Unix version of EFI emulator

[mirror_edk2.git] / EdkUnixPkg / Dxe / UnixThunk / Bus / BlockIo / DriverDiagnostics.c

/*++\r
\r
Copyright (c) 2004 - 2005, Intel Corporation                                                         \r
All rights reserved. This program and the accompanying materials                          \r
are licensed and made available under the terms and conditions of the BSD License         \r
which accompanies this distribution.  The full text of the license may be found at        \r
http://opensource.org/licenses/bsd-license.php                                            \r
                                                                                          \r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     \r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             \r
\r
Module Name:\r
\r
  DriverDiagnostics.c\r
\r
Abstract:\r
\r
--*/\r
\r
#include "UnixBlockIo.h"\r
\r
//\r
// EFI Driver Diagnostics Functions\r
//\r
EFI_STATUS\r
EFIAPI\r
UnixBlockIoDriverDiagnosticsRunDiagnostics (\r
  IN  EFI_DRIVER_DIAGNOSTICS_PROTOCOL               *This,\r
  IN  EFI_HANDLE                                    ControllerHandle,\r
  IN  EFI_HANDLE                                    ChildHandle  OPTIONAL,\r
  IN  EFI_DRIVER_DIAGNOSTIC_TYPE                    DiagnosticType,\r
  IN  CHAR8                                         *Language,\r
  OUT EFI_GUID                                      **ErrorType,\r
  OUT UINTN                                         *BufferSize,\r
  OUT CHAR16                                        **Buffer\r
  );\r
\r
//\r
// EFI Driver Diagnostics Protocol\r
//\r
EFI_DRIVER_DIAGNOSTICS_PROTOCOL gUnixBlockIoDriverDiagnostics = {\r
  UnixBlockIoDriverDiagnosticsRunDiagnostics,\r
  LANGUAGESUPPORTED\r
};\r
\r
EFI_STATUS\r
EFIAPI\r
UnixBlockIoDriverDiagnosticsRunDiagnostics (\r
  IN  EFI_DRIVER_DIAGNOSTICS_PROTOCOL               *This,\r
  IN  EFI_HANDLE                                    ControllerHandle,\r
  IN  EFI_HANDLE                                    ChildHandle  OPTIONAL,\r
  IN  EFI_DRIVER_DIAGNOSTIC_TYPE                    DiagnosticType,\r
  IN  CHAR8                                         *Language,\r
  OUT EFI_GUID                                      **ErrorType,\r
  OUT UINTN                                         *BufferSize,\r
  OUT CHAR16                                        **Buffer\r
  )\r
/*++\r
\r
  Routine Description:\r
    Runs diagnostics on a controller.\r
\r
  Arguments:\r
    This             - A pointer to the EFI_DRIVER_DIAGNOSTICS_PROTOCOL instance.\r
    ControllerHandle - The handle of the controller to run diagnostics on.\r
    ChildHandle      - The handle of the child controller to run diagnostics on  \r
                       This is an optional parameter that may be NULL.  It will \r
                       be NULL for device drivers.  It will also be NULL for a \r
                       bus drivers that wish to run diagnostics on the bus \r
                       controller.  It will not be NULL for a bus driver that \r
                       wishes to run diagnostics on one of its child controllers.\r
    DiagnosticType   - Indicates type of diagnostics to perform on the controller \r
                       specified by ControllerHandle and ChildHandle.   See \r
                       "Related Definitions" for the list of supported types.\r
    Language         - A pointer to a three character ISO 639-2 language \r
                       identifier.  This is the language in which the optional \r
                       error message should be returned in Buffer, and it must \r
                       match one of the languages specified in SupportedLanguages.\r
                       The number of languages supported by a driver is up to \r
                       the driver writer.  \r
    ErrorType        - A GUID that defines the format of the data returned in \r
                       Buffer.  \r
