usbdrv/peripheral/public/usbcshared.h
branchRCL_3
changeset 16 012cc2ee6408
parent 15 f92a4f87e424
--- a/usbdrv/peripheral/public/usbcshared.h	Tue Aug 31 17:01:47 2010 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,997 +0,0 @@
-// Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).
-// All rights reserved.
-// This component and the accompanying materials are made available
-// under the terms of the License "Eclipse Public License v1.0"
-// which accompanies this distribution, and is available
-// at the URL "http://www.eclipse.org/legal/epl-v10.html".
-//
-// Initial Contributors:
-// Nokia Corporation - initial contribution.
-//
-// Contributors:
-//
-// Description:
-// e32\include\drivers\usbcshared.h
-// Kernel side definitions for the USB Device driver stack (PIL + LDD).
-// 
-//
-
-/**
- @file usbcshared.h
- @internalTechnology
-*/
-
-#ifndef __USBCSHARED_H__
-#define __USBCSHARED_H__
-
-//#include <drivers/usbcque.h>
-#include <usb/usbcque.h>
-
-// Define here what options are required:
-// (USB_SUPPORTS_CONTROLENDPOINTS and USB_SUPPORTS_SET_DESCRIPTOR_REQUEST
-//  have never been tested though...)
-//#define USB_SUPPORTS_CONTROLENDPOINTS
-//#define USB_SUPPORTS_SET_DESCRIPTOR_REQUEST
-
-//#include <drivers/usbcdesc.h>
-#include <usb/usbcdesc.h>
-//#include <drivers/usbotgperipheralcontrolif.h>
-#include <usb/usbotgperipheralcontrolif.h>
-
-#include <usb/usb_peripheral_shai.h>
-#include <usb/usb_charger_detection_shai.h>
-
-#include <usb/usbcontrolxferif.h>
-
-// FIXME: Remove this typedef once PIL and LDD are ready for SHAI
-typedef UsbShai::TUsbPeripheralEvent TUsbcDeviceEvent;
-typedef UsbShai::TUsbPeripheralPacketArray TUsbcPacketArray;
-
-// Forward declaration
-class DControlTransferManager;
-class TUsbcSetup;
-
-// Debug Support
-
-// Use for debugging purposes only (commented out for normal operation):
-//#define USBC_LDD_BUFFER_TRACE
-
-static const char KUsbPILPanicCat[] = "USB PIL FAULT"; // kernel fault category
-_LIT(KUsbPILKillCat, "USB PIL KILL");                    // thread kill category
-_LIT(KUsbLDDKillCat, "USB LDD KILL");                    // thread kill category
-
-/** Error code for stalled endpoint.
-*/
-const TInt KErrEndpointStall = KErrLocked;
-
-/** Error code for Ep0 write prematurely ended by a host OUT token.
-*/
-const TInt KErrPrematureEnd = KErrDiskFull;
-
-/** The following constants control the buffer arrangement for OUT transfers (IN transfers have only 1
-    buffer). The total size of buffering for an OUT endpoint will be number of buffers * buffersize,
-    so that, for example, a Bulk OUT endpoint will have KUsbcDmaBufNumBulk * KUsbcDmaBufSzBulk bytes of
-    buffering.
-    These buffers will be physically contiguous, so that DMA may be used.
-    The number of buffers MUST be >=2 - otherwise the buffering scheme won't work.
-    The buffer sizes should be an exact fraction of 4kB and the number of buffers such that the
-    buffersize * number of buffers is an exact multiple of 4kB, otherwise memory will be wasted.
-*/
-/** Size of a Control ep buffer.
-*/
-const TInt KUsbcDmaBufSzControl = 1024;
-
-/** Size of a Bulk ep buffer.
-*/
-const TInt KUsbcDmaBufSzBulk = 4096;
-
-/** Size of an Interrupt ep buffer.
-*/
-const TInt KUsbcDmaBufSzInterrupt = 4096;
-
-/** Size of an Isochronous ep buffer.
-*/
-const TInt KUsbcDmaBufSzIsochronous = 4096;
-
-/** Number of buffers for Control OUT endpoints.
-*/
-const TInt KUsbcDmaBufNumControl = 2;
-
-/** Number of buffers for Isochronous OUT endpoints.
-*/
-const TInt KUsbcDmaBufNumIsochronous = 2;
-
-/** Number of buffers for Bulk OUT endpoints.
-*/
-const TInt KUsbcDmaBufNumBulk = 2;
-
-/** Number of buffers for Interrupt OUT endpoints.
-*/
-const TInt KUsbcDmaBufNumInterrupt = 2;
-
-/** Maximum buffer number.
-*/
-const TInt KUsbcDmaBufNumMax = MAX4(KUsbcDmaBufNumControl, KUsbcDmaBufNumIsochronous,
-                                    KUsbcDmaBufNumBulk, KUsbcDmaBufNumInterrupt);
-
-/** Maximum number of recorded packets possible.
-*/
-const TUint KUsbcDmaBufMaxPkts = 2;
-
-/** Number of arrays.
-*/
-const TInt KUsbcDmaBufNumArrays = 2;
-
-/** Max size that Ep0 packets might have.
-*/
-const TInt KUsbcBufSzControl = 64;
-
-/** The Ep0 RX data collection buffer area.
-    (Arbitrary size, judged to be sufficient for SET_DESCRIPTOR requests)
-*/
-const TInt KUsbcBufSz_Ep0Rx = 1024;
-
-/** The Ep0 TX buffer area.
-    (Size sufficient to hold as much data as can be requested via GET_DESCRIPTOR)
-*/
-const TInt KUsbcBufSz_Ep0Tx = 1024 * 64; 
-
-
-/** The USB version the stack is compliant with: 2.0 (BCD).
-*/
-const TUint16 KUsbcUsbVersion = 0x0200;
-
-/** Maximum number of endpoints an interface (i.e. LDD) may have.
-*/
-const TInt KUsbcMaxEpNumber = 5;
-
-/** Status FIFO depth; enough for 2 complete configs.
-*/
-const TInt KUsbDeviceStatusQueueDepth = 15;
-
-/** = 'no status info'.
-*/
-const TUint32 KUsbDeviceStatusNull = 0xffffffffu;
-
-/** = 'no buffer available'.
