[mirror_edk2.git] / MdeModulePkg / Bus / Usb / UsbBusPei / UsbIoPeim.c

/** @file\r
The module is used to implement Usb Io PPI interfaces.\r
\r
Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved. <BR>\r
  \r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions\r
of the BSD License which accompanies this distribution.  The\r
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 "UsbPeim.h"\r
#include "PeiUsbLib.h"\r
\r
/**\r
  Submits control transfer to a target USB device.\r
  \r
  @param  PeiServices            The pointer of EFI_PEI_SERVICES.\r
  @param  This                   The pointer of PEI_USB_IO_PPI.\r
  @param  Request                USB device request to send.\r
  @param  Direction              Specifies the data direction for the data stage.\r
  @param  Timeout                Indicates the maximum timeout, in millisecond. If Timeout\r
                                 is 0, then the caller must wait for the function to be\r
                                 completed until EFI_SUCCESS or EFI_DEVICE_ERROR is returned.\r
  @param  Data                   Data buffer to be transmitted or received from USB device.\r
  @param  DataLength             The size (in bytes) of the data buffer.\r
\r
  @retval EFI_SUCCESS            Transfer was completed successfully.\r
  @retval EFI_OUT_OF_RESOURCES   The transfer failed due to lack of resources.\r
  @retval EFI_INVALID_PARAMETER  Some parameters are invalid.\r
  @retval EFI_TIMEOUT            Transfer failed due to timeout.\r
  @retval EFI_DEVICE_ERROR       Transfer failed due to host controller or device error.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
PeiUsbControlTransfer (\r
  IN     EFI_PEI_SERVICES          **PeiServices,\r
  IN     PEI_USB_IO_PPI            *This,\r
  IN     EFI_USB_DEVICE_REQUEST    *Request,\r
  IN     EFI_USB_DATA_DIRECTION    Direction,\r
  IN     UINT32                    Timeout,\r
  IN OUT VOID                      *Data,      OPTIONAL\r
  IN     UINTN                     DataLength  OPTIONAL\r
  )\r
{\r
  EFI_STATUS                  Status;\r
  PEI_USB_DEVICE              *PeiUsbDev;\r
  UINT32                      TransferResult;\r
\r
  PeiUsbDev = PEI_USB_DEVICE_FROM_THIS (This);\r
\r
  if (PeiUsbDev->Usb2HcPpi != NULL) {\r
    Status = PeiUsbDev->Usb2HcPpi->ControlTransfer (\r
                        PeiServices,\r
                        PeiUsbDev->Usb2HcPpi,\r
                        PeiUsbDev->DeviceAddress,\r
                        PeiUsbDev->DeviceSpeed,\r
                        PeiUsbDev->MaxPacketSize0,\r
                        Request,\r
                        Direction,\r
                        Data,\r
                        &DataLength,\r
                        Timeout,\r
                        &(PeiUsbDev->Translator),\r
                        &TransferResult\r
                        );\r
  } else {\r
    Status = PeiUsbDev->UsbHcPpi->ControlTransfer (\r
                        PeiServices,\r
                        PeiUsbDev->UsbHcPpi,\r
                        PeiUsbDev->DeviceAddress,\r
                        PeiUsbDev->DeviceSpeed,\r
                        PeiUsbDev->MaxPacketSize0,\r
                        Request,\r
                        Direction,\r
                        Data,\r
                        &DataLength,\r
                        Timeout,\r
                        &TransferResult\r
                        );\r
  }\r
  return Status;\r
}\r
\r
/**\r
