746   return EFI_SUCCESS;
 747
 748 ErrorExit:
 749
 750   //
 751   // Report error code: controller error
 752   //
 753   REPORT_STATUS_CODE_WITH_DEVICE_PATH (
 754     EFI_ERROR_CODE | EFI_ERROR_MINOR,
 755     (EFI_IO_BUS_ATA_ATAPI | EFI_IOB_EC_CONTROLLER_ERROR),
 756     ParentDevicePath
 757     );
 758
 759   gBS->CloseProtocol (
 760         Controller,
 761         &gEfiIdeControllerInitProtocolGuid,
 762         This->DriverBindingHandle,
 763         Controller
 764         );
 765
 766   gBS->UninstallMultipleProtocolInterfaces (
 767         Controller,
 768         &gEfiCallerIdGuid,
 769         IdeBusDriverPrivateData,
 770         NULL
 771         );
 772
 773   if (IdeBusDriverPrivateData != NULL) {
 774     gBS->FreePool (IdeBusDriverPrivateData);
 775   }
 776
 777   if (SupportedModes != NULL) {
 778     gBS->FreePool (SupportedModes);
 779   }
 780
 781   gBS->CloseProtocol (
 782         Controller,
 783         &gEfiPciIoProtocolGuid,
 784         This->DriverBindingHandle,
 785         Controller
 786         );
 787
 788   gBS->CloseProtocol (
 789         Controller,
 790         &gEfiDevicePathProtocolGuid,
 791         This->DriverBindingHandle,
 792         Controller
 793         );
 794
 795   return Status;
 796
 797 }
 798
 799 //
 800 // ***********************************************************************************
 801 // IDEBusDriverBindingStop
 802 // ***********************************************************************************
 803 //
 804 /**
 805   Stop this driver on Controller Handle.
 806
 807   @param  This Protocol instance pointer.
 808   @param  DeviceHandle Handle of device to stop driver on
 809   @param  NumberOfChildren Not used
 810   @param  ChildHandleBuffer Not used
 811
 812   @retval  EFI_SUCCESS This driver is removed DeviceHandle
 813   @retval  other This driver was not removed from this device
 814
 815 **/
 816 EFI_STATUS
 817 EFIAPI
 818 IDEBusDriverBindingStop (
 819   IN  EFI_DRIVER_BINDING_PROTOCOL     *This,
 820   IN  EFI_HANDLE                      Controller,
 821   IN  UINTN                           NumberOfChildren,
 822   IN  EFI_HANDLE                      *ChildHandleBuffer
 823   )
 824 // TODO:    Controller - add argument and description to function comment
 825 // TODO:    EFI_DEVICE_ERROR - add return value to function comment
 826 {
 827   EFI_STATUS                  Status;
 828   EFI_PCI_IO_PROTOCOL         *PciIo;
 829   BOOLEAN                     AllChildrenStopped;
 830   UINTN                       Index;
 831   IDE_BUS_DRIVER_PRIVATE_DATA *IdeBusDriverPrivateData;
 832
 833   IdeBusDriverPrivateData = NULL;
 834
 835   if (NumberOfChildren == 0) {
 836
 837     Status = gBS->OpenProtocol (
 838                     Controller,
 839                     &gEfiPciIoProtocolGuid,
 840                     (VOID **) &PciIo,
 841                     This->DriverBindingHandle,
 842                     Controller,
 843                     EFI_OPEN_PROTOCOL_GET_PROTOCOL
 844                     );
 845     if (!EFI_ERROR (Status)) {
 846       PciIo->Attributes (
 847               PciIo,
 848               EfiPciIoAttributeOperationDisable,
 849               EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO | EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO | EFI_PCI_DEVICE_ENABLE,
 850               NULL
 851               );
 852     }
 853
 854     gBS->OpenProtocol (
 855           Controller,
 856           &gEfiCallerIdGuid,
 857           (VOID **) &IdeBusDriverPrivateData,
 858           This->DriverBindingHandle,
 859           Controller,
 860           EFI_OPEN_PROTOCOL_GET_PROTOCOL
 861           );
 862
 863     gBS->UninstallMultipleProtocolInterfaces (
 864           Controller,
 865           &gEfiCallerIdGuid,
 866           IdeBusDriverPrivateData,
