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/** @file
This file contains URB request, each request is warpped in a
URB (Usb Request Block).
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 _EFI_EHCI_URB_H_
#define _EFI_EHCI_URB_H_
typedef struct _EHC_QTD EHC_QTD;
typedef struct _EHC_QH EHC_QH;
typedef struct _URB URB;
typedef enum {
//
// Transfer types, used in URB to identify the transfer type
//
EHC_CTRL_TRANSFER = 0x01,
EHC_BULK_TRANSFER = 0x02,
EHC_INT_TRANSFER_SYNC = 0x04,
EHC_INT_TRANSFER_ASYNC = 0x08,
EHC_QTD_SIG = EFI_SIGNATURE_32 ('U', 'S', 'B', 'T'),
EHC_QH_SIG = EFI_SIGNATURE_32 ('U', 'S', 'B', 'H'),
EHC_URB_SIG = EFI_SIGNATURE_32 ('U', 'S', 'B', 'R'),
//
// Hardware related bit definitions
//
EHC_TYPE_ITD = 0x00,
EHC_TYPE_QH = 0x02,
EHC_TYPE_SITD = 0x04,
EHC_TYPE_FSTN = 0x06,
QH_NAK_RELOAD = 3,
QH_HSHBW_MULTI = 1,
QTD_MAX_ERR = 3,
QTD_PID_OUTPUT = 0x00,
QTD_PID_INPUT = 0x01,
QTD_PID_SETUP = 0x02,
QTD_STAT_DO_OUT = 0,
QTD_STAT_DO_SS = 0,
QTD_STAT_DO_PING = 0x01,
QTD_STAT_DO_CS = 0x02,
QTD_STAT_TRANS_ERR = 0x08,
QTD_STAT_BABBLE_ERR = 0x10,
QTD_STAT_BUFF_ERR = 0x20,
QTD_STAT_HALTED = 0x40,
QTD_STAT_ACTIVE = 0x80,
QTD_STAT_ERR_MASK = QTD_STAT_TRANS_ERR | QTD_STAT_BABBLE_ERR | QTD_STAT_BUFF_ERR,
QTD_MAX_BUFFER = 4,
QTD_BUF_LEN = 4096,
QTD_BUF_MASK = 0x0FFF,
QH_MICROFRAME_0 = 0x01,
QH_MICROFRAME_1 = 0x02,
QH_MICROFRAME_2 = 0x04,
QH_MICROFRAME_3 = 0x08,
QH_MICROFRAME_4 = 0x10,
QH_MICROFRAME_5 = 0x20,
QH_MICROFRAME_6 = 0x40,
QH_MICROFRAME_7 = 0x80,
USB_ERR_SHORT_PACKET = 0x200
}EHCI_URB_FLAG_VALUE;
//
// Fill in the hardware link point: pass in a EHC_QH/QH_HW
// pointer to QH_LINK; A EHC_QTD/QTD_HW pointer to QTD_LINK
//
#define QH_LINK(Addr, Type, Term) \
((UINT32) ((EHC_LOW_32BIT (Addr) & 0xFFFFFFE0) | (Type) | ((Term) ? 1 : 0)))
#define QTD_LINK(Addr, Term) QH_LINK((Addr), 0, (Term))
//
// The defination of EHCI hardware used data structure for
// little endian architecture. The QTD and QH structures
// are required to be 32 bytes aligned. Don't add members
// to the head of the associated software strucuture.
//
#pragma pack(1)
typedef struct {
UINT32 NextQtd;
UINT32 AltNext;
UINT32 Status : 8;
UINT32 Pid : 2;
UINT32 ErrCnt : 2;
UINT32 CurPage : 3;
UINT32 IOC : 1;
UINT32 TotalBytes : 15;
UINT32 DataToggle : 1;
UINT32 Page[5];
UINT32 PageHigh[5];
} QTD_HW;
typedef struct {
UINT32 HorizonLink;
//
// Endpoint capabilities/Characteristics DWord 1 and DWord 2
//
UINT32 DeviceAddr : 7;
UINT32 Inactive : 1;
UINT32 EpNum : 4;
UINT32 EpSpeed : 2;
UINT32 DtCtrl : 1;
UINT32 ReclaimHead : 1;
UINT32 MaxPacketLen : 11;
UINT32 CtrlEp : 1;
UINT32 NakReload : 4;
UINT32 SMask : 8;
UINT32 CMask : 8;
UINT32 HubAddr : 7;
UINT32 PortNum : 7;
UINT32 Multiplier : 2;
//
// Transaction execution overlay area
//
UINT32 CurQtd;
UINT32 NextQtd;
UINT32 AltQtd;
UINT32 Status : 8;
UINT32 Pid : 2;
UINT32 ErrCnt : 2;
UINT32 CurPage : 3;
UINT32 IOC : 1;
UINT32 TotalBytes : 15;
UINT32 DataToggle : 1;
UINT32 Page[5];
UINT32 PageHigh[5];
} QH_HW;
#pragma pack()
//
// Endpoint address and its capabilities
//
typedef struct _USB_ENDPOINT {
UINT8 DevAddr;
UINT8 EpAddr; // Endpoint address, no direction encoded in
EFI_USB_DATA_DIRECTION Direction;
UINT8 DevSpeed;
UINTN MaxPacket;
UINT8 HubAddr;
UINT8 HubPort;
UINT8 Toggle; // Data toggle, not used for control transfer
UINTN Type;
UINTN PollRate; // Polling interval used by EHCI
} USB_ENDPOINT;
//
// Software QTD strcture, this is used to manage all the
// QTD generated from a URB. Don't add fields before QtdHw.
