VirtualBox

source: vbox/trunk/src/VBox/HostDrivers/Support/SUPDRV.h@ 10252

Last change on this file since 10252 was 10252, checked in by vboxsync, 16 years ago

Missed the VBOXKTIMER stuff for linux in the cleanup just now.
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File size: 20.2 KB
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1/* $Revision: 10252 $ */
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 ___SUPDRV_h
32#define ___SUPDRV_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# include <asm/semaphore.h>
101# include <linux/timer.h>
102
103# if 0
104# include <linux/hrtimer.h>
105# define VBOX_HRTIMER
106# endif
107
108#elif defined(RT_OS_DARWIN)
109# include <libkern/libkern.h>
110# include <iprt/string.h>
111
112#elif defined(RT_OS_OS2)
113
114#elif defined(RT_OS_FREEBSD)
115# include <sys/libkern.h>
116# include <iprt/string.h>
117
118#elif defined(RT_OS_SOLARIS)
119# include <sys/cmn_err.h>
120# include <iprt/string.h>
121
122#else
123# error "unsupported OS."
124#endif
125
126#include "SUPDRVIOC.h"
127
128
129
130/*******************************************************************************
131* Defined Constants And Macros *
132*******************************************************************************/
133/*
134 * Hardcoded cookies.
135 */
136#define BIRD 0x64726962 /* 'bird' */
137#define BIRD_INV 0x62697264 /* 'drib' */
138
139
140/*
141 * Win32
142 */
143#if defined(RT_OS_WINDOWS)
144
145/* debug printf */
146# define OSDBGPRINT(a) DbgPrint a
147
148/** Maximum number of bytes we try to lock down in one go.
149 * This is supposed to have a limit right below 256MB, but this appears
150 * to actually be much lower. The values here have been determined experimentally.
151 */
152#ifdef RT_ARCH_X86
153# define MAX_LOCK_MEM_SIZE (32*1024*1024) /* 32mb */
154#endif
155#ifdef RT_ARCH_AMD64
156# define MAX_LOCK_MEM_SIZE (24*1024*1024) /* 24mb */
157#endif
158
159
160/*
161 * Linux
162 */
163#elif defined(RT_OS_LINUX)
164
165/* check kernel version */
166#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 4, 0)
167# error Unsupported kernel version!
168#endif
169
170__BEGIN_DECLS
171int linux_dprintf(const char *format, ...);
172__END_DECLS
173
174/* debug printf */
175# define OSDBGPRINT(a) printk a
176
177
178/*
179 * Darwin
180 */
181#elif defined(RT_OS_DARWIN)
182
183/* debug printf */
184# define OSDBGPRINT(a) printf a
185
186
187/*
188 * OS/2
189 */
190#elif defined(RT_OS_OS2)
191
192/* No log API in OS/2 only COM port. */
193# define OSDBGPRINT(a) SUPR0Printf a
194
195
196/*
197 * FreeBSD
198 */
199#elif defined(RT_OS_FREEBSD)
200
201/* debug printf */
202# define OSDBGPRINT(a) printf a
203
204
205/*
206 * Solaris
207 */
208#elif defined(RT_OS_SOLARIS)
209# define OSDBGPRINT(a) SUPR0Printf a
210
211
212#else
213/** @todo other os'es */
214# error "OS interface defines is not done for this OS!"
215#endif
216
217
218/* dprintf */
219#if (defined(DEBUG) && !defined(NO_LOGGING)) || defined(RT_OS_FREEBSD)
220# ifdef LOG_TO_COM
221# include <VBox/log.h>
222# define dprintf(a) RTLogComPrintf a
223# else
224# define dprintf(a) OSDBGPRINT(a)
225# endif
226#else
227# define dprintf(a) do {} while (0)
228#endif
229
230/* dprintf2 - extended logging. */
231#if defined(RT_OS_DARWIN) || defined(RT_OS_OS2) || defined(RT_OS_FREEBSD)
232# define dprintf2 dprintf
233#else
234# define dprintf2(a) do { } while (0)
235#endif
236
237
238/*
239 * Error codes.
