| 1 | /* $Id: IOMInline.h 82313 2019-12-01 03:38:40Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IOM - Inlined functions.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2019 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 | #ifndef VMM_INCLUDED_SRC_include_IOMInline_h
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| 19 | #define VMM_INCLUDED_SRC_include_IOMInline_h
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| 20 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 21 | # pragma once
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| 22 | #endif
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| 23 |
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| 24 | #include <iprt/errcore.h>
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| 25 |
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| 26 | /** @addtogroup grp_iom_int Internals
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| 27 | * @internal
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| 28 | * @{
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| 29 | */
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| 30 |
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| 31 |
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| 32 | /**
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| 33 | * Gets the I/O port entry for the specified I/O port in the current context.
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| 34 | *
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| 35 | * @returns Pointer to I/O port entry.
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| 36 | * @returns NULL if no port registered.
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| 37 | *
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| 38 | * @param pVM The cross context VM structure.
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| 39 | * @param uPort The I/O port to lookup.
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| 40 | * @param poffPort Where to return the port offset relative to the
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| 41 | * start of the I/O port range.
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| 42 | * @param pidxLastHint Pointer to IOMCPU::idxIoPortLastRead or
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| 43 | * IOMCPU::idxIoPortLastWrite.
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| 44 | *
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| 45 | * @note In ring-0 it is possible to get an uninitialized entry (pDevIns is
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| 46 | * NULL, cPorts is 0), in which case there should be ring-3 handlers
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| 47 | * for the entry. Use IOMIOPORTENTRYR0::idxSelf to get the ring-3
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| 48 | * entry.
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| 49 | *
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| 50 | * @note This code is almost identical to iomMmioGetEntry, so keep in sync.
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| 51 | */
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| 52 | DECLINLINE(CTX_SUFF(PIOMIOPORTENTRY)) iomIoPortGetEntry(PVMCC pVM, RTIOPORT uPort, PRTIOPORT poffPort, uint16_t *pidxLastHint)
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| 53 | {
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| 54 | Assert(IOM_IS_SHARED_LOCK_OWNER(pVM));
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| 55 |
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| 56 | #ifdef IN_RING0
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| 57 | uint32_t iEnd = RT_MIN(pVM->iom.s.cIoPortLookupEntries, pVM->iomr0.s.cIoPortAlloc);
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| 58 | PCIOMIOPORTLOOKUPENTRY paLookup = pVM->iomr0.s.paIoPortLookup;
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| 59 | #else
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| 60 | uint32_t iEnd = pVM->iom.s.cIoPortLookupEntries;
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| 61 | PCIOMIOPORTLOOKUPENTRY paLookup = pVM->iom.s.paIoPortLookup;
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| 62 | #endif
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| 63 | if (iEnd > 0)
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| 64 | {
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| 65 | uint32_t iFirst = 0;
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| 66 | uint32_t i = *pidxLastHint;
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| 67 | if (i < iEnd)
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| 68 | { /* likely */ }
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| 69 | else
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| 70 | i = iEnd / 2;
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| 71 | for (;;)
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| 72 | {
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| 73 | PCIOMIOPORTLOOKUPENTRY pCur = &paLookup[i];
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| 74 | if (pCur->uFirstPort > uPort)
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| 75 | {
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| 76 | if (i > iFirst)
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| 77 | iEnd = i;
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| 78 | else
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| 79 | break;
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| 80 | }
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| 81 | else if (pCur->uLastPort < uPort)
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| 82 | {
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| 83 | i += 1;
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| 84 | if (i < iEnd)
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| 85 | iFirst = i;
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| 86 | else
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| 87 | break;
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| 88 | }
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| 89 | else
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| 90 | {
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| 91 | *pidxLastHint = (uint16_t)i;
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| 92 | *poffPort = uPort - pCur->uFirstPort;
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| 93 |
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| 94 | /*
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| 95 | * Translate the 'idx' member into a pointer.
