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Annotation of XNU/iokit/IOKit/firewire/IOFWDCLTranslator.h, revision 1.1.1.1

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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