1 | /* $Id: VBoxPci.c 106061 2024-09-16 14:03:52Z vboxsync $ */
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2 | /** @file
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3 | * VBoxPci - PCI card passthrough support (Host), Common Code.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2011-2024 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 | /** @page pg_rawpci VBoxPci - host PCI support
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38 | *
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39 | * This is a kernel module that works as host proxy between guest and
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40 | * PCI hardware.
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41 | *
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42 | */
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43 |
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44 | #define LOG_GROUP LOG_GROUP_DEV_PCI_RAW
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45 | #include <VBox/log.h>
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46 | #include <VBox/err.h>
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47 | #include <VBox/sup.h>
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48 | #include <VBox/version.h>
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49 |
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50 | #include <iprt/string.h>
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51 | #include <iprt/assert.h>
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52 | #include <iprt/spinlock.h>
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53 | #include <iprt/uuid.h>
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54 | #include <iprt/asm.h>
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55 | #include <iprt/mem.h>
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56 |
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57 | #include "VBoxPciInternal.h"
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58 |
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59 |
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60 | #define DEVPORT_2_VBOXRAWPCIINS(pPort) \
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61 | ( (PVBOXRAWPCIINS)((uint8_t *)pPort - RT_OFFSETOF(VBOXRAWPCIINS, DevPort)) )
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62 |
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63 |
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64 | /**
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65 | * Implements the SUPDRV component factor interface query method.
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66 | *
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67 | * @returns Pointer to an interface. NULL if not supported.
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68 | *
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69 | * @param pSupDrvFactory Pointer to the component factory registration structure.
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70 | * @param pSession The session - unused.
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71 | * @param pszInterfaceUuid The factory interface id.
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72 | */
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73 | static DECLCALLBACK(void *) vboxPciQueryFactoryInterface(PCSUPDRVFACTORY pSupDrvFactory, PSUPDRVSESSION pSession, const char *pszInterfaceUuid)
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74 | {
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75 | PVBOXRAWPCIGLOBALS pGlobals = (PVBOXRAWPCIGLOBALS)((uint8_t *)pSupDrvFactory - RT_OFFSETOF(VBOXRAWPCIGLOBALS, SupDrvFactory));
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76 |
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77 | /*
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78 | * Convert the UUID strings and compare them.
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79 | */
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80 | RTUUID UuidReq;
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81 | int rc = RTUuidFromStr(&UuidReq, pszInterfaceUuid);
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82 | if (RT_SUCCESS(rc))
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83 | {
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84 | if (!RTUuidCompareStr(&UuidReq, RAWPCIFACTORY_UUID_STR))
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85 | {
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86 | ASMAtomicIncS32(&pGlobals->cFactoryRefs);
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87 | return &pGlobals->RawPciFactory;
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88 | }
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89 | }
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90 | else
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91 | Log(("VBoxRawPci: rc=%Rrc, uuid=%s\n", rc, pszInterfaceUuid));
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92 |
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93 | return NULL;
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94 | }
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95 | DECLINLINE(int) vboxPciDevLock(PVBOXRAWPCIINS pThis)
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96 | {
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97 | #ifdef VBOX_WITH_SHARED_PCI_INTERRUPTS
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98 | RTSpinlockAcquire(pThis->hSpinlock);
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99 | return VINF_SUCCESS;
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100 | #else
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101 | int rc = RTSemFastMutexRequest(pThis->hFastMtx);
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102 |
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103 | AssertRC(rc);
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104 | return rc;
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105 | #endif
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106 | }
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107 |
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108 | DECLINLINE(void) vboxPciDevUnlock(PVBOXRAWPCIINS pThis)
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109 | {
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110 | #ifdef VBOX_WITH_SHARED_PCI_INTERRUPTS
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111 | RTSpinlockRelease(pThis->hSpinlock);
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112 | #else
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113 | RTSemFastMutexRelease(pThis->hFastMtx);
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114 | #endif
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115 | }
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116 |
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117 | DECLINLINE(int) vboxPciVmLock(PVBOXRAWPCIDRVVM pThis)
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118 | {
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119 | int rc = RTSemFastMutexRequest(pThis->hFastMtx);
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120 | AssertRC(rc);
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121 | return rc;
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122 | }
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123 |
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124 | DECLINLINE(void) vboxPciVmUnlock(PVBOXRAWPCIDRVVM pThis)
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125 | {
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126 | RTSemFastMutexRelease(pThis->hFastMtx);
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127 | }
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128 |
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129 | DECLINLINE(int) vboxPciGlobalsLock(PVBOXRAWPCIGLOBALS pGlobals)
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130 | {
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131 | int rc = RTSemFastMutexRequest(pGlobals->hFastMtx);
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132 | AssertRC(rc);
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133 | return rc;
