BusAssignmentManager.cpp

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1	/* $Id: BusAssignmentManager.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
2	/** @file
3	* VirtualBox bus slots assignment manager
4	*/
5
6	/*
7	* Copyright (C) 2010-2024 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_MAIN
33	#include "LoggingNew.h"
34
35	#include "BusAssignmentManager.h"
36
37	#include <iprt/asm.h>
38	#include <iprt/string.h>
39
40	#include <VBox/vmm/cfgm.h>
41	#include <VBox/vmm/vmmr3vtable.h>
42	#include <VBox/com/array.h>
43
44	#include <map>
45	#include <vector>
46	#include <algorithm>
47
48
49	/*********************************************************************************************************************************
50	* Structures and Typedefs *
51	*********************************************************************************************************************************/
52	struct DeviceAssignmentRule
53	{
54	const char *pszName;
55	int iBus;
56	int iDevice;
57	int iFn;
58	int iPriority;
59	};
60
61	struct DeviceAliasRule
62	{
63	const char *pszDevName;
64	const char *pszDevAlias;
65	};
66
67
68	/*********************************************************************************************************************************
69	* Global Variables *
70	*********************************************************************************************************************************/
71	/* Those rules define PCI slots assignment */
72	/** @note
73	* The EFI takes assumptions about PCI slot assignments which are different
74	* from the following tables in certain cases, for example the IDE device
75	* is assumed to be 00:01.1! */
76
77	/* Device Bus Device Function Priority */
78
79	/* Generic rules */
80	static const DeviceAssignmentRule g_aGenericRules[] =
81	{
82	/* VGA controller */
83	{"vga", 0, 2, 0, 0},
84
85	/* VMM device */
86	{"VMMDev", 0, 4, 0, 0},
87
88	/* Audio controllers */
89	{"ichac97", 0, 5, 0, 0},
90	{"hda", 0, 5, 0, 0},
91
92	/* Storage controllers */
93	{"buslogic", 0, 21, 0, 1},
94	{"lsilogicsas", 0, 22, 0, 1},
95	{"nvme", 0, 14, 0, 1},
96	{"virtio-scsi", 0, 15, 0, 1},
97
98	/* USB controllers */
99	{"usb-ohci", 0, 6, 0, 0},
100	{"usb-ehci", 0, 11, 0, 0},
101	{"usb-xhci", 0, 12, 0, 0},
102
103	/* ACPI controller */
104	#if 0
105	// It really should be this for 440FX chipset (part of PIIX4 actually)
106	{"acpi", 0, 1, 3, 0},
107	#else
108	{"acpi", 0, 7, 0, 0},
109	#endif
110
111	/* Network controllers */
112	/* the first network card gets the PCI ID 3, the next 3 gets 8..10,
113	* next 4 get 16..19. In "VMWare compatibility" mode the IDs 3 and 17
114	* swap places, i.e. the first card goes to ID 17=0x11. */
115	{"nic", 0, 3, 0, 1},
116	{"nic", 0, 8, 0, 1},
117	{"nic", 0, 9, 0, 1},
118	{"nic", 0, 10, 0, 1},
119	{"nic", 0, 16, 0, 1},
120	{"nic", 0, 17, 0, 1},
121	{"nic", 0, 18, 0, 1},
122	{"nic", 0, 19, 0, 1},
123
124	/* ISA/LPC controller */
125	{"lpc", 0, 31, 0, 0},
126
127	{ NULL, -1, -1, -1, 0}
128	};
129
130	/* PIIX3 chipset rules */
131	static const DeviceAssignmentRule g_aPiix3Rules[] =
132	{
133	{"piix3ide", 0, 1, 1, 0},
134	{"ahci", 0, 13, 0, 1},
135	{"lsilogic", 0, 20, 0, 1},
136	{"pcibridge", 0, 24, 0, 0},
137	{"pcibridge", 0, 25, 0, 0},
138	{ NULL, -1, -1, -1, 0}
139	};
140
141
142	/* ICH9 chipset rules */
143	static const DeviceAssignmentRule g_aIch9Rules[] =
144	{
145	/* Host Controller */
146	{"i82801", 0, 30, 0, 0},
147
148	/* Those are functions of LPC at 00:1e:00 */
149	/**
150	* Please note, that for devices being functions, like we do here, device 0
151	* must be multifunction, i.e. have header type 0x80. Our LPC device is.
