DevPCI.cpp@ 95

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1	/** @file
2	*
3	* PCI Device.
4	*/
5
6	/*
7	* Copyright (C) 2006 InnoTek Systemberatung GmbH
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 as published by the Free Software Foundation,
13	* in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
14	* distribution. VirtualBox OSE is distributed in the hope that it will
15	* be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* If you received this file as part of a commercial VirtualBox
18	* distribution, then only the terms of your commercial VirtualBox
19	* license agreement apply instead of the previous paragraph.
20	*
21	* --------------------------------------------------------------------
22	*
23	* This code is based on:
24	*
25	* QEMU PCI bus manager
26	*
27	* Copyright (c) 2004 Fabrice Bellard
28	*
29	* Permission is hereby granted, free of charge, to any person obtaining a copy
30	* of this software and associated documentation files (the "Software"), to deal
31	* in the Software without restriction, including without limitation the rights
32	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
33	* copies of the Software, and to permit persons to whom the Software is
34	* furnished to do so, subject to the following conditions:
35	*
36	* The above copyright notice and this permission notice shall be included in
37	* all copies or substantial portions of the Software.
38	*
39	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
40	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
41	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
42	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
43	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
44	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
45	* THE SOFTWARE.
46	*/
47
48	/*******************************************************************************
49	* Header Files *
50	*******************************************************************************/
51	#define LOG_GROUP LOG_GROUP_DEV_PCI
52	/* Hack to get PCIDEVICEINT declare at the right point - include "PCIInternal.h". */
53	#define PCI_INCLUDE_PRIVATE
54	#include "vl_vbox.h"
55	#include <VBox/pci.h>
56	#include <VBox/pdm.h>
57	#include <VBox/err.h>
58
59	#include <VBox/log.h>
60	#include <iprt/assert.h>
61
62	#include "Builtins.h"
63
64
65	/*******************************************************************************
66	* Defined Constants And Macros *
67	*******************************************************************************/
68	/** @def PCI_LOCK
69	* Acquires the PDM lock. This is a NOP if locking is disabled. */
70	/** @def PCI_UNLOCK
71	* Releases the PDM lock. This is a NOP if locking is disabled. */
72	#ifdef VBOX_WITH_PDM_LOCK
73	# define PCI_LOCK(pDevIns, rc) \
74	do { \
75	int rc2 = PDMINS2DATA(pDevIns, PCIBus *)->CTXALLSUFF(pPciHlp)->pfnLock((pDevIns), rc); \
76	if (rc2 != VINF_SUCCESS) \
77	return rc2; \
78	} while (0)
79	# define PCI_UNLOCK(pDevIns) \
80	PDMINS2DATA(pDevIns, PCIBus *)->CTXALLSUFF(pPciHlp)->pfnUnlock(pDevIns)
81	#else /* !VBOX_WITH_PDM_LOCK */
82	# define PCI_LOCK(pThis, rc) do { } while (0)
83	# define PCI_UNLOCK(pThis) do { } while (0)
84	#endif /* !VBOX_WITH_PDM_LOCK */
85
86
87	/*******************************************************************************
88	* Structures and Typedefs *
89	*******************************************************************************/
90	/**
91	* PIIX3 ISA Bridge state.
92	*/
93	typedef struct PIIX3State
94	{
95	/** The PCI device of the bridge. */
96	PCIDEVICE dev;
97	} PIIX3State, PIIX3, *PPIIX3;
98
99
100	/** Maximum number of PCI devices.
101	* Defined like this to make interrupt handling simple. */
102	#define PCI_DEVICES_MAX 64
103	/** Number of uint32_t entries needed make a bitmask of the interrupts. */
104	#define PCI_IRQ_WORDS ((PCI_DEVICES_MAX + 31) / 32)
105
106	/**
107	* PCI Globals.
108	*
109	* @remark
110	* These are currently put in the PCIBus structure since we've
111	* only got one PCI bus in the current VM configurations. This
112	* makes life somewhat simpler in GC.
113	*/
114	typedef struct PCIGLOBALS
115	{
116	/** The base address for PCI assigned MMIO addresses. */
117	RTGCPHYS pci_mem_base;
118	/** The next I/O port address which the PCI BIOS will use. */
119	uint32_t pci_bios_io_addr;
120	/** The next MMIO address which the PCI BIOS will use. */
121	uint32_t pci_bios_mem_addr;
122	/** Irq levels for the four PCI Irqs. */
123	uint32_t pci_irq_levels[4][PCI_IRQ_WORDS];
124	/** I/O APIC usage flag */
125	bool fUseIoApic;
126	/** I/O APIC irq levels */
127	uint32_t pci_apic_irq_levels[8][PCI_IRQ_WORDS];
128	/** ACPI IRQ level */
129	uint32_t acpi_irq_level;
130	/** ACPI PIC IRQ */
131	int acpi_irq;
132	} PCIGLOBALS;
133	/** Pointer to per VM data. */
134	typedef PCIGLOBALS *PPCIGLOBALS;
135
136
137	/**
138	* PCI Bus instance.
139	*/
140	typedef struct PCIBus
141	{
142	/** IRQ index */
143	uint32_t uIrqIndex;
144	/** Bus number. */
145	int32_t iBus;
146	/** Start device number. */
147	int32_t iDevSearch;
148	/** Config register. */
149	uint32_t uConfigReg;
150	/** Array of PCI devices. */
151	PPCIDEVICE devices[256];
152
153	/** HC pointer to the device instance. */
154	PPDMDEVINSHC pDevInsHC;
155	/** Pointer to the PCI R3 helpers. */
156	PCPDMPCIHLPR3 pPciHlpR3;
157
158	/** GC pointer to the device instance. */
159	PPDMDEVINSGC pDevInsGC;
160	/** Pointer to the PCI GC helpers. */
161	PCPDMPCIHLPGC pPciHlpGC;
162	/** Pointer to the PCI R0 helpers. */
163	PCPDMPCIHLPR0 pPciHlpR0;
164
165	/** The PCI device for the PCI bridge. */
166	PCIDEVICE PciDev;
167	/** ISA bridge state. */
168	PIIX3 PIIX3State;
169	/** The global data.