//
struct _EHC_QTD {
QTD_HW QtdHw;
UINT32 Signature;
LIST_ENTRY QtdList; // The list of QTDs to one end point
UINT8 *Data; // Buffer of the original data
UINTN DataLen; // Original amount of data in this QTD
};
//
// Software QH structure. All three different transaction types
// supported by UEFI USB, that is the control/bulk/interrupt
// transfers use the queue head and queue token strcuture.
//
// Interrupt QHs are linked to periodic frame list in the reversed
// 2^N tree. Each interrupt QH is linked to the list starting at
// frame 0. There is a dummy interrupt QH linked to each frame as
// a sentinental whose polling interval is 1. Synchronous interrupt
// transfer is linked after this dummy QH.
//
// For control/bulk transfer, only synchronous (in the sense of UEFI)
// transfer is supported. A dummy QH is linked to EHCI AsyncListAddr
// as the reclamation header. New transfer is inserted after this QH.
//
struct _EHC_QH {
QH_HW QhHw;
UINT32 Signature;
EHC_QH *NextQh; // The queue head pointed to by horizontal link
LIST_ENTRY Qtds; // The list of QTDs to this queue head
UINTN Interval;
};
//
// URB (Usb Request Block) contains information for all kinds of
// usb requests.
//
struct _URB {
UINT32 Signature;
LIST_ENTRY UrbList;
//
// Transaction information
//
USB_ENDPOINT Ep;
EFI_USB_DEVICE_REQUEST *Request; // Control transfer only
VOID *RequestPhy; // Address of the mapped request
VOID *RequestMap;
VOID *Data;
UINTN DataLen;
VOID *DataPhy; // Address of the mapped user data
VOID *DataMap;
EFI_ASYNC_USB_TRANSFER_CALLBACK Callback;
VOID *Context;
//
// Schedule data
//
EHC_QH *Qh;
//
// Transaction result
//
UINT32 Result;
UINTN Completed; // completed data length
UINT8 DataToggle;
};
/**
Create a single QTD to hold the data.
@param Ehc The EHCI device.
@param Data Current data not associated with a QTD.
@param DataLen The length of the data.
@param PktId Packet ID to use in the QTD.
@param Toggle Data toggle to use in the QTD.
@param MaxPacket Maximu packet length of the endpoint.
@return Created QTD or NULL if failed to create one.
**/
EHC_QTD *
EhcCreateQtd (
IN USB2_HC_DEV *Ehc,
IN UINT8 *Data,
IN UINTN DataLen,
IN UINT8 PktId,
IN UINT8 Toggle,
IN UINTN MaxPacket
);
/**
Allocate and initialize a EHCI queue head.
@param Ehci The EHCI device.
@param Ep The endpoint to create queue head for.
@return Created queue head or NULL if failed to create one.
**/
EHC_QH *
EhcCreateQh (
IN USB2_HC_DEV *Ehci,
IN USB_ENDPOINT *Ep
);
/**
Free an allocated URB. It is possible for it to be partially inited.
@param Ehc The EHCI device.
@param Urb The URB to free.
@return None.
**/
VOID
EhcFreeUrb (
IN USB2_HC_DEV *Ehc,
IN URB *Urb
);
/**
Create a new URB and its associated QTD.
@param Ehc The EHCI device.
@param DevAddr The device address.
@param EpAddr Endpoint addrress & its direction.
@param DevSpeed The device speed.
@param Toggle Initial data toggle to use.
@param MaxPacket The max packet length of the endpoint.
@param Hub The transaction translator to use.
@param Type The transaction type.
@param Request The standard USB request for control transfer.
@param Data The user data to transfer.
@param DataLen The length of data buffer.
@param Callback The function to call when data is transferred.
@param Context The context to the callback.
@param Interval The interval for interrupt transfer.
@return Created URB or NULL.
**/
URB *
EhcCreateUrb (
IN USB2_HC_DEV *Ehc,
IN UINT8 DevAddr,
IN UINT8 EpAddr,
IN UINT8 DevSpeed,
IN UINT8 Toggle,
IN UINTN MaxPacket,
IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Hub,
IN UINTN Type,
IN EFI_USB_DEVICE_REQUEST *Request,
IN VOID *Data,
IN UINTN DataLen,
IN EFI_ASYNC_USB_TRANSFER_CALLBACK Callback,
IN VOID *Context,
IN UINTN Interval
);
#endif
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