[80641] | 1 | /* $Id: IOMR0IoPort.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
|
---|
| 2 | /** @file
|
---|
[81167] | 3 | * IOM - Host Context Ring 0, I/O ports.
|
---|
[80641] | 4 | */
|
---|
| 5 |
|
---|
| 6 | /*
|
---|
[98103] | 7 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
|
---|
[80641] | 8 | *
|
---|
[96407] | 9 | * This file is part of VirtualBox base platform packages, as
|
---|
| 10 | * available from https://www.virtualbox.org.
|
---|
| 11 | *
|
---|
| 12 | * This program is free software; you can redistribute it and/or
|
---|
| 13 | * modify it under the terms of the GNU General Public License
|
---|
| 14 | * as published by the Free Software Foundation, in version 3 of the
|
---|
| 15 | * License.
|
---|
| 16 | *
|
---|
| 17 | * This program is distributed in the hope that it will be useful, but
|
---|
| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
---|
| 20 | * General Public License for more details.
|
---|
| 21 | *
|
---|
| 22 | * You should have received a copy of the GNU General Public License
|
---|
| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
|
---|
| 24 | *
|
---|
| 25 | * SPDX-License-Identifier: GPL-3.0-only
|
---|
[80641] | 26 | */
|
---|
| 27 |
|
---|
| 28 |
|
---|
| 29 | /*********************************************************************************************************************************
|
---|
| 30 | * Header Files *
|
---|
| 31 | *********************************************************************************************************************************/
|
---|
[81383] | 32 | #define LOG_GROUP LOG_GROUP_IOM_IOPORT
|
---|
[80641] | 33 | #include <VBox/vmm/iom.h>
|
---|
| 34 | #include "IOMInternal.h"
|
---|
| 35 | #include <VBox/vmm/pdmdev.h>
|
---|
| 36 | #include <VBox/vmm/vmcc.h>
|
---|
| 37 | #include <VBox/err.h>
|
---|
| 38 | #include <VBox/log.h>
|
---|
| 39 | #include <iprt/assert.h>
|
---|
| 40 | #include <iprt/mem.h>
|
---|
| 41 | #include <iprt/memobj.h>
|
---|
| 42 | #include <iprt/process.h>
|
---|
| 43 | #include <iprt/string.h>
|
---|
| 44 |
|
---|
| 45 |
|
---|
| 46 |
|
---|
| 47 | /**
|
---|
[81167] | 48 | * Initializes the I/O port related members.
|
---|
[80641] | 49 | *
|
---|
| 50 | * @param pGVM Pointer to the global VM structure.
|
---|
| 51 | */
|
---|
[81167] | 52 | void iomR0IoPortInitPerVMData(PGVM pGVM)
|
---|
[80641] | 53 | {
|
---|
| 54 | pGVM->iomr0.s.hIoPortMapObj = NIL_RTR0MEMOBJ;
|
---|
| 55 | pGVM->iomr0.s.hIoPortMemObj = NIL_RTR0MEMOBJ;
|
---|
| 56 | #ifdef VBOX_WITH_STATISTICS
|
---|
| 57 | pGVM->iomr0.s.hIoPortStatsMapObj = NIL_RTR0MEMOBJ;
|
---|
| 58 | pGVM->iomr0.s.hIoPortStatsMemObj = NIL_RTR0MEMOBJ;
|
---|
| 59 | #endif
|
---|
| 60 | }
|
---|
| 61 |
|
---|
| 62 |
|
---|
| 63 | /**
|
---|
[81167] | 64 | * Cleans up I/O port related resources.
|
---|
[80641] | 65 | */
|
---|
[81167] | 66 | void iomR0IoPortCleanupVM(PGVM pGVM)
|
---|
[80641] | 67 | {
|
---|
| 68 | RTR0MemObjFree(pGVM->iomr0.s.hIoPortMapObj, true /*fFreeMappings*/);
|
---|
| 69 | pGVM->iomr0.s.hIoPortMapObj = NIL_RTR0MEMOBJ;
|
---|
| 70 | RTR0MemObjFree(pGVM->iomr0.s.hIoPortMemObj, true /*fFreeMappings*/);
|
---|
| 71 | pGVM->iomr0.s.hIoPortMemObj = NIL_RTR0MEMOBJ;
|
---|
| 72 | #ifdef VBOX_WITH_STATISTICS
|
---|
| 73 | RTR0MemObjFree(pGVM->iomr0.s.hIoPortStatsMapObj, true /*fFreeMappings*/);
|
---|
| 74 | pGVM->iomr0.s.hIoPortStatsMapObj = NIL_RTR0MEMOBJ;
|
---|
| 75 | RTR0MemObjFree(pGVM->iomr0.s.hIoPortStatsMemObj, true /*fFreeMappings*/);
|
---|
| 76 | pGVM->iomr0.s.hIoPortStatsMemObj = NIL_RTR0MEMOBJ;
|
---|
| 77 | #endif
|
---|
| 78 | }
|
---|
| 79 |
|
---|
| 80 |
|
---|
| 81 | /**
|
---|
| 82 | * Implements PDMDEVHLPR0::pfnIoPortSetUpContext.
