VirtualBox

source: vbox/trunk/src/VBox/HostDrivers/Support/SUPDrvInternal.h@ 18478

Last change on this file since 18478 was 17064, checked in by vboxsync, 16 years ago

Linux hostdrivers: removed Linux 2.4.x compatibility
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1/* $Revision: 17064 $ */
2/** @file
3 * VirtualBox Support Driver - Internal header.
4 */
5
6/*
7 * Copyright (C) 2006-2007 Sun Microsystems, Inc.
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
27 * Clara, CA 95054 USA or visit http://www.sun.com if you need
28 * additional information or have any questions.
29 */
30
31#ifndef ___SUPDrvInternal_h
32#define ___SUPDrvInternal_h
33
34
35/*******************************************************************************
36* Header Files *
37*******************************************************************************/
38#include <VBox/cdefs.h>
39#include <VBox/types.h>
40#include <iprt/assert.h>
41#include <iprt/asm.h>
42#include <VBox/sup.h>
43#include <iprt/memobj.h>
44#include <iprt/time.h>
45#include <iprt/timer.h>
46#include <iprt/string.h>
47#include <iprt/err.h>
48
49
50#if defined(RT_OS_WINDOWS)
51 __BEGIN_DECLS
52# if (_MSC_VER >= 1400) && !defined(VBOX_WITH_PATCHED_DDK)
53# define _InterlockedExchange _InterlockedExchange_StupidDDKVsCompilerCrap
54# define _InterlockedExchangeAdd _InterlockedExchangeAdd_StupidDDKVsCompilerCrap
55# define _InterlockedCompareExchange _InterlockedCompareExchange_StupidDDKVsCompilerCrap
56# define _InterlockedAddLargeStatistic _InterlockedAddLargeStatistic_StupidDDKVsCompilerCrap
57# define _interlockedbittestandset _interlockedbittestandset_StupidDDKVsCompilerCrap
58# define _interlockedbittestandreset _interlockedbittestandreset_StupidDDKVsCompilerCrap
59# define _interlockedbittestandset64 _interlockedbittestandset64_StupidDDKVsCompilerCrap
60# define _interlockedbittestandreset64 _interlockedbittestandreset64_StupidDDKVsCompilerCrap
61# include <ntddk.h>
62# undef _InterlockedExchange
63# undef _InterlockedExchangeAdd
64# undef _InterlockedCompareExchange
65# undef _InterlockedAddLargeStatistic
66# undef _interlockedbittestandset
67# undef _interlockedbittestandreset
68# undef _interlockedbittestandset64
69# undef _interlockedbittestandreset64
70# else
71# include <ntddk.h>
72# endif
73# include <memory.h>
74# define memcmp(a,b,c) mymemcmp(a,b,c)
75 int VBOXCALL mymemcmp(const void *, const void *, size_t);
76 __END_DECLS
77
78#elif defined(RT_OS_LINUX)
79# include <linux/autoconf.h>
80# include <linux/version.h>
81# if defined(CONFIG_MODVERSIONS) && !defined(MODVERSIONS)
82# define MODVERSIONS
83# if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 71)
84# include <linux/modversions.h>
85# endif
86# endif
87# if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 0)
88# undef ALIGN
89# endif
90# ifndef KBUILD_STR
91# if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 16)
92# define KBUILD_STR(s) s
93# else
94# define KBUILD_STR(s) #s
95# endif
96# endif
97# include <linux/string.h>
98# include <linux/spinlock.h>
99# include <linux/slab.h>
100# if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)
101# include <linux/semaphore.h>
102# else /* older kernels */
103# include <asm/semaphore.h>
104# endif /* older kernels */
105# include <linux/timer.h>
106
107# if 0
108# include <linux/hrtimer.h>
109# define VBOX_HRTIMER
110# endif
111
112#elif defined(RT_OS_DARWIN)
113# include <libkern/libkern.h>
114# include <iprt/string.h>
115
116#elif defined(RT_OS_OS2)
117
118#elif defined(RT_OS_FREEBSD)
119# define memset libkern_memset /** @todo these are just hacks to get it compiling, check out later. */
120# define memcmp libkern_memcmp
121# define strchr libkern_strchr
122# define strrchr libkern_strrchr
123# define ffs libkern_ffs
124# define ffsl libkern_ffsl
125# define fls libkern_fls
126# define flsl libkern_flsl
127# include <sys/libkern.h>
128# undef memset
129# undef memcmp
130# undef strchr
131# undef strrchr
132# undef ffs
133# undef ffsl
134# undef fls
135# undef flsl
136# include <iprt/string.h>
137
138#elif defined(RT_OS_SOLARIS)
139# include <sys/cmn_err.h>
140# include <iprt/string.h>
141
142#else
143# error "unsupported OS."
