| 1 | /** @file
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| 2 | * PDM - Pluggable Device Manager, Async I/O Completion.
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| 3 | */
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| 4 |
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| 5 | /*
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| 6 | * Copyright (C) 2007-2019 Oracle Corporation
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| 7 | *
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| 8 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 9 | * available from http://www.virtualbox.org. This file is free software;
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| 10 | * you can redistribute it and/or modify it under the terms of the GNU
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| 11 | * General Public License (GPL) as published by the Free Software
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| 12 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 13 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 14 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 15 | *
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| 16 | * The contents of this file may alternatively be used under the terms
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| 17 | * of the Common Development and Distribution License Version 1.0
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| 18 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 19 | * VirtualBox OSE distribution, in which case the provisions of the
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| 20 | * CDDL are applicable instead of those of the GPL.
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| 21 | *
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| 22 | * You may elect to license modified versions of this file under the
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| 23 | * terms and conditions of either the GPL or the CDDL or both.
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| 24 | */
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| 25 |
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| 26 | #ifndef VBOX_INCLUDED_vmm_pdmasynccompletion_h
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| 27 | #define VBOX_INCLUDED_vmm_pdmasynccompletion_h
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| 28 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 29 | # pragma once
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| 30 | #endif
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| 31 |
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| 32 | #include <VBox/types.h>
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| 33 | #include <iprt/sg.h>
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| 34 |
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| 35 |
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| 36 | RT_C_DECLS_BEGIN
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| 37 |
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| 38 | /** @defgroup grp_pdm_async_completion The PDM Async I/O Completion API
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| 39 | * @ingroup grp_pdm
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| 40 | * @{
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| 41 | */
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| 42 |
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| 43 | /** Pointer to a PDM async completion template handle. */
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| 44 | typedef struct PDMASYNCCOMPLETIONTEMPLATE *PPDMASYNCCOMPLETIONTEMPLATE;
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| 45 | /** Pointer to a PDM async completion template handle pointer. */
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| 46 | typedef PPDMASYNCCOMPLETIONTEMPLATE *PPPDMASYNCCOMPLETIONTEMPLATE;
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| 47 |
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| 48 | /** Pointer to a PDM async completion task handle. */
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| 49 | typedef struct PDMASYNCCOMPLETIONTASK *PPDMASYNCCOMPLETIONTASK;
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| 50 | /** Pointer to a PDM async completion task handle pointer. */
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| 51 | typedef PPDMASYNCCOMPLETIONTASK *PPPDMASYNCCOMPLETIONTASK;
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| 52 |
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| 53 | /** Pointer to a PDM async completion endpoint handle. */
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| 54 | typedef struct PDMASYNCCOMPLETIONENDPOINT *PPDMASYNCCOMPLETIONENDPOINT;
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| 55 | /** Pointer to a PDM async completion endpoint handle pointer. */
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| 56 | typedef PPDMASYNCCOMPLETIONENDPOINT *PPPDMASYNCCOMPLETIONENDPOINT;
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| 57 |
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| 58 |
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| 59 | /**
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| 60 | * Completion callback for devices.
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| 61 | *
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| 62 | * @param pDevIns The device instance.
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| 63 | * @param pvUser User argument.
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| 64 | * @param rc The status code of the completed request.
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| 65 | */
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| 66 | typedef DECLCALLBACK(void) FNPDMASYNCCOMPLETEDEV(PPDMDEVINS pDevIns, void *pvUser, int rc);
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| 67 | /** Pointer to a FNPDMASYNCCOMPLETEDEV(). */
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| 68 | typedef FNPDMASYNCCOMPLETEDEV *PFNPDMASYNCCOMPLETEDEV;
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| 69 |
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| 70 |
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| 71 | /**
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| 72 | * Completion callback for drivers.
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| 73 | *
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| 74 | * @param pDrvIns The driver instance.
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| 75 | * @param pvTemplateUser User argument given when creating the template.
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| 76 | * @param pvUser User argument given during request initiation.
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| 77 | * @param rc The status code of the completed request.
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| 78 | */
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| 79 | typedef DECLCALLBACK(void) FNPDMASYNCCOMPLETEDRV(PPDMDRVINS pDrvIns, void *pvTemplateUser, void *pvUser, int rc);
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| 80 | /** Pointer to a FNPDMASYNCCOMPLETEDRV(). */
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| 81 | typedef FNPDMASYNCCOMPLETEDRV *PFNPDMASYNCCOMPLETEDRV;
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| 82 |
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| 83 |
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| 84 | /**
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| 85 | * Completion callback for USB devices.
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| 86 | *
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| 87 | * @param pUsbIns The USB device instance.
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| 88 | * @param pvUser User argument.
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| 89 | * @param rc The status code of the completed request.
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| 90 | */
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| 91 | typedef DECLCALLBACK(void) FNPDMASYNCCOMPLETEUSB(PPDMUSBINS pUsbIns, void *pvUser, int rc);
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| 92 | /** Pointer to a FNPDMASYNCCOMPLETEUSB(). */
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| 93 | typedef FNPDMASYNCCOMPLETEUSB *PFNPDMASYNCCOMPLETEUSB;
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| 94 |
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| 95 |
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| 96 | /**
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| 97 | * Completion callback for internal.
