DevIoApic.cpp@ 63618

Last change on this file since 63618 was 63618, checked in by vboxsync, 8 years ago
DevIoApic: Comment regarding remote IRR bit and corresponding bugref.
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1	/* $Id: DevIoApic.cpp 63618 2016-08-23 09:19:07Z vboxsync $ */
2	/** @file
3	* IO APIC - Input/Output Advanced Programmable Interrupt Controller.
4	*/
5
6	/*
7	* Copyright (C) 2016 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_DEV_IOAPIC
23	#include <VBox/log.h>
24	#include <VBox/vmm/hm.h>
25	#include <VBox/msi.h>
26	#include <VBox/vmm/pdmdev.h>
27
28	#include "VBoxDD.h"
29	#include <iprt/x86.h>
30
31
32	/*********************************************************************************************************************************
33	* Defined Constants And Macros *
34	*********************************************************************************************************************************/
35	/** The current IO APIC saved state version. */
36	#define IOAPIC_SAVED_STATE_VERSION 2
37	/** The saved state version used by VirtualBox 5.0 and
38	* earlier. */
39	#define IOAPIC_SAVED_STATE_VERSION_VBOX_50 1
40
41	/** Implementation specified by the "Intel I/O Controller Hub 9
42	* (ICH9) Family" */
43	#define IOAPIC_HARDWARE_VERSION_ICH9 1
44	/** Implementation specified by the "82093AA I/O Advanced Programmable Interrupt
45	Controller" */
46	#define IOAPIC_HARDWARE_VERSION_82093AA 2
47	/** The IO APIC implementation to use. */
48	#define IOAPIC_HARDWARE_VERSION IOAPIC_HARDWARE_VERSION_ICH9
49
50	#if IOAPIC_HARDWARE_VERSION == IOAPIC_HARDWARE_VERSION_82093AA
51	/** The version. */
52	# define IOAPIC_VERSION 0x11
53	/** The ID mask. */
54	# define IOAPIC_ID_MASK 0x0f
55	#elif IOAPIC_HARDWARE_VERSION == IOAPIC_HARDWARE_VERSION_ICH9
56	/** The version. */
57	# define IOAPIC_VERSION 0x20
58	/** The ID mask. */
59	# define IOAPIC_ID_MASK 0xff
60	#else
61	# error "Implement me"
62	#endif
63
64	/** The default MMIO base physical address. */
65	#define IOAPIC_MMIO_BASE_PHYSADDR UINT64_C(0xfec00000)
66	/** The size of the MMIO range. */
67	#define IOAPIC_MMIO_SIZE X86_PAGE_4K_SIZE
68	/** The mask for getting direct registers from physical address. */
69	#define IOAPIC_MMIO_REG_MASK 0xff
70
71	/** The number of interrupt input pins. */
72	#define IOAPIC_NUM_INTR_PINS 24
73	/** Maximum redirection entires. */
74	#define IOAPIC_MAX_REDIR_ENTRIES (IOAPIC_NUM_INTR_PINS - 1)
75
76	/** Version register - Gets the version. */
77	#define IOAPIC_VER_GET_VER(a_Reg) ((a_Reg) & 0xff)
78	/** Version register - Gets the maximum redirection entry. */
79	#define IOAPIC_VER_GET_MRE(a_Reg) (((a_Reg) >> 16) & 0xff)
80	/** Version register - Gets whether Pin Assertion Register (PRQ) is
81	* supported. */
82	#define IOAPIC_VER_HAS_PRQ(a_Reg) RT_BOOL((a_Reg) & RT_BIT_32(15))
83
84	/** Index register - Valid write mask. */
85	#define IOAPIC_INDEX_VALID_WRITE_MASK UINT32_C(0xff)
86
87	/** Arbitration register - Gets the ID. */
88	#define IOAPIC_ARB_GET_ID(a_Reg) ((a_Reg) >> 24 & 0xf)
89
90	/** ID register - Gets the ID. */
91	#define IOAPIC_ID_GET_ID(a_Reg) ((a_Reg) >> 24 & IOAPIC_ID_MASK)
92
93	/** Redirection table entry - Vector. */
94	#define IOAPIC_RTE_VECTOR UINT64_C(0xff)
95	/** Redirection table entry - Delivery mode. */
96	#define IOAPIC_RTE_DELIVERY_MODE (RT_BIT_64(8) \| RT_BIT_64(9) \| RT_BIT_64(10))
97	/** Redirection table entry - Destination mode. */
98	#define IOAPIC_RTE_DEST_MODE RT_BIT_64(11)
99	/** Redirection table entry - Delivery status. */
100	#define IOAPIC_RTE_DELIVERY_STATUS RT_BIT_64(12)
101	/** Redirection table entry - Interrupt input pin polarity. */
102	#define IOAPIC_RTE_POLARITY RT_BIT_64(13)
103	/** Redirection table entry - Remote IRR. */
104	#define IOAPIC_RTE_REMOTE_IRR RT_BIT_64(14)
105	/** Redirection table entry - Trigger Mode. */
106	#define IOAPIC_RTE_TRIGGER_MODE RT_BIT_64(15)
107	/** Redirection table entry - the mask bit number. */
108	#define IOAPIC_RTE_MASK_BIT 16
109	/** Redirection table entry - the mask. */
110	#define IOAPIC_RTE_MASK RT_BIT_64(IOAPIC_RTE_MASK_BIT)
111	/** Redirection table entry - Extended Destination ID. */
112	#define IOAPIC_RTE_EXT_DEST_ID UINT64_C(0x00ff000000000000)
113	/** Redirection table entry - Destination. */
114	#define IOAPIC_RTE_DEST UINT64_C(0xff00000000000000)
115
116	/** Redirection table entry - Gets the destination. */
117	#define IOAPIC_RTE_GET_DEST(a_Reg) ((a_Reg) >> 56 & 0xff)
118	/** Redirection table entry - Gets the mask flag. */
119	#define IOAPIC_RTE_GET_MASK(a_Reg) (((a_Reg) >> IOAPIC_RTE_MASK_BIT) & 0x1)
120	/** Redirection table entry - Checks whether it's masked. */
121	#define IOAPIC_RTE_IS_MASKED(a_Reg) ((a_Reg) & IOAPIC_RTE_MASK)
122	/** Redirection table entry - Gets the trigger mode. */
123	#define IOAPIC_RTE_GET_TRIGGER_MODE(a_Reg) (((a_Reg) >> 15) & 0x1)
124	/** Redirection table entry - Gets the remote IRR flag. */
125	#define IOAPIC_RTE_GET_REMOTE_IRR(a_Reg) (((a_Reg) >> 14) & 0x1)
126	/** Redirection table entry - Gets the interrupt pin polarity. */
127	#define IOAPIC_RTE_GET_POLARITY(a_Reg) (((a_Reg) >> 13) & 0x1)
128	/** Redirection table entry - Gets the delivery status. */
129	#define IOAPIC_RTE_GET_DELIVERY_STATUS(a_Reg) (((a_Reg) >> 12) & 0x1)
130	/** Redirection table entry - Gets the destination mode. */
131	#define IOAPIC_RTE_GET_DEST_MODE(a_Reg) (((a_Reg) >> 11) & 0x1)
132	/** Redirection table entry - Gets the delivery mode. */
133	#define IOAPIC_RTE_GET_DELIVERY_MODE(a_Reg) (((a_Reg) >> 8) & 0x7)
134	/** Redirection table entry - Gets the vector. */
135	#define IOAPIC_RTE_GET_VECTOR(a_Reg) ((a_Reg) & IOAPIC_RTE_VECTOR)
136
137	#if IOAPIC_HARDWARE_VERSION == IOAPIC_HARDWARE_VERSION_82093AA
138	/** Redirection table entry - Valid write mask. */
139	#define IOAPIC_RTE_VALID_WRITE_MASK ( IOAPIC_RTE_DEST \| IOAPIC_RTE_MASK \| IOAPIC_RTE_TRIGGER_MODE \
140	\| IOAPIC_RTE_POLARITY \| IOAPIC_RTE_DEST_MODE \| IOAPIC_RTE_DELIVERY_MODE \
141	\| IOAPIC_RTE_VECTOR)
142	/** Redirection table entry - Valid read mask. */
143	# define IOAPIC_RTE_VALID_READ_MASK ( IOAPIC_RTE_DEST \| IOAPIC_RTE_MASK \| IOAPIC_RTE_TRIGGER_MODE \
144	\| IOAPIC_RTE_REMOTE_IRR \| IOAPIC_RTE_POLARITY \| IOAPIC_RTE_DELIVERY_STATUS \
145	\| IOAPIC_RTE_DEST_MODE \| IOAPIC_RTE_DELIVERY_MODE \| IOAPIC_RTE_VECTOR)
146	#elif IOAPIC_HARDWARE_VERSION == IOAPIC_HARDWARE_VERSION_ICH9
147	/** Redirection table entry - Valid write mask (incl. remote IRR). */
148	/** @note The remote IRR bit has been reverted to read-only as it turns out the
149	* ICH9 spec. is wrong, see @bugref{8386#c46}. */
