| 1 | /* $Id: IOMAll.cpp 8354 2008-04-24 09:54:53Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IOM - Input / Output Monitor - Any Context.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2007 Sun Microsystems, Inc.
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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 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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| 18 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
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| 19 | * additional information or have any questions.
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| 20 | */
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| 21 |
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| 22 | /*******************************************************************************
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| 23 | * Header Files *
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| 24 | *******************************************************************************/
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| 25 | #define LOG_GROUP LOG_GROUP_IOM
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| 26 | #include <VBox/iom.h>
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| 27 | #include <VBox/mm.h>
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| 28 | #include <VBox/param.h>
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| 29 | #include "IOMInternal.h"
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| 30 | #include <VBox/vm.h>
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| 31 | #include <VBox/selm.h>
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| 32 | #include <VBox/trpm.h>
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| 33 | #include <VBox/pgm.h>
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| 34 | #include <VBox/cpum.h>
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| 35 | #include <VBox/err.h>
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| 36 | #include <VBox/log.h>
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| 37 | #include <iprt/assert.h>
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| 38 |
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| 39 |
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| 40 | /**
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| 41 | * Calculates the size of register parameter.
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| 42 | *
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| 43 | * @returns 1, 2, 4 on success.
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| 44 | * @returns 0 if non-register parameter.
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| 45 | * @param pCpu Pointer to current disassembler context.
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| 46 | * @param pParam Pointer to parameter of instruction to proccess.
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| 47 | */
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| 48 | static unsigned iomGetRegSize(PDISCPUSTATE pCpu, PCOP_PARAMETER pParam)
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| 49 | {
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| 50 | if (pParam->flags & (USE_BASE | USE_INDEX | USE_SCALE | USE_DISPLACEMENT8 | USE_DISPLACEMENT16 | USE_DISPLACEMENT32 | USE_IMMEDIATE8 | USE_IMMEDIATE16 | USE_IMMEDIATE32 | USE_IMMEDIATE16_SX8 | USE_IMMEDIATE32_SX8))
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| 51 | return 0;
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| 52 |
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| 53 | if (pParam->flags & USE_REG_GEN32)
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| 54 | return 4;
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| 55 |
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| 56 | if (pParam->flags & USE_REG_GEN16)
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| 57 | return 2;
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| 58 |
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| 59 | if (pParam->flags & USE_REG_GEN8)
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| 60 | return 1;
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| 61 |
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| 62 | if (pParam->flags & USE_REG_GEN64)
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| 63 | return 8;
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| 64 |
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| 65 | if (pParam->flags & USE_REG_SEG)
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| 66 | return 2;
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| 67 | return 0;
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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 | * Returns the contents of register or immediate data of instruction's parameter.
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| 73 | *
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| 74 | * @returns true on success.
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| 75 | *
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| 76 | * @param pCpu Pointer to current disassembler context.
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| 77 | * @param pParam Pointer to parameter of instruction to proccess.
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| 78 | * @param pRegFrame Pointer to CPUMCTXCORE guest structure.
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| 79 | * @param pu32Data Where to store retrieved data.
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| 80 | * @param pcbSize Where to store the size of data (1, 2, 4).
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| 81 | */
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| 82 | bool iomGetRegImmData(PDISCPUSTATE pCpu, PCOP_PARAMETER pParam, PCPUMCTXCORE pRegFrame, uint32_t *pu32Data, unsigned *pcbSize)
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| 83 | {
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| 84 | if (pParam->flags & (USE_BASE | USE_INDEX | USE_SCALE | USE_DISPLACEMENT8 | USE_DISPLACEMENT16 | USE_DISPLACEMENT32))
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| 85 | {
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| 86 | *pcbSize = 0;
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| 87 | *pu32Data = 0;
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| 88 | return false;
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| 89 | }
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| 90 |
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| 91 | if (pParam->flags & USE_REG_GEN32)
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| 92 | {
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| 93 | *pcbSize = 4;
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| 94 | DISFetchReg32(pRegFrame, pParam->base.reg_gen, pu32Data);
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| 95 | return true;
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| 96 | }
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| 97 |
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| 98 | if (pParam->flags & USE_REG_GEN16)
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| 99 | {
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| 100 | *pcbSize = 2;
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| 101 | DISFetchReg16(pRegFrame, pParam->base.reg_gen, (uint16_t *)pu32Data);
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| 102 | return true;
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| 103 | }
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| 104 |
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| 105 | if (pParam->flags & USE_REG_GEN8)
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| 106 | {
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| 107 | *pcbSize = 1;
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| 108 | DISFetchReg8(pRegFrame, pParam->base.reg_gen, (uint8_t *)pu32Data);
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| 109 | return true;
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| 110 | }
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| 111 |
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| 112 | if (pParam->flags & USE_REG_GEN64)
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| 113 | {
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| 114 | AssertFailed();
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| 115 | *pcbSize = 8;
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| 116 | ///DISFetchReg64(pRegFrame, pParam->base.reg_gen, pu32Data);
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| 117 | return true;
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| 118 | }
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| 119 |
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| 120 | if (pParam->flags & (USE_IMMEDIATE64))
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| 121 | {
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| 122 | AssertFailed();
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| 123 | *pcbSize = 8;
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| 124 | *pu32Data = (uint32_t)pParam->parval;
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| 125 | return true;
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| 126 | }
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| 127 |
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| 128 | if (pParam->flags & (USE_IMMEDIATE32|USE_IMMEDIATE32_SX8))
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| 129 | {
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| 130 | *pcbSize = 4;
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| 131 | *pu32Data = (uint32_t)pParam->parval;
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| 132 | return true;
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| 133 | }
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| 134 |
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| 135 | if (pParam->flags & (USE_IMMEDIATE16|USE_IMMEDIATE16_SX8))
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| 136 | {
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| 137 | *pcbSize = 2;
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| 138 | *pu32Data = (uint16_t)pParam->parval;
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| 139 | return true;
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| 140 | }
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| 141 |
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| 142 | if (pParam->flags & USE_IMMEDIATE8)
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| 143 | {
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| 144 | *pcbSize = 1;
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| 145 | *pu32Data = (uint8_t)pParam->parval;
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| 146 | return true;
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| 147 | }
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| 148 |
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| 149 | if (pParam->flags & USE_REG_SEG)
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| 150 | {
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| 151 | *pcbSize = 2;
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| 152 | DISFetchRegSeg(pRegFrame, pParam->base.reg_seg, (RTSEL *)pu32Data);
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| 153 | return true;
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| 154 | } /* Else - error. */
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| 155 |
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| 156 | AssertFailed();
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| 157 | *pcbSize = 0;
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| 158 | *pu32Data = 0;
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| 159 | return false;
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| 160 | }
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| 161 |
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| 162 |
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| 163 | /**
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| 164 | * Saves data to 8/16/32 general purpose or segment register defined by
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| 165 | * instruction's parameter.
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| 166 | *
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| 167 | * @returns true on success.
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| 168 | * @param pCpu Pointer to current disassembler context.
