PDMDevice.cpp@ 26295

Last change on this file since 26295 was 26172, checked in by vboxsync, 15 years ago
PDM: s/pCfgHandle/pCfg/g - part 1.
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1	/* $Id: PDMDevice.cpp 26172 2010-02-02 20:41:40Z vboxsync $ */
2	/** @file
3	* PDM - Pluggable Device and Driver Manager, Device parts.
4	*/
5
6	/*
7	* Copyright (C) 2006-2010 Sun Microsystems, Inc.
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	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18	* Clara, CA 95054 USA or visit http://www.sun.com if you need
19	* additional information or have any questions.
20	*/
21
22
23	/*******************************************************************************
24	* Header Files *
25	*******************************************************************************/
26	#define LOG_GROUP LOG_GROUP_PDM_DEVICE
27	#include "PDMInternal.h"
28	#include <VBox/pdm.h>
29	#include <VBox/mm.h>
30	#include <VBox/pgm.h>
31	#include <VBox/iom.h>
32	#include <VBox/cfgm.h>
33	#include <VBox/rem.h>
34	#include <VBox/dbgf.h>
35	#include <VBox/vm.h>
36	#include <VBox/vmm.h>
37
38	#include <VBox/version.h>
39	#include <VBox/log.h>
40	#include <VBox/err.h>
41	#include <iprt/alloc.h>
42	#include <iprt/alloca.h>
43	#include <iprt/asm.h>
44	#include <iprt/assert.h>
45	#include <iprt/path.h>
46	#include <iprt/semaphore.h>
47	#include <iprt/string.h>
48	#include <iprt/thread.h>
49
50
51	/*******************************************************************************
52	* Structures and Typedefs *
53	*******************************************************************************/
54	/**
55	* Internal callback structure pointer.
56	* The main purpose is to define the extra data we associate
57	* with PDMDEVREGCB so we can find the VM instance and so on.
58	*/
59	typedef struct PDMDEVREGCBINT
60	{
61	/** The callback structure. */
62	PDMDEVREGCB Core;
63	/** A bit of padding. */
64	uint32_t u32[4];
65	/** VM Handle. */
66	PVM pVM;
67	} PDMDEVREGCBINT;
68	/** Pointer to a PDMDEVREGCBINT structure. */
69	typedef PDMDEVREGCBINT *PPDMDEVREGCBINT;
70	/** Pointer to a const PDMDEVREGCBINT structure. */
71	typedef const PDMDEVREGCBINT *PCPDMDEVREGCBINT;
72
73
74	/*******************************************************************************
75	* Internal Functions *
76	*******************************************************************************/
77	static DECLCALLBACK(int) pdmR3DevReg_Register(PPDMDEVREGCB pCallbacks, PCPDMDEVREG pReg);
78	static int pdmR3DevLoadModules(PVM pVM);
79	static int pdmR3DevLoad(PVM pVM, PPDMDEVREGCBINT pRegCB, const char pszFilename, const char pszName);
80
81
82
83
84	/**
85	* This function will initialize the devices for this VM instance.
86	*
87	*
88	* First of all this mean loading the builtin device and letting them
89	* register themselves. Beyond that any additional device modules are
90	* loaded and called for registration.
91	*
92	* Then the device configuration is enumerated, the instantiation order
93	* is determined, and finally they are instantiated.
94	*
95	* After all devices have been successfully instantiated the primary
96	* PCI Bus device is called to emulate the PCI BIOS, i.e. making the
97	* resource assignments. If there is no PCI device, this step is of course
98	* skipped.
99	*
100	* Finally the init completion routines of the instantiated devices
101	* are called.
102	*
103	* @returns VBox status code.
104	* @param pVM VM Handle.
105	*/
106	int pdmR3DevInit(PVM pVM)
107	{
108	LogFlow(("pdmR3DevInit:\n"));
109
110	AssertRelease(!(RT_OFFSETOF(PDMDEVINS, achInstanceData) & 15));
111	AssertRelease(sizeof(pVM->pdm.s.pDevInstances->Internal.s) <= sizeof(pVM->pdm.s.pDevInstances->Internal.padding));
112
113	/*
114	* Load device modules.
115	*/
116	int rc = pdmR3DevLoadModules(pVM);
117	if (RT_FAILURE(rc))
118	return rc;
119
120	#ifdef VBOX_WITH_USB
121	/* ditto for USB Devices. */
122	rc = pdmR3UsbLoadModules(pVM);
123	if (RT_FAILURE(rc))
124	return rc;
125	#endif
126
127	/*
128	* Get the RC & R0 devhlps and create the devhlp R3 task queue.
129	*/
130	PCPDMDEVHLPRC pHlpRC;
131	rc = PDMR3LdrGetSymbolRC(pVM, NULL, "g_pdmRCDevHlp", &pHlpRC);
132	AssertReleaseRCReturn(rc, rc);
133
134	PCPDMDEVHLPR0 pHlpR0;
135	rc = PDMR3LdrGetSymbolR0(pVM, NULL, "g_pdmR0DevHlp", &pHlpR0);
136	AssertReleaseRCReturn(rc, rc);
137
138	rc = PDMR3QueueCreateInternal(pVM, sizeof(PDMDEVHLPTASK), 8, 0, pdmR3DevHlpQueueConsumer, true, "DevHlp",
139	&pVM->pdm.s.pDevHlpQueueR3);
140	AssertRCReturn(rc, rc);
141	pVM->pdm.s.pDevHlpQueueR0 = PDMQueueR0Ptr(pVM->pdm.s.pDevHlpQueueR3);
142	pVM->pdm.s.pDevHlpQueueRC = PDMQueueRCPtr(pVM->pdm.s.pDevHlpQueueR3);
143
144
145	/*
146	*
147	* Enumerate the device instance configurations
148	* and come up with a instantiation order.
