SUPDrv.c@ 49787

Last change on this file since 49787 was 49787, checked in by vboxsync, 11 years ago
OS X host: HID LEDs sync: move built-in keyboard resume code from VBoxUSB.kext to VBoxDrv.kext.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 229.1 KB

Line
1	/* $Id: SUPDrv.c 49787 2013-12-05 11:26:00Z 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 supdrvIOCtl_MsrProber(PSUPDRVDEVEXT pDevExt, PSUPMSRPROBER pReq);
128	static int supdrvGipCreate(PSUPDRVDEVEXT pDevExt);
129	static void supdrvGipDestroy(PSUPDRVDEVEXT pDevExt);
130	static DECLCALLBACK(void) supdrvGipSyncTimer(PRTTIMER pTimer, void *pvUser, uint64_t iTick);
131	static DECLCALLBACK(void) supdrvGipAsyncTimer(PRTTIMER pTimer, void *pvUser, uint64_t iTick);
132	static DECLCALLBACK(void) supdrvGipMpEvent(RTMPEVENT enmEvent, RTCPUID idCpu, void *pvUser);
133	static void supdrvGipInit(PSUPDRVDEVEXT pDevExt, PSUPGLOBALINFOPAGE pGip, RTHCPHYS HCPhys,
134	uint64_t u64NanoTS, unsigned uUpdateHz, unsigned cCpus);
135	static DECLCALLBACK(void) supdrvGipInitOnCpu(RTCPUID idCpu, void pvUser1, void pvUser2);
136	static void supdrvGipTerm(PSUPGLOBALINFOPAGE pGip);
137	static void supdrvGipUpdate(PSUPDRVDEVEXT pDevExt, uint64_t u64NanoTS, uint64_t u64TSC, RTCPUID idCpu, uint64_t iTick);
138	static void supdrvGipUpdatePerCpu(PSUPDRVDEVEXT pDevExt, uint64_t u64NanoTS, uint64_t u64TSC,
139	RTCPUID idCpu, uint8_t idApic, uint64_t iTick);
140	static void supdrvGipInitCpu(PSUPGLOBALINFOPAGE pGip, PSUPGIPCPU pCpu, uint64_t u64NanoTS);
141	static int supdrvIOCtl_ResumeBuiltinKbd(void);
142
143
144	/*******************************************************************************
145	* Global Variables *
146	*******************************************************************************/
147	DECLEXPORT(PSUPGLOBALINFOPAGE) g_pSUPGlobalInfoPage = NULL;
148
149	/**
150	* Array of the R0 SUP API.
151	*/
152	static SUPFUNC g_aFunctions[] =
153	{
154	/* SED: START */
155	/* name function */
156	/* Entries with absolute addresses determined at runtime, fixup
157	code makes ugly ASSUMPTIONS about the order here: */
158	{ "SUPR0AbsIs64bit", (void *)0 },
159	{ "SUPR0Abs64bitKernelCS", (void *)0 },
160	{ "SUPR0Abs64bitKernelSS", (void *)0 },
161	{ "SUPR0Abs64bitKernelDS", (void *)0 },
162	{ "SUPR0AbsKernelCS", (void *)0 },
163	{ "SUPR0AbsKernelSS", (void *)0 },
164	{ "SUPR0AbsKernelDS", (void *)0 },
165	{ "SUPR0AbsKernelES", (void *)0 },
166	{ "SUPR0AbsKernelFS", (void *)0 },
167	{ "SUPR0AbsKernelGS", (void *)0 },
168	/* Normal function pointers: */
169	{ "g_pSUPGlobalInfoPage", (void )&g_pSUPGlobalInfoPage }, / SED: DATA */
170	{ "SUPGetGIP", (void *)SUPGetGIP },
171	{ "SUPR0ComponentDeregisterFactory", (void *)SUPR0ComponentDeregisterFactory },
172	{ "SUPR0ComponentQueryFactory", (void *)SUPR0ComponentQueryFactory },
173	{ "SUPR0ComponentRegisterFactory", (void *)SUPR0ComponentRegisterFactory },
174	{ "SUPR0ContAlloc", (void *)SUPR0ContAlloc },
175	{ "SUPR0ContFree", (void *)SUPR0ContFree },
176	{ "SUPR0EnableVTx", (void *)SUPR0EnableVTx },
177	{ "SUPR0SuspendVTxOnCpu", (void *)SUPR0SuspendVTxOnCpu },
178	{ "SUPR0ResumeVTxOnCpu", (void *)SUPR0ResumeVTxOnCpu },
179	{ "SUPR0GetPagingMode", (void *)SUPR0GetPagingMode },
180	{ "SUPR0LockMem", (void *)SUPR0LockMem },
181	{ "SUPR0LowAlloc", (void *)SUPR0LowAlloc },
182	{ "SUPR0LowFree", (void *)SUPR0LowFree },
183	{ "SUPR0MemAlloc", (void *)SUPR0MemAlloc },
184	{ "SUPR0MemFree", (void *)SUPR0MemFree },
185	{ "SUPR0MemGetPhys", (void *)SUPR0MemGetPhys },
186	{ "SUPR0ObjAddRef", (void *)SUPR0ObjAddRef },
187	{ "SUPR0ObjAddRefEx", (void *)SUPR0ObjAddRefEx },
188	{ "SUPR0ObjRegister", (void *)SUPR0ObjRegister },
189	{ "SUPR0ObjRelease", (void *)SUPR0ObjRelease },
190	{ "SUPR0ObjVerifyAccess", (void *)SUPR0ObjVerifyAccess },
191	{ "SUPR0PageAllocEx", (void *)SUPR0PageAllocEx },
192	{ "SUPR0PageFree", (void *)SUPR0PageFree },
193	{ "SUPR0Printf", (void *)SUPR0Printf },
194	{ "SUPR0TracerDeregisterDrv", (void *)SUPR0TracerDeregisterDrv },
195	{ "SUPR0TracerDeregisterImpl", (void *)SUPR0TracerDeregisterImpl },
196	{ "SUPR0TracerFireProbe", (void *)SUPR0TracerFireProbe },
197	{ "SUPR0TracerRegisterDrv", (void *)SUPR0TracerRegisterDrv },
198	{ "SUPR0TracerRegisterImpl", (void *)SUPR0TracerRegisterImpl },
199	{ "SUPR0TracerRegisterModule", (void *)SUPR0TracerRegisterModule },
200	{ "SUPR0TracerUmodProbeFire", (void *)SUPR0TracerUmodProbeFire },
201	{ "SUPR0UnlockMem", (void *)SUPR0UnlockMem },
202	{ "SUPSemEventClose", (void *)SUPSemEventClose },
203	{ "SUPSemEventCreate", (void *)SUPSemEventCreate },
204	{ "SUPSemEventGetResolution", (void *)SUPSemEventGetResolution },
205	{ "SUPSemEventMultiClose", (void *)SUPSemEventMultiClose },
206	{ "SUPSemEventMultiCreate", (void *)SUPSemEventMultiCreate },
207	{ "SUPSemEventMultiGetResolution", (void *)SUPSemEventMultiGetResolution },
208	{ "SUPSemEventMultiReset", (void *)SUPSemEventMultiReset },
209	{ "SUPSemEventMultiSignal", (void *)SUPSemEventMultiSignal },
210	{ "SUPSemEventMultiWait", (void *)SUPSemEventMultiWait },
211	{ "SUPSemEventMultiWaitNoResume", (void *)SUPSemEventMultiWaitNoResume },
212	{ "SUPSemEventMultiWaitNsAbsIntr", (void *)SUPSemEventMultiWaitNsAbsIntr },
213	{ "SUPSemEventMultiWaitNsRelIntr", (void *)SUPSemEventMultiWaitNsRelIntr },
214	{ "SUPSemEventSignal", (void *)SUPSemEventSignal },
215	{ "SUPSemEventWait", (void *)SUPSemEventWait },
216	{ "SUPSemEventWaitNoResume", (void *)SUPSemEventWaitNoResume },
217	{ "SUPSemEventWaitNsAbsIntr", (void *)SUPSemEventWaitNsAbsIntr },
218	{ "SUPSemEventWaitNsRelIntr", (void *)SUPSemEventWaitNsRelIntr },
219
220	{ "RTAssertAreQuiet", (void *)RTAssertAreQuiet },
221	{ "RTAssertMayPanic", (void *)RTAssertMayPanic },
222	{ "RTAssertMsg1", (void *)RTAssertMsg1 },
223	{ "RTAssertMsg2AddV", (void *)RTAssertMsg2AddV },
224	{ "RTAssertMsg2V", (void *)RTAssertMsg2V },
225	{ "RTAssertSetMayPanic", (void *)RTAssertSetMayPanic },
226	{ "RTAssertSetQuiet", (void *)RTAssertSetQuiet },
227	{ "RTCrc32", (void *)RTCrc32 },
228	{ "RTCrc32Finish", (void *)RTCrc32Finish },
229	{ "RTCrc32Process", (void *)RTCrc32Process },
230	{ "RTCrc32Start", (void *)RTCrc32Start },
231	{ "RTErrConvertFromErrno", (void *)RTErrConvertFromErrno },
232	{ "RTErrConvertToErrno", (void *)RTErrConvertToErrno },
233	{ "RTHandleTableAllocWithCtx", (void *)RTHandleTableAllocWithCtx },
234	{ "RTHandleTableCreate", (void *)RTHandleTableCreate },
235	{ "RTHandleTableCreateEx", (void *)RTHandleTableCreateEx },
236	{ "RTHandleTableDestroy", (void *)RTHandleTableDestroy },
237	{ "RTHandleTableFreeWithCtx", (void *)RTHandleTableFreeWithCtx },
238	{ "RTHandleTableLookupWithCtx", (void *)RTHandleTableLookupWithCtx },
239	{ "RTLogDefaultInstance", (void *)RTLogDefaultInstance },
240	{ "RTLogGetDefaultInstance", (void *)RTLogGetDefaultInstance },
241	{ "RTLogLoggerExV", (void *)RTLogLoggerExV },
242	{ "RTLogPrintfV", (void *)RTLogPrintfV },
243	{ "RTLogRelDefaultInstance", (void *)RTLogRelDefaultInstance },
244	{ "RTLogSetDefaultInstanceThread", (void *)RTLogSetDefaultInstanceThread },
245	{ "RTMemAllocExTag", (void *)RTMemAllocExTag },
246	{ "RTMemAllocTag", (void *)RTMemAllocTag },
247	{ "RTMemAllocVarTag", (void *)RTMemAllocVarTag },
248	{ "RTMemAllocZTag", (void *)RTMemAllocZTag },
249	{ "RTMemAllocZVarTag", (void *)RTMemAllocZVarTag },
250	{ "RTMemDupExTag", (void *)RTMemDupExTag },
251	{ "RTMemDupTag", (void *)RTMemDupTag },
252	{ "RTMemFree", (void *)RTMemFree },
253	{ "RTMemFreeEx", (void *)RTMemFreeEx },
254	{ "RTMemReallocTag", (void *)RTMemReallocTag },
255	{ "RTMpCpuId", (void *)RTMpCpuId },
256	{ "RTMpCpuIdFromSetIndex", (void *)RTMpCpuIdFromSetIndex },
257	{ "RTMpCpuIdToSetIndex", (void *)RTMpCpuIdToSetIndex },
258	{ "RTMpGetArraySize", (void *)RTMpGetArraySize },
259	{ "RTMpGetCount", (void *)RTMpGetCount },
260	{ "RTMpGetMaxCpuId", (void *)RTMpGetMaxCpuId },
261	{ "RTMpGetOnlineCount", (void *)RTMpGetOnlineCount },
262	{ "RTMpGetOnlineSet", (void *)RTMpGetOnlineSet },
263	{ "RTMpGetSet", (void *)RTMpGetSet },
264	{ "RTMpIsCpuOnline", (void *)RTMpIsCpuOnline },
265	{ "RTMpIsCpuPossible", (void *)RTMpIsCpuPossible },
266	{ "RTMpIsCpuWorkPending", (void *)RTMpIsCpuWorkPending },
267	{ "RTMpNotificationDeregister", (void *)RTMpNotificationDeregister },
268	{ "RTMpNotificationRegister", (void *)RTMpNotificationRegister },
269	{ "RTMpOnAll", (void *)RTMpOnAll },
270	{ "RTMpOnOthers", (void *)RTMpOnOthers },
271	{ "RTMpOnSpecific", (void *)RTMpOnSpecific },
272	{ "RTMpPokeCpu", (void *)RTMpPokeCpu },
273	{ "RTNetIPv4AddDataChecksum", (void *)RTNetIPv4AddDataChecksum },
274	{ "RTNetIPv4AddTCPChecksum", (void *)RTNetIPv4AddTCPChecksum },
275	{ "RTNetIPv4AddUDPChecksum", (void *)RTNetIPv4AddUDPChecksum },
276	{ "RTNetIPv4FinalizeChecksum", (void *)RTNetIPv4FinalizeChecksum },
277	{ "RTNetIPv4HdrChecksum", (void *)RTNetIPv4HdrChecksum },
278	{ "RTNetIPv4IsDHCPValid", (void *)RTNetIPv4IsDHCPValid },
279	{ "RTNetIPv4IsHdrValid", (void *)RTNetIPv4IsHdrValid },
280	{ "RTNetIPv4IsTCPSizeValid", (void *)RTNetIPv4IsTCPSizeValid },
281	{ "RTNetIPv4IsTCPValid", (void *)RTNetIPv4IsTCPValid },
282	{ "RTNetIPv4IsUDPSizeValid", (void *)RTNetIPv4IsUDPSizeValid },
283	{ "RTNetIPv4IsUDPValid", (void *)RTNetIPv4IsUDPValid },
284	{ "RTNetIPv4PseudoChecksum", (void *)RTNetIPv4PseudoChecksum },
285	{ "RTNetIPv4PseudoChecksumBits", (void *)RTNetIPv4PseudoChecksumBits },
286	{ "RTNetIPv4TCPChecksum", (void *)RTNetIPv4TCPChecksum },
287	{ "RTNetIPv4UDPChecksum", (void *)RTNetIPv4UDPChecksum },
288	{ "RTNetIPv6PseudoChecksum", (void *)RTNetIPv6PseudoChecksum },
289	{ "RTNetIPv6PseudoChecksumBits", (void *)RTNetIPv6PseudoChecksumBits },
290	{ "RTNetIPv6PseudoChecksumEx", (void *)RTNetIPv6PseudoChecksumEx },
291	{ "RTNetTCPChecksum", (void *)RTNetTCPChecksum },
292	{ "RTNetUDPChecksum", (void *)RTNetUDPChecksum },
293	{ "RTPowerNotificationDeregister", (void *)RTPowerNotificationDeregister },
294	{ "RTPowerNotificationRegister", (void *)RTPowerNotificationRegister },
295	{ "RTProcSelf", (void *)RTProcSelf },
296	{ "RTR0AssertPanicSystem", (void *)RTR0AssertPanicSystem },
297	{ "RTR0MemAreKrnlAndUsrDifferent", (void *)RTR0MemAreKrnlAndUsrDifferent },
298	{ "RTR0MemKernelIsValidAddr", (void *)RTR0MemKernelIsValidAddr },
299	{ "RTR0MemKernelCopyFrom", (void *)RTR0MemKernelCopyFrom },
300	{ "RTR0MemKernelCopyTo", (void *)RTR0MemKernelCopyTo },
301	{ "RTR0MemObjAddress", (void *)RTR0MemObjAddress },
302	{ "RTR0MemObjAddressR3", (void *)RTR0MemObjAddressR3 },
303	{ "RTR0MemObjAllocContTag", (void *)RTR0MemObjAllocContTag },
304	{ "RTR0MemObjAllocLowTag", (void *)RTR0MemObjAllocLowTag },
305	{ "RTR0MemObjAllocPageTag", (void *)RTR0MemObjAllocPageTag },
306	{ "RTR0MemObjAllocPhysExTag", (void *)RTR0MemObjAllocPhysExTag },
307	{ "RTR0MemObjAllocPhysNCTag", (void *)RTR0MemObjAllocPhysNCTag },
308	{ "RTR0MemObjAllocPhysTag", (void *)RTR0MemObjAllocPhysTag },
309	{ "RTR0MemObjEnterPhysTag", (void *)RTR0MemObjEnterPhysTag },
310	{ "RTR0MemObjFree", (void *)RTR0MemObjFree },
311	{ "RTR0MemObjGetPagePhysAddr", (void *)RTR0MemObjGetPagePhysAddr },
312	{ "RTR0MemObjIsMapping", (void *)RTR0MemObjIsMapping },
313	{ "RTR0MemObjLockUserTag", (void *)RTR0MemObjLockUserTag },
314	{ "RTR0MemObjMapKernelExTag", (void *)RTR0MemObjMapKernelExTag },
315	{ "RTR0MemObjMapKernelTag", (void *)RTR0MemObjMapKernelTag },
316	{ "RTR0MemObjMapUserTag", (void *)RTR0MemObjMapUserTag },
317	{ "RTR0MemObjProtect", (void *)RTR0MemObjProtect },
318	{ "RTR0MemObjSize", (void *)RTR0MemObjSize },
319	{ "RTR0MemUserCopyFrom", (void *)RTR0MemUserCopyFrom },
320	{ "RTR0MemUserCopyTo", (void *)RTR0MemUserCopyTo },
321	{ "RTR0MemUserIsValidAddr", (void *)RTR0MemUserIsValidAddr },
322	{ "RTR0ProcHandleSelf", (void *)RTR0ProcHandleSelf },
323	{ "RTSemEventCreate", (void *)RTSemEventCreate },
324	{ "RTSemEventDestroy", (void *)RTSemEventDestroy },
325	{ "RTSemEventGetResolution", (void *)RTSemEventGetResolution },
326	{ "RTSemEventMultiCreate", (void *)RTSemEventMultiCreate },
327	{ "RTSemEventMultiDestroy", (void *)RTSemEventMultiDestroy },
328	{ "RTSemEventMultiGetResolution", (void *)RTSemEventMultiGetResolution },
329	{ "RTSemEventMultiReset", (void *)RTSemEventMultiReset },
330	{ "RTSemEventMultiSignal", (void *)RTSemEventMultiSignal },
331	{ "RTSemEventMultiWait", (void *)RTSemEventMultiWait },
332	{ "RTSemEventMultiWaitEx", (void *)RTSemEventMultiWaitEx },
333	{ "RTSemEventMultiWaitExDebug", (void *)RTSemEventMultiWaitExDebug },
334	{ "RTSemEventMultiWaitNoResume", (void *)RTSemEventMultiWaitNoResume },
335	{ "RTSemEventSignal", (void *)RTSemEventSignal },
336	{ "RTSemEventWait", (void *)RTSemEventWait },
337	{ "RTSemEventWaitEx", (void *)RTSemEventWaitEx },
338	{ "RTSemEventWaitExDebug", (void *)RTSemEventWaitExDebug },
339	{ "RTSemEventWaitNoResume", (void *)RTSemEventWaitNoResume },
340	{ "RTSemFastMutexCreate", (void *)RTSemFastMutexCreate },
341	{ "RTSemFastMutexDestroy", (void *)RTSemFastMutexDestroy },
342	{ "RTSemFastMutexRelease", (void *)RTSemFastMutexRelease },
343	{ "RTSemFastMutexRequest", (void *)RTSemFastMutexRequest },
344	{ "RTSemMutexCreate", (void *)RTSemMutexCreate },
345	{ "RTSemMutexDestroy", (void *)RTSemMutexDestroy },
346	{ "RTSemMutexRelease", (void *)RTSemMutexRelease },
347	{ "RTSemMutexRequest", (void *)RTSemMutexRequest },
348	{ "RTSemMutexRequestDebug", (void *)RTSemMutexRequestDebug },
349	{ "RTSemMutexRequestNoResume", (void *)RTSemMutexRequestNoResume },
350	{ "RTSemMutexRequestNoResumeDebug", (void *)RTSemMutexRequestNoResumeDebug },
351	{ "RTSpinlockAcquire", (void *)RTSpinlockAcquire },
352	{ "RTSpinlockCreate", (void *)RTSpinlockCreate },
353	{ "RTSpinlockDestroy", (void *)RTSpinlockDestroy },
354	{ "RTSpinlockRelease", (void *)RTSpinlockRelease },
355	{ "RTSpinlockReleaseNoInts", (void *)RTSpinlockReleaseNoInts },
356	{ "RTStrCopy", (void *)RTStrCopy },
357	{ "RTStrDupTag", (void *)RTStrDupTag },
358	{ "RTStrFormat", (void *)RTStrFormat },
359	{ "RTStrFormatNumber", (void *)RTStrFormatNumber },
360	{ "RTStrFormatTypeDeregister", (void *)RTStrFormatTypeDeregister },
361	{ "RTStrFormatTypeRegister", (void *)RTStrFormatTypeRegister },
362	{ "RTStrFormatTypeSetUser", (void *)RTStrFormatTypeSetUser },
363	{ "RTStrFormatV", (void *)RTStrFormatV },
364	{ "RTStrFree", (void *)RTStrFree },
365	{ "RTStrNCmp", (void *)RTStrNCmp },
366	{ "RTStrPrintf", (void *)RTStrPrintf },
367	{ "RTStrPrintfEx", (void *)RTStrPrintfEx },
368	{ "RTStrPrintfExV", (void *)RTStrPrintfExV },
369	{ "RTStrPrintfV", (void *)RTStrPrintfV },
370	{ "RTThreadCreate", (void *)RTThreadCreate },
371	{ "RTThreadCtxHooksAreRegistered", (void *)RTThreadCtxHooksAreRegistered },
372	{ "RTThreadCtxHooksCreate", (void *)RTThreadCtxHooksCreate },
373	{ "RTThreadCtxHooksDeregister", (void *)RTThreadCtxHooksDeregister },
374	{ "RTThreadCtxHooksRegister", (void *)RTThreadCtxHooksRegister },
375	{ "RTThreadCtxHooksRelease", (void *)RTThreadCtxHooksRelease },
376	{ "RTThreadCtxHooksRetain", (void *)RTThreadCtxHooksRetain },
377	{ "RTThreadGetName", (void *)RTThreadGetName },
378	{ "RTThreadGetNative", (void *)RTThreadGetNative },
379	{ "RTThreadGetType", (void *)RTThreadGetType },
380	{ "RTThreadIsInInterrupt", (void *)RTThreadIsInInterrupt },
381	{ "RTThreadNativeSelf", (void *)RTThreadNativeSelf },
382	{ "RTThreadPreemptDisable", (void *)RTThreadPreemptDisable },
383	{ "RTThreadPreemptIsEnabled", (void *)RTThreadPreemptIsEnabled },
384	{ "RTThreadPreemptIsPending", (void *)RTThreadPreemptIsPending },
385	{ "RTThreadPreemptIsPendingTrusty", (void *)RTThreadPreemptIsPendingTrusty },
386	{ "RTThreadPreemptIsPossible", (void *)RTThreadPreemptIsPossible },
387	{ "RTThreadPreemptRestore", (void *)RTThreadPreemptRestore },
388	{ "RTThreadSelf", (void *)RTThreadSelf },
389	{ "RTThreadSelfName", (void *)RTThreadSelfName },
390	{ "RTThreadSleep", (void *)RTThreadSleep },
391	{ "RTThreadUserReset", (void *)RTThreadUserReset },
392	{ "RTThreadUserSignal", (void *)RTThreadUserSignal },
393	{ "RTThreadUserWait", (void *)RTThreadUserWait },
394	{ "RTThreadUserWaitNoResume", (void *)RTThreadUserWaitNoResume },
395	{ "RTThreadWait", (void *)RTThreadWait },
396	{ "RTThreadWaitNoResume", (void *)RTThreadWaitNoResume },
397	{ "RTThreadYield", (void *)RTThreadYield },
398	{ "RTTimeMilliTS", (void *)RTTimeMilliTS },
399	{ "RTTimeNanoTS", (void *)RTTimeNanoTS },
400	{ "RTTimeNow", (void *)RTTimeNow },
401	{ "RTTimerCanDoHighResolution", (void *)RTTimerCanDoHighResolution },
402	{ "RTTimerChangeInterval", (void *)RTTimerChangeInterval },
403	{ "RTTimerCreate", (void *)RTTimerCreate },
404	{ "RTTimerCreateEx", (void *)RTTimerCreateEx },
405	{ "RTTimerDestroy", (void *)RTTimerDestroy },
406	{ "RTTimerGetSystemGranularity", (void *)RTTimerGetSystemGranularity },
407	{ "RTTimerReleaseSystemGranularity", (void *)RTTimerReleaseSystemGranularity },
408	{ "RTTimerRequestSystemGranularity", (void *)RTTimerRequestSystemGranularity },
409	{ "RTTimerStart", (void *)RTTimerStart },
410	{ "RTTimerStop", (void *)RTTimerStop },
411	{ "RTTimeSystemMilliTS", (void *)RTTimeSystemMilliTS },
412	{ "RTTimeSystemNanoTS", (void *)RTTimeSystemNanoTS },
413	{ "RTUuidCompare", (void *)RTUuidCompare },
414	{ "RTUuidCompareStr", (void *)RTUuidCompareStr },
415	{ "RTUuidFromStr", (void *)RTUuidFromStr },
416	/* SED: END */
417	};
418
419	#if defined(RT_OS_DARWIN) \|\| defined(RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD)
420	/**
421	* Drag in the rest of IRPT since we share it with the
422	* rest of the kernel modules on darwin.
423	*/
424	PFNRT g_apfnVBoxDrvIPRTDeps[] =
425	{
426	/* VBoxNetAdp */
427	(PFNRT)RTRandBytes,
428	/* VBoxUSB */
429	(PFNRT)RTPathStripFilename,
430	NULL
431	};
432	#endif /* RT_OS_DARWIN \|\| RT_OS_SOLARIS \|\| RT_OS_SOLARIS */
433
434
435	/**
436	* Initializes the device extentsion structure.
437	*
438	* @returns IPRT status code.
439	* @param pDevExt The device extension to initialize.
440	* @param cbSession The size of the session structure. The size of
441	* SUPDRVSESSION may be smaller when SUPDRV_AGNOSTIC is
442	* defined because we're skipping the OS specific members
443	* then.
444	*/
445	int VBOXCALL supdrvInitDevExt(PSUPDRVDEVEXT pDevExt, size_t cbSession)
446	{
447	int rc;
448
449	#ifdef SUPDRV_WITH_RELEASE_LOGGER
450	/*
451	* Create the release log.
452	*/
453	static const char * const s_apszGroups[] = VBOX_LOGGROUP_NAMES;
454	PRTLOGGER pRelLogger;
455	rc = RTLogCreate(&pRelLogger, 0 /* fFlags */, "all",
456	"VBOX_RELEASE_LOG", RT_ELEMENTS(s_apszGroups), s_apszGroups, RTLOGDEST_STDOUT \| RTLOGDEST_DEBUGGER, NULL);
457	if (RT_SUCCESS(rc))
458	RTLogRelSetDefaultInstance(pRelLogger);
459	/** @todo Add native hook for getting logger config parameters and setting
460	* them. On linux we should use the module parameter stuff... */
461	#endif
462
463	/*
464	* Initialize it.
465	*/
466	memset(pDevExt, 0, sizeof(*pDevExt));
467	rc = RTSpinlockCreate(&pDevExt->Spinlock, RTSPINLOCK_FLAGS_INTERRUPT_SAFE, "SUPDrvDevExt");
468	if (RT_SUCCESS(rc))
469	{
470	rc = RTSpinlockCreate(&pDevExt->hGipSpinlock, RTSPINLOCK_FLAGS_INTERRUPT_SAFE, "SUPDrvGip");
471	if (RT_SUCCESS(rc))
472	{
473	#ifdef SUPDRV_USE_MUTEX_FOR_LDR
474	rc = RTSemMutexCreate(&pDevExt->mtxLdr);
475	#else
476	rc = RTSemFastMutexCreate(&pDevExt->mtxLdr);
477	#endif
478	if (RT_SUCCESS(rc))
479	{
480	rc = RTSemFastMutexCreate(&pDevExt->mtxComponentFactory);
481	if (RT_SUCCESS(rc))
482	{
483	#ifdef SUPDRV_USE_MUTEX_FOR_LDR
484	rc = RTSemMutexCreate(&pDevExt->mtxGip);
485	#else
486	rc = RTSemFastMutexCreate(&pDevExt->mtxGip);
487	#endif
488	if (RT_SUCCESS(rc))
489	{
490	rc = supdrvGipCreate(pDevExt);
491	if (RT_SUCCESS(rc))
492	{
493	rc = supdrvTracerInit(pDevExt);
494	if (RT_SUCCESS(rc))
495	{
496	pDevExt->pLdrInitImage = NULL;
497	pDevExt->hLdrInitThread = NIL_RTNATIVETHREAD;
498	pDevExt->u32Cookie = BIRD; /** @todo make this random? */
499	pDevExt->cbSession = (uint32_t)cbSession;
500
501	/*
502	* Fixup the absolute symbols.
503	*
504	* Because of the table indexing assumptions we'll have a little #ifdef orgy
505	* here rather than distributing this to OS specific files. At least for now.
506	*/
507	#ifdef RT_OS_DARWIN
508	# if ARCH_BITS == 32
509	if (SUPR0GetPagingMode() >= SUPPAGINGMODE_AMD64)
510	{
511	g_aFunctions[0].pfn = (void )1; / SUPR0AbsIs64bit */
512	g_aFunctions[1].pfn = (void )0x80; / SUPR0Abs64bitKernelCS - KERNEL64_CS, seg.h */
513	g_aFunctions[2].pfn = (void )0x88; / SUPR0Abs64bitKernelSS - KERNEL64_SS, seg.h */
514	g_aFunctions[3].pfn = (void )0x88; / SUPR0Abs64bitKernelDS - KERNEL64_SS, seg.h */
515	}
516	else
517	g_aFunctions[0].pfn = g_aFunctions[1].pfn = g_aFunctions[2].pfn = g_aFunctions[4].pfn = (void *)0;
518	g_aFunctions[4].pfn = (void )0x08; / SUPR0AbsKernelCS - KERNEL_CS, seg.h */
519	g_aFunctions[5].pfn = (void )0x10; / SUPR0AbsKernelSS - KERNEL_DS, seg.h */
520	g_aFunctions[6].pfn = (void )0x10; / SUPR0AbsKernelDS - KERNEL_DS, seg.h */
521	g_aFunctions[7].pfn = (void )0x10; / SUPR0AbsKernelES - KERNEL_DS, seg.h */
522	g_aFunctions[8].pfn = (void )0x10; / SUPR0AbsKernelFS - KERNEL_DS, seg.h */
523	g_aFunctions[9].pfn = (void )0x48; / SUPR0AbsKernelGS - CPU_DATA_GS, seg.h */
524	# else /* 64-bit darwin: */
525	g_aFunctions[0].pfn = (void )1; / SUPR0AbsIs64bit */
526	g_aFunctions[1].pfn = (void )(uintptr_t)ASMGetCS(); / SUPR0Abs64bitKernelCS */
527	g_aFunctions[2].pfn = (void )(uintptr_t)ASMGetSS(); / SUPR0Abs64bitKernelSS */
528	g_aFunctions[3].pfn = (void )0; / SUPR0Abs64bitKernelDS */
529	g_aFunctions[4].pfn = (void )(uintptr_t)ASMGetCS(); / SUPR0AbsKernelCS */
530	g_aFunctions[5].pfn = (void )(uintptr_t)ASMGetSS(); / SUPR0AbsKernelSS */
531	g_aFunctions[6].pfn = (void )0; / SUPR0AbsKernelDS */
532	g_aFunctions[7].pfn = (void )0; / SUPR0AbsKernelES */
533	g_aFunctions[8].pfn = (void )0; / SUPR0AbsKernelFS */
534	g_aFunctions[9].pfn = (void )0; / SUPR0AbsKernelGS */
535
536	# endif
537	#else /* !RT_OS_DARWIN */
538	# if ARCH_BITS == 64
539	g_aFunctions[0].pfn = (void )1; / SUPR0AbsIs64bit */
540	g_aFunctions[1].pfn = (void )(uintptr_t)ASMGetCS(); / SUPR0Abs64bitKernelCS */
541	g_aFunctions[2].pfn = (void )(uintptr_t)ASMGetSS(); / SUPR0Abs64bitKernelSS */
542	g_aFunctions[3].pfn = (void )(uintptr_t)ASMGetDS(); / SUPR0Abs64bitKernelDS */
543	# else
544	g_aFunctions[0].pfn = g_aFunctions[1].pfn = g_aFunctions[2].pfn = g_aFunctions[4].pfn = (void *)0;
545	# endif
546	g_aFunctions[4].pfn = (void )(uintptr_t)ASMGetCS(); / SUPR0AbsKernelCS */
547	g_aFunctions[5].pfn = (void )(uintptr_t)ASMGetSS(); / SUPR0AbsKernelSS */
548	g_aFunctions[6].pfn = (void )(uintptr_t)ASMGetDS(); / SUPR0AbsKernelDS */
549	g_aFunctions[7].pfn = (void )(uintptr_t)ASMGetES(); / SUPR0AbsKernelES */
550	g_aFunctions[8].pfn = (void )(uintptr_t)ASMGetFS(); / SUPR0AbsKernelFS */
551	g_aFunctions[9].pfn = (void )(uintptr_t)ASMGetGS(); / SUPR0AbsKernelGS */
552	#endif /* !RT_OS_DARWIN */
553	return VINF_SUCCESS;
554	}
555
556	supdrvGipDestroy(pDevExt);
557	}
558
559	#ifdef SUPDRV_USE_MUTEX_FOR_GIP
560	RTSemMutexDestroy(pDevExt->mtxGip);
561	pDevExt->mtxGip = NIL_RTSEMMUTEX;
562	#else
563	RTSemFastMutexDestroy(pDevExt->mtxGip);
564	pDevExt->mtxGip = NIL_RTSEMFASTMUTEX;
565	#endif
566	}
567	RTSemFastMutexDestroy(pDevExt->mtxComponentFactory);
568	pDevExt->mtxComponentFactory = NIL_RTSEMFASTMUTEX;
569	}
570	#ifdef SUPDRV_USE_MUTEX_FOR_LDR
571	RTSemMutexDestroy(pDevExt->mtxLdr);
572	pDevExt->mtxLdr = NIL_RTSEMMUTEX;
573	#else
574	RTSemFastMutexDestroy(pDevExt->mtxLdr);
575	pDevExt->mtxLdr = NIL_RTSEMFASTMUTEX;
576	#endif
577	}
578	RTSpinlockDestroy(pDevExt->hGipSpinlock);
579	pDevExt->hGipSpinlock = NIL_RTSPINLOCK;
580	}
581	RTSpinlockDestroy(pDevExt->Spinlock);
582	pDevExt->Spinlock = NIL_RTSPINLOCK;
583	}
584	#ifdef SUPDRV_WITH_RELEASE_LOGGER
585	RTLogDestroy(RTLogRelSetDefaultInstance(NULL));
586	RTLogDestroy(RTLogSetDefaultInstance(NULL));
587	#endif
588
589	return rc;
590	}
591
592
593	/**
594	* Delete the device extension (e.g. cleanup members).
595	*
596	* @param pDevExt The device extension to delete.
597	*/
598	void VBOXCALL supdrvDeleteDevExt(PSUPDRVDEVEXT pDevExt)
599	{
600	PSUPDRVOBJ pObj;
601	PSUPDRVUSAGE pUsage;
602
603	/*
604	* Kill mutexes and spinlocks.
605	*/
606	#ifdef SUPDRV_USE_MUTEX_FOR_GIP
607	RTSemMutexDestroy(pDevExt->mtxGip);
608	pDevExt->mtxGip = NIL_RTSEMMUTEX;
609	#else
610	RTSemFastMutexDestroy(pDevExt->mtxGip);
611	pDevExt->mtxGip = NIL_RTSEMFASTMUTEX;
612	#endif
613	#ifdef SUPDRV_USE_MUTEX_FOR_LDR
614	RTSemMutexDestroy(pDevExt->mtxLdr);
615	pDevExt->mtxLdr = NIL_RTSEMMUTEX;
616	#else
617	RTSemFastMutexDestroy(pDevExt->mtxLdr);
618	pDevExt->mtxLdr = NIL_RTSEMFASTMUTEX;
619	#endif
620	RTSpinlockDestroy(pDevExt->Spinlock);
621	pDevExt->Spinlock = NIL_RTSPINLOCK;
622	RTSemFastMutexDestroy(pDevExt->mtxComponentFactory);
623	pDevExt->mtxComponentFactory = NIL_RTSEMFASTMUTEX;
624
625	/*
626	* Free lists.
