SUPDrv.c@ 48306

Last change on this file since 48306 was 48268, checked in by vboxsync, 11 years ago
VMM: Fix wrong check for SMX.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 224.7 KB

Line
1	/* $Id: SUPDrv.c 48268 2013-09-04 14:33:51Z vboxsync $ */
2	/** @file
3	* VBoxDrv - The VirtualBox Support Driver - Common code.
4	*/
5
6	/*
7	* Copyright (C) 2006-2013 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	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
27	/*******************************************************************************
28	* Header Files *
29	*******************************************************************************/
30	#define LOG_GROUP LOG_GROUP_SUP_DRV
31	#define SUPDRV_AGNOSTIC
32	#include "SUPDrvInternal.h"
33	#ifndef PAGE_SHIFT
34	# include <iprt/param.h>
35	#endif
36	#include <iprt/asm.h>
37	#include <iprt/asm-amd64-x86.h>
38	#include <iprt/asm-math.h>
39	#include <iprt/cpuset.h>
40	#include <iprt/handletable.h>
41	#include <iprt/mem.h>
42	#include <iprt/mp.h>
43	#include <iprt/power.h>
44	#include <iprt/process.h>
45	#include <iprt/semaphore.h>
46	#include <iprt/spinlock.h>
47	#include <iprt/thread.h>
48	#include <iprt/uuid.h>
49	#include <iprt/net.h>
50	#include <iprt/crc.h>
51	#include <iprt/string.h>
52	#include <iprt/timer.h>
53	#if defined(RT_OS_DARWIN) \|\| defined(RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD)
54	# include <iprt/rand.h>
55	# include <iprt/path.h>
56	#endif
57	#include <iprt/x86.h>
58
59	#include <VBox/param.h>
60	#include <VBox/log.h>
61	#include <VBox/err.h>
62	#include <VBox/vmm/hm_svm.h>
63	#include <VBox/vmm/hm_vmx.h>
64
65	#if defined(RT_OS_SOLARIS) \|\| defined(RT_OS_DARWIN)
66	# include "dtrace/SUPDrv.h"
67	#else
68	# define VBOXDRV_SESSION_CREATE(pvSession, fUser) do { } while (0)
69	# define VBOXDRV_SESSION_CLOSE(pvSession) do { } while (0)
70	# define VBOXDRV_IOCTL_ENTRY(pvSession, uIOCtl, pvReqHdr) do { } while (0)
71	# define VBOXDRV_IOCTL_RETURN(pvSession, uIOCtl, pvReqHdr, rcRet, rcReq) do { } while (0)
72	#endif
73
74	/*
75	* Logging assignments:
76	* Log - useful stuff, like failures.
77	* LogFlow - program flow, except the really noisy bits.
78	* Log2 - Cleanup.
79	* Log3 - Loader flow noise.
80	* Log4 - Call VMMR0 flow noise.
81	* Log5 - Native yet-to-be-defined noise.
82	* Log6 - Native ioctl flow noise.
83	*
84	* Logging requires BUILD_TYPE=debug and possibly changes to the logger
85	* instantiation in log-vbox.c(pp).
86	*/
87
88
89	/*******************************************************************************
90	* Defined Constants And Macros *
91	*******************************************************************************/
92	/** The frequency by which we recalculate the u32UpdateHz and
93	* u32UpdateIntervalNS GIP members. The value must be a power of 2. */
94	#define GIP_UPDATEHZ_RECALC_FREQ 0x800
95
96	/** @def VBOX_SVN_REV
97	* The makefile should define this if it can. */
98	#ifndef VBOX_SVN_REV
99	# define VBOX_SVN_REV 0
100	#endif
101
102	#if 0 /* Don't start the GIP timers. Useful when debugging the IPRT timer code. */
103	# define DO_NOT_START_GIP
104	#endif
105
106
107	/*******************************************************************************
108	* Internal Functions *
109	*******************************************************************************/
110	static DECLCALLBACK(int) supdrvSessionObjHandleRetain(RTHANDLETABLE hHandleTable, void pvObj, void pvCtx, void *pvUser);
111	static DECLCALLBACK(void) supdrvSessionObjHandleDelete(RTHANDLETABLE hHandleTable, uint32_t h, void pvObj, void pvCtx, void *pvUser);
112	static int supdrvMemAdd(PSUPDRVMEMREF pMem, PSUPDRVSESSION pSession);
113	static int supdrvMemRelease(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr, SUPDRVMEMREFTYPE eType);
114	static int supdrvIOCtl_LdrOpen(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLDROPEN pReq);
115	static int supdrvIOCtl_LdrLoad(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLDRLOAD pReq);
116	static int supdrvIOCtl_LdrFree(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLDRFREE pReq);
117	static int supdrvIOCtl_LdrGetSymbol(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLDRGETSYMBOL pReq);
118	static int supdrvIDC_LdrGetSymbol(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPDRVIDCREQGETSYM pReq);
119	static int supdrvLdrSetVMMR0EPs(PSUPDRVDEVEXT pDevExt, void pvVMMR0, void pvVMMR0EntryInt, void pvVMMR0EntryFast, void pvVMMR0EntryEx);
120	static void supdrvLdrUnsetVMMR0EPs(PSUPDRVDEVEXT pDevExt);
121	static int supdrvLdrAddUsage(PSUPDRVSESSION pSession, PSUPDRVLDRIMAGE pImage);
122	static void supdrvLdrFree(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage);
123	DECLINLINE(int) supdrvLdrLock(PSUPDRVDEVEXT pDevExt);
124	DECLINLINE(int) supdrvLdrUnlock(PSUPDRVDEVEXT pDevExt);
125	static int supdrvIOCtl_CallServiceModule(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPCALLSERVICE pReq);
126	static int supdrvIOCtl_LoggerSettings(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLOGGERSETTINGS pReq);
127	static int supdrvGipCreate(PSUPDRVDEVEXT pDevExt);
128	static void supdrvGipDestroy(PSUPDRVDEVEXT pDevExt);
129	static DECLCALLBACK(void) supdrvGipSyncTimer(PRTTIMER pTimer, void *pvUser, uint64_t iTick);
130	static DECLCALLBACK(void) supdrvGipAsyncTimer(PRTTIMER pTimer, void *pvUser, uint64_t iTick);
131	static DECLCALLBACK(void) supdrvGipMpEvent(RTMPEVENT enmEvent, RTCPUID idCpu, void *pvUser);
132	static void supdrvGipInit(PSUPDRVDEVEXT pDevExt, PSUPGLOBALINFOPAGE pGip, RTHCPHYS HCPhys,
133	uint64_t u64NanoTS, unsigned uUpdateHz, unsigned cCpus);
134	static DECLCALLBACK(void) supdrvGipInitOnCpu(RTCPUID idCpu, void pvUser1, void pvUser2);
135	static void supdrvGipTerm(PSUPGLOBALINFOPAGE pGip);
136	static void supdrvGipUpdate(PSUPDRVDEVEXT pDevExt, uint64_t u64NanoTS, uint64_t u64TSC, RTCPUID idCpu, uint64_t iTick);
137	static void supdrvGipUpdatePerCpu(PSUPDRVDEVEXT pDevExt, uint64_t u64NanoTS, uint64_t u64TSC,
138	RTCPUID idCpu, uint8_t idApic, uint64_t iTick);
139	static void supdrvGipInitCpu(PSUPGLOBALINFOPAGE pGip, PSUPGIPCPU pCpu, uint64_t u64NanoTS);
140
141
142	/*******************************************************************************
143	* Global Variables *
144	*******************************************************************************/
145	DECLEXPORT(PSUPGLOBALINFOPAGE) g_pSUPGlobalInfoPage = NULL;
146
147	/**
148	* Array of the R0 SUP API.
149	*/
150	static SUPFUNC g_aFunctions[] =
151	{
152	/* SED: START */
153	/* name function */
154	/* Entries with absolute addresses determined at runtime, fixup
155	code makes ugly ASSUMPTIONS about the order here: */
156	{ "SUPR0AbsIs64bit", (void *)0 },
157	{ "SUPR0Abs64bitKernelCS", (void *)0 },
158	{ "SUPR0Abs64bitKernelSS", (void *)0 },
159	{ "SUPR0Abs64bitKernelDS", (void *)0 },
160	{ "SUPR0AbsKernelCS", (void *)0 },
161	{ "SUPR0AbsKernelSS", (void *)0 },
162	{ "SUPR0AbsKernelDS", (void *)0 },
163	{ "SUPR0AbsKernelES", (void *)0 },
164	{ "SUPR0AbsKernelFS", (void *)0 },
165	{ "SUPR0AbsKernelGS", (void *)0 },
166	/* Normal function pointers: */
167	{ "g_pSUPGlobalInfoPage", (void )&g_pSUPGlobalInfoPage }, / SED: DATA */
168	{ "SUPGetGIP", (void *)SUPGetGIP },
169	{ "SUPR0ComponentDeregisterFactory", (void *)SUPR0ComponentDeregisterFactory },
170	{ "SUPR0ComponentQueryFactory", (void *)SUPR0ComponentQueryFactory },
171	{ "SUPR0ComponentRegisterFactory", (void *)SUPR0ComponentRegisterFactory },
172	{ "SUPR0ContAlloc", (void *)SUPR0ContAlloc },
173	{ "SUPR0ContFree", (void *)SUPR0ContFree },
174	{ "SUPR0EnableVTx", (void *)SUPR0EnableVTx },
175	{ "SUPR0SuspendVTxOnCpu", (void *)SUPR0SuspendVTxOnCpu },
176	{ "SUPR0ResumeVTxOnCpu", (void *)SUPR0ResumeVTxOnCpu },
177	{ "SUPR0GetPagingMode", (void *)SUPR0GetPagingMode },
178	{ "SUPR0LockMem", (void *)SUPR0LockMem },
179	{ "SUPR0LowAlloc", (void *)SUPR0LowAlloc },
180	{ "SUPR0LowFree", (void *)SUPR0LowFree },
181	{ "SUPR0MemAlloc", (void *)SUPR0MemAlloc },
182	{ "SUPR0MemFree", (void *)SUPR0MemFree },
183	{ "SUPR0MemGetPhys", (void *)SUPR0MemGetPhys },
184	{ "SUPR0ObjAddRef", (void *)SUPR0ObjAddRef },
185	{ "SUPR0ObjAddRefEx", (void *)SUPR0ObjAddRefEx },
186	{ "SUPR0ObjRegister", (void *)SUPR0ObjRegister },
187	{ "SUPR0ObjRelease", (void *)SUPR0ObjRelease },
188	{ "SUPR0ObjVerifyAccess", (void *)SUPR0ObjVerifyAccess },
189	{ "SUPR0PageAllocEx", (void *)SUPR0PageAllocEx },
190	{ "SUPR0PageFree", (void *)SUPR0PageFree },
191	{ "SUPR0Printf", (void *)SUPR0Printf },
192	{ "SUPR0TracerDeregisterDrv", (void *)SUPR0TracerDeregisterDrv },
193	{ "SUPR0TracerDeregisterImpl", (void *)SUPR0TracerDeregisterImpl },
194	{ "SUPR0TracerFireProbe", (void *)SUPR0TracerFireProbe },
195	{ "SUPR0TracerRegisterDrv", (void *)SUPR0TracerRegisterDrv },
196	{ "SUPR0TracerRegisterImpl", (void *)SUPR0TracerRegisterImpl },
197	{ "SUPR0TracerRegisterModule", (void *)SUPR0TracerRegisterModule },
198	{ "SUPR0TracerUmodProbeFire", (void *)SUPR0TracerUmodProbeFire },
199	{ "SUPR0UnlockMem", (void *)SUPR0UnlockMem },
200	{ "SUPSemEventClose", (void *)SUPSemEventClose },
201	{ "SUPSemEventCreate", (void *)SUPSemEventCreate },
202	{ "SUPSemEventGetResolution", (void *)SUPSemEventGetResolution },
203	{ "SUPSemEventMultiClose", (void *)SUPSemEventMultiClose },
204	{ "SUPSemEventMultiCreate", (void *)SUPSemEventMultiCreate },
205	{ "SUPSemEventMultiGetResolution", (void *)SUPSemEventMultiGetResolution },
206	{ "SUPSemEventMultiReset", (void *)SUPSemEventMultiReset },
207	{ "SUPSemEventMultiSignal", (void *)SUPSemEventMultiSignal },
208	{ "SUPSemEventMultiWait", (void *)SUPSemEventMultiWait },
209	{ "SUPSemEventMultiWaitNoResume", (void *)SUPSemEventMultiWaitNoResume },
210	{ "SUPSemEventMultiWaitNsAbsIntr", (void *)SUPSemEventMultiWaitNsAbsIntr },
211	{ "SUPSemEventMultiWaitNsRelIntr", (void *)SUPSemEventMultiWaitNsRelIntr },
212	{ "SUPSemEventSignal", (void *)SUPSemEventSignal },
213	{ "SUPSemEventWait", (void *)SUPSemEventWait },
214	{ "SUPSemEventWaitNoResume", (void *)SUPSemEventWaitNoResume },
215	{ "SUPSemEventWaitNsAbsIntr", (void *)SUPSemEventWaitNsAbsIntr },
216	{ "SUPSemEventWaitNsRelIntr", (void *)SUPSemEventWaitNsRelIntr },
217
218	{ "RTAssertAreQuiet", (void *)RTAssertAreQuiet },
219	{ "RTAssertMayPanic", (void *)RTAssertMayPanic },
220	{ "RTAssertMsg1", (void *)RTAssertMsg1 },
221	{ "RTAssertMsg2AddV", (void *)RTAssertMsg2AddV },
222	{ "RTAssertMsg2V", (void *)RTAssertMsg2V },
223	{ "RTAssertSetMayPanic", (void *)RTAssertSetMayPanic },
224	{ "RTAssertSetQuiet", (void *)RTAssertSetQuiet },
225	{ "RTCrc32", (void *)RTCrc32 },
226	{ "RTCrc32Finish", (void *)RTCrc32Finish },
227	{ "RTCrc32Process", (void *)RTCrc32Process },
228	{ "RTCrc32Start", (void *)RTCrc32Start },
229	{ "RTErrConvertFromErrno", (void *)RTErrConvertFromErrno },
230	{ "RTErrConvertToErrno", (void *)RTErrConvertToErrno },
231	{ "RTHandleTableAllocWithCtx", (void *)RTHandleTableAllocWithCtx },
232	{ "RTHandleTableCreate", (void *)RTHandleTableCreate },
233	{ "RTHandleTableCreateEx", (void *)RTHandleTableCreateEx },
234	{ "RTHandleTableDestroy", (void *)RTHandleTableDestroy },
235	{ "RTHandleTableFreeWithCtx", (void *)RTHandleTableFreeWithCtx },
236	{ "RTHandleTableLookupWithCtx", (void *)RTHandleTableLookupWithCtx },
237	{ "RTLogDefaultInstance", (void *)RTLogDefaultInstance },
238	{ "RTLogGetDefaultInstance", (void *)RTLogGetDefaultInstance },
239	{ "RTLogLoggerExV", (void *)RTLogLoggerExV },
240	{ "RTLogPrintfV", (void *)RTLogPrintfV },
241	{ "RTLogRelDefaultInstance", (void *)RTLogRelDefaultInstance },
242	{ "RTLogSetDefaultInstanceThread", (void *)RTLogSetDefaultInstanceThread },
243	{ "RTMemAllocExTag", (void *)RTMemAllocExTag },
244	{ "RTMemAllocTag", (void *)RTMemAllocTag },
245	{ "RTMemAllocVarTag", (void *)RTMemAllocVarTag },
246	{ "RTMemAllocZTag", (void *)RTMemAllocZTag },
247	{ "RTMemAllocZVarTag", (void *)RTMemAllocZVarTag },
248	{ "RTMemDupExTag", (void *)RTMemDupExTag },
249	{ "RTMemDupTag", (void *)RTMemDupTag },
250	{ "RTMemFree", (void *)RTMemFree },
251	{ "RTMemFreeEx", (void *)RTMemFreeEx },
252	{ "RTMemReallocTag", (void *)RTMemReallocTag },
253	{ "RTMpCpuId", (void *)RTMpCpuId },
254	{ "RTMpCpuIdFromSetIndex", (void *)RTMpCpuIdFromSetIndex },
255	{ "RTMpCpuIdToSetIndex", (void *)RTMpCpuIdToSetIndex },
256	{ "RTMpGetArraySize", (void *)RTMpGetArraySize },
257	{ "RTMpGetCount", (void *)RTMpGetCount },
258	{ "RTMpGetMaxCpuId", (void *)RTMpGetMaxCpuId },
259	{ "RTMpGetOnlineCount", (void *)RTMpGetOnlineCount },
260	{ "RTMpGetOnlineSet", (void *)RTMpGetOnlineSet },
261	{ "RTMpGetSet", (void *)RTMpGetSet },
262	{ "RTMpIsCpuOnline", (void *)RTMpIsCpuOnline },
263	{ "RTMpIsCpuPossible", (void *)RTMpIsCpuPossible },
264	{ "RTMpIsCpuWorkPending", (void *)RTMpIsCpuWorkPending },
265	{ "RTMpNotificationDeregister", (void *)RTMpNotificationDeregister },
266	{ "RTMpNotificationRegister", (void *)RTMpNotificationRegister },
267	{ "RTMpOnAll", (void *)RTMpOnAll },
268	{ "RTMpOnOthers", (void *)RTMpOnOthers },
269	{ "RTMpOnSpecific", (void *)RTMpOnSpecific },
270	{ "RTMpPokeCpu", (void *)RTMpPokeCpu },
271	{ "RTNetIPv4AddDataChecksum", (void *)RTNetIPv4AddDataChecksum },
272	{ "RTNetIPv4AddTCPChecksum", (void *)RTNetIPv4AddTCPChecksum },
273	{ "RTNetIPv4AddUDPChecksum", (void *)RTNetIPv4AddUDPChecksum },
274	{ "RTNetIPv4FinalizeChecksum", (void *)RTNetIPv4FinalizeChecksum },
275	{ "RTNetIPv4HdrChecksum", (void *)RTNetIPv4HdrChecksum },
276	{ "RTNetIPv4IsDHCPValid", (void *)RTNetIPv4IsDHCPValid },
277	{ "RTNetIPv4IsHdrValid", (void *)RTNetIPv4IsHdrValid },
278	{ "RTNetIPv4IsTCPSizeValid", (void *)RTNetIPv4IsTCPSizeValid },
279	{ "RTNetIPv4IsTCPValid", (void *)RTNetIPv4IsTCPValid },
280	{ "RTNetIPv4IsUDPSizeValid", (void *)RTNetIPv4IsUDPSizeValid },
281	{ "RTNetIPv4IsUDPValid", (void *)RTNetIPv4IsUDPValid },
282	{ "RTNetIPv4PseudoChecksum", (void *)RTNetIPv4PseudoChecksum },
283	{ "RTNetIPv4PseudoChecksumBits", (void *)RTNetIPv4PseudoChecksumBits },
284	{ "RTNetIPv4TCPChecksum", (void *)RTNetIPv4TCPChecksum },
285	{ "RTNetIPv4UDPChecksum", (void *)RTNetIPv4UDPChecksum },
286	{ "RTNetIPv6PseudoChecksum", (void *)RTNetIPv6PseudoChecksum },
287	{ "RTNetIPv6PseudoChecksumBits", (void *)RTNetIPv6PseudoChecksumBits },
288	{ "RTNetIPv6PseudoChecksumEx", (void *)RTNetIPv6PseudoChecksumEx },
289	{ "RTNetTCPChecksum", (void *)RTNetTCPChecksum },
290	{ "RTNetUDPChecksum", (void *)RTNetUDPChecksum },
291	{ "RTPowerNotificationDeregister", (void *)RTPowerNotificationDeregister },
292	{ "RTPowerNotificationRegister", (void *)RTPowerNotificationRegister },
293	{ "RTProcSelf", (void *)RTProcSelf },
294	{ "RTR0AssertPanicSystem", (void *)RTR0AssertPanicSystem },
295	{ "RTR0MemAreKrnlAndUsrDifferent", (void *)RTR0MemAreKrnlAndUsrDifferent },
296	{ "RTR0MemKernelIsValidAddr", (void *)RTR0MemKernelIsValidAddr },
297	{ "RTR0MemKernelCopyFrom", (void *)RTR0MemKernelCopyFrom },
298	{ "RTR0MemKernelCopyTo", (void *)RTR0MemKernelCopyTo },
299	{ "RTR0MemObjAddress", (void *)RTR0MemObjAddress },
300	{ "RTR0MemObjAddressR3", (void *)RTR0MemObjAddressR3 },
301	{ "RTR0MemObjAllocContTag", (void *)RTR0MemObjAllocContTag },
302	{ "RTR0MemObjAllocLowTag", (void *)RTR0MemObjAllocLowTag },
303	{ "RTR0MemObjAllocPageTag", (void *)RTR0MemObjAllocPageTag },
304	{ "RTR0MemObjAllocPhysExTag", (void *)RTR0MemObjAllocPhysExTag },
305	{ "RTR0MemObjAllocPhysNCTag", (void *)RTR0MemObjAllocPhysNCTag },
306	{ "RTR0MemObjAllocPhysTag", (void *)RTR0MemObjAllocPhysTag },
307	{ "RTR0MemObjEnterPhysTag", (void *)RTR0MemObjEnterPhysTag },
308	{ "RTR0MemObjFree", (void *)RTR0MemObjFree },
309	{ "RTR0MemObjGetPagePhysAddr", (void *)RTR0MemObjGetPagePhysAddr },
310	{ "RTR0MemObjIsMapping", (void *)RTR0MemObjIsMapping },
311	{ "RTR0MemObjLockUserTag", (void *)RTR0MemObjLockUserTag },
312	{ "RTR0MemObjMapKernelExTag", (void *)RTR0MemObjMapKernelExTag },
313	{ "RTR0MemObjMapKernelTag", (void *)RTR0MemObjMapKernelTag },
314	{ "RTR0MemObjMapUserTag", (void *)RTR0MemObjMapUserTag },
315	{ "RTR0MemObjProtect", (void *)RTR0MemObjProtect },
316	{ "RTR0MemObjSize", (void *)RTR0MemObjSize },
317	{ "RTR0MemUserCopyFrom", (void *)RTR0MemUserCopyFrom },
318	{ "RTR0MemUserCopyTo", (void *)RTR0MemUserCopyTo },
319	{ "RTR0MemUserIsValidAddr", (void *)RTR0MemUserIsValidAddr },
320	{ "RTR0ProcHandleSelf", (void *)RTR0ProcHandleSelf },
321	{ "RTSemEventCreate", (void *)RTSemEventCreate },
322	{ "RTSemEventDestroy", (void *)RTSemEventDestroy },
323	{ "RTSemEventGetResolution", (void *)RTSemEventGetResolution },
324	{ "RTSemEventMultiCreate", (void *)RTSemEventMultiCreate },
325	{ "RTSemEventMultiDestroy", (void *)RTSemEventMultiDestroy },
326	{ "RTSemEventMultiGetResolution", (void *)RTSemEventMultiGetResolution },
327	{ "RTSemEventMultiReset", (void *)RTSemEventMultiReset },
328	{ "RTSemEventMultiSignal", (void *)RTSemEventMultiSignal },
329	{ "RTSemEventMultiWait", (void *)RTSemEventMultiWait },
330	{ "RTSemEventMultiWaitEx", (void *)RTSemEventMultiWaitEx },
331	{ "RTSemEventMultiWaitExDebug", (void *)RTSemEventMultiWaitExDebug },
332	{ "RTSemEventMultiWaitNoResume", (void *)RTSemEventMultiWaitNoResume },
333	{ "RTSemEventSignal", (void *)RTSemEventSignal },
334	{ "RTSemEventWait", (void *)RTSemEventWait },
335	{ "RTSemEventWaitEx", (void *)RTSemEventWaitEx },
336	{ "RTSemEventWaitExDebug", (void *)RTSemEventWaitExDebug },
337	{ "RTSemEventWaitNoResume", (void *)RTSemEventWaitNoResume },
338	{ "RTSemFastMutexCreate", (void *)RTSemFastMutexCreate },
339	{ "RTSemFastMutexDestroy", (void *)RTSemFastMutexDestroy },
340	{ "RTSemFastMutexRelease", (void *)RTSemFastMutexRelease },
341	{ "RTSemFastMutexRequest", (void *)RTSemFastMutexRequest },
342	{ "RTSemMutexCreate", (void *)RTSemMutexCreate },
343	{ "RTSemMutexDestroy", (void *)RTSemMutexDestroy },
344	{ "RTSemMutexRelease", (void *)RTSemMutexRelease },
345	{ "RTSemMutexRequest", (void *)RTSemMutexRequest },
346	{ "RTSemMutexRequestDebug", (void *)RTSemMutexRequestDebug },
347	{ "RTSemMutexRequestNoResume", (void *)RTSemMutexRequestNoResume },
348	{ "RTSemMutexRequestNoResumeDebug", (void *)RTSemMutexRequestNoResumeDebug },
349	{ "RTSpinlockAcquire", (void *)RTSpinlockAcquire },
350	{ "RTSpinlockCreate", (void *)RTSpinlockCreate },
351	{ "RTSpinlockDestroy", (void *)RTSpinlockDestroy },
352	{ "RTSpinlockRelease", (void *)RTSpinlockRelease },
353	{ "RTSpinlockReleaseNoInts", (void *)RTSpinlockReleaseNoInts },
354	{ "RTStrCopy", (void *)RTStrCopy },
355	{ "RTStrDupTag", (void *)RTStrDupTag },
356	{ "RTStrFormat", (void *)RTStrFormat },
357	{ "RTStrFormatNumber", (void *)RTStrFormatNumber },
358	{ "RTStrFormatTypeDeregister", (void *)RTStrFormatTypeDeregister },
359	{ "RTStrFormatTypeRegister", (void *)RTStrFormatTypeRegister },
360	{ "RTStrFormatTypeSetUser", (void *)RTStrFormatTypeSetUser },
361	{ "RTStrFormatV", (void *)RTStrFormatV },
362	{ "RTStrFree", (void *)RTStrFree },
363	{ "RTStrNCmp", (void *)RTStrNCmp },
364	{ "RTStrPrintf", (void *)RTStrPrintf },
365	{ "RTStrPrintfEx", (void *)RTStrPrintfEx },
366	{ "RTStrPrintfExV", (void *)RTStrPrintfExV },
367	{ "RTStrPrintfV", (void *)RTStrPrintfV },
368	{ "RTThreadCreate", (void *)RTThreadCreate },
369	{ "RTThreadCtxHooksAreRegistered", (void *)RTThreadCtxHooksAreRegistered },
370	{ "RTThreadCtxHooksCreate", (void *)RTThreadCtxHooksCreate },
371	{ "RTThreadCtxHooksDeregister", (void *)RTThreadCtxHooksDeregister },
372	{ "RTThreadCtxHooksRegister", (void *)RTThreadCtxHooksRegister },
373	{ "RTThreadCtxHooksRelease", (void *)RTThreadCtxHooksRelease },
374	{ "RTThreadCtxHooksRetain", (void *)RTThreadCtxHooksRetain },
375	{ "RTThreadGetName", (void *)RTThreadGetName },
376	{ "RTThreadGetNative", (void *)RTThreadGetNative },
377	{ "RTThreadGetType", (void *)RTThreadGetType },
378	{ "RTThreadIsInInterrupt", (void *)RTThreadIsInInterrupt },
379	{ "RTThreadNativeSelf", (void *)RTThreadNativeSelf },
380	{ "RTThreadPreemptDisable", (void *)RTThreadPreemptDisable },
381	{ "RTThreadPreemptIsEnabled", (void *)RTThreadPreemptIsEnabled },
382	{ "RTThreadPreemptIsPending", (void *)RTThreadPreemptIsPending },
383	{ "RTThreadPreemptIsPendingTrusty", (void *)RTThreadPreemptIsPendingTrusty },
384	{ "RTThreadPreemptIsPossible", (void *)RTThreadPreemptIsPossible },
385	{ "RTThreadPreemptRestore", (void *)RTThreadPreemptRestore },
386	{ "RTThreadSelf", (void *)RTThreadSelf },
387	{ "RTThreadSelfName", (void *)RTThreadSelfName },
388	{ "RTThreadSleep", (void *)RTThreadSleep },
389	{ "RTThreadUserReset", (void *)RTThreadUserReset },
390	{ "RTThreadUserSignal", (void *)RTThreadUserSignal },
391	{ "RTThreadUserWait", (void *)RTThreadUserWait },
392	{ "RTThreadUserWaitNoResume", (void *)RTThreadUserWaitNoResume },
393	{ "RTThreadWait", (void *)RTThreadWait },
394	{ "RTThreadWaitNoResume", (void *)RTThreadWaitNoResume },
395	{ "RTThreadYield", (void *)RTThreadYield },
396	{ "RTTimeMilliTS", (void *)RTTimeMilliTS },
397	{ "RTTimeNanoTS", (void *)RTTimeNanoTS },
398	{ "RTTimeNow", (void *)RTTimeNow },
399	{ "RTTimerCanDoHighResolution", (void *)RTTimerCanDoHighResolution },
400	{ "RTTimerChangeInterval", (void *)RTTimerChangeInterval },
401	{ "RTTimerCreate", (void *)RTTimerCreate },
402	{ "RTTimerCreateEx", (void *)RTTimerCreateEx },
403	{ "RTTimerDestroy", (void *)RTTimerDestroy },
404	{ "RTTimerGetSystemGranularity", (void *)RTTimerGetSystemGranularity },
405	{ "RTTimerReleaseSystemGranularity", (void *)RTTimerReleaseSystemGranularity },
406	{ "RTTimerRequestSystemGranularity", (void *)RTTimerRequestSystemGranularity },
407	{ "RTTimerStart", (void *)RTTimerStart },
408	{ "RTTimerStop", (void *)RTTimerStop },
409	{ "RTTimeSystemMilliTS", (void *)RTTimeSystemMilliTS },
410	{ "RTTimeSystemNanoTS", (void *)RTTimeSystemNanoTS },
411	{ "RTUuidCompare", (void *)RTUuidCompare },
412	{ "RTUuidCompareStr", (void *)RTUuidCompareStr },
413	{ "RTUuidFromStr", (void *)RTUuidFromStr },
414	/* SED: END */
415	};
416
417	#if defined(RT_OS_DARWIN) \|\| defined(RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD)
418	/**
419	* Drag in the rest of IRPT since we share it with the
420	* rest of the kernel modules on darwin.
421	*/
422	PFNRT g_apfnVBoxDrvIPRTDeps[] =
423	{
424	/* VBoxNetAdp */
425	(PFNRT)RTRandBytes,
426	/* VBoxUSB */
427	(PFNRT)RTPathStripFilename,
428	NULL
429	};
430	#endif /* RT_OS_DARWIN \|\| RT_OS_SOLARIS \|\| RT_OS_SOLARIS */
431
432
433	/**
434	* Initializes the device extentsion structure.
435	*
436	* @returns IPRT status code.
437	* @param pDevExt The device extension to initialize.
438	* @param cbSession The size of the session structure. The size of
439	* SUPDRVSESSION may be smaller when SUPDRV_AGNOSTIC is
440	* defined because we're skipping the OS specific members
441	* then.
442	*/
443	int VBOXCALL supdrvInitDevExt(PSUPDRVDEVEXT pDevExt, size_t cbSession)
444	{
445	int rc;
446
447	#ifdef SUPDRV_WITH_RELEASE_LOGGER
448	/*
449	* Create the release log.
450	*/
451	static const char * const s_apszGroups[] = VBOX_LOGGROUP_NAMES;
452	PRTLOGGER pRelLogger;
453	rc = RTLogCreate(&pRelLogger, 0 /* fFlags */, "all",
454	"VBOX_RELEASE_LOG", RT_ELEMENTS(s_apszGroups), s_apszGroups, RTLOGDEST_STDOUT \| RTLOGDEST_DEBUGGER, NULL);
455	if (RT_SUCCESS(rc))
456	RTLogRelSetDefaultInstance(pRelLogger);
457	/** @todo Add native hook for getting logger config parameters and setting
458	* them. On linux we should use the module parameter stuff... */
459	#endif
460
461	/*
462	* Initialize it.
463	*/
464	memset(pDevExt, 0, sizeof(*pDevExt));
465	rc = RTSpinlockCreate(&pDevExt->Spinlock, RTSPINLOCK_FLAGS_INTERRUPT_SAFE, "SUPDrvDevExt");
466	if (RT_SUCCESS(rc))
467	{
468	rc = RTSpinlockCreate(&pDevExt->hGipSpinlock, RTSPINLOCK_FLAGS_INTERRUPT_SAFE, "SUPDrvGip");
469	if (RT_SUCCESS(rc))
470	{
471	#ifdef SUPDRV_USE_MUTEX_FOR_LDR
472	rc = RTSemMutexCreate(&pDevExt->mtxLdr);
473	#else
474	rc = RTSemFastMutexCreate(&pDevExt->mtxLdr);
475	#endif
476	if (RT_SUCCESS(rc))
477	{
478	rc = RTSemFastMutexCreate(&pDevExt->mtxComponentFactory);
479	if (RT_SUCCESS(rc))
480	{
481	#ifdef SUPDRV_USE_MUTEX_FOR_LDR
482	rc = RTSemMutexCreate(&pDevExt->mtxGip);
483	#else
484	rc = RTSemFastMutexCreate(&pDevExt->mtxGip);
485	#endif
486	if (RT_SUCCESS(rc))
487	{
488	rc = supdrvGipCreate(pDevExt);
489	if (RT_SUCCESS(rc))
490	{
491	rc = supdrvTracerInit(pDevExt);
492	if (RT_SUCCESS(rc))
493	{
494	pDevExt->pLdrInitImage = NULL;
495	pDevExt->hLdrInitThread = NIL_RTNATIVETHREAD;
496	pDevExt->u32Cookie = BIRD; /** @todo make this random? */
497	pDevExt->cbSession = (uint32_t)cbSession;
498
499	/*
500	* Fixup the absolute symbols.
501	*
502	* Because of the table indexing assumptions we'll have a little #ifdef orgy
503	* here rather than distributing this to OS specific files. At least for now.