  Submits bulk transfer to a bulk endpoint of a USB device.\r
  \r
  @param  PeiServices           The pointer of EFI_PEI_SERVICES.\r
  @param  This                  The pointer of PEI_USB_IO_PPI.\r
  @param  DeviceEndpoint        Endpoint number and its direction in bit 7.\r
  @param  Data                  A pointer to the buffer of data to transmit \r
                                from or receive into.\r
  @param  DataLength            The lenght of the data buffer.\r
  @param  Timeout               Indicates the maximum time, in millisecond, which the\r
                                transfer is allowed to complete. If Timeout is 0, then\r
                                the caller must wait for the function to be completed\r
                                until EFI_SUCCESS or EFI_DEVICE_ERROR is returned.\r
\r
  @retval EFI_SUCCESS           The transfer was completed successfully.\r
  @retval EFI_OUT_OF_RESOURCES  The transfer failed due to lack of resource.\r
  @retval EFI_INVALID_PARAMETER Parameters are invalid.\r
  @retval EFI_TIMEOUT           The transfer failed due to timeout.\r
  @retval EFI_DEVICE_ERROR      The transfer failed due to host controller error.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
PeiUsbBulkTransfer (\r
  IN     EFI_PEI_SERVICES    **PeiServices,\r
  IN     PEI_USB_IO_PPI      *This,\r
  IN     UINT8               DeviceEndpoint,\r
  IN OUT VOID                *Data,\r
  IN OUT UINTN               *DataLength,\r
  IN     UINTN               Timeout\r
  )\r
{\r
  EFI_STATUS                  Status;\r
  PEI_USB_DEVICE              *PeiUsbDev;\r
  UINT32                      TransferResult;\r
  UINTN                       MaxPacketLength;\r
  UINT8                       DataToggle;\r
  UINT8                       OldToggle;\r
  EFI_USB_ENDPOINT_DESCRIPTOR *EndpointDescriptor;\r
  UINT8                       EndpointIndex;\r
  VOID                        *Data2[EFI_USB_MAX_BULK_BUFFER_NUM];\r
\r
  PeiUsbDev     = PEI_USB_DEVICE_FROM_THIS (This);\r
\r
  EndpointDescriptor = NULL;\r
  EndpointIndex = 0;\r
  Data2[0] = Data;\r
  Data2[1] = NULL;\r
\r
  while (EndpointIndex < MAX_ENDPOINT) {\r
    Status = PeiUsbGetEndpointDescriptor (PeiServices, This, EndpointIndex, &EndpointDescriptor);\r
    if (EFI_ERROR (Status)) {\r
      return EFI_INVALID_PARAMETER;\r
    }\r
\r
    if (EndpointDescriptor->EndpointAddress == DeviceEndpoint) {\r
      break;\r
    }\r
\r
    EndpointIndex++;\r
  }\r
\r
  if (EndpointIndex == MAX_ENDPOINT) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  MaxPacketLength = PeiUsbDev->EndpointDesc[EndpointIndex]->MaxPacketSize;\r
  if ((PeiUsbDev->DataToggle & (1 << EndpointIndex)) != 0) {\r
    DataToggle = 1;\r
  } else {\r
    DataToggle = 0;\r
  }\r
\r
  OldToggle = DataToggle;\r
\r
  if (PeiUsbDev->Usb2HcPpi != NULL) {\r
    Status = PeiUsbDev->Usb2HcPpi->BulkTransfer (\r
                        PeiServices,\r
                        PeiUsbDev->Usb2HcPpi,\r
                        PeiUsbDev->DeviceAddress,\r
                        DeviceEndpoint,\r
                        PeiUsbDev->DeviceSpeed,\r
                        MaxPacketLength,\r
                        Data2,\r
                        DataLength,\r
                        &DataToggle,\r
                        Timeout,\r
                        &(PeiUsbDev->Translator),\r
                        &TransferResult\r
                        );\r
  } else {\r
    Status = PeiUsbDev->UsbHcPpi->BulkTransfer (\r
