PDM.cpp@ 78126

Last change on this file since 78126 was 77348, checked in by vboxsync, 6 years ago
PDM: Added too on seemingly bogus release assertions. ticketref:18331
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1	/* $Id: PDM.cpp 77348 2019-02-18 15:08:33Z vboxsync $ */
2	/** @file
3	* PDM - Pluggable Device Manager.
4	*/
5
6	/*
7	* Copyright (C) 2006-2019 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/** @page pg_pdm PDM - The Pluggable Device & Driver Manager
20	*
21	* The PDM handles devices and their drivers in a flexible and dynamic manner.
22	*
23	* VirtualBox is designed to be very configurable, i.e. the ability to select
24	* virtual devices and configure them uniquely for a VM. For this reason
25	* virtual devices are not statically linked with the VMM but loaded, linked and
26	* instantiated at runtime by PDM using the information found in the
27	* Configuration Manager (CFGM).
28	*
29	* While the chief purpose of PDM is to manager of devices their drivers, it
30	* also serves as somewhere to put usful things like cross context queues, cross
31	* context synchronization (like critsect), VM centric thread management,
32	* asynchronous I/O framework, and so on.
33	*
34	* @sa @ref grp_pdm
35	* @subpage pg_pdm_block_cache
36	*
37	*
38	* @section sec_pdm_dev The Pluggable Devices
39	*
40	* Devices register themselves when the module containing them is loaded. PDM
41	* will call the entry point 'VBoxDevicesRegister' when loading a device module.
42	* The device module will then use the supplied callback table to check the VMM
43	* version and to register its devices. Each device has an unique name (within
44	* the VM configuration anyway). The name is not only used in PDM, but also in
45	* CFGM to organize device and device instance settings, and by anyone who wants
46	* to talk to a specific device instance.
47	*
48	* When all device modules have been successfully loaded PDM will instantiate
49	* those devices which are configured for the VM. Note that a device may have
50	* more than one instance, take network adaptors as an example. When
51	* instantiating a device PDM provides device instance memory and a callback
52	* table (aka Device Helpers / DevHlp) with the VM APIs which the device
53	* instance is trusted with.
54	*
55	* Some devices are trusted devices, most are not. The trusted devices are an
56	* integrated part of the VM and can obtain the VM handle, thus enabling them to
57	* call any VM API. Untrusted devices can only use the callbacks provided
58	* during device instantiation.
59	*
60	* The main purpose in having DevHlps rather than just giving all the devices
61	* the VM handle and let them call the internal VM APIs directly, is both to
62	* create a binary interface that can be supported across releases and to
63	* create a barrier between devices and the VM. (The trusted / untrusted bit
64	* hasn't turned out to be of much use btw., but it's easy to maintain so there
65	* isn't any point in removing it.)
66	*
67	* A device can provide a ring-0 and/or a raw-mode context extension to improve
68	* the VM performance by handling exits and traps (respectively) without
69	* requiring context switches (to ring-3). Callbacks for MMIO and I/O ports
70	* need to be registered specifically for the additional contexts for this to
71	* make sense. Also, the device has to be trusted to be loaded into R0/RC
72	* because of the extra privilege it entails. Note that raw-mode code and data
73	* will be subject to relocation.
74	*
75	*
76	* @subsection sec_pdm_dev_pci PCI Devices
77	*
78	* A PDM device usually registers one a PCI device during it's instantiation,
79	* legacy devices may register zero, while a few (currently none) more
80	* complicated devices may register multiple PCI functions or devices.
81	*
82	* The bus, device and function assignments can either be done explictly via the
83	* configuration or the registration call, or it can be left up to the PCI bus.
84	* The typical VBox configuration construct (ConsoleImpl2.cpp) will do explict
85	* assignments for all devices it's BusAssignmentManager class knows about.
86	*
87	* For explict CFGM style configuration, the "PCIBusNo", "PCIDeviceNo", and
88	* "PCIFunctionNo" values in the PDM device instance configuration (not the
89	* "config" subkey, but the top level one) will be picked up for the primary PCI
90	* device. The primary PCI configuration is by default the first one, but this
91	* can be controlled using the @a idxDevCfg parameter of the
92	* PDMDEVHLPR3::pfnPCIRegister method. For subsequent configuration (@a
93	* idxDevCfg > 0) the values are taken from the "PciDevNN" subkey, where "NN" is
94	* replaced by the @a idxDevCfg value.
95	*
96	* There's currently a limit of 256 PCI devices per PDM device.
97	*
98	*
99	* @section sec_pdm_special_devs Special Devices
100	*
101	* Several kinds of devices interacts with the VMM and/or other device and PDM
102	* will work like a mediator for these. The typical pattern is that the device
103	* calls a special registration device helper with a set of callbacks, PDM
104	* responds by copying this and providing a pointer to a set helper callbacks
105	* for that particular kind of device. Unlike interfaces where the callback
106	* table pointer is used a 'this' pointer, these arrangements will use the
107	* device instance pointer (PPDMDEVINS) as a kind of 'this' pointer.
108	*
109	* For an example of this kind of setup, see the PIC. The PIC registers itself
110	* by calling PDMDEVHLPR3::pfnPICRegister. PDM saves the device instance,
111	* copies the callback tables (PDMPICREG), resolving the ring-0 and raw-mode
112	* addresses in the process, and hands back the pointer to a set of helper
113	* methods (PDMPICHLPR3). The PCI device then queries the ring-0 and raw-mode
114	* helpers using PDMPICHLPR3::pfnGetR0Helpers and PDMPICHLPR3::pfnGetRCHelpers.
115	* The PCI device repeats ths pfnGetRCHelpers call in it's relocation method
116	* since the address changes when RC is relocated.
117	*
118	* @see grp_pdm_device
119	*
120	*
121	* @section sec_pdm_usbdev The Pluggable USB Devices
122	*
123	* USB devices are handled a little bit differently than other devices. The
124	* general concepts wrt. pluggability are mostly the same, but the details
125	* varies. The registration entry point is 'VBoxUsbRegister', the device
126	* instance is PDMUSBINS and the callbacks helpers are different. Also, USB
127	* device are restricted to ring-3 and cannot have any ring-0 or raw-mode
128	* extensions (at least not yet).
129	*
130	* The way USB devices work differs greatly from other devices though since they
131	* aren't attaches directly to the PCI/ISA/whatever system buses but via a
132	* USB host control (OHCI, UHCI or EHCI). USB devices handle USB requests
133	* (URBs) and does not register I/O ports, MMIO ranges or PCI bus
134	* devices/functions.
135	*
136	* @see grp_pdm_usbdev
137	*
138	*
139	* @section sec_pdm_drv The Pluggable Drivers
140	*
141	* The VM devices are often accessing host hardware or OS facilities. For most
142	* devices these facilities can be abstracted in one or more levels. These
143	* abstractions are called drivers.
144	*
145	* For instance take a DVD/CD drive. This can be connected to a SCSI
146	* controller, an ATA controller or a SATA controller. The basics of the DVD/CD
147	* drive implementation remains the same - eject, insert, read, seek, and such.
148	* (For the scsi SCSCI, you might want to speak SCSI directly to, but that can of
149	* course be fixed - see SCSI passthru.) So, it
150	* makes much sense to have a generic CD/DVD driver which implements this.
151	*
152	* Then the media 'inserted' into the DVD/CD drive can be a ISO image, or it can
153	* be read from a real CD or DVD drive (there are probably other custom formats
154	* someone could desire to read or construct too). So, it would make sense to
155	* have abstracted interfaces for dealing with this in a generic way so the
156	* cdrom unit doesn't have to implement it all. Thus we have created the
157	* CDROM/DVD media driver family.
158	*
159	* So, for this example the IDE controller #1 (i.e. secondary) will have
160	* the DVD/CD Driver attached to it's LUN #0 (master). When a media is mounted
161	* the DVD/CD Driver will have a ISO, HostDVD or RAW (media) Driver attached.
162	*
163	* It is possible to configure many levels of drivers inserting filters, loggers,
164	* or whatever you desire into the chain. We're using this for network sniffing,
165	* for instance.
166	*
167	* The drivers are loaded in a similar manner to that of a device, namely by
168	* iterating a keyspace in CFGM, load the modules listed there and call
169	* 'VBoxDriversRegister' with a callback table.
170	*
171	* @see grp_pdm_driver
172	*
173	*
174	* @section sec_pdm_ifs Interfaces
175	*
176	* The pluggable drivers and devices expose one standard interface (callback
177	* table) which is used to construct, destruct, attach, detach,( ++,) and query
178	* other interfaces. A device will query the interfaces required for it's
179	* operation during init and hot-plug. PDM may query some interfaces during
180	* runtime mounting too.
181	*
182	* An interface here means a function table contained within the device or
183	* driver instance data. Its methods are invoked with the function table pointer
184	* as the first argument and they will calculate the address of the device or
185	* driver instance data from it. (This is one of the aspects which might have
186	* been better done in C++.)
187	*
188	* @see grp_pdm_interfaces
189	*
190	*
191	* @section sec_pdm_utils Utilities
192	*
193	* As mentioned earlier, PDM is the location of any usful constructs that doesn't
194	* quite fit into IPRT. The next subsections will discuss these.
195	*
196	* One thing these APIs all have in common is that resources will be associated
197	* with a device / driver and automatically freed after it has been destroyed if
198	* the destructor didn't do this.
199	*
200	*
201	* @subsection sec_pdm_async_completion Async I/O
202	*
203	* The PDM Async I/O API provides a somewhat platform agnostic interface for
204	* asynchronous I/O. For reasons of performance and complexity this does not
205	* build upon any IPRT API.
206	*
207	* @todo more details.
208	*
209	* @see grp_pdm_async_completion
210	*
211	*
212	* @subsection sec_pdm_async_task Async Task - not implemented
213	*
214	* @todo implement and describe
215	*
216	* @see grp_pdm_async_task
217	*
218	*
219	* @subsection sec_pdm_critsect Critical Section
220	*
221	* The PDM Critical Section API is currently building on the IPRT API with the
222	* same name. It adds the possibility to use critical sections in ring-0 and
223	* raw-mode as well as in ring-3. There are certain restrictions on the RC and
224	* R0 usage though since we're not able to wait on it, nor wake up anyone that
225	* is waiting on it. These restrictions origins with the use of a ring-3 event
226	* semaphore. In a later incarnation we plan to replace the ring-3 event
227	* semaphore with a ring-0 one, thus enabling us to wake up waiters while
228	* exectuing in ring-0 and making the hardware assisted execution mode more
229	* efficient. (Raw-mode won't benefit much from this, naturally.)
230	*
231	* @see grp_pdm_critsect
232	*
233	*
234	* @subsection sec_pdm_queue Queue
235	*
236	* The PDM Queue API is for queuing one or more tasks for later consumption in
237	* ring-3 by EMT, and optionally forcing a delayed or ASAP return to ring-3. The
238	* queues can also be run on a timer basis as an alternative to the ASAP thing.
239	* The queue will be flushed at forced action time.
240	*
241	* A queue can also be used by another thread (a I/O worker for instance) to
242	* send work / events over to the EMT.
243	*
244	* @see grp_pdm_queue
245	*
246	*
247	* @subsection sec_pdm_task Task - not implemented yet
248	*
249	* The PDM Task API is for flagging a task for execution at a later point when
250	* we're back in ring-3, optionally forcing the ring-3 return to happen ASAP.
251	* As you can see the concept is similar to queues only simpler.
252	*
253	* A task can also be scheduled by another thread (a I/O worker for instance) as
254	* a mean of getting something done in EMT.
255	*
256	* @see grp_pdm_task
257	*
258	*
259	* @subsection sec_pdm_thread Thread
260	*
261	* The PDM Thread API is there to help devices and drivers manage their threads
262	* correctly wrt. power on, suspend, resume, power off and destruction.
263	*
264	* The general usage pattern for threads in the employ of devices and drivers is
265	* that they shuffle data or requests while the VM is running and stop doing
266	* this when the VM is paused or powered down. Rogue threads running while the
267	* VM is paused can cause the state to change during saving or have other
268	* unwanted side effects. The PDM Threads API ensures that this won't happen.
269	*
270	* @see grp_pdm_thread
271	*
272	*/
273
274
275	/*********************************************************************************************************************************
276	* Header Files *
277	*********************************************************************************************************************************/
278	#define LOG_GROUP LOG_GROUP_PDM
279	#define PDMPCIDEV_INCLUDE_PRIVATE /* Hack to get pdmpcidevint.h included at the right point. */
280	#include "PDMInternal.h"
281	#include <VBox/vmm/pdm.h>
282	#include <VBox/vmm/em.h>
283	#include <VBox/vmm/mm.h>
284	#include <VBox/vmm/pgm.h>
285	#include <VBox/vmm/ssm.h>
286	#include <VBox/vmm/hm.h>
287	#include <VBox/vmm/vm.h>
288	#include <VBox/vmm/uvm.h>
289	#include <VBox/vmm/vmm.h>
290	#include <VBox/param.h>
291	#include <VBox/err.h>
292	#include <VBox/sup.h>
293
294	#include <VBox/log.h>
295	#include <iprt/asm.h>
296	#include <iprt/assert.h>
297	#include <iprt/alloc.h>
298	#include <iprt/ctype.h>
299	#include <iprt/ldr.h>
300	#include <iprt/path.h>
301	#include <iprt/string.h>
302
303
304	/*********************************************************************************************************************************
305	* Defined Constants And Macros *
306	*********************************************************************************************************************************/
307	/** The PDM saved state version. */
308	#define PDM_SAVED_STATE_VERSION 5
309	/** Before the PDM audio architecture was introduced there was an "AudioSniffer"
310	* device which took care of multiplexing input/output audio data from/to various places.
311	* Thus this device is not needed/used anymore. */
312	#define PDM_SAVED_STATE_VERSION_PRE_PDM_AUDIO 4
313	#define PDM_SAVED_STATE_VERSION_PRE_NMI_FF 3
314
315	/** The number of nanoseconds a suspend callback needs to take before
316	* PDMR3Suspend warns about it taking too long. */
317	#define PDMSUSPEND_WARN_AT_NS UINT64_C(1200000000)
318
319	/** The number of nanoseconds a suspend callback needs to take before
320	* PDMR3PowerOff warns about it taking too long. */
321	#define PDMPOWEROFF_WARN_AT_NS UINT64_C( 900000000)
322
323
324	/*********************************************************************************************************************************
325	* Structures and Typedefs *
326	*********************************************************************************************************************************/
327	/**
328	* Statistics of asynchronous notification tasks - used by reset, suspend and
329	* power off.
330	*/
331	typedef struct PDMNOTIFYASYNCSTATS
332	{
333	/** The start timestamp. */
334	uint64_t uStartNsTs;
335	/** When to log the next time. */
336	uint64_t cNsElapsedNextLog;
337	/** The loop counter. */
338	uint32_t cLoops;
339	/** The number of pending asynchronous notification tasks. */
340	uint32_t cAsync;
341	/** The name of the operation (log prefix). */
342	const char *pszOp;
343	/** The current list buffer position. */
344	size_t offList;
345	/** String containing a list of the pending tasks. */
346	char szList[1024];
347	} PDMNOTIFYASYNCSTATS;
348	/** Pointer to the stats of pending asynchronous notification tasks. */
349	typedef PDMNOTIFYASYNCSTATS *PPDMNOTIFYASYNCSTATS;
350
351
352	/*********************************************************************************************************************************
353	* Internal Functions *
354	*********************************************************************************************************************************/
355	static DECLCALLBACK(int) pdmR3LiveExec(PVM pVM, PSSMHANDLE pSSM, uint32_t uPass);
356	static DECLCALLBACK(int) pdmR3SaveExec(PVM pVM, PSSMHANDLE pSSM);
357	static DECLCALLBACK(int) pdmR3LoadExec(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass);
358	static DECLCALLBACK(int) pdmR3LoadPrep(PVM pVM, PSSMHANDLE pSSM);
359
360	static FNDBGFHANDLERINT pdmR3InfoTracingIds;
361
362
363	/**
364	* Initializes the PDM part of the UVM.
