DevPciIch9.cpp@ 99404

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1	/* $Id: DevPciIch9.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2	/** @file
3	* DevPCI - ICH9 southbridge PCI bus emulation device.
4	*
5	* @remarks We'll be slowly promoting the code in this file to common PCI bus
6	* code. Function without 'static' and using 'devpci' as prefix is
7	* also used by DevPCI.cpp and have a prototype in DevPciInternal.h.
8	*
9	* For the time being the DevPciMerge1.cpp.h file will remain separate,
10	* due to 5.1. We can merge it into this one later in the dev cycle.
11	*
12	* DO NOT use the PDMPciDev* or PCIDev* family of functions in this
13	* file except in the two callbacks for config space access (and the
14	* functions which are used exclusively by that code) and the two
15	* device constructors when setting up the config space for the
16	* bridges. Everything else need extremely careful review. Using
17	* them elsewhere (especially in the init code) causes weird failures
18	* with PCI passthrough, as it would only update the array of
19	* (emulated) config space, but not talk to the actual device (needs
20	* invoking the respective callback).
21	*/
22
23	/*
24	* Copyright (C) 2010-2023 Oracle and/or its affiliates.
25	*
26	* This file is part of VirtualBox base platform packages, as
27	* available from https://www.virtualbox.org.
28	*
29	* This program is free software; you can redistribute it and/or
30	* modify it under the terms of the GNU General Public License
31	* as published by the Free Software Foundation, in version 3 of the
32	* License.
33	*
34	* This program is distributed in the hope that it will be useful, but
35	* WITHOUT ANY WARRANTY; without even the implied warranty of
36	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
37	* General Public License for more details.
38	*
39	* You should have received a copy of the GNU General Public License
40	* along with this program; if not, see <https://www.gnu.org/licenses>.
41	*
42	* SPDX-License-Identifier: GPL-3.0-only
43	*/
44
45
46	/*********************************************************************************************************************************
47	* Header Files *
48	*********************************************************************************************************************************/
49	#define LOG_GROUP LOG_GROUP_DEV_PCI
50	#define PDMPCIDEV_INCLUDE_PRIVATE /* Hack to get pdmpcidevint.h included at the right point. */
51	#include <VBox/vmm/pdmpcidev.h>
52
53	#include <VBox/AssertGuest.h>
54	#include <VBox/msi.h>
55	#ifdef VBOX_WITH_IOMMU_AMD
56	# include <VBox/iommu-amd.h>
57	#endif
58	#include <VBox/vmm/pdmdev.h>
59	#include <VBox/vmm/mm.h>
60	#include <iprt/asm.h>
61	#include <iprt/assert.h>
62	#include <iprt/string.h>
63	#ifdef IN_RING3
64	# include <iprt/mem.h>
65	# include <iprt/uuid.h>
66	#endif
67
68	#include "PciInline.h"
69	#include "VBoxDD.h"
70	#include "MsiCommon.h"
71	#include "DevPciInternal.h"
72	#ifdef VBOX_WITH_IOMMU_AMD
73	# include "../Bus/DevIommuAmd.h"
74	#endif
75
76
77	/*********************************************************************************************************************************
78	* Structures and Typedefs *
79	*********************************************************************************************************************************/
80	/**
81	* PCI configuration space address.
82	*/
83	typedef struct
84	{
85	uint8_t iBus;
86	uint8_t iDeviceFunc;
87	uint16_t iRegister;
88	} PciAddress;
89
90
91	/*********************************************************************************************************************************
92	* Defined Constants And Macros *
93	*********************************************************************************************************************************/
94	/** Saved state version of the ICH9 PCI bus device. */
95	#define VBOX_ICH9PCI_SAVED_STATE_VERSION VBOX_ICH9PCI_SAVED_STATE_VERSION_4KB_CFG_SPACE
96	/** 4KB config space */
97	#define VBOX_ICH9PCI_SAVED_STATE_VERSION_4KB_CFG_SPACE 4
98	/** Adds I/O region types and sizes for dealing changes in resource regions. */
99	#define VBOX_ICH9PCI_SAVED_STATE_VERSION_REGION_SIZES 3
100	/** This appears to be the first state we need to care about. */
101	#define VBOX_ICH9PCI_SAVED_STATE_VERSION_MSI 2
102	/** This is apparently not supported or has a grossly incomplete state, juding
103	* from hints in the code. */
104	#define VBOX_ICH9PCI_SAVED_STATE_VERSION_NOMSI 1
105
106	/** Invalid PCI region mapping address. */
107	#define INVALID_PCI_ADDRESS UINT32_MAX
108
109
110	/*********************************************************************************************************************************
111	* Internal Functions *
112	*********************************************************************************************************************************/
113	/* Prototypes */
114	static void ich9pciSetIrqInternal(PPDMDEVINS pDevIns, PDEVPCIROOT pPciRoot, PDEVPCIBUSCC pBusCC,
115	uint8_t uDevFn, PPDMPCIDEV pPciDev, int iIrq, int iLevel, uint32_t uTagSrc);
116	#ifdef IN_RING3
117	static int ich9pciFakePCIBIOS(PPDMDEVINS pDevIns);
118	DECLINLINE(PPDMPCIDEV) ich9pciFindBridge(PDEVPCIBUS pBus, uint8_t uBus);
119	static void ich9pciBiosInitAllDevicesOnBus(PPDMDEVINS pDevIns, PDEVPCIROOT pPciRoot, PDEVPCIBUS pBus);
120	static bool ich9pciBiosInitAllDevicesPrefetchableOnBus(PPDMDEVINS pDevIns, PDEVPCIROOT pPciRoot, PDEVPCIBUS pBus, bool fUse64Bit, bool fDryrun);
121	#endif
122
123
124	/**
125	* See 7.2.2. PCI Express Enhanced Configuration Mechanism for details of address
126	* mapping, we take n=6 approach
127	*/
128	DECLINLINE(void) ich9pciPhysToPciAddr(PDEVPCIROOT pPciRoot, RTGCPHYS off, PciAddress *pPciAddr)
129	{
130	NOREF(pPciRoot);
131	pPciAddr->iBus = (off >> 20) & ((1<<6) - 1);
132	pPciAddr->iDeviceFunc = (off >> 12) & ((1<<(5+3)) - 1); // 5 bits - device, 3 bits - function
133	pPciAddr->iRegister = (off >> 0) & ((1<<(6+4+2)) - 1); // 6 bits - register, 4 bits - extended register, 2 bits -Byte Enable
134	RT_UNTRUSTED_VALIDATED_FENCE(); /* paranoia */
135	}
136
137	DECLINLINE(void) ich9pciStateToPciAddr(PDEVPCIROOT pPciRoot, RTGCPHYS addr, PciAddress *pPciAddr)
138	{
139	pPciAddr->iBus = (pPciRoot->uConfigReg >> 16) & 0xff;
140	pPciAddr->iDeviceFunc = (pPciRoot->uConfigReg >> 8) & 0xff;
141	pPciAddr->iRegister = (pPciRoot->uConfigReg & 0xfc) \| (addr & 3);
142	RT_UNTRUSTED_VALIDATED_FENCE(); /* paranoia */
143	}
144
145	static DECLCALLBACK(void) ich9pciSetIrq(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev, int iIrq, int iLevel, uint32_t uTagSrc)
146	{
147	LogFlowFunc(("invoked by %p/%d: iIrq=%d iLevel=%d uTagSrc=%#x\n", pDevIns, pDevIns->iInstance, iIrq, iLevel, uTagSrc));
148	ich9pciSetIrqInternal(pDevIns, PDMINS_2_DATA(pDevIns, PDEVPCIROOT), PDMINS_2_DATA_CC(pDevIns, PDEVPCIBUSCC),
149	pPciDev->uDevFn, pPciDev, iIrq, iLevel, uTagSrc);
150	}
151
152	/**
153	* Worker for ich9pcibridgeSetIrq and pcibridgeSetIrq that walks up to the root
154	* bridges and permutates iIrq accordingly.
155	*
156	* See ich9pciBiosInitAllDevicesOnBus for corresponding configuration code.
157	*/
158	DECLHIDDEN(PPDMDEVINS) devpcibridgeCommonSetIrqRootWalk(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev, int iIrq,
159	PDEVPCIBUS ppBus, uint8_t puDevFnBridge, int *piIrqPinBridge)
160	{
161	PDEVPCIBUSCC const pBridgeBusCC = PDMINS_2_DATA_CC(pDevIns, PDEVPCIBUSCC); /* For keep using our own pcihlp. */
162	PPDMDEVINS const pBridgeDevIns = pDevIns; /* ditto */
163
164	PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS);
165	PPDMDEVINS pDevInsBus;
166	PPDMPCIDEV pPciDevBus = pDevIns->apPciDevs[0];
167	uint8_t uDevFnBridge = pPciDevBus->uDevFn;
168	int iIrqPinBridge = ((pPciDev->uDevFn >> 3) + iIrq) & 3;
169	uint64_t bmSeen[256/64] = { 0, 0, 0, 0 };
170	AssertCompile(sizeof(pPciDevBus->Int.s.idxPdmBus) == 1);
171	ASMBitSet(bmSeen, pPciDevBus->Int.s.idxPdmBus);
172
173	/* Walk the chain until we reach the host bus. */
174	Assert(pBus->iBus != 0);
175	for (;;)
176	{
177	/* Get the parent. */
178	pDevInsBus = pBridgeBusCC->CTX_SUFF(pPciHlp)->pfnGetBusByNo(pBridgeDevIns, pPciDevBus->Int.s.idxPdmBus);
179	AssertLogRelReturn(pDevInsBus, NULL);
180
181	pBus = PDMINS_2_DATA(pDevInsBus, PDEVPCIBUS);
182	pPciDevBus = pDevInsBus->apPciDevs[0];
183	if (pBus->iBus == 0)
184	{
185	*ppBus = pBus;
186	*puDevFnBridge = uDevFnBridge;
187	*piIrqPinBridge = iIrqPinBridge;
188	return pDevInsBus;
189	}
190
191	uDevFnBridge = pPciDevBus->uDevFn;
192	iIrqPinBridge = ((uDevFnBridge >> 3) + iIrqPinBridge) & 3;
193
194	/* Make sure that we cannot end up in a loop here: */
195	AssertCompile(sizeof(pPciDevBus->Int.s.idxPdmBus) == 1);
196	AssertMsgReturn(ASMBitTestAndSet(bmSeen, pPciDevBus->Int.s.idxPdmBus),
197	("idxPdmBus=%u\n", pPciDevBus->Int.s.idxPdmBus),
198	NULL);
199	}
200
201	}
202
203	static DECLCALLBACK(void) ich9pcibridgeSetIrq(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev, int iIrq, int iLevel, uint32_t uTagSrc)
204	{
205	/*
206	* The PCI-to-PCI bridge specification defines how the interrupt pins
207	* are routed from the secondary to the primary bus (see chapter 9).
208	* iIrq gives the interrupt pin the pci device asserted.
209	* We change iIrq here according to the spec and call the SetIrq function
210	* of our parent passing the device which asserted the interrupt instead of the device of the bridge.
211	*
212	* See ich9pciBiosInitAllDevicesOnBus for corresponding configuration code.
213	*/
214	PDEVPCIBUS pBus;
215	uint8_t uDevFnBridge;
216	int iIrqPinBridge;
217	PPDMDEVINS pDevInsBus = devpcibridgeCommonSetIrqRootWalk(pDevIns, pPciDev, iIrq, &pBus, &uDevFnBridge, &iIrqPinBridge);
218	AssertReturnVoid(pDevInsBus);
219	AssertMsg(pBus->iBus == 0, ("This is not the host pci bus iBus=%d\n", pBus->iBus));
220	Assert(pDevInsBus->pReg == &g_DevicePciIch9); /* ASSUMPTION: Same style root bus. Need callback interface to mix types. */
221
222	/*
223	* For MSI/MSI-X enabled devices the iIrq doesn't denote the pin but rather a vector which is completely
224	* orthogonal to the pin based approach. The vector is not subject to the pin based routing with PCI bridges.
225	*/
226	int iIrqPinVector = iIrqPinBridge;
227	if ( MsiIsEnabled(pPciDev)
228	\|\| MsixIsEnabled(pPciDev))
229	iIrqPinVector = iIrq;
230	ich9pciSetIrqInternal(pDevInsBus, DEVPCIBUS_2_DEVPCIROOT(pBus), PDMINS_2_DATA_CC(pDevInsBus, PDEVPCIBUSCC),
231	uDevFnBridge, pPciDev, iIrqPinVector, iLevel, uTagSrc);
232	}
233
234	#ifdef IN_RING3
235
236	/**
237	* @callback_method_impl{FNIOMIOPORTNEWOUT,
238	* Port I/O Handler for Fake PCI BIOS trigger OUT operations at 0410h.}
239	*/
240	static DECLCALLBACK(VBOXSTRICTRC)
241	ich9pciR3IOPortMagicPCIWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t u32, unsigned cb)
242	{
243	Assert(offPort == 0); RT_NOREF2(pvUser, offPort);
244	LogFlowFunc(("offPort=%#x u32=%#x cb=%d\n", offPort, u32, cb));
245	if (cb == 4)
246	{
247	if (u32 == UINT32_C(19200509)) // Richard Adams
248	{
249	int rc = ich9pciFakePCIBIOS(pDevIns);
250	AssertRC(rc);
251	}
252	}
253
254	return VINF_SUCCESS;
255	}
256
257
258	/**
259	* @callback_method_impl{FNIOMIOPORTNEWIN,
260	* Port I/O Handler for Fake PCI BIOS trigger IN operations at 0410h.}
261	*/
262	static DECLCALLBACK(VBOXSTRICTRC)
263	ich9pciR3IOPortMagicPCIRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT offPort, uint32_t pu32, unsigned cb)
264	{
265	Assert(offPort == 0); RT_NOREF5(pDevIns, pvUser, offPort, pu32, cb);
266	LogFunc(("offPort=%#x cb=%d VERR_IOM_IOPORT_UNUSED\n", offPort, cb));
267	return VERR_IOM_IOPORT_UNUSED;
268	}
269
270	#endif /* IN_RING3 */
271
272	/**
273	* @callback_method_impl{FNIOMIOPORTNEWOUT,
274	* Port I/O Handler for PCI address OUT operations.}
275	*
276	* Emulates writes to Configuration Address Port at 0CF8h for Configuration
277	* Mechanism \#1.
278	*/
279	static DECLCALLBACK(VBOXSTRICTRC)
280	ich9pciIOPortAddressWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t u32, unsigned cb)
281	{
282	LogFlowFunc(("offPort=%#x u32=%#x cb=%d\n", offPort, u32, cb));
283	Assert(offPort == 0); RT_NOREF2(offPort, pvUser);
284	if (cb == 4)
285	{
286	PDEVPCIROOT pThis = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
287
288	/*
289	* bits [1:0] are hard-wired, read-only and must return zeroes
290	* when read.
291	*/
292	u32 &= ~3;
293
294	PCI_LOCK_RET(pDevIns, VINF_IOM_R3_IOPORT_WRITE);
295	pThis->uConfigReg = u32;
296	PCI_UNLOCK(pDevIns);
297	}
298
299	return VINF_SUCCESS;
300	}
301
302
303	/**
304	* @callback_method_impl{FNIOMIOPORTNEWIN,
305	* Port I/O Handler for PCI data IN operations.}
306	*
307	* Emulates reads from Configuration Address Port at 0CF8h for Configuration
308	* Mechanism \#1.
309	*/
310	static DECLCALLBACK(VBOXSTRICTRC)
311	ich9pciIOPortAddressRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT offPort, uint32_t pu32, unsigned cb)
312	{
313	Assert(offPort == 0); RT_NOREF2(offPort, pvUser);
314	if (cb == 4)
315	{
316	PDEVPCIROOT pThis = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
317
318	PCI_LOCK_RET(pDevIns, VINF_IOM_R3_IOPORT_READ);
319	*pu32 = pThis->uConfigReg;
320	PCI_UNLOCK(pDevIns);
321
322	LogFlowFunc(("offPort=%#x cb=%d -> %#x\n", offPort, cb, *pu32));
323	return VINF_SUCCESS;
324	}
325
326	LogFunc(("offPort=%#x cb=%d VERR_IOM_IOPORT_UNUSED\n", offPort, cb));
327	return VERR_IOM_IOPORT_UNUSED;
328	}
329
330
331	/**
332	* Perform configuration space write.
333	*/
334	static VBOXSTRICTRC ich9pciConfigWrite(PPDMDEVINS pDevIns, PDEVPCIROOT pPciRoot, PciAddress const *pPciAddr,
335	uint32_t u32Value, int cb, int rcReschedule)
336	{
337	VBOXSTRICTRC rcStrict = VINF_SUCCESS;
338
339	if (pPciAddr->iBus != 0) /* forward to subordinate bus */
340	{
341	if (pPciRoot->PciBus.cBridges)
342	{
343	#ifdef IN_RING3 /** @todo do lookup in R0/RC too! r=klaus don't think that it can work, since the config space access callback only works in R3 */
344	PPDMPCIDEV pBridgeDevice = ich9pciFindBridge(&pPciRoot->PciBus, pPciAddr->iBus);
345	if (pBridgeDevice)
346	{
347	AssertPtr(pBridgeDevice->Int.s.pfnBridgeConfigWrite);
348	rcStrict = pBridgeDevice->Int.s.pfnBridgeConfigWrite(pBridgeDevice->Int.s.CTX_SUFF(pDevIns), pPciAddr->iBus,
349	pPciAddr->iDeviceFunc, pPciAddr->iRegister, cb, u32Value);
350	}
351	#else
352	rcStrict = rcReschedule;
353	#endif
354	}
355	}
356	else /* forward to directly connected device */
357	{
358	R3PTRTYPE(PDMPCIDEV *) pPciDev = pPciRoot->PciBus.apDevices[pPciAddr->iDeviceFunc];
359	if (pPciDev)
360	{
361	#ifdef IN_RING3
362	rcStrict = VINF_PDM_PCI_DO_DEFAULT;
363	if (pPciDev->Int.s.pfnConfigWrite)
364	rcStrict = pPciDev->Int.s.pfnConfigWrite(pPciDev->Int.s.CTX_SUFF(pDevIns), pPciDev,
365	pPciAddr->iRegister, cb, u32Value);
366	if (rcStrict == VINF_PDM_PCI_DO_DEFAULT)
367	rcStrict = devpciR3CommonConfigWriteWorker(pDevIns, PDMINS_2_DATA_CC(pDevIns, PDEVPCIBUSCC),
368	pPciDev, pPciAddr->iRegister, cb, u32Value);
369	RT_NOREF(rcReschedule);
370	#else
371	rcStrict = rcReschedule;
372	RT_NOREF(pDevIns, u32Value, cb);
373	#endif
374	}
375	}
376
377	Log2Func(("%02x:%02x.%u reg %x(%u) %x %Rrc\n", pPciAddr->iBus, pPciAddr->iDeviceFunc >> 3, pPciAddr->iDeviceFunc & 0x7,
378	pPciAddr->iRegister, cb, u32Value, VBOXSTRICTRC_VAL(rcStrict)));
379	return rcStrict;
380	}
381
382
383	/**
384	* @callback_method_impl{FNIOMIOPORTNEWOUT,
385	* Port I/O Handler for PCI data OUT operations.}
386	*
387	* Emulates writes to Configuration Data Port at 0CFCh for Configuration
388	* Mechanism \#1.
389	*/
390	static DECLCALLBACK(VBOXSTRICTRC)
391	ich9pciIOPortDataWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t u32, unsigned cb)
392	{
393	PDEVPCIROOT pThis = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
394	LogFlowFunc(("offPort=%u u32=%#x cb=%d (config=%#10x)\n", offPort, u32, cb, pThis->uConfigReg));
395	Assert(offPort < 4); NOREF(pvUser);
396
397	VBOXSTRICTRC rcStrict = VINF_SUCCESS;
398	if (!(offPort % cb))
399	{
400	PCI_LOCK_RET(pDevIns, VINF_IOM_R3_IOPORT_WRITE);
401
402	if (pThis->uConfigReg & (1 << 31))
403	{
404
405	/* Decode target device from Configuration Address Port */
406	PciAddress aPciAddr;
407	ich9pciStateToPciAddr(pThis, offPort, &aPciAddr);
408
409	/* Perform configuration space write */
410	rcStrict = ich9pciConfigWrite(pDevIns, pThis, &aPciAddr, u32, cb, VINF_IOM_R3_IOPORT_WRITE);
411	}
412
413	PCI_UNLOCK(pDevIns);
414	}
415	else
416	AssertMsgFailed(("Unaligned write to offPort=%u u32=%#x cb=%d\n", offPort, u32, cb));
417
418	return rcStrict;
419	}
420
421
422	/**
423	* Perform configuration space read.
424	*/
425	static VBOXSTRICTRC ich9pciConfigRead(PDEVPCIROOT pPciRoot, PciAddress* pPciAddr, int cb, uint32_t *pu32Value, int rcReschedule)
426	{
427	VBOXSTRICTRC rcStrict = VINF_SUCCESS;
428	#ifdef IN_RING3
429	NOREF(rcReschedule);
430	#else
431	NOREF(cb);
432	#endif
433
434	if (pPciAddr->iBus != 0) /* forward to subordinate bus */
435	{
436	if (pPciRoot->PciBus.cBridges)
437	{
438	#ifdef IN_RING3 /** @todo do lookup in R0/RC too! r=klaus don't think that it can work, since the config space access callback only works in R3 */
439	PPDMPCIDEV pBridgeDevice = ich9pciFindBridge(&pPciRoot->PciBus, pPciAddr->iBus);
440	if (pBridgeDevice)
441	{
442	AssertPtr(pBridgeDevice->Int.s.pfnBridgeConfigRead);
443	rcStrict = pBridgeDevice->Int.s.pfnBridgeConfigRead(pBridgeDevice->Int.s.CTX_SUFF(pDevIns), pPciAddr->iBus,
444	pPciAddr->iDeviceFunc, pPciAddr->iRegister, cb, pu32Value);
445	}
446	else
447	*pu32Value = UINT32_MAX;
448	#else
449	rcStrict = rcReschedule;
450	#endif
451	}
452	else
453	*pu32Value = 0xffffffff;
454	}
455	else /* forward to directly connected device */
456	{
457	R3PTRTYPE(PDMPCIDEV *) pPciDev = pPciRoot->PciBus.apDevices[pPciAddr->iDeviceFunc];
458	if (pPciDev)
459	{
460	#ifdef IN_RING3
461	rcStrict = VINF_PDM_PCI_DO_DEFAULT;
462	if (pPciDev->Int.s.pfnConfigRead)
463	rcStrict = pPciDev->Int.s.pfnConfigRead(pPciDev->Int.s.CTX_SUFF(pDevIns), pPciDev,
464	pPciAddr->iRegister, cb, pu32Value);
465	if (rcStrict == VINF_PDM_PCI_DO_DEFAULT)
466	rcStrict = devpciR3CommonConfigReadWorker(pPciDev, pPciAddr->iRegister, cb, pu32Value);
467	#else
468	rcStrict = rcReschedule;
469	#endif
470	}
471	else
472	*pu32Value = UINT32_MAX;
473	}
474
475	Log3Func(("%02x:%02x.%d reg %x(%d) gave %x %Rrc\n", pPciAddr->iBus, pPciAddr->iDeviceFunc >> 3, pPciAddr->iDeviceFunc & 0x7,
476	pPciAddr->iRegister, cb, *pu32Value, VBOXSTRICTRC_VAL(rcStrict) ));
477	return rcStrict;
478	}
479
480
481	/**
482	* @callback_method_impl{FNIOMIOPORTNEWIN,
483	* Port I/O Handler for PCI data IN operations.}
484	*
485	* Emulates reads from Configuration Data Port at 0CFCh for Configuration
486	* Mechanism \#1.
487	*/
488	static DECLCALLBACK(VBOXSTRICTRC)
489	ich9pciIOPortDataRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT offPort, uint32_t pu32, unsigned cb)
490	{
491	NOREF(pvUser);
492	Assert(offPort < 4);
493	if (!(offPort % cb))
494	{
495	PDEVPCIROOT pThis = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
496	*pu32 = 0xffffffff;
497
498	PCI_LOCK_RET(pDevIns, VINF_IOM_R3_IOPORT_READ);
499
500	/* Configuration space mapping enabled? */
501	VBOXSTRICTRC rcStrict;
502	if (!(pThis->uConfigReg & (1 << 31)))
503	rcStrict = VINF_SUCCESS;
504	else
505	{
506	/* Decode target device and configuration space register */
507	PciAddress aPciAddr;
508	ich9pciStateToPciAddr(pThis, offPort, &aPciAddr);
509
510	/* Perform configuration space read */
511	rcStrict = ich9pciConfigRead(pThis, &aPciAddr, cb, pu32, VINF_IOM_R3_IOPORT_READ);
512	}
513
514	PCI_UNLOCK(pDevIns);
515
516	LogFlowFunc(("offPort=%u cb=%#x (config=%#10x) -> %#x (%Rrc)\n", offPort, cb, *pu32, pThis->uConfigReg, VBOXSTRICTRC_VAL(rcStrict)));
517	return rcStrict;
518	}
519	AssertMsgFailed(("Unaligned read from offPort=%u cb=%d\n", offPort, cb));
520	return VERR_IOM_IOPORT_UNUSED;
521	}
522
523
524	/* Compute mapping of PCI slot and IRQ number to APIC interrupt line */
525	DECLINLINE(int) ich9pciSlot2ApicIrq(uint8_t uSlot, int irq_num)
526	{
527	return (irq_num + uSlot) & 7;
528	}
529
530	#ifdef IN_RING3
531
532	/* return the global irq number corresponding to a given device irq
533	pin. We could also use the bus number to have a more precise
534	mapping. This is the implementation note described in the PCI spec chapter 2.2.6 */
535	DECLINLINE(int) ich9pciSlotGetPirq(uint8_t uBus, uint8_t uDevFn, uint8_t uIrqNum)
536	{
537	NOREF(uBus);
538	int iSlotAddend = (uDevFn >> 3) - 1;
539	return (uIrqNum + iSlotAddend) & 3;
540	}
541
542	/* irqs corresponding to PCI irqs A-D, must match pci_irq_list in pcibios.inc */
543	/** @todo r=klaus inconsistent! ich9 doesn't implement PIRQ yet, so both needs to be addressed and tested thoroughly. */
544	static const uint8_t aPciIrqs[4] = { 11, 10, 9, 5 };
545
546	#endif /* IN_RING3 */
547
548	/* Add one more level up request on APIC input line */
549	DECLINLINE(void) ich9pciApicLevelUp(PDEVPCIROOT pPciRoot, int irq_num)
550	{
551	ASMAtomicIncU32(&pPciRoot->auPciApicIrqLevels[irq_num]);
552	}
553
554	/* Remove one level up request on APIC input line */
555	DECLINLINE(void) ich9pciApicLevelDown(PDEVPCIROOT pPciRoot, int irq_num)
556	{
557	ASMAtomicDecU32(&pPciRoot->auPciApicIrqLevels[irq_num]);
558	}
559
560	static void ich9pciApicSetIrq(PPDMDEVINS pDevIns, PDEVPCIBUS pBus, PDEVPCIBUSCC pBusCC,
561	uint8_t uDevFn, PDMPCIDEV *pPciDev, int irq_num1, int iLevel, uint32_t uTagSrc, int iForcedIrq)
562	{
563	/* This is only allowed to be called with a pointer to the root bus. */
564	AssertMsg(pBus->iBus == 0, ("iBus=%u\n", pBus->iBus));
565	uint16_t const uBusDevFn = PCIBDF_MAKE(pBus->iBus, uDevFn);
566
567	if (iForcedIrq == -1)
568	{
569	int apic_irq, apic_level;
570	PDEVPCIROOT pPciRoot = DEVPCIBUS_2_DEVPCIROOT(pBus);
571	int irq_num = ich9pciSlot2ApicIrq(uDevFn >> 3, irq_num1);
572
573	if ((iLevel & PDM_IRQ_LEVEL_HIGH) == PDM_IRQ_LEVEL_HIGH)
574	ich9pciApicLevelUp(pPciRoot, irq_num);
575	else if ((iLevel & PDM_IRQ_LEVEL_HIGH) == PDM_IRQ_LEVEL_LOW)
576	ich9pciApicLevelDown(pPciRoot, irq_num);
577
578	apic_irq = irq_num + 0x10;
579	apic_level = pPciRoot->auPciApicIrqLevels[irq_num] != 0;
580	Log3Func(("%s: irq_num1=%d level=%d apic_irq=%d apic_level=%d irq_num1=%d uTagSrc=%#x\n",
581	R3STRING(pPciDev->pszNameR3), irq_num1, iLevel, apic_irq, apic_level, irq_num, uTagSrc));
582	pBusCC->CTX_SUFF(pPciHlp)->pfnIoApicSetIrq(pDevIns, uBusDevFn, apic_irq, apic_level, uTagSrc);
583
584	if ((iLevel & PDM_IRQ_LEVEL_FLIP_FLOP) == PDM_IRQ_LEVEL_FLIP_FLOP)
585	{
586	/*
587	* we raised it few lines above, as PDM_IRQ_LEVEL_FLIP_FLOP has
588	* PDM_IRQ_LEVEL_HIGH bit set
589	*/
590	ich9pciApicLevelDown(pPciRoot, irq_num);
591	pPciDev->Int.s.uIrqPinState = PDM_IRQ_LEVEL_LOW;
592	apic_level = pPciRoot->auPciApicIrqLevels[irq_num] != 0;
593	Log3Func(("%s: irq_num1=%d level=%d apic_irq=%d apic_level=%d irq_num1=%d uTagSrc=%#x (flop)\n",
594	R3STRING(pPciDev->pszNameR3), irq_num1, iLevel, apic_irq, apic_level, irq_num, uTagSrc));
595	pBusCC->CTX_SUFF(pPciHlp)->pfnIoApicSetIrq(pDevIns, uBusDevFn, apic_irq, apic_level, uTagSrc);
596	}
597	} else {
598	Log3Func(("(forced) %s: irq_num1=%d level=%d acpi_irq=%d uTagSrc=%#x\n",
599	R3STRING(pPciDev->pszNameR3), irq_num1, iLevel, iForcedIrq, uTagSrc));
600	pBusCC->CTX_SUFF(pPciHlp)->pfnIoApicSetIrq(pDevIns, uBusDevFn, iForcedIrq, iLevel, uTagSrc);
601	}
602	}
603
604	static void ich9pciSetIrqInternal(PPDMDEVINS pDevIns, PDEVPCIROOT pPciRoot, PDEVPCIBUSCC pBusCC,
605	uint8_t uDevFn, PPDMPCIDEV pPciDev, int iIrq, int iLevel, uint32_t uTagSrc)
606	{
607	/* If MSI or MSI-X is enabled, PCI INTx# signals are disabled regardless of the PCI command
608	* register interrupt bit state.
