PDMDriver.cpp@ 1

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1	/** @file
2	*
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.alldomusa.eu.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	#include <string.h>
46
47
48	/*******************************************************************************
49	* Structures and Typedefs *
50	*******************************************************************************/
51	/**
52	* Internal callback structure pointer.
53	* The main purpose is to define the extra data we associate
54	* with PDMDRVREGCB so we can find the VM instance and so on.
55	*/
56	typedef struct PDMDRVREGCBINT
57	{
58	/** The callback structure. */
59	PDMDRVREGCB Core;
60	/** A bit of padding. */
61	uint32_t u32[4];
62	/** VM Handle. */
63	PVM pVM;
64	} PDMDRVREGCBINT, *PPDMDRVREGCBINT;
65	typedef const PDMDRVREGCBINT *PCPDMDRVREGCBINT;
66
67
68	/*******************************************************************************
69	* Internal Functions *
70	*******************************************************************************/
71	/** @name Driver Helpers
72	* @{
73	*/
74	static DECLCALLBACK(int) pdmR3DrvHlp_Attach(PPDMDRVINS pDrvIns, PPDMIBASE *ppBaseInterface);
75	static DECLCALLBACK(int) pdmR3DrvHlp_Detach(PPDMDRVINS pDrvIns);
76	static DECLCALLBACK(int) pdmR3DrvHlp_DetachSelf(PPDMDRVINS pDrvIns);
77	static DECLCALLBACK(int) pdmR3DrvHlp_MountPrepare(PPDMDRVINS pDrvIns, const char pszFilename, const char pszCoreDriver);
78	static DECLCALLBACK(int) pdmR3DrvHlp_VMSetError(PPDMDRVINS pDrvIns, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...);
79	static DECLCALLBACK(int) pdmR3DrvHlp_VMSetErrorV(PPDMDRVINS pDrvIns, int rc, RT_SRC_POS_DECL, const char *pszFormat, va_list va);
80	static DECLCALLBACK(bool) pdmR3DrvHlp_AssertEMT(PPDMDRVINS pDrvIns, const char pszFile, unsigned iLine, const char pszFunction);
81	static DECLCALLBACK(bool) pdmR3DrvHlp_AssertOther(PPDMDRVINS pDrvIns, const char pszFile, unsigned iLine, const char pszFunction);
82	static DECLCALLBACK(int) pdmR3DrvHlp_PDMQueueCreate(PPDMDRVINS pDrvIns, RTUINT cbItem, RTUINT cItems, uint32_t cMilliesInterval, PFNPDMQUEUEDRV pfnCallback, PPDMQUEUE *ppQueue);
83	static DECLCALLBACK(int) pdmR3DrvHlp_PDMPollerRegister(PPDMDRVINS pDrvIns, PFNPDMDRVPOLLER pfnPoller);
84	static DECLCALLBACK(uint64_t) pdmR3DrvHlp_TMGetVirtualFreq(PPDMDRVINS pDrvIns);
85	static DECLCALLBACK(uint64_t) pdmR3DrvHlp_TMGetVirtualTime(PPDMDRVINS pDrvIns);
86	static DECLCALLBACK(int) pdmR3DrvHlp_TMTimerCreate(PPDMDRVINS pDrvIns, TMCLOCK enmClock, PFNTMTIMERDRV pfnCallback, const char *pszDesc, PPTMTIMERHC ppTimer);
87	static DECLCALLBACK(int) pdmR3DrvHlp_SSMRegister(PPDMDRVINS pDrvIns, const char *pszName, uint32_t u32Instance, uint32_t u32Version, size_t cbGuess,
88	PFNSSMDRVSAVEPREP pfnSavePrep, PFNSSMDRVSAVEEXEC pfnSaveExec, PFNSSMDRVSAVEDONE pfnSaveDone,
89	PFNSSMDRVLOADPREP pfnLoadPrep, PFNSSMDRVLOADEXEC pfnLoadExec, PFNSSMDRVLOADDONE pfnLoadDone);
90	static DECLCALLBACK(int) pdmR3DrvHlp_SSMDeregister(PPDMDRVINS pDrvIns, const char *pszName, uint32_t u32Instance);
91	static DECLCALLBACK(void) pdmR3DrvHlp_STAMRegister(PPDMDRVINS pDrvIns, void pvSample, STAMTYPE enmType, const char pszName, STAMUNIT enmUnit, const char *pszDesc);
92	static DECLCALLBACK(void) pdmR3DrvHlp_STAMRegisterF(PPDMDRVINS pDrvIns, void pvSample, STAMTYPE enmType, STAMVISIBILITY enmVisibility, STAMUNIT enmUnit, const char pszDesc, const char *pszName, ...);
93	static DECLCALLBACK(void) pdmR3DrvHlp_STAMRegisterV(PPDMDRVINS pDrvIns, void pvSample, STAMTYPE enmType, STAMVISIBILITY enmVisibility, STAMUNIT enmUnit, const char pszDesc, const char *pszName, va_list args);
94	static DECLCALLBACK(int) pdmR3DrvHlp_SUPCallVMMR0Ex(PPDMDRVINS pDrvIns, unsigned uOperation, void *pvArg, unsigned cbArg);
95
96	/** @def PDMDRV_ASSERT_DRVINS
97	* Asserts the validity of the driver instance.
98	*/
99	#ifdef VBOX_STRICT
100	# define PDMDRV_ASSERT_DRVINS(pDrvIns) do { Assert(pDrvIns); Assert(pDrvIns->u32Version == PDM_DRVINS_VERSION); Assert(pDrvIns->pvInstanceData == (void *)&pDrvIns->achInstanceData[0]); } while (0)
101	#else
102	# define PDMDRV_ASSERT_DRVINS(pDrvIns) do { } while (0)
103	#endif
104	/** @} */
105
106	static DECLCALLBACK(int) pdmR3DrvRegister(PCPDMDRVREGCB pCallbacks, PCPDMDRVREG pDrvReg);
107	static int pdmR3DrvLoad(PVM pVM, PPDMDRVREGCBINT pRegCB, const char pszFilename, const char pszName);
108
109
110	/*******************************************************************************
111	* Global Variables *
112	*******************************************************************************/
113	/**
114	* The driver helper structure.
