/* $Id: PDMDevMiscHlp.cpp 78208 2019-04-18 15:54:40Z vboxsync $ */ /** @file * PDM - Pluggable Device and Driver Manager, Misc. Device Helpers. */ /* * Copyright (C) 2006-2019 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. */ /********************************************************************************************************************************* * Header Files * *********************************************************************************************************************************/ #define LOG_GROUP LOG_GROUP_PDM_DEVICE #include "PDMInternal.h" #include #include #include #include #ifdef VBOX_WITH_REM # include #endif #include #include #include #include #include #include #include #include "PDMInline.h" #include "dtrace/VBoxVMM.h" /** @name Ring-3 PIC Helpers * @{ */ /** @interface_method_impl{PDMPICHLPR3,pfnSetInterruptFF} */ static DECLCALLBACK(void) pdmR3PicHlp_SetInterruptFF(PPDMDEVINS pDevIns) { PDMDEV_ASSERT_DEVINS(pDevIns); PVM pVM = pDevIns->Internal.s.pVMR3; PVMCPU pVCpu = &pVM->aCpus[0]; /* for PIC we always deliver to CPU 0, MP use APIC */ /* IRQ state should be loaded as-is by "LoadExec". Changes can be made from LoadDone. */ Assert(pVM->enmVMState != VMSTATE_LOADING || pVM->pdm.s.fStateLoaded); APICLocalInterrupt(pVCpu, 0 /* u8Pin */, 1 /* u8Level */, VINF_SUCCESS /* rcRZ */); } /** @interface_method_impl{PDMPICHLPR3,pfnClearInterruptFF} */ static DECLCALLBACK(void) pdmR3PicHlp_ClearInterruptFF(PPDMDEVINS pDevIns) { PDMDEV_ASSERT_DEVINS(pDevIns); PVM pVM = pDevIns->Internal.s.pVMR3; PVMCPU pVCpu = &pVM->aCpus[0]; /* for PIC we always deliver to CPU 0, MP use APIC */ /* IRQ state should be loaded as-is by "LoadExec". Changes can be made from LoadDone. */ Assert(pVM->enmVMState != VMSTATE_LOADING || pVM->pdm.s.fStateLoaded); APICLocalInterrupt(pVCpu, 0 /* u8Pin */, 0 /* u8Level */, VINF_SUCCESS /* rcRZ */); } /** @interface_method_impl{PDMPICHLPR3,pfnLock} */ static DECLCALLBACK(int) pdmR3PicHlp_Lock(PPDMDEVINS pDevIns, int rc) { PDMDEV_ASSERT_DEVINS(pDevIns); return pdmLockEx(pDevIns->Internal.s.pVMR3, rc); } /** @interface_method_impl{PDMPICHLPR3,pfnUnlock} */ static DECLCALLBACK(void) pdmR3PicHlp_Unlock(PPDMDEVINS pDevIns) { PDMDEV_ASSERT_DEVINS(pDevIns); pdmUnlock(pDevIns->Internal.s.pVMR3); } /** @interface_method_impl{PDMPICHLPR3,pfnGetRCHelpers} */ static DECLCALLBACK(PCPDMPICHLPRC) pdmR3PicHlp_GetRCHelpers(PPDMDEVINS pDevIns) { PDMDEV_ASSERT_DEVINS(pDevIns); PVM pVM = pDevIns->Internal.s.pVMR3; VM_ASSERT_EMT(pVM); RTRCPTR pRCHelpers = NIL_RTRCPTR; if (VM_IS_RAW_MODE_ENABLED(pVM)) { int