-*/
-const TInt KUsbcInvalidBufferIndex = -1;
-
-/** = 'no packet available'.
-*/
-const TUint KUsbcInvalidPacketIndex = (TUint)(-1);
-
-/** = 'no drainable buffers'.
-*/
-const TInt KUsbcInvalidDrainQueueIndex = -1;
-
-/** Number of possible bandwidth priorities.
-*/
-const TInt KUsbcDmaBufMaxPriorities = 4;
-
-// The following buffer sizes are used within the LDD for the different
-// user-selectable endpoint bandwidth priorities
-// (EUsbcBandwidthOUTDefault/Plus1/Plus2/Maximum + the same for 'IN').
-// These values, in particular those for the Maximum setting, were obtained
-// empirically.
-
-/** Bulk IN buffer sizes for different priorities (4K, 16K, 64K, 512K).
-*/
-const TInt KUsbcDmaBufSizesBulkIN[KUsbcDmaBufMaxPriorities] =
-    {KUsbcDmaBufSzBulk, 0x4000, 0x10000, 0x80000};
-
-/** Bulk OUT buffer sizes for different priorities (4K, 16K, 64K, 512K).
-*/
-const TInt KUsbcDmaBufSizesBulkOUT[KUsbcDmaBufMaxPriorities] =
-    {KUsbcDmaBufSzBulk, 0x4000, 0x10000, 0x80000};
-
-/** Number of UDCs supported in the system.
-    (Support for more than one UDC is preliminary.)
-*/
-const TInt KUsbcMaxUdcs = 2;
-
-/** Number of endpoints a USB device can have.
-    (30 regular endpoints + 2 x Ep0)
-*/
-const TInt KUsbcEpArraySize = KUsbcMaxEndpoints + 2;
-
-/** Number of notification requests of the same kind that can be registered at
-    a time. As normally not more than one request per kind per LDD is
-    permitted, this number is roughly equivalent to the maximum number of LDDs
-    that can be operating at the same time.
-    This constant is used by the PIL while maintaining its request lists
-    (iClientCallbacks, iStatusCallbacks, iEpStatusCallbacks, iOtgCallbacks) to
-    ensure that the lists are of a finite length and thus the list traverse
-    time is bounded.
-    This value is chosen with the maximum number of USB interfaces (not
-    settings) allowed by the spec for a single device in mind.
-*/
-const TInt KUsbcMaxListLength = 256;
-
-/**
- * device event FIFO depth, there are 5 different event define currently,
- * 10 should be enough
- */
-const TInt KUsbDeviceEventQueueDepth = 10;
-
-/** USB LDD client callback.
-*/
-class TUsbcClientCallback
-    {
-public:
-    inline TUsbcClientCallback(DBase* aOwner, TDfcFn aCallback, TInt aPriority);
-    inline DBase* Owner() const;
-    inline TInt DoCallback();
-    inline void Cancel();
-    inline void SetDfcQ(TDfcQue* aDfcQ);
-public:
-    /** Used by the PIL to queue callback objects into a TSglQue. */
-    TSglQueLink iLink;
-private:
-    DBase* iOwner;
-    TDfc iDfc;
-    };
-
-
-/** The endpoint halt/clear_halt status.
-*/
-class TUsbcEndpointStatusCallback
-    {
-public:
-    inline TUsbcEndpointStatusCallback(DBase* aOwner, TDfcFn aCallback, TInt aPriority);
-    inline void SetState(TUint aState);
-    inline TUint State() const;
-    inline DBase* Owner() const;
-    inline TInt DoCallback();
-    inline void Cancel();
-    inline void SetDfcQ(TDfcQue* aDfcQ);
-public:
-    /** Used by the PIL to queue callback objects into a TSglQue. */
-    TSglQueLink iLink;
-private:
-    DBase* iOwner;
-    TDfc iDfc;
-    TUint iState;
-    };
-
-
-/** Maximum number of device status requests that can be queued at a time.
-    The value chosen is thought to be sufficient in all situations.
-*/
-const TInt KUsbcDeviceStateRequests = 8;
-
-        
-/** The USB device status.
-*/
-class TUsbcStatusCallback
-    {
-public:
-    inline TUsbcStatusCallback(DBase* aOwner, TDfcFn aCallback, TInt aPriority);
-    inline void SetState(UsbShai::TUsbPeripheralState aState);
-    inline UsbShai::TUsbPeripheralState State(TInt aIndex) const;
-    inline void ResetState();
-    inline DBase* Owner() const;
-    inline TInt DoCallback();
-    inline void Cancel();
-    inline void SetDfcQ(TDfcQue* aDfcQ);
-public:
-    /** Used by the PIL to queue callback objects into a TSglQue. */
-    TSglQueLink iLink;
-private:
-    DBase* iOwner;
-    TDfc iDfc;
-    UsbShai::TUsbPeripheralState iState[KUsbcDeviceStateRequests];
-    };
-
-
-/** A USB transfer request.
-
-    @publishedPartner
-    @released
-*/
-class TUsbcRequestCallback : public UsbShai::TUsbPeripheralRequest
-    {
-public:
-    /** @internalTechnology */
-    inline TUsbcRequestCallback(const DBase* aOwner, TInt aEndpointNum, TDfcFn aDfcFunc,
-                         TAny* aEndpoint, TDfcQue* aDfcQ, TInt aPriority);
-    /** @internalTechnology    */
-    inline ~TUsbcRequestCallback();
-    
-    IMPORT_C void SetRxBufferInfo(TUint8* aBufferStart,
-                                      TUintPtr aBufferAddr,
-                                      TUint32* aPacketIndex,
-                                      TUint32* aPacketSize, 
-                                      TInt aLength);
-                                    
-    IMPORT_C void SetTxBufferInfo(TUint8* aBufferStart, 
-                                      TUintPtr aBufferAddr,
-                                      TInt aLength);
-                                        
-    /** @internalTechnology    */
-    inline void SetTransferDirection(UsbShai::TTransferDirection aTransferDir);
-    /** @internalTechnology    */
-    inline const DBase* Owner() const;
-    /** @internalTechnology    */
-    inline TInt DoCallback();
-    /** @internalTechnology    */
-    inline void Cancel();
-public:
-    /** Used by the PIL to queue callback objects into a TSglQue.
