PDMDriver.cpp@ 1995

Last change on this file since 1995 was 1354, checked in by vboxsync, 18 years ago
Make it possible to move shared libs from /opt/VirtualBox-xxx to /usr/lib as required for Mandriva packages. Make it possible to move runtime modules to /usr/lib/virtualbox.
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 36.8 KB

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1	/* $Id: PDMDriver.cpp 1354 2007-03-09 09:39:20Z vboxsync $ */
2	/** @file
3	* PDM - Pluggable Device and Driver Manager, Driver parts.
4	*/
5
6	/*
7	* Copyright (C) 2006 InnoTek Systemberatung GmbH
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 as published by the Free Software Foundation,
13	* in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
14	* distribution. VirtualBox OSE is distributed in the hope that it will
15	* be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* If you received this file as part of a commercial VirtualBox
18	* distribution, then only the terms of your commercial VirtualBox
19	* license agreement apply instead of the previous paragraph.
20	*/
21
22
23	/*******************************************************************************
24	* Header Files *
25	*******************************************************************************/
26	#define LOG_GROUP LOG_GROUP_PDM_DRIVER
27	#include "PDMInternal.h"
28	#include <VBox/pdm.h>
29	#include <VBox/mm.h>
30	#include <VBox/cfgm.h>
31	#include <VBox/vmm.h>
32	#include <VBox/sup.h>
33	#include <VBox/vm.h>
34	#include <VBox/version.h>
35	#include <VBox/err.h>
36
37	#include <VBox/log.h>
38	#include <iprt/assert.h>
39	#include <iprt/thread.h>
40	#include <iprt/string.h>
41	#include <iprt/asm.h>
42	#include <iprt/alloc.h>
43	#include <iprt/path.h>
44
45
46	/*******************************************************************************
47	* Structures and Typedefs *
48	*******************************************************************************/
49	/**
50	* Internal callback structure pointer.
51	* The main purpose is to define the extra data we associate
52	* with PDMDRVREGCB so we can find the VM instance and so on.
53	*/
54	typedef struct PDMDRVREGCBINT
55	{
56	/** The callback structure. */
57	PDMDRVREGCB Core;
58	/** A bit of padding. */
59	uint32_t u32[4];
60	/** VM Handle. */
61	PVM pVM;
62	} PDMDRVREGCBINT, *PPDMDRVREGCBINT;
63	typedef const PDMDRVREGCBINT *PCPDMDRVREGCBINT;
64
65
66	/*******************************************************************************
67	* Internal Functions *
68	*******************************************************************************/
69	/** @name Driver Helpers
70	* @{
71	*/
72	static DECLCALLBACK(int) pdmR3DrvHlp_Attach(PPDMDRVINS pDrvIns, PPDMIBASE *ppBaseInterface);
73	static DECLCALLBACK(int) pdmR3DrvHlp_Detach(PPDMDRVINS pDrvIns);
74	static DECLCALLBACK(int) pdmR3DrvHlp_DetachSelf(PPDMDRVINS pDrvIns);
75	static DECLCALLBACK(int) pdmR3DrvHlp_MountPrepare(PPDMDRVINS pDrvIns, const char pszFilename, const char pszCoreDriver);
76	static DECLCALLBACK(int) pdmR3DrvHlp_VMSetError(PPDMDRVINS pDrvIns, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...);
77	static DECLCALLBACK(int) pdmR3DrvHlp_VMSetErrorV(PPDMDRVINS pDrvIns, int rc, RT_SRC_POS_DECL, const char *pszFormat, va_list va);
78	static DECLCALLBACK(bool) pdmR3DrvHlp_AssertEMT(PPDMDRVINS pDrvIns, const char pszFile, unsigned iLine, const char pszFunction);
79	static DECLCALLBACK(bool) pdmR3DrvHlp_AssertOther(PPDMDRVINS pDrvIns, const char pszFile, unsigned iLine, const char pszFunction);
80	static DECLCALLBACK(int) pdmR3DrvHlp_PDMQueueCreate(PPDMDRVINS pDrvIns, RTUINT cbItem, RTUINT cItems, uint32_t cMilliesInterval, PFNPDMQUEUEDRV pfnCallback, PPDMQUEUE *ppQueue);
81	static DECLCALLBACK(int) pdmR3DrvHlp_PDMPollerRegister(PPDMDRVINS pDrvIns, PFNPDMDRVPOLLER pfnPoller);
82	static DECLCALLBACK(uint64_t) pdmR3DrvHlp_TMGetVirtualFreq(PPDMDRVINS pDrvIns);
83	static DECLCALLBACK(uint64_t) pdmR3DrvHlp_TMGetVirtualTime(PPDMDRVINS pDrvIns);
84	static DECLCALLBACK(int) pdmR3DrvHlp_TMTimerCreate(PPDMDRVINS pDrvIns, TMCLOCK enmClock, PFNTMTIMERDRV pfnCallback, const char *pszDesc, PPTMTIMERHC ppTimer);
85	static DECLCALLBACK(int) pdmR3DrvHlp_SSMRegister(PPDMDRVINS pDrvIns, const char *pszName, uint32_t u32Instance, uint32_t u32Version, size_t cbGuess,
86	PFNSSMDRVSAVEPREP pfnSavePrep, PFNSSMDRVSAVEEXEC pfnSaveExec, PFNSSMDRVSAVEDONE pfnSaveDone,
87	PFNSSMDRVLOADPREP pfnLoadPrep, PFNSSMDRVLOADEXEC pfnLoadExec, PFNSSMDRVLOADDONE pfnLoadDone);
88	static DECLCALLBACK(int) pdmR3DrvHlp_SSMDeregister(PPDMDRVINS pDrvIns, const char *pszName, uint32_t u32Instance);
89	static DECLCALLBACK(void) pdmR3DrvHlp_STAMRegister(PPDMDRVINS pDrvIns, void pvSample, STAMTYPE enmType, const char pszName, STAMUNIT enmUnit, const char *pszDesc);
90	static DECLCALLBACK(void) pdmR3DrvHlp_STAMRegisterF(PPDMDRVINS pDrvIns, void pvSample, STAMTYPE enmType, STAMVISIBILITY enmVisibility, STAMUNIT enmUnit, const char pszDesc, const char *pszName, ...);
91	static DECLCALLBACK(void) pdmR3DrvHlp_STAMRegisterV(PPDMDRVINS pDrvIns, void pvSample, STAMTYPE enmType, STAMVISIBILITY enmVisibility, STAMUNIT enmUnit, const char pszDesc, const char *pszName, va_list args);
92	static DECLCALLBACK(int) pdmR3DrvHlp_SUPCallVMMR0Ex(PPDMDRVINS pDrvIns, unsigned uOperation, void *pvArg, unsigned cbArg);
93
94	/** @def PDMDRV_ASSERT_DRVINS
95	* Asserts the validity of the driver instance.