609	* PCI 3.0 (section 6.8) forbids MSI and MSI-X to be enabled at the same time and makes
610	* that undefined behavior. We check for MSI first, then MSI-X.
611	*/
612	if (MsiIsEnabled(pPciDev))
613	{
614	Assert(!MsixIsEnabled(pPciDev)); /* Not allowed -- see note above. */
615	LogFlowFunc(("PCI Dev %p : MSI\n", pPciDev));
616	MsiNotify(pDevIns, pBusCC->CTX_SUFF(pPciHlp), pPciDev, iIrq, iLevel, uTagSrc);
617	return;
618	}
619
620	if (MsixIsEnabled(pPciDev))
621	{
622	LogFlowFunc(("PCI Dev %p : MSI-X\n", pPciDev));
623	MsixNotify(pDevIns, pBusCC->CTX_SUFF(pPciHlp), pPciDev, iIrq, iLevel, uTagSrc);
624	return;
625	}
626
627	PDEVPCIBUS pBus = &pPciRoot->PciBus;
628	/* safe, only needs to go to the config space array */
629	const bool fIsAcpiDevice = PDMPciDevGetDeviceId(pPciDev) == 0x7113;
630
631	LogFlowFunc(("PCI Dev %p : IRQ\n", pPciDev));
632	/* Check if the state changed. */
633	if (pPciDev->Int.s.uIrqPinState != iLevel)
634	{
635	pPciDev->Int.s.uIrqPinState = (iLevel & PDM_IRQ_LEVEL_HIGH);
636
637	/** @todo r=klaus: implement PIRQ handling (if APIC isn't active). Needed for legacy OSes which don't use the APIC stuff. */
638
639	/* Send interrupt to I/O APIC only now. */
640	if (fIsAcpiDevice)
641	/*
642	* ACPI needs special treatment since SCI is hardwired and
643	* should not be affected by PCI IRQ routing tables at the
644	* same time SCI IRQ is shared in PCI sense hence this
645	* kludge (i.e. we fetch the hardwired value from ACPIs
646	* PCI device configuration space).
647	*/
648	/* safe, only needs to go to the config space array */
649	ich9pciApicSetIrq(pDevIns, pBus, pBusCC, uDevFn, pPciDev, -1, iLevel, uTagSrc, PDMPciDevGetInterruptLine(pPciDev));
650	else
651	ich9pciApicSetIrq(pDevIns, pBus, pBusCC, uDevFn, pPciDev, iIrq, iLevel, uTagSrc, -1);
652	}
653	}
654
655
656	/**
657	* @callback_method_impl{FNIOMMMIONEWWRITE,
658	* Emulates writes to configuration space.}
659	*/
660	static DECLCALLBACK(VBOXSTRICTRC) ich9pciMcfgMMIOWrite(PPDMDEVINS pDevIns, void pvUser, RTGCPHYS off, void const pv, unsigned cb)
661	{
662	PDEVPCIROOT pPciRoot = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
663	Log2Func(("%RGp LB %d\n", off, cb));
664	NOREF(pvUser);
665
666	/* Decode target device and configuration space register */
667	PciAddress aDest;
668	ich9pciPhysToPciAddr(pPciRoot, off, &aDest);
669
670	/* Get the value. */
671	uint32_t u32;
672	switch (cb)
673	{
674	case 1:
675	u32 = (uint8_t const )pv;
676	break;
677	case 2:
678	u32 = (uint16_t const )pv;
679	break;
680	case 4:
681	u32 = (uint32_t const )pv;
682	break;
683	default:
684	ASSERT_GUEST_MSG_FAILED(("cb=%u off=%RGp\n", cb, off)); /** @todo how the heck should this work? Split it, right? */
685	u32 = 0;
686	break;
687	}
688
689	/* Perform configuration space write */
690	PCI_LOCK_RET(pDevIns, VINF_IOM_R3_MMIO_WRITE);
691	VBOXSTRICTRC rcStrict = ich9pciConfigWrite(pDevIns, pPciRoot, &aDest, u32, cb, VINF_IOM_R3_MMIO_WRITE);
692	PCI_UNLOCK(pDevIns);
693
694	return rcStrict;
695	}
696
697
698	/**
699	* @callback_method_impl{FNIOMMMIONEWWRITE,
700	* Emulates reads from configuration space.}
701	*/
702	static DECLCALLBACK(VBOXSTRICTRC) ich9pciMcfgMMIORead(PPDMDEVINS pDevIns, void pvUser, RTGCPHYS off, void pv, unsigned cb)
703	{
704	PDEVPCIROOT pPciRoot = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
705	LogFlowFunc(("%RGp LB %u\n", off, cb));
706	NOREF(pvUser);
707
708	/* Decode target device and configuration space register */
709	PciAddress aDest;
710	ich9pciPhysToPciAddr(pPciRoot, off, &aDest);
711
712	/* Perform configuration space read */
713	uint32_t u32Value = 0;
714	PCI_LOCK_RET(pDevIns, VINF_IOM_R3_MMIO_READ);
715	VBOXSTRICTRC rcStrict = ich9pciConfigRead(pPciRoot, &aDest, cb, &u32Value, VINF_IOM_R3_MMIO_READ);
716	PCI_UNLOCK(pDevIns);
717
718	if (RT_SUCCESS(rcStrict)) /** @todo this is wrong, though it probably works fine due to double buffering... */
719	{
720	switch (cb)
721	{
722	case 1:
723	(uint8_t )pv = (uint8_t)u32Value;
724	break;
725	case 2:
726	(uint16_t )pv = (uint16_t)u32Value;
727	break;
728	case 4:
729	(uint32_t )pv = u32Value;
730	break;
731	default:
732	ASSERT_GUEST_MSG_FAILED(("cb=%u off=%RGp\n", cb, off)); /** @todo how the heck should this work? Split it, right? */
733	break;
734	}
735	}
736
737	return VBOXSTRICTRC_TODO(rcStrict);
738	}
739
740	#ifdef IN_RING3
741
742	DECLINLINE(PPDMPCIDEV) ich9pciFindBridge(PDEVPCIBUS pBus, uint8_t uBus)
743	{
744	/* Search for a fitting bridge. */
745	for (uint32_t iBridge = 0; iBridge < pBus->cBridges; iBridge++)
746	{
747	/*
748	* Examine secondary and subordinate bus number.
749	* If the target bus is in the range we pass the request on to the bridge.
750	*/
751	PPDMPCIDEV pBridge = pBus->papBridgesR3[iBridge];
752	AssertMsg(pBridge && pciDevIsPci2PciBridge(pBridge),
753	("Device is not a PCI bridge but on the list of PCI bridges\n"));
754	/* safe, only needs to go to the config space array */
755	uint32_t uSecondary = PDMPciDevGetByte(pBridge, VBOX_PCI_SECONDARY_BUS);
756	/* safe, only needs to go to the config space array */
757	uint32_t uSubordinate = PDMPciDevGetByte(pBridge, VBOX_PCI_SUBORDINATE_BUS);
758	Log3Func(("bus %p, bridge %d: %d in %d..%d\n", pBus, iBridge, uBus, uSecondary, uSubordinate));
759	if (uBus >= uSecondary && uBus <= uSubordinate)
760	return pBridge;
761	}
762
763	/* Nothing found. */
764	return NULL;
765	}
766
767	uint32_t devpciR3GetCfg(PPDMPCIDEV pPciDev, int32_t iRegister, int cb)
768	{
769	uint32_t u32Value = UINT32_MAX;
770	VBOXSTRICTRC rcStrict = VINF_PDM_PCI_DO_DEFAULT;
771	if (pPciDev->Int.s.pfnConfigRead)
772	rcStrict = pPciDev->Int.s.pfnConfigRead(pPciDev->Int.s.CTX_SUFF(pDevIns), pPciDev, iRegister, cb, &u32Value);
773	if (rcStrict == VINF_PDM_PCI_DO_DEFAULT)
774	rcStrict = devpciR3CommonConfigReadWorker(pPciDev, iRegister, cb, &u32Value);
775	AssertRCSuccess(VBOXSTRICTRC_VAL(rcStrict));
776	return u32Value;
777	}
778
779	DECLINLINE(uint32_t) devpciGetRegionReg(int iRegion)
780	{
781	return iRegion == VBOX_PCI_ROM_SLOT
782	? VBOX_PCI_ROM_ADDRESS : (VBOX_PCI_BASE_ADDRESS_0 + iRegion * 4);
783	}
784
785	/**
786	* Worker for devpciR3SetByte(), devpciR3SetWord() and devpciR3SetDWord(), also
787	* used during state restore.
788	*/
789	void devpciR3SetCfg(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev, int32_t iRegister, uint32_t u32Value, int cb)
790	{
791	Assert(cb <= 4 && cb != 3);
792	VBOXSTRICTRC rcStrict = VINF_PDM_PCI_DO_DEFAULT;
793	if (pPciDev->Int.s.pfnConfigWrite)
794	rcStrict = pPciDev->Int.s.pfnConfigWrite(pPciDev->Int.s.CTX_SUFF(pDevIns), pPciDev, iRegister, cb, u32Value);
795	if (rcStrict == VINF_PDM_PCI_DO_DEFAULT)
796	rcStrict = devpciR3CommonConfigWriteWorker(pDevIns, PDMINS_2_DATA_CC(pDevIns, PDEVPCIBUSCC),
797	pPciDev, iRegister, cb, u32Value);
798	AssertRCSuccess(VBOXSTRICTRC_VAL(rcStrict));
799	}
800
801
802	/* -=-=-=-=-=- PCI Bus Interface Methods (PDMPCIBUSREG) -=-=-=-=-=- */
803
804	/**
805	* Search for a completely unused device entry (all 8 functions are unused).
806	*
807	* @returns VBox status code.
808	* @param pBus The bus to register with.
809	* @remarks Caller enters the PDM critical section.
810	*/
811	static uint8_t devpciR3CommonFindUnusedDeviceNo(PDEVPCIBUS pBus)
812	{
813	for (uint8_t uPciDevNo = pBus->iDevSearch >> VBOX_PCI_DEVFN_DEV_SHIFT; uPciDevNo < VBOX_PCI_MAX_DEVICES; uPciDevNo++)
814	if ( !pBus->apDevices[VBOX_PCI_DEVFN_MAKE(uPciDevNo, 0)]
815	&& !pBus->apDevices[VBOX_PCI_DEVFN_MAKE(uPciDevNo, 1)]
816	&& !pBus->apDevices[VBOX_PCI_DEVFN_MAKE(uPciDevNo, 2)]
817	&& !pBus->apDevices[VBOX_PCI_DEVFN_MAKE(uPciDevNo, 3)]
818	&& !pBus->apDevices[VBOX_PCI_DEVFN_MAKE(uPciDevNo, 4)]
819	&& !pBus->apDevices[VBOX_PCI_DEVFN_MAKE(uPciDevNo, 5)]
820	&& !pBus->apDevices[VBOX_PCI_DEVFN_MAKE(uPciDevNo, 6)]
821	&& !pBus->apDevices[VBOX_PCI_DEVFN_MAKE(uPciDevNo, 7)])
822	return uPciDevNo;
823	return UINT8_MAX;
824	}
825
826
827
828	/**
829	* Registers the device with the specified PCI bus.
830	*
831	* This is shared between the pci bus and pci bridge code.
832	*
833	* @returns VBox status code.
834	* @param pDevIns The PCI bus device instance.
835	* @param pBus The bus to register with.
836	* @param pPciDev The PCI device structure.
837	* @param fFlags Reserved for future use, PDMPCIDEVREG_F_MBZ.
838	* @param uPciDevNo PDMPCIDEVREG_DEV_NO_FIRST_UNUSED, or a specific
839	* device number (0-31).
840	* @param uPciFunNo PDMPCIDEVREG_FUN_NO_FIRST_UNUSED, or a specific
841	* function number (0-7).
842	* @param pszName Device name (static but not unique).
843	*
844	* @remarks Caller enters the PDM critical section.
845	*/
846	static int devpciR3CommonRegisterDeviceOnBus(PPDMDEVINS pDevIns, PDEVPCIBUS pBus, PPDMPCIDEV pPciDev, uint32_t fFlags,
847	uint8_t uPciDevNo, uint8_t uPciFunNo, const char *pszName)
848	{
849	RT_NOREF(pDevIns);
850
851	/*
852	* Validate input.
853	*/
854	AssertPtrReturn(pszName, VERR_INVALID_POINTER);
855	AssertPtrReturn(pPciDev, VERR_INVALID_POINTER);
856	AssertReturn(!(fFlags & ~PDMPCIDEVREG_F_VALID_MASK), VERR_INVALID_FLAGS);
857	AssertReturn(uPciDevNo < VBOX_PCI_MAX_DEVICES \|\| uPciDevNo == PDMPCIDEVREG_DEV_NO_FIRST_UNUSED, VERR_INVALID_PARAMETER);
858	AssertReturn(uPciFunNo < VBOX_PCI_MAX_FUNCTIONS \|\| uPciFunNo == PDMPCIDEVREG_FUN_NO_FIRST_UNUSED, VERR_INVALID_PARAMETER);
859
860	/*
861	* Assign device & function numbers.
862	*/
863
864	/* Work the optional assignment flag. */
865	if (fFlags & PDMPCIDEVREG_F_NOT_MANDATORY_NO)
866	{
867	AssertLogRelMsgReturn(uPciDevNo < VBOX_PCI_MAX_DEVICES && uPciFunNo < VBOX_PCI_MAX_FUNCTIONS,
868	("PDMPCIDEVREG_F_NOT_MANDATORY_NO not implemented for #Dev=%#x / #Fun=%#x\n", uPciDevNo, uPciFunNo),
869	VERR_NOT_IMPLEMENTED);
870	if (pBus->apDevices[VBOX_PCI_DEVFN_MAKE(uPciDevNo, uPciFunNo)])
871	{
872	uPciDevNo = PDMPCIDEVREG_DEV_NO_FIRST_UNUSED;
873	uPciFunNo = PDMPCIDEVREG_FUN_NO_FIRST_UNUSED;
874	}
875	}
876
877	if (uPciDevNo == PDMPCIDEVREG_DEV_NO_FIRST_UNUSED)
878	{
879	/* Just find the next unused device number and we're good. */
880	uPciDevNo = devpciR3CommonFindUnusedDeviceNo(pBus);
881	AssertLogRelMsgReturn(uPciDevNo < VBOX_PCI_MAX_DEVICES, ("Couldn't find a free spot!\n"), VERR_PDM_TOO_PCI_MANY_DEVICES);
882	if (uPciFunNo == PDMPCIDEVREG_FUN_NO_FIRST_UNUSED)
883	uPciFunNo = 0;
884	}
885	else
886	{
887	/*
888	* Direct assignment of device number can be more complicated.
889	*/
890	PPDMPCIDEV pClash;
891	if (uPciFunNo != PDMPCIDEVREG_FUN_NO_FIRST_UNUSED)
892	{
893	/* In the case of a specified function, we only relocate an existing
894	device if it belongs to a different device instance. Reasoning is
895	that the device should figure out it's own function assignments.
896	Note! We could make this more flexible by relocating functions assigned
897	via PDMPCIDEVREG_FUN_NO_FIRST_UNUSED, but it can wait till it's needed. */
898	pClash = pBus->apDevices[VBOX_PCI_DEVFN_MAKE(uPciDevNo, uPciFunNo)];
899	if (!pClash)
900	{ /* likely */ }
901	else if (pClash->Int.s.pDevInsR3 == pPciDev->Int.s.pDevInsR3)
902	AssertLogRelMsgFailedReturn(("PCI Configuration conflict at %u.%u: %s vs %s (same pDevIns)!\n",
903	uPciDevNo, uPciFunNo, pClash->pszNameR3, pszName),
904	VERR_PDM_TOO_PCI_MANY_DEVICES);
905	else if (!pClash->Int.s.fReassignableDevNo)
906	AssertLogRelMsgFailedReturn(("PCI Configuration conflict at %u.%u: %s vs %s (different pDevIns)!\n",
907	uPciDevNo, uPciFunNo, pClash->pszNameR3, pszName),
908	VERR_PDM_TOO_PCI_MANY_DEVICES);
909	}
910	else
911	{
912	/* First unused function slot. Again, we only relocate the whole
913	thing if all the device instance differs, because we otherwise
914	reason that a device should manage its own functions correctly. */
915	unsigned cSameDevInses = 0;
916	for (uPciFunNo = 0, pClash = NULL; uPciFunNo < VBOX_PCI_MAX_FUNCTIONS; uPciFunNo++)
917	{
918	pClash = pBus->apDevices[VBOX_PCI_DEVFN_MAKE(uPciDevNo, uPciFunNo)];
919	if (!pClash)
920	break;
921	cSameDevInses += pClash->Int.s.pDevInsR3 == pPciDev->Int.s.pDevInsR3;
922	}
923	if (!pClash)
924	Assert(uPciFunNo < VBOX_PCI_MAX_FUNCTIONS);
925	else
926	AssertLogRelMsgReturn(cSameDevInses == 0,
927	("PCI Configuration conflict at %u.* appending %s (%u of %u pDevIns matches)!\n",
928	uPciDevNo, pszName, cSameDevInses, VBOX_PCI_MAX_FUNCTIONS),
929	VERR_PDM_TOO_PCI_MANY_DEVICES);
930	}
931	if (pClash)
932	{
933	/*
934	* Try relocate the existing device.
935	*/
936	/* Check that all functions can be moved. */
937	for (uint8_t uMoveFun = 0; uMoveFun < VBOX_PCI_MAX_FUNCTIONS; uMoveFun++)
938	{
939	PPDMPCIDEV pMovePciDev = pBus->apDevices[VBOX_PCI_DEVFN_MAKE(uPciDevNo, uMoveFun)];
940	AssertLogRelMsgReturn(!pMovePciDev \|\| pMovePciDev->Int.s.fReassignableDevNo,
941	("PCI Configuration conflict at %u.%u: %s vs %s\n",
942	uPciDevNo, uMoveFun, pMovePciDev->pszNameR3, pszName),
943	VERR_PDM_TOO_PCI_MANY_DEVICES);
944	}
945
946	/* Find a free device number to move it to. */
947	uint8_t uMoveToDevNo = devpciR3CommonFindUnusedDeviceNo(pBus);
948	Assert(uMoveToDevNo != uPciFunNo);
949	AssertLogRelMsgReturn(uMoveToDevNo < VBOX_PCI_MAX_DEVICES,
950	("No space to relocate device at %u so '%s' can be placed there instead!\n", uPciFunNo, pszName),
951	VERR_PDM_TOO_PCI_MANY_DEVICES);
952
953	/* Execute the move. */
954	for (uint8_t uMoveFun = 0; uMoveFun < VBOX_PCI_MAX_FUNCTIONS; uMoveFun++)
955	{
956	PPDMPCIDEV pMovePciDev = pBus->apDevices[VBOX_PCI_DEVFN_MAKE(uPciDevNo, uMoveFun)];
957	if (pMovePciDev)
958	{
959	Log(("PCI: Relocating '%s' from %u.%u to %u.%u.\n", pMovePciDev->pszNameR3, uPciDevNo, uMoveFun, uMoveToDevNo, uMoveFun));
960	pBus->apDevices[VBOX_PCI_DEVFN_MAKE(uPciDevNo, uMoveFun)] = NULL;
961	pBus->apDevices[VBOX_PCI_DEVFN_MAKE(uMoveToDevNo, uMoveFun)] = pMovePciDev;
962	pMovePciDev->uDevFn = VBOX_PCI_DEVFN_MAKE(uMoveToDevNo, uMoveFun);
963	}
964	}
965	}
966	}
967
968	/*
969	* Now, initialize the rest of the PCI device structure.
970	*/
971	Assert(!pBus->apDevices[VBOX_PCI_DEVFN_MAKE(uPciDevNo, uPciFunNo)]);
972	pBus->apDevices[VBOX_PCI_DEVFN_MAKE(uPciDevNo, uPciFunNo)] = pPciDev;
973
974	pPciDev->uDevFn = VBOX_PCI_DEVFN_MAKE(uPciDevNo, uPciFunNo);
975	pPciDev->Int.s.pBusR3 = pBus;
976	Assert(pBus == PDMINS_2_DATA(pDevIns, PDEVPCIBUS));
977	pPciDev->Int.s.pfnConfigRead = NULL;
978	pPciDev->Int.s.pfnConfigWrite = NULL;
979	pPciDev->Int.s.hMmioMsix = NIL_IOMMMIOHANDLE;
980	if (pBus->fTypePiix3 && pPciDev->cbConfig > 256)
981	pPciDev->cbConfig = 256;
982
983	/* Remember and mark bridges. */
984	if (fFlags & PDMPCIDEVREG_F_PCI_BRIDGE)
985	{
986	AssertLogRelMsgReturn(pBus->cBridges < RT_ELEMENTS(pBus->apDevices),
987	("Number of bridges exceeds the number of possible devices on the bus\n"),
988	VERR_INTERNAL_ERROR_3);
989	pBus->papBridgesR3[pBus->cBridges++] = pPciDev;
990	pciDevSetPci2PciBridge(pPciDev);
991	}
992
993	Log(("PCI: Registered device %d function %d (%#x) '%s'.\n",
994	uPciDevNo, uPciFunNo, UINT32_C(0x80000000) \| (pPciDev->uDevFn << 8), pszName));
995
996	return VINF_SUCCESS;
997	}
998
999
1000	/**
1001	* @interface_method_impl{PDMPCIBUSREGR3,pfnRegisterR3}
1002	*/
1003	DECLCALLBACK(int) devpciR3CommonRegisterDevice(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev, uint32_t fFlags,
1004	uint8_t uPciDevNo, uint8_t uPciFunNo, const char *pszName)
1005	{
1006	PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS);
1007	AssertCompileMemberOffset(DEVPCIROOT, PciBus, 0);
1008	return devpciR3CommonRegisterDeviceOnBus(pDevIns, pBus, pPciDev, fFlags, uPciDevNo, uPciFunNo, pszName);
1009	}
1010
1011
1012	/**
1013	* @interface_method_impl{PDMPCIBUSREGR3,pfnRegisterR3}
1014	*/
1015	DECLCALLBACK(int) devpcibridgeR3CommonRegisterDevice(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev, uint32_t fFlags,
1016	uint8_t uPciDevNo, uint8_t uPciFunNo, const char *pszName)
1017	{
1018	PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS);
1019	return devpciR3CommonRegisterDeviceOnBus(pDevIns, pBus, pPciDev, fFlags, uPciDevNo, uPciFunNo, pszName);
1020	}
1021
1022
1023	static DECLCALLBACK(int) ich9pciRegisterMsi(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev, PPDMMSIREG pMsiReg)
1024	{
1025	//PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS);
1026	PDEVPCIBUSCC pBusCC = PDMINS_2_DATA_CC(pDevIns, PDEVPCIBUSCC);
1027
1028	int rc = MsiR3Init(pPciDev, pMsiReg);
1029	if (RT_SUCCESS(rc))
1030	rc = MsixR3Init(pBusCC->CTX_SUFF(pPciHlp), pPciDev, pMsiReg);
1031
1032	return rc;
1033	}
1034
1035
1036	/**
1037	* @interface_method_impl{PDMPCIBUSREGR3,pfnIORegionRegisterR3}
1038	*/
1039	DECLCALLBACK(int) devpciR3CommonIORegionRegister(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev, uint32_t iRegion,
1040	RTGCPHYS cbRegion, PCIADDRESSSPACE enmType, uint32_t fFlags,
1041	uint64_t hHandle, PFNPCIIOREGIONMAP pfnMapUnmap)
1042	{
1043	LogFunc(("%s: region #%u size %RGp type %x fFlags=%#x hHandle=%#RX64\n",
1044	pPciDev->pszNameR3, iRegion, cbRegion, enmType, fFlags, hHandle));
1045	RT_NOREF(pDevIns);
1046
1047	/*
1048	* Validate.
1049	*/
1050	AssertMsgReturn( enmType == (PCI_ADDRESS_SPACE_MEM \| PCI_ADDRESS_SPACE_BAR32)
1051	\|\| enmType == (PCI_ADDRESS_SPACE_MEM_PREFETCH \| PCI_ADDRESS_SPACE_BAR32)
1052	\|\| enmType == (PCI_ADDRESS_SPACE_MEM \| PCI_ADDRESS_SPACE_BAR64)
1053	\|\| enmType == (PCI_ADDRESS_SPACE_MEM_PREFETCH \| PCI_ADDRESS_SPACE_BAR64)
1054	\|\| enmType == PCI_ADDRESS_SPACE_IO
1055	,
1056	("Invalid enmType=%#x? Or was this a bitmask after all...\n", enmType),
1057	VERR_INVALID_PARAMETER);
1058	AssertMsgReturn((unsigned)iRegion < VBOX_PCI_NUM_REGIONS,
1059	("Invalid iRegion=%d VBOX_PCI_NUM_REGIONS=%d\n", iRegion, VBOX_PCI_NUM_REGIONS),
1060	VERR_INVALID_PARAMETER);
1061	int iLastSet = ASMBitLastSetU64(cbRegion);
1062	AssertMsgReturn( iLastSet != 0
1063	&& RT_BIT_64(iLastSet - 1) == cbRegion,
1064	("Invalid cbRegion=%RGp iLastSet=%#x (not a power of 2 or 0)\n", cbRegion, iLastSet),
1065	VERR_INVALID_PARAMETER);
1066	switch (fFlags & PDMPCIDEV_IORGN_F_HANDLE_MASK)
1067	{
1068	case PDMPCIDEV_IORGN_F_IOPORT_HANDLE:
1069	case PDMPCIDEV_IORGN_F_MMIO_HANDLE:
1070	case PDMPCIDEV_IORGN_F_MMIO2_HANDLE:
1071	AssertReturn(hHandle != UINT64_MAX, VERR_INVALID_HANDLE);
1072	break;
1073	default:
1074	AssertReturn(hHandle == UINT64_MAX, VERR_INVALID_HANDLE);
1075	}
1076
1077	/* Make sure that we haven't marked this region as continuation of 64-bit region. */
1078	AssertReturn(pPciDev->Int.s.aIORegions[iRegion].type != 0xff, VERR_NOT_AVAILABLE);
1079
1080	/*
1081	* Register the I/O region.