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| 96 | */
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| 97 | size_t const idx = pCur->idx;
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| 98 | #ifdef IN_RING0
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| 99 | AssertMsg(idx < pVM->iom.s.cIoPortRegs && idx < pVM->iomr0.s.cIoPortAlloc,
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| 100 | ("%#zx vs %#x/%x (port %#x)\n", idx, pVM->iom.s.cIoPortRegs, pVM->iomr0.s.cIoPortMax, uPort));
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| 101 | if (idx < pVM->iomr0.s.cIoPortAlloc)
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| 102 | return &pVM->iomr0.s.paIoPortRegs[idx];
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| 103 | #else
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| 104 | if (idx < pVM->iom.s.cIoPortRegs)
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| 105 | return &pVM->iom.s.paIoPortRegs[idx];
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| 106 | AssertMsgFailed(("%#zx vs %#x (port %#x)\n", idx, pVM->iom.s.cIoPortRegs, uPort));
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| 107 | #endif
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| 108 | break;
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| 109 | }
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| 110 |
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| 111 | i = iFirst + (iEnd - iFirst) / 2;
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| 112 | }
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| 113 | }
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| 114 | *poffPort = 0;
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| 115 | return NULL;
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| 116 | }
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| 117 |
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| 118 |
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| 119 | #ifdef VBOX_WITH_STATISTICS
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| 120 | /**
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| 121 | * Gets the statistics entry for an I/O port.
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| 122 | *
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| 123 | * @returns Pointer to stats. Instead of NULL, a pointer to IoPortDummyStats is
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| 124 | * returned, so the caller does not need to check for NULL.
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| 125 | *
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| 126 | * @param pVM The cross context VM structure.
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| 127 | * @param pRegEntry The I/O port entry to get stats for.
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| 128 | * @param offPort The offset of the port relative to the start of the
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| 129 | * registration entry.
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| 130 | */
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| 131 | DECLINLINE(PIOMIOPORTSTATSENTRY) iomIoPortGetStats(PVMCC pVM, CTX_SUFF(PIOMIOPORTENTRY) pRegEntry, uint16_t offPort)
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| 132 | {
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| 133 | size_t idxStats = pRegEntry->idxStats;
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| 134 | idxStats += offPort;
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| 135 | # ifdef IN_RING0
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| 136 | if (idxStats < pVM->iomr0.s.cIoPortStatsAllocation)
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| 137 | return &pVM->iomr0.s.paIoPortStats[idxStats];
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| 138 | # else
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| 139 | if (idxStats < pVM->iom.s.cIoPortStats)
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| 140 | return &pVM->iom.s.paIoPortStats[idxStats];
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| 141 | # endif
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| 142 | return &pVM->iom.s.IoPortDummyStats;
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| 143 | }
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| 144 | #endif
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| 145 |
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| 146 |
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| 147 | /**
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| 148 | * Gets the MMIO region entry for the specified address in the current context.
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| 149 | *
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| 150 | * @returns Pointer to MMIO region entry.
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| 151 | * @returns NULL if no MMIO region registered for the given address.
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| 152 | *
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| 153 | * @param pVM The cross context VM structure.
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| 154 | * @param GCPhys The address to lookup.
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| 155 | * @param poffRegion Where to return the byte offset into the MMIO
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| 156 | * region that corresponds to @a GCPhys.
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| 157 | * @param pidxLastHint Pointer to IOMCPU::idxMmioLastRead,
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| 158 | * IOMCPU::idxMmioLastWrite, or similar.
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| 159 | *
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| 160 | * @note In ring-0 it is possible to get an uninitialized entry (pDevIns is
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| 161 | * NULL, cbRegion is 0), in which case there should be ring-3 handlers
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| 162 | * for the entry. Use IOMMMIOENTRYR0::idxSelf to get the ring-3 entry.
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| 163 | *
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| 164 | * @note This code is almost identical to iomIoPortGetEntry, so keep in sync.