504	*/
505	#ifdef RT_OS_DARWIN
506	# if ARCH_BITS == 32
507	if (SUPR0GetPagingMode() >= SUPPAGINGMODE_AMD64)
508	{
509	g_aFunctions[0].pfn = (void )1; / SUPR0AbsIs64bit */
510	g_aFunctions[1].pfn = (void )0x80; / SUPR0Abs64bitKernelCS - KERNEL64_CS, seg.h */
511	g_aFunctions[2].pfn = (void )0x88; / SUPR0Abs64bitKernelSS - KERNEL64_SS, seg.h */
512	g_aFunctions[3].pfn = (void )0x88; / SUPR0Abs64bitKernelDS - KERNEL64_SS, seg.h */
513	}
514	else
515	g_aFunctions[0].pfn = g_aFunctions[1].pfn = g_aFunctions[2].pfn = g_aFunctions[4].pfn = (void *)0;
516	g_aFunctions[4].pfn = (void )0x08; / SUPR0AbsKernelCS - KERNEL_CS, seg.h */
517	g_aFunctions[5].pfn = (void )0x10; / SUPR0AbsKernelSS - KERNEL_DS, seg.h */
518	g_aFunctions[6].pfn = (void )0x10; / SUPR0AbsKernelDS - KERNEL_DS, seg.h */
519	g_aFunctions[7].pfn = (void )0x10; / SUPR0AbsKernelES - KERNEL_DS, seg.h */
520	g_aFunctions[8].pfn = (void )0x10; / SUPR0AbsKernelFS - KERNEL_DS, seg.h */
521	g_aFunctions[9].pfn = (void )0x48; / SUPR0AbsKernelGS - CPU_DATA_GS, seg.h */
522	# else /* 64-bit darwin: */
523	g_aFunctions[0].pfn = (void )1; / SUPR0AbsIs64bit */
524	g_aFunctions[1].pfn = (void )(uintptr_t)ASMGetCS(); / SUPR0Abs64bitKernelCS */
525	g_aFunctions[2].pfn = (void )(uintptr_t)ASMGetSS(); / SUPR0Abs64bitKernelSS */
526	g_aFunctions[3].pfn = (void )0; / SUPR0Abs64bitKernelDS */
527	g_aFunctions[4].pfn = (void )(uintptr_t)ASMGetCS(); / SUPR0AbsKernelCS */
528	g_aFunctions[5].pfn = (void )(uintptr_t)ASMGetSS(); / SUPR0AbsKernelSS */
529	g_aFunctions[6].pfn = (void )0; / SUPR0AbsKernelDS */
530	g_aFunctions[7].pfn = (void )0; / SUPR0AbsKernelES */
531	g_aFunctions[8].pfn = (void )0; / SUPR0AbsKernelFS */
532	g_aFunctions[9].pfn = (void )0; / SUPR0AbsKernelGS */
533
534	# endif
535	#else /* !RT_OS_DARWIN */
536	# if ARCH_BITS == 64
537	g_aFunctions[0].pfn = (void )1; / SUPR0AbsIs64bit */
538	g_aFunctions[1].pfn = (void )(uintptr_t)ASMGetCS(); / SUPR0Abs64bitKernelCS */
539	g_aFunctions[2].pfn = (void )(uintptr_t)ASMGetSS(); / SUPR0Abs64bitKernelSS */
540	g_aFunctions[3].pfn = (void )(uintptr_t)ASMGetDS(); / SUPR0Abs64bitKernelDS */
541	# else
542	g_aFunctions[0].pfn = g_aFunctions[1].pfn = g_aFunctions[2].pfn = g_aFunctions[4].pfn = (void *)0;
543	# endif
544	g_aFunctions[4].pfn = (void )(uintptr_t)ASMGetCS(); / SUPR0AbsKernelCS */
545	g_aFunctions[5].pfn = (void )(uintptr_t)ASMGetSS(); / SUPR0AbsKernelSS */
546	g_aFunctions[6].pfn = (void )(uintptr_t)ASMGetDS(); / SUPR0AbsKernelDS */
547	g_aFunctions[7].pfn = (void )(uintptr_t)ASMGetES(); / SUPR0AbsKernelES */
548	g_aFunctions[8].pfn = (void )(uintptr_t)ASMGetFS(); / SUPR0AbsKernelFS */
549	g_aFunctions[9].pfn = (void )(uintptr_t)ASMGetGS(); / SUPR0AbsKernelGS */
550	#endif /* !RT_OS_DARWIN */
551	return VINF_SUCCESS;
552	}
553
554	supdrvGipDestroy(pDevExt);
555	}
556
557	#ifdef SUPDRV_USE_MUTEX_FOR_GIP
558	RTSemMutexDestroy(pDevExt->mtxGip);
559	pDevExt->mtxGip = NIL_RTSEMMUTEX;
560	#else
561	RTSemFastMutexDestroy(pDevExt->mtxGip);
562	pDevExt->mtxGip = NIL_RTSEMFASTMUTEX;
563	#endif
564	}
565	RTSemFastMutexDestroy(pDevExt->mtxComponentFactory);
566	pDevExt->mtxComponentFactory = NIL_RTSEMFASTMUTEX;
567	}
568	#ifdef SUPDRV_USE_MUTEX_FOR_LDR
569	RTSemMutexDestroy(pDevExt->mtxLdr);
570	pDevExt->mtxLdr = NIL_RTSEMMUTEX;
571	#else
572	RTSemFastMutexDestroy(pDevExt->mtxLdr);
573	pDevExt->mtxLdr = NIL_RTSEMFASTMUTEX;
574	#endif
575	}
576	RTSpinlockDestroy(pDevExt->hGipSpinlock);
577	pDevExt->hGipSpinlock = NIL_RTSPINLOCK;
578	}
579	RTSpinlockDestroy(pDevExt->Spinlock);
580	pDevExt->Spinlock = NIL_RTSPINLOCK;
581	}
582	#ifdef SUPDRV_WITH_RELEASE_LOGGER
583	RTLogDestroy(RTLogRelSetDefaultInstance(NULL));
584	RTLogDestroy(RTLogSetDefaultInstance(NULL));
585	#endif
586
587	return rc;
588	}
589
590
591	/**
592	* Delete the device extension (e.g. cleanup members).
593	*
594	* @param pDevExt The device extension to delete.
595	*/
596	void VBOXCALL supdrvDeleteDevExt(PSUPDRVDEVEXT pDevExt)
597	{
598	PSUPDRVOBJ pObj;
599	PSUPDRVUSAGE pUsage;
600
601	/*
602	* Kill mutexes and spinlocks.
603	*/
604	#ifdef SUPDRV_USE_MUTEX_FOR_GIP
605	RTSemMutexDestroy(pDevExt->mtxGip);
606	pDevExt->mtxGip = NIL_RTSEMMUTEX;
607	#else
608	RTSemFastMutexDestroy(pDevExt->mtxGip);
609	pDevExt->mtxGip = NIL_RTSEMFASTMUTEX;
610	#endif
611	#ifdef SUPDRV_USE_MUTEX_FOR_LDR
612	RTSemMutexDestroy(pDevExt->mtxLdr);
613	pDevExt->mtxLdr = NIL_RTSEMMUTEX;
614	#else
615	RTSemFastMutexDestroy(pDevExt->mtxLdr);
616	pDevExt->mtxLdr = NIL_RTSEMFASTMUTEX;
617	#endif
618	RTSpinlockDestroy(pDevExt->Spinlock);
619	pDevExt->Spinlock = NIL_RTSPINLOCK;
620	RTSemFastMutexDestroy(pDevExt->mtxComponentFactory);
621	pDevExt->mtxComponentFactory = NIL_RTSEMFASTMUTEX;
622
623	/*
624	* Free lists.
625	*/
626	/* objects. */
627	pObj = pDevExt->pObjs;
628	Assert(!pObj); /* (can trigger on forced unloads) */
629	pDevExt->pObjs = NULL;
630	while (pObj)
631	{
632	void *pvFree = pObj;
633	pObj = pObj->pNext;
634	RTMemFree(pvFree);
635	}
636
637	/* usage records. */
638	pUsage = pDevExt->pUsageFree;
639	pDevExt->pUsageFree = NULL;
640	while (pUsage)
641	{
642	void *pvFree = pUsage;
643	pUsage = pUsage->pNext;
644	RTMemFree(pvFree);
645	}
646
647	/* kill the GIP. */
648	supdrvGipDestroy(pDevExt);
649	RTSpinlockDestroy(pDevExt->hGipSpinlock);
650	pDevExt->hGipSpinlock = NIL_RTSPINLOCK;
651
652	supdrvTracerTerm(pDevExt);
653
654	#ifdef SUPDRV_WITH_RELEASE_LOGGER
655	/* destroy the loggers. */
656	RTLogDestroy(RTLogRelSetDefaultInstance(NULL));
657	RTLogDestroy(RTLogSetDefaultInstance(NULL));
658	#endif
659	}
660
661
662	/**
663	* Create session.
664	*
665	* @returns IPRT status code.
666	* @param pDevExt Device extension.
667	* @param fUser Flag indicating whether this is a user or kernel
668	* session.
669	* @param fUnrestricted Unrestricted access (system) or restricted access
670	* (user)?
671	* @param ppSession Where to store the pointer to the session data.
672	*/
673	int VBOXCALL supdrvCreateSession(PSUPDRVDEVEXT pDevExt, bool fUser, bool fUnrestricted, PSUPDRVSESSION *ppSession)
674	{
675	int rc;
676	PSUPDRVSESSION pSession;
677
678	if (!SUP_IS_DEVEXT_VALID(pDevExt))
679	return VERR_INVALID_PARAMETER;
680
681	/*
682	* Allocate memory for the session data.
683	*/
684	pSession = *ppSession = (PSUPDRVSESSION)RTMemAllocZ(pDevExt->cbSession);
685	if (pSession)
686	{
687	/* Initialize session data. */
688	rc = RTSpinlockCreate(&pSession->Spinlock, RTSPINLOCK_FLAGS_INTERRUPT_UNSAFE, "SUPDrvSession");
689	if (!rc)
690	{
691	rc = RTHandleTableCreateEx(&pSession->hHandleTable,
692	RTHANDLETABLE_FLAGS_LOCKED_IRQ_SAFE \| RTHANDLETABLE_FLAGS_CONTEXT,
693	1 /uBase/, 32768 /cMax/, supdrvSessionObjHandleRetain, pSession);
694	if (RT_SUCCESS(rc))
695	{
696	Assert(pSession->Spinlock != NIL_RTSPINLOCK);
697	pSession->pDevExt = pDevExt;
698	pSession->u32Cookie = BIRD_INV;
699	pSession->fUnrestricted = fUnrestricted;
700	pSession->cRefs = 1;
701	/*pSession->pLdrUsage = NULL;
702	pSession->pVM = NULL;
703	pSession->pUsage = NULL;
704	pSession->pGip = NULL;
705	pSession->fGipReferenced = false;
706	pSession->Bundle.cUsed = 0; */
707	pSession->Uid = NIL_RTUID;
708	pSession->Gid = NIL_RTGID;
709	if (fUser)
710	{
711	pSession->Process = RTProcSelf();
712	pSession->R0Process = RTR0ProcHandleSelf();
713	}
714	else
715	{
716	pSession->Process = NIL_RTPROCESS;
717	pSession->R0Process = NIL_RTR0PROCESS;
718	}
719	/pSession->uTracerData = 0;/
720	pSession->hTracerCaller = NIL_RTNATIVETHREAD;
721	RTListInit(&pSession->TpProviders);
722	/pSession->cTpProviders = 0;/
723	/pSession->cTpProbesFiring = 0;/
724	RTListInit(&pSession->TpUmods);
725	/RT_ZERO(pSession->apTpLookupTable);/
726
727	VBOXDRV_SESSION_CREATE(pSession, fUser);
728	LogFlow(("Created session %p initial cookie=%#x\n", pSession, pSession->u32Cookie));
729	return VINF_SUCCESS;
730	}
731
732	RTSpinlockDestroy(pSession->Spinlock);
733	}
734	RTMemFree(pSession);
735	*ppSession = NULL;
736	Log(("Failed to create spinlock, rc=%d!\n", rc));
737	}
738	else
739	rc = VERR_NO_MEMORY;
740
741	return rc;
742	}
743
744
745	/**
746	* Shared code for cleaning up a session (but not quite freeing it).
747	*
748	* This is primarily intended for MAC OS X where we have to clean up the memory
749	* stuff before the file handle is closed.
750	*
751	* @param pDevExt Device extension.
752	* @param pSession Session data.
753	* This data will be freed by this routine.
754	*/
755	static void supdrvCleanupSession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession)
756	{
757	int rc;
758	PSUPDRVBUNDLE pBundle;
759	LogFlow(("supdrvCleanupSession: pSession=%p\n", pSession));
760
761	/*
762	* Remove logger instances related to this session.
763	*/
764	RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pSession);
765
766	/*
767	* Destroy the handle table.
768	*/
769	rc = RTHandleTableDestroy(pSession->hHandleTable, supdrvSessionObjHandleDelete, pSession);
770	AssertRC(rc);
771	pSession->hHandleTable = NIL_RTHANDLETABLE;
772
773	/*
774	* Release object references made in this session.
775	* In theory there should be noone racing us in this session.
776	*/
777	Log2(("release objects - start\n"));
778	if (pSession->pUsage)
779	{
780	PSUPDRVUSAGE pUsage;
781	RTSpinlockAcquire(pDevExt->Spinlock);
782
783	while ((pUsage = pSession->pUsage) != NULL)
784	{
785	PSUPDRVOBJ pObj = pUsage->pObj;
786	pSession->pUsage = pUsage->pNext;
787
788	AssertMsg(pUsage->cUsage >= 1 && pObj->cUsage >= pUsage->cUsage, ("glob %d; sess %d\n", pObj->cUsage, pUsage->cUsage));
789	if (pUsage->cUsage < pObj->cUsage)
790	{
791	pObj->cUsage -= pUsage->cUsage;
792	RTSpinlockRelease(pDevExt->Spinlock);
793	}
794	else
795	{
796	/* Destroy the object and free the record. */
797	if (pDevExt->pObjs == pObj)
798	pDevExt->pObjs = pObj->pNext;
799	else
800	{
801	PSUPDRVOBJ pObjPrev;
802	for (pObjPrev = pDevExt->pObjs; pObjPrev; pObjPrev = pObjPrev->pNext)
803	if (pObjPrev->pNext == pObj)
804	{
805	pObjPrev->pNext = pObj->pNext;
806	break;
807	}
808	Assert(pObjPrev);
809	}
810	RTSpinlockRelease(pDevExt->Spinlock);
811
812	Log(("supdrvCleanupSession: destroying %p/%d (%p/%p) cpid=%RTproc pid=%RTproc dtor=%p\n",
813	pObj, pObj->enmType, pObj->pvUser1, pObj->pvUser2, pObj->CreatorProcess, RTProcSelf(), pObj->pfnDestructor));
814	if (pObj->pfnDestructor)
815	pObj->pfnDestructor(pObj, pObj->pvUser1, pObj->pvUser2);
816	RTMemFree(pObj);
817	}
818
819	/* free it and continue. */
820	RTMemFree(pUsage);
821
822	RTSpinlockAcquire(pDevExt->Spinlock);
823	}
824
825	RTSpinlockRelease(pDevExt->Spinlock);
826	AssertMsg(!pSession->pUsage, ("Some buster reregistered an object during desturction!\n"));
827	}
828	Log2(("release objects - done\n"));
829
830	/*
831	* Do tracer cleanups related to this session.
832	*/
833	Log2(("release tracer stuff - start\n"));
834	supdrvTracerCleanupSession(pDevExt, pSession);
835	Log2(("release tracer stuff - end\n"));
836
837	/*
838	* Release memory allocated in the session.
839	*
840	* We do not serialize this as we assume that the application will
841	* not allocated memory while closing the file handle object.
842	*/
843	Log2(("freeing memory:\n"));
844	pBundle = &pSession->Bundle;
845	while (pBundle)
846	{
847	PSUPDRVBUNDLE pToFree;
848	unsigned i;
849
850	/*
851	* Check and unlock all entries in the bundle.
852	*/
853	for (i = 0; i < RT_ELEMENTS(pBundle->aMem); i++)
854	{
855	if (pBundle->aMem[i].MemObj != NIL_RTR0MEMOBJ)
856	{
857	Log2(("eType=%d pvR0=%p pvR3=%p cb=%ld\n", pBundle->aMem[i].eType, RTR0MemObjAddress(pBundle->aMem[i].MemObj),
858	(void *)RTR0MemObjAddressR3(pBundle->aMem[i].MapObjR3), (long)RTR0MemObjSize(pBundle->aMem[i].MemObj)));
859	if (pBundle->aMem[i].MapObjR3 != NIL_RTR0MEMOBJ)
860	{
861	rc = RTR0MemObjFree(pBundle->aMem[i].MapObjR3, false);
862	AssertRC(rc); /** @todo figure out how to handle this. */
863	pBundle->aMem[i].MapObjR3 = NIL_RTR0MEMOBJ;
864	}
865	rc = RTR0MemObjFree(pBundle->aMem[i].MemObj, true /* fFreeMappings */);
866	AssertRC(rc); /** @todo figure out how to handle this. */
867	pBundle->aMem[i].MemObj = NIL_RTR0MEMOBJ;
868	pBundle->aMem[i].eType = MEMREF_TYPE_UNUSED;
869	}
870	}
871
872	/*
873	* Advance and free previous bundle.
874	*/
875	pToFree = pBundle;
876	pBundle = pBundle->pNext;
877
878	pToFree->pNext = NULL;
879	pToFree->cUsed = 0;
880	if (pToFree != &pSession->Bundle)
881	RTMemFree(pToFree);
882	}
883	Log2(("freeing memory - done\n"));
884
885	/*
886	* Deregister component factories.
887	*/
888	RTSemFastMutexRequest(pDevExt->mtxComponentFactory);
889	Log2(("deregistering component factories:\n"));
890	if (pDevExt->pComponentFactoryHead)
891	{
892	PSUPDRVFACTORYREG pPrev = NULL;
893	PSUPDRVFACTORYREG pCur = pDevExt->pComponentFactoryHead;
894	while (pCur)
895	{
896	if (pCur->pSession == pSession)
897	{
898	/* unlink it */
899	PSUPDRVFACTORYREG pNext = pCur->pNext;
900	if (pPrev)
901	pPrev->pNext = pNext;
902	else
903	pDevExt->pComponentFactoryHead = pNext;
904
905	/* free it */
906	pCur->pNext = NULL;
907	pCur->pSession = NULL;
908	pCur->pFactory = NULL;
909	RTMemFree(pCur);
910
911	/* next */
912	pCur = pNext;
913	}
914	else
915	{
916	/* next */
917	pPrev = pCur;
918	pCur = pCur->pNext;
919	}
920	}
921	}
922	RTSemFastMutexRelease(pDevExt->mtxComponentFactory);
923	Log2(("deregistering component factories - done\n"));
924
925	/*
926	* Loaded images needs to be dereferenced and possibly freed up.
927	*/
928	supdrvLdrLock(pDevExt);
929	Log2(("freeing images:\n"));
930	if (pSession->pLdrUsage)
931	{
932	PSUPDRVLDRUSAGE pUsage = pSession->pLdrUsage;
933	pSession->pLdrUsage = NULL;
934	while (pUsage)
935	{
936	void *pvFree = pUsage;
937	PSUPDRVLDRIMAGE pImage = pUsage->pImage;
938	if (pImage->cUsage > pUsage->cUsage)
939	pImage->cUsage -= pUsage->cUsage;
940	else
941	supdrvLdrFree(pDevExt, pImage);
942	pUsage->pImage = NULL;
943	pUsage = pUsage->pNext;
944	RTMemFree(pvFree);
945	}
946	}
947	supdrvLdrUnlock(pDevExt);
948	Log2(("freeing images - done\n"));
949
950	/*
951	* Unmap the GIP.
952	*/
953	Log2(("umapping GIP:\n"));
954	if (pSession->GipMapObjR3 != NIL_RTR0MEMOBJ)
955	{
956	SUPR0GipUnmap(pSession);
957	pSession->fGipReferenced = 0;
958	}
959	Log2(("umapping GIP - done\n"));
960	}
961
962
963	/**
964	* Shared code for cleaning up a session.
965	*
966	* @param pDevExt Device extension.
967	* @param pSession Session data.
968	* This data will be freed by this routine.
969	*/
970	static void supdrvCloseSession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession)
971	{
972	VBOXDRV_SESSION_CLOSE(pSession);
973
974	/*
975	* Cleanup the session first.
976	*/
977	supdrvCleanupSession(pDevExt, pSession);
978
979	/*
980	* Free the rest of the session stuff.
981	*/
982	RTSpinlockDestroy(pSession->Spinlock);
983	pSession->Spinlock = NIL_RTSPINLOCK;
984	pSession->pDevExt = NULL;
985	RTMemFree(pSession);
986	LogFlow(("supdrvCloseSession: returns\n"));
987	}
988
989
990	/**
991	* Retain a session to make sure it doesn't go away while it is in use.
992	*
993	* @returns New reference count on success, UINT32_MAX on failure.
994	* @param pSession Session data.
995	*/
996	uint32_t VBOXCALL supdrvSessionRetain(PSUPDRVSESSION pSession)
997	{
998	uint32_t cRefs;
999	AssertPtrReturn(pSession, UINT32_MAX);
1000	AssertReturn(SUP_IS_SESSION_VALID(pSession), UINT32_MAX);
1001
1002	cRefs = ASMAtomicIncU32(&pSession->cRefs);
1003	AssertMsg(cRefs > 1 && cRefs < _1M, ("%#x %p\n", cRefs, pSession));
1004	return cRefs;
1005	}
1006
1007
1008	/**
1009	* Releases a given session.
1010	*
1011	* @returns New reference count on success (0 if closed), UINT32_MAX on failure.
1012	* @param pSession Session data.
1013	*/
1014	uint32_t VBOXCALL supdrvSessionRelease(PSUPDRVSESSION pSession)
1015	{
1016	uint32_t cRefs;
1017	AssertPtrReturn(pSession, UINT32_MAX);
1018	AssertReturn(SUP_IS_SESSION_VALID(pSession), UINT32_MAX);
1019
1020	cRefs = ASMAtomicDecU32(&pSession->cRefs);
1021	AssertMsg(cRefs < _1M, ("%#x %p\n", cRefs, pSession));
1022	if (cRefs == 0)
1023	supdrvCloseSession(pSession->pDevExt, pSession);
1024	return cRefs;
1025	}
1026
1027
1028	/**
1029	* RTHandleTableDestroy callback used by supdrvCleanupSession.
1030	*
1031	* @returns IPRT status code, see SUPR0ObjAddRef.
1032	* @param hHandleTable The handle table handle. Ignored.
1033	* @param pvObj The object pointer.
1034	* @param pvCtx Context, the handle type. Ignored.
1035	* @param pvUser Session pointer.
1036	*/
1037	static DECLCALLBACK(int) supdrvSessionObjHandleRetain(RTHANDLETABLE hHandleTable, void pvObj, void pvCtx, void *pvUser)
1038	{
1039	NOREF(pvCtx);
1040	NOREF(hHandleTable);
1041	return SUPR0ObjAddRefEx(pvObj, (PSUPDRVSESSION)pvUser, true /fNoBlocking/);
1042	}
1043
1044
1045	/**
1046	* RTHandleTableDestroy callback used by supdrvCleanupSession.
1047	*
1048	* @param hHandleTable The handle table handle. Ignored.
1049	* @param h The handle value. Ignored.
1050	* @param pvObj The object pointer.
1051	* @param pvCtx Context, the handle type. Ignored.
1052	* @param pvUser Session pointer.
1053	*/
1054	static DECLCALLBACK(void) supdrvSessionObjHandleDelete(RTHANDLETABLE hHandleTable, uint32_t h, void pvObj, void pvCtx, void *pvUser)
1055	{
1056	NOREF(pvCtx);
1057	NOREF(h);
1058	NOREF(hHandleTable);
1059	SUPR0ObjRelease(pvObj, (PSUPDRVSESSION)pvUser);
1060	}
1061
1062
1063	/**
1064	* Fast path I/O Control worker.
1065	*
1066	* @returns VBox status code that should be passed down to ring-3 unchanged.
1067	* @param uIOCtl Function number.
1068	* @param idCpu VMCPU id.
1069	* @param pDevExt Device extention.
1070	* @param pSession Session data.
1071	*/
1072	int VBOXCALL supdrvIOCtlFast(uintptr_t uIOCtl, VMCPUID idCpu, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession)
1073	{
1074	/*
1075	* We check the two prereqs after doing this only to allow the compiler to optimize things better.
1076	*/
1077	if (RT_LIKELY( RT_VALID_PTR(pSession)
1078	&& pSession->pVM
1079	&& pDevExt->pfnVMMR0EntryFast))
1080	{
1081	switch (uIOCtl)
1082	{
1083	case SUP_IOCTL_FAST_DO_RAW_RUN:
1084	pDevExt->pfnVMMR0EntryFast(pSession->pVM, idCpu, SUP_VMMR0_DO_RAW_RUN);
1085	break;
1086	case SUP_IOCTL_FAST_DO_HM_RUN:
1087	pDevExt->pfnVMMR0EntryFast(pSession->pVM, idCpu, SUP_VMMR0_DO_HM_RUN);
1088	break;
1089	case SUP_IOCTL_FAST_DO_NOP:
1090	pDevExt->pfnVMMR0EntryFast(pSession->pVM, idCpu, SUP_VMMR0_DO_NOP);
1091	break;
1092	default:
1093	return VERR_INTERNAL_ERROR;
1094	}
1095	return VINF_SUCCESS;
1096	}
1097	return VERR_INTERNAL_ERROR;
1098	}
1099
1100
1101	/**
1102	* Helper for supdrvIOCtl. Check if pszStr contains any character of pszChars.
1103	* We would use strpbrk here if this function would be contained in the RedHat kABI white
1104	* list, see http://www.kerneldrivers.org/RHEL5.
1105	*
1106	* @returns 1 if pszStr does contain any character of pszChars, 0 otherwise.
1107	* @param pszStr String to check
1108	* @param pszChars Character set
1109	*/
1110	static int supdrvCheckInvalidChar(const char pszStr, const char pszChars)
1111	{
1112	int chCur;
1113	while ((chCur = *pszStr++) != '\0')
1114	{
1115	int ch;
1116	const char *psz = pszChars;
1117	while ((ch = *psz++) != '\0')
1118	if (ch == chCur)
1119	return 1;
1120
1121	}
1122	return 0;
1123	}
1124
1125
1126
1127	/**
1128	* I/O Control inner worker (tracing reasons).
1129	*
1130	* @returns IPRT status code.
1131	* @retval VERR_INVALID_PARAMETER if the request is invalid.
1132	*
1133	* @param uIOCtl Function number.
1134	* @param pDevExt Device extention.
1135	* @param pSession Session data.
1136	* @param pReqHdr The request header.
1137	*/
1138	static int supdrvIOCtlInnerUnrestricted(uintptr_t uIOCtl, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPREQHDR pReqHdr)
1139	{
1140	/*
1141	* Validation macros
1142	*/
1143	#define REQ_CHECK_SIZES_EX(Name, cbInExpect, cbOutExpect) \
1144	do { \
1145	if (RT_UNLIKELY(pReqHdr->cbIn != (cbInExpect) \|\| pReqHdr->cbOut != (cbOutExpect))) \
1146	{ \
1147	OSDBGPRINT(( #Name ": Invalid input/output sizes. cbIn=%ld expected %ld. cbOut=%ld expected %ld.\n", \
1148	(long)pReqHdr->cbIn, (long)(cbInExpect), (long)pReqHdr->cbOut, (long)(cbOutExpect))); \
1149	return pReqHdr->rc = VERR_INVALID_PARAMETER; \
1150	} \
1151	} while (0)
1152
1153	#define REQ_CHECK_SIZES(Name) REQ_CHECK_SIZES_EX(Name, Name ## _SIZE_IN, Name ## _SIZE_OUT)
1154
1155	#define REQ_CHECK_SIZE_IN(Name, cbInExpect) \
1156	do { \
1157	if (RT_UNLIKELY(pReqHdr->cbIn != (cbInExpect))) \
1158	{ \
1159	OSDBGPRINT(( #Name ": Invalid input/output sizes. cbIn=%ld expected %ld.\n", \
1160	(long)pReqHdr->cbIn, (long)(cbInExpect))); \
1161	return pReqHdr->rc = VERR_INVALID_PARAMETER; \
1162	} \
1163	} while (0)
1164
1165	#define REQ_CHECK_SIZE_OUT(Name, cbOutExpect) \
1166	do { \
1167	if (RT_UNLIKELY(pReqHdr->cbOut != (cbOutExpect))) \
1168	{ \
1169	OSDBGPRINT(( #Name ": Invalid input/output sizes. cbOut=%ld expected %ld.\n", \
1170	(long)pReqHdr->cbOut, (long)(cbOutExpect))); \
1171	return pReqHdr->rc = VERR_INVALID_PARAMETER; \
1172	} \
1173	} while (0)
1174
1175	#define REQ_CHECK_EXPR(Name, expr) \
1176	do { \
1177	if (RT_UNLIKELY(!(expr))) \
1178	{ \
1179	OSDBGPRINT(( #Name ": %s\n", #expr)); \
1180	return pReqHdr->rc = VERR_INVALID_PARAMETER; \
1181	} \
1182	} while (0)
1183
1184	#define REQ_CHECK_EXPR_FMT(expr, fmt) \
1185	do { \
1186	if (RT_UNLIKELY(!(expr))) \
1187	{ \
1188	OSDBGPRINT( fmt ); \
1189	return pReqHdr->rc = VERR_INVALID_PARAMETER; \
1190	} \
1191	} while (0)
1192
1193	/*
1194	* The switch.
1195	*/
1196	switch (SUP_CTL_CODE_NO_SIZE(uIOCtl))
1197	{
1198	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_COOKIE):
1199	{
1200	PSUPCOOKIE pReq = (PSUPCOOKIE)pReqHdr;
1201	REQ_CHECK_SIZES(SUP_IOCTL_COOKIE);
1202	if (strncmp(pReq->u.In.szMagic, SUPCOOKIE_MAGIC, sizeof(pReq->u.In.szMagic)))
1203	{
1204	OSDBGPRINT(("SUP_IOCTL_COOKIE: invalid magic %.16s\n", pReq->u.In.szMagic));
1205	pReq->Hdr.rc = VERR_INVALID_MAGIC;
1206	return 0;
1207	}
1208
1209	#if 0
1210	/*
1211	* Call out to the OS specific code and let it do permission checks on the
1212	* client process.
1213	*/
1214	if (!supdrvOSValidateClientProcess(pDevExt, pSession))
1215	{
1216	pReq->u.Out.u32Cookie = 0xffffffff;
1217	pReq->u.Out.u32SessionCookie = 0xffffffff;
1218	pReq->u.Out.u32SessionVersion = 0xffffffff;
1219	pReq->u.Out.u32DriverVersion = SUPDRV_IOC_VERSION;
1220	pReq->u.Out.pSession = NULL;
1221	pReq->u.Out.cFunctions = 0;
1222	pReq->Hdr.rc = VERR_PERMISSION_DENIED;
1223	return 0;
1224	}
1225	#endif
1226
1227	/*
1228	* Match the version.
1229	* The current logic is very simple, match the major interface version.
1230	*/
1231	if ( pReq->u.In.u32MinVersion > SUPDRV_IOC_VERSION
1232	\|\| (pReq->u.In.u32MinVersion & 0xffff0000) != (SUPDRV_IOC_VERSION & 0xffff0000))
1233	{
1234	OSDBGPRINT(("SUP_IOCTL_COOKIE: Version mismatch. Requested: %#x Min: %#x Current: %#x\n",
1235	pReq->u.In.u32ReqVersion, pReq->u.In.u32MinVersion, SUPDRV_IOC_VERSION));
1236	pReq->u.Out.u32Cookie = 0xffffffff;
1237	pReq->u.Out.u32SessionCookie = 0xffffffff;
1238	pReq->u.Out.u32SessionVersion = 0xffffffff;
1239	pReq->u.Out.u32DriverVersion = SUPDRV_IOC_VERSION;
1240	pReq->u.Out.pSession = NULL;
1241	pReq->u.Out.cFunctions = 0;
1242	pReq->Hdr.rc = VERR_VERSION_MISMATCH;
1243	return 0;
1244	}
1245
1246	/*
1247	* Fill in return data and be gone.
1248	* N.B. The first one to change SUPDRV_IOC_VERSION shall makes sure that
1249	* u32SessionVersion <= u32ReqVersion!
