[mirror_edk2.git] / IntelFrameworkModulePkg / Library / GenericBdsLib / BdsConnect.c

/** @file\r
  BDS Lib functions which relate with connect the device\r
\r
Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>\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 "InternalBdsLib.h"\r
\r
\r
/**\r
  This function will connect all the system driver to controller\r
  first, and then special connect the default console, this make\r
  sure all the system controller available and the platform default\r
  console connected.\r
\r
**/\r
VOID\r
EFIAPI\r
BdsLibConnectAll (\r
  VOID\r
  )\r
{\r
  //\r
  // Connect the platform console first\r
  //\r
  BdsLibConnectAllDefaultConsoles ();\r
\r
  //\r
  // Generic way to connect all the drivers\r
  //\r
  BdsLibConnectAllDriversToAllControllers ();\r
\r
  //\r
  // Here we have the assumption that we have already had\r
  // platform default console\r
  //\r
  BdsLibConnectAllDefaultConsoles ();\r
}\r
\r
\r
/**\r
  This function will connect all the system drivers to all controllers\r
  first, and then connect all the console devices the system current\r
  have. After this we should get all the device work and console available\r
  if the system have console device.\r
\r
**/\r
VOID\r
BdsLibGenericConnectAll (\r
  VOID\r
  )\r
{\r
  //\r
  // Most generic way to connect all the drivers\r
  //\r
  BdsLibConnectAllDriversToAllControllers ();\r
  BdsLibConnectAllConsoles ();\r
}\r
\r
/**\r
  This function will create all handles associate with every device\r
  path node. If the handle associate with one device path node can not\r
  be created successfully, then still give chance to do the dispatch,\r
  which load the missing drivers if possible.\r
\r
  @param  DevicePathToConnect   The device path which will be connected, it can be\r
                                a multi-instance device path\r
\r
  @retval EFI_SUCCESS           All handles associate with every device path  node\r
                                have been created\r
  @retval EFI_OUT_OF_RESOURCES  There is no resource to create new handles\r
  @retval EFI_NOT_FOUND         Create the handle associate with one device  path\r
                                node failed\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibConnectDevicePath (\r
  IN EFI_DEVICE_PATH_PROTOCOL  *DevicePathToConnect\r
  )\r
{\r
  EFI_STATUS                Status;\r
  EFI_DEVICE_PATH_PROTOCOL  *DevicePath;\r
  EFI_DEVICE_PATH_PROTOCOL  *CopyOfDevicePath;\r
  EFI_DEVICE_PATH_PROTOCOL  *Instance;\r
  EFI_DEVICE_PATH_PROTOCOL  *RemainingDevicePath;\r
  EFI_DEVICE_PATH_PROTOCOL  *Next;\r
  EFI_HANDLE                Handle;\r
  EFI_HANDLE                PreviousHandle;\r
  UINTN                     Size;\r
  EFI_TPL                   CurrentTpl;\r
\r
  if (DevicePathToConnect == NULL) {\r
    return EFI_SUCCESS;\r
  }\r
\r
  CurrentTpl  = EfiGetCurrentTpl ();\r
\r
  DevicePath        = DuplicateDevicePath (DevicePathToConnect);\r
  if (DevicePath == NULL) {\r
    return EFI_OUT_OF_RESOURCES;\r
  }\r
  CopyOfDevicePath  = DevicePath;\r
\r
  do {\r
    //\r
    // The outer loop handles multi instance device paths.\r
    // Only console variables contain multiple instance device paths.\r
    //\r
    // After this call DevicePath points to the next Instance\r
    //\r
    Instance  = GetNextDevicePathInstance (&DevicePath, &Size);\r