170	* Since we've only got one bus at present, we put it here to keep things simple. */
171	PCIGLOBALS Globals;
172	} PCIBUS;
173	/** Pointer to a PCIBUS instance. */
174	typedef PCIBUS *PPCIBUS;
175	typedef PCIBUS PCIBus;
176
177
178	/** Converts a bus instance pointer to a device instance pointer. */
179	#define PCIBUS2DEVINS(pPciBus) ((pPciBus)->CTXSUFF(pDevIns))
180	/** Converts a device instance pointer to a PCIGLOBALS pointer. */
181	#define DEVINS2PCIGLOBALS(pDevIns) ((PPCIGLOBALS)(&PDMINS2DATA(pDevIns, PPCIBUS)->Globals))
182	/** Converts a bus instance pointer to a PCIGLOBALS pointer. */
183	#define PCIBUS2PCIGLOBALS(pPciBus) ((PPCIGLOBALS)(&pPciBus->Globals))
184
185
186	/*******************************************************************************
187	* Internal Functions *
188	*******************************************************************************/
189	__BEGIN_DECLS
190
191	PDMBOTHCBDECL(void) pciSetIrq(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, int iIrq, int iLevel);
192
193	__END_DECLS
194
195
196	#define DEBUG_PCI
197
198	#define PCI_VENDOR_ID 0x00 /* 16 bits */
199	#define PCI_DEVICE_ID 0x02 /* 16 bits */
200	#define PCI_COMMAND 0x04 /* 16 bits */
201	#define PCI_COMMAND_IO 0x1 /* Enable response in I/O space */
202	#define PCI_COMMAND_MEMORY 0x2 /* Enable response in Memory space */
203	#define PCI_CLASS_DEVICE 0x0a /* Device class */
204	#define PCI_INTERRUPT_LINE 0x3c /* 8 bits */
205	#define PCI_INTERRUPT_PIN 0x3d /* 8 bits */
206	#define PCI_MIN_GNT 0x3e /* 8 bits */
207	#define PCI_MAX_LAT 0x3f /* 8 bits */
208
209	#ifdef IN_RING3
210
211	static void pci_addr_writel(PCIBus *s, uint32_t addr, uint32_t val)
212	{
213	s->uConfigReg = val;
214	}
215
216	static uint32_t pci_addr_readl(PCIBus *s, uint32_t addr)
217	{
218	return s->uConfigReg;
219	}
220
221	static void pci_update_mappings(PCIDevice *d)
222	{
223	PCIIORegion *r;
224	int cmd, i;
225	uint32_t last_addr, new_addr, config_ofs;
226
227	cmd = le16_to_cpu((uint16_t )(d->config + PCI_COMMAND));
228	for(i = 0; i < PCI_NUM_REGIONS; i++) {
229	r = &d->Int.s.aIORegions[i];
230	if (i == PCI_ROM_SLOT) {
231	config_ofs = 0x30;
232	} else {
233	config_ofs = 0x10 + i * 4;
234	}
235	if (r->size != 0) {
236	if (r->type & PCI_ADDRESS_SPACE_IO) {
237	if (cmd & PCI_COMMAND_IO) {
238	new_addr = le32_to_cpu((uint32_t )(d->config +
239	config_ofs));
240	new_addr = new_addr & ~(r->size - 1);
241	last_addr = new_addr + r->size - 1;
242	/* NOTE: we have only 64K ioports on PC */
243	if (last_addr <= new_addr \|\| new_addr == 0 \|\|
244	last_addr >= 0x10000) {
245	new_addr = ~0U;
246	}
247	} else {
248	new_addr = ~0U;
249	}
250	} else {
251	if (cmd & PCI_COMMAND_MEMORY) {
252	new_addr = le32_to_cpu((uint32_t )(d->config +
253	config_ofs));
254	/* the ROM slot has a specific enable bit */
255	if (i == PCI_ROM_SLOT && !(new_addr & 1))
256	goto no_mem_map;
257	new_addr = new_addr & ~(r->size - 1);
258	last_addr = new_addr + r->size - 1;
259	/* NOTE: we do not support wrapping */
260	/* XXX: as we cannot support really dynamic
261	mappings, we handle specific values as invalid
262	mappings. */
263	if (last_addr <= new_addr \|\| new_addr == 0 \|\|
264	last_addr == ~0U) {
265	new_addr = ~0U;
266	}
267	} else {
268	no_mem_map:
269	new_addr = ~0U;
270	}
271	}
272	/* now do the real mapping */
273	if (new_addr != r->addr) {
274	if (r->addr != ~0U) {
275	if (r->type & PCI_ADDRESS_SPACE_IO) {
276	int devclass;
277	/* NOTE: specific hack for IDE in PC case:
278	only one byte must be mapped. */
279	devclass = d->config[0x0a] \| (d->config[0x0b] << 8);
280	if (devclass == 0x0101 && r->size == 4) {
281	int rc = d->pDevIns->pDevHlp->pfnIOPortDeregister(d->pDevIns, r->addr + 2, 1);
282	AssertRC(rc);
283	} else {
284	int rc = d->pDevIns->pDevHlp->pfnIOPortDeregister(d->pDevIns, r->addr, r->size);
285	AssertRC(rc);
286	}
287	} else {
288	int rc = d->pDevIns->pDevHlp->pfnMMIODeregister(d->pDevIns,
289	r->addr + PCIBUS2PCIGLOBALS(d->Int.s.pBus)->pci_mem_base,
290	r->size);
291	AssertMsg(VBOX_SUCCESS(rc) \|\| !strcmp(d->name, "vga") \|\| !strcmp(d->name, "VMMDev"), ("rc=%Vrc d=%s\n", rc, d->name)); NOREF(rc);
292	}
293	}
294	r->addr = new_addr;
295	if (r->addr != ~0U) {
296	int rc = r->map_func(d, i,
297	r->addr + (r->type & PCI_ADDRESS_SPACE_IO ? 0 : PCIBUS2PCIGLOBALS(d->Int.s.pBus)->pci_mem_base),
298	r->size, (PCIADDRESSSPACE)(r->type));
299	AssertRC(rc);
300	}
301	}
302	}
303	}
304	}
305
306	static uint32_t pci_default_read_config(PCIDevice *d,
307	uint32_t address, int len)
308	{
309	uint32_t val;
310	switch(len) {
311	case 1:
312	val = d->config[address];
313	break;
314	case 2:
315	val = le16_to_cpu((uint16_t )(d->config + address));
316	break;
317	default:
318	case 4:
319	val = le32_to_cpu((uint32_t )(d->config + address));
320	break;
321	}
322	return val;
323	}
324
325	static void pci_default_write_config(PCIDevice *d,
326	uint32_t address, uint32_t val, int len)
327	{
328	int can_write, i;
329	uint32_t end, addr;
330
331	if (len == 4 && ((address >= 0x10 && address < 0x10 + 4 * 6) \|\|
332	(address >= 0x30 && address < 0x34))) {
333	PCIIORegion *r;
334	int reg;
335
336	if ( address >= 0x30 ) {
337	reg = PCI_ROM_SLOT;
338	}else{
339	reg = (address - 0x10) >> 2;
340	}
341	r = &d->Int.s.aIORegions[reg];
342	if (r->size == 0)
343	goto default_config;
344	/* compute the stored value */
345	if (reg == PCI_ROM_SLOT) {
346	/* keep ROM enable bit */
347	val &= (~(r->size - 1)) \| 1;
348	} else {
349	val &= ~(r->size - 1);
350	val \|= r->type;
351	}
352	(uint32_t )(d->config + address) = cpu_to_le32(val);
353	pci_update_mappings(d);
354	return;
355	}
356	default_config:
357	/* not efficient, but simple */
358	addr = address;
359	for(i = 0; i < len; i++) {
360	/* default read/write accesses */
361	switch(d->config[0x0e]) {
362	case 0x00:
363	case 0x80:
364	switch(addr) {
365	case 0x00:
366	case 0x01:
367	case 0x02:
368	case 0x03:
369	case 0x08:
370	case 0x09:
371	case 0x0a:
372	case 0x0b:
373	case 0x0e:
374	case 0x10: case 0x11: case 0x12: case 0x13: case 0x14: case 0x15: case 0x16: case 0x17: /* base */
