DevPCI.cpp@ 67815

Last change on this file since 67815 was 67708, checked in by vboxsync, 7 years ago
DevPCI.cpp: use the refactored PCI config space access code which shares more code and makes everything much more efficient
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1	/* $Id: DevPCI.cpp 67708 2017-06-29 17:05:00Z vboxsync $ */
2	/** @file
3	* DevPCI - PCI BUS Device.
4	*
5	* @remarks New code shall be added to DevPciIch9.cpp as that will become
6	* the common PCI bus code soon. Don't fix code in both DevPCI.cpp
7	* and DevPciIch9.cpp when it's possible to just make the latter
8	* version common. Common code uses the 'devpci' prefix, is
9	* prototyped in DevPciInternal.h, and is defined in DevPciIch9.cpp.
10	*/
11
12	/*
13	* Copyright (C) 2006-2016 Oracle Corporation
14	*
15	* This file is part of VirtualBox Open Source Edition (OSE), as
16	* available from http://www.virtualbox.org. This file is free software;
17	* you can redistribute it and/or modify it under the terms of the GNU
18	* General Public License (GPL) as published by the Free Software
19	* Foundation, in version 2 as it comes in the "COPYING" file of the
20	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
21	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
22	* --------------------------------------------------------------------
23	*
24	* This code is based on:
25	*
26	* QEMU PCI bus manager
27	*
28	* Copyright (c) 2004 Fabrice Bellard
29	*
30	* Permission is hereby granted, free of charge, to any person obtaining a copy
31	* of this software and associated documentation files (the "Software"), to deal
32	* in the Software without restriction, including without limitation the rights
33	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
34	* copies of the Software, and to permit persons to whom the Software is
35	* furnished to do so, subject to the following conditions:
36	*
37	* The above copyright notice and this permission notice shall be included in
38	* all copies or substantial portions of the Software.
39	*
40	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
41	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
42	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
43	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
44	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
45	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
46	* THE SOFTWARE.
47	*/
48
49
50	/*********************************************************************************************************************************
51	* Header Files *
52	*********************************************************************************************************************************/
53	#define LOG_GROUP LOG_GROUP_DEV_PCI
54	#define PDMPCIDEV_INCLUDE_PRIVATE /* Hack to get pdmpcidevint.h included at the right point. */
55	#include <VBox/vmm/pdmpcidev.h>
56	#include <VBox/vmm/pdmdev.h>
57	#include <VBox/vmm/mm.h>
58	#include <iprt/asm.h>
59	#include <iprt/assert.h>
60	#include <iprt/string.h>
61
62	#include "PciInline.h"
63	#include "VBoxDD.h"
64	#include "DevPciInternal.h"
65
66
67	/*********************************************************************************************************************************
68	* Defined Constants And Macros *
69	*********************************************************************************************************************************/
70	/** Saved state version of the PCI bus device. */
71	#define VBOX_PCI_SAVED_STATE_VERSION VBOX_PCI_SAVED_STATE_VERSION_REGION_SIZES
72	/** Adds I/O region types and sizes for dealing changes in resource regions. */
73	#define VBOX_PCI_SAVED_STATE_VERSION_REGION_SIZES 4
74	/** Before region sizes, the first named one.
75	* Looking at the code though, we support even older version. */
76	#define VBOX_PCI_SAVED_STATE_VERSION_IRQ_STATES 3
77	/** Notes whether we use the I/O APIC. */
78	#define VBOX_PCI_SAVED_STATE_VERSION_USE_IO_APIC 2
79
80
81	/*********************************************************************************************************************************
82	* Internal Functions *
83	*********************************************************************************************************************************/
84	RT_C_DECLS_BEGIN
85
86	PDMBOTHCBDECL(void) pciSetIrq(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev, int iIrq, int iLevel, uint32_t uTag);
87	PDMBOTHCBDECL(void) pcibridgeSetIrq(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev, int iIrq, int iLevel, uint32_t uTag);
88	PDMBOTHCBDECL(int) pciIOPortAddressWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb);
89	PDMBOTHCBDECL(int) pciIOPortAddressRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb);
90	PDMBOTHCBDECL(int) pciIOPortDataWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb);
91	PDMBOTHCBDECL(int) pciIOPortDataRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb);
92
93	#ifdef IN_RING3
94	DECLINLINE(PPDMPCIDEV) pciR3FindBridge(PDEVPCIBUS pBus, uint8_t iBus);
95	#endif
96
97	RT_C_DECLS_END
98
99	#define DEBUG_PCI
100
101	#define PCI_VENDOR_ID 0x00 /* 16 bits */
102	#define PCI_DEVICE_ID 0x02 /* 16 bits */
103	#define PCI_COMMAND 0x04 /* 16 bits */
104	#define PCI_COMMAND_IO 0x01 /* Enable response in I/O space */
105	#define PCI_COMMAND_MEMORY 0x02 /* Enable response in Memory space */
106	#define PCI_CLASS_DEVICE 0x0a /* Device class */
107	#define PCI_INTERRUPT_LINE 0x3c /* 8 bits */
108	#define PCI_INTERRUPT_PIN 0x3d /* 8 bits */
109	#define PCI_MIN_GNT 0x3e /* 8 bits */
110	#define PCI_MAX_LAT 0x3f /* 8 bits */
111
112
113	static int pci_data_write(PDEVPCIROOT pGlobals, uint32_t addr, uint32_t val, int len)
114	{
115	uint8_t iBus, iDevice;
116	uint32_t config_addr;
117
118	LogFunc(("addr=%08x val=%08x len=%d\n", pGlobals->uConfigReg, val, len));
119
120	if (!(pGlobals->uConfigReg & (1 << 31))) {
121	return VINF_SUCCESS;
122	}
123	if ((pGlobals->uConfigReg & 0x3) != 0) {
124	return VINF_SUCCESS;
125	}
126	iBus = (pGlobals->uConfigReg >> 16) & 0xff;
127	iDevice = (pGlobals->uConfigReg >> 8) & 0xff;
128	config_addr = (pGlobals->uConfigReg & 0xfc) \| (addr & 3);
129	if (iBus != 0)
130	{
131	if (pGlobals->PciBus.cBridges)
132	{
133	#ifdef IN_RING3 /** @todo do lookup in R0/RC too! */
134	PPDMPCIDEV pBridgeDevice = pciR3FindBridge(&pGlobals->PciBus, iBus);
135	if (pBridgeDevice)
136	{
137	AssertPtr(pBridgeDevice->Int.s.pfnBridgeConfigWrite);
138	pBridgeDevice->Int.s.pfnBridgeConfigWrite(pBridgeDevice->Int.s.CTX_SUFF(pDevIns), iBus, iDevice, config_addr, val, len);
139	}
140	#else
141	RT_NOREF2(val, len);
142	return VINF_IOM_R3_IOPORT_WRITE;
143	#endif
144	}
145	}
146	else
147	{
148	R3PTRTYPE(PDMPCIDEV *) pci_dev = pGlobals->PciBus.apDevices[iDevice];
149	if (pci_dev)
150	{
151	#ifdef IN_RING3
152	LogFunc(("%s: addr=%02x val=%08x len=%d\n", pci_dev->pszNameR3, config_addr, val, len));
153	pci_dev->Int.s.pfnConfigWrite(pci_dev->Int.s.CTX_SUFF(pDevIns), pci_dev, config_addr, val, len);
154	#else
155	return VINF_IOM_R3_IOPORT_WRITE;
156	#endif
157	}
158	}
159	return VINF_SUCCESS;
160	}
161
162	static int pci_data_read(PDEVPCIROOT pGlobals, uint32_t addr, int len, uint32_t *pu32)
163	{
164	uint8_t iBus, iDevice;
165	uint32_t config_addr;
166
167	*pu32 = 0xffffffff;
168
169	if (!(pGlobals->uConfigReg & (1 << 31)))
170	return VINF_SUCCESS;
171	if ((pGlobals->uConfigReg & 0x3) != 0)
172	return VINF_SUCCESS;
173	iBus = (pGlobals->uConfigReg >> 16) & 0xff;
174	iDevice = (pGlobals->uConfigReg >> 8) & 0xff;
175	config_addr = (pGlobals->uConfigReg & 0xfc) \| (addr & 3);
176	if (iBus != 0)
177	{
178	if (pGlobals->PciBus.cBridges)
179	{
180	#ifdef IN_RING3 /** @todo do lookup in R0/RC too! */
181	PPDMPCIDEV pBridgeDevice = pciR3FindBridge(&pGlobals->PciBus, iBus);
182	if (pBridgeDevice)
183	{
184	AssertPtr(pBridgeDevice->Int.s.pfnBridgeConfigRead);
185	*pu32 = pBridgeDevice->Int.s.pfnBridgeConfigRead(pBridgeDevice->Int.s.CTX_SUFF(pDevIns), iBus, iDevice, config_addr, len);
186	}
187	#else
188	NOREF(len);
189	return VINF_IOM_R3_IOPORT_READ;
190	#endif
191	}
192	}
193	else
194	{
195	R3PTRTYPE(PDMPCIDEV *) pci_dev = pGlobals->PciBus.apDevices[iDevice];
196	if (pci_dev)
197	{
198	#ifdef IN_RING3
199	*pu32 = pci_dev->Int.s.pfnConfigRead(pci_dev->Int.s.CTX_SUFF(pDevIns), pci_dev, config_addr, len);
200	LogFunc(("%s: addr=%02x val=%08x len=%d\n", pci_dev->pszNameR3, config_addr, *pu32, len));
201	#else
202	NOREF(len);
203	return VINF_IOM_R3_IOPORT_READ;
204	#endif
205	}
206	}
207
208	return VINF_SUCCESS;
209	}
210
211
212
213	/* return the global irq number corresponding to a given device irq
214	pin. We could also use the bus number to have a more precise
215	mapping.
