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Usb2HostController.h File Reference

EFI_USB2_HC_PROTOCOL as defined in UEFI 2.0. More...

#include <ipxe/efi/Protocol/UsbIo.h>

Go to the source code of this file.

Data Structures

struct  EFI_USB_PORT_STATUS
 
struct  EFI_USB2_HC_TRANSACTION_TRANSLATOR
 
struct  _EFI_USB2_HC_PROTOCOL
 The EFI_USB2_HC_PROTOCOL provides USB host controller management, basic data transactions over a USB bus, and USB root hub access. More...
 

Macros

#define EFI_USB2_HC_PROTOCOL_GUID
 
#define USB_PORT_STAT_CONNECTION   0x0001
 EFI_USB_PORT_STATUS.PortStatus bit definition. More...
 
#define USB_PORT_STAT_ENABLE   0x0002
 
#define USB_PORT_STAT_SUSPEND   0x0004
 
#define USB_PORT_STAT_OVERCURRENT   0x0008
 
#define USB_PORT_STAT_RESET   0x0010
 
#define USB_PORT_STAT_POWER   0x0100
 
#define USB_PORT_STAT_LOW_SPEED   0x0200
 
#define USB_PORT_STAT_HIGH_SPEED   0x0400
 
#define USB_PORT_STAT_SUPER_SPEED   0x0800
 
#define USB_PORT_STAT_OWNER   0x2000
 
#define USB_PORT_STAT_C_CONNECTION   0x0001
 EFI_USB_PORT_STATUS.PortChangeStatus bit definition. More...
 
#define USB_PORT_STAT_C_ENABLE   0x0002
 
#define USB_PORT_STAT_C_SUSPEND   0x0004
 
#define USB_PORT_STAT_C_OVERCURRENT   0x0008
 
#define USB_PORT_STAT_C_RESET   0x0010
 
#define EFI_USB_SPEED_FULL   0x0000
 12 Mb/s, USB 1.1 OHCI and UHCI HC. More...
 
#define EFI_USB_SPEED_LOW   0x0001
 1 Mb/s, USB 1.1 OHCI and UHCI HC. More...
 
#define EFI_USB_SPEED_HIGH   0x0002
 480 Mb/s, USB 2.0 EHCI HC. More...
 
#define EFI_USB_SPEED_SUPER   0x0003
 4.8 Gb/s, USB 3.0 XHCI HC. More...
 
#define EFI_USB_HC_RESET_GLOBAL   0x0001
 
#define EFI_USB_HC_RESET_HOST_CONTROLLER   0x0002
 
#define EFI_USB_HC_RESET_GLOBAL_WITH_DEBUG   0x0004
 
#define EFI_USB_HC_RESET_HOST_WITH_DEBUG   0x0008
 
#define EFI_USB_MAX_BULK_BUFFER_NUM   10
 
#define EFI_USB_MAX_ISO_BUFFER_NUM   7
 
#define EFI_USB_MAX_ISO_BUFFER_NUM1   2
 

Typedefs

typedef struct _EFI_USB2_HC_PROTOCOL EFI_USB2_HC_PROTOCOL
 Forward reference for pure ANSI compatability. More...
 
typedef EFI_STATUS(EFIAPIEFI_USB2_HC_PROTOCOL_GET_CAPABILITY) (IN EFI_USB2_HC_PROTOCOL *This, OUT UINT8 *MaxSpeed, OUT UINT8 *PortNumber, OUT UINT8 *Is64BitCapable)
 Retrieves the Host Controller capabilities. More...
 
typedef EFI_STATUS(EFIAPIEFI_USB2_HC_PROTOCOL_RESET) (IN EFI_USB2_HC_PROTOCOL *This, IN UINT16 Attributes)
 Provides software reset for the USB host controller. More...
 
typedef EFI_STATUS(EFIAPIEFI_USB2_HC_PROTOCOL_GET_STATE) (IN EFI_USB2_HC_PROTOCOL *This, OUT EFI_USB_HC_STATE *State)
 Retrieves current state of the USB host controller. More...
 
typedef EFI_STATUS(EFIAPIEFI_USB2_HC_PROTOCOL_SET_STATE) (IN EFI_USB2_HC_PROTOCOL *This, IN EFI_USB_HC_STATE State)
 Sets the USB host controller to a specific state. More...
 
typedef EFI_STATUS(EFIAPIEFI_USB2_HC_PROTOCOL_CONTROL_TRANSFER) (IN EFI_USB2_HC_PROTOCOL *This, IN UINT8 DeviceAddress, IN UINT8 DeviceSpeed, IN UINTN MaximumPacketLength, IN EFI_USB_DEVICE_REQUEST *Request, IN EFI_USB_DATA_DIRECTION TransferDirection, IN OUT VOID *Data OPTIONAL, IN OUT UINTN *DataLength OPTIONAL, IN UINTN TimeOut, IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator, OUT UINT32 *TransferResult)
 Submits control transfer to a target USB device. More...
 
typedef EFI_STATUS(EFIAPIEFI_USB2_HC_PROTOCOL_BULK_TRANSFER) (IN EFI_USB2_HC_PROTOCOL *This, IN UINT8 DeviceAddress, IN UINT8 EndPointAddress, IN UINT8 DeviceSpeed, IN UINTN MaximumPacketLength, IN UINT8 DataBuffersNumber, IN OUT VOID *Data[EFI_USB_MAX_BULK_BUFFER_NUM], IN OUT UINTN *DataLength, IN OUT UINT8 *DataToggle, IN UINTN TimeOut, IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator, OUT UINT32 *TransferResult)
 Submits bulk transfer to a bulk endpoint of a USB device. More...
 