152	* Alternative approach is to assign separate slot to each device.
153	*/
154	{"piix3ide", 0, 31, 1, 2},
155	{"ahci", 0, 31, 2, 2},
156	{"smbus", 0, 31, 3, 2},
157	{"usb-ohci", 0, 31, 4, 2},
158	{"usb-ehci", 0, 31, 5, 2},
159	{"thermal", 0, 31, 6, 2},
160
161	/* to make sure rule never used before rules assigning devices on it */
162	{"ich9pcibridge", 0, 24, 0, 10},
163	{"ich9pcibridge", 0, 25, 0, 10},
164	{"ich9pcibridge", 2, 24, 0, 9}, /* Bridges must be instantiated depth */
165	{"ich9pcibridge", 2, 25, 0, 9}, /* first (assumption in PDM and other */
166	{"ich9pcibridge", 4, 24, 0, 8}, /* places), so make sure that nested */
167	{"ich9pcibridge", 4, 25, 0, 8}, /* bridges are added to the last bridge */
168	{"ich9pcibridge", 6, 24, 0, 7}, /* only, avoiding the need to re-sort */
169	{"ich9pcibridge", 6, 25, 0, 7}, /* everything before starting the VM. */
170	{"ich9pcibridge", 8, 24, 0, 6},
171	{"ich9pcibridge", 8, 25, 0, 6},
172	{"ich9pcibridge", 10, 24, 0, 5},
173	{"ich9pcibridge", 10, 25, 0, 5},
174
175	/* Storage controllers */
176	{"ahci", 1, 0, 0, 0},
177	{"ahci", 1, 1, 0, 0},
178	{"ahci", 1, 2, 0, 0},
179	{"ahci", 1, 3, 0, 0},
180	{"ahci", 1, 4, 0, 0},
181	{"ahci", 1, 5, 0, 0},
182	{"ahci", 1, 6, 0, 0},
183	{"lsilogic", 1, 7, 0, 0},
184	{"lsilogic", 1, 8, 0, 0},
185	{"lsilogic", 1, 9, 0, 0},
186	{"lsilogic", 1, 10, 0, 0},
187	{"lsilogic", 1, 11, 0, 0},
188	{"lsilogic", 1, 12, 0, 0},
189	{"lsilogic", 1, 13, 0, 0},
190	{"buslogic", 1, 14, 0, 0},
191	{"buslogic", 1, 15, 0, 0},
192	{"buslogic", 1, 16, 0, 0},
193	{"buslogic", 1, 17, 0, 0},
194	{"buslogic", 1, 18, 0, 0},
195	{"buslogic", 1, 19, 0, 0},
196	{"buslogic", 1, 20, 0, 0},
197	{"lsilogicsas", 1, 21, 0, 0},
198	{"lsilogicsas", 1, 26, 0, 0},
199	{"lsilogicsas", 1, 27, 0, 0},
200	{"lsilogicsas", 1, 28, 0, 0},
201	{"lsilogicsas", 1, 29, 0, 0},
202	{"lsilogicsas", 1, 30, 0, 0},
203	{"lsilogicsas", 1, 31, 0, 0},
204
205	/* NICs */
206	{"nic", 2, 0, 0, 0},
207	{"nic", 2, 1, 0, 0},
208	{"nic", 2, 2, 0, 0},
209	{"nic", 2, 3, 0, 0},
210	{"nic", 2, 4, 0, 0},
211	{"nic", 2, 5, 0, 0},
212	{"nic", 2, 6, 0, 0},
213	{"nic", 2, 7, 0, 0},
214	{"nic", 2, 8, 0, 0},
215	{"nic", 2, 9, 0, 0},
216	{"nic", 2, 10, 0, 0},
217	{"nic", 2, 11, 0, 0},
218	{"nic", 2, 12, 0, 0},
219	{"nic", 2, 13, 0, 0},
220	{"nic", 2, 14, 0, 0},
221	{"nic", 2, 15, 0, 0},
222	{"nic", 2, 16, 0, 0},
223	{"nic", 2, 17, 0, 0},
224	{"nic", 2, 18, 0, 0},
225	{"nic", 2, 19, 0, 0},
226	{"nic", 2, 20, 0, 0},
227	{"nic", 2, 21, 0, 0},
228	{"nic", 2, 26, 0, 0},
229	{"nic", 2, 27, 0, 0},
230	{"nic", 2, 28, 0, 0},
