VirtualBox

source: vbox/trunk/src/VBox/HostDrivers/Support/SUPDRV.h@ 2676

Last change on this file since 2676 was 2373, checked in by vboxsync, 17 years ago

When in async mode we must update the aCPUs data everywhere since we don't know which CPU the operation will be resumed on.
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File size: 22.3 KB
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1/** @file
2 *
3 * VBox host drivers - Ring-0 support drivers - Shared code:
4 * Shared definitions for all host platforms
5 */
6
7/*
8 * Copyright (C) 2006 InnoTek Systemberatung GmbH
9 *
10 * This file is part of VirtualBox Open Source Edition (OSE), as
11 * available from http://www.virtualbox.org. This file is free software;
12 * you can redistribute it and/or modify it under the terms of the GNU
13 * General Public License as published by the Free Software Foundation,
14 * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
15 * distribution. VirtualBox OSE is distributed in the hope that it will
16 * be useful, but WITHOUT ANY WARRANTY of any kind.
17 *
18 * If you received this file as part of a commercial VirtualBox
19 * distribution, then only the terms of your commercial VirtualBox
20 * license agreement apply instead of the previous paragraph.
21 */
22
23#ifndef __SUPDRV_h__
24#define __SUPDRV_h__
25
26
27/*******************************************************************************
28* Header Files *
29*******************************************************************************/
30#include <VBox/cdefs.h>
31#include <VBox/types.h>
32#include <iprt/assert.h>
33#include <iprt/asm.h>
34#include <VBox/sup.h>
35#ifdef USE_NEW_OS_INTERFACE
36# include <iprt/memobj.h>
37# include <iprt/time.h>
38# include <iprt/timer.h>
39# include <iprt/string.h>
40# include <iprt/err.h>
41#endif
42
43
44#if defined(__WIN__)
45 __BEGIN_DECLS
46# if (_MSC_VER >= 1400) && !defined(VBOX_WITH_PATCHED_DDK)
47# define _InterlockedExchange _InterlockedExchange_StupidDDKVsCompilerCrap
48# define _InterlockedExchangeAdd _InterlockedExchangeAdd_StupidDDKVsCompilerCrap
49# define _InterlockedCompareExchange _InterlockedCompareExchange_StupidDDKVsCompilerCrap
50# define _InterlockedAddLargeStatistic _InterlockedAddLargeStatistic_StupidDDKVsCompilerCrap
51# include <ntddk.h>
52# undef _InterlockedExchange
53# undef _InterlockedExchangeAdd
54# undef _InterlockedCompareExchange
55# undef _InterlockedAddLargeStatistic
56# else
57# include <ntddk.h>
58# endif
59# include <memory.h>
60# define memcmp(a,b,c) mymemcmp(a,b,c)
61 int VBOXCALL mymemcmp(const void *, const void *, size_t);
62 __END_DECLS
63
64#elif defined(__LINUX__)
65# include <linux/autoconf.h>
66# include <linux/version.h>
67# if defined(CONFIG_MODVERSIONS) && !defined(MODVERSIONS)
68# define MODVERSIONS
69# if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 71)
70# include <linux/modversions.h>
71# endif
72# endif
73# if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 0)
74# undef ALIGN
75# endif
76# ifndef KBUILD_STR
77# if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 16)
78# define KBUILD_STR(s) s
79# else
80# define KBUILD_STR(s) #s
81# endif
82# endif
83# include <linux/string.h>
84# include <linux/spinlock.h>
85# include <linux/slab.h>
86# include <asm/semaphore.h>
87# include <linux/timer.h>
88
89#elif defined(__DARWIN__)
90# include <libkern/libkern.h>
91# include <iprt/string.h>
92
93#elif defined(__OS2__)
94
95#else
96# error "unsupported OS."
97#endif
98
99#include "SUPDRVIOC.h"
100
101
102
103/*******************************************************************************
104* Defined Constants And Macros *
105*******************************************************************************/
106/*
107 * Hardcoded cookies.