rc = PDMR3LdrGetSymbolRC(pVM, NULL, "g_pdmRCPicHlp", &pRCHelpers); AssertReleaseRC(rc); AssertRelease(pRCHelpers); } LogFlow(("pdmR3PicHlp_GetRCHelpers: caller='%s'/%d: returns %RRv\n", pDevIns->pReg->szName, pDevIns->iInstance, pRCHelpers)); return pRCHelpers; } /** @interface_method_impl{PDMPICHLPR3,pfnGetR0Helpers} */ static DECLCALLBACK(PCPDMPICHLPR0) pdmR3PicHlp_GetR0Helpers(PPDMDEVINS pDevIns) { PDMDEV_ASSERT_DEVINS(pDevIns); PVM pVM = pDevIns->Internal.s.pVMR3; VM_ASSERT_EMT(pVM); PCPDMPICHLPR0 pR0Helpers = 0; int rc = PDMR3LdrGetSymbolR0(pVM, NULL, "g_pdmR0PicHlp", &pR0Helpers); AssertReleaseRC(rc); AssertRelease(pR0Helpers); LogFlow(("pdmR3PicHlp_GetR0Helpers: caller='%s'/%d: returns %RHv\n", pDevIns->pReg->szName, pDevIns->iInstance, pR0Helpers)); return pR0Helpers; } /** * PIC Device Helpers. */ const PDMPICHLPR3 g_pdmR3DevPicHlp = { PDM_PICHLPR3_VERSION, pdmR3PicHlp_SetInterruptFF, pdmR3PicHlp_ClearInterruptFF, pdmR3PicHlp_Lock, pdmR3PicHlp_Unlock, pdmR3PicHlp_GetRCHelpers, pdmR3PicHlp_GetR0Helpers, PDM_PICHLPR3_VERSION /* the end */ }; /** @} */ /** @name Ring-3 I/O APIC Helpers * @{ */ /** @interface_method_impl{PDMIOAPICHLPR3,pfnApicBusDeliver} */ static DECLCALLBACK(int) pdmR3IoApicHlp_ApicBusDeliver(PPDMDEVINS pDevIns, uint8_t u8Dest, uint8_t u8DestMode, uint8_t u8DeliveryMode, uint8_t uVector, uint8_t u8Polarity, uint8_t u8TriggerMode, uint32_t uTagSrc) { PDMDEV_ASSERT_DEVINS(pDevIns); PVM pVM = pDevIns->Internal.s.pVMR3; LogFlow(("pdmR3IoApicHlp_ApicBusDeliver: caller='%s'/%d: u8Dest=%RX8 u8DestMode=%RX8 u8DeliveryMode=%RX8 uVector=%RX8 u8Polarity=%RX8 u8TriggerMode=%RX8 uTagSrc=%#x\n", pDevIns->pReg->szName, pDevIns->iInstance, u8Dest, u8DestMode, u8DeliveryMode, uVector, u8Polarity, u8TriggerMode, uTagSrc)); return APICBusDeliver(pVM, u8Dest, u8DestMode, u8DeliveryMode, uVector, u8Polarity, u8TriggerMode, uTagSrc); } /** @interface_method_impl{PDMIOAPICHLPR3,pfnLock} */ static DECLCALLBACK(int) pdmR3IoApicHlp_Lock(PPDMDEVINS pDevIns, int rc) { PDMDEV_ASSERT_DEVINS(pDevIns); LogFlow(("pdmR3IoApicHlp_Lock: caller='%s'/%d: rc=%Rrc\n", pDevIns->pReg->szName, pDevIns->iInstance, rc)); return pdmLockEx(pDevIns->Internal.s.pVMR3, rc); } /** @interface_method_impl{PDMIOAPICHLPR3,pfnUnlock} */ static DECLCALLBACK(void) pdmR3IoApicHlp_Unlock(PPDMDEVINS pDevIns) { PDMDEV_ASSERT_DEVINS(pDevIns); LogFlow(("pdmR3IoApicHlp_Unlock: caller='%s'/%d:\n", pDevIns->pReg->szName, pDevIns->iInstance)); pdmUnlock(pDevIns->Internal.s.pVMR3); } /** @interface_method_impl{PDMIOAPICHLPR3,pfnGetRCHelpers} */ static