1250	*/
1251	/** @todo Somehow validate the client and negotiate a secure cookie... */
1252	pReq->u.Out.u32Cookie = pDevExt->u32Cookie;
1253	pReq->u.Out.u32SessionCookie = pSession->u32Cookie;
1254	pReq->u.Out.u32SessionVersion = SUPDRV_IOC_VERSION;
1255	pReq->u.Out.u32DriverVersion = SUPDRV_IOC_VERSION;
1256	pReq->u.Out.pSession = pSession;
1257	pReq->u.Out.cFunctions = sizeof(g_aFunctions) / sizeof(g_aFunctions[0]);
1258	pReq->Hdr.rc = VINF_SUCCESS;
1259	return 0;
1260	}
1261
1262	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_QUERY_FUNCS(0)):
1263	{
1264	/* validate */
1265	PSUPQUERYFUNCS pReq = (PSUPQUERYFUNCS)pReqHdr;
1266	REQ_CHECK_SIZES_EX(SUP_IOCTL_QUERY_FUNCS, SUP_IOCTL_QUERY_FUNCS_SIZE_IN, SUP_IOCTL_QUERY_FUNCS_SIZE_OUT(RT_ELEMENTS(g_aFunctions)));
1267
1268	/* execute */
1269	pReq->u.Out.cFunctions = RT_ELEMENTS(g_aFunctions);
1270	memcpy(&pReq->u.Out.aFunctions[0], g_aFunctions, sizeof(g_aFunctions));
1271	pReq->Hdr.rc = VINF_SUCCESS;
1272	return 0;
1273	}
1274
1275	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_PAGE_LOCK):
1276	{
1277	/* validate */
1278	PSUPPAGELOCK pReq = (PSUPPAGELOCK)pReqHdr;
1279	REQ_CHECK_SIZE_IN(SUP_IOCTL_PAGE_LOCK, SUP_IOCTL_PAGE_LOCK_SIZE_IN);
1280	REQ_CHECK_SIZE_OUT(SUP_IOCTL_PAGE_LOCK, SUP_IOCTL_PAGE_LOCK_SIZE_OUT(pReq->u.In.cPages));
1281	REQ_CHECK_EXPR(SUP_IOCTL_PAGE_LOCK, pReq->u.In.cPages > 0);
1282	REQ_CHECK_EXPR(SUP_IOCTL_PAGE_LOCK, pReq->u.In.pvR3 >= PAGE_SIZE);
1283
1284	/* execute */
1285	pReq->Hdr.rc = SUPR0LockMem(pSession, pReq->u.In.pvR3, pReq->u.In.cPages, &pReq->u.Out.aPages[0]);
1286	if (RT_FAILURE(pReq->Hdr.rc))
1287	pReq->Hdr.cbOut = sizeof(pReq->Hdr);
1288	return 0;
1289	}
1290
1291	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_PAGE_UNLOCK):
1292	{
1293	/* validate */
1294	PSUPPAGEUNLOCK pReq = (PSUPPAGEUNLOCK)pReqHdr;
1295	REQ_CHECK_SIZES(SUP_IOCTL_PAGE_UNLOCK);
1296
1297	/* execute */
1298	pReq->Hdr.rc = SUPR0UnlockMem(pSession, pReq->u.In.pvR3);
1299	return 0;
1300	}
1301
1302	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_CONT_ALLOC):
1303	{
1304	/* validate */
1305	PSUPCONTALLOC pReq = (PSUPCONTALLOC)pReqHdr;
1306	REQ_CHECK_SIZES(SUP_IOCTL_CONT_ALLOC);
1307
1308	/* execute */
1309	pReq->Hdr.rc = SUPR0ContAlloc(pSession, pReq->u.In.cPages, &pReq->u.Out.pvR0, &pReq->u.Out.pvR3, &pReq->u.Out.HCPhys);
1310	if (RT_FAILURE(pReq->Hdr.rc))
1311	pReq->Hdr.cbOut = sizeof(pReq->Hdr);
1312	return 0;
1313	}
1314
1315	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_CONT_FREE):
1316	{
1317	/* validate */
1318	PSUPCONTFREE pReq = (PSUPCONTFREE)pReqHdr;
1319	REQ_CHECK_SIZES(SUP_IOCTL_CONT_FREE);
1320
1321	/* execute */
1322	pReq->Hdr.rc = SUPR0ContFree(pSession, (RTHCUINTPTR)pReq->u.In.pvR3);
1323	return 0;
1324	}
1325
1326	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LDR_OPEN):
1327	{
1328	/* validate */
1329	PSUPLDROPEN pReq = (PSUPLDROPEN)pReqHdr;
1330	REQ_CHECK_SIZES(SUP_IOCTL_LDR_OPEN);
1331	REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, pReq->u.In.cbImageWithTabs > 0);
1332	REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, pReq->u.In.cbImageWithTabs < 16*_1M);
1333	REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, pReq->u.In.cbImageBits > 0);
1334	REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, pReq->u.In.cbImageBits > 0);
1335	REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, pReq->u.In.cbImageBits < pReq->u.In.cbImageWithTabs);
1336	REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, pReq->u.In.szName[0]);
1337	REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, RTStrEnd(pReq->u.In.szName, sizeof(pReq->u.In.szName)));
1338	REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, !supdrvCheckInvalidChar(pReq->u.In.szName, ";:()[]{}/\\\|&*%#@!~`\"'"));
1339	REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, RTStrEnd(pReq->u.In.szFilename, sizeof(pReq->u.In.szFilename)));
1340
1341	/* execute */
1342	pReq->Hdr.rc = supdrvIOCtl_LdrOpen(pDevExt, pSession, pReq);
1343	return 0;
1344	}
1345
1346	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LDR_LOAD):
1347	{
1348	/* validate */
1349	PSUPLDRLOAD pReq = (PSUPLDRLOAD)pReqHdr;
1350	REQ_CHECK_EXPR(Name, pReq->Hdr.cbIn >= sizeof(*pReq));
1351	REQ_CHECK_SIZES_EX(SUP_IOCTL_LDR_LOAD, SUP_IOCTL_LDR_LOAD_SIZE_IN(pReq->u.In.cbImageWithTabs), SUP_IOCTL_LDR_LOAD_SIZE_OUT);
1352	REQ_CHECK_EXPR(SUP_IOCTL_LDR_LOAD, pReq->u.In.cSymbols <= 16384);
1353	REQ_CHECK_EXPR_FMT( !pReq->u.In.cSymbols
1354	\|\| ( pReq->u.In.offSymbols < pReq->u.In.cbImageWithTabs
1355	&& pReq->u.In.offSymbols + pReq->u.In.cSymbols * sizeof(SUPLDRSYM) <= pReq->u.In.cbImageWithTabs),
1356	("SUP_IOCTL_LDR_LOAD: offSymbols=%#lx cSymbols=%#lx cbImageWithTabs=%#lx\n", (long)pReq->u.In.offSymbols,
1357	(long)pReq->u.In.cSymbols, (long)pReq->u.In.cbImageWithTabs));
1358	REQ_CHECK_EXPR_FMT( !pReq->u.In.cbStrTab
1359	\|\| ( pReq->u.In.offStrTab < pReq->u.In.cbImageWithTabs
1360	&& pReq->u.In.offStrTab + pReq->u.In.cbStrTab <= pReq->u.In.cbImageWithTabs
1361	&& pReq->u.In.cbStrTab <= pReq->u.In.cbImageWithTabs),
1362	("SUP_IOCTL_LDR_LOAD: offStrTab=%#lx cbStrTab=%#lx cbImageWithTabs=%#lx\n", (long)pReq->u.In.offStrTab,
1363	(long)pReq->u.In.cbStrTab, (long)pReq->u.In.cbImageWithTabs));
1364
1365	if (pReq->u.In.cSymbols)
1366	{
1367	uint32_t i;
1368	PSUPLDRSYM paSyms = (PSUPLDRSYM)&pReq->u.In.abImage[pReq->u.In.offSymbols];
1369	for (i = 0; i < pReq->u.In.cSymbols; i++)
1370	{
1371	REQ_CHECK_EXPR_FMT(paSyms[i].offSymbol < pReq->u.In.cbImageWithTabs,
1372	("SUP_IOCTL_LDR_LOAD: sym #%ld: symb off %#lx (max=%#lx)\n", (long)i, (long)paSyms[i].offSymbol, (long)pReq->u.In.cbImageWithTabs));
1373	REQ_CHECK_EXPR_FMT(paSyms[i].offName < pReq->u.In.cbStrTab,
1374	("SUP_IOCTL_LDR_LOAD: sym #%ld: name off %#lx (max=%#lx)\n", (long)i, (long)paSyms[i].offName, (long)pReq->u.In.cbImageWithTabs));
1375	REQ_CHECK_EXPR_FMT(RTStrEnd((char const *)&pReq->u.In.abImage[pReq->u.In.offStrTab + paSyms[i].offName],
1376	pReq->u.In.cbStrTab - paSyms[i].offName),
1377	("SUP_IOCTL_LDR_LOAD: sym #%ld: unterminated name! (%#lx / %#lx)\n", (long)i, (long)paSyms[i].offName, (long)pReq->u.In.cbImageWithTabs));
1378	}
1379	}
1380
1381	/* execute */
1382	pReq->Hdr.rc = supdrvIOCtl_LdrLoad(pDevExt, pSession, pReq);
1383	return 0;
1384	}
1385
1386	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LDR_FREE):
1387	{
1388	/* validate */
1389	PSUPLDRFREE pReq = (PSUPLDRFREE)pReqHdr;
1390	REQ_CHECK_SIZES(SUP_IOCTL_LDR_FREE);
1391
1392	/* execute */
1393	pReq->Hdr.rc = supdrvIOCtl_LdrFree(pDevExt, pSession, pReq);
1394	return 0;
1395	}
1396
1397	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LDR_GET_SYMBOL):
1398	{
1399	/* validate */
1400	PSUPLDRGETSYMBOL pReq = (PSUPLDRGETSYMBOL)pReqHdr;
1401	REQ_CHECK_SIZES(SUP_IOCTL_LDR_GET_SYMBOL);
1402	REQ_CHECK_EXPR(SUP_IOCTL_LDR_GET_SYMBOL, RTStrEnd(pReq->u.In.szSymbol, sizeof(pReq->u.In.szSymbol)));
1403
1404	/* execute */
1405	pReq->Hdr.rc = supdrvIOCtl_LdrGetSymbol(pDevExt, pSession, pReq);
1406	return 0;
1407	}
1408
1409	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_CALL_VMMR0(0)):
1410	{
1411	/* validate */
1412	PSUPCALLVMMR0 pReq = (PSUPCALLVMMR0)pReqHdr;
1413	Log4(("SUP_IOCTL_CALL_VMMR0: op=%u in=%u arg=%RX64 p/t=%RTproc/%RTthrd\n",
1414	pReq->u.In.uOperation, pReq->Hdr.cbIn, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf()));
1415
1416	if (pReq->Hdr.cbIn == SUP_IOCTL_CALL_VMMR0_SIZE(0))
1417	{
1418	REQ_CHECK_SIZES_EX(SUP_IOCTL_CALL_VMMR0, SUP_IOCTL_CALL_VMMR0_SIZE_IN(0), SUP_IOCTL_CALL_VMMR0_SIZE_OUT(0));
1419
1420	/* execute */
1421	if (RT_LIKELY(pDevExt->pfnVMMR0EntryEx))
1422	pReq->Hdr.rc = pDevExt->pfnVMMR0EntryEx(pReq->u.In.pVMR0, pReq->u.In.idCpu, pReq->u.In.uOperation, NULL, pReq->u.In.u64Arg, pSession);
1423	else
1424	pReq->Hdr.rc = VERR_WRONG_ORDER;
1425	}
1426	else
1427	{
1428	PSUPVMMR0REQHDR pVMMReq = (PSUPVMMR0REQHDR)&pReq->abReqPkt[0];
1429	REQ_CHECK_EXPR_FMT(pReq->Hdr.cbIn >= SUP_IOCTL_CALL_VMMR0_SIZE(sizeof(SUPVMMR0REQHDR)),
1430	("SUP_IOCTL_CALL_VMMR0: cbIn=%#x < %#lx\n", pReq->Hdr.cbIn, SUP_IOCTL_CALL_VMMR0_SIZE(sizeof(SUPVMMR0REQHDR))));
1431	REQ_CHECK_EXPR(SUP_IOCTL_CALL_VMMR0, pVMMReq->u32Magic == SUPVMMR0REQHDR_MAGIC);
1432	REQ_CHECK_SIZES_EX(SUP_IOCTL_CALL_VMMR0, SUP_IOCTL_CALL_VMMR0_SIZE_IN(pVMMReq->cbReq), SUP_IOCTL_CALL_VMMR0_SIZE_OUT(pVMMReq->cbReq));
1433
1434	/* execute */
1435	if (RT_LIKELY(pDevExt->pfnVMMR0EntryEx))
1436	pReq->Hdr.rc = pDevExt->pfnVMMR0EntryEx(pReq->u.In.pVMR0, pReq->u.In.idCpu, pReq->u.In.uOperation, pVMMReq, pReq->u.In.u64Arg, pSession);
1437	else
1438	pReq->Hdr.rc = VERR_WRONG_ORDER;
1439	}
1440
1441	if ( RT_FAILURE(pReq->Hdr.rc)
1442	&& pReq->Hdr.rc != VERR_INTERRUPTED
1443	&& pReq->Hdr.rc != VERR_TIMEOUT)
1444	Log(("SUP_IOCTL_CALL_VMMR0: rc=%Rrc op=%u out=%u arg=%RX64 p/t=%RTproc/%RTthrd\n",
1445	pReq->Hdr.rc, pReq->u.In.uOperation, pReq->Hdr.cbOut, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf()));
1446	else
1447	Log4(("SUP_IOCTL_CALL_VMMR0: rc=%Rrc op=%u out=%u arg=%RX64 p/t=%RTproc/%RTthrd\n",
1448	pReq->Hdr.rc, pReq->u.In.uOperation, pReq->Hdr.cbOut, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf()));
1449	return 0;
1450	}
1451
1452	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_CALL_VMMR0_BIG):
1453	{
1454	/* validate */
1455	PSUPCALLVMMR0 pReq = (PSUPCALLVMMR0)pReqHdr;
1456	PSUPVMMR0REQHDR pVMMReq;
1457	Log4(("SUP_IOCTL_CALL_VMMR0_BIG: op=%u in=%u arg=%RX64 p/t=%RTproc/%RTthrd\n",
1458	pReq->u.In.uOperation, pReq->Hdr.cbIn, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf()));
1459
1460	pVMMReq = (PSUPVMMR0REQHDR)&pReq->abReqPkt[0];
1461	REQ_CHECK_EXPR_FMT(pReq->Hdr.cbIn >= SUP_IOCTL_CALL_VMMR0_BIG_SIZE(sizeof(SUPVMMR0REQHDR)),
1462	("SUP_IOCTL_CALL_VMMR0_BIG: cbIn=%#x < %#lx\n", pReq->Hdr.cbIn, SUP_IOCTL_CALL_VMMR0_BIG_SIZE(sizeof(SUPVMMR0REQHDR))));
1463	REQ_CHECK_EXPR(SUP_IOCTL_CALL_VMMR0_BIG, pVMMReq->u32Magic == SUPVMMR0REQHDR_MAGIC);
1464	REQ_CHECK_SIZES_EX(SUP_IOCTL_CALL_VMMR0_BIG, SUP_IOCTL_CALL_VMMR0_BIG_SIZE_IN(pVMMReq->cbReq), SUP_IOCTL_CALL_VMMR0_BIG_SIZE_OUT(pVMMReq->cbReq));
1465
1466	/* execute */
1467	if (RT_LIKELY(pDevExt->pfnVMMR0EntryEx))
1468	pReq->Hdr.rc = pDevExt->pfnVMMR0EntryEx(pReq->u.In.pVMR0, pReq->u.In.idCpu, pReq->u.In.uOperation, pVMMReq, pReq->u.In.u64Arg, pSession);
1469	else
1470	pReq->Hdr.rc = VERR_WRONG_ORDER;
1471
1472	if ( RT_FAILURE(pReq->Hdr.rc)
1473	&& pReq->Hdr.rc != VERR_INTERRUPTED
1474	&& pReq->Hdr.rc != VERR_TIMEOUT)
1475	Log(("SUP_IOCTL_CALL_VMMR0_BIG: rc=%Rrc op=%u out=%u arg=%RX64 p/t=%RTproc/%RTthrd\n",
1476	pReq->Hdr.rc, pReq->u.In.uOperation, pReq->Hdr.cbOut, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf()));
1477	else
1478	Log4(("SUP_IOCTL_CALL_VMMR0_BIG: rc=%Rrc op=%u out=%u arg=%RX64 p/t=%RTproc/%RTthrd\n",
1479	pReq->Hdr.rc, pReq->u.In.uOperation, pReq->Hdr.cbOut, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf()));
1480	return 0;
1481	}
1482
1483	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_GET_PAGING_MODE):
1484	{
1485	/* validate */
1486	PSUPGETPAGINGMODE pReq = (PSUPGETPAGINGMODE)pReqHdr;
1487	REQ_CHECK_SIZES(SUP_IOCTL_GET_PAGING_MODE);
1488
1489	/* execute */
1490	pReq->Hdr.rc = VINF_SUCCESS;
1491	pReq->u.Out.enmMode = SUPR0GetPagingMode();
1492	return 0;
1493	}
1494
1495	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LOW_ALLOC):
1496	{
1497	/* validate */
1498	PSUPLOWALLOC pReq = (PSUPLOWALLOC)pReqHdr;
1499	REQ_CHECK_EXPR(SUP_IOCTL_LOW_ALLOC, pReq->Hdr.cbIn <= SUP_IOCTL_LOW_ALLOC_SIZE_IN);
1500	REQ_CHECK_SIZES_EX(SUP_IOCTL_LOW_ALLOC, SUP_IOCTL_LOW_ALLOC_SIZE_IN, SUP_IOCTL_LOW_ALLOC_SIZE_OUT(pReq->u.In.cPages));
1501
1502	/* execute */
1503	pReq->Hdr.rc = SUPR0LowAlloc(pSession, pReq->u.In.cPages, &pReq->u.Out.pvR0, &pReq->u.Out.pvR3, &pReq->u.Out.aPages[0]);
1504	if (RT_FAILURE(pReq->Hdr.rc))
1505	pReq->Hdr.cbOut = sizeof(pReq->Hdr);
1506	return 0;
1507	}
1508
1509	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LOW_FREE):
1510	{
1511	/* validate */
1512	PSUPLOWFREE pReq = (PSUPLOWFREE)pReqHdr;
1513	REQ_CHECK_SIZES(SUP_IOCTL_LOW_FREE);
1514
1515	/* execute */
1516	pReq->Hdr.rc = SUPR0LowFree(pSession, (RTHCUINTPTR)pReq->u.In.pvR3);
1517	return 0;
1518	}
1519
1520	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_GIP_MAP):
1521	{
1522	/* validate */
1523	PSUPGIPMAP pReq = (PSUPGIPMAP)pReqHdr;
1524	REQ_CHECK_SIZES(SUP_IOCTL_GIP_MAP);
1525
1526	/* execute */
1527	pReq->Hdr.rc = SUPR0GipMap(pSession, &pReq->u.Out.pGipR3, &pReq->u.Out.HCPhysGip);
1528	if (RT_SUCCESS(pReq->Hdr.rc))
1529	pReq->u.Out.pGipR0 = pDevExt->pGip;
1530	return 0;
1531	}
1532
1533	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_GIP_UNMAP):
1534	{
1535	/* validate */
1536	PSUPGIPUNMAP pReq = (PSUPGIPUNMAP)pReqHdr;
1537	REQ_CHECK_SIZES(SUP_IOCTL_GIP_UNMAP);
1538
1539	/* execute */
1540	pReq->Hdr.rc = SUPR0GipUnmap(pSession);
1541	return 0;
1542	}
1543
1544	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_SET_VM_FOR_FAST):
1545	{
1546	/* validate */
1547	PSUPSETVMFORFAST pReq = (PSUPSETVMFORFAST)pReqHdr;
1548	REQ_CHECK_SIZES(SUP_IOCTL_SET_VM_FOR_FAST);
1549	REQ_CHECK_EXPR_FMT( !pReq->u.In.pVMR0
1550	\|\| ( VALID_PTR(pReq->u.In.pVMR0)
1551	&& !((uintptr_t)pReq->u.In.pVMR0 & (PAGE_SIZE - 1))),
1552	("SUP_IOCTL_SET_VM_FOR_FAST: pVMR0=%p!\n", pReq->u.In.pVMR0));
1553	/* execute */
1554	pSession->pVM = pReq->u.In.pVMR0;
1555	pReq->Hdr.rc = VINF_SUCCESS;
1556	return 0;
1557	}
1558
1559	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_PAGE_ALLOC_EX):
1560	{
1561	/* validate */
1562	PSUPPAGEALLOCEX pReq = (PSUPPAGEALLOCEX)pReqHdr;
1563	REQ_CHECK_EXPR(SUP_IOCTL_PAGE_ALLOC_EX, pReq->Hdr.cbIn <= SUP_IOCTL_PAGE_ALLOC_EX_SIZE_IN);
1564	REQ_CHECK_SIZES_EX(SUP_IOCTL_PAGE_ALLOC_EX, SUP_IOCTL_PAGE_ALLOC_EX_SIZE_IN, SUP_IOCTL_PAGE_ALLOC_EX_SIZE_OUT(pReq->u.In.cPages));
1565	REQ_CHECK_EXPR_FMT(pReq->u.In.fKernelMapping \|\| pReq->u.In.fUserMapping,
1566	("SUP_IOCTL_PAGE_ALLOC_EX: No mapping requested!\n"));
1567	REQ_CHECK_EXPR_FMT(pReq->u.In.fUserMapping,
1568	("SUP_IOCTL_PAGE_ALLOC_EX: Must have user mapping!\n"));
1569	REQ_CHECK_EXPR_FMT(!pReq->u.In.fReserved0 && !pReq->u.In.fReserved1,
1570	("SUP_IOCTL_PAGE_ALLOC_EX: fReserved0=%d fReserved1=%d\n", pReq->u.In.fReserved0, pReq->u.In.fReserved1));
1571
1572	/* execute */
1573	pReq->Hdr.rc = SUPR0PageAllocEx(pSession, pReq->u.In.cPages, 0 /* fFlags */,
1574	pReq->u.In.fUserMapping ? &pReq->u.Out.pvR3 : NULL,
1575	pReq->u.In.fKernelMapping ? &pReq->u.Out.pvR0 : NULL,
1576	&pReq->u.Out.aPages[0]);
1577	if (RT_FAILURE(pReq->Hdr.rc))
1578	pReq->Hdr.cbOut = sizeof(pReq->Hdr);
1579	return 0;
1580	}
1581
1582	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_PAGE_MAP_KERNEL):
1583	{
1584	/* validate */
1585	PSUPPAGEMAPKERNEL pReq = (PSUPPAGEMAPKERNEL)pReqHdr;
1586	REQ_CHECK_SIZES(SUP_IOCTL_PAGE_MAP_KERNEL);
1587	REQ_CHECK_EXPR_FMT(!pReq->u.In.fFlags, ("SUP_IOCTL_PAGE_MAP_KERNEL: fFlags=%#x! MBZ\n", pReq->u.In.fFlags));
1588	REQ_CHECK_EXPR_FMT(!(pReq->u.In.offSub & PAGE_OFFSET_MASK), ("SUP_IOCTL_PAGE_MAP_KERNEL: offSub=%#x\n", pReq->u.In.offSub));
1589	REQ_CHECK_EXPR_FMT(pReq->u.In.cbSub && !(pReq->u.In.cbSub & PAGE_OFFSET_MASK),
1590	("SUP_IOCTL_PAGE_MAP_KERNEL: cbSub=%#x\n", pReq->u.In.cbSub));
1591
1592	/* execute */
1593	pReq->Hdr.rc = SUPR0PageMapKernel(pSession, pReq->u.In.pvR3, pReq->u.In.offSub, pReq->u.In.cbSub,
1594	pReq->u.In.fFlags, &pReq->u.Out.pvR0);
1595	if (RT_FAILURE(pReq->Hdr.rc))
1596	pReq->Hdr.cbOut = sizeof(pReq->Hdr);
1597	return 0;
1598	}
1599
1600	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_PAGE_PROTECT):
1601	{
1602	/* validate */
1603	PSUPPAGEPROTECT pReq = (PSUPPAGEPROTECT)pReqHdr;
1604	REQ_CHECK_SIZES(SUP_IOCTL_PAGE_PROTECT);
1605	REQ_CHECK_EXPR_FMT(!(pReq->u.In.fProt & ~(RTMEM_PROT_READ \| RTMEM_PROT_WRITE \| RTMEM_PROT_EXEC \| RTMEM_PROT_NONE)),
1606	("SUP_IOCTL_PAGE_PROTECT: fProt=%#x!\n", pReq->u.In.fProt));
1607	REQ_CHECK_EXPR_FMT(!(pReq->u.In.offSub & PAGE_OFFSET_MASK), ("SUP_IOCTL_PAGE_PROTECT: offSub=%#x\n", pReq->u.In.offSub));
1608	REQ_CHECK_EXPR_FMT(pReq->u.In.cbSub && !(pReq->u.In.cbSub & PAGE_OFFSET_MASK),
1609	("SUP_IOCTL_PAGE_PROTECT: cbSub=%#x\n", pReq->u.In.cbSub));
1610
1611	/* execute */
1612	pReq->Hdr.rc = SUPR0PageProtect(pSession, pReq->u.In.pvR3, pReq->u.In.pvR0, pReq->u.In.offSub, pReq->u.In.cbSub, pReq->u.In.fProt);
1613	return 0;
1614	}
1615
1616	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_PAGE_FREE):
1617	{
1618	/* validate */
1619	PSUPPAGEFREE pReq = (PSUPPAGEFREE)pReqHdr;
1620	REQ_CHECK_SIZES(SUP_IOCTL_PAGE_FREE);
1621
1622	/* execute */
1623	pReq->Hdr.rc = SUPR0PageFree(pSession, pReq->u.In.pvR3);
1624	return 0;
1625	}
1626
1627	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_CALL_SERVICE(0)):
1628	{
1629	/* validate */
1630	PSUPCALLSERVICE pReq = (PSUPCALLSERVICE)pReqHdr;
1631	Log4(("SUP_IOCTL_CALL_SERVICE: op=%u in=%u arg=%RX64 p/t=%RTproc/%RTthrd\n",
1632	pReq->u.In.uOperation, pReq->Hdr.cbIn, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf()));
1633
1634	if (pReq->Hdr.cbIn == SUP_IOCTL_CALL_SERVICE_SIZE(0))
1635	REQ_CHECK_SIZES_EX(SUP_IOCTL_CALL_SERVICE, SUP_IOCTL_CALL_SERVICE_SIZE_IN(0), SUP_IOCTL_CALL_SERVICE_SIZE_OUT(0));
1636	else
1637	{
1638	PSUPR0SERVICEREQHDR pSrvReq = (PSUPR0SERVICEREQHDR)&pReq->abReqPkt[0];
1639	REQ_CHECK_EXPR_FMT(pReq->Hdr.cbIn >= SUP_IOCTL_CALL_SERVICE_SIZE(sizeof(SUPR0SERVICEREQHDR)),
1640	("SUP_IOCTL_CALL_SERVICE: cbIn=%#x < %#lx\n", pReq->Hdr.cbIn, SUP_IOCTL_CALL_SERVICE_SIZE(sizeof(SUPR0SERVICEREQHDR))));
1641	REQ_CHECK_EXPR(SUP_IOCTL_CALL_SERVICE, pSrvReq->u32Magic == SUPR0SERVICEREQHDR_MAGIC);
1642	REQ_CHECK_SIZES_EX(SUP_IOCTL_CALL_SERVICE, SUP_IOCTL_CALL_SERVICE_SIZE_IN(pSrvReq->cbReq), SUP_IOCTL_CALL_SERVICE_SIZE_OUT(pSrvReq->cbReq));
1643	}
1644	REQ_CHECK_EXPR(SUP_IOCTL_CALL_SERVICE, RTStrEnd(pReq->u.In.szName, sizeof(pReq->u.In.szName)));
1645
1646	/* execute */
1647	pReq->Hdr.rc = supdrvIOCtl_CallServiceModule(pDevExt, pSession, pReq);
1648	return 0;
1649	}
1650
1651	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LOGGER_SETTINGS(0)):
1652	{
1653	/* validate */
1654	PSUPLOGGERSETTINGS pReq = (PSUPLOGGERSETTINGS)pReqHdr;
1655	size_t cbStrTab;
1656	REQ_CHECK_SIZE_OUT(SUP_IOCTL_LOGGER_SETTINGS, SUP_IOCTL_LOGGER_SETTINGS_SIZE_OUT);
1657	REQ_CHECK_EXPR(SUP_IOCTL_LOGGER_SETTINGS, pReq->Hdr.cbIn >= SUP_IOCTL_LOGGER_SETTINGS_SIZE_IN(1));
1658	cbStrTab = pReq->Hdr.cbIn - SUP_IOCTL_LOGGER_SETTINGS_SIZE_IN(0);
1659	REQ_CHECK_EXPR(SUP_IOCTL_LOGGER_SETTINGS, pReq->u.In.offGroups < cbStrTab);
1660	REQ_CHECK_EXPR(SUP_IOCTL_LOGGER_SETTINGS, pReq->u.In.offFlags < cbStrTab);
1661	REQ_CHECK_EXPR(SUP_IOCTL_LOGGER_SETTINGS, pReq->u.In.offDestination < cbStrTab);
1662	REQ_CHECK_EXPR_FMT(pReq->u.In.szStrings[cbStrTab - 1] == '\0',
1663	("SUP_IOCTL_LOGGER_SETTINGS: cbIn=%#x cbStrTab=%#zx LastChar=%d\n",
1664	pReq->Hdr.cbIn, cbStrTab, pReq->u.In.szStrings[cbStrTab - 1]));
1665	REQ_CHECK_EXPR(SUP_IOCTL_LOGGER_SETTINGS, pReq->u.In.fWhich <= SUPLOGGERSETTINGS_WHICH_RELEASE);
1666	REQ_CHECK_EXPR(SUP_IOCTL_LOGGER_SETTINGS, pReq->u.In.fWhat <= SUPLOGGERSETTINGS_WHAT_DESTROY);
1667
1668	/* execute */
1669	pReq->Hdr.rc = supdrvIOCtl_LoggerSettings(pDevExt, pSession, pReq);
1670	return 0;
1671	}
1672
1673	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_SEM_OP2):
1674	{
1675	/* validate */
1676	PSUPSEMOP2 pReq = (PSUPSEMOP2)pReqHdr;
1677	REQ_CHECK_SIZES_EX(SUP_IOCTL_SEM_OP2, SUP_IOCTL_SEM_OP2_SIZE_IN, SUP_IOCTL_SEM_OP2_SIZE_OUT);
1678	REQ_CHECK_EXPR(SUP_IOCTL_SEM_OP2, pReq->u.In.uReserved == 0);
1679
1680	/* execute */
1681	switch (pReq->u.In.uType)
1682	{
1683	case SUP_SEM_TYPE_EVENT:
1684	{
1685	SUPSEMEVENT hEvent = (SUPSEMEVENT)(uintptr_t)pReq->u.In.hSem;
1686	switch (pReq->u.In.uOp)
1687	{
1688	case SUPSEMOP2_WAIT_MS_REL:
1689	pReq->Hdr.rc = SUPSemEventWaitNoResume(pSession, hEvent, pReq->u.In.uArg.cRelMsTimeout);
1690	break;
1691	case SUPSEMOP2_WAIT_NS_ABS:
1692	pReq->Hdr.rc = SUPSemEventWaitNsAbsIntr(pSession, hEvent, pReq->u.In.uArg.uAbsNsTimeout);
1693	break;
1694	case SUPSEMOP2_WAIT_NS_REL:
1695	pReq->Hdr.rc = SUPSemEventWaitNsRelIntr(pSession, hEvent, pReq->u.In.uArg.cRelNsTimeout);
1696	break;
1697	case SUPSEMOP2_SIGNAL:
1698	pReq->Hdr.rc = SUPSemEventSignal(pSession, hEvent);
1699	break;
1700	case SUPSEMOP2_CLOSE:
1701	pReq->Hdr.rc = SUPSemEventClose(pSession, hEvent);
1702	break;
1703	case SUPSEMOP2_RESET:
1704	default:
1705	pReq->Hdr.rc = VERR_INVALID_FUNCTION;
1706	break;
1707	}
1708	break;
1709	}
1710
1711	case SUP_SEM_TYPE_EVENT_MULTI:
1712	{
1713	SUPSEMEVENTMULTI hEventMulti = (SUPSEMEVENTMULTI)(uintptr_t)pReq->u.In.hSem;
1714	switch (pReq->u.In.uOp)
1715	{
1716	case SUPSEMOP2_WAIT_MS_REL:
1717	pReq->Hdr.rc = SUPSemEventMultiWaitNoResume(pSession, hEventMulti, pReq->u.In.uArg.cRelMsTimeout);
1718	break;
1719	case SUPSEMOP2_WAIT_NS_ABS:
1720	pReq->Hdr.rc = SUPSemEventMultiWaitNsAbsIntr(pSession, hEventMulti, pReq->u.In.uArg.uAbsNsTimeout);
1721	break;
1722	case SUPSEMOP2_WAIT_NS_REL:
1723	pReq->Hdr.rc = SUPSemEventMultiWaitNsRelIntr(pSession, hEventMulti, pReq->u.In.uArg.cRelNsTimeout);
1724	break;
1725	case SUPSEMOP2_SIGNAL:
1726	pReq->Hdr.rc = SUPSemEventMultiSignal(pSession, hEventMulti);
1727	break;
1728	case SUPSEMOP2_CLOSE:
1729	pReq->Hdr.rc = SUPSemEventMultiClose(pSession, hEventMulti);
1730	break;
1731	case SUPSEMOP2_RESET:
1732	pReq->Hdr.rc = SUPSemEventMultiReset(pSession, hEventMulti);
1733	break;
1734	default:
1735	pReq->Hdr.rc = VERR_INVALID_FUNCTION;
1736	break;
1737	}
1738	break;
1739	}
1740
1741	default:
1742	pReq->Hdr.rc = VERR_INVALID_PARAMETER;
1743	break;
1744	}
1745	return 0;
1746	}
1747
1748	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_SEM_OP3):
1749	{
1750	/* validate */
1751	PSUPSEMOP3 pReq = (PSUPSEMOP3)pReqHdr;
1752	REQ_CHECK_SIZES_EX(SUP_IOCTL_SEM_OP3, SUP_IOCTL_SEM_OP3_SIZE_IN, SUP_IOCTL_SEM_OP3_SIZE_OUT);
1753	REQ_CHECK_EXPR(SUP_IOCTL_SEM_OP3, pReq->u.In.u32Reserved == 0 && pReq->u.In.u64Reserved == 0);
1754
1755	/* execute */
1756	switch (pReq->u.In.uType)
1757	{
1758	case SUP_SEM_TYPE_EVENT:
1759	{
1760	SUPSEMEVENT hEvent = (SUPSEMEVENT)(uintptr_t)pReq->u.In.hSem;
1761	switch (pReq->u.In.uOp)
1762	{
1763	case SUPSEMOP3_CREATE:
1764	REQ_CHECK_EXPR(SUP_IOCTL_SEM_OP3, hEvent == NIL_SUPSEMEVENT);
1765	pReq->Hdr.rc = SUPSemEventCreate(pSession, &hEvent);
1766	pReq->u.Out.hSem = (uint32_t)(uintptr_t)hEvent;
1767	break;
1768	case SUPSEMOP3_GET_RESOLUTION:
1769	REQ_CHECK_EXPR(SUP_IOCTL_SEM_OP3, hEvent == NIL_SUPSEMEVENT);
1770	pReq->Hdr.rc = VINF_SUCCESS;
1771	pReq->Hdr.cbOut = sizeof(*pReq);
1772	pReq->u.Out.cNsResolution = SUPSemEventGetResolution(pSession);
1773	break;
1774	default:
1775	pReq->Hdr.rc = VERR_INVALID_FUNCTION;
1776	break;
1777	}
1778	break;
1779	}
1780
1781	case SUP_SEM_TYPE_EVENT_MULTI:
1782	{
1783	SUPSEMEVENTMULTI hEventMulti = (SUPSEMEVENTMULTI)(uintptr_t)pReq->u.In.hSem;
1784	switch (pReq->u.In.uOp)
1785	{
1786	case SUPSEMOP3_CREATE:
1787	REQ_CHECK_EXPR(SUP_IOCTL_SEM_OP3, hEventMulti == NIL_SUPSEMEVENTMULTI);
1788	pReq->Hdr.rc = SUPSemEventMultiCreate(pSession, &hEventMulti);
1789	pReq->u.Out.hSem = (uint32_t)(uintptr_t)hEventMulti;
1790	break;
1791	case SUPSEMOP3_GET_RESOLUTION:
1792	REQ_CHECK_EXPR(SUP_IOCTL_SEM_OP3, hEventMulti == NIL_SUPSEMEVENTMULTI);
1793	pReq->Hdr.rc = VINF_SUCCESS;
1794	pReq->u.Out.cNsResolution = SUPSemEventMultiGetResolution(pSession);
1795	break;
1796	default:
1797	pReq->Hdr.rc = VERR_INVALID_FUNCTION;
1798	break;
1799	}
1800	break;
1801	}
1802
1803	default:
1804	pReq->Hdr.rc = VERR_INVALID_PARAMETER;
1805	break;
1806	}
1807	return 0;
1808	}
1809
1810	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_VT_CAPS):
1811	{
1812	/* validate */
1813	PSUPVTCAPS pReq = (PSUPVTCAPS)pReqHdr;
1814	REQ_CHECK_SIZES(SUP_IOCTL_VT_CAPS);
1815
1816	/* execute */
1817	pReq->Hdr.rc = SUPR0QueryVTCaps(pSession, &pReq->u.Out.Caps);
1818	if (RT_FAILURE(pReq->Hdr.rc))
1819	pReq->Hdr.cbOut = sizeof(pReq->Hdr);
1820	return 0;
1821	}
1822
1823	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_TRACER_OPEN):
1824	{
1825	/* validate */
1826	PSUPTRACEROPEN pReq = (PSUPTRACEROPEN)pReqHdr;
1827	REQ_CHECK_SIZES(SUP_IOCTL_TRACER_OPEN);
1828
1829	/* execute */
1830	pReq->Hdr.rc = supdrvIOCtl_TracerOpen(pDevExt, pSession, pReq->u.In.uCookie, pReq->u.In.uArg);
1831	return 0;
1832	}
1833
1834	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_TRACER_CLOSE):
1835	{
1836	/* validate */
1837	REQ_CHECK_SIZES(SUP_IOCTL_TRACER_CLOSE);
1838
1839	/* execute */
1840	pReqHdr->rc = supdrvIOCtl_TracerClose(pDevExt, pSession);
1841	return 0;
1842	}
1843
1844	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_TRACER_IOCTL):
1845	{
1846	/* validate */
1847	PSUPTRACERIOCTL pReq = (PSUPTRACERIOCTL)pReqHdr;
1848	REQ_CHECK_SIZES(SUP_IOCTL_TRACER_IOCTL);
1849
1850	/* execute */
1851	pReqHdr->rc = supdrvIOCtl_TracerIOCtl(pDevExt, pSession, pReq->u.In.uCmd, pReq->u.In.uArg, &pReq->u.Out.iRetVal);
1852	return 0;
1853	}
1854
1855	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_TRACER_UMOD_REG):
1856	{
1857	/* validate */
1858	PSUPTRACERUMODREG pReq = (PSUPTRACERUMODREG)pReqHdr;
1859	REQ_CHECK_SIZES(SUP_IOCTL_TRACER_UMOD_REG);
1860	if (!RTStrEnd(pReq->u.In.szName, sizeof(pReq->u.In.szName)))
1861	return VERR_INVALID_PARAMETER;
1862
1863	/* execute */
1864	pReqHdr->rc = supdrvIOCtl_TracerUmodRegister(pDevExt, pSession,
1865	pReq->u.In.R3PtrVtgHdr, pReq->u.In.uVtgHdrAddr,
1866	pReq->u.In.R3PtrStrTab, pReq->u.In.cbStrTab,
1867	pReq->u.In.szName, pReq->u.In.fFlags);
1868	return 0;
1869	}
1870
1871	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_TRACER_UMOD_DEREG):
1872	{
1873	/* validate */
1874	PSUPTRACERUMODDEREG pReq = (PSUPTRACERUMODDEREG)pReqHdr;
1875	REQ_CHECK_SIZES(SUP_IOCTL_TRACER_UMOD_DEREG);
1876
1877	/* execute */
1878	pReqHdr->rc = supdrvIOCtl_TracerUmodDeregister(pDevExt, pSession, pReq->u.In.pVtgHdr);
1879	return 0;
1880	}
1881
1882	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_TRACER_UMOD_FIRE_PROBE):
1883	{
1884	/* validate */
1885	PSUPTRACERUMODFIREPROBE pReq = (PSUPTRACERUMODFIREPROBE)pReqHdr;
1886	REQ_CHECK_SIZES(SUP_IOCTL_TRACER_UMOD_FIRE_PROBE);
1887
1888	supdrvIOCtl_TracerUmodProbeFire(pDevExt, pSession, &pReq->u.In);
1889	pReqHdr->rc = VINF_SUCCESS;
1890	return 0;
1891	}
1892
1893	default:
1894	Log(("Unknown IOCTL %#lx\n", (long)uIOCtl));
1895	break;
1896	}
1897	return VERR_GENERAL_FAILURE;
1898	}
1899
1900
1901	/**
1902	* I/O Control inner worker for the restricted operations.
1903	*
1904	* @returns IPRT status code.
1905	* @retval VERR_INVALID_PARAMETER if the request is invalid.
1906	*
1907	* @param uIOCtl Function number.
1908	* @param pDevExt Device extention.
1909	* @param pSession Session data.
1910	* @param pReqHdr The request header.
1911	*/
1912	static int supdrvIOCtlInnerRestricted(uintptr_t uIOCtl, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPREQHDR pReqHdr)
1913	{
1914	/*
1915	* The switch.
1916	*/
1917	switch (SUP_CTL_CODE_NO_SIZE(uIOCtl))
1918	{
1919	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_COOKIE):
1920	{
1921	PSUPCOOKIE pReq = (PSUPCOOKIE)pReqHdr;
1922	REQ_CHECK_SIZES(SUP_IOCTL_COOKIE);
1923	if (strncmp(pReq->u.In.szMagic, SUPCOOKIE_MAGIC, sizeof(pReq->u.In.szMagic)))
1924	{
1925	OSDBGPRINT(("SUP_IOCTL_COOKIE: invalid magic %.16s\n", pReq->u.In.szMagic));
1926	pReq->Hdr.rc = VERR_INVALID_MAGIC;
1927	return 0;
1928	}
1929
1930	/*
1931	* Match the version.
1932	* The current logic is very simple, match the major interface version.
1933	*/
1934	if ( pReq->u.In.u32MinVersion > SUPDRV_IOC_VERSION
1935	\|\| (pReq->u.In.u32MinVersion & 0xffff0000) != (SUPDRV_IOC_VERSION & 0xffff0000))
1936	{
1937	OSDBGPRINT(("SUP_IOCTL_COOKIE: Version mismatch. Requested: %#x Min: %#x Current: %#x\n",
1938	pReq->u.In.u32ReqVersion, pReq->u.In.u32MinVersion, SUPDRV_IOC_VERSION));
1939	pReq->u.Out.u32Cookie = 0xffffffff;
1940	pReq->u.Out.u32SessionCookie = 0xffffffff;
1941	pReq->u.Out.u32SessionVersion = 0xffffffff;
1942	pReq->u.Out.u32DriverVersion = SUPDRV_IOC_VERSION;
1943	pReq->u.Out.pSession = NULL;
1944	pReq->u.Out.cFunctions = 0;
1945	pReq->Hdr.rc = VERR_VERSION_MISMATCH;
1946	return 0;
1947	}
1948
1949	/*
1950	* Fill in return data and be gone.
1951	* N.B. The first one to change SUPDRV_IOC_VERSION shall makes sure that
1952	* u32SessionVersion <= u32ReqVersion!