108 */
109#define BIRD 0x64726962 /* 'bird' */
110#define BIRD_INV 0x62697264 /* 'drib' */
111
112
113/*
114 * Win32
115 */
116#if defined(__WIN__)
117
118/* debug printf */
119# define OSDBGPRINT(a) DbgPrint a
120
121/** Maximum number of bytes we try to lock down in one go.
122 * This is supposed to have a limit right below 256MB, but this appears
123 * to actually be much lower. The values here have been determined experimentally.
124 */
125#ifdef __X86__
126# define MAX_LOCK_MEM_SIZE (32*1024*1024) /* 32mb */
127#endif
128#ifdef __AMD64__
129# define MAX_LOCK_MEM_SIZE (24*1024*1024) /* 24mb */
130#endif
131
132
133/*
134 * Linux
135 */
136#elif defined(__LINUX__)
137
138/* check kernel version */
139#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 4, 0)
140# error Unsupported kernel version!
141#endif
142
143__BEGIN_DECLS
144int linux_dprintf(const char *format, ...);
145__END_DECLS
146
147/* debug printf */
148# define OSDBGPRINT(a) printk a
149
150
151/*
152 * Darwin
153 */
154#elif defined(__DARWIN__)
155
156/* debug printf */
157# define OSDBGPRINT(a) printf a
158
159
160/*
161 * OS/2
162 */
163#elif defined(__OS2__)
164
165/* No log API in OS/2 only COM port. */
166# define OSDBGPRINT(a) SUPR0Printf a
167
168
169#else
170/** @todo other os'es */
171# error "OS interface defines is not done for this OS!"
172#endif
173
174
175/* dprintf */
176#if defined(DEBUG) && !defined(NO_LOGGING)
177# ifdef LOG_TO_COM
178# include <VBox/log.h>
179# define dprintf(a) RTLogComPrintf a
180# else
181# define dprintf(a) OSDBGPRINT(a)
182# endif
183#else
184# define dprintf(a) do {} while (0)
185#endif
186
187/* dprintf2 - extended logging. */
188#if defined(__DARWIN__) || defined(__OS2__)
189# define dprintf2 dprintf
190#else
191# define dprintf2(a) do { } while (0)
192#endif
193
194
195/*
196 * Error codes.
197 */
198/** Invalid parameter. */
199#define SUPDRV_ERR_GENERAL_FAILURE (-1)
200/** Invalid parameter. */
201#define SUPDRV_ERR_INVALID_PARAM (-2)
202/** Invalid magic or cookie. */
203#define SUPDRV_ERR_INVALID_MAGIC (-3)
204/** Invalid loader handle. */
205#define SUPDRV_ERR_INVALID_HANDLE (-4)
206/** Failed to lock the address range. */
207#define SUPDRV_ERR_LOCK_FAILED (-5)
208/** Invalid memory pointer. */
209#define SUPDRV_ERR_INVALID_POINTER (-6)
210/** Failed to patch the IDT. */
211#define SUPDRV_ERR_IDT_FAILED (-7)
212/** Memory allocation failed. */
213#define SUPDRV_ERR_NO_MEMORY (-8)
214/** Already loaded. */
215#define SUPDRV_ERR_ALREADY_LOADED (-9)
216/** Permission denied. */
217#define SUPDRV_ERR_PERMISSION_DENIED (-10)
218/** Version mismatch. */
219#define SUPDRV_ERR_VERSION_MISMATCH (-11)
220
221
222
223/*******************************************************************************
224* Structures and Typedefs *
225*******************************************************************************/
226/** Pointer to the device extension. */
227typedef struct SUPDRVDEVEXT *PSUPDRVDEVEXT;
228
229#ifndef VBOX_WITHOUT_IDT_PATCHING
230
231/**
232 * An IDT Entry.