375	case 0x18: case 0x19: case 0x1a: case 0x1b: case 0x1c: case 0x1d: case 0x1e: case 0x1f:
376	case 0x20: case 0x21: case 0x22: case 0x23: case 0x24: case 0x25: case 0x26: case 0x27:
377	case 0x30: case 0x31: case 0x32: case 0x33: /* rom */
378	case 0x3d:
379	can_write = 0;
380	break;
381	default:
382	can_write = 1;
383	break;
384	}
385	break;
386	default:
387	case 0x01:
388	switch(addr) {
389	case 0x00:
390	case 0x01:
391	case 0x02:
392	case 0x03:
393	case 0x08:
394	case 0x09:
395	case 0x0a:
396	case 0x0b:
397	case 0x0e:
398	case 0x38: case 0x39: case 0x3a: case 0x3b: /* rom */
399	case 0x3d:
400	can_write = 0;
401	break;
402	default:
403	can_write = 1;
404	break;
405	}
406	break;
407	}
408	if (can_write) {
409	d->config[addr] = val;
410	}
411	addr++;
412	val >>= 8;
413	}
414
415	end = address + len;
416	if (end > PCI_COMMAND && address < (PCI_COMMAND + 2)) {
417	/* if the command register is modified, we must modify the mappings */
418	pci_update_mappings(d);
419	}
420	}
421
422	static void pci_data_write(PCIBus *s, uint32_t addr, uint32_t val, int len)
423	{
424	PCIDevice *pci_dev;
425	int config_addr, iBus;
426
427	Log(("pci_data_write: addr=%08x val=%08x len=%d\n", s->uConfigReg, val, len));
428
429	if (!(s->uConfigReg & (1 << 31))) {
430	return;
431	}
432	if ((s->uConfigReg & 0x3) != 0) {
433	return;
434	}
435	iBus = (s->uConfigReg >> 16) & 0xff;
436	if (iBus != 0)
437	return;
438	pci_dev = s->devices[(s->uConfigReg >> 8) & 0xff];
439	if (!pci_dev)
440	return;
441	config_addr = (s->uConfigReg & 0xfc) \| (addr & 3);
442	Log(("pci_config_write: %s: addr=%02x val=%08x len=%d\n", pci_dev->name, config_addr, val, len));
443	pci_dev->Int.s.pfnConfigWrite(pci_dev, config_addr, val, len);
444	}
445
446	static uint32_t pci_data_read(PCIBus *s, uint32_t addr, int len)
447	{
448	PCIDevice *pci_dev;
449	int config_addr, iBus;
450	uint32_t val;
451
452	if (!(s->uConfigReg & (1 << 31)))
453	goto fail;
454	if ((s->uConfigReg & 0x3) != 0)
455	goto fail;
456	iBus = (s->uConfigReg >> 16) & 0xff;
457	if (iBus != 0)
458	goto fail;
459	pci_dev = s->devices[(s->uConfigReg >> 8) & 0xff];
460	if (!pci_dev) {
461	fail:
462	switch(len) {
463	case 1:
464	val = 0xff;
465	break;
466	case 2:
467	val = 0xffff;
468	break;
469	default:
470	case 4:
471	val = 0xffffffff;
472	break;
473	}
474	goto the_end;
475	}
476	config_addr = (s->uConfigReg & 0xfc) \| (addr & 3);
477	val = pci_dev->Int.s.pfnConfigRead(pci_dev, config_addr, len);
478	Log(("pci_config_read: %s: addr=%02x val=%08x len=%d\n", pci_dev->name, config_addr, val, len));
479	the_end:
480	return val;
481	}
482
483	#endif /* IN_RING3 */
484
485
486	/* return the global irq number corresponding to a given device irq
487	pin. We could also use the bus number to have a more precise
488	mapping. */
489	static inline int pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
490	{
491	int slot_addend;
492	slot_addend = (pci_dev->devfn >> 3) - 1;
493	return (irq_num + slot_addend) & 3;
494	}
495
496	static inline int pci_slot_get_apic_pirq(PCIDevice *pci_dev, int irq_num)
497	{
498	return (irq_num + (pci_dev->devfn >> 3)) & 7;
499	}
500
501	static inline int get_pci_irq_apic_level(PPCIGLOBALS pGlobals, int irq_num)
502	{
503	int apic_level;
504	apic_level = ((pGlobals->pci_apic_irq_levels[irq_num][0] \|
505	pGlobals->pci_apic_irq_levels[irq_num][1]) != 0);
506	return apic_level;
507	}
508
509	static void apic_set_irq(PPCIBUS pBus, PCIDevice *pci_dev, int irq_num1, int level, int acpi_irq)
510	{
511	PPCIGLOBALS pGlobals = PCIBUS2PCIGLOBALS(pBus);
512	int shift, apic_irq, apic_level;
513	uint32_t *p;
514
515	if (acpi_irq == -1) {
516	int uIrqIndex = pci_dev->Int.s.iIrq;
517	int irq_num = pci_slot_get_apic_pirq(pci_dev, irq_num1);
518	p = &pGlobals->pci_apic_irq_levels[irq_num][uIrqIndex >> 5];
519	shift = (uIrqIndex & 0x1f);
520	p = (p & ~(1 << shift)) \| (level << shift);
521	apic_irq = irq_num + 0x10;
522	apic_level = get_pci_irq_apic_level(pGlobals, irq_num);
523	Log3(("apic_set_irq: %s: irq_num1=%d level=%d apic_irq=%d apic_level=%d irq_num1=%d\n",
524	HCSTRING(pci_dev->name), irq_num1, level, apic_irq, apic_level, irq_num));
525	} else {
526	apic_irq = acpi_irq;
527	apic_level = level;
528	Log3(("apic_set_irq: %s: irq_num1=%d level=%d apic_irq=%d apic_level=%d\n",
529	HCSTRING(pci_dev->name), irq_num1, level, apic_irq, apic_level));
530	}
531
532	pBus->CTXALLSUFF(pPciHlp)->pfnIoApicSetIrq(CTXSUFF(pBus->pDevIns), apic_irq, apic_level);
533	}
534
535	static inline int get_pci_irq_level(PPCIGLOBALS pGlobals, int irq_num)
536	{
537	int pic_level;
538	#if (PCI_IRQ_WORDS == 2)
539	pic_level = ((pGlobals->pci_irq_levels[irq_num][0] \|
540	pGlobals->pci_irq_levels[irq_num][1]) != 0);
541	#else
542	{
543	int i;
544	pic_level = 0;
545	for(i = 0; i < PCI_IRQ_WORDS; i++) {
546	if (pGlobals->pci_irq_levels[irq_num][i]) {
547	pic_level = 1;
548	break;
549	}
550	}
551	}
552	#endif
553	return pic_level;
554	}
555
556	/**
557	* Set the IRQ for a PCI device.
558	*
559	* @param pDevIns Device instance of the PCI Bus.
560	* @param pPciDev The PCI device structure.
561	* @param iIrq IRQ number to set.
562	* @param iLevel IRQ level.
563	*/
564	PDMBOTHCBDECL(void) pciSetIrq(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, int iIrq, int iLevel)
565	{
566	PPCIBUS pBus = PDMINS2DATA(pDevIns, PPCIBUS);
567	PPCIGLOBALS pGlobals = PCIBUS2PCIGLOBALS(pBus);
568	uint8_t *pbCfg = pBus->PIIX3State.dev.config;
569	const bool fIsAcpiDevice = pPciDev->config[2] == 0x13 && pPciDev->config[3] == 0x71;
570	const bool fIsApicEnabled = pGlobals->fUseIoApic && pbCfg[0xde] == 0xbe && pbCfg[0xad] == 0xef;
571	int pic_irq, pic_level;
572	uint32_t *p;
573
574	/* apic only */
575	if (fIsApicEnabled)
576	{
577	if (fIsAcpiDevice)
578	/*
579	* ACPI needs special treatment since SCI is hardwired and
580	* should not be affected by PCI IRQ routing tables at the
581	* same time SCI IRQ is shared in PCI sense hence this
582	* kludge (i.e. we fetch the hardwired value from ACPIs
583	* PCI device configuration space).