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134 | }
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135 |
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136 | DECLINLINE(void) vboxPciGlobalsUnlock(PVBOXRAWPCIGLOBALS pGlobals)
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137 | {
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138 | RTSemFastMutexRelease(pGlobals->hFastMtx);
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139 | }
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140 |
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141 | static PVBOXRAWPCIINS vboxPciFindInstanceLocked(PVBOXRAWPCIGLOBALS pGlobals, uint32_t iHostAddress)
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142 | {
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143 | PVBOXRAWPCIINS pCur;
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144 | for (pCur = pGlobals->pInstanceHead; pCur != NULL; pCur = pCur->pNext)
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145 | {
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146 | if (iHostAddress == pCur->HostPciAddress)
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147 | return pCur;
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148 | }
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149 | return NULL;
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150 | }
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151 |
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152 | static void vboxPciUnlinkInstanceLocked(PVBOXRAWPCIGLOBALS pGlobals, PVBOXRAWPCIINS pToUnlink)
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153 | {
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154 | if (pGlobals->pInstanceHead == pToUnlink)
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155 | pGlobals->pInstanceHead = pToUnlink->pNext;
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156 | else
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157 | {
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158 | PVBOXRAWPCIINS pCur;
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159 | for (pCur = pGlobals->pInstanceHead; pCur != NULL; pCur = pCur->pNext)
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160 | {
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161 | if (pCur->pNext == pToUnlink)
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162 | {
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163 | pCur->pNext = pToUnlink->pNext;
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164 | break;
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165 | }
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166 | }
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167 | }
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168 | pToUnlink->pNext = NULL;
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169 | }
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170 |
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171 |
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172 | #if 0 /** @todo r=bird: Who the heck is supposed to call this?!? */
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173 | DECLHIDDEN(void) vboxPciDevCleanup(PVBOXRAWPCIINS pThis)
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174 | {
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175 | pThis->DevPort.pfnDeinit(&pThis->DevPort, 0);
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176 |
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177 | if (pThis->hFastMtx)
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178 | {
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179 | RTSemFastMutexDestroy(pThis->hFastMtx);
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180 | pThis->hFastMtx = NIL_RTSEMFASTMUTEX;
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181 | }
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182 |
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183 | if (pThis->hSpinlock)
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184 | {
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185 | RTSpinlockDestroy(pThis->hSpinlock);
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186 | pThis->hSpinlock = NIL_RTSPINLOCK;
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187 | }
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188 |
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189 | vboxPciGlobalsLock(pThis->pGlobals);
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190 | vboxPciUnlinkInstanceLocked(pThis->pGlobals, pThis);
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191 | vboxPciGlobalsUnlock(pThis->pGlobals);
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192 | }
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193 | #endif
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194 |
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195 |
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196 | /**
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197 | * @interface_method_impl{RAWPCIDEVPORT,pfnInit}
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198 | */
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199 | static DECLCALLBACK(int) vboxPciDevInit(PRAWPCIDEVPORT pPort, uint32_t fFlags)
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200 | {
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201 | PVBOXRAWPCIINS pThis = DEVPORT_2_VBOXRAWPCIINS(pPort);
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202 | int rc;
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203 |
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204 | vboxPciDevLock(pThis);
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205 |
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206 | rc = vboxPciOsDevInit(pThis, fFlags);
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207 |
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208 | vboxPciDevUnlock(pThis);
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209 |
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210 | return rc;
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211 | }
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212 |
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213 | /**
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214 | * @interface_method_impl{RAWPCIDEVPORT,pfnDeinit}
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215 | */
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216 | static DECLCALLBACK(int) vboxPciDevDeinit(PRAWPCIDEVPORT pPort, uint32_t fFlags)
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217 | {
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218 | PVBOXRAWPCIINS pThis = DEVPORT_2_VBOXRAWPCIINS(pPort);
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219 | int rc;
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220 |
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221 | vboxPciDevLock(pThis);
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222 |
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223 | if (pThis->IrqHandler.pfnIrqHandler)
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224 | {
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225 | vboxPciOsDevUnregisterIrqHandler(pThis, pThis->IrqHandler.iHostIrq);
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226 | pThis->IrqHandler.iHostIrq = 0;
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227 | pThis->IrqHandler.pfnIrqHandler = NULL;
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228 | }
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229 |
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230 | rc = vboxPciOsDevDeinit(pThis, fFlags);
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231 |
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232 | vboxPciDevUnlock(pThis);
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233 |
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234 | return rc;
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235 | }
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236 |
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237 |
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238 | /**
