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/* $Id$ */
/** @file
* VirtualBox Support Driver - Inter-Driver Communication (IDC) definitions.
*/
/*
* Copyright (C) 2008-2010 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
#ifndef ___SUPDrvIDC_h___
#define ___SUPDrvIDC_h___
#include <VBox/types.h>
/** @def SUP_IDC_CODE
* Creates IDC function code.
*
* @param Function The function number to encode, 1..255.
*
* @remarks We can take a slightly more relaxed attitude wrt to size encoding
* here since only windows will use standard I/O control function code.
*/
#ifdef RT_OS_WINDOWS
# define SUP_IDC_CODE(Function) CTL_CODE(FILE_DEVICE_UNKNOWN, (Function) + 2542, METHOD_BUFFERED, FILE_WRITE_ACCESS)
#else
# define SUP_IDC_CODE(Function) ( UINT32_C(0xc0ffee00) | (uint32_t)(0x000000ff & (Function)) )
#endif
/*******************************************************************************
* Structures and Typedefs *
*******************************************************************************/
#ifdef RT_ARCH_AMD64
# pragma pack(8) /* paranoia. */
#else
# pragma pack(4) /* paranoia. */
#endif
/**
* An IDC request packet header.
*
* The main purpose of this header is to pass the session handle
* and status code in a generic manner in order to make things
* easier on the receiving end.
*/
typedef struct SUPDRVIDCREQHDR
{
/** IN: The size of the request. */
uint32_t cb;
/** OUT: Status code of the request. */
int32_t rc;
/** IN: Pointer to the session handle. */
PSUPDRVSESSION pSession;
#if ARCH_BITS == 32
/** Padding the structure to 16-bytes. */
uint32_t u32Padding;
#endif
} SUPDRVIDCREQHDR;
/** Pointer to an IDC request packet header. */
typedef SUPDRVIDCREQHDR *PSUPDRVIDCREQHDR;
/** Pointer to a const IDC request packet header. */
typedef SUPDRVIDCREQHDR const *PCSUPDRVIDCREQHDR;
/**
* SUPDRV IDC: Connect request.
* This request takes a SUPDRVIDCREQCONNECT packet.
*/
#define SUPDRV_IDC_REQ_CONNECT SUP_IDC_CODE(1)
/** A SUPDRV IDC connect request packet. */
typedef struct SUPDRVIDCREQCONNECT
{
/** The request header. */
SUPDRVIDCREQHDR Hdr;
/** The payload union. */
union
{
/** The input. */
struct SUPDRVIDCREQCONNECTIN
{
/** The magic cookie (SUPDRVIDCREQ_CONNECT_MAGIC_COOKIE). */
uint32_t u32MagicCookie;
/** The desired version of the IDC interface. */
uint32_t uReqVersion;
/** The minimum version of the IDC interface. */
uint32_t uMinVersion;
} In;
/** The output. */
struct SUPDRVIDCREQCONNECTOUT
{
/** The support driver session. (An opaque.) */
PSUPDRVSESSION pSession;
/** The version of the IDC interface for this session. */
uint32_t uSessionVersion;
/** The version of the IDC interface . */
uint32_t uDriverVersion;
/** The SVN revision of the driver.
* This will be set to 0 if not compiled into the driver. */
uint32_t uDriverRevision;
} Out;
} u;
} SUPDRVIDCREQCONNECT;
/** Pointer to a SUPDRV IDC connect request. */
typedef SUPDRVIDCREQCONNECT *PSUPDRVIDCREQCONNECT;
/** Magic cookie value (SUPDRVIDCREQCONNECT::In.u32MagicCookie). ('tori') */
#define SUPDRVIDCREQ_CONNECT_MAGIC_COOKIE UINT32_C(0x69726f74)
/**
* SUPDRV IDC: Disconnect request.
* This request only requires a SUPDRVIDCREQHDR.
*/
#define SUPDRV_IDC_REQ_DISCONNECT SUP_IDC_CODE(2)
/**
* SUPDRV IDC: Query a symbol address.
* This request takes a SUPDRVIDCREQGETSYM packet.
*/
#define SUPDRV_IDC_REQ_GET_SYMBOL SUP_IDC_CODE(3)
/** A SUPDRV IDC get symbol request packet. */
typedef struct SUPDRVIDCREQGETSYM
{
/** The request header. */
SUPDRVIDCREQHDR Hdr;
/** The payload union. */
union
{
/** The input. */
struct SUPDRVIDCREQGETSYMIN
{
/** The module name.
