| 1 | /* $Id: VBoxCpuReportMsrSup.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * MsrSup - SupDrv-specific MSR access.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2013-2023 Oracle and/or its affiliates.
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox base platform packages, as
|
|---|
| 10 | * available from https://www.virtualbox.org.
|
|---|
| 11 | *
|
|---|
| 12 | * This program is free software; you can redistribute it and/or
|
|---|
| 13 | * modify it under the terms of the GNU General Public License
|
|---|
| 14 | * as published by the Free Software Foundation, in version 3 of the
|
|---|
| 15 | * License.
|
|---|
| 16 | *
|
|---|
| 17 | * This program is distributed in the hope that it will be useful, but
|
|---|
| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|---|
| 20 | * General Public License for more details.
|
|---|
| 21 | *
|
|---|
| 22 | * You should have received a copy of the GNU General Public License
|
|---|
| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
|
|---|
| 24 | *
|
|---|
| 25 | * SPDX-License-Identifier: GPL-3.0-only
|
|---|
| 26 | */
|
|---|
| 27 |
|
|---|
| 28 |
|
|---|
| 29 | /*********************************************************************************************************************************
|
|---|
| 30 | * Header Files *
|
|---|
| 31 | *********************************************************************************************************************************/
|
|---|
| 32 | #include "VBoxCpuReport.h"
|
|---|
| 33 | #include <iprt/errcore.h>
|
|---|
| 34 | #include <iprt/x86.h>
|
|---|
| 35 |
|
|---|
| 36 |
|
|---|
| 37 | int VbCpuRepMsrProberInitSupDrv(PVBCPUREPMSRACCESSORS pMsrFunctions)
|
|---|
| 38 | {
|
|---|
| 39 | int rc = SUPR3Init(NULL);
|
|---|
| 40 | if (RT_SUCCESS(rc))
|
|---|
| 41 | {
|
|---|
| 42 | /* Test if the MSR prober is available, since the interface is optional. The TSC MSR will exist on any supported CPU. */
|
|---|
| 43 | uint64_t uValue;
|
|---|
| 44 | bool fGp;
|
|---|
| 45 | rc = SUPR3MsrProberRead(MSR_IA32_TSC, NIL_RTCPUID, &uValue, &fGp);
|
|---|
| 46 | if ( rc != VERR_NOT_IMPLEMENTED
|
|---|
| 47 | && rc != VERR_INVALID_FUNCTION)
|
|---|
| 48 | {
|
|---|
| 49 | pMsrFunctions->fAtomic = true;
|
|---|
| 50 | pMsrFunctions->pfnMsrProberRead = SUPR3MsrProberRead;
|
|---|
| 51 | pMsrFunctions->pfnMsrProberWrite = SUPR3MsrProberWrite;
|
|---|
| 52 | pMsrFunctions->pfnMsrProberModify = SUPR3MsrProberModify;
|
|---|
| 53 |
|
|---|
| 54 | pMsrFunctions->pfnTerm = NULL;
|
|---|
| 55 | return VINF_SUCCESS;
|
|---|
| 56 |
|
|---|
| 57 | }
|
|---|
| 58 | vbCpuRepDebug("warning: MSR probing not supported by the support driver (%Rrc).\n", rc);
|
|---|
| 59 | }
|
|---|
| 60 | else
|
|---|
| 61 | vbCpuRepDebug("warning: Unable to initialize the support library (%Rrc).\n", rc);
|
|---|
| 62 | return rc;
|
|---|
| 63 | }
|
|---|
| 64 |
|
|---|