 867           NULL
 868           );
 869
 870     if (IdeBusDriverPrivateData != NULL) {
 871       gBS->FreePool (IdeBusDriverPrivateData);
 872     }
 873     //
 874     // Close the bus driver
 875     //
 876     gBS->CloseProtocol (
 877           Controller,
 878           &gEfiIdeControllerInitProtocolGuid,
 879           This->DriverBindingHandle,
 880           Controller
 881           );
 882     gBS->CloseProtocol (
 883           Controller,
 884           &gEfiPciIoProtocolGuid,
 885           This->DriverBindingHandle,
 886           Controller
 887           );
 888     gBS->CloseProtocol (
 889           Controller,
 890           &gEfiDevicePathProtocolGuid,
 891           This->DriverBindingHandle,
 892           Controller
 893           );
 894
 895     return EFI_SUCCESS;
 896   }
 897
 898   AllChildrenStopped = TRUE;
 899
 900   for (Index = 0; Index < NumberOfChildren; Index++) {
 901
 902     Status = DeRegisterIdeDevice (This, Controller, ChildHandleBuffer[Index]);
 903
 904     if (EFI_ERROR (Status)) {
 905       AllChildrenStopped = FALSE;
 906     }
 907   }
 908
 909   if (!AllChildrenStopped) {
 910     return EFI_DEVICE_ERROR;
 911   }
 912
 913   return EFI_SUCCESS;
 914 }
 915
 916 //
 917 // ***********************************************************************************
 918 // DeRegisterIdeDevice
 919 // ***********************************************************************************
 920 //
 921 /**
 922   Deregister an IDE device and free resources
 923
 924   @param  This Protocol instance pointer.
 925   @param  Controller Ide device handle
 926   @param  Handle Handle of device to deregister driver on
 927
 928   @return EFI_STATUS
 929
 930 **/
 931 EFI_STATUS
 932 DeRegisterIdeDevice (
 933   IN  EFI_DRIVER_BINDING_PROTOCOL    *This,
 934   IN  EFI_HANDLE                     Controller,
 935   IN  EFI_HANDLE                     Handle
 936   )
 937 // TODO:    EFI_SUCCESS - add return value to function comment
 938 {
 939   EFI_STATUS            Status;
 940   EFI_BLOCK_IO_PROTOCOL *BlkIo;
 941   IDE_BLK_IO_DEV        *IdeBlkIoDevice;
 942   EFI_PCI_IO_PROTOCOL   *PciIo;
 943   UINTN                 Index;
 944
 945   Status = gBS->OpenProtocol (
 946                   Handle,
 947                   &gEfiBlockIoProtocolGuid,
 948                   (VOID **) &BlkIo,
 949                   This->DriverBindingHandle,
 950                   Controller,
 951                   EFI_OPEN_PROTOCOL_GET_PROTOCOL
 952                   );
 953   if (EFI_ERROR (Status)) {
 954     return Status;
 955   }
 956
 957   IdeBlkIoDevice = IDE_BLOCK_IO_DEV_FROM_THIS (BlkIo);
 958
 959   //
 960   // Report Status code: Device disabled
 961   //
 962   REPORT_STATUS_CODE_WITH_DEVICE_PATH (
 963     EFI_PROGRESS_CODE,
 964     (EFI_IO_BUS_ATA_ATAPI | EFI_P_PC_DISABLE),
 965     IdeBlkIoDevice->DevicePath
 966     );
 967
 968   //
 969   // Close the child handle
 970   //
 971   Status = gBS->CloseProtocol (
 972                   Controller,
 973                   &gEfiPciIoProtocolGuid,
 974                   This->DriverBindingHandle,
 975                   Handle
 976                   );
 977
 978   Status = gBS->UninstallMultipleProtocolInterfaces (
 979                   Handle,
 980                   &gEfiDevicePathProtocolGuid,
 981                   IdeBlkIoDevice->DevicePath,
 982                   &gEfiBlockIoProtocolGuid,
 983                   &IdeBlkIoDevice->BlkIo,
 984                   &gEfiDiskInfoProtocolGuid,
 985                   &IdeBlkIoDevice->DiskInfo,
 986                   NULL
 987                   );
 988
 989   if (EFI_ERROR (Status)) {
 990     gBS->OpenProtocol (
 991           Controller,
 992           &gEfiPciIoProtocolGuid,
 993           (VOID **) &PciIo,
 994           This->DriverBindingHandle,