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| 169 | * @param pParam Pointer to parameter of instruction to proccess.
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| 170 | * @param pRegFrame Pointer to CPUMCTXCORE guest structure.
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| 171 | * @param u32Data 8/16/32 bit data to store.
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| 172 | */
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| 173 | bool iomSaveDataToReg(PDISCPUSTATE pCpu, PCOP_PARAMETER pParam, PCPUMCTXCORE pRegFrame, unsigned u32Data)
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| 174 | {
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| 175 | if (pParam->flags & (USE_BASE | USE_INDEX | USE_SCALE | USE_DISPLACEMENT8 | USE_DISPLACEMENT16 | USE_DISPLACEMENT32 | USE_IMMEDIATE8 | USE_IMMEDIATE16 | USE_IMMEDIATE32 | USE_IMMEDIATE32_SX8 | USE_IMMEDIATE16_SX8))
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| 176 | {
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| 177 | return false;
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| 178 | }
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| 179 |
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| 180 | if (pParam->flags & USE_REG_GEN32)
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| 181 | {
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| 182 | DISWriteReg32(pRegFrame, pParam->base.reg_gen, u32Data);
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| 183 | return true;
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| 184 | }
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| 185 |
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| 186 | if (pParam->flags & USE_REG_GEN16)
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| 187 | {
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| 188 | DISWriteReg16(pRegFrame, pParam->base.reg_gen, (uint16_t)u32Data);
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| 189 | return true;
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| 190 | }
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| 191 |
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| 192 | if (pParam->flags & USE_REG_GEN8)
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| 193 | {
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| 194 | DISWriteReg8(pRegFrame, pParam->base.reg_gen, (uint8_t)u32Data);
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| 195 | return true;
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| 196 | }
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| 197 |
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| 198 | if (pParam->flags & USE_REG_SEG)
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| 199 | {
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| 200 | DISWriteRegSeg(pRegFrame, pParam->base.reg_seg, (RTSEL)u32Data);
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| 201 | return true;
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| 202 | }
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| 203 |
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| 204 | /* Else - error. */
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| 205 | return false;
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| 206 | }
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| 207 |
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| 208 | /*
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| 209 | * Internal - statistics only.
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| 210 | */
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| 211 | DECLINLINE(void) iomMMIOStatLength(PVM pVM, unsigned cb)
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| 212 | {
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| 213 | #ifdef VBOX_WITH_STATISTICS
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| 214 | switch (cb)
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| 215 | {
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| 216 | case 1:
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| 217 | STAM_COUNTER_INC(&pVM->iom.s.StatGCMMIO1Byte);
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| 218 | break;
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| 219 | case 2:
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| 220 | STAM_COUNTER_INC(&pVM->iom.s.StatGCMMIO2Bytes);
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| 221 | break;
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| 222 | case 4:
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| 223 | STAM_COUNTER_INC(&pVM->iom.s.StatGCMMIO4Bytes);
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| 224 | break;
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| 225 | default:
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| 226 | /* No way. */
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| 227 | AssertMsgFailed(("Invalid data length %d\n", cb));
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| 228 | break;
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| 229 | }
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| 230 | #else
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| 231 | NOREF(pVM); NOREF(cb);
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| 232 | #endif
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| 233 | }
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| 234 |
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| 235 |
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| 236 | //#undef LOG_GROUP
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| 237 | //#define LOG_GROUP LOG_GROUP_IOM_IOPORT
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| 238 |
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| 239 | /**
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| 240 | * Reads an I/O port register.
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| 241 | *
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| 242 | * @returns Strict VBox status code. Informational status codes other than the one documented
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| 243 | * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
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| 244 | * @retval VINF_SUCCESS Success.
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| 245 | * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
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| 246 | * status code must be passed on to EM.
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| 247 | * @retval VINF_IOM_HC_IOPORT_READ Defer the read to ring-3. (R0/GC only)
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| 248 | *
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| 249 | * @param pVM VM handle.
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| 250 | * @param Port The port to read.
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| 251 | * @param pu32Value Where to store the value read.
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| 252 | * @param cbValue The size of the register to read in bytes. 1, 2 or 4 bytes.
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| 253 | */
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| 254 | IOMDECL(int) IOMIOPortRead(PVM pVM, RTIOPORT Port, uint32_t *pu32Value, size_t cbValue)
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| 255 | {
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| 256 | #ifdef VBOX_WITH_STATISTICS
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| 257 | /*
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| 258 | * Get the statistics record.
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| 259 | */
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| 260 | PIOMIOPORTSTATS pStats = CTXALLSUFF(pVM->iom.s.pStatsLastRead);
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| 261 | if (!pStats || pStats->Core.Key != Port)
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| 262 | {
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| 263 | pStats = (PIOMIOPORTSTATS)RTAvloIOPortGet(&pVM->iom.s.CTXSUFF(pTrees)->IOPortStatTree, Port);
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| 264 | if (pStats)
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| 265 | CTXALLSUFF(pVM->iom.s.pStatsLastRead) = pStats;
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| 266 | }
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| 267 | #endif
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| 268 |
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| 269 | /*
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| 270 | * Get handler for current context.
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| 271 | */
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| 272 | CTXALLSUFF(PIOMIOPORTRANGE) pRange = CTXALLSUFF(pVM->iom.s.pRangeLastRead);
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| 273 | if ( !pRange
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| 274 | || (unsigned)Port - (unsigned)pRange->Port >= (unsigned)pRange->cPorts)
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| 275 | {
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| 276 | pRange = iomIOPortGetRange(&pVM->iom.s, Port);
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| 277 | if (pRange)
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| 278 | CTXALLSUFF(pVM->iom.s.pRangeLastRead) = pRange;
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| 279 | }
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| 280 | #ifdef IN_GC
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| 281 | Assert(!pRange || MMHyperIsInsideArea(pVM, pRange)); /** @todo r=bird: there is a macro for this which skips the #if'ing. */
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| 282 | #endif
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| 283 |
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| 284 | if (pRange)
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| 285 | {
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| 286 | /*
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| 287 | * Found a range.
