PDMDevice.cpp@ 80239

Last change on this file since 80239 was 80191, checked in by vboxsync, 5 years ago
VMM/r3: Refactored VMCPU enumeration in preparation that aCpus will be replaced with a pointer array. Removed two raw-mode offset members from the CPUM and CPUMCPU sub-structures. bugref:9217 bugref:9517
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File size: 40.4 KB

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1	/* $Id: PDMDevice.cpp 80191 2019-08-08 00:36:57Z vboxsync $ */
2	/** @file
3	* PDM - Pluggable Device and Driver Manager, Device parts.
4	*/
5
6	/*
7	* Copyright (C) 2006-2019 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 VBOX_BUGREF_9217_PART_I
23	#define LOG_GROUP LOG_GROUP_PDM_DEVICE
24	#include "PDMInternal.h"
25	#include <VBox/vmm/pdm.h>
26	#include <VBox/vmm/mm.h>
27	#include <VBox/vmm/pgm.h>
28	#include <VBox/vmm/iom.h>
29	#include <VBox/vmm/hm.h>
30	#include <VBox/vmm/cfgm.h>
31	#include <VBox/vmm/apic.h>
32	#ifdef VBOX_WITH_REM
33	# include <VBox/vmm/rem.h>
34	#endif
35	#include <VBox/vmm/dbgf.h>
36	#include <VBox/vmm/vm.h>
37	#include <VBox/vmm/uvm.h>
38	#include <VBox/vmm/vmm.h>
39
40	#include <VBox/version.h>
41	#include <VBox/log.h>
42	#include <VBox/err.h>
43	#include <iprt/alloc.h>
44	#include <iprt/alloca.h>
45	#include <iprt/asm.h>
46	#include <iprt/assert.h>
47	#include <iprt/path.h>
48	#include <iprt/semaphore.h>
49	#include <iprt/string.h>
50	#include <iprt/thread.h>
51
52
53	/*********************************************************************************************************************************
54	* Structures and Typedefs *
55	*********************************************************************************************************************************/
56	/**
57	* Internal callback structure pointer.
58	* The main purpose is to define the extra data we associate
59	* with PDMDEVREGCB so we can find the VM instance and so on.
60	*/
61	typedef struct PDMDEVREGCBINT
62	{
63	/** The callback structure. */
64	PDMDEVREGCB Core;
65	/** A bit of padding. */
66	uint32_t u32[4];
67	/** VM Handle. */
68	PVM pVM;
69	/** Pointer to the configuration node the registrations should be
70	* associated with. Can be NULL. */
71	PCFGMNODE pCfgNode;
72	} PDMDEVREGCBINT;
73	/** Pointer to a PDMDEVREGCBINT structure. */
74	typedef PDMDEVREGCBINT *PPDMDEVREGCBINT;
75	/** Pointer to a const PDMDEVREGCBINT structure. */
76	typedef const PDMDEVREGCBINT *PCPDMDEVREGCBINT;
77
78
79	/*********************************************************************************************************************************
80	* Internal Functions *
81	*********************************************************************************************************************************/
82	static DECLCALLBACK(int) pdmR3DevReg_Register(PPDMDEVREGCB pCallbacks, PCPDMDEVREG pReg);
83	static int pdmR3DevLoadModules(PVM pVM);
84	static int pdmR3DevLoad(PVM pVM, PPDMDEVREGCBINT pRegCB, const char pszFilename, const char pszName);
85
86
87
88
89	/**
90	* This function will initialize the devices for this VM instance.
91	*
92	*
93	* First of all this mean loading the builtin device and letting them
94	* register themselves. Beyond that any additional device modules are
95	* loaded and called for registration.
96	*
97	* Then the device configuration is enumerated, the instantiation order
98	* is determined, and finally they are instantiated.
99	*
100	* After all devices have been successfully instantiated the primary
101	* PCI Bus device is called to emulate the PCI BIOS, i.e. making the
102	* resource assignments. If there is no PCI device, this step is of course
103	* skipped.
104	*
105	* Finally the init completion routines of the instantiated devices
106	* are called.
107	*
108	* @returns VBox status code.
109	* @param pVM The cross context VM structure.
110	*/
111	int pdmR3DevInit(PVM pVM)
112	{
113	LogFlow(("pdmR3DevInit:\n"));
114
115	AssertRelease(!(RT_UOFFSETOF(PDMDEVINS, achInstanceData) & 15));
116	AssertRelease(sizeof(pVM->pdm.s.pDevInstances->Internal.s) <= sizeof(pVM->pdm.s.pDevInstances->Internal.padding));
117
118	/*
119	* Load device modules.
120	*/
121	int rc = pdmR3DevLoadModules(pVM);
122	if (RT_FAILURE(rc))
123	return rc;
124
125	#ifdef VBOX_WITH_USB
126	/* ditto for USB Devices. */
127	rc = pdmR3UsbLoadModules(pVM);
128	if (RT_FAILURE(rc))
129	return rc;
130	#endif
131
132	/*
133	* Get the RC & R0 devhlps and create the devhlp R3 task queue.