144#endif
145
146#include "SUPDrvIOC.h"
147#include "SUPDrvIDC.h"
148
149
150
151/*******************************************************************************
152* Defined Constants And Macros *
153*******************************************************************************/
154/*
155 * Hardcoded cookies.
156 */
157#define BIRD 0x64726962 /* 'bird' */
158#define BIRD_INV 0x62697264 /* 'drib' */
159
160
161/*
162 * Win32
163 */
164#if defined(RT_OS_WINDOWS)
165
166/* debug printf */
167# define OSDBGPRINT(a) DbgPrint a
168
169/** Maximum number of bytes we try to lock down in one go.
170 * This is supposed to have a limit right below 256MB, but this appears
171 * to actually be much lower. The values here have been determined experimentally.
172 */
173#ifdef RT_ARCH_X86
174# define MAX_LOCK_MEM_SIZE (32*1024*1024) /* 32mb */
175#endif
176#ifdef RT_ARCH_AMD64
177# define MAX_LOCK_MEM_SIZE (24*1024*1024) /* 24mb */
178#endif
179
180
181/*
182 * Linux
183 */
184#elif defined(RT_OS_LINUX)
185
186/* check kernel version */
187#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 0)
188# error Unsupported kernel version!
189#endif
190
191__BEGIN_DECLS
192int linux_dprintf(const char *format, ...);
193__END_DECLS
194
195/* debug printf */
196# define OSDBGPRINT(a) printk a
197
198
199/*
200 * Darwin
201 */
202#elif defined(RT_OS_DARWIN)
203
204/* debug printf */
205# define OSDBGPRINT(a) printf a
206
207
208/*
209 * OS/2
210 */
211#elif defined(RT_OS_OS2)
212
213/* No log API in OS/2 only COM port. */
214# define OSDBGPRINT(a) SUPR0Printf a
215
216
217/*
218 * FreeBSD
219 */
220#elif defined(RT_OS_FREEBSD)
221
222/* debug printf */
223# define OSDBGPRINT(a) printf a
224
225
226/*
227 * Solaris
228 */
229#elif defined(RT_OS_SOLARIS)
230# define OSDBGPRINT(a) SUPR0Printf a
231
232
233#else
234/** @todo other os'es */
235# error "OS interface defines is not done for this OS!"
236#endif
237
238
239/* dprintf */
240#if (defined(DEBUG) && !defined(NO_LOGGING)) || defined(RT_OS_FREEBSD)
241# ifdef LOG_TO_COM
242# include <VBox/log.h>
243# define dprintf(a) RTLogComPrintf a
244# else
245# define dprintf(a) OSDBGPRINT(a)
246# endif
247#else
248# define dprintf(a) do {} while (0)
249#endif
250
251/* dprintf2 - extended logging. */
252#if defined(RT_OS_DARWIN) || defined(RT_OS_OS2) || defined(RT_OS_FREEBSD)
253# define dprintf2 dprintf
254#else
255# define dprintf2(a) do { } while (0)
256#endif
257
258
259/** @def RT_WITH_W64_UNWIND_HACK
260 * Changes a function name into the wrapped version if we've
261 * enabled the unwind hack.
