DevIoApic.cpp@ 72063

Last change on this file since 72063 was 71853, checked in by vboxsync, 7 years ago
DevIoApic.cpp: paranoia
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1	/* $Id: DevIoApic.cpp 71853 2018-04-12 15:43:55Z vboxsync $ */
2	/** @file
3	* IO APIC - Input/Output Advanced Programmable Interrupt Controller.
4	*/
5
6	/*
7	* Copyright (C) 2016-2017 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_VERSION_ICH9 0x20
44	/** Implementation specified by the "82093AA I/O Advanced Programmable Interrupt
45	Controller" */
46	#define IOAPIC_VERSION_82093AA 0x11
47
48	/** The default MMIO base physical address. */
49	#define IOAPIC_MMIO_BASE_PHYSADDR UINT64_C(0xfec00000)
50	/** The size of the MMIO range. */
51	#define IOAPIC_MMIO_SIZE X86_PAGE_4K_SIZE
52	/** The mask for getting direct registers from physical address. */
53	#define IOAPIC_MMIO_REG_MASK 0xff
54
55	/** The number of interrupt input pins. */
56	#define IOAPIC_NUM_INTR_PINS 24
57	/** Maximum redirection entires. */
58	#define IOAPIC_MAX_RTE_INDEX (IOAPIC_NUM_INTR_PINS - 1)
59	/** Reduced RTEs used by SIO.A (82379AB). */
60	#define IOAPIC_REDUCED_MAX_RTE_INDEX (16 - 1)
61
62	/** Version register - Gets the version. */
63	#define IOAPIC_VER_GET_VER(a_Reg) ((a_Reg) & 0xff)
64	/** Version register - Gets the maximum redirection entry. */
65	#define IOAPIC_VER_GET_MRE(a_Reg) (((a_Reg) >> 16) & 0xff)
66	/** Version register - Gets whether Pin Assertion Register (PRQ) is
67	* supported. */
68	#define IOAPIC_VER_HAS_PRQ(a_Reg) RT_BOOL((a_Reg) & RT_BIT_32(15))
69
70	/** Index register - Valid write mask. */
71	#define IOAPIC_INDEX_VALID_WRITE_MASK UINT32_C(0xff)
72
73	/** Arbitration register - Gets the ID. */
74	#define IOAPIC_ARB_GET_ID(a_Reg) ((a_Reg) >> 24 & 0xf)
75
76	/** ID register - Gets the ID. */
77	#define IOAPIC_ID_GET_ID(a_Reg) ((a_Reg) >> 24 & 0xff)
78
79	/** Redirection table entry - Vector. */
80	#define IOAPIC_RTE_VECTOR UINT64_C(0xff)
81	/** Redirection table entry - Delivery mode. */
82	#define IOAPIC_RTE_DELIVERY_MODE (RT_BIT_64(8) \| RT_BIT_64(9) \| RT_BIT_64(10))
83	/** Redirection table entry - Destination mode. */
84	#define IOAPIC_RTE_DEST_MODE RT_BIT_64(11)
85	/** Redirection table entry - Delivery status. */
86	#define IOAPIC_RTE_DELIVERY_STATUS RT_BIT_64(12)
87	/** Redirection table entry - Interrupt input pin polarity. */
88	#define IOAPIC_RTE_POLARITY RT_BIT_64(13)
89	/** Redirection table entry - Remote IRR. */
90	#define IOAPIC_RTE_REMOTE_IRR RT_BIT_64(14)
91	/** Redirection table entry - Trigger Mode. */
92	#define IOAPIC_RTE_TRIGGER_MODE RT_BIT_64(15)
93	/** Redirection table entry - the mask bit number. */
94	#define IOAPIC_RTE_MASK_BIT 16
95	/** Redirection table entry - the mask. */
96	#define IOAPIC_RTE_MASK RT_BIT_64(IOAPIC_RTE_MASK_BIT)
97	/** Redirection table entry - Extended Destination ID. */
98	#define IOAPIC_RTE_EXT_DEST_ID UINT64_C(0x00ff000000000000)
99	/** Redirection table entry - Destination. */
100	#define IOAPIC_RTE_DEST UINT64_C(0xff00000000000000)
101
102	/** Redirection table entry - Gets the destination. */
103	#define IOAPIC_RTE_GET_DEST(a_Reg) ((a_Reg) >> 56 & 0xff)
104	/** Redirection table entry - Gets the mask flag. */
105	#define IOAPIC_RTE_GET_MASK(a_Reg) (((a_Reg) >> IOAPIC_RTE_MASK_BIT) & 0x1)
106	/** Redirection table entry - Checks whether it's masked. */
107	#define IOAPIC_RTE_IS_MASKED(a_Reg) ((a_Reg) & IOAPIC_RTE_MASK)
108	/** Redirection table entry - Gets the trigger mode. */
109	#define IOAPIC_RTE_GET_TRIGGER_MODE(a_Reg) (((a_Reg) >> 15) & 0x1)
110	/** Redirection table entry - Gets the remote IRR flag. */
111	#define IOAPIC_RTE_GET_REMOTE_IRR(a_Reg) (((a_Reg) >> 14) & 0x1)
112	/** Redirection table entry - Gets the interrupt pin polarity. */
113	#define IOAPIC_RTE_GET_POLARITY(a_Reg) (((a_Reg) >> 13) & 0x1)
114	/** Redirection table entry - Gets the delivery status. */
115	#define IOAPIC_RTE_GET_DELIVERY_STATUS(a_Reg) (((a_Reg) >> 12) & 0x1)