584	*/
585	apic_set_irq(pBus, pPciDev, -1, iLevel, pPciDev->config[0x3c]);
586	else
587	apic_set_irq(pBus, pPciDev, iIrq, iLevel, -1);
588	return;
589	}
590
591	if (fIsAcpiDevice)
592	{
593	/* As per above treat ACPI in a special way */
594	pic_irq = pPciDev->config[0x3c];
595	pGlobals->acpi_irq = pic_irq;
596	pGlobals->acpi_irq_level = iLevel;
597	}
598	else
599	{
600	int shift, irq_num, uIrqIndex;
601	irq_num = pci_slot_get_pirq(pPciDev, iIrq);
602	uIrqIndex = pPciDev->Int.s.iIrq;
603	p = &pGlobals->pci_irq_levels[irq_num][uIrqIndex >> 5];
604	shift = (uIrqIndex & 0x1f);
605	p = (p & ~(1 << shift)) \| (iLevel << shift);
606
607	/* now we change the pic irq level according to the piix irq mappings */
608	pic_irq = pbCfg[0x60 + irq_num];
609	if (pic_irq >= 16)
610	return;
611	}
612
613	/* the pic level is the logical OR of all the PCI irqs mapped to it */
614	pic_level = 0;
615	if (pic_irq == pbCfg[0x60])
616	pic_level \|= get_pci_irq_level(pGlobals, 0);
617	if (pic_irq == pbCfg[0x61])
618	pic_level \|= get_pci_irq_level(pGlobals, 1);
619	if (pic_irq == pbCfg[0x62])
620	pic_level \|= get_pci_irq_level(pGlobals, 2);
621	if (pic_irq == pbCfg[0x63])
622	pic_level \|= get_pci_irq_level(pGlobals, 3);
623	if (pic_irq == pGlobals->acpi_irq)
624	pic_level \|= pGlobals->acpi_irq_level;
625
626	Log3(("piix3_set_irq: %s: iLevel=%d iIrq=%d pic_irq=%d pic_level=%d\n",
627	HCSTRING(pPciDev->name), iLevel, iIrq, pic_irq, pic_level));
628	pBus->CTXALLSUFF(pPciHlp)->pfnIsaSetIrq(CTXSUFF(pBus->pDevIns), pic_irq, pic_level);
629	}
630
631	#ifdef IN_RING3
632
633	static void piix3_reset(PIIX3State *d)
634	{
635	uint8_t *pci_conf = d->dev.config;
636
637	pci_conf[0x04] = 0x07; /* master, memory and I/O */
638	pci_conf[0x05] = 0x00;
639	pci_conf[0x06] = 0x00;
640	pci_conf[0x07] = 0x02; /* PCI_status_devsel_medium */
641	pci_conf[0x4c] = 0x4d;
642	pci_conf[0x4e] = 0x03;
643	pci_conf[0x4f] = 0x00;
644	pci_conf[0x60] = 0x80;
645	pci_conf[0x69] = 0x02;
646	pci_conf[0x70] = 0x80;
647	pci_conf[0x76] = 0x0c;
648	pci_conf[0x77] = 0x0c;
649	pci_conf[0x78] = 0x02;
650	pci_conf[0x79] = 0x00;
651	pci_conf[0x80] = 0x00;
652	pci_conf[0x82] = 0x02; /* Get rid of the Linux guest "Enabling Passive Release" PCI quirk warning. */
653	pci_conf[0xa0] = 0x08;
654	pci_conf[0xa0] = 0x08;
655	pci_conf[0xa2] = 0x00;
656	pci_conf[0xa3] = 0x00;
657	pci_conf[0xa4] = 0x00;
658	pci_conf[0xa5] = 0x00;
659	pci_conf[0xa6] = 0x00;
660	pci_conf[0xa7] = 0x00;
661	pci_conf[0xa8] = 0x0f;
662	pci_conf[0xaa] = 0x00;
663	pci_conf[0xab] = 0x00;
664	pci_conf[0xac] = 0x00;
665	pci_conf[0xae] = 0x00;
666	}
667
668	static void pci_config_writel(PCIDevice *d, uint32_t addr, uint32_t val)
669	{
670	PCIBus *s = d->Int.s.pBus;
671	s->uConfigReg = 0x80000000 \| (s->iBus << 16) \|
672	(d->devfn << 8) \| addr;
673	pci_data_write(s, 0, val, 4);
674	}
675
676	static void pci_config_writew(PCIDevice *d, uint32_t addr, uint32_t val)
677	{
678	PCIBus *s = d->Int.s.pBus;
679	s->uConfigReg = 0x80000000 \| (s->iBus << 16) \|
680	(d->devfn << 8) \| (addr & ~3);
681	pci_data_write(s, addr & 3, val, 2);
682	}
683
684	static void pci_config_writeb(PCIDevice *d, uint32_t addr, uint32_t val)
685	{
686	PCIBus *s = d->Int.s.pBus;
687	s->uConfigReg = 0x80000000 \| (s->iBus << 16) \|
688	(d->devfn << 8) \| (addr & ~3);
689	pci_data_write(s, addr & 3, val, 1);
690	}
691
692	static uint32_t pci_config_readw(PCIDevice *d, uint32_t addr)
693	{
694	PCIBus *s = d->Int.s.pBus;
695	s->uConfigReg = 0x80000000 \| (s->iBus << 16) \|
696	(d->devfn << 8) \| (addr & ~3);
697	return pci_data_read(s, addr & 3, 2);
698	}
699
700	static uint32_t pci_config_readb(PCIDevice *d, uint32_t addr)
701	{
702	PCIBus *s = d->Int.s.pBus;
703	s->uConfigReg = 0x80000000 \| (s->iBus << 16) \|
704	(d->devfn << 8) \| (addr & ~3);
705	return pci_data_read(s, addr & 3, 1);
706	}
707
708	/* host irqs corresponding to PCI irqs A-D */
709	static const uint8_t pci_irqs[4] = { 11, 9, 11, 9 }; /* bird: added const */
710
711	static void pci_set_io_region_addr(PCIDevice *d, int region_num, uint32_t addr)
712	{
713	PCIIORegion *r;
714	uint16_t cmd;
715	uint32_t ofs;
716
717	if ( region_num == PCI_ROM_SLOT ) {
718	ofs = 0x30;
719	}else{
720	ofs = 0x10 + region_num * 4;
721	}
722
723	pci_config_writel(d, ofs, addr);
724	r = &d->Int.s.aIORegions[region_num];
725
726	/* enable memory mappings */
727	cmd = pci_config_readw(d, PCI_COMMAND);
728	if ( region_num == PCI_ROM_SLOT )
729	cmd \|= 2;
730	else if (r->type & PCI_ADDRESS_SPACE_IO)
731	cmd \|= 1;
732	else
733	cmd \|= 2;
734	pci_config_writew(d, PCI_COMMAND, cmd);
735	}
736
737	static void pci_bios_init_device(PCIDevice *d)
738	{
739	int devclass;
740	PCIIORegion *r;
741	uint32_t *paddr;
742	int i, pin, pic_irq, vendor_id, device_id;
743
744	devclass = pci_config_readw(d, PCI_CLASS_DEVICE);
745	vendor_id = pci_config_readw(d, PCI_VENDOR_ID);
746	device_id = pci_config_readw(d, PCI_DEVICE_ID);
747	switch(devclass)
748	{
749	case 0x0101:
750	if (vendor_id == 0x8086 && device_id == 0x7010) {
751	/* PIIX3 IDE */
752	pci_config_writew(d, 0x40, 0x8000); /* enable IDE0 */
753	pci_config_writew(d, 0x42, 0x8000); /* enable IDE1 */
754	goto default_map;
755	} else {
756	/* IDE: we map it as in ISA mode */
757	pci_set_io_region_addr(d, 0, 0x1f0);
758	pci_set_io_region_addr(d, 1, 0x3f4);
759	pci_set_io_region_addr(d, 2, 0x170);
760	pci_set_io_region_addr(d, 3, 0x374);
761	}
762	break;
763	case 0x0300:
764	if (vendor_id != 0x80ee)
765	goto default_map;
766	/* VGA: map frame buffer to default Bochs VBE address */
767	pci_set_io_region_addr(d, 0, 0xE0000000);
768	break;
769	case 0x0800:
770	/* PIC */
771	vendor_id = pci_config_readw(d, PCI_VENDOR_ID);
772	device_id = pci_config_readw(d, PCI_DEVICE_ID);
773	if (vendor_id == 0x1014) {
774	/* IBM */
775	if (device_id == 0x0046 \|\| device_id == 0xFFFF) {
776	/* MPIC & MPIC2 */
777	pci_set_io_region_addr(d, 0, 0x80800000 + 0x00040000);
778	}
779	}
780	break;
781	case 0xff00:
782	if (vendor_id == 0x0106b &&
783	(device_id == 0x0017 \|\| device_id == 0x0022)) {
784	/* macio bridge */
785	pci_set_io_region_addr(d, 0, 0x80800000);
786	}
787	break;
788	default:
789	default_map:
790	/* default memory mappings */
791	for(i = 0; i < PCI_NUM_REGIONS; i++) {
792	r = &d->Int.s.aIORegions[i];
793
794	if (r->size) {
795	if (r->type & PCI_ADDRESS_SPACE_IO)
796	paddr = &PCIBUS2PCIGLOBALS(d->Int.s.pBus)->pci_bios_io_addr;
797	else
798	paddr = &PCIBUS2PCIGLOBALS(d->Int.s.pBus)->pci_bios_mem_addr;
799	paddr = (paddr + r->size - 1) & ~(r->size - 1);
800	pci_set_io_region_addr(d, i, *paddr);
801	*paddr += r->size;
802	}
803	}
804	break;
805	}
806
807	/* map the interrupt */
808	pin = pci_config_readb(d, PCI_INTERRUPT_PIN);
809	if (pin != 0) {
810	pin = pci_slot_get_pirq(d, pin - 1);
811	pic_irq = pci_irqs[pin];
812	pci_config_writeb(d, PCI_INTERRUPT_LINE, pic_irq);
813	}
814	}
815
816	/* -=-=-=-=-=- wrappers -=-=-=-=-=- */
817
818	/**
819	* Port I/O Handler for PCI address OUT operations.
820	*
821	* @returns VBox status code.
822	*
823	* @param pDevIns The device instance.
824	* @param pvUser User argument - ignored.
825	* @param uPort Port number used for the IN operation.
826	* @param u32 The value to output.
827	* @param cb The value size in bytes.