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239 | * @interface_method_impl{RAWPCIDEVPORT,pfnDestroy}
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240 | */
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241 | static DECLCALLBACK(int) vboxPciDevDestroy(PRAWPCIDEVPORT pPort)
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242 | {
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243 | PVBOXRAWPCIINS pThis = DEVPORT_2_VBOXRAWPCIINS(pPort);
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244 | int rc;
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245 |
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246 | rc = vboxPciOsDevDestroy(pThis);
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247 | if (rc == VINF_SUCCESS)
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248 | {
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249 | if (pThis->hFastMtx)
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250 | {
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251 | RTSemFastMutexDestroy(pThis->hFastMtx);
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252 | pThis->hFastMtx = NIL_RTSEMFASTMUTEX;
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253 | }
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254 |
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255 | if (pThis->hSpinlock)
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256 | {
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257 | RTSpinlockDestroy(pThis->hSpinlock);
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258 | pThis->hSpinlock = NIL_RTSPINLOCK;
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259 | }
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260 |
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261 | vboxPciGlobalsLock(pThis->pGlobals);
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262 | vboxPciUnlinkInstanceLocked(pThis->pGlobals, pThis);
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263 | vboxPciGlobalsUnlock(pThis->pGlobals);
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264 |
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265 | RTMemFree(pThis);
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266 | }
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267 |
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268 | return rc;
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269 | }
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270 | /**
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271 | * @interface_method_impl{RAWPCIDEVPORT,pfnGetRegionInfo}
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272 | */
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273 | static DECLCALLBACK(int) vboxPciDevGetRegionInfo(PRAWPCIDEVPORT pPort,
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274 | int32_t iRegion,
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275 | RTHCPHYS *pRegionStart,
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276 | uint64_t *pu64RegionSize,
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277 | bool *pfPresent,
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278 | uint32_t *pfFlags)
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279 | {
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280 | PVBOXRAWPCIINS pThis = DEVPORT_2_VBOXRAWPCIINS(pPort);
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281 | int rc;
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282 |
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283 | vboxPciDevLock(pThis);
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284 |
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285 | rc = vboxPciOsDevGetRegionInfo(pThis, iRegion,
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286 | pRegionStart, pu64RegionSize,
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287 | pfPresent, pfFlags);
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288 | vboxPciDevUnlock(pThis);
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289 |
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290 | return rc;
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291 | }
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292 |
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293 | /**
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294 | * @interface_method_impl{RAWPCIDEVPORT,pfnMapRegion}
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295 | */
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296 | static DECLCALLBACK(int) vboxPciDevMapRegion(PRAWPCIDEVPORT pPort,
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297 | int32_t iRegion,
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298 | RTHCPHYS RegionStart,
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299 | uint64_t u64RegionSize,
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300 | int32_t fFlags,
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301 | RTR0PTR *pRegionBaseR0)
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302 | {
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303 | PVBOXRAWPCIINS pThis = DEVPORT_2_VBOXRAWPCIINS(pPort);
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304 | int rc;
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305 |
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306 | vboxPciDevLock(pThis);
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307 |
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308 | rc = vboxPciOsDevMapRegion(pThis, iRegion, RegionStart, u64RegionSize, fFlags, pRegionBaseR0);
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309 |
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310 | vboxPciDevUnlock(pThis);
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311 |
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312 | return rc;
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313 | }
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314 |
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315 | /**
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316 | * @interface_method_impl{RAWPCIDEVPORT,pfnUnmapRegion}
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317 | */
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318 | static DECLCALLBACK(int) vboxPciDevUnmapRegion(PRAWPCIDEVPORT pPort,
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319 | int32_t iRegion,
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320 | RTHCPHYS RegionStart,
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321 | uint64_t u64RegionSize,
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322 | RTR0PTR RegionBase)
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323 | {
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324 | PVBOXRAWPCIINS pThis = DEVPORT_2_VBOXRAWPCIINS(pPort);
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325 | int rc;
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326 |
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327 | vboxPciDevLock(pThis);
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328 |
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329 | rc = vboxPciOsDevUnmapRegion(pThis, iRegion, RegionStart, u64RegionSize, RegionBase);
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330 |
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331 | vboxPciDevUnlock(pThis);
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332 |
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333 | return rc;
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334 | }
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335 |
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336 | /**
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337 | * @interface_method_impl{RAWPCIDEVPORT,pfnPciCfgRead}
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338 | */
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339 | static DECLCALLBACK(int) vboxPciDevPciCfgRead(PRAWPCIDEVPORT pPort,
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340 | uint32_t Register,
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341 | PCIRAWMEMLOC *pValue)
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342 | {