115	*/
116	const PDMDRVHLP g_pdmR3DrvHlp =
117	{
118	PDM_DRVHLP_VERSION,
119	pdmR3DrvHlp_Attach,
120	pdmR3DrvHlp_Detach,
121	pdmR3DrvHlp_DetachSelf,
122	pdmR3DrvHlp_MountPrepare,
123	pdmR3DrvHlp_AssertEMT,
124	pdmR3DrvHlp_AssertOther,
125	pdmR3DrvHlp_VMSetError,
126	pdmR3DrvHlp_VMSetErrorV,
127	pdmR3DrvHlp_PDMQueueCreate,
128	pdmR3DrvHlp_PDMPollerRegister,
129	pdmR3DrvHlp_TMGetVirtualFreq,
130	pdmR3DrvHlp_TMGetVirtualTime,
131	pdmR3DrvHlp_TMTimerCreate,
132	pdmR3DrvHlp_SSMRegister,
133	pdmR3DrvHlp_SSMDeregister,
134	pdmR3DrvHlp_STAMRegister,
135	pdmR3DrvHlp_STAMRegisterF,
136	pdmR3DrvHlp_STAMRegisterV,
137	pdmR3DrvHlp_SUPCallVMMR0Ex,
138	0 /* the end */
139	};
140
141
142	/**
143	* Register external drivers
144	*
145	* @returns VBox status code.
146	* @param pVM The VM to operate on.
147	* @param pfnCallback Driver registration callback
148	*/
149	PDMR3DECL(int) PDMR3RegisterDrivers(PVM pVM, FNPDMVBOXDRIVERSREGISTER pfnCallback)
150	{
151	/*
152	* The registration callbacks.
153	*/
154	PDMDRVREGCBINT RegCB;
155	RegCB.Core.u32Version = PDM_DRVREG_CB_VERSION;
156	RegCB.Core.pfnRegister = pdmR3DrvRegister;
157	RegCB.pVM = pVM;
158
159	int rc = pfnCallback(&RegCB.Core, VBOX_VERSION);
160	if (VBOX_FAILURE(rc))
161	AssertMsgFailed(("VBoxDriversRegister failed with rc=%Vrc\n"));
162
163	return rc;
164	}
165
166	/**
167	* This function will initialize the drivers for this VM instance.
168	*
169	* First of all this mean loading the builtin drivers and letting them
170	* register themselves. Beyond that any additional driver modules are
171	* loaded and called for registration.
172	*
173	* @returns VBox status code.
174	* @param pVM VM Handle.
175	*/
176	int pdmR3DrvInit(PVM pVM)
177	{
178	LogFlow(("pdmR3DrvInit:\n"));
179
180	AssertRelease(!(RT_OFFSETOF(PDMDRVINS, achInstanceData) & 15));
181	PPDMDRVINS pDrvInsAssert;
182	AssertRelease(sizeof(pDrvInsAssert->Internal.s) <= sizeof(pDrvInsAssert->Internal.padding));
183
184	/*
185	* The registration callbacks.
186	*/
187	PDMDRVREGCBINT RegCB;
188	RegCB.Core.u32Version = PDM_DRVREG_CB_VERSION;
189	RegCB.Core.pfnRegister = pdmR3DrvRegister;
190	RegCB.pVM = pVM;
191
192	/*
193	* Load the builtin module
194	*/
195	PCFGMNODE pDriversNode = CFGMR3GetChild(CFGMR3GetRoot(pVM), "PDM/Drivers");
196	bool fLoadBuiltin;
197	int rc = CFGMR3QueryBool(pDriversNode, "LoadBuiltin", &fLoadBuiltin);
198	if (rc == VERR_CFGM_VALUE_NOT_FOUND \|\| rc == VERR_CFGM_NO_PARENT)
199	fLoadBuiltin = true;
200	else if (VBOX_FAILURE(rc))
201	{
202	AssertMsgFailed(("Configuration error: Querying boolean \"LoadBuiltin\" failed with %Vrc\n", rc));
203	return rc;
204	}
205	if (fLoadBuiltin)
206	{
207	/* make filename */
208	char *pszFilename = pdmR3FileR3("VBoxDD");
209	if (!pszFilename)
210	return VERR_NO_TMP_MEMORY;
211	rc = pdmR3DrvLoad(pVM, &RegCB, pszFilename, "VBoxDD");
212	RTMemTmpFree(pszFilename);
213	if (VBOX_FAILURE(rc))
214	return rc;
215	}
216
217	/*
218	* Load additional driver modules.
219	*/
220	for (PCFGMNODE pCur = CFGMR3GetFirstChild(pDriversNode); pCur; pCur = CFGMR3GetNextChild(pCur))
221	{
222	/*
223	* Get the name and path.
