| 1 | /* $Id: PDMR0Driver.cpp 90329 2021-07-26 12:47:26Z 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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| 7 | * Copyright (C) 2010-2020 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.alldomusa.eu.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 |
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| 19 | /*********************************************************************************************************************************
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| 20 | * Header Files *
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| 21 | *********************************************************************************************************************************/
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| 22 | #define LOG_GROUP LOG_GROUP_PDM_DRIVER
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| 23 | #include "PDMInternal.h"
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| 24 | #include <VBox/vmm/pdm.h>
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| 25 | #include <VBox/vmm/vmcc.h>
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| 26 | #include <VBox/vmm/gvmm.h>
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| 27 |
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| 28 | #include <VBox/log.h>
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| 29 | #include <iprt/errcore.h>
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| 30 | #include <iprt/assert.h>
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| 31 |
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| 32 |
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| 33 | /*********************************************************************************************************************************
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| 34 | * Global Variables *
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| 35 | *********************************************************************************************************************************/
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| 36 | RT_C_DECLS_BEGIN
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| 37 | extern DECLEXPORT(const PDMDRVHLPR0) g_pdmR0DrvHlp;
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| 38 | RT_C_DECLS_END
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| 39 |
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| 40 |
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| 41 | /** @name Ring-0 Context Driver Helpers
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| 42 | * @{
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| 43 | */
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| 44 |
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| 45 | /** @interface_method_impl{PDMDRVHLPR0,pfnVMSetError} */
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| 46 | static DECLCALLBACK(int) pdmR0DrvHlp_VMSetError(PPDMDRVINS pDrvIns, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
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| 47 | {
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| 48 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 49 | va_list args;
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| 50 | va_start(args, pszFormat);
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| 51 | int rc2 = VMSetErrorV(pDrvIns->Internal.s.pVMR0, rc, RT_SRC_POS_ARGS, pszFormat, args); Assert(rc2 == rc); NOREF(rc2);
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| 52 | va_end(args);
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| 53 | return rc;
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| 54 | }
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| 55 |
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| 56 |
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| 57 | /** @interface_method_impl{PDMDRVHLPR0,pfnVMSetErrorV} */
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| 58 | static DECLCALLBACK(int) pdmR0DrvHlp_VMSetErrorV(PPDMDRVINS pDrvIns, int rc, RT_SRC_POS_DECL, const char *pszFormat, va_list va)
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| 59 | {
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| 60 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 61 | int rc2 = VMSetErrorV(pDrvIns->Internal.s.pVMR0, rc, RT_SRC_POS_ARGS, pszFormat, va); Assert(rc2 == rc); NOREF(rc2);
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| 62 | return rc;
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| 63 | }
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| 64 |
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| 65 |
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| 66 | /** @interface_method_impl{PDMDRVHLPR0,pfnVMSetRuntimeError} */
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| 67 | static DECLCALLBACK(int) pdmR0DrvHlp_VMSetRuntimeError(PPDMDRVINS pDrvIns, uint32_t fFlags, const char *pszErrorId,
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| 68 | const char *pszFormat, ...)
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| 69 | {
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| 70 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 71 | va_list va;
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| 72 | va_start(va, pszFormat);
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| 73 | int rc = VMSetRuntimeErrorV(pDrvIns->Internal.s.pVMR0, fFlags, pszErrorId, pszFormat, va);
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| 74 | va_end(va);
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| 75 | return rc;
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| 76 | }
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| 77 |
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| 78 |
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| 79 | /** @interface_method_impl{PDMDRVHLPR0,pfnVMSetRuntimeErrorV} */
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| 80 | static DECLCALLBACK(int) pdmR0DrvHlp_VMSetRuntimeErrorV(PPDMDRVINS pDrvIns, uint32_t fFlags, const char *pszErrorId,
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| 81 | const char *pszFormat, va_list va)
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| 82 | {
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| 83 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 84 | int rc = VMSetRuntimeErrorV(pDrvIns->Internal.s.pVMR0, fFlags, pszErrorId, pszFormat, va);
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| 85 | return rc;
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| 86 | }
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| 87 |
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| 88 |
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| 89 | /** @interface_method_impl{PDMDRVHLPR0,pfnAssertEMT} */
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| 90 | static DECLCALLBACK(bool) pdmR0DrvHlp_AssertEMT(PPDMDRVINS pDrvIns, const char *pszFile, unsigned iLine, const char *pszFunction)
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| 91 | {
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| 92 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 93 | if (VM_IS_EMT(pDrvIns->Internal.s.pVMR0))
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| 94 | return true;
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| 95 |
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| 96 | RTAssertMsg1Weak("AssertEMT", iLine, pszFile, pszFunction);
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| 97 | RTAssertPanic();
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| 98 | return false;
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| 99 | }
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| 100 |
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| 101 |
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| 102 | /** @interface_method_impl{PDMDRVHLPR0,pfnAssertOther} */
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| 103 | static DECLCALLBACK(bool) pdmR0DrvHlp_AssertOther(PPDMDRVINS pDrvIns, const char *pszFile, unsigned iLine, const char *pszFunction)
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| 104 | {
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| 105 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 106 | if (!VM_IS_EMT(pDrvIns->Internal.s.pVMR0))
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| 107 | return true;
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| 108 |
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| 109 | RTAssertMsg1Weak("AssertOther", iLine, pszFile, pszFunction);
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| 110 | RTAssertPanic();
