/* $Id: VMMDevTesting.cpp $ */ /** @file * VMMDev - Testing Extensions. * * To enable: VBoxManage setextradata vmname VBoxInternal/Devices/VMMDev/0/Config/TestingEnabled 1 */ /* * Copyright (C) 2010-2022 Oracle and/or its affiliates. * * This file is part of VirtualBox base platform packages, as * available from https://www.virtualbox.org. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation, in version 3 of the * License. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see . * * SPDX-License-Identifier: GPL-3.0-only */ /********************************************************************************************************************************* * Header Files * *********************************************************************************************************************************/ #define LOG_GROUP LOG_GROUP_DEV_VMM #include #include #include #include #include #include #include #include #include #ifdef IN_RING3 # define USING_VMM_COMMON_DEFS /* HACK ALERT! We ONLY want the EMT thread handles, so the common defs doesn't matter. */ # include #endif #include #include "VMMDevState.h" #include "VMMDevTesting.h" #ifndef VBOX_WITHOUT_TESTING_FEATURES #define VMMDEV_TESTING_OUTPUT(a) \ do \ { \ LogAlways(a);\ LogRel(a);\ } while (0) /** * @callback_method_impl{FNIOMMMIONEWWRITE} */ static DECLCALLBACK(VBOXSTRICTRC) vmmdevTestingMmioWrite(PPDMDEVINS pDevIns, void *pvUser, RTGCPHYS off, void const *pv, unsigned cb) { RT_NOREF_PV(pvUser); switch (off) { case VMMDEV_TESTING_MMIO_OFF_NOP_R3: #ifndef IN_RING3 return VINF_IOM_R3_MMIO_WRITE; #endif case VMMDEV_TESTING_MMIO_OFF_NOP: return VINF_SUCCESS; default: { /* * Readback register (64 bytes wide). */ if ( ( off >= VMMDEV_TESTING_MMIO_OFF_READBACK && off + cb <= VMMDEV_TESTING_MMIO_OFF_READBACK + VMMDEV_TESTING_READBACK_SIZE) #ifndef IN_RING3 || ( off >= VMMDEV_TESTING_MMIO_OFF_READBACK_R3 && off + cb <= VMMDEV_TESTING_MMIO_OFF_READBACK_R3 + VMMDEV_TESTING_READBACK_SIZE) #endif ) { PVMMDEV pThis = PDMDEVINS_2_DATA(pDevIns, PVMMDEV); off &= VMMDEV_TESTING_READBACK_SIZE - 1; switch (cb) { case 8: *(uint64_t *)&pThis->TestingData.abReadBack[off] = *(uint64_t const *)pv; break; case 4: *(uint32_t *)&pThis->TestingData.abReadBack[off] = *(uint32_t const *)pv; break; case 2: *(uint16_t *)&pThis->TestingData.abReadBack[off] = *(uint16_t const *)pv; break; case 1: *(uint8_t *)&pThis->TestingData.abReadBack[off] = *(uint8_t const *)pv; break; default: memcpy(&pThis->TestingData.abReadBack[off], pv, cb); break; } return VINF_SUCCESS; } #ifndef IN_RING3 if ( off >= VMMDEV_TESTING_MMIO_OFF_READBACK_R3 && off + cb <= VMMDEV_TESTING_MMIO_OFF_READBACK_R3 + 64) return VINF_IOM_R3_MMIO_WRITE; #endif break; } /* * Odd NOP accesses. */ case VMMDEV_TESTING_MMIO_OFF_NOP_R3 + 1: case VMMDEV_TESTING_MMIO_OFF_NOP_R3 + 2: case VMMDEV_TESTING_MMIO_OFF_NOP_R3 + 3: case VMMDEV_TESTING_MMIO_OFF_NOP_R3 + 4: case VMMDEV_TESTING_MMIO_OFF_NOP_R3 + 5: case VMMDEV_TESTING_MMIO_OFF_NOP_R3 + 6: case VMMDEV_TESTING_MMIO_OFF_NOP_R3 + 7: #ifndef IN_RING3 return VINF_IOM_R3_MMIO_WRITE; #endif case VMMDEV_TESTING_MMIO_OFF_NOP + 1: case VMMDEV_TESTING_MMIO_OFF_NOP + 2: case VMMDEV_TESTING_MMIO_OFF_NOP + 3: case VMMDEV_TESTING_MMIO_OFF_NOP + 4: case VMMDEV_TESTING_MMIO_OFF_NOP + 5: case VMMDEV_TESTING_MMIO_OFF_NOP + 6: case VMMDEV_TESTING_MMIO_OFF_NOP + 7: return VINF_SUCCESS; } return VINF_SUCCESS; } /** * @callback_method_impl{FNIOMMMIONEWREAD} */ static DECLCALLBACK(VBOXSTRICTRC) vmmdevTestingMmioRead(PPDMDEVINS