96	*/
97	#ifdef VBOX_STRICT
98	# define PDMDRV_ASSERT_DRVINS(pDrvIns) do { Assert(pDrvIns); Assert(pDrvIns->u32Version == PDM_DRVINS_VERSION); Assert(pDrvIns->pvInstanceData == (void *)&pDrvIns->achInstanceData[0]); } while (0)
99	#else
100	# define PDMDRV_ASSERT_DRVINS(pDrvIns) do { } while (0)
101	#endif
102	/** @} */
103
104	static DECLCALLBACK(int) pdmR3DrvRegister(PCPDMDRVREGCB pCallbacks, PCPDMDRVREG pDrvReg);
105	static int pdmR3DrvLoad(PVM pVM, PPDMDRVREGCBINT pRegCB, const char pszFilename, const char pszName);
106
107
108	/*******************************************************************************
109	* Global Variables *
110	*******************************************************************************/
111	/**
112	* The driver helper structure.
113	*/
114	const PDMDRVHLP g_pdmR3DrvHlp =
115	{
116	PDM_DRVHLP_VERSION,
117	pdmR3DrvHlp_Attach,
118	pdmR3DrvHlp_Detach,
119	pdmR3DrvHlp_DetachSelf,
120	pdmR3DrvHlp_MountPrepare,
121	pdmR3DrvHlp_AssertEMT,
122	pdmR3DrvHlp_AssertOther,
123	pdmR3DrvHlp_VMSetError,
124	pdmR3DrvHlp_VMSetErrorV,
125	pdmR3DrvHlp_PDMQueueCreate,
126	pdmR3DrvHlp_PDMPollerRegister,
127	pdmR3DrvHlp_TMGetVirtualFreq,
128	pdmR3DrvHlp_TMGetVirtualTime,
129	pdmR3DrvHlp_TMTimerCreate,
130	pdmR3DrvHlp_SSMRegister,
131	pdmR3DrvHlp_SSMDeregister,
132	pdmR3DrvHlp_STAMRegister,
133	pdmR3DrvHlp_STAMRegisterF,
134	pdmR3DrvHlp_STAMRegisterV,
135	pdmR3DrvHlp_SUPCallVMMR0Ex,
136	0 /* the end */
137	};
138
139
140	/**
141	* Register external drivers
142	*
143	* @returns VBox status code.
144	* @param pVM The VM to operate on.
145	* @param pfnCallback Driver registration callback
146	*/
147	PDMR3DECL(int) PDMR3RegisterDrivers(PVM pVM, FNPDMVBOXDRIVERSREGISTER pfnCallback)
148	{
149	/*
150	* The registration callbacks.
151	*/
152	PDMDRVREGCBINT RegCB;
153	RegCB.Core.u32Version = PDM_DRVREG_CB_VERSION;
154	RegCB.Core.pfnRegister = pdmR3DrvRegister;
155	RegCB.pVM = pVM;
156
157	int rc = pfnCallback(&RegCB.Core, VBOX_VERSION);
158	if (VBOX_FAILURE(rc))
159	AssertMsgFailed(("VBoxDriversRegister failed with rc=%Vrc\n"));
160
161	return rc;
162	}
163
164	/**
165	* This function will initialize the drivers for this VM instance.
166	*
167	* First of all this mean loading the builtin drivers and letting them
168	* register themselves. Beyond that any additional driver modules are
169	* loaded and called for registration.
170	*
171	* @returns VBox status code.
172	* @param pVM VM Handle.
173	*/
174	int pdmR3DrvInit(PVM pVM)
175	{
176	LogFlow(("pdmR3DrvInit:\n"));
177
178	AssertRelease(!(RT_OFFSETOF(PDMDRVINS, achInstanceData) & 15));
179	PPDMDRVINS pDrvInsAssert;
180	AssertRelease(sizeof(pDrvInsAssert->Internal.s) <= sizeof(pDrvInsAssert->Internal.padding));
181
182	/*
183	* The registration callbacks.
184	*/
185	PDMDRVREGCBINT RegCB;
186	RegCB.Core.u32Version = PDM_DRVREG_CB_VERSION;
187	RegCB.Core.pfnRegister = pdmR3DrvRegister;
188	RegCB.pVM = pVM;
189
190	/*
191	* Load the builtin module
192	*/
193	PCFGMNODE pDriversNode = CFGMR3GetChild(CFGMR3GetRoot(pVM), "PDM/Drivers");
194	bool fLoadBuiltin;
195	int rc = CFGMR3QueryBool(pDriversNode, "LoadBuiltin", &fLoadBuiltin);
196	if (rc == VERR_CFGM_VALUE_NOT_FOUND \|\| rc == VERR_CFGM_NO_PARENT)
197	fLoadBuiltin = true;
198	else if (VBOX_FAILURE(rc))
199	{
200	AssertMsgFailed(("Configuration error: Querying boolean \"LoadBuiltin\" failed with %Vrc\n", rc));
201	return rc;
202	}
203	if (fLoadBuiltin)
204	{
205	/* make filename */
206	char pszFilename = pdmR3FileR3("VBoxDD", /fShared=*/true);
207	if (!pszFilename)
208	return VERR_NO_TMP_MEMORY;
209	rc = pdmR3DrvLoad(pVM, &RegCB, pszFilename, "VBoxDD");
210	RTMemTmpFree(pszFilename);
211	if (VBOX_FAILURE(rc))
212	return rc;
213	}
214
215	/*
216	* Load additional driver modules.
