Source to iokit/IOKit/adb/IOADBController.h

/*
 * Copyright (c) 1998-2000 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@
 */
/*
 * 18 June 1998 sdouglas   Start IOKit version.
 * 12 Nov  1998 suurballe  Port objc protocol to c++ abstract class.
 */
#ifndef _IOKIT_ADBCONTROLLER_H
#define _IOKIT_ADBCONTROLLER_H

#include <IOKit/IOService.h>
#include <IOKit/adb/adb.h>
#include <IOKit/adb/IOADBBus.h>

// referenced in subclasses:
void autopollHandler ( IOService *, UInt8, IOByteCount, UInt8 * );

class IOADBDevice;

/*
 * Results
 */

#define ADB_RET_OK          		0   /* Successful */
#define ADB_RET_INUSE           	1   /* ADB Device in use */
#define ADB_RET_NOTPRESENT      	2   /* ADB Device not present */
#define ADB_RET_TIMEOUT         	3   /* ADB Timeout  */
#define ADB_RET_UNEXPECTED_RESULT	4   /* Unknown result */
#define ADB_RET_REQUEST_ERROR       	5   /* Packet Request Error */
#define ADB_RET_BUS_ERROR       	6   /* ADB Bus Error */

class IOADBController: public IOADBBus
{
OSDeclareAbstractStructors(IOADBController)

public:

    bool start ( IOService * nub );
    IOReturn setOwner ( void * device, IOService * client, ADB_callback_func handler );
    virtual IOReturn claimDevice ( unsigned long, IOService *, ADB_callback_func );
    virtual IOReturn releaseDevice ( unsigned long );
    virtual IOReturn readDeviceForUser(unsigned long, unsigned long, UInt8 *, IOByteCount *);
    virtual IOReturn writeDeviceForUser(unsigned long, unsigned long, UInt8 *, IOByteCount *);
    virtual IOReturn setAutoPollPeriod (int microseconds) = 0;
    virtual IOReturn getAutoPollPeriod (int * microseconds) = 0;
    virtual IOReturn setAutoPollList(UInt16 activeAddressMask) = 0;
    virtual IOReturn getAutoPollList(UInt16 * activeAddressMask) = 0;
    virtual IOReturn setAutoPollEnable(bool enable) = 0;
    virtual IOReturn resetBus(void) = 0;
    virtual IOReturn flushDevice(IOADBAddress address) = 0;
    virtual IOReturn readFromDevice(IOADBAddress address, IOADBRegister adbRegister,
                                    UInt8 * data, IOByteCount * length) = 0;
    virtual IOReturn writeToDevice(IOADBAddress address, IOADBRegister adbRegister,
                                   UInt8 * data, IOByteCount * length) = 0;
    void packet ( UInt8 * data, IOByteCount length, UInt8 adbCommand );

    IOReturn flush ( ADBDeviceControl * busRef );
    IOReturn readRegister ( ADBDeviceControl * busRef, IOADBRegister adbRegister,
                            UInt8 * data, IOByteCount * length );
    IOReturn writeRegister ( ADBDeviceControl * busRef, IOADBRegister adbRegister,
                             UInt8 * data, IOByteCount * length );
    IOADBAddress address ( ADBDeviceControl * busRef );
    IOADBAddress defaultAddress ( ADBDeviceControl * busRef );
    UInt8 handlerID ( ADBDeviceControl * busRef );
    UInt8 defaultHandlerID ( ADBDeviceControl * busRef );
    IOReturn setHandlerID ( ADBDeviceControl * busRef, UInt8 handlerID );
    bool matchNubWithPropertyTable( IOService * device, OSDictionary *  propertyTable );
    IOReturn newUserClient(  task_t,  void *, UInt32, IOUserClient ** );

IOReturn clearOwner ( void * );

private:
    
    bool 		claimed_devices[16];		// true if a device has been claimed by user

    IOReturn probeBus ( void );
    bool probeAddress ( IOADBAddress addr );
    bool moveDeviceFrom ( IOADBAddress from, IOADBAddress to, bool check );
    unsigned int firstBit ( unsigned int mask );
    int getURLComponentUnit ( IOService * device, char * path, int maxLen );
};

#endif /* ! _IOKIT_ADBCONTROLLER_H */