-        @internalTechnology
-    */
-    TSglQueLink iLink;
-public:
-    /** The endpoint number. */
-    const TInt iEndpointNum;
-
-    /** Indicates the LDD client for this transfer. */
-    const DBase* const iOwner;
-    /** DFC, used by PIL to call back the LDD when transfer completes to the LDD. */
-    TDfc iDfc;
-    };
-
-/** USB On-The-Go feature change callback.
-*/
-class TUsbcOtgFeatureCallback
-    {
-public:
-    inline TUsbcOtgFeatureCallback(DBase* aOwner, TDfcFn aCallback, TInt aPriority);
-    inline void SetFeatures(TUint8 aFeatures);
-    inline TUint8 Features() const;
-    inline DBase* Owner() const;
-    inline TInt DoCallback();
-    inline void Cancel();
-    inline void SetDfcQ(TDfcQue* aDfcQ);
-public:
-    /** Used by the PIL to queue callback objects into a TSglQue. */
-    TSglQueLink iLink;
-private:
-    DBase* iOwner;
-    TDfc iDfc;
-    TUint8 iValue;
-    };
-
-//
-//########################### Physical Device Driver (PIL + PSL) ######################
-//
-
-class TUsbcLogicalEndpoint;
-
-/** This models a physical (real) endpoint of the UDC.
-*/
-class TUsbcPhysicalEndpoint
-    {
-public:
-    TUsbcPhysicalEndpoint();
-    ~TUsbcPhysicalEndpoint();
-    TBool EndpointSuitable(const TUsbcEndpointInfo* aEpInfo, TInt aIfcNumber) const; // Check Todo, SC will pass pointer to derived class
-    TInt TypeAvailable(TUint aType) const;
-    TInt DirAvailable(TUint aDir) const;
-public:
-    /** This endpoint's capabilities. */
-    UsbShai::TUsbPeripheralEndpointCaps iCaps;
-    /** USB address: 0x00, 0x80, 0x01, 0x81, etc. */
-    TUint8 iEndpointAddr;
-    /** Pointer to interface # this endpoint has been assigned to. */
-    const TUint8* iIfcNumber;
-    /** Pointer to corresponding logical endpoint or NULL. */
-    const TUsbcLogicalEndpoint* iLEndpoint;
-    /** Only used when searching for available endpoints. */
-    TBool iSettingReserve;
-    /** True if endpoint is halted (i.e. issues STALL handshakes), false otherwise. */
-    TBool iHalt;
-    };
-
-
-class DUsbClientController;
-class TUsbcInterface;
-
-/** This is a 'logical' endpoint, as used by our device configuration model.
-*/
-class TUsbcLogicalEndpoint
-    {
-public:
-    TUsbcLogicalEndpoint(DUsbClientController* aController, TUint aEndpointNum,
-                         const TUsbcEndpointInfo& aEpInfo, TUsbcInterface* aInterface,
-                         TUsbcPhysicalEndpoint* aPEndpoint);        // Check Todo, SC will pass pointer to derived class
-    ~TUsbcLogicalEndpoint();
-public:
-    /** Pointer to controller object. */
-    DUsbClientController* iController;
-    /** The virtual (logical) endpoint number. */
-    const TInt iLEndpointNum;
-    /** This endpoint's info structure. */
-    TUsbcEndpointInfo iInfo;                                        // Check Todo, SC will pass pointer to derived class
-    /** Stores the endpoint size to be used for FS. */
-    TInt iEpSize_Fs;
-    /** Stores the endpoint size to be used for HS. */
-    TInt iEpSize_Hs;
-    /** 'Back' pointer. */
-    const TUsbcInterface* iInterface;
-    /** Pointer to corresponding physical endpoint, never NULL. */
-    TUsbcPhysicalEndpoint* const iPEndpoint;
-    };
-
-
-class TUsbcInterfaceSet;
-
-/** This is an 'alternate setting' of an interface.
-*/
-class TUsbcInterface
-    {
-public:
-    TUsbcInterface(TUsbcInterfaceSet* aIfcSet, TUint8 aSetting, TBool aNoEp0Requests);
-    ~TUsbcInterface();
-public:
-    /** Array of endpoints making up (belonging to) this setting. */
-    RPointerArray<TUsbcLogicalEndpoint> iEndpoints;
-    /** 'Back' pointer. */
-    TUsbcInterfaceSet* const iInterfaceSet;
-    /** bAlternateSetting (zero-based). */
-    const TUint8 iSettingCode;
-    /** KUsbcInterfaceInfo_NoEp0RequestsPlease: stall non-std Setup requests. */
-    const TBool iNoEp0Requests;
-    };
-
-
-/** This is an 'interface' (owning 1 or more alternate settings).
-
-    @see TUsbcInterface
-*/
-class TUsbcInterfaceSet
-    {
-public:
-    TUsbcInterfaceSet(const DBase* aClientId, TUint8 aIfcNum);
-    ~TUsbcInterfaceSet();
-    inline const TUsbcInterface* CurrentInterface() const;
-    inline TUsbcInterface* CurrentInterface();
-public:
-    /** Array of alternate settings provided by (belonging to) this interface. */
-    RPointerArray<TUsbcInterface> iInterfaces;
-    /** Pointer to the LDD which created and owns this interface. */
-    const DBase* const iClientId;
-    /** bInterfaceNumber (zero-based). */
-    TUint8 iInterfaceNumber;
-    /** bAlternateSetting (zero-based). */
-    TUint8 iCurrentInterface;
-    };
-
-
-/** This is a 'configuration' of the USB device.
-    Currently we support only one configuration.
-*/
-class TUsbcConfiguration
-    {
-public:
-    TUsbcConfiguration(TUint8 aConfigVal);
-    ~TUsbcConfiguration();
-public:
-    /** Array of interfaces making up (belonging to) this configuration. */
-    RPointerArray<TUsbcInterfaceSet> iInterfaceSets;
-    /** bConfigurationValue (one-based). */
-    const TUint8 iConfigValue;
-    };
-
-
-/** The USB controller's power handler class.
-*/
-NONSHARABLE_CLASS(DUsbcPowerHandler) : public DPowerHandler
-    {
-public:
-    void PowerUp();
-    void PowerDown(TPowerState);
-public:
-    DUsbcPowerHandler(DUsbClientController* aController);
-private:
-    DUsbClientController* iController;
-    };
-
-
-/*
-This is the EndpointInfo class used by the usb shared chunk client driver. 
