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/** @file
Manage Usb Descriptor List
Copyright (c) 2007, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef _USB_DESCRIPTOR_H_
#define _USB_DESCRIPTOR_H_
typedef enum {
USB_MAX_INTERFACE_SETTING = 8
}USB_INTERFACE_SETTING_MAX;
//
// The RequestType in EFI_USB_DEVICE_REQUEST is composed of
// three fields: One bit direction, 2 bit type, and 5 bit
// target.
//
#define USB_REQUEST_TYPE(Dir, Type, Target) \
((UINT8)((((Dir) == EfiUsbDataIn ? 0x01 : 0) << 7) | (Type) | (Target)))
//
// A common header for usb standard descriptor.
// Each stand descriptor has a length and type.
//
#pragma pack(1)
typedef struct {
UINT8 Len;
UINT8 Type;
} USB_DESC_HEAD;
#pragma pack()
//
// Each USB device has a device descriptor. Each device may
// have several configures. Each configure contains several
// interfaces. Each interface may have several settings. Each
// setting has several endpoints.
//
// EFI_USB_..._DESCRIPTOR must be the first member of the
// structure.
//
typedef struct {
EFI_USB_ENDPOINT_DESCRIPTOR Desc;
UINT8 Toggle;
} USB_ENDPOINT_DESC;
typedef struct {
EFI_USB_INTERFACE_DESCRIPTOR Desc;
USB_ENDPOINT_DESC **Endpoints;
} USB_INTERFACE_SETTING;
//
// An interface may have several settings. Use a
// fixed max number of settings to simplify code.
// It should sufice in most environments.
//
typedef struct {
USB_INTERFACE_SETTING* Settings[USB_MAX_INTERFACE_SETTING];
UINTN NumOfSetting;
UINT8 ActiveIndex; // Index of active setting
} USB_INTERFACE_DESC;
typedef struct {
EFI_USB_CONFIG_DESCRIPTOR Desc;
USB_INTERFACE_DESC **Interfaces;
} USB_CONFIG_DESC;
typedef struct {
EFI_USB_DEVICE_DESCRIPTOR Desc;
USB_CONFIG_DESC **Configs;
} USB_DEVICE_DESC;
/**
USB standard control transfer support routine. This
function is used by USB device. It is possible that
the device's interfaces are still waiting to be
enumerated.
@param UsbDev The usb device.
@param Direction The direction of data transfer.
@param Type Standard / class specific / vendor specific.
@param Target The receiving target.
@param Request Which request.
@param Value The wValue parameter of the request.
@param Index The wIndex parameter of the request.
@param Buf The buffer to receive data into / transmit from.
@param Length The length of the buffer.
@retval EFI_SUCCESS The control request is executed.
@retval EFI_DEVICE_ERROR Failed to execute the control transfer.
**/
EFI_STATUS
UsbCtrlRequest (
IN USB_DEVICE *UsbDev,
IN EFI_USB_DATA_DIRECTION Direction,
IN UINTN Type,
IN UINTN Target,
IN UINTN Request,
IN UINT16 Value,
IN UINT16 Index,
IN OUT VOID *Buf,
IN UINTN Length
);
/**
Return the max packet size for endpoint zero. This function
is the first function called to get descriptors during bus
enumeration.
@param UsbDev The usb device.
@retval EFI_SUCCESS The max packet size of endpoint zero is retrieved.
@retval EFI_DEVICE_ERROR Failed to retrieve it.
**/
EFI_STATUS
UsbGetMaxPacketSize0 (
IN USB_DEVICE *UsbDev
);
/**
Free a device descriptor with its configurations.
@param DevDesc The device descriptor.
@return None.
**/
VOID
UsbFreeDevDesc (
IN USB_DEVICE_DESC *DevDesc
);
/**
Retrieve the indexed string for the language. It requires two
steps to get a string, first to get the string's length. Then
the string itself.
@param UsbDev The usb device.
@param StringIndex The index of the string to retrieve.
@param LangId Language ID.
@return The created string descriptor or NULL.
**/
EFI_USB_STRING_DESCRIPTOR*
UsbGetOneString (
IN USB_DEVICE *UsbDev,
IN UINT8 StringIndex,
IN UINT16 LangId
);
/**
Build the whole array of descriptors. This function must
be called after UsbGetMaxPacketSize0 returns the max packet
size correctly for endpoint 0.
@param UsbDev The Usb device.
@retval EFI_SUCCESS The descriptor table is build.
@retval EFI_OUT_OF_RESOURCES Failed to allocate resource for the descriptor.
**/
EFI_STATUS
UsbBuildDescTable (
IN USB_DEVICE *UsbDev
);
/**
Set the device's address.
@param UsbDev The device to set address to.
@param Address The address to set.
@retval EFI_SUCCESS The device is set to the address.
@retval Others Failed to set the device address.
**/
EFI_STATUS
UsbSetAddress (
IN USB_DEVICE *UsbDev,
IN UINT8 Address
);
/**
Set the device's configuration. This function changes
the device's internal state. UsbSelectConfig changes
the Usb bus's internal state.
@param UsbDev The USB device to set configure to.
@param ConfigIndex The configure index to set.
@retval EFI_SUCCESS The device is configured now.
@retval Others Failed to set the device configure.
**/
EFI_STATUS
UsbSetConfig (
IN USB_DEVICE *UsbDev,
IN UINT8 ConfigIndex
);
/**
Usb UsbIo interface to clear the feature. This is should
only be used by HUB which is considered a device driver
on top of the UsbIo interface.
@param UsbIo The UsbIo interface.
@param Target The target of the transfer: endpoint/device.
@param Feature The feature to clear.
@param Index The wIndex parameter.
@retval EFI_SUCCESS The device feature is cleared.
@retval Others Failed to clear the feature.
**/
EFI_STATUS
UsbIoClearFeature (
IN EFI_USB_IO_PROTOCOL *UsbIo,
IN UINTN Target,
IN UINT16 Feature,
IN UINT16 Index
);
#endif
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