PDMDriver.cpp@ 45530

Last change on this file since 45530 was 45152, checked in by vboxsync, 12 years ago
PDMCritSectRw: Early morphing stage - untested, ring-3 only.
Property svn:eol-style set to `native` Property svn:keywords set to `Id Revision`
File size: 70.1 KB

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1	/* $Id: PDMDriver.cpp 45152 2013-03-23 20:36:23Z vboxsync $ */
2	/** @file
3	* PDM - Pluggable Device and Driver Manager, Driver parts.
4	*/
5
6	/*
7	* Copyright (C) 2006-2013 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_DRIVER
23	#include "PDMInternal.h"
24	#include <VBox/vmm/pdm.h>
25	#include <VBox/vmm/mm.h>
26	#include <VBox/vmm/cfgm.h>
27	#include <VBox/vmm/vmm.h>
28	#include <VBox/sup.h>
29	#include <VBox/vmm/vm.h>
30	#include <VBox/version.h>
31	#include <VBox/err.h>
32
33	#include <VBox/log.h>
34	#include <iprt/assert.h>
35	#include <iprt/asm.h>
36	#include <iprt/ctype.h>
37	#include <iprt/mem.h>
38	#include <iprt/thread.h>
39	#include <iprt/path.h>
40	#include <iprt/string.h>
41
42
43	/*******************************************************************************
44	* Structures and Typedefs *
45	*******************************************************************************/
46	/**
47	* Internal callback structure pointer.
48	*
49	* The main purpose is to define the extra data we associate
50	* with PDMDRVREGCB so we can find the VM instance and so on.
51	*/
52	typedef struct PDMDRVREGCBINT
53	{
54	/** The callback structure. */
55	PDMDRVREGCB Core;
56	/** A bit of padding. */
57	uint32_t u32[4];
58	/** VM Handle. */
59	PVM pVM;
60	/** Pointer to the configuration node the registrations should be
61	* associated with. Can be NULL. */
62	PCFGMNODE pCfgNode;
63	} PDMDRVREGCBINT, *PPDMDRVREGCBINT;
64	typedef const PDMDRVREGCBINT *PCPDMDRVREGCBINT;
65
66
67	/*******************************************************************************
68	* Internal Functions *
69	*******************************************************************************/
70	static DECLCALLBACK(int) pdmR3DrvRegister(PCPDMDRVREGCB pCallbacks, PCPDMDRVREG pReg);
71	static int pdmR3DrvLoad(PVM pVM, PPDMDRVREGCBINT pRegCB, const char pszFilename, const char pszName);
72
73
74	/**
75	* Register drivers in a statically linked environment.
76	*
77	* @returns VBox status code.
78	* @param pVM Pointer to the VM.
79	* @param pfnCallback Driver registration callback
80	*/
81	VMMR3DECL(int) PDMR3DrvStaticRegistration(PVM pVM, FNPDMVBOXDRIVERSREGISTER pfnCallback)
82	{
83	/*
84	* The registration callbacks.
85	*/
86	PDMDRVREGCBINT RegCB;
87	RegCB.Core.u32Version = PDM_DRVREG_CB_VERSION;
88	RegCB.Core.pfnRegister = pdmR3DrvRegister;
89	RegCB.pVM = pVM;
90	RegCB.pCfgNode = NULL;
91
92	int rc = pfnCallback(&RegCB.Core, VBOX_VERSION);
93	if (RT_FAILURE(rc))
94	AssertMsgFailed(("VBoxDriversRegister failed with rc=%Rrc\n"));
95
96	return rc;
97	}
98
99
100	/**
101	* This function will initialize the drivers for this VM instance.
102	*
103	* First of all this mean loading the builtin drivers and letting them
104	* register themselves. Beyond that any additional driver modules are
105	* loaded and called for registration.
106	*
107	* @returns VBox status code.
108	* @param pVM Pointer to the VM.
109	*/
110	int pdmR3DrvInit(PVM pVM)
111	{
112	LogFlow(("pdmR3DrvInit:\n"));
113
114	AssertRelease(!(RT_OFFSETOF(PDMDRVINS, achInstanceData) & 15));
115	PPDMDRVINS pDrvInsAssert; NOREF(pDrvInsAssert);
116	AssertCompile(sizeof(pDrvInsAssert->Internal.s) <= sizeof(pDrvInsAssert->Internal.padding));
117	AssertRelease(sizeof(pDrvInsAssert->Internal.s) <= sizeof(pDrvInsAssert->Internal.padding));
118
119	/*
120	* The registration callbacks.
121	*/
122	PDMDRVREGCBINT RegCB;
123	RegCB.Core.u32Version = PDM_DRVREG_CB_VERSION;
124	RegCB.Core.pfnRegister = pdmR3DrvRegister;
125	RegCB.pVM = pVM;
126	RegCB.pCfgNode = NULL;
127
128	/*
129	* Load the builtin module
130	*/
131	PCFGMNODE pDriversNode = CFGMR3GetChild(CFGMR3GetRoot(pVM), "PDM/Drivers");
132	bool fLoadBuiltin;
133	int rc = CFGMR3QueryBool(pDriversNode, "LoadBuiltin", &fLoadBuiltin);
134	if (rc == VERR_CFGM_VALUE_NOT_FOUND \|\| rc == VERR_CFGM_NO_PARENT)
135	fLoadBuiltin = true;
136	else if (RT_FAILURE(rc))
137	{
138	AssertMsgFailed(("Configuration error: Querying boolean \"LoadBuiltin\" failed with %Rrc\n", rc));
139	return rc;
140	}
141	if (fLoadBuiltin)
142	{
143	/* make filename */
144	char pszFilename = pdmR3FileR3("VBoxDD", true /fShared*/);
145	if (!pszFilename)
146	return VERR_NO_TMP_MEMORY;
147	rc = pdmR3DrvLoad(pVM, &RegCB, pszFilename, "VBoxDD");
148	RTMemTmpFree(pszFilename);
149	if (RT_FAILURE(rc))
150	return rc;
151	}
152
153	/*
154	* Load additional driver modules.
155	*/
156	for (PCFGMNODE pCur = CFGMR3GetFirstChild(pDriversNode); pCur; pCur = CFGMR3GetNextChild(pCur))
157	{
158	/*
159	* Get the name and path.
160	*/
161	char szName[PDMMOD_NAME_LEN];
162	rc = CFGMR3GetName(pCur, &szName[0], sizeof(szName));
163	if (rc == VERR_CFGM_NOT_ENOUGH_SPACE)
164	{
165	AssertMsgFailed(("configuration error: The module name is too long, cchName=%zu.\n", CFGMR3GetNameLen(pCur)));
166	return VERR_PDM_MODULE_NAME_TOO_LONG;
167	}
168	else if (RT_FAILURE(rc))
169	{
170	AssertMsgFailed(("CFGMR3GetName -> %Rrc.\n", rc));
171	return rc;
172	}
173
174	/* the path is optional, if no path the module name + path is used. */
175	char szFilename[RTPATH_MAX];
176	rc = CFGMR3QueryString(pCur, "Path", &szFilename[0], sizeof(szFilename));
177	if (rc == VERR_CFGM_VALUE_NOT_FOUND \|\| rc == VERR_CFGM_NO_PARENT)
178	strcpy(szFilename, szName);
179	else if (RT_FAILURE(rc))
180	{
181	AssertMsgFailed(("configuration error: Failure to query the module path, rc=%Rrc.\n", rc));
182	return rc;
183	}
184
185	/* prepend path? */
186	if (!RTPathHavePath(szFilename))
187	{
188	char psz = pdmR3FileR3(szFilename, false /fShared*/);
189	if (!psz)
190	return VERR_NO_TMP_MEMORY;
191	size_t cch = strlen(psz) + 1;
192	if (cch > sizeof(szFilename))
193	{
194	RTMemTmpFree(psz);
195	AssertMsgFailed(("Filename too long! cch=%d '%s'\n", cch, psz));
196	return VERR_FILENAME_TOO_LONG;
197	}
198	memcpy(szFilename, psz, cch);
199	RTMemTmpFree(psz);
200	}
201
202	/*
203	* Load the module and register it's drivers.
204	*/
205	RegCB.pCfgNode = pCur;
206	rc = pdmR3DrvLoad(pVM, &RegCB, szFilename, szName);
207	if (RT_FAILURE(rc))
208	return rc;
209	}
210
211	LogFlow(("pdmR3DrvInit: returns VINF_SUCCESS\n"));
212	return VINF_SUCCESS;
213	}
214
215
216	/**
217	* Loads one driver module and call the registration entry point.
218	*
219	* @returns VBox status code.
220	* @param pVM Pointer to the VM.
221	* @param pRegCB The registration callback stuff.
222	* @param pszFilename Module filename.
223	* @param pszName Module name.
224	*/
225	static int pdmR3DrvLoad(PVM pVM, PPDMDRVREGCBINT pRegCB, const char pszFilename, const char pszName)
226	{
227	/*
228	* Load it.
229	*/
230	int rc = pdmR3LoadR3U(pVM->pUVM, pszFilename, pszName);
231	if (RT_SUCCESS(rc))
232	{
233	/*
234	* Get the registration export and call it.
235	*/
236	FNPDMVBOXDRIVERSREGISTER *pfnVBoxDriversRegister;
237	rc = PDMR3LdrGetSymbolR3(pVM, pszName, "VBoxDriversRegister", (void **)&pfnVBoxDriversRegister);
238	if (RT_SUCCESS(rc))
239	{
240	Log(("PDM: Calling VBoxDriversRegister (%p) of %s (%s)\n", pfnVBoxDriversRegister, pszName, pszFilename));
241	rc = pfnVBoxDriversRegister(&pRegCB->Core, VBOX_VERSION);
242	if (RT_SUCCESS(rc))
243	Log(("PDM: Successfully loaded driver module %s (%s).\n", pszName, pszFilename));
244	else
245	AssertMsgFailed(("VBoxDriversRegister failed with rc=%Rrc\n"));
246	}
247	else
248	{
249	AssertMsgFailed(("Failed to locate 'VBoxDriversRegister' in %s (%s) rc=%Rrc\n", pszName, pszFilename, rc));
250	if (rc == VERR_SYMBOL_NOT_FOUND)
251	rc = VERR_PDM_NO_REGISTRATION_EXPORT;
252	}
253	}
254	else
255	AssertMsgFailed(("Failed to load %s (%s) rc=%Rrc!\n", pszName, pszFilename, rc));
256	return rc;
257	}
258
259
260	/** @interface_method_impl{PDMDRVREGCB,pfnRegister} */
261	static DECLCALLBACK(int) pdmR3DrvRegister(PCPDMDRVREGCB pCallbacks, PCPDMDRVREG pReg)
262	{
263	/*
264	* Validate the registration structure.
