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

/** @file\r
  BDS Lib functions which relate with connect the device\r
\r
Copyright (c) 2004 - 2008, 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
/**\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 success, then still give one 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
\r
  if (DevicePathToConnect == NULL) {\r
    return EFI_SUCCESS;\r
  }\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
          Status = gDS->Dispatch ();\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
/**\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 (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
180a5a35 HT	4	Copyright (c) 2004 - 2008, Intel Corporation. All rights reserved.<BR>\r
180a5a35 HT	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
	68	\r
	69	/**\r
70	This function will create all handles associate with every device\r
71	path node. If the handle associate with one device path node can not\r
72	be created success, then still give one chance to do the dispatch,\r
73	which load the missing drivers if possible.\r
74	\r
75	@param DevicePathToConnect The device path which will be connected, it can be\r
76	a multi-instance device path\r
77	\r
78	@retval EFI_SUCCESS All handles associate with every device path node\r
79	have been created\r
80	@retval EFI_OUT_OF_RESOURCES There is no resource to create new handles\r
81	@retval EFI_NOT_FOUND Create the handle associate with one device path\r
82	node failed\r
83	\r
84	**/\r
85	EFI_STATUS\r
86	EFIAPI\r
87	BdsLibConnectDevicePath (\r
88	IN EFI_DEVICE_PATH_PROTOCOL *DevicePathToConnect\r
89	)\r
90	{\r
91	EFI_STATUS Status;\r
92	EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
93	EFI_DEVICE_PATH_PROTOCOL *CopyOfDevicePath;\r
94	EFI_DEVICE_PATH_PROTOCOL *Instance;\r
95	EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath;\r
96	EFI_DEVICE_PATH_PROTOCOL *Next;\r
97	EFI_HANDLE Handle;\r
98	EFI_HANDLE PreviousHandle;\r
99	UINTN Size;\r
100	\r
101	if (DevicePathToConnect == NULL) {\r
102	return EFI_SUCCESS;\r
103	}\r
104	\r
105	DevicePath = DuplicateDevicePath (DevicePathToConnect);\r
106	if (DevicePath == NULL) {\r
107	return EFI_OUT_OF_RESOURCES;\r
108	}\r
109	CopyOfDevicePath = DevicePath;\r
110	\r
111	do {\r
112	//\r
113	// The outer loop handles multi instance device paths.\r
114	// Only console variables contain multiple instance device paths.\r
115	//\r
116	// After this call DevicePath points to the next Instance\r
117	//\r
118	Instance = GetNextDevicePathInstance (&DevicePath, &Size);\r
119	if (Instance == NULL) {\r
120	FreePool (CopyOfDevicePath);\r
121	return EFI_OUT_OF_RESOURCES;\r
122	}\r
123	\r
124	Next = Instance;\r
125	while (!IsDevicePathEndType (Next)) {\r
126	Next = NextDevicePathNode (Next);\r
127	}\r
128	\r
129	SetDevicePathEndNode (Next);\r
130	\r
131	//\r
132	// Start the real work of connect with RemainingDevicePath\r
133	//\r
134	PreviousHandle = NULL;\r
135	do {\r
136	//\r
137	// Find the handle that best matches the Device Path. If it is only a\r
138	// partial match the remaining part of the device path is returned in\r
139	// RemainingDevicePath.\r
140	//\r
141	RemainingDevicePath = Instance;\r
142	Status = gBS->LocateDevicePath (&gEfiDevicePathProtocolGuid, &RemainingDevicePath, &Handle);\r
143	\r
144	if (!EFI_ERROR (Status)) {\r
145	if (Handle == PreviousHandle) {\r
146	//\r
147	// If no forward progress is made try invoking the Dispatcher.\r
148	// A new FV may have been added to the system an new drivers\r
149	// may now be found.\r
150	// Status == EFI_SUCCESS means a driver was dispatched\r
151	// Status == EFI_NOT_FOUND means no new drivers were dispatched\r
152	//\r
153	Status = gDS->Dispatch ();\r
154	}\r
155	\r
156	if (!EFI_ERROR (Status)) {\r
157	PreviousHandle = Handle;\r
158	//\r