224	*/
225	char szName[PDMMOD_NAME_LEN];
226	rc = CFGMR3GetName(pCur, &szName[0], sizeof(szName));
227	if (rc == VERR_CFGM_NOT_ENOUGH_SPACE)
228	{
229	AssertMsgFailed(("configuration error: The module name is too long, cchName=%d.\n", CFGMR3GetNameLen(pCur)));
230	return VERR_PDM_MODULE_NAME_TOO_LONG;
231	}
232	else if (VBOX_FAILURE(rc))
233	{
234	AssertMsgFailed(("CFGMR3GetName -> %Vrc.\n", rc));
235	return rc;
236	}
237
238	/* the path is optional, if no path the module name + path is used. */
239	char szFilename[RTPATH_MAX];
240	rc = CFGMR3QueryString(pCur, "Path", &szFilename[0], sizeof(szFilename));
241	if (rc == VERR_CFGM_VALUE_NOT_FOUND \|\| rc == VERR_CFGM_NO_PARENT)
242	strcpy(szFilename, szName);
243	else if (VBOX_FAILURE(rc))
244	{
245	AssertMsgFailed(("configuration error: Failure to query the module path, rc=%Vrc.\n", rc));
246	return rc;
247	}
248
249	/* prepend path? */
250	if (!RTPathHavePath(szFilename))
251	{
252	char *psz = pdmR3FileR3(szFilename);
253	if (!psz)
254	return VERR_NO_TMP_MEMORY;
255	size_t cch = strlen(psz) + 1;
256	if (cch > sizeof(szFilename))
257	{
258	RTMemTmpFree(psz);
259	AssertMsgFailed(("Filename too long! cch=%d '%s'\n", cch, psz));
260	return VERR_FILENAME_TOO_LONG;
261	}
262	memcpy(szFilename, psz, cch);
263	RTMemTmpFree(psz);
264	}
265
266	/*
267	* Load the module and register it's drivers.
268	*/
269	rc = pdmR3DrvLoad(pVM, &RegCB, szFilename, szName);
270	if (VBOX_FAILURE(rc))
271	return rc;
272	}
273
274	LogFlow(("pdmR3DrvInit: returns VINF_SUCCESS\n"));
275	return VINF_SUCCESS;
276	}
277
278
279	/**
280	* Loads one driver module and call the registration entry point.
281	*
282	* @returns VBox status code.
283	* @param pVM VM handle.
284	* @param pRegCB The registration callback stuff.
285	* @param pszFilename Module filename.
286	* @param pszName Module name.
287	*/
288	static int pdmR3DrvLoad(PVM pVM, PPDMDRVREGCBINT pRegCB, const char pszFilename, const char pszName)
289	{
290	/*
291	* Load it.
292	*/
293	int rc = pdmR3LoadR3(pVM, pszFilename, pszName);
294	if (VBOX_SUCCESS(rc))
295	{
296	/*
297	* Get the registration export and call it.
298	*/
299	FNPDMVBOXDRIVERSREGISTER *pfnVBoxDriversRegister;
300	rc = PDMR3GetSymbolR3(pVM, pszName, "VBoxDriversRegister", (void **)&pfnVBoxDriversRegister);
301	if (VBOX_SUCCESS(rc))
302	{
303	Log(("PDM: Calling VBoxDriversRegister (%p) of %s (%s)\n", pfnVBoxDriversRegister, pszName, pszFilename));
304	rc = pfnVBoxDriversRegister(&pRegCB->Core, VBOX_VERSION);
305	if (VBOX_SUCCESS(rc))
306	Log(("PDM: Successfully loaded driver module %s (%s).\n", pszName, pszFilename));
307	else
308	AssertMsgFailed(("VBoxDriversRegister failed with rc=%Vrc\n"));
309	}
310	else
311	{
312	AssertMsgFailed(("Failed to locate 'VBoxDriversRegister' in %s (%s) rc=%Vrc\n", pszName, pszFilename, rc));
313	if (rc == VERR_SYMBOL_NOT_FOUND)
314	rc = VERR_PDM_NO_REGISTRATION_EXPORT;
315	}
316	}
317	else
318	AssertMsgFailed(("Failed to load %s (%s) rc=%Vrc!\n", pszName, pszFilename, rc));
319	return rc;
320	}
321
322
323	/** @copydoc PDMDRVREGCB::pfnRegister */
324	static DECLCALLBACK(int) pdmR3DrvRegister(PCPDMDRVREGCB pCallbacks, PCPDMDRVREG pDrvReg)
325	{
326	/*
327	* Validate the registration structure.
328	*/
329	Assert(pDrvReg);
330	if (pDrvReg->u32Version != PDM_DRVREG_VERSION)
331	{
332	AssertMsgFailed(("Unknown struct version %#x!\n", pDrvReg->u32Version));
333	return VERR_PDM_UNKNOWN_DRVREG_VERSION;
334	}
335	if ( !pDrvReg->szDriverName[0]
336	\|\| strlen(pDrvReg->szDriverName) >= sizeof(pDrvReg->szDriverName))
337	{
338	AssertMsgFailed(("Invalid name '%s'\n", pDrvReg->szDriverName));
339	return VERR_PDM_INVALID_DRIVER_REGISTRATION;
340	}
341	if ((pDrvReg->fFlags & PDM_DRVREG_FLAGS_HOST_BITS_MASK) != PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT)
342	{
343	AssertMsgFailed(("Invalid host bits flags! fFlags=%#x (Driver %s)\n", pDrvReg->fFlags, pDrvReg->szDriverName));
344	return VERR_PDM_INVALID_DRIVER_HOST_BITS;
345	}
346	if (pDrvReg->cMaxInstances <= 0)
347	{
348	AssertMsgFailed(("Max instances %u! (Driver %s)\n", pDrvReg->cMaxInstances, pDrvReg->szDriverName));
349	return VERR_PDM_INVALID_DRIVER_REGISTRATION;
350	}
351	if (pDrvReg->cbInstance > _1M)
352	{
353	AssertMsgFailed(("Instance size above 1MB, %d bytes! (Driver %s)\n", pDrvReg->cbInstance, pDrvReg->szDriverName));
354	return VERR_PDM_INVALID_DRIVER_REGISTRATION;
355	}
356	if (!pDrvReg->pfnConstruct)
357	{
358	AssertMsgFailed(("No constructore! (Driver %s)\n", pDrvReg->szDriverName));
359	return VERR_PDM_INVALID_DRIVER_REGISTRATION;
360	}
361
362	/*
363	* Check for duplicate and find FIFO entry at the same time.