365	*
366	* This doesn't really do much right now but has to be here for the sake
367	* of completeness.
368	*
369	* @returns VBox status code.
370	* @param pUVM Pointer to the user mode VM structure.
371	*/
372	VMMR3_INT_DECL(int) PDMR3InitUVM(PUVM pUVM)
373	{
374	AssertCompile(sizeof(pUVM->pdm.s) <= sizeof(pUVM->pdm.padding));
375	AssertRelease(sizeof(pUVM->pdm.s) <= sizeof(pUVM->pdm.padding));
376	pUVM->pdm.s.pModules = NULL;
377	pUVM->pdm.s.pCritSects = NULL;
378	pUVM->pdm.s.pRwCritSects = NULL;
379	return RTCritSectInit(&pUVM->pdm.s.ListCritSect);
380	}
381
382
383	/**
384	* Initializes the PDM.
385	*
386	* @returns VBox status code.
387	* @param pVM The cross context VM structure.
388	*/
389	VMMR3_INT_DECL(int) PDMR3Init(PVM pVM)
390	{
391	LogFlow(("PDMR3Init\n"));
392
393	/*
394	* Assert alignment and sizes.
395	*/
396	AssertRelease(!(RT_UOFFSETOF(VM, pdm.s) & 31));
397	AssertRelease(sizeof(pVM->pdm.s) <= sizeof(pVM->pdm.padding));
398	AssertCompileMemberAlignment(PDM, CritSect, sizeof(uintptr_t));
399
400	/*
401	* Init the structure.
402	*/
403	pVM->pdm.s.GCPhysVMMDevHeap = NIL_RTGCPHYS;
404	//pVM->pdm.s.idTracingDev = 0;
405	pVM->pdm.s.idTracingOther = 1024;
406
407	/*
408	* Initialize critical sections first.
409	*/
410	int rc = pdmR3CritSectBothInitStats(pVM);
411	if (RT_SUCCESS(rc))
412	rc = PDMR3CritSectInit(pVM, &pVM->pdm.s.CritSect, RT_SRC_POS, "PDM");
413	if (RT_SUCCESS(rc))
414	{
415	rc = PDMR3CritSectInit(pVM, &pVM->pdm.s.NopCritSect, RT_SRC_POS, "NOP");
416	if (RT_SUCCESS(rc))
417	pVM->pdm.s.NopCritSect.s.Core.fFlags \|= RTCRITSECT_FLAGS_NOP;
418	}
419
420	/*
421	* Initialize sub components.
422	*/
423	if (RT_SUCCESS(rc))
424	rc = pdmR3LdrInitU(pVM->pUVM);
425	#ifdef VBOX_WITH_PDM_ASYNC_COMPLETION
426	if (RT_SUCCESS(rc))
427	rc = pdmR3AsyncCompletionInit(pVM);
428	#endif
429	#ifdef VBOX_WITH_NETSHAPER
430	if (RT_SUCCESS(rc))
431	rc = pdmR3NetShaperInit(pVM);
432	#endif
433	if (RT_SUCCESS(rc))
434	rc = pdmR3BlkCacheInit(pVM);
435	if (RT_SUCCESS(rc))
436	rc = pdmR3DrvInit(pVM);
437	if (RT_SUCCESS(rc))
438	rc = pdmR3DevInit(pVM);
439	if (RT_SUCCESS(rc))
440	{
441	/*
442	* Register the saved state data unit.
443	*/
444	rc = SSMR3RegisterInternal(pVM, "pdm", 1, PDM_SAVED_STATE_VERSION, 128,
445	NULL, pdmR3LiveExec, NULL,
446	NULL, pdmR3SaveExec, NULL,
447	pdmR3LoadPrep, pdmR3LoadExec, NULL);
448	if (RT_SUCCESS(rc))
449	{
450	/*
451	* Register the info handlers.
452	*/
453	DBGFR3InfoRegisterInternal(pVM, "pdmtracingids",
454	"Displays the tracing IDs assigned by PDM to devices, USB device, drivers and more.",
455	pdmR3InfoTracingIds);
456
457	LogFlow(("PDM: Successfully initialized\n"));
458	return rc;
459	}
460	}
461
462	/*
463	* Cleanup and return failure.
464	*/
465	PDMR3Term(pVM);
466	LogFlow(("PDMR3Init: returns %Rrc\n", rc));
467	return rc;
468	}
469
470
471	/**
472	* Init phase completed callback.
473	*
474	* We use this for calling PDMDEVREG::pfnInitComplete callback after everything
475	* else has been initialized.
476	*
477	* @returns VBox status code.
478	* @param pVM The cross context VM structure.
479	* @param enmWhat The phase that was completed.
480	*/
481	VMMR3_INT_DECL(int) PDMR3InitCompleted(PVM pVM, VMINITCOMPLETED enmWhat)
482	{
483	#ifdef VBOX_WITH_RAW_MODE
484	if (enmWhat == VMINITCOMPLETED_RC)
485	#else
486	if (enmWhat == VMINITCOMPLETED_RING0)
487	#endif
488	return pdmR3DevInitComplete(pVM);
489	return VINF_SUCCESS;
490	}
491
492
493	/**
494	* Applies relocations to data and code managed by this
495	* component. This function will be called at init and
496	* whenever the VMM need to relocate it self inside the GC.
497	*
498	* @param pVM The cross context VM structure.
499	* @param offDelta Relocation delta relative to old location.
500	* @remark The loader subcomponent is relocated by PDMR3LdrRelocate() very
501	* early in the relocation phase.
502	*/
503	VMMR3_INT_DECL(void) PDMR3Relocate(PVM pVM, RTGCINTPTR offDelta)
504	{
505	LogFlow(("PDMR3Relocate\n"));
506
507	/*
508	* Queues.
509	*/
510	pdmR3QueueRelocate(pVM, offDelta);
511	pVM->pdm.s.pDevHlpQueueRC = PDMQueueRCPtr(pVM->pdm.s.pDevHlpQueueR3);
512
513	/*
514	* Critical sections.
515	*/
516	pdmR3CritSectBothRelocate(pVM);
517
518	/*
519	* The registered PIC.
520	*/
521	if (pVM->pdm.s.Pic.pDevInsRC)
522	{
523	pVM->pdm.s.Pic.pDevInsRC += offDelta;
524	pVM->pdm.s.Pic.pfnSetIrqRC += offDelta;
525	pVM->pdm.s.Pic.pfnGetInterruptRC += offDelta;
526	}
527
528	/*
529	* The registered APIC.
530	*/
531	if (pVM->pdm.s.Apic.pDevInsRC)
532	pVM->pdm.s.Apic.pDevInsRC += offDelta;
533
534	/*
535	* The registered I/O APIC.
536	*/
537	if (pVM->pdm.s.IoApic.pDevInsRC)
538	{
539	pVM->pdm.s.IoApic.pDevInsRC += offDelta;
540	pVM->pdm.s.IoApic.pfnSetIrqRC += offDelta;
541	if (pVM->pdm.s.IoApic.pfnSendMsiRC)
542	pVM->pdm.s.IoApic.pfnSendMsiRC += offDelta;
543	if (pVM->pdm.s.IoApic.pfnSetEoiRC)
544	pVM->pdm.s.IoApic.pfnSetEoiRC += offDelta;
545	}
546
547	/*
548	* The register PCI Buses.
549	*/
550	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pdm.s.aPciBuses); i++)
551	{
552	if (pVM->pdm.s.aPciBuses[i].pDevInsRC)
553	{
554	pVM->pdm.s.aPciBuses[i].pDevInsRC += offDelta;
555	pVM->pdm.s.aPciBuses[i].pfnSetIrqRC += offDelta;
556	}
557	}
558
559	/*
560	* Devices & Drivers.
561	*/
562	int rc;
563	PCPDMDEVHLPRC pDevHlpRC = NIL_RTRCPTR;
564	if (VM_IS_RAW_MODE_ENABLED(pVM))
565	{
566	rc = PDMR3LdrGetSymbolRC(pVM, NULL, "g_pdmRCDevHlp", &pDevHlpRC);
567	AssertReleaseMsgRC(rc, ("rc=%Rrc when resolving g_pdmRCDevHlp\n", rc));
568	}
569
570	PCPDMDRVHLPRC pDrvHlpRC = NIL_RTRCPTR;
571	if (VM_IS_RAW_MODE_ENABLED(pVM))
572	{
573	rc = PDMR3LdrGetSymbolRC(pVM, NULL, "g_pdmRCDevHlp", &pDrvHlpRC);
574	AssertReleaseMsgRC(rc, ("rc=%Rrc when resolving g_pdmRCDevHlp\n", rc));
575	}
576
577	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
578	{
579	if (pDevIns->pReg->fFlags & PDM_DEVREG_FLAGS_RC)
580	{
581	pDevIns->pHlpRC = pDevHlpRC;
582	pDevIns->pvInstanceDataRC = MMHyperR3ToRC(pVM, pDevIns->pvInstanceDataR3);
583	if (pDevIns->pCritSectRoR3)
584	pDevIns->pCritSectRoRC = MMHyperR3ToRC(pVM, pDevIns->pCritSectRoR3);
585	pDevIns->Internal.s.pVMRC = pVM->pVMRC;
586
587	PPDMPCIDEV pPciDev = pDevIns->Internal.s.pHeadPciDevR3;
588	if (pPciDev)
589	{
590	pDevIns->Internal.s.pHeadPciDevRC = MMHyperR3ToRC(pVM, pPciDev);
591	do
592	{
593	pPciDev->Int.s.pDevInsRC = MMHyperR3ToRC(pVM, pPciDev->Int.s.pDevInsR3);
594	pPciDev->Int.s.pPdmBusRC = MMHyperR3ToRC(pVM, pPciDev->Int.s.pPdmBusR3);
595	if (pPciDev->Int.s.pNextR3)
596	pPciDev->Int.s.pNextRC = MMHyperR3ToRC(pVM, pPciDev->Int.s.pNextR3);
597	pPciDev = pPciDev->Int.s.pNextR3;
598	} while (pPciDev);
599	}
600
601	if (pDevIns->pReg->pfnRelocate)
602	{
603	LogFlow(("PDMR3Relocate: Relocating device '%s'/%d\n",
604	pDevIns->pReg->szName, pDevIns->iInstance));
605	pDevIns->pReg->pfnRelocate(pDevIns, offDelta);
606	}
607	}
608
609	for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext)
610	{
611	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown)
612	{
613	if (pDrvIns->pReg->fFlags & PDM_DRVREG_FLAGS_RC)
614	{
615	pDrvIns->pHlpRC = pDrvHlpRC;
616	pDrvIns->pvInstanceDataRC = MMHyperR3ToRC(pVM, pDrvIns->pvInstanceDataR3);
617	pDrvIns->Internal.s.pVMRC = pVM->pVMRC;
618	if (pDrvIns->pReg->pfnRelocate)
619	{
620	LogFlow(("PDMR3Relocate: Relocating driver '%s'/%u attached to '%s'/%d/%u\n",
621	pDrvIns->pReg->szName, pDrvIns->iInstance,
622	pDevIns->pReg->szName, pDevIns->iInstance, pLun->iLun));
623	pDrvIns->pReg->pfnRelocate(pDrvIns, offDelta);
624	}
625	}
626	}
627	}
628
629	}
630	}
631
632
633	/**
634	* Worker for pdmR3Term that terminates a LUN chain.
635	*
636	* @param pVM The cross context VM structure.
637	* @param pLun The head of the chain.
638	* @param pszDevice The name of the device (for logging).
639	* @param iInstance The device instance number (for logging).
640	*/
641	static void pdmR3TermLuns(PVM pVM, PPDMLUN pLun, const char *pszDevice, unsigned iInstance)
642	{
643	RT_NOREF2(pszDevice, iInstance);
644
645	for (; pLun; pLun = pLun->pNext)
646	{
647	/*
648	* Destroy them one at a time from the bottom up.
649	* (The serial device/drivers depends on this - bad.)
650	*/
651	PPDMDRVINS pDrvIns = pLun->pBottom;
652	pLun->pBottom = pLun->pTop = NULL;
653	while (pDrvIns)
654	{
655	PPDMDRVINS pDrvNext = pDrvIns->Internal.s.pUp;
656
657	if (pDrvIns->pReg->pfnDestruct)
658	{
659	LogFlow(("pdmR3DevTerm: Destroying - driver '%s'/%d on LUN#%d of device '%s'/%d\n",
660	pDrvIns->pReg->szName, pDrvIns->iInstance, pLun->iLun, pszDevice, iInstance));
661	pDrvIns->pReg->pfnDestruct(pDrvIns);
662	}
663	pDrvIns->Internal.s.pDrv->cInstances--;
664
665	/* Order of resource freeing like in pdmR3DrvDestroyChain, but
666	* not all need to be done as they are done globally later. */
667	//PDMR3QueueDestroyDriver(pVM, pDrvIns);
668	TMR3TimerDestroyDriver(pVM, pDrvIns);
669	SSMR3DeregisterDriver(pVM, pDrvIns, NULL, 0);
670	//pdmR3ThreadDestroyDriver(pVM, pDrvIns);
671	//DBGFR3InfoDeregisterDriver(pVM, pDrvIns, NULL);
672	//pdmR3CritSectBothDeleteDriver(pVM, pDrvIns);
673	//PDMR3BlkCacheReleaseDriver(pVM, pDrvIns);
674	#ifdef VBOX_WITH_PDM_ASYNC_COMPLETION
675	//pdmR3AsyncCompletionTemplateDestroyDriver(pVM, pDrvIns);
676	#endif
677
678	/* Clear the driver struture to catch sloppy code. */
679	ASMMemFill32(pDrvIns, RT_UOFFSETOF_DYN(PDMDRVINS, achInstanceData[pDrvIns->pReg->cbInstance]), 0xdeadd0d0);
680
681	pDrvIns = pDrvNext;
682	}
683	}
684	}
685
686
687	/**
688	* Terminates the PDM.
689	*
690	* Termination means cleaning up and freeing all resources,
691	* the VM it self is at this point powered off or suspended.
692	*
693	* @returns VBox status code.
694	* @param pVM The cross context VM structure.
695	*/
696	VMMR3_INT_DECL(int) PDMR3Term(PVM pVM)
697	{
698	LogFlow(("PDMR3Term:\n"));
699	AssertMsg(PDMCritSectIsInitialized(&pVM->pdm.s.CritSect), ("bad init order!\n"));
700
701	/*
702	* Iterate the device instances and attach drivers, doing
703	* relevant destruction processing.
704	*
705	* N.B. There is no need to mess around freeing memory allocated
706	* from any MM heap since MM will do that in its Term function.
707	*/
708	/* usb ones first. */
709	for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext)
710	{
711	pdmR3TermLuns(pVM, pUsbIns->Internal.s.pLuns, pUsbIns->pReg->szName, pUsbIns->iInstance);
712
713	/*
714	* Detach it from the HUB (if it's actually attached to one) so the HUB has
715	* a chance to stop accessing any data.
716	*/
717	PPDMUSBHUB pHub = pUsbIns->Internal.s.pHub;
718	if (pHub)
719	{
720	int rc = pHub->Reg.pfnDetachDevice(pHub->pDrvIns, pUsbIns, pUsbIns->Internal.s.iPort);
721	if (RT_FAILURE(rc))
722	{
723	LogRel(("PDM: Failed to detach USB device '%s' instance %d from %p: %Rrc\n",
724	pUsbIns->pReg->szName, pUsbIns->iInstance, pHub, rc));
725	}
726	else
727	{
728	pHub->cAvailablePorts++;
729	Assert(pHub->cAvailablePorts > 0 && pHub->cAvailablePorts <= pHub->cPorts);
730	pUsbIns->Internal.s.pHub = NULL;
731	}
732	}
733
734	if (pUsbIns->pReg->pfnDestruct)
735	{
736	LogFlow(("pdmR3DevTerm: Destroying - device '%s'/%d\n",
737	pUsbIns->pReg->szName, pUsbIns->iInstance));
738	pUsbIns->pReg->pfnDestruct(pUsbIns);
739	}
740
741	//TMR3TimerDestroyUsb(pVM, pUsbIns);
742	//SSMR3DeregisterUsb(pVM, pUsbIns, NULL, 0);
743	pdmR3ThreadDestroyUsb(pVM, pUsbIns);
744	}
745
746	/* then the 'normal' ones. */
747	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
748	{
749	pdmR3TermLuns(pVM, pDevIns->Internal.s.pLunsR3, pDevIns->pReg->szName, pDevIns->iInstance);
750
751	if (pDevIns->pReg->pfnDestruct)
752	{
753	LogFlow(("pdmR3DevTerm: Destroying - device '%s'/%d\n",
754	pDevIns->pReg->szName, pDevIns->iInstance));
755	pDevIns->pReg->pfnDestruct(pDevIns);
756	}
757
758	TMR3TimerDestroyDevice(pVM, pDevIns);
759	SSMR3DeregisterDevice(pVM, pDevIns, NULL, 0);
760	pdmR3CritSectBothDeleteDevice(pVM, pDevIns);
761	pdmR3ThreadDestroyDevice(pVM, pDevIns);
762	PDMR3QueueDestroyDevice(pVM, pDevIns);
763	PGMR3PhysMMIOExDeregister(pVM, pDevIns, UINT32_MAX, UINT32_MAX);
764	#ifdef VBOX_WITH_PDM_ASYNC_COMPLETION
765	pdmR3AsyncCompletionTemplateDestroyDevice(pVM, pDevIns);
766	#endif
767	DBGFR3InfoDeregisterDevice(pVM, pDevIns, NULL);
768	}
769
770	/*
771	* Destroy all threads.
772	*/
773	pdmR3ThreadDestroyAll(pVM);
774
775	/*
776	* Destroy the block cache.
777	*/
778	pdmR3BlkCacheTerm(pVM);
779
780	#ifdef VBOX_WITH_NETSHAPER
781	/*
782	* Destroy network bandwidth groups.
783	*/
784	pdmR3NetShaperTerm(pVM);
785	#endif
786	#ifdef VBOX_WITH_PDM_ASYNC_COMPLETION
787	/*
788	* Free async completion managers.
789	*/
790	pdmR3AsyncCompletionTerm(pVM);
791	#endif
792
793	/*
794	* Free modules.
795	*/
796	pdmR3LdrTermU(pVM->pUVM);
797
798	/*
799	* Destroy the PDM lock.
800	*/
801	PDMR3CritSectDelete(&pVM->pdm.s.CritSect);
802	/* The MiscCritSect is deleted by PDMR3CritSectBothTerm later. */
803
804	LogFlow(("PDMR3Term: returns %Rrc\n", VINF_SUCCESS));
805	return VINF_SUCCESS;
806	}
807
808
809	/**
810	* Terminates the PDM part of the UVM.
811	*
812	* This will unload any modules left behind.
813	*
814	* @param pUVM Pointer to the user mode VM structure.
815	*/
816	VMMR3_INT_DECL(void) PDMR3TermUVM(PUVM pUVM)
817	{
818	/*
819	* In the normal cause of events we will now call pdmR3LdrTermU for
820	* the second time. In the case of init failure however, this might
821	* the first time, which is why we do it.
822	*/
823	pdmR3LdrTermU(pUVM);
824
825	Assert(pUVM->pdm.s.pCritSects == NULL);
826	Assert(pUVM->pdm.s.pRwCritSects == NULL);
827	RTCritSectDelete(&pUVM->pdm.s.ListCritSect);
828	}
829
830
831	/**
832	* Bits that are saved in pass 0 and in the final pass.
833	*
834	* @param pVM The cross context VM structure.
835	* @param pSSM The saved state handle.
836	*/
837	static void pdmR3SaveBoth(PVM pVM, PSSMHANDLE pSSM)
838	{
839	/*
840	* Save the list of device instances so we can check that they're all still
841	* there when we load the state and that nothing new has been added.
842	*/
843	uint32_t i = 0;
844	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3, i++)
845	{
846	SSMR3PutU32(pSSM, i);
847	SSMR3PutStrZ(pSSM, pDevIns->pReg->szName);
848	SSMR3PutU32(pSSM, pDevIns->iInstance);
849	}
850	SSMR3PutU32(pSSM, UINT32_MAX); /* terminator */
851	}
852
853
854	/**
855	* Live save.
856	*
857	* @returns VBox status code.
858	* @param pVM The cross context VM structure.
859	* @param pSSM The saved state handle.
860	* @param uPass The pass.
861	*/
862	static DECLCALLBACK(int) pdmR3LiveExec(PVM pVM, PSSMHANDLE pSSM, uint32_t uPass)
863	{
864	LogFlow(("pdmR3LiveExec:\n"));
865	AssertReturn(uPass == 0, VERR_SSM_UNEXPECTED_PASS);
866	pdmR3SaveBoth(pVM, pSSM);
867	return VINF_SSM_DONT_CALL_AGAIN;
868	}
869
870
871	/**
872	* Execute state save operation.
873	*
874	* @returns VBox status code.
875	* @param pVM The cross context VM structure.
876	* @param pSSM The saved state handle.
877	*/
878	static DECLCALLBACK(int) pdmR3SaveExec(PVM pVM, PSSMHANDLE pSSM)
879	{
880	LogFlow(("pdmR3SaveExec:\n"));
881
882	/*
883	* Save interrupt and DMA states.
884	*/
885	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
886	{
887	PVMCPU pVCpu = &pVM->aCpus[idCpu];
888	SSMR3PutU32(pSSM, VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_APIC));
889	SSMR3PutU32(pSSM, VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_PIC));
890	SSMR3PutU32(pSSM, VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_NMI));
891	SSMR3PutU32(pSSM, VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_SMI));
892	}
893	SSMR3PutU32(pSSM, VM_FF_IS_SET(pVM, VM_FF_PDM_DMA));
894
895	pdmR3SaveBoth(pVM, pSSM);
896	return VINF_SUCCESS;
897	}
898
899
900	/**
901	* Prepare state load operation.
902	*
903	* This will dispatch pending operations and clear the FFs governed by PDM and its devices.
904	*
905	* @returns VBox status code.
906	* @param pVM The cross context VM structure.
907	* @param pSSM The SSM handle.
908	*/
909	static DECLCALLBACK(int) pdmR3LoadPrep(PVM pVM, PSSMHANDLE pSSM)
910	{
911	LogFlow(("pdmR3LoadPrep: %s%s\n",
912	VM_FF_IS_SET(pVM, VM_FF_PDM_QUEUES) ? " VM_FF_PDM_QUEUES" : "",
913	VM_FF_IS_SET(pVM, VM_FF_PDM_DMA) ? " VM_FF_PDM_DMA" : ""));
914	#ifdef LOG_ENABLED
915	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
916	{
917	PVMCPU pVCpu = &pVM->aCpus[idCpu];
918	LogFlow(("pdmR3LoadPrep: VCPU %u %s%s\n", idCpu,
919	VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_APIC) ? " VMCPU_FF_INTERRUPT_APIC" : "",
920	VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_PIC) ? " VMCPU_FF_INTERRUPT_PIC" : ""));
921	}
922	#endif
923	NOREF(pSSM);
924
925	/*
926	* In case there is work pending that will raise an interrupt,
927	* start a DMA transfer, or release a lock. (unlikely)
928	*/
929	if (VM_FF_IS_SET(pVM, VM_FF_PDM_QUEUES))
930	PDMR3QueueFlushAll(pVM);
931
932	/* Clear the FFs. */
933	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
934	{
935	PVMCPU pVCpu = &pVM->aCpus[idCpu];
936	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_APIC);
937	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_PIC);
938	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_NMI);
939	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_SMI);
940	}
941	VM_FF_CLEAR(pVM, VM_FF_PDM_DMA);
942
943	return VINF_SUCCESS;
944	}
945
946
947	/**
948	* Execute state load operation.
949	*
950	* @returns VBox status code.
951	* @param pVM The cross context VM structure.
952	* @param pSSM SSM operation handle.
953	* @param uVersion Data layout version.
954	* @param uPass The data pass.
955	*/
956	static DECLCALLBACK(int) pdmR3LoadExec(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
957	{
958	int rc;
959
960	LogFlow(("pdmR3LoadExec: uPass=%#x\n", uPass));
961
962	/*
963	* Validate version.
964	*/
965	if ( uVersion != PDM_SAVED_STATE_VERSION
966	&& uVersion != PDM_SAVED_STATE_VERSION_PRE_NMI_FF
967	&& uVersion != PDM_SAVED_STATE_VERSION_PRE_PDM_AUDIO)
968	{
969	AssertMsgFailed(("Invalid version uVersion=%d!\n", uVersion));
970	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
971	}
972
973	if (uPass == SSM_PASS_FINAL)
974	{
975	/*
976	* Load the interrupt and DMA states.
977	*/
978	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
979	{
980	PVMCPU pVCpu = &pVM->aCpus[idCpu];
981
982	/* APIC interrupt */
983	uint32_t fInterruptPending = 0;
984	rc = SSMR3GetU32(pSSM, &fInterruptPending);
985	if (RT_FAILURE(rc))
986	return rc;
987	if (fInterruptPending & ~1)
988	{
989	AssertMsgFailed(("fInterruptPending=%#x (APIC)\n", fInterruptPending));
990	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
991	}
992	AssertRelease(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_APIC)); /** @todo r=bird: bogus assertion, see @ticketref{18331} */
993	if (fInterruptPending)
994	VMCPU_FF_SET(pVCpu, VMCPU_FF_INTERRUPT_APIC);
995
996	/* PIC interrupt */
997	fInterruptPending = 0;
998	rc = SSMR3GetU32(pSSM, &fInterruptPending);
999	if (RT_FAILURE(rc))
1000	return rc;
1001	if (fInterruptPending & ~1)
1002	{
1003	AssertMsgFailed(("fInterruptPending=%#x (PIC)\n", fInterruptPending));
1004	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
1005	}
1006	AssertRelease(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_PIC)); /** @todo r=bird: bogus assertion, see @ticketref{18331} */
1007	if (fInterruptPending)
1008	VMCPU_FF_SET(pVCpu, VMCPU_FF_INTERRUPT_PIC);
1009
1010	if (uVersion > PDM_SAVED_STATE_VERSION_PRE_NMI_FF)
1011	{
1012	/* NMI interrupt */
1013	fInterruptPending = 0;
1014	rc = SSMR3GetU32(pSSM, &fInterruptPending);
1015	if (RT_FAILURE(rc))
1016	return rc;
1017	if (fInterruptPending & ~1)
1018	{
1019	AssertMsgFailed(("fInterruptPending=%#x (NMI)\n", fInterruptPending));
1020	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
1021	}
1022	AssertRelease(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_NMI));
1023	if (fInterruptPending)
1024	VMCPU_FF_SET(pVCpu, VMCPU_FF_INTERRUPT_NMI);
1025
1026	/* SMI interrupt */
1027	fInterruptPending = 0;
1028	rc = SSMR3GetU32(pSSM, &fInterruptPending);
1029	if (RT_FAILURE(rc))
1030	return rc;
1031	if (fInterruptPending & ~1)
1032	{
1033	AssertMsgFailed(("fInterruptPending=%#x (SMI)\n", fInterruptPending));
1034	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
1035	}
1036	AssertRelease(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_SMI));
1037	if (fInterruptPending)
1038	VMCPU_FF_SET(pVCpu, VMCPU_FF_INTERRUPT_SMI);
1039	}
1040	}
1041
1042	/* DMA pending */
1043	uint32_t fDMAPending = 0;
1044	rc = SSMR3GetU32(pSSM, &fDMAPending);
1045	if (RT_FAILURE(rc))
1046	return rc;
1047	if (fDMAPending & ~1)
1048	{
1049	AssertMsgFailed(("fDMAPending=%#x\n", fDMAPending));
1050	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
1051	}
1052	if (fDMAPending)
1053	VM_FF_SET(pVM, VM_FF_PDM_DMA);
1054	Log(("pdmR3LoadExec: VM_FF_PDM_DMA=%RTbool\n", VM_FF_IS_SET(pVM, VM_FF_PDM_DMA)));
1055	}
1056
1057	/*
1058	* Load the list of devices and verify that they are all there.
1059	*/
1060	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
1061	pDevIns->Internal.s.fIntFlags &= ~PDMDEVINSINT_FLAGS_FOUND;
1062
1063	for (uint32_t i = 0; ; i++)
1064	{
1065	/* Get the sequence number / terminator. */
1066	uint32_t u32Sep;
1067	rc = SSMR3GetU32(pSSM, &u32Sep);
1068	if (RT_FAILURE(rc))
1069	return rc;
1070	if (u32Sep == UINT32_MAX)
1071	break;
1072	if (u32Sep != i)
1073	AssertMsgFailedReturn(("Out of sequence. u32Sep=%#x i=%#x\n", u32Sep, i), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
1074
1075	/* Get the name and instance number. */
1076	char szName[RT_SIZEOFMEMB(PDMDEVREG, szName)];
1077	rc = SSMR3GetStrZ(pSSM, szName, sizeof(szName));
1078	if (RT_FAILURE(rc))
1079	return rc;
1080	uint32_t iInstance;
1081	rc = SSMR3GetU32(pSSM, &iInstance);
1082	if (RT_FAILURE(rc))
1083	return rc;
1084
1085	/* Try locate it. */
1086	PPDMDEVINS pDevIns;
1087	for (pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
1088	if ( !RTStrCmp(szName, pDevIns->pReg->szName)
1089	&& pDevIns->iInstance == iInstance)
1090	{
1091	AssertLogRelMsgReturn(!(pDevIns->Internal.s.fIntFlags & PDMDEVINSINT_FLAGS_FOUND),
1092	("%s/#%u\n", pDevIns->pReg->szName, pDevIns->iInstance),
1093	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
1094	pDevIns->Internal.s.fIntFlags \|= PDMDEVINSINT_FLAGS_FOUND;
1095	break;
1096	}
1097
1098	if (!pDevIns)
1099	{
1100	bool fSkip = false;
1101
1102	/* Skip the non-existing (deprecated) "AudioSniffer" device stored in the saved state. */
1103	if ( uVersion <= PDM_SAVED_STATE_VERSION_PRE_PDM_AUDIO
1104	&& !RTStrCmp(szName, "AudioSniffer"))
1105	fSkip = true;
1106
1107	if (!fSkip)
1108	{
1109	LogRel(("Device '%s'/%d not found in current config\n", szName, iInstance));
1110	if (SSMR3HandleGetAfter(pSSM) != SSMAFTER_DEBUG_IT)
1111	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Device '%s'/%d not found in current config"), szName, iInstance);
1112	}
1113	}
1114	}
1115
1116	/*
1117	* Check that no additional devices were configured.
1118	*/
1119	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
1120	if (!(pDevIns->Internal.s.fIntFlags & PDMDEVINSINT_FLAGS_FOUND))
1121	{
1122	LogRel(("Device '%s'/%d not found in the saved state\n", pDevIns->pReg->szName, pDevIns->iInstance));
1123	if (SSMR3HandleGetAfter(pSSM) != SSMAFTER_DEBUG_IT)
1124	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Device '%s'/%d not found in the saved state"),
1125	pDevIns->pReg->szName, pDevIns->iInstance);
1126	}
1127
1128	return VINF_SUCCESS;
1129	}
1130
1131
1132	/**
1133	* Worker for PDMR3PowerOn that deals with one driver.
1134	*
1135	* @param pDrvIns The driver instance.
1136	* @param pszDevName The parent device name.
1137	* @param iDevInstance The parent device instance number.
1138	* @param iLun The parent LUN number.