    BufferSize       - The size, in bytes, of the data returned in Buffer.  \r
    Buffer           - A buffer that contains a Null-terminated Unicode string \r
                       plus some additional data whose format is defined by \r
                       ErrorType.  Buffer is allocated by this function with \r
                       AllocatePool(), and it is the caller's responsibility \r
                       to free it with a call to FreePool().  \r
\r
  Returns:\r
    EFI_SUCCESS           - The controller specified by ControllerHandle and \r
                            ChildHandle passed the diagnostic.\r
    EFI_INVALID_PARAMETER - ControllerHandle is not a valid EFI_HANDLE.\r
    EFI_INVALID_PARAMETER - ChildHandle is not NULL and it is not a valid \r
                            EFI_HANDLE.\r
    EFI_INVALID_PARAMETER - Language is NULL.\r
    EFI_INVALID_PARAMETER - ErrorType is NULL.\r
    EFI_INVALID_PARAMETER - BufferType is NULL.\r
    EFI_INVALID_PARAMETER - Buffer is NULL.\r
    EFI_UNSUPPORTED       - The driver specified by This does not support \r
                            running diagnostics for the controller specified \r
                            by ControllerHandle and ChildHandle.\r
    EFI_UNSUPPORTED       - The driver specified by This does not support the \r
                            type of diagnostic specified by DiagnosticType.\r
    EFI_UNSUPPORTED       - The driver specified by This does not support the \r
                            language specified by Language.\r
    EFI_OUT_OF_RESOURCES  - There are not enough resources available to complete\r
                            the diagnostics.\r
    EFI_OUT_OF_RESOURCES  - There are not enough resources available to return\r
                            the status information in ErrorType, BufferSize, \r
                            and Buffer.\r
    EFI_DEVICE_ERROR      - The controller specified by ControllerHandle and \r
                            ChildHandle did not pass the diagnostic.\r
\r
--*/\r
{\r
  EFI_STATUS            Status;\r
  EFI_BLOCK_IO_PROTOCOL *BlockIo;\r
  CHAR8                 *SupportedLanguage;\r
\r
  if (Language         == NULL ||\r
      ErrorType        == NULL ||\r
      Buffer           == NULL ||\r
      ControllerHandle == NULL ||\r
      BufferSize       == NULL) {\r
\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  SupportedLanguage = This->SupportedLanguages;\r
\r
  Status            = EFI_UNSUPPORTED;\r
  while (*SupportedLanguage != 0) {\r
    if (AsciiStrnCmp (Language, SupportedLanguage, 3)) {\r
      Status = EFI_SUCCESS;\r
      break;\r
    }\r
\r
    SupportedLanguage += 3;\r
  }\r
\r
  if (EFI_ERROR (Status)) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  *ErrorType  = NULL;\r
  *BufferSize = 0;\r
  if (DiagnosticType != EfiDriverDiagnosticTypeStandard) {\r
    *ErrorType  = &gEfiBlockIoProtocolGuid;\r
    *BufferSize = 0x60;\r
    gBS->AllocatePool (EfiBootServicesData, (UINTN) (*BufferSize),
		       (void *)Buffer);\r
    CopyMem (*Buffer, L"Unix Block I/O Driver Diagnostics Failed\n", *BufferSize);\r
    return EFI_DEVICE_ERROR;\r
  }\r
\r
  //\r
  // Validate controller handle\r
  //\r
  Status = gBS->OpenProtocol (\r
                  ControllerHandle,\r
                  &gEfiUnixIoProtocolGuid,\r
                  (void *)&BlockIo,\r
                  gUnixBlockIoDriverBinding.DriverBindingHandle,\r
                  ControllerHandle,\r
                  EFI_OPEN_PROTOCOL_BY_DRIVER\r
                  );\r
\r
  if (!EFI_ERROR (Status)) {\r
    gBS->CloseProtocol (\r
          ControllerHandle,\r
          &gEfiUnixIoProtocolGuid,\r
          gUnixBlockIoDriverBinding.DriverBindingHandle,\r
          ControllerHandle\r
          );\r
\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  if (Status == EFI_UNSUPPORTED) {\r
    return Status;\r
  } else if (Status != EFI_ALREADY_STARTED) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r