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edk2/MdeModulePkg/Include/Ppi/Usb2HostController.h
Michael Kubacki 7a934d0bef MdeModulePkg: Replace include guards with #pragma once 
Replace traditional `#ifndef`/`#define`/`#endif` include guards with
`#pragma` once.

`#pragma once` is a widely supported preprocessor directive that
prevents header files from being included multiple times. It is
supported by all toolchains used to build edk2: GCC, Clang/LLVM, and
MSVC.

Compared to macro-based include guards, `#pragma once`:

- Eliminates the risk of macro name collisions or copy/paste errors
  where two headers inadvertently use the same guard macro.
- Eliminate inconsistency in the way include guard macros are named
  (e.g., some files use `__FILE_H__`, others use `FILE_H_`, etc.).
- Reduces boilerplate (three lines replaced by one).
- Avoids polluting the macro namespace with guard symbols.
- Can improve build times as the preprocessor can skip re-opening the
  file entirely, rather than re-reading it to find the matching
  `#endif` ("multiple-include optimization").
  - Note that some compilers may already optimize traditional include
    guards, by recognzining the idiomatic pattern.

This change is made acknowledging that overall portability of the
code will technically be reduced, as `#pragma once` is not part of the
C/C++ standards.

However, this is considered acceptable given:

1. edk2 already defines a subset of supported compilers in
   BaseTools/Conf/tools_def.template, all of which have supported
   `#pragma once` for over two decades.
2. There have been concerns raised to the project about inconsistent
   include guard naming and potential macro collisions.

Approximate compiler support dates:

- MSVC: Supported since Visual C++ 4.2 (1996)
- GCC: Supported since 3.4 (2004)
  (http://gnu.ist.utl.pt/software/gcc/gcc-3.4/changes.html)
- Clang (LLVM based): Since initial release in 2007

Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
2026-02-23 21:01:28 +00:00

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/** @file
Defines the USB Host Controller PPI that provides I/O services for a USB Host
Controller that may be used to access recovery devices. These interfaces are
modeled on the UEFI 2.3 specification EFI_USB2_HOST_CONTROLLER_PROTOCOL.
Refer to section 16.1 of the UEFI 2.3 Specification for more information on
these interfaces.
Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved. <BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#pragma once
#include <Protocol/Usb2HostController.h>
///
/// Global ID for the PEI_USB2_HOST_CONTROLLER_PPI.
///
#define PEI_USB2_HOST_CONTROLLER_PPI_GUID \
{ \
0xa7d09fe1, 0x74d4, 0x4ba5, { 0x84, 0x7c, 0x12, 0xed, 0x5b, 0x19, 0xad, 0xe4 } \
}
///
/// Forward declaration for the PEI_USB2_HOST_CONTROLLER_PPI.
///
typedef struct _PEI_USB2_HOST_CONTROLLER_PPI PEI_USB2_HOST_CONTROLLER_PPI;
/**
Initiate a USB control transfer using a specific USB Host controller on the USB bus.
@param[in] PeiServices The pointer to the PEI Services Table.
@param[in] This The pointer to this instance of the
PEI_USB2_HOST_CONTROLLER_PPI.
@param[in] DeviceAddress Represents the address of the target device
on the USB.
@param[in] DeviceSpeed Indicates device speed.
@param[in] MaximumPacketLength Indicates the maximum packet size that the
default control transfer
endpoint is capable of sending or receiving.
@param[in] Request A pointer to the USB device request that
will be sent to the USB device.
@param[in] TransferDirection Specifies the data direction for the transfer.
There are three values available:
EfiUsbDataIn, EfiUsbDataOut and EfiUsbNoData.
@param[in,out] Data A pointer to the buffer of data that will
be transmitted to USB device or
received from USB device.
@param[in,out] DataLength On input, indicates the size, in bytes, of
the data buffer specified by Data.
On output, indicates the amount of data
actually transferred.
@param[in] TimeOut Indicates the maximum time, in milliseconds,
that the transfer is allowed to complete.
If Timeout is 0, then the caller must wait for
the function to be completed until EFI_SUCCESS
or EFI_DEVICE_ERROR is returned.
@param[in] Translator A pointer to the transaction translator data.
@param[out] TransferResult A pointer to the detailed result information
generated by this control transfer.
@retval EFI_SUCCESS The control transfer was completed successfully.
@retval EFI_DEVICE_ERROR The control transfer failed due to host controller
or device error.
@retval EFI_INVALID_PARAMETER Some parameters are invalid.
@retval EFI_OUT_OF_RESOURCES The control transfer could not be completed due to a lack of resources.
@retval EFI_TIMEOUT The control transfer failed due to timeout.
**/
typedef
EFI_STATUS
(EFIAPI *PEI_USB2_HOST_CONTROLLER_CONTROL_TRANSFER)(
IN EFI_PEI_SERVICES **PeiServices,
IN PEI_USB2_HOST_CONTROLLER_PPI *This,
IN UINT8 DeviceAddress,
IN UINT8 DeviceSpeed,
IN UINTN MaximumPacketLength,
IN 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
);
/**
Initiate a USB bulk transfer using a specific USB Host controller on the USB bus.
@param[in] PeiServices The pointer to the PEI Services Table.
@param[in] This The pointer to this instance of the
PEI_USB2_HOST_CONTROLLER_PPI.
@param[in] DeviceAddress Represents the address of the target device
on the USB.
@param[in] EndPointAddress The combination of an endpoint number and
an endpoint direction of the target USB device.
@param[in] DeviceSpeed Indicates device speed.
@param[in] MaximumPacketLength Indicates the maximum packet size the target
endpoint is capable of sending or receiving.
@param[in,out] Data Array of pointers to the buffers of data
that will be transmitted to USB device or
received from USB device.
@param[in,out] DataLength When input, indicates the size, in bytes, of
the data buffers specified by Data. When output,
indicates the data size actually transferred.
@param[in,out] DataToggle A pointer to the data toggle value.
@param[in] TimeOut Indicates the maximum time, in milliseconds,
in which the transfer is allowed to complete.
If Timeout is 0, then the caller must wait for
the function to be completed until EFI_SUCCESS
or EFI_DEVICE_ERROR is returned.
@param[in] Translator A pointer to the transaction translator data.
@param[out] TransferResult A pointer to the detailed result information
of the bulk transfer.
@retval EFI_SUCCESS The bulk transfer was completed successfully.