DECLCALLBACK(PCPDMIOAPICHLPRC) pdmR3IoApicHlp_GetRCHelpers(PPDMDEVINS pDevIns) { PDMDEV_ASSERT_DEVINS(pDevIns); PVM pVM = pDevIns->Internal.s.pVMR3; VM_ASSERT_EMT(pVM); RTRCPTR pRCHelpers = NIL_RTRCPTR; if (VM_IS_RAW_MODE_ENABLED(pVM)) { int rc = PDMR3LdrGetSymbolRC(pVM, NULL, "g_pdmRCIoApicHlp", &pRCHelpers); AssertReleaseRC(rc); AssertRelease(pRCHelpers); } LogFlow(("pdmR3IoApicHlp_GetRCHelpers: caller='%s'/%d: returns %RRv\n", pDevIns->pReg->szName, pDevIns->iInstance, pRCHelpers)); return pRCHelpers; } /** @interface_method_impl{PDMIOAPICHLPR3,pfnGetR0Helpers} */ static DECLCALLBACK(PCPDMIOAPICHLPR0) pdmR3IoApicHlp_GetR0Helpers(PPDMDEVINS pDevIns) { PDMDEV_ASSERT_DEVINS(pDevIns); PVM pVM = pDevIns->Internal.s.pVMR3; VM_ASSERT_EMT(pVM); PCPDMIOAPICHLPR0 pR0Helpers = 0; int rc = PDMR3LdrGetSymbolR0(pVM, NULL, "g_pdmR0IoApicHlp", &pR0Helpers); AssertReleaseRC(rc); AssertRelease(pR0Helpers); LogFlow(("pdmR3IoApicHlp_GetR0Helpers: caller='%s'/%d: returns %RHv\n", pDevIns->pReg->szName, pDevIns->iInstance, pR0Helpers)); return pR0Helpers; } /** * I/O APIC Device Helpers. */ const PDMIOAPICHLPR3 g_pdmR3DevIoApicHlp = { PDM_IOAPICHLPR3_VERSION, pdmR3IoApicHlp_ApicBusDeliver, pdmR3IoApicHlp_Lock, pdmR3IoApicHlp_Unlock, pdmR3IoApicHlp_GetRCHelpers, pdmR3IoApicHlp_GetR0Helpers, PDM_IOAPICHLPR3_VERSION /* the end */ }; /** @} */ /** @name Ring-3 PCI Bus Helpers * @{ */ /** @interface_method_impl{PDMPCIHLPR3,pfnIsaSetIrq} */ static DECLCALLBACK(void) pdmR3PciHlp_IsaSetIrq(PPDMDEVINS pDevIns, int iIrq, int iLevel, uint32_t uTagSrc) { PDMDEV_ASSERT_DEVINS(pDevIns); Log4(("pdmR3PciHlp_IsaSetIrq: iIrq=%d iLevel=%d uTagSrc=%#x\n", iIrq, iLevel, uTagSrc)); PDMIsaSetIrq(pDevIns->Internal.s.pVMR3, iIrq, iLevel, uTagSrc); } /** @interface_method_impl{PDMPCIHLPR3,pfnIoApicSetIrq} */ static DECLCALLBACK(void) pdmR3PciHlp_IoApicSetIrq(PPDMDEVINS pDevIns, int iIrq, int iLevel, uint32_t uTagSrc) { PDMDEV_ASSERT_DEVINS(pDevIns); Log4(("pdmR3PciHlp_IoApicSetIrq: iIrq=%d iLevel=%d uTagSrc=%#x\n", iIrq, iLevel, uTagSrc)); PDMIoApicSetIrq(pDevIns->Internal.s.pVMR3, iIrq, iLevel, uTagSrc); } /** @interface_method_impl{PDMPCIHLPR3,pfnIoApicSendMsi} */ static DECLCALLBACK(void) pdmR3PciHlp_IoApicSendMsi(PPDMDEVINS pDevIns, RTGCPHYS GCPhys, uint32_t uValue, uint32_t uTagSrc) { PDMDEV_ASSERT_DEVINS(pDevIns); Log4(("pdmR3PciHlp_IoApicSendMsi: address=%p value=%x uTagSrc=%#x\n", GCPhys, uValue, uTagSrc)); PDMIoApicSendMsi(pDevIns->Internal.s.pVMR3, GCPhys, uValue, uTagSrc); } /** @interface_method_impl{PDMPCIHLPR3,pfnIsMMIOExBase} */ static