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| 111 | return false;
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| 112 | }
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| 113 |
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| 114 |
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| 115 | /** @interface_method_impl{PDMDRVHLPR0,pfnCritSectEnter} */
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| 116 | static DECLCALLBACK(int) pdmR0DrvHlp_CritSectEnter(PPDMDRVINS pDrvIns, PPDMCRITSECT pCritSect, int rcBusy)
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| 117 | {
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| 118 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 119 | NOREF(pDrvIns);
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| 120 | return PDMCritSectEnter(pCritSect, rcBusy);
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| 121 | }
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| 122 |
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| 123 |
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| 124 | /** @interface_method_impl{PDMDRVHLPR0,pfnCritSectEnterDebug} */
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| 125 | static DECLCALLBACK(int) pdmR0DrvHlp_CritSectEnterDebug(PPDMDRVINS pDrvIns, PPDMCRITSECT pCritSect, int rcBusy,
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| 126 | RTHCUINTPTR uId, RT_SRC_POS_DECL)
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| 127 | {
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| 128 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 129 | NOREF(pDrvIns);
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| 130 | return PDMCritSectEnterDebug(pCritSect, rcBusy, uId, RT_SRC_POS_ARGS);
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| 131 | }
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| 132 |
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| 133 |
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| 134 | /** @interface_method_impl{PDMDRVHLPR0,pfnCritSectTryEnter} */
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| 135 | static DECLCALLBACK(int) pdmR0DrvHlp_CritSectTryEnter(PPDMDRVINS pDrvIns, PPDMCRITSECT pCritSect)
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| 136 | {
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| 137 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 138 | NOREF(pDrvIns);
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| 139 | return PDMCritSectTryEnter(pCritSect);
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| 140 | }
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| 141 |
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| 142 |
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| 143 | /** @interface_method_impl{PDMDRVHLPR0,pfnCritSectTryEnterDebug} */
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| 144 | static DECLCALLBACK(int) pdmR0DrvHlp_CritSectTryEnterDebug(PPDMDRVINS pDrvIns, PPDMCRITSECT pCritSect,
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| 145 | RTHCUINTPTR uId, RT_SRC_POS_DECL)
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| 146 | {
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| 147 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 148 | NOREF(pDrvIns);
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| 149 | return PDMCritSectTryEnterDebug(pCritSect, uId, RT_SRC_POS_ARGS);
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| 150 | }
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| 151 |
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| 152 |
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| 153 | /** @interface_method_impl{PDMDRVHLPR0,pfnCritSectLeave} */
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| 154 | static DECLCALLBACK(int) pdmR0DrvHlp_CritSectLeave(PPDMDRVINS pDrvIns, PPDMCRITSECT pCritSect)
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| 155 | {
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| 156 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 157 | NOREF(pDrvIns);
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| 158 | return PDMCritSectLeave(pCritSect);
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| 159 | }
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| 160 |
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| 161 |
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| 162 | /** @interface_method_impl{PDMDRVHLPR0,pfnCritSectIsOwner} */
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| 163 | static DECLCALLBACK(bool) pdmR0DrvHlp_CritSectIsOwner(PPDMDRVINS pDrvIns, PCPDMCRITSECT pCritSect)
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| 164 | {
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| 165 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 166 | NOREF(pDrvIns);
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| 167 | return PDMCritSectIsOwner(pCritSect);
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| 168 | }
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| 169 |
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| 170 |
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| 171 | /** @interface_method_impl{PDMDRVHLPR0,pfnCritSectIsInitialized} */
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| 172 | static DECLCALLBACK(bool) pdmR0DrvHlp_CritSectIsInitialized(PPDMDRVINS pDrvIns, PCPDMCRITSECT pCritSect)
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| 173 | {
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| 174 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 175 | NOREF(pDrvIns);
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| 176 | return PDMCritSectIsInitialized(pCritSect);
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| 177 | }
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| 178 |
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| 179 |
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| 180 | /** @interface_method_impl{PDMDRVHLPR0,pfnCritSectHasWaiters} */
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| 181 | static DECLCALLBACK(bool) pdmR0DrvHlp_CritSectHasWaiters(PPDMDRVINS pDrvIns, PCPDMCRITSECT pCritSect)
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| 182 | {
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| 183 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 184 | NOREF(pDrvIns);
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| 185 | return PDMCritSectHasWaiters(pCritSect);
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| 186 | }
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| 187 |
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| 188 |
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| 189 | /** @interface_method_impl{PDMDRVHLPR0,pfnCritSectGetRecursion} */
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| 190 | static DECLCALLBACK(uint32_t) pdmR0DrvHlp_CritSectGetRecursion(PPDMDRVINS pDrvIns, PCPDMCRITSECT pCritSect)
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| 191 | {
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| 192 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 193 | NOREF(pDrvIns);
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| 194 | return PDMCritSectGetRecursion(pCritSect);
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| 195 | }
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| 196 |
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| 197 |
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| 198 | /** @interface_method_impl{PDMDRVHLPR0,pfn} */
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| 199 | static DECLCALLBACK(int) pdmR0DrvHlp_CritSectScheduleExitEvent(PPDMDRVINS pDrvIns, PPDMCRITSECT pCritSect,
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| 200 | SUPSEMEVENT hEventToSignal)
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| 201 | {
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| 202 | PDMDRV_ASSERT_DRVINS(pDrvIns);
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| 203 | NOREF(pDrvIns);
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| 204 | return PDMHCCritSectScheduleExitEvent(pCritSect, hEventToSignal);
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| 205 | }
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| 206 |
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| 207 |
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| 208 | /** @interface_method_impl{PDMDRVHLPR0,pfn} */
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| 209 |
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| 210 |
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| 211 | /**
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| 212 | * The Ring-0 Context Driver Helper Callbacks.