134	*/
135	PCPDMDEVHLPRC pHlpRC = NIL_RTRCPTR;
136	if (VM_IS_RAW_MODE_ENABLED(pVM))
137	{
138	rc = PDMR3LdrGetSymbolRC(pVM, NULL, "g_pdmRCDevHlp", &pHlpRC);
139	AssertReleaseRCReturn(rc, rc);
140	}
141
142	PCPDMDEVHLPR0 pHlpR0;
143	rc = PDMR3LdrGetSymbolR0(pVM, NULL, "g_pdmR0DevHlp", &pHlpR0);
144	AssertReleaseRCReturn(rc, rc);
145
146	rc = PDMR3QueueCreateInternal(pVM, sizeof(PDMDEVHLPTASK), 8, 0, pdmR3DevHlpQueueConsumer, true, "DevHlp",
147	&pVM->pdm.s.pDevHlpQueueR3);
148	AssertRCReturn(rc, rc);
149	pVM->pdm.s.pDevHlpQueueR0 = PDMQueueR0Ptr(pVM->pdm.s.pDevHlpQueueR3);
150	pVM->pdm.s.pDevHlpQueueRC = PDMQueueRCPtr(pVM->pdm.s.pDevHlpQueueR3);
151
152
153	/*
154	*
155	* Enumerate the device instance configurations
156	* and come up with a instantiation order.
157	*
158	*/
159	/* Switch to /Devices, which contains the device instantiations. */
160	PCFGMNODE pDevicesNode = CFGMR3GetChild(CFGMR3GetRoot(pVM), "Devices");
161
162	/*
163	* Count the device instances.
164	*/
165	PCFGMNODE pCur;
166	PCFGMNODE pInstanceNode;
167	unsigned cDevs = 0;
168	for (pCur = CFGMR3GetFirstChild(pDevicesNode); pCur; pCur = CFGMR3GetNextChild(pCur))
169	for (pInstanceNode = CFGMR3GetFirstChild(pCur); pInstanceNode; pInstanceNode = CFGMR3GetNextChild(pInstanceNode))
170	cDevs++;
171	if (!cDevs)
172	{
173	Log(("PDM: No devices were configured!\n"));
174	return VINF_SUCCESS;
175	}
176	Log2(("PDM: cDevs=%u\n", cDevs));
177
178	/*
179	* Collect info on each device instance.
180	*/
181	struct DEVORDER
182	{
183	/** Configuration node. */
184	PCFGMNODE pNode;
185	/** Pointer to device. */
186	PPDMDEV pDev;
187	/** Init order. */
188	uint32_t u32Order;
189	/** VBox instance number. */
190	uint32_t iInstance;
191	} paDevs = (struct DEVORDER )alloca(sizeof(paDevs[0]) * (cDevs + 1)); /* (One extra for swapping) */
192	Assert(paDevs);
193	unsigned i = 0;
194	for (pCur = CFGMR3GetFirstChild(pDevicesNode); pCur; pCur = CFGMR3GetNextChild(pCur))
195	{
196	/* Get the device name. */
197	char szName[sizeof(paDevs[0].pDev->pReg->szName)];
198	rc = CFGMR3GetName(pCur, szName, sizeof(szName));
199	AssertMsgRCReturn(rc, ("Configuration error: device name is too long (or something)! rc=%Rrc\n", rc), rc);
200
201	/* Find the device. */
202	PPDMDEV pDev = pdmR3DevLookup(pVM, szName);
203	AssertLogRelMsgReturn(pDev, ("Configuration error: device '%s' not found!\n", szName), VERR_PDM_DEVICE_NOT_FOUND);
204
205	/* Configured priority or use default based on device class? */
206	uint32_t u32Order;
207	rc = CFGMR3QueryU32(pCur, "Priority", &u32Order);
208	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
209	{
210	uint32_t u32 = pDev->pReg->fClass;
211	for (u32Order = 1; !(u32 & u32Order); u32Order <<= 1)
212	/* nop */;
213	}
214	else
215	AssertMsgRCReturn(rc, ("Configuration error: reading \"Priority\" for the '%s' device failed rc=%Rrc!\n", szName, rc), rc);
216
217	/* Enumerate the device instances. */
218	uint32_t const iStart = i;
219	for (pInstanceNode = CFGMR3GetFirstChild(pCur); pInstanceNode; pInstanceNode = CFGMR3GetNextChild(pInstanceNode))
220	{
221	paDevs[i].pNode = pInstanceNode;
222	paDevs[i].pDev = pDev;
223	paDevs[i].u32Order = u32Order;
224
225	/* Get the instance number. */
226	char szInstance[32];
227	rc = CFGMR3GetName(pInstanceNode, szInstance, sizeof(szInstance));
228	AssertMsgRCReturn(rc, ("Configuration error: instance name is too long (or something)! rc=%Rrc\n", rc), rc);
229	char *pszNext = NULL;
230	rc = RTStrToUInt32Ex(szInstance, &pszNext, 0, &paDevs[i].iInstance);
231	AssertMsgRCReturn(rc, ("Configuration error: RTStrToInt32Ex failed on the instance name '%s'! rc=%Rrc\n", szInstance, rc), rc);
232	AssertMsgReturn(!*pszNext, ("Configuration error: the instance name '%s' isn't all digits. (%s)\n", szInstance, pszNext), VERR_INVALID_PARAMETER);
233
234	/* next instance */
235	i++;
236	}
237
238	/* check the number of instances */
239	if (i - iStart > pDev->pReg->cMaxInstances)
240	AssertLogRelMsgFailedReturn(("Configuration error: Too many instances of %s was configured: %u, max %u\n",
241	szName, i - iStart, pDev->pReg->cMaxInstances),
242	VERR_PDM_TOO_MANY_DEVICE_INSTANCES);
243	} /* devices */
244	Assert(i == cDevs);
245
246	/*
247	* Sort (bubble) the device array ascending on u32Order and instance number
248	* for a device.