828	*/
829	static DECLCALLBACK(int) pciIOPortAddressWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
830	{
831	Log(("pciIOPortAddressWrite: Port=%#x u32=%#x cb=%d\n", Port, u32, cb));
832	NOREF(pvUser);
833	if (cb == 4)
834	{
835	PCI_LOCK(pDevIns, VINF_IOM_HC_IOPORT_WRITE);
836	pci_addr_writel(PDMINS2DATA(pDevIns, PCIBus *), Port, u32);
837	PCI_UNLOCK(pDevIns);
838	}
839	/* else: 440FX does "pass through to the bus" for other writes, what ever that means.
840	* Linux probes for cmd640 using byte writes/reads during ide init. We'll just ignore it. */
841	return VINF_SUCCESS;
842	}
843
844	/**
845	* Port I/O Handler for PCI address IN operations.
846	*
847	* @returns VBox status code.
848	*
849	* @param pDevIns The device instance.
850	* @param pvUser User argument - ignored.
851	* @param uPort Port number used for the IN operation.
852	* @param pu32 Where to store the result.
853	* @param cb Number of bytes read.
854	*/
855	static DECLCALLBACK(int) pciIOPortAddressRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
856	{
857	NOREF(pvUser);
858	if (cb == 4)
859	{
860	PCI_LOCK(pDevIns, VINF_IOM_HC_IOPORT_READ);
861	pu32 = pci_addr_readl(PDMINS2DATA(pDevIns, PCIBus ), Port);
862	PCI_UNLOCK(pDevIns);
863	Log(("pciIOPortAddressRead: Port=%#x cb=%d -> %#x\n", Port, cb, *pu32));
864	return VINF_SUCCESS;
865	}
866	/* else: 440FX does "pass through to the bus" for other writes, what ever that means.
867	* Linux probes for cmd640 using byte writes/reads during ide init. We'll just ignore it. */
868	Log(("pciIOPortAddressRead: Port=%#x cb=%d VERR_IOM_IOPORT_UNUSED\n", Port, cb));
869	return VERR_IOM_IOPORT_UNUSED;
870	}
871
872
873	/**
874	* Port I/O Handler for PCI data OUT operations.
875	*
876	* @returns VBox status code.
877	*
878	* @param pDevIns The device instance.
879	* @param pvUser User argument - ignored.
880	* @param uPort Port number used for the IN operation.
881	* @param u32 The value to output.
882	* @param cb The value size in bytes.
883	*/
884	static DECLCALLBACK(int) pciIOPortDataWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
885	{
886	Log(("pciIOPortDataWrite: Port=%#x u32=%#x cb=%d\n", Port, u32, cb));
887	NOREF(pvUser);
888	if (!(Port % cb))
889	{
890	PCI_LOCK(pDevIns, VINF_IOM_HC_IOPORT_WRITE);
891	pci_data_write(PDMINS2DATA(pDevIns, PCIBus *), Port, u32, cb);
892	PCI_UNLOCK(pDevIns);
893	}
894	else
895	AssertMsgFailed(("Write to port %#x u32=%#x cb=%d\n", Port, u32, cb));
896	return VINF_SUCCESS;
897	}
898
899
900	/**
901	* Port I/O Handler for PCI data IN operations.
902	*
903	* @returns VBox status code.
904	*
905	* @param pDevIns The device instance.
906	* @param pvUser User argument - ignored.
907	* @param uPort Port number used for the IN operation.
908	* @param pu32 Where to store the result.
909	* @param cb Number of bytes read.
910	*/
911	static DECLCALLBACK(int) pciIOPortDataRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
912	{
913	NOREF(pvUser);
914	if (!(Port % cb))
915	{
916	PCI_LOCK(pDevIns, VINF_IOM_HC_IOPORT_READ);
917	pu32 = pci_data_read(PDMINS2DATA(pDevIns, PCIBus ), Port, cb);
918	PCI_UNLOCK(pDevIns);
919	Log(("pciIOPortDataRead: Port=%#x cb=%#x -> %#x\n", Port, cb, *pu32));
920	return VINF_SUCCESS;
921	}
922	AssertMsgFailed(("Read from port %#x cb=%d\n", Port, cb));
923	return VERR_IOM_IOPORT_UNUSED;
924	}
925
926
927	/**
928	* Saves a state of the PCI device.
929	*
930	* @returns VBox status code.
931	* @param pDevIns Device instance of the PCI Bus.
932	* @param pPciDev Pointer to PCI device.
933	* @param pSSMHandle The handle to save the state to.
934	*/
935	static DECLCALLBACK(int) pciGenericSaveExec(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, PSSMHANDLE pSSMHandle)
936	{
937	return SSMR3PutMem(pSSMHandle, &pPciDev->config[0], sizeof(pPciDev->config));
938	}
939
940
941	/**
942	* Loads a saved PCI device state.
943	*
944	* @returns VBox status code.
945	* @param pDevIns Device instance of the PCI Bus.
946	* @param pPciDev Pointer to PCI device.
947	* @param pSSMHandle The handle to the saved state.
948	*/
949	static DECLCALLBACK(int) pciGenericLoadExec(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, PSSMHANDLE pSSMHandle)
950	{
951	return SSMR3GetMem(pSSMHandle, &pPciDev->config[0], sizeof(pPciDev->config));
952	}
953
954
955	/**
956	* Saves a state of the PCI device.
957	*
958	* @returns VBox status code.
959	* @param pDevIns The device instance.
960	* @param pPciDev Pointer to PCI device.
961	* @param pSSMHandle The handle to save the state to.
962	*/
963	static DECLCALLBACK(int) pciSaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSMHandle)
964	{
965	uint32_t i;
966	PPCIBUS pData = PDMINS2DATA(pDevIns, PPCIBUS);
967	PPCIGLOBALS pGlobals = PCIBUS2PCIGLOBALS(pData);
968
969	/*
970	* Bus state data.
971	*/
972	SSMR3PutU32(pSSMHandle, pData->uConfigReg);
973	SSMR3PutBool(pSSMHandle, pGlobals->fUseIoApic);
974	SSMR3PutU32(pSSMHandle, ~0); /* separator */
975
976	/*
977	* Iterate all the devices.
978	*/
979	for (i = 0; i < ELEMENTS(pData->devices); i++)
980	{
981	PPCIDEVICE pDev = pData->devices[i];
982	if (pDev)
983	{
984	int rc;
985	SSMR3PutU32(pSSMHandle, i);
986	SSMR3PutMem(pSSMHandle, pDev->config, sizeof(pDev->config));
987	rc = SSMR3PutS32(pSSMHandle, pDev->Int.s.iIrq);
988	if (VBOX_FAILURE(rc))
989	return rc;
990	}
991	}
992	return SSMR3PutU32(pSSMHandle, ~0); /* terminator */
993	}
994
995	/**
996	* Loads a saved PCI device state.
997	*
998	* @returns VBox status code.
999	* @param pDevIns The device instance.
1000	* @param pSSMHandle The handle to the saved state.
1001	* @param u32Version The data unit version number.
1002	*/
1003	static DECLCALLBACK(int) pciLoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSMHandle, uint32_t u32Version)
1004	{
1005	PPCIBUS pData = PDMINS2DATA(pDevIns, PPCIBUS);
1006	PPCIGLOBALS pGlobals = PCIBUS2PCIGLOBALS(pData);
1007	uint32_t u32;
1008	uint32_t i;
1009	int rc;
1010
1011	/*
1012	* Check the version.
1013	*/
1014	if (u32Version > 2)
1015	{
1016	AssertFailed();
1017	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
1018	}
1019
1020	/*
1021	* Bus state data.
1022	*/
1023	SSMR3GetU32(pSSMHandle, &pData->uConfigReg);
1024	if (u32Version > 1)
1025	SSMR3GetBool(pSSMHandle, &pGlobals->fUseIoApic);
1026
1027	/* separator */
1028	rc = SSMR3GetU32(pSSMHandle, &u32);
1029	if (VBOX_FAILURE(rc))
1030	return rc;
1031	if (u32 != (uint32_t)~0)
1032	{
1033	AssertMsgFailed(("u32=%#x\n", u32));
1034	return rc;
1035	}
1036
1037	/*
1038	* Iterate all the devices.