-*/
-
-class TUsbcScEndpointInfo;
-
-
-/**
-Used to represent an array of (or inheriting from) TUsbcEndpointInfo objects.
-
-@see DUsbClientController::SetInterface
-*/
-
-class TUsbcEndpointInfoArray
-    {
-public:
-    typedef enum {EUsbcEndpointInfo, EUsbcScEndpointInfo} TArrayType;
-
-    TUsbcEndpointInfoArray(const TUsbcEndpointInfo* aData, TInt aDataSize=0);
-    TUsbcEndpointInfoArray(const TUsbcScEndpointInfo* aData, TInt aDataSize=0);
-    inline TUsbcEndpointInfo& operator[](TInt aIndex) const; 
-
-    TArrayType iType;
-private:
-    TUint8* iData;
-    TInt iDataSize;
-    };
-
-class TUsbPeriDeviceEventQueue
-    {
-public:
-    TUsbPeriDeviceEventQueue();
-    
-    void FifoAdd(TUsbcDeviceEvent aDeviceStatus);
-    TUsbcDeviceEvent FifoGet();
-
-private:
-    TUsbcDeviceEvent iDeviceEventQueue[KUsbDeviceEventQueueDepth];
-    TInt iDeviceQueueHead;
-    TInt iDeviceQueueTail;
-    };
-    
-class TUsbcRequestCallback; // todo?? required only for class below
-
-/** The USB Device software controller class.
-
-    Implements the platform-independent layer (PIL), and defines the interface to the
-    platform-specific layer PSL).
-
-    The implementation of the platform-specific layer interfaces with the hardware.
-*/
-NONSHARABLE_CLASS(DUsbClientController) : public DBase, 
-                                          public MUsbOtgPeripheralControlIf,
-                                          public UsbShai::MUsbPeripheralPilCallbackIf, 
-                                          public MControlTransferIf, 
-                                          public UsbShai::MChargerDetectorObserverIf
-    {   
-    friend class UsbShai::UsbPeripheralPil;
-    friend class TUsbHostWrapperEntry;
-    friend class DUsbcPowerHandler;
-    friend TUsbcLogicalEndpoint::~TUsbcLogicalEndpoint();
-    //
-    // --- Platform Independent Layer (PIL) ---
-    //
-
-
-private:
-    /**
-     * Two-phase constructor used by the friend classes that receive
-     * the registration calls for peripheral controllers.
-     *
-     * @param aPeripheralControllerIf Reference to the Peripheral
-     *   Controller interface implemented by the registering PSL.
-     *
-     * @param aProperties Reference to an object describing the
-     *   static properties of the Peripheral Controller. The PIL
-     *   layer requires that the supplied reference remains valid
-     *   indefinitely, as a Peripheral Controller cannot unregister.
-     *
-     * @param aIsOtgPort ETrue if this Peripheral Controller is part
-     *   of an OTG port. EFalse otherwise.
-     *
-     * @return Pointer to a new instance or NULL if failed
-     */
-    IMPORT_C static DUsbClientController* Create(UsbShai::MPeripheralControllerIf& aPeripheralControllerIf, 
-                                                 const UsbShai::TPeripheralControllerProperties& aProperties,
-                                                 TBool aIsOtgPort);
-    
-
-public:
-
-    //
-    // --- The following functions constitute the PIL interface to the LDD ---
-    //
-    virtual ~DUsbClientController();
-    IMPORT_C void DisableClientStack();
-    IMPORT_C void EnableClientStack();
-    IMPORT_C TBool IsActive();
-    IMPORT_C TInt RegisterClientCallback(TUsbcClientCallback& aCallback);
-    IMPORT_C static DUsbClientController* UsbcControllerPointer(TInt aUdc=0);
-    IMPORT_C void EndpointCaps(const DBase* aClientId, TDes8 &aCapsBuf) const;
-    IMPORT_C void DeviceCaps(const DBase* aClientId, TDes8 &aCapsBuf) const;
-    IMPORT_C TInt SetInterface(const DBase* aClientId, DThread* aThread, TInt aInterfaceNum,
-                               TUsbcClassInfo& aClass, TDesC8* aString, TInt aTotalEndpointsUsed,
-                               const TUsbcEndpointInfo aEndpointData[], TInt (*aRealEpNumbers)[6],
-                               TUint32 aFeatureWord);
-    IMPORT_C TInt SetInterface(const DBase* aClientId, DThread* aThread,
-                                                 TInt aInterfaceNum, TUsbcClassInfo& aClass,
-                                                 TDesC8* aString, TInt aTotalEndpointsUsed,
-                                                 const TUsbcEndpointInfoArray aEndpointData,
-                                                 TInt aRealEpNumbers[], TUint32 aFeatureWord);
-    IMPORT_C TInt ReleaseInterface(const DBase* aClientId, TInt aInterfaceNum);
-    IMPORT_C TInt ReEnumerate();
-    IMPORT_C TInt PowerUpUdc();
-    IMPORT_C TInt UsbConnect();
-    IMPORT_C TInt UsbDisconnect();
-    IMPORT_C TInt RegisterForStatusChange(TUsbcStatusCallback& aCallback);
-    IMPORT_C TInt DeRegisterForStatusChange(const DBase* aClientId);
-    IMPORT_C TInt RegisterForEndpointStatusChange(TUsbcEndpointStatusCallback& aCallback);
-    IMPORT_C TInt DeRegisterForEndpointStatusChange(const DBase* aClientId);
-    IMPORT_C TInt GetInterfaceNumber(const DBase* aClientId, TInt& aInterfaceNum) const;
-    IMPORT_C TInt DeRegisterClient(const DBase* aClientId);
-    IMPORT_C TInt Ep0PacketSize() const;
-    IMPORT_C TInt Ep0Stall(const DBase* aClientId);