240 */
241/** Invalid parameter. */
242#define SUPDRV_ERR_GENERAL_FAILURE (-1)
243/** Invalid parameter. */
244#define SUPDRV_ERR_INVALID_PARAM (-2)
245/** Invalid magic or cookie. */
246#define SUPDRV_ERR_INVALID_MAGIC (-3)
247/** Invalid loader handle. */
248#define SUPDRV_ERR_INVALID_HANDLE (-4)
249/** Failed to lock the address range. */
250#define SUPDRV_ERR_LOCK_FAILED (-5)
251/** Invalid memory pointer. */
252#define SUPDRV_ERR_INVALID_POINTER (-6)
253/** Failed to patch the IDT. */
254#define SUPDRV_ERR_IDT_FAILED (-7)
255/** Memory allocation failed. */
256#define SUPDRV_ERR_NO_MEMORY (-8)
257/** Already loaded. */
258#define SUPDRV_ERR_ALREADY_LOADED (-9)
259/** Permission denied. */
260#define SUPDRV_ERR_PERMISSION_DENIED (-10)
261/** Version mismatch. */
262#define SUPDRV_ERR_VERSION_MISMATCH (-11)
263
264
265
266/*******************************************************************************
267* Structures and Typedefs *
268*******************************************************************************/
269/** Pointer to the device extension. */
270typedef struct SUPDRVDEVEXT *PSUPDRVDEVEXT;
271
272#ifdef VBOX_WITH_IDT_PATCHING
273
274/**
275 * An IDT Entry.
276 */
277typedef struct SUPDRVIDTE
278{
279 /** Low offset word. */
280 uint32_t u16OffsetLow : 16;
281 /** Segment Selector. */
282 uint32_t u16SegSel : 16;
283#ifdef RT_ARCH_AMD64
284 /** Interrupt Stack Table index. */
285 uint32_t u3IST : 3;
286 /** Reserved, ignored. */
287 uint32_t u5Reserved : 5;
288#else
289 /** Reserved. */
290 uint32_t u5Reserved : 5;
291 /** IDT Type part one (not used for task gate). */
292 uint32_t u3Type1 : 3;
293#endif
294 /** IDT Type part two. */
295 uint32_t u5Type2 : 5;
296 /** Descriptor Privilege level. */
297 uint32_t u2DPL : 2;
298 /** Present flag. */
299 uint32_t u1Present : 1;
300 /** High offset word. */
301 uint32_t u16OffsetHigh : 16;
302#ifdef RT_ARCH_AMD64
303 /** The upper top part of the address. */
304 uint32_t u32OffsetTop;
305 /** Reserved dword for qword (aligning the struct), ignored. */
306 uint32_t u32Reserved;
307#endif
308} SUPDRVIDTE, *PSUPDRVIDTE;
309
310/** The u5Type2 value for an interrupt gate. */
311#define SUPDRV_IDTE_TYPE2_INTERRUPT_GATE 0x0e
312
313
314/**
315 * Patch code.
316 */
317typedef struct SUPDRVPATCH
318{
319#define SUPDRV_PATCH_CODE_SIZE 0x50
320 /** Patch code. */
321 uint8_t auCode[SUPDRV_PATCH_CODE_SIZE];
322 /** Changed IDT entry (for parnoid UnpatchIdt()). */
323 SUPDRVIDTE ChangedIdt;
324 /** Saved IDT entry. */
325 SUPDRVIDTE SavedIdt;
326 /** Pointer to the IDT.
327 * We ASSUME the IDT is not re(al)located after bootup and use this as key
328 * for the patches rather than processor number. This prevents some
329 * stupid nesting stuff from happening in case of processors sharing the
330 * IDT.
331 * We're fucked if the processors have different physical mapping for
332 * the(se) page(s), but we'll find that out soon enough in VBOX_STRICT mode.
333 */
334 void *pvIdt;
335 /** Pointer to the IDT entry. */
336 SUPDRVIDTE volatile *pIdtEntry;
337 /** Usage counter. */
338 uint32_t volatile cUsage;
339 /** The offset into auCode of the VMMR0Entry fixup. */
340 uint16_t offVMMR0EntryFixup;
341 /** The offset into auCode of the stub function. */
342 uint16_t offStub;
343 /** Pointer to the next patch. */
344 struct SUPDRVPATCH * volatile pNext;
345} SUPDRVPATCH, *PSUPDRVPATCH;
346
347/**
348 * Usage record for a patch.