1039	*/
1040	for (i = 0;; i++)
1041	{
1042	PCIDEVICE DevTmp;
1043	PPCIDEVICE pDev;
1044
1045	/* index / terminator */
1046	rc = SSMR3GetU32(pSSMHandle, &u32);
1047	if (VBOX_FAILURE(rc))
1048	return rc;
1049	if (u32 == (uint32_t)~0)
1050	break;
1051	if ( u32 >= ELEMENTS(pData->devices)
1052	\|\| u32 < i)
1053	{
1054	AssertMsgFailed(("u32=%#x i=%#x\n", u32, i));
1055	return rc;
1056	}
1057
1058	/* skip forward to the device checking that no new devices are present. */
1059	for (; i < u32; i++)
1060	{
1061	if (pData->devices[i])
1062	{
1063	AssertMsgFailed(("New device in slot %#x, %s\n", i, pData->devices[i]->name));
1064	return VERR_SSM_LOAD_CONFIG_MISMATCH;
1065	}
1066	}
1067
1068	/* check that it's still around. */
1069	pDev = pData->devices[i];
1070	if (!pDev)
1071	{
1072	AssertMsgFailed(("Device in slot %#x have been removed!\n", i, pDev->name));
1073	return VERR_SSM_LOAD_CONFIG_MISMATCH;
1074	}
1075
1076	/* restore it */
1077	SSMR3GetMem(pSSMHandle, DevTmp.config, sizeof(DevTmp.config));
1078	rc = SSMR3GetS32(pSSMHandle, &DevTmp.Int.s.iIrq);
1079	if (VBOX_FAILURE(rc))
1080	return rc;
1081
1082	/* match the vendor id assuming that this will never be changed. */
1083	if ( DevTmp.config[0] != pDev->config[0]
1084	\|\| DevTmp.config[1] != pDev->config[1])
1085	{
1086	AssertMsgFailed(("Device in slot %#x (%s) vendor id mismatch! saved=%.4Vhxs current=%.4Vhxs\n",
1087	i, pDev->name, DevTmp.config, pDev->config));
1088	return VERR_SSM_LOAD_CONFIG_MISMATCH;
1089	}
1090
1091	/* commit the loaded device config. */
1092	memcpy(pDev->config, DevTmp.config, sizeof(pDev->config));
1093	if (DevTmp.Int.s.iIrq >= PCI_DEVICES_MAX) {
1094	AssertMsgFailed (("Device %s: Too many devices %d (max=%d)\n",
1095	pDev->name, DevTmp.Int.s.iIrq, PCI_DEVICES_MAX));
1096	return VERR_TOO_MUCH_DATA;
1097	}
1098
1099	pDev->Int.s.iIrq = DevTmp.Int.s.iIrq;
1100	}
1101	return VINF_SUCCESS;
1102	}
1103
1104
1105	/* -=-=-=-=-=- real code -=-=-=-=-=- */
1106
1107
1108	/**
1109	* Registers the device with the default PCI bus.
1110	*
1111	* @returns VBox status code.
1112	* @param pBus The bus to register with.
1113	* @param iDev The PCI device ordinal.
1114	* @param pPciDev The PCI device structure.
1115	* @param pszName Pointer to device name (permanent, readonly). For debugging, not unique.
1116	*/
1117	static void pciRegisterInternal(PPCIBUS pBus, int iDev, PPCIDEVICE pPciDev, const char *pszName)
1118	{
1119	Assert(!pBus->devices[iDev]);
1120	pPciDev->devfn = iDev;
1121	pPciDev->name = pszName;
1122	pPciDev->Int.s.pBus = pBus;
1123	pPciDev->Int.s.pfnConfigRead = pci_default_read_config;
1124	pPciDev->Int.s.pfnConfigWrite = pci_default_write_config;
1125	AssertMsg(pBus->uIrqIndex < PCI_DEVICES_MAX,
1126	("Device %s: Too many devices %d (max=%d)\n",
1127	pszName, pBus->uIrqIndex, PCI_DEVICES_MAX));
1128	pPciDev->Int.s.iIrq = pBus->uIrqIndex++;
1129	pBus->devices[iDev] = pPciDev;
1130	Log(("PCI: Registered device %d function %d (%#x) '%s'.\n",
1131	iDev >> 3, iDev & 7, 0x80000000 \| (iDev << 8), pszName));
1132	}
1133
1134
1135	/**
1136	* Registers the device with the default PCI bus.
1137	*
1138	* @returns VBox status code.
1139	* @param pDevIns Device instance of the PCI Bus.
1140	* @param pPciDev The PCI device structure.
1141	* Any PCI enabled device must keep this in it's instance data!
1142	* Fill in the PCI data config before registration, please.
1143	* @param pszName Pointer to device name (permanent, readonly). For debugging, not unique.
1144	* @param iDev The PCI device number. Use a negative value for auto assigning one.
1145	*/
1146	static DECLCALLBACK(int) pciRegister(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, const char *pszName, int iDev)
1147	{
1148	PPCIBUS pBus = PDMINS2DATA(pDevIns, PPCIBUS);
1149
1150	/*
1151	* Check input.
1152	*/
1153	if ( !pszName
1154	\|\| !pPciDev
1155	\|\| iDev >= (int)ELEMENTS(pBus->devices)
1156	\|\| (iDev >= 0 && iDev <= 8))
1157	{
1158	AssertMsgFailed(("Invalid argument! pszName=%s pPciDev=%p iDev=%d\n", pszName, pPciDev, iDev));
1159	return VERR_INVALID_PARAMETER;
1160	}
1161
1162	/*
1163	* Find device slot.
1164	*/
1165	if (iDev < 0)
1166	{
1167	/*
1168	* Special check for the IDE controller which is our function 1 device
1169	* before searching.
1170	*/
1171	if ( !strcmp(pszName, "piix3ide")
1172	&& !pBus->devices[9])
1173	iDev = 9;
1174	else
1175	{
1176	Assert(!(pBus->iDevSearch % 8));
1177	for (iDev = pBus->iDevSearch; iDev < (int)ELEMENTS(pBus->devices); iDev += 8)
1178	if ( !pBus->devices[iDev]
1179	&& !pBus->devices[iDev + 1]
1180	&& !pBus->devices[iDev + 2]
1181	&& !pBus->devices[iDev + 3]
1182	&& !pBus->devices[iDev + 4]
1183	&& !pBus->devices[iDev + 5]
1184	&& !pBus->devices[iDev + 6]
1185	&& !pBus->devices[iDev + 7])
1186	break;
1187	if (iDev >= (int)ELEMENTS(pBus->devices))
1188	{
1189	AssertMsgFailed(("Couldn't find free spot!\n"));
1190	return VERR_PDM_TOO_PCI_MANY_DEVICES;
1191	}
1192	}
1193	pPciDev->Int.s.fRequestedDevFn = false;
1194	}
1195	else
1196	{
1197	/*
1198	* An explicit request.
1199	*
1200	* If the slot is occupied we'll have to relocate the device
1201	* currently occupying it first. This can only be done if the
1202	* existing device wasn't explicitly assigned. Also we limit
1203	* ourselves to function 0 devices.
1204	*
1205	* If you start setting devices + function in the
1206	* config, do it for all pci devices!
