| 1 | /* $Id: PDMR0Driver.cpp 76553 2019-01-01 01:45:53Z 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) 2010-2019 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.virtualbox.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/vm.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 | /**
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| 35 | * PDMDrvHlpCallR0 helper.
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| 36 | *
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| 37 | * @returns See PFNPDMDRVREQHANDLERR0.
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| 38 | * @param pGVM The global (ring-0) VM structure. (For validation.)
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| 39 | * @param pVM The cross context VM structure. (For validation.)
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| 40 | * @param pReq Pointer to the request buffer.
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| 41 | */
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| 42 | VMMR0_INT_DECL(int) PDMR0DriverCallReqHandler(PGVM pGVM, PVM pVM, PPDMDRIVERCALLREQHANDLERREQ pReq)
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| 43 | {
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| 44 | /*
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| 45 | * Validate input and make the call.
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| 46 | */
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| 47 | int rc = GVMMR0ValidateGVMandVM(pGVM, pVM);
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| 48 | if (RT_SUCCESS(rc))
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| 49 | {
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| 50 | AssertPtrReturn(pReq, VERR_INVALID_POINTER);
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| 51 | AssertMsgReturn(pReq->Hdr.cbReq == sizeof(*pReq), ("%#x != %#x\n", pReq->Hdr.cbReq, sizeof(*pReq)), VERR_INVALID_PARAMETER);
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| 52 |
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| 53 | PPDMDRVINS pDrvIns = pReq->pDrvInsR0;
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| 54 | AssertPtrReturn(pDrvIns, VERR_INVALID_POINTER);
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| 55 | AssertReturn(pDrvIns->Internal.s.pVMR0 == pVM, VERR_INVALID_PARAMETER);
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| 56 |
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| 57 | PFNPDMDRVREQHANDLERR0 pfnReqHandlerR0 = pDrvIns->Internal.s.pfnReqHandlerR0;
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| 58 | AssertPtrReturn(pfnReqHandlerR0, VERR_INVALID_POINTER);
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| 59 |
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| 60 | rc = pfnReqHandlerR0(pDrvIns, pReq->uOperation, pReq->u64Arg);
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| 61 | }
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| 62 | return rc;
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| 63 | }
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| 64 |
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