DevPciIch9.cpp@ 34014

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1	/* $Id: DevPciIch9.cpp 34014 2010-11-11 21:34:56Z vboxsync $ */
2	/** @file
3	* DevPCI - ICH9 southbridge PCI bus emulation Device.
4	*/
5
6	/*
7	* Copyright (C) 2010 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18	/*******************************************************************************
19	* Header Files *
20	*******************************************************************************/
21	#define LOG_GROUP LOG_GROUP_DEV_PCI
22	/* Hack to get PCIDEVICEINT declare at the right point - include "PCIInternal.h". */
23	#define PCI_INCLUDE_PRIVATE
24	#include <VBox/pci.h>
25	#include <VBox/msi.h>
26	#include <VBox/pdmdev.h>
27	#include <iprt/asm.h>
28	#include <iprt/assert.h>
29	#include <iprt/string.h>
30	#ifdef IN_RING3
31	#include <iprt/alloc.h>
32	#endif
33
34	#include "../Builtins.h"
35
36	#include "MsiCommon.h"
37
38	/**
39	* PCI Bus instance.
40	*/
41	typedef struct PCIBus
42	{
43	/** Bus number. */
44	int32_t iBus;
45	/** Number of bridges attached to the bus. */
46	uint32_t cBridges;
47
48	/** Array of PCI devices. We assume 32 slots, each with 8 functions. */
49	R3PTRTYPE(PPCIDEVICE) apDevices[256];
50	/** Array of bridges attached to the bus. */
51	R3PTRTYPE(PPCIDEVICE *) papBridgesR3;
52
53	/** R3 pointer to the device instance. */
54	PPDMDEVINSR3 pDevInsR3;
55	/** Pointer to the PCI R3 helpers. */
56	PCPDMPCIHLPR3 pPciHlpR3;
57
58	/** R0 pointer to the device instance. */
59	PPDMDEVINSR0 pDevInsR0;
60	/** Pointer to the PCI R0 helpers. */
61	PCPDMPCIHLPR0 pPciHlpR0;
62
63	/** RC pointer to the device instance. */
64	PPDMDEVINSRC pDevInsRC;
65	/** Pointer to the PCI RC helpers. */
66	PCPDMPCIHLPRC pPciHlpRC;
67
68	/** The PCI device for the PCI bridge. */
69	PCIDEVICE aPciDev;
70
71	} PCIBUS, *PPCIBUS;
72
73
74	/** @def PCI_APIC_IRQ_PINS
75	* Number of pins for interrupts if the APIC is used.
76	*/
77	#define PCI_APIC_IRQ_PINS 8
78
79	/**
80	* PCI Globals - This is the host-to-pci bridge and the root bus.
81	*/
82	typedef struct
83	{
84	/** R3 pointer to the device instance. */
85	PPDMDEVINSR3 pDevInsR3;
86	/** R0 pointer to the device instance. */
87	PPDMDEVINSR0 pDevInsR0;
88	/** RC pointer to the device instance. */
89	PPDMDEVINSRC pDevInsRC;
90
91	#if HC_ARCH_BITS == 64
92	uint32_t Alignment0;
93	#endif
94
95	/** PCI bus which is attached to the host-to-PCI bridge. */
96	PCIBUS aPciBus;
97
98
99	/** I/O APIC irq levels */
100	volatile uint32_t uaPciApicIrqLevels[PCI_APIC_IRQ_PINS];
101
102	#if 1 /* Will be moved into the BIOS soon. */
103	/** The next I/O port address which the PCI BIOS will use. */
104	uint32_t uPciBiosIo;
105	/** The next MMIO address which the PCI BIOS will use. */
106	uint32_t uPciBiosMmio;
107	/** Actual bus number. */
108	uint8_t uBus;
109	#endif
110	/* Physical address of PCI config space MMIO region */
111	uint64_t u64PciConfigMMioAddress;
112	/* Length of PCI config space MMIO region */
113	uint64_t u64PciConfigMMioLength;
114
115
116	/** Config register. */
117	uint32_t uConfigReg;
118	} PCIGLOBALS, *PPCIGLOBALS;
119
120
121	typedef struct {
122	uint8_t iBus;
123	uint8_t iDeviceFunc;
124	uint16_t iRegister;
125	} PciAddress;
126
127	/*******************************************************************************
128	* Defined Constants And Macros *
129	*******************************************************************************/
130
131	/** @def VBOX_ICH9PCI_SAVED_STATE_VERSION
132	* Saved state version of the ICH9 PCI bus device.
133	*/
134	#define VBOX_ICH9PCI_SAVED_STATE_VERSION_NOMSI 1
135	#define VBOX_ICH9PCI_SAVED_STATE_VERSION_MSI 2
136	#define VBOX_ICH9PCI_SAVED_STATE_VERSION_CURRENT VBOX_ICH9PCI_SAVED_STATE_VERSION_MSI
137
138	/** Converts a bus instance pointer to a device instance pointer. */
139	#define PCIBUS_2_DEVINS(pPciBus) ((pPciBus)->CTX_SUFF(pDevIns))
140	/** Converts a device instance pointer to a PCIGLOBALS pointer. */
141	#define DEVINS_2_PCIGLOBALS(pDevIns) ((PPCIGLOBALS)(PDMINS_2_DATA(pDevIns, PPCIGLOBALS)))
142	/** Converts a device instance pointer to a PCIBUS pointer. */
143	#define DEVINS_2_PCIBUS(pDevIns) ((PPCIBUS)(&PDMINS_2_DATA(pDevIns, PPCIGLOBALS)->aPciBus))
144	/** Converts a pointer to a PCI root bus instance to a PCIGLOBALS pointer.
145	*/
146	#define PCIROOTBUS_2_PCIGLOBALS(pPciBus) ( (PPCIGLOBALS)((uintptr_t)(pPciBus) - RT_OFFSETOF(PCIGLOBALS, aPciBus)) )
147
148
149	/** @def PCI_LOCK
150	* Acquires the PDM lock. This is a NOP if locking is disabled. */
151	/** @def PCI_UNLOCK
152	* Releases the PDM lock. This is a NOP if locking is disabled. */
153	#define PCI_LOCK(pDevIns, rc) \
154	do { \
155	int rc2 = DEVINS_2_PCIBUS(pDevIns)->CTX_SUFF(pPciHlp)->pfnLock((pDevIns), rc); \
156	if (rc2 != VINF_SUCCESS) \
157	return rc2; \
158	} while (0)
159	#define PCI_UNLOCK(pDevIns) \
160	DEVINS_2_PCIBUS(pDevIns)->CTX_SUFF(pPciHlp)->pfnUnlock(pDevIns)
161
162	#ifndef VBOX_DEVICE_STRUCT_TESTCASE
163
164	RT_C_DECLS_BEGIN
165
166	PDMBOTHCBDECL(void) ich9pciSetIrq(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, int iIrq, int iLevel);
167	PDMBOTHCBDECL(void) ich9pcibridgeSetIrq(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, int iIrq, int iLevel);
168	PDMBOTHCBDECL(int) ich9pciIOPortAddressWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb);
169	PDMBOTHCBDECL(int) ich9pciIOPortAddressRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb);
170	PDMBOTHCBDECL(int) ich9pciIOPortDataWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb);
171	PDMBOTHCBDECL(int) ich9pciIOPortDataRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb);
172	PDMBOTHCBDECL(int) ich9pciMcfgMMIOWrite(PPDMDEVINS pDevIns, void pvUser, RTGCPHYS GCPhysAddr, void pv, unsigned cb);
173	PDMBOTHCBDECL(int) ich9pciMcfgMMIORead (PPDMDEVINS pDevIns, void pvUser, RTGCPHYS GCPhysAddr, void pv, unsigned cb);
174
175	RT_C_DECLS_END
176
177	/* Prototypes */
178	static void ich9pciSetIrqInternal(PPCIGLOBALS pGlobals, uint8_t uDevFn, PPCIDEVICE pPciDev, int iIrq, int iLevel);
179	#ifdef IN_RING3
180	static int ich9pciRegisterInternal(PPCIBUS pBus, int iDev, PPCIDEVICE pPciDev, const char *pszName);
181	static void ich9pciUpdateMappings(PCIDevice *pDev);
182	static DECLCALLBACK(uint32_t) ich9pciConfigReadDev(PCIDevice *aDev, uint32_t u32Address, unsigned len);
183	DECLINLINE(PPCIDEVICE) ich9pciFindBridge(PPCIBUS pBus, uint8_t iBus);
184	static void ich9pciBiosInitDevice(PPCIGLOBALS pGlobals, uint8_t uBus, uint8_t uDevFn, uint8_t cBridgeDepth, uint8_t *paBridgePositions);
185	#endif
186
187	// See 7.2.2. PCI Express Enhanced Configuration Mechanism for details of address
188	// mapping, we take n=6 approach
189	DECLINLINE(void) ich9pciPhysToPciAddr(PPCIGLOBALS pGlobals, RTGCPHYS GCPhysAddr, PciAddress* pPciAddr)
190	{
191	pPciAddr->iBus = (GCPhysAddr >> 20) & ((1<<6) - 1);
192	pPciAddr->iDeviceFunc = (GCPhysAddr >> 12) & ((1<<(5+3)) - 1); // 5 bits - device, 3 bits - function
193	pPciAddr->iRegister = (GCPhysAddr >> 0) & ((1<<(6+4+2)) - 1); // 6 bits - register, 4 bits - extended register, 2 bits -Byte Enable
194	}
195
196	DECLINLINE(void) ich9pciStateToPciAddr(PPCIGLOBALS pGlobals, RTGCPHYS addr, PciAddress* pPciAddr)
197	{
198	pPciAddr->iBus = (pGlobals->uConfigReg >> 16) & 0xff;
199	pPciAddr->iDeviceFunc = (pGlobals->uConfigReg >> 8) & 0xff;
200	pPciAddr->iRegister = (pGlobals->uConfigReg & 0xfc) \| (addr & 3);
201	}
202
203	PDMBOTHCBDECL(void) ich9pciSetIrq(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, int iIrq, int iLevel)
204	{
205	ich9pciSetIrqInternal(PDMINS_2_DATA(pDevIns, PPCIGLOBALS), pPciDev->devfn, pPciDev, iIrq, iLevel);
206	}
207
208	PDMBOTHCBDECL(void) ich9pcibridgeSetIrq(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, int iIrq, int iLevel)
209	{
210	/*
211	* The PCI-to-PCI bridge specification defines how the interrupt pins
212	* are routed from the secondary to the primary bus (see chapter 9).
213	* iIrq gives the interrupt pin the pci device asserted.
214	* We change iIrq here according to the spec and call the SetIrq function
215	* of our parent passing the device which asserted the interrupt instead of the device of the bridge.
216	*/
217	PPCIBUS pBus = PDMINS_2_DATA(pDevIns, PPCIBUS);
218	PPCIDEVICE pPciDevBus = pPciDev;
219	int iIrqPinBridge = iIrq;
220	uint8_t uDevFnBridge = 0;
221
222	/* Walk the chain until we reach the host bus. */
223	do
224	{
225	uDevFnBridge = pBus->aPciDev.devfn;
226	iIrqPinBridge = ((pPciDevBus->devfn >> 3) + iIrqPinBridge) & 3;
227
228	/* Get the parent. */
229	pBus = pBus->aPciDev.Int.s.CTX_SUFF(pBus);
230	pPciDevBus = &pBus->aPciDev;
231	} while (pBus->iBus != 0);
232
233	AssertMsgReturnVoid(pBus->iBus == 0, ("This is not the host pci bus iBus=%d\n", pBus->iBus));
234	ich9pciSetIrqInternal(PCIROOTBUS_2_PCIGLOBALS(pBus), uDevFnBridge, pPciDev, iIrqPinBridge, iLevel);
235	}
236
237	/**
238	* Port I/O Handler for PCI address OUT operations.
239	*
240	* @returns VBox status code.
241	*
242	* @param pDevIns The device instance.
243	* @param pvUser User argument - ignored.
244	* @param uPort Port number used for the OUT operation.
245	* @param u32 The value to output.
246	* @param cb The value size in bytes.
247	*/
248	PDMBOTHCBDECL(int) ich9pciIOPortAddressWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
249	{
250	Log(("ich9pciIOPortAddressWrite: Port=%#x u32=%#x cb=%d\n", Port, u32, cb));
251	NOREF(pvUser);
252	if (cb == 4)
253	{
254	PPCIGLOBALS pThis = PDMINS_2_DATA(pDevIns, PPCIGLOBALS);
255
256	PCI_LOCK(pDevIns, VINF_IOM_HC_IOPORT_WRITE);
257	pThis->uConfigReg = u32 & ~3; /* Bits 0-1 are reserved and we silently clear them */
258	PCI_UNLOCK(pDevIns);
259	}
260
261	return VINF_SUCCESS;
262	}
263
264	/**
265	* Port I/O Handler for PCI address IN operations.
266	*
267	* @returns VBox status code.
268	*
269	* @param pDevIns The device instance.
270	* @param pvUser User argument - ignored.
271	* @param uPort Port number used for the IN operation.
272	* @param pu32 Where to store the result.
273	* @param cb Number of bytes read.
274	*/
275	PDMBOTHCBDECL(int) ich9pciIOPortAddressRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
276	{
277	NOREF(pvUser);
278	if (cb == 4)
279	{
280	PPCIGLOBALS pThis = PDMINS_2_DATA(pDevIns, PPCIGLOBALS);
281	PCI_LOCK(pDevIns, VINF_IOM_HC_IOPORT_READ);
282	*pu32 = pThis->uConfigReg;
283	PCI_UNLOCK(pDevIns);
284	Log(("pciIOPortAddressRead: Port=%#x cb=%d -> %#x\n", Port, cb, *pu32));
285	return VINF_SUCCESS;
286	}
287
288	Log(("ich9pciIOPortAddressRead: Port=%#x cb=%d VERR_IOM_IOPORT_UNUSED\n", Port, cb));
289
290	return VERR_IOM_IOPORT_UNUSED;
291	}
292
293	static int ich9pciDataWriteAddr(PPCIGLOBALS pGlobals, PciAddress* pAddr,
294	uint32_t val, int cb, int rcReschedule)
295	{
296	int rc = VINF_SUCCESS;
297
298	if (pAddr->iRegister > 0xff)
299	{
300	LogRel(("PCI: attempt to write extended register: %x (%d) <- val\n", pAddr->iRegister, cb, val));
301	goto out;
302	}
303
304	if (pAddr->iBus != 0)
305	{
306	if (pGlobals->aPciBus.cBridges)
307	{
308	#ifdef IN_RING3 /** @todo do lookup in R0/RC too! */
309	PPCIDEVICE pBridgeDevice = ich9pciFindBridge(&pGlobals->aPciBus, pAddr->iBus);
310	if (pBridgeDevice)
311	{
312	AssertPtr(pBridgeDevice->Int.s.pfnBridgeConfigWrite);
313	pBridgeDevice->Int.s.pfnBridgeConfigWrite(pBridgeDevice->pDevIns, pAddr->iBus, pAddr->iDeviceFunc, pAddr->iRegister, val, cb);
314	}
315	else
316	{
317	// do nothing, bridge not found
318	}
319	#else
320	rc = rcReschedule;
321	goto out;
322	#endif
323	}
324	}
325	else
326	{
327	if (pGlobals->aPciBus.apDevices[pAddr->iDeviceFunc])
328	{
329	#ifdef IN_RING3
330	R3PTRTYPE(PCIDevice *) aDev = pGlobals->aPciBus.apDevices[pAddr->iDeviceFunc];
331	Log(("ich9pciConfigWrite: %s: addr=%02x val=%08x len=%d\n", aDev->name, pAddr->iRegister, val, cb));
332	aDev->Int.s.pfnConfigWrite(aDev, pAddr->iRegister, val, cb);
333	#else
334	rc = rcReschedule;
335	goto out;
336	#endif
337	}
338	}
339
340	out:
341	Log2(("ich9pciDataWriteAddr: %02x:%02x:%02x reg %x(%d) %x %Rrc\n",
342	pAddr->iBus, pAddr->iDeviceFunc >> 3, pAddr->iDeviceFunc & 0x7, pAddr->iRegister,
343	cb, val, rc));
344
345	return rc;
346	}
347
348	static int ich9pciDataWrite(PPCIGLOBALS pGlobals, uint32_t addr, uint32_t val, int len)
349	{
350	PciAddress aPciAddr;
351
352	LogFlow(("ich9pciDataWrite: config=%08x val=%08x len=%d\n", pGlobals->uConfigReg, val, len));
353
354	if (!(pGlobals->uConfigReg & (1 << 31)))
355	return VINF_SUCCESS;
356
357	if ((pGlobals->uConfigReg & 0x3) != 0)
358	return VINF_SUCCESS;
359
360	/* Compute destination device */
361	ich9pciStateToPciAddr(pGlobals, addr, &aPciAddr);
362
363	return ich9pciDataWriteAddr(pGlobals, &aPciAddr, val, len, VINF_IOM_HC_IOPORT_WRITE);
364	}
365
366	static void ich9pciNoMem(void* ptr, int cb)
367	{
368	for (int i = 0; i < cb; i++)
369	((uint8_t*)ptr)[i] = 0xff;
370	}
371
372	/**
373	* Port I/O Handler for PCI data OUT operations.