                        PeiServices,\r
                        PeiUsbDev->UsbHcPpi,\r
                        PeiUsbDev->DeviceAddress,\r
                        DeviceEndpoint,\r
                        (UINT8) MaxPacketLength,\r
                        Data,\r
                        DataLength,\r
                        &DataToggle,\r
                        Timeout,\r
                        &TransferResult\r
                        );\r
  }\r
\r
  if (OldToggle != DataToggle) {\r
    PeiUsbDev->DataToggle = (UINT8) (PeiUsbDev->DataToggle ^ (1 << EndpointIndex));\r
  }\r
\r
  return Status;\r
}\r
\r
/**\r
  Get the usb interface descriptor.\r
\r
  @param  PeiServices          General-purpose services that are available to every PEIM.\r
  @param  This                 Indicates the PEI_USB_IO_PPI instance.\r
  @param  InterfaceDescriptor  Request interface descriptor.\r
\r
\r
  @retval EFI_SUCCESS          Usb interface descriptor is obtained successfully.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
PeiUsbGetInterfaceDescriptor (\r
  IN  EFI_PEI_SERVICES               **PeiServices,\r
  IN  PEI_USB_IO_PPI                 *This,\r
  OUT EFI_USB_INTERFACE_DESCRIPTOR   **InterfaceDescriptor\r
  )\r
{\r
  PEI_USB_DEVICE  *PeiUsbDev;\r
  PeiUsbDev             = PEI_USB_DEVICE_FROM_THIS (This);\r
  *InterfaceDescriptor  = PeiUsbDev->InterfaceDesc;\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  Get the usb endpoint descriptor.\r
\r
  @param  PeiServices          General-purpose services that are available to every PEIM.\r
  @param  This                 Indicates the PEI_USB_IO_PPI instance.\r
  @param  EndpointIndex        The valid index of the specified endpoint.\r
  @param  EndpointDescriptor   Request endpoint descriptor.\r
\r
  @retval EFI_SUCCESS       Usb endpoint descriptor is obtained successfully.\r
  @retval EFI_NOT_FOUND     Usb endpoint descriptor is NOT found.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
PeiUsbGetEndpointDescriptor (\r
  IN  EFI_PEI_SERVICES               **PeiServices,\r
  IN  PEI_USB_IO_PPI                 *This,\r
  IN  UINT8                          EndpointIndex,\r
  OUT EFI_USB_ENDPOINT_DESCRIPTOR    **EndpointDescriptor\r
  )\r
{\r
  PEI_USB_DEVICE  *PeiUsbDev;\r
\r
  PeiUsbDev = PEI_USB_DEVICE_FROM_THIS (This);\r
\r
  ASSERT (EndpointDescriptor != NULL);\r
\r
  //\r
  // The valid range of EndpointIndex is 0..15\r
  // If EndpointIndex is lesser than 15 but larger than the number of interfaces,\r
  // a EFI_NOT_FOUND should be returned\r
  //\r
  ASSERT (EndpointIndex <= 15);\r
\r
  if (EndpointIndex >= PeiUsbDev->InterfaceDesc->NumEndpoints) {\r
    return EFI_NOT_FOUND;\r
  }\r
\r
  *EndpointDescriptor = PeiUsbDev->EndpointDesc[EndpointIndex];\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  Reset the port and re-configure the usb device.\r
\r
  @param  PeiServices    General-purpose services that are available to every PEIM.\r
  @param  This           Indicates the PEI_USB_IO_PPI instance.\r
\r
  @retval EFI_SUCCESS    Usb device is reset and configured successfully.\r
  @retval Others         Other failure occurs.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
PeiUsbPortReset (\r
  IN EFI_PEI_SERVICES               **PeiServices,\r
  IN PEI_USB_IO_PPI                 *This\r
  )\r
{\r
  PEI_USB_DEVICE  *PeiUsbDev;\r
  EFI_STATUS      Status;\r
  UINT8           Address;\r
\r
  PeiUsbDev = PEI_USB_DEVICE_FROM_THIS (This);\r
\r
  ResetRootPort (\r