233 */
234typedef struct SUPDRVIDTE
235{
236 /** Low offset word. */
237 uint32_t u16OffsetLow : 16;
238 /** Segment Selector. */
239 uint32_t u16SegSel : 16;
240#ifdef __AMD64__
241 /** Interrupt Stack Table index. */
242 uint32_t u3IST : 3;
243 /** Reserved, ignored. */
244 uint32_t u5Reserved : 5;
245#else
246 /** Reserved. */
247 uint32_t u5Reserved : 5;
248 /** IDT Type part one (not used for task gate). */
249 uint32_t u3Type1 : 3;
250#endif
251 /** IDT Type part two. */
252 uint32_t u5Type2 : 5;
253 /** Descriptor Privilege level. */
254 uint32_t u2DPL : 2;
255 /** Present flag. */
256 uint32_t u1Present : 1;
257 /** High offset word. */
258 uint32_t u16OffsetHigh : 16;
259#ifdef __AMD64__
260 /** The upper top part of the address. */
261 uint32_t u32OffsetTop;
262 /** Reserved dword for qword (aligning the struct), ignored. */
263 uint32_t u32Reserved;
264#endif
265} SUPDRVIDTE, *PSUPDRVIDTE;
266
267/** The u5Type2 value for an interrupt gate. */
268#define SUPDRV_IDTE_TYPE2_INTERRUPT_GATE 0x0e
269
270
271/**
272 * Patch code.
273 */
274typedef struct SUPDRVPATCH
275{
276#define SUPDRV_PATCH_CODE_SIZE 0x50
277 /** Patch code. */
278 uint8_t auCode[SUPDRV_PATCH_CODE_SIZE];
279 /** Changed IDT entry (for parnoid UnpatchIdt()). */
280 SUPDRVIDTE ChangedIdt;
281 /** Saved IDT entry. */
282 SUPDRVIDTE SavedIdt;
283 /** Pointer to the IDT.
284 * We ASSUME the IDT is not re(al)located after bootup and use this as key
285 * for the patches rather than processor number. This prevents some
286 * stupid nesting stuff from happening in case of processors sharing the
287 * IDT.
288 * We're fucked if the processors have different physical mapping for
289 * the(se) page(s), but we'll find that out soon enough in VBOX_STRICT mode.
290 */
291 void *pvIdt;
292 /** Pointer to the IDT entry. */
293 SUPDRVIDTE volatile *pIdtEntry;
294 /** Usage counter. */
295 uint32_t volatile cUsage;
296 /** The offset into auCode of the VMMR0Entry fixup. */
297 uint16_t offVMMR0EntryFixup;
298 /** The offset into auCode of the stub function. */
299 uint16_t offStub;
300 /** Pointer to the next patch. */
301 struct SUPDRVPATCH * volatile pNext;
302} SUPDRVPATCH, *PSUPDRVPATCH;
303
304/**
305 * Usage record for a patch.
306 */
307typedef struct SUPDRVPATCHUSAGE
308{
309 /** Next in the chain. */
310 struct SUPDRVPATCHUSAGE * volatile pNext;
311 /** The patch this usage applies to. */
312 PSUPDRVPATCH pPatch;
313 /** Usage count. */
314 uint32_t volatile cUsage;
315} SUPDRVPATCHUSAGE, *PSUPDRVPATCHUSAGE;
316
317#endif /* !VBOX_WITHOUT_IDT_PATCHING */
318
319
320/**
321 * Memory reference types.
322 */
323typedef enum
324{
325 /** Unused entry */
326 MEMREF_TYPE_UNUSED = 0,
327 /** Locked memory (r3 mapping only). */
328 MEMREF_TYPE_LOCKED,
329 /** Continous memory block (r3 and r0 mapping). */
330 MEMREF_TYPE_CONT,
331 /** Low memory block (r3 and r0 mapping). */
332 MEMREF_TYPE_LOW,
333 /** Memory block (r3 and r0 mapping). */
334 MEMREF_TYPE_MEM,
335 /** Blow the type up to 32-bit and mark the end. */
336 MEMREG_TYPE_32BIT_HACK = 0x7fffffff
337} SUPDRVMEMREFTYPE, *PSUPDRVMEMREFTYPE;
338
339
340/**
341 * Structure used for tracking memory a session
342 * references in one way or another.