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343 | PVBOXRAWPCIINS pThis = DEVPORT_2_VBOXRAWPCIINS(pPort);
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344 | int rc;
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345 |
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346 | vboxPciDevLock(pThis);
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347 |
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348 | rc = vboxPciOsDevPciCfgRead(pThis, Register, pValue);
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349 |
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350 | vboxPciDevUnlock(pThis);
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351 |
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352 | return rc;
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353 | }
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354 |
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355 | /**
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356 | * @interface_method_impl{RAWPCIDEVPORT,pfnPciCfgWrite}
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357 | */
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358 | static DECLCALLBACK(int) vboxPciDevPciCfgWrite(PRAWPCIDEVPORT pPort,
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359 | uint32_t Register,
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360 | PCIRAWMEMLOC *pValue)
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361 | {
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362 | PVBOXRAWPCIINS pThis = DEVPORT_2_VBOXRAWPCIINS(pPort);
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363 | int rc;
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364 |
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365 | vboxPciDevLock(pThis);
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366 |
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367 | rc = vboxPciOsDevPciCfgWrite(pThis, Register, pValue);
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368 |
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369 | vboxPciDevUnlock(pThis);
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370 |
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371 | return rc;
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372 | }
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373 |
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374 | static DECLCALLBACK(int) vboxPciDevRegisterIrqHandler(PRAWPCIDEVPORT pPort,
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375 | PFNRAWPCIISR pfnHandler,
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376 | void* pIrqContext,
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377 | PCIRAWISRHANDLE *phIsr)
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378 | {
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379 | PVBOXRAWPCIINS pThis = DEVPORT_2_VBOXRAWPCIINS(pPort);
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380 | int rc;
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381 | int32_t iHostIrq = 0;
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382 |
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383 | if (pfnHandler == NULL)
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384 | return VERR_INVALID_PARAMETER;
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385 |
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386 | vboxPciDevLock(pThis);
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387 |
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388 | if (pThis->IrqHandler.pfnIrqHandler)
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389 | {
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390 | rc = VERR_ALREADY_EXISTS;
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391 | }
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392 | else
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393 | {
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394 | rc = vboxPciOsDevRegisterIrqHandler(pThis, pfnHandler, pIrqContext, &iHostIrq);
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395 | if (RT_SUCCESS(rc))
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396 | {
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397 | *phIsr = 0xcafe0000;
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398 | pThis->IrqHandler.iHostIrq = iHostIrq;
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399 | pThis->IrqHandler.pfnIrqHandler = pfnHandler;
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400 | pThis->IrqHandler.pIrqContext = pIrqContext;
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401 | }
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402 | }
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403 |
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404 | vboxPciDevUnlock(pThis);
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405 |
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406 | return rc;
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407 | }
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408 |
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409 | static DECLCALLBACK(int) vboxPciDevUnregisterIrqHandler(PRAWPCIDEVPORT pPort,
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410 | PCIRAWISRHANDLE hIsr)
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411 | {
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412 | PVBOXRAWPCIINS pThis = DEVPORT_2_VBOXRAWPCIINS(pPort);
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413 | int rc;
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414 |
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415 | if (hIsr != 0xcafe0000)
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416 | return VERR_INVALID_PARAMETER;
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417 |
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418 | vboxPciDevLock(pThis);
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419 |
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420 | rc = vboxPciOsDevUnregisterIrqHandler(pThis, pThis->IrqHandler.iHostIrq);
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421 | if (RT_SUCCESS(rc))
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422 | {
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423 | pThis->IrqHandler.pfnIrqHandler = NULL;
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424 | pThis->IrqHandler.pIrqContext = NULL;
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425 | pThis->IrqHandler.iHostIrq = 0;
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426 | }
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427 | vboxPciDevUnlock(pThis);
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428 |
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429 | return rc;
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430 | }
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431 |
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432 | static DECLCALLBACK(int) vboxPciDevPowerStateChange(PRAWPCIDEVPORT pPort,
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433 | PCIRAWPOWERSTATE aState,
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434 | uint64_t *pu64Param)
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435 | {
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436 | PVBOXRAWPCIINS pThis = DEVPORT_2_VBOXRAWPCIINS(pPort);
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437 | int rc;
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438 |
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439 | vboxPciDevLock(pThis);
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440 |
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441 | rc = vboxPciOsDevPowerStateChange(pThis, aState);
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442 |
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443 | switch (aState)
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444 | {
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445 | case PCIRAW_POWER_ON:
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446 | /*
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447 | * Let virtual device know about VM caps.