149	*
150	*/
151	/* Switch to /Devices, which contains the device instantiations. */
152	PCFGMNODE pDevicesNode = CFGMR3GetChild(CFGMR3GetRoot(pVM), "Devices");
153
154	/*
155	* Count the device instances.
156	*/
157	PCFGMNODE pCur;
158	PCFGMNODE pInstanceNode;
159	unsigned cDevs = 0;
160	for (pCur = CFGMR3GetFirstChild(pDevicesNode); pCur; pCur = CFGMR3GetNextChild(pCur))
161	for (pInstanceNode = CFGMR3GetFirstChild(pCur); pInstanceNode; pInstanceNode = CFGMR3GetNextChild(pInstanceNode))
162	cDevs++;
163	if (!cDevs)
164	{
165	Log(("PDM: No devices were configured!\n"));
166	return VINF_SUCCESS;
167	}
168	Log2(("PDM: cDevs=%d!\n", cDevs));
169
170	/*
171	* Collect info on each device instance.
172	*/
173	struct DEVORDER
174	{
175	/** Configuration node. */
176	PCFGMNODE pNode;
177	/** Pointer to device. */
178	PPDMDEV pDev;
179	/** Init order. */
180	uint32_t u32Order;
181	/** VBox instance number. */
182	uint32_t iInstance;
183	} paDevs = (struct DEVORDER )alloca(sizeof(paDevs[0]) * (cDevs + 1)); /* (One extra for swapping) */
184	Assert(paDevs);
185	unsigned i = 0;
186	for (pCur = CFGMR3GetFirstChild(pDevicesNode); pCur; pCur = CFGMR3GetNextChild(pCur))
187	{
188	/* Get the device name. */
189	char szName[sizeof(paDevs[0].pDev->pReg->szName)];
190	rc = CFGMR3GetName(pCur, szName, sizeof(szName));
191	AssertMsgRCReturn(rc, ("Configuration error: device name is too long (or something)! rc=%Rrc\n", rc), rc);
192
193	/* Find the device. */
194	PPDMDEV pDev = pdmR3DevLookup(pVM, szName);
195	AssertMsgReturn(pDev, ("Configuration error: device '%s' not found!\n", szName), VERR_PDM_DEVICE_NOT_FOUND);
196
197	/* Configured priority or use default based on device class? */
198	uint32_t u32Order;
199	rc = CFGMR3QueryU32(pCur, "Priority", &u32Order);
200	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
201	{
202	uint32_t u32 = pDev->pReg->fClass;
203	for (u32Order = 1; !(u32 & u32Order); u32Order <<= 1)
204	/* nop */;
205	}
206	else
207	AssertMsgRCReturn(rc, ("Configuration error: reading \"Priority\" for the '%s' device failed rc=%Rrc!\n", szName, rc), rc);
208
209	/* Enumerate the device instances. */
210	uint32_t const iStart = i;
211	for (pInstanceNode = CFGMR3GetFirstChild(pCur); pInstanceNode; pInstanceNode = CFGMR3GetNextChild(pInstanceNode))
212	{
213	paDevs[i].pNode = pInstanceNode;
214	paDevs[i].pDev = pDev;
215	paDevs[i].u32Order = u32Order;
216
217	/* Get the instance number. */
218	char szInstance[32];
219	rc = CFGMR3GetName(pInstanceNode, szInstance, sizeof(szInstance));
220	AssertMsgRCReturn(rc, ("Configuration error: instance name is too long (or something)! rc=%Rrc\n", rc), rc);
221	char *pszNext = NULL;
222	rc = RTStrToUInt32Ex(szInstance, &pszNext, 0, &paDevs[i].iInstance);
223	AssertMsgRCReturn(rc, ("Configuration error: RTStrToInt32Ex failed on the instance name '%s'! rc=%Rrc\n", szInstance, rc), rc);
224	AssertMsgReturn(!*pszNext, ("Configuration error: the instance name '%s' isn't all digits. (%s)\n", szInstance, pszNext), VERR_INVALID_PARAMETER);
225
226	/* next instance */
227	i++;
228	}
229
230	/* check the number of instances */
231	if (i - iStart > pDev->pReg->cMaxInstances)
232	AssertLogRelMsgFailedReturn(("Configuration error: Too many instances of %s was configured: %u, max %u\n",
233	szName, i - iStart, pDev->pReg->cMaxInstances),
234	VERR_PDM_TOO_MANY_DEVICE_INSTANCES);
235	} /* devices */
236	Assert(i == cDevs);
237
238	/*
239	* Sort the device array ascending on u32Order. (bubble)
240	*/
241	unsigned c = cDevs - 1;
242	while (c)
243	{
244	unsigned j = 0;
245	for (i = 0; i < c; i++)
246	if (paDevs[i].u32Order > paDevs[i + 1].u32Order)
247	{
248	paDevs[cDevs] = paDevs[i + 1];
249	paDevs[i + 1] = paDevs[i];
250	paDevs[i] = paDevs[cDevs];
251	j = i;
252	}
253	c = j;
254	}
255
256
257	/*
258	*
259	* Instantiate the devices.
260	*
261	*/
262	for (i = 0; i < cDevs; i++)
263	{
264	/*
265	* Gather a bit of config.