 995           Handle,
 996           EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
 997           );
 998     return Status;
 999   }
1000
1001   //
1002   // Release allocated resources
1003   //
1004   Index = IdeBlkIoDevice->Channel * 2 + IdeBlkIoDevice->Device;
1005   IdeBlkIoDevice->IdeBusDriverPrivateData->HaveScannedDevice[Index] = FALSE;
1006
1007   ReleaseIdeResources (IdeBlkIoDevice);
1008
1009   return EFI_SUCCESS;
1010 }
1011
1012 //
1013 // ***********************************************************************************
1014 // IDEBlkIoReset
1015 // ***********************************************************************************
1016 //
1017 /**
1018   TODO:    This - add argument and description to function comment
1019   TODO:    ExtendedVerification - add argument and description to function comment
1020   TODO:    EFI_DEVICE_ERROR - add return value to function comment
1021
1022 **/
1023 EFI_STATUS
1024 EFIAPI
1025 IDEBlkIoReset (
1026   IN  EFI_BLOCK_IO_PROTOCOL   *This,
1027   IN  BOOLEAN                 ExtendedVerification
1028   )
1029 {
1030   IDE_BLK_IO_DEV  *IdeBlkIoDevice;
1031   EFI_STATUS      Status;
1032
1033   IdeBlkIoDevice = IDE_BLOCK_IO_DEV_FROM_THIS (This);
1034   //
1035   // Requery IDE IO resources in case of the switch of native and legacy modes
1036   //
1037   ReassignIdeResources (IdeBlkIoDevice);
1038
1039   //
1040   // for ATA device, using ATA reset method
1041   //
1042   if (IdeBlkIoDevice->Type == IdeHardDisk ||
1043       IdeBlkIoDevice->Type == Ide48bitAddressingHardDisk) {
1044     return AtaSoftReset (IdeBlkIoDevice);
1045   }
1046
1047   if (IdeBlkIoDevice->Type == IdeUnknown) {
1048     return EFI_DEVICE_ERROR;
1049   }
1050
1051   //
1052   // for ATAPI device, using ATAPI reset method
1053   //
1054   Status = AtapiSoftReset (IdeBlkIoDevice);
1055   if (ExtendedVerification) {
1056     Status = AtaSoftReset (IdeBlkIoDevice);
1057   }
1058
1059   return Status;
1060 }
1061
1062 /**
1063   Read data from block io device
1064
1065   @param  This Protocol instance pointer.
1066   @param  MediaId The media ID of the device
1067   @param  LBA Starting LBA address to read data
1068   @param  BufferSize The size of data to be read
1069   @param  Buffer Caller supplied buffer to save data
1070
1071   @return read data status
1072
1073 **/
1074 EFI_STATUS
1075 EFIAPI
1076 IDEBlkIoReadBlocks (
1077   IN  EFI_BLOCK_IO_PROTOCOL   *This,
1078   IN  UINT32                  MediaId,
1079   IN  EFI_LBA                 LBA,
1080   IN  UINTN                   BufferSize,
1081   OUT VOID                    *Buffer
1082   )
1083 // TODO:    EFI_DEVICE_ERROR - add return value to function comment
1084 {
1085   IDE_BLK_IO_DEV  *IdeBlkIoDevice;
1086
1087   IdeBlkIoDevice = IDE_BLOCK_IO_DEV_FROM_THIS (This);
1088
1089   //
1090   // Requery IDE IO resources in case of the switch of native and legacy modes
1091   //
1092   ReassignIdeResources (IdeBlkIoDevice);
1093
1094   //
1095   // For ATA compatible device, use ATA read block's mechanism
1096   //
1097   if (IdeBlkIoDevice->Type == IdeHardDisk ||
1098       IdeBlkIoDevice->Type == Ide48bitAddressingHardDisk) {
1099     return AtaBlkIoReadBlocks (
1100             IdeBlkIoDevice,
1101             MediaId,
1102             LBA,
1103             BufferSize,
1104             Buffer
1105             );
1106   }
1107
1108   if (IdeBlkIoDevice->Type == IdeUnknown) {
1109     return EFI_DEVICE_ERROR;
1110   }
1111
1112   //
1113   // for ATAPI device, using ATAPI read block's mechanism
1114   //
1115   return AtapiBlkIoReadBlocks (
1116           IdeBlkIoDevice,
1117           MediaId,
1118           LBA,
1119           BufferSize,
1120           Buffer
1121           );
1122
1123 }
1124
1125 /**
1126   Write data to block io device
1127
1128   @param  This Protocol instance pointer.