typedef EFI_STATUS(EFIAPIEFI_USB2_HC_PROTOCOL_ASYNC_INTERRUPT_TRANSFER) (IN EFI_USB2_HC_PROTOCOL *This, IN UINT8 DeviceAddress, IN UINT8 EndPointAddress, IN UINT8 DeviceSpeed, IN UINTN MaxiumPacketLength, IN BOOLEAN IsNewTransfer, IN OUT UINT8 *DataToggle, IN UINTN PollingInterval OPTIONAL, IN UINTN DataLength OPTIONAL, IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator OPTIONAL, IN EFI_ASYNC_USB_TRANSFER_CALLBACK CallBackFunction OPTIONAL, IN VOID *Context OPTIONAL)
 Submits an asynchronous interrupt transfer to an interrupt endpoint of a USB device. More...
 
typedef EFI_STATUS(EFIAPIEFI_USB2_HC_PROTOCOL_SYNC_INTERRUPT_TRANSFER) (IN EFI_USB2_HC_PROTOCOL *This, IN UINT8 DeviceAddress, IN UINT8 EndPointAddress, IN UINT8 DeviceSpeed, IN UINTN MaximumPacketLength, IN OUT VOID *Data, IN OUT UINTN *DataLength, IN OUT UINT8 *DataToggle, IN UINTN TimeOut, IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator, OUT UINT32 *TransferResult)
 Submits synchronous interrupt transfer to an interrupt endpoint of a USB device. More...
 
typedef EFI_STATUS(EFIAPIEFI_USB2_HC_PROTOCOL_ISOCHRONOUS_TRANSFER) (IN EFI_USB2_HC_PROTOCOL *This, IN UINT8 DeviceAddress, IN UINT8 EndPointAddress, IN UINT8 DeviceSpeed, IN UINTN MaximumPacketLength, IN UINT8 DataBuffersNumber, IN OUT VOID *Data[EFI_USB_MAX_ISO_BUFFER_NUM], IN UINTN DataLength, IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator, OUT UINT32 *TransferResult)
 Submits isochronous transfer to an isochronous endpoint of a USB device. More...
 
typedef EFI_STATUS(EFIAPIEFI_USB2_HC_PROTOCOL_ASYNC_ISOCHRONOUS_TRANSFER) (IN EFI_USB2_HC_PROTOCOL *This, IN UINT8 DeviceAddress, IN UINT8 EndPointAddress, IN UINT8 DeviceSpeed, IN UINTN MaximumPacketLength, IN UINT8 DataBuffersNumber, IN OUT VOID *Data[EFI_USB_MAX_ISO_BUFFER_NUM], IN UINTN DataLength, IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator, IN EFI_ASYNC_USB_TRANSFER_CALLBACK IsochronousCallBack, IN VOID *Context OPTIONAL)
 Submits nonblocking isochronous transfer to an isochronous endpoint of a USB device. More...
 
typedef EFI_STATUS(EFIAPIEFI_USB2_HC_PROTOCOL_GET_ROOTHUB_PORT_STATUS) (IN EFI_USB2_HC_PROTOCOL *This, IN UINT8 PortNumber, OUT EFI_USB_PORT_STATUS *PortStatus)
 Retrieves the current status of a USB root hub port. More...
 
typedef EFI_STATUS(EFIAPIEFI_USB2_HC_PROTOCOL_SET_ROOTHUB_PORT_FEATURE) (IN EFI_USB2_HC_PROTOCOL *This, IN UINT8 PortNumber, IN EFI_USB_PORT_FEATURE PortFeature)
 Sets a feature for the specified root hub port. More...
 
typedef EFI_STATUS(EFIAPIEFI_USB2_HC_PROTOCOL_CLEAR_ROOTHUB_PORT_FEATURE) (IN EFI_USB2_HC_PROTOCOL *This, IN UINT8 PortNumber, IN EFI_USB_PORT_FEATURE PortFeature)
 Clears a feature for the specified root hub port. More...
 

Enumerations

enum  EFI_USB_PORT_FEATURE {
  EfiUsbPortEnable = 1, EfiUsbPortSuspend = 2, EfiUsbPortReset = 4, EfiUsbPortPower = 8,
  EfiUsbPortOwner = 13, EfiUsbPortConnectChange = 16, EfiUsbPortEnableChange = 17, EfiUsbPortSuspendChange = 18,
  EfiUsbPortOverCurrentChange = 19, EfiUsbPortResetChange = 20
}
 Usb port features value Each value indicates its bit index in the port status and status change bitmaps, if combines these two bitmaps into a 32-bit bitmap. More...
 
enum  EFI_USB_HC_STATE { EfiUsbHcStateHalt, EfiUsbHcStateOperational, EfiUsbHcStateSuspend, EfiUsbHcStateMaximum }
 Enumration value for status of USB HC. More...
 

Functions

 FILE_LICENCE (BSD2_PATENT)
 

Variables

EFI_GUID gEfiUsb2HcProtocolGuid
 

Detailed Description

EFI_USB2_HC_PROTOCOL as defined in UEFI 2.0.