    if (Instance == NULL) {\r
      FreePool (CopyOfDevicePath);\r
      return EFI_OUT_OF_RESOURCES;\r
    }\r
\r
    Next      = Instance;\r
    while (!IsDevicePathEndType (Next)) {\r
      Next = NextDevicePathNode (Next);\r
    }\r
\r
    SetDevicePathEndNode (Next);\r
\r
    //\r
    // Start the real work of connect with RemainingDevicePath\r
    //\r
    PreviousHandle = NULL;\r
    do {\r
      //\r
      // Find the handle that best matches the Device Path. If it is only a\r
      // partial match the remaining part of the device path is returned in\r
      // RemainingDevicePath.\r
      //\r
      RemainingDevicePath = Instance;\r
      Status              = gBS->LocateDevicePath (&gEfiDevicePathProtocolGuid, &RemainingDevicePath, &Handle);\r
\r
      if (!EFI_ERROR (Status)) {\r
        if (Handle == PreviousHandle) {\r
          //\r
          // If no forward progress is made try invoking the Dispatcher.\r
          // A new FV may have been added to the system an new drivers\r
          // may now be found.\r
          // Status == EFI_SUCCESS means a driver was dispatched\r
          // Status == EFI_NOT_FOUND means no new drivers were dispatched\r
          //\r
          if (CurrentTpl == TPL_APPLICATION) {\r
            //\r
            // Dispatch calls LoadImage/StartImage which cannot run at TPL > TPL_APPLICATION\r
            //\r
            Status = gDS->Dispatch ();\r
          } else {\r
            //\r
            // Always return EFI_NOT_FOUND here\r
            // to prevent dead loop when control handle is found but connection failded case\r
            //\r
            Status = EFI_NOT_FOUND;\r
          }\r
        }\r
\r
        if (!EFI_ERROR (Status)) {\r
          PreviousHandle = Handle;\r
          //\r
          // Connect all drivers that apply to Handle and RemainingDevicePath,\r
          // the Recursive flag is FALSE so only one level will be expanded.\r
          //\r
          // Do not check the connect status here, if the connect controller fail,\r
          // then still give the chance to do dispatch, because partial\r
          // RemainingDevicepath may be in the new FV\r
          //\r
          // 1. If the connect fail, RemainingDevicepath and handle will not\r
          //    change, so next time will do the dispatch, then dispatch's status\r
          //    will take effect\r
          // 2. If the connect success, the RemainingDevicepath and handle will\r
          //    change, then avoid the dispatch, we have chance to continue the\r
          //    next connection\r
          //\r
          gBS->ConnectController (Handle, NULL, RemainingDevicePath, FALSE);\r
        }\r
      }\r
      //\r
      // Loop until RemainingDevicePath is an empty device path\r
      //\r
    } while (!EFI_ERROR (Status) && !IsDevicePathEnd (RemainingDevicePath));\r
\r
  } while (DevicePath != NULL);\r
\r
  if (CopyOfDevicePath != NULL) {\r
    FreePool (CopyOfDevicePath);\r
  }\r
  //\r
  // All handle with DevicePath exists in the handle database\r
  //\r
  return Status;\r
}\r
\r
/**\r
  This function will connect all current system handles recursively.\r
\r
  gBS->ConnectController() service is invoked for each handle exist in system handler buffer.\r
  If the handle is bus type handler, all childrens also will be connected recursively\r