364	*/
365	PCPDMDRVREGCBINT pRegCB = (PCPDMDRVREGCBINT)pCallbacks;
366	PPDMDRV pDrvPrev = NULL;
367	PPDMDRV pDrv = pRegCB->pVM->pdm.s.pDrvs;
368	for (; pDrv; pDrvPrev = pDrv, pDrv = pDrv->pNext)
369	{
370	if (!strcmp(pDrv->pDrvReg->szDriverName, pDrvReg->szDriverName))
371	{
372	AssertMsgFailed(("Driver '%s' already exists\n", pDrvReg->szDriverName));
373	return VERR_PDM_DRIVER_NAME_CLASH;
374	}
375	}
376
377	/*
378	* Allocate new driver structure and insert it into the list.
379	*/
380	pDrv = (PPDMDRV)MMR3HeapAlloc(pRegCB->pVM, MM_TAG_PDM_DRIVER, sizeof(*pDrv));
381	if (pDrv)
382	{
383	pDrv->pNext = NULL;
384	pDrv->cInstances = 0;
385	pDrv->pDrvReg = pDrvReg;
386
387	if (pDrvPrev)
388	pDrvPrev->pNext = pDrv;
389	else
390	pRegCB->pVM->pdm.s.pDrvs = pDrv;
391	Log(("PDM: Registered driver '%s'\n", pDrvReg->szDriverName));
392	return VINF_SUCCESS;
393	}
394	return VERR_NO_MEMORY;
395	}
396
397
398	/**
399	* Lookups a driver structure by name.
400	* @internal
401	*/
402	PPDMDRV pdmR3DrvLookup(PVM pVM, const char *pszName)
403	{
404	for (PPDMDRV pDrv = pVM->pdm.s.pDrvs; pDrv; pDrv = pDrv->pNext)
405	if (!strcmp(pDrv->pDrvReg->szDriverName, pszName))
406	return pDrv;
407	return NULL;
408	}
409
410
411	/**
412	* Detaches a driver from whatever it's attached to.
413	* This will of course lead to the destruction of the driver and all drivers below it in the chain.
414	*
415	* @returns VINF_SUCCESS
416	* @param pDrvIns The driver instance to detach.
417	*/
418	int pdmR3DrvDetach(PPDMDRVINS pDrvIns)
419	{
420	PDMDRV_ASSERT_DRVINS(pDrvIns);
421	LogFlow(("pdmR3DrvDetach: pDrvIns=%p '%s'/%d\n", pDrvIns, pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance));
422	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
423
424	/*
425	* Check that we're not doing this recursively, that could have unwanted sideeffects!
426	*/
427	if (pDrvIns->Internal.s.fDetaching)
428	{
429	AssertMsgFailed(("Recursive detach! '%s'/%d\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance));
430	return VINF_SUCCESS;
431	}
432
433	/*
434	* Check that we actually can detach this instance.
435	* The requirement is that the driver/device above have a detach method.
436	*/
437	if (pDrvIns->Internal.s.pUp
438	? !pDrvIns->Internal.s.pUp->pDrvReg->pfnDetach
439	: !pDrvIns->Internal.s.pLun->pDevIns->pDevReg->pfnDetach)
440	{
441	AssertMsgFailed(("Cannot detach driver instance because the driver/device above doesn't support it!\n"));
442	return VERR_PDM_DRIVER_DETACH_NOT_POSSIBLE;
443	}
444
445	/*
446	* Detach the bottom most driver until we've detached pDrvIns.
447	*/
448	pDrvIns->Internal.s.fDetaching = true;
449	PPDMDRVINS pCur;
450	do
451	{
452	/* find the driver to detach. */
453	pCur = pDrvIns;
454	while (pCur->Internal.s.pDown)
455	pCur = pCur->Internal.s.pDown;
456	LogFlow(("pdmR3DrvDetach: pCur=%p '%s'/%d\n", pCur, pCur->pDrvReg->szDriverName, pCur->iInstance));
457
458	/*
459	* Unlink it and notify parent.
460	*/
461	pCur->Internal.s.fDetaching = true;
462	if (pCur->Internal.s.pUp)
463	{
464	/* driver parent */
465	PPDMDRVINS pParent = pCur->Internal.s.pUp;
466	pCur->Internal.s.pUp = NULL;
467	pParent->Internal.s.pDown = NULL;
468
469	if (pParent->pDrvReg->pfnDetach)
470	pParent->pDrvReg->pfnDetach(pParent);
471
472	pParent->pDownBase = NULL;
473	}
474	else
475	{
476	/* device parent */
477	PPDMLUN pLun = pCur->Internal.s.pLun;
478	pLun->pTop = NULL;
479	if (pLun->pDevIns->pDevReg->pfnDetach)
480	pLun->pDevIns->pDevReg->pfnDetach(pLun->pDevIns, pLun->iLun);
481	}
482
483	/*
484	* Call destructor.
485	*/
486	pCur->pUpBase = NULL;
487	if (pCur->pDrvReg->pfnDestruct)
488	pCur->pDrvReg->pfnDestruct(pCur);
489
490	/*
491	* Free all resources allocated by the driver.
492	*/
493	/* Queues. */
494	int rc = PDMR3QueueDestroyDriver(pCur->Internal.s.pVM, pCur);
495	AssertRC(rc);
496	/* Timers. */
497	rc = TMR3TimerDestroyDriver(pCur->Internal.s.pVM, pCur);
498	AssertRC(rc);
499	/* SSM data units */
500	rc = SSMR3DeregisterDriver(pCur->Internal.s.pVM, pCur, NULL, 0);
501	AssertRC(rc);
502	/* Finally, the driver it self. */
503	ASMMemFill32(pCur, RT_OFFSETOF(PDMDRVINS, achInstanceData[pCur->pDrvReg->cbInstance]), 0xdeadd0d0);
504	MMR3HeapFree(pCur);
505
506	} while (pCur != pDrvIns);
507
508	return VINF_SUCCESS;
509	}
510
511
512	/** @copydoc PDMDRVHLP::pfnAttach */
513	static DECLCALLBACK(int) pdmR3DrvHlp_Attach(PPDMDRVINS pDrvIns, PPDMIBASE *ppBaseInterface)
514	{
515	PDMDRV_ASSERT_DRVINS(pDrvIns);
516	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
517	LogFlow(("pdmR3DrvHlp_Attach: caller='%s'/%d:\n",
518	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance));
519
520	/*
521	* Check that there isn't anything attached already.
