[28425] | 1 | /* $Id: PDMR0Driver.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
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| 2 | /** @file
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| 3 | * PDM - Pluggable Device and Driver Manager, R0 Driver parts.
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| 4 | */
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| 5 |
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| 6 | /*
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[98103] | 7 | * Copyright (C) 2010-2023 Oracle and/or its affiliates.
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[28425] | 8 | *
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[96407] | 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * SPDX-License-Identifier: GPL-3.0-only
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[28425] | 26 | */
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| 27 |
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[57358] | 28 |
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| 29 | /*********************************************************************************************************************************
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| 30 | * Header Files *
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| 31 | *********************************************************************************************************************************/
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[28425] | 32 | #define LOG_GROUP LOG_GROUP_PDM_DRIVER
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| 33 | #include "PDMInternal.h"
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[35346] | 34 | #include <VBox/vmm/pdm.h>
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[80274] | 35 | #include <VBox/vmm/vmcc.h>
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[68009] | 36 | #include <VBox/vmm/gvmm.h>
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[28425] | 37 |
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| 38 | #include <VBox/log.h>
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[76454] | 39 | #include <iprt/errcore.h>
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[28425] | 40 | #include <iprt/assert.h>
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| 41 |
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| 42 |
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[84071] | 43 | /*********************************************************************************************************************************
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| 44 | * Global Variables *
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| 45 | *********************************************************************************************************************************/
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| 46 | RT_C_DECLS_BEGIN
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| 47 | extern DECLEXPORT(const PDMDRVHLPR0) g_pdmR0DrvHlp;
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| 48 | RT_C_DECLS_END
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[28425] | 49 |
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[84071] | 50 |
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[84007] | 51 | /** @name Ring-0 Context Driver Helpers
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| 52 | * @{
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| 53 | */
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| 54 |
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| 55 | /** @interface_method_impl{PDMDRVHLPR0,pfnAssertEMT} */
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| 56 | static DECLCALLBACK(bool) pdmR0DrvHlp_AssertEMT(PPDMDRVINS pDrvIns, const char *pszFile, unsigned iLine, const char *pszFunction)
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| 57 | {
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| 58 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 59 | if (VM_IS_EMT(pDrvIns->Internal.s.pVMR0))
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| 60 | return true;
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| 61 |
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| 62 | RTAssertMsg1Weak("AssertEMT", iLine, pszFile, pszFunction);
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| 63 | RTAssertPanic();
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| 64 | return false;
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| 65 | }
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| 66 |
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| 67 |
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| 68 | /** @interface_method_impl{PDMDRVHLPR0,pfnAssertOther} */
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| 69 | static DECLCALLBACK(bool) pdmR0DrvHlp_AssertOther(PPDMDRVINS pDrvIns, const char *pszFile, unsigned iLine, const char *pszFunction)
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| 70 | {
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| 71 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 72 | if (!VM_IS_EMT(pDrvIns->Internal.s.pVMR0))
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| 73 | return true;
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| 74 |
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| 75 | RTAssertMsg1Weak("AssertOther", iLine, pszFile, pszFunction);
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| 76 | RTAssertPanic();
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| 77 | return false;
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| 78 | }
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| 79 |
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| 80 |
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[90329] | 81 | /** @interface_method_impl{PDMDRVHLPR0,pfnCritSectEnter} */
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| 82 | static DECLCALLBACK(int) pdmR0DrvHlp_CritSectEnter(PPDMDRVINS pDrvIns, PPDMCRITSECT pCritSect, int rcBusy)
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| 83 | {
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| 84 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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[90346] | 85 | return PDMCritSectEnter(pDrvIns->Internal.s.pVMR0, pCritSect, rcBusy);
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[90329] | 86 | }
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| 87 |
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| 88 |
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| 89 | /** @interface_method_impl{PDMDRVHLPR0,pfnCritSectEnterDebug} */
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| 90 | static DECLCALLBACK(int) pdmR0DrvHlp_CritSectEnterDebug(PPDMDRVINS pDrvIns, PPDMCRITSECT pCritSect, int rcBusy,
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| 91 | RTHCUINTPTR uId, RT_SRC_POS_DECL)
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| 92 | {
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| 93 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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[90346] | 94 | return PDMCritSectEnterDebug(pDrvIns->Internal.s.pVMR0, pCritSect, rcBusy, uId, RT_SRC_POS_ARGS);
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[90329] | 95 | }
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| 96 |
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| 97 |
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| 98 | /** @interface_method_impl{PDMDRVHLPR0,pfnCritSectTryEnter} */
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| 99 | static DECLCALLBACK(int) pdmR0DrvHlp_CritSectTryEnter(PPDMDRVINS pDrvIns, PPDMCRITSECT pCritSect)
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| 100 | {
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| 101 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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[90346] | 102 | return PDMCritSectTryEnter(pDrvIns->Internal.s.pVMR0, pCritSect);