265	*/
266	AssertPtrReturn(pReg, VERR_INVALID_POINTER);
267	AssertMsgReturn(pReg->u32Version == PDM_DRVREG_VERSION,
268	("%#x\n", pReg->u32Version),
269	VERR_PDM_UNKNOWN_DRVREG_VERSION);
270	AssertReturn(pReg->szName[0], VERR_PDM_INVALID_DRIVER_REGISTRATION);
271	AssertMsgReturn(RTStrEnd(pReg->szName, sizeof(pReg->szName)),
272	("%.*s\n", sizeof(pReg->szName), pReg->szName),
273	VERR_PDM_INVALID_DRIVER_REGISTRATION);
274	AssertMsgReturn(pdmR3IsValidName(pReg->szName), ("%.*s\n", pReg->szName),
275	VERR_PDM_INVALID_DRIVER_REGISTRATION);
276	AssertMsgReturn( !(pReg->fFlags & PDM_DRVREG_FLAGS_R0)
277	\|\| ( pReg->szR0Mod[0]
278	&& RTStrEnd(pReg->szR0Mod, sizeof(pReg->szR0Mod))),
279	("%s: %.*s\n", pReg->szName, sizeof(pReg->szR0Mod), pReg->szR0Mod),
280	VERR_PDM_INVALID_DRIVER_REGISTRATION);
281	AssertMsgReturn( !(pReg->fFlags & PDM_DRVREG_FLAGS_RC)
282	\|\| ( pReg->szRCMod[0]
283	&& RTStrEnd(pReg->szRCMod, sizeof(pReg->szRCMod))),
284	("%s: %.*s\n", pReg->szName, sizeof(pReg->szRCMod), pReg->szRCMod),
285	VERR_PDM_INVALID_DRIVER_REGISTRATION);
286	AssertMsgReturn(VALID_PTR(pReg->pszDescription),
287	("%s: %p\n", pReg->szName, pReg->pszDescription),
288	VERR_PDM_INVALID_DRIVER_REGISTRATION);
289	AssertMsgReturn(!(pReg->fFlags & ~(PDM_DRVREG_FLAGS_HOST_BITS_MASK \| PDM_DRVREG_FLAGS_R0 \| PDM_DRVREG_FLAGS_RC)),
290	("%s: %#x\n", pReg->szName, pReg->fFlags),
291	VERR_PDM_INVALID_DRIVER_REGISTRATION);
292	AssertMsgReturn((pReg->fFlags & PDM_DRVREG_FLAGS_HOST_BITS_MASK) == PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
293	("%s: %#x\n", pReg->szName, pReg->fFlags),
294	VERR_PDM_INVALID_DRIVER_HOST_BITS);
295	AssertMsgReturn(pReg->cMaxInstances > 0,
296	("%s: %#x\n", pReg->szName, pReg->cMaxInstances),
297	VERR_PDM_INVALID_DRIVER_REGISTRATION);
298	AssertMsgReturn(pReg->cbInstance <= _1M,
299	("%s: %#x\n", pReg->szName, pReg->cbInstance),
300	VERR_PDM_INVALID_DRIVER_REGISTRATION);
301	AssertMsgReturn(VALID_PTR(pReg->pfnConstruct),
302	("%s: %p\n", pReg->szName, pReg->pfnConstruct),
303	VERR_PDM_INVALID_DRIVER_REGISTRATION);
304	AssertMsgReturn(VALID_PTR(pReg->pfnRelocate) \|\| !(pReg->fFlags & PDM_DRVREG_FLAGS_RC),
305	("%s: %#x\n", pReg->szName, pReg->cbInstance),
306	VERR_PDM_INVALID_DRIVER_REGISTRATION);
307	AssertMsgReturn(pReg->pfnSoftReset == NULL,
308	("%s: %p\n", pReg->szName, pReg->pfnSoftReset),
309	VERR_PDM_INVALID_DRIVER_REGISTRATION);
310	AssertMsgReturn(pReg->u32VersionEnd == PDM_DRVREG_VERSION,
311	("%s: #x\n", pReg->szName, pReg->u32VersionEnd),
312	VERR_PDM_INVALID_DRIVER_REGISTRATION);
313
314	/*
315	* Check for duplicate and find FIFO entry at the same time.
316	*/
317	PCPDMDRVREGCBINT pRegCB = (PCPDMDRVREGCBINT)pCallbacks;
318	PPDMDRV pDrvPrev = NULL;
319	PPDMDRV pDrv = pRegCB->pVM->pdm.s.pDrvs;
320	for (; pDrv; pDrvPrev = pDrv, pDrv = pDrv->pNext)
321	{
322	if (!strcmp(pDrv->pReg->szName, pReg->szName))
323	{
324	AssertMsgFailed(("Driver '%s' already exists\n", pReg->szName));
325	return VERR_PDM_DRIVER_NAME_CLASH;
326	}
327	}
328
329	/*
330	* Allocate new driver structure and insert it into the list.
331	*/
332	int rc;
333	pDrv = (PPDMDRV)MMR3HeapAlloc(pRegCB->pVM, MM_TAG_PDM_DRIVER, sizeof(*pDrv));
334	if (pDrv)
335	{
336	pDrv->pNext = NULL;
337	pDrv->cInstances = 0;
338	pDrv->iNextInstance = 0;
339	pDrv->pReg = pReg;
340	rc = CFGMR3QueryStringAllocDef( pRegCB->pCfgNode, "RCSearchPath", &pDrv->pszRCSearchPath, NULL);
341	if (RT_SUCCESS(rc))
342	rc = CFGMR3QueryStringAllocDef(pRegCB->pCfgNode, "R0SearchPath", &pDrv->pszR0SearchPath, NULL);
343	if (RT_SUCCESS(rc))
344	{
345	if (pDrvPrev)
346	pDrvPrev->pNext = pDrv;
347	else
348	pRegCB->pVM->pdm.s.pDrvs = pDrv;
349	Log(("PDM: Registered driver '%s'\n", pReg->szName));
350	return VINF_SUCCESS;
351	}
352	MMR3HeapFree(pDrv);
353	}
354	else
355	rc = VERR_NO_MEMORY;
356	return rc;
357	}
358
359
360	/**
361	* Lookups a driver structure by name.
362	* @internal
363	*/
364	PPDMDRV pdmR3DrvLookup(PVM pVM, const char *pszName)
365	{
366	for (PPDMDRV pDrv = pVM->pdm.s.pDrvs; pDrv; pDrv = pDrv->pNext)
367	if (!strcmp(pDrv->pReg->szName, pszName))
368	return pDrv;
369	return NULL;
370	}
371
372
373	/**
374	* Transforms the driver chain as it's being instantiated.
375	*
376	* Worker for pdmR3DrvInstantiate.
377	*
378	* @returns VBox status code.
379	* @param pVM Pointer to the VM.
380	* @param pDrvAbove The driver above, NULL if top.
381	* @param pLun The LUN.
382	* @param ppNode The AttachedDriver node, replaced if any
383	* morphing took place.
384	*/
385	static int pdmR3DrvMaybeTransformChain(PVM pVM, PPDMDRVINS pDrvAbove, PPDMLUN pLun, PCFGMNODE *ppNode)
386	{
387	/*
388	* The typical state of affairs is that there are no injections.
389	*/
390	PCFGMNODE pCurTrans = CFGMR3GetFirstChild(CFGMR3GetChild(CFGMR3GetRoot(pVM), "PDM/DriverTransformations"));
391	if (!pCurTrans)
392	return VINF_SUCCESS;
393
394	/*
395	* Gather the attributes used in the matching process.
396	*/
397	const char *pszDevice = pLun->pDevIns
398	? pLun->pDevIns->Internal.s.pDevR3->pReg->szName
399	: pLun->pUsbIns->Internal.s.pUsbDev->pReg->szName;
400	char szLun[32];
401	RTStrPrintf(szLun, sizeof(szLun), "%u", pLun->iLun);
402	const char *pszAbove = pDrvAbove ? pDrvAbove->Internal.s.pDrv->pReg->szName : "<top>";
403	char *pszThisDrv;
404	int rc = CFGMR3QueryStringAlloc(*ppNode, "Driver", &pszThisDrv);
405	AssertMsgRCReturn(rc, ("Query for string value of \"Driver\" -> %Rrc\n", rc),
406	rc == VERR_CFGM_VALUE_NOT_FOUND ? VERR_PDM_CFG_MISSING_DRIVER_NAME : rc);
407
408	uint64_t uInjectTransformationAbove = 0;
409	if (pDrvAbove)
410	{
411	rc = CFGMR3QueryIntegerDef(CFGMR3GetParent(*ppNode), "InjectTransformationPtr", &uInjectTransformationAbove, 0);
412	AssertLogRelRCReturn(rc, rc);
413	}
414
415
416	/*
417	* Enumerate possible driver chain transformations.
418	*/
419	unsigned cTransformations = 0;
420	for (; pCurTrans != NULL; pCurTrans = CFGMR3GetNextChild(pCurTrans))
421	{
422	char szCurTransNm[256];
423	rc = CFGMR3GetName(pCurTrans, szCurTransNm, sizeof(szCurTransNm));
424	AssertLogRelRCReturn(rc, rc);
425
426	/* Match against the driver multi pattern. */
427	char *pszMultiPat;
428	rc = CFGMR3QueryStringAllocDef(pCurTrans, "Driver", &pszMultiPat, "*");
429	AssertLogRelRCReturn(rc, rc);
430	bool fMatch = RTStrSimplePatternMultiMatch(pszMultiPat, RTSTR_MAX, pszDevice, RTSTR_MAX, NULL);
431	MMR3HeapFree(pszMultiPat);
432	if (!fMatch)
433	continue;
434
435	/* Match against the lun multi pattern. */
436	rc = CFGMR3QueryStringAllocDef(pCurTrans, "LUN", &pszMultiPat, "*");
437	AssertLogRelRCReturn(rc, rc);
438	fMatch = RTStrSimplePatternMultiMatch(pszMultiPat, RTSTR_MAX, szLun, RTSTR_MAX, NULL);
439	MMR3HeapFree(pszMultiPat);
440	if (!fMatch)
441	continue;
442
443	/* Match against the below-driver multi pattern. */
444	rc = CFGMR3QueryStringAllocDef(pCurTrans, "BelowDriver", &pszMultiPat, "*");
445	AssertLogRelRCReturn(rc, rc);
446	fMatch = RTStrSimplePatternMultiMatch(pszMultiPat, RTSTR_MAX, pszAbove, RTSTR_MAX, NULL);
447	MMR3HeapFree(pszMultiPat);
448	if (!fMatch)
449	continue;
450
451	/* Match against the above-driver multi pattern. */
452	rc = CFGMR3QueryStringAlloc(pCurTrans, "AboveDriver", &pszMultiPat);
453	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
454	rc = VINF_SUCCESS;
455	else
456	{
457	AssertLogRelRCReturn(rc, rc);
458	fMatch = RTStrSimplePatternMultiMatch(pszMultiPat, RTSTR_MAX, pszThisDrv, RTSTR_MAX, NULL);
459	MMR3HeapFree(pszMultiPat);
460	if (!fMatch)
461	continue;
462	if (uInjectTransformationAbove == (uintptr_t)pCurTrans)
463	continue;
464	}
465
466	/*
467	* We've got a match! Now, what are we supposed to do?
468	*/
469	char szAction[16];
470	rc = CFGMR3QueryStringDef(pCurTrans, "Action", szAction, sizeof(szAction), "inject");
471	AssertLogRelRCReturn(rc, rc);
472	AssertLogRelMsgReturn( !strcmp(szAction, "inject")
473	\|\| !strcmp(szAction, "mergeconfig")
474	\|\| !strcmp(szAction, "remove")
475	\|\| !strcmp(szAction, "removetree")
476	\|\| !strcmp(szAction, "replace")
477	\|\| !strcmp(szAction, "replacetree")
478	,
479	("Action='%s', valid values are 'inject', 'mergeconfig', 'replace', 'replacetree', 'remove', 'removetree'.\n", szAction),
480	VERR_PDM_MISCONFIGURED_DRV_TRANSFORMATION);
481	LogRel(("Applying '%s' to '%s'::[%s]...'%s': %s\n", szCurTransNm, pszDevice, szLun, pszThisDrv, szAction));
482	CFGMR3Dump(*ppNode);
483	CFGMR3Dump(pCurTrans);
484
485	/* Get the attached driver to inject. */
486	PCFGMNODE pTransAttDrv = NULL;
487	if (!strcmp(szAction, "inject") \|\| !strcmp(szAction, "replace") \|\| !strcmp(szAction, "replacetree"))
488	{
489	pTransAttDrv = CFGMR3GetChild(pCurTrans, "AttachedDriver");
490	AssertLogRelMsgReturn(pTransAttDrv,
491	("An %s transformation requires an AttachedDriver child node!\n", szAction),
492	VERR_PDM_MISCONFIGURED_DRV_TRANSFORMATION);
493	}
494
495
496	/*
497	* Remove the node.
498	*/
499	if (!strcmp(szAction, "remove") \|\| !strcmp(szAction, "removetree"))
500	{
501	PCFGMNODE pBelowThis = CFGMR3GetChild(*ppNode, "AttachedDriver");
502	if (!pBelowThis \|\| !strcmp(szAction, "removetree"))
503	{
504	CFGMR3RemoveNode(*ppNode);
505	*ppNode = NULL;
506	}
507	else
508	{
509	PCFGMNODE pBelowThisCopy;
510	rc = CFGMR3DuplicateSubTree(pBelowThis, &pBelowThisCopy);
511	AssertLogRelRCReturn(rc, rc);
512
513	rc = CFGMR3ReplaceSubTree(*ppNode, pBelowThisCopy);
514	if (RT_FAILURE(rc))
515	{
516	CFGMR3RemoveNode(pBelowThis);
517	AssertLogRelReturn(("rc=%Rrc\n", rc), rc);
518	}
519	}
520	}
521	/*
522	* Replace the driver about to be instantiated.