pDevIns, void *pvUser, RTGCPHYS off, void *pv, unsigned cb) { RT_NOREF_PV(pvUser); switch (off) { case VMMDEV_TESTING_MMIO_OFF_NOP_R3: #ifndef IN_RING3 return VINF_IOM_R3_MMIO_READ; #endif /* fall thru. */ case VMMDEV_TESTING_MMIO_OFF_NOP: switch (cb) { case 8: *(uint64_t *)pv = VMMDEV_TESTING_NOP_RET | ((uint64_t)VMMDEV_TESTING_NOP_RET << 32); break; case 4: *(uint32_t *)pv = VMMDEV_TESTING_NOP_RET; break; case 2: *(uint16_t *)pv = RT_LO_U16(VMMDEV_TESTING_NOP_RET); break; case 1: *(uint8_t *)pv = (uint8_t)(VMMDEV_TESTING_NOP_RET & UINT8_MAX); break; default: AssertFailed(); return VERR_INTERNAL_ERROR_5; } return VINF_SUCCESS; default: { /* * Readback register (64 bytes wide). */ if ( ( off >= VMMDEV_TESTING_MMIO_OFF_READBACK && off + cb <= VMMDEV_TESTING_MMIO_OFF_READBACK + 64) #ifndef IN_RING3 || ( off >= VMMDEV_TESTING_MMIO_OFF_READBACK_R3 && off + cb <= VMMDEV_TESTING_MMIO_OFF_READBACK_R3 + 64) #endif ) { PVMMDEV pThis = PDMDEVINS_2_DATA(pDevIns, PVMMDEV); off &= 0x3f; switch (cb) { case 8: *(uint64_t *)pv = *(uint64_t const *)&pThis->TestingData.abReadBack[off]; break; case 4: *(uint32_t *)pv = *(uint32_t const *)&pThis->TestingData.abReadBack[off]; break; case 2: *(uint16_t *)pv = *(uint16_t const *)&pThis->TestingData.abReadBack[off]; break; case 1: *(uint8_t *)pv = *(uint8_t const *)&pThis->TestingData.abReadBack[off]; break; default: memcpy(pv, &pThis->TestingData.abReadBack[off], cb); break; } return VINF_SUCCESS; } #ifndef IN_RING3 if ( off >= VMMDEV_TESTING_MMIO_OFF_READBACK_R3 && off + cb <= VMMDEV_TESTING_MMIO_OFF_READBACK_R3 + 64) return VINF_IOM_R3_MMIO_READ; #endif break; } /* * Odd NOP accesses (for 16-bit code mainly). */ case VMMDEV_TESTING_MMIO_OFF_NOP_R3 + 1: case VMMDEV_TESTING_MMIO_OFF_NOP_R3 + 2: case VMMDEV_TESTING_MMIO_OFF_NOP_R3 + 3: case VMMDEV_TESTING_MMIO_OFF_NOP_R3 + 4: case VMMDEV_TESTING_MMIO_OFF_NOP_R3 + 5: case VMMDEV_TESTING_MMIO_OFF_NOP_R3 + 6: case VMMDEV_TESTING_MMIO_OFF_NOP_R3 + 7: #ifndef IN_RING3 return VINF_IOM_R3_MMIO_READ; #endif case VMMDEV_TESTING_MMIO_OFF_NOP + 1: case VMMDEV_TESTING_MMIO_OFF_NOP + 2: case VMMDEV_TESTING_MMIO_OFF_NOP + 3: case VMMDEV_TESTING_MMIO_OFF_NOP + 4: case VMMDEV_TESTING_MMIO_OFF_NOP + 5: case VMMDEV_TESTING_MMIO_OFF_NOP + 6: case VMMDEV_TESTING_MMIO_OFF_NOP + 7: { static uint8_t const s_abNopValue[8] = { VMMDEV_TESTING_NOP_RET & 0xff, (VMMDEV_TESTING_NOP_RET >> 8) & 0xff, (VMMDEV_TESTING_NOP_RET >> 16) & 0xff, (VMMDEV_TESTING_NOP_RET >> 24) & 0xff, VMMDEV_TESTING_NOP_RET & 0xff, (VMMDEV_TESTING_NOP_RET >> 8) & 0xff, (VMMDEV_TESTING_NOP_RET >> 16) & 0xff, (VMMDEV_TESTING_NOP_RET >> 24) & 0xff, }; memset(pv, 0xff, cb); memcpy(pv, &s_abNopValue[off & 7], RT_MIN(8 - (off & 7), cb)); return VINF_SUCCESS; } } return VINF_IOM_MMIO_UNUSED_FF; } #ifdef IN_RING3 /** * Executes the VMMDEV_TESTING_CMD_VALUE_REG command when the data is ready. * * @param pDevIns The PDM device instance. * @param pThis The instance VMMDev data. */ static void vmmdevTestingCmdExec_ValueReg(PPDMDEVINS pDevIns, PVMMDEV pThis) { char *pszRegNm = strchr(pThis->TestingData.String.sz, ':'); if (pszRegNm) { *pszRegNm++ = '\0'; pszRegNm = RTStrStrip(pszRegNm); } char *pszValueNm = RTStrStrip(pThis->TestingData.String.sz); size_t const cchValueNm = strlen(pszValueNm); if (cchValueNm && pszRegNm && *pszRegNm) { VMCPUID idCpu = PDMDevHlpGetCurrentCpuId(pDevIns); uint64_t u64Value; int rc2 = PDMDevHlpDBGFRegNmQueryU64(pDevIns, idCpu, pszRegNm, &u64Value); if (RT_SUCCESS(rc2)) { const char *pszWarn = rc2 == VINF_DBGF_TRUNCATED_REGISTER ? " truncated" : ""; #if 1 /*!RTTestValue format*/ char szFormat[128], szValue[128]; RTStrPrintf(szFormat, sizeof(szFormat), "%%VR{%s}", pszRegNm); rc2 = PDMDevHlpDBGFRegPrintf(pDevIns, idCpu, szValue, sizeof(szValue), szFormat); if (RT_SUCCESS(rc2)) VMMDEV_TESTING_OUTPUT(("testing: VALUE '%s'%*s: %16s {reg=%s}%s\n", pszValueNm, (ssize_t)cchValueNm - 12 > 48 ? 