| 1 | /* $Id: bs3-locking-1.c 98103 2023-01-17 14:15:46Z vboxsync $ */
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| 2 | /** @file
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| 3 | * BS3Kit - bs3-locking-1, 16-bit C code.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2007-2023 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 |
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| 38 | /*********************************************************************************************************************************
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| 39 | * Header Files *
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| 40 | *********************************************************************************************************************************/
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| 41 | #include <bs3kit.h>
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| 42 | #include <iprt/asm-amd64-x86.h>
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| 43 |
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| 44 | #include <VBox/VMMDevTesting.h>
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| 45 |
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| 46 |
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| 47 | /*********************************************************************************************************************************
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| 48 | * Global Variables *
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| 49 | *********************************************************************************************************************************/
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| 50 | static struct
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| 51 | {
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| 52 | const char * BS3_FAR pszName;
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| 53 | uint32_t cInnerLoops;
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| 54 | uint32_t uCtrlLo;
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| 55 | uint32_t uCtrlHi;
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| 56 | } g_aLockingTests[] =
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| 57 | {
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| 58 | #if 1
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| 59 | # if 1 /* no contention benchmark */
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| 60 | {
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| 61 | "None 0us/inf/0k",
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| 62 | _32K,
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| 63 | 0,
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| 64 | 0,
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| 65 | },
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| 66 | {
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| 67 | "RW None Exl 0us/inf/0k",
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| 68 | _32K,
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| 69 | 0,
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| 70 | 0 | VMMDEV_TESTING_LOCKED_HI_TYPE_RW,
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| 71 | },
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| 72 | # endif
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| 73 | {
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| 74 | "RW None Shr 0us/inf/0k",
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| 75 | _32K,
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| 76 | 0,
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| 77 | 0 | VMMDEV_TESTING_LOCKED_HI_TYPE_RW | VMMDEV_TESTING_LOCKED_HI_EMT_SHARED,
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| 78 | },
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| 79 | # if 1
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| 80 | {
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| 81 | "Contention 500us/250us/64k",
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| 82 | 2000 + 16384,
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| 83 | 500 | (UINT32_C(250) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
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| 84 | 64 | VMMDEV_TESTING_LOCKED_HI_ENABLED,
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| 85 | },
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| 86 | {
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| 87 | "Contention 100us/50us/8k",
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| 88 | 10000 + 4096,
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| 89 | 100 | (UINT32_C(50) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
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| 90 | 8 | VMMDEV_TESTING_LOCKED_HI_ENABLED,
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| 91 | },
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| 92 | {
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| 93 | "Contention 10us/1us/0k",
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| 94 | 16384 + 4096,
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| 95 | 10 | (UINT32_C(1) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
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| 96 | 0 | VMMDEV_TESTING_LOCKED_HI_ENABLED,
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| 97 | },
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| 98 | {
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| 99 | "Contention 500us/250us/64k poke",
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| 100 | 2000 + 16384,
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| 101 | 500 | (UINT32_C(250) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
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| 102 | 64 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_POKE,
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| 103 | },
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| 104 | {
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| 105 | "Contention 100us/50us/1k poke",
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| 106 | 10000 + 4096,
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| 107 | 100 | (UINT32_C(50) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
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| 108 | 1 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_POKE,
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| 109 | },
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| 110 | {
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| 111 | "Contention 500us/250us/64k poke void",
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| 112 | 2000 + 16384,
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| 113 | 500 | (UINT32_C(250) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
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| 114 | 64 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_POKE | VMMDEV_TESTING_LOCKED_HI_BUSY_SUCCESS
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| 115 | },
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| 116 | {
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| 117 | "Contention 50us/25us/8k poke void",
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| 118 | 20000 + 4096,
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| 119 | 50 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
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| 120 | 1 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_POKE | VMMDEV_TESTING_LOCKED_HI_BUSY_SUCCESS
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| 121 | },
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| 122 | # endif
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| 123 | # if 1
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| 124 | {
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| 125 | "RW Contention Exl/Exl 50us/25us/16k",
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| 126 | 20000 + 4096,
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| 127 | 50 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
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| 128 | 16 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_TYPE_RW
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| 129 | },
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| 130 | # endif
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| 131 | {
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| 132 | "RW Contention Shr/Exl 50us/25us/16k",
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| 133 | 20000 + 4096,
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| 134 | 50 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
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| 135 | 16 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_TYPE_RW | VMMDEV_TESTING_LOCKED_HI_THREAD_SHARED
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| 136 | },
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| 137 | # if 1
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| 138 | {
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| 139 | "RW Contention Exl/Exl 50us/25us/16k poke",
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| 140 | 20000 + 4096,
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| 141 | 50 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
