/** @file * PDM - Pluggable Device Manager, VM Services. * * @todo This has not been implemented, consider dropping the concept. */ /* * Copyright (C) 2006-2022 Oracle and/or its affiliates. * * This file is part of VirtualBox base platform packages, as * available from https://www.virtualbox.org. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation, in version 3 of the * License. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see . * * The contents of this file may alternatively be used under the terms * of the Common Development and Distribution License Version 1.0 * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included * in the VirtualBox 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. * * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 */ #ifndef VBOX_INCLUDED_vmm_pdmsrv_h #define VBOX_INCLUDED_vmm_pdmsrv_h #ifndef RT_WITHOUT_PRAGMA_ONCE # pragma once #endif #include #include #include RT_C_DECLS_BEGIN /** @defgroup grp_pdm_services The PDM Services API * @ingroup grp_pdm * @{ */ /** * Construct a service instance for a VM. * * @returns VBox status. * @param pSrvIns The service instance data. * If the registration structure is needed, pSrvIns->pReg points to it. * @param pCfg Configuration node handle for the service. Use this to obtain the configuration * of the driver instance. It's also found in pSrvIns->pCfg, but since it's primary * usage is expected in this function it is passed as a parameter. */ typedef DECLCALLBACKTYPE(int, FNPDMSRVCONSTRUCT,(PPDMSRVINS pSrvIns, PCFGMNODE pCfg)); /** Pointer to a FNPDMSRVCONSTRUCT() function. */ typedef FNPDMSRVCONSTRUCT *PFNPDMSRVCONSTRUCT; /** * Destruct a driver instance. * * Most VM resources are freed by the VM. This callback is provided so that any non-VM * resources can be freed correctly. * * @param pSrvIns The service instance data. */ typedef DECLCALLBACKTYPE(void, FNPDMSRVDESTRUCT,(PPDMSRVINS pSrvIns)); /** Pointer to a FNPDMSRVDESTRUCT() function. */ typedef FNPDMSRVDESTRUCT *PFNPDMSRVDESTRUCT; /** * Power On notification. * * @param pSrvIns The service instance data. */ typedef DECLCALLBACKTYPE(void, FNPDMSRVPOWERON,(PPDMSRVINS pSrvIns)); /** Pointer to a FNPDMSRVPOWERON() function. */ typedef FNPDMSRVPOWERON *PFNPDMSRVPOWERON; /** * Reset notification. * * @returns VBox status. * @param pSrvIns The service instance data. */ typedef DECLCALLBACKTYPE(void, FNPDMSRVRESET,(PPDMSRVINS pSrvIns)); /** Pointer to a FNPDMSRVRESET() function. */ typedef FNPDMSRVRESET *PFNPDMSRVRESET; /** * Suspend notification. * * @returns VBox status. * @param pSrvIns The service instance data. */ typedef DECLCALLBACKTYPE(void, FNPDMSRVSUSPEND,(PPDMSRVINS pSrvIns)); /** Pointer to a FNPDMSRVSUSPEND() function. */ typedef FNPDMSRVSUSPEND *PFNPDMSRVSUSPEND; /** * Resume notification. * * @returns VBox status. * @param pSrvIns The service instance data. */ typedef DECLCALLBACKTYPE(void, FNPDMSRVRESUME,(PPDMSRVINS pSrvIns)); /** Pointer to a FNPDMSRVRESUME() function. */ typedef FNPDMSRVRESUME *PFNPDMSRVRESUME; /** * Power Off notification. * * @param pSrvIns The service instance data. */ typedef DECLCALLBACKTYPE(void, FNPDMSRVPOWEROFF,(PPDMSRVINS pSrvIns)); /** Pointer to a FNPDMSRVPOWEROFF() function. */ typedef FNPDMSRVPOWEROFF *PFNPDMSRVPOWEROFF; /** * Detach notification. * * This is called when a driver or device is detached from the service * * @param pSrvIns The service instance data. * @param pDevIns The device instance to detach. * @param pDrvIns The driver instance to detach. */ typedef DECLCALLBACKTYPE(void, FNPDMSRVDETACH,(PPDMSRVINS pSrvIns, PPDMDEVINS pDevIns, PPDMDRVINS pDrvIns)); /** Pointer to a FNPDMSRVDETACH() function. */ typedef FNPDMSRVDETACH *PFNPDMSRVDETACH; /** PDM Service Registration Structure, * This structure is used when registering a driver from * VBoxServicesRegister() (HC Ring-3). PDM will continue use till * the VM is terminated. */ typedef struct PDMSRVREG { /** Structure version. PDM_SRVREG_VERSION defines the current version. */ uint32_t u32Version; /** Driver name. */ char szServiceName[32]; /** The description of the driver. The UTF-8 string pointed to shall, like this structure, * remain unchanged from registration till VM destruction. */ const char *pszDescription; /** Flags, combination of the PDM_SRVREG_FLAGS_* \#defines. */ RTUINT fFlags; /** Size of the instance data. */ RTUINT cbInstance; /** Construct instance - required. */ PFNPDMSRVCONSTRUCT pfnConstruct; /** Destruct instance - optional. */ PFNPDMSRVDESTRUCT pfnDestruct; /** Power on notification - optional. */ PFNPDMSRVPOWERON pfnPowerOn; /** Reset notification - optional. */ PFNPDMSRVRESET pfnReset; /** Suspend notification - optional. */ PFNPDMSRVSUSPEND pfnSuspend; /** Resume notification - optional. */ PFNPDMSRVRESUME pfnResume; /** Detach notification - optional. */ PFNPDMSRVDETACH pfnDetach; /** Power off notification - optional. */ PFNPDMSRVPOWEROFF pfnPowerOff; } PDMSRVREG; /** Pointer to a PDM Driver Structure. */ typedef PDMSRVREG *PPDMSRVREG; /** Const pointer to a PDM Driver Structure. */ typedef PDMSRVREG const *PCPDMSRVREG; /** * PDM Service API. */ typedef struct PDMSRVHLP { /** Structure version. PDM_SRVHLP_VERSION defines the current version. */ uint32_t u32Version; /** * Assert that the current thread is the emulation thread. * * @returns True if correct. * @returns False if wrong. * @param pSrvIns Service instance. * @param pszFile Filename of the assertion location. * @param iLine Linenumber of the assertion location. * @param pszFunction Function of the assertion location. */ DECLR3CALLBACKMEMBER(bool, pfnAssertEMT,(PPDMSRVINS pSrvIns, const char *pszFile, unsigned iLine, const char *pszFunction)); /** * Assert that the current thread is NOT the emulation thread. * * @returns True if correct. * @returns False if wrong. * @param pSrvIns Service instance. * @param pszFile Filename of the assertion location. * @param iLine Linenumber of the assertion location. * @param pszFunction Function of the assertion location. */ DECLR3CALLBACKMEMBER(bool, pfnAssertOther,(PPDMSRVINS pSrvIns, const char *pszFile, unsigned iLine, const char *pszFunction)); /** * Creates a timer. * * @returns VBox status. * @param pVM The cross context VM structure. * @param pSrvIns Service instance. * @param enmClock The clock to use on this timer. * @param pfnCallback Callback function. * @param pszDesc Pointer to description string which must stay around * until the timer is fully destroyed (i.e. a bit after TMTimerDestroy()). * @param ppTimer Where to