217	*/
218	for (PCFGMNODE pCur = CFGMR3GetFirstChild(pDriversNode); pCur; pCur = CFGMR3GetNextChild(pCur))
219	{
220	/*
221	* Get the name and path.
222	*/
223	char szName[PDMMOD_NAME_LEN];
224	rc = CFGMR3GetName(pCur, &szName[0], sizeof(szName));
225	if (rc == VERR_CFGM_NOT_ENOUGH_SPACE)
226	{
227	AssertMsgFailed(("configuration error: The module name is too long, cchName=%d.\n", CFGMR3GetNameLen(pCur)));
228	return VERR_PDM_MODULE_NAME_TOO_LONG;
229	}
230	else if (VBOX_FAILURE(rc))
231	{
232	AssertMsgFailed(("CFGMR3GetName -> %Vrc.\n", rc));
233	return rc;
234	}
235
236	/* the path is optional, if no path the module name + path is used. */
237	char szFilename[RTPATH_MAX];
238	rc = CFGMR3QueryString(pCur, "Path", &szFilename[0], sizeof(szFilename));
239	if (rc == VERR_CFGM_VALUE_NOT_FOUND \|\| rc == VERR_CFGM_NO_PARENT)
240	strcpy(szFilename, szName);
241	else if (VBOX_FAILURE(rc))
242	{
243	AssertMsgFailed(("configuration error: Failure to query the module path, rc=%Vrc.\n", rc));
244	return rc;
245	}
246
247	/* prepend path? */
248	if (!RTPathHavePath(szFilename))
249	{
250	char *psz = pdmR3FileR3(szFilename);
251	if (!psz)
252	return VERR_NO_TMP_MEMORY;
253	size_t cch = strlen(psz) + 1;
254	if (cch > sizeof(szFilename))
255	{
256	RTMemTmpFree(psz);
257	AssertMsgFailed(("Filename too long! cch=%d '%s'\n", cch, psz));
258	return VERR_FILENAME_TOO_LONG;
259	}
260	memcpy(szFilename, psz, cch);
261	RTMemTmpFree(psz);
262	}
263
264	/*
265	* Load the module and register it's drivers.
266	*/
267	rc = pdmR3DrvLoad(pVM, &RegCB, szFilename, szName);
268	if (VBOX_FAILURE(rc))
269	return rc;
270	}
271
272	LogFlow(("pdmR3DrvInit: returns VINF_SUCCESS\n"));
273	return VINF_SUCCESS;
274	}
275
276
277	/**
278	* Loads one driver module and call the registration entry point.
279	*
280	* @returns VBox status code.
281	* @param pVM VM handle.
282	* @param pRegCB The registration callback stuff.
283	* @param pszFilename Module filename.
284	* @param pszName Module name.
285	*/
286	static int pdmR3DrvLoad(PVM pVM, PPDMDRVREGCBINT pRegCB, const char pszFilename, const char pszName)
287	{
288	/*
289	* Load it.
290	*/
291	int rc = pdmR3LoadR3(pVM, pszFilename, pszName);
292	if (VBOX_SUCCESS(rc))
293	{
294	/*
295	* Get the registration export and call it.
296	*/
297	FNPDMVBOXDRIVERSREGISTER *pfnVBoxDriversRegister;
298	rc = PDMR3GetSymbolR3(pVM, pszName, "VBoxDriversRegister", (void **)&pfnVBoxDriversRegister);
299	if (VBOX_SUCCESS(rc))
300	{
301	Log(("PDM: Calling VBoxDriversRegister (%p) of %s (%s)\n", pfnVBoxDriversRegister, pszName, pszFilename));
302	rc = pfnVBoxDriversRegister(&pRegCB->Core, VBOX_VERSION);
303	if (VBOX_SUCCESS(rc))
304	Log(("PDM: Successfully loaded driver module %s (%s).\n", pszName, pszFilename));
305	else
306	AssertMsgFailed(("VBoxDriversRegister failed with rc=%Vrc\n"));
307	}
308	else
309	{
310	AssertMsgFailed(("Failed to locate 'VBoxDriversRegister' in %s (%s) rc=%Vrc\n", pszName, pszFilename, rc));
311	if (rc == VERR_SYMBOL_NOT_FOUND)
312	rc = VERR_PDM_NO_REGISTRATION_EXPORT;
313	}
314	}
315	else
316	AssertMsgFailed(("Failed to load %s (%s) rc=%Vrc!\n", pszName, pszFilename, rc));
317	return rc;
318	}
319
320
321	/** @copydoc PDMDRVREGCB::pfnRegister */
322	static DECLCALLBACK(int) pdmR3DrvRegister(PCPDMDRVREGCB pCallbacks, PCPDMDRVREG pDrvReg)
323	{
324	/*
325	* Validate the registration structure.
326	*/
327	Assert(pDrvReg);
328	if (pDrvReg->u32Version != PDM_DRVREG_VERSION)
329	{
330	AssertMsgFailed(("Unknown struct version %#x!\n", pDrvReg->u32Version));
331	return VERR_PDM_UNKNOWN_DRVREG_VERSION;
332	}
333	if ( !pDrvReg->szDriverName[0]
334	\|\| strlen(pDrvReg->szDriverName) >= sizeof(pDrvReg->szDriverName))
335	{
336	AssertMsgFailed(("Invalid name '%s'\n", pDrvReg->szDriverName));
337	return VERR_PDM_INVALID_DRIVER_REGISTRATION;
338	}
339	if ((pDrvReg->fFlags & PDM_DRVREG_FLAGS_HOST_BITS_MASK) != PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT)
340	{
341	AssertMsgFailed(("Invalid host bits flags! fFlags=%#x (Driver %s)\n", pDrvReg->fFlags, pDrvReg->szDriverName));
342	return VERR_PDM_INVALID_DRIVER_HOST_BITS;
343	}
344	if (pDrvReg->cMaxInstances <= 0)
345	{
346	AssertMsgFailed(("Max instances %u! (Driver %s)\n", pDrvReg->cMaxInstances, pDrvReg->szDriverName));
347	return VERR_PDM_INVALID_DRIVER_REGISTRATION;
348	}
349	if (pDrvReg->cbInstance > _1M)
350	{
351	AssertMsgFailed(("Instance size above 1MB, %d bytes! (Driver %s)\n", pDrvReg->cbInstance, pDrvReg->szDriverName));
352	return VERR_PDM_INVALID_DRIVER_REGISTRATION;
353	}
354	if (!pDrvReg->pfnConstruct)
355	{
356	AssertMsgFailed(("No constructore! (Driver %s)\n", pDrvReg->szDriverName));
357	return VERR_PDM_INVALID_DRIVER_REGISTRATION;
358	}
359
360	/*
361	* Check for duplicate and find FIFO entry at the same time.