231	{"nic", 2, 29, 0, 0},
232	{"nic", 2, 30, 0, 0},
233	{"nic", 2, 31, 0, 0},
234
235	/* Storage controller #2 (NVMe, virtio-scsi) */
236	{"nvme", 3, 0, 0, 0},
237	{"nvme", 3, 1, 0, 0},
238	{"nvme", 3, 2, 0, 0},
239	{"nvme", 3, 3, 0, 0},
240	{"nvme", 3, 4, 0, 0},
241	{"nvme", 3, 5, 0, 0},
242	{"nvme", 3, 6, 0, 0},
243	{"virtio-scsi", 3, 7, 0, 0},
244	{"virtio-scsi", 3, 8, 0, 0},
245	{"virtio-scsi", 3, 9, 0, 0},
246	{"virtio-scsi", 3, 10, 0, 0},
247	{"virtio-scsi", 3, 11, 0, 0},
248	{"virtio-scsi", 3, 12, 0, 0},
249	{"virtio-scsi", 3, 13, 0, 0},
250
251	{ NULL, -1, -1, -1, 0}
252	};
253
254
255	/* Virtual Armv8 platform chipset rules */
256	static const DeviceAssignmentRule g_aArmv8Rules[] =
257	{
258	/* VGA controller */
259	{"vga", 0, 0, 0, 0},
260
261	/* VMM device */
262	{"VMMDev", 0, 1, 0, 0},
263
264	/* Audio controllers */
265	{"ichac97", 0, 2, 0, 0},
266	{"hda", 0, 2, 0, 0},
267
268	/* Storage controllers */
269	{"virtio-scsi", 0, 3, 0, 1},
270	{"nvme", 0, 4, 0, 1},
271	{"ahci", 0, 16, 0, 1},
272	{"lsilogicsas", 0, 17, 0, 1},
273
274	/* USB controllers */
275	{"usb-ehci", 0, 5, 0, 0},
276	{"usb-xhci", 0, 6, 0, 0},
277	{"usb-ohci", 0, 7, 0, 0},
278
279	/* Network controllers */
280	{"nic", 0, 8, 0, 1},
281	{"nic", 0, 9, 0, 1},
282	{"nic", 0, 10, 0, 1},
283	{"nic", 0, 11, 0, 1},
284	{"nic", 0, 12, 0, 1},
285	{"nic", 0, 13, 0, 1},
286	{"nic", 0, 14, 0, 1},
287	{"nic", 0, 15, 0, 1},
288
289	/* to make sure rule never used before rules assigning devices on it */
290	{"pci-generic-ecam-bridge", 0, 24, 0, 10},
291	{"pci-generic-ecam-bridge", 0, 25, 0, 10},
292	{"pci-generic-ecam-bridge", 2, 24, 0, 9}, /* Bridges must be instantiated depth */
293	{"pci-generic-ecam-bridge", 2, 25, 0, 9}, /* first (assumption in PDM and other */
294	{"pci-generic-ecam-bridge", 4, 24, 0, 8}, /* places), so make sure that nested */
295	{"pci-generic-ecam-bridge", 4, 25, 0, 8}, /* bridges are added to the last bridge */
296	{"pci-generic-ecam-bridge", 6, 24, 0, 7}, /* only, avoiding the need to re-sort */
297	{"pci-generic-ecam-bridge", 6, 25, 0, 7}, /* everything before starting the VM. */
298	{"pci-generic-ecam-bridge", 8, 24, 0, 6},
299	{"pci-generic-ecam-bridge", 8, 25, 0, 6},
300	{"pci-generic-ecam-bridge", 10, 24, 0, 5},
301	{"pci-generic-ecam-bridge", 10, 25, 0, 5},
302
303	/* Storage controllers */
304	{"ahci", 1, 0, 0, 0},
305	{"ahci", 1, 1, 0, 0},
306	{"ahci", 1, 2, 0, 0},
307	{"ahci", 1, 3, 0, 0},
308	{"ahci", 1, 4, 0, 0},
309	{"ahci", 1, 5, 0, 0},
310	{"ahci", 1, 6, 0, 0},
311	{"lsilogic", 1, 7, 0, 0},
312	{"lsilogic", 1, 8, 0, 0},
