audk/EdkModulePkg/Bus/Pci/IdeBus/Dxe/DriverDiagnostics.c

/** @file
  Copyright (c) 2006, Intel Corporation                                                         
  All rights reserved. This program and the accompanying materials                          
  are licensed and made available under the terms and conditions of the BSD License         
  which accompanies this distribution.  The full text of the license may be found at        
  http://opensource.org/licenses/bsd-license.php                                            

  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             

**/

#include "idebus.h"

#define IDE_BUS_DIAGNOSTIC_ERROR  L"PCI IDE/ATAPI Driver Diagnostics Failed"

//
// EFI Driver Diagnostics Protocol
//
EFI_DRIVER_DIAGNOSTICS_PROTOCOL gIDEBusDriverDiagnostics = {
  IDEBusDriverDiagnosticsRunDiagnostics,
  "eng"
};

/**
  Runs diagnostics on a controller.

  @param  This A pointer to the EFI_DRIVER_DIAGNOSTICS_PROTOCOL
  instance.
  @param  ControllerHandle The handle of the controller to run diagnostics on.
  @param  ChildHandle The handle of the child controller to run diagnostics on
  This is an optional parameter that may be NULL.  It will
  be NULL for device drivers.  It will also be NULL for a
  bus drivers that wish to run diagnostics on the bus
  controller.  It will not be NULL for a bus driver that
  wishes to run diagnostics on one of its child
  controllers.
  @param  DiagnosticType Indicates type of diagnostics to perform on the
  controller specified by ControllerHandle and ChildHandle.
  See "Related Definitions" for the list of supported
  types.
  @param  Language A pointer to a three character ISO 639-2 language
  identifier.  This is the language in which the optional
  error message should be returned in Buffer, and it must
  match one of the languages specified in
  SupportedLanguages. The number of languages supported by
  a driver is up to the driver writer.
  @param  ErrorType A GUID that defines the format of the data returned in
  Buffer.
  @param  BufferSize The size, in bytes, of the data returned in Buffer.
  @param  Buffer A buffer that contains a Null-terminated Unicode string
  plus some additional data whose format is defined by
  ErrorType.  Buffer is allocated by this function with
  AllocatePool(), and it is the caller's responsibility
  to free it with a call to FreePool().

  @retval  EFI_SUCCESS The controller specified by ControllerHandle and
  ChildHandle passed the diagnostic.
  @retval  EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE.
  @retval  EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
  EFI_HANDLE.
  @retval  EFI_INVALID_PARAMETER Language is NULL.
  @retval  EFI_INVALID_PARAMETER ErrorType is NULL.
  @retval  EFI_INVALID_PARAMETER BufferType is NULL.
  @retval  EFI_INVALID_PARAMETER Buffer is NULL.
  @retval  EFI_UNSUPPORTED The driver specified by This does not support
  running diagnostics for the controller specified
  by ControllerHandle and ChildHandle.
  @retval  EFI_UNSUPPORTED The driver specified by This does not support the
  type of diagnostic specified by DiagnosticType.
  @retval  EFI_UNSUPPORTED The driver specified by This does not support the
  language specified by Language.
  @retval  EFI_OUT_OF_RESOURCES There are not enough resources available to complete
  the diagnostics.
  @retval  EFI_OUT_OF_RESOURCES There are not enough resources available to return
  the status information in ErrorType, BufferSize,
  and Buffer.
  @retval  EFI_DEVICE_ERROR The controller specified by ControllerHandle and
  ChildHandle did not pass the diagnostic.