374	*
375	* @returns VBox status code.
376	*
377	* @param pDevIns The device instance.
378	* @param pvUser User argument - ignored.
379	* @param uPort Port number used for the OUT operation.
380	* @param u32 The value to output.
381	* @param cb The value size in bytes.
382	*/
383	PDMBOTHCBDECL(int) ich9pciIOPortDataWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
384	{
385	Log(("pciIOPortDataWrite: Port=%#x u32=%#x cb=%d\n", Port, u32, cb));
386	NOREF(pvUser);
387	int rc = VINF_SUCCESS;
388	if (!(Port % cb))
389	{
390	PCI_LOCK(pDevIns, VINF_IOM_HC_IOPORT_WRITE);
391	rc = ich9pciDataWrite(PDMINS_2_DATA(pDevIns, PPCIGLOBALS), Port, u32, cb);
392	PCI_UNLOCK(pDevIns);
393	}
394	else
395	AssertMsgFailed(("Unaligned write to port %#x u32=%#x cb=%d\n", Port, u32, cb));
396	return rc;
397	}
398
399	static int ich9pciDataReadAddr(PPCIGLOBALS pGlobals, PciAddress* pPciAddr, int cb,
400	uint32_t *pu32, int rcReschedule)
401	{
402	int rc = VINF_SUCCESS;
403
404	if (pPciAddr->iRegister > 0xff)
405	{
406	LogRel(("PCI: attempt to read extended register: %x\n", pPciAddr->iRegister));
407	ich9pciNoMem(pu32, cb);
408	goto out;
409	}
410
411
412	if (pPciAddr->iBus != 0)
413	{
414	if (pGlobals->aPciBus.cBridges)
415	{
416	#ifdef IN_RING3 /** @todo do lookup in R0/RC too! */
417	PPCIDEVICE pBridgeDevice = ich9pciFindBridge(&pGlobals->aPciBus, pPciAddr->iBus);
418	if (pBridgeDevice)
419	{
420	AssertPtr(pBridgeDevice->Int.s.pfnBridgeConfigRead);
421	*pu32 = pBridgeDevice->Int.s.pfnBridgeConfigRead(pBridgeDevice->pDevIns, pPciAddr->iBus, pPciAddr->iDeviceFunc, pPciAddr->iRegister, cb);
422	}
423	else
424	ich9pciNoMem(pu32, cb);
425	#else
426	rc = rcReschedule;
427	goto out;
428	#endif
429	} else
430	ich9pciNoMem(pu32, cb);
431	}
432	else
433	{
434	if (pGlobals->aPciBus.apDevices[pPciAddr->iDeviceFunc])
435	{
436	#ifdef IN_RING3
437	R3PTRTYPE(PCIDevice *) aDev = pGlobals->aPciBus.apDevices[pPciAddr->iDeviceFunc];
438	*pu32 = aDev->Int.s.pfnConfigRead(aDev, pPciAddr->iRegister, cb);
439	Log(("ich9pciDataReadAddr: %s: addr=%02x val=%08x len=%d\n", aDev->name, pPciAddr->iRegister, *pu32, cb));
440	#else
441	rc = rcReschedule;
442	goto out;
443	#endif
444	}
445	else
446	ich9pciNoMem(pu32, cb);
447	}
448
449	out:
450	Log2(("ich9pciDataReadAddr: %02x:%02x:%02x reg %x(%d) gave %x %Rrc\n",
451	pPciAddr->iBus, pPciAddr->iDeviceFunc >> 3, pPciAddr->iDeviceFunc & 0x7, pPciAddr->iRegister,
452	cb, *pu32, rc));
453
454	return rc;
455	}
456
457	static int ich9pciDataRead(PPCIGLOBALS pGlobals, uint32_t addr, int cb, uint32_t *pu32)
458	{
459	PciAddress aPciAddr;
460
461	LogFlow(("ich9pciDataRead: config=%x cb=%d\n", pGlobals->uConfigReg, cb));
462
463	*pu32 = 0xffffffff;
464
465	if (!(pGlobals->uConfigReg & (1 << 31)))
466	return VINF_SUCCESS;
467
468	if ((pGlobals->uConfigReg & 0x3) != 0)
469	return VINF_SUCCESS;
470
471	/* Compute destination device */
472	ich9pciStateToPciAddr(pGlobals, addr, &aPciAddr);
473
474	return ich9pciDataReadAddr(pGlobals, &aPciAddr, cb, pu32, VINF_IOM_HC_IOPORT_READ);
475	}
476
477	/**
478	* Port I/O Handler for PCI data IN operations.
479	*
480	* @returns VBox status code.
481	*
482	* @param pDevIns The device instance.
483	* @param pvUser User argument - ignored.
484	* @param uPort Port number used for the IN operation.
485	* @param pu32 Where to store the result.
486	* @param cb Number of bytes read.
487	*/
488	PDMBOTHCBDECL(int) ich9pciIOPortDataRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
489	{
490	NOREF(pvUser);
491	if (!(Port % cb))
492	{
493	PCI_LOCK(pDevIns, VINF_IOM_HC_IOPORT_READ);
494	int rc = ich9pciDataRead(PDMINS_2_DATA(pDevIns, PPCIGLOBALS), Port, cb, pu32);
495	PCI_UNLOCK(pDevIns);
496	Log(("pciIOPortDataRead: Port=%#x cb=%#x -> %#x (%Rrc)\n", Port, cb, *pu32, rc));
497	return rc;
498	}
499	AssertMsgFailed(("Unaligned read from port %#x cb=%d\n", Port, cb));
500	return VERR_IOM_IOPORT_UNUSED;
501	}
502
503	/* Compute mapping of PCI slot and IRQ number to APIC interrupt line */
504	DECLINLINE(int) ich9pciSlot2ApicIrq(uint8_t uSlot, int irq_num)
505	{
506	return (irq_num + uSlot) & 7;
507	}
508
509	/* Add one more level up request on APIC input line */
510	DECLINLINE(void) ich9pciApicLevelUp(PPCIGLOBALS pGlobals, int irq_num)
511	{
512	ASMAtomicIncU32(&pGlobals->uaPciApicIrqLevels[irq_num]);
513	}
514
515	/* Remove one level up request on APIC input line */
516	DECLINLINE(void) ich9pciApicLevelDown(PPCIGLOBALS pGlobals, int irq_num)
517	{
518	ASMAtomicDecU32(&pGlobals->uaPciApicIrqLevels[irq_num]);
519	}
520
521	static void ich9pciApicSetIrq(PPCIBUS pBus, uint8_t uDevFn, PCIDevice *pPciDev, int irq_num1, int iLevel, int iForcedIrq)
522	{
523	/* This is only allowed to be called with a pointer to the root bus. */
524	AssertMsg(pBus->iBus == 0, ("iBus=%u\n", pBus->iBus));
525
526	if (iForcedIrq == -1)
527	{
528	int apic_irq, apic_level;
529	PPCIGLOBALS pGlobals = PCIROOTBUS_2_PCIGLOBALS(pBus);
530	int irq_num = ich9pciSlot2ApicIrq(uDevFn >> 3, irq_num1);
531
532	if ((iLevel & PDM_IRQ_LEVEL_HIGH) == PDM_IRQ_LEVEL_HIGH)
533	ich9pciApicLevelUp(pGlobals, irq_num);
534	else if ((iLevel & PDM_IRQ_LEVEL_HIGH) == PDM_IRQ_LEVEL_LOW)
535	ich9pciApicLevelDown(pGlobals, irq_num);
536
537	apic_irq = irq_num + 0x10;
538	apic_level = pGlobals->uaPciApicIrqLevels[irq_num] != 0;
539	Log3(("ich9pciApicSetIrq: %s: irq_num1=%d level=%d apic_irq=%d apic_level=%d irq_num1=%d\n",
540	R3STRING(pPciDev->name), irq_num1, iLevel, apic_irq, apic_level, irq_num));
541	pBus->CTX_SUFF(pPciHlp)->pfnIoApicSetIrq(pBus->CTX_SUFF(pDevIns), apic_irq, apic_level);
542
543	if ((iLevel & PDM_IRQ_LEVEL_FLIP_FLOP) == PDM_IRQ_LEVEL_FLIP_FLOP)
544	{
545	/**
546	* we raised it few lines above, as PDM_IRQ_LEVEL_FLIP_FLOP has
547	* PDM_IRQ_LEVEL_HIGH bit set
548	*/
549	ich9pciApicLevelDown(pGlobals, irq_num);
550	pPciDev->Int.s.uIrqPinState = PDM_IRQ_LEVEL_LOW;
551	apic_level = pGlobals->uaPciApicIrqLevels[irq_num] != 0;
552	Log3(("ich9pciApicSetIrq: %s: irq_num1=%d level=%d apic_irq=%d apic_level=%d irq_num1=%d (flop)\n",
553	R3STRING(pPciDev->name), irq_num1, iLevel, apic_irq, apic_level, irq_num));
554	pBus->CTX_SUFF(pPciHlp)->pfnIoApicSetIrq(pBus->CTX_SUFF(pDevIns), apic_irq, apic_level);
555	}
556	} else {
557	Log3(("ich9pciApicSetIrq: %s: irq_num1=%d level=%d acpi_irq=%d\n",
558	R3STRING(pPciDev->name), irq_num1, iLevel, iForcedIrq));
559	pBus->CTX_SUFF(pPciHlp)->pfnIoApicSetIrq(pBus->CTX_SUFF(pDevIns), iForcedIrq, iLevel);
560	}
561	}
562
563	static void ich9pciSetIrqInternal(PPCIGLOBALS pGlobals, uint8_t uDevFn, PPCIDEVICE pPciDev, int iIrq, int iLevel)
564	{
565
566	if (PCIDevIsIntxDisabled(pPciDev))
567	{
568	if (MsiIsEnabled(pPciDev))
569	{
570	PPDMDEVINS pDevIns = pGlobals->aPciBus.CTX_SUFF(pDevIns);
571	MsiNotify(pDevIns, pGlobals->aPciBus.CTX_SUFF(pPciHlp), pPciDev, iIrq, iLevel);
572	}
573
574	if (MsixIsEnabled(pPciDev))
575	{
576	PPDMDEVINS pDevIns = pGlobals->aPciBus.CTX_SUFF(pDevIns);
577	MsixNotify(pDevIns, pGlobals->aPciBus.CTX_SUFF(pPciHlp), pPciDev, iIrq, iLevel);
578	}
579	return;
580	}
581
582	PPCIBUS pBus = &pGlobals->aPciBus;
583	const bool fIsAcpiDevice = PCIDevGetDeviceId(pPciDev) == 0x7113;
584
585	/* Check if the state changed. */
586	if (pPciDev->Int.s.uIrqPinState != iLevel)
587	{
588	pPciDev->Int.s.uIrqPinState = (iLevel & PDM_IRQ_LEVEL_HIGH);
589
590	/* Send interrupt to I/O APIC only now. */
591	if (fIsAcpiDevice)
592	/*
593	* ACPI needs special treatment since SCI is hardwired and
594	* should not be affected by PCI IRQ routing tables at the
595	* same time SCI IRQ is shared in PCI sense hence this
596	* kludge (i.e. we fetch the hardwired value from ACPIs
597	* PCI device configuration space).
598	*/
599	ich9pciApicSetIrq(pBus, uDevFn, pPciDev, -1, iLevel, PCIDevGetInterruptLine(pPciDev));
600	else
601	ich9pciApicSetIrq(pBus, uDevFn, pPciDev, iIrq, iLevel, -1);
602	}
603	}
604
605	PDMBOTHCBDECL(int) ich9pciMcfgMMIOWrite(PPDMDEVINS pDevIns, void pvUser, RTGCPHYS GCPhysAddr, void pv, unsigned cb)
606	{
607	PPCIGLOBALS pGlobals = PDMINS_2_DATA(pDevIns, PPCIGLOBALS);
608	PciAddress aDest;
609	uint32_t u32 = 0;
610
611	Log2(("ich9pciMcfgMMIOWrite: %RGp(%d) \n", GCPhysAddr, cb));
612
613	PCI_LOCK(pDevIns, VINF_IOM_HC_MMIO_WRITE);
614
615	ich9pciPhysToPciAddr(pGlobals, GCPhysAddr, &aDest);
616
617	switch (cb)
618	{
619	case 1:
620	u32 = (uint8_t)pv;
621	break;
622	case 2:
623	u32 = (uint16_t)pv;
624	break;
625	case 4:
626	u32 = (uint32_t)pv;
627	break;
628	default:
629	Assert(false);
630	break;
631	}
632	int rc = ich9pciDataWriteAddr(pGlobals, &aDest, u32, cb, VINF_IOM_HC_MMIO_WRITE);
633	PCI_UNLOCK(pDevIns);
634
635	return rc;
636	}
637
638	PDMBOTHCBDECL(int) ich9pciMcfgMMIORead (PPDMDEVINS pDevIns, void pvUser, RTGCPHYS GCPhysAddr, void pv, unsigned cb)
639	{
640	PPCIGLOBALS pGlobals = PDMINS_2_DATA(pDevIns, PPCIGLOBALS);
641	PciAddress aDest;
642	uint32_t rv;
643
644	LogFlow(("ich9pciMcfgMMIORead: %RGp(%d) \n", GCPhysAddr, cb));
645
646	PCI_LOCK(pDevIns, VINF_IOM_HC_MMIO_READ);
647
648	ich9pciPhysToPciAddr(pGlobals, GCPhysAddr, &aDest);
649
650	int rc = ich9pciDataReadAddr(pGlobals, &aDest, cb, &rv, VINF_IOM_HC_MMIO_READ);
651
652	if (RT_SUCCESS(rc))
653	{
654	switch (cb)
655	{
656	case 1:
657	(uint8_t)pv = (uint8_t)rv;
658	break;
659	case 2:
660	(uint16_t)pv = (uint16_t)rv;
661	break;
662	case 4:
663	(uint32_t)pv = (uint32_t)rv;
664	break;
665	default:
666	Assert(false);
667	break;
668	}
669	}
670	PCI_UNLOCK(pDevIns);
671
672	return rc;
673	}
674
675	#ifdef IN_RING3
676
677	DECLINLINE(PPCIDEVICE) ich9pciFindBridge(PPCIBUS pBus, uint8_t iBus)
678	{
679	/* Search for a fitting bridge. */
680	for (uint32_t iBridge = 0; iBridge < pBus->cBridges; iBridge++)
681	{
682	/*
683	* Examine secondary and subordinate bus number.
684	* If the target bus is in the range we pass the request on to the bridge.
685	*/
686	PPCIDEVICE pBridgeTemp = pBus->papBridgesR3[iBridge];
687	AssertMsg(pBridgeTemp && PCIIsPci2PciBridge(pBridgeTemp),
688	("Device is not a PCI bridge but on the list of PCI bridges\n"));
689
690	if ( iBus >= PCIDevGetByte(pBridgeTemp, VBOX_PCI_SECONDARY_BUS)
691	&& iBus <= PCIDevGetByte(pBridgeTemp, VBOX_PCI_SUBORDINATE_BUS))
692	return pBridgeTemp;
693	}
694
695	/* Nothing found. */
696	return NULL;
697	}
698
699	DECLINLINE(uint32_t) ich9pciGetRegionReg(int iRegion)
700	{
701	return (iRegion == PCI_ROM_SLOT) ?
