/* $Id: PDM.cpp 64397 2016-10-24 15:04:04Z vboxsync $ */ /** @file * PDM - Pluggable Device Manager. */ /* * Copyright (C) 2006-2016 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. */ /** @page pg_pdm PDM - The Pluggable Device & Driver Manager * * The PDM handles devices and their drivers in a flexible and dynamic manner. * * VirtualBox is designed to be very configurable, i.e. the ability to select * virtual devices and configure them uniquely for a VM. For this reason * virtual devices are not statically linked with the VMM but loaded, linked and * instantiated at runtime by PDM using the information found in the * Configuration Manager (CFGM). * * While the chief purpose of PDM is to manager of devices their drivers, it * also serves as somewhere to put usful things like cross context queues, cross * context synchronization (like critsect), VM centric thread management, * asynchronous I/O framework, and so on. * * @sa @ref grp_pdm * @subpage pg_pdm_block_cache * * * @section sec_pdm_dev The Pluggable Devices * * Devices register themselves when the module containing them is loaded. PDM * will call the entry point 'VBoxDevicesRegister' when loading a device module. * The device module will then use the supplied callback table to check the VMM * version and to register its devices. Each device has an unique name (within * the VM configuration anyway). The name is not only used in PDM, but also in * CFGM to organize device and device instance settings, and by anyone who wants * to talk to a specific device instance. * * When all device modules have been successfully loaded PDM will instantiate * those devices which are configured for the VM. Note that a device may have * more than one instance, take network adaptors as an example. When * instantiating a device PDM provides device instance memory and a callback * table (aka Device Helpers / DevHlp) with the VM APIs which the device * instance is trusted with. * * Some devices are trusted devices, most are not. The trusted devices are an * integrated part of the VM and can obtain the VM handle, thus enabling them to * call any VM API. Untrusted devices can only use the callbacks provided * during device instantiation. * * The main purpose in having DevHlps rather than just giving all the devices * the VM handle and let them call the internal VM APIs directly, is both to * create a binary interface that can be supported across releases and to * create a barrier between devices and the VM. (The trusted / untrusted bit * hasn't turned out to be of much use btw., but it's easy to maintain so there * isn't any point in removing it.) * * A device can provide a ring-0 and/or a raw-mode context extension to improve * the VM performance by handling exits and traps (respectively) without * requiring context switches (to ring-3). Callbacks for MMIO and I/O ports * need to be registered specifically for the additional contexts for this to * make sense. Also, the device has to be trusted to be loaded into R0/RC * because of the extra privilege it entails. Note that raw-mode code and data * will be subject to relocation. * * * @subsection sec_pdm_dev_pci PCI Devices * * A PDM device usually registers one a PCI device during it's instantiation, * legacy devices may register zero, while a few (currently none) more * complicated devices may register multiple PCI functions or devices. * * The bus, device and function assignments can either be done explictly via the * configuration or the registration call, or it can be left up to the PCI bus. * The typical VBox configuration construct (ConsoleImpl2.cpp) will do explict * assignments for all devices it's BusAssignmentManager class knows about. * * For explict CFGM style configuration, the "PCIBusNo", "PCIDeviceNo", and * "PCIFunctionNo" values in the PDM device instance configuration (not the * "config" subkey, but the top level one) will be picked up for the primary PCI * device. The primary PCI configuration is by default the first one, but this * can be controlled using the @a idxDevCfg parameter of the * PDMDEVHLPR3::pfnPCIRegister method. For subsequent configuration (@a * idxDevCfg > 0) the values are taken from the "PciDevNN" subkey, where "NN" is * replaced by the @a idxDevCfg value. * * There's currently a limit of 256 PCI devices per PDM device. * * * @section sec_pdm_special_devs Special Devices * * Several kinds of devices interacts with the VMM and/or other device and PDM * will work like a mediator for these. The typical pattern is that the device * calls a special registration device helper with a set of callbacks, PDM * responds by copying this and providing a pointer to a set helper callbacks * for that particular kind of device. Unlike interfaces where the callback * table pointer is used a 'this' pointer, these arrangements will use the * device instance pointer (PPDMDEVINS) as a kind of 'this' pointer. * * For an example of this kind of setup, see the PIC. The PIC registers itself * by calling PDMDEVHLPR3::pfnPICRegister. PDM saves the device instance, * copies the callback tables (PDMPICREG), resolving the ring-0 and raw-mode * addresses in the process, and hands back the pointer to a set of helper * methods (PDMPICHLPR3). The PCI device then queries the ring-0 and raw-mode * helpers using PDMPICHLPR3::pfnGetR0Helpers and PDMPICHLPR3::pfnGetRCHelpers. * The PCI device repeats ths pfnGetRCHelpers call in it's relocation method * since the address changes when RC is relocated. * * @see grp_pdm_device * * * @section sec_pdm_usbdev The Pluggable USB Devices * * USB devices are handled a little bit differently than other devices. The * general concepts wrt. pluggability are mostly the same, but the details * varies. The registration entry point is 'VBoxUsbRegister', the device * instance is PDMUSBINS and the callbacks helpers are different. Also, USB * device are restricted to ring-3 and cannot have any ring-0 or raw-mode * extensions (at least not yet). * * The way USB devices work differs greatly from other devices though since they * aren't attaches directly to the PCI/ISA/whatever system buses but via a * USB host control (OHCI, UHCI or EHCI). USB devices handle USB requests * (URBs) and does not register I/O ports, MMIO ranges or PCI bus * devices/functions. * * @see grp_pdm_usbdev * * * @section sec_pdm_drv The Pluggable Drivers * * The VM devices are often accessing host hardware or OS facilities. For most * devices these facilities can be abstracted in one or more levels. These * abstractions are called drivers. * * For instance take a DVD/CD drive. This can be connected to a SCSI * controller, an ATA controller or a SATA controller. The basics of the DVD/CD * drive implementation remains the same - eject, insert, read, seek, and such. * (For the scsi SCSCI, you might want to speak SCSI directly to, but that can of * course be fixed - see SCSI passthru.) So, it * makes much sense to have a generic CD/DVD driver which implements this. * * Then the media 'inserted' into the DVD/CD drive can be a ISO image, or it can * be read from a real CD or DVD drive (there are probably other custom formats * someone could desire to read or construct too). So, it would make sense to * have abstracted interfaces for dealing with this in a generic way so the * cdrom unit doesn't have to implement it all. Thus we have created the * CDROM/DVD media driver family. * * So, for this example the IDE controller #1 (i.e. secondary) will have * the DVD/CD Driver attached to it's LUN #0 (master). When a media is mounted * the DVD/CD Driver will have a ISO, HostDVD or RAW (media) Driver attached. * * It is possible to configure many levels of drivers inserting filters, loggers, * or whatever you desire into the chain. We're using this for network sniffing, * for instance. * * The drivers are loaded in a similar manner to that of a device, namely by * iterating a keyspace in CFGM, load the modules listed there and call * 'VBoxDriversRegister' with a callback table. * * @see grp_pdm_driver * * * @section sec_pdm_ifs Interfaces * * The pluggable drivers and devices expose one standard interface (callback * table) which is used to construct, destruct, attach, detach,( ++,) and query * other interfaces. A device will query the interfaces required for it's * operation during init and hot-plug. PDM may query some interfaces during * runtime mounting too. * * An interface here means a function table contained within the device or * driver instance data. Its methods are invoked with the function table pointer * as the first argument and they will calculate the address of the device or * driver instance data from it. (This is one of the aspects which *might* have * been better done in C++.) * * @see grp_pdm_interfaces * * * @section sec_pdm_utils Utilities * * As mentioned earlier, PDM is the location of any usful constructs that doesn't * quite fit into IPRT. The next subsections will discuss these. * * One thing these APIs all have in common is that resources will be associated * with a device / driver and automatically freed after it has been destroyed if * the destructor didn't do this. * * * @subsection sec_pdm_async_completion Async I/O * * The PDM Async I/O API provides a somewhat platform agnostic interface for * asynchronous I/O. For reasons of performance and complexity this does not * build upon any IPRT API. * * @todo more details. * * @see grp_pdm_async_completion * * * @subsection sec_pdm_async_task Async Task - not implemented * * @todo implement and describe * * @see grp_pdm_async_task * * * @subsection sec_pdm_critsect Critical Section * * The PDM Critical Section API is currently building on the IPRT API with the * same name. It adds the possibility to use critical sections in ring-0 and * raw-mode as well as in ring-3. There are certain restrictions on the RC and * R0 usage though since we're not able to wait on it, nor wake up anyone that * is waiting on it. These restrictions origins with the use of a ring-3 event * semaphore. In a later incarnation we plan to replace the ring-3 event * semaphore with a ring-0 one, thus enabling us to wake up waiters while * exectuing in ring-0 and making the hardware assisted execution mode more * efficient. (Raw-mode won't benefit much from this, naturally.) * * @see grp_pdm_critsect * * * @subsection sec_pdm_queue Queue * * The PDM Queue API is for queuing one or more tasks for later consumption in * ring-3 by EMT, and optionally forcing a delayed or ASAP return to ring-3. The * queues can also be run on a timer basis as an alternative to the ASAP thing. * The queue will be flushed at forced action time. * * A queue can also be used by another thread (a I/O worker for instance) to * send work / events over to the EMT. * * @see grp_pdm_queue * * * @subsection sec_pdm_task Task - not implemented yet * * The PDM Task API is for flagging a task for execution at a later point when * we're back in ring-3, optionally forcing the ring-3 return to happen ASAP. * As you can see the concept is similar to queues only simpler. * * A task can also be scheduled by another thread (a I/O worker for instance) as * a mean of getting something done in EMT. * * @see grp_pdm_task * * * @subsection sec_pdm_thread Thread * * The PDM Thread API is there to help devices and drivers manage their threads * correctly wrt. power on, suspend, resume, power off and destruction. * * The general usage pattern for threads in the employ of devices and drivers is * that they shuffle data or requests while the VM is running and stop doing * this when the VM is paused or powered down. Rogue threads running while the * VM is paused can cause the state to change during saving or have other * unwanted side effects. The PDM Threads API ensures that this won't happen. * * @see grp_pdm_thread * */ /********************************************************************************************************************************* * Header Files * *********************************************************************************************************************************/ #define LOG_GROUP LOG_GROUP_PDM #define PDMPCIDEV_INCLUDE_PRIVATE /* Hack to get pdmpcidevint.h included at the right point. */ #include "PDMInternal.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /********************************************************************************************************************************* * Defined Constants And Macros * *********************************************************************************************************************************/ /** The PDM saved state version. */ #define PDM_SAVED_STATE_VERSION 5 /** Before the PDM audio architecture was introduced there was an "AudioSniffer" * device which took care of multiplexing input/output audio data from/to various places. * Thus this device is not needed/used anymore. */ #define PDM_SAVED_STATE_VERSION_PRE_PDM_AUDIO 4 #define PDM_SAVED_STATE_VERSION_PRE_NMI_FF 3 /** The number of nanoseconds a suspend callback needs to take before * PDMR3Suspend warns about it taking too long. */ #define PDMSUSPEND_WARN_AT_NS UINT64_C(1200000000) /** The number of nanoseconds a suspend callback needs to take before * PDMR3PowerOff warns about it taking too long. */ #define PDMPOWEROFF_WARN_AT_NS UINT64_C( 900000000) /********************************************************************************************************************************* * Structures and Typedefs * *********************************************************************************************************************************/ /** * Statistics of asynchronous notification tasks - used by reset, suspend and * power off. */ typedef struct PDMNOTIFYASYNCSTATS { /** The start timestamp. */ uint64_t uStartNsTs; /** When to log the next time. */ uint64_t cNsElapsedNextLog; /** The loop counter. */ uint32_t cLoops; /** The number of pending asynchronous notification tasks. */ uint32_t cAsync; /** The name of the operation (log prefix). */ const char *pszOp; /** The current list buffer position. */ size_t offList; /** String containing a list of the pending tasks. */ char szList[1024]; } PDMNOTIFYASYNCSTATS; /** Pointer to the stats of pending asynchronous notification tasks. */ typedef PDMNOTIFYASYNCSTATS *PPDMNOTIFYASYNCSTATS; /********************************************************************************************************************************* * Internal Functions * *********************************************************************************************************************************/ static DECLCALLBACK(int) pdmR3LiveExec(PVM pVM, PSSMHANDLE pSSM, uint32_t uPass); static DECLCALLBACK(int) pdmR3SaveExec(PVM pVM, PSSMHANDLE pSSM); static DECLCALLBACK(int) pdmR3LoadExec(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass); static DECLCALLBACK(int) pdmR3LoadPrep(PVM pVM, PSSMHANDLE pSSM); static FNDBGFHANDLERINT pdmR3InfoTracingIds; /** * Initializes the PDM part of the UVM. * * This doesn't really do much right now but has to be here for the sake * of completeness. * * @returns VBox status code. * @param pUVM Pointer to the user mode VM structure. */ VMMR3_INT_DECL(int) PDMR3InitUVM(PUVM pUVM) { AssertCompile(sizeof(pUVM->pdm.s) <= sizeof(pUVM->pdm.padding)); AssertRelease(sizeof(pUVM->pdm.s) <= sizeof(pUVM->pdm.padding)); pUVM->pdm.s.pModules = NULL; pUVM->pdm.s.pCritSects = NULL; pUVM->pdm.s.pRwCritSects = NULL; return RTCritSectInit(&pUVM->pdm.s.ListCritSect); } /** * Initializes the PDM. * * @returns VBox status code. * @param pVM The cross context VM structure. */ VMMR3_INT_DECL(int) PDMR3Init(PVM pVM) { LogFlow(("PDMR3Init\n")); /* * Assert alignment and sizes. */ AssertRelease(!(RT_OFFSETOF(VM, pdm.s) & 31)); AssertRelease(sizeof(pVM->pdm.s) <= sizeof(pVM->pdm.padding)); AssertCompileMemberAlignment(PDM, CritSect, sizeof(uintptr_t)); /* * Init the structure. */ pVM->pdm.s.GCPhysVMMDevHeap = NIL_RTGCPHYS; //pVM->pdm.s.idTracingDev = 0; pVM->pdm.s.idTracingOther = 1024; /* * Initialize critical sections first. */ int rc = pdmR3CritSectBothInitStats(pVM); if (RT_SUCCESS(rc)) rc = PDMR3CritSectInit(pVM, &pVM->pdm.s.CritSect, RT_SRC_POS, "PDM"); if (RT_SUCCESS(rc)) { rc = PDMR3CritSectInit(pVM, &pVM->pdm.s.NopCritSect, RT_SRC_POS, "NOP"); if (RT_SUCCESS(rc)) pVM->pdm.s.NopCritSect.s.Core.fFlags |= RTCRITSECT_FLAGS_NOP; } /* * Initialize sub components. */ if (RT_SUCCESS(rc)) rc = pdmR3LdrInitU(pVM->pUVM); #ifdef VBOX_WITH_PDM_ASYNC_COMPLETION if (RT_SUCCESS(rc)) rc = pdmR3AsyncCompletionInit(pVM); #endif #ifdef VBOX_WITH_NETSHAPER if (RT_SUCCESS(rc)) rc = pdmR3NetShaperInit(pVM); #endif if (RT_SUCCESS(rc)) rc = pdmR3BlkCacheInit(pVM); if (RT_SUCCESS(rc)) rc = pdmR3DrvInit(pVM); if (RT_SUCCESS(rc)) rc = pdmR3DevInit(pVM); if (RT_SUCCESS(rc)) { /* * Register the saved state data unit. */ rc = SSMR3RegisterInternal(pVM, "pdm", 1, PDM_SAVED_STATE_VERSION, 128, NULL, pdmR3LiveExec, NULL, NULL, pdmR3SaveExec, NULL, pdmR3LoadPrep, pdmR3LoadExec, NULL); if (RT_SUCCESS(rc)) { /* * Register the info handlers. */ DBGFR3InfoRegisterInternal(pVM, "pdmtracingids", "Displays the tracing IDs assigned by PDM to devices, USB device, drivers and more.", pdmR3InfoTracingIds); LogFlow(("PDM: Successfully initialized\n")); return rc; } } /* * Cleanup and return failure. */ PDMR3Term(pVM); LogFlow(("PDMR3Init: returns %Rrc\n", rc)); return rc; } /** * Init phase completed callback. * * We use this for calling PDMDEVREG::pfnInitComplete callback after everything * else has been initialized. * * @returns VBox status code. * @param pVM The cross context VM structure. * @param enmWhat The phase that was completed. */ VMMR3_INT_DECL(int) PDMR3InitCompleted(PVM pVM, VMINITCOMPLETED enmWhat) { #ifdef VBOX_WITH_RAW_MODE if (enmWhat == VMINITCOMPLETED_RC) #else if (enmWhat == VMINITCOMPLETED_RING0) #endif return pdmR3DevInitComplete(pVM); return VINF_SUCCESS; } /** * Applies relocations to data and code managed by this * component. This function will be called at init and * whenever the VMM need to relocate it self inside the GC. * * @param pVM The cross context VM structure. * @param offDelta Relocation delta relative to old location. * @remark The loader subcomponent is relocated by PDMR3LdrRelocate() very * early in the relocation phase. */ VMMR3_INT_DECL(void) PDMR3Relocate(PVM pVM, RTGCINTPTR offDelta) { LogFlow(("PDMR3Relocate\n")); /* * Queues. */ pdmR3QueueRelocate(pVM, offDelta); pVM->pdm.s.pDevHlpQueueRC = PDMQueueRCPtr(pVM->pdm.s.pDevHlpQueueR3); /* * Critical sections. */ pdmR3CritSectBothRelocate(pVM); /* * The registered PIC. */ if (pVM->pdm.s.Pic.pDevInsRC) { pVM->pdm.s.Pic.pDevInsRC += offDelta; pVM->pdm.s.Pic.pfnSetIrqRC += offDelta; pVM->pdm.s.Pic.pfnGetInterruptRC += offDelta; } /* * The registered APIC. */ if (pVM->pdm.s.Apic.pDevInsRC) { pVM->pdm.s.Apic.pDevInsRC += offDelta; pVM->pdm.s.Apic.pfnGetInterruptRC += offDelta; pVM->pdm.s.Apic.pfnSetBaseMsrRC += offDelta; pVM->pdm.s.Apic.pfnGetBaseMsrRC += offDelta; pVM->pdm.s.Apic.pfnSetTprRC += offDelta; pVM->pdm.s.Apic.pfnGetTprRC += offDelta; pVM->pdm.s.Apic.pfnWriteMsrRC += offDelta; pVM->pdm.s.Apic.pfnReadMsrRC += offDelta; pVM->pdm.s.Apic.pfnBusDeliverRC += offDelta; if (pVM->pdm.s.Apic.pfnLocalInterruptRC) pVM->pdm.s.Apic.pfnLocalInterruptRC += offDelta; pVM->pdm.s.Apic.pfnGetTimerFreqRC += offDelta; } /* * The registered I/O APIC. */ if (pVM->pdm.s.IoApic.pDevInsRC) { pVM->pdm.s.IoApic.pDevInsRC += offDelta; pVM->pdm.s.IoApic.pfnSetIrqRC += offDelta; if (pVM->pdm.s.IoApic.pfnSendMsiRC) pVM->pdm.s.IoApic.pfnSendMsiRC += offDelta; if (pVM->pdm.s.IoApic.pfnSetEoiRC) pVM->pdm.s.IoApic.pfnSetEoiRC += offDelta; } /* * The register PCI Buses. */ for (unsigned i = 0; i < RT_ELEMENTS(pVM->pdm.s.aPciBuses); i++) { if (pVM->pdm.s.aPciBuses[i].pDevInsRC) { pVM->pdm.s.aPciBuses[i].pDevInsRC += offDelta; pVM->pdm.s.aPciBuses[i].pfnSetIrqRC += offDelta; } } /* * Devices & Drivers. */ int rc; PCPDMDEVHLPRC pDevHlpRC = NIL_RTRCPTR; if (!HMIsEnabled(pVM)) { rc = PDMR3LdrGetSymbolRC(pVM, NULL, "g_pdmRCDevHlp", &pDevHlpRC); AssertReleaseMsgRC(rc, ("rc=%Rrc when resolving g_pdmRCDevHlp\n", rc)); } PCPDMDRVHLPRC pDrvHlpRC = NIL_RTRCPTR; if (!HMIsEnabled(pVM)) { rc = PDMR3LdrGetSymbolRC(pVM, NULL, "g_pdmRCDevHlp", &pDrvHlpRC); AssertReleaseMsgRC(rc, ("rc=%Rrc when resolving g_pdmRCDevHlp\n", rc)); } for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) { if (pDevIns->pReg->fFlags & PDM_DEVREG_FLAGS_RC) { pDevIns->pHlpRC = pDevHlpRC; pDevIns->pvInstanceDataRC = MMHyperR3ToRC(pVM, pDevIns->pvInstanceDataR3); if (pDevIns->pCritSectRoR3) pDevIns->pCritSectRoRC = MMHyperR3ToRC(pVM, pDevIns->pCritSectRoR3); pDevIns->Internal.s.pVMRC = pVM->pVMRC; PPDMPCIDEV pPciDev = pDevIns->Internal.s.pHeadPciDevR3; if (pPciDev) { pDevIns->Internal.s.pHeadPciDevRC = MMHyperR3ToRC(pVM, pPciDev); do { pPciDev->Int.s.pDevInsRC = MMHyperR3ToRC(pVM, pPciDev->Int.s.pDevInsR3); pPciDev->Int.s.pPdmBusRC = MMHyperR3ToRC(pVM, pPciDev->Int.s.pPdmBusR3); if (pPciDev->Int.s.pNextR3) pPciDev->Int.s.pNextRC = MMHyperR3ToRC(pVM, pPciDev->Int.s.pNextR3); pPciDev = pPciDev->Int.s.pNextR3; } while (pPciDev); } if (pDevIns->pReg->pfnRelocate) { LogFlow(("PDMR3Relocate: Relocating device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance)); pDevIns->pReg->pfnRelocate(pDevIns, offDelta); } } for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext) { for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown) { if (pDrvIns->pReg->fFlags & PDM_DRVREG_FLAGS_RC) { pDrvIns->pHlpRC = pDrvHlpRC; pDrvIns->pvInstanceDataRC = MMHyperR3ToRC(pVM, pDrvIns->pvInstanceDataR3); pDrvIns->Internal.s.pVMRC = pVM->pVMRC; if (pDrvIns->pReg->pfnRelocate) { LogFlow(("PDMR3Relocate: Relocating driver '%s'/%u attached to '%s'/%d/%u\n", pDrvIns->pReg->szName, pDrvIns->iInstance, pDevIns->pReg->szName, pDevIns->iInstance, pLun->iLun)); pDrvIns->pReg->pfnRelocate(pDrvIns, offDelta); } } } } } } /** * Worker for pdmR3Term that terminates a LUN chain. * * @param pVM The cross context VM structure. * @param pLun The head of the chain. * @param pszDevice The name of the device (for logging). * @param iInstance The device instance number (for logging). */ static void pdmR3TermLuns(PVM pVM, PPDMLUN pLun, const char *pszDevice, unsigned iInstance) { RT_NOREF2(pszDevice, iInstance); for (; pLun; pLun = pLun->pNext) { /* * Destroy them one at a time from the bottom up. * (The serial device/drivers depends on this - bad.) */ PPDMDRVINS pDrvIns = pLun->pBottom; pLun->pBottom = pLun->pTop = NULL; while (pDrvIns) { PPDMDRVINS pDrvNext = pDrvIns->Internal.s.pUp; if (pDrvIns->pReg->pfnDestruct) { LogFlow(("pdmR3DevTerm: Destroying - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pReg->szName, pDrvIns->iInstance, pLun->iLun, pszDevice, iInstance)); pDrvIns->pReg->pfnDestruct(pDrvIns); } pDrvIns->Internal.s.pDrv->cInstances--; /* Order of resource freeing like in pdmR3DrvDestroyChain, but * not all need to be done as they are done globally later. */ //PDMR3QueueDestroyDriver(pVM, pDrvIns); TMR3TimerDestroyDriver(pVM, pDrvIns); SSMR3DeregisterDriver(pVM, pDrvIns, NULL, 0); //pdmR3ThreadDestroyDriver(pVM, pDrvIns); //DBGFR3InfoDeregisterDriver(pVM, pDrvIns, NULL); //pdmR3CritSectBothDeleteDriver(pVM, pDrvIns); //PDMR3BlkCacheReleaseDriver(pVM, pDrvIns); #ifdef VBOX_WITH_PDM_ASYNC_COMPLETION //pdmR3AsyncCompletionTemplateDestroyDriver(pVM, pDrvIns); #endif /* Clear the driver struture to catch sloppy code. */ ASMMemFill32(pDrvIns, RT_OFFSETOF(PDMDRVINS, achInstanceData[pDrvIns->pReg->cbInstance]), 0xdeadd0d0); pDrvIns = pDrvNext; } } } /** * Terminates the PDM. * * Termination means cleaning up and freeing all resources, * the VM it self is at this point powered off or suspended. * * @returns VBox status code. * @param pVM The cross context VM structure. */ VMMR3_INT_DECL(int) PDMR3Term(PVM pVM) { LogFlow(("PDMR3Term:\n")); AssertMsg(PDMCritSectIsInitialized(&pVM->pdm.s.CritSect), ("bad init order!\n")); /* * Iterate the device instances and attach drivers, doing * relevant destruction processing. * * N.B. There is no need to mess around freeing memory allocated * from any MM heap since MM will do that in its Term function. */ /* usb ones first. */ for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext) { pdmR3TermLuns(pVM, pUsbIns->Internal.s.pLuns, pUsbIns->pReg->szName, pUsbIns->iInstance); /* * Detach it from the HUB (if it's actually attached to one) so the HUB has * a chance to stop accessing any data. */ PPDMUSBHUB pHub = pUsbIns->Internal.s.pHub; if (pHub) { int rc = pHub->Reg.pfnDetachDevice(pHub->pDrvIns, pUsbIns, pUsbIns->Internal.s.iPort); if (RT_FAILURE(rc)) { LogRel(("PDM: Failed to detach USB device '%s' instance %d from %p: %Rrc\n", pUsbIns->pReg->szName, pUsbIns->iInstance, pHub, rc)); } else { pHub->cAvailablePorts++; Assert(pHub->cAvailablePorts > 0 && pHub->cAvailablePorts <= pHub->cPorts); pUsbIns->Internal.s.pHub = NULL; } } if (pUsbIns->pReg->pfnDestruct) { LogFlow(("pdmR3DevTerm: Destroying - device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance)); pUsbIns->pReg->pfnDestruct(pUsbIns); } //TMR3TimerDestroyUsb(pVM, pUsbIns); //SSMR3DeregisterUsb(pVM, pUsbIns, NULL, 0); pdmR3ThreadDestroyUsb(pVM, pUsbIns); } /* then the 'normal' ones. */ for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) { pdmR3TermLuns(pVM, pDevIns->Internal.s.pLunsR3, pDevIns->pReg->szName, pDevIns->iInstance); if (pDevIns->pReg->pfnDestruct) { LogFlow(("pdmR3DevTerm: Destroying - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance)); pDevIns->pReg->pfnDestruct(pDevIns); } TMR3TimerDestroyDevice(pVM, pDevIns); SSMR3DeregisterDevice(pVM, pDevIns, NULL, 0); pdmR3CritSectBothDeleteDevice(pVM, pDevIns); pdmR3ThreadDestroyDevice(pVM, pDevIns); PDMR3QueueDestroyDevice(pVM, pDevIns); PGMR3PhysMMIOExDeregister(pVM, pDevIns, UINT32_MAX, UINT32_MAX); #ifdef VBOX_WITH_PDM_ASYNC_COMPLETION pdmR3AsyncCompletionTemplateDestroyDevice(pVM, pDevIns); #endif DBGFR3InfoDeregisterDevice(pVM, pDevIns, NULL); } /* * Destroy all threads. */ pdmR3ThreadDestroyAll(pVM); /* * Destroy the block cache. */ pdmR3BlkCacheTerm(pVM); #ifdef VBOX_WITH_NETSHAPER /* * Destroy network bandwidth groups. */ pdmR3NetShaperTerm(pVM); #endif #ifdef VBOX_WITH_PDM_ASYNC_COMPLETION /* * Free async completion managers. */ pdmR3AsyncCompletionTerm(pVM); #endif /* * Free modules. */ pdmR3LdrTermU(pVM->pUVM); /* * Destroy the PDM lock. */ PDMR3CritSectDelete(&pVM->pdm.s.CritSect); /* The MiscCritSect is deleted by PDMR3CritSectBothTerm later. */ LogFlow(("PDMR3Term: returns %Rrc\n", VINF_SUCCESS)); return VINF_SUCCESS; } /** * Terminates the PDM part of the UVM. * * This will unload any modules left behind. * * @param pUVM Pointer to the user mode VM structure. */ VMMR3_INT_DECL(void) PDMR3TermUVM(PUVM pUVM) { /* * In the normal cause of events we will now call pdmR3LdrTermU for * the second time. In the case of init failure however, this might * the first time, which is why we do it. */ pdmR3LdrTermU(pUVM); Assert(pUVM->pdm.s.pCritSects == NULL); Assert(pUVM->pdm.s.pRwCritSects == NULL); RTCritSectDelete(&pUVM->pdm.s.ListCritSect); } /** * Bits that are saved in pass 0 and in the final pass. * * @param pVM The cross context VM structure. * @param pSSM The saved state handle. */ static void pdmR3SaveBoth(PVM pVM, PSSMHANDLE pSSM) { /* * Save the list of device instances so we can check that they're all still * there when we load the state and that nothing new has been added. */ uint32_t i = 0; for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3, i++) { SSMR3PutU32(pSSM, i); SSMR3PutStrZ(pSSM, pDevIns->pReg->szName); SSMR3PutU32(pSSM, pDevIns->iInstance); } SSMR3PutU32(pSSM, UINT32_MAX); /* terminator */ } /** * Live save. * * @returns VBox status code. * @param pVM The cross context VM structure. * @param pSSM The saved state handle. * @param uPass The pass. */ static DECLCALLBACK(int) pdmR3LiveExec(PVM pVM, PSSMHANDLE pSSM, uint32_t uPass) { LogFlow(("pdmR3LiveExec:\n")); AssertReturn(uPass == 0, VERR_SSM_UNEXPECTED_PASS); pdmR3SaveBoth(pVM, pSSM); return VINF_SSM_DONT_CALL_AGAIN; } /** * Execute state save operation. * * @returns VBox status code. * @param pVM The cross context VM structure. * @param pSSM The saved state handle. */ static DECLCALLBACK(int) pdmR3SaveExec(PVM pVM, PSSMHANDLE pSSM) { LogFlow(("pdmR3SaveExec:\n")); /* * Save interrupt and DMA states. */ for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++) { PVMCPU pVCpu = &pVM->aCpus[idCpu]; SSMR3PutU32(pSSM, VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_APIC)); SSMR3PutU32(pSSM, VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_PIC)); SSMR3PutU32(pSSM, VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_NMI)); SSMR3PutU32(pSSM, VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_SMI)); } SSMR3PutU32(pSSM, VM_FF_IS_SET(pVM, VM_FF_PDM_DMA)); pdmR3SaveBoth(pVM, pSSM); return VINF_SUCCESS; } /** * Prepare state load operation. * * This will dispatch pending operations and clear the FFs governed by PDM and its devices. * * @returns VBox status code. * @param pVM The cross context VM structure. * @param pSSM The SSM handle. */ static DECLCALLBACK(int) pdmR3LoadPrep(PVM pVM, PSSMHANDLE pSSM) { LogFlow(("pdmR3LoadPrep: %s%s\n", VM_FF_IS_SET(pVM, VM_FF_PDM_QUEUES) ? " VM_FF_PDM_QUEUES" : "", VM_FF_IS_SET(pVM, VM_FF_PDM_DMA) ? " VM_FF_PDM_DMA" : "")); #ifdef LOG_ENABLED for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++) { PVMCPU pVCpu = &pVM->aCpus[idCpu]; LogFlow(("pdmR3LoadPrep: VCPU %u %s%s\n", idCpu, VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_APIC) ? " VMCPU_FF_INTERRUPT_APIC" : "", VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_PIC) ? " VMCPU_FF_INTERRUPT_PIC" : "")); } #endif NOREF(pSSM); /* * In case there is work pending that will raise an interrupt, * start a DMA transfer, or release a lock. (unlikely) */ if (VM_FF_IS_SET(pVM, VM_FF_PDM_QUEUES)) PDMR3QueueFlushAll(pVM); /* Clear the FFs. */ for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++) { PVMCPU pVCpu = &pVM->aCpus[idCpu]; VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_APIC); VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_PIC); VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_NMI); VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_SMI); } VM_FF_CLEAR(pVM, VM_FF_PDM_DMA); return VINF_SUCCESS; } /** * Execute state load operation. * * @returns VBox status code. * @param pVM The cross context VM structure. * @param pSSM SSM operation handle. * @param uVersion Data layout version. * @param uPass The data pass. */ static DECLCALLBACK(int) pdmR3LoadExec(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass) { int rc; LogFlow(("pdmR3LoadExec: uPass=%#x\n", uPass)); /* * Validate version. */ if ( uVersion != PDM_SAVED_STATE_VERSION && uVersion != PDM_SAVED_STATE_VERSION_PRE_NMI_FF && uVersion != PDM_SAVED_STATE_VERSION_PRE_PDM_AUDIO) { AssertMsgFailed(("Invalid version uVersion=%d!\n", uVersion)); return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION; } if (uPass == SSM_PASS_FINAL) { /* * Load the interrupt and DMA states. */ for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++) { PVMCPU pVCpu = &pVM->aCpus[idCpu]; /* APIC interrupt */ uint32_t fInterruptPending = 0; rc = SSMR3GetU32(pSSM, &fInterruptPending); if (RT_FAILURE(rc)) return rc; if (fInterruptPending & ~1) { AssertMsgFailed(("fInterruptPending=%#x (APIC)\n", fInterruptPending)); return VERR_SSM_DATA_UNIT_FORMAT_CHANGED; } AssertRelease(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_APIC)); if (fInterruptPending) VMCPU_FF_SET(pVCpu, VMCPU_FF_INTERRUPT_APIC); /* PIC interrupt */ fInterruptPending = 0; rc = SSMR3GetU32(pSSM, &fInterruptPending); if (RT_FAILURE(rc)) return rc; if (fInterruptPending & ~1) { AssertMsgFailed(("fInterruptPending=%#x (PIC)\n", fInterruptPending)); return VERR_SSM_DATA_UNIT_FORMAT_CHANGED; } AssertRelease(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_PIC)); if (fInterruptPending) VMCPU_FF_SET(pVCpu, VMCPU_FF_INTERRUPT_PIC); if (uVersion > PDM_SAVED_STATE_VERSION_PRE_NMI_FF) { /* NMI interrupt */ fInterruptPending = 0; rc = SSMR3GetU32(pSSM, &fInterruptPending); if (RT_FAILURE(rc)) return rc; if (fInterruptPending & ~1) { AssertMsgFailed(("fInterruptPending=%#x (NMI)\n", fInterruptPending)); return VERR_SSM_DATA_UNIT_FORMAT_CHANGED; } AssertRelease(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_NMI)); if (fInterruptPending) VMCPU_FF_SET(pVCpu, VMCPU_FF_INTERRUPT_NMI); /* SMI interrupt */ fInterruptPending = 0; rc = SSMR3GetU32(pSSM, &fInterruptPending); if (RT_FAILURE(rc)) return rc; if (fInterruptPending & ~1) { AssertMsgFailed(("fInterruptPending=%#x (SMI)\n", fInterruptPending)); return VERR_SSM_DATA_UNIT_FORMAT_CHANGED; } AssertRelease(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_SMI)); if (fInterruptPending) VMCPU_FF_SET(pVCpu, VMCPU_FF_INTERRUPT_SMI); } } /* DMA pending */ uint32_t fDMAPending = 0; rc = SSMR3GetU32(pSSM, &fDMAPending); if (RT_FAILURE(rc)) return rc; if (fDMAPending & ~1) { AssertMsgFailed(("fDMAPending=%#x\n", fDMAPending)); return VERR_SSM_DATA_UNIT_FORMAT_CHANGED; } if (fDMAPending) VM_FF_SET(pVM, VM_FF_PDM_DMA); Log(("pdmR3LoadExec: VM_FF_PDM_DMA=%RTbool\n", VM_FF_IS_SET(pVM, VM_FF_PDM_DMA))); } /* * Load the list of devices and verify that they are all there. */ for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) pDevIns->Internal.s.fIntFlags &= ~PDMDEVINSINT_FLAGS_FOUND; for (uint32_t i = 0; ; i++) { /* Get the sequence number / terminator. */ uint32_t u32Sep; rc = SSMR3GetU32(pSSM, &u32Sep); if (RT_FAILURE(rc)) return rc; if (u32Sep == UINT32_MAX) break; if (u32Sep != i) AssertMsgFailedReturn(("Out of sequence. u32Sep=%#x i=%#x\n", u32Sep, i), VERR_SSM_DATA_UNIT_FORMAT_CHANGED); /* Get the name and instance number. */ char szName[RT_SIZEOFMEMB(PDMDEVREG, szName)]; rc = SSMR3GetStrZ(pSSM, szName, sizeof(szName)); if (RT_FAILURE(rc)) return rc; uint32_t iInstance; rc = SSMR3GetU32(pSSM, &iInstance); if (RT_FAILURE(rc)) return rc; /* Try locate it. */ PPDMDEVINS pDevIns; for (pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) if ( !RTStrCmp(szName, pDevIns->pReg->szName) && pDevIns->iInstance == iInstance) { AssertLogRelMsgReturn(!(pDevIns->Internal.s.fIntFlags & PDMDEVINSINT_FLAGS_FOUND), ("%s/#%u\n", pDevIns->pReg->szName, pDevIns->iInstance), VERR_SSM_DATA_UNIT_FORMAT_CHANGED); pDevIns->Internal.s.fIntFlags |= PDMDEVINSINT_FLAGS_FOUND; break; } if (!pDevIns) { bool fSkip = false; /* Skip the non-existing (deprecated) "AudioSniffer" device stored in the saved state. */ if ( uVersion <= PDM_SAVED_STATE_VERSION_PRE_PDM_AUDIO && !RTStrCmp(szName, "AudioSniffer")) fSkip = true; if (!fSkip) { LogRel(("Device '%s'/%d not found in current config\n", szName, iInstance)); if (SSMR3HandleGetAfter(pSSM) != SSMAFTER_DEBUG_IT) return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Device '%s'/%d not found in current config"), szName, iInstance); } } } /* * Check that no additional devices were configured. */ for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) if (!(pDevIns->Internal.s.fIntFlags & PDMDEVINSINT_FLAGS_FOUND)) { LogRel(("Device '%s'/%d not found in the saved state\n", pDevIns->pReg->szName, pDevIns->iInstance)); if (SSMR3HandleGetAfter(pSSM) != SSMAFTER_DEBUG_IT) return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Device '%s'/%d not found in the saved state"), pDevIns->pReg->szName, pDevIns->iInstance); } return VINF_SUCCESS; } /** * Worker for PDMR3PowerOn that deals with one driver. * * @param pDrvIns The driver instance. * @param pszDevName The parent device name. * @param iDevInstance The parent device instance number. * @param iLun The parent LUN number. */ DECLINLINE(int) pdmR3PowerOnDrv(PPDMDRVINS pDrvIns, const char *pszDevName, uint32_t iDevInstance, uint32_t iLun) { Assert(pDrvIns->Internal.s.fVMSuspended); if (pDrvIns->pReg->pfnPowerOn) { LogFlow(("PDMR3PowerOn: Notifying - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance)); int rc = VINF_SUCCESS; pDrvIns->pReg->pfnPowerOn(pDrvIns); if (RT_FAILURE(rc)) { LogRel(("PDMR3PowerOn: Driver '%s'/%d on LUN#%d of device '%s'/%d -> %Rrc\n", pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance, rc)); return rc; } } pDrvIns->Internal.s.fVMSuspended = false; return VINF_SUCCESS; } /** * Worker for PDMR3PowerOn that deals with one USB device instance. * * @returns VBox status code. * @param pUsbIns The USB device instance. */ DECLINLINE(int) pdmR3PowerOnUsb(PPDMUSBINS pUsbIns) { Assert(pUsbIns->Internal.s.fVMSuspended); if (pUsbIns->pReg->pfnVMPowerOn) { LogFlow(("PDMR3PowerOn: Notifying - device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance)); int rc = VINF_SUCCESS; pUsbIns->pReg->pfnVMPowerOn(pUsbIns); if (RT_FAILURE(rc)) { LogRel(("PDMR3PowerOn: Device '%s'/%d -> %Rrc\n", pUsbIns->pReg->szName, pUsbIns->iInstance, rc)); return rc; } } pUsbIns->Internal.s.fVMSuspended = false; return VINF_SUCCESS; } /** * Worker for PDMR3PowerOn that deals with one device instance. * * @returns VBox status code. * @param pDevIns The device instance. */ DECLINLINE(int) pdmR3PowerOnDev(PPDMDEVINS pDevIns) { Assert(pDevIns->Internal.s.fIntFlags & PDMDEVINSINT_FLAGS_SUSPENDED); if (pDevIns->pReg->pfnPowerOn) { LogFlow(("PDMR3PowerOn: Notifying - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance)); PDMCritSectEnter(pDevIns->pCritSectRoR3, VERR_IGNORED); int rc = VINF_SUCCESS; pDevIns->pReg->pfnPowerOn(pDevIns); PDMCritSectLeave(pDevIns->pCritSectRoR3); if (RT_FAILURE(rc)) { LogRel(("PDMR3PowerOn: Device '%s'/%d -> %Rrc\n", pDevIns->pReg->szName, pDevIns->iInstance, rc)); return rc; } } pDevIns->Internal.s.fIntFlags &= ~PDMDEVINSINT_FLAGS_SUSPENDED; return VINF_SUCCESS; } /** * This function will notify all the devices and their * attached drivers about the VM now being powered on. * * @param pVM The cross context VM structure. */ VMMR3DECL(void) PDMR3PowerOn(PVM pVM) { LogFlow(("PDMR3PowerOn:\n")); /* * Iterate thru the device instances and USB device instances, * processing the drivers associated with those. */ int rc = VINF_SUCCESS; for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns && RT_SUCCESS(rc); pDevIns = pDevIns->Internal.s.pNextR3) { for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun && RT_SUCCESS(rc); pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns && RT_SUCCESS(rc); pDrvIns = pDrvIns->Internal.s.pDown) rc = pdmR3PowerOnDrv(pDrvIns, pDevIns->pReg->szName, pDevIns->iInstance, pLun->iLun); if (RT_SUCCESS(rc)) rc = pdmR3PowerOnDev(pDevIns); } #ifdef VBOX_WITH_USB for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns && RT_SUCCESS(rc); pUsbIns = pUsbIns->Internal.s.pNext) { for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun && RT_SUCCESS(rc); pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns && RT_SUCCESS(rc); pDrvIns = pDrvIns->Internal.s.pDown) rc = pdmR3PowerOnDrv(pDrvIns, pUsbIns->pReg->szName, pUsbIns->iInstance, pLun->iLun); if (RT_SUCCESS(rc)) rc = pdmR3PowerOnUsb(pUsbIns); } #endif #ifdef VBOX_WITH_PDM_ASYNC_COMPLETION pdmR3AsyncCompletionResume(pVM); #endif /* * Resume all threads. */ if (RT_SUCCESS(rc)) pdmR3ThreadResumeAll(pVM); /* * On failure, clean up via PDMR3Suspend. */ if (RT_FAILURE(rc)) PDMR3Suspend(pVM); LogFlow(("PDMR3PowerOn: returns %Rrc\n", rc)); return /*rc*/; } /** * Initializes the asynchronous notifi stats structure. * * @param pThis The asynchronous notifification stats. * @param pszOp The name of the operation. */ static void pdmR3NotifyAsyncInit(PPDMNOTIFYASYNCSTATS pThis, const char *pszOp) { pThis->uStartNsTs = RTTimeNanoTS(); pThis->cNsElapsedNextLog = 0; pThis->cLoops = 0; pThis->cAsync = 0; pThis->pszOp = pszOp; pThis->offList = 0; pThis->szList[0] = '\0'; } /** * Begin a new loop, prepares to gather new stats. * * @param pThis The asynchronous notifification stats. */ static void pdmR3NotifyAsyncBeginLoop(PPDMNOTIFYASYNCSTATS pThis) { pThis->cLoops++; pThis->cAsync = 0; pThis->offList = 0; pThis->szList[0] = '\0'; } /** * Records a device or USB device with a pending asynchronous notification. * * @param pThis The asynchronous notifification stats. * @param pszName The name of the thing. * @param iInstance The instance number. */ static void pdmR3NotifyAsyncAdd(PPDMNOTIFYASYNCSTATS pThis, const char *pszName, uint32_t iInstance) { pThis->cAsync++; if (pThis->offList < sizeof(pThis->szList) - 4) pThis->offList += RTStrPrintf(&pThis->szList[pThis->offList], sizeof(pThis->szList) - pThis->offList, pThis->offList == 0 ? "%s/%u" : ", %s/%u", pszName, iInstance); } /** * Records the asynchronous completition of a reset, suspend or power off. * * @param pThis The asynchronous notifification stats. * @param pszDrvName The driver name. * @param iDrvInstance The driver instance number. * @param pszDevName The device or USB device name. * @param iDevInstance The device or USB device instance number. * @param iLun The LUN. */ static void pdmR3NotifyAsyncAddDrv(PPDMNOTIFYASYNCSTATS pThis, const char *pszDrvName, uint32_t iDrvInstance, const char *pszDevName, uint32_t iDevInstance, uint32_t iLun) { pThis->cAsync++; if (pThis->offList < sizeof(pThis->szList) - 8) pThis->offList += RTStrPrintf(&pThis->szList[pThis->offList], sizeof(pThis->szList) - pThis->offList, pThis->offList == 0 ? "%s/%u/%u/%s/%u" : ", %s/%u/%u/%s/%u", pszDevName, iDevInstance, iLun, pszDrvName, iDrvInstance); } /** * Log the stats. * * @param pThis The asynchronous notifification stats. */ static void pdmR3NotifyAsyncLog(PPDMNOTIFYASYNCSTATS pThis) { /* * Return if we shouldn't log at this point. * We log with an internval increasing from 0 sec to 60 sec. */ if (!pThis->cAsync) return; uint64_t cNsElapsed = RTTimeNanoTS() - pThis->uStartNsTs; if (cNsElapsed < pThis->cNsElapsedNextLog) return; if (pThis->cNsElapsedNextLog == 0) pThis->cNsElapsedNextLog = RT_NS_1SEC; else if (pThis->cNsElapsedNextLog >= RT_NS_1MIN / 2) pThis->cNsElapsedNextLog = RT_NS_1MIN; else pThis->cNsElapsedNextLog *= 2; /* * Do the logging. */ LogRel(("%s: after %5llu ms, %u loops: %u async tasks - %s\n", pThis->pszOp, cNsElapsed / RT_NS_1MS, pThis->cLoops, pThis->cAsync, pThis->szList)); } /** * Wait for events and process pending requests. * * @param pThis The asynchronous notifification stats. * @param pVM The cross context VM structure. */ static void pdmR3NotifyAsyncWaitAndProcessRequests(PPDMNOTIFYASYNCSTATS pThis, PVM pVM) { VM_ASSERT_EMT0(pVM); int rc = VMR3AsyncPdmNotificationWaitU(&pVM->pUVM->aCpus[0]); AssertReleaseMsg(rc == VINF_SUCCESS, ("%Rrc - %s - %s\n", rc, pThis->pszOp, pThis->szList)); rc = VMR3ReqProcessU(pVM->pUVM, VMCPUID_ANY, true /*fPriorityOnly*/); AssertReleaseMsg(rc == VINF_SUCCESS, ("%Rrc - %s - %s\n", rc, pThis->pszOp, pThis->szList)); rc = VMR3ReqProcessU(pVM->pUVM, 0/*idDstCpu*/, true /*fPriorityOnly*/); AssertReleaseMsg(rc == VINF_SUCCESS, ("%Rrc - %s - %s\n", rc, pThis->pszOp, pThis->szList)); } /** * Worker for PDMR3Reset that deals with one driver. * * @param pDrvIns The driver instance. * @param pAsync The structure for recording asynchronous * notification tasks. * @param pszDevName The parent device name. * @param iDevInstance The parent device instance number. * @param iLun The parent LUN number. */ DECLINLINE(bool) pdmR3ResetDrv(PPDMDRVINS pDrvIns, PPDMNOTIFYASYNCSTATS pAsync, const char *pszDevName, uint32_t iDevInstance, uint32_t iLun) { if (!pDrvIns->Internal.s.fVMReset) { pDrvIns->Internal.s.fVMReset = true; if (pDrvIns->pReg->pfnReset) { if (!pDrvIns->Internal.s.pfnAsyncNotify) { LogFlow(("PDMR3Reset: Notifying - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance)); pDrvIns->pReg->pfnReset(pDrvIns); if (pDrvIns->Internal.s.pfnAsyncNotify) LogFlow(("PDMR3Reset: Async notification started - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance)); } else if (pDrvIns->Internal.s.pfnAsyncNotify(pDrvIns)) { LogFlow(("PDMR3Reset: Async notification completed - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance)); pDrvIns->Internal.s.pfnAsyncNotify = NULL; } if (pDrvIns->Internal.s.pfnAsyncNotify) { pDrvIns->Internal.s.fVMReset = false; pdmR3NotifyAsyncAddDrv(pAsync, pDrvIns->Internal.s.pDrv->pReg->szName, pDrvIns->iInstance, pszDevName, iDevInstance, iLun); return false; } } } return true; } /** * Worker for PDMR3Reset that deals with one USB device instance. * * @param pUsbIns The USB device instance. * @param pAsync The structure for recording asynchronous * notification tasks. */ DECLINLINE(void) pdmR3ResetUsb(PPDMUSBINS pUsbIns, PPDMNOTIFYASYNCSTATS pAsync) { if (!pUsbIns->Internal.s.fVMReset) { pUsbIns->Internal.s.fVMReset = true; if (pUsbIns->pReg->pfnVMReset) { if (!pUsbIns->Internal.s.pfnAsyncNotify) { LogFlow(("PDMR3Reset: Notifying - device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance)); pUsbIns->pReg->pfnVMReset(pUsbIns); if (pUsbIns->Internal.s.pfnAsyncNotify) LogFlow(("PDMR3Reset: Async notification started - device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance)); } else if (pUsbIns->Internal.s.pfnAsyncNotify(pUsbIns)) { LogFlow(("PDMR3Reset: Async notification completed - device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance)); pUsbIns->Internal.s.pfnAsyncNotify = NULL; } if (pUsbIns->Internal.s.pfnAsyncNotify) { pUsbIns->Internal.s.fVMReset = false; pdmR3NotifyAsyncAdd(pAsync, pUsbIns->Internal.s.pUsbDev->pReg->szName, pUsbIns->iInstance); } } } } /** * Worker for PDMR3Reset that deals with one device instance. * * @param pDevIns The device instance. * @param pAsync The structure for recording asynchronous * notification tasks. */ DECLINLINE(void) pdmR3ResetDev(PPDMDEVINS pDevIns, PPDMNOTIFYASYNCSTATS pAsync) { if (!(pDevIns->Internal.s.fIntFlags & PDMDEVINSINT_FLAGS_RESET)) { pDevIns->Internal.s.fIntFlags |= PDMDEVINSINT_FLAGS_RESET; if (pDevIns->pReg->pfnReset) { uint64_t cNsElapsed = RTTimeNanoTS(); PDMCritSectEnter(pDevIns->pCritSectRoR3, VERR_IGNORED); if (!pDevIns->Internal.s.pfnAsyncNotify) { LogFlow(("PDMR3Reset: Notifying - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance)); pDevIns->pReg->pfnReset(pDevIns); if (pDevIns->Internal.s.pfnAsyncNotify) LogFlow(("PDMR3Reset: Async notification started - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance)); } else if (pDevIns->Internal.s.pfnAsyncNotify(pDevIns)) { LogFlow(("PDMR3Reset: Async notification completed - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance)); pDevIns->Internal.s.pfnAsyncNotify = NULL; } if (pDevIns->Internal.s.pfnAsyncNotify) { pDevIns->Internal.s.fIntFlags &= ~PDMDEVINSINT_FLAGS_RESET; pdmR3NotifyAsyncAdd(pAsync, pDevIns->Internal.s.pDevR3->pReg->szName, pDevIns->iInstance); } PDMCritSectLeave(pDevIns->pCritSectRoR3); cNsElapsed = RTTimeNanoTS() - cNsElapsed; if (cNsElapsed >= PDMSUSPEND_WARN_AT_NS) LogRel(("PDMR3Reset: Device '%s'/%d took %'llu ns to reset\n", pDevIns->pReg->szName, pDevIns->iInstance, cNsElapsed)); } } } /** * Resets a virtual CPU. * * Used by PDMR3Reset and CPU hot plugging. * * @param pVCpu The cross context virtual CPU structure. */ VMMR3_INT_DECL(void) PDMR3ResetCpu(PVMCPU pVCpu) { VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_APIC); VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_PIC); VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_NMI); VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_SMI); } /** * This function will notify all the devices and their attached drivers about * the VM now being reset. * * @param pVM The cross context VM structure. */ VMMR3_INT_DECL(void) PDMR3Reset(PVM pVM) { LogFlow(("PDMR3Reset:\n")); /* * Clear all the reset flags. */ for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) { pDevIns->Internal.s.fIntFlags &= ~PDMDEVINSINT_FLAGS_RESET; for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown) pDrvIns->Internal.s.fVMReset = false; } #ifdef VBOX_WITH_USB for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext) { pUsbIns->Internal.s.fVMReset = false; for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun; pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown) pDrvIns->Internal.s.fVMReset = false; } #endif /* * The outer loop repeats until there are no more async requests. */ PDMNOTIFYASYNCSTATS Async; pdmR3NotifyAsyncInit(&Async, "PDMR3Reset"); for (;;) { pdmR3NotifyAsyncBeginLoop(&Async); /* * Iterate thru the device instances and USB device instances, * processing the drivers associated with those. */ for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) { unsigned const cAsyncStart = Async.cAsync; if (pDevIns->pReg->fFlags & PDM_DEVREG_FLAGS_FIRST_RESET_NOTIFICATION) pdmR3ResetDev(pDevIns, &Async); if (Async.cAsync == cAsyncStart) for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown) if (!pdmR3ResetDrv(pDrvIns, &Async, pDevIns->pReg->szName, pDevIns->iInstance, pLun->iLun)) break; if ( Async.cAsync == cAsyncStart && !(pDevIns->pReg->fFlags & PDM_DEVREG_FLAGS_FIRST_RESET_NOTIFICATION)) pdmR3ResetDev(pDevIns, &Async); } #ifdef VBOX_WITH_USB for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext) { unsigned const cAsyncStart = Async.cAsync; for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun; pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown) if (!pdmR3ResetDrv(pDrvIns, &Async, pUsbIns->pReg->szName, pUsbIns->iInstance, pLun->iLun)) break; if (Async.cAsync == cAsyncStart) pdmR3ResetUsb(pUsbIns, &Async); } #endif if (!Async.cAsync) break; pdmR3NotifyAsyncLog(&Async); pdmR3NotifyAsyncWaitAndProcessRequests(&Async, pVM); } /* * Clear all pending interrupts and DMA operations. */ for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++) PDMR3ResetCpu(&pVM->aCpus[idCpu]); VM_FF_CLEAR(pVM, VM_FF_PDM_DMA); LogFlow(("PDMR3Reset: returns void\n")); } /** * This function will tell all the devices to setup up their memory structures * after VM construction and after VM reset. * * @param pVM The cross context VM structure. * @param fAtReset Indicates the context, after reset if @c true or after * construction if @c false. */ VMMR3_INT_DECL(void) PDMR3MemSetup(PVM pVM, bool fAtReset) { LogFlow(("PDMR3MemSetup: fAtReset=%RTbool\n", fAtReset)); PDMDEVMEMSETUPCTX const enmCtx = fAtReset ? PDMDEVMEMSETUPCTX_AFTER_RESET : PDMDEVMEMSETUPCTX_AFTER_CONSTRUCTION; /* * Iterate thru the device instances and work the callback. */ for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) if (pDevIns->pReg->pfnMemSetup) { PDMCritSectEnter(pDevIns->pCritSectRoR3, VERR_IGNORED); pDevIns->pReg->pfnMemSetup(pDevIns, enmCtx); PDMCritSectLeave(pDevIns->pCritSectRoR3); } LogFlow(("PDMR3MemSetup: returns void\n")); } /** * Retrieves and resets the info left behind by PDMDevHlpVMReset. * * @returns True if hard reset, false if soft reset. * @param pVM The cross context VM structure. * @param fOverride If non-zero, the override flags will be used instead * of the reset flags kept by PDM. (For triple faults.) * @param pfResetFlags Where to return the reset flags (PDMVMRESET_F_XXX). * @thread EMT */ VMMR3_INT_DECL(bool) PDMR3GetResetInfo(PVM pVM, uint32_t fOverride, uint32_t *pfResetFlags) { VM_ASSERT_EMT(pVM); /* * Get the reset flags. */ uint32_t fResetFlags; fResetFlags = ASMAtomicXchgU32(&pVM->pdm.s.fResetFlags, 0); if (fOverride) fResetFlags = fOverride; *pfResetFlags = fResetFlags; /* * To try avoid trouble, we never ever do soft/warm resets on SMP systems * with more than CPU #0 active. However, if only one CPU is active we * will ask the firmware what it wants us to do (because the firmware may * depend on the VMM doing a lot of what is normally its responsibility, * like clearing memory). */ bool fOtherCpusActive = false; VMCPUID iCpu = pVM->cCpus; while (iCpu-- > 1) { EMSTATE enmState = EMGetState(&pVM->aCpus[iCpu]); if ( enmState != EMSTATE_WAIT_SIPI && enmState != EMSTATE_NONE) { fOtherCpusActive = true; break; } } bool fHardReset = fOtherCpusActive || (fResetFlags & PDMVMRESET_F_SRC_MASK) < PDMVMRESET_F_LAST_ALWAYS_HARD || !pVM->pdm.s.pFirmware || pVM->pdm.s.pFirmware->Reg.pfnIsHardReset(pVM->pdm.s.pFirmware->pDevIns, fResetFlags); Log(("PDMR3GetResetInfo: returns fHardReset=%RTbool fResetFlags=%#x\n", fHardReset, fResetFlags)); return fHardReset; } /** * Performs a soft reset of devices. * * @param pVM The cross context VM structure. * @param fResetFlags PDMVMRESET_F_XXX. */ VMMR3_INT_DECL(void) PDMR3SoftReset(PVM pVM, uint32_t fResetFlags) { LogFlow(("PDMR3SoftReset: fResetFlags=%#x\n", fResetFlags)); /* * Iterate thru the device instances and work the callback. */ for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) if (pDevIns->pReg->pfnSoftReset) { PDMCritSectEnter(pDevIns->pCritSectRoR3, VERR_IGNORED); pDevIns->pReg->pfnSoftReset(pDevIns, fResetFlags); PDMCritSectLeave(pDevIns->pCritSectRoR3); } LogFlow(("PDMR3SoftReset: returns void\n")); } /** * Worker for PDMR3Suspend that deals with one driver. * * @param pDrvIns The driver instance. * @param pAsync The structure for recording asynchronous * notification tasks. * @param pszDevName The parent device name. * @param iDevInstance The parent device instance number. * @param iLun The parent LUN number. */ DECLINLINE(bool) pdmR3SuspendDrv(PPDMDRVINS pDrvIns, PPDMNOTIFYASYNCSTATS pAsync, const char *pszDevName, uint32_t iDevInstance, uint32_t iLun) { if (!pDrvIns->Internal.s.fVMSuspended) { pDrvIns->Internal.s.fVMSuspended = true; if (pDrvIns->pReg->pfnSuspend) { uint64_t cNsElapsed = RTTimeNanoTS(); if (!pDrvIns->Internal.s.pfnAsyncNotify) { LogFlow(("PDMR3Suspend: Notifying - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance)); pDrvIns->pReg->pfnSuspend(pDrvIns); if (pDrvIns->Internal.s.pfnAsyncNotify) LogFlow(("PDMR3Suspend: Async notification started - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance)); } else if (pDrvIns->Internal.s.pfnAsyncNotify(pDrvIns)) { LogFlow(("PDMR3Suspend: Async notification completed - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance)); pDrvIns->Internal.s.pfnAsyncNotify = NULL; } cNsElapsed = RTTimeNanoTS() - cNsElapsed; if (cNsElapsed >= PDMSUSPEND_WARN_AT_NS) LogRel(("PDMR3Suspend: Driver '%s'/%d on LUN#%d of device '%s'/%d took %'llu ns to suspend\n", pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance, cNsElapsed)); if (pDrvIns->Internal.s.pfnAsyncNotify) { pDrvIns->Internal.s.fVMSuspended = false; pdmR3NotifyAsyncAddDrv(pAsync, pDrvIns->Internal.s.pDrv->pReg->szName, pDrvIns->iInstance, pszDevName, iDevInstance, iLun); return false; } } } return true; } /** * Worker for PDMR3Suspend that deals with one USB device instance. * * @param pUsbIns The USB device instance. * @param pAsync The structure for recording asynchronous * notification tasks. */ DECLINLINE(void) pdmR3SuspendUsb(PPDMUSBINS pUsbIns, PPDMNOTIFYASYNCSTATS pAsync) { if (!pUsbIns->Internal.s.fVMSuspended) { pUsbIns->Internal.s.fVMSuspended = true; if (pUsbIns->pReg->pfnVMSuspend) { uint64_t cNsElapsed = RTTimeNanoTS(); if (!pUsbIns->Internal.s.pfnAsyncNotify) { LogFlow(("PDMR3Suspend: Notifying - USB device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance)); pUsbIns->pReg->pfnVMSuspend(pUsbIns); if (pUsbIns->Internal.s.pfnAsyncNotify) LogFlow(("PDMR3Suspend: Async notification started - USB device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance)); } else if (pUsbIns->Internal.s.pfnAsyncNotify(pUsbIns)) { LogFlow(("PDMR3Suspend: Async notification completed - USB device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance)); pUsbIns->Internal.s.pfnAsyncNotify = NULL; } if (pUsbIns->Internal.s.pfnAsyncNotify) { pUsbIns->Internal.s.fVMSuspended = false; pdmR3NotifyAsyncAdd(pAsync, pUsbIns->Internal.s.pUsbDev->pReg->szName, pUsbIns->iInstance); } cNsElapsed = RTTimeNanoTS() - cNsElapsed; if (cNsElapsed >= PDMSUSPEND_WARN_AT_NS) LogRel(("PDMR3Suspend: USB device '%s'/%d took %'llu ns to suspend\n", pUsbIns->pReg->szName, pUsbIns->iInstance, cNsElapsed)); } } } /** * Worker for PDMR3Suspend that deals with one device instance. * * @param pDevIns The device instance. * @param pAsync The structure for recording asynchronous * notification tasks. */ DECLINLINE(void) pdmR3SuspendDev(PPDMDEVINS pDevIns, PPDMNOTIFYASYNCSTATS pAsync) { if (!(pDevIns->Internal.s.fIntFlags & PDMDEVINSINT_FLAGS_SUSPENDED)) { pDevIns->Internal.s.fIntFlags |= PDMDEVINSINT_FLAGS_SUSPENDED; if (pDevIns->pReg->pfnSuspend) { uint64_t cNsElapsed = RTTimeNanoTS(); PDMCritSectEnter(pDevIns->pCritSectRoR3, VERR_IGNORED); if (!pDevIns->Internal.s.pfnAsyncNotify) { LogFlow(("PDMR3Suspend: Notifying - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance)); pDevIns->pReg->pfnSuspend(pDevIns); if (pDevIns->Internal.s.pfnAsyncNotify) LogFlow(("PDMR3Suspend: Async notification started - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance)); } else if (pDevIns->Internal.s.pfnAsyncNotify(pDevIns)) { LogFlow(("PDMR3Suspend: Async notification completed - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance)); pDevIns->Internal.s.pfnAsyncNotify = NULL; } if (pDevIns->Internal.s.pfnAsyncNotify) { pDevIns->Internal.s.fIntFlags &= ~PDMDEVINSINT_FLAGS_SUSPENDED; pdmR3NotifyAsyncAdd(pAsync, pDevIns->Internal.s.pDevR3->pReg->szName, pDevIns->iInstance); } PDMCritSectLeave(pDevIns->pCritSectRoR3); cNsElapsed = RTTimeNanoTS() - cNsElapsed; if (cNsElapsed >= PDMSUSPEND_WARN_AT_NS) LogRel(("PDMR3Suspend: Device '%s'/%d took %'llu ns to suspend\n", pDevIns->pReg->szName, pDevIns->iInstance, cNsElapsed)); } } } /** * This function will notify all the devices and their attached drivers about * the VM now being suspended. * * @param pVM The cross context VM structure. * @thread EMT(0) */ VMMR3_INT_DECL(void) PDMR3Suspend(PVM pVM) { LogFlow(("PDMR3Suspend:\n")); VM_ASSERT_EMT0(pVM); uint64_t cNsElapsed = RTTimeNanoTS(); /* * The outer loop repeats until there are no more async requests. * * Note! We depend on the suspended indicators to be in the desired state * and we do not reset them before starting because this allows * PDMR3PowerOn and PDMR3Resume to use PDMR3Suspend for cleaning up * on failure. */ PDMNOTIFYASYNCSTATS Async; pdmR3NotifyAsyncInit(&Async, "PDMR3Suspend"); for (;;) { pdmR3NotifyAsyncBeginLoop(&Async); /* * Iterate thru the device instances and USB device instances, * processing the drivers associated with those. * * The attached drivers are normally processed first. Some devices * (like DevAHCI) though needs to be notified before the drivers so * that it doesn't kick off any new requests after the drivers stopped * taking any. (DrvVD changes to read-only in this particular case.) */ for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) { unsigned const cAsyncStart = Async.cAsync; if (pDevIns->pReg->fFlags & PDM_DEVREG_FLAGS_FIRST_SUSPEND_NOTIFICATION) pdmR3SuspendDev(pDevIns, &Async); if (Async.cAsync == cAsyncStart) for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown) if (!pdmR3SuspendDrv(pDrvIns, &Async, pDevIns->pReg->szName, pDevIns->iInstance, pLun->iLun)) break; if ( Async.cAsync == cAsyncStart && !(pDevIns->pReg->fFlags & PDM_DEVREG_FLAGS_FIRST_SUSPEND_NOTIFICATION)) pdmR3SuspendDev(pDevIns, &Async); } #ifdef VBOX_WITH_USB for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext) { unsigned const cAsyncStart = Async.cAsync; for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun; pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown) if (!pdmR3SuspendDrv(pDrvIns, &Async, pUsbIns->pReg->szName, pUsbIns->iInstance, pLun->iLun)) break; if (Async.cAsync == cAsyncStart) pdmR3SuspendUsb(pUsbIns, &Async); } #endif if (!Async.cAsync) break; pdmR3NotifyAsyncLog(&Async); pdmR3NotifyAsyncWaitAndProcessRequests(&Async, pVM); } /* * Suspend all threads. */ pdmR3ThreadSuspendAll(pVM); cNsElapsed = RTTimeNanoTS() - cNsElapsed; LogRel(("PDMR3Suspend: %'llu ns run time\n", cNsElapsed)); } /** * Worker for PDMR3Resume that deals with one driver. * * @param pDrvIns The driver instance. * @param pszDevName The parent device name. * @param iDevInstance The parent device instance number. * @param iLun The parent LUN number. */ DECLINLINE(int) pdmR3ResumeDrv(PPDMDRVINS pDrvIns, const char *pszDevName, uint32_t iDevInstance, uint32_t iLun) { Assert(pDrvIns->Internal.s.fVMSuspended); if (pDrvIns->pReg->pfnResume) { LogFlow(("PDMR3Resume: Notifying - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance)); int rc = VINF_SUCCESS; pDrvIns->pReg->pfnResume(pDrvIns); if (RT_FAILURE(rc)) { LogRel(("PDMR3Resume: Driver '%s'/%d on LUN#%d of device '%s'/%d -> %Rrc\n", pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance, rc)); return rc; } } pDrvIns->Internal.s.fVMSuspended = false; return VINF_SUCCESS; } /** * Worker for PDMR3Resume that deals with one USB device instance. * * @returns VBox status code. * @param pUsbIns The USB device instance. */ DECLINLINE(int) pdmR3ResumeUsb(PPDMUSBINS pUsbIns) { Assert(pUsbIns->Internal.s.fVMSuspended); if (pUsbIns->pReg->pfnVMResume) { LogFlow(("PDMR3Resume: Notifying - device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance)); int rc = VINF_SUCCESS; pUsbIns->pReg->pfnVMResume(pUsbIns); if (RT_FAILURE(rc)) { LogRel(("PDMR3Resume: Device '%s'/%d -> %Rrc\n", pUsbIns->pReg->szName, pUsbIns->iInstance, rc)); return rc; } } pUsbIns->Internal.s.fVMSuspended = false; return VINF_SUCCESS; } /** * Worker for PDMR3Resume that deals with one device instance. * * @returns VBox status code. * @param pDevIns The device instance. */ DECLINLINE(int) pdmR3ResumeDev(PPDMDEVINS pDevIns) { Assert(pDevIns->Internal.s.fIntFlags & PDMDEVINSINT_FLAGS_SUSPENDED); if (pDevIns->pReg->pfnResume) { LogFlow(("PDMR3Resume: Notifying - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance)); PDMCritSectEnter(pDevIns->pCritSectRoR3, VERR_IGNORED); int rc = VINF_SUCCESS; pDevIns->pReg->pfnResume(pDevIns); PDMCritSectLeave(pDevIns->pCritSectRoR3); if (RT_FAILURE(rc)) { LogRel(("PDMR3Resume: Device '%s'/%d -> %Rrc\n", pDevIns->pReg->szName, pDevIns->iInstance, rc)); return rc; } } pDevIns->Internal.s.fIntFlags &= ~PDMDEVINSINT_FLAGS_SUSPENDED; return VINF_SUCCESS; } /** * This function will notify all the devices and their * attached drivers about the VM now being resumed. * * @param pVM The cross context VM structure. */ VMMR3_INT_DECL(void) PDMR3Resume(PVM pVM) { LogFlow(("PDMR3Resume:\n")); /* * Iterate thru the device instances and USB device instances, * processing the drivers associated with those. */ int rc = VINF_SUCCESS; for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns && RT_SUCCESS(rc); pDevIns = pDevIns->Internal.s.pNextR3) { for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun && RT_SUCCESS(rc); pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns && RT_SUCCESS(rc); pDrvIns = pDrvIns->Internal.s.pDown) rc = pdmR3ResumeDrv(pDrvIns, pDevIns->pReg->szName, pDevIns->iInstance, pLun->iLun); if (RT_SUCCESS(rc)) rc = pdmR3ResumeDev(pDevIns); } #ifdef VBOX_WITH_USB for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns && RT_SUCCESS(rc); pUsbIns = pUsbIns->Internal.s.pNext) { for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun && RT_SUCCESS(rc); pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns && RT_SUCCESS(rc); pDrvIns = pDrvIns->Internal.s.pDown) rc = pdmR3ResumeDrv(pDrvIns, pUsbIns->pReg->szName, pUsbIns->iInstance, pLun->iLun); if (RT_SUCCESS(rc)) rc = pdmR3ResumeUsb(pUsbIns); } #endif /* * Resume all threads. */ if (RT_SUCCESS(rc)) pdmR3ThreadResumeAll(pVM); /* * Resume the block cache. */ if (RT_SUCCESS(rc)) pdmR3BlkCacheResume(pVM); /* * On failure, clean up via PDMR3Suspend. */ if (RT_FAILURE(rc)) PDMR3Suspend(pVM); LogFlow(("PDMR3Resume: returns %Rrc\n", rc)); return /*rc*/; } /** * Worker for PDMR3PowerOff that deals with one driver. * * @param pDrvIns The driver instance. * @param pAsync The structure for recording asynchronous * notification tasks. * @param pszDevName The parent device name. * @param iDevInstance The parent device instance number. * @param iLun The parent LUN number. */ DECLINLINE(bool) pdmR3PowerOffDrv(PPDMDRVINS pDrvIns, PPDMNOTIFYASYNCSTATS pAsync, const char *pszDevName, uint32_t iDevInstance, uint32_t iLun) { if (!pDrvIns->Internal.s.fVMSuspended) { pDrvIns->Internal.s.fVMSuspended = true; if (pDrvIns->pReg->pfnPowerOff) { uint64_t cNsElapsed = RTTimeNanoTS(); if (!pDrvIns->Internal.s.pfnAsyncNotify) { LogFlow(("PDMR3PowerOff: Notifying - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance)); pDrvIns->pReg->pfnPowerOff(pDrvIns); if (pDrvIns->Internal.s.pfnAsyncNotify) LogFlow(("PDMR3PowerOff: Async notification started - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance)); } else if (pDrvIns->Internal.s.pfnAsyncNotify(pDrvIns)) { LogFlow(("PDMR3PowerOff: Async notification completed - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance)); pDrvIns->Internal.s.pfnAsyncNotify = NULL; } cNsElapsed = RTTimeNanoTS() - cNsElapsed; if (cNsElapsed >= PDMPOWEROFF_WARN_AT_NS) LogRel(("PDMR3PowerOff: Driver '%s'/%d on LUN#%d of device '%s'/%d took %'llu ns to power off\n", pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance, cNsElapsed)); if (pDrvIns->Internal.s.pfnAsyncNotify) { pDrvIns->Internal.s.fVMSuspended = false; pdmR3NotifyAsyncAddDrv(pAsync, pDrvIns->Internal.s.pDrv->pReg->szName, pDrvIns->iInstance, pszDevName, iDevInstance, iLun); return false; } } } return true; } /** * Worker for PDMR3PowerOff that deals with one USB device instance. * * @param pUsbIns The USB device instance. * @param pAsync The structure for recording asynchronous * notification tasks. */ DECLINLINE(void) pdmR3PowerOffUsb(PPDMUSBINS pUsbIns, PPDMNOTIFYASYNCSTATS pAsync) { if (!pUsbIns->Internal.s.fVMSuspended) { pUsbIns->Internal.s.fVMSuspended = true; if (pUsbIns->pReg->pfnVMPowerOff) { uint64_t cNsElapsed = RTTimeNanoTS(); if (!pUsbIns->Internal.s.pfnAsyncNotify) { LogFlow(("PDMR3PowerOff: Notifying - USB device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance)); pUsbIns->pReg->pfnVMPowerOff(pUsbIns); if (pUsbIns->Internal.s.pfnAsyncNotify) LogFlow(("PDMR3PowerOff: Async notification started - USB device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance)); } else if (pUsbIns->Internal.s.pfnAsyncNotify(pUsbIns)) { LogFlow(("PDMR3PowerOff: Async notification completed - USB device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance)); pUsbIns->Internal.s.pfnAsyncNotify = NULL; } if (pUsbIns->Internal.s.pfnAsyncNotify) { pUsbIns->Internal.s.fVMSuspended = false; pdmR3NotifyAsyncAdd(pAsync, pUsbIns->Internal.s.pUsbDev->pReg->szName, pUsbIns->iInstance); } cNsElapsed = RTTimeNanoTS() - cNsElapsed; if (cNsElapsed >= PDMPOWEROFF_WARN_AT_NS) LogRel(("PDMR3PowerOff: USB device '%s'/%d took %'llu ns to power off\n", pUsbIns->pReg->szName, pUsbIns->iInstance, cNsElapsed)); } } } /** * Worker for PDMR3PowerOff that deals with one device instance. * * @param pDevIns The device instance. * @param pAsync The structure for recording asynchronous * notification tasks. */ DECLINLINE(void) pdmR3PowerOffDev(PPDMDEVINS pDevIns, PPDMNOTIFYASYNCSTATS pAsync) { if (!(pDevIns->Internal.s.fIntFlags & PDMDEVINSINT_FLAGS_SUSPENDED)) { pDevIns->Internal.s.fIntFlags |= PDMDEVINSINT_FLAGS_SUSPENDED; if (pDevIns->pReg->pfnPowerOff) { uint64_t cNsElapsed = RTTimeNanoTS(); PDMCritSectEnter(pDevIns->pCritSectRoR3, VERR_IGNORED); if (!pDevIns->Internal.s.pfnAsyncNotify) { LogFlow(("PDMR3PowerOff: Notifying - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance)); pDevIns->pReg->pfnPowerOff(pDevIns); if (pDevIns->Internal.s.pfnAsyncNotify) LogFlow(("PDMR3PowerOff: Async notification started - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance)); } else if (pDevIns->Internal.s.pfnAsyncNotify(pDevIns)) { LogFlow(("PDMR3PowerOff: Async notification completed - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance)); pDevIns->Internal.s.pfnAsyncNotify = NULL; } if (pDevIns->Internal.s.pfnAsyncNotify) { pDevIns->Internal.s.fIntFlags &= ~PDMDEVINSINT_FLAGS_SUSPENDED; pdmR3NotifyAsyncAdd(pAsync, pDevIns->Internal.s.pDevR3->pReg->szName, pDevIns->iInstance); } PDMCritSectLeave(pDevIns->pCritSectRoR3); cNsElapsed = RTTimeNanoTS() - cNsElapsed; if (cNsElapsed >= PDMPOWEROFF_WARN_AT_NS) LogFlow(("PDMR3PowerOff: Device '%s'/%d took %'llu ns to power off\n", pDevIns->pReg->szName, pDevIns->iInstance, cNsElapsed)); } } } /** * This function will notify all the devices and their * attached drivers about the VM being powered off. * * @param pVM The cross context VM structure. */ VMMR3DECL(void) PDMR3PowerOff(PVM pVM) { LogFlow(("PDMR3PowerOff:\n")); uint64_t cNsElapsed = RTTimeNanoTS(); /* * Clear the suspended flags on all devices and drivers first because they * might have been set during a suspend but the power off callbacks should * be called in any case. */ for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) { pDevIns->Internal.s.fIntFlags &= ~PDMDEVINSINT_FLAGS_SUSPENDED; for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown) pDrvIns->Internal.s.fVMSuspended = false; } #ifdef VBOX_WITH_USB for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext) { pUsbIns->Internal.s.fVMSuspended = false; for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun; pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown) pDrvIns->Internal.s.fVMSuspended = false; } #endif /* * The outer loop repeats until there are no more async requests. */ PDMNOTIFYASYNCSTATS Async; pdmR3NotifyAsyncInit(&Async, "PDMR3PowerOff"); for (;;) { pdmR3NotifyAsyncBeginLoop(&Async); /* * Iterate thru the device instances and USB device instances, * processing the drivers associated with those. * * The attached drivers are normally processed first. Some devices * (like DevAHCI) though needs to be notified before the drivers so * that it doesn't kick off any new requests after the drivers stopped * taking any. (DrvVD changes to read-only in this particular case.) */ for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) { unsigned const cAsyncStart = Async.cAsync; if (pDevIns->pReg->fFlags & PDM_DEVREG_FLAGS_FIRST_POWEROFF_NOTIFICATION) pdmR3PowerOffDev(pDevIns, &Async); if (Async.cAsync == cAsyncStart) for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown) if (!pdmR3PowerOffDrv(pDrvIns, &Async, pDevIns->pReg->szName, pDevIns->iInstance, pLun->iLun)) break; if ( Async.cAsync == cAsyncStart && !(pDevIns->pReg->fFlags & PDM_DEVREG_FLAGS_FIRST_POWEROFF_NOTIFICATION)) pdmR3PowerOffDev(pDevIns, &Async); } #ifdef VBOX_WITH_USB for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext) { unsigned const cAsyncStart = Async.cAsync; for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun; pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown) if (!pdmR3PowerOffDrv(pDrvIns, &Async, pUsbIns->pReg->szName, pUsbIns->iInstance, pLun->iLun)) break; if (Async.cAsync == cAsyncStart) pdmR3PowerOffUsb(pUsbIns, &Async); } #endif if (!Async.cAsync) break; pdmR3NotifyAsyncLog(&Async); pdmR3NotifyAsyncWaitAndProcessRequests(&Async, pVM); } /* * Suspend all threads. */ pdmR3ThreadSuspendAll(pVM); cNsElapsed = RTTimeNanoTS() - cNsElapsed; LogRel(("PDMR3PowerOff: %'llu ns run time\n", cNsElapsed)); } /** * Queries the base interface of a device instance. * * The caller can use this to query other interfaces the device implements * and use them to talk to the device. * * @returns VBox status code. * @param pUVM The user mode VM handle. * @param pszDevice Device name. * @param iInstance Device instance. * @param ppBase Where to store the pointer to the base device interface on success. * @remark We're not doing any locking ATM, so don't try call this at times when the * device chain is known to be updated. */ VMMR3DECL(int) PDMR3QueryDevice(PUVM pUVM, const char *pszDevice, unsigned iInstance, PPDMIBASE *ppBase) { LogFlow(("PDMR3DeviceQuery: pszDevice=%p:{%s} iInstance=%u ppBase=%p\n", pszDevice, pszDevice, iInstance, ppBase)); UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE); VM_ASSERT_VALID_EXT_RETURN(pUVM->pVM, VERR_INVALID_VM_HANDLE); /* * Iterate registered devices looking for the device. */ size_t cchDevice = strlen(pszDevice); for (PPDMDEV pDev = pUVM->pVM->pdm.s.pDevs; pDev; pDev = pDev->pNext) { if ( pDev->cchName == cchDevice && !memcmp(pDev->pReg->szName, pszDevice, cchDevice)) { /* * Iterate device instances. */ for (PPDMDEVINS pDevIns = pDev->pInstances; pDevIns; pDevIns = pDevIns->Internal.s.pPerDeviceNextR3) { if (pDevIns->iInstance == iInstance) { if (pDevIns->IBase.pfnQueryInterface) { *ppBase = &pDevIns->IBase; LogFlow(("PDMR3DeviceQuery: return VINF_SUCCESS and *ppBase=%p\n", *ppBase)); return VINF_SUCCESS; } LogFlow(("PDMR3DeviceQuery: returns VERR_PDM_DEVICE_INSTANCE_NO_IBASE\n")); return VERR_PDM_DEVICE_INSTANCE_NO_IBASE; } } LogFlow(("PDMR3DeviceQuery: returns VERR_PDM_DEVICE_INSTANCE_NOT_FOUND\n")); return VERR_PDM_DEVICE_INSTANCE_NOT_FOUND; } } LogFlow(("PDMR3QueryDevice: returns VERR_PDM_DEVICE_NOT_FOUND\n")); return VERR_PDM_DEVICE_NOT_FOUND; } /** * Queries the base interface of a device LUN. * * This differs from PDMR3QueryLun by that it returns the interface on the * device and not the top level driver. * * @returns VBox status code. * @param pUVM The user mode VM handle. * @param pszDevice Device name. * @param iInstance Device instance. * @param iLun The Logical Unit to obtain the interface of. * @param ppBase Where to store the base interface pointer. * @remark We're not doing any locking ATM, so don't try call this at times when the * device chain is known to be updated. */ VMMR3DECL(int) PDMR3QueryDeviceLun(PUVM pUVM, const char *pszDevice, unsigned iInstance, unsigned iLun, PPDMIBASE *ppBase) { LogFlow(("PDMR3QueryDeviceLun: pszDevice=%p:{%s} iInstance=%u iLun=%u ppBase=%p\n", pszDevice, pszDevice, iInstance, iLun, ppBase)); UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE); VM_ASSERT_VALID_EXT_RETURN(pUVM->pVM, VERR_INVALID_VM_HANDLE); /* * Find the LUN. */ PPDMLUN pLun; int rc = pdmR3DevFindLun(pUVM->pVM, pszDevice, iInstance, iLun, &pLun); if (RT_SUCCESS(rc)) { *ppBase = pLun->pBase; LogFlow(("PDMR3QueryDeviceLun: return VINF_SUCCESS and *ppBase=%p\n", *ppBase)); return VINF_SUCCESS; } LogFlow(("PDMR3QueryDeviceLun: returns %Rrc\n", rc)); return rc; } /** * Query the interface of the top level driver on a LUN. * * @returns VBox status code. * @param pUVM The user mode VM handle. * @param pszDevice Device name. * @param iInstance Device instance. * @param iLun The Logical Unit to obtain the interface of. * @param ppBase Where to store the base interface pointer. * @remark We're not doing any locking ATM, so don't try call this at times when the * device chain is known to be updated. */ VMMR3DECL(int) PDMR3QueryLun(PUVM pUVM, const char *pszDevice, unsigned iInstance, unsigned iLun, PPDMIBASE *ppBase) { LogFlow(("PDMR3QueryLun: pszDevice=%p:{%s} iInstance=%u iLun=%u ppBase=%p\n", pszDevice, pszDevice, iInstance, iLun, ppBase)); UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE); PVM pVM = pUVM->pVM; VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE); /* * Find the LUN. */ PPDMLUN pLun; int rc = pdmR3DevFindLun(pVM, pszDevice, iInstance, iLun, &pLun); if (RT_SUCCESS(rc)) { if (pLun->pTop) { *ppBase = &pLun->pTop->IBase; LogFlow(("PDMR3QueryLun: return %Rrc and *ppBase=%p\n", VINF_SUCCESS, *ppBase)); return VINF_SUCCESS; } rc = VERR_PDM_NO_DRIVER_ATTACHED_TO_LUN; } LogFlow(("PDMR3QueryLun: returns %Rrc\n", rc)); return rc; } /** * Query the interface of a named driver on a LUN. * * If the driver appears more than once in the driver chain, the first instance * is returned. * * @returns VBox status code. * @param pUVM The user mode VM handle. * @param pszDevice Device name. * @param iInstance Device instance. * @param iLun The Logical Unit to obtain the interface of. * @param pszDriver The driver name. * @param ppBase Where to store the base interface pointer. * * @remark We're not doing any locking ATM, so don't try call this at times when the * device chain is known to be updated. */ VMMR3DECL(int) PDMR3QueryDriverOnLun(PUVM pUVM, const char *pszDevice, unsigned iInstance, unsigned iLun, const char *pszDriver, PPPDMIBASE ppBase) { LogFlow(("PDMR3QueryDriverOnLun: pszDevice=%p:{%s} iInstance=%u iLun=%u pszDriver=%p:{%s} ppBase=%p\n", pszDevice, pszDevice, iInstance, iLun, pszDriver, pszDriver, ppBase)); UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE); VM_ASSERT_VALID_EXT_RETURN(pUVM->pVM, VERR_INVALID_VM_HANDLE); /* * Find the LUN. */ PPDMLUN pLun; int rc = pdmR3DevFindLun(pUVM->pVM, pszDevice, iInstance, iLun, &pLun); if (RT_SUCCESS(rc)) { if (pLun->pTop) { for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown) if (!strcmp(pDrvIns->pReg->szName, pszDriver)) { *ppBase = &pDrvIns->IBase; LogFlow(("PDMR3QueryDriverOnLun: return %Rrc and *ppBase=%p\n", VINF_SUCCESS, *ppBase)); return VINF_SUCCESS; } rc = VERR_PDM_DRIVER_NOT_FOUND; } else rc = VERR_PDM_NO_DRIVER_ATTACHED_TO_LUN; } LogFlow(("PDMR3QueryDriverOnLun: returns %Rrc\n", rc)); return rc; } /** * Executes pending DMA transfers. * Forced Action handler. * * @param pVM The cross context VM structure. */ VMMR3DECL(void) PDMR3DmaRun(PVM pVM) { /* Note! Not really SMP safe; restrict it to VCPU 0. */ if (VMMGetCpuId(pVM) != 0) return; if (VM_FF_TEST_AND_CLEAR(pVM, VM_FF_PDM_DMA)) { if (pVM->pdm.s.pDmac) { bool fMore = pVM->pdm.s.pDmac->Reg.pfnRun(pVM->pdm.s.pDmac->pDevIns); if (fMore) VM_FF_SET(pVM, VM_FF_PDM_DMA); } } } /** * Service a VMMCALLRING3_PDM_LOCK call. * * @returns VBox status code. * @param pVM The cross context VM structure. */ VMMR3_INT_DECL(int) PDMR3LockCall(PVM pVM) { return PDMR3CritSectEnterEx(&pVM->pdm.s.CritSect, true /* fHostCall */); } /** * Allocates memory from the VMM device heap. * * @returns VBox status code. * @param pVM The cross context VM structure. * @param cbSize Allocation size. * @param pfnNotify Mapping/unmapping notification callback. * @param ppv Ring-3 pointer. (out) */ VMMR3_INT_DECL(int) PDMR3VmmDevHeapAlloc(PVM pVM, size_t cbSize, PFNPDMVMMDEVHEAPNOTIFY pfnNotify, RTR3PTR *ppv) { #ifdef DEBUG_bird if (!cbSize || cbSize > pVM->pdm.s.cbVMMDevHeapLeft) return VERR_NO_MEMORY; #else AssertReturn(cbSize && cbSize <= pVM->pdm.s.cbVMMDevHeapLeft, VERR_NO_MEMORY); #endif Log(("PDMR3VMMDevHeapAlloc: %#zx\n", cbSize)); /** @todo Not a real heap as there's currently only one user. */ *ppv = pVM->pdm.s.pvVMMDevHeap; pVM->pdm.s.cbVMMDevHeapLeft = 0; pVM->pdm.s.pfnVMMDevHeapNotify = pfnNotify; return VINF_SUCCESS; } /** * Frees memory from the VMM device heap * * @returns VBox status code. * @param pVM The cross context VM structure. * @param pv Ring-3 pointer. */ VMMR3_INT_DECL(int) PDMR3VmmDevHeapFree(PVM pVM, RTR3PTR pv) { Log(("PDMR3VmmDevHeapFree: %RHv\n", pv)); RT_NOREF_PV(pv); /** @todo not a real heap as there's currently only one user. */ pVM->pdm.s.cbVMMDevHeapLeft = pVM->pdm.s.cbVMMDevHeap; pVM->pdm.s.pfnVMMDevHeapNotify = NULL; return VINF_SUCCESS; } /** * Worker for DBGFR3TraceConfig that checks if the given tracing group name * matches a device or driver name and applies the tracing config change. * * @returns VINF_SUCCESS or VERR_NOT_FOUND. * @param pVM The cross context VM structure. * @param pszName The tracing config group name. This is NULL if * the operation applies to every device and * driver. * @param cchName The length to match. * @param fEnable Whether to enable or disable the corresponding * trace points. * @param fApply Whether to actually apply the changes or just do * existence checks. */ VMMR3_INT_DECL(int) PDMR3TracingConfig(PVM pVM, const char *pszName, size_t cchName, bool fEnable, bool fApply) { /** @todo This code is potentially racing driver attaching and detaching. */ /* * Applies to all. */ if (pszName == NULL) { AssertReturn(fApply, VINF_SUCCESS); for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) { pDevIns->fTracing = fEnable; for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown) pDrvIns->fTracing = fEnable; } #ifdef VBOX_WITH_USB for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext) { pUsbIns->fTracing = fEnable; for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun; pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown) pDrvIns->fTracing = fEnable; } #endif return VINF_SUCCESS; } /* * Specific devices, USB devices or drivers. * Decode prefix to figure which of these it applies to. */ if (cchName <= 3) return VERR_NOT_FOUND; uint32_t cMatches = 0; if (!strncmp("dev", pszName, 3)) { for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) { const char *pszDevName = pDevIns->Internal.s.pDevR3->pReg->szName; size_t cchDevName = strlen(pszDevName); if ( ( cchDevName == cchName && RTStrNICmp(pszName, pszDevName, cchDevName)) || ( cchDevName == cchName - 3 && RTStrNICmp(pszName + 3, pszDevName, cchDevName)) ) { cMatches++; if (fApply) pDevIns->fTracing = fEnable; } } } else if (!strncmp("usb", pszName, 3)) { for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext) { const char *pszUsbName = pUsbIns->Internal.s.pUsbDev->pReg->szName; size_t cchUsbName = strlen(pszUsbName); if ( ( cchUsbName == cchName && RTStrNICmp(pszName, pszUsbName, cchUsbName)) || ( cchUsbName == cchName - 3 && RTStrNICmp(pszName + 3, pszUsbName, cchUsbName)) ) { cMatches++; if (fApply) pUsbIns->fTracing = fEnable; } } } else if (!strncmp("drv", pszName, 3)) { AssertReturn(fApply, VINF_SUCCESS); for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown) { const char *pszDrvName = pDrvIns->Internal.s.pDrv->pReg->szName; size_t cchDrvName = strlen(pszDrvName); if ( ( cchDrvName == cchName && RTStrNICmp(pszName, pszDrvName, cchDrvName)) || ( cchDrvName == cchName - 3 && RTStrNICmp(pszName + 3, pszDrvName, cchDrvName)) ) { cMatches++; if (fApply) pDrvIns->fTracing = fEnable; } } #ifdef VBOX_WITH_USB for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext) for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun; pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown) { const char *pszDrvName = pDrvIns->Internal.s.pDrv->pReg->szName; size_t cchDrvName = strlen(pszDrvName); if ( ( cchDrvName == cchName && RTStrNICmp(pszName, pszDrvName, cchDrvName)) || ( cchDrvName == cchName - 3 && RTStrNICmp(pszName + 3, pszDrvName, cchDrvName)) ) { cMatches++; if (fApply) pDrvIns->fTracing = fEnable; } } #endif } else return VERR_NOT_FOUND; return cMatches > 0 ? VINF_SUCCESS : VERR_NOT_FOUND; } /** * Worker for DBGFR3TraceQueryConfig that checks whether all drivers, devices, * and USB device have the same tracing settings. * * @returns true / false. * @param pVM The cross context VM structure. * @param fEnabled The tracing setting to check for. */ VMMR3_INT_DECL(bool) PDMR3TracingAreAll(PVM pVM, bool fEnabled) { for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) { if (pDevIns->fTracing != (uint32_t)fEnabled) return false; for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown) if (pDrvIns->fTracing != (uint32_t)fEnabled) return false; } #ifdef VBOX_WITH_USB for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext) { if (pUsbIns->fTracing != (uint32_t)fEnabled) return false; for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun; pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown) if (pDrvIns->fTracing != (uint32_t)fEnabled) return false; } #endif return true; } /** * Worker for PDMR3TracingQueryConfig that adds a prefixed name to the output * string. * * @returns VINF_SUCCESS or VERR_BUFFER_OVERFLOW * @param ppszDst The pointer to the output buffer pointer. * @param pcbDst The pointer to the output buffer size. * @param fSpace Whether to add a space before the name. * @param pszPrefix The name prefix. * @param pszName The name. */ static int pdmR3TracingAdd(char **ppszDst, size_t *pcbDst, bool fSpace, const char *pszPrefix, const char *pszName) { size_t const cchPrefix = strlen(pszPrefix); if (!RTStrNICmp(pszPrefix, pszName, cchPrefix)) pszName += cchPrefix; size_t const cchName = strlen(pszName); size_t const cchThis = cchName + cchPrefix + fSpace; if (cchThis >= *pcbDst) return VERR_BUFFER_OVERFLOW; if (fSpace) { **ppszDst = ' '; memcpy(*ppszDst + 1, pszPrefix, cchPrefix); memcpy(*ppszDst + 1 + cchPrefix, pszName, cchName + 1); } else { memcpy(*ppszDst, pszPrefix, cchPrefix); memcpy(*ppszDst + cchPrefix, pszName, cchName + 1); } *ppszDst += cchThis; *pcbDst -= cchThis; return VINF_SUCCESS; } /** * Worker for DBGFR3TraceQueryConfig use when not everything is either enabled * or disabled. * * @returns VINF_SUCCESS or VERR_BUFFER_OVERFLOW * @param pVM The cross context VM structure. * @param pszConfig Where to store the config spec. * @param cbConfig The size of the output buffer. */ VMMR3_INT_DECL(int) PDMR3TracingQueryConfig(PVM pVM, char *pszConfig, size_t cbConfig) { int rc; char *pszDst = pszConfig; size_t cbDst = cbConfig; for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) { if (pDevIns->fTracing) { rc = pdmR3TracingAdd(&pszDst, &cbDst, pszDst != pszConfig, "dev", pDevIns->Internal.s.pDevR3->pReg->szName); if (RT_FAILURE(rc)) return rc; } for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown) if (pDrvIns->fTracing) { rc = pdmR3TracingAdd(&pszDst, &cbDst, pszDst != pszConfig, "drv", pDrvIns->Internal.s.pDrv->pReg->szName); if (RT_FAILURE(rc)) return rc; } } #ifdef VBOX_WITH_USB for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext) { if (pUsbIns->fTracing) { rc = pdmR3TracingAdd(&pszDst, &cbDst, pszDst != pszConfig, "usb", pUsbIns->Internal.s.pUsbDev->pReg->szName); if (RT_FAILURE(rc)) return rc; } for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun; pLun = pLun->pNext) for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown) if (pDrvIns->fTracing) { rc = pdmR3TracingAdd(&pszDst, &cbDst, pszDst != pszConfig, "drv", pDrvIns->Internal.s.pDrv->pReg->szName); if (RT_FAILURE(rc)) return rc; } } #endif return VINF_SUCCESS; } /** * Checks that a PDMDRVREG::szName, PDMDEVREG::szName or PDMUSBREG::szName * field contains only a limited set of ASCII characters. * * @returns true / false. * @param pszName The name to validate. */ bool pdmR3IsValidName(const char *pszName) { char ch; while ( (ch = *pszName) != '\0' && ( RT_C_IS_ALNUM(ch) || ch == '-' || ch == ' ' /** @todo disallow this! */ || ch == '_') ) pszName++; return ch == '\0'; } /** * Info handler for 'pdmtracingids'. * * @param pVM The cross context VM structure. * @param pHlp The output helpers. * @param pszArgs The optional user arguments. * * @remarks Can be called on most threads. */ static DECLCALLBACK(void) pdmR3InfoTracingIds(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs) { /* * Parse the argument (optional). */ if ( pszArgs && *pszArgs && strcmp(pszArgs, "all") && strcmp(pszArgs, "devices") && strcmp(pszArgs, "drivers") && strcmp(pszArgs, "usb")) { pHlp->pfnPrintf(pHlp, "Unable to grok '%s'\n", pszArgs); return; } bool fAll = !pszArgs || !*pszArgs || !strcmp(pszArgs, "all"); bool fDevices = fAll || !strcmp(pszArgs, "devices"); bool fUsbDevs = fAll || !strcmp(pszArgs, "usb"); bool fDrivers = fAll || !strcmp(pszArgs, "drivers"); /* * Produce the requested output. */ /** @todo lock PDM lists! */ /* devices */ if (fDevices) { pHlp->pfnPrintf(pHlp, "Device tracing IDs:\n"); for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) pHlp->pfnPrintf(pHlp, "%05u %s\n", pDevIns->idTracing, pDevIns->Internal.s.pDevR3->pReg->szName); } /* USB devices */ if (fUsbDevs) { pHlp->pfnPrintf(pHlp, "USB device tracing IDs:\n"); for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext) pHlp->pfnPrintf(pHlp, "%05u %s\n", pUsbIns->idTracing, pUsbIns->Internal.s.pUsbDev->pReg->szName); } /* Drivers */ if (fDrivers) { pHlp->pfnPrintf(pHlp, "Driver tracing IDs:\n"); for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) { for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext) { uint32_t iLevel = 0; for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown, iLevel++) pHlp->pfnPrintf(pHlp, "%05u %s (level %u, lun %u, dev %s)\n", pDrvIns->idTracing, pDrvIns->Internal.s.pDrv->pReg->szName, iLevel, pLun->iLun, pDevIns->Internal.s.pDevR3->pReg->szName); } } for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext) { for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun; pLun = pLun->pNext) { uint32_t iLevel = 0; for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown, iLevel++) pHlp->pfnPrintf(pHlp, "%05u %s (level %u, lun %u, dev %s)\n", pDrvIns->idTracing, pDrvIns->Internal.s.pDrv->pReg->szName, iLevel, pLun->iLun, pUsbIns->Internal.s.pUsbDev->pReg->szName); } } } }