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	\|\| ( paDevs[i].u32Order == paDevs[i + 1].u32Order
257	&& paDevs[i].iInstance > paDevs[i + 1].iInstance
258	&& paDevs[i].pDev == paDevs[i + 1].pDev) )
259	{
260	paDevs[cDevs] = paDevs[i + 1];
261	paDevs[i + 1] = paDevs[i];
262	paDevs[i] = paDevs[cDevs];
263	j = i;
264	}
265	c = j;
266	}
267
268
269	/*
270	*
271	* Instantiate the devices.
272	*
273	*/
274	for (i = 0; i < cDevs; i++)
275	{
276	/*
277	* Gather a bit of config.
278	*/
279	/* trusted */
280	bool fTrusted;
281	rc = CFGMR3QueryBool(paDevs[i].pNode, "Trusted", &fTrusted);
282	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
283	fTrusted = false;
284	else if (RT_FAILURE(rc))
285	{
286	AssertMsgFailed(("configuration error: failed to query boolean \"Trusted\", rc=%Rrc\n", rc));
287	return rc;
288	}
289	/* config node */
290	PCFGMNODE pConfigNode = CFGMR3GetChild(paDevs[i].pNode, "Config");
291	if (!pConfigNode)
292	{
293	rc = CFGMR3InsertNode(paDevs[i].pNode, "Config", &pConfigNode);
294	if (RT_FAILURE(rc))
295	{
296	AssertMsgFailed(("Failed to create Config node! rc=%Rrc\n", rc));
297	return rc;
298	}
299	}
300	CFGMR3SetRestrictedRoot(pConfigNode);
301
302	/*
303	* Allocate the device instance and critical section.
304	*/
305	AssertReturn(paDevs[i].pDev->cInstances < paDevs[i].pDev->pReg->cMaxInstances, VERR_PDM_TOO_MANY_DEVICE_INSTANCES);
306	size_t cb = RT_UOFFSETOF_DYN(PDMDEVINS, achInstanceData[paDevs[i].pDev->pReg->cbInstance]);
307	cb = RT_ALIGN_Z(cb, 16);
308	PPDMDEVINS pDevIns;
309	if (paDevs[i].pDev->pReg->fFlags & (PDM_DEVREG_FLAGS_RC \| PDM_DEVREG_FLAGS_R0))
310	rc = MMR3HyperAllocOnceNoRel(pVM, cb, 0, MM_TAG_PDM_DEVICE, (void **)&pDevIns);
311	else
312	rc = MMR3HeapAllocZEx(pVM, MM_TAG_PDM_DEVICE, cb, (void **)&pDevIns);
313	AssertLogRelMsgRCReturn(rc,
314	("Failed to allocate %d bytes of instance data for device '%s'. rc=%Rrc\n",
315	cb, paDevs[i].pDev->pReg->szName, rc),
316	rc);
317	PPDMCRITSECT pCritSect;
318	if (paDevs[i].pDev->pReg->fFlags & (PDM_DEVREG_FLAGS_RC \| PDM_DEVREG_FLAGS_R0))
319	rc = MMHyperAlloc(pVM, sizeof(pCritSect), 0, MM_TAG_PDM_DEVICE, (void *)&pCritSect);
320	else
321	rc = MMR3HeapAllocZEx(pVM, MM_TAG_PDM_DEVICE, sizeof(pCritSect), (void *)&pCritSect);
322	AssertLogRelMsgRCReturn(rc, ("Failed to allocate a critical section for the device (%Rrc)\n", rc), rc);
323
324	/*
325	* Initialize it.
326	*/
327	pDevIns->u32Version = PDM_DEVINS_VERSION;
328	pDevIns->iInstance = paDevs[i].iInstance;
329	//pDevIns->Internal.s.pNextR3 = NULL;
330	//pDevIns->Internal.s.pPerDeviceNextR3 = NULL;
331	pDevIns->Internal.s.pDevR3 = paDevs[i].pDev;
332	pDevIns->Internal.s.pVMR3 = pVM;
333	pDevIns->Internal.s.pVMR0 = pVM->pVMR0;
334	pDevIns->Internal.s.pVMRC = pVM->pVMRC;
335	//pDevIns->Internal.s.pLunsR3 = NULL;
336	pDevIns->Internal.s.pCfgHandle = paDevs[i].pNode;
337	//pDevIns->Internal.s.pHeadPciDevR3 = NULL;
338	//pDevIns->Internal.s.pHeadPciDevR0 = 0;
339	//pDevIns->Internal.s.pHeadPciDevRC = 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	* Iterate thru the device instances and work the callback.
432	*/
433	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
434	{
435	if (pDevIns->pReg->pfnInitComplete)
436	{
437	PDMCritSectEnter(pDevIns->pCritSectRoR3, VERR_IGNORED);
438	rc = pDevIns->pReg->pfnInitComplete(pDevIns);
439	PDMCritSectLeave(pDevIns->pCritSectRoR3);
440	if (RT_FAILURE(rc))
441	{
442	AssertMsgFailed(("InitComplete on device '%s'/%d failed with rc=%Rrc\n",
443	pDevIns->pReg->szName, pDevIns->iInstance, rc));
444	return rc;
445	}
446	}
447	}
448
449	#ifdef VBOX_WITH_USB
450	rc = pdmR3UsbVMInitComplete(pVM);
451	if (RT_FAILURE(rc))
452	{
453	Log(("pdmR3DevInit: returns %Rrc\n", rc));
454	return rc;
455	}
456	#endif
457
458	LogFlow(("pdmR3DevInit: returns %Rrc\n", VINF_SUCCESS));
459	return VINF_SUCCESS;
460	}
461
462
463	/**
464	* Lookups a device structure by name.