1953	*/
1954	/** @todo Somehow validate the client and negotiate a secure cookie... */
1955	pReq->u.Out.u32Cookie = pDevExt->u32Cookie;
1956	pReq->u.Out.u32SessionCookie = pSession->u32Cookie;
1957	pReq->u.Out.u32SessionVersion = SUPDRV_IOC_VERSION;
1958	pReq->u.Out.u32DriverVersion = SUPDRV_IOC_VERSION;
1959	pReq->u.Out.pSession = pSession;
1960	pReq->u.Out.cFunctions = 0;
1961	pReq->Hdr.rc = VINF_SUCCESS;
1962	return 0;
1963	}
1964
1965	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_VT_CAPS):
1966	{
1967	/* validate */
1968	PSUPVTCAPS pReq = (PSUPVTCAPS)pReqHdr;
1969	REQ_CHECK_SIZES(SUP_IOCTL_VT_CAPS);
1970
1971	/* execute */
1972	pReq->Hdr.rc = SUPR0QueryVTCaps(pSession, &pReq->u.Out.Caps);
1973	if (RT_FAILURE(pReq->Hdr.rc))
1974	pReq->Hdr.cbOut = sizeof(pReq->Hdr);
1975	return 0;
1976	}
1977
1978	default:
1979	Log(("Unknown IOCTL %#lx\n", (long)uIOCtl));
1980	break;
1981	}
1982	return VERR_GENERAL_FAILURE;
1983	}
1984
1985
1986	/**
1987	* I/O Control worker.
1988	*
1989	* @returns IPRT status code.
1990	* @retval VERR_INVALID_PARAMETER if the request is invalid.
1991	*
1992	* @param uIOCtl Function number.
1993	* @param pDevExt Device extention.
1994	* @param pSession Session data.
1995	* @param pReqHdr The request header.
1996	*/
1997	int VBOXCALL supdrvIOCtl(uintptr_t uIOCtl, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPREQHDR pReqHdr)
1998	{
1999	int rc;
2000	VBOXDRV_IOCTL_ENTRY(pSession, uIOCtl, pReqHdr);
2001
2002	/*
2003	* Validate the request.
2004	*/
2005	/* this first check could probably be omitted as its also done by the OS specific code... */
2006	if (RT_UNLIKELY( (pReqHdr->fFlags & SUPREQHDR_FLAGS_MAGIC_MASK) != SUPREQHDR_FLAGS_MAGIC
2007	\|\| pReqHdr->cbIn < sizeof(*pReqHdr)
2008	\|\| pReqHdr->cbOut < sizeof(*pReqHdr)))
2009	{
2010	OSDBGPRINT(("vboxdrv: Bad ioctl request header; cbIn=%#lx cbOut=%#lx fFlags=%#lx\n",
2011	(long)pReqHdr->cbIn, (long)pReqHdr->cbOut, (long)pReqHdr->fFlags));
2012	VBOXDRV_IOCTL_RETURN(pSession, uIOCtl, pReqHdr, VERR_INVALID_PARAMETER, VINF_SUCCESS);
2013	return VERR_INVALID_PARAMETER;
2014	}
2015	if (RT_UNLIKELY(!RT_VALID_PTR(pSession)))
2016	{
2017	OSDBGPRINT(("vboxdrv: Invalid pSession valud %p (ioctl=%p)\n", pSession, (void *)uIOCtl));
2018	VBOXDRV_IOCTL_RETURN(pSession, uIOCtl, pReqHdr, VERR_INVALID_PARAMETER, VINF_SUCCESS);
2019	return VERR_INVALID_PARAMETER;
2020	}
2021	if (RT_UNLIKELY(uIOCtl == SUP_IOCTL_COOKIE))
2022	{
2023	if (pReqHdr->u32Cookie != SUPCOOKIE_INITIAL_COOKIE)
2024	{
2025	OSDBGPRINT(("SUP_IOCTL_COOKIE: bad cookie %#lx\n", (long)pReqHdr->u32Cookie));
2026	VBOXDRV_IOCTL_RETURN(pSession, uIOCtl, pReqHdr, VERR_INVALID_PARAMETER, VINF_SUCCESS);
2027	return VERR_INVALID_PARAMETER;
2028	}
2029	}
2030	else if (RT_UNLIKELY( pReqHdr->u32Cookie != pDevExt->u32Cookie
2031	\|\| pReqHdr->u32SessionCookie != pSession->u32Cookie))
2032	{
2033	OSDBGPRINT(("vboxdrv: bad cookie %#lx / %#lx.\n", (long)pReqHdr->u32Cookie, (long)pReqHdr->u32SessionCookie));
2034	VBOXDRV_IOCTL_RETURN(pSession, uIOCtl, pReqHdr, VERR_INVALID_PARAMETER, VINF_SUCCESS);
2035	return VERR_INVALID_PARAMETER;
2036	}
2037
2038	/*
2039	* Hand it to an inner function to avoid lots of unnecessary return tracepoints.
2040	*/
2041	if (pSession->fUnrestricted)
2042	rc = supdrvIOCtlInnerUnrestricted(uIOCtl, pDevExt, pSession, pReqHdr);
2043	else
2044	rc = supdrvIOCtlInnerRestricted(uIOCtl, pDevExt, pSession, pReqHdr);
2045
2046	VBOXDRV_IOCTL_RETURN(pSession, uIOCtl, pReqHdr, pReqHdr->rc, rc);
2047	return rc;
2048	}
2049
2050
2051	/**
2052	* Inter-Driver Communication (IDC) worker.
2053	*
2054	* @returns VBox status code.
2055	* @retval VINF_SUCCESS on success.
2056	* @retval VERR_INVALID_PARAMETER if the request is invalid.
2057	* @retval VERR_NOT_SUPPORTED if the request isn't supported.
2058	*
2059	* @param uReq The request (function) code.
2060	* @param pDevExt Device extention.
2061	* @param pSession Session data.
2062	* @param pReqHdr The request header.
2063	*/
2064	int VBOXCALL supdrvIDC(uintptr_t uReq, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPDRVIDCREQHDR pReqHdr)
2065	{
2066	/*
2067	* The OS specific code has already validated the pSession
2068	* pointer, and the request size being greater or equal to
2069	* size of the header.
2070	*
2071	* So, just check that pSession is a kernel context session.
2072	*/
2073	if (RT_UNLIKELY( pSession
2074	&& pSession->R0Process != NIL_RTR0PROCESS))
2075	return VERR_INVALID_PARAMETER;
2076
2077	/*
2078	* Validation macro.
2079	*/
2080	#define REQ_CHECK_IDC_SIZE(Name, cbExpect) \
2081	do { \
2082	if (RT_UNLIKELY(pReqHdr->cb != (cbExpect))) \
2083	{ \
2084	OSDBGPRINT(( #Name ": Invalid input/output sizes. cb=%ld expected %ld.\n", \
2085	(long)pReqHdr->cb, (long)(cbExpect))); \
2086	return pReqHdr->rc = VERR_INVALID_PARAMETER; \
2087	} \
2088	} while (0)
2089
2090	switch (uReq)
2091	{
2092	case SUPDRV_IDC_REQ_CONNECT:
2093	{
2094	PSUPDRVIDCREQCONNECT pReq = (PSUPDRVIDCREQCONNECT)pReqHdr;
2095	REQ_CHECK_IDC_SIZE(SUPDRV_IDC_REQ_CONNECT, sizeof(*pReq));
2096
2097	/*
2098	* Validate the cookie and other input.
2099	*/
2100	if (pReq->Hdr.pSession != NULL)
2101	{
2102	OSDBGPRINT(("SUPDRV_IDC_REQ_CONNECT: Hdr.pSession=%p expected NULL!\n", pReq->Hdr.pSession));
2103	return pReqHdr->rc = VERR_INVALID_PARAMETER;
2104	}
2105	if (pReq->u.In.u32MagicCookie != SUPDRVIDCREQ_CONNECT_MAGIC_COOKIE)
2106	{
2107	OSDBGPRINT(("SUPDRV_IDC_REQ_CONNECT: u32MagicCookie=%#x expected %#x!\n",
2108	(unsigned)pReq->u.In.u32MagicCookie, (unsigned)SUPDRVIDCREQ_CONNECT_MAGIC_COOKIE));
2109	return pReqHdr->rc = VERR_INVALID_PARAMETER;
2110	}
2111	if ( pReq->u.In.uMinVersion > pReq->u.In.uReqVersion
2112	\|\| (pReq->u.In.uMinVersion & UINT32_C(0xffff0000)) != (pReq->u.In.uReqVersion & UINT32_C(0xffff0000)))
2113	{
2114	OSDBGPRINT(("SUPDRV_IDC_REQ_CONNECT: uMinVersion=%#x uMaxVersion=%#x doesn't match!\n",
2115	pReq->u.In.uMinVersion, pReq->u.In.uReqVersion));
2116	return pReqHdr->rc = VERR_INVALID_PARAMETER;
2117	}
2118	if (pSession != NULL)
2119	{
2120	OSDBGPRINT(("SUPDRV_IDC_REQ_CONNECT: pSession=%p expected NULL!\n", pSession));
2121	return pReqHdr->rc = VERR_INVALID_PARAMETER;
2122	}
2123
2124	/*
2125	* Match the version.
2126	* The current logic is very simple, match the major interface version.
2127	*/
2128	if ( pReq->u.In.uMinVersion > SUPDRV_IDC_VERSION
2129	\|\| (pReq->u.In.uMinVersion & 0xffff0000) != (SUPDRV_IDC_VERSION & 0xffff0000))
2130	{
2131	OSDBGPRINT(("SUPDRV_IDC_REQ_CONNECT: Version mismatch. Requested: %#x Min: %#x Current: %#x\n",
2132	pReq->u.In.uReqVersion, pReq->u.In.uMinVersion, (unsigned)SUPDRV_IDC_VERSION));
2133	pReq->u.Out.pSession = NULL;
2134	pReq->u.Out.uSessionVersion = 0xffffffff;
2135	pReq->u.Out.uDriverVersion = SUPDRV_IDC_VERSION;
2136	pReq->u.Out.uDriverRevision = VBOX_SVN_REV;
2137	pReq->Hdr.rc = VERR_VERSION_MISMATCH;
2138	return VINF_SUCCESS;
2139	}
2140
2141	pReq->u.Out.pSession = NULL;
2142	pReq->u.Out.uSessionVersion = SUPDRV_IDC_VERSION;
2143	pReq->u.Out.uDriverVersion = SUPDRV_IDC_VERSION;
2144	pReq->u.Out.uDriverRevision = VBOX_SVN_REV;
2145
2146	pReq->Hdr.rc = supdrvCreateSession(pDevExt, false /* fUser /, true /fUnrestricted*/, &pSession);
2147	if (RT_FAILURE(pReq->Hdr.rc))
2148	{
2149	OSDBGPRINT(("SUPDRV_IDC_REQ_CONNECT: failed to create session, rc=%d\n", pReq->Hdr.rc));
2150	return VINF_SUCCESS;
2151	}
2152
2153	pReq->u.Out.pSession = pSession;
2154	pReq->Hdr.pSession = pSession;
2155
2156	return VINF_SUCCESS;
2157	}
2158
2159	case SUPDRV_IDC_REQ_DISCONNECT:
2160	{
2161	REQ_CHECK_IDC_SIZE(SUPDRV_IDC_REQ_DISCONNECT, sizeof(*pReqHdr));
2162
2163	supdrvSessionRelease(pSession);
2164	return pReqHdr->rc = VINF_SUCCESS;
2165	}
2166
2167	case SUPDRV_IDC_REQ_GET_SYMBOL:
2168	{
2169	PSUPDRVIDCREQGETSYM pReq = (PSUPDRVIDCREQGETSYM)pReqHdr;
2170	REQ_CHECK_IDC_SIZE(SUPDRV_IDC_REQ_GET_SYMBOL, sizeof(*pReq));
2171
2172	pReq->Hdr.rc = supdrvIDC_LdrGetSymbol(pDevExt, pSession, pReq);
2173	return VINF_SUCCESS;
2174	}
2175
2176	case SUPDRV_IDC_REQ_COMPONENT_REGISTER_FACTORY:
2177	{
2178	PSUPDRVIDCREQCOMPREGFACTORY pReq = (PSUPDRVIDCREQCOMPREGFACTORY)pReqHdr;
2179	REQ_CHECK_IDC_SIZE(SUPDRV_IDC_REQ_COMPONENT_REGISTER_FACTORY, sizeof(*pReq));
2180
2181	pReq->Hdr.rc = SUPR0ComponentRegisterFactory(pSession, pReq->u.In.pFactory);
2182	return VINF_SUCCESS;
2183	}
2184
2185	case SUPDRV_IDC_REQ_COMPONENT_DEREGISTER_FACTORY:
2186	{
2187	PSUPDRVIDCREQCOMPDEREGFACTORY pReq = (PSUPDRVIDCREQCOMPDEREGFACTORY)pReqHdr;
2188	REQ_CHECK_IDC_SIZE(SUPDRV_IDC_REQ_COMPONENT_DEREGISTER_FACTORY, sizeof(*pReq));
2189
2190	pReq->Hdr.rc = SUPR0ComponentDeregisterFactory(pSession, pReq->u.In.pFactory);
2191	return VINF_SUCCESS;
2192	}
2193
2194	default:
2195	Log(("Unknown IDC %#lx\n", (long)uReq));
2196	break;
2197	}
2198
2199	#undef REQ_CHECK_IDC_SIZE
2200	return VERR_NOT_SUPPORTED;
2201	}
2202
2203
2204	/**
2205	* Register a object for reference counting.
2206	* The object is registered with one reference in the specified session.
2207	*
2208	* @returns Unique identifier on success (pointer).
2209	* All future reference must use this identifier.
2210	* @returns NULL on failure.
2211	* @param pfnDestructor The destructore function which will be called when the reference count reaches 0.
2212	* @param pvUser1 The first user argument.
2213	* @param pvUser2 The second user argument.
2214	*/
2215	SUPR0DECL(void ) SUPR0ObjRegister(PSUPDRVSESSION pSession, SUPDRVOBJTYPE enmType, PFNSUPDRVDESTRUCTOR pfnDestructor, void pvUser1, void *pvUser2)
2216	{
2217	PSUPDRVDEVEXT pDevExt = pSession->pDevExt;
2218	PSUPDRVOBJ pObj;
2219	PSUPDRVUSAGE pUsage;
2220
2221	/*
2222	* Validate the input.
2223	*/
2224	AssertReturn(SUP_IS_SESSION_VALID(pSession), NULL);
2225	AssertReturn(enmType > SUPDRVOBJTYPE_INVALID && enmType < SUPDRVOBJTYPE_END, NULL);
2226	AssertPtrReturn(pfnDestructor, NULL);
2227
2228	/*
2229	* Allocate and initialize the object.
2230	*/
2231	pObj = (PSUPDRVOBJ)RTMemAlloc(sizeof(*pObj));
2232	if (!pObj)
2233	return NULL;
2234	pObj->u32Magic = SUPDRVOBJ_MAGIC;
2235	pObj->enmType = enmType;
2236	pObj->pNext = NULL;
2237	pObj->cUsage = 1;
2238	pObj->pfnDestructor = pfnDestructor;
2239	pObj->pvUser1 = pvUser1;
2240	pObj->pvUser2 = pvUser2;
2241	pObj->CreatorUid = pSession->Uid;
2242	pObj->CreatorGid = pSession->Gid;
2243	pObj->CreatorProcess= pSession->Process;
2244	supdrvOSObjInitCreator(pObj, pSession);
2245
2246	/*
2247	* Allocate the usage record.
2248	* (We keep freed usage records around to simplify SUPR0ObjAddRefEx().)
2249	*/
2250	RTSpinlockAcquire(pDevExt->Spinlock);
2251
2252	pUsage = pDevExt->pUsageFree;
2253	if (pUsage)
2254	pDevExt->pUsageFree = pUsage->pNext;
2255	else
2256	{
2257	RTSpinlockRelease(pDevExt->Spinlock);
2258	pUsage = (PSUPDRVUSAGE)RTMemAlloc(sizeof(*pUsage));
2259	if (!pUsage)
2260	{
2261	RTMemFree(pObj);
2262	return NULL;
2263	}
2264	RTSpinlockAcquire(pDevExt->Spinlock);
2265	}
2266
2267	/*
2268	* Insert the object and create the session usage record.
2269	*/
2270	/* The object. */
2271	pObj->pNext = pDevExt->pObjs;
2272	pDevExt->pObjs = pObj;
2273
2274	/* The session record. */
2275	pUsage->cUsage = 1;
2276	pUsage->pObj = pObj;
2277	pUsage->pNext = pSession->pUsage;
2278	/* Log2(("SUPR0ObjRegister: pUsage=%p:{.pObj=%p, .pNext=%p}\n", pUsage, pUsage->pObj, pUsage->pNext)); */
2279	pSession->pUsage = pUsage;
2280
2281	RTSpinlockRelease(pDevExt->Spinlock);
2282
2283	Log(("SUPR0ObjRegister: returns %p (pvUser1=%p, pvUser=%p)\n", pObj, pvUser1, pvUser2));
2284	return pObj;
2285	}
2286
2287
2288	/**
2289	* Increment the reference counter for the object associating the reference
2290	* with the specified session.
2291	*
2292	* @returns IPRT status code.
2293	* @param pvObj The identifier returned by SUPR0ObjRegister().
2294	* @param pSession The session which is referencing the object.
2295	*
2296	* @remarks The caller should not own any spinlocks and must carefully protect
2297	* itself against potential race with the destructor so freed memory
2298	* isn't accessed here.
2299	*/
2300	SUPR0DECL(int) SUPR0ObjAddRef(void *pvObj, PSUPDRVSESSION pSession)
2301	{
2302	return SUPR0ObjAddRefEx(pvObj, pSession, false /* fNoBlocking */);
2303	}
2304
2305
2306	/**
2307	* Increment the reference counter for the object associating the reference
2308	* with the specified session.
2309	*
2310	* @returns IPRT status code.
2311	* @retval VERR_TRY_AGAIN if fNoBlocking was set and a new usage record
2312	* couldn't be allocated. (If you see this you're not doing the right
2313	* thing and it won't ever work reliably.)
2314	*
2315	* @param pvObj The identifier returned by SUPR0ObjRegister().
2316	* @param pSession The session which is referencing the object.
2317	* @param fNoBlocking Set if it's not OK to block. Never try to make the
2318	* first reference to an object in a session with this
2319	* argument set.
2320	*
2321	* @remarks The caller should not own any spinlocks and must carefully protect
2322	* itself against potential race with the destructor so freed memory
2323	* isn't accessed here.
2324	*/
2325	SUPR0DECL(int) SUPR0ObjAddRefEx(void *pvObj, PSUPDRVSESSION pSession, bool fNoBlocking)
2326	{
2327	PSUPDRVDEVEXT pDevExt = pSession->pDevExt;
2328	PSUPDRVOBJ pObj = (PSUPDRVOBJ)pvObj;
2329	int rc = VINF_SUCCESS;
2330	PSUPDRVUSAGE pUsagePre;
2331	PSUPDRVUSAGE pUsage;
2332
2333	/*
2334	* Validate the input.
2335	* Be ready for the destruction race (someone might be stuck in the
2336	* destructor waiting a lock we own).
2337	*/
2338	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2339	AssertPtrReturn(pObj, VERR_INVALID_POINTER);
2340	AssertMsgReturn(pObj->u32Magic == SUPDRVOBJ_MAGIC \|\| pObj->u32Magic == SUPDRVOBJ_MAGIC_DEAD,
2341	("Invalid pvObj=%p magic=%#x (expected %#x or %#x)\n", pvObj, pObj->u32Magic, SUPDRVOBJ_MAGIC, SUPDRVOBJ_MAGIC_DEAD),
2342	VERR_INVALID_PARAMETER);
2343
2344	RTSpinlockAcquire(pDevExt->Spinlock);
2345
2346	if (RT_UNLIKELY(pObj->u32Magic != SUPDRVOBJ_MAGIC))
2347	{
2348	RTSpinlockRelease(pDevExt->Spinlock);
2349
2350	AssertMsgFailed(("pvObj=%p magic=%#x\n", pvObj, pObj->u32Magic));
2351	return VERR_WRONG_ORDER;
2352	}
2353
2354	/*
2355	* Preallocate the usage record if we can.
2356	*/
2357	pUsagePre = pDevExt->pUsageFree;
2358	if (pUsagePre)
2359	pDevExt->pUsageFree = pUsagePre->pNext;
2360	else if (!fNoBlocking)
2361	{
2362	RTSpinlockRelease(pDevExt->Spinlock);
2363	pUsagePre = (PSUPDRVUSAGE)RTMemAlloc(sizeof(*pUsagePre));
2364	if (!pUsagePre)
2365	return VERR_NO_MEMORY;
2366
2367	RTSpinlockAcquire(pDevExt->Spinlock);
2368	if (RT_UNLIKELY(pObj->u32Magic != SUPDRVOBJ_MAGIC))
2369	{
2370	RTSpinlockRelease(pDevExt->Spinlock);
2371
2372	AssertMsgFailed(("pvObj=%p magic=%#x\n", pvObj, pObj->u32Magic));
2373	return VERR_WRONG_ORDER;
2374	}
2375	}
2376
2377	/*
2378	* Reference the object.
2379	*/
2380	pObj->cUsage++;
2381
2382	/*
2383	* Look for the session record.
2384	*/
2385	for (pUsage = pSession->pUsage; pUsage; pUsage = pUsage->pNext)
2386	{
2387	/Log(("SUPR0AddRef: pUsage=%p:{.pObj=%p, .pNext=%p}\n", pUsage, pUsage->pObj, pUsage->pNext));/
2388	if (pUsage->pObj == pObj)
2389	break;
2390	}
2391	if (pUsage)
2392	pUsage->cUsage++;
2393	else if (pUsagePre)
2394	{
2395	/* create a new session record. */
2396	pUsagePre->cUsage = 1;
2397	pUsagePre->pObj = pObj;
2398	pUsagePre->pNext = pSession->pUsage;
2399	pSession->pUsage = pUsagePre;
2400	/Log(("SUPR0AddRef: pUsagePre=%p:{.pObj=%p, .pNext=%p}\n", pUsagePre, pUsagePre->pObj, pUsagePre->pNext));/
2401
2402	pUsagePre = NULL;
2403	}
2404	else
2405	{
2406	pObj->cUsage--;
2407	rc = VERR_TRY_AGAIN;
2408	}
2409
2410	/*
2411	* Put any unused usage record into the free list..
2412	*/
2413	if (pUsagePre)
2414	{
2415	pUsagePre->pNext = pDevExt->pUsageFree;
2416	pDevExt->pUsageFree = pUsagePre;
2417	}
2418
2419	RTSpinlockRelease(pDevExt->Spinlock);
2420
2421	return rc;
2422	}
2423
2424
2425	/**
2426	* Decrement / destroy a reference counter record for an object.
2427	*
2428	* The object is uniquely identified by pfnDestructor+pvUser1+pvUser2.
2429	*
2430	* @returns IPRT status code.
2431	* @retval VINF_SUCCESS if not destroyed.
2432	* @retval VINF_OBJECT_DESTROYED if it's destroyed by this release call.
2433	* @retval VERR_INVALID_PARAMETER if the object isn't valid. Will assert in
2434	* string builds.
2435	*
2436	* @param pvObj The identifier returned by SUPR0ObjRegister().
2437	* @param pSession The session which is referencing the object.
2438	*/
2439	SUPR0DECL(int) SUPR0ObjRelease(void *pvObj, PSUPDRVSESSION pSession)
2440	{
2441	PSUPDRVDEVEXT pDevExt = pSession->pDevExt;
2442	PSUPDRVOBJ pObj = (PSUPDRVOBJ)pvObj;
2443	int rc = VERR_INVALID_PARAMETER;
2444	PSUPDRVUSAGE pUsage;
2445	PSUPDRVUSAGE pUsagePrev;
2446
2447	/*
2448	* Validate the input.
2449	*/
2450	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2451	AssertMsgReturn(VALID_PTR(pObj) && pObj->u32Magic == SUPDRVOBJ_MAGIC,
2452	("Invalid pvObj=%p magic=%#x (exepcted %#x)\n", pvObj, pObj ? pObj->u32Magic : 0, SUPDRVOBJ_MAGIC),
2453	VERR_INVALID_PARAMETER);
2454
2455	/*
2456	* Acquire the spinlock and look for the usage record.
2457	*/
2458	RTSpinlockAcquire(pDevExt->Spinlock);
2459
2460	for (pUsagePrev = NULL, pUsage = pSession->pUsage;
2461	pUsage;
2462	pUsagePrev = pUsage, pUsage = pUsage->pNext)
2463	{
2464	/Log2(("SUPR0ObjRelease: pUsage=%p:{.pObj=%p, .pNext=%p}\n", pUsage, pUsage->pObj, pUsage->pNext));/
2465	if (pUsage->pObj == pObj)
2466	{
2467	rc = VINF_SUCCESS;
2468	AssertMsg(pUsage->cUsage >= 1 && pObj->cUsage >= pUsage->cUsage, ("glob %d; sess %d\n", pObj->cUsage, pUsage->cUsage));
2469	if (pUsage->cUsage > 1)
2470	{
2471	pObj->cUsage--;
2472	pUsage->cUsage--;
2473	}
2474	else
2475	{
2476	/*
2477	* Free the session record.
2478	*/
2479	if (pUsagePrev)
2480	pUsagePrev->pNext = pUsage->pNext;
2481	else
2482	pSession->pUsage = pUsage->pNext;
2483	pUsage->pNext = pDevExt->pUsageFree;
2484	pDevExt->pUsageFree = pUsage;
2485
2486	/* What about the object? */
2487	if (pObj->cUsage > 1)
2488	pObj->cUsage--;
2489	else
2490	{
2491	/*
2492	* Object is to be destroyed, unlink it.
2493	*/
2494	pObj->u32Magic = SUPDRVOBJ_MAGIC_DEAD;
2495	rc = VINF_OBJECT_DESTROYED;
2496	if (pDevExt->pObjs == pObj)
2497	pDevExt->pObjs = pObj->pNext;
2498	else
2499	{
2500	PSUPDRVOBJ pObjPrev;
2501	for (pObjPrev = pDevExt->pObjs; pObjPrev; pObjPrev = pObjPrev->pNext)
2502	if (pObjPrev->pNext == pObj)
2503	{
2504	pObjPrev->pNext = pObj->pNext;
2505	break;
2506	}
2507	Assert(pObjPrev);
2508	}
2509	}
2510	}
2511	break;
2512	}
2513	}
2514
2515	RTSpinlockRelease(pDevExt->Spinlock);
2516
2517	/*
2518	* Call the destructor and free the object if required.
2519	*/
2520	if (rc == VINF_OBJECT_DESTROYED)
2521	{
2522	Log(("SUPR0ObjRelease: destroying %p/%d (%p/%p) cpid=%RTproc pid=%RTproc dtor=%p\n",
2523	pObj, pObj->enmType, pObj->pvUser1, pObj->pvUser2, pObj->CreatorProcess, RTProcSelf(), pObj->pfnDestructor));
2524	if (pObj->pfnDestructor)
2525	pObj->pfnDestructor(pObj, pObj->pvUser1, pObj->pvUser2);
2526	RTMemFree(pObj);
2527	}
2528
2529	AssertMsg(pUsage, ("pvObj=%p\n", pvObj));
2530	return rc;
2531	}
2532
2533
2534	/**
2535	* Verifies that the current process can access the specified object.
2536	*
2537	* @returns The following IPRT status code:
2538	* @retval VINF_SUCCESS if access was granted.
2539	* @retval VERR_PERMISSION_DENIED if denied access.
2540	* @retval VERR_INVALID_PARAMETER if invalid parameter.
2541	*
2542	* @param pvObj The identifier returned by SUPR0ObjRegister().
2543	* @param pSession The session which wishes to access the object.
2544	* @param pszObjName Object string name. This is optional and depends on the object type.
2545	*
2546	* @remark The caller is responsible for making sure the object isn't removed while
2547	* we're inside this function. If uncertain about this, just call AddRef before calling us.
2548	*/
2549	SUPR0DECL(int) SUPR0ObjVerifyAccess(void pvObj, PSUPDRVSESSION pSession, const char pszObjName)
2550	{
2551	PSUPDRVOBJ pObj = (PSUPDRVOBJ)pvObj;
2552	int rc;
2553
2554	/*
2555	* Validate the input.
2556	*/
2557	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2558	AssertMsgReturn(VALID_PTR(pObj) && pObj->u32Magic == SUPDRVOBJ_MAGIC,
2559	("Invalid pvObj=%p magic=%#x (exepcted %#x)\n", pvObj, pObj ? pObj->u32Magic : 0, SUPDRVOBJ_MAGIC),
2560	VERR_INVALID_PARAMETER);
2561
2562	/*
2563	* Check access. (returns true if a decision has been made.)
2564	*/
2565	rc = VERR_INTERNAL_ERROR;
2566	if (supdrvOSObjCanAccess(pObj, pSession, pszObjName, &rc))
2567	return rc;
2568
2569	/*
2570	* Default policy is to allow the user to access his own
2571	* stuff but nothing else.
2572	*/
2573	if (pObj->CreatorUid == pSession->Uid)
2574	return VINF_SUCCESS;
2575	return VERR_PERMISSION_DENIED;
2576	}
2577
2578
2579	/**
2580	* Lock pages.
2581	*
2582	* @returns IPRT status code.
2583	* @param pSession Session to which the locked memory should be associated.
2584	* @param pvR3 Start of the memory range to lock.
2585	* This must be page aligned.
2586	* @param cPages Number of pages to lock.
2587	* @param paPages Where to put the physical addresses of locked memory.
2588	*/
2589	SUPR0DECL(int) SUPR0LockMem(PSUPDRVSESSION pSession, RTR3PTR pvR3, uint32_t cPages, PRTHCPHYS paPages)
2590	{
2591	int rc;
2592	SUPDRVMEMREF Mem = { NIL_RTR0MEMOBJ, NIL_RTR0MEMOBJ, MEMREF_TYPE_UNUSED };
2593	const size_t cb = (size_t)cPages << PAGE_SHIFT;
2594	LogFlow(("SUPR0LockMem: pSession=%p pvR3=%p cPages=%d paPages=%p\n", pSession, (void *)pvR3, cPages, paPages));
2595
2596	/*
2597	* Verify input.
2598	*/
2599	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2600	AssertPtrReturn(paPages, VERR_INVALID_PARAMETER);
2601	if ( RT_ALIGN_R3PT(pvR3, PAGE_SIZE, RTR3PTR) != pvR3
2602	\|\| !pvR3)
2603	{
2604	Log(("pvR3 (%p) must be page aligned and not NULL!\n", (void *)pvR3));
2605	return VERR_INVALID_PARAMETER;
2606	}
2607
2608	/*
2609	* Let IPRT do the job.
2610	*/
2611	Mem.eType = MEMREF_TYPE_LOCKED;
2612	rc = RTR0MemObjLockUser(&Mem.MemObj, pvR3, cb, RTMEM_PROT_READ \| RTMEM_PROT_WRITE, RTR0ProcHandleSelf());
2613	if (RT_SUCCESS(rc))
2614	{
2615	uint32_t iPage = cPages;
2616	AssertMsg(RTR0MemObjAddressR3(Mem.MemObj) == pvR3, ("%p == %p\n", RTR0MemObjAddressR3(Mem.MemObj), pvR3));
2617	AssertMsg(RTR0MemObjSize(Mem.MemObj) == cb, ("%x == %x\n", RTR0MemObjSize(Mem.MemObj), cb));
2618
2619	while (iPage-- > 0)
2620	{
2621	paPages[iPage] = RTR0MemObjGetPagePhysAddr(Mem.MemObj, iPage);
2622	if (RT_UNLIKELY(paPages[iPage] == NIL_RTCCPHYS))
2623	{
2624	AssertMsgFailed(("iPage=%d\n", iPage));
2625	rc = VERR_INTERNAL_ERROR;
2626	break;
2627	}
2628	}
2629	if (RT_SUCCESS(rc))
2630	rc = supdrvMemAdd(&Mem, pSession);
2631	if (RT_FAILURE(rc))
2632	{
2633	int rc2 = RTR0MemObjFree(Mem.MemObj, false);
2634	AssertRC(rc2);
2635	}
2636	}
2637
2638	return rc;
2639	}
2640
2641
2642	/**
2643	* Unlocks the memory pointed to by pv.
2644	*
2645	* @returns IPRT status code.
2646	* @param pSession Session to which the memory was locked.
2647	* @param pvR3 Memory to unlock.
2648	*/
2649	SUPR0DECL(int) SUPR0UnlockMem(PSUPDRVSESSION pSession, RTR3PTR pvR3)
2650	{
2651	LogFlow(("SUPR0UnlockMem: pSession=%p pvR3=%p\n", pSession, (void *)pvR3));
2652	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2653	return supdrvMemRelease(pSession, (RTHCUINTPTR)pvR3, MEMREF_TYPE_LOCKED);
2654	}
2655
2656
2657	/**
2658	* Allocates a chunk of page aligned memory with contiguous and fixed physical
2659	* backing.
2660	*
2661	* @returns IPRT status code.
2662	* @param pSession Session data.
2663	* @param cPages Number of pages to allocate.
2664	* @param ppvR0 Where to put the address of Ring-0 mapping the allocated memory.
2665	* @param ppvR3 Where to put the address of Ring-3 mapping the allocated memory.
2666	* @param pHCPhys Where to put the physical address of allocated memory.
2667	*/
2668	SUPR0DECL(int) SUPR0ContAlloc(PSUPDRVSESSION pSession, uint32_t cPages, PRTR0PTR ppvR0, PRTR3PTR ppvR3, PRTHCPHYS pHCPhys)
2669	{
2670	int rc;
2671	SUPDRVMEMREF Mem = { NIL_RTR0MEMOBJ, NIL_RTR0MEMOBJ, MEMREF_TYPE_UNUSED };
2672	LogFlow(("SUPR0ContAlloc: pSession=%p cPages=%d ppvR0=%p ppvR3=%p pHCPhys=%p\n", pSession, cPages, ppvR0, ppvR3, pHCPhys));
2673
2674	/*
2675	* Validate input.
2676	*/
2677	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2678	if (!ppvR3 \|\| !ppvR0 \|\| !pHCPhys)
2679	{
2680	Log(("Null pointer. All of these should be set: pSession=%p ppvR0=%p ppvR3=%p pHCPhys=%p\n",
2681	pSession, ppvR0, ppvR3, pHCPhys));
2682	return VERR_INVALID_PARAMETER;
2683
2684	}
2685	if (cPages < 1 \|\| cPages >= 256)
2686	{
2687	Log(("Illegal request cPages=%d, must be greater than 0 and smaller than 256.\n", cPages));
2688	return VERR_PAGE_COUNT_OUT_OF_RANGE;
2689	}
2690
2691	/*
2692	* Let IPRT do the job.
2693	*/
2694	rc = RTR0MemObjAllocCont(&Mem.MemObj, cPages << PAGE_SHIFT, true /* executable R0 mapping */);
2695	if (RT_SUCCESS(rc))
2696	{
2697	int rc2;
2698	rc = RTR0MemObjMapUser(&Mem.MapObjR3, Mem.MemObj, (RTR3PTR)-1, 0,
2699	RTMEM_PROT_EXEC \| RTMEM_PROT_WRITE \| RTMEM_PROT_READ, RTR0ProcHandleSelf());
2700	if (RT_SUCCESS(rc))
2701	{
2702	Mem.eType = MEMREF_TYPE_CONT;
2703	rc = supdrvMemAdd(&Mem, pSession);
2704	if (!rc)
2705	{
2706	*ppvR0 = RTR0MemObjAddress(Mem.MemObj);
2707	*ppvR3 = RTR0MemObjAddressR3(Mem.MapObjR3);
2708	*pHCPhys = RTR0MemObjGetPagePhysAddr(Mem.MemObj, 0);
2709	return 0;
2710	}
2711
2712	rc2 = RTR0MemObjFree(Mem.MapObjR3, false);
2713	AssertRC(rc2);
2714	}
2715	rc2 = RTR0MemObjFree(Mem.MemObj, false);
2716	AssertRC(rc2);
2717	}
2718
2719	return rc;
2720	}
2721
2722
2723	/**
2724	* Frees memory allocated using SUPR0ContAlloc().
2725	*
2726	* @returns IPRT status code.
2727	* @param pSession The session to which the memory was allocated.
2728	* @param uPtr Pointer to the memory (ring-3 or ring-0).
2729	*/
2730	SUPR0DECL(int) SUPR0ContFree(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr)
2731	{
2732	LogFlow(("SUPR0ContFree: pSession=%p uPtr=%p\n", pSession, (void *)uPtr));
2733	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2734	return supdrvMemRelease(pSession, uPtr, MEMREF_TYPE_CONT);
2735	}
2736
2737
2738	/**
2739	* Allocates a chunk of page aligned memory with fixed physical backing below 4GB.
2740	*
2741	* The memory isn't zeroed.
2742	*
2743	* @returns IPRT status code.
2744	* @param pSession Session data.
2745	* @param cPages Number of pages to allocate.
2746	* @param ppvR0 Where to put the address of Ring-0 mapping of the allocated memory.
2747	* @param ppvR3 Where to put the address of Ring-3 mapping of the allocated memory.