150	#define IOAPIC_RTE_VALID_WRITE_MASK ( IOAPIC_RTE_DEST \| IOAPIC_RTE_MASK \| IOAPIC_RTE_TRIGGER_MODE \
151	/\| IOAPIC_RTE_REMOTE_IRR /\| IOAPIC_RTE_POLARITY \| IOAPIC_RTE_DEST_MODE \
152	\| IOAPIC_RTE_DELIVERY_MODE \| IOAPIC_RTE_VECTOR)
153	/** Redirection table entry - Valid read mask (incl. ExtDestID). */
154	# define IOAPIC_RTE_VALID_READ_MASK ( IOAPIC_RTE_DEST \| IOAPIC_RTE_EXT_DEST_ID \| IOAPIC_RTE_MASK \
155	\| IOAPIC_RTE_TRIGGER_MODE \| IOAPIC_RTE_REMOTE_IRR \| IOAPIC_RTE_POLARITY \
156	\| IOAPIC_RTE_DELIVERY_STATUS \| IOAPIC_RTE_DEST_MODE \| IOAPIC_RTE_DELIVERY_MODE \
157	\| IOAPIC_RTE_VECTOR)
158	#endif
159	/** Redirection table entry - Trigger mode edge. */
160	#define IOAPIC_RTE_TRIGGER_MODE_EDGE 0
161	/** Redirection table entry - Trigger mode level. */
162	#define IOAPIC_RTE_TRIGGER_MODE_LEVEL 1
163	/** Redirection table entry - Destination mode physical. */
164	#define IOAPIC_RTE_DEST_MODE_PHYSICAL 0
165	/** Redirection table entry - Destination mode logical. */
166	#define IOAPIC_RTE_DEST_MODE_LOGICAL 1
167
168
169	/** Index of indirect registers in the I/O APIC register table. */
170	#define IOAPIC_INDIRECT_INDEX_ID 0x0
171	#define IOAPIC_INDIRECT_INDEX_VERSION 0x1
172	#if IOAPIC_HARDWARE_VERSION == IOAPIC_HARDWARE_VERSION_82093AA
173	# define IOAPIC_INDIRECT_INDEX_ARB 0x2
174	#endif
175	#define IOAPIC_INDIRECT_INDEX_REDIR_TBL_START 0x10
176	#define IOAPIC_INDIRECT_INDEX_REDIR_TBL_END 0x3F
177
178	/** Offset of direct registers in the I/O APIC MMIO space. */
179	#define IOAPIC_DIRECT_OFF_INDEX 0x00
180	#define IOAPIC_DIRECT_OFF_DATA 0x10
181	#if IOAPIC_HARDWARE_VERSION == IOAPIC_HARDWARE_VERSION_ICH9
182	# define IOAPIC_DIRECT_OFF_EOI 0x40
183	#endif
184
185	/* Use PDM critsect for now for I/O APIC locking, see @bugref{8245#c121}. */
186	#define IOAPIC_WITH_PDM_CRITSECT
187	#ifdef IOAPIC_WITH_PDM_CRITSECT
188	# define IOAPIC_LOCK(pThis, rcBusy) (pThis)->CTX_SUFF(pIoApicHlp)->pfnLock((pThis)->CTX_SUFF(pDevIns), (rcBusy))
189	# define IOAPIC_UNLOCK(pThis) (pThis)->CTX_SUFF(pIoApicHlp)->pfnUnlock((pThis)->CTX_SUFF(pDevIns))
190	#else
191	# define IOAPIC_LOCK(pThis, rcBusy) PDMCritSectEnter(&(pThis)->CritSect, (rcBusy))
192	# define IOAPIC_UNLOCK(pThis) PDMCritSectLeave(&(pThis)->CritSect)
193	#endif
194
195
196	/*********************************************************************************************************************************
197	* Structures and Typedefs *
198	*********************************************************************************************************************************/
199	/**
200	* The per-VM I/O APIC device state.
201	*/
202	typedef struct IOAPIC
203	{
204	/** The device instance - R3 Ptr. */
205	PPDMDEVINSR3 pDevInsR3;
206	/** The IOAPIC helpers - R3 Ptr. */
207	PCPDMIOAPICHLPR3 pIoApicHlpR3;
208
209	/** The device instance - R0 Ptr. */
210	PPDMDEVINSR0 pDevInsR0;
211	/** The IOAPIC helpers - R0 Ptr. */
212	PCPDMIOAPICHLPR0 pIoApicHlpR0;
213
214	/** The device instance - RC Ptr. */
215	PPDMDEVINSRC pDevInsRC;
216	/** The IOAPIC helpers - RC Ptr. */
217	PCPDMIOAPICHLPRC pIoApicHlpRC;
218
219	/** The ID register. */
220	uint8_t volatile u8Id;
221	/** The index register. */
222	uint8_t volatile u8Index;
223	/** Number of CPUs. */
224	uint8_t cCpus;
225	/* Alignment padding. */
226	uint8_t u8Padding0[5];
227
228	/** The redirection table registers. */
229	uint64_t au64RedirTable[IOAPIC_NUM_INTR_PINS];
230	/** The IRQ tags and source IDs for each pin (tracing purposes). */
231	uint32_t au32TagSrc[IOAPIC_NUM_INTR_PINS];
232
233	/** Alignment padding. */
234	uint32_t u32Padding2;
235	/** The internal IRR reflecting state of the interrupt lines. */
236	uint32_t uIrr;
237
238	#ifndef IOAPIC_WITH_PDM_CRITSECT
239	/** The critsect for updating to the RTEs. */
240	PDMCRITSECT CritSect;
241	#endif
242
243	#ifdef VBOX_WITH_STATISTICS
244	/** Number of MMIO reads in RZ. */
245	STAMCOUNTER StatMmioReadRZ;
246	/** Number of MMIO reads in R3. */
247	STAMCOUNTER StatMmioReadR3;
248
249	/** Number of MMIO writes in RZ. */
250	STAMCOUNTER StatMmioWriteRZ;
251	/** Number of MMIO writes in R3. */
252	STAMCOUNTER StatMmioWriteR3;
253
254	/** Number of SetIrq calls in RZ. */
255	STAMCOUNTER StatSetIrqRZ;
256	/** Number of SetIrq calls in R3. */
257	STAMCOUNTER StatSetIrqR3;
258
259	/** Number of SetEoi calls in RZ. */
260	STAMCOUNTER StatSetEoiRZ;
261	/** Number of SetEoi calls in R3. */
262	STAMCOUNTER StatSetEoiR3;
263
264	/** Number of redundant edge-triggered interrupts. */
265	STAMCOUNTER StatRedundantEdgeIntr;
266	/** Number of redundant level-triggered interrupts. */
267	STAMCOUNTER StatRedundantLevelIntr;
268	/** Number of suppressed level-triggered interrupts (by remote IRR). */
269	STAMCOUNTER StatSuppressedLevelIntr;
270	/** Number of returns to ring-3 due to EOI broadcast lock contention. */
271	STAMCOUNTER StatEoiContention;
272	/** Number of returns to ring-3 due to Set RTE lock contention. */
273	STAMCOUNTER StatSetRteContention;
274	/** Number of level-triggered interrupts dispatched to the local APIC(s). */
275	STAMCOUNTER StatLevelIrqSent;
276	/** Number of EOIs received for level-triggered interrupts from the local
277	* APIC(s). */
278	STAMCOUNTER StatEoiReceived;
279	#endif
280	} IOAPIC;
281	/** Pointer to IOAPIC data. */
282	typedef IOAPIC *PIOAPIC;
283	/** Pointer to a const IOAPIC data. */
284	typedef IOAPIC const *PCIOAPIC;
285	AssertCompileMemberAlignment(IOAPIC, au64RedirTable, 8);
286
287	#ifndef VBOX_DEVICE_STRUCT_TESTCASE
288
289	#if IOAPIC_HARDWARE_VERSION == IOAPIC_HARDWARE_VERSION_82093AA
290	/**
291	* Gets the arbitration register.
292	*
293	* @returns The arbitration.
294	*/
295	DECLINLINE(uint32_t) ioapicGetArb(void)
296	{
297	Log2(("IOAPIC: ioapicGetArb: returns 0\n"));
298	return 0;
299	}
300	#endif
301
302
303	/**
304	* Gets the version register.
305	*
306	* @returns The version.
307	*/
308	DECLINLINE(uint32_t) ioapicGetVersion(void)
309	{
310	uint32_t uValue = RT_MAKE_U32(IOAPIC_VERSION, IOAPIC_MAX_REDIR_ENTRIES);
311	Log2(("IOAPIC: ioapicGetVersion: returns %#RX32\n", uValue));
312	return uValue;
313	}
314
315
316	/**
317	* Sets the ID register.
318	*
319	* @param pThis Pointer to the IOAPIC instance.
320	* @param uValue The value to set.
321	*/
322	DECLINLINE(void) ioapicSetId(PIOAPIC pThis, uint32_t uValue)
323	{
324	Log2(("IOAPIC: ioapicSetId: uValue=%#RX32\n", uValue));
325	ASMAtomicWriteU8(&pThis->u8Id, (uValue >> 24) & IOAPIC_ID_MASK);
326	}
327
328
329	/**
330	* Gets the ID register.
331	*
332	* @returns The ID.
333	* @param pThis Pointer to the IOAPIC instance.