313	{"lsilogic", 1, 9, 0, 0},
314	{"lsilogic", 1, 10, 0, 0},
315	{"lsilogic", 1, 11, 0, 0},
316	{"lsilogic", 1, 12, 0, 0},
317	{"lsilogic", 1, 13, 0, 0},
318	{"buslogic", 1, 14, 0, 0},
319	{"buslogic", 1, 15, 0, 0},
320	{"buslogic", 1, 16, 0, 0},
321	{"buslogic", 1, 17, 0, 0},
322	{"buslogic", 1, 18, 0, 0},
323	{"buslogic", 1, 19, 0, 0},
324	{"buslogic", 1, 20, 0, 0},
325	{"lsilogicsas", 1, 21, 0, 0},
326	{"lsilogicsas", 1, 26, 0, 0},
327	{"lsilogicsas", 1, 27, 0, 0},
328	{"lsilogicsas", 1, 28, 0, 0},
329	{"lsilogicsas", 1, 29, 0, 0},
330	{"lsilogicsas", 1, 30, 0, 0},
331	{"lsilogicsas", 1, 31, 0, 0},
332
333	/* NICs */
334	{"nic", 2, 0, 0, 0},
335	{"nic", 2, 1, 0, 0},
336	{"nic", 2, 2, 0, 0},
337	{"nic", 2, 3, 0, 0},
338	{"nic", 2, 4, 0, 0},
339	{"nic", 2, 5, 0, 0},
340	{"nic", 2, 6, 0, 0},
341	{"nic", 2, 7, 0, 0},
342	{"nic", 2, 8, 0, 0},
343	{"nic", 2, 9, 0, 0},
344	{"nic", 2, 10, 0, 0},
345	{"nic", 2, 11, 0, 0},
346	{"nic", 2, 12, 0, 0},
347	{"nic", 2, 13, 0, 0},
348	{"nic", 2, 14, 0, 0},
349	{"nic", 2, 15, 0, 0},
350	{"nic", 2, 16, 0, 0},
351	{"nic", 2, 17, 0, 0},
352	{"nic", 2, 18, 0, 0},
353	{"nic", 2, 19, 0, 0},
354	{"nic", 2, 20, 0, 0},
355	{"nic", 2, 21, 0, 0},
356	{"nic", 2, 26, 0, 0},
357	{"nic", 2, 27, 0, 0},
358	{"nic", 2, 28, 0, 0},
359	{"nic", 2, 29, 0, 0},
360	{"nic", 2, 30, 0, 0},
361	{"nic", 2, 31, 0, 0},
362
363	/* Storage controller #2 (NVMe, virtio-scsi) */
364	{"nvme", 3, 0, 0, 0},
365	{"nvme", 3, 1, 0, 0},
366	{"nvme", 3, 2, 0, 0},
367	{"nvme", 3, 3, 0, 0},
368	{"nvme", 3, 4, 0, 0},
369	{"nvme", 3, 5, 0, 0},
370	{"nvme", 3, 6, 0, 0},
371	{"virtio-scsi", 3, 7, 0, 0},
372	{"virtio-scsi", 3, 8, 0, 0},
373	{"virtio-scsi", 3, 9, 0, 0},
374	{"virtio-scsi", 3, 10, 0, 0},
375	{"virtio-scsi", 3, 11, 0, 0},
376	{"virtio-scsi", 3, 12, 0, 0},
377	{"virtio-scsi", 3, 13, 0, 0},
378
379	{ NULL, -1, -1, -1, 0}
380	};
381
382
383	#ifdef VBOX_WITH_IOMMU_AMD
384	/*
385	* AMD IOMMU and LSI Logic controller rules.
386	*
387	* Since the PCI slot (BDF=00:20.0) of the LSI Logic controller
388	* conflicts with the SB I/O APIC, we assign the LSI Logic controller
389	* to device number 23 when the VM is configured for an AMD IOMMU.
390	*/
391	static const DeviceAssignmentRule g_aIch9IommuAmdRules[] =
392	{
393	/* AMD IOMMU. */
394	{"iommu-amd", 0, 0, 0, 0},
395	/* AMD IOMMU: Reserved for southbridge I/O APIC. */
396	{"sb-ioapic", 0, 20, 0, 0},
397
398	/* Storage controller */
399	{"lsilogic", 0, 23, 0, 1},
400	{ NULL, -1, -1, -1, 0}
401	};
402	#endif
403
404	#ifdef VBOX_WITH_IOMMU_INTEL
405	/*
406	* Intel IOMMU.