465	* @internal
466	*/
467	PPDMDEV pdmR3DevLookup(PVM pVM, const char *pszName)
468	{
469	size_t cchName = strlen(pszName);
470	for (PPDMDEV pDev = pVM->pdm.s.pDevs; pDev; pDev = pDev->pNext)
471	if ( pDev->cchName == cchName
472	&& !strcmp(pDev->pReg->szName, pszName))
473	return pDev;
474	return NULL;
475	}
476
477
478	/**
479	* Loads the device modules.
480	*
481	* @returns VBox status code.
482	* @param pVM The cross context VM structure.
483	*/
484	static int pdmR3DevLoadModules(PVM pVM)
485	{
486	/*
487	* Initialize the callback structure.
488	*/
489	PDMDEVREGCBINT RegCB;
490	RegCB.Core.u32Version = PDM_DEVREG_CB_VERSION;
491	RegCB.Core.pfnRegister = pdmR3DevReg_Register;
492	RegCB.pVM = pVM;
493	RegCB.pCfgNode = NULL;
494
495	/*
496	* Load the internal VMM APIC device.
497	*/
498	int rc = APICR3RegisterDevice(&RegCB.Core);
499	AssertRCReturn(rc, rc);
500
501	/*
502	* Load the builtin module.
503	*/
504	PCFGMNODE pDevicesNode = CFGMR3GetChild(CFGMR3GetRoot(pVM), "PDM/Devices");
505	bool fLoadBuiltin;
506	rc = CFGMR3QueryBool(pDevicesNode, "LoadBuiltin", &fLoadBuiltin);
507	if (rc == VERR_CFGM_VALUE_NOT_FOUND \|\| rc == VERR_CFGM_NO_PARENT)
508	fLoadBuiltin = true;
509	else if (RT_FAILURE(rc))
510	{
511	AssertMsgFailed(("Configuration error: Querying boolean \"LoadBuiltin\" failed with %Rrc\n", rc));
512	return rc;
513	}
514	if (fLoadBuiltin)
515	{
516	/* make filename */
517	char pszFilename = pdmR3FileR3("VBoxDD", true /fShared*/);
518	if (!pszFilename)
519	return VERR_NO_TMP_MEMORY;
520	rc = pdmR3DevLoad(pVM, &RegCB, pszFilename, "VBoxDD");
521	RTMemTmpFree(pszFilename);
522	if (RT_FAILURE(rc))
523	return rc;
524
525	/* make filename */
526	pszFilename = pdmR3FileR3("VBoxDD2", true /fShared/);
527	if (!pszFilename)
528	return VERR_NO_TMP_MEMORY;
529	rc = pdmR3DevLoad(pVM, &RegCB, pszFilename, "VBoxDD2");
530	RTMemTmpFree(pszFilename);
531	if (RT_FAILURE(rc))
532	return rc;
533	}
534
535	/*
536	* Load additional device modules.
537	*/
538	PCFGMNODE pCur;
539	for (pCur = CFGMR3GetFirstChild(pDevicesNode); pCur; pCur = CFGMR3GetNextChild(pCur))
540	{
541	/*
542	* Get the name and path.
543	*/
544	char szName[PDMMOD_NAME_LEN];
545	rc = CFGMR3GetName(pCur, &szName[0], sizeof(szName));
546	if (rc == VERR_CFGM_NOT_ENOUGH_SPACE)
547	{
548	AssertMsgFailed(("configuration error: The module name is too long, cchName=%zu.\n", CFGMR3GetNameLen(pCur)));
549	return VERR_PDM_MODULE_NAME_TOO_LONG;
550	}
551	else if (RT_FAILURE(rc))
552	{
553	AssertMsgFailed(("CFGMR3GetName -> %Rrc.\n", rc));
554	return rc;
555	}
556
557	/* the path is optional, if no path the module name + path is used. */
558	char szFilename[RTPATH_MAX];
559	rc = CFGMR3QueryString(pCur, "Path", &szFilename[0], sizeof(szFilename));
560	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
561	strcpy(szFilename, szName);
562	else if (RT_FAILURE(rc))
563	{
564	AssertMsgFailed(("configuration error: Failure to query the module path, rc=%Rrc.\n", rc));
565	return rc;
566	}
567
568	/* prepend path? */
569	if (!RTPathHavePath(szFilename))
570	{
571	char psz = pdmR3FileR3(szFilename, false /fShared*/);
572	if (!psz)
573	return VERR_NO_TMP_MEMORY;
574	size_t cch = strlen(psz) + 1;
575	if (cch > sizeof(szFilename))
576	{
577	RTMemTmpFree(psz);
578	AssertMsgFailed(("Filename too long! cch=%d '%s'\n", cch, psz));
579	return VERR_FILENAME_TOO_LONG;
580	}
581	memcpy(szFilename, psz, cch);
582	RTMemTmpFree(psz);
583	}
584
585	/*
586	* Load the module and register it's devices.
587	*/
588	RegCB.pCfgNode = pCur;
589	rc = pdmR3DevLoad(pVM, &RegCB, szFilename, szName);
590	if (RT_FAILURE(rc))
591	return rc;
592	}
593
594	return VINF_SUCCESS;
595	}
596
597
598	/**
599	* Loads one device module and call the registration entry point.
600	*
601	* @returns VBox status code.
602	* @param pVM The cross context VM structure.
603	* @param pRegCB The registration callback stuff.
604	* @param pszFilename Module filename.
605	* @param pszName Module name.
606	*/
607	static int pdmR3DevLoad(PVM pVM, PPDMDEVREGCBINT pRegCB, const char pszFilename, const char pszName)
608	{
609	/*
610	* Load it.