-    IMPORT_C void SendEp0StatusPacket(const DBase* aClientId);
-    IMPORT_C UsbShai::TUsbPeripheralState GetDeviceStatus() const;
-    IMPORT_C TEndpointState GetEndpointStatus(const DBase* aClientId, TInt aEndpointNum) const;
-    IMPORT_C TInt SetupReadBuffer(TUsbcRequestCallback& aCallback);
-    IMPORT_C TInt SetupWriteBuffer(TUsbcRequestCallback& aCallback);
-    IMPORT_C void CancelReadBuffer(const DBase* aClientId, TInt aRealEndpoint);
-    IMPORT_C void CancelWriteBuffer(const DBase* aClientId, TInt aRealEndpoint);
-    IMPORT_C TInt HaltEndpoint(const DBase* aClientId, TInt aEndpointNum);
-    IMPORT_C TInt ClearHaltEndpoint(const DBase* aClientId, TInt aEndpointNum);
-    IMPORT_C TInt SetDeviceControl(const DBase* aClientId);
-    IMPORT_C TInt ReleaseDeviceControl(const DBase* aClientId);
-    IMPORT_C TUint EndpointZeroMaxPacketSizes() const;
-    IMPORT_C TInt SetEndpointZeroMaxPacketSize(TInt aMaxPacketSize);
-    IMPORT_C TInt GetDeviceDescriptor(DThread* aThread, TDes8& aDeviceDescriptor);
-    IMPORT_C TInt SetDeviceDescriptor(DThread* aThread, const TDes8& aDeviceDescriptor);
-    IMPORT_C TInt GetDeviceDescriptorSize(DThread* aThread, TDes8& aSize);
-    IMPORT_C TInt GetConfigurationDescriptor(DThread* aThread, TDes8& aConfigurationDescriptor);
-    IMPORT_C TInt SetConfigurationDescriptor(DThread* aThread, const TDes8& aConfigurationDescriptor);
-    IMPORT_C TInt GetConfigurationDescriptorSize(DThread* aThread, TDes8& aSize);
-    IMPORT_C TInt SetOtgDescriptor(DThread* aThread, const TDesC8& aOtgDesc);
-    IMPORT_C TInt GetOtgDescriptor(DThread* aThread, TDes8& aOtgDesc) const;
-    IMPORT_C TInt GetOtgFeatures(DThread* aThread, TDes8& aFeatures) const;
-    IMPORT_C TInt GetCurrentOtgFeatures(TUint8& aFeatures) const;
-    IMPORT_C TInt RegisterForOtgFeatureChange(TUsbcOtgFeatureCallback& aCallback);
-    IMPORT_C TInt DeRegisterForOtgFeatureChange(const DBase* aClientId);
-    IMPORT_C TInt GetInterfaceDescriptor(DThread* aThread, const DBase* aClientId, TInt aSettingNum,
-                                         TDes8& aInterfaceDescriptor);
-    IMPORT_C TInt SetInterfaceDescriptor(DThread* aThread, const DBase* aClientId, TInt aSettingNum,
-                                         const TDes8& aInterfaceDescriptor);
-    IMPORT_C TInt GetInterfaceDescriptorSize(DThread* aThread, const DBase* aClientId, TInt aSettingNum,
-                                             TDes8& aSize);
-    IMPORT_C TInt GetEndpointDescriptor(DThread* aThread, const DBase* aClientId, TInt aSettingNum,
-                                        TInt aEndpointNum, TDes8& aEndpointDescriptor);
-    IMPORT_C TInt SetEndpointDescriptor(DThread* aThread, const DBase* aClientId, TInt aSettingNum,
-                                        TInt aEndpointNum, const TDes8& aEndpointDescriptor);
-    IMPORT_C TInt GetEndpointDescriptorSize(DThread* aThread, const DBase* aClientId, TInt aSettingNum,
-                                            TInt aEndpointNum, TDes8& aSize);
-    IMPORT_C TInt GetDeviceQualifierDescriptor(DThread* aThread, TDes8& aDeviceQualifierDescriptor);
-    IMPORT_C TInt SetDeviceQualifierDescriptor(DThread* aThread, const TDes8& aDeviceQualifierDescriptor);
-    IMPORT_C TInt GetOtherSpeedConfigurationDescriptor(DThread* aThread, TDes8& aConfigurationDescriptor);
-    IMPORT_C TInt SetOtherSpeedConfigurationDescriptor(DThread* aThread, const TDes8& aConfigurationDescriptor);
-    IMPORT_C TInt GetCSInterfaceDescriptorBlock(DThread* aThread, const DBase* aClientId, TInt aSettingNum,
-                                                TDes8& aInterfaceDescriptor);
-    IMPORT_C TInt SetCSInterfaceDescriptorBlock(DThread* aThread, const DBase* aClientId, TInt aSettingNum,
-                                                const TDes8& aInterfaceDescriptor, TInt aSize);
-    IMPORT_C TInt GetCSInterfaceDescriptorBlockSize(DThread* aThread, const DBase* aClientId,
-                                                    TInt aSettingNum, TDes8& aSize);
-    IMPORT_C TInt GetCSEndpointDescriptorBlock(DThread* aThread, const DBase* aClientId, TInt aSettingNum,
-                                               TInt aEndpointNum, TDes8& aEndpointDescriptor);
-    IMPORT_C TInt SetCSEndpointDescriptorBlock(DThread* aThread, const DBase* aClientId, TInt aSettingNum,
-                                               TInt aEndpointNum, const TDes8& aEndpointDescriptor,
-                                               TInt aSize);
-    IMPORT_C TInt GetCSEndpointDescriptorBlockSize(DThread* aThread, const DBase* aClientId, TInt aSettingNum,
-                                                   TInt aEndpointNum, TDes8& aSize);
-    IMPORT_C TInt GetStringDescriptorLangId(DThread* aThread, TDes8& aLangId);
-    IMPORT_C TInt SetStringDescriptorLangId(TUint16 aLangId);
-    IMPORT_C TInt GetManufacturerStringDescriptor(DThread* aThread, TDes8& aString);
-    IMPORT_C TInt SetManufacturerStringDescriptor(DThread* aThread, const TDes8& aString);
-    IMPORT_C TInt RemoveManufacturerStringDescriptor();