334	*/
335	DECLINLINE(uint32_t) ioapicGetId(PCIOAPIC pThis)
336	{
337	uint32_t uValue = (uint32_t)(pThis->u8Id & IOAPIC_ID_MASK) << 24;
338	Log2(("IOAPIC: ioapicGetId: returns %#RX32\n", uValue));
339	return uValue;
340	}
341
342
343	/**
344	* Sets the index register.
345	*
346	* @param pThis Pointer to the IOAPIC instance.
347	* @param uValue The value to set.
348	*/
349	DECLINLINE(void) ioapicSetIndex(PIOAPIC pThis, uint32_t uValue)
350	{
351	LogFlow(("IOAPIC: ioapicSetIndex: uValue=%#RX32\n", uValue));
352	ASMAtomicWriteU8(&pThis->u8Index, uValue & IOAPIC_INDEX_VALID_WRITE_MASK);
353	}
354
355
356	/**
357	* Gets the index register.
358	*
359	* @returns The index value.
360	*/
361	DECLINLINE(uint32_t) ioapicGetIndex(PCIOAPIC pThis)
362	{
363	uint32_t const uValue = pThis->u8Index;
364	LogFlow(("IOAPIC: ioapicGetIndex: returns %#x\n", uValue));
365	return uValue;
366	}
367
368
369	/**
370	* Signals the next pending interrupt for the specified Redirection Table Entry
371	* (RTE).
372	*
373	* @param pThis The IOAPIC instance.
374	* @param idxRte The index of the RTE.
375	*
376	* @remarks It is the responsibility of the caller to verify that an interrupt is
377	* pending for the pin corresponding to the RTE before calling this
378	* function.
379	*/
380	static void ioapicSignalIntrForRte(PIOAPIC pThis, uint8_t idxRte)
381	{
382	#ifndef IOAPIC_WITH_PDM_CRITSECT
383	Assert(PDMCritSectIsOwner(&pThis->CritSect));
384	#endif
385
386	/* Ensure the RTE isn't masked. */
387	uint64_t const u64Rte = pThis->au64RedirTable[idxRte];
388	if (!IOAPIC_RTE_IS_MASKED(u64Rte))
389	{
390	/* We cannot accept another level-triggered interrupt until remote IRR has been cleared. */
391	uint8_t const u8TriggerMode = IOAPIC_RTE_GET_TRIGGER_MODE(u64Rte);
392	if (u8TriggerMode == IOAPIC_RTE_TRIGGER_MODE_LEVEL)
393	{
394	uint8_t const u8RemoteIrr = IOAPIC_RTE_GET_REMOTE_IRR(u64Rte);
395	if (u8RemoteIrr)
396	{
397	STAM_COUNTER_INC(&pThis->StatSuppressedLevelIntr);
398	return;
399	}
400	}
401
402	uint8_t const u8Vector = IOAPIC_RTE_GET_VECTOR(u64Rte);
403	uint8_t const u8DeliveryMode = IOAPIC_RTE_GET_DELIVERY_MODE(u64Rte);
404	uint8_t const u8DestMode = IOAPIC_RTE_GET_DEST_MODE(u64Rte);
405	uint8_t const u8Polarity = IOAPIC_RTE_GET_POLARITY(u64Rte);
406	uint8_t const u8Dest = IOAPIC_RTE_GET_DEST(u64Rte);
407	uint32_t const u32TagSrc = pThis->au32TagSrc[idxRte];
408
409	Log2(("IOAPIC: Signaling %s-triggered interrupt. Dest=%#x DestMode=%s Vector=%#x (%u)\n",
410	u8TriggerMode == IOAPIC_RTE_TRIGGER_MODE_EDGE ? "edge" : "level", u8Dest,
411	u8DestMode == IOAPIC_RTE_DEST_MODE_PHYSICAL ? "physical" : "logical", u8Vector, u8Vector));
412
413	/*
414	* Deliver to the local APIC via the system/3-wire-APIC bus.
415	*/
416	int rc = pThis->CTX_SUFF(pIoApicHlp)->pfnApicBusDeliver(pThis->CTX_SUFF(pDevIns),
417	u8Dest,
418	u8DestMode,
419	u8DeliveryMode,
420	u8Vector,
421	u8Polarity,
422	u8TriggerMode,
423	u32TagSrc);
424	/* Can't reschedule to R3. */
425	Assert(rc == VINF_SUCCESS \|\| rc == VERR_APIC_INTR_DISCARDED);
426	#ifdef DEBUG_ramshankar
427	if (rc == VERR_APIC_INTR_DISCARDED)
428	AssertMsgFailed(("APIC: Interrupt discarded u8Vector=%#x (%u) u64Rte=%#RX64\n", u8Vector, u8Vector, u64Rte));
429	#endif
430
431	/*
432	* For level-triggered interrupts, we set the remote IRR bit to indicate
433	* the local APIC has accepted the interrupt.
434	*
435	* For edge-triggered interrupts, we should not clear the IRR bit as it
436	* should remain intact to reflect the state of the interrupt line.
437	* The device will explicitly transition to inactive state via the
438	* ioapicSetIrq() callback.
439	*/
440	if ( u8TriggerMode == IOAPIC_RTE_TRIGGER_MODE_LEVEL
441	&& rc == VINF_SUCCESS)
442	{
443	Assert(u8TriggerMode == IOAPIC_RTE_TRIGGER_MODE_LEVEL);
444	pThis->au64RedirTable[idxRte] \|= IOAPIC_RTE_REMOTE_IRR;
445	STAM_COUNTER_INC(&pThis->StatLevelIrqSent);
446	}
447	}
448	}
449
450
451	/**
452	* Gets the redirection table entry.
453	*
454	* @returns The redirection table entry.
455	* @param pThis Pointer to the IOAPIC instance.
456	* @param uIndex The index value.
457	*/
458	DECLINLINE(uint32_t) ioapicGetRedirTableEntry(PCIOAPIC pThis, uint32_t uIndex)
459	{
460	uint8_t const idxRte = (uIndex - IOAPIC_INDIRECT_INDEX_REDIR_TBL_START) >> 1;
461	uint32_t uValue;
462	if (!(uIndex & 1))
463	uValue = RT_LO_U32(pThis->au64RedirTable[idxRte]) & RT_LO_U32(IOAPIC_RTE_VALID_READ_MASK);
464	else
465	uValue = RT_HI_U32(pThis->au64RedirTable[idxRte]) & RT_HI_U32(IOAPIC_RTE_VALID_READ_MASK);
466
467	LogFlow(("IOAPIC: ioapicGetRedirTableEntry: uIndex=%#RX32 idxRte=%u returns %#RX32\n", uIndex, idxRte, uValue));
468	return uValue;
469	}
470
471
472	/**
473	* Sets the redirection table entry.
474	*
475	* @param pThis Pointer to the IOAPIC instance.
476	* @param uIndex The index value.
477	* @param uValue The value to set.
478	*/
479	static int ioapicSetRedirTableEntry(PIOAPIC pThis, uint32_t uIndex, uint32_t uValue)
480	{
481	uint8_t const idxRte = (uIndex - IOAPIC_INDIRECT_INDEX_REDIR_TBL_START) >> 1;
482	AssertMsg(idxRte < RT_ELEMENTS(pThis->au64RedirTable), ("Invalid index %u, expected <= %u\n", idxRte,
483	RT_ELEMENTS(pThis->au64RedirTable)));
484
485	int rc = IOAPIC_LOCK(pThis, VINF_IOM_R3_MMIO_WRITE);
486	if (rc == VINF_SUCCESS)
487	{
488	/*
489	* Write the low or high 32-bit value into the specified 64-bit RTE register,
490	* update only the valid, writable bits.
491	*
492	* We need to preserve the read-only bits as it can have dire consequences
493	* otherwise, see @bugref{8386#c24}.
494	*/
495	uint64_t const u64Rte = pThis->au64RedirTable[idxRte];
496	if (!(uIndex & 1))
497	{
498	uint32_t const u32RtePreserveLo = RT_LO_U32(u64Rte) & ~RT_LO_U32(IOAPIC_RTE_VALID_WRITE_MASK);
499	uint32_t const u32RteNewLo = (uValue & RT_LO_U32(IOAPIC_RTE_VALID_WRITE_MASK)) \| u32RtePreserveLo;
500	uint64_t const u64RteHi = u64Rte & UINT64_C(0xffffffff00000000);
501	pThis->au64RedirTable[idxRte] = u64RteHi \| u32RteNewLo;
502	}
503	else
504	{
505	uint32_t const u32RtePreserveHi = RT_HI_U32(u64Rte) & ~RT_HI_U32(IOAPIC_RTE_VALID_WRITE_MASK);
506	uint32_t const u32RteLo = RT_LO_U32(u64Rte);
507	uint64_t const u64RteNewHi = ((uint64_t)((uValue & RT_HI_U32(IOAPIC_RTE_VALID_WRITE_MASK)) \| u32RtePreserveHi) << 32);
508	pThis->au64RedirTable[idxRte] = u64RteNewHi \| u32RteLo;
509	}
510
511	/*
512	* Signal the next pending interrupt for this RTE.
