PDMDevice.cpp@ 62659

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1	/* $Id: PDMDevice.cpp 62643 2016-07-28 21:25:37Z vboxsync $ */
2	/** @file
3	* PDM - Pluggable Device and Driver Manager, Device parts.
4	*/
5
6	/*
7	* Copyright (C) 2006-2016 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_PDM_DEVICE
23	#include "PDMInternal.h"
24	#include <VBox/vmm/pdm.h>
25	#include <VBox/vmm/mm.h>
26	#include <VBox/vmm/pgm.h>
27	#include <VBox/vmm/iom.h>
28	#include <VBox/vmm/hm.h>
29	#include <VBox/vmm/cfgm.h>
30	#ifdef VBOX_WITH_NEW_APIC
31	# include <VBox/vmm/apic.h>
32	#endif
33	#ifdef VBOX_WITH_REM
34	# include <VBox/vmm/rem.h>
35	#endif
36	#include <VBox/vmm/dbgf.h>
37	#include <VBox/vmm/vm.h>
38	#include <VBox/vmm/uvm.h>
39	#include <VBox/vmm/vmm.h>
40
41	#include <VBox/version.h>
42	#include <VBox/log.h>
43	#include <VBox/err.h>
44	#include <iprt/alloc.h>
45	#include <iprt/alloca.h>
46	#include <iprt/asm.h>
47	#include <iprt/assert.h>
48	#include <iprt/path.h>
49	#include <iprt/semaphore.h>
50	#include <iprt/string.h>
51	#include <iprt/thread.h>
52
53
54	/*********************************************************************************************************************************
55	* Structures and Typedefs *
56	*********************************************************************************************************************************/
57	/**
58	* Internal callback structure pointer.
59	* The main purpose is to define the extra data we associate
60	* with PDMDEVREGCB so we can find the VM instance and so on.
61	*/
62	typedef struct PDMDEVREGCBINT
63	{
64	/** The callback structure. */
65	PDMDEVREGCB Core;
66	/** A bit of padding. */
67	uint32_t u32[4];
68	/** VM Handle. */
69	PVM pVM;
70	/** Pointer to the configuration node the registrations should be
71	* associated with. Can be NULL. */
72	PCFGMNODE pCfgNode;
73	} PDMDEVREGCBINT;
74	/** Pointer to a PDMDEVREGCBINT structure. */
75	typedef PDMDEVREGCBINT *PPDMDEVREGCBINT;
76	/** Pointer to a const PDMDEVREGCBINT structure. */
77	typedef const PDMDEVREGCBINT *PCPDMDEVREGCBINT;
78
79
80	/*********************************************************************************************************************************
81	* Internal Functions *
82	*********************************************************************************************************************************/
83	static DECLCALLBACK(int) pdmR3DevReg_Register(PPDMDEVREGCB pCallbacks, PCPDMDEVREG pReg);
84	static int pdmR3DevLoadModules(PVM pVM);
85	static int pdmR3DevLoad(PVM pVM, PPDMDEVREGCBINT pRegCB, const char pszFilename, const char pszName);
86
87
88
89
90	/**
91	* This function will initialize the devices for this VM instance.
92	*
93	*
94	* First of all this mean loading the builtin device and letting them
95	* register themselves. Beyond that any additional device modules are
96	* loaded and called for registration.
97	*
98	* Then the device configuration is enumerated, the instantiation order
99	* is determined, and finally they are instantiated.
100	*
101	* After all devices have been successfully instantiated the primary
102	* PCI Bus device is called to emulate the PCI BIOS, i.e. making the
103	* resource assignments. If there is no PCI device, this step is of course
104	* skipped.
105	*
106	* Finally the init completion routines of the instantiated devices
107	* are called.
108	*
109	* @returns VBox status code.
110	* @param pVM The cross context VM structure.
111	*/
112	int pdmR3DevInit(PVM pVM)
113	{
114	LogFlow(("pdmR3DevInit:\n"));
115
116	AssertRelease(!(RT_OFFSETOF(PDMDEVINS, achInstanceData) & 15));
117	AssertRelease(sizeof(pVM->pdm.s.pDevInstances->Internal.s) <= sizeof(pVM->pdm.s.pDevInstances->Internal.padding));
118
119	/*
120	* Load device modules.
121	*/
122	int rc = pdmR3DevLoadModules(pVM);
123	if (RT_FAILURE(rc))
124	return rc;
125
126	#ifdef VBOX_WITH_USB
127	/* ditto for USB Devices. */
128	rc = pdmR3UsbLoadModules(pVM);
129	if (RT_FAILURE(rc))
130	return rc;
131	#endif
132
133	/*
134	* Get the RC & R0 devhlps and create the devhlp R3 task queue.
135	*/
136	PCPDMDEVHLPRC pHlpRC = NIL_RTRCPTR;
137	if (!HMIsEnabled(pVM))
138	{
139	rc = PDMR3LdrGetSymbolRC(pVM, NULL, "g_pdmRCDevHlp", &pHlpRC);
140	AssertReleaseRCReturn(rc, rc);
141	}
142
143	PCPDMDEVHLPR0 pHlpR0;
144	rc = PDMR3LdrGetSymbolR0(pVM, NULL, "g_pdmR0DevHlp", &pHlpR0);
145	AssertReleaseRCReturn(rc, rc);
146
147	rc = PDMR3QueueCreateInternal(pVM, sizeof(PDMDEVHLPTASK), 8, 0, pdmR3DevHlpQueueConsumer, true, "DevHlp",
148	&pVM->pdm.s.pDevHlpQueueR3);
149	AssertRCReturn(rc, rc);
150	pVM->pdm.s.pDevHlpQueueR0 = PDMQueueR0Ptr(pVM->pdm.s.pDevHlpQueueR3);
151	pVM->pdm.s.pDevHlpQueueRC = PDMQueueRCPtr(pVM->pdm.s.pDevHlpQueueR3);
152
153
154	/*
155	*
156	* Enumerate the device instance configurations
157	* and come up with a instantiation order.
158	*
159	*/
160	/* Switch to /Devices, which contains the device instantiations. */
161	PCFGMNODE pDevicesNode = CFGMR3GetChild(CFGMR3GetRoot(pVM), "Devices");
162
163	/*
164	* Count the device instances.