2748	* @param paPages Where to put the physical addresses of allocated memory.
2749	*/
2750	SUPR0DECL(int) SUPR0LowAlloc(PSUPDRVSESSION pSession, uint32_t cPages, PRTR0PTR ppvR0, PRTR3PTR ppvR3, PRTHCPHYS paPages)
2751	{
2752	unsigned iPage;
2753	int rc;
2754	SUPDRVMEMREF Mem = { NIL_RTR0MEMOBJ, NIL_RTR0MEMOBJ, MEMREF_TYPE_UNUSED };
2755	LogFlow(("SUPR0LowAlloc: pSession=%p cPages=%d ppvR3=%p ppvR0=%p paPages=%p\n", pSession, cPages, ppvR3, ppvR0, paPages));
2756
2757	/*
2758	* Validate input.
2759	*/
2760	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2761	if (!ppvR3 \|\| !ppvR0 \|\| !paPages)
2762	{
2763	Log(("Null pointer. All of these should be set: pSession=%p ppvR3=%p ppvR0=%p paPages=%p\n",
2764	pSession, ppvR3, ppvR0, paPages));
2765	return VERR_INVALID_PARAMETER;
2766
2767	}
2768	if (cPages < 1 \|\| cPages >= 256)
2769	{
2770	Log(("Illegal request cPages=%d, must be greater than 0 and smaller than 256.\n", cPages));
2771	return VERR_PAGE_COUNT_OUT_OF_RANGE;
2772	}
2773
2774	/*
2775	* Let IPRT do the work.
2776	*/
2777	rc = RTR0MemObjAllocLow(&Mem.MemObj, cPages << PAGE_SHIFT, true /* executable ring-0 mapping */);
2778	if (RT_SUCCESS(rc))
2779	{
2780	int rc2;
2781	rc = RTR0MemObjMapUser(&Mem.MapObjR3, Mem.MemObj, (RTR3PTR)-1, 0,
2782	RTMEM_PROT_EXEC \| RTMEM_PROT_WRITE \| RTMEM_PROT_READ, RTR0ProcHandleSelf());
2783	if (RT_SUCCESS(rc))
2784	{
2785	Mem.eType = MEMREF_TYPE_LOW;
2786	rc = supdrvMemAdd(&Mem, pSession);
2787	if (!rc)
2788	{
2789	for (iPage = 0; iPage < cPages; iPage++)
2790	{
2791	paPages[iPage] = RTR0MemObjGetPagePhysAddr(Mem.MemObj, iPage);
2792	AssertMsg(!(paPages[iPage] & (PAGE_SIZE - 1)), ("iPage=%d Phys=%RHp\n", paPages[iPage]));
2793	}
2794	*ppvR0 = RTR0MemObjAddress(Mem.MemObj);
2795	*ppvR3 = RTR0MemObjAddressR3(Mem.MapObjR3);
2796	return 0;
2797	}
2798
2799	rc2 = RTR0MemObjFree(Mem.MapObjR3, false);
2800	AssertRC(rc2);
2801	}
2802
2803	rc2 = RTR0MemObjFree(Mem.MemObj, false);
2804	AssertRC(rc2);
2805	}
2806
2807	return rc;
2808	}
2809
2810
2811	/**
2812	* Frees memory allocated using SUPR0LowAlloc().
2813	*
2814	* @returns IPRT status code.
2815	* @param pSession The session to which the memory was allocated.
2816	* @param uPtr Pointer to the memory (ring-3 or ring-0).
2817	*/
2818	SUPR0DECL(int) SUPR0LowFree(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr)
2819	{
2820	LogFlow(("SUPR0LowFree: pSession=%p uPtr=%p\n", pSession, (void *)uPtr));
2821	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2822	return supdrvMemRelease(pSession, uPtr, MEMREF_TYPE_LOW);
2823	}
2824
2825
2826
2827	/**
2828	* Allocates a chunk of memory with both R0 and R3 mappings.
2829	* The memory is fixed and it's possible to query the physical addresses using SUPR0MemGetPhys().
2830	*
2831	* @returns IPRT status code.
2832	* @param pSession The session to associated the allocation with.
2833	* @param cb Number of bytes to allocate.
2834	* @param ppvR0 Where to store the address of the Ring-0 mapping.
2835	* @param ppvR3 Where to store the address of the Ring-3 mapping.
2836	*/
2837	SUPR0DECL(int) SUPR0MemAlloc(PSUPDRVSESSION pSession, uint32_t cb, PRTR0PTR ppvR0, PRTR3PTR ppvR3)
2838	{
2839	int rc;
2840	SUPDRVMEMREF Mem = { NIL_RTR0MEMOBJ, NIL_RTR0MEMOBJ, MEMREF_TYPE_UNUSED };
2841	LogFlow(("SUPR0MemAlloc: pSession=%p cb=%d ppvR0=%p ppvR3=%p\n", pSession, cb, ppvR0, ppvR3));
2842
2843	/*
2844	* Validate input.
2845	*/
2846	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2847	AssertPtrReturn(ppvR0, VERR_INVALID_POINTER);
2848	AssertPtrReturn(ppvR3, VERR_INVALID_POINTER);
2849	if (cb < 1 \|\| cb >= _4M)
2850	{
2851	Log(("Illegal request cb=%u; must be greater than 0 and smaller than 4MB.\n", cb));
2852	return VERR_INVALID_PARAMETER;
2853	}
2854
2855	/*
2856	* Let IPRT do the work.
2857	*/
2858	rc = RTR0MemObjAllocPage(&Mem.MemObj, cb, true /* executable ring-0 mapping */);
2859	if (RT_SUCCESS(rc))
2860	{
2861	int rc2;
2862	rc = RTR0MemObjMapUser(&Mem.MapObjR3, Mem.MemObj, (RTR3PTR)-1, 0,
2863	RTMEM_PROT_EXEC \| RTMEM_PROT_WRITE \| RTMEM_PROT_READ, RTR0ProcHandleSelf());
2864	if (RT_SUCCESS(rc))
2865	{
2866	Mem.eType = MEMREF_TYPE_MEM;
2867	rc = supdrvMemAdd(&Mem, pSession);
2868	if (!rc)
2869	{
2870	*ppvR0 = RTR0MemObjAddress(Mem.MemObj);
2871	*ppvR3 = RTR0MemObjAddressR3(Mem.MapObjR3);
2872	return VINF_SUCCESS;
2873	}
2874
2875	rc2 = RTR0MemObjFree(Mem.MapObjR3, false);
2876	AssertRC(rc2);
2877	}
2878
2879	rc2 = RTR0MemObjFree(Mem.MemObj, false);
2880	AssertRC(rc2);
2881	}
2882
2883	return rc;
2884	}
2885
2886
2887	/**
2888	* Get the physical addresses of memory allocated using SUPR0MemAlloc().
2889	*
2890	* @returns IPRT status code.
2891	* @param pSession The session to which the memory was allocated.
2892	* @param uPtr The Ring-0 or Ring-3 address returned by SUPR0MemAlloc().
2893	* @param paPages Where to store the physical addresses.
2894	*/
2895	SUPR0DECL(int) SUPR0MemGetPhys(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr, PSUPPAGE paPages) /** @todo switch this bugger to RTHCPHYS */
2896	{
2897	PSUPDRVBUNDLE pBundle;
2898	LogFlow(("SUPR0MemGetPhys: pSession=%p uPtr=%p paPages=%p\n", pSession, (void *)uPtr, paPages));
2899
2900	/*
2901	* Validate input.
2902	*/
2903	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2904	AssertPtrReturn(paPages, VERR_INVALID_POINTER);
2905	AssertReturn(uPtr, VERR_INVALID_PARAMETER);
2906
2907	/*
2908	* Search for the address.
2909	*/
2910	RTSpinlockAcquire(pSession->Spinlock);
2911	for (pBundle = &pSession->Bundle; pBundle; pBundle = pBundle->pNext)
2912	{
2913	if (pBundle->cUsed > 0)
2914	{
2915	unsigned i;
2916	for (i = 0; i < RT_ELEMENTS(pBundle->aMem); i++)
2917	{
2918	if ( pBundle->aMem[i].eType == MEMREF_TYPE_MEM
2919	&& pBundle->aMem[i].MemObj != NIL_RTR0MEMOBJ
2920	&& ( (RTHCUINTPTR)RTR0MemObjAddress(pBundle->aMem[i].MemObj) == uPtr
2921	\|\| ( pBundle->aMem[i].MapObjR3 != NIL_RTR0MEMOBJ
2922	&& RTR0MemObjAddressR3(pBundle->aMem[i].MapObjR3) == uPtr)
2923	)
2924	)
2925	{
2926	const size_t cPages = RTR0MemObjSize(pBundle->aMem[i].MemObj) >> PAGE_SHIFT;
2927	size_t iPage;
2928	for (iPage = 0; iPage < cPages; iPage++)
2929	{
2930	paPages[iPage].Phys = RTR0MemObjGetPagePhysAddr(pBundle->aMem[i].MemObj, iPage);
2931	paPages[iPage].uReserved = 0;
2932	}
2933	RTSpinlockRelease(pSession->Spinlock);
2934	return VINF_SUCCESS;
2935	}
2936	}
2937	}
2938	}
2939	RTSpinlockRelease(pSession->Spinlock);
2940	Log(("Failed to find %p!!!\n", (void *)uPtr));
2941	return VERR_INVALID_PARAMETER;
2942	}
2943
2944
2945	/**
2946	* Free memory allocated by SUPR0MemAlloc().
2947	*
2948	* @returns IPRT status code.
2949	* @param pSession The session owning the allocation.
2950	* @param uPtr The Ring-0 or Ring-3 address returned by SUPR0MemAlloc().
2951	*/
2952	SUPR0DECL(int) SUPR0MemFree(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr)
2953	{
2954	LogFlow(("SUPR0MemFree: pSession=%p uPtr=%p\n", pSession, (void *)uPtr));
2955	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2956	return supdrvMemRelease(pSession, uPtr, MEMREF_TYPE_MEM);
2957	}
2958
2959
2960	/**
2961	* Allocates a chunk of memory with a kernel or/and a user mode mapping.
2962	*
2963	* The memory is fixed and it's possible to query the physical addresses using
2964	* SUPR0MemGetPhys().
2965	*
2966	* @returns IPRT status code.
2967	* @param pSession The session to associated the allocation with.
2968	* @param cPages The number of pages to allocate.
2969	* @param fFlags Flags, reserved for the future. Must be zero.
2970	* @param ppvR3 Where to store the address of the Ring-3 mapping.
2971	* NULL if no ring-3 mapping.
2972	* @param ppvR3 Where to store the address of the Ring-0 mapping.
2973	* NULL if no ring-0 mapping.
2974	* @param paPages Where to store the addresses of the pages. Optional.
2975	*/
2976	SUPR0DECL(int) SUPR0PageAllocEx(PSUPDRVSESSION pSession, uint32_t cPages, uint32_t fFlags, PRTR3PTR ppvR3, PRTR0PTR ppvR0, PRTHCPHYS paPages)
2977	{
2978	int rc;
2979	SUPDRVMEMREF Mem = { NIL_RTR0MEMOBJ, NIL_RTR0MEMOBJ, MEMREF_TYPE_UNUSED };
2980	LogFlow(("SUPR0PageAlloc: pSession=%p cb=%d ppvR3=%p\n", pSession, cPages, ppvR3));
2981
2982	/*
2983	* Validate input. The allowed allocation size must be at least equal to the maximum guest VRAM size.
2984	*/
2985	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2986	AssertPtrNullReturn(ppvR3, VERR_INVALID_POINTER);
2987	AssertPtrNullReturn(ppvR0, VERR_INVALID_POINTER);
2988	AssertReturn(ppvR3 \|\| ppvR0, VERR_INVALID_PARAMETER);
2989	AssertReturn(!fFlags, VERR_INVALID_PARAMETER);
2990	if (cPages < 1 \|\| cPages > VBOX_MAX_ALLOC_PAGE_COUNT)
2991	{
2992	Log(("SUPR0PageAlloc: Illegal request cb=%u; must be greater than 0 and smaller than %uMB (VBOX_MAX_ALLOC_PAGE_COUNT pages).\n", cPages, VBOX_MAX_ALLOC_PAGE_COUNT * (_1M / _4K)));
2993	return VERR_PAGE_COUNT_OUT_OF_RANGE;
2994	}
2995
2996	/*
2997	* Let IPRT do the work.
2998	*/
2999	if (ppvR0)
3000	rc = RTR0MemObjAllocPage(&Mem.MemObj, (size_t)cPages * PAGE_SIZE, true /* fExecutable */);
3001	else
3002	rc = RTR0MemObjAllocPhysNC(&Mem.MemObj, (size_t)cPages * PAGE_SIZE, NIL_RTHCPHYS);
3003	if (RT_SUCCESS(rc))
3004	{
3005	int rc2;
3006	if (ppvR3)
3007	rc = RTR0MemObjMapUser(&Mem.MapObjR3, Mem.MemObj, (RTR3PTR)-1, 0,
3008	RTMEM_PROT_EXEC \| RTMEM_PROT_WRITE \| RTMEM_PROT_READ, RTR0ProcHandleSelf());
3009	else
3010	Mem.MapObjR3 = NIL_RTR0MEMOBJ;
3011	if (RT_SUCCESS(rc))
3012	{
3013	Mem.eType = MEMREF_TYPE_PAGE;
3014	rc = supdrvMemAdd(&Mem, pSession);
3015	if (!rc)
3016	{
3017	if (ppvR3)
3018	*ppvR3 = RTR0MemObjAddressR3(Mem.MapObjR3);
3019	if (ppvR0)
3020	*ppvR0 = RTR0MemObjAddress(Mem.MemObj);
3021	if (paPages)
3022	{
3023	uint32_t iPage = cPages;
3024	while (iPage-- > 0)
3025	{
3026	paPages[iPage] = RTR0MemObjGetPagePhysAddr(Mem.MapObjR3, iPage);
3027	Assert(paPages[iPage] != NIL_RTHCPHYS);
3028	}
3029	}
3030	return VINF_SUCCESS;
3031	}
3032
3033	rc2 = RTR0MemObjFree(Mem.MapObjR3, false);
3034	AssertRC(rc2);
3035	}
3036
3037	rc2 = RTR0MemObjFree(Mem.MemObj, false);
3038	AssertRC(rc2);
3039	}
3040	return rc;
3041	}
3042
3043
3044	/**
3045	* Maps a chunk of memory previously allocated by SUPR0PageAllocEx into kernel
3046	* space.
3047	*
3048	* @returns IPRT status code.
3049	* @param pSession The session to associated the allocation with.
3050	* @param pvR3 The ring-3 address returned by SUPR0PageAllocEx.
3051	* @param offSub Where to start mapping. Must be page aligned.
3052	* @param cbSub How much to map. Must be page aligned.
3053	* @param fFlags Flags, MBZ.
3054	* @param ppvR0 Where to return the address of the ring-0 mapping on
3055	* success.
3056	*/
3057	SUPR0DECL(int) SUPR0PageMapKernel(PSUPDRVSESSION pSession, RTR3PTR pvR3, uint32_t offSub, uint32_t cbSub,
3058	uint32_t fFlags, PRTR0PTR ppvR0)
3059	{
3060	int rc;
3061	PSUPDRVBUNDLE pBundle;
3062	RTR0MEMOBJ hMemObj = NIL_RTR0MEMOBJ;
3063	LogFlow(("SUPR0PageMapKernel: pSession=%p pvR3=%p offSub=%#x cbSub=%#x\n", pSession, pvR3, offSub, cbSub));
3064
3065	/*
3066	* Validate input. The allowed allocation size must be at least equal to the maximum guest VRAM size.
3067	*/
3068	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
3069	AssertPtrNullReturn(ppvR0, VERR_INVALID_POINTER);
3070	AssertReturn(!fFlags, VERR_INVALID_PARAMETER);
3071	AssertReturn(!(offSub & PAGE_OFFSET_MASK), VERR_INVALID_PARAMETER);
3072	AssertReturn(!(cbSub & PAGE_OFFSET_MASK), VERR_INVALID_PARAMETER);
3073	AssertReturn(cbSub, VERR_INVALID_PARAMETER);
3074
3075	/*
3076	* Find the memory object.
3077	*/
3078	RTSpinlockAcquire(pSession->Spinlock);
3079	for (pBundle = &pSession->Bundle; pBundle; pBundle = pBundle->pNext)
3080	{
3081	if (pBundle->cUsed > 0)
3082	{
3083	unsigned i;
3084	for (i = 0; i < RT_ELEMENTS(pBundle->aMem); i++)
3085	{
3086	if ( ( pBundle->aMem[i].eType == MEMREF_TYPE_PAGE
3087	&& pBundle->aMem[i].MemObj != NIL_RTR0MEMOBJ
3088	&& pBundle->aMem[i].MapObjR3 != NIL_RTR0MEMOBJ
3089	&& RTR0MemObjAddressR3(pBundle->aMem[i].MapObjR3) == pvR3)
3090	\|\| ( pBundle->aMem[i].eType == MEMREF_TYPE_LOCKED
3091	&& pBundle->aMem[i].MemObj != NIL_RTR0MEMOBJ
3092	&& pBundle->aMem[i].MapObjR3 == NIL_RTR0MEMOBJ
3093	&& RTR0MemObjAddressR3(pBundle->aMem[i].MemObj) == pvR3))
3094	{
3095	hMemObj = pBundle->aMem[i].MemObj;
3096	break;
3097	}
3098	}
3099	}
3100	}
3101	RTSpinlockRelease(pSession->Spinlock);
3102
3103	rc = VERR_INVALID_PARAMETER;
3104	if (hMemObj != NIL_RTR0MEMOBJ)
3105	{
3106	/*
3107	* Do some further input validations before calling IPRT.
3108	* (Cleanup is done indirectly by telling RTR0MemObjFree to include mappings.)
3109	*/
3110	size_t cbMemObj = RTR0MemObjSize(hMemObj);
3111	if ( offSub < cbMemObj
3112	&& cbSub <= cbMemObj
3113	&& offSub + cbSub <= cbMemObj)
3114	{
3115	RTR0MEMOBJ hMapObj;
3116	rc = RTR0MemObjMapKernelEx(&hMapObj, hMemObj, (void *)-1, 0,
3117	RTMEM_PROT_READ \| RTMEM_PROT_WRITE, offSub, cbSub);
3118	if (RT_SUCCESS(rc))
3119	*ppvR0 = RTR0MemObjAddress(hMapObj);
3120	}
3121	else
3122	SUPR0Printf("SUPR0PageMapKernel: cbMemObj=%#x offSub=%#x cbSub=%#x\n", cbMemObj, offSub, cbSub);
3123
3124	}
3125	return rc;
3126	}
3127
3128
3129	/**
3130	* Changes the page level protection of one or more pages previously allocated
3131	* by SUPR0PageAllocEx.
3132	*
3133	* @returns IPRT status code.
3134	* @param pSession The session to associated the allocation with.
3135	* @param pvR3 The ring-3 address returned by SUPR0PageAllocEx.
3136	* NIL_RTR3PTR if the ring-3 mapping should be unaffected.
3137	* @param pvR0 The ring-0 address returned by SUPR0PageAllocEx.
3138	* NIL_RTR0PTR if the ring-0 mapping should be unaffected.
3139	* @param offSub Where to start changing. Must be page aligned.
3140	* @param cbSub How much to change. Must be page aligned.
3141	* @param fProt The new page level protection, see RTMEM_PROT_*.
3142	*/
3143	SUPR0DECL(int) SUPR0PageProtect(PSUPDRVSESSION pSession, RTR3PTR pvR3, RTR0PTR pvR0, uint32_t offSub, uint32_t cbSub, uint32_t fProt)
3144	{
3145	int rc;
3146	PSUPDRVBUNDLE pBundle;
3147	RTR0MEMOBJ hMemObjR0 = NIL_RTR0MEMOBJ;
3148	RTR0MEMOBJ hMemObjR3 = NIL_RTR0MEMOBJ;
3149	LogFlow(("SUPR0PageProtect: pSession=%p pvR3=%p pvR0=%p offSub=%#x cbSub=%#x fProt-%#x\n", pSession, pvR3, pvR0, offSub, cbSub, fProt));
3150
3151	/*
3152	* Validate input. The allowed allocation size must be at least equal to the maximum guest VRAM size.
3153	*/
3154	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
3155	AssertReturn(!(fProt & ~(RTMEM_PROT_READ \| RTMEM_PROT_WRITE \| RTMEM_PROT_EXEC \| RTMEM_PROT_NONE)), VERR_INVALID_PARAMETER);
3156	AssertReturn(!(offSub & PAGE_OFFSET_MASK), VERR_INVALID_PARAMETER);
3157	AssertReturn(!(cbSub & PAGE_OFFSET_MASK), VERR_INVALID_PARAMETER);
3158	AssertReturn(cbSub, VERR_INVALID_PARAMETER);
3159
3160	/*
3161	* Find the memory object.
3162	*/
3163	RTSpinlockAcquire(pSession->Spinlock);
3164	for (pBundle = &pSession->Bundle; pBundle; pBundle = pBundle->pNext)
3165	{
3166	if (pBundle->cUsed > 0)
3167	{
3168	unsigned i;
3169	for (i = 0; i < RT_ELEMENTS(pBundle->aMem); i++)
3170	{
3171	if ( pBundle->aMem[i].eType == MEMREF_TYPE_PAGE
3172	&& pBundle->aMem[i].MemObj != NIL_RTR0MEMOBJ
3173	&& ( pBundle->aMem[i].MapObjR3 != NIL_RTR0MEMOBJ
3174	\|\| pvR3 == NIL_RTR3PTR)
3175	&& ( pvR0 == NIL_RTR0PTR
3176	\|\| RTR0MemObjAddress(pBundle->aMem[i].MemObj) == pvR0)
3177	&& ( pvR3 == NIL_RTR3PTR
3178	\|\| RTR0MemObjAddressR3(pBundle->aMem[i].MapObjR3) == pvR3))
3179	{
3180	if (pvR0 != NIL_RTR0PTR)
3181	hMemObjR0 = pBundle->aMem[i].MemObj;
3182	if (pvR3 != NIL_RTR3PTR)
3183	hMemObjR3 = pBundle->aMem[i].MapObjR3;
3184	break;
3185	}
3186	}
3187	}
3188	}
3189	RTSpinlockRelease(pSession->Spinlock);
3190
3191	rc = VERR_INVALID_PARAMETER;
3192	if ( hMemObjR0 != NIL_RTR0MEMOBJ
3193	\|\| hMemObjR3 != NIL_RTR0MEMOBJ)
3194	{
3195	/*
3196	* Do some further input validations before calling IPRT.
3197	*/
3198	size_t cbMemObj = hMemObjR0 != NIL_RTR0PTR ? RTR0MemObjSize(hMemObjR0) : RTR0MemObjSize(hMemObjR3);
3199	if ( offSub < cbMemObj
3200	&& cbSub <= cbMemObj
3201	&& offSub + cbSub <= cbMemObj)
3202	{
3203	rc = VINF_SUCCESS;
3204	if (hMemObjR3 != NIL_RTR0PTR)
3205	rc = RTR0MemObjProtect(hMemObjR3, offSub, cbSub, fProt);
3206	if (hMemObjR0 != NIL_RTR0PTR && RT_SUCCESS(rc))
3207	rc = RTR0MemObjProtect(hMemObjR0, offSub, cbSub, fProt);
3208	}
3209	else
3210	SUPR0Printf("SUPR0PageMapKernel: cbMemObj=%#x offSub=%#x cbSub=%#x\n", cbMemObj, offSub, cbSub);
3211
3212	}
3213	return rc;
3214
3215	}
3216
3217
3218	/**
3219	* Free memory allocated by SUPR0PageAlloc() and SUPR0PageAllocEx().
3220	*
3221	* @returns IPRT status code.
3222	* @param pSession The session owning the allocation.
3223	* @param pvR3 The Ring-3 address returned by SUPR0PageAlloc() or
3224	* SUPR0PageAllocEx().
3225	*/
3226	SUPR0DECL(int) SUPR0PageFree(PSUPDRVSESSION pSession, RTR3PTR pvR3)
3227	{
3228	LogFlow(("SUPR0PageFree: pSession=%p pvR3=%p\n", pSession, (void *)pvR3));
3229	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
3230	return supdrvMemRelease(pSession, (RTHCUINTPTR)pvR3, MEMREF_TYPE_PAGE);
3231	}
3232
3233
3234	/**
3235	* Gets the paging mode of the current CPU.
3236	*
3237	* @returns Paging mode, SUPPAGEINGMODE_INVALID on error.
3238	*/
3239	SUPR0DECL(SUPPAGINGMODE) SUPR0GetPagingMode(void)
3240	{
3241	SUPPAGINGMODE enmMode;
3242
3243	RTR0UINTREG cr0 = ASMGetCR0();
3244	if ((cr0 & (X86_CR0_PG \| X86_CR0_PE)) != (X86_CR0_PG \| X86_CR0_PE))
3245	enmMode = SUPPAGINGMODE_INVALID;
3246	else
3247	{
3248	RTR0UINTREG cr4 = ASMGetCR4();
3249	uint32_t fNXEPlusLMA = 0;
3250	if (cr4 & X86_CR4_PAE)
3251	{
3252	uint32_t fExtFeatures = ASMCpuId_EDX(0x80000001);
3253	if (fExtFeatures & (X86_CPUID_EXT_FEATURE_EDX_NX \| X86_CPUID_EXT_FEATURE_EDX_LONG_MODE))
3254	{
3255	uint64_t efer = ASMRdMsr(MSR_K6_EFER);
3256	if ((fExtFeatures & X86_CPUID_EXT_FEATURE_EDX_NX) && (efer & MSR_K6_EFER_NXE))
3257	fNXEPlusLMA \|= RT_BIT(0);
3258	if ((fExtFeatures & X86_CPUID_EXT_FEATURE_EDX_LONG_MODE) && (efer & MSR_K6_EFER_LMA))
3259	fNXEPlusLMA \|= RT_BIT(1);
3260	}
3261	}
3262
3263	switch ((cr4 & (X86_CR4_PAE \| X86_CR4_PGE)) \| fNXEPlusLMA)
3264	{
3265	case 0:
3266	enmMode = SUPPAGINGMODE_32_BIT;
3267	break;
3268
3269	case X86_CR4_PGE:
3270	enmMode = SUPPAGINGMODE_32_BIT_GLOBAL;
3271	break;
3272
3273	case X86_CR4_PAE:
3274	enmMode = SUPPAGINGMODE_PAE;
3275	break;
3276
3277	case X86_CR4_PAE \| RT_BIT(0):
3278	enmMode = SUPPAGINGMODE_PAE_NX;
3279	break;
3280
3281	case X86_CR4_PAE \| X86_CR4_PGE:
3282	enmMode = SUPPAGINGMODE_PAE_GLOBAL;
3283	break;
3284
3285	case X86_CR4_PAE \| X86_CR4_PGE \| RT_BIT(0):
3286	enmMode = SUPPAGINGMODE_PAE_GLOBAL;
3287	break;
3288
3289	case RT_BIT(1) \| X86_CR4_PAE:
3290	enmMode = SUPPAGINGMODE_AMD64;
3291	break;
3292
3293	case RT_BIT(1) \| X86_CR4_PAE \| RT_BIT(0):
3294	enmMode = SUPPAGINGMODE_AMD64_NX;
3295	break;
3296
3297	case RT_BIT(1) \| X86_CR4_PAE \| X86_CR4_PGE:
3298	enmMode = SUPPAGINGMODE_AMD64_GLOBAL;
3299	break;
3300
3301	case RT_BIT(1) \| X86_CR4_PAE \| X86_CR4_PGE \| RT_BIT(0):
3302	enmMode = SUPPAGINGMODE_AMD64_GLOBAL_NX;
3303	break;
3304
3305	default:
3306	AssertMsgFailed(("Cannot happen! cr4=%#x fNXEPlusLMA=%d\n", cr4, fNXEPlusLMA));
3307	enmMode = SUPPAGINGMODE_INVALID;
3308	break;
3309	}
3310	}
3311	return enmMode;
3312	}
3313
3314
3315	/**
3316	* Enables or disabled hardware virtualization extensions using native OS APIs.
3317	*
3318	* @returns VBox status code.
3319	* @retval VINF_SUCCESS on success.
3320	* @retval VERR_NOT_SUPPORTED if not supported by the native OS.
3321	*
3322	* @param fEnable Whether to enable or disable.
3323	*/
3324	SUPR0DECL(int) SUPR0EnableVTx(bool fEnable)
3325	{
3326	#ifdef RT_OS_DARWIN
3327	return supdrvOSEnableVTx(fEnable);
3328	#else
3329	return VERR_NOT_SUPPORTED;
3330	#endif
3331	}
3332
3333
3334	/**
3335	* Suspends hardware virtualization extensions using the native OS API.
3336	*
3337	* This is called prior to entering raw-mode context.
3338	*
3339	* @returns @c true if suspended, @c false if not.
3340	*/
3341	SUPR0DECL(bool) SUPR0SuspendVTxOnCpu(void)
3342	{
3343	#ifdef RT_OS_DARWIN
3344	return supdrvOSSuspendVTxOnCpu();
3345	#else
3346	return false;
3347	#endif
3348	}
3349
3350
3351	/**
3352	* Resumes hardware virtualization extensions using the native OS API.
3353	*
3354	* This is called after to entering raw-mode context.
3355	*
3356	* @param fSuspended The return value of SUPR0SuspendVTxOnCpu.
3357	*/
3358	SUPR0DECL(void) SUPR0ResumeVTxOnCpu(bool fSuspended)
3359	{
3360	#ifdef RT_OS_DARWIN
3361	supdrvOSResumeVTxOnCpu(fSuspended);
3362	#else
3363	Assert(!fSuspended);
3364	#endif
3365	}
3366
3367
3368	/**
3369	* Queries the AMD-V and VT-x capabilities of the calling CPU.
3370	*
3371	* @returns VBox status code.
3372	* @retval VERR_VMX_NO_VMX
3373	* @retval VERR_VMX_MSR_LOCKED_OR_DISABLED
3374	* @retval VERR_SVM_NO_SVM
3375	* @retval VERR_SVM_DISABLED
3376	* @retval VERR_UNSUPPORTED_CPU if not identifiable as an AMD, Intel or VIA
3377	* (centaur) CPU.
3378	*
3379	* @param pSession The session handle.
3380	* @param pfCaps Where to store the capabilities.
3381	*/
3382	SUPR0DECL(int) SUPR0QueryVTCaps(PSUPDRVSESSION pSession, uint32_t *pfCaps)
3383	{
3384	/*
3385	* Input validation.
3386	*/
3387	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
3388	AssertPtrReturn(pfCaps, VERR_INVALID_POINTER);
3389
3390	*pfCaps = 0;
3391
3392	if (ASMHasCpuId())
3393	{
3394	uint32_t fFeaturesECX, fFeaturesEDX, uDummy;
3395	uint32_t uMaxId, uVendorEBX, uVendorECX, uVendorEDX;
3396	uint64_t u64FeatMsr;
3397
3398	ASMCpuId(0, &uMaxId, &uVendorEBX, &uVendorECX, &uVendorEDX);
3399	ASMCpuId(1, &uDummy, &uDummy, &fFeaturesECX, &fFeaturesEDX);
3400
3401	if ( ASMIsValidStdRange(uMaxId)
3402	&& ( ASMIsIntelCpuEx( uVendorEBX, uVendorECX, uVendorEDX)
3403	\|\| ASMIsViaCentaurCpuEx(uVendorEBX, uVendorECX, uVendorEDX) )
3404	)
3405	{
3406	if ( (fFeaturesECX & X86_CPUID_FEATURE_ECX_VMX)
3407	&& (fFeaturesEDX & X86_CPUID_FEATURE_EDX_MSR)
3408	&& (fFeaturesEDX & X86_CPUID_FEATURE_EDX_FXSR)
3409	)
3410	{
3411	bool fInSmxMode;
3412	bool fMsrLocked;
3413	bool fSmxVmxAllowed;
3414	bool fVmxAllowed;
3415	bool fAllowed;
3416
3417	/*
3418	* We require the lock bit and the appropriate VMXON bit to be set otherwise VMXON will generate a #GP
3419	* This is a simplified check (assumes BIOS does it job and properly locks the control bit). For the more
3420	* extensive procedure see hmR0InitIntelCpu().
3421	*/
3422	u64FeatMsr = ASMRdMsr(MSR_IA32_FEATURE_CONTROL);
3423	fInSmxMode = !!(ASMGetCR4() & X86_CR4_SMXE);
3424	fMsrLocked = !!(u64FeatMsr & MSR_IA32_FEATURE_CONTROL_LOCK);
3425	fSmxVmxAllowed = fMsrLocked && !!(u64FeatMsr & MSR_IA32_FEATURE_CONTROL_SMX_VMXON);
3426	fVmxAllowed = fMsrLocked && !!(u64FeatMsr & MSR_IA32_FEATURE_CONTROL_VMXON);
3427	fAllowed = fInSmxMode ? fSmxVmxAllowed : fVmxAllowed;
3428	if (fAllowed)
3429	{
3430	VMX_CAPABILITY vtCaps;
3431
3432	*pfCaps \|= SUPVTCAPS_VT_X;
3433
3434	vtCaps.u = ASMRdMsr(MSR_IA32_VMX_PROCBASED_CTLS);
3435	if (vtCaps.n.allowed1 & VMX_VMCS_CTRL_PROC_EXEC_USE_SECONDARY_EXEC_CTRL)
3436	{
3437	vtCaps.u = ASMRdMsr(MSR_IA32_VMX_PROCBASED_CTLS2);
3438	if (vtCaps.n.allowed1 & VMX_VMCS_CTRL_PROC_EXEC2_EPT)
3439	*pfCaps \|= SUPVTCAPS_NESTED_PAGING;
3440	}
3441	return VINF_SUCCESS;
3442	}
3443	return fInSmxMode ? VERR_VMX_MSR_SMX_VMXON_DISABLED : VERR_VMX_MSR_VMXON_DISABLED;
3444	}
3445	return VERR_VMX_NO_VMX;
3446	}
3447
3448	if ( ASMIsAmdCpuEx(uVendorEBX, uVendorECX, uVendorEDX)
3449	&& ASMIsValidStdRange(uMaxId))
3450	{
3451	uint32_t fExtFeaturesEcx, uExtMaxId;
3452	ASMCpuId(0x80000000, &uExtMaxId, &uDummy, &uDummy, &uDummy);
3453	ASMCpuId(0x80000001, &uDummy, &uDummy, &fExtFeaturesEcx, &uDummy);
3454	if ( ASMIsValidExtRange(uExtMaxId)
3455	&& uExtMaxId >= 0x8000000a
3456	&& (fExtFeaturesEcx & X86_CPUID_AMD_FEATURE_ECX_SVM)
3457	&& (fFeaturesEDX & X86_CPUID_FEATURE_EDX_MSR)
3458	&& (fFeaturesEDX & X86_CPUID_FEATURE_EDX_FXSR)
3459	)
3460	{
3461	/* Check if SVM is disabled */
3462	u64FeatMsr = ASMRdMsr(MSR_K8_VM_CR);
3463	if (!(u64FeatMsr & MSR_K8_VM_CR_SVM_DISABLE))
3464	{
3465	uint32_t fSvmFeatures;
3466	*pfCaps \|= SUPVTCAPS_AMD_V;
3467
3468	/* Query AMD-V features. */
3469	ASMCpuId(0x8000000a, &uDummy, &uDummy, &uDummy, &fSvmFeatures);
3470	if (fSvmFeatures & AMD_CPUID_SVM_FEATURE_EDX_NESTED_PAGING)
3471	*pfCaps \|= SUPVTCAPS_NESTED_PAGING;
3472
3473	return VINF_SUCCESS;
3474	}
3475	return VERR_SVM_DISABLED;
3476	}
3477	return VERR_SVM_NO_SVM;
3478	}
3479	}
3480
3481	return VERR_UNSUPPORTED_CPU;
3482	}
3483
3484
3485	/**
3486	* (Re-)initializes the per-cpu structure prior to starting or resuming the GIP
3487	* updating.
3488	*
3489	* @param pGipCpu The per CPU structure for this CPU.
3490	* @param u64NanoTS The current time.
3491	*/
3492	static void supdrvGipReInitCpu(PSUPGIPCPU pGipCpu, uint64_t u64NanoTS)
3493	{
3494	pGipCpu->u64TSC = ASMReadTSC() - pGipCpu->u32UpdateIntervalTSC;
3495	pGipCpu->u64NanoTS = u64NanoTS;
3496	}
3497
3498
3499	/**
3500	* Set the current TSC and NanoTS value for the CPU.
3501	*
3502	* @param idCpu The CPU ID. Unused - we have to use the APIC ID.
3503	* @param pvUser1 Pointer to the ring-0 GIP mapping.
3504	* @param pvUser2 Pointer to the variable holding the current time.