|
---|
| 83 | *
|
---|
| 84 | * @param pGVM The global (ring-0) VM structure.
|
---|
| 85 | * @param pDevIns The device instance.
|
---|
| 86 | * @param hIoPorts The I/O port handle (already registered in ring-3).
|
---|
| 87 | * @param pfnOut The OUT handler callback, optional.
|
---|
| 88 | * @param pfnIn The IN handler callback, optional.
|
---|
| 89 | * @param pfnOutStr The REP OUTS handler callback, optional.
|
---|
| 90 | * @param pfnInStr The REP INS handler callback, optional.
|
---|
| 91 | * @param pvUser User argument for the callbacks.
|
---|
| 92 | * @thread EMT(0)
|
---|
| 93 | * @note Only callable at VM creation time.
|
---|
| 94 | */
|
---|
| 95 | VMMR0_INT_DECL(int) IOMR0IoPortSetUpContext(PGVM pGVM, PPDMDEVINS pDevIns, IOMIOPORTHANDLE hIoPorts,
|
---|
[80960] | 96 | PFNIOMIOPORTNEWOUT pfnOut, PFNIOMIOPORTNEWIN pfnIn,
|
---|
| 97 | PFNIOMIOPORTNEWOUTSTRING pfnOutStr, PFNIOMIOPORTNEWINSTRING pfnInStr, void *pvUser)
|
---|
[80641] | 98 | {
|
---|
| 99 | /*
|
---|
| 100 | * Validate input and state.
|
---|
| 101 | */
|
---|
| 102 | VM_ASSERT_EMT0_RETURN(pGVM, VERR_VM_THREAD_NOT_EMT);
|
---|
| 103 | VM_ASSERT_STATE_RETURN(pGVM, VMSTATE_CREATING, VERR_VM_INVALID_VM_STATE);
|
---|
| 104 | AssertReturn(hIoPorts < pGVM->iomr0.s.cIoPortAlloc, VERR_IOM_INVALID_IOPORT_HANDLE);
|
---|
| 105 | AssertReturn(hIoPorts < pGVM->iom.s.cIoPortRegs, VERR_IOM_INVALID_IOPORT_HANDLE);
|
---|
| 106 | AssertPtrReturn(pDevIns, VERR_INVALID_HANDLE);
|
---|
[93554] | 107 | AssertReturn(pDevIns->pDevInsForR3 != NIL_RTR3PTR && !(pDevIns->pDevInsForR3 & HOST_PAGE_OFFSET_MASK), VERR_INVALID_PARAMETER);
|
---|
[80641] | 108 | AssertReturn(pGVM->iomr0.s.paIoPortRing3Regs[hIoPorts].pDevIns == pDevIns->pDevInsForR3, VERR_IOM_INVALID_IOPORT_HANDLE);
|
---|
| 109 | AssertReturn(pGVM->iomr0.s.paIoPortRegs[hIoPorts].pDevIns == NULL, VERR_WRONG_ORDER);
|
---|
[81197] | 110 | Assert(pGVM->iomr0.s.paIoPortRegs[hIoPorts].idxSelf == hIoPorts);
|
---|
[80641] | 111 |
|
---|
| 112 | AssertReturn(pfnOut || pfnIn || pfnOutStr || pfnInStr, VERR_INVALID_PARAMETER);
|
---|
| 113 | AssertPtrNullReturn(pfnOut, VERR_INVALID_POINTER);
|
---|
| 114 | AssertPtrNullReturn(pfnIn, VERR_INVALID_POINTER);
|
---|
| 115 | AssertPtrNullReturn(pfnOutStr, VERR_INVALID_POINTER);
|
---|
| 116 | AssertPtrNullReturn(pfnInStr, VERR_INVALID_POINTER);
|
---|
| 117 |
|
---|
[81136] | 118 | uint16_t const fFlags = pGVM->iomr0.s.paIoPortRing3Regs[hIoPorts].fFlags;
|
---|
[80641] | 119 | RTIOPORT const cPorts = pGVM->iomr0.s.paIoPortRing3Regs[hIoPorts].cPorts;
|
---|
| 120 | AssertMsgReturn(cPorts > 0 && cPorts <= _8K, ("cPorts=%s\n", cPorts), VERR_IOM_INVALID_IOPORT_HANDLE);
|
---|
| 121 |
|
---|
| 122 | /*
|
---|
| 123 | * Do the job.