523	*/
524	else if (!strcmp(szAction, "replace") \|\| !strcmp(szAction, "replacetree"))
525	{
526	PCFGMNODE pTransCopy;
527	rc = CFGMR3DuplicateSubTree(pTransAttDrv, &pTransCopy);
528	AssertLogRelRCReturn(rc, rc);
529
530	PCFGMNODE pBelowThis = CFGMR3GetChild(*ppNode, "AttachedDriver");
531	if (!pBelowThis \|\| !strcmp(szAction, "replacetree"))
532	rc = VINF_SUCCESS;
533	else
534	{
535	PCFGMNODE pBelowThisCopy;
536	rc = CFGMR3DuplicateSubTree(pBelowThis, &pBelowThisCopy);
537	if (RT_SUCCESS(rc))
538	{
539	rc = CFGMR3InsertSubTree(pTransCopy, "AttachedDriver", pBelowThisCopy, NULL);
540	AssertLogRelRC(rc);
541	if (RT_FAILURE(rc))
542	CFGMR3RemoveNode(pBelowThisCopy);
543	}
544	}
545	if (RT_SUCCESS(rc))
546	rc = CFGMR3ReplaceSubTree(*ppNode, pTransCopy);
547	if (RT_FAILURE(rc))
548	CFGMR3RemoveNode(pTransCopy);
549	}
550	/*
551	* Inject a driver before the driver about to be instantiated.
552	*/
553	else if (!strcmp(szAction, "inject"))
554	{
555	PCFGMNODE pTransCopy;
556	rc = CFGMR3DuplicateSubTree(pTransAttDrv, &pTransCopy);
557	AssertLogRelRCReturn(rc, rc);
558
559	PCFGMNODE pThisCopy;
560	rc = CFGMR3DuplicateSubTree(*ppNode, &pThisCopy);
561	if (RT_SUCCESS(rc))
562	{
563	rc = CFGMR3InsertSubTree(pTransCopy, "AttachedDriver", pThisCopy, NULL);
564	if (RT_SUCCESS(rc))
565	{
566	rc = CFGMR3InsertInteger(pTransCopy, "InjectTransformationPtr", (uintptr_t)pCurTrans);
567	AssertLogRelRC(rc);
568	rc = CFGMR3InsertString(pTransCopy, "InjectTransformationNm", szCurTransNm);
569	AssertLogRelRC(rc);
570	if (RT_SUCCESS(rc))
571	rc = CFGMR3ReplaceSubTree(*ppNode, pTransCopy);
572	}
573	else
574	{
575	AssertLogRelRC(rc);
576	CFGMR3RemoveNode(pThisCopy);
577	}
578	}
579	if (RT_FAILURE(rc))
580	CFGMR3RemoveNode(pTransCopy);
581	}
582	/*
583	* Merge the Config node of the transformation with the one of the
584	* current driver.
585	*/
586	else if (!strcmp(szAction, "mergeconfig"))
587	{
588	PCFGMNODE pTransConfig = CFGMR3GetChild(pCurTrans, "Config");
589	AssertLogRelReturn(pTransConfig, VERR_PDM_MISCONFIGURED_DRV_TRANSFORMATION);
590
591	PCFGMNODE pDrvConfig = CFGMR3GetChild(*ppNode, "Config");
592	if (*ppNode)
593	CFGMR3InsertNode(*ppNode, "Config", &pDrvConfig);
594	AssertLogRelReturn(pDrvConfig, VERR_PDM_CANNOT_TRANSFORM_REMOVED_DRIVER);
595
596	rc = CFGMR3CopyTree(pDrvConfig, pTransConfig, CFGM_COPY_FLAGS_REPLACE_VALUES \| CFGM_COPY_FLAGS_MERGE_KEYS);
597	AssertLogRelRCReturn(rc, rc);
598	}
599	else
600	AssertFailed();
601
602	cTransformations++;
603	if (*ppNode)
604	CFGMR3Dump(*ppNode);
605	else
606	LogRel(("The transformation removed the driver.\n"));
607	}
608
609	/*
610	* Note what happened in the release log.
611	*/
612	if (cTransformations > 0)
613	LogRel(("Transformations done. Applied %u driver transformations.\n", cTransformations));
614
615	return rc;
616	}
617
618
619	/**
620	* Instantiate a driver.
621	*
622	* @returns VBox status code, including informational statuses.
623	*
624	* @param pVM Pointer to the VM.
625	* @param pNode The CFGM node for the driver.
626	* @param pBaseInterface The base interface.
627	* @param pDrvAbove The driver above it. NULL if it's the top-most
628	* driver.
629	* @param pLun The LUN the driver is being attached to. NULL
630	* if we're instantiating a driver chain before
631	* attaching it - untested.
632	* @param ppBaseInterface Where to return the pointer to the base
633	* interface of the newly created driver.
634	*
635	* @remarks Recursive calls to this function is normal as the drivers will
636	* attach to anything below them during the pfnContruct call.
637	*
638	* @todo Need to extend this interface a bit so that the driver
639	* transformation feature can attach drivers to unconfigured LUNs and
640	* at the end of chains.
641	*/
642	int pdmR3DrvInstantiate(PVM pVM, PCFGMNODE pNode, PPDMIBASE pBaseInterface, PPDMDRVINS pDrvAbove,
643	PPDMLUN pLun, PPDMIBASE *ppBaseInterface)
644	{
645	Assert(!pDrvAbove \|\| !pDrvAbove->Internal.s.pDown);
646	Assert(!pDrvAbove \|\| !pDrvAbove->pDownBase);
647
648	Assert(pBaseInterface->pfnQueryInterface(pBaseInterface, PDMIBASE_IID) == pBaseInterface);
649
650	/*
651	* Do driver chain injections
652	*/
653	int rc = pdmR3DrvMaybeTransformChain(pVM, pDrvAbove, pLun, &pNode);
654	if (RT_FAILURE(rc))
655	return rc;
656	if (!pNode)
657	return VERR_PDM_NO_ATTACHED_DRIVER;
658
659	/*
660	* Find the driver.
661	*/
662	char *pszName;
663	rc = CFGMR3QueryStringAlloc(pNode, "Driver", &pszName);
664	if (RT_SUCCESS(rc))
665	{
666	PPDMDRV pDrv = pdmR3DrvLookup(pVM, pszName);
667	if ( pDrv
668	&& pDrv->cInstances < pDrv->pReg->cMaxInstances)
669	{
670	/* config node */
671	PCFGMNODE pConfigNode = CFGMR3GetChild(pNode, "Config");
672	if (!pConfigNode)
673	rc = CFGMR3InsertNode(pNode, "Config", &pConfigNode);
674	if (RT_SUCCESS(rc))
675	{
676	CFGMR3SetRestrictedRoot(pConfigNode);
677
678	/*
679	* Allocate the driver instance.
680	*/
681	size_t cb = RT_OFFSETOF(PDMDRVINS, achInstanceData[pDrv->pReg->cbInstance]);
682	cb = RT_ALIGN_Z(cb, 16);
683	bool const fHyperHeap = !!(pDrv->pReg->fFlags & (PDM_DRVREG_FLAGS_R0 \| PDM_DRVREG_FLAGS_RC));
684	PPDMDRVINS pNew;
685	if (fHyperHeap)
686	rc = MMHyperAlloc(pVM, cb, 64, MM_TAG_PDM_DRIVER, (void **)&pNew);
687	else
688	rc = MMR3HeapAllocZEx(pVM, MM_TAG_PDM_DRIVER, cb, (void **)&pNew);
689	if (pNew)
690	{
691	/*
692	* Initialize the instance structure (declaration order).
693	*/
694	pNew->u32Version = PDM_DRVINS_VERSION;
695	pNew->iInstance = pDrv->iNextInstance;
696	pNew->Internal.s.pUp = pDrvAbove ? pDrvAbove : NULL;
697	//pNew->Internal.s.pDown = NULL;
698	pNew->Internal.s.pLun = pLun;
699	pNew->Internal.s.pDrv = pDrv;
700	pNew->Internal.s.pVMR3 = pVM;
701	pNew->Internal.s.pVMR0 = pDrv->pReg->fFlags & PDM_DRVREG_FLAGS_R0 ? pVM->pVMR0 : NIL_RTR0PTR;
702	pNew->Internal.s.pVMRC = pDrv->pReg->fFlags & PDM_DRVREG_FLAGS_RC ? pVM->pVMRC : NIL_RTRCPTR;
703	//pNew->Internal.s.fDetaching = false;
704	pNew->Internal.s.fVMSuspended = true;
705	//pNew->Internal.s.fVMReset = false;
706	pNew->Internal.s.fHyperHeap = fHyperHeap;
707	//pNew->Internal.s.pfnAsyncNotify = NULL;
708	pNew->Internal.s.pCfgHandle = pNode;
709	pNew->pReg = pDrv->pReg;
710	pNew->pCfg = pConfigNode;
711	pNew->pUpBase = pBaseInterface;
712	Assert(!pDrvAbove \|\| pBaseInterface == &pDrvAbove->IBase);
713	//pNew->pDownBase = NULL;
714	//pNew->IBase.pfnQueryInterface = NULL;
715	//pNew->fTracing = 0;
716	pNew->idTracing = ++pVM->pdm.s.idTracingOther;
717	pNew->pHlpR3 = &g_pdmR3DrvHlp;
718	pNew->pvInstanceDataR3 = &pNew->achInstanceData[0];
719	if (pDrv->pReg->fFlags & PDM_DRVREG_FLAGS_R0)
720	{
721	pNew->pvInstanceDataR0 = MMHyperR3ToR0(pVM, &pNew->achInstanceData[0]);
722	rc = PDMR3LdrGetSymbolR0(pVM, NULL, "g_pdmR0DrvHlp", &pNew->pHlpR0);
723	AssertReleaseRCReturn(rc, rc);
724
725	}
726	if (pDrv->pReg->fFlags & PDM_DRVREG_FLAGS_RC)
727	{
728	pNew->pvInstanceDataR0 = MMHyperR3ToRC(pVM, &pNew->achInstanceData[0]);
729	rc = PDMR3LdrGetSymbolRC(pVM, NULL, "g_pdmRCDrvHlp", &pNew->pHlpRC);
730	AssertReleaseRCReturn(rc, rc);
731	}
732
733	pDrv->iNextInstance++;
734	pDrv->cInstances++;
735
736	/*
737	* Link with it with the driver above / LUN.
738	*/
739	if (pDrvAbove)
740	{
741	pDrvAbove->pDownBase = &pNew->IBase;
742	pDrvAbove->Internal.s.pDown = pNew;
743	}
744	else if (pLun)
745	pLun->pTop = pNew;
746	if (pLun)
747	pLun->pBottom = pNew;
748
749	/*
750	* Invoke the constructor.
751	*/
752	rc = pDrv->pReg->pfnConstruct(pNew, pNew->pCfg, 0 /fFlags/);
753	if (RT_SUCCESS(rc))
754	{
755	AssertPtr(pNew->IBase.pfnQueryInterface);
756	Assert(pNew->IBase.pfnQueryInterface(&pNew->IBase, PDMIBASE_IID) == &pNew->IBase);
757
758	/* Success! */
759	*ppBaseInterface = &pNew->IBase;
760	if (pLun)
761	Log(("PDM: Attached driver %p:'%s'/%d to LUN#%d on device '%s'/%d, pDrvAbove=%p:'%s'/%d\n",
762	pNew, pDrv->pReg->szName, pNew->iInstance,
763	pLun->iLun,
764	pLun->pDevIns ? pLun->pDevIns->pReg->szName : pLun->pUsbIns->pReg->szName,
765	pLun->pDevIns ? pLun->pDevIns->iInstance : pLun->pUsbIns->iInstance,
766	pDrvAbove, pDrvAbove ? pDrvAbove->pReg->szName : "", pDrvAbove ? pDrvAbove->iInstance : UINT32_MAX));
767	else
768	Log(("PDM: Attached driver %p:'%s'/%d, pDrvAbove=%p:'%s'/%d\n",
769	pNew, pDrv->pReg->szName, pNew->iInstance,
770	pDrvAbove, pDrvAbove ? pDrvAbove->pReg->szName : "", pDrvAbove ? pDrvAbove->iInstance : UINT32_MAX));
771	}
772	else
773	{
774	pdmR3DrvDestroyChain(pNew, PDM_TACH_FLAGS_NO_CALLBACKS);
775	if (rc == VERR_VERSION_MISMATCH)
776	rc = VERR_PDM_DRIVER_VERSION_MISMATCH;
777	}
778	}
779	else
780	{
781	AssertMsgFailed(("Failed to allocate %d bytes for instantiating driver '%s'\n", cb, pszName));
782	rc = VERR_NO_MEMORY;
783	}
784	}
785	else
786	AssertMsgFailed(("Failed to create Config node! rc=%Rrc\n", rc));
787	}
788	else if (pDrv)
789	{
790	AssertMsgFailed(("Too many instances of driver '%s', max is %u\n", pszName, pDrv->pReg->cMaxInstances));
791	rc = VERR_PDM_TOO_MANY_DRIVER_INSTANCES;
792	}
793	else
794	{
795	AssertMsgFailed(("Driver '%s' wasn't found!\n", pszName));
796	rc = VERR_PDM_DRIVER_NOT_FOUND;
797	}
798	MMR3HeapFree(pszName);
799	}
800	else
801	{
802	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
803	rc = VERR_PDM_CFG_MISSING_DRIVER_NAME;
804	else
805	AssertMsgFailed(("Query for string value of \"Driver\" -> %Rrc\n", rc));
806	}
807	return rc;
808	}
809
810
811	/**
812	* Detaches a driver from whatever it's attached to.
