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/** @file
* PDM - Pluggable Device Manager, Tasks.
*/
/*
* Copyright (C) 2019-2025 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 <https://www.gnu.org/licenses>.
*
* 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_pdmtask_h
#define VBOX_INCLUDED_vmm_pdmtask_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <VBox/types.h>
RT_C_DECLS_BEGIN
/** @defgroup grp_pdm_task The PDM Tasks API
* @ingroup grp_pdm
*
* A task is a predefined asynchronous procedure call that can be triggered from
* any context.
*
* @{
*/
/** PDM task handle. */
typedef uint64_t PDMTASKHANDLE;
/** NIL PDM task handle. */
#define NIL_PDMTASKHANDLE UINT64_MAX
/**
* Task worker callback for devices.
*
* @param pDevIns The device instance.
* @param pvUser The user parameter.
* @thread Task worker thread.
* @remarks The device critical section will NOT be entered before calling the
* callback. No other locks will be held either.
*/
typedef DECLCALLBACKTYPE(void, FNPDMTASKDEV,(PPDMDEVINS pDevIns, void *pvUser));
/** Pointer to a FNPDMTASKDEV(). */
typedef FNPDMTASKDEV *PFNPDMTASKDEV;
/**
* Task worker callback for drivers.
*
* @param pDrvIns The driver instance.
* @param pvUser The user parameter.
* @thread Task worker thread.
* @remarks No other locks will be held.
*/
typedef DECLCALLBACKTYPE(void, FNPDMTASKDRV,(PPDMDRVINS pDrvIns, void *pvUser));
/** Pointer to a FNPDMTASKDRV(). */
typedef FNPDMTASKDRV *PFNPDMTASKDRV;
/**
* Task worker callback for USB devices.
*
* @param pUsbIns The USB device instance.
* @param pvUser The user parameter.
* @thread Task worker thread.
* @remarks No other locks will be held.
*/
typedef DECLCALLBACKTYPE(void, FNPDMTASKUSB,(PPDMUSBINS pUsbIns, void *pvUser));
/** Pointer to a FNPDMTASKUSB(). */
typedef FNPDMTASKUSB *PFNPDMTASKUSB;
/**
* Task worker callback for internal components.
*
* @param pVM The cross context VM structure.
* @param pvUser The user parameter.
* @thread Task worker thread.
* @remarks No other locks will be held.
*/
typedef DECLCALLBACKTYPE(void, FNPDMTASKINT,(PVM pVM, void *pvUser));
/** Pointer to a FNPDMTASKINT(). */
typedef FNPDMTASKINT *PFNPDMTASKINT;
/** @name PDMTASK_F_XXX - Task creation flags.
* @{ */
/** Create a ring-0 triggerable task. */
#define PDMTASK_F_R0 RT_BIT_32(0)
/** Create a raw-mode triggerable task. */
#define PDMTASK_F_RC RT_BIT_32(1)
/** Create a ring-0 and raw-mode triggerable task. */
#define PDMTASK_F_RZ (PDMTASK_F_R0 | PDMTASK_F_RC)
/** Valid flags. */
#define PDMTASK_F_VALID_MASK UINT32_C(0x00000003)
/** @} */
#ifdef VBOX_IN_VMM
/**
* Task owner type.
*/
typedef enum PDMTASKTYPE
{
/** Invalid zero value. */
PDMTASKTYPE_INVALID = 0,
/** Device consumer. */
PDMTASKTYPE_DEV,
/** Driver consumer. */
PDMTASKTYPE_DRV,
/** USB device consumer. */
PDMTASKTYPE_USB,
/** Internal consumer. */
PDMTASKTYPE_INTERNAL,
/** End of valid values. */
PDMTASKTYPE_END,
/** Typical 32-bit type blowup. */
PDMTASKTYPE_32BIT_HACK = 0x7fffffff
} PDMTASKTYPE;
VMMR3_INT_DECL(int) PDMR3TaskCreate(PVM pVM, uint32_t fFlags, const char *pszName, PDMTASKTYPE enmType, void *pvOwner,
PFNRT pfnCallback, void *pvUser, PDMTASKHANDLE *phTask);
VMMR3_INT_DECL(int) PDMR3TaskCreateInternal(PVM pVM, uint32_t fFlags, const char *pszName,
PFNPDMTASKINT pfnCallback, void *pvUser, PDMTASKHANDLE *phTask);
VMMR3_INT_DECL(int) PDMR3TaskDestroyAllByOwner(PVM pVM, PDMTASKTYPE enmType, void *pvOwner);
VMMR3_INT_DECL(int) PDMR3TaskDestroySpecific(PVM pVM, PDMTASKTYPE enmType, void *pvOwner, PDMTASKHANDLE hTask);
VMMR3_INT_DECL(int) PDMR3TaskDestroyInternal(PVM pVM, PDMTASKHANDLE hTask);
VMM_INT_DECL(int) PDMTaskTrigger(PVMCC pVM, PDMTASKTYPE enmType, RTR3PTR pvOwner, PDMTASKHANDLE hTask);
VMM_INT_DECL(int) PDMTaskTriggerInternal(PVMCC pVM, PDMTASKHANDLE hTask);
#endif /* VBOX_IN_VMM */
/** @} */
RT_C_DECLS_END
#endif /* !VBOX_INCLUDED_vmm_pdmtask_h */
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