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/** @file
Definition for the USB mass storage Bulk-Only Transport protocol,
based on the "Universal Serial Bus Mass Storage Class Bulk-Only
Transport" Revision 1.0, September 31, 1999.
Copyright (c) 2007 - 2011, Intel Corporation. All rights reserved.<BR>
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 _EFI_USBMASS_BOT_H_
#define _EFI_USBMASS_BOT_H_
extern USB_MASS_TRANSPORT mUsbBotTransport;
//
// Usb Bulk-Only class specfic request
//
#define USB_BOT_RESET_REQUEST 0xFF ///< Bulk-Only Mass Storage Reset
#define USB_BOT_GETLUN_REQUEST 0xFE ///< Get Max Lun
#define USB_BOT_CBW_SIGNATURE 0x43425355 ///< dCBWSignature, tag the packet as CBW
#define USB_BOT_CSW_SIGNATURE 0x53425355 ///< dCSWSignature, tag the packet as CSW
#define USB_BOT_MAX_LUN 0x0F ///< Lun number is from 0 to 15
#define USB_BOT_MAX_CMDLEN 16 ///< Maxium number of command from command set
//
// Usb BOT command block status values
//
#define USB_BOT_COMMAND_OK 0x00 ///< Command passed, good status
#define USB_BOT_COMMAND_FAILED 0x01 ///< Command failed
#define USB_BOT_COMMAND_ERROR 0x02 ///< Phase error, need to reset the device
//
// Usb Bot retry to get CSW, refers to specification[BOT10-5.3, it says 2 times]
//
#define USB_BOT_RECV_CSW_RETRY 3
//
// Usb Bot wait device reset complete, set by experience
//
#define USB_BOT_RESET_DEVICE_STALL (100 * USB_MASS_1_MILLISECOND)
//
// Usb Bot transport timeout, set by experience
//
#define USB_BOT_SEND_CBW_TIMEOUT (3 * USB_MASS_1_SECOND)
#define USB_BOT_RECV_CSW_TIMEOUT (3 * USB_MASS_1_SECOND)
#define USB_BOT_RESET_DEVICE_TIMEOUT (3 * USB_MASS_1_SECOND)
#pragma pack(1)
///
/// The CBW (Command Block Wrapper) structures used by the USB BOT protocol.
///
typedef struct {
UINT32 Signature;
UINT32 Tag;
UINT32 DataLen; ///< Length of data between CBW and CSW
UINT8 Flag; ///< Bit 7, 0 ~ Data-Out, 1 ~ Data-In
UINT8 Lun; ///< Lun number. Bits 0~3 are used
UINT8 CmdLen; ///< Length of the command. Bits 0~4 are used
UINT8 CmdBlock[USB_BOT_MAX_CMDLEN];
} USB_BOT_CBW;
///
/// The and CSW (Command Status Wrapper) structures used by the USB BOT protocol.
///
typedef struct {
UINT32 Signature;
UINT32 Tag;
UINT32 DataResidue;
UINT8 CmdStatus;
} USB_BOT_CSW;
#pragma pack()
typedef struct {
//
// Put Interface at the first field to make it easy to distinguish BOT/CBI Protocol instance
//
EFI_USB_INTERFACE_DESCRIPTOR Interface;
EFI_USB_ENDPOINT_DESCRIPTOR *BulkInEndpoint;
EFI_USB_ENDPOINT_DESCRIPTOR *BulkOutEndpoint;
UINT32 CbwTag;
EFI_USB_IO_PROTOCOL *UsbIo;
} USB_BOT_PROTOCOL;
/**
Initializes USB BOT protocol.
This function initializes the USB mass storage class BOT protocol.
It will save its context which is a USB_BOT_PROTOCOL structure
in the Context if Context isn't NULL.
@param UsbIo The USB I/O Protocol instance
@param Context The buffer to save the context to
@retval EFI_SUCCESS The device is successfully initialized.
@retval EFI_UNSUPPORTED The transport protocol doesn't support the device.
@retval Other The USB BOT initialization fails.
**/
EFI_STATUS
UsbBotInit (
IN EFI_USB_IO_PROTOCOL *UsbIo,
OUT VOID **Context OPTIONAL
);
/**
Call the USB Mass Storage Class BOT protocol to issue
the command/data/status circle to execute the commands.
@param Context The context of the BOT protocol, that is,
USB_BOT_PROTOCOL
@param Cmd The high level command
@param CmdLen The command length
@param DataDir The direction of the data transfer
@param Data The buffer to hold data
@param DataLen The length of the data
@param Lun The number of logic unit
@param Timeout The time to wait command
@param CmdStatus The result of high level command execution
@retval EFI_SUCCESS The command is executed successfully.
@retval Other Failed to excute command
**/
EFI_STATUS
UsbBotExecCommand (
IN VOID *Context,
IN VOID *Cmd,
IN UINT8 CmdLen,
IN EFI_USB_DATA_DIRECTION DataDir,
IN VOID *Data,
IN UINT32 DataLen,
IN UINT8 Lun,
IN UINT32 Timeout,
OUT UINT32 *CmdStatus
);
/**
Reset the USB mass storage device by BOT protocol.
@param Context The context of the BOT protocol, that is,
USB_BOT_PROTOCOL.
@param ExtendedVerification If FALSE, just issue Bulk-Only Mass Storage Reset request.
If TRUE, additionally reset parent hub port.
@retval EFI_SUCCESS The device is reset.
@retval Others Failed to reset the device..
**/
EFI_STATUS
UsbBotResetDevice (
IN VOID *Context,
IN BOOLEAN ExtendedVerification
);
/**
Get the max LUN (Logical Unit Number) of USB mass storage device.
@param Context The context of the BOT protocol, that is, USB_BOT_PROTOCOL
@param MaxLun Return pointer to the max number of LUN. (e.g. MaxLun=1 means LUN0 and
LUN1 in all.)
@retval EFI_SUCCESS Max LUN is got successfully.
@retval Others Fail to execute this request.
**/
EFI_STATUS
UsbBotGetMaxLun (
IN VOID *Context,
OUT UINT8 *MaxLun
);
/**
Clean up the resource used by this BOT protocol.
@param Context The context of the BOT protocol, that is, USB_BOT_PROTOCOL.
@retval EFI_SUCCESS The resource is cleaned up.
**/
EFI_STATUS
UsbBotCleanUp (
IN VOID *Context
);
#endif
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