522	*/
523	int rc;
524	if (!pDrvIns->Internal.s.pDown)
525	{
526	/*
527	* Get the attached driver configuration.
528	*/
529	PCFGMNODE pNode = CFGMR3GetChild(pDrvIns->Internal.s.pCfgHandle, "AttachedDriver");
530	if (pNode)
531	{
532	char *pszName;
533	rc = CFGMR3QueryStringAlloc(pNode, "Driver", &pszName);
534	if (VBOX_SUCCESS(rc))
535	{
536	/*
537	* Find the driver and allocate instance data.
538	*/
539	PVM pVM = pDrvIns->Internal.s.pVM;
540	PPDMDRV pDrv = pdmR3DrvLookup(pVM, pszName);
541	if (pDrv)
542	{
543	/* config node */
544	PCFGMNODE pConfigNode = CFGMR3GetChild(pNode, "Config");
545	if (!pConfigNode)
546	rc = CFGMR3InsertNode(pNode, "Config", &pConfigNode);
547	if (VBOX_SUCCESS(rc))
548	{
549	CFGMR3SetRestrictedRoot(pConfigNode);
550
551	size_t cb = RT_OFFSETOF(PDMDRVINS, achInstanceData[pDrv->pDrvReg->cbInstance]);
552	cb = RT_ALIGN_Z(cb, 16);
553	PPDMDRVINS pNew = (PPDMDRVINS)MMR3HeapAllocZ(pVM, MM_TAG_PDM_DRIVER, cb);
554	if (pNew)
555	{
556	/*
557	* Initialize the instance structure (declaration order).
558	*/
559	pNew->u32Version = PDM_DRVINS_VERSION;
560	pNew->Internal.s.pUp = pDrvIns;
561	pNew->Internal.s.pDown = NULL;
562	pNew->Internal.s.pLun = pDrvIns->Internal.s.pLun;
563	pNew->Internal.s.pDrv = pDrv;
564	pNew->Internal.s.pVM = pVM;
565	pNew->Internal.s.fDetaching = false;
566	pNew->Internal.s.pCfgHandle = pNode;
567	pNew->pDrvHlp = &g_pdmR3DrvHlp;
568	pNew->pDrvReg = pDrv->pDrvReg;
569	pNew->pCfgHandle = pConfigNode;
570	pNew->iInstance = pDrv->cInstances++;
571	pNew->pUpBase = &pDrvIns->IBase; /* This ain't safe, you can calc the pDrvIns of the up/down driver! */
572	pNew->pDownBase = NULL;
573	pNew->IBase.pfnQueryInterface = NULL;
574	pNew->pvInstanceData = &pNew->achInstanceData[0];
575
576	/*
577	* Hook it onto the chain and call the constructor.
578	*/
579	pDrvIns->Internal.s.pDown = pNew;
580	Log(("PDM: Constructing driver '%s' instance %d...\n", pNew->pDrvReg->szDriverName, pNew->iInstance));
581	rc = pDrv->pDrvReg->pfnConstruct(pNew, pNew->pCfgHandle);
582	if (VBOX_SUCCESS(rc))
583	{
584	*ppBaseInterface = &pNew->IBase;
585	rc = VINF_SUCCESS;
586	}
587	else
588	{
589	/*
590	* Unlink and free the data.
591	*/
592	pDrvIns->Internal.s.pDown = NULL;
593	ASMMemFill32(pNew, cb, 0xdeadd0d0);
594	MMR3HeapFree(pNew);
595	pDrv->cInstances--;
596	}
597	}
598	else
599	{
600	AssertMsgFailed(("Failed to allocate %d bytes for instantiating driver '%s'\n", cb, pszName));
601	rc = VERR_NO_MEMORY;
602	}
603	}
604	else
605	AssertMsgFailed(("Failed to create Config node! rc=%Vrc\n", rc));
606	}
607	else
608	{
609	AssertMsgFailed(("Driver '%s' wasn't found!\n", pszName));
610	rc = VERR_PDM_DRIVER_NOT_FOUND;
611	}
612	MMR3HeapFree(pszName);
613	}
614	else
615	{
616	AssertMsgFailed(("Query for string value of \"Driver\" -> %Vrc\n", rc));
617	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
618	rc = VERR_PDM_CFG_MISSING_DRIVER_NAME;
619	}
620	}
621	else
622	rc = VERR_PDM_NO_ATTACHED_DRIVER;
623	}
624	else
625	{
626	AssertMsgFailed(("Already got a driver attached. The driver should keep track of such things!\n"));
627	rc = VERR_PDM_DRIVER_ALREADY_ATTACHED;
628	}
629
630	LogFlow(("pdmR3DrvHlp_Attach: caller='%s'/%d: return %Vrc\n",
631	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc));
632	return rc;
633	}
634
635
636	/** @copydoc PDMDRVHLP::pfnDetach */
637	static DECLCALLBACK(int) pdmR3DrvHlp_Detach(PPDMDRVINS pDrvIns)
638	{
639	PDMDRV_ASSERT_DRVINS(pDrvIns);
640	LogFlow(("pdmR3DrvHlp_Detach: caller='%s'/%d:\n",
641	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance));
642	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
643
644	/*
645	* Anything attached?