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448 | */
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449 | *pu64Param = VBOX_DRV_VMDATA(pThis)->pPerVmData->fVmCaps;
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450 | break;
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451 | default:
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452 | pu64Param = 0;
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453 | break;
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454 | }
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---|
455 |
|
---|
456 |
|
---|
457 | vboxPciDevUnlock(pThis);
|
---|
458 |
|
---|
459 | return rc;
|
---|
460 | }
|
---|
461 |
|
---|
462 | /**
|
---|
463 | * Creates a new instance.
|
---|
464 | *
|
---|
465 | * @returns VBox status code.
|
---|
466 | * @param pGlobals The globals.
|
---|
467 | * @param u32HostAddress Host address.
|
---|
468 | * @param fFlags Flags.
|
---|
469 | * @param pVmCtx VM context.
|
---|
470 | * @param ppDevPort Where to store the pointer to our port interface.
|
---|
471 | * @param pfDevFlags The device flags.
|
---|
472 | */
|
---|
473 | static int vboxPciNewInstance(PVBOXRAWPCIGLOBALS pGlobals,
|
---|
474 | uint32_t u32HostAddress,
|
---|
475 | uint32_t fFlags,
|
---|
476 | PRAWPCIPERVM pVmCtx,
|
---|
477 | PRAWPCIDEVPORT *ppDevPort,
|
---|
478 | uint32_t *pfDevFlags)
|
---|
479 | {
|
---|
480 | int rc;
|
---|
481 | PVBOXRAWPCIINS pNew = (PVBOXRAWPCIINS)RTMemAllocZ(sizeof(*pNew));
|
---|
482 | if (!pNew)
|
---|
483 | return VERR_NO_MEMORY;
|
---|
484 |
|
---|
485 | pNew->pGlobals = pGlobals;
|
---|
486 | pNew->hSpinlock = NIL_RTSPINLOCK;
|
---|
487 | pNew->cRefs = 1;
|
---|
488 | pNew->pNext = NULL;
|
---|
489 | pNew->HostPciAddress = u32HostAddress;
|
---|
490 | pNew->pVmCtx = pVmCtx;
|
---|
491 |
|
---|
492 | pNew->DevPort.u32Version = RAWPCIDEVPORT_VERSION;
|
---|
493 |
|
---|
494 | pNew->DevPort.pfnInit = vboxPciDevInit;
|
---|
495 | pNew->DevPort.pfnDeinit = vboxPciDevDeinit;
|
---|
496 | pNew->DevPort.pfnDestroy = vboxPciDevDestroy;
|
---|
497 | pNew->DevPort.pfnGetRegionInfo = vboxPciDevGetRegionInfo;
|
---|
498 | pNew->DevPort.pfnMapRegion = vboxPciDevMapRegion;
|
---|
499 | pNew->DevPort.pfnUnmapRegion = vboxPciDevUnmapRegion;
|
---|
500 | pNew->DevPort.pfnPciCfgRead = vboxPciDevPciCfgRead;
|
---|
501 | pNew->DevPort.pfnPciCfgWrite = vboxPciDevPciCfgWrite;
|
---|
502 | pNew->DevPort.pfnPciCfgRead = vboxPciDevPciCfgRead;
|
---|
503 | pNew->DevPort.pfnPciCfgWrite = vboxPciDevPciCfgWrite;
|
---|
504 | pNew->DevPort.pfnRegisterIrqHandler = vboxPciDevRegisterIrqHandler;
|
---|
505 | pNew->DevPort.pfnUnregisterIrqHandler = vboxPciDevUnregisterIrqHandler;
|
---|
506 | pNew->DevPort.pfnPowerStateChange = vboxPciDevPowerStateChange;
|
---|
507 | pNew->DevPort.u32VersionEnd = RAWPCIDEVPORT_VERSION;
|
---|
508 |
|
---|
509 | rc = RTSpinlockCreate(&pNew->hSpinlock, RTSPINLOCK_FLAGS_INTERRUPT_SAFE, "VBoxPCI");
|
---|
510 | if (RT_SUCCESS(rc))
|
---|
511 | {
|
---|
512 | rc = RTSemFastMutexCreate(&pNew->hFastMtx);
|
---|
513 | if (RT_SUCCESS(rc))
|
---|
514 | {
|
---|
515 | rc = pNew->DevPort.pfnInit(&pNew->DevPort, fFlags);
|
---|
516 | if (RT_SUCCESS(rc))
|
---|
517 | {
|
---|
518 | *ppDevPort = &pNew->DevPort;
|
---|
519 |
|
---|
520 | pNew->pNext = pGlobals->pInstanceHead;
|
---|
521 | pGlobals->pInstanceHead = pNew;
|
---|
522 | }
|
---|
523 | else
|
---|
524 | {
|
---|
525 | RTSemFastMutexDestroy(pNew->hFastMtx);
|
---|
526 | RTSpinlockDestroy(pNew->hSpinlock);
|
---|
527 | RTMemFree(pNew);
|
---|
528 | }
|
---|
529 | }
|
---|
530 | }
|
---|
531 |
|
---|
532 | return rc;
|
---|
533 | }
|
---|
534 |
|
---|
535 | /**
|
---|
536 | * @interface_method_impl{RAWPCIFACTORY,pfnCreateAndConnect}
|
---|
537 | */
|
---|
538 | static DECLCALLBACK(int) vboxPciFactoryCreateAndConnect(PRAWPCIFACTORY pFactory,
|
---|
539 | uint32_t u32HostAddress,
|
---|
540 | uint32_t fFlags,
|
---|
541 | PRAWPCIPERVM pVmCtx,
|
---|
542 | PRAWPCIDEVPORT *ppDevPort,
|
---|
543 | uint32_t *pfDevFlags)
|
---|
544 | {
|
---|
545 | PVBOXRAWPCIGLOBALS pGlobals = (PVBOXRAWPCIGLOBALS)((uint8_t *)pFactory - RT_OFFSETOF(VBOXRAWPCIGLOBALS, RawPciFactory));
|
---|
546 | int rc;
|
---|
547 |
|
---|
548 | LogFlow(("vboxPciFactoryCreateAndConnect: PCI=%x fFlags=%#x\n", u32HostAddress, fFlags));
|
---|
549 | Assert(pGlobals->cFactoryRefs > 0);
|
---|
550 | rc = vboxPciGlobalsLock(pGlobals);
|
---|
551 | AssertRCReturn(rc, rc);
|
---|
552 |
|
---|
553 | /* First search if there's no existing instance with same host device
|
---|
554 | * address - if so - we cannot continue.