627	*/
628	/* objects. */
629	pObj = pDevExt->pObjs;
630	Assert(!pObj); /* (can trigger on forced unloads) */
631	pDevExt->pObjs = NULL;
632	while (pObj)
633	{
634	void *pvFree = pObj;
635	pObj = pObj->pNext;
636	RTMemFree(pvFree);
637	}
638
639	/* usage records. */
640	pUsage = pDevExt->pUsageFree;
641	pDevExt->pUsageFree = NULL;
642	while (pUsage)
643	{
644	void *pvFree = pUsage;
645	pUsage = pUsage->pNext;
646	RTMemFree(pvFree);
647	}
648
649	/* kill the GIP. */
650	supdrvGipDestroy(pDevExt);
651	RTSpinlockDestroy(pDevExt->hGipSpinlock);
652	pDevExt->hGipSpinlock = NIL_RTSPINLOCK;
653
654	supdrvTracerTerm(pDevExt);
655
656	#ifdef SUPDRV_WITH_RELEASE_LOGGER
657	/* destroy the loggers. */
658	RTLogDestroy(RTLogRelSetDefaultInstance(NULL));
659	RTLogDestroy(RTLogSetDefaultInstance(NULL));
660	#endif
661	}
662
663
664	/**
665	* Create session.
666	*
667	* @returns IPRT status code.
668	* @param pDevExt Device extension.
669	* @param fUser Flag indicating whether this is a user or kernel
670	* session.
671	* @param fUnrestricted Unrestricted access (system) or restricted access
672	* (user)?
673	* @param ppSession Where to store the pointer to the session data.
674	*/
675	int VBOXCALL supdrvCreateSession(PSUPDRVDEVEXT pDevExt, bool fUser, bool fUnrestricted, PSUPDRVSESSION *ppSession)
676	{
677	int rc;
678	PSUPDRVSESSION pSession;
679
680	if (!SUP_IS_DEVEXT_VALID(pDevExt))
681	return VERR_INVALID_PARAMETER;
682
683	/*
684	* Allocate memory for the session data.
685	*/
686	pSession = *ppSession = (PSUPDRVSESSION)RTMemAllocZ(pDevExt->cbSession);
687	if (pSession)
688	{
689	/* Initialize session data. */
690	rc = RTSpinlockCreate(&pSession->Spinlock, RTSPINLOCK_FLAGS_INTERRUPT_UNSAFE, "SUPDrvSession");
691	if (!rc)
692	{
693	rc = RTHandleTableCreateEx(&pSession->hHandleTable,
694	RTHANDLETABLE_FLAGS_LOCKED_IRQ_SAFE \| RTHANDLETABLE_FLAGS_CONTEXT,
695	1 /uBase/, 32768 /cMax/, supdrvSessionObjHandleRetain, pSession);
696	if (RT_SUCCESS(rc))
697	{
698	Assert(pSession->Spinlock != NIL_RTSPINLOCK);
699	pSession->pDevExt = pDevExt;
700	pSession->u32Cookie = BIRD_INV;
701	pSession->fUnrestricted = fUnrestricted;
702	pSession->cRefs = 1;
703	/*pSession->pLdrUsage = NULL;
704	pSession->pVM = NULL;
705	pSession->pUsage = NULL;
706	pSession->pGip = NULL;
707	pSession->fGipReferenced = false;
708	pSession->Bundle.cUsed = 0; */
709	pSession->Uid = NIL_RTUID;
710	pSession->Gid = NIL_RTGID;
711	if (fUser)
712	{
713	pSession->Process = RTProcSelf();
714	pSession->R0Process = RTR0ProcHandleSelf();
715	}
716	else
717	{
718	pSession->Process = NIL_RTPROCESS;
719	pSession->R0Process = NIL_RTR0PROCESS;
720	}
721	/pSession->uTracerData = 0;/
722	pSession->hTracerCaller = NIL_RTNATIVETHREAD;
723	RTListInit(&pSession->TpProviders);
724	/pSession->cTpProviders = 0;/
725	/pSession->cTpProbesFiring = 0;/
726	RTListInit(&pSession->TpUmods);
727	/RT_ZERO(pSession->apTpLookupTable);/
728
729	VBOXDRV_SESSION_CREATE(pSession, fUser);
730	LogFlow(("Created session %p initial cookie=%#x\n", pSession, pSession->u32Cookie));
731	return VINF_SUCCESS;
732	}
733
734	RTSpinlockDestroy(pSession->Spinlock);
735	}
736	RTMemFree(pSession);
737	*ppSession = NULL;
738	Log(("Failed to create spinlock, rc=%d!\n", rc));
739	}
740	else
741	rc = VERR_NO_MEMORY;
742
743	return rc;
744	}
745
746
747	/**
748	* Shared code for cleaning up a session (but not quite freeing it).
749	*
750	* This is primarily intended for MAC OS X where we have to clean up the memory
751	* stuff before the file handle is closed.
752	*
753	* @param pDevExt Device extension.
754	* @param pSession Session data.
755	* This data will be freed by this routine.
756	*/
757	static void supdrvCleanupSession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession)
758	{
759	int rc;
760	PSUPDRVBUNDLE pBundle;
761	LogFlow(("supdrvCleanupSession: pSession=%p\n", pSession));
762
763	/*
764	* Remove logger instances related to this session.
765	*/
766	RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pSession);
767
768	/*
769	* Destroy the handle table.
770	*/
771	rc = RTHandleTableDestroy(pSession->hHandleTable, supdrvSessionObjHandleDelete, pSession);
772	AssertRC(rc);
773	pSession->hHandleTable = NIL_RTHANDLETABLE;
774
775	/*
776	* Release object references made in this session.
777	* In theory there should be noone racing us in this session.
778	*/
779	Log2(("release objects - start\n"));
780	if (pSession->pUsage)
781	{
782	PSUPDRVUSAGE pUsage;
783	RTSpinlockAcquire(pDevExt->Spinlock);
784
785	while ((pUsage = pSession->pUsage) != NULL)
786	{
787	PSUPDRVOBJ pObj = pUsage->pObj;
788	pSession->pUsage = pUsage->pNext;
789
790	AssertMsg(pUsage->cUsage >= 1 && pObj->cUsage >= pUsage->cUsage, ("glob %d; sess %d\n", pObj->cUsage, pUsage->cUsage));
791	if (pUsage->cUsage < pObj->cUsage)
792	{
793	pObj->cUsage -= pUsage->cUsage;
794	RTSpinlockRelease(pDevExt->Spinlock);
795	}
796	else
797	{
798	/* Destroy the object and free the record. */
799	if (pDevExt->pObjs == pObj)
800	pDevExt->pObjs = pObj->pNext;
801	else
802	{
803	PSUPDRVOBJ pObjPrev;
804	for (pObjPrev = pDevExt->pObjs; pObjPrev; pObjPrev = pObjPrev->pNext)
805	if (pObjPrev->pNext == pObj)
806	{
807	pObjPrev->pNext = pObj->pNext;
808	break;
809	}
810	Assert(pObjPrev);
811	}
812	RTSpinlockRelease(pDevExt->Spinlock);
813
814	Log(("supdrvCleanupSession: destroying %p/%d (%p/%p) cpid=%RTproc pid=%RTproc dtor=%p\n",
815	pObj, pObj->enmType, pObj->pvUser1, pObj->pvUser2, pObj->CreatorProcess, RTProcSelf(), pObj->pfnDestructor));
816	if (pObj->pfnDestructor)
817	pObj->pfnDestructor(pObj, pObj->pvUser1, pObj->pvUser2);
818	RTMemFree(pObj);
819	}
820
821	/* free it and continue. */
822	RTMemFree(pUsage);
823
824	RTSpinlockAcquire(pDevExt->Spinlock);
825	}
826
827	RTSpinlockRelease(pDevExt->Spinlock);
828	AssertMsg(!pSession->pUsage, ("Some buster reregistered an object during desturction!\n"));
829	}
830	Log2(("release objects - done\n"));
831
832	/*
833	* Do tracer cleanups related to this session.
834	*/
835	Log2(("release tracer stuff - start\n"));
836	supdrvTracerCleanupSession(pDevExt, pSession);
837	Log2(("release tracer stuff - end\n"));
838
839	/*
840	* Release memory allocated in the session.
841	*
842	* We do not serialize this as we assume that the application will
843	* not allocated memory while closing the file handle object.
844	*/
845	Log2(("freeing memory:\n"));
846	pBundle = &pSession->Bundle;
847	while (pBundle)
848	{
849	PSUPDRVBUNDLE pToFree;
850	unsigned i;
851
852	/*
853	* Check and unlock all entries in the bundle.
854	*/
855	for (i = 0; i < RT_ELEMENTS(pBundle->aMem); i++)
856	{
857	if (pBundle->aMem[i].MemObj != NIL_RTR0MEMOBJ)
858	{
859	Log2(("eType=%d pvR0=%p pvR3=%p cb=%ld\n", pBundle->aMem[i].eType, RTR0MemObjAddress(pBundle->aMem[i].MemObj),
860	(void *)RTR0MemObjAddressR3(pBundle->aMem[i].MapObjR3), (long)RTR0MemObjSize(pBundle->aMem[i].MemObj)));
861	if (pBundle->aMem[i].MapObjR3 != NIL_RTR0MEMOBJ)
862	{
863	rc = RTR0MemObjFree(pBundle->aMem[i].MapObjR3, false);
864	AssertRC(rc); /** @todo figure out how to handle this. */
865	pBundle->aMem[i].MapObjR3 = NIL_RTR0MEMOBJ;
866	}
867	rc = RTR0MemObjFree(pBundle->aMem[i].MemObj, true /* fFreeMappings */);
868	AssertRC(rc); /** @todo figure out how to handle this. */
869	pBundle->aMem[i].MemObj = NIL_RTR0MEMOBJ;
870	pBundle->aMem[i].eType = MEMREF_TYPE_UNUSED;
871	}
872	}
873
874	/*
875	* Advance and free previous bundle.
876	*/
877	pToFree = pBundle;
878	pBundle = pBundle->pNext;
879
880	pToFree->pNext = NULL;
881	pToFree->cUsed = 0;
882	if (pToFree != &pSession->Bundle)
883	RTMemFree(pToFree);
884	}
885	Log2(("freeing memory - done\n"));
886
887	/*
888	* Deregister component factories.
889	*/
890	RTSemFastMutexRequest(pDevExt->mtxComponentFactory);
891	Log2(("deregistering component factories:\n"));
892	if (pDevExt->pComponentFactoryHead)
893	{
894	PSUPDRVFACTORYREG pPrev = NULL;
895	PSUPDRVFACTORYREG pCur = pDevExt->pComponentFactoryHead;
896	while (pCur)
897	{
898	if (pCur->pSession == pSession)
899	{
900	/* unlink it */
901	PSUPDRVFACTORYREG pNext = pCur->pNext;
902	if (pPrev)
903	pPrev->pNext = pNext;
904	else
905	pDevExt->pComponentFactoryHead = pNext;
906
907	/* free it */
908	pCur->pNext = NULL;
909	pCur->pSession = NULL;
910	pCur->pFactory = NULL;
911	RTMemFree(pCur);
912
913	/* next */
914	pCur = pNext;
915	}
916	else
917	{
918	/* next */
919	pPrev = pCur;
920	pCur = pCur->pNext;
921	}
922	}
923	}
924	RTSemFastMutexRelease(pDevExt->mtxComponentFactory);
925	Log2(("deregistering component factories - done\n"));
926
927	/*
928	* Loaded images needs to be dereferenced and possibly freed up.
929	*/
930	supdrvLdrLock(pDevExt);
931	Log2(("freeing images:\n"));
932	if (pSession->pLdrUsage)
933	{
934	PSUPDRVLDRUSAGE pUsage = pSession->pLdrUsage;
935	pSession->pLdrUsage = NULL;
936	while (pUsage)
937	{
938	void *pvFree = pUsage;
939	PSUPDRVLDRIMAGE pImage = pUsage->pImage;
940	if (pImage->cUsage > pUsage->cUsage)
941	pImage->cUsage -= pUsage->cUsage;
942	else
943	supdrvLdrFree(pDevExt, pImage);
944	pUsage->pImage = NULL;
945	pUsage = pUsage->pNext;
946	RTMemFree(pvFree);
947	}
948	}
949	supdrvLdrUnlock(pDevExt);
950	Log2(("freeing images - done\n"));
951
952	/*
953	* Unmap the GIP.
954	*/
955	Log2(("umapping GIP:\n"));
956	if (pSession->GipMapObjR3 != NIL_RTR0MEMOBJ)
957	{
958	SUPR0GipUnmap(pSession);
959	pSession->fGipReferenced = 0;
960	}
961	Log2(("umapping GIP - done\n"));
962	}
963
964
965	/**
966	* Shared code for cleaning up a session.
967	*
968	* @param pDevExt Device extension.
969	* @param pSession Session data.
970	* This data will be freed by this routine.
971	*/
972	static void supdrvCloseSession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession)
973	{
974	VBOXDRV_SESSION_CLOSE(pSession);
975
976	/*
977	* Cleanup the session first.
978	*/
979	supdrvCleanupSession(pDevExt, pSession);
980
981	/*
982	* Free the rest of the session stuff.
983	*/
984	RTSpinlockDestroy(pSession->Spinlock);
985	pSession->Spinlock = NIL_RTSPINLOCK;
986	pSession->pDevExt = NULL;
987	RTMemFree(pSession);
988	LogFlow(("supdrvCloseSession: returns\n"));
989	}
990
991
992	/**
993	* Retain a session to make sure it doesn't go away while it is in use.
994	*
995	* @returns New reference count on success, UINT32_MAX on failure.
996	* @param pSession Session data.
997	*/
998	uint32_t VBOXCALL supdrvSessionRetain(PSUPDRVSESSION pSession)
999	{
1000	uint32_t cRefs;
1001	AssertPtrReturn(pSession, UINT32_MAX);
1002	AssertReturn(SUP_IS_SESSION_VALID(pSession), UINT32_MAX);
1003
1004	cRefs = ASMAtomicIncU32(&pSession->cRefs);
1005	AssertMsg(cRefs > 1 && cRefs < _1M, ("%#x %p\n", cRefs, pSession));
1006	return cRefs;
1007	}
1008
1009
1010	/**
1011	* Releases a given session.
1012	*
1013	* @returns New reference count on success (0 if closed), UINT32_MAX on failure.
1014	* @param pSession Session data.
1015	*/
1016	uint32_t VBOXCALL supdrvSessionRelease(PSUPDRVSESSION pSession)
1017	{
1018	uint32_t cRefs;
1019	AssertPtrReturn(pSession, UINT32_MAX);
1020	AssertReturn(SUP_IS_SESSION_VALID(pSession), UINT32_MAX);
1021
1022	cRefs = ASMAtomicDecU32(&pSession->cRefs);
1023	AssertMsg(cRefs < _1M, ("%#x %p\n", cRefs, pSession));
1024	if (cRefs == 0)
1025	supdrvCloseSession(pSession->pDevExt, pSession);
1026	return cRefs;
1027	}
1028
1029
1030	/**
1031	* RTHandleTableDestroy callback used by supdrvCleanupSession.
1032	*
1033	* @returns IPRT status code, see SUPR0ObjAddRef.
1034	* @param hHandleTable The handle table handle. Ignored.
1035	* @param pvObj The object pointer.
1036	* @param pvCtx Context, the handle type. Ignored.
1037	* @param pvUser Session pointer.
1038	*/
1039	static DECLCALLBACK(int) supdrvSessionObjHandleRetain(RTHANDLETABLE hHandleTable, void pvObj, void pvCtx, void *pvUser)
1040	{
1041	NOREF(pvCtx);
1042	NOREF(hHandleTable);
1043	return SUPR0ObjAddRefEx(pvObj, (PSUPDRVSESSION)pvUser, true /fNoBlocking/);
1044	}
1045
1046
1047	/**
1048	* RTHandleTableDestroy callback used by supdrvCleanupSession.
1049	*
1050	* @param hHandleTable The handle table handle. Ignored.
1051	* @param h The handle value. Ignored.
1052	* @param pvObj The object pointer.
1053	* @param pvCtx Context, the handle type. Ignored.
1054	* @param pvUser Session pointer.
1055	*/
1056	static DECLCALLBACK(void) supdrvSessionObjHandleDelete(RTHANDLETABLE hHandleTable, uint32_t h, void pvObj, void pvCtx, void *pvUser)
1057	{
1058	NOREF(pvCtx);
1059	NOREF(h);
1060	NOREF(hHandleTable);
1061	SUPR0ObjRelease(pvObj, (PSUPDRVSESSION)pvUser);
1062	}
1063
1064
1065	/**
1066	* Fast path I/O Control worker.
1067	*
1068	* @returns VBox status code that should be passed down to ring-3 unchanged.
1069	* @param uIOCtl Function number.
1070	* @param idCpu VMCPU id.
1071	* @param pDevExt Device extention.
1072	* @param pSession Session data.
1073	*/
1074	int VBOXCALL supdrvIOCtlFast(uintptr_t uIOCtl, VMCPUID idCpu, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession)
1075	{
1076	/*
1077	* We check the two prereqs after doing this only to allow the compiler to optimize things better.
1078	*/
1079	if (RT_LIKELY( RT_VALID_PTR(pSession)
1080	&& pSession->pVM
1081	&& pDevExt->pfnVMMR0EntryFast))
1082	{
1083	switch (uIOCtl)
1084	{
1085	case SUP_IOCTL_FAST_DO_RAW_RUN:
1086	pDevExt->pfnVMMR0EntryFast(pSession->pVM, idCpu, SUP_VMMR0_DO_RAW_RUN);
1087	break;
1088	case SUP_IOCTL_FAST_DO_HM_RUN:
1089	pDevExt->pfnVMMR0EntryFast(pSession->pVM, idCpu, SUP_VMMR0_DO_HM_RUN);
1090	break;
1091	case SUP_IOCTL_FAST_DO_NOP:
1092	pDevExt->pfnVMMR0EntryFast(pSession->pVM, idCpu, SUP_VMMR0_DO_NOP);
1093	break;
1094	default:
1095	return VERR_INTERNAL_ERROR;
1096	}
1097	return VINF_SUCCESS;
1098	}
1099	return VERR_INTERNAL_ERROR;
1100	}
1101
1102
1103	/**
1104	* Helper for supdrvIOCtl. Check if pszStr contains any character of pszChars.
1105	* We would use strpbrk here if this function would be contained in the RedHat kABI white
1106	* list, see http://www.kerneldrivers.org/RHEL5.
1107	*
1108	* @returns 1 if pszStr does contain any character of pszChars, 0 otherwise.
1109	* @param pszStr String to check
1110	* @param pszChars Character set
1111	*/
1112	static int supdrvCheckInvalidChar(const char pszStr, const char pszChars)
1113	{
1114	int chCur;
1115	while ((chCur = *pszStr++) != '\0')
1116	{
1117	int ch;
1118	const char *psz = pszChars;
1119	while ((ch = *psz++) != '\0')
1120	if (ch == chCur)
1121	return 1;
1122
1123	}
1124	return 0;
1125	}
1126
1127
1128
1129	/**
1130	* I/O Control inner worker (tracing reasons).
1131	*
1132	* @returns IPRT status code.
1133	* @retval VERR_INVALID_PARAMETER if the request is invalid.
1134	*
1135	* @param uIOCtl Function number.
1136	* @param pDevExt Device extention.
1137	* @param pSession Session data.
1138	* @param pReqHdr The request header.
1139	*/
1140	static int supdrvIOCtlInnerUnrestricted(uintptr_t uIOCtl, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPREQHDR pReqHdr)
1141	{
1142	/*
1143	* Validation macros
1144	*/
1145	#define REQ_CHECK_SIZES_EX(Name, cbInExpect, cbOutExpect) \
1146	do { \
1147	if (RT_UNLIKELY(pReqHdr->cbIn != (cbInExpect) \|\| pReqHdr->cbOut != (cbOutExpect))) \
1148	{ \
1149	OSDBGPRINT(( #Name ": Invalid input/output sizes. cbIn=%ld expected %ld. cbOut=%ld expected %ld.\n", \
1150	(long)pReqHdr->cbIn, (long)(cbInExpect), (long)pReqHdr->cbOut, (long)(cbOutExpect))); \
1151	return pReqHdr->rc = VERR_INVALID_PARAMETER; \
1152	} \
1153	} while (0)
1154
1155	#define REQ_CHECK_SIZES(Name) REQ_CHECK_SIZES_EX(Name, Name ## _SIZE_IN, Name ## _SIZE_OUT)
1156
1157	#define REQ_CHECK_SIZE_IN(Name, cbInExpect) \
1158	do { \
1159	if (RT_UNLIKELY(pReqHdr->cbIn != (cbInExpect))) \
1160	{ \
1161	OSDBGPRINT(( #Name ": Invalid input/output sizes. cbIn=%ld expected %ld.\n", \
1162	(long)pReqHdr->cbIn, (long)(cbInExpect))); \
1163	return pReqHdr->rc = VERR_INVALID_PARAMETER; \
1164	} \
1165	} while (0)
1166
1167	#define REQ_CHECK_SIZE_OUT(Name, cbOutExpect) \
1168	do { \
1169	if (RT_UNLIKELY(pReqHdr->cbOut != (cbOutExpect))) \
1170	{ \
1171	OSDBGPRINT(( #Name ": Invalid input/output sizes. cbOut=%ld expected %ld.\n", \
1172	(long)pReqHdr->cbOut, (long)(cbOutExpect))); \
1173	return pReqHdr->rc = VERR_INVALID_PARAMETER; \
1174	} \
1175	} while (0)
1176
1177	#define REQ_CHECK_EXPR(Name, expr) \
1178	do { \
1179	if (RT_UNLIKELY(!(expr))) \
1180	{ \
1181	OSDBGPRINT(( #Name ": %s\n", #expr)); \
1182	return pReqHdr->rc = VERR_INVALID_PARAMETER; \
1183	} \
1184	} while (0)
1185
1186	#define REQ_CHECK_EXPR_FMT(expr, fmt) \
1187	do { \
1188	if (RT_UNLIKELY(!(expr))) \
1189	{ \
1190	OSDBGPRINT( fmt ); \
1191	return pReqHdr->rc = VERR_INVALID_PARAMETER; \
1192	} \
1193	} while (0)
1194
1195	/*
1196	* The switch.
1197	*/
1198	switch (SUP_CTL_CODE_NO_SIZE(uIOCtl))
1199	{
1200	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_COOKIE):
1201	{
1202	PSUPCOOKIE pReq = (PSUPCOOKIE)pReqHdr;
1203	REQ_CHECK_SIZES(SUP_IOCTL_COOKIE);
1204	if (strncmp(pReq->u.In.szMagic, SUPCOOKIE_MAGIC, sizeof(pReq->u.In.szMagic)))
1205	{
1206	OSDBGPRINT(("SUP_IOCTL_COOKIE: invalid magic %.16s\n", pReq->u.In.szMagic));
1207	pReq->Hdr.rc = VERR_INVALID_MAGIC;
1208	return 0;
1209	}
1210
1211	#if 0
1212	/*
1213	* Call out to the OS specific code and let it do permission checks on the
1214	* client process.
1215	*/
1216	if (!supdrvOSValidateClientProcess(pDevExt, pSession))
1217	{
1218	pReq->u.Out.u32Cookie = 0xffffffff;
1219	pReq->u.Out.u32SessionCookie = 0xffffffff;
1220	pReq->u.Out.u32SessionVersion = 0xffffffff;
1221	pReq->u.Out.u32DriverVersion = SUPDRV_IOC_VERSION;
1222	pReq->u.Out.pSession = NULL;
1223	pReq->u.Out.cFunctions = 0;
1224	pReq->Hdr.rc = VERR_PERMISSION_DENIED;
1225	return 0;
1226	}
1227	#endif
1228
1229	/*
1230	* Match the version.
1231	* The current logic is very simple, match the major interface version.
1232	*/
1233	if ( pReq->u.In.u32MinVersion > SUPDRV_IOC_VERSION
1234	\|\| (pReq->u.In.u32MinVersion & 0xffff0000) != (SUPDRV_IOC_VERSION & 0xffff0000))
1235	{
1236	OSDBGPRINT(("SUP_IOCTL_COOKIE: Version mismatch. Requested: %#x Min: %#x Current: %#x\n",
1237	pReq->u.In.u32ReqVersion, pReq->u.In.u32MinVersion, SUPDRV_IOC_VERSION));
1238	pReq->u.Out.u32Cookie = 0xffffffff;
1239	pReq->u.Out.u32SessionCookie = 0xffffffff;
1240	pReq->u.Out.u32SessionVersion = 0xffffffff;
1241	pReq->u.Out.u32DriverVersion = SUPDRV_IOC_VERSION;
1242	pReq->u.Out.pSession = NULL;
1243	pReq->u.Out.cFunctions = 0;
1244	pReq->Hdr.rc = VERR_VERSION_MISMATCH;
1245	return 0;
1246	}
1247
1248	/*
1249	* Fill in return data and be gone.
1250	* N.B. The first one to change SUPDRV_IOC_VERSION shall makes sure that
1251	* u32SessionVersion <= u32ReqVersion!
1252	*/
1253	/** @todo Somehow validate the client and negotiate a secure cookie... */
1254	pReq->u.Out.u32Cookie = pDevExt->u32Cookie;
1255	pReq->u.Out.u32SessionCookie = pSession->u32Cookie;
1256	pReq->u.Out.u32SessionVersion = SUPDRV_IOC_VERSION;
1257	pReq->u.Out.u32DriverVersion = SUPDRV_IOC_VERSION;
1258	pReq->u.Out.pSession = pSession;
1259	pReq->u.Out.cFunctions = sizeof(g_aFunctions) / sizeof(g_aFunctions[0]);
1260	pReq->Hdr.rc = VINF_SUCCESS;
1261	return 0;
1262	}
1263
1264	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_QUERY_FUNCS(0)):
1265	{
1266	/* validate */
1267	PSUPQUERYFUNCS pReq = (PSUPQUERYFUNCS)pReqHdr;
1268	REQ_CHECK_SIZES_EX(SUP_IOCTL_QUERY_FUNCS, SUP_IOCTL_QUERY_FUNCS_SIZE_IN, SUP_IOCTL_QUERY_FUNCS_SIZE_OUT(RT_ELEMENTS(g_aFunctions)));
1269
1270	/* execute */
1271	pReq->u.Out.cFunctions = RT_ELEMENTS(g_aFunctions);
1272	memcpy(&pReq->u.Out.aFunctions[0], g_aFunctions, sizeof(g_aFunctions));
1273	pReq->Hdr.rc = VINF_SUCCESS;
1274	return 0;
1275	}
1276
1277	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_PAGE_LOCK):
1278	{
1279	/* validate */
1280	PSUPPAGELOCK pReq = (PSUPPAGELOCK)pReqHdr;
1281	REQ_CHECK_SIZE_IN(SUP_IOCTL_PAGE_LOCK, SUP_IOCTL_PAGE_LOCK_SIZE_IN);
1282	REQ_CHECK_SIZE_OUT(SUP_IOCTL_PAGE_LOCK, SUP_IOCTL_PAGE_LOCK_SIZE_OUT(pReq->u.In.cPages));
1283	REQ_CHECK_EXPR(SUP_IOCTL_PAGE_LOCK, pReq->u.In.cPages > 0);
1284	REQ_CHECK_EXPR(SUP_IOCTL_PAGE_LOCK, pReq->u.In.pvR3 >= PAGE_SIZE);
1285
1286	/* execute */
1287	pReq->Hdr.rc = SUPR0LockMem(pSession, pReq->u.In.pvR3, pReq->u.In.cPages, &pReq->u.Out.aPages[0]);
1288	if (RT_FAILURE(pReq->Hdr.rc))
1289	pReq->Hdr.cbOut = sizeof(pReq->Hdr);
1290	return 0;
1291	}
1292
1293	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_PAGE_UNLOCK):
1294	{
1295	/* validate */
1296	PSUPPAGEUNLOCK pReq = (PSUPPAGEUNLOCK)pReqHdr;
1297	REQ_CHECK_SIZES(SUP_IOCTL_PAGE_UNLOCK);
1298
1299	/* execute */
1300	pReq->Hdr.rc = SUPR0UnlockMem(pSession, pReq->u.In.pvR3);
1301	return 0;
1302	}
1303
1304	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_CONT_ALLOC):
1305	{
1306	/* validate */
1307	PSUPCONTALLOC pReq = (PSUPCONTALLOC)pReqHdr;
1308	REQ_CHECK_SIZES(SUP_IOCTL_CONT_ALLOC);
1309
1310	/* execute */
1311	pReq->Hdr.rc = SUPR0ContAlloc(pSession, pReq->u.In.cPages, &pReq->u.Out.pvR0, &pReq->u.Out.pvR3, &pReq->u.Out.HCPhys);
1312	if (RT_FAILURE(pReq->Hdr.rc))
1313	pReq->Hdr.cbOut = sizeof(pReq->Hdr);
1314	return 0;
1315	}
1316
1317	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_CONT_FREE):
1318	{
1319	/* validate */
1320	PSUPCONTFREE pReq = (PSUPCONTFREE)pReqHdr;
1321	REQ_CHECK_SIZES(SUP_IOCTL_CONT_FREE);
1322
1323	/* execute */
1324	pReq->Hdr.rc = SUPR0ContFree(pSession, (RTHCUINTPTR)pReq->u.In.pvR3);
1325	return 0;
1326	}
1327
1328	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LDR_OPEN):
1329	{
1330	/* validate */
1331	PSUPLDROPEN pReq = (PSUPLDROPEN)pReqHdr;
1332	REQ_CHECK_SIZES(SUP_IOCTL_LDR_OPEN);
1333	REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, pReq->u.In.cbImageWithTabs > 0);
1334	REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, pReq->u.In.cbImageWithTabs < 16*_1M);
1335	REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, pReq->u.In.cbImageBits > 0);
1336	REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, pReq->u.In.cbImageBits > 0);
1337	REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, pReq->u.In.cbImageBits < pReq->u.In.cbImageWithTabs);
1338	REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, pReq->u.In.szName[0]);
1339	REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, RTStrEnd(pReq->u.In.szName, sizeof(pReq->u.In.szName)));
1340	REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, !supdrvCheckInvalidChar(pReq->u.In.szName, ";:()[]{}/\\\|&*%#@!~`\"'"));
1341	REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, RTStrEnd(pReq->u.In.szFilename, sizeof(pReq->u.In.szFilename)));
1342
1343	/* execute */
1344	pReq->Hdr.rc = supdrvIOCtl_LdrOpen(pDevExt, pSession, pReq);
1345	return 0;
1346	}
1347
1348	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LDR_LOAD):
1349	{
1350	/* validate */
1351	PSUPLDRLOAD pReq = (PSUPLDRLOAD)pReqHdr;
1352	REQ_CHECK_EXPR(Name, pReq->Hdr.cbIn >= sizeof(*pReq));
1353	REQ_CHECK_SIZES_EX(SUP_IOCTL_LDR_LOAD, SUP_IOCTL_LDR_LOAD_SIZE_IN(pReq->u.In.cbImageWithTabs), SUP_IOCTL_LDR_LOAD_SIZE_OUT);
1354	REQ_CHECK_EXPR(SUP_IOCTL_LDR_LOAD, pReq->u.In.cSymbols <= 16384);
1355	REQ_CHECK_EXPR_FMT( !pReq->u.In.cSymbols
1356	\|\| ( pReq->u.In.offSymbols < pReq->u.In.cbImageWithTabs
1357	&& pReq->u.In.offSymbols + pReq->u.In.cSymbols * sizeof(SUPLDRSYM) <= pReq->u.In.cbImageWithTabs),
1358	("SUP_IOCTL_LDR_LOAD: offSymbols=%#lx cSymbols=%#lx cbImageWithTabs=%#lx\n", (long)pReq->u.In.offSymbols,
1359	(long)pReq->u.In.cSymbols, (long)pReq->u.In.cbImageWithTabs));
1360	REQ_CHECK_EXPR_FMT( !pReq->u.In.cbStrTab
1361	\|\| ( pReq->u.In.offStrTab < pReq->u.In.cbImageWithTabs
1362	&& pReq->u.In.offStrTab + pReq->u.In.cbStrTab <= pReq->u.In.cbImageWithTabs
1363	&& pReq->u.In.cbStrTab <= pReq->u.In.cbImageWithTabs),
1364	("SUP_IOCTL_LDR_LOAD: offStrTab=%#lx cbStrTab=%#lx cbImageWithTabs=%#lx\n", (long)pReq->u.In.offStrTab,
1365	(long)pReq->u.In.cbStrTab, (long)pReq->u.In.cbImageWithTabs));
1366
1367	if (pReq->u.In.cSymbols)
1368	{
1369	uint32_t i;
1370	PSUPLDRSYM paSyms = (PSUPLDRSYM)&pReq->u.In.abImage[pReq->u.In.offSymbols];
1371	for (i = 0; i < pReq->u.In.cSymbols; i++)
1372	{
1373	REQ_CHECK_EXPR_FMT(paSyms[i].offSymbol < pReq->u.In.cbImageWithTabs,
1374	("SUP_IOCTL_LDR_LOAD: sym #%ld: symb off %#lx (max=%#lx)\n", (long)i, (long)paSyms[i].offSymbol, (long)pReq->u.In.cbImageWithTabs));
1375	REQ_CHECK_EXPR_FMT(paSyms[i].offName < pReq->u.In.cbStrTab,
1376	("SUP_IOCTL_LDR_LOAD: sym #%ld: name off %#lx (max=%#lx)\n", (long)i, (long)paSyms[i].offName, (long)pReq->u.In.cbImageWithTabs));
1377	REQ_CHECK_EXPR_FMT(RTStrEnd((char const *)&pReq->u.In.abImage[pReq->u.In.offStrTab + paSyms[i].offName],
1378	pReq->u.In.cbStrTab - paSyms[i].offName),
1379	("SUP_IOCTL_LDR_LOAD: sym #%ld: unterminated name! (%#lx / %#lx)\n", (long)i, (long)paSyms[i].offName, (long)pReq->u.In.cbImageWithTabs));
1380	}
1381	}
1382
1383	/* execute */
1384	pReq->Hdr.rc = supdrvIOCtl_LdrLoad(pDevExt, pSession, pReq);
1385	return 0;
1386	}
1387
1388	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LDR_FREE):
1389	{
1390	/* validate */
1391	PSUPLDRFREE pReq = (PSUPLDRFREE)pReqHdr;
1392	REQ_CHECK_SIZES(SUP_IOCTL_LDR_FREE);
1393
1394	/* execute */
1395	pReq->Hdr.rc = supdrvIOCtl_LdrFree(pDevExt, pSession, pReq);
1396	return 0;
1397	}
1398
1399	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LDR_GET_SYMBOL):