343 */
344typedef struct SUPDRVMEMREF
345{
346#ifdef USE_NEW_OS_INTERFACE
347 /** The memory object handle. */
348 RTR0MEMOBJ MemObj;
349 /** The ring-3 mapping memory object handle. */
350 RTR0MEMOBJ MapObjR3;
351 /** Type of memory. */
352 SUPDRVMEMREFTYPE eType;
353
354#else /* !USE_NEW_OS_INTERFACE */
355 /** Pointer to the R0 mapping of the memory.
356 * Set to NULL if N/A. */
357 void *pvR0;
358 /** Pointer to the R3 mapping of the memory.
359 * Set to NULL if N/A. */
360 RTR3PTR pvR3;
361 /** Size of the locked memory. */
362 unsigned cb;
363 /** Type of memory. */
364 SUPDRVMEMREFTYPE eType;
365
366 /** memory type specific information. */
367 union
368 {
369 struct
370 {
371#if defined(__WIN__)
372 /** Pointer to memory descriptor list (MDL). */
373 PMDL *papMdl;
374 unsigned cMdls;
375#elif defined(__LINUX__)
376 struct page **papPages;
377 unsigned cPages;
378#else
379# error "Either no target was defined or we haven't ported the driver to the target yet."
380#endif
381 } locked;
382 struct
383 {
384#if defined(__WIN__)
385 /** Pointer to memory descriptor list (MDL). */
386 PMDL pMdl;
387#elif defined(__LINUX__)
388 struct page *paPages;
389 unsigned cPages;
390#else
391# error "Either no target was defined or we haven't ported the driver to the target yet."
392#endif
393 } cont;
394 struct
395 {
396#if defined(__WIN__)
397 /** Pointer to memory descriptor list (MDL). */
398 PMDL pMdl;
399#elif defined(__LINUX__)
400 /** Pointer to the array of page pointers. */
401 struct page **papPages;
402 /** Number of pages in papPages. */
403 unsigned cPages;
404#else
405# error "Either no target was defined or we haven't ported the driver to the target yet."
406#endif
407 } mem;
408 } u;
409#endif /* !USE_NEW_OS_INTERFACE */
410} SUPDRVMEMREF, *PSUPDRVMEMREF;
411
412
413/**
414 * Bundle of locked memory ranges.
415 */
416typedef struct SUPDRVBUNDLE
417{
418 /** Pointer to the next bundle. */
419 struct SUPDRVBUNDLE * volatile pNext;
420 /** Referenced memory. */
421 SUPDRVMEMREF aMem[64];
422 /** Number of entries used. */
423 uint32_t volatile cUsed;
424} SUPDRVBUNDLE, *PSUPDRVBUNDLE;
425
426
427/**
428 * Loaded image.
429 */
430typedef struct SUPDRVLDRIMAGE
431{
432 /** Next in chain. */
433 struct SUPDRVLDRIMAGE * volatile pNext;
434 /** Pointer to the image. */
435 void *pvImage;
436 /** Pointer to the optional module initialization callback. */
437 PFNR0MODULEINIT pfnModuleInit;
438 /** Pointer to the optional module termination callback. */
439 PFNR0MODULETERM pfnModuleTerm;
440 /** Size of the image. */
441 uint32_t cbImage;
442 /** The offset of the symbol table. */
443 uint32_t offSymbols;
444 /** The number of entries in the symbol table. */
445 uint32_t cSymbols;
446 /** The offset of the string table. */
447 uint32_t offStrTab;
448 /** Size of the string table. */
449 uint32_t cbStrTab;
450 /** The ldr image state. (IOCtl code of last opration.) */
451 uint32_t uState;
452 /** Usage count. */
453 uint32_t volatile cUsage;
454 /** Image name. */
455 char szName[32];
456} SUPDRVLDRIMAGE, *PSUPDRVLDRIMAGE;
457
458
459/** Image usage record. */
460typedef struct SUPDRVLDRUSAGE
461{
462 /** Next in chain. */
463 struct SUPDRVLDRUSAGE * volatile pNext;
464 /** The image. */
465 PSUPDRVLDRIMAGE pImage;
466 /** Load count. */
467 uint32_t volatile cUsage;
468} SUPDRVLDRUSAGE, *PSUPDRVLDRUSAGE;
469
470
471/**
472 * Registered object.