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| 288 | */
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| 289 | #ifndef IN_RING3
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| 290 | if (!pRange->pfnInCallback)
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| 291 | {
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| 292 | # ifdef VBOX_WITH_STATISTICS
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| 293 | if (pStats)
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| 294 | STAM_COUNTER_INC(&pStats->CTXALLMID(In,ToR3));
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| 295 | # endif
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| 296 | return VINF_IOM_HC_IOPORT_READ;
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| 297 | }
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| 298 | #endif
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| 299 | /* call the device. */
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| 300 | #ifdef VBOX_WITH_STATISTICS
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| 301 | if (pStats)
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| 302 | STAM_PROFILE_ADV_START(&pStats->CTXALLSUFF(ProfIn), a);
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| 303 | #endif
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| 304 | int rc = pRange->pfnInCallback(pRange->pDevIns, pRange->pvUser, Port, pu32Value, cbValue);
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| 305 | #ifdef VBOX_WITH_STATISTICS
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| 306 | if (pStats)
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| 307 | STAM_PROFILE_ADV_STOP(&pStats->CTXALLSUFF(ProfIn), a);
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| 308 | if (rc == VINF_SUCCESS && pStats)
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| 309 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(In));
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| 310 | # ifndef IN_RING3
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| 311 | else if (rc == VINF_IOM_HC_IOPORT_READ && pStats)
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| 312 | STAM_COUNTER_INC(&pStats->CTXALLMID(In,ToR3));
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| 313 | # endif
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| 314 | #endif
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| 315 | if (rc == VERR_IOM_IOPORT_UNUSED)
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| 316 | {
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| 317 | /* make return value */
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| 318 | rc = VINF_SUCCESS;
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| 319 | switch (cbValue)
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| 320 | {
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| 321 | case 1: *(uint8_t *)pu32Value = 0xff; break;
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| 322 | case 2: *(uint16_t *)pu32Value = 0xffff; break;
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| 323 | case 4: *(uint32_t *)pu32Value = 0xffffffff; break;
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| 324 | default:
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| 325 | AssertMsgFailed(("Invalid I/O port size %d. Port=%d\n", cbValue, Port));
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| 326 | return VERR_IOM_INVALID_IOPORT_SIZE;
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| 327 | }
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| 328 | }
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| 329 | Log3(("IOMIOPortRead: Port=%RTiop *pu32=%08RX32 cb=%d rc=%Vrc\n", Port, *pu32Value, cbValue, rc));
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| 330 | return rc;
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| 331 | }
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| 332 |
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| 333 | #ifndef IN_RING3
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| 334 | /*
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| 335 | * Handler in ring-3?
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| 336 | */
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| 337 | PIOMIOPORTRANGER3 pRangeR3 = iomIOPortGetRangeHC(&pVM->iom.s, Port);
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| 338 | if (pRangeR3)
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| 339 | {
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| 340 | # ifdef VBOX_WITH_STATISTICS
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| 341 | if (pStats)
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| 342 | STAM_COUNTER_INC(&pStats->CTXALLMID(In,ToR3));
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| 343 | # endif
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| 344 | return VINF_IOM_HC_IOPORT_READ;
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| 345 | }
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| 346 | #endif
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| 347 |
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| 348 | /*
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| 349 | * Ok, no handler for this port.
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| 350 | */
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| 351 | #ifdef VBOX_WITH_STATISTICS
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| 352 | if (pStats)
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| 353 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(In));
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| 354 | else
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| 355 | {
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| 356 | # ifndef IN_RING3
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| 357 | /* Ring-3 will have to create the statistics record. */
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| 358 | return VINF_IOM_HC_IOPORT_READ;
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| 359 | # else
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| 360 | pStats = iomr3IOPortStatsCreate(pVM, Port, NULL);
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| 361 | if (pStats)
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| 362 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(In));
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| 363 | # endif
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| 364 | }
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| 365 | #endif
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| 366 |
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| 367 | /* make return value */
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| 368 | switch (cbValue)
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| 369 | {
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| 370 | case 1: *(uint8_t *)pu32Value = 0xff; break;
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| 371 | case 2: *(uint16_t *)pu32Value = 0xffff; break;
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| 372 | case 4: *(uint32_t *)pu32Value = 0xffffffff; break;
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| 373 | default:
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| 374 | AssertMsgFailed(("Invalid I/O port size %d. Port=%d\n", cbValue, Port));
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| 375 | return VERR_IOM_INVALID_IOPORT_SIZE;
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| 376 | }
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| 377 | Log3(("IOMIOPortRead: Port=%RTiop *pu32=%08RX32 cb=%d rc=VINF_SUCCESS\n", Port, *pu32Value, cbValue));
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| 378 | return VINF_SUCCESS;
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| 379 | }
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| 380 |
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| 381 |
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| 382 | /**
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| 383 | * Reads the string buffer of an I/O port register.
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| 384 | *
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| 385 | * @returns Strict VBox status code. Informational status codes other than the one documented
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| 386 | * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
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| 387 | * @retval VINF_SUCCESS Success.
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| 388 | * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
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| 389 | * status code must be passed on to EM.
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|---|
| 390 | * @retval VINF_IOM_HC_IOPORT_READ Defer the read to ring-3. (R0/GC only)
|
|---|
| 391 | *
|
|---|
| 392 | * @param pVM VM handle.
|
|---|
| 393 | * @param Port The port to read.
|
|---|
| 394 | * @param pGCPtrDst Pointer to the destination buffer (GC, incremented appropriately).
|
|---|
| 395 | * @param pcTransfers Pointer to the number of transfer units to read, on return remaining transfer units.
|
|---|
| 396 | * @param cb Size of the transfer unit (1, 2 or 4 bytes).
|
|---|
| 397 | * */
|
|---|
| 398 | IOMDECL(int) IOMIOPortReadString(PVM pVM, RTIOPORT Port, PRTGCPTR pGCPtrDst, PRTGCUINTREG pcTransfers, unsigned cb)
|
|---|
| 399 | {
|
|---|
| 400 | #ifdef LOG_ENABLED
|
|---|
| 401 | const RTGCUINTREG cTransfers = *pcTransfers;
|
|---|
| 402 | #endif
|
|---|
| 403 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 404 | /*
|
|---|
| 405 | * Get the statistics record.
|
|---|
| 406 | */
|
|---|
| 407 | PIOMIOPORTSTATS pStats = CTXALLSUFF(pVM->iom.s.pStatsLastRead);
|
|---|
| 408 | if (!pStats || pStats->Core.Key != Port)
|
|---|
| 409 | {
|
|---|
| 410 | pStats = (PIOMIOPORTSTATS)RTAvloIOPortGet(&pVM->iom.s.CTXSUFF(pTrees)->IOPortStatTree, Port);
|
|---|
| 411 | if (pStats)
|
|---|
| 412 | CTXALLSUFF(pVM->iom.s.pStatsLastRead) = pStats;
|
|---|
| 413 | }
|
|---|
| 414 | #endif
|
|---|
| 415 |
|
|---|
| 416 | /*
|
|---|
| 417 | * Get handler for current context.
|
|---|
| 418 | */
|
|---|
| 419 | CTXALLSUFF(PIOMIOPORTRANGE) pRange = CTXALLSUFF(pVM->iom.s.pRangeLastRead);
|
|---|
| 420 | if ( !pRange
|
|---|
| 421 | || (unsigned)Port - (unsigned)pRange->Port >= (unsigned)pRange->cPorts)
|
|---|
| 422 | {
|
|---|
| 423 | pRange = iomIOPortGetRange(&pVM->iom.s, Port);
|
|---|
| 424 | if (pRange)
|
|---|
| 425 | CTXALLSUFF(pVM->iom.s.pRangeLastRead) = pRange;
|
|---|
| 426 | }
|
|---|
| 427 | #ifdef IN_GC
|
|---|
| 428 | Assert(!pRange || MMHyperIsInsideArea(pVM, pRange)); /** @todo r=bird: there is a macro for this which skips the #if'ing. */
|
|---|
| 429 | #endif
|
|---|
| 430 |
|
|---|
| 431 | if (pRange)
|
|---|
| 432 | {
|
|---|
| 433 | /*
|
|---|
| 434 | * Found a range.