813	* This will of course lead to the destruction of the driver and all drivers below it in the chain.
814	*
815	* @returns VINF_SUCCESS
816	* @param pDrvIns The driver instance to detach.
817	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
818	*/
819	int pdmR3DrvDetach(PPDMDRVINS pDrvIns, uint32_t fFlags)
820	{
821	PDMDRV_ASSERT_DRVINS(pDrvIns);
822	LogFlow(("pdmR3DrvDetach: pDrvIns=%p '%s'/%d\n", pDrvIns, pDrvIns->pReg->szName, pDrvIns->iInstance));
823	VM_ASSERT_EMT(pDrvIns->Internal.s.pVMR3);
824
825	/*
826	* Check that we're not doing this recursively, that could have unwanted sideeffects!
827	*/
828	if (pDrvIns->Internal.s.fDetaching)
829	{
830	AssertMsgFailed(("Recursive detach! '%s'/%d\n", pDrvIns->pReg->szName, pDrvIns->iInstance));
831	return VINF_SUCCESS; }
832
833	/*
834	* Check that we actually can detach this instance.
835	* The requirement is that the driver/device above has a detach method.
836	*/
837	if ( pDrvIns->Internal.s.pUp
838	? !pDrvIns->Internal.s.pUp->pReg->pfnDetach
839	: pDrvIns->Internal.s.pLun->pDevIns
840	? !pDrvIns->Internal.s.pLun->pDevIns->pReg->pfnDetach
841	: !pDrvIns->Internal.s.pLun->pUsbIns->pReg->pfnDriverDetach
842	)
843	{
844	AssertMsgFailed(("Cannot detach driver instance because the driver/device above doesn't support it!\n"));
845	return VERR_PDM_DRIVER_DETACH_NOT_POSSIBLE;
846	}
847
848	/*
849	* Join paths with pdmR3DrvDestroyChain.
850	*/
851	pdmR3DrvDestroyChain(pDrvIns, fFlags);
852	return VINF_SUCCESS;
853	}
854
855
856	/**
857	* Destroys a driver chain starting with the specified driver.
858	*
859	* This is used when unplugging a device at run time.
860	*
861	* @param pDrvIns Pointer to the driver instance to start with.
862	* @param fFlags PDM_TACH_FLAGS_NOT_HOT_PLUG, PDM_TACH_FLAGS_NO_CALLBACKS
863	* or 0.
864	*/
865	void pdmR3DrvDestroyChain(PPDMDRVINS pDrvIns, uint32_t fFlags)
866	{
867	PVM pVM = pDrvIns->Internal.s.pVMR3;
868	VM_ASSERT_EMT(pVM);
869
870	/*
871	* Detach the bottommost driver until we've detached pDrvIns.
872	*/
873	pDrvIns->Internal.s.fDetaching = true;
874	PPDMDRVINS pCur;
875	do
876	{
877	/* find the driver to detach. */
878	pCur = pDrvIns;
879	while (pCur->Internal.s.pDown)
880	pCur = pCur->Internal.s.pDown;
881	LogFlow(("pdmR3DrvDestroyChain: pCur=%p '%s'/%d\n", pCur, pCur->pReg->szName, pCur->iInstance));
882
883	/*
884	* Unlink it and notify parent.
885	*/
886	pCur->Internal.s.fDetaching = true;
887
888	PPDMLUN pLun = pCur->Internal.s.pLun;
889	Assert(pLun->pBottom == pCur);
890	pLun->pBottom = pCur->Internal.s.pUp;
891
892	if (pCur->Internal.s.pUp)
893	{
894	/* driver parent */
895	PPDMDRVINS pParent = pCur->Internal.s.pUp;
896	pCur->Internal.s.pUp = NULL;
897	pParent->Internal.s.pDown = NULL;
898
899	if (!(fFlags & PDM_TACH_FLAGS_NO_CALLBACKS) && pParent->pReg->pfnDetach)
900	pParent->pReg->pfnDetach(pParent, fFlags);
901
902	pParent->pDownBase = NULL;
903	}
904	else
905	{
906	/* device parent */
907	Assert(pLun->pTop == pCur);
908	pLun->pTop = NULL;
909	if (!(fFlags & PDM_TACH_FLAGS_NO_CALLBACKS))
910	{
911	if (pLun->pDevIns)
912	{
913	if (pLun->pDevIns->pReg->pfnDetach)
914	{
915	PDMCritSectEnter(pLun->pDevIns->pCritSectRoR3, VERR_IGNORED);
916	pLun->pDevIns->pReg->pfnDetach(pLun->pDevIns, pLun->iLun, fFlags);
917	PDMCritSectLeave(pLun->pDevIns->pCritSectRoR3);
918	}
919	}
920	else
921	{
922	if (pLun->pUsbIns->pReg->pfnDriverDetach)
923	{
924	/** @todo USB device locking? */
925	/** @todo add flags to pfnDriverDetach. */
926	pLun->pUsbIns->pReg->pfnDriverDetach(pLun->pUsbIns, pLun->iLun);
927	}
928	}
929	}
930	}
931
932	/*
933	* Call destructor.
934	*/
935	pCur->pUpBase = NULL;
936	if (pCur->pReg->pfnDestruct)
937	pCur->pReg->pfnDestruct(pCur);
938	pCur->Internal.s.pDrv->cInstances--;
939
940	/*
941	* Free all resources allocated by the driver.
942	*/
943	/* Queues. */
944	int rc = PDMR3QueueDestroyDriver(pVM, pCur);
945	AssertRC(rc);
946
947	/* Timers. */
948	rc = TMR3TimerDestroyDriver(pVM, pCur);
949	AssertRC(rc);
950
951	/* SSM data units. */
952	rc = SSMR3DeregisterDriver(pVM, pCur, NULL, 0);
953	AssertRC(rc);
954
955	/* PDM threads. */
956	rc = pdmR3ThreadDestroyDriver(pVM, pCur);
957	AssertRC(rc);
958
959	/* Info handlers. */
960	rc = DBGFR3InfoDeregisterDriver(pVM, pCur, NULL);
961	AssertRC(rc);
962
963	/* PDM critsects. */
964	rc = pdmR3CritSectBothDeleteDriver(pVM, pCur);
965	AssertRC(rc);
966
967	/* Block caches. */
968	PDMR3BlkCacheReleaseDriver(pVM, pCur);
969
970	#ifdef VBOX_WITH_PDM_ASYNC_COMPLETION
971	/* Completion templates.*/
972	pdmR3AsyncCompletionTemplateDestroyDriver(pVM, pCur);
973	#endif
974
975	/* Finally, the driver it self. */
976	bool fHyperHeap = pCur->Internal.s.fHyperHeap;
977	ASMMemFill32(pCur, RT_OFFSETOF(PDMDRVINS, achInstanceData[pCur->pReg->cbInstance]), 0xdeadd0d0);
978	if (fHyperHeap)
979	MMHyperFree(pVM, pCur);
980	else
981	MMR3HeapFree(pCur);
982
983	} while (pCur != pDrvIns);
984	}
985
986
987
988
989	/** @name Driver Helpers
990	* @{
991	*/
992
993	/** @interface_method_impl{PDMDRVHLP,pfnAttach} */
994	static DECLCALLBACK(int) pdmR3DrvHlp_Attach(PPDMDRVINS pDrvIns, uint32_t fFlags, PPDMIBASE *ppBaseInterface)
995	{
996	PDMDRV_ASSERT_DRVINS(pDrvIns);
997	PVM pVM = pDrvIns->Internal.s.pVMR3;
998	VM_ASSERT_EMT(pVM);
999	LogFlow(("pdmR3DrvHlp_Attach: caller='%s'/%d: fFlags=%#x\n", pDrvIns->pReg->szName, pDrvIns->iInstance, fFlags));
1000	Assert(!(fFlags & ~(PDM_TACH_FLAGS_NOT_HOT_PLUG)));
1001
1002	/*
1003	* Check that there isn't anything attached already.
1004	*/
1005	int rc;
1006	if (!pDrvIns->Internal.s.pDown)
1007	{
1008	Assert(pDrvIns->Internal.s.pLun->pBottom == pDrvIns);
1009
1010	/*
1011	* Get the attached driver configuration.
1012	*/
1013	PCFGMNODE pNode = CFGMR3GetChild(pDrvIns->Internal.s.pCfgHandle, "AttachedDriver");
1014	if (pNode)
1015	rc = pdmR3DrvInstantiate(pVM, pNode, &pDrvIns->IBase, pDrvIns, pDrvIns->Internal.s.pLun, ppBaseInterface);
1016	else
1017	rc = VERR_PDM_NO_ATTACHED_DRIVER;
1018	}
1019	else
1020	{
1021	AssertMsgFailed(("Already got a driver attached. The driver should keep track of such things!\n"));
1022	rc = VERR_PDM_DRIVER_ALREADY_ATTACHED;
1023	}
1024
1025	LogFlow(("pdmR3DrvHlp_Attach: caller='%s'/%d: return %Rrc\n",
1026	pDrvIns->pReg->szName, pDrvIns->iInstance, rc));
1027	return rc;
1028	}
1029
1030
1031	/** @interface_method_impl{PDMDRVHLP,pfnDetach} */
1032	static DECLCALLBACK(int) pdmR3DrvHlp_Detach(PPDMDRVINS pDrvIns, uint32_t fFlags)
1033	{
1034	PDMDRV_ASSERT_DRVINS(pDrvIns);
1035	LogFlow(("pdmR3DrvHlp_Detach: caller='%s'/%d: fFlags=%#x\n",
1036	pDrvIns->pReg->szName, pDrvIns->iInstance, fFlags));
1037	VM_ASSERT_EMT(pDrvIns->Internal.s.pVMR3);
1038
1039	/*
1040	* Anything attached?
1041	*/
1042	int rc;
1043	if (pDrvIns->Internal.s.pDown)
1044	rc = pdmR3DrvDetach(pDrvIns->Internal.s.pDown, fFlags);
1045	else
1046	{
1047	AssertMsgFailed(("Nothing attached!\n"));
1048	rc = VERR_PDM_NO_DRIVER_ATTACHED;
1049	}
1050
1051	LogFlow(("pdmR3DrvHlp_Detach: caller='%s'/%d: returns %Rrc\n",
1052	pDrvIns->pReg->szName, pDrvIns->iInstance, rc));
1053	return rc;
1054	}
1055
1056
1057	/** @interface_method_impl{PDMDRVHLP,pfnDetachSelf} */
1058	static DECLCALLBACK(int) pdmR3DrvHlp_DetachSelf(PPDMDRVINS pDrvIns, uint32_t fFlags)
1059	{
1060	PDMDRV_ASSERT_DRVINS(pDrvIns);
1061	LogFlow(("pdmR3DrvHlp_DetachSelf: caller='%s'/%d: fFlags=%#x\n",
1062	pDrvIns->pReg->szName, pDrvIns->iInstance, fFlags));
1063	VM_ASSERT_EMT(pDrvIns->Internal.s.pVMR3);
1064
1065	int rc = pdmR3DrvDetach(pDrvIns, fFlags);
1066
1067	LogFlow(("pdmR3DrvHlp_Detach: returns %Rrc\n", rc)); /* pDrvIns is freed by now. */
1068	return rc;
1069	}
1070
1071
1072	/** @interface_method_impl{PDMDRVHLP,pfnMountPrepare} */
1073	static DECLCALLBACK(int) pdmR3DrvHlp_MountPrepare(PPDMDRVINS pDrvIns, const char pszFilename, const char pszCoreDriver)
1074	{
1075	PDMDRV_ASSERT_DRVINS(pDrvIns);
1076	LogFlow(("pdmR3DrvHlp_MountPrepare: caller='%s'/%d: pszFilename=%p:{%s} pszCoreDriver=%p:{%s}\n",
1077	pDrvIns->pReg->szName, pDrvIns->iInstance, pszFilename, pszFilename, pszCoreDriver, pszCoreDriver));
1078	VM_ASSERT_EMT(pDrvIns->Internal.s.pVMR3);
1079
1080	/*
1081	* Do the caller have anything attached below itself?