266	*/
267	/* trusted */
268	bool fTrusted;
269	rc = CFGMR3QueryBool(paDevs[i].pNode, "Trusted", &fTrusted);
270	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
271	fTrusted = false;
272	else if (RT_FAILURE(rc))
273	{
274	AssertMsgFailed(("configuration error: failed to query boolean \"Trusted\", rc=%Rrc\n", rc));
275	return rc;
276	}
277	/* config node */
278	PCFGMNODE pConfigNode = CFGMR3GetChild(paDevs[i].pNode, "Config");
279	if (!pConfigNode)
280	{
281	rc = CFGMR3InsertNode(paDevs[i].pNode, "Config", &pConfigNode);
282	if (RT_FAILURE(rc))
283	{
284	AssertMsgFailed(("Failed to create Config node! rc=%Rrc\n", rc));
285	return rc;
286	}
287	}
288	CFGMR3SetRestrictedRoot(pConfigNode);
289
290	/*
291	* Allocate the device instance.
292	*/
293	AssertReturn(paDevs[i].pDev->cInstances < paDevs[i].pDev->pReg->cMaxInstances, VERR_PDM_TOO_MANY_DEVICE_INSTANCES);
294	size_t cb = RT_OFFSETOF(PDMDEVINS, achInstanceData[paDevs[i].pDev->pReg->cbInstance]);
295	cb = RT_ALIGN_Z(cb, 16);
296	PPDMDEVINS pDevIns;
297	if (paDevs[i].pDev->pReg->fFlags & (PDM_DEVREG_FLAGS_RC \| PDM_DEVREG_FLAGS_R0))
298	rc = MMR3HyperAllocOnceNoRel(pVM, cb, 0, MM_TAG_PDM_DEVICE, (void **)&pDevIns);
299	else
300	rc = MMR3HeapAllocZEx(pVM, MM_TAG_PDM_DEVICE, cb, (void **)&pDevIns);
301	if (RT_FAILURE(rc))
302	{
303	AssertMsgFailed(("Failed to allocate %d bytes of instance data for device '%s'. rc=%Rrc\n",
304	cb, paDevs[i].pDev->pReg->szName, rc));
305	return rc;
306	}
307
308	/*
309	* Initialize it.
310	*/
311	pDevIns->u32Version = PDM_DEVINS_VERSION;
312	//pDevIns->Internal.s.pNextR3 = NULL;
313	//pDevIns->Internal.s.pPerDeviceNextR3 = NULL;
314	pDevIns->Internal.s.pDevR3 = paDevs[i].pDev;
315	pDevIns->Internal.s.pVMR3 = pVM;
316	pDevIns->Internal.s.pVMR0 = pVM->pVMR0;
317	pDevIns->Internal.s.pVMRC = pVM->pVMRC;
318	//pDevIns->Internal.s.pLunsR3 = NULL;
319	pDevIns->Internal.s.pCfgHandle = paDevs[i].pNode;
320	//pDevIns->Internal.s.pPciDeviceR3 = NULL;
321	//pDevIns->Internal.s.pPciBusR3 = NULL;
322	//pDevIns->Internal.s.pPciDeviceR0 = 0;
323	//pDevIns->Internal.s.pPciBusR0 = 0;
324	//pDevIns->Internal.s.pPciDeviceRC = 0;
325	//pDevIns->Internal.s.pPciBusRC = 0;
326	pDevIns->Internal.s.fIntFlags = PDMDEVINSINT_FLAGS_SUSPENDED;
327	pDevIns->pHlpR3 = fTrusted ? &g_pdmR3DevHlpTrusted : &g_pdmR3DevHlpUnTrusted;
328	pDevIns->pHlpRC = pHlpRC;
329	pDevIns->pHlpR0 = pHlpR0;
330	pDevIns->pReg = paDevs[i].pDev->pReg;
331	pDevIns->pCfg = pConfigNode;
332	pDevIns->iInstance = paDevs[i].iInstance;
333	pDevIns->pvInstanceDataR3 = &pDevIns->achInstanceData[0];
334	pDevIns->pvInstanceDataRC = pDevIns->pReg->fFlags & PDM_DEVREG_FLAGS_RC
335	? MMHyperR3ToRC(pVM, pDevIns->pvInstanceDataR3) : NIL_RTRCPTR;
336	pDevIns->pvInstanceDataR0 = pDevIns->pReg->fFlags & PDM_DEVREG_FLAGS_R0
337	? MMHyperR3ToR0(pVM, pDevIns->pvInstanceDataR3) : NIL_RTR0PTR;
338
339	/*
340	* Link it into all the lists.
341	*/
342	/* The global instance FIFO. */
343	PPDMDEVINS pPrev1 = pVM->pdm.s.pDevInstances;
344	if (!pPrev1)
345	pVM->pdm.s.pDevInstances = pDevIns;
346	else
347	{
348	while (pPrev1->Internal.s.pNextR3)
349	pPrev1 = pPrev1->Internal.s.pNextR3;
350	pPrev1->Internal.s.pNextR3 = pDevIns;
351	}
352
353	/* The per device instance FIFO. */
354	PPDMDEVINS pPrev2 = paDevs[i].pDev->pInstances;
355	if (!pPrev2)
356	paDevs[i].pDev->pInstances = pDevIns;
357	else
358	{
359	while (pPrev2->Internal.s.pPerDeviceNextR3)
360	pPrev2 = pPrev2->Internal.s.pPerDeviceNextR3;
361	pPrev2->Internal.s.pPerDeviceNextR3 = pDevIns;
362	}
363
364	/*
365	* Call the constructor.