The USB Host Controller Protocol is used by code, typically USB bus drivers, running in the EFI boot services environment, to perform data transactions over a USB bus. In addition, it provides an abstraction for the root hub of the USB bus.

Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file Usb2HostController.h.

Macro Definition Documentation

◆ EFI_USB2_HC_PROTOCOL_GUID

#define EFI_USB2_HC_PROTOCOL_GUID
Value:
{ \
0x3e745226, 0x9818, 0x45b6, {0xa2, 0xac, 0xd7, 0xcd, 0xe, 0x8b, 0xa2, 0xbc } \
}

Definition at line 19 of file Usb2HostController.h.

◆ USB_PORT_STAT_CONNECTION

#define USB_PORT_STAT_CONNECTION   0x0001

EFI_USB_PORT_STATUS.PortStatus bit definition.

Definition at line 37 of file Usb2HostController.h.

◆ USB_PORT_STAT_ENABLE

#define USB_PORT_STAT_ENABLE   0x0002

Definition at line 38 of file Usb2HostController.h.

◆ USB_PORT_STAT_SUSPEND

#define USB_PORT_STAT_SUSPEND   0x0004

Definition at line 39 of file Usb2HostController.h.

◆ USB_PORT_STAT_OVERCURRENT

#define USB_PORT_STAT_OVERCURRENT   0x0008

Definition at line 40 of file Usb2HostController.h.

◆ USB_PORT_STAT_RESET

#define USB_PORT_STAT_RESET   0x0010

Definition at line 41 of file Usb2HostController.h.

◆ USB_PORT_STAT_POWER

#define USB_PORT_STAT_POWER   0x0100

Definition at line 42 of file Usb2HostController.h.

◆ USB_PORT_STAT_LOW_SPEED

#define USB_PORT_STAT_LOW_SPEED   0x0200

Definition at line 43 of file Usb2HostController.h.

◆ USB_PORT_STAT_HIGH_SPEED

#define USB_PORT_STAT_HIGH_SPEED   0x0400

Definition at line 44 of file Usb2HostController.h.

◆ USB_PORT_STAT_SUPER_SPEED

#define USB_PORT_STAT_SUPER_SPEED   0x0800

Definition at line 45 of file Usb2HostController.h.

◆ USB_PORT_STAT_OWNER

#define USB_PORT_STAT_OWNER   0x2000

Definition at line 46 of file Usb2HostController.h.

◆ USB_PORT_STAT_C_CONNECTION

#define USB_PORT_STAT_C_CONNECTION   0x0001

EFI_USB_PORT_STATUS.PortChangeStatus bit definition.

Definition at line 51 of file Usb2HostController.h.

◆ USB_PORT_STAT_C_ENABLE

#define USB_PORT_STAT_C_ENABLE   0x0002

Definition at line 52 of file Usb2HostController.h.

◆ USB_PORT_STAT_C_SUSPEND

#define USB_PORT_STAT_C_SUSPEND   0x0004

Definition at line 53 of file Usb2HostController.h.

◆ USB_PORT_STAT_C_OVERCURRENT

#define USB_PORT_STAT_C_OVERCURRENT   0x0008

Definition at line 54 of file Usb2HostController.h.

◆ USB_PORT_STAT_C_RESET

#define USB_PORT_STAT_C_RESET   0x0010

Definition at line 55 of file Usb2HostController.h.

◆ EFI_USB_SPEED_FULL

#define EFI_USB_SPEED_FULL   0x0000

12 Mb/s, USB 1.1 OHCI and UHCI HC.

Definition at line 75 of file Usb2HostController.h.

◆ EFI_USB_SPEED_LOW

#define EFI_USB_SPEED_LOW   0x0001

1 Mb/s, USB 1.1 OHCI and UHCI HC.

Definition at line 76 of file Usb2HostController.h.

◆ EFI_USB_SPEED_HIGH

#define EFI_USB_SPEED_HIGH   0x0002

480 Mb/s, USB 2.0 EHCI HC.

Definition at line 77 of file Usb2HostController.h.

◆ EFI_USB_SPEED_SUPER

#define EFI_USB_SPEED_SUPER   0x0003

4.8 Gb/s, USB 3.0 XHCI HC.

Definition at line 78 of file Usb2HostController.h.

◆ EFI_USB_HC_RESET_GLOBAL

#define EFI_USB_HC_RESET_GLOBAL   0x0001

Definition at line 113 of file Usb2HostController.h.

◆ EFI_USB_HC_RESET_HOST_CONTROLLER

#define EFI_USB_HC_RESET_HOST_CONTROLLER   0x0002

Definition at line 114 of file Usb2HostController.h.

◆ EFI_USB_HC_RESET_GLOBAL_WITH_DEBUG

#define EFI_USB_HC_RESET_GLOBAL_WITH_DEBUG   0x0004

Definition at line 115 of file Usb2HostController.h.

◆ EFI_USB_HC_RESET_HOST_WITH_DEBUG

#define EFI_USB_HC_RESET_HOST_WITH_DEBUG   0x0008

Definition at line 116 of file Usb2HostController.h.

◆ EFI_USB_MAX_BULK_BUFFER_NUM

#define EFI_USB_MAX_BULK_BUFFER_NUM   10

Definition at line 262 of file Usb2HostController.h.