|
|---|
| 435 | */
|
|---|
| 436 | #ifndef IN_RING3
|
|---|
| 437 | if (!pRange->pfnInStrCallback)
|
|---|
| 438 | {
|
|---|
| 439 | # ifdef VBOX_WITH_STATISTICS
|
|---|
| 440 | if (pStats)
|
|---|
| 441 | STAM_COUNTER_INC(&pStats->CTXALLMID(In,ToR3));
|
|---|
| 442 | # endif
|
|---|
| 443 | return VINF_IOM_HC_IOPORT_READ;
|
|---|
| 444 | }
|
|---|
| 445 | #endif
|
|---|
| 446 | /* call the device. */
|
|---|
| 447 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 448 | if (pStats)
|
|---|
| 449 | STAM_PROFILE_ADV_START(&pStats->CTXALLSUFF(ProfIn), a);
|
|---|
| 450 | #endif
|
|---|
| 451 |
|
|---|
| 452 | int rc = pRange->pfnInStrCallback(pRange->pDevIns, pRange->pvUser, Port, pGCPtrDst, pcTransfers, cb);
|
|---|
| 453 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 454 | if (pStats)
|
|---|
| 455 | STAM_PROFILE_ADV_STOP(&pStats->CTXALLSUFF(ProfIn), a);
|
|---|
| 456 | if (rc == VINF_SUCCESS && pStats)
|
|---|
| 457 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(In));
|
|---|
| 458 | # ifndef IN_RING3
|
|---|
| 459 | else if (rc == VINF_IOM_HC_IOPORT_READ && pStats)
|
|---|
| 460 | STAM_COUNTER_INC(&pStats->CTXALLMID(In, ToR3));
|
|---|
| 461 | # endif
|
|---|
| 462 | #endif
|
|---|
| 463 | Log3(("IOMIOPortReadStr: Port=%RTiop pGCPtrDst=%p pcTransfer=%p:{%#x->%#x} cb=%d rc=%Vrc\n",
|
|---|
| 464 | Port, pGCPtrDst, pcTransfers, cTransfers, *pcTransfers, cb, rc));
|
|---|
| 465 | return rc;
|
|---|
| 466 | }
|
|---|
| 467 |
|
|---|
| 468 | #ifndef IN_RING3
|
|---|
| 469 | /*
|
|---|
| 470 | * Handler in ring-3?
|
|---|
| 471 | */
|
|---|
| 472 | PIOMIOPORTRANGER3 pRangeR3 = iomIOPortGetRangeHC(&pVM->iom.s, Port);
|
|---|
| 473 | if (pRangeR3)
|
|---|
| 474 | {
|
|---|
| 475 | # ifdef VBOX_WITH_STATISTICS
|
|---|
| 476 | if (pStats)
|
|---|
| 477 | STAM_COUNTER_INC(&pStats->CTXALLMID(In,ToR3));
|
|---|
| 478 | # endif
|
|---|
| 479 | return VINF_IOM_HC_IOPORT_READ;
|
|---|
| 480 | }
|
|---|
| 481 | #endif
|
|---|
| 482 |
|
|---|
| 483 | /*
|
|---|
| 484 | * Ok, no handler for this port.
|
|---|
| 485 | */
|
|---|
| 486 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 487 | if (pStats)
|
|---|
| 488 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(In));
|
|---|
| 489 | else
|
|---|
| 490 | {
|
|---|
| 491 | # ifndef IN_RING3
|
|---|
| 492 | /* Ring-3 will have to create the statistics record. */
|
|---|
| 493 | return VINF_IOM_HC_IOPORT_READ;
|
|---|
| 494 | # else
|
|---|
| 495 | pStats = iomr3IOPortStatsCreate(pVM, Port, NULL);
|
|---|
| 496 | if (pStats)
|
|---|
| 497 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(In));
|
|---|
| 498 | # endif
|
|---|
| 499 | }
|
|---|
| 500 | #endif
|
|---|
| 501 |
|
|---|
| 502 | Log3(("IOMIOPortReadStr: Port=%RTiop pGCPtrDst=%p pcTransfer=%p:{%#x->%#x} cb=%d rc=VINF_SUCCESS\n",
|
|---|
| 503 | Port, pGCPtrDst, pcTransfers, cTransfers, *pcTransfers, cb));
|
|---|
| 504 | return VINF_SUCCESS;
|
|---|
| 505 | }
|
|---|
| 506 |
|
|---|
| 507 |
|
|---|
| 508 | /**
|
|---|
| 509 | * Writes to an I/O port register.
|
|---|
| 510 | *
|
|---|
| 511 | * @returns Strict VBox status code. Informational status codes other than the one documented
|
|---|
| 512 | * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
|
|---|
| 513 | * @retval VINF_SUCCESS Success.
|
|---|
| 514 | * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
|
|---|
| 515 | * status code must be passed on to EM.
|
|---|
| 516 | * @retval VINF_IOM_HC_IOPORT_WRITE Defer the write to ring-3. (R0/GC only)
|
|---|
| 517 | *
|
|---|
| 518 | * @param pVM VM handle.
|
|---|
| 519 | * @param Port The port to write to.
|
|---|
| 520 | * @param u32Value The value to write.
|
|---|
| 521 | * @param cbValue The size of the register to read in bytes. 1, 2 or 4 bytes.
|
|---|
| 522 | */
|
|---|
| 523 | IOMDECL(int) IOMIOPortWrite(PVM pVM, RTIOPORT Port, uint32_t u32Value, size_t cbValue)
|
|---|
| 524 | {
|
|---|
| 525 | /** @todo bird: When I get time, I'll remove the GC tree and link the GC entries to the ring-3 node. */
|
|---|
| 526 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 527 | /*
|
|---|
| 528 | * Find the statistics record.
|
|---|
| 529 | */
|
|---|
| 530 | PIOMIOPORTSTATS pStats = CTXALLSUFF(pVM->iom.s.pStatsLastWrite);
|
|---|
| 531 | if (!pStats || pStats->Core.Key != Port)
|
|---|
| 532 | {
|
|---|
| 533 | pStats = (PIOMIOPORTSTATS)RTAvloIOPortGet(&pVM->iom.s.CTXSUFF(pTrees)->IOPortStatTree, Port);
|
|---|
| 534 | if (pStats)
|
|---|
| 535 | CTXALLSUFF(pVM->iom.s.pStatsLastWrite) = pStats;
|
|---|
| 536 | }
|
|---|
| 537 | #endif
|
|---|
| 538 |
|
|---|
| 539 | /*
|
|---|
| 540 | * Get handler for current context.