366	*/
367	paDevs[i].pDev->cInstances++;
368	Log(("PDM: Constructing device '%s' instance %d...\n", pDevIns->pReg->szName, pDevIns->iInstance));
369	rc = pDevIns->pReg->pfnConstruct(pDevIns, pDevIns->iInstance, pDevIns->pCfg);
370	if (RT_FAILURE(rc))
371	{
372	LogRel(("PDM: Failed to construct '%s'/%d! %Rra\n", pDevIns->pReg->szName, pDevIns->iInstance, rc));
373	paDevs[i].pDev->cInstances--;
374	/* because we're damn lazy right now, we'll say that the destructor will be called even if the constructor fails. */
375	return rc;
376	}
377	} /* for device instances */
378
379	#ifdef VBOX_WITH_USB
380	/* ditto for USB Devices. */
381	rc = pdmR3UsbInstantiateDevices(pVM);
382	if (RT_FAILURE(rc))
383	return rc;
384	#endif
385
386
387	/*
388	*
389	* PCI BIOS Fake and Init Complete.
390	*
391	*/
392	if (pVM->pdm.s.aPciBuses[0].pDevInsR3)
393	{
394	pdmLock(pVM);
395	rc = pVM->pdm.s.aPciBuses[0].pfnFakePCIBIOSR3(pVM->pdm.s.aPciBuses[0].pDevInsR3);
396	pdmUnlock(pVM);
397	if (RT_FAILURE(rc))
398	{
399	AssertMsgFailed(("PCI BIOS fake failed rc=%Rrc\n", rc));
400	return rc;
401	}
402	}
403
404	for (PPDMDEVINS pDevIns = pVM->pdm.s.pDevInstances; pDevIns; pDevIns = pDevIns->Internal.s.pNextR3)
405	{
406	if (pDevIns->pReg->pfnInitComplete)
407	{
408	rc = pDevIns->pReg->pfnInitComplete(pDevIns);
409	if (RT_FAILURE(rc))
410	{
411	AssertMsgFailed(("InitComplete on device '%s'/%d failed with rc=%Rrc\n",
412	pDevIns->pReg->szName, pDevIns->iInstance, rc));
413	return rc;
414	}
415	}
416	}
417
418	#ifdef VBOX_WITH_USB
419	/* ditto for USB Devices. */
420	rc = pdmR3UsbVMInitComplete(pVM);
421	if (RT_FAILURE(rc))
422	return rc;
423	#endif
424
425	LogFlow(("pdmR3DevInit: returns %Rrc\n", VINF_SUCCESS));
426	return VINF_SUCCESS;
427	}
428
429
430	/**
431	* Lookups a device structure by name.
432	* @internal
433	*/
434	PPDMDEV pdmR3DevLookup(PVM pVM, const char *pszName)
435	{
436	size_t cchName = strlen(pszName);
437	for (PPDMDEV pDev = pVM->pdm.s.pDevs; pDev; pDev = pDev->pNext)
438	if ( pDev->cchName == cchName
439	&& !strcmp(pDev->pReg->szName, pszName))
440	return pDev;
441	return NULL;
442	}
443
444
445	/**
446	* Loads the device modules.
447	*
448	* @returns VBox status code.
449	* @param pVM Pointer to the shared VM structure.
450	*/
451	static int pdmR3DevLoadModules(PVM pVM)
452	{
453	/*
454	* Initialize the callback structure.
455	*/
456	PDMDEVREGCBINT RegCB;
457	RegCB.Core.u32Version = PDM_DEVREG_CB_VERSION;
458	RegCB.Core.pfnRegister = pdmR3DevReg_Register;
459	RegCB.pVM = pVM;
460
461	/*
462	* Load the builtin module
463	*/
464	PCFGMNODE pDevicesNode = CFGMR3GetChild(CFGMR3GetRoot(pVM), "PDM/Devices");
465	bool fLoadBuiltin;
466	int rc = CFGMR3QueryBool(pDevicesNode, "LoadBuiltin", &fLoadBuiltin);
467	if (rc == VERR_CFGM_VALUE_NOT_FOUND \|\| rc == VERR_CFGM_NO_PARENT)
468	fLoadBuiltin = true;
469	else if (RT_FAILURE(rc))
470	{
471	AssertMsgFailed(("Configuration error: Querying boolean \"LoadBuiltin\" failed with %Rrc\n", rc));
472	return rc;
473	}
474	if (fLoadBuiltin)
475	{
476	/* make filename */
477	char pszFilename = pdmR3FileR3("VBoxDD", / fShared = */ true);
478	if (!pszFilename)
479	return VERR_NO_TMP_MEMORY;
480	rc = pdmR3DevLoad(pVM, &RegCB, pszFilename, "VBoxDD");
481	RTMemTmpFree(pszFilename);
482	if (RT_FAILURE(rc))
483	return rc;
484
485	/* make filename */
486	pszFilename = pdmR3FileR3("VBoxDD2", /* fShared = */ true);
487	if (!pszFilename)
488	return VERR_NO_TMP_MEMORY;
489	rc = pdmR3DevLoad(pVM, &RegCB, pszFilename, "VBoxDD2");
490	RTMemTmpFree(pszFilename);
491	if (RT_FAILURE(rc))
492	return rc;
493	}
494
495	/*
496	* Load additional device modules.
497	*/
498	PCFGMNODE pCur;
499	for (pCur = CFGMR3GetFirstChild(pDevicesNode); pCur; pCur = CFGMR3GetNextChild(pCur))
500	{
501	/*
502	* Get the name and path.
