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Annotation of XNU/iokit/IOKit/firewire/IOFWDCLTranslator.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:  * A DCL program to interpret (in software) a program that's too complicated
        !            26:  * for the DMA engine.
        !            27:  *
        !            28:  * HISTORY
        !            29:  *
        !            30:  */
        !            31: 
        !            32: 
        !            33: #ifndef _IOKIT_IOFWDCLTRANSLATOR_H
        !            34: #define _IOKIT_IOFWDCLTRANSLATOR_H
        !            35: 
        !            36: #include <libkern/c++/OSObject.h>
        !            37: #include <IOKit/firewire/IOFWDCLProgram.h>
        !            38: 
        !            39: class IODCLTranslator : public IODCLProgram
        !            40: {
        !            41:     OSDeclareAbstractStructors(IODCLTranslator)
        !            42: 
        !            43: protected:
        !            44:     enum
        !            45:     {
        !            46:         kNumPingPongs                  = 2,
        !            47:         kNumPacketsPerPingPong         = 500,
        !            48:         kMaxIsochPacketSize            = 1000,
        !            49:         kPingPongBufferSize            =
        !            50:                 kNumPingPongs * kNumPacketsPerPingPong * kMaxIsochPacketSize
        !            51:     };
        !            52: 
        !            53:     // Opcodes and buffer for pingpong program
        !            54:     DCLLabel                   fStartLabel;
        !            55:     DCLTransferPacket          fTransfers[kNumPingPongs*kNumPacketsPerPingPong];
        !            56:     DCLCallProc                        fCalls[kNumPingPongs];
        !            57:     DCLJump                    fJumpToStart;
        !            58:     UInt8                      fBuffer[kPingPongBufferSize];
        !            59: 
        !            60:     IODCLProgram *             fHWProgram;             // Hardware program executing our opcodes
        !            61:     DCLCommandPtr              fToInterpret;           // The commands to interpret
        !            62:     DCLCommandPtr              fCurrentDCLCommand;     // Current command to interpret
        !            63:     int                                fPingCount;             // Are we pinging or ponging?
        !            64: 
        !            65:     UInt32                     fPacketHeader;
        !            66: 
        !            67:     static void ListeningDCLPingPongProc(DCLCommandPtr pDCLCommand);
        !            68:     static void TalkingDCLPingPongProc(DCLCommandPtr pDCLCommand);
        !            69: 
        !            70: public:
        !            71:     virtual bool init(DCLCommandPtr toInterpret);
        !            72:     virtual IOReturn allocateHW(IOFWSpeed speed, UInt32 chan);
        !            73:     virtual IOReturn releaseHW();
        !            74:     virtual IOReturn notify(UInt32 notificationType,
        !            75:        DCLCommandPtr *dclCommandList, UInt32 numDCLCommands);
        !            76:     virtual void stop();
        !            77: 
        !            78:     DCLCommandPtr getTranslatorOpcodes() {return (DCLCommandPtr)&fStartLabel;}
        !            79:     void setHWProgram(IODCLProgram *program) {fHWProgram = program;};
        !            80: };
        !            81: 
        !            82: class IODCLTranslateTalk : public IODCLTranslator
        !            83: {
        !            84:     OSDeclareDefaultStructors(IODCLTranslateTalk)
        !            85: 
        !            86: protected:
        !            87: 
        !            88: public:
        !            89:     virtual IOReturn compile(IOFWSpeed speed, UInt32 chan);
        !            90:     virtual IOReturn start();
        !            91: 
        !            92: };
        !            93: class IODCLTranslateListen : public IODCLTranslator
        !            94: {
        !            95:     OSDeclareDefaultStructors(IODCLTranslateListen)
        !            96: 
        !            97: protected:
        !            98: 
        !            99: public:
        !           100:     virtual IOReturn compile(IOFWSpeed speed, UInt32 chan);
        !           101:     virtual IOReturn start();
        !           102: 
        !           103: };
        !           104: #endif /* ! _IOKIT_IOFWDCLPROGRAM_H */
        !           105: 

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