473 * This takes care of reference counting and tracking data for access checks.
474 */
475typedef struct SUPDRVOBJ
476{
477 /** Magic value (SUPDRVOBJ_MAGIC). */
478 uint32_t u32Magic;
479 /** The object type. */
480 SUPDRVOBJTYPE enmType;
481 /** Pointer to the next in the global list. */
482 struct SUPDRVOBJ * volatile pNext;
483 /** Pointer to the object destructor. */
484 PFNSUPDRVDESTRUCTOR pfnDestructor;
485 /** User argument 1. */
486 void *pvUser1;
487 /** User argument 2. */
488 void *pvUser2;
489 /** The total sum of all per-session usage. */
490 uint32_t volatile cUsage;
491 /** The creator user id. */
492 RTUID CreatorUid;
493 /** The creator group id. */
494 RTGID CreatorGid;
495 /** The creator process id. */
496 RTPROCESS CreatorProcess;
497} SUPDRVOBJ, *PSUPDRVOBJ;
498
499/** Magic number for SUPDRVOBJ::u32Magic. (Dame Agatha Mary Clarissa Christie). */
500#define SUPDRVOBJ_MAGIC 0x18900915
501
502/**
503 * The per-session object usage record.
504 */
505typedef struct SUPDRVUSAGE
506{
507 /** Pointer to the next in the list. */
508 struct SUPDRVUSAGE * volatile pNext;
509 /** Pointer to the object we're recording usage for. */
510 PSUPDRVOBJ pObj;
511 /** The usage count. */
512 uint32_t volatile cUsage;
513} SUPDRVUSAGE, *PSUPDRVUSAGE;
514
515
516/**
517 * Per session data.
518 * This is mainly for memory tracking.
519 */
520typedef struct SUPDRVSESSION
521{
522 /** Pointer to the device extension. */
523 PSUPDRVDEVEXT pDevExt;
524 /** Session Cookie. */
525 uint32_t u32Cookie;
526
527 /** Load usage records. (protected by SUPDRVDEVEXT::mtxLdr) */
528 PSUPDRVLDRUSAGE volatile pLdrUsage;
529#ifndef VBOX_WITHOUT_IDT_PATCHING
530 /** Patch usage records. (protected by SUPDRVDEVEXT::SpinLock) */
531 PSUPDRVPATCHUSAGE volatile pPatchUsage;
532#else
533 /** The VM associated with the session. */
534 PVM pVM;
535#endif
536 /** List of generic usage records. (protected by SUPDRVDEVEXT::SpinLock) */
537 PSUPDRVUSAGE volatile pUsage;
538
539 /** Spinlock protecting the bundles and the GIP members. */
540 RTSPINLOCK Spinlock;
541#ifdef USE_NEW_OS_INTERFACE
542 /** The ring-3 mapping of the GIP (readonly). */
543 RTR0MEMOBJ GipMapObjR3;
544#else
545 /** The read-only usermode mapping address of the GID.
546 * This is NULL if the GIP hasn't been mapped. */
547 PCSUPGLOBALINFOPAGE pGip;
548#endif
549 /** Set if the session is using the GIP. */
550 uint32_t fGipReferenced;
551 /** Bundle of locked memory objects. */
552 SUPDRVBUNDLE Bundle;
553
554 /** The user id of the session. (Set by the OS part.) */
555 RTUID Uid;
556 /** The group id of the session. (Set by the OS part.) */
557 RTGID Gid;
558 /** The process (id) of the session. (Set by the OS part.) */
559 RTPROCESS Process;
560 /** Which process this session is associated with. */
561 RTR0PROCESS R0Process;
562#if defined(__OS2__)
563 /** The system file number of this session. */
564 uint16_t sfn;
565 uint16_t Alignment; /**< Alignment */
566#endif
567#if defined(__DARWIN__) || defined(__OS2__)
568 /** Pointer to the next session with the same has. */
569 PSUPDRVSESSION pNextHash;
570#endif
571} SUPDRVSESSION;
572
573
574/**
575 * Device extension.