store the timer on success. */ DECLR3CALLBACKMEMBER(int, pfnTMTimerCreate,(PPDMSRVINS pSrvIns, TMCLOCK enmClock, PFNTMTIMERDEV pfnCallback, const char *pszDesc, PPTMTIMERR3 ppTimer)); /** * Query the virtual timer frequency. * * @returns Frequency in Hz. * @param pSrvIns Service instance. * @thread Any thread. */ DECLR3CALLBACKMEMBER(uint64_t, pfnTMGetVirtualFreq,(PPDMSRVINS pSrvIns)); /** * Query the virtual time. * * @returns The current virtual time. * @param pSrvIns Service instance. * @thread Any thread. */ DECLR3CALLBACKMEMBER(uint64_t, pfnTMGetVirtualTime,(PPDMSRVINS pSrvIns)); } PDMSRVHLP; /** Pointer PDM Service API. */ typedef PDMSRVHLP *PPDMSRVHLP; /** Pointer const PDM Service API. */ typedef const PDMSRVHLP *PCPDMSRVHLP; /** Current SRVHLP version number. */ #define PDM_SRVHLP_VERSION PDM_VERSION_MAKE(0xdfff, 1, 0) /** * PDM Service Instance. */ typedef struct PDMSRVINS { /** Structure version. PDM_SRVINS_VERSION defines the current version. */ uint32_t u32Version; /** Internal data. */ union { #ifdef PDMSRVINSINT_DECLARED PDMSRVINSINT s; #endif uint8_t padding[HC_ARCH_BITS == 32 ? 32 : 32]; } Internal; /** Pointer the PDM Service API. */ R3PTRTYPE(PCPDMSRVHLP) pHlp; /** Pointer to driver registration structure. */ R3PTRTYPE(PCPDMSRVREG) pReg; /** Configuration handle. */ R3PTRTYPE(PCFGMNODE) pCfg; /** The base interface of the service. * The service constructor initializes this. */ PDMIBASE IBase; /* padding to make achInstanceData aligned at 16 byte boundary. */ uint32_t au32Padding[2]; /** Pointer to driver instance data. */ R3PTRTYPE(void *) pvInstanceData; /** Driver instance data. The size of this area is defined * in the PDMSRVREG::cbInstanceData field. */ char achInstanceData[4]; } PDMSRVINS; /** Current PDMSRVREG version number. */ #define PDM_SRVINS_VERSION PDM_VERSION_MAKE(0xdffe, 1, 0) /** Converts a pointer to the PDMSRVINS::IBase to a pointer to PDMSRVINS. */ #define PDMIBASE_2_PDMSRV(pInterface) ( (PPDMSRVINS)((char *)(pInterface) - RT_UOFFSETOF(PDMSRVINS, IBase)) ) /** Pointer to callbacks provided to the VBoxServiceRegister() call. */ typedef struct PDMSRVREGCB *PPDMSRVREGCB; /** * Callbacks for VBoxServiceRegister(). */ typedef struct PDMSRVREGCB { /** Interface version. * This is set to PDM_SRVREG_CB_VERSION. */ uint32_t u32Version; /** * Registers a service with the current VM instance. * * @returns VBox status code. * @param pCallbacks Pointer to the callback table. * @param pSrvReg Pointer to the device registration record. * This data must be permanent and readonly. */ DECLR3CALLBACKMEMBER(int, pfnRegister,(PPDMSRVREGCB pCallbacks, PCPDMSRVREG pSrvReg)); } PDMSRVREGCB; /** Current version of the PDMSRVREGCB structure. */ #define PDM_SRVREG_CB_VERSION PDM_VERSION_MAKE(0xdffd, 1, 0) /** * The VBoxServicesRegister callback function. * * PDM will invoke this function after loading a device module and letting * the module decide which devices to register and how to handle conflicts. * * @returns VBox status code. * @param pCallbacks Pointer to the callback table. * @param u32Version VBox version number. */ typedef DECLCALLBACKTYPE(int, FNPDMVBOXSERVICESREGISTER,(PPDMSRVREGCB pCallbacks, uint32_t u32Version)); /** @} */ RT_C_DECLS_END #endif /* !VBOX_INCLUDED_vmm_pdmsrv_h */