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/** @file
Copyright (c) 2013-2014, ARM Ltd. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef __USB_DEVICE_PROTOCOL_H__
#define __USB_DEVICE_PROTOCOL_H__
#include <IndustryStandard/Usb.h>
extern EFI_GUID gUsbDeviceProtocolGuid;
/*
* Note: This Protocol is just the bare minimum for Android Fastboot. It
* only makes sense for devices that only do Bulk Transfers and only have one
* endpoint.
*/
/*
Callback to be called when data is received.
Buffer is callee-allocated and it's the caller's responsibility to free it with
FreePool.
@param[in] Size Size in bytes of data.
@param[in] Buffer Pointer to data.
*/
typedef
VOID
(*USB_DEVICE_RX_CALLBACK) (
IN UINTN Size,
IN VOID *Buffer
);
/*
Callback to be called when the host asks for data by sending an IN token
(excluding during the data stage of a control transfer).
When this function is called, data previously buffered by calling Send() has
been sent.
@param[in]Endpoint Endpoint index, as specified in endpoint descriptors, of
the endpoint the IN token was sent to.
*/
typedef
VOID
(*USB_DEVICE_TX_CALLBACK) (
IN UINT8 EndpointIndex
);
/*
Put data in the Tx buffer to be sent on the next IN token.
Don't call this function again until the TxCallback has been called.
@param[in]Endpoint Endpoint index, as specified in endpoint descriptors, of
the endpoint to send the data from.
@param[in]Size Size in bytes of data.
@param[in]Buffer Pointer to data.
@retval EFI_SUCCESS The data was queued successfully.
@retval EFI_INVALID_PARAMETER There was an error sending the data.
*/
typedef
EFI_STATUS
(*USB_DEVICE_SEND) (
IN UINT8 EndpointIndex,
IN UINTN Size,
IN CONST VOID *Buffer
);
/*
Restart the USB peripheral controller and respond to enumeration.
@param[in] DeviceDescriptor pointer to device descriptor
@param[in] Descriptors Array of pointers to buffers, where
Descriptors[n] contains the response to a
GET_DESCRIPTOR request for configuration n. From
USB Spec section 9.4.3:
"The first interface descriptor follows the
configuration descriptor. The endpoint
descriptors for the first interface follow the
first interface descriptor. If there are
additional interfaces, their interface
descriptor and endpoint descriptors follow the
first interface’s endpoint descriptors".
The size of each buffer is the TotalLength
member of the Configuration Descriptor.
The size of the array is
DeviceDescriptor->NumConfigurations.
@param[in]RxCallback See USB_DEVICE_RX_CALLBACK
@param[in]TxCallback See USB_DEVICE_TX_CALLBACK
*/
typedef
EFI_STATUS
(*USB_DEVICE_START) (
IN USB_DEVICE_DESCRIPTOR *DeviceDescriptor,
IN VOID **Descriptors,
IN USB_DEVICE_RX_CALLBACK RxCallback,
IN USB_DEVICE_TX_CALLBACK TxCallback
);
struct _USB_DEVICE_PROTOCOL {
USB_DEVICE_START Start;
USB_DEVICE_SEND Send;
};
typedef struct _USB_DEVICE_PROTOCOL USB_DEVICE_PROTOCOL;
#endif //ifndef __USB_DEVICE_PROTOCOL_H__
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