0 : 48 - ((ssize_t)cchValueNm - 12), "", szValue, pszRegNm, pszWarn)); else #endif VMMDEV_TESTING_OUTPUT(("testing: VALUE '%s'%*s: %'9llu (%#llx) [0] {reg=%s}%s\n", pszValueNm, (ssize_t)cchValueNm - 12 > 48 ? 0 : 48 - ((ssize_t)cchValueNm - 12), "", u64Value, u64Value, pszRegNm, pszWarn)); } else VMMDEV_TESTING_OUTPUT(("testing: error querying register '%s' for value '%s': %Rrc\n", pszRegNm, pszValueNm, rc2)); } else VMMDEV_TESTING_OUTPUT(("testing: malformed register value '%s'/'%s'\n", pszValueNm, pszRegNm)); } #endif /* IN_RING3 */ /** * @callback_method_impl{FNIOMIOPORTNEWOUT} */ static DECLCALLBACK(VBOXSTRICTRC) vmmdevTestingIoWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t u32, unsigned cb) { PVMMDEV pThis = PDMDEVINS_2_DATA(pDevIns, PVMMDEV); #ifdef IN_RING3 PVMMDEVCC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVMMDEVCC); #endif RT_NOREF_PV(pvUser); switch (offPort) { /* * The NOP I/O ports are used for performance measurements. */ case VMMDEV_TESTING_IOPORT_NOP - VMMDEV_TESTING_IOPORT_BASE: switch (cb) { case 4: case 2: case 1: break; default: AssertFailed(); return VERR_INTERNAL_ERROR_2; } return VINF_SUCCESS; case VMMDEV_TESTING_IOPORT_NOP_R3 - VMMDEV_TESTING_IOPORT_BASE: switch (cb) { case 4: case 2: case 1: #ifndef IN_RING3 return VINF_IOM_R3_IOPORT_WRITE; #else return VINF_SUCCESS; #endif default: AssertFailed(); return VERR_INTERNAL_ERROR_2; } /* The timestamp I/O ports are read-only. */ case VMMDEV_TESTING_IOPORT_TS_LOW - VMMDEV_TESTING_IOPORT_BASE: case VMMDEV_TESTING_IOPORT_TS_HIGH - VMMDEV_TESTING_IOPORT_BASE: break; /* * The command port (DWORD and WORD write only). * (We have to allow WORD writes for 286, 186 and 8086 execution modes.) */ case VMMDEV_TESTING_IOPORT_CMD - VMMDEV_TESTING_IOPORT_BASE: if (cb == 2) { u32 |= VMMDEV_TESTING_CMD_MAGIC_HI_WORD; cb = 4; } if (cb == 4) { pThis->u32TestingCmd = u32; pThis->offTestingData = 0; pThis->cbReadableTestingData = 0; RT_ZERO(pThis->TestingData); return VINF_SUCCESS; } break; /* * The data port. Used of providing data for a command. */ case VMMDEV_TESTING_IOPORT_DATA - VMMDEV_TESTING_IOPORT_BASE: { uint32_t uCmd = pThis->u32TestingCmd; uint32_t off = pThis->offTestingData; switch (uCmd) { case VMMDEV_TESTING_CMD_INIT: case VMMDEV_TESTING_CMD_SUB_NEW: case VMMDEV_TESTING_CMD_FAILED: case VMMDEV_TESTING_CMD_SKIPPED: case VMMDEV_TESTING_CMD_PRINT: if ( off < sizeof(pThis->TestingData.String.sz) - 1 && cb == 1) { if (u32) { pThis->TestingData.String.sz[off] = u32; pThis->offTestingData = off + 1; } else { #ifdef IN_RING3 pThis->TestingData.String.sz[off] = '\0'; switch (uCmd) { case VMMDEV_TESTING_CMD_INIT: VMMDEV_TESTING_OUTPUT(("testing: INIT '%s'\n", pThis->TestingData.String.sz)); if (pThisCC->hTestingTest != NIL_RTTEST) { RTTestChangeName(pThisCC->hTestingTest, pThis->TestingData.String.sz); RTTestBanner(pThisCC->hTestingTest); } break; case VMMDEV_TESTING_CMD_SUB_NEW: VMMDEV_TESTING_OUTPUT(("testing: SUB_NEW '%s'\n", pThis->TestingData.String.sz)); if (pThisCC->hTestingTest != NIL_RTTEST) RTTestSub(pThisCC->hTestingTest, pThis->TestingData.String.sz); break; case