| 1 | /* $Id: GIMAll.cpp 51367 2014-05-23 07:45:35Z vboxsync $ */
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| 2 | /** @file
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| 3 | * GIM - Guest Interface Manager - All Contexts.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2014 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_GIM
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| 23 | #include "GIMInternal.h"
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| 24 | #include <VBox/err.h>
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| 25 | #include <VBox/vmm/vm.h>
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| 26 |
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| 27 | /* Include all the providers. */
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| 28 | #include "GIMHvInternal.h"
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| 29 | #include "GIMMinimalInternal.h"
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| 30 |
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| 31 |
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| 32 | /**
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| 33 | * Checks whether GIM is being used by this VM.
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| 34 | *
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| 35 | * @retval @c true if used.
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| 36 | * @retval @c false if no GIM provider ("none") is used.
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| 37 | *
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| 38 | * @param pVM Pointer to the VM.
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| 39 | * @internal
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| 40 | */
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| 41 | VMMDECL(bool) GIMIsEnabled(PVM pVM)
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| 42 | {
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| 43 | return pVM->gim.s.fEnabled;
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| 44 | }
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| 45 |
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| 46 |
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| 47 | /**
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| 48 | * Implements a GIM hypercall with the provider configured for the VM.
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| 49 | *
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| 50 | * @returns VBox status code.
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| 51 | * @param pVCpu Pointer to the VMCPU.
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| 52 | * @param pCtx Pointer to the guest-CPU context.
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| 53 | */
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| 54 | VMM_INT_DECL(int) GIMHypercall(PVMCPU pVCpu, PCPUMCTX pCtx)
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| 55 | {
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| 56 | PVM pVM = pVCpu->CTX_SUFF(pVM);
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| 57 | Assert(GIMIsEnabled(pVM));
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| 58 | VMCPU_ASSERT_EMT(pVCpu);
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| 59 |
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| 60 | switch (pVM->gim.s.enmProviderId)
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| 61 | {
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| 62 | case GIMPROVIDERID_HYPERV:
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| 63 | return GIMHvHypercall(pVCpu, pCtx);
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| 64 |
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| 65 | default:
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| 66 | AssertMsgFailed(("GIMHypercall: for unknown provider %u\n", pVM->gim.s.enmProviderId));
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| 67 | return VERR_INTERNAL_ERROR_5; /** @todo Define and use VERR_GIM_HYPERCALL_UNEXPECTED */;
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| 68 | }
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| 69 | }
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| 70 |
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| 71 |
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| 72 | /**
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| 73 | * Invokes the read-MSR handler for the GIM provider configured for the VM.
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| 74 | *
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| 75 | * @returns VBox status code.
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| 76 | * @param pVCpu Pointer to the VMCPU.
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| 77 | * @param idMsr The MSR to read.
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| 78 | * @param pRange The range this MSR belongs to.
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| 79 | * @param puValue Where to store the MSR value read.
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| 80 | */
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| 81 | VMM_INT_DECL(int) GIMReadMsr(PVMCPU pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
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| 82 | {
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| 83 | Assert(pVCpu);
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| 84 | PVM pVM = pVCpu->CTX_SUFF(pVM);
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| 85 | Assert(GIMIsEnabled(pVM));
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| 86 | VMCPU_ASSERT_EMT(pVCpu);
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| 87 |
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| 88 | switch (pVM->gim.s.enmProviderId)
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| 89 | {
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| 90 | case GIMPROVIDERID_HYPERV:
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| 91 | return GIMHvReadMsr(pVCpu, idMsr, pRange, puValue);
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| 92 |
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| 93 | default:
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| 94 | AssertMsgFailed(("GIMReadMsr: for unknown provider %u idMsr=%#RX32 -> #GP(0)", pVM->gim.s.enmProviderId, idMsr));
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| 95 | return VERR_CPUM_RAISE_GP_0;
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| 96 | }
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| 97 | }
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| 98 |
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| 99 |
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| 100 | /**
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| 101 | * Invokes the write-MSR handler for the GIM provider configured for the VM.
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| 102 | *
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| 103 | * @returns VBox status code.
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| 104 | * @param pVCpu Pointer to the VMCPU.
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| 105 | * @param idMsr The MSR to write.
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| 106 | * @param pRange The range this MSR belongs to.
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| 107 | * @param uValue The value to set, ignored bits masked.
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| 108 | * @param uRawValue The raw value with the ignored bits not masked.
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| 109 | */
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| 110 | VMM_INT_DECL(int) GIMWriteMsr(PVMCPU pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
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| 111 | {
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| 112 | Assert(pVCpu);
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| 113 | PVM pVM = pVCpu->CTX_SUFF(pVM);
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| 114 | Assert(GIMIsEnabled(pVM));
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| 115 | VMCPU_ASSERT_EMT(pVCpu);
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| 116 |
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| 117 | switch (pVM->gim.s.enmProviderId)
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| 118 | {
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| 119 | case GIMPROVIDERID_HYPERV:
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| 120 | return GIMHvWriteMsr(pVCpu, idMsr, pRange, uValue, uRawValue);
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| 121 |
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| 122 | default:
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| 123 | AssertMsgFailed(("GIMWriteMsr: for unknown provider %u idMsr=%#RX32 -> #GP(0)", pVM->gim.s.enmProviderId, idMsr));
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| 124 | return VERR_CPUM_RAISE_GP_0;
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| 125 | }
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| 126 | }
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| 127 |
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