646	*/
647	int rc;
648	if (pDrvIns->Internal.s.pDown)
649	{
650	rc = pdmR3DrvDetach(pDrvIns->Internal.s.pDown);
651	}
652	else
653	{
654	AssertMsgFailed(("Nothing attached!\n"));
655	rc = VERR_PDM_NO_DRIVER_ATTACHED;
656	}
657
658	LogFlow(("pdmR3DrvHlp_Detach: caller='%s'/%d: returns %Vrc\n",
659	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc));
660	return rc;
661	}
662
663
664	/** @copydoc PDMDRVHLP::pfnDetachSelf */
665	static DECLCALLBACK(int) pdmR3DrvHlp_DetachSelf(PPDMDRVINS pDrvIns)
666	{
667	PDMDRV_ASSERT_DRVINS(pDrvIns);
668	LogFlow(("pdmR3DrvHlp_DetachSelf: caller='%s'/%d:\n",
669	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance));
670	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
671
672	int rc = pdmR3DrvDetach(pDrvIns);
673
674	LogFlow(("pdmR3DrvHlp_Detach: returns %Vrc\n", rc)); /* pDrvIns is freed by now. */
675	return rc;
676	}
677
678
679	/** @copydoc PDMDRVHLP::pfnMountPrepare */
680	static DECLCALLBACK(int) pdmR3DrvHlp_MountPrepare(PPDMDRVINS pDrvIns, const char pszFilename, const char pszCoreDriver)
681	{
682	PDMDRV_ASSERT_DRVINS(pDrvIns);
683	LogFlow(("pdmR3DrvHlp_MountPrepare: caller='%s'/%d: pszFilename=%p:{%s} pszCoreDriver=%p:{%s}\n",
684	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, pszFilename, pszFilename, pszCoreDriver, pszCoreDriver));
685	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
686
687	/*
688	* Do the caller have anything attached below itself?
689	*/
690	if (pDrvIns->Internal.s.pDown)
691	{
692	AssertMsgFailed(("Cannot prepare a mount when something's attached to you!\n"));
693	return VERR_PDM_DRIVER_ALREADY_ATTACHED;
694	}
695
696	/*
697	* We're asked to prepare, so we'll start off by nuking the
698	* attached configuration tree.
699	*/
700	PCFGMNODE pNode = CFGMR3GetChild(pDrvIns->Internal.s.pCfgHandle, "AttachedDriver");
701	if (pNode)
702	CFGMR3RemoveNode(pNode);
703
704	/*
705	* If there is no core driver, we'll have to probe for it.
706	*/
707	if (!pszCoreDriver)
708	{
709	/** @todo implement image probing. */
710	AssertReleaseMsgFailed(("Not implemented!\n"));
711	return VERR_NOT_IMPLEMENTED;
712	}
713
714	/*
715	* Construct the basic attached driver configuration.
716	*/
717	int rc = CFGMR3InsertNode(pDrvIns->Internal.s.pCfgHandle, "AttachedDriver", &pNode);
718	if (VBOX_SUCCESS(rc))
719	{
720	rc = CFGMR3InsertString(pNode, "Driver", pszCoreDriver);
721	if (VBOX_SUCCESS(rc))
722	{
723	PCFGMNODE pCfg;
724	rc = CFGMR3InsertNode(pNode, "Config", &pCfg);
725	if (VBOX_SUCCESS(rc))
726	{
727	rc = CFGMR3InsertString(pCfg, "Path", pszFilename);
728	if (VBOX_SUCCESS(rc))
729	{
730	LogFlow(("pdmR3DrvHlp_MountPrepare: caller='%s'/%d: returns %Vrc (Driver=%s)\n",
731	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc, pszCoreDriver));
732	return rc;
733	}
734	else
735	AssertMsgFailed(("Path string insert failed, rc=%Vrc\n", rc));
736	}
737	else
738	AssertMsgFailed(("Config node failed, rc=%Vrc\n", rc));
739	}
740	else
741	AssertMsgFailed(("Driver string insert failed, rc=%Vrc\n", rc));
742	CFGMR3RemoveNode(pNode);
743	}
744	else
745	AssertMsgFailed(("AttachedDriver node insert failed, rc=%Vrc\n", rc));
746
747	LogFlow(("pdmR3DrvHlp_MountPrepare: caller='%s'/%d: returns %Vrc\n",
748	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc));
749	return rc;
750	}
751
752
753	/** @copydoc PDMDRVHLP::pfnAssertEMT */
754	static DECLCALLBACK(bool) pdmR3DrvHlp_AssertEMT(PPDMDRVINS pDrvIns, const char pszFile, unsigned iLine, const char pszFunction)
755	{
756	PDMDRV_ASSERT_DRVINS(pDrvIns);
757	if (VM_IS_EMT(pDrvIns->Internal.s.pVM))
758	return true;
759
760	char szMsg[100];
761	RTStrPrintf(szMsg, sizeof(szMsg), "AssertEMT '%s'/%d\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance);
762	AssertMsg1(szMsg, iLine, pszFile, pszFunction);
763	AssertBreakpoint();
764	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
765	return false;
766	}
767
768
769	/** @copydoc PDMDRVHLP::pfnAssertOther */
770	static DECLCALLBACK(bool) pdmR3DrvHlp_AssertOther(PPDMDRVINS pDrvIns, const char pszFile, unsigned iLine, const char pszFunction)
771	{
772	PDMDRV_ASSERT_DRVINS(pDrvIns);
773	if (!VM_IS_EMT(pDrvIns->Internal.s.pVM))
774	return true;
775
776	char szMsg[100];
777	RTStrPrintf(szMsg, sizeof(szMsg), "AssertOther '%s'/%d\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance);