@retval EFI_DEVICE_ERROR The bulk transfer failed due to host controller or device error.
Caller should check TransferResult for detailed error information.
@retval EFI_INVALID_PARAMETER Some parameters are invalid.
@retval EFI_OUT_OF_RESOURCES The bulk transfer could not be submitted due to a lack of resources.
@retval EFI_TIMEOUT The bulk transfer failed due to timeout.
**/
typedef
EFI_STATUS
(EFIAPI *PEI_USB2_HOST_CONTROLLER_BULK_TRANSFER)(
IN EFI_PEI_SERVICES **PeiServices,
IN PEI_USB2_HOST_CONTROLLER_PPI *This,
IN UINT8 DeviceAddress,
IN UINT8 EndPointAddress,
IN UINT8 DeviceSpeed,
IN UINTN MaximumPacketLength,
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
);
/**
Retrieves the number of root hub ports.
@param[in] PeiServices The pointer to the PEI Services Table.
@param[in] This The pointer to this instance of the
PEI_USB2_HOST_CONTROLLER_PPI.
@param[out] PortNumber The pointer to the number of the root hub ports.
@retval EFI_SUCCESS The port number was retrieved successfully.
@retval EFI_INVALID_PARAMETER PortNumber is NULL.
**/
typedef
EFI_STATUS
(EFIAPI *PEI_USB2_HOST_CONTROLLER_GET_ROOTHUB_PORT_NUMBER)(
IN EFI_PEI_SERVICES **PeiServices,
IN PEI_USB2_HOST_CONTROLLER_PPI *This,
OUT UINT8 *PortNumber
);
/**
Retrieves the current status of a USB root hub port.
@param[in] PeiServices The pointer to the PEI Services Table.
@param[in] This The pointer to this instance of the
PEI_USB2_HOST_CONTROLLER_PPI.
@param[in] PortNumber Specifies the root hub port from which the status is
to be retrieved.
This value is zero based.
@param[out] PortStatus A pointer to the current port status bits and port
status change bits.
@retval EFI_SUCCESS The status of the USB root hub port specified by
PortNumber was returned in PortStatus.
@retval EFI_INVALID_PARAMETER PortNumber is invalid.
**/
typedef
EFI_STATUS
(EFIAPI *PEI_USB2_HOST_CONTROLLER_GET_ROOTHUB_PORT_STATUS)(
IN EFI_PEI_SERVICES **PeiServices,
IN PEI_USB2_HOST_CONTROLLER_PPI *This,
IN UINT8 PortNumber,
OUT EFI_USB_PORT_STATUS *PortStatus
);
/**
Sets a feature for the specified root hub port.
@param[in] PeiServices The pointer to the PEI Services Table.
@param[in] This The pointer to this instance of the
PEI_USB2_HOST_CONTROLLER_PPI.
@param[in] PortNumber Specifies the root hub port whose feature is requested
to be set. This value is zero based.
@param[in] PortFeature Indicates the feature selector associated with the feature
set request.
@retval EFI_SUCCESS The feature specified by PortFeature was set for
the USB root hub port specified by PortNumber.
@retval EFI_INVALID_PARAMETER PortNumber is invalid or PortFeature is invalid
for this function.
@retval EFI_TIMEOUT The time out occurred
**/
typedef
EFI_STATUS
(EFIAPI *PEI_USB2_HOST_CONTROLLER_SET_ROOTHUB_PORT_FEATURE)(
IN EFI_PEI_SERVICES **PeiServices,
IN PEI_USB2_HOST_CONTROLLER_PPI *This,
IN UINT8 PortNumber,
IN EFI_USB_PORT_FEATURE PortFeature
);
/**
Clears a feature for the specified root hub port.
@param[in] PeiServices The pointer to the PEI Services Table.
@param[in] This The pointer to this instance of the
PEI_USB2_HOST_CONTROLLER_PPI.
@param[in] PortNumber Specifies the root hub port whose feature is
requested to be cleared.
@param[in] PortFeature Indicates the feature selector associated with the
feature clear request.
@return EFI_SUCCESS The feature specified by PortFeature was cleared
for the USB root hub port specified by PortNumber.
@return EFI_INVALID_PARAMETER PortNumber is invalid or PortFeature is invalid.
**/
typedef
EFI_STATUS
(EFIAPI *PEI_USB2_HOST_CONTROLLER_CLEAR_ROOTHUB_PORT_FEATURE)(
IN EFI_PEI_SERVICES **PeiServices,
IN PEI_USB2_HOST_CONTROLLER_PPI *This,
IN UINT8 PortNumber,
IN EFI_USB_PORT_FEATURE PortFeature
);
///
/// This PPI contains a set of services to interact with the USB host controller.
/// These interfaces are modeled on the UEFI 2.3 specification protocol
/// EFI_USB2_HOST_CONTROLLER_PROTOCOL. Refer to section 16.1 of the UEFI 2.3
/// Specification for more information on these interfaces.
///
struct _PEI_USB2_HOST_CONTROLLER_PPI {
PEI_USB2_HOST_CONTROLLER_CONTROL_TRANSFER ControlTransfer;
PEI_USB2_HOST_CONTROLLER_BULK_TRANSFER BulkTransfer;
PEI_USB2_HOST_CONTROLLER_GET_ROOTHUB_PORT_NUMBER GetRootHubPortNumber;
PEI_USB2_HOST_CONTROLLER_GET_ROOTHUB_PORT_STATUS GetRootHubPortStatus;
PEI_USB2_HOST_CONTROLLER_SET_ROOTHUB_PORT_FEATURE SetRootHubPortFeature;
PEI_USB2_HOST_CONTROLLER_CLEAR_ROOTHUB_PORT_FEATURE ClearRootHubPortFeature;
};
extern EFI_GUID gPeiUsb2HostControllerPpiGuid;
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