702	VBOX_PCI_ROM_ADDRESS : (VBOX_PCI_BASE_ADDRESS_0 + iRegion * 4);
703	}
704
705	#define INVALID_PCI_ADDRESS ~0U
706
707	static void ich9pciUpdateMappings(PCIDevice* pDev)
708	{
709	PPCIBUS pBus = pDev->Int.s.CTX_SUFF(pBus);
710	uint32_t uLast, uNew;
711
712	int iCmd = PCIDevGetCommand(pDev);
713	for (int iRegion = 0; iRegion < PCI_NUM_REGIONS; iRegion++)
714	{
715	PCIIORegion* pRegion = &pDev->Int.s.aIORegions[iRegion];
716	uint32_t uConfigReg = ich9pciGetRegionReg(iRegion);
717	int32_t iRegionSize = pRegion->size;
718	int rc;
719
720	if (iRegionSize == 0)
721	continue;
722
723	if (pRegion->type & PCI_ADDRESS_SPACE_IO)
724	{
725	/* port IO region */
726	if (iCmd & PCI_COMMAND_IOACCESS)
727	{
728	/* IO access allowed */
729	uNew = ich9pciConfigReadDev(pDev, uConfigReg, 4);
730	uNew &= ~(iRegionSize - 1);
731	uLast = uNew + iRegionSize - 1;
732	/* only 64K ioports on PC */
733	if (uLast <= uNew \|\| uNew == 0 \|\| uLast >= 0x10000)
734	uNew = INVALID_PCI_ADDRESS;
735	} else
736	uNew = INVALID_PCI_ADDRESS;
737	}
738	else
739	{
740	/* MMIO region */
741	if (iCmd & PCI_COMMAND_MEMACCESS)
742	{
743	uNew = ich9pciConfigReadDev(pDev, uConfigReg, 4);
744	/* the ROM slot has a specific enable bit */
745	if (iRegion == PCI_ROM_SLOT && !(uNew & 1))
746	uNew = INVALID_PCI_ADDRESS;
747	else
748	{
749	uNew &= ~(iRegionSize - 1);
750	uLast = uNew + iRegionSize - 1;
751	/* NOTE: we do not support wrapping */
752	/* XXX: as we cannot support really dynamic
753	mappings, we handle specific values as invalid
754	mappings. */
755	if (uLast <= uNew \|\| uNew == 0 \|\| uLast == INVALID_PCI_ADDRESS)
756	uNew = INVALID_PCI_ADDRESS;
757	}
758	} else
759	uNew = INVALID_PCI_ADDRESS;
760	}
761	/* now do the real mapping */
762	if (uNew != pRegion->addr)
763	{
764	if (pRegion->addr != INVALID_PCI_ADDRESS)
765	{
766	if (pRegion->type & PCI_ADDRESS_SPACE_IO)
767	{
768	/* Port IO */
769	rc = PDMDevHlpIOPortDeregister(pDev->pDevIns, pRegion->addr, pRegion->size);
770	AssertRC(rc);
771	}
772	else
773	{
774	RTGCPHYS GCPhysBase = pRegion->addr;
775	if (pBus->pPciHlpR3->pfnIsMMIO2Base(pBus->pDevInsR3, pDev->pDevIns, GCPhysBase))
776	{
777	/* unmap it. */
778	rc = pRegion->map_func(pDev, iRegion, NIL_RTGCPHYS, pRegion->size, (PCIADDRESSSPACE)(pRegion->type));
779	AssertRC(rc);
780	rc = PDMDevHlpMMIO2Unmap(pDev->pDevIns, iRegion, GCPhysBase);
781	}
782	else
783	rc = PDMDevHlpMMIODeregister(pDev->pDevIns, GCPhysBase, pRegion->size);
784	AssertMsgRC(rc, ("rc=%Rrc d=%s i=%d GCPhysBase=%RGp size=%#x\n", rc, pDev->name, iRegion, GCPhysBase, pRegion->size));
785	}
786	}
787	pRegion->addr = uNew;
788	if (pRegion->addr != INVALID_PCI_ADDRESS)
789	{
790	/* finally, map the region */
791	rc = pRegion->map_func(pDev, iRegion,
792	pRegion->addr, pRegion->size,
793	(PCIADDRESSSPACE)(pRegion->type));
794	AssertRC(rc);
795	}
796	}
797	}
798	}
799
800	static DECLCALLBACK(int) ich9pciRegister(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, const char *pszName, int iDev)
801	{
802	PPCIBUS pBus = DEVINS_2_PCIBUS(pDevIns);
803
804	/*
805	* Check input.
806	*/
807	if ( !pszName
808	\|\| !pPciDev
809	\|\| iDev >= (int)RT_ELEMENTS(pBus->apDevices)
810	)
811	{
812	AssertMsgFailed(("Invalid argument! pszName=%s pPciDev=%p iDev=%d\n", pszName, pPciDev, iDev));
813	return VERR_INVALID_PARAMETER;
814	}
815
816	/*
817	* Register the device.
818	*/
819	return ich9pciRegisterInternal(pBus, iDev, pPciDev, pszName);
820	}
821
822
823	static DECLCALLBACK(int) ich9pciRegisterMsi(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, PPDMMSIREG pMsiReg)
824	{
825	int rc;
826
827	rc = MsiInit(pPciDev, pMsiReg);
828	if (rc != VINF_SUCCESS)
829	return rc;
830
831	rc = MsixInit(pPciDev->Int.s.CTX_SUFF(pBus)->CTX_SUFF(pPciHlp), pPciDev, pMsiReg);
832	if (rc != VINF_SUCCESS)
833	return rc;
834
835	return rc;
836	}
837
838
839	static DECLCALLBACK(int) ich9pcibridgeRegister(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, const char *pszName, int iDev)
840	{
841
842	PPCIBUS pBus = PDMINS_2_DATA(pDevIns, PPCIBUS);
843
844	/*
845	* Check input.
846	*/
847	if ( !pszName
848	\|\| !pPciDev
849	\|\| iDev >= (int)RT_ELEMENTS(pBus->apDevices))
850	{
851	AssertMsgFailed(("Invalid argument! pszName=%s pPciDev=%p iDev=%d\n", pszName, pPciDev, iDev));
852	return VERR_INVALID_PARAMETER;
853	}
854
855	/*
856	* Register the device.
857	*/
858	return ich9pciRegisterInternal(pBus, iDev, pPciDev, pszName);
859	}
860
861	static DECLCALLBACK(int) ich9pciIORegionRegister(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, int iRegion, uint32_t cbRegion, PCIADDRESSSPACE enmType, PFNPCIIOREGIONMAP pfnCallback)
862	{
863	/*
864	* Validate.
865	*/
866	AssertMsgReturn( enmType == PCI_ADDRESS_SPACE_MEM
867	\|\| enmType == PCI_ADDRESS_SPACE_IO
868	\|\| enmType == PCI_ADDRESS_SPACE_MEM_PREFETCH,
869	("Invalid enmType=%#x? Or was this a bitmask after all...\n", enmType),
870	VERR_INVALID_PARAMETER);
871	AssertMsgReturn((unsigned)iRegion < PCI_NUM_REGIONS,
872	("Invalid iRegion=%d PCI_NUM_REGIONS=%d\n", iRegion, PCI_NUM_REGIONS),
873	VERR_INVALID_PARAMETER);
874	int iLastSet = ASMBitLastSetU32(cbRegion);
875	AssertMsgReturn( iLastSet != 0
876	&& RT_BIT_32(iLastSet - 1) == cbRegion,
877	("Invalid cbRegion=%#x iLastSet=%#x (not a power of 2 or 0)\n", cbRegion, iLastSet),
878	VERR_INVALID_PARAMETER);
879
880	/*
881	* Register the I/O region.
882	*/
883	PPCIIOREGION pRegion = &pPciDev->Int.s.aIORegions[iRegion];
884	pRegion->addr = INVALID_PCI_ADDRESS;
885	pRegion->size = cbRegion;
886	pRegion->type = enmType;
887	pRegion->map_func = pfnCallback;
888
889	/* Set type in the config space. */
890	uint32_t u32Address = ich9pciGetRegionReg(iRegion);
891	uint32_t u32Value = (enmType == PCI_ADDRESS_SPACE_MEM_PREFETCH ? (1 << 3) : 0)
892	\| (enmType == PCI_ADDRESS_SPACE_IO ? 1 : 0);
893	PCIDevSetDWord(pPciDev, u32Address, u32Value);
894
895	return VINF_SUCCESS;
896	}
897
898	static DECLCALLBACK(void) ich9pciSetConfigCallbacks(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, PFNPCICONFIGREAD pfnRead, PPFNPCICONFIGREAD ppfnReadOld,
899	PFNPCICONFIGWRITE pfnWrite, PPFNPCICONFIGWRITE ppfnWriteOld)
900	{
901	if (ppfnReadOld)
902	*ppfnReadOld = pPciDev->Int.s.pfnConfigRead;
903	pPciDev->Int.s.pfnConfigRead = pfnRead;
904
905	if (ppfnWriteOld)
906	*ppfnWriteOld = pPciDev->Int.s.pfnConfigWrite;
907	pPciDev->Int.s.pfnConfigWrite = pfnWrite;
908	}
909
910	/**
911	* Saves a state of the PCI device.
912	*
913	* @returns VBox status code.
914	* @param pDevIns Device instance of the PCI Bus.
915	* @param pPciDev Pointer to PCI device.
916	* @param pSSM The handle to save the state to.
917	*/
918	static DECLCALLBACK(int) ich9pciGenericSaveExec(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, PSSMHANDLE pSSM)
919	{
920	return SSMR3PutMem(pSSM, &pPciDev->config[0], sizeof(pPciDev->config));
921	}
922
923	static int ich9pciR3CommonSaveExec(PPCIBUS pBus, PSSMHANDLE pSSM)
924	{
925	/*
926	* Iterate thru all the devices.
927	*/
928	for (uint32_t i = 0; i < RT_ELEMENTS(pBus->apDevices); i++)
929	{
930	PPCIDEVICE pDev = pBus->apDevices[i];
931	if (pDev)
932	{
933	/* Device position */
934	SSMR3PutU32(pSSM, i);
935	/* PCI config registers */
936	SSMR3PutMem(pSSM, pDev->config, sizeof(pDev->config));
937
938	/* Device flags */
939	int rc = SSMR3PutU32(pSSM, pDev->Int.s.uFlags);
940	if (RT_FAILURE(rc))
941	return rc;
942
943	/* IRQ pin state */
944	rc = SSMR3PutS32(pSSM, pDev->Int.s.uIrqPinState);
945	if (RT_FAILURE(rc))
946	return rc;
947
948	/* MSI info */
949	rc = SSMR3PutU8(pSSM, pDev->Int.s.u8MsiCapOffset);
950	if (RT_FAILURE(rc))
951	return rc;
952	rc = SSMR3PutU8(pSSM, pDev->Int.s.u8MsiCapSize);
953	if (RT_FAILURE(rc))
954	return rc;
955
956	/* MSI-X info */
957	rc = SSMR3PutU8(pSSM, pDev->Int.s.u8MsixCapOffset);
958	if (RT_FAILURE(rc))
959	return rc;
960	rc = SSMR3PutU8(pSSM, pDev->Int.s.u8MsixCapSize);
961	if (RT_FAILURE(rc))
962	return rc;
963	/* Save MSI-X page state */
964	if (pDev->Int.s.u8MsixCapOffset != 0)
965	{
966	Assert(pDev->Int.s.pMsixPageR3 != NULL);
967	SSMR3PutMem(pSSM, pDev->Int.s.pMsixPageR3, 0x1000);
968	if (RT_FAILURE(rc))
969	return rc;
970	}
971	}
972	}
973	return SSMR3PutU32(pSSM, UINT32_MAX); /* terminator */
974	}
975
976	static DECLCALLBACK(int) ich9pciR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
977	{
978	PPCIGLOBALS pThis = PDMINS_2_DATA(pDevIns, PPCIGLOBALS);
979
980	/*
981	* Bus state data.
982	*/
983	SSMR3PutU32(pSSM, pThis->uConfigReg);
984
985	/*
986	* Save IRQ states.
987	*/
988	for (int i = 0; i < PCI_APIC_IRQ_PINS; i++)
989	SSMR3PutU32(pSSM, pThis->uaPciApicIrqLevels[i]);
990
991	SSMR3PutU32(pSSM, ~0); /* separator */
992
993	return ich9pciR3CommonSaveExec(&pThis->aPciBus, pSSM);
994	}
995
996
997	static DECLCALLBACK(int) ich9pcibridgeR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
998	{
999	PPCIBUS pThis = PDMINS_2_DATA(pDevIns, PPCIBUS);
1000	return ich9pciR3CommonSaveExec(pThis, pSSM);
1001	}
1002
1003
1004	static void ich9pcibridgeConfigWrite(PPDMDEVINSR3 pDevIns, uint8_t iBus, uint8_t iDevice, uint32_t u32Address, uint32_t u32Value, unsigned cb)
1005	{
1006	PPCIBUS pBus = PDMINS_2_DATA(pDevIns, PPCIBUS);
1007
1008	LogFlowFunc((": pDevIns=%p iBus=%d iDevice=%d u32Address=%u u32Value=%u cb=%d\n", pDevIns, iBus, iDevice, u32Address, u32Value, cb));
1009
1010	/* If the current bus is not the target bus search for the bus which contains the device. */
1011	if (iBus != PCIDevGetByte(&pBus->aPciDev, VBOX_PCI_SECONDARY_BUS))
1012	{
1013	PPCIDEVICE pBridgeDevice = ich9pciFindBridge(pBus, iBus);
1014	if (pBridgeDevice)
1015	{
1016	AssertPtr(pBridgeDevice->Int.s.pfnBridgeConfigWrite);
1017	pBridgeDevice->Int.s.pfnBridgeConfigWrite(pBridgeDevice->pDevIns, iBus, iDevice, u32Address, u32Value, cb);
1018	}
1019	}
1020	else
1021	{
1022	/* This is the target bus, pass the write to the device. */
1023	PPCIDEVICE pPciDev = pBus->apDevices[iDevice];
1024	if (pPciDev)
1025	{
1026	Log(("%s: %s: addr=%02x val=%08x len=%d\n", __FUNCTION__, pPciDev->name, u32Address, u32Value, cb));
1027	pPciDev->Int.s.pfnConfigWrite(pPciDev, u32Address, u32Value, cb);
1028	}
1029	}
1030	}
1031
1032	static uint32_t ich9pcibridgeConfigRead(PPDMDEVINSR3 pDevIns, uint8_t iBus, uint8_t iDevice, uint32_t u32Address, unsigned cb)
1033	{
1034	PPCIBUS pBus = PDMINS_2_DATA(pDevIns, PPCIBUS);
1035	uint32_t u32Value;
1036
1037	LogFlowFunc((": pDevIns=%p iBus=%d iDevice=%d u32Address=%u cb=%d\n", pDevIns, iBus, iDevice, u32Address, cb));
1038
1039	/* If the current bus is not the target bus search for the bus which contains the device. */
1040	if (iBus != PCIDevGetByte(&pBus->aPciDev, VBOX_PCI_SECONDARY_BUS))
1041	{
1042	PPCIDEVICE pBridgeDevice = ich9pciFindBridge(pBus, iBus);
1043	if (pBridgeDevice)
1044	{
1045	AssertPtr( pBridgeDevice->Int.s.pfnBridgeConfigRead);
1046	u32Value = pBridgeDevice->Int.s.pfnBridgeConfigRead(pBridgeDevice->pDevIns, iBus, iDevice, u32Address, cb);
1047	}
1048	else
1049	ich9pciNoMem(&u32Value, 4);
1050	}
1051	else
1052	{
1053	/* This is the target bus, pass the read to the device. */
1054	PPCIDEVICE pPciDev = pBus->apDevices[iDevice];
1055	if (pPciDev)
1056	{
1057	u32Value = pPciDev->Int.s.pfnConfigRead(pPciDev, u32Address, cb);
1058	Log(("%s: %s: u32Address=%02x u32Value=%08x cb=%d\n", __FUNCTION__, pPciDev->name, u32Address, u32Value, cb));
1059	}
1060	else
1061	ich9pciNoMem(&u32Value, 4);
1062	}
1063
1064	return u32Value;
1065	}
1066
1067
1068	/**
1069	* Common routine for restoring the config registers of a PCI device.
1070	*
1071	* @param pDev The PCI device.
1072	* @param pbSrcConfig The configuration register values to be loaded.
1073	* @param fIsBridge Whether this is a bridge device or not.
1074	*/
1075	static void pciR3CommonRestoreConfig(PPCIDEVICE pDev, uint8_t const *pbSrcConfig, bool fIsBridge)
1076	{
1077	/*
1078	* This table defines the fields for normal devices and bridge devices, and
1079	* the order in which they need to be restored.