-    IMPORT_C TInt GetProductStringDescriptor(DThread* aThread, TDes8& aString);
-    IMPORT_C TInt SetProductStringDescriptor(DThread* aThread, const TDes8& aString);
-    IMPORT_C TInt RemoveProductStringDescriptor();
-    IMPORT_C TInt GetSerialNumberStringDescriptor(DThread* aThread, TDes8& aString);
-    IMPORT_C TInt SetSerialNumberStringDescriptor(DThread* aThread, const TDes8& aString);
-    IMPORT_C TInt RemoveSerialNumberStringDescriptor();
-    IMPORT_C TInt GetConfigurationStringDescriptor(DThread* aThread, TDes8& aString);
-    IMPORT_C TInt SetConfigurationStringDescriptor(DThread* aThread, const TDes8& aString);
-    IMPORT_C TInt RemoveConfigurationStringDescriptor();
-    IMPORT_C TInt GetStringDescriptor(DThread* aThread, TUint8 aIndex, TDes8& aString);
-    IMPORT_C TInt SetStringDescriptor(DThread* aThread, TUint8 aIndex, const TDes8& aString);
-    IMPORT_C TInt RemoveStringDescriptor(TUint8 aIndex);
-    IMPORT_C TBool QueryEndpointResource(const DBase* aClientId, TInt aEndpointNum,
-                                         TUsbcEndpointResource aResource);
-    IMPORT_C TInt EndpointPacketSize(const DBase* aClientId, TInt aEndpointNum);
-    
-    // Called by LDD
-    IMPORT_C TDfcQue*  DfcQ(TInt aIndex);
-    IMPORT_C void DumpRegisters();
-    IMPORT_C TInt SignalRemoteWakeup();
-    IMPORT_C TBool CurrentlyUsingHighSpeed();
-    
-    TInt RegisterUdc(TInt aUdc);
-
-protected:
-
-    // From base class MUsbPeripheralPilCallbackIf
-    void EnablePeripheralStack();
-    void DisablePeripheralStack();
-    void SetOtgObserver(MUsbOtgPeripheralObserverIf* aObserver);
-
-    // Function derived from MUsbPeripheralPilCallbackIf
-    UsbShai::TControlStage EnquireEp0NextStage(const TUint8* aSetupBuf) const;
-    TInt Ep0RequestComplete(TInt aRealEndpoint, TInt aCount, TInt aError,UsbShai::TControlPacketType aPktType);
-    void EndpointRequestComplete(UsbShai::TUsbPeripheralRequest* aCallback);
-    TInt DeviceEventNotification(TUsbcDeviceEvent aEvent);
-    void MoveToAddressState();
-    TInt ProcessSetConfiguration(const TUsbcSetup& aPacket);
-    void HandleHnpRequest(TInt aHnpState);
-    void GetEp0RxBufferInfo(TUint8*& aBuffer, TInt& aBufferLen); 
-    void SetRmWakeupStatusEnabled(TBool aRmEnabled);
-    UsbShai::TUsbPeripheralState DeviceStatus() const;
-    TBool Ep0ReceivedNonStdRequest();
-    
-    // Functions derived from MControlTransferIf
-    // PSL -> PIL
-    void ProcessDataInPacket(TInt aCount,TInt aErrCode);
-    void ProcessStatusInPacket(TInt aErrCode);
-    void ProcessDataOutPacket(TInt aCount,TInt aErrCode);
-    void ProcessStatusOutPacket(TInt aErrCode);
-    void ProcessSetupPacket(TInt aCount,TInt aErrCode);
-    
-    // Request from PIL -> PSL
-    TInt ProcessSetupEndpointZeroRead();
-    TInt ProcessSetupEndpointZeroWrite(const TUint8* aBuffer, TInt aLength, TBool aZlpReqd=EFalse);
-    TInt ProcessSendEp0ZeroByteStatusPacket();
-    TInt ProcessStallEndpoint(TInt aRealEndpoint);
-    
-    // Flow control PIL <--> PSL
-    void ProcessEp0SetupPacketProceed();
-    void ProcessEp0DataPacketProceed();
-    
-    // Functions from MChargerDetectorObserverIf
-    void NotifyPortType(UsbShai::TPortType aPortType);
-    //
-    //
-    // --- Functions and data members provided by PIL, called by PSL ---
-    //
-private:
-    struct TUsbPeripheralDescriptorPool
-        {
-        TUsbcDeviceDescriptor* iDeviceDesc;
-        TUsbcConfigDescriptor* iConfigDesc;
-        TUsbcLangIdDescriptor* iLangId;
-        TUsbcStringDescriptor* iManufacturer;
-        TUsbcStringDescriptor* iProduct;
-        TUsbcStringDescriptor* iSerialNum;
-        TUsbcStringDescriptor* iConfig;
-        TUsbcOtgDescriptor* iOtgDesc;
-        };
-        
-private:
-    // Internal functions that used in Construct only
-    // This function will new a set of descriptors
-    TBool CreateDescriptors(TUsbPeripheralDescriptorPool& aOutput);
-    
-    TBool Initialise(TUsbPeripheralDescriptorPool& aDescPool,
-                     const UsbShai::TUsbPeripheralEndpointCaps* aEndpointCaps,
-                     TInt aTotalEndpoint);                    
-
-    DUsbClientController(UsbShai::MPeripheralControllerIf&               aPeripheralControllerIf, 
-                         const UsbShai::TPeripheralControllerProperties& aProperties,
-                         TBool                                  aIsOtgPort);
-    
-    TInt Construct();
-    
-    void ProcessStandardRequest(TInt aCount,const TUsbcSetup& aPacket);    
-    void ProcessNonStandardRequest(TInt aCount,const TUsbcSetup& aPacket);
-    
-    const DBase* FindNonStandardRequestClient(TUint8 aPacketTypeDestination,const TUsbcSetup& aPacket);
-    
-    TInt SetupEp0StateMachine();
-    
-private:
-    
-    /** This info can be used by the PSL before sending ZLPs.
-
-        @publishedPartner @released
-    */
-    TBool iEp0ReceivedNonStdRequest;
-
-    /** True if RMW is currently enabled (set by either PIL or PSL).
-
-        @publishedPartner @released
-    */
-    TBool iRmWakeupStatus_Enabled;
-
-    /** Ep0 incoming (rx) data is placed here (one packet).
