IOFWUserIsochPort.h   [plain text]

/*
 * Copyright (c) 1998-2002 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
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 * @APPLE_LICENSE_HEADER_END@
 */
/*
 *  IOFWUserIsochPortProxy.h
 *  IOFireWireFamily
 *
 *  Created by NWG on Tue Mar 20 2001.
 *  Copyright (c) 2001 Apple Computer, Inc. All rights reserved.
 *
 */

#ifndef _IOKIT_IOFWUserIsochPortProxy_H
#define _IOKIT_IOFWUserIsochPortProxy_H

// public
#import <IOKit/firewire/IOFireWireBus.h>
#import <IOKit/firewire/IOFWIsochPort.h>

// private
#import "IOFWUserIsochPort.h"
#import "IOFireWireUserClient.h"

class IOFWUserIsochPort: public IOFWIsochPort
{
	OSDeclareDefaultStructors(IOFWUserIsochPort)

 public:	
	virtual bool	init() ;

	// Return maximum speed and channels supported
	// (bit n set = chan n supported)
    virtual IOReturn getSupported(IOFWSpeed &maxSpeed, UInt64 &chanSupported) ;

	// Allocate hardware resources for port
    virtual IOReturn allocatePort(IOFWSpeed speed, UInt32 chan) ;
    virtual IOReturn releasePort() ;	// Free hardware resources
    virtual IOReturn start() ;			// Start port processing packets
    virtual IOReturn stop() ;			// Stop processing packets

 protected:
	IOFWSpeed	fMaxSpeed ;
	UInt32		fChanSupported ;
} ;

class IOFWUserIsochPortProxy: public OSObject
{
	OSDeclareDefaultStructors(IOFWUserIsochPortProxy)
	
	protected:
	
		IOFireWireUserClient*			fUserClient ;
		IOFWIsochPort*					fPort ;
		Boolean							fPortStarted ;
		Boolean							fPortAllocated ;
		IOFireWireBus::DCLTaskInfo 		fTaskInfo;
		IORecursiveLock*				fLock ;
		
	public:
	
		virtual Boolean				init( IOFireWireUserClient*  userclient ) ;
		virtual IOReturn 			getSupported( IOFWSpeed & maxSpeed, UInt64 & chanSupported ) ;
		virtual IOReturn 			allocatePort(IOFWSpeed speed, UInt32 chan) ;
		virtual IOReturn 			releasePort() ;	// Free hardware resources
		virtual IOReturn 			start() ;			// Start port processing packets
		virtual IOReturn 			stop() ;			// Stop processing packets
		const IOFWIsochPort* 		getPort() const { return fPort; }
		virtual IOReturn			createPort() ;	
		virtual void				free() ;

		inline void					lock() ;
		inline void					unlock() ;
} ;

inline void IOFWUserIsochPortProxy::lock()
{
	IORecursiveLockLock( fLock ) ;
}

inline void IOFWUserIsochPortProxy::unlock()
{
	IORecursiveLockUnlock( fLock ) ;
}

#pragma mark -
class IOFWUserLocalIsochPortProxy: public IOFWUserIsochPortProxy
{
	OSDeclareDefaultStructors(IOFWUserLocalIsochPortProxy)
	
	protected:
	
		IOMemoryDescriptor*		fUserDCLProgramMem ;
		IOByteCount				fDCLProgramBytes ;
		IOMemoryDescriptor*		fUserBufferMem ;
		Boolean					fUserBufferMemPrepared ;
		IOMemoryMap*			fUserBufferMemMap ;
		Boolean					fUserDCLProgramMemPrepared ;
		
		UInt8*					fKernDCLProgramBuffer ;
		DCLCommand*				fKernDCLProgramStart ;
		
		Boolean					fTalking ;
		UInt32					fStartState ;
		UInt32					fStartMask ;
		UInt32					fStartEvent ;
	
		// lookup table
		UInt32					fUserToKernelDCLLookupTableLength ;
		DCLCommand**			fUserToKernelDCLLookupTable ;
		OSAsyncReference		fStopTokenAsyncRef ;
		void*					fUserObj ;
		
	public:

		virtual Boolean				initWithUserDCLProgram(
											LocalIsochPortAllocateParams*	inParams,
											IOFireWireUserClient*		inUserClient) ;
	
		virtual IOReturn 			getSupported(
											IOFWSpeed&					maxSpeed, 
											UInt64&						chanSupported) ;
		virtual IOReturn 			allocatePort(
											IOFWSpeed 					speed, 
											UInt32 						chan) ;
		virtual	IOReturn			releasePort() ;
		virtual IOReturn			stop() ;
	
		// --- utility functions ----------
		static Boolean				getDCLDataBuffer(
											const DCLCommand*			dcl,
											IOVirtualAddress*			outDataBuffer,
											IOByteCount*				outDataLength) ;
		static void					setDCLDataBuffer(
											DCLCommand*					dcl,
											IOVirtualAddress			inDataBuffer,
											IOByteCount					inDataLength) ;
		static IOByteCount			getDCLSize(
											DCLCommand*					dcl) ;
		static void					printDCLProgram(
											const DCLCommand*			dcl,
											UInt32						inDCLCount) ;
		virtual IOReturn			convertToKernelDCL(
											DCLUpdateDCLListStruct*		inDCLCommand,
											DCLCommand*					inUserDCLTable[],
											DCLCommand*					inUserToKernelDCLLookupTable[],
											UInt32						inLookupTableLength,
											UInt32&						inOutHint ) ;
		virtual IOReturn			convertToKernelDCL(
											DCLJumpStruct*				inDCLCommand,
											DCLCommand*					inUserDCLTable[],
											DCLCommand*					inUserToKernelDCLLookupTable[],
											UInt32						inLookupTableLength,
											UInt32&						inOutHint ) ;
		virtual IOReturn			convertToKernelDCL(
											DCLCallProcStruct*			inDCLCommand,
											DCLCommand*					inUserDCL ) ;
		static	Boolean				findOffsetInRanges(
											IOVirtualAddress			inAddress,
											IOVirtualRange				inRanges[],
											UInt32						inRangeCount,
											IOByteCount*				outOffset) ;
		static Boolean				userToKernLookup( 
											DCLCommand*					inDCLCommand,
											DCLCommand*					inUserDCLList[],
											DCLCommand*					inKernDCLList[],
											UInt32						inTableLength,
											UInt32&						inOutHint,
											DCLCommand**				outDCLCommand ) ;
		static	void				dclCallProcHandler(
											DCLCommand*					pDCLCommand) ;
		virtual IOReturn			setAsyncRef_DCLCallProc( OSAsyncReference asyncRef, DCLCallCommandProc* proc) ;
		virtual IOReturn			modifyJumpDCL(
											UInt32						inJumpDCLCompilerData,
											UInt32						inLabelDCLCompilerData) ;
		virtual IOReturn			modifyJumpDCLSize( UInt32 inDCLCompilerData, IOByteCount newSize ) ;
	
		virtual void				free() ;
		virtual IOReturn			createPort() ;
} ;

#endif //_IOKIT_IOFWUserIsochPortProxy_H