165	*/
166	PCFGMNODE pCur;
167	PCFGMNODE pInstanceNode;
168	unsigned cDevs = 0;
169	for (pCur = CFGMR3GetFirstChild(pDevicesNode); pCur; pCur = CFGMR3GetNextChild(pCur))
170	for (pInstanceNode = CFGMR3GetFirstChild(pCur); pInstanceNode; pInstanceNode = CFGMR3GetNextChild(pInstanceNode))
171	cDevs++;
172	if (!cDevs)
173	{
174	Log(("PDM: No devices were configured!\n"));
175	return VINF_SUCCESS;
176	}
177	Log2(("PDM: cDevs=%u\n", cDevs));
178
179	/*
180	* Collect info on each device instance.
181	*/
182	struct DEVORDER
183	{
184	/** Configuration node. */
185	PCFGMNODE pNode;
186	/** Pointer to device. */
187	PPDMDEV pDev;
188	/** Init order. */
189	uint32_t u32Order;
190	/** VBox instance number. */
191	uint32_t iInstance;
192	} paDevs = (struct DEVORDER )alloca(sizeof(paDevs[0]) * (cDevs + 1)); /* (One extra for swapping) */
193	Assert(paDevs);
194	unsigned i = 0;
195	for (pCur = CFGMR3GetFirstChild(pDevicesNode); pCur; pCur = CFGMR3GetNextChild(pCur))
196	{
197	/* Get the device name. */
198	char szName[sizeof(paDevs[0].pDev->pReg->szName)];
199	rc = CFGMR3GetName(pCur, szName, sizeof(szName));
200	AssertMsgRCReturn(rc, ("Configuration error: device name is too long (or something)! rc=%Rrc\n", rc), rc);
201
202	/* Find the device. */
203	PPDMDEV pDev = pdmR3DevLookup(pVM, szName);
204	AssertLogRelMsgReturn(pDev, ("Configuration error: device '%s' not found!\n", szName), VERR_PDM_DEVICE_NOT_FOUND);
205
206	/* Configured priority or use default based on device class? */
207	uint32_t u32Order;
208	rc = CFGMR3QueryU32(pCur, "Priority", &u32Order);
209	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
210	{
211	uint32_t u32 = pDev->pReg->fClass;
212	for (u32Order = 1; !(u32 & u32Order); u32Order <<= 1)
213	/* nop */;
214	}
215	else
216	AssertMsgRCReturn(rc, ("Configuration error: reading \"Priority\" for the '%s' device failed rc=%Rrc!\n", szName, rc), rc);
217
218	/* Enumerate the device instances. */
219	uint32_t const iStart = i;
220	for (pInstanceNode = CFGMR3GetFirstChild(pCur); pInstanceNode; pInstanceNode = CFGMR3GetNextChild(pInstanceNode))
221	{
222	paDevs[i].pNode = pInstanceNode;
223	paDevs[i].pDev = pDev;
224	paDevs[i].u32Order = u32Order;
225
226	/* Get the instance number. */
227	char szInstance[32];
228	rc = CFGMR3GetName(pInstanceNode, szInstance, sizeof(szInstance));
229	AssertMsgRCReturn(rc, ("Configuration error: instance name is too long (or something)! rc=%Rrc\n", rc), rc);
230	char *pszNext = NULL;
231	rc = RTStrToUInt32Ex(szInstance, &pszNext, 0, &paDevs[i].iInstance);
232	AssertMsgRCReturn(rc, ("Configuration error: RTStrToInt32Ex failed on the instance name '%s'! rc=%Rrc\n", szInstance, rc), rc);
233	AssertMsgReturn(!*pszNext, ("Configuration error: the instance name '%s' isn't all digits. (%s)\n", szInstance, pszNext), VERR_INVALID_PARAMETER);
234
235	/* next instance */
236	i++;
237	}
238
239	/* check the number of instances */
240	if (i - iStart > pDev->pReg->cMaxInstances)
241	AssertLogRelMsgFailedReturn(("Configuration error: Too many instances of %s was configured: %u, max %u\n",
242	szName, i - iStart, pDev->pReg->cMaxInstances),
243	VERR_PDM_TOO_MANY_DEVICE_INSTANCES);
244	} /* devices */
245	Assert(i == cDevs);
246
247	/*
248	* Sort the device array ascending on u32Order. (bubble)
249	*/
250	unsigned c = cDevs - 1;
251	while (c)
252	{
253	unsigned j = 0;
254	for (i = 0; i < c; i++)
255	if (paDevs[i].u32Order > paDevs[i + 1].u32Order)
256	{
257	paDevs[cDevs] = paDevs[i + 1];
258	paDevs[i + 1] = paDevs[i];
259	paDevs[i] = paDevs[cDevs];
260	j = i;
261	}
262	c = j;
263	}
264
265
266	/*
267	*
268	* Instantiate the devices.
269	*
270	*/
271	for (i = 0; i < cDevs; i++)
272	{
273	/*
274	* Gather a bit of config.
275	*/
276	/* trusted */
277	bool fTrusted;
278	rc = CFGMR3QueryBool(paDevs[i].pNode, "Trusted", &fTrusted);
279	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
280	fTrusted = false;
281	else if (RT_FAILURE(rc))
282	{
283	AssertMsgFailed(("configuration error: failed to query boolean \"Trusted\", rc=%Rrc\n", rc));
284	return rc;
285	}
286	/* config node */
287	PCFGMNODE pConfigNode = CFGMR3GetChild(paDevs[i].pNode, "Config");
288	if (!pConfigNode)
289	{
290	rc = CFGMR3InsertNode(paDevs[i].pNode, "Config", &pConfigNode);
291	if (RT_FAILURE(rc))
292	{
293	AssertMsgFailed(("Failed to create Config node! rc=%Rrc\n", rc));
294	return rc;
295	}
296	}
297	CFGMR3SetRestrictedRoot(pConfigNode);
298
299	/*
300	* Allocate the device instance and critical section.