1082	*/
1083	PPCIIOREGION pRegion = &pPciDev->Int.s.aIORegions[iRegion];
1084	pRegion->addr = INVALID_PCI_ADDRESS;
1085	pRegion->size = cbRegion;
1086	pRegion->fFlags = fFlags;
1087	pRegion->hHandle = hHandle;
1088	pRegion->type = enmType;
1089	pRegion->pfnMap = pfnMapUnmap;
1090
1091	if ((enmType & PCI_ADDRESS_SPACE_BAR64) != 0)
1092	{
1093	/* VBOX_PCI_BASE_ADDRESS_5 and VBOX_PCI_ROM_ADDRESS are excluded. */
1094	AssertMsgReturn(iRegion < VBOX_PCI_NUM_REGIONS - 2,
1095	("Region %d cannot be 64-bit\n", iRegion),
1096	VERR_INVALID_PARAMETER);
1097	/* Mark next region as continuation of this one. */
1098	pPciDev->Int.s.aIORegions[iRegion + 1].type = 0xff;
1099	}
1100
1101	/* Set type in the PCI config space. */
1102	AssertCompile(PCI_ADDRESS_SPACE_MEM == 0);
1103	AssertCompile(PCI_ADDRESS_SPACE_IO == 1);
1104	AssertCompile(PCI_ADDRESS_SPACE_BAR64 == RT_BIT_32(2));
1105	AssertCompile(PCI_ADDRESS_SPACE_MEM_PREFETCH == RT_BIT_32(3));
1106	uint32_t u32Value = (uint32_t)enmType & (PCI_ADDRESS_SPACE_IO \| PCI_ADDRESS_SPACE_BAR64 \| PCI_ADDRESS_SPACE_MEM_PREFETCH);
1107	/* safe, only needs to go to the config space array */
1108	PDMPciDevSetDWord(pPciDev, devpciGetRegionReg(iRegion), u32Value);
1109
1110	return VINF_SUCCESS;
1111	}
1112
1113
1114	/**
1115	* @interface_method_impl{PDMPCIBUSREGR3,pfnInterceptConfigAccesses}
1116	*/
1117	DECLCALLBACK(void) devpciR3CommonInterceptConfigAccesses(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev,
1118	PFNPCICONFIGREAD pfnRead, PFNPCICONFIGWRITE pfnWrite)
1119	{
1120	NOREF(pDevIns);
1121
1122	pPciDev->Int.s.pfnConfigRead = pfnRead;
1123	pPciDev->Int.s.pfnConfigWrite = pfnWrite;
1124	}
1125
1126
1127	static int ich9pciR3CommonSaveExec(PCPDMDEVHLPR3 pHlp, PDEVPCIBUS pBus, PSSMHANDLE pSSM)
1128	{
1129	/*
1130	* Iterate thru all the devices.
1131	*/
1132	for (uint32_t uDevFn = 0; uDevFn < RT_ELEMENTS(pBus->apDevices); uDevFn++)
1133	{
1134	PPDMPCIDEV pDev = pBus->apDevices[uDevFn];
1135	if (pDev)
1136	{
1137	/* Device position */
1138	pHlp->pfnSSMPutU32(pSSM, uDevFn);
1139
1140	/* PCI config registers */
1141	pHlp->pfnSSMPutU32(pSSM, sizeof(pDev->abConfig));
1142	pHlp->pfnSSMPutMem(pSSM, pDev->abConfig, sizeof(pDev->abConfig));
1143
1144	/* Device flags */
1145	pHlp->pfnSSMPutU32(pSSM, pDev->Int.s.fFlags);
1146
1147	/* IRQ pin state */
1148	pHlp->pfnSSMPutS32(pSSM, pDev->Int.s.uIrqPinState);
1149
1150	/* MSI info */
1151	pHlp->pfnSSMPutU8(pSSM, pDev->Int.s.u8MsiCapOffset);
1152	pHlp->pfnSSMPutU8(pSSM, pDev->Int.s.u8MsiCapSize);
1153
1154	/* MSI-X info */
1155	pHlp->pfnSSMPutU8(pSSM, pDev->Int.s.u8MsixCapOffset);
1156	pHlp->pfnSSMPutU8(pSSM, pDev->Int.s.u8MsixCapSize);
1157
1158	/* Save MSI-X page state */
1159	if (pDev->Int.s.u8MsixCapOffset != 0)
1160	{
1161	pHlp->pfnSSMPutU32(pSSM, pDev->Int.s.cbMsixRegion);
1162	pHlp->pfnSSMPutMem(pSSM, pDev->abMsixState, pDev->Int.s.cbMsixRegion);
1163	}
1164	else
1165	pHlp->pfnSSMPutU32(pSSM, 0);
1166
1167	/* Save the type an size of all the regions. */
1168	for (uint32_t iRegion = 0; iRegion < VBOX_PCI_NUM_REGIONS; iRegion++)
1169	{
1170	pHlp->pfnSSMPutU8(pSSM, pDev->Int.s.aIORegions[iRegion].type);
1171	pHlp->pfnSSMPutU64(pSSM, pDev->Int.s.aIORegions[iRegion].size);
1172	}
1173	}
1174	}
1175	return pHlp->pfnSSMPutU32(pSSM, UINT32_MAX); /* terminator */
1176	}
1177
1178	static DECLCALLBACK(int) ich9pciR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1179	{
1180	PDEVPCIROOT pThis = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
1181	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
1182
1183	/*
1184	* Bus state data.
1185	*/
1186	pHlp->pfnSSMPutU32(pSSM, pThis->uConfigReg);
1187
1188	/*
1189	* Save IRQ states.
1190	*/
1191	for (unsigned i = 0; i < RT_ELEMENTS(pThis->auPciApicIrqLevels); i++)
1192	pHlp->pfnSSMPutU32(pSSM, pThis->auPciApicIrqLevels[i]);
1193
1194	pHlp->pfnSSMPutU32(pSSM, UINT32_MAX); /* separator */
1195
1196	return ich9pciR3CommonSaveExec(pHlp, &pThis->PciBus, pSSM);
1197	}
1198
1199
1200	static DECLCALLBACK(int) ich9pcibridgeR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1201	{
1202	PDEVPCIBUS pThis = PDMINS_2_DATA(pDevIns, PDEVPCIBUS);
1203	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
1204
1205	return ich9pciR3CommonSaveExec(pHlp, pThis, pSSM);
1206	}
1207
1208
1209	/**
1210	* @callback_method_impl{FNPCIBRIDGECONFIGWRITE}
1211	*/
1212	static DECLCALLBACK(VBOXSTRICTRC) ich9pcibridgeConfigWrite(PPDMDEVINSR3 pDevIns, uint8_t iBus, uint8_t iDevice,
1213	uint32_t u32Address, unsigned cb, uint32_t u32Value)
1214	{
1215	PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS);
1216	VBOXSTRICTRC rcStrict = VINF_SUCCESS;
1217	LogFlowFunc(("pDevIns=%p iBus=%d iDevice=%d u32Address=%#x cb=%d u32Value=%#x\n", pDevIns, iBus, iDevice, u32Address, cb, u32Value));
1218
1219	/* If the current bus is not the target bus search for the bus which contains the device. */
1220	/* safe, only needs to go to the config space array */
1221	if (iBus != PDMPciDevGetByte(pDevIns->apPciDevs[0], VBOX_PCI_SECONDARY_BUS))
1222	{
1223	PPDMPCIDEV pBridgeDevice = ich9pciFindBridge(pBus, iBus);
1224	if (pBridgeDevice)
1225	{
1226	AssertPtr(pBridgeDevice->Int.s.pfnBridgeConfigWrite);
1227	pBridgeDevice->Int.s.pfnBridgeConfigWrite(pBridgeDevice->Int.s.CTX_SUFF(pDevIns), iBus, iDevice,
1228	u32Address, cb, u32Value);
1229	}
1230	}
1231	else
1232	{
1233	/* This is the target bus, pass the write to the device. */
1234	PPDMPCIDEV pPciDev = pBus->apDevices[iDevice];
1235	if (pPciDev)
1236	{
1237	LogFunc(("%s: addr=%02x val=%08x len=%d\n", pPciDev->pszNameR3, u32Address, u32Value, cb));
1238	rcStrict = VINF_PDM_PCI_DO_DEFAULT;
1239	if (pPciDev->Int.s.pfnConfigWrite)
1240	rcStrict = pPciDev->Int.s.pfnConfigWrite(pPciDev->Int.s.CTX_SUFF(pDevIns), pPciDev, u32Address, cb, u32Value);
1241	if (rcStrict == VINF_PDM_PCI_DO_DEFAULT)
1242	rcStrict = devpciR3CommonConfigWriteWorker(pDevIns, PDMINS_2_DATA_CC(pDevIns, PDEVPCIBUSCC),
1243	pPciDev, u32Address, cb, u32Value);
1244	}
1245	}
1246	return rcStrict;
1247	}
1248
1249	/**
1250	* @callback_method_impl{FNPCIBRIDGECONFIGREAD}
1251	*/
1252	static DECLCALLBACK(VBOXSTRICTRC) ich9pcibridgeConfigRead(PPDMDEVINSR3 pDevIns, uint8_t iBus, uint8_t iDevice,
1253	uint32_t u32Address, unsigned cb, uint32_t *pu32Value)
1254	{
1255	PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS);
1256	VBOXSTRICTRC rcStrict = VINF_SUCCESS;
1257	LogFlowFunc(("pDevIns=%p iBus=%d iDevice=%d u32Address=%#x cb=%d\n", pDevIns, iBus, iDevice, u32Address, cb));
1258
1259	/* If the current bus is not the target bus search for the bus which contains the device. */
1260	/* safe, only needs to go to the config space array */
1261	if (iBus != PDMPciDevGetByte(pDevIns->apPciDevs[0], VBOX_PCI_SECONDARY_BUS))
1262	{
1263	PPDMPCIDEV pBridgeDevice = ich9pciFindBridge(pBus, iBus);
1264	if (pBridgeDevice)
1265	{
1266	AssertPtr(pBridgeDevice->Int.s.pfnBridgeConfigRead);
1267	rcStrict = pBridgeDevice->Int.s.pfnBridgeConfigRead(pBridgeDevice->Int.s.CTX_SUFF(pDevIns), iBus, iDevice,
1268	u32Address, cb, pu32Value);
1269	}
1270	else
1271	*pu32Value = UINT32_MAX;
1272	}
1273	else
1274	{
1275	/* This is the target bus, pass the read to the device. */
1276	PPDMPCIDEV pPciDev = pBus->apDevices[iDevice];
1277	if (pPciDev)
1278	{
1279	rcStrict = VINF_PDM_PCI_DO_DEFAULT;
1280	if (pPciDev->Int.s.pfnConfigRead)
1281	rcStrict = pPciDev->Int.s.pfnConfigRead(pPciDev->Int.s.CTX_SUFF(pDevIns), pPciDev, u32Address, cb, pu32Value);
1282	if (rcStrict == VINF_PDM_PCI_DO_DEFAULT)
1283	rcStrict = devpciR3CommonConfigReadWorker(pPciDev, u32Address, cb, pu32Value);
1284	LogFunc(("%s: u32Address=%02x pu32Value=%#010x cb=%d\n", pPciDev->pszNameR3, u32Address, pu32Value, cb));
1285	}
1286	else
1287	*pu32Value = UINT32_MAX;
1288	}
1289
1290	return rcStrict;
1291	}
1292
1293
1294
1295	/* -=-=-=-=-=- Saved State -=-=-=-=-=- */
1296
1297
1298	/**
1299	* Common routine for restoring the config registers of a PCI device.
1300	*
1301	* @param pDevIns The device instance of the PC bus.
1302	* @param pDev The PCI device.
1303	* @param pbSrcConfig The configuration register values to be loaded.
1304	*/
1305	void devpciR3CommonRestoreConfig(PPDMDEVINS pDevIns, PPDMPCIDEV pDev, uint8_t const *pbSrcConfig)
1306	{
1307	/*
1308	* This table defines the fields for normal devices and bridge devices, and
1309	* the order in which they need to be restored.
1310	*/
1311	static const struct PciField
1312	{
1313	uint8_t off;
1314	uint8_t cb;
1315	uint8_t fWritable;
1316	uint8_t fBridge;
1317	const char *pszName;
1318	} s_aFields[] =
1319	{
1320	/* off,cb,fW,fB, pszName */
1321	{ 0x00, 2, 0, 3, "VENDOR_ID" },
1322	{ 0x02, 2, 0, 3, "DEVICE_ID" },
1323	{ 0x06, 2, 1, 3, "STATUS" },
1324	{ 0x08, 1, 0, 3, "REVISION_ID" },
1325	{ 0x09, 1, 0, 3, "CLASS_PROG" },
1326	{ 0x0a, 1, 0, 3, "CLASS_SUB" },
1327	{ 0x0b, 1, 0, 3, "CLASS_BASE" },
1328	{ 0x0c, 1, 1, 3, "CACHE_LINE_SIZE" },
1329	{ 0x0d, 1, 1, 3, "LATENCY_TIMER" },
1330	{ 0x0e, 1, 0, 3, "HEADER_TYPE" },
1331	{ 0x0f, 1, 1, 3, "BIST" },
1332	{ 0x10, 4, 1, 3, "BASE_ADDRESS_0" },
1333	{ 0x14, 4, 1, 3, "BASE_ADDRESS_1" },
1334	{ 0x18, 4, 1, 1, "BASE_ADDRESS_2" },
1335	{ 0x18, 1, 1, 2, "PRIMARY_BUS" },
1336	{ 0x19, 1, 1, 2, "SECONDARY_BUS" },
1337	{ 0x1a, 1, 1, 2, "SUBORDINATE_BUS" },
1338	{ 0x1b, 1, 1, 2, "SEC_LATENCY_TIMER" },
1339	{ 0x1c, 4, 1, 1, "BASE_ADDRESS_3" },
1340	{ 0x1c, 1, 1, 2, "IO_BASE" },
1341	{ 0x1d, 1, 1, 2, "IO_LIMIT" },
1342	{ 0x1e, 2, 1, 2, "SEC_STATUS" },
1343	{ 0x20, 4, 1, 1, "BASE_ADDRESS_4" },
1344	{ 0x20, 2, 1, 2, "MEMORY_BASE" },
1345	{ 0x22, 2, 1, 2, "MEMORY_LIMIT" },
1346	{ 0x24, 4, 1, 1, "BASE_ADDRESS_5" },
1347	{ 0x24, 2, 1, 2, "PREF_MEMORY_BASE" },
1348	{ 0x26, 2, 1, 2, "PREF_MEMORY_LIMIT" },
1349	{ 0x28, 4, 0, 1, "CARDBUS_CIS" },
1350	{ 0x28, 4, 1, 2, "PREF_BASE_UPPER32" },
1351	{ 0x2c, 2, 0, 1, "SUBSYSTEM_VENDOR_ID" },
1352	{ 0x2c, 4, 1, 2, "PREF_LIMIT_UPPER32" },
1353	{ 0x2e, 2, 0, 1, "SUBSYSTEM_ID" },
1354	{ 0x30, 4, 1, 1, "ROM_ADDRESS" },
1355	{ 0x30, 2, 1, 2, "IO_BASE_UPPER16" },
1356	{ 0x32, 2, 1, 2, "IO_LIMIT_UPPER16" },
1357	{ 0x34, 4, 0, 3, "CAPABILITY_LIST" },
1358	{ 0x38, 4, 1, 1, "RESERVED_38" },
1359	{ 0x38, 4, 1, 2, "ROM_ADDRESS_BR" },
1360	{ 0x3c, 1, 1, 3, "INTERRUPT_LINE" },
1361	{ 0x3d, 1, 0, 3, "INTERRUPT_PIN" },
1362	{ 0x3e, 1, 0, 1, "MIN_GNT" },
1363	{ 0x3e, 2, 1, 2, "BRIDGE_CONTROL" },
1364	{ 0x3f, 1, 0, 1, "MAX_LAT" },
1365	/* The COMMAND register must come last as it requires the ADDRESS
1366	registers to be restored before we pretent to change it from 0 to
1367	whatever value the guest assigned it. */
1368	{ 0x04, 2, 1, 3, "COMMAND" },
1369	};
1370
1371	#ifdef RT_STRICT
1372	/* Check that we've got full register coverage. */
1373	uint32_t bmDevice[0x40 / 32];
1374	uint32_t bmBridge[0x40 / 32];
1375	RT_ZERO(bmDevice);
1376	RT_ZERO(bmBridge);
1377	for (uint32_t i = 0; i < RT_ELEMENTS(s_aFields); i++)
1378	{
1379	uint8_t off = s_aFields[i].off;
1380	uint8_t cb = s_aFields[i].cb;
1381	uint8_t f = s_aFields[i].fBridge;
1382	while (cb-- > 0)
1383	{
1384	if (f & 1) AssertMsg(!ASMBitTest(bmDevice, off), ("%#x\n", off));
1385	if (f & 2) AssertMsg(!ASMBitTest(bmBridge, off), ("%#x\n", off));
1386	if (f & 1) ASMBitSet(bmDevice, off);
1387	if (f & 2) ASMBitSet(bmBridge, off);
1388	off++;
1389	}
1390	}
1391	for (uint32_t off = 0; off < 0x40; off++)
1392	{
1393	AssertMsg(ASMBitTest(bmDevice, off), ("%#x\n", off));
1394	AssertMsg(ASMBitTest(bmBridge, off), ("%#x\n", off));
1395	}
1396	#endif
1397
1398	/*
1399	* Loop thru the fields covering the 64 bytes of standard registers.
1400	*/
1401	uint8_t const fBridge = pciDevIsPci2PciBridge(pDev) ? 2 : 1;
1402	Assert(!pciDevIsPassthrough(pDev));
1403	uint8_t *pbDstConfig = &pDev->abConfig[0];
1404
1405	for (uint32_t i = 0; i < RT_ELEMENTS(s_aFields); i++)
1406	if (s_aFields[i].fBridge & fBridge)
1407	{
1408	uint8_t const off = s_aFields[i].off;
1409	uint8_t const cb = s_aFields[i].cb;
1410	uint32_t u32Src;
1411	uint32_t u32Dst;
1412	switch (cb)
1413	{
1414	case 1:
1415	u32Src = pbSrcConfig[off];
1416	u32Dst = pbDstConfig[off];
1417	break;
1418	case 2:
1419	u32Src = (uint16_t const )&pbSrcConfig[off];
1420	u32Dst = (uint16_t const )&pbDstConfig[off];
1421	break;
1422	case 4:
1423	u32Src = (uint32_t const )&pbSrcConfig[off];
1424	u32Dst = (uint32_t const )&pbDstConfig[off];
1425	break;
1426	default:
1427	AssertFailed();
1428	continue;
1429	}
1430
1431	if ( u32Src != u32Dst
1432	\|\| off == VBOX_PCI_COMMAND)
1433	{
1434	if (u32Src != u32Dst)
1435	{
1436	if (!s_aFields[i].fWritable)
1437	LogRel(("PCI: %8s/%u: %2u-bit field %s: %x -> %x - !READ ONLY!\n",
1438	pDev->pszNameR3, pDev->Int.s.CTX_SUFF(pDevIns)->iInstance, cb*8, s_aFields[i].pszName, u32Dst, u32Src));
1439	else
1440	LogRel(("PCI: %8s/%u: %2u-bit field %s: %x -> %x\n",
1441	pDev->pszNameR3, pDev->Int.s.CTX_SUFF(pDevIns)->iInstance, cb*8, s_aFields[i].pszName, u32Dst, u32Src));
1442	}
1443	if (off == VBOX_PCI_COMMAND)
1444	/* safe, only needs to go to the config space array */
1445	PDMPciDevSetCommand(pDev, 0); /* For remapping, see pciR3CommonLoadExec/ich9pciR3CommonLoadExec. */
1446	devpciR3SetCfg(pDevIns, pDev, off, u32Src, cb);
1447	}
1448	}
1449
1450	/*
1451	* The device dependent registers.
1452	*
1453	* We will not use ConfigWrite here as we have no clue about the size
1454	* of the registers, so the device is responsible for correctly
1455	* restoring functionality governed by these registers.
1456	*/
1457	for (uint32_t off = 0x40; off < sizeof(pDev->abConfig); off++)
1458	if (pbDstConfig[off] != pbSrcConfig[off])
1459	{
1460	LogRel(("PCI: %8s/%u: register %02x: %02x -> %02x\n",
1461	pDev->pszNameR3, pDev->Int.s.CTX_SUFF(pDevIns)->iInstance, off, pbDstConfig[off], pbSrcConfig[off])); /** @todo make this Log() later. */
1462	pbDstConfig[off] = pbSrcConfig[off];
1463	}
1464	}
1465
1466
1467	/**
1468	* @callback_method_impl{FNPCIIOREGIONOLDSETTER}
1469	*/
1470	static DECLCALLBACK(int) devpciR3CommonRestoreOldSetRegion(PPDMPCIDEV pPciDev, uint32_t iRegion,
1471	RTGCPHYS cbRegion, PCIADDRESSSPACE enmType)
1472	{
1473	AssertLogRelReturn(iRegion < RT_ELEMENTS(pPciDev->Int.s.aIORegions), VERR_INVALID_PARAMETER);
1474	pPciDev->Int.s.aIORegions[iRegion].type = enmType;
1475	pPciDev->Int.s.aIORegions[iRegion].size = cbRegion;
1476	return VINF_SUCCESS;
1477	}
1478
1479
1480	/**
1481	* @callback_method_impl{FNPCIIOREGIONSWAP}
1482	*/
1483	static DECLCALLBACK(int) devpciR3CommonRestoreSwapRegions(PPDMPCIDEV pPciDev, uint32_t iRegion, uint32_t iOtherRegion)
1484	{
1485	AssertReturn(iRegion < iOtherRegion, VERR_INVALID_PARAMETER);
1486	AssertLogRelReturn(iOtherRegion < RT_ELEMENTS(pPciDev->Int.s.aIORegions), VERR_INVALID_PARAMETER);
1487	AssertReturn(pPciDev->Int.s.bPadding0 == (0xe0 \| (uint8_t)iRegion), VERR_INVALID_PARAMETER);
1488
1489	PCIIOREGION Tmp = pPciDev->Int.s.aIORegions[iRegion];
1490	pPciDev->Int.s.aIORegions[iRegion] = pPciDev->Int.s.aIORegions[iOtherRegion];
1491	pPciDev->Int.s.aIORegions[iOtherRegion] = Tmp;
1492
1493	return VINF_SUCCESS;
1494	}
1495
1496
1497	/**
1498	* Checks for and deals with changes in resource sizes and types.
1499	*
1500	* @returns VBox status code.
1501	* @param pHlp The device instance helper callback table.
1502	* @param pSSM The Saved state handle.
1503	* @param pPciDev The PCI device in question.
1504	* @param paIoRegions I/O regions with the size and type fields from
1505	* the saved state.
1506	* @param fNewState Set if this is a new state with I/O region sizes
1507	* and types, clear if old one.
1508	*/
1509	int devpciR3CommonRestoreRegions(PCPDMDEVHLPR3 pHlp, PSSMHANDLE pSSM, PPDMPCIDEV pPciDev, PPCIIOREGION paIoRegions, bool fNewState)
1510	{
1511	int rc;
1512	if (fNewState)
1513	{
1514	for (uint32_t iRegion = 0; iRegion < VBOX_PCI_NUM_REGIONS; iRegion++)
1515	{
1516	if ( pPciDev->Int.s.aIORegions[iRegion].type != paIoRegions[iRegion].type
1517	\|\| pPciDev->Int.s.aIORegions[iRegion].size != paIoRegions[iRegion].size)
1518	{
1519	AssertLogRelMsgFailed(("PCI: %8s/%u: region #%u size/type load change: %#RGp/%#x -> %#RGp/%#x\n",
1520	pPciDev->pszNameR3, pPciDev->Int.s.CTX_SUFF(pDevIns)->iInstance, iRegion,
1521	pPciDev->Int.s.aIORegions[iRegion].size, pPciDev->Int.s.aIORegions[iRegion].type,
1522	paIoRegions[iRegion].size, paIoRegions[iRegion].type));
1523	if (pPciDev->pfnRegionLoadChangeHookR3)
1524	{
1525	pPciDev->Int.s.bPadding0 = 0xe0 \| (uint8_t)iRegion;
1526	rc = pPciDev->pfnRegionLoadChangeHookR3(pPciDev->Int.s.pDevInsR3, pPciDev, iRegion, paIoRegions[iRegion].size,
1527	(PCIADDRESSSPACE)paIoRegions[iRegion].type, NULL /pfnOldSetter/,
1528	devpciR3CommonRestoreSwapRegions);
1529	pPciDev->Int.s.bPadding0 = 0;
1530	if (RT_FAILURE(rc))
1531	return pHlp->pfnSSMSetLoadError(pSSM, rc, RT_SRC_POS,
1532	N_("Device %s/%u failed to respond to region #%u size/type changing from %#RGp/%#x to %#RGp/%#x: %Rrc"),
1533	pPciDev->pszNameR3, pPciDev->Int.s.CTX_SUFF(pDevIns)->iInstance, iRegion,
1534	pPciDev->Int.s.aIORegions[iRegion].size, pPciDev->Int.s.aIORegions[iRegion].type,
1535	paIoRegions[iRegion].size, paIoRegions[iRegion].type, rc);
1536	}
1537	pPciDev->Int.s.aIORegions[iRegion].type = paIoRegions[iRegion].type;
1538	pPciDev->Int.s.aIORegions[iRegion].size = paIoRegions[iRegion].size;
1539	}
1540	}
1541	}
1542	/* Old saved state without sizes and types. Do a special hook call to give
1543	devices with changes a chance to adjust resources back to old values. */
1544	else if (pPciDev->pfnRegionLoadChangeHookR3)
1545	{
1546	rc = pPciDev->pfnRegionLoadChangeHookR3(pPciDev->Int.s.pDevInsR3, pPciDev, UINT32_MAX, RTGCPHYS_MAX, (PCIADDRESSSPACE)-1,
1547	devpciR3CommonRestoreOldSetRegion, NULL);
1548	if (RT_FAILURE(rc))
1549	return pHlp->pfnSSMSetLoadError(pSSM, rc, RT_SRC_POS, N_("Device %s/%u failed to resize its resources: %Rrc"),
1550	pPciDev->pszNameR3, pPciDev->Int.s.CTX_SUFF(pDevIns)->iInstance, rc);
1551	}
1552	return VINF_SUCCESS;
1553	}
1554
1555
1556	/**
1557	* Common worker for ich9pciR3LoadExec and ich9pcibridgeR3LoadExec.
1558	*
1559	* @returns VBox status code.
1560	* @param pDevIns The device instance of the bus.
1561	* @param pBus The bus which data is being loaded.
1562	* @param pSSM The saved state handle.
1563	* @param uVersion The data version.
1564	* @param uPass The pass.
1565	*/
1566	static int ich9pciR3CommonLoadExec(PPDMDEVINS pDevIns, PDEVPCIBUS pBus, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
1567	{
1568	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
1569	uint32_t u32;
1570	int rc;
1571
1572	Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
1573	if ( uVersion < VBOX_ICH9PCI_SAVED_STATE_VERSION_MSI
1574	\|\| uVersion > VBOX_ICH9PCI_SAVED_STATE_VERSION)
1575	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
1576
1577	/*
1578	* Iterate thru all the devices and write 0 to the COMMAND register so
1579	* that all the memory is unmapped before we start restoring the saved
1580	* mapping locations.
1581	*
1582	* The register value is restored afterwards so we can do proper
1583	* LogRels in devpciR3CommonRestoreConfig.