216	This is the implementation note described in the PCI spec chapter 2.2.6 */
217	static inline int pci_slot_get_pirq(uint8_t uDevFn, int irq_num)
218	{
219	int slot_addend;
220	slot_addend = (uDevFn >> 3) - 1;
221	return (irq_num + slot_addend) & 3;
222	}
223
224	static inline int pci_slot_get_apic_pirq(uint8_t uDevFn, int irq_num)
225	{
226	return (irq_num + (uDevFn >> 3)) & 7;
227	}
228
229	static inline int get_pci_irq_apic_level(PDEVPCIROOT pGlobals, int irq_num)
230	{
231	return (pGlobals->auPciApicIrqLevels[irq_num] != 0);
232	}
233
234	static void apic_set_irq(PDEVPCIBUS pBus, uint8_t uDevFn, PDMPCIDEV *pPciDev, int irq_num1, int iLevel, int iAcpiIrq, uint32_t uTagSrc)
235	{
236	/* This is only allowed to be called with a pointer to the host bus. */
237	AssertMsg(pBus->iBus == 0, ("iBus=%u\n", pBus->iBus));
238
239	if (iAcpiIrq == -1) {
240	int apic_irq, apic_level;
241	PDEVPCIROOT pGlobals = DEVPCIBUS_2_DEVPCIROOT(pBus);
242	int irq_num = pci_slot_get_apic_pirq(uDevFn, irq_num1);
243
244	if ((iLevel & PDM_IRQ_LEVEL_HIGH) == PDM_IRQ_LEVEL_HIGH)
245	ASMAtomicIncU32(&pGlobals->auPciApicIrqLevels[irq_num]);
246	else if ((iLevel & PDM_IRQ_LEVEL_HIGH) == PDM_IRQ_LEVEL_LOW)
247	ASMAtomicDecU32(&pGlobals->auPciApicIrqLevels[irq_num]);
248
249	apic_irq = irq_num + 0x10;
250	apic_level = get_pci_irq_apic_level(pGlobals, irq_num);
251	Log3Func(("%s: irq_num1=%d level=%d apic_irq=%d apic_level=%d irq_num1=%d\n",
252	R3STRING(pPciDev->pszNameR3), irq_num1, iLevel, apic_irq, apic_level, irq_num));
253	pBus->CTX_SUFF(pPciHlp)->pfnIoApicSetIrq(pBus->CTX_SUFF(pDevIns), apic_irq, apic_level, uTagSrc);
254
255	if ((iLevel & PDM_IRQ_LEVEL_FLIP_FLOP) == PDM_IRQ_LEVEL_FLIP_FLOP) {
256	ASMAtomicDecU32(&pGlobals->auPciApicIrqLevels[irq_num]);
257	pPciDev->Int.s.uIrqPinState = PDM_IRQ_LEVEL_LOW;
258	apic_level = get_pci_irq_apic_level(pGlobals, irq_num);
259	Log3Func(("%s: irq_num1=%d level=%d apic_irq=%d apic_level=%d irq_num1=%d (flop)\n",
260	R3STRING(pPciDev->pszNameR3), irq_num1, iLevel, apic_irq, apic_level, irq_num));
261	pBus->CTX_SUFF(pPciHlp)->pfnIoApicSetIrq(pBus->CTX_SUFF(pDevIns), apic_irq, apic_level, uTagSrc);
262	}
263	} else {
264	Log3Func(("%s: irq_num1=%d level=%d iAcpiIrq=%d\n",
265	R3STRING(pPciDev->pszNameR3), irq_num1, iLevel, iAcpiIrq));
266	pBus->CTX_SUFF(pPciHlp)->pfnIoApicSetIrq(pBus->CTX_SUFF(pDevIns), iAcpiIrq, iLevel, uTagSrc);
267	}
268	}
269
270	DECLINLINE(int) get_pci_irq_level(PDEVPCIROOT pGlobals, int irq_num)
271	{
272	return (pGlobals->Piix3.auPciLegacyIrqLevels[irq_num] != 0);
273	}
274
275	/**
276	* Set the IRQ for a PCI device on the host bus - shared by host bus and bridge.
277	*
278	* @param pGlobals Device instance of the host PCI Bus.
279	* @param uDevFn The device number on the host bus which will raise the IRQ
280	* @param pPciDev The PCI device structure which raised the interrupt.
281	* @param iIrq IRQ number to set.
282	* @param iLevel IRQ level.
283	* @param uTagSrc The IRQ tag and source ID (for tracing).
284	* @remark uDevFn and pPciDev->uDevFn are not the same if the device is behind
285	* a bridge. In that case uDevFn will be the slot of the bridge which
286	* is needed to calculate the PIRQ value.
287	*/
288	static void pciSetIrqInternal(PDEVPCIROOT pGlobals, uint8_t uDevFn, PPDMPCIDEV pPciDev, int iIrq, int iLevel, uint32_t uTagSrc)
289	{
290	PDEVPCIBUS pBus = &pGlobals->PciBus;
291	uint8_t *pbCfg = pGlobals->Piix3.PIIX3State.dev.abConfig;
292	const bool fIsAcpiDevice = pPciDev->abConfig[2] == 0x13 && pPciDev->abConfig[3] == 0x71;
293	/* If the two configuration space bytes at 0xde, 0xad are set to 0xbe, 0xef, a back door
294	* is opened to route PCI interrupts directly to the I/O APIC and bypass the PIC.
295	* See the \_SB_.PCI0._PRT method in vbox.dsl.
296	*/
297	const bool fIsApicEnabled = pGlobals->fUseIoApic && pbCfg[0xde] == 0xbe && pbCfg[0xad] == 0xef;
298	int pic_irq, pic_level;
299
300	/* Check if the state changed. */
301	if (pPciDev->Int.s.uIrqPinState != iLevel)
302	{
303	pPciDev->Int.s.uIrqPinState = (iLevel & PDM_IRQ_LEVEL_HIGH);
304
305	/* Send interrupt to I/O APIC only. */
306	if (fIsApicEnabled)
307	{
308	if (fIsAcpiDevice)
309	/*
310	* ACPI needs special treatment since SCI is hardwired and
311	* should not be affected by PCI IRQ routing tables at the
312	* same time SCI IRQ is shared in PCI sense hence this
313	* kludge (i.e. we fetch the hardwired value from ACPIs
314	* PCI device configuration space).
315	*/
316	apic_set_irq(pBus, uDevFn, pPciDev, -1, iLevel, pPciDev->abConfig[PCI_INTERRUPT_LINE], uTagSrc);
317	else
318	apic_set_irq(pBus, uDevFn, pPciDev, iIrq, iLevel, -1, uTagSrc);
319	return;
320	}
321
322	if (fIsAcpiDevice)
323	{
324	/* As per above treat ACPI in a special way */
325	pic_irq = pPciDev->abConfig[PCI_INTERRUPT_LINE];
326	pGlobals->Piix3.iAcpiIrq = pic_irq;
327	pGlobals->Piix3.iAcpiIrqLevel = iLevel & PDM_IRQ_LEVEL_HIGH;
328	}
329	else
330	{
331	int irq_num;
332	irq_num = pci_slot_get_pirq(uDevFn, iIrq);
333
334	if (pPciDev->Int.s.uIrqPinState == PDM_IRQ_LEVEL_HIGH)
335	ASMAtomicIncU32(&pGlobals->Piix3.auPciLegacyIrqLevels[irq_num]);
336	else if (pPciDev->Int.s.uIrqPinState == PDM_IRQ_LEVEL_LOW)
337	ASMAtomicDecU32(&pGlobals->Piix3.auPciLegacyIrqLevels[irq_num]);
338
339	/* now we change the pic irq level according to the piix irq mappings */
340	pic_irq = pbCfg[0x60 + irq_num];
341	if (pic_irq >= 16)
342	{
343	if ((iLevel & PDM_IRQ_LEVEL_FLIP_FLOP) == PDM_IRQ_LEVEL_FLIP_FLOP)
344	{
345	ASMAtomicDecU32(&pGlobals->Piix3.auPciLegacyIrqLevels[irq_num]);
346	pPciDev->Int.s.uIrqPinState = PDM_IRQ_LEVEL_LOW;
347	}
348
349	return;
350	}
351	}
352
353	/* the pic level is the logical OR of all the PCI irqs mapped to it */
354	pic_level = 0;
355	if (pic_irq == pbCfg[0x60])
356	pic_level \|= get_pci_irq_level(pGlobals, 0);
357	if (pic_irq == pbCfg[0x61])
358	pic_level \|= get_pci_irq_level(pGlobals, 1);
359	if (pic_irq == pbCfg[0x62])
360	pic_level \|= get_pci_irq_level(pGlobals, 2);
361	if (pic_irq == pbCfg[0x63])
362	pic_level \|= get_pci_irq_level(pGlobals, 3);
363	if (pic_irq == pGlobals->Piix3.iAcpiIrq)
364	pic_level \|= pGlobals->Piix3.iAcpiIrqLevel;
365
366	Log3Func(("%s: iLevel=%d iIrq=%d pic_irq=%d pic_level=%d uTagSrc=%#x\n",
367	R3STRING(pPciDev->pszNameR3), iLevel, iIrq, pic_irq, pic_level, uTagSrc));
368	pBus->CTX_SUFF(pPciHlp)->pfnIsaSetIrq(pBus->CTX_SUFF(pDevIns), pic_irq, pic_level, uTagSrc);
369
370	/** @todo optimize pci irq flip-flop some rainy day. */
371	if ((iLevel & PDM_IRQ_LEVEL_FLIP_FLOP) == PDM_IRQ_LEVEL_FLIP_FLOP)
372	pciSetIrqInternal(pGlobals, uDevFn, pPciDev, iIrq, PDM_IRQ_LEVEL_LOW, uTagSrc);
373	}
374	}
375
376
377	/**
378	* @interface_method_impl{PDMPCIBUSREG,pfnSetIrqR3}
379	*/
380	PDMBOTHCBDECL(void) pciSetIrq(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev, int iIrq, int iLevel, uint32_t uTagSrc)
381	{
382	pciSetIrqInternal(PDMINS_2_DATA(pDevIns, PDEVPCIROOT), pPciDev->uDevFn, pPciDev, iIrq, iLevel, uTagSrc);
383	}
384
385	#ifdef IN_RING3
386
387	/**
388	* Finds a bridge on the bus which contains the destination bus.
389	*
390	* @return Pointer to the device instance data of the bus or
391	* NULL if no bridge was found.
392	* @param pBus Pointer to the bus to search on.
393	* @param iBus Destination bus number.
394	*/
395	DECLINLINE(PPDMPCIDEV) pciR3FindBridge(PDEVPCIBUS pBus, uint8_t iBus)
396	{
397	/* Search for a fitting bridge. */
398	for (uint32_t iBridge = 0; iBridge < pBus->cBridges; iBridge++)
399	{
400	/*
401	* Examine secondary and subordinate bus number.
402	* If the target bus is in the range we pass the request on to the bridge.