1207	*/
1208	AssertReleaseMsg(iDev > 8, ("iDev=%d pszName=%s\n", iDev, pszName));
1209	if (pBus->devices[iDev])
1210	{
1211	int iDevRel;
1212	AssertReleaseMsg(!(iDev % 8), ("PCI Configuration Conflict! iDev=%d pszName=%s clashes with %s\n",
1213	iDev, pszName, pBus->devices[iDev]->name));
1214	if ( pBus->devices[iDev]->Int.s.fRequestedDevFn
1215	\|\| (pBus->devices[iDev + 1] && pBus->devices[iDev + 1]->Int.s.fRequestedDevFn)
1216	\|\| (pBus->devices[iDev + 2] && pBus->devices[iDev + 2]->Int.s.fRequestedDevFn)
1217	\|\| (pBus->devices[iDev + 3] && pBus->devices[iDev + 3]->Int.s.fRequestedDevFn)
1218	\|\| (pBus->devices[iDev + 4] && pBus->devices[iDev + 4]->Int.s.fRequestedDevFn)
1219	\|\| (pBus->devices[iDev + 5] && pBus->devices[iDev + 5]->Int.s.fRequestedDevFn)
1220	\|\| (pBus->devices[iDev + 6] && pBus->devices[iDev + 6]->Int.s.fRequestedDevFn)
1221	\|\| (pBus->devices[iDev + 7] && pBus->devices[iDev + 7]->Int.s.fRequestedDevFn))
1222	{
1223	AssertReleaseMsgFailed(("Configuration error:'%s' and '%s' are both configured as device %d\n",
1224	pszName, pBus->devices[iDev]->name, iDev));
1225	return VERR_INTERNAL_ERROR;
1226	}
1227
1228	/* Find free slot for the device(s) we're moving and move them. */
1229	for (iDevRel = pBus->iDevSearch; iDevRel < (int)ELEMENTS(pBus->devices); iDevRel += 8)
1230	{
1231	if ( !pBus->devices[iDevRel]
1232	&& !pBus->devices[iDevRel + 1]
1233	&& !pBus->devices[iDevRel + 2]
1234	&& !pBus->devices[iDevRel + 3]
1235	&& !pBus->devices[iDevRel + 4]
1236	&& !pBus->devices[iDevRel + 5]
1237	&& !pBus->devices[iDevRel + 6]
1238	&& !pBus->devices[iDevRel + 7])
1239	{
1240	int i = 0;
1241	for (i = 0; i < 8; i++)
1242	{
1243	if (!pBus->devices[iDev + i])
1244	continue;
1245	Log(("PCI: relocating '%s' from slot %#x to %#x\n", pBus->devices[iDev + i]->name, iDev + i, iDevRel + i));
1246	pBus->devices[iDevRel + i] = pBus->devices[iDev + i];
1247	pBus->devices[iDevRel + i]->devfn = i;
1248	pBus->devices[iDev + i] = NULL;
1249	}
1250	}
1251	}
1252	if (pBus->devices[iDev])
1253	{
1254	AssertMsgFailed(("Couldn't find free spot!\n"));
1255	return VERR_PDM_TOO_PCI_MANY_DEVICES;
1256	}
1257	} /* if conflict */
1258	pPciDev->Int.s.fRequestedDevFn = true;
1259	}
1260
1261	/*
1262	* Register the device.
1263	*/
1264	pciRegisterInternal(pBus, iDev, pPciDev, pszName);
1265	return VINF_SUCCESS;
1266	}
1267
1268
1269	static DECLCALLBACK(int) pciIORegionRegister(PPDMDEVINS pDevIns, PPCIDEVICE pPciDev, int iRegion, uint32_t cbRegion, PCIADDRESSSPACE enmType, PFNPCIIOREGIONMAP pfnCallback)
1270	{
1271	PPCIIOREGION pRegion;
1272
1273	/*
1274	* Validate.
1275	*/
1276	if ( enmType != PCI_ADDRESS_SPACE_MEM
1277	&& enmType != PCI_ADDRESS_SPACE_IO
1278	&& enmType != PCI_ADDRESS_SPACE_MEM_PREFETCH)
1279	{
1280	AssertMsgFailed(("Invalid enmType=%#x? Or was this a bitmask after all...\n", enmType));
1281	return VERR_INVALID_PARAMETER;
1282	}
1283	if ((unsigned)iRegion >= PCI_NUM_REGIONS)
1284	{
1285	AssertMsgFailed(("Invalid iRegion=%d PCI_NUM_REGIONS=%d\n", iRegion, PCI_NUM_REGIONS));
1286	return VERR_INVALID_PARAMETER;
1287	}
1288
1289	/*
1290	* Register the I/O region.
1291	*/
1292	pRegion = &pPciDev->Int.s.aIORegions[iRegion];
1293	pRegion->addr = ~0U;
1294	pRegion->size = cbRegion;
1295	pRegion->type = enmType;
1296	pRegion->map_func = pfnCallback;
1297	return VINF_SUCCESS;
1298	}
1299
1300
1301	/**
1302	* Called to perform the job of the bios.
1303	*
1304	* @returns VBox status.
1305	* @param pDevIns Device instance of the first bus.
1306	*/
1307	static DECLCALLBACK(int) pciFakePCIBIOS(PPDMDEVINS pDevIns)
1308	{
1309	int rc;
1310	unsigned i;
1311	uint8_t elcr[2] = {0, 0};
1312	PPCIGLOBALS pGlobals = DEVINS2PCIGLOBALS(pDevIns);
1313	PPCIBUS pBus = PDMINS2DATA(pDevIns, PPCIBUS);
1314	PVM pVM = pDevIns->pDevHlp->pfnGetVM(pDevIns);
1315	Assert(pVM);
1316
1317	/*
1318	* Set the start addresses.
1319	*/
1320	pGlobals->pci_bios_io_addr = 0xc000;
1321	pGlobals->pci_bios_mem_addr = 0xf0000000;
1322
1323	/*
1324	* Activate IRQ mappings.
1325	*/
1326	for (i = 0; i < 4; i++)
1327	{
1328	uint8_t irq = pci_irqs[i];
1329	/* Set to trigger level. */
1330	elcr[irq >> 3] \|= (1 << (irq & 7));
1331	/* Activate irq remapping in PIIX3. */
1332	pci_config_writeb(&pBus->PIIX3State.dev, 0x60 + i, irq);
1333	}
1334
1335	/* Tell to the PIC. */
1336	rc = IOMIOPortWrite(pVM, 0x4d0, elcr[0], sizeof(uint8_t));
1337	if (rc == VINF_SUCCESS)
1338	rc = IOMIOPortWrite(pVM, 0x4d1, elcr[1], sizeof(uint8_t));
1339	if (rc != VINF_SUCCESS)
1340	{
1341	AssertMsgFailed(("Writing to PIC failed!\n"));
1342	return VBOX_SUCCESS(rc) ? VERR_INTERNAL_ERROR : rc;
1343	}
1344
1345	/*
1346	* Init the devices.
1347	*/
1348	for (i = 0; i < ELEMENTS(pBus->devices); i++)
1349	{
1350	if (pBus->devices[i])
1351	{
1352	Log2(("PCI: Initializing device %d (%#x) '%s'\n",
1353	i, 0x80000000 \| (i << 8), pBus->devices[i]->name));
1354	pci_bios_init_device(pBus->devices[i]);
1355	}
1356	}
1357	return VINF_SUCCESS;
1358	}
1359
1360
1361	/**
1362	* @copydoc FNPDMDEVRELOCATE
1363	*/
1364	static DECLCALLBACK(void) pciRelocate(PPDMDEVINS pDevIns, RTGCINTPTR offDelta)
1365	{
1366	PPCIBUS pBus = PDMINS2DATA(pDevIns, PPCIBUS);
1367	pBus->pDevInsGC = PDMDEVINS_2_GCPTR(pDevIns);
1368	pBus->pPciHlpGC = pBus->pPciHlpR3->pfnGetGCHelpers(pDevIns);
1369	}
1370
1371
1372	/**
1373	* Construct a PCI Bus device instance for a VM.
1374	*
1375	* @returns VBox status.
1376	* @param pDevIns The device instance data.
1377	* If the registration structure is needed, pDevIns->pDevReg points to it.
1378	* @param iInstance Instance number. Use this to figure out which registers and such to use.
1379	* The device number is also found in pDevIns->iInstance, but since it's
1380	* likely to be freqently used PDM passes it as parameter.
1381	* @param pCfgHandle Configuration node handle for the device. Use this to obtain the configuration
1382	* of the device instance. It's also found in pDevIns->pCfgHandle, but like
1383	* iInstance it's expected to be used a bit in this function.
1384	*/
1385	static DECLCALLBACK(int) pciConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfgHandle)
1386	{
1387	PPCIGLOBALS pGlobals = DEVINS2PCIGLOBALS(pDevIns);
1388	PPCIBUS pBus = PDMINS2DATA(pDevIns, PPCIBUS);
1389	PDMPCIBUSREG PciBusReg;
1390	int rc;
1391	bool fGCEnabled;
1392	bool fR0Enabled;
1393	bool fUseIoApic;
1394	Assert(iInstance == 0);
1395
1396	/*
1397	* Validate and read configuration.