1400	{
1401	/* validate */
1402	PSUPLDRGETSYMBOL pReq = (PSUPLDRGETSYMBOL)pReqHdr;
1403	REQ_CHECK_SIZES(SUP_IOCTL_LDR_GET_SYMBOL);
1404	REQ_CHECK_EXPR(SUP_IOCTL_LDR_GET_SYMBOL, RTStrEnd(pReq->u.In.szSymbol, sizeof(pReq->u.In.szSymbol)));
1405
1406	/* execute */
1407	pReq->Hdr.rc = supdrvIOCtl_LdrGetSymbol(pDevExt, pSession, pReq);
1408	return 0;
1409	}
1410
1411	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_CALL_VMMR0(0)):
1412	{
1413	/* validate */
1414	PSUPCALLVMMR0 pReq = (PSUPCALLVMMR0)pReqHdr;
1415	Log4(("SUP_IOCTL_CALL_VMMR0: op=%u in=%u arg=%RX64 p/t=%RTproc/%RTthrd\n",
1416	pReq->u.In.uOperation, pReq->Hdr.cbIn, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf()));
1417
1418	if (pReq->Hdr.cbIn == SUP_IOCTL_CALL_VMMR0_SIZE(0))
1419	{
1420	REQ_CHECK_SIZES_EX(SUP_IOCTL_CALL_VMMR0, SUP_IOCTL_CALL_VMMR0_SIZE_IN(0), SUP_IOCTL_CALL_VMMR0_SIZE_OUT(0));
1421
1422	/* execute */
1423	if (RT_LIKELY(pDevExt->pfnVMMR0EntryEx))
1424	pReq->Hdr.rc = pDevExt->pfnVMMR0EntryEx(pReq->u.In.pVMR0, pReq->u.In.idCpu, pReq->u.In.uOperation, NULL, pReq->u.In.u64Arg, pSession);
1425	else
1426	pReq->Hdr.rc = VERR_WRONG_ORDER;
1427	}
1428	else
1429	{
1430	PSUPVMMR0REQHDR pVMMReq = (PSUPVMMR0REQHDR)&pReq->abReqPkt[0];
1431	REQ_CHECK_EXPR_FMT(pReq->Hdr.cbIn >= SUP_IOCTL_CALL_VMMR0_SIZE(sizeof(SUPVMMR0REQHDR)),
1432	("SUP_IOCTL_CALL_VMMR0: cbIn=%#x < %#lx\n", pReq->Hdr.cbIn, SUP_IOCTL_CALL_VMMR0_SIZE(sizeof(SUPVMMR0REQHDR))));
1433	REQ_CHECK_EXPR(SUP_IOCTL_CALL_VMMR0, pVMMReq->u32Magic == SUPVMMR0REQHDR_MAGIC);
1434	REQ_CHECK_SIZES_EX(SUP_IOCTL_CALL_VMMR0, SUP_IOCTL_CALL_VMMR0_SIZE_IN(pVMMReq->cbReq), SUP_IOCTL_CALL_VMMR0_SIZE_OUT(pVMMReq->cbReq));
1435
1436	/* execute */
1437	if (RT_LIKELY(pDevExt->pfnVMMR0EntryEx))
1438	pReq->Hdr.rc = pDevExt->pfnVMMR0EntryEx(pReq->u.In.pVMR0, pReq->u.In.idCpu, pReq->u.In.uOperation, pVMMReq, pReq->u.In.u64Arg, pSession);
1439	else
1440	pReq->Hdr.rc = VERR_WRONG_ORDER;
1441	}
1442
1443	if ( RT_FAILURE(pReq->Hdr.rc)
1444	&& pReq->Hdr.rc != VERR_INTERRUPTED
1445	&& pReq->Hdr.rc != VERR_TIMEOUT)
1446	Log(("SUP_IOCTL_CALL_VMMR0: rc=%Rrc op=%u out=%u arg=%RX64 p/t=%RTproc/%RTthrd\n",
1447	pReq->Hdr.rc, pReq->u.In.uOperation, pReq->Hdr.cbOut, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf()));
1448	else
1449	Log4(("SUP_IOCTL_CALL_VMMR0: rc=%Rrc op=%u out=%u arg=%RX64 p/t=%RTproc/%RTthrd\n",
1450	pReq->Hdr.rc, pReq->u.In.uOperation, pReq->Hdr.cbOut, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf()));
1451	return 0;
1452	}
1453
1454	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_CALL_VMMR0_BIG):
1455	{
1456	/* validate */
1457	PSUPCALLVMMR0 pReq = (PSUPCALLVMMR0)pReqHdr;
1458	PSUPVMMR0REQHDR pVMMReq;
1459	Log4(("SUP_IOCTL_CALL_VMMR0_BIG: op=%u in=%u arg=%RX64 p/t=%RTproc/%RTthrd\n",
1460	pReq->u.In.uOperation, pReq->Hdr.cbIn, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf()));
1461
1462	pVMMReq = (PSUPVMMR0REQHDR)&pReq->abReqPkt[0];
1463	REQ_CHECK_EXPR_FMT(pReq->Hdr.cbIn >= SUP_IOCTL_CALL_VMMR0_BIG_SIZE(sizeof(SUPVMMR0REQHDR)),
1464	("SUP_IOCTL_CALL_VMMR0_BIG: cbIn=%#x < %#lx\n", pReq->Hdr.cbIn, SUP_IOCTL_CALL_VMMR0_BIG_SIZE(sizeof(SUPVMMR0REQHDR))));
1465	REQ_CHECK_EXPR(SUP_IOCTL_CALL_VMMR0_BIG, pVMMReq->u32Magic == SUPVMMR0REQHDR_MAGIC);
1466	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));
1467
1468	/* execute */
1469	if (RT_LIKELY(pDevExt->pfnVMMR0EntryEx))
1470	pReq->Hdr.rc = pDevExt->pfnVMMR0EntryEx(pReq->u.In.pVMR0, pReq->u.In.idCpu, pReq->u.In.uOperation, pVMMReq, pReq->u.In.u64Arg, pSession);
1471	else
1472	pReq->Hdr.rc = VERR_WRONG_ORDER;
1473
1474	if ( RT_FAILURE(pReq->Hdr.rc)
1475	&& pReq->Hdr.rc != VERR_INTERRUPTED
1476	&& pReq->Hdr.rc != VERR_TIMEOUT)
1477	Log(("SUP_IOCTL_CALL_VMMR0_BIG: rc=%Rrc op=%u out=%u arg=%RX64 p/t=%RTproc/%RTthrd\n",
1478	pReq->Hdr.rc, pReq->u.In.uOperation, pReq->Hdr.cbOut, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf()));
1479	else
1480	Log4(("SUP_IOCTL_CALL_VMMR0_BIG: rc=%Rrc op=%u out=%u arg=%RX64 p/t=%RTproc/%RTthrd\n",
1481	pReq->Hdr.rc, pReq->u.In.uOperation, pReq->Hdr.cbOut, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf()));
1482	return 0;
1483	}
1484
1485	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_GET_PAGING_MODE):
1486	{
1487	/* validate */
1488	PSUPGETPAGINGMODE pReq = (PSUPGETPAGINGMODE)pReqHdr;
1489	REQ_CHECK_SIZES(SUP_IOCTL_GET_PAGING_MODE);
1490
1491	/* execute */
1492	pReq->Hdr.rc = VINF_SUCCESS;
1493	pReq->u.Out.enmMode = SUPR0GetPagingMode();
1494	return 0;
1495	}
1496
1497	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LOW_ALLOC):
1498	{
1499	/* validate */
1500	PSUPLOWALLOC pReq = (PSUPLOWALLOC)pReqHdr;
1501	REQ_CHECK_EXPR(SUP_IOCTL_LOW_ALLOC, pReq->Hdr.cbIn <= SUP_IOCTL_LOW_ALLOC_SIZE_IN);
1502	REQ_CHECK_SIZES_EX(SUP_IOCTL_LOW_ALLOC, SUP_IOCTL_LOW_ALLOC_SIZE_IN, SUP_IOCTL_LOW_ALLOC_SIZE_OUT(pReq->u.In.cPages));
1503
1504	/* execute */
1505	pReq->Hdr.rc = SUPR0LowAlloc(pSession, pReq->u.In.cPages, &pReq->u.Out.pvR0, &pReq->u.Out.pvR3, &pReq->u.Out.aPages[0]);
1506	if (RT_FAILURE(pReq->Hdr.rc))
1507	pReq->Hdr.cbOut = sizeof(pReq->Hdr);
1508	return 0;
1509	}
1510
1511	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LOW_FREE):
1512	{
1513	/* validate */
1514	PSUPLOWFREE pReq = (PSUPLOWFREE)pReqHdr;
1515	REQ_CHECK_SIZES(SUP_IOCTL_LOW_FREE);
1516
1517	/* execute */
1518	pReq->Hdr.rc = SUPR0LowFree(pSession, (RTHCUINTPTR)pReq->u.In.pvR3);
1519	return 0;
1520	}
1521
1522	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_GIP_MAP):
1523	{
1524	/* validate */
1525	PSUPGIPMAP pReq = (PSUPGIPMAP)pReqHdr;
1526	REQ_CHECK_SIZES(SUP_IOCTL_GIP_MAP);
1527
1528	/* execute */
1529	pReq->Hdr.rc = SUPR0GipMap(pSession, &pReq->u.Out.pGipR3, &pReq->u.Out.HCPhysGip);
1530	if (RT_SUCCESS(pReq->Hdr.rc))
1531	pReq->u.Out.pGipR0 = pDevExt->pGip;
1532	return 0;
1533	}
1534
1535	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_GIP_UNMAP):
1536	{
1537	/* validate */
1538	PSUPGIPUNMAP pReq = (PSUPGIPUNMAP)pReqHdr;
1539	REQ_CHECK_SIZES(SUP_IOCTL_GIP_UNMAP);
1540
1541	/* execute */
1542	pReq->Hdr.rc = SUPR0GipUnmap(pSession);
1543	return 0;
1544	}
1545
1546	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_SET_VM_FOR_FAST):
1547	{
1548	/* validate */
1549	PSUPSETVMFORFAST pReq = (PSUPSETVMFORFAST)pReqHdr;
1550	REQ_CHECK_SIZES(SUP_IOCTL_SET_VM_FOR_FAST);
1551	REQ_CHECK_EXPR_FMT( !pReq->u.In.pVMR0
1552	\|\| ( VALID_PTR(pReq->u.In.pVMR0)
1553	&& !((uintptr_t)pReq->u.In.pVMR0 & (PAGE_SIZE - 1))),
1554	("SUP_IOCTL_SET_VM_FOR_FAST: pVMR0=%p!\n", pReq->u.In.pVMR0));
1555	/* execute */
1556	pSession->pVM = pReq->u.In.pVMR0;
1557	pReq->Hdr.rc = VINF_SUCCESS;
1558	return 0;
1559	}
1560
1561	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_PAGE_ALLOC_EX):
1562	{
1563	/* validate */
1564	PSUPPAGEALLOCEX pReq = (PSUPPAGEALLOCEX)pReqHdr;
1565	REQ_CHECK_EXPR(SUP_IOCTL_PAGE_ALLOC_EX, pReq->Hdr.cbIn <= SUP_IOCTL_PAGE_ALLOC_EX_SIZE_IN);
1566	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));
1567	REQ_CHECK_EXPR_FMT(pReq->u.In.fKernelMapping \|\| pReq->u.In.fUserMapping,
1568	("SUP_IOCTL_PAGE_ALLOC_EX: No mapping requested!\n"));
1569	REQ_CHECK_EXPR_FMT(pReq->u.In.fUserMapping,
1570	("SUP_IOCTL_PAGE_ALLOC_EX: Must have user mapping!\n"));
1571	REQ_CHECK_EXPR_FMT(!pReq->u.In.fReserved0 && !pReq->u.In.fReserved1,
1572	("SUP_IOCTL_PAGE_ALLOC_EX: fReserved0=%d fReserved1=%d\n", pReq->u.In.fReserved0, pReq->u.In.fReserved1));
1573
1574	/* execute */
1575	pReq->Hdr.rc = SUPR0PageAllocEx(pSession, pReq->u.In.cPages, 0 /* fFlags */,
1576	pReq->u.In.fUserMapping ? &pReq->u.Out.pvR3 : NULL,
1577	pReq->u.In.fKernelMapping ? &pReq->u.Out.pvR0 : NULL,
1578	&pReq->u.Out.aPages[0]);
1579	if (RT_FAILURE(pReq->Hdr.rc))
1580	pReq->Hdr.cbOut = sizeof(pReq->Hdr);
1581	return 0;
1582	}
1583
1584	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_PAGE_MAP_KERNEL):
1585	{
1586	/* validate */
1587	PSUPPAGEMAPKERNEL pReq = (PSUPPAGEMAPKERNEL)pReqHdr;
1588	REQ_CHECK_SIZES(SUP_IOCTL_PAGE_MAP_KERNEL);
1589	REQ_CHECK_EXPR_FMT(!pReq->u.In.fFlags, ("SUP_IOCTL_PAGE_MAP_KERNEL: fFlags=%#x! MBZ\n", pReq->u.In.fFlags));
1590	REQ_CHECK_EXPR_FMT(!(pReq->u.In.offSub & PAGE_OFFSET_MASK), ("SUP_IOCTL_PAGE_MAP_KERNEL: offSub=%#x\n", pReq->u.In.offSub));
1591	REQ_CHECK_EXPR_FMT(pReq->u.In.cbSub && !(pReq->u.In.cbSub & PAGE_OFFSET_MASK),
1592	("SUP_IOCTL_PAGE_MAP_KERNEL: cbSub=%#x\n", pReq->u.In.cbSub));
1593
1594	/* execute */
1595	pReq->Hdr.rc = SUPR0PageMapKernel(pSession, pReq->u.In.pvR3, pReq->u.In.offSub, pReq->u.In.cbSub,
1596	pReq->u.In.fFlags, &pReq->u.Out.pvR0);
1597	if (RT_FAILURE(pReq->Hdr.rc))
1598	pReq->Hdr.cbOut = sizeof(pReq->Hdr);
1599	return 0;
1600	}
1601
1602	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_PAGE_PROTECT):
1603	{
1604	/* validate */
1605	PSUPPAGEPROTECT pReq = (PSUPPAGEPROTECT)pReqHdr;
1606	REQ_CHECK_SIZES(SUP_IOCTL_PAGE_PROTECT);
1607	REQ_CHECK_EXPR_FMT(!(pReq->u.In.fProt & ~(RTMEM_PROT_READ \| RTMEM_PROT_WRITE \| RTMEM_PROT_EXEC \| RTMEM_PROT_NONE)),
1608	("SUP_IOCTL_PAGE_PROTECT: fProt=%#x!\n", pReq->u.In.fProt));
1609	REQ_CHECK_EXPR_FMT(!(pReq->u.In.offSub & PAGE_OFFSET_MASK), ("SUP_IOCTL_PAGE_PROTECT: offSub=%#x\n", pReq->u.In.offSub));
1610	REQ_CHECK_EXPR_FMT(pReq->u.In.cbSub && !(pReq->u.In.cbSub & PAGE_OFFSET_MASK),
1611	("SUP_IOCTL_PAGE_PROTECT: cbSub=%#x\n", pReq->u.In.cbSub));
1612
1613	/* execute */
1614	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);
1615	return 0;
1616	}
1617
1618	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_PAGE_FREE):
1619	{
1620	/* validate */
1621	PSUPPAGEFREE pReq = (PSUPPAGEFREE)pReqHdr;
1622	REQ_CHECK_SIZES(SUP_IOCTL_PAGE_FREE);
1623
1624	/* execute */
1625	pReq->Hdr.rc = SUPR0PageFree(pSession, pReq->u.In.pvR3);
1626	return 0;
1627	}
1628
1629	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_CALL_SERVICE(0)):
1630	{
1631	/* validate */
1632	PSUPCALLSERVICE pReq = (PSUPCALLSERVICE)pReqHdr;
1633	Log4(("SUP_IOCTL_CALL_SERVICE: op=%u in=%u arg=%RX64 p/t=%RTproc/%RTthrd\n",
1634	pReq->u.In.uOperation, pReq->Hdr.cbIn, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf()));
1635
1636	if (pReq->Hdr.cbIn == SUP_IOCTL_CALL_SERVICE_SIZE(0))
1637	REQ_CHECK_SIZES_EX(SUP_IOCTL_CALL_SERVICE, SUP_IOCTL_CALL_SERVICE_SIZE_IN(0), SUP_IOCTL_CALL_SERVICE_SIZE_OUT(0));
1638	else
1639	{
1640	PSUPR0SERVICEREQHDR pSrvReq = (PSUPR0SERVICEREQHDR)&pReq->abReqPkt[0];
1641	REQ_CHECK_EXPR_FMT(pReq->Hdr.cbIn >= SUP_IOCTL_CALL_SERVICE_SIZE(sizeof(SUPR0SERVICEREQHDR)),
1642	("SUP_IOCTL_CALL_SERVICE: cbIn=%#x < %#lx\n", pReq->Hdr.cbIn, SUP_IOCTL_CALL_SERVICE_SIZE(sizeof(SUPR0SERVICEREQHDR))));
1643	REQ_CHECK_EXPR(SUP_IOCTL_CALL_SERVICE, pSrvReq->u32Magic == SUPR0SERVICEREQHDR_MAGIC);
1644	REQ_CHECK_SIZES_EX(SUP_IOCTL_CALL_SERVICE, SUP_IOCTL_CALL_SERVICE_SIZE_IN(pSrvReq->cbReq), SUP_IOCTL_CALL_SERVICE_SIZE_OUT(pSrvReq->cbReq));
1645	}
1646	REQ_CHECK_EXPR(SUP_IOCTL_CALL_SERVICE, RTStrEnd(pReq->u.In.szName, sizeof(pReq->u.In.szName)));
1647
1648	/* execute */
1649	pReq->Hdr.rc = supdrvIOCtl_CallServiceModule(pDevExt, pSession, pReq);
1650	return 0;
1651	}
1652
1653	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LOGGER_SETTINGS(0)):
1654	{
1655	/* validate */
1656	PSUPLOGGERSETTINGS pReq = (PSUPLOGGERSETTINGS)pReqHdr;
1657	size_t cbStrTab;
1658	REQ_CHECK_SIZE_OUT(SUP_IOCTL_LOGGER_SETTINGS, SUP_IOCTL_LOGGER_SETTINGS_SIZE_OUT);
1659	REQ_CHECK_EXPR(SUP_IOCTL_LOGGER_SETTINGS, pReq->Hdr.cbIn >= SUP_IOCTL_LOGGER_SETTINGS_SIZE_IN(1));
1660	cbStrTab = pReq->Hdr.cbIn - SUP_IOCTL_LOGGER_SETTINGS_SIZE_IN(0);
1661	REQ_CHECK_EXPR(SUP_IOCTL_LOGGER_SETTINGS, pReq->u.In.offGroups < cbStrTab);
1662	REQ_CHECK_EXPR(SUP_IOCTL_LOGGER_SETTINGS, pReq->u.In.offFlags < cbStrTab);
1663	REQ_CHECK_EXPR(SUP_IOCTL_LOGGER_SETTINGS, pReq->u.In.offDestination < cbStrTab);
1664	REQ_CHECK_EXPR_FMT(pReq->u.In.szStrings[cbStrTab - 1] == '\0',
1665	("SUP_IOCTL_LOGGER_SETTINGS: cbIn=%#x cbStrTab=%#zx LastChar=%d\n",
1666	pReq->Hdr.cbIn, cbStrTab, pReq->u.In.szStrings[cbStrTab - 1]));
1667	REQ_CHECK_EXPR(SUP_IOCTL_LOGGER_SETTINGS, pReq->u.In.fWhich <= SUPLOGGERSETTINGS_WHICH_RELEASE);
1668	REQ_CHECK_EXPR(SUP_IOCTL_LOGGER_SETTINGS, pReq->u.In.fWhat <= SUPLOGGERSETTINGS_WHAT_DESTROY);
1669
1670	/* execute */
1671	pReq->Hdr.rc = supdrvIOCtl_LoggerSettings(pDevExt, pSession, pReq);
1672	return 0;
1673	}
1674
1675	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_SEM_OP2):
1676	{
1677	/* validate */
1678	PSUPSEMOP2 pReq = (PSUPSEMOP2)pReqHdr;
1679	REQ_CHECK_SIZES_EX(SUP_IOCTL_SEM_OP2, SUP_IOCTL_SEM_OP2_SIZE_IN, SUP_IOCTL_SEM_OP2_SIZE_OUT);
1680	REQ_CHECK_EXPR(SUP_IOCTL_SEM_OP2, pReq->u.In.uReserved == 0);
1681
1682	/* execute */
1683	switch (pReq->u.In.uType)
1684	{
1685	case SUP_SEM_TYPE_EVENT:
1686	{
1687	SUPSEMEVENT hEvent = (SUPSEMEVENT)(uintptr_t)pReq->u.In.hSem;
1688	switch (pReq->u.In.uOp)
1689	{
1690	case SUPSEMOP2_WAIT_MS_REL:
1691	pReq->Hdr.rc = SUPSemEventWaitNoResume(pSession, hEvent, pReq->u.In.uArg.cRelMsTimeout);
1692	break;
1693	case SUPSEMOP2_WAIT_NS_ABS:
1694	pReq->Hdr.rc = SUPSemEventWaitNsAbsIntr(pSession, hEvent, pReq->u.In.uArg.uAbsNsTimeout);
1695	break;
1696	case SUPSEMOP2_WAIT_NS_REL:
1697	pReq->Hdr.rc = SUPSemEventWaitNsRelIntr(pSession, hEvent, pReq->u.In.uArg.cRelNsTimeout);
1698	break;
1699	case SUPSEMOP2_SIGNAL:
1700	pReq->Hdr.rc = SUPSemEventSignal(pSession, hEvent);
1701	break;
1702	case SUPSEMOP2_CLOSE:
1703	pReq->Hdr.rc = SUPSemEventClose(pSession, hEvent);
1704	break;
1705	case SUPSEMOP2_RESET:
1706	default:
1707	pReq->Hdr.rc = VERR_INVALID_FUNCTION;
1708	break;
1709	}
1710	break;
1711	}
1712
1713	case SUP_SEM_TYPE_EVENT_MULTI:
1714	{
1715	SUPSEMEVENTMULTI hEventMulti = (SUPSEMEVENTMULTI)(uintptr_t)pReq->u.In.hSem;
1716	switch (pReq->u.In.uOp)
1717	{
1718	case SUPSEMOP2_WAIT_MS_REL:
1719	pReq->Hdr.rc = SUPSemEventMultiWaitNoResume(pSession, hEventMulti, pReq->u.In.uArg.cRelMsTimeout);
1720	break;
1721	case SUPSEMOP2_WAIT_NS_ABS:
1722	pReq->Hdr.rc = SUPSemEventMultiWaitNsAbsIntr(pSession, hEventMulti, pReq->u.In.uArg.uAbsNsTimeout);
1723	break;
1724	case SUPSEMOP2_WAIT_NS_REL:
1725	pReq->Hdr.rc = SUPSemEventMultiWaitNsRelIntr(pSession, hEventMulti, pReq->u.In.uArg.cRelNsTimeout);
1726	break;
1727	case SUPSEMOP2_SIGNAL:
1728	pReq->Hdr.rc = SUPSemEventMultiSignal(pSession, hEventMulti);
1729	break;
1730	case SUPSEMOP2_CLOSE:
1731	pReq->Hdr.rc = SUPSemEventMultiClose(pSession, hEventMulti);
1732	break;
1733	case SUPSEMOP2_RESET:
1734	pReq->Hdr.rc = SUPSemEventMultiReset(pSession, hEventMulti);
1735	break;
1736	default:
1737	pReq->Hdr.rc = VERR_INVALID_FUNCTION;
1738	break;
1739	}
1740	break;
1741	}
1742
1743	default:
1744	pReq->Hdr.rc = VERR_INVALID_PARAMETER;
1745	break;
1746	}
1747	return 0;
1748	}
1749
1750	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_SEM_OP3):
1751	{
1752	/* validate */
1753	PSUPSEMOP3 pReq = (PSUPSEMOP3)pReqHdr;
1754	REQ_CHECK_SIZES_EX(SUP_IOCTL_SEM_OP3, SUP_IOCTL_SEM_OP3_SIZE_IN, SUP_IOCTL_SEM_OP3_SIZE_OUT);
1755	REQ_CHECK_EXPR(SUP_IOCTL_SEM_OP3, pReq->u.In.u32Reserved == 0 && pReq->u.In.u64Reserved == 0);
1756
1757	/* execute */
1758	switch (pReq->u.In.uType)
1759	{
1760	case SUP_SEM_TYPE_EVENT:
1761	{
1762	SUPSEMEVENT hEvent = (SUPSEMEVENT)(uintptr_t)pReq->u.In.hSem;
1763	switch (pReq->u.In.uOp)
1764	{
1765	case SUPSEMOP3_CREATE:
1766	REQ_CHECK_EXPR(SUP_IOCTL_SEM_OP3, hEvent == NIL_SUPSEMEVENT);
1767	pReq->Hdr.rc = SUPSemEventCreate(pSession, &hEvent);
1768	pReq->u.Out.hSem = (uint32_t)(uintptr_t)hEvent;
1769	break;
1770	case SUPSEMOP3_GET_RESOLUTION:
1771	REQ_CHECK_EXPR(SUP_IOCTL_SEM_OP3, hEvent == NIL_SUPSEMEVENT);
1772	pReq->Hdr.rc = VINF_SUCCESS;
1773	pReq->Hdr.cbOut = sizeof(*pReq);
1774	pReq->u.Out.cNsResolution = SUPSemEventGetResolution(pSession);
1775	break;
1776	default:
1777	pReq->Hdr.rc = VERR_INVALID_FUNCTION;
1778	break;
1779	}
1780	break;
1781	}
1782
1783	case SUP_SEM_TYPE_EVENT_MULTI:
1784	{
1785	SUPSEMEVENTMULTI hEventMulti = (SUPSEMEVENTMULTI)(uintptr_t)pReq->u.In.hSem;
1786	switch (pReq->u.In.uOp)
1787	{
1788	case SUPSEMOP3_CREATE:
1789	REQ_CHECK_EXPR(SUP_IOCTL_SEM_OP3, hEventMulti == NIL_SUPSEMEVENTMULTI);
1790	pReq->Hdr.rc = SUPSemEventMultiCreate(pSession, &hEventMulti);
1791	pReq->u.Out.hSem = (uint32_t)(uintptr_t)hEventMulti;
1792	break;
1793	case SUPSEMOP3_GET_RESOLUTION:
1794	REQ_CHECK_EXPR(SUP_IOCTL_SEM_OP3, hEventMulti == NIL_SUPSEMEVENTMULTI);
1795	pReq->Hdr.rc = VINF_SUCCESS;
1796	pReq->u.Out.cNsResolution = SUPSemEventMultiGetResolution(pSession);
1797	break;
1798	default:
1799	pReq->Hdr.rc = VERR_INVALID_FUNCTION;
1800	break;
1801	}
1802	break;
1803	}
1804
1805	default:
1806	pReq->Hdr.rc = VERR_INVALID_PARAMETER;
1807	break;
1808	}
1809	return 0;
1810	}
1811
1812	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_VT_CAPS):
1813	{
1814	/* validate */
1815	PSUPVTCAPS pReq = (PSUPVTCAPS)pReqHdr;
1816	REQ_CHECK_SIZES(SUP_IOCTL_VT_CAPS);
1817
1818	/* execute */
1819	pReq->Hdr.rc = SUPR0QueryVTCaps(pSession, &pReq->u.Out.Caps);
1820	if (RT_FAILURE(pReq->Hdr.rc))
1821	pReq->Hdr.cbOut = sizeof(pReq->Hdr);
1822	return 0;
1823	}
1824
1825	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_TRACER_OPEN):
1826	{
1827	/* validate */
1828	PSUPTRACEROPEN pReq = (PSUPTRACEROPEN)pReqHdr;
1829	REQ_CHECK_SIZES(SUP_IOCTL_TRACER_OPEN);
1830
1831	/* execute */
1832	pReq->Hdr.rc = supdrvIOCtl_TracerOpen(pDevExt, pSession, pReq->u.In.uCookie, pReq->u.In.uArg);
1833	return 0;
1834	}
1835
1836	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_TRACER_CLOSE):
1837	{
1838	/* validate */
1839	REQ_CHECK_SIZES(SUP_IOCTL_TRACER_CLOSE);
1840
1841	/* execute */
1842	pReqHdr->rc = supdrvIOCtl_TracerClose(pDevExt, pSession);
1843	return 0;
1844	}
1845
1846	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_TRACER_IOCTL):
1847	{
1848	/* validate */
1849	PSUPTRACERIOCTL pReq = (PSUPTRACERIOCTL)pReqHdr;
1850	REQ_CHECK_SIZES(SUP_IOCTL_TRACER_IOCTL);
1851
1852	/* execute */
1853	pReqHdr->rc = supdrvIOCtl_TracerIOCtl(pDevExt, pSession, pReq->u.In.uCmd, pReq->u.In.uArg, &pReq->u.Out.iRetVal);
1854	return 0;
1855	}
1856
1857	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_TRACER_UMOD_REG):
1858	{
1859	/* validate */
1860	PSUPTRACERUMODREG pReq = (PSUPTRACERUMODREG)pReqHdr;
1861	REQ_CHECK_SIZES(SUP_IOCTL_TRACER_UMOD_REG);
1862	if (!RTStrEnd(pReq->u.In.szName, sizeof(pReq->u.In.szName)))
1863	return VERR_INVALID_PARAMETER;
1864
1865	/* execute */
1866	pReqHdr->rc = supdrvIOCtl_TracerUmodRegister(pDevExt, pSession,
1867	pReq->u.In.R3PtrVtgHdr, pReq->u.In.uVtgHdrAddr,
1868	pReq->u.In.R3PtrStrTab, pReq->u.In.cbStrTab,
1869	pReq->u.In.szName, pReq->u.In.fFlags);
1870	return 0;
1871	}
1872
1873	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_TRACER_UMOD_DEREG):
1874	{
1875	/* validate */
1876	PSUPTRACERUMODDEREG pReq = (PSUPTRACERUMODDEREG)pReqHdr;
1877	REQ_CHECK_SIZES(SUP_IOCTL_TRACER_UMOD_DEREG);
1878
1879	/* execute */
1880	pReqHdr->rc = supdrvIOCtl_TracerUmodDeregister(pDevExt, pSession, pReq->u.In.pVtgHdr);
1881	return 0;
1882	}
1883
1884	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_TRACER_UMOD_FIRE_PROBE):
1885	{
1886	/* validate */
1887	PSUPTRACERUMODFIREPROBE pReq = (PSUPTRACERUMODFIREPROBE)pReqHdr;
1888	REQ_CHECK_SIZES(SUP_IOCTL_TRACER_UMOD_FIRE_PROBE);
1889
1890	supdrvIOCtl_TracerUmodProbeFire(pDevExt, pSession, &pReq->u.In);
1891	pReqHdr->rc = VINF_SUCCESS;
1892	return 0;
1893	}
1894
1895	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_MSR_PROBER):
1896	{
1897	/* validate */
1898	PSUPMSRPROBER pReq = (PSUPMSRPROBER)pReqHdr;
1899	REQ_CHECK_SIZES(SUP_IOCTL_MSR_PROBER);
1900	REQ_CHECK_EXPR(SUP_IOCTL_MSR_PROBER,
1901	pReq->u.In.enmOp > SUPMSRPROBEROP_INVALID && pReq->u.In.enmOp < SUPMSRPROBEROP_END);
1902
1903	pReqHdr->rc = supdrvIOCtl_MsrProber(pDevExt, pReq);
1904	return 0;
1905	}
1906
1907	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_RESUME_BUILTIN_KBD):
1908	{
1909	/* validate */
1910	REQ_CHECK_SIZES(SUP_IOCTL_RESUME_BUILTIN_KBD);
1911
1912	pReqHdr->rc = supdrvIOCtl_ResumeBuiltinKbd();
1913	return 0;
1914	}
1915
1916	default:
1917	Log(("Unknown IOCTL %#lx\n", (long)uIOCtl));
1918	break;
1919	}
1920	return VERR_GENERAL_FAILURE;
1921	}
1922
1923
1924	/**
1925	* I/O Control inner worker for the restricted operations.
1926	*
1927	* @returns IPRT status code.
1928	* @retval VERR_INVALID_PARAMETER if the request is invalid.
1929	*
1930	* @param uIOCtl Function number.
1931	* @param pDevExt Device extention.
1932	* @param pSession Session data.
1933	* @param pReqHdr The request header.
1934	*/
1935	static int supdrvIOCtlInnerRestricted(uintptr_t uIOCtl, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPREQHDR pReqHdr)
1936	{
1937	/*
1938	* The switch.
1939	*/
1940	switch (SUP_CTL_CODE_NO_SIZE(uIOCtl))
1941	{
1942	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_COOKIE):
1943	{
1944	PSUPCOOKIE pReq = (PSUPCOOKIE)pReqHdr;
1945	REQ_CHECK_SIZES(SUP_IOCTL_COOKIE);
1946	if (strncmp(pReq->u.In.szMagic, SUPCOOKIE_MAGIC, sizeof(pReq->u.In.szMagic)))
1947	{
1948	OSDBGPRINT(("SUP_IOCTL_COOKIE: invalid magic %.16s\n", pReq->u.In.szMagic));
1949	pReq->Hdr.rc = VERR_INVALID_MAGIC;
1950	return 0;
1951	}
1952
1953	/*
1954	* Match the version.
1955	* The current logic is very simple, match the major interface version.
1956	*/
1957	if ( pReq->u.In.u32MinVersion > SUPDRV_IOC_VERSION
1958	\|\| (pReq->u.In.u32MinVersion & 0xffff0000) != (SUPDRV_IOC_VERSION & 0xffff0000))
1959	{
1960	OSDBGPRINT(("SUP_IOCTL_COOKIE: Version mismatch. Requested: %#x Min: %#x Current: %#x\n",
1961	pReq->u.In.u32ReqVersion, pReq->u.In.u32MinVersion, SUPDRV_IOC_VERSION));
1962	pReq->u.Out.u32Cookie = 0xffffffff;
1963	pReq->u.Out.u32SessionCookie = 0xffffffff;
1964	pReq->u.Out.u32SessionVersion = 0xffffffff;
1965	pReq->u.Out.u32DriverVersion = SUPDRV_IOC_VERSION;
1966	pReq->u.Out.pSession = NULL;
1967	pReq->u.Out.cFunctions = 0;
1968	pReq->Hdr.rc = VERR_VERSION_MISMATCH;
1969	return 0;
1970	}
1971
1972	/*
1973	* Fill in return data and be gone.
1974	* N.B. The first one to change SUPDRV_IOC_VERSION shall makes sure that
1975	* u32SessionVersion <= u32ReqVersion!
1976	*/
1977	/** @todo Somehow validate the client and negotiate a secure cookie... */
1978	pReq->u.Out.u32Cookie = pDevExt->u32Cookie;
1979	pReq->u.Out.u32SessionCookie = pSession->u32Cookie;
1980	pReq->u.Out.u32SessionVersion = SUPDRV_IOC_VERSION;
1981	pReq->u.Out.u32DriverVersion = SUPDRV_IOC_VERSION;
1982	pReq->u.Out.pSession = pSession;
1983	pReq->u.Out.cFunctions = 0;
1984	pReq->Hdr.rc = VINF_SUCCESS;
1985	return 0;
1986	}
1987
1988	case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_VT_CAPS):
1989	{
1990	/* validate */
1991	PSUPVTCAPS pReq = (PSUPVTCAPS)pReqHdr;
1992	REQ_CHECK_SIZES(SUP_IOCTL_VT_CAPS);
1993
1994	/* execute */
1995	pReq->Hdr.rc = SUPR0QueryVTCaps(pSession, &pReq->u.Out.Caps);
1996	if (RT_FAILURE(pReq->Hdr.rc))
1997	pReq->Hdr.cbOut = sizeof(pReq->Hdr);
1998	return 0;
1999	}
2000
2001	default:
2002	Log(("Unknown IOCTL %#lx\n", (long)uIOCtl));
2003	break;
2004	}
2005	return VERR_GENERAL_FAILURE;
2006	}
2007
2008
2009	/**
2010	* I/O Control worker.
2011	*
2012	* @returns IPRT status code.
2013	* @retval VERR_INVALID_PARAMETER if the request is invalid.
2014	*
2015	* @param uIOCtl Function number.
2016	* @param pDevExt Device extention.
2017	* @param pSession Session data.
2018	* @param pReqHdr The request header.
2019	*/
2020	int VBOXCALL supdrvIOCtl(uintptr_t uIOCtl, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPREQHDR pReqHdr)
2021	{
2022	int rc;
2023	VBOXDRV_IOCTL_ENTRY(pSession, uIOCtl, pReqHdr);
2024
2025	/*
2026	* Validate the request.
2027	*/
2028	/* this first check could probably be omitted as its also done by the OS specific code... */
2029	if (RT_UNLIKELY( (pReqHdr->fFlags & SUPREQHDR_FLAGS_MAGIC_MASK) != SUPREQHDR_FLAGS_MAGIC
2030	\|\| pReqHdr->cbIn < sizeof(*pReqHdr)
2031	\|\| pReqHdr->cbOut < sizeof(*pReqHdr)))
2032	{
2033	OSDBGPRINT(("vboxdrv: Bad ioctl request header; cbIn=%#lx cbOut=%#lx fFlags=%#lx\n",
2034	(long)pReqHdr->cbIn, (long)pReqHdr->cbOut, (long)pReqHdr->fFlags));
2035	VBOXDRV_IOCTL_RETURN(pSession, uIOCtl, pReqHdr, VERR_INVALID_PARAMETER, VINF_SUCCESS);
2036	return VERR_INVALID_PARAMETER;
2037	}
2038	if (RT_UNLIKELY(!RT_VALID_PTR(pSession)))
2039	{
2040	OSDBGPRINT(("vboxdrv: Invalid pSession valud %p (ioctl=%p)\n", pSession, (void *)uIOCtl));
2041	VBOXDRV_IOCTL_RETURN(pSession, uIOCtl, pReqHdr, VERR_INVALID_PARAMETER, VINF_SUCCESS);
2042	return VERR_INVALID_PARAMETER;
2043	}
2044	if (RT_UNLIKELY(uIOCtl == SUP_IOCTL_COOKIE))
2045	{
2046	if (pReqHdr->u32Cookie != SUPCOOKIE_INITIAL_COOKIE)
2047	{
2048	OSDBGPRINT(("SUP_IOCTL_COOKIE: bad cookie %#lx\n", (long)pReqHdr->u32Cookie));
2049	VBOXDRV_IOCTL_RETURN(pSession, uIOCtl, pReqHdr, VERR_INVALID_PARAMETER, VINF_SUCCESS);
2050	return VERR_INVALID_PARAMETER;
2051	}
2052	}
2053	else if (RT_UNLIKELY( pReqHdr->u32Cookie != pDevExt->u32Cookie
2054	\|\| pReqHdr->u32SessionCookie != pSession->u32Cookie))
2055	{
2056	OSDBGPRINT(("vboxdrv: bad cookie %#lx / %#lx.\n", (long)pReqHdr->u32Cookie, (long)pReqHdr->u32SessionCookie));
2057	VBOXDRV_IOCTL_RETURN(pSession, uIOCtl, pReqHdr, VERR_INVALID_PARAMETER, VINF_SUCCESS);
2058	return VERR_INVALID_PARAMETER;
2059	}
2060
2061	/*
2062	* Hand it to an inner function to avoid lots of unnecessary return tracepoints.