403	*/
404	PPDMPCIDEV pBridgeTemp = pBus->papBridgesR3[iBridge];
405	AssertMsg(pBridgeTemp && pciDevIsPci2PciBridge(pBridgeTemp),
406	("Device is not a PCI bridge but on the list of PCI bridges\n"));
407
408	if ( iBus >= pBridgeTemp->abConfig[VBOX_PCI_SECONDARY_BUS]
409	&& iBus <= pBridgeTemp->abConfig[VBOX_PCI_SUBORDINATE_BUS])
410	return pBridgeTemp;
411	}
412
413	/* Nothing found. */
414	return NULL;
415	}
416
417	static void pciR3Piix3Reset(PIIX3ISABRIDGE *d)
418	{
419	uint8_t *pci_conf = d->dev.abConfig;
420
421	pci_conf[0x04] = 0x07; /* master, memory and I/O */
422	pci_conf[0x05] = 0x00;
423	pci_conf[0x06] = 0x00;
424	pci_conf[0x07] = 0x02; /* PCI_status_devsel_medium */
425	pci_conf[0x4c] = 0x4d;
426	pci_conf[0x4e] = 0x03;
427	pci_conf[0x4f] = 0x00;
428	pci_conf[0x60] = 0x80;
429	pci_conf[0x69] = 0x02;
430	pci_conf[0x70] = 0x80;
431	pci_conf[0x76] = 0x0c;
432	pci_conf[0x77] = 0x0c;
433	pci_conf[0x78] = 0x02;
434	pci_conf[0x79] = 0x00;
435	pci_conf[0x80] = 0x00;
436	pci_conf[0x82] = 0x02; /* Get rid of the Linux guest "Enabling Passive Release" PCI quirk warning. */
437	pci_conf[0xa0] = 0x08;
438	pci_conf[0xa2] = 0x00;
439	pci_conf[0xa3] = 0x00;
440	pci_conf[0xa4] = 0x00;
441	pci_conf[0xa5] = 0x00;
442	pci_conf[0xa6] = 0x00;
443	pci_conf[0xa7] = 0x00;
444	pci_conf[0xa8] = 0x0f;
445	pci_conf[0xaa] = 0x00;
446	pci_conf[0xab] = 0x00;
447	pci_conf[0xac] = 0x00;
448	pci_conf[0xae] = 0x00;
449	}
450
451	/* host irqs corresponding to PCI irqs A-D */
452	static const uint8_t pci_irqs[4] = { 11, 9, 11, 9 }; /* bird: added const */
453
454	static void pci_bios_init_device(PDEVPCIROOT pGlobals, PDEVPCIBUS pBus, PPDMPCIDEV pPciDev, uint8_t cBridgeDepth, uint8_t *paBridgePositions)
455	{
456	uint32_t *paddr;
457	int pin, pic_irq;
458	uint16_t devclass, vendor_id, device_id;
459
460	devclass = devpciR3GetWord(pPciDev, PCI_CLASS_DEVICE);
461	vendor_id = devpciR3GetWord(pPciDev, PCI_VENDOR_ID);
462	device_id = devpciR3GetWord(pPciDev, PCI_DEVICE_ID);
463
464	/* Check if device is present. */
465	if (vendor_id != 0xffff)
466	{
467	switch(devclass)
468	{
469	case 0x0101:
470	if ( (vendor_id == 0x8086)
471	&& (device_id == 0x7010 \|\| device_id == 0x7111 \|\| device_id == 0x269e))
472	{
473	/* PIIX3, PIIX4 or ICH6 IDE */
474	devpciR3SetWord(pPciDev, 0x40, 0x8000); /* enable IDE0 */
475	devpciR3SetWord(pPciDev, 0x42, 0x8000); /* enable IDE1 */
476	goto default_map;
477	}
478	else
479	{
480	/* IDE: we map it as in ISA mode */
481	devpciR3BiosInitSetRegionAddress(pBus, pPciDev, 0, 0x1f0);
482	devpciR3BiosInitSetRegionAddress(pBus, pPciDev, 1, 0x3f4);
483	devpciR3BiosInitSetRegionAddress(pBus, pPciDev, 2, 0x170);
484	devpciR3BiosInitSetRegionAddress(pBus, pPciDev, 3, 0x374);
485	devpciR3SetWord(pPciDev, PCI_COMMAND,
486	devpciR3GetWord(pPciDev, PCI_COMMAND)
487	\| PCI_COMMAND_IOACCESS);
488	}
489	break;
490	case 0x0300:
491	if (vendor_id != 0x80ee)
492	goto default_map;
493	/* VGA: map frame buffer to default Bochs VBE address */
494	devpciR3BiosInitSetRegionAddress(pBus, pPciDev, 0, 0xe0000000);
495	/*
496	* Legacy VGA I/O ports are implicitly decoded by a VGA class device. But
497	* only the framebuffer (i.e., a memory region) is explicitly registered via
498	* devpciR3BiosInitSetRegionAddress, so don't forget to enable I/O decoding.
499	*/
500	devpciR3SetWord(pPciDev, PCI_COMMAND,
501	devpciR3GetWord(pPciDev, PCI_COMMAND)
502	\| PCI_COMMAND_IOACCESS \| PCI_COMMAND_MEMACCESS);
503	break;
504	case 0x0800:
505	/* PIC */
506	vendor_id = devpciR3GetWord(pPciDev, PCI_VENDOR_ID);
507	device_id = devpciR3GetWord(pPciDev, PCI_DEVICE_ID);
508	if (vendor_id == 0x1014)
509	{
510	/* IBM */
511	if (device_id == 0x0046 \|\| device_id == 0xFFFF)
512	{
513	/* MPIC & MPIC2 */
514	devpciR3BiosInitSetRegionAddress(pBus, pPciDev, 0, 0x80800000 + 0x00040000);
515	devpciR3SetWord(pPciDev, PCI_COMMAND,
516	devpciR3GetWord(pPciDev, PCI_COMMAND)
517	\| PCI_COMMAND_MEMACCESS);
518	}
519	}
520	break;
521	case 0xff00:
522	if ( (vendor_id == 0x0106b)
523	&& (device_id == 0x0017 \|\| device_id == 0x0022))
524	{
525	/* macio bridge */
526	devpciR3BiosInitSetRegionAddress(pBus, pPciDev, 0, 0x80800000);
527	devpciR3SetWord(pPciDev, PCI_COMMAND,
528	devpciR3GetWord(pPciDev, PCI_COMMAND)
529	\| PCI_COMMAND_MEMACCESS);
530	}
531	break;
532	case 0x0604:
533	{
534	/* Init PCI-to-PCI bridge. */
535	devpciR3SetByte(pPciDev, VBOX_PCI_PRIMARY_BUS, pBus->iBus);
536
537	AssertMsg(pGlobals->uPciBiosBus < 255, ("Too many bridges on the bus\n"));
538	pGlobals->uPciBiosBus++;
539	devpciR3SetByte(pPciDev, VBOX_PCI_SECONDARY_BUS, pGlobals->uPciBiosBus);
540	devpciR3SetByte(pPciDev, VBOX_PCI_SUBORDINATE_BUS, 0xff); /* Temporary until we know how many other bridges are behind this one. */
541
542	/* Add position of this bridge into the array. */
543	paBridgePositions[cBridgeDepth+1] = (pPciDev->uDevFn >> 3);
544
545	/*
546	* The I/O range for the bridge must be aligned to a 4KB boundary.
547	* This does not change anything really as the access to the device is not going
548	* through the bridge but we want to be compliant to the spec.
549	*/
550	if ((pGlobals->uPciBiosIo % _4K) != 0)
551	pGlobals->uPciBiosIo = RT_ALIGN_32(pGlobals->uPciBiosIo, _4K);
552	LogFunc(("Aligned I/O start address. New address %#x\n", pGlobals->uPciBiosIo));
553	devpciR3SetByte(pPciDev, VBOX_PCI_IO_BASE, (pGlobals->uPciBiosIo >> 8) & 0xf0);
554
555	/* The MMIO range for the bridge must be aligned to a 1MB boundary. */
556	if ((pGlobals->uPciBiosMmio % _1M) != 0)
557	pGlobals->uPciBiosMmio = RT_ALIGN_32(pGlobals->uPciBiosMmio, _1M);
558	LogFunc(("Aligned MMIO start address. New address %#x\n", pGlobals->uPciBiosMmio));
559	devpciR3SetWord(pPciDev, VBOX_PCI_MEMORY_BASE, (pGlobals->uPciBiosMmio >> 16) & UINT32_C(0xffff0));
560
561	/* Save values to compare later to. */
562	uint32_t u32IoAddressBase = pGlobals->uPciBiosIo;
563	uint32_t u32MMIOAddressBase = pGlobals->uPciBiosMmio;
564
565	/* Init devices behind the bridge and possibly other bridges as well. */
566	PDEVPCIBUS pChildBus = PDMINS_2_DATA(pPciDev->Int.s.CTX_SUFF(pDevIns), PDEVPCIBUS);
567	for (uint32_t uDevFn = 0; uDevFn < RT_ELEMENTS(pChildBus->apDevices); uDevFn++)
568	{
569	PPDMPCIDEV pChildPciDev = pChildBus->apDevices[uDevFn];
570	if (pChildPciDev)
571	pci_bios_init_device(pGlobals, pChildBus, pChildPciDev, cBridgeDepth + 1, paBridgePositions);
572	}
573
574	/* The number of bridges behind the this one is now available. */
575	devpciR3SetByte(pPciDev, VBOX_PCI_SUBORDINATE_BUS, pGlobals->uPciBiosBus);
576
577	/*
578	* Set I/O limit register. If there is no device with I/O space behind the bridge
579	* we set a lower value than in the base register.
580	* The result with a real bridge is that no I/O transactions are passed to the secondary
581	* interface. Again this doesn't really matter here but we want to be compliant to the spec.
582	*/
583	if ((u32IoAddressBase != pGlobals->uPciBiosIo) && ((pGlobals->uPciBiosIo % _4K) != 0))
584	{
585	/* The upper boundary must be one byte less than a 4KB boundary. */
586	pGlobals->uPciBiosIo = RT_ALIGN_32(pGlobals->uPciBiosIo, _4K);
587	}
588	devpciR3SetByte(pPciDev, VBOX_PCI_IO_LIMIT, ((pGlobals->uPciBiosIo >> 8) & 0xf0) - 1);
589
590	/* Same with the MMIO limit register but with 1MB boundary here. */
591	if ((u32MMIOAddressBase != pGlobals->uPciBiosMmio) && ((pGlobals->uPciBiosMmio % _1M) != 0))
592	{
593	/* The upper boundary must be one byte less than a 1MB boundary. */
594	pGlobals->uPciBiosMmio = RT_ALIGN_32(pGlobals->uPciBiosMmio, _1M);
595	}
596	devpciR3SetWord(pPciDev, VBOX_PCI_MEMORY_LIMIT, ((pGlobals->uPciBiosMmio >> 16) & UINT32_C(0xfff0)) - 1);
597
598	/*
599	* Set the prefetch base and limit registers. We currently have no device with a prefetchable region
600	* which may be behind a bridge. That's why it is unconditionally disabled here atm by writing a higher value into
601	* the base register than in the limit register.
602	*/
603	devpciR3SetWord(pPciDev, VBOX_PCI_PREF_MEMORY_BASE, 0xfff0);
604	devpciR3SetWord(pPciDev, VBOX_PCI_PREF_MEMORY_LIMIT, 0x0);
605	devpciR3SetDWord(pPciDev, VBOX_PCI_PREF_BASE_UPPER32, 0x00);
606	devpciR3SetDWord(pPciDev, VBOX_PCI_PREF_LIMIT_UPPER32, 0x00);
607	break;
608	}
609	default:
610	default_map:
611	{
612	/* default memory mappings */
613	bool fActiveMemRegion = false;
614	bool fActiveIORegion = false;
615	/*
616	* PCI_NUM_REGIONS is 7 because of the rom region but there are only 6 base address register defined by the PCI spec.
617	* Leaving only PCI_NUM_REGIONS would cause reading another and enabling a memory region which does not exist.
618	*/
619	for (unsigned i = 0; i < (PCI_NUM_REGIONS-1); i++)
620	{
621	uint32_t u32Size;
622	uint8_t u8RessourceType;
623	uint32_t u32Address = 0x10 + i * 4;
624
625	/* Calculate size. */
626	u8RessourceType = devpciR3GetByte(pPciDev, u32Address);
627	devpciR3SetDWord(pPciDev, u32Address, UINT32_C(0xffffffff));
628	u32Size = devpciR3GetDWord(pPciDev, u32Address);
629	bool fIsPio = ((u8RessourceType & PCI_COMMAND_IOACCESS) == PCI_COMMAND_IOACCESS);
630	/* Clear resource information depending on resource type. */
631	if (fIsPio) /* I/O */
632	u32Size &= ~(0x01);
633	else /* MMIO */
634	u32Size &= ~(0x0f);
635
636	/*
637	* Invert all bits and add 1 to get size of the region.