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| 142 | 16 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_TYPE_RW | VMMDEV_TESTING_LOCKED_HI_POKE
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| 143 | },
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| 144 | # endif
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| 145 | {
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| 146 | "RW Contention Shr/Exl 50us/25us/16k poke",
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| 147 | 20000 + 4096,
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| 148 | 50 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
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| 149 | 16 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_TYPE_RW | VMMDEV_TESTING_LOCKED_HI_THREAD_SHARED
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| 150 | | VMMDEV_TESTING_LOCKED_HI_POKE | VMMDEV_TESTING_LOCKED_HI_BUSY_SUCCESS
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| 151 | },
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| 152 | # if 1
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| 153 | {
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| 154 | "RW Contention Exl/Exl 50us/25us/16k poke void",
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| 155 | 20000 + 4096,
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| 156 | 50 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
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| 157 | 16 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_TYPE_RW | VMMDEV_TESTING_LOCKED_HI_POKE
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| 158 | },
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| 159 | # endif
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| 160 | {
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| 161 | "RW Contention Shr/Exl 50us/25us/16k poke void",
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| 162 | 20000 + 4096,
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| 163 | 50 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
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| 164 | 16 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_TYPE_RW | VMMDEV_TESTING_LOCKED_HI_THREAD_SHARED
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| 165 | | VMMDEV_TESTING_LOCKED_HI_POKE | VMMDEV_TESTING_LOCKED_HI_BUSY_SUCCESS
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| 166 | },
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| 167 | #endif
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| 168 |
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| 169 | {
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| 170 | "RW Contention Exl/Shr 50us/25us/16k",
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| 171 | 20000 + 4096,
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| 172 | 50 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
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| 173 | 16 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_TYPE_RW | VMMDEV_TESTING_LOCKED_HI_EMT_SHARED
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| 174 | },
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| 175 | {
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| 176 | "RW Contention Exl/Shr poke 250us/25us/16k",
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| 177 | 10000 + 4096,
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| 178 | 250 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
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| 179 | 16 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_TYPE_RW | VMMDEV_TESTING_LOCKED_HI_EMT_SHARED
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| 180 | | VMMDEV_TESTING_LOCKED_HI_POKE
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| 181 | },
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| 182 | {
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| 183 | "RW Contention Exl/Shr poke void 250us/25us/16k",
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| 184 | 10000 + 4096,
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| 185 | 250 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
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| 186 | 16 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_TYPE_RW | VMMDEV_TESTING_LOCKED_HI_EMT_SHARED
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| 187 | | VMMDEV_TESTING_LOCKED_HI_POKE | VMMDEV_TESTING_LOCKED_HI_BUSY_SUCCESS
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| 188 | },
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| 189 | {
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| 190 | "RW None Shr/Shr 50us/25us/16k",
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| 191 | 20000 + 4096,
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| 192 | 50 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
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| 193 | 16 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_TYPE_RW
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| 194 | | VMMDEV_TESTING_LOCKED_HI_THREAD_SHARED | VMMDEV_TESTING_LOCKED_HI_EMT_SHARED
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| 195 | },
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| 196 | };
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| 197 |
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| 198 |
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| 199 | BS3_DECL(void) Main_rm()
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| 200 | {
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| 201 | uint64_t const cNsPerTest = RT_NS_15SEC;
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| 202 | unsigned i;
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| 203 |
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| 204 | Bs3InitAll_rm();
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| 205 | Bs3TestInit("bs3-locking-1");
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| 206 |
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| 207 | /*
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| 208 | * Since this is a host-side test and we don't have raw-mode any more, we
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| 209 | * just stay in raw-mode when doing the test.
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| 210 | */
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| 211 | for (i = 0; i < RT_ELEMENTS(g_aLockingTests); i++)
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| 212 | {
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| 213 | uint64_t const nsStart = Bs3TestNow();
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| 214 | uint64_t cNsElapsed = 0;
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| 215 | uint32_t cTotal = 0;
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| 216 | uint32_t j;
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| 217 |
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| 218 | Bs3TestSub(g_aLockingTests[i].pszName);
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| 219 | ASMOutU32(VMMDEV_TESTING_IOPORT_LOCKED_LO, g_aLockingTests[i].uCtrlLo);
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| 220 | ASMOutU32(VMMDEV_TESTING_IOPORT_LOCKED_HI, g_aLockingTests[i].uCtrlHi);
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| 221 |
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| 222 | for (j = 0; j < _2M && cTotal < _1G; j++)
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| 223 | {
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| 224 |
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| 225 | /* The inner loop should avoid calling Bs3TestNow too often, while not overshooting the . */
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| 226 | unsigned iInner = (unsigned)g_aLockingTests[i].cInnerLoops;
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| 227 | cTotal += iInner;
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| 228 | while (iInner-- > 0)
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| 229 | ASMInU32(VMMDEV_TESTING_IOPORT_LOCKED_LO);
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| 230 |
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| 231 | cNsElapsed = Bs3TestNow() - nsStart;
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| 232 | if (cNsElapsed >= cNsPerTest)
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| 233 | break;
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| 234 | }
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| 235 |
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| 236 | /* Disable locking. */
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| 237 | ASMOutU32(VMMDEV_TESTING_IOPORT_LOCKED_HI, 0);
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| 238 |
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| 239 | Bs3TestValue("Loops", cTotal, VMMDEV_TESTING_UNIT_OCCURRENCES);
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| 240 | Bs3TestValue("Elapsed", cNsElapsed, VMMDEV_TESTING_UNIT_NS);
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| 241 | Bs3TestValue("PerLoop", cNsElapsed / cTotal, VMMDEV_TESTING_UNIT_NS_PER_OCCURRENCE);
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| 242 | }
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| 243 |
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| 244 | Bs3TestTerm();
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| 245 | }
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| 246 |
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