611	*/
612	int rc = pdmR3LoadR3U(pVM->pUVM, pszFilename, pszName);
613	if (RT_SUCCESS(rc))
614	{
615	/*
616	* Get the registration export and call it.
617	*/
618	FNPDMVBOXDEVICESREGISTER *pfnVBoxDevicesRegister;
619	rc = PDMR3LdrGetSymbolR3(pVM, pszName, "VBoxDevicesRegister", (void **)&pfnVBoxDevicesRegister);
620	if (RT_SUCCESS(rc))
621	{
622	Log(("PDM: Calling VBoxDevicesRegister (%p) of %s (%s)\n", pfnVBoxDevicesRegister, pszName, pszFilename));
623	rc = pfnVBoxDevicesRegister(&pRegCB->Core, VBOX_VERSION);
624	if (RT_SUCCESS(rc))
625	Log(("PDM: Successfully loaded device module %s (%s).\n", pszName, pszFilename));
626	else
627	AssertMsgFailed(("VBoxDevicesRegister failed with rc=%Rrc for module %s (%s)\n", rc, pszName, pszFilename));
628	}
629	else
630	{
631	AssertMsgFailed(("Failed to locate 'VBoxDevicesRegister' in %s (%s) rc=%Rrc\n", pszName, pszFilename, rc));
632	if (rc == VERR_SYMBOL_NOT_FOUND)
633	rc = VERR_PDM_NO_REGISTRATION_EXPORT;
634	}
635	}
636	else
637	AssertMsgFailed(("Failed to load %s %s!\n", pszFilename, pszName));
638	return rc;
639	}
640
641
642	/**
643	* @interface_method_impl{PDMDEVREGCB,pfnRegister}
644	*/
645	static DECLCALLBACK(int) pdmR3DevReg_Register(PPDMDEVREGCB pCallbacks, PCPDMDEVREG pReg)
646	{
647	/*
648	* Validate the registration structure.
649	*/
650	Assert(pReg);
651	AssertMsgReturn(pReg->u32Version == PDM_DEVREG_VERSION,
652	("Unknown struct version %#x!\n", pReg->u32Version),
653	VERR_PDM_UNKNOWN_DEVREG_VERSION);
654
655	AssertMsgReturn( pReg->szName[0]
656	&& strlen(pReg->szName) < sizeof(pReg->szName)
657	&& pdmR3IsValidName(pReg->szName),
658	("Invalid name '%.*s'\n", sizeof(pReg->szName), pReg->szName),
659	VERR_PDM_INVALID_DEVICE_REGISTRATION);
660	AssertMsgReturn( !(pReg->fFlags & PDM_DEVREG_FLAGS_RC)
661	\|\| ( pReg->szRCMod[0]
662	&& strlen(pReg->szRCMod) < sizeof(pReg->szRCMod)),
663	("Invalid GC module name '%s' - (Device %s)\n", pReg->szRCMod, pReg->szName),
664	VERR_PDM_INVALID_DEVICE_REGISTRATION);
665	AssertMsgReturn( !(pReg->fFlags & PDM_DEVREG_FLAGS_R0)
666	\|\| ( pReg->szR0Mod[0]
667	&& strlen(pReg->szR0Mod) < sizeof(pReg->szR0Mod)),
668	("Invalid R0 module name '%s' - (Device %s)\n", pReg->szR0Mod, pReg->szName),
669	VERR_PDM_INVALID_DEVICE_REGISTRATION);
670	AssertMsgReturn((pReg->fFlags & PDM_DEVREG_FLAGS_HOST_BITS_MASK) == PDM_DEVREG_FLAGS_HOST_BITS_DEFAULT,
671	("Invalid host bits flags! fFlags=%#x (Device %s)\n", pReg->fFlags, pReg->szName),
672	VERR_PDM_INVALID_DEVICE_HOST_BITS);
673	AssertMsgReturn((pReg->fFlags & PDM_DEVREG_FLAGS_GUEST_BITS_MASK),
674	("Invalid guest bits flags! fFlags=%#x (Device %s)\n", pReg->fFlags, pReg->szName),
675	VERR_PDM_INVALID_DEVICE_REGISTRATION);
676	AssertMsgReturn(pReg->fClass,
677	("No class! (Device %s)\n", pReg->szName),
678	VERR_PDM_INVALID_DEVICE_REGISTRATION);
679	AssertMsgReturn(pReg->cMaxInstances > 0,
680	("Max instances %u! (Device %s)\n", pReg->cMaxInstances, pReg->szName),
681	VERR_PDM_INVALID_DEVICE_REGISTRATION);
682	AssertMsgReturn(pReg->cbInstance <= (uint32_t)(pReg->fFlags & (PDM_DEVREG_FLAGS_RC \| PDM_DEVREG_FLAGS_R0) ? 96 * _1K : _1M),
683	("Instance size %d bytes! (Device %s)\n", pReg->cbInstance, pReg->szName),
684	VERR_PDM_INVALID_DEVICE_REGISTRATION);
685	AssertMsgReturn(pReg->pfnConstruct,
686	("No constructor! (Device %s)\n", pReg->szName),
687	VERR_PDM_INVALID_DEVICE_REGISTRATION);
688	AssertLogRelMsgReturn((pReg->fFlags & PDM_DEVREG_FLAGS_GUEST_BITS_MASK) == PDM_DEVREG_FLAGS_GUEST_BITS_DEFAULT,
689	("PDM: Rejected device '%s' because it didn't match the guest bits.\n", pReg->szName),
690	VERR_PDM_INVALID_DEVICE_GUEST_BITS);
691	AssertLogRelMsg(pReg->u32VersionEnd == PDM_DEVREG_VERSION,
692	("u32VersionEnd=%#x, expected %#x. (szName=%s)\n",
693	pReg->u32VersionEnd, PDM_DEVREG_VERSION, pReg->szName));
694
695	/*
696	* Check for duplicate and find FIFO entry at the same time.