301	*/
302	AssertReturn(paDevs[i].pDev->cInstances < paDevs[i].pDev->pReg->cMaxInstances, VERR_PDM_TOO_MANY_DEVICE_INSTANCES);
303	size_t cb = RT_OFFSETOF(PDMDEVINS, achInstanceData[paDevs[i].pDev->pReg->cbInstance]);
304	cb = RT_ALIGN_Z(cb, 16);
305	PPDMDEVINS pDevIns;
306	if (paDevs[i].pDev->pReg->fFlags & (PDM_DEVREG_FLAGS_RC \| PDM_DEVREG_FLAGS_R0))
307	rc = MMR3HyperAllocOnceNoRel(pVM, cb, 0, MM_TAG_PDM_DEVICE, (void **)&pDevIns);
308	else
309	rc = MMR3HeapAllocZEx(pVM, MM_TAG_PDM_DEVICE, cb, (void **)&pDevIns);
310	AssertLogRelMsgRCReturn(rc,
311	("Failed to allocate %d bytes of instance data for device '%s'. rc=%Rrc\n",
312	cb, paDevs[i].pDev->pReg->szName, rc),
313	rc);
314	PPDMCRITSECT pCritSect;
315	if (paDevs[i].pDev->pReg->fFlags & (PDM_DEVREG_FLAGS_RC \| PDM_DEVREG_FLAGS_R0))
316	rc = MMHyperAlloc(pVM, sizeof(pCritSect), 0, MM_TAG_PDM_DEVICE, (void *)&pCritSect);
317	else
318	rc = MMR3HeapAllocZEx(pVM, MM_TAG_PDM_DEVICE, sizeof(pCritSect), (void *)&pCritSect);
319	AssertLogRelMsgRCReturn(rc, ("Failed to allocate a critical section for the device (%Rrc)\n", rc), rc);
320
321	/*
322	* Initialize it.
323	*/
324	pDevIns->u32Version = PDM_DEVINS_VERSION;
325	pDevIns->iInstance = paDevs[i].iInstance;
326	//pDevIns->Internal.s.pNextR3 = NULL;
327	//pDevIns->Internal.s.pPerDeviceNextR3 = NULL;
328	pDevIns->Internal.s.pDevR3 = paDevs[i].pDev;
329	pDevIns->Internal.s.pVMR3 = pVM;
330	pDevIns->Internal.s.pVMR0 = pVM->pVMR0;
331	pDevIns->Internal.s.pVMRC = pVM->pVMRC;
332	//pDevIns->Internal.s.pLunsR3 = NULL;
333	pDevIns->Internal.s.pCfgHandle = paDevs[i].pNode;
334	//pDevIns->Internal.s.pPciDeviceR3 = NULL;
335	//pDevIns->Internal.s.pPciBusR3 = NULL;
336	//pDevIns->Internal.s.pPciDeviceR0 = 0;
337	//pDevIns->Internal.s.pPciBusR0 = 0;
338	//pDevIns->Internal.s.pPciDeviceRC = 0;
339	//pDevIns->Internal.s.pPciBusRC = 0;
340	pDevIns->Internal.s.fIntFlags = PDMDEVINSINT_FLAGS_SUSPENDED;
341	//pDevIns->Internal.s.uLastIrqTag = 0;
342	pDevIns->pHlpR3 = fTrusted ? &g_pdmR3DevHlpTrusted : &g_pdmR3DevHlpUnTrusted;
343	pDevIns->pHlpRC = pHlpRC;
344	pDevIns->pHlpR0 = pHlpR0;
345	pDevIns->pReg = paDevs[i].pDev->pReg;
346	pDevIns->pCfg = pConfigNode;
347	//pDevIns->IBase.pfnQueryInterface = NULL;
348	//pDevIns->fTracing = 0;
349	pDevIns->idTracing = ++pVM->pdm.s.idTracingDev;
350	pDevIns->pvInstanceDataR3 = &pDevIns->achInstanceData[0];
351	pDevIns->pvInstanceDataRC = pDevIns->pReg->fFlags & PDM_DEVREG_FLAGS_RC
352	? MMHyperR3ToRC(pVM, pDevIns->pvInstanceDataR3) : NIL_RTRCPTR;
353	pDevIns->pvInstanceDataR0 = pDevIns->pReg->fFlags & PDM_DEVREG_FLAGS_R0
354	? MMHyperR3ToR0(pVM, pDevIns->pvInstanceDataR3) : NIL_RTR0PTR;
355
356	pDevIns->pCritSectRoR3 = pCritSect;
357	pDevIns->pCritSectRoRC = pDevIns->pReg->fFlags & PDM_DEVREG_FLAGS_RC
358	? MMHyperR3ToRC(pVM, pCritSect) : NIL_RTRCPTR;
359	pDevIns->pCritSectRoR0 = pDevIns->pReg->fFlags & PDM_DEVREG_FLAGS_R0
360	? MMHyperR3ToR0(pVM, pCritSect) : NIL_RTR0PTR;
361
362	rc = pdmR3CritSectInitDeviceAuto(pVM, pDevIns, pCritSect, RT_SRC_POS,
363	"%s#%uAuto", pDevIns->pReg->szName, pDevIns->iInstance);
364	AssertLogRelRCReturn(rc, rc);
365
366	/*
367	* Link it into all the lists.
368	*/
369	/* The global instance FIFO. */
370	PPDMDEVINS pPrev1 = pVM->pdm.s.pDevInstances;
371	if (!pPrev1)
372	pVM->pdm.s.pDevInstances = pDevIns;
373	else
374	{
375	while (pPrev1->Internal.s.pNextR3)
376	pPrev1 = pPrev1->Internal.s.pNextR3;
377	pPrev1->Internal.s.pNextR3 = pDevIns;
378	}
379
380	/* The per device instance FIFO. */
381	PPDMDEVINS pPrev2 = paDevs[i].pDev->pInstances;
382	if (!pPrev2)
383	paDevs[i].pDev->pInstances = pDevIns;
384	else
385	{
386	while (pPrev2->Internal.s.pPerDeviceNextR3)
387	pPrev2 = pPrev2->Internal.s.pPerDeviceNextR3;
388	pPrev2->Internal.s.pPerDeviceNextR3 = pDevIns;
389	}
390
391	/*
392	* Call the constructor.