638	* (From PCI implementation note)
639	*/
640	if (fIsPio && (u32Size & UINT32_C(0xffff0000)) == 0)
641	u32Size = (~(u32Size \| UINT32_C(0xffff0000))) + 1;
642	else
643	u32Size = (~u32Size) + 1;
644
645	Log2Func(("Size of region %u for device %d on bus %d is %u\n", i, pPciDev->uDevFn, pBus->iBus, u32Size));
646
647	if (u32Size)
648	{
649	if (fIsPio)
650	paddr = &pGlobals->uPciBiosIo;
651	else
652	paddr = &pGlobals->uPciBiosMmio;
653	uint32_t uNew = *paddr;
654	uNew = (uNew + u32Size - 1) & ~(u32Size - 1);
655	if (fIsPio)
656	uNew &= UINT32_C(0xffff);
657	/* Unconditionally exclude I/O-APIC/HPET/ROM. Pessimistic, but better than causing a mess. */
658	if (!uNew \|\| (uNew <= UINT32_C(0xffffffff) && uNew + u32Size - 1 >= UINT32_C(0xfec00000)))
659	{
660	LogRel(("PCI: no space left for BAR%u of device %u/%u/%u (vendor=%#06x device=%#06x)\n",
661	i, pBus->iBus, pPciDev->uDevFn >> 3, pPciDev->uDevFn & 7, vendor_id, device_id)); /** @todo make this a VM start failure later. */
662	/* Undo the mapping mess caused by the size probing. */
663	devpciR3SetDWord(pPciDev, u32Address, UINT32_C(0));
664	}
665	else
666	{
667	LogFunc(("Start address of %s region %u is %#x\n", (fIsPio ? "I/O" : "MMIO"), i, uNew));
668	devpciR3BiosInitSetRegionAddress(pBus, pPciDev, i, uNew);
669	if (fIsPio)
670	fActiveIORegion = true;
671	else
672	fActiveMemRegion = true;
673	*paddr = uNew + u32Size;
674	Log2Func(("New address is %#x\n", *paddr));
675	}
676	}
677	}
678
679	/* Update the command word appropriately. */
680	devpciR3SetWord(pPciDev, PCI_COMMAND,
681	devpciR3GetWord(pPciDev, PCI_COMMAND)
682	\| (fActiveMemRegion ? PCI_COMMAND_MEMACCESS : 0)
683	\| (fActiveIORegion ? PCI_COMMAND_IOACCESS : 0));
684
685	break;
686	}
687	}
688
689	/* map the interrupt */
690	pin = devpciR3GetByte(pPciDev, PCI_INTERRUPT_PIN);
691	if (pin != 0)
692	{
693	uint8_t uBridgeDevFn = pPciDev->uDevFn;
694	pin--;
695
696	/* We need to go up to the host bus to see which irq this device will assert there. */
697	while (cBridgeDepth != 0)
698	{
699	/* Get the pin the device would assert on the bridge. */
700	pin = ((uBridgeDevFn >> 3) + pin) & 3;
701	uBridgeDevFn = paBridgePositions[cBridgeDepth];
702	cBridgeDepth--;
703	}
704
705	pin = pci_slot_get_pirq(pPciDev->uDevFn, pin);
706	pic_irq = pci_irqs[pin];
707	devpciR3SetByte(pPciDev, PCI_INTERRUPT_LINE, pic_irq);
708	}
709	}
710	}
711
712	/**
713	* Worker for Fake PCI BIOS config, triggered by magic port access by BIOS.
714	*
715	* @returns VBox status code.
716	*
717	* @param pDevIns i440FX device instance.
718	*/
719	static int pciR3FakePCIBIOS(PPDMDEVINS pDevIns)
720	{
721	uint8_t elcr[2] = {0, 0};
722	PDEVPCIROOT pGlobals = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
723	PVM pVM = PDMDevHlpGetVM(pDevIns); Assert(pVM);
724	PVMCPU pVCpu = PDMDevHlpGetVMCPU(pDevIns); Assert(pVM);
725	uint32_t const cbBelow4GB = MMR3PhysGetRamSizeBelow4GB(pVM);
726	uint64_t const cbAbove4GB = MMR3PhysGetRamSizeAbove4GB(pVM);
727	RT_NOREF(cbBelow4GB, cbAbove4GB);
728
729	LogRel(("PCI: setting up resources and interrupts\n"));
730
731	/*
732	* Set the start addresses.
733	*/
734	pGlobals->uPciBiosBus = 0;
735	pGlobals->uPciBiosIo = 0xd000;
736	pGlobals->uPciBiosMmio = UINT32_C(0xf0000000);
737
738	/*
739	* Activate IRQ mappings.
740	*/
741	PPDMPCIDEV pPIIX3 = &pGlobals->Piix3.PIIX3State.dev;
742	for (unsigned i = 0; i < 4; i++)
743	{
744	uint8_t irq = pci_irqs[i];
745	/* Set to trigger level. */
746	elcr[irq >> 3] \|= (1 << (irq & 7));
747	/* Activate irq remapping in PIIX3. */
748	devpciR3SetByte(pPIIX3, 0x60 + i, irq);
749	}
750
751	/* Tell to the PIC. */
752	VBOXSTRICTRC rcStrict = IOMIOPortWrite(pVM, pVCpu, 0x4d0, elcr[0], sizeof(uint8_t));
753	if (rcStrict == VINF_SUCCESS)
754	rcStrict = IOMIOPortWrite(pVM, pVCpu, 0x4d1, elcr[1], sizeof(uint8_t));
755	if (rcStrict != VINF_SUCCESS)
756	{
757	AssertMsgFailed(("Writing to PIC failed! rcStrict=%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
758	return RT_SUCCESS(rcStrict) ? VERR_INTERNAL_ERROR : VBOXSTRICTRC_VAL(rcStrict);
759	}
760
761	/*
762	* Init the devices.
763	*/
764	PDEVPCIBUS pBus = &pGlobals->PciBus;
765	for (uint32_t uDevFn = 0; uDevFn < RT_ELEMENTS(pBus->apDevices); uDevFn++)
766	{
767	PPDMPCIDEV pPciDev = pBus->apDevices[uDevFn];
768	uint8_t aBridgePositions[256];
769
770	if (pPciDev)
771	{
772	memset(aBridgePositions, 0, sizeof(aBridgePositions));
773	Log2(("PCI: Initializing device %d (%#x)\n",
774	uDevFn, 0x80000000 \| (uDevFn << 8)));
775	pci_bios_init_device(pGlobals, pBus, pPciDev, 0, aBridgePositions);
776	}
777	}
778
779	return VINF_SUCCESS;
780	}
781
782	#endif /* IN_RING3 */
783
784
785	/* -=-=-=-=-=- I/O ports -=-=-=-=-=- */
786
787	/**
788	* @callback_method_impl{FNIOMIOPORTOUT, PCI address}
789	*/
790	PDMBOTHCBDECL(int) pciIOPortAddressWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
791	{
792	LogFunc(("Port=%#x u32=%#x cb=%d\n", Port, u32, cb));
793	RT_NOREF2(Port, pvUser);
794	if (cb == 4)
795	{
796	PDEVPCIROOT pThis = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
797	PCI_LOCK(pDevIns, VINF_IOM_R3_IOPORT_WRITE);
798	pThis->uConfigReg = u32 & ~3; /* Bits 0-1 are reserved and we silently clear them */
799	PCI_UNLOCK(pDevIns);
800	}
801	/* else: 440FX does "pass through to the bus" for other writes, what ever that means.
802	* Linux probes for cmd640 using byte writes/reads during ide init. We'll just ignore it. */
803	return VINF_SUCCESS;
804	}
805
806
807	/**
808	* @callback_method_impl{FNIOMIOPORTIN, PCI address}
809	*/
810	PDMBOTHCBDECL(int) pciIOPortAddressRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
811	{
812	RT_NOREF2(Port, pvUser);
813	if (cb == 4)
814	{
815	PDEVPCIROOT pThis = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
816	PCI_LOCK(pDevIns, VINF_IOM_R3_IOPORT_READ);
817	*pu32 = pThis->uConfigReg;
818	PCI_UNLOCK(pDevIns);
819	LogFunc(("Port=%#x cb=%d -> %#x\n", Port, cb, *pu32));
820	return VINF_SUCCESS;
821	}
822	/* else: 440FX does "pass through to the bus" for other writes, what ever that means.
823	* Linux probes for cmd640 using byte writes/reads during ide init. We'll just ignore it. */
824	LogFunc(("Port=%#x cb=%d VERR_IOM_IOPORT_UNUSED\n", Port, cb));
825	return VERR_IOM_IOPORT_UNUSED;
826	}
827
828
829	/**
830	* @callback_method_impl{FNIOMIOPORTOUT, PCI data}
831	*/
832	PDMBOTHCBDECL(int) pciIOPortDataWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
833	{
834	LogFunc(("Port=%#x u32=%#x cb=%d\n", Port, u32, cb));
835	NOREF(pvUser);
836	int rc = VINF_SUCCESS;
837	if (!(Port % cb))
838	{
839	PCI_LOCK(pDevIns, VINF_IOM_R3_IOPORT_WRITE);
840	rc = pci_data_write(PDMINS_2_DATA(pDevIns, PDEVPCIROOT), Port, u32, cb);
841	PCI_UNLOCK(pDevIns);
842	}
843	else
844	AssertMsgFailed(("Write to port %#x u32=%#x cb=%d\n", Port, u32, cb));
845	return rc;
846	}
847
848
849	/**
850	* @callback_method_impl{FNIOMIOPORTIN, PCI data}
851	*/
852	PDMBOTHCBDECL(int) pciIOPortDataRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
853	{
854	NOREF(pvUser);
855	if (!(Port % cb))
856	{
857	PCI_LOCK(pDevIns, VINF_IOM_R3_IOPORT_READ);
858	int rc = pci_data_read(PDMINS_2_DATA(pDevIns, PDEVPCIROOT), Port, cb, pu32);
859	PCI_UNLOCK(pDevIns);
860	LogFunc(("Port=%#x cb=%#x -> %#x (%Rrc)\n", Port, cb, *pu32, rc));
861	return rc;
862	}
863	AssertMsgFailed(("Read from port %#x cb=%d\n", Port, cb));
864	return VERR_IOM_IOPORT_UNUSED;
865	}
866
867	#ifdef IN_RING3
868
869	/**
870	* @callback_method_impl{FNIOMIOPORTOUT, PCI data}
871	*/
872	DECLCALLBACK(int) pciR3IOPortMagicPCIWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
873	{
874	RT_NOREF2(pvUser, Port);
875	LogFunc(("Port=%#x u32=%#x cb=%d\n", Port, u32, cb));
876	if (cb == 4)
877	{
878	if (u32 == UINT32_C(19200509)) // Richard Adams
879	{
880	int rc = pciR3FakePCIBIOS(pDevIns);
881	AssertRC(rc);
882	}
883	}
884
885	return VINF_SUCCESS;
886	}
887
888	/**
889	* @callback_method_impl{FNIOMIOPORTIN, PCI data}
890	*/
891	DECLCALLBACK(int) pciR3IOPortMagicPCIRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
892	{
893	RT_NOREF5(pDevIns, pvUser, Port, pu32, cb);
894	LogFunc(("Port=%#x cb=%d VERR_IOM_IOPORT_UNUSED\n", Port, cb));
895	return VERR_IOM_IOPORT_UNUSED;
896	}
897
898
899	/*
900	* Include code we share with the other PCI bus implementation.