697	*/
698	PCPDMDEVREGCBINT pRegCB = (PCPDMDEVREGCBINT)pCallbacks;
699	PPDMDEV pDevPrev = NULL;
700	PPDMDEV pDev = pRegCB->pVM->pdm.s.pDevs;
701	for (; pDev; pDevPrev = pDev, pDev = pDev->pNext)
702	AssertMsgReturn(strcmp(pDev->pReg->szName, pReg->szName),
703	("Device '%s' already exists\n", pReg->szName),
704	VERR_PDM_DEVICE_NAME_CLASH);
705
706	/*
707	* Allocate new device structure, initialize and insert it into the list.
708	*/
709	int rc;
710	pDev = (PPDMDEV)MMR3HeapAlloc(pRegCB->pVM, MM_TAG_PDM_DEVICE, sizeof(*pDev));
711	if (pDev)
712	{
713	pDev->pNext = NULL;
714	pDev->cInstances = 0;
715	pDev->pInstances = NULL;
716	pDev->pReg = pReg;
717	pDev->cchName = (uint32_t)strlen(pReg->szName);
718	rc = CFGMR3QueryStringAllocDef( pRegCB->pCfgNode, "RCSearchPath", &pDev->pszRCSearchPath, NULL);
719	if (RT_SUCCESS(rc))
720	rc = CFGMR3QueryStringAllocDef(pRegCB->pCfgNode, "R0SearchPath", &pDev->pszR0SearchPath, NULL);
721	if (RT_SUCCESS(rc))
722	{
723	if (pDevPrev)
724	pDevPrev->pNext = pDev;
725	else
726	pRegCB->pVM->pdm.s.pDevs = pDev;
727	Log(("PDM: Registered device '%s'\n", pReg->szName));
728	return VINF_SUCCESS;
729	}
730
731	MMR3HeapFree(pDev);
732	}
733	else
734	rc = VERR_NO_MEMORY;
735	return rc;
736	}
737
738
739	/**
740	* Locates a LUN.
741	*
742	* @returns VBox status code.
743	* @param pVM The cross context VM structure.
744	* @param pszDevice Device name.
745	* @param iInstance Device instance.
746	* @param iLun The Logical Unit to obtain the interface of.
747	* @param ppLun Where to store the pointer to the LUN if found.
748	* @thread Try only do this in EMT...
749	*/
750	int pdmR3DevFindLun(PVM pVM, const char *pszDevice, unsigned iInstance, unsigned iLun, PPPDMLUN ppLun)
751	{
752	/*
753	* Iterate registered devices looking for the device.
754	*/
755	size_t cchDevice = strlen(pszDevice);
756	for (PPDMDEV pDev = pVM->pdm.s.pDevs; pDev; pDev = pDev->pNext)
757	{
758	if ( pDev->cchName == cchDevice
759	&& !memcmp(pDev->pReg->szName, pszDevice, cchDevice))
760	{
761	/*
762	* Iterate device instances.
763	*/
764	for (PPDMDEVINS pDevIns = pDev->pInstances; pDevIns; pDevIns = pDevIns->Internal.s.pPerDeviceNextR3)
765	{
766	if (pDevIns->iInstance == iInstance)
767	{
768	/*
769	* Iterate luns.
770	*/
771	for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext)
772	{
773	if (pLun->iLun == iLun)
774	{
775	*ppLun = pLun;
776	return VINF_SUCCESS;
777	}
778	}
779	return VERR_PDM_LUN_NOT_FOUND;
780	}
781	}
782	return VERR_PDM_DEVICE_INSTANCE_NOT_FOUND;
783	}
784	}
785	return VERR_PDM_DEVICE_NOT_FOUND;
786	}
787
788
789	/**
790	* Attaches a preconfigured driver to an existing device instance.
791	*
792	* This is used to change drivers and suchlike at runtime.
793	*
794	* @returns VBox status code.
795	* @param pUVM The user mode VM handle.
796	* @param pszDevice Device name.
797	* @param iInstance Device instance.
798	* @param iLun The Logical Unit to obtain the interface of.
799	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
800	* @param ppBase Where to store the base interface pointer. Optional.
801	* @thread EMT
802	*/
803	VMMR3DECL(int) PDMR3DeviceAttach(PUVM pUVM, const char *pszDevice, unsigned iInstance, unsigned iLun, uint32_t fFlags, PPPDMIBASE ppBase)
804	{
805	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
806	PVM pVM = pUVM->pVM;
807	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
808	VM_ASSERT_EMT(pVM);
809	LogFlow(("PDMR3DeviceAttach: pszDevice=%p:{%s} iInstance=%d iLun=%d fFlags=%#x ppBase=%p\n",
810	pszDevice, pszDevice, iInstance, iLun, fFlags, ppBase));
811
812	/*
813	* Find the LUN in question.
814	*/
815	PPDMLUN pLun;
816	int rc = pdmR3DevFindLun(pVM, pszDevice, iInstance, iLun, &pLun);
817	if (RT_SUCCESS(rc))
818	{
819	/*
820	* Can we attach anything at runtime?