    PeiServices,\r
    PeiUsbDev->UsbHcPpi,\r
    PeiUsbDev->Usb2HcPpi,\r
    PeiUsbDev->DeviceAddress,\r
    0\r
    );\r
\r
  //\r
  // Set address\r
  //\r
  Address                   = PeiUsbDev->DeviceAddress;\r
  PeiUsbDev->DeviceAddress  = 0;\r
\r
  Status = PeiUsbSetDeviceAddress (\r
            PeiServices,\r
            This,\r
            Address\r
            );\r
\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  PeiUsbDev->DeviceAddress = Address;\r
\r
  //\r
  // Set default configuration\r
  //\r
  Status = PeiUsbSetConfiguration (\r
            PeiServices,\r
            This\r
            );\r
\r
  return Status;\r
}\r
Commit	Line	Data
4b1bf81c	1	/** @file\r
	2	The module is used to implement Usb Io PPI interfaces.\r
	3	\r
ca243131	4	Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved. <BR>\r
4b1bf81c	5	\r
	6	This program and the accompanying materials\r
	7	are licensed and made available under the terms and conditions\r
	8	of the BSD License which accompanies this distribution. The\r
	9	full text of the license may be found at\r
	10	http://opensource.org/licenses/bsd-license.php\r
	11	\r
	12	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	13	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	14	\r
	15	**/\r
	16	\r
	17	#include "UsbPeim.h"\r
	18	#include "PeiUsbLib.h"\r
	19	\r
	20	/**\r
	21	Submits control transfer to a target USB device.\r
	22	\r
	23	@param PeiServices The pointer of EFI_PEI_SERVICES.\r
	24	@param This The pointer of PEI_USB_IO_PPI.\r
	25	@param Request USB device request to send.\r
	26	@param Direction Specifies the data direction for the data stage.\r
ca243131 FT	27	@param Timeout Indicates the maximum timeout, in millisecond. If Timeout\r
	28	is 0, then the caller must wait for the function to be\r
	29	completed until EFI_SUCCESS or EFI_DEVICE_ERROR is returned.\r
4b1bf81c	30	@param Data Data buffer to be transmitted or received from USB device.\r
	31	@param DataLength The size (in bytes) of the data buffer.\r
	32	\r
	33	@retval EFI_SUCCESS Transfer was completed successfully.\r
	34	@retval EFI_OUT_OF_RESOURCES The transfer failed due to lack of resources.\r
	35	@retval EFI_INVALID_PARAMETER Some parameters are invalid.\r
	36	@retval EFI_TIMEOUT Transfer failed due to timeout.\r
	37	@retval EFI_DEVICE_ERROR Transfer failed due to host controller or device error.\r
	38	\r
	39	**/\r
	40	EFI_STATUS\r
	41	EFIAPI\r
	42	PeiUsbControlTransfer (\r
	43	IN EFI_PEI_SERVICES **PeiServices,\r
	44	IN PEI_USB_IO_PPI *This,\r
	45	IN EFI_USB_DEVICE_REQUEST *Request,\r
	46	IN EFI_USB_DATA_DIRECTION Direction,\r
	47	IN UINT32 Timeout,\r
	48	IN OUT VOID *Data, OPTIONAL\r
	49	IN UINTN DataLength OPTIONAL\r
	50	)\r
	51	{\r
	52	EFI_STATUS Status;\r
	53	PEI_USB_DEVICE *PeiUsbDev;\r
	54	UINT32 TransferResult;\r
	55	\r
	56	PeiUsbDev = PEI_USB_DEVICE_FROM_THIS (This);\r
	57	\r
	58	if (PeiUsbDev->Usb2HcPpi != NULL) {\r
	59	Status = PeiUsbDev->Usb2HcPpi->ControlTransfer (\r
	60	PeiServices,\r
	61	PeiUsbDev->Usb2HcPpi,\r
	62	PeiUsbDev->DeviceAddress,\r
	63	PeiUsbDev->DeviceSpeed,\r
	64	PeiUsbDev->MaxPacketSize0,\r
	65	Request,\r
	66	Direction,\r
	67	Data,\r
	68	&DataLength,\r
	69	Timeout,\r
	70	&(PeiUsbDev->Translator),\r
	71	&TransferResult\r
	72	);\r
	73	} else {\r
	74	Status = PeiUsbDev->UsbHcPpi->ControlTransfer (\r
	75	PeiServices,\r
	76	PeiUsbDev->UsbHcPpi,\r
	77	PeiUsbDev->DeviceAddress,\r
	78	PeiUsbDev->DeviceSpeed,\r
	79	PeiUsbDev->MaxPacketSize0,\r
	80	Request,\r