DECLCALLBACK(bool) pdmR3PciHlp_IsMMIO2Base(PPDMDEVINS pDevIns, PPDMDEVINS pOwner, RTGCPHYS GCPhys) { PDMDEV_ASSERT_DEVINS(pDevIns); VM_ASSERT_EMT(pDevIns->Internal.s.pVMR3); bool fRc = PGMR3PhysMMIOExIsBase(pDevIns->Internal.s.pVMR3, pOwner, GCPhys); Log4(("pdmR3PciHlp_IsMMIOExBase: pOwner=%p GCPhys=%RGp -> %RTbool\n", pOwner, GCPhys, fRc)); return fRc; } /** @interface_method_impl{PDMPCIHLPR3,pfnLock} */ static DECLCALLBACK(int) pdmR3PciHlp_Lock(PPDMDEVINS pDevIns, int rc) { PDMDEV_ASSERT_DEVINS(pDevIns); LogFlow(("pdmR3PciHlp_Lock: caller='%s'/%d: rc=%Rrc\n", pDevIns->pReg->szName, pDevIns->iInstance, rc)); return pdmLockEx(pDevIns->Internal.s.pVMR3, rc); } /** @interface_method_impl{PDMPCIHLPR3,pfnUnlock} */ static DECLCALLBACK(void) pdmR3PciHlp_Unlock(PPDMDEVINS pDevIns) { PDMDEV_ASSERT_DEVINS(pDevIns); LogFlow(("pdmR3PciHlp_Unlock: caller='%s'/%d:\n", pDevIns->pReg->szName, pDevIns->iInstance)); pdmUnlock(pDevIns->Internal.s.pVMR3); } /** @interface_method_impl{PDMPCIHLPR3,pfnGetRCHelpers} */ static DECLCALLBACK(PCPDMPCIHLPRC) pdmR3PciHlp_GetRCHelpers(PPDMDEVINS pDevIns) { PDMDEV_ASSERT_DEVINS(pDevIns); PVM pVM = pDevIns->Internal.s.pVMR3; VM_ASSERT_EMT(pVM); RTRCPTR pRCHelpers = NIL_RTRCPTR; if (VM_IS_RAW_MODE_ENABLED(pVM)) { int rc = PDMR3LdrGetSymbolRC(pVM, NULL, "g_pdmRCPciHlp", &pRCHelpers); AssertReleaseRC(rc); AssertRelease(pRCHelpers); } LogFlow(("pdmR3PciHlp_GetRCHelpers: caller='%s'/%d: returns %RRv\n", pDevIns->pReg->szName, pDevIns->iInstance, pRCHelpers)); return pRCHelpers; } /** @interface_method_impl{PDMPCIHLPR3,pfnGetR0Helpers} */ static DECLCALLBACK(PCPDMPCIHLPR0) pdmR3PciHlp_GetR0Helpers(PPDMDEVINS pDevIns) { PDMDEV_ASSERT_DEVINS(pDevIns); PVM pVM = pDevIns->Internal.s.pVMR3; VM_ASSERT_EMT(pVM); PCPDMPCIHLPR0 pR0Helpers = 0; int rc = PDMR3LdrGetSymbolR0(pVM, NULL, "g_pdmR0PciHlp", &pR0Helpers); AssertReleaseRC(rc); AssertRelease(pR0Helpers); LogFlow(("pdmR3PciHlp_GetR0Helpers: caller='%s'/%d: returns %RHv\n", pDevIns->pReg->szName, pDevIns->iInstance, pR0Helpers)); return pR0Helpers; } /** * PCI Bus Device Helpers. */ const PDMPCIHLPR3 g_pdmR3DevPciHlp = { PDM_PCIHLPR3_VERSION, pdmR3PciHlp_IsaSetIrq, pdmR3PciHlp_IoApicSetIrq, pdmR3PciHlp_IoApicSendMsi, pdmR3PciHlp_IsMMIO2Base, pdmR3PciHlp_GetRCHelpers, pdmR3PciHlp_GetR0Helpers, pdmR3PciHlp_Lock, pdmR3PciHlp_Unlock, PDM_PCIHLPR3_VERSION, /* the end */ }; /** @} */ /** @name Ring-3 HPET Helpers * {@ */ /** @interface_method_impl{PDMHPETHLPR3,pfnSetLegacyMode} */ static DECLCALLBACK(int) pdmR3HpetHlp_SetLegacyMode(PPDMDEVINS pDevIns, bool