OvmfPkg/Virtio: take RingBaseShift in SetQueueAddress()

[mirror_edk2.git] / OvmfPkg / XenPvBlkDxe / ComponentName.c

/** @file\r
  Component Name functions implementation for XenPvBlk driver.\r
\r
  Copyright (C) 2014, Citrix Ltd.\r
\r
  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
**/\r
\r
#include "XenPvBlkDxe.h"\r
\r
///\r
/// Component Name Protocol instance\r
///\r
GLOBAL_REMOVE_IF_UNREFERENCED\r
EFI_COMPONENT_NAME_PROTOCOL  gXenPvBlkDxeComponentName = {\r
  (EFI_COMPONENT_NAME_GET_DRIVER_NAME)    XenPvBlkDxeComponentNameGetDriverName,\r
  (EFI_COMPONENT_NAME_GET_CONTROLLER_NAME)XenPvBlkDxeComponentNameGetControllerName,\r
  "eng"\r
};\r
\r
///\r
/// Component Name 2 Protocol instance\r
///\r
GLOBAL_REMOVE_IF_UNREFERENCED\r
EFI_COMPONENT_NAME2_PROTOCOL  gXenPvBlkDxeComponentName2 = {\r
  XenPvBlkDxeComponentNameGetDriverName,\r
  XenPvBlkDxeComponentNameGetControllerName,\r
  "en"\r
};\r
\r
///\r
/// Table of driver names\r
///\r
GLOBAL_REMOVE_IF_UNREFERENCED\r
EFI_UNICODE_STRING_TABLE mXenPvBlkDxeDriverNameTable[] = {\r
  { "eng;en", (CHAR16 *)L"Xen PV Block Driver" },\r
  { NULL, NULL }\r
};\r
\r
///\r
/// Table of controller names\r
///\r
GLOBAL_REMOVE_IF_UNREFERENCED\r
EFI_UNICODE_STRING_TABLE mXenPvBlkDxeControllerNameTable[] = {\r
  { "eng;en", (CHAR16 *)L"Xen PV Block Device" },\r
  { NULL, NULL }\r
};\r
\r
/**\r
  Retrieves a Unicode string that is the user-readable name of the EFI Driver.\r
\r
  @param  This       A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.\r
  @param  Language   A pointer to a three-character ISO 639-2 language identifier.\r
                     This is the language of the driver name that that the caller\r
                     is requesting, and it must match one of the languages specified\r
                     in SupportedLanguages.  The number of languages supported by a\r
                     driver is up to the driver writer.\r
  @param  DriverName A pointer to the Unicode string to return.  This Unicode string\r
                     is the name of the driver specified by This in the language\r
                     specified by Language.\r
\r
  @retval EFI_SUCCESS           The Unicode string for the Driver specified by This\r
                                and the language specified by Language was returned\r
                                in DriverName.\r
  @retval EFI_INVALID_PARAMETER Language is NULL.\r
  @retval EFI_INVALID_PARAMETER DriverName is NULL.\r
  @retval EFI_UNSUPPORTED       The driver specified by This does not support the\r
                                language specified by Language.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
XenPvBlkDxeComponentNameGetDriverName (\r
  IN EFI_COMPONENT_NAME2_PROTOCOL  *This,\r
  IN  CHAR8                        *Language,\r
  OUT CHAR16                       **DriverName\r
  )\r
{\r
  return LookupUnicodeString2 (\r
           Language,\r
           This->SupportedLanguages,\r
           mXenPvBlkDxeDriverNameTable,\r
           DriverName,\r
           (BOOLEAN)(This != &gXenPvBlkDxeComponentName2)\r
           );\r
}\r
\r
/**\r
  Retrieves a Unicode string that is the user readable name of the controller\r
  that is being managed by an EFI Driver.\r
\r
  @param  This             A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.\r
  @param  ControllerHandle The handle of a controller that the driver specified by\r
                           This is managing.  This handle specifies the controller\r
                           whose name is to be returned.\r
  @param  ChildHandle      The handle of the child controller to retrieve the name\r
                           of.  This is an optional parameter that may be NULL.  It\r
                           will be NULL for device drivers.  It will also be NULL\r
                           for a bus drivers that wish to retrieve the name of the\r
                           bus controller.  It will not be NULL for a bus driver\r
                           that wishes to retrieve the name of a child controller.\r
  @param  Language         A pointer to a three character ISO 639-2 language\r
                           identifier.  This is the language of the controller name\r
                           that the caller is requesting, and it must match one\r
                           of the languages specified in SupportedLanguages.  The\r
                           number of languages supported by a driver is up to the\r
                           driver writer.\r
  @param  ControllerName   A pointer to the Unicode string to return.  This Unicode\r
                           string is the name of the controller specified by\r
                           ControllerHandle and ChildHandle in the language specified\r
                           by Language, from the point of view of the driver specified\r
                           by This.\r
\r
  @retval EFI_SUCCESS           The Unicode string for the user-readable name in the\r
                                language specified by Language for the driver\r
                                specified by This was returned in DriverName.\r
  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.\r
  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid EFI_HANDLE.\r
  @retval EFI_INVALID_PARAMETER Language is NULL.\r
  @retval EFI_INVALID_PARAMETER ControllerName is NULL.\r
  @retval EFI_UNSUPPORTED       The driver specified by This is not currently managing\r
                                the controller specified by ControllerHandle and\r
                                ChildHandle.\r
  @retval EFI_UNSUPPORTED       The driver specified by This does not support the\r
                                language specified by Language.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
XenPvBlkDxeComponentNameGetControllerName (\r
  IN  EFI_COMPONENT_NAME2_PROTOCOL  *This,\r
  IN  EFI_HANDLE                    ControllerHandle,\r
  IN  EFI_HANDLE                    ChildHandle        OPTIONAL,\r
  IN  CHAR8                         *Language,\r
  OUT CHAR16                        **ControllerName\r
  )\r
{\r
  EFI_STATUS  Status;\r
\r
  //\r
  // ChildHandle must be NULL for a Device Driver\r
  //\r
  if (ChildHandle != NULL) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  //\r
  // Make sure this driver is currently managing ControllerHandle\r
  //\r
  Status = EfiTestManagedDevice (\r
             ControllerHandle,\r
             gXenPvBlkDxeDriverBinding.DriverBindingHandle,\r
             &gXenBusProtocolGuid\r
             );\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  //\r
  // Lookup name of controller specified by ControllerHandle\r
  //\r
  return LookupUnicodeString2 (\r
           Language,\r
           This->SupportedLanguages,\r
           mXenPvBlkDxeControllerNameTable,\r
           ControllerName,\r
           (BOOLEAN)(This != &gXenPvBlkDxeComponentName2)\r
           );\r
}\r