1129   @param  MediaId The media ID of the device
1130   @param  LBA Starting LBA address to write data
1131   @param  BufferSize The size of data to be written
1132   @param  Buffer Caller supplied buffer to save data
1133
1134   @return write data status
1135
1136 **/
1137 EFI_STATUS
1138 EFIAPI
1139 IDEBlkIoWriteBlocks (
1140   IN  EFI_BLOCK_IO_PROTOCOL   *This,
1141   IN  UINT32                  MediaId,
1142   IN  EFI_LBA                 LBA,
1143   IN  UINTN                   BufferSize,
1144   IN  VOID                    *Buffer
1145   )
1146 // TODO:    EFI_DEVICE_ERROR - add return value to function comment
1147 {
1148   IDE_BLK_IO_DEV  *IdeBlkIoDevice;
1149
1150   IdeBlkIoDevice = IDE_BLOCK_IO_DEV_FROM_THIS (This);
1151   //
1152   // Requery IDE IO resources in case of the switch of native and legacy modes
1153   //
1154   ReassignIdeResources (IdeBlkIoDevice);
1155
1156   //
1157   // for ATA device, using ATA write block's mechanism
1158   //
1159   if (IdeBlkIoDevice->Type == IdeHardDisk ||
1160       IdeBlkIoDevice->Type == Ide48bitAddressingHardDisk) {
1161
1162     return AtaBlkIoWriteBlocks (
1163             IdeBlkIoDevice,
1164             MediaId,
1165             LBA,
1166             BufferSize,
1167             Buffer
1168             );
1169   }
1170
1171   if (IdeBlkIoDevice->Type == IdeUnknown) {
1172     return EFI_DEVICE_ERROR;
1173   }
1174
1175   //
1176   // for ATAPI device, using ATAPI write block's mechanism
1177   //
1178   return AtapiBlkIoWriteBlocks (
1179           IdeBlkIoDevice,
1180           MediaId,
1181           LBA,
1182           BufferSize,
1183           Buffer
1184           );
1185 }
1186
1187 //
1188 // ***********************************************************************************
1189 // IDEBlkIoFlushBlocks
1190 // ***********************************************************************************
1191 //
1192 /**
1193   TODO:    This - add argument and description to function comment
1194   TODO:    EFI_SUCCESS - add return value to function comment
1195 **/
1196 EFI_STATUS
1197 EFIAPI
1198 IDEBlkIoFlushBlocks (
1199   IN  EFI_BLOCK_IO_PROTOCOL   *This
1200   )
1201 {
1202   //
1203   // return directly
1204   //
1205   return EFI_SUCCESS;
1206 }
1207
1208 /**
1209   Return the results of the Inquiry command to a drive in InquiryData.
1210   Data format of Inquiry data is defined by the Interface GUID.
1211
1212   @param  This Protocol instance pointer.
1213   @param  InquiryData Results of Inquiry command to device
1214   @param  InquiryDataSize Size of InquiryData in bytes.
1215
1216   @retval  EFI_SUCCESS InquiryData valid
1217   @retval  EFI_NOT_FOUND Device does not support this data class
1218   @retval  EFI_DEVICE_ERROR Error reading InquiryData from device
1219   @retval  EFI_BUFFER_TOO_SMALL IntquiryDataSize not big enough
1220
1221 **/
1222 EFI_STATUS
1223 EFIAPI
1224 IDEDiskInfoInquiry (
1225   IN     EFI_DISK_INFO_PROTOCOL   *This,
1226   IN OUT VOID                     *InquiryData,
1227   IN OUT UINT32                   *InquiryDataSize
1228   )
1229 {
1230   IDE_BLK_IO_DEV  *IdeBlkIoDevice;
1231
1232   IdeBlkIoDevice = IDE_BLOCK_IO_DEV_FROM_DISK_INFO_THIS (This);
1233
1234   if (*InquiryDataSize < sizeof (INQUIRY_DATA)) {
1235     *InquiryDataSize = sizeof (INQUIRY_DATA);
1236     return EFI_BUFFER_TOO_SMALL;
1237   }
1238
1239   if (IdeBlkIoDevice->pInquiryData == NULL) {
1240     return EFI_NOT_FOUND;
1241   }
1242
1243   gBS->CopyMem (InquiryData, IdeBlkIoDevice->pInquiryData, sizeof (INQUIRY_DATA));
1244   *InquiryDataSize = sizeof (INQUIRY_DATA);
1245
1246   return EFI_SUCCESS;
1247 }
1248
1249 /**
1250   Return the results of the Identify command to a drive in IdentifyData.
1251   Data format of Identify data is defined by the Interface GUID.
1252
1253   @param  This Protocol instance pointer.