349 */
350typedef struct SUPDRVPATCHUSAGE
351{
352 /** Next in the chain. */
353 struct SUPDRVPATCHUSAGE * volatile pNext;
354 /** The patch this usage applies to. */
355 PSUPDRVPATCH pPatch;
356 /** Usage count. */
357 uint32_t volatile cUsage;
358} SUPDRVPATCHUSAGE, *PSUPDRVPATCHUSAGE;
359
360#endif /* VBOX_WITH_IDT_PATCHING */
361
362
363/**
364 * Memory reference types.
365 */
366typedef enum
367{
368 /** Unused entry */
369 MEMREF_TYPE_UNUSED = 0,
370 /** Locked memory (r3 mapping only). */
371 MEMREF_TYPE_LOCKED,
372 /** Continous memory block (r3 and r0 mapping). */
373 MEMREF_TYPE_CONT,
374 /** Low memory block (r3 and r0 mapping). */
375 MEMREF_TYPE_LOW,
376 /** Memory block (r3 and r0 mapping). */
377 MEMREF_TYPE_MEM,
378 /** Locked memory (r3 mapping only) allocated by the support driver. */
379 MEMREF_TYPE_LOCKED_SUP,
380 /** Blow the type up to 32-bit and mark the end. */
381 MEMREG_TYPE_32BIT_HACK = 0x7fffffff
382} SUPDRVMEMREFTYPE, *PSUPDRVMEMREFTYPE;
383
384
385/**
386 * Structure used for tracking memory a session
387 * references in one way or another.
388 */
389typedef struct SUPDRVMEMREF
390{
391 /** The memory object handle. */
392 RTR0MEMOBJ MemObj;
393 /** The ring-3 mapping memory object handle. */
394 RTR0MEMOBJ MapObjR3;
395 /** Type of memory. */
396 SUPDRVMEMREFTYPE eType;
397} SUPDRVMEMREF, *PSUPDRVMEMREF;
398
399
400/**
401 * Bundle of locked memory ranges.
402 */
403typedef struct SUPDRVBUNDLE
404{
405 /** Pointer to the next bundle. */
406 struct SUPDRVBUNDLE * volatile pNext;
407 /** Referenced memory. */
408 SUPDRVMEMREF aMem[64];
409 /** Number of entries used. */
410 uint32_t volatile cUsed;
411} SUPDRVBUNDLE, *PSUPDRVBUNDLE;
412
413
414/**
415 * Loaded image.
416 */
417typedef struct SUPDRVLDRIMAGE
418{
419 /** Next in chain. */
420 struct SUPDRVLDRIMAGE * volatile pNext;
421 /** Pointer to the image. */
422 void *pvImage;
423 /** Pointer to the optional module initialization callback. */
424 PFNR0MODULEINIT pfnModuleInit;
425 /** Pointer to the optional module termination callback. */
426 PFNR0MODULETERM pfnModuleTerm;
427 /** Size of the image. */
428 uint32_t cbImage;
429 /** The offset of the symbol table. */
430 uint32_t offSymbols;
431 /** The number of entries in the symbol table. */
432 uint32_t cSymbols;
433 /** The offset of the string table. */
434 uint32_t offStrTab;
435 /** Size of the string table. */
436 uint32_t cbStrTab;
437 /** The ldr image state. (IOCtl code of last opration.) */
438 uint32_t uState;
439 /** Usage count. */
440 uint32_t volatile cUsage;
441 /** Image name. */
442 char szName[32];
443} SUPDRVLDRIMAGE, *PSUPDRVLDRIMAGE;
444
445
446/** Image usage record. */
447typedef struct SUPDRVLDRUSAGE
448{
449 /** Next in chain. */
450 struct SUPDRVLDRUSAGE * volatile pNext;
451 /** The image. */
452 PSUPDRVLDRIMAGE pImage;
453 /** Load count. */
454 uint32_t volatile cUsage;
455} SUPDRVLDRUSAGE, *PSUPDRVLDRUSAGE;
456
457
458/**
459 * Registered object.
460 * This takes care of reference counting and tracking data for access checks.
461 */
462typedef struct SUPDRVOBJ
463{
464 /** Magic value (SUPDRVOBJ_MAGIC). */
465 uint32_t u32Magic;
466 /** The object type. */
467 SUPDRVOBJTYPE enmType;
468 /** Pointer to the next in the global list. */
469 struct SUPDRVOBJ * volatile pNext;
470 /** Pointer to the object destructor.