-
-        @publishedPartner @released
-    */
-    TUint8 iEp0_RxBuf[KUsbcBufSzControl];
-
-private:
-
-    //
-    // --- Private member functions (used by PIL) ---
-    //
-    TInt DeRegisterClientCallback(const DBase* aClientId);
-    TBool CheckEpAvailability(TInt aEndpointsUsed, const TUsbcEndpointInfoArray& aEndpointData, TInt aIfcNumber)
-        const;
-    TUsbcInterface* CreateInterface(const DBase* aClientId, TInt aIfc, TUint32 aFeatureWord);
-    TInt CreateEndpoints(TUsbcInterface* aIfc, TInt aEndpointsUsed, const TUsbcEndpointInfoArray& aEndpointData,
-                         TInt *aRealEpNumbers);
-    TInt SetupIfcDescriptor(TUsbcInterface* aIfc, TUsbcClassInfo& aClass, DThread* aThread, TDesC8* aString,
-                            const TUsbcEndpointInfoArray& aEndpointData);
-    TInt ClientId2InterfaceNumber(const DBase* aClientId) const;
-    TUsbcInterfaceSet* ClientId2InterfacePointer(const DBase* aClientId) const;
-    const DBase* InterfaceNumber2ClientId(TInt aIfcSet) const;
-    TUsbcInterfaceSet* InterfaceNumber2InterfacePointer(TInt aIfcSet) const;
-    inline const DBase* PEndpoint2ClientId(TInt aRealEndpoint) const;
-    inline TInt PEndpoint2LEndpoint(TInt aRealEndpoint) const;
-    TInt ActivateHardwareController();
-    void DeActivateHardwareController();
-    void DeleteInterfaceSet(TInt aIfcSet);
-    void DeleteInterface(TInt aIfcSet, TInt aIfc);
-    void CancelTransferRequests(TInt aRealEndpoint);
-    void DeleteRequestCallback(const DBase* aClientId, TInt aEndpointNum, UsbShai::TTransferDirection aTransferDir);
-    void DeleteRequestCallbacks(const DBase* aClientId);
-    void StatusNotify(UsbShai::TUsbPeripheralState aState, const DBase* aClientId=NULL);
-    void EpStatusNotify(TInt aRealEndpoint);
-    void OtgFeaturesNotify();
-    void RunClientCallbacks();
-    void ProcessDataTransferDone(TUsbcRequestCallback& aRcb);
-    void NextDeviceState(UsbShai::TUsbPeripheralState aNextState);
-    TInt ProcessSuspendEvent();
-    TInt ProcessSuspendEventProceed();
-    TInt ProcessResumeEvent();
-    TInt ProcessResetEvent(TBool aPslUpcall=ETrue);
-    TInt ProcessVbusRisenEvent();
-    TInt ProcessVbusFallenEvent();
-    
-    void ProcessGetDeviceStatus(const TUsbcSetup& aPacket);
-    void ProcessGetInterfaceStatus(const TUsbcSetup& aPacket);
-    void ProcessGetEndpointStatus(const TUsbcSetup& aPacket);
-    void ProcessSetClearDevFeature(const TUsbcSetup& aPacket);
-    void ProcessSetClearIfcFeature(const TUsbcSetup& aPacket);
-    void ProcessSetClearEpFeature(const TUsbcSetup& aPacket);
-    void ProcessSetAddress(const TUsbcSetup& aPacket);
-    void ProcessGetDescriptor(const TUsbcSetup& aPacket);
-    void ProcessSetDescriptor(const TUsbcSetup& aPacket);
-    void ProcessGetConfiguration(const TUsbcSetup& aPacket);
-    void ProcessGetInterface(const TUsbcSetup& aPacket);
-    void ProcessSetInterface(const TUsbcSetup& aPacket);
-    void ProcessSynchFrame(const TUsbcSetup& aPacket);
-    
-    void ProceedSetDescriptor();
-    void ProcessDeviceEventNotification(TUsbcDeviceEvent aEvent);
-    
-    void SetClearHaltFeature(TInt aRealEndpoint, TUint8 aRequest);
-    TInt ClearHaltFeature(TInt aRealEndpoint);
-    void ChangeConfiguration(TUint16 aValue);
-    void InterfaceSetup(TUsbcInterface* aIfc);
-    void InterfaceSetTeardown(TUsbcInterfaceSet* aIfc);
-    void ChangeInterface(TUsbcInterface* aIfc);
-    TInt DoForEveryEndpointInUse(TInt (DUsbClientController::*aFunction)(TInt), TInt& aCount);
-    void EnterFullSpeed();
-    void EnterHighSpeed();
-    TInt EvaluateOtgConnectFlags();
-    inline const TUsbcConfiguration* CurrentConfig() const;
-    inline TUsbcConfiguration* CurrentConfig();
-    inline TBool InterfaceExists(TInt aNumber) const;
-    inline TBool EndpointExists(TUint aAddress) const;
-    void Buffer2Setup(const TAny* aBuf, TUsbcSetup& aSetup) const;
-    inline TUint EpIdx2Addr(TUint aRealEndpoint) const;
-    inline TUint EpAddr2Idx(TUint aAddress) const;
-    inline void SetEp0DataOutVars(const DBase* aClientId = NULL);
-    inline void ResetEp0DataOutVars();
-    inline TBool IsInTheStatusList(const TUsbcStatusCallback& aCallback);
-    inline TBool IsInTheEpStatusList(const TUsbcEndpointStatusCallback& aCallback);
-    inline TBool IsInTheOtgFeatureList(const TUsbcOtgFeatureCallback& aCallback);
-    inline TBool IsInTheRequestList(const TUsbcRequestCallback& aCallback);
-    static void ReconnectTimerCallback(TAny* aPtr);
-    static void CableStatusTimerCallback(TAny* aPtr);
-    static void PowerUpDfc(TAny* aPtr);
-    static void PowerDownDfc(TAny* aPtr);
-    static void DeviceEventNotifyDfc(TAny* aPtr);
-    static void ThreadContextFinderDfc(TAny* aPtr);
-
-private:
-
-    //
-    // --- Private data members ---
-    //
-
-    static DUsbClientController* UsbClientController[KUsbcMaxUdcs];
-
-    TInt iDeviceTotalEndpoints;                                 // number of endpoints reported by PSL
-    TInt iDeviceUsableEndpoints;                                // number of endpoints reported to LDD
-    
-    UsbShai::TUsbPeripheralState iDeviceState;                              // states as of USB spec chapter 9.1
-    UsbShai::TUsbPeripheralState iDeviceStateB4Suspend;                     // state before entering suspend state
-
-    TBool iSelfPowered;                                         // true if device is capable of beeing self-powered
-    TBool iRemoteWakeup;                                        // true if device is capable of signalling rmwakeup
-    TBool iHardwareActivated;                                   // true if controller silicon is in operating state
-    TBool iOtgSupport;                                          // true if OTG is supported by this device
-    TUint8 iOtgFuncMap;                                         // bitmap indicating OTG extension features
-    TBool iHighSpeed;                                           // true if currently operating at high-speed
-    
-    TInt iEp0MaxPacketSize;                                     // currently configured max packet size for Ep0    
-    const DBase* iEp0ClientId;                                  // see comment at the begin of ps_usbc.cpp
-    TUint16 iEp0DataReceived;                                   // indicates how many bytes have already been received
-    TBool iEp0WritePending;                                     // true if a write on ep0 has been set up
-    TBool iEp0ClientDataTransmitting;                           // true if ep0's in DATA_IN on behalf of a client
-    const DBase* iEp0DeviceControl;                             // Device Ep0 requests are delivered to this LDD
-    
-    TUsbcDescriptorPool iDescriptors;                           // the descriptors as of USB spec chapter 9.5
-    TUint8 iCurrentConfig;                                      // bConfigurationValue of current Config (1-based!)