|
---|
| 124 | */
|
---|
| 125 | pGVM->iomr0.s.paIoPortRegs[hIoPorts].pvUser = pvUser;
|
---|
| 126 | pGVM->iomr0.s.paIoPortRegs[hIoPorts].pDevIns = pDevIns;
|
---|
| 127 | pGVM->iomr0.s.paIoPortRegs[hIoPorts].pfnOutCallback = pfnOut;
|
---|
| 128 | pGVM->iomr0.s.paIoPortRegs[hIoPorts].pfnInCallback = pfnIn;
|
---|
| 129 | pGVM->iomr0.s.paIoPortRegs[hIoPorts].pfnOutStrCallback = pfnOutStr;
|
---|
| 130 | pGVM->iomr0.s.paIoPortRegs[hIoPorts].pfnInStrCallback = pfnInStr;
|
---|
| 131 | pGVM->iomr0.s.paIoPortRegs[hIoPorts].cPorts = cPorts;
|
---|
[81136] | 132 | pGVM->iomr0.s.paIoPortRegs[hIoPorts].fFlags = fFlags;
|
---|
[80645] | 133 | #ifdef VBOX_WITH_STATISTICS
|
---|
[80641] | 134 | uint16_t const idxStats = pGVM->iomr0.s.paIoPortRing3Regs[hIoPorts].idxStats;
|
---|
| 135 | pGVM->iomr0.s.paIoPortRegs[hIoPorts].idxStats = (uint32_t)idxStats + cPorts <= pGVM->iomr0.s.cIoPortStatsAllocation
|
---|
| 136 | ? idxStats : UINT16_MAX;
|
---|
[80644] | 137 | #else
|
---|
| 138 | pGVM->iomr0.s.paIoPortRegs[hIoPorts].idxStats = UINT16_MAX;
|
---|
| 139 | #endif
|
---|
[81056] | 140 |
|
---|
| 141 | pGVM->iomr0.s.paIoPortRing3Regs[hIoPorts].fRing0 = true;
|
---|
| 142 |
|
---|
[80641] | 143 | return VINF_SUCCESS;
|
---|
| 144 | }
|
---|
| 145 |
|
---|
| 146 |
|
---|
| 147 | /**
|
---|
| 148 | * Grows the I/O port registration (all contexts) and lookup tables.
|
---|
| 149 | *
|
---|
| 150 | * @returns VBox status code.
|
---|
| 151 | * @param pGVM The global (ring-0) VM structure.
|
---|
| 152 | * @param cReqMinEntries The minimum growth (absolute).
|
---|
| 153 | * @thread EMT(0)
|
---|
| 154 | * @note Only callable at VM creation time.
|
---|
| 155 | */
|
---|
| 156 | VMMR0_INT_DECL(int) IOMR0IoPortGrowRegistrationTables(PGVM pGVM, uint64_t cReqMinEntries)
|
---|
| 157 | {
|
---|
| 158 | /*
|
---|
| 159 | * Validate input and state.