1082	*/
1083	if (pDrvIns->Internal.s.pDown)
1084	{
1085	AssertMsgFailed(("Cannot prepare a mount when something's attached to you!\n"));
1086	return VERR_PDM_DRIVER_ALREADY_ATTACHED;
1087	}
1088
1089	/*
1090	* We're asked to prepare, so we'll start off by nuking the
1091	* attached configuration tree.
1092	*/
1093	PCFGMNODE pNode = CFGMR3GetChild(pDrvIns->Internal.s.pCfgHandle, "AttachedDriver");
1094	if (pNode)
1095	CFGMR3RemoveNode(pNode);
1096
1097	/*
1098	* If there is no core driver, we'll have to probe for it.
1099	*/
1100	if (!pszCoreDriver)
1101	{
1102	/** @todo implement image probing. */
1103	AssertReleaseMsgFailed(("Not implemented!\n"));
1104	return VERR_NOT_IMPLEMENTED;
1105	}
1106
1107	/*
1108	* Construct the basic attached driver configuration.
1109	*/
1110	int rc = CFGMR3InsertNode(pDrvIns->Internal.s.pCfgHandle, "AttachedDriver", &pNode);
1111	if (RT_SUCCESS(rc))
1112	{
1113	rc = CFGMR3InsertString(pNode, "Driver", pszCoreDriver);
1114	if (RT_SUCCESS(rc))
1115	{
1116	PCFGMNODE pCfg;
1117	rc = CFGMR3InsertNode(pNode, "Config", &pCfg);
1118	if (RT_SUCCESS(rc))
1119	{
1120	rc = CFGMR3InsertString(pCfg, "Path", pszFilename);
1121	if (RT_SUCCESS(rc))
1122	{
1123	LogFlow(("pdmR3DrvHlp_MountPrepare: caller='%s'/%d: returns %Rrc (Driver=%s)\n",
1124	pDrvIns->pReg->szName, pDrvIns->iInstance, rc, pszCoreDriver));
1125	return rc;
1126	}
1127	else
1128	AssertMsgFailed(("Path string insert failed, rc=%Rrc\n", rc));
1129	}
1130	else
1131	AssertMsgFailed(("Config node failed, rc=%Rrc\n", rc));
1132	}
1133	else
1134	AssertMsgFailed(("Driver string insert failed, rc=%Rrc\n", rc));
1135	CFGMR3RemoveNode(pNode);
1136	}
1137	else
1138	AssertMsgFailed(("AttachedDriver node insert failed, rc=%Rrc\n", rc));
1139
1140	LogFlow(("pdmR3DrvHlp_MountPrepare: caller='%s'/%d: returns %Rrc\n",
1141	pDrvIns->pReg->szName, pDrvIns->iInstance, rc));
1142	return rc;
1143	}
1144
1145
1146	/** @interface_method_impl{PDMDRVHLP,pfnAssertEMT} */
1147	static DECLCALLBACK(bool) pdmR3DrvHlp_AssertEMT(PPDMDRVINS pDrvIns, const char pszFile, unsigned iLine, const char pszFunction)
1148	{
1149	PDMDRV_ASSERT_DRVINS(pDrvIns);
1150	if (VM_IS_EMT(pDrvIns->Internal.s.pVMR3))
1151	return true;
1152
1153	char szMsg[100];
1154	RTStrPrintf(szMsg, sizeof(szMsg), "AssertEMT '%s'/%d\n", pDrvIns->pReg->szName, pDrvIns->iInstance);
1155	RTAssertMsg1Weak(szMsg, iLine, pszFile, pszFunction);
1156	AssertBreakpoint();
1157	VM_ASSERT_EMT(pDrvIns->Internal.s.pVMR3);
1158	return false;
1159	}
1160
1161
1162	/** @interface_method_impl{PDMDRVHLP,pfnAssertOther} */
1163	static DECLCALLBACK(bool) pdmR3DrvHlp_AssertOther(PPDMDRVINS pDrvIns, const char pszFile, unsigned iLine, const char pszFunction)
1164	{
1165	PDMDRV_ASSERT_DRVINS(pDrvIns);
1166	if (!VM_IS_EMT(pDrvIns->Internal.s.pVMR3))
1167	return true;
1168
1169	char szMsg[100];
1170	RTStrPrintf(szMsg, sizeof(szMsg), "AssertOther '%s'/%d\n", pDrvIns->pReg->szName, pDrvIns->iInstance);
1171	RTAssertMsg1Weak(szMsg, iLine, pszFile, pszFunction);
1172	AssertBreakpoint();
1173	VM_ASSERT_EMT(pDrvIns->Internal.s.pVMR3);
1174	return false;
1175	}
1176
1177
1178	/** @interface_method_impl{PDMDRVHLP,pfnVMSetError} */
1179	static DECLCALLBACK(int) pdmR3DrvHlp_VMSetError(PPDMDRVINS pDrvIns, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
1180	{
1181	PDMDRV_ASSERT_DRVINS(pDrvIns);
1182	va_list args;
1183	va_start(args, pszFormat);
1184	int rc2 = VMSetErrorV(pDrvIns->Internal.s.pVMR3, rc, RT_SRC_POS_ARGS, pszFormat, args); Assert(rc2 == rc); NOREF(rc2);
1185	va_end(args);
1186	return rc;
1187	}
1188
1189
1190	/** @interface_method_impl{PDMDRVHLP,pfnVMSetErrorV} */
1191	static DECLCALLBACK(int) pdmR3DrvHlp_VMSetErrorV(PPDMDRVINS pDrvIns, int rc, RT_SRC_POS_DECL, const char *pszFormat, va_list va)
1192	{
1193	PDMDRV_ASSERT_DRVINS(pDrvIns);
1194	int rc2 = VMSetErrorV(pDrvIns->Internal.s.pVMR3, rc, RT_SRC_POS_ARGS, pszFormat, va); Assert(rc2 == rc); NOREF(rc2);
1195	return rc;
1196	}
1197
1198
1199	/** @interface_method_impl{PDMDRVHLP,pfnVMSetRuntimeError} */
1200	static DECLCALLBACK(int) pdmR3DrvHlp_VMSetRuntimeError(PPDMDRVINS pDrvIns, uint32_t fFlags, const char pszErrorId, const char pszFormat, ...)
1201	{
1202	PDMDRV_ASSERT_DRVINS(pDrvIns);
1203	va_list args;
1204	va_start(args, pszFormat);
1205	int rc = VMSetRuntimeErrorV(pDrvIns->Internal.s.pVMR3, fFlags, pszErrorId, pszFormat, args);
1206	va_end(args);
1207	return rc;
1208	}
1209
1210
1211	/** @interface_method_impl{PDMDRVHLP,pfnVMSetRuntimeErrorV} */
1212	static DECLCALLBACK(int) pdmR3DrvHlp_VMSetRuntimeErrorV(PPDMDRVINS pDrvIns, uint32_t fFlags, const char pszErrorId, const char pszFormat, va_list va)
1213	{
1214	PDMDRV_ASSERT_DRVINS(pDrvIns);
1215	int rc = VMSetRuntimeErrorV(pDrvIns->Internal.s.pVMR3, fFlags, pszErrorId, pszFormat, va);
1216	return rc;
1217	}
1218
1219
1220	/** @interface_method_impl{PDMDEVHLPR3,pfnVMState} */
1221	static DECLCALLBACK(VMSTATE) pdmR3DrvHlp_VMState(PPDMDRVINS pDrvIns)
1222	{
1223	PDMDRV_ASSERT_DRVINS(pDrvIns);
1224
1225	VMSTATE enmVMState = VMR3GetState(pDrvIns->Internal.s.pVMR3);
1226
1227	LogFlow(("pdmR3DrvHlp_VMState: caller='%s'/%d: returns %d (%s)\n", pDrvIns->pReg->szName, pDrvIns->iInstance,
1228	enmVMState, VMR3GetStateName(enmVMState)));
1229	return enmVMState;
1230	}
1231
1232
1233	/** @interface_method_impl{PDMDEVHLPR3,pfnVMTeleportedAndNotFullyResumedYet} */
1234	static DECLCALLBACK(bool) pdmR3DrvHlp_VMTeleportedAndNotFullyResumedYet(PPDMDRVINS pDrvIns)
1235	{
1236	PDMDRV_ASSERT_DRVINS(pDrvIns);
1237
1238	bool fRc = VMR3TeleportedAndNotFullyResumedYet(pDrvIns->Internal.s.pVMR3);
1239
1240	LogFlow(("pdmR3DrvHlp_VMState: caller='%s'/%d: returns %RTbool)\n", pDrvIns->pReg->szName, pDrvIns->iInstance,
1241	fRc));
1242	return fRc;
1243	}
1244
1245
1246	/** @interface_method_impl{PDMDEVHLPR3,pfnGetSupDrvSession} */
1247	static DECLCALLBACK(PSUPDRVSESSION) pdmR3DrvHlp_GetSupDrvSession(PPDMDRVINS pDrvIns)
1248	{
1249	PDMDRV_ASSERT_DRVINS(pDrvIns);
1250
1251	PSUPDRVSESSION pSession = pDrvIns->Internal.s.pVMR3->pSession;
1252	LogFlow(("pdmR3DrvHlp_GetSupDrvSession: caller='%s'/%d: returns %p)\n", pDrvIns->pReg->szName, pDrvIns->iInstance,
1253	pSession));
1254	return pSession;
1255	}
1256
1257
1258	/** @interface_method_impl{PDMDRVHLP,pfnQueueCreate} */
1259	static DECLCALLBACK(int) pdmR3DrvHlp_QueueCreate(PPDMDRVINS pDrvIns, uint32_t cbItem, uint32_t cItems, uint32_t cMilliesInterval,
1260	PFNPDMQUEUEDRV pfnCallback, const char pszName, PPDMQUEUE ppQueue)
1261	{
1262	PDMDRV_ASSERT_DRVINS(pDrvIns);