471 * This may be set to NULL if the image containing the destructor get unloaded. */
472 PFNSUPDRVDESTRUCTOR pfnDestructor;
473 /** User argument 1. */
474 void *pvUser1;
475 /** User argument 2. */
476 void *pvUser2;
477 /** The total sum of all per-session usage. */
478 uint32_t volatile cUsage;
479 /** The creator user id. */
480 RTUID CreatorUid;
481 /** The creator group id. */
482 RTGID CreatorGid;
483 /** The creator process id. */
484 RTPROCESS CreatorProcess;
485} SUPDRVOBJ, *PSUPDRVOBJ;
486
487/** Magic number for SUPDRVOBJ::u32Magic. (Dame Agatha Mary Clarissa Christie). */
488#define SUPDRVOBJ_MAGIC 0x18900915
489
490/**
491 * The per-session object usage record.
492 */
493typedef struct SUPDRVUSAGE
494{
495 /** Pointer to the next in the list. */
496 struct SUPDRVUSAGE * volatile pNext;
497 /** Pointer to the object we're recording usage for. */
498 PSUPDRVOBJ pObj;
499 /** The usage count. */
500 uint32_t volatile cUsage;
501} SUPDRVUSAGE, *PSUPDRVUSAGE;
502
503
504/**
505 * Per session data.
506 * This is mainly for memory tracking.
507 */
508typedef struct SUPDRVSESSION
509{
510 /** Pointer to the device extension. */
511 PSUPDRVDEVEXT pDevExt;
512 /** Session Cookie. */
513 uint32_t u32Cookie;
514
515 /** Load usage records. (protected by SUPDRVDEVEXT::mtxLdr) */
516 PSUPDRVLDRUSAGE volatile pLdrUsage;
517#ifdef VBOX_WITH_IDT_PATCHING
518 /** Patch usage records. (protected by SUPDRVDEVEXT::SpinLock) */
519 PSUPDRVPATCHUSAGE volatile pPatchUsage;
520#endif
521 /** The VM associated with the session. */
522 PVM pVM;
523 /** List of generic usage records. (protected by SUPDRVDEVEXT::SpinLock) */
524 PSUPDRVUSAGE volatile pUsage;
525
526 /** Spinlock protecting the bundles and the GIP members. */
527 RTSPINLOCK Spinlock;
528 /** The ring-3 mapping of the GIP (readonly). */
529 RTR0MEMOBJ GipMapObjR3;
530 /** Set if the session is using the GIP. */
531 uint32_t fGipReferenced;
532 /** Bundle of locked memory objects. */
533 SUPDRVBUNDLE Bundle;
534
535 /** The user id of the session. (Set by the OS part.) */
536 RTUID Uid;
537 /** The group id of the session. (Set by the OS part.) */
538 RTGID Gid;
539 /** The process (id) of the session. (Set by the OS part.) */
540 RTPROCESS Process;
541 /** Which process this session is associated with. */
542 RTR0PROCESS R0Process;
543#if defined(RT_OS_OS2)
544 /** The system file number of this session. */
545 uint16_t sfn;
546 uint16_t Alignment; /**< Alignment */
547#endif
548#if defined(RT_OS_DARWIN) || defined(RT_OS_OS2) || defined(RT_OS_SOLARIS)
549 /** Pointer to the next session with the same hash. */
550 PSUPDRVSESSION pNextHash;
551#endif
552} SUPDRVSESSION;
553
554
555/**
556 * Device extension.
557 */
558typedef struct SUPDRVDEVEXT
559{
560 /** Spinlock to serialize the initialization,
561 * usage counting and destruction of the IDT entry override and objects. */
562 RTSPINLOCK Spinlock;
563
564#ifdef VBOX_WITH_IDT_PATCHING
565 /** List of patches. */
566 PSUPDRVPATCH volatile pIdtPatches;
567 /** List of patches Free. */
568 PSUPDRVPATCH volatile pIdtPatchesFree;
569#endif
570
571 /** List of registered objects. Protected by the spinlock. */
572 PSUPDRVOBJ volatile pObjs;
573 /** List of free object usage records. */
574 PSUPDRVUSAGE volatile pUsageFree;
575
576 /** Global cookie. */
577 uint32_t u32Cookie;
578
579 /** The IDT entry number.