|
---|
| 160 | */
|
---|
| 161 | VM_ASSERT_EMT0_RETURN(pGVM, VERR_VM_THREAD_NOT_EMT);
|
---|
| 162 | VM_ASSERT_STATE_RETURN(pGVM, VMSTATE_CREATING, VERR_VM_INVALID_VM_STATE);
|
---|
| 163 | AssertReturn(cReqMinEntries <= _4K, VERR_IOM_TOO_MANY_IOPORT_REGISTRATIONS);
|
---|
| 164 | uint32_t cNewEntries = (uint32_t)cReqMinEntries;
|
---|
| 165 | AssertReturn(cNewEntries >= pGVM->iom.s.cIoPortAlloc, VERR_IOM_IOPORT_IPE_1);
|
---|
| 166 | uint32_t const cOldEntries = pGVM->iomr0.s.cIoPortAlloc;
|
---|
| 167 | ASMCompilerBarrier();
|
---|
| 168 | AssertReturn(cNewEntries >= cOldEntries, VERR_IOM_IOPORT_IPE_2);
|
---|
| 169 | AssertReturn(pGVM->iom.s.cIoPortRegs >= pGVM->iomr0.s.cIoPortMax, VERR_IOM_IOPORT_IPE_3);
|
---|
| 170 |
|
---|
| 171 | /*
|
---|
| 172 | * Allocate the new tables. We use a single allocation for the three tables (ring-0,
|
---|
| 173 | * ring-3, lookup) and does a partial mapping of the result to ring-3.
|
---|
| 174 | */
|
---|
[93554] | 175 | uint32_t const cbRing0 = RT_ALIGN_32(cNewEntries * sizeof(IOMIOPORTENTRYR0), HOST_PAGE_SIZE);
|
---|
| 176 | uint32_t const cbRing3 = RT_ALIGN_32(cNewEntries * sizeof(IOMIOPORTENTRYR3), HOST_PAGE_SIZE);
|
---|
| 177 | uint32_t const cbShared = RT_ALIGN_32(cNewEntries * sizeof(IOMIOPORTLOOKUPENTRY), HOST_PAGE_SIZE);
|
---|
[80641] | 178 | uint32_t const cbNew = cbRing0 + cbRing3 + cbShared;
|
---|
| 179 |
|
---|
| 180 | /* Use the rounded up space as best we can. */
|
---|
| 181 | cNewEntries = RT_MIN(RT_MIN(cbRing0 / sizeof(IOMIOPORTENTRYR0), cbRing3 / sizeof(IOMIOPORTENTRYR3)),
|
---|
| 182 | cbShared / sizeof(IOMIOPORTLOOKUPENTRY));
|
---|
| 183 |
|
---|
| 184 | RTR0MEMOBJ hMemObj;
|
---|
| 185 | int rc = RTR0MemObjAllocPage(&hMemObj, cbNew, false /*fExecutable*/);
|
---|
| 186 | if (RT_SUCCESS(rc))
|
---|
| 187 | {
|
---|
| 188 | /*
|
---|
| 189 | * Zero and map it.
|
---|
| 190 | */
|
---|
| 191 | RT_BZERO(RTR0MemObjAddress(hMemObj), cbNew);
|
---|
| 192 |
|
---|
| 193 | RTR0MEMOBJ hMapObj;
|
---|
[93554] | 194 | rc = RTR0MemObjMapUserEx(&hMapObj, hMemObj, (RTR3PTR)-1, HOST_PAGE_SIZE, RTMEM_PROT_READ | RTMEM_PROT_WRITE,
|
---|
[80641] | 195 | RTR0ProcHandleSelf(), cbRing0, cbNew - cbRing0);
|
---|
| 196 | if (RT_SUCCESS(rc))
|
---|
| 197 | {
|
---|
| 198 | PIOMIOPORTENTRYR0 const paRing0 = (PIOMIOPORTENTRYR0)RTR0MemObjAddress(hMemObj);
|
---|
| 199 | PIOMIOPORTENTRYR3 const paRing3 = (PIOMIOPORTENTRYR3)((uintptr_t)paRing0 + cbRing0);
|
---|
| 200 | PIOMIOPORTLOOKUPENTRY const paLookup = (PIOMIOPORTLOOKUPENTRY)((uintptr_t)paRing3 + cbRing3);
|
---|
| 201 | RTR3UINTPTR const uAddrRing3 = RTR0MemObjAddressR3(hMapObj);
|
---|
| 202 |
|
---|
| 203 | /*
|
---|
| 204 | * Copy over the old info and initialize the idxSelf and idxStats members.