  by gBS->ConnectController().\r
\r
  @retval EFI_SUCCESS           All handles and it's child handle have been connected\r
  @retval EFI_STATUS            Error status returned by of gBS->LocateHandleBuffer().\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibConnectAllEfi (\r
  VOID\r
  )\r
{\r
  EFI_STATUS  Status;\r
  UINTN       HandleCount;\r
  EFI_HANDLE  *HandleBuffer;\r
  UINTN       Index;\r
\r
  Status = gBS->LocateHandleBuffer (\r
                  AllHandles,\r
                  NULL,\r
                  NULL,\r
                  &HandleCount,\r
                  &HandleBuffer\r
                  );\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  for (Index = 0; Index < HandleCount; Index++) {\r
    Status = gBS->ConnectController (HandleBuffer[Index], NULL, NULL, TRUE);\r
  }\r
\r
  if (HandleBuffer != NULL) {\r
    FreePool (HandleBuffer);\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  This function will disconnect all current system handles.\r
\r
  gBS->DisconnectController() is invoked for each handle exists in system handle buffer.\r
  If handle is a bus type handle, all childrens also are disconnected recursively by\r
  gBS->DisconnectController().\r
\r
  @retval EFI_SUCCESS           All handles have been disconnected\r
  @retval EFI_STATUS            Error status returned by of gBS->LocateHandleBuffer().\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibDisconnectAllEfi (\r
  VOID\r
  )\r
{\r
  EFI_STATUS  Status;\r
  UINTN       HandleCount;\r
  EFI_HANDLE  *HandleBuffer;\r
  UINTN       Index;\r
\r
  //\r
  // Disconnect all\r
  //\r
  Status = gBS->LocateHandleBuffer (\r
                  AllHandles,\r
                  NULL,\r
                  NULL,\r
                  &HandleCount,\r
                  &HandleBuffer\r
                  );\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  for (Index = 0; Index < HandleCount; Index++) {\r
    Status = gBS->DisconnectController (HandleBuffer[Index], NULL, NULL);\r
  }\r
\r
  if (HandleBuffer != NULL) {\r
    FreePool (HandleBuffer);\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r
\r
\r
/**\r
  Connects all drivers to all controllers.\r
  This function make sure all the current system driver will manage\r
  the correspoinding controllers if have. And at the same time, make\r
  sure all the system controllers have driver to manage it if have.\r
\r
**/\r
VOID\r
EFIAPI\r
BdsLibConnectAllDriversToAllControllers (\r
  VOID\r
  )\r
{\r
  EFI_STATUS  Status;\r
\r
  do {\r
    //\r
    // Connect All EFI 1.10 drivers following EFI 1.10 algorithm\r
    //\r
    BdsLibConnectAllEfi ();\r
\r
    //\r
    // Check to see if it's possible to dispatch an more DXE drivers.\r
    // The BdsLibConnectAllEfi () may have made new DXE drivers show up.\r
    // If anything is Dispatched Status == EFI_SUCCESS and we will try\r
    // the connect again.\r
    //\r
    Status = gDS->Dispatch ();\r
\r
  } while (!EFI_ERROR (Status));\r
\r
}\r
\r
\r
/**\r
  Connect the specific Usb device which match the short form device path,\r
  and whose bus is determined by Host Controller (Uhci or Ehci).\r
\r
  @param  HostControllerPI      Uhci (0x00) or Ehci (0x20) or Both uhci and ehci\r
                                (0xFF)\r
  @param  RemainingDevicePath   a short-form device path that starts with the first\r