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[90329] | 103 | }
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| 104 |
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| 105 |
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| 106 | /** @interface_method_impl{PDMDRVHLPR0,pfnCritSectTryEnterDebug} */
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| 107 | static DECLCALLBACK(int) pdmR0DrvHlp_CritSectTryEnterDebug(PPDMDRVINS pDrvIns, PPDMCRITSECT pCritSect,
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| 108 | RTHCUINTPTR uId, RT_SRC_POS_DECL)
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| 109 | {
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| 110 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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[90346] | 111 | return PDMCritSectTryEnterDebug(pDrvIns->Internal.s.pVMR0, pCritSect, uId, RT_SRC_POS_ARGS);
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[90329] | 112 | }
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| 113 |
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| 114 |
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| 115 | /** @interface_method_impl{PDMDRVHLPR0,pfnCritSectLeave} */
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| 116 | static DECLCALLBACK(int) pdmR0DrvHlp_CritSectLeave(PPDMDRVINS pDrvIns, PPDMCRITSECT pCritSect)
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| 117 | {
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| 118 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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[90346] | 119 | return PDMCritSectLeave(pDrvIns->Internal.s.pVMR0, pCritSect);
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[90329] | 120 | }
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| 121 |
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| 122 |
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| 123 | /** @interface_method_impl{PDMDRVHLPR0,pfnCritSectIsOwner} */
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| 124 | static DECLCALLBACK(bool) pdmR0DrvHlp_CritSectIsOwner(PPDMDRVINS pDrvIns, PCPDMCRITSECT pCritSect)
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| 125 | {
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| 126 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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[90346] | 127 | return PDMCritSectIsOwner(pDrvIns->Internal.s.pVMR0, pCritSect);
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[90329] | 128 | }
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| 129 |
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| 130 |
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| 131 | /** @interface_method_impl{PDMDRVHLPR0,pfnCritSectIsInitialized} */
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| 132 | static DECLCALLBACK(bool) pdmR0DrvHlp_CritSectIsInitialized(PPDMDRVINS pDrvIns, PCPDMCRITSECT pCritSect)
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| 133 | {
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| 134 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 135 | NOREF(pDrvIns);
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| 136 | return PDMCritSectIsInitialized(pCritSect);
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| 137 | }
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| 138 |
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| 139 |
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| 140 | /** @interface_method_impl{PDMDRVHLPR0,pfnCritSectHasWaiters} */
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| 141 | static DECLCALLBACK(bool) pdmR0DrvHlp_CritSectHasWaiters(PPDMDRVINS pDrvIns, PCPDMCRITSECT pCritSect)
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| 142 | {
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| 143 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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[90346] | 144 | return PDMCritSectHasWaiters(pDrvIns->Internal.s.pVMR0, pCritSect);
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[90329] | 145 | }
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| 146 |
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| 147 |
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| 148 | /** @interface_method_impl{PDMDRVHLPR0,pfnCritSectGetRecursion} */
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| 149 | static DECLCALLBACK(uint32_t) pdmR0DrvHlp_CritSectGetRecursion(PPDMDRVINS pDrvIns, PCPDMCRITSECT pCritSect)
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| 150 | {
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| 151 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 152 | NOREF(pDrvIns);
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| 153 | return PDMCritSectGetRecursion(pCritSect);
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| 154 | }
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| 155 |
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| 156 |
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[90382] | 157 | /** @interface_method_impl{PDMDRVHLPR0,pfnCritSectScheduleExitEvent} */
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[90329] | 158 | static DECLCALLBACK(int) pdmR0DrvHlp_CritSectScheduleExitEvent(PPDMDRVINS pDrvIns, PPDMCRITSECT pCritSect,
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| 159 | SUPSEMEVENT hEventToSignal)
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| 160 | {
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| 161 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 162 | NOREF(pDrvIns);
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| 163 | return PDMHCCritSectScheduleExitEvent(pCritSect, hEventToSignal);
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| 164 | }
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| 165 |
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| 166 |
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[90346] | 167 | /** @interface_method_impl{PDMDRVHLPR0,pfnNetShaperAllocateBandwidth} */
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| 168 | static DECLCALLBACK(bool) pdmR0DrvHlp_NetShaperAllocateBandwidth(PPDMDRVINS pDrvIns, PPDMNSFILTER pFilter, size_t cbTransfer)
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| 169 | {
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| 170 | #ifdef VBOX_WITH_NETSHAPER
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| 171 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 172 | LogFlow(("pdmR0DrvHlp_NetShaperDetach: caller='%s'/%d: pFilter=%p cbTransfer=%#zx\n",
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| 173 | pDrvIns->pReg->szName, pDrvIns->iInstance, pFilter, cbTransfer));
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[90329] | 174 |
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[90346] | 175 | bool const fRc = PDMNetShaperAllocateBandwidth(pDrvIns->Internal.s.pVMR0, pFilter, cbTransfer);
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[90329] | 176 |
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[90346] | 177 | LogFlow(("pdmR0DrvHlp_NetShaperDetach: caller='%s'/%d: returns %RTbool\n", pDrvIns->pReg->szName, pDrvIns->iInstance, fRc));
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| 178 | return fRc;
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| 179 | #else
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| 180 | RT_NOREF(pDrvIns, pFilter, cbTransfer);
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| 181 | return true;
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| 182 | #endif
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| 183 | }
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| 184 |
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| 185 |
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[28425] | 186 | /**
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[84007] | 187 | * The Ring-0 Context Driver Helper Callbacks.