159	// Connect all drivers that apply to Handle and RemainingDevicePath,\r
160	// the Recursive flag is FALSE so only one level will be expanded.\r
161	//\r
162	// Do not check the connect status here, if the connect controller fail,\r
163	// then still give the chance to do dispatch, because partial\r
164	// RemainingDevicepath may be in the new FV\r
165	//\r
166	// 1. If the connect fail, RemainingDevicepath and handle will not\r
167	// change, so next time will do the dispatch, then dispatch's status\r
168	// will take effect\r
169	// 2. If the connect success, the RemainingDevicepath and handle will\r
170	// change, then avoid the dispatch, we have chance to continue the\r
171	// next connection\r
172	//\r
173	gBS->ConnectController (Handle, NULL, RemainingDevicePath, FALSE);\r
174	}\r
175	}\r
176	//\r
177	// Loop until RemainingDevicePath is an empty device path\r
178	//\r
179	} while (!EFI_ERROR (Status) && !IsDevicePathEnd (RemainingDevicePath));\r
180	\r
181	} while (DevicePath != NULL);\r
182	\r
183	if (CopyOfDevicePath != NULL) {\r
184	FreePool (CopyOfDevicePath);\r
185	}\r
186	//\r
187	// All handle with DevicePath exists in the handle database\r
188	//\r
189	return Status;\r
190	}\r
191	\r
192	\r
193	/**\r
0977c9b2	194	This function will connect all current system handles recursively. \r
	195	\r
	196	gBS->ConnectController() service is invoked for each handle exist in system handler buffer.\r
	197	If the handle is bus type handler, all childrens also will be connected recursively\r
	198	by gBS->ConnectController().\r
5c08e117	199	\r
0977c9b2	200	@retval EFI_SUCCESS All handles and it's child handle have been connected\r
0977c9b2	201	@retval EFI_STATUS Error status returned by of gBS->LocateHandleBuffer().\r
5c08e117	202	\r
	203	**/\r
	204	EFI_STATUS\r
	205	EFIAPI\r
	206	BdsLibConnectAllEfi (\r
	207	VOID\r
	208	)\r
	209	{\r
	210	EFI_STATUS Status;\r
	211	UINTN HandleCount;\r
	212	EFI_HANDLE *HandleBuffer;\r
	213	UINTN Index;\r
	214	\r
	215	Status = gBS->LocateHandleBuffer (\r
	216	AllHandles,\r
	217	NULL,\r
	218	NULL,\r
	219	&HandleCount,\r
	220	&HandleBuffer\r
	221	);\r
	222	if (EFI_ERROR (Status)) {\r
	223	return Status;\r
	224	}\r
	225	\r
	226	for (Index = 0; Index < HandleCount; Index++) {\r
	227	Status = gBS->ConnectController (HandleBuffer[Index], NULL, NULL, TRUE);\r
	228	}\r
	229	\r
	230	if (HandleBuffer != NULL) {\r
	231	FreePool (HandleBuffer);\r
	232	}\r
	233	\r
	234	return EFI_SUCCESS;\r
	235	}\r
	236	\r
5c08e117	237	/**\r
0977c9b2	238	This function will disconnect all current system handles. \r
	239	\r
	240	gBS->DisconnectController() is invoked for each handle exists in system handle buffer.\r
	241	If handle is a bus type handle, all childrens also are disconnected recursively by\r
	242	gBS->DisconnectController().\r
5c08e117	243	\r
5c08e117	244	@retval EFI_SUCCESS All handles have been disconnected\r
0977c9b2	245	@retval EFI_STATUS Error status returned by of gBS->LocateHandleBuffer().\r
5c08e117	246	\r
	247	**/\r
	248	EFI_STATUS\r
	249	EFIAPI\r
	250	BdsLibDisconnectAllEfi (\r
	251	VOID\r
	252	)\r
	253	{\r
	254	EFI_STATUS Status;\r
	255	UINTN HandleCount;\r
	256	EFI_HANDLE *HandleBuffer;\r
	257	UINTN Index;\r
	258	\r
	259	//\r
	260	// Disconnect all\r
	261	//\r
	262	Status = gBS->LocateHandleBuffer (\r
	263	AllHandles,\r
	264	NULL,\r
	265	NULL,\r
	266	&HandleCount,\r
	267	&HandleBuffer\r
	268	);\r
	269	if (EFI_ERROR (Status)) {\r
	270	return Status;\r
	271	}\r
	272	\r
	273	for (Index = 0; Index < HandleCount; Index++) {\r
	274	Status = gBS->DisconnectController (HandleBuffer[Index], NULL, NULL);\r
	275	}\r
	276	\r
	277	if (HandleBuffer != NULL) {\r
	278	FreePool (HandleBuffer);\r
	279	}\r
	280	\r
	281	return EFI_SUCCESS;\r
	282	}\r
	283	\r
	284	\r
	285	/**\r
	286	Connects all drivers to all controllers.\r