2063	*/
2064	if (pSession->fUnrestricted)
2065	rc = supdrvIOCtlInnerUnrestricted(uIOCtl, pDevExt, pSession, pReqHdr);
2066	else
2067	rc = supdrvIOCtlInnerRestricted(uIOCtl, pDevExt, pSession, pReqHdr);
2068
2069	VBOXDRV_IOCTL_RETURN(pSession, uIOCtl, pReqHdr, pReqHdr->rc, rc);
2070	return rc;
2071	}
2072
2073
2074	/**
2075	* Inter-Driver Communication (IDC) worker.
2076	*
2077	* @returns VBox status code.
2078	* @retval VINF_SUCCESS on success.
2079	* @retval VERR_INVALID_PARAMETER if the request is invalid.
2080	* @retval VERR_NOT_SUPPORTED if the request isn't supported.
2081	*
2082	* @param uReq The request (function) code.
2083	* @param pDevExt Device extention.
2084	* @param pSession Session data.
2085	* @param pReqHdr The request header.
2086	*/
2087	int VBOXCALL supdrvIDC(uintptr_t uReq, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPDRVIDCREQHDR pReqHdr)
2088	{
2089	/*
2090	* The OS specific code has already validated the pSession
2091	* pointer, and the request size being greater or equal to
2092	* size of the header.
2093	*
2094	* So, just check that pSession is a kernel context session.
2095	*/
2096	if (RT_UNLIKELY( pSession
2097	&& pSession->R0Process != NIL_RTR0PROCESS))
2098	return VERR_INVALID_PARAMETER;
2099
2100	/*
2101	* Validation macro.
2102	*/
2103	#define REQ_CHECK_IDC_SIZE(Name, cbExpect) \
2104	do { \
2105	if (RT_UNLIKELY(pReqHdr->cb != (cbExpect))) \
2106	{ \
2107	OSDBGPRINT(( #Name ": Invalid input/output sizes. cb=%ld expected %ld.\n", \
2108	(long)pReqHdr->cb, (long)(cbExpect))); \
2109	return pReqHdr->rc = VERR_INVALID_PARAMETER; \
2110	} \
2111	} while (0)
2112
2113	switch (uReq)
2114	{
2115	case SUPDRV_IDC_REQ_CONNECT:
2116	{
2117	PSUPDRVIDCREQCONNECT pReq = (PSUPDRVIDCREQCONNECT)pReqHdr;
2118	REQ_CHECK_IDC_SIZE(SUPDRV_IDC_REQ_CONNECT, sizeof(*pReq));
2119
2120	/*
2121	* Validate the cookie and other input.
2122	*/
2123	if (pReq->Hdr.pSession != NULL)
2124	{
2125	OSDBGPRINT(("SUPDRV_IDC_REQ_CONNECT: Hdr.pSession=%p expected NULL!\n", pReq->Hdr.pSession));
2126	return pReqHdr->rc = VERR_INVALID_PARAMETER;
2127	}
2128	if (pReq->u.In.u32MagicCookie != SUPDRVIDCREQ_CONNECT_MAGIC_COOKIE)
2129	{
2130	OSDBGPRINT(("SUPDRV_IDC_REQ_CONNECT: u32MagicCookie=%#x expected %#x!\n",
2131	(unsigned)pReq->u.In.u32MagicCookie, (unsigned)SUPDRVIDCREQ_CONNECT_MAGIC_COOKIE));
2132	return pReqHdr->rc = VERR_INVALID_PARAMETER;
2133	}
2134	if ( pReq->u.In.uMinVersion > pReq->u.In.uReqVersion
2135	\|\| (pReq->u.In.uMinVersion & UINT32_C(0xffff0000)) != (pReq->u.In.uReqVersion & UINT32_C(0xffff0000)))
2136	{
2137	OSDBGPRINT(("SUPDRV_IDC_REQ_CONNECT: uMinVersion=%#x uMaxVersion=%#x doesn't match!\n",
2138	pReq->u.In.uMinVersion, pReq->u.In.uReqVersion));
2139	return pReqHdr->rc = VERR_INVALID_PARAMETER;
2140	}
2141	if (pSession != NULL)
2142	{
2143	OSDBGPRINT(("SUPDRV_IDC_REQ_CONNECT: pSession=%p expected NULL!\n", pSession));
2144	return pReqHdr->rc = VERR_INVALID_PARAMETER;
2145	}
2146
2147	/*
2148	* Match the version.
2149	* The current logic is very simple, match the major interface version.
2150	*/
2151	if ( pReq->u.In.uMinVersion > SUPDRV_IDC_VERSION
2152	\|\| (pReq->u.In.uMinVersion & 0xffff0000) != (SUPDRV_IDC_VERSION & 0xffff0000))
2153	{
2154	OSDBGPRINT(("SUPDRV_IDC_REQ_CONNECT: Version mismatch. Requested: %#x Min: %#x Current: %#x\n",
2155	pReq->u.In.uReqVersion, pReq->u.In.uMinVersion, (unsigned)SUPDRV_IDC_VERSION));
2156	pReq->u.Out.pSession = NULL;
2157	pReq->u.Out.uSessionVersion = 0xffffffff;
2158	pReq->u.Out.uDriverVersion = SUPDRV_IDC_VERSION;
2159	pReq->u.Out.uDriverRevision = VBOX_SVN_REV;
2160	pReq->Hdr.rc = VERR_VERSION_MISMATCH;
2161	return VINF_SUCCESS;
2162	}
2163
2164	pReq->u.Out.pSession = NULL;
2165	pReq->u.Out.uSessionVersion = SUPDRV_IDC_VERSION;
2166	pReq->u.Out.uDriverVersion = SUPDRV_IDC_VERSION;
2167	pReq->u.Out.uDriverRevision = VBOX_SVN_REV;
2168
2169	pReq->Hdr.rc = supdrvCreateSession(pDevExt, false /* fUser /, true /fUnrestricted*/, &pSession);
2170	if (RT_FAILURE(pReq->Hdr.rc))
2171	{
2172	OSDBGPRINT(("SUPDRV_IDC_REQ_CONNECT: failed to create session, rc=%d\n", pReq->Hdr.rc));
2173	return VINF_SUCCESS;
2174	}
2175
2176	pReq->u.Out.pSession = pSession;
2177	pReq->Hdr.pSession = pSession;
2178
2179	return VINF_SUCCESS;
2180	}
2181
2182	case SUPDRV_IDC_REQ_DISCONNECT:
2183	{
2184	REQ_CHECK_IDC_SIZE(SUPDRV_IDC_REQ_DISCONNECT, sizeof(*pReqHdr));
2185
2186	supdrvSessionRelease(pSession);
2187	return pReqHdr->rc = VINF_SUCCESS;
2188	}
2189
2190	case SUPDRV_IDC_REQ_GET_SYMBOL:
2191	{
2192	PSUPDRVIDCREQGETSYM pReq = (PSUPDRVIDCREQGETSYM)pReqHdr;
2193	REQ_CHECK_IDC_SIZE(SUPDRV_IDC_REQ_GET_SYMBOL, sizeof(*pReq));
2194
2195	pReq->Hdr.rc = supdrvIDC_LdrGetSymbol(pDevExt, pSession, pReq);
2196	return VINF_SUCCESS;
2197	}
2198
2199	case SUPDRV_IDC_REQ_COMPONENT_REGISTER_FACTORY:
2200	{
2201	PSUPDRVIDCREQCOMPREGFACTORY pReq = (PSUPDRVIDCREQCOMPREGFACTORY)pReqHdr;
2202	REQ_CHECK_IDC_SIZE(SUPDRV_IDC_REQ_COMPONENT_REGISTER_FACTORY, sizeof(*pReq));
2203
2204	pReq->Hdr.rc = SUPR0ComponentRegisterFactory(pSession, pReq->u.In.pFactory);
2205	return VINF_SUCCESS;
2206	}
2207
2208	case SUPDRV_IDC_REQ_COMPONENT_DEREGISTER_FACTORY:
2209	{
2210	PSUPDRVIDCREQCOMPDEREGFACTORY pReq = (PSUPDRVIDCREQCOMPDEREGFACTORY)pReqHdr;
2211	REQ_CHECK_IDC_SIZE(SUPDRV_IDC_REQ_COMPONENT_DEREGISTER_FACTORY, sizeof(*pReq));
2212
2213	pReq->Hdr.rc = SUPR0ComponentDeregisterFactory(pSession, pReq->u.In.pFactory);
2214	return VINF_SUCCESS;
2215	}
2216
2217	default:
2218	Log(("Unknown IDC %#lx\n", (long)uReq));
2219	break;
2220	}
2221
2222	#undef REQ_CHECK_IDC_SIZE
2223	return VERR_NOT_SUPPORTED;
2224	}
2225
2226
2227	/**
2228	* Register a object for reference counting.
2229	* The object is registered with one reference in the specified session.
2230	*
2231	* @returns Unique identifier on success (pointer).
2232	* All future reference must use this identifier.
2233	* @returns NULL on failure.
2234	* @param pfnDestructor The destructore function which will be called when the reference count reaches 0.
2235	* @param pvUser1 The first user argument.
2236	* @param pvUser2 The second user argument.
2237	*/
2238	SUPR0DECL(void ) SUPR0ObjRegister(PSUPDRVSESSION pSession, SUPDRVOBJTYPE enmType, PFNSUPDRVDESTRUCTOR pfnDestructor, void pvUser1, void *pvUser2)
2239	{
2240	PSUPDRVDEVEXT pDevExt = pSession->pDevExt;
2241	PSUPDRVOBJ pObj;
2242	PSUPDRVUSAGE pUsage;
2243
2244	/*
2245	* Validate the input.
2246	*/
2247	AssertReturn(SUP_IS_SESSION_VALID(pSession), NULL);
2248	AssertReturn(enmType > SUPDRVOBJTYPE_INVALID && enmType < SUPDRVOBJTYPE_END, NULL);
2249	AssertPtrReturn(pfnDestructor, NULL);
2250
2251	/*
2252	* Allocate and initialize the object.
2253	*/
2254	pObj = (PSUPDRVOBJ)RTMemAlloc(sizeof(*pObj));
2255	if (!pObj)
2256	return NULL;
2257	pObj->u32Magic = SUPDRVOBJ_MAGIC;
2258	pObj->enmType = enmType;
2259	pObj->pNext = NULL;
2260	pObj->cUsage = 1;
2261	pObj->pfnDestructor = pfnDestructor;
2262	pObj->pvUser1 = pvUser1;
2263	pObj->pvUser2 = pvUser2;
2264	pObj->CreatorUid = pSession->Uid;
2265	pObj->CreatorGid = pSession->Gid;
2266	pObj->CreatorProcess= pSession->Process;
2267	supdrvOSObjInitCreator(pObj, pSession);
2268
2269	/*
2270	* Allocate the usage record.
2271	* (We keep freed usage records around to simplify SUPR0ObjAddRefEx().)
2272	*/
2273	RTSpinlockAcquire(pDevExt->Spinlock);
2274
2275	pUsage = pDevExt->pUsageFree;
2276	if (pUsage)
2277	pDevExt->pUsageFree = pUsage->pNext;
2278	else
2279	{
2280	RTSpinlockRelease(pDevExt->Spinlock);
2281	pUsage = (PSUPDRVUSAGE)RTMemAlloc(sizeof(*pUsage));
2282	if (!pUsage)
2283	{
2284	RTMemFree(pObj);
2285	return NULL;
2286	}
2287	RTSpinlockAcquire(pDevExt->Spinlock);
2288	}
2289
2290	/*
2291	* Insert the object and create the session usage record.
2292	*/
2293	/* The object. */
2294	pObj->pNext = pDevExt->pObjs;
2295	pDevExt->pObjs = pObj;
2296
2297	/* The session record. */
2298	pUsage->cUsage = 1;
2299	pUsage->pObj = pObj;
2300	pUsage->pNext = pSession->pUsage;
2301	/* Log2(("SUPR0ObjRegister: pUsage=%p:{.pObj=%p, .pNext=%p}\n", pUsage, pUsage->pObj, pUsage->pNext)); */
2302	pSession->pUsage = pUsage;
2303
2304	RTSpinlockRelease(pDevExt->Spinlock);
2305
2306	Log(("SUPR0ObjRegister: returns %p (pvUser1=%p, pvUser=%p)\n", pObj, pvUser1, pvUser2));
2307	return pObj;
2308	}
2309
2310
2311	/**
2312	* Increment the reference counter for the object associating the reference
2313	* with the specified session.
2314	*
2315	* @returns IPRT status code.
2316	* @param pvObj The identifier returned by SUPR0ObjRegister().
2317	* @param pSession The session which is referencing the object.
2318	*
2319	* @remarks The caller should not own any spinlocks and must carefully protect
2320	* itself against potential race with the destructor so freed memory
2321	* isn't accessed here.
2322	*/
2323	SUPR0DECL(int) SUPR0ObjAddRef(void *pvObj, PSUPDRVSESSION pSession)
2324	{
2325	return SUPR0ObjAddRefEx(pvObj, pSession, false /* fNoBlocking */);
2326	}
2327
2328
2329	/**
2330	* Increment the reference counter for the object associating the reference
2331	* with the specified session.
2332	*
2333	* @returns IPRT status code.
2334	* @retval VERR_TRY_AGAIN if fNoBlocking was set and a new usage record
2335	* couldn't be allocated. (If you see this you're not doing the right
2336	* thing and it won't ever work reliably.)
2337	*
2338	* @param pvObj The identifier returned by SUPR0ObjRegister().
2339	* @param pSession The session which is referencing the object.
2340	* @param fNoBlocking Set if it's not OK to block. Never try to make the
2341	* first reference to an object in a session with this
2342	* argument set.
2343	*
2344	* @remarks The caller should not own any spinlocks and must carefully protect
2345	* itself against potential race with the destructor so freed memory
2346	* isn't accessed here.
2347	*/
2348	SUPR0DECL(int) SUPR0ObjAddRefEx(void *pvObj, PSUPDRVSESSION pSession, bool fNoBlocking)
2349	{
2350	PSUPDRVDEVEXT pDevExt = pSession->pDevExt;
2351	PSUPDRVOBJ pObj = (PSUPDRVOBJ)pvObj;
2352	int rc = VINF_SUCCESS;
2353	PSUPDRVUSAGE pUsagePre;
2354	PSUPDRVUSAGE pUsage;
2355
2356	/*
2357	* Validate the input.
2358	* Be ready for the destruction race (someone might be stuck in the
2359	* destructor waiting a lock we own).
2360	*/
2361	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2362	AssertPtrReturn(pObj, VERR_INVALID_POINTER);
2363	AssertMsgReturn(pObj->u32Magic == SUPDRVOBJ_MAGIC \|\| pObj->u32Magic == SUPDRVOBJ_MAGIC_DEAD,
2364	("Invalid pvObj=%p magic=%#x (expected %#x or %#x)\n", pvObj, pObj->u32Magic, SUPDRVOBJ_MAGIC, SUPDRVOBJ_MAGIC_DEAD),
2365	VERR_INVALID_PARAMETER);
2366
2367	RTSpinlockAcquire(pDevExt->Spinlock);
2368
2369	if (RT_UNLIKELY(pObj->u32Magic != SUPDRVOBJ_MAGIC))
2370	{
2371	RTSpinlockRelease(pDevExt->Spinlock);
2372
2373	AssertMsgFailed(("pvObj=%p magic=%#x\n", pvObj, pObj->u32Magic));
2374	return VERR_WRONG_ORDER;
2375	}
2376
2377	/*
2378	* Preallocate the usage record if we can.
2379	*/
2380	pUsagePre = pDevExt->pUsageFree;
2381	if (pUsagePre)
2382	pDevExt->pUsageFree = pUsagePre->pNext;
2383	else if (!fNoBlocking)
2384	{
2385	RTSpinlockRelease(pDevExt->Spinlock);
2386	pUsagePre = (PSUPDRVUSAGE)RTMemAlloc(sizeof(*pUsagePre));
2387	if (!pUsagePre)
2388	return VERR_NO_MEMORY;
2389
2390	RTSpinlockAcquire(pDevExt->Spinlock);
2391	if (RT_UNLIKELY(pObj->u32Magic != SUPDRVOBJ_MAGIC))
2392	{
2393	RTSpinlockRelease(pDevExt->Spinlock);
2394
2395	AssertMsgFailed(("pvObj=%p magic=%#x\n", pvObj, pObj->u32Magic));
2396	return VERR_WRONG_ORDER;
2397	}
2398	}
2399
2400	/*
2401	* Reference the object.
2402	*/
2403	pObj->cUsage++;
2404
2405	/*
2406	* Look for the session record.
2407	*/
2408	for (pUsage = pSession->pUsage; pUsage; pUsage = pUsage->pNext)
2409	{
2410	/Log(("SUPR0AddRef: pUsage=%p:{.pObj=%p, .pNext=%p}\n", pUsage, pUsage->pObj, pUsage->pNext));/
2411	if (pUsage->pObj == pObj)
2412	break;
2413	}
2414	if (pUsage)
2415	pUsage->cUsage++;
2416	else if (pUsagePre)
2417	{
2418	/* create a new session record. */
2419	pUsagePre->cUsage = 1;
2420	pUsagePre->pObj = pObj;
2421	pUsagePre->pNext = pSession->pUsage;
2422	pSession->pUsage = pUsagePre;
2423	/Log(("SUPR0AddRef: pUsagePre=%p:{.pObj=%p, .pNext=%p}\n", pUsagePre, pUsagePre->pObj, pUsagePre->pNext));/
2424
2425	pUsagePre = NULL;
2426	}
2427	else
2428	{
2429	pObj->cUsage--;
2430	rc = VERR_TRY_AGAIN;
2431	}
2432
2433	/*
2434	* Put any unused usage record into the free list..
2435	*/
2436	if (pUsagePre)
2437	{
2438	pUsagePre->pNext = pDevExt->pUsageFree;
2439	pDevExt->pUsageFree = pUsagePre;
2440	}
2441
2442	RTSpinlockRelease(pDevExt->Spinlock);
2443
2444	return rc;
2445	}
2446
2447
2448	/**
2449	* Decrement / destroy a reference counter record for an object.
2450	*
2451	* The object is uniquely identified by pfnDestructor+pvUser1+pvUser2.
2452	*
2453	* @returns IPRT status code.
2454	* @retval VINF_SUCCESS if not destroyed.
2455	* @retval VINF_OBJECT_DESTROYED if it's destroyed by this release call.
2456	* @retval VERR_INVALID_PARAMETER if the object isn't valid. Will assert in
2457	* string builds.
2458	*
2459	* @param pvObj The identifier returned by SUPR0ObjRegister().
2460	* @param pSession The session which is referencing the object.
2461	*/
2462	SUPR0DECL(int) SUPR0ObjRelease(void *pvObj, PSUPDRVSESSION pSession)
2463	{
2464	PSUPDRVDEVEXT pDevExt = pSession->pDevExt;
2465	PSUPDRVOBJ pObj = (PSUPDRVOBJ)pvObj;
2466	int rc = VERR_INVALID_PARAMETER;
2467	PSUPDRVUSAGE pUsage;
2468	PSUPDRVUSAGE pUsagePrev;
2469
2470	/*
2471	* Validate the input.
2472	*/
2473	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2474	AssertMsgReturn(VALID_PTR(pObj) && pObj->u32Magic == SUPDRVOBJ_MAGIC,
2475	("Invalid pvObj=%p magic=%#x (exepcted %#x)\n", pvObj, pObj ? pObj->u32Magic : 0, SUPDRVOBJ_MAGIC),
2476	VERR_INVALID_PARAMETER);
2477
2478	/*
2479	* Acquire the spinlock and look for the usage record.
2480	*/
2481	RTSpinlockAcquire(pDevExt->Spinlock);
2482
2483	for (pUsagePrev = NULL, pUsage = pSession->pUsage;
2484	pUsage;
2485	pUsagePrev = pUsage, pUsage = pUsage->pNext)
2486	{
2487	/Log2(("SUPR0ObjRelease: pUsage=%p:{.pObj=%p, .pNext=%p}\n", pUsage, pUsage->pObj, pUsage->pNext));/
2488	if (pUsage->pObj == pObj)
2489	{
2490	rc = VINF_SUCCESS;
2491	AssertMsg(pUsage->cUsage >= 1 && pObj->cUsage >= pUsage->cUsage, ("glob %d; sess %d\n", pObj->cUsage, pUsage->cUsage));
2492	if (pUsage->cUsage > 1)
2493	{
2494	pObj->cUsage--;
2495	pUsage->cUsage--;
2496	}
2497	else
2498	{
2499	/*
2500	* Free the session record.
2501	*/
2502	if (pUsagePrev)
2503	pUsagePrev->pNext = pUsage->pNext;
2504	else
2505	pSession->pUsage = pUsage->pNext;
2506	pUsage->pNext = pDevExt->pUsageFree;
2507	pDevExt->pUsageFree = pUsage;
2508
2509	/* What about the object? */
2510	if (pObj->cUsage > 1)
2511	pObj->cUsage--;
2512	else
2513	{
2514	/*
2515	* Object is to be destroyed, unlink it.
2516	*/
2517	pObj->u32Magic = SUPDRVOBJ_MAGIC_DEAD;
2518	rc = VINF_OBJECT_DESTROYED;
2519	if (pDevExt->pObjs == pObj)
2520	pDevExt->pObjs = pObj->pNext;
2521	else
2522	{
2523	PSUPDRVOBJ pObjPrev;
2524	for (pObjPrev = pDevExt->pObjs; pObjPrev; pObjPrev = pObjPrev->pNext)
2525	if (pObjPrev->pNext == pObj)
2526	{
2527	pObjPrev->pNext = pObj->pNext;
2528	break;
2529	}
2530	Assert(pObjPrev);
2531	}
2532	}
2533	}
2534	break;
2535	}
2536	}
2537
2538	RTSpinlockRelease(pDevExt->Spinlock);
2539
2540	/*
2541	* Call the destructor and free the object if required.
2542	*/
2543	if (rc == VINF_OBJECT_DESTROYED)
2544	{
2545	Log(("SUPR0ObjRelease: destroying %p/%d (%p/%p) cpid=%RTproc pid=%RTproc dtor=%p\n",
2546	pObj, pObj->enmType, pObj->pvUser1, pObj->pvUser2, pObj->CreatorProcess, RTProcSelf(), pObj->pfnDestructor));
2547	if (pObj->pfnDestructor)
2548	pObj->pfnDestructor(pObj, pObj->pvUser1, pObj->pvUser2);
2549	RTMemFree(pObj);
2550	}
2551
2552	AssertMsg(pUsage, ("pvObj=%p\n", pvObj));
2553	return rc;
2554	}
2555
2556
2557	/**
2558	* Verifies that the current process can access the specified object.
2559	*
2560	* @returns The following IPRT status code:
2561	* @retval VINF_SUCCESS if access was granted.
2562	* @retval VERR_PERMISSION_DENIED if denied access.
2563	* @retval VERR_INVALID_PARAMETER if invalid parameter.
2564	*
2565	* @param pvObj The identifier returned by SUPR0ObjRegister().
2566	* @param pSession The session which wishes to access the object.
2567	* @param pszObjName Object string name. This is optional and depends on the object type.
2568	*
2569	* @remark The caller is responsible for making sure the object isn't removed while
2570	* we're inside this function. If uncertain about this, just call AddRef before calling us.
2571	*/
2572	SUPR0DECL(int) SUPR0ObjVerifyAccess(void pvObj, PSUPDRVSESSION pSession, const char pszObjName)
2573	{
2574	PSUPDRVOBJ pObj = (PSUPDRVOBJ)pvObj;
2575	int rc;
2576
2577	/*
2578	* Validate the input.
2579	*/
2580	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2581	AssertMsgReturn(VALID_PTR(pObj) && pObj->u32Magic == SUPDRVOBJ_MAGIC,
2582	("Invalid pvObj=%p magic=%#x (exepcted %#x)\n", pvObj, pObj ? pObj->u32Magic : 0, SUPDRVOBJ_MAGIC),
2583	VERR_INVALID_PARAMETER);
2584
2585	/*
2586	* Check access. (returns true if a decision has been made.)
2587	*/
2588	rc = VERR_INTERNAL_ERROR;
2589	if (supdrvOSObjCanAccess(pObj, pSession, pszObjName, &rc))
2590	return rc;
2591
2592	/*
2593	* Default policy is to allow the user to access his own
2594	* stuff but nothing else.
2595	*/
2596	if (pObj->CreatorUid == pSession->Uid)
2597	return VINF_SUCCESS;
2598	return VERR_PERMISSION_DENIED;
2599	}
2600
2601
2602	/**
2603	* Lock pages.
2604	*
2605	* @returns IPRT status code.
2606	* @param pSession Session to which the locked memory should be associated.
2607	* @param pvR3 Start of the memory range to lock.
2608	* This must be page aligned.
2609	* @param cPages Number of pages to lock.
2610	* @param paPages Where to put the physical addresses of locked memory.
2611	*/
2612	SUPR0DECL(int) SUPR0LockMem(PSUPDRVSESSION pSession, RTR3PTR pvR3, uint32_t cPages, PRTHCPHYS paPages)
2613	{
2614	int rc;
2615	SUPDRVMEMREF Mem = { NIL_RTR0MEMOBJ, NIL_RTR0MEMOBJ, MEMREF_TYPE_UNUSED };
2616	const size_t cb = (size_t)cPages << PAGE_SHIFT;
2617	LogFlow(("SUPR0LockMem: pSession=%p pvR3=%p cPages=%d paPages=%p\n", pSession, (void *)pvR3, cPages, paPages));
2618
2619	/*
2620	* Verify input.
2621	*/
2622	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2623	AssertPtrReturn(paPages, VERR_INVALID_PARAMETER);
2624	if ( RT_ALIGN_R3PT(pvR3, PAGE_SIZE, RTR3PTR) != pvR3
2625	\|\| !pvR3)
2626	{
2627	Log(("pvR3 (%p) must be page aligned and not NULL!\n", (void *)pvR3));
2628	return VERR_INVALID_PARAMETER;
2629	}
2630
2631	/*
2632	* Let IPRT do the job.
2633	*/
2634	Mem.eType = MEMREF_TYPE_LOCKED;
2635	rc = RTR0MemObjLockUser(&Mem.MemObj, pvR3, cb, RTMEM_PROT_READ \| RTMEM_PROT_WRITE, RTR0ProcHandleSelf());
2636	if (RT_SUCCESS(rc))
2637	{
2638	uint32_t iPage = cPages;
2639	AssertMsg(RTR0MemObjAddressR3(Mem.MemObj) == pvR3, ("%p == %p\n", RTR0MemObjAddressR3(Mem.MemObj), pvR3));
2640	AssertMsg(RTR0MemObjSize(Mem.MemObj) == cb, ("%x == %x\n", RTR0MemObjSize(Mem.MemObj), cb));
2641
2642	while (iPage-- > 0)
2643	{
2644	paPages[iPage] = RTR0MemObjGetPagePhysAddr(Mem.MemObj, iPage);
2645	if (RT_UNLIKELY(paPages[iPage] == NIL_RTCCPHYS))
2646	{
2647	AssertMsgFailed(("iPage=%d\n", iPage));
2648	rc = VERR_INTERNAL_ERROR;
2649	break;
2650	}
2651	}
2652	if (RT_SUCCESS(rc))
2653	rc = supdrvMemAdd(&Mem, pSession);
2654	if (RT_FAILURE(rc))
2655	{
2656	int rc2 = RTR0MemObjFree(Mem.MemObj, false);
2657	AssertRC(rc2);
2658	}
2659	}
2660
2661	return rc;
2662	}
2663
2664
2665	/**
2666	* Unlocks the memory pointed to by pv.
2667	*
2668	* @returns IPRT status code.
2669	* @param pSession Session to which the memory was locked.
2670	* @param pvR3 Memory to unlock.
2671	*/
2672	SUPR0DECL(int) SUPR0UnlockMem(PSUPDRVSESSION pSession, RTR3PTR pvR3)
2673	{
2674	LogFlow(("SUPR0UnlockMem: pSession=%p pvR3=%p\n", pSession, (void *)pvR3));
2675	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2676	return supdrvMemRelease(pSession, (RTHCUINTPTR)pvR3, MEMREF_TYPE_LOCKED);
2677	}
2678
2679
2680	/**
2681	* Allocates a chunk of page aligned memory with contiguous and fixed physical
2682	* backing.
2683	*
2684	* @returns IPRT status code.
2685	* @param pSession Session data.
2686	* @param cPages Number of pages to allocate.
2687	* @param ppvR0 Where to put the address of Ring-0 mapping the allocated memory.
2688	* @param ppvR3 Where to put the address of Ring-3 mapping the allocated memory.
2689	* @param pHCPhys Where to put the physical address of allocated memory.
2690	*/
2691	SUPR0DECL(int) SUPR0ContAlloc(PSUPDRVSESSION pSession, uint32_t cPages, PRTR0PTR ppvR0, PRTR3PTR ppvR3, PRTHCPHYS pHCPhys)
2692	{
2693	int rc;
2694	SUPDRVMEMREF Mem = { NIL_RTR0MEMOBJ, NIL_RTR0MEMOBJ, MEMREF_TYPE_UNUSED };
2695	LogFlow(("SUPR0ContAlloc: pSession=%p cPages=%d ppvR0=%p ppvR3=%p pHCPhys=%p\n", pSession, cPages, ppvR0, ppvR3, pHCPhys));
2696
2697	/*
2698	* Validate input.
2699	*/
2700	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2701	if (!ppvR3 \|\| !ppvR0 \|\| !pHCPhys)
2702	{
2703	Log(("Null pointer. All of these should be set: pSession=%p ppvR0=%p ppvR3=%p pHCPhys=%p\n",
2704	pSession, ppvR0, ppvR3, pHCPhys));
2705	return VERR_INVALID_PARAMETER;
2706
2707	}
2708	if (cPages < 1 \|\| cPages >= 256)
2709	{
2710	Log(("Illegal request cPages=%d, must be greater than 0 and smaller than 256.\n", cPages));
2711	return VERR_PAGE_COUNT_OUT_OF_RANGE;
2712	}
2713
2714	/*
2715	* Let IPRT do the job.
2716	*/
2717	rc = RTR0MemObjAllocCont(&Mem.MemObj, cPages << PAGE_SHIFT, true /* executable R0 mapping */);
2718	if (RT_SUCCESS(rc))
2719	{
2720	int rc2;
2721	rc = RTR0MemObjMapUser(&Mem.MapObjR3, Mem.MemObj, (RTR3PTR)-1, 0,
2722	RTMEM_PROT_EXEC \| RTMEM_PROT_WRITE \| RTMEM_PROT_READ, RTR0ProcHandleSelf());
2723	if (RT_SUCCESS(rc))
2724	{
2725	Mem.eType = MEMREF_TYPE_CONT;
2726	rc = supdrvMemAdd(&Mem, pSession);
2727	if (!rc)
2728	{
2729	*ppvR0 = RTR0MemObjAddress(Mem.MemObj);
2730	*ppvR3 = RTR0MemObjAddressR3(Mem.MapObjR3);
2731	*pHCPhys = RTR0MemObjGetPagePhysAddr(Mem.MemObj, 0);
2732	return 0;
2733	}
2734
2735	rc2 = RTR0MemObjFree(Mem.MapObjR3, false);
2736	AssertRC(rc2);
2737	}
2738	rc2 = RTR0MemObjFree(Mem.MemObj, false);
2739	AssertRC(rc2);
2740	}
2741
2742	return rc;
2743	}
2744
2745
2746	/**
2747	* Frees memory allocated using SUPR0ContAlloc().
2748	*
2749	* @returns IPRT status code.
2750	* @param pSession The session to which the memory was allocated.
2751	* @param uPtr Pointer to the memory (ring-3 or ring-0).
2752	*/
2753	SUPR0DECL(int) SUPR0ContFree(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr)
2754	{
2755	LogFlow(("SUPR0ContFree: pSession=%p uPtr=%p\n", pSession, (void *)uPtr));
2756	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2757	return supdrvMemRelease(pSession, uPtr, MEMREF_TYPE_CONT);
2758	}
2759
2760
2761	/**
2762	* Allocates a chunk of page aligned memory with fixed physical backing below 4GB.
2763	*
2764	* The memory isn't zeroed.
2765	*
2766	* @returns IPRT status code.
2767	* @param pSession Session data.
2768	* @param cPages Number of pages to allocate.
2769	* @param ppvR0 Where to put the address of Ring-0 mapping of the allocated memory.
2770	* @param ppvR3 Where to put the address of Ring-3 mapping of the allocated memory.
2771	* @param paPages Where to put the physical addresses of allocated memory.
2772	*/
2773	SUPR0DECL(int) SUPR0LowAlloc(PSUPDRVSESSION pSession, uint32_t cPages, PRTR0PTR ppvR0, PRTR3PTR ppvR3, PRTHCPHYS paPages)
2774	{
2775	unsigned iPage;
2776	int rc;
2777	SUPDRVMEMREF Mem = { NIL_RTR0MEMOBJ, NIL_RTR0MEMOBJ, MEMREF_TYPE_UNUSED };
2778	LogFlow(("SUPR0LowAlloc: pSession=%p cPages=%d ppvR3=%p ppvR0=%p paPages=%p\n", pSession, cPages, ppvR3, ppvR0, paPages));
2779
2780	/*
2781	* Validate input.
2782	*/
2783	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2784	if (!ppvR3 \|\| !ppvR0 \|\| !paPages)
2785	{
2786	Log(("Null pointer. All of these should be set: pSession=%p ppvR3=%p ppvR0=%p paPages=%p\n",
2787	pSession, ppvR3, ppvR0, paPages));
2788	return VERR_INVALID_PARAMETER;
2789
2790	}
2791	if (cPages < 1 \|\| cPages >= 256)
2792	{
2793	Log(("Illegal request cPages=%d, must be greater than 0 and smaller than 256.\n", cPages));
2794	return VERR_PAGE_COUNT_OUT_OF_RANGE;
2795	}
2796
2797	/*
2798	* Let IPRT do the work.
2799	*/
2800	rc = RTR0MemObjAllocLow(&Mem.MemObj, cPages << PAGE_SHIFT, true /* executable ring-0 mapping */);
2801	if (RT_SUCCESS(rc))
2802	{
2803	int rc2;
2804	rc = RTR0MemObjMapUser(&Mem.MapObjR3, Mem.MemObj, (RTR3PTR)-1, 0,
2805	RTMEM_PROT_EXEC \| RTMEM_PROT_WRITE \| RTMEM_PROT_READ, RTR0ProcHandleSelf());
2806	if (RT_SUCCESS(rc))
2807	{
2808	Mem.eType = MEMREF_TYPE_LOW;
2809	rc = supdrvMemAdd(&Mem, pSession);
2810	if (!rc)
2811	{
2812	for (iPage = 0; iPage < cPages; iPage++)
2813	{
2814	paPages[iPage] = RTR0MemObjGetPagePhysAddr(Mem.MemObj, iPage);
2815	AssertMsg(!(paPages[iPage] & (PAGE_SIZE - 1)), ("iPage=%d Phys=%RHp\n", paPages[iPage]));
2816	}
2817	*ppvR0 = RTR0MemObjAddress(Mem.MemObj);
2818	*ppvR3 = RTR0MemObjAddressR3(Mem.MapObjR3);
2819	return 0;
2820	}
2821
2822	rc2 = RTR0MemObjFree(Mem.MapObjR3, false);
2823	AssertRC(rc2);
2824	}
2825
2826	rc2 = RTR0MemObjFree(Mem.MemObj, false);
2827	AssertRC(rc2);
2828	}
2829
2830	return rc;
2831	}
2832
2833
2834	/**
2835	* Frees memory allocated using SUPR0LowAlloc().
2836	*
2837	* @returns IPRT status code.
2838	* @param pSession The session to which the memory was allocated.
2839	* @param uPtr Pointer to the memory (ring-3 or ring-0).
2840	*/
2841	SUPR0DECL(int) SUPR0LowFree(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr)
2842	{
2843	LogFlow(("SUPR0LowFree: pSession=%p uPtr=%p\n", pSession, (void *)uPtr));
2844	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2845	return supdrvMemRelease(pSession, uPtr, MEMREF_TYPE_LOW);
2846	}
2847
2848
2849
2850	/**
2851	* Allocates a chunk of memory with both R0 and R3 mappings.
2852	* The memory is fixed and it's possible to query the physical addresses using SUPR0MemGetPhys().
2853	*
2854	* @returns IPRT status code.
2855	* @param pSession The session to associated the allocation with.
2856	* @param cb Number of bytes to allocate.
2857	* @param ppvR0 Where to store the address of the Ring-0 mapping.
2858	* @param ppvR3 Where to store the address of the Ring-3 mapping.
2859	*/
2860	SUPR0DECL(int) SUPR0MemAlloc(PSUPDRVSESSION pSession, uint32_t cb, PRTR0PTR ppvR0, PRTR3PTR ppvR3)
2861	{
2862	int rc;
2863	SUPDRVMEMREF Mem = { NIL_RTR0MEMOBJ, NIL_RTR0MEMOBJ, MEMREF_TYPE_UNUSED };
2864	LogFlow(("SUPR0MemAlloc: pSession=%p cb=%d ppvR0=%p ppvR3=%p\n", pSession, cb, ppvR0, ppvR3));
2865
2866	/*
2867	* Validate input.
