| 1 | /* $Id: timesupref.cpp 62477 2016-07-22 18:27:37Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Time using SUPLib, the C Implementation.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2016 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 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 | #if !defined(IN_GUEST) && !defined(RT_NO_GIP)
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| 28 |
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| 29 |
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| 30 | /*********************************************************************************************************************************
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| 31 | * Header Files *
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| 32 | *********************************************************************************************************************************/
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| 33 | #include <iprt/time.h>
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| 34 | #include "internal/iprt.h"
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| 35 |
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| 36 | #include <iprt/asm.h>
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| 37 | #include <iprt/asm-math.h>
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| 38 | #include <iprt/asm-amd64-x86.h>
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| 39 | #include <VBox/sup.h>
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| 40 | #ifdef IN_RC
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| 41 | # include <VBox/vmm/vmm.h>
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| 42 | # include <VBox/vmm/vm.h>
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| 43 | #endif
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| 44 | #include "internal/time.h"
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| 45 |
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| 46 |
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| 47 | #define TMPL_MODE_SYNC_INVAR_NO_DELTA 1
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| 48 | #define TMPL_MODE_SYNC_INVAR_WITH_DELTA 2
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| 49 | #define TMPL_MODE_ASYNC 3
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| 50 |
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| 51 |
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| 52 | /*
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| 53 | * Use the XCHG instruction for some kind of serialization.
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| 54 | */
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| 55 | #define TMPL_READ_FENCE() ASMReadFence()
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| 56 |
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| 57 | #undef TMPL_MODE
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| 58 | #define TMPL_MODE TMPL_MODE_SYNC_INVAR_NO_DELTA
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| 59 | #undef TMPL_GET_CPU_METHOD
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| 60 | #define TMPL_GET_CPU_METHOD 0
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| 61 | #undef rtTimeNanoTSInternalRef
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| 62 | #define rtTimeNanoTSInternalRef RTTimeNanoTSLegacySyncInvarNoDelta
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| 63 | #include "timesupref.h"
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| 64 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacySyncInvarNoDelta);
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| 65 |
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| 66 | #ifdef IN_RING3
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| 67 |
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| 68 | # undef TMPL_MODE
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| 69 | # define TMPL_MODE TMPL_MODE_SYNC_INVAR_WITH_DELTA
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| 70 | # undef TMPL_GET_CPU_METHOD
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| 71 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_APIC_ID
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| 72 | # undef rtTimeNanoTSInternalRef
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| 73 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacySyncInvarWithDeltaUseApicId
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| 74 | # include "timesupref.h"
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| 75 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacySyncInvarWithDeltaUseApicId);
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| 76 |
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| 77 | # undef TMPL_GET_CPU_METHOD
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| 78 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_RDTSCP_MASK_MAX_SET_CPUS
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| 79 | # undef rtTimeNanoTSInternalRef
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| 80 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacySyncInvarWithDeltaUseRdtscp
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| 81 | # include "timesupref.h"
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| 82 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacySyncInvarWithDeltaUseRdtscp);
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| 83 |
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| 84 | # undef TMPL_GET_CPU_METHOD
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| 85 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_IDTR_LIMIT_MASK_MAX_SET_CPUS
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| 86 | # undef rtTimeNanoTSInternalRef
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| 87 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacySyncInvarWithDeltaUseIdtrLim
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| 88 | # include "timesupref.h"
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| 89 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacySyncInvarWithDeltaUseIdtrLim);
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| 90 |
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| 91 | # undef TMPL_MODE
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| 92 | # define TMPL_MODE TMPL_MODE_ASYNC
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| 93 | # undef TMPL_GET_CPU_METHOD
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| 94 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_APIC_ID
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| 95 | # undef rtTimeNanoTSInternalRef
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| 96 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacyAsyncUseApicId
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| 97 | # include "timesupref.h"
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| 98 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacyAsyncUseApicId);
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| 99 |
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| 100 | # undef TMPL_GET_CPU_METHOD
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| 101 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_RDTSCP_MASK_MAX_SET_CPUS
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| 102 | # undef rtTimeNanoTSInternalRef
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| 103 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacyAsyncUseRdtscp
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| 104 | # include "timesupref.h"
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| 105 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacyAsyncUseRdtscp);
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| 106 |
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| 107 | # undef TMPL_GET_CPU_METHOD
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| 108 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_IDTR_LIMIT_MASK_MAX_SET_CPUS
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| 109 | # undef rtTimeNanoTSInternalRef
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| 110 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacyAsyncUseIdtrLim
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| 111 | # include "timesupref.h"
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| 112 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacyAsyncUseIdtrLim);
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| 113 |
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| 114 | #else /* IN_RC || IN_RING0: Disable interrupts and call getter function. */
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| 115 |
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| 116 | # undef TMPL_MODE
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| 117 | # define TMPL_MODE TMPL_MODE_SYNC_INVAR_WITH_DELTA
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| 118 | # undef TMPL_GET_CPU_METHOD
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| 119 | # define TMPL_GET_CPU_METHOD UINT32_MAX
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| 120 | # undef rtTimeNanoTSInternalRef
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| 121 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacySyncInvarWithDelta
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| 122 | # include "timesupref.h"
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| 123 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacySyncInvarWithDelta);
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| 124 |
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| 125 | # undef TMPL_MODE
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| 126 | # define TMPL_MODE TMPL_MODE_ASYNC
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| 127 | # undef rtTimeNanoTSInternalRef
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| 128 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacyAsync
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| 129 | # include "timesupref.h"
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| 130 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacyAsync);
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| 131 |
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| 132 | #endif
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| 133 |
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| 134 |
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| 135 | /*
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| 136 | * Use LFENCE for load serialization.
