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/* $Id: timesupref.cpp $ */
/** @file
* IPRT - Time using SUPLib, the C Implementation.
*/
/*
* Copyright (C) 2006-2019 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.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
#if !defined(IN_GUEST) && !defined(RT_NO_GIP)
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <iprt/time.h>
#include "internal/iprt.h"
#include <iprt/asm.h>
#include <iprt/asm-math.h>
#include <iprt/asm-amd64-x86.h>
#include <iprt/param.h>
#include <iprt/string.h>
#include <VBox/sup.h>
#ifdef IN_RC
# include <VBox/vmm/vmm.h>
# include <VBox/vmm/vm.h>
#endif
#include "internal/time.h"
#define TMPL_MODE_SYNC_INVAR_NO_DELTA 1
#define TMPL_MODE_SYNC_INVAR_WITH_DELTA 2
#define TMPL_MODE_ASYNC 3
/*
* Use the XCHG instruction for some kind of serialization.
*/
#define TMPL_READ_FENCE() ASMReadFence()
#undef TMPL_MODE
#define TMPL_MODE TMPL_MODE_SYNC_INVAR_NO_DELTA
#undef TMPL_GET_CPU_METHOD
#define TMPL_GET_CPU_METHOD 0
#undef rtTimeNanoTSInternalRef
#define rtTimeNanoTSInternalRef RTTimeNanoTSLegacySyncInvarNoDelta
#include "timesupref.h"
RT_EXPORT_SYMBOL(RTTimeNanoTSLegacySyncInvarNoDelta);
#ifdef IN_RING3
# undef TMPL_MODE
# define TMPL_MODE TMPL_MODE_SYNC_INVAR_WITH_DELTA
# undef TMPL_GET_CPU_METHOD
# define TMPL_GET_CPU_METHOD SUPGIPGETCPU_APIC_ID
# undef rtTimeNanoTSInternalRef
# define rtTimeNanoTSInternalRef RTTimeNanoTSLegacySyncInvarWithDeltaUseApicId
# include "timesupref.h"
RT_EXPORT_SYMBOL(RTTimeNanoTSLegacySyncInvarWithDeltaUseApicId);
# undef TMPL_GET_CPU_METHOD
# define TMPL_GET_CPU_METHOD SUPGIPGETCPU_RDTSCP_MASK_MAX_SET_CPUS
# undef rtTimeNanoTSInternalRef
# define rtTimeNanoTSInternalRef RTTimeNanoTSLegacySyncInvarWithDeltaUseRdtscp
# include "timesupref.h"
RT_EXPORT_SYMBOL(RTTimeNanoTSLegacySyncInvarWithDeltaUseRdtscp);
# undef TMPL_GET_CPU_METHOD
# define TMPL_GET_CPU_METHOD SUPGIPGETCPU_IDTR_LIMIT_MASK_MAX_SET_CPUS
# undef rtTimeNanoTSInternalRef
# define rtTimeNanoTSInternalRef RTTimeNanoTSLegacySyncInvarWithDeltaUseIdtrLim
# include "timesupref.h"
RT_EXPORT_SYMBOL(RTTimeNanoTSLegacySyncInvarWithDeltaUseIdtrLim);
# undef TMPL_MODE
# define TMPL_MODE TMPL_MODE_ASYNC
# undef TMPL_GET_CPU_METHOD
# define TMPL_GET_CPU_METHOD SUPGIPGETCPU_APIC_ID
# undef rtTimeNanoTSInternalRef
# define rtTimeNanoTSInternalRef RTTimeNanoTSLegacyAsyncUseApicId
# include "timesupref.h"
RT_EXPORT_SYMBOL(RTTimeNanoTSLegacyAsyncUseApicId);
# undef TMPL_GET_CPU_METHOD
# define TMPL_GET_CPU_METHOD SUPGIPGETCPU_RDTSCP_MASK_MAX_SET_CPUS
# undef rtTimeNanoTSInternalRef
# define rtTimeNanoTSInternalRef RTTimeNanoTSLegacyAsyncUseRdtscp
# include "timesupref.h"
RT_EXPORT_SYMBOL(RTTimeNanoTSLegacyAsyncUseRdtscp);
# undef TMPL_GET_CPU_METHOD
# define TMPL_GET_CPU_METHOD SUPGIPGETCPU_IDTR_LIMIT_MASK_MAX_SET_CPUS
# undef rtTimeNanoTSInternalRef
# define rtTimeNanoTSInternalRef RTTimeNanoTSLegacyAsyncUseIdtrLim
# include "timesupref.h"
RT_EXPORT_SYMBOL(RTTimeNanoTSLegacyAsyncUseIdtrLim);
# undef TMPL_GET_CPU_METHOD
# define TMPL_GET_CPU_METHOD SUPGIPGETCPU_RDTSCP_GROUP_IN_CH_NUMBER_IN_CL
# undef rtTimeNanoTSInternalRef
# define rtTimeNanoTSInternalRef RTTimeNanoTSLegacyAsyncUseRdtscpGroupChNumCl
# include "timesupref.h"
RT_EXPORT_SYMBOL(RTTimeNanoTSLegacyAsyncUseRdtscpGroupChNumCl);
#else /* IN_RC || IN_RING0: Disable interrupts and call getter function. */
# undef TMPL_MODE
# define TMPL_MODE TMPL_MODE_SYNC_INVAR_WITH_DELTA
# undef TMPL_GET_CPU_METHOD
# define TMPL_GET_CPU_METHOD UINT32_MAX
# undef rtTimeNanoTSInternalRef
# define rtTimeNanoTSInternalRef RTTimeNanoTSLegacySyncInvarWithDelta
# include "timesupref.h"
RT_EXPORT_SYMBOL(RTTimeNanoTSLegacySyncInvarWithDelta);
# undef TMPL_MODE
# define TMPL_MODE TMPL_MODE_ASYNC
# undef rtTimeNanoTSInternalRef
# define rtTimeNanoTSInternalRef RTTimeNanoTSLegacyAsync
# include "timesupref.h"
RT_EXPORT_SYMBOL(RTTimeNanoTSLegacyAsync);
#endif
/*
* Use LFENCE for load serialization.