407	* The VT-d misc, address remapping, system management device is
408	* located at BDF 0:5:0 on real hardware but we use 0:1:0 since that
409	* slot isn't used for anything else.
410	*
411	* While we could place the I/O APIC anywhere, we keep it consistent
412	* with the AMD IOMMU and we assign the LSI Logic controller to
413	* device number 23 (and I/O APIC at device 20).
414	*/
415	static const DeviceAssignmentRule g_aIch9IommuIntelRules[] =
416	{
417	/* Intel IOMMU. */
418	{"iommu-intel", 0, 1, 0, 0},
419	/* Intel IOMMU: Reserved for I/O APIC. */
420	{"sb-ioapic", 0, 20, 0, 0},
421
422	/* Storage controller */
423	{"lsilogic", 0, 23, 0, 1},
424	{ NULL, -1, -1, -1, 0}
425	};
426	#endif
427
428	/* LSI Logic Controller. */
429	static const DeviceAssignmentRule g_aIch9LsiRules[] =
430	{
431	/* Storage controller */
432	{"lsilogic", 0, 20, 0, 1},
433	{ NULL, -1, -1, -1, 0}
434	};
435
436	/* Aliasing rules */
437	static const DeviceAliasRule g_aDeviceAliases[] =
438	{
439	{"e1000", "nic"},
440	{"pcnet", "nic"},
441	{"virtio-net", "nic"},
442	{"ahci", "storage"},
443	{"lsilogic", "storage"},
444	{"buslogic", "storage"},
445	{"lsilogicsas", "storage"},
446	{"nvme", "storage"},
447	{"virtio-scsi", "storage"}
448	};
449
450
451
452	/**
453	* Bus assignment manage state data.
454	* @internal
455	*/
456	struct BusAssignmentManager::State
457	{
458	struct PCIDeviceRecord
459	{
460	char szDevName[32];
461	PCIBusAddress HostAddress;
462
463	PCIDeviceRecord(const char *pszName, PCIBusAddress aHostAddress)
464	{
465	RTStrCopy(this->szDevName, sizeof(szDevName), pszName);
466	this->HostAddress = aHostAddress;
467	}
468
469	PCIDeviceRecord(const char *pszName)
470	{
471	RTStrCopy(this->szDevName, sizeof(szDevName), pszName);
472	}
473
474	bool operator<(const PCIDeviceRecord &a) const
475	{
476	return RTStrNCmp(szDevName, a.szDevName, sizeof(szDevName)) < 0;
477	}
478
479	bool operator==(const PCIDeviceRecord &a) const
480	{
481	return RTStrNCmp(szDevName, a.szDevName, sizeof(szDevName)) == 0;
482	}
483	};
484
485	typedef std::map<PCIBusAddress,PCIDeviceRecord> PCIMap;
486	typedef std::vector<PCIBusAddress> PCIAddrList;
487	typedef std::vector<const DeviceAssignmentRule *> PCIRulesList;
488	typedef std::map<PCIDeviceRecord,PCIAddrList> ReversePCIMap;
489
490	volatile int32_t cRefCnt;
491	ChipsetType_T mChipsetType;
492	const char * mpszBridgeName;
493	IommuType_T mIommuType;
494	PCIMap mPCIMap;
495	ReversePCIMap mReversePCIMap;
496	PCVMMR3VTABLE mpVMM;
497
498	State()
499	: cRefCnt(1), mChipsetType(ChipsetType_Null), mpszBridgeName("unknownbridge"), mpVMM(NULL)
500	{}
501	~State()
502	{}
503
504	HRESULT init(PCVMMR3VTABLE pVMM, ChipsetType_T chipsetType, IommuType_T iommuType);
505
506	HRESULT record(const char *pszName, PCIBusAddress& GuestAddress, PCIBusAddress HostAddress);
507	HRESULT autoAssign(const char *pszName, PCIBusAddress& Address);
508	bool checkAvailable(PCIBusAddress& Address);
509	bool findPCIAddress(const char *pszDevName, int iInstance, PCIBusAddress& Address);
510
511	const char findAlias(const char pszName);
512	void addMatchingRules(const char *pszName, PCIRulesList& aList);
513	void listAttachedPCIDevices(std::vector<PCIDeviceInfo> &aAttached);
514	};
515
516