576 */
577typedef struct SUPDRVDEVEXT
578{
579 /** Spinlock to serialize the initialization,
580 * usage counting and destruction of the IDT entry override. */
581 RTSPINLOCK Spinlock;
582
583#ifndef VBOX_WITHOUT_IDT_PATCHING
584 /** List of patches. */
585 PSUPDRVPATCH volatile pIdtPatches;
586 /** List of patches Free. */
587 PSUPDRVPATCH volatile pIdtPatchesFree;
588#endif
589
590 /** List of registered objects. */
591 PSUPDRVOBJ volatile pObjs;
592 /** List of free object usage records. */
593 PSUPDRVUSAGE volatile pUsageFree;
594
595 /** Global cookie. */
596 uint32_t u32Cookie;
597
598 /** The IDT entry number.
599 * Only valid if pIdtPatches is set. */
600 uint8_t volatile u8Idt;
601
602 /** Loader mutex.
603 * This protects pvVMMR0, pvVMMR0Entry, pImages and SUPDRVSESSION::pLdrUsage. */
604 RTSEMFASTMUTEX mtxLdr;
605
606 /** VMM Module 'handle'.
607 * 0 if the code VMM isn't loaded and Idt are nops. */
608 void * volatile pvVMMR0;
609 /** VMMR0Entry() pointer. */
610 DECLCALLBACKMEMBER(int, pfnVMMR0Entry)(PVM pVM, unsigned uOperation, void *pvArg);
611
612 /** Linked list of loaded code. */
613 PSUPDRVLDRIMAGE volatile pLdrImages;
614
615 /** GIP mutex.
616 * Any changes to any of the GIP members requires ownership of this mutex,
617 * except on driver init and termination. */
618 RTSEMFASTMUTEX mtxGip;
619 /** Pointer to the Global Info Page (GIP). */
620 PSUPGLOBALINFOPAGE pGip;
621 /** The physical address of the GIP. */
622 RTHCPHYS HCPhysGip;
623 /** Number of processes using the GIP.
624 * (The updates are suspend while cGipUsers is 0.)*/
625 uint32_t volatile cGipUsers;
626#ifdef USE_NEW_OS_INTERFACE
627 /** The ring-0 memory object handle for the GIP page. */
628 RTR0MEMOBJ GipMemObj;
629 /** The GIP timer handle. */
630 PRTTIMER pGipTimer;
631 /** If non-zero we've successfully called RTTimerRequestSystemGranularity(). */
632 uint32_t u32SystemTimerGranularityGrant;
633#endif
634#ifdef __WIN__
635 /** The GIP timer object. */
636 KTIMER GipTimer;
637 /** The GIP DPC object associated with GipTimer. */
638 KDPC GipDpc;
639 /** The GIP DPC objects for updating per-cpu data. */
640 KDPC aGipCpuDpcs[32];
641 /** Pointer to the MDL for the pGip page. */
642 PMDL pGipMdl;
643 /** GIP timer interval (ms). */
644 ULONG ulGipTimerInterval;
645#endif
646#ifdef __LINUX__
647 /** The last jiffies. */
648 unsigned long ulLastJiffies;
649 /** The last mono time stamp. */
650 uint64_t volatile u64LastMonotime;
651 /** Set when GIP is suspended to prevent the timers from re-registering themselves). */
652 uint8_t volatile fGIPSuspended;
653# ifdef CONFIG_SMP
654 /** Array of per CPU data for SUPGIPMODE_ASYNC_TSC. */
655 struct LINUXCPU
656 {
657 /** The last mono time stamp. */
658 uint64_t volatile u64LastMonotime;
659 /** The last jiffies. */
660 unsigned long ulLastJiffies;
661 /** The Linux Process ID. */
662 unsigned iSmpProcessorId;
663 /** The per cpu timer. */
664 struct timer_list Timer;
665 } aCPUs[256];
666# endif
667#endif
668} SUPDRVDEVEXT;