|
---|
| 205 | */
|
---|
| 206 | if (pGVM->iomr0.s.paIoPortRegs != NULL)
|
---|
| 207 | {
|
---|
| 208 | memcpy(paRing0, pGVM->iomr0.s.paIoPortRegs, sizeof(paRing0[0]) * cOldEntries);
|
---|
| 209 | memcpy(paRing3, pGVM->iomr0.s.paIoPortRing3Regs, sizeof(paRing3[0]) * cOldEntries);
|
---|
| 210 | memcpy(paLookup, pGVM->iomr0.s.paIoPortLookup, sizeof(paLookup[0]) * cOldEntries);
|
---|
| 211 | }
|
---|
| 212 |
|
---|
| 213 | size_t i = cbRing0 / sizeof(*paRing0);
|
---|
| 214 | while (i-- > cOldEntries)
|
---|
| 215 | {
|
---|
| 216 | paRing0[i].idxSelf = (uint16_t)i;
|
---|
| 217 | paRing0[i].idxStats = UINT16_MAX;
|
---|
[82277] | 218 | }
|
---|
| 219 | i = cbRing3 / sizeof(*paRing3);
|
---|
| 220 | while (i-- > cOldEntries)
|
---|
| 221 | {
|
---|
[80641] | 222 | paRing3[i].idxSelf = (uint16_t)i;
|
---|
| 223 | paRing3[i].idxStats = UINT16_MAX;
|
---|
| 224 | }
|
---|
| 225 |
|
---|
| 226 | /*
|
---|
| 227 | * Switch the memory handles.
|
---|
| 228 | */
|
---|
| 229 | RTR0MEMOBJ hTmp = pGVM->iomr0.s.hIoPortMapObj;
|
---|
| 230 | pGVM->iomr0.s.hIoPortMapObj = hMapObj;
|
---|
| 231 | hMapObj = hTmp;
|
---|
| 232 |
|
---|
| 233 | hTmp = pGVM->iomr0.s.hIoPortMemObj;
|
---|
| 234 | pGVM->iomr0.s.hIoPortMemObj = hMemObj;
|
---|
| 235 | hMemObj = hTmp;
|
---|
| 236 |
|
---|
| 237 | /*
|
---|
| 238 | * Update the variables.
|
---|
| 239 | */
|
---|
| 240 | pGVM->iomr0.s.paIoPortRegs = paRing0;
|
---|
| 241 | pGVM->iomr0.s.paIoPortRing3Regs = paRing3;
|
---|
| 242 | pGVM->iomr0.s.paIoPortLookup = paLookup;
|
---|
| 243 | pGVM->iom.s.paIoPortRegs = uAddrRing3;
|
---|
| 244 | pGVM->iom.s.paIoPortLookup = uAddrRing3 + cbRing3;
|
---|
| 245 | pGVM->iom.s.cIoPortAlloc = cNewEntries;
|
---|
| 246 | pGVM->iomr0.s.cIoPortAlloc = cNewEntries;
|
---|
| 247 |
|
---|
| 248 | /*
|
---|
| 249 | * Free the old allocation.
|
---|
| 250 | */
|
---|
| 251 | RTR0MemObjFree(hMapObj, true /*fFreeMappings*/);
|
---|
| 252 | }
|
---|
| 253 | RTR0MemObjFree(hMemObj, true /*fFreeMappings*/);
|
---|
| 254 | }
|
---|
| 255 |
|
---|
| 256 | return rc;
|
---|
| 257 | }
|
---|
| 258 |
|
---|
| 259 |
|
---|
| 260 | /**
|
---|
| 261 | * Grows the I/O port statistics table.
|
---|
| 262 | *
|
---|
| 263 | * @returns VBox status code.
|
---|
| 264 | * @param pGVM The global (ring-0) VM structure.
|
---|
| 265 | * @param cReqMinEntries The minimum growth (absolute).
|
---|
| 266 | * @thread EMT(0)
|
---|
| 267 | * @note Only callable at VM creation time.
|
---|
| 268 | */
|
---|
| 269 | VMMR0_INT_DECL(int) IOMR0IoPortGrowStatisticsTable(PGVM pGVM, uint64_t cReqMinEntries)
|
---|
| 270 | {
|
---|
| 271 | /*
|
---|
| 272 | * Validate input and state.