VMMDEV_TESTING_CMD_FAILED: if (pThisCC->hTestingTest != NIL_RTTEST) RTTestFailed(pThisCC->hTestingTest, "%s", pThis->TestingData.String.sz); VMMDEV_TESTING_OUTPUT(("testing: FAILED '%s'\n", pThis->TestingData.String.sz)); break; case VMMDEV_TESTING_CMD_SKIPPED: if (pThisCC->hTestingTest != NIL_RTTEST) { if (off) RTTestSkipped(pThisCC->hTestingTest, "%s", pThis->TestingData.String.sz); else RTTestSkipped(pThisCC->hTestingTest, NULL); } VMMDEV_TESTING_OUTPUT(("testing: SKIPPED '%s'\n", pThis->TestingData.String.sz)); break; case VMMDEV_TESTING_CMD_PRINT: if (pThisCC->hTestingTest != NIL_RTTEST && off) RTTestPrintf(pThisCC->hTestingTest, RTTESTLVL_ALWAYS, "%s", pThis->TestingData.String.sz); VMMDEV_TESTING_OUTPUT(("testing: '%s'\n", pThis->TestingData.String.sz)); break; } #else return VINF_IOM_R3_IOPORT_WRITE; #endif } return VINF_SUCCESS; } break; case VMMDEV_TESTING_CMD_TERM: case VMMDEV_TESTING_CMD_SUB_DONE: if (cb == 2) { if (off == 0) { pThis->TestingData.Error.c = u32; pThis->offTestingData = 2; break; } if (off == 2) { u32 <<= 16; u32 |= pThis->TestingData.Error.c & UINT16_MAX; cb = 4; off = 0; } else break; } if ( off == 0 && cb == 4) { #ifdef IN_RING3 pThis->TestingData.Error.c = u32; if (uCmd == VMMDEV_TESTING_CMD_TERM) { if (pThisCC->hTestingTest != NIL_RTTEST) { while (RTTestErrorCount(pThisCC->hTestingTest) < u32) RTTestErrorInc(pThisCC->hTestingTest); /* A bit stupid, but does the trick. */ RTTestSubDone(pThisCC->hTestingTest); RTTestSummaryAndDestroy(pThisCC->hTestingTest); pThisCC->hTestingTest = NIL_RTTEST; } VMMDEV_TESTING_OUTPUT(("testing: TERM - %u errors\n", u32)); } else { if (pThisCC->hTestingTest != NIL_RTTEST) { while (RTTestSubErrorCount(pThisCC->hTestingTest) < u32) RTTestErrorInc(pThisCC->hTestingTest); /* A bit stupid, but does the trick. */ RTTestSubDone(pThisCC->hTestingTest); } VMMDEV_TESTING_OUTPUT(("testing: SUB_DONE - %u errors\n", u32)); } return VINF_SUCCESS; #else return VINF_IOM_R3_IOPORT_WRITE; #endif } break; case VMMDEV_TESTING_CMD_VALUE: if (cb == 4) { if (off == 0) pThis->TestingData.Value.u64Value.s.Lo = u32; else if (off == 4) pThis->TestingData.Value.u64Value.s.Hi = u32; else if (off == 8) pThis->TestingData.Value.u32Unit = u32; else break; pThis->offTestingData = off + 4; return VINF_SUCCESS; } if (cb == 2) { if (off == 0) pThis->TestingData.Value.u64Value.Words.w0 = (uint16_t)u32; else if (off == 2) pThis->TestingData.Value.u64Value.Words.w1 = (uint16_t)u32; else if (off == 4) pThis->TestingData.Value.u64Value.Words.w2 = (uint16_t)u32; else if (off == 6) pThis->TestingData.Value.u64Value.Words.w3 = (uint16_t)u32; else if (off == 8) pThis->TestingData.Value.u32Unit = (uint16_t)u32; else if (off == 10) pThis->TestingData.Value.u32Unit |= u32 << 16; else break; pThis->offTestingData = off + 2; return VINF_SUCCESS; } if ( off >= 12 && cb == 1 && off - 12 < sizeof(pThis->TestingData.Value.szName) - 1) { if (u32) { pThis->TestingData.Value.szName[off - 12] = u32; pThis->offTestingData = off + 1; } else { #ifdef IN_RING3 pThis->TestingData.Value.szName[off - 12] = '\0'; RTTESTUNIT enmUnit = (RTTESTUNIT)pThis->TestingData.Value.u32Unit; if (enmUnit <= RTTESTUNIT_INVALID || enmUnit >= RTTESTUNIT_END) { VMMDEV_TESTING_OUTPUT(("Invalid log value unit %#x\n", pThis->TestingData.Value.u32Unit)); enmUnit = RTTESTUNIT_NONE; } if (pThisCC->hTestingTest != NIL_RTTEST) RTTestValue(pThisCC->hTestingTest, pThis->TestingData.Value.szName, pThis->TestingData.Value.u64Value.u, enmUnit); VMMDEV_TESTING_OUTPUT(("testing: VALUE '%s'%*s: %'9llu (%#llx) [%u]\n", pThis->TestingData.Value.szName, off - 12 > 48 ? 