503	*/
504	char szName[PDMMOD_NAME_LEN];
505	rc = CFGMR3GetName(pCur, &szName[0], sizeof(szName));
506	if (rc == VERR_CFGM_NOT_ENOUGH_SPACE)
507	{
508	AssertMsgFailed(("configuration error: The module name is too long, cchName=%zu.\n", CFGMR3GetNameLen(pCur)));
509	return VERR_PDM_MODULE_NAME_TOO_LONG;
510	}
511	else if (RT_FAILURE(rc))
512	{
513	AssertMsgFailed(("CFGMR3GetName -> %Rrc.\n", rc));
514	return rc;
515	}
516
517	/* the path is optional, if no path the module name + path is used. */
518	char szFilename[RTPATH_MAX];
519	rc = CFGMR3QueryString(pCur, "Path", &szFilename[0], sizeof(szFilename));
520	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
521	strcpy(szFilename, szName);
522	else if (RT_FAILURE(rc))
523	{
524	AssertMsgFailed(("configuration error: Failure to query the module path, rc=%Rrc.\n", rc));
525	return rc;
526	}
527
528	/* prepend path? */
529	if (!RTPathHavePath(szFilename))
530	{
531	char *psz = pdmR3FileR3(szFilename);
532	if (!psz)
533	return VERR_NO_TMP_MEMORY;
534	size_t cch = strlen(psz) + 1;
535	if (cch > sizeof(szFilename))
536	{
537	RTMemTmpFree(psz);
538	AssertMsgFailed(("Filename too long! cch=%d '%s'\n", cch, psz));
539	return VERR_FILENAME_TOO_LONG;
540	}
541	memcpy(szFilename, psz, cch);
542	RTMemTmpFree(psz);
543	}
544
545	/*
546	* Load the module and register it's devices.
547	*/
548	rc = pdmR3DevLoad(pVM, &RegCB, szFilename, szName);
549	if (RT_FAILURE(rc))
550	return rc;
551	}
552
553	return VINF_SUCCESS;
554	}
555
556
557	/**
558	* Loads one device module and call the registration entry point.
559	*
560	* @returns VBox status code.
561	* @param pVM VM handle.
562	* @param pRegCB The registration callback stuff.
563	* @param pszFilename Module filename.
564	* @param pszName Module name.
565	*/
566	static int pdmR3DevLoad(PVM pVM, PPDMDEVREGCBINT pRegCB, const char pszFilename, const char pszName)
567	{
568	/*
569	* Load it.
570	*/
571	int rc = pdmR3LoadR3U(pVM->pUVM, pszFilename, pszName);
572	if (RT_SUCCESS(rc))
573	{
574	/*
575	* Get the registration export and call it.
576	*/
577	FNPDMVBOXDEVICESREGISTER *pfnVBoxDevicesRegister;
578	rc = PDMR3LdrGetSymbolR3(pVM, pszName, "VBoxDevicesRegister", (void **)&pfnVBoxDevicesRegister);
579	if (RT_SUCCESS(rc))
580	{
581	Log(("PDM: Calling VBoxDevicesRegister (%p) of %s (%s)\n", pfnVBoxDevicesRegister, pszName, pszFilename));
582	rc = pfnVBoxDevicesRegister(&pRegCB->Core, VBOX_VERSION);
583	if (RT_SUCCESS(rc))
584	Log(("PDM: Successfully loaded device module %s (%s).\n", pszName, pszFilename));
585	else
586	AssertMsgFailed(("VBoxDevicesRegister failed with rc=%Rrc for module %s (%s)\n", rc, pszName, pszFilename));
587	}
588	else
589	{
590	AssertMsgFailed(("Failed to locate 'VBoxDevicesRegister' in %s (%s) rc=%Rrc\n", pszName, pszFilename, rc));
591	if (rc == VERR_SYMBOL_NOT_FOUND)
592	rc = VERR_PDM_NO_REGISTRATION_EXPORT;
593	}
594	}
595	else
596	AssertMsgFailed(("Failed to load %s %s!\n", pszFilename, pszName));
597	return rc;
598	}
599
600
601	/**
602	* @interface_method_impl{PDMDEVREGCB,pfnRegister}
603	*/
604	static DECLCALLBACK(int) pdmR3DevReg_Register(PPDMDEVREGCB pCallbacks, PCPDMDEVREG pReg)
605	{
606	/*
607	* Validate the registration structure.