|
---|
| 273 | */
|
---|
| 274 | VM_ASSERT_EMT0_RETURN(pGVM, VERR_VM_THREAD_NOT_EMT);
|
---|
| 275 | VM_ASSERT_STATE_RETURN(pGVM, VMSTATE_CREATING, VERR_VM_INVALID_VM_STATE);
|
---|
| 276 | AssertReturn(cReqMinEntries <= _64K, VERR_IOM_TOO_MANY_IOPORT_REGISTRATIONS);
|
---|
| 277 | uint32_t cNewEntries = (uint32_t)cReqMinEntries;
|
---|
[80644] | 278 | #ifdef VBOX_WITH_STATISTICS
|
---|
[80641] | 279 | uint32_t const cOldEntries = pGVM->iomr0.s.cIoPortStatsAllocation;
|
---|
| 280 | ASMCompilerBarrier();
|
---|
[80644] | 281 | #else
|
---|
| 282 | uint32_t const cOldEntries = 0;
|
---|
| 283 | #endif
|
---|
[80641] | 284 | AssertReturn(cNewEntries > cOldEntries, VERR_IOM_IOPORT_IPE_1);
|
---|
| 285 | AssertReturn(pGVM->iom.s.cIoPortStatsAllocation == cOldEntries, VERR_IOM_IOPORT_IPE_1);
|
---|
| 286 | AssertReturn(pGVM->iom.s.cIoPortStats <= cOldEntries, VERR_IOM_IOPORT_IPE_2);
|
---|
[81335] | 287 | #ifdef VBOX_WITH_STATISTICS
|
---|
[81333] | 288 | AssertReturn(!pGVM->iomr0.s.fIoPortStatsFrozen, VERR_WRONG_ORDER);
|
---|
[81335] | 289 | #endif
|
---|
[80641] | 290 |
|
---|
| 291 | /*
|
---|
| 292 | * Allocate a new table, zero it and map it.
|
---|
| 293 | */
|
---|
| 294 | #ifndef VBOX_WITH_STATISTICS
|
---|
| 295 | AssertFailedReturn(VERR_NOT_SUPPORTED);
|
---|
| 296 | #else
|
---|
[93554] | 297 | uint32_t const cbNew = RT_ALIGN_32(cNewEntries * sizeof(IOMIOPORTSTATSENTRY), HOST_PAGE_SIZE);
|
---|
[80641] | 298 | cNewEntries = cbNew / sizeof(IOMIOPORTSTATSENTRY);
|
---|
| 299 |
|
---|
| 300 | RTR0MEMOBJ hMemObj;
|
---|
| 301 | int rc = RTR0MemObjAllocPage(&hMemObj, cbNew, false /*fExecutable*/);
|
---|
| 302 | if (RT_SUCCESS(rc))
|
---|
| 303 | {
|
---|
| 304 | RT_BZERO(RTR0MemObjAddress(hMemObj), cbNew);
|
---|
| 305 |
|
---|
| 306 | RTR0MEMOBJ hMapObj;
|
---|
[93554] | 307 | rc = RTR0MemObjMapUser(&hMapObj, hMemObj, (RTR3PTR)-1, HOST_PAGE_SIZE,
|
---|
| 308 | RTMEM_PROT_READ | RTMEM_PROT_WRITE, RTR0ProcHandleSelf());
|
---|
[80641] | 309 | if (RT_SUCCESS(rc))
|
---|
| 310 | {
|
---|
| 311 | PIOMIOPORTSTATSENTRY pIoPortStats = (PIOMIOPORTSTATSENTRY)RTR0MemObjAddress(hMemObj);
|
---|
| 312 |
|
---|
| 313 | /*
|
---|
| 314 | * Anything to copy over and free up?
|
---|
| 315 | */
|
---|
| 316 | if (pGVM->iomr0.s.paIoPortStats)
|
---|
| 317 | memcpy(pIoPortStats, pGVM->iomr0.s.paIoPortStats, cOldEntries * sizeof(IOMIOPORTSTATSENTRY));
|
---|
| 318 |
|
---|
| 319 | /*
|
---|
| 320 | * Switch the memory handles.
|
---|
| 321 | */
|
---|
| 322 | RTR0MEMOBJ hTmp = pGVM->iomr0.s.hIoPortStatsMapObj;
|
---|
| 323 | pGVM->iomr0.s.hIoPortStatsMapObj = hMapObj;
|
---|
| 324 | hMapObj = hTmp;
|
---|
| 325 |
|
---|
| 326 | hTmp = pGVM->iomr0.s.hIoPortStatsMemObj;
|
---|
| 327 | pGVM->iomr0.s.hIoPortStatsMemObj = hMemObj;
|
---|
| 328 | hMemObj = hTmp;
|
---|
| 329 |
|
---|
| 330 | /*
|
---|
| 331 | * Update the variables.