1584	*/
1585	for (uint32_t uDevFn = 0; uDevFn < RT_ELEMENTS(pBus->apDevices); uDevFn++)
1586	{
1587	PPDMPCIDEV pDev = pBus->apDevices[uDevFn];
1588	if (pDev)
1589	{
1590	/* safe, only needs to go to the config space array */
1591	uint16_t u16 = PDMPciDevGetCommand(pDev);
1592	devpciR3SetCfg(pDevIns, pDev, VBOX_PCI_COMMAND, 0 /u32Value/, 2 /cb/);
1593	/* safe, only needs to go to the config space array */
1594	PDMPciDevSetCommand(pDev, u16);
1595	/* safe, only needs to go to the config space array */
1596	Assert(PDMPciDevGetCommand(pDev) == u16);
1597	}
1598	}
1599
1600	/*
1601	* Iterate all the devices.
1602	*/
1603	for (uint32_t uDevFn = 0;; uDevFn++)
1604	{
1605	/* index / terminator */
1606	rc = pHlp->pfnSSMGetU32(pSSM, &u32);
1607	if (RT_FAILURE(rc))
1608	break;
1609	if (u32 == (uint32_t)~0)
1610	break;
1611	AssertLogRelMsgBreak(u32 < RT_ELEMENTS(pBus->apDevices) && u32 >= uDevFn, ("u32=%#x uDevFn=%#x\n", u32, uDevFn));
1612
1613	/* skip forward to the device checking that no new devices are present. */
1614	PPDMPCIDEV pDev;
1615	for (; uDevFn < u32; uDevFn++)
1616	{
1617	pDev = pBus->apDevices[uDevFn];
1618	if (pDev)
1619	{
1620	/* safe, only needs to go to the config space array */
1621	LogRel(("PCI: New device in slot %#x, %s (vendor=%#06x device=%#06x)\n", uDevFn, pDev->pszNameR3,
1622	PDMPciDevGetVendorId(pDev), PDMPciDevGetDeviceId(pDev)));
1623	if (pHlp->pfnSSMHandleGetAfter(pSSM) != SSMAFTER_DEBUG_IT)
1624	{
1625	/* safe, only needs to go to the config space array */
1626	rc = pHlp->pfnSSMSetCfgError(pSSM, RT_SRC_POS, N_("New device in slot %#x, %s (vendor=%#06x device=%#06x)"),
1627	uDevFn, pDev->pszNameR3, PDMPciDevGetVendorId(pDev), PDMPciDevGetDeviceId(pDev));
1628	break;
1629	}
1630	}
1631	}
1632	if (RT_FAILURE(rc))
1633	break;
1634	pDev = pBus->apDevices[uDevFn];
1635
1636	/* get the data */
1637	union
1638	{
1639	PDMPCIDEV DevTmp;
1640	uint8_t abPadding[RT_UOFFSETOF(PDMPCIDEV, abMsixState) + _32K + _16K]; /* the MSI-X state shouldn't be much more than 32KB. */
1641	} u;
1642	RT_ZERO(u);
1643	u.DevTmp.Int.s.fFlags = 0;
1644	u.DevTmp.Int.s.u8MsiCapOffset = 0;
1645	u.DevTmp.Int.s.u8MsiCapSize = 0;
1646	u.DevTmp.Int.s.u8MsixCapOffset = 0;
1647	u.DevTmp.Int.s.u8MsixCapSize = 0;
1648	u.DevTmp.Int.s.uIrqPinState = ~0; /* Invalid value in case we have an older saved state to force a state change in pciSetIrq. */
1649	uint32_t cbConfig = 256;
1650	if (uVersion >= VBOX_ICH9PCI_SAVED_STATE_VERSION_4KB_CFG_SPACE)
1651	{
1652	rc = pHlp->pfnSSMGetU32(pSSM, &cbConfig);
1653	AssertRCReturn(rc, rc);
1654	if (cbConfig != 256 && cbConfig != _4K)
1655	return pHlp->pfnSSMSetLoadError(pSSM, VERR_SSM_DATA_UNIT_FORMAT_CHANGED, RT_SRC_POS,
1656	"cbConfig=%#RX32, expected 0x100 or 0x1000", cbConfig);
1657	}
1658	pHlp->pfnSSMGetMem(pSSM, u.DevTmp.abConfig, cbConfig);
1659
1660	pHlp->pfnSSMGetU32(pSSM, &u.DevTmp.Int.s.fFlags);
1661	pHlp->pfnSSMGetS32(pSSM, &u.DevTmp.Int.s.uIrqPinState);
1662	pHlp->pfnSSMGetU8(pSSM, &u.DevTmp.Int.s.u8MsiCapOffset);
1663	pHlp->pfnSSMGetU8(pSSM, &u.DevTmp.Int.s.u8MsiCapSize);
1664	pHlp->pfnSSMGetU8(pSSM, &u.DevTmp.Int.s.u8MsixCapOffset);
1665	rc = pHlp->pfnSSMGetU8(pSSM, &u.DevTmp.Int.s.u8MsixCapSize);
1666	AssertRCReturn(rc, rc);
1667
1668	/* Load MSI-X page state */
1669	uint32_t cbMsixState = u.DevTmp.Int.s.u8MsixCapOffset != 0 ? _4K : 0;
1670	if (uVersion >= VBOX_ICH9PCI_SAVED_STATE_VERSION_4KB_CFG_SPACE)
1671	{
1672	rc = pHlp->pfnSSMGetU32(pSSM, &cbMsixState);
1673	AssertRCReturn(rc, rc);
1674	}
1675	if (cbMsixState)
1676	{
1677	if ( cbMsixState > (uint32_t)(pDev ? pDev->cbMsixState : _32K + _16K)
1678	\|\| cbMsixState > sizeof(u) - RT_UOFFSETOF(PDMPCIDEV, abMsixState))
1679	return pHlp->pfnSSMSetLoadError(pSSM, VERR_SSM_DATA_UNIT_FORMAT_CHANGED, RT_SRC_POS,
1680	"cbMsixState=%#RX32, expected at most RT_MIN(%#x, %#zx)",
1681	cbMsixState, (pDev ? pDev->cbMsixState : _32K + _16K),
1682	sizeof(u) - RT_UOFFSETOF(PDMPCIDEV, abMsixState));
1683	rc = pHlp->pfnSSMGetMem(pSSM, u.DevTmp.abMsixState, cbMsixState);
1684	AssertRCReturn(rc, rc);
1685	}
1686
1687	/* Load the region types and sizes. */
1688	if (uVersion >= VBOX_ICH9PCI_SAVED_STATE_VERSION_REGION_SIZES)
1689	{
1690	for (uint32_t iRegion = 0; iRegion < VBOX_PCI_NUM_REGIONS; iRegion++)
1691	{
1692	pHlp->pfnSSMGetU8(pSSM, &u.DevTmp.Int.s.aIORegions[iRegion].type);
1693	rc = pHlp->pfnSSMGetU64(pSSM, &u.DevTmp.Int.s.aIORegions[iRegion].size);
1694	AssertLogRelRCReturn(rc, rc);
1695	}
1696	}
1697
1698	/*
1699	* Check that it's still around.
1700	*/
1701	pDev = pBus->apDevices[uDevFn];
1702	if (!pDev)
1703	{
1704	/* safe, only needs to go to the config space array */
1705	LogRel(("PCI: Device in slot %#x has been removed! vendor=%#06x device=%#06x\n", uDevFn,
1706	PDMPciDevGetVendorId(&u.DevTmp), PDMPciDevGetDeviceId(&u.DevTmp)));
1707	if (pHlp->pfnSSMHandleGetAfter(pSSM) != SSMAFTER_DEBUG_IT)
1708	{
1709	/* safe, only needs to go to the config space array */
1710	rc = pHlp->pfnSSMSetCfgError(pSSM, RT_SRC_POS, N_("Device in slot %#x has been removed! vendor=%#06x device=%#06x"),
1711	uDevFn, PDMPciDevGetVendorId(&u.DevTmp), PDMPciDevGetDeviceId(&u.DevTmp));
1712	break;
1713	}
1714	continue;
1715	}
1716
1717	/* match the vendor id assuming that this will never be changed. */
1718	/* safe, only needs to go to the config space array */
1719	if (PDMPciDevGetVendorId(&u.DevTmp) != PDMPciDevGetVendorId(pDev))
1720	{
1721	/* safe, only needs to go to the config space array */
1722	rc = pHlp->pfnSSMSetCfgError(pSSM, RT_SRC_POS, N_("Device in slot %#x (%s) vendor id mismatch! saved=%.4Rhxs current=%.4Rhxs"),
1723	uDevFn, pDev->pszNameR3, PDMPciDevGetVendorId(&u.DevTmp), PDMPciDevGetVendorId(pDev));
1724	break;
1725	}
1726
1727	/* commit the loaded device config. */
1728	rc = devpciR3CommonRestoreRegions(pHlp, pSSM, pDev, u.DevTmp.Int.s.aIORegions,
1729	uVersion >= VBOX_ICH9PCI_SAVED_STATE_VERSION_REGION_SIZES);
1730	if (RT_FAILURE(rc))
1731	break;
1732	Assert(!pciDevIsPassthrough(pDev));
1733	devpciR3CommonRestoreConfig(pDevIns, pDev, &u.DevTmp.abConfig[0]);
1734
1735	pDev->Int.s.uIrqPinState = u.DevTmp.Int.s.uIrqPinState;
1736	pDev->Int.s.u8MsiCapOffset = u.DevTmp.Int.s.u8MsiCapOffset;
1737	pDev->Int.s.u8MsiCapSize = u.DevTmp.Int.s.u8MsiCapSize;
1738	pDev->Int.s.u8MsixCapOffset = u.DevTmp.Int.s.u8MsixCapOffset;
1739	pDev->Int.s.u8MsixCapSize = u.DevTmp.Int.s.u8MsixCapSize;
1740	if (u.DevTmp.Int.s.u8MsixCapSize != 0) /** @todo r=bird: Why isn't this checkin u8MsixCapOffset??? */
1741	{
1742	Assert(pDev->Int.s.cbMsixRegion != 0);
1743	Assert(pDev->cbMsixState != 0);
1744	memcpy(pDev->abMsixState, u.DevTmp.abMsixState, RT_MIN(pDev->Int.s.cbMsixRegion, _32K + _16K));
1745	}
1746	}
1747
1748	return rc;
1749	}
1750
1751	static DECLCALLBACK(int) ich9pciR3LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
1752	{
1753	PDEVPCIROOT pThis = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
1754	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
1755	PDEVPCIBUS pBus = &pThis->PciBus;
1756	uint32_t u32;
1757	int rc;
1758
1759	/* We ignore this version as there's no saved state with it anyway */
1760	if (uVersion <= VBOX_ICH9PCI_SAVED_STATE_VERSION_NOMSI)
1761	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
1762	if (uVersion > VBOX_ICH9PCI_SAVED_STATE_VERSION)
1763	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
1764
1765	/*
1766	* Bus state data.
1767	*/
1768	pHlp->pfnSSMGetU32(pSSM, &pThis->uConfigReg);
1769
1770	/*
1771	* Load IRQ states.
1772	*/
1773	for (unsigned i = 0; i < RT_ELEMENTS(pThis->auPciApicIrqLevels); i++)
1774	pHlp->pfnSSMGetU32V(pSSM, &pThis->auPciApicIrqLevels[i]);
1775
1776	/* separator */
1777	rc = pHlp->pfnSSMGetU32(pSSM, &u32);
1778	if (RT_FAILURE(rc))
1779	return rc;
1780	if (u32 != (uint32_t)~0)
1781	AssertMsgFailedReturn(("u32=%#x\n", u32), rc);
1782
1783	return ich9pciR3CommonLoadExec(pDevIns, pBus, pSSM, uVersion, uPass);
1784	}
1785
1786	static DECLCALLBACK(int) ich9pcibridgeR3LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
1787	{
1788	PDEVPCIBUS pThis = PDMINS_2_DATA(pDevIns, PDEVPCIBUS);
1789	return ich9pciR3CommonLoadExec(pDevIns, pThis, pSSM, uVersion, uPass);
1790	}
1791
1792
1793
1794	/* -=-=-=-=-=- Fake PCI BIOS Init -=-=-=-=-=- */
1795
1796
1797	void devpciR3BiosInitSetRegionAddress(PPDMDEVINS pDevIns, PDEVPCIBUS pBus, PPDMPCIDEV pPciDev, int iRegion, uint64_t addr)
1798	{
1799	NOREF(pBus);
1800	uint32_t uReg = devpciGetRegionReg(iRegion);
1801
1802	/* Read memory type first. */
1803	uint8_t uResourceType = devpciR3GetByte(pPciDev, uReg);
1804	bool f64Bit = (uResourceType & ((uint8_t)(PCI_ADDRESS_SPACE_BAR64 \| PCI_ADDRESS_SPACE_IO)))
1805	== PCI_ADDRESS_SPACE_BAR64;
1806
1807	Log(("Set region address: %02x:%02x.%d region %d address=%RX64%s\n",
1808	pBus->iBus, pPciDev->uDevFn >> 3, pPciDev->uDevFn & 7, iRegion, addr, f64Bit ? " (64-bit)" : ""));
1809
1810	/* Write address of the device. */
1811	devpciR3SetDWord(pDevIns, pPciDev, uReg, (uint32_t)addr);
1812	if (f64Bit)
1813	devpciR3SetDWord(pDevIns, pPciDev, uReg + 4, (uint32_t)(addr >> 32));
1814	}
1815
1816
1817	static void ich9pciBiosInitBridge(PPDMDEVINS pDevIns, PDEVPCIROOT pPciRoot, PDEVPCIBUS pBus)
1818	{
1819	PPDMPCIDEV pBridge = pDevIns->apPciDevs[0];
1820	Log(("BIOS init bridge: %02x:%02x.%d\n", pBus->iBus, pBridge->uDevFn >> 3, pBridge->uDevFn & 7));
1821
1822	/*
1823	* The I/O range for the bridge must be aligned to a 4KB boundary.
1824	* This does not change anything really as the access to the device is not going
1825	* through the bridge but we want to be compliant to the spec.
1826	*/
1827	if ((pPciRoot->uPciBiosIo % _4K) != 0)
1828	{
1829	pPciRoot->uPciBiosIo = RT_ALIGN_32(pPciRoot->uPciBiosIo, _4K);
1830	LogFunc(("Aligned I/O start address. New address %#x\n", pPciRoot->uPciBiosIo));
1831	}
1832	devpciR3SetByte(pDevIns, pBridge, VBOX_PCI_IO_BASE, (pPciRoot->uPciBiosIo >> 8) & 0xf0);
1833
1834	/* The MMIO range for the bridge must be aligned to a 1MB boundary. */
1835	if ((pPciRoot->uPciBiosMmio % _1M) != 0)
1836	{
1837	pPciRoot->uPciBiosMmio = RT_ALIGN_32(pPciRoot->uPciBiosMmio, _1M);
1838	LogFunc(("Aligned MMIO start address. New address %#x\n", pPciRoot->uPciBiosMmio));
1839	}
1840	devpciR3SetWord(pDevIns, pBridge, VBOX_PCI_MEMORY_BASE, (pPciRoot->uPciBiosMmio >> 16) & UINT32_C(0xffff0));
1841
1842	/* Save values to compare later to. */
1843	uint32_t u32IoAddressBase = pPciRoot->uPciBiosIo;
1844	uint32_t u32MMIOAddressBase = pPciRoot->uPciBiosMmio;
1845
1846	/* Init all devices behind the bridge (recursing to further buses). */
1847	ich9pciBiosInitAllDevicesOnBus(pDevIns, pPciRoot, pBus);
1848
1849	/*
1850	* Set I/O limit register. If there is no device with I/O space behind the
1851	* bridge we set a lower value than in the base register.
1852	*/
1853	if (u32IoAddressBase != pPciRoot->uPciBiosIo)
1854	{
1855	/* Need again alignment to a 4KB boundary. */
1856	pPciRoot->uPciBiosIo = RT_ALIGN_32(pPciRoot->uPciBiosIo, _4K);
1857	devpciR3SetByte(pDevIns, pBridge, VBOX_PCI_IO_LIMIT, ((pPciRoot->uPciBiosIo - 1) >> 8) & 0xf0);
1858	}
1859	else
1860	{
1861	devpciR3SetByte(pDevIns, pBridge, VBOX_PCI_IO_BASE, 0xf0);
1862	devpciR3SetByte(pDevIns, pBridge, VBOX_PCI_IO_LIMIT, 0x00);
1863	}
1864
1865	/* Same with the MMIO limit register but with 1MB boundary here. */
1866	if (u32MMIOAddressBase != pPciRoot->uPciBiosMmio)
1867	{
1868	pPciRoot->uPciBiosMmio = RT_ALIGN_32(pPciRoot->uPciBiosMmio, _1M);
1869	devpciR3SetWord(pDevIns, pBridge, VBOX_PCI_MEMORY_LIMIT, ((pPciRoot->uPciBiosMmio - 1) >> 16) & UINT32_C(0xfff0));
1870	}
1871	else
1872	{
1873	devpciR3SetWord(pDevIns, pBridge, VBOX_PCI_MEMORY_BASE, 0xfff0);
1874	devpciR3SetWord(pDevIns, pBridge, VBOX_PCI_MEMORY_LIMIT, 0x0000);
1875	}
1876
1877	/*
1878	* Set the prefetch base and limit registers. We currently have no device with a prefetchable region
1879	* which may be behind a bridge. That's why it is unconditionally disabled here atm by writing a higher value into
1880	* the base register than in the limit register.
1881	*/
1882	devpciR3SetWord(pDevIns, pBridge, VBOX_PCI_PREF_MEMORY_BASE, 0xfff0);
1883	devpciR3SetWord(pDevIns, pBridge, VBOX_PCI_PREF_MEMORY_LIMIT, 0x0000);
1884	devpciR3SetDWord(pDevIns, pBridge, VBOX_PCI_PREF_BASE_UPPER32, 0x00000000);
1885	devpciR3SetDWord(pDevIns, pBridge, VBOX_PCI_PREF_LIMIT_UPPER32, 0x00000000);
1886	}
1887
1888	static int ich9pciBiosInitDeviceGetRegions(PPDMPCIDEV pPciDev)
1889	{
1890	uint8_t uHeaderType = devpciR3GetByte(pPciDev, VBOX_PCI_HEADER_TYPE) & 0x7f;
1891	if (uHeaderType == 0x00)
1892	/* Ignore ROM region here, which is included in VBOX_PCI_NUM_REGIONS. */
1893	return VBOX_PCI_NUM_REGIONS - 1;
1894	else if (uHeaderType == 0x01)
1895	/* PCI bridges have 2 BARs. */
1896	return 2;
1897	else
1898	{
1899	AssertMsgFailed(("invalid header type %#x\n", uHeaderType));
1900	return 0;
1901	}
1902	}
1903
1904	static void ich9pciBiosInitDeviceBARs(PPDMDEVINS pDevIns, PDEVPCIROOT pPciRoot, PDEVPCIBUS pBus, PPDMPCIDEV pPciDev)
1905	{
1906	int cRegions = ich9pciBiosInitDeviceGetRegions(pPciDev);
1907	bool fSuppressMem = false;
1908	bool fActiveMemRegion = false;
1909	bool fActiveIORegion = false;
1910	for (int iRegion = 0; iRegion < cRegions; iRegion++)
1911	{
1912	uint32_t u32Address = devpciGetRegionReg(iRegion);
1913
1914	/* Calculate size - we write all 1s into the BAR, and then evaluate which bits
1915	are cleared. */
1916	uint8_t u8ResourceType = devpciR3GetByte(pPciDev, u32Address);
1917
1918	bool fPrefetch = (u8ResourceType & ((uint8_t)(PCI_ADDRESS_SPACE_MEM_PREFETCH \| PCI_ADDRESS_SPACE_IO)))
1919	== PCI_ADDRESS_SPACE_MEM_PREFETCH;
1920	bool f64Bit = (u8ResourceType & ((uint8_t)(PCI_ADDRESS_SPACE_BAR64 \| PCI_ADDRESS_SPACE_IO)))
1921	== PCI_ADDRESS_SPACE_BAR64;
1922	bool fIsPio = ((u8ResourceType & PCI_ADDRESS_SPACE_IO) == PCI_ADDRESS_SPACE_IO);
1923	uint64_t cbRegSize64 = 0;
1924
1925	/* Hack: initialize prefetchable BARs for devices on the root bus
1926	* early, but for all other prefetchable BARs do it after the
1927	* non-prefetchable BARs are initialized on all buses. */
1928	if (fPrefetch && pBus->iBus != 0)
1929	{
1930	fSuppressMem = true;
1931	if (f64Bit)
1932	iRegion++; /* skip next region */
1933	continue;
1934	}
1935
1936	if (f64Bit)
1937	{
1938	devpciR3SetDWord(pDevIns, pPciDev, u32Address, UINT32_C(0xffffffff));
1939	devpciR3SetDWord(pDevIns, pPciDev, u32Address+4, UINT32_C(0xffffffff));
1940	cbRegSize64 = RT_MAKE_U64(devpciR3GetDWord(pPciDev, u32Address),
1941	devpciR3GetDWord(pPciDev, u32Address+4));
1942	cbRegSize64 &= ~UINT64_C(0x0f);
1943	cbRegSize64 = (~cbRegSize64) + 1;
1944
1945	/* No 64-bit PIO regions possible. */
1946	#ifndef DEBUG_bird /* EFI triggers this for DevAHCI. */
1947	AssertMsg((u8ResourceType & PCI_ADDRESS_SPACE_IO) == 0, ("type=%#x rgn=%d\n", u8ResourceType, iRegion));
1948	#endif
1949	}
1950	else
1951	{
1952	uint32_t cbRegSize32;
1953	devpciR3SetDWord(pDevIns, pPciDev, u32Address, UINT32_C(0xffffffff));
1954	cbRegSize32 = devpciR3GetDWord(pPciDev, u32Address);
1955
1956	/* Clear resource information depending on resource type. */
1957	if (fIsPio) /* PIO */
1958	cbRegSize32 &= ~UINT32_C(0x01);
1959	else /* MMIO */
1960	cbRegSize32 &= ~UINT32_C(0x0f);
1961
1962	/*
1963	* Invert all bits and add 1 to get size of the region.