3505	*/
3506	static DECLCALLBACK(void) supdrvGipReInitCpuCallback(RTCPUID idCpu, void pvUser1, void pvUser2)
3507	{
3508	PSUPGLOBALINFOPAGE pGip = (PSUPGLOBALINFOPAGE)pvUser1;
3509	unsigned iCpu = pGip->aiCpuFromApicId[ASMGetApicId()];
3510
3511	if (RT_LIKELY(iCpu < pGip->cCpus && pGip->aCPUs[iCpu].idCpu == idCpu))
3512	supdrvGipReInitCpu(&pGip->aCPUs[iCpu], (uint64_t )pvUser2);
3513
3514	NOREF(pvUser2);
3515	NOREF(idCpu);
3516	}
3517
3518
3519	/**
3520	* Maps the GIP into userspace and/or get the physical address of the GIP.
3521	*
3522	* @returns IPRT status code.
3523	* @param pSession Session to which the GIP mapping should belong.
3524	* @param ppGipR3 Where to store the address of the ring-3 mapping. (optional)
3525	* @param pHCPhysGip Where to store the physical address. (optional)
3526	*
3527	* @remark There is no reference counting on the mapping, so one call to this function
3528	* count globally as one reference. One call to SUPR0GipUnmap() is will unmap GIP
3529	* and remove the session as a GIP user.
3530	*/
3531	SUPR0DECL(int) SUPR0GipMap(PSUPDRVSESSION pSession, PRTR3PTR ppGipR3, PRTHCPHYS pHCPhysGip)
3532	{
3533	int rc;
3534	PSUPDRVDEVEXT pDevExt = pSession->pDevExt;
3535	RTR3PTR pGipR3 = NIL_RTR3PTR;
3536	RTHCPHYS HCPhys = NIL_RTHCPHYS;
3537	LogFlow(("SUPR0GipMap: pSession=%p ppGipR3=%p pHCPhysGip=%p\n", pSession, ppGipR3, pHCPhysGip));
3538
3539	/*
3540	* Validate
3541	*/
3542	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
3543	AssertPtrNullReturn(ppGipR3, VERR_INVALID_POINTER);
3544	AssertPtrNullReturn(pHCPhysGip, VERR_INVALID_POINTER);
3545
3546	#ifdef SUPDRV_USE_MUTEX_FOR_GIP
3547	RTSemMutexRequest(pDevExt->mtxGip, RT_INDEFINITE_WAIT);
3548	#else
3549	RTSemFastMutexRequest(pDevExt->mtxGip);
3550	#endif
3551	if (pDevExt->pGip)
3552	{
3553	/*
3554	* Map it?
3555	*/
3556	rc = VINF_SUCCESS;
3557	if (ppGipR3)
3558	{
3559	if (pSession->GipMapObjR3 == NIL_RTR0MEMOBJ)
3560	rc = RTR0MemObjMapUser(&pSession->GipMapObjR3, pDevExt->GipMemObj, (RTR3PTR)-1, 0,
3561	RTMEM_PROT_READ, RTR0ProcHandleSelf());
3562	if (RT_SUCCESS(rc))
3563	pGipR3 = RTR0MemObjAddressR3(pSession->GipMapObjR3);
3564	}
3565
3566	/*
3567	* Get physical address.
3568	*/
3569	if (pHCPhysGip && RT_SUCCESS(rc))
3570	HCPhys = pDevExt->HCPhysGip;
3571
3572	/*
3573	* Reference globally.
3574	*/
3575	if (!pSession->fGipReferenced && RT_SUCCESS(rc))
3576	{
3577	pSession->fGipReferenced = 1;
3578	pDevExt->cGipUsers++;
3579	if (pDevExt->cGipUsers == 1)
3580	{
3581	PSUPGLOBALINFOPAGE pGipR0 = pDevExt->pGip;
3582	uint64_t u64NanoTS;
3583	uint32_t u32SystemResolution;
3584	unsigned i;
3585
3586	LogFlow(("SUPR0GipMap: Resumes GIP updating\n"));
3587
3588	/*
3589	* Try bump up the system timer resolution.
3590	* The more interrupts the better...
3591	*/
3592	if ( RT_SUCCESS_NP(RTTimerRequestSystemGranularity( 976563 /* 1024 HZ */, &u32SystemResolution))
3593	\|\| RT_SUCCESS_NP(RTTimerRequestSystemGranularity( 1000000 /* 1000 HZ */, &u32SystemResolution))
3594	\|\| RT_SUCCESS_NP(RTTimerRequestSystemGranularity( 1953125 /* 512 HZ */, &u32SystemResolution))
3595	\|\| RT_SUCCESS_NP(RTTimerRequestSystemGranularity( 2000000 /* 500 HZ */, &u32SystemResolution))
3596	)
3597	{
3598	Assert(RTTimerGetSystemGranularity() <= u32SystemResolution);
3599	pDevExt->u32SystemTimerGranularityGrant = u32SystemResolution;
3600	}
3601
3602	if (pGipR0->aCPUs[0].u32TransactionId != 2 /* not the first time */)
3603	{
3604	for (i = 0; i < RT_ELEMENTS(pGipR0->aCPUs); i++)
3605	ASMAtomicUoWriteU32(&pGipR0->aCPUs[i].u32TransactionId,
3606	(pGipR0->aCPUs[i].u32TransactionId + GIP_UPDATEHZ_RECALC_FREQ * 2)
3607	& ~(GIP_UPDATEHZ_RECALC_FREQ * 2 - 1));
3608	ASMAtomicWriteU64(&pGipR0->u64NanoTSLastUpdateHz, 0);
3609	}
3610
3611	u64NanoTS = RTTimeSystemNanoTS() - pGipR0->u32UpdateIntervalNS;
3612	if ( pGipR0->u32Mode == SUPGIPMODE_SYNC_TSC
3613	\|\| RTMpGetOnlineCount() == 1)
3614	supdrvGipReInitCpu(&pGipR0->aCPUs[0], u64NanoTS);
3615	else
3616	RTMpOnAll(supdrvGipReInitCpuCallback, pGipR0, &u64NanoTS);
3617
3618	#ifndef DO_NOT_START_GIP
3619	rc = RTTimerStart(pDevExt->pGipTimer, 0); AssertRC(rc);
3620	#endif
3621	rc = VINF_SUCCESS;
3622	}
3623	}
3624	}
3625	else
3626	{
3627	rc = VERR_GENERAL_FAILURE;
3628	Log(("SUPR0GipMap: GIP is not available!\n"));
3629	}
3630	#ifdef SUPDRV_USE_MUTEX_FOR_GIP
3631	RTSemMutexRelease(pDevExt->mtxGip);
3632	#else
3633	RTSemFastMutexRelease(pDevExt->mtxGip);
3634	#endif
3635
3636	/*
3637	* Write returns.
3638	*/
3639	if (pHCPhysGip)
3640	*pHCPhysGip = HCPhys;
3641	if (ppGipR3)
3642	*ppGipR3 = pGipR3;
3643
3644	#ifdef DEBUG_DARWIN_GIP
3645	OSDBGPRINT(("SUPR0GipMap: returns %d pHCPhysGip=%lx pGipR3=%p\n", rc, (unsigned long)HCPhys, (void )pGipR3));
3646	#else
3647	LogFlow(( "SUPR0GipMap: returns %d pHCPhysGip=%lx pGipR3=%p\n", rc, (unsigned long)HCPhys, (void )pGipR3));
3648	#endif
3649	return rc;
3650	}
3651
3652
3653	/**
3654	* Unmaps any user mapping of the GIP and terminates all GIP access
3655	* from this session.
3656	*
3657	* @returns IPRT status code.
3658	* @param pSession Session to which the GIP mapping should belong.
3659	*/
3660	SUPR0DECL(int) SUPR0GipUnmap(PSUPDRVSESSION pSession)
3661	{
3662	int rc = VINF_SUCCESS;
3663	PSUPDRVDEVEXT pDevExt = pSession->pDevExt;
3664	#ifdef DEBUG_DARWIN_GIP
3665	OSDBGPRINT(("SUPR0GipUnmap: pSession=%p pGip=%p GipMapObjR3=%p\n",
3666	pSession,
3667	pSession->GipMapObjR3 != NIL_RTR0MEMOBJ ? RTR0MemObjAddress(pSession->GipMapObjR3) : NULL,
3668	pSession->GipMapObjR3));
3669	#else
3670	LogFlow(("SUPR0GipUnmap: pSession=%p\n", pSession));
3671	#endif
3672	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
3673
3674	#ifdef SUPDRV_USE_MUTEX_FOR_GIP
3675	RTSemMutexRequest(pDevExt->mtxGip, RT_INDEFINITE_WAIT);
3676	#else
3677	RTSemFastMutexRequest(pDevExt->mtxGip);
3678	#endif
3679
3680	/*
3681	* Unmap anything?
3682	*/
3683	if (pSession->GipMapObjR3 != NIL_RTR0MEMOBJ)
3684	{
3685	rc = RTR0MemObjFree(pSession->GipMapObjR3, false);
3686	AssertRC(rc);
3687	if (RT_SUCCESS(rc))
3688	pSession->GipMapObjR3 = NIL_RTR0MEMOBJ;
3689	}
3690
3691	/*
3692	* Dereference global GIP.
3693	*/
3694	if (pSession->fGipReferenced && !rc)
3695	{
3696	pSession->fGipReferenced = 0;
3697	if ( pDevExt->cGipUsers > 0
3698	&& !--pDevExt->cGipUsers)
3699	{
3700	LogFlow(("SUPR0GipUnmap: Suspends GIP updating\n"));
3701	#ifndef DO_NOT_START_GIP
3702	rc = RTTimerStop(pDevExt->pGipTimer); AssertRC(rc); rc = VINF_SUCCESS;
3703	#endif
3704
3705	if (pDevExt->u32SystemTimerGranularityGrant)
3706	{
3707	int rc2 = RTTimerReleaseSystemGranularity(pDevExt->u32SystemTimerGranularityGrant);
3708	AssertRC(rc2);
3709	pDevExt->u32SystemTimerGranularityGrant = 0;
3710	}
3711	}
3712	}
3713
3714	#ifdef SUPDRV_USE_MUTEX_FOR_GIP
3715	RTSemMutexRelease(pDevExt->mtxGip);
3716	#else
3717	RTSemFastMutexRelease(pDevExt->mtxGip);
3718	#endif
3719
3720	return rc;
3721	}
3722
3723
3724	/**
3725	* Gets the GIP pointer.
3726	*
3727	* @returns Pointer to the GIP or NULL.
3728	*/
3729	SUPDECL(PSUPGLOBALINFOPAGE) SUPGetGIP(void)
3730	{
3731	return g_pSUPGlobalInfoPage;
3732	}
3733
3734
3735	/**
3736	* Register a component factory with the support driver.
3737	*
3738	* This is currently restricted to kernel sessions only.
3739	*
3740	* @returns VBox status code.
3741	* @retval VINF_SUCCESS on success.
3742	* @retval VERR_NO_MEMORY if we're out of memory.
3743	* @retval VERR_ALREADY_EXISTS if the factory has already been registered.
3744	* @retval VERR_ACCESS_DENIED if it isn't a kernel session.
3745	* @retval VERR_INVALID_PARAMETER on invalid parameter.
3746	* @retval VERR_INVALID_POINTER on invalid pointer parameter.
3747	*
3748	* @param pSession The SUPDRV session (must be a ring-0 session).
3749	* @param pFactory Pointer to the component factory registration structure.
3750	*
3751	* @remarks This interface is also available via SUPR0IdcComponentRegisterFactory.
3752	*/
3753	SUPR0DECL(int) SUPR0ComponentRegisterFactory(PSUPDRVSESSION pSession, PCSUPDRVFACTORY pFactory)
3754	{
3755	PSUPDRVFACTORYREG pNewReg;
3756	const char *psz;
3757	int rc;
3758
3759	/*
3760	* Validate parameters.
3761	*/
3762	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
3763	AssertReturn(pSession->R0Process == NIL_RTR0PROCESS, VERR_ACCESS_DENIED);
3764	AssertPtrReturn(pFactory, VERR_INVALID_POINTER);
3765	AssertPtrReturn(pFactory->pfnQueryFactoryInterface, VERR_INVALID_POINTER);
3766	psz = RTStrEnd(pFactory->szName, sizeof(pFactory->szName));
3767	AssertReturn(psz, VERR_INVALID_PARAMETER);
3768
3769	/*
3770	* Allocate and initialize a new registration structure.
3771	*/
3772	pNewReg = (PSUPDRVFACTORYREG)RTMemAlloc(sizeof(SUPDRVFACTORYREG));
3773	if (pNewReg)
3774	{
3775	pNewReg->pNext = NULL;
3776	pNewReg->pFactory = pFactory;
3777	pNewReg->pSession = pSession;
3778	pNewReg->cchName = psz - &pFactory->szName[0];
3779
3780	/*
3781	* Add it to the tail of the list after checking for prior registration.
3782	*/
3783	rc = RTSemFastMutexRequest(pSession->pDevExt->mtxComponentFactory);
3784	if (RT_SUCCESS(rc))
3785	{
3786	PSUPDRVFACTORYREG pPrev = NULL;
3787	PSUPDRVFACTORYREG pCur = pSession->pDevExt->pComponentFactoryHead;
3788	while (pCur && pCur->pFactory != pFactory)
3789	{
3790	pPrev = pCur;
3791	pCur = pCur->pNext;
3792	}
3793	if (!pCur)
3794	{
3795	if (pPrev)
3796	pPrev->pNext = pNewReg;
3797	else
3798	pSession->pDevExt->pComponentFactoryHead = pNewReg;
3799	rc = VINF_SUCCESS;
3800	}
3801	else
3802	rc = VERR_ALREADY_EXISTS;
3803
3804	RTSemFastMutexRelease(pSession->pDevExt->mtxComponentFactory);
3805	}
3806
3807	if (RT_FAILURE(rc))
3808	RTMemFree(pNewReg);
3809	}
3810	else
3811	rc = VERR_NO_MEMORY;
3812	return rc;
3813	}
3814
3815
3816	/**
3817	* Deregister a component factory.
3818	*
3819	* @returns VBox status code.
3820	* @retval VINF_SUCCESS on success.
3821	* @retval VERR_NOT_FOUND if the factory wasn't registered.
3822	* @retval VERR_ACCESS_DENIED if it isn't a kernel session.
3823	* @retval VERR_INVALID_PARAMETER on invalid parameter.
3824	* @retval VERR_INVALID_POINTER on invalid pointer parameter.
3825	*
3826	* @param pSession The SUPDRV session (must be a ring-0 session).
3827	* @param pFactory Pointer to the component factory registration structure
3828	* previously passed SUPR0ComponentRegisterFactory().
3829	*
3830	* @remarks This interface is also available via SUPR0IdcComponentDeregisterFactory.
3831	*/
3832	SUPR0DECL(int) SUPR0ComponentDeregisterFactory(PSUPDRVSESSION pSession, PCSUPDRVFACTORY pFactory)
3833	{
3834	int rc;
3835
3836	/*
3837	* Validate parameters.
3838	*/
3839	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
3840	AssertReturn(pSession->R0Process == NIL_RTR0PROCESS, VERR_ACCESS_DENIED);
3841	AssertPtrReturn(pFactory, VERR_INVALID_POINTER);
3842
3843	/*
3844	* Take the lock and look for the registration record.
3845	*/
3846	rc = RTSemFastMutexRequest(pSession->pDevExt->mtxComponentFactory);
3847	if (RT_SUCCESS(rc))
3848	{
3849	PSUPDRVFACTORYREG pPrev = NULL;
3850	PSUPDRVFACTORYREG pCur = pSession->pDevExt->pComponentFactoryHead;
3851	while (pCur && pCur->pFactory != pFactory)
3852	{
3853	pPrev = pCur;
3854	pCur = pCur->pNext;
3855	}
3856	if (pCur)
3857	{
3858	if (!pPrev)
3859	pSession->pDevExt->pComponentFactoryHead = pCur->pNext;
3860	else
3861	pPrev->pNext = pCur->pNext;
3862
3863	pCur->pNext = NULL;
3864	pCur->pFactory = NULL;
3865	pCur->pSession = NULL;
3866	rc = VINF_SUCCESS;
3867	}
3868	else
3869	rc = VERR_NOT_FOUND;
3870
3871	RTSemFastMutexRelease(pSession->pDevExt->mtxComponentFactory);
3872
3873	RTMemFree(pCur);
3874	}
3875	return rc;
3876	}
3877
3878
3879	/**
3880	* Queries a component factory.
3881	*
3882	* @returns VBox status code.
3883	* @retval VERR_INVALID_PARAMETER on invalid parameter.
3884	* @retval VERR_INVALID_POINTER on invalid pointer parameter.
3885	* @retval VERR_SUPDRV_COMPONENT_NOT_FOUND if the component factory wasn't found.
3886	* @retval VERR_SUPDRV_INTERFACE_NOT_SUPPORTED if the interface wasn't supported.
3887	*
3888	* @param pSession The SUPDRV session.
3889	* @param pszName The name of the component factory.
3890	* @param pszInterfaceUuid The UUID of the factory interface (stringified).
3891	* @param ppvFactoryIf Where to store the factory interface.
3892	*/
3893	SUPR0DECL(int) SUPR0ComponentQueryFactory(PSUPDRVSESSION pSession, const char pszName, const char pszInterfaceUuid, void **ppvFactoryIf)
3894	{
3895	const char *pszEnd;
3896	size_t cchName;
3897	int rc;
3898
3899	/*
3900	* Validate parameters.
3901	*/
3902	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
3903
3904	AssertPtrReturn(pszName, VERR_INVALID_POINTER);
3905	pszEnd = RTStrEnd(pszName, RT_SIZEOFMEMB(SUPDRVFACTORY, szName));
3906	AssertReturn(pszEnd, VERR_INVALID_PARAMETER);
3907	cchName = pszEnd - pszName;
3908
3909	AssertPtrReturn(pszInterfaceUuid, VERR_INVALID_POINTER);
3910	pszEnd = RTStrEnd(pszInterfaceUuid, RTUUID_STR_LENGTH);
3911	AssertReturn(pszEnd, VERR_INVALID_PARAMETER);
3912
3913	AssertPtrReturn(ppvFactoryIf, VERR_INVALID_POINTER);
3914	*ppvFactoryIf = NULL;
3915
3916	/*
3917	* Take the lock and try all factories by this name.
3918	*/
3919	rc = RTSemFastMutexRequest(pSession->pDevExt->mtxComponentFactory);
3920	if (RT_SUCCESS(rc))
3921	{
3922	PSUPDRVFACTORYREG pCur = pSession->pDevExt->pComponentFactoryHead;
3923	rc = VERR_SUPDRV_COMPONENT_NOT_FOUND;
3924	while (pCur)
3925	{
3926	if ( pCur->cchName == cchName
3927	&& !memcmp(pCur->pFactory->szName, pszName, cchName))
3928	{
3929	void *pvFactory = pCur->pFactory->pfnQueryFactoryInterface(pCur->pFactory, pSession, pszInterfaceUuid);
3930	if (pvFactory)
3931	{
3932	*ppvFactoryIf = pvFactory;
3933	rc = VINF_SUCCESS;
3934	break;
3935	}
3936	rc = VERR_SUPDRV_INTERFACE_NOT_SUPPORTED;
3937	}
3938
3939	/* next */
3940	pCur = pCur->pNext;
3941	}
3942
3943	RTSemFastMutexRelease(pSession->pDevExt->mtxComponentFactory);
3944	}
3945	return rc;
3946	}
3947
3948
3949	/**
3950	* Adds a memory object to the session.
3951	*
3952	* @returns IPRT status code.
3953	* @param pMem Memory tracking structure containing the
3954	* information to track.
3955	* @param pSession The session.
3956	*/
3957	static int supdrvMemAdd(PSUPDRVMEMREF pMem, PSUPDRVSESSION pSession)
3958	{
3959	PSUPDRVBUNDLE pBundle;
3960
3961	/*
3962	* Find free entry and record the allocation.
3963	*/
3964	RTSpinlockAcquire(pSession->Spinlock);
3965	for (pBundle = &pSession->Bundle; pBundle; pBundle = pBundle->pNext)
3966	{
3967	if (pBundle->cUsed < RT_ELEMENTS(pBundle->aMem))
3968	{
3969	unsigned i;
3970	for (i = 0; i < RT_ELEMENTS(pBundle->aMem); i++)
3971	{
3972	if (pBundle->aMem[i].MemObj == NIL_RTR0MEMOBJ)
3973	{
3974	pBundle->cUsed++;
3975	pBundle->aMem[i] = *pMem;
3976	RTSpinlockRelease(pSession->Spinlock);
3977	return VINF_SUCCESS;
3978	}
3979	}
3980	AssertFailed(); /* !!this can't be happening!!! */
3981	}
3982	}
3983	RTSpinlockRelease(pSession->Spinlock);
3984
3985	/*
3986	* Need to allocate a new bundle.
3987	* Insert into the last entry in the bundle.
3988	*/
3989	pBundle = (PSUPDRVBUNDLE)RTMemAllocZ(sizeof(*pBundle));
3990	if (!pBundle)
3991	return VERR_NO_MEMORY;
3992
3993	/* take last entry. */
3994	pBundle->cUsed++;
3995	pBundle->aMem[RT_ELEMENTS(pBundle->aMem) - 1] = *pMem;
3996
3997	/* insert into list. */
3998	RTSpinlockAcquire(pSession->Spinlock);
3999	pBundle->pNext = pSession->Bundle.pNext;
4000	pSession->Bundle.pNext = pBundle;
4001	RTSpinlockRelease(pSession->Spinlock);
4002
4003	return VINF_SUCCESS;
4004	}
4005
4006
4007	/**
4008	* Releases a memory object referenced by pointer and type.
4009	*
4010	* @returns IPRT status code.
4011	* @param pSession Session data.
4012	* @param uPtr Pointer to memory. This is matched against both the R0 and R3 addresses.
4013	* @param eType Memory type.
4014	*/
4015	static int supdrvMemRelease(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr, SUPDRVMEMREFTYPE eType)
4016	{
4017	PSUPDRVBUNDLE pBundle;
4018
4019	/*
4020	* Validate input.
4021	*/
4022	if (!uPtr)
4023	{
4024	Log(("Illegal address %p\n", (void *)uPtr));
4025	return VERR_INVALID_PARAMETER;
4026	}
4027
4028	/*
4029	* Search for the address.
4030	*/
4031	RTSpinlockAcquire(pSession->Spinlock);
4032	for (pBundle = &pSession->Bundle; pBundle; pBundle = pBundle->pNext)
4033	{
4034	if (pBundle->cUsed > 0)
4035	{
4036	unsigned i;
4037	for (i = 0; i < RT_ELEMENTS(pBundle->aMem); i++)
4038	{
4039	if ( pBundle->aMem[i].eType == eType
4040	&& pBundle->aMem[i].MemObj != NIL_RTR0MEMOBJ
4041	&& ( (RTHCUINTPTR)RTR0MemObjAddress(pBundle->aMem[i].MemObj) == uPtr
4042	\|\| ( pBundle->aMem[i].MapObjR3 != NIL_RTR0MEMOBJ
4043	&& RTR0MemObjAddressR3(pBundle->aMem[i].MapObjR3) == uPtr))
4044	)
4045	{
4046	/* Make a copy of it and release it outside the spinlock. */
4047	SUPDRVMEMREF Mem = pBundle->aMem[i];
4048	pBundle->aMem[i].eType = MEMREF_TYPE_UNUSED;
4049	pBundle->aMem[i].MemObj = NIL_RTR0MEMOBJ;
4050	pBundle->aMem[i].MapObjR3 = NIL_RTR0MEMOBJ;
4051	RTSpinlockRelease(pSession->Spinlock);
4052
4053	if (Mem.MapObjR3 != NIL_RTR0MEMOBJ)
4054	{
4055	int rc = RTR0MemObjFree(Mem.MapObjR3, false);
4056	AssertRC(rc); /** @todo figure out how to handle this. */
4057	}
4058	if (Mem.MemObj != NIL_RTR0MEMOBJ)
4059	{
4060	int rc = RTR0MemObjFree(Mem.MemObj, true /* fFreeMappings */);
4061	AssertRC(rc); /** @todo figure out how to handle this. */
4062	}
4063	return VINF_SUCCESS;
4064	}
4065	}
4066	}
4067	}
4068	RTSpinlockRelease(pSession->Spinlock);
4069	Log(("Failed to find %p!!! (eType=%d)\n", (void *)uPtr, eType));
4070	return VERR_INVALID_PARAMETER;
4071	}
4072
4073
4074	/**
4075	* Opens an image. If it's the first time it's opened the call must upload
4076	* the bits using the supdrvIOCtl_LdrLoad() / SUPDRV_IOCTL_LDR_LOAD function.
4077	*
4078	* This is the 1st step of the loading.
4079	*
4080	* @returns IPRT status code.
4081	* @param pDevExt Device globals.
4082	* @param pSession Session data.
4083	* @param pReq The open request.
4084	*/
4085	static int supdrvIOCtl_LdrOpen(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLDROPEN pReq)
4086	{
4087	int rc;
4088	PSUPDRVLDRIMAGE pImage;
4089	void *pv;
4090	size_t cchName = strlen(pReq->u.In.szName); /* (caller checked < 32). */
4091	LogFlow(("supdrvIOCtl_LdrOpen: szName=%s cbImageWithTabs=%d\n", pReq->u.In.szName, pReq->u.In.cbImageWithTabs));
4092
4093	/*
4094	* Check if we got an instance of the image already.
4095	*/
4096	supdrvLdrLock(pDevExt);
4097	for (pImage = pDevExt->pLdrImages; pImage; pImage = pImage->pNext)
4098	{
4099	if ( pImage->szName[cchName] == '\0'
4100	&& !memcmp(pImage->szName, pReq->u.In.szName, cchName))
4101	{
4102	/** @todo check cbImageBits and cbImageWithTabs here, if they differs that indicates that the images are different. */
4103	pImage->cUsage++;
4104	pReq->u.Out.pvImageBase = pImage->pvImage;
4105	pReq->u.Out.fNeedsLoading = pImage->uState == SUP_IOCTL_LDR_OPEN;
4106	pReq->u.Out.fNativeLoader = pImage->fNative;
4107	supdrvLdrAddUsage(pSession, pImage);
4108	supdrvLdrUnlock(pDevExt);
4109	return VINF_SUCCESS;
4110	}
4111	}
4112	/* (not found - add it!) */
4113
4114	/*
4115	* Allocate memory.
4116	*/
4117	Assert(cchName < sizeof(pImage->szName));
4118	pv = RTMemAlloc(sizeof(SUPDRVLDRIMAGE));
4119	if (!pv)
4120	{
4121	supdrvLdrUnlock(pDevExt);
4122	Log(("supdrvIOCtl_LdrOpen: RTMemAlloc() failed\n"));
4123	return /VERR_NO_MEMORY/ VERR_INTERNAL_ERROR_2;
4124	}
4125
4126	/*
4127	* Setup and link in the LDR stuff.
4128	*/
4129	pImage = (PSUPDRVLDRIMAGE)pv;
4130	pImage->pvImage = NULL;
4131	pImage->pvImageAlloc = NULL;
4132	pImage->cbImageWithTabs = pReq->u.In.cbImageWithTabs;
4133	pImage->cbImageBits = pReq->u.In.cbImageBits;
4134	pImage->cSymbols = 0;
4135	pImage->paSymbols = NULL;
4136	pImage->pachStrTab = NULL;
4137	pImage->cbStrTab = 0;
4138	pImage->pfnModuleInit = NULL;
4139	pImage->pfnModuleTerm = NULL;
4140	pImage->pfnServiceReqHandler = NULL;
4141	pImage->uState = SUP_IOCTL_LDR_OPEN;
4142	pImage->cUsage = 1;
4143	pImage->pDevExt = pDevExt;
4144	memcpy(pImage->szName, pReq->u.In.szName, cchName + 1);
4145
4146	/*
4147	* Try load it using the native loader, if that isn't supported, fall back
4148	* on the older method.
4149	*/
4150	pImage->fNative = true;
4151	rc = supdrvOSLdrOpen(pDevExt, pImage, pReq->u.In.szFilename);
4152	if (rc == VERR_NOT_SUPPORTED)
4153	{
4154	pImage->pvImageAlloc = RTMemExecAlloc(pImage->cbImageBits + 31);
4155	pImage->pvImage = RT_ALIGN_P(pImage->pvImageAlloc, 32);
4156	pImage->fNative = false;
4157	rc = pImage->pvImageAlloc ? VINF_SUCCESS : VERR_NO_EXEC_MEMORY;
4158	}
4159	if (RT_FAILURE(rc))
4160	{
4161	supdrvLdrUnlock(pDevExt);
4162	RTMemFree(pImage);
4163	Log(("supdrvIOCtl_LdrOpen(%s): failed - %Rrc\n", pReq->u.In.szName, rc));
4164	return rc;
4165	}
4166	Assert(VALID_PTR(pImage->pvImage) \|\| RT_FAILURE(rc));
4167
4168	/*
4169	* Link it.
4170	*/
4171	pImage->pNext = pDevExt->pLdrImages;
4172	pDevExt->pLdrImages = pImage;
4173
4174	supdrvLdrAddUsage(pSession, pImage);
4175
4176	pReq->u.Out.pvImageBase = pImage->pvImage;
4177	pReq->u.Out.fNeedsLoading = true;
4178	pReq->u.Out.fNativeLoader = pImage->fNative;
4179	supdrvOSLdrNotifyOpened(pDevExt, pImage);
4180
4181	supdrvLdrUnlock(pDevExt);
4182	return VINF_SUCCESS;
4183	}
4184
4185
4186	/**
4187	* Worker that validates a pointer to an image entrypoint.
4188	*
4189	* @returns IPRT status code.
4190	* @param pDevExt The device globals.
4191	* @param pImage The loader image.
4192	* @param pv The pointer into the image.
4193	* @param fMayBeNull Whether it may be NULL.
4194	* @param pszWhat What is this entrypoint? (for logging)
4195	* @param pbImageBits The image bits prepared by ring-3.
4196	*
4197	* @remarks Will leave the lock on failure.
4198	*/
4199	static int supdrvLdrValidatePointer(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, void *pv,
4200	bool fMayBeNull, const uint8_t pbImageBits, const char pszWhat)
4201	{
4202	if (!fMayBeNull \|\| pv)
4203	{
4204	if ((uintptr_t)pv - (uintptr_t)pImage->pvImage >= pImage->cbImageBits)
4205	{
4206	supdrvLdrUnlock(pDevExt);
4207	Log(("Out of range (%p LB %#x): %s=%p\n", pImage->pvImage, pImage->cbImageBits, pszWhat, pv));
4208	return VERR_INVALID_PARAMETER;
4209	}
4210
4211	if (pImage->fNative)
4212	{
4213	int rc = supdrvOSLdrValidatePointer(pDevExt, pImage, pv, pbImageBits);
4214	if (RT_FAILURE(rc))
4215	{
4216	supdrvLdrUnlock(pDevExt);
4217	Log(("Bad entry point address: %s=%p (rc=%Rrc)\n", pszWhat, pv, rc));
4218	return rc;
4219	}
4220	}
4221	}
4222	return VINF_SUCCESS;
4223	}
4224
4225
4226	/**
4227	* Loads the image bits.
4228	*
4229	* This is the 2nd step of the loading.
4230	*
4231	* @returns IPRT status code.
4232	* @param pDevExt Device globals.
4233	* @param pSession Session data.
4234	* @param pReq The request.
4235	*/
4236	static int supdrvIOCtl_LdrLoad(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLDRLOAD pReq)
4237	{
4238	PSUPDRVLDRUSAGE pUsage;
4239	PSUPDRVLDRIMAGE pImage;
4240	int rc;
4241	LogFlow(("supdrvIOCtl_LdrLoad: pvImageBase=%p cbImageWithBits=%d\n", pReq->u.In.pvImageBase, pReq->u.In.cbImageWithTabs));
4242
4243	/*
4244	* Find the ldr image.
4245	*/
4246	supdrvLdrLock(pDevExt);
4247	pUsage = pSession->pLdrUsage;
4248	while (pUsage && pUsage->pImage->pvImage != pReq->u.In.pvImageBase)
4249	pUsage = pUsage->pNext;
4250	if (!pUsage)
4251	{
4252	supdrvLdrUnlock(pDevExt);
4253	Log(("SUP_IOCTL_LDR_LOAD: couldn't find image!\n"));
4254	return VERR_INVALID_HANDLE;
4255	}
4256	pImage = pUsage->pImage;
4257
4258	/*
4259	* Validate input.
4260	*/
4261	if ( pImage->cbImageWithTabs != pReq->u.In.cbImageWithTabs
4262	\|\| pImage->cbImageBits != pReq->u.In.cbImageBits)
4263	{
4264	supdrvLdrUnlock(pDevExt);
4265	Log(("SUP_IOCTL_LDR_LOAD: image size mismatch!! %d(prep) != %d(load) or %d != %d\n",
4266	pImage->cbImageWithTabs, pReq->u.In.cbImageWithTabs, pImage->cbImageBits, pReq->u.In.cbImageBits));
4267	return VERR_INVALID_HANDLE;
4268	}
4269
4270	if (pImage->uState != SUP_IOCTL_LDR_OPEN)
4271	{
4272	unsigned uState = pImage->uState;
4273	supdrvLdrUnlock(pDevExt);
4274	if (uState != SUP_IOCTL_LDR_LOAD)
4275	AssertMsgFailed(("SUP_IOCTL_LDR_LOAD: invalid image state %d (%#x)!\n", uState, uState));
4276	return VERR_ALREADY_LOADED;
4277	}
4278
4279	switch (pReq->u.In.eEPType)
4280	{
4281	case SUPLDRLOADEP_NOTHING:
4282	break;
4283
4284	case SUPLDRLOADEP_VMMR0:
4285	rc = supdrvLdrValidatePointer( pDevExt, pImage, pReq->u.In.EP.VMMR0.pvVMMR0, false, pReq->u.In.abImage, "pvVMMR0");
4286	if (RT_SUCCESS(rc))
4287	rc = supdrvLdrValidatePointer(pDevExt, pImage, pReq->u.In.EP.VMMR0.pvVMMR0EntryInt, false, pReq->u.In.abImage, "pvVMMR0EntryInt");
4288	if (RT_SUCCESS(rc))
4289	rc = supdrvLdrValidatePointer(pDevExt, pImage, pReq->u.In.EP.VMMR0.pvVMMR0EntryFast, false, pReq->u.In.abImage, "pvVMMR0EntryFast");
4290	if (RT_SUCCESS(rc))
4291	rc = supdrvLdrValidatePointer(pDevExt, pImage, pReq->u.In.EP.VMMR0.pvVMMR0EntryEx, false, pReq->u.In.abImage, "pvVMMR0EntryEx");
4292	if (RT_FAILURE(rc))
4293	return rc;
4294	break;
4295
4296	case SUPLDRLOADEP_SERVICE:
4297	rc = supdrvLdrValidatePointer(pDevExt, pImage, pReq->u.In.EP.Service.pfnServiceReq, false, pReq->u.In.abImage, "pfnServiceReq");
4298	if (RT_FAILURE(rc))
4299	return rc;
4300	if ( pReq->u.In.EP.Service.apvReserved[0] != NIL_RTR0PTR
4301	\|\| pReq->u.In.EP.Service.apvReserved[1] != NIL_RTR0PTR
4302	\|\| pReq->u.In.EP.Service.apvReserved[2] != NIL_RTR0PTR)
4303	{
4304	supdrvLdrUnlock(pDevExt);
4305	Log(("Out of range (%p LB %#x): apvReserved={%p,%p,%p} MBZ!\n",
4306	pImage->pvImage, pReq->u.In.cbImageWithTabs,
4307	pReq->u.In.EP.Service.apvReserved[0],
4308	pReq->u.In.EP.Service.apvReserved[1],
4309	pReq->u.In.EP.Service.apvReserved[2]));
4310	return VERR_INVALID_PARAMETER;
4311	}
4312	break;
4313
4314	default:
4315	supdrvLdrUnlock(pDevExt);
4316	Log(("Invalid eEPType=%d\n", pReq->u.In.eEPType));
4317	return VERR_INVALID_PARAMETER;
4318	}
4319
4320	rc = supdrvLdrValidatePointer(pDevExt, pImage, pReq->u.In.pfnModuleInit, true, pReq->u.In.abImage, "pfnModuleInit");
4321	if (RT_FAILURE(rc))
4322	return rc;
4323	rc = supdrvLdrValidatePointer(pDevExt, pImage, pReq->u.In.pfnModuleTerm, true, pReq->u.In.abImage, "pfnModuleTerm");
4324	if (RT_FAILURE(rc))
4325	return rc;
4326
4327	/*
4328	* Allocate and copy the tables.
4329	* (No need to do try/except as this is a buffered request.)