                                element  being a USB WWID or a USB Class device\r
                                path\r
\r
  @return EFI_INVALID_PARAMETER  RemainingDevicePath is NULL pointer.\r
                                 RemainingDevicePath is not a USB device path.\r
                                 Invalid HostControllerPI type.\r
  @return EFI_SUCCESS            Success to connect USB device\r
  @return EFI_NOT_FOUND          Fail to find handle for USB controller to connect.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibConnectUsbDevByShortFormDP(\r
  IN UINT8                      HostControllerPI,\r
  IN EFI_DEVICE_PATH_PROTOCOL   *RemainingDevicePath\r
  )\r
{\r
  EFI_STATUS                            Status;\r
  EFI_HANDLE                            *HandleArray;\r
  UINTN                                 HandleArrayCount;\r
  UINTN                                 Index;\r
  EFI_PCI_IO_PROTOCOL                   *PciIo;\r
  UINT8                                 Class[3];\r
  BOOLEAN                               AtLeastOneConnected;\r
\r
  //\r
  // Check the passed in parameters\r
  //\r
  if (RemainingDevicePath == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  if ((DevicePathType (RemainingDevicePath) != MESSAGING_DEVICE_PATH) ||\r
      ((DevicePathSubType (RemainingDevicePath) != MSG_USB_CLASS_DP)\r
      && (DevicePathSubType (RemainingDevicePath) != MSG_USB_WWID_DP)\r
      )) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  if (HostControllerPI != 0xFF &&\r
      HostControllerPI != 0x00 &&\r
      HostControllerPI != 0x20) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  //\r
  // Find the usb host controller firstly, then connect with the remaining device path\r
  //\r
  AtLeastOneConnected = FALSE;\r
  Status = gBS->LocateHandleBuffer (\r
                  ByProtocol,\r
                  &gEfiPciIoProtocolGuid,\r
                  NULL,\r
                  &HandleArrayCount,\r
                  &HandleArray\r
                  );\r
  if (!EFI_ERROR (Status)) {\r
    for (Index = 0; Index < HandleArrayCount; Index++) {\r
      Status = gBS->HandleProtocol (\r
                      HandleArray[Index],\r
                      &gEfiPciIoProtocolGuid,\r
                      (VOID **)&PciIo\r
                      );\r
      if (!EFI_ERROR (Status)) {\r
        //\r
        // Check whether the Pci device is the wanted usb host controller\r
        //\r
        Status = PciIo->Pci.Read (PciIo, EfiPciIoWidthUint8, 0x09, 3, &Class);\r
        if (!EFI_ERROR (Status)) {\r
          if ((PCI_CLASS_SERIAL == Class[2]) &&\r
              (PCI_CLASS_SERIAL_USB == Class[1])) {\r
            if (HostControllerPI == Class[0] || HostControllerPI == 0xFF) {\r
              Status = gBS->ConnectController (\r
                              HandleArray[Index],\r
                              NULL,\r
                              RemainingDevicePath,\r
                              FALSE\r
                              );\r
              if (!EFI_ERROR(Status)) {\r
                AtLeastOneConnected = TRUE;\r
              }\r
            }\r
          }\r
        }\r
      }\r
    }\r
\r
    if (HandleArray != NULL) {\r
      FreePool (HandleArray);\r
    }\r
\r
    if (AtLeastOneConnected) {\r
      return EFI_SUCCESS;\r
    }\r
  }\r
\r
  return EFI_NOT_FOUND;\r
}\r
Commit	Line	Data