|
---|
555 | */
|
---|
556 | if (vboxPciFindInstanceLocked(pGlobals, u32HostAddress) != NULL)
|
---|
557 | {
|
---|
558 | rc = VERR_RESOURCE_BUSY;
|
---|
559 | goto unlock;
|
---|
560 | }
|
---|
561 |
|
---|
562 | rc = vboxPciNewInstance(pGlobals, u32HostAddress, fFlags, pVmCtx, ppDevPort, pfDevFlags);
|
---|
563 |
|
---|
564 | unlock:
|
---|
565 | vboxPciGlobalsUnlock(pGlobals);
|
---|
566 |
|
---|
567 | return rc;
|
---|
568 | }
|
---|
569 |
|
---|
570 | /**
|
---|
571 | * @interface_method_impl{RAWPCIFACTORY,pfnRelease}
|
---|
572 | */
|
---|
573 | static DECLCALLBACK(void) vboxPciFactoryRelease(PRAWPCIFACTORY pFactory)
|
---|
574 | {
|
---|
575 | PVBOXRAWPCIGLOBALS pGlobals = (PVBOXRAWPCIGLOBALS)((uint8_t *)pFactory - RT_OFFSETOF(VBOXRAWPCIGLOBALS, RawPciFactory));
|
---|
576 |
|
---|
577 | int32_t cRefs = ASMAtomicDecS32(&pGlobals->cFactoryRefs);
|
---|
578 | Assert(cRefs >= 0); NOREF(cRefs);
|
---|
579 | LogFlow(("vboxPciFactoryRelease: cRefs=%d (new)\n", cRefs));
|
---|
580 | }
|
---|
581 |
|
---|
582 | /**
|
---|
583 | * @interface_method_impl{RAWPCIFACTORY,pfnInitVm}
|
---|
584 | */
|
---|
585 | static DECLCALLBACK(int) vboxPciFactoryInitVm(PRAWPCIFACTORY pFactory,
|
---|
586 | PVM pVM,
|
---|
587 | PRAWPCIPERVM pVmData)
|
---|
588 | {
|
---|
589 | PVBOXRAWPCIDRVVM pThis = (PVBOXRAWPCIDRVVM)RTMemAllocZ(sizeof(VBOXRAWPCIDRVVM));
|
---|
590 | int rc;
|
---|
591 |
|
---|
592 | if (!pThis)
|
---|
593 | return VERR_NO_MEMORY;
|
---|
594 |
|
---|
595 | rc = RTSemFastMutexCreate(&pThis->hFastMtx);
|
---|
596 | if (RT_SUCCESS(rc))
|
---|
597 | {
|
---|
598 | rc = vboxPciOsInitVm(pThis, pVM, pVmData);
|
---|
599 |
|
---|
600 | if (RT_SUCCESS(rc))
|
---|
601 | {
|
---|
602 | #ifdef VBOX_WITH_IOMMU
|
---|
603 | /* If IOMMU notification routine in pVmData->pfnContigMemInfo
|
---|
604 | is set - we have functional IOMMU hardware. */
|
---|
605 | if (pVmData->pfnContigMemInfo)
|
---|
606 | pVmData->fVmCaps |= PCIRAW_VMFLAGS_HAS_IOMMU;
|
---|
607 | #endif
|
---|
608 | pThis->pPerVmData = pVmData;
|
---|
609 | pVmData->pDriverData = pThis;
|
---|
610 | return VINF_SUCCESS;
|
---|
611 | }
|
---|
612 |
|
---|
613 | RTSemFastMutexDestroy(pThis->hFastMtx);
|
---|
614 | pThis->hFastMtx = NIL_RTSEMFASTMUTEX;
|
---|
615 | RTMemFree(pThis);
|
---|
616 | }
|
---|
617 |
|
---|
618 | return rc;
|
---|
619 | }
|
---|
620 |
|
---|
621 | /**
|
---|
622 | * @interface_method_impl{RAWPCIFACTORY,pfnDeinitVm}
|
---|
623 | */
|
---|
624 | static DECLCALLBACK(void) vboxPciFactoryDeinitVm(PRAWPCIFACTORY pFactory,
|
---|
625 | PVM pVM,
|
---|
626 | PRAWPCIPERVM pVmData)
|
---|
627 | {
|
---|
628 | if (pVmData->pDriverData)
|
---|
629 | {
|