* NULL is an alias for the support driver. */
const char *pszModule;
/** The symbol name. */
const char *pszSymbol;
} In;
/** The output. */
struct SUPDRVIDCREQGETSYMOUT
{
/** The symbol address. */
PFNRT pfnSymbol;
} Out;
} u;
} SUPDRVIDCREQGETSYM;
/** Pointer to a SUPDRV IDC get symbol request. */
typedef SUPDRVIDCREQGETSYM *PSUPDRVIDCREQGETSYM;
/**
* SUPDRV IDC: Request the registration of a component factory.
* This request takes a SUPDRVIDCREQCOMPREGFACTORY packet.
*/
#define SUPDRV_IDC_REQ_COMPONENT_REGISTER_FACTORY SUP_IDC_CODE(10)
/** A SUPDRV IDC register component factory request packet. */
typedef struct SUPDRVIDCREQCOMPREGFACTORY
{
/** The request header. */
SUPDRVIDCREQHDR Hdr;
/** The payload union. */
union
{
/** The input. */
struct SUPDRVIDCREQCOMPREGFACTORYIN
{
/** Pointer to the factory. */
PCSUPDRVFACTORY pFactory;
} In;
} u;
} SUPDRVIDCREQCOMPREGFACTORY;
/** Pointer to a SUPDRV IDC register component factory request. */
typedef SUPDRVIDCREQCOMPREGFACTORY *PSUPDRVIDCREQCOMPREGFACTORY;
/**
* SUPDRV IDC: Deregister a component factory.
* This request takes a SUPDRVIDCREQCOMPDEREGFACTORY packet.
*/
#define SUPDRV_IDC_REQ_COMPONENT_DEREGISTER_FACTORY SUP_IDC_CODE(11)
/** A SUPDRV IDC deregister component factory request packet. */
typedef struct SUPDRVIDCREQCOMPDEREGFACTORY
{
/** The request header. */
SUPDRVIDCREQHDR Hdr;
/** The payload union. */
union
{
/** The input. */
struct SUPDRVIDCREQCOMPDEREGFACTORYIN
{
/** Pointer to the factory. */
PCSUPDRVFACTORY pFactory;
} In;
} u;
} SUPDRVIDCREQCOMPDEREGFACTORY;
/** Pointer to a SUPDRV IDC deregister component factory request. */
typedef SUPDRVIDCREQCOMPDEREGFACTORY *PSUPDRVIDCREQCOMPDEREGFACTORY;
/*
* The OS specific prototypes.
* Most OSes uses
*/
RT_C_DECLS_BEGIN
#if defined(RT_OS_DARWIN)
extern int VBOXCALL SUPDrvDarwinIDC(uint32_t iReq, PSUPDRVIDCREQHDR pReq);
#elif defined(RT_OS_FREEBSD)
extern int VBOXCALL SUPDrvFreeBSDIDC(uint32_t iReq, PSUPDRVIDCREQHDR pReq);
#elif defined(RT_OS_LINUX)
extern int VBOXCALL SUPDrvLinuxIDC(uint32_t iReq, PSUPDRVIDCREQHDR pReq);
#elif defined(RT_OS_OS2)
/** @todo Port to OS/2. */
#elif defined(RT_OS_SOLARIS)
extern int VBOXCALL SUPDrvSolarisIDC(uint32_t iReq, PSUPDRVIDCREQHDR pReq);
#elif defined(RT_OS_WINDOWS)
/* Nothing special for windows. */
#else
/* PORTME: OS specific IDC stuff goes here. */
#endif
RT_C_DECLS_END
/**
* The SUPDRV IDC entry point.
*
* @returns VBox status code indicating the validity of the session, request and
* the return data packet. The status of the request it self is found
* in the packet (specific to each request).
*
* @param pSession The session. (This is NULL for SUPDRV_IDC_REQ_CONNECT.)
* @param uReq The request number.
* @param pvReq Pointer to the request packet. Optional for some requests.
* @param cbReq The size of the request packet.
*/
/** @todo move this and change to function proto */
typedef DECLCALLBACK(int) FNSUPDRVIDCENTRY(PSUPDRVSESSION pSession, uint32_t uReq, void *pvReq, uint32_t cbReq);
/** @} */
#pragma pack() /* paranoia */
#endif
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