1964	* (From PCI implementation note)
1965	*/
1966	if (fIsPio && (cbRegSize32 & UINT32_C(0xffff0000)) == 0)
1967	cbRegSize32 = (~(cbRegSize32 \| UINT32_C(0xffff0000))) + 1;
1968	else
1969	cbRegSize32 = (~cbRegSize32) + 1;
1970
1971	cbRegSize64 = cbRegSize32;
1972	}
1973	Log2Func(("Size of region %u for device %d on bus %d is %lld\n", iRegion, pPciDev->uDevFn, pBus->iBus, cbRegSize64));
1974
1975	if (cbRegSize64)
1976	{
1977	/* Try 32-bit base first. */
1978	uint32_t* paddr = fIsPio ? &pPciRoot->uPciBiosIo : &pPciRoot->uPciBiosMmio;
1979	uint64_t uNew = *paddr;
1980	/* Align starting address to region size. */
1981	uNew = (uNew + cbRegSize64 - 1) & ~(cbRegSize64 - 1);
1982	if (fIsPio)
1983	uNew &= UINT32_C(0xffff);
1984	/* Unconditionally exclude I/O-APIC/HPET/ROM. Pessimistic, but better than causing a mess. */
1985	if ( !uNew
1986	\|\| (uNew <= UINT32_C(0xffffffff) && uNew + cbRegSize64 - 1 >= UINT32_C(0xfec00000))
1987	\|\| uNew >= _4G)
1988	{
1989	/* Only prefetchable regions can be placed above 4GB, as the
1990	* address decoder for non-prefetchable addresses in bridges
1991	* is limited to 32 bits. */
1992	if (f64Bit && fPrefetch)
1993	{
1994	/* Map a 64-bit region above 4GB. */
1995	Assert(!fIsPio);
1996	uNew = pPciRoot->uPciBiosMmio64;
1997	/* Align starting address to region size. */
1998	uNew = (uNew + cbRegSize64 - 1) & ~(cbRegSize64 - 1);
1999	LogFunc(("Start address of 64-bit MMIO region %u/%u is %#llx\n", iRegion, iRegion + 1, uNew));
2000	devpciR3BiosInitSetRegionAddress(pDevIns, pBus, pPciDev, iRegion, uNew);
2001	fActiveMemRegion = true;
2002	pPciRoot->uPciBiosMmio64 = uNew + cbRegSize64;
2003	Log2Func(("New 64-bit address is %#llx\n", pPciRoot->uPciBiosMmio64));
2004	}
2005	else
2006	{
2007	uint16_t uVendor = devpciR3GetWord(pPciDev, VBOX_PCI_VENDOR_ID);
2008	uint16_t uDevice = devpciR3GetWord(pPciDev, VBOX_PCI_DEVICE_ID);
2009	LogRel(("PCI: no space left for BAR%u of device %u/%u/%u (vendor=%#06x device=%#06x)\n",
2010	iRegion, pBus->iBus, pPciDev->uDevFn >> 3, pPciDev->uDevFn & 7, uVendor, uDevice)); /** @todo make this a VM start failure later. */
2011	/* Undo the mapping mess caused by the size probing. */
2012	devpciR3SetDWord(pDevIns, pPciDev, u32Address, UINT32_C(0));
2013	}
2014	}
2015	else
2016	{
2017	LogFunc(("Start address of %s region %u is %#x\n", (fIsPio ? "I/O" : "MMIO"), iRegion, uNew));
2018	devpciR3BiosInitSetRegionAddress(pDevIns, pBus, pPciDev, iRegion, uNew);
2019	if (fIsPio)
2020	fActiveIORegion = true;
2021	else
2022	fActiveMemRegion = true;
2023	*paddr = uNew + cbRegSize64;
2024	Log2Func(("New 32-bit address is %#x\n", *paddr));
2025	}
2026
2027	if (f64Bit)
2028	iRegion++; /* skip next region */
2029	}
2030	}
2031
2032	/* Update the command word appropriately. */
2033	uint16_t uCmd = devpciR3GetWord(pPciDev, VBOX_PCI_COMMAND);
2034	if (fActiveMemRegion && !fSuppressMem)
2035	uCmd \|= VBOX_PCI_COMMAND_MEMORY; /* Enable MMIO access. */
2036	if (fActiveIORegion)
2037	uCmd \|= VBOX_PCI_COMMAND_IO; /* Enable I/O space access. */
2038	devpciR3SetWord(pDevIns, pPciDev, VBOX_PCI_COMMAND, uCmd);
2039	}
2040
2041	static bool ich9pciBiosInitDevicePrefetchableBARs(PPDMDEVINS pDevIns, PDEVPCIROOT pPciRoot, PDEVPCIBUS pBus, PPDMPCIDEV pPciDev, bool fUse64Bit, bool fDryrun)
2042	{
2043	int cRegions = ich9pciBiosInitDeviceGetRegions(pPciDev);
2044	bool fActiveMemRegion = false;
2045	for (int iRegion = 0; iRegion < cRegions; iRegion++)
2046	{
2047	uint32_t u32Address = devpciGetRegionReg(iRegion);
2048	uint8_t u8ResourceType = devpciR3GetByte(pPciDev, u32Address);
2049	bool fPrefetch = (u8ResourceType & ((uint8_t)(PCI_ADDRESS_SPACE_MEM_PREFETCH \| PCI_ADDRESS_SPACE_IO)))
2050	== PCI_ADDRESS_SPACE_MEM_PREFETCH;
2051	bool f64Bit = (u8ResourceType & ((uint8_t)(PCI_ADDRESS_SPACE_BAR64 \| PCI_ADDRESS_SPACE_IO)))
2052	== PCI_ADDRESS_SPACE_BAR64;
2053	uint64_t cbRegSize64 = 0;
2054
2055	/* Everything besides prefetchable regions has been set up already. */
2056	if (!fPrefetch)
2057	continue;
2058
2059	if (f64Bit)
2060	{
2061	devpciR3SetDWord(pDevIns, pPciDev, u32Address, UINT32_C(0xffffffff));
2062	devpciR3SetDWord(pDevIns, pPciDev, u32Address+4, UINT32_C(0xffffffff));
2063	cbRegSize64 = RT_MAKE_U64(devpciR3GetDWord(pPciDev, u32Address),
2064	devpciR3GetDWord(pPciDev, u32Address+4));
2065	cbRegSize64 &= ~UINT64_C(0x0f);
2066	cbRegSize64 = (~cbRegSize64) + 1;
2067	}
2068	else
2069	{
2070	uint32_t cbRegSize32;
2071	devpciR3SetDWord(pDevIns, pPciDev, u32Address, UINT32_C(0xffffffff));
2072	cbRegSize32 = devpciR3GetDWord(pPciDev, u32Address);
2073	cbRegSize32 &= ~UINT32_C(0x0f);
2074	cbRegSize32 = (~cbRegSize32) + 1;
2075
2076	cbRegSize64 = cbRegSize32;
2077	}
2078	Log2Func(("Size of region %u for device %d on bus %d is %lld\n", iRegion, pPciDev->uDevFn, pBus->iBus, cbRegSize64));
2079
2080	if (cbRegSize64)
2081	{
2082	uint64_t uNew;
2083	if (!fUse64Bit)
2084	{
2085	uNew = pPciRoot->uPciBiosMmio;
2086	/* Align starting address to region size. */
2087	uNew = (uNew + cbRegSize64 - 1) & ~(cbRegSize64 - 1);
2088	/* Unconditionally exclude I/O-APIC/HPET/ROM. Pessimistic, but better than causing a mess. Okay for BIOS. */
2089	if ( !uNew
2090	\|\| (uNew <= UINT32_C(0xffffffff) && uNew + cbRegSize64 - 1 >= UINT32_C(0xfec00000))
2091	\|\| uNew >= _4G)
2092	{
2093	Log2Func(("region #%u: Rejecting address range: %#x LB %#RX64\n", iRegion, uNew, cbRegSize64));
2094	Assert(fDryrun);
2095	return true;
2096	}
2097	if (!fDryrun)
2098	{
2099	LogFunc(("Start address of MMIO region %u is %#x\n", iRegion, uNew));
2100	devpciR3BiosInitSetRegionAddress(pDevIns, pBus, pPciDev, iRegion, uNew);
2101	fActiveMemRegion = true;
2102	}
2103	pPciRoot->uPciBiosMmio = uNew + cbRegSize64;
2104	}
2105	else
2106	{
2107	/* Can't handle 32-bit BARs when forcing 64-bit allocs. */
2108	if (!f64Bit)
2109	{
2110	Assert(fDryrun);
2111	return true;
2112	}
2113	uNew = pPciRoot->uPciBiosMmio64;
2114	/* Align starting address to region size. */
2115	uNew = (uNew + cbRegSize64 - 1) & ~(cbRegSize64 - 1);
2116	pPciRoot->uPciBiosMmio64 = uNew + cbRegSize64;
2117	if (!fDryrun)
2118	{
2119	LogFunc(("Start address of 64-bit MMIO region %u/%u is %#llx\n", iRegion, iRegion + 1, uNew));
2120	devpciR3BiosInitSetRegionAddress(pDevIns, pBus, pPciDev, iRegion, uNew);
2121	fActiveMemRegion = true;
2122	}
2123	}
2124
2125	if (f64Bit)
2126	iRegion++; /* skip next region */
2127	}
2128	}
2129
2130	if (!fDryrun)
2131	{
2132	/* Update the command word appropriately. */
2133	uint16_t uCmd = devpciR3GetWord(pPciDev, VBOX_PCI_COMMAND);
2134	if (fActiveMemRegion)
2135	uCmd \|= VBOX_PCI_COMMAND_MEMORY; /* Enable MMIO access. */
2136	devpciR3SetWord(pDevIns, pPciDev, VBOX_PCI_COMMAND, uCmd);
2137	}
2138	else
2139	Assert(!fActiveMemRegion);
2140
2141	return false;
2142	}
2143
2144	static bool ich9pciBiosInitBridgePrefetchable(PPDMDEVINS pDevIns, PDEVPCIROOT pPciRoot, PDEVPCIBUS pBus, bool fUse64Bit, bool fDryrun)
2145	{
2146	PPDMPCIDEV pBridge = pDevIns->apPciDevs[0];
2147	Log(("BIOS init bridge (prefetch): %02x:%02x.%d use64bit=%d dryrun=%d\n", pBus->iBus, pBridge->uDevFn >> 3, pBridge->uDevFn & 7, fUse64Bit, fDryrun));
2148
2149	pPciRoot->uPciBiosMmio = RT_ALIGN_32(pPciRoot->uPciBiosMmio, _1M);
2150	pPciRoot->uPciBiosMmio64 = RT_ALIGN_64(pPciRoot->uPciBiosMmio64, _1M);
2151
2152	/* Save values to compare later to. */
2153	uint32_t u32MMIOAddressBase = pPciRoot->uPciBiosMmio;
2154	uint64_t u64MMIOAddressBase = pPciRoot->uPciBiosMmio64;
2155
2156	/* Init all devices behind the bridge (recursing to further buses). */
2157	bool fRes = ich9pciBiosInitAllDevicesPrefetchableOnBus(pDevIns, pPciRoot, pBus, fUse64Bit, fDryrun);
2158	if (fDryrun)
2159	return fRes;
2160	Assert(!fRes);
2161
2162	/* Set prefetchable MMIO limit register with 1MB boundary. */
2163	uint64_t uBase, uLimit;
2164	if (fUse64Bit)
2165	{
2166	if (u64MMIOAddressBase == pPciRoot->uPciBiosMmio64)
2167	return false;
2168	uBase = u64MMIOAddressBase;
2169	uLimit = RT_ALIGN_64(pPciRoot->uPciBiosMmio64, _1M) - 1;
2170	}
2171	else
2172	{
2173	if (u32MMIOAddressBase == pPciRoot->uPciBiosMmio)
2174	return false;
2175	uBase = u32MMIOAddressBase;
2176	uLimit = RT_ALIGN_32(pPciRoot->uPciBiosMmio, _1M) - 1;
2177	}
2178	devpciR3SetDWord(pDevIns, pBridge, VBOX_PCI_PREF_BASE_UPPER32, uBase >> 32);
2179	devpciR3SetWord(pDevIns, pBridge, VBOX_PCI_PREF_MEMORY_BASE, (uint32_t)(uBase >> 16) & UINT32_C(0xfff0));
2180	devpciR3SetDWord(pDevIns, pBridge, VBOX_PCI_PREF_LIMIT_UPPER32, uLimit >> 32);
2181	devpciR3SetWord(pDevIns, pBridge, VBOX_PCI_PREF_MEMORY_LIMIT, (uint32_t)(uLimit >> 16) & UINT32_C(0xfff0));
2182
2183	return false;
2184	}
2185
2186	static bool ich9pciBiosInitAllDevicesPrefetchableOnBus(PPDMDEVINS pDevIns, PDEVPCIROOT pPciRoot, PDEVPCIBUS pBus,
2187	bool fUse64Bit, bool fDryrun)
2188	{
2189	/* First pass: assign resources to all devices. */
2190	for (uint32_t uDevFn = 0; uDevFn < RT_ELEMENTS(pBus->apDevices); uDevFn++)
2191	{
2192	PPDMPCIDEV pPciDev = pBus->apDevices[uDevFn];
2193
2194	/* check if device is present */
2195	if (!pPciDev)
2196	continue;
2197
2198	Log(("BIOS init device (prefetch): %02x:%02x.%d\n", pBus->iBus, uDevFn >> 3, uDevFn & 7));
2199
2200	/* prefetchable memory mappings */
2201	bool fRes = ich9pciBiosInitDevicePrefetchableBARs(pDevIns, pPciRoot, pBus, pPciDev, fUse64Bit, fDryrun);
2202	if (fRes)
2203	{
2204	Assert(fDryrun);
2205	return fRes;
2206	}
2207	}
2208
2209	/* Second pass: handle bridges recursively. */
2210	for (uint32_t iBridge = 0; iBridge < pBus->cBridges; iBridge++)
2211	{
2212	PPDMPCIDEV pBridge = pBus->papBridgesR3[iBridge];
2213	AssertMsg(pBridge && pciDevIsPci2PciBridge(pBridge),
2214	("Device is not a PCI bridge but on the list of PCI bridges\n"));
2215	PDEVPCIBUS pChildBus = PDMINS_2_DATA(pBridge->Int.s.CTX_SUFF(pDevIns), PDEVPCIBUS);
2216
2217	bool fRes = ich9pciBiosInitBridgePrefetchable(pDevIns, pPciRoot, pChildBus, fUse64Bit, fDryrun);
2218	if (fRes)
2219	{
2220	Assert(fDryrun);
2221	return fRes;
2222	}
2223	}
2224	return false;
2225	}
2226
2227	static void ich9pciBiosInitAllDevicesOnBus(PPDMDEVINS pDevIns, PDEVPCIROOT pPciRoot, PDEVPCIBUS pBus)
2228	{
2229	PDEVPCIBUSCC pBusCC = PDMINS_2_DATA_CC(pDevIns, PDEVPCIBUSCC);
2230
2231	/* First pass: assign resources to all devices and map the interrupt. */
2232	for (uint32_t uDevFn = 0; uDevFn < RT_ELEMENTS(pBus->apDevices); uDevFn++)
2233	{
2234	PPDMPCIDEV pPciDev = pBus->apDevices[uDevFn];
2235
2236	/* check if device is present */
2237	if (!pPciDev)
2238	continue;
2239
2240	Log(("BIOS init device: %02x:%02x.%d\n", pBus->iBus, uDevFn >> 3, uDevFn & 7));
2241
2242	/* default memory mappings */
2243	ich9pciBiosInitDeviceBARs(pDevIns, pPciRoot, pBus, pPciDev);
2244	uint16_t uDevClass = devpciR3GetWord(pPciDev, VBOX_PCI_CLASS_DEVICE);
2245	switch (uDevClass)
2246	{
2247	case 0x0101:
2248	/* IDE controller */
2249	devpciR3SetWord(pDevIns, pPciDev, 0x40, 0x8000); /* enable IDE0 */
2250	devpciR3SetWord(pDevIns, pPciDev, 0x42, 0x8000); /* enable IDE1 */
2251	break;
2252	case 0x0300:
2253	{
2254	/* VGA controller */
2255
2256	/* NB: Default Bochs VGA LFB address is 0xE0000000. Old guest
2257	* software may break if the framebuffer isn't mapped there.
2258	*/
2259
2260	/*
2261	* Legacy VGA I/O ports are implicitly decoded by a VGA class device. But
2262	* only the framebuffer (i.e., a memory region) is explicitly registered via
2263	* ich9pciSetRegionAddress, so don't forget to enable I/O decoding.
2264	*/
2265	uint16_t uCmd = devpciR3GetWord(pPciDev, VBOX_PCI_COMMAND);
2266	devpciR3SetWord(pDevIns, pPciDev, VBOX_PCI_COMMAND, uCmd \| VBOX_PCI_COMMAND_IO);
2267	break;
2268	}
2269	#ifdef VBOX_WITH_IOMMU_AMD
2270	case 0x0806:
2271	{
2272	/* IOMMU. */
2273	uint16_t const uVendorId = devpciR3GetWord(pPciDev, VBOX_PCI_VENDOR_ID);
2274	if (uVendorId == IOMMU_PCI_VENDOR_ID)
2275	{
2276	/* AMD. */
2277	devpciR3SetDWord(pDevIns, pPciDev, IOMMU_PCI_OFF_BASE_ADDR_REG_LO,
2278	IOMMU_MMIO_BASE_ADDR \| RT_BIT(0)); /* enable base address (bit 0). */
2279	}
2280	break;
2281	}
2282	#endif
2283	default:
2284	break;
2285	}
2286
2287	/* map the interrupt */
2288	uint8_t iPin = devpciR3GetByte(pPciDev, VBOX_PCI_INTERRUPT_PIN);
2289	if (iPin != 0)
2290	{
2291	iPin--;
2292
2293	/* We need to go up to the host bus to see which irq pin this
2294	device will use there. See logic in ich9pcibridgeSetIrq(). */
2295	uint32_t idxPdmParentBus;
2296	PPDMDEVINS pDevInsParent = pDevIns;
2297	while ((idxPdmParentBus = pDevInsParent->apPciDevs[0]->Int.s.idxPdmBus) != 0)
2298	{
2299	/* Get the pin the device would assert on the bridge. */
2300	iPin = ((pDevInsParent->apPciDevs[0]->uDevFn >> 3) + iPin) & 3;
2301
2302	pDevInsParent = pBusCC->pPciHlpR3->pfnGetBusByNo(pDevIns, idxPdmParentBus);
2303	AssertLogRelBreak(pDevInsParent);
2304	}
2305
2306	int iIrq = aPciIrqs[ich9pciSlotGetPirq(pBus->iBus, uDevFn, iPin)];
2307	Log(("Using pin %d and IRQ %d for device %02x:%02x.%d\n",
2308	iPin, iIrq, pBus->iBus, uDevFn>>3, uDevFn&7));
2309	devpciR3SetByte(pDevIns, pPciDev, VBOX_PCI_INTERRUPT_LINE, iIrq);
2310	}
2311	}
2312
2313	/* Second pass: handle bridges recursively. */
2314	for (uint32_t iBridge = 0; iBridge < pBus->cBridges; iBridge++)
2315	{
2316	PPDMPCIDEV pBridge = pBus->papBridgesR3[iBridge];
2317	AssertMsg(pBridge && pciDevIsPci2PciBridge(pBridge),
2318	("Device is not a PCI bridge but on the list of PCI bridges\n"));
2319	PDEVPCIBUS pChildBus = PDMINS_2_DATA(pBridge->Int.s.CTX_SUFF(pDevIns), PDEVPCIBUS);
2320
2321	ich9pciBiosInitBridge(pDevIns, pPciRoot, pChildBus);
2322	}
2323
2324	/* Third pass (only for bus 0): set up prefetchable BARs recursively. */
2325	if (pBus->iBus == 0)
2326	{
2327	for (uint32_t iBridge = 0; iBridge < pBus->cBridges; iBridge++)
2328	{
2329	PPDMPCIDEV pBridge = pBus->papBridgesR3[iBridge];
2330	AssertMsg(pBridge && pciDevIsPci2PciBridge(pBridge),
2331	("Device is not a PCI bridge but on the list of PCI bridges\n"));
2332	PDEVPCIBUS pChildBus = PDMINS_2_DATA(pBridge->Int.s.CTX_SUFF(pDevIns), PDEVPCIBUS);
2333
2334	Log(("BIOS init prefetchable memory behind bridge: %02x:%02x.%d\n", pChildBus->iBus, pBridge->uDevFn >> 3, pBridge->uDevFn & 7));
2335	/* Save values for the prefetchable dryruns. */
2336	uint32_t u32MMIOAddressBase = pPciRoot->uPciBiosMmio;
2337	uint64_t u64MMIOAddressBase = pPciRoot->uPciBiosMmio64;
2338
2339	bool fProbe = ich9pciBiosInitBridgePrefetchable(pDevIns, pPciRoot, pChildBus, false /* fUse64Bit /, true / fDryrun */);
2340	pPciRoot->uPciBiosMmio = u32MMIOAddressBase;
2341	pPciRoot->uPciBiosMmio64 = u64MMIOAddressBase;
2342	if (fProbe)
2343	{
2344	fProbe = ich9pciBiosInitBridgePrefetchable(pDevIns, pPciRoot, pChildBus, true /* fUse64Bit /, true / fDryrun */);
2345	pPciRoot->uPciBiosMmio = u32MMIOAddressBase;
2346	pPciRoot->uPciBiosMmio64 = u64MMIOAddressBase;
2347	if (fProbe)
2348	LogRel(("PCI: unresolvable prefetchable memory behind bridge %02x:%02x.%d\n", pChildBus->iBus, pBridge->uDevFn >> 3, pBridge->uDevFn & 7));
2349	else
2350	ich9pciBiosInitBridgePrefetchable(pDevIns, pPciRoot, pChildBus, true /* fUse64Bit /, false / fDryrun */);
2351	}
2352	else
2353	ich9pciBiosInitBridgePrefetchable(pDevIns, pPciRoot, pChildBus, false /* fUse64Bit /, false / fDryrun */);
2354	}
2355	}
2356	}
2357
2358	/**
2359	* Initializes bridges registers used for routing.
2360	*
2361	* We ASSUME PDM bus assignments are the same as the PCI bus assignments and
2362	* will complain if we find any conflicts. This because it is just soo much
2363	* simpler to have the two numbers match one another by default.
2364	*
2365	* @returns Max subordinate bus number.
2366	* @param pDevIns The device instance of the bus.
2367	* @param pPciRoot Global device instance data used to generate unique bus numbers.
2368	* @param pBus The PCI bus to initialize.
2369	* @param pbmUsed Pointer to a 32-bit bitmap tracking which device
2370	* (ranges) has been used.
2371	* @param uBusPrimary The primary bus number the bus is connected to.
2372	*/
2373	static uint8_t ich9pciBiosInitBridgeTopology(PPDMDEVINS pDevIns, PDEVPCIROOT pPciRoot, PDEVPCIBUS pBus,
2374	uint32_t *pbmUsed, uint8_t uBusPrimary)
2375	{
2376	PPDMPCIDEV pBridgeDev = pDevIns->apPciDevs[0];
2377
2378	/* Check if the PDM bus assignment makes sense. */
2379	AssertLogRelMsg(!(*pbmUsed & RT_BIT_32(pBus->iBus)),
2380	("PCIBIOS: Bad PCI bridge config! Conflict for bus %#x. Make sure to instantiate bridges for a sub-trees in sequence!\n",
2381	pBus->iBus));
2382	*pbmUsed \|= RT_BIT_32(pBus->iBus);
2383
2384	/* Set only if we are not on the root bus, it has no primary bus attached. */
2385	if (pBus->iBus != 0)
2386	{
2387	devpciR3SetByte(pDevIns, pBridgeDev, VBOX_PCI_PRIMARY_BUS, uBusPrimary);
2388	devpciR3SetByte(pDevIns, pBridgeDev, VBOX_PCI_SECONDARY_BUS, pBus->iBus);
2389	/* Since the subordinate bus value can only be finalized once we
2390	* finished recursing through everything behind the bridge, the only
2391	* solution is temporarily configuring the subordinate to the maximum
2392	* possible value. This makes sure that the config space accesses work
2393	* (for our own sloppy emulation it apparently doesn't matter, but
2394	* this is vital for real PCI bridges/devices in passthrough mode). */
2395	devpciR3SetByte(pDevIns, pBridgeDev, VBOX_PCI_SUBORDINATE_BUS, 0xff);
2396	}
2397
2398	uint8_t uMaxSubNum = pBus->iBus;
2399	for (uint32_t iBridge = 0; iBridge < pBus->cBridges; iBridge++)
2400	{
2401	PPDMPCIDEV pBridge = pBus->papBridgesR3[iBridge];
2402	AssertMsg(pBridge && pciDevIsPci2PciBridge(pBridge),
2403	("Device is not a PCI bridge but on the list of PCI bridges\n"));
2404	PDEVPCIBUS pChildBus = PDMINS_2_DATA(pBridge->Int.s.CTX_SUFF(pDevIns), PDEVPCIBUS);
2405	uint8_t uMaxChildSubBus = ich9pciBiosInitBridgeTopology(pDevIns, pPciRoot, pChildBus, pbmUsed, pBus->iBus);
2406	uMaxSubNum = RT_MAX(uMaxSubNum, uMaxChildSubBus);
2407	}
2408
2409	if (pBus->iBus != 0)
2410	devpciR3SetByte(pDevIns, pBridgeDev, VBOX_PCI_SUBORDINATE_BUS, uMaxSubNum);
2411	for (uint32_t i = pBus->iBus; i <= uMaxSubNum; i++)
2412	*pbmUsed \|= RT_BIT_32(i);
2413
2414	/* Make sure that transactions are able to get through the bridge. Not
2415	* strictly speaking necessary this early (before any device is set up),
2416	* but on the other hand it can't hurt either. */
2417	if (pBus->iBus != 0)
2418	devpciR3SetWord(pDevIns, pBridgeDev, VBOX_PCI_COMMAND,
2419	VBOX_PCI_COMMAND_IO
2420	\| VBOX_PCI_COMMAND_MEMORY
2421	\| VBOX_PCI_COMMAND_MASTER);
2422
2423	/* safe, only needs to go to the config space array */
2424	Log2Func(("for bus %p: primary=%d secondary=%d subordinate=%d\n", pBus,
2425	PDMPciDevGetByte(pBridgeDev, VBOX_PCI_PRIMARY_BUS),
2426	PDMPciDevGetByte(pBridgeDev, VBOX_PCI_SECONDARY_BUS),
2427	PDMPciDevGetByte(pBridgeDev, VBOX_PCI_SUBORDINATE_BUS) ));
2428
2429	return uMaxSubNum;
2430	}
2431
2432
2433	/**
2434	* Worker for Fake PCI BIOS config
2435	*
2436	* @returns VBox status code.
2437	*
2438	* @param pDevIns ICH9 device instance.
2439	*/
2440	static int ich9pciFakePCIBIOS(PPDMDEVINS pDevIns)
2441	{
2442	PDEVPCIROOT pPciRoot = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
2443	uint32_t const cbBelow4GB = PDMDevHlpMMPhysGetRamSizeBelow4GB(pDevIns);
2444	uint64_t const cbAbove4GB = PDMDevHlpMMPhysGetRamSizeAbove4GB(pDevIns);
2445
2446	LogRel(("PCI: setting up topology, resources and interrupts\n"));
2447
2448	/** @todo r=klaus this needs to do the same elcr magic as DevPCI.cpp, as the BIOS can't be trusted to do the right thing. Of course it's more difficult than with the old code, as there are bridges to be handled. The interrupt routing needs to be taken into account. Also I highly suspect that the chipset has 8 interrupt lines which we might be able to use for handling things on the root bus better (by treating them as devices on the mainboard). */
2449
2450	/*
2451	* Set the start addresses.
2452	*/
2453	pPciRoot->uPciBiosBus = 0;
2454	pPciRoot->uPciBiosIo = 0xd000;
2455	pPciRoot->uPciBiosMmio = cbBelow4GB;
2456	pPciRoot->uPciBiosMmio64 = cbAbove4GB + _4G;
2457
2458	/* NB: Assume that if PCI controller MMIO range is enabled, it is below the beginning of the memory hole. */
2459	if (pPciRoot->u64PciConfigMMioAddress)
2460	{
2461	AssertRelease(pPciRoot->u64PciConfigMMioAddress >= cbBelow4GB);
2462	pPciRoot->uPciBiosMmio = pPciRoot->u64PciConfigMMioAddress + pPciRoot->u64PciConfigMMioLength;
2463	}
2464	Log(("cbBelow4GB: %#RX32, uPciBiosMmio: %#RX64, cbAbove4GB: %#RX64, uPciBiosMmio64=%#RX64\n",
2465	cbBelow4GB, pPciRoot->uPciBiosMmio, cbAbove4GB, pPciRoot->uPciBiosMmio64));
2466
2467	/*
2468	* Assign bridge topology, for further routing to work.
2469	*/
2470	PDEVPCIBUS pBus = &pPciRoot->PciBus;
2471	AssertLogRel(pBus->iBus == 0);
2472	uint32_t bmUsed = 0;
2473	ich9pciBiosInitBridgeTopology(pDevIns, pPciRoot, pBus, &bmUsed, 0);
2474
2475	/*
2476	* Init all devices on bus 0 (recursing to further buses).
2477	*/
2478	ich9pciBiosInitAllDevicesOnBus(pDevIns, pPciRoot, pBus);
2479
2480	return VINF_SUCCESS;
2481	}
2482
2483
2484	/* -=-=-=-=-=- PCI Config Space -=-=-=-=-=- */
2485
2486
2487	/**
2488	* Reads config space for a device, ignoring interceptors.
2489	*/
2490	DECLHIDDEN(VBOXSTRICTRC) devpciR3CommonConfigReadWorker(PPDMPCIDEV pPciDev, uint32_t uAddress, unsigned cb, uint32_t *pu32Value)
2491	{
2492	uint32_t uValue;
2493	if (uAddress + cb <= RT_MIN(pPciDev->cbConfig, sizeof(pPciDev->abConfig)))
2494	{
2495	switch (cb)
2496	{
2497	case 1:
2498	/* safe, only needs to go to the config space array */
2499	uValue = PDMPciDevGetByte(pPciDev, uAddress);
2500	break;
2501	case 2:
2502	/* safe, only needs to go to the config space array */
2503	uValue = PDMPciDevGetWord(pPciDev, uAddress);
2504	break;
2505	case 4:
2506	/* safe, only needs to go to the config space array */
2507	uValue = PDMPciDevGetDWord(pPciDev, uAddress);
2508	break;
2509	default:
2510	AssertFailed();
2511	uValue = 0;
2512	break;
2513	}
2514
2515	#ifdef LOG_ENABLED
2516	if ( pciDevIsMsiCapable(pPciDev)
2517	&& uAddress - (uint32_t)pPciDev->Int.s.u8MsiCapOffset < (uint32_t)pPciDev->Int.s.u8MsiCapSize )
2518	Log2Func(("MSI CAP: %#x LB %u -> %#x\n", uAddress - (uint32_t)pPciDev->Int.s.u8MsiCapOffset, cb, uValue));
2519	else if ( pciDevIsMsixCapable(pPciDev)
2520	&& uAddress - (uint32_t)pPciDev->Int.s.u8MsixCapOffset < (uint32_t)pPciDev->Int.s.u8MsixCapSize)
2521	Log2Func(("MSI-X CAP: %#x LB %u -> %#x\n", uAddress - (uint32_t)pPciDev->Int.s.u8MsiCapOffset, cb, uValue));
2522	#endif
2523	}
2524	else
2525	{
2526	AssertMsgFailed(("Read after end of PCI config space: %#x LB %u\n", uAddress, cb));
2527	uValue = 0;
2528	}
2529
2530	*pu32Value = uValue;
2531	return VINF_SUCCESS;
2532	}
2533
2534
2535	/**
2536	* @interface_method_impl{PDMPCIBUSREGR3,pfnConfigRead}
2537	*/
2538	DECLCALLBACK(VBOXSTRICTRC) devpciR3CommonConfigRead(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev,
2539	uint32_t uAddress, unsigned cb, uint32_t *pu32Value)
2540	{
2541	RT_NOREF(pDevIns);
2542	return devpciR3CommonConfigReadWorker(pPciDev, uAddress, cb, pu32Value);
2543	}
2544
2545
2546	/**
2547	* Worker for devpciR3ResetDevice and devpciR3UpdateMappings that unmaps a region.
2548	*
2549	* @returns VBox status code.
2550	* @param pDev The PCI device.
2551	* @param iRegion The region to unmap.
2552	*/
2553	static int devpciR3UnmapRegion(PPDMPCIDEV pDev, int iRegion)
2554	{
2555	PPCIIOREGION pRegion = &pDev->Int.s.aIORegions[iRegion];
2556	AssertReturn(pRegion->size != 0, VINF_SUCCESS);
2557
2558	int rc = VINF_SUCCESS;
2559	if (pRegion->addr != INVALID_PCI_ADDRESS)
2560	{
2561	/*
2562	* Do callout first (optional), then do the unmapping via handle if we've been handed one.
2563	*/
2564	if (pRegion->pfnMap)
2565	{
2566	rc = pRegion->pfnMap(pDev->Int.s.pDevInsR3, pDev, iRegion,
2567	NIL_RTGCPHYS, pRegion->size, (PCIADDRESSSPACE)(pRegion->type));
2568	AssertRC(rc);
2569	}
2570
2571	switch (pRegion->fFlags & PDMPCIDEV_IORGN_F_HANDLE_MASK)
2572	{
2573	case PDMPCIDEV_IORGN_F_IOPORT_HANDLE:
2574	rc = PDMDevHlpIoPortUnmap(pDev->Int.s.pDevInsR3, (IOMIOPORTHANDLE)pRegion->hHandle);
2575	AssertRC(rc);
2576	break;
2577
2578	case PDMPCIDEV_IORGN_F_MMIO_HANDLE:
2579	rc = PDMDevHlpMmioUnmap(pDev->Int.s.pDevInsR3, (IOMMMIOHANDLE)pRegion->hHandle);
2580	AssertRC(rc);
2581	break;
2582
2583	case PDMPCIDEV_IORGN_F_MMIO2_HANDLE:
2584	rc = PDMDevHlpMmio2Unmap(pDev->Int.s.pDevInsR3, (PGMMMIO2HANDLE)pRegion->hHandle);
2585	AssertRC(rc);
2586	break;
2587
2588	case PDMPCIDEV_IORGN_F_NO_HANDLE:
2589	Assert(pRegion->fFlags & PDMPCIDEV_IORGN_F_NEW_STYLE);
2590	Assert(pRegion->hHandle == UINT64_MAX);
2591	break;
2592
2593	default:
2594	AssertLogRelFailed();
2595	}
2596	pRegion->addr = INVALID_PCI_ADDRESS;
2597	}
2598	return rc;
2599	}
2600
2601
2602	/**
2603	* Worker for devpciR3CommonDefaultConfigWrite that updates BAR and ROM mappings.
