SEAforth24UserClient.h

// (C) 2009 Wager Labs, SA
// Author: Joel Reymont
// Web: http://tinyco.de

#include <IOKit/IOUserClient.h>
#include "SEAforth24.h"

#define UserClientClassName com_wagerlabs_driver_SEAforth24UserClient

class UserClientClassName : public IOUserClient
{
    OSDeclareDefaultStructors(com_wagerlabs_driver_SEAforth24UserClient)
    
protected:

    DriverClassName* fProvider;
    task_t fTask;
    
    static const IOExternalMethodDispatch Methods[kNumberOfMethods];
    
public:

    virtual void stop(IOService* provider);
    virtual bool start(IOService* provider);
    
    virtual bool initWithTask(task_t owningTask, void* securityToken, UInt32 type);
    
    virtual IOReturn clientClose(void);
    virtual IOReturn clientDied(void);
    
    virtual bool willTerminate(IOService* provider, IOOptionBits options);
    virtual bool didTerminate(IOService* provider, IOOptionBits options, bool* defer);
    
    virtual bool terminate(IOOptionBits options = 0);
    virtual bool finalize(IOOptionBits options);
    
protected:	
    
    virtual IOReturn closeUserClient(void);
    virtual IOReturn openUserClient(void);
    
    // KPI for supporting access from both 32-bit and 64-bit user processes beginning with Mac OS X 10.5.
    virtual IOReturn externalMethod(
        uint32_t selector, 
        IOExternalMethodArguments* arguments,
        IOExternalMethodDispatch* dispatch, 
        OSObject* target, 
        void* reference
    );
    
    static IOReturn sOpenUserClient(
        UserClientClassName* target, 
        void* reference, 
        IOExternalMethodArguments* arguments
    );    
    
    static IOReturn sCloseUserClient(
        UserClientClassName* target, 
        void* reference, 
        IOExternalMethodArguments* arguments
    );
    
    static IOReturn sInit(
        UserClientClassName* target, 
        void* reference, 
        IOExternalMethodArguments* arguments
    );

    static IOReturn sRead(
        UserClientClassName* target, 
        void* reference, 
        IOExternalMethodArguments* arguments
    );
    
    static IOReturn sWrite(
        UserClientClassName* target,
        void* reference, 
        IOExternalMethodArguments* arguments
    );    

    virtual IOReturn S24IO(
        vm_address_t buffer, 
        UInt32 size, 
        UInt16 bits, 
        UInt8 write_last,
        IODirection direction
    );
  };