	287	This function make sure all the current system driver will manage\r
	288	the correspoinding controllers if have. And at the same time, make\r
	289	sure all the system controllers have driver to manage it if have.\r
	290	\r
	291	**/\r
	292	VOID\r
	293	EFIAPI\r
	294	BdsLibConnectAllDriversToAllControllers (\r
	295	VOID\r
	296	)\r
	297	{\r
	298	EFI_STATUS Status;\r
	299	\r
	300	do {\r
	301	//\r
	302	// Connect All EFI 1.10 drivers following EFI 1.10 algorithm\r
	303	//\r
	304	BdsLibConnectAllEfi ();\r
	305	\r
	306	//\r
	307	// Check to see if it's possible to dispatch an more DXE drivers.\r
	308	// The BdsLibConnectAllEfi () may have made new DXE drivers show up.\r
	309	// If anything is Dispatched Status == EFI_SUCCESS and we will try\r
310	// the connect again.\r
311	//\r
312	Status = gDS->Dispatch ();\r
313	\r
314	} while (!EFI_ERROR (Status));\r
315	\r
316	}\r
317	\r
318	\r
319	/**\r
320	Connect the specific Usb device which match the short form device path,\r
321	and whose bus is determined by Host Controller (Uhci or Ehci).\r
322	\r
323	@param HostControllerPI Uhci (0x00) or Ehci (0x20) or Both uhci and ehci\r
324	(0xFF)\r
325	@param RemainingDevicePath a short-form device path that starts with the first\r
326	element being a USB WWID or a USB Class device\r
327	path\r
328	\r
329	@return EFI_INVALID_PARAMETER RemainingDevicePath is NULL pointer.\r
330	RemainingDevicePath is not a USB device path.\r
331	Invalid HostControllerPI type.\r
332	@return EFI_SUCCESS Success to connect USB device\r
333	@return EFI_NOT_FOUND Fail to find handle for USB controller to connect.\r
334	\r
335	**/\r
336	EFI_STATUS\r
337	EFIAPI\r
338	BdsLibConnectUsbDevByShortFormDP(\r
339	IN UINT8 HostControllerPI,\r
340	IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
341	)\r
342	{\r
343	EFI_STATUS Status;\r
344	EFI_HANDLE *HandleArray;\r
345	UINTN HandleArrayCount;\r
346	UINTN Index;\r
347	EFI_PCI_IO_PROTOCOL *PciIo;\r
348	UINT8 Class[3];\r
349	BOOLEAN AtLeastOneConnected;\r
350	\r
351	//\r
352	// Check the passed in parameters\r
353	//\r
354	if (RemainingDevicePath == NULL) {\r
355	return EFI_INVALID_PARAMETER;\r
356	}\r
357	\r
358	if ((DevicePathType (RemainingDevicePath) != MESSAGING_DEVICE_PATH) \|\|\r
359	((DevicePathSubType (RemainingDevicePath) != MSG_USB_CLASS_DP)\r
360	&& (DevicePathSubType (RemainingDevicePath) != MSG_USB_WWID_DP)\r
361	)) {\r
362	return EFI_INVALID_PARAMETER;\r
363	}\r
364	\r
365	if (HostControllerPI != 0xFF &&\r
366	HostControllerPI != 0x00 &&\r
367	HostControllerPI != 0x20) {\r
368	return EFI_INVALID_PARAMETER;\r
369	}\r
370	\r
371	//\r
372	// Find the usb host controller firstly, then connect with the remaining device path\r
373	//\r
374	AtLeastOneConnected = FALSE;\r
375	Status = gBS->LocateHandleBuffer (\r
376	ByProtocol,\r
377	&gEfiPciIoProtocolGuid,\r
378	NULL,\r
379	&HandleArrayCount,\r
380	&HandleArray\r
381	);\r
382	if (!EFI_ERROR (Status)) {\r
383	for (Index = 0; Index < HandleArrayCount; Index++) {\r
384	Status = gBS->HandleProtocol (\r
385	HandleArray[Index],\r
386	&gEfiPciIoProtocolGuid,\r
387	(VOID **)&PciIo\r
388	);\r
389	if (!EFI_ERROR (Status)) {\r
390	//\r
391	// Check whether the Pci device is the wanted usb host controller\r
392	//\r
393	Status = PciIo->Pci.Read (PciIo, EfiPciIoWidthUint8, 0x09, 3, &Class);\r
394	if (!EFI_ERROR (Status)) {\r
395	if ((PCI_CLASS_SERIAL == Class[2]) &&\r
396	(PCI_CLASS_SERIAL_USB == Class[1])) {\r
397	if (HostControllerPI == Class[0] \|\| HostControllerPI == 0xFF) {\r
398	Status = gBS->ConnectController (\r
399	HandleArray[Index],\r
400	NULL,\r
401	RemainingDevicePath,\r
402	FALSE\r
403	);\r
404	if (!EFI_ERROR(Status)) {\r
405	AtLeastOneConnected = TRUE;\r
406	}\r
407	}\r
408	}\r
409	}\r
410	}\r
411	}\r
412	\r
413	if (AtLeastOneConnected) {\r
414	return EFI_SUCCESS;\r
415	}\r
416	}\r
417	\r
418	return EFI_NOT_FOUND;\r
419	}\r