◆ EFI_USB_MAX_ISO_BUFFER_NUM

#define EFI_USB_MAX_ISO_BUFFER_NUM   7

Definition at line 405 of file Usb2HostController.h.

◆ EFI_USB_MAX_ISO_BUFFER_NUM1

#define EFI_USB_MAX_ISO_BUFFER_NUM1   2

Definition at line 406 of file Usb2HostController.h.

Typedef Documentation

◆ EFI_USB2_HC_PROTOCOL

Forward reference for pure ANSI compatability.

Definition at line 27 of file Usb2HostController.h.

◆ EFI_USB2_HC_PROTOCOL_GET_CAPABILITY

typedef EFI_STATUS(EFIAPI * EFI_USB2_HC_PROTOCOL_GET_CAPABILITY) (IN EFI_USB2_HC_PROTOCOL *This, OUT UINT8 *MaxSpeed, OUT UINT8 *PortNumber, OUT UINT8 *Is64BitCapable)

Retrieves the Host Controller capabilities.

Parameters
ThisA pointer to the EFI_USB2_HC_PROTOCOL instance.
MaxSpeedHost controller data transfer speed.
PortNumberNumber of the root hub ports.
Is64BitCapableTRUE if controller supports 64-bit memory addressing, FALSE otherwise.
Return values
EFI_SUCCESSThe host controller capabilities were retrieved successfully.
EFI_INVALID_PARAMETEROne of the input args was NULL.
EFI_DEVICE_ERRORAn error was encountered while attempting to retrieve the capabilities.

Definition at line 106 of file Usb2HostController.h.

◆ EFI_USB2_HC_PROTOCOL_RESET

typedef EFI_STATUS(EFIAPI * EFI_USB2_HC_PROTOCOL_RESET) (IN EFI_USB2_HC_PROTOCOL *This, IN UINT16 Attributes)

Provides software reset for the USB host controller.

Parameters
ThisA pointer to the EFI_USB2_HC_PROTOCOL instance.
AttributesA bit mask of the reset operation to perform.
Return values
EFI_SUCCESSThe reset operation succeeded.
EFI_INVALID_PARAMETERAttributes is not valid.
EFI_UNSUPPORTEDThe type of reset specified by Attributes is not currently supported by the host controller hardware.
EFI_ACCESS_DENIEDReset operation is rejected due to the debug port being configured and active; only EFI_USB_HC_RESET_GLOBAL_WITH_DEBUG or EFI_USB_HC_RESET_HOST_WITH_DEBUG reset Attributes can be used to perform reset operation for this host controller.
EFI_DEVICE_ERRORAn error was encountered while attempting to retrieve the capabilities.

Definition at line 138 of file Usb2HostController.h.

◆ EFI_USB2_HC_PROTOCOL_GET_STATE

typedef EFI_STATUS(EFIAPI * EFI_USB2_HC_PROTOCOL_GET_STATE) (IN EFI_USB2_HC_PROTOCOL *This, OUT EFI_USB_HC_STATE *State)

Retrieves current state of the USB host controller.

Parameters
ThisA pointer to the EFI_USB2_HC_PROTOCOL instance.
StateA pointer to the EFI_USB_HC_STATE data structure that indicates current state of the USB host controller.
Return values
EFI_SUCCESSThe state information of the host controller was returned in State.
EFI_INVALID_PARAMETERState is NULL.
EFI_DEVICE_ERRORAn error was encountered while attempting to retrieve the host controller's current state.

Definition at line 193 of file Usb2HostController.h.

◆ EFI_USB2_HC_PROTOCOL_SET_STATE

typedef EFI_STATUS(EFIAPI * EFI_USB2_HC_PROTOCOL_SET_STATE) (IN EFI_USB2_HC_PROTOCOL *This, IN EFI_USB_HC_STATE State)

Sets the USB host controller to a specific state.

Parameters
ThisA pointer to the EFI_USB2_HC_PROTOCOL instance.
StateIndicates the state of the host controller that will be set.
Return values
EFI_SUCCESSThe USB host controller was successfully placed in the state specified by State.
EFI_INVALID_PARAMETERState is not valid.
EFI_DEVICE_ERRORFailed to set the state specified by State due to device error.

Definition at line 212 of file Usb2HostController.h.

◆ EFI_USB2_HC_PROTOCOL_CONTROL_TRANSFER

typedef EFI_STATUS(EFIAPI * EFI_USB2_HC_PROTOCOL_CONTROL_TRANSFER) (IN EFI_USB2_HC_PROTOCOL *This, IN UINT8 DeviceAddress, IN UINT8 DeviceSpeed, IN UINTN MaximumPacketLength, IN EFI_USB_DEVICE_REQUEST *Request, IN EFI_USB_DATA_DIRECTION TransferDirection, IN OUT VOID *Data OPTIONAL, IN OUT UINTN *DataLength OPTIONAL, IN UINTN TimeOut, IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator, OUT UINT32 *TransferResult)

Submits control transfer to a target USB device.