821	*/
822	PPDMDEVINS pDevIns = pLun->pDevIns;
823	if (pDevIns->pReg->pfnAttach)
824	{
825	if (!pLun->pTop)
826	{
827	PDMCritSectEnter(pDevIns->pCritSectRoR3, VERR_IGNORED);
828	rc = pDevIns->pReg->pfnAttach(pDevIns, iLun, fFlags);
829	PDMCritSectLeave(pDevIns->pCritSectRoR3);
830	}
831	else
832	rc = VERR_PDM_DRIVER_ALREADY_ATTACHED;
833	}
834	else
835	rc = VERR_PDM_DEVICE_NO_RT_ATTACH;
836
837	if (ppBase)
838	*ppBase = pLun->pTop ? &pLun->pTop->IBase : NULL;
839	}
840	else if (ppBase)
841	*ppBase = NULL;
842
843	if (ppBase)
844	LogFlow(("PDMR3DeviceAttach: returns %Rrc ppBase=%p\n", rc, ppBase));
845	else
846	LogFlow(("PDMR3DeviceAttach: returns %Rrc\n", rc));
847	return rc;
848	}
849
850
851	/**
852	* Detaches a driver chain from an existing device instance.
853	*
854	* This is used to change drivers and suchlike at runtime.
855	*
856	* @returns VBox status code.
857	* @param pUVM The user mode VM handle.
858	* @param pszDevice Device name.
859	* @param iInstance Device instance.
860	* @param iLun The Logical Unit to obtain the interface of.
861	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
862	* @thread EMT
863	*/
864	VMMR3DECL(int) PDMR3DeviceDetach(PUVM pUVM, const char *pszDevice, unsigned iInstance, unsigned iLun, uint32_t fFlags)
865	{
866	return PDMR3DriverDetach(pUVM, pszDevice, iInstance, iLun, NULL, 0, fFlags);
867	}
868
869
870	/**
871	* References the critical section associated with a device for the use by a
872	* timer or similar created by the device.
873	*
874	* @returns Pointer to the critical section.
875	* @param pVM The cross context VM structure.
876	* @param pDevIns The device instance in question.
877	*
878	* @internal
879	*/
880	VMMR3_INT_DECL(PPDMCRITSECT) PDMR3DevGetCritSect(PVM pVM, PPDMDEVINS pDevIns)
881	{
882	VM_ASSERT_EMT(pVM); RT_NOREF_PV(pVM);
883	VM_ASSERT_STATE(pVM, VMSTATE_CREATING);
884	AssertPtr(pDevIns);
885
886	PPDMCRITSECT pCritSect = pDevIns->pCritSectRoR3;
887	AssertPtr(pCritSect);
888	pCritSect->s.fUsedByTimerOrSimilar = true;
889
890	return pCritSect;
891	}
892
893
894	/**
895	* Attaches a preconfigured driver to an existing device or driver instance.
896	*
897	* This is used to change drivers and suchlike at runtime. The driver or device
898	* at the end of the chain will be told to attach to whatever is configured
899	* below it.
900	*
901	* @returns VBox status code.
902	* @param pUVM The user mode VM handle.
903	* @param pszDevice Device name.
904	* @param iInstance Device instance.
905	* @param iLun The Logical Unit to obtain the interface of.
906	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
907	* @param ppBase Where to store the base interface pointer. Optional.
908	*
909	* @thread EMT
910	*/
911	VMMR3DECL(int) PDMR3DriverAttach(PUVM pUVM, const char *pszDevice, unsigned iInstance, unsigned iLun, uint32_t fFlags, PPPDMIBASE ppBase)
912	{
913	LogFlow(("PDMR3DriverAttach: pszDevice=%p:{%s} iInstance=%d iLun=%d fFlags=%#x ppBase=%p\n",
914	pszDevice, pszDevice, iInstance, iLun, fFlags, ppBase));
915	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
916	PVM pVM = pUVM->pVM;
917	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
918	VM_ASSERT_EMT(pVM);
919
920	if (ppBase)
921	*ppBase = NULL;
922
923	/*
924	* Find the LUN in question.
925	*/
926	PPDMLUN pLun;
927	int rc = pdmR3DevFindLun(pVM, pszDevice, iInstance, iLun, &pLun);
928	if (RT_SUCCESS(rc))
929	{
930	/*
931	* Anything attached to the LUN?
932	*/
933	PPDMDRVINS pDrvIns = pLun->pTop;
934	if (!pDrvIns)
935	{
936	/* No, ask the device to attach to the new stuff. */
937	PPDMDEVINS pDevIns = pLun->pDevIns;
938	if (pDevIns->pReg->pfnAttach)
939	{
940	PDMCritSectEnter(pDevIns->pCritSectRoR3, VERR_IGNORED);
941	rc = pDevIns->pReg->pfnAttach(pDevIns, iLun, fFlags);
942	if (RT_SUCCESS(rc) && ppBase)
943	*ppBase = pLun->pTop ? &pLun->pTop->IBase : NULL;
944	PDMCritSectLeave(pDevIns->pCritSectRoR3);
945	}
946	else
947	rc = VERR_PDM_DEVICE_NO_RT_ATTACH;
948	}
949	else
950	{
951	/* Yes, find the bottom most driver and ask it to attach to the new stuff. */
952	while (pDrvIns->Internal.s.pDown)
953	pDrvIns = pDrvIns->Internal.s.pDown;
954	if (pDrvIns->pReg->pfnAttach)
955	{
956	rc = pDrvIns->pReg->pfnAttach(pDrvIns, fFlags);
957	if (RT_SUCCESS(rc) && ppBase)
958	*ppBase = pDrvIns->Internal.s.pDown
959	? &pDrvIns->Internal.s.pDown->IBase
960	: NULL;
961	}
962	else
963	rc = VERR_PDM_DRIVER_NO_RT_ATTACH;
964	}
965	}
966
967	if (ppBase)
968	LogFlow(("PDMR3DriverAttach: returns %Rrc ppBase=%p\n", rc, ppBase));
969	else
970	LogFlow(("PDMR3DriverAttach: returns %Rrc\n", rc));
971	return rc;
972	}
973
974
975	/**
976	* Detaches the specified driver instance.