fActivated) { PDMDEV_ASSERT_DEVINS(pDevIns); LogFlow(("pdmR3HpetHlp_SetLegacyMode: caller='%s'/%d: fActivated=%RTbool\n", pDevIns->pReg->szName, pDevIns->iInstance, fActivated)); size_t i; int rc = VINF_SUCCESS; static const char * const s_apszDevsToNotify[] = { "i8254", "mc146818" }; for (i = 0; i < RT_ELEMENTS(s_apszDevsToNotify); i++) { PPDMIBASE pBase; rc = PDMR3QueryDevice(pDevIns->Internal.s.pVMR3->pUVM, "i8254", 0, &pBase); if (RT_SUCCESS(rc)) { PPDMIHPETLEGACYNOTIFY pPort = PDMIBASE_QUERY_INTERFACE(pBase, PDMIHPETLEGACYNOTIFY); AssertLogRelMsgBreakStmt(pPort, ("%s\n", s_apszDevsToNotify[i]), rc = VERR_PDM_HPET_LEGACY_NOTIFY_MISSING); pPort->pfnModeChanged(pPort, fActivated); } else if ( rc == VERR_PDM_DEVICE_NOT_FOUND || rc == VERR_PDM_DEVICE_INSTANCE_NOT_FOUND) rc = VINF_SUCCESS; /* the device isn't configured, ignore. */ else AssertLogRelMsgFailedBreak(("%s -> %Rrc\n", s_apszDevsToNotify[i], rc)); } /* Don't bother cleaning up, any failure here will cause a guru meditation. */ LogFlow(("pdmR3HpetHlp_SetLegacyMode: caller='%s'/%d: returns %Rrc\n", pDevIns->pReg->szName, pDevIns->iInstance, rc)); return rc; } /** @interface_method_impl{PDMHPETHLPR3,pfnSetIrq} */ static DECLCALLBACK(int) pdmR3HpetHlp_SetIrq(PPDMDEVINS pDevIns, int iIrq, int iLevel) { PDMDEV_ASSERT_DEVINS(pDevIns); LogFlow(("pdmR3HpetHlp_SetIrq: caller='%s'/%d: iIrq=%d iLevel=%d\n", pDevIns->pReg->szName, pDevIns->iInstance, iIrq, iLevel)); PVM pVM = pDevIns->Internal.s.pVMR3; pdmLock(pVM); uint32_t uTagSrc; if (iLevel & PDM_IRQ_LEVEL_HIGH) { pDevIns->Internal.s.uLastIrqTag = uTagSrc = pdmCalcIrqTag(pVM, pDevIns->idTracing); if (iLevel == PDM_IRQ_LEVEL_HIGH) VBOXVMM_PDM_IRQ_HIGH(VMMGetCpu(pVM), RT_LOWORD(uTagSrc), RT_HIWORD(uTagSrc)); else VBOXVMM_PDM_IRQ_HILO(VMMGetCpu(pVM), RT_LOWORD(uTagSrc), RT_HIWORD(uTagSrc)); } else uTagSrc = pDevIns->Internal.s.uLastIrqTag; PDMIsaSetIrq(pVM, iIrq, iLevel, uTagSrc); /* (The API takes the lock recursively.) */ if (iLevel == PDM_IRQ_LEVEL_LOW) VBOXVMM_PDM_IRQ_LOW(VMMGetCpu(pVM), RT_LOWORD(uTagSrc), RT_HIWORD(uTagSrc)); pdmUnlock(pVM); return 0; } /** @interface_method_impl{PDMHPETHLPR3,pfnGetRCHelpers} */ static DECLCALLBACK(PCPDMHPETHLPRC) pdmR3HpetHlp_GetRCHelpers(PPDMDEVINS pDevIns) { PDMDEV_ASSERT_DEVINS(pDevIns); PVM pVM = pDevIns->Internal.s.pVMR3; VM_ASSERT_EMT(pVM); RTRCPTR pRCHelpers = NIL_RTRCPTR; if (VM_IS_RAW_MODE_ENABLED(pVM)) { int rc = PDMR3LdrGetSymbolRC(pVM, NULL, "g_pdmRCHpetHlp", &pRCHelpers); AssertReleaseRC(rc); AssertRelease(pRCHelpers); } LogFlow(("pdmR3HpetHlp_GetGCHelpers: caller='%s'/%d: returns %RRv\n", pDevIns->pReg->szName, pDevIns->iInstance, pRCHelpers)); return pRCHelpers; } /** @interface_method_impl{PDMHPETHLPR3,pfnGetR0Helpers} */ static DECLCALLBACK(PCPDMHPETHLPR0) pdmR3HpetHlp_GetR0Helpers(PPDMDEVINS pDevIns) { PDMDEV_ASSERT_DEVINS(pDevIns); PVM pVM = pDevIns->Internal.s.pVMR3; VM_ASSERT_EMT(pVM); PCPDMHPETHLPR0 pR0Helpers = 0; int rc = PDMR3LdrGetSymbolR0(pVM, NULL, "g_pdmR0HpetHlp", &pR0Helpers); AssertReleaseRC(rc); AssertRelease(pR0Helpers); LogFlow(("pdmR3HpetHlp_GetR0Helpers: caller='%s'/%d: returns %RHv\n", pDevIns->pReg->szName, pDevIns->iInstance, pR0Helpers)); return pR0Helpers; } /** * HPET Device Helpers. */ const PDMHPETHLPR3 g_pdmR3DevHpetHlp = { PDM_HPETHLPR3_VERSION, pdmR3HpetHlp_GetRCHelpers, pdmR3HpetHlp_GetR0Helpers, pdmR3HpetHlp_SetLegacyMode, pdmR3HpetHlp_SetIrq, PDM_HPETHLPR3_VERSION, /* the end */ }; /** @} */ /** @name Ring-3 Raw PCI Device Helpers * {@ */ /** @interface_method_impl{PDMPCIRAWHLPR3,pfnGetRCHelpers} */ static DECLCALLBACK(PCPDMPCIRAWHLPRC) pdmR3PciRawHlp_GetRCHelpers(PPDMDEVINS pDevIns) { PDMDEV_ASSERT_DEVINS(pDevIns); PVM pVM = pDevIns->Internal.s.pVMR3; VM_ASSERT_EMT(pVM); RTRCPTR pRCHelpers = NIL_RTRCPTR; if (VM_IS_RAW_MODE_ENABLED(pVM)) { int rc = PDMR3LdrGetSymbolRC(pVM, NULL, "g_pdmRCPciRawHlp", &pRCHelpers); AssertReleaseRC(rc); AssertRelease(pRCHelpers); } LogFlow(("pdmR3PciRawHlp_GetGCHelpers: caller='%s'/%d: returns %RRv\n", pDevIns->pReg->szName, pDevIns->iInstance, pRCHelpers)); return pRCHelpers; } /** @interface_method_impl{PDMPCIRAWHLPR3,pfnGetR0Helpers} */ static DECLCALLBACK(PCPDMPCIRAWHLPR0) pdmR3PciRawHlp_GetR0Helpers(PPDMDEVINS pDevIns) { PDMDEV_ASSERT_DEVINS(pDevIns); PVM pVM = pDevIns->Internal.s.pVMR3; VM_ASSERT_EMT(pVM); PCPDMHPETHLPR0 pR0Helpers = NIL_RTR0PTR; int rc = PDMR3LdrGetSymbolR0(pVM, NULL, "g_pdmR0PciRawHlp", &pR0Helpers); AssertReleaseRC(rc); AssertRelease(pR0Helpers); LogFlow(("pdmR3PciRawHlp_GetR0Helpers: caller='%s'/%d: returns %RHv\n", pDevIns->pReg->szName, pDevIns->iInstance, pR0Helpers)); return pR0Helpers; } /** * Raw PCI Device Helpers. */ const PDMPCIRAWHLPR3 g_pdmR3DevPciRawHlp = { PDM_PCIRAWHLPR3_VERSION, pdmR3PciRawHlp_GetRCHelpers, pdmR3PciRawHlp_GetR0Helpers, PDM_PCIRAWHLPR3_VERSION, /* the end */ }; /** @} */ /* none yet */ /** * Firmware Device Helpers. */ const PDMFWHLPR3 g_pdmR3DevFirmwareHlp = { PDM_FWHLPR3_VERSION, PDM_FWHLPR3_VERSION }; /** * DMAC Device Helpers. */ const PDMDMACHLP g_pdmR3DevDmacHlp = { PDM_DMACHLP_VERSION }; /* none yet */ /** * RTC Device Helpers. */ const PDMRTCHLP g_pdmR3DevRtcHlp = { PDM_RTCHLP_VERSION };