2868	*/
2869	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2870	AssertPtrReturn(ppvR0, VERR_INVALID_POINTER);
2871	AssertPtrReturn(ppvR3, VERR_INVALID_POINTER);
2872	if (cb < 1 \|\| cb >= _4M)
2873	{
2874	Log(("Illegal request cb=%u; must be greater than 0 and smaller than 4MB.\n", cb));
2875	return VERR_INVALID_PARAMETER;
2876	}
2877
2878	/*
2879	* Let IPRT do the work.
2880	*/
2881	rc = RTR0MemObjAllocPage(&Mem.MemObj, cb, true /* executable ring-0 mapping */);
2882	if (RT_SUCCESS(rc))
2883	{
2884	int rc2;
2885	rc = RTR0MemObjMapUser(&Mem.MapObjR3, Mem.MemObj, (RTR3PTR)-1, 0,
2886	RTMEM_PROT_EXEC \| RTMEM_PROT_WRITE \| RTMEM_PROT_READ, RTR0ProcHandleSelf());
2887	if (RT_SUCCESS(rc))
2888	{
2889	Mem.eType = MEMREF_TYPE_MEM;
2890	rc = supdrvMemAdd(&Mem, pSession);
2891	if (!rc)
2892	{
2893	*ppvR0 = RTR0MemObjAddress(Mem.MemObj);
2894	*ppvR3 = RTR0MemObjAddressR3(Mem.MapObjR3);
2895	return VINF_SUCCESS;
2896	}
2897
2898	rc2 = RTR0MemObjFree(Mem.MapObjR3, false);
2899	AssertRC(rc2);
2900	}
2901
2902	rc2 = RTR0MemObjFree(Mem.MemObj, false);
2903	AssertRC(rc2);
2904	}
2905
2906	return rc;
2907	}
2908
2909
2910	/**
2911	* Get the physical addresses of memory allocated using SUPR0MemAlloc().
2912	*
2913	* @returns IPRT status code.
2914	* @param pSession The session to which the memory was allocated.
2915	* @param uPtr The Ring-0 or Ring-3 address returned by SUPR0MemAlloc().
2916	* @param paPages Where to store the physical addresses.
2917	*/
2918	SUPR0DECL(int) SUPR0MemGetPhys(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr, PSUPPAGE paPages) /** @todo switch this bugger to RTHCPHYS */
2919	{
2920	PSUPDRVBUNDLE pBundle;
2921	LogFlow(("SUPR0MemGetPhys: pSession=%p uPtr=%p paPages=%p\n", pSession, (void *)uPtr, paPages));
2922
2923	/*
2924	* Validate input.
2925	*/
2926	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2927	AssertPtrReturn(paPages, VERR_INVALID_POINTER);
2928	AssertReturn(uPtr, VERR_INVALID_PARAMETER);
2929
2930	/*
2931	* Search for the address.
2932	*/
2933	RTSpinlockAcquire(pSession->Spinlock);
2934	for (pBundle = &pSession->Bundle; pBundle; pBundle = pBundle->pNext)
2935	{
2936	if (pBundle->cUsed > 0)
2937	{
2938	unsigned i;
2939	for (i = 0; i < RT_ELEMENTS(pBundle->aMem); i++)
2940	{
2941	if ( pBundle->aMem[i].eType == MEMREF_TYPE_MEM
2942	&& pBundle->aMem[i].MemObj != NIL_RTR0MEMOBJ
2943	&& ( (RTHCUINTPTR)RTR0MemObjAddress(pBundle->aMem[i].MemObj) == uPtr
2944	\|\| ( pBundle->aMem[i].MapObjR3 != NIL_RTR0MEMOBJ
2945	&& RTR0MemObjAddressR3(pBundle->aMem[i].MapObjR3) == uPtr)
2946	)
2947	)
2948	{
2949	const size_t cPages = RTR0MemObjSize(pBundle->aMem[i].MemObj) >> PAGE_SHIFT;
2950	size_t iPage;
2951	for (iPage = 0; iPage < cPages; iPage++)
2952	{
2953	paPages[iPage].Phys = RTR0MemObjGetPagePhysAddr(pBundle->aMem[i].MemObj, iPage);
2954	paPages[iPage].uReserved = 0;
2955	}
2956	RTSpinlockRelease(pSession->Spinlock);
2957	return VINF_SUCCESS;
2958	}
2959	}
2960	}
2961	}
2962	RTSpinlockRelease(pSession->Spinlock);
2963	Log(("Failed to find %p!!!\n", (void *)uPtr));
2964	return VERR_INVALID_PARAMETER;
2965	}
2966
2967
2968	/**
2969	* Free memory allocated by SUPR0MemAlloc().
2970	*
2971	* @returns IPRT status code.
2972	* @param pSession The session owning the allocation.
2973	* @param uPtr The Ring-0 or Ring-3 address returned by SUPR0MemAlloc().
2974	*/
2975	SUPR0DECL(int) SUPR0MemFree(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr)
2976	{
2977	LogFlow(("SUPR0MemFree: pSession=%p uPtr=%p\n", pSession, (void *)uPtr));
2978	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
2979	return supdrvMemRelease(pSession, uPtr, MEMREF_TYPE_MEM);
2980	}
2981
2982
2983	/**
2984	* Allocates a chunk of memory with a kernel or/and a user mode mapping.
2985	*
2986	* The memory is fixed and it's possible to query the physical addresses using
2987	* SUPR0MemGetPhys().
2988	*
2989	* @returns IPRT status code.
2990	* @param pSession The session to associated the allocation with.
2991	* @param cPages The number of pages to allocate.
2992	* @param fFlags Flags, reserved for the future. Must be zero.
2993	* @param ppvR3 Where to store the address of the Ring-3 mapping.
2994	* NULL if no ring-3 mapping.
2995	* @param ppvR3 Where to store the address of the Ring-0 mapping.
2996	* NULL if no ring-0 mapping.
2997	* @param paPages Where to store the addresses of the pages. Optional.
2998	*/
2999	SUPR0DECL(int) SUPR0PageAllocEx(PSUPDRVSESSION pSession, uint32_t cPages, uint32_t fFlags, PRTR3PTR ppvR3, PRTR0PTR ppvR0, PRTHCPHYS paPages)
3000	{
3001	int rc;
3002	SUPDRVMEMREF Mem = { NIL_RTR0MEMOBJ, NIL_RTR0MEMOBJ, MEMREF_TYPE_UNUSED };
3003	LogFlow(("SUPR0PageAlloc: pSession=%p cb=%d ppvR3=%p\n", pSession, cPages, ppvR3));
3004
3005	/*
3006	* Validate input. The allowed allocation size must be at least equal to the maximum guest VRAM size.
3007	*/
3008	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
3009	AssertPtrNullReturn(ppvR3, VERR_INVALID_POINTER);
3010	AssertPtrNullReturn(ppvR0, VERR_INVALID_POINTER);
3011	AssertReturn(ppvR3 \|\| ppvR0, VERR_INVALID_PARAMETER);
3012	AssertReturn(!fFlags, VERR_INVALID_PARAMETER);
3013	if (cPages < 1 \|\| cPages > VBOX_MAX_ALLOC_PAGE_COUNT)
3014	{
3015	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)));
3016	return VERR_PAGE_COUNT_OUT_OF_RANGE;
3017	}
3018
3019	/*
3020	* Let IPRT do the work.
3021	*/
3022	if (ppvR0)
3023	rc = RTR0MemObjAllocPage(&Mem.MemObj, (size_t)cPages * PAGE_SIZE, true /* fExecutable */);
3024	else
3025	rc = RTR0MemObjAllocPhysNC(&Mem.MemObj, (size_t)cPages * PAGE_SIZE, NIL_RTHCPHYS);
3026	if (RT_SUCCESS(rc))
3027	{
3028	int rc2;
3029	if (ppvR3)
3030	rc = RTR0MemObjMapUser(&Mem.MapObjR3, Mem.MemObj, (RTR3PTR)-1, 0,
3031	RTMEM_PROT_EXEC \| RTMEM_PROT_WRITE \| RTMEM_PROT_READ, RTR0ProcHandleSelf());
3032	else
3033	Mem.MapObjR3 = NIL_RTR0MEMOBJ;
3034	if (RT_SUCCESS(rc))
3035	{
3036	Mem.eType = MEMREF_TYPE_PAGE;
3037	rc = supdrvMemAdd(&Mem, pSession);
3038	if (!rc)
3039	{
3040	if (ppvR3)
3041	*ppvR3 = RTR0MemObjAddressR3(Mem.MapObjR3);
3042	if (ppvR0)
3043	*ppvR0 = RTR0MemObjAddress(Mem.MemObj);
3044	if (paPages)
3045	{
3046	uint32_t iPage = cPages;
3047	while (iPage-- > 0)
3048	{
3049	paPages[iPage] = RTR0MemObjGetPagePhysAddr(Mem.MapObjR3, iPage);
3050	Assert(paPages[iPage] != NIL_RTHCPHYS);
3051	}
3052	}
3053	return VINF_SUCCESS;
3054	}
3055
3056	rc2 = RTR0MemObjFree(Mem.MapObjR3, false);
3057	AssertRC(rc2);
3058	}
3059
3060	rc2 = RTR0MemObjFree(Mem.MemObj, false);
3061	AssertRC(rc2);
3062	}
3063	return rc;
3064	}
3065
3066
3067	/**
3068	* Maps a chunk of memory previously allocated by SUPR0PageAllocEx into kernel
3069	* space.
3070	*
3071	* @returns IPRT status code.
3072	* @param pSession The session to associated the allocation with.
3073	* @param pvR3 The ring-3 address returned by SUPR0PageAllocEx.
3074	* @param offSub Where to start mapping. Must be page aligned.
3075	* @param cbSub How much to map. Must be page aligned.
3076	* @param fFlags Flags, MBZ.
3077	* @param ppvR0 Where to return the address of the ring-0 mapping on
3078	* success.
3079	*/
3080	SUPR0DECL(int) SUPR0PageMapKernel(PSUPDRVSESSION pSession, RTR3PTR pvR3, uint32_t offSub, uint32_t cbSub,
3081	uint32_t fFlags, PRTR0PTR ppvR0)
3082	{
3083	int rc;
3084	PSUPDRVBUNDLE pBundle;
3085	RTR0MEMOBJ hMemObj = NIL_RTR0MEMOBJ;
3086	LogFlow(("SUPR0PageMapKernel: pSession=%p pvR3=%p offSub=%#x cbSub=%#x\n", pSession, pvR3, offSub, cbSub));
3087
3088	/*
3089	* Validate input. The allowed allocation size must be at least equal to the maximum guest VRAM size.
3090	*/
3091	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
3092	AssertPtrNullReturn(ppvR0, VERR_INVALID_POINTER);
3093	AssertReturn(!fFlags, VERR_INVALID_PARAMETER);
3094	AssertReturn(!(offSub & PAGE_OFFSET_MASK), VERR_INVALID_PARAMETER);
3095	AssertReturn(!(cbSub & PAGE_OFFSET_MASK), VERR_INVALID_PARAMETER);
3096	AssertReturn(cbSub, VERR_INVALID_PARAMETER);
3097
3098	/*
3099	* Find the memory object.
3100	*/
3101	RTSpinlockAcquire(pSession->Spinlock);
3102	for (pBundle = &pSession->Bundle; pBundle; pBundle = pBundle->pNext)
3103	{
3104	if (pBundle->cUsed > 0)
3105	{
3106	unsigned i;
3107	for (i = 0; i < RT_ELEMENTS(pBundle->aMem); i++)
3108	{
3109	if ( ( pBundle->aMem[i].eType == MEMREF_TYPE_PAGE
3110	&& pBundle->aMem[i].MemObj != NIL_RTR0MEMOBJ
3111	&& pBundle->aMem[i].MapObjR3 != NIL_RTR0MEMOBJ
3112	&& RTR0MemObjAddressR3(pBundle->aMem[i].MapObjR3) == pvR3)
3113	\|\| ( pBundle->aMem[i].eType == MEMREF_TYPE_LOCKED
3114	&& pBundle->aMem[i].MemObj != NIL_RTR0MEMOBJ
3115	&& pBundle->aMem[i].MapObjR3 == NIL_RTR0MEMOBJ
3116	&& RTR0MemObjAddressR3(pBundle->aMem[i].MemObj) == pvR3))
3117	{
3118	hMemObj = pBundle->aMem[i].MemObj;
3119	break;
3120	}
3121	}
3122	}
3123	}
3124	RTSpinlockRelease(pSession->Spinlock);
3125
3126	rc = VERR_INVALID_PARAMETER;
3127	if (hMemObj != NIL_RTR0MEMOBJ)
3128	{
3129	/*
3130	* Do some further input validations before calling IPRT.
3131	* (Cleanup is done indirectly by telling RTR0MemObjFree to include mappings.)
3132	*/
3133	size_t cbMemObj = RTR0MemObjSize(hMemObj);
3134	if ( offSub < cbMemObj
3135	&& cbSub <= cbMemObj
3136	&& offSub + cbSub <= cbMemObj)
3137	{
3138	RTR0MEMOBJ hMapObj;
3139	rc = RTR0MemObjMapKernelEx(&hMapObj, hMemObj, (void *)-1, 0,
3140	RTMEM_PROT_READ \| RTMEM_PROT_WRITE, offSub, cbSub);
3141	if (RT_SUCCESS(rc))
3142	*ppvR0 = RTR0MemObjAddress(hMapObj);
3143	}
3144	else
3145	SUPR0Printf("SUPR0PageMapKernel: cbMemObj=%#x offSub=%#x cbSub=%#x\n", cbMemObj, offSub, cbSub);
3146
3147	}
3148	return rc;
3149	}
3150
3151
3152	/**
3153	* Changes the page level protection of one or more pages previously allocated
3154	* by SUPR0PageAllocEx.
3155	*
3156	* @returns IPRT status code.
3157	* @param pSession The session to associated the allocation with.
3158	* @param pvR3 The ring-3 address returned by SUPR0PageAllocEx.
3159	* NIL_RTR3PTR if the ring-3 mapping should be unaffected.
3160	* @param pvR0 The ring-0 address returned by SUPR0PageAllocEx.
3161	* NIL_RTR0PTR if the ring-0 mapping should be unaffected.
3162	* @param offSub Where to start changing. Must be page aligned.
3163	* @param cbSub How much to change. Must be page aligned.
3164	* @param fProt The new page level protection, see RTMEM_PROT_*.
3165	*/
3166	SUPR0DECL(int) SUPR0PageProtect(PSUPDRVSESSION pSession, RTR3PTR pvR3, RTR0PTR pvR0, uint32_t offSub, uint32_t cbSub, uint32_t fProt)
3167	{
3168	int rc;
3169	PSUPDRVBUNDLE pBundle;
3170	RTR0MEMOBJ hMemObjR0 = NIL_RTR0MEMOBJ;
3171	RTR0MEMOBJ hMemObjR3 = NIL_RTR0MEMOBJ;
3172	LogFlow(("SUPR0PageProtect: pSession=%p pvR3=%p pvR0=%p offSub=%#x cbSub=%#x fProt-%#x\n", pSession, pvR3, pvR0, offSub, cbSub, fProt));
3173
3174	/*
3175	* Validate input. The allowed allocation size must be at least equal to the maximum guest VRAM size.
3176	*/
3177	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
3178	AssertReturn(!(fProt & ~(RTMEM_PROT_READ \| RTMEM_PROT_WRITE \| RTMEM_PROT_EXEC \| RTMEM_PROT_NONE)), VERR_INVALID_PARAMETER);
3179	AssertReturn(!(offSub & PAGE_OFFSET_MASK), VERR_INVALID_PARAMETER);
3180	AssertReturn(!(cbSub & PAGE_OFFSET_MASK), VERR_INVALID_PARAMETER);
3181	AssertReturn(cbSub, VERR_INVALID_PARAMETER);
3182
3183	/*
3184	* Find the memory object.
3185	*/
3186	RTSpinlockAcquire(pSession->Spinlock);
3187	for (pBundle = &pSession->Bundle; pBundle; pBundle = pBundle->pNext)
3188	{
3189	if (pBundle->cUsed > 0)
3190	{
3191	unsigned i;
3192	for (i = 0; i < RT_ELEMENTS(pBundle->aMem); i++)
3193	{
3194	if ( pBundle->aMem[i].eType == MEMREF_TYPE_PAGE
3195	&& pBundle->aMem[i].MemObj != NIL_RTR0MEMOBJ
3196	&& ( pBundle->aMem[i].MapObjR3 != NIL_RTR0MEMOBJ
3197	\|\| pvR3 == NIL_RTR3PTR)
3198	&& ( pvR0 == NIL_RTR0PTR
3199	\|\| RTR0MemObjAddress(pBundle->aMem[i].MemObj) == pvR0)
3200	&& ( pvR3 == NIL_RTR3PTR
3201	\|\| RTR0MemObjAddressR3(pBundle->aMem[i].MapObjR3) == pvR3))
3202	{
3203	if (pvR0 != NIL_RTR0PTR)
3204	hMemObjR0 = pBundle->aMem[i].MemObj;
3205	if (pvR3 != NIL_RTR3PTR)
3206	hMemObjR3 = pBundle->aMem[i].MapObjR3;
3207	break;
3208	}
3209	}
3210	}
3211	}
3212	RTSpinlockRelease(pSession->Spinlock);
3213
3214	rc = VERR_INVALID_PARAMETER;
3215	if ( hMemObjR0 != NIL_RTR0MEMOBJ
3216	\|\| hMemObjR3 != NIL_RTR0MEMOBJ)
3217	{
3218	/*
3219	* Do some further input validations before calling IPRT.
3220	*/
3221	size_t cbMemObj = hMemObjR0 != NIL_RTR0PTR ? RTR0MemObjSize(hMemObjR0) : RTR0MemObjSize(hMemObjR3);
3222	if ( offSub < cbMemObj
3223	&& cbSub <= cbMemObj
3224	&& offSub + cbSub <= cbMemObj)
3225	{
3226	rc = VINF_SUCCESS;
3227	if (hMemObjR3 != NIL_RTR0PTR)
3228	rc = RTR0MemObjProtect(hMemObjR3, offSub, cbSub, fProt);
3229	if (hMemObjR0 != NIL_RTR0PTR && RT_SUCCESS(rc))
3230	rc = RTR0MemObjProtect(hMemObjR0, offSub, cbSub, fProt);
3231	}
3232	else
3233	SUPR0Printf("SUPR0PageMapKernel: cbMemObj=%#x offSub=%#x cbSub=%#x\n", cbMemObj, offSub, cbSub);
3234
3235	}
3236	return rc;
3237
3238	}
3239
3240
3241	/**
3242	* Free memory allocated by SUPR0PageAlloc() and SUPR0PageAllocEx().
3243	*
3244	* @returns IPRT status code.
3245	* @param pSession The session owning the allocation.
3246	* @param pvR3 The Ring-3 address returned by SUPR0PageAlloc() or
3247	* SUPR0PageAllocEx().
3248	*/
3249	SUPR0DECL(int) SUPR0PageFree(PSUPDRVSESSION pSession, RTR3PTR pvR3)
3250	{
3251	LogFlow(("SUPR0PageFree: pSession=%p pvR3=%p\n", pSession, (void *)pvR3));
3252	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
3253	return supdrvMemRelease(pSession, (RTHCUINTPTR)pvR3, MEMREF_TYPE_PAGE);
3254	}
3255
3256
3257	/**
3258	* Gets the paging mode of the current CPU.
3259	*
3260	* @returns Paging mode, SUPPAGEINGMODE_INVALID on error.
3261	*/
3262	SUPR0DECL(SUPPAGINGMODE) SUPR0GetPagingMode(void)
3263	{
3264	SUPPAGINGMODE enmMode;
3265
3266	RTR0UINTREG cr0 = ASMGetCR0();
3267	if ((cr0 & (X86_CR0_PG \| X86_CR0_PE)) != (X86_CR0_PG \| X86_CR0_PE))
3268	enmMode = SUPPAGINGMODE_INVALID;
3269	else
3270	{
3271	RTR0UINTREG cr4 = ASMGetCR4();
3272	uint32_t fNXEPlusLMA = 0;
3273	if (cr4 & X86_CR4_PAE)
3274	{
3275	uint32_t fExtFeatures = ASMCpuId_EDX(0x80000001);
3276	if (fExtFeatures & (X86_CPUID_EXT_FEATURE_EDX_NX \| X86_CPUID_EXT_FEATURE_EDX_LONG_MODE))
3277	{
3278	uint64_t efer = ASMRdMsr(MSR_K6_EFER);
3279	if ((fExtFeatures & X86_CPUID_EXT_FEATURE_EDX_NX) && (efer & MSR_K6_EFER_NXE))
3280	fNXEPlusLMA \|= RT_BIT(0);
3281	if ((fExtFeatures & X86_CPUID_EXT_FEATURE_EDX_LONG_MODE) && (efer & MSR_K6_EFER_LMA))
3282	fNXEPlusLMA \|= RT_BIT(1);
3283	}
3284	}
3285
3286	switch ((cr4 & (X86_CR4_PAE \| X86_CR4_PGE)) \| fNXEPlusLMA)
3287	{
3288	case 0:
3289	enmMode = SUPPAGINGMODE_32_BIT;
3290	break;
3291
3292	case X86_CR4_PGE:
3293	enmMode = SUPPAGINGMODE_32_BIT_GLOBAL;
3294	break;
3295
3296	case X86_CR4_PAE:
3297	enmMode = SUPPAGINGMODE_PAE;
3298	break;
3299
3300	case X86_CR4_PAE \| RT_BIT(0):
3301	enmMode = SUPPAGINGMODE_PAE_NX;
3302	break;
3303
3304	case X86_CR4_PAE \| X86_CR4_PGE:
3305	enmMode = SUPPAGINGMODE_PAE_GLOBAL;
3306	break;
3307
3308	case X86_CR4_PAE \| X86_CR4_PGE \| RT_BIT(0):
3309	enmMode = SUPPAGINGMODE_PAE_GLOBAL;
3310	break;
3311
3312	case RT_BIT(1) \| X86_CR4_PAE:
3313	enmMode = SUPPAGINGMODE_AMD64;
3314	break;
3315
3316	case RT_BIT(1) \| X86_CR4_PAE \| RT_BIT(0):
3317	enmMode = SUPPAGINGMODE_AMD64_NX;
3318	break;
3319
3320	case RT_BIT(1) \| X86_CR4_PAE \| X86_CR4_PGE:
3321	enmMode = SUPPAGINGMODE_AMD64_GLOBAL;
3322	break;
3323
3324	case RT_BIT(1) \| X86_CR4_PAE \| X86_CR4_PGE \| RT_BIT(0):
3325	enmMode = SUPPAGINGMODE_AMD64_GLOBAL_NX;
3326	break;
3327
3328	default:
3329	AssertMsgFailed(("Cannot happen! cr4=%#x fNXEPlusLMA=%d\n", cr4, fNXEPlusLMA));
3330	enmMode = SUPPAGINGMODE_INVALID;
3331	break;
3332	}
3333	}
3334	return enmMode;
3335	}
3336
3337
3338	/**
3339	* Enables or disabled hardware virtualization extensions using native OS APIs.
3340	*
3341	* @returns VBox status code.
3342	* @retval VINF_SUCCESS on success.
3343	* @retval VERR_NOT_SUPPORTED if not supported by the native OS.
3344	*
3345	* @param fEnable Whether to enable or disable.
3346	*/
3347	SUPR0DECL(int) SUPR0EnableVTx(bool fEnable)
3348	{
3349	#ifdef RT_OS_DARWIN
3350	return supdrvOSEnableVTx(fEnable);
3351	#else
3352	return VERR_NOT_SUPPORTED;
3353	#endif
3354	}
3355
3356
3357	/**
3358	* Suspends hardware virtualization extensions using the native OS API.
3359	*
3360	* This is called prior to entering raw-mode context.
3361	*
3362	* @returns @c true if suspended, @c false if not.
3363	*/
3364	SUPR0DECL(bool) SUPR0SuspendVTxOnCpu(void)
3365	{
3366	#ifdef RT_OS_DARWIN
3367	return supdrvOSSuspendVTxOnCpu();
3368	#else
3369	return false;
3370	#endif
3371	}
3372
3373
3374	/**
3375	* Resumes hardware virtualization extensions using the native OS API.
3376	*
3377	* This is called after to entering raw-mode context.
3378	*
3379	* @param fSuspended The return value of SUPR0SuspendVTxOnCpu.
3380	*/
3381	SUPR0DECL(void) SUPR0ResumeVTxOnCpu(bool fSuspended)
3382	{
3383	#ifdef RT_OS_DARWIN
3384	supdrvOSResumeVTxOnCpu(fSuspended);
3385	#else
3386	Assert(!fSuspended);
3387	#endif
3388	}
3389
3390
3391	/**
3392	* Queries the AMD-V and VT-x capabilities of the calling CPU.
3393	*
3394	* @returns VBox status code.
3395	* @retval VERR_VMX_NO_VMX
3396	* @retval VERR_VMX_MSR_SMX_VMXON_DISABLED
3397	* @retval VERR_VMX_MSR_VMXON_DISABLED
3398	* @retval VERR_VMX_MSR_LOCKING_FAILED
3399	* @retval VERR_SVM_NO_SVM
3400	* @retval VERR_SVM_DISABLED
3401	* @retval VERR_UNSUPPORTED_CPU if not identifiable as an AMD, Intel or VIA
3402	* (centaur) CPU.
3403	*
3404	* @param pSession The session handle.
3405	* @param pfCaps Where to store the capabilities.
3406	*/
3407	SUPR0DECL(int) SUPR0QueryVTCaps(PSUPDRVSESSION pSession, uint32_t *pfCaps)
3408	{
3409	int rc = VERR_UNSUPPORTED_CPU;
3410	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
3411
3412	/*
3413	* Input validation.
3414	*/
3415	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
3416	AssertPtrReturn(pfCaps, VERR_INVALID_POINTER);
3417
3418	*pfCaps = 0;
3419	/* We may modify MSRs and re-read them, disable preemption so we make sure we don't migrate CPUs. */
3420	RTThreadPreemptDisable(&PreemptState);
3421	if (ASMHasCpuId())
3422	{
3423	uint32_t fFeaturesECX, fFeaturesEDX, uDummy;
3424	uint32_t uMaxId, uVendorEBX, uVendorECX, uVendorEDX;
3425
3426	ASMCpuId(0, &uMaxId, &uVendorEBX, &uVendorECX, &uVendorEDX);
3427	ASMCpuId(1, &uDummy, &uDummy, &fFeaturesECX, &fFeaturesEDX);
3428
3429	if ( ASMIsValidStdRange(uMaxId)
3430	&& ( ASMIsIntelCpuEx( uVendorEBX, uVendorECX, uVendorEDX)
3431	\|\| ASMIsViaCentaurCpuEx(uVendorEBX, uVendorECX, uVendorEDX) )
3432	)
3433	{
3434	if ( (fFeaturesECX & X86_CPUID_FEATURE_ECX_VMX)
3435	&& (fFeaturesEDX & X86_CPUID_FEATURE_EDX_MSR)
3436	&& (fFeaturesEDX & X86_CPUID_FEATURE_EDX_FXSR)
3437	)
3438	{
3439	/** @todo Unify code with hmR0InitIntelCpu(). */
3440	uint64_t u64FeatMsr = ASMRdMsr(MSR_IA32_FEATURE_CONTROL);
3441	bool const fInSmxMode = RT_BOOL(ASMGetCR4() & X86_CR4_SMXE);
3442	bool fMsrLocked = RT_BOOL(u64FeatMsr & MSR_IA32_FEATURE_CONTROL_LOCK);
3443	bool fSmxVmxAllowed = RT_BOOL(u64FeatMsr & MSR_IA32_FEATURE_CONTROL_SMX_VMXON);
3444	bool fVmxAllowed = RT_BOOL(u64FeatMsr & MSR_IA32_FEATURE_CONTROL_VMXON);
3445
3446	/* Check if the LOCK bit is set but excludes the required VMXON bit. */
3447	if (fMsrLocked)
3448	{
3449	if (fInSmxMode && !fSmxVmxAllowed)
3450	rc = VERR_VMX_MSR_SMX_VMXON_DISABLED;
3451	else if (!fVmxAllowed)
3452	rc = VERR_VMX_MSR_VMXON_DISABLED;
3453	else
3454	rc = VINF_SUCCESS;
3455	}
3456	else
3457	{
3458	/*
3459	* MSR is not yet locked; we can change it ourselves here.
3460	* Once the lock bit is set, this MSR can no longer be modified.
3461	*/
3462	bool fAllowed;
3463	u64FeatMsr \|= MSR_IA32_FEATURE_CONTROL_LOCK;
3464	if (fInSmxMode)
3465	u64FeatMsr \|= MSR_IA32_FEATURE_CONTROL_SMX_VMXON;
3466	else
3467	u64FeatMsr \|= MSR_IA32_FEATURE_CONTROL_VMXON;
3468
3469	ASMWrMsr(MSR_IA32_FEATURE_CONTROL, u64FeatMsr);
3470
3471	/* Verify. */
3472	u64FeatMsr = ASMRdMsr(MSR_IA32_FEATURE_CONTROL);
3473	fMsrLocked = RT_BOOL(u64FeatMsr & MSR_IA32_FEATURE_CONTROL_LOCK);
3474	fSmxVmxAllowed = fMsrLocked && RT_BOOL(u64FeatMsr & MSR_IA32_FEATURE_CONTROL_SMX_VMXON);
3475	fVmxAllowed = fMsrLocked && RT_BOOL(u64FeatMsr & MSR_IA32_FEATURE_CONTROL_VMXON);
3476	fAllowed = fInSmxMode ? fSmxVmxAllowed : fVmxAllowed;
3477	if (fAllowed)
3478	rc = VINF_SUCCESS;
3479	else
3480	rc = VERR_VMX_MSR_LOCKING_FAILED;
3481	}
3482
3483	if (rc == VINF_SUCCESS)
3484	{
3485	VMX_CAPABILITY vtCaps;
3486
3487	*pfCaps \|= SUPVTCAPS_VT_X;
3488
3489	vtCaps.u = ASMRdMsr(MSR_IA32_VMX_PROCBASED_CTLS);
3490	if (vtCaps.n.allowed1 & VMX_VMCS_CTRL_PROC_EXEC_USE_SECONDARY_EXEC_CTRL)
3491	{
3492	vtCaps.u = ASMRdMsr(MSR_IA32_VMX_PROCBASED_CTLS2);
3493	if (vtCaps.n.allowed1 & VMX_VMCS_CTRL_PROC_EXEC2_EPT)
3494	*pfCaps \|= SUPVTCAPS_NESTED_PAGING;
3495	}
3496	}
3497	}
3498	else
3499	rc = VERR_VMX_NO_VMX;
3500	}
3501	else if ( ASMIsAmdCpuEx(uVendorEBX, uVendorECX, uVendorEDX)
3502	&& ASMIsValidStdRange(uMaxId))
3503	{
3504	uint32_t fExtFeaturesEcx, uExtMaxId;
3505	ASMCpuId(0x80000000, &uExtMaxId, &uDummy, &uDummy, &uDummy);
3506	ASMCpuId(0x80000001, &uDummy, &uDummy, &fExtFeaturesEcx, &uDummy);
3507	if ( ASMIsValidExtRange(uExtMaxId)
3508	&& uExtMaxId >= 0x8000000a
3509	&& (fExtFeaturesEcx & X86_CPUID_AMD_FEATURE_ECX_SVM)
3510	&& (fFeaturesEDX & X86_CPUID_FEATURE_EDX_MSR)
3511	&& (fFeaturesEDX & X86_CPUID_FEATURE_EDX_FXSR)
3512	)
3513	{
3514	/* Check if SVM is disabled */
3515	uint64_t u64FeatMsr = ASMRdMsr(MSR_K8_VM_CR);
3516	if (!(u64FeatMsr & MSR_K8_VM_CR_SVM_DISABLE))
3517	{
3518	uint32_t fSvmFeatures;
3519	*pfCaps \|= SUPVTCAPS_AMD_V;
3520
3521	/* Query AMD-V features. */
3522	ASMCpuId(0x8000000a, &uDummy, &uDummy, &uDummy, &fSvmFeatures);
3523	if (fSvmFeatures & AMD_CPUID_SVM_FEATURE_EDX_NESTED_PAGING)
3524	*pfCaps \|= SUPVTCAPS_NESTED_PAGING;
3525
3526	rc = VINF_SUCCESS;
3527	}
3528	else
3529	rc = VERR_SVM_DISABLED;
3530	}
3531	else
3532	rc = VERR_SVM_NO_SVM;
3533	}
3534	}
3535
3536	RTThreadPreemptRestore(&PreemptState);
3537	return rc;
3538	}
3539
3540
3541	/**
3542	* (Re-)initializes the per-cpu structure prior to starting or resuming the GIP
3543	* updating.
3544	*
3545	* @param pGipCpu The per CPU structure for this CPU.
3546	* @param u64NanoTS The current time.
3547	*/
3548	static void supdrvGipReInitCpu(PSUPGIPCPU pGipCpu, uint64_t u64NanoTS)
3549	{
3550	pGipCpu->u64TSC = ASMReadTSC() - pGipCpu->u32UpdateIntervalTSC;
3551	pGipCpu->u64NanoTS = u64NanoTS;
3552	}
3553
3554
3555	/**
3556	* Set the current TSC and NanoTS value for the CPU.
3557	*
3558	* @param idCpu The CPU ID. Unused - we have to use the APIC ID.
3559	* @param pvUser1 Pointer to the ring-0 GIP mapping.
3560	* @param pvUser2 Pointer to the variable holding the current time.
3561	*/
3562	static DECLCALLBACK(void) supdrvGipReInitCpuCallback(RTCPUID idCpu, void pvUser1, void pvUser2)
3563	{
3564	PSUPGLOBALINFOPAGE pGip = (PSUPGLOBALINFOPAGE)pvUser1;
3565	unsigned iCpu = pGip->aiCpuFromApicId[ASMGetApicId()];
3566
3567	if (RT_LIKELY(iCpu < pGip->cCpus && pGip->aCPUs[iCpu].idCpu == idCpu))
3568	supdrvGipReInitCpu(&pGip->aCPUs[iCpu], (uint64_t )pvUser2);
3569
3570	NOREF(pvUser2);
3571	NOREF(idCpu);
3572	}
3573
3574
3575	/**
3576	* Maps the GIP into userspace and/or get the physical address of the GIP.
3577	*
3578	* @returns IPRT status code.
3579	* @param pSession Session to which the GIP mapping should belong.
3580	* @param ppGipR3 Where to store the address of the ring-3 mapping. (optional)
3581	* @param pHCPhysGip Where to store the physical address. (optional)
3582	*
3583	* @remark There is no reference counting on the mapping, so one call to this function
3584	* count globally as one reference. One call to SUPR0GipUnmap() is will unmap GIP
3585	* and remove the session as a GIP user.
3586	*/
3587	SUPR0DECL(int) SUPR0GipMap(PSUPDRVSESSION pSession, PRTR3PTR ppGipR3, PRTHCPHYS pHCPhysGip)
3588	{
3589	int rc;
3590	PSUPDRVDEVEXT pDevExt = pSession->pDevExt;
3591	RTR3PTR pGipR3 = NIL_RTR3PTR;
3592	RTHCPHYS HCPhys = NIL_RTHCPHYS;
3593	LogFlow(("SUPR0GipMap: pSession=%p ppGipR3=%p pHCPhysGip=%p\n", pSession, ppGipR3, pHCPhysGip));
3594
3595	/*
3596	* Validate
3597	*/
3598	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
3599	AssertPtrNullReturn(ppGipR3, VERR_INVALID_POINTER);
3600	AssertPtrNullReturn(pHCPhysGip, VERR_INVALID_POINTER);
3601
3602	#ifdef SUPDRV_USE_MUTEX_FOR_GIP
3603	RTSemMutexRequest(pDevExt->mtxGip, RT_INDEFINITE_WAIT);
3604	#else
3605	RTSemFastMutexRequest(pDevExt->mtxGip);
3606	#endif
3607	if (pDevExt->pGip)
3608	{
3609	/*
3610	* Map it?
3611	*/
3612	rc = VINF_SUCCESS;
3613	if (ppGipR3)
3614	{
3615	if (pSession->GipMapObjR3 == NIL_RTR0MEMOBJ)
3616	rc = RTR0MemObjMapUser(&pSession->GipMapObjR3, pDevExt->GipMemObj, (RTR3PTR)-1, 0,
3617	RTMEM_PROT_READ, RTR0ProcHandleSelf());
3618	if (RT_SUCCESS(rc))
3619	pGipR3 = RTR0MemObjAddressR3(pSession->GipMapObjR3);
3620	}
3621
3622	/*
3623	* Get physical address.
3624	*/
3625	if (pHCPhysGip && RT_SUCCESS(rc))
3626	HCPhys = pDevExt->HCPhysGip;
3627
3628	/*
3629	* Reference globally.