	81	Direction,\r
	82	Data,\r
	83	&DataLength,\r
	84	Timeout,\r
	85	&TransferResult\r
	86	);\r
	87	}\r
	88	return Status;\r
	89	}\r
	90	\r
	91	/**\r
	92	Submits bulk transfer to a bulk endpoint of a USB device.\r
	93	\r
94	@param PeiServices The pointer of EFI_PEI_SERVICES.\r
95	@param This The pointer of PEI_USB_IO_PPI.\r
96	@param DeviceEndpoint Endpoint number and its direction in bit 7.\r
97	@param Data A pointer to the buffer of data to transmit \r
98	from or receive into.\r
99	@param DataLength The lenght of the data buffer.\r
100	@param Timeout Indicates the maximum time, in millisecond, which the\r
ca243131 FT	101	transfer is allowed to complete. If Timeout is 0, then\r
	102	the caller must wait for the function to be completed\r
	103	until EFI_SUCCESS or EFI_DEVICE_ERROR is returned.\r
4b1bf81c	104	\r
	105	@retval EFI_SUCCESS The transfer was completed successfully.\r
	106	@retval EFI_OUT_OF_RESOURCES The transfer failed due to lack of resource.\r
	107	@retval EFI_INVALID_PARAMETER Parameters are invalid.\r
	108	@retval EFI_TIMEOUT The transfer failed due to timeout.\r
	109	@retval EFI_DEVICE_ERROR The transfer failed due to host controller error.\r
	110	\r
	111	**/\r
	112	EFI_STATUS\r
	113	EFIAPI\r
	114	PeiUsbBulkTransfer (\r
	115	IN EFI_PEI_SERVICES **PeiServices,\r
	116	IN PEI_USB_IO_PPI *This,\r
	117	IN UINT8 DeviceEndpoint,\r
	118	IN OUT VOID *Data,\r
	119	IN OUT UINTN *DataLength,\r
	120	IN UINTN Timeout\r
	121	)\r
	122	{\r
	123	EFI_STATUS Status;\r
	124	PEI_USB_DEVICE *PeiUsbDev;\r
	125	UINT32 TransferResult;\r
	126	UINTN MaxPacketLength;\r
	127	UINT8 DataToggle;\r
	128	UINT8 OldToggle;\r
	129	EFI_USB_ENDPOINT_DESCRIPTOR *EndpointDescriptor;\r
	130	UINT8 EndpointIndex;\r
	131	VOID *Data2[EFI_USB_MAX_BULK_BUFFER_NUM];\r
	132	\r
	133	PeiUsbDev = PEI_USB_DEVICE_FROM_THIS (This);\r
	134	\r
	135	EndpointDescriptor = NULL;\r
	136	EndpointIndex = 0;\r
	137	Data2[0] = Data;\r
	138	Data2[1] = NULL;\r
	139	\r
	140	while (EndpointIndex < MAX_ENDPOINT) {\r
	141	Status = PeiUsbGetEndpointDescriptor (PeiServices, This, EndpointIndex, &EndpointDescriptor);\r
	142	if (EFI_ERROR (Status)) {\r
	143	return EFI_INVALID_PARAMETER;\r
	144	}\r
	145	\r
	146	if (EndpointDescriptor->EndpointAddress == DeviceEndpoint) {\r
	147	break;\r
	148	}\r
	149	\r
	150	EndpointIndex++;\r
	151	}\r
	152	\r
	153	if (EndpointIndex == MAX_ENDPOINT) {\r
	154	return EFI_INVALID_PARAMETER;\r
	155	}\r
	156	\r
	157	MaxPacketLength = PeiUsbDev->EndpointDesc[EndpointIndex]->MaxPacketSize;\r
	158	if ((PeiUsbDev->DataToggle & (1 << EndpointIndex)) != 0) {\r
	159	DataToggle = 1;\r
	160	} else {\r
	161	DataToggle = 0;\r
	162	}\r
	163	\r
	164	OldToggle = DataToggle;\r
	165	\r
	166	if (PeiUsbDev->Usb2HcPpi != NULL) {\r
	167	Status = PeiUsbDev->Usb2HcPpi->BulkTransfer (\r
168	PeiServices,\r
169	PeiUsbDev->Usb2HcPpi,\r
170	PeiUsbDev->DeviceAddress,\r
171	DeviceEndpoint,\r
172	PeiUsbDev->DeviceSpeed,\r
173	MaxPacketLength,\r
174	Data2,\r
175	DataLength,\r
176	&DataToggle,\r
177	Timeout,\r
178	&(PeiUsbDev->Translator),\r
179	&TransferResult\r
180	);\r
181	} else {\r
182	Status = PeiUsbDev->UsbHcPpi->BulkTransfer (\r
183	PeiServices,\r
184	PeiUsbDev->UsbHcPpi,\r
185	PeiUsbDev->DeviceAddress,\r
186	DeviceEndpoint,\r
187	(UINT8) MaxPacketLength,\r
188	Data,\r
189	DataLength,\r
190	&DataToggle,\r
191	Timeout,\r
192	&TransferResult\r
193	);\r
194	}\r
195	\r
196	if (OldToggle != DataToggle) {\r
197	PeiUsbDev->DataToggle = (UINT8) (PeiUsbDev->DataToggle ^ (1 << EndpointIndex));\r