1080	*/
1081	static const struct PciField
1082	{
1083	uint8_t off;
1084	uint8_t cb;
1085	uint8_t fWritable;
1086	uint8_t fBridge;
1087	const char *pszName;
1088	} s_aFields[] =
1089	{
1090	/* off,cb,fW,fB, pszName */
1091	{ VBOX_PCI_VENDOR_ID, 2, 0, 3, "VENDOR_ID" },
1092	{ VBOX_PCI_DEVICE_ID, 2, 0, 3, "DEVICE_ID" },
1093	{ VBOX_PCI_STATUS, 2, 1, 3, "STATUS" },
1094	{ VBOX_PCI_REVISION_ID, 1, 0, 3, "REVISION_ID" },
1095	{ VBOX_PCI_CLASS_PROG, 1, 0, 3, "CLASS_PROG" },
1096	{ VBOX_PCI_CLASS_SUB, 1, 0, 3, "CLASS_SUB" },
1097	{ VBOX_PCI_CLASS_BASE, 1, 0, 3, "CLASS_BASE" },
1098	{ VBOX_PCI_CACHE_LINE_SIZE, 1, 1, 3, "CACHE_LINE_SIZE" },
1099	{ VBOX_PCI_LATENCY_TIMER, 1, 1, 3, "LATENCY_TIMER" },
1100	{ VBOX_PCI_HEADER_TYPE, 1, 0, 3, "HEADER_TYPE" },
1101	{ VBOX_PCI_BIST, 1, 1, 3, "BIST" },
1102	{ VBOX_PCI_BASE_ADDRESS_0, 4, 1, 3, "BASE_ADDRESS_0" },
1103	{ VBOX_PCI_BASE_ADDRESS_1, 4, 1, 3, "BASE_ADDRESS_1" },
1104	{ VBOX_PCI_BASE_ADDRESS_2, 4, 1, 1, "BASE_ADDRESS_2" },
1105	{ VBOX_PCI_PRIMARY_BUS, 1, 1, 2, "PRIMARY_BUS" }, // fWritable = ??
1106	{ VBOX_PCI_SECONDARY_BUS, 1, 1, 2, "SECONDARY_BUS" }, // fWritable = ??
1107	{ VBOX_PCI_SUBORDINATE_BUS, 1, 1, 2, "SUBORDINATE_BUS" }, // fWritable = ??
1108	{ VBOX_PCI_SEC_LATENCY_TIMER, 1, 1, 2, "SEC_LATENCY_TIMER" }, // fWritable = ??
1109	{ VBOX_PCI_BASE_ADDRESS_3, 4, 1, 1, "BASE_ADDRESS_3" },
1110	{ VBOX_PCI_IO_BASE, 1, 1, 2, "IO_BASE" }, // fWritable = ??
1111	{ VBOX_PCI_IO_LIMIT, 1, 1, 2, "IO_LIMIT" }, // fWritable = ??
1112	{ VBOX_PCI_SEC_STATUS, 2, 1, 2, "SEC_STATUS" }, // fWritable = ??
1113	{ VBOX_PCI_BASE_ADDRESS_4, 4, 1, 1, "BASE_ADDRESS_4" },
1114	{ VBOX_PCI_MEMORY_BASE, 2, 1, 2, "MEMORY_BASE" }, // fWritable = ??
1115	{ VBOX_PCI_MEMORY_LIMIT, 2, 1, 2, "MEMORY_LIMIT" }, // fWritable = ??
1116	{ VBOX_PCI_BASE_ADDRESS_5, 4, 1, 1, "BASE_ADDRESS_5" },
1117	{ VBOX_PCI_PREF_MEMORY_BASE, 2, 1, 2, "PREF_MEMORY_BASE" }, // fWritable = ??
1118	{ VBOX_PCI_PREF_MEMORY_LIMIT, 2, 1, 2, "PREF_MEMORY_LIMIT" }, // fWritable = ??
1119	{ VBOX_PCI_CARDBUS_CIS, 4, 1, 1, "CARDBUS_CIS" }, // fWritable = ??
1120	{ VBOX_PCI_PREF_BASE_UPPER32, 4, 1, 2, "PREF_BASE_UPPER32" }, // fWritable = ??
1121	{ VBOX_PCI_SUBSYSTEM_VENDOR_ID, 2, 0, 1, "SUBSYSTEM_VENDOR_ID" },// fWritable = !?
1122	{ VBOX_PCI_PREF_LIMIT_UPPER32, 4, 1, 2, "PREF_LIMIT_UPPER32" },// fWritable = ??
1123	{ VBOX_PCI_SUBSYSTEM_ID, 2, 0, 1, "SUBSYSTEM_ID" }, // fWritable = !?
1124	{ VBOX_PCI_ROM_ADDRESS, 4, 1, 1, "ROM_ADDRESS" }, // fWritable = ?!
1125	{ VBOX_PCI_IO_BASE_UPPER16, 2, 1, 2, "IO_BASE_UPPER16" }, // fWritable = ?!
1126	{ VBOX_PCI_IO_LIMIT_UPPER16, 2, 1, 2, "IO_LIMIT_UPPER16" }, // fWritable = ?!
1127	{ VBOX_PCI_CAPABILITY_LIST, 4, 0, 3, "CAPABILITY_LIST" }, // fWritable = !? cb=!?
1128	{ VBOX_PCI_RESERVED_38, 4, 1, 1, "RESERVED_38" }, // ???
1129	{ VBOX_PCI_ROM_ADDRESS_BR, 4, 1, 2, "ROM_ADDRESS_BR" }, // fWritable = !? cb=!? fBridge=!?
1130	{ VBOX_PCI_INTERRUPT_LINE, 1, 1, 3, "INTERRUPT_LINE" }, // fBridge=??
1131	{ VBOX_PCI_INTERRUPT_PIN, 1, 0, 3, "INTERRUPT_PIN" }, // fBridge=??
1132	{ VBOX_PCI_MIN_GNT, 1, 0, 1, "MIN_GNT" },
1133	{ VBOX_PCI_BRIDGE_CONTROL, 2, 1, 2, "BRIDGE_CONTROL" }, // fWritable = !?
1134	{ VBOX_PCI_MAX_LAT, 1, 0, 1, "MAX_LAT" },
1135	/* The COMMAND register must come last as it requires the ADDRESS
1136	registers to be restored before we pretent to change it from 0 to
1137	whatever value the guest assigned it. */
1138	{ VBOX_PCI_COMMAND, 2, 1, 3, "COMMAND" },
1139	};
1140
1141	#ifdef RT_STRICT
1142	/* Check that we've got full register coverage. */
1143	uint32_t bmDevice[0x40 / 32];
1144	uint32_t bmBridge[0x40 / 32];
1145	RT_ZERO(bmDevice);
1146	RT_ZERO(bmBridge);
1147	for (uint32_t i = 0; i < RT_ELEMENTS(s_aFields); i++)
1148	{
1149	uint8_t off = s_aFields[i].off;
1150	uint8_t cb = s_aFields[i].cb;
1151	uint8_t f = s_aFields[i].fBridge;
1152	while (cb-- > 0)
1153	{
1154	if (f & 1) AssertMsg(!ASMBitTest(bmDevice, off), ("%#x\n", off));
1155	if (f & 2) AssertMsg(!ASMBitTest(bmBridge, off), ("%#x\n", off));
1156	if (f & 1) ASMBitSet(bmDevice, off);
1157	if (f & 2) ASMBitSet(bmBridge, off);
1158	off++;
1159	}
1160	}
1161	for (uint32_t off = 0; off < 0x40; off++)
1162	{
1163	AssertMsg(ASMBitTest(bmDevice, off), ("%#x\n", off));
1164	AssertMsg(ASMBitTest(bmBridge, off), ("%#x\n", off));
1165	}
1166	#endif
1167
1168	/*
1169	* Loop thru the fields covering the 64 bytes of standard registers.
1170	*/
1171	uint8_t const fBridge = fIsBridge ? 2 : 1;
1172	uint8_t *pbDstConfig = &pDev->config[0];
1173	for (uint32_t i = 0; i < RT_ELEMENTS(s_aFields); i++)
1174	if (s_aFields[i].fBridge & fBridge)
1175	{
1176	uint8_t const off = s_aFields[i].off;
1177	uint8_t const cb = s_aFields[i].cb;
1178	uint32_t u32Src;
1179	uint32_t u32Dst;
1180	switch (cb)
1181	{
1182	case 1:
1183	u32Src = pbSrcConfig[off];
1184	u32Dst = pbDstConfig[off];
1185	break;
1186	case 2:
1187	u32Src = (uint16_t const )&pbSrcConfig[off];
1188	u32Dst = (uint16_t const )&pbDstConfig[off];
1189	break;
1190	case 4:
1191	u32Src = (uint32_t const )&pbSrcConfig[off];
1192	u32Dst = (uint32_t const )&pbDstConfig[off];
1193	break;
1194	default:
1195	AssertFailed();
1196	continue;
1197	}
1198
1199	if ( u32Src != u32Dst
1200	\|\| off == VBOX_PCI_COMMAND)
1201	{
1202	if (u32Src != u32Dst)
1203	{
1204	if (!s_aFields[i].fWritable)
1205	LogRel(("PCI: %8s/%u: %2u-bit field %s: %x -> %x - !READ ONLY!\n",
1206	pDev->name, pDev->pDevIns->iInstance, cb*8, s_aFields[i].pszName, u32Dst, u32Src));
1207	else
1208	LogRel(("PCI: %8s/%u: %2u-bit field %s: %x -> %x\n",
1209	pDev->name, pDev->pDevIns->iInstance, cb*8, s_aFields[i].pszName, u32Dst, u32Src));
1210	}
1211	if (off == VBOX_PCI_COMMAND)
1212	PCIDevSetCommand(pDev, 0); /* For remapping, see ich9pciR3CommonLoadExec. */
1213	pDev->Int.s.pfnConfigWrite(pDev, off, u32Src, cb);
1214	}
1215	}
1216
1217	/*
1218	* The device dependent registers.
1219	*
1220	* We will not use ConfigWrite here as we have no clue about the size
1221	* of the registers, so the device is responsible for correctly
1222	* restoring functionality governed by these registers.
1223	*/
1224	for (uint32_t off = 0x40; off < sizeof(pDev->config); off++)
1225	if (pbDstConfig[off] != pbSrcConfig[off])
1226	{
1227	LogRel(("PCI: %8s/%u: register %02x: %02x -> %02x\n",
1228	pDev->name, pDev->pDevIns->iInstance, off, pbDstConfig[off], pbSrcConfig[off])); /** @todo make this Log() later. */
1229	pbDstConfig[off] = pbSrcConfig[off];
1230	}
1231	}
1232
1233	/**
1234	* Common worker for ich9pciR3LoadExec and ich9pcibridgeR3LoadExec.
1235	*
1236	* @returns VBox status code.
1237	* @param pBus The bus which data is being loaded.
1238	* @param pSSM The saved state handle.
1239	* @param uVersion The data version.
1240	* @param uPass The pass.
1241	*/
1242	static DECLCALLBACK(int) ich9pciR3CommonLoadExec(PPCIBUS pBus, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
1243	{
1244	uint32_t u32;
1245	uint32_t i;
1246	int rc;
1247
1248	Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
1249
1250	/*
1251	* Iterate thru all the devices and write 0 to the COMMAND register so
1252	* that all the memory is unmapped before we start restoring the saved
1253	* mapping locations.
1254	*
1255	* The register value is restored afterwards so we can do proper
1256	* LogRels in pciR3CommonRestoreConfig.
1257	*/
1258	for (i = 0; i < RT_ELEMENTS(pBus->apDevices); i++)
1259	{
1260	PPCIDEVICE pDev = pBus->apDevices[i];
1261	if (pDev)
1262	{
1263	uint16_t u16 = PCIDevGetCommand(pDev);
1264	pDev->Int.s.pfnConfigWrite(pDev, VBOX_PCI_COMMAND, 0, 2);
1265	PCIDevSetCommand(pDev, u16);
1266	Assert(PCIDevGetCommand(pDev) == u16);
1267	}
1268	}
1269
1270	void* pvMsixPage = RTMemTmpAllocZ(0x1000);
1271	/*
1272	* Iterate all the devices.
1273	*/
1274	for (i = 0;; i++)
1275	{
1276	PPCIDEVICE pDev;
1277	PCIDEVICE DevTmp;
1278
1279	/* index / terminator */
1280	rc = SSMR3GetU32(pSSM, &u32);
1281	if (RT_FAILURE(rc))
1282	return rc;
1283	if (u32 == (uint32_t)~0)
1284	break;
1285	if ( u32 >= RT_ELEMENTS(pBus->apDevices)
1286	\|\| u32 < i)
1287	{
1288	AssertMsgFailed(("u32=%#x i=%#x\n", u32, i));
1289	goto out;
1290	}
1291
1292	/* skip forward to the device checking that no new devices are present. */
1293	for (; i < u32; i++)
1294	{
1295	pDev = pBus->apDevices[i];
1296	if (pDev)
1297	{
1298	LogRel(("New device in slot %#x, %s (vendor=%#06x device=%#06x)\n", i, pDev->name,
1299	PCIDevGetVendorId(pDev), PCIDevGetDeviceId(pDev)));
1300	if (SSMR3HandleGetAfter(pSSM) != SSMAFTER_DEBUG_IT)
1301	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("New device in slot %#x, %s (vendor=%#06x device=%#06x)"),
1302	i, pDev->name, PCIDevGetVendorId(pDev), PCIDevGetDeviceId(pDev));
1303	}
1304	}
1305
1306	/* get the data */
1307	DevTmp.Int.s.uFlags = 0;
1308	DevTmp.Int.s.u8MsiCapOffset = 0;
1309	DevTmp.Int.s.u8MsiCapSize = 0;
1310	DevTmp.Int.s.u8MsixCapOffset = 0;
1311	DevTmp.Int.s.u8MsixCapSize = 0;
1312	DevTmp.Int.s.uIrqPinState = ~0; /* Invalid value in case we have an older saved state to force a state change in pciSetIrq. */
1313	SSMR3GetMem(pSSM, DevTmp.config, sizeof(DevTmp.config));
1314
1315	rc = SSMR3GetU32(pSSM, &DevTmp.Int.s.uFlags);
1316	if (RT_FAILURE(rc))
1317	goto out;
1318
1319	rc = SSMR3GetS32(pSSM, &DevTmp.Int.s.uIrqPinState);
1320	if (RT_FAILURE(rc))
1321	goto out;
1322
1323	rc = SSMR3GetU8(pSSM, &DevTmp.Int.s.u8MsiCapOffset);
1324	if (RT_FAILURE(rc))
1325	goto out;
1326
1327	rc = SSMR3GetU8(pSSM, &DevTmp.Int.s.u8MsiCapSize);
1328	if (RT_FAILURE(rc))
1329	goto out;
1330
1331	rc = SSMR3GetU8(pSSM, &DevTmp.Int.s.u8MsixCapOffset);
1332	if (RT_FAILURE(rc))
1333	goto out;
1334
1335	rc = SSMR3GetU8(pSSM, &DevTmp.Int.s.u8MsixCapSize);
1336	if (RT_FAILURE(rc))
1337	goto out;
1338
1339	/* Load MSI-X page state */
1340	if (DevTmp.Int.s.u8MsixCapOffset != 0)
1341	{
1342	Assert(pvMsixPage != NULL);
1343	SSMR3GetMem(pSSM, pvMsixPage, 0x1000);
1344	if (RT_FAILURE(rc))
1345	goto out;
1346	}
1347
1348	/* check that it's still around. */
1349	pDev = pBus->apDevices[i];
1350	if (!pDev)
1351	{
1352	LogRel(("Device in slot %#x has been removed! vendor=%#06x device=%#06x\n", i,
1353	PCIDevGetVendorId(&DevTmp), PCIDevGetDeviceId(&DevTmp)));
1354	if (SSMR3HandleGetAfter(pSSM) != SSMAFTER_DEBUG_IT)
1355	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Device in slot %#x has been removed! vendor=%#06x device=%#06x"),
1356	i, PCIDevGetVendorId(&DevTmp), PCIDevGetDeviceId(&DevTmp));
1357	continue;
1358	}
1359
1360	/* match the vendor id assuming that this will never be changed. */
1361	if ( PCIDevGetVendorId(&DevTmp) != PCIDevGetVendorId(pDev))
1362	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Device in slot %#x (%s) vendor id mismatch! saved=%.4Rhxs current=%.4Rhxs"),
1363	i, pDev->name, PCIDevGetVendorId(&DevTmp), PCIDevGetVendorId(pDev));
1364
1365	/* commit the loaded device config. */
1366	pciR3CommonRestoreConfig(pDev, &DevTmp.config[0], false ); /** @todo fix bridge fun! */
1367
1368	pDev->Int.s.uIrqPinState = DevTmp.Int.s.uIrqPinState;
1369	pDev->Int.s.u8MsiCapOffset = DevTmp.Int.s.u8MsiCapOffset;
1370	pDev->Int.s.u8MsiCapSize = DevTmp.Int.s.u8MsiCapSize;
1371	pDev->Int.s.u8MsixCapOffset = DevTmp.Int.s.u8MsixCapOffset;
1372	pDev->Int.s.u8MsixCapSize = DevTmp.Int.s.u8MsixCapSize;
1373	if (DevTmp.Int.s.u8MsixCapSize != 0)
1374	{
1375	Assert(pDev->Int.s.pMsixPageR3 != NULL);
1376	memcpy(pDev->Int.s.pMsixPageR3, pvMsixPage, 0x1000);
1377	}
1378	}
1379
1380	out:
1381	if (pvMsixPage)
1382	RTMemTmpFree(pvMsixPage);
1383
1384	return rc;
1385	}
1386
1387	/**
1388	* Loads a saved PCI device state.