1263	LogFlow(("pdmR3DrvHlp_PDMQueueCreate: caller='%s'/%d: cbItem=%d cItems=%d cMilliesInterval=%d pfnCallback=%p pszName=%p:{%s} ppQueue=%p\n",
1264	pDrvIns->pReg->szName, pDrvIns->iInstance, cbItem, cItems, cMilliesInterval, pfnCallback, pszName, pszName, ppQueue, ppQueue));
1265	PVM pVM = pDrvIns->Internal.s.pVMR3;
1266	VM_ASSERT_EMT(pVM);
1267
1268	if (pDrvIns->iInstance > 0)
1269	{
1270	pszName = MMR3HeapAPrintf(pVM, MM_TAG_PDM_DRIVER_DESC, "%s_%u", pszName, pDrvIns->iInstance);
1271	AssertLogRelReturn(pszName, VERR_NO_MEMORY);
1272	}
1273
1274	int rc = PDMR3QueueCreateDriver(pVM, pDrvIns, cbItem, cItems, cMilliesInterval, pfnCallback, pszName, ppQueue);
1275
1276	LogFlow(("pdmR3DrvHlp_PDMQueueCreate: caller='%s'/%d: returns %Rrc ppQueue=%p\n", pDrvIns->pReg->szName, pDrvIns->iInstance, rc, ppQueue));
1277	return rc;
1278	}
1279
1280
1281	/** @interface_method_impl{PDMDRVHLP,pfnTMGetVirtualFreq} */
1282	static DECLCALLBACK(uint64_t) pdmR3DrvHlp_TMGetVirtualFreq(PPDMDRVINS pDrvIns)
1283	{
1284	PDMDRV_ASSERT_DRVINS(pDrvIns);
1285
1286	return TMVirtualGetFreq(pDrvIns->Internal.s.pVMR3);
1287	}
1288
1289
1290	/** @interface_method_impl{PDMDRVHLP,pfnTMGetVirtualTime} */
1291	static DECLCALLBACK(uint64_t) pdmR3DrvHlp_TMGetVirtualTime(PPDMDRVINS pDrvIns)
1292	{
1293	PDMDRV_ASSERT_DRVINS(pDrvIns);
1294
1295	return TMVirtualGet(pDrvIns->Internal.s.pVMR3);
1296	}
1297
1298
1299	/** @interface_method_impl{PDMDRVHLP,pfnTMTimerCreate} */
1300	static DECLCALLBACK(int) pdmR3DrvHlp_TMTimerCreate(PPDMDRVINS pDrvIns, TMCLOCK enmClock, PFNTMTIMERDRV pfnCallback, void pvUser, uint32_t fFlags, const char pszDesc, PPTMTIMERR3 ppTimer)
1301	{
1302	PDMDRV_ASSERT_DRVINS(pDrvIns);
1303	LogFlow(("pdmR3DrvHlp_TMTimerCreate: caller='%s'/%d: enmClock=%d pfnCallback=%p pvUser=%p fFlags=%#x pszDesc=%p:{%s} ppTimer=%p\n",
1304	pDrvIns->pReg->szName, pDrvIns->iInstance, enmClock, pfnCallback, pvUser, fFlags, pszDesc, pszDesc, ppTimer));
1305
1306	int rc = TMR3TimerCreateDriver(pDrvIns->Internal.s.pVMR3, pDrvIns, enmClock, pfnCallback, pvUser, fFlags, pszDesc, ppTimer);
1307
1308	LogFlow(("pdmR3DrvHlp_TMTimerCreate: caller='%s'/%d: returns %Rrc ppTimer=%p\n", pDrvIns->pReg->szName, pDrvIns->iInstance, rc, ppTimer));
1309	return rc;
1310	}
1311
1312
1313
1314	/** @interface_method_impl{PDMDRVHLP,pfnSSMRegister} */
1315	static DECLCALLBACK(int) pdmR3DrvHlp_SSMRegister(PPDMDRVINS pDrvIns, uint32_t uVersion, size_t cbGuess,
1316	PFNSSMDRVLIVEPREP pfnLivePrep, PFNSSMDRVLIVEEXEC pfnLiveExec, PFNSSMDRVLIVEVOTE pfnLiveVote,
1317	PFNSSMDRVSAVEPREP pfnSavePrep, PFNSSMDRVSAVEEXEC pfnSaveExec, PFNSSMDRVSAVEDONE pfnSaveDone,
1318	PFNSSMDRVLOADPREP pfnLoadPrep, PFNSSMDRVLOADEXEC pfnLoadExec, PFNSSMDRVLOADDONE pfnLoadDone)
1319	{
1320	PDMDRV_ASSERT_DRVINS(pDrvIns);
1321	VM_ASSERT_EMT(pDrvIns->Internal.s.pVMR3);
1322	LogFlow(("pdmR3DrvHlp_SSMRegister: caller='%s'/%d: uVersion=#x cbGuess=%#x \n"
1323	" pfnLivePrep=%p pfnLiveExec=%p pfnLiveVote=%p pfnSavePrep=%p pfnSaveExec=%p pfnSaveDone=%p pszLoadPrep=%p pfnLoadExec=%p pfnLoaddone=%p\n",
1324	pDrvIns->pReg->szName, pDrvIns->iInstance, uVersion, cbGuess,
1325	pfnLivePrep, pfnLiveExec, pfnLiveVote,
1326	pfnSavePrep, pfnSaveExec, pfnSaveDone, pfnLoadPrep, pfnLoadExec, pfnLoadDone));
1327
1328	int rc = SSMR3RegisterDriver(pDrvIns->Internal.s.pVMR3, pDrvIns, pDrvIns->pReg->szName, pDrvIns->iInstance,
1329	uVersion, cbGuess,
1330	pfnLivePrep, pfnLiveExec, pfnLiveVote,
1331	pfnSavePrep, pfnSaveExec, pfnSaveDone,
1332	pfnLoadPrep, pfnLoadExec, pfnLoadDone);
1333
1334	LogFlow(("pdmR3DrvHlp_SSMRegister: caller='%s'/%d: returns %Rrc\n", pDrvIns->pReg->szName, pDrvIns->iInstance, rc));
1335	return rc;
1336	}
1337
1338
1339	/** @interface_method_impl{PDMDRVHLP,pfnSSMDeregister} */
1340	static DECLCALLBACK(int) pdmR3DrvHlp_SSMDeregister(PPDMDRVINS pDrvIns, const char *pszName, uint32_t u32Instance)
1341	{
1342	PDMDRV_ASSERT_DRVINS(pDrvIns);
1343	VM_ASSERT_EMT(pDrvIns->Internal.s.pVMR3);
1344	LogFlow(("pdmR3DrvHlp_SSMDeregister: caller='%s'/%d: pszName=%p:{%s} u32Instance=%#x\n",
1345	pDrvIns->pReg->szName, pDrvIns->iInstance, pszName, pszName, u32Instance));
1346
1347	int rc = SSMR3DeregisterDriver(pDrvIns->Internal.s.pVMR3, pDrvIns, pszName, u32Instance);
1348
1349	LogFlow(("pdmR3DrvHlp_SSMDeregister: caller='%s'/%d: returns %Rrc\n", pDrvIns->pReg->szName, pDrvIns->iInstance, rc));
1350	return rc;
1351	}
1352
1353
1354	/** @interface_method_impl{PDMDEVHLP,pfnDBGFInfoRegister} */
1355	static DECLCALLBACK(int) pdmR3DrvHlp_DBGFInfoRegister(PPDMDRVINS pDrvIns, const char pszName, const char pszDesc, PFNDBGFHANDLERDRV pfnHandler)
1356	{
1357	PDMDRV_ASSERT_DRVINS(pDrvIns);
1358	LogFlow(("pdmR3DrvHlp_DBGFInfoRegister: caller='%s'/%d: pszName=%p:{%s} pszDesc=%p:{%s} pfnHandler=%p\n",
1359	pDrvIns->pReg->szName, pDrvIns->iInstance, pszName, pszName, pszDesc, pszDesc, pfnHandler));
1360
1361	int rc = DBGFR3InfoRegisterDriver(pDrvIns->Internal.s.pVMR3, pszName, pszDesc, pfnHandler, pDrvIns);
1362
1363	LogFlow(("pdmR3DrvHlp_DBGFInfoRegister: caller='%s'/%d: returns %Rrc\n", pDrvIns->pReg->szName, pDrvIns->iInstance, rc));
1364	return rc;
1365	}
1366
1367
1368	/** @interface_method_impl{PDMDEVHLP,pfnDBGFInfoDeregister} */
1369	static DECLCALLBACK(int) pdmR3DrvHlp_DBGFInfoDeregister(PPDMDRVINS pDrvIns, const char *pszName)
1370	{
1371	PDMDRV_ASSERT_DRVINS(pDrvIns);
1372	LogFlow(("pdmR3DrvHlp_DBGFInfoDeregister: caller='%s'/%d: pszName=%p:{%s} pszDesc=%p:{%s} pfnHandler=%p\n",
1373	pDrvIns->pReg->szName, pDrvIns->iInstance, pszName));
1374
1375	int rc = DBGFR3InfoDeregisterDriver(pDrvIns->Internal.s.pVMR3, pDrvIns, pszName);
1376
1377	LogFlow(("pdmR3DrvHlp_DBGFInfoDeregister: caller='%s'/%d: returns %Rrc\n", pDrvIns->pReg->szName, pDrvIns->iInstance, rc));
1378
1379	return rc;
1380	}
1381
1382
1383	/** @interface_method_impl{PDMDRVHLP,pfnSTAMRegister} */
1384	static DECLCALLBACK(void) pdmR3DrvHlp_STAMRegister(PPDMDRVINS pDrvIns, void pvSample, STAMTYPE enmType, const char pszName, STAMUNIT enmUnit, const char *pszDesc)
1385	{
1386	PDMDRV_ASSERT_DRVINS(pDrvIns);
1387	VM_ASSERT_EMT(pDrvIns->Internal.s.pVMR3);
1388
1389	STAM_REG(pDrvIns->Internal.s.pVMR3, pvSample, enmType, pszName, enmUnit, pszDesc);
1390	/** @todo track the samples so they can be dumped & deregistered when the driver instance is destroyed.
1391	* For now we just have to be careful not to use this call for drivers which can be unloaded. */
1392	}
1393
1394
1395	/** @interface_method_impl{PDMDRVHLP,pfnSTAMRegisterF} */
1396	static DECLCALLBACK(void) pdmR3DrvHlp_STAMRegisterF(PPDMDRVINS pDrvIns, void *pvSample, STAMTYPE enmType, STAMVISIBILITY enmVisibility,