362	*/
363	PCPDMDRVREGCBINT pRegCB = (PCPDMDRVREGCBINT)pCallbacks;
364	PPDMDRV pDrvPrev = NULL;
365	PPDMDRV pDrv = pRegCB->pVM->pdm.s.pDrvs;
366	for (; pDrv; pDrvPrev = pDrv, pDrv = pDrv->pNext)
367	{
368	if (!strcmp(pDrv->pDrvReg->szDriverName, pDrvReg->szDriverName))
369	{
370	AssertMsgFailed(("Driver '%s' already exists\n", pDrvReg->szDriverName));
371	return VERR_PDM_DRIVER_NAME_CLASH;
372	}
373	}
374
375	/*
376	* Allocate new driver structure and insert it into the list.
377	*/
378	pDrv = (PPDMDRV)MMR3HeapAlloc(pRegCB->pVM, MM_TAG_PDM_DRIVER, sizeof(*pDrv));
379	if (pDrv)
380	{
381	pDrv->pNext = NULL;
382	pDrv->cInstances = 0;
383	pDrv->pDrvReg = pDrvReg;
384
385	if (pDrvPrev)
386	pDrvPrev->pNext = pDrv;
387	else
388	pRegCB->pVM->pdm.s.pDrvs = pDrv;
389	Log(("PDM: Registered driver '%s'\n", pDrvReg->szDriverName));
390	return VINF_SUCCESS;
391	}
392	return VERR_NO_MEMORY;
393	}
394
395
396	/**
397	* Lookups a driver structure by name.
398	* @internal
399	*/
400	PPDMDRV pdmR3DrvLookup(PVM pVM, const char *pszName)
401	{
402	for (PPDMDRV pDrv = pVM->pdm.s.pDrvs; pDrv; pDrv = pDrv->pNext)
403	if (!strcmp(pDrv->pDrvReg->szDriverName, pszName))
404	return pDrv;
405	return NULL;
406	}
407
408
409	/**
410	* Detaches a driver from whatever it's attached to.
411	* This will of course lead to the destruction of the driver and all drivers below it in the chain.
412	*
413	* @returns VINF_SUCCESS
414	* @param pDrvIns The driver instance to detach.
415	*/
416	int pdmR3DrvDetach(PPDMDRVINS pDrvIns)
417	{
418	PDMDRV_ASSERT_DRVINS(pDrvIns);
419	LogFlow(("pdmR3DrvDetach: pDrvIns=%p '%s'/%d\n", pDrvIns, pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance));
420	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
421
422	/*
423	* Check that we're not doing this recursively, that could have unwanted sideeffects!
424	*/
425	if (pDrvIns->Internal.s.fDetaching)
426	{
427	AssertMsgFailed(("Recursive detach! '%s'/%d\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance));
428	return VINF_SUCCESS;
429	}
430
431	/*
432	* Check that we actually can detach this instance.
433	* The requirement is that the driver/device above have a detach method.
434	*/
435	if (pDrvIns->Internal.s.pUp
436	? !pDrvIns->Internal.s.pUp->pDrvReg->pfnDetach
437	: !pDrvIns->Internal.s.pLun->pDevIns->pDevReg->pfnDetach)
438	{
439	AssertMsgFailed(("Cannot detach driver instance because the driver/device above doesn't support it!\n"));
440	return VERR_PDM_DRIVER_DETACH_NOT_POSSIBLE;
441	}
442
443	/*
444	* Detach the bottom most driver until we've detached pDrvIns.
445	*/
446	pDrvIns->Internal.s.fDetaching = true;
447	PPDMDRVINS pCur;
448	do
449	{
450	/* find the driver to detach. */
451	pCur = pDrvIns;
452	while (pCur->Internal.s.pDown)
453	pCur = pCur->Internal.s.pDown;
454	LogFlow(("pdmR3DrvDetach: pCur=%p '%s'/%d\n", pCur, pCur->pDrvReg->szDriverName, pCur->iInstance));
455
456	/*
457	* Unlink it and notify parent.
458	*/
459	pCur->Internal.s.fDetaching = true;
460	if (pCur->Internal.s.pUp)
461	{
462	/* driver parent */
463	PPDMDRVINS pParent = pCur->Internal.s.pUp;
464	pCur->Internal.s.pUp = NULL;
465	pParent->Internal.s.pDown = NULL;
466
467	if (pParent->pDrvReg->pfnDetach)
468	pParent->pDrvReg->pfnDetach(pParent);
469
470	pParent->pDownBase = NULL;
471	}
472	else
473	{
474	/* device parent */
475	PPDMLUN pLun = pCur->Internal.s.pLun;
476	pLun->pTop = NULL;
477	if (pLun->pDevIns->pDevReg->pfnDetach)
478	pLun->pDevIns->pDevReg->pfnDetach(pLun->pDevIns, pLun->iLun);
479	}
480
481	/*
482	* Call destructor.
483	*/
484	pCur->pUpBase = NULL;
485	if (pCur->pDrvReg->pfnDestruct)
486	pCur->pDrvReg->pfnDestruct(pCur);
487
488	/*
489	* Free all resources allocated by the driver.