2604	*
2605	* @returns VINF_SUCCESS of DBGFSTOP result.
2606	* @param pPciDev The PCI device to update the mappings for.
2607	* @param fP2PBridge Whether this is a PCI to PCI bridge or not.
2608	*/
2609	static VBOXSTRICTRC devpciR3UpdateMappings(PPDMPCIDEV pPciDev, bool fP2PBridge)
2610	{
2611	/* safe, only needs to go to the config space array */
2612	uint16_t const u16Cmd = PDMPciDevGetWord(pPciDev, VBOX_PCI_COMMAND);
2613	Log4(("devpciR3UpdateMappings: dev %u/%u (%s): u16Cmd=%#x\n",
2614	pPciDev->uDevFn >> VBOX_PCI_DEVFN_DEV_SHIFT, pPciDev->uDevFn & VBOX_PCI_DEVFN_FUN_MASK, pPciDev->pszNameR3, u16Cmd));
2615	for (unsigned iRegion = 0; iRegion < VBOX_PCI_NUM_REGIONS; iRegion++)
2616	{
2617	/* Skip over BAR2..BAR5 for bridges, as they have a different meaning there. */
2618	if (fP2PBridge && iRegion >= 2 && iRegion <= 5)
2619	continue;
2620	PCIIOREGION *pRegion = &pPciDev->Int.s.aIORegions[iRegion];
2621	uint64_t const cbRegion = pRegion->size;
2622	if (cbRegion != 0)
2623	{
2624	uint32_t const offCfgReg = devpciGetRegionReg(iRegion);
2625	bool const f64Bit = (pRegion->type & ((uint8_t)(PCI_ADDRESS_SPACE_BAR64 \| PCI_ADDRESS_SPACE_IO)))
2626	== PCI_ADDRESS_SPACE_BAR64;
2627	uint64_t uNew = INVALID_PCI_ADDRESS;
2628
2629	/*
2630	* Port I/O region. Check if mapped and within 1..65535 range.
2631	*/
2632	if (pRegion->type & PCI_ADDRESS_SPACE_IO)
2633	{
2634	if (u16Cmd & VBOX_PCI_COMMAND_IO)
2635	{
2636	/* safe, only needs to go to the config space array */
2637	uint32_t uIoBase = PDMPciDevGetDWord(pPciDev, offCfgReg);
2638	uIoBase &= ~(uint32_t)(cbRegion - 1);
2639
2640	uint64_t uLast = cbRegion - 1 + uIoBase;
2641	if ( uLast < _64K
2642	&& uIoBase < uLast
2643	&& uIoBase > 0)
2644	uNew = uIoBase;
2645	else
2646	Log4(("devpciR3UpdateMappings: dev %u/%u (%s): region #%u: Disregarding invalid I/O port range: %#RX32..%#RX64\n",
2647	pPciDev->uDevFn >> VBOX_PCI_DEVFN_DEV_SHIFT, pPciDev->uDevFn & VBOX_PCI_DEVFN_FUN_MASK,
2648	pPciDev->pszNameR3, iRegion, uIoBase, uLast));
2649	}
2650	}
2651	/*
2652	* MMIO or ROM. Check ROM enable bit and range.
2653	*
2654	* Note! We exclude the I/O-APIC/HPET/ROM area at the end of the first 4GB to
2655	* prevent the (fake) PCI BIOS and others from making a mess. Pure paranoia.
2656	* Additionally addresses with the top 32 bits all set are excluded, to
2657	* catch silly OSes which probe 64-bit BARs without disabling the
2658	* corresponding transactions.
2659	*
2660	* Update: The pure paranoia above broke NT 3.51, so it was changed to only
2661	* exclude the 64KB BIOS mapping at the top. NT 3.51 excludes the
2662	* top 256KB, btw.
2663	*/
2664	/** @todo Query upper boundrary from CPUM and PGMPhysRom instead of making
2665	* incorrect assumptions. */
2666	else if (u16Cmd & VBOX_PCI_COMMAND_MEMORY)
2667	{
2668	/* safe, only needs to go to the config space array */
2669	uint64_t uMemBase = PDMPciDevGetDWord(pPciDev, offCfgReg);
2670	if (f64Bit)
2671	{
2672	Assert(iRegion < VBOX_PCI_ROM_SLOT);
2673	/* safe, only needs to go to the config space array */
2674	uMemBase \|= (uint64_t)PDMPciDevGetDWord(pPciDev, offCfgReg + 4) << 32;
2675	}
2676	if ( iRegion != PCI_ROM_SLOT
2677	\|\| (uMemBase & RT_BIT_32(0))) /* ROM enable bit. */
2678	{
2679	uMemBase &= ~(cbRegion - 1);
2680
2681	uint64_t uLast = uMemBase + cbRegion - 1;
2682	if ( uMemBase < uLast
2683	&& uMemBase > 0)
2684	{
2685	if ( ( uMemBase > UINT32_C(0xffffffff)
2686	\|\| uLast < UINT32_C(0xffff0000) ) /* UINT32_C(0xfec00000) - breaks NT3.51! */
2687	&& uMemBase < UINT64_C(0xffffffff00000000) )
2688	uNew = uMemBase;
2689	else
2690	Log(("devpciR3UpdateMappings: dev %u/%u (%s): region #%u: Rejecting address range: %#RX64..%#RX64!\n",
2691	pPciDev->uDevFn >> VBOX_PCI_DEVFN_DEV_SHIFT, pPciDev->uDevFn & VBOX_PCI_DEVFN_FUN_MASK,
2692	pPciDev->pszNameR3, iRegion, uMemBase, uLast));
2693	}
2694	else
2695	Log2(("devpciR3UpdateMappings: dev %u/%u (%s): region #%u: Disregarding invalid address range: %#RX64..%#RX64\n",
2696	pPciDev->uDevFn >> VBOX_PCI_DEVFN_DEV_SHIFT, pPciDev->uDevFn & VBOX_PCI_DEVFN_FUN_MASK,
2697	pPciDev->pszNameR3, iRegion, uMemBase, uLast));
2698	}
2699	}
2700
2701	/*
2702	* Do real unmapping and/or mapping if the address change.
2703	*/
2704	Log4(("devpciR3UpdateMappings: dev %u/%u (%s): iRegion=%u addr=%#RX64 uNew=%#RX64\n",
2705	pPciDev->uDevFn >> VBOX_PCI_DEVFN_DEV_SHIFT, pPciDev->uDevFn & VBOX_PCI_DEVFN_FUN_MASK, pPciDev->pszNameR3,
2706	iRegion, pRegion->addr, uNew));
2707	if (uNew != pRegion->addr)
2708	{
2709	LogRel2(("PCI: config dev %u/%u (%s) BAR%i: %#RX64 -> %#RX64 (LB %RX64 (%RU64))\n",
2710	pPciDev->uDevFn >> VBOX_PCI_DEVFN_DEV_SHIFT, pPciDev->uDevFn & VBOX_PCI_DEVFN_FUN_MASK,
2711	pPciDev->pszNameR3, iRegion, pRegion->addr, uNew, cbRegion, cbRegion));
2712
2713	int rc = devpciR3UnmapRegion(pPciDev, iRegion);
2714	AssertLogRelRC(rc);
2715	pRegion->addr = uNew;
2716	if (uNew != INVALID_PCI_ADDRESS)
2717	{
2718	/* The callout is optional (typically not used): */
2719	if (!pRegion->pfnMap)
2720	rc = VINF_SUCCESS;
2721	else
2722	{
2723	rc = pRegion->pfnMap(pPciDev->Int.s.pDevInsR3, pPciDev, iRegion,
2724	uNew, cbRegion, (PCIADDRESSSPACE)(pRegion->type));
2725	AssertLogRelRC(rc);
2726	}
2727
2728	/* We do the mapping for most devices: */
2729	if (pRegion->hHandle != UINT64_MAX && rc != VINF_PCI_MAPPING_DONE)
2730	{
2731	switch (pRegion->fFlags & PDMPCIDEV_IORGN_F_HANDLE_MASK)
2732	{
2733	case PDMPCIDEV_IORGN_F_IOPORT_HANDLE:
2734	rc = PDMDevHlpIoPortMap(pPciDev->Int.s.pDevInsR3, (IOMIOPORTHANDLE)pRegion->hHandle, (RTIOPORT)uNew);
2735	AssertLogRelRC(rc);
2736	break;
2737
2738	case PDMPCIDEV_IORGN_F_MMIO_HANDLE:
2739	rc = PDMDevHlpMmioMap(pPciDev->Int.s.pDevInsR3, (IOMMMIOHANDLE)pRegion->hHandle, uNew);
2740	AssertLogRelRC(rc);
2741	break;
2742
2743	case PDMPCIDEV_IORGN_F_MMIO2_HANDLE:
2744	rc = PDMDevHlpMmio2Map(pPciDev->Int.s.pDevInsR3, (PGMMMIO2HANDLE)pRegion->hHandle, uNew);
2745	AssertRC(rc);
2746	break;
2747
2748	default:
2749	AssertLogRelFailed();
2750	}
2751	}
2752	}
2753	}
2754
2755	if (f64Bit)
2756	iRegion++;
2757	}
2758	/* else: size == 0: unused region */
2759	}
2760
2761	return VINF_SUCCESS;
2762	}
2763
2764
2765	/**
2766	* Worker for devpciR3CommonDefaultConfigWrite that write a byte to a BAR.
2767	*
2768	* @param pPciDev The PCI device.
2769	* @param iRegion The region.
2770	* @param off The BAR offset.
2771	* @param bVal The byte to write.
2772	*/
2773	DECLINLINE(void) devpciR3WriteBarByte(PPDMPCIDEV pPciDev, uint32_t iRegion, uint32_t off, uint8_t bVal)
2774	{
2775	PCIIOREGION *pRegion = &pPciDev->Int.s.aIORegions[iRegion];
2776	Log3Func(("region=%d off=%d val=%#x size=%#llx\n", iRegion, off, bVal, pRegion->size));
2777	Assert(off <= 3);
2778
2779	/* Check if we're writing to upper part of 64-bit BAR. */
2780	if (pRegion->type == 0xff)
2781	{
2782	AssertLogRelReturnVoid(iRegion > 0 && iRegion < VBOX_PCI_ROM_SLOT);
2783	pRegion--;
2784	iRegion--;
2785	off += 4;
2786	Assert(pRegion->type & PCI_ADDRESS_SPACE_BAR64);
2787	}
2788
2789	/* Ignore zero sized regions (they don't exist). */
2790	if (pRegion->size != 0)
2791	{
2792	uint32_t uAddr = devpciGetRegionReg(iRegion) + off;
2793	Assert((pRegion->size & (pRegion->size - 1)) == 0); /* Region size must be power of two. */
2794	uint8_t bMask = ( (pRegion->size - 1) >> (off * 8) ) & 0xff;
2795	if (off == 0)
2796	bMask \|= (pRegion->type & PCI_ADDRESS_SPACE_IO)
2797	? (1 << 2) - 1 /* 2 lowest bits for IO region */ :
2798	(1 << 4) - 1 /* 4 lowest bits for memory region, also ROM enable bit for ROM region */;
2799
2800	/* safe, only needs to go to the config space array */
2801	uint8_t bOld = PDMPciDevGetByte(pPciDev, uAddr) & bMask;
2802	bVal = (bOld & bMask) \| (bVal & ~bMask);
2803
2804	Log3Func(("%x changed to %x\n", bOld, bVal));
2805
2806	/* safe, only needs to go to the config space array */
2807	PDMPciDevSetByte(pPciDev, uAddr, bVal);
2808	}
2809	}
2810
2811
2812	/**
2813	* Checks if the given configuration byte is writable.
2814	*
2815	* @returns true if writable, false if not
2816	* @param uAddress The config space byte byte.
2817	* @param bHeaderType The device header byte.
2818	*/
2819	DECLINLINE(bool) devpciR3IsConfigByteWritable(uint32_t uAddress, uint8_t bHeaderType)
2820	{
2821	switch (bHeaderType)
2822	{
2823	case 0x00: /* normal device */
2824	case 0x80: /* multi-function device */
2825	switch (uAddress)
2826	{
2827	/* Read-only registers. */
2828	case VBOX_PCI_VENDOR_ID:
2829	case VBOX_PCI_VENDOR_ID+1:
2830	case VBOX_PCI_DEVICE_ID:
2831	case VBOX_PCI_DEVICE_ID+1:
2832	case VBOX_PCI_REVISION_ID:
2833	case VBOX_PCI_CLASS_PROG:
2834	case VBOX_PCI_CLASS_SUB:
2835	case VBOX_PCI_CLASS_BASE:
2836	case VBOX_PCI_HEADER_TYPE:
2837	case VBOX_PCI_SUBSYSTEM_VENDOR_ID:
2838	case VBOX_PCI_SUBSYSTEM_VENDOR_ID+1:
2839	case VBOX_PCI_SUBSYSTEM_ID:
2840	case VBOX_PCI_SUBSYSTEM_ID+1:
2841	case VBOX_PCI_ROM_ADDRESS:
2842	case VBOX_PCI_ROM_ADDRESS+1:
2843	case VBOX_PCI_ROM_ADDRESS+2:
2844	case VBOX_PCI_ROM_ADDRESS+3:
2845	case VBOX_PCI_CAPABILITY_LIST:
2846	case VBOX_PCI_INTERRUPT_PIN:
2847	return false;
2848	/* Other registers can be written. */
2849	default:
2850	return true;
2851	}
2852	break;
2853	case 0x01: /* PCI-PCI bridge */
2854	switch (uAddress)
2855	{
2856	/* Read-only registers. */
2857	case VBOX_PCI_VENDOR_ID:
2858	case VBOX_PCI_VENDOR_ID+1:
2859	case VBOX_PCI_DEVICE_ID:
2860	case VBOX_PCI_DEVICE_ID+1:
2861	case VBOX_PCI_REVISION_ID:
2862	case VBOX_PCI_CLASS_PROG:
2863	case VBOX_PCI_CLASS_SUB:
2864	case VBOX_PCI_CLASS_BASE:
2865	case VBOX_PCI_HEADER_TYPE:
2866	case VBOX_PCI_ROM_ADDRESS_BR:
2867	case VBOX_PCI_ROM_ADDRESS_BR+1:
2868	case VBOX_PCI_ROM_ADDRESS_BR+2:
2869	case VBOX_PCI_ROM_ADDRESS_BR+3:
2870	case VBOX_PCI_INTERRUPT_PIN:
2871	return false;
2872	/* Other registers can be written. */
2873	default:
2874	return true;
2875	}
2876	break;
2877	default:
2878	AssertMsgFailed(("Unknown header type %#x\n", bHeaderType));
2879	return false;
2880	}
2881	}
2882
2883
2884	/**
2885	* Writes config space for a device, ignoring interceptors.
2886	*
2887	* See paragraph 7.5 of PCI Express specification (p. 349) for
2888	* definition of registers and their writability policy.
2889	*/
2890	DECLHIDDEN(VBOXSTRICTRC) devpciR3CommonConfigWriteWorker(PPDMDEVINS pDevIns, PDEVPCIBUSCC pBusCC,
2891	PPDMPCIDEV pPciDev, uint32_t uAddress, unsigned cb, uint32_t u32Value)
2892	{
2893	Assert(cb <= 4 && cb != 3);
2894	VBOXSTRICTRC rcStrict = VINF_SUCCESS;
2895
2896	if (uAddress + cb <= RT_MIN(pPciDev->cbConfig, sizeof(pPciDev->abConfig)))
2897	{
2898	/*
2899	* MSI and MSI-X capabilites needs to be handled separately.
2900	*/
2901	if ( pciDevIsMsiCapable(pPciDev)
2902	&& uAddress - (uint32_t)pPciDev->Int.s.u8MsiCapOffset < (uint32_t)pPciDev->Int.s.u8MsiCapSize)
2903	MsiR3PciConfigWrite(pDevIns, pBusCC->CTX_SUFF(pPciHlp), pPciDev, uAddress, u32Value, cb);
2904	else if ( pciDevIsMsixCapable(pPciDev)
2905	&& uAddress - (uint32_t)pPciDev->Int.s.u8MsixCapOffset < (uint32_t)pPciDev->Int.s.u8MsixCapSize)
2906	MsixR3PciConfigWrite(pDevIns, pBusCC->CTX_SUFF(pPciHlp), pPciDev, uAddress, u32Value, cb);
2907	else
2908	{
2909	/*
2910	* Handle the writes byte-by-byte to catch all possible cases.
2911	*
2912	* Note! Real hardware may not necessarily handle non-dword writes like
2913	* we do here and even produce erratic behavior. We don't (yet)
2914	* try emulate that.
2915	*/
2916	uint8_t const bHeaderType = devpciR3GetByte(pPciDev, VBOX_PCI_HEADER_TYPE);
2917	bool const fP2PBridge = bHeaderType == 0x01; /* PCI-PCI bridge */
2918	bool fUpdateMappings = false;
2919	while (cb-- > 0)
2920	{
2921	bool fWritable = devpciR3IsConfigByteWritable(uAddress, bHeaderType);
2922	uint8_t bVal = (uint8_t)u32Value;
2923	bool fRom = false;
2924	switch (uAddress)
2925	{
2926	case VBOX_PCI_COMMAND: /* Command register, bits 0-7. */
2927	if (fWritable)
2928	{
2929	/* safe, only needs to go to the config space array */
2930	PDMPciDevSetByte(pPciDev, uAddress, bVal);
2931	fUpdateMappings = true;
2932	}
2933	break;
2934
2935	case VBOX_PCI_COMMAND+1: /* Command register, bits 8-15. */
2936	if (fWritable)
2937	{
2938	/* don't change reserved bits (11-15) */
2939	bVal &= ~UINT8_C(0xf8);
2940	/* safe, only needs to go to the config space array */
2941	PDMPciDevSetByte(pPciDev, uAddress, bVal);
2942	fUpdateMappings = true;
2943	}
2944	break;
2945
2946	case VBOX_PCI_STATUS: /* Status register, bits 0-7. */
2947	/* don't change read-only bits => actually all lower bits are read-only */
2948	bVal &= ~UINT8_C(0xff);
2949	/* status register, low part: clear bits by writing a '1' to the corresponding bit */
2950	pPciDev->abConfig[uAddress] &= ~bVal;
2951	break;
2952
2953	case VBOX_PCI_STATUS+1: /* Status register, bits 8-15. */
2954	/* don't change read-only bits */
2955	bVal &= ~UINT8_C(0x06);
2956	/* status register, high part: clear bits by writing a '1' to the corresponding bit */
2957	pPciDev->abConfig[uAddress] &= ~bVal;
2958	break;
2959
2960	case VBOX_PCI_ROM_ADDRESS: case VBOX_PCI_ROM_ADDRESS +1: case VBOX_PCI_ROM_ADDRESS +2: case VBOX_PCI_ROM_ADDRESS +3:
2961	fRom = true;
2962	RT_FALL_THRU();
2963	case VBOX_PCI_BASE_ADDRESS_0: case VBOX_PCI_BASE_ADDRESS_0+1: case VBOX_PCI_BASE_ADDRESS_0+2: case VBOX_PCI_BASE_ADDRESS_0+3:
2964	case VBOX_PCI_BASE_ADDRESS_1: case VBOX_PCI_BASE_ADDRESS_1+1: case VBOX_PCI_BASE_ADDRESS_1+2: case VBOX_PCI_BASE_ADDRESS_1+3:
2965	case VBOX_PCI_BASE_ADDRESS_2: case VBOX_PCI_BASE_ADDRESS_2+1: case VBOX_PCI_BASE_ADDRESS_2+2: case VBOX_PCI_BASE_ADDRESS_2+3:
2966	case VBOX_PCI_BASE_ADDRESS_3: case VBOX_PCI_BASE_ADDRESS_3+1: case VBOX_PCI_BASE_ADDRESS_3+2: case VBOX_PCI_BASE_ADDRESS_3+3:
2967	case VBOX_PCI_BASE_ADDRESS_4: case VBOX_PCI_BASE_ADDRESS_4+1: case VBOX_PCI_BASE_ADDRESS_4+2: case VBOX_PCI_BASE_ADDRESS_4+3:
2968	case VBOX_PCI_BASE_ADDRESS_5: case VBOX_PCI_BASE_ADDRESS_5+1: case VBOX_PCI_BASE_ADDRESS_5+2: case VBOX_PCI_BASE_ADDRESS_5+3:
2969	/* We check that, as same PCI register numbers as BARs may mean different registers for bridges */
2970	if (!fP2PBridge)
2971	{
2972	uint32_t iRegion = fRom ? VBOX_PCI_ROM_SLOT : (uAddress - VBOX_PCI_BASE_ADDRESS_0) >> 2;
2973	devpciR3WriteBarByte(pPciDev, iRegion, uAddress & 0x3, bVal);
2974	fUpdateMappings = true;
2975	break;
2976	}
2977	if (uAddress < VBOX_PCI_BASE_ADDRESS_2 \|\| uAddress > VBOX_PCI_BASE_ADDRESS_5+3)
2978	{
2979	/* PCI bridges have only BAR0, BAR1 and ROM */
2980	uint32_t iRegion = fRom ? VBOX_PCI_ROM_SLOT : (uAddress - VBOX_PCI_BASE_ADDRESS_0) >> 2;
2981	devpciR3WriteBarByte(pPciDev, iRegion, uAddress & 0x3, bVal);
2982	fUpdateMappings = true;
2983	break;
2984	}
2985	if ( uAddress == VBOX_PCI_IO_BASE
2986	\|\| uAddress == VBOX_PCI_IO_LIMIT
2987	\|\| uAddress == VBOX_PCI_MEMORY_BASE
2988	\|\| uAddress == VBOX_PCI_MEMORY_LIMIT
2989	\|\| uAddress == VBOX_PCI_PREF_MEMORY_BASE
2990	\|\| uAddress == VBOX_PCI_PREF_MEMORY_LIMIT)
2991	{
2992	/* All bridge address decoders have the low 4 bits
2993	* as readonly, and all but the prefetchable ones
2994	* have the low 4 bits as 0 (the prefetchable have
2995	* it as 1 to show the 64-bit decoder support. */
2996	bVal &= 0xf0;
2997	if ( uAddress == VBOX_PCI_PREF_MEMORY_BASE
2998	\|\| uAddress == VBOX_PCI_PREF_MEMORY_LIMIT)
2999	bVal \|= 0x01;
3000	}
3001	/* (bridge config space which isn't a BAR) */
3002	RT_FALL_THRU();
3003	default:
3004	if (fWritable)
3005	/* safe, only needs to go to the config space array */
3006	PDMPciDevSetByte(pPciDev, uAddress, bVal);
3007	break;
3008	}
3009	uAddress++;
3010	u32Value >>= 8;
3011	}
3012
3013	/*
3014	* Update the region mappings if anything changed related to them (command, BARs, ROM).
3015	*/
3016	if (fUpdateMappings)
3017	rcStrict = devpciR3UpdateMappings(pPciDev, fP2PBridge);
3018	}
3019	}
3020	else
3021	AssertMsgFailed(("Write after end of PCI config space: %#x LB %u\n", uAddress, cb));
3022
3023	return rcStrict;
3024	}
3025
3026
3027	/**
3028	* @interface_method_impl{PDMPCIBUSREGR3,pfnConfigWrite}
3029	*/
3030	DECLCALLBACK(VBOXSTRICTRC) devpciR3CommonConfigWrite(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev,
3031	uint32_t uAddress, unsigned cb, uint32_t u32Value)
3032	{
3033	PDEVPCIBUSCC pBusCC = PDMINS_2_DATA_CC(pDevIns, PDEVPCIBUSCC);
3034	return devpciR3CommonConfigWriteWorker(pDevIns, pBusCC, pPciDev, uAddress, cb, u32Value);
3035	}
3036
3037
3038	/* -=-=-=-=-=- Debug Info Handlers -=-=-=-=-=- */
3039
3040	/**
3041	* Indents an info line.
3042	* @param pHlp The info helper.
3043	* @param iIndentLvl The desired indentation level.
3044	*/
3045	static void devpciR3InfoIndent(PCDBGFINFOHLP pHlp, unsigned iIndentLvl)
3046	{
3047	for (unsigned i = 0; i < iIndentLvl; i++)
3048	pHlp->pfnPrintf(pHlp, " ");
3049	}
3050
3051	static const char *devpciR3InInfoPciBusClassName(uint8_t iBaseClass)
3052	{
3053	static const char *s_szBaseClass[] =
3054	{
3055	/* 00h */ "unknown",
3056	/* 01h */ "mass storage controller",
3057	/* 02h */ "network controller",
3058	/* 03h */ "display controller",
3059	/* 04h */ "multimedia controller",
3060	/* 05h */ "memory controller",
3061	/* 06h */ "bridge device",
3062	/* 07h */ "simple communication controllers",
3063	/* 08h */ "base system peripherals",
3064	/* 09h */ "input devices",
3065	/* 0Ah */ "docking stations",
3066	/* 0Bh */ "processors",
3067	/* 0Ch */ "serial bus controllers",
3068	/* 0Dh */ "wireless controller",
3069	/* 0Eh */ "intelligent I/O controllers",
3070	/* 0Fh */ "satellite communication controllers",
3071	/* 10h */ "encryption/decryption controllers",
3072	/* 11h */ "data acquisition and signal processing controllers"
3073	};
3074	if (iBaseClass < RT_ELEMENTS(s_szBaseClass))
3075	return s_szBaseClass[iBaseClass];
3076	if (iBaseClass < 0xFF)
3077	return "reserved";
3078	return "device does not fit in any defined classes";
3079	}
3080
3081
3082	/**
3083	* Recursive worker for devpciR3InfoPci.
3084	*
3085	* @param pBus The bus to show info for.
3086	* @param pHlp The info helpers.
3087	* @param iIndentLvl The indentation level.
3088	* @param fRegisters Whether to show device registers or not.
3089	*/
3090	static void devpciR3InfoPciBus(PDEVPCIBUS pBus, PCDBGFINFOHLP pHlp, unsigned iIndentLvl, bool fRegisters)
3091	{
3092	/* This has to use the callbacks for accuracy reasons. Otherwise it can get
3093	* confusing in the passthrough case or when the callbacks for some device
3094	* are doing something non-trivial (like implementing an indirect
3095	* passthrough approach), because then the abConfig array is an imprecise
3096	* cache needed for efficiency (so that certain reads can be done from
3097	* R0/RC), but far from authoritative or what the guest would see. */
3098
3099	for (uint32_t uDevFn = 0; uDevFn < RT_ELEMENTS(pBus->apDevices); uDevFn++)
3100	{
3101	PPDMPCIDEV pPciDev = pBus->apDevices[uDevFn];
3102	if (pPciDev != NULL)
3103	{
3104	devpciR3InfoIndent(pHlp, iIndentLvl);
3105
3106	/*
3107	* For passthrough devices MSI/MSI-X mostly reflects the way interrupts delivered to the guest,
3108	* as host driver handles real devices interrupts.