901	*
902	* Note! No #ifdefs, use instant data booleans/flags/whatever. Goal is to
903	* completely merge these files! File #1 contains code we write, where
904	* as a possible file #2 contains external code if there's any left.
905	*/
906	# include "DevPciMerge1.cpp.h"
907
908
909	/* -=-=-=-=-=- Saved state -=-=-=-=-=- */
910
911	/**
912	* Common worker for pciR3SaveExec and pcibridgeR3SaveExec.
913	*
914	* @returns VBox status code.
915	* @param pBus The bus to save.
916	* @param pSSM The saved state handle.
917	*/
918	static int pciR3CommonSaveExec(PDEVPCIBUS pBus, PSSMHANDLE pSSM)
919	{
920	/*
921	* Iterate thru all the devices.
922	*/
923	for (uint32_t uDevFn = 0; uDevFn < RT_ELEMENTS(pBus->apDevices); uDevFn++)
924	{
925	PPDMPCIDEV pDev = pBus->apDevices[uDevFn];
926	if (pDev)
927	{
928	SSMR3PutU32(pSSM, uDevFn);
929	SSMR3PutMem(pSSM, pDev->abConfig, sizeof(pDev->abConfig));
930
931	SSMR3PutS32(pSSM, pDev->Int.s.uIrqPinState);
932
933	/* Save the type an size of all the regions. */
934	for (uint32_t iRegion = 0; iRegion < VBOX_PCI_NUM_REGIONS; iRegion++)
935	{
936	SSMR3PutU8(pSSM, pDev->Int.s.aIORegions[iRegion].type);
937	SSMR3PutU64(pSSM, pDev->Int.s.aIORegions[iRegion].size);
938	}
939	}
940	}
941	return SSMR3PutU32(pSSM, UINT32_MAX); /* terminator */
942	}
943
944
945	/**
946	* @callback_method_impl{FNSSMDEVSAVEEXEC}
947	*/
948	static DECLCALLBACK(int) pciR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
949	{
950	PDEVPCIROOT pThis = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
951
952	/*
953	* Bus state data.
954	*/
955	SSMR3PutU32(pSSM, pThis->uConfigReg);
956	SSMR3PutBool(pSSM, pThis->fUseIoApic);
957
958	/*
959	* Save IRQ states.
960	*/
961	for (unsigned i = 0; i < RT_ELEMENTS(pThis->Piix3.auPciLegacyIrqLevels); i++)
962	SSMR3PutU32(pSSM, pThis->Piix3.auPciLegacyIrqLevels[i]);
963	for (unsigned i = 0; i < RT_ELEMENTS(pThis->auPciApicIrqLevels); i++)
964	SSMR3PutU32(pSSM, pThis->auPciApicIrqLevels[i]);
965
966	SSMR3PutU32(pSSM, pThis->Piix3.iAcpiIrqLevel);
967	SSMR3PutS32(pSSM, pThis->Piix3.iAcpiIrq);
968
969	SSMR3PutU32(pSSM, UINT32_MAX); /* separator */
970
971	/*
972	* Join paths with pcibridgeR3SaveExec.
973	*/
974	return pciR3CommonSaveExec(&pThis->PciBus, pSSM);
975	}
976
977
978	/**
979	* Common worker for pciR3LoadExec and pcibridgeR3LoadExec.
980	*
981	* @returns VBox status code.
982	* @param pBus The bus which data is being loaded.
983	* @param pSSM The saved state handle.
984	* @param uVersion The data version.
985	* @param uPass The pass.
986	*/
987	static DECLCALLBACK(int) pciR3CommonLoadExec(PDEVPCIBUS pBus, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
988	{
989	uint32_t u32;
990	int rc;
991
992	Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
993
994	/*
995	* Iterate thru all the devices and write 0 to the COMMAND register so
996	* that all the memory is unmapped before we start restoring the saved
997	* mapping locations.
998	*
999	* The register value is restored afterwards so we can do proper
1000	* LogRels in devpciR3CommonRestoreConfig.
1001	*/
1002	for (uint32_t uDevFn = 0; uDevFn < RT_ELEMENTS(pBus->apDevices); uDevFn++)
1003	{
1004	PPDMPCIDEV pDev = pBus->apDevices[uDevFn];
1005	if (pDev)
1006	{
1007	uint16_t u16 = PCIDevGetCommand(pDev);
1008	pDev->Int.s.pfnConfigWrite(pDev->Int.s.CTX_SUFF(pDevIns), pDev, VBOX_PCI_COMMAND, 0, 2);
1009	PCIDevSetCommand(pDev, u16);
1010	Assert(PCIDevGetCommand(pDev) == u16);
1011	}
1012	}
1013
1014	/*
1015	* Iterate all the devices.
1016	*/
1017	for (uint32_t uDevFn = 0;; uDevFn++)
1018	{
1019	/* index / terminator */
1020	rc = SSMR3GetU32(pSSM, &u32);
1021	if (RT_FAILURE(rc))
1022	return rc;
1023	if (u32 == UINT32_MAX)
1024	break;
1025	if ( u32 >= RT_ELEMENTS(pBus->apDevices)
1026	\|\| u32 < uDevFn)
1027	{
1028	AssertMsgFailed(("u32=%#x uDevFn=%#x\n", u32, uDevFn));
1029	return rc;
1030	}
1031
1032	/* skip forward to the device checking that no new devices are present. */
1033	for (; uDevFn < u32; uDevFn++)
1034	{
1035	if (pBus->apDevices[uDevFn])
1036	{
1037	LogRel(("PCI: New device in slot %#x, %s (vendor=%#06x device=%#06x)\n", uDevFn, pBus->apDevices[uDevFn]->pszNameR3,
1038	PCIDevGetVendorId(pBus->apDevices[uDevFn]), PCIDevGetDeviceId(pBus->apDevices[uDevFn])));
1039	if (SSMR3HandleGetAfter(pSSM) != SSMAFTER_DEBUG_IT)
1040	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("New device in slot %#x, %s (vendor=%#06x device=%#06x)"),
1041	uDevFn, pBus->apDevices[uDevFn]->pszNameR3, PCIDevGetVendorId(pBus->apDevices[uDevFn]), PCIDevGetDeviceId(pBus->apDevices[uDevFn]));
1042	}
1043	}
1044
1045	/* get the data */
1046	PDMPCIDEV DevTmp;
1047	RT_ZERO(DevTmp);
1048	DevTmp.Int.s.uIrqPinState = ~0; /* Invalid value in case we have an older saved state to force a state change in pciSetIrq. */
1049	SSMR3GetMem(pSSM, DevTmp.abConfig, sizeof(DevTmp.abConfig));
1050	if (uVersion < VBOX_PCI_SAVED_STATE_VERSION_IRQ_STATES)
1051	{
1052	int32_t i32Temp;
1053	/* Irq value not needed anymore. */
1054	rc = SSMR3GetS32(pSSM, &i32Temp);
1055	if (RT_FAILURE(rc))
1056	return rc;
1057	}
1058	else
1059	{
1060	rc = SSMR3GetS32(pSSM, &DevTmp.Int.s.uIrqPinState);
1061	if (RT_FAILURE(rc))
1062	return rc;
1063	}
1064
1065	/* Load the region types and sizes. */
1066	if (uVersion >= VBOX_PCI_SAVED_STATE_VERSION_REGION_SIZES)
1067	{
1068	for (uint32_t iRegion = 0; iRegion < VBOX_PCI_NUM_REGIONS; iRegion++)
1069	{
1070	SSMR3GetU8(pSSM, &DevTmp.Int.s.aIORegions[iRegion].type);
1071	rc = SSMR3GetU64(pSSM, &DevTmp.Int.s.aIORegions[iRegion].size);
1072	AssertLogRelRCReturn(rc, rc);
1073	}
1074	}
1075
1076	/* check that it's still around. */
1077	PPDMPCIDEV pDev = pBus->apDevices[uDevFn];
1078	if (!pDev)
1079	{
1080	LogRel(("PCI: Device in slot %#x has been removed! vendor=%#06x device=%#06x\n", uDevFn,
1081	PCIDevGetVendorId(&DevTmp), PCIDevGetDeviceId(&DevTmp)));
1082	if (SSMR3HandleGetAfter(pSSM) != SSMAFTER_DEBUG_IT)
1083	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Device in slot %#x has been removed! vendor=%#06x device=%#06x"),
1084	uDevFn, PCIDevGetVendorId(&DevTmp), PCIDevGetDeviceId(&DevTmp));
1085	continue;
1086	}
1087
1088	/* match the vendor id assuming that this will never be changed. */
1089	if ( DevTmp.abConfig[0] != pDev->abConfig[0]
1090	\|\| DevTmp.abConfig[1] != pDev->abConfig[1])
1091	return SSMR3SetCfgError(pSSM, RT_SRC_POS,
1092	N_("Device in slot %#x (%s) vendor id mismatch! saved=%.4Rhxs current=%.4Rhxs"),
1093	uDevFn, pDev->pszNameR3, DevTmp.abConfig, pDev->abConfig);
1094
1095	/* commit the loaded device config. */
1096	rc = devpciR3CommonRestoreRegions(pSSM, pDev, DevTmp.Int.s.aIORegions,
1097	uVersion >= VBOX_PCI_SAVED_STATE_VERSION_REGION_SIZES);
1098	if (RT_FAILURE(rc))
1099	break;
1100	devpciR3CommonRestoreConfig(pDev, &DevTmp.abConfig[0]);
1101
1102	pDev->Int.s.uIrqPinState = DevTmp.Int.s.uIrqPinState;
1103	}
1104
1105	return VINF_SUCCESS;
1106	}
1107
1108
1109	/**
1110	* @callback_method_impl{FNSSMDEVLOADEXEC}
1111	*/
1112	static DECLCALLBACK(int) pciR3LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
1113	{
1114	PDEVPCIROOT pThis = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
1115	PDEVPCIBUS pBus = &pThis->PciBus;
1116	uint32_t u32;
1117	int rc;
1118
1119	/*
1120	* Check the version.
1121	*/
1122	if (uVersion > VBOX_PCI_SAVED_STATE_VERSION)
1123	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
1124	Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
1125
1126	/*
1127	* Bus state data.
1128	*/
1129	SSMR3GetU32(pSSM, &pThis->uConfigReg);
1130	if (uVersion >= VBOX_PCI_SAVED_STATE_VERSION_USE_IO_APIC)
1131	SSMR3GetBool(pSSM, &pThis->fUseIoApic);
1132
1133	/* Load IRQ states. */
1134	if (uVersion >= VBOX_PCI_SAVED_STATE_VERSION_IRQ_STATES)
1135	{
1136	for (uint8_t i = 0; i < RT_ELEMENTS(pThis->Piix3.auPciLegacyIrqLevels); i++)
1137	SSMR3GetU32(pSSM, (uint32_t *)&pThis->Piix3.auPciLegacyIrqLevels[i]);
1138	for (uint8_t i = 0; i < RT_ELEMENTS(pThis->auPciApicIrqLevels); i++)
1139	SSMR3GetU32(pSSM, (uint32_t *)&pThis->auPciApicIrqLevels[i]);
1140
1141	SSMR3GetU32(pSSM, &pThis->Piix3.iAcpiIrqLevel);
1142	SSMR3GetS32(pSSM, &pThis->Piix3.iAcpiIrq);
1143	}
1144
1145	/* separator */
1146	rc = SSMR3GetU32(pSSM, &u32);
1147	if (RT_FAILURE(rc))
1148	return rc;
1149	if (u32 != UINT32_MAX)
1150	AssertMsgFailedReturn(("u32=%#x\n", u32), rc);
1151
1152	/*
1153	* The devices.