|
|---|
| 541 | */
|
|---|
| 542 | CTXALLSUFF(PIOMIOPORTRANGE) pRange = CTXALLSUFF(pVM->iom.s.pRangeLastWrite);
|
|---|
| 543 | if ( !pRange
|
|---|
| 544 | || (unsigned)Port - (unsigned)pRange->Port >= (unsigned)pRange->cPorts)
|
|---|
| 545 | {
|
|---|
| 546 | pRange = iomIOPortGetRange(&pVM->iom.s, Port);
|
|---|
| 547 | if (pRange)
|
|---|
| 548 | CTXALLSUFF(pVM->iom.s.pRangeLastWrite) = pRange;
|
|---|
| 549 | }
|
|---|
| 550 | #ifdef IN_GC
|
|---|
| 551 | Assert(!pRange || MMHyperIsInsideArea(pVM, pRange));
|
|---|
| 552 | #endif
|
|---|
| 553 |
|
|---|
| 554 | if (pRange)
|
|---|
| 555 | {
|
|---|
| 556 | /*
|
|---|
| 557 | * Found a range.
|
|---|
| 558 | */
|
|---|
| 559 | #ifndef IN_RING3
|
|---|
| 560 | if (!pRange->pfnOutCallback)
|
|---|
| 561 | {
|
|---|
| 562 | # ifdef VBOX_WITH_STATISTICS
|
|---|
| 563 | if (pStats)
|
|---|
| 564 | STAM_COUNTER_INC(&pStats->CTXALLMID(Out,ToR3));
|
|---|
| 565 | # endif
|
|---|
| 566 | return VINF_IOM_HC_IOPORT_WRITE;
|
|---|
| 567 | }
|
|---|
| 568 | #endif
|
|---|
| 569 | /* call the device. */
|
|---|
| 570 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 571 | if (pStats)
|
|---|
| 572 | STAM_PROFILE_ADV_START(&pStats->CTXALLSUFF(ProfOut), a);
|
|---|
| 573 | #endif
|
|---|
| 574 | int rc = pRange->pfnOutCallback(pRange->pDevIns, pRange->pvUser, Port, u32Value, cbValue);
|
|---|
| 575 |
|
|---|
| 576 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 577 | if (pStats)
|
|---|
| 578 | STAM_PROFILE_ADV_STOP(&pStats->CTXALLSUFF(ProfOut), a);
|
|---|
| 579 | if (rc == VINF_SUCCESS && pStats)
|
|---|
| 580 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out));
|
|---|
| 581 | # ifndef IN_RING3
|
|---|
| 582 | else if (rc == VINF_IOM_HC_IOPORT_WRITE && pStats)
|
|---|
| 583 | STAM_COUNTER_INC(&pStats->CTXALLMID(Out, ToR3));
|
|---|
| 584 | # endif
|
|---|
| 585 | #endif
|
|---|
| 586 | Log3(("IOMIOPortWrite: Port=%RTiop u32=%08RX32 cb=%d rc=%Vrc\n", Port, u32Value, cbValue, rc));
|
|---|
| 587 | return rc;
|
|---|
| 588 | }
|
|---|
| 589 |
|
|---|
| 590 | #ifndef IN_RING3
|
|---|
| 591 | /*
|
|---|
| 592 | * Handler in ring-3?
|
|---|
| 593 | */
|
|---|
| 594 | PIOMIOPORTRANGER3 pRangeR3 = iomIOPortGetRangeHC(&pVM->iom.s, Port);
|
|---|
| 595 | if (pRangeR3)
|
|---|
| 596 | {
|
|---|
| 597 | # ifdef VBOX_WITH_STATISTICS
|
|---|
| 598 | if (pStats)
|
|---|
| 599 | STAM_COUNTER_INC(&pStats->CTXALLMID(Out,ToR3));
|
|---|
| 600 | # endif
|
|---|
| 601 | return VINF_IOM_HC_IOPORT_WRITE;
|
|---|
| 602 | }
|
|---|
| 603 | #endif
|
|---|
| 604 |
|
|---|
| 605 | /*
|
|---|
| 606 | * Ok, no handler for that port.
|
|---|
| 607 | */
|
|---|
| 608 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 609 | /* statistics. */
|
|---|
| 610 | if (pStats)
|
|---|
| 611 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out));
|
|---|
| 612 | else
|
|---|
| 613 | {
|
|---|
| 614 | # ifndef IN_RING3
|
|---|
| 615 | /* R3 will have to create the statistics record. */
|
|---|
| 616 | return VINF_IOM_HC_IOPORT_WRITE;
|
|---|
| 617 | # else
|
|---|
| 618 | pStats = iomr3IOPortStatsCreate(pVM, Port, NULL);
|
|---|
| 619 | if (pStats)
|
|---|
| 620 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out));
|
|---|
| 621 | # endif
|
|---|
| 622 | }
|
|---|
| 623 | #endif
|
|---|
| 624 | Log3(("IOMIOPortWrite: Port=%RTiop u32=%08RX32 cb=%d nop\n", Port, u32Value, cbValue));
|
|---|
| 625 | return VINF_SUCCESS;
|
|---|
| 626 | }
|
|---|
| 627 |
|
|---|
| 628 |
|
|---|
| 629 | /**
|
|---|
| 630 | * Writes the string buffer of an I/O port register.
|
|---|
| 631 | *
|
|---|
| 632 | * @returns Strict VBox status code. Informational status codes other than the one documented
|
|---|
| 633 | * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
|
|---|
| 634 | * @retval VINF_SUCCESS Success.
|
|---|
| 635 | * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
|
|---|
| 636 | * status code must be passed on to EM.
|
|---|
| 637 | * @retval VINF_IOM_HC_IOPORT_WRITE Defer the write to ring-3. (R0/GC only)
|
|---|
| 638 | *
|
|---|
| 639 | * @param pVM VM handle.
|
|---|
| 640 | * @param Port The port to write.
|
|---|
| 641 | * @param pGCPtrSrc Pointer to the source buffer (GC, incremented appropriately).
|
|---|
| 642 | * @param pcTransfers Pointer to the number of transfer units to write, on return remaining transfer units.
|
|---|
| 643 | * @param cb Size of the transfer unit (1, 2 or 4 bytes).
|
|---|
| 644 | * */
|
|---|
| 645 | IOMDECL(int) IOMIOPortWriteString(PVM pVM, RTIOPORT Port, PRTGCPTR pGCPtrSrc, PRTGCUINTREG pcTransfers, unsigned cb)
|
|---|
| 646 | {
|
|---|
| 647 | #ifdef LOG_ENABLED
|
|---|
| 648 | const RTGCUINTREG cTransfers = *pcTransfers;
|
|---|
| 649 | #endif
|
|---|
| 650 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 651 | /*
|
|---|
| 652 | * Get the statistics record.