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| 98 | *
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| 99 | * @param pVM The cross context VM structure.
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| 100 | * @param pvUser User argument for the task.
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| 101 | * @param pvUser2 User argument for the template.
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| 102 | * @param rc The status code of the completed request.
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| 103 | */
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| 104 | typedef DECLCALLBACK(void) FNPDMASYNCCOMPLETEINT(PVM pVM, void *pvUser, void *pvUser2, int rc);
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| 105 | /** Pointer to a FNPDMASYNCCOMPLETEINT(). */
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| 106 | typedef FNPDMASYNCCOMPLETEINT *PFNPDMASYNCCOMPLETEINT;
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| 107 |
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| 108 | VMMR3DECL(int) PDMR3AsyncCompletionTemplateCreateInternal(PVM pVM, PPPDMASYNCCOMPLETIONTEMPLATE ppTemplate,
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| 109 | PFNPDMASYNCCOMPLETEINT pfnCompleted, void *pvUser2, const char *pszDesc);
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| 110 | VMMR3DECL(int) PDMR3AsyncCompletionTemplateDestroy(PPDMASYNCCOMPLETIONTEMPLATE pTemplate);
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| 111 | VMMR3DECL(int) PDMR3AsyncCompletionEpCreateForFile(PPPDMASYNCCOMPLETIONENDPOINT ppEndpoint,
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| 112 | const char *pszFilename, uint32_t fFlags,
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| 113 | PPDMASYNCCOMPLETIONTEMPLATE pTemplate);
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| 114 |
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| 115 | /** @defgroup grp_pdmacep_file_flags Flags for PDMR3AsyncCompletionEpCreateForFile
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| 116 | * @{ */
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| 117 | /** Open the file in read-only mode. */
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| 118 | #define PDMACEP_FILE_FLAGS_READ_ONLY RT_BIT_32(0)
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| 119 | /** Whether the file should not be write protected.
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| 120 | * The default is to protect the file against writes by other processes
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| 121 | * when opened in read/write mode to prevent data corruption by
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| 122 | * concurrent access which can occur if the local writeback cache is enabled.
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| 123 | */
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| 124 | #define PDMACEP_FILE_FLAGS_DONT_LOCK RT_BIT_32(2)
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| 125 | /** Open the endpoint with the host cache enabled. */
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| 126 | #define PDMACEP_FILE_FLAGS_HOST_CACHE_ENABLED RT_BIT_32(3)
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| 127 | /** @} */
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| 128 |
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| 129 | VMMR3DECL(void) PDMR3AsyncCompletionEpClose(PPDMASYNCCOMPLETIONENDPOINT pEndpoint);
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| 130 | VMMR3DECL(int) PDMR3AsyncCompletionEpRead(PPDMASYNCCOMPLETIONENDPOINT pEndpoint, RTFOFF off,
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| 131 | PCRTSGSEG paSegments, unsigned cSegments,
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| 132 | size_t cbRead, void *pvUser,
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| 133 | PPPDMASYNCCOMPLETIONTASK ppTask);
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| 134 | VMMR3DECL(int) PDMR3AsyncCompletionEpWrite(PPDMASYNCCOMPLETIONENDPOINT pEndpoint, RTFOFF off,
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| 135 | PCRTSGSEG paSegments, unsigned cSegments,
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| 136 | size_t cbWrite, void *pvUser,
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| 137 | PPPDMASYNCCOMPLETIONTASK ppTask);
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| 138 | VMMR3DECL(int) PDMR3AsyncCompletionEpFlush(PPDMASYNCCOMPLETIONENDPOINT pEndpoint, void *pvUser, PPPDMASYNCCOMPLETIONTASK ppTask);
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| 139 | VMMR3DECL(int) PDMR3AsyncCompletionEpGetSize(PPDMASYNCCOMPLETIONENDPOINT pEndpoint, uint64_t *pcbSize);
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| 140 | VMMR3DECL(int) PDMR3AsyncCompletionEpSetSize(PPDMASYNCCOMPLETIONENDPOINT pEndpoint, uint64_t cbSize);
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| 141 | VMMR3DECL(int) PDMR3AsyncCompletionEpSetBwMgr(PPDMASYNCCOMPLETIONENDPOINT pEndpoint, const char *pszBwMgr);
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| 142 | VMMR3DECL(int) PDMR3AsyncCompletionTaskCancel(PPDMASYNCCOMPLETIONTASK pTask);
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| 143 | VMMR3DECL(int) PDMR3AsyncCompletionBwMgrSetMaxForFile(PUVM pUVM, const char *pszBwMgr, uint32_t cbMaxNew);
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| 144 |
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| 145 | /** @} */
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| 146 |
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| 147 | RT_C_DECLS_END
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| 148 |
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| 149 | #endif /* !VBOX_INCLUDED_vmm_pdmasynccompletion_h */
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| 150 |
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