490	*/
491	/* Queues. */
492	int rc = PDMR3QueueDestroyDriver(pCur->Internal.s.pVM, pCur);
493	AssertRC(rc);
494	/* Timers. */
495	rc = TMR3TimerDestroyDriver(pCur->Internal.s.pVM, pCur);
496	AssertRC(rc);
497	/* SSM data units */
498	rc = SSMR3DeregisterDriver(pCur->Internal.s.pVM, pCur, NULL, 0);
499	AssertRC(rc);
500	/* Finally, the driver it self. */
501	ASMMemFill32(pCur, RT_OFFSETOF(PDMDRVINS, achInstanceData[pCur->pDrvReg->cbInstance]), 0xdeadd0d0);
502	MMR3HeapFree(pCur);
503
504	} while (pCur != pDrvIns);
505
506	return VINF_SUCCESS;
507	}
508
509
510	/** @copydoc PDMDRVHLP::pfnAttach */
511	static DECLCALLBACK(int) pdmR3DrvHlp_Attach(PPDMDRVINS pDrvIns, PPDMIBASE *ppBaseInterface)
512	{
513	PDMDRV_ASSERT_DRVINS(pDrvIns);
514	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
515	LogFlow(("pdmR3DrvHlp_Attach: caller='%s'/%d:\n",
516	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance));
517
518	/*
519	* Check that there isn't anything attached already.
520	*/
521	int rc;
522	if (!pDrvIns->Internal.s.pDown)
523	{
524	/*
525	* Get the attached driver configuration.
526	*/
527	PCFGMNODE pNode = CFGMR3GetChild(pDrvIns->Internal.s.pCfgHandle, "AttachedDriver");
528	if (pNode)
529	{
530	char *pszName;
531	rc = CFGMR3QueryStringAlloc(pNode, "Driver", &pszName);
532	if (VBOX_SUCCESS(rc))
533	{
534	/*
535	* Find the driver and allocate instance data.
536	*/
537	PVM pVM = pDrvIns->Internal.s.pVM;
538	PPDMDRV pDrv = pdmR3DrvLookup(pVM, pszName);
539	if (pDrv)
540	{
541	/* config node */
542	PCFGMNODE pConfigNode = CFGMR3GetChild(pNode, "Config");
543	if (!pConfigNode)
544	rc = CFGMR3InsertNode(pNode, "Config", &pConfigNode);
545	if (VBOX_SUCCESS(rc))
546	{
547	CFGMR3SetRestrictedRoot(pConfigNode);
548
549	size_t cb = RT_OFFSETOF(PDMDRVINS, achInstanceData[pDrv->pDrvReg->cbInstance]);
550	cb = RT_ALIGN_Z(cb, 16);
551	PPDMDRVINS pNew = (PPDMDRVINS)MMR3HeapAllocZ(pVM, MM_TAG_PDM_DRIVER, cb);
552	if (pNew)
553	{
554	/*
555	* Initialize the instance structure (declaration order).
556	*/
557	pNew->u32Version = PDM_DRVINS_VERSION;
558	pNew->Internal.s.pUp = pDrvIns;
559	pNew->Internal.s.pDown = NULL;
560	pNew->Internal.s.pLun = pDrvIns->Internal.s.pLun;
561	pNew->Internal.s.pDrv = pDrv;
562	pNew->Internal.s.pVM = pVM;
563	pNew->Internal.s.fDetaching = false;
564	pNew->Internal.s.pCfgHandle = pNode;
565	pNew->pDrvHlp = &g_pdmR3DrvHlp;
566	pNew->pDrvReg = pDrv->pDrvReg;
567	pNew->pCfgHandle = pConfigNode;
568	pNew->iInstance = pDrv->cInstances++;
569	pNew->pUpBase = &pDrvIns->IBase; /* This ain't safe, you can calc the pDrvIns of the up/down driver! */
570	pNew->pDownBase = NULL;
571	pNew->IBase.pfnQueryInterface = NULL;
572	pNew->pvInstanceData = &pNew->achInstanceData[0];
573
574	/*
575	* Hook it onto the chain and call the constructor.
576	*/
577	pDrvIns->Internal.s.pDown = pNew;
578	Log(("PDM: Constructing driver '%s' instance %d...\n", pNew->pDrvReg->szDriverName, pNew->iInstance));
579	rc = pDrv->pDrvReg->pfnConstruct(pNew, pNew->pCfgHandle);
580	if (VBOX_SUCCESS(rc))
581	{
582	*ppBaseInterface = &pNew->IBase;
583	rc = VINF_SUCCESS;
584	}
585	else
586	{
587	/*
588	* Unlink and free the data.
589	*/
590	pDrvIns->Internal.s.pDown = NULL;
591	ASMMemFill32(pNew, cb, 0xdeadd0d0);
592	MMR3HeapFree(pNew);
593	pDrv->cInstances--;
594	}
595	}
596	else
597	{
598	AssertMsgFailed(("Failed to allocate %d bytes for instantiating driver '%s'\n", cb, pszName));
599	rc = VERR_NO_MEMORY;
600	}
601	}
602	else
603	AssertMsgFailed(("Failed to create Config node! rc=%Vrc\n", rc));
604	}
605	else
606	{
607	AssertMsgFailed(("Driver '%s' wasn't found!\n", pszName));
608	rc = VERR_PDM_DRIVER_NOT_FOUND;
609	}
610	MMR3HeapFree(pszName);
611	}
612	else
613	{
614	AssertMsgFailed(("Query for string value of \"Driver\" -> %Vrc\n", rc));
615	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
616	rc = VERR_PDM_CFG_MISSING_DRIVER_NAME;
617	}
618	}
619	else
620	rc = VERR_PDM_NO_ATTACHED_DRIVER;
621	}
622	else
623	{
624	AssertMsgFailed(("Already got a driver attached. The driver should keep track of such things!\n"));
625	rc = VERR_PDM_DRIVER_ALREADY_ATTACHED;
626	}
627
628	LogFlow(("pdmR3DrvHlp_Attach: caller='%s'/%d: return %Vrc\n",
629	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc));
630	return rc;
631	}
632
633
634	/** @copydoc PDMDRVHLP::pfnDetach */
635	static DECLCALLBACK(int) pdmR3DrvHlp_Detach(PPDMDRVINS pDrvIns)
636	{
637	PDMDRV_ASSERT_DRVINS(pDrvIns);
638	LogFlow(("pdmR3DrvHlp_Detach: caller='%s'/%d:\n",
639	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance));
640	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
641
642	/*
643	* Anything attached?