0 : 48 - (off - 12), "", pThis->TestingData.Value.u64Value.u, pThis->TestingData.Value.u64Value.u, pThis->TestingData.Value.u32Unit)); #else return VINF_IOM_R3_IOPORT_WRITE; #endif } return VINF_SUCCESS; } break; /* * RTTestValue with the output from DBGFR3RegNmQuery. */ case VMMDEV_TESTING_CMD_VALUE_REG: { if ( off < sizeof(pThis->TestingData.String.sz) - 1 && cb == 1) { pThis->TestingData.String.sz[off] = u32; if (u32) pThis->offTestingData = off + 1; else #ifdef IN_RING3 vmmdevTestingCmdExec_ValueReg(pDevIns, pThis); #else return VINF_IOM_R3_IOPORT_WRITE; #endif return VINF_SUCCESS; } break; } /* * Query configuration. */ case VMMDEV_TESTING_CMD_QUERY_CFG: { switch (u32) { case VMMDEV_TESTING_CFG_DWORD0: case VMMDEV_TESTING_CFG_DWORD1: case VMMDEV_TESTING_CFG_DWORD2: case VMMDEV_TESTING_CFG_DWORD3: case VMMDEV_TESTING_CFG_DWORD4: case VMMDEV_TESTING_CFG_DWORD5: case VMMDEV_TESTING_CFG_DWORD6: case VMMDEV_TESTING_CFG_DWORD7: case VMMDEV_TESTING_CFG_DWORD8: case VMMDEV_TESTING_CFG_DWORD9: pThis->cbReadableTestingData = sizeof(pThis->TestingData.u32); pThis->TestingData.u32 = pThis->au32TestingCfgDwords[u32 - VMMDEV_TESTING_CFG_DWORD0]; break; case VMMDEV_TESTING_CFG_IS_NEM_LINUX: case VMMDEV_TESTING_CFG_IS_NEM_WINDOWS: case VMMDEV_TESTING_CFG_IS_NEM_DARWIN: { pThis->cbReadableTestingData = sizeof(pThis->TestingData.b); #if defined(RT_OS_DARWIN) pThis->TestingData.b = u32 == VMMDEV_TESTING_CFG_IS_NEM_DARWIN && PDMDevHlpGetMainExecutionEngine(pDevIns) == VM_EXEC_ENGINE_NATIVE_API; #elif defined(RT_OS_LINUX) pThis->TestingData.b = u32 == VMMDEV_TESTING_CFG_IS_NEM_LINUX && PDMDevHlpGetMainExecutionEngine(pDevIns) == VM_EXEC_ENGINE_NATIVE_API; #elif defined(RT_OS_WINDOWS) pThis->TestingData.b = u32 == VMMDEV_TESTING_CFG_IS_NEM_WINDOWS && PDMDevHlpGetMainExecutionEngine(pDevIns) == VM_EXEC_ENGINE_NATIVE_API; #else pThis->TestingData.b = false; #endif break; } } break; } default: break; } Log(("VMMDEV_TESTING_IOPORT_CMD: bad access; cmd=%#x off=%#x cb=%#x u32=%#x\n", uCmd, off, cb, u32)); return VINF_SUCCESS; } /* * Configure the locking contention test. */ case VMMDEV_TESTING_IOPORT_LOCKED_HI - VMMDEV_TESTING_IOPORT_BASE: case VMMDEV_TESTING_IOPORT_LOCKED_LO - VMMDEV_TESTING_IOPORT_BASE: switch (cb) { case 4: { bool const fReadWriteSection = pThis->TestingLockControl.s.fReadWriteSection; int rc; #ifndef IN_RING3 if (!pThis->TestingLockControl.s.fMustSucceed) { if (!fReadWriteSection) rc = PDMDevHlpCritSectEnter(pDevIns, &pThis->CritSect, VINF_IOM_R3_IOPORT_WRITE); else rc = PDMDevHlpCritSectRwEnterExcl(pDevIns, &pThis->CritSectRw, VINF_IOM_R3_IOPORT_WRITE); if (rc != VINF_SUCCESS) return rc; } else #endif { if (!fReadWriteSection) rc = PDMDevHlpCritSectEnter(pDevIns, &pThis->CritSect, VINF_SUCCESS); else rc = PDMDevHlpCritSectRwEnterExcl(pDevIns, &pThis->CritSectRw, VINF_SUCCESS); AssertRCReturn(rc, rc); } if (offPort == VMMDEV_TESTING_IOPORT_LOCKED_LO - VMMDEV_TESTING_IOPORT_BASE) { if (pThis->TestingLockControl.au32[0] != u32) { pThis->TestingLockControl.au32[0] = u32; PDMDevHlpSUPSemEventSignal(pDevIns, pThis->hTestingLockEvt); } } else { u32 &= ~VMMDEV_TESTING_LOCKED_HI_MBZ_MASK; if (pThis->TestingLockControl.au32[1] != u32) { pThis->TestingLockControl.au32[1] = u32; PDMDevHlpSUPSemEventSignal(pDevIns, pThis->hTestingLockEvt); } } if (!fReadWriteSection) PDMDevHlpCritSectLeave(pDevIns, &pThis->CritSect); else PDMDevHlpCritSectRwLeaveExcl(pDevIns, &pThis->CritSectRw); return