---|
630 | PVBOXRAWPCIDRVVM pThis = (PVBOXRAWPCIDRVVM)pVmData->pDriverData;
|
---|
631 |
|
---|
632 | #ifdef VBOX_WITH_IOMMU
|
---|
633 | /* If we have IOMMU, need to unmap all guest's physical pages from IOMMU on VM termination. */
|
---|
634 | #endif
|
---|
635 |
|
---|
636 | vboxPciOsDeinitVm(pThis, pVM);
|
---|
637 |
|
---|
638 | if (pThis->hFastMtx)
|
---|
639 | {
|
---|
640 | RTSemFastMutexDestroy(pThis->hFastMtx);
|
---|
641 | pThis->hFastMtx = NIL_RTSEMFASTMUTEX;
|
---|
642 | }
|
---|
643 |
|
---|
644 | RTMemFree(pThis);
|
---|
645 | pVmData->pDriverData = NULL;
|
---|
646 | }
|
---|
647 | }
|
---|
648 |
|
---|
649 |
|
---|
650 | static bool vboxPciCanUnload(PVBOXRAWPCIGLOBALS pGlobals)
|
---|
651 | {
|
---|
652 | int rc = vboxPciGlobalsLock(pGlobals);
|
---|
653 | bool fRc = !pGlobals->pInstanceHead
|
---|
654 | && pGlobals->cFactoryRefs <= 0;
|
---|
655 | vboxPciGlobalsUnlock(pGlobals);
|
---|
656 | AssertRC(rc);
|
---|
657 | return fRc;
|
---|
658 | }
|
---|
659 |
|
---|
660 |
|
---|
661 | static int vboxPciInitIdc(PVBOXRAWPCIGLOBALS pGlobals)
|
---|
662 | {
|
---|
663 | int rc;
|
---|
664 | Assert(!pGlobals->fIDCOpen);
|
---|
665 |
|
---|
666 | /*
|
---|
667 | * Establish a connection to SUPDRV and register our component factory.
|
---|
668 | */
|
---|
669 | rc = SUPR0IdcOpen(&pGlobals->SupDrvIDC, 0 /* iReqVersion = default */, 0 /* iMinVersion = default */, NULL, NULL, NULL);
|
---|
670 | if (RT_SUCCESS(rc))
|
---|
671 | {
|
---|
672 | rc = SUPR0IdcComponentRegisterFactory(&pGlobals->SupDrvIDC, &pGlobals->SupDrvFactory);
|
---|
673 | if (RT_SUCCESS(rc))
|
---|
674 | {
|
---|
675 | pGlobals->fIDCOpen = true;
|
---|
676 | Log(("VBoxRawPci: pSession=%p\n", SUPR0IdcGetSession(&pGlobals->SupDrvIDC)));
|
---|
677 | return rc;
|
---|
678 | }
|
---|
679 |
|
---|
680 | /* bail out. */
|
---|
681 | LogRel(("VBoxRawPci: Failed to register component factory, rc=%Rrc\n", rc));
|
---|
682 | SUPR0IdcClose(&pGlobals->SupDrvIDC);
|
---|
683 | }
|
---|
684 |
|
---|
685 | return rc;
|
---|
686 | }
|
---|
687 |
|
---|
688 |
|
---|
689 | /**
|
---|
690 | * Try to close the IDC connection to SUPDRV if established.
|
---|
691 | *
|
---|
692 | * @returns VBox status code.
|
---|
693 | * @retval VINF_SUCCESS on success.
|
---|
694 | * @retval VERR_WRONG_ORDER if we're busy.
|
---|
695 | *
|
---|
696 | * @param pGlobals Pointer to the globals.
|
---|
697 | */
|
---|
698 | static int vboxPciDeleteIdc(PVBOXRAWPCIGLOBALS pGlobals)
|
---|
699 | {
|
---|
700 | int rc;
|
---|
701 |
|
---|
702 | Assert(pGlobals->hFastMtx != NIL_RTSEMFASTMUTEX);
|
---|
703 |
|
---|
704 | /*
|
---|
705 | * Check before trying to deregister the factory.