*/
#undef TMPL_READ_FENCE
#define TMPL_READ_FENCE() ASMReadFenceSSE2()
#undef TMPL_MODE
#define TMPL_MODE TMPL_MODE_SYNC_INVAR_NO_DELTA
#undef TMPL_GET_CPU_METHOD
#define TMPL_GET_CPU_METHOD 0
#undef rtTimeNanoTSInternalRef
#define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceSyncInvarNoDelta
#include "timesupref.h"
RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceSyncInvarNoDelta);
#ifdef IN_RING3
# undef TMPL_MODE
# define TMPL_MODE TMPL_MODE_SYNC_INVAR_WITH_DELTA
# undef TMPL_GET_CPU_METHOD
# define TMPL_GET_CPU_METHOD SUPGIPGETCPU_APIC_ID
# undef rtTimeNanoTSInternalRef
# define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceSyncInvarWithDeltaUseApicId
# include "timesupref.h"
RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceSyncInvarWithDeltaUseApicId);
# undef TMPL_GET_CPU_METHOD
# define TMPL_GET_CPU_METHOD SUPGIPGETCPU_RDTSCP_MASK_MAX_SET_CPUS
# undef rtTimeNanoTSInternalRef
# define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceSyncInvarWithDeltaUseRdtscp
# include "timesupref.h"
RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceSyncInvarWithDeltaUseRdtscp);
# undef TMPL_GET_CPU_METHOD
# define TMPL_GET_CPU_METHOD SUPGIPGETCPU_IDTR_LIMIT_MASK_MAX_SET_CPUS
# undef rtTimeNanoTSInternalRef
# define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceSyncInvarWithDeltaUseIdtrLim
# include "timesupref.h"
RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceSyncInvarWithDeltaUseIdtrLim);
# undef TMPL_MODE
# define TMPL_MODE TMPL_MODE_ASYNC
# undef TMPL_GET_CPU_METHOD
# define TMPL_GET_CPU_METHOD SUPGIPGETCPU_APIC_ID
# undef rtTimeNanoTSInternalRef
# define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceAsyncUseApicId
# include "timesupref.h"
RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceAsyncUseApicId);
# undef TMPL_GET_CPU_METHOD
# define TMPL_GET_CPU_METHOD SUPGIPGETCPU_RDTSCP_MASK_MAX_SET_CPUS
# undef rtTimeNanoTSInternalRef
# define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceAsyncUseRdtscp
# include "timesupref.h"
RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceAsyncUseRdtscp);
# undef TMPL_GET_CPU_METHOD
# define TMPL_GET_CPU_METHOD SUPGIPGETCPU_IDTR_LIMIT_MASK_MAX_SET_CPUS
# undef rtTimeNanoTSInternalRef
# define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceAsyncUseIdtrLim
# include "timesupref.h"
RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceAsyncUseIdtrLim);
# undef TMPL_GET_CPU_METHOD
# define TMPL_GET_CPU_METHOD SUPGIPGETCPU_RDTSCP_GROUP_IN_CH_NUMBER_IN_CL
# undef rtTimeNanoTSInternalRef
# define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceAsyncUseRdtscpGroupChNumCl
# include "timesupref.h"
RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceAsyncUseRdtscpGroupChNumCl);
#else /* IN_RC || IN_RING0: Disable interrupts and call getter function. */
# undef TMPL_MODE
# define TMPL_MODE TMPL_MODE_SYNC_INVAR_WITH_DELTA
# undef TMPL_GET_CPU_METHOD
# define TMPL_GET_CPU_METHOD UINT32_MAX
# undef rtTimeNanoTSInternalRef
# define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceSyncInvarWithDelta
# include "timesupref.h"
RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceSyncInvarWithDelta);
# undef TMPL_MODE
# define TMPL_MODE TMPL_MODE_ASYNC
# undef rtTimeNanoTSInternalRef
# define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceAsync
# include "timesupref.h"
RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceAsync);
#endif
#endif /* !IN_GUEST && !RT_NO_GIP */
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