198	}\r
199	\r
200	return Status;\r
201	}\r
202	\r
203	/**\r
204	Get the usb interface descriptor.\r
205	\r
206	@param PeiServices General-purpose services that are available to every PEIM.\r
207	@param This Indicates the PEI_USB_IO_PPI instance.\r
208	@param InterfaceDescriptor Request interface descriptor.\r
209	\r
210	\r
211	@retval EFI_SUCCESS Usb interface descriptor is obtained successfully.\r
212	\r
213	**/\r
214	EFI_STATUS\r
215	EFIAPI\r
216	PeiUsbGetInterfaceDescriptor (\r
217	IN EFI_PEI_SERVICES **PeiServices,\r
218	IN PEI_USB_IO_PPI *This,\r
219	OUT EFI_USB_INTERFACE_DESCRIPTOR **InterfaceDescriptor\r
220	)\r
221	{\r
222	PEI_USB_DEVICE *PeiUsbDev;\r
223	PeiUsbDev = PEI_USB_DEVICE_FROM_THIS (This);\r
224	*InterfaceDescriptor = PeiUsbDev->InterfaceDesc;\r
225	return EFI_SUCCESS;\r
226	}\r
227	\r
228	/**\r
229	Get the usb endpoint descriptor.\r
230	\r
231	@param PeiServices General-purpose services that are available to every PEIM.\r
232	@param This Indicates the PEI_USB_IO_PPI instance.\r
233	@param EndpointIndex The valid index of the specified endpoint.\r
234	@param EndpointDescriptor Request endpoint descriptor.\r
235	\r
236	@retval EFI_SUCCESS Usb endpoint descriptor is obtained successfully.\r
237	@retval EFI_NOT_FOUND Usb endpoint descriptor is NOT found.\r
238	\r
239	**/\r
240	EFI_STATUS\r
241	EFIAPI\r
242	PeiUsbGetEndpointDescriptor (\r
243	IN EFI_PEI_SERVICES **PeiServices,\r
244	IN PEI_USB_IO_PPI *This,\r
245	IN UINT8 EndpointIndex,\r
246	OUT EFI_USB_ENDPOINT_DESCRIPTOR **EndpointDescriptor\r
247	)\r
248	{\r
249	PEI_USB_DEVICE *PeiUsbDev;\r
250	\r
251	PeiUsbDev = PEI_USB_DEVICE_FROM_THIS (This);\r
252	\r
253	ASSERT (EndpointDescriptor != NULL);\r
254	\r
255	//\r
256	// The valid range of EndpointIndex is 0..15\r
257	// If EndpointIndex is lesser than 15 but larger than the number of interfaces,\r
258	// a EFI_NOT_FOUND should be returned\r
259	//\r
260	ASSERT (EndpointIndex <= 15);\r
261	\r
262	if (EndpointIndex >= PeiUsbDev->InterfaceDesc->NumEndpoints) {\r
263	return EFI_NOT_FOUND;\r
264	}\r
265	\r
266	*EndpointDescriptor = PeiUsbDev->EndpointDesc[EndpointIndex];\r
267	\r
268	return EFI_SUCCESS;\r
269	}\r
270	\r
271	/**\r
272	Reset the port and re-configure the usb device.\r
273	\r
274	@param PeiServices General-purpose services that are available to every PEIM.\r
275	@param This Indicates the PEI_USB_IO_PPI instance.\r
276	\r
277	@retval EFI_SUCCESS Usb device is reset and configured successfully.\r
278	@retval Others Other failure occurs.\r
279	\r
280	**/\r
281	EFI_STATUS\r
282	EFIAPI\r
283	PeiUsbPortReset (\r
284	IN EFI_PEI_SERVICES **PeiServices,\r
285	IN PEI_USB_IO_PPI *This\r
286	)\r
287	{\r
288	PEI_USB_DEVICE *PeiUsbDev;\r
289	EFI_STATUS Status;\r
290	UINT8 Address;\r
291	\r
292	PeiUsbDev = PEI_USB_DEVICE_FROM_THIS (This);\r
293	\r
294	ResetRootPort (\r
295	PeiServices,\r
296	PeiUsbDev->UsbHcPpi,\r
297	PeiUsbDev->Usb2HcPpi,\r
298	PeiUsbDev->DeviceAddress,\r
299	0\r
300	);\r
301	\r
302	//\r
303	// Set address\r
304	//\r
305	Address = PeiUsbDev->DeviceAddress;\r
306	PeiUsbDev->DeviceAddress = 0;\r
307	\r
308	Status = PeiUsbSetDeviceAddress (\r
309	PeiServices,\r
310	This,\r
311	Address\r
312	);\r
313	\r
314	if (EFI_ERROR (Status)) {\r
315	return Status;\r
316	}\r
317	\r
318	PeiUsbDev->DeviceAddress = Address;\r
319	\r
320	//\r
321	// Set default configuration\r
322	//\r
323	Status = PeiUsbSetConfiguration (\r
324	PeiServices,\r
325	This\r
326	);\r
327	\r
328	return Status;\r
329	}\r