1154	*/
1155	return pciR3CommonLoadExec(pBus, pSSM, uVersion, uPass);
1156	}
1157
1158
1159	/* -=-=-=-=-=- PCI Bus Interface Methods (PDMPCIBUSREG) -=-=-=-=-=- */
1160
1161
1162	/* -=-=-=-=-=- Debug Info Handlers -=-=-=-=-=- */
1163
1164	/**
1165	* @callback_method_impl{FNDBGFHANDLERDEV}
1166	*/
1167	static DECLCALLBACK(void) pciR3IrqRouteInfo(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs)
1168	{
1169	PDEVPCIROOT pGlobals = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
1170	PPDMPCIDEV pPIIX3 = &pGlobals->Piix3.PIIX3State.dev;
1171	NOREF(pszArgs);
1172
1173	uint16_t router = pPIIX3->uDevFn;
1174	pHlp->pfnPrintf(pHlp, "PCI interrupt router at: %02X:%02X:%X\n",
1175	router >> 8, (router >> 3) & 0x1f, router & 0x7);
1176
1177	for (int i = 0; i < 4; ++i)
1178	{
1179	uint8_t irq_map = devpciR3GetByte(pPIIX3, 0x60 + i);
1180	if (irq_map & 0x80)
1181	pHlp->pfnPrintf(pHlp, "PIRQ%c disabled\n", 'A' + i);
1182	else
1183	pHlp->pfnPrintf(pHlp, "PIRQ%c -> IRQ%d\n", 'A' + i, irq_map & 0xf);
1184	}
1185	}
1186
1187
1188	/* -=-=-=-=-=- PDMDEVREG -=-=-=-=-=- */
1189
1190
1191	/**
1192	* @interface_method_impl{PDMDEVREG,pfnConstruct}
1193	*/
1194	static DECLCALLBACK(int) pciR3Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
1195	{
1196	RT_NOREF1(iInstance);
1197	Assert(iInstance == 0);
1198	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
1199
1200	/*
1201	* Validate and read configuration.
1202	*/
1203	if (!CFGMR3AreValuesValid(pCfg, "IOAPIC\0" "GCEnabled\0" "R0Enabled\0"))
1204	return VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
1205
1206	/* query whether we got an IOAPIC */
1207	bool fUseIoApic;
1208	int rc = CFGMR3QueryBoolDef(pCfg, "IOAPIC", &fUseIoApic, false);
1209	if (RT_FAILURE(rc))
1210	return PDMDEV_SET_ERROR(pDevIns, rc,
1211	N_("Configuration error: Failed to query boolean value \"IOAPIC\""));
1212
1213	/* check if RC code is enabled. */
1214	bool fGCEnabled;
1215	rc = CFGMR3QueryBoolDef(pCfg, "GCEnabled", &fGCEnabled, true);
1216	if (RT_FAILURE(rc))
1217	return PDMDEV_SET_ERROR(pDevIns, rc,
1218	N_("Configuration error: Failed to query boolean value \"GCEnabled\""));
1219
1220	/* check if R0 code is enabled. */
1221	bool fR0Enabled;
1222	rc = CFGMR3QueryBoolDef(pCfg, "R0Enabled", &fR0Enabled, true);
1223	if (RT_FAILURE(rc))
1224	return PDMDEV_SET_ERROR(pDevIns, rc,
1225	N_("Configuration error: Failed to query boolean value \"R0Enabled\""));
1226	Log(("PCI: fUseIoApic=%RTbool fGCEnabled=%RTbool fR0Enabled=%RTbool\n", fUseIoApic, fGCEnabled, fR0Enabled));
1227
1228	/*
1229	* Init data and register the PCI bus.
1230	*/
1231	PDEVPCIROOT pGlobals = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
1232	pGlobals->uPciBiosIo = 0xc000;
1233	pGlobals->uPciBiosMmio = 0xf0000000;
1234	memset((void *)&pGlobals->Piix3.auPciLegacyIrqLevels, 0, sizeof(pGlobals->Piix3.auPciLegacyIrqLevels));
1235	pGlobals->fUseIoApic = fUseIoApic;
1236	memset((void *)&pGlobals->auPciApicIrqLevels, 0, sizeof(pGlobals->auPciApicIrqLevels));
1237
1238	pGlobals->pDevInsR3 = pDevIns;
1239	pGlobals->pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
1240	pGlobals->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
1241
1242	pGlobals->PciBus.fTypePiix3 = true;
1243	pGlobals->PciBus.fTypeIch9 = false;
1244	pGlobals->PciBus.fPureBridge = false;
1245	pGlobals->PciBus.pDevInsR3 = pDevIns;
1246	pGlobals->PciBus.pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
1247	pGlobals->PciBus.pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
1248	pGlobals->PciBus.papBridgesR3 = (PPDMPCIDEV *)PDMDevHlpMMHeapAllocZ(pDevIns,
1249	sizeof(PPDMPCIDEV)
1250	* RT_ELEMENTS(pGlobals->PciBus.apDevices));
1251	AssertLogRelReturn(pGlobals->PciBus.papBridgesR3, VERR_NO_MEMORY);
1252
1253
1254	PDMPCIBUSREG PciBusReg;
1255	PDEVPCIBUS pBus = &pGlobals->PciBus;
1256	PciBusReg.u32Version = PDM_PCIBUSREG_VERSION;
1257	PciBusReg.pfnRegisterR3 = pciR3MergedRegister;
1258	PciBusReg.pfnRegisterMsiR3 = NULL;
1259	PciBusReg.pfnIORegionRegisterR3 = devpciR3CommonIORegionRegister;
1260	PciBusReg.pfnSetConfigCallbacksR3 = devpciR3CommonSetConfigCallbacks;
1261	PciBusReg.pfnSetIrqR3 = pciSetIrq;
1262	PciBusReg.pszSetIrqRC = fGCEnabled ? "pciSetIrq" : NULL;
1263	PciBusReg.pszSetIrqR0 = fR0Enabled ? "pciSetIrq" : NULL;
1264	#if PDM_DEVHLPR3_VERSION >= PDM_VERSION_MAKE_PP(0xffe7, 20, 0)
1265	rc = PDMDevHlpPCIBusRegister(pDevIns, &PciBusReg, &pBus->pPciHlpR3, &pBus->iBus);
1266	#else
1267	rc = PDMDevHlpPCIBusRegister(pDevIns, &PciBusReg, &pBus->pPciHlpR3);
1268	pBus->iBus = rc;
1269	#endif
1270	if (RT_FAILURE(rc))
1271	return PDMDEV_SET_ERROR(pDevIns, rc,
1272	N_("Failed to register ourselves as a PCI Bus"));
1273	Assert(pBus->iBus == 0);
1274	if (pBus->pPciHlpR3->u32Version != PDM_PCIHLPR3_VERSION)
1275	return PDMDevHlpVMSetError(pDevIns, VERR_VERSION_MISMATCH, RT_SRC_POS,
1276	N_("PCI helper version mismatch; got %#x expected %#x"),
1277	pBus->pPciHlpR3->u32Version, PDM_PCIHLPR3_VERSION);
1278
1279	pBus->pPciHlpRC = pBus->pPciHlpR3->pfnGetRCHelpers(pDevIns);
1280	pBus->pPciHlpR0 = pBus->pPciHlpR3->pfnGetR0Helpers(pDevIns);
1281
1282	/* Disable default device locking. */
1283	rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns));
1284	AssertRCReturn(rc, rc);
1285
1286	/*
1287	* Fill in PCI configs and add them to the bus.
1288	*/
1289	/* i440FX */
1290	PCIDevSetVendorId( &pBus->PciDev, 0x8086); /* Intel */
1291	PCIDevSetDeviceId( &pBus->PciDev, 0x1237);
1292	PCIDevSetRevisionId(&pBus->PciDev, 0x02);
1293	PCIDevSetClassSub( &pBus->PciDev, 0x00); /* host2pci */
1294	PCIDevSetClassBase( &pBus->PciDev, 0x06); /* PCI_bridge */
1295	PCIDevSetHeaderType(&pBus->PciDev, 0x00);
1296	rc = PDMDevHlpPCIRegisterEx(pDevIns, &pBus->PciDev, PDMPCIDEVREG_CFG_PRIMARY, 0 /fFlags/,
1297	0 /uPciDevNo/, 0 /uPciFunNo/, "i440FX");
1298	AssertLogRelRCReturn(rc, rc);
1299
1300	/* PIIX3 */
1301	PCIDevSetVendorId( &pGlobals->Piix3.PIIX3State.dev, 0x8086); /* Intel */
1302	PCIDevSetDeviceId( &pGlobals->Piix3.PIIX3State.dev, 0x7000); /* 82371SB PIIX3 PCI-to-ISA bridge (Step A1) */
1303	PCIDevSetClassSub( &pGlobals->Piix3.PIIX3State.dev, 0x01); /* PCI_ISA */
1304	PCIDevSetClassBase( &pGlobals->Piix3.PIIX3State.dev, 0x06); /* PCI_bridge */
1305	PCIDevSetHeaderType(&pGlobals->Piix3.PIIX3State.dev, 0x80); /* PCI_multifunction, generic */
1306	rc = PDMDevHlpPCIRegisterEx(pDevIns, &pGlobals->Piix3.PIIX3State.dev, PDMPCIDEVREG_CFG_NEXT, 0 /fFlags/,
1307	1 /uPciDevNo/, 0 /uPciFunNo/, "PIIX3");
1308	AssertLogRelRCReturn(rc, rc);
1309	pciR3Piix3Reset(&pGlobals->Piix3.PIIX3State);
1310
1311	pBus->iDevSearch = 16;
1312
1313	/*
1314	* Register I/O ports and save state.