1389	*
1390	* @returns VBox status code.
1391	* @param pDevIns Device instance of the PCI Bus.
1392	* @param pPciDev Pointer to PCI device.
1393	* @param pSSM The handle to the saved state.
1394	*/
1395	static DECLCALLBACK(int) ich9pciGenericLoadExec(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, PSSMHANDLE pSSM)
1396	{
1397	return SSMR3GetMem(pSSM, &pPciDev->config[0], sizeof(pPciDev->config));
1398	}
1399
1400	static DECLCALLBACK(int) ich9pciR3LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
1401	{
1402	PPCIGLOBALS pThis = PDMINS_2_DATA(pDevIns, PPCIGLOBALS);
1403	PPCIBUS pBus = &pThis->aPciBus;
1404	uint32_t u32;
1405	int rc;
1406
1407	/* We ignore this version as there's no saved state with it anyway */
1408	if (uVersion == VBOX_ICH9PCI_SAVED_STATE_VERSION_NOMSI)
1409	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
1410	if (uVersion > VBOX_ICH9PCI_SAVED_STATE_VERSION_MSI)
1411	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
1412
1413	/*
1414	* Bus state data.
1415	*/
1416	SSMR3GetU32(pSSM, &pThis->uConfigReg);
1417
1418	/*
1419	* Load IRQ states.
1420	*/
1421	for (int i = 0; i < PCI_APIC_IRQ_PINS; i++)
1422	SSMR3GetU32(pSSM, (uint32_t*)&pThis->uaPciApicIrqLevels[i]);
1423
1424	/* separator */
1425	rc = SSMR3GetU32(pSSM, &u32);
1426	if (RT_FAILURE(rc))
1427	return rc;
1428	if (u32 != (uint32_t)~0)
1429	AssertMsgFailedReturn(("u32=%#x\n", u32), rc);
1430
1431	return ich9pciR3CommonLoadExec(pBus, pSSM, uVersion, uPass);
1432	}
1433
1434	static DECLCALLBACK(int) ich9pcibridgeR3LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
1435	{
1436	PPCIBUS pThis = PDMINS_2_DATA(pDevIns, PPCIBUS);
1437	if (uVersion > VBOX_ICH9PCI_SAVED_STATE_VERSION_MSI)
1438	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
1439	return ich9pciR3CommonLoadExec(pThis, pSSM, uVersion, uPass);
1440	}
1441
1442	static uint32_t ich9pciConfigRead(PPCIGLOBALS pGlobals, uint8_t uBus, uint8_t uDevFn, uint32_t addr, uint32_t len)
1443	{
1444	/* Will only work in LSB case */
1445	uint32_t u32Val;
1446	PciAddress aPciAddr;
1447
1448	aPciAddr.iBus = uBus;
1449	aPciAddr.iDeviceFunc = uDevFn;
1450	aPciAddr.iRegister = addr;
1451
1452	/* cannot be rescheduled, as already in R3 */
1453	int rc = ich9pciDataReadAddr(pGlobals, &aPciAddr, len, &u32Val, VERR_INTERNAL_ERROR);
1454	AssertRC(rc);
1455	return u32Val;
1456	}
1457
1458	static void ich9pciConfigWrite(PPCIGLOBALS pGlobals, uint8_t uBus, uint8_t uDevFn, uint32_t addr, uint32_t val, uint32_t len)
1459	{
1460	PciAddress aPciAddr;
1461
1462	aPciAddr.iBus = uBus;
1463	aPciAddr.iDeviceFunc = uDevFn;
1464	aPciAddr.iRegister = addr;
1465
1466	/* cannot be rescheduled, as already in R3 */
1467	int rc = ich9pciDataWriteAddr(pGlobals, &aPciAddr, val, len, VERR_INTERNAL_ERROR);
1468	AssertRC(rc);
1469	}
1470
1471	static void ich9pciSetRegionAddress(PPCIGLOBALS pGlobals, uint8_t uBus, uint8_t uDevFn, int iRegion, uint32_t addr)
1472	{
1473	uint32_t uReg = ich9pciGetRegionReg(iRegion);
1474
1475	/* Read memory type first. */
1476	uint8_t uResourceType = ich9pciConfigRead(pGlobals, uBus, uDevFn, uReg, 1);
1477	/* Read command register. */
1478	uint16_t uCmd = ich9pciConfigRead(pGlobals, uBus, uDevFn, VBOX_PCI_COMMAND, 2);
1479
1480	if ( iRegion == PCI_ROM_SLOT )
1481	uCmd \|= PCI_COMMAND_MEMACCESS;
1482	else if ((uResourceType & PCI_ADDRESS_SPACE_IO) == PCI_ADDRESS_SPACE_IO)
1483	uCmd \|= PCI_COMMAND_IOACCESS; /* Enable I/O space access. */
1484	else /* The region is MMIO. */
1485	uCmd \|= PCI_COMMAND_MEMACCESS; /* Enable MMIO access. */
1486
1487	/* Write address of the device. */
1488	ich9pciConfigWrite(pGlobals, uBus, uDevFn, uReg, addr, 4);
1489
1490	/* enable memory mappings */
1491	ich9pciConfigWrite(pGlobals, uBus, uDevFn, VBOX_PCI_COMMAND, uCmd, 2);
1492	}
1493
1494
1495	static void ich9pciBiosInitBridge(PPCIGLOBALS pGlobals, uint8_t uBus, uint8_t uDevFn, uint8_t cBridgeDepth, uint8_t *paBridgePositions)
1496	{
1497	ich9pciConfigWrite(pGlobals, uBus, uDevFn, VBOX_PCI_SECONDARY_BUS, pGlobals->uBus, 1);
1498	/* Temporary until we know how many other bridges are behind this one. */
1499	ich9pciConfigWrite(pGlobals, uBus, uDevFn, VBOX_PCI_SUBORDINATE_BUS, 0xff, 1);
1500
1501	/* Add position of this bridge into the array. */
1502	paBridgePositions[cBridgeDepth+1] = (uDevFn >> 3);
1503
1504	/*
1505	* The I/O range for the bridge must be aligned to a 4KB boundary.
1506	* This does not change anything really as the access to the device is not going
1507	* through the bridge but we want to be compliant to the spec.
1508	*/
1509	if ((pGlobals->uPciBiosIo % 4096) != 0)
1510	{
1511	pGlobals->uPciBiosIo = RT_ALIGN_32(pGlobals->uPciBiosIo, 4*1024);
1512	Log(("%s: Aligned I/O start address. New address %#x\n", __FUNCTION__, pGlobals->uPciBiosIo));
1513	}
1514	ich9pciConfigWrite(pGlobals, uBus, uDevFn, VBOX_PCI_IO_BASE, (pGlobals->uPciBiosIo >> 8) & 0xf0, 1);
1515
1516	/* The MMIO range for the bridge must be aligned to a 1MB boundary. */
1517	if ((pGlobals->uPciBiosMmio % (1024 * 1024)) != 0)
1518	{
1519	pGlobals->uPciBiosMmio = RT_ALIGN_32(pGlobals->uPciBiosMmio, 1024*1024);
1520	Log(("%s: Aligned MMIO start address. New address %#x\n", __FUNCTION__, pGlobals->uPciBiosMmio));
1521	}
1522	ich9pciConfigWrite(pGlobals, uBus, uDevFn, VBOX_PCI_MEMORY_BASE, (pGlobals->uPciBiosMmio >> 16) & UINT32_C(0xffff0), 2);
1523
1524	/* Save values to compare later to. */
1525	uint32_t u32IoAddressBase = pGlobals->uPciBiosIo;
1526	uint32_t u32MMIOAddressBase = pGlobals->uPciBiosMmio;
1527
1528	/* Init devices behind the bridge and possibly other bridges as well. */
1529	for (int iDev = 0; iDev <= 255; iDev++)
1530	ich9pciBiosInitDevice(pGlobals, uBus + 1, iDev, cBridgeDepth + 1, paBridgePositions);
1531
1532	/* The number of bridges behind the this one is now available. */
1533	ich9pciConfigWrite(pGlobals, uBus, uDevFn, VBOX_PCI_SUBORDINATE_BUS, pGlobals->uBus, 1);
1534
1535	/*
1536	* Set I/O limit register. If there is no device with I/O space behind the bridge
1537	* we set a lower value than in the base register.
1538	* The result with a real bridge is that no I/O transactions are passed to the secondary
1539	* interface. Again this doesn't really matter here but we want to be compliant to the spec.
1540	*/
1541	if ((u32IoAddressBase != pGlobals->uPciBiosIo) && ((pGlobals->uPciBiosIo % 4096) != 0))
1542	{
1543	/* The upper boundary must be one byte less than a 4KB boundary. */
1544	pGlobals->uPciBiosIo = RT_ALIGN_32(pGlobals->uPciBiosIo, 4*1024);
1545	}
1546
1547	ich9pciConfigWrite(pGlobals, uBus, uDevFn, VBOX_PCI_IO_LIMIT, ((pGlobals->uPciBiosIo >> 8) & 0xf0) - 1, 1);
1548
1549	/* Same with the MMIO limit register but with 1MB boundary here. */
1550	if ((u32MMIOAddressBase != pGlobals->uPciBiosMmio) && ((pGlobals->uPciBiosMmio % (1024 * 1024)) != 0))
1551	{
1552	/* The upper boundary must be one byte less than a 1MB boundary. */
1553	pGlobals->uPciBiosMmio = RT_ALIGN_32(pGlobals->uPciBiosMmio, 1024*1024);
1554	}
1555	ich9pciConfigWrite(pGlobals, uBus, uDevFn, VBOX_PCI_MEMORY_LIMIT, ((pGlobals->uPciBiosMmio >> 16) & UINT32_C(0xfff0)) - 1, 2);
1556
1557	/*
1558	* Set the prefetch base and limit registers. We currently have no device with a prefetchable region
1559	* which may be behind a bridge. That's why it is unconditionally disabled here atm by writing a higher value into
1560	* the base register than in the limit register.
1561	*/
1562	ich9pciConfigWrite(pGlobals, uBus, uDevFn, VBOX_PCI_PREF_MEMORY_BASE, 0xfff0, 2);
1563	ich9pciConfigWrite(pGlobals, uBus, uDevFn, VBOX_PCI_PREF_MEMORY_LIMIT, 0x0, 2);
1564	ich9pciConfigWrite(pGlobals, uBus, uDevFn, VBOX_PCI_PREF_BASE_UPPER32, 0x00, 4);
1565	ich9pciConfigWrite(pGlobals, uBus, uDevFn, VBOX_PCI_PREF_LIMIT_UPPER32, 0x00, 4);
1566	}
1567
1568	static void ich9pciBiosInitDevice(PPCIGLOBALS pGlobals, uint8_t uBus, uint8_t uDevFn, uint8_t cBridgeDepth, uint8_t *paBridgePositions)
1569	{
1570	uint32_t *paddr;
1571	uint16_t uDevClass, uVendor, uDevice;
1572	uint8_t uCmd;
1573
1574	uDevClass = ich9pciConfigRead(pGlobals, uBus, uDevFn, VBOX_PCI_CLASS_DEVICE, 2);
1575	uVendor = ich9pciConfigRead(pGlobals, uBus, uDevFn, VBOX_PCI_VENDOR_ID, 2);
1576	uDevice = ich9pciConfigRead(pGlobals, uBus, uDevFn, VBOX_PCI_DEVICE_ID, 2);
1577
1578	/* If device is present */
1579	if (uVendor == 0xffff)
1580	return;
1581
1582	switch (uDevClass)
1583	{
1584	case 0x0101:
1585	/* IDE controller */
1586	ich9pciConfigWrite(pGlobals, uBus, uDevFn, 0x40, 0x8000, 2); /* enable IDE0 */
1587	ich9pciConfigWrite(pGlobals, uBus, uDevFn, 0x42, 0x8000, 2); /* enable IDE1 */
1588	goto default_map;
1589	break;
1590	case 0x0300:
1591	/* VGA controller */
1592	if (uVendor != 0x80ee)
1593	goto default_map;
1594	/* VGA: map frame buffer to default Bochs VBE address */
1595	ich9pciSetRegionAddress(pGlobals, uBus, uDevFn, 0, 0xE0000000);
1596	/*
1597	* Legacy VGA I/O ports are implicitly decoded by a VGA class device. But
1598	* only the framebuffer (i.e., a memory region) is explicitly registered via
1599	* ich9pciSetRegionAddress, so I/O decoding must be enabled manually.
1600	*/
1601	uCmd = ich9pciConfigRead(pGlobals, uBus, uDevFn, VBOX_PCI_COMMAND, 1);
1602	ich9pciConfigWrite(pGlobals, uBus, uDevFn, VBOX_PCI_COMMAND,
1603	/* Enable I/O space access. */
1604	uCmd \| PCI_COMMAND_IOACCESS,
1605	1);
1606	break;
1607	case 0x0800:
1608	/* PIC */
1609	if (uVendor == 0x1014)
1610	{
1611	/* IBM */
1612	if (uDevice == 0x0046 \|\| uDevice == 0xFFFF)
1613	/* MPIC & MPIC2 */
1614	ich9pciSetRegionAddress(pGlobals, uBus, uDevFn, 0, 0x80800000 + 0x00040000);
1615	}
1616	break;
1617	case 0xff00:
1618	if ((uVendor == 0x0106b)
1619	&& (uDevice == 0x0017 \|\| uDevice == 0x0022))
1620	{
1621	/* macio bridge */
1622	ich9pciSetRegionAddress(pGlobals, uBus, uDevFn, 0, 0x80800000);
1623	}
1624	break;
1625	case 0x0604:
1626	/* PCI-to-PCI bridge. */
1627	ich9pciConfigWrite(pGlobals, uBus, uDevFn, VBOX_PCI_PRIMARY_BUS, uBus, 1);
1628
1629	AssertMsg(pGlobals->uBus < 255, ("Too many bridges on the bus\n"));
1630	pGlobals->uBus++;
1631	ich9pciBiosInitBridge(pGlobals, uBus, uDevFn, cBridgeDepth, paBridgePositions);
1632	break;
1633	default:
1634	default_map:
1635	{
1636	/* default memory mappings */
1637	/*
1638	* We ignore ROM region here.
1639	*/
1640	for (int iRegion = 0; iRegion < (PCI_NUM_REGIONS-1); iRegion++)
1641	{
1642	uint32_t u32Address = ich9pciGetRegionReg(iRegion);
1643
1644	/* Calculate size. */
1645	uint8_t u8ResourceType = ich9pciConfigRead(pGlobals, uBus, uDevFn, u32Address, 1);
1646	ich9pciConfigWrite(pGlobals, uBus, uDevFn, u32Address, UINT32_C(0xffffffff), 4);
1647	uint32_t u32Size = ich9pciConfigRead(pGlobals, uBus, uDevFn, u32Address, 4);
1648	/* Clear resource information depending on resource type. */
1649	if ((u8ResourceType & PCI_COMMAND_IOACCESS) == PCI_COMMAND_IOACCESS) /* I/O */
1650	u32Size &= ~(0x01);
1651	else /* MMIO */
1652	u32Size &= ~(0x0f);
1653
1654	bool fIsPio = ((u8ResourceType & PCI_COMMAND_IOACCESS) == PCI_COMMAND_IOACCESS);
1655	/*
1656	* Invert all bits and add 1 to get size of the region.