517	HRESULT BusAssignmentManager::State::init(PCVMMR3VTABLE pVMM, ChipsetType_T chipsetType, IommuType_T iommuType)
518	{
519	mpVMM = pVMM;
520
521	if (iommuType != IommuType_None)
522	{
523	#if defined(VBOX_WITH_IOMMU_AMD) && defined(VBOX_WITH_IOMMU_INTEL)
524	Assert(iommuType == IommuType_AMD \|\| iommuType == IommuType_Intel);
525	#elif defined(VBOX_WITH_IOMMU_AMD)
526	Assert(iommuType == IommuType_AMD);
527	#elif defined(VBOX_WITH_IOMMU_INTEL)
528	Assert(iommuType == IommuType_Intel);
529	#endif
530	}
531
532	mChipsetType = chipsetType;
533	mIommuType = iommuType;
534	switch (chipsetType)
535	{
536	case ChipsetType_PIIX3:
537	mpszBridgeName = "pcibridge";
538	break;
539	case ChipsetType_ICH9:
540	mpszBridgeName = "ich9pcibridge";
541	break;
542	case ChipsetType_ARMv8Virtual:
543	mpszBridgeName = "pci-generic-ecam-bridge";
544	break;
545	default:
546	mpszBridgeName = "unknownbridge";
547	AssertFailed();
548	break;
549	}
550	return S_OK;
551	}
552
553	HRESULT BusAssignmentManager::State::record(const char *pszName, PCIBusAddress& Address, PCIBusAddress HostAddress)
554	{
555	PCIDeviceRecord devRec(pszName, HostAddress);
556
557	/* Remember address -> device mapping */
558	mPCIMap.insert(PCIMap::value_type(Address, devRec));
559
560	ReversePCIMap::iterator it = mReversePCIMap.find(devRec);
561	if (it == mReversePCIMap.end())
562	{
563	mReversePCIMap.insert(ReversePCIMap::value_type(devRec, PCIAddrList()));
564	it = mReversePCIMap.find(devRec);
565	}
566
567	/* Remember device name -> addresses mapping */
568	it->second.push_back(Address);
569
570	return S_OK;
571	}
572
573	bool BusAssignmentManager::State::findPCIAddress(const char *pszDevName, int iInstance, PCIBusAddress& Address)
574	{
575	PCIDeviceRecord devRec(pszDevName);
576
577	ReversePCIMap::iterator it = mReversePCIMap.find(devRec);
578	if (it == mReversePCIMap.end())
579	return false;
580
581	if (iInstance >= (int)it->second.size())
582	return false;
583
584	Address = it->second[iInstance];
585	return true;
586	}
587
588	void BusAssignmentManager::State::addMatchingRules(const char *pszName, PCIRulesList& aList)
589	{
590	size_t iRuleset, iRule;
591	const DeviceAssignmentRule *aArrays[3] = {g_aGenericRules, NULL, NULL};
592
593	switch (mChipsetType)
594	{
595	case ChipsetType_PIIX3:
596	aArrays[1] = g_aPiix3Rules;
597	break;
598	case ChipsetType_ICH9:
599	{
600	aArrays[1] = g_aIch9Rules;
601	#ifdef VBOX_WITH_IOMMU_AMD
602	if (mIommuType == IommuType_AMD)
603	aArrays[2] = g_aIch9IommuAmdRules;
604	else
605	#endif
606	#ifdef VBOX_WITH_IOMMU_INTEL
607	if (mIommuType == IommuType_Intel)
608	aArrays[2] = g_aIch9IommuIntelRules;
609	else
610	#endif
611	{
612	aArrays[2] = g_aIch9LsiRules;
613	}
614	break;
615	}
616	case ChipsetType_ARMv8Virtual:
617	aArrays[0] = g_aArmv8Rules;
618	break;
619	default:
620	AssertFailed();
621	break;
622	}
623
624	for (iRuleset = 0; iRuleset < RT_ELEMENTS(aArrays); iRuleset++)
625	{
626	if (aArrays[iRuleset] == NULL)
627	continue;
628
629	for (iRule = 0; aArrays[iRuleset][iRule].pszName != NULL; iRule++)
630	{
631	if (RTStrCmp(pszName, aArrays[iRuleset][iRule].pszName) == 0)
632	aList.push_back(&aArrays[iRuleset][iRule]);
633	}
634	}
635	}
636
637	const char BusAssignmentManager::State::findAlias(const char pszDev)
638	{