3109	*/
3110	pHlp->pfnPrintf(pHlp, "%02x:%02x.%d %s%s: %04x-%04x %s%s%s",
3111	pBus->iBus, (uDevFn >> 3) & 0xff, uDevFn & 0x7,
3112	pPciDev->pszNameR3,
3113	pciDevIsPassthrough(pPciDev) ? " (PASSTHROUGH)" : "",
3114	devpciR3GetWord(pPciDev, VBOX_PCI_VENDOR_ID), devpciR3GetWord(pPciDev, VBOX_PCI_DEVICE_ID),
3115	pBus->fTypeIch9 ? "ICH9" : pBus->fTypePiix3 ? "PIIX3" : "?type?",
3116	pciDevIsMsiCapable(pPciDev) ? " MSI" : "",
3117	pciDevIsMsixCapable(pPciDev) ? " MSI-X" : ""
3118	);
3119	if (devpciR3GetByte(pPciDev, VBOX_PCI_INTERRUPT_PIN) != 0)
3120	{
3121	pHlp->pfnPrintf(pHlp, " IRQ%d", devpciR3GetByte(pPciDev, VBOX_PCI_INTERRUPT_LINE));
3122	pHlp->pfnPrintf(pHlp, " (INTA#->IRQ%d)", 0x10 + ich9pciSlot2ApicIrq(uDevFn >> 3, 0));
3123	}
3124	pHlp->pfnPrintf(pHlp, "\n");
3125	devpciR3InfoIndent(pHlp, iIndentLvl + 2);
3126	uint8_t uClassBase = devpciR3GetByte(pPciDev, VBOX_PCI_CLASS_BASE);
3127	uint8_t uClassSub = devpciR3GetByte(pPciDev, VBOX_PCI_CLASS_SUB);
3128	pHlp->pfnPrintf(pHlp, "Class base/sub: %02x%02x (%s)\n",
3129	uClassBase, uClassSub, devpciR3InInfoPciBusClassName(uClassBase));
3130
3131	if (pciDevIsMsiCapable(pPciDev) \|\| pciDevIsMsixCapable(pPciDev))
3132	{
3133	devpciR3InfoIndent(pHlp, iIndentLvl + 2);
3134
3135	if (pciDevIsMsiCapable(pPciDev))
3136	pHlp->pfnPrintf(pHlp, "MSI: %s ", MsiIsEnabled(pPciDev) ? "on" : "off");
3137
3138	if (pciDevIsMsixCapable(pPciDev))
3139	pHlp->pfnPrintf(pHlp, "MSI-X: %s ", MsixIsEnabled(pPciDev) ? "on" : "off");
3140
3141	pHlp->pfnPrintf(pHlp, "\n");
3142	}
3143
3144	for (unsigned iRegion = 0; iRegion < VBOX_PCI_NUM_REGIONS; iRegion++)
3145	{
3146	PCIIOREGION const *pRegion = &pPciDev->Int.s.aIORegions[iRegion];
3147	uint64_t const cbRegion = pRegion->size;
3148
3149	if (cbRegion == 0)
3150	continue;
3151
3152	uint32_t uAddr = devpciR3GetDWord(pPciDev, devpciGetRegionReg(iRegion));
3153	const char * pszDesc;
3154	char szDescBuf[128];
3155
3156	bool f64Bit = (pRegion->type & ((uint8_t)(PCI_ADDRESS_SPACE_BAR64 \| PCI_ADDRESS_SPACE_IO)))
3157	== PCI_ADDRESS_SPACE_BAR64;
3158	if (pRegion->type & PCI_ADDRESS_SPACE_IO)
3159	{
3160	pszDesc = "IO";
3161	uAddr &= ~0x3;
3162	}
3163	else
3164	{
3165	RTStrPrintf(szDescBuf, sizeof(szDescBuf), "MMIO%s%s",
3166	f64Bit ? "64" : "32",
3167	pRegion->type & PCI_ADDRESS_SPACE_MEM_PREFETCH ? " PREFETCH" : "");
3168	pszDesc = szDescBuf;
3169	uAddr &= ~0xf;
3170	}
3171
3172	devpciR3InfoIndent(pHlp, iIndentLvl + 2);
3173	pHlp->pfnPrintf(pHlp, "%s region #%u: ", pszDesc, iRegion);
3174	if (f64Bit)
3175	{
3176	uint32_t u32High = devpciR3GetDWord(pPciDev, devpciGetRegionReg(iRegion+1));
3177	uint64_t u64Addr = RT_MAKE_U64(uAddr, u32High);
3178	pHlp->pfnPrintf(pHlp, "%RX64..%RX64\n", u64Addr, u64Addr + cbRegion - 1);
3179	iRegion++;
3180	}
3181	else
3182	pHlp->pfnPrintf(pHlp, "%x..%x\n", uAddr, uAddr + (uint32_t)cbRegion - 1);
3183	}
3184
3185	devpciR3InfoIndent(pHlp, iIndentLvl + 2);
3186	uint16_t iCmd = devpciR3GetWord(pPciDev, VBOX_PCI_COMMAND);
3187	uint16_t iStatus = devpciR3GetWord(pPciDev, VBOX_PCI_STATUS);
3188	pHlp->pfnPrintf(pHlp, "Command: %04x, Status: %04x\n", iCmd, iStatus);
3189	devpciR3InfoIndent(pHlp, iIndentLvl + 2);
3190	pHlp->pfnPrintf(pHlp, "Bus master: %s\n", iCmd & VBOX_PCI_COMMAND_MASTER ? "Yes" : "No");
3191	if (iCmd != PDMPciDevGetCommand(pPciDev))
3192	{
3193	devpciR3InfoIndent(pHlp, iIndentLvl + 2);
3194	pHlp->pfnPrintf(pHlp, "CACHE INCONSISTENCY: Command: %04x\n", PDMPciDevGetCommand(pPciDev));
3195	}
3196
3197	if (fRegisters)
3198	{
3199	devpciR3InfoIndent(pHlp, iIndentLvl + 2);
3200	pHlp->pfnPrintf(pHlp, "PCI registers:\n");
3201	for (unsigned iReg = 0; iReg < 0x100; )
3202	{
3203	unsigned iPerLine = 0x10;
3204	Assert(0x100 % iPerLine == 0);
3205	devpciR3InfoIndent(pHlp, iIndentLvl + 3);
3206
3207	while (iPerLine-- > 0)
3208	pHlp->pfnPrintf(pHlp, "%02x ", devpciR3GetByte(pPciDev, iReg++));
3209	pHlp->pfnPrintf(pHlp, "\n");
3210	}
3211	}
3212	}
3213	}
3214
3215	if (pBus->cBridges > 0)
3216	{
3217	devpciR3InfoIndent(pHlp, iIndentLvl);
3218	pHlp->pfnPrintf(pHlp, "Registered %d bridges, subordinate buses info follows\n", pBus->cBridges);
3219	for (uint32_t iBridge = 0; iBridge < pBus->cBridges; iBridge++)
3220	{
3221	PPDMDEVINS pDevInsSub = pBus->papBridgesR3[iBridge]->Int.s.CTX_SUFF(pDevIns);
3222	PPDMPCIDEV pPciDevSub = pDevInsSub->apPciDevs[0];
3223	PDEVPCIBUS pBusSub = PDMINS_2_DATA(pDevInsSub, PDEVPCIBUS);
3224	uint8_t uPrimary = devpciR3GetByte(pPciDevSub, VBOX_PCI_PRIMARY_BUS);
3225	uint8_t uSecondary = devpciR3GetByte(pPciDevSub, VBOX_PCI_SECONDARY_BUS);
3226	uint8_t uSubordinate = devpciR3GetByte(pPciDevSub, VBOX_PCI_SUBORDINATE_BUS);
3227	devpciR3InfoIndent(pHlp, iIndentLvl);
3228	pHlp->pfnPrintf(pHlp, "%02x:%02x.%d: bridge topology: primary=%d secondary=%d subordinate=%d\n",
3229	uPrimary, pPciDevSub->uDevFn >> 3, pPciDevSub->uDevFn & 7,
3230	uPrimary, uSecondary, uSubordinate);
3231	if ( uPrimary != PDMPciDevGetByte(pPciDevSub, VBOX_PCI_PRIMARY_BUS)
3232	\|\| uSecondary != PDMPciDevGetByte(pPciDevSub, VBOX_PCI_SECONDARY_BUS)
3233	\|\| uSubordinate != PDMPciDevGetByte(pPciDevSub, VBOX_PCI_SUBORDINATE_BUS))
3234	{
3235	devpciR3InfoIndent(pHlp, iIndentLvl);
3236	pHlp->pfnPrintf(pHlp, "CACHE INCONSISTENCY: primary=%d secondary=%d subordinate=%d\n",
3237	PDMPciDevGetByte(pPciDevSub, VBOX_PCI_PRIMARY_BUS),
3238	PDMPciDevGetByte(pPciDevSub, VBOX_PCI_SECONDARY_BUS),
3239	PDMPciDevGetByte(pPciDevSub, VBOX_PCI_SUBORDINATE_BUS));
3240	}
3241	devpciR3InfoIndent(pHlp, iIndentLvl);
3242	pHlp->pfnPrintf(pHlp, "behind bridge: ");
3243	uint8_t uIoBase = devpciR3GetByte(pPciDevSub, VBOX_PCI_IO_BASE);
3244	uint8_t uIoLimit = devpciR3GetByte(pPciDevSub, VBOX_PCI_IO_LIMIT);
3245	pHlp->pfnPrintf(pHlp, "I/O %#06x..%#06x",
3246	(uIoBase & 0xf0) << 8,
3247	(uIoLimit & 0xf0) << 8 \| 0xfff);
3248	if (uIoBase > uIoLimit)
3249	pHlp->pfnPrintf(pHlp, " (IGNORED)");
3250	pHlp->pfnPrintf(pHlp, "\n");
3251	devpciR3InfoIndent(pHlp, iIndentLvl);
3252	pHlp->pfnPrintf(pHlp, "behind bridge: ");
3253	uint32_t uMemoryBase = devpciR3GetWord(pPciDevSub, VBOX_PCI_MEMORY_BASE);
3254	uint32_t uMemoryLimit = devpciR3GetWord(pPciDevSub, VBOX_PCI_MEMORY_LIMIT);
3255	pHlp->pfnPrintf(pHlp, "memory %#010x..%#010x",
3256	(uMemoryBase & 0xfff0) << 16,
3257	(uMemoryLimit & 0xfff0) << 16 \| 0xfffff);
3258	if (uMemoryBase > uMemoryLimit)
3259	pHlp->pfnPrintf(pHlp, " (IGNORED)");
3260	pHlp->pfnPrintf(pHlp, "\n");
3261	devpciR3InfoIndent(pHlp, iIndentLvl);
3262	pHlp->pfnPrintf(pHlp, "behind bridge: ");
3263	uint32_t uPrefMemoryRegBase = devpciR3GetWord(pPciDevSub, VBOX_PCI_PREF_MEMORY_BASE);
3264	uint32_t uPrefMemoryRegLimit = devpciR3GetWord(pPciDevSub, VBOX_PCI_PREF_MEMORY_LIMIT);
3265	uint64_t uPrefMemoryBase = (uPrefMemoryRegBase & 0xfff0) << 16;
3266	uint64_t uPrefMemoryLimit = (uPrefMemoryRegLimit & 0xfff0) << 16 \| 0xfffff;
3267	if ( (uPrefMemoryRegBase & 0xf) == 1
3268	&& (uPrefMemoryRegLimit & 0xf) == 1)
3269	{
3270	uPrefMemoryBase \|= (uint64_t)devpciR3GetDWord(pPciDevSub, VBOX_PCI_PREF_BASE_UPPER32) << 32;
3271	uPrefMemoryLimit \|= (uint64_t)devpciR3GetDWord(pPciDevSub, VBOX_PCI_PREF_LIMIT_UPPER32) << 32;
3272	pHlp->pfnPrintf(pHlp, "64-bit ");
3273	}
3274	else
3275	pHlp->pfnPrintf(pHlp, "32-bit ");
3276	pHlp->pfnPrintf(pHlp, "prefetch memory %#018llx..%#018llx", uPrefMemoryBase, uPrefMemoryLimit);
3277	if (uPrefMemoryBase > uPrefMemoryLimit)
3278	pHlp->pfnPrintf(pHlp, " (IGNORED)");
3279	pHlp->pfnPrintf(pHlp, "\n");
3280	devpciR3InfoPciBus(pBusSub, pHlp, iIndentLvl + 1, fRegisters);
3281	}
3282	}
3283	}
3284
3285
3286	/**
3287	* @callback_method_impl{FNDBGFHANDLERDEV, 'pci'}
3288	*/
3289	DECLCALLBACK(void) devpciR3InfoPci(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs)
3290	{
3291	PDEVPCIBUS pBus = DEVINS_2_DEVPCIBUS(pDevIns);
3292
3293	if (pszArgs == NULL \|\| !*pszArgs \|\| !strcmp(pszArgs, "basic"))
3294	devpciR3InfoPciBus(pBus, pHlp, 0 /iIndentLvl/, false /fRegisters/);
3295	else if (!strcmp(pszArgs, "verbose"))
3296	devpciR3InfoPciBus(pBus, pHlp, 0 /iIndentLvl/, true /fRegisters/);
3297	else
3298	pHlp->pfnPrintf(pHlp, "Invalid argument. Recognized arguments are 'basic', 'verbose'.\n");
3299	}
3300
3301
3302	/**
3303	* @callback_method_impl{FNDBGFHANDLERDEV, 'pciirq'}
3304	*/
3305	DECLCALLBACK(void) devpciR3InfoPciIrq(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs)
3306	{
3307	PDEVPCIROOT pPciRoot = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
3308	NOREF(pszArgs);
3309
3310	pHlp->pfnPrintf(pHlp, "PCI I/O APIC IRQ levels:\n");
3311	for (int i = 0; i < DEVPCI_APIC_IRQ_PINS; ++i)
3312	pHlp->pfnPrintf(pHlp, " IRQ%02d: %u\n", 0x10 + i, pPciRoot->auPciApicIrqLevels[i]);
3313	}
3314
3315
3316	/**
3317	* @interface_method_impl{PDMDEVREG,pfnConstruct}
3318	*/
3319	static DECLCALLBACK(int) ich9pciR3Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
3320	{
3321	RT_NOREF1(iInstance);
3322	Assert(iInstance == 0);
3323	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
3324
3325	PDEVPCIBUSCC pBusCC = PDMINS_2_DATA_CC(pDevIns, PDEVPCIBUSCC);
3326	PDEVPCIROOT pPciRoot = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
3327	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
3328	PDEVPCIBUS pBus = &pPciRoot->PciBus;
3329	Assert(ASMMemIsZero(pPciRoot, sizeof(pPciRoot))); / code used to memset it for some funny reason. just temp insurance. */
3330
3331	/*
3332	* Validate and read configuration.
3333	*/
3334	PDMDEV_VALIDATE_CONFIG_RETURN(pDevIns, "IOAPIC\|McfgBase\|McfgLength", "");
3335
3336	/* query whether we got an IOAPIC */
3337	int rc = pHlp->pfnCFGMQueryBoolDef(pCfg, "IOAPIC", &pPciRoot->fUseIoApic, false /** @todo default to true? */);
3338	AssertRCReturn(rc, PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to query boolean value \"IOAPIC\"")));
3339
3340	if (!pPciRoot->fUseIoApic)
3341	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Must use IO-APIC with ICH9 chipset"));
3342
3343	rc = pHlp->pfnCFGMQueryU64Def(pCfg, "McfgBase", &pPciRoot->u64PciConfigMMioAddress, 0);
3344	AssertRCReturn(rc, PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to read \"McfgBase\"")));
3345
3346	rc = pHlp->pfnCFGMQueryU64Def(pCfg, "McfgLength", &pPciRoot->u64PciConfigMMioLength, 0);
3347	AssertRCReturn(rc, PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to read \"McfgLength\"")));
3348
3349	Log(("PCI: fUseIoApic=%RTbool McfgBase=%#RX64 McfgLength=%#RX64 fR0Enabled=%RTbool fRCEnabled=%RTbool\n", pPciRoot->fUseIoApic,
3350	pPciRoot->u64PciConfigMMioAddress, pPciRoot->u64PciConfigMMioLength, pDevIns->fR0Enabled, pDevIns->fRCEnabled));
3351
3352	/*
3353	* Init data.
3354	*/
3355	/* And fill values */
3356	pBusCC->pDevInsR3 = pDevIns;
3357	pPciRoot->hIoPortAddress = NIL_IOMIOPORTHANDLE;
3358	pPciRoot->hIoPortData = NIL_IOMIOPORTHANDLE;
3359	pPciRoot->hIoPortMagic = NIL_IOMIOPORTHANDLE;
3360	pPciRoot->hMmioMcfg = NIL_IOMMMIOHANDLE;
3361	pPciRoot->PciBus.fTypePiix3 = false;
3362	pPciRoot->PciBus.fTypeIch9 = true;
3363	pPciRoot->PciBus.fPureBridge = false;
3364	pPciRoot->PciBus.papBridgesR3 = (PPDMPCIDEV )PDMDevHlpMMHeapAllocZ(pDevIns, sizeof(PPDMPCIDEV) RT_ELEMENTS(pPciRoot->PciBus.apDevices));
3365	AssertLogRelReturn(pPciRoot->PciBus.papBridgesR3, VERR_NO_MEMORY);
3366
3367	/*
3368	* Disable default device locking.
3369	*/
3370	rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns));
3371	AssertRCReturn(rc, rc);
3372
3373	/*
3374	* Register bus
3375	*/
3376	PDMPCIBUSREGCC PciBusReg;
3377	PciBusReg.u32Version = PDM_PCIBUSREGCC_VERSION;
3378	PciBusReg.pfnRegisterR3 = devpciR3CommonRegisterDevice;
3379	PciBusReg.pfnRegisterMsiR3 = ich9pciRegisterMsi;
3380	PciBusReg.pfnIORegionRegisterR3 = devpciR3CommonIORegionRegister;
3381	PciBusReg.pfnInterceptConfigAccesses = devpciR3CommonInterceptConfigAccesses;
3382	PciBusReg.pfnConfigRead = devpciR3CommonConfigRead;
3383	PciBusReg.pfnConfigWrite = devpciR3CommonConfigWrite;
3384	PciBusReg.pfnSetIrqR3 = ich9pciSetIrq;
3385	PciBusReg.u32EndVersion = PDM_PCIBUSREGCC_VERSION;
3386	rc = PDMDevHlpPCIBusRegister(pDevIns, &PciBusReg, &pBusCC->pPciHlpR3, &pBus->iBus);
3387	if (RT_FAILURE(rc))
3388	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Failed to register ourselves as a PCI Bus"));
3389	Assert(pBus->iBus == 0);
3390	if (pBusCC->pPciHlpR3->u32Version != PDM_PCIHLPR3_VERSION)
3391	return PDMDevHlpVMSetError(pDevIns, VERR_VERSION_MISMATCH, RT_SRC_POS,
3392	N_("PCI helper version mismatch; got %#x expected %#x"),
3393	pBusCC->pPciHlpR3->u32Version, PDM_PCIHLPR3_VERSION);
3394
3395	/*
3396	* Fill in PCI configs and add them to the bus.
3397	*/
3398	/** @todo Disabled for now because this causes error messages with Linux guests.
3399	* The guest loads the x38_edac device which tries to map a memory region
3400	* using an address given at place 0x48 - 0x4f in the PCI config space.
3401	* This fails. because we don't register such a region.
3402	*/
3403	#if 0
3404	/* Host bridge device */
3405	PDMPciDevSetVendorId( &pBus->PciDev, 0x8086); /* Intel */
3406	PDMPciDevSetDeviceId( &pBus->PciDev, 0x29e0); /* Desktop */
3407	PDMPciDevSetRevisionId(&pBus->PciDev, 0x01); /* rev. 01 */
3408	PDMPciDevSetClassBase( &pBus->PciDev, 0x06); /* bridge */
3409	PDMPciDevSetClassSub( &pBus->PciDev, 0x00); /* Host/PCI bridge */
3410	PDMPciDevSetClassProg( &pBus->PciDev, 0x00); /* Host/PCI bridge */
3411	PDMPciDevSetHeaderType(&pBus->PciDev, 0x00); /* bridge */
3412	PDMPciDevSetWord(&pBus->PciDev, VBOX_PCI_SEC_STATUS, 0x0280); /* secondary status */
3413
3414	pBus->PciDev.pDevIns = pDevIns;
3415	/* We register Host<->PCI controller on the bus */
3416	ich9pciRegisterInternal(pBus, 0, &pBus->PciDev, "dram");
3417	#endif
3418
3419	/*
3420	* Register I/O ports.
3421	*/
3422	static const IOMIOPORTDESC s_aAddrDesc[] = { { "PCI address", "PCI address", NULL, NULL }, { NULL, NULL, NULL, NULL } };
3423	rc = PDMDevHlpIoPortCreateAndMap(pDevIns, 0x0cf8, 1, ich9pciIOPortAddressWrite, ich9pciIOPortAddressRead,
3424	"ICH9 (PCI)", s_aAddrDesc, &pPciRoot->hIoPortAddress);
3425	AssertLogRelRCReturn(rc, rc);
3426
3427	static const IOMIOPORTDESC s_aDataDesc[] = { { "PCI data", "PCI data", NULL, NULL }, { NULL, NULL, NULL, NULL } };
3428	rc = PDMDevHlpIoPortCreateAndMap(pDevIns, 0x0cfc, 4, ich9pciIOPortDataWrite, ich9pciIOPortDataRead,
3429	"ICH9 (PCI)", s_aDataDesc, &pPciRoot->hIoPortData);
3430	AssertLogRelRCReturn(rc, rc);
3431
3432	static const IOMIOPORTDESC s_aMagicDesc[] = { { "PCI magic", NULL, NULL, NULL }, { NULL, NULL, NULL, NULL } };
3433	rc = PDMDevHlpIoPortCreateAndMap(pDevIns, 0x0410, 1, ich9pciR3IOPortMagicPCIWrite, ich9pciR3IOPortMagicPCIRead,
3434	"ICH9 (Fake PCI BIOS trigger)", s_aMagicDesc, &pPciRoot->hIoPortMagic);
3435	AssertLogRelRCReturn(rc, rc);
3436
3437	/*
3438	* MMIO handlers.
3439	*/
3440	if (pPciRoot->u64PciConfigMMioAddress != 0)
3441	{
3442	rc = PDMDevHlpMmioCreateAndMap(pDevIns, pPciRoot->u64PciConfigMMioAddress, pPciRoot->u64PciConfigMMioLength,
3443	ich9pciMcfgMMIOWrite, ich9pciMcfgMMIORead,
3444	IOMMMIO_FLAGS_READ_PASSTHRU \| IOMMMIO_FLAGS_WRITE_PASSTHRU,
3445	"MCFG ranges", &pPciRoot->hMmioMcfg);
3446	AssertMsgRCReturn(rc, ("rc=%Rrc %#RX64/%#RX64\n", rc, pPciRoot->u64PciConfigMMioAddress, pPciRoot->u64PciConfigMMioLength), rc);
3447	}
3448
3449	/*
3450	* Saved state and info handlers.
3451	*/
3452	rc = PDMDevHlpSSMRegisterEx(pDevIns, VBOX_ICH9PCI_SAVED_STATE_VERSION,
3453	sizeof(pBus) + 16128, "pgm",
3454	NULL, NULL, NULL,
3455	NULL, ich9pciR3SaveExec, NULL,
3456	NULL, ich9pciR3LoadExec, NULL);
3457	AssertRCReturn(rc, rc);
3458
3459	/** @todo other chipset devices shall be registered too */
3460
3461	PDMDevHlpDBGFInfoRegister(pDevIns, "pci",
3462	"Display PCI bus status. Recognizes 'basic' or 'verbose' as arguments, defaults to 'basic'.",
3463	devpciR3InfoPci);
3464	PDMDevHlpDBGFInfoRegister(pDevIns, "pciirq", "Display PCI IRQ state. (no arguments)", devpciR3InfoPciIrq);
3465
3466	return VINF_SUCCESS;
3467	}
3468
3469
3470	/**
3471	* @interface_method_impl{PDMDEVREG,pfnDestruct}
3472	*/
3473	static DECLCALLBACK(int) ich9pciR3Destruct(PPDMDEVINS pDevIns)
3474	{
3475	PDEVPCIROOT pPciRoot = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
3476	if (pPciRoot->PciBus.papBridgesR3)
3477	{
3478	PDMDevHlpMMHeapFree(pDevIns, pPciRoot->PciBus.papBridgesR3);
3479	pPciRoot->PciBus.papBridgesR3 = NULL;
3480	}
3481	return VINF_SUCCESS;
3482	}
3483
3484
3485	/**
3486	* @param pDevIns The PCI bus device instance.
3487	* @param pDev The PCI device to reset.
3488	*/
3489	void devpciR3ResetDevice(PPDMDEVINS pDevIns, PPDMPCIDEV pDev)
3490	{
3491	/* Clear regions */
3492	for (int iRegion = 0; iRegion < VBOX_PCI_NUM_REGIONS; iRegion++)
3493	{
3494	PCIIOREGION *pRegion = &pDev->Int.s.aIORegions[iRegion];
3495	if (pRegion->size == 0)
3496	continue;
3497	bool const f64Bit = (pRegion->type & ((uint8_t)(PCI_ADDRESS_SPACE_BAR64 \| PCI_ADDRESS_SPACE_IO)))
3498	== PCI_ADDRESS_SPACE_BAR64;
3499
3500	devpciR3UnmapRegion(pDev, iRegion);
3501
3502	if (f64Bit)
3503	iRegion++;
3504	}
3505
3506	if (pciDevIsPassthrough(pDev))
3507	{
3508	// no reset handler - we can do what we need in PDM reset handler
3509	/// @todo is it correct?
3510	}
3511	else
3512	{
3513	devpciR3SetWord(pDevIns, pDev, VBOX_PCI_COMMAND,
3514	devpciR3GetWord(pDev, VBOX_PCI_COMMAND)
3515	& ~(VBOX_PCI_COMMAND_IO \| VBOX_PCI_COMMAND_MEMORY \|
3516	VBOX_PCI_COMMAND_MASTER \| VBOX_PCI_COMMAND_SPECIAL \|
3517	VBOX_PCI_COMMAND_PARITY \| VBOX_PCI_COMMAND_SERR \|
3518	VBOX_PCI_COMMAND_FAST_BACK \| VBOX_PCI_COMMAND_INTX_DISABLE));
3519
3520	/* Bridge device reset handlers processed later */
3521	if (!pciDevIsPci2PciBridge(pDev))
3522	{
3523	devpciR3SetByte(pDevIns, pDev, VBOX_PCI_CACHE_LINE_SIZE, 0x0);
3524	devpciR3SetByte(pDevIns, pDev, VBOX_PCI_INTERRUPT_LINE, 0x0);
3525	}
3526
3527	/* Reset MSI message control. */
3528	if (pciDevIsMsiCapable(pDev))
3529	devpciR3SetWord(pDevIns, pDev, pDev->Int.s.u8MsiCapOffset + VBOX_MSI_CAP_MESSAGE_CONTROL,
3530	devpciR3GetWord(pDev, pDev->Int.s.u8MsiCapOffset + VBOX_MSI_CAP_MESSAGE_CONTROL) & 0xff8e);
3531
3532	/* Reset MSI-X message control. */
3533	if (pciDevIsMsixCapable(pDev))
3534	devpciR3SetWord(pDevIns, pDev, pDev->Int.s.u8MsixCapOffset + VBOX_MSIX_CAP_MESSAGE_CONTROL,
3535	devpciR3GetWord(pDev, pDev->Int.s.u8MsixCapOffset + VBOX_MSIX_CAP_MESSAGE_CONTROL) & 0x3fff);
3536	}
3537	}
3538
3539	/**
3540	* Returns the PCI express encoding for the given PCI Express Device/Port type string.
3541	*
3542	* @returns PCI express encoding.
3543	* @param pszExpressPortType The string identifier for the port/device type.