393	*/
394	paDevs[i].pDev->cInstances++;
395	Log(("PDM: Constructing device '%s' instance %d...\n", pDevIns->pReg->szName, pDevIns->iInstance));
396	rc = pDevIns->pReg->pfnConstruct(pDevIns, pDevIns->iInstance, pDevIns->pCfg);
397	if (RT_FAILURE(rc))
398	{
399	LogRel(("PDM: Failed to construct '%s'/%d! %Rra\n", pDevIns->pReg->szName, pDevIns->iInstance, rc));
400	paDevs[i].pDev->cInstances--;
401	/* Because we're damn lazy, the destructor will be called even if
402	the constructor fails. So, no unlinking. */
403	return rc == VERR_VERSION_MISMATCH ? VERR_PDM_DEVICE_VERSION_MISMATCH : rc;
404	}
405	} /* for device instances */
406
407	#ifdef VBOX_WITH_USB
408	/* ditto for USB Devices. */
409	rc = pdmR3UsbInstantiateDevices(pVM);
410	if (RT_FAILURE(rc))
411	return rc;
412	#endif
413
414	LogFlow(("pdmR3DevInit: returns %Rrc\n", VINF_SUCCESS));
415	return VINF_SUCCESS;
416	}
417
418
419	/**
420	* Performs the init complete callback after ring-0 and raw-mode has been
421	* initialized.
422	*
423	* @returns VBox status code.
424	* @param pVM The cross context VM structure.
425	*/
426	int pdmR3DevInitComplete(PVM pVM)
427	{
428	int rc;
429
430	/*
431	*
432	* PCI BIOS Fake and Init Complete.
433	*
434	*/
435	if (pVM->pdm.s.aPciBuses[0].pDevInsR3)
436	{
437	pdmLock(pVM);
438	rc = pVM->pdm.s.aPciBuses[0].pfnFakePCIBIOSR3(pVM->pdm.s.aPciBuses[0].pDevInsR3);
439	pdmUnlock(pVM);
440	if (RT_FAILURE(rc))
441	{
442	AssertMsgFailed(("PCI BIOS fake failed rc=%Rrc\n", rc));
443	return rc;
444	}
445	}
446
447	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
448	{
449	if (pDevIns->pReg->pfnInitComplete)
450	{
451	PDMCritSectEnter(pDevIns->pCritSectRoR3, VERR_IGNORED);
452	rc = pDevIns->pReg->pfnInitComplete(pDevIns);
453	PDMCritSectLeave(pDevIns->pCritSectRoR3);
454	if (RT_FAILURE(rc))
455	{
456	AssertMsgFailed(("InitComplete on device '%s'/%d failed with rc=%Rrc\n",
457	pDevIns->pReg->szName, pDevIns->iInstance, rc));
458	return rc;
459	}
460	}
461	}
462
463	#ifdef VBOX_WITH_USB
464	rc = pdmR3UsbVMInitComplete(pVM);
465	if (RT_FAILURE(rc))
466	{
467	Log(("pdmR3DevInit: returns %Rrc\n", rc));
468	return rc;
469	}
470	#endif
471
472	LogFlow(("pdmR3DevInit: returns %Rrc\n", VINF_SUCCESS));
473	return VINF_SUCCESS;
474	}
475
476
477	/**
478	* Lookups a device structure by name.
479	* @internal
480	*/
481	PPDMDEV pdmR3DevLookup(PVM pVM, const char *pszName)
482	{
483	size_t cchName = strlen(pszName);
484	for (PPDMDEV pDev = pVM->pdm.s.pDevs; pDev; pDev = pDev->pNext)
485	if ( pDev->cchName == cchName
486	&& !strcmp(pDev->pReg->szName, pszName))
487	return pDev;
488	return NULL;
489	}
490
491
492	/**
493	* Loads the device modules.
494	*
495	* @returns VBox status code.
496	* @param pVM The cross context VM structure.
497	*/
498	static int pdmR3DevLoadModules(PVM pVM)
499	{
500	/*
501	* Initialize the callback structure.
502	*/
503	PDMDEVREGCBINT RegCB;
504	RegCB.Core.u32Version = PDM_DEVREG_CB_VERSION;
505	RegCB.Core.pfnRegister = pdmR3DevReg_Register;
506	RegCB.pVM = pVM;
507	RegCB.pCfgNode = NULL;
508
509	#ifdef VBOX_WITH_NEW_APIC
510	/*
511	* Load the internal VMM APIC device.
512	*/
513	int rc2 = pdmR3DevReg_Register(&RegCB.Core, &g_DeviceAPIC);
514	AssertRCReturn(rc2, rc2);
515	#endif
516
517	/*
518	* Load the builtin module.
519	*/
520	PCFGMNODE pDevicesNode = CFGMR3GetChild(CFGMR3GetRoot(pVM), "PDM/Devices");
521	bool fLoadBuiltin;
522	int rc = CFGMR3QueryBool(pDevicesNode, "LoadBuiltin", &fLoadBuiltin);
523	if (rc == VERR_CFGM_VALUE_NOT_FOUND \|\| rc == VERR_CFGM_NO_PARENT)
524	fLoadBuiltin = true;
525	else if (RT_FAILURE(rc))
526	{
527	AssertMsgFailed(("Configuration error: Querying boolean \"LoadBuiltin\" failed with %Rrc\n", rc));
528	return rc;
529	}
530	if (fLoadBuiltin)
531	{
532	/* make filename */
533	char pszFilename = pdmR3FileR3("VBoxDD", true /fShared*/);
534	if (!pszFilename)
535	return VERR_NO_TMP_MEMORY;
536	rc = pdmR3DevLoad(pVM, &RegCB, pszFilename, "VBoxDD");
537	RTMemTmpFree(pszFilename);
538	if (RT_FAILURE(rc))
539	return rc;
540
541	/* make filename */
542	pszFilename = pdmR3FileR3("VBoxDD2", true /fShared/);
543	if (!pszFilename)
544	return VERR_NO_TMP_MEMORY;
545	rc = pdmR3DevLoad(pVM, &RegCB, pszFilename, "VBoxDD2");
546	RTMemTmpFree(pszFilename);
547	if (RT_FAILURE(rc))
548	return rc;
549	}
550
551	/*
552	* Load additional device modules.
553	*/
554	PCFGMNODE pCur;
555	for (pCur = CFGMR3GetFirstChild(pDevicesNode); pCur; pCur = CFGMR3GetNextChild(pCur))
556	{
557	/*
558	* Get the name and path.