644	*/
645	int rc;
646	if (pDrvIns->Internal.s.pDown)
647	{
648	rc = pdmR3DrvDetach(pDrvIns->Internal.s.pDown);
649	}
650	else
651	{
652	AssertMsgFailed(("Nothing attached!\n"));
653	rc = VERR_PDM_NO_DRIVER_ATTACHED;
654	}
655
656	LogFlow(("pdmR3DrvHlp_Detach: caller='%s'/%d: returns %Vrc\n",
657	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc));
658	return rc;
659	}
660
661
662	/** @copydoc PDMDRVHLP::pfnDetachSelf */
663	static DECLCALLBACK(int) pdmR3DrvHlp_DetachSelf(PPDMDRVINS pDrvIns)
664	{
665	PDMDRV_ASSERT_DRVINS(pDrvIns);
666	LogFlow(("pdmR3DrvHlp_DetachSelf: caller='%s'/%d:\n",
667	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance));
668	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
669
670	int rc = pdmR3DrvDetach(pDrvIns);
671
672	LogFlow(("pdmR3DrvHlp_Detach: returns %Vrc\n", rc)); /* pDrvIns is freed by now. */
673	return rc;
674	}
675
676
677	/** @copydoc PDMDRVHLP::pfnMountPrepare */
678	static DECLCALLBACK(int) pdmR3DrvHlp_MountPrepare(PPDMDRVINS pDrvIns, const char pszFilename, const char pszCoreDriver)
679	{
680	PDMDRV_ASSERT_DRVINS(pDrvIns);
681	LogFlow(("pdmR3DrvHlp_MountPrepare: caller='%s'/%d: pszFilename=%p:{%s} pszCoreDriver=%p:{%s}\n",
682	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, pszFilename, pszFilename, pszCoreDriver, pszCoreDriver));
683	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
684
685	/*
686	* Do the caller have anything attached below itself?
687	*/
688	if (pDrvIns->Internal.s.pDown)
689	{
690	AssertMsgFailed(("Cannot prepare a mount when something's attached to you!\n"));
691	return VERR_PDM_DRIVER_ALREADY_ATTACHED;
692	}
693
694	/*
695	* We're asked to prepare, so we'll start off by nuking the
696	* attached configuration tree.
697	*/
698	PCFGMNODE pNode = CFGMR3GetChild(pDrvIns->Internal.s.pCfgHandle, "AttachedDriver");
699	if (pNode)
700	CFGMR3RemoveNode(pNode);
701
702	/*
703	* If there is no core driver, we'll have to probe for it.
704	*/
705	if (!pszCoreDriver)
706	{
707	/** @todo implement image probing. */
708	AssertReleaseMsgFailed(("Not implemented!\n"));
709	return VERR_NOT_IMPLEMENTED;
710	}
711
712	/*
713	* Construct the basic attached driver configuration.
714	*/
715	int rc = CFGMR3InsertNode(pDrvIns->Internal.s.pCfgHandle, "AttachedDriver", &pNode);
716	if (VBOX_SUCCESS(rc))
717	{
718	rc = CFGMR3InsertString(pNode, "Driver", pszCoreDriver);
719	if (VBOX_SUCCESS(rc))
720	{
721	PCFGMNODE pCfg;
722	rc = CFGMR3InsertNode(pNode, "Config", &pCfg);
723	if (VBOX_SUCCESS(rc))
724	{
725	rc = CFGMR3InsertString(pCfg, "Path", pszFilename);
726	if (VBOX_SUCCESS(rc))
727	{
728	LogFlow(("pdmR3DrvHlp_MountPrepare: caller='%s'/%d: returns %Vrc (Driver=%s)\n",
729	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc, pszCoreDriver));
730	return rc;
731	}
732	else
733	AssertMsgFailed(("Path string insert failed, rc=%Vrc\n", rc));
734	}
735	else
736	AssertMsgFailed(("Config node failed, rc=%Vrc\n", rc));
737	}
738	else
739	AssertMsgFailed(("Driver string insert failed, rc=%Vrc\n", rc));
740	CFGMR3RemoveNode(pNode);
741	}
742	else
743	AssertMsgFailed(("AttachedDriver node insert failed, rc=%Vrc\n", rc));
744
745	LogFlow(("pdmR3DrvHlp_MountPrepare: caller='%s'/%d: returns %Vrc\n",
746	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc));
747	return rc;
748	}
749
750
751	/** @copydoc PDMDRVHLP::pfnAssertEMT */
752	static DECLCALLBACK(bool) pdmR3DrvHlp_AssertEMT(PPDMDRVINS pDrvIns, const char pszFile, unsigned iLine, const char pszFunction)
753	{
754	PDMDRV_ASSERT_DRVINS(pDrvIns);
755	if (VM_IS_EMT(pDrvIns->Internal.s.pVM))
756	return true;
757
758	char szMsg[100];
759	RTStrPrintf(szMsg, sizeof(szMsg), "AssertEMT '%s'/%d\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance);
760	AssertMsg1(szMsg, iLine, pszFile, pszFunction);
761	AssertBreakpoint();
762	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
763	return false;
764	}
765
766
767	/** @copydoc PDMDRVHLP::pfnAssertOther */
768	static DECLCALLBACK(bool) pdmR3DrvHlp_AssertOther(PPDMDRVINS pDrvIns, const char pszFile, unsigned iLine, const char pszFunction)
769	{
770	PDMDRV_ASSERT_DRVINS(pDrvIns);
771	if (!VM_IS_EMT(pDrvIns->Internal.s.pVM))
772	return true;
773
774	char szMsg[100];
775	RTStrPrintf(szMsg, sizeof(szMsg), "AssertOther '%s'/%d\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance);
776	AssertMsg1(szMsg, iLine, pszFile, pszFunction);
777	AssertBreakpoint();