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| 137 | */
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| 138 | #undef TMPL_READ_FENCE
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| 139 | #define TMPL_READ_FENCE() ASMReadFenceSSE2()
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| 140 |
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| 141 | #undef TMPL_MODE
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| 142 | #define TMPL_MODE TMPL_MODE_SYNC_INVAR_NO_DELTA
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| 143 | #undef TMPL_GET_CPU_METHOD
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| 144 | #define TMPL_GET_CPU_METHOD 0
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| 145 | #undef rtTimeNanoTSInternalRef
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| 146 | #define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceSyncInvarNoDelta
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| 147 | #include "timesupref.h"
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| 148 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceSyncInvarNoDelta);
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| 149 |
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| 150 | #ifdef IN_RING3
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| 151 |
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| 152 | # undef TMPL_MODE
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| 153 | # define TMPL_MODE TMPL_MODE_SYNC_INVAR_WITH_DELTA
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| 154 | # undef TMPL_GET_CPU_METHOD
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| 155 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_APIC_ID
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| 156 | # undef rtTimeNanoTSInternalRef
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| 157 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceSyncInvarWithDeltaUseApicId
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| 158 | # include "timesupref.h"
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| 159 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceSyncInvarWithDeltaUseApicId);
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| 160 |
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| 161 | # undef TMPL_GET_CPU_METHOD
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| 162 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_RDTSCP_MASK_MAX_SET_CPUS
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| 163 | # undef rtTimeNanoTSInternalRef
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| 164 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceSyncInvarWithDeltaUseRdtscp
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| 165 | # include "timesupref.h"
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| 166 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceSyncInvarWithDeltaUseRdtscp);
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| 167 |
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| 168 | # undef TMPL_GET_CPU_METHOD
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| 169 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_IDTR_LIMIT_MASK_MAX_SET_CPUS
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| 170 | # undef rtTimeNanoTSInternalRef
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| 171 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceSyncInvarWithDeltaUseIdtrLim
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| 172 | # include "timesupref.h"
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| 173 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceSyncInvarWithDeltaUseIdtrLim);
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| 174 |
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| 175 | # undef TMPL_MODE
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| 176 | # define TMPL_MODE TMPL_MODE_ASYNC
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| 177 | # undef TMPL_GET_CPU_METHOD
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| 178 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_APIC_ID
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| 179 | # undef rtTimeNanoTSInternalRef
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| 180 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceAsyncUseApicId
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| 181 | # include "timesupref.h"
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| 182 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceAsyncUseApicId);
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| 183 |
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| 184 | # undef TMPL_GET_CPU_METHOD
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| 185 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_RDTSCP_MASK_MAX_SET_CPUS
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| 186 | # undef rtTimeNanoTSInternalRef
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| 187 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceAsyncUseRdtscp
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| 188 | # include "timesupref.h"
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| 189 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceAsyncUseRdtscp);
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| 190 |
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| 191 | # undef TMPL_GET_CPU_METHOD
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| 192 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_IDTR_LIMIT_MASK_MAX_SET_CPUS
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| 193 | # undef rtTimeNanoTSInternalRef
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| 194 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceAsyncUseIdtrLim
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| 195 | # include "timesupref.h"
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| 196 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceAsyncUseIdtrLim);
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| 197 |
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| 198 | #else /* IN_RC || IN_RING0: Disable interrupts and call getter function. */
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| 199 |
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| 200 | # undef TMPL_MODE
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| 201 | # define TMPL_MODE TMPL_MODE_SYNC_INVAR_WITH_DELTA
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| 202 | # undef TMPL_GET_CPU_METHOD
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| 203 | # define TMPL_GET_CPU_METHOD UINT32_MAX
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| 204 | # undef rtTimeNanoTSInternalRef
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| 205 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceSyncInvarWithDelta
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| 206 | # include "timesupref.h"
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| 207 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceSyncInvarWithDelta);
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| 208 |
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| 209 | # undef TMPL_MODE
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| 210 | # define TMPL_MODE TMPL_MODE_ASYNC
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| 211 | # undef rtTimeNanoTSInternalRef
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| 212 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceAsync
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| 213 | # include "timesupref.h"
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| 214 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceAsync);
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| 215 |
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| 216 | #endif
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| 217 |
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| 218 |
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| 219 | #endif /* !IN_GUEST && !RT_NO_GIP */
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| 220 |
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