262 *
263 * The unwind hack is for making the NT unwind procedures skip
264 * our dynamically loaded code when they try to walk the call
265 * stack. Needless to say, they kind of don't expect what
266 * we're doing here and get kind of confused and may BSOD. */
267#ifdef DOXYGEN_RUNNING
268# define RT_WITH_W64_UNWIND_HACK
269#endif
270/** @def UNWIND_WRAP
271 * If RT_WITH_W64_UNWIND_HACK is defined, the name will be prefixed with
272 * 'supdrvNtWrap'.
273 * @param Name The function to wrapper. */
274#ifdef RT_WITH_W64_UNWIND_HACK
275# define UNWIND_WRAP(Name) supdrvNtWrap##Name
276#else
277# define UNWIND_WRAP(Name) Name
278#endif
279
280
281/*
282 * Error codes.
283 */
284/** @todo retire the SUPDRV_ERR_* stuff, we ship err.h now. */
285/** Invalid parameter. */
286#define SUPDRV_ERR_GENERAL_FAILURE (-1)
287/** Invalid parameter. */
288#define SUPDRV_ERR_INVALID_PARAM (-2)
289/** Invalid magic or cookie. */
290#define SUPDRV_ERR_INVALID_MAGIC (-3)
291/** Invalid loader handle. */
292#define SUPDRV_ERR_INVALID_HANDLE (-4)
293/** Failed to lock the address range. */
294#define SUPDRV_ERR_LOCK_FAILED (-5)
295/** Invalid memory pointer. */
296#define SUPDRV_ERR_INVALID_POINTER (-6)
297/** Failed to patch the IDT. */
298#define SUPDRV_ERR_IDT_FAILED (-7)
299/** Memory allocation failed. */
300#define SUPDRV_ERR_NO_MEMORY (-8)
301/** Already loaded. */
302#define SUPDRV_ERR_ALREADY_LOADED (-9)
303/** Permission denied. */
304#define SUPDRV_ERR_PERMISSION_DENIED (-10)
305/** Version mismatch. */
306#define SUPDRV_ERR_VERSION_MISMATCH (-11)
307
308
309
310/*******************************************************************************
311* Structures and Typedefs *
312*******************************************************************************/
313/** Pointer to the device extension. */
314typedef struct SUPDRVDEVEXT *PSUPDRVDEVEXT;
315
316
317/**
318 * Memory reference types.
319 */
320typedef enum
321{
322 /** Unused entry */
323 MEMREF_TYPE_UNUSED = 0,
324 /** Locked memory (r3 mapping only). */
325 MEMREF_TYPE_LOCKED,
326 /** Continous memory block (r3 and r0 mapping). */
327 MEMREF_TYPE_CONT,
328 /** Low memory block (r3 and r0 mapping). */
329 MEMREF_TYPE_LOW,
330 /** Memory block (r3 and r0 mapping). */
331 MEMREF_TYPE_MEM,
332 /** Locked memory (r3 mapping only) allocated by the support driver. */
333 MEMREF_TYPE_PAGE,
334 /** Blow the type up to 32-bit and mark the end. */
335 MEMREG_TYPE_32BIT_HACK = 0x7fffffff
336} SUPDRVMEMREFTYPE, *PSUPDRVMEMREFTYPE;
337
338
339/**
340 * Structure used for tracking memory a session
341 * references in one way or another.
342 */
343typedef struct SUPDRVMEMREF
344{
345 /** The memory object handle. */
346 RTR0MEMOBJ MemObj;
347 /** The ring-3 mapping memory object handle. */
348 RTR0MEMOBJ MapObjR3;
349 /** Type of memory. */
350 SUPDRVMEMREFTYPE eType;
351} SUPDRVMEMREF, *PSUPDRVMEMREF;
352
353
354/**
355 * Bundle of locked memory ranges.
356 */
357typedef struct SUPDRVBUNDLE
358{
359 /** Pointer to the next bundle. */
360 struct SUPDRVBUNDLE * volatile pNext;
361 /** Referenced memory. */
362 SUPDRVMEMREF aMem[64];
363 /** Number of entries used. */
364 uint32_t volatile cUsed;
365} SUPDRVBUNDLE, *PSUPDRVBUNDLE;
366
367
368/**
369 * Loaded image.