513	*/
514	uint32_t const uPinMask = UINT32_C(1) << idxRte;
515	if (pThis->uIrr & uPinMask)
516	ioapicSignalIntrForRte(pThis, idxRte);
517
518	IOAPIC_UNLOCK(pThis);
519	LogFlow(("IOAPIC: ioapicSetRedirTableEntry: uIndex=%#RX32 idxRte=%u uValue=%#RX32\n", uIndex, idxRte, uValue));
520	}
521	else
522	STAM_COUNTER_INC(&pThis->StatSetRteContention);
523
524	return rc;
525	}
526
527
528	/**
529	* Gets the data register.
530	*
531	* @returns The data value.
532	* @param pThis Pointer to the IOAPIC instance.
533	*/
534	static uint32_t ioapicGetData(PCIOAPIC pThis)
535	{
536	uint8_t const uIndex = pThis->u8Index;
537	if ( uIndex >= IOAPIC_INDIRECT_INDEX_REDIR_TBL_START
538	&& uIndex <= IOAPIC_INDIRECT_INDEX_REDIR_TBL_END)
539	return ioapicGetRedirTableEntry(pThis, uIndex);
540
541	uint32_t uValue;
542	switch (uIndex)
543	{
544	case IOAPIC_INDIRECT_INDEX_ID:
545	uValue = ioapicGetId(pThis);
546	break;
547
548	case IOAPIC_INDIRECT_INDEX_VERSION:
549	uValue = ioapicGetVersion();
550	break;
551
552	#if IOAPIC_HARDWARE_VERSION == IOAPIC_HARDWARE_VERSION_82093AA
553	case IOAPIC_INDIRECT_INDEX_ARB:
554	uValue = ioapicGetArb();
555	break;
556	#endif
557
558	default:
559	uValue = UINT32_C(0xffffffff);
560	Log2(("IOAPIC: Attempt to read register at invalid index %#x\n", uIndex));
561	break;
562	}
563	return uValue;
564	}
565
566
567	/**
568	* Sets the data register.
569	*
570	* @param pThis Pointer to the IOAPIC instance.
571	* @param uValue The value to set.
572	*/
573	static int ioapicSetData(PIOAPIC pThis, uint32_t uValue)
574	{
575	uint8_t const uIndex = pThis->u8Index;
576	LogFlow(("IOAPIC: ioapicSetData: uIndex=%#x uValue=%#RX32\n", uIndex, uValue));
577
578	if ( uIndex >= IOAPIC_INDIRECT_INDEX_REDIR_TBL_START
579	&& uIndex <= IOAPIC_INDIRECT_INDEX_REDIR_TBL_END)
580	return ioapicSetRedirTableEntry(pThis, uIndex, uValue);
581
582	if (uIndex == IOAPIC_INDIRECT_INDEX_ID)
583	ioapicSetId(pThis, uValue);
584	else
585	Log2(("IOAPIC: ioapicSetData: Invalid index %#RX32, ignoring write request with uValue=%#RX32\n", uIndex, uValue));
586
587	return VINF_SUCCESS;
588	}
589
590
591	/**
592	* @interface_method_impl{PDMIOAPICREG,pfnSetEoiR3}
593	*/
594	PDMBOTHCBDECL(int) ioapicSetEoi(PPDMDEVINS pDevIns, uint8_t u8Vector)
595	{
596	PIOAPIC pThis = PDMINS_2_DATA(pDevIns, PIOAPIC);
597	STAM_COUNTER_INC(&pThis->CTX_SUFF_Z(StatSetEoi));
598	LogFlow(("IOAPIC: ioapicSetEoi: u8Vector=%#x (%u)\n", u8Vector, u8Vector));
599
600	bool fRemoteIrrCleared = false;
601	int rc = IOAPIC_LOCK(pThis, VINF_IOM_R3_MMIO_WRITE);
602	if (rc == VINF_SUCCESS)
603	{
604	for (uint8_t idxRte = 0; idxRte < RT_ELEMENTS(pThis->au64RedirTable); idxRte++)
605	{
606	uint64_t const u64Rte = pThis->au64RedirTable[idxRte];
607	if (IOAPIC_RTE_GET_VECTOR(u64Rte) == u8Vector)
608	{
609	#ifdef DEBUG_ramshankar
610	/* This assertion may trigger when restoring saved-states created using the old, incorrect I/O APIC code. */
611	Assert(IOAPIC_RTE_GET_REMOTE_IRR(u64Rte));
612	#endif
613	pThis->au64RedirTable[idxRte] &= ~IOAPIC_RTE_REMOTE_IRR;
614	fRemoteIrrCleared = true;
615	STAM_COUNTER_INC(&pThis->StatEoiReceived);
616	Log2(("IOAPIC: ioapicSetEoi: Cleared remote IRR, idxRte=%u vector=%#x (%u)\n", idxRte, u8Vector, u8Vector));
617
618	/*
619	* Signal the next pending interrupt for this RTE.
620	*/
621	uint32_t const uPinMask = UINT32_C(1) << idxRte;
622	if (pThis->uIrr & uPinMask)
623	ioapicSignalIntrForRte(pThis, idxRte);
624	}
625	}
626
627	IOAPIC_UNLOCK(pThis);
628	AssertMsg(fRemoteIrrCleared, ("Failed to clear remote IRR for vector %#x (%u)\n", u8Vector, u8Vector));
629	}
630	else
631	STAM_COUNTER_INC(&pThis->StatEoiContention);
632
633	return rc;
634	}
635
636
637	/**
638	* @interface_method_impl{PDMIOAPICREG,pfnSetIrqR3}
639	*/
640	PDMBOTHCBDECL(void) ioapicSetIrq(PPDMDEVINS pDevIns, int iIrq, int iLevel, uint32_t uTagSrc)
641	{
642	#define IOAPIC_ASSERT_IRQ(a_idxRte, a_PinMask) do { \
643	pThis->au32TagSrc[(a_idxRte)] = !pThis->au32TagSrc[(a_idxRte)] ? uTagSrc : RT_BIT_32(31); \
644	pThis->uIrr \|= a_PinMask; \
645	ioapicSignalIntrForRte(pThis, (a_idxRte)); \
646	} while (0)
647
648	PIOAPIC pThis = PDMINS_2_DATA(pDevIns, PIOAPIC);
649	LogFlow(("IOAPIC: ioapicSetIrq: iIrq=%d iLevel=%d uTagSrc=%#x\n", iIrq, iLevel, uTagSrc));
650
651	STAM_COUNTER_INC(&pThis->CTX_SUFF_Z(StatSetIrq));
652
653	if (RT_LIKELY(iIrq >= 0 && iIrq < (int)RT_ELEMENTS(pThis->au64RedirTable)))
654	{
655	int rc = IOAPIC_LOCK(pThis, VINF_SUCCESS);
656	AssertRC(rc);
657
658	uint8_t const idxRte = iIrq;
659	uint32_t const uPinMask = UINT32_C(1) << idxRte;
660	uint32_t const u32RteLo = RT_LO_U32(pThis->au64RedirTable[idxRte]);
661	uint8_t const u8TriggerMode = IOAPIC_RTE_GET_TRIGGER_MODE(u32RteLo);
662
663	bool fActive = RT_BOOL(iLevel & 1);
664	/** @todo Polarity is busted elsewhere, we need to fix that
665	* first. See @bugref{8386#c7}. */
666	#if 0
667	uint8_t const u8Polarity = IOAPIC_RTE_GET_POLARITY(u32RteLo);
668	fActive ^= u8Polarity; */
669	#endif
670	if (!fActive)
671	{
672	pThis->uIrr &= ~uPinMask;
673	IOAPIC_UNLOCK(pThis);
674	return;
675	}
676
677	bool const fFlipFlop = ((iLevel & PDM_IRQ_LEVEL_FLIP_FLOP) == PDM_IRQ_LEVEL_FLIP_FLOP);
678	uint32_t const uPrevIrr = pThis->uIrr & uPinMask;
679	if (!fFlipFlop)
680	{
681	if (u8TriggerMode == IOAPIC_RTE_TRIGGER_MODE_EDGE)
682	{
683	/*
684	* For edge-triggered interrupts, we need to act only on a low to high edge transition.
685	* See ICH9 spec. 13.5.7 "REDIR_TBL: Redirection Table (LPC I/F-D31:F0)".
686	*/
687	if (!uPrevIrr)
688	IOAPIC_ASSERT_IRQ(idxRte, uPinMask);
689	else
690	{
691	STAM_COUNTER_INC(&pThis->StatRedundantEdgeIntr);
692	Log2(("IOAPIC: Redundant edge-triggered interrupt %#x (%u)\n", idxRte, idxRte));
693	}
694	}
695	else
696	{
697	Assert(u8TriggerMode == IOAPIC_RTE_TRIGGER_MODE_LEVEL);
698
699	/*
700	* For level-triggered interrupts, redundant interrupts are not a problem
701	* and will eventually be delivered anyway after an EOI, but our PDM devices
702	* should not typically call us with no change to the level.
703	*/
704	if (!uPrevIrr)
705	{ /* likely */ }
706	else
707	{
708	STAM_COUNTER_INC(&pThis->StatRedundantLevelIntr);
709	Log2(("IOAPIC: Redundant level-triggered interrupt %#x (%u)\n", idxRte, idxRte));
710	}
711
712	IOAPIC_ASSERT_IRQ(idxRte, uPinMask);
713	}
714	}
715	else
716	{
717	/*
718	* The device is flip-flopping the interrupt line, which implies we should de-assert
719	* and assert the interrupt line. The interrupt line is left in the asserted state
720	* after a flip-flop request. The de-assert is a NOP wrts to signaling an interrupt
721	* hence just the assert is done.