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| 165 | */
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| 166 | DECLINLINE(CTX_SUFF(PIOMMMIOENTRY)) iomMmioGetEntry(PVMCC pVM, RTGCPHYS GCPhys, PRTGCPHYS poffRegion, uint16_t *pidxLastHint)
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| 167 | {
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| 168 | Assert(IOM_IS_SHARED_LOCK_OWNER(pVM));
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| 169 |
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| 170 | #ifdef IN_RING0
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| 171 | uint32_t iEnd = RT_MIN(pVM->iom.s.cMmioLookupEntries, pVM->iomr0.s.cMmioAlloc);
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| 172 | PCIOMMMIOLOOKUPENTRY paLookup = pVM->iomr0.s.paMmioLookup;
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| 173 | #else
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| 174 | uint32_t iEnd = pVM->iom.s.cMmioLookupEntries;
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| 175 | PCIOMMMIOLOOKUPENTRY paLookup = pVM->iom.s.paMmioLookup;
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| 176 | #endif
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| 177 | if (iEnd > 0)
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| 178 | {
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| 179 | uint32_t iFirst = 0;
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| 180 | uint32_t i = *pidxLastHint;
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| 181 | if (i < iEnd)
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| 182 | { /* likely */ }
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| 183 | else
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| 184 | i = iEnd / 2;
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| 185 | for (;;)
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| 186 | {
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| 187 | PCIOMMMIOLOOKUPENTRY pCur = &paLookup[i];
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| 188 | if (pCur->GCPhysFirst > GCPhys)
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| 189 | {
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| 190 | if (i > iFirst)
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| 191 | iEnd = i;
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| 192 | else
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| 193 | break;
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| 194 | }
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| 195 | else if (pCur->GCPhysLast < GCPhys)
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| 196 | {
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| 197 | i += 1;
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| 198 | if (i < iEnd)
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| 199 | iFirst = i;
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| 200 | else
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| 201 | break;
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| 202 | }
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| 203 | else
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| 204 | {
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| 205 | *pidxLastHint = (uint16_t)i;
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| 206 | *poffRegion = GCPhys - pCur->GCPhysFirst;
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| 207 |
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| 208 | /*
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| 209 | * Translate the 'idx' member into a pointer.
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| 210 | */
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| 211 | size_t const idx = pCur->idx;
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| 212 | #ifdef IN_RING0
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| 213 | AssertMsg(idx < pVM->iom.s.cMmioRegs && idx < pVM->iomr0.s.cMmioAlloc,
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| 214 | ("%#zx vs %#x/%x (GCPhys=%RGp)\n", idx, pVM->iom.s.cMmioRegs, pVM->iomr0.s.cMmioMax, GCPhys));
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| 215 | if (idx < pVM->iomr0.s.cMmioAlloc)
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| 216 | return &pVM->iomr0.s.paMmioRegs[idx];
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| 217 | #else
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| 218 | if (idx < pVM->iom.s.cMmioRegs)
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| 219 | return &pVM->iom.s.paMmioRegs[idx];
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| 220 | AssertMsgFailed(("%#zx vs %#x (GCPhys=%RGp)\n", idx, pVM->iom.s.cMmioRegs, GCPhys));
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| 221 | #endif
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| 222 | break;
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| 223 | }
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| 224 |
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| 225 | i = iFirst + (iEnd - iFirst) / 2;
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| 226 | }
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| 227 | }
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| 228 | *poffRegion = 0;
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| 229 | return NULL;
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| 230 | }
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| 231 |
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| 232 |
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| 233 | #ifdef VBOX_WITH_STATISTICS
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| 234 | /**
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| 235 | * Gets the statistics entry for an MMIO region.
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| 236 | *
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| 237 | * @returns Pointer to stats. Instead of NULL, a pointer to MmioDummyStats is
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| 238 | * returned, so the caller does not need to check for NULL.
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| 239 | *
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| 240 | * @param pVM The cross context VM structure.
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| 241 | * @param pRegEntry The I/O port entry to get stats for.
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| 242 | */
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| 243 | DECLINLINE(PIOMMMIOSTATSENTRY) iomMmioGetStats(PVMCC pVM, CTX_SUFF(PIOMMMIOENTRY) pRegEntry)
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| 244 | {
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| 245 | size_t idxStats = pRegEntry->idxStats;
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| 246 | # ifdef IN_RING0
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| 247 | if (idxStats < pVM->iomr0.s.cMmioStatsAllocation)
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| 248 | return &pVM->iomr0.s.paMmioStats[idxStats];
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| 249 | # else
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| 250 | if (idxStats < pVM->iom.s.cMmioStats)
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| 251 | return &pVM->iom.s.paMmioStats[idxStats];
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| 252 | # endif
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| 253 | return &pVM->iom.s.MmioDummyStats;
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| 254 | }
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| 255 | #endif
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| 256 |
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| 257 | /** @} */
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| 258 |
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| 259 | #endif /* !VMM_INCLUDED_SRC_include_IOMInline_h */
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| 260 |
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