977	*
978	* This is used to replumb drivers at runtime for simulating hot plugging and
979	* media changes.
980	*
981	* This is a superset of PDMR3DeviceDetach. It allows detaching drivers from
982	* any driver or device by specifying the driver to start detaching at. The
983	* only prerequisite is that the driver or device above implements the
984	* pfnDetach callback (PDMDRVREG / PDMDEVREG).
985	*
986	* @returns VBox status code.
987	* @param pUVM The user mode VM handle.
988	* @param pszDevice Device name.
989	* @param iDevIns Device instance.
990	* @param iLun The Logical Unit in which to look for the driver.
991	* @param pszDriver The name of the driver which to detach. If NULL
992	* then the entire driver chain is detatched.
993	* @param iOccurrence The occurrence of that driver in the chain. This is
994	* usually 0.
995	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
996	* @thread EMT
997	*/
998	VMMR3DECL(int) PDMR3DriverDetach(PUVM pUVM, const char *pszDevice, unsigned iDevIns, unsigned iLun,
999	const char *pszDriver, unsigned iOccurrence, uint32_t fFlags)
1000	{
1001	LogFlow(("PDMR3DriverDetach: pszDevice=%p:{%s} iDevIns=%u iLun=%u pszDriver=%p:{%s} iOccurrence=%u fFlags=%#x\n",
1002	pszDevice, pszDevice, iDevIns, iLun, pszDriver, pszDriver, iOccurrence, fFlags));
1003	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1004	PVM pVM = pUVM->pVM;
1005	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1006	VM_ASSERT_EMT(pVM);
1007	AssertPtr(pszDevice);
1008	AssertPtrNull(pszDriver);
1009	Assert(iOccurrence == 0 \|\| pszDriver);
1010	Assert(!(fFlags & ~(PDM_TACH_FLAGS_NOT_HOT_PLUG)));
1011
1012	/*
1013	* Find the LUN in question.
1014	*/
1015	PPDMLUN pLun;
1016	int rc = pdmR3DevFindLun(pVM, pszDevice, iDevIns, iLun, &pLun);
1017	if (RT_SUCCESS(rc))
1018	{
1019	/*
1020	* Locate the driver.
1021	*/
1022	PPDMDRVINS pDrvIns = pLun->pTop;
1023	if (pDrvIns)
1024	{
1025	if (pszDriver)
1026	{
1027	while (pDrvIns)
1028	{
1029	if (!strcmp(pDrvIns->pReg->szName, pszDriver))
1030	{
1031	if (iOccurrence == 0)
1032	break;
1033	iOccurrence--;
1034	}
1035	pDrvIns = pDrvIns->Internal.s.pDown;
1036	}
1037	}
1038	if (pDrvIns)
1039	rc = pdmR3DrvDetach(pDrvIns, fFlags);
1040	else
1041	rc = VERR_PDM_DRIVER_INSTANCE_NOT_FOUND;
1042	}
1043	else
1044	rc = VINF_PDM_NO_DRIVER_ATTACHED_TO_LUN;
1045	}
1046
1047	LogFlow(("PDMR3DriverDetach: returns %Rrc\n", rc));
1048	return rc;
1049	}
1050
1051
1052	/**
1053	* Runtime detach and reattach of a new driver chain or sub chain.
1054	*
1055	* This is intended to be called on a non-EMT thread, this will instantiate the
1056	* new driver (sub-)chain, and then the EMTs will do the actual replumbing. The
1057	* destruction of the old driver chain will be taken care of on the calling
1058	* thread.
1059	*
1060	* @returns VBox status code.
1061	* @param pUVM The user mode VM handle.
1062	* @param pszDevice Device name.
1063	* @param iDevIns Device instance.
1064	* @param iLun The Logical Unit in which to look for the driver.
1065	* @param pszDriver The name of the driver which to detach and replace.
1066	* If NULL then the entire driver chain is to be
1067	* reattached.
1068	* @param iOccurrence The occurrence of that driver in the chain. This is
1069	* usually 0.
1070	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
1071	* @param pCfg The configuration of the new driver chain that is
1072	* going to be attached. The subtree starts with the
1073	* node containing a Driver key, a Config subtree and
1074	* optionally an AttachedDriver subtree.
1075	* If this parameter is NULL, then this call will work
1076	* like at a non-pause version of PDMR3DriverDetach.
1077	* @param ppBase Where to store the base interface pointer to the new
1078	* driver. Optional.
1079	*
1080	* @thread Any thread. The EMTs will be involved at some point though.
1081	*/
1082	VMMR3DECL(int) PDMR3DriverReattach(PUVM pUVM, const char *pszDevice, unsigned iDevIns, unsigned iLun,
1083	const char *pszDriver, unsigned iOccurrence, uint32_t fFlags,
1084	PCFGMNODE pCfg, PPPDMIBASE ppBase)
1085	{
1086	NOREF(pUVM); NOREF(pszDevice); NOREF(iDevIns); NOREF(iLun); NOREF(pszDriver); NOREF(iOccurrence);
1087	NOREF(fFlags); NOREF(pCfg); NOREF(ppBase);
1088	return VERR_NOT_IMPLEMENTED;
1089	}
1090

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source: vbox/trunk/src/VBox/VMM/VMMR3/PDMDevice.cpp@ 80239

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