|
|---|
| 653 | */
|
|---|
| 654 | PIOMIOPORTSTATS pStats = CTXALLSUFF(pVM->iom.s.pStatsLastWrite);
|
|---|
| 655 | if (!pStats || pStats->Core.Key != Port)
|
|---|
| 656 | {
|
|---|
| 657 | pStats = (PIOMIOPORTSTATS)RTAvloIOPortGet(&pVM->iom.s.CTXSUFF(pTrees)->IOPortStatTree, Port);
|
|---|
| 658 | if (pStats)
|
|---|
| 659 | CTXALLSUFF(pVM->iom.s.pStatsLastWrite) = pStats;
|
|---|
| 660 | }
|
|---|
| 661 | #endif
|
|---|
| 662 |
|
|---|
| 663 | /*
|
|---|
| 664 | * Get handler for current context.
|
|---|
| 665 | */
|
|---|
| 666 | CTXALLSUFF(PIOMIOPORTRANGE) pRange = CTXALLSUFF(pVM->iom.s.pRangeLastWrite);
|
|---|
| 667 | if ( !pRange
|
|---|
| 668 | || (unsigned)Port - (unsigned)pRange->Port >= (unsigned)pRange->cPorts)
|
|---|
| 669 | {
|
|---|
| 670 | pRange = iomIOPortGetRange(&pVM->iom.s, Port);
|
|---|
| 671 | if (pRange)
|
|---|
| 672 | CTXALLSUFF(pVM->iom.s.pRangeLastWrite) = pRange;
|
|---|
| 673 | }
|
|---|
| 674 | #ifdef IN_GC
|
|---|
| 675 | Assert(!pRange || MMHyperIsInsideArea(pVM, pRange)); /** @todo r=bird: there is a macro for this which skips the #if'ing. */
|
|---|
| 676 | #endif
|
|---|
| 677 |
|
|---|
| 678 | if (pRange)
|
|---|
| 679 | {
|
|---|
| 680 | /*
|
|---|
| 681 | * Found a range.
|
|---|
| 682 | */
|
|---|
| 683 | #ifndef IN_RING3
|
|---|
| 684 | if (!pRange->pfnOutStrCallback)
|
|---|
| 685 | {
|
|---|
| 686 | # ifdef VBOX_WITH_STATISTICS
|
|---|
| 687 | if (pStats)
|
|---|
| 688 | STAM_COUNTER_INC(&pStats->CTXALLMID(Out,ToR3));
|
|---|
| 689 | # endif
|
|---|
| 690 | return VINF_IOM_HC_IOPORT_WRITE;
|
|---|
| 691 | }
|
|---|
| 692 | #endif
|
|---|
| 693 | /* call the device. */
|
|---|
| 694 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 695 | if (pStats)
|
|---|
| 696 | STAM_PROFILE_ADV_START(&pStats->CTXALLSUFF(ProfOut), a);
|
|---|
| 697 | #endif
|
|---|
| 698 | int rc = pRange->pfnOutStrCallback(pRange->pDevIns, pRange->pvUser, Port, pGCPtrSrc, pcTransfers, cb);
|
|---|
| 699 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 700 | if (pStats)
|
|---|
| 701 | STAM_PROFILE_ADV_STOP(&pStats->CTXALLSUFF(ProfOut), a);
|
|---|
| 702 | if (rc == VINF_SUCCESS && pStats)
|
|---|
| 703 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out));
|
|---|
| 704 | # ifndef IN_RING3
|
|---|
| 705 | else if (rc == VINF_IOM_HC_IOPORT_WRITE && pStats)
|
|---|
| 706 | STAM_COUNTER_INC(&pStats->CTXALLMID(Out, ToR3));
|
|---|
| 707 | # endif
|
|---|
| 708 | #endif
|
|---|
| 709 | Log3(("IOMIOPortWriteStr: Port=%RTiop pGCPtrSrc=%p pcTransfer=%p:{%#x->%#x} cb=%d rc=%Vrc\n",
|
|---|
| 710 | Port, pGCPtrSrc, pcTransfers, cTransfers, *pcTransfers, cb, rc));
|
|---|
| 711 | return rc;
|
|---|
| 712 | }
|
|---|
| 713 |
|
|---|
| 714 | #ifndef IN_RING3
|
|---|
| 715 | /*
|
|---|
| 716 | * Handler in ring-3?
|
|---|
| 717 | */
|
|---|
| 718 | PIOMIOPORTRANGER3 pRangeR3 = iomIOPortGetRangeHC(&pVM->iom.s, Port);
|
|---|
| 719 | if (pRangeR3)
|
|---|
| 720 | {
|
|---|
| 721 | # ifdef VBOX_WITH_STATISTICS
|
|---|
| 722 | if (pStats)
|
|---|
| 723 | STAM_COUNTER_INC(&pStats->CTXALLMID(Out,ToR3));
|
|---|
| 724 | # endif
|
|---|
| 725 | return VINF_IOM_HC_IOPORT_WRITE;
|
|---|
| 726 | }
|
|---|
| 727 | #endif
|
|---|
| 728 |
|
|---|
| 729 | /*
|
|---|
| 730 | * Ok, no handler for this port.
|
|---|
| 731 | */
|
|---|
| 732 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 733 | if (pStats)
|
|---|
| 734 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out));
|
|---|
| 735 | else
|
|---|
| 736 | {
|
|---|
| 737 | # ifndef IN_RING3
|
|---|
| 738 | /* Ring-3 will have to create the statistics record. */
|
|---|
| 739 | return VINF_IOM_HC_IOPORT_WRITE;
|
|---|
| 740 | # else
|
|---|
| 741 | pStats = iomr3IOPortStatsCreate(pVM, Port, NULL);
|
|---|
| 742 | if (pStats)
|
|---|
| 743 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out));
|
|---|
| 744 | # endif
|
|---|
| 745 | }
|
|---|
| 746 | #endif
|
|---|
| 747 |
|
|---|
| 748 | Log3(("IOMIOPortWriteStr: Port=%RTiop pGCPtrSrc=%p pcTransfer=%p:{%#x->%#x} cb=%d rc=VINF_SUCCESS\n",
|
|---|
| 749 | Port, pGCPtrSrc, pcTransfers, cTransfers, *pcTransfers, cb));
|
|---|
| 750 | return VINF_SUCCESS;
|
|---|
| 751 | }
|
|---|
| 752 |
|
|---|
| 753 |
|
|---|
| 754 | /**
|
|---|
| 755 | * Checks that the operation is allowed according to the IOPL
|
|---|
| 756 | * level and I/O bitmap.
|
|---|
| 757 | *
|
|---|
| 758 | * @returns Strict VBox status code. Informational status codes other than the one documented
|
|---|
| 759 | * here are to be treated as internal failure.
|
|---|
| 760 | * @retval VINF_SUCCESS Success.
|
|---|
| 761 | * @retval VINF_EM_RAW_GUEST_TRAP The exception was left pending. (TRPMRaiseXcptErr)
|
|---|
| 762 | * @retval VINF_TRPM_XCPT_DISPATCHED The exception was raised and dispatched for raw-mode execution. (TRPMRaiseXcptErr)
|
|---|
| 763 | * @retval VINF_EM_RESCHEDULE_REM The exception was dispatched and cannot be executed in raw-mode. (TRPMRaiseXcptErr)
|
|---|
| 764 | *
|
|---|
| 765 | * @param pVM VM handle.
