IONDRV.h   [plain text]

/*
 * 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@
 */


#ifndef __IONDRV__
#define __IONDRV__

#include <IOKit/IORegistryEntry.h>
#include <IOKit/IOInterruptEventSource.h>

#include <IOKit/ndrvsupport/IOMacOSTypes.h>
#include <IOKit/ndrvsupport/IONDRVSupport.h>

#pragma options align=mac68k

#ifdef __cplusplus
extern "C" {
#endif

enum {
    kIONDRVOpenCommand                = 128 + 0,
    kIONDRVCloseCommand               = 128 + 1,
    kIONDRVReadCommand                = 128 + 2,
    kIONDRVWriteCommand               = 128 + 3,
    kIONDRVControlCommand             = 128 + 4,
    kIONDRVStatusCommand              = 128 + 5,
    kIONDRVKillIOCommand              = 128 + 6,
    kIONDRVInitializeCommand          = 128 + 7,		/* init driver and device*/
    kIONDRVFinalizeCommand            = 128 + 8,		/* shutdown driver and device*/
    kIONDRVReplaceCommand             = 128 + 9,		/* replace an old driver*/
    kIONDRVSupersededCommand          = 128 + 10		/* prepare to be replaced by a new driver*/
};
enum {
    kIONDRVSynchronousIOCommandKind   = 0x00000001,
    kIONDRVAsynchronousIOCommandKind  = 0x00000002,
    kIONDRVImmediateIOCommandKind     = 0x00000004
};

struct IONDRVControlParameters {
    UInt8	__reservedA[0x1a];
    UInt16	code;
    void *	params;
    UInt8	__reservedB[0x12];
};

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

//typedef void * RegEntryID[4];
struct RegEntryID { void * opaque[4]; };

struct DriverInitInfo {
    UInt16                          refNum;
    RegEntryID                      deviceEntry;
};

#ifndef kAAPLRegEntryIDKey
#define kAAPLRegEntryIDKey	"AAPL,RegEntryID"
#endif

#define MAKE_REG_ENTRY(regEntryID,obj) 				\
	(regEntryID)->opaque[ 0 ] = (void *) obj;			\
	(regEntryID)->opaque[ 1 ] = (void *) ~(UInt32)obj;		\
	(regEntryID)->opaque[ 2 ] = (void *) 0x53696d65;		\
	(regEntryID)->opaque[ 3 ] = (void *) 0x52756c7a;

#define REG_ENTRY_TO_OBJ(regEntryID,obj) 				\
	if( (UInt32)((obj = ((IORegistryEntry **)regEntryID)[ 0 ])) 	\
	 != ~((UInt32 *)regEntryID)[ 1 ] )				\
	    return( -2538);

#define REG_ENTRY_TO_OBJ_RET(regEntryID,obj,ret) 			\
	if( (UInt32)((obj = ((IORegistryEntry **)regEntryID)[ 0 ])) 	\
	 != ~((UInt32 *)regEntryID)[ 1 ] )				\
	    return( ret);

#define REG_ENTRY_TO_PT(regEntryID,obj) 				\
	IORegistryEntry * obj;						\
	if( (UInt32)((obj = ((IORegistryEntry **)regEntryID)[ 0 ])) 	\
	 != ~((UInt32 *)regEntryID)[ 1 ] )				\
	    return( -2538);

#define REG_ENTRY_TO_SERVICE(regEntryID,type,obj) 			\
	IORegistryEntry * regEntry;					\
	type		* obj;						\
	if( (UInt32)((regEntry = ((IORegistryEntry **)regEntryID)[ 0 ])) \
	 != ~((UInt32 *)regEntryID)[ 1 ] )				\
	    return( -2538);						\
	if( 0 == (obj = OSDynamicCast( type, regEntry))) 		\
	    return( -2542);

struct CntrlParam {
    void *                          qLink;
    short                           qType;
    short                           ioTrap;
    void *                          ioCmdAddr;
    void *                          ioCompletion;
    short                           ioResult;
    char *                          ioNamePtr;
    short                           ioVRefNum;
    short                           ioCRefNum;
    short                           csCode;
    void *                          csParams;
    short                           csParam[9];
};
typedef struct CntrlParam CntrlParam, *CntrlParamPtr;

#pragma options align=reset

enum {
    kOpenCommand                = 0,
    kCloseCommand               = 1,
    kReadCommand                = 2,
    kWriteCommand               = 3,
    kControlCommand             = 4,
    kStatusCommand              = 5,
    kKillIOCommand              = 6,
    kInitializeCommand          = 7,                            /* init driver and device*/
    kFinalizeCommand            = 8,                            /* shutdown driver and device*/
    kReplaceCommand             = 9,                            /* replace an old driver*/
    kSupersededCommand          = 10                            /* prepare to be replaced by a new driver*/
};
enum {
    kSynchronousIOCommandKind   = 0x00000001,
    kAsynchronousIOCommandKind  = 0x00000002,
    kImmediateIOCommandKind     = 0x00000004
};


extern OSStatus    CallTVector( 
	    void * p1, void * p2, void * p3, void * p4, void * p5, void * p6,
	    struct IOTVector * entry );

#ifdef __cplusplus
}
#endif

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

class IONDRV : public OSObject
{
    OSDeclareAbstractStructors(IONDRV)

public:
    virtual IOReturn getSymbol( const char * symbolName,
				IOLogicalAddress * address ) = 0;

    virtual const char * driverName( void ) = 0;

    virtual IOReturn doDriverIO( UInt32 commandID, void * contents,
				 UInt32 commandCode, UInt32 commandKind ) = 0;
};

class IOPEFNDRV : public IONDRV
{
    OSDeclareDefaultStructors(IOPEFNDRV)

private:
    void * 			fPEFInst;
    struct IOTVector *		fDoDriverIO;
    struct DriverDescription *	fDriverDesc;
    char			fName[64];
    kmod_info_t *		fKModInfo;
    kmod_t			fKModID;

public:
    static void initialize( void );
    static IONDRV * instantiate( IORegistryEntry * regEntry,
                                 IOLogicalAddress container,
                                 IOByteCount containerSize,
				 bool checkDate,
                                 IONDRVUndefinedSymbolHandler handler,
                                 void * self );

    static IONDRV * fromRegistryEntry( IORegistryEntry * regEntry, OSData * newPEF,
                                        IONDRVUndefinedSymbolHandler handler, void * self);

    virtual void free( void );

    virtual IOReturn getSymbol( const char * symbolName,
				IOLogicalAddress * address );

    virtual const char * driverName( void );

    virtual IOReturn doDriverIO( UInt32 commandID, void * contents,
				 UInt32 commandCode, UInt32 commandKind );
};

struct IONDRVInterruptSource {
    void *	refCon;
    IOTVector	handlerStore;
    IOTVector	enablerStore;
    IOTVector	disablerStore;
    IOTVector *	handler;
    IOTVector *	enabler;
    IOTVector *	disabler;
    bool	registered;
    bool	enabled;
};

class IONDRVInterruptSet : public OSObject {

    OSDeclareDefaultStructors(IONDRVInterruptSet)

public:
    IOService *			provider;
    IOOptionBits		options;
    UInt32			count;
    IONDRVInterruptSource *	sources;
    IONDRVInterruptSet *	child;

    static IONDRVInterruptSet * with(IOService * provider,
                                    IOOptionBits options, SInt32 count);
    void free();
};

#endif /* __IONDRV__ */