3544	*/
3545	static uint8_t ich9pcibridgeR3GetExpressPortTypeFromString(const char *pszExpressPortType)
3546	{
3547	if (!RTStrCmp(pszExpressPortType, "EndPtDev"))
3548	return VBOX_PCI_EXP_TYPE_ENDPOINT;
3549	if (!RTStrCmp(pszExpressPortType, "LegEndPtDev"))
3550	return VBOX_PCI_EXP_TYPE_LEG_END;
3551	if (!RTStrCmp(pszExpressPortType, "RootCmplxRootPort"))
3552	return VBOX_PCI_EXP_TYPE_ROOT_PORT;
3553	if (!RTStrCmp(pszExpressPortType, "ExpressSwUpstream"))
3554	return VBOX_PCI_EXP_TYPE_UPSTREAM;
3555	if (!RTStrCmp(pszExpressPortType, "ExpressSwDownstream"))
3556	return VBOX_PCI_EXP_TYPE_DOWNSTREAM;
3557	if (!RTStrCmp(pszExpressPortType, "Express2PciBridge"))
3558	return VBOX_PCI_EXP_TYPE_PCI_BRIDGE;
3559	if (!RTStrCmp(pszExpressPortType, "Pci2ExpressBridge"))
3560	return VBOX_PCI_EXP_TYPE_PCIE_BRIDGE;
3561	if (!RTStrCmp(pszExpressPortType, "RootCmplxIntEp"))
3562	return VBOX_PCI_EXP_TYPE_ROOT_INT_EP;
3563	if (!RTStrCmp(pszExpressPortType, "RootCmplxEc"))
3564	return VBOX_PCI_EXP_TYPE_ROOT_EC;
3565
3566	AssertLogRelMsgFailedReturn(("Unknown express port type specified"), VBOX_PCI_EXP_TYPE_ROOT_INT_EP);
3567	}
3568
3569	/**
3570	* Recursive worker for ich9pciReset.
3571	*
3572	* @param pDevIns ICH9 bridge (root or PCI-to-PCI) instance.
3573	*/
3574	static void ich9pciResetBridge(PPDMDEVINS pDevIns)
3575	{
3576	PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS);
3577
3578	/* PCI-specific reset for each device. */
3579	for (uint32_t uDevFn = 0; uDevFn < RT_ELEMENTS(pBus->apDevices); uDevFn++)
3580	{
3581	if (pBus->apDevices[uDevFn])
3582	devpciR3ResetDevice(pDevIns, pBus->apDevices[uDevFn]);
3583	}
3584
3585	for (uint32_t iBridge = 0; iBridge < pBus->cBridges; iBridge++)
3586	{
3587	if (pBus->papBridgesR3[iBridge])
3588	ich9pciResetBridge(pBus->papBridgesR3[iBridge]->Int.s.CTX_SUFF(pDevIns));
3589	}
3590
3591	/* Reset topology config for non-root bridge. Last thing to do, otherwise
3592	* the secondary and subordinate are instantly unreachable. */
3593	if (pBus->iBus != 0)
3594	{
3595	PPDMPCIDEV pPciDev = pDevIns->apPciDevs[0];
3596
3597	devpciR3SetByte(pDevIns, pPciDev, VBOX_PCI_PRIMARY_BUS, 0);
3598	devpciR3SetByte(pDevIns, pPciDev, VBOX_PCI_SECONDARY_BUS, 0);
3599	devpciR3SetByte(pDevIns, pPciDev, VBOX_PCI_SUBORDINATE_BUS, 0);
3600	/* Not resetting the address decoders of the bridge to 0, since the
3601	* PCI-to-PCI Bridge spec says that there is no default value. */
3602	}
3603	}
3604
3605
3606	/**
3607	* @interface_method_impl{PDMDEVREG,pfnReset}
3608	*/
3609	static DECLCALLBACK(void) ich9pciReset(PPDMDEVINS pDevIns)
3610	{
3611	/* Reset everything under the root bridge. */
3612	ich9pciResetBridge(pDevIns);
3613	}
3614
3615
3616	/**
3617	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
3618	*/
3619	static DECLCALLBACK(void ) ich9pcibridgeQueryInterface(PPDMIBASE pInterface, const char pszIID)
3620	{
3621	PPDMDEVINS pDevIns = RT_FROM_MEMBER(pInterface, PDMDEVINS, IBase);
3622	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDevIns->IBase);
3623
3624	/* HACK ALERT! Special access to the PDMPCIDEV structure of an ich9pcibridge
3625	instance (see PDMIICH9BRIDGEPDMPCIDEV_IID for details). */
3626	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIICH9BRIDGEPDMPCIDEV, pDevIns->apPciDevs[0]);
3627	return NULL;
3628	}
3629
3630
3631	/**
3632	* @interface_method_impl{PDMDEVREG,pfnDestruct}
3633	*/
3634	static DECLCALLBACK(int) ich9pcibridgeR3Destruct(PPDMDEVINS pDevIns)
3635	{
3636	PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS);
3637	if (pBus->papBridgesR3)
3638	{
3639	PDMDevHlpMMHeapFree(pDevIns, pBus->papBridgesR3);
3640	pBus->papBridgesR3 = NULL;
3641	}
3642	return VINF_SUCCESS;
3643	}
3644
3645
3646	/**
3647	* @interface_method_impl{PDMDEVREG,pfnConstruct}
3648	*/
3649	static DECLCALLBACK(int) ich9pcibridgeR3Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
3650	{
3651	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
3652	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
3653
3654	/*
3655	* Validate and read configuration.
3656	*/
3657	PDMDEV_VALIDATE_CONFIG_RETURN(pDevIns, "ExpressEnabled\|ExpressPortType", "");
3658
3659	/* check if we're supposed to implement a PCIe bridge. */
3660	bool fExpress;
3661	int rc = pHlp->pfnCFGMQueryBoolDef(pCfg, "ExpressEnabled", &fExpress, false);
3662	AssertRCReturn(rc, PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to query boolean value \"ExpressEnabled\"")));
3663
3664	char szExpressPortType[80];
3665	rc = pHlp->pfnCFGMQueryStringDef(pCfg, "ExpressPortType", szExpressPortType, sizeof(szExpressPortType), "RootCmplxIntEp");
3666	AssertRCReturn(rc, PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: failed to read \"ExpressPortType\" as string")));
3667
3668	uint8_t const uExpressPortType = ich9pcibridgeR3GetExpressPortTypeFromString(szExpressPortType);
3669	Log(("PCI/bridge#%u: fR0Enabled=%RTbool fRCEnabled=%RTbool fExpress=%RTbool uExpressPortType=%u (%s)\n",
3670	iInstance, pDevIns->fR0Enabled, pDevIns->fRCEnabled, fExpress, uExpressPortType, szExpressPortType));
3671
3672	/*
3673	* Init data and register the PCI bus.
3674	*/
3675	pDevIns->IBase.pfnQueryInterface = ich9pcibridgeQueryInterface;
3676
3677	PDEVPCIBUSCC pBusCC = PDMINS_2_DATA_CC(pDevIns, PDEVPCIBUSCC);
3678	PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS);
3679
3680	pBus->fTypePiix3 = false;
3681	pBus->fTypeIch9 = true;
3682	pBus->fPureBridge = true;
3683	pBusCC->pDevInsR3 = pDevIns;
3684	pBus->papBridgesR3 = (PPDMPCIDEV )PDMDevHlpMMHeapAllocZ(pDevIns, sizeof(PPDMPCIDEV) RT_ELEMENTS(pBus->apDevices));
3685	AssertLogRelReturn(pBus->papBridgesR3, VERR_NO_MEMORY);
3686
3687	PDMPCIBUSREGCC PciBusReg;
3688	PciBusReg.u32Version = PDM_PCIBUSREGCC_VERSION;
3689	PciBusReg.pfnRegisterR3 = devpcibridgeR3CommonRegisterDevice;
3690	PciBusReg.pfnRegisterMsiR3 = ich9pciRegisterMsi;
3691	PciBusReg.pfnIORegionRegisterR3 = devpciR3CommonIORegionRegister;
3692	PciBusReg.pfnInterceptConfigAccesses = devpciR3CommonInterceptConfigAccesses;
3693	PciBusReg.pfnConfigWrite = devpciR3CommonConfigWrite;
3694	PciBusReg.pfnConfigRead = devpciR3CommonConfigRead;
3695	PciBusReg.pfnSetIrqR3 = ich9pcibridgeSetIrq;
3696	PciBusReg.u32EndVersion = PDM_PCIBUSREGCC_VERSION;
3697	rc = PDMDevHlpPCIBusRegister(pDevIns, &PciBusReg, &pBusCC->pPciHlpR3, &pBus->iBus);
3698	if (RT_FAILURE(rc))
3699	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Failed to register ourselves as a PCI Bus"));
3700	Assert(pBus->iBus == (uint32_t)iInstance + 1); /* Can be removed when adding support for multiple bridge implementations. */
3701	if (pBusCC->pPciHlpR3->u32Version != PDM_PCIHLPR3_VERSION)
3702	return PDMDevHlpVMSetError(pDevIns, VERR_VERSION_MISMATCH, RT_SRC_POS,
3703	N_("PCI helper version mismatch; got %#x expected %#x"),
3704	pBusCC->pPciHlpR3->u32Version, PDM_PCIHLPR3_VERSION);
3705
3706	LogRel(("PCI: Registered bridge instance #%u as PDM bus no %u.\n", iInstance, pBus->iBus));
3707
3708
3709	/* Disable default device locking. */
3710	rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns));
3711	AssertRCReturn(rc, rc);
3712
3713	/*
3714	* Fill in PCI configs and add them to the bus.
3715	*/
3716	PPDMPCIDEV pPciDev = pDevIns->apPciDevs[0];
3717	PDMPCIDEV_ASSERT_VALID(pDevIns, pPciDev);
3718
3719	PDMPciDevSetVendorId( pPciDev, 0x8086); /* Intel */
3720	if (fExpress)
3721	{
3722	PDMPciDevSetDeviceId(pPciDev, 0x29e1); /* 82X38/X48 Express Host-Primary PCI Express Bridge. */
3723	PDMPciDevSetRevisionId(pPciDev, 0x01);
3724	}
3725	else
3726	{
3727	PDMPciDevSetDeviceId(pPciDev, 0x2448); /* 82801 Mobile PCI bridge. */
3728	PDMPciDevSetRevisionId(pPciDev, 0xf2);
3729	}
3730	PDMPciDevSetClassSub( pPciDev, 0x04); /* pci2pci */
3731	PDMPciDevSetClassBase( pPciDev, 0x06); /* PCI_bridge */
3732	if (fExpress)
3733	PDMPciDevSetClassProg(pPciDev, 0x00); /* Normal decoding. */
3734	else
3735	PDMPciDevSetClassProg(pPciDev, 0x01); /* Supports subtractive decoding. */
3736	PDMPciDevSetHeaderType(pPciDev, 0x01); /* Single function device which adheres to the PCI-to-PCI bridge spec. */
3737	if (fExpress)
3738	{
3739	PDMPciDevSetCommand(pPciDev, VBOX_PCI_COMMAND_SERR);
3740	PDMPciDevSetStatus(pPciDev, VBOX_PCI_STATUS_CAP_LIST); /* Has capabilities. */
3741	PDMPciDevSetByte(pPciDev, VBOX_PCI_CACHE_LINE_SIZE, 8); /* 32 bytes */
3742	/* PCI Express */
3743	PDMPciDevSetByte(pPciDev, 0xa0 + 0, VBOX_PCI_CAP_ID_EXP); /* PCI_Express */
3744	PDMPciDevSetByte(pPciDev, 0xa0 + 1, 0); /* next */
3745	PDMPciDevSetWord(pPciDev, 0xa0 + 2,
3746	/* version */ 0x2
3747	\| (uExpressPortType << 4));
3748	PDMPciDevSetDWord(pPciDev, 0xa0 + 4, VBOX_PCI_EXP_DEVCAP_RBE); /* Device capabilities. */
3749	PDMPciDevSetWord(pPciDev, 0xa0 + 8, 0x0000); /* Device control. */
3750	PDMPciDevSetWord(pPciDev, 0xa0 + 10, 0x0000); /* Device status. */
3751	PDMPciDevSetDWord(pPciDev, 0xa0 + 12,
3752	/* Max Link Speed */ 2
3753	\| /* Maximum Link Width */ (16 << 4)
3754	\| /* Active State Power Management (ASPM) Sopport */ (0 << 10)
3755	\| VBOX_PCI_EXP_LNKCAP_LBNC
3756	\| /* Port Number / ((2 + iInstance) << 24)); / Link capabilities. */
3757	PDMPciDevSetWord(pPciDev, 0xa0 + 16, VBOX_PCI_EXP_LNKCTL_CLOCK); /* Link control. */
3758	PDMPciDevSetWord(pPciDev, 0xa0 + 18,
3759	/* Current Link Speed */ 2
3760	\| /* Negotiated Link Width */ (16 << 4)
3761	\| VBOX_PCI_EXP_LNKSTA_SL_CLK); /* Link status. */
3762	PDMPciDevSetDWord(pPciDev, 0xa0 + 20,
3763	/* Slot Power Limit Value */ (75 << 7)
3764	\| /* Physical Slot Number / (0 << 19)); / Slot capabilities. */
3765	PDMPciDevSetWord(pPciDev, 0xa0 + 24, 0x0000); /* Slot control. */
3766	PDMPciDevSetWord(pPciDev, 0xa0 + 26, 0x0000); /* Slot status. */
3767	PDMPciDevSetWord(pPciDev, 0xa0 + 28, 0x0000); /* Root control. */
3768	PDMPciDevSetWord(pPciDev, 0xa0 + 30, 0x0000); /* Root capabilities. */
3769	PDMPciDevSetDWord(pPciDev, 0xa0 + 32, 0x00000000); /* Root status. */
3770	PDMPciDevSetDWord(pPciDev, 0xa0 + 36, 0x00000000); /* Device capabilities 2. */
3771	PDMPciDevSetWord(pPciDev, 0xa0 + 40, 0x0000); /* Device control 2. */
3772	PDMPciDevSetWord(pPciDev, 0xa0 + 42, 0x0000); /* Device status 2. */
3773	PDMPciDevSetDWord(pPciDev, 0xa0 + 44,
3774	/* Supported Link Speeds Vector / (2 << 1)); / Link capabilities 2. */
3775	PDMPciDevSetWord(pPciDev, 0xa0 + 48,
3776	/* Target Link Speed / 2); / Link control 2. */
3777	PDMPciDevSetWord(pPciDev, 0xa0 + 50, 0x0000); /* Link status 2. */
3778	PDMPciDevSetDWord(pPciDev, 0xa0 + 52, 0x00000000); /* Slot capabilities 2. */
3779	PDMPciDevSetWord(pPciDev, 0xa0 + 56, 0x0000); /* Slot control 2. */
3780	PDMPciDevSetWord(pPciDev, 0xa0 + 58, 0x0000); /* Slot status 2. */
3781	PDMPciDevSetCapabilityList(pPciDev, 0xa0);
3782	}
3783	else
3784	{
3785	PDMPciDevSetCommand(pPciDev, 0x00);
3786	PDMPciDevSetStatus(pPciDev, 0x20); /* 66MHz Capable. */
3787	}
3788	PDMPciDevSetInterruptLine(pPciDev, 0x00); /* This device does not assert interrupts. */
3789
3790	/*
3791	* This device does not generate interrupts. Interrupt delivery from
3792	* devices attached to the bus is unaffected.
3793	*/
3794	PDMPciDevSetInterruptPin (pPciDev, 0x00);
3795
3796	if (fExpress)
3797	{
3798	/** @todo r=klaus set up the PCIe config space beyond the old 256 byte
3799	* limit, containing additional capability descriptors. */
3800	}
3801
3802	/*
3803	* Register this PCI bridge. The called function will take care on which bus we will get registered.
3804	*/
3805	rc = PDMDevHlpPCIRegisterEx(pDevIns, pPciDev, PDMPCIDEVREG_F_PCI_BRIDGE, PDMPCIDEVREG_DEV_NO_FIRST_UNUSED,
3806	PDMPCIDEVREG_FUN_NO_FIRST_UNUSED, "ich9pcibridge");
3807	AssertLogRelRCReturn(rc, rc);
3808
3809	pPciDev->Int.s.pfnBridgeConfigRead = ich9pcibridgeConfigRead;
3810	pPciDev->Int.s.pfnBridgeConfigWrite = ich9pcibridgeConfigWrite;
3811
3812	/*
3813	* Register SSM handlers. We use the same saved state version as for the host bridge
3814	* to make changes easier.
3815	*/
3816	rc = PDMDevHlpSSMRegisterEx(pDevIns, VBOX_ICH9PCI_SAVED_STATE_VERSION,
3817	sizeof(pBus) + 16128,
3818	"pgm" /* before */,
3819	NULL, NULL, NULL,
3820	NULL, ich9pcibridgeR3SaveExec, NULL,
3821	NULL, ich9pcibridgeR3LoadExec, NULL);
3822	AssertLogRelRCReturn(rc, rc);
3823
3824	return VINF_SUCCESS;
3825	}
3826
3827	#else /* !IN_RING3 */
3828
3829	/**
3830	* @interface_method_impl{PDMDEVREGR0,pfnConstruct}
3831	*/
3832	DECLCALLBACK(int) ich9pciRZConstruct(PPDMDEVINS pDevIns)
3833	{
3834	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
3835	PDEVPCIROOT pPciRoot = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
3836	PDEVPCIBUSCC pBusCC = PDMINS_2_DATA_CC(pDevIns, PDEVPCIBUSCC);
3837
3838	/* Mirror the ring-3 device lock disabling: */
3839	int rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns));
3840	AssertRCReturn(rc, rc);
3841
3842	/* Set up the RZ PCI bus callbacks: */
3843	PDMPCIBUSREGCC PciBusReg;
3844	PciBusReg.u32Version = PDM_PCIBUSREGCC_VERSION;
3845	PciBusReg.iBus = pPciRoot->PciBus.iBus;
3846	PciBusReg.pfnSetIrq = ich9pciSetIrq;
3847	PciBusReg.u32EndVersion = PDM_PCIBUSREGCC_VERSION;
3848	rc = PDMDevHlpPCIBusSetUpContext(pDevIns, &PciBusReg, &pBusCC->CTX_SUFF(pPciHlp));
3849	AssertRCReturn(rc, rc);
3850
3851	/* Set up I/O port callbacks, except for the magic port: */
3852	rc = PDMDevHlpIoPortSetUpContext(pDevIns, pPciRoot->hIoPortAddress, ich9pciIOPortAddressWrite, ich9pciIOPortAddressRead, NULL);
3853	AssertLogRelRCReturn(rc, rc);
3854
3855	rc = PDMDevHlpIoPortSetUpContext(pDevIns, pPciRoot->hIoPortData, ich9pciIOPortDataWrite, ich9pciIOPortDataRead, NULL);
3856	AssertLogRelRCReturn(rc, rc);
3857
3858	/* Set up MMIO callbacks: */
3859	if (pPciRoot->hMmioMcfg != NIL_IOMMMIOHANDLE)
3860	{
3861	rc = PDMDevHlpMmioSetUpContext(pDevIns, pPciRoot->hMmioMcfg, ich9pciMcfgMMIOWrite, ich9pciMcfgMMIORead, NULL /pvUser/);
3862	AssertLogRelRCReturn(rc, rc);
3863	}
3864
3865	return rc;
3866	}
3867
3868
3869	/**
3870	* @interface_method_impl{PDMDEVREGR0,pfnConstruct}
3871	*/
3872	DECLCALLBACK(int) ich9pcibridgeRZConstruct(PPDMDEVINS pDevIns)
3873	{
3874	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
3875	PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS);
3876	PDEVPCIBUSCC pBusCC = PDMINS_2_DATA_CC(pDevIns, PDEVPCIBUSCC);
3877
3878	/* Mirror the ring-3 device lock disabling: */
3879	int rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns));
3880	AssertRCReturn(rc, rc);
3881
3882	/* Set up the RZ PCI bus callbacks: */
3883	PDMPCIBUSREGCC PciBusReg;
3884	PciBusReg.u32Version = PDM_PCIBUSREGCC_VERSION;
3885	PciBusReg.iBus = pBus->iBus;
3886	PciBusReg.pfnSetIrq = ich9pcibridgeSetIrq;
3887	PciBusReg.u32EndVersion = PDM_PCIBUSREGCC_VERSION;
3888	rc = PDMDevHlpPCIBusSetUpContext(pDevIns, &PciBusReg, &pBusCC->CTX_SUFF(pPciHlp));
3889	AssertRCReturn(rc, rc);
3890
3891	return rc;
3892	}
3893
3894	#endif /* !IN_RING3 */
3895
3896	/**
3897	* The PCI bus device registration structure.
3898	*/
3899	const PDMDEVREG g_DevicePciIch9 =
3900	{
3901	/* .u32Version = */ PDM_DEVREG_VERSION,
3902	/* .uReserved0 = */ 0,
3903	/* .szName = */ "ich9pci",
3904	/* .fFlags = */ PDM_DEVREG_FLAGS_DEFAULT_BITS \| PDM_DEVREG_FLAGS_RZ \| PDM_DEVREG_FLAGS_NEW_STYLE,
3905	/* .fClass = */ PDM_DEVREG_CLASS_BUS_PCI,
3906	/* .cMaxInstances = */ 1,
3907	/* .uSharedVersion = */ 42,
3908	/* .cbInstanceShared = */ sizeof(DEVPCIROOT),
3909	/* .cbInstanceCC = */ sizeof(CTX_SUFF(DEVPCIBUS)),
3910	/* .cbInstanceRC = */ sizeof(DEVPCIBUSRC),
3911	/* .cMaxPciDevices = */ 1,
3912	/* .cMaxMsixVectors = */ 0,
3913	/* .pszDescription = */ "ICH9 PCI bridge",
3914	#if defined(IN_RING3)
3915	/* .pszRCMod = */ "VBoxDDRC.rc",
3916	/* .pszR0Mod = */ "VBoxDDR0.r0",
3917	/* .pfnConstruct = */ ich9pciR3Construct,
3918	/* .pfnDestruct = */ ich9pciR3Destruct,
3919	/* .pfnRelocate = */ NULL,
3920	/* .pfnMemSetup = */ NULL,
3921	/* .pfnPowerOn = */ NULL,
3922	/* .pfnReset = */ ich9pciReset,
3923	/* .pfnSuspend = */ NULL,
3924	/* .pfnResume = */ NULL,
3925	/* .pfnAttach = */ NULL,
3926	/* .pfnDetach = */ NULL,
3927	/* .pfnQueryInterface = */ NULL,
3928	/* .pfnInitComplete = */ NULL,
3929	/* .pfnPowerOff = */ NULL,
3930	/* .pfnSoftReset = */ NULL,
3931	/* .pfnReserved0 = */ NULL,
3932	/* .pfnReserved1 = */ NULL,
3933	/* .pfnReserved2 = */ NULL,
3934	/* .pfnReserved3 = */ NULL,
3935	/* .pfnReserved4 = */ NULL,
3936	/* .pfnReserved5 = */ NULL,
3937	/* .pfnReserved6 = */ NULL,
3938	/* .pfnReserved7 = */ NULL,
3939	#elif defined(IN_RING0)
3940	/* .pfnEarlyConstruct = */ NULL,
3941	/* .pfnConstruct = */ ich9pciRZConstruct,
3942	/* .pfnDestruct = */ NULL,
3943	/* .pfnFinalDestruct = */ NULL,
3944	/* .pfnRequest = */ NULL,
3945	/* .pfnReserved0 = */ NULL,
3946	/* .pfnReserved1 = */ NULL,
3947	/* .pfnReserved2 = */ NULL,
3948	/* .pfnReserved3 = */ NULL,
3949	/* .pfnReserved4 = */ NULL,
3950	/* .pfnReserved5 = */ NULL,
3951	/* .pfnReserved6 = */ NULL,
3952	/* .pfnReserved7 = */ NULL,
3953	#elif defined(IN_RC)
3954	/* .pfnConstruct = */ ich9pciRZConstruct,
3955	/* .pfnReserved0 = */ NULL,
3956	/* .pfnReserved1 = */ NULL,
3957	/* .pfnReserved2 = */ NULL,
3958	/* .pfnReserved3 = */ NULL,
3959	/* .pfnReserved4 = */ NULL,
3960	/* .pfnReserved5 = */ NULL,
3961	/* .pfnReserved6 = */ NULL,
3962	/* .pfnReserved7 = */ NULL,
3963	#else
3964	# error "Not in IN_RING3, IN_RING0 or IN_RC!"
3965	#endif
3966	/* .u32VersionEnd = */ PDM_DEVREG_VERSION
3967	};
3968
3969	/**
3970	* The device registration structure
3971	* for the PCI-to-PCI bridge.
3972	*/
3973	const PDMDEVREG g_DevicePciIch9Bridge =
3974	{
3975	/* .u32Version = */ PDM_DEVREG_VERSION,
3976	/* .uReserved0 = */ 0,
3977	/* .szName = */ "ich9pcibridge",
3978	/* .fFlags = */ PDM_DEVREG_FLAGS_DEFAULT_BITS \| PDM_DEVREG_FLAGS_RZ \| PDM_DEVREG_FLAGS_NEW_STYLE,
3979	/* .fClass = */ PDM_DEVREG_CLASS_BUS_PCI,
3980	/* .cMaxInstances = */ ~0U,
3981	/* .uSharedVersion = */ 42,
3982	/* .cbInstanceShared = */ sizeof(DEVPCIBUS),
3983	/* .cbInstanceCC = */ sizeof(CTX_SUFF(DEVPCIBUS)),
3984	/* .cbInstanceRC = */ 0,
3985	/* .cMaxPciDevices = */ 1,
3986	/* .cMaxMsixVectors = */ 0,
3987	/* .pszDescription = */ "ICH9 PCI to PCI bridge",
3988	#if defined(IN_RING3)
3989	/* .pszRCMod = */ "VBoxDDRC.rc",
3990	/* .pszR0Mod = */ "VBoxDDR0.r0",
3991	/* .pfnConstruct = */ ich9pcibridgeR3Construct,
3992	/* .pfnDestruct = */ ich9pcibridgeR3Destruct,
3993	/* .pfnRelocate = */ NULL,
3994	/* .pfnMemSetup = */ NULL,
3995	/* .pfnPowerOn = */ NULL,
3996	/* .pfnReset = / NULL, / Must be NULL, to make sure only bus driver handles reset */
3997	/* .pfnSuspend = */ NULL,
3998	/* .pfnResume = */ NULL,
3999	/* .pfnAttach = */ NULL,
4000	/* .pfnDetach = */ NULL,
4001	/* .pfnQueryInterface = */ NULL,
4002	/* .pfnInitComplete = */ NULL,
4003	/* .pfnPowerOff = */ NULL,
4004	/* .pfnSoftReset = */ NULL,
4005	/* .pfnReserved0 = */ NULL,
4006	/* .pfnReserved1 = */ NULL,
4007	/* .pfnReserved2 = */ NULL,
4008	/* .pfnReserved3 = */ NULL,
4009	/* .pfnReserved4 = */ NULL,
4010	/* .pfnReserved5 = */ NULL,
4011	/* .pfnReserved6 = */ NULL,
4012	/* .pfnReserved7 = */ NULL,
4013	#elif defined(IN_RING0)
4014	/* .pfnEarlyConstruct = */ NULL,
4015	/* .pfnConstruct = */ ich9pcibridgeRZConstruct,
4016	/* .pfnDestruct = */ NULL,
4017	/* .pfnFinalDestruct = */ NULL,
4018	/* .pfnRequest = */ NULL,
4019	/* .pfnReserved0 = */ NULL,
4020	/* .pfnReserved1 = */ NULL,
4021	/* .pfnReserved2 = */ NULL,
4022	/* .pfnReserved3 = */ NULL,
4023	/* .pfnReserved4 = */ NULL,
4024	/* .pfnReserved5 = */ NULL,
4025	/* .pfnReserved6 = */ NULL,
4026	/* .pfnReserved7 = */ NULL,
4027	#elif defined(IN_RC)
4028	/* .pfnConstruct = */ ich9pcibridgeRZConstruct,
4029	/* .pfnReserved0 = */ NULL,
4030	/* .pfnReserved1 = */ NULL,
4031	/* .pfnReserved2 = */ NULL,
4032	/* .pfnReserved3 = */ NULL,
4033	/* .pfnReserved4 = */ NULL,
4034	/* .pfnReserved5 = */ NULL,
4035	/* .pfnReserved6 = */ NULL,
4036	/* .pfnReserved7 = */ NULL,
4037	#else
4038	# error "Not in IN_RING3, IN_RING0 or IN_RC!"
4039	#endif
4040	/* .u32VersionEnd = */ PDM_DEVREG_VERSION
4041	};
4042

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source: vbox/trunk/src/VBox/Devices/Bus/DevPciIch9.cpp@ 99404

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