580 * Only valid if pIdtPatches is set. */
581 uint8_t volatile u8Idt;
582
583 /** Loader mutex.
584 * This protects pvVMMR0, pvVMMR0Entry, pImages and SUPDRVSESSION::pLdrUsage. */
585 RTSEMFASTMUTEX mtxLdr;
586
587 /** VMM Module 'handle'.
588 * 0 if the code VMM isn't loaded and Idt are nops. */
589 void * volatile pvVMMR0;
590 /** VMMR0EntryInt() pointer. */
591 DECLR0CALLBACKMEMBER(int, pfnVMMR0EntryInt, (PVM pVM, unsigned uOperation, void *pvArg));
592 /** VMMR0EntryFast() pointer. */
593 DECLR0CALLBACKMEMBER(int, pfnVMMR0EntryFast, (PVM pVM, unsigned uOperation));
594 /** VMMR0EntryEx() pointer. */
595 DECLR0CALLBACKMEMBER(int, pfnVMMR0EntryEx, (PVM pVM, unsigned uOperation, PSUPVMMR0REQHDR pReq, uint64_t u64Arg));
596
597 /** Linked list of loaded code. */
598 PSUPDRVLDRIMAGE volatile pLdrImages;
599
600 /** GIP mutex.
601 * Any changes to any of the GIP members requires ownership of this mutex,
602 * except on driver init and termination. */
603 RTSEMFASTMUTEX mtxGip;
604 /** Pointer to the Global Info Page (GIP). */
605 PSUPGLOBALINFOPAGE pGip;
606 /** The physical address of the GIP. */
607 RTHCPHYS HCPhysGip;
608 /** Number of processes using the GIP.
609 * (The updates are suspend while cGipUsers is 0.)*/
610 uint32_t volatile cGipUsers;
611 /** The ring-0 memory object handle for the GIP page. */
612 RTR0MEMOBJ GipMemObj;
613 /** The GIP timer handle. */
614 PRTTIMER pGipTimer;
615 /** If non-zero we've successfully called RTTimerRequestSystemGranularity(). */
616 uint32_t u32SystemTimerGranularityGrant;
617 /** The CPU id of the GIP master.
618 * This CPU is responsible for the updating the common GIP data. */
619 RTCPUID volatile idGipMaster;
620} SUPDRVDEVEXT;
621
622
623__BEGIN_DECLS
624
625/*******************************************************************************
626* OS Specific Functions *
627*******************************************************************************/
628void VBOXCALL supdrvOSObjInitCreator(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession);
629bool VBOXCALL supdrvOSObjCanAccess(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession, const char *pszObjName, int *prc);
630bool VBOXCALL supdrvOSGetForcedAsyncTscMode(PSUPDRVDEVEXT pDevExt);
631
632
633/*******************************************************************************
634* Shared Functions *
635*******************************************************************************/
636int VBOXCALL supdrvIOCtl(uintptr_t uIOCtl, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPREQHDR pReqHdr);
637int VBOXCALL supdrvIOCtlFast(uintptr_t uIOCtl, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession);
638int VBOXCALL supdrvInitDevExt(PSUPDRVDEVEXT pDevExt);
639void VBOXCALL supdrvDeleteDevExt(PSUPDRVDEVEXT pDevExt);
640int VBOXCALL supdrvCreateSession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION *ppSession);
641void VBOXCALL supdrvCloseSession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession);
642void VBOXCALL supdrvCleanupSession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession);
643int VBOXCALL supdrvGipInit(PSUPDRVDEVEXT pDevExt, PSUPGLOBALINFOPAGE pGip, RTHCPHYS HCPhys, uint64_t u64NanoTS, unsigned uUpdateHz);
644void VBOXCALL supdrvGipTerm(PSUPGLOBALINFOPAGE pGip);
645void VBOXCALL supdrvGipUpdate(PSUPGLOBALINFOPAGE pGip, uint64_t u64NanoTS);
646void VBOXCALL supdrvGipUpdatePerCpu(PSUPGLOBALINFOPAGE pGip, uint64_t u64NanoTS, unsigned iCpu);
647bool VBOXCALL supdrvDetermineAsyncTsc(uint64_t *pu64DiffCores);
648
649__END_DECLS
650
651#endif
652
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