722	*/
723	IOAPIC_ASSERT_IRQ(idxRte, uPinMask);
724	}
725
726	IOAPIC_UNLOCK(pThis);
727	}
728	#undef IOAPIC_ASSERT_IRQ
729	}
730
731
732	/**
733	* @interface_method_impl{PDMIOAPICREG,pfnSendMsiR3}
734	*/
735	PDMBOTHCBDECL(void) ioapicSendMsi(PPDMDEVINS pDevIns, RTGCPHYS GCPhys, uint32_t uValue, uint32_t uTagSrc)
736	{
737	PCIOAPIC pThis = PDMINS_2_DATA(pDevIns, PCIOAPIC);
738	LogFlow(("IOAPIC: ioapicSendMsi: GCPhys=%#RGp uValue=%#RX32\n", GCPhys, uValue));
739
740	/*
741	* Parse the message from the physical address.
742	* See Intel spec. 10.11.1 "Message Address Register Format".
743	*/
744	uint8_t const u8DestAddr = (GCPhys & VBOX_MSI_ADDR_DEST_ID_MASK) >> VBOX_MSI_ADDR_DEST_ID_SHIFT;
745	uint8_t const u8DestMode = (GCPhys >> VBOX_MSI_ADDR_DEST_MODE_SHIFT) & 0x1;
746	/** @todo Check if we need to implement Redirection Hint Indicator. */
747	/* uint8_t const uRedirectHint = (GCPhys >> VBOX_MSI_ADDR_REDIRECTION_SHIFT) & 0x1; */
748
749	/*
750	* Parse the message data.
751	* See Intel spec. 10.11.2 "Message Data Register Format".
752	*/
753	uint8_t const u8Vector = (uValue & VBOX_MSI_DATA_VECTOR_MASK) >> VBOX_MSI_DATA_VECTOR_SHIFT;
754	uint8_t const u8TriggerMode = (uValue >> VBOX_MSI_DATA_TRIGGER_SHIFT) & 0x1;
755	uint8_t const u8DeliveryMode = (uValue >> VBOX_MSI_DATA_DELIVERY_MODE_SHIFT) & 0x7;
756
757	/*
758	* Deliver to the local APIC via the system/3-wire-APIC bus.
759	*/
760	int rc = pThis->CTX_SUFF(pIoApicHlp)->pfnApicBusDeliver(pDevIns,
761	u8DestAddr,
762	u8DestMode,
763	u8DeliveryMode,
764	u8Vector,
765	0 /* u8Polarity - N/A */,
766	u8TriggerMode,
767	uTagSrc);
768	/* Can't reschedule to R3. */
769	Assert(rc == VINF_SUCCESS \|\| rc == VERR_APIC_INTR_DISCARDED); NOREF(rc);
770	}
771
772
773	/**
774	* @callback_method_impl{FNIOMMMIOREAD}
775	*/
776	PDMBOTHCBDECL(int) ioapicMmioRead(PPDMDEVINS pDevIns, void pvUser, RTGCPHYS GCPhysAddr, void pv, unsigned cb)
777	{
778	PIOAPIC pThis = PDMINS_2_DATA(pDevIns, PIOAPIC);
779	STAM_COUNTER_INC(&pThis->CTX_SUFF_Z(StatMmioRead));
780	Assert(cb == 4); RT_NOREF_PV(cb); /* registered for dwords only */
781	RT_NOREF_PV(pvUser);
782
783	int rc = VINF_SUCCESS;
784	uint32_t puValue = (uint32_t )pv;
785	uint32_t offReg = GCPhysAddr & IOAPIC_MMIO_REG_MASK;
786	switch (offReg)
787	{
788	case IOAPIC_DIRECT_OFF_INDEX:
789	*puValue = ioapicGetIndex(pThis);
790	break;
791
792	case IOAPIC_DIRECT_OFF_DATA:
793	*puValue = ioapicGetData(pThis);
794	break;
795
796	default:
797	Log2(("IOAPIC: ioapicMmioRead: Invalid offset. GCPhysAddr=%#RGp offReg=%#x\n", GCPhysAddr, offReg));
798	rc = VINF_IOM_MMIO_UNUSED_FF;
799	break;
800	}
801
802	LogFlow(("IOAPIC: ioapicMmioRead: offReg=%#x, returns %#RX32\n", offReg, *puValue));
803	return rc;
804	}
805
806
807	/**
808	* @callback_method_impl{FNIOMMMIOWRITE}
809	*/
810	PDMBOTHCBDECL(int) ioapicMmioWrite(PPDMDEVINS pDevIns, void pvUser, RTGCPHYS GCPhysAddr, void const pv, unsigned cb)
811	{
812	PIOAPIC pThis = PDMINS_2_DATA(pDevIns, PIOAPIC);
813	RT_NOREF_PV(pvUser);
814
815	STAM_COUNTER_INC(&pThis->CTX_SUFF_Z(StatMmioWrite));
816
817	Assert(!(GCPhysAddr & 3));
818	Assert(cb == 4); RT_NOREF_PV(cb); /* registered for dwords only */
819
820	uint32_t const uValue = (uint32_t const )pv;
821	uint32_t const offReg = GCPhysAddr & IOAPIC_MMIO_REG_MASK;
822
823	LogFlow(("IOAPIC: ioapicMmioWrite: pThis=%p GCPhysAddr=%#RGp cb=%u uValue=%#RX32\n", pThis, GCPhysAddr, cb, uValue));
824	int rc = VINF_SUCCESS;
825	switch (offReg)
826	{
827	case IOAPIC_DIRECT_OFF_INDEX:
828	ioapicSetIndex(pThis, uValue);
829	break;
830
831	case IOAPIC_DIRECT_OFF_DATA:
832	rc = ioapicSetData(pThis, uValue);
833	break;
834
835	#if IOAPIC_HARDWARE_VERSION == IOAPIC_HARDWARE_VERSION_ICH9
836	case IOAPIC_DIRECT_OFF_EOI:
837	rc = ioapicSetEoi(pDevIns, uValue);
838	break;
839	#endif
840
841	default:
842	Log2(("IOAPIC: ioapicMmioWrite: Invalid offset. GCPhysAddr=%#RGp offReg=%#x\n", GCPhysAddr, offReg));
843	break;
844	}
845
846	return rc;
847	}
848
849
850	#ifdef IN_RING3
851
852	/** @interface_method_impl{DBGFREGDESC,pfnGet} */
853	static DECLCALLBACK(int) ioapicDbgReg_GetIndex(void *pvUser, PCDBGFREGDESC pDesc, PDBGFREGVAL pValue)
854	{
855	RT_NOREF(pDesc);
856	pValue->u32 = ioapicGetIndex(PDMINS_2_DATA((PPDMDEVINS)pvUser, PCIOAPIC));
857	return VINF_SUCCESS;
858	}
859
860
861	/** @interface_method_impl{DBGFREGDESC,pfnSet} */
862	static DECLCALLBACK(int) ioapicDbgReg_SetIndex(void *pvUser, PCDBGFREGDESC pDesc, PCDBGFREGVAL pValue, PCDBGFREGVAL pfMask)
863	{
864	RT_NOREF(pDesc, pfMask);
865	ioapicSetIndex(PDMINS_2_DATA((PPDMDEVINS)pvUser, PIOAPIC), pValue->u8);
866	return VINF_SUCCESS;
867	}
868
869
870	/** @interface_method_impl{DBGFREGDESC,pfnGet} */
871	static DECLCALLBACK(int) ioapicDbgReg_GetData(void *pvUser, PCDBGFREGDESC pDesc, PDBGFREGVAL pValue)
872	{
873	RT_NOREF(pDesc);
874	pValue->u32 = ioapicGetData((PDMINS_2_DATA((PPDMDEVINS)pvUser, PCIOAPIC)));
875	return VINF_SUCCESS;
876	}
877
878
879	/** @interface_method_impl{DBGFREGDESC,pfnSet} */
880	static DECLCALLBACK(int) ioapicDbgReg_SetData(void *pvUser, PCDBGFREGDESC pDesc, PCDBGFREGVAL pValue, PCDBGFREGVAL pfMask)
881	{
882	RT_NOREF(pDesc, pfMask);
883	return ioapicSetData(PDMINS_2_DATA((PPDMDEVINS)pvUser, PIOAPIC), pValue->u32);
884	}
885
886
887	/** @interface_method_impl{DBGFREGDESC,pfnGet} */
888	static DECLCALLBACK(int) ioapicDbgReg_GetVersion(void *pvUser, PCDBGFREGDESC pDesc, PDBGFREGVAL pValue)
889	{
890	RT_NOREF(pvUser, pDesc);
891	pValue->u32 = ioapicGetVersion();
892	return VINF_SUCCESS;
893	}
894
895
896	# if IOAPIC_HARDWARE_VERSION == IOAPIC_HARDWARE_VERSION_82093AA
897	/** @interface_method_impl{DBGFREGDESC,pfnGetArb} */
898	static DECLCALLBACK(int) ioapicDbgReg_GetArb(void *pvUser, PCDBGFREGDESC pDesc, PDBGFREGVAL pValue)
899	{
900	RT_NOREF(pvUser, pDesc);
901	pValue->u32 = ioapicGetArb(PDMINS_2_DATA((PPDMDEVINS)pvUser, PCIOAPIC));
902	return VINF_SUCCESS;
903	}
904	#endif
905
906
907	/** @interface_method_impl{DBGFREGDESC,pfnGet} */
908	static DECLCALLBACK(int) ioapicDbgReg_GetRte(void *pvUser, PCDBGFREGDESC pDesc, PDBGFREGVAL pValue)
909	{
910	PCIOAPIC pThis = PDMINS_2_DATA((PPDMDEVINS)pvUser, PCIOAPIC);
911	Assert(pDesc->offRegister < RT_ELEMENTS(pThis->au64RedirTable));
912	pValue->u64 = pThis->au64RedirTable[pDesc->offRegister];
913	return VINF_SUCCESS;
914	}
915
916
917	/** @interface_method_impl{DBGFREGDESC,pfnSet} */
918	static DECLCALLBACK(int) ioapicDbgReg_SetRte(void *pvUser, PCDBGFREGDESC pDesc, PCDBGFREGVAL pValue, PCDBGFREGVAL pfMask)
919	{
920	RT_NOREF(pfMask);
921	PIOAPIC pThis = PDMINS_2_DATA((PPDMDEVINS)pvUser, PIOAPIC);
922	/* No locks, no checks, just do it. */
923	Assert(pDesc->offRegister < RT_ELEMENTS(pThis->au64RedirTable));
924	pThis->au64RedirTable[pDesc->offRegister] = pValue->u64;
925	return VINF_SUCCESS;
926	}
927
928
929	/** IOREDTBLn sub fields. */