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| 188 | */
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| 189 | extern DECLEXPORT(const PDMDRVHLPR0) g_pdmR0DrvHlp =
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| 190 | {
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| 191 | PDM_DRVHLPRC_VERSION,
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| 192 | pdmR0DrvHlp_AssertEMT,
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| 193 | pdmR0DrvHlp_AssertOther,
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[90329] | 194 | pdmR0DrvHlp_CritSectEnter,
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| 195 | pdmR0DrvHlp_CritSectEnterDebug,
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| 196 | pdmR0DrvHlp_CritSectTryEnter,
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| 197 | pdmR0DrvHlp_CritSectTryEnterDebug,
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| 198 | pdmR0DrvHlp_CritSectLeave,
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| 199 | pdmR0DrvHlp_CritSectIsOwner,
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| 200 | pdmR0DrvHlp_CritSectIsInitialized,
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| 201 | pdmR0DrvHlp_CritSectHasWaiters,
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| 202 | pdmR0DrvHlp_CritSectGetRecursion,
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| 203 | pdmR0DrvHlp_CritSectScheduleExitEvent,
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[90346] | 204 | pdmR0DrvHlp_NetShaperAllocateBandwidth,
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[84007] | 205 | PDM_DRVHLPRC_VERSION
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| 206 | };
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| 207 |
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| 208 | /** @} */
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| 209 |
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| 210 |
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| 211 |
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| 212 | /**
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[28425] | 213 | * PDMDrvHlpCallR0 helper.
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| 214 | *
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| 215 | * @returns See PFNPDMDRVREQHANDLERR0.
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[68009] | 216 | * @param pGVM The global (ring-0) VM structure. (For validation.)
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[58122] | 217 | * @param pReq Pointer to the request buffer.
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[28425] | 218 | */
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[80346] | 219 | VMMR0_INT_DECL(int) PDMR0DriverCallReqHandler(PGVM pGVM, PPDMDRIVERCALLREQHANDLERREQ pReq)
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[28425] | 220 | {
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| 221 | /*
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| 222 | * Validate input and make the call.
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| 223 | */
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[80346] | 224 | int rc = GVMMR0ValidateGVM(pGVM);
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[68009] | 225 | if (RT_SUCCESS(rc))
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| 226 | {
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| 227 | AssertPtrReturn(pReq, VERR_INVALID_POINTER);
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| 228 | AssertMsgReturn(pReq->Hdr.cbReq == sizeof(*pReq), ("%#x != %#x\n", pReq->Hdr.cbReq, sizeof(*pReq)), VERR_INVALID_PARAMETER);
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[28425] | 229 |
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[68009] | 230 | PPDMDRVINS pDrvIns = pReq->pDrvInsR0;
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| 231 | AssertPtrReturn(pDrvIns, VERR_INVALID_POINTER);
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[80346] | 232 | AssertReturn(pDrvIns->Internal.s.pVMR0 == pGVM, VERR_INVALID_PARAMETER);
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[28425] | 233 |
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[68009] | 234 | PFNPDMDRVREQHANDLERR0 pfnReqHandlerR0 = pDrvIns->Internal.s.pfnReqHandlerR0;
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| 235 | AssertPtrReturn(pfnReqHandlerR0, VERR_INVALID_POINTER);
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[28425] | 236 |
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[68009] | 237 | rc = pfnReqHandlerR0(pDrvIns, pReq->uOperation, pReq->u64Arg);
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| 238 | }
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| 239 | return rc;
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[28425] | 240 | }
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| 241 |
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