3630	*/
3631	if (!pSession->fGipReferenced && RT_SUCCESS(rc))
3632	{
3633	pSession->fGipReferenced = 1;
3634	pDevExt->cGipUsers++;
3635	if (pDevExt->cGipUsers == 1)
3636	{
3637	PSUPGLOBALINFOPAGE pGipR0 = pDevExt->pGip;
3638	uint64_t u64NanoTS;
3639	uint32_t u32SystemResolution;
3640	unsigned i;
3641
3642	LogFlow(("SUPR0GipMap: Resumes GIP updating\n"));
3643
3644	/*
3645	* Try bump up the system timer resolution.
3646	* The more interrupts the better...
3647	*/
3648	if ( RT_SUCCESS_NP(RTTimerRequestSystemGranularity( 976563 /* 1024 HZ */, &u32SystemResolution))
3649	\|\| RT_SUCCESS_NP(RTTimerRequestSystemGranularity( 1000000 /* 1000 HZ */, &u32SystemResolution))
3650	\|\| RT_SUCCESS_NP(RTTimerRequestSystemGranularity( 1953125 /* 512 HZ */, &u32SystemResolution))
3651	\|\| RT_SUCCESS_NP(RTTimerRequestSystemGranularity( 2000000 /* 500 HZ */, &u32SystemResolution))
3652	)
3653	{
3654	Assert(RTTimerGetSystemGranularity() <= u32SystemResolution);
3655	pDevExt->u32SystemTimerGranularityGrant = u32SystemResolution;
3656	}
3657
3658	if (pGipR0->aCPUs[0].u32TransactionId != 2 /* not the first time */)
3659	{
3660	for (i = 0; i < RT_ELEMENTS(pGipR0->aCPUs); i++)
3661	ASMAtomicUoWriteU32(&pGipR0->aCPUs[i].u32TransactionId,
3662	(pGipR0->aCPUs[i].u32TransactionId + GIP_UPDATEHZ_RECALC_FREQ * 2)
3663	& ~(GIP_UPDATEHZ_RECALC_FREQ * 2 - 1));
3664	ASMAtomicWriteU64(&pGipR0->u64NanoTSLastUpdateHz, 0);
3665	}
3666
3667	u64NanoTS = RTTimeSystemNanoTS() - pGipR0->u32UpdateIntervalNS;
3668	if ( pGipR0->u32Mode == SUPGIPMODE_SYNC_TSC
3669	\|\| RTMpGetOnlineCount() == 1)
3670	supdrvGipReInitCpu(&pGipR0->aCPUs[0], u64NanoTS);
3671	else
3672	RTMpOnAll(supdrvGipReInitCpuCallback, pGipR0, &u64NanoTS);
3673
3674	#ifndef DO_NOT_START_GIP
3675	rc = RTTimerStart(pDevExt->pGipTimer, 0); AssertRC(rc);
3676	#endif
3677	rc = VINF_SUCCESS;
3678	}
3679	}
3680	}
3681	else
3682	{
3683	rc = VERR_GENERAL_FAILURE;
3684	Log(("SUPR0GipMap: GIP is not available!\n"));
3685	}
3686	#ifdef SUPDRV_USE_MUTEX_FOR_GIP
3687	RTSemMutexRelease(pDevExt->mtxGip);
3688	#else
3689	RTSemFastMutexRelease(pDevExt->mtxGip);
3690	#endif
3691
3692	/*
3693	* Write returns.
3694	*/
3695	if (pHCPhysGip)
3696	*pHCPhysGip = HCPhys;
3697	if (ppGipR3)
3698	*ppGipR3 = pGipR3;
3699
3700	#ifdef DEBUG_DARWIN_GIP
3701	OSDBGPRINT(("SUPR0GipMap: returns %d pHCPhysGip=%lx pGipR3=%p\n", rc, (unsigned long)HCPhys, (void )pGipR3));
3702	#else
3703	LogFlow(( "SUPR0GipMap: returns %d pHCPhysGip=%lx pGipR3=%p\n", rc, (unsigned long)HCPhys, (void )pGipR3));
3704	#endif
3705	return rc;
3706	}
3707
3708
3709	/**
3710	* Unmaps any user mapping of the GIP and terminates all GIP access
3711	* from this session.
3712	*
3713	* @returns IPRT status code.
3714	* @param pSession Session to which the GIP mapping should belong.
3715	*/
3716	SUPR0DECL(int) SUPR0GipUnmap(PSUPDRVSESSION pSession)
3717	{
3718	int rc = VINF_SUCCESS;
3719	PSUPDRVDEVEXT pDevExt = pSession->pDevExt;
3720	#ifdef DEBUG_DARWIN_GIP
3721	OSDBGPRINT(("SUPR0GipUnmap: pSession=%p pGip=%p GipMapObjR3=%p\n",
3722	pSession,
3723	pSession->GipMapObjR3 != NIL_RTR0MEMOBJ ? RTR0MemObjAddress(pSession->GipMapObjR3) : NULL,
3724	pSession->GipMapObjR3));
3725	#else
3726	LogFlow(("SUPR0GipUnmap: pSession=%p\n", pSession));
3727	#endif
3728	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
3729
3730	#ifdef SUPDRV_USE_MUTEX_FOR_GIP
3731	RTSemMutexRequest(pDevExt->mtxGip, RT_INDEFINITE_WAIT);
3732	#else
3733	RTSemFastMutexRequest(pDevExt->mtxGip);
3734	#endif
3735
3736	/*
3737	* Unmap anything?
3738	*/
3739	if (pSession->GipMapObjR3 != NIL_RTR0MEMOBJ)
3740	{
3741	rc = RTR0MemObjFree(pSession->GipMapObjR3, false);
3742	AssertRC(rc);
3743	if (RT_SUCCESS(rc))
3744	pSession->GipMapObjR3 = NIL_RTR0MEMOBJ;
3745	}
3746
3747	/*
3748	* Dereference global GIP.
3749	*/
3750	if (pSession->fGipReferenced && !rc)
3751	{
3752	pSession->fGipReferenced = 0;
3753	if ( pDevExt->cGipUsers > 0
3754	&& !--pDevExt->cGipUsers)
3755	{
3756	LogFlow(("SUPR0GipUnmap: Suspends GIP updating\n"));
3757	#ifndef DO_NOT_START_GIP
3758	rc = RTTimerStop(pDevExt->pGipTimer); AssertRC(rc); rc = VINF_SUCCESS;
3759	#endif
3760
3761	if (pDevExt->u32SystemTimerGranularityGrant)
3762	{
3763	int rc2 = RTTimerReleaseSystemGranularity(pDevExt->u32SystemTimerGranularityGrant);
3764	AssertRC(rc2);
3765	pDevExt->u32SystemTimerGranularityGrant = 0;
3766	}
3767	}
3768	}
3769
3770	#ifdef SUPDRV_USE_MUTEX_FOR_GIP
3771	RTSemMutexRelease(pDevExt->mtxGip);
3772	#else
3773	RTSemFastMutexRelease(pDevExt->mtxGip);
3774	#endif
3775
3776	return rc;
3777	}
3778
3779
3780	/**
3781	* Gets the GIP pointer.
3782	*
3783	* @returns Pointer to the GIP or NULL.
3784	*/
3785	SUPDECL(PSUPGLOBALINFOPAGE) SUPGetGIP(void)
3786	{
3787	return g_pSUPGlobalInfoPage;
3788	}
3789
3790
3791	/**
3792	* Register a component factory with the support driver.
3793	*
3794	* This is currently restricted to kernel sessions only.
3795	*
3796	* @returns VBox status code.
3797	* @retval VINF_SUCCESS on success.
3798	* @retval VERR_NO_MEMORY if we're out of memory.
3799	* @retval VERR_ALREADY_EXISTS if the factory has already been registered.
3800	* @retval VERR_ACCESS_DENIED if it isn't a kernel session.
3801	* @retval VERR_INVALID_PARAMETER on invalid parameter.
3802	* @retval VERR_INVALID_POINTER on invalid pointer parameter.
3803	*
3804	* @param pSession The SUPDRV session (must be a ring-0 session).
3805	* @param pFactory Pointer to the component factory registration structure.
3806	*
3807	* @remarks This interface is also available via SUPR0IdcComponentRegisterFactory.
3808	*/
3809	SUPR0DECL(int) SUPR0ComponentRegisterFactory(PSUPDRVSESSION pSession, PCSUPDRVFACTORY pFactory)
3810	{
3811	PSUPDRVFACTORYREG pNewReg;
3812	const char *psz;
3813	int rc;
3814
3815	/*
3816	* Validate parameters.
3817	*/
3818	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
3819	AssertReturn(pSession->R0Process == NIL_RTR0PROCESS, VERR_ACCESS_DENIED);
3820	AssertPtrReturn(pFactory, VERR_INVALID_POINTER);
3821	AssertPtrReturn(pFactory->pfnQueryFactoryInterface, VERR_INVALID_POINTER);
3822	psz = RTStrEnd(pFactory->szName, sizeof(pFactory->szName));
3823	AssertReturn(psz, VERR_INVALID_PARAMETER);
3824
3825	/*
3826	* Allocate and initialize a new registration structure.
3827	*/
3828	pNewReg = (PSUPDRVFACTORYREG)RTMemAlloc(sizeof(SUPDRVFACTORYREG));
3829	if (pNewReg)
3830	{
3831	pNewReg->pNext = NULL;
3832	pNewReg->pFactory = pFactory;
3833	pNewReg->pSession = pSession;
3834	pNewReg->cchName = psz - &pFactory->szName[0];
3835
3836	/*
3837	* Add it to the tail of the list after checking for prior registration.
3838	*/
3839	rc = RTSemFastMutexRequest(pSession->pDevExt->mtxComponentFactory);
3840	if (RT_SUCCESS(rc))
3841	{
3842	PSUPDRVFACTORYREG pPrev = NULL;
3843	PSUPDRVFACTORYREG pCur = pSession->pDevExt->pComponentFactoryHead;
3844	while (pCur && pCur->pFactory != pFactory)
3845	{
3846	pPrev = pCur;
3847	pCur = pCur->pNext;
3848	}
3849	if (!pCur)
3850	{
3851	if (pPrev)
3852	pPrev->pNext = pNewReg;
3853	else
3854	pSession->pDevExt->pComponentFactoryHead = pNewReg;
3855	rc = VINF_SUCCESS;
3856	}
3857	else
3858	rc = VERR_ALREADY_EXISTS;
3859
3860	RTSemFastMutexRelease(pSession->pDevExt->mtxComponentFactory);
3861	}
3862
3863	if (RT_FAILURE(rc))
3864	RTMemFree(pNewReg);
3865	}
3866	else
3867	rc = VERR_NO_MEMORY;
3868	return rc;
3869	}
3870
3871
3872	/**
3873	* Deregister a component factory.
3874	*
3875	* @returns VBox status code.
3876	* @retval VINF_SUCCESS on success.
3877	* @retval VERR_NOT_FOUND if the factory wasn't registered.
3878	* @retval VERR_ACCESS_DENIED if it isn't a kernel session.
3879	* @retval VERR_INVALID_PARAMETER on invalid parameter.
3880	* @retval VERR_INVALID_POINTER on invalid pointer parameter.
3881	*
3882	* @param pSession The SUPDRV session (must be a ring-0 session).
3883	* @param pFactory Pointer to the component factory registration structure
3884	* previously passed SUPR0ComponentRegisterFactory().
3885	*
3886	* @remarks This interface is also available via SUPR0IdcComponentDeregisterFactory.
3887	*/
3888	SUPR0DECL(int) SUPR0ComponentDeregisterFactory(PSUPDRVSESSION pSession, PCSUPDRVFACTORY pFactory)
3889	{
3890	int rc;
3891
3892	/*
3893	* Validate parameters.
3894	*/
3895	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
3896	AssertReturn(pSession->R0Process == NIL_RTR0PROCESS, VERR_ACCESS_DENIED);
3897	AssertPtrReturn(pFactory, VERR_INVALID_POINTER);
3898
3899	/*
3900	* Take the lock and look for the registration record.
3901	*/
3902	rc = RTSemFastMutexRequest(pSession->pDevExt->mtxComponentFactory);
3903	if (RT_SUCCESS(rc))
3904	{
3905	PSUPDRVFACTORYREG pPrev = NULL;
3906	PSUPDRVFACTORYREG pCur = pSession->pDevExt->pComponentFactoryHead;
3907	while (pCur && pCur->pFactory != pFactory)
3908	{
3909	pPrev = pCur;
3910	pCur = pCur->pNext;
3911	}
3912	if (pCur)
3913	{
3914	if (!pPrev)
3915	pSession->pDevExt->pComponentFactoryHead = pCur->pNext;
3916	else
3917	pPrev->pNext = pCur->pNext;
3918
3919	pCur->pNext = NULL;
3920	pCur->pFactory = NULL;
3921	pCur->pSession = NULL;
3922	rc = VINF_SUCCESS;
3923	}
3924	else
3925	rc = VERR_NOT_FOUND;
3926
3927	RTSemFastMutexRelease(pSession->pDevExt->mtxComponentFactory);
3928
3929	RTMemFree(pCur);
3930	}
3931	return rc;
3932	}
3933
3934
3935	/**
3936	* Queries a component factory.
3937	*
3938	* @returns VBox status code.
3939	* @retval VERR_INVALID_PARAMETER on invalid parameter.
3940	* @retval VERR_INVALID_POINTER on invalid pointer parameter.
3941	* @retval VERR_SUPDRV_COMPONENT_NOT_FOUND if the component factory wasn't found.
3942	* @retval VERR_SUPDRV_INTERFACE_NOT_SUPPORTED if the interface wasn't supported.
3943	*
3944	* @param pSession The SUPDRV session.
3945	* @param pszName The name of the component factory.
3946	* @param pszInterfaceUuid The UUID of the factory interface (stringified).
3947	* @param ppvFactoryIf Where to store the factory interface.
3948	*/
3949	SUPR0DECL(int) SUPR0ComponentQueryFactory(PSUPDRVSESSION pSession, const char pszName, const char pszInterfaceUuid, void **ppvFactoryIf)
3950	{
3951	const char *pszEnd;
3952	size_t cchName;
3953	int rc;
3954
3955	/*
3956	* Validate parameters.
3957	*/
3958	AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER);
3959
3960	AssertPtrReturn(pszName, VERR_INVALID_POINTER);
3961	pszEnd = RTStrEnd(pszName, RT_SIZEOFMEMB(SUPDRVFACTORY, szName));
3962	AssertReturn(pszEnd, VERR_INVALID_PARAMETER);
3963	cchName = pszEnd - pszName;
3964
3965	AssertPtrReturn(pszInterfaceUuid, VERR_INVALID_POINTER);
3966	pszEnd = RTStrEnd(pszInterfaceUuid, RTUUID_STR_LENGTH);
3967	AssertReturn(pszEnd, VERR_INVALID_PARAMETER);
3968
3969	AssertPtrReturn(ppvFactoryIf, VERR_INVALID_POINTER);
3970	*ppvFactoryIf = NULL;
3971
3972	/*
3973	* Take the lock and try all factories by this name.
3974	*/
3975	rc = RTSemFastMutexRequest(pSession->pDevExt->mtxComponentFactory);
3976	if (RT_SUCCESS(rc))
3977	{
3978	PSUPDRVFACTORYREG pCur = pSession->pDevExt->pComponentFactoryHead;
3979	rc = VERR_SUPDRV_COMPONENT_NOT_FOUND;
3980	while (pCur)
3981	{
3982	if ( pCur->cchName == cchName
3983	&& !memcmp(pCur->pFactory->szName, pszName, cchName))
3984	{
3985	void *pvFactory = pCur->pFactory->pfnQueryFactoryInterface(pCur->pFactory, pSession, pszInterfaceUuid);
3986	if (pvFactory)
3987	{
3988	*ppvFactoryIf = pvFactory;
3989	rc = VINF_SUCCESS;
3990	break;
3991	}
3992	rc = VERR_SUPDRV_INTERFACE_NOT_SUPPORTED;
3993	}
3994
3995	/* next */
3996	pCur = pCur->pNext;
3997	}
3998
3999	RTSemFastMutexRelease(pSession->pDevExt->mtxComponentFactory);
4000	}
4001	return rc;
4002	}
4003
4004
4005	/**
4006	* Adds a memory object to the session.
4007	*
4008	* @returns IPRT status code.
4009	* @param pMem Memory tracking structure containing the
4010	* information to track.
4011	* @param pSession The session.
4012	*/
4013	static int supdrvMemAdd(PSUPDRVMEMREF pMem, PSUPDRVSESSION pSession)
4014	{
4015	PSUPDRVBUNDLE pBundle;
4016
4017	/*
4018	* Find free entry and record the allocation.
4019	*/
4020	RTSpinlockAcquire(pSession->Spinlock);
4021	for (pBundle = &pSession->Bundle; pBundle; pBundle = pBundle->pNext)
4022	{
4023	if (pBundle->cUsed < RT_ELEMENTS(pBundle->aMem))
4024	{
4025	unsigned i;
4026	for (i = 0; i < RT_ELEMENTS(pBundle->aMem); i++)
4027	{
4028	if (pBundle->aMem[i].MemObj == NIL_RTR0MEMOBJ)
4029	{
4030	pBundle->cUsed++;
4031	pBundle->aMem[i] = *pMem;
4032	RTSpinlockRelease(pSession->Spinlock);
4033	return VINF_SUCCESS;
4034	}
4035	}
4036	AssertFailed(); /* !!this can't be happening!!! */
4037	}
4038	}
4039	RTSpinlockRelease(pSession->Spinlock);
4040
4041	/*
4042	* Need to allocate a new bundle.
4043	* Insert into the last entry in the bundle.
4044	*/
4045	pBundle = (PSUPDRVBUNDLE)RTMemAllocZ(sizeof(*pBundle));
4046	if (!pBundle)
4047	return VERR_NO_MEMORY;
4048
4049	/* take last entry. */
4050	pBundle->cUsed++;
4051	pBundle->aMem[RT_ELEMENTS(pBundle->aMem) - 1] = *pMem;
4052
4053	/* insert into list. */
4054	RTSpinlockAcquire(pSession->Spinlock);
4055	pBundle->pNext = pSession->Bundle.pNext;
4056	pSession->Bundle.pNext = pBundle;
4057	RTSpinlockRelease(pSession->Spinlock);
4058
4059	return VINF_SUCCESS;
4060	}
4061
4062
4063	/**
4064	* Releases a memory object referenced by pointer and type.
4065	*
4066	* @returns IPRT status code.
4067	* @param pSession Session data.
4068	* @param uPtr Pointer to memory. This is matched against both the R0 and R3 addresses.
4069	* @param eType Memory type.
4070	*/
4071	static int supdrvMemRelease(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr, SUPDRVMEMREFTYPE eType)
4072	{
4073	PSUPDRVBUNDLE pBundle;
4074
4075	/*
4076	* Validate input.
4077	*/
4078	if (!uPtr)
4079	{
4080	Log(("Illegal address %p\n", (void *)uPtr));
4081	return VERR_INVALID_PARAMETER;
4082	}
4083
4084	/*
4085	* Search for the address.
4086	*/
4087	RTSpinlockAcquire(pSession->Spinlock);
4088	for (pBundle = &pSession->Bundle; pBundle; pBundle = pBundle->pNext)
4089	{
4090	if (pBundle->cUsed > 0)
4091	{
4092	unsigned i;
4093	for (i = 0; i < RT_ELEMENTS(pBundle->aMem); i++)
4094	{
4095	if ( pBundle->aMem[i].eType == eType
4096	&& pBundle->aMem[i].MemObj != NIL_RTR0MEMOBJ
4097	&& ( (RTHCUINTPTR)RTR0MemObjAddress(pBundle->aMem[i].MemObj) == uPtr
4098	\|\| ( pBundle->aMem[i].MapObjR3 != NIL_RTR0MEMOBJ
4099	&& RTR0MemObjAddressR3(pBundle->aMem[i].MapObjR3) == uPtr))
4100	)
4101	{
4102	/* Make a copy of it and release it outside the spinlock. */
4103	SUPDRVMEMREF Mem = pBundle->aMem[i];
4104	pBundle->aMem[i].eType = MEMREF_TYPE_UNUSED;
4105	pBundle->aMem[i].MemObj = NIL_RTR0MEMOBJ;
4106	pBundle->aMem[i].MapObjR3 = NIL_RTR0MEMOBJ;
4107	RTSpinlockRelease(pSession->Spinlock);
4108
4109	if (Mem.MapObjR3 != NIL_RTR0MEMOBJ)
4110	{
4111	int rc = RTR0MemObjFree(Mem.MapObjR3, false);
4112	AssertRC(rc); /** @todo figure out how to handle this. */
4113	}
4114	if (Mem.MemObj != NIL_RTR0MEMOBJ)
4115	{
4116	int rc = RTR0MemObjFree(Mem.MemObj, true /* fFreeMappings */);
4117	AssertRC(rc); /** @todo figure out how to handle this. */
4118	}
4119	return VINF_SUCCESS;
4120	}
4121	}
4122	}
4123	}
4124	RTSpinlockRelease(pSession->Spinlock);
4125	Log(("Failed to find %p!!! (eType=%d)\n", (void *)uPtr, eType));
4126	return VERR_INVALID_PARAMETER;
4127	}
4128
4129
4130	/**
4131	* Opens an image. If it's the first time it's opened the call must upload
4132	* the bits using the supdrvIOCtl_LdrLoad() / SUPDRV_IOCTL_LDR_LOAD function.
4133	*
4134	* This is the 1st step of the loading.
4135	*
4136	* @returns IPRT status code.
4137	* @param pDevExt Device globals.
4138	* @param pSession Session data.
4139	* @param pReq The open request.
4140	*/
4141	static int supdrvIOCtl_LdrOpen(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLDROPEN pReq)
4142	{
4143	int rc;
4144	PSUPDRVLDRIMAGE pImage;
4145	void *pv;
4146	size_t cchName = strlen(pReq->u.In.szName); /* (caller checked < 32). */
4147	LogFlow(("supdrvIOCtl_LdrOpen: szName=%s cbImageWithTabs=%d\n", pReq->u.In.szName, pReq->u.In.cbImageWithTabs));
4148
4149	/*
4150	* Check if we got an instance of the image already.
4151	*/
4152	supdrvLdrLock(pDevExt);
4153	for (pImage = pDevExt->pLdrImages; pImage; pImage = pImage->pNext)
4154	{
4155	if ( pImage->szName[cchName] == '\0'
4156	&& !memcmp(pImage->szName, pReq->u.In.szName, cchName))
4157	{
4158	/** @todo check cbImageBits and cbImageWithTabs here, if they differs that indicates that the images are different. */
4159	pImage->cUsage++;
4160	pReq->u.Out.pvImageBase = pImage->pvImage;
4161	pReq->u.Out.fNeedsLoading = pImage->uState == SUP_IOCTL_LDR_OPEN;
4162	pReq->u.Out.fNativeLoader = pImage->fNative;
4163	supdrvLdrAddUsage(pSession, pImage);
4164	supdrvLdrUnlock(pDevExt);
4165	return VINF_SUCCESS;
4166	}
4167	}
4168	/* (not found - add it!) */
4169
4170	/*
4171	* Allocate memory.
4172	*/
4173	Assert(cchName < sizeof(pImage->szName));
4174	pv = RTMemAlloc(sizeof(SUPDRVLDRIMAGE));
4175	if (!pv)
4176	{
4177	supdrvLdrUnlock(pDevExt);
4178	Log(("supdrvIOCtl_LdrOpen: RTMemAlloc() failed\n"));
4179	return /VERR_NO_MEMORY/ VERR_INTERNAL_ERROR_2;
4180	}
4181
4182	/*
4183	* Setup and link in the LDR stuff.
4184	*/
4185	pImage = (PSUPDRVLDRIMAGE)pv;
4186	pImage->pvImage = NULL;
4187	pImage->pvImageAlloc = NULL;
4188	pImage->cbImageWithTabs = pReq->u.In.cbImageWithTabs;
4189	pImage->cbImageBits = pReq->u.In.cbImageBits;
4190	pImage->cSymbols = 0;
4191	pImage->paSymbols = NULL;
4192	pImage->pachStrTab = NULL;
4193	pImage->cbStrTab = 0;
4194	pImage->pfnModuleInit = NULL;
4195	pImage->pfnModuleTerm = NULL;
4196	pImage->pfnServiceReqHandler = NULL;
4197	pImage->uState = SUP_IOCTL_LDR_OPEN;
4198	pImage->cUsage = 1;
4199	pImage->pDevExt = pDevExt;
4200	memcpy(pImage->szName, pReq->u.In.szName, cchName + 1);
4201
4202	/*
4203	* Try load it using the native loader, if that isn't supported, fall back
4204	* on the older method.
4205	*/
4206	pImage->fNative = true;
4207	rc = supdrvOSLdrOpen(pDevExt, pImage, pReq->u.In.szFilename);
4208	if (rc == VERR_NOT_SUPPORTED)
4209	{
4210	pImage->pvImageAlloc = RTMemExecAlloc(pImage->cbImageBits + 31);
4211	pImage->pvImage = RT_ALIGN_P(pImage->pvImageAlloc, 32);
4212	pImage->fNative = false;
4213	rc = pImage->pvImageAlloc ? VINF_SUCCESS : VERR_NO_EXEC_MEMORY;
4214	}
4215	if (RT_FAILURE(rc))
4216	{
4217	supdrvLdrUnlock(pDevExt);
4218	RTMemFree(pImage);
4219	Log(("supdrvIOCtl_LdrOpen(%s): failed - %Rrc\n", pReq->u.In.szName, rc));
4220	return rc;
4221	}
4222	Assert(VALID_PTR(pImage->pvImage) \|\| RT_FAILURE(rc));
4223
4224	/*
4225	* Link it.
4226	*/
4227	pImage->pNext = pDevExt->pLdrImages;
4228	pDevExt->pLdrImages = pImage;
4229
4230	supdrvLdrAddUsage(pSession, pImage);
4231
4232	pReq->u.Out.pvImageBase = pImage->pvImage;
4233	pReq->u.Out.fNeedsLoading = true;
4234	pReq->u.Out.fNativeLoader = pImage->fNative;
4235	supdrvOSLdrNotifyOpened(pDevExt, pImage);
4236
4237	supdrvLdrUnlock(pDevExt);
4238	return VINF_SUCCESS;
4239	}
4240
4241
4242	/**
4243	* Worker that validates a pointer to an image entrypoint.
4244	*
4245	* @returns IPRT status code.
4246	* @param pDevExt The device globals.
4247	* @param pImage The loader image.
4248	* @param pv The pointer into the image.
4249	* @param fMayBeNull Whether it may be NULL.
4250	* @param pszWhat What is this entrypoint? (for logging)
4251	* @param pbImageBits The image bits prepared by ring-3.
4252	*
4253	* @remarks Will leave the lock on failure.
4254	*/
4255	static int supdrvLdrValidatePointer(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, void *pv,
4256	bool fMayBeNull, const uint8_t pbImageBits, const char pszWhat)
4257	{
4258	if (!fMayBeNull \|\| pv)
4259	{
4260	if ((uintptr_t)pv - (uintptr_t)pImage->pvImage >= pImage->cbImageBits)
4261	{
4262	supdrvLdrUnlock(pDevExt);
4263	Log(("Out of range (%p LB %#x): %s=%p\n", pImage->pvImage, pImage->cbImageBits, pszWhat, pv));
4264	return VERR_INVALID_PARAMETER;
4265	}
4266
4267	if (pImage->fNative)
4268	{
4269	int rc = supdrvOSLdrValidatePointer(pDevExt, pImage, pv, pbImageBits);
4270	if (RT_FAILURE(rc))
4271	{
4272	supdrvLdrUnlock(pDevExt);
4273	Log(("Bad entry point address: %s=%p (rc=%Rrc)\n", pszWhat, pv, rc));
4274	return rc;
4275	}
4276	}
4277	}
4278	return VINF_SUCCESS;
4279	}
4280
4281
4282	/**
4283	* Loads the image bits.
4284	*
4285	* This is the 2nd step of the loading.
4286	*
4287	* @returns IPRT status code.
4288	* @param pDevExt Device globals.
4289	* @param pSession Session data.
4290	* @param pReq The request.
4291	*/
4292	static int supdrvIOCtl_LdrLoad(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLDRLOAD pReq)
4293	{
4294	PSUPDRVLDRUSAGE pUsage;
4295	PSUPDRVLDRIMAGE pImage;
4296	int rc;
4297	LogFlow(("supdrvIOCtl_LdrLoad: pvImageBase=%p cbImageWithBits=%d\n", pReq->u.In.pvImageBase, pReq->u.In.cbImageWithTabs));
4298
4299	/*
4300	* Find the ldr image.
4301	*/
4302	supdrvLdrLock(pDevExt);
4303	pUsage = pSession->pLdrUsage;
4304	while (pUsage && pUsage->pImage->pvImage != pReq->u.In.pvImageBase)
4305	pUsage = pUsage->pNext;
4306	if (!pUsage)
4307	{
4308	supdrvLdrUnlock(pDevExt);
4309	Log(("SUP_IOCTL_LDR_LOAD: couldn't find image!\n"));
4310	return VERR_INVALID_HANDLE;
4311	}
4312	pImage = pUsage->pImage;
4313
4314	/*
4315	* Validate input.
4316	*/
4317	if ( pImage->cbImageWithTabs != pReq->u.In.cbImageWithTabs
4318	\|\| pImage->cbImageBits != pReq->u.In.cbImageBits)
4319	{
4320	supdrvLdrUnlock(pDevExt);
4321	Log(("SUP_IOCTL_LDR_LOAD: image size mismatch!! %d(prep) != %d(load) or %d != %d\n",
4322	pImage->cbImageWithTabs, pReq->u.In.cbImageWithTabs, pImage->cbImageBits, pReq->u.In.cbImageBits));
4323	return VERR_INVALID_HANDLE;
4324	}
4325
4326	if (pImage->uState != SUP_IOCTL_LDR_OPEN)
4327	{
4328	unsigned uState = pImage->uState;
4329	supdrvLdrUnlock(pDevExt);
4330	if (uState != SUP_IOCTL_LDR_LOAD)
4331	AssertMsgFailed(("SUP_IOCTL_LDR_LOAD: invalid image state %d (%#x)!\n", uState, uState));
4332	return VERR_ALREADY_LOADED;
4333	}
4334
4335	switch (pReq->u.In.eEPType)
4336	{
4337	case SUPLDRLOADEP_NOTHING:
4338	break;
4339
4340	case SUPLDRLOADEP_VMMR0:
4341	rc = supdrvLdrValidatePointer( pDevExt, pImage, pReq->u.In.EP.VMMR0.pvVMMR0, false, pReq->u.In.abImage, "pvVMMR0");
4342	if (RT_SUCCESS(rc))
4343	rc = supdrvLdrValidatePointer(pDevExt, pImage, pReq->u.In.EP.VMMR0.pvVMMR0EntryInt, false, pReq->u.In.abImage, "pvVMMR0EntryInt");
4344	if (RT_SUCCESS(rc))
4345	rc = supdrvLdrValidatePointer(pDevExt, pImage, pReq->u.In.EP.VMMR0.pvVMMR0EntryFast, false, pReq->u.In.abImage, "pvVMMR0EntryFast");
4346	if (RT_SUCCESS(rc))
4347	rc = supdrvLdrValidatePointer(pDevExt, pImage, pReq->u.In.EP.VMMR0.pvVMMR0EntryEx, false, pReq->u.In.abImage, "pvVMMR0EntryEx");
4348	if (RT_FAILURE(rc))
4349	return rc;
4350	break;
4351
4352	case SUPLDRLOADEP_SERVICE:
4353	rc = supdrvLdrValidatePointer(pDevExt, pImage, pReq->u.In.EP.Service.pfnServiceReq, false, pReq->u.In.abImage, "pfnServiceReq");
4354	if (RT_FAILURE(rc))
4355	return rc;
4356	if ( pReq->u.In.EP.Service.apvReserved[0] != NIL_RTR0PTR
4357	\|\| pReq->u.In.EP.Service.apvReserved[1] != NIL_RTR0PTR
4358	\|\| pReq->u.In.EP.Service.apvReserved[2] != NIL_RTR0PTR)
4359	{
4360	supdrvLdrUnlock(pDevExt);
4361	Log(("Out of range (%p LB %#x): apvReserved={%p,%p,%p} MBZ!\n",
4362	pImage->pvImage, pReq->u.In.cbImageWithTabs,
4363	pReq->u.In.EP.Service.apvReserved[0],
4364	pReq->u.In.EP.Service.apvReserved[1],
4365	pReq->u.In.EP.Service.apvReserved[2]));
4366	return VERR_INVALID_PARAMETER;
4367	}
4368	break;
4369
4370	default:
4371	supdrvLdrUnlock(pDevExt);
4372	Log(("Invalid eEPType=%d\n", pReq->u.In.eEPType));
4373	return VERR_INVALID_PARAMETER;
4374	}
4375
4376	rc = supdrvLdrValidatePointer(pDevExt, pImage, pReq->u.In.pfnModuleInit, true, pReq->u.In.abImage, "pfnModuleInit");
4377	if (RT_FAILURE(rc))
4378	return rc;
4379	rc = supdrvLdrValidatePointer(pDevExt, pImage, pReq->u.In.pfnModuleTerm, true, pReq->u.In.abImage, "pfnModuleTerm");
4380	if (RT_FAILURE(rc))
4381	return rc;
4382
4383	/*
4384	* Allocate and copy the tables.
4385	* (No need to do try/except as this is a buffered request.)
4386	*/
4387	pImage->cbStrTab = pReq->u.In.cbStrTab;
4388	if (pImage->cbStrTab)
4389	{
4390	pImage->pachStrTab = (char *)RTMemAlloc(pImage->cbStrTab);
4391	if (pImage->pachStrTab)
4392	memcpy(pImage->pachStrTab, &pReq->u.In.abImage[pReq->u.In.offStrTab], pImage->cbStrTab);
4393	else
4394	rc = /VERR_NO_MEMORY/ VERR_INTERNAL_ERROR_3;
4395	}
4396
4397	pImage->cSymbols = pReq->u.In.cSymbols;
4398	if (RT_SUCCESS(rc) && pImage->cSymbols)
4399	{
4400	size_t cbSymbols = pImage->cSymbols * sizeof(SUPLDRSYM);
4401	pImage->paSymbols = (PSUPLDRSYM)RTMemAlloc(cbSymbols);
4402	if (pImage->paSymbols)
4403	memcpy(pImage->paSymbols, &pReq->u.In.abImage[pReq->u.In.offSymbols], cbSymbols);
4404	else
4405	rc = /VERR_NO_MEMORY/ VERR_INTERNAL_ERROR_4;
4406	}
4407
4408	/*
4409	* Copy the bits / complete native loading.
4410	*/
4411	if (RT_SUCCESS(rc))
4412	{
4413	pImage->uState = SUP_IOCTL_LDR_LOAD;
4414	pImage->pfnModuleInit = pReq->u.In.pfnModuleInit;
4415	pImage->pfnModuleTerm = pReq->u.In.pfnModuleTerm;
4416
4417	if (pImage->fNative)
4418	rc = supdrvOSLdrLoad(pDevExt, pImage, pReq->u.In.abImage, pReq);
4419	else
4420	{
4421	memcpy(pImage->pvImage, &pReq->u.In.abImage[0], pImage->cbImageBits);
4422	Log(("vboxdrv: Loaded '%s' at %p\n", pImage->szName, pImage->pvImage));
4423	}
4424	}
4425
4426	/*
4427	* Update any entry points.
4428	*/
4429	if (RT_SUCCESS(rc))
4430	{
4431	switch (pReq->u.In.eEPType)
4432	{
4433	default:
4434	case SUPLDRLOADEP_NOTHING:
4435	rc = VINF_SUCCESS;
4436	break;
4437	case SUPLDRLOADEP_VMMR0:
4438	rc = supdrvLdrSetVMMR0EPs(pDevExt, pReq->u.In.EP.VMMR0.pvVMMR0, pReq->u.In.EP.VMMR0.pvVMMR0EntryInt,
4439	pReq->u.In.EP.VMMR0.pvVMMR0EntryFast, pReq->u.In.EP.VMMR0.pvVMMR0EntryEx);
4440	break;
4441	case SUPLDRLOADEP_SERVICE:
4442	pImage->pfnServiceReqHandler = pReq->u.In.EP.Service.pfnServiceReq;
4443	rc = VINF_SUCCESS;
4444	break;
4445	}
4446	}
4447
4448	/*
4449	* On success call the module initialization.