|
---|
706 | */
|
---|
707 | if (!vboxPciCanUnload(pGlobals))
|
---|
708 | return VERR_WRONG_ORDER;
|
---|
709 |
|
---|
710 | if (!pGlobals->fIDCOpen)
|
---|
711 | rc = VINF_SUCCESS;
|
---|
712 | else
|
---|
713 | {
|
---|
714 | /*
|
---|
715 | * Disconnect from SUPDRV.
|
---|
716 | */
|
---|
717 | rc = SUPR0IdcComponentDeregisterFactory(&pGlobals->SupDrvIDC, &pGlobals->SupDrvFactory);
|
---|
718 | AssertRC(rc);
|
---|
719 | SUPR0IdcClose(&pGlobals->SupDrvIDC);
|
---|
720 | pGlobals->fIDCOpen = false;
|
---|
721 | }
|
---|
722 |
|
---|
723 | return rc;
|
---|
724 | }
|
---|
725 |
|
---|
726 |
|
---|
727 | /**
|
---|
728 | * Initializes the globals.
|
---|
729 | *
|
---|
730 | * @returns VBox status code.
|
---|
731 | * @param pGlobals Pointer to the globals.
|
---|
732 | */
|
---|
733 | static int vboxPciInitGlobals(PVBOXRAWPCIGLOBALS pGlobals)
|
---|
734 | {
|
---|
735 | /*
|
---|
736 | * Initialize the common portions of the structure.
|
---|
737 | */
|
---|
738 | int rc = RTSemFastMutexCreate(&pGlobals->hFastMtx);
|
---|
739 | if (RT_SUCCESS(rc))
|
---|
740 | {
|
---|
741 | pGlobals->pInstanceHead = NULL;
|
---|
742 | pGlobals->RawPciFactory.pfnRelease = vboxPciFactoryRelease;
|
---|
743 | pGlobals->RawPciFactory.pfnCreateAndConnect = vboxPciFactoryCreateAndConnect;
|
---|
744 | pGlobals->RawPciFactory.pfnInitVm = vboxPciFactoryInitVm;
|
---|
745 | pGlobals->RawPciFactory.pfnDeinitVm = vboxPciFactoryDeinitVm;
|
---|
746 | memcpy(pGlobals->SupDrvFactory.szName, "VBoxRawPci", sizeof("VBoxRawPci"));
|
---|
747 | pGlobals->SupDrvFactory.pfnQueryFactoryInterface = vboxPciQueryFactoryInterface;
|
---|
748 | pGlobals->fIDCOpen = false;
|
---|
749 | }
|
---|
750 | return rc;
|
---|
751 | }
|
---|
752 |
|
---|
753 |
|
---|
754 | /**
|
---|
755 | * Deletes the globals.
|
---|
756 | *
|
---|
757 | * @param pGlobals Pointer to the globals.
|
---|
758 | */
|
---|
759 | static void vboxPciDeleteGlobals(PVBOXRAWPCIGLOBALS pGlobals)
|
---|
760 | {
|
---|
761 | Assert(!pGlobals->fIDCOpen);
|
---|
762 |
|
---|
763 | /*
|
---|
764 | * Release resources.
|
---|
765 | */
|
---|
766 | if (pGlobals->hFastMtx)
|
---|
767 | {
|
---|
768 | RTSemFastMutexDestroy(pGlobals->hFastMtx);
|
---|
769 | pGlobals->hFastMtx = NIL_RTSEMFASTMUTEX;
|
---|
770 | }
|
---|
771 | }
|
---|
772 |
|
---|
773 |
|
---|
774 | int vboxPciInit(PVBOXRAWPCIGLOBALS pGlobals)
|
---|
775 | {
|
---|
776 |
|
---|
777 | /*
|
---|
778 | * Initialize the common portions of the structure.
|
---|
779 | */
|
---|
780 | int rc = vboxPciInitGlobals(pGlobals);
|
---|
781 | if (RT_SUCCESS(rc))
|
---|
782 | {
|
---|
783 | rc = vboxPciInitIdc(pGlobals);
|
---|
784 | if (RT_SUCCESS(rc))
|
---|
785 | return rc;
|
---|
786 |
|
---|
787 | /* bail out. */
|
---|
788 | vboxPciDeleteGlobals(pGlobals);
|
---|
789 | }
|
---|
790 |
|
---|
791 | return rc;
|
---|
792 | }
|
---|
793 |
|
---|
794 | void vboxPciShutdown(PVBOXRAWPCIGLOBALS pGlobals)
|
---|
795 | {
|
---|
796 | int rc = vboxPciDeleteIdc(pGlobals);
|
---|
797 | if (RT_SUCCESS(rc))
|
---|
798 | vboxPciDeleteGlobals(pGlobals);
|
---|
799 | }
|
---|
800 |
|
---|