1139	*/
1140	DECLINLINE(int) pdmR3PowerOnDrv(PPDMDRVINS pDrvIns, const char *pszDevName, uint32_t iDevInstance, uint32_t iLun)
1141	{
1142	Assert(pDrvIns->Internal.s.fVMSuspended);
1143	if (pDrvIns->pReg->pfnPowerOn)
1144	{
1145	LogFlow(("PDMR3PowerOn: Notifying - driver '%s'/%d on LUN#%d of device '%s'/%d\n",
1146	pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance));
1147	int rc = VINF_SUCCESS; pDrvIns->pReg->pfnPowerOn(pDrvIns);
1148	if (RT_FAILURE(rc))
1149	{
1150	LogRel(("PDMR3PowerOn: Driver '%s'/%d on LUN#%d of device '%s'/%d -> %Rrc\n",
1151	pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance, rc));
1152	return rc;
1153	}
1154	}
1155	pDrvIns->Internal.s.fVMSuspended = false;
1156	return VINF_SUCCESS;
1157	}
1158
1159
1160	/**
1161	* Worker for PDMR3PowerOn that deals with one USB device instance.
1162	*
1163	* @returns VBox status code.
1164	* @param pUsbIns The USB device instance.
1165	*/
1166	DECLINLINE(int) pdmR3PowerOnUsb(PPDMUSBINS pUsbIns)
1167	{
1168	Assert(pUsbIns->Internal.s.fVMSuspended);
1169	if (pUsbIns->pReg->pfnVMPowerOn)
1170	{
1171	LogFlow(("PDMR3PowerOn: Notifying - device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance));
1172	int rc = VINF_SUCCESS; pUsbIns->pReg->pfnVMPowerOn(pUsbIns);
1173	if (RT_FAILURE(rc))
1174	{
1175	LogRel(("PDMR3PowerOn: Device '%s'/%d -> %Rrc\n", pUsbIns->pReg->szName, pUsbIns->iInstance, rc));
1176	return rc;
1177	}
1178	}
1179	pUsbIns->Internal.s.fVMSuspended = false;
1180	return VINF_SUCCESS;
1181	}
1182
1183
1184	/**
1185	* Worker for PDMR3PowerOn that deals with one device instance.
1186	*
1187	* @returns VBox status code.
1188	* @param pDevIns The device instance.
1189	*/
1190	DECLINLINE(int) pdmR3PowerOnDev(PPDMDEVINS pDevIns)
1191	{
1192	Assert(pDevIns->Internal.s.fIntFlags & PDMDEVINSINT_FLAGS_SUSPENDED);
1193	if (pDevIns->pReg->pfnPowerOn)
1194	{
1195	LogFlow(("PDMR3PowerOn: Notifying - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance));
1196	PDMCritSectEnter(pDevIns->pCritSectRoR3, VERR_IGNORED);
1197	int rc = VINF_SUCCESS; pDevIns->pReg->pfnPowerOn(pDevIns);
1198	PDMCritSectLeave(pDevIns->pCritSectRoR3);
1199	if (RT_FAILURE(rc))
1200	{
1201	LogRel(("PDMR3PowerOn: Device '%s'/%d -> %Rrc\n", pDevIns->pReg->szName, pDevIns->iInstance, rc));
1202	return rc;
1203	}
1204	}
1205	pDevIns->Internal.s.fIntFlags &= ~PDMDEVINSINT_FLAGS_SUSPENDED;
1206	return VINF_SUCCESS;
1207	}
1208
1209
1210	/**
1211	* This function will notify all the devices and their
1212	* attached drivers about the VM now being powered on.
1213	*
1214	* @param pVM The cross context VM structure.
1215	*/
1216	VMMR3DECL(void) PDMR3PowerOn(PVM pVM)
1217	{
1218	LogFlow(("PDMR3PowerOn:\n"));
1219
1220	/*
1221	* Iterate thru the device instances and USB device instances,
1222	* processing the drivers associated with those.
1223	*/
1224	int rc = VINF_SUCCESS;
1225	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns && RT_SUCCESS(rc); pDevIns = pDevIns->Internal.s.pNextR3)
1226	{
1227	for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun && RT_SUCCESS(rc); pLun = pLun->pNext)
1228	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns && RT_SUCCESS(rc); pDrvIns = pDrvIns->Internal.s.pDown)
1229	rc = pdmR3PowerOnDrv(pDrvIns, pDevIns->pReg->szName, pDevIns->iInstance, pLun->iLun);
1230	if (RT_SUCCESS(rc))
1231	rc = pdmR3PowerOnDev(pDevIns);
1232	}
1233
1234	#ifdef VBOX_WITH_USB
1235	for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns && RT_SUCCESS(rc); pUsbIns = pUsbIns->Internal.s.pNext)
1236	{
1237	for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun && RT_SUCCESS(rc); pLun = pLun->pNext)
1238	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns && RT_SUCCESS(rc); pDrvIns = pDrvIns->Internal.s.pDown)
1239	rc = pdmR3PowerOnDrv(pDrvIns, pUsbIns->pReg->szName, pUsbIns->iInstance, pLun->iLun);
1240	if (RT_SUCCESS(rc))
1241	rc = pdmR3PowerOnUsb(pUsbIns);
1242	}
1243	#endif
1244
1245	#ifdef VBOX_WITH_PDM_ASYNC_COMPLETION
1246	pdmR3AsyncCompletionResume(pVM);
1247	#endif
1248
1249	/*
1250	* Resume all threads.
1251	*/
1252	if (RT_SUCCESS(rc))
1253	pdmR3ThreadResumeAll(pVM);
1254
1255	/*
1256	* On failure, clean up via PDMR3Suspend.
1257	*/
1258	if (RT_FAILURE(rc))
1259	PDMR3Suspend(pVM);
1260
1261	LogFlow(("PDMR3PowerOn: returns %Rrc\n", rc));
1262	return /rc/;
1263	}
1264
1265
1266	/**
1267	* Initializes the asynchronous notifi stats structure.
1268	*
1269	* @param pThis The asynchronous notifification stats.
1270	* @param pszOp The name of the operation.
1271	*/
1272	static void pdmR3NotifyAsyncInit(PPDMNOTIFYASYNCSTATS pThis, const char *pszOp)
1273	{
1274	pThis->uStartNsTs = RTTimeNanoTS();
1275	pThis->cNsElapsedNextLog = 0;
1276	pThis->cLoops = 0;
1277	pThis->cAsync = 0;
1278	pThis->pszOp = pszOp;
1279	pThis->offList = 0;
1280	pThis->szList[0] = '\0';
1281	}
1282
1283
1284	/**
1285	* Begin a new loop, prepares to gather new stats.
1286	*
1287	* @param pThis The asynchronous notifification stats.
1288	*/
1289	static void pdmR3NotifyAsyncBeginLoop(PPDMNOTIFYASYNCSTATS pThis)
1290	{
1291	pThis->cLoops++;
1292	pThis->cAsync = 0;
1293	pThis->offList = 0;
1294	pThis->szList[0] = '\0';
1295	}
1296
1297
1298	/**
1299	* Records a device or USB device with a pending asynchronous notification.
1300	*
1301	* @param pThis The asynchronous notifification stats.
1302	* @param pszName The name of the thing.
1303	* @param iInstance The instance number.
1304	*/
1305	static void pdmR3NotifyAsyncAdd(PPDMNOTIFYASYNCSTATS pThis, const char *pszName, uint32_t iInstance)
1306	{
1307	pThis->cAsync++;
1308	if (pThis->offList < sizeof(pThis->szList) - 4)
1309	pThis->offList += RTStrPrintf(&pThis->szList[pThis->offList], sizeof(pThis->szList) - pThis->offList,
1310	pThis->offList == 0 ? "%s/%u" : ", %s/%u",
1311	pszName, iInstance);
1312	}
1313
1314
1315	/**
1316	* Records the asynchronous completition of a reset, suspend or power off.
1317	*
1318	* @param pThis The asynchronous notifification stats.
1319	* @param pszDrvName The driver name.
1320	* @param iDrvInstance The driver instance number.
1321	* @param pszDevName The device or USB device name.
1322	* @param iDevInstance The device or USB device instance number.
1323	* @param iLun The LUN.
1324	*/
1325	static void pdmR3NotifyAsyncAddDrv(PPDMNOTIFYASYNCSTATS pThis, const char *pszDrvName, uint32_t iDrvInstance,
1326	const char *pszDevName, uint32_t iDevInstance, uint32_t iLun)
1327	{
1328	pThis->cAsync++;
1329	if (pThis->offList < sizeof(pThis->szList) - 8)
1330	pThis->offList += RTStrPrintf(&pThis->szList[pThis->offList], sizeof(pThis->szList) - pThis->offList,
1331	pThis->offList == 0 ? "%s/%u/%u/%s/%u" : ", %s/%u/%u/%s/%u",
1332	pszDevName, iDevInstance, iLun, pszDrvName, iDrvInstance);
1333	}
1334
1335
1336	/**
1337	* Log the stats.
1338	*
1339	* @param pThis The asynchronous notifification stats.
1340	*/
1341	static void pdmR3NotifyAsyncLog(PPDMNOTIFYASYNCSTATS pThis)
1342	{
1343	/*
1344	* Return if we shouldn't log at this point.
1345	* We log with an internval increasing from 0 sec to 60 sec.
1346	*/
1347	if (!pThis->cAsync)
1348	return;
1349
1350	uint64_t cNsElapsed = RTTimeNanoTS() - pThis->uStartNsTs;
1351	if (cNsElapsed < pThis->cNsElapsedNextLog)
1352	return;
1353
1354	if (pThis->cNsElapsedNextLog == 0)
1355	pThis->cNsElapsedNextLog = RT_NS_1SEC;
1356	else if (pThis->cNsElapsedNextLog >= RT_NS_1MIN / 2)
1357	pThis->cNsElapsedNextLog = RT_NS_1MIN;
1358	else
1359	pThis->cNsElapsedNextLog *= 2;
1360
1361	/*
1362	* Do the logging.
1363	*/
1364	LogRel(("%s: after %5llu ms, %u loops: %u async tasks - %s\n",
1365	pThis->pszOp, cNsElapsed / RT_NS_1MS, pThis->cLoops, pThis->cAsync, pThis->szList));
1366	}
1367
1368
1369	/**
1370	* Wait for events and process pending requests.
1371	*
1372	* @param pThis The asynchronous notifification stats.
1373	* @param pVM The cross context VM structure.
1374	*/
1375	static void pdmR3NotifyAsyncWaitAndProcessRequests(PPDMNOTIFYASYNCSTATS pThis, PVM pVM)
1376	{
1377	VM_ASSERT_EMT0(pVM);
1378	int rc = VMR3AsyncPdmNotificationWaitU(&pVM->pUVM->aCpus[0]);
1379	AssertReleaseMsg(rc == VINF_SUCCESS, ("%Rrc - %s - %s\n", rc, pThis->pszOp, pThis->szList));
1380
1381	rc = VMR3ReqProcessU(pVM->pUVM, VMCPUID_ANY, true /fPriorityOnly/);
1382	AssertReleaseMsg(rc == VINF_SUCCESS, ("%Rrc - %s - %s\n", rc, pThis->pszOp, pThis->szList));
1383	rc = VMR3ReqProcessU(pVM->pUVM, 0/idDstCpu/, true /fPriorityOnly/);
1384	AssertReleaseMsg(rc == VINF_SUCCESS, ("%Rrc - %s - %s\n", rc, pThis->pszOp, pThis->szList));
1385	}
1386
1387
1388	/**
1389	* Worker for PDMR3Reset that deals with one driver.
1390	*
1391	* @param pDrvIns The driver instance.
1392	* @param pAsync The structure for recording asynchronous
1393	* notification tasks.
1394	* @param pszDevName The parent device name.
1395	* @param iDevInstance The parent device instance number.
1396	* @param iLun The parent LUN number.
1397	*/
1398	DECLINLINE(bool) pdmR3ResetDrv(PPDMDRVINS pDrvIns, PPDMNOTIFYASYNCSTATS pAsync,
1399	const char *pszDevName, uint32_t iDevInstance, uint32_t iLun)
1400	{
1401	if (!pDrvIns->Internal.s.fVMReset)
1402	{
1403	pDrvIns->Internal.s.fVMReset = true;
1404	if (pDrvIns->pReg->pfnReset)
1405	{
1406	if (!pDrvIns->Internal.s.pfnAsyncNotify)
1407	{
1408	LogFlow(("PDMR3Reset: Notifying - driver '%s'/%d on LUN#%d of device '%s'/%d\n",
1409	pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance));
1410	pDrvIns->pReg->pfnReset(pDrvIns);
1411	if (pDrvIns->Internal.s.pfnAsyncNotify)
1412	LogFlow(("PDMR3Reset: Async notification started - driver '%s'/%d on LUN#%d of device '%s'/%d\n",
1413	pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance));
1414	}
1415	else if (pDrvIns->Internal.s.pfnAsyncNotify(pDrvIns))
1416	{
1417	LogFlow(("PDMR3Reset: Async notification completed - driver '%s'/%d on LUN#%d of device '%s'/%d\n",
1418	pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance));
1419	pDrvIns->Internal.s.pfnAsyncNotify = NULL;
1420	}
1421	if (pDrvIns->Internal.s.pfnAsyncNotify)
1422	{
1423	pDrvIns->Internal.s.fVMReset = false;
1424	pdmR3NotifyAsyncAddDrv(pAsync, pDrvIns->Internal.s.pDrv->pReg->szName, pDrvIns->iInstance,
1425	pszDevName, iDevInstance, iLun);
1426	return false;
1427	}
1428	}
1429	}
1430	return true;
1431	}
1432
1433
1434	/**
1435	* Worker for PDMR3Reset that deals with one USB device instance.
1436	*
1437	* @param pUsbIns The USB device instance.
1438	* @param pAsync The structure for recording asynchronous
1439	* notification tasks.
1440	*/
1441	DECLINLINE(void) pdmR3ResetUsb(PPDMUSBINS pUsbIns, PPDMNOTIFYASYNCSTATS pAsync)
1442	{
1443	if (!pUsbIns->Internal.s.fVMReset)
1444	{
1445	pUsbIns->Internal.s.fVMReset = true;
1446	if (pUsbIns->pReg->pfnVMReset)
1447	{
1448	if (!pUsbIns->Internal.s.pfnAsyncNotify)
1449	{
1450	LogFlow(("PDMR3Reset: Notifying - device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance));
1451	pUsbIns->pReg->pfnVMReset(pUsbIns);
1452	if (pUsbIns->Internal.s.pfnAsyncNotify)
1453	LogFlow(("PDMR3Reset: Async notification started - device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance));
1454	}
1455	else if (pUsbIns->Internal.s.pfnAsyncNotify(pUsbIns))
1456	{
1457	LogFlow(("PDMR3Reset: Async notification completed - device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance));
1458	pUsbIns->Internal.s.pfnAsyncNotify = NULL;
1459	}
1460	if (pUsbIns->Internal.s.pfnAsyncNotify)
1461	{
1462	pUsbIns->Internal.s.fVMReset = false;
1463	pdmR3NotifyAsyncAdd(pAsync, pUsbIns->Internal.s.pUsbDev->pReg->szName, pUsbIns->iInstance);
1464	}
1465	}
1466	}
1467	}
1468
1469
1470	/**
1471	* Worker for PDMR3Reset that deals with one device instance.
1472	*
1473	* @param pDevIns The device instance.
1474	* @param pAsync The structure for recording asynchronous
1475	* notification tasks.
1476	*/
1477	DECLINLINE(void) pdmR3ResetDev(PPDMDEVINS pDevIns, PPDMNOTIFYASYNCSTATS pAsync)
1478	{
1479	if (!(pDevIns->Internal.s.fIntFlags & PDMDEVINSINT_FLAGS_RESET))
1480	{
1481	pDevIns->Internal.s.fIntFlags \|= PDMDEVINSINT_FLAGS_RESET;
1482	if (pDevIns->pReg->pfnReset)
1483	{
1484	uint64_t cNsElapsed = RTTimeNanoTS();
1485	PDMCritSectEnter(pDevIns->pCritSectRoR3, VERR_IGNORED);
1486
1487	if (!pDevIns->Internal.s.pfnAsyncNotify)
1488	{
1489	LogFlow(("PDMR3Reset: Notifying - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance));
1490	pDevIns->pReg->pfnReset(pDevIns);
1491	if (pDevIns->Internal.s.pfnAsyncNotify)
1492	LogFlow(("PDMR3Reset: Async notification started - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance));
1493	}
1494	else if (pDevIns->Internal.s.pfnAsyncNotify(pDevIns))
1495	{
1496	LogFlow(("PDMR3Reset: Async notification completed - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance));
1497	pDevIns->Internal.s.pfnAsyncNotify = NULL;
1498	}
1499	if (pDevIns->Internal.s.pfnAsyncNotify)
1500	{
1501	pDevIns->Internal.s.fIntFlags &= ~PDMDEVINSINT_FLAGS_RESET;
1502	pdmR3NotifyAsyncAdd(pAsync, pDevIns->Internal.s.pDevR3->pReg->szName, pDevIns->iInstance);
1503	}
1504
1505	PDMCritSectLeave(pDevIns->pCritSectRoR3);
1506	cNsElapsed = RTTimeNanoTS() - cNsElapsed;
1507	if (cNsElapsed >= PDMSUSPEND_WARN_AT_NS)
1508	LogRel(("PDMR3Reset: Device '%s'/%d took %'llu ns to reset\n",
1509	pDevIns->pReg->szName, pDevIns->iInstance, cNsElapsed));
1510	}
1511	}
1512	}
1513
1514
1515	/**
1516	* Resets a virtual CPU.
1517	*
1518	* Used by PDMR3Reset and CPU hot plugging.
1519	*
1520	* @param pVCpu The cross context virtual CPU structure.
1521	*/
1522	VMMR3_INT_DECL(void) PDMR3ResetCpu(PVMCPU pVCpu)
1523	{
1524	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_APIC);
1525	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_PIC);
1526	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_NMI);
1527	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_SMI);
1528	}
1529
1530
1531	/**
1532	* This function will notify all the devices and their attached drivers about
1533	* the VM now being reset.
1534	*
1535	* @param pVM The cross context VM structure.
1536	*/
1537	VMMR3_INT_DECL(void) PDMR3Reset(PVM pVM)
1538	{
1539	LogFlow(("PDMR3Reset:\n"));
1540
1541	/*
1542	* Clear all the reset flags.
1543	*/
1544	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
1545	{
1546	pDevIns->Internal.s.fIntFlags &= ~PDMDEVINSINT_FLAGS_RESET;
1547	for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext)
1548	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown)
1549	pDrvIns->Internal.s.fVMReset = false;
1550	}
1551	#ifdef VBOX_WITH_USB
1552	for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext)
1553	{
1554	pUsbIns->Internal.s.fVMReset = false;
1555	for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun; pLun = pLun->pNext)
1556	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown)
1557	pDrvIns->Internal.s.fVMReset = false;
1558	}
1559	#endif
1560
1561	/*
1562	* The outer loop repeats until there are no more async requests.
1563	*/
1564	PDMNOTIFYASYNCSTATS Async;
1565	pdmR3NotifyAsyncInit(&Async, "PDMR3Reset");
1566	for (;;)
1567	{
1568	pdmR3NotifyAsyncBeginLoop(&Async);
1569
1570	/*
1571	* Iterate thru the device instances and USB device instances,
1572	* processing the drivers associated with those.
1573	*/
1574	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
1575	{
1576	unsigned const cAsyncStart = Async.cAsync;
1577
1578	if (pDevIns->pReg->fFlags & PDM_DEVREG_FLAGS_FIRST_RESET_NOTIFICATION)
1579	pdmR3ResetDev(pDevIns, &Async);
1580
1581	if (Async.cAsync == cAsyncStart)
1582	for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext)
1583	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown)
1584	if (!pdmR3ResetDrv(pDrvIns, &Async, pDevIns->pReg->szName, pDevIns->iInstance, pLun->iLun))
1585	break;
1586
1587	if ( Async.cAsync == cAsyncStart
1588	&& !(pDevIns->pReg->fFlags & PDM_DEVREG_FLAGS_FIRST_RESET_NOTIFICATION))
1589	pdmR3ResetDev(pDevIns, &Async);
1590	}
1591
1592	#ifdef VBOX_WITH_USB
1593	for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext)
1594	{
1595	unsigned const cAsyncStart = Async.cAsync;
1596
1597	for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun; pLun = pLun->pNext)
1598	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown)
1599	if (!pdmR3ResetDrv(pDrvIns, &Async, pUsbIns->pReg->szName, pUsbIns->iInstance, pLun->iLun))
1600	break;
1601
1602	if (Async.cAsync == cAsyncStart)
1603	pdmR3ResetUsb(pUsbIns, &Async);
1604	}
1605	#endif
1606	if (!Async.cAsync)
1607	break;
1608	pdmR3NotifyAsyncLog(&Async);
1609	pdmR3NotifyAsyncWaitAndProcessRequests(&Async, pVM);
1610	}
1611
1612	/*
1613	* Clear all pending interrupts and DMA operations.
1614	*/
1615	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
1616	PDMR3ResetCpu(&pVM->aCpus[idCpu]);
1617	VM_FF_CLEAR(pVM, VM_FF_PDM_DMA);
1618
1619	LogFlow(("PDMR3Reset: returns void\n"));
1620	}
1621
1622
1623	/**
1624	* This function will tell all the devices to setup up their memory structures
1625	* after VM construction and after VM reset.
1626	*
1627	* @param pVM The cross context VM structure.
1628	* @param fAtReset Indicates the context, after reset if @c true or after
1629	* construction if @c false.
1630	*/
1631	VMMR3_INT_DECL(void) PDMR3MemSetup(PVM pVM, bool fAtReset)
1632	{
1633	LogFlow(("PDMR3MemSetup: fAtReset=%RTbool\n", fAtReset));
1634	PDMDEVMEMSETUPCTX const enmCtx = fAtReset ? PDMDEVMEMSETUPCTX_AFTER_RESET : PDMDEVMEMSETUPCTX_AFTER_CONSTRUCTION;
1635
1636	/*
1637	* Iterate thru the device instances and work the callback.
1638	*/
1639	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
1640	if (pDevIns->pReg->pfnMemSetup)
1641	{
1642	PDMCritSectEnter(pDevIns->pCritSectRoR3, VERR_IGNORED);
1643	pDevIns->pReg->pfnMemSetup(pDevIns, enmCtx);
1644	PDMCritSectLeave(pDevIns->pCritSectRoR3);
1645	}
1646
1647	LogFlow(("PDMR3MemSetup: returns void\n"));
1648	}
1649
1650
1651	/**
1652	* Retrieves and resets the info left behind by PDMDevHlpVMReset.
1653	*
1654	* @returns True if hard reset, false if soft reset.
1655	* @param pVM The cross context VM structure.
1656	* @param fOverride If non-zero, the override flags will be used instead
1657	* of the reset flags kept by PDM. (For triple faults.)
1658	* @param pfResetFlags Where to return the reset flags (PDMVMRESET_F_XXX).
1659	* @thread EMT
1660	*/
1661	VMMR3_INT_DECL(bool) PDMR3GetResetInfo(PVM pVM, uint32_t fOverride, uint32_t *pfResetFlags)
1662	{
1663	VM_ASSERT_EMT(pVM);
1664
1665	/*
1666	* Get the reset flags.
1667	*/
1668	uint32_t fResetFlags;
1669	fResetFlags = ASMAtomicXchgU32(&pVM->pdm.s.fResetFlags, 0);
1670	if (fOverride)
1671	fResetFlags = fOverride;
1672	*pfResetFlags = fResetFlags;
1673
1674	/*
1675	* To try avoid trouble, we never ever do soft/warm resets on SMP systems
1676	* with more than CPU #0 active. However, if only one CPU is active we
1677	* will ask the firmware what it wants us to do (because the firmware may
1678	* depend on the VMM doing a lot of what is normally its responsibility,
1679	* like clearing memory).
1680	*/
1681	bool fOtherCpusActive = false;
1682	VMCPUID iCpu = pVM->cCpus;
1683	while (iCpu-- > 1)
1684	{
1685	EMSTATE enmState = EMGetState(&pVM->aCpus[iCpu]);
1686	if ( enmState != EMSTATE_WAIT_SIPI
1687	&& enmState != EMSTATE_NONE)
1688	{
1689	fOtherCpusActive = true;
1690	break;
1691	}
1692	}
1693
1694	bool fHardReset = fOtherCpusActive
1695	\|\| (fResetFlags & PDMVMRESET_F_SRC_MASK) < PDMVMRESET_F_LAST_ALWAYS_HARD
1696	\|\| !pVM->pdm.s.pFirmware
1697	\|\| pVM->pdm.s.pFirmware->Reg.pfnIsHardReset(pVM->pdm.s.pFirmware->pDevIns, fResetFlags);
1698
1699	Log(("PDMR3GetResetInfo: returns fHardReset=%RTbool fResetFlags=%#x\n", fHardReset, fResetFlags));
1700	return fHardReset;
1701	}
1702
1703
1704	/**
1705	* Performs a soft reset of devices.
1706	*
1707	* @param pVM The cross context VM structure.
1708	* @param fResetFlags PDMVMRESET_F_XXX.
1709	*/
1710	VMMR3_INT_DECL(void) PDMR3SoftReset(PVM pVM, uint32_t fResetFlags)
1711	{
1712	LogFlow(("PDMR3SoftReset: fResetFlags=%#x\n", fResetFlags));
1713
1714	/*
1715	* Iterate thru the device instances and work the callback.
1716	*/
1717	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
1718	if (pDevIns->pReg->pfnSoftReset)
1719	{
1720	PDMCritSectEnter(pDevIns->pCritSectRoR3, VERR_IGNORED);
1721	pDevIns->pReg->pfnSoftReset(pDevIns, fResetFlags);
1722	PDMCritSectLeave(pDevIns->pCritSectRoR3);
1723	}
1724
1725	LogFlow(("PDMR3SoftReset: returns void\n"));
1726	}
1727
1728
1729	/**
1730	* Worker for PDMR3Suspend that deals with one driver.
1731	*
1732	* @param pDrvIns The driver instance.
1733	* @param pAsync The structure for recording asynchronous
1734	* notification tasks.
1735	* @param pszDevName The parent device name.
1736	* @param iDevInstance The parent device instance number.
1737	* @param iLun The parent LUN number.
1738	*/
1739	DECLINLINE(bool) pdmR3SuspendDrv(PPDMDRVINS pDrvIns, PPDMNOTIFYASYNCSTATS pAsync,
1740	const char *pszDevName, uint32_t iDevInstance, uint32_t iLun)
1741	{
1742	if (!pDrvIns->Internal.s.fVMSuspended)
1743	{
1744	pDrvIns->Internal.s.fVMSuspended = true;
1745	if (pDrvIns->pReg->pfnSuspend)
1746	{
1747	uint64_t cNsElapsed = RTTimeNanoTS();
1748
1749	if (!pDrvIns->Internal.s.pfnAsyncNotify)
1750	{
1751	LogFlow(("PDMR3Suspend: Notifying - driver '%s'/%d on LUN#%d of device '%s'/%d\n",
1752	pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance));
1753	pDrvIns->pReg->pfnSuspend(pDrvIns);
1754	if (pDrvIns->Internal.s.pfnAsyncNotify)
1755	LogFlow(("PDMR3Suspend: Async notification started - driver '%s'/%d on LUN#%d of device '%s'/%d\n",
1756	pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance));
1757	}
1758	else if (pDrvIns->Internal.s.pfnAsyncNotify(pDrvIns))
1759	{
1760	LogFlow(("PDMR3Suspend: Async notification completed - driver '%s'/%d on LUN#%d of device '%s'/%d\n",
1761	pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance));
1762	pDrvIns->Internal.s.pfnAsyncNotify = NULL;
1763	}
1764
1765	cNsElapsed = RTTimeNanoTS() - cNsElapsed;
1766	if (cNsElapsed >= PDMSUSPEND_WARN_AT_NS)
1767	LogRel(("PDMR3Suspend: Driver '%s'/%d on LUN#%d of device '%s'/%d took %'llu ns to suspend\n",
1768	pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance, cNsElapsed));
1769
1770	if (pDrvIns->Internal.s.pfnAsyncNotify)
1771	{
1772	pDrvIns->Internal.s.fVMSuspended = false;
1773	pdmR3NotifyAsyncAddDrv(pAsync, pDrvIns->Internal.s.pDrv->pReg->szName, pDrvIns->iInstance, pszDevName, iDevInstance, iLun);
1774	return false;
1775	}
1776	}
1777	}
1778	return true;
1779	}
1780
1781
1782	/**
1783	* Worker for PDMR3Suspend that deals with one USB device instance.
1784	*
1785	* @param pUsbIns The USB device instance.
1786	* @param pAsync The structure for recording asynchronous
1787	* notification tasks.
1788	*/
1789	DECLINLINE(void) pdmR3SuspendUsb(PPDMUSBINS pUsbIns, PPDMNOTIFYASYNCSTATS pAsync)
1790	{
1791	if (!pUsbIns->Internal.s.fVMSuspended)
1792	{
1793	pUsbIns->Internal.s.fVMSuspended = true;
1794	if (pUsbIns->pReg->pfnVMSuspend)
1795	{
1796	uint64_t cNsElapsed = RTTimeNanoTS();
1797
1798	if (!pUsbIns->Internal.s.pfnAsyncNotify)
1799	{
1800	LogFlow(("PDMR3Suspend: Notifying - USB device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance));
1801	pUsbIns->pReg->pfnVMSuspend(pUsbIns);
1802	if (pUsbIns->Internal.s.pfnAsyncNotify)
1803	LogFlow(("PDMR3Suspend: Async notification started - USB device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance));
1804	}
1805	else if (pUsbIns->Internal.s.pfnAsyncNotify(pUsbIns))
1806	{
1807	LogFlow(("PDMR3Suspend: Async notification completed - USB device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance));
1808	pUsbIns->Internal.s.pfnAsyncNotify = NULL;
1809	}
1810	if (pUsbIns->Internal.s.pfnAsyncNotify)
1811	{
1812	pUsbIns->Internal.s.fVMSuspended = false;
1813	pdmR3NotifyAsyncAdd(pAsync, pUsbIns->Internal.s.pUsbDev->pReg->szName, pUsbIns->iInstance);
1814	}
1815
1816	cNsElapsed = RTTimeNanoTS() - cNsElapsed;
1817	if (cNsElapsed >= PDMSUSPEND_WARN_AT_NS)
1818	LogRel(("PDMR3Suspend: USB device '%s'/%d took %'llu ns to suspend\n",
1819	pUsbIns->pReg->szName, pUsbIns->iInstance, cNsElapsed));
1820	}
1821	}
1822	}
1823
1824
1825	/**
1826	* Worker for PDMR3Suspend that deals with one device instance.
1827	*
1828	* @param pDevIns The device instance.
1829	* @param pAsync The structure for recording asynchronous
1830	* notification tasks.
1831	*/
1832	DECLINLINE(void) pdmR3SuspendDev(PPDMDEVINS pDevIns, PPDMNOTIFYASYNCSTATS pAsync)
1833	{
1834	if (!(pDevIns->Internal.s.fIntFlags & PDMDEVINSINT_FLAGS_SUSPENDED))
1835	{
1836	pDevIns->Internal.s.fIntFlags \|= PDMDEVINSINT_FLAGS_SUSPENDED;
1837	if (pDevIns->pReg->pfnSuspend)
1838	{
1839	uint64_t cNsElapsed = RTTimeNanoTS();
1840	PDMCritSectEnter(pDevIns->pCritSectRoR3, VERR_IGNORED);
1841
1842	if (!pDevIns->Internal.s.pfnAsyncNotify)
1843	{
1844	LogFlow(("PDMR3Suspend: Notifying - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance));
1845	pDevIns->pReg->pfnSuspend(pDevIns);
1846	if (pDevIns->Internal.s.pfnAsyncNotify)
1847	LogFlow(("PDMR3Suspend: Async notification started - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance));
1848	}
1849	else if (pDevIns->Internal.s.pfnAsyncNotify(pDevIns))
1850	{
1851	LogFlow(("PDMR3Suspend: Async notification completed - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance));
1852	pDevIns->Internal.s.pfnAsyncNotify = NULL;
1853	}
1854	if (pDevIns->Internal.s.pfnAsyncNotify)
1855	{
1856	pDevIns->Internal.s.fIntFlags &= ~PDMDEVINSINT_FLAGS_SUSPENDED;
1857	pdmR3NotifyAsyncAdd(pAsync, pDevIns->Internal.s.pDevR3->pReg->szName, pDevIns->iInstance);
1858	}
1859
1860	PDMCritSectLeave(pDevIns->pCritSectRoR3);
1861	cNsElapsed = RTTimeNanoTS() - cNsElapsed;
1862	if (cNsElapsed >= PDMSUSPEND_WARN_AT_NS)
1863	LogRel(("PDMR3Suspend: Device '%s'/%d took %'llu ns to suspend\n",
1864	pDevIns->pReg->szName, pDevIns->iInstance, cNsElapsed));
1865	}
1866	}
1867	}
1868
1869
1870	/**
1871	* This function will notify all the devices and their attached drivers about
1872	* the VM now being suspended.
1873	*
1874	* @param pVM The cross context VM structure.
1875	* @thread EMT(0)
1876	*/
1877	VMMR3_INT_DECL(void) PDMR3Suspend(PVM pVM)
1878	{
1879	LogFlow(("PDMR3Suspend:\n"));
1880	VM_ASSERT_EMT0(pVM);
1881	uint64_t cNsElapsed = RTTimeNanoTS();
1882
1883	/*
1884	* The outer loop repeats until there are no more async requests.
1885	*
1886	* Note! We depend on the suspended indicators to be in the desired state
1887	* and we do not reset them before starting because this allows
1888	* PDMR3PowerOn and PDMR3Resume to use PDMR3Suspend for cleaning up
1889	* on failure.
1890	*/
1891	PDMNOTIFYASYNCSTATS Async;
1892	pdmR3NotifyAsyncInit(&Async, "PDMR3Suspend");
1893	for (;;)
1894	{
1895	pdmR3NotifyAsyncBeginLoop(&Async);
1896
1897	/*
1898	* Iterate thru the device instances and USB device instances,
1899	* processing the drivers associated with those.
1900	*
1901	* The attached drivers are normally processed first. Some devices
1902	* (like DevAHCI) though needs to be notified before the drivers so
1903	* that it doesn't kick off any new requests after the drivers stopped
1904	* taking any. (DrvVD changes to read-only in this particular case.)
1905	*/
1906	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
1907	{
1908	unsigned const cAsyncStart = Async.cAsync;
1909
1910	if (pDevIns->pReg->fFlags & PDM_DEVREG_FLAGS_FIRST_SUSPEND_NOTIFICATION)
1911	pdmR3SuspendDev(pDevIns, &Async);
1912
1913	if (Async.cAsync == cAsyncStart)
1914	for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext)
1915	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown)
1916	if (!pdmR3SuspendDrv(pDrvIns, &Async, pDevIns->pReg->szName, pDevIns->iInstance, pLun->iLun))
1917	break;
1918
1919	if ( Async.cAsync == cAsyncStart
1920	&& !(pDevIns->pReg->fFlags & PDM_DEVREG_FLAGS_FIRST_SUSPEND_NOTIFICATION))
1921	pdmR3SuspendDev(pDevIns, &Async);
1922	}
1923
1924	#ifdef VBOX_WITH_USB
1925	for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext)
1926	{
1927	unsigned const cAsyncStart = Async.cAsync;
1928
1929	for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun; pLun = pLun->pNext)
1930	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown)
1931	if (!pdmR3SuspendDrv(pDrvIns, &Async, pUsbIns->pReg->szName, pUsbIns->iInstance, pLun->iLun))
1932	break;
1933
1934	if (Async.cAsync == cAsyncStart)
1935	pdmR3SuspendUsb(pUsbIns, &Async);
1936	}
1937	#endif
1938	if (!Async.cAsync)
1939	break;
1940	pdmR3NotifyAsyncLog(&Async);
1941	pdmR3NotifyAsyncWaitAndProcessRequests(&Async, pVM);
1942	}
1943
1944	/*
1945	* Suspend all threads.
1946	*/
1947	pdmR3ThreadSuspendAll(pVM);
1948
1949	cNsElapsed = RTTimeNanoTS() - cNsElapsed;
1950	LogRel(("PDMR3Suspend: %'llu ns run time\n", cNsElapsed));
1951	}
1952
1953
1954	/**
1955	* Worker for PDMR3Resume that deals with one driver.
1956	*
1957	* @param pDrvIns The driver instance.
1958	* @param pszDevName The parent device name.
1959	* @param iDevInstance The parent device instance number.
1960	* @param iLun The parent LUN number.
1961	*/
1962	DECLINLINE(int) pdmR3ResumeDrv(PPDMDRVINS pDrvIns, const char *pszDevName, uint32_t iDevInstance, uint32_t iLun)
1963	{
1964	Assert(pDrvIns->Internal.s.fVMSuspended);
1965	if (pDrvIns->pReg->pfnResume)
1966	{
1967	LogFlow(("PDMR3Resume: Notifying - driver '%s'/%d on LUN#%d of device '%s'/%d\n",
1968	pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance));
1969	int rc = VINF_SUCCESS; pDrvIns->pReg->pfnResume(pDrvIns);
1970	if (RT_FAILURE(rc))
1971	{
1972	LogRel(("PDMR3Resume: Driver '%s'/%d on LUN#%d of device '%s'/%d -> %Rrc\n",
1973	pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance, rc));
1974	return rc;
1975	}
1976	}
1977	pDrvIns->Internal.s.fVMSuspended = false;
1978	return VINF_SUCCESS;
1979	}
1980
1981
1982	/**
1983	* Worker for PDMR3Resume that deals with one USB device instance.
1984	*
1985	* @returns VBox status code.
1986	* @param pUsbIns The USB device instance.
1987	*/
1988	DECLINLINE(int) pdmR3ResumeUsb(PPDMUSBINS pUsbIns)
1989	{
1990	Assert(pUsbIns->Internal.s.fVMSuspended);
1991	if (pUsbIns->pReg->pfnVMResume)
1992	{
1993	LogFlow(("PDMR3Resume: Notifying - device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance));
1994	int rc = VINF_SUCCESS; pUsbIns->pReg->pfnVMResume(pUsbIns);
1995	if (RT_FAILURE(rc))
1996	{
1997	LogRel(("PDMR3Resume: Device '%s'/%d -> %Rrc\n", pUsbIns->pReg->szName, pUsbIns->iInstance, rc));
1998	return rc;
1999	}
2000	}
2001	pUsbIns->Internal.s.fVMSuspended = false;
2002	return VINF_SUCCESS;
2003	}
2004
2005
2006	/**
2007	* Worker for PDMR3Resume that deals with one device instance.
2008	*
2009	* @returns VBox status code.
2010	* @param pDevIns The device instance.
2011	*/
2012	DECLINLINE(int) pdmR3ResumeDev(PPDMDEVINS pDevIns)
2013	{
2014	Assert(pDevIns->Internal.s.fIntFlags & PDMDEVINSINT_FLAGS_SUSPENDED);
2015	if (pDevIns->pReg->pfnResume)
2016	{
2017	LogFlow(("PDMR3Resume: Notifying - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance));
2018	PDMCritSectEnter(pDevIns->pCritSectRoR3, VERR_IGNORED);
2019	int rc = VINF_SUCCESS; pDevIns->pReg->pfnResume(pDevIns);
2020	PDMCritSectLeave(pDevIns->pCritSectRoR3);
2021	if (RT_FAILURE(rc))
2022	{
2023	LogRel(("PDMR3Resume: Device '%s'/%d -> %Rrc\n", pDevIns->pReg->szName, pDevIns->iInstance, rc));
2024	return rc;
2025	}
2026	}
2027	pDevIns->Internal.s.fIntFlags &= ~PDMDEVINSINT_FLAGS_SUSPENDED;
2028	return VINF_SUCCESS;
2029	}
2030
2031
2032	/**
2033	* This function will notify all the devices and their
2034	* attached drivers about the VM now being resumed.
2035	*
2036	* @param pVM The cross context VM structure.
2037	*/
2038	VMMR3_INT_DECL(void) PDMR3Resume(PVM pVM)
2039	{
2040	LogFlow(("PDMR3Resume:\n"));
2041
2042	/*
2043	* Iterate thru the device instances and USB device instances,
2044	* processing the drivers associated with those.
2045	*/
2046	int rc = VINF_SUCCESS;
2047	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns && RT_SUCCESS(rc); pDevIns = pDevIns->Internal.s.pNextR3)
2048	{
2049	for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun && RT_SUCCESS(rc); pLun = pLun->pNext)
2050	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns && RT_SUCCESS(rc); pDrvIns = pDrvIns->Internal.s.pDown)
2051	rc = pdmR3ResumeDrv(pDrvIns, pDevIns->pReg->szName, pDevIns->iInstance, pLun->iLun);
2052	if (RT_SUCCESS(rc))
2053	rc = pdmR3ResumeDev(pDevIns);
2054	}
2055
2056	#ifdef VBOX_WITH_USB
2057	for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns && RT_SUCCESS(rc); pUsbIns = pUsbIns->Internal.s.pNext)
2058	{
2059	for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun && RT_SUCCESS(rc); pLun = pLun->pNext)
2060	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns && RT_SUCCESS(rc); pDrvIns = pDrvIns->Internal.s.pDown)
2061	rc = pdmR3ResumeDrv(pDrvIns, pUsbIns->pReg->szName, pUsbIns->iInstance, pLun->iLun);
2062	if (RT_SUCCESS(rc))
2063	rc = pdmR3ResumeUsb(pUsbIns);
2064	}
2065	#endif
2066
2067	/*
2068	* Resume all threads.
2069	*/
2070	if (RT_SUCCESS(rc))
2071	pdmR3ThreadResumeAll(pVM);
2072
2073	/*
2074	* Resume the block cache.
2075	*/
2076	if (RT_SUCCESS(rc))
2077	pdmR3BlkCacheResume(pVM);
2078
2079	/*
2080	* On failure, clean up via PDMR3Suspend.
2081	*/
2082	if (RT_FAILURE(rc))
2083	PDMR3Suspend(pVM);
2084
2085	LogFlow(("PDMR3Resume: returns %Rrc\n", rc));
2086	return /rc/;
2087	}
2088
2089
2090	/**
2091	* Worker for PDMR3PowerOff that deals with one driver.
2092	*
2093	* @param pDrvIns The driver instance.
2094	* @param pAsync The structure for recording asynchronous
2095	* notification tasks.
2096	* @param pszDevName The parent device name.
2097	* @param iDevInstance The parent device instance number.
2098	* @param iLun The parent LUN number.
2099	*/
2100	DECLINLINE(bool) pdmR3PowerOffDrv(PPDMDRVINS pDrvIns, PPDMNOTIFYASYNCSTATS pAsync,
2101	const char *pszDevName, uint32_t iDevInstance, uint32_t iLun)
2102	{
2103	if (!pDrvIns->Internal.s.fVMSuspended)
2104	{
2105	pDrvIns->Internal.s.fVMSuspended = true;
2106	if (pDrvIns->pReg->pfnPowerOff)
2107	{
2108	uint64_t cNsElapsed = RTTimeNanoTS();
2109
2110	if (!pDrvIns->Internal.s.pfnAsyncNotify)
2111	{
2112	LogFlow(("PDMR3PowerOff: Notifying - driver '%s'/%d on LUN#%d of device '%s'/%d\n",
2113	pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance));
2114	pDrvIns->pReg->pfnPowerOff(pDrvIns);
2115	if (pDrvIns->Internal.s.pfnAsyncNotify)
2116	LogFlow(("PDMR3PowerOff: Async notification started - driver '%s'/%d on LUN#%d of device '%s'/%d\n",
2117	pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance));
2118	}
2119	else if (pDrvIns->Internal.s.pfnAsyncNotify(pDrvIns))
2120	{
2121	LogFlow(("PDMR3PowerOff: Async notification completed - driver '%s'/%d on LUN#%d of device '%s'/%d\n",
2122	pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance));
2123	pDrvIns->Internal.s.pfnAsyncNotify = NULL;
2124	}
2125
2126	cNsElapsed = RTTimeNanoTS() - cNsElapsed;
2127	if (cNsElapsed >= PDMPOWEROFF_WARN_AT_NS)
2128	LogRel(("PDMR3PowerOff: Driver '%s'/%d on LUN#%d of device '%s'/%d took %'llu ns to power off\n",
2129	pDrvIns->pReg->szName, pDrvIns->iInstance, iLun, pszDevName, iDevInstance, cNsElapsed));
2130
2131	if (pDrvIns->Internal.s.pfnAsyncNotify)
2132	{
2133	pDrvIns->Internal.s.fVMSuspended = false;
2134	pdmR3NotifyAsyncAddDrv(pAsync, pDrvIns->Internal.s.pDrv->pReg->szName, pDrvIns->iInstance,
2135	pszDevName, iDevInstance, iLun);
2136	return false;
2137	}
2138	}
2139	}
2140	return true;
2141	}
2142
2143
2144	/**
2145	* Worker for PDMR3PowerOff that deals with one USB device instance.
2146	*
2147	* @param pUsbIns The USB device instance.
2148	* @param pAsync The structure for recording asynchronous
2149	* notification tasks.
2150	*/
2151	DECLINLINE(void) pdmR3PowerOffUsb(PPDMUSBINS pUsbIns, PPDMNOTIFYASYNCSTATS pAsync)
2152	{
2153	if (!pUsbIns->Internal.s.fVMSuspended)
2154	{
2155	pUsbIns->Internal.s.fVMSuspended = true;
2156	if (pUsbIns->pReg->pfnVMPowerOff)
2157	{
2158	uint64_t cNsElapsed = RTTimeNanoTS();
2159
2160	if (!pUsbIns->Internal.s.pfnAsyncNotify)
2161	{
2162	LogFlow(("PDMR3PowerOff: Notifying - USB device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance));
2163	pUsbIns->pReg->pfnVMPowerOff(pUsbIns);
2164	if (pUsbIns->Internal.s.pfnAsyncNotify)
2165	LogFlow(("PDMR3PowerOff: Async notification started - USB device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance));
2166	}
2167	else if (pUsbIns->Internal.s.pfnAsyncNotify(pUsbIns))
2168	{
2169	LogFlow(("PDMR3PowerOff: Async notification completed - USB device '%s'/%d\n", pUsbIns->pReg->szName, pUsbIns->iInstance));
2170	pUsbIns->Internal.s.pfnAsyncNotify = NULL;
2171	}
2172	if (pUsbIns->Internal.s.pfnAsyncNotify)
2173	{
2174	pUsbIns->Internal.s.fVMSuspended = false;
2175	pdmR3NotifyAsyncAdd(pAsync, pUsbIns->Internal.s.pUsbDev->pReg->szName, pUsbIns->iInstance);
2176	}
2177
2178	cNsElapsed = RTTimeNanoTS() - cNsElapsed;
2179	if (cNsElapsed >= PDMPOWEROFF_WARN_AT_NS)
2180	LogRel(("PDMR3PowerOff: USB device '%s'/%d took %'llu ns to power off\n",
2181	pUsbIns->pReg->szName, pUsbIns->iInstance, cNsElapsed));
2182
2183	}
2184	}
2185	}
2186
2187
2188	/**
2189	* Worker for PDMR3PowerOff that deals with one device instance.
2190	*
2191	* @param pDevIns The device instance.
2192	* @param pAsync The structure for recording asynchronous
2193	* notification tasks.
2194	*/
2195	DECLINLINE(void) pdmR3PowerOffDev(PPDMDEVINS pDevIns, PPDMNOTIFYASYNCSTATS pAsync)
2196	{
2197	if (!(pDevIns->Internal.s.fIntFlags & PDMDEVINSINT_FLAGS_SUSPENDED))
2198	{
2199	pDevIns->Internal.s.fIntFlags \|= PDMDEVINSINT_FLAGS_SUSPENDED;
2200	if (pDevIns->pReg->pfnPowerOff)
2201	{
2202	uint64_t cNsElapsed = RTTimeNanoTS();
2203	PDMCritSectEnter(pDevIns->pCritSectRoR3, VERR_IGNORED);
2204
2205	if (!pDevIns->Internal.s.pfnAsyncNotify)
2206	{
2207	LogFlow(("PDMR3PowerOff: Notifying - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance));
2208	pDevIns->pReg->pfnPowerOff(pDevIns);
2209	if (pDevIns->Internal.s.pfnAsyncNotify)
2210	LogFlow(("PDMR3PowerOff: Async notification started - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance));
2211	}
2212	else if (pDevIns->Internal.s.pfnAsyncNotify(pDevIns))
2213	{
2214	LogFlow(("PDMR3PowerOff: Async notification completed - device '%s'/%d\n", pDevIns->pReg->szName, pDevIns->iInstance));
2215	pDevIns->Internal.s.pfnAsyncNotify = NULL;
2216	}
2217	if (pDevIns->Internal.s.pfnAsyncNotify)
2218	{
2219	pDevIns->Internal.s.fIntFlags &= ~PDMDEVINSINT_FLAGS_SUSPENDED;
2220	pdmR3NotifyAsyncAdd(pAsync, pDevIns->Internal.s.pDevR3->pReg->szName, pDevIns->iInstance);
2221	}
2222
2223	PDMCritSectLeave(pDevIns->pCritSectRoR3);
2224	cNsElapsed = RTTimeNanoTS() - cNsElapsed;
2225	if (cNsElapsed >= PDMPOWEROFF_WARN_AT_NS)
2226	LogFlow(("PDMR3PowerOff: Device '%s'/%d took %'llu ns to power off\n",
2227	pDevIns->pReg->szName, pDevIns->iInstance, cNsElapsed));
2228	}
2229	}
2230	}
2231
2232
2233	/**
2234	* This function will notify all the devices and their
2235	* attached drivers about the VM being powered off.
2236	*
2237	* @param pVM The cross context VM structure.
2238	*/
2239	VMMR3DECL(void) PDMR3PowerOff(PVM pVM)
2240	{
2241	LogFlow(("PDMR3PowerOff:\n"));
2242	uint64_t cNsElapsed = RTTimeNanoTS();
2243
2244	/*
2245	* Clear the suspended flags on all devices and drivers first because they
2246	* might have been set during a suspend but the power off callbacks should
2247	* be called in any case.
2248	*/
2249	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
2250	{
2251	pDevIns->Internal.s.fIntFlags &= ~PDMDEVINSINT_FLAGS_SUSPENDED;
2252
2253	for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext)
2254	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown)
2255	pDrvIns->Internal.s.fVMSuspended = false;
2256	}
2257
2258	#ifdef VBOX_WITH_USB
2259	for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext)
2260	{
2261	pUsbIns->Internal.s.fVMSuspended = false;
2262
2263	for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun; pLun = pLun->pNext)
2264	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown)
2265	pDrvIns->Internal.s.fVMSuspended = false;
2266	}
2267	#endif
2268
2269	/*
2270	* The outer loop repeats until there are no more async requests.
2271	*/
2272	PDMNOTIFYASYNCSTATS Async;
2273	pdmR3NotifyAsyncInit(&Async, "PDMR3PowerOff");
2274	for (;;)
2275	{
2276	pdmR3NotifyAsyncBeginLoop(&Async);
2277
2278	/*
2279	* Iterate thru the device instances and USB device instances,
2280	* processing the drivers associated with those.
2281	*
2282	* The attached drivers are normally processed first. Some devices
2283	* (like DevAHCI) though needs to be notified before the drivers so
2284	* that it doesn't kick off any new requests after the drivers stopped
2285	* taking any. (DrvVD changes to read-only in this particular case.)
2286	*/
2287	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
2288	{
2289	unsigned const cAsyncStart = Async.cAsync;
2290
2291	if (pDevIns->pReg->fFlags & PDM_DEVREG_FLAGS_FIRST_POWEROFF_NOTIFICATION)
2292	pdmR3PowerOffDev(pDevIns, &Async);
2293
2294	if (Async.cAsync == cAsyncStart)
2295	for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext)
2296	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown)
2297	if (!pdmR3PowerOffDrv(pDrvIns, &Async, pDevIns->pReg->szName, pDevIns->iInstance, pLun->iLun))
2298	break;
2299
2300	if ( Async.cAsync == cAsyncStart
2301	&& !(pDevIns->pReg->fFlags & PDM_DEVREG_FLAGS_FIRST_POWEROFF_NOTIFICATION))
2302	pdmR3PowerOffDev(pDevIns, &Async);
2303	}
2304
2305	#ifdef VBOX_WITH_USB
2306	for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext)
2307	{
2308	unsigned const cAsyncStart = Async.cAsync;
2309
2310	for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun; pLun = pLun->pNext)
2311	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown)
2312	if (!pdmR3PowerOffDrv(pDrvIns, &Async, pUsbIns->pReg->szName, pUsbIns->iInstance, pLun->iLun))
2313	break;
2314
2315	if (Async.cAsync == cAsyncStart)
2316	pdmR3PowerOffUsb(pUsbIns, &Async);
2317	}
2318	#endif
2319	if (!Async.cAsync)
2320	break;
2321	pdmR3NotifyAsyncLog(&Async);
2322	pdmR3NotifyAsyncWaitAndProcessRequests(&Async, pVM);
2323	}
2324
2325	/*
2326	* Suspend all threads.
2327	*/
2328	pdmR3ThreadSuspendAll(pVM);
2329
2330	cNsElapsed = RTTimeNanoTS() - cNsElapsed;
2331	LogRel(("PDMR3PowerOff: %'llu ns run time\n", cNsElapsed));
2332	}
2333
2334
2335	/**
2336	* Queries the base interface of a device instance.
2337	*
2338	* The caller can use this to query other interfaces the device implements
2339	* and use them to talk to the device.
2340	*
2341	* @returns VBox status code.
2342	* @param pUVM The user mode VM handle.
2343	* @param pszDevice Device name.
2344	* @param iInstance Device instance.
2345	* @param ppBase Where to store the pointer to the base device interface on success.
2346	* @remark We're not doing any locking ATM, so don't try call this at times when the
2347	* device chain is known to be updated.
2348	*/
2349	VMMR3DECL(int) PDMR3QueryDevice(PUVM pUVM, const char pszDevice, unsigned iInstance, PPDMIBASE ppBase)
2350	{
2351	LogFlow(("PDMR3DeviceQuery: pszDevice=%p:{%s} iInstance=%u ppBase=%p\n", pszDevice, pszDevice, iInstance, ppBase));
2352	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2353	VM_ASSERT_VALID_EXT_RETURN(pUVM->pVM, VERR_INVALID_VM_HANDLE);
2354
2355	/*
2356	* Iterate registered devices looking for the device.
2357	*/
2358	size_t cchDevice = strlen(pszDevice);
2359	for (PPDMDEV pDev = pUVM->pVM->pdm.s.pDevs; pDev; pDev = pDev->pNext)
2360	{
2361	if ( pDev->cchName == cchDevice
2362	&& !memcmp(pDev->pReg->szName, pszDevice, cchDevice))
2363	{
2364	/*
2365	* Iterate device instances.
2366	*/
2367	for (PPDMDEVINS pDevIns = pDev->pInstances; pDevIns; pDevIns = pDevIns->Internal.s.pPerDeviceNextR3)
2368	{
2369	if (pDevIns->iInstance == iInstance)
2370	{
2371	if (pDevIns->IBase.pfnQueryInterface)
2372	{
2373	*ppBase = &pDevIns->IBase;
2374	LogFlow(("PDMR3DeviceQuery: return VINF_SUCCESS and ppBase=%p\n", ppBase));
2375	return VINF_SUCCESS;
2376	}
2377
2378	LogFlow(("PDMR3DeviceQuery: returns VERR_PDM_DEVICE_INSTANCE_NO_IBASE\n"));
2379	return VERR_PDM_DEVICE_INSTANCE_NO_IBASE;
2380	}
2381	}
2382
2383	LogFlow(("PDMR3DeviceQuery: returns VERR_PDM_DEVICE_INSTANCE_NOT_FOUND\n"));
2384	return VERR_PDM_DEVICE_INSTANCE_NOT_FOUND;
2385	}
2386	}
2387
2388	LogFlow(("PDMR3QueryDevice: returns VERR_PDM_DEVICE_NOT_FOUND\n"));
2389	return VERR_PDM_DEVICE_NOT_FOUND;
2390	}
2391
2392
2393	/**
2394	* Queries the base interface of a device LUN.
2395	*
2396	* This differs from PDMR3QueryLun by that it returns the interface on the
2397	* device and not the top level driver.
2398	*
2399	* @returns VBox status code.
2400	* @param pUVM The user mode VM handle.
2401	* @param pszDevice Device name.
2402	* @param iInstance Device instance.
2403	* @param iLun The Logical Unit to obtain the interface of.
2404	* @param ppBase Where to store the base interface pointer.
2405	* @remark We're not doing any locking ATM, so don't try call this at times when the
2406	* device chain is known to be updated.
2407	*/
2408	VMMR3DECL(int) PDMR3QueryDeviceLun(PUVM pUVM, const char pszDevice, unsigned iInstance, unsigned iLun, PPDMIBASE ppBase)
2409	{
2410	LogFlow(("PDMR3QueryDeviceLun: pszDevice=%p:{%s} iInstance=%u iLun=%u ppBase=%p\n",
2411	pszDevice, pszDevice, iInstance, iLun, ppBase));
2412	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2413	VM_ASSERT_VALID_EXT_RETURN(pUVM->pVM, VERR_INVALID_VM_HANDLE);
2414
2415	/*
2416	* Find the LUN.
2417	*/
2418	PPDMLUN pLun;
2419	int rc = pdmR3DevFindLun(pUVM->pVM, pszDevice, iInstance, iLun, &pLun);
2420	if (RT_SUCCESS(rc))
2421	{
2422	*ppBase = pLun->pBase;
2423	LogFlow(("PDMR3QueryDeviceLun: return VINF_SUCCESS and ppBase=%p\n", ppBase));
2424	return VINF_SUCCESS;
2425	}
2426	LogFlow(("PDMR3QueryDeviceLun: returns %Rrc\n", rc));
2427	return rc;
2428	}
2429
2430
2431	/**
2432	* Query the interface of the top level driver on a LUN.
2433	*
2434	* @returns VBox status code.
2435	* @param pUVM The user mode VM handle.
2436	* @param pszDevice Device name.
2437	* @param iInstance Device instance.
2438	* @param iLun The Logical Unit to obtain the interface of.
2439	* @param ppBase Where to store the base interface pointer.
2440	* @remark We're not doing any locking ATM, so don't try call this at times when the
2441	* device chain is known to be updated.
2442	*/
2443	VMMR3DECL(int) PDMR3QueryLun(PUVM pUVM, const char pszDevice, unsigned iInstance, unsigned iLun, PPDMIBASE ppBase)
2444	{
2445	LogFlow(("PDMR3QueryLun: pszDevice=%p:{%s} iInstance=%u iLun=%u ppBase=%p\n",
2446	pszDevice, pszDevice, iInstance, iLun, ppBase));
2447	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2448	PVM pVM = pUVM->pVM;
2449	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2450
2451	/*
2452	* Find the LUN.
2453	*/
2454	PPDMLUN pLun;
2455	int rc = pdmR3DevFindLun(pVM, pszDevice, iInstance, iLun, &pLun);
2456	if (RT_SUCCESS(rc))
2457	{
2458	if (pLun->pTop)
2459	{
2460	*ppBase = &pLun->pTop->IBase;
2461	LogFlow(("PDMR3QueryLun: return %Rrc and ppBase=%p\n", VINF_SUCCESS, ppBase));
2462	return VINF_SUCCESS;
2463	}
2464	rc = VERR_PDM_NO_DRIVER_ATTACHED_TO_LUN;
2465	}
2466	LogFlow(("PDMR3QueryLun: returns %Rrc\n", rc));
2467	return rc;
2468	}
2469
2470
2471	/**
2472	* Query the interface of a named driver on a LUN.
2473	*
2474	* If the driver appears more than once in the driver chain, the first instance
2475	* is returned.
2476	*
2477	* @returns VBox status code.
2478	* @param pUVM The user mode VM handle.
2479	* @param pszDevice Device name.
2480	* @param iInstance Device instance.
2481	* @param iLun The Logical Unit to obtain the interface of.
2482	* @param pszDriver The driver name.
2483	* @param ppBase Where to store the base interface pointer.
2484	*
2485	* @remark We're not doing any locking ATM, so don't try call this at times when the
2486	* device chain is known to be updated.
2487	*/
2488	VMMR3DECL(int) PDMR3QueryDriverOnLun(PUVM pUVM, const char pszDevice, unsigned iInstance, unsigned iLun, const char pszDriver, PPPDMIBASE ppBase)
2489	{
2490	LogFlow(("PDMR3QueryDriverOnLun: pszDevice=%p:{%s} iInstance=%u iLun=%u pszDriver=%p:{%s} ppBase=%p\n",
2491	pszDevice, pszDevice, iInstance, iLun, pszDriver, pszDriver, ppBase));
2492	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2493	VM_ASSERT_VALID_EXT_RETURN(pUVM->pVM, VERR_INVALID_VM_HANDLE);
2494
2495	/*
2496	* Find the LUN.
2497	*/
2498	PPDMLUN pLun;
2499	int rc = pdmR3DevFindLun(pUVM->pVM, pszDevice, iInstance, iLun, &pLun);
2500	if (RT_SUCCESS(rc))
2501	{
2502	if (pLun->pTop)
2503	{
2504	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown)
2505	if (!strcmp(pDrvIns->pReg->szName, pszDriver))
2506	{
2507	*ppBase = &pDrvIns->IBase;
2508	LogFlow(("PDMR3QueryDriverOnLun: return %Rrc and ppBase=%p\n", VINF_SUCCESS, ppBase));
2509	return VINF_SUCCESS;
2510
2511	}
2512	rc = VERR_PDM_DRIVER_NOT_FOUND;
2513	}
2514	else
2515	rc = VERR_PDM_NO_DRIVER_ATTACHED_TO_LUN;
2516	}
2517	LogFlow(("PDMR3QueryDriverOnLun: returns %Rrc\n", rc));
2518	return rc;
2519	}
2520
2521	/**
2522	* Executes pending DMA transfers.
2523	* Forced Action handler.
2524	*
2525	* @param pVM The cross context VM structure.
2526	*/
2527	VMMR3DECL(void) PDMR3DmaRun(PVM pVM)
2528	{
2529	/* Note! Not really SMP safe; restrict it to VCPU 0. */
2530	if (VMMGetCpuId(pVM) != 0)
2531	return;
2532
2533	if (VM_FF_TEST_AND_CLEAR(pVM, VM_FF_PDM_DMA))
2534	{
2535	if (pVM->pdm.s.pDmac)
2536	{
2537	bool fMore = pVM->pdm.s.pDmac->Reg.pfnRun(pVM->pdm.s.pDmac->pDevIns);
2538	if (fMore)
2539	VM_FF_SET(pVM, VM_FF_PDM_DMA);
2540	}
2541	}
2542	}
2543
2544
2545	/**
2546	* Service a VMMCALLRING3_PDM_LOCK call.
2547	*
2548	* @returns VBox status code.
2549	* @param pVM The cross context VM structure.
2550	*/
2551	VMMR3_INT_DECL(int) PDMR3LockCall(PVM pVM)
2552	{
2553	return PDMR3CritSectEnterEx(&pVM->pdm.s.CritSect, true /* fHostCall */);
2554	}
2555
2556
2557	/**
2558	* Allocates memory from the VMM device heap.
2559	*
2560	* @returns VBox status code.
2561	* @param pVM The cross context VM structure.
2562	* @param cbSize Allocation size.
2563	* @param pfnNotify Mapping/unmapping notification callback.