608	*/
609	Assert(pReg);
610	AssertMsgReturn(pReg->u32Version == PDM_DEVREG_VERSION,
611	("Unknown struct version %#x!\n", pReg->u32Version),
612	VERR_PDM_UNKNOWN_DEVREG_VERSION);
613
614	AssertMsgReturn( pReg->szName[0]
615	&& strlen(pReg->szName) < sizeof(pReg->szName),
616	("Invalid name '%s'\n", pReg->szName),
617	VERR_PDM_INVALID_DEVICE_REGISTRATION);
618	AssertMsgReturn( !(pReg->fFlags & PDM_DEVREG_FLAGS_RC)
619	\|\| ( pReg->szRCMod[0]
620	&& strlen(pReg->szRCMod) < sizeof(pReg->szRCMod)),
621	("Invalid GC module name '%s' - (Device %s)\n", pReg->szRCMod, pReg->szName),
622	VERR_PDM_INVALID_DEVICE_REGISTRATION);
623	AssertMsgReturn( !(pReg->fFlags & PDM_DEVREG_FLAGS_R0)
624	\|\| ( pReg->szR0Mod[0]
625	&& strlen(pReg->szR0Mod) < sizeof(pReg->szR0Mod)),
626	("Invalid R0 module name '%s' - (Device %s)\n", pReg->szR0Mod, pReg->szName),
627	VERR_PDM_INVALID_DEVICE_REGISTRATION);
628	AssertMsgReturn((pReg->fFlags & PDM_DEVREG_FLAGS_HOST_BITS_MASK) == PDM_DEVREG_FLAGS_HOST_BITS_DEFAULT,
629	("Invalid host bits flags! fFlags=%#x (Device %s)\n", pReg->fFlags, pReg->szName),
630	VERR_PDM_INVALID_DEVICE_HOST_BITS);
631	AssertMsgReturn((pReg->fFlags & PDM_DEVREG_FLAGS_GUEST_BITS_MASK),
632	("Invalid guest bits flags! fFlags=%#x (Device %s)\n", pReg->fFlags, pReg->szName),
633	VERR_PDM_INVALID_DEVICE_REGISTRATION);
634	AssertMsgReturn(pReg->fClass,
635	("No class! (Device %s)\n", pReg->szName),
636	VERR_PDM_INVALID_DEVICE_REGISTRATION);
637	AssertMsgReturn(pReg->cMaxInstances > 0,
638	("Max instances %u! (Device %s)\n", pReg->cMaxInstances, pReg->szName),
639	VERR_PDM_INVALID_DEVICE_REGISTRATION);
640	AssertMsgReturn(pReg->cbInstance <= (uint32_t)(pReg->fFlags & (PDM_DEVREG_FLAGS_RC \| PDM_DEVREG_FLAGS_R0) ? 96 * _1K : _1M),
641	("Instance size %d bytes! (Device %s)\n", pReg->cbInstance, pReg->szName),
642	VERR_PDM_INVALID_DEVICE_REGISTRATION);
643	AssertMsgReturn(pReg->pfnConstruct,
644	("No constructore! (Device %s)\n", pReg->szName),
645	VERR_PDM_INVALID_DEVICE_REGISTRATION);
646	AssertLogRelMsgReturn((pReg->fFlags & PDM_DEVREG_FLAGS_GUEST_BITS_MASK) == PDM_DEVREG_FLAGS_GUEST_BITS_DEFAULT,
647	("PDM: Rejected device '%s' because it didn't match the guest bits.\n", pReg->szName),
648	VERR_PDM_INVALID_DEVICE_GUEST_BITS);
649	AssertLogRelMsg(pReg->u32VersionEnd == PDM_DEVREG_VERSION,
650	("u32VersionEnd=%#x, expected %#x. (szName=%s)\n",
651	pReg->u32VersionEnd, PDM_DEVREG_VERSION, pReg->szName));
652
653	/*
654	* Check for duplicate and find FIFO entry at the same time.
655	*/
656	PCPDMDEVREGCBINT pRegCB = (PCPDMDEVREGCBINT)pCallbacks;
657	PPDMDEV pDevPrev = NULL;
658	PPDMDEV pDev = pRegCB->pVM->pdm.s.pDevs;
659	for (; pDev; pDevPrev = pDev, pDev = pDev->pNext)
660	AssertMsgReturn(strcmp(pDev->pReg->szName, pReg->szName),
661	("Device '%s' already exists\n", pReg->szName),
662	VERR_PDM_DEVICE_NAME_CLASH);
663
664	/*
665	* Allocate new device structure and insert it into the list.
666	*/
667	pDev = (PPDMDEV)MMR3HeapAlloc(pRegCB->pVM, MM_TAG_PDM_DEVICE, sizeof(*pDev));
668	if (pDev)
669	{
670	pDev->pNext = NULL;
671	pDev->cInstances = 0;
672	pDev->pInstances = NULL;
673	pDev->pReg = pReg;
674	pDev->cchName = (uint32_t)strlen(pReg->szName);
675
676	if (pDevPrev)
677	pDevPrev->pNext = pDev;
678	else
679	pRegCB->pVM->pdm.s.pDevs = pDev;
680	Log(("PDM: Registered device '%s'\n", pReg->szName));
681	return VINF_SUCCESS;
682	}
683	return VERR_NO_MEMORY;
684	}
685
686
687	/**
688	* Locates a LUN.
689	*
690	* @returns VBox status code.
691	* @param pVM VM Handle.
692	* @param pszDevice Device name.
693	* @param iInstance Device instance.
694	* @param iLun The Logical Unit to obtain the interface of.
695	* @param ppLun Where to store the pointer to the LUN if found.
696	* @thread Try only do this in EMT...
697	*/
698	int pdmR3DevFindLun(PVM pVM, const char *pszDevice, unsigned iInstance, unsigned iLun, PPPDMLUN ppLun)
699	{
700	/*
701	* Iterate registered devices looking for the device.
702	*/
703	size_t cchDevice = strlen(pszDevice);
704	for (PPDMDEV pDev = pVM->pdm.s.pDevs; pDev; pDev = pDev->pNext)
705	{
706	if ( pDev->cchName == cchDevice
707	&& !memcmp(pDev->pReg->szName, pszDevice, cchDevice))
708	{
709	/*
710	* Iterate device instances.
711	*/
712	for (PPDMDEVINS pDevIns = pDev->pInstances; pDevIns; pDevIns = pDevIns->Internal.s.pPerDeviceNextR3)
713	{
714	if (pDevIns->iInstance == iInstance)
715	{
716	/*
717	* Iterate luns.