778	AssertMsg1(szMsg, iLine, pszFile, pszFunction);
779	AssertBreakpoint();
780	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
781	return false;
782	}
783
784
785	/** @copydoc PDMDRVHLP::pfnVMSetError */
786	static DECLCALLBACK(int) pdmR3DrvHlp_VMSetError(PPDMDRVINS pDrvIns, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
787	{
788	PDMDRV_ASSERT_DRVINS(pDrvIns);
789	va_list args;
790	va_start(args, pszFormat);
791	int rc2 = VMSetErrorV(pDrvIns->Internal.s.pVM, rc, RT_SRC_POS_ARGS, pszFormat, args); Assert(rc2 == rc); NOREF(rc2);
792	va_end(args);
793	return rc;
794	}
795
796
797	/** @copydoc PDMDRVHLP::pfnVMSetErrorV */
798	static DECLCALLBACK(int) pdmR3DrvHlp_VMSetErrorV(PPDMDRVINS pDrvIns, int rc, RT_SRC_POS_DECL, const char *pszFormat, va_list va)
799	{
800	PDMDRV_ASSERT_DRVINS(pDrvIns);
801	int rc2 = VMSetErrorV(pDrvIns->Internal.s.pVM, rc, RT_SRC_POS_ARGS, pszFormat, va); Assert(rc2 == rc); NOREF(rc2);
802	return rc;
803	}
804
805
806	/** @copydoc PDMDRVHLP::pfnPDMQueueCreate */
807	static DECLCALLBACK(int) pdmR3DrvHlp_PDMQueueCreate(PPDMDRVINS pDrvIns, RTUINT cbItem, RTUINT cItems, uint32_t cMilliesInterval, PFNPDMQUEUEDRV pfnCallback, PPDMQUEUE *ppQueue)
808	{
809	PDMDRV_ASSERT_DRVINS(pDrvIns);
810	LogFlow(("pdmR3DrvHlp_PDMQueueCreate: caller='%s'/%d: cbItem=%d cItems=%d cMilliesInterval=%d pfnCallback=%p ppQueue=%p\n",
811	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, cbItem, cItems, cMilliesInterval, pfnCallback, ppQueue, ppQueue));
812	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
813
814	int rc = PDMR3QueueCreateDriver(pDrvIns->Internal.s.pVM, pDrvIns, cbItem, cItems, cMilliesInterval, pfnCallback, ppQueue);
815
816	LogFlow(("pdmR3DrvHlp_PDMQueueCreate: caller='%s'/%d: returns %Vrc ppQueue=%p\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc, ppQueue));
817	return rc;
818	}
819
820
821
822	/** @copydoc PDMDRVHLP::pfnPDMPollerRegister */
823	static DECLCALLBACK(int) pdmR3DrvHlp_PDMPollerRegister(PPDMDRVINS pDrvIns, PFNPDMDRVPOLLER pfnPoller)
824	{
825	PDMDRV_ASSERT_DRVINS(pDrvIns);
826	LogFlow(("pdmR3DrvHlp_PDMPollerRegister: caller='%s'/%d: pfnPoller=%p\n",
827	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, pfnPoller));
828	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
829
830	int rc = VINF_SUCCESS;
831	PVM pVM = pDrvIns->Internal.s.pVM;
832	if (pVM->pdm.s.cPollers < ELEMENTS(pVM->pdm.s.apfnPollers))
833	{
834	pVM->pdm.s.apfnPollers[pVM->pdm.s.cPollers] = pfnPoller;
835	pVM->pdm.s.aDrvInsPollers[pVM->pdm.s.cPollers] = pDrvIns;
836	pVM->pdm.s.cPollers++;
837	if (pVM->pdm.s.cPollers == 1)
838	TMTimerSetMillies(pVM->pdm.s.pTimerPollers, 5);
839	}
840	else
841	{
842	AssertMsgFailed(("Too many pollers!\n"));
843	rc = VERR_INTERNAL_ERROR;
844	}
845
846	LogFlow(("pdmR3DrvHlp_PDMPollerRegister: caller='%s'/%d: returns %Vrc\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc));
847	return rc;
848	}
849
850
851	/** @copydoc PDMDRVHLP::pfnTMGetVirtualFreq */
852	static DECLCALLBACK(uint64_t) pdmR3DrvHlp_TMGetVirtualFreq(PPDMDRVINS pDrvIns)
853	{
854	PDMDRV_ASSERT_DRVINS(pDrvIns);
855
856	return TMVirtualGetFreq(pDrvIns->Internal.s.pVM);
857	}
858
859
860	/** @copydoc PDMDRVHLP::pfnTMGetVirtualTime */
861	static DECLCALLBACK(uint64_t) pdmR3DrvHlp_TMGetVirtualTime(PPDMDRVINS pDrvIns)
862	{
863	PDMDRV_ASSERT_DRVINS(pDrvIns);
864
865	return TMVirtualGet(pDrvIns->Internal.s.pVM);
866	}
867
868	/** @copydoc PDMDRVHLP::pfnTMTimerCreate */
869	static DECLCALLBACK(int) pdmR3DrvHlp_TMTimerCreate(PPDMDRVINS pDrvIns, TMCLOCK enmClock, PFNTMTIMERDRV pfnCallback, const char *pszDesc, PPTMTIMERHC ppTimer)
870	{
871	PDMDRV_ASSERT_DRVINS(pDrvIns);
872	LogFlow(("pdmR3DrvHlp_TMTimerCreate: caller='%s'/%d: enmClock=%d pfnCallback=%p pszDesc=%p:{%s} ppTimer=%p\n",
873	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, enmClock, pfnCallback, pszDesc, pszDesc, ppTimer));
874
875	int rc = TMR3TimerCreateDriver(pDrvIns->Internal.s.pVM, pDrvIns, enmClock, pfnCallback, pszDesc, ppTimer);
876
877	LogFlow(("pdmR3DrvHlp_TMTimerCreate: caller='%s'/%d: returns %Vrc ppTimer=%p\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc, ppTimer));
878	return rc;
879	}
880
881
882
883	/** @copydoc PDMDRVHLP::pfnSSMRegister */
884	static DECLCALLBACK(int) pdmR3DrvHlp_SSMRegister(PPDMDRVINS pDrvIns, const char *pszName, uint32_t u32Instance, uint32_t u32Version, size_t cbGuess,