4450	*/
4451	LogFlow(("supdrvIOCtl_LdrLoad: pfnModuleInit=%p\n", pImage->pfnModuleInit));
4452	if (RT_SUCCESS(rc) && pImage->pfnModuleInit)
4453	{
4454	Log(("supdrvIOCtl_LdrLoad: calling pfnModuleInit=%p\n", pImage->pfnModuleInit));
4455	pDevExt->pLdrInitImage = pImage;
4456	pDevExt->hLdrInitThread = RTThreadNativeSelf();
4457	rc = pImage->pfnModuleInit(pImage);
4458	pDevExt->pLdrInitImage = NULL;
4459	pDevExt->hLdrInitThread = NIL_RTNATIVETHREAD;
4460	if (RT_FAILURE(rc) && pDevExt->pvVMMR0 == pImage->pvImage)
4461	supdrvLdrUnsetVMMR0EPs(pDevExt);
4462	}
4463
4464	if (RT_FAILURE(rc))
4465	{
4466	/* Inform the tracing component in case ModuleInit registered TPs. */
4467	supdrvTracerModuleUnloading(pDevExt, pImage);
4468
4469	pImage->uState = SUP_IOCTL_LDR_OPEN;
4470	pImage->pfnModuleInit = NULL;
4471	pImage->pfnModuleTerm = NULL;
4472	pImage->pfnServiceReqHandler= NULL;
4473	pImage->cbStrTab = 0;
4474	RTMemFree(pImage->pachStrTab);
4475	pImage->pachStrTab = NULL;
4476	RTMemFree(pImage->paSymbols);
4477	pImage->paSymbols = NULL;
4478	pImage->cSymbols = 0;
4479	}
4480
4481	supdrvLdrUnlock(pDevExt);
4482	return rc;
4483	}
4484
4485
4486	/**
4487	* Frees a previously loaded (prep'ed) image.
4488	*
4489	* @returns IPRT status code.
4490	* @param pDevExt Device globals.
4491	* @param pSession Session data.
4492	* @param pReq The request.
4493	*/
4494	static int supdrvIOCtl_LdrFree(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLDRFREE pReq)
4495	{
4496	int rc;
4497	PSUPDRVLDRUSAGE pUsagePrev;
4498	PSUPDRVLDRUSAGE pUsage;
4499	PSUPDRVLDRIMAGE pImage;
4500	LogFlow(("supdrvIOCtl_LdrFree: pvImageBase=%p\n", pReq->u.In.pvImageBase));
4501
4502	/*
4503	* Find the ldr image.
4504	*/
4505	supdrvLdrLock(pDevExt);
4506	pUsagePrev = NULL;
4507	pUsage = pSession->pLdrUsage;
4508	while (pUsage && pUsage->pImage->pvImage != pReq->u.In.pvImageBase)
4509	{
4510	pUsagePrev = pUsage;
4511	pUsage = pUsage->pNext;
4512	}
4513	if (!pUsage)
4514	{
4515	supdrvLdrUnlock(pDevExt);
4516	Log(("SUP_IOCTL_LDR_FREE: couldn't find image!\n"));
4517	return VERR_INVALID_HANDLE;
4518	}
4519
4520	/*
4521	* Check if we can remove anything.
4522	*/
4523	rc = VINF_SUCCESS;
4524	pImage = pUsage->pImage;
4525	if (pImage->cUsage <= 1 \|\| pUsage->cUsage <= 1)
4526	{
4527	/*
4528	* Check if there are any objects with destructors in the image, if
4529	* so leave it for the session cleanup routine so we get a chance to
4530	* clean things up in the right order and not leave them all dangling.
4531	*/
4532	RTSpinlockAcquire(pDevExt->Spinlock);
4533	if (pImage->cUsage <= 1)
4534	{
4535	PSUPDRVOBJ pObj;
4536	for (pObj = pDevExt->pObjs; pObj; pObj = pObj->pNext)
4537	if (RT_UNLIKELY((uintptr_t)pObj->pfnDestructor - (uintptr_t)pImage->pvImage < pImage->cbImageBits))
4538	{
4539	rc = VERR_DANGLING_OBJECTS;
4540	break;
4541	}
4542	}
4543	else
4544	{
4545	PSUPDRVUSAGE pGenUsage;
4546	for (pGenUsage = pSession->pUsage; pGenUsage; pGenUsage = pGenUsage->pNext)
4547	if (RT_UNLIKELY((uintptr_t)pGenUsage->pObj->pfnDestructor - (uintptr_t)pImage->pvImage < pImage->cbImageBits))
4548	{
4549	rc = VERR_DANGLING_OBJECTS;
4550	break;
4551	}
4552	}
4553	RTSpinlockRelease(pDevExt->Spinlock);
4554	if (rc == VINF_SUCCESS)
4555	{
4556	/* unlink it */
4557	if (pUsagePrev)
4558	pUsagePrev->pNext = pUsage->pNext;
4559	else
4560	pSession->pLdrUsage = pUsage->pNext;
4561
4562	/* free it */
4563	pUsage->pImage = NULL;
4564	pUsage->pNext = NULL;
4565	RTMemFree(pUsage);
4566
4567	/*
4568	* Dereference the image.
4569	*/
4570	if (pImage->cUsage <= 1)
4571	supdrvLdrFree(pDevExt, pImage);
4572	else
4573	pImage->cUsage--;
4574	}
4575	else
4576	{
4577	Log(("supdrvIOCtl_LdrFree: Dangling objects in %p/%s!\n", pImage->pvImage, pImage->szName));
4578	rc = VINF_SUCCESS; /** @todo BRANCH-2.1: remove this after branching. */
4579	}
4580	}
4581	else
4582	{
4583	/*
4584	* Dereference both image and usage.
4585	*/
4586	pImage->cUsage--;
4587	pUsage->cUsage--;
4588	}
4589
4590	supdrvLdrUnlock(pDevExt);
4591	return rc;
4592	}
4593
4594
4595	/**
4596	* Gets the address of a symbol in an open image.
4597	*
4598	* @returns IPRT status code.
4599	* @param pDevExt Device globals.
4600	* @param pSession Session data.
4601	* @param pReq The request buffer.
4602	*/
4603	static int supdrvIOCtl_LdrGetSymbol(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLDRGETSYMBOL pReq)
4604	{
4605	PSUPDRVLDRIMAGE pImage;
4606	PSUPDRVLDRUSAGE pUsage;
4607	uint32_t i;
4608	PSUPLDRSYM paSyms;
4609	const char *pchStrings;
4610	const size_t cbSymbol = strlen(pReq->u.In.szSymbol) + 1;
4611	void *pvSymbol = NULL;
4612	int rc = VERR_GENERAL_FAILURE;
4613	Log3(("supdrvIOCtl_LdrGetSymbol: pvImageBase=%p szSymbol=\"%s\"\n", pReq->u.In.pvImageBase, pReq->u.In.szSymbol));
4614
4615	/*
4616	* Find the ldr image.
4617	*/
4618	supdrvLdrLock(pDevExt);
4619	pUsage = pSession->pLdrUsage;
4620	while (pUsage && pUsage->pImage->pvImage != pReq->u.In.pvImageBase)
4621	pUsage = pUsage->pNext;
4622	if (!pUsage)
4623	{
4624	supdrvLdrUnlock(pDevExt);
4625	Log(("SUP_IOCTL_LDR_GET_SYMBOL: couldn't find image!\n"));
4626	return VERR_INVALID_HANDLE;
4627	}
4628	pImage = pUsage->pImage;
4629	if (pImage->uState != SUP_IOCTL_LDR_LOAD)
4630	{
4631	unsigned uState = pImage->uState;
4632	supdrvLdrUnlock(pDevExt);
4633	Log(("SUP_IOCTL_LDR_GET_SYMBOL: invalid image state %d (%#x)!\n", uState, uState)); NOREF(uState);
4634	return VERR_ALREADY_LOADED;
4635	}
4636
4637	/*
4638	* Search the symbol strings.
4639	*
4640	* Note! The int32_t is for native loading on solaris where the data
4641	* and text segments are in very different places.
4642	*/
4643	pchStrings = pImage->pachStrTab;
4644	paSyms = pImage->paSymbols;
4645	for (i = 0; i < pImage->cSymbols; i++)
4646	{
4647	if ( paSyms[i].offName + cbSymbol <= pImage->cbStrTab
4648	&& !memcmp(pchStrings + paSyms[i].offName, pReq->u.In.szSymbol, cbSymbol))
4649	{
4650	pvSymbol = (uint8_t *)pImage->pvImage + (int32_t)paSyms[i].offSymbol;
4651	rc = VINF_SUCCESS;
4652	break;
4653	}
4654	}
4655	supdrvLdrUnlock(pDevExt);
4656	pReq->u.Out.pvSymbol = pvSymbol;
4657	return rc;
4658	}
4659
4660
4661	/**
4662	* Gets the address of a symbol in an open image or the support driver.
4663	*
4664	* @returns VINF_SUCCESS on success.
4665	* @returns
4666	* @param pDevExt Device globals.
4667	* @param pSession Session data.
4668	* @param pReq The request buffer.
4669	*/
4670	static int supdrvIDC_LdrGetSymbol(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPDRVIDCREQGETSYM pReq)
4671	{
4672	int rc = VINF_SUCCESS;
4673	const char *pszSymbol = pReq->u.In.pszSymbol;
4674	const char *pszModule = pReq->u.In.pszModule;
4675	size_t cbSymbol;
4676	char const *pszEnd;
4677	uint32_t i;
4678
4679	/*
4680	* Input validation.
4681	*/
4682	AssertPtrReturn(pszSymbol, VERR_INVALID_POINTER);
4683	pszEnd = RTStrEnd(pszSymbol, 512);
4684	AssertReturn(pszEnd, VERR_INVALID_PARAMETER);
4685	cbSymbol = pszEnd - pszSymbol + 1;
4686
4687	if (pszModule)
4688	{
4689	AssertPtrReturn(pszModule, VERR_INVALID_POINTER);
4690	pszEnd = RTStrEnd(pszModule, 64);
4691	AssertReturn(pszEnd, VERR_INVALID_PARAMETER);
4692	}
4693	Log3(("supdrvIDC_LdrGetSymbol: pszModule=%p:{%s} pszSymbol=%p:{%s}\n", pszModule, pszModule, pszSymbol, pszSymbol));
4694
4695
4696	if ( !pszModule
4697	\|\| !strcmp(pszModule, "SupDrv"))
4698	{
4699	/*
4700	* Search the support driver export table.
4701	*/
4702	for (i = 0; i < RT_ELEMENTS(g_aFunctions); i++)
4703	if (!strcmp(g_aFunctions[i].szName, pszSymbol))
4704	{
4705	pReq->u.Out.pfnSymbol = g_aFunctions[i].pfn;
4706	break;
4707	}
4708	}
4709	else
4710	{
4711	/*
4712	* Find the loader image.
4713	*/
4714	PSUPDRVLDRIMAGE pImage;
4715
4716	supdrvLdrLock(pDevExt);
4717
4718	for (pImage = pDevExt->pLdrImages; pImage; pImage = pImage->pNext)
4719	if (!strcmp(pImage->szName, pszModule))
4720	break;
4721	if (pImage && pImage->uState == SUP_IOCTL_LDR_LOAD)
4722	{
4723	/*
4724	* Search the symbol strings.
4725	*/
4726	const char *pchStrings = pImage->pachStrTab;
4727	PCSUPLDRSYM paSyms = pImage->paSymbols;
4728	for (i = 0; i < pImage->cSymbols; i++)
4729	{
4730	if ( paSyms[i].offName + cbSymbol <= pImage->cbStrTab
4731	&& !memcmp(pchStrings + paSyms[i].offName, pszSymbol, cbSymbol))
4732	{
4733	/*
4734	* Found it! Calc the symbol address and add a reference to the module.
4735	*/
4736	pReq->u.Out.pfnSymbol = (PFNRT)((uint8_t *)pImage->pvImage + (int32_t)paSyms[i].offSymbol);
4737	rc = supdrvLdrAddUsage(pSession, pImage);
4738	break;
4739	}
4740	}
4741	}
4742	else
4743	rc = pImage ? VERR_WRONG_ORDER : VERR_MODULE_NOT_FOUND;
4744
4745	supdrvLdrUnlock(pDevExt);
4746	}
4747	return rc;
4748	}
4749
4750
4751	/**
4752	* Updates the VMMR0 entry point pointers.
4753	*
4754	* @returns IPRT status code.
4755	* @param pDevExt Device globals.
4756	* @param pSession Session data.
4757	* @param pVMMR0 VMMR0 image handle.
4758	* @param pvVMMR0EntryInt VMMR0EntryInt address.
4759	* @param pvVMMR0EntryFast VMMR0EntryFast address.
4760	* @param pvVMMR0EntryEx VMMR0EntryEx address.
4761	* @remark Caller must own the loader mutex.
4762	*/
4763	static int supdrvLdrSetVMMR0EPs(PSUPDRVDEVEXT pDevExt, void pvVMMR0, void pvVMMR0EntryInt, void pvVMMR0EntryFast, void pvVMMR0EntryEx)
4764	{
4765	int rc = VINF_SUCCESS;
4766	LogFlow(("supdrvLdrSetR0EP pvVMMR0=%p pvVMMR0EntryInt=%p\n", pvVMMR0, pvVMMR0EntryInt));
4767
4768
4769	/*
4770	* Check if not yet set.
4771	*/
4772	if (!pDevExt->pvVMMR0)
4773	{
4774	pDevExt->pvVMMR0 = pvVMMR0;
4775	pDevExt->pfnVMMR0EntryInt = pvVMMR0EntryInt;
4776	pDevExt->pfnVMMR0EntryFast = pvVMMR0EntryFast;
4777	pDevExt->pfnVMMR0EntryEx = pvVMMR0EntryEx;
4778	}
4779	else
4780	{
4781	/*
4782	* Return failure or success depending on whether the values match or not.
4783	*/
4784	if ( pDevExt->pvVMMR0 != pvVMMR0
4785	\|\| (void *)pDevExt->pfnVMMR0EntryInt != pvVMMR0EntryInt
4786	\|\| (void *)pDevExt->pfnVMMR0EntryFast != pvVMMR0EntryFast
4787	\|\| (void *)pDevExt->pfnVMMR0EntryEx != pvVMMR0EntryEx)
4788	{
4789	AssertMsgFailed(("SUP_IOCTL_LDR_SETR0EP: Already set pointing to a different module!\n"));
4790	rc = VERR_INVALID_PARAMETER;
4791	}
4792	}
4793	return rc;
4794	}
4795
4796
4797	/**
4798	* Unsets the VMMR0 entry point installed by supdrvLdrSetR0EP.
4799	*
4800	* @param pDevExt Device globals.
4801	*/
4802	static void supdrvLdrUnsetVMMR0EPs(PSUPDRVDEVEXT pDevExt)
4803	{
4804	pDevExt->pvVMMR0 = NULL;
4805	pDevExt->pfnVMMR0EntryInt = NULL;
4806	pDevExt->pfnVMMR0EntryFast = NULL;
4807	pDevExt->pfnVMMR0EntryEx = NULL;
4808	}
4809
4810
4811	/**
4812	* Adds a usage reference in the specified session of an image.
4813	*
4814	* Called while owning the loader semaphore.
4815	*
4816	* @returns VINF_SUCCESS on success and VERR_NO_MEMORY on failure.
4817	* @param pSession Session in question.
4818	* @param pImage Image which the session is using.
4819	*/
4820	static int supdrvLdrAddUsage(PSUPDRVSESSION pSession, PSUPDRVLDRIMAGE pImage)
4821	{
4822	PSUPDRVLDRUSAGE pUsage;
4823	LogFlow(("supdrvLdrAddUsage: pImage=%p\n", pImage));
4824
4825	/*
4826	* Referenced it already?
4827	*/
4828	pUsage = pSession->pLdrUsage;
4829	while (pUsage)
4830	{
4831	if (pUsage->pImage == pImage)
4832	{
4833	pUsage->cUsage++;
4834	return VINF_SUCCESS;
4835	}
4836	pUsage = pUsage->pNext;
4837	}
4838
4839	/*
4840	* Allocate new usage record.
4841	*/
4842	pUsage = (PSUPDRVLDRUSAGE)RTMemAlloc(sizeof(*pUsage));
4843	AssertReturn(pUsage, /VERR_NO_MEMORY/ VERR_INTERNAL_ERROR_5);
4844	pUsage->cUsage = 1;
4845	pUsage->pImage = pImage;
4846	pUsage->pNext = pSession->pLdrUsage;
4847	pSession->pLdrUsage = pUsage;
4848	return VINF_SUCCESS;
4849	}
4850
4851
4852	/**
4853	* Frees a load image.
4854	*
4855	* @param pDevExt Pointer to device extension.
4856	* @param pImage Pointer to the image we're gonna free.
4857	* This image must exit!
4858	* @remark The caller MUST own SUPDRVDEVEXT::mtxLdr!
4859	*/
4860	static void supdrvLdrFree(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage)
4861	{
4862	PSUPDRVLDRIMAGE pImagePrev;
4863	LogFlow(("supdrvLdrFree: pImage=%p\n", pImage));
4864
4865	/* find it - arg. should've used doubly linked list. */
4866	Assert(pDevExt->pLdrImages);
4867	pImagePrev = NULL;
4868	if (pDevExt->pLdrImages != pImage)
4869	{
4870	pImagePrev = pDevExt->pLdrImages;
4871	while (pImagePrev->pNext != pImage)
4872	pImagePrev = pImagePrev->pNext;
4873	Assert(pImagePrev->pNext == pImage);
4874	}
4875
4876	/* unlink */
4877	if (pImagePrev)
4878	pImagePrev->pNext = pImage->pNext;
4879	else
4880	pDevExt->pLdrImages = pImage->pNext;
4881
4882	/* check if this is VMMR0.r0 unset its entry point pointers. */
4883	if (pDevExt->pvVMMR0 == pImage->pvImage)
4884	supdrvLdrUnsetVMMR0EPs(pDevExt);
4885
4886	/* check for objects with destructors in this image. (Shouldn't happen.) */
4887	if (pDevExt->pObjs)
4888	{
4889	unsigned cObjs = 0;
4890	PSUPDRVOBJ pObj;
4891	RTSpinlockAcquire(pDevExt->Spinlock);
4892	for (pObj = pDevExt->pObjs; pObj; pObj = pObj->pNext)
4893	if (RT_UNLIKELY((uintptr_t)pObj->pfnDestructor - (uintptr_t)pImage->pvImage < pImage->cbImageBits))
4894	{
4895	pObj->pfnDestructor = NULL;
4896	cObjs++;
4897	}
4898	RTSpinlockRelease(pDevExt->Spinlock);
4899	if (cObjs)
4900	OSDBGPRINT(("supdrvLdrFree: Image '%s' has %d dangling objects!\n", pImage->szName, cObjs));
4901	}
4902
4903	/* call termination function if fully loaded. */
4904	if ( pImage->pfnModuleTerm
4905	&& pImage->uState == SUP_IOCTL_LDR_LOAD)
4906	{
4907	LogFlow(("supdrvIOCtl_LdrLoad: calling pfnModuleTerm=%p\n", pImage->pfnModuleTerm));
4908	pImage->pfnModuleTerm(pImage);
4909	}
4910
4911	/* Inform the tracing component. */
4912	supdrvTracerModuleUnloading(pDevExt, pImage);
4913
4914	/* do native unload if appropriate. */
4915	if (pImage->fNative)
4916	supdrvOSLdrUnload(pDevExt, pImage);
4917
4918	/* free the image */
4919	pImage->cUsage = 0;
4920	pImage->pDevExt = NULL;
4921	pImage->pNext = NULL;
4922	pImage->uState = SUP_IOCTL_LDR_FREE;
4923	RTMemExecFree(pImage->pvImageAlloc, pImage->cbImageBits + 31);
4924	pImage->pvImageAlloc = NULL;
4925	RTMemFree(pImage->pachStrTab);
4926	pImage->pachStrTab = NULL;
4927	RTMemFree(pImage->paSymbols);
4928	pImage->paSymbols = NULL;
4929	RTMemFree(pImage);
4930	}
4931
4932
4933	/**
4934	* Acquires the loader lock.
4935	*
4936	* @returns IPRT status code.
4937	* @param pDevExt The device extension.
4938	*/
4939	DECLINLINE(int) supdrvLdrLock(PSUPDRVDEVEXT pDevExt)
4940	{
4941	#ifdef SUPDRV_USE_MUTEX_FOR_LDR
4942	int rc = RTSemMutexRequest(pDevExt->mtxLdr, RT_INDEFINITE_WAIT);
4943	#else
4944	int rc = RTSemFastMutexRequest(pDevExt->mtxLdr);
4945	#endif
4946	AssertRC(rc);
4947	return rc;
4948	}
4949
4950
4951	/**
4952	* Releases the loader lock.
4953	*
4954	* @returns IPRT status code.
4955	* @param pDevExt The device extension.
4956	*/
4957	DECLINLINE(int) supdrvLdrUnlock(PSUPDRVDEVEXT pDevExt)
4958	{
4959	#ifdef SUPDRV_USE_MUTEX_FOR_LDR
4960	return RTSemMutexRelease(pDevExt->mtxLdr);
4961	#else
4962	return RTSemFastMutexRelease(pDevExt->mtxLdr);
4963	#endif
4964	}
4965
4966
4967	/**
4968	* Implements the service call request.
4969	*
4970	* @returns VBox status code.
4971	* @param pDevExt The device extension.
4972	* @param pSession The calling session.
4973	* @param pReq The request packet, valid.
4974	*/
4975	static int supdrvIOCtl_CallServiceModule(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPCALLSERVICE pReq)
4976	{
4977	#if !defined(RT_OS_WINDOWS) \|\| defined(RT_ARCH_AMD64) \|\| defined(DEBUG)
4978	int rc;
4979
4980	/*
4981	* Find the module first in the module referenced by the calling session.
4982	*/
4983	rc = supdrvLdrLock(pDevExt);
4984	if (RT_SUCCESS(rc))
4985	{
4986	PFNSUPR0SERVICEREQHANDLER pfnServiceReqHandler = NULL;
4987	PSUPDRVLDRUSAGE pUsage;
4988
4989	for (pUsage = pSession->pLdrUsage; pUsage; pUsage = pUsage->pNext)
4990	if ( pUsage->pImage->pfnServiceReqHandler
4991	&& !strcmp(pUsage->pImage->szName, pReq->u.In.szName))
4992	{
4993	pfnServiceReqHandler = pUsage->pImage->pfnServiceReqHandler;
4994	break;
4995	}
4996	supdrvLdrUnlock(pDevExt);
4997
4998	if (pfnServiceReqHandler)
4999	{
5000	/*
5001	* Call it.
5002	*/
5003	if (pReq->Hdr.cbIn == SUP_IOCTL_CALL_SERVICE_SIZE(0))
5004	rc = pfnServiceReqHandler(pSession, pReq->u.In.uOperation, pReq->u.In.u64Arg, NULL);
5005	else
5006	rc = pfnServiceReqHandler(pSession, pReq->u.In.uOperation, pReq->u.In.u64Arg, (PSUPR0SERVICEREQHDR)&pReq->abReqPkt[0]);
5007	}
5008	else
5009	rc = VERR_SUPDRV_SERVICE_NOT_FOUND;
5010	}
5011
5012	/* log it */
5013	if ( RT_FAILURE(rc)
5014	&& rc != VERR_INTERRUPTED
5015	&& rc != VERR_TIMEOUT)
5016	Log(("SUP_IOCTL_CALL_SERVICE: rc=%Rrc op=%u out=%u arg=%RX64 p/t=%RTproc/%RTthrd\n",
5017	rc, pReq->u.In.uOperation, pReq->Hdr.cbOut, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf()));
5018	else
5019	Log4(("SUP_IOCTL_CALL_SERVICE: rc=%Rrc op=%u out=%u arg=%RX64 p/t=%RTproc/%RTthrd\n",
5020	rc, pReq->u.In.uOperation, pReq->Hdr.cbOut, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf()));
5021	return rc;
5022	#else /* RT_OS_WINDOWS && !RT_ARCH_AMD64 && !DEBUG */
5023	return VERR_NOT_IMPLEMENTED;
5024	#endif /* RT_OS_WINDOWS && !RT_ARCH_AMD64 && !DEBUG */
5025	}
5026
5027
5028	/**
5029	* Implements the logger settings request.
5030	*
5031	* @returns VBox status code.
5032	* @param pDevExt The device extension.
5033	* @param pSession The caller's session.
5034	* @param pReq The request.
5035	*/
5036	static int supdrvIOCtl_LoggerSettings(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLOGGERSETTINGS pReq)
5037	{
5038	const char *pszGroup = &pReq->u.In.szStrings[pReq->u.In.offGroups];
5039	const char *pszFlags = &pReq->u.In.szStrings[pReq->u.In.offFlags];
5040	const char *pszDest = &pReq->u.In.szStrings[pReq->u.In.offDestination];
5041	PRTLOGGER pLogger = NULL;
5042	int rc;
5043
5044	/*
5045	* Some further validation.
5046	*/
5047	switch (pReq->u.In.fWhat)
5048	{
5049	case SUPLOGGERSETTINGS_WHAT_SETTINGS:
5050	case SUPLOGGERSETTINGS_WHAT_CREATE:
5051	break;
5052
5053	case SUPLOGGERSETTINGS_WHAT_DESTROY:
5054	if (pszGroup \|\| pszFlags \|\| *pszDest)
5055	return VERR_INVALID_PARAMETER;
5056	if (pReq->u.In.fWhich == SUPLOGGERSETTINGS_WHICH_RELEASE)
5057	return VERR_ACCESS_DENIED;
5058	break;
5059
5060	default:
5061	return VERR_INTERNAL_ERROR;
5062	}
5063
5064	/*
5065	* Get the logger.
5066	*/
5067	switch (pReq->u.In.fWhich)
5068	{
5069	case SUPLOGGERSETTINGS_WHICH_DEBUG:
5070	pLogger = RTLogGetDefaultInstance();
5071	break;
5072
5073	case SUPLOGGERSETTINGS_WHICH_RELEASE:
5074	pLogger = RTLogRelDefaultInstance();
5075	break;
5076
5077	default:
5078	return VERR_INTERNAL_ERROR;
5079	}
5080
5081	/*
5082	* Do the job.
5083	*/
5084	switch (pReq->u.In.fWhat)
5085	{
5086	case SUPLOGGERSETTINGS_WHAT_SETTINGS:
5087	if (pLogger)
5088	{
5089	rc = RTLogFlags(pLogger, pszFlags);
5090	if (RT_SUCCESS(rc))
5091	rc = RTLogGroupSettings(pLogger, pszGroup);
5092	NOREF(pszDest);
5093	}
5094	else
5095	rc = VERR_NOT_FOUND;
5096	break;
5097
5098	case SUPLOGGERSETTINGS_WHAT_CREATE:
5099	{
5100	if (pLogger)
5101	rc = VERR_ALREADY_EXISTS;
5102	else
5103	{
5104	static const char * const s_apszGroups[] = VBOX_LOGGROUP_NAMES;
5105
5106	rc = RTLogCreate(&pLogger,
5107	0 /* fFlags */,
5108	pszGroup,
5109	pReq->u.In.fWhich == SUPLOGGERSETTINGS_WHICH_DEBUG
5110	? "VBOX_LOG"
5111	: "VBOX_RELEASE_LOG",
5112	RT_ELEMENTS(s_apszGroups),
5113	s_apszGroups,
5114	RTLOGDEST_STDOUT \| RTLOGDEST_DEBUGGER,
5115	NULL);
5116	if (RT_SUCCESS(rc))
5117	{
5118	rc = RTLogFlags(pLogger, pszFlags);
5119	NOREF(pszDest);
5120	if (RT_SUCCESS(rc))
5121	{
5122	switch (pReq->u.In.fWhich)
5123	{
5124	case SUPLOGGERSETTINGS_WHICH_DEBUG:
5125	pLogger = RTLogSetDefaultInstance(pLogger);
5126	break;
5127	case SUPLOGGERSETTINGS_WHICH_RELEASE:
5128	pLogger = RTLogRelSetDefaultInstance(pLogger);
5129	break;
5130	}
5131	}
5132	RTLogDestroy(pLogger);
5133	}
5134	}
5135	break;
5136	}
5137
5138	case SUPLOGGERSETTINGS_WHAT_DESTROY:
5139	switch (pReq->u.In.fWhich)
5140	{
5141	case SUPLOGGERSETTINGS_WHICH_DEBUG:
5142	pLogger = RTLogSetDefaultInstance(NULL);
5143	break;
5144	case SUPLOGGERSETTINGS_WHICH_RELEASE:
5145	pLogger = RTLogRelSetDefaultInstance(NULL);
5146	break;
5147	}
5148	rc = RTLogDestroy(pLogger);
5149	break;
5150
5151	default:
5152	{
5153	rc = VERR_INTERNAL_ERROR;
5154	break;
5155	}
5156	}
5157
5158	return rc;
5159	}
5160
5161
5162	/**
5163	* Implements the MSR prober operations.
5164	*
5165	* @returns VBox status code.
5166	* @param pDevExt The device extension.
5167	* @param pReq The request.
5168	*/
5169	static int supdrvIOCtl_MsrProber(PSUPDRVDEVEXT pDevExt, PSUPMSRPROBER pReq)
5170	{
5171	#ifdef SUPDRV_WITH_MSR_PROBER
5172	RTCPUID const idCpu = pReq->u.In.idCpu == UINT32_MAX ? NIL_RTCPUID : pReq->u.In.idCpu;
5173	int rc;
5174
5175	switch (pReq->u.In.enmOp)
5176	{
5177	case SUPMSRPROBEROP_READ:
5178	{
5179	uint64_t uValue;
5180	rc = supdrvOSMsrProberRead(pReq->u.In.uMsr, idCpu, &uValue);
5181	if (RT_SUCCESS(rc))
5182	{
5183	pReq->u.Out.uResults.Read.uValue = uValue;
5184	pReq->u.Out.uResults.Read.fGp = false;
5185	}
5186	else if (rc == VERR_ACCESS_DENIED)
5187	{
5188	pReq->u.Out.uResults.Read.uValue = 0;
5189	pReq->u.Out.uResults.Read.fGp = true;
5190	rc = VINF_SUCCESS;
5191	}
5192	break;
5193	}
5194
5195	case SUPMSRPROBEROP_WRITE:
5196	rc = supdrvOSMsrProberWrite(pReq->u.In.uMsr, idCpu, pReq->u.In.uArgs.Write.uToWrite);
5197	if (RT_SUCCESS(rc))
5198	pReq->u.Out.uResults.Write.fGp = false;
5199	else if (rc == VERR_ACCESS_DENIED)
5200	{
5201	pReq->u.Out.uResults.Write.fGp = true;
5202	rc = VINF_SUCCESS;
5203	}
5204	break;
5205
5206	case SUPMSRPROBEROP_MODIFY:
5207	case SUPMSRPROBEROP_MODIFY_FASTER:
5208	rc = supdrvOSMsrProberModify(idCpu, pReq);
5209	break;
5210
5211	default:
5212	return VERR_INVALID_FUNCTION;
5213	}
5214	return rc;
5215	#else
5216	return VERR_NOT_IMPLEMENTED;
5217	#endif
5218	}
5219
5220
5221
5222	/**
5223	* Creates the GIP.
5224	*
5225	* @returns VBox status code.
5226	* @param pDevExt Instance data. GIP stuff may be updated.
5227	*/
5228	static int supdrvGipCreate(PSUPDRVDEVEXT pDevExt)
5229	{
5230	PSUPGLOBALINFOPAGE pGip;
5231	RTHCPHYS HCPhysGip;
5232	uint32_t u32SystemResolution;
5233	uint32_t u32Interval;
5234	unsigned cCpus;
5235	int rc;
5236
5237
5238	LogFlow(("supdrvGipCreate:\n"));
5239
5240	/* assert order */
5241	Assert(pDevExt->u32SystemTimerGranularityGrant == 0);
5242	Assert(pDevExt->GipMemObj == NIL_RTR0MEMOBJ);
5243	Assert(!pDevExt->pGipTimer);
5244
5245	/*
5246	* Check the CPU count.
5247	*/
5248	cCpus = RTMpGetArraySize();
5249	if ( cCpus > RTCPUSET_MAX_CPUS
5250	\|\| cCpus > 256 /ApicId is used for the mappings/)
5251	{
5252	SUPR0Printf("VBoxDrv: Too many CPUs (%u) for the GIP (max %u)\n", cCpus, RT_MIN(RTCPUSET_MAX_CPUS, 256));
5253	return VERR_TOO_MANY_CPUS;
5254	}
5255
5256	/*
5257	* Allocate a contiguous set of pages with a default kernel mapping.
5258	*/
5259	rc = RTR0MemObjAllocCont(&pDevExt->GipMemObj, RT_UOFFSETOF(SUPGLOBALINFOPAGE, aCPUs[cCpus]), false /fExecutable/);
5260	if (RT_FAILURE(rc))
5261	{
5262	OSDBGPRINT(("supdrvGipCreate: failed to allocate the GIP page. rc=%d\n", rc));
5263	return rc;
5264	}
5265	pGip = (PSUPGLOBALINFOPAGE)RTR0MemObjAddress(pDevExt->GipMemObj); AssertPtr(pGip);
5266	HCPhysGip = RTR0MemObjGetPagePhysAddr(pDevExt->GipMemObj, 0); Assert(HCPhysGip != NIL_RTHCPHYS);
5267
5268	/*
5269	* Find a reasonable update interval and initialize the structure.
5270	*/
5271	u32Interval = u32SystemResolution = RTTimerGetSystemGranularity();
5272	while (u32Interval < 10000000 /* 10 ms */)
5273	u32Interval += u32SystemResolution;
5274
5275	supdrvGipInit(pDevExt, pGip, HCPhysGip, RTTimeSystemNanoTS(), 1000000000 / u32Interval /=Hz/, cCpus);
5276
5277	/*
5278	* Create the timer.
5279	* If CPU_ALL isn't supported we'll have to fall back to synchronous mode.
5280	*/
5281	if (pGip->u32Mode == SUPGIPMODE_ASYNC_TSC)
5282	{
5283	rc = RTTimerCreateEx(&pDevExt->pGipTimer, u32Interval, RTTIMER_FLAGS_CPU_ALL, supdrvGipAsyncTimer, pDevExt);
5284	if (rc == VERR_NOT_SUPPORTED)
5285	{
5286	OSDBGPRINT(("supdrvGipCreate: omni timer not supported, falling back to synchronous mode\n"));
5287	pGip->u32Mode = SUPGIPMODE_SYNC_TSC;
5288	}
5289	}
5290	if (pGip->u32Mode != SUPGIPMODE_ASYNC_TSC)
5291	rc = RTTimerCreateEx(&pDevExt->pGipTimer, u32Interval, 0 /* fFlags */, supdrvGipSyncTimer, pDevExt);
5292	if (RT_SUCCESS(rc))
5293	{
5294	rc = RTMpNotificationRegister(supdrvGipMpEvent, pDevExt);
5295	if (RT_SUCCESS(rc))
5296	{
5297	rc = RTMpOnAll(supdrvGipInitOnCpu, pDevExt, pGip);
5298	if (RT_SUCCESS(rc))
5299	{
5300	/*
5301	* We're good.
5302	*/
5303	Log(("supdrvGipCreate: %u ns interval.\n", u32Interval));
5304	g_pSUPGlobalInfoPage = pGip;
5305	return VINF_SUCCESS;
5306	}
5307
5308	OSDBGPRINT(("supdrvGipCreate: RTMpOnAll failed with rc=%Rrc\n", rc));
5309	RTMpNotificationDeregister(supdrvGipMpEvent, pDevExt);
5310
5311	}
5312	else
5313	OSDBGPRINT(("supdrvGipCreate: failed to register MP event notfication. rc=%Rrc\n", rc));
5314	}
5315	else
5316	{
5317	OSDBGPRINT(("supdrvGipCreate: failed create GIP timer at %u ns interval. rc=%Rrc\n", u32Interval, rc));
5318	Assert(!pDevExt->pGipTimer);
5319	}
5320	supdrvGipDestroy(pDevExt);
5321	return rc;
5322	}
5323
5324
5325	/**
5326	* Terminates the GIP.
5327	*
5328	* @param pDevExt Instance data. GIP stuff may be updated.
5329	*/
5330	static void supdrvGipDestroy(PSUPDRVDEVEXT pDevExt)
5331	{
5332	int rc;
5333	#ifdef DEBUG_DARWIN_GIP
5334	OSDBGPRINT(("supdrvGipDestroy: pDevExt=%p pGip=%p pGipTimer=%p GipMemObj=%p\n", pDevExt,
5335	pDevExt->GipMemObj != NIL_RTR0MEMOBJ ? RTR0MemObjAddress(pDevExt->GipMemObj) : NULL,
5336	pDevExt->pGipTimer, pDevExt->GipMemObj));
5337	#endif
5338
5339	/*
5340	* Invalid the GIP data.
5341	*/
5342	if (pDevExt->pGip)
5343	{
5344	supdrvGipTerm(pDevExt->pGip);
5345	pDevExt->pGip = NULL;
5346	}
5347	g_pSUPGlobalInfoPage = NULL;
5348
5349	/*
5350	* Destroy the timer and free the GIP memory object.