778	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
779	return false;
780	}
781
782
783	/** @copydoc PDMDRVHLP::pfnVMSetError */
784	static DECLCALLBACK(int) pdmR3DrvHlp_VMSetError(PPDMDRVINS pDrvIns, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
785	{
786	PDMDRV_ASSERT_DRVINS(pDrvIns);
787	va_list args;
788	va_start(args, pszFormat);
789	int rc2 = VMSetErrorV(pDrvIns->Internal.s.pVM, rc, RT_SRC_POS_ARGS, pszFormat, args); Assert(rc2 == rc); NOREF(rc2);
790	va_end(args);
791	return rc;
792	}
793
794
795	/** @copydoc PDMDRVHLP::pfnVMSetErrorV */
796	static DECLCALLBACK(int) pdmR3DrvHlp_VMSetErrorV(PPDMDRVINS pDrvIns, int rc, RT_SRC_POS_DECL, const char *pszFormat, va_list va)
797	{
798	PDMDRV_ASSERT_DRVINS(pDrvIns);
799	int rc2 = VMSetErrorV(pDrvIns->Internal.s.pVM, rc, RT_SRC_POS_ARGS, pszFormat, va); Assert(rc2 == rc); NOREF(rc2);
800	return rc;
801	}
802
803
804	/** @copydoc PDMDRVHLP::pfnPDMQueueCreate */
805	static DECLCALLBACK(int) pdmR3DrvHlp_PDMQueueCreate(PPDMDRVINS pDrvIns, RTUINT cbItem, RTUINT cItems, uint32_t cMilliesInterval, PFNPDMQUEUEDRV pfnCallback, PPDMQUEUE *ppQueue)
806	{
807	PDMDRV_ASSERT_DRVINS(pDrvIns);
808	LogFlow(("pdmR3DrvHlp_PDMQueueCreate: caller='%s'/%d: cbItem=%d cItems=%d cMilliesInterval=%d pfnCallback=%p ppQueue=%p\n",
809	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, cbItem, cItems, cMilliesInterval, pfnCallback, ppQueue, ppQueue));
810	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
811
812	int rc = PDMR3QueueCreateDriver(pDrvIns->Internal.s.pVM, pDrvIns, cbItem, cItems, cMilliesInterval, pfnCallback, ppQueue);
813
814	LogFlow(("pdmR3DrvHlp_PDMQueueCreate: caller='%s'/%d: returns %Vrc ppQueue=%p\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc, ppQueue));
815	return rc;
816	}
817
818
819
820	/** @copydoc PDMDRVHLP::pfnPDMPollerRegister */
821	static DECLCALLBACK(int) pdmR3DrvHlp_PDMPollerRegister(PPDMDRVINS pDrvIns, PFNPDMDRVPOLLER pfnPoller)
822	{
823	PDMDRV_ASSERT_DRVINS(pDrvIns);
824	LogFlow(("pdmR3DrvHlp_PDMPollerRegister: caller='%s'/%d: pfnPoller=%p\n",
825	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, pfnPoller));
826	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
827
828	int rc = VINF_SUCCESS;
829	PVM pVM = pDrvIns->Internal.s.pVM;
830	if (pVM->pdm.s.cPollers < ELEMENTS(pVM->pdm.s.apfnPollers))
831	{
832	pVM->pdm.s.apfnPollers[pVM->pdm.s.cPollers] = pfnPoller;
833	pVM->pdm.s.aDrvInsPollers[pVM->pdm.s.cPollers] = pDrvIns;
834	pVM->pdm.s.cPollers++;
835	if (pVM->pdm.s.cPollers == 1)
836	TMTimerSetMillies(pVM->pdm.s.pTimerPollers, 5);
837	}
838	else
839	{
840	AssertMsgFailed(("Too many pollers!\n"));
841	rc = VERR_INTERNAL_ERROR;
842	}
843
844	LogFlow(("pdmR3DrvHlp_PDMPollerRegister: caller='%s'/%d: returns %Vrc\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc));
845	return rc;
846	}
847
848
849	/** @copydoc PDMDRVHLP::pfnTMGetVirtualFreq */
850	static DECLCALLBACK(uint64_t) pdmR3DrvHlp_TMGetVirtualFreq(PPDMDRVINS pDrvIns)
851	{
852	PDMDRV_ASSERT_DRVINS(pDrvIns);
853
854	return TMVirtualGetFreq(pDrvIns->Internal.s.pVM);
855	}
856
857
858	/** @copydoc PDMDRVHLP::pfnTMGetVirtualTime */
859	static DECLCALLBACK(uint64_t) pdmR3DrvHlp_TMGetVirtualTime(PPDMDRVINS pDrvIns)
860	{
861	PDMDRV_ASSERT_DRVINS(pDrvIns);
862
863	return TMVirtualGet(pDrvIns->Internal.s.pVM);
864	}
865
866	/** @copydoc PDMDRVHLP::pfnTMTimerCreate */
867	static DECLCALLBACK(int) pdmR3DrvHlp_TMTimerCreate(PPDMDRVINS pDrvIns, TMCLOCK enmClock, PFNTMTIMERDRV pfnCallback, const char *pszDesc, PPTMTIMERHC ppTimer)
868	{
869	PDMDRV_ASSERT_DRVINS(pDrvIns);
870	LogFlow(("pdmR3DrvHlp_TMTimerCreate: caller='%s'/%d: enmClock=%d pfnCallback=%p pszDesc=%p:{%s} ppTimer=%p\n",
871	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, enmClock, pfnCallback, pszDesc, pszDesc, ppTimer));
872
873	int rc = TMR3TimerCreateDriver(pDrvIns->Internal.s.pVM, pDrvIns, enmClock, pfnCallback, pszDesc, ppTimer);
874
875	LogFlow(("pdmR3DrvHlp_TMTimerCreate: caller='%s'/%d: returns %Vrc ppTimer=%p\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc, ppTimer));
876	return rc;
877	}
878
879
880
881	/** @copydoc PDMDRVHLP::pfnSSMRegister */
882	static DECLCALLBACK(int) pdmR3DrvHlp_SSMRegister(PPDMDRVINS pDrvIns, const char *pszName, uint32_t u32Instance, uint32_t u32Version, size_t cbGuess,
883	PFNSSMDRVSAVEPREP pfnSavePrep, PFNSSMDRVSAVEEXEC pfnSaveExec, PFNSSMDRVSAVEDONE pfnSaveDone,