930	static DBGFREGSUBFIELD const g_aRteSubs[] =
931	{
932	{ "vector", 0, 8, 0, 0, NULL, NULL },
933	{ "dlvr_mode", 8, 3, 0, 0, NULL, NULL },
934	{ "dest_mode", 11, 1, 0, 0, NULL, NULL },
935	{ "dlvr_status", 12, 1, 0, DBGFREGSUBFIELD_FLAGS_READ_ONLY, NULL, NULL },
936	{ "polarity", 13, 1, 0, 0, NULL, NULL },
937	{ "remote_irr", 14, 1, 0, DBGFREGSUBFIELD_FLAGS_READ_ONLY, NULL, NULL },
938	{ "trigger_mode", 15, 1, 0, 0, NULL, NULL },
939	{ "mask", 16, 1, 0, 0, NULL, NULL },
940	# if IOAPIC_HARDWARE_VERSION == IOAPIC_HARDWARE_VERSION_ICH9
941	{ "ext_dest_id", 48, 8, 0, DBGFREGSUBFIELD_FLAGS_READ_ONLY, NULL, NULL },
942	# endif
943	{ "dest", 56, 8, 0, 0, NULL, NULL },
944	DBGFREGSUBFIELD_TERMINATOR()
945	};
946
947
948	/** Register descriptors for DBGF. */
949	static DBGFREGDESC const g_aRegDesc[] =
950	{
951	{ "index", DBGFREG_END, DBGFREGVALTYPE_U8, 0, 0, ioapicDbgReg_GetIndex, ioapicDbgReg_SetIndex, NULL, NULL },
952	{ "data", DBGFREG_END, DBGFREGVALTYPE_U32, 0, 0, ioapicDbgReg_GetData, ioapicDbgReg_SetData, NULL, NULL },
953	{ "version", DBGFREG_END, DBGFREGVALTYPE_U32, DBGFREG_FLAGS_READ_ONLY, 0, ioapicDbgReg_GetVersion, NULL, NULL, NULL },
954	# if IOAPIC_HARDWARE_VERSION == IOAPIC_HARDWARE_VERSION_82093AA
955	{ "arb", DBGFREG_END, DBGFREGVALTYPE_U32, DBGFREG_FLAGS_READ_ONLY, 0, ioapicDbgReg_GetArb, NULL, NULL, NULL },
956	# endif
957	{ "rte0", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 0, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
958	{ "rte1", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 1, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
959	{ "rte2", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 2, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
960	{ "rte3", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 3, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
961	{ "rte4", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 4, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
962	{ "rte5", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 5, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
963	{ "rte6", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 6, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
964	{ "rte7", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 7, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
965	{ "rte8", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 8, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
966	{ "rte9", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 9, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
967	{ "rte10", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 10, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
968	{ "rte11", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 11, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
969	{ "rte12", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 12, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
970	{ "rte13", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 13, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
971	{ "rte14", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 14, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
972	{ "rte15", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 15, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
973	{ "rte16", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 16, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
974	{ "rte17", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 17, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
975	{ "rte18", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 18, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
976	{ "rte19", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 19, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
977	{ "rte20", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 20, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
978	{ "rte21", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 21, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
979	{ "rte22", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 22, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
980	{ "rte23", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 23, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
981	DBGFREGDESC_TERMINATOR()
982	};
983
984
985	/**
986	* @callback_method_impl{FNDBGFHANDLERDEV}
987	*/
988	static DECLCALLBACK(void) ioapicR3DbgInfo(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs)
989	{
990	RT_NOREF(pszArgs);
991	PCIOAPIC pThis = PDMINS_2_DATA(pDevIns, PIOAPIC);
992	LogFlow(("IOAPIC: ioapicR3DbgInfo: pThis=%p pszArgs=%s\n", pThis, pszArgs));
993
994	pHlp->pfnPrintf(pHlp, "I/O APIC at %#010x:\n", IOAPIC_MMIO_BASE_PHYSADDR);
995
996	uint32_t const uId = ioapicGetId(pThis);
997	pHlp->pfnPrintf(pHlp, " ID = %#RX32\n", uId);
998	pHlp->pfnPrintf(pHlp, " ID = %#x\n", IOAPIC_ID_GET_ID(uId));
999
1000	uint32_t const uVer = ioapicGetVersion();
1001	pHlp->pfnPrintf(pHlp, " Version = %#RX32\n", uVer);
1002	pHlp->pfnPrintf(pHlp, " Version = %#x\n", IOAPIC_VER_GET_VER(uVer));
1003	pHlp->pfnPrintf(pHlp, " Pin Assert Reg. Support = %RTbool\n", IOAPIC_VER_HAS_PRQ(uVer));
1004	pHlp->pfnPrintf(pHlp, " Max. Redirection Entry = %u\n", IOAPIC_VER_GET_MRE(uVer));
1005
1006	# if IOAPIC_HARDWARE_VERSION == IOAPIC_HARDWARE_VERSION_82093AA
1007	uint32_t const uArb = ioapicGetArb();
1008	pHlp->pfnPrintf(pHlp, " Arbitration = %#RX32\n", uArb);
1009	pHlp->pfnPrintf(pHlp, " Arbitration ID = %#x\n", IOAPIC_ARB_GET_ID(uArb));
1010	# endif
1011
1012	pHlp->pfnPrintf(pHlp, " Current index = %#x\n", ioapicGetIndex(pThis));
1013
1014	pHlp->pfnPrintf(pHlp, " I/O Redirection Table and IRR:\n");
1015	pHlp->pfnPrintf(pHlp, " idx dst_mode dst_addr mask irr trigger rirr polar dlvr_st dlvr_mode vector\n");
1016
1017	for (uint8_t idxRte = 0; idxRte < RT_ELEMENTS(pThis->au64RedirTable); idxRte++)
1018	{
1019	static const char * const s_apszDeliveryModes[] =
1020	{
1021	"Fixed ",
1022	"LowPri",
1023	"SMI ",
1024	"Rsvd ",
1025	"NMI ",
1026	"INIT ",
1027	"Rsvd ",
1028	"ExtINT"
1029	};
1030
1031	const uint64_t u64Rte = pThis->au64RedirTable[idxRte];
1032	const char *pszDestMode = IOAPIC_RTE_GET_DEST_MODE(u64Rte) == 0 ? "phys" : "log ";
1033	const uint8_t uDest = IOAPIC_RTE_GET_DEST(u64Rte);
1034	const uint8_t uMask = IOAPIC_RTE_GET_MASK(u64Rte);
1035	const char *pszTriggerMode = IOAPIC_RTE_GET_TRIGGER_MODE(u64Rte) == 0 ? "edge " : "level";
1036	const uint8_t uRemoteIrr = IOAPIC_RTE_GET_REMOTE_IRR(u64Rte);
1037	const char *pszPolarity = IOAPIC_RTE_GET_POLARITY(u64Rte) == 0 ? "acthi" : "actlo";
1038	const char *pszDeliveryStatus = IOAPIC_RTE_GET_DELIVERY_STATUS(u64Rte) == 0 ? "idle" : "pend";
1039	const uint8_t uDeliveryMode = IOAPIC_RTE_GET_DELIVERY_MODE(u64Rte);
