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/* $Id: PDMR0Driver.cpp $ */
/** @file
* PDM - Pluggable Device and Driver Manager, R0 Driver parts.
*/
/*
* Copyright (C) 2010-2020 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#define LOG_GROUP LOG_GROUP_PDM_DRIVER
#include "PDMInternal.h"
#include <VBox/vmm/pdm.h>
#include <VBox/vmm/vmcc.h>
#include <VBox/vmm/gvmm.h>
#include <VBox/log.h>
#include <iprt/errcore.h>
#include <iprt/assert.h>
/*********************************************************************************************************************************
* Global Variables *
*********************************************************************************************************************************/
RT_C_DECLS_BEGIN
extern DECLEXPORT(const PDMDRVHLPR0) g_pdmR0DrvHlp;
RT_C_DECLS_END
/** @name Ring-0 Context Driver Helpers
* @{
*/
/** @interface_method_impl{PDMDRVHLPR0,pfnVMSetError} */
static DECLCALLBACK(int) pdmR0DrvHlp_VMSetError(PPDMDRVINS pDrvIns, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
{
PDMDRV_ASSERT_DRVINS(pDrvIns);
va_list args;
va_start(args, pszFormat);
int rc2 = VMSetErrorV(pDrvIns->Internal.s.pVMR0, rc, RT_SRC_POS_ARGS, pszFormat, args); Assert(rc2 == rc); NOREF(rc2);
va_end(args);
return rc;
}
/** @interface_method_impl{PDMDRVHLPR0,pfnVMSetErrorV} */
static DECLCALLBACK(int) pdmR0DrvHlp_VMSetErrorV(PPDMDRVINS pDrvIns, int rc, RT_SRC_POS_DECL, const char *pszFormat, va_list va)
{
PDMDRV_ASSERT_DRVINS(pDrvIns);
int rc2 = VMSetErrorV(pDrvIns->Internal.s.pVMR0, rc, RT_SRC_POS_ARGS, pszFormat, va); Assert(rc2 == rc); NOREF(rc2);
return rc;
}
/** @interface_method_impl{PDMDRVHLPR0,pfnVMSetRuntimeError} */
static DECLCALLBACK(int) pdmR0DrvHlp_VMSetRuntimeError(PPDMDRVINS pDrvIns, uint32_t fFlags, const char *pszErrorId,
const char *pszFormat, ...)
{
PDMDRV_ASSERT_DRVINS(pDrvIns);
va_list va;
va_start(va, pszFormat);
int rc = VMSetRuntimeErrorV(pDrvIns->Internal.s.pVMR0, fFlags, pszErrorId, pszFormat, va);
va_end(va);
return rc;
}
/** @interface_method_impl{PDMDRVHLPR0,pfnVMSetRuntimeErrorV} */
static DECLCALLBACK(int) pdmR0DrvHlp_VMSetRuntimeErrorV(PPDMDRVINS pDrvIns, uint32_t fFlags, const char *pszErrorId,
const char *pszFormat, va_list va)
{
PDMDRV_ASSERT_DRVINS(pDrvIns);
int rc = VMSetRuntimeErrorV(pDrvIns->Internal.s.pVMR0, fFlags, pszErrorId, pszFormat, va);
return rc;
}
/** @interface_method_impl{PDMDRVHLPR0,pfnAssertEMT} */
static DECLCALLBACK(bool) pdmR0DrvHlp_AssertEMT(PPDMDRVINS pDrvIns, const char *pszFile, unsigned iLine, const char *pszFunction)
{
PDMDRV_ASSERT_DRVINS(pDrvIns);
if (VM_IS_EMT(pDrvIns->Internal.s.pVMR0))
return true;
RTAssertMsg1Weak("AssertEMT", iLine, pszFile, pszFunction);
RTAssertPanic();
return false;
}
/** @interface_method_impl{PDMDRVHLPR0,pfnAssertOther} */
static DECLCALLBACK(bool) pdmR0DrvHlp_AssertOther(PPDMDRVINS pDrvIns, const char *pszFile, unsigned iLine, const char *pszFunction)
{
PDMDRV_ASSERT_DRVINS(pDrvIns);
if (!VM_IS_EMT(pDrvIns->Internal.s.pVMR0))
return true;
RTAssertMsg1Weak("AssertOther", iLine, pszFile, pszFunction);
RTAssertPanic();
return false;
}
/**
* The Ring-0 Context Driver Helper Callbacks.
*/
extern DECLEXPORT(const PDMDRVHLPR0) g_pdmR0DrvHlp =
{
PDM_DRVHLPRC_VERSION,
pdmR0DrvHlp_VMSetError,
pdmR0DrvHlp_VMSetErrorV,
pdmR0DrvHlp_VMSetRuntimeError,
pdmR0DrvHlp_VMSetRuntimeErrorV,
pdmR0DrvHlp_AssertEMT,
pdmR0DrvHlp_AssertOther,
PDM_DRVHLPRC_VERSION
};
/** @} */
/**
* PDMDrvHlpCallR0 helper.
*
* @returns See PFNPDMDRVREQHANDLERR0.
* @param pGVM The global (ring-0) VM structure. (For validation.)
* @param pReq Pointer to the request buffer.
*/
VMMR0_INT_DECL(int) PDMR0DriverCallReqHandler(PGVM pGVM, PPDMDRIVERCALLREQHANDLERREQ pReq)
{
/*
* Validate input and make the call.
*/
int rc = GVMMR0ValidateGVM(pGVM);
if (RT_SUCCESS(rc))
{
AssertPtrReturn(pReq, VERR_INVALID_POINTER);
AssertMsgReturn(pReq->Hdr.cbReq == sizeof(*pReq), ("%#x != %#x\n", pReq->Hdr.cbReq, sizeof(*pReq)), VERR_INVALID_PARAMETER);
PPDMDRVINS pDrvIns = pReq->pDrvInsR0;
AssertPtrReturn(pDrvIns, VERR_INVALID_POINTER);
AssertReturn(pDrvIns->Internal.s.pVMR0 == pGVM, VERR_INVALID_PARAMETER);
PFNPDMDRVREQHANDLERR0 pfnReqHandlerR0 = pDrvIns->Internal.s.pfnReqHandlerR0;
AssertPtrReturn(pfnReqHandlerR0, VERR_INVALID_POINTER);
rc = pfnReqHandlerR0(pDrvIns, pReq->uOperation, pReq->u64Arg);
}
return rc;
}
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