116	/** Redirection table entry - Gets the destination mode. */
117	#define IOAPIC_RTE_GET_DEST_MODE(a_Reg) (((a_Reg) >> 11) & 0x1)
118	/** Redirection table entry - Gets the delivery mode. */
119	#define IOAPIC_RTE_GET_DELIVERY_MODE(a_Reg) (((a_Reg) >> 8) & 0x7)
120	/** Redirection table entry - Gets the vector. */
121	#define IOAPIC_RTE_GET_VECTOR(a_Reg) ((a_Reg) & IOAPIC_RTE_VECTOR)
122
123	/** Redirection table entry - Valid write mask for 82093AA. */
124	#define IOAPIC_RTE_VALID_WRITE_MASK_82093AA ( IOAPIC_RTE_DEST \| IOAPIC_RTE_MASK \| IOAPIC_RTE_TRIGGER_MODE \
125	\| IOAPIC_RTE_POLARITY \| IOAPIC_RTE_DEST_MODE \| IOAPIC_RTE_DELIVERY_MODE \
126	\| IOAPIC_RTE_VECTOR)
127	/** Redirection table entry - Valid read mask for 82093AA. */
128	#define IOAPIC_RTE_VALID_READ_MASK_82093AA ( IOAPIC_RTE_DEST \| IOAPIC_RTE_MASK \| IOAPIC_RTE_TRIGGER_MODE \
129	\| IOAPIC_RTE_REMOTE_IRR \| IOAPIC_RTE_POLARITY \| IOAPIC_RTE_DELIVERY_STATUS \
130	\| IOAPIC_RTE_DEST_MODE \| IOAPIC_RTE_DELIVERY_MODE \| IOAPIC_RTE_VECTOR)
131
132	/** Redirection table entry - Valid write mask for ICH9. */
133	/** @note The remote IRR bit has been reverted to read-only as it turns out the
134	* ICH9 spec. is wrong, see @bugref{8386#c46}. */
135	#define IOAPIC_RTE_VALID_WRITE_MASK_ICH9 ( IOAPIC_RTE_DEST \| IOAPIC_RTE_MASK \| IOAPIC_RTE_TRIGGER_MODE \
136	/\| IOAPIC_RTE_REMOTE_IRR /\| IOAPIC_RTE_POLARITY \| IOAPIC_RTE_DEST_MODE \
137	\| IOAPIC_RTE_DELIVERY_MODE \| IOAPIC_RTE_VECTOR)
138	/** Redirection table entry - Valid read mask (incl. ExtDestID) for ICH9. */
139	#define IOAPIC_RTE_VALID_READ_MASK_ICH9 ( IOAPIC_RTE_DEST \| IOAPIC_RTE_EXT_DEST_ID \| IOAPIC_RTE_MASK \
140	\| IOAPIC_RTE_TRIGGER_MODE \| IOAPIC_RTE_REMOTE_IRR \| IOAPIC_RTE_POLARITY \
141	\| IOAPIC_RTE_DELIVERY_STATUS \| IOAPIC_RTE_DEST_MODE \| IOAPIC_RTE_DELIVERY_MODE \
142	\| IOAPIC_RTE_VECTOR)
143
144	/** Redirection table entry - Trigger mode edge. */
145	#define IOAPIC_RTE_TRIGGER_MODE_EDGE 0
146	/** Redirection table entry - Trigger mode level. */
147	#define IOAPIC_RTE_TRIGGER_MODE_LEVEL 1
148	/** Redirection table entry - Destination mode physical. */
149	#define IOAPIC_RTE_DEST_MODE_PHYSICAL 0
150	/** Redirection table entry - Destination mode logical. */
151	#define IOAPIC_RTE_DEST_MODE_LOGICAL 1
152
153
154	/** Index of indirect registers in the I/O APIC register table. */
155	#define IOAPIC_INDIRECT_INDEX_ID 0x0
156	#define IOAPIC_INDIRECT_INDEX_VERSION 0x1
157	#define IOAPIC_INDIRECT_INDEX_ARB 0x2 /* Older I/O APIC only. */
158	#define IOAPIC_INDIRECT_INDEX_REDIR_TBL_START 0x10 /* First valid RTE register index. */
159	#define IOAPIC_INDIRECT_INDEX_RTE_END 0x3F /* Last valid RTE register index (24 RTEs). */
160	#define IOAPIC_REDUCED_INDIRECT_INDEX_RTE_END 0x2F /* Last valid RTE register index (16 RTEs). */
161
162	/** Offset of direct registers in the I/O APIC MMIO space. */
163	#define IOAPIC_DIRECT_OFF_INDEX 0x00
164	#define IOAPIC_DIRECT_OFF_DATA 0x10
165	#define IOAPIC_DIRECT_OFF_EOI 0x40 /* Newer I/O APIC only. */
166
167	/* Use PDM critsect for now for I/O APIC locking, see @bugref{8245#c121}. */
168	#define IOAPIC_WITH_PDM_CRITSECT
169	#ifdef IOAPIC_WITH_PDM_CRITSECT
170	# define IOAPIC_LOCK(pThis, rcBusy) (pThis)->CTX_SUFF(pIoApicHlp)->pfnLock((pThis)->CTX_SUFF(pDevIns), (rcBusy))
171	# define IOAPIC_UNLOCK(pThis) (pThis)->CTX_SUFF(pIoApicHlp)->pfnUnlock((pThis)->CTX_SUFF(pDevIns))
172	#else
173	# define IOAPIC_LOCK(pThis, rcBusy) PDMCritSectEnter(&(pThis)->CritSect, (rcBusy))
174	# define IOAPIC_UNLOCK(pThis) PDMCritSectLeave(&(pThis)->CritSect)
175	#endif
176
177
178	/*********************************************************************************************************************************
179	* Structures and Typedefs *
180	*********************************************************************************************************************************/
181	/**
182	* The per-VM I/O APIC device state.