639	for (size_t iAlias = 0; iAlias < RT_ELEMENTS(g_aDeviceAliases); iAlias++)
640	{
641	if (strcmp(pszDev, g_aDeviceAliases[iAlias].pszDevName) == 0)
642	return g_aDeviceAliases[iAlias].pszDevAlias;
643	}
644	return NULL;
645	}
646
647	static bool RuleComparator(const DeviceAssignmentRule r1, const DeviceAssignmentRule r2)
648	{
649	return (r1->iPriority > r2->iPriority);
650	}
651
652	HRESULT BusAssignmentManager::State::autoAssign(const char *pszName, PCIBusAddress& Address)
653	{
654	PCIRulesList matchingRules;
655
656	addMatchingRules(pszName, matchingRules);
657	const char *pszAlias = findAlias(pszName);
658	if (pszAlias)
659	addMatchingRules(pszAlias, matchingRules);
660
661	AssertMsg(matchingRules.size() > 0, ("No rule for %s(%s)\n", pszName, pszAlias));
662
663	stable_sort(matchingRules.begin(), matchingRules.end(), RuleComparator);
664
665	for (size_t iRule = 0; iRule < matchingRules.size(); iRule++)
666	{
667	const DeviceAssignmentRule *rule = matchingRules[iRule];
668
669	Address.miBus = rule->iBus;
670	Address.miDevice = rule->iDevice;
671	Address.miFn = rule->iFn;
672
673	if (checkAvailable(Address))
674	return S_OK;
675	}
676	AssertLogRelMsgFailed(("BusAssignmentManager: All possible candidate positions for %s exhausted\n", pszName));
677
678	return E_INVALIDARG;
679	}
680
681	bool BusAssignmentManager::State::checkAvailable(PCIBusAddress& Address)
682	{
683	PCIMap::const_iterator it = mPCIMap.find(Address);
684
685	return (it == mPCIMap.end());
686	}
687
688	void BusAssignmentManager::State::listAttachedPCIDevices(std::vector<PCIDeviceInfo> &aAttached)
689	{
690	aAttached.resize(mPCIMap.size());
691
692	size_t i = 0;
693	PCIDeviceInfo dev;
694	for (PCIMap::const_iterator it = mPCIMap.begin(); it != mPCIMap.end(); ++it, ++i)
695	{
696	dev.strDeviceName = it->second.szDevName;
697	dev.guestAddress = it->first;
698	dev.hostAddress = it->second.HostAddress;
699	aAttached[i] = dev;
700	}
701	}
702
703	BusAssignmentManager::BusAssignmentManager()
704	: pState(NULL)
705	{
706	pState = new State();
707	Assert(pState);
708	}
709
710	BusAssignmentManager::~BusAssignmentManager()
711	{
712	if (pState)
713	{
714	delete pState;
715	pState = NULL;
716	}
717	}
718
719	BusAssignmentManager *BusAssignmentManager::createInstance(PCVMMR3VTABLE pVMM, ChipsetType_T chipsetType, IommuType_T iommuType)
720	{
721	BusAssignmentManager *pInstance = new BusAssignmentManager();
722	pInstance->pState->init(pVMM, chipsetType, iommuType);
723	Assert(pInstance);
724	return pInstance;
725	}
726
727	void BusAssignmentManager::AddRef()
728	{
729	ASMAtomicIncS32(&pState->cRefCnt);
730	}
731
732	void BusAssignmentManager::Release()
733	{
734	if (ASMAtomicDecS32(&pState->cRefCnt) == 0)
735	delete this;
736	}
737
738	DECLINLINE(HRESULT) InsertConfigInteger(PCVMMR3VTABLE pVMM, PCFGMNODE pCfg, const char *pszName, uint64_t u64)
739	{
740	int vrc = pVMM->pfnCFGMR3InsertInteger(pCfg, pszName, u64);
741	if (RT_FAILURE(vrc))
742	return E_INVALIDARG;
743
744	return S_OK;
745	}
746
747	DECLINLINE(HRESULT) InsertConfigNode(PCVMMR3VTABLE pVMM, PCFGMNODE pNode, const char pcszName, PCFGMNODE ppChild)
748	{
749	int vrc = pVMM->pfnCFGMR3InsertNode(pNode, pcszName, ppChild);
750	if (RT_FAILURE(vrc))
751	return E_INVALIDARG;
