/* $Id: PDM.cpp 24748 2009-11-17 23:52:24Z vboxsync $ */ /** @file * PDM - Pluggable Device Manager. */ /* * Copyright (C) 2006-2007 Sun Microsystems, Inc. * * 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. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa * Clara, CA 95054 USA or visit http://www.sun.com if you need * additional information or have any questions. */ /** @page pg_pdm PDM - The Pluggable Device & Driver Manager * * 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. * * @see grp_pdm * * * @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 have an unique (for the * configured VM) name. 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, see network adaptors for instance. 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 from their device * instance handles, 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 accross 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 can * needs 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. * * * @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 repeates 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 handles 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 case, you might wanna 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 the 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 exposes 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 hotplug. 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 method 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 constrcts 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 complexcity 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 posibility 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 optinally 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 #include "PDMInternal.h" #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 4 #define PDM_SAVED_STATE_VERSION_PRE_NMI_FF 3 /******************************************************************************* * 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); /** * 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. */ VMMR3DECL(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; return VINF_SUCCESS; } /** * Initializes the PDM. * * @returns VBox status code. * @param pVM The VM to operate on. */ VMMR3DECL(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.offVM = RT_OFFSETOF(VM, pdm.s); pVM->pdm.s.GCPhysVMMDevHeap = NIL_RTGCPHYS; /* * Initialize sub compontents. */ int rc = RTCritSectInit(&pVM->pdm.s.MiscCritSect); if (RT_SUCCESS(rc)) rc = pdmR3CritSectInit(pVM); if (RT_SUCCESS(rc)) rc = PDMR3CritSectInit(pVM, &pVM->pdm.s.CritSect, "PDM"); if (RT_SUCCESS(rc)) rc = pdmR3LdrInitU(pVM->pUVM); #ifdef VBOX_WITH_PDM_ASYNC_COMPLETION if (RT_SUCCESS(rc)) rc = pdmR3AsyncCompletionInit(pVM); #endif 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)) { LogFlow(("PDM: Successfully initialized\n")); return rc; } } /* * Cleanup and return failure. */ PDMR3Term(pVM); LogFlow(("PDMR3Init: returns %Rrc\n", rc)); return rc; } /** * 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 VM handle. * @param offDelta Relocation delta relative to old location. * @remark The loader subcomponent is relocated by PDMR3LdrRelocate() very * early in the relocation phase. */ VMMR3DECL(void) PDMR3Relocate(PVM pVM, RTGCINTPTR offDelta) { LogFlow(("PDMR3Relocate\n")); /* * Queues. */ pdmR3QueueRelocate(pVM, offDelta); pVM->pdm.s.pDevHlpQueueRC = PDMQueueRCPtr(pVM->pdm.s.pDevHlpQueueR3); /* * Critical sections. */ pdmR3CritSectRelocate(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.pfnSetBaseRC += offDelta; pVM->pdm.s.Apic.pfnGetBaseRC += offDelta; pVM->pdm.s.Apic.pfnSetTPRRC += offDelta; pVM->pdm.s.Apic.pfnGetTPRRC += offDelta; pVM->pdm.s.Apic.pfnBusDeliverRC += offDelta; if (pVM->pdm.s.Apic.pfnLocalInterruptRC) pVM->pdm.s.Apic.pfnLocalInterruptRC += offDelta; pVM->pdm.s.Apic.pfnWriteMSRRC += offDelta; pVM->pdm.s.Apic.pfnReadMSRRC += offDelta; } /* * The registered I/O APIC. */ if (pVM->pdm.s.IoApic.pDevInsRC) { pVM->pdm.s.IoApic.pDevInsRC += offDelta; pVM->pdm.s.IoApic.pfnSetIrqRC += 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. */ PCPDMDEVHLPRC pDevHlpRC; int rc = PDMR3LdrGetSymbolRC(pVM, NULL, "g_pdmRCDevHlp", &pDevHlpRC); 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->pDevReg->fFlags & PDM_DEVREG_FLAGS_RC) { pDevIns->pDevHlpRC = pDevHlpRC; pDevIns->pvInstanceDataRC = MMHyperR3ToRC(pVM, pDevIns->pvInstanceDataR3); pDevIns->Internal.s.pVMRC = pVM->pVMRC; if (pDevIns->Internal.s.pPciBusR3) pDevIns->Internal.s.pPciBusRC = MMHyperR3ToRC(pVM, pDevIns->Internal.s.pPciBusR3); if (pDevIns->Internal.s.pPciDeviceR3) pDevIns->Internal.s.pPciDeviceRC = MMHyperR3ToRC(pVM, pDevIns->Internal.s.pPciDeviceR3); if (pDevIns->pDevReg->pfnRelocate) { LogFlow(("PDMR3Relocate: Relocating device '%s'/%d\n", pDevIns->pDevReg->szDeviceName, pDevIns->iInstance)); pDevIns->pDevReg->pfnRelocate(pDevIns, offDelta); } } } } /** * Worker for pdmR3Term that terminates a LUN chain. * * @param pVM Pointer to the shared 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) { 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->pDrvReg->pfnDestruct) { LogFlow(("pdmR3DevTerm: Destroying - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, pLun->iLun, pszDevice, iInstance)); pDrvIns->pDrvReg->pfnDestruct(pDrvIns); } TMR3TimerDestroyDriver(pVM, pDrvIns); //PDMR3QueueDestroyDriver(pVM, pDrvIns); //pdmR3ThreadDestroyDriver(pVM, pDrvIns); SSMR3DeregisterDriver(pVM, pDrvIns, NULL, 0); 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 VM to operate on. */ VMMR3DECL(int) PDMR3Term(PVM pVM) { LogFlow(("PDMR3Term:\n")); AssertMsg(pVM->pdm.s.offVM, ("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->pUsbReg->szDeviceName, pUsbIns->iInstance); if (pUsbIns->pUsbReg->pfnDestruct) { LogFlow(("pdmR3DevTerm: Destroying - device '%s'/%d\n", pUsbIns->pUsbReg->szDeviceName, pUsbIns->iInstance)); pUsbIns->pUsbReg->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->pDevReg->szDeviceName, pDevIns->iInstance); if (pDevIns->pDevReg->pfnDestruct) { LogFlow(("pdmR3DevTerm: Destroying - device '%s'/%d\n", pDevIns->pDevReg->szDeviceName, pDevIns->iInstance)); pDevIns->pDevReg->pfnDestruct(pDevIns); } TMR3TimerDestroyDevice(pVM, pDevIns); //SSMR3DeregisterDriver(pVM, pDevIns, NULL, 0); pdmR3CritSectDeleteDevice(pVM, pDevIns); //pdmR3ThreadDestroyDevice(pVM, pDevIns); //PDMR3QueueDestroyDevice(pVM, pDevIns); PGMR3PhysMMIO2Deregister(pVM, pDevIns, UINT32_MAX); } /* * Destroy all threads. */ pdmR3ThreadDestroyAll(pVM); #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 PDMR3CritSectTerm. */ 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. */ VMMR3DECL(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); } /** * Bits that are saved in pass 0 and in the final pass. * * @param pVM The VM handle. * @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->pDevReg->szDeviceName); SSMR3PutU32(pSSM, pDevIns->iInstance); } SSMR3PutU32(pSSM, UINT32_MAX); /* terminator */ } /** * Live save. * * @returns VBox status code. * @param pVM The VM handle. * @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_INTERNAL_ERROR_4); pdmR3SaveBoth(pVM, pSSM); return VINF_SSM_DONT_CALL_AGAIN; } /** * Execute state save operation. * * @returns VBox status code. * @param pVM The VM handle. * @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]; SSMR3PutUInt(pSSM, VMCPU_FF_ISSET(pVCpu, VMCPU_FF_INTERRUPT_APIC)); SSMR3PutUInt(pSSM, VMCPU_FF_ISSET(pVCpu, VMCPU_FF_INTERRUPT_PIC)); SSMR3PutUInt(pSSM, VMCPU_FF_ISSET(pVCpu, VMCPU_FF_INTERRUPT_NMI)); SSMR3PutUInt(pSSM, VMCPU_FF_ISSET(pVCpu, VMCPU_FF_INTERRUPT_SMI)); } SSMR3PutUInt(pSSM, VM_FF_ISSET(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 VM handle. * @param pSSM The SSM handle. */ static DECLCALLBACK(int) pdmR3LoadPrep(PVM pVM, PSSMHANDLE pSSM) { LogFlow(("pdmR3LoadPrep: %s%s\n", VM_FF_ISSET(pVM, VM_FF_PDM_QUEUES) ? " VM_FF_PDM_QUEUES" : "", VM_FF_ISSET(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_ISSET(pVCpu, VMCPU_FF_INTERRUPT_APIC) ? " VMCPU_FF_INTERRUPT_APIC" : "", VMCPU_FF_ISSET(pVCpu, VMCPU_FF_INTERRUPT_PIC) ? " VMCPU_FF_INTERRUPT_PIC" : "")); } #endif /* * In case there is work pending that will raise an interrupt, * start a DMA transfer, or release a lock. (unlikely) */ if (VM_FF_ISSET(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 VM Handle. * @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) { 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 */ RTUINT fInterruptPending = 0; rc = SSMR3GetUInt(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_ISSET(pVCpu, VMCPU_FF_INTERRUPT_APIC)); if (fInterruptPending) VMCPU_FF_SET(pVCpu, VMCPU_FF_INTERRUPT_APIC); /* PIC interrupt */ fInterruptPending = 0; rc = SSMR3GetUInt(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_ISSET(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 */ RTUINT fInterruptPending = 0; rc = SSMR3GetUInt(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_ISSET(pVCpu, VMCPU_FF_INTERRUPT_NMI)); if (fInterruptPending) VMCPU_FF_SET(pVCpu, VMCPU_FF_INTERRUPT_NMI); /* SMI interrupt */ fInterruptPending = 0; rc = SSMR3GetUInt(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_ISSET(pVCpu, VMCPU_FF_INTERRUPT_SMI)); if (fInterruptPending) VMCPU_FF_SET(pVCpu, VMCPU_FF_INTERRUPT_SMI); } } /* DMA pending */ RTUINT fDMAPending = 0; rc = SSMR3GetUInt(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_ISSET(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; int rc = SSMR3GetU32(pSSM, &u32Sep); if (RT_FAILURE(rc)) return rc; if (u32Sep == UINT32_MAX) break; if (u32Sep != i) AssertMsgFailedReturn(("Out of seqence. u32Sep=%#x i=%#x\n", u32Sep, i), VERR_SSM_DATA_UNIT_FORMAT_CHANGED); /* Get the name and instance number. */ char szDeviceName[RT_SIZEOFMEMB(PDMDEVREG, szDeviceName)]; rc = SSMR3GetStrZ(pSSM, szDeviceName, sizeof(szDeviceName)); if (RT_FAILURE(rc)) return rc; RTUINT iInstance; rc = SSMR3GetUInt(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 ( !strcmp(szDeviceName, pDevIns->pDevReg->szDeviceName) && pDevIns->iInstance == iInstance) { AssertLogRelMsgReturn(!(pDevIns->Internal.s.fIntFlags & PDMDEVINSINT_FLAGS_FOUND), ("%s/#%u\n", pDevIns->pDevReg->szDeviceName, pDevIns->iInstance), VERR_SSM_DATA_UNIT_FORMAT_CHANGED); pDevIns->Internal.s.fIntFlags |= PDMDEVINSINT_FLAGS_FOUND; break; } if (!pDevIns) { LogRel(("Device '%s'/%d not found in current config\n", szDeviceName, iInstance)); if (SSMR3HandleGetAfter(pSSM) != SSMAFTER_DEBUG_IT) return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Device '%s'/%d not found in current config"), szDeviceName, 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->pDevReg->szDeviceName, 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->pDevReg->szDeviceName, pDevIns->iInstance); } return VINF_SUCCESS; } /** * Worker for PDMR3PowerOn that deals with one driver. * * @param pDrvIns The driver instance. * @param pszDeviceName The parent device name. * @param iDevInstance The parent device instance number. * @param iLun The parent LUN number. */ DECLINLINE(bool) pdmR3PowerOnDrv(PPDMDRVINS pDrvIns, const char *pszDeviceName, uint32_t iDevInstance, uint32_t iLun) { Assert(pDrvIns->Internal.s.fVMSuspended); if (pDrvIns->pDrvReg->pfnPowerOn) { LogFlow(("PDMR3PowerOn: Notifying - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, iLun, pszDeviceName, iDevInstance)); int rc = VINF_SUCCESS; pDrvIns->pDrvReg->pfnPowerOn(pDrvIns); if (RT_FAILURE(rc)) { LogRel(("PDMR3PowerOn: driver '%s'/%d on LUN#%d of device '%s'/%d -> %Rrc\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, iLun, pszDeviceName, 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->pUsbReg->pfnVMPowerOn) { LogFlow(("PDMR3PowerOn: Notifying - device '%s'/%d\n", pUsbIns->pUsbReg->szDeviceName, pUsbIns->iInstance)); int rc = VINF_SUCCESS; pUsbIns->pUsbReg->pfnVMPowerOn(pUsbIns); if (RT_FAILURE(rc)) { LogRel(("PDMR3PowerOn: device '%s'/%d -> %Rrc\n", pUsbIns->pUsbReg->szDeviceName, 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->pDevReg->pfnPowerOn) { LogFlow(("PDMR3PowerOn: Notifying - device '%s'/%d\n", pDevIns->pDevReg->szDeviceName, pDevIns->iInstance)); int rc = VINF_SUCCESS; pDevIns->pDevReg->pfnPowerOn(pDevIns); if (RT_FAILURE(rc)) { LogRel(("PDMR3PowerOn: device '%s'/%d -> %Rrc\n", pDevIns->pDevReg->szDeviceName, 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 VM Handle. */ 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->pDevReg->szDeviceName, 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->pUsbReg->szDeviceName, pUsbIns->iInstance, pLun->iLun); if (RT_SUCCESS(rc)) rc = pdmR3PowerOnUsb(pUsbIns); } #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*/; } /** * Worker for PDMR3Reset that deals with one driver. * * @param pDrvIns The driver instance. * @param pcAsync The asynchronous reset notification counter. * @param pszDeviceName The parent device name. * @param iDevInstance The parent device instance number. * @param iLun The parent LUN number. */ DECLINLINE(bool) pdmR3ResetDrv(PPDMDRVINS pDrvIns, unsigned *pcAsync, const char *pszDeviceName, uint32_t iDevInstance, uint32_t iLun) { if (!pDrvIns->Internal.s.fVMReset) { pDrvIns->Internal.s.fVMReset = true; if (pDrvIns->pDrvReg->pfnReset) { if (!pDrvIns->Internal.s.pfnAsyncNotify) { LogFlow(("PDMR3Reset: Notifying - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, iLun, pszDeviceName, iDevInstance)); pDrvIns->pDrvReg->pfnReset(pDrvIns); if (pDrvIns->Internal.s.pfnAsyncNotify) LogFlow(("PDMR3Reset: Async notification started - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, iLun, pszDeviceName, iDevInstance)); } else if (pDrvIns->Internal.s.pfnAsyncNotify(pDrvIns)) { pDrvIns->Internal.s.pfnAsyncNotify = false; LogFlow(("PDMR3Reset: Async notification completed - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, iLun, pszDeviceName, iDevInstance)); } if (pDrvIns->Internal.s.pfnAsyncNotify) { pDrvIns->Internal.s.fVMReset = false; (*pcAsync)++; return false; } } } return true; } /** * Worker for PDMR3Reset that deals with one USB device instance. * * @param pUsbIns The USB device instance. * @param pcAsync The asynchronous reset notification counter. */ DECLINLINE(void) pdmR3ResetUsb(PPDMUSBINS pUsbIns, unsigned *pcAsync) { if (!pUsbIns->Internal.s.fVMReset) { pUsbIns->Internal.s.fVMReset = true; if (pUsbIns->pUsbReg->pfnVMReset) { if (!pUsbIns->Internal.s.pfnAsyncNotify) { LogFlow(("PDMR3Reset: Notifying - device '%s'/%d\n", pUsbIns->pUsbReg->szDeviceName, pUsbIns->iInstance)); pUsbIns->pUsbReg->pfnVMReset(pUsbIns); if (pUsbIns->Internal.s.pfnAsyncNotify) LogFlow(("PDMR3Reset: Async notification started - device '%s'/%d\n", pUsbIns->pUsbReg->szDeviceName, pUsbIns->iInstance)); } else if (pUsbIns->Internal.s.pfnAsyncNotify(pUsbIns)) { LogFlow(("PDMR3Reset: Async notification completed - device '%s'/%d\n", pUsbIns->pUsbReg->szDeviceName, pUsbIns->iInstance)); pUsbIns->Internal.s.pfnAsyncNotify = NULL; } if (pUsbIns->Internal.s.pfnAsyncNotify) { pUsbIns->Internal.s.fVMReset = false; (*pcAsync)++; } } } } /** * Worker for PDMR3Reset that deals with one device instance. * * @param pDevIns The device instance. * @param pcAsync The asynchronous reset notification counter. */ DECLINLINE(void) pdmR3ResetDev(PPDMDEVINS pDevIns, unsigned *pcAsync) { if (!(pDevIns->Internal.s.fIntFlags & PDMDEVINSINT_FLAGS_RESET)) { pDevIns->Internal.s.fIntFlags |= PDMDEVINSINT_FLAGS_RESET; if (pDevIns->pDevReg->pfnReset) { if (!pDevIns->Internal.s.pfnAsyncNotify) { LogFlow(("PDMR3Reset: Notifying - device '%s'/%d\n", pDevIns->pDevReg->szDeviceName, pDevIns->iInstance)); pDevIns->pDevReg->pfnReset(pDevIns); if (pDevIns->Internal.s.pfnAsyncNotify) LogFlow(("PDMR3Reset: Async notification started - device '%s'/%d\n", pDevIns->pDevReg->szDeviceName, pDevIns->iInstance)); } else if (pDevIns->Internal.s.pfnAsyncNotify(pDevIns)) { LogFlow(("PDMR3Reset: Async notification completed - device '%s'/%d\n", pDevIns->pDevReg->szDeviceName, pDevIns->iInstance)); pDevIns->Internal.s.pfnAsyncNotify = NULL; } if (pDevIns->Internal.s.pfnAsyncNotify) { pDevIns->Internal.s.fIntFlags &= ~PDMDEVINSINT_FLAGS_RESET; (*pcAsync)++; } } } } /** * This function will notify all the devices and their attached drivers about * the VM now being reset. * * @param pVM VM Handle. */ VMMR3DECL(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. */ unsigned cAsync; for (unsigned iLoop = 0; ; iLoop++) { /* * Iterate thru the device instances and USB device instances, * processing the drivers associated with those. */ cAsync = 0; for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) { unsigned const cAsyncStart = cAsync; if (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, &cAsync, pDevIns->pDevReg->szDeviceName, pDevIns->iInstance, pLun->iLun)) break; if (cAsync == cAsyncStart) pdmR3ResetDev(pDevIns, &cAsync); } #ifdef VBOX_WITH_USB for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext) { unsigned const cAsyncStart = 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, &cAsync, pUsbIns->pUsbReg->szDeviceName, pUsbIns->iInstance, pLun->iLun)) break; if (cAsync == cAsyncStart) pdmR3ResetUsb(pUsbIns, &cAsync); } #endif if (!cAsync) break; /* * Process requests. */ /** @todo This is utterly nuts and completely unsafe... will get back to it in a * bit I hope... */ int rc = VMR3AsyncPdmNotificationWaitU(&pVM->pUVM->aCpus[0]); AssertReleaseMsg(rc == VINF_SUCCESS, ("%Rrc\n", rc)); rc = VMR3ReqProcessU(pVM->pUVM, VMCPUID_ANY); AssertReleaseMsg(rc == VINF_SUCCESS, ("%Rrc\n", rc)); rc = VMR3ReqProcessU(pVM->pUVM, 0/*idDstCpu*/); AssertReleaseMsg(rc == VINF_SUCCESS, ("%Rrc\n", rc)); } /* * Clear all pending interrupts and DMA operations. */ 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); LogFlow(("PDMR3Reset: returns void\n")); } /** * Worker for PDMR3Suspend that deals with one driver. * * @param pDrvIns The driver instance. * @param pcAsync The asynchronous suspend notification counter. * @param pszDeviceName The parent device name. * @param iDevInstance The parent device instance number. * @param iLun The parent LUN number. */ DECLINLINE(bool) pdmR3SuspendDrv(PPDMDRVINS pDrvIns, unsigned *pcAsync, const char *pszDeviceName, uint32_t iDevInstance, uint32_t iLun) { if (!pDrvIns->Internal.s.fVMSuspended) { pDrvIns->Internal.s.fVMSuspended = true; if (pDrvIns->pDrvReg->pfnSuspend) { if (!pDrvIns->Internal.s.pfnAsyncNotify) { LogFlow(("PDMR3Suspend: Notifying - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, iLun, pszDeviceName, iDevInstance)); pDrvIns->pDrvReg->pfnSuspend(pDrvIns); if (pDrvIns->Internal.s.pfnAsyncNotify) LogFlow(("PDMR3Suspend: Async notification started - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, iLun, pszDeviceName, iDevInstance)); } else if (pDrvIns->Internal.s.pfnAsyncNotify(pDrvIns)) { pDrvIns->Internal.s.pfnAsyncNotify = false; LogFlow(("PDMR3Suspend: Async notification completed - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, iLun, pszDeviceName, iDevInstance)); } if (pDrvIns->Internal.s.pfnAsyncNotify) { pDrvIns->Internal.s.fVMSuspended = false; (*pcAsync)++; return false; } } } return true; } /** * Worker for PDMR3Suspend that deals with one USB device instance. * * @param pUsbIns The USB device instance. * @param pcAsync The asynchronous suspend notification counter. */ DECLINLINE(void) pdmR3SuspendUsb(PPDMUSBINS pUsbIns, unsigned *pcAsync) { if (!pUsbIns->Internal.s.fVMSuspended) { pUsbIns->Internal.s.fVMSuspended = true; if (pUsbIns->pUsbReg->pfnVMSuspend) { if (!pUsbIns->Internal.s.pfnAsyncNotify) { LogFlow(("PDMR3Suspend: Notifying - device '%s'/%d\n", pUsbIns->pUsbReg->szDeviceName, pUsbIns->iInstance)); pUsbIns->pUsbReg->pfnVMSuspend(pUsbIns); if (pUsbIns->Internal.s.pfnAsyncNotify) LogFlow(("PDMR3Suspend: Async notification started - device '%s'/%d\n", pUsbIns->pUsbReg->szDeviceName, pUsbIns->iInstance)); } else if (pUsbIns->Internal.s.pfnAsyncNotify(pUsbIns)) { LogFlow(("PDMR3Suspend: Async notification completed - device '%s'/%d\n", pUsbIns->pUsbReg->szDeviceName, pUsbIns->iInstance)); pUsbIns->Internal.s.pfnAsyncNotify = NULL; } if (pUsbIns->Internal.s.pfnAsyncNotify) { pUsbIns->Internal.s.fVMSuspended = false; (*pcAsync)++; } } } } /** * Worker for PDMR3Suspend that deals with one device instance. * * @param pDevIns The device instance. * @param pcAsync The asynchronous suspend notification counter. */ DECLINLINE(void) pdmR3SuspendDev(PPDMDEVINS pDevIns, unsigned *pcAsync) { if (!(pDevIns->Internal.s.fIntFlags & PDMDEVINSINT_FLAGS_SUSPENDED)) { pDevIns->Internal.s.fIntFlags |= PDMDEVINSINT_FLAGS_SUSPENDED; if (pDevIns->pDevReg->pfnSuspend) { if (!pDevIns->Internal.s.pfnAsyncNotify) { LogFlow(("PDMR3Suspend: Notifying - device '%s'/%d\n", pDevIns->pDevReg->szDeviceName, pDevIns->iInstance)); pDevIns->pDevReg->pfnSuspend(pDevIns); if (pDevIns->Internal.s.pfnAsyncNotify) LogFlow(("PDMR3Suspend: Async notification started - device '%s'/%d\n", pDevIns->pDevReg->szDeviceName, pDevIns->iInstance)); } else if (pDevIns->Internal.s.pfnAsyncNotify(pDevIns)) { LogFlow(("PDMR3Suspend: Async notification completed - device '%s'/%d\n", pDevIns->pDevReg->szDeviceName, pDevIns->iInstance)); pDevIns->Internal.s.pfnAsyncNotify = NULL; } if (pDevIns->Internal.s.pfnAsyncNotify) { pDevIns->Internal.s.fIntFlags &= ~PDMDEVINSINT_FLAGS_SUSPENDED; (*pcAsync)++; } } } } /** * This function will notify all the devices and their attached drivers about * the VM now being suspended. * * @param pVM The VM Handle. * @thread EMT(0) */ VMMR3DECL(void) PDMR3Suspend(PVM pVM) { LogFlow(("PDMR3Suspend:\n")); VM_ASSERT_EMT0(pVM); /* * 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. */ unsigned cAsync; for (unsigned iLoop = 0; ; iLoop++) { /* * 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.) */ cAsync = 0; for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) { unsigned const cAsyncStart = cAsync; if (pDevIns->pDevReg->fFlags & PDM_DEVREG_FLAGS_FIRST_SUSPEND_NOTIFICATION) pdmR3SuspendDev(pDevIns, &cAsync); if (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, &cAsync, pDevIns->pDevReg->szDeviceName, pDevIns->iInstance, pLun->iLun)) break; if ( cAsync == cAsyncStart && !(pDevIns->pDevReg->fFlags & PDM_DEVREG_FLAGS_FIRST_SUSPEND_NOTIFICATION)) pdmR3SuspendDev(pDevIns, &cAsync); } #ifdef VBOX_WITH_USB for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext) { unsigned const cAsyncStart = 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, &cAsync, pUsbIns->pUsbReg->szDeviceName, pUsbIns->iInstance, pLun->iLun)) break; if (cAsync == cAsyncStart) pdmR3SuspendUsb(pUsbIns, &cAsync); } #endif if (!cAsync) break; /* * Process requests. */ /** @todo This is utterly nuts and completely unsafe... will get back to it in a * bit I hope... */ int rc = VMR3AsyncPdmNotificationWaitU(&pVM->pUVM->aCpus[0]); AssertReleaseMsg(rc == VINF_SUCCESS, ("%Rrc\n", rc)); rc = VMR3ReqProcessU(pVM->pUVM, VMCPUID_ANY); AssertReleaseMsg(rc == VINF_SUCCESS, ("%Rrc\n", rc)); rc = VMR3ReqProcessU(pVM->pUVM, 0/*idDstCpu*/); AssertReleaseMsg(rc == VINF_SUCCESS, ("%Rrc\n", rc)); } /* * Suspend all threads. */ pdmR3ThreadSuspendAll(pVM); LogFlow(("PDMR3Suspend: returns void\n")); } /** * Worker for PDMR3Resume that deals with one driver. * * @param pDrvIns The driver instance. * @param pszDeviceName The parent device name. * @param iDevInstance The parent device instance number. * @param iLun The parent LUN number. */ DECLINLINE(bool) pdmR3ResumeDrv(PPDMDRVINS pDrvIns, const char *pszDeviceName, uint32_t iDevInstance, uint32_t iLun) { Assert(pDrvIns->Internal.s.fVMSuspended); if (pDrvIns->pDrvReg->pfnResume) { LogFlow(("PDMR3Resume: Notifying - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, iLun, pszDeviceName, iDevInstance)); int rc = VINF_SUCCESS; pDrvIns->pDrvReg->pfnResume(pDrvIns); if (RT_FAILURE(rc)) { LogRel(("PDMR3Resume: driver '%s'/%d on LUN#%d of device '%s'/%d -> %Rrc\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, iLun, pszDeviceName, 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->pUsbReg->pfnVMResume) { LogFlow(("PDMR3Resume: Notifying - device '%s'/%d\n", pUsbIns->pUsbReg->szDeviceName, pUsbIns->iInstance)); int rc = VINF_SUCCESS; pUsbIns->pUsbReg->pfnVMResume(pUsbIns); if (RT_FAILURE(rc)) { LogRel(("PDMR3Resume: device '%s'/%d -> %Rrc\n", pUsbIns->pUsbReg->szDeviceName, 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->pDevReg->pfnResume) { LogFlow(("PDMR3Resume: Notifying - device '%s'/%d\n", pDevIns->pDevReg->szDeviceName, pDevIns->iInstance)); int rc = VINF_SUCCESS; pDevIns->pDevReg->pfnResume(pDevIns); if (RT_FAILURE(rc)) { LogRel(("PDMR3Resume: device '%s'/%d -> %Rrc\n", pDevIns->pDevReg->szDeviceName, 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 VM Handle. */ VMMR3DECL(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->pDevReg->szDeviceName, 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->pUsbReg->szDeviceName, pUsbIns->iInstance, pLun->iLun); if (RT_SUCCESS(rc)) rc = pdmR3ResumeUsb(pUsbIns); } #endif /* * Resume all threads. */ if (RT_SUCCESS(rc)) pdmR3ThreadResumeAll(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 pcAsync The asynchronous power off notification counter. * @param pszDeviceName The parent device name. * @param iDevInstance The parent device instance number. * @param iLun The parent LUN number. */ DECLINLINE(bool) pdmR3PowerOffDrv(PPDMDRVINS pDrvIns, unsigned *pcAsync, const char *pszDeviceName, uint32_t iDevInstance, uint32_t iLun) { if (!pDrvIns->Internal.s.fVMSuspended) { pDrvIns->Internal.s.fVMSuspended = true; if (pDrvIns->pDrvReg->pfnSuspend) { if (!pDrvIns->Internal.s.pfnAsyncNotify) { LogFlow(("PDMR3PowerOff: Notifying - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, iLun, pszDeviceName, iDevInstance)); pDrvIns->pDrvReg->pfnPowerOff(pDrvIns); if (pDrvIns->Internal.s.pfnAsyncNotify) LogFlow(("PDMR3PowerOff: Async notification started - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, iLun, pszDeviceName, iDevInstance)); } else if (pDrvIns->Internal.s.pfnAsyncNotify(pDrvIns)) { pDrvIns->Internal.s.pfnAsyncNotify = false; LogFlow(("PDMR3PowerOff: Async notification completed - driver '%s'/%d on LUN#%d of device '%s'/%d\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, iLun, pszDeviceName, iDevInstance)); } if (pDrvIns->Internal.s.pfnAsyncNotify) { pDrvIns->Internal.s.fVMSuspended = false; (*pcAsync)++; return false; } } } return true; } /** * Worker for PDMR3PowerOff that deals with one USB device instance. * * @param pUsbIns The USB device instance. * @param pcAsync The asynchronous power off notification counter. */ DECLINLINE(void) pdmR3PowerOffUsb(PPDMUSBINS pUsbIns, unsigned *pcAsync) { if (!pUsbIns->Internal.s.fVMSuspended) { pUsbIns->Internal.s.fVMSuspended = true; if (pUsbIns->pUsbReg->pfnVMPowerOff) { if (!pUsbIns->Internal.s.pfnAsyncNotify) { LogFlow(("PDMR3PowerOff: Notifying - device '%s'/%d\n", pUsbIns->pUsbReg->szDeviceName, pUsbIns->iInstance)); pUsbIns->pUsbReg->pfnVMPowerOff(pUsbIns); if (pUsbIns->Internal.s.pfnAsyncNotify) LogFlow(("PDMR3PowerOff: Async notification started - device '%s'/%d\n", pUsbIns->pUsbReg->szDeviceName, pUsbIns->iInstance)); } else if (pUsbIns->Internal.s.pfnAsyncNotify(pUsbIns)) { LogFlow(("PDMR3PowerOff: Async notification completed - device '%s'/%d\n", pUsbIns->pUsbReg->szDeviceName, pUsbIns->iInstance)); pUsbIns->Internal.s.pfnAsyncNotify = NULL; } if (pUsbIns->Internal.s.pfnAsyncNotify) { pUsbIns->Internal.s.fVMSuspended = false; (*pcAsync)++; } } } } /** * Worker for PDMR3PowerOff that deals with one device instance. * * @param pDevIns The device instance. * @param pcAsync The asynchronous power off notification counter. */ DECLINLINE(void) pdmR3PowerOffDev(PPDMDEVINS pDevIns, unsigned *pcAsync) { if (!(pDevIns->Internal.s.fIntFlags & PDMDEVINSINT_FLAGS_SUSPENDED)) { pDevIns->Internal.s.fIntFlags |= PDMDEVINSINT_FLAGS_SUSPENDED; if (pDevIns->pDevReg->pfnSuspend) { if (!pDevIns->Internal.s.pfnAsyncNotify) { LogFlow(("PDMR3PowerOff: Notifying - device '%s'/%d\n", pDevIns->pDevReg->szDeviceName, pDevIns->iInstance)); pDevIns->pDevReg->pfnPowerOff(pDevIns); if (pDevIns->Internal.s.pfnAsyncNotify) LogFlow(("PDMR3PowerOff: Async notification started - device '%s'/%d\n", pDevIns->pDevReg->szDeviceName, pDevIns->iInstance)); } else if (pDevIns->Internal.s.pfnAsyncNotify(pDevIns)) { LogFlow(("PDMR3PowerOff: Async notification completed - device '%s'/%d\n", pDevIns->pDevReg->szDeviceName, pDevIns->iInstance)); pDevIns->Internal.s.pfnAsyncNotify = NULL; } if (pDevIns->Internal.s.pfnAsyncNotify) { pDevIns->Internal.s.fIntFlags &= ~PDMDEVINSINT_FLAGS_SUSPENDED; (*pcAsync)++; } } } } /** * This function will notify all the devices and their * attached drivers about the VM being powered off. * * @param pVM VM Handle. */ VMMR3DECL(void) PDMR3PowerOff(PVM pVM) { LogFlow(("PDMR3PowerOff:\n")); /* * The outer loop repeats until there are no more async requests. */ unsigned cAsync; for (unsigned iLoop = 0; ; iLoop++) { /* * 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.) */ cAsync = 0; for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3) { unsigned const cAsyncStart = cAsync; if (pDevIns->pDevReg->fFlags & PDM_DEVREG_FLAGS_FIRST_POWEROFF_NOTIFICATION) pdmR3PowerOffDev(pDevIns, &cAsync); if (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, &cAsync, pDevIns->pDevReg->szDeviceName, pDevIns->iInstance, pLun->iLun)) break; if ( cAsync == cAsyncStart && !