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Annotation of XNU/iokit/IOKit/firewire/IOFWIsochChannel.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /*
        !            23:  * Copyright (c) 1999 Apple Computer, Inc.  All rights reserved.
        !            24:  *
        !            25:  * HISTORY
        !            26:  *
        !            27:  */
        !            28: 
        !            29: 
        !            30: #ifndef _IOKIT_IOFWISOCHCHANNEL_H
        !            31: #define _IOKIT_IOFWISOCHCHANNEL_H
        !            32: 
        !            33: #include <libkern/c++/OSObject.h>
        !            34: #include <IOKit/firewire/IOFWRegs.h>
        !            35: 
        !            36: enum
        !            37: {
        !            38:     kFWIsochChannelUnknownCondition    = 0,
        !            39:     kFWIsochChannelNotEnoughBandwidth  = 1,
        !            40:     kFWIsochChannelChannelNotAvailable = 2
        !            41: };
        !            42: 
        !            43: class IOFireWireController;
        !            44: class IOFWIsochChannel;
        !            45: class IOFWIsochPort;
        !            46: class OSSet;
        !            47: 
        !            48: typedef IOReturn       (FWIsochChannelForceStopNotificationProc) (
        !            49:         void *                         refCon,
        !            50:        IOFWIsochChannel *              isochChannelID,
        !            51:        UInt32                          stopCondition);
        !            52: 
        !            53: typedef FWIsochChannelForceStopNotificationProc *FWIsochChannelForceStopNotificationProcPtr;
        !            54: 
        !            55: class IOFWIsochChannel : public OSObject
        !            56: {
        !            57:     OSDeclareDefaultStructors(IOFWIsochChannel)
        !            58: 
        !            59: protected:
        !            60:     IOFireWireController *fControl;
        !            61:     FWIsochChannelForceStopNotificationProcPtr fStopProc;
        !            62:     void *             fStopRefCon;
        !            63:     IOFWIsochPort *    fTalker;
        !            64:     OSSet *            fListeners;
        !            65:     bool               fDoIRM;
        !            66:     UInt32             fBandwidth;     // Allocation units used
        !            67:     UInt32             fMBitSec;
        !            68:     IOFWSpeed          fPrefSpeed;
        !            69:     IOFWSpeed          fSpeed;         // Actual speed used
        !            70:     UInt32             fChannel;       // Actual channel used
        !            71: 
        !            72:     static void                threadFunc(void * arg, void *);
        !            73:     virtual IOReturn   updateBandwidth(bool claim);
        !            74:     virtual void       reallocBandwidth();     
        !            75:     virtual void       free();
        !            76: 
        !            77: public:
        !            78:     // Called from IOFireWireController
        !            79:     virtual bool init(IOFireWireController *control,
        !            80:                bool doIRM, UInt32 bandwidth, IOFWSpeed prefSpeed,
        !            81:                FWIsochChannelForceStopNotificationProcPtr stopProc,
        !            82:                void *stopRefCon);
        !            83:     virtual void handleBusReset();
        !            84: 
        !            85:     // Called by clients
        !            86:     virtual IOReturn setTalker(IOFWIsochPort *talker);
        !            87:     virtual IOReturn addListener(IOFWIsochPort *listener);
        !            88: 
        !            89:     virtual IOReturn allocateChannel();
        !            90:     virtual IOReturn releaseChannel();
        !            91:     virtual IOReturn start();
        !            92:     virtual IOReturn stop();
        !            93: };
        !            94: 
        !            95: #endif /* ! _IOKIT_IOFWISOCHCHANNEL_H */
        !            96: 

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