1040	Assert(uDeliveryMode < RT_ELEMENTS(s_apszDeliveryModes));
1041	const char *pszDeliveryMode = s_apszDeliveryModes[uDeliveryMode];
1042	const uint8_t uVector = IOAPIC_RTE_GET_VECTOR(u64Rte);
1043
1044	pHlp->pfnPrintf(pHlp, " %02d %s %02x %u %u %s %u %s %s %s %3u (%016llx)\n",
1045	idxRte,
1046	pszDestMode,
1047	uDest,
1048	uMask,
1049	(pThis->uIrr >> idxRte) & 1,
1050	pszTriggerMode,
1051	uRemoteIrr,
1052	pszPolarity,
1053	pszDeliveryStatus,
1054	pszDeliveryMode,
1055	uVector,
1056	u64Rte);
1057	}
1058	}
1059
1060
1061	/**
1062	* @copydoc FNSSMDEVSAVEEXEC
1063	*/
1064	static DECLCALLBACK(int) ioapicR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1065	{
1066	PCIOAPIC pThis = PDMINS_2_DATA(pDevIns, PCIOAPIC);
1067	LogFlow(("IOAPIC: ioapicR3SaveExec\n"));
1068
1069	SSMR3PutU32(pSSM, pThis->uIrr);
1070	SSMR3PutU8(pSSM, pThis->u8Id);
1071	SSMR3PutU8(pSSM, pThis->u8Index);
1072	for (uint8_t idxRte = 0; idxRte < RT_ELEMENTS(pThis->au64RedirTable); idxRte++)
1073	SSMR3PutU64(pSSM, pThis->au64RedirTable[idxRte]);
1074
1075	return VINF_SUCCESS;
1076	}
1077
1078
1079	/**
1080	* @copydoc FNSSMDEVLOADEXEC
1081	*/
1082	static DECLCALLBACK(int) ioapicR3LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
1083	{
1084	PIOAPIC pThis = PDMINS_2_DATA(pDevIns, PIOAPIC);
1085	LogFlow(("APIC: apicR3LoadExec: uVersion=%u uPass=%#x\n", uVersion, uPass));
1086
1087	Assert(uPass == SSM_PASS_FINAL);
1088	NOREF(uPass);
1089
1090	/* Weed out invalid versions. */
1091	if ( uVersion != IOAPIC_SAVED_STATE_VERSION
1092	&& uVersion != IOAPIC_SAVED_STATE_VERSION_VBOX_50)
1093	{
1094	LogRel(("IOAPIC: ioapicR3LoadExec: Invalid/unrecognized saved-state version %u (%#x)\n", uVersion, uVersion));
1095	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
1096	}
1097
1098	if (uVersion == IOAPIC_SAVED_STATE_VERSION)
1099	SSMR3GetU32(pSSM, (uint32_t *)&pThis->uIrr);
1100
1101	SSMR3GetU8(pSSM, (uint8_t *)&pThis->u8Id);
1102	SSMR3GetU8(pSSM, (uint8_t *)&pThis->u8Index);
1103	for (uint8_t idxRte = 0; idxRte < RT_ELEMENTS(pThis->au64RedirTable); idxRte++)
1104	SSMR3GetU64(pSSM, &pThis->au64RedirTable[idxRte]);
1105
1106	return VINF_SUCCESS;
1107	}
1108
1109
1110	/**
1111	* @interface_method_impl{PDMDEVREG,pfnReset}
1112	*/
1113	static DECLCALLBACK(void) ioapicR3Reset(PPDMDEVINS pDevIns)
1114	{
1115	PIOAPIC pThis = PDMINS_2_DATA(pDevIns, PIOAPIC);
1116	LogFlow(("IOAPIC: ioapicR3Reset: pThis=%p\n", pThis));
1117
1118	/* There might be devices threads calling ioapicSetIrq() in parallel, hence the lock. */
1119	IOAPIC_LOCK(pThis, VERR_IGNORED);
1120
1121	pThis->uIrr = 0;
1122	pThis->u8Index = 0;
1123	pThis->u8Id = 0;
1124
1125	for (uint8_t idxRte = 0; idxRte < RT_ELEMENTS(pThis->au64RedirTable); idxRte++)
1126	{
1127	pThis->au64RedirTable[idxRte] = IOAPIC_RTE_MASK;
1128	pThis->au32TagSrc[idxRte] = 0;
1129	}
1130
1131	IOAPIC_UNLOCK(pThis);
1132	}
1133
1134
1135	/**
1136	* @interface_method_impl{PDMDEVREG,pfnRelocate}
1137	*/
1138	static DECLCALLBACK(void) ioapicR3Relocate(PPDMDEVINS pDevIns, RTGCINTPTR offDelta)
1139	{
1140	RT_NOREF(offDelta);
1141	PIOAPIC pThis = PDMINS_2_DATA(pDevIns, PIOAPIC);
1142	LogFlow(("IOAPIC: ioapicR3Relocate: pThis=%p offDelta=%RGi\n", pThis, offDelta));
1143
1144	pThis->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
1145	pThis->pIoApicHlpRC = pThis->pIoApicHlpR3->pfnGetRCHelpers(pDevIns);
1146	}
1147
1148
1149	/**
1150	* @interface_method_impl{PDMDEVREG,pfnDestruct}
1151	*/
1152	static DECLCALLBACK(int) ioapicR3Destruct(PPDMDEVINS pDevIns)
1153	{
1154	PIOAPIC pThis = PDMINS_2_DATA(pDevIns, PIOAPIC);
1155	LogFlow(("IOAPIC: ioapicR3Destruct: pThis=%p\n", pThis));
1156	PDMDEV_CHECK_VERSIONS_RETURN_QUIET(pDevIns);
1157
1158	# ifndef IOAPIC_WITH_PDM_CRITSECT
1159	/*
1160	* Destroy the RTE critical section.
1161	*/
1162	if (PDMCritSectIsInitialized(&pThis->CritSect))
1163	PDMR3CritSectDelete(&pThis->CritSect);
1164	# else
1165	RT_NOREF_PV(pThis);
1166	# endif
1167
1168	return VINF_SUCCESS;
1169	}
1170
1171
1172	/**
1173	* @interface_method_impl{PDMDEVREG,pfnConstruct}
1174	*/
1175	static DECLCALLBACK(int) ioapicR3Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
1176	{
1177	RT_NOREF(iInstance);
1178	PIOAPIC pThis = PDMINS_2_DATA(pDevIns, PIOAPIC);
1179	LogFlow(("IOAPIC: ioapicR3Construct: pThis=%p iInstance=%d\n", pThis, iInstance));
1180	Assert(iInstance == 0);
1181
1182	/*
1183	* Initialize the state data.
1184	*/
1185	pThis->pDevInsR3 = pDevIns;
1186	pThis->pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
1187	pThis->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
1188
1189	/*
1190	* Validate and read the configuration.
1191	*/
1192	PDMDEV_VALIDATE_CONFIG_RETURN(pDevIns, "NumCPUs\|RZEnabled", "");
1193
1194	/* The number of CPUs is currently unused, but left in CFGM and saved-state in case an ID of 0 is
1195	upsets some guest which we haven't yet tested. */
1196	uint32_t cCpus;
1197	int rc = CFGMR3QueryU32Def(pCfg, "NumCPUs", &cCpus, 1);
1198	if (RT_FAILURE(rc))
1199	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to query integer value \"NumCPUs\""));
1200	pThis->cCpus = (uint8_t)cCpus;
1201
1202	bool fRZEnabled;
1203	rc = CFGMR3QueryBoolDef(pCfg, "RZEnabled", &fRZEnabled, true);
1204	if (RT_FAILURE(rc))
1205	return PDMDEV_SET_ERROR(pDevIns, rc,
1206	N_("Configuration error: Failed to query boolean value \"RZEnabled\""));
1207
1208	Log2(("IOAPIC: cCpus=%u fRZEnabled=%RTbool\n", cCpus, fRZEnabled));
1209
1210	/*
1211	* We will use our own critical section for the IOAPIC device.
1212	*/
1213	rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns));
1214	AssertRCReturn(rc, rc);
1215
1216	# ifndef IOAPIC_WITH_PDM_CRITSECT
1217	/*
1218	* Setup the critical section to protect concurrent writes to the RTEs.
1219	*/
1220	rc = PDMDevHlpCritSectInit(pDevIns, &pThis->CritSect, RT_SRC_POS, "IOAPIC");
1221	if (RT_FAILURE(rc))
1222	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS, N_("IOAPIC: Failed to create critical section. rc=%Rrc"), rc);
1223	# endif
1224
1225	/*
1226	* Register the IOAPIC.
1227	*/
1228	PDMIOAPICREG IoApicReg;
1229	RT_ZERO(IoApicReg);
1230	IoApicReg.u32Version = PDM_IOAPICREG_VERSION;
1231	IoApicReg.pfnSetIrqR3 = ioapicSetIrq;
1232	IoApicReg.pfnSendMsiR3 = ioapicSendMsi;
1233	IoApicReg.pfnSetEoiR3 = ioapicSetEoi;
1234	if (fRZEnabled)
1235	{
1236	IoApicReg.pszSetIrqRC = "ioapicSetIrq";
1237	IoApicReg.pszSetIrqR0 = "ioapicSetIrq";
1238
1239	IoApicReg.pszSendMsiRC = "ioapicSendMsi";
1240	IoApicReg.pszSendMsiR0 = "ioapicSendMsi";
1241
1242	IoApicReg.pszSetEoiRC = "ioapicSetEoi";
1243	IoApicReg.pszSetEoiR0 = "ioapicSetEoi";
1244	}
1245	rc = PDMDevHlpIOAPICRegister(pDevIns, &IoApicReg, &pThis->pIoApicHlpR3);
1246	if (RT_FAILURE(rc))
1247	{
1248	AssertMsgFailed(("IOAPIC: PDMDevHlpIOAPICRegister failed! rc=%Rrc\n", rc));
1249	return rc;
1250	}
1251
1252	/*
1253	* Register MMIO callbacks.