559	*/
560	char szName[PDMMOD_NAME_LEN];
561	rc = CFGMR3GetName(pCur, &szName[0], sizeof(szName));
562	if (rc == VERR_CFGM_NOT_ENOUGH_SPACE)
563	{
564	AssertMsgFailed(("configuration error: The module name is too long, cchName=%zu.\n", CFGMR3GetNameLen(pCur)));
565	return VERR_PDM_MODULE_NAME_TOO_LONG;
566	}
567	else if (RT_FAILURE(rc))
568	{
569	AssertMsgFailed(("CFGMR3GetName -> %Rrc.\n", rc));
570	return rc;
571	}
572
573	/* the path is optional, if no path the module name + path is used. */
574	char szFilename[RTPATH_MAX];
575	rc = CFGMR3QueryString(pCur, "Path", &szFilename[0], sizeof(szFilename));
576	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
577	strcpy(szFilename, szName);
578	else if (RT_FAILURE(rc))
579	{
580	AssertMsgFailed(("configuration error: Failure to query the module path, rc=%Rrc.\n", rc));
581	return rc;
582	}
583
584	/* prepend path? */
585	if (!RTPathHavePath(szFilename))
586	{
587	char psz = pdmR3FileR3(szFilename, false /fShared*/);
588	if (!psz)
589	return VERR_NO_TMP_MEMORY;
590	size_t cch = strlen(psz) + 1;
591	if (cch > sizeof(szFilename))
592	{
593	RTMemTmpFree(psz);
594	AssertMsgFailed(("Filename too long! cch=%d '%s'\n", cch, psz));
595	return VERR_FILENAME_TOO_LONG;
596	}
597	memcpy(szFilename, psz, cch);
598	RTMemTmpFree(psz);
599	}
600
601	/*
602	* Load the module and register it's devices.
603	*/
604	RegCB.pCfgNode = pCur;
605	rc = pdmR3DevLoad(pVM, &RegCB, szFilename, szName);
606	if (RT_FAILURE(rc))
607	return rc;
608	}
609
610	return VINF_SUCCESS;
611	}
612
613
614	/**
615	* Loads one device module and call the registration entry point.
616	*
617	* @returns VBox status code.
618	* @param pVM The cross context VM structure.
619	* @param pRegCB The registration callback stuff.
620	* @param pszFilename Module filename.
621	* @param pszName Module name.
622	*/
623	static int pdmR3DevLoad(PVM pVM, PPDMDEVREGCBINT pRegCB, const char pszFilename, const char pszName)
624	{
625	/*
626	* Load it.
627	*/
628	int rc = pdmR3LoadR3U(pVM->pUVM, pszFilename, pszName);
629	if (RT_SUCCESS(rc))
630	{
631	/*
632	* Get the registration export and call it.
633	*/
634	FNPDMVBOXDEVICESREGISTER *pfnVBoxDevicesRegister;
635	rc = PDMR3LdrGetSymbolR3(pVM, pszName, "VBoxDevicesRegister", (void **)&pfnVBoxDevicesRegister);
636	if (RT_SUCCESS(rc))
637	{
638	Log(("PDM: Calling VBoxDevicesRegister (%p) of %s (%s)\n", pfnVBoxDevicesRegister, pszName, pszFilename));
639	rc = pfnVBoxDevicesRegister(&pRegCB->Core, VBOX_VERSION);
640	if (RT_SUCCESS(rc))
641	Log(("PDM: Successfully loaded device module %s (%s).\n", pszName, pszFilename));
642	else
643	AssertMsgFailed(("VBoxDevicesRegister failed with rc=%Rrc for module %s (%s)\n", rc, pszName, pszFilename));
644	}
645	else
646	{
647	AssertMsgFailed(("Failed to locate 'VBoxDevicesRegister' in %s (%s) rc=%Rrc\n", pszName, pszFilename, rc));
648	if (rc == VERR_SYMBOL_NOT_FOUND)
649	rc = VERR_PDM_NO_REGISTRATION_EXPORT;
650	}
651	}
652	else
653	AssertMsgFailed(("Failed to load %s %s!\n", pszFilename, pszName));
654	return rc;
655	}
656
657
658	/**
659	* @interface_method_impl{PDMDEVREGCB,pfnRegister}
660	*/
661	static DECLCALLBACK(int) pdmR3DevReg_Register(PPDMDEVREGCB pCallbacks, PCPDMDEVREG pReg)
662	{
663	/*
664	* Validate the registration structure.