4330	*/
4331	pImage->cbStrTab = pReq->u.In.cbStrTab;
4332	if (pImage->cbStrTab)
4333	{
4334	pImage->pachStrTab = (char *)RTMemAlloc(pImage->cbStrTab);
4335	if (pImage->pachStrTab)
4336	memcpy(pImage->pachStrTab, &pReq->u.In.abImage[pReq->u.In.offStrTab], pImage->cbStrTab);
4337	else
4338	rc = /VERR_NO_MEMORY/ VERR_INTERNAL_ERROR_3;
4339	}
4340
4341	pImage->cSymbols = pReq->u.In.cSymbols;
4342	if (RT_SUCCESS(rc) && pImage->cSymbols)
4343	{
4344	size_t cbSymbols = pImage->cSymbols * sizeof(SUPLDRSYM);
4345	pImage->paSymbols = (PSUPLDRSYM)RTMemAlloc(cbSymbols);
4346	if (pImage->paSymbols)
4347	memcpy(pImage->paSymbols, &pReq->u.In.abImage[pReq->u.In.offSymbols], cbSymbols);
4348	else
4349	rc = /VERR_NO_MEMORY/ VERR_INTERNAL_ERROR_4;
4350	}
4351
4352	/*
4353	* Copy the bits / complete native loading.
4354	*/
4355	if (RT_SUCCESS(rc))
4356	{
4357	pImage->uState = SUP_IOCTL_LDR_LOAD;
4358	pImage->pfnModuleInit = pReq->u.In.pfnModuleInit;
4359	pImage->pfnModuleTerm = pReq->u.In.pfnModuleTerm;
4360
4361	if (pImage->fNative)
4362	rc = supdrvOSLdrLoad(pDevExt, pImage, pReq->u.In.abImage, pReq);
4363	else
4364	{
4365	memcpy(pImage->pvImage, &pReq->u.In.abImage[0], pImage->cbImageBits);
4366	Log(("vboxdrv: Loaded '%s' at %p\n", pImage->szName, pImage->pvImage));
4367	}
4368	}
4369
4370	/*
4371	* Update any entry points.
4372	*/
4373	if (RT_SUCCESS(rc))
4374	{
4375	switch (pReq->u.In.eEPType)
4376	{
4377	default:
4378	case SUPLDRLOADEP_NOTHING:
4379	rc = VINF_SUCCESS;
4380	break;
4381	case SUPLDRLOADEP_VMMR0:
4382	rc = supdrvLdrSetVMMR0EPs(pDevExt, pReq->u.In.EP.VMMR0.pvVMMR0, pReq->u.In.EP.VMMR0.pvVMMR0EntryInt,
4383	pReq->u.In.EP.VMMR0.pvVMMR0EntryFast, pReq->u.In.EP.VMMR0.pvVMMR0EntryEx);
4384	break;
4385	case SUPLDRLOADEP_SERVICE:
4386	pImage->pfnServiceReqHandler = pReq->u.In.EP.Service.pfnServiceReq;
4387	rc = VINF_SUCCESS;
4388	break;
4389	}
4390	}
4391
4392	/*
4393	* On success call the module initialization.
4394	*/
4395	LogFlow(("supdrvIOCtl_LdrLoad: pfnModuleInit=%p\n", pImage->pfnModuleInit));
4396	if (RT_SUCCESS(rc) && pImage->pfnModuleInit)
4397	{
4398	Log(("supdrvIOCtl_LdrLoad: calling pfnModuleInit=%p\n", pImage->pfnModuleInit));
4399	pDevExt->pLdrInitImage = pImage;
4400	pDevExt->hLdrInitThread = RTThreadNativeSelf();
4401	rc = pImage->pfnModuleInit(pImage);
4402	pDevExt->pLdrInitImage = NULL;
4403	pDevExt->hLdrInitThread = NIL_RTNATIVETHREAD;
4404	if (RT_FAILURE(rc) && pDevExt->pvVMMR0 == pImage->pvImage)
4405	supdrvLdrUnsetVMMR0EPs(pDevExt);
4406	}
4407
4408	if (RT_FAILURE(rc))
4409	{
4410	/* Inform the tracing component in case ModuleInit registered TPs. */
4411	supdrvTracerModuleUnloading(pDevExt, pImage);
4412
4413	pImage->uState = SUP_IOCTL_LDR_OPEN;
4414	pImage->pfnModuleInit = NULL;
4415	pImage->pfnModuleTerm = NULL;
4416	pImage->pfnServiceReqHandler= NULL;
4417	pImage->cbStrTab = 0;
4418	RTMemFree(pImage->pachStrTab);
4419	pImage->pachStrTab = NULL;
4420	RTMemFree(pImage->paSymbols);
4421	pImage->paSymbols = NULL;
4422	pImage->cSymbols = 0;
4423	}
4424
4425	supdrvLdrUnlock(pDevExt);
4426	return rc;
4427	}
4428
4429
4430	/**
4431	* Frees a previously loaded (prep'ed) image.
4432	*
4433	* @returns IPRT status code.
4434	* @param pDevExt Device globals.
4435	* @param pSession Session data.
4436	* @param pReq The request.
4437	*/
4438	static int supdrvIOCtl_LdrFree(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLDRFREE pReq)
4439	{
4440	int rc;
4441	PSUPDRVLDRUSAGE pUsagePrev;
4442	PSUPDRVLDRUSAGE pUsage;
4443	PSUPDRVLDRIMAGE pImage;
4444	LogFlow(("supdrvIOCtl_LdrFree: pvImageBase=%p\n", pReq->u.In.pvImageBase));
4445
4446	/*
4447	* Find the ldr image.
4448	*/
4449	supdrvLdrLock(pDevExt);
4450	pUsagePrev = NULL;
4451	pUsage = pSession->pLdrUsage;
4452	while (pUsage && pUsage->pImage->pvImage != pReq->u.In.pvImageBase)
4453	{
4454	pUsagePrev = pUsage;
4455	pUsage = pUsage->pNext;
4456	}
4457	if (!pUsage)
4458	{
4459	supdrvLdrUnlock(pDevExt);
4460	Log(("SUP_IOCTL_LDR_FREE: couldn't find image!\n"));
4461	return VERR_INVALID_HANDLE;
4462	}
4463
4464	/*
4465	* Check if we can remove anything.
4466	*/
4467	rc = VINF_SUCCESS;
4468	pImage = pUsage->pImage;
4469	if (pImage->cUsage <= 1 \|\| pUsage->cUsage <= 1)
4470	{
4471	/*
4472	* Check if there are any objects with destructors in the image, if
4473	* so leave it for the session cleanup routine so we get a chance to
4474	* clean things up in the right order and not leave them all dangling.
4475	*/
4476	RTSpinlockAcquire(pDevExt->Spinlock);
4477	if (pImage->cUsage <= 1)
4478	{
4479	PSUPDRVOBJ pObj;
4480	for (pObj = pDevExt->pObjs; pObj; pObj = pObj->pNext)
4481	if (RT_UNLIKELY((uintptr_t)pObj->pfnDestructor - (uintptr_t)pImage->pvImage < pImage->cbImageBits))
4482	{
4483	rc = VERR_DANGLING_OBJECTS;
4484	break;
4485	}
4486	}
4487	else
4488	{
4489	PSUPDRVUSAGE pGenUsage;
4490	for (pGenUsage = pSession->pUsage; pGenUsage; pGenUsage = pGenUsage->pNext)
4491	if (RT_UNLIKELY((uintptr_t)pGenUsage->pObj->pfnDestructor - (uintptr_t)pImage->pvImage < pImage->cbImageBits))
4492	{
4493	rc = VERR_DANGLING_OBJECTS;
4494	break;
4495	}
4496	}
4497	RTSpinlockRelease(pDevExt->Spinlock);
4498	if (rc == VINF_SUCCESS)
4499	{
4500	/* unlink it */
4501	if (pUsagePrev)
4502	pUsagePrev->pNext = pUsage->pNext;
4503	else
4504	pSession->pLdrUsage = pUsage->pNext;
4505
4506	/* free it */
4507	pUsage->pImage = NULL;
4508	pUsage->pNext = NULL;
4509	RTMemFree(pUsage);
4510
4511	/*
4512	* Dereference the image.
4513	*/
4514	if (pImage->cUsage <= 1)
4515	supdrvLdrFree(pDevExt, pImage);
4516	else
4517	pImage->cUsage--;
4518	}
4519	else
4520	{
4521	Log(("supdrvIOCtl_LdrFree: Dangling objects in %p/%s!\n", pImage->pvImage, pImage->szName));
4522	rc = VINF_SUCCESS; /** @todo BRANCH-2.1: remove this after branching. */
4523	}
4524	}
4525	else
4526	{
4527	/*
4528	* Dereference both image and usage.
4529	*/
4530	pImage->cUsage--;
4531	pUsage->cUsage--;
4532	}
4533
4534	supdrvLdrUnlock(pDevExt);
4535	return rc;
4536	}
4537
4538
4539	/**
4540	* Gets the address of a symbol in an open image.
4541	*
4542	* @returns IPRT status code.
4543	* @param pDevExt Device globals.
4544	* @param pSession Session data.
4545	* @param pReq The request buffer.
4546	*/
4547	static int supdrvIOCtl_LdrGetSymbol(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLDRGETSYMBOL pReq)
4548	{
4549	PSUPDRVLDRIMAGE pImage;
4550	PSUPDRVLDRUSAGE pUsage;
4551	uint32_t i;
4552	PSUPLDRSYM paSyms;
4553	const char *pchStrings;
4554	const size_t cbSymbol = strlen(pReq->u.In.szSymbol) + 1;
4555	void *pvSymbol = NULL;
4556	int rc = VERR_GENERAL_FAILURE;
4557	Log3(("supdrvIOCtl_LdrGetSymbol: pvImageBase=%p szSymbol=\"%s\"\n", pReq->u.In.pvImageBase, pReq->u.In.szSymbol));
4558
4559	/*
4560	* Find the ldr image.
4561	*/
4562	supdrvLdrLock(pDevExt);
4563	pUsage = pSession->pLdrUsage;
4564	while (pUsage && pUsage->pImage->pvImage != pReq->u.In.pvImageBase)
4565	pUsage = pUsage->pNext;
4566	if (!pUsage)
4567	{
4568	supdrvLdrUnlock(pDevExt);
4569	Log(("SUP_IOCTL_LDR_GET_SYMBOL: couldn't find image!\n"));
4570	return VERR_INVALID_HANDLE;
4571	}
4572	pImage = pUsage->pImage;
4573	if (pImage->uState != SUP_IOCTL_LDR_LOAD)
4574	{
4575	unsigned uState = pImage->uState;
4576	supdrvLdrUnlock(pDevExt);
4577	Log(("SUP_IOCTL_LDR_GET_SYMBOL: invalid image state %d (%#x)!\n", uState, uState)); NOREF(uState);
4578	return VERR_ALREADY_LOADED;
4579	}
4580
4581	/*
4582	* Search the symbol strings.
4583	*
4584	* Note! The int32_t is for native loading on solaris where the data
4585	* and text segments are in very different places.
4586	*/
4587	pchStrings = pImage->pachStrTab;
4588	paSyms = pImage->paSymbols;
4589	for (i = 0; i < pImage->cSymbols; i++)
4590	{
4591	if ( paSyms[i].offName + cbSymbol <= pImage->cbStrTab
4592	&& !memcmp(pchStrings + paSyms[i].offName, pReq->u.In.szSymbol, cbSymbol))
4593	{
4594	pvSymbol = (uint8_t *)pImage->pvImage + (int32_t)paSyms[i].offSymbol;
4595	rc = VINF_SUCCESS;
4596	break;
4597	}
4598	}
4599	supdrvLdrUnlock(pDevExt);
4600	pReq->u.Out.pvSymbol = pvSymbol;
4601	return rc;
4602	}
4603
4604
4605	/**
4606	* Gets the address of a symbol in an open image or the support driver.
4607	*
4608	* @returns VINF_SUCCESS on success.
4609	* @returns
4610	* @param pDevExt Device globals.
4611	* @param pSession Session data.
4612	* @param pReq The request buffer.
4613	*/
4614	static int supdrvIDC_LdrGetSymbol(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPDRVIDCREQGETSYM pReq)
4615	{
4616	int rc = VINF_SUCCESS;
4617	const char *pszSymbol = pReq->u.In.pszSymbol;
4618	const char *pszModule = pReq->u.In.pszModule;
4619	size_t cbSymbol;
4620	char const *pszEnd;
4621	uint32_t i;
4622
4623	/*
4624	* Input validation.
4625	*/
4626	AssertPtrReturn(pszSymbol, VERR_INVALID_POINTER);
4627	pszEnd = RTStrEnd(pszSymbol, 512);
4628	AssertReturn(pszEnd, VERR_INVALID_PARAMETER);
4629	cbSymbol = pszEnd - pszSymbol + 1;
4630
4631	if (pszModule)
4632	{
4633	AssertPtrReturn(pszModule, VERR_INVALID_POINTER);
4634	pszEnd = RTStrEnd(pszModule, 64);
4635	AssertReturn(pszEnd, VERR_INVALID_PARAMETER);
4636	}
4637	Log3(("supdrvIDC_LdrGetSymbol: pszModule=%p:{%s} pszSymbol=%p:{%s}\n", pszModule, pszModule, pszSymbol, pszSymbol));
4638
4639
4640	if ( !pszModule
4641	\|\| !strcmp(pszModule, "SupDrv"))
4642	{
4643	/*
4644	* Search the support driver export table.
4645	*/
4646	for (i = 0; i < RT_ELEMENTS(g_aFunctions); i++)
4647	if (!strcmp(g_aFunctions[i].szName, pszSymbol))
4648	{
4649	pReq->u.Out.pfnSymbol = g_aFunctions[i].pfn;
4650	break;
4651	}
4652	}
4653	else
4654	{
4655	/*
4656	* Find the loader image.
4657	*/
4658	PSUPDRVLDRIMAGE pImage;
4659
4660	supdrvLdrLock(pDevExt);
4661
4662	for (pImage = pDevExt->pLdrImages; pImage; pImage = pImage->pNext)
4663	if (!strcmp(pImage->szName, pszModule))
4664	break;
4665	if (pImage && pImage->uState == SUP_IOCTL_LDR_LOAD)
4666	{
4667	/*
4668	* Search the symbol strings.
4669	*/
4670	const char *pchStrings = pImage->pachStrTab;
4671	PCSUPLDRSYM paSyms = pImage->paSymbols;
4672	for (i = 0; i < pImage->cSymbols; i++)
4673	{
4674	if ( paSyms[i].offName + cbSymbol <= pImage->cbStrTab
4675	&& !memcmp(pchStrings + paSyms[i].offName, pszSymbol, cbSymbol))
4676	{
4677	/*
4678	* Found it! Calc the symbol address and add a reference to the module.
4679	*/
4680	pReq->u.Out.pfnSymbol = (PFNRT)((uint8_t *)pImage->pvImage + (int32_t)paSyms[i].offSymbol);
4681	rc = supdrvLdrAddUsage(pSession, pImage);
4682	break;
4683	}
4684	}
4685	}
4686	else
4687	rc = pImage ? VERR_WRONG_ORDER : VERR_MODULE_NOT_FOUND;
4688
4689	supdrvLdrUnlock(pDevExt);
4690	}
4691	return rc;
4692	}
4693
4694
4695	/**
4696	* Updates the VMMR0 entry point pointers.
4697	*
4698	* @returns IPRT status code.
4699	* @param pDevExt Device globals.
4700	* @param pSession Session data.
4701	* @param pVMMR0 VMMR0 image handle.
4702	* @param pvVMMR0EntryInt VMMR0EntryInt address.
4703	* @param pvVMMR0EntryFast VMMR0EntryFast address.
4704	* @param pvVMMR0EntryEx VMMR0EntryEx address.
4705	* @remark Caller must own the loader mutex.
4706	*/
4707	static int supdrvLdrSetVMMR0EPs(PSUPDRVDEVEXT pDevExt, void pvVMMR0, void pvVMMR0EntryInt, void pvVMMR0EntryFast, void pvVMMR0EntryEx)
4708	{
4709	int rc = VINF_SUCCESS;
4710	LogFlow(("supdrvLdrSetR0EP pvVMMR0=%p pvVMMR0EntryInt=%p\n", pvVMMR0, pvVMMR0EntryInt));
4711
4712
4713	/*
4714	* Check if not yet set.
4715	*/
4716	if (!pDevExt->pvVMMR0)
4717	{
4718	pDevExt->pvVMMR0 = pvVMMR0;
4719	pDevExt->pfnVMMR0EntryInt = pvVMMR0EntryInt;
4720	pDevExt->pfnVMMR0EntryFast = pvVMMR0EntryFast;
4721	pDevExt->pfnVMMR0EntryEx = pvVMMR0EntryEx;
4722	}
4723	else
4724	{
4725	/*
4726	* Return failure or success depending on whether the values match or not.
4727	*/
4728	if ( pDevExt->pvVMMR0 != pvVMMR0
4729	\|\| (void *)pDevExt->pfnVMMR0EntryInt != pvVMMR0EntryInt
4730	\|\| (void *)pDevExt->pfnVMMR0EntryFast != pvVMMR0EntryFast
4731	\|\| (void *)pDevExt->pfnVMMR0EntryEx != pvVMMR0EntryEx)
4732	{
4733	AssertMsgFailed(("SUP_IOCTL_LDR_SETR0EP: Already set pointing to a different module!\n"));
4734	rc = VERR_INVALID_PARAMETER;
4735	}
4736	}
4737	return rc;
4738	}
4739
4740
4741	/**
4742	* Unsets the VMMR0 entry point installed by supdrvLdrSetR0EP.
4743	*
4744	* @param pDevExt Device globals.
4745	*/
4746	static void supdrvLdrUnsetVMMR0EPs(PSUPDRVDEVEXT pDevExt)
4747	{
4748	pDevExt->pvVMMR0 = NULL;
4749	pDevExt->pfnVMMR0EntryInt = NULL;
4750	pDevExt->pfnVMMR0EntryFast = NULL;
4751	pDevExt->pfnVMMR0EntryEx = NULL;
4752	}
4753
4754
4755	/**
4756	* Adds a usage reference in the specified session of an image.
4757	*
4758	* Called while owning the loader semaphore.
4759	*
4760	* @returns VINF_SUCCESS on success and VERR_NO_MEMORY on failure.
4761	* @param pSession Session in question.
4762	* @param pImage Image which the session is using.
4763	*/
4764	static int supdrvLdrAddUsage(PSUPDRVSESSION pSession, PSUPDRVLDRIMAGE pImage)
4765	{
4766	PSUPDRVLDRUSAGE pUsage;
4767	LogFlow(("supdrvLdrAddUsage: pImage=%p\n", pImage));
4768
4769	/*
4770	* Referenced it already?
4771	*/
4772	pUsage = pSession->pLdrUsage;
4773	while (pUsage)
4774	{
4775	if (pUsage->pImage == pImage)
4776	{
4777	pUsage->cUsage++;
4778	return VINF_SUCCESS;
4779	}
4780	pUsage = pUsage->pNext;
4781	}
4782
4783	/*
4784	* Allocate new usage record.
4785	*/
4786	pUsage = (PSUPDRVLDRUSAGE)RTMemAlloc(sizeof(*pUsage));
4787	AssertReturn(pUsage, /VERR_NO_MEMORY/ VERR_INTERNAL_ERROR_5);
4788	pUsage->cUsage = 1;
4789	pUsage->pImage = pImage;
4790	pUsage->pNext = pSession->pLdrUsage;
4791	pSession->pLdrUsage = pUsage;
4792	return VINF_SUCCESS;
4793	}
4794
4795
4796	/**
4797	* Frees a load image.
4798	*
4799	* @param pDevExt Pointer to device extension.
4800	* @param pImage Pointer to the image we're gonna free.
4801	* This image must exit!
4802	* @remark The caller MUST own SUPDRVDEVEXT::mtxLdr!
4803	*/
4804	static void supdrvLdrFree(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage)
4805	{
4806	PSUPDRVLDRIMAGE pImagePrev;
4807	LogFlow(("supdrvLdrFree: pImage=%p\n", pImage));
4808
4809	/* find it - arg. should've used doubly linked list. */
4810	Assert(pDevExt->pLdrImages);
4811	pImagePrev = NULL;
4812	if (pDevExt->pLdrImages != pImage)
4813	{
4814	pImagePrev = pDevExt->pLdrImages;
4815	while (pImagePrev->pNext != pImage)
4816	pImagePrev = pImagePrev->pNext;
4817	Assert(pImagePrev->pNext == pImage);
4818	}
4819
4820	/* unlink */
4821	if (pImagePrev)
4822	pImagePrev->pNext = pImage->pNext;
4823	else
4824	pDevExt->pLdrImages = pImage->pNext;
4825
4826	/* check if this is VMMR0.r0 unset its entry point pointers. */
4827	if (pDevExt->pvVMMR0 == pImage->pvImage)
4828	supdrvLdrUnsetVMMR0EPs(pDevExt);
4829
4830	/* check for objects with destructors in this image. (Shouldn't happen.) */
4831	if (pDevExt->pObjs)
4832	{
4833	unsigned cObjs = 0;
4834	PSUPDRVOBJ pObj;
4835	RTSpinlockAcquire(pDevExt->Spinlock);
4836	for (pObj = pDevExt->pObjs; pObj; pObj = pObj->pNext)
4837	if (RT_UNLIKELY((uintptr_t)pObj->pfnDestructor - (uintptr_t)pImage->pvImage < pImage->cbImageBits))
4838	{
4839	pObj->pfnDestructor = NULL;
4840	cObjs++;
4841	}
4842	RTSpinlockRelease(pDevExt->Spinlock);
4843	if (cObjs)
4844	OSDBGPRINT(("supdrvLdrFree: Image '%s' has %d dangling objects!\n", pImage->szName, cObjs));
4845	}
4846
4847	/* call termination function if fully loaded. */
4848	if ( pImage->pfnModuleTerm
4849	&& pImage->uState == SUP_IOCTL_LDR_LOAD)
4850	{
4851	LogFlow(("supdrvIOCtl_LdrLoad: calling pfnModuleTerm=%p\n", pImage->pfnModuleTerm));
4852	pImage->pfnModuleTerm(pImage);
4853	}
4854
4855	/* Inform the tracing component. */
4856	supdrvTracerModuleUnloading(pDevExt, pImage);
4857
4858	/* do native unload if appropriate. */
4859	if (pImage->fNative)
4860	supdrvOSLdrUnload(pDevExt, pImage);
4861
4862	/* free the image */
4863	pImage->cUsage = 0;
4864	pImage->pDevExt = NULL;
4865	pImage->pNext = NULL;
4866	pImage->uState = SUP_IOCTL_LDR_FREE;
4867	RTMemExecFree(pImage->pvImageAlloc, pImage->cbImageBits + 31);
4868	pImage->pvImageAlloc = NULL;
4869	RTMemFree(pImage->pachStrTab);
4870	pImage->pachStrTab = NULL;
4871	RTMemFree(pImage->paSymbols);
4872	pImage->paSymbols = NULL;
4873	RTMemFree(pImage);
4874	}
4875
4876
4877	/**
4878	* Acquires the loader lock.
4879	*
4880	* @returns IPRT status code.
4881	* @param pDevExt The device extension.
4882	*/
4883	DECLINLINE(int) supdrvLdrLock(PSUPDRVDEVEXT pDevExt)
4884	{
4885	#ifdef SUPDRV_USE_MUTEX_FOR_LDR
4886	int rc = RTSemMutexRequest(pDevExt->mtxLdr, RT_INDEFINITE_WAIT);
4887	#else
4888	int rc = RTSemFastMutexRequest(pDevExt->mtxLdr);
4889	#endif
4890	AssertRC(rc);
4891	return rc;
4892	}
4893
4894
4895	/**
4896	* Releases the loader lock.
4897	*
4898	* @returns IPRT status code.
4899	* @param pDevExt The device extension.
4900	*/
4901	DECLINLINE(int) supdrvLdrUnlock(PSUPDRVDEVEXT pDevExt)
4902	{
4903	#ifdef SUPDRV_USE_MUTEX_FOR_LDR
4904	return RTSemMutexRelease(pDevExt->mtxLdr);
4905	#else
4906	return RTSemFastMutexRelease(pDevExt->mtxLdr);
4907	#endif
4908	}
4909
4910
4911	/**
4912	* Implements the service call request.
4913	*
4914	* @returns VBox status code.
4915	* @param pDevExt The device extension.
4916	* @param pSession The calling session.
4917	* @param pReq The request packet, valid.
4918	*/
4919	static int supdrvIOCtl_CallServiceModule(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPCALLSERVICE pReq)
4920	{
4921	#if !defined(RT_OS_WINDOWS) \|\| defined(RT_ARCH_AMD64) \|\| defined(DEBUG)
4922	int rc;
4923
4924	/*
4925	* Find the module first in the module referenced by the calling session.
4926	*/
4927	rc = supdrvLdrLock(pDevExt);
4928	if (RT_SUCCESS(rc))
4929	{
4930	PFNSUPR0SERVICEREQHANDLER pfnServiceReqHandler = NULL;
4931	PSUPDRVLDRUSAGE pUsage;
4932
4933	for (pUsage = pSession->pLdrUsage; pUsage; pUsage = pUsage->pNext)
4934	if ( pUsage->pImage->pfnServiceReqHandler
4935	&& !strcmp(pUsage->pImage->szName, pReq->u.In.szName))
4936	{
4937	pfnServiceReqHandler = pUsage->pImage->pfnServiceReqHandler;
4938	break;
4939	}
4940	supdrvLdrUnlock(pDevExt);
4941
4942	if (pfnServiceReqHandler)
4943	{
4944	/*
4945	* Call it.
4946	*/
4947	if (pReq->Hdr.cbIn == SUP_IOCTL_CALL_SERVICE_SIZE(0))
4948	rc = pfnServiceReqHandler(pSession, pReq->u.In.uOperation, pReq->u.In.u64Arg, NULL);
4949	else
4950	rc = pfnServiceReqHandler(pSession, pReq->u.In.uOperation, pReq->u.In.u64Arg, (PSUPR0SERVICEREQHDR)&pReq->abReqPkt[0]);
4951	}
4952	else
4953	rc = VERR_SUPDRV_SERVICE_NOT_FOUND;
4954	}
4955
4956	/* log it */
4957	if ( RT_FAILURE(rc)
4958	&& rc != VERR_INTERRUPTED
4959	&& rc != VERR_TIMEOUT)
4960	Log(("SUP_IOCTL_CALL_SERVICE: rc=%Rrc op=%u out=%u arg=%RX64 p/t=%RTproc/%RTthrd\n",
4961	rc, pReq->u.In.uOperation, pReq->Hdr.cbOut, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf()));
4962	else
4963	Log4(("SUP_IOCTL_CALL_SERVICE: rc=%Rrc op=%u out=%u arg=%RX64 p/t=%RTproc/%RTthrd\n",
4964	rc, pReq->u.In.uOperation, pReq->Hdr.cbOut, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf()));
4965	return rc;
4966	#else /* RT_OS_WINDOWS && !RT_ARCH_AMD64 && !DEBUG */
4967	return VERR_NOT_IMPLEMENTED;
4968	#endif /* RT_OS_WINDOWS && !RT_ARCH_AMD64 && !DEBUG */
4969	}
4970
4971
4972	/**
4973	* Implements the logger settings request.
4974	*
4975	* @returns VBox status code.
4976	* @param pDevExt The device extension.
4977	* @param pSession The caller's session.
4978	* @param pReq The request.
4979	*/
4980	static int supdrvIOCtl_LoggerSettings(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLOGGERSETTINGS pReq)
4981	{
4982	const char *pszGroup = &pReq->u.In.szStrings[pReq->u.In.offGroups];
4983	const char *pszFlags = &pReq->u.In.szStrings[pReq->u.In.offFlags];
4984	const char *pszDest = &pReq->u.In.szStrings[pReq->u.In.offDestination];
4985	PRTLOGGER pLogger = NULL;
4986	int rc;
4987
4988	/*
4989	* Some further validation.
4990	*/
4991	switch (pReq->u.In.fWhat)
4992	{
4993	case SUPLOGGERSETTINGS_WHAT_SETTINGS:
4994	case SUPLOGGERSETTINGS_WHAT_CREATE:
4995	break;
4996
4997	case SUPLOGGERSETTINGS_WHAT_DESTROY:
4998	if (pszGroup \|\| pszFlags \|\| *pszDest)
4999	return VERR_INVALID_PARAMETER;
5000	if (pReq->u.In.fWhich == SUPLOGGERSETTINGS_WHICH_RELEASE)
5001	return VERR_ACCESS_DENIED;
5002	break;
5003
5004	default:
5005	return VERR_INTERNAL_ERROR;
5006	}
5007
5008	/*
5009	* Get the logger.
5010	*/
5011	switch (pReq->u.In.fWhich)
5012	{
5013	case SUPLOGGERSETTINGS_WHICH_DEBUG:
5014	pLogger = RTLogGetDefaultInstance();
5015	break;
5016
5017	case SUPLOGGERSETTINGS_WHICH_RELEASE:
5018	pLogger = RTLogRelDefaultInstance();
5019	break;
5020
5021	default:
5022	return VERR_INTERNAL_ERROR;
5023	}
5024
5025	/*
5026	* Do the job.
5027	*/
5028	switch (pReq->u.In.fWhat)
5029	{
5030	case SUPLOGGERSETTINGS_WHAT_SETTINGS:
5031	if (pLogger)
5032	{
5033	rc = RTLogFlags(pLogger, pszFlags);
5034	if (RT_SUCCESS(rc))
5035	rc = RTLogGroupSettings(pLogger, pszGroup);
5036	NOREF(pszDest);
5037	}
5038	else
5039	rc = VERR_NOT_FOUND;
5040	break;
5041
5042	case SUPLOGGERSETTINGS_WHAT_CREATE:
5043	{
5044	if (pLogger)
5045	rc = VERR_ALREADY_EXISTS;
5046	else
5047	{
5048	static const char * const s_apszGroups[] = VBOX_LOGGROUP_NAMES;
5049
5050	rc = RTLogCreate(&pLogger,
5051	0 /* fFlags */,
5052	pszGroup,
5053	pReq->u.In.fWhich == SUPLOGGERSETTINGS_WHICH_DEBUG
5054	? "VBOX_LOG"
5055	: "VBOX_RELEASE_LOG",
5056	RT_ELEMENTS(s_apszGroups),
5057	s_apszGroups,
5058	RTLOGDEST_STDOUT \| RTLOGDEST_DEBUGGER,
5059	NULL);
5060	if (RT_SUCCESS(rc))
5061	{
5062	rc = RTLogFlags(pLogger, pszFlags);
5063	NOREF(pszDest);
5064	if (RT_SUCCESS(rc))
5065	{
5066	switch (pReq->u.In.fWhich)
5067	{
5068	case SUPLOGGERSETTINGS_WHICH_DEBUG:
5069	pLogger = RTLogSetDefaultInstance(pLogger);
5070	break;
5071	case SUPLOGGERSETTINGS_WHICH_RELEASE:
5072	pLogger = RTLogRelSetDefaultInstance(pLogger);
5073	break;
5074	}
5075	}
5076	RTLogDestroy(pLogger);
5077	}
5078	}
5079	break;
5080	}
5081
5082	case SUPLOGGERSETTINGS_WHAT_DESTROY:
5083	switch (pReq->u.In.fWhich)
5084	{
5085	case SUPLOGGERSETTINGS_WHICH_DEBUG:
5086	pLogger = RTLogSetDefaultInstance(NULL);
5087	break;
5088	case SUPLOGGERSETTINGS_WHICH_RELEASE:
5089	pLogger = RTLogRelSetDefaultInstance(NULL);
5090	break;
5091	}
5092	rc = RTLogDestroy(pLogger);
5093	break;
5094
5095	default:
5096	{
5097	rc = VERR_INTERNAL_ERROR;
5098	break;
5099	}
5100	}
5101
5102	return rc;
5103	}
5104
5105
5106	/**
5107	* Creates the GIP.
5108	*
5109	* @returns VBox status code.
5110	* @param pDevExt Instance data. GIP stuff may be updated.
5111	*/
5112	static int supdrvGipCreate(PSUPDRVDEVEXT pDevExt)
5113	{
5114	PSUPGLOBALINFOPAGE pGip;
5115	RTHCPHYS HCPhysGip;
5116	uint32_t u32SystemResolution;
5117	uint32_t u32Interval;
5118	unsigned cCpus;
5119	int rc;
5120
5121
5122	LogFlow(("supdrvGipCreate:\n"));
5123
5124	/* assert order */
5125	Assert(pDevExt->u32SystemTimerGranularityGrant == 0);
5126	Assert(pDevExt->GipMemObj == NIL_RTR0MEMOBJ);
5127	Assert(!pDevExt->pGipTimer);
5128
5129	/*
5130	* Check the CPU count.
5131	*/
5132	cCpus = RTMpGetArraySize();
5133	if ( cCpus > RTCPUSET_MAX_CPUS
5134	\|\| cCpus > 256 /ApicId is used for the mappings/)
5135	{
5136	SUPR0Printf("VBoxDrv: Too many CPUs (%u) for the GIP (max %u)\n", cCpus, RT_MIN(RTCPUSET_MAX_CPUS, 256));
5137	return VERR_TOO_MANY_CPUS;
5138	}
5139
5140	/*
5141	* Allocate a contiguous set of pages with a default kernel mapping.
5142	*/
5143	rc = RTR0MemObjAllocCont(&pDevExt->GipMemObj, RT_UOFFSETOF(SUPGLOBALINFOPAGE, aCPUs[cCpus]), false /fExecutable/);
5144	if (RT_FAILURE(rc))
5145	{
5146	OSDBGPRINT(("supdrvGipCreate: failed to allocate the GIP page. rc=%d\n", rc));
5147	return rc;
5148	}
5149	pGip = (PSUPGLOBALINFOPAGE)RTR0MemObjAddress(pDevExt->GipMemObj); AssertPtr(pGip);
5150	HCPhysGip = RTR0MemObjGetPagePhysAddr(pDevExt->GipMemObj, 0); Assert(HCPhysGip != NIL_RTHCPHYS);
5151
5152	/*
5153	* Find a reasonable update interval and initialize the structure.
5154	*/
5155	u32Interval = u32SystemResolution = RTTimerGetSystemGranularity();
5156	while (u32Interval < 10000000 /* 10 ms */)
5157	u32Interval += u32SystemResolution;
5158
5159	supdrvGipInit(pDevExt, pGip, HCPhysGip, RTTimeSystemNanoTS(), 1000000000 / u32Interval /=Hz/, cCpus);
5160
5161	/*
5162	* Create the timer.
5163	* If CPU_ALL isn't supported we'll have to fall back to synchronous mode.
5164	*/
5165	if (pGip->u32Mode == SUPGIPMODE_ASYNC_TSC)
5166	{
5167	rc = RTTimerCreateEx(&pDevExt->pGipTimer, u32Interval, RTTIMER_FLAGS_CPU_ALL, supdrvGipAsyncTimer, pDevExt);
5168	if (rc == VERR_NOT_SUPPORTED)
5169	{
5170	OSDBGPRINT(("supdrvGipCreate: omni timer not supported, falling back to synchronous mode\n"));
5171	pGip->u32Mode = SUPGIPMODE_SYNC_TSC;
5172	}
5173	}
5174	if (pGip->u32Mode != SUPGIPMODE_ASYNC_TSC)
5175	rc = RTTimerCreateEx(&pDevExt->pGipTimer, u32Interval, 0 /* fFlags */, supdrvGipSyncTimer, pDevExt);
5176	if (RT_SUCCESS(rc))
5177	{
5178	rc = RTMpNotificationRegister(supdrvGipMpEvent, pDevExt);
5179	if (RT_SUCCESS(rc))
5180	{
5181	rc = RTMpOnAll(supdrvGipInitOnCpu, pDevExt, pGip);
5182	if (RT_SUCCESS(rc))
5183	{
5184	/*
5185	* We're good.
5186	*/
5187	Log(("supdrvGipCreate: %u ns interval.\n", u32Interval));
5188	g_pSUPGlobalInfoPage = pGip;
5189	return VINF_SUCCESS;
5190	}
5191
5192	OSDBGPRINT(("supdrvGipCreate: RTMpOnAll failed with rc=%Rrc\n", rc));
5193	RTMpNotificationDeregister(supdrvGipMpEvent, pDevExt);
5194
5195	}
5196	else
5197	OSDBGPRINT(("supdrvGipCreate: failed to register MP event notfication. rc=%Rrc\n", rc));
5198	}
5199	else
5200	{
5201	OSDBGPRINT(("supdrvGipCreate: failed create GIP timer at %u ns interval. rc=%Rrc\n", u32Interval, rc));
5202	Assert(!pDevExt->pGipTimer);
5203	}
5204	supdrvGipDestroy(pDevExt);
5205	return rc;
5206	}
5207
5208
5209	/**
5210	* Terminates the GIP.
5211	*
5212	* @param pDevExt Instance data. GIP stuff may be updated.
5213	*/
5214	static void supdrvGipDestroy(PSUPDRVDEVEXT pDevExt)
5215	{
5216	int rc;
5217	#ifdef DEBUG_DARWIN_GIP
5218	OSDBGPRINT(("supdrvGipDestroy: pDevExt=%p pGip=%p pGipTimer=%p GipMemObj=%p\n", pDevExt,
5219	pDevExt->GipMemObj != NIL_RTR0MEMOBJ ? RTR0MemObjAddress(pDevExt->GipMemObj) : NULL,
5220	pDevExt->pGipTimer, pDevExt->GipMemObj));
5221	#endif
5222
5223	/*
5224	* Invalid the GIP data.