|
|---|
| 766 | * @param pCtxCore Pointer to register frame.
|
|---|
| 767 | * @param Port The I/O port number.
|
|---|
| 768 | * @param cb The access size.
|
|---|
| 769 | */
|
|---|
| 770 | IOMDECL(int) IOMInterpretCheckPortIOAccess(PVM pVM, PCPUMCTXCORE pCtxCore, RTIOPORT Port, unsigned cb)
|
|---|
| 771 | {
|
|---|
| 772 | /*
|
|---|
| 773 | * If this isn't ring-0, we have to check for I/O privileges.
|
|---|
| 774 | */
|
|---|
| 775 | uint32_t efl = CPUMRawGetEFlags(pVM, pCtxCore);
|
|---|
| 776 | uint32_t cpl = CPUMGetGuestCPL(pVM, pCtxCore);
|
|---|
| 777 |
|
|---|
| 778 | if ( ( cpl > 0
|
|---|
| 779 | && X86_EFL_GET_IOPL(efl) < cpl)
|
|---|
| 780 | || pCtxCore->eflags.Bits.u1VM /* IOPL is ignored in V86 mode; always check TSS bitmap */
|
|---|
| 781 | )
|
|---|
| 782 | {
|
|---|
| 783 | /*
|
|---|
| 784 | * Get TSS location and check if there can be a I/O bitmap.
|
|---|
| 785 | */
|
|---|
| 786 | RTGCUINTPTR GCPtrTss;
|
|---|
| 787 | RTGCUINTPTR cbTss;
|
|---|
| 788 | bool fCanHaveIOBitmap;
|
|---|
| 789 | int rc = SELMGetTSSInfo(pVM, &GCPtrTss, &cbTss, &fCanHaveIOBitmap);
|
|---|
| 790 | if (VBOX_FAILURE(rc))
|
|---|
| 791 | {
|
|---|
| 792 | Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d %Vrc -> #GP(0)\n", Port, cb, rc));
|
|---|
| 793 | return TRPMRaiseXcptErr(pVM, pCtxCore, X86_XCPT_GP, 0);
|
|---|
| 794 | }
|
|---|
| 795 |
|
|---|
| 796 | if ( !fCanHaveIOBitmap
|
|---|
| 797 | || cbTss <= sizeof(VBOXTSS))
|
|---|
| 798 | {
|
|---|
| 799 | Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d cbTss=%#x fCanHaveIOBitmap=%RTbool -> #GP(0)\n",
|
|---|
| 800 | Port, cb, cbTss, fCanHaveIOBitmap));
|
|---|
| 801 | return TRPMRaiseXcptErr(pVM, pCtxCore, X86_XCPT_GP, 0);
|
|---|
| 802 | }
|
|---|
| 803 |
|
|---|
| 804 | /*
|
|---|
| 805 | * Fetch the I/O bitmap offset.
|
|---|
| 806 | */
|
|---|
| 807 | uint16_t offIOPB;
|
|---|
| 808 | rc = PGMPhysInterpretedRead(pVM, pCtxCore, &offIOPB, GCPtrTss + RT_OFFSETOF(VBOXTSS, offIoBitmap), sizeof(offIOPB));
|
|---|
| 809 | if (rc != VINF_SUCCESS)
|
|---|
| 810 | {
|
|---|
| 811 | Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d GCPtrTss=%VGv %Vrc\n",
|
|---|
| 812 | Port, cb, GCPtrTss, rc));
|
|---|
| 813 | return rc;
|
|---|
| 814 | }
|
|---|
| 815 |
|
|---|
| 816 | /*
|
|---|
| 817 | * Check the limit and read the two bitmap bytes.
|
|---|
| 818 | */
|
|---|
| 819 | uint32_t offTss = offIOPB + (Port >> 3);
|
|---|
| 820 | if (offTss + 1 >= cbTss)
|
|---|
| 821 | {
|
|---|
| 822 | Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d offTss=%#x cbTss=%#x -> #GP(0)\n",
|
|---|
| 823 | Port, cb, offTss, cbTss));
|
|---|
| 824 | return TRPMRaiseXcptErr(pVM, pCtxCore, X86_XCPT_GP, 0);
|
|---|
| 825 | }
|
|---|
| 826 | uint16_t u16;
|
|---|
| 827 | rc = PGMPhysInterpretedRead(pVM, pCtxCore, &u16, GCPtrTss + offTss, sizeof(u16));
|
|---|
| 828 | if (rc != VINF_SUCCESS)
|
|---|
| 829 | {
|
|---|
| 830 | Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d GCPtrTss=%VGv offTss=%#x -> %Vrc\n",
|
|---|
| 831 | Port, cb, GCPtrTss, offTss, rc));
|
|---|
| 832 | return rc;
|
|---|
| 833 | }
|
|---|
| 834 |
|
|---|
| 835 | /*
|
|---|
| 836 | * All the bits must be clear.
|
|---|
| 837 | */
|
|---|
| 838 | if ((u16 >> (Port & 7)) & ((1 << cb) - 1))
|
|---|
| 839 | {
|
|---|
| 840 | Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d u16=%#x -> #GP(0)\n",
|
|---|
| 841 | Port, cb, u16, offTss));
|
|---|
| 842 | return TRPMRaiseXcptErr(pVM, pCtxCore, X86_XCPT_GP, 0);
|
|---|
| 843 | }
|
|---|
| 844 | LogFlow(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d offTss=%#x cbTss=%#x u16=%#x -> OK\n",
|
|---|
| 845 | Port, cb, u16, offTss, cbTss));
|
|---|
| 846 | }
|
|---|
| 847 | return VINF_SUCCESS;
|
|---|
| 848 | }
|
|---|
| 849 |
|
|---|
| 850 | /**
|
|---|
| 851 | * IN <AL|AX|EAX>, <DX|imm16>
|
|---|
| 852 | *
|
|---|
| 853 | * @returns Strict VBox status code. Informational status codes other than the one documented
|
|---|
| 854 | * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
|
|---|
| 855 | * @retval VINF_SUCCESS Success.
|
|---|
| 856 | * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
|
|---|
| 857 | * status code must be passed on to EM.
|
|---|
| 858 | * @retval VINF_IOM_HC_IOPORT_READ Defer the read to ring-3. (R0/GC only)
|
|---|
| 859 | * @retval VINF_EM_RAW_GUEST_TRAP The exception was left pending. (TRPMRaiseXcptErr)
|
|---|
| 860 | * @retval VINF_TRPM_XCPT_DISPATCHED The exception was raised and dispatched for raw-mode execution. (TRPMRaiseXcptErr)
|
|---|
| 861 | * @retval VINF_EM_RESCHEDULE_REM The exception was dispatched and cannot be executed in raw-mode. (TRPMRaiseXcptErr)
|
|---|
| 862 | *
|
|---|
| 863 | * @param pVM The virtual machine (GC pointer ofcourse).