665	*/
666	Assert(pReg);
667	AssertMsgReturn(pReg->u32Version == PDM_DEVREG_VERSION,
668	("Unknown struct version %#x!\n", pReg->u32Version),
669	VERR_PDM_UNKNOWN_DEVREG_VERSION);
670
671	AssertMsgReturn( pReg->szName[0]
672	&& strlen(pReg->szName) < sizeof(pReg->szName)
673	&& pdmR3IsValidName(pReg->szName),
674	("Invalid name '%.*s'\n", sizeof(pReg->szName), pReg->szName),
675	VERR_PDM_INVALID_DEVICE_REGISTRATION);
676	AssertMsgReturn( !(pReg->fFlags & PDM_DEVREG_FLAGS_RC)
677	\|\| ( pReg->szRCMod[0]
678	&& strlen(pReg->szRCMod) < sizeof(pReg->szRCMod)),
679	("Invalid GC module name '%s' - (Device %s)\n", pReg->szRCMod, pReg->szName),
680	VERR_PDM_INVALID_DEVICE_REGISTRATION);
681	AssertMsgReturn( !(pReg->fFlags & PDM_DEVREG_FLAGS_R0)
682	\|\| ( pReg->szR0Mod[0]
683	&& strlen(pReg->szR0Mod) < sizeof(pReg->szR0Mod)),
684	("Invalid R0 module name '%s' - (Device %s)\n", pReg->szR0Mod, pReg->szName),
685	VERR_PDM_INVALID_DEVICE_REGISTRATION);
686	AssertMsgReturn((pReg->fFlags & PDM_DEVREG_FLAGS_HOST_BITS_MASK) == PDM_DEVREG_FLAGS_HOST_BITS_DEFAULT,
687	("Invalid host bits flags! fFlags=%#x (Device %s)\n", pReg->fFlags, pReg->szName),
688	VERR_PDM_INVALID_DEVICE_HOST_BITS);
689	AssertMsgReturn((pReg->fFlags & PDM_DEVREG_FLAGS_GUEST_BITS_MASK),
690	("Invalid guest bits flags! fFlags=%#x (Device %s)\n", pReg->fFlags, pReg->szName),
691	VERR_PDM_INVALID_DEVICE_REGISTRATION);
692	AssertMsgReturn(pReg->fClass,
693	("No class! (Device %s)\n", pReg->szName),
694	VERR_PDM_INVALID_DEVICE_REGISTRATION);
695	AssertMsgReturn(pReg->cMaxInstances > 0,
696	("Max instances %u! (Device %s)\n", pReg->cMaxInstances, pReg->szName),
697	VERR_PDM_INVALID_DEVICE_REGISTRATION);
698	AssertMsgReturn(pReg->cbInstance <= (uint32_t)(pReg->fFlags & (PDM_DEVREG_FLAGS_RC \| PDM_DEVREG_FLAGS_R0) ? 96 * _1K : _1M),
699	("Instance size %d bytes! (Device %s)\n", pReg->cbInstance, pReg->szName),
700	VERR_PDM_INVALID_DEVICE_REGISTRATION);
701	AssertMsgReturn(pReg->pfnConstruct,
702	("No constructor! (Device %s)\n", pReg->szName),
703	VERR_PDM_INVALID_DEVICE_REGISTRATION);
704	AssertLogRelMsgReturn((pReg->fFlags & PDM_DEVREG_FLAGS_GUEST_BITS_MASK) == PDM_DEVREG_FLAGS_GUEST_BITS_DEFAULT,
705	("PDM: Rejected device '%s' because it didn't match the guest bits.\n", pReg->szName),
706	VERR_PDM_INVALID_DEVICE_GUEST_BITS);
707	AssertLogRelMsg(pReg->u32VersionEnd == PDM_DEVREG_VERSION,
708	("u32VersionEnd=%#x, expected %#x. (szName=%s)\n",
709	pReg->u32VersionEnd, PDM_DEVREG_VERSION, pReg->szName));
710
711	/*
712	* Check for duplicate and find FIFO entry at the same time.
713	*/
714	PCPDMDEVREGCBINT pRegCB = (PCPDMDEVREGCBINT)pCallbacks;
715	PPDMDEV pDevPrev = NULL;
716	PPDMDEV pDev = pRegCB->pVM->pdm.s.pDevs;
717	for (; pDev; pDevPrev = pDev, pDev = pDev->pNext)
718	AssertMsgReturn(strcmp(pDev->pReg->szName, pReg->szName),
719	("Device '%s' already exists\n", pReg->szName),
720	VERR_PDM_DEVICE_NAME_CLASH);
721
722	/*
723	* Allocate new device structure, initialize and insert it into the list.
724	*/
725	int rc;
726	pDev = (PPDMDEV)MMR3HeapAlloc(pRegCB->pVM, MM_TAG_PDM_DEVICE, sizeof(*pDev));
727	if (pDev)
728	{
729	pDev->pNext = NULL;
730	pDev->cInstances = 0;
731	pDev->pInstances = NULL;
732	pDev->pReg = pReg;
733	pDev->cchName = (uint32_t)strlen(pReg->szName);
734	rc = CFGMR3QueryStringAllocDef( pRegCB->pCfgNode, "RCSearchPath", &pDev->pszRCSearchPath, NULL);
735	if (RT_SUCCESS(rc))
736	rc = CFGMR3QueryStringAllocDef(pRegCB->pCfgNode, "R0SearchPath", &pDev->pszR0SearchPath, NULL);
737	if (RT_SUCCESS(rc))
738	{
739	if (pDevPrev)
740	pDevPrev->pNext = pDev;
741	else
742	pRegCB->pVM->pdm.s.pDevs = pDev;
743	Log(("PDM: Registered device '%s'\n", pReg->szName));
744	return VINF_SUCCESS;
745	}
746
747	MMR3HeapFree(pDev);
748	}
749	else
750	rc = VERR_NO_MEMORY;
751	return rc;
752	}
753
754
755	/**
756	* Locates a LUN.
757	*
758	* @returns VBox status code.
759	* @param pVM The cross context VM structure.
760	* @param pszDevice Device name.
761	* @param iInstance Device instance.
762	* @param iLun The Logical Unit to obtain the interface of.
763	* @param ppLun Where to store the pointer to the LUN if found.
764	* @thread Try only do this in EMT...
765	*/
766	int pdmR3DevFindLun(PVM pVM, const char *pszDevice, unsigned iInstance, unsigned iLun, PPPDMLUN ppLun)
767	{
768	/*
769	* Iterate registered devices looking for the device.
770	*/
771	size_t cchDevice = strlen(pszDevice);
772	for (PPDMDEV pDev = pVM->pdm.s.pDevs; pDev; pDev = pDev->pNext)
773	{
774	if ( pDev->cchName == cchDevice
775	&& !memcmp(pDev->pReg->szName, pszDevice, cchDevice))
776	{
777	/*
778	* Iterate device instances.
779	*/
780	for (PPDMDEVINS pDevIns = pDev->pInstances; pDevIns; pDevIns = pDevIns->Internal.s.pPerDeviceNextR3)
781	{
782	if (pDevIns->iInstance == iInstance)
783	{
784	/*
785	* Iterate luns.
786	*/
787	for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext)
788	{
789	if (pLun->iLun == iLun)
790	{
791	*ppLun = pLun;
792	return VINF_SUCCESS;
793	}
794	}
795	return VERR_PDM_LUN_NOT_FOUND;
796	}
797	}
798	return VERR_PDM_DEVICE_INSTANCE_NOT_FOUND;
799	}
800	}
801	return VERR_PDM_DEVICE_NOT_FOUND;
802	}
803
804
805	/**
806	* Attaches a preconfigured driver to an existing device instance.
807	*
808	* This is used to change drivers and suchlike at runtime.
809	*
810	* @returns VBox status code.
811	* @param pUVM The user mode VM handle.
812	* @param pszDevice Device name.
813	* @param iInstance Device instance.
814	* @param iLun The Logical Unit to obtain the interface of.