1397	STAMUNIT enmUnit, const char pszDesc, const char pszName, ...)
1398	{
1399	PDMDRV_ASSERT_DRVINS(pDrvIns);
1400	VM_ASSERT_EMT(pDrvIns->Internal.s.pVMR3);
1401
1402	va_list args;
1403	va_start(args, pszName);
1404	int rc = STAMR3RegisterV(pDrvIns->Internal.s.pVMR3, pvSample, enmType, enmVisibility, enmUnit, pszDesc, pszName, args);
1405	va_end(args);
1406	AssertRC(rc);
1407	}
1408
1409
1410	/** @interface_method_impl{PDMDRVHLP,pfnSTAMRegisterV} */
1411	static DECLCALLBACK(void) pdmR3DrvHlp_STAMRegisterV(PPDMDRVINS pDrvIns, void *pvSample, STAMTYPE enmType, STAMVISIBILITY enmVisibility,
1412	STAMUNIT enmUnit, const char pszDesc, const char pszName, va_list args)
1413	{
1414	PDMDRV_ASSERT_DRVINS(pDrvIns);
1415	VM_ASSERT_EMT(pDrvIns->Internal.s.pVMR3);
1416
1417	int rc = STAMR3RegisterV(pDrvIns->Internal.s.pVMR3, pvSample, enmType, enmVisibility, enmUnit, pszDesc, pszName, args);
1418	AssertRC(rc);
1419	}
1420
1421
1422	/** @interface_method_impl{PDMDRVHLP,pfnSTAMDeregister} */
1423	static DECLCALLBACK(int) pdmR3DrvHlp_STAMDeregister(PPDMDRVINS pDrvIns, void *pvSample)
1424	{
1425	PDMDRV_ASSERT_DRVINS(pDrvIns);
1426	VM_ASSERT_EMT(pDrvIns->Internal.s.pVMR3);
1427
1428	int rc = STAMR3DeregisterU(pDrvIns->Internal.s.pVMR3->pUVM, pvSample);
1429	AssertRC(rc);
1430	return rc;
1431	}
1432
1433
1434	/** @interface_method_impl{PDMDRVHLP,pfnSUPCallVMMR0Ex} */
1435	static DECLCALLBACK(int) pdmR3DrvHlp_SUPCallVMMR0Ex(PPDMDRVINS pDrvIns, unsigned uOperation, void *pvArg, unsigned cbArg)
1436	{
1437	PDMDRV_ASSERT_DRVINS(pDrvIns);
1438	LogFlow(("pdmR3DrvHlp_SSMCallVMMR0Ex: caller='%s'/%d: uOperation=%u pvArg=%p cbArg=%d\n",
1439	pDrvIns->pReg->szName, pDrvIns->iInstance, uOperation, pvArg, cbArg));
1440	int rc;
1441	if ( uOperation >= VMMR0_DO_SRV_START
1442	&& uOperation < VMMR0_DO_SRV_END)
1443	rc = SUPR3CallVMMR0Ex(pDrvIns->Internal.s.pVMR3->pVMR0, NIL_VMCPUID, uOperation, 0, (PSUPVMMR0REQHDR)pvArg);
1444	else
1445	{
1446	AssertMsgFailed(("Invalid uOperation=%u\n", uOperation));
1447	rc = VERR_INVALID_PARAMETER;
1448	}
1449
1450	LogFlow(("pdmR3DrvHlp_SUPCallVMMR0Ex: caller='%s'/%d: returns %Rrc\n", pDrvIns->pReg->szName, pDrvIns->iInstance, rc));
1451	return rc;
1452	}
1453
1454
1455	/** @interface_method_impl{PDMDRVHLP,pfnUSBRegisterHub} */
1456	static DECLCALLBACK(int) pdmR3DrvHlp_USBRegisterHub(PPDMDRVINS pDrvIns, uint32_t fVersions, uint32_t cPorts, PCPDMUSBHUBREG pUsbHubReg, PPCPDMUSBHUBHLP ppUsbHubHlp)
1457	{
1458	PDMDRV_ASSERT_DRVINS(pDrvIns);
1459	VM_ASSERT_EMT(pDrvIns->Internal.s.pVMR3);
1460	LogFlow(("pdmR3DrvHlp_USBRegisterHub: caller='%s'/%d: fVersions=%#x cPorts=%#x pUsbHubReg=%p ppUsbHubHlp=%p\n",
1461	pDrvIns->pReg->szName, pDrvIns->iInstance, fVersions, cPorts, pUsbHubReg, ppUsbHubHlp));
1462
1463	#ifdef VBOX_WITH_USB
1464	int rc = pdmR3UsbRegisterHub(pDrvIns->Internal.s.pVMR3, pDrvIns, fVersions, cPorts, pUsbHubReg, ppUsbHubHlp);
1465	#else
1466	int rc = VERR_NOT_SUPPORTED;
1467	#endif
1468
1469	LogFlow(("pdmR3DrvHlp_USBRegisterHub: caller='%s'/%d: returns %Rrc\n", pDrvIns->pReg->szName, pDrvIns->iInstance, rc));
1470	return rc;
1471	}
1472
1473
1474	/** @interface_method_impl{PDMDRVHLP,pfnSetAsyncNotification} */
1475	static DECLCALLBACK(int) pdmR3DrvHlp_SetAsyncNotification(PPDMDRVINS pDrvIns, PFNPDMDRVASYNCNOTIFY pfnAsyncNotify)
1476	{
1477	PDMDRV_ASSERT_DRVINS(pDrvIns);
1478	VM_ASSERT_EMT0(pDrvIns->Internal.s.pVMR3);
1479	LogFlow(("pdmR3DrvHlp_SetAsyncNotification: caller='%s'/%d: pfnAsyncNotify=%p\n", pDrvIns->pReg->szName, pDrvIns->iInstance, pfnAsyncNotify));
1480
1481	int rc = VINF_SUCCESS;
1482	AssertStmt(pfnAsyncNotify, rc = VERR_INVALID_PARAMETER);
1483	AssertStmt(!pDrvIns->Internal.s.pfnAsyncNotify, rc = VERR_WRONG_ORDER);
1484	AssertStmt(pDrvIns->Internal.s.fVMSuspended \|\| pDrvIns->Internal.s.fVMReset, rc = VERR_WRONG_ORDER);
1485	VMSTATE enmVMState = VMR3GetState(pDrvIns->Internal.s.pVMR3);
1486	AssertStmt( enmVMState == VMSTATE_SUSPENDING
1487	\|\| enmVMState == VMSTATE_SUSPENDING_EXT_LS
1488	\|\| enmVMState == VMSTATE_SUSPENDING_LS
1489	\|\| enmVMState == VMSTATE_RESETTING
1490	\|\| enmVMState == VMSTATE_RESETTING_LS
1491	\|\| enmVMState == VMSTATE_POWERING_OFF
1492	\|\| enmVMState == VMSTATE_POWERING_OFF_LS,
1493	rc = VERR_INVALID_STATE);
1494
1495	if (RT_SUCCESS(rc))
1496	pDrvIns->Internal.s.pfnAsyncNotify = pfnAsyncNotify;
1497
1498	LogFlow(("pdmR3DrvHlp_SetAsyncNotification: caller='%s'/%d: returns %Rrc\n", pDrvIns->pReg->szName, pDrvIns->iInstance, rc));
1499	return rc;
1500	}
1501
1502
1503	/** @interface_method_impl{PDMDRVHLP,pfnAsyncNotificationCompleted} */
1504	static DECLCALLBACK(void) pdmR3DrvHlp_AsyncNotificationCompleted(PPDMDRVINS pDrvIns)
1505	{
1506	PDMDRV_ASSERT_DRVINS(pDrvIns);
1507	PVM pVM = pDrvIns->Internal.s.pVMR3;
1508
1509	VMSTATE enmVMState = VMR3GetState(pVM);
1510	if ( enmVMState == VMSTATE_SUSPENDING
1511	\|\| enmVMState == VMSTATE_SUSPENDING_EXT_LS
1512	\|\| enmVMState == VMSTATE_SUSPENDING_LS
1513	\|\| enmVMState == VMSTATE_RESETTING
1514	\|\| enmVMState == VMSTATE_RESETTING_LS
1515	\|\| enmVMState == VMSTATE_POWERING_OFF
1516	\|\| enmVMState == VMSTATE_POWERING_OFF_LS)
1517	{
1518	LogFlow(("pdmR3DrvHlp_AsyncNotificationCompleted: caller='%s'/%d:\n", pDrvIns->pReg->szName, pDrvIns->iInstance));
1519	VMR3AsyncPdmNotificationWakeupU(pVM->pUVM);
1520	}
1521	else
1522	LogFlow(("pdmR3DrvHlp_AsyncNotificationCompleted: caller='%s'/%d: enmVMState=%d\n", pDrvIns->pReg->szName, pDrvIns->iInstance, enmVMState));
1523	}
1524
1525
1526	/** @interface_method_impl{PDMDRVHLP,pfnThreadCreate} */
1527	static DECLCALLBACK(int) pdmR3DrvHlp_ThreadCreate(PPDMDRVINS pDrvIns, PPPDMTHREAD ppThread, void *pvUser, PFNPDMTHREADDRV pfnThread,
1528	PFNPDMTHREADWAKEUPDRV pfnWakeup, size_t cbStack, RTTHREADTYPE enmType, const char *pszName)
1529	{
1530	PDMDRV_ASSERT_DRVINS(pDrvIns);
1531	VM_ASSERT_EMT(pDrvIns->Internal.s.pVMR3);
1532	LogFlow(("pdmR3DrvHlp_ThreadCreate: caller='%s'/%d: ppThread=%p pvUser=%p pfnThread=%p pfnWakeup=%p cbStack=%#zx enmType=%d pszName=%p:{%s}\n",
1533	pDrvIns->pReg->szName, pDrvIns->iInstance, ppThread, pvUser, pfnThread, pfnWakeup, cbStack, enmType, pszName, pszName));
1534
1535	int rc = pdmR3ThreadCreateDriver(pDrvIns->Internal.s.pVMR3, pDrvIns, ppThread, pvUser, pfnThread, pfnWakeup, cbStack, enmType, pszName);
1536
1537	LogFlow(("pdmR3DrvHlp_ThreadCreate: caller='%s'/%d: returns %Rrc *ppThread=%RTthrd\n", pDrvIns->pReg->szName, pDrvIns->iInstance,
1538	rc, *ppThread));
1539	return rc;
1540	}
1541
1542
1543	/** @interface_method_impl{PDMDRVHLP,pfnAsyncCompletionTemplateCreate} */
1544	static DECLCALLBACK(int) pdmR3DrvHlp_AsyncCompletionTemplateCreate(PPDMDRVINS pDrvIns, PPPDMASYNCCOMPLETIONTEMPLATE ppTemplate,
1545	PFNPDMASYNCCOMPLETEDRV pfnCompleted, void *pvTemplateUser,
1546	const char *pszDesc)
1547	{
1548	PDMDRV_ASSERT_DRVINS(pDrvIns);
1549	LogFlow(("pdmR3DrvHlp_AsyncCompletionTemplateCreate: caller='%s'/%d: ppTemplate=%p pfnCompleted=%p pszDesc=%p:{%s}\n",
1550	pDrvIns->pReg->szName, pDrvIns->iInstance, ppTemplate, pfnCompleted, pszDesc, pszDesc));
1551
1552	int rc = pdmR3AsyncCompletionTemplateCreateDriver(pDrvIns->Internal.s.pVMR3, pDrvIns, ppTemplate, pfnCompleted, pvTemplateUser, pszDesc);
1553
1554	LogFlow(("pdmR3DrvHlp_AsyncCompletionTemplateCreate: caller='%s'/%d: returns %Rrc *ppThread=%p\n", pDrvIns->pReg->szName,
1555	pDrvIns->iInstance, rc, *ppTemplate));
1556	return rc;
1557	}
1558
1559
1560	#ifdef VBOX_WITH_NETSHAPER
1561	/** @interface_method_impl{PDMDRVHLP,pfnNetShaperAttach} */
1562	static DECLCALLBACK(int) pdmR3DrvHlp_NetShaperAttach(PPDMDRVINS pDrvIns, const char *pszBwGroup, PPDMNSFILTER pFilter)
1563	{
1564	PDMDRV_ASSERT_DRVINS(pDrvIns);
1565	LogFlow(("pdmR3DrvHlp_NetShaperAttach: caller='%s'/%d: pFilter=%p pszBwGroup=%p:{%s}\n",
1566	pDrvIns->pReg->szName, pDrvIns->iInstance, pFilter, pszBwGroup, pszBwGroup));
1567
1568	int rc = PDMR3NsAttach(pDrvIns->Internal.s.pVMR3->pUVM, pDrvIns, pszBwGroup, pFilter);
1569
1570	LogFlow(("pdmR3DrvHlp_NetShaperAttach: caller='%s'/%d: returns %Rrc\n", pDrvIns->pReg->szName,
1571	pDrvIns->iInstance, rc));
1572	return rc;
1573	}
1574
1575
1576	/** @interface_method_impl{PDMDRVHLP,pfnNetShaperDetach} */
1577	static DECLCALLBACK(int) pdmR3DrvHlp_NetShaperDetach(PPDMDRVINS pDrvIns, PPDMNSFILTER pFilter)
1578	{
1579	PDMDRV_ASSERT_DRVINS(pDrvIns);
1580	LogFlow(("pdmR3DrvHlp_NetShaperDetach: caller='%s'/%d: pFilter=%p\n",
1581	pDrvIns->pReg->szName, pDrvIns->iInstance, pFilter));
1582
1583	int rc = PDMR3NsDetach(pDrvIns->Internal.s.pVMR3->pUVM, pDrvIns, pFilter);
1584