-    RPointerArray<TUsbcConfiguration> iConfigs;                 // the root of the modelled USB device
-    TUsbcPhysicalEndpoint iRealEndpoints[KUsbcEpArraySize];     // array will be filled once at startup
-    TUint8 iEp0_TxBuf[KUsbcBufSz_Ep0Tx];                        // ep0 outgoing (tx) data is placed here
-#ifdef USB_SUPPORTS_SET_DESCRIPTOR_REQUEST
-    TUint8 iEp0_RxCollectionBuf[KUsbcBufSz_Ep0Rx];              // used for (optional) SET_DESCRIPTOR request
-#endif
-    TInt iEp0_RxExtraCount;                                     // number of bytes received but not yet delivered
-    TBool iEp0_RxExtraData;                                     // true if iEp0_RxExtraCount is valid
-    TInt iEp0_TxNonStdCount;                                    // number of bytes requested by non-std Ep0 request
-    
-    TUsbcRequestCallback* iRequestCallbacks[KUsbcEpArraySize];  // xfer requests; indexed by real ep number
-    TSglQue<TUsbcRequestCallback> iEp0ReadRequestCallbacks;     // list of ep0 read requests
-    TSglQue<TUsbcClientCallback> iClientCallbacks;              // registered LDD clients and their callback functions
-    TSglQue<TUsbcStatusCallback> iStatusCallbacks;              // list of device state notification requests
-    TSglQue<TUsbcEndpointStatusCallback> iEpStatusCallbacks;    // list of endpoint state notification requests
-    TSglQue<TUsbcOtgFeatureCallback> iOtgCallbacks;             // list of OTG feature change requests
-    
-    NTimer iReconnectTimer;                                     // implements USB re-enumeration delay
-    NTimer iCableStatusTimer;                                   // implements USB cable status detection delay
-    DUsbcPowerHandler* iPowerHandler;                           // pointer to USB power handler object
-    TSpinLock iUsbLock;                                         // implement SMP for USB PDD and LDD
-    NFastMutex iMutex;                                          // To pretect interface set with NFastMutex
-    UsbShai::MPeripheralControllerIf& iController;              // PSL code
-    
-    const UsbShai::TPeripheralControllerProperties& iControllerProperties;   // Static configuration from PSL
-    TBool iIsOtgPort;                                               // Is this instance a driver for otg port,
-                                                                    // Set at construction time.
-
-    /**
-     * Pointer to the currently set OTG Observer, if any. Not owned.
-     */
-	MUsbOtgPeripheralObserverIf* iOtgObserver;  // Otg interface which is used to listen event from DeviceEventNotification
-    
-    DControlTransferManager* iConTransferMgr;    // Usb Control transfer manager, responsible for chaptor9
-    
-    TInt iLastError;                            // Used by chaptor9 sm. No else.
-    TBool iSetupPacketPending;                  // Indicate whether the no-req-callback data is a setup packet
-                                                            
-    TUsbPeriDeviceEventQueue iDevEventQueue;    // PSL can call DeviceEventNotification(...) at any context, 
-                                                // but for PIL, we want to serialize the execution of each event
-    
-    // The thread context for the DfcQ pass by PSL to us.
-    NThread* iCommonDfcQThread;
-    
-protected:
-    TDfc iPowerUpDfc;                         // queued by power handler upon power-up
-    TDfc iPowerDownDfc;                       // queued by power handler upon power-down
-    TDfc iDeviceEventNotifyDfc;               // queued by device event notification
-    TDfc iThreadContextFinder;                // this is used to find which thread does the DfcQ passed by PSL
-                                              // is runing.
-
-private:
-    TBool iStandby;                           // toggled by power handler as appropriate
-    TBool iStackIsActive;                     // client stack's function is usable
-    TBool iClientSupportReady;                // user-side USB Client support is loaded & active
-    TBool iUsbResetDeferred;                  // set when user-side wasn't ready yet
-
-public:
-    // FIXME: These used to be filled by the OTG component Dummy DCD
-    // so that the PIL layer can call it to enable and disable the D+
-    // pull-up. This mechanism is no longer used
-    TInt (*iEnablePullUpOnDPlus)(TAny* aOtgContext);
-    TInt (*iDisablePullUpOnDPlus)(TAny* aOtgContext);
-    TAny* iOtgContext;
-    };
-    
-/** Simple queue of status changes to be recorded.
-    Items are fetched by userside when able.
-*/
-class TUsbcDeviceStatusQueue
-    {
-public:
-    TUsbcDeviceStatusQueue();
-    void AddStatusToQueue(TUint32 aDeviceStatus);
-    TInt GetDeviceQueuedStatus(TUint32& aDeviceStatus);
-    void FlushQueue();
-
-private:
-    TUint32 iDeviceStatusQueue[KUsbDeviceStatusQueueDepth];
-    TInt iStatusQueueHead;
-    };
-    
-#include <usb/usbcshared.inl>
-
-#endif    // __USBCSHARED_H__