1398	*/
1399	if (!CFGMR3AreValuesValid(pCfgHandle, "IOAPIC\0" "GCEnabled\0R0Enabled\0"))
1400	return VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
1401
1402	/* query whether we got an IOAPIC */
1403	rc = CFGMR3QueryBool(pCfgHandle, "IOAPIC", &fUseIoApic);
1404	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1405	fUseIoApic = false;
1406	else if (VBOX_FAILURE(rc))
1407	return PDMDEV_SET_ERROR(pDevIns, rc,
1408	N_("Configuration error: Failed to query boolean value \"IOAPIC\"."));
1409
1410	/* check if GC code is enabled. */
1411	rc = CFGMR3QueryBool(pCfgHandle, "GCEnabled", &fGCEnabled);
1412	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1413	fGCEnabled = true;
1414	else if (VBOX_FAILURE(rc))
1415	return PDMDEV_SET_ERROR(pDevIns, rc,
1416	N_("Configuration error: Failed to query boolean value \"GCEnabled\"."));
1417	Log(("PCI: fGCEnabled=%d\n", fGCEnabled));
1418
1419	/* check if R0 code is enabled. */
1420	rc = CFGMR3QueryBool(pCfgHandle, "R0Enabled", &fR0Enabled);
1421	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1422	fR0Enabled = true;
1423	else if (VBOX_FAILURE(rc))
1424	return PDMDEV_SET_ERROR(pDevIns, rc,
1425	N_("Configuration error: Failed to query boolean value \"R0Enabled\"."));
1426	Log(("PCI: fR0Enabled=%d\n", fR0Enabled));
1427
1428	/*
1429	* Init data and register the PCI bus.
1430	*/
1431	pGlobals->pci_mem_base = 0;
1432	pGlobals->pci_bios_io_addr = 0xc000;
1433	pGlobals->pci_bios_mem_addr = 0xf0000000;
1434	memset(&pGlobals->pci_irq_levels, 0, sizeof(pGlobals->pci_irq_levels));
1435	pGlobals->fUseIoApic = fUseIoApic;
1436	memset(&pGlobals->pci_apic_irq_levels, 0, sizeof(pGlobals->pci_apic_irq_levels));
1437
1438	pBus->pDevInsHC = pDevIns;
1439	pBus->pDevInsGC = PDMDEVINS_2_GCPTR(pDevIns);
1440
1441	PciBusReg.u32Version = PDM_PCIBUSREG_VERSION;
1442	PciBusReg.pfnRegisterHC = pciRegister;
1443	PciBusReg.pfnIORegionRegisterHC = pciIORegionRegister;
1444	PciBusReg.pfnSetIrqHC = pciSetIrq;
1445	PciBusReg.pfnSaveExecHC = pciGenericSaveExec;
1446	PciBusReg.pfnLoadExecHC = pciGenericLoadExec;
1447	PciBusReg.pfnFakePCIBIOSHC = pciFakePCIBIOS;
1448	PciBusReg.pszSetIrqGC = fGCEnabled ? "pciSetIrq" : NULL;
1449	PciBusReg.pszSetIrqR0 = fR0Enabled ? "pciSetIrq" : NULL;
1450	rc = pDevIns->pDevHlp->pfnPCIBusRegister(pDevIns, &PciBusReg, &pBus->pPciHlpR3);
1451	if (VBOX_FAILURE(rc))
1452	return PDMDEV_SET_ERROR(pDevIns, rc,
1453	N_("Failed to register ourselves as a PCI Bus"));
1454
1455	pBus->pPciHlpGC = pBus->pPciHlpR3->pfnGetGCHelpers(pDevIns);
1456	pBus->pPciHlpR0 = pBus->pPciHlpR3->pfnGetR0Helpers(pDevIns);
1457
1458	/*
1459	* Fill in PCI configs and add them to the bus.
1460	*/
1461	/* i440FX */
1462	pBus->PciDev.config[0x00] = 0x86; /* vendor_id: Intel */
1463	pBus->PciDev.config[0x01] = 0x80;
1464	pBus->PciDev.config[0x02] = 0x37; /* device_id: */
1465	pBus->PciDev.config[0x03] = 0x12;
1466	pBus->PciDev.config[0x08] = 0x02; /* revision */
1467	pBus->PciDev.config[0x0a] = 0x00; /* class_sub = host2pci */
1468	pBus->PciDev.config[0x0b] = 0x06; /* class_base = PCI_bridge */
1469	pBus->PciDev.config[0x0e] = 0x00; /* header_type */
1470	pBus->PciDev.pDevIns = pDevIns;
1471	pBus->PciDev.Int.s.fRequestedDevFn= true;
1472	pciRegisterInternal(pBus, 0, &pBus->PciDev, "i440FX");
1473
1474	/* PIIX3 */
1475	pBus->PIIX3State.dev.config[0x00] = 0x86; /* vendor: Intel */
1476	pBus->PIIX3State.dev.config[0x01] = 0x80;
1477	pBus->PIIX3State.dev.config[0x02] = 0x00; /* device_id: 82371SB PIIX3 PCI-to-ISA bridge (Step A1) */
1478	pBus->PIIX3State.dev.config[0x03] = 0x70;
1479	pBus->PIIX3State.dev.config[0x0a] = 0x01; /* class_sub = PCI_ISA */
1480	pBus->PIIX3State.dev.config[0x0b] = 0x06; /* class_base = PCI_bridge */
1481	pBus->PIIX3State.dev.config[0x0e] = 0x80; /* header_type = PCI_multifunction, generic */
1482	pBus->PIIX3State.dev.pDevIns = pDevIns;
1483	pBus->PciDev.Int.s.fRequestedDevFn= true;
1484	pciRegisterInternal(pBus, 8, &pBus->PIIX3State.dev, "PIIX3");
1485	piix3_reset(&pBus->PIIX3State);
1486
1487	pBus->iDevSearch = 16;
1488
1489	/*
1490	* Register I/O ports and save state.
1491	*/
1492	rc = PDMDevHlpIOPortRegister(pDevIns, 0xcf8, 1, NULL, pciIOPortAddressWrite, pciIOPortAddressRead, NULL, NULL, "i440FX (PCI)");
1493	if (VBOX_FAILURE(rc))
1494	return rc;
1495	rc = PDMDevHlpIOPortRegister(pDevIns, 0xcfc, 4, NULL, pciIOPortDataWrite, pciIOPortDataRead, NULL, NULL, "i440FX (PCI)");
1496	if (VBOX_FAILURE(rc))
1497	return rc;
1498	rc = PDMDevHlpSSMRegister(pDevIns, "pci", iInstance, 2, sizeof(*pBus),
1499	NULL, pciSaveExec, NULL, NULL, pciLoadExec, NULL);
1500	if (VBOX_FAILURE(rc))
1501	return rc;
1502
1503	return VINF_SUCCESS;
1504	}
1505
1506
1507	/**
1508	* The device registration structure.
1509	*/
1510	const PDMDEVREG g_DevicePCI =
1511	{
1512	/* u32Version */
1513	PDM_DEVREG_VERSION,
1514	/* szDeviceName */
1515	"pci",
1516	/* szGCMod */
1517	"VBoxDDGC.gc",
1518	/* szR0Mod */
1519	"VBoxDDR0.r0",
1520	/* pszDescription */
1521	"i440FX PCI bridge and PIIX3 ISA bridge.",
1522	/* fFlags */
1523	PDM_DEVREG_FLAGS_HOST_BITS_DEFAULT \| PDM_DEVREG_FLAGS_GUEST_BITS_32 \| PDM_DEVREG_FLAGS_GC \| PDM_DEVREG_FLAGS_R0,
1524	/* fClass */
1525	PDM_DEVREG_CLASS_BUS_PCI \| PDM_DEVREG_CLASS_BUS_ISA,
1526	/* cMaxInstances */
1527	1,
1528	/* cbInstance */
1529	sizeof(PCIBUS),
1530	/* pfnConstruct */
1531	pciConstruct,
1532	/* pfnDestruct */
1533	NULL,
1534	/* pfnRelocate */
1535	pciRelocate,
1536	/* pfnIOCtl */
1537	NULL,
1538	/* pfnPowerOn */
1539	NULL,
1540	/* pfnReset */
1541	NULL,
1542	/* pfnSuspend */
1543	NULL,
1544	/* pfnResume */
1545	NULL,
1546	/* pfnAttach */
1547	NULL,
1548	/* pfnDetach */
1549	NULL,
1550	/* pfnQueryInterface */
1551	NULL,
1552	/* pfnInitComplete */
1553	NULL
1554	};
1555	#endif /* IN_RING3 */
1556

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source: vbox/trunk/src/VBox/Devices/Bus/DevPCI.cpp@ 95

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