(pDevIns->pDevReg->fFlags & PDM_DEVREG_FLAGS_FIRST_POWEROFF_NOTIFICATION)) pdmR3PowerOffDev(pDevIns, &cAsync); } #ifdef VBOX_WITH_USB for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext) { unsigned const cAsyncStart = 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, &cAsync, pUsbIns->pUsbReg->szDeviceName, pUsbIns->iInstance, pLun->iLun)) break; if (cAsync == cAsyncStart) pdmR3PowerOffUsb(pUsbIns, &cAsync); } #endif if (!cAsync) break; /* * Process requests. */ /** @todo This is utterly nuts and completely unsafe... will get back to it in a * bit I hope... */ int rc = VMR3AsyncPdmNotificationWaitU(&pVM->pUVM->aCpus[0]); AssertReleaseMsg(rc == VINF_SUCCESS, ("%Rrc\n", rc)); rc = VMR3ReqProcessU(pVM->pUVM, VMCPUID_ANY); AssertReleaseMsg(rc == VINF_SUCCESS, ("%Rrc\n", rc)); rc = VMR3ReqProcessU(pVM->pUVM, 0/*idDstCpu*/); AssertReleaseMsg(rc == VINF_SUCCESS, ("%Rrc\n", rc)); } /* * Suspend all threads. */ pdmR3ThreadSuspendAll(pVM); LogFlow(("PDMR3PowerOff: returns void\n")); } /** * Queries the base interace 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 pVM 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(PVM pVM, const char *pszDevice, unsigned iInstance, PPDMIBASE *ppBase) { LogFlow(("PDMR3DeviceQuery: pszDevice=%p:{%s} iInstance=%u ppBase=%p\n", pszDevice, pszDevice, iInstance, ppBase)); /* * Iterate registered devices looking for the device. */ size_t cchDevice = strlen(pszDevice); for (PPDMDEV pDev = pVM->pdm.s.pDevs; pDev; pDev = pDev->pNext) { if ( pDev->cchName == cchDevice && !memcmp(pDev->pDevReg->szDeviceName, 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 pVM 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(PVM pVM, 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)); /* * Find the LUN. */ PPDMLUN pLun; int rc = pdmR3DevFindLun(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 pVM 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(PVM pVM, 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)); /* * 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; } /** * Executes pending DMA transfers. * Forced Action handler. * * @param pVM VM handle. */ VMMR3DECL(void) PDMR3DmaRun(PVM pVM) { /* Note! Not really SMP safe; restrict it to VCPU 0. */ if (VMMGetCpuId(pVM) != 0) return; if (VM_FF_TESTANDCLEAR(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 VM handle. */ VMMR3DECL(int) PDMR3LockCall(PVM pVM) { return PDMR3CritSectEnterEx(&pVM->pdm.s.CritSect, true /* fHostCall */); } /** * Registers the VMM device heap * * @returns VBox status code. * @param pVM VM handle. * @param GCPhys The physical address. * @param pvHeap Ring-3 pointer. * @param cbSize Size of the heap. */ VMMR3DECL(int) PDMR3RegisterVMMDevHeap(PVM pVM, RTGCPHYS GCPhys, RTR3PTR pvHeap, unsigned cbSize) { Assert(pVM->pdm.s.pvVMMDevHeap == NULL); Log(("PDMR3RegisterVMMDevHeap %RGp %RHv %x\n", GCPhys, pvHeap, cbSize)); pVM->pdm.s.pvVMMDevHeap = pvHeap; pVM->pdm.s.GCPhysVMMDevHeap = GCPhys; pVM->pdm.s.cbVMMDevHeap = cbSize; pVM->pdm.s.cbVMMDevHeapLeft = cbSize; return VINF_SUCCESS; } /** * Unregisters the VMM device heap * * @returns VBox status code. * @param pVM VM handle. * @param GCPhys The physical address. */ VMMR3DECL(int) PDMR3UnregisterVMMDevHeap(PVM pVM, RTGCPHYS GCPhys) { Assert(pVM->pdm.s.GCPhysVMMDevHeap == GCPhys); Log(("PDMR3UnregisterVMMDevHeap %RGp\n", GCPhys)); pVM->pdm.s.pvVMMDevHeap = NULL; pVM->pdm.s.GCPhysVMMDevHeap = NIL_RTGCPHYS; pVM->pdm.s.cbVMMDevHeap = 0; pVM->pdm.s.cbVMMDevHeapLeft = 0; return VINF_SUCCESS; } /** * Allocates memory from the VMM device heap * * @returns VBox status code. * @param pVM VM handle. * @param cbSize Allocation size. * @param pv Ring-3 pointer. (out) */ VMMR3DECL(int) PDMR3VMMDevHeapAlloc(PVM pVM, unsigned cbSize, 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 %x\n", cbSize)); /** @todo not a real heap as there's currently only one user. */ *ppv = pVM->pdm.s.pvVMMDevHeap; pVM->pdm.s.cbVMMDevHeapLeft = 0; return VINF_SUCCESS; } /** * Frees memory from the VMM device heap * * @returns VBox status code. * @param pVM VM handle. * @param pv Ring-3 pointer. */ VMMR3DECL(int) PDMR3VMMDevHeapFree(PVM pVM, RTR3PTR pv) { Log(("PDMR3VMMDevHeapFree %RHv\n", pv)); /** @todo not a real heap as there's currently only one user. */ pVM->pdm.s.cbVMMDevHeapLeft = pVM->pdm.s.cbVMMDevHeap; return VINF_SUCCESS; } /** * Release the PDM lock if owned by the current VCPU * * @param pVM The VM to operate on. */ VMMR3DECL(void) PDMR3ReleaseOwnedLocks(PVM pVM) { while (PDMCritSectIsOwner(&pVM->pdm.s.CritSect)) PDMCritSectLeave(&pVM->pdm.s.CritSect); }