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| 213 | */
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| 214 | extern DECLEXPORT(const PDMDRVHLPR0) g_pdmR0DrvHlp =
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| 215 | {
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| 216 | PDM_DRVHLPRC_VERSION,
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| 217 | pdmR0DrvHlp_VMSetError,
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| 218 | pdmR0DrvHlp_VMSetErrorV,
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| 219 | pdmR0DrvHlp_VMSetRuntimeError,
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| 220 | pdmR0DrvHlp_VMSetRuntimeErrorV,
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| 221 | pdmR0DrvHlp_AssertEMT,
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| 222 | pdmR0DrvHlp_AssertOther,
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| 223 | pdmR0DrvHlp_CritSectEnter,
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| 224 | pdmR0DrvHlp_CritSectEnterDebug,
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| 225 | pdmR0DrvHlp_CritSectTryEnter,
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| 226 | pdmR0DrvHlp_CritSectTryEnterDebug,
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| 227 | pdmR0DrvHlp_CritSectLeave,
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| 228 | pdmR0DrvHlp_CritSectIsOwner,
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| 229 | pdmR0DrvHlp_CritSectIsInitialized,
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| 230 | pdmR0DrvHlp_CritSectHasWaiters,
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| 231 | pdmR0DrvHlp_CritSectGetRecursion,
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| 232 | pdmR0DrvHlp_CritSectScheduleExitEvent,
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| 233 | PDM_DRVHLPRC_VERSION
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| 234 | };
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| 235 |
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| 236 | /** @} */
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| 237 |
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| 238 |
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| 239 |
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| 240 | /**
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| 241 | * PDMDrvHlpCallR0 helper.
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| 242 | *
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| 243 | * @returns See PFNPDMDRVREQHANDLERR0.
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| 244 | * @param pGVM The global (ring-0) VM structure. (For validation.)
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| 245 | * @param pReq Pointer to the request buffer.
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| 246 | */
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| 247 | VMMR0_INT_DECL(int) PDMR0DriverCallReqHandler(PGVM pGVM, PPDMDRIVERCALLREQHANDLERREQ pReq)
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| 248 | {
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| 249 | /*
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| 250 | * Validate input and make the call.
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| 251 | */
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| 252 | int rc = GVMMR0ValidateGVM(pGVM);
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| 253 | if (RT_SUCCESS(rc))
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| 254 | {
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| 255 | AssertPtrReturn(pReq, VERR_INVALID_POINTER);
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| 256 | AssertMsgReturn(pReq->Hdr.cbReq == sizeof(*pReq), ("%#x != %#x\n", pReq->Hdr.cbReq, sizeof(*pReq)), VERR_INVALID_PARAMETER);
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| 257 |
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| 258 | PPDMDRVINS pDrvIns = pReq->pDrvInsR0;
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| 259 | AssertPtrReturn(pDrvIns, VERR_INVALID_POINTER);
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| 260 | AssertReturn(pDrvIns->Internal.s.pVMR0 == pGVM, VERR_INVALID_PARAMETER);
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| 261 |
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| 262 | PFNPDMDRVREQHANDLERR0 pfnReqHandlerR0 = pDrvIns->Internal.s.pfnReqHandlerR0;
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| 263 | AssertPtrReturn(pfnReqHandlerR0, VERR_INVALID_POINTER);
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| 264 |
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| 265 | rc = pfnReqHandlerR0(pDrvIns, pReq->uOperation, pReq->u64Arg);
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| 266 | }
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| 267 | return rc;
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| 268 | }
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| 269 |
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