**/
EFI_STATUS
IDEBusDriverDiagnosticsRunDiagnostics (
  IN  EFI_DRIVER_DIAGNOSTICS_PROTOCOL               *This,
  IN  EFI_HANDLE                                    ControllerHandle,
  IN  EFI_HANDLE                                    ChildHandle  OPTIONAL,
  IN  EFI_DRIVER_DIAGNOSTIC_TYPE                    DiagnosticType,
  IN  CHAR8                                         *Language,
  OUT EFI_GUID                                      **ErrorType,
  OUT UINTN                                         *BufferSize,
  OUT CHAR16                                        **Buffer
  )
{
  EFI_STATUS            Status;
  EFI_PCI_IO_PROTOCOL   *PciIo;
  EFI_BLOCK_IO_PROTOCOL *BlkIo;
  IDE_BLK_IO_DEV        *IdeBlkIoDevice;
  UINT32                VendorDeviceId;
  VOID                  *BlockBuffer;

  *ErrorType  = NULL;
  *BufferSize = 0;

  if (ChildHandle == NULL) {
    Status = gBS->OpenProtocol (
                    ControllerHandle,
                    &gEfiCallerIdGuid,
                    NULL,
                    gIDEBusDriverBinding.DriverBindingHandle,
                    ControllerHandle,
                    EFI_OPEN_PROTOCOL_TEST_PROTOCOL
                    );
    if (EFI_ERROR (Status)) {
      return EFI_UNSUPPORTED;
    }

    Status = gBS->OpenProtocol (
                    ControllerHandle,
                    &gEfiPciIoProtocolGuid,
                    (VOID **) &PciIo,
                    gIDEBusDriverBinding.DriverBindingHandle,
                    ControllerHandle,
                    EFI_OPEN_PROTOCOL_GET_PROTOCOL
                    );
    if (EFI_ERROR (Status)) {
      return EFI_DEVICE_ERROR;
    }

    //
    // Use services of PCI I/O Protocol to test the PCI IDE/ATAPI Controller
    // The following test simply reads the Device ID and Vendor ID.
    // It should never fail.  A real test would perform more advanced
    // diagnostics.
    //

    Status = PciIo->Pci.Read (PciIo, EfiPciIoWidthUint32, 0, 1, &VendorDeviceId);
    if (EFI_ERROR (Status) || VendorDeviceId == 0xffffffff) {
      return EFI_DEVICE_ERROR;
    }

    return EFI_SUCCESS;
  }

  Status = gBS->OpenProtocol (
                  ChildHandle,
                  &gEfiBlockIoProtocolGuid,
                  (VOID **) &BlkIo,
                  gIDEBusDriverBinding.DriverBindingHandle,
                  ChildHandle,
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
                  );
  if (EFI_ERROR (Status)) {
    return EFI_UNSUPPORTED;
  }

  IdeBlkIoDevice = IDE_BLOCK_IO_DEV_FROM_THIS (BlkIo);

  //
  // Use services available from IdeBlkIoDevice to test the IDE/ATAPI device
  //
  Status = gBS->AllocatePool (
                  EfiBootServicesData,
                  IdeBlkIoDevice->BlkMedia.BlockSize,
                  (VOID **) &BlockBuffer
                  );
  if (EFI_ERROR (Status)) {
    return Status;
  }

  Status = IdeBlkIoDevice->BlkIo.ReadBlocks (
                                  &IdeBlkIoDevice->BlkIo,
                                  IdeBlkIoDevice->BlkMedia.MediaId,
                                  0,
                                  IdeBlkIoDevice->BlkMedia.BlockSize,
                                  BlockBuffer
                                  );

  if (EFI_ERROR (Status)) {
    *ErrorType  = &gEfiCallerIdGuid;
    *BufferSize = sizeof (IDE_BUS_DIAGNOSTIC_ERROR);

    Status = gBS->AllocatePool (
                    EfiBootServicesData,
                    (UINTN) (*BufferSize),
                    (VOID **) Buffer
                    );
    if (EFI_ERROR (Status)) {
      return Status;
    }

    CopyMem (*Buffer, IDE_BUS_DIAGNOSTIC_ERROR, *BufferSize);

    Status = EFI_DEVICE_ERROR;
  }

  gBS->FreePool (BlockBuffer);

  return Status;
}