Parameters
ThisA pointer to the EFI_USB2_HC_PROTOCOL instance.
DeviceAddressRepresents the address of the target device on the USB.
DeviceSpeedIndicates device speed.
MaximumPacketLengthIndicates the maximum packet size that the default control transfer endpoint is capable of sending or receiving.
RequestA pointer to the USB device request that will be sent to the USB device.
TransferDirectionSpecifies the data direction for the transfer. There are three values available, EfiUsbDataIn, EfiUsbDataOut and EfiUsbNoData.
DataA pointer to the buffer of data that will be transmitted to USB device or received from USB device.
DataLengthOn input, indicates the size, in bytes, of the data buffer specified by Data. On output, indicates the amount of data actually transferred.
TimeOutIndicates the maximum time, in milliseconds, which the transfer is allowed to complete.
TranslatorA pointer to the transaction translator data.
TransferResultA pointer to the detailed result information generated by this control transfer.
Return values
EFI_SUCCESSThe control transfer was completed successfully.
EFI_INVALID_PARAMETERSome parameters are invalid.
EFI_OUT_OF_RESOURCESThe control transfer could not be completed due to a lack of resources.
EFI_TIMEOUTThe control transfer failed due to timeout.
EFI_DEVICE_ERRORThe control transfer failed due to host controller or device error. Caller should check TransferResult for detailed error information.

Definition at line 248 of file Usb2HostController.h.

◆ EFI_USB2_HC_PROTOCOL_BULK_TRANSFER

typedef EFI_STATUS(EFIAPI * EFI_USB2_HC_PROTOCOL_BULK_TRANSFER) (IN EFI_USB2_HC_PROTOCOL *This, IN UINT8 DeviceAddress, IN UINT8 EndPointAddress, IN UINT8 DeviceSpeed, IN UINTN MaximumPacketLength, IN UINT8 DataBuffersNumber, IN OUT VOID *Data[EFI_USB_MAX_BULK_BUFFER_NUM], IN OUT UINTN *DataLength, IN OUT UINT8 *DataToggle, IN UINTN TimeOut, IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator, OUT UINT32 *TransferResult)

Submits bulk transfer to a bulk endpoint of a USB device.

Parameters
ThisA pointer to the EFI_USB2_HC_PROTOCOL instance.
DeviceAddressRepresents the address of the target device on the USB.
EndPointAddressThe combination of an endpoint number and an endpoint direction of the target USB device.
DeviceSpeedIndicates device speed.
MaximumPacketLengthIndicates the maximum packet size the target endpoint is capable of sending or receiving.
DataBuffersNumberNumber of data buffers prepared for the transfer.
DataArray of pointers to the buffers of data that will be transmitted to USB device or received from USB device.
DataLengthWhen input, indicates the size, in bytes, of the data buffers specified by Data. When output, indicates the actually transferred data size.
DataToggleA pointer to the data toggle value.
TimeOutIndicates the maximum time, in milliseconds, which the transfer is allowed to complete.
TranslatorA pointer to the transaction translator data.
TransferResultA pointer to the detailed result information of the bulk transfer.
Return values
EFI_SUCCESSThe bulk transfer was completed successfully.
EFI_INVALID_PARAMETERSome parameters are invalid.
EFI_OUT_OF_RESOURCESThe bulk transfer could not be submitted due to a lack of resources.
EFI_TIMEOUTThe bulk transfer failed due to timeout.
EFI_DEVICE_ERRORThe bulk transfer failed due to host controller or device error. Caller should check TransferResult for detailed error information.

Definition at line 295 of file Usb2HostController.h.

◆ EFI_USB2_HC_PROTOCOL_ASYNC_INTERRUPT_TRANSFER

typedef EFI_STATUS(EFIAPI * EFI_USB2_HC_PROTOCOL_ASYNC_INTERRUPT_TRANSFER) (IN EFI_USB2_HC_PROTOCOL *This, IN UINT8 DeviceAddress, IN UINT8 EndPointAddress, IN UINT8 DeviceSpeed, IN UINTN MaxiumPacketLength, IN BOOLEAN IsNewTransfer, IN OUT UINT8 *DataToggle, IN UINTN PollingInterval OPTIONAL, IN UINTN DataLength OPTIONAL, IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator OPTIONAL, IN EFI_ASYNC_USB_TRANSFER_CALLBACK CallBackFunction OPTIONAL, IN VOID *Context OPTIONAL)

Submits an asynchronous interrupt transfer to an interrupt endpoint of a USB device.

Translator parameter doesn't exist in UEFI2.0 spec, but it will be updated in the following specification version.

Parameters
ThisA pointer to the EFI_USB2_HC_PROTOCOL instance.
DeviceAddressRepresents the address of the target device on the USB.
EndPointAddressThe combination of an endpoint number and an endpoint direction of the target USB device.
DeviceSpeedIndicates device speed.
MaximumPacketLengthIndicates the maximum packet size the target endpoint is capable of sending or receiving.
IsNewTransferIf TRUE, an asynchronous interrupt pipe is built between the host and the target interrupt endpoint. If FALSE, the specified asynchronous interrupt pipe is canceled. If TRUE, and an interrupt transfer exists for the target end point, then EFI_INVALID_PARAMETER is returned.
DataToggleA pointer to the data toggle value.
PollingIntervalIndicates the interval, in milliseconds, that the asynchronous interrupt transfer is polled.
DataLengthIndicates the length of data to be received at the rate specified by PollingInterval from the target asynchronous interrupt endpoint.
TranslatorA pointr to the transaction translator data.
CallBackFunctionThe Callback function. This function is called at the rate specified by PollingInterval.
ContextThe context that is passed to the CallBackFunction. This is an optional parameter and may be NULL.
Return values
EFI_SUCCESSThe asynchronous interrupt transfer request has been successfully submitted or canceled.
EFI_INVALID_PARAMETERSome parameters are invalid.
EFI_OUT_OF_RESOURCESThe request could not be completed due to a lack of resources.