5c08e117	1	/** @file\r
	2	BDS Lib functions which relate with connect the device\r
	3	\r
0a6f4824	4	Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>\r
180a5a35	5	This program and the accompanying materials\r
5c08e117	6	are licensed and made available under the terms and conditions of the BSD License\r
	7	which accompanies this distribution. The full text of the license may be found at\r
	8	http://opensource.org/licenses/bsd-license.php\r
	9	\r
	10	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	11	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	12	\r
	13	**/\r
	14	\r
	15	#include "InternalBdsLib.h"\r
	16	\r
	17	\r
	18	/**\r
	19	This function will connect all the system driver to controller\r
	20	first, and then special connect the default console, this make\r
	21	sure all the system controller available and the platform default\r
	22	console connected.\r
	23	\r
	24	**/\r
	25	VOID\r
	26	EFIAPI\r
	27	BdsLibConnectAll (\r
	28	VOID\r
	29	)\r
	30	{\r
	31	//\r
	32	// Connect the platform console first\r
	33	//\r
	34	BdsLibConnectAllDefaultConsoles ();\r
	35	\r
	36	//\r
	37	// Generic way to connect all the drivers\r
	38	//\r
	39	BdsLibConnectAllDriversToAllControllers ();\r
	40	\r
	41	//\r
	42	// Here we have the assumption that we have already had\r
	43	// platform default console\r
	44	//\r
	45	BdsLibConnectAllDefaultConsoles ();\r
	46	}\r
	47	\r
	48	\r
	49	/**\r
	50	This function will connect all the system drivers to all controllers\r
	51	first, and then connect all the console devices the system current\r
	52	have. After this we should get all the device work and console available\r
	53	if the system have console device.\r
	54	\r
	55	**/\r
	56	VOID\r
	57	BdsLibGenericConnectAll (\r
	58	VOID\r
	59	)\r
	60	{\r
	61	//\r
	62	// Most generic way to connect all the drivers\r
	63	//\r
	64	BdsLibConnectAllDriversToAllControllers ();\r
	65	BdsLibConnectAllConsoles ();\r
	66	}\r
	67	\r
5c08e117	68	/**\r
	69	This function will create all handles associate with every device\r
	70	path node. If the handle associate with one device path node can not\r
37406c34 RN	71	be created successfully, then still give chance to do the dispatch,\r
37406c34 RN	72	which load the missing drivers if possible.\r
5c08e117	73	\r
	74	@param DevicePathToConnect The device path which will be connected, it can be\r
	75	a multi-instance device path\r
	76	\r
	77	@retval EFI_SUCCESS All handles associate with every device path node\r
	78	have been created\r
	79	@retval EFI_OUT_OF_RESOURCES There is no resource to create new handles\r
	80	@retval EFI_NOT_FOUND Create the handle associate with one device path\r
	81	node failed\r
	82	\r
	83	**/\r
	84	EFI_STATUS\r
37406c34 RN	85	EFIAPI\r
	86	BdsLibConnectDevicePath (\r
	87	IN EFI_DEVICE_PATH_PROTOCOL *DevicePathToConnect\r
5c08e117	88	)\r
	89	{\r
	90	EFI_STATUS Status;\r
	91	EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
	92	EFI_DEVICE_PATH_PROTOCOL *CopyOfDevicePath;\r
	93	EFI_DEVICE_PATH_PROTOCOL *Instance;\r
	94	EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath;\r
	95	EFI_DEVICE_PATH_PROTOCOL *Next;\r
	96	EFI_HANDLE Handle;\r
	97	EFI_HANDLE PreviousHandle;\r
	98	UINTN Size;\r
37406c34	99	EFI_TPL CurrentTpl;\r
5c08e117	100	\r
	101	if (DevicePathToConnect == NULL) {\r
	102	return EFI_SUCCESS;\r
	103	}\r
	104	\r
37406c34 RN	105	CurrentTpl = EfiGetCurrentTpl ();\r