1254	*/
1255	rc = PDMDevHlpMMIORegister(pDevIns, IOAPIC_MMIO_BASE_PHYSADDR, IOAPIC_MMIO_SIZE, pThis,
1256	IOMMMIO_FLAGS_READ_DWORD \| IOMMMIO_FLAGS_WRITE_DWORD_ZEROED, ioapicMmioWrite, ioapicMmioRead,
1257	"I/O APIC");
1258	if (RT_SUCCESS(rc))
1259	{
1260	if (fRZEnabled)
1261	{
1262	pThis->pIoApicHlpRC = pThis->pIoApicHlpR3->pfnGetRCHelpers(pDevIns);
1263	rc = PDMDevHlpMMIORegisterRC(pDevIns, IOAPIC_MMIO_BASE_PHYSADDR, IOAPIC_MMIO_SIZE, NIL_RTRCPTR /* pvUser */,
1264	"ioapicMmioWrite", "ioapicMmioRead");
1265	AssertRCReturn(rc, rc);
1266
1267	pThis->pIoApicHlpR0 = pThis->pIoApicHlpR3->pfnGetR0Helpers(pDevIns);
1268	rc = PDMDevHlpMMIORegisterR0(pDevIns, IOAPIC_MMIO_BASE_PHYSADDR, IOAPIC_MMIO_SIZE, NIL_RTR0PTR /* pvUser */,
1269	"ioapicMmioWrite", "ioapicMmioRead");
1270	AssertRCReturn(rc, rc);
1271	}
1272	}
1273	else
1274	{
1275	LogRel(("IOAPIC: PDMDevHlpMMIORegister failed! rc=%Rrc\n", rc));
1276	return rc;
1277	}
1278
1279	/*
1280	* Register saved-state callbacks.
1281	*/
1282	rc = PDMDevHlpSSMRegister(pDevIns, IOAPIC_SAVED_STATE_VERSION, sizeof(*pThis), ioapicR3SaveExec, ioapicR3LoadExec);
1283	if (RT_FAILURE(rc))
1284	{
1285	LogRel(("IOAPIC: PDMDevHlpSSMRegister failed! rc=%Rrc\n", rc));
1286	return rc;
1287	}
1288
1289	/*
1290	* Register debugger info callback.
1291	*/
1292	rc = PDMDevHlpDBGFInfoRegister(pDevIns, "ioapic", "Display IO APIC state.", ioapicR3DbgInfo);
1293	AssertRCReturn(rc, rc);
1294
1295	/*
1296	* Register debugger register access.
1297	*/
1298	rc = PDMDevHlpDBGFRegRegister(pDevIns, g_aRegDesc); AssertRC(rc);
1299	AssertRCReturn(rc, rc);
1300
1301	# ifdef VBOX_WITH_STATISTICS
1302	/*
1303	* Statistics.
1304	*/
1305	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatMmioReadRZ, STAMTYPE_COUNTER, "/Devices/IOAPIC/RZ/MmioReadRZ", STAMUNIT_OCCURENCES, "Number of IOAPIC MMIO reads in RZ.");
1306	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatMmioWriteRZ, STAMTYPE_COUNTER, "/Devices/IOAPIC/RZ/MmioWriteRZ", STAMUNIT_OCCURENCES, "Number of IOAPIC MMIO writes in RZ.");
1307	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatSetIrqRZ, STAMTYPE_COUNTER, "/Devices/IOAPIC/RZ/SetIrqRZ", STAMUNIT_OCCURENCES, "Number of IOAPIC SetIrq calls in RZ.");
1308	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatSetEoiRZ, STAMTYPE_COUNTER, "/Devices/IOAPIC/RZ/SetEoiRZ", STAMUNIT_OCCURENCES, "Number of IOAPIC SetEoi calls in RZ.");
1309
1310	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatMmioReadR3, STAMTYPE_COUNTER, "/Devices/IOAPIC/R3/MmioReadR3", STAMUNIT_OCCURENCES, "Number of IOAPIC MMIO reads in R3");
1311	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatMmioWriteR3, STAMTYPE_COUNTER, "/Devices/IOAPIC/R3/MmioWriteR3", STAMUNIT_OCCURENCES, "Number of IOAPIC MMIO writes in R3.");
1312	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatSetIrqR3, STAMTYPE_COUNTER, "/Devices/IOAPIC/R3/SetIrqR3", STAMUNIT_OCCURENCES, "Number of IOAPIC SetIrq calls in R3.");
1313	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatSetEoiR3, STAMTYPE_COUNTER, "/Devices/IOAPIC/R3/SetEoiR3", STAMUNIT_OCCURENCES, "Number of IOAPIC SetEoi calls in R3.");
1314
1315	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatRedundantEdgeIntr, STAMTYPE_COUNTER, "/Devices/IOAPIC/RedundantEdgeIntr", STAMUNIT_OCCURENCES, "Number of redundant edge-triggered interrupts (no IRR change).");
1316	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatRedundantLevelIntr, STAMTYPE_COUNTER, "/Devices/IOAPIC/RedundantLevelIntr", STAMUNIT_OCCURENCES, "Number of redundant level-triggered interrupts (no IRR change).");
1317	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatSuppressedLevelIntr, STAMTYPE_COUNTER, "/Devices/IOAPIC/SuppressedLevelIntr", STAMUNIT_OCCURENCES, "Number of suppressed level-triggered interrupts by remote IRR.");
1318
1319	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatEoiContention, STAMTYPE_COUNTER, "/Devices/IOAPIC/CritSect/ContentionSetEoi", STAMUNIT_OCCURENCES, "Number of times the critsect is busy during EOI writes causing trips to R3.");
1320	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatSetRteContention, STAMTYPE_COUNTER, "/Devices/IOAPIC/CritSect/ContentionSetRte", STAMUNIT_OCCURENCES, "Number of times the critsect is busy during RTE writes causing trips to R3.");
1321
1322	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatLevelIrqSent, STAMTYPE_COUNTER, "/Devices/IOAPIC/LevelIntr/Sent", STAMUNIT_OCCURENCES, "Number of level-triggered interrupts sent to the local APIC(s).");
1323	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatEoiReceived, STAMTYPE_COUNTER, "/Devices/IOAPIC/LevelIntr/Recv", STAMUNIT_OCCURENCES, "Number of EOIs received for level-triggered interrupts from the local APIC(s).");
1324	# endif
1325
1326	/*
1327	* Init. the device state.
1328	*/
1329	LogRel(("IOAPIC: Using implementation 2.0!\n"));
1330	ioapicR3Reset(pDevIns);
1331
1332	return VINF_SUCCESS;
1333	}
1334
1335
1336	/**
1337	* IO APIC device registration structure.
1338	*/
1339	const PDMDEVREG g_DeviceIOAPIC =
1340	{
1341	/* u32Version */
1342	PDM_DEVREG_VERSION,
1343	/* szName */
1344	"ioapic",
1345	/* szRCMod */
1346	"VBoxDDRC.rc",
1347	/* szR0Mod */
1348	"VBoxDDR0.r0",
1349	/* pszDescription */
1350	"I/O Advanced Programmable Interrupt Controller (IO-APIC) Device",
1351	/* fFlags */
1352	PDM_DEVREG_FLAGS_HOST_BITS_DEFAULT \| PDM_DEVREG_FLAGS_GUEST_BITS_32_64 \| PDM_DEVREG_FLAGS_PAE36
1353	\| PDM_DEVREG_FLAGS_RC \| PDM_DEVREG_FLAGS_R0,
1354	/* fClass */
1355	PDM_DEVREG_CLASS_PIC,
1356	/* cMaxInstances */
1357	1,
1358	/* cbInstance */
1359	sizeof(IOAPIC),
1360	/* pfnConstruct */
1361	ioapicR3Construct,
1362	/* pfnDestruct */
1363	ioapicR3Destruct,
1364	/* pfnRelocate */
1365	ioapicR3Relocate,
1366	/* pfnMemSetup */
1367	NULL,
1368	/* pfnPowerOn */
1369	NULL,
1370	/* pfnReset */
1371	ioapicR3Reset,
1372	/* pfnSuspend */
1373	NULL,
1374	/* pfnResume */
1375	NULL,
1376	/* pfnAttach */
1377	NULL,
1378	/* pfnDetach */
1379	NULL,
1380	/* pfnQueryInterface. */
1381	NULL,
1382	/* pfnInitComplete */
1383	NULL,
1384	/* pfnPowerOff */
1385	NULL,
1386	/* pfnSoftReset */
1387	NULL,
1388	/* u32VersionEnd */
1389	PDM_DEVREG_VERSION
1390	};
1391
1392	#endif /* IN_RING3 */
1393
1394	#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */
1395

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source: vbox/trunk/src/VBox/Devices/PC/DevIoApic.cpp@ 63618

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