Definition at line 344 of file Usb2HostController.h.

◆ EFI_USB2_HC_PROTOCOL_SYNC_INTERRUPT_TRANSFER

typedef EFI_STATUS(EFIAPI * EFI_USB2_HC_PROTOCOL_SYNC_INTERRUPT_TRANSFER) (IN EFI_USB2_HC_PROTOCOL *This, IN UINT8 DeviceAddress, IN UINT8 EndPointAddress, IN UINT8 DeviceSpeed, IN UINTN MaximumPacketLength, IN OUT VOID *Data, IN OUT UINTN *DataLength, IN OUT UINT8 *DataToggle, IN UINTN TimeOut, IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator, OUT UINT32 *TransferResult)

Submits synchronous interrupt transfer to an interrupt endpoint of a USB device.

Translator parameter doesn't exist in UEFI2.0 spec, but it will be updated in the following specification version.

Parameters
ThisA pointer to the EFI_USB2_HC_PROTOCOL instance.
DeviceAddressRepresents the address of the target device on the USB.
EndPointAddressThe combination of an endpoint number and an endpoint direction of the target USB device.
DeviceSpeedIndicates device speed.
MaximumPacketLengthIndicates the maximum packet size the target endpoint is capable of sending or receiving.
DataA pointer to the buffer of data that will be transmitted to USB device or received from USB device.
DataLengthOn input, the size, in bytes, of the data buffer specified by Data. On output, the number of bytes transferred.
DataToggleA pointer to the data toggle value.
TimeOutIndicates the maximum time, in milliseconds, which the transfer is allowed to complete.
TranslatorA pointr to the transaction translator data.
TransferResultA pointer to the detailed result information from the synchronous interrupt transfer.
Return values
EFI_SUCCESSThe synchronous interrupt transfer was completed successfully.
EFI_INVALID_PARAMETERSome parameters are invalid.
EFI_OUT_OF_RESOURCESThe synchronous interrupt transfer could not be submitted due to a lack of resources.
EFI_TIMEOUTThe synchronous interrupt transfer failed due to timeout.
EFI_DEVICE_ERRORThe synchronous interrupt transfer failed due to host controller or device error. Caller should check TransferResult for detailed error information.

Definition at line 391 of file Usb2HostController.h.

◆ EFI_USB2_HC_PROTOCOL_ISOCHRONOUS_TRANSFER

typedef EFI_STATUS(EFIAPI * EFI_USB2_HC_PROTOCOL_ISOCHRONOUS_TRANSFER) (IN EFI_USB2_HC_PROTOCOL *This, IN UINT8 DeviceAddress, IN UINT8 EndPointAddress, IN UINT8 DeviceSpeed, IN UINTN MaximumPacketLength, IN UINT8 DataBuffersNumber, IN OUT VOID *Data[EFI_USB_MAX_ISO_BUFFER_NUM], IN UINTN DataLength, IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator, OUT UINT32 *TransferResult)

Submits isochronous transfer to an isochronous endpoint of a USB device.

This function is used to submit isochronous transfer to a target endpoint of a USB device. The target endpoint is specified by DeviceAddressand EndpointAddress. Isochronous transfers are used when working with isochronous date. It provides periodic, continuous communication between the host and a device. Isochronous transfers can beused only by full-speed, high-speed, and super-speed devices.

High-speed isochronous transfers can be performed using multiple data buffers. The number of buffers that are actually prepared for the transfer is specified by DataBuffersNumber. For full-speed isochronous transfers this value is ignored.

Data represents a list of pointers to the data buffers. For full-speed isochronous transfers only the data pointed by Data[0]shall be used. For high-speed isochronous transfers and for the split transactions depending on DataLengththere several data buffers canbe used. For the high-speed isochronous transfers the total number of buffers must not exceed EFI_USB_MAX_ISO_BUFFER_NUM.

For split transactions performed on full-speed device by high-speed host controller the total number of buffers is limited to EFI_USB_MAX_ISO_BUFFER_NUM1. If the isochronous transfer is successful, then EFI_SUCCESSis returned. The isochronous transfer is designed to be completed within one USB frame time, if it cannot be completed, EFI_TIMEOUT is returned. If an error other than timeout occurs during the USB transfer, then EFI_DEVICE_ERROR is returned and the detailed status code will be returned in TransferResult.