183	*/
184	typedef struct IOAPIC
185	{
186	/** The device instance - R3 Ptr. */
187	PPDMDEVINSR3 pDevInsR3;
188	/** The IOAPIC helpers - R3 Ptr. */
189	PCPDMIOAPICHLPR3 pIoApicHlpR3;
190
191	/** The device instance - R0 Ptr. */
192	PPDMDEVINSR0 pDevInsR0;
193	/** The IOAPIC helpers - R0 Ptr. */
194	PCPDMIOAPICHLPR0 pIoApicHlpR0;
195
196	/** The device instance - RC Ptr. */
197	PPDMDEVINSRC pDevInsRC;
198	/** The IOAPIC helpers - RC Ptr. */
199	PCPDMIOAPICHLPRC pIoApicHlpRC;
200
201	/** The ID register. */
202	uint8_t volatile u8Id;
203	/** The index register. */
204	uint8_t volatile u8Index;
205	/** Number of CPUs. */
206	uint8_t cCpus;
207	/** I/O APIC version. */
208	uint8_t u8ApicVer;
209	/** I/O APIC ID mask. */
210	uint8_t u8IdMask;
211	/** Maximum Redirection Table Entry (RTE) Entry. */
212	uint8_t u8MaxRte;
213	/** Last valid RTE indirect register index. */
214	uint8_t u8LastRteRegIdx;
215	/* Alignment padding. */
216	uint8_t u8Padding0[1];
217	/** Redirection table entry - Valid write mask. */
218	uint64_t u64RteWriteMask;
219	/** Redirection table entry - Valid read mask. */
220	uint64_t u64RteReadMask;
221
222	/** The redirection table registers. */
223	uint64_t au64RedirTable[IOAPIC_NUM_INTR_PINS];
224	/** The IRQ tags and source IDs for each pin (tracing purposes). */
225	uint32_t au32TagSrc[IOAPIC_NUM_INTR_PINS];
226
227	/** Alignment padding. */
228	uint32_t u32Padding2;
229	/** The internal IRR reflecting state of the interrupt lines. */
230	uint32_t uIrr;
231
232	#ifndef IOAPIC_WITH_PDM_CRITSECT
233	/** The critsect for updating to the RTEs. */
234	PDMCRITSECT CritSect;
235	#endif
236
237	#ifdef VBOX_WITH_STATISTICS
238	/** Number of MMIO reads in RZ. */
239	STAMCOUNTER StatMmioReadRZ;
240	/** Number of MMIO reads in R3. */
241	STAMCOUNTER StatMmioReadR3;
242
243	/** Number of MMIO writes in RZ. */
244	STAMCOUNTER StatMmioWriteRZ;
245	/** Number of MMIO writes in R3. */
246	STAMCOUNTER StatMmioWriteR3;
247
248	/** Number of SetIrq calls in RZ. */
249	STAMCOUNTER StatSetIrqRZ;
250	/** Number of SetIrq calls in R3. */
251	STAMCOUNTER StatSetIrqR3;
252
253	/** Number of SetEoi calls in RZ. */
254	STAMCOUNTER StatSetEoiRZ;
255	/** Number of SetEoi calls in R3. */
256	STAMCOUNTER StatSetEoiR3;
257
258	/** Number of redundant edge-triggered interrupts. */
259	STAMCOUNTER StatRedundantEdgeIntr;
260	/** Number of redundant level-triggered interrupts. */
261	STAMCOUNTER StatRedundantLevelIntr;
262	/** Number of suppressed level-triggered interrupts (by remote IRR). */
263	STAMCOUNTER StatSuppressedLevