VBoxGuest-win.cpp@ 58106

Last change on this file since 58106 was 58089, checked in by vboxsync, 9 years ago
VBoxGuest,VBoxService,Doxyfile.Core: fixes.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 51.8 KB

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1	/* $Id: VBoxGuest-win.cpp 58089 2015-10-07 12:33:00Z vboxsync $ */
2	/** @file
3	* VBoxGuest - Windows specifics.
4	*/
5
6	/*
7	* Copyright (C) 2010-2015 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	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_SUP_DRV
23	#include "VBoxGuest-win.h"
24	#include "VBoxGuestInternal.h"
25
26	#include <iprt/asm.h>
27	#include <iprt/asm-amd64-x86.h>
28
29	#include <VBox/log.h>
30	#include <VBox/VBoxGuestLib.h>
31	#include <iprt/string.h>
32
33	/*
34	* XP DDK #defines ExFreePool to ExFreePoolWithTag. The latter does not exist
35	* on NT4, so... The same for ExAllocatePool.
36	*/
37	#ifdef TARGET_NT4
38	# undef ExAllocatePool
39	# undef ExFreePool
40	#endif
41
42
43	/*********************************************************************************************************************************
44	* Internal Functions *
45	*********************************************************************************************************************************/
46	RT_C_DECLS_BEGIN
47	static NTSTATUS vbgdNtAddDevice(PDRIVER_OBJECT pDrvObj, PDEVICE_OBJECT pDevObj);
48	static void vbgdNtUnload(PDRIVER_OBJECT pDrvObj);
49	static NTSTATUS vbgdNtCreate(PDEVICE_OBJECT pDevObj, PIRP pIrp);
50	static NTSTATUS vbgdNtClose(PDEVICE_OBJECT pDevObj, PIRP pIrp);
51	static NTSTATUS vbgdNtIOCtl(PDEVICE_OBJECT pDevObj, PIRP pIrp);
52	static NTSTATUS vbgdNtInternalIOCtl(PDEVICE_OBJECT pDevObj, PIRP pIrp);
53	static NTSTATUS vbgdNtRegistryReadDWORD(ULONG ulRoot, PCWSTR pwszPath, PWSTR pwszName, PULONG puValue);
54	static NTSTATUS vbgdNtSystemControl(PDEVICE_OBJECT pDevObj, PIRP pIrp);
55	static NTSTATUS vbgdNtShutdown(PDEVICE_OBJECT pDevObj, PIRP pIrp);
56	static NTSTATUS vbgdNtNotSupportedStub(PDEVICE_OBJECT pDevObj, PIRP pIrp);
57	#ifdef DEBUG
58	static void vbgdNtDoTests(void);
59	#endif
60	RT_C_DECLS_END
61
62
63	/*********************************************************************************************************************************
64	* Exported Functions *
65	*********************************************************************************************************************************/
66	RT_C_DECLS_BEGIN
67	ULONG DriverEntry(PDRIVER_OBJECT pDrvObj, PUNICODE_STRING pRegPath);
68	RT_C_DECLS_END
69
70	#ifdef ALLOC_PRAGMA
71	# pragma alloc_text(INIT, DriverEntry)
72	# pragma alloc_text(PAGE, vbgdNtAddDevice)
73	# pragma alloc_text(PAGE, vbgdNtUnload)
74	# pragma alloc_text(PAGE, vbgdNtCreate)
75	# pragma alloc_text(PAGE, vbgdNtClose)
76	# pragma alloc_text(PAGE, vbgdNtShutdown)
77	# pragma alloc_text(PAGE, vbgdNtNotSupportedStub)
78	# pragma alloc_text(PAGE, vbgdNtScanPCIResourceList)
79	#endif
80
81
82	/*********************************************************************************************************************************
83	* Global Variables *
84	*********************************************************************************************************************************/
85	/** The detected NT (windows) version. */
86	VBGDNTVER g_enmVbgdNtVer = VBGDNTVER_INVALID;
87
88
89
90	/**
91	* Driver entry point.
92	*
93	* @returns appropriate status code.
94	* @param pDrvObj Pointer to driver object.
95	* @param pRegPath Registry base path.
96	*/
97	ULONG DriverEntry(PDRIVER_OBJECT pDrvObj, PUNICODE_STRING pRegPath)
98	{
99	NTSTATUS rc = STATUS_SUCCESS;
100
101	LogFunc(("Driver built: %s %s\n", __DATE__, __TIME__));
102
103	/*
104	* Check if the the NT version is supported and initializing
105	* g_enmVbgdNtVer in the process.
106	*/
107	ULONG ulMajorVer;
108	ULONG ulMinorVer;
109	ULONG ulBuildNo;
110	BOOLEAN fCheckedBuild = PsGetVersion(&ulMajorVer, &ulMinorVer, &ulBuildNo, NULL);
111
112	/* Use RTLogBackdoorPrintf to make sure that this goes to VBox.log */
113	RTLogBackdoorPrintf("VBoxGuest: Windows version %u.%u, build %u\n", ulMajorVer, ulMinorVer, ulBuildNo);
114	if (fCheckedBuild)
115	RTLogBackdoorPrintf("VBoxGuest: Windows checked build\n");
116
117	#ifdef DEBUG
118	vbgdNtDoTests();
119	#endif
120	switch (ulMajorVer)
121	{
122	case 10:
123	switch (ulMinorVer)
124	{
125	case 0:
126	/* Windows 10 Preview builds starting with 9926. */
127	default:
128	/* Also everything newer. */
129	g_enmVbgdNtVer = VBGDNTVER_WIN10;
130	break;
131	}
132	break;
133	case 6: /* Windows Vista or Windows 7 (based on minor ver) */
134	switch (ulMinorVer)
135	{
136	case 0: /* Note: Also could be Windows 2008 Server! */
137	g_enmVbgdNtVer = VBGDNTVER_WINVISTA;
138	break;
139	case 1: /* Note: Also could be Windows 2008 Server R2! */
140	g_enmVbgdNtVer = VBGDNTVER_WIN7;
141	break;
142	case 2:
143	g_enmVbgdNtVer = VBGDNTVER_WIN8;
144	break;
145	case 3:
146	g_enmVbgdNtVer = VBGDNTVER_WIN81;
147	break;
148	case 4:
149	/* Windows 10 Preview builds. */
150	default:
151	/* Also everything newer. */
152	g_enmVbgdNtVer = VBGDNTVER_WIN10;
153	break;
154	}
155	break;
156	case 5:
157	switch (ulMinorVer)
158	{
159	default:
160	case 2:
161	g_enmVbgdNtVer = VBGDNTVER_WIN2K3;
162	break;
163	case 1:
164	g_enmVbgdNtVer = VBGDNTVER_WINXP;
165	break;
166	case 0:
167	g_enmVbgdNtVer = VBGDNTVER_WIN2K;
168	break;
169	}
170	break;
171	case 4:
172	g_enmVbgdNtVer = VBGDNTVER_WINNT4;
173	break;
174	default:
175	if (ulMajorVer > 6)
176	{
177	/* "Windows 10 mode" for Windows 8.1+. */
178	g_enmVbgdNtVer = VBGDNTVER_WIN10;
179	}
180	else
181	{
182	if (ulMajorVer < 4)
183	LogRelFunc(("At least Windows NT4 required! (%u.%u)\n", ulMajorVer, ulMinorVer));
184	else
185	LogRelFunc(("Unknown version %u.%u!\n", ulMajorVer, ulMinorVer));
186	rc = STATUS_DRIVER_UNABLE_TO_LOAD;
187	}
188	break;
189	}
190
191	if (NT_SUCCESS(rc))
192	{
193	/*
194	* Setup the driver entry points in pDrvObj.
195	*/
196	pDrvObj->DriverUnload = vbgdNtUnload;
197	pDrvObj->MajorFunction[IRP_MJ_CREATE] = vbgdNtCreate;
198	pDrvObj->MajorFunction[IRP_MJ_CLOSE] = vbgdNtClose;
199	pDrvObj->MajorFunction[IRP_MJ_DEVICE_CONTROL] = vbgdNtIOCtl;
200	pDrvObj->MajorFunction[IRP_MJ_INTERNAL_DEVICE_CONTROL] = vbgdNtInternalIOCtl;
201	pDrvObj->MajorFunction[IRP_MJ_SHUTDOWN] = vbgdNtShutdown;
202	pDrvObj->MajorFunction[IRP_MJ_READ] = vbgdNtNotSupportedStub;
203	pDrvObj->MajorFunction[IRP_MJ_WRITE] = vbgdNtNotSupportedStub;
204	#ifdef TARGET_NT4
205	rc = vbgdNt4CreateDevice(pDrvObj, NULL /* pDevObj */, pRegPath);
206	#else
207	pDrvObj->MajorFunction[IRP_MJ_PNP] = vbgdNtPnP;
208	pDrvObj->MajorFunction[IRP_MJ_POWER] = vbgdNtPower;
209	pDrvObj->MajorFunction[IRP_MJ_SYSTEM_CONTROL] = vbgdNtSystemControl;
210	pDrvObj->DriverExtension->AddDevice = (PDRIVER_ADD_DEVICE)vbgdNtAddDevice;
211	#endif
212	}
213
214	LogFlowFunc(("Returning %#x\n", rc));
215	return rc;
216	}
217
218
219	#ifndef TARGET_NT4
220	/**
221	* Handle request from the Plug & Play subsystem.
222	*
223	* @returns NT status code
224	* @param pDrvObj Driver object
225	* @param pDevObj Device object
226	*/
227	static NTSTATUS vbgdNtAddDevice(PDRIVER_OBJECT pDrvObj, PDEVICE_OBJECT pDevObj)
228	{
229	NTSTATUS rc;
230	LogFlowFuncEnter();
231
232	/*
233	* Create device.
234	*/
235	UNICODE_STRING DevName;
236	RtlInitUnicodeString(&DevName, VBOXGUEST_DEVICE_NAME_NT);
237	PDEVICE_OBJECT pDeviceObject = NULL;
238	rc = IoCreateDevice(pDrvObj, sizeof(VBOXGUESTDEVEXTWIN), &DevName, FILE_DEVICE_UNKNOWN, 0, FALSE, &pDeviceObject);
239	if (NT_SUCCESS(rc))
240	{
241	/*
242	* Create symbolic link (DOS devices).
243	*/
244	UNICODE_STRING DosName;
245	RtlInitUnicodeString(&DosName, VBOXGUEST_DEVICE_NAME_DOS);
246	rc = IoCreateSymbolicLink(&DosName, &DevName);
247	if (NT_SUCCESS(rc))
248	{
249	/*
250	* Setup the device extension.
251	*/
252	PVBOXGUESTDEVEXTWIN pDevExt = (PVBOXGUESTDEVEXTWIN)pDeviceObject->DeviceExtension;
253	RT_ZERO(*pDevExt);
254
255	KeInitializeSpinLock(&pDevExt->MouseEventAccessLock);
256
257	pDevExt->pDeviceObject = pDeviceObject;
258	pDevExt->prevDevState = STOPPED;
259	pDevExt->devState = STOPPED;
260
261	pDevExt->pNextLowerDriver = IoAttachDeviceToDeviceStack(pDeviceObject, pDevObj);
262	if (pDevExt->pNextLowerDriver != NULL)
263	{
264	/*
265	* If we reached this point we're fine with the basic driver setup,
266	* so continue to init our own things.
267	*/
268	#ifdef VBOX_WITH_GUEST_BUGCHECK_DETECTION
269	vbgdNtBugCheckCallback(pDevExt); /* Ignore failure! */
270	#endif
271	if (NT_SUCCESS(rc))
272	{
273	/* VBoxGuestPower is pageable; ensure we are not called at elevated IRQL */
274	pDeviceObject->Flags \|= DO_POWER_PAGABLE;
275
276	/* Driver is ready now. */
277	pDeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
278	LogFlowFunc(("Returning with rc=0x%x (success)\n", rc));
279	return rc;
280	}
281
282	IoDetachDevice(pDevExt->pNextLowerDriver);
283	}
284	else
285	{
286	LogFunc(("IoAttachDeviceToDeviceStack did not give a nextLowerDriver!\n"));
287	rc = STATUS_DEVICE_NOT_CONNECTED;
288	}
289
290	/* bail out */
291	IoDeleteSymbolicLink(&DosName);
292	}
293	else
294	LogFunc(("IoCreateSymbolicLink failed with rc=%#x!\n", rc));
295	IoDeleteDevice(pDeviceObject);
296	}
297	else
298	LogFunc(("IoCreateDevice failed with rc=%#x!\n", rc));
299
300	LogFunc(("Returning with rc=0x%x\n", rc));
301	return rc;
302	}
303	#endif
304
305
306	/**
307	* Debug helper to dump a device resource list.
308	*
309	* @param pResourceList list of device resources.
310	*/
311	static void vbgdNtShowDeviceResources(PCM_PARTIAL_RESOURCE_LIST pResourceList)
312	{
313	#ifdef LOG_ENABLED
314	PCM_PARTIAL_RESOURCE_DESCRIPTOR pResource = pResourceList->PartialDescriptors;
315	ULONG cResources = pResourceList->Count;
316
317	for (ULONG i = 0; i < cResources; ++i, ++pResource)
318	{
319	ULONG uType = pResource->Type;
320	static char const * const s_apszName[] =
321	{
322	"CmResourceTypeNull",
323	"CmResourceTypePort",
324	"CmResourceTypeInterrupt",
325	"CmResourceTypeMemory",
326	"CmResourceTypeDma",
327	"CmResourceTypeDeviceSpecific",
328	"CmResourceTypeBusNumber",
329	"CmResourceTypeDevicePrivate",
330	"CmResourceTypeAssignedResource",
331	"CmResourceTypeSubAllocateFrom",
332	};
333
334	LogFunc(("Type=%s", uType < RT_ELEMENTS(s_apszName) ? s_apszName[uType] : "Unknown"));
335
336	switch (uType)
337	{
338	case CmResourceTypePort:
339	case CmResourceTypeMemory:
340	LogFunc(("Start %8X%8.8lX, length=%X\n",
341	pResource->u.Port.Start.HighPart, pResource->u.Port.Start.LowPart,
342	pResource->u.Port.Length));
343	break;
344
345	case CmResourceTypeInterrupt:
346	LogFunc(("Level=%X, vector=%X, affinity=%X\n",
347	pResource->u.Interrupt.Level, pResource->u.Interrupt.Vector,
348	pResource->u.Interrupt.Affinity));
349	break;
350
351	case CmResourceTypeDma:
352	LogFunc(("Channel %d, Port %X\n",
353	pResource->u.Dma.Channel, pResource->u.Dma.Port));
354	break;
355
356	default:
357	LogFunc(("\n"));
358	break;
359	}
360	}
361	#endif
362	}
363
364
365	/**
366	* Global initialisation stuff (PnP + NT4 legacy).
367	*
368	* @param pDevObj Device object.
369	* @param pIrp Request packet.
370	*/
371	#ifndef TARGET_NT4
372	NTSTATUS vbgdNtInit(PDEVICE_OBJECT pDevObj, PIRP pIrp)
373	#else
374	NTSTATUS vbgdNtInit(PDRIVER_OBJECT pDrvObj, PDEVICE_OBJECT pDevObj, PUNICODE_STRING pRegPath)
375	#endif
376	{
377	PVBOXGUESTDEVEXTWIN pDevExt = (PVBOXGUESTDEVEXTWIN)pDevObj->DeviceExtension;
378	#ifndef TARGET_NT4
379	PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
380	#endif
381
382	LogFlowFuncEnter();
383
384	int rc = STATUS_SUCCESS; /** @todo r=bird: s/rc/rcNt/ and s/int/NTSTATUS/. gee. */
385	#ifdef TARGET_NT4
386	/*
387	* Let's have a look at what our PCI adapter offers.
388	*/
389	LogFlowFunc(("Starting to scan PCI resources of VBoxGuest ...\n"));
390
391	/* Assign the PCI resources. */
392	PCM_RESOURCE_LIST pResourceList = NULL;
393	UNICODE_STRING classNameString;
394	RtlInitUnicodeString(&classNameString, L"VBoxGuestAdapter");
395	rc = HalAssignSlotResources(pRegPath, &classNameString,
396	pDrvObj, pDevObj,
397	PCIBus, pDevExt->busNumber, pDevExt->slotNumber,
398	&pResourceList);
399	if (pResourceList && pResourceList->Count > 0)
400	vbgdNtShowDeviceResources(&pResourceList->List[0].PartialResourceList);
401	if (NT_SUCCESS(rc))
402	rc = vbgdNtScanPCIResourceList(pResourceList, pDevExt);
403	#else
404	if (pStack->Parameters.StartDevice.AllocatedResources->Count > 0)
405	vbgdNtShowDeviceResources(&pStack->Parameters.StartDevice.AllocatedResources->List[0].PartialResourceList);
406	if (NT_SUCCESS(rc))
407	rc = vbgdNtScanPCIResourceList(pStack->Parameters.StartDevice.AllocatedResourcesTranslated, pDevExt);
408	#endif
409	if (NT_SUCCESS(rc))
410	{
411	/*
412	* Map physical address of VMMDev memory into MMIO region
413	* and init the common device extension bits.
414	*/
415	void *pvMMIOBase = NULL;
416	uint32_t cbMMIO = 0;
417	rc = vbgdNtMapVMMDevMemory(pDevExt,
418	pDevExt->vmmDevPhysMemoryAddress,
419	pDevExt->vmmDevPhysMemoryLength,
420	&pvMMIOBase,
421	&cbMMIO);
422	if (NT_SUCCESS(rc))
423	{
424	pDevExt->Core.pVMMDevMemory = (VMMDevMemory *)pvMMIOBase;
425
426	LogFunc(("pvMMIOBase=0x%p, pDevExt=0x%p, pDevExt->Core.pVMMDevMemory=0x%p\n",
427	pvMMIOBase, pDevExt, pDevExt ? pDevExt->Core.pVMMDevMemory : NULL));
428
429	int vrc = VGDrvCommonInitDevExt(&pDevExt->Core,
430	pDevExt->Core.IOPortBase,
431	pvMMIOBase, cbMMIO,
432	vbgdNtVersionToOSType(g_enmVbgdNtVer),
433	VMMDEV_EVENT_MOUSE_POSITION_CHANGED);
434	if (RT_FAILURE(vrc))
435	{
436	LogFunc(("Could not init device extension, rc=%Rrc\n", vrc));
437	rc = STATUS_DEVICE_CONFIGURATION_ERROR;
438	}
439	}
440	else
441	LogFunc(("Could not map physical address of VMMDev, rc=0x%x\n", rc));
442	}
443
444	if (NT_SUCCESS(rc))
445	{
446	int vrc = VbglGRAlloc((VMMDevRequestHeader **)&pDevExt->pPowerStateRequest,
447	sizeof(VMMDevPowerStateRequest), VMMDevReq_SetPowerStatus);
448	if (RT_FAILURE(vrc))
449	{
450	LogFunc(("Alloc for pPowerStateRequest failed, rc=%Rrc\n", vrc));
451	rc = STATUS_UNSUCCESSFUL;
452	}
453	}
454
455	if (NT_SUCCESS(rc))
456	{
457	/*
458	* Register DPC and ISR.
459	*/
460	LogFlowFunc(("Initializing DPC/ISR ...\n"));
461
462	IoInitializeDpcRequest(pDevExt->pDeviceObject, vbgdNtDpcHandler);
463	#ifdef TARGET_NT4
464	ULONG uInterruptVector;
465	KIRQL irqLevel;
466	/* Get an interrupt vector. */
467	/* Only proceed if the device provides an interrupt. */
468	if ( pDevExt->interruptLevel
469	\|\| pDevExt->interruptVector)
470	{
471	LogFlowFunc(("Getting interrupt vector (HAL): Bus=%u, IRQL=%u, Vector=%u\n",
472	pDevExt->busNumber, pDevExt->interruptLevel, pDevExt->interruptVector));
473
474	uInterruptVector = HalGetInterruptVector(PCIBus,
475	pDevExt->busNumber,
476	pDevExt->interruptLevel,
477	pDevExt->interruptVector,
478	&irqLevel,
479	&pDevExt->interruptAffinity);
480	LogFlowFunc(("HalGetInterruptVector returns vector=%u\n", uInterruptVector));
481	if (uInterruptVector == 0)
482	LogFunc(("No interrupt vector found!\n"));
483	}
484	else
485	LogFunc(("Device does not provide an interrupt!\n"));
486	#endif
487	if (pDevExt->interruptVector)
488	{
489	LogFlowFunc(("Connecting interrupt ...\n"));
490
491	rc = IoConnectInterrupt(&pDevExt->pInterruptObject, /* Out: interrupt object. */
492	(PKSERVICE_ROUTINE)vbgdNtIsrHandler, /* Our ISR handler. */
493	pDevExt, /* Device context. */
494	NULL, /* Optional spinlock. */
495	#ifdef TARGET_NT4
496	uInterruptVector, /* Interrupt vector. */
497	irqLevel, /* Interrupt level. */
498	irqLevel, /* Interrupt level. */
499	#else
500	pDevExt->interruptVector, /* Interrupt vector. */
501	(KIRQL)pDevExt->interruptLevel, /* Interrupt level. */
502	(KIRQL)pDevExt->interruptLevel, /* Interrupt level. */
503	#endif
504	pDevExt->interruptMode, /* LevelSensitive or Latched. */
505	TRUE, /* Shareable interrupt. */
506	pDevExt->interruptAffinity, /* CPU affinity. */
507	FALSE); /* Don't save FPU stack. */
508	if (NT_ERROR(rc))
509	LogFunc(("Could not connect interrupt, rc=0x%x\n", rc));
510	}
511	else
512	LogFunc(("No interrupt vector found!\n"));
513	}
514
515
516	#ifdef VBOX_WITH_HGCM
517	LogFunc(("Allocating kernel session data ...\n"));
518	int vrc = VGDrvCommonCreateKernelSession(&pDevExt->Core, &pDevExt->pKernelSession);
519	if (RT_FAILURE(vrc))
520	{
521	LogFunc(("Failed to allocated kernel session data, rc=%Rrc\n", rc));
522	rc = STATUS_UNSUCCESSFUL;
523	}
524	#endif
525
526	if (RT_SUCCESS(rc))
527	{
528	ULONG ulValue = 0;
529	NTSTATUS rcNt = vbgdNtRegistryReadDWORD(RTL_REGISTRY_SERVICES,
530	L"VBoxGuest", L"LoggingEnabled", &ulValue);
531	if (NT_SUCCESS(rcNt))
532	{
533	pDevExt->Core.fLoggingEnabled = ulValue >= 0xFF;
534	if (pDevExt->Core.fLoggingEnabled)
535	LogRelFunc(("Logging to host log enabled (0x%x)", ulValue));
536	}
537
538	/* Ready to rumble! */
539	LogRelFunc(("Device is ready!\n"));
540	VBOXGUEST_UPDATE_DEVSTATE(pDevExt, WORKING);
541	}
542	else
543	pDevExt->pInterruptObject = NULL;
544
545	/** @todo r=bird: The error cleanup here is completely missing. We'll leak a
546	* whole bunch of things... */
547
548	LogFunc(("Returned with rc=0x%x\n", rc));
549	return rc;
550	}
551
552
553	/**
554	* Cleans up hardware resources.
555	* Do not delete DevExt here.
556	*
557	* @param pDevObj Device object.
558	*/
559	NTSTATUS vbgdNtCleanup(PDEVICE_OBJECT pDevObj)
560	{
561	LogFlowFuncEnter();
562
563	PVBOXGUESTDEVEXTWIN pDevExt = (PVBOXGUESTDEVEXTWIN)pDevObj->DeviceExtension;
564	if (pDevExt)
565	{
566
567	#if 0 /* @todo: test & enable cleaning global session data */
568	#ifdef VBOX_WITH_HGCM
569	if (pDevExt->pKernelSession)
570	{
571	VbgdCommonCloseSession(pDevExt, pDevExt->pKernelSession);
572	pDevExt->pKernelSession = NULL;
573	}
574	#endif
575	#endif
576
577	if (pDevExt->pInterruptObject)
578	{
579	IoDisconnectInterrupt(pDevExt->pInterruptObject);
580	pDevExt->pInterruptObject = NULL;
581	}
582
583	/** @todo: cleanup the rest stuff */
584
585
586	#ifdef VBOX_WITH_GUEST_BUGCHECK_DETECTION
587	hlpDeregisterBugCheckCallback(pDevExt); /* ignore failure! */
588	#endif
589	/* According to MSDN we have to unmap previously mapped memory. */
590	vbgdNtUnmapVMMDevMemory(pDevExt);
591	}
592
593	return STATUS_SUCCESS;
594	}
595
596
597	/**
598	* Unload the driver.
599	*
600	* @param pDrvObj Driver object.
601	*/
602	static void vbgdNtUnload(PDRIVER_OBJECT pDrvObj)
603	{
604	LogFlowFuncEnter();
605
606	#ifdef TARGET_NT4
607	vbgdNtCleanup(pDrvObj->DeviceObject);
608
609	/* Destroy device extension and clean up everything else. */
610	if (pDrvObj->DeviceObject && pDrvObj->DeviceObject->DeviceExtension)
611	VGDrvCommonDeleteDevExt((PVBOXGUESTDEVEXT)pDrvObj->DeviceObject->DeviceExtension);
612
613	/*
614	* I don't think it's possible to unload a driver which processes have
615	* opened, at least we'll blindly assume that here.
616	*/
617	UNICODE_STRING DosName;
618	RtlInitUnicodeString(&DosName, VBOXGUEST_DEVICE_NAME_DOS);
619	NTSTATUS rc = IoDeleteSymbolicLink(&DosName);
620
621	IoDeleteDevice(pDrvObj->DeviceObject);
622	#else /* !TARGET_NT4 */
623	/* On a PnP driver this routine will be called after
624	* IRP_MN_REMOVE_DEVICE (where we already did the cleanup),
625	* so don't do anything here (yet). */
626	#endif /* !TARGET_NT4 */
627
628	LogFlowFunc(("Returning\n"));
629	}
630
631
632	/**
633	* Create (i.e. Open) file entry point.
634	*
635	* @param pDevObj Device object.
636	* @param pIrp Request packet.
637	*/
638	static NTSTATUS vbgdNtCreate(PDEVICE_OBJECT pDevObj, PIRP pIrp)
639	{
640	/** @todo AssertPtrReturn(pIrp); */
641	PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
642	/** @todo AssertPtrReturn(pStack); */
643	PFILE_OBJECT pFileObj = pStack->FileObject;
644	PVBOXGUESTDEVEXTWIN pDevExt = (PVBOXGUESTDEVEXTWIN)pDevObj->DeviceExtension;
645	NTSTATUS rc = STATUS_SUCCESS;
646
647	if (pDevExt->devState != WORKING)
648	{
649	LogFunc(("Device is not working currently, state=%d\n", pDevExt->devState));
650	rc = STATUS_UNSUCCESSFUL;
651	}
652	else if (pStack->Parameters.Create.Options & FILE_DIRECTORY_FILE)
653	{
654	/*
655	* We are not remotely similar to a directory...
656	* (But this is possible.)
657	*/
658	LogFlowFunc(("Uhm, we're not a directory!\n"));
659	rc = STATUS_NOT_A_DIRECTORY;
660	}
661	else
662	{
663	#ifdef VBOX_WITH_HGCM
664	if (pFileObj)
665	{
666	LogFlowFunc(("File object type=%d\n", pFileObj->Type));
667
668	int vrc;
669	PVBOXGUESTSESSION pSession;
670	if (pFileObj->Type == 5 /* File Object */)
671	{
672	/*
673	* Create a session object if we have a valid file object. This session object
674	* exists for every R3 process.
675	*/
676	vrc = VGDrvCommonCreateUserSession(&pDevExt->Core, &pSession);
677	}
678	else
679	{
680	/* ... otherwise we've been called from R0! */
681	vrc = VGDrvCommonCreateKernelSession(&pDevExt->Core, &pSession);
682	}
683	if (RT_SUCCESS(vrc))
684	pFileObj->FsContext = pSession;
685	}
686	#endif
687	}
688
689	/* Complete the request! */
690	pIrp->IoStatus.Information = 0;
691	pIrp->IoStatus.Status = rc;
692	IoCompleteRequest(pIrp, IO_NO_INCREMENT);
693
694	LogFlowFunc(("Returning rc=0x%x\n", rc));
695	return rc;
696	}
697
698
699	/**
700	* Close file entry point.
701	*
702	* @param pDevObj Device object.
703	* @param pIrp Request packet.
704	*/
705	static NTSTATUS vbgdNtClose(PDEVICE_OBJECT pDevObj, PIRP pIrp)
706	{
707	PVBOXGUESTDEVEXTWIN pDevExt = (PVBOXGUESTDEVEXTWIN)pDevObj->DeviceExtension;
708	PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
709	PFILE_OBJECT pFileObj = pStack->FileObject;
710
711	LogFlowFunc(("pDevExt=0x%p, pFileObj=0x%p, FsContext=0x%p\n",
712	pDevExt, pFileObj, pFileObj->FsContext));
713
714	#ifdef VBOX_WITH_HGCM
715	/* Close both, R0 and R3 sessions. */
716	PVBOXGUESTSESSION pSession = (PVBOXGUESTSESSION)pFileObj->FsContext;
717	if (pSession)
718	VGDrvCommonCloseSession(&pDevExt->Core, pSession);
719	#endif
720
721	pFileObj->FsContext = NULL;
722	pIrp->IoStatus.Information = 0;
723	pIrp->IoStatus.Status = STATUS_SUCCESS;
724	IoCompleteRequest(pIrp, IO_NO_INCREMENT);
725
726	return STATUS_SUCCESS;
727	}
728
729
730	/**
731	* Device I/O Control entry point.
732	*
733	* @param pDevObj Device object.
734	* @param pIrp Request packet.
735	*/
736	static NTSTATUS vbgdNtIOCtl(PDEVICE_OBJECT pDevObj, PIRP pIrp)
737	{
738	NTSTATUS Status = STATUS_SUCCESS;
739	PVBOXGUESTDEVEXTWIN pDevExt = (PVBOXGUESTDEVEXTWIN)pDevObj->DeviceExtension;
740	PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
741	unsigned int uCmd = (unsigned int)pStack->Parameters.DeviceIoControl.IoControlCode;
742
743	char pBuf = (char )pIrp->AssociatedIrp.SystemBuffer; /* All requests are buffered. */
744	size_t cbData = pStack->Parameters.DeviceIoControl.InputBufferLength;
745	size_t cbOut = 0;
746
747	/* Do we have a file object associated?*/
748	PFILE_OBJECT pFileObj = pStack->FileObject;
749	PVBOXGUESTSESSION pSession = NULL;
750	if (pFileObj) /* ... then we might have a session object as well! */
751	pSession = (PVBOXGUESTSESSION)pFileObj->FsContext;
752
753	LogFlowFunc(("uCmd=%u, pDevExt=0x%p, pSession=0x%p\n",
754	uCmd, pDevExt, pSession));
755
756	/* We don't have a session associated with the file object? So this seems
757	* to be a kernel call then. */
758	/** @todo r=bird: What on earth is this supposed to be? Each kernel session
759	* shall have its own context of course, no hacks, pleeease. */
760	if (pSession == NULL)
761	{
762	LogFunc(("XXX: BUGBUG: FIXME: Using ugly kernel session data hack ...\n"));
763	#ifdef DEBUG_andy
764	RTLogBackdoorPrintf("XXX: BUGBUG: FIXME: Using ugly kernel session data hack ... Please don't forget to fix this one, Andy!\n");
765	#endif
766	pSession = pDevExt->pKernelSession;
767	}
768
769	/* Verify that it's a buffered CTL. */
770	if ((pStack->Parameters.DeviceIoControl.IoControlCode & 0x3) == METHOD_BUFFERED)
771	{
772	/*
773	* Process the common IOCtls.
774	*/
775	size_t cbDataReturned;
776	int vrc = VGDrvCommonIoCtl(uCmd, &pDevExt->Core, pSession, pBuf, cbData, &cbDataReturned);
777
778	LogFlowFunc(("rc=%Rrc, pBuf=0x%p, cbData=%u, cbDataReturned=%u\n",
779	vrc, pBuf, cbData, cbDataReturned));
780
781	if (RT_SUCCESS(vrc))
782	{
783	if (RT_UNLIKELY( cbDataReturned > cbData
784	\|\| cbDataReturned > pStack->Parameters.DeviceIoControl.OutputBufferLength))
785	{
786	LogFunc(("Too much output data %u - expected %u!\n", cbDataReturned, cbData));
787	cbDataReturned = cbData;
788	Status = STATUS_BUFFER_TOO_SMALL;
789	}
790	if (cbDataReturned > 0)
791	cbOut = cbDataReturned;
792	}
793	else
794	{
795	if ( vrc == VERR_NOT_SUPPORTED
796	\|\| vrc == VERR_INVALID_PARAMETER)
797	Status = STATUS_INVALID_PARAMETER;
798	else if (vrc == VERR_OUT_OF_RANGE)
799	Status = STATUS_INVALID_BUFFER_SIZE;
800	else
801	Status = STATUS_UNSUCCESSFUL;
802	}
803	}
804	else
805	{
806	LogFunc(("Not buffered request (%#x) - not supported\n", pStack->Parameters.DeviceIoControl.IoControlCode));
807	Status = STATUS_NOT_SUPPORTED;
808	}
809
810	pIrp->IoStatus.Status = Status;
811	pIrp->IoStatus.Information = cbOut;
812
813	IoCompleteRequest(pIrp, IO_NO_INCREMENT);
814
815	//LogFlowFunc(("Returned cbOut=%d rc=%#x\n", cbOut, Status));
816	return Status;
817	}
818
819	/**
820	* Internal Device I/O Control entry point.
821	*
822	* @param pDevObj Device object.
823	* @param pIrp Request packet.
824	*/
825	static NTSTATUS vbgdNtInternalIOCtl(PDEVICE_OBJECT pDevObj, PIRP pIrp)
826	{
827	NTSTATUS Status = STATUS_SUCCESS;
828	PVBOXGUESTDEVEXTWIN pDevExt = (PVBOXGUESTDEVEXTWIN)pDevObj->DeviceExtension;
829	PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
830	unsigned int uCmd = (unsigned int)pStack->Parameters.DeviceIoControl.IoControlCode;
831	bool fProcessed = false;
832	unsigned Info = 0;
833
834	/*
835	* Override common behavior of some operations.
836	*/
837	/** @todo r=bird: Better to add dedicated worker functions for this! */
838	switch (uCmd)
839	{
840	case VBOXGUEST_IOCTL_SET_MOUSE_NOTIFY_CALLBACK:
841	{
842	PVOID pvBuf = pStack->Parameters.Others.Argument1;
843	size_t cbData = (size_t)pStack->Parameters.Others.Argument2;
844	fProcessed = true;
845	if (cbData != sizeof(VBoxGuestMouseSetNotifyCallback))
846	{
847	AssertFailed();
848	Status = STATUS_INVALID_PARAMETER;
849	break;
850	}
851
852	VBoxGuestMouseSetNotifyCallback pInfo = (VBoxGuestMouseSetNotifyCallback)pvBuf;
853
854	/* we need a lock here to avoid concurrency with the set event functionality */
855	KIRQL OldIrql;
856	KeAcquireSpinLock(&pDevExt->MouseEventAccessLock, &OldIrql);
857	pDevExt->Core.MouseNotifyCallback = *pInfo;
858	KeReleaseSpinLock(&pDevExt->MouseEventAccessLock, OldIrql);
859
860	Status = STATUS_SUCCESS;
861	break;
862	}
863
864	default:
865	break;
866	}
867	if (fProcessed)
868	{
869	pIrp->IoStatus.Status = Status;
870	pIrp->IoStatus.Information = Info;
871
872	IoCompleteRequest(pIrp, IO_NO_INCREMENT);
873	return Status;
874	}
875
876	/*
877	* No override, go to common code.
878	*/
879	return vbgdNtIOCtl(pDevObj, pIrp);
880	}
881
882
883	/**
884	* IRP_MJ_SYSTEM_CONTROL handler.
885	*
886	* @returns NT status code
887	* @param pDevObj Device object.
888	* @param pIrp IRP.
889	*/
890	NTSTATUS vbgdNtSystemControl(PDEVICE_OBJECT pDevObj, PIRP pIrp)
891	{
892	PVBOXGUESTDEVEXTWIN pDevExt = (PVBOXGUESTDEVEXTWIN)pDevObj->DeviceExtension;
893
894	LogFlowFuncEnter();
895
896	/* Always pass it on to the next driver. */
897	IoSkipCurrentIrpStackLocation(pIrp);
898
899	return IoCallDriver(pDevExt->pNextLowerDriver, pIrp);
900	}
901
902
903	/**
904	* IRP_MJ_SHUTDOWN handler.
905	*
906	* @returns NT status code
907	* @param pDevObj Device object.
908	* @param pIrp IRP.
909	*/
910	NTSTATUS vbgdNtShutdown(PDEVICE_OBJECT pDevObj, PIRP pIrp)
911	{
912	PVBOXGUESTDEVEXTWIN pDevExt = (PVBOXGUESTDEVEXTWIN)pDevObj->DeviceExtension;
913
914	LogFlowFuncEnter();
915
916	VMMDevPowerStateRequest *pReq = pDevExt->pPowerStateRequest;
917	if (pReq)
918	{
919	pReq->header.requestType = VMMDevReq_SetPowerStatus;
920	pReq->powerState = VMMDevPowerState_PowerOff;
921
922	int rc = VbglGRPerform(&pReq->header);
923	if (RT_FAILURE(rc))
924	LogFunc(("Error performing request to VMMDev, rc=%Rrc\n", rc));
925	}
926
927	return STATUS_SUCCESS;
928	}
929
930
931	/**
932	* Stub function for functions we don't implemented.
933	*
934	* @returns STATUS_NOT_SUPPORTED
935	* @param pDevObj Device object.
936	* @param pIrp IRP.
937	*/
938	NTSTATUS vbgdNtNotSupportedStub(PDEVICE_OBJECT pDevObj, PIRP pIrp)
939	{
940	LogFlowFuncEnter();
941
942	pIrp->IoStatus.Information = 0;
943	pIrp->IoStatus.Status = STATUS_NOT_SUPPORTED;
944	IoCompleteRequest(pIrp, IO_NO_INCREMENT);
945
946	return STATUS_NOT_SUPPORTED;
947	}
948
949
950	/**
951	* DPC handler.
952	*
953	* @param pDPC DPC descriptor.
954	* @param pDevObj Device object.
955	* @param pIrp Interrupt request packet.
956	* @param pContext Context specific pointer.
957	*/
958	void vbgdNtDpcHandler(PKDPC pDPC, PDEVICE_OBJECT pDevObj, PIRP pIrp, PVOID pContext)
959	{
960	PVBOXGUESTDEVEXTWIN pDevExt = (PVBOXGUESTDEVEXTWIN)pDevObj->DeviceExtension;
961	Log3Func(("pDevExt=0x%p\n", pDevExt));
962
963	/* Test & reset the counter. */
964	if (ASMAtomicXchgU32(&pDevExt->Core.u32MousePosChangedSeq, 0))
965	{
966	/* we need a lock here to avoid concurrency with the set event ioctl handler thread,
967	* i.e. to prevent the event from destroyed while we're using it */
968	Assert(KeGetCurrentIrql() == DISPATCH_LEVEL);
969	KeAcquireSpinLockAtDpcLevel(&pDevExt->MouseEventAccessLock);
970
971	if (pDevExt->Core.MouseNotifyCallback.pfnNotify)
972	pDevExt->Core.MouseNotifyCallback.pfnNotify(pDevExt->Core.MouseNotifyCallback.pvUser);
973
974	KeReleaseSpinLockFromDpcLevel(&pDevExt->MouseEventAccessLock);
975	}
976
977	/* Process the wake-up list we were asked by the scheduling a DPC
978	* in vbgdNtIsrHandler(). */
979	VGDrvCommonWaitDoWakeUps(&pDevExt->Core);
980	}
981
982
983	/**
984	* ISR handler.
985	*
986	* @return BOOLEAN Indicates whether the IRQ came from us (TRUE) or not (FALSE).
987	* @param pInterrupt Interrupt that was triggered.
988	* @param pServiceContext Context specific pointer.
989	*/
990	BOOLEAN vbgdNtIsrHandler(PKINTERRUPT pInterrupt, PVOID pServiceContext)
991	{
992	PVBOXGUESTDEVEXTWIN pDevExt = (PVBOXGUESTDEVEXTWIN)pServiceContext;
993	if (pDevExt == NULL)
994	return FALSE;
995
996	/Log3Func(("pDevExt=0x%p, pVMMDevMemory=0x%p\n", pDevExt, pDevExt ? pDevExt->pVMMDevMemory : NULL));/
997
998	/* Enter the common ISR routine and do the actual work. */
999	BOOLEAN fIRQTaken = VGDrvCommonISR(&pDevExt->Core);
1000
1001	/* If we need to wake up some events we do that in a DPC to make
1002	* sure we're called at the right IRQL. */
1003	if (fIRQTaken)
1004	{
1005	Log3Func(("IRQ was taken! pInterrupt=0x%p, pDevExt=0x%p\n", pInterrupt, pDevExt));
1006	if (ASMAtomicUoReadU32( &pDevExt->Core.u32MousePosChangedSeq)
1007	\|\| !RTListIsEmpty(&pDevExt->Core.WakeUpList))
1008	{
1009	Log3Func(("Requesting DPC ...\n"));
1010	IoRequestDpc(pDevExt->pDeviceObject, pDevExt->pCurrentIrp, NULL);
1011	}
1012	}
1013	return fIRQTaken;
1014	}
1015
1016
1017	/**
1018	* Overridden routine for mouse polling events.
1019	*
1020	* @param pDevExt Device extension structure.
1021	*/
1022	void VGDrvNativeISRMousePollEvent(PVBOXGUESTDEVEXT pDevExt)
1023	{
1024	NOREF(pDevExt);
1025	/* nothing to do here - i.e. since we can not KeSetEvent from ISR level,
1026	* we rely on the pDevExt->u32MousePosChangedSeq to be set to a non-zero value on a mouse event
1027	* and queue the DPC in our ISR routine in that case doing KeSetEvent from the DPC routine */
1028	}
1029
1030
1031	/**
1032	* Queries (gets) a DWORD value from the registry.
1033	*
1034	* @return NTSTATUS
1035	* @param ulRoot Relative path root. See RTL_REGISTRY_SERVICES or RTL_REGISTRY_ABSOLUTE.
1036	* @param pwszPath Path inside path root.
1037	* @param pwszName Actual value name to look up.
1038	* @param puValue On input this can specify the default value (if RTL_REGISTRY_OPTIONAL is
1039	* not specified in ulRoot), on output this will retrieve the looked up
1040	* registry value if found.
1041	*/
1042	NTSTATUS vbgdNtRegistryReadDWORD(ULONG ulRoot, PCWSTR pwszPath, PWSTR pwszName, PULONG puValue)
1043	{
1044	if (!pwszPath \|\| !pwszName \|\| !puValue)
1045	return STATUS_INVALID_PARAMETER;
1046
1047	ULONG ulDefault = *puValue;
1048
1049	RTL_QUERY_REGISTRY_TABLE tblQuery[2];
1050	RtlZeroMemory(tblQuery, sizeof(tblQuery));
1051	/** @todo Add RTL_QUERY_REGISTRY_TYPECHECK! */
1052	tblQuery[0].Flags = RTL_QUERY_REGISTRY_DIRECT;
1053	tblQuery[0].Name = pwszName;
1054	tblQuery[0].EntryContext = puValue;
1055	tblQuery[0].DefaultType = REG_DWORD;
1056	tblQuery[0].DefaultData = &ulDefault;
1057	tblQuery[0].DefaultLength = sizeof(ULONG);
1058
1059	return RtlQueryRegistryValues(ulRoot,
1060	pwszPath,
1061	&tblQuery[0],
1062	NULL /* Context */,
1063	NULL /* Environment */);
1064	}
1065
1066
1067	/**
1068	* Helper to scan the PCI resource list and remember stuff.
1069	*
1070	* @param pResList Resource list
1071	* @param pDevExt Device extension
1072	*/
1073	NTSTATUS vbgdNtScanPCIResourceList(PCM_RESOURCE_LIST pResList, PVBOXGUESTDEVEXTWIN pDevExt)
1074	{
1075	/* Enumerate the resource list. */
1076	LogFlowFunc(("Found %d resources\n",
1077	pResList->List->PartialResourceList.Count));
1078
1079	NTSTATUS rc = STATUS_SUCCESS;
1080	PCM_PARTIAL_RESOURCE_DESCRIPTOR pPartialData = NULL;
1081	ULONG rangeCount = 0;
1082	ULONG cMMIORange = 0;
1083	PVBOXGUESTWINBASEADDRESS pBaseAddress = pDevExt->pciBaseAddress;
1084	for (ULONG i = 0; i < pResList->List->PartialResourceList.Count; i++)
1085	{
1086	pPartialData = &pResList->List->PartialResourceList.PartialDescriptors[i];
1087	switch (pPartialData->Type)
1088	{
1089	case CmResourceTypePort:
1090	{
1091	/* Overflow protection. */
1092	if (rangeCount < PCI_TYPE0_ADDRESSES)
1093	{
1094	LogFlowFunc(("I/O range: Base=%08x:%08x, length=%08x\n",
1095	pPartialData->u.Port.Start.HighPart,
1096	pPartialData->u.Port.Start.LowPart,
1097	pPartialData->u.Port.Length));
1098
1099	/* Save the IO port base. */
1100	/** @todo Not so good.
1101	* Update/bird: What is not so good? That we just consider the last range? */
1102	pDevExt->Core.IOPortBase = (RTIOPORT)pPartialData->u.Port.Start.LowPart;
1103
1104	/* Save resource information. */
1105	pBaseAddress->RangeStart = pPartialData->u.Port.Start;
1106	pBaseAddress->RangeLength = pPartialData->u.Port.Length;
1107	pBaseAddress->RangeInMemory = FALSE;
1108	pBaseAddress->ResourceMapped = FALSE;
1109
1110	LogFunc(("I/O range for VMMDev found! Base=%08x:%08x, length=%08x\n",
1111	pPartialData->u.Port.Start.HighPart,
1112	pPartialData->u.Port.Start.LowPart,
1113	pPartialData->u.Port.Length));
1114
1115	/* Next item ... */
1116	rangeCount++; pBaseAddress++;
1117	}
1118	break;
1119	}
1120
1121	case CmResourceTypeInterrupt:
1122	{
1123	LogFunc(("Interrupt: Level=%x, vector=%x, mode=%x\n",
1124	pPartialData->u.Interrupt.Level,
1125	pPartialData->u.Interrupt.Vector,
1126	pPartialData->Flags));
1127
1128	/* Save information. */
1129	pDevExt->interruptLevel = pPartialData->u.Interrupt.Level;
1130	pDevExt->interruptVector = pPartialData->u.Interrupt.Vector;
1131	pDevExt->interruptAffinity = pPartialData->u.Interrupt.Affinity;
1132
1133	/* Check interrupt mode. */
1134	if (pPartialData->Flags & CM_RESOURCE_INTERRUPT_LATCHED)
1135	pDevExt->interruptMode = Latched;
1136	else
1137	pDevExt->interruptMode = LevelSensitive;
1138	break;
1139	}
1140
1141	case CmResourceTypeMemory:
1142	{
1143	/* Overflow protection. */
1144	if (rangeCount < PCI_TYPE0_ADDRESSES)
1145	{
1146	LogFlowFunc(("Memory range: Base=%08x:%08x, length=%08x\n",
1147	pPartialData->u.Memory.Start.HighPart,
1148	pPartialData->u.Memory.Start.LowPart,
1149	pPartialData->u.Memory.Length));
1150
1151	/* We only care about read/write memory. */
1152	/** @todo Reconsider memory type. */
1153	if ( cMMIORange == 0 /* Only care about the first MMIO range (!!!). */
1154	&& (pPartialData->Flags & VBOX_CM_PRE_VISTA_MASK) == CM_RESOURCE_MEMORY_READ_WRITE)
1155	{
1156	/* Save physical MMIO base + length for VMMDev. */
1157	pDevExt->vmmDevPhysMemoryAddress = pPartialData->u.Memory.Start;
1158	pDevExt->vmmDevPhysMemoryLength = (ULONG)pPartialData->u.Memory.Length;
1159
1160	/* Save resource information. */
1161	pBaseAddress->RangeStart = pPartialData->u.Memory.Start;
1162	pBaseAddress->RangeLength = pPartialData->u.Memory.Length;
1163	pBaseAddress->RangeInMemory = TRUE;
1164	pBaseAddress->ResourceMapped = FALSE;
1165
1166	LogFunc(("Memory range for VMMDev found! Base = %08x:%08x, Length = %08x\n",
1167	pPartialData->u.Memory.Start.HighPart,
1168	pPartialData->u.Memory.Start.LowPart,
1169	pPartialData->u.Memory.Length));
1170
1171	/* Next item ... */
1172	rangeCount++; pBaseAddress++; cMMIORange++;
1173	}
1174	else
1175	LogFunc(("Ignoring memory: Flags=%08x\n", pPartialData->Flags));
1176	}
1177	break;
1178	}
1179
1180	default:
1181	{
1182	LogFunc(("Unhandled resource found, type=%d\n", pPartialData->Type));
1183	break;
1184	}
1185	}
1186	}
1187
1188	/* Memorize the number of resources found. */
1189	pDevExt->pciAddressCount = rangeCount;
1190	return rc;
1191	}
1192
1193
1194	/**
1195	* Maps the I/O space from VMMDev to virtual kernel address space.
1196	*
1197	* @return NTSTATUS
1198	*
1199	* @param pDevExt The device extension.
1200	* @param PhysAddr Physical address to map.
1201	* @param cbToMap Number of bytes to map.
1202	* @param ppvMMIOBase Pointer of mapped I/O base.
1203	* @param pcbMMIO Length of mapped I/O base.
1204	*/
1205	NTSTATUS vbgdNtMapVMMDevMemory(PVBOXGUESTDEVEXTWIN pDevExt, PHYSICAL_ADDRESS PhysAddr, ULONG cbToMap,
1206	void *ppvMMIOBase, uint32_t pcbMMIO)
1207	{
1208	AssertPtrReturn(pDevExt, VERR_INVALID_POINTER);
1209	AssertPtrReturn(ppvMMIOBase, VERR_INVALID_POINTER);
1210	/* pcbMMIO is optional. */
1211
1212	NTSTATUS rc = STATUS_SUCCESS;
1213	if (PhysAddr.LowPart > 0) /* We're mapping below 4GB. */
1214	{
1215	VMMDevMemory pVMMDevMemory = (VMMDevMemory )MmMapIoSpace(PhysAddr, cbToMap, MmNonCached);
1216	LogFlowFunc(("pVMMDevMemory = 0x%x\n", pVMMDevMemory));
1217	if (pVMMDevMemory)
1218	{
1219	LogFunc(("VMMDevMemory: Version = 0x%x, Size = %d\n", pVMMDevMemory->u32Version, pVMMDevMemory->u32Size));
1220
1221	/* Check version of the structure; do we have the right memory version? */
1222	if (pVMMDevMemory->u32Version == VMMDEV_MEMORY_VERSION)
1223	{
1224	/* Save results. */
1225	*ppvMMIOBase = pVMMDevMemory;
1226	if (pcbMMIO) /* Optional. */
1227	*pcbMMIO = pVMMDevMemory->u32Size;
1228
1229	LogFlowFunc(("VMMDevMemory found and mapped! pvMMIOBase = 0x%p\n", *ppvMMIOBase));
1230	}
1231	else
1232	{
1233	/* Not our version, refuse operation and unmap the memory. */
1234	LogFunc(("Wrong version (%u), refusing operation!\n", pVMMDevMemory->u32Version));
1235
1236	vbgdNtUnmapVMMDevMemory(pDevExt);
1237	rc = STATUS_UNSUCCESSFUL;
1238	}
1239	}
1240	else
1241	rc = STATUS_UNSUCCESSFUL;
1242	}
1243	return rc;
1244	}
1245
1246
1247	/**
1248	* Unmaps the VMMDev I/O range from kernel space.
1249	*
1250	* @param pDevExt The device extension.
1251	*/
1252	void vbgdNtUnmapVMMDevMemory(PVBOXGUESTDEVEXTWIN pDevExt)
1253	{
1254	LogFlowFunc(("pVMMDevMemory = 0x%x\n", pDevExt->Core.pVMMDevMemory));
1255	if (pDevExt->Core.pVMMDevMemory)
1256	{
1257	MmUnmapIoSpace((void*)pDevExt->Core.pVMMDevMemory, pDevExt->vmmDevPhysMemoryLength);
1258	pDevExt->Core.pVMMDevMemory = NULL;
1259	}
1260
1261	pDevExt->vmmDevPhysMemoryAddress.QuadPart = 0;
1262	pDevExt->vmmDevPhysMemoryLength = 0;
1263	}
1264
1265
1266	VBOXOSTYPE vbgdNtVersionToOSType(VBGDNTVER enmNtVer)
1267	{
1268	VBOXOSTYPE enmOsType;
1269	switch (enmNtVer)
1270	{
1271	case VBGDNTVER_WINNT4:
1272	enmOsType = VBOXOSTYPE_WinNT4;
1273	break;
1274
1275	case VBGDNTVER_WIN2K:
1276	enmOsType = VBOXOSTYPE_Win2k;
1277	break;
1278
1279	case VBGDNTVER_WINXP:
1280	#if ARCH_BITS == 64
1281	enmOsType = VBOXOSTYPE_WinXP_x64;
1282	#else
1283	enmOsType = VBOXOSTYPE_WinXP;
1284	#endif
1285	break;
1286
1287	case VBGDNTVER_WIN2K3:
1288	#if ARCH_BITS == 64
1289	enmOsType = VBOXOSTYPE_Win2k3_x64;
1290	#else
1291	enmOsType = VBOXOSTYPE_Win2k3;
1292	#endif
1293	break;
1294
1295	case VBGDNTVER_WINVISTA:
1296	#if ARCH_BITS == 64
1297	enmOsType = VBOXOSTYPE_WinVista_x64;
1298	#else
1299	enmOsType = VBOXOSTYPE_WinVista;
1300	#endif
1301	break;
1302
1303	case VBGDNTVER_WIN7:
1304	#if ARCH_BITS == 64
1305	enmOsType = VBOXOSTYPE_Win7_x64;
1306	#else
1307	enmOsType = VBOXOSTYPE_Win7;
1308	#endif
1309	break;
1310
1311	case VBGDNTVER_WIN8:
1312	#if ARCH_BITS == 64
1313	enmOsType = VBOXOSTYPE_Win8_x64;
1314	#else
1315	enmOsType = VBOXOSTYPE_Win8;
1316	#endif
1317	break;
1318
1319	case VBGDNTVER_WIN81:
1320	#if ARCH_BITS == 64
1321	enmOsType = VBOXOSTYPE_Win81_x64;
1322	#else
1323	enmOsType = VBOXOSTYPE_Win81;
1324	#endif
1325	break;
1326
1327	case VBGDNTVER_WIN10:
1328	#if ARCH_BITS == 64
1329	enmOsType = VBOXOSTYPE_Win10_x64;
1330	#else
1331	enmOsType = VBOXOSTYPE_Win10;
1332	#endif
1333	break;
1334
1335	default:
1336	/* We don't know, therefore NT family. */
1337	enmOsType = VBOXOSTYPE_WinNT;
1338	break;
1339	}
1340	return enmOsType;
1341	}
1342
1343	#ifdef DEBUG
1344
1345	/**
1346	* A quick implementation of AtomicTestAndClear for uint32_t and multiple bits.
1347	*/
1348	static uint32_t vboxugestwinAtomicBitsTestAndClear(void *pu32Bits, uint32_t u32Mask)
1349	{
1350	AssertPtrReturn(pu32Bits, 0);
1351	LogFlowFunc(("pu32Bits=0x%x, u32Mask=0x%x\n", (uint32_t *)pu32Bits, u32Mask));
1352	uint32_t u32Result = 0;
1353	uint32_t u32WorkingMask = u32Mask;
1354	int iBitOffset = ASMBitFirstSetU32 (u32WorkingMask);
1355
1356	while (iBitOffset > 0)
1357	{
1358	bool fSet = ASMAtomicBitTestAndClear(pu32Bits, iBitOffset - 1);
1359	if (fSet)
1360	u32Result \|= 1 << (iBitOffset - 1);
1361	u32WorkingMask &= ~(1 << (iBitOffset - 1));
1362	iBitOffset = ASMBitFirstSetU32 (u32WorkingMask);
1363	}
1364	LogFlowFunc(("Returning 0x%x\n", u32Result));
1365	return u32Result;
1366	}
1367
1368
1369	static void vbgdNtTestAtomicTestAndClearBitsU32(uint32_t u32Mask, uint32_t u32Bits, uint32_t u32Exp)
1370	{
1371	ULONG u32Bits2 = u32Bits;
1372	uint32_t u32Result = vboxugestwinAtomicBitsTestAndClear(&u32Bits2, u32Mask);
1373	if ( u32Result != u32Exp
1374	\|\| (u32Bits2 & u32Mask)
1375	\|\| (u32Bits2 & u32Result)
1376	\|\| ((u32Bits2 \| u32Result) != u32Bits)
1377	)
1378	AssertLogRelMsgFailed(("%s: TEST FAILED: u32Mask=0x%x, u32Bits (before)=0x%x, u32Bits (after)=0x%x, u32Result=0x%x, u32Exp=ox%x\n",
1379	__PRETTY_FUNCTION__, u32Mask, u32Bits, u32Bits2,
1380	u32Result));
1381	}
1382
1383
1384	static void vbgdNtDoTests(void)
1385	{
1386	vbgdNtTestAtomicTestAndClearBitsU32(0x00, 0x23, 0);
1387	vbgdNtTestAtomicTestAndClearBitsU32(0x11, 0, 0);
1388	vbgdNtTestAtomicTestAndClearBitsU32(0x11, 0x22, 0);
1389	vbgdNtTestAtomicTestAndClearBitsU32(0x11, 0x23, 0x1);
1390	vbgdNtTestAtomicTestAndClearBitsU32(0x11, 0x32, 0x10);
1391	vbgdNtTestAtomicTestAndClearBitsU32(0x22, 0x23, 0x22);
1392	}
1393
1394	#endif /* DEBUG */
1395
1396	#ifdef VBOX_WITH_DPC_LATENCY_CHECKER
1397
1398	/*
1399	* DPC latency checker.
1400	*/
1401
1402	/**
1403	* One DPC latency sample.
1404	*/
1405	typedef struct DPCSAMPLE
1406	{
1407	LARGE_INTEGER PerfDelta;
1408	LARGE_INTEGER PerfCounter;
1409	LARGE_INTEGER PerfFrequency;
1410	uint64_t u64TSC;
1411	} DPCSAMPLE;
1412	AssertCompileSize(DPCSAMPLE, 4*8);
1413
1414	/**
1415	* The DPC latency measurement workset.
1416	*/
1417	typedef struct DPCDATA
1418	{
1419	KDPC Dpc;
1420	KTIMER Timer;
1421	KSPIN_LOCK SpinLock;
1422
1423	ULONG ulTimerRes;
1424
1425	bool volatile fFinished;
1426
1427	/** The timer interval (relative). */
1428	LARGE_INTEGER DueTime;
1429
1430	LARGE_INTEGER PerfCounterPrev;
1431
1432	/** Align the sample array on a 64 byte boundrary just for the off chance
1433	* that we'll get cache line aligned memory backing this structure. */
1434	uint32_t auPadding[ARCH_BITS == 32 ? 5 : 7];
1435
1436	int cSamples;
1437	DPCSAMPLE aSamples[8192];
1438	} DPCDATA;
1439
1440	AssertCompileMemberAlignment(DPCDATA, aSamples, 64);
1441
1442	# define VBOXGUEST_DPC_TAG 'DPCS'
1443
1444
1445	/**
1446	* DPC callback routine for the DPC latency measurement code.
1447	*
1448	* @param pDpc The DPC, not used.
1449	* @param pvDeferredContext Pointer to the DPCDATA.
1450	* @param SystemArgument1 System use, ignored.
1451	* @param SystemArgument2 System use, ignored.
1452	*/
1453	static VOID vbgdNtDpcLatencyCallback(PKDPC pDpc, PVOID pvDeferredContext, PVOID SystemArgument1, PVOID SystemArgument2)
1454	{
1455	DPCDATA pData = (DPCDATA )pvDeferredContext;
1456
1457	KeAcquireSpinLockAtDpcLevel(&pData->SpinLock);
1458
1459	if (pData->cSamples >= RT_ELEMENTS(pData->aSamples))
1460	pData->fFinished = true;
1461	else
1462	{
1463	DPCSAMPLE *pSample = &pData->aSamples[pData->cSamples++];
1464
1465	pSample->u64TSC = ASMReadTSC();
1466	pSample->PerfCounter = KeQueryPerformanceCounter(&pSample->PerfFrequency);
1467	pSample->PerfDelta.QuadPart = pSample->PerfCounter.QuadPart - pData->PerfCounterPrev.QuadPart;
1468
1469	pData->PerfCounterPrev.QuadPart = pSample->PerfCounter.QuadPart;
1470
1471	KeSetTimer(&pData->Timer, pData->DueTime, &pData->Dpc);
1472	}
1473
1474	KeReleaseSpinLockFromDpcLevel(&pData->SpinLock);
1475	}
1476
1477
1478	/**
1479	* Handles the DPC latency checker request.
1480	*
1481	* @returns VBox status code.
1482	*/
1483	int VGDrvNtIOCtl_DpcLatencyChecker(void)
1484	{
1485	/*
1486	* Allocate a block of non paged memory for samples and related data.
1487	*/
1488	DPCDATA pData = (DPCDATA )ExAllocatePoolWithTag(NonPagedPool, sizeof(DPCDATA), VBOXGUEST_DPC_TAG);
1489	if (!pData)
1490	{
1491	RTLogBackdoorPrintf("VBoxGuest: DPC: DPCDATA allocation failed.\n");
1492	return VERR_NO_MEMORY;
1493	}
1494
1495	/*
1496	* Initialize the data.
1497	*/
1498	KeInitializeDpc(&pData->Dpc, vbgdNtDpcLatencyCallback, pData);
1499	KeInitializeTimer(&pData->Timer);
1500	KeInitializeSpinLock(&pData->SpinLock);
1501
1502	pData->fFinished = false;
1503	pData->cSamples = 0;
1504	pData->PerfCounterPrev.QuadPart = 0;
1505
1506	pData->ulTimerRes = ExSetTimerResolution(1000 * 10, 1);
1507	pData->DueTime.QuadPart = -(int64_t)pData->ulTimerRes / 10;
1508
1509	/*
1510	* Start the DPC measurements and wait for a full set.
1511	*/
1512	KeSetTimer(&pData->Timer, pData->DueTime, &pData->Dpc);
1513
1514	while (!pData->fFinished)
1515	{
1516	LARGE_INTEGER Interval;
1517	Interval.QuadPart = -100 * 1000 * 10;
1518	KeDelayExecutionThread(KernelMode, TRUE, &Interval);
1519	}
1520
1521	ExSetTimerResolution(0, 0);
1522
1523	/*
1524	* Log everything to the host.
1525	*/
1526	RTLogBackdoorPrintf("DPC: ulTimerRes = %d\n", pData->ulTimerRes);
1527	for (int i = 0; i < pData->cSamples; i++)
1528	{
1529	DPCSAMPLE *pSample = &pData->aSamples[i];
1530
1531	RTLogBackdoorPrintf("[%d] pd %lld pc %lld pf %lld t %lld\n",
1532	i,
1533	pSample->PerfDelta.QuadPart,
1534	pSample->PerfCounter.QuadPart,
1535	pSample->PerfFrequency.QuadPart,
1536	pSample->u64TSC);
1537	}
1538
1539	ExFreePoolWithTag(pData, VBOXGUEST_DPC_TAG);
1540	return VINF_SUCCESS;
1541	}
1542
1543	#endif /* VBOX_WITH_DPC_LATENCY_CHECKER */
1544

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source: vbox/trunk/src/VBox/Additions/common/VBoxGuest/VBoxGuest-win.cpp@ 58106

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