|
---|
| 332 | */
|
---|
| 333 | pGVM->iomr0.s.paIoPortStats = pIoPortStats;
|
---|
| 334 | pGVM->iom.s.paIoPortStats = RTR0MemObjAddressR3(pGVM->iomr0.s.hIoPortStatsMapObj);
|
---|
| 335 | pGVM->iom.s.cIoPortStatsAllocation = cNewEntries;
|
---|
| 336 | pGVM->iomr0.s.cIoPortStatsAllocation = cNewEntries;
|
---|
| 337 |
|
---|
| 338 | /*
|
---|
| 339 | * Free the old allocation.
|
---|
| 340 | */
|
---|
| 341 | RTR0MemObjFree(hMapObj, true /*fFreeMappings*/);
|
---|
| 342 | }
|
---|
| 343 | RTR0MemObjFree(hMemObj, true /*fFreeMappings*/);
|
---|
| 344 | }
|
---|
| 345 | return rc;
|
---|
| 346 | #endif /* VBOX_WITH_STATISTICS */
|
---|
| 347 | }
|
---|
| 348 |
|
---|
[81333] | 349 | /**
|
---|
| 350 | * Called after all devices has been instantiated to copy over the statistics
|
---|
| 351 | * indices to the ring-0 I/O port registration table.
|
---|
| 352 | *
|
---|
| 353 | * This simplifies keeping statistics for I/O port ranges that are ring-3 only.
|
---|
| 354 | *
|
---|
| 355 | * After this call, IOMR0IoPortGrowStatisticsTable() will stop working.
|
---|
| 356 | *
|
---|
| 357 | * @returns VBox status code.
|
---|
| 358 | * @param pGVM The global (ring-0) VM structure.
|
---|
| 359 | * @thread EMT(0)
|
---|
| 360 | * @note Only callable at VM creation time.
|
---|
| 361 | */
|
---|
| 362 | VMMR0_INT_DECL(int) IOMR0IoPortSyncStatisticsIndices(PGVM pGVM)
|
---|
| 363 | {
|
---|
| 364 | VM_ASSERT_EMT0_RETURN(pGVM, VERR_VM_THREAD_NOT_EMT);
|
---|
| 365 | VM_ASSERT_STATE_RETURN(pGVM, VMSTATE_CREATING, VERR_VM_INVALID_VM_STATE);
|
---|
| 366 |
|
---|
| 367 | #ifdef VBOX_WITH_STATISTICS
|
---|
| 368 | /*
|
---|
| 369 | * First, freeze the statistics array:
|
---|
| 370 | */
|
---|
| 371 | pGVM->iomr0.s.fIoPortStatsFrozen = true;
|
---|
| 372 |
|
---|
| 373 | /*
|
---|
| 374 | * Second, synchronize the indices:
|
---|
| 375 | */
|
---|
| 376 | uint32_t const cRegs = RT_MIN(pGVM->iom.s.cIoPortRegs, pGVM->iomr0.s.cIoPortAlloc);
|
---|
| 377 | uint32_t const cStatsAlloc = pGVM->iomr0.s.cIoPortStatsAllocation;
|
---|
| 378 | PIOMIOPORTENTRYR0 paIoPortRegs = pGVM->iomr0.s.paIoPortRegs;
|
---|
| 379 | IOMIOPORTENTRYR3 const *paIoPortRegsR3 = pGVM->iomr0.s.paIoPortRing3Regs;
|
---|
| 380 | AssertReturn((paIoPortRegs && paIoPortRegsR3) || cRegs == 0, VERR_IOM_IOPORT_IPE_3);
|
---|
| 381 |
|
---|
| 382 | for (uint32_t i = 0 ; i < cRegs; i++)
|
---|
| 383 | {
|
---|
| 384 | uint16_t idxStats = paIoPortRegsR3[i].idxStats;
|
---|
| 385 | paIoPortRegs[i].idxStats = idxStats < cStatsAlloc ? idxStats : UINT16_MAX;
|
---|
| 386 | }
|
---|
| 387 |
|
---|
| 388 | #else
|
---|
| 389 | RT_NOREF(pGVM);
|
---|
| 390 | #endif
|
---|
| 391 | return VINF_SUCCESS;
|
---|
| 392 | }
|
---|
| 393 |
|
---|