5351	*/
5352	if (pDevExt->pGipTimer)
5353	{
5354	rc = RTTimerDestroy(pDevExt->pGipTimer); AssertRC(rc);
5355	pDevExt->pGipTimer = NULL;
5356	}
5357
5358	if (pDevExt->GipMemObj != NIL_RTR0MEMOBJ)
5359	{
5360	rc = RTR0MemObjFree(pDevExt->GipMemObj, true /* free mappings */); AssertRC(rc);
5361	pDevExt->GipMemObj = NIL_RTR0MEMOBJ;
5362	}
5363
5364	/*
5365	* Finally, make sure we've release the system timer resolution request
5366	* if one actually succeeded and is still pending.
5367	*/
5368	if (pDevExt->u32SystemTimerGranularityGrant)
5369	{
5370	rc = RTTimerReleaseSystemGranularity(pDevExt->u32SystemTimerGranularityGrant); AssertRC(rc);
5371	pDevExt->u32SystemTimerGranularityGrant = 0;
5372	}
5373	}
5374
5375
5376	/**
5377	* Timer callback function sync GIP mode.
5378	* @param pTimer The timer.
5379	* @param pvUser The device extension.
5380	*/
5381	static DECLCALLBACK(void) supdrvGipSyncTimer(PRTTIMER pTimer, void *pvUser, uint64_t iTick)
5382	{
5383	RTCCUINTREG fOldFlags = ASMIntDisableFlags(); /* No interruptions please (real problem on S10). */
5384	PSUPDRVDEVEXT pDevExt = (PSUPDRVDEVEXT)pvUser;
5385	uint64_t u64TSC = ASMReadTSC();
5386	uint64_t NanoTS = RTTimeSystemNanoTS();
5387
5388	supdrvGipUpdate(pDevExt, NanoTS, u64TSC, NIL_RTCPUID, iTick);
5389
5390	ASMSetFlags(fOldFlags);
5391	}
5392
5393
5394	/**
5395	* Timer callback function for async GIP mode.
5396	* @param pTimer The timer.
5397	* @param pvUser The device extension.
5398	*/
5399	static DECLCALLBACK(void) supdrvGipAsyncTimer(PRTTIMER pTimer, void *pvUser, uint64_t iTick)
5400	{
5401	RTCCUINTREG fOldFlags = ASMIntDisableFlags(); /* No interruptions please (real problem on S10). */
5402	PSUPDRVDEVEXT pDevExt = (PSUPDRVDEVEXT)pvUser;
5403	RTCPUID idCpu = RTMpCpuId();
5404	uint64_t u64TSC = ASMReadTSC();
5405	uint64_t NanoTS = RTTimeSystemNanoTS();
5406
5407	/** @todo reset the transaction number and whatnot when iTick == 1. */
5408	if (pDevExt->idGipMaster == idCpu)
5409	supdrvGipUpdate(pDevExt, NanoTS, u64TSC, idCpu, iTick);
5410	else
5411	supdrvGipUpdatePerCpu(pDevExt, NanoTS, u64TSC, idCpu, ASMGetApicId(), iTick);
5412
5413	ASMSetFlags(fOldFlags);
5414	}
5415
5416
5417	/**
5418	* Finds our (@a idCpu) entry, or allocates a new one if not found.
5419	*
5420	* @returns Index of the CPU in the cache set.
5421	* @param pGip The GIP.
5422	* @param idCpu The CPU ID.
5423	*/
5424	static uint32_t supdrvGipCpuIndexFromCpuId(PSUPGLOBALINFOPAGE pGip, RTCPUID idCpu)
5425	{
5426	uint32_t i, cTries;
5427
5428	/*
5429	* ASSUMES that CPU IDs are constant.
5430	*/
5431	for (i = 0; i < pGip->cCpus; i++)
5432	if (pGip->aCPUs[i].idCpu == idCpu)
5433	return i;
5434
5435	cTries = 0;
5436	do
5437	{
5438	for (i = 0; i < pGip->cCpus; i++)
5439	{
5440	bool fRc;
5441	ASMAtomicCmpXchgSize(&pGip->aCPUs[i].idCpu, idCpu, NIL_RTCPUID, fRc);
5442	if (fRc)
5443	return i;
5444	}
5445	} while (cTries++ < 32);
5446	AssertReleaseFailed();
5447	return i - 1;
5448	}
5449
5450
5451	/**
5452	* The calling CPU should be accounted as online, update GIP accordingly.
5453	*
5454	* This is used by supdrvGipMpEvent as well as the supdrvGipCreate.
5455	*
5456	* @param pDevExt The device extension.
5457	* @param idCpu The CPU ID.
5458	*/
5459	static void supdrvGipMpEventOnline(PSUPDRVDEVEXT pDevExt, RTCPUID idCpu)
5460	{
5461	int iCpuSet = 0;
5462	uint16_t idApic = UINT16_MAX;
5463	uint32_t i = 0;
5464	uint64_t u64NanoTS = 0;
5465	PSUPGLOBALINFOPAGE pGip = pDevExt->pGip;
5466
5467	AssertPtrReturnVoid(pGip);
5468	AssertRelease(idCpu == RTMpCpuId());
5469	Assert(pGip->cPossibleCpus == RTMpGetCount());
5470
5471	/*
5472	* Do this behind a spinlock with interrupts disabled as this can fire
5473	* on all CPUs simultaneously, see @bugref{6110}.
5474	*/
5475	RTSpinlockAcquire(pDevExt->hGipSpinlock);
5476
5477	/*
5478	* Update the globals.
5479	*/
5480	ASMAtomicWriteU16(&pGip->cPresentCpus, RTMpGetPresentCount());
5481	ASMAtomicWriteU16(&pGip->cOnlineCpus, RTMpGetOnlineCount());
5482	iCpuSet = RTMpCpuIdToSetIndex(idCpu);
5483	if (iCpuSet >= 0)
5484	{
5485	Assert(RTCpuSetIsMemberByIndex(&pGip->PossibleCpuSet, iCpuSet));
5486	RTCpuSetAddByIndex(&pGip->OnlineCpuSet, iCpuSet);
5487	RTCpuSetAddByIndex(&pGip->PresentCpuSet, iCpuSet);
5488	}
5489
5490	/*
5491	* Update the entry.
5492	*/
5493	u64NanoTS = RTTimeSystemNanoTS() - pGip->u32UpdateIntervalNS;
5494	i = supdrvGipCpuIndexFromCpuId(pGip, idCpu);
5495	supdrvGipInitCpu(pGip, &pGip->aCPUs[i], u64NanoTS);
5496	idApic = ASMGetApicId();
5497	ASMAtomicWriteU16(&pGip->aCPUs[i].idApic, idApic);
5498	ASMAtomicWriteS16(&pGip->aCPUs[i].iCpuSet, (int16_t)iCpuSet);
5499	ASMAtomicWriteSize(&pGip->aCPUs[i].idCpu, idCpu);
5500
5501	/*
5502	* Update the APIC ID and CPU set index mappings.
5503	*/
5504	ASMAtomicWriteU16(&pGip->aiCpuFromApicId[idApic], i);
5505	ASMAtomicWriteU16(&pGip->aiCpuFromCpuSetIdx[iCpuSet], i);
5506
5507	/* commit it */
5508	ASMAtomicWriteSize(&pGip->aCPUs[i].enmState, SUPGIPCPUSTATE_ONLINE);
5509
5510	RTSpinlockReleaseNoInts(pDevExt->hGipSpinlock);
5511	}
5512
5513
5514	/**
5515	* The CPU should be accounted as offline, update the GIP accordingly.
5516	*
5517	* This is used by supdrvGipMpEvent.
5518	*
5519	* @param pDevExt The device extension.
5520	* @param idCpu The CPU ID.
5521	*/
5522	static void supdrvGipMpEventOffline(PSUPDRVDEVEXT pDevExt, RTCPUID idCpu)
5523	{
5524	int iCpuSet;
5525	unsigned i;
5526
5527	PSUPGLOBALINFOPAGE pGip = pDevExt->pGip;
5528
5529	AssertPtrReturnVoid(pGip);
5530	RTSpinlockAcquire(pDevExt->hGipSpinlock);
5531
5532	iCpuSet = RTMpCpuIdToSetIndex(idCpu);
5533	AssertReturnVoid(iCpuSet >= 0);
5534
5535	i = pGip->aiCpuFromCpuSetIdx[iCpuSet];
5536	AssertReturnVoid(i < pGip->cCpus);
5537	AssertReturnVoid(pGip->aCPUs[i].idCpu == idCpu);
5538
5539	Assert(RTCpuSetIsMemberByIndex(&pGip->PossibleCpuSet, iCpuSet));
5540	RTCpuSetDelByIndex(&pGip->OnlineCpuSet, iCpuSet);
5541
5542	/* commit it */
5543	ASMAtomicWriteSize(&pGip->aCPUs[i].enmState, SUPGIPCPUSTATE_OFFLINE);
5544
5545	RTSpinlockReleaseNoInts(pDevExt->hGipSpinlock);
5546	}
5547
5548
5549	/**
5550	* Multiprocessor event notification callback.
5551	*
5552	* This is used to make sure that the GIP master gets passed on to
5553	* another CPU. It also updates the associated CPU data.
5554	*
5555	* @param enmEvent The event.
5556	* @param idCpu The cpu it applies to.
5557	* @param pvUser Pointer to the device extension.
5558	*
5559	* @remarks This function -must- fire on the newly online'd CPU for the
5560	* RTMPEVENT_ONLINE case and can fire on any CPU for the
5561	* RTMPEVENT_OFFLINE case.
5562	*/
5563	static DECLCALLBACK(void) supdrvGipMpEvent(RTMPEVENT enmEvent, RTCPUID idCpu, void *pvUser)
5564	{
5565	PSUPDRVDEVEXT pDevExt = (PSUPDRVDEVEXT)pvUser;
5566	PSUPGLOBALINFOPAGE pGip = pDevExt->pGip;
5567
5568	AssertRelease(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
5569
5570	/*
5571	* Update the GIP CPU data.
5572	*/
5573	if (pGip)
5574	{
5575	switch (enmEvent)
5576	{
5577	case RTMPEVENT_ONLINE:
5578	AssertRelease(idCpu == RTMpCpuId());
5579	supdrvGipMpEventOnline(pDevExt, idCpu);
5580	break;
5581	case RTMPEVENT_OFFLINE:
5582	supdrvGipMpEventOffline(pDevExt, idCpu);
5583	break;
5584
5585	}
5586	}
5587
5588	/*
5589	* Make sure there is a master GIP.
5590	*/
5591	if (enmEvent == RTMPEVENT_OFFLINE)
5592	{
5593	RTCPUID idGipMaster = ASMAtomicReadU32(&pDevExt->idGipMaster);
5594	if (idGipMaster == idCpu)
5595	{
5596	/*
5597	* Find a new GIP master.
5598	*/
5599	bool fIgnored;
5600	unsigned i;
5601	RTCPUID idNewGipMaster = NIL_RTCPUID;
5602	RTCPUSET OnlineCpus;
5603	RTMpGetOnlineSet(&OnlineCpus);
5604
5605	for (i = 0; i < RTCPUSET_MAX_CPUS; i++)
5606	{
5607	RTCPUID idCurCpu = RTMpCpuIdFromSetIndex(i);
5608	if ( RTCpuSetIsMember(&OnlineCpus, idCurCpu)
5609	&& idCurCpu != idGipMaster)
5610	{
5611	idNewGipMaster = idCurCpu;
5612	break;
5613	}
5614	}
5615
5616	Log(("supdrvGipMpEvent: Gip master %#lx -> %#lx\n", (long)idGipMaster, (long)idNewGipMaster));
5617	ASMAtomicCmpXchgSize(&pDevExt->idGipMaster, idNewGipMaster, idGipMaster, fIgnored);
5618	NOREF(fIgnored);
5619	}
5620	}
5621	}
5622
5623
5624	/**
5625	* Callback used by supdrvDetermineAsyncTSC to read the TSC on a CPU.
5626	*
5627	* @param idCpu Ignored.
5628	* @param pvUser1 Where to put the TSC.
5629	* @param pvUser2 Ignored.
5630	*/
5631	static DECLCALLBACK(void) supdrvDetermineAsyncTscWorker(RTCPUID idCpu, void pvUser1, void pvUser2)
5632	{
5633	#if 1
5634	ASMAtomicWriteU64((uint64_t volatile *)pvUser1, ASMReadTSC());
5635	#else
5636	(uint64_t )pvUser1 = ASMReadTSC();
5637	#endif
5638	}
5639
5640
5641	/**
5642	* Determine if Async GIP mode is required because of TSC drift.
5643	*
5644	* When using the default/normal timer code it is essential that the time stamp counter
5645	* (TSC) runs never backwards, that is, a read operation to the counter should return
5646	* a bigger value than any previous read operation. This is guaranteed by the latest
5647	* AMD CPUs and by newer Intel CPUs which never enter the C2 state (P4). In any other
5648	* case we have to choose the asynchronous timer mode.
5649	*
5650	* @param poffMin Pointer to the determined difference between different cores.
5651	* @return false if the time stamp counters appear to be synchronized, true otherwise.
5652	*/
5653	static bool supdrvDetermineAsyncTsc(uint64_t *poffMin)
5654	{
5655	/*
5656	* Just iterate all the cpus 8 times and make sure that the TSC is
5657	* ever increasing. We don't bother taking TSC rollover into account.
5658	*/
5659	int iEndCpu = RTMpGetArraySize();
5660	int iCpu;
5661	int cLoops = 8;
5662	bool fAsync = false;
5663	int rc = VINF_SUCCESS;
5664	uint64_t offMax = 0;
5665	uint64_t offMin = ~(uint64_t)0;
5666	uint64_t PrevTsc = ASMReadTSC();
5667
5668	while (cLoops-- > 0)
5669	{
5670	for (iCpu = 0; iCpu < iEndCpu; iCpu++)
5671	{
5672	uint64_t CurTsc;
5673	rc = RTMpOnSpecific(RTMpCpuIdFromSetIndex(iCpu), supdrvDetermineAsyncTscWorker, &CurTsc, NULL);
5674	if (RT_SUCCESS(rc))
5675	{
5676	if (CurTsc <= PrevTsc)
5677	{
5678	fAsync = true;
5679	offMin = offMax = PrevTsc - CurTsc;
5680	Log(("supdrvDetermineAsyncTsc: iCpu=%d cLoops=%d CurTsc=%llx PrevTsc=%llx\n",
5681	iCpu, cLoops, CurTsc, PrevTsc));
5682	break;
5683	}
5684
5685	/* Gather statistics (except the first time). */
5686	if (iCpu != 0 \|\| cLoops != 7)
5687	{
5688	uint64_t off = CurTsc - PrevTsc;
5689	if (off < offMin)
5690	offMin = off;
5691	if (off > offMax)
5692	offMax = off;
5693	Log2(("%d/%d: off=%llx\n", cLoops, iCpu, off));
5694	}
5695
5696	/* Next */
5697	PrevTsc = CurTsc;
5698	}
5699	else if (rc == VERR_NOT_SUPPORTED)
5700	break;
5701	else
5702	AssertMsg(rc == VERR_CPU_NOT_FOUND \|\| rc == VERR_CPU_OFFLINE, ("%d\n", rc));
5703	}
5704
5705	/* broke out of the loop. */
5706	if (iCpu < iEndCpu)
5707	break;
5708	}
5709
5710	poffMin = offMin; / Almost RTMpOnSpecific profiling. */
5711	Log(("supdrvDetermineAsyncTsc: returns %d; iEndCpu=%d rc=%d offMin=%llx offMax=%llx\n",
5712	fAsync, iEndCpu, rc, offMin, offMax));
5713	#if !defined(RT_OS_SOLARIS) && !defined(RT_OS_OS2) && !defined(RT_OS_WINDOWS)
5714	OSDBGPRINT(("vboxdrv: fAsync=%d offMin=%#lx offMax=%#lx\n", fAsync, (long)offMin, (long)offMax));
5715	#endif
5716	return fAsync;
5717	}
5718
5719
5720	/**
5721	* Determine the GIP TSC mode.
5722	*
5723	* @returns The most suitable TSC mode.
5724	* @param pDevExt Pointer to the device instance data.
5725	*/
5726	static SUPGIPMODE supdrvGipDeterminTscMode(PSUPDRVDEVEXT pDevExt)
5727	{
5728	/*
5729	* On SMP we're faced with two problems:
5730	* (1) There might be a skew between the CPU, so that cpu0
5731	* returns a TSC that is slightly different from cpu1.
5732	* (2) Power management (and other things) may cause the TSC
5733	* to run at a non-constant speed, and cause the speed
5734	* to be different on the cpus. This will result in (1).
5735	*
5736	* So, on SMP systems we'll have to select the ASYNC update method
5737	* if there are symptoms of these problems.
5738	*/
5739	if (RTMpGetCount() > 1)
5740	{
5741	uint32_t uEAX, uEBX, uECX, uEDX;
5742	uint64_t u64DiffCoresIgnored;
5743
5744	/* Permit the user and/or the OS specific bits to force async mode. */
5745	if (supdrvOSGetForcedAsyncTscMode(pDevExt))
5746	return SUPGIPMODE_ASYNC_TSC;
5747
5748	/* Try check for current differences between the cpus. */
5749	if (supdrvDetermineAsyncTsc(&u64DiffCoresIgnored))
5750	return SUPGIPMODE_ASYNC_TSC;
5751
5752	/*
5753	* If the CPU supports power management and is an AMD one we
5754	* won't trust it unless it has the TscInvariant bit is set.
5755	*/
5756	/* Check for "AuthenticAMD" */
5757	ASMCpuId(0, &uEAX, &uEBX, &uECX, &uEDX);
5758	if ( uEAX >= 1
5759	&& ASMIsAmdCpuEx(uEBX, uECX, uEDX))
5760	{
5761	/* Check for APM support and that TscInvariant is cleared. */
5762	ASMCpuId(0x80000000, &uEAX, &uEBX, &uECX, &uEDX);
5763	if (uEAX >= 0x80000007)
5764	{
5765	ASMCpuId(0x80000007, &uEAX, &uEBX, &uECX, &uEDX);
5766	if ( !(uEDX & RT_BIT(8))/* TscInvariant */
5767	&& (uEDX & 0x3e)) /* STC\|TM\|THERMTRIP\|VID\|FID. Ignore TS. */
5768	return SUPGIPMODE_ASYNC_TSC;
5769	}
5770	}
5771	}
5772	return SUPGIPMODE_SYNC_TSC;
5773	}
5774
5775
5776	/**
5777	* Initializes per-CPU GIP information.
5778	*
5779	* @param pGip Pointer to the read-write kernel mapping of the GIP.
5780	* @param pCpu Pointer to which GIP CPU to initalize.
5781	* @param u64NanoTS The current nanosecond timestamp.
5782	*/
5783	static void supdrvGipInitCpu(PSUPGLOBALINFOPAGE pGip, PSUPGIPCPU pCpu, uint64_t u64NanoTS)
5784	{
5785	pCpu->u32TransactionId = 2;
5786	pCpu->u64NanoTS = u64NanoTS;
5787	pCpu->u64TSC = ASMReadTSC();
5788
5789	ASMAtomicWriteSize(&pCpu->enmState, SUPGIPCPUSTATE_INVALID);
5790	ASMAtomicWriteSize(&pCpu->idCpu, NIL_RTCPUID);
5791	ASMAtomicWriteS16(&pCpu->iCpuSet, -1);
5792	ASMAtomicWriteU16(&pCpu->idApic, UINT16_MAX);
5793
5794	/*
5795	* We don't know the following values until we've executed updates.
5796	* So, we'll just pretend it's a 4 GHz CPU and adjust the history it on
5797	* the 2nd timer callout.
5798	*/
5799	pCpu->u64CpuHz = _4G + 1; /* tstGIP-2 depends on this. */
5800	pCpu->u32UpdateIntervalTSC
5801	= pCpu->au32TSCHistory[0]
5802	= pCpu->au32TSCHistory[1]
5803	= pCpu->au32TSCHistory[2]
5804	= pCpu->au32TSCHistory[3]
5805	= pCpu->au32TSCHistory[4]
5806	= pCpu->au32TSCHistory[5]
5807	= pCpu->au32TSCHistory[6]
5808	= pCpu->au32TSCHistory[7]
5809	= (uint32_t)(_4G / pGip->u32UpdateHz);
5810	}
5811
5812
5813	/**
5814	* Initializes the GIP data.
5815	*
5816	* @param pDevExt Pointer to the device instance data.
5817	* @param pGip Pointer to the read-write kernel mapping of the GIP.
5818	* @param HCPhys The physical address of the GIP.
5819	* @param u64NanoTS The current nanosecond timestamp.
5820	* @param uUpdateHz The update frequency.
5821	* @param cCpus The CPU count.
5822	*/
5823	static void supdrvGipInit(PSUPDRVDEVEXT pDevExt, PSUPGLOBALINFOPAGE pGip, RTHCPHYS HCPhys,
5824	uint64_t u64NanoTS, unsigned uUpdateHz, unsigned cCpus)
5825	{
5826	size_t const cbGip = RT_ALIGN_Z(RT_OFFSETOF(SUPGLOBALINFOPAGE, aCPUs[cCpus]), PAGE_SIZE);
5827	unsigned i;
5828	#ifdef DEBUG_DARWIN_GIP
5829	OSDBGPRINT(("supdrvGipInit: pGip=%p HCPhys=%lx u64NanoTS=%llu uUpdateHz=%d cCpus=%u\n", pGip, (long)HCPhys, u64NanoTS, uUpdateHz, cCpus));
5830	#else
5831	LogFlow(("supdrvGipInit: pGip=%p HCPhys=%lx u64NanoTS=%llu uUpdateHz=%d cCpus=%u\n", pGip, (long)HCPhys, u64NanoTS, uUpdateHz, cCpus));
5832	#endif
5833
5834	/*
5835	* Initialize the structure.
5836	*/
5837	memset(pGip, 0, cbGip);
5838	pGip->u32Magic = SUPGLOBALINFOPAGE_MAGIC;
5839	pGip->u32Version = SUPGLOBALINFOPAGE_VERSION;
5840	pGip->u32Mode = supdrvGipDeterminTscMode(pDevExt);
5841	pGip->cCpus = (uint16_t)cCpus;
5842	pGip->cPages = (uint16_t)(cbGip / PAGE_SIZE);
5843	pGip->u32UpdateHz = uUpdateHz;
5844	pGip->u32UpdateIntervalNS = 1000000000 / uUpdateHz;
5845	pGip->u64NanoTSLastUpdateHz = u64NanoTS;
5846	RTCpuSetEmpty(&pGip->OnlineCpuSet);
5847	RTCpuSetEmpty(&pGip->PresentCpuSet);
5848	RTMpGetSet(&pGip->PossibleCpuSet);
5849	pGip->cOnlineCpus = RTMpGetOnlineCount();
5850	pGip->cPresentCpus = RTMpGetPresentCount();
5851	pGip->cPossibleCpus = RTMpGetCount();
5852	pGip->idCpuMax = RTMpGetMaxCpuId();
5853	for (i = 0; i < RT_ELEMENTS(pGip->aiCpuFromApicId); i++)
5854	pGip->aiCpuFromApicId[i] = 0;
5855	for (i = 0; i < RT_ELEMENTS(pGip->aiCpuFromCpuSetIdx); i++)
5856	pGip->aiCpuFromCpuSetIdx[i] = UINT16_MAX;
5857
5858	for (i = 0; i < cCpus; i++)
5859	supdrvGipInitCpu(pGip, &pGip->aCPUs[i], u64NanoTS);
5860
5861	/*
5862	* Link it to the device extension.
5863	*/
5864	pDevExt->pGip = pGip;
5865	pDevExt->HCPhysGip = HCPhys;
5866	pDevExt->cGipUsers = 0;
5867	}
5868
5869
5870	/**
5871	* On CPU initialization callback for RTMpOnAll.
5872	*
5873	* @param idCpu The CPU ID.
5874	* @param pvUser1 The device extension.
5875	* @param pvUser2 The GIP.
5876	*/
5877	static DECLCALLBACK(void) supdrvGipInitOnCpu(RTCPUID idCpu, void pvUser1, void pvUser2)
5878	{
5879	/* This is good enough, even though it will update some of the globals a
5880	bit to much. */
5881	supdrvGipMpEventOnline((PSUPDRVDEVEXT)pvUser1, idCpu);
5882	}
5883
5884
5885	/**
5886	* Invalidates the GIP data upon termination.
5887	*
5888	* @param pGip Pointer to the read-write kernel mapping of the GIP.
5889	*/
5890	static void supdrvGipTerm(PSUPGLOBALINFOPAGE pGip)
5891	{
5892	unsigned i;
5893	pGip->u32Magic = 0;
5894	for (i = 0; i < RT_ELEMENTS(pGip->aCPUs); i++)
5895	{
5896	pGip->aCPUs[i].u64NanoTS = 0;
5897	pGip->aCPUs[i].u64TSC = 0;
5898	pGip->aCPUs[i].iTSCHistoryHead = 0;
5899	}
5900	}
5901
5902
5903	/**
5904	* Worker routine for supdrvGipUpdate and supdrvGipUpdatePerCpu that
5905	* updates all the per cpu data except the transaction id.
5906	*
5907	* @param pDevExt The device extension.
5908	* @param pGipCpu Pointer to the per cpu data.
5909	* @param u64NanoTS The current time stamp.
5910	* @param u64TSC The current TSC.
5911	* @param iTick The current timer tick.
5912	*/
5913	static void supdrvGipDoUpdateCpu(PSUPDRVDEVEXT pDevExt, PSUPGIPCPU pGipCpu, uint64_t u64NanoTS, uint64_t u64TSC, uint64_t iTick)
5914	{
5915	uint64_t u64TSCDelta;
5916	uint32_t u32UpdateIntervalTSC;
5917	uint32_t u32UpdateIntervalTSCSlack;
5918	unsigned iTSCHistoryHead;
5919	uint64_t u64CpuHz;
5920	uint32_t u32TransactionId;
5921
5922	PSUPGLOBALINFOPAGE pGip = pDevExt->pGip;
5923	AssertPtrReturnVoid(pGip);
5924
5925	/* Delta between this and the previous update. */
5926	ASMAtomicUoWriteU32(&pGipCpu->u32PrevUpdateIntervalNS, (uint32_t)(u64NanoTS - pGipCpu->u64NanoTS));
5927
5928	/*
5929	* Update the NanoTS.
5930	*/
5931	ASMAtomicWriteU64(&pGipCpu->u64NanoTS, u64NanoTS);
5932
5933	/*
5934	* Calc TSC delta.
5935	*/
5936	/** @todo validate the NanoTS delta, don't trust the OS to call us when it should... */
5937	u64TSCDelta = u64TSC - pGipCpu->u64TSC;
5938	ASMAtomicWriteU64(&pGipCpu->u64TSC, u64TSC);
5939
5940	if (u64TSCDelta >> 32)
5941	{
5942	u64TSCDelta = pGipCpu->u32UpdateIntervalTSC;
5943	pGipCpu->cErrors++;
5944	}
5945
5946	/*
5947	* On the 2nd and 3rd callout, reset the history with the current TSC
5948	* interval since the values entered by supdrvGipInit are totally off.
5949	* The interval on the 1st callout completely unreliable, the 2nd is a bit
5950	* better, while the 3rd should be most reliable.
5951	*/
5952	u32TransactionId = pGipCpu->u32TransactionId;
5953	if (RT_UNLIKELY( ( u32TransactionId == 5
5954	\|\| u32TransactionId == 7)
5955	&& ( iTick == 2
5956	\|\| iTick == 3) ))
5957	{
5958	unsigned i;
5959	for (i = 0; i < RT_ELEMENTS(pGipCpu->au32TSCHistory); i++)
5960	ASMAtomicUoWriteU32(&pGipCpu->au32TSCHistory[i], (uint32_t)u64TSCDelta);
5961	}
5962
5963	/*
5964	* TSC History.
5965	*/
5966	Assert(RT_ELEMENTS(pGipCpu->au32TSCHistory) == 8);
5967	iTSCHistoryHead = (pGipCpu->iTSCHistoryHead + 1) & 7;
5968	ASMAtomicWriteU32(&pGipCpu->iTSCHistoryHead, iTSCHistoryHead);
5969	ASMAtomicWriteU32(&pGipCpu->au32TSCHistory[iTSCHistoryHead], (uint32_t)u64TSCDelta);
5970
5971	/*
5972	* UpdateIntervalTSC = average of last 8,2,1 intervals depending on update HZ.
5973	*/
5974	if (pGip->u32UpdateHz >= 1000)
5975	{
5976	uint32_t u32;
5977	u32 = pGipCpu->au32TSCHistory[0];
5978	u32 += pGipCpu->au32TSCHistory[1];
5979	u32 += pGipCpu->au32TSCHistory[2];
5980	u32 += pGipCpu->au32TSCHistory[3];
5981	u32 >>= 2;
5982	u32UpdateIntervalTSC = pGipCpu->au32TSCHistory[4];
5983	u32UpdateIntervalTSC += pGipCpu->au32TSCHistory[5];
5984	u32UpdateIntervalTSC += pGipCpu->au32TSCHistory[6];
5985	u32UpdateIntervalTSC += pGipCpu->au32TSCHistory[7];
5986	u32UpdateIntervalTSC >>= 2;
5987	u32UpdateIntervalTSC += u32;
5988	u32UpdateIntervalTSC >>= 1;
5989
5990	/* Value chosen for a 2GHz Athlon64 running linux 2.6.10/11, . */
5991	u32UpdateIntervalTSCSlack = u32UpdateIntervalTSC >> 14;
5992	}
5993	else if (pGip->u32UpdateHz >= 90)
5994	{
5995	u32UpdateIntervalTSC = (uint32_t)u64TSCDelta;
5996	u32UpdateIntervalTSC += pGipCpu->au32TSCHistory[(iTSCHistoryHead - 1) & 7];
5997	u32UpdateIntervalTSC >>= 1;
5998
5999	/* value chosen on a 2GHz thinkpad running windows */
6000	u32UpdateIntervalTSCSlack = u32UpdateIntervalTSC >> 7;
6001	}
6002	else
6003	{
6004	u32UpdateIntervalTSC = (uint32_t)u64TSCDelta;
6005
6006	/* This value hasn't be checked yet.. waiting for OS/2 and 33Hz timers.. :-) */
6007	u32UpdateIntervalTSCSlack = u32UpdateIntervalTSC >> 6;
6008	}
6009	ASMAtomicWriteU32(&pGipCpu->u32UpdateIntervalTSC, u32UpdateIntervalTSC + u32UpdateIntervalTSCSlack);
6010
6011	/*
6012	* CpuHz.
6013	*/
6014	u64CpuHz = ASMMult2xU32RetU64(u32UpdateIntervalTSC, pGip->u32UpdateHz);
6015	ASMAtomicWriteU64(&pGipCpu->u64CpuHz, u64CpuHz);
6016	}
6017
6018
6019	/**
6020	* Updates the GIP.
6021	*
6022	* @param pDevExt The device extension.
6023	* @param u64NanoTS The current nanosecond timesamp.
6024	* @param u64TSC The current TSC timesamp.
6025	* @param idCpu The CPU ID.
6026	* @param iTick The current timer tick.
6027	*/
6028	static void supdrvGipUpdate(PSUPDRVDEVEXT pDevExt, uint64_t u64NanoTS, uint64_t u64TSC, RTCPUID idCpu, uint64_t iTick)
6029	{
6030	/*
6031	* Determine the relevant CPU data.
6032	*/
6033	PSUPGIPCPU pGipCpu;
6034	PSUPGLOBALINFOPAGE pGip = pDevExt->pGip;
6035	AssertPtrReturnVoid(pGip);
6036
6037	if (pGip->u32Mode != SUPGIPMODE_ASYNC_TSC)
6038	pGipCpu = &pGip->aCPUs[0];
6039	else
6040	{
6041	unsigned iCpu = pGip->aiCpuFromApicId[ASMGetApicId()];
6042	if (RT_UNLIKELY(iCpu >= pGip->cCpus))
6043	return;
6044	pGipCpu = &pGip->aCPUs[iCpu];
6045	if (RT_UNLIKELY(pGipCpu->idCpu != idCpu))
6046	return;
6047	}
6048
6049	/*
6050	* Start update transaction.
6051	*/
6052	if (!(ASMAtomicIncU32(&pGipCpu->u32TransactionId) & 1))
6053	{
6054	/* this can happen on win32 if we're taking to long and there are more CPUs around. shouldn't happen though. */
6055	AssertMsgFailed(("Invalid transaction id, %#x, not odd!\n", pGipCpu->u32TransactionId));
6056	ASMAtomicIncU32(&pGipCpu->u32TransactionId);
6057	pGipCpu->cErrors++;
6058	return;
6059	}
6060
6061	/*
6062	* Recalc the update frequency every 0x800th time.
6063	*/
6064	if (!(pGipCpu->u32TransactionId & (GIP_UPDATEHZ_RECALC_FREQ * 2 - 2)))
6065	{
6066	if (pGip->u64NanoTSLastUpdateHz)
6067	{
6068	#ifdef RT_ARCH_AMD64 /** @todo fix 64-bit div here to work on x86 linux. */
6069	uint64_t u64Delta = u64NanoTS - pGip->u64NanoTSLastUpdateHz;
6070	uint32_t u32UpdateHz = (uint32_t)((UINT64_C(1000000000) * GIP_UPDATEHZ_RECALC_FREQ) / u64Delta);
6071	if (u32UpdateHz <= 2000 && u32UpdateHz >= 30)
6072	{
6073	ASMAtomicWriteU32(&pGip->u32UpdateHz, u32UpdateHz);
6074	ASMAtomicWriteU32(&pGip->u32UpdateIntervalNS, 1000000000 / u32UpdateHz);
6075	}
6076	#endif
6077	}
6078	ASMAtomicWriteU64(&pGip->u64NanoTSLastUpdateHz, u64NanoTS);
6079	}
6080
6081	/*
6082	* Update the data.
6083	*/
6084	supdrvGipDoUpdateCpu(pDevExt, pGipCpu, u64NanoTS, u64TSC, iTick);
6085
6086	/*
6087	* Complete transaction.
6088	*/
6089	ASMAtomicIncU32(&pGipCpu->u32TransactionId);
6090	}
6091
6092
6093	/**
6094	* Updates the per cpu GIP data for the calling cpu.
6095	*
6096	* @param pDevExt The device extension.
6097	* @param u64NanoTS The current nanosecond timesamp.
6098	* @param u64TSC The current TSC timesamp.
6099	* @param idCpu The CPU ID.
6100	* @param idApic The APIC id for the CPU index.
6101	* @param iTick The current timer tick.
6102	*/
6103	static void supdrvGipUpdatePerCpu(PSUPDRVDEVEXT pDevExt, uint64_t u64NanoTS, uint64_t u64TSC,
6104	RTCPUID idCpu, uint8_t idApic, uint64_t iTick)
6105	{
6106	uint32_t iCpu;
6107	PSUPGLOBALINFOPAGE pGip = pDevExt->pGip;
6108
6109	/*
6110	* Avoid a potential race when a CPU online notification doesn't fire on
6111	* the onlined CPU but the tick creeps in before the event notification is
6112	* run.
6113	*/
6114	if (RT_UNLIKELY(iTick == 1))
6115	{
6116	iCpu = supdrvGipCpuIndexFromCpuId(pGip, idCpu);
6117	if (pGip->aCPUs[iCpu].enmState == SUPGIPCPUSTATE_OFFLINE)
6118	supdrvGipMpEventOnline(pDevExt, idCpu);
6119	}
6120
6121	iCpu = pGip->aiCpuFromApicId[idApic];
6122	if (RT_LIKELY(iCpu < pGip->cCpus))
6123	{
6124	PSUPGIPCPU pGipCpu = &pGip->aCPUs[iCpu];
6125	if (pGipCpu->idCpu == idCpu)
6126	{
6127	/*
6128	* Start update transaction.
6129	*/
6130	if (!(ASMAtomicIncU32(&pGipCpu->u32TransactionId) & 1))
6131	{
6132	AssertMsgFailed(("Invalid transaction id, %#x, not odd!\n", pGipCpu->u32TransactionId));
6133	ASMAtomicIncU32(&pGipCpu->u32TransactionId);
6134	pGipCpu->cErrors++;
6135	return;
6136	}
6137
6138	/*
6139	* Update the data.
6140	*/
6141	supdrvGipDoUpdateCpu(pDevExt, pGipCpu, u64NanoTS, u64TSC, iTick);
6142
6143	/*
6144	* Complete transaction.
6145	*/
6146	ASMAtomicIncU32(&pGipCpu->u32TransactionId);
6147	}
6148	}
6149	}
6150
6151	/**
6152	* Resume built-in keyboard on MacBook Air and Pro hosts.
6153	* If there is no built-in keyboard device, return success anyway.
6154	*
6155	* @returns 0 on Mac OS X platform, VERR_NOT_IMPLEMENTED on the other ones.
6156	*/
6157	static int supdrvIOCtl_ResumeBuiltinKbd(void)
6158	{
6159	#if defined(RT_OS_DARWIN)
6160	return supdrvDarwinResumeBuiltinKbd();
6161	#else
6162	return VERR_NOT_IMPLEMENTED;
6163	#endif
6164	}
6165

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source: vbox/trunk/src/VBox/HostDrivers/Support/SUPDrv.c@ 49787

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