2564	* @param ppv Ring-3 pointer. (out)
2565	*/
2566	VMMR3_INT_DECL(int) PDMR3VmmDevHeapAlloc(PVM pVM, size_t cbSize, PFNPDMVMMDEVHEAPNOTIFY pfnNotify, RTR3PTR *ppv)
2567	{
2568	#ifdef DEBUG_bird
2569	if (!cbSize \|\| cbSize > pVM->pdm.s.cbVMMDevHeapLeft)
2570	return VERR_NO_MEMORY;
2571	#else
2572	AssertReturn(cbSize && cbSize <= pVM->pdm.s.cbVMMDevHeapLeft, VERR_NO_MEMORY);
2573	#endif
2574
2575	Log(("PDMR3VMMDevHeapAlloc: %#zx\n", cbSize));
2576
2577	/** @todo Not a real heap as there's currently only one user. */
2578	*ppv = pVM->pdm.s.pvVMMDevHeap;
2579	pVM->pdm.s.cbVMMDevHeapLeft = 0;
2580	pVM->pdm.s.pfnVMMDevHeapNotify = pfnNotify;
2581	return VINF_SUCCESS;
2582	}
2583
2584
2585	/**
2586	* Frees memory from the VMM device heap
2587	*
2588	* @returns VBox status code.
2589	* @param pVM The cross context VM structure.
2590	* @param pv Ring-3 pointer.
2591	*/
2592	VMMR3_INT_DECL(int) PDMR3VmmDevHeapFree(PVM pVM, RTR3PTR pv)
2593	{
2594	Log(("PDMR3VmmDevHeapFree: %RHv\n", pv)); RT_NOREF_PV(pv);
2595
2596	/** @todo not a real heap as there's currently only one user. */
2597	pVM->pdm.s.cbVMMDevHeapLeft = pVM->pdm.s.cbVMMDevHeap;
2598	pVM->pdm.s.pfnVMMDevHeapNotify = NULL;
2599	return VINF_SUCCESS;
2600	}
2601
2602
2603	/**
2604	* Worker for DBGFR3TraceConfig that checks if the given tracing group name
2605	* matches a device or driver name and applies the tracing config change.
2606	*
2607	* @returns VINF_SUCCESS or VERR_NOT_FOUND.
2608	* @param pVM The cross context VM structure.
2609	* @param pszName The tracing config group name. This is NULL if
2610	* the operation applies to every device and
2611	* driver.
2612	* @param cchName The length to match.
2613	* @param fEnable Whether to enable or disable the corresponding
2614	* trace points.
2615	* @param fApply Whether to actually apply the changes or just do
2616	* existence checks.
2617	*/
2618	VMMR3_INT_DECL(int) PDMR3TracingConfig(PVM pVM, const char *pszName, size_t cchName, bool fEnable, bool fApply)
2619	{
2620	/** @todo This code is potentially racing driver attaching and detaching. */
2621
2622	/*
2623	* Applies to all.
2624	*/
2625	if (pszName == NULL)
2626	{
2627	AssertReturn(fApply, VINF_SUCCESS);
2628
2629	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
2630	{
2631	pDevIns->fTracing = fEnable;
2632	for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext)
2633	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown)
2634	pDrvIns->fTracing = fEnable;
2635	}
2636
2637	#ifdef VBOX_WITH_USB
2638	for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext)
2639	{
2640	pUsbIns->fTracing = fEnable;
2641	for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun; pLun = pLun->pNext)
2642	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown)
2643	pDrvIns->fTracing = fEnable;
2644
2645	}
2646	#endif
2647	return VINF_SUCCESS;
2648	}
2649
2650	/*
2651	* Specific devices, USB devices or drivers.
2652	* Decode prefix to figure which of these it applies to.
2653	*/
2654	if (cchName <= 3)
2655	return VERR_NOT_FOUND;
2656
2657	uint32_t cMatches = 0;
2658	if (!strncmp("dev", pszName, 3))
2659	{
2660	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
2661	{
2662	const char *pszDevName = pDevIns->Internal.s.pDevR3->pReg->szName;
2663	size_t cchDevName = strlen(pszDevName);
2664	if ( ( cchDevName == cchName
2665	&& RTStrNICmp(pszName, pszDevName, cchDevName))
2666	\|\| ( cchDevName == cchName - 3
2667	&& RTStrNICmp(pszName + 3, pszDevName, cchDevName)) )
2668	{
2669	cMatches++;
2670	if (fApply)
2671	pDevIns->fTracing = fEnable;
2672	}
2673	}
2674	}
2675	else if (!strncmp("usb", pszName, 3))
2676	{
2677	for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext)
2678	{
2679	const char *pszUsbName = pUsbIns->Internal.s.pUsbDev->pReg->szName;
2680	size_t cchUsbName = strlen(pszUsbName);
2681	if ( ( cchUsbName == cchName
2682	&& RTStrNICmp(pszName, pszUsbName, cchUsbName))
2683	\|\| ( cchUsbName == cchName - 3
2684	&& RTStrNICmp(pszName + 3, pszUsbName, cchUsbName)) )
2685	{
2686	cMatches++;
2687	if (fApply)
2688	pUsbIns->fTracing = fEnable;
2689	}
2690	}
2691	}
2692	else if (!strncmp("drv", pszName, 3))
2693	{
2694	AssertReturn(fApply, VINF_SUCCESS);
2695
2696	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
2697	for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext)
2698	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown)
2699	{
2700	const char *pszDrvName = pDrvIns->Internal.s.pDrv->pReg->szName;
2701	size_t cchDrvName = strlen(pszDrvName);
2702	if ( ( cchDrvName == cchName
2703	&& RTStrNICmp(pszName, pszDrvName, cchDrvName))
2704	\|\| ( cchDrvName == cchName - 3
2705	&& RTStrNICmp(pszName + 3, pszDrvName, cchDrvName)) )
2706	{
2707	cMatches++;
2708	if (fApply)
2709	pDrvIns->fTracing = fEnable;
2710	}
2711	}
2712
2713	#ifdef VBOX_WITH_USB
2714	for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext)
2715	for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun; pLun = pLun->pNext)
2716	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown)
2717	{
2718	const char *pszDrvName = pDrvIns->Internal.s.pDrv->pReg->szName;
2719	size_t cchDrvName = strlen(pszDrvName);
2720	if ( ( cchDrvName == cchName
2721	&& RTStrNICmp(pszName, pszDrvName, cchDrvName))
2722	\|\| ( cchDrvName == cchName - 3
2723	&& RTStrNICmp(pszName + 3, pszDrvName, cchDrvName)) )
2724	{
2725	cMatches++;
2726	if (fApply)
2727	pDrvIns->fTracing = fEnable;
2728	}
2729	}
2730	#endif
2731	}
2732	else
2733	return VERR_NOT_FOUND;
2734
2735	return cMatches > 0 ? VINF_SUCCESS : VERR_NOT_FOUND;
2736	}
2737
2738
2739	/**
2740	* Worker for DBGFR3TraceQueryConfig that checks whether all drivers, devices,
2741	* and USB device have the same tracing settings.
2742	*
2743	* @returns true / false.
2744	* @param pVM The cross context VM structure.
2745	* @param fEnabled The tracing setting to check for.
2746	*/
2747	VMMR3_INT_DECL(bool) PDMR3TracingAreAll(PVM pVM, bool fEnabled)
2748	{
2749	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
2750	{
2751	if (pDevIns->fTracing != (uint32_t)fEnabled)
2752	return false;
2753
2754	for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext)
2755	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown)
2756	if (pDrvIns->fTracing != (uint32_t)fEnabled)
2757	return false;
2758	}
2759
2760	#ifdef VBOX_WITH_USB
2761	for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext)
2762	{
2763	if (pUsbIns->fTracing != (uint32_t)fEnabled)
2764	return false;
2765
2766	for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun; pLun = pLun->pNext)
2767	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown)
2768	if (pDrvIns->fTracing != (uint32_t)fEnabled)
2769	return false;
2770	}
2771	#endif
2772
2773	return true;
2774	}
2775
2776
2777	/**
2778	* Worker for PDMR3TracingQueryConfig that adds a prefixed name to the output
2779	* string.
2780	*
2781	* @returns VINF_SUCCESS or VERR_BUFFER_OVERFLOW
2782	* @param ppszDst The pointer to the output buffer pointer.
2783	* @param pcbDst The pointer to the output buffer size.
2784	* @param fSpace Whether to add a space before the name.
2785	* @param pszPrefix The name prefix.
2786	* @param pszName The name.
2787	*/
2788	static int pdmR3TracingAdd(char *ppszDst, size_t pcbDst, bool fSpace, const char pszPrefix, const char pszName)
2789	{
2790	size_t const cchPrefix = strlen(pszPrefix);
2791	if (!RTStrNICmp(pszPrefix, pszName, cchPrefix))
2792	pszName += cchPrefix;
2793	size_t const cchName = strlen(pszName);
2794
2795	size_t const cchThis = cchName + cchPrefix + fSpace;
2796	if (cchThis >= *pcbDst)
2797	return VERR_BUFFER_OVERFLOW;
2798	if (fSpace)
2799	{
2800	**ppszDst = ' ';
2801	memcpy(*ppszDst + 1, pszPrefix, cchPrefix);
2802	memcpy(*ppszDst + 1 + cchPrefix, pszName, cchName + 1);
2803	}
2804	else
2805	{
2806	memcpy(*ppszDst, pszPrefix, cchPrefix);
2807	memcpy(*ppszDst + cchPrefix, pszName, cchName + 1);
2808	}
2809	*ppszDst += cchThis;
2810	*pcbDst -= cchThis;
2811	return VINF_SUCCESS;
2812	}
2813
2814
2815	/**
2816	* Worker for DBGFR3TraceQueryConfig use when not everything is either enabled
2817	* or disabled.
2818	*
2819	* @returns VINF_SUCCESS or VERR_BUFFER_OVERFLOW
2820	* @param pVM The cross context VM structure.
2821	* @param pszConfig Where to store the config spec.
2822	* @param cbConfig The size of the output buffer.
2823	*/
2824	VMMR3_INT_DECL(int) PDMR3TracingQueryConfig(PVM pVM, char *pszConfig, size_t cbConfig)
2825	{
2826	int rc;
2827	char *pszDst = pszConfig;
2828	size_t cbDst = cbConfig;
2829
2830	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
2831	{
2832	if (pDevIns->fTracing)
2833	{
2834	rc = pdmR3TracingAdd(&pszDst, &cbDst, pszDst != pszConfig, "dev", pDevIns->Internal.s.pDevR3->pReg->szName);
2835	if (RT_FAILURE(rc))
2836	return rc;
2837	}
2838
2839	for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext)
2840	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown)
2841	if (pDrvIns->fTracing)
2842	{
2843	rc = pdmR3TracingAdd(&pszDst, &cbDst, pszDst != pszConfig, "drv", pDrvIns->Internal.s.pDrv->pReg->szName);
2844	if (RT_FAILURE(rc))
2845	return rc;
2846	}
2847	}
2848
2849	#ifdef VBOX_WITH_USB
2850	for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext)
2851	{
2852	if (pUsbIns->fTracing)
2853	{
2854	rc = pdmR3TracingAdd(&pszDst, &cbDst, pszDst != pszConfig, "usb", pUsbIns->Internal.s.pUsbDev->pReg->szName);
2855	if (RT_FAILURE(rc))
2856	return rc;
2857	}
2858
2859	for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun; pLun = pLun->pNext)
2860	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown)
2861	if (pDrvIns->fTracing)
2862	{
2863	rc = pdmR3TracingAdd(&pszDst, &cbDst, pszDst != pszConfig, "drv", pDrvIns->Internal.s.pDrv->pReg->szName);
2864	if (RT_FAILURE(rc))
2865	return rc;
2866	}
2867	}
2868	#endif
2869
2870	return VINF_SUCCESS;
2871	}
2872
2873
2874	/**
2875	* Checks that a PDMDRVREG::szName, PDMDEVREG::szName or PDMUSBREG::szName
2876	* field contains only a limited set of ASCII characters.
2877	*
2878	* @returns true / false.
2879	* @param pszName The name to validate.
2880	*/
2881	bool pdmR3IsValidName(const char *pszName)
2882	{
2883	char ch;
2884	while ( (ch = *pszName) != '\0'
2885	&& ( RT_C_IS_ALNUM(ch)
2886	\|\| ch == '-'
2887	\|\| ch == ' ' /** @todo disallow this! */
2888	\|\| ch == '_') )
2889	pszName++;
2890	return ch == '\0';
2891	}
2892
2893
2894	/**
2895	* Info handler for 'pdmtracingids'.
2896	*
2897	* @param pVM The cross context VM structure.
2898	* @param pHlp The output helpers.
2899	* @param pszArgs The optional user arguments.
2900	*
2901	* @remarks Can be called on most threads.
2902	*/
2903	static DECLCALLBACK(void) pdmR3InfoTracingIds(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
2904	{
2905	/*
2906	* Parse the argument (optional).
2907	*/
2908	if ( pszArgs
2909	&& *pszArgs
2910	&& strcmp(pszArgs, "all")
2911	&& strcmp(pszArgs, "devices")
2912	&& strcmp(pszArgs, "drivers")
2913	&& strcmp(pszArgs, "usb"))
2914	{
2915	pHlp->pfnPrintf(pHlp, "Unable to grok '%s'\n", pszArgs);
2916	return;
2917	}
2918	bool fAll = !pszArgs \|\| !*pszArgs \|\| !strcmp(pszArgs, "all");
2919	bool fDevices = fAll \|\| !strcmp(pszArgs, "devices");
2920	bool fUsbDevs = fAll \|\| !strcmp(pszArgs, "usb");
2921	bool fDrivers = fAll \|\| !strcmp(pszArgs, "drivers");
2922
2923	/*
2924	* Produce the requested output.
2925	*/
2926	/** @todo lock PDM lists! */
2927	/* devices */
2928	if (fDevices)
2929	{
2930	pHlp->pfnPrintf(pHlp, "Device tracing IDs:\n");
2931	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
2932	pHlp->pfnPrintf(pHlp, "%05u %s\n", pDevIns->idTracing, pDevIns->Internal.s.pDevR3->pReg->szName);
2933	}
2934
2935	/* USB devices */
2936	if (fUsbDevs)
2937	{
2938	pHlp->pfnPrintf(pHlp, "USB device tracing IDs:\n");
2939	for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext)
2940	pHlp->pfnPrintf(pHlp, "%05u %s\n", pUsbIns->idTracing, pUsbIns->Internal.s.pUsbDev->pReg->szName);
2941	}
2942
2943	/* Drivers */
2944	if (fDrivers)
2945	{
2946	pHlp->pfnPrintf(pHlp, "Driver tracing IDs:\n");
2947	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
2948	{
2949	for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext)
2950	{
2951	uint32_t iLevel = 0;
2952	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown, iLevel++)
2953	pHlp->pfnPrintf(pHlp, "%05u %s (level %u, lun %u, dev %s)\n",
2954	pDrvIns->idTracing, pDrvIns->Internal.s.pDrv->pReg->szName,
2955	iLevel, pLun->iLun, pDevIns->Internal.s.pDevR3->pReg->szName);
2956	}
2957	}
2958
2959	for (PPDMUSBINS pUsbIns = pVM->pdm.s.pUsbInstances; pUsbIns; pUsbIns = pUsbIns->Internal.s.pNext)
2960	{
2961	for (PPDMLUN pLun = pUsbIns->Internal.s.pLuns; pLun; pLun = pLun->pNext)
2962	{
2963	uint32_t iLevel = 0;
2964	for (PPDMDRVINS pDrvIns = pLun->pTop; pDrvIns; pDrvIns = pDrvIns->Internal.s.pDown, iLevel++)
2965	pHlp->pfnPrintf(pHlp, "%05u %s (level %u, lun %u, dev %s)\n",
2966	pDrvIns->idTracing, pDrvIns->Internal.s.pDrv->pReg->szName,
2967	iLevel, pLun->iLun, pUsbIns->Internal.s.pUsbDev->pReg->szName);
2968	}
2969	}
2970	}
2971	}
2972

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source: vbox/trunk/src/VBox/VMM/VMMR3/PDM.cpp@ 78126

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