|
|---|
| 864 | * @param pRegFrame Pointer to CPUMCTXCORE guest registers structure.
|
|---|
| 865 | * @param pCpu Disassembler CPU state.
|
|---|
| 866 | */
|
|---|
| 867 | IOMDECL(int) IOMInterpretIN(PVM pVM, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pCpu)
|
|---|
| 868 | {
|
|---|
| 869 | #ifdef IN_GC
|
|---|
| 870 | STAM_COUNTER_INC(&pVM->iom.s.StatGCInstIn);
|
|---|
| 871 | #endif
|
|---|
| 872 |
|
|---|
| 873 | /*
|
|---|
| 874 | * Get port number from second parameter.
|
|---|
| 875 | * And get the register size from the first parameter.
|
|---|
| 876 | */
|
|---|
| 877 | uint32_t uPort = 0;
|
|---|
| 878 | unsigned cbSize = 0;
|
|---|
| 879 | bool fRc = iomGetRegImmData(pCpu, &pCpu->param2, pRegFrame, &uPort, &cbSize);
|
|---|
| 880 | AssertMsg(fRc, ("Failed to get reg/imm port number!\n")); NOREF(fRc);
|
|---|
| 881 |
|
|---|
| 882 | cbSize = iomGetRegSize(pCpu, &pCpu->param1);
|
|---|
| 883 | Assert(cbSize > 0);
|
|---|
| 884 | int rc = IOMInterpretCheckPortIOAccess(pVM, pRegFrame, uPort, cbSize);
|
|---|
| 885 | if (rc == VINF_SUCCESS)
|
|---|
| 886 | {
|
|---|
| 887 | /*
|
|---|
| 888 | * Attemp to read the port.
|
|---|
| 889 | */
|
|---|
| 890 | uint32_t u32Data = ~0U;
|
|---|
| 891 | rc = IOMIOPortRead(pVM, uPort, &u32Data, cbSize);
|
|---|
| 892 | if (IOM_SUCCESS(rc))
|
|---|
| 893 | {
|
|---|
| 894 | /*
|
|---|
| 895 | * Store the result in the AL|AX|EAX register.
|
|---|
| 896 | */
|
|---|
| 897 | fRc = iomSaveDataToReg(pCpu, &pCpu->param1, pRegFrame, u32Data);
|
|---|
| 898 | AssertMsg(fRc, ("Failed to store register value!\n")); NOREF(fRc);
|
|---|
| 899 | }
|
|---|
| 900 | else
|
|---|
| 901 | AssertMsg(rc == VINF_IOM_HC_IOPORT_READ || VBOX_FAILURE(rc), ("%Vrc\n", rc));
|
|---|
| 902 | }
|
|---|
| 903 | else
|
|---|
| 904 | AssertMsg(rc == VINF_EM_RAW_GUEST_TRAP || rc == VINF_TRPM_XCPT_DISPATCHED || rc == VINF_TRPM_XCPT_DISPATCHED || VBOX_FAILURE(rc), ("%Vrc\n", rc));
|
|---|
| 905 | return rc;
|
|---|
| 906 | }
|
|---|
| 907 |
|
|---|
| 908 |
|
|---|
| 909 | /**
|
|---|
| 910 | * OUT <DX|imm16>, <AL|AX|EAX>
|
|---|
| 911 | *
|
|---|
| 912 | * @returns Strict VBox status code. Informational status codes other than the one documented
|
|---|
| 913 | * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
|
|---|
| 914 | * @retval VINF_SUCCESS Success.
|
|---|
| 915 | * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
|
|---|
| 916 | * status code must be passed on to EM.
|
|---|
| 917 | * @retval VINF_IOM_HC_IOPORT_WRITE Defer the write to ring-3. (R0/GC only)
|
|---|
| 918 | * @retval VINF_EM_RAW_GUEST_TRAP The exception was left pending. (TRPMRaiseXcptErr)
|
|---|
| 919 | * @retval VINF_TRPM_XCPT_DISPATCHED The exception was raised and dispatched for raw-mode execution. (TRPMRaiseXcptErr)
|
|---|
| 920 | * @retval VINF_EM_RESCHEDULE_REM The exception was dispatched and cannot be executed in raw-mode. (TRPMRaiseXcptErr)
|
|---|
| 921 | *
|
|---|
| 922 | * @param pVM The virtual machine (GC pointer ofcourse).
|
|---|
| 923 | * @param pRegFrame Pointer to CPUMCTXCORE guest registers structure.
|
|---|
| 924 | * @param pCpu Disassembler CPU state.
|
|---|
| 925 | */
|
|---|
| 926 | IOMDECL(int) IOMInterpretOUT(PVM pVM, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pCpu)
|
|---|
| 927 | {
|
|---|
| 928 | #ifdef IN_GC
|
|---|
| 929 | STAM_COUNTER_INC(&pVM->iom.s.StatGCInstOut);
|
|---|
| 930 | #endif
|
|---|
| 931 |
|
|---|
| 932 | /*
|
|---|
| 933 | * Get port number from first parameter.
|
|---|
| 934 | * And get the register size and value from the second parameter.
|
|---|
| 935 | */
|
|---|
| 936 | uint32_t uPort = 0;
|
|---|
| 937 | unsigned cbSize = 0;
|
|---|
| 938 | bool fRc = iomGetRegImmData(pCpu, &pCpu->param1, pRegFrame, &uPort, &cbSize);
|
|---|
| 939 | AssertMsg(fRc, ("Failed to get reg/imm port number!\n")); NOREF(fRc);
|
|---|
| 940 |
|
|---|
| 941 | int rc = IOMInterpretCheckPortIOAccess(pVM, pRegFrame, uPort, cbSize);
|
|---|
| 942 | if (rc == VINF_SUCCESS)
|
|---|
| 943 | {
|
|---|
| 944 | uint32_t u32Data = 0;
|
|---|
| 945 | fRc = iomGetRegImmData(pCpu, &pCpu->param2, pRegFrame, &u32Data, &cbSize);
|
|---|
| 946 | AssertMsg(fRc, ("Failed to get reg value!\n")); NOREF(fRc);
|
|---|
| 947 |
|
|---|
| 948 | /*
|
|---|
| 949 | * Attempt to write to the port.
|
|---|
| 950 | */
|
|---|
| 951 | rc = IOMIOPortWrite(pVM, uPort, u32Data, cbSize);
|
|---|
| 952 | AssertMsg(rc == VINF_SUCCESS || rc == VINF_IOM_HC_IOPORT_WRITE || (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST) || VBOX_FAILURE(rc), ("%Vrc\n", rc));
|
|---|
| 953 | }
|
|---|
| 954 | else
|
|---|
| 955 | AssertMsg(rc == VINF_EM_RAW_GUEST_TRAP || rc == VINF_TRPM_XCPT_DISPATCHED || rc == VINF_TRPM_XCPT_DISPATCHED || VBOX_FAILURE(rc), ("%Vrc\n", rc));
|
|---|
| 956 | return rc;
|
|---|
| 957 | }
|
|---|