752
753	return S_OK;
754	}
755
756
757	HRESULT BusAssignmentManager::assignPCIDeviceImpl(const char *pszDevName,
758	PCFGMNODE pCfg,
759	PCIBusAddress& GuestAddress,
760	PCIBusAddress HostAddress,
761	bool fGuestAddressRequired)
762	{
763	HRESULT hrc = S_OK;
764
765	if (!GuestAddress.valid())
766	hrc = pState->autoAssign(pszDevName, GuestAddress);
767	else
768	{
769	bool fAvailable = pState->checkAvailable(GuestAddress);
770
771	if (!fAvailable)
772	{
773	if (fGuestAddressRequired)
774	hrc = E_ACCESSDENIED;
775	else
776	hrc = pState->autoAssign(pszDevName, GuestAddress);
777	}
778	}
779
780	if (FAILED(hrc))
781	return hrc;
782
783	Assert(GuestAddress.valid() && pState->checkAvailable(GuestAddress));
784
785	hrc = pState->record(pszDevName, GuestAddress, HostAddress);
786	if (FAILED(hrc))
787	return hrc;
788
789	PCVMMR3VTABLE const pVMM = pState->mpVMM;
790	if (pCfg)
791	{
792	hrc = InsertConfigInteger(pVMM, pCfg, "PCIBusNo", GuestAddress.miBus);
793	if (FAILED(hrc))
794	return hrc;
795	hrc = InsertConfigInteger(pVMM, pCfg, "PCIDeviceNo", GuestAddress.miDevice);
796	if (FAILED(hrc))
797	return hrc;
798	hrc = InsertConfigInteger(pVMM, pCfg, "PCIFunctionNo", GuestAddress.miFn);
799	if (FAILED(hrc))
800	return hrc;
801	}
802
803	/* Check if the bus is still unknown, i.e. the bridge to it is missing */
804	if ( GuestAddress.miBus > 0
805	&& !hasPCIDevice(pState->mpszBridgeName, GuestAddress.miBus - 1))
806	{
807	PCFGMNODE pDevices = pVMM->pfnCFGMR3GetParent(pVMM->pfnCFGMR3GetParent(pCfg));
808	AssertLogRelMsgReturn(pDevices, ("BusAssignmentManager: cannot find base device configuration\n"), E_UNEXPECTED);
809	PCFGMNODE pBridges = pVMM->pfnCFGMR3GetChild(pDevices, pState->mpszBridgeName);
810	AssertLogRelMsgReturn(pBridges, ("BusAssignmentManager: cannot find bridge configuration base\n"), E_UNEXPECTED);
811
812	/* Device should be on a not yet existing bus, add it automatically */
813	for (int iBridge = 0; iBridge <= GuestAddress.miBus - 1; iBridge++)
814	{
815	if (!hasPCIDevice(pState->mpszBridgeName, iBridge))
816	{
817	PCIBusAddress BridgeGuestAddress;
818	hrc = pState->autoAssign(pState->mpszBridgeName, BridgeGuestAddress);
819	if (FAILED(hrc))
820	return hrc;
821	if (BridgeGuestAddress.miBus > iBridge)
822	AssertLogRelMsgFailedReturn(("BusAssignmentManager: cannot create bridge for bus %i because the possible parent bus positions are exhausted\n", iBridge + 1), E_UNEXPECTED);
823
824	PCFGMNODE pInst;
825	InsertConfigNode(pVMM, pBridges, Utf8StrFmt("%d", iBridge).c_str(), &pInst);
826	InsertConfigInteger(pVMM, pInst, "Trusted", 1);
827	hrc = assignPCIDevice(pState->mpszBridgeName, pInst);
828	if (FAILED(hrc))
829	return hrc;
830	}
831	}
832	}
833
834	return S_OK;
835	}
836
837
838	bool BusAssignmentManager::findPCIAddress(const char *pszDevName, int iInstance, PCIBusAddress& Address)
839	{
840	return pState->findPCIAddress(pszDevName, iInstance, Address);
841	}
842	void BusAssignmentManager::listAttachedPCIDevices(std::vector<PCIDeviceInfo> &aAttached)
843	{
844	pState->listAttachedPCIDevices(aAttached);
845	}

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source: vbox/trunk/src/VBox/Main/src-client/BusAssignmentManager.cpp

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