370 */
371typedef struct SUPDRVLDRIMAGE
372{
373 /** Next in chain. */
374 struct SUPDRVLDRIMAGE * volatile pNext;
375 /** Pointer to the image. */
376 void *pvImage;
377 /** Pointer to the optional module initialization callback. */
378 PFNR0MODULEINIT pfnModuleInit;
379 /** Pointer to the optional module termination callback. */
380 PFNR0MODULETERM pfnModuleTerm;
381 /** Service request handler. This is NULL for non-service modules. */
382 PFNSUPR0SERVICEREQHANDLER pfnServiceReqHandler;
383 /** Size of the image. */
384 uint32_t cbImage;
385 /** The offset of the symbol table. */
386 uint32_t offSymbols;
387 /** The number of entries in the symbol table. */
388 uint32_t cSymbols;
389 /** The offset of the string table. */
390 uint32_t offStrTab;
391 /** Size of the string table. */
392 uint32_t cbStrTab;
393 /** The ldr image state. (IOCtl code of last opration.) */
394 uint32_t uState;
395 /** Usage count. */
396 uint32_t volatile cUsage;
397 /** Image name. */
398 char szName[32];
399} SUPDRVLDRIMAGE, *PSUPDRVLDRIMAGE;
400
401
402/** Image usage record. */
403typedef struct SUPDRVLDRUSAGE
404{
405 /** Next in chain. */
406 struct SUPDRVLDRUSAGE * volatile pNext;
407 /** The image. */
408 PSUPDRVLDRIMAGE pImage;
409 /** Load count. */
410 uint32_t volatile cUsage;
411} SUPDRVLDRUSAGE, *PSUPDRVLDRUSAGE;
412
413
414/**
415 * Component factory registration record.
416 */
417typedef struct SUPDRVFACTORYREG
418{
419 /** Pointer to the next registration. */
420 struct SUPDRVFACTORYREG *pNext;
421 /** Pointer to the registered factory. */
422 PCSUPDRVFACTORY pFactory;
423 /** The session owning the factory.
424 * Used for deregistration and session cleanup. */
425 PSUPDRVSESSION pSession;
426 /** Length of the name. */
427 size_t cchName;
428} SUPDRVFACTORYREG;
429/** Pointer to a component factory registration record. */
430typedef SUPDRVFACTORYREG *PSUPDRVFACTORYREG;
431/** Pointer to a const component factory registration record. */
432typedef SUPDRVFACTORYREG const *PCSUPDRVFACTORYREG;
433
434
435/**
436 * Registered object.
437 * This takes care of reference counting and tracking data for access checks.
438 */
439typedef struct SUPDRVOBJ
440{
441 /** Magic value (SUPDRVOBJ_MAGIC). */
442 uint32_t u32Magic;
443 /** The object type. */
444 SUPDRVOBJTYPE enmType;
445 /** Pointer to the next in the global list. */
446 struct SUPDRVOBJ * volatile pNext;
447 /** Pointer to the object destructor.
448 * This may be set to NULL if the image containing the destructor get unloaded. */
449 PFNSUPDRVDESTRUCTOR pfnDestructor;
450 /** User argument 1. */
451 void *pvUser1;
452 /** User argument 2. */
453 void *pvUser2;
454 /** The total sum of all per-session usage. */
455 uint32_t volatile cUsage;
456 /** The creator user id. */
457 RTUID CreatorUid;
458 /** The creator group id. */
459 RTGID CreatorGid;
460 /** The creator process id. */
461 RTPROCESS CreatorProcess;
462} SUPDRVOBJ, *PSUPDRVOBJ;
463
464/** Magic number for SUPDRVOBJ::u32Magic. (Dame Agatha Mary Clarissa Christie). */
465#define SUPDRVOBJ_MAGIC 0x18900915
466/** Dead number magic for SUPDRVOBJ::u32Magic. */
467#define SUPDRVOBJ_MAGIC_DEAD 0x19760112
468
469/**
470 * The per-session object usage record.