EFI_INVALID_PARAMETERis returned if one of the following conditionsis satisfied:

  • Data is NULL.
  • DataLength is 0.
  • DeviceSpeed is not one of the supported values listed above.
  • MaximumPacketLength is invalid. MaximumPacketLength must be 1023 or less for full-speed devices, and 1024 or less for high-speed and super-speed devices.
  • TransferResult is NULL.
Parameters
ThisA pointer to the EFI_USB2_HC_PROTOCOL instance.
DeviceAddressRepresents the address of the target device on the USB.
EndPointAddressThe combination of an endpoint number and an endpoint direction of the target USB device.
DeviceSpeedIndicates device speed. The supported values are EFI_USB_SPEED_FULL, EFI_USB_SPEED_HIGH, or EFI_USB_SPEED_SUPER.
MaximumPacketLengthIndicates the maximum packet size the target endpoint is capable of sending or receiving.
DataBuffersNumberNumber of data buffers prepared for the transfer.
DataArray of pointers to the buffers of data that will be transmitted to USB device or received from USB device.
DataLengthSpecifies the length, in bytes, of the data to be sent to or received from the USB device.
TranslatorA pointer to the transaction translator data.
TransferResultA pointer to the detailed result information of the isochronous transfer.
Return values
EFI_SUCCESSThe isochronous transfer was completed successfully.
EFI_INVALID_PARAMETERSome parameters are invalid.
EFI_OUT_OF_RESOURCESThe isochronous transfer could not be submitted due to a lack of resources.
EFI_TIMEOUTThe isochronous transfer cannot be completed within the one USB frame time.
EFI_DEVICE_ERRORThe isochronous transfer failed due to host controller or device error. Caller should check TransferResult for detailed error information.

Definition at line 467 of file Usb2HostController.h.

◆ EFI_USB2_HC_PROTOCOL_ASYNC_ISOCHRONOUS_TRANSFER

typedef EFI_STATUS(EFIAPI * EFI_USB2_HC_PROTOCOL_ASYNC_ISOCHRONOUS_TRANSFER) (IN EFI_USB2_HC_PROTOCOL *This, IN UINT8 DeviceAddress, IN UINT8 EndPointAddress, IN UINT8 DeviceSpeed, IN UINTN MaximumPacketLength, IN UINT8 DataBuffersNumber, IN OUT VOID *Data[EFI_USB_MAX_ISO_BUFFER_NUM], IN UINTN DataLength, IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator, IN EFI_ASYNC_USB_TRANSFER_CALLBACK IsochronousCallBack, IN VOID *Context OPTIONAL)

Submits nonblocking isochronous transfer to an isochronous endpoint of a USB device.

This is an asynchronous type of USB isochronous transfer. If the caller submits a USB isochronous transfer request through this function, this function will return immediately.

When the isochronous transfer completes, the IsochronousCallbackfunction will be triggered, the caller can know the transfer results. If the transfer is successful, the caller can get the data received or sent in this callback function.

The target endpoint is specified by DeviceAddressand EndpointAddress. Isochronous transfers are used when working with isochronous date. It provides periodic, continuous communication between the host and a device. Isochronous transfers can be used only by full-speed, high-speed, and super-speed devices.

High-speed isochronous transfers can be performed using multiple data buffers. The number of buffers that are actually prepared for the transfer is specified by DataBuffersNumber. For full-speed isochronous transfers this value is ignored.

Data represents a list of pointers to the data buffers. For full-speed isochronous transfers only the data pointed by Data[0] shall be used. For high-speed isochronous transfers and for the split transactions depending on DataLength there several data buffers can be used. For the high-speed isochronous transfers the total number of buffers must not exceed EFI_USB_MAX_ISO_BUFFER_NUM.

For split transactions performed on full-speed device by high-speed host controller the total number of buffers is limited to EFI_USB_MAX_ISO_BUFFER_NUM1.

EFI_INVALID_PARAMETER is returned if one of the following conditionsis satisfied:

  • Data is NULL.
  • DataLength is 0.
  • DeviceSpeed is not one of the supported values listed above.
  • MaximumPacketLength is invalid. MaximumPacketLength must be 1023 or less for full-speed devices and 1024 or less for high-speed and super-speed devices.
Parameters
ThisA pointer to the EFI_USB2_HC_PROTOCOL instance.
DeviceAddressRepresents the address of the target device on the USB.
EndPointAddressThe combination of an endpoint number and an endpoint direction of the target USB device.
DeviceSpeedIndicates device speed. The supported values are EFI_USB_SPEED_FULL, EFI_USB_SPEED_HIGH, or EFI_USB_SPEED_SUPER.
MaximumPacketLengthIndicates the maximum packet size the target endpoint is capable of sending or receiving.
DataBuffersNumberNumber of data buffers prepared for the transfer.
DataArray of pointers to the buffers of data that will be transmitted to USB device or received from USB device.
DataLengthSpecifies the length, in bytes, of the data to be sent to or received from the USB device.
TranslatorA pointer to the transaction translator data.
IsochronousCallbackThe Callback function. This function is called if the requested isochronous transfer is completed.
ContextData passed to the IsochronousCallback function. This is an optional parameter and may be NULL.
Return values
EFI_SUCCESSThe asynchronous isochronous transfer request has been successfully submitted or canceled.
EFI_INVALID_PARAMETERSome parameters are invalid.
EFI_OUT_OF_RESOURCESThe asynchronous isochronous transfer could not be submitted due to a lack of resources.

Definition at line 542 of file Usb2HostController.h.

◆ EFI_USB2_HC_PROTOCOL_GET_ROOTHUB_PORT_STATUS

typedef EFI_STATUS(EFIAPI * EFI_USB2_HC_PROTOCOL_GET_ROOTHUB_PORT_STATUS) (IN EFI_USB2_HC_PROTOCOL *This, IN UINT8 PortNumber, OUT EFI_USB_PORT_STATUS *PortStatus)

Retrieves the current status of a USB root hub port.