1657	* (From PCI implementation note)
1658	*/
1659	if (fIsPio && (u32Size & UINT32_C(0xffff0000)) == 0)
1660	u32Size = (~(u32Size \| UINT32_C(0xffff0000))) + 1;
1661	else
1662	u32Size = (~u32Size) + 1;
1663
1664	Log(("%s: Size of region %u for device %d on bus %d is %u\n", __FUNCTION__, iRegion, uDevFn, uBus, u32Size));
1665
1666	if (u32Size)
1667	{
1668	paddr = fIsPio ? &pGlobals->uPciBiosIo : &pGlobals->uPciBiosMmio;
1669	paddr = (paddr + u32Size - 1) & ~(u32Size - 1);
1670	Log(("%s: Start address of %s region %u is %#x\n", __FUNCTION__, (fIsPio ? "I/O" : "MMIO"), iRegion, *paddr));
1671	ich9pciSetRegionAddress(pGlobals, uBus, uDevFn, iRegion, *paddr);
1672	*paddr += u32Size;
1673	Log(("%s: New address is %#x\n", __FUNCTION__, *paddr));
1674	}
1675	}
1676	break;
1677	}
1678	}
1679
1680	/* map the interrupt */
1681	uint32_t uPin = ich9pciConfigRead(pGlobals, uBus, uDevFn, VBOX_PCI_INTERRUPT_PIN, 1);
1682	if (uPin != 0)
1683	{
1684	uint8_t uBridgeDevFn = uDevFn;
1685	uPin--;
1686
1687	/* We need to go up to the host bus to see which irq this device will assert there. */
1688	while (cBridgeDepth != 0)
1689	{
1690	/* Get the pin the device would assert on the bridge. */
1691	uPin = ((uBridgeDevFn >> 3) + uPin) & 3;
1692	uBridgeDevFn = paBridgePositions[cBridgeDepth];
1693	cBridgeDepth--;
1694	}
1695	}
1696	}
1697
1698	static const uint8_t auPciIrqs[4] = { 11, 9, 11, 9 };
1699
1700	static DECLCALLBACK(int) ich9pciFakePCIBIOS(PPDMDEVINS pDevIns)
1701	{
1702	unsigned i;
1703	uint8_t elcr[2] = {0, 0};
1704	PPCIGLOBALS pGlobals = PDMINS_2_DATA(pDevIns, PPCIGLOBALS);
1705	PVM pVM = PDMDevHlpGetVM(pDevIns);
1706	Assert(pVM);
1707
1708	/*
1709	* Set the start addresses.
1710	*/
1711	pGlobals->uPciBiosIo = 0xd000;
1712	pGlobals->uPciBiosMmio = UINT32_C(0xf0000000);
1713	pGlobals->uBus = 0;
1714
1715	/*
1716	* Activate IRQ mappings.
1717	*/
1718	for (i = 0; i < 4; i++)
1719	{
1720	uint8_t irq = auPciIrqs[i];
1721	/* Set to trigger level. */
1722	elcr[irq >> 3] \|= (1 << (irq & 7));
1723	}
1724
1725	/* Tell to the PIC. */
1726	VBOXSTRICTRC rcStrict = IOMIOPortWrite(pVM, 0x4d0, elcr[0], sizeof(uint8_t));
1727	if (rcStrict == VINF_SUCCESS)
1728	rcStrict = IOMIOPortWrite(pVM, 0x4d1, elcr[1], sizeof(uint8_t));
1729	if (rcStrict != VINF_SUCCESS)
1730	{
1731	AssertMsgFailed(("Writing to PIC failed! rcStrict=%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
1732	return RT_SUCCESS(rcStrict) ? VERR_INTERNAL_ERROR : VBOXSTRICTRC_VAL(rcStrict);
1733	}
1734
1735	/*
1736	* Init the devices.
1737	*/
1738	for (i = 0; i < 256; i++)
1739	{
1740	uint8_t aBridgePositions[256];
1741
1742	memset(aBridgePositions, 0, sizeof(aBridgePositions));
1743	Log2(("PCI: Initializing device %d (%#x)\n",
1744	i, 0x80000000 \| (i << 8)));
1745	ich9pciBiosInitDevice(pGlobals, 0, i, 0, aBridgePositions);
1746	}
1747
1748	return VINF_SUCCESS;
1749	}
1750
1751	static DECLCALLBACK(uint32_t) ich9pciConfigReadDev(PCIDevice *aDev, uint32_t u32Address, unsigned len)
1752	{
1753	if ((u32Address + len) > 256 && (u32Address + len) < 4096)
1754	{
1755	AssertMsgReturn(false, ("Read from extended registers falled back to generic code\n"), 0);
1756	}
1757
1758	if ( PCIIsMsiCapable(aDev)
1759	&& (u32Address >= aDev->Int.s.u8MsiCapOffset)
1760	&& (u32Address < aDev->Int.s.u8MsiCapOffset + aDev->Int.s.u8MsiCapSize)
1761	)
1762	{
1763	return MsiPciConfigRead(aDev->Int.s.CTX_SUFF(pBus)->CTX_SUFF(pDevIns), aDev, u32Address, len);
1764	}
1765
1766	if ( PCIIsMsixCapable(aDev)
1767	&& (u32Address >= aDev->Int.s.u8MsixCapOffset)
1768	&& (u32Address < aDev->Int.s.u8MsixCapOffset + aDev->Int.s.u8MsixCapSize)
1769	)
1770	{
1771	return MsixPciConfigRead(aDev->Int.s.CTX_SUFF(pBus)->CTX_SUFF(pDevIns), aDev, u32Address, len);
1772	}
1773
1774	AssertMsgReturn(u32Address + len <= 256, ("Read after end of PCI config space\n"),
1775	0);
1776	switch (len)
1777	{
1778	case 1:
1779	return PCIDevGetByte(aDev, u32Address);
1780	case 2:
1781	return PCIDevGetWord(aDev, u32Address);
1782	case 4:
1783	return PCIDevGetDWord(aDev, u32Address);
1784	default:
1785	Assert(false);
1786	return 0;
1787	}
1788	}
1789
1790
1791	/**
1792	* See paragraph 7.5 of PCI Express specification (p. 349) for definition of
1793	* registers and their writability policy.
1794	*/
1795	static DECLCALLBACK(void) ich9pciConfigWriteDev(PCIDevice *aDev, uint32_t u32Address,
1796	uint32_t val, unsigned len)
1797	{
1798	Assert(len <= 4);
1799
1800	if ((u32Address + len) > 256 && (u32Address + len) < 4096)
1801	{
1802	AssertMsgReturnVoid(false, ("Write to extended registers falled back to generic code\n"));
1803	}
1804
1805	AssertMsgReturnVoid(u32Address + len <= 256, ("Write after end of PCI config space\n"));
1806
1807	if ( PCIIsMsiCapable(aDev)
1808	&& (u32Address >= aDev->Int.s.u8MsiCapOffset)
1809	&& (u32Address < aDev->Int.s.u8MsiCapOffset + aDev->Int.s.u8MsiCapSize)
1810	)
1811	{
1812	MsiPciConfigWrite(aDev->Int.s.CTX_SUFF(pBus)->CTX_SUFF(pDevIns),
1813	aDev->Int.s.CTX_SUFF(pBus)->CTX_SUFF(pPciHlp),
1814	aDev, u32Address, val, len);
1815	return;
1816	}
1817
1818	if ( PCIIsMsixCapable(aDev)
1819	&& (u32Address >= aDev->Int.s.u8MsixCapOffset)
1820	&& (u32Address < aDev->Int.s.u8MsixCapOffset + aDev->Int.s.u8MsixCapSize)
1821	)
1822	{
1823	MsixPciConfigWrite(aDev->Int.s.CTX_SUFF(pBus)->CTX_SUFF(pDevIns),
1824	aDev->Int.s.CTX_SUFF(pBus)->CTX_SUFF(pPciHlp),
1825	aDev, u32Address, val, len);
1826	return;
1827	}
1828
1829
1830	/* Fast case - update one of BARs or ROM address, 'while' only for 'break' */
1831	while ( len == 4
1832	&& ( ( u32Address >= VBOX_PCI_BASE_ADDRESS_0
1833	&& u32Address < VBOX_PCI_BASE_ADDRESS_0 + 6 * 4)
1834	\|\| ( u32Address >= VBOX_PCI_ROM_ADDRESS
1835	&& u32Address < VBOX_PCI_ROM_ADDRESS+4)
1836	)
1837	)
1838	{
1839	PCIIORegion *pRegion;
1840	int reg, regionSize;
1841
1842	reg = (u32Address >= VBOX_PCI_ROM_ADDRESS) ? PCI_ROM_SLOT : (u32Address - VBOX_PCI_BASE_ADDRESS_0) >> 2;
1843	pRegion = &aDev->Int.s.aIORegions[reg];
1844	regionSize = pRegion->size;
1845	if (regionSize == 0)
1846	break;
1847	/* compute the stored value */
1848	if (reg == PCI_ROM_SLOT) {
1849	/* keep ROM enable bit */
1850	val &= (~(regionSize - 1)) \| 1;
1851	} else {
1852	val &= ~(regionSize - 1);
1853	val \|= pRegion->type;
1854	}
1855	PCIDevSetDWord(aDev, u32Address, val);
1856	ich9pciUpdateMappings(aDev);
1857	return;
1858	}
1859
1860	uint32_t addr = u32Address;
1861	bool fUpdateMappings = false;
1862	for (uint32_t i = 0; i < len; i++)
1863	{
1864	bool fWritable = false;
1865	switch (PCIDevGetHeaderType(aDev))
1866	{
1867	case 0x00: /* normal device */
1868	case 0x80: /* multi-function device */
1869	switch (addr)
1870	{
1871	/* Read-only registers */
1872	case VBOX_PCI_VENDOR_ID: case VBOX_PCI_VENDOR_ID+1:
1873	case VBOX_PCI_DEVICE_ID: case VBOX_PCI_DEVICE_ID+1:
1874	case VBOX_PCI_REVISION_ID:
1875	case VBOX_PCI_CLASS_PROG:
1876	case VBOX_PCI_CLASS_SUB:
1877	case VBOX_PCI_CLASS_BASE:
1878	case VBOX_PCI_HEADER_TYPE:
1879	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:
1880	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:
1881	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:
1882	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:
1883	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:
1884	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:
1885	case VBOX_PCI_SUBSYSTEM_VENDOR_ID: case VBOX_PCI_SUBSYSTEM_VENDOR_ID+1:
1886	case VBOX_PCI_SUBSYSTEM_ID: case VBOX_PCI_SUBSYSTEM_ID+1:
1887	case VBOX_PCI_ROM_ADDRESS: case VBOX_PCI_ROM_ADDRESS+1: case VBOX_PCI_ROM_ADDRESS+2: case VBOX_PCI_ROM_ADDRESS+3:
1888	case VBOX_PCI_CAPABILITY_LIST:
1889	case VBOX_PCI_INTERRUPT_PIN:
1890	fWritable = false;
1891	break;
1892	/* Others can be written */
1893	default:
1894	fWritable = true;
1895	break;
1896	}
1897	break;
1898	default:
1899	case 0x01: /* PCI-PCI bridge */
1900	switch (addr)
1901	{
1902	/* Read-only registers */
1903	case VBOX_PCI_VENDOR_ID: case VBOX_PCI_VENDOR_ID+1:
1904	case VBOX_PCI_DEVICE_ID: case VBOX_PCI_DEVICE_ID+1:
1905	case VBOX_PCI_REVISION_ID:
1906	case VBOX_PCI_CLASS_PROG:
1907	case VBOX_PCI_CLASS_SUB:
1908	case VBOX_PCI_CLASS_BASE:
1909	case VBOX_PCI_HEADER_TYPE:
1910	case VBOX_PCI_ROM_ADDRESS_BR: case VBOX_PCI_ROM_ADDRESS_BR+1: case VBOX_PCI_ROM_ADDRESS_BR+2: case VBOX_PCI_ROM_ADDRESS_BR+3:
1911	case VBOX_PCI_INTERRUPT_PIN:
1912	fWritable = false;
1913	break;
1914	default:
1915	fWritable = true;
1916	break;
1917	}
1918	break;
1919	}
1920
1921	uint8_t u8Val = (uint8_t)val;
1922
1923	switch (addr)
1924	{
1925	case VBOX_PCI_COMMAND: /* Command register, bits 0-7. */
1926	fUpdateMappings = true;
1927	PCIDevSetByte(aDev, addr, u8Val);
1928	break;
1929	case VBOX_PCI_COMMAND+1: /* Command register, bits 8-15. */
1930	/* don't change reserved bits (11-15) */
1931	u8Val &= UINT32_C(~0xf8);
1932	fUpdateMappings = true;
1933	PCIDevSetByte(aDev, addr, u8Val);
1934	break;
1935	case VBOX_PCI_STATUS: /* Status register, bits 0-7. */
1936	/* don't change read-only bits => actually all lower bits are read-only */
1937	u8Val &= UINT32_C(~0xff);
1938	/* status register, low part: clear bits by writing a '1' to the corresponding bit */
1939	aDev->config[addr] &= ~u8Val;
1940	break;
1941	case VBOX_PCI_STATUS+1: /* Status register, bits 8-15. */
1942	/* don't change read-only bits */
1943	u8Val &= UINT32_C(~0x06);
1944	/* status register, high part: clear bits by writing a '1' to the corresponding bit */
1945	aDev->config[addr] &= ~u8Val;
1946	break;
1947	default:
1948	if (fWritable)
1949	PCIDevSetByte(aDev, addr, u8Val);
1950	}
1951	addr++;
1952	val >>= 8;
1953	}
1954
1955	if (fUpdateMappings)
1956	/* if the command register is modified, we must modify the mappings */
1957	ich9pciUpdateMappings(aDev);
1958	}
1959
1960	/* Slot/functions assignment per table at p. 12 of ICH9 family spec update */
1961	static const struct {
1962	const char* pszName;
1963	int32_t iSlot;
1964	int32_t iFunction;
1965	} PciSlotAssignments[] = {
1966	/* The only override that have to be here, as host controller is added in the way invisible to bus slot assignment management,
1967	maybe to be changed in the future. */
1968	{
1969	"i82801", 30, 0 /* Host Controller */
1970	},
1971	};
1972
1973	static bool assignPosition(PPCIBUS pBus, PPCIDEVICE pPciDev, const char pszName, int iDevFn, PciAddress aPosition)
1974	{
1975	aPosition->iBus = 0;
1976	aPosition->iDeviceFunc = iDevFn;
1977	aPosition->iRegister = 0; /* N/A */
1978
1979	/* Hardcoded slots/functions, per chipset spec */
1980	for (size_t i = 0; i < RT_ELEMENTS(PciSlotAssignments); i++)
1981	{
1982	if (!strcmp(pszName, PciSlotAssignments[i].pszName))
1983	{
1984	PCISetRequestedDevfunc(pPciDev);
1985	aPosition->iDeviceFunc =
1986	(PciSlotAssignments[i].iSlot << 3) + PciSlotAssignments[i].iFunction;
1987	return true;
1988	}
1989	}
1990
1991	/* Explicit slot request */
1992	if (iDevFn >=0 && iDevFn < (int)RT_ELEMENTS(pBus->apDevices))
1993	return true;
1994
1995	int iStartPos = 0;
1996
1997	/* Otherwise when assigning a slot, we need to make sure all its functions are available */
1998	for (int iPos = iStartPos; iPos < (int)RT_ELEMENTS(pBus->apDevices); iPos += 8)
1999	{
2000	if ( !pBus->apDevices[iPos]
2001	&& !pBus->apDevices[iPos + 1]
2002	&& !pBus->apDevices[iPos + 2]
2003	&& !pBus->apDevices[iPos + 3]
2004	&& !pBus->apDevices[iPos + 4]
2005	&& !pBus->apDevices[iPos + 5]
2006	&& !pBus->apDevices[iPos + 6]
2007	&& !pBus->apDevices[iPos + 7])
2008	{
2009	PCIClearRequestedDevfunc(pPciDev);
2010	aPosition->iDeviceFunc = iPos;
2011	return true;
2012	}
2013	}
2014
2015	return false;
2016	}
2017
2018	static bool hasHardAssignedDevsInSlot(PPCIBUS pBus, int iSlot)
2019	{
2020	PCIDevice** aSlot = &pBus->apDevices[iSlot << 3];
2021
2022	return (aSlot[0] && PCIIsRequestedDevfunc(aSlot[0]))
2023	\|\| (aSlot[1] && PCIIsRequestedDevfunc(aSlot[1]))
2024	\|\| (aSlot[2] && PCIIsRequestedDevfunc(aSlot[2]))
2025	\|\| (aSlot[3] && PCIIsRequestedDevfunc(aSlot[3]))
2026	\|\| (aSlot[4] && PCIIsRequestedDevfunc(aSlot[4]))
2027	\|\| (aSlot[5] && PCIIsRequestedDevfunc(aSlot[5]))
2028	\|\| (aSlot[6] && PCIIsRequestedDevfunc(aSlot[6]))
2029	\|\| (aSlot[7] && PCIIsRequestedDevfunc(aSlot[7]))
2030	;
2031	}
2032
2033	static int ich9pciRegisterInternal(PPCIBUS pBus, int iDev, PPCIDEVICE pPciDev, const char *pszName)
2034	{
2035	PciAddress aPosition = {0, 0, 0};
2036
2037	/*
2038	* Find device position
2039	*/
2040	if (!assignPosition(pBus, pPciDev, pszName, iDev, &aPosition))
2041	{
2042	AssertMsgFailed(("Couldn't asssign position!\n"));
2043	return VERR_PDM_TOO_PCI_MANY_DEVICES;
2044	}
2045
2046	AssertMsgReturn(aPosition.iBus == 0,
2047	("Assigning behind the bridge not implemented yet\n"),
2048	VERR_PDM_TOO_PCI_MANY_DEVICES);
2049
2050
2051	iDev = aPosition.iDeviceFunc;
2052	/*
2053	* Check if we can really take this slot, possibly by relocating
2054	* its current habitant, if it wasn't hard assigned too.