718	*/
719	for (PPDMLUN pLun = pDevIns->Internal.s.pLunsR3; pLun; pLun = pLun->pNext)
720	{
721	if (pLun->iLun == iLun)
722	{
723	*ppLun = pLun;
724	return VINF_SUCCESS;
725	}
726	}
727	return VERR_PDM_LUN_NOT_FOUND;
728	}
729	}
730	return VERR_PDM_DEVICE_INSTANCE_NOT_FOUND;
731	}
732	}
733	return VERR_PDM_DEVICE_NOT_FOUND;
734	}
735
736
737	/**
738	* Attaches a preconfigured driver to an existing device instance.
739	*
740	* This is used to change drivers and suchlike at runtime.
741	*
742	* @returns VBox status code.
743	* @param pVM VM Handle.
744	* @param pszDevice Device name.
745	* @param iInstance Device instance.
746	* @param iLun The Logical Unit to obtain the interface of.
747	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
748	* @param ppBase Where to store the base interface pointer. Optional.
749	* @thread EMT
750	*/
751	VMMR3DECL(int) PDMR3DeviceAttach(PVM pVM, const char *pszDevice, unsigned iInstance, unsigned iLun, uint32_t fFlags, PPPDMIBASE ppBase)
752	{
753	VM_ASSERT_EMT(pVM);
754	LogFlow(("PDMR3DeviceAttach: pszDevice=%p:{%s} iInstance=%d iLun=%d fFlags=%#x ppBase=%p\n",
755	pszDevice, pszDevice, iInstance, iLun, fFlags, ppBase));
756
757	/*
758	* Find the LUN in question.
759	*/
760	PPDMLUN pLun;
761	int rc = pdmR3DevFindLun(pVM, pszDevice, iInstance, iLun, &pLun);
762	if (RT_SUCCESS(rc))
763	{
764	/*
765	* Can we attach anything at runtime?
766	*/
767	PPDMDEVINS pDevIns = pLun->pDevIns;
768	if (pDevIns->pReg->pfnAttach)
769	{
770	if (!pLun->pTop)
771	{
772	rc = pDevIns->pReg->pfnAttach(pDevIns, iLun, fFlags);
773	}
774	else
775	rc = VERR_PDM_DRIVER_ALREADY_ATTACHED;
776	}
777	else
778	rc = VERR_PDM_DEVICE_NO_RT_ATTACH;
779
780	if (ppBase)
781	*ppBase = pLun->pTop ? &pLun->pTop->IBase : NULL;
782	}
783	else if (ppBase)
784	*ppBase = NULL;
785
786	if (ppBase)
787	LogFlow(("PDMR3DeviceAttach: returns %Rrc ppBase=%p\n", rc, ppBase));
788	else
789	LogFlow(("PDMR3DeviceAttach: returns %Rrc\n", rc));
790	return rc;
791	}
792
793
794	/**
795	* Detaches a driver chain from an existing device instance.
796	*
797	* This is used to change drivers and suchlike at runtime.
798	*
799	* @returns VBox status code.
800	* @param pVM VM Handle.
801	* @param pszDevice Device name.
802	* @param iInstance Device instance.
803	* @param iLun The Logical Unit to obtain the interface of.
804	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
805	* @thread EMT
806	*/
807	VMMR3DECL(int) PDMR3DeviceDetach(PVM pVM, const char *pszDevice, unsigned iInstance, unsigned iLun, uint32_t fFlags)
808	{
809	return PDMR3DriverDetach(pVM, pszDevice, iInstance, iLun, NULL, 0, fFlags);
810	}
811
812
813	/**
814	* Attaches a preconfigured driver to an existing device or driver instance.
815	*
816	* This is used to change drivers and suchlike at runtime. The driver or device
817	* at the end of the chain will be told to attach to whatever is configured
818	* below it.
819	*
820	* @returns VBox status code.
821	* @param pVM VM Handle.
822	* @param pszDevice Device name.
823	* @param iInstance Device instance.
824	* @param iLun The Logical Unit to obtain the interface of.
825	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
826	* @param ppBase Where to store the base interface pointer. Optional.
827	*
828	* @thread EMT
829	*/
830	VMMR3DECL(int) PDMR3DriverAttach(PVM pVM, const char *pszDevice, unsigned iInstance, unsigned iLun, uint32_t fFlags, PPPDMIBASE ppBase)
831	{
832	VM_ASSERT_EMT(pVM);
833	LogFlow(("PDMR3DriverAttach: pszDevice=%p:{%s} iInstance=%d iLun=%d fFlags=%#x ppBase=%p\n",
834	pszDevice, pszDevice, iInstance, iLun, fFlags, ppBase));
835
836	if (ppBase)
837	*ppBase = NULL;
838
839	/*
840	* Find the LUN in question.
841	*/
842	PPDMLUN pLun;
843	int rc = pdmR3DevFindLun(pVM, pszDevice, iInstance, iLun, &pLun);
844	if (RT_SUCCESS(rc))
845	{
846	/*
847	* Anything attached to the LUN?