815	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
816	* @param ppBase Where to store the base interface pointer. Optional.
817	* @thread EMT
818	*/
819	VMMR3DECL(int) PDMR3DeviceAttach(PUVM pUVM, const char *pszDevice, unsigned iInstance, unsigned iLun, uint32_t fFlags, PPPDMIBASE ppBase)
820	{
821	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
822	PVM pVM = pUVM->pVM;
823	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
824	VM_ASSERT_EMT(pVM);
825	LogFlow(("PDMR3DeviceAttach: pszDevice=%p:{%s} iInstance=%d iLun=%d fFlags=%#x ppBase=%p\n",
826	pszDevice, pszDevice, iInstance, iLun, fFlags, ppBase));
827
828	/*
829	* Find the LUN in question.
830	*/
831	PPDMLUN pLun;
832	int rc = pdmR3DevFindLun(pVM, pszDevice, iInstance, iLun, &pLun);
833	if (RT_SUCCESS(rc))
834	{
835	/*
836	* Can we attach anything at runtime?
837	*/
838	PPDMDEVINS pDevIns = pLun->pDevIns;
839	if (pDevIns->pReg->pfnAttach)
840	{
841	if (!pLun->pTop)
842	{
843	PDMCritSectEnter(pDevIns->pCritSectRoR3, VERR_IGNORED);
844	rc = pDevIns->pReg->pfnAttach(pDevIns, iLun, fFlags);
845	PDMCritSectLeave(pDevIns->pCritSectRoR3);
846	}
847	else
848	rc = VERR_PDM_DRIVER_ALREADY_ATTACHED;
849	}
850	else
851	rc = VERR_PDM_DEVICE_NO_RT_ATTACH;
852
853	if (ppBase)
854	*ppBase = pLun->pTop ? &pLun->pTop->IBase : NULL;
855	}
856	else if (ppBase)
857	*ppBase = NULL;
858
859	if (ppBase)
860	LogFlow(("PDMR3DeviceAttach: returns %Rrc ppBase=%p\n", rc, ppBase));
861	else
862	LogFlow(("PDMR3DeviceAttach: returns %Rrc\n", rc));
863	return rc;
864	}
865
866
867	/**
868	* Detaches a driver chain from an existing device instance.
869	*
870	* This is used to change drivers and suchlike at runtime.
871	*
872	* @returns VBox status code.
873	* @param pUVM The user mode VM handle.
874	* @param pszDevice Device name.
875	* @param iInstance Device instance.
876	* @param iLun The Logical Unit to obtain the interface of.
877	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
878	* @thread EMT
879	*/
880	VMMR3DECL(int) PDMR3DeviceDetach(PUVM pUVM, const char *pszDevice, unsigned iInstance, unsigned iLun, uint32_t fFlags)
881	{
882	return PDMR3DriverDetach(pUVM, pszDevice, iInstance, iLun, NULL, 0, fFlags);
883	}
884
885
886	/**
887	* References the critical section associated with a device for the use by a
888	* timer or similar created by the device.
889	*
890	* @returns Pointer to the critical section.
891	* @param pVM The cross context VM structure.
892	* @param pDevIns The device instance in question.
893	*
894	* @internal
895	*/
896	VMMR3_INT_DECL(PPDMCRITSECT) PDMR3DevGetCritSect(PVM pVM, PPDMDEVINS pDevIns)
897	{
898	VM_ASSERT_EMT(pVM); RT_NOREF_PV(pVM);
899	VM_ASSERT_STATE(pVM, VMSTATE_CREATING);
900	AssertPtr(pDevIns);
901
902	PPDMCRITSECT pCritSect = pDevIns->pCritSectRoR3;
903	AssertPtr(pCritSect);
904	pCritSect->s.fUsedByTimerOrSimilar = true;
905
906	return pCritSect;
907	}
908
909
910	/**
911	* Attaches a preconfigured driver to an existing device or driver instance.
912	*
913	* This is used to change drivers and suchlike at runtime. The driver or device
914	* at the end of the chain will be told to attach to whatever is configured
915	* below it.
916	*
917	* @returns VBox status code.
918	* @param pUVM The user mode VM handle.
919	* @param pszDevice Device name.
920	* @param iInstance Device instance.
921	* @param iLun The Logical Unit to obtain the interface of.
922	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
923	* @param ppBase Where to store the base interface pointer. Optional.
924	*
925	* @thread EMT
926	*/
927	VMMR3DECL(int) PDMR3DriverAttach(PUVM pUVM, const char *pszDevice, unsigned iInstance, unsigned iLun, uint32_t fFlags, PPPDMIBASE ppBase)
928	{
929	LogFlow(("PDMR3DriverAttach: pszDevice=%p:{%s} iInstance=%d iLun=%d fFlags=%#x ppBase=%p\n",
930	pszDevice, pszDevice, iInstance, iLun, fFlags, ppBase));
931	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
932	PVM pVM = pUVM->pVM;
933	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
934	VM_ASSERT_EMT(pVM);
935
936	if (ppBase)
937	*ppBase = NULL;
938
939	/*
940	* Find the LUN in question.
941	*/
942	PPDMLUN pLun;
943	int rc = pdmR3DevFindLun(pVM, pszDevice, iInstance, iLun, &pLun);
944	if (RT_SUCCESS(rc))
945	{
946	/*
947	* Anything attached to the LUN?