37406c34 RN	106	\r
5c08e117	107	DevicePath = DuplicateDevicePath (DevicePathToConnect);\r
	108	if (DevicePath == NULL) {\r
	109	return EFI_OUT_OF_RESOURCES;\r
	110	}\r
	111	CopyOfDevicePath = DevicePath;\r
0a6f4824	112	\r
5c08e117	113	do {\r
	114	//\r
	115	// The outer loop handles multi instance device paths.\r
	116	// Only console variables contain multiple instance device paths.\r
	117	//\r
	118	// After this call DevicePath points to the next Instance\r
	119	//\r
	120	Instance = GetNextDevicePathInstance (&DevicePath, &Size);\r
	121	if (Instance == NULL) {\r
	122	FreePool (CopyOfDevicePath);\r
	123	return EFI_OUT_OF_RESOURCES;\r
	124	}\r
0a6f4824	125	\r
5c08e117	126	Next = Instance;\r
	127	while (!IsDevicePathEndType (Next)) {\r
	128	Next = NextDevicePathNode (Next);\r
	129	}\r
	130	\r
	131	SetDevicePathEndNode (Next);\r
	132	\r
	133	//\r
	134	// Start the real work of connect with RemainingDevicePath\r
	135	//\r
	136	PreviousHandle = NULL;\r
	137	do {\r
	138	//\r
	139	// Find the handle that best matches the Device Path. If it is only a\r
	140	// partial match the remaining part of the device path is returned in\r
	141	// RemainingDevicePath.\r
	142	//\r
	143	RemainingDevicePath = Instance;\r
	144	Status = gBS->LocateDevicePath (&gEfiDevicePathProtocolGuid, &RemainingDevicePath, &Handle);\r
	145	\r
	146	if (!EFI_ERROR (Status)) {\r
	147	if (Handle == PreviousHandle) {\r
	148	//\r
	149	// If no forward progress is made try invoking the Dispatcher.\r
	150	// A new FV may have been added to the system an new drivers\r
	151	// may now be found.\r
	152	// Status == EFI_SUCCESS means a driver was dispatched\r
	153	// Status == EFI_NOT_FOUND means no new drivers were dispatched\r
	154	//\r
37406c34 RN	155	if (CurrentTpl == TPL_APPLICATION) {\r
	156	//\r
	157	// Dispatch calls LoadImage/StartImage which cannot run at TPL > TPL_APPLICATION\r
	158	//\r
bc79c731	159	Status = gDS->Dispatch ();\r
	160	} else {\r
	161	//\r
	162	// Always return EFI_NOT_FOUND here\r
	163	// to prevent dead loop when control handle is found but connection failded case\r
	164	//\r
	165	Status = EFI_NOT_FOUND;\r
	166	}\r
5c08e117	167	}\r
	168	\r
	169	if (!EFI_ERROR (Status)) {\r
	170	PreviousHandle = Handle;\r
	171	//\r
	172	// Connect all drivers that apply to Handle and RemainingDevicePath,\r
	173	// the Recursive flag is FALSE so only one level will be expanded.\r
	174	//\r
	175	// Do not check the connect status here, if the connect controller fail,\r
	176	// then still give the chance to do dispatch, because partial\r
	177	// RemainingDevicepath may be in the new FV\r
	178	//\r
	179	// 1. If the connect fail, RemainingDevicepath and handle will not\r
	180	// change, so next time will do the dispatch, then dispatch's status\r
	181	// will take effect\r
	182	// 2. If the connect success, the RemainingDevicepath and handle will\r
	183	// change, then avoid the dispatch, we have chance to continue the\r
	184	// next connection\r
	185	//\r
	186	gBS->ConnectController (Handle, NULL, RemainingDevicePath, FALSE);\r
	187	}\r
	188	}\r
	189	//\r
	190	// Loop until RemainingDevicePath is an empty device path\r
	191	//\r
	192	} while (!EFI_ERROR (Status) && !IsDevicePathEnd (RemainingDevicePath));\r
	193	\r
	194	} while (DevicePath != NULL);\r
	195	\r
	196	if (CopyOfDevicePath != NULL) {\r
	197	FreePool (CopyOfDevicePath);\r
	198	}\r