2055	*/
2056	if (PCIIsRequestedDevfunc(pPciDev) &&
2057	pBus->apDevices[iDev] &&
2058	PCIIsRequestedDevfunc(pBus->apDevices[iDev]))
2059	{
2060	AssertReleaseMsgFailed(("Configuration error:'%s' and '%s' are both configured as device %d\n",
2061	pszName, pBus->apDevices[iDev]->name, iDev));
2062	return VERR_INTERNAL_ERROR;
2063	}
2064
2065	if (pBus->apDevices[iDev])
2066	{
2067	/* if we got here, we shall (and usually can) relocate the device */
2068	bool assigned = assignPosition(pBus, pBus->apDevices[iDev], pBus->apDevices[iDev]->name, -1, &aPosition);
2069	AssertMsgReturn(aPosition.iBus == 0,
2070	("Assigning behind the bridge not implemented yet\n"),
2071	VERR_PDM_TOO_PCI_MANY_DEVICES);
2072	int iRelDev = aPosition.iDeviceFunc;
2073	if (!assigned \|\| iRelDev == iDev)
2074	{
2075	AssertMsgFailed(("Couldn't find free spot!\n"));
2076	return VERR_PDM_TOO_PCI_MANY_DEVICES;
2077	}
2078	/* Copy device function by function to its new position */
2079	for (int i = 0; i < 8; i++)
2080	{
2081	if (!pBus->apDevices[iDev + i])
2082	continue;
2083	Log(("PCI: relocating '%s' from slot %#x to %#x\n", pBus->apDevices[iDev + i]->name, iDev + i, iRelDev + i));
2084	pBus->apDevices[iRelDev + i] = pBus->apDevices[iDev + i];
2085	pBus->apDevices[iRelDev + i]->devfn = iRelDev + i;
2086	pBus->apDevices[iDev + i] = NULL;
2087	}
2088	}
2089
2090	/*
2091	* Fill in device information.
2092	*/
2093	pPciDev->devfn = iDev;
2094	pPciDev->name = pszName;
2095	pPciDev->Int.s.pBusR3 = pBus;
2096	pPciDev->Int.s.pBusR0 = MMHyperR3ToR0(PDMDevHlpGetVM(pBus->CTX_SUFF(pDevIns)), pBus);
2097	pPciDev->Int.s.pBusRC = MMHyperR3ToRC(PDMDevHlpGetVM(pBus->CTX_SUFF(pDevIns)), pBus);
2098	pPciDev->Int.s.pfnConfigRead = ich9pciConfigReadDev;
2099	pPciDev->Int.s.pfnConfigWrite = ich9pciConfigWriteDev;
2100	pBus->apDevices[iDev] = pPciDev;
2101	if (PCIIsPci2PciBridge(pPciDev))
2102	{
2103	AssertMsg(pBus->cBridges < RT_ELEMENTS(pBus->apDevices), ("Number of bridges exceeds the number of possible devices on the bus\n"));
2104	AssertMsg(pPciDev->Int.s.pfnBridgeConfigRead && pPciDev->Int.s.pfnBridgeConfigWrite,
2105	("device is a bridge but does not implement read/write functions\n"));
2106	pBus->papBridgesR3[pBus->cBridges] = pPciDev;
2107	pBus->cBridges++;
2108	}
2109
2110	Log(("PCI: Registered device %d function %d (%#x) '%s'.\n",
2111	iDev >> 3, iDev & 7, 0x80000000 \| (iDev << 8), pszName));
2112
2113	return VINF_SUCCESS;
2114	}
2115
2116	static void printIndent(PCDBGFINFOHLP pHlp, int iIndent)
2117	{
2118	for (int i = 0; i < iIndent; i++)
2119	{
2120	pHlp->pfnPrintf(pHlp, " ");
2121	}
2122	}
2123
2124	static void ich9pciBusInfo(PPCIBUS pBus, PCDBGFINFOHLP pHlp, int iIndent)
2125	{
2126	for (uint32_t iDev = 0; iDev < RT_ELEMENTS(pBus->apDevices); iDev++)
2127	{
2128	PPCIDEVICE pPciDev = pBus->apDevices[iDev];
2129	if (pPciDev != NULL)
2130	{
2131	printIndent(pHlp, iIndent);
2132	pHlp->pfnPrintf(pHlp, "%02x:%02x:%02x %s: %04x-%04x%s%s\n",
2133	pBus->iBus, (iDev >> 3) & 0xff, iDev & 0x7,
2134	pPciDev->name,
2135	PCIDevGetVendorId(pPciDev), PCIDevGetDeviceId(pPciDev),
2136	PCIIsMsiCapable(pPciDev) ? " MSI" : "",
2137	PCIIsMsixCapable(pPciDev) ? " MSI-X" : ""
2138	);
2139	}
2140	}
2141
2142	if (pBus->cBridges > 0)
2143	{
2144	printIndent(pHlp, iIndent);
2145	pHlp->pfnPrintf(pHlp, "Registered %d bridges, subordinate buses info follows\n", pBus->cBridges);
2146	for (uint32_t iBridge = 0; iBridge < pBus->cBridges; iBridge++)
2147	{
2148	PPCIBUS pBusSub = PDMINS_2_DATA(pBus->papBridgesR3[iBridge]->pDevIns, PPCIBUS);
2149	ich9pciBusInfo(pBusSub, pHlp, iIndent + 1);
2150	}
2151	}
2152	}
2153
2154	/**
2155	* Info handler, device version.
2156	*
2157	* @param pDevIns Device instance which registered the info.
2158	* @param pHlp Callback functions for doing output.
2159	* @param pszArgs Argument string. Optional and specific to the handler.
2160	*/
2161	static DECLCALLBACK(void) ich9pciInfo(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs)
2162	{
2163	PPCIBUS pBus = DEVINS_2_PCIBUS(pDevIns);
2164
2165	ich9pciBusInfo(pBus, pHlp, 0);
2166	}
2167
2168
2169	static DECLCALLBACK(int) ich9pciConstruct(PPDMDEVINS pDevIns,
2170	int iInstance,
2171	PCFGMNODE pCfg)
2172	{
2173	int rc;
2174	Assert(iInstance == 0);
2175
2176	/*
2177	* Validate and read configuration.
2178	*/
2179	if (!CFGMR3AreValuesValid(pCfg,
2180	"IOAPIC\0"
2181	"GCEnabled\0"
2182	"R0Enabled\0"
2183	"McfgBase\0"
2184	"McfgLength\0"
2185	))
2186	return VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
2187
2188	/* query whether we got an IOAPIC */
2189	bool fUseIoApic;
2190	rc = CFGMR3QueryBoolDef(pCfg, "IOAPIC", &fUseIoApic, false);
2191	if (RT_FAILURE(rc))
2192	return PDMDEV_SET_ERROR(pDevIns, rc,
2193	N_("Configuration error: Failed to query boolean value \"IOAPIC\""));
2194
2195	/* check if RC code is enabled. */
2196	bool fGCEnabled;
2197	rc = CFGMR3QueryBoolDef(pCfg, "GCEnabled", &fGCEnabled, true);
2198	if (RT_FAILURE(rc))
2199	return PDMDEV_SET_ERROR(pDevIns, rc,
2200	N_("Configuration error: Failed to query boolean value \"GCEnabled\""));
2201
2202	/* check if R0 code is enabled. */
2203	bool fR0Enabled;
2204	rc = CFGMR3QueryBoolDef(pCfg, "R0Enabled", &fR0Enabled, true);
2205	if (RT_FAILURE(rc))
2206	return PDMDEV_SET_ERROR(pDevIns, rc,
2207	N_("Configuration error: Failed to query boolean value \"R0Enabled\""));
2208
2209	Log(("PCI: fUseIoApic=%RTbool fGCEnabled=%RTbool fR0Enabled=%RTbool\n", fUseIoApic, fGCEnabled, fR0Enabled));
2210
2211	/*
2212	* Init data.
2213	*/
2214	PPCIGLOBALS pGlobals = PDMINS_2_DATA(pDevIns, PPCIGLOBALS);
2215	PPCIBUS pBus = &pGlobals->aPciBus;
2216	/* Zero out everything */
2217	memset(pGlobals, 0, sizeof(*pGlobals));
2218	/* And fill values */
2219	if (!fUseIoApic)
2220	return PDMDEV_SET_ERROR(pDevIns, rc,
2221	N_("Must use IO-APIC with ICH9 chipset"));
2222	rc = CFGMR3QueryU64Def(pCfg, "McfgBase", &pGlobals->u64PciConfigMMioAddress, 0);
2223	if (RT_FAILURE(rc))
2224	return PDMDEV_SET_ERROR(pDevIns, rc,
2225	N_("Configuration error: Failed to read \"McfgBase\""));
2226	rc = CFGMR3QueryU64Def(pCfg, "McfgLength", &pGlobals->u64PciConfigMMioLength, 0);
2227	if (RT_FAILURE(rc))
2228	return PDMDEV_SET_ERROR(pDevIns, rc,
2229	N_("Configuration error: Failed to read \"McfgLength\""));
2230
2231	pGlobals->pDevInsR3 = pDevIns;
2232	pGlobals->pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
2233	pGlobals->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
2234
2235	pGlobals->aPciBus.pDevInsR3 = pDevIns;
2236	pGlobals->aPciBus.pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
2237	pGlobals->aPciBus.pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
2238	pGlobals->aPciBus.papBridgesR3 = (PPCIDEVICE )PDMDevHlpMMHeapAllocZ(pDevIns, sizeof(PPCIDEVICE) RT_ELEMENTS(pGlobals->aPciBus.apDevices));
2239
2240	/*
2241	* Register bus
2242	*/
2243	PDMPCIBUSREG PciBusReg;
2244	PciBusReg.u32Version = PDM_PCIBUSREG_VERSION;
2245	PciBusReg.pfnRegisterR3 = ich9pciRegister;
2246	PciBusReg.pfnRegisterMsiR3 = ich9pciRegisterMsi;
2247	PciBusReg.pfnIORegionRegisterR3 = ich9pciIORegionRegister;
2248	PciBusReg.pfnSetConfigCallbacksR3 = ich9pciSetConfigCallbacks;
2249	PciBusReg.pfnSetIrqR3 = ich9pciSetIrq;
2250	PciBusReg.pfnSaveExecR3 = ich9pciGenericSaveExec;
2251	PciBusReg.pfnLoadExecR3 = ich9pciGenericLoadExec;
2252	PciBusReg.pfnFakePCIBIOSR3 = ich9pciFakePCIBIOS;
2253	PciBusReg.pszSetIrqRC = fGCEnabled ? "ich9pciSetIrq" : NULL;
2254	PciBusReg.pszSetIrqR0 = fR0Enabled ? "ich9pciSetIrq" : NULL;
2255	rc = PDMDevHlpPCIBusRegister(pDevIns, &PciBusReg, &pBus->pPciHlpR3);
2256	if (RT_FAILURE(rc))
2257	return PDMDEV_SET_ERROR(pDevIns, rc,
2258	N_("Failed to register ourselves as a PCI Bus"));
2259	if (pBus->pPciHlpR3->u32Version != PDM_PCIHLPR3_VERSION)
2260	return PDMDevHlpVMSetError(pDevIns, VERR_VERSION_MISMATCH, RT_SRC_POS,
2261	N_("PCI helper version mismatch; got %#x expected %#x"),
2262	pBus->pPciHlpR3->u32Version, PDM_PCIHLPR3_VERSION);
2263
2264	pBus->pPciHlpRC = pBus->pPciHlpR3->pfnGetRCHelpers(pDevIns);
2265	pBus->pPciHlpR0 = pBus->pPciHlpR3->pfnGetR0Helpers(pDevIns);
2266
2267	/*
2268	* Fill in PCI configs and add them to the bus.
2269	*/
2270
2271	/**
2272	* We emulate 82801IB ICH9 IO chip used in Q35,
2273	* see http://ark.intel.com/Product.aspx?id=31892
2274	*
2275	* Stepping S-Spec Top Marking
2276	*
2277	* A2 SLA9M NH82801IB
2278	*/
2279	PCIDevSetVendorId( &pBus->aPciDev, 0x8086); /* Intel */
2280	PCIDevSetDeviceId( &pBus->aPciDev, 0x244e); /* Desktop */
2281	PCIDevSetRevisionId(&pBus->aPciDev, 0x92); /* rev. A2 */
2282	PCIDevSetClassSub( &pBus->aPciDev, 0x00); /* Host/PCI bridge */
2283	PCIDevSetClassBase( &pBus->aPciDev, 0x06); /* bridge */
2284	PCIDevSetHeaderType(&pBus->aPciDev, 0x00); /* normal device */
2285
2286	pBus->aPciDev.pDevIns = pDevIns;
2287	/* We register Host<->PCI controller on the bus */
2288	ich9pciRegisterInternal(pBus, -1, &pBus->aPciDev, "i82801");
2289
2290	/*
2291	* Register I/O ports and save state.