948	*/
949	PPDMDRVINS pDrvIns = pLun->pTop;
950	if (!pDrvIns)
951	{
952	/* No, ask the device to attach to the new stuff. */
953	PPDMDEVINS pDevIns = pLun->pDevIns;
954	if (pDevIns->pReg->pfnAttach)
955	{
956	PDMCritSectEnter(pDevIns->pCritSectRoR3, VERR_IGNORED);
957	rc = pDevIns->pReg->pfnAttach(pDevIns, iLun, fFlags);
958	if (RT_SUCCESS(rc) && ppBase)
959	*ppBase = pLun->pTop ? &pLun->pTop->IBase : NULL;
960	PDMCritSectLeave(pDevIns->pCritSectRoR3);
961	}
962	else
963	rc = VERR_PDM_DEVICE_NO_RT_ATTACH;
964	}
965	else
966	{
967	/* Yes, find the bottom most driver and ask it to attach to the new stuff. */
968	while (pDrvIns->Internal.s.pDown)
969	pDrvIns = pDrvIns->Internal.s.pDown;
970	if (pDrvIns->pReg->pfnAttach)
971	{
972	rc = pDrvIns->pReg->pfnAttach(pDrvIns, fFlags);
973	if (RT_SUCCESS(rc) && ppBase)
974	*ppBase = pDrvIns->Internal.s.pDown
975	? &pDrvIns->Internal.s.pDown->IBase
976	: NULL;
977	}
978	else
979	rc = VERR_PDM_DRIVER_NO_RT_ATTACH;
980	}
981	}
982
983	if (ppBase)
984	LogFlow(("PDMR3DriverAttach: returns %Rrc ppBase=%p\n", rc, ppBase));
985	else
986	LogFlow(("PDMR3DriverAttach: returns %Rrc\n", rc));
987	return rc;
988	}
989
990
991	/**
992	* Detaches the specified driver instance.
993	*
994	* This is used to replumb drivers at runtime for simulating hot plugging and
995	* media changes.
996	*
997	* This is a superset of PDMR3DeviceDetach. It allows detaching drivers from
998	* any driver or device by specifying the driver to start detaching at. The
999	* only prerequisite is that the driver or device above implements the
1000	* pfnDetach callback (PDMDRVREG / PDMDEVREG).
1001	*
1002	* @returns VBox status code.
1003	* @param pUVM The user mode VM handle.
1004	* @param pszDevice Device name.
1005	* @param iDevIns Device instance.
1006	* @param iLun The Logical Unit in which to look for the driver.
1007	* @param pszDriver The name of the driver which to detach. If NULL
1008	* then the entire driver chain is detatched.
1009	* @param iOccurance The occurrence of that driver in the chain. This is
1010	* usually 0.
1011	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
1012	* @thread EMT
1013	*/
1014	VMMR3DECL(int) PDMR3DriverDetach(PUVM pUVM, const char *pszDevice, unsigned iDevIns, unsigned iLun,
1015	const char *pszDriver, unsigned iOccurance, uint32_t fFlags)
1016	{
1017	LogFlow(("PDMR3DriverDetach: pszDevice=%p:{%s} iDevIns=%u iLun=%u pszDriver=%p:{%s} iOccurance=%u fFlags=%#x\n",
1018	pszDevice, pszDevice, iDevIns, iLun, pszDriver, pszDriver, iOccurance, fFlags));
1019	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1020	PVM pVM = pUVM->pVM;
1021	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1022	VM_ASSERT_EMT(pVM);
1023	AssertPtr(pszDevice);
1024	AssertPtrNull(pszDriver);
1025	Assert(iOccurance == 0 \|\| pszDriver);
1026	Assert(!(fFlags & ~(PDM_TACH_FLAGS_NOT_HOT_PLUG)));
1027
1028	/*
1029	* Find the LUN in question.
1030	*/
1031	PPDMLUN pLun;
1032	int rc = pdmR3DevFindLun(pVM, pszDevice, iDevIns, iLun, &pLun);
1033	if (RT_SUCCESS(rc))
1034	{
1035	/*
1036	* Locate the driver.
1037	*/
1038	PPDMDRVINS pDrvIns = pLun->pTop;
1039	if (pDrvIns)
1040	{
1041	if (pszDriver)
1042	{
1043	while (pDrvIns)
1044	{
1045	if (!strcmp(pDrvIns->pReg->szName, pszDriver))
1046	{
1047	if (iOccurance == 0)
1048	break;
1049	iOccurance--;
1050	}
1051	pDrvIns = pDrvIns->Internal.s.pDown;
1052	}
1053	}
1054	if (pDrvIns)
1055	rc = pdmR3DrvDetach(pDrvIns, fFlags);
1056	else
1057	rc = VERR_PDM_DRIVER_INSTANCE_NOT_FOUND;
1058	}
1059	else
1060	rc = VINF_PDM_NO_DRIVER_ATTACHED_TO_LUN;
1061	}
1062
1063	LogFlow(("PDMR3DriverDetach: returns %Rrc\n", rc));
1064	return rc;
1065	}
1066
1067
1068	/**
1069	* Runtime detach and reattach of a new driver chain or sub chain.
1070	*
1071	* This is intended to be called on a non-EMT thread, this will instantiate the
1072	* new driver (sub-)chain, and then the EMTs will do the actual replumbing. The
1073	* destruction of the old driver chain will be taken care of on the calling
1074	* thread.
1075	*
1076	* @returns VBox status code.
1077	* @param pUVM The user mode VM handle.
1078	* @param pszDevice Device name.
1079	* @param iDevIns Device instance.
1080	* @param iLun The Logical Unit in which to look for the driver.
1081	* @param pszDriver The name of the driver which to detach and replace.
1082	* If NULL then the entire driver chain is to be
1083	* reattached.
1084	* @param iOccurance The occurrence of that driver in the chain. This is
1085	* usually 0.
1086	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
1087	* @param pCfg The configuration of the new driver chain that is
1088	* going to be attached. The subtree starts with the
1089	* node containing a Driver key, a Config subtree and
1090	* optionally an AttachedDriver subtree.
1091	* If this parameter is NULL, then this call will work
1092	* like at a non-pause version of PDMR3DriverDetach.
1093	* @param ppBase Where to store the base interface pointer to the new
1094	* driver. Optional.
1095	*
1096	* @thread Any thread. The EMTs will be involved at some point though.
1097	*/
1098	VMMR3DECL(int) PDMR3DriverReattach(PUVM pUVM, const char *pszDevice, unsigned iDevIns, unsigned iLun,
1099	const char *pszDriver, unsigned iOccurance, uint32_t fFlags,
1100	PCFGMNODE pCfg, PPPDMIBASE ppBase)
1101	{
1102	NOREF(pUVM); NOREF(pszDevice); NOREF(iDevIns); NOREF(iLun); NOREF(pszDriver); NOREF(iOccurance);
1103	NOREF(fFlags); NOREF(pCfg); NOREF(ppBase);
1104	return VERR_NOT_IMPLEMENTED;
1105	}
1106

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source: vbox/trunk/src/VBox/VMM/VMMR3/PDMDevice.cpp@ 62659

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