IOFWPhysicalAddressSpace.h   [plain text]

/*
 * Copyright (c) 1998-2002 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This 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 OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
 
#ifndef _IOKIT_IOFWPHYSICALADDRESSSPACE_H
#define _IOKIT_IOFWPHYSICALADDRESSSPACE_H

#include <IOKit/firewire/IOFWAddressSpace.h>

/*
 * Direct physical memory <-> FireWire address.
 * Accesses to these addresses may be handled automatically by the
 * hardware without notification.
 *
 * The 64 bit FireWire address of (32 bit) physical addr xxxx:xxxx is hostNode:0000:xxxx:xxxx
 */

class IOFWPhysicalAddressSpace;

#pragma mark -

/*! 
	@class IOFWPhysicalAddressSpaceAux
*/

class IOFWPhysicalAddressSpaceAux : public IOFWAddressSpaceAux
{
    OSDeclareDefaultStructors(IOFWPhysicalAddressSpaceAux)

	friend class IOFWAddressSpace;
	friend class IOFWPhysicalAddressSpace;
	
protected:
	
	/*! 
		@struct ExpansionData
		@discussion This structure will be used to expand the capablilties of the class in the future.
    */  
	  
    struct ExpansionData { };

	/*! 
		@var reserved
		Reserved for future use.  (Internal use only)  
	*/
    
	ExpansionData *reserved;
	
private:
    OSMetaClassDeclareReservedUnused(IOFWPhysicalAddressSpaceAux, 0);
    OSMetaClassDeclareReservedUnused(IOFWPhysicalAddressSpaceAux, 1);
    OSMetaClassDeclareReservedUnused(IOFWPhysicalAddressSpaceAux, 2);
    OSMetaClassDeclareReservedUnused(IOFWPhysicalAddressSpaceAux, 3);
    OSMetaClassDeclareReservedUnused(IOFWPhysicalAddressSpaceAux, 4);
    OSMetaClassDeclareReservedUnused(IOFWPhysicalAddressSpaceAux, 5);
    OSMetaClassDeclareReservedUnused(IOFWPhysicalAddressSpaceAux, 6);
    OSMetaClassDeclareReservedUnused(IOFWPhysicalAddressSpaceAux, 7);
    OSMetaClassDeclareReservedUnused(IOFWPhysicalAddressSpaceAux, 8);
    OSMetaClassDeclareReservedUnused(IOFWPhysicalAddressSpaceAux, 9);
	
};

#pragma mark -

class IOFWPhysicalAddressSpace : public IOFWAddressSpace
{
    OSDeclareDefaultStructors(IOFWPhysicalAddressSpace)

	friend class IOFWPhysicalAddressSpaceAux;

protected:
    
	IOMemoryDescriptor *	fMem;
    vm_size_t				fLen;
	
    virtual	void 					free();

public:
    virtual bool initWithDesc(IOFireWireBus *bus,
                                        IOMemoryDescriptor *mem);

    virtual UInt32 doRead(UInt16 nodeID, IOFWSpeed &speed, FWAddress addr, UInt32 len, 
					IOMemoryDescriptor **buf, IOByteCount * offset,
                          IOFWRequestRefCon refcon);
    virtual UInt32 doWrite(UInt16 nodeID, IOFWSpeed &speed, FWAddress addr, UInt32 len,
                           const void *buf, IOFWRequestRefCon refcon);

protected:
	
	virtual IOFWAddressSpaceAux * createAuxiliary( void );
    	
};

#endif