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/** @file
* PDM - Pluggable Device Manager, Async I/O Completion.
*/
/*
* Copyright (C) 2007-2022 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 <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_pdmasynccompletion_h
#define VBOX_INCLUDED_vmm_pdmasynccompletion_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <VBox/types.h>
#include <iprt/sg.h>
RT_C_DECLS_BEGIN
/** @defgroup grp_pdm_async_completion The PDM Async I/O Completion API
* @ingroup grp_pdm
* @{
*/
/** Pointer to a PDM async completion template handle. */
typedef struct PDMASYNCCOMPLETIONTEMPLATE *PPDMASYNCCOMPLETIONTEMPLATE;
/** Pointer to a PDM async completion template handle pointer. */
typedef PPDMASYNCCOMPLETIONTEMPLATE *PPPDMASYNCCOMPLETIONTEMPLATE;
/** Pointer to a PDM async completion task handle. */
typedef struct PDMASYNCCOMPLETIONTASK *PPDMASYNCCOMPLETIONTASK;
/** Pointer to a PDM async completion task handle pointer. */
typedef PPDMASYNCCOMPLETIONTASK *PPPDMASYNCCOMPLETIONTASK;
/** Pointer to a PDM async completion endpoint handle. */
typedef struct PDMASYNCCOMPLETIONENDPOINT *PPDMASYNCCOMPLETIONENDPOINT;
/** Pointer to a PDM async completion endpoint handle pointer. */
typedef PPDMASYNCCOMPLETIONENDPOINT *PPPDMASYNCCOMPLETIONENDPOINT;
/**
* Completion callback for devices.
*
* @param pDevIns The device instance.
* @param pvUser User argument.
* @param rc The status code of the completed request.
*/
typedef DECLCALLBACKTYPE(void, FNPDMASYNCCOMPLETEDEV,(PPDMDEVINS pDevIns, void *pvUser, int rc));
/** Pointer to a FNPDMASYNCCOMPLETEDEV(). */
typedef FNPDMASYNCCOMPLETEDEV *PFNPDMASYNCCOMPLETEDEV;
/**
* Completion callback for drivers.
*
* @param pDrvIns The driver instance.
* @param pvTemplateUser User argument given when creating the template.
* @param pvUser User argument given during request initiation.
* @param rc The status code of the completed request.
*/
typedef DECLCALLBACKTYPE(void, FNPDMASYNCCOMPLETEDRV,(PPDMDRVINS pDrvIns, void *pvTemplateUser, void *pvUser, int rc));
/** Pointer to a FNPDMASYNCCOMPLETEDRV(). */
typedef FNPDMASYNCCOMPLETEDRV *PFNPDMASYNCCOMPLETEDRV;
/**
* Completion callback for USB devices.
*
* @param pUsbIns The USB device instance.
* @param pvUser User argument.
* @param rc The status code of the completed request.
*/
typedef DECLCALLBACKTYPE(void, FNPDMASYNCCOMPLETEUSB,(PPDMUSBINS pUsbIns, void *pvUser, int rc));
/** Pointer to a FNPDMASYNCCOMPLETEUSB(). */
typedef FNPDMASYNCCOMPLETEUSB *PFNPDMASYNCCOMPLETEUSB;
/**
* Completion callback for internal.
*
* @param pVM The cross context VM structure.
* @param pvUser User argument for the task.
* @param pvUser2 User argument for the template.
* @param rc The status code of the completed request.
*/
typedef DECLCALLBACKTYPE(void, FNPDMASYNCCOMPLETEINT,(PVM pVM, void *pvUser, void *pvUser2, int rc));
/** Pointer to a FNPDMASYNCCOMPLETEINT(). */
typedef FNPDMASYNCCOMPLETEINT *PFNPDMASYNCCOMPLETEINT;
VMMR3DECL(int) PDMR3AsyncCompletionTemplateCreateInternal(PVM pVM, PPPDMASYNCCOMPLETIONTEMPLATE ppTemplate,
PFNPDMASYNCCOMPLETEINT pfnCompleted, void *pvUser2, const char *pszDesc);
VMMR3DECL(int) PDMR3AsyncCompletionTemplateDestroy(PPDMASYNCCOMPLETIONTEMPLATE pTemplate);
VMMR3DECL(int) PDMR3AsyncCompletionEpCreateForFile(PPPDMASYNCCOMPLETIONENDPOINT ppEndpoint,
const char *pszFilename, uint32_t fFlags,
PPDMASYNCCOMPLETIONTEMPLATE pTemplate);
/** @defgroup grp_pdmacep_file_flags Flags for PDMR3AsyncCompletionEpCreateForFile
* @{ */
/** Open the file in read-only mode. */
#define PDMACEP_FILE_FLAGS_READ_ONLY RT_BIT_32(0)
/** Whether the file should not be write protected.
* The default is to protect the file against writes by other processes
* when opened in read/write mode to prevent data corruption by
* concurrent access which can occur if the local writeback cache is enabled.
*/
#define PDMACEP_FILE_FLAGS_DONT_LOCK RT_BIT_32(2)
/** Open the endpoint with the host cache enabled. */
#define PDMACEP_FILE_FLAGS_HOST_CACHE_ENABLED RT_BIT_32(3)
/** @} */
VMMR3DECL(void) PDMR3AsyncCompletionEpClose(PPDMASYNCCOMPLETIONENDPOINT pEndpoint);
VMMR3DECL(int) PDMR3AsyncCompletionEpRead(PPDMASYNCCOMPLETIONENDPOINT pEndpoint, RTFOFF off,
PCRTSGSEG paSegments, unsigned cSegments,
size_t cbRead, void *pvUser,
PPPDMASYNCCOMPLETIONTASK ppTask);
VMMR3DECL(int) PDMR3AsyncCompletionEpWrite(PPDMASYNCCOMPLETIONENDPOINT pEndpoint, RTFOFF off,
PCRTSGSEG paSegments, unsigned cSegments,
size_t cbWrite, void *pvUser,
PPPDMASYNCCOMPLETIONTASK ppTask);
VMMR3DECL(int) PDMR3AsyncCompletionEpFlush(PPDMASYNCCOMPLETIONENDPOINT pEndpoint, void *pvUser, PPPDMASYNCCOMPLETIONTASK ppTask);
VMMR3DECL(int) PDMR3AsyncCompletionEpGetSize(PPDMASYNCCOMPLETIONENDPOINT pEndpoint, uint64_t *pcbSize);
VMMR3DECL(int) PDMR3AsyncCompletionEpSetSize(PPDMASYNCCOMPLETIONENDPOINT pEndpoint, uint64_t cbSize);
VMMR3DECL(int) PDMR3AsyncCompletionEpSetBwMgr(PPDMASYNCCOMPLETIONENDPOINT pEndpoint, const char *pszBwMgr);
VMMR3DECL(int) PDMR3AsyncCompletionTaskCancel(PPDMASYNCCOMPLETIONTASK pTask);
VMMR3DECL(int) PDMR3AsyncCompletionBwMgrSetMaxForFile(PUVM pUVM, const char *pszBwMgr, uint32_t cbMaxNew);
/** @} */
RT_C_DECLS_END
#endif /* !VBOX_INCLUDED_vmm_pdmasynccompletion_h */
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