848	*/
849	PPDMDRVINS pDrvIns = pLun->pTop;
850	if (!pDrvIns)
851	{
852	/* No, ask the device to attach to the new stuff. */
853	PPDMDEVINS pDevIns = pLun->pDevIns;
854	if (pDevIns->pReg->pfnAttach)
855	{
856	rc = pDevIns->pReg->pfnAttach(pDevIns, iLun, fFlags);
857	if (RT_SUCCESS(rc) && ppBase)
858	*ppBase = pLun->pTop ? &pLun->pTop->IBase : NULL;
859	}
860	else
861	rc = VERR_PDM_DEVICE_NO_RT_ATTACH;
862	}
863	else
864	{
865	/* Yes, find the bottom most driver and ask it to attach to the new stuff. */
866	while (pDrvIns->Internal.s.pDown)
867	pDrvIns = pDrvIns->Internal.s.pDown;
868	if (pDrvIns->pReg->pfnAttach)
869	{
870	rc = pDrvIns->pReg->pfnAttach(pDrvIns, fFlags);
871	if (RT_SUCCESS(rc) && ppBase)
872	*ppBase = pDrvIns->Internal.s.pDown
873	? &pDrvIns->Internal.s.pDown->IBase
874	: NULL;
875	}
876	else
877	rc = VERR_PDM_DRIVER_NO_RT_ATTACH;
878	}
879	}
880
881	if (ppBase)
882	LogFlow(("PDMR3DriverAttach: returns %Rrc ppBase=%p\n", rc, ppBase));
883	else
884	LogFlow(("PDMR3DriverAttach: returns %Rrc\n", rc));
885	return rc;
886	}
887
888
889	/**
890	* Detaches the specified driver instance.
891	*
892	* This is used to replumb drivers at runtime for simulating hot plugging and
893	* media changes.
894	*
895	* This is a superset of PDMR3DeviceDetach. It allows detaching drivers from
896	* any driver or device by specifying the driver to start detaching at. The
897	* only prerequisite is that the driver or device above implements the
898	* pfnDetach callback (PDMDRVREG / PDMDEVREG).
899	*
900	* @returns VBox status code.
901	* @param pVM VM Handle.
902	* @param pszDevice Device name.
903	* @param iDevIns Device instance.
904	* @param iLun The Logical Unit in which to look for the driver.
905	* @param pszDriver The name of the driver which to detach. If NULL
906	* then the entire driver chain is detatched.
907	* @param iOccurance The occurance of that driver in the chain. This is
908	* usually 0.
909	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
910	* @thread EMT
911	*/
912	VMMR3DECL(int) PDMR3DriverDetach(PVM pVM, const char *pszDevice, unsigned iDevIns, unsigned iLun,
913	const char *pszDriver, unsigned iOccurance, uint32_t fFlags)
914	{
915	LogFlow(("PDMR3DriverDetach: pszDevice=%p:{%s} iDevIns=%u iLun=%u pszDriver=%p:{%s} iOccurance=%u fFlags=%#x\n",
916	pszDevice, pszDevice, iDevIns, iLun, pszDriver, iOccurance, fFlags));
917	VM_ASSERT_EMT(pVM);
918	AssertPtr(pszDevice);
919	AssertPtrNull(pszDriver);
920	Assert(iOccurance == 0 \|\| pszDriver);
921	Assert(!(fFlags & ~(PDM_TACH_FLAGS_NOT_HOT_PLUG)));
922
923	/*
924	* Find the LUN in question.
925	*/
926	PPDMLUN pLun;
927	int rc = pdmR3DevFindLun(pVM, pszDevice, iDevIns, iLun, &pLun);
928	if (RT_SUCCESS(rc))
929	{
930	/*
931	* Locate the driver.
932	*/
933	PPDMDRVINS pDrvIns = pLun->pTop;
934	if (pDrvIns)
935	{
936	if (pszDriver)
937	{
938	while (pDrvIns)
939	{
940	if (!strcmp(pDrvIns->pReg->szName, pszDriver))
941	{
942	if (iOccurance == 0)
943	break;
944	iOccurance--;
945	}
946	pDrvIns = pDrvIns->Internal.s.pDown;
947	}
948	}
949	if (pDrvIns)
950	rc = pdmR3DrvDetach(pDrvIns, fFlags);
951	else
952	rc = VERR_PDM_DRIVER_INSTANCE_NOT_FOUND;
953	}
954	else
955	rc = VINF_PDM_NO_DRIVER_ATTACHED_TO_LUN;
956	}
957
958	LogFlow(("PDMR3DriverDetach: returns %Rrc\n", rc));
959	return rc;
960	}
961
962
963	/**
964	* Runtime detach and reattach of a new driver chain or sub chain.
965	*
966	* This is intended to be called on a non-EMT thread, this will instantiate the
967	* new driver (sub-)chain, and then the EMTs will do the actual replumbing. The
968	* destruction of the old driver chain will be taken care of on the calling
969	* thread.
970	*
971	* @returns VBox status code.
972	* @param pVM VM Handle.
973	* @param pszDevice Device name.
974	* @param iDevIns Device instance.
975	* @param iLun The Logical Unit in which to look for the driver.
976	* @param pszDriver The name of the driver which to detach and replace.
977	* If NULL then the entire driver chain is to be
978	* reattached.
979	* @param iOccurance The occurance of that driver in the chain. This is
980	* usually 0.
981	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
982	* @param pCfg The configuration of the new driver chain that is
983	* going to be attached. The subtree starts with the
984	* node containing a Driver key, a Config subtree and
985	* optionally an AttachedDriver subtree.
986	* If this parameter is NULL, then this call will work
987	* like at a non-pause version of PDMR3DriverDetach.
988	* @param ppBase Where to store the base interface pointer to the new
989	* driver. Optional.
990	*
991	* @thread Any thread. The EMTs will be involved at some point though.
992	*/
993	VMMR3DECL(int) PDMR3DriverReattach(PVM pVM, const char *pszDevice, unsigned iDevIns, unsigned iLun,
994	const char *pszDriver, unsigned iOccurance, uint32_t fFlags,
995	PCFGMNODE pCfg, PPPDMIBASE ppBase)
996	{
997	return VERR_NOT_IMPLEMENTED;
998	}
999

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source: vbox/trunk/src/VBox/VMM/PDMDevice.cpp@ 26295

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