1585	LogFlow(("pdmR3DrvHlp_NetShaperDetach: caller='%s'/%d: returns %Rrc\n", pDrvIns->pReg->szName,
1586	pDrvIns->iInstance, rc));
1587	return rc;
1588	}
1589	#endif /* VBOX_WITH_NETSHAPER */
1590
1591
1592	/** @interface_method_impl{PDMDRVHLP,pfnLdrGetRCInterfaceSymbols} */
1593	static DECLCALLBACK(int) pdmR3DrvHlp_LdrGetRCInterfaceSymbols(PPDMDRVINS pDrvIns, void *pvInterface, size_t cbInterface,
1594	const char pszSymPrefix, const char pszSymList)
1595	{
1596	PDMDRV_ASSERT_DRVINS(pDrvIns);
1597	VM_ASSERT_EMT(pDrvIns->Internal.s.pVMR3);
1598	LogFlow(("pdmR3DrvHlp_LdrGetRCInterfaceSymbols: caller='%s'/%d: pvInterface=%p cbInterface=%zu pszSymPrefix=%p:{%s} pszSymList=%p:{%s}\n",
1599	pDrvIns->pReg->szName, pDrvIns->iInstance, pvInterface, cbInterface, pszSymPrefix, pszSymPrefix, pszSymList, pszSymList));
1600
1601	int rc;
1602	if ( strncmp(pszSymPrefix, "drv", 3) == 0
1603	&& RTStrIStr(pszSymPrefix + 3, pDrvIns->pReg->szName) != NULL)
1604	{
1605	if (pDrvIns->pReg->fFlags & PDM_DRVREG_FLAGS_RC)
1606	rc = PDMR3LdrGetInterfaceSymbols(pDrvIns->Internal.s.pVMR3,
1607	pvInterface, cbInterface,
1608	pDrvIns->pReg->szRCMod, pDrvIns->Internal.s.pDrv->pszRCSearchPath,
1609	pszSymPrefix, pszSymList,
1610	false /fRing0OrRC/);
1611	else
1612	{
1613	AssertMsgFailed(("Not a raw-mode enabled driver\n"));
1614	rc = VERR_PERMISSION_DENIED;
1615	}
1616	}
1617	else
1618	{
1619	AssertMsgFailed(("Invalid prefix '%s' for '%s'; must start with 'drv' and contain the driver name!\n",
1620	pszSymPrefix, pDrvIns->pReg->szName));
1621	rc = VERR_INVALID_NAME;
1622	}
1623
1624	LogFlow(("pdmR3DrvHlp_LdrGetRCInterfaceSymbols: caller='%s'/%d: returns %Rrc\n", pDrvIns->pReg->szName,
1625	pDrvIns->iInstance, rc));
1626	return rc;
1627	}
1628
1629
1630	/** @interface_method_impl{PDMDRVHLP,pfnLdrGetR0InterfaceSymbols} */
1631	static DECLCALLBACK(int) pdmR3DrvHlp_LdrGetR0InterfaceSymbols(PPDMDRVINS pDrvIns, void *pvInterface, size_t cbInterface,
1632	const char pszSymPrefix, const char pszSymList)
1633	{
1634	PDMDRV_ASSERT_DRVINS(pDrvIns);
1635	VM_ASSERT_EMT(pDrvIns->Internal.s.pVMR3);
1636	LogFlow(("pdmR3DrvHlp_LdrGetR0InterfaceSymbols: caller='%s'/%d: pvInterface=%p cbInterface=%zu pszSymPrefix=%p:{%s} pszSymList=%p:{%s}\n",
1637	pDrvIns->pReg->szName, pDrvIns->iInstance, pvInterface, cbInterface, pszSymPrefix, pszSymPrefix, pszSymList, pszSymList));
1638
1639	int rc;
1640	if ( strncmp(pszSymPrefix, "drv", 3) == 0
1641	&& RTStrIStr(pszSymPrefix + 3, pDrvIns->pReg->szName) != NULL)
1642	{
1643	if (pDrvIns->pReg->fFlags & PDM_DRVREG_FLAGS_R0)
1644	rc = PDMR3LdrGetInterfaceSymbols(pDrvIns->Internal.s.pVMR3,
1645	pvInterface, cbInterface,
1646	pDrvIns->pReg->szR0Mod, pDrvIns->Internal.s.pDrv->pszR0SearchPath,
1647	pszSymPrefix, pszSymList,
1648	true /fRing0OrRC/);
1649	else
1650	{
1651	AssertMsgFailed(("Not a ring-0 enabled driver\n"));
1652	rc = VERR_PERMISSION_DENIED;
1653	}
1654	}
1655	else
1656	{
1657	AssertMsgFailed(("Invalid prefix '%s' for '%s'; must start with 'drv' and contain the driver name!\n",
1658	pszSymPrefix, pDrvIns->pReg->szName));
1659	rc = VERR_INVALID_NAME;
1660	}
1661
1662	LogFlow(("pdmR3DrvHlp_LdrGetR0InterfaceSymbols: caller='%s'/%d: returns %Rrc\n", pDrvIns->pReg->szName,
1663	pDrvIns->iInstance, rc));
1664	return rc;
1665	}
1666
1667
1668	/** @interface_method_impl{PDMDRVHLP,pfnCritSectInit} */
1669	static DECLCALLBACK(int) pdmR3DrvHlp_CritSectInit(PPDMDRVINS pDrvIns, PPDMCRITSECT pCritSect,
1670	RT_SRC_POS_DECL, const char *pszName)
1671	{
1672	PDMDRV_ASSERT_DRVINS(pDrvIns);
1673	PVM pVM = pDrvIns->Internal.s.pVMR3;
1674	VM_ASSERT_EMT(pVM);
1675	LogFlow(("pdmR3DrvHlp_CritSectInit: caller='%s'/%d: pCritSect=%p pszName=%s\n",
1676	pDrvIns->pReg->szName, pDrvIns->iInstance, pCritSect, pszName));
1677
1678	int rc = pdmR3CritSectInitDriver(pVM, pDrvIns, pCritSect, RT_SRC_POS_ARGS, "%s_%u", pszName, pDrvIns->iInstance);
1679
1680	LogFlow(("pdmR3DrvHlp_CritSectInit: caller='%s'/%d: returns %Rrc\n", pDrvIns->pReg->szName,
1681	pDrvIns->iInstance, rc));
1682	return rc;
1683	}
1684
1685
1686	/** @interface_method_impl{PDMDRVHLP,pfnCallR0} */
1687	static DECLCALLBACK(int) pdmR3DrvHlp_CallR0(PPDMDRVINS pDrvIns, uint32_t uOperation, uint64_t u64Arg)
1688	{
1689	PDMDRV_ASSERT_DRVINS(pDrvIns);
1690	PVM pVM = pDrvIns->Internal.s.pVMR3;
1691	LogFlow(("pdmR3DrvHlp_CallR0: caller='%s'/%d: uOperation=%#x u64Arg=%#RX64\n",
1692	pDrvIns->pReg->szName, pDrvIns->iInstance, uOperation, u64Arg));
1693
1694	/*
1695	* Lazy resolve the ring-0 entry point.
1696	*/
1697	int rc = VINF_SUCCESS;
1698	PFNPDMDRVREQHANDLERR0 pfnReqHandlerR0 = pDrvIns->Internal.s.pfnReqHandlerR0;
1699	if (RT_UNLIKELY(pfnReqHandlerR0 == NIL_RTR0PTR))
1700	{
1701	if (pDrvIns->pReg->fFlags & PDM_DRVREG_FLAGS_R0)
1702	{
1703	char szSymbol[ sizeof("drvR0") + sizeof(pDrvIns->pReg->szName) + sizeof("ReqHandler")];
1704	strcat(strcat(strcpy(szSymbol, "drvR0"), pDrvIns->pReg->szName), "ReqHandler");
1705	szSymbol[sizeof("drvR0") - 1] = RT_C_TO_UPPER(szSymbol[sizeof("drvR0") - 1]);
1706
1707	rc = PDMR3LdrGetSymbolR0Lazy(pVM, pDrvIns->pReg->szR0Mod, pDrvIns->Internal.s.pDrv->pszR0SearchPath, szSymbol,
1708	&pfnReqHandlerR0);
1709	if (RT_SUCCESS(rc))
1710	pDrvIns->Internal.s.pfnReqHandlerR0 = pfnReqHandlerR0;
1711	else
1712	pfnReqHandlerR0 = NIL_RTR0PTR;
1713	}
1714	else
1715	rc = VERR_ACCESS_DENIED;
1716	}
1717	if (RT_LIKELY(pfnReqHandlerR0 != NIL_RTR0PTR))
1718	{
1719	/*
1720	* Make the ring-0 call.
1721	*/
1722	PDMDRIVERCALLREQHANDLERREQ Req;
1723	Req.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
1724	Req.Hdr.cbReq = sizeof(Req);
1725	Req.pDrvInsR0 = PDMDRVINS_2_R0PTR(pDrvIns);
1726	Req.uOperation = uOperation;
1727	Req.u32Alignment = 0;
1728	Req.u64Arg = u64Arg;
1729	rc = SUPR3CallVMMR0Ex(pVM->pVMR0, NIL_VMCPUID, VMMR0_DO_PDM_DRIVER_CALL_REQ_HANDLER, 0, &Req.Hdr);
1730	}
1731
1732	LogFlow(("pdmR3DrvHlp_CallR0: caller='%s'/%d: returns %Rrc\n", pDrvIns->pReg->szName,
1733	pDrvIns->iInstance, rc));
1734	return rc;
1735	}
1736
1737
1738	/** @interface_method_impl{PDMDRVHLP,pfnFTSetCheckpoint} */
1739	static DECLCALLBACK(int) pdmR3DrvHlp_FTSetCheckpoint(PPDMDRVINS pDrvIns, FTMCHECKPOINTTYPE enmType)
1740	{
1741	PDMDRV_ASSERT_DRVINS(pDrvIns);
1742	return FTMSetCheckpoint(pDrvIns->Internal.s.pVMR3, enmType);
1743	}
1744
1745
1746	/** @interface_method_impl{PDMDRVHLP,pfnBlkCacheRetain} */
1747	static DECLCALLBACK(int) pdmR3DrvHlp_BlkCacheRetain(PPDMDRVINS pDrvIns, PPPDMBLKCACHE ppBlkCache,
1748	PFNPDMBLKCACHEXFERCOMPLETEDRV pfnXferComplete,
1749	PFNPDMBLKCACHEXFERENQUEUEDRV pfnXferEnqueue,
1750	PFNPDMBLKCACHEXFERENQUEUEDISCARDDRV pfnXferEnqueueDiscard,
1751	const char *pcszId)
1752	{
1753	PDMDRV_ASSERT_DRVINS(pDrvIns);
1754	return PDMR3BlkCacheRetainDriver(pDrvIns->Internal.s.pVMR3, pDrvIns, ppBlkCache,
1755	pfnXferComplete, pfnXferEnqueue, pfnXferEnqueueDiscard, pcszId);
1756	}
1757
1758
1759	/**
1760	* The driver helper structure.
1761	*/
1762	const PDMDRVHLPR3 g_pdmR3DrvHlp =
1763	{
1764	PDM_DRVHLPR3_VERSION,
1765	pdmR3DrvHlp_Attach,
1766	pdmR3DrvHlp_Detach,
1767	pdmR3DrvHlp_DetachSelf,
1768	pdmR3DrvHlp_MountPrepare,
1769	pdmR3DrvHlp_AssertEMT,
1770	pdmR3DrvHlp_AssertOther,
1771	pdmR3DrvHlp_VMSetError,
1772	pdmR3DrvHlp_VMSetErrorV,
1773	pdmR3DrvHlp_VMSetRuntimeError,
1774	pdmR3DrvHlp_VMSetRuntimeErrorV,
1775	pdmR3DrvHlp_VMState,
1776	pdmR3DrvHlp_VMTeleportedAndNotFullyResumedYet,
1777	pdmR3DrvHlp_GetSupDrvSession,
1778	pdmR3DrvHlp_QueueCreate,
1779	pdmR3DrvHlp_TMGetVirtualFreq,
1780	pdmR3DrvHlp_TMGetVirtualTime,
1781	pdmR3DrvHlp_TMTimerCreate,
1782	pdmR3DrvHlp_SSMRegister,
1783	pdmR3DrvHlp_SSMDeregister,
1784	pdmR3DrvHlp_DBGFInfoRegister,
1785	pdmR3DrvHlp_DBGFInfoDeregister,
1786	pdmR3DrvHlp_STAMRegister,
1787	pdmR3DrvHlp_STAMRegisterF,
1788	pdmR3DrvHlp_STAMRegisterV,
1789	pdmR3DrvHlp_STAMDeregister,
1790	pdmR3DrvHlp_SUPCallVMMR0Ex,
1791	pdmR3DrvHlp_USBRegisterHub,
1792	pdmR3DrvHlp_SetAsyncNotification,
1793	pdmR3DrvHlp_AsyncNotificationCompleted,
1794	pdmR3DrvHlp_ThreadCreate,
1795	pdmR3DrvHlp_AsyncCompletionTemplateCreate,
1796	#ifdef VBOX_WITH_NETSHAPER
1797	pdmR3DrvHlp_NetShaperAttach,
1798	pdmR3DrvHlp_NetShaperDetach,
1799	#endif /* VBOX_WITH_NETSHAPER */
1800	pdmR3DrvHlp_LdrGetRCInterfaceSymbols,
1801	pdmR3DrvHlp_LdrGetR0InterfaceSymbols,
1802	pdmR3DrvHlp_CritSectInit,
1803	pdmR3DrvHlp_CallR0,
1804	pdmR3DrvHlp_FTSetCheckpoint,
1805	pdmR3DrvHlp_BlkCacheRetain,
1806	PDM_DRVHLPR3_VERSION /* u32TheEnd */
1807	};
1808
1809	/** @} */

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source: vbox/trunk/src/VBox/VMM/VMMR3/PDMDriver.cpp@ 45530

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