VINF_SUCCESS; } case 2: case 1: ASSERT_GUEST_FAILED(); break; default: AssertFailed(); return VERR_INTERNAL_ERROR_2; } default: break; } return VERR_IOM_IOPORT_UNUSED; } /** * @callback_method_impl{FNIOMIOPORTNEWIN} */ static DECLCALLBACK(VBOXSTRICTRC) vmmdevTestingIoRead(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t *pu32, unsigned cb) { PVMMDEV pThis = PDMDEVINS_2_DATA(pDevIns, PVMMDEV); RT_NOREF_PV(pvUser); switch (offPort) { /* * The NOP I/O ports are used for performance measurements. */ case VMMDEV_TESTING_IOPORT_NOP - VMMDEV_TESTING_IOPORT_BASE: switch (cb) { case 4: case 2: case 1: break; default: AssertFailed(); return VERR_INTERNAL_ERROR_2; } *pu32 = VMMDEV_TESTING_NOP_RET; return VINF_SUCCESS; case VMMDEV_TESTING_IOPORT_NOP_R3 - VMMDEV_TESTING_IOPORT_BASE: switch (cb) { case 4: case 2: case 1: #ifndef IN_RING3 return VINF_IOM_R3_IOPORT_READ; #else *pu32 = VMMDEV_TESTING_NOP_RET; return VINF_SUCCESS; #endif default: AssertFailed(); return VERR_INTERNAL_ERROR_2; } /* * The timestamp I/O ports are obviously used for getting a good fix * on the current time (as seen by the host?). * * The high word is latched when reading the low, so reading low + high * gives you a 64-bit timestamp value. */ case VMMDEV_TESTING_IOPORT_TS_LOW - VMMDEV_TESTING_IOPORT_BASE: if (cb == 4) { uint64_t NowTS = RTTimeNanoTS(); *pu32 = (uint32_t)NowTS; pThis->u32TestingHighTimestamp = (uint32_t)(NowTS >> 32); return VINF_SUCCESS; } break; case VMMDEV_TESTING_IOPORT_TS_HIGH - VMMDEV_TESTING_IOPORT_BASE: if (cb == 4) { *pu32 = pThis->u32TestingHighTimestamp; return VINF_SUCCESS; } break; /* * Just return the current locking configuration value after first * acquiring the lock of course. */ case VMMDEV_TESTING_IOPORT_LOCKED_LO - VMMDEV_TESTING_IOPORT_BASE: case VMMDEV_TESTING_IOPORT_LOCKED_HI - VMMDEV_TESTING_IOPORT_BASE: switch (cb) { case 4: case 2: case 1: { /* * Check configuration and enter the designation critical * section in the specific fashion. */ bool const fReadWriteSection = pThis->TestingLockControl.s.fReadWriteSection; bool const fEmtShared = pThis->TestingLockControl.s.fEmtShared; int rc; #ifndef IN_RING3 if (!pThis->TestingLockControl.s.fMustSucceed) { if (!fReadWriteSection) rc = PDMDevHlpCritSectEnter(pDevIns, &pThis->CritSect, VINF_IOM_R3_IOPORT_READ); else if (!fEmtShared) rc = PDMDevHlpCritSectRwEnterExcl(pDevIns, &pThis->CritSectRw, VINF_IOM_R3_IOPORT_READ); else rc = PDMDevHlpCritSectRwEnterShared(pDevIns, &pThis->CritSectRw, VINF_IOM_R3_IOPORT_READ); if (rc != VINF_SUCCESS) return rc; } else #endif { if (!fReadWriteSection) rc = PDMDevHlpCritSectEnter(pDevIns, &pThis->CritSect, VINF_SUCCESS); else if (!fEmtShared) rc = PDMDevHlpCritSectRwEnterExcl(pDevIns, &pThis->CritSectRw, VINF_SUCCESS); else rc = PDMDevHlpCritSectRwEnterShared(pDevIns, &pThis->CritSectRw, VINF_SUCCESS); AssertRCReturn(rc, rc); } /* * Grab return value and, if requested, hold for a while. */ *pu32 = pThis->TestingLockControl.au32[ offPort - (VMMDEV_TESTING_IOPORT_LOCKED_LO - VMMDEV_TESTING_IOPORT_BASE)]; uint64_t cTicks = (uint64_t)pThis->TestingLockControl.s.cKiloTicksEmtHold * _1K; if (cTicks) { uint64_t const uStartTick = ASMReadTSC(); do { ASMNopPause(); ASMNopPause(); } while (ASMReadTSC() - uStartTick < cTicks); } /* * Leave. */ if (!fReadWriteSection) PDMDevHlpCritSectLeave(pDevIns, &pThis->CritSect); else if (!fEmtShared) PDMDevHlpCritSectRwLeaveExcl(pDevIns, &pThis->CritSectRw); else PDMDevHlpCritSectRwLeaveShared(pDevIns, &pThis->CritSectRw); return