	199	//\r
	200	// All handle with DevicePath exists in the handle database\r
	201	//\r
	202	return Status;\r
	203	}\r
	204	\r
5c08e117	205	/**\r
0a6f4824 LG	206	This function will connect all current system handles recursively.\r
0a6f4824 LG	207	\r
0977c9b2	208	gBS->ConnectController() service is invoked for each handle exist in system handler buffer.\r
	209	If the handle is bus type handler, all childrens also will be connected recursively\r
	210	by gBS->ConnectController().\r
5c08e117	211	\r
0977c9b2	212	@retval EFI_SUCCESS All handles and it's child handle have been connected\r
0977c9b2	213	@retval EFI_STATUS Error status returned by of gBS->LocateHandleBuffer().\r
5c08e117	214	\r
	215	**/\r
	216	EFI_STATUS\r
	217	EFIAPI\r
	218	BdsLibConnectAllEfi (\r
	219	VOID\r
	220	)\r
	221	{\r
	222	EFI_STATUS Status;\r
	223	UINTN HandleCount;\r
	224	EFI_HANDLE *HandleBuffer;\r
	225	UINTN Index;\r
	226	\r
	227	Status = gBS->LocateHandleBuffer (\r
	228	AllHandles,\r
	229	NULL,\r
	230	NULL,\r
	231	&HandleCount,\r
	232	&HandleBuffer\r
	233	);\r
	234	if (EFI_ERROR (Status)) {\r
	235	return Status;\r
	236	}\r
	237	\r
	238	for (Index = 0; Index < HandleCount; Index++) {\r
	239	Status = gBS->ConnectController (HandleBuffer[Index], NULL, NULL, TRUE);\r
	240	}\r
	241	\r
	242	if (HandleBuffer != NULL) {\r
	243	FreePool (HandleBuffer);\r
	244	}\r
	245	\r
	246	return EFI_SUCCESS;\r
	247	}\r
	248	\r
5c08e117	249	/**\r
0a6f4824 LG	250	This function will disconnect all current system handles.\r
0a6f4824 LG	251	\r
0977c9b2	252	gBS->DisconnectController() is invoked for each handle exists in system handle buffer.\r
	253	If handle is a bus type handle, all childrens also are disconnected recursively by\r
	254	gBS->DisconnectController().\r
5c08e117	255	\r
5c08e117	256	@retval EFI_SUCCESS All handles have been disconnected\r
0977c9b2	257	@retval EFI_STATUS Error status returned by of gBS->LocateHandleBuffer().\r
5c08e117	258	\r
	259	**/\r
	260	EFI_STATUS\r
	261	EFIAPI\r
	262	BdsLibDisconnectAllEfi (\r
	263	VOID\r
	264	)\r
	265	{\r
	266	EFI_STATUS Status;\r
	267	UINTN HandleCount;\r
	268	EFI_HANDLE *HandleBuffer;\r
	269	UINTN Index;\r
	270	\r
	271	//\r
	272	// Disconnect all\r
	273	//\r
	274	Status = gBS->LocateHandleBuffer (\r
	275	AllHandles,\r
	276	NULL,\r
	277	NULL,\r
	278	&HandleCount,\r
	279	&HandleBuffer\r
	280	);\r
	281	if (EFI_ERROR (Status)) {\r
	282	return Status;\r
	283	}\r
	284	\r
	285	for (Index = 0; Index < HandleCount; Index++) {\r
	286	Status = gBS->DisconnectController (HandleBuffer[Index], NULL, NULL);\r
	287	}\r
	288	\r
	289	if (HandleBuffer != NULL) {\r
	290	FreePool (HandleBuffer);\r
	291	}\r
	292	\r
	293	return EFI_SUCCESS;\r
	294	}\r
	295	\r
	296	\r
	297	/**\r
	298	Connects all drivers to all controllers.\r
	299	This function make sure all the current system driver will manage\r
	300	the correspoinding controllers if have. And at the same time, make\r
	301	sure all the system controllers have driver to manage it if have.\r
	302	\r
	303	**/\r
	304	VOID\r
	305	EFIAPI\r
	306	BdsLibConnectAllDriversToAllControllers (\r
	307	VOID\r
	308	)\r
	309	{\r
	310	EFI_STATUS Status;\r
	311	\r
	312	do {\r
	313	//\r
	314	// Connect All EFI 1.10 drivers following EFI 1.10 algorithm\r
	315	//\r
	316	BdsLibConnectAllEfi ();\r
	317	\r
	318	//\r
	319	// Check to see if it's possible to dispatch an more DXE drivers.\r