884	PFNSSMDRVLOADPREP pfnLoadPrep, PFNSSMDRVLOADEXEC pfnLoadExec, PFNSSMDRVLOADDONE pfnLoadDone)
885	{
886	PDMDRV_ASSERT_DRVINS(pDrvIns);
887	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
888	LogFlow(("pdmR3DrvHlp_SSMRegister: caller='%s'/%d: pszName=%p:{%s} u32Instance=%#x u32Version=#x cbGuess=%#x pfnSavePrep=%p pfnSaveExec=%p pfnSaveDone=%p pszLoadPrep=%p pfnLoadExec=%p pfnLoaddone=%p\n",
889	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, pszName, pszName, u32Instance, u32Version, cbGuess, pfnSavePrep, pfnSaveExec, pfnSaveDone, pfnLoadPrep, pfnLoadExec, pfnLoadDone));
890
891	int rc = SSMR3RegisterDriver(pDrvIns->Internal.s.pVM, pDrvIns, pszName, u32Instance, u32Version, cbGuess,
892	pfnSavePrep, pfnSaveExec, pfnSaveDone,
893	pfnLoadPrep, pfnLoadExec, pfnLoadDone);
894
895	LogFlow(("pdmR3DrvHlp_SSMRegister: caller='%s'/%d: returns %Vrc\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc));
896	return rc;
897	}
898
899
900	/** @copydoc PDMDRVHLP::pfnSSMDeregister */
901	static DECLCALLBACK(int) pdmR3DrvHlp_SSMDeregister(PPDMDRVINS pDrvIns, const char *pszName, uint32_t u32Instance)
902	{
903	PDMDRV_ASSERT_DRVINS(pDrvIns);
904	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
905	LogFlow(("pdmR3DrvHlp_SSMDeregister: caller='%s'/%d: pszName=%p:{%s} u32Instance=%#x\n",
906	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, pszName, pszName, u32Instance));
907
908	int rc = SSMR3DeregisterDriver(pDrvIns->Internal.s.pVM, pDrvIns, pszName, u32Instance);
909
910	LogFlow(("pdmR3DrvHlp_SSMDeregister: caller='%s'/%d: returns %Vrc\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc));
911	return rc;
912	}
913
914
915	/** @copydoc PDMDRVHLP::pfnSTAMRegister */
916	static DECLCALLBACK(void) pdmR3DrvHlp_STAMRegister(PPDMDRVINS pDrvIns, void pvSample, STAMTYPE enmType, const char pszName, STAMUNIT enmUnit, const char *pszDesc)
917	{
918	PDMDRV_ASSERT_DRVINS(pDrvIns);
919	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
920
921	STAM_REG(pDrvIns->Internal.s.pVM, pvSample, enmType, pszName, enmUnit, pszDesc);
922	/** @todo track the samples so they can be dumped & deregistered when the driver instance is destroyed.
923	* For now we just have to be careful not to use this call for drivers which can be unloaded. */
924	}
925
926
927	/** @copydoc PDMDRVHLP::pfnSTAMRegisterF */
928	static DECLCALLBACK(void) pdmR3DrvHlp_STAMRegisterF(PPDMDRVINS pDrvIns, void *pvSample, STAMTYPE enmType, STAMVISIBILITY enmVisibility,
929	STAMUNIT enmUnit, const char pszDesc, const char pszName, ...)
930	{
931	PDMDRV_ASSERT_DRVINS(pDrvIns);
932	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
933
934	va_list args;
935	va_start(args, pszName);
936	int rc = STAMR3RegisterV(pDrvIns->Internal.s.pVM, pvSample, enmType, enmVisibility, enmUnit, pszDesc, pszName, args);
937	va_end(args);
938	AssertRC(rc);
939	}
940
941
942	/** @copydoc PDMDRVHLP::pfnSTAMRegisterV */
943	static DECLCALLBACK(void) pdmR3DrvHlp_STAMRegisterV(PPDMDRVINS pDrvIns, void *pvSample, STAMTYPE enmType, STAMVISIBILITY enmVisibility,
944	STAMUNIT enmUnit, const char pszDesc, const char pszName, va_list args)
945	{
946	PDMDRV_ASSERT_DRVINS(pDrvIns);
947	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
948
949	int rc = STAMR3RegisterV(pDrvIns->Internal.s.pVM, pvSample, enmType, enmVisibility, enmUnit, pszDesc, pszName, args);
950	AssertRC(rc);
951	}
952
953
954	/** @copydoc PDMDRVHLP::pfnSUPCallVMMR0Ex */
955	static DECLCALLBACK(int) pdmR3DrvHlp_SUPCallVMMR0Ex(PPDMDRVINS pDrvIns, unsigned uOperation, void *pvArg, unsigned cbArg)
956	{
957	PDMDRV_ASSERT_DRVINS(pDrvIns);
958	LogFlow(("pdmR3DrvHlp_SSMCallVMMR0Ex: caller='%s'/%d: uOperation=%u pvArg=%p cbArg=%d\n",
959	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, uOperation, pvArg, cbArg));
960	int rc;
961	if ( uOperation >= VMMR0_DO_SRV_START
962	&& uOperation < VMMR0_DO_SRV_END)
963	rc = SUPCallVMMR0Ex(pDrvIns->Internal.s.pVM->pVMR0, uOperation, pvArg, cbArg);
964	else
965	{
966	AssertMsgFailed(("Invalid uOperation=%u\n", uOperation));
967	rc = VERR_INVALID_PARAMETER;
968	}
969
970	LogFlow(("pdmR3DrvHlp_SSMDeregister: caller='%s'/%d: returns %Vrc\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc));
971	return rc;
972	}
973

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source: vbox/trunk/src/VBox/VMM/PDMDriver.cpp@ 1995

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