885	PFNSSMDRVSAVEPREP pfnSavePrep, PFNSSMDRVSAVEEXEC pfnSaveExec, PFNSSMDRVSAVEDONE pfnSaveDone,
886	PFNSSMDRVLOADPREP pfnLoadPrep, PFNSSMDRVLOADEXEC pfnLoadExec, PFNSSMDRVLOADDONE pfnLoadDone)
887	{
888	PDMDRV_ASSERT_DRVINS(pDrvIns);
889	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
890	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",
891	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, pszName, pszName, u32Instance, u32Version, cbGuess, pfnSavePrep, pfnSaveExec, pfnSaveDone, pfnLoadPrep, pfnLoadExec, pfnLoadDone));
892
893	int rc = SSMR3RegisterDriver(pDrvIns->Internal.s.pVM, pDrvIns, pszName, u32Instance, u32Version, cbGuess,
894	pfnSavePrep, pfnSaveExec, pfnSaveDone,
895	pfnLoadPrep, pfnLoadExec, pfnLoadDone);
896
897	LogFlow(("pdmR3DrvHlp_SSMRegister: caller='%s'/%d: returns %Vrc\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc));
898	return rc;
899	}
900
901
902	/** @copydoc PDMDRVHLP::pfnSSMDeregister */
903	static DECLCALLBACK(int) pdmR3DrvHlp_SSMDeregister(PPDMDRVINS pDrvIns, const char *pszName, uint32_t u32Instance)
904	{
905	PDMDRV_ASSERT_DRVINS(pDrvIns);
906	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
907	LogFlow(("pdmR3DrvHlp_SSMDeregister: caller='%s'/%d: pszName=%p:{%s} u32Instance=%#x\n",
908	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, pszName, pszName, u32Instance));
909
910	int rc = SSMR3DeregisterDriver(pDrvIns->Internal.s.pVM, pDrvIns, pszName, u32Instance);
911
912	LogFlow(("pdmR3DrvHlp_SSMDeregister: caller='%s'/%d: returns %Vrc\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc));
913	return rc;
914	}
915
916
917	/** @copydoc PDMDRVHLP::pfnSTAMRegister */
918	static DECLCALLBACK(void) pdmR3DrvHlp_STAMRegister(PPDMDRVINS pDrvIns, void pvSample, STAMTYPE enmType, const char pszName, STAMUNIT enmUnit, const char *pszDesc)
919	{
920	PDMDRV_ASSERT_DRVINS(pDrvIns);
921	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
922
923	STAM_REG(pDrvIns->Internal.s.pVM, pvSample, enmType, pszName, enmUnit, pszDesc);
924	/** @todo track the samples so they can be dumped & deregistered when the driver instance is destroyed.
925	* For now we just have to be careful not to use this call for drivers which can be unloaded. */
926	}
927
928
929	/** @copydoc PDMDRVHLP::pfnSTAMRegisterF */
930	static DECLCALLBACK(void) pdmR3DrvHlp_STAMRegisterF(PPDMDRVINS pDrvIns, void *pvSample, STAMTYPE enmType, STAMVISIBILITY enmVisibility,
931	STAMUNIT enmUnit, const char pszDesc, const char pszName, ...)
932	{
933	PDMDRV_ASSERT_DRVINS(pDrvIns);
934	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
935
936	va_list args;
937	va_start(args, pszName);
938	int rc = STAMR3RegisterV(pDrvIns->Internal.s.pVM, pvSample, enmType, enmVisibility, enmUnit, pszDesc, pszName, args);
939	va_end(args);
940	AssertRC(rc);
941	}
942
943
944	/** @copydoc PDMDRVHLP::pfnSTAMRegisterV */
945	static DECLCALLBACK(void) pdmR3DrvHlp_STAMRegisterV(PPDMDRVINS pDrvIns, void *pvSample, STAMTYPE enmType, STAMVISIBILITY enmVisibility,
946	STAMUNIT enmUnit, const char pszDesc, const char pszName, va_list args)
947	{
948	PDMDRV_ASSERT_DRVINS(pDrvIns);
949	VM_ASSERT_EMT(pDrvIns->Internal.s.pVM);
950
951	int rc = STAMR3RegisterV(pDrvIns->Internal.s.pVM, pvSample, enmType, enmVisibility, enmUnit, pszDesc, pszName, args);
952	AssertRC(rc);
953	}
954
955
956	/** @copydoc PDMDRVHLP::pfnSUPCallVMMR0Ex */
957	static DECLCALLBACK(int) pdmR3DrvHlp_SUPCallVMMR0Ex(PPDMDRVINS pDrvIns, unsigned uOperation, void *pvArg, unsigned cbArg)
958	{
959	PDMDRV_ASSERT_DRVINS(pDrvIns);
960	LogFlow(("pdmR3DrvHlp_SSMCallVMMR0Ex: caller='%s'/%d: uOperation=%u pvArg=%p cbArg=%d\n",
961	pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, uOperation, pvArg, cbArg));
962	int rc;
963	if ( uOperation >= VMMR0_DO_SRV_START
964	&& uOperation < VMMR0_DO_SRV_END)
965	rc = SUPCallVMMR0Ex(pDrvIns->Internal.s.pVM, uOperation, pvArg, cbArg);
966	else
967	{
968	AssertMsgFailed(("Invalid uOperation=%u\n", uOperation));
969	rc = VERR_INVALID_PARAMETER;
970	}
971
972	LogFlow(("pdmR3DrvHlp_SSMDeregister: caller='%s'/%d: returns %Vrc\n", pDrvIns->pDrvReg->szDriverName, pDrvIns->iInstance, rc));
973	return rc;
974	}
975

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source: vbox/trunk/src/VBox/VMM/PDMDriver.cpp@ 1

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