669
670
671__BEGIN_DECLS
672
673/*******************************************************************************
674* OS Specific Functions *
675*******************************************************************************/
676void VBOXCALL supdrvOSObjInitCreator(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession);
677bool VBOXCALL supdrvOSObjCanAccess(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession, const char *pszObjName, int *prc);
678#ifndef USE_NEW_OS_INTERFACE
679int VBOXCALL supdrvOSLockMemOne(PSUPDRVMEMREF pMem, PSUPPAGE paPages);
680void VBOXCALL supdrvOSUnlockMemOne(PSUPDRVMEMREF pMem);
681int VBOXCALL supdrvOSContAllocOne(PSUPDRVMEMREF pMem, PRTR0PTR ppvR0, PRTR3PTR ppvR3, PRTHCPHYS pHCPhys);
682void VBOXCALL supdrvOSContFreeOne(PSUPDRVMEMREF pMem);
683int VBOXCALL supdrvOSLowAllocOne(PSUPDRVMEMREF pMem, PRTR0PTR ppvR0, PRTR3PTR ppvR3, PSUPPAGE paPages);
684void VBOXCALL supdrvOSLowFreeOne(PSUPDRVMEMREF pMem);
685int VBOXCALL supdrvOSMemAllocOne(PSUPDRVMEMREF pMem, PRTR0PTR ppvR0, PRTR3PTR ppvR3);
686void VBOXCALL supdrvOSMemGetPages(PSUPDRVMEMREF pMem, PSUPPAGE paPages);
687void VBOXCALL supdrvOSMemFreeOne(PSUPDRVMEMREF pMem);
688int VBOXCALL supdrvOSGipMap(PSUPDRVDEVEXT pDevExt, PCSUPGLOBALINFOPAGE *ppGip);
689int VBOXCALL supdrvOSGipUnmap(PSUPDRVDEVEXT pDevExt, PCSUPGLOBALINFOPAGE pGip);
690void VBOXCALL supdrvOSGipResume(PSUPDRVDEVEXT pDevExt);
691void VBOXCALL supdrvOSGipSuspend(PSUPDRVDEVEXT pDevExt);
692unsigned VBOXCALL supdrvOSGetCPUCount(void);
693bool VBOXCALL supdrvOSGetForcedAsyncTscMode(void);
694#endif
695
696
697/*******************************************************************************
698* Shared Functions *
699*******************************************************************************/
700int VBOXCALL supdrvIOCtl(unsigned uIOCtl, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession,
701 void *pvIn, unsigned cbIn, void *pvOut, unsigned cbOut, unsigned *pcbReturned);
702#ifdef VBOX_WITHOUT_IDT_PATCHING
703int VBOXCALL supdrvIOCtlFast(unsigned uIOCtl, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession);
704#endif
705int VBOXCALL supdrvInitDevExt(PSUPDRVDEVEXT pDevExt);
706int VBOXCALL supdrvDeleteDevExt(PSUPDRVDEVEXT pDevExt);
707int VBOXCALL supdrvCreateSession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION *ppSession);
708void VBOXCALL supdrvCloseSession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession);
709void VBOXCALL supdrvCleanupSession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession);
710int VBOXCALL supdrvGipInit(PSUPDRVDEVEXT pDevExt, PSUPGLOBALINFOPAGE pGip, RTHCPHYS HCPhys, uint64_t u64NanoTS, unsigned uUpdateHz);
711void VBOXCALL supdrvGipTerm(PSUPGLOBALINFOPAGE pGip);
712void VBOXCALL supdrvGipUpdate(PSUPGLOBALINFOPAGE pGip, uint64_t u64NanoTS);
713void VBOXCALL supdrvGipUpdatePerCpu(PSUPGLOBALINFOPAGE pGip, uint64_t u64NanoTS, unsigned iCpu);
714
715__END_DECLS
716
717#endif
718
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