Parameters
ThisA pointer to the EFI_USB2_HC_PROTOCOL instance.
PortNumberSpecifies the root hub port from which the status is to be retrieved. This value is zero based.
PortStatusA pointer to the current port status bits and port status change bits.
Return values
EFI_SUCCESSThe status of the USB root hub port specified by PortNumber was returned in PortStatus.
EFI_INVALID_PARAMETERPortNumber is invalid.

Definition at line 571 of file Usb2HostController.h.

◆ EFI_USB2_HC_PROTOCOL_SET_ROOTHUB_PORT_FEATURE

typedef EFI_STATUS(EFIAPI * EFI_USB2_HC_PROTOCOL_SET_ROOTHUB_PORT_FEATURE) (IN EFI_USB2_HC_PROTOCOL *This, IN UINT8 PortNumber, IN EFI_USB_PORT_FEATURE PortFeature)

Sets a feature for the specified root hub port.

Parameters
ThisA pointer to the EFI_USB2_HC_PROTOCOL instance.
PortNumberSpecifies the root hub port whose feature is requested to be set. This value is zero based.
PortFeatureIndicates the feature selector associated with the feature set request.
Return values
EFI_SUCCESSThe feature specified by PortFeature was set for the USB root hub port specified by PortNumber.
EFI_INVALID_PARAMETERPortNumber is invalid or PortFeature is invalid for this function.

Definition at line 592 of file Usb2HostController.h.

◆ EFI_USB2_HC_PROTOCOL_CLEAR_ROOTHUB_PORT_FEATURE

typedef EFI_STATUS(EFIAPI * EFI_USB2_HC_PROTOCOL_CLEAR_ROOTHUB_PORT_FEATURE) (IN EFI_USB2_HC_PROTOCOL *This, IN UINT8 PortNumber, IN EFI_USB_PORT_FEATURE PortFeature)

Clears a feature for the specified root hub port.

Parameters
ThisA pointer to the EFI_USB2_HC_PROTOCOL instance.
PortNumberSpecifies the root hub port whose feature is requested to be cleared. This value is zero based.
PortFeatureIndicates the feature selector associated with the feature clear request.
Return values
EFI_SUCCESSThe feature specified by PortFeature was cleared for the USB root hub port specified by PortNumber.
EFI_INVALID_PARAMETERPortNumber is invalid or PortFeature is invalid for this function.

Definition at line 613 of file Usb2HostController.h.

Enumeration Type Documentation

◆ EFI_USB_PORT_FEATURE

Usb port features value Each value indicates its bit index in the port status and status change bitmaps, if combines these two bitmaps into a 32-bit bitmap.

Enumerator
EfiUsbPortEnable 
EfiUsbPortSuspend 
EfiUsbPortReset 
EfiUsbPortPower 
EfiUsbPortOwner 
EfiUsbPortConnectChange 
EfiUsbPortEnableChange 
EfiUsbPortSuspendChange 
EfiUsbPortOverCurrentChange 
EfiUsbPortResetChange 

Definition at line 62 of file Usb2HostController.h.

◆ EFI_USB_HC_STATE

Enumration value for status of USB HC.

Enumerator
EfiUsbHcStateHalt 

The host controller is in halt state.

No USB transactions can occur while in this state. The host controller can enter this state for three reasons: 1) After host controller hardware reset. 2) Explicitly set by software. 3) Triggered by a fatal error such as consistency check failure.

EfiUsbHcStateOperational 

The host controller is in an operational state.

When in this state, the host controller can execute bus traffic. This state must be explicitly set to enable the USB bus traffic.

EfiUsbHcStateSuspend 

The host controller is in the suspend state.

No USB transactions can occur while in this state. The host controller enters this state for the following reasons: 1) Explicitly set by software. 2) Triggered when there is no bus traffic for 3 microseconds.

EfiUsbHcStateMaximum 

Maximum value for enumration value of HC status.

Definition at line 146 of file Usb2HostController.h.

146  {
147  EfiUsbHcStateHalt, ///< The host controller is in halt
148  ///< state. No USB transactions can occur
149  ///< while in this state. The host
150  ///< controller can enter this state for
151  ///< three reasons: 1) After host
152  ///< controller hardware reset. 2)
153  ///< Explicitly set by software. 3)
154  ///< Triggered by a fatal error such as
155  ///< consistency check failure.
156 
157  EfiUsbHcStateOperational, ///< The host controller is in an
158  ///< operational state. When in
159  ///< this state, the host
160  ///< controller can execute bus
161  ///< traffic. This state must be
162  ///< explicitly set to enable the
163  ///< USB bus traffic.
164 
165  EfiUsbHcStateSuspend, ///< The host controller is in the
166  ///< suspend state. No USB
167  ///< transactions can occur while in
168  ///< this state. The host controller
169  ///< enters this state for the
170  ///< following reasons: 1) Explicitly
171  ///< set by software. 2) Triggered
172  ///< when there is no bus traffic for
173  ///< 3 microseconds.
174 
175  EfiUsbHcStateMaximum ///< Maximum value for enumration value of HC status.
The host controller is in halt state.
The host controller is in the suspend state.
The host controller is in an operational state.
EFI_USB_HC_STATE
Enumration value for status of USB HC.
Maximum value for enumration value of HC status.

Function Documentation

◆ FILE_LICENCE()

FILE_LICENCE ( BSD2_PATENT  )

Variable Documentation

◆ gEfiUsb2HcProtocolGuid

EFI_GUID gEfiUsb2HcProtocolGuid