	320	// The BdsLibConnectAllEfi () may have made new DXE drivers show up.\r
	321	// If anything is Dispatched Status == EFI_SUCCESS and we will try\r
322	// the connect again.\r
323	//\r
324	Status = gDS->Dispatch ();\r
325	\r
326	} while (!EFI_ERROR (Status));\r
327	\r
328	}\r
329	\r
330	\r
331	/**\r
332	Connect the specific Usb device which match the short form device path,\r
333	and whose bus is determined by Host Controller (Uhci or Ehci).\r
334	\r
335	@param HostControllerPI Uhci (0x00) or Ehci (0x20) or Both uhci and ehci\r
336	(0xFF)\r
337	@param RemainingDevicePath a short-form device path that starts with the first\r
338	element being a USB WWID or a USB Class device\r
339	path\r
340	\r
341	@return EFI_INVALID_PARAMETER RemainingDevicePath is NULL pointer.\r
342	RemainingDevicePath is not a USB device path.\r
343	Invalid HostControllerPI type.\r
344	@return EFI_SUCCESS Success to connect USB device\r
345	@return EFI_NOT_FOUND Fail to find handle for USB controller to connect.\r
346	\r
347	**/\r
348	EFI_STATUS\r
349	EFIAPI\r
350	BdsLibConnectUsbDevByShortFormDP(\r
351	IN UINT8 HostControllerPI,\r
352	IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
353	)\r
354	{\r
355	EFI_STATUS Status;\r
356	EFI_HANDLE *HandleArray;\r
357	UINTN HandleArrayCount;\r
358	UINTN Index;\r
359	EFI_PCI_IO_PROTOCOL *PciIo;\r
360	UINT8 Class[3];\r
361	BOOLEAN AtLeastOneConnected;\r
362	\r
363	//\r
364	// Check the passed in parameters\r
365	//\r
366	if (RemainingDevicePath == NULL) {\r
367	return EFI_INVALID_PARAMETER;\r
368	}\r
369	\r
370	if ((DevicePathType (RemainingDevicePath) != MESSAGING_DEVICE_PATH) \|\|\r
371	((DevicePathSubType (RemainingDevicePath) != MSG_USB_CLASS_DP)\r
372	&& (DevicePathSubType (RemainingDevicePath) != MSG_USB_WWID_DP)\r
373	)) {\r
374	return EFI_INVALID_PARAMETER;\r
375	}\r
376	\r
377	if (HostControllerPI != 0xFF &&\r
378	HostControllerPI != 0x00 &&\r
379	HostControllerPI != 0x20) {\r
380	return EFI_INVALID_PARAMETER;\r
381	}\r
382	\r
383	//\r
384	// Find the usb host controller firstly, then connect with the remaining device path\r
385	//\r
386	AtLeastOneConnected = FALSE;\r
387	Status = gBS->LocateHandleBuffer (\r
388	ByProtocol,\r
389	&gEfiPciIoProtocolGuid,\r
390	NULL,\r
391	&HandleArrayCount,\r
392	&HandleArray\r
393	);\r
394	if (!EFI_ERROR (Status)) {\r
395	for (Index = 0; Index < HandleArrayCount; Index++) {\r
396	Status = gBS->HandleProtocol (\r
397	HandleArray[Index],\r
398	&gEfiPciIoProtocolGuid,\r
399	(VOID **)&PciIo\r
400	);\r
401	if (!EFI_ERROR (Status)) {\r
402	//\r
403	// Check whether the Pci device is the wanted usb host controller\r
404	//\r
405	Status = PciIo->Pci.Read (PciIo, EfiPciIoWidthUint8, 0x09, 3, &Class);\r
406	if (!EFI_ERROR (Status)) {\r
407	if ((PCI_CLASS_SERIAL == Class[2]) &&\r
408	(PCI_CLASS_SERIAL_USB == Class[1])) {\r
409	if (HostControllerPI == Class[0] \|\| HostControllerPI == 0xFF) {\r
410	Status = gBS->ConnectController (\r
411	HandleArray[Index],\r
412	NULL,\r
413	RemainingDevicePath,\r
414	FALSE\r
415	);\r
416	if (!EFI_ERROR(Status)) {\r
417	AtLeastOneConnected = TRUE;\r
418	}\r
419	}\r
420	}\r
421	}\r
422	}\r
423	}\r
424	\r
aaee3a97 ED	425	if (HandleArray != NULL) {\r
	426	FreePool (HandleArray);\r
	427	}\r
	428	\r
5c08e117	429	if (AtLeastOneConnected) {\r
	430	return EFI_SUCCESS;\r
	431	}\r
	432	}\r
	433	\r
	434	return EFI_NOT_FOUND;\r
	435	}\r