1315	*/
1316	rc = PDMDevHlpIOPortRegister(pDevIns, 0x0cf8, 1, NULL, pciIOPortAddressWrite, pciIOPortAddressRead, NULL, NULL, "i440FX (PCI)");
1317	if (RT_FAILURE(rc))
1318	return rc;
1319	rc = PDMDevHlpIOPortRegister(pDevIns, 0x0cfc, 4, NULL, pciIOPortDataWrite, pciIOPortDataRead, NULL, NULL, "i440FX (PCI)");
1320	if (RT_FAILURE(rc))
1321	return rc;
1322	if (fGCEnabled)
1323	{
1324	rc = PDMDevHlpIOPortRegisterRC(pDevIns, 0x0cf8, 1, NIL_RTGCPTR, "pciIOPortAddressWrite", "pciIOPortAddressRead", NULL, NULL, "i440FX (PCI)");
1325	if (RT_FAILURE(rc))
1326	return rc;
1327	rc = PDMDevHlpIOPortRegisterRC(pDevIns, 0x0cfc, 4, NIL_RTGCPTR, "pciIOPortDataWrite", "pciIOPortDataRead", NULL, NULL, "i440FX (PCI)");
1328	if (RT_FAILURE(rc))
1329	return rc;
1330	}
1331	if (fR0Enabled)
1332	{
1333	rc = PDMDevHlpIOPortRegisterR0(pDevIns, 0x0cf8, 1, NIL_RTR0PTR, "pciIOPortAddressWrite", "pciIOPortAddressRead", NULL, NULL, "i440FX (PCI)");
1334	if (RT_FAILURE(rc))
1335	return rc;
1336	rc = PDMDevHlpIOPortRegisterR0(pDevIns, 0x0cfc, 4, NIL_RTR0PTR, "pciIOPortDataWrite", "pciIOPortDataRead", NULL, NULL, "i440FX (PCI)");
1337	if (RT_FAILURE(rc))
1338	return rc;
1339	}
1340
1341	rc = PDMDevHlpIOPortRegister(pDevIns, 0x0410, 1, NULL, pciR3IOPortMagicPCIWrite, pciR3IOPortMagicPCIRead, NULL, NULL, "i440FX (Fake PCI BIOS trigger)")
1342	;
1343	if (RT_FAILURE(rc))
1344	return rc;
1345
1346
1347	rc = PDMDevHlpSSMRegisterEx(pDevIns, VBOX_PCI_SAVED_STATE_VERSION, sizeof(pBus) + 16128, "pgm",
1348	NULL, NULL, NULL,
1349	NULL, pciR3SaveExec, NULL,
1350	NULL, pciR3LoadExec, NULL);
1351	if (RT_FAILURE(rc))
1352	return rc;
1353
1354	PDMDevHlpDBGFInfoRegister(pDevIns, "pci",
1355	"Display PCI bus status. Recognizes 'basic' or 'verbose' as arguments, defaults to 'basic'.",
1356	devpciR3InfoPci);
1357	PDMDevHlpDBGFInfoRegister(pDevIns, "pciirq", "Display PCI IRQ state. (no arguments)", devpciR3InfoPciIrq);
1358	PDMDevHlpDBGFInfoRegister(pDevIns, "irqroute", "Display PCI IRQ routing. (no arguments)", pciR3IrqRouteInfo);
1359
1360	return VINF_SUCCESS;
1361	}
1362
1363
1364	/**
1365	* @interface_method_impl{PDMDEVREG,pfnDestruct}
1366	*/
1367	static DECLCALLBACK(int) pciR3Destruct(PPDMDEVINS pDevIns)
1368	{
1369	PDEVPCIROOT pGlobals = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
1370	if (pGlobals->PciBus.papBridgesR3)
1371	{
1372	PDMDevHlpMMHeapFree(pDevIns, pGlobals->PciBus.papBridgesR3);
1373	pGlobals->PciBus.papBridgesR3 = NULL;
1374	}
1375	return VINF_SUCCESS;
1376	}
1377
1378
1379	/**
1380	* @interface_method_impl{PDMDEVREG,pfnReset}
1381	*/
1382	static DECLCALLBACK(void) pciR3Reset(PPDMDEVINS pDevIns)
1383	{
1384	PDEVPCIROOT pGlobals = PDMINS_2_DATA(pDevIns, PDEVPCIROOT);
1385	PDEVPCIBUS pBus = &pGlobals->PciBus;
1386
1387	/* PCI-specific reset for each device. */
1388	for (uint32_t uDevFn = 0; uDevFn < RT_ELEMENTS(pBus->apDevices); uDevFn++)
1389	{
1390	if (pBus->apDevices[uDevFn])
1391	devpciR3ResetDevice(pBus->apDevices[uDevFn]);
1392	}
1393
1394	pciR3Piix3Reset(&pGlobals->Piix3.PIIX3State);
1395	}
1396
1397
1398	/**
1399	* The device registration structure.
1400	*/
1401	const PDMDEVREG g_DevicePCI =
1402	{
1403	/* u32Version */
1404	PDM_DEVREG_VERSION,
1405	/* szName */
1406	"pci",
1407	/* szRCMod */
1408	"VBoxDDRC.rc",
1409	/* szR0Mod */
1410	"VBoxDDR0.r0",
1411	/* pszDescription */
1412	"i440FX PCI bridge and PIIX3 ISA bridge.",
1413	/* fFlags */
1414	PDM_DEVREG_FLAGS_DEFAULT_BITS \| PDM_DEVREG_FLAGS_RC \| PDM_DEVREG_FLAGS_R0,
1415	/* fClass */
1416	PDM_DEVREG_CLASS_BUS_PCI \| PDM_DEVREG_CLASS_BUS_ISA,
1417	/* cMaxInstances */
1418	1,
1419	/* cbInstance */
1420	sizeof(DEVPCIROOT),
1421	/* pfnConstruct */
1422	pciR3Construct,
1423	/* pfnDestruct */
1424	pciR3Destruct,
1425	/* pfnRelocate */
1426	devpciR3RootRelocate,
1427	/* pfnMemSetup */
1428	NULL,
1429	/* pfnPowerOn */
1430	NULL,
1431	/* pfnReset */
1432	pciR3Reset,
1433	/* pfnSuspend */
1434	NULL,
1435	/* pfnResume */
1436	NULL,
1437	/* pfnAttach */
1438	NULL,
1439	/* pfnDetach */
1440	NULL,
1441	/* pfnQueryInterface */
1442	NULL,
1443	/* pfnInitComplete */
1444	NULL,
1445	/* pfnPowerOff */
1446	NULL,
1447	/* pfnSoftReset */
1448	NULL,
1449	/* u32VersionEnd */
1450	PDM_DEVREG_VERSION
1451
1452	};
1453	#endif /* IN_RING3 */
1454
1455
1456
1457	/* -=-=-=-=-=- The PCI bridge specific bits -=-=-=-=-=- */
1458
1459	/**
1460	* @interface_method_impl{PDMPCIBUSREG,pfnSetIrqR3}
1461	*/
1462	PDMBOTHCBDECL(void) pcibridgeSetIrq(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev, int iIrq, int iLevel, uint32_t uTagSrc)
1463	{
1464	/*
1465	* The PCI-to-PCI bridge specification defines how the interrupt pins
1466	* are routed from the secondary to the primary bus (see chapter 9).
1467	* iIrq gives the interrupt pin the pci device asserted.
1468	* We change iIrq here according to the spec and call the SetIrq function
1469	* of our parent passing the device which asserted the interrupt instead of the device of the bridge.
1470	*/
1471	PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS);
1472	PPDMPCIDEV pPciDevBus = pPciDev;
1473	int iIrqPinBridge = iIrq;
1474	uint8_t uDevFnBridge = 0;
1475
1476	/* Walk the chain until we reach the host bus. */
1477	do
1478	{
1479	uDevFnBridge = pBus->PciDev.uDevFn;
1480	iIrqPinBridge = ((pPciDevBus->uDevFn >> 3) + iIrqPinBridge) & 3;
1481
1482	/* Get the parent. */
1483	pBus = pBus->PciDev.Int.s.CTX_SUFF(pBus);
1484	pPciDevBus = &pBus->PciDev;
1485	} while (pBus->iBus != 0);
1486
1487	AssertMsg(pBus->iBus == 0, ("This is not the host pci bus iBus=%d\n", pBus->iBus));
1488	pciSetIrqInternal(DEVPCIBUS_2_DEVPCIROOT(pBus), uDevFnBridge, pPciDev, iIrqPinBridge, iLevel, uTagSrc);
1489	}
1490
1491	#ifdef IN_RING3
1492
1493	/**
1494	* @callback_method_impl{FNPCIBRIDGECONFIGWRITE}
1495	*/
1496	static DECLCALLBACK(void) pcibridgeR3ConfigWrite(PPDMDEVINSR3 pDevIns, uint8_t iBus, uint8_t iDevice, uint32_t u32Address, uint32_t u32Value, unsigned cb)
1497	{
1498	PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS);
1499
1500	LogFlowFunc(("pDevIns=%p iBus=%d iDevice=%d u32Address=%u u32Value=%u cb=%d\n", pDevIns, iBus, iDevice, u32Address, u32Value, cb));
1501
1502	/* If the current bus is not the target bus search for the bus which contains the device. */
1503	if (iBus != pBus->PciDev.abConfig[VBOX_PCI_SECONDARY_BUS])
1504	{
1505	PPDMPCIDEV pBridgeDevice = pciR3FindBridge(pBus, iBus);
1506	if (pBridgeDevice)
1507	{
1508	AssertPtr(pBridgeDevice->Int.s.pfnBridgeConfigWrite);
1509	pBridgeDevice->Int.s.pfnBridgeConfigWrite(pBridgeDevice->Int.s.CTX_SUFF(pDevIns), iBus, iDevice, u32Address, u32Value, cb);
1510	}
1511	}
1512	else
1513	{
1514	/* This is the target bus, pass the write to the device. */
1515	PPDMPCIDEV pPciDev = pBus->apDevices[iDevice];
1516	if (pPciDev)
1517	{
1518	LogFunc(("%s: addr=%02x val=%08x len=%d\n", pPciDev->pszNameR3, u32Address, u32Value, cb));
1519	pPciDev->Int.s.pfnConfigWrite(pPciDev->Int.s.CTX_SUFF(pDevIns), pPciDev, u32Address, u32Value, cb);
1520	}
1521	}
1522	}
1523
1524
1525	/**
1526	* @callback_method_impl{FNPCIBRIDGECONFIGREAD}
1527	*/
1528	static DECLCALLBACK(uint32_t) pcibridgeR3ConfigRead(PPDMDEVINSR3 pDevIns, uint8_t iBus, uint8_t iDevice, uint32_t u32Address, unsigned cb)
1529	{
1530	PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS);
1531	uint32_t u32Value = 0xffffffff; /* Return value in case there is no device. */
1532
1533	LogFlowFunc(("pDevIns=%p iBus=%d iDevice=%d u32Address=%u cb=%d\n", pDevIns, iBus, iDevice, u32Address, cb));
1534
1535	/* If the current bus is not the target bus search for the bus which contains the device. */
1536	if (iBus != pBus->PciDev.abConfig[VBOX_PCI_SECONDARY_BUS])
1537	{
1538	PPDMPCIDEV pBridgeDevice = pciR3FindBridge(pBus, iBus);
1539	if (pBridgeDevice)
1540	{
1541	AssertPtr( pBridgeDevice->Int.s.pfnBridgeConfigRead);
1542	u32Value = pBridgeDevice->Int.s.pfnBridgeConfigRead(pBridgeDevice->Int.s.CTX_SUFF(pDevIns), iBus, iDevice, u32Address, cb);
1543	}
1544	}
1545	else
1546	{
1547	/* This is the target bus, pass the read to the device. */
1548	PPDMPCIDEV pPciDev = pBus->apDevices[iDevice];
1549	if (pPciDev)
1550	{
1551	u32Value = pPciDev->Int.s.pfnConfigRead(pPciDev->Int.s.CTX_SUFF(pDevIns), pPciDev, u32Address, cb);
1552	LogFunc(("%s: u32Address=%02x u32Value=%08x cb=%d\n", pPciDev->pszNameR3, u32Address, u32Value, cb));
1553	}
1554	}
1555
1556	return u32Value;
1557	}
1558
1559
1560	/**
1561	* @callback_method_impl{FNSSMDEVSAVEEXEC}
1562	*/
1563	static DECLCALLBACK(int) pcibridgeR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1564	{
1565	PDEVPCIBUS pThis = PDMINS_2_DATA(pDevIns, PDEVPCIBUS);
1566	return pciR3CommonSaveExec(pThis, pSSM);
1567	}
1568
1569
1570	/**
1571	* @callback_method_impl{FNSSMDEVLOADEXEC}
1572	*/
1573	static DECLCALLBACK(int) pcibridgeR3LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
1574	{
1575	PDEVPCIBUS pThis = PDMINS_2_DATA(pDevIns, PDEVPCIBUS);
1576	if (uVersion > VBOX_PCI_SAVED_STATE_VERSION)
1577	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
1578	return pciR3CommonLoadExec(pThis, pSSM, uVersion, uPass);
1579	}
1580
1581
1582	/**
1583	* @interface_method_impl{PDMDEVREG,pfnReset}
1584	*/
1585	static DECLCALLBACK(void) pcibridgeR3Reset(PPDMDEVINS pDevIns)
1586	{
1587	PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS);
1588
1589	/* Reset config space to default values. */
1590	pBus->PciDev.abConfig[VBOX_PCI_PRIMARY_BUS] = 0;
1591	pBus->PciDev.abConfig[VBOX_PCI_SECONDARY_BUS] = 0;
1592	pBus->PciDev.abConfig[VBOX_PCI_SUBORDINATE_BUS] = 0;
1593	}
1594
1595
1596	/**
1597	* @interface_method_impl{PDMDEVREG,pfnConstruct}
1598	*/
1599	static DECLCALLBACK(int) pcibridgeR3Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
1600	{
1601	RT_NOREF(iInstance);
1602	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
1603
1604	/*
1605	* Validate and read configuration.