2292	*/
2293	rc = PDMDevHlpIOPortRegister(pDevIns, 0x0cf8, 1, NULL, ich9pciIOPortAddressWrite, ich9pciIOPortAddressRead, NULL, NULL, "ICH9 (PCI)");
2294	if (RT_FAILURE(rc))
2295	return rc;
2296	rc = PDMDevHlpIOPortRegister(pDevIns, 0x0cfc, 4, NULL, ich9pciIOPortDataWrite, ich9pciIOPortDataRead, NULL, NULL, "ICH9 (PCI)");
2297	if (RT_FAILURE(rc))
2298	return rc;
2299	if (fGCEnabled)
2300	{
2301	rc = PDMDevHlpIOPortRegisterRC(pDevIns, 0x0cf8, 1, NIL_RTGCPTR, "ich9pciIOPortAddressWrite", "ich9pciIOPortAddressRead", NULL, NULL, "ICH9 (PCI)");
2302	if (RT_FAILURE(rc))
2303	return rc;
2304	rc = PDMDevHlpIOPortRegisterRC(pDevIns, 0x0cfc, 4, NIL_RTGCPTR, "ich9pciIOPortDataWrite", "ich9pciIOPortDataRead", NULL, NULL, "ICH9 (PCI)");
2305	if (RT_FAILURE(rc))
2306	return rc;
2307	}
2308	if (fR0Enabled)
2309	{
2310	rc = PDMDevHlpIOPortRegisterR0(pDevIns, 0x0cf8, 1, NIL_RTR0PTR, "ich9pciIOPortAddressWrite", "ich9pciIOPortAddressRead", NULL, NULL, "ICH9 (PCI)");
2311	if (RT_FAILURE(rc))
2312	return rc;
2313	rc = PDMDevHlpIOPortRegisterR0(pDevIns, 0x0cfc, 4, NIL_RTR0PTR, "ich9pciIOPortDataWrite", "ich9pciIOPortDataRead", NULL, NULL, "ICH9 (PCI)");
2314	if (RT_FAILURE(rc))
2315	return rc;
2316	}
2317
2318	if (pGlobals->u64PciConfigMMioAddress != 0)
2319	{
2320	rc = PDMDevHlpMMIORegister(pDevIns,
2321	pGlobals->u64PciConfigMMioAddress,
2322	pGlobals->u64PciConfigMMioLength,
2323	0,
2324	ich9pciMcfgMMIOWrite,
2325	ich9pciMcfgMMIORead,
2326	NULL /* fill */,
2327	"MCFG ranges");
2328	if (RT_FAILURE(rc))
2329	{
2330	AssertMsgRC(rc, ("Cannot register MCFG MMIO: %Rrc\n", rc));
2331	return rc;
2332	}
2333
2334	if (fGCEnabled)
2335	{
2336
2337	rc = PDMDevHlpMMIORegisterRC(pDevIns,
2338	pGlobals->u64PciConfigMMioAddress,
2339	pGlobals->u64PciConfigMMioLength,
2340	0,
2341	"ich9pciMcfgMMIOWrite",
2342	"ich9pciMcfgMMIORead",
2343	NULL /* fill */);
2344	if (RT_FAILURE(rc))
2345	{
2346	AssertMsgRC(rc, ("Cannot register MCFG MMIO (GC): %Rrc\n", rc));
2347	return rc;
2348	}
2349	}
2350
2351
2352	if (fR0Enabled)
2353	{
2354
2355	rc = PDMDevHlpMMIORegisterR0(pDevIns,
2356	pGlobals->u64PciConfigMMioAddress,
2357	pGlobals->u64PciConfigMMioLength,
2358	0,
2359	"ich9pciMcfgMMIOWrite",
2360	"ich9pciMcfgMMIORead",
2361	NULL /* fill */);
2362	if (RT_FAILURE(rc))
2363	{
2364	AssertMsgRC(rc, ("Cannot register MCFG MMIO (R0): %Rrc\n", rc));
2365	return rc;
2366	}
2367	}
2368	}
2369
2370	rc = PDMDevHlpSSMRegisterEx(pDevIns, VBOX_ICH9PCI_SAVED_STATE_VERSION_CURRENT,
2371	sizeof(pBus) + 16128, "pgm",
2372	NULL, NULL, NULL,
2373	NULL, ich9pciR3SaveExec, NULL,
2374	NULL, ich9pciR3LoadExec, NULL);
2375	if (RT_FAILURE(rc))
2376	return rc;
2377
2378
2379	/** @todo: other chipset devices shall be registered too */
2380	/** @todo: what to with bridges? */
2381
2382	PDMDevHlpDBGFInfoRegister(pDevIns, "pci", "Display PCI bus status. (no arguments)", ich9pciInfo);
2383
2384	return VINF_SUCCESS;
2385	}
2386
2387	static void ich9pciResetDevice(PPCIDEVICE pDev)
2388	{
2389	pDev->config[VBOX_PCI_COMMAND] &= ~(VBOX_PCI_COMMAND_IO \| VBOX_PCI_COMMAND_MEMORY \|
2390	VBOX_PCI_COMMAND_MASTER);
2391
2392	if (!PCIIsPci2PciBridge(pDev))
2393	{
2394	PCIDevSetByte(pDev, VBOX_PCI_CACHE_LINE_SIZE, 0x0);
2395	PCIDevSetByte(pDev, VBOX_PCI_INTERRUPT_LINE, 0x0);
2396	}
2397	/* Regions ? */
2398	}
2399
2400
2401	/**
2402	* @copydoc FNPDMDEVRESET
2403	*/
2404	static DECLCALLBACK(void) ich9pciReset(PPDMDEVINS pDevIns)
2405	{
2406	PPCIGLOBALS pGlobals = PDMINS_2_DATA(pDevIns, PPCIGLOBALS);
2407	PPCIBUS pBus = &pGlobals->aPciBus;
2408
2409	/* Relocate RC pointers for the attached pci devices. */
2410	for (uint32_t i = 0; i < RT_ELEMENTS(pBus->apDevices); i++)
2411	{
2412	if (pBus->apDevices[i])
2413	ich9pciResetDevice(pBus->apDevices[i]);
2414	}
2415	}
2416
2417	/**
2418	* @copydoc FNPDMDEVRELOCATE
2419	*/
2420	static DECLCALLBACK(void) ich9pciRelocate(PPDMDEVINS pDevIns, RTGCINTPTR offDelta)
2421	{
2422	PPCIGLOBALS pGlobals = PDMINS_2_DATA(pDevIns, PPCIGLOBALS);
2423	PPCIBUS pBus = &pGlobals->aPciBus;
2424	pGlobals->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
2425
2426	pBus->pPciHlpRC = pBus->pPciHlpR3->pfnGetRCHelpers(pDevIns);
2427	pBus->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
2428
2429	/* Relocate RC pointers for the attached pci devices. */
2430	for (uint32_t i = 0; i < RT_ELEMENTS(pBus->apDevices); i++)
2431	{
2432	if (pBus->apDevices[i])
2433	{
2434	pBus->apDevices[i]->Int.s.pBusRC += offDelta;
2435	if (pBus->apDevices[i]->Int.s.pMsixPageRC)
2436	pBus->apDevices[i]->Int.s.pMsixPageRC += offDelta;
2437	}
2438	}
2439
2440	}
2441
2442	/**
2443	* @interface_method_impl{PDMDEVREG,pfnConstruct}
2444	*/
2445	static DECLCALLBACK(int) ich9pcibridgeConstruct(PPDMDEVINS pDevIns,
2446	int iInstance,
2447	PCFGMNODE pCfg)
2448	{
2449	int rc;
2450
2451	/*
2452	* Validate and read configuration.
2453	*/
2454	if (!CFGMR3AreValuesValid(pCfg, "GCEnabled\0" "R0Enabled\0"))
2455	return VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
2456
2457	/* check if RC code is enabled. */
2458	bool fGCEnabled;
2459	rc = CFGMR3QueryBoolDef(pCfg, "GCEnabled", &fGCEnabled, true);
2460	if (RT_FAILURE(rc))
2461	return PDMDEV_SET_ERROR(pDevIns, rc,
2462	N_("Configuration error: Failed to query boolean value \"GCEnabled\""));
2463
2464	/* check if R0 code is enabled. */
2465	bool fR0Enabled;
2466	rc = CFGMR3QueryBoolDef(pCfg, "R0Enabled", &fR0Enabled, true);
2467	if (RT_FAILURE(rc))
2468	return PDMDEV_SET_ERROR(pDevIns, rc,
2469	N_("Configuration error: Failed to query boolean value \"R0Enabled\""));
2470	Log(("PCI: fGCEnabled=%RTbool fR0Enabled=%RTbool\n", fGCEnabled, fR0Enabled));
2471
2472	/*
2473	* Init data and register the PCI bus.
2474	*/
2475	PPCIBUS pBus = PDMINS_2_DATA(pDevIns, PPCIBUS);
2476	pBus->pDevInsR3 = pDevIns;
2477	pBus->pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
2478	pBus->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
2479	pBus->papBridgesR3 = (PPCIDEVICE )PDMDevHlpMMHeapAllocZ(pDevIns, sizeof(PPCIDEVICE) RT_ELEMENTS(pBus->apDevices));
2480
2481	PDMPCIBUSREG PciBusReg;
2482	PciBusReg.u32Version = PDM_PCIBUSREG_VERSION;
2483	PciBusReg.pfnRegisterR3 = ich9pcibridgeRegister;
2484	PciBusReg.pfnRegisterMsiR3 = ich9pciRegisterMsi;
2485	PciBusReg.pfnIORegionRegisterR3 = ich9pciIORegionRegister;
2486	PciBusReg.pfnSetConfigCallbacksR3 = ich9pciSetConfigCallbacks;
2487	PciBusReg.pfnSetIrqR3 = ich9pcibridgeSetIrq;
2488	PciBusReg.pfnSaveExecR3 = ich9pciGenericSaveExec;
2489	PciBusReg.pfnLoadExecR3 = ich9pciGenericLoadExec;
2490	PciBusReg.pfnFakePCIBIOSR3 = NULL; /* Only needed for the first bus. */
2491	PciBusReg.pszSetIrqRC = fGCEnabled ? "ich9pcibridgeSetIrq" : NULL;
2492	PciBusReg.pszSetIrqR0 = fR0Enabled ? "ich9pcibridgeSetIrq" : NULL;
2493	rc = PDMDevHlpPCIBusRegister(pDevIns, &PciBusReg, &pBus->pPciHlpR3);
2494	if (RT_FAILURE(rc))
2495	return PDMDEV_SET_ERROR(pDevIns, rc,
2496	N_("Failed to register ourselves as a PCI Bus"));
2497	if (pBus->pPciHlpR3->u32Version != PDM_PCIHLPR3_VERSION)
2498	return PDMDevHlpVMSetError(pDevIns, VERR_VERSION_MISMATCH, RT_SRC_POS,
2499	N_("PCI helper version mismatch; got %#x expected %#x"),
2500	pBus->pPciHlpR3->u32Version, PDM_PCIHLPR3_VERSION);
2501
2502	pBus->pPciHlpRC = pBus->pPciHlpR3->pfnGetRCHelpers(pDevIns);
2503	pBus->pPciHlpR0 = pBus->pPciHlpR3->pfnGetR0Helpers(pDevIns);
2504
2505	/*
2506	* Fill in PCI configs and add them to the bus.
2507	*/
2508	PCIDevSetVendorId( &pBus->aPciDev, 0x8086); /* Intel */
2509	PCIDevSetDeviceId( &pBus->aPciDev, 0x2448); /* 82801 Mobile PCI bridge. */
2510	PCIDevSetRevisionId(&pBus->aPciDev, 0xf2);
2511	PCIDevSetClassSub( &pBus->aPciDev, 0x04); /* pci2pci */
2512	PCIDevSetClassBase( &pBus->aPciDev, 0x06); /* PCI_bridge */
2513	PCIDevSetClassProg( &pBus->aPciDev, 0x01); /* Supports subtractive decoding. */
2514	PCIDevSetHeaderType(&pBus->aPciDev, 0x01); /* Single function device which adheres to the PCI-to-PCI bridge spec. */
2515	PCIDevSetCommand( &pBus->aPciDev, 0x00);
2516	PCIDevSetStatus( &pBus->aPciDev, 0x20); /* 66MHz Capable. */
2517	PCIDevSetInterruptLine(&pBus->aPciDev, 0x00); /* This device does not assert interrupts. */
2518
2519	/*
2520	* This device does not generate interrupts. Interrupt delivery from
2521	* devices attached to the bus is unaffected.
2522	*/
2523	PCIDevSetInterruptPin (&pBus->aPciDev, 0x00);
2524
2525	pBus->aPciDev.pDevIns = pDevIns;
2526
2527	/* Bridge-specific data */
2528	PCISetPci2PciBridge(&pBus->aPciDev);
2529	pBus->aPciDev.Int.s.pfnBridgeConfigRead = ich9pcibridgeConfigRead;
2530	pBus->aPciDev.Int.s.pfnBridgeConfigWrite = ich9pcibridgeConfigWrite;
2531
2532	/*
2533	* Register this PCI bridge. The called function will take care on which bus we will get registered.
2534	*/
2535	rc = PDMDevHlpPCIRegister (pDevIns, &pBus->aPciDev);
2536	if (RT_FAILURE(rc))
2537	return rc;
2538
2539	/*
2540	* The iBus property doesn't really represent the bus number
2541	* because the guest and the BIOS can choose different bus numbers
2542	* for them.
2543	* The bus number is mainly for the setIrq function to indicate
2544	* when the host bus is reached which will have iBus = 0.
2545	* That's why the + 1.
2546	*/
2547	pBus->iBus = iInstance + 1;
2548
2549	/*
2550	* Register SSM handlers. We use the same saved state version as for the host bridge
2551	* to make changes easier.
2552	*/
2553	rc = PDMDevHlpSSMRegisterEx(pDevIns, VBOX_ICH9PCI_SAVED_STATE_VERSION_CURRENT,
2554	sizeof(pBus) + 16128,
2555	"pgm" /* before */,
2556	NULL, NULL, NULL,
2557	NULL, ich9pcibridgeR3SaveExec, NULL,
2558	NULL, ich9pcibridgeR3LoadExec, NULL);
2559	if (RT_FAILURE(rc))
2560	return rc;
2561
2562
2563	return VINF_SUCCESS;
2564	}
2565
2566	/**
2567	* @copydoc FNPDMDEVRESET
2568	*/
2569	static DECLCALLBACK(void) ich9pcibridgeReset(PPDMDEVINS pDevIns)
2570	{
2571	PPCIBUS pBus = PDMINS_2_DATA(pDevIns, PPCIBUS);
2572
2573	/* Reset config space to default values. */
2574	PCIDevSetByte(&pBus->aPciDev, VBOX_PCI_PRIMARY_BUS, 0);
2575	PCIDevSetByte(&pBus->aPciDev, VBOX_PCI_SECONDARY_BUS, 0);
2576	PCIDevSetByte(&pBus->aPciDev, VBOX_PCI_SUBORDINATE_BUS, 0);
2577	}
2578
2579
2580	/**
2581	* @copydoc FNPDMDEVRELOCATE
2582	*/
2583	static DECLCALLBACK(void) ich9pcibridgeRelocate(PPDMDEVINS pDevIns, RTGCINTPTR offDelta)
2584	{
2585	PPCIBUS pBus = PDMINS_2_DATA(pDevIns, PPCIBUS);
2586	pBus->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
2587
2588	/* Relocate RC pointers for the attached pci devices. */
2589	for (uint32_t i = 0; i < RT_ELEMENTS(pBus->apDevices); i++)
2590	{
2591	if (pBus->apDevices[i])
2592	pBus->apDevices[i]->Int.s.pBusRC += offDelta;
2593	}
2594
2595	}
2596
2597	/**
2598	* The PCI bus device registration structure.
2599	*/
2600	const PDMDEVREG g_DevicePciIch9 =
2601	{
2602	/* u32Version */
2603	PDM_DEVREG_VERSION,
2604	/* szName */
2605	"ich9pci",
2606	/* szRCMod */
2607	"VBoxDDGC.gc",
2608	/* szR0Mod */
2609	"VBoxDDR0.r0",
2610	/* pszDescription */
2611	"ICH9 PCI bridge",
2612	/* fFlags */
2613	PDM_DEVREG_FLAGS_DEFAULT_BITS \| PDM_DEVREG_FLAGS_RC \| PDM_DEVREG_FLAGS_R0,
2614	/* fClass */
2615	PDM_DEVREG_CLASS_BUS_PCI \| PDM_DEVREG_CLASS_BUS_ISA,
2616	/* cMaxInstances */
2617	1,
2618	/* cbInstance */
2619	sizeof(PCIGLOBALS),
2620	/* pfnConstruct */
2621	ich9pciConstruct,
2622	/* pfnDestruct */
2623	NULL,
2624	/* pfnRelocate */
2625	ich9pciRelocate,
2626	/* pfnIOCtl */
2627	NULL,
2628	/* pfnPowerOn */
2629	NULL,
2630	/* pfnReset */
2631	ich9pciReset,
2632	/* pfnSuspend */
2633	NULL,
2634	/* pfnResume */
2635	NULL,
2636	/* pfnAttach */
2637	NULL,
2638	/* pfnDetach */
2639	NULL,
2640	/* pfnQueryInterface */
2641	NULL,
2642	/* pfnInitComplete */
2643	NULL,
2644	/* pfnPowerOff */
2645	NULL,
2646	/* pfnSoftReset */
2647	NULL,
2648	/* u32VersionEnd */
2649	PDM_DEVREG_VERSION
2650	};
2651
2652	/**
2653	* The device registration structure
2654	* for the PCI-to-PCI bridge.
2655	*/
2656	const PDMDEVREG g_DevicePciIch9Bridge =
2657	{
2658	/* u32Version */
2659	PDM_DEVREG_VERSION,
2660	/* szName */
2661	"ich9pcibridge",
2662	/* szRCMod */
2663	"VBoxDDGC.gc",
2664	/* szR0Mod */
2665	"VBoxDDR0.r0",
2666	/* pszDescription */
2667	"ICH9 PCI to PCI bridge",
2668	/* fFlags */
2669	PDM_DEVREG_FLAGS_DEFAULT_BITS \| PDM_DEVREG_FLAGS_RC \| PDM_DEVREG_FLAGS_R0,
2670	/* fClass */
2671	PDM_DEVREG_CLASS_BUS_PCI,
2672	/* cMaxInstances */
2673	~0,
2674	/* cbInstance */
2675	sizeof(PCIBUS),
2676	/* pfnConstruct */
2677	ich9pcibridgeConstruct,
2678	/* pfnDestruct */
2679	NULL,
2680	/* pfnRelocate */
2681	ich9pcibridgeRelocate,
2682	/* pfnIOCtl */
2683	NULL,
2684	/* pfnPowerOn */
2685	NULL,
2686	/* pfnReset */
2687	ich9pcibridgeReset,
2688	/* pfnSuspend */
2689	NULL,
2690	/* pfnResume */
2691	NULL,
2692	/* pfnAttach */
2693	NULL,
2694	/* pfnDetach */
2695	NULL,
2696	/* pfnQueryInterface */
2697	NULL,
2698	/* pfnInitComplete */
2699	NULL,
2700	/* pfnPowerOff */
2701	NULL,
2702	/* pfnSoftReset */
2703	NULL,
2704	/* u32VersionEnd */
2705	PDM_DEVREG_VERSION
2706	};
2707
2708	#endif /* IN_RING3 */
2709	#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */

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source: vbox/trunk/src/VBox/Devices/Bus/DevPciIch9.cpp@ 34014

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