VINF_SUCCESS; } default: AssertFailed(); return VERR_INTERNAL_ERROR_2; } /* * The command registers is write-only. */ case VMMDEV_TESTING_IOPORT_CMD - VMMDEV_TESTING_IOPORT_BASE: break; /* * The data register is only readable after a query command, otherwise it * behaves as an undefined port. Return zeros if the guest reads too much. */ case VMMDEV_TESTING_IOPORT_DATA - VMMDEV_TESTING_IOPORT_BASE: if (pThis->cbReadableTestingData > 0) { if (pThis->offTestingData < pThis->cbReadableTestingData) { switch (RT_MIN(cb, pThis->cbReadableTestingData - pThis->offTestingData)) { case 1: *pu32 = pThis->TestingData.ab[pThis->offTestingData++]; break; case 2: *pu32 = pThis->TestingData.ab[pThis->offTestingData] | ((uint32_t)pThis->TestingData.ab[pThis->offTestingData + 1] << 8); pThis->offTestingData += 2; break; case 3: *pu32 = pThis->TestingData.ab[pThis->offTestingData] | ((uint32_t)pThis->TestingData.ab[pThis->offTestingData + 1] << 8) | ((uint32_t)pThis->TestingData.ab[pThis->offTestingData + 2] << 16); pThis->offTestingData += 3; break; case 4: *pu32 = pThis->TestingData.ab[pThis->offTestingData] | ((uint32_t)pThis->TestingData.ab[pThis->offTestingData + 1] << 8) | ((uint32_t)pThis->TestingData.ab[pThis->offTestingData + 2] << 16) | ((uint32_t)pThis->TestingData.ab[pThis->offTestingData + 3] << 24); pThis->offTestingData += 4; break; } } else *pu32 = 0; return VINF_SUCCESS; } break; default: break; } return VERR_IOM_IOPORT_UNUSED; } #ifdef IN_RING3 /** * @callback_method_impl{FNPDMTHREADDEV} */ static DECLCALLBACK(int) vmmdevR3TestingLockingThread(PPDMDEVINS pDevIns, PPDMTHREAD pThread) { PVMMDEV pThis = PDMDEVINS_2_DATA(pDevIns, PVMMDEV); PVM pVM = PDMDevHlpGetVM(pDevIns); AssertPtr(pVM); while (RT_LIKELY(pThread->enmState == PDMTHREADSTATE_RUNNING)) { int rc; uint32_t cNsNextWait = 0; uint32_t const fCfgHi = pThis->TestingLockControl.au32[1]; if (fCfgHi & VMMDEV_TESTING_LOCKED_HI_ENABLED) { /* * take lock */ if (!(fCfgHi & VMMDEV_TESTING_LOCKED_HI_TYPE_RW)) rc = PDMDevHlpCritSectEnter(pDevIns, &pThis->CritSect, VINF_SUCCESS); else if (!(fCfgHi & VMMDEV_TESTING_LOCKED_HI_THREAD_SHARED)) rc = PDMDevHlpCritSectRwEnterExcl(pDevIns, &pThis->CritSectRw, VINF_SUCCESS); else rc = PDMDevHlpCritSectRwEnterShared(pDevIns, &pThis->CritSectRw, VINF_SUCCESS); AssertLogRelRCReturn(rc, rc); /* * Delay releasing lock. */ cNsNextWait = pThis->TestingLockControl.s.cUsBetween * RT_NS_1US; if (pThis->TestingLockControl.s.cUsHold) { PDMDevHlpSUPSemEventWaitNsRelIntr(pDevIns, pThis->hTestingLockEvt, pThis->TestingLockControl.s.cUsHold); if (pThis->TestingLockControl.s.fPokeBeforeRelease) VMCC_FOR_EACH_VMCPU_STMT(pVM, RTThreadPoke(pVCpu->hThread)); } /* * Release lock. */ if (!(fCfgHi & VMMDEV_TESTING_LOCKED_HI_TYPE_RW)) rc = PDMDevHlpCritSectLeave(pDevIns, &pThis->CritSect); else if (!(fCfgHi & VMMDEV_TESTING_LOCKED_HI_THREAD_SHARED)) rc = PDMDevHlpCritSectRwLeaveExcl(pDevIns, &pThis->CritSectRw); else rc = PDMDevHlpCritSectRwLeaveShared(pDevIns, &pThis->CritSectRw); AssertLogRelRCReturn(rc, rc); } /* * Wait for the next iteration. */ if (RT_LIKELY(pThread->enmState == PDMTHREADSTATE_RUNNING)) { /* likely */ } else break; if (cNsNextWait > 0) PDMDevHlpSUPSemEventWaitNsRelIntr(pDevIns, pThis->hTestingLockEvt, cNsNextWait); else PDMDevHlpSUPSemEventWaitNoResume(pDevIns, pThis->hTestingLockEvt, RT_INDEFINITE_WAIT); } return VINF_SUCCESS; } /** * @callback_method_impl{FNPDMTHREADWAKEUPDEV} */ static DECLCALLBACK(int) vmmdevR3TestingLockingThreadWakeup(PPDMDEVINS