1606	*/
1607	if (!CFGMR3AreValuesValid(pCfg, "GCEnabled\0" "R0Enabled\0"))
1608	return VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
1609
1610	/* check if RC code is enabled. */
1611	bool fGCEnabled;
1612	int rc = CFGMR3QueryBoolDef(pCfg, "GCEnabled", &fGCEnabled, true);
1613	if (RT_FAILURE(rc))
1614	return PDMDEV_SET_ERROR(pDevIns, rc,
1615	N_("Configuration error: Failed to query boolean value \"GCEnabled\""));
1616
1617	/* check if R0 code is enabled. */
1618	bool fR0Enabled;
1619	rc = CFGMR3QueryBoolDef(pCfg, "R0Enabled", &fR0Enabled, true);
1620	if (RT_FAILURE(rc))
1621	return PDMDEV_SET_ERROR(pDevIns, rc,
1622	N_("Configuration error: Failed to query boolean value \"R0Enabled\""));
1623	Log(("PCI: fGCEnabled=%RTbool fR0Enabled=%RTbool\n", fGCEnabled, fR0Enabled));
1624
1625	/*
1626	* Init data and register the PCI bus.
1627	*/
1628	PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS);
1629	pBus->fTypePiix3 = true;
1630	pBus->fTypeIch9 = false;
1631	pBus->fPureBridge = true;
1632	pBus->pDevInsR3 = pDevIns;
1633	pBus->pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
1634	pBus->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
1635	pBus->papBridgesR3 = (PPDMPCIDEV )PDMDevHlpMMHeapAllocZ(pDevIns, sizeof(PPDMPCIDEV) RT_ELEMENTS(pBus->apDevices));
1636	AssertLogRelReturn(pBus->papBridgesR3, VERR_NO_MEMORY);
1637
1638	PDMPCIBUSREG PciBusReg;
1639	PciBusReg.u32Version = PDM_PCIBUSREG_VERSION;
1640	PciBusReg.pfnRegisterR3 = pcibridgeR3MergedRegisterDevice;
1641	PciBusReg.pfnRegisterMsiR3 = NULL;
1642	PciBusReg.pfnIORegionRegisterR3 = devpciR3CommonIORegionRegister;
1643	PciBusReg.pfnSetConfigCallbacksR3 = devpciR3CommonSetConfigCallbacks;
1644	PciBusReg.pfnSetIrqR3 = pcibridgeSetIrq;
1645	PciBusReg.pszSetIrqRC = fGCEnabled ? "pcibridgeSetIrq" : NULL;
1646	PciBusReg.pszSetIrqR0 = fR0Enabled ? "pcibridgeSetIrq" : NULL;
1647	#if PDM_DEVHLPR3_VERSION >= PDM_VERSION_MAKE_PP(0xffe7, 20, 0)
1648	rc = PDMDevHlpPCIBusRegister(pDevIns, &PciBusReg, &pBus->pPciHlpR3, &pBus->iBus);
1649	#else
1650	rc = PDMDevHlpPCIBusRegister(pDevIns, &PciBusReg, &pBus->pPciHlpR3);
1651	pBus->iBus = rc;
1652	#endif
1653	if (RT_FAILURE(rc))
1654	return PDMDEV_SET_ERROR(pDevIns, rc,
1655	N_("Failed to register ourselves as a PCI Bus"));
1656	Assert(pBus->iBus == (uint32_t)iInstance + 1); /* Can be removed when adding support for multiple bridge implementations. */
1657	if (pBus->pPciHlpR3->u32Version != PDM_PCIHLPR3_VERSION)
1658	return PDMDevHlpVMSetError(pDevIns, VERR_VERSION_MISMATCH, RT_SRC_POS,
1659	N_("PCI helper version mismatch; got %#x expected %#x"),
1660	pBus->pPciHlpR3->u32Version, PDM_PCIHLPR3_VERSION);
1661
1662	pBus->pPciHlpRC = pBus->pPciHlpR3->pfnGetRCHelpers(pDevIns);
1663	pBus->pPciHlpR0 = pBus->pPciHlpR3->pfnGetR0Helpers(pDevIns);
1664
1665	/*
1666	* Fill in PCI configs and add them to the bus.
1667	*/
1668	PCIDevSetVendorId( &pBus->PciDev, 0x8086); /* Intel */
1669	PCIDevSetDeviceId( &pBus->PciDev, 0x2448); /* 82801 Mobile PCI bridge. */
1670	PCIDevSetRevisionId(&pBus->PciDev, 0xf2);
1671	PCIDevSetClassSub( &pBus->PciDev, 0x04); /* pci2pci */
1672	PCIDevSetClassBase( &pBus->PciDev, 0x06); /* PCI_bridge */
1673	PCIDevSetClassProg( &pBus->PciDev, 0x01); /* Supports subtractive decoding. */
1674	PCIDevSetHeaderType(&pBus->PciDev, 0x01); /* Single function device which adheres to the PCI-to-PCI bridge spec. */
1675	PCIDevSetCommand( &pBus->PciDev, 0x0000);
1676	PCIDevSetStatus( &pBus->PciDev, 0x0020); /* 66MHz Capable. */
1677	PCIDevSetInterruptLine(&pBus->PciDev, 0x00); /* This device does not assert interrupts. */
1678
1679	/*
1680	* This device does not generate interrupts. Interrupt delivery from
1681	* devices attached to the bus is unaffected.
1682	*/
1683	PCIDevSetInterruptPin(&pBus->PciDev, 0x00);
1684
1685	/*
1686	* Register this PCI bridge. The called function will take care on which bus we will get registered.
1687	*/
1688	rc = PDMDevHlpPCIRegisterEx(pDevIns, &pBus->PciDev, PDMPCIDEVREG_CFG_PRIMARY, PDMPCIDEVREG_F_PCI_BRIDGE,
1689	PDMPCIDEVREG_DEV_NO_FIRST_UNUSED, PDMPCIDEVREG_FUN_NO_FIRST_UNUSED, "pcibridge");
1690	if (RT_FAILURE(rc))
1691	return rc;
1692	pBus->PciDev.Int.s.pfnBridgeConfigRead = pcibridgeR3ConfigRead;
1693	pBus->PciDev.Int.s.pfnBridgeConfigWrite = pcibridgeR3ConfigWrite;
1694
1695	pBus->iDevSearch = 0;
1696
1697	/*
1698	* Register SSM handlers. We use the same saved state version as for the host bridge
1699	* to make changes easier.
1700	*/
1701	rc = PDMDevHlpSSMRegisterEx(pDevIns, VBOX_PCI_SAVED_STATE_VERSION, sizeof(pBus) + 16128, "pgm",
1702	NULL, NULL, NULL,
1703	NULL, pcibridgeR3SaveExec, NULL,
1704	NULL, pcibridgeR3LoadExec, NULL);
1705	if (RT_FAILURE(rc))
1706	return rc;
1707
1708	return VINF_SUCCESS;
1709	}
1710
1711
1712	/**
1713	* @interface_method_impl{PDMDEVREG,pfnDestruct}
1714	*/
1715	static DECLCALLBACK(int) pcibridgeR3Destruct(PPDMDEVINS pDevIns)
1716	{
1717	PDEVPCIBUS pBus = PDMINS_2_DATA(pDevIns, PDEVPCIBUS);
1718	if (pBus->papBridgesR3)
1719	{
1720	PDMDevHlpMMHeapFree(pDevIns, pBus->papBridgesR3);
1721	pBus->papBridgesR3 = NULL;
1722	}
1723	return VINF_SUCCESS;
1724	}
1725
1726
1727	/**
1728	* The device registration structure
1729	* for the PCI-to-PCI bridge.
1730	*/
1731	const PDMDEVREG g_DevicePCIBridge =
1732	{
1733	/* u32Version */
1734	PDM_DEVREG_VERSION,
1735	/* szName */
1736	"pcibridge",
1737	/* szRCMod */
1738	"VBoxDDRC.rc",
1739	/* szR0Mod */
1740	"VBoxDDR0.r0",
1741	/* pszDescription */
1742	"82801 Mobile PCI to PCI bridge",
1743	/* fFlags */
1744	PDM_DEVREG_FLAGS_DEFAULT_BITS \| PDM_DEVREG_FLAGS_RC \| PDM_DEVREG_FLAGS_R0,
1745	/* fClass */
1746	PDM_DEVREG_CLASS_BUS_PCI,
1747	/* cMaxInstances */
1748	~0U,
1749	/* cbInstance */
1750	sizeof(DEVPCIBUS),
1751	/* pfnConstruct */
1752	pcibridgeR3Construct,
1753	/* pfnDestruct */
1754	pcibridgeR3Destruct,
1755	/* pfnRelocate */
1756	devpciR3BusRelocate,
1757	/* pfnMemSetup */
1758	NULL,
1759	/* pfnPowerOn */
1760	NULL,
1761	/* pfnReset */
1762	pcibridgeR3Reset,
1763	/* pfnSuspend */
1764	NULL,
1765	/* pfnResume */
1766	NULL,
1767	/* pfnAttach */
1768	NULL,
1769	/* pfnDetach */
1770	NULL,
1771	/* pfnQueryInterface */
1772	NULL,
1773	/* pfnInitComplete */
1774	NULL,
1775	/* pfnPowerOff */
1776	NULL,
1777	/* pfnSoftReset */
1778	NULL,
1779	/* u32VersionEnd */
1780	PDM_DEVREG_VERSION
1781	};
1782
1783	#endif /* IN_RING3 */
1784

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source: vbox/trunk/src/VBox/Devices/Bus/DevPCI.cpp@ 67815

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