5225	*/
5226	if (pDevExt->pGip)
5227	{
5228	supdrvGipTerm(pDevExt->pGip);
5229	pDevExt->pGip = NULL;
5230	}
5231	g_pSUPGlobalInfoPage = NULL;
5232
5233	/*
5234	* Destroy the timer and free the GIP memory object.
5235	*/
5236	if (pDevExt->pGipTimer)
5237	{
5238	rc = RTTimerDestroy(pDevExt->pGipTimer); AssertRC(rc);
5239	pDevExt->pGipTimer = NULL;
5240	}
5241
5242	if (pDevExt->GipMemObj != NIL_RTR0MEMOBJ)
5243	{
5244	rc = RTR0MemObjFree(pDevExt->GipMemObj, true /* free mappings */); AssertRC(rc);
5245	pDevExt->GipMemObj = NIL_RTR0MEMOBJ;
5246	}
5247
5248	/*
5249	* Finally, make sure we've release the system timer resolution request
5250	* if one actually succeeded and is still pending.
5251	*/
5252	if (pDevExt->u32SystemTimerGranularityGrant)
5253	{
5254	rc = RTTimerReleaseSystemGranularity(pDevExt->u32SystemTimerGranularityGrant); AssertRC(rc);
5255	pDevExt->u32SystemTimerGranularityGrant = 0;
5256	}
5257	}
5258
5259
5260	/**
5261	* Timer callback function sync GIP mode.
5262	* @param pTimer The timer.
5263	* @param pvUser The device extension.
5264	*/
5265	static DECLCALLBACK(void) supdrvGipSyncTimer(PRTTIMER pTimer, void *pvUser, uint64_t iTick)
5266	{
5267	RTCCUINTREG fOldFlags = ASMIntDisableFlags(); /* No interruptions please (real problem on S10). */
5268	PSUPDRVDEVEXT pDevExt = (PSUPDRVDEVEXT)pvUser;
5269	uint64_t u64TSC = ASMReadTSC();
5270	uint64_t NanoTS = RTTimeSystemNanoTS();
5271
5272	supdrvGipUpdate(pDevExt, NanoTS, u64TSC, NIL_RTCPUID, iTick);
5273
5274	ASMSetFlags(fOldFlags);
5275	}
5276
5277
5278	/**
5279	* Timer callback function for async GIP mode.
5280	* @param pTimer The timer.
5281	* @param pvUser The device extension.
5282	*/
5283	static DECLCALLBACK(void) supdrvGipAsyncTimer(PRTTIMER pTimer, void *pvUser, uint64_t iTick)
5284	{
5285	RTCCUINTREG fOldFlags = ASMIntDisableFlags(); /* No interruptions please (real problem on S10). */
5286	PSUPDRVDEVEXT pDevExt = (PSUPDRVDEVEXT)pvUser;
5287	RTCPUID idCpu = RTMpCpuId();
5288	uint64_t u64TSC = ASMReadTSC();
5289	uint64_t NanoTS = RTTimeSystemNanoTS();
5290
5291	/** @todo reset the transaction number and whatnot when iTick == 1. */
5292	if (pDevExt->idGipMaster == idCpu)
5293	supdrvGipUpdate(pDevExt, NanoTS, u64TSC, idCpu, iTick);
5294	else
5295	supdrvGipUpdatePerCpu(pDevExt, NanoTS, u64TSC, idCpu, ASMGetApicId(), iTick);
5296
5297	ASMSetFlags(fOldFlags);
5298	}
5299
5300
5301	/**
5302	* Finds our (@a idCpu) entry, or allocates a new one if not found.
5303	*
5304	* @returns Index of the CPU in the cache set.
5305	* @param pGip The GIP.
5306	* @param idCpu The CPU ID.
5307	*/
5308	static uint32_t supdrvGipCpuIndexFromCpuId(PSUPGLOBALINFOPAGE pGip, RTCPUID idCpu)
5309	{
5310	uint32_t i, cTries;
5311
5312	/*
5313	* ASSUMES that CPU IDs are constant.
5314	*/
5315	for (i = 0; i < pGip->cCpus; i++)
5316	if (pGip->aCPUs[i].idCpu == idCpu)
5317	return i;
5318
5319	cTries = 0;
5320	do
5321	{
5322	for (i = 0; i < pGip->cCpus; i++)
5323	{
5324	bool fRc;
5325	ASMAtomicCmpXchgSize(&pGip->aCPUs[i].idCpu, idCpu, NIL_RTCPUID, fRc);
5326	if (fRc)
5327	return i;
5328	}
5329	} while (cTries++ < 32);
5330	AssertReleaseFailed();
5331	return i - 1;
5332	}
5333
5334
5335	/**
5336	* The calling CPU should be accounted as online, update GIP accordingly.
5337	*
5338	* This is used by supdrvGipMpEvent as well as the supdrvGipCreate.
5339	*
5340	* @param pDevExt The device extension.
5341	* @param idCpu The CPU ID.
5342	*/
5343	static void supdrvGipMpEventOnline(PSUPDRVDEVEXT pDevExt, RTCPUID idCpu)
5344	{
5345	int iCpuSet = 0;
5346	uint16_t idApic = UINT16_MAX;
5347	uint32_t i = 0;
5348	uint64_t u64NanoTS = 0;
5349	PSUPGLOBALINFOPAGE pGip = pDevExt->pGip;
5350
5351	AssertPtrReturnVoid(pGip);
5352	AssertRelease(idCpu == RTMpCpuId());
5353	Assert(pGip->cPossibleCpus == RTMpGetCount());
5354
5355	/*
5356	* Do this behind a spinlock with interrupts disabled as this can fire
5357	* on all CPUs simultaneously, see @bugref{6110}.
5358	*/
5359	RTSpinlockAcquire(pDevExt->hGipSpinlock);
5360
5361	/*
5362	* Update the globals.
5363	*/
5364	ASMAtomicWriteU16(&pGip->cPresentCpus, RTMpGetPresentCount());
5365	ASMAtomicWriteU16(&pGip->cOnlineCpus, RTMpGetOnlineCount());
5366	iCpuSet = RTMpCpuIdToSetIndex(idCpu);
5367	if (iCpuSet >= 0)
5368	{
5369	Assert(RTCpuSetIsMemberByIndex(&pGip->PossibleCpuSet, iCpuSet));
5370	RTCpuSetAddByIndex(&pGip->OnlineCpuSet, iCpuSet);
5371	RTCpuSetAddByIndex(&pGip->PresentCpuSet, iCpuSet);
5372	}
5373
5374	/*
5375	* Update the entry.
5376	*/
5377	u64NanoTS = RTTimeSystemNanoTS() - pGip->u32UpdateIntervalNS;
5378	i = supdrvGipCpuIndexFromCpuId(pGip, idCpu);
5379	supdrvGipInitCpu(pGip, &pGip->aCPUs[i], u64NanoTS);
5380	idApic = ASMGetApicId();
5381	ASMAtomicWriteU16(&pGip->aCPUs[i].idApic, idApic);
5382	ASMAtomicWriteS16(&pGip->aCPUs[i].iCpuSet, (int16_t)iCpuSet);
5383	ASMAtomicWriteSize(&pGip->aCPUs[i].idCpu, idCpu);
5384
5385	/*
5386	* Update the APIC ID and CPU set index mappings.
5387	*/
5388	ASMAtomicWriteU16(&pGip->aiCpuFromApicId[idApic], i);
5389	ASMAtomicWriteU16(&pGip->aiCpuFromCpuSetIdx[iCpuSet], i);
5390
5391	/* commit it */
5392	ASMAtomicWriteSize(&pGip->aCPUs[i].enmState, SUPGIPCPUSTATE_ONLINE);
5393
5394	RTSpinlockReleaseNoInts(pDevExt->hGipSpinlock);
5395	}
5396
5397
5398	/**
5399	* The CPU should be accounted as offline, update the GIP accordingly.
5400	*
5401	* This is used by supdrvGipMpEvent.
5402	*
5403	* @param pDevExt The device extension.
5404	* @param idCpu The CPU ID.
5405	*/
5406	static void supdrvGipMpEventOffline(PSUPDRVDEVEXT pDevExt, RTCPUID idCpu)
5407	{
5408	int iCpuSet;
5409	unsigned i;
5410
5411	PSUPGLOBALINFOPAGE pGip = pDevExt->pGip;
5412
5413	AssertPtrReturnVoid(pGip);
5414	RTSpinlockAcquire(pDevExt->hGipSpinlock);
5415
5416	iCpuSet = RTMpCpuIdToSetIndex(idCpu);
5417	AssertReturnVoid(iCpuSet >= 0);
5418
5419	i = pGip->aiCpuFromCpuSetIdx[iCpuSet];
5420	AssertReturnVoid(i < pGip->cCpus);
5421	AssertReturnVoid(pGip->aCPUs[i].idCpu == idCpu);
5422
5423	Assert(RTCpuSetIsMemberByIndex(&pGip->PossibleCpuSet, iCpuSet));
5424	RTCpuSetDelByIndex(&pGip->OnlineCpuSet, iCpuSet);
5425
5426	/* commit it */
5427	ASMAtomicWriteSize(&pGip->aCPUs[i].enmState, SUPGIPCPUSTATE_OFFLINE);
5428
5429	RTSpinlockReleaseNoInts(pDevExt->hGipSpinlock);
5430	}
5431
5432
5433	/**
5434	* Multiprocessor event notification callback.
5435	*
5436	* This is used to make sure that the GIP master gets passed on to
5437	* another CPU. It also updates the associated CPU data.
5438	*
5439	* @param enmEvent The event.
5440	* @param idCpu The cpu it applies to.
5441	* @param pvUser Pointer to the device extension.
5442	*
5443	* @remarks This function -must- fire on the newly online'd CPU for the
5444	* RTMPEVENT_ONLINE case and can fire on any CPU for the
5445	* RTMPEVENT_OFFLINE case.
5446	*/
5447	static DECLCALLBACK(void) supdrvGipMpEvent(RTMPEVENT enmEvent, RTCPUID idCpu, void *pvUser)
5448	{
5449	PSUPDRVDEVEXT pDevExt = (PSUPDRVDEVEXT)pvUser;
5450	PSUPGLOBALINFOPAGE pGip = pDevExt->pGip;
5451
5452	AssertRelease(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
5453
5454	/*
5455	* Update the GIP CPU data.
5456	*/
5457	if (pGip)
5458	{
5459	switch (enmEvent)
5460	{
5461	case RTMPEVENT_ONLINE:
5462	AssertRelease(idCpu == RTMpCpuId());
5463	supdrvGipMpEventOnline(pDevExt, idCpu);
5464	break;
5465	case RTMPEVENT_OFFLINE:
5466	supdrvGipMpEventOffline(pDevExt, idCpu);
5467	break;
5468
5469	}
5470	}
5471
5472	/*
5473	* Make sure there is a master GIP.
5474	*/
5475	if (enmEvent == RTMPEVENT_OFFLINE)
5476	{
5477	RTCPUID idGipMaster = ASMAtomicReadU32(&pDevExt->idGipMaster);
5478	if (idGipMaster == idCpu)
5479	{
5480	/*
5481	* Find a new GIP master.
5482	*/
5483	bool fIgnored;
5484	unsigned i;
5485	RTCPUID idNewGipMaster = NIL_RTCPUID;
5486	RTCPUSET OnlineCpus;
5487	RTMpGetOnlineSet(&OnlineCpus);
5488
5489	for (i = 0; i < RTCPUSET_MAX_CPUS; i++)
5490	{
5491	RTCPUID idCurCpu = RTMpCpuIdFromSetIndex(i);
5492	if ( RTCpuSetIsMember(&OnlineCpus, idCurCpu)
5493	&& idCurCpu != idGipMaster)
5494	{
5495	idNewGipMaster = idCurCpu;
5496	break;
5497	}
5498	}
5499
5500	Log(("supdrvGipMpEvent: Gip master %#lx -> %#lx\n", (long)idGipMaster, (long)idNewGipMaster));
5501	ASMAtomicCmpXchgSize(&pDevExt->idGipMaster, idNewGipMaster, idGipMaster, fIgnored);
5502	NOREF(fIgnored);
5503	}
5504	}
5505	}
5506
5507
5508	/**
5509	* Callback used by supdrvDetermineAsyncTSC to read the TSC on a CPU.
5510	*
5511	* @param idCpu Ignored.
5512	* @param pvUser1 Where to put the TSC.
5513	* @param pvUser2 Ignored.
5514	*/
5515	static DECLCALLBACK(void) supdrvDetermineAsyncTscWorker(RTCPUID idCpu, void pvUser1, void pvUser2)
5516	{
5517	#if 1
5518	ASMAtomicWriteU64((uint64_t volatile *)pvUser1, ASMReadTSC());
5519	#else
5520	(uint64_t )pvUser1 = ASMReadTSC();
5521	#endif
5522	}
5523
5524
5525	/**
5526	* Determine if Async GIP mode is required because of TSC drift.
5527	*
5528	* When using the default/normal timer code it is essential that the time stamp counter
5529	* (TSC) runs never backwards, that is, a read operation to the counter should return
5530	* a bigger value than any previous read operation. This is guaranteed by the latest
5531	* AMD CPUs and by newer Intel CPUs which never enter the C2 state (P4). In any other
5532	* case we have to choose the asynchronous timer mode.
5533	*
5534	* @param poffMin Pointer to the determined difference between different cores.
5535	* @return false if the time stamp counters appear to be synchronized, true otherwise.
5536	*/
5537	static bool supdrvDetermineAsyncTsc(uint64_t *poffMin)
5538	{
5539	/*
5540	* Just iterate all the cpus 8 times and make sure that the TSC is
5541	* ever increasing. We don't bother taking TSC rollover into account.
5542	*/
5543	int iEndCpu = RTMpGetArraySize();
5544	int iCpu;
5545	int cLoops = 8;
5546	bool fAsync = false;
5547	int rc = VINF_SUCCESS;
5548	uint64_t offMax = 0;
5549	uint64_t offMin = ~(uint64_t)0;
5550	uint64_t PrevTsc = ASMReadTSC();
5551
5552	while (cLoops-- > 0)
5553	{
5554	for (iCpu = 0; iCpu < iEndCpu; iCpu++)
5555	{
5556	uint64_t CurTsc;
5557	rc = RTMpOnSpecific(RTMpCpuIdFromSetIndex(iCpu), supdrvDetermineAsyncTscWorker, &CurTsc, NULL);
5558	if (RT_SUCCESS(rc))
5559	{
5560	if (CurTsc <= PrevTsc)
5561	{
5562	fAsync = true;
5563	offMin = offMax = PrevTsc - CurTsc;
5564	Log(("supdrvDetermineAsyncTsc: iCpu=%d cLoops=%d CurTsc=%llx PrevTsc=%llx\n",
5565	iCpu, cLoops, CurTsc, PrevTsc));
5566	break;
5567	}
5568
5569	/* Gather statistics (except the first time). */
5570	if (iCpu != 0 \|\| cLoops != 7)
5571	{
5572	uint64_t off = CurTsc - PrevTsc;
5573	if (off < offMin)
5574	offMin = off;
5575	if (off > offMax)
5576	offMax = off;
5577	Log2(("%d/%d: off=%llx\n", cLoops, iCpu, off));
5578	}
5579
5580	/* Next */
5581	PrevTsc = CurTsc;
5582	}
5583	else if (rc == VERR_NOT_SUPPORTED)
5584	break;
5585	else
5586	AssertMsg(rc == VERR_CPU_NOT_FOUND \|\| rc == VERR_CPU_OFFLINE, ("%d\n", rc));
5587	}
5588
5589	/* broke out of the loop. */
5590	if (iCpu < iEndCpu)
5591	break;
5592	}
5593
5594	poffMin = offMin; / Almost RTMpOnSpecific profiling. */
5595	Log(("supdrvDetermineAsyncTsc: returns %d; iEndCpu=%d rc=%d offMin=%llx offMax=%llx\n",
5596	fAsync, iEndCpu, rc, offMin, offMax));
5597	#if !defined(RT_OS_SOLARIS) && !defined(RT_OS_OS2) && !defined(RT_OS_WINDOWS)
5598	OSDBGPRINT(("vboxdrv: fAsync=%d offMin=%#lx offMax=%#lx\n", fAsync, (long)offMin, (long)offMax));
5599	#endif
5600	return fAsync;
5601	}
5602
5603
5604	/**
5605	* Determine the GIP TSC mode.
5606	*
5607	* @returns The most suitable TSC mode.
5608	* @param pDevExt Pointer to the device instance data.
5609	*/
5610	static SUPGIPMODE supdrvGipDeterminTscMode(PSUPDRVDEVEXT pDevExt)
5611	{
5612	/*
5613	* On SMP we're faced with two problems:
5614	* (1) There might be a skew between the CPU, so that cpu0
5615	* returns a TSC that is slightly different from cpu1.
5616	* (2) Power management (and other things) may cause the TSC
5617	* to run at a non-constant speed, and cause the speed
5618	* to be different on the cpus. This will result in (1).
5619	*
5620	* So, on SMP systems we'll have to select the ASYNC update method
5621	* if there are symptoms of these problems.
5622	*/
5623	if (RTMpGetCount() > 1)
5624	{
5625	uint32_t uEAX, uEBX, uECX, uEDX;
5626	uint64_t u64DiffCoresIgnored;
5627
5628	/* Permit the user and/or the OS specific bits to force async mode. */
5629	if (supdrvOSGetForcedAsyncTscMode(pDevExt))
5630	return SUPGIPMODE_ASYNC_TSC;
5631
5632	/* Try check for current differences between the cpus. */
5633	if (supdrvDetermineAsyncTsc(&u64DiffCoresIgnored))
5634	return SUPGIPMODE_ASYNC_TSC;
5635
5636	/*
5637	* If the CPU supports power management and is an AMD one we
5638	* won't trust it unless it has the TscInvariant bit is set.
5639	*/
5640	/* Check for "AuthenticAMD" */
5641	ASMCpuId(0, &uEAX, &uEBX, &uECX, &uEDX);
5642	if ( uEAX >= 1
5643	&& ASMIsAmdCpuEx(uEBX, uECX, uEDX))
5644	{
5645	/* Check for APM support and that TscInvariant is cleared. */
5646	ASMCpuId(0x80000000, &uEAX, &uEBX, &uECX, &uEDX);
5647	if (uEAX >= 0x80000007)
5648	{
5649	ASMCpuId(0x80000007, &uEAX, &uEBX, &uECX, &uEDX);
5650	if ( !(uEDX & RT_BIT(8))/* TscInvariant */
5651	&& (uEDX & 0x3e)) /* STC\|TM\|THERMTRIP\|VID\|FID. Ignore TS. */
5652	return SUPGIPMODE_ASYNC_TSC;
5653	}
5654	}
5655	}
5656	return SUPGIPMODE_SYNC_TSC;
5657	}
5658
5659
5660	/**
5661	* Initializes per-CPU GIP information.
5662	*
5663	* @param pGip Pointer to the read-write kernel mapping of the GIP.
5664	* @param pCpu Pointer to which GIP CPU to initalize.
5665	* @param u64NanoTS The current nanosecond timestamp.
5666	*/
5667	static void supdrvGipInitCpu(PSUPGLOBALINFOPAGE pGip, PSUPGIPCPU pCpu, uint64_t u64NanoTS)
5668	{
5669	pCpu->u32TransactionId = 2;
5670	pCpu->u64NanoTS = u64NanoTS;
5671	pCpu->u64TSC = ASMReadTSC();
5672
5673	ASMAtomicWriteSize(&pCpu->enmState, SUPGIPCPUSTATE_INVALID);
5674	ASMAtomicWriteSize(&pCpu->idCpu, NIL_RTCPUID);
5675	ASMAtomicWriteS16(&pCpu->iCpuSet, -1);
5676	ASMAtomicWriteU16(&pCpu->idApic, UINT16_MAX);
5677
5678	/*
5679	* We don't know the following values until we've executed updates.
5680	* So, we'll just pretend it's a 4 GHz CPU and adjust the history it on
5681	* the 2nd timer callout.
5682	*/
5683	pCpu->u64CpuHz = _4G + 1; /* tstGIP-2 depends on this. */
5684	pCpu->u32UpdateIntervalTSC
5685	= pCpu->au32TSCHistory[0]
5686	= pCpu->au32TSCHistory[1]
5687	= pCpu->au32TSCHistory[2]
5688	= pCpu->au32TSCHistory[3]
5689	= pCpu->au32TSCHistory[4]
5690	= pCpu->au32TSCHistory[5]
5691	= pCpu->au32TSCHistory[6]
5692	= pCpu->au32TSCHistory[7]
5693	= (uint32_t)(_4G / pGip->u32UpdateHz);
5694	}
5695
5696
5697	/**
5698	* Initializes the GIP data.
5699	*
5700	* @param pDevExt Pointer to the device instance data.
5701	* @param pGip Pointer to the read-write kernel mapping of the GIP.
5702	* @param HCPhys The physical address of the GIP.
5703	* @param u64NanoTS The current nanosecond timestamp.
5704	* @param uUpdateHz The update frequency.
5705	* @param cCpus The CPU count.
5706	*/
5707	static void supdrvGipInit(PSUPDRVDEVEXT pDevExt, PSUPGLOBALINFOPAGE pGip, RTHCPHYS HCPhys,
5708	uint64_t u64NanoTS, unsigned uUpdateHz, unsigned cCpus)
5709	{
5710	size_t const cbGip = RT_ALIGN_Z(RT_OFFSETOF(SUPGLOBALINFOPAGE, aCPUs[cCpus]), PAGE_SIZE);
5711	unsigned i;
5712	#ifdef DEBUG_DARWIN_GIP
5713	OSDBGPRINT(("supdrvGipInit: pGip=%p HCPhys=%lx u64NanoTS=%llu uUpdateHz=%d cCpus=%u\n", pGip, (long)HCPhys, u64NanoTS, uUpdateHz, cCpus));
5714	#else
5715	LogFlow(("supdrvGipInit: pGip=%p HCPhys=%lx u64NanoTS=%llu uUpdateHz=%d cCpus=%u\n", pGip, (long)HCPhys, u64NanoTS, uUpdateHz, cCpus));
5716	#endif
5717
5718	/*
5719	* Initialize the structure.
5720	*/
5721	memset(pGip, 0, cbGip);
5722	pGip->u32Magic = SUPGLOBALINFOPAGE_MAGIC;
5723	pGip->u32Version = SUPGLOBALINFOPAGE_VERSION;
5724	pGip->u32Mode = supdrvGipDeterminTscMode(pDevExt);
5725	pGip->cCpus = (uint16_t)cCpus;
5726	pGip->cPages = (uint16_t)(cbGip / PAGE_SIZE);
5727	pGip->u32UpdateHz = uUpdateHz;
5728	pGip->u32UpdateIntervalNS = 1000000000 / uUpdateHz;
5729	pGip->u64NanoTSLastUpdateHz = u64NanoTS;
5730	RTCpuSetEmpty(&pGip->OnlineCpuSet);
5731	RTCpuSetEmpty(&pGip->PresentCpuSet);
5732	RTMpGetSet(&pGip->PossibleCpuSet);
5733	pGip->cOnlineCpus = RTMpGetOnlineCount();
5734	pGip->cPresentCpus = RTMpGetPresentCount();
5735	pGip->cPossibleCpus = RTMpGetCount();
5736	pGip->idCpuMax = RTMpGetMaxCpuId();
5737	for (i = 0; i < RT_ELEMENTS(pGip->aiCpuFromApicId); i++)
5738	pGip->aiCpuFromApicId[i] = 0;
5739	for (i = 0; i < RT_ELEMENTS(pGip->aiCpuFromCpuSetIdx); i++)
5740	pGip->aiCpuFromCpuSetIdx[i] = UINT16_MAX;
5741
5742	for (i = 0; i < cCpus; i++)
5743	supdrvGipInitCpu(pGip, &pGip->aCPUs[i], u64NanoTS);
5744
5745	/*
5746	* Link it to the device extension.
5747	*/
5748	pDevExt->pGip = pGip;
5749	pDevExt->HCPhysGip = HCPhys;
5750	pDevExt->cGipUsers = 0;
5751	}
5752
5753
5754	/**
5755	* On CPU initialization callback for RTMpOnAll.
5756	*
5757	* @param idCpu The CPU ID.
5758	* @param pvUser1 The device extension.
5759	* @param pvUser2 The GIP.
5760	*/
5761	static DECLCALLBACK(void) supdrvGipInitOnCpu(RTCPUID idCpu, void pvUser1, void pvUser2)
5762	{
5763	/* This is good enough, even though it will update some of the globals a
5764	bit to much. */
5765	supdrvGipMpEventOnline((PSUPDRVDEVEXT)pvUser1, idCpu);
5766	}
5767
5768
5769	/**
5770	* Invalidates the GIP data upon termination.
5771	*
5772	* @param pGip Pointer to the read-write kernel mapping of the GIP.
5773	*/
5774	static void supdrvGipTerm(PSUPGLOBALINFOPAGE pGip)
5775	{
5776	unsigned i;
5777	pGip->u32Magic = 0;
5778	for (i = 0; i < RT_ELEMENTS(pGip->aCPUs); i++)
5779	{
5780	pGip->aCPUs[i].u64NanoTS = 0;
5781	pGip->aCPUs[i].u64TSC = 0;
5782	pGip->aCPUs[i].iTSCHistoryHead = 0;
5783	}
5784	}
5785
5786
5787	/**
5788	* Worker routine for supdrvGipUpdate and supdrvGipUpdatePerCpu that
5789	* updates all the per cpu data except the transaction id.
5790	*
5791	* @param pDevExt The device extension.
5792	* @param pGipCpu Pointer to the per cpu data.
5793	* @param u64NanoTS The current time stamp.
5794	* @param u64TSC The current TSC.
5795	* @param iTick The current timer tick.
5796	*/
5797	static void supdrvGipDoUpdateCpu(PSUPDRVDEVEXT pDevExt, PSUPGIPCPU pGipCpu, uint64_t u64NanoTS, uint64_t u64TSC, uint64_t iTick)
5798	{
5799	uint64_t u64TSCDelta;
5800	uint32_t u32UpdateIntervalTSC;
5801	uint32_t u32UpdateIntervalTSCSlack;
5802	unsigned iTSCHistoryHead;
5803	uint64_t u64CpuHz;
5804	uint32_t u32TransactionId;
5805
5806	PSUPGLOBALINFOPAGE pGip = pDevExt->pGip;
5807	AssertPtrReturnVoid(pGip);
5808
5809	/* Delta between this and the previous update. */
5810	ASMAtomicUoWriteU32(&pGipCpu->u32PrevUpdateIntervalNS, (uint32_t)(u64NanoTS - pGipCpu->u64NanoTS));
5811
5812	/*
5813	* Update the NanoTS.
5814	*/
5815	ASMAtomicWriteU64(&pGipCpu->u64NanoTS, u64NanoTS);
5816
5817	/*
5818	* Calc TSC delta.
5819	*/
5820	/** @todo validate the NanoTS delta, don't trust the OS to call us when it should... */
5821	u64TSCDelta = u64TSC - pGipCpu->u64TSC;
5822	ASMAtomicWriteU64(&pGipCpu->u64TSC, u64TSC);
5823
5824	if (u64TSCDelta >> 32)
5825	{
5826	u64TSCDelta = pGipCpu->u32UpdateIntervalTSC;
5827	pGipCpu->cErrors++;
5828	}
5829
5830	/*
5831	* On the 2nd and 3rd callout, reset the history with the current TSC
5832	* interval since the values entered by supdrvGipInit are totally off.
5833	* The interval on the 1st callout completely unreliable, the 2nd is a bit
5834	* better, while the 3rd should be most reliable.
5835	*/
5836	u32TransactionId = pGipCpu->u32TransactionId;
5837	if (RT_UNLIKELY( ( u32TransactionId == 5
5838	\|\| u32TransactionId == 7)
5839	&& ( iTick == 2
5840	\|\| iTick == 3) ))
5841	{
5842	unsigned i;
5843	for (i = 0; i < RT_ELEMENTS(pGipCpu->au32TSCHistory); i++)
5844	ASMAtomicUoWriteU32(&pGipCpu->au32TSCHistory[i], (uint32_t)u64TSCDelta);
5845	}
5846
5847	/*
5848	* TSC History.
5849	*/
5850	Assert(RT_ELEMENTS(pGipCpu->au32TSCHistory) == 8);
5851	iTSCHistoryHead = (pGipCpu->iTSCHistoryHead + 1) & 7;
5852	ASMAtomicWriteU32(&pGipCpu->iTSCHistoryHead, iTSCHistoryHead);
5853	ASMAtomicWriteU32(&pGipCpu->au32TSCHistory[iTSCHistoryHead], (uint32_t)u64TSCDelta);
5854
5855	/*
5856	* UpdateIntervalTSC = average of last 8,2,1 intervals depending on update HZ.
5857	*/
5858	if (pGip->u32UpdateHz >= 1000)
5859	{
5860	uint32_t u32;
5861	u32 = pGipCpu->au32TSCHistory[0];
5862	u32 += pGipCpu->au32TSCHistory[1];
5863	u32 += pGipCpu->au32TSCHistory[2];
5864	u32 += pGipCpu->au32TSCHistory[3];
5865	u32 >>= 2;
5866	u32UpdateIntervalTSC = pGipCpu->au32TSCHistory[4];
5867	u32UpdateIntervalTSC += pGipCpu->au32TSCHistory[5];
5868	u32UpdateIntervalTSC += pGipCpu->au32TSCHistory[6];
5869	u32UpdateIntervalTSC += pGipCpu->au32TSCHistory[7];
5870	u32UpdateIntervalTSC >>= 2;
5871	u32UpdateIntervalTSC += u32;
5872	u32UpdateIntervalTSC >>= 1;
5873
5874	/* Value chosen for a 2GHz Athlon64 running linux 2.6.10/11, . */
5875	u32UpdateIntervalTSCSlack = u32UpdateIntervalTSC >> 14;
5876	}
5877	else if (pGip->u32UpdateHz >= 90)
5878	{
5879	u32UpdateIntervalTSC = (uint32_t)u64TSCDelta;
5880	u32UpdateIntervalTSC += pGipCpu->au32TSCHistory[(iTSCHistoryHead - 1) & 7];
5881	u32UpdateIntervalTSC >>= 1;
5882
5883	/* value chosen on a 2GHz thinkpad running windows */
5884	u32UpdateIntervalTSCSlack = u32UpdateIntervalTSC >> 7;
5885	}
5886	else
5887	{
5888	u32UpdateIntervalTSC = (uint32_t)u64TSCDelta;
5889
5890	/* This value hasn't be checked yet.. waiting for OS/2 and 33Hz timers.. :-) */
5891	u32UpdateIntervalTSCSlack = u32UpdateIntervalTSC >> 6;
5892	}
5893	ASMAtomicWriteU32(&pGipCpu->u32UpdateIntervalTSC, u32UpdateIntervalTSC + u32UpdateIntervalTSCSlack);
5894
5895	/*
5896	* CpuHz.
5897	*/
5898	u64CpuHz = ASMMult2xU32RetU64(u32UpdateIntervalTSC, pGip->u32UpdateHz);
5899	ASMAtomicWriteU64(&pGipCpu->u64CpuHz, u64CpuHz);
5900	}
5901
5902
5903	/**
5904	* Updates the GIP.
5905	*
5906	* @param pDevExt The device extension.
5907	* @param u64NanoTS The current nanosecond timesamp.
5908	* @param u64TSC The current TSC timesamp.
5909	* @param idCpu The CPU ID.
5910	* @param iTick The current timer tick.
5911	*/
5912	static void supdrvGipUpdate(PSUPDRVDEVEXT pDevExt, uint64_t u64NanoTS, uint64_t u64TSC, RTCPUID idCpu, uint64_t iTick)
5913	{
5914	/*
5915	* Determine the relevant CPU data.
5916	*/
5917	PSUPGIPCPU pGipCpu;
5918	PSUPGLOBALINFOPAGE pGip = pDevExt->pGip;
5919	AssertPtrReturnVoid(pGip);
5920
5921	if (pGip->u32Mode != SUPGIPMODE_ASYNC_TSC)
5922	pGipCpu = &pGip->aCPUs[0];
5923	else
5924	{
5925	unsigned iCpu = pGip->aiCpuFromApicId[ASMGetApicId()];
5926	if (RT_UNLIKELY(iCpu >= pGip->cCpus))
5927	return;
5928	pGipCpu = &pGip->aCPUs[iCpu];
5929	if (RT_UNLIKELY(pGipCpu->idCpu != idCpu))
5930	return;
5931	}
5932
5933	/*
5934	* Start update transaction.
5935	*/
5936	if (!(ASMAtomicIncU32(&pGipCpu->u32TransactionId) & 1))
5937	{
5938	/* this can happen on win32 if we're taking to long and there are more CPUs around. shouldn't happen though. */
5939	AssertMsgFailed(("Invalid transaction id, %#x, not odd!\n", pGipCpu->u32TransactionId));
5940	ASMAtomicIncU32(&pGipCpu->u32TransactionId);
5941	pGipCpu->cErrors++;
5942	return;
5943	}
5944
5945	/*
5946	* Recalc the update frequency every 0x800th time.
5947	*/
5948	if (!(pGipCpu->u32TransactionId & (GIP_UPDATEHZ_RECALC_FREQ * 2 - 2)))
5949	{
5950	if (pGip->u64NanoTSLastUpdateHz)
5951	{
5952	#ifdef RT_ARCH_AMD64 /** @todo fix 64-bit div here to work on x86 linux. */
5953	uint64_t u64Delta = u64NanoTS - pGip->u64NanoTSLastUpdateHz;
5954	uint32_t u32UpdateHz = (uint32_t)((UINT64_C(1000000000) * GIP_UPDATEHZ_RECALC_FREQ) / u64Delta);
5955	if (u32UpdateHz <= 2000 && u32UpdateHz >= 30)
5956	{
5957	ASMAtomicWriteU32(&pGip->u32UpdateHz, u32UpdateHz);
5958	ASMAtomicWriteU32(&pGip->u32UpdateIntervalNS, 1000000000 / u32UpdateHz);
5959	}
5960	#endif
5961	}
5962	ASMAtomicWriteU64(&pGip->u64NanoTSLastUpdateHz, u64NanoTS);
5963	}
5964
5965	/*
5966	* Update the data.
5967	*/
5968	supdrvGipDoUpdateCpu(pDevExt, pGipCpu, u64NanoTS, u64TSC, iTick);
5969
5970	/*
5971	* Complete transaction.
5972	*/
5973	ASMAtomicIncU32(&pGipCpu->u32TransactionId);
5974	}
5975
5976
5977	/**
5978	* Updates the per cpu GIP data for the calling cpu.
5979	*
5980	* @param pDevExt The device extension.
5981	* @param u64NanoTS The current nanosecond timesamp.
5982	* @param u64TSC The current TSC timesamp.
5983	* @param idCpu The CPU ID.
5984	* @param idApic The APIC id for the CPU index.
5985	* @param iTick The current timer tick.
5986	*/
5987	static void supdrvGipUpdatePerCpu(PSUPDRVDEVEXT pDevExt, uint64_t u64NanoTS, uint64_t u64TSC,
5988	RTCPUID idCpu, uint8_t idApic, uint64_t iTick)
5989	{
5990	uint32_t iCpu;
5991	PSUPGLOBALINFOPAGE pGip = pDevExt->pGip;
5992
5993	/*
5994	* Avoid a potential race when a CPU online notification doesn't fire on
5995	* the onlined CPU but the tick creeps in before the event notification is
5996	* run.
5997	*/
5998	if (RT_UNLIKELY(iTick == 1))
5999	{
6000	iCpu = supdrvGipCpuIndexFromCpuId(pGip, idCpu);
6001	if (pGip->aCPUs[iCpu].enmState == SUPGIPCPUSTATE_OFFLINE)
6002	supdrvGipMpEventOnline(pDevExt, idCpu);
6003	}
6004
6005	iCpu = pGip->aiCpuFromApicId[idApic];
6006	if (RT_LIKELY(iCpu < pGip->cCpus))
6007	{
6008	PSUPGIPCPU pGipCpu = &pGip->aCPUs[iCpu];
6009	if (pGipCpu->idCpu == idCpu)
6010	{
6011	/*
6012	* Start update transaction.
6013	*/
6014	if (!(ASMAtomicIncU32(&pGipCpu->u32TransactionId) & 1))
6015	{
6016	AssertMsgFailed(("Invalid transaction id, %#x, not odd!\n", pGipCpu->u32TransactionId));
6017	ASMAtomicIncU32(&pGipCpu->u32TransactionId);
6018	pGipCpu->cErrors++;
6019	return;
6020	}
6021
6022	/*
6023	* Update the data.
6024	*/
6025	supdrvGipDoUpdateCpu(pDevExt, pGipCpu, u64NanoTS, u64TSC, iTick);
6026
6027	/*
6028	* Complete transaction.
6029	*/
6030	ASMAtomicIncU32(&pGipCpu->u32TransactionId);
6031	}
6032	}
6033	}
6034

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source: vbox/trunk/src/VBox/HostDrivers/Support/SUPDrv.c@ 48306

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