pDevIns, PPDMTHREAD pThread) { PVMMDEV pThis = PDMDEVINS_2_DATA(pDevIns, PVMMDEV); RT_NOREF(pThread); return PDMDevHlpSUPSemEventSignal(pDevIns, pThis->hTestingLockEvt); } /** * Initializes the testing part of the VMMDev if enabled. * * @returns VBox status code. * @param pDevIns The VMMDev device instance. */ void vmmdevR3TestingTerminate(PPDMDEVINS pDevIns) { PVMMDEV pThis = PDMDEVINS_2_DATA(pDevIns, PVMMDEV); PVMMDEVCC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVMMDEVCC); if (!pThis->fTestingEnabled) return; if (pThisCC->hTestingTest != NIL_RTTEST) { RTTestFailed(pThisCC->hTestingTest, "Still open at vmmdev destruction."); RTTestSummaryAndDestroy(pThisCC->hTestingTest); pThisCC->hTestingTest = NIL_RTTEST; } } /** * Initializes the testing part of the VMMDev if enabled. * * @returns VBox status code. * @param pDevIns The VMMDev device instance. */ int vmmdevR3TestingInitialize(PPDMDEVINS pDevIns) { PVMMDEV pThis = PDMDEVINS_2_DATA(pDevIns, PVMMDEV); PVMMDEVCC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVMMDEVCC); int rc; if (!pThis->fTestingEnabled) return VINF_SUCCESS; if (pThis->fTestingMMIO) { /* * Register a chunk of MMIO memory that we'll use for various * tests interfaces. Optional, needs to be explicitly enabled. */ rc = PDMDevHlpMmioCreateAndMap(pDevIns, VMMDEV_TESTING_MMIO_BASE, VMMDEV_TESTING_MMIO_SIZE, vmmdevTestingMmioWrite, vmmdevTestingMmioRead, IOMMMIO_FLAGS_READ_PASSTHRU | IOMMMIO_FLAGS_WRITE_PASSTHRU, "VMMDev Testing", &pThis->hMmioTesting); AssertRCReturn(rc, rc); } /* * Register the I/O ports used for testing. */ rc = PDMDevHlpIoPortCreateAndMap(pDevIns, VMMDEV_TESTING_IOPORT_BASE, VMMDEV_TESTING_IOPORT_COUNT, vmmdevTestingIoWrite, vmmdevTestingIoRead, "VMMDev Testing", NULL /*paExtDescs*/, &pThis->hIoPortTesting); AssertRCReturn(rc, rc); /* * Initialize the read/write critical section used for the locking tests. */ rc = PDMDevHlpCritSectRwInit(pDevIns, &pThis->CritSectRw, RT_SRC_POS, "VMMLockRW"); AssertRCReturn(rc, rc); /* * Create the locking thread. */ rc = PDMDevHlpSUPSemEventCreate(pDevIns, &pThis->hTestingLockEvt); AssertRCReturn(rc, rc); rc = PDMDevHlpThreadCreate(pDevIns, &pThisCC->pTestingLockThread, NULL /*pvUser*/, vmmdevR3TestingLockingThread, vmmdevR3TestingLockingThreadWakeup, 0 /*cbStack*/, RTTHREADTYPE_IO, "VMMLockT"); AssertRCReturn(rc, rc); /* * Open the XML output file(/pipe/whatever) if specfied. */ rc = RTTestCreateEx("VMMDevTesting", RTTEST_C_USE_ENV | RTTEST_C_NO_TLS | RTTEST_C_XML_DELAY_TOP_TEST, RTTESTLVL_DEBUG, -1 /*iNativeTestPipe*/, pThisCC->pszTestingXmlOutput, &pThisCC->hTestingTest); if (RT_FAILURE(rc)) return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS, "Error creating testing instance"); return VINF_SUCCESS; } #else /* !IN_RING3 */ /** * Does the ring-0/raw-mode initialization of the testing part if enabled. * * @returns VBox status code. * @param pDevIns The VMMDev device instance. */ int vmmdevRZTestingInitialize(PPDMDEVINS pDevIns) { PVMMDEV pThis = PDMDEVINS_2_DATA(pDevIns, PVMMDEV); int rc; if (!pThis->fTestingEnabled) return VINF_SUCCESS; if (pThis->fTestingMMIO) { rc = PDMDevHlpMmioSetUpContext(pDevIns, pThis->hMmioTesting, vmmdevTestingMmioWrite, vmmdevTestingMmioRead, NULL); AssertRCReturn(rc, rc); } rc = PDMDevHlpIoPortSetUpContext(pDevIns, pThis->hIoPortTesting, vmmdevTestingIoWrite, vmmdevTestingIoRead, NULL); AssertRCReturn(rc, rc); return VINF_SUCCESS; } #endif /* !IN_RING3 */ #endif /* !VBOX_WITHOUT_TESTING_FEATURES */