1254   @param  IdentifyData Results of Identify command to device
1255   @param  IdentifyDataSize Size of IdentifyData in bytes.
1256
1257   @retval  EFI_SUCCESS IdentifyData valid
1258   @retval  EFI_NOT_FOUND Device does not support this data class
1259   @retval  EFI_DEVICE_ERROR Error reading IdentifyData from device
1260   @retval  EFI_BUFFER_TOO_SMALL IdentifyDataSize not big enough
1261
1262 **/
1263 EFI_STATUS
1264 EFIAPI
1265 IDEDiskInfoIdentify (
1266   IN     EFI_DISK_INFO_PROTOCOL   *This,
1267   IN OUT VOID                     *IdentifyData,
1268   IN OUT UINT32                   *IdentifyDataSize
1269   )
1270 {
1271   IDE_BLK_IO_DEV  *IdeBlkIoDevice;
1272
1273   IdeBlkIoDevice = IDE_BLOCK_IO_DEV_FROM_DISK_INFO_THIS (This);
1274
1275   if (*IdentifyDataSize < sizeof (EFI_IDENTIFY_DATA)) {
1276     *IdentifyDataSize = sizeof (EFI_IDENTIFY_DATA);
1277     return EFI_BUFFER_TOO_SMALL;
1278   }
1279
1280   if (IdeBlkIoDevice->pIdData == NULL) {
1281     return EFI_NOT_FOUND;
1282   }
1283
1284   gBS->CopyMem (IdentifyData, IdeBlkIoDevice->pIdData, sizeof (EFI_IDENTIFY_DATA));
1285   *IdentifyDataSize = sizeof (EFI_IDENTIFY_DATA);
1286
1287   return EFI_SUCCESS;
1288 }
1289
1290 /**
1291   Return the results of the Request Sense command to a drive in SenseData.
1292   Data format of Sense data is defined by the Interface GUID.
1293
1294   @param  This Protocol instance pointer.
1295   @param  SenseData Results of Request Sense command to device
1296   @param  SenseDataSize Size of SenseData in bytes.
1297   @param  SenseDataNumber Type of SenseData
1298
1299   @retval  EFI_SUCCESS InquiryData valid
1300   @retval  EFI_NOT_FOUND Device does not support this data class
1301   @retval  EFI_DEVICE_ERROR Error reading InquiryData from device
1302   @retval  EFI_BUFFER_TOO_SMALL SenseDataSize not big enough
1303
1304 **/
1305 EFI_STATUS
1306 EFIAPI
1307 IDEDiskInfoSenseData (
1308   IN     EFI_DISK_INFO_PROTOCOL   *This,
1309   IN OUT VOID                     *SenseData,
1310   IN OUT UINT32                   *SenseDataSize,
1311   OUT    UINT8                    *SenseDataNumber
1312   )
1313 {
1314   return EFI_NOT_FOUND;
1315 }
1316
1317 /**
1318   Return the results of the Request Sense command to a drive in SenseData.
1319   Data format of Sense data is defined by the Interface GUID.
1320
1321   @param  This Protocol instance pointer.
1322   @param  IdeChannel Primary or Secondary
1323   @param  IdeDevice Master or Slave
1324
1325   @retval  EFI_SUCCESS IdeChannel and IdeDevice are valid
1326   @retval  EFI_UNSUPPORTED This is not an IDE device
1327
1328 **/
1329 EFI_STATUS
1330 EFIAPI
1331 IDEDiskInfoWhichIde (
1332   IN  EFI_DISK_INFO_PROTOCOL   *This,
1333   OUT UINT32                   *IdeChannel,
1334   OUT UINT32                   *IdeDevice
1335   )
1336 {
1337   IDE_BLK_IO_DEV  *IdeBlkIoDevice;
1338
1339   IdeBlkIoDevice  = IDE_BLOCK_IO_DEV_FROM_DISK_INFO_THIS (This);
1340   *IdeChannel     = IdeBlkIoDevice->Channel;
1341   *IdeDevice      = IdeBlkIoDevice->Device;
1342
1343   return EFI_SUCCESS;
1344 }