471 */
472typedef struct SUPDRVUSAGE
473{
474 /** Pointer to the next in the list. */
475 struct SUPDRVUSAGE * volatile pNext;
476 /** Pointer to the object we're recording usage for. */
477 PSUPDRVOBJ pObj;
478 /** The usage count. */
479 uint32_t volatile cUsage;
480} SUPDRVUSAGE, *PSUPDRVUSAGE;
481
482
483/**
484 * Per session data.
485 * This is mainly for memory tracking.
486 */
487typedef struct SUPDRVSESSION
488{
489 /** Pointer to the device extension. */
490 PSUPDRVDEVEXT pDevExt;
491 /** Session Cookie. */
492 uint32_t u32Cookie;
493
494 /** Load usage records. (protected by SUPDRVDEVEXT::mtxLdr) */
495 PSUPDRVLDRUSAGE volatile pLdrUsage;
496 /** The VM associated with the session. */
497 PVM pVM;
498 /** List of generic usage records. (protected by SUPDRVDEVEXT::SpinLock) */
499 PSUPDRVUSAGE volatile pUsage;
500
501 /** Spinlock protecting the bundles and the GIP members. */
502 RTSPINLOCK Spinlock;
503 /** The ring-3 mapping of the GIP (readonly). */
504 RTR0MEMOBJ GipMapObjR3;
505 /** Set if the session is using the GIP. */
506 uint32_t fGipReferenced;
507 /** Bundle of locked memory objects. */
508 SUPDRVBUNDLE Bundle;
509
510 /** The user id of the session. (Set by the OS part.) */
511 RTUID Uid;
512 /** The group id of the session. (Set by the OS part.) */
513 RTGID Gid;
514 /** The process (id) of the session. */
515 RTPROCESS Process;
516 /** Which process this session is associated with.
517 * This is NIL_RTR0PROCESS for kernel sessions and valid for user ones. */
518 RTR0PROCESS R0Process;
519#if defined(RT_OS_DARWIN)
520 /** Pointer to the associated org_virtualbox_SupDrvClient object. */
521 void *pvSupDrvClient;
522 /** Whether this session has been opened or not. */
523 bool fOpened;
524#endif
525#if defined(RT_OS_OS2)
526 /** The system file number of this session. */
527 uint16_t sfn;
528 uint16_t Alignment; /**< Alignment */
529#endif
530#if defined(RT_OS_DARWIN) || defined(RT_OS_OS2) || defined(RT_OS_SOLARIS)
531 /** Pointer to the next session with the same hash. */
532 PSUPDRVSESSION pNextHash;
533#endif
534} SUPDRVSESSION;
535
536
537/**
538 * Device extension.
539 */
540typedef struct SUPDRVDEVEXT
541{
542 /** Spinlock to serialize the initialization,
543 * usage counting and destruction of the IDT entry override and objects. */
544 RTSPINLOCK Spinlock;
545
546 /** List of registered objects. Protected by the spinlock. */
547 PSUPDRVOBJ volatile pObjs;
548 /** List of free object usage records. */
549 PSUPDRVUSAGE volatile pUsageFree;
550
551 /** Global cookie. */
552 uint32_t u32Cookie;
553
554 /** The IDT entry number.
555 * Only valid if pIdtPatches is set. */
556 uint8_t volatile u8Idt;
557
558 /** Loader mutex.
559 * This protects pvVMMR0, pvVMMR0Entry, pImages and SUPDRVSESSION::pLdrUsage. */
560 RTSEMFASTMUTEX mtxLdr;
561
562 /** VMM Module 'handle'.
563 * 0 if the code VMM isn't loaded and Idt are nops. */
564 void * volatile pvVMMR0;
565 /** VMMR0EntryInt() pointer. */
566 DECLR0CALLBACKMEMBER(int, pfnVMMR0EntryInt, (PVM pVM, unsigned uOperation, void *pvArg));
567 /** VMMR0EntryFast() pointer. */
568 DECLR0CALLBACKMEMBER(void, pfnVMMR0EntryFast, (PVM pVM, unsigned idCpu, unsigned uOperation));
569 /** VMMR0EntryEx() pointer. */
570 DECLR0CALLBACKMEMBER(int, pfnVMMR0EntryEx, (PVM pVM, unsigned uOperation, PSUPVMMR0REQHDR pReq, uint64_t u64Arg, PSUPDRVSESSION pSession));
571
572 /** Linked list of loaded code. */
573 PSUPDRVLDRIMAGE volatile pLdrImages;
574
575 /** GIP mutex.
576 * Any changes to any of the GIP members requires ownership of this mutex,
577 * except on driver init and termination. */
578 RTSEMFASTMUTEX mtxGip;
579 /** Pointer to the Global Info Page (GIP). */
580 PSUPGLOBALINFOPAGE pGip;
581 /** The physical address of the GIP. */
582 RTHCPHYS HCPhysGip;
583 /** Number of processes using the GIP.
584 * (The updates are suspend while cGipUsers is 0.)*/
585 uint32_t volatile cGipUsers;
586 /** The ring-0 memory object handle for the GIP page. */
587 RTR0MEMOBJ GipMemObj;
588 /** The GIP timer handle. */
589 PRTTIMER pGipTimer;
590 /** If non-zero we've successfully called RTTimerRequestSystemGranularity(). */
591 uint32_t u32SystemTimerGranularityGrant;
592 /** The CPU id of the GIP master.
593 * This CPU is responsible for the updating the common GIP data. */
594 RTCPUID volatile idGipMaster;
595
596#ifdef RT_OS_WINDOWS
597 /* Callback object returned by ExCreateCallback. */
598 PCALLBACK_OBJECT pObjPowerCallback;
599 /* Callback handle returned by ExRegisterCallback. */
600 PVOID hPowerCallback;
601#endif
602
603 /** Component factory mutex.
604 * This protects pComponentFactoryHead and component factory querying. */
605 RTSEMFASTMUTEX mtxComponentFactory;
606 /** The head of the list of registered component factories. */
607 PSUPDRVFACTORYREG pComponentFactoryHead;
608} SUPDRVDEVEXT;
609
610
611__BEGIN_DECLS
612
613/*******************************************************************************
614* OS Specific Functions *
615*******************************************************************************/
616void VBOXCALL supdrvOSObjInitCreator(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession);
617bool VBOXCALL supdrvOSObjCanAccess(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession, const char *pszObjName, int *prc);
618bool VBOXCALL supdrvOSGetForcedAsyncTscMode(PSUPDRVDEVEXT pDevExt);
619int VBOXCALL supdrvOSEnableVTx(bool fEnabled);
620
621/*******************************************************************************
622* Shared Functions *
623*******************************************************************************/
624int VBOXCALL supdrvIOCtl(uintptr_t uIOCtl, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPREQHDR pReqHdr);
625int VBOXCALL supdrvIOCtlFast(uintptr_t uIOCtl, unsigned idCpu, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession);
626int VBOXCALL supdrvIDC(uintptr_t uIOCtl, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPDRVIDCREQHDR pReqHdr);
627int VBOXCALL supdrvInitDevExt(PSUPDRVDEVEXT pDevExt);
628void VBOXCALL supdrvDeleteDevExt(PSUPDRVDEVEXT pDevExt);
629int VBOXCALL supdrvCreateSession(PSUPDRVDEVEXT pDevExt, bool fUser, PSUPDRVSESSION *ppSession);
630void VBOXCALL supdrvCloseSession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession);
631void VBOXCALL supdrvCleanupSession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession);
632int VBOXCALL supdrvGipInit(PSUPDRVDEVEXT pDevExt, PSUPGLOBALINFOPAGE pGip, RTHCPHYS HCPhys, uint64_t u64NanoTS, unsigned uUpdateHz);
633void VBOXCALL supdrvGipTerm(PSUPGLOBALINFOPAGE pGip);
634void VBOXCALL supdrvGipUpdate(PSUPGLOBALINFOPAGE pGip, uint64_t u64NanoTS);
635void VBOXCALL supdrvGipUpdatePerCpu(PSUPGLOBALINFOPAGE pGip, uint64_t u64NanoTS, unsigned iCpu);
636bool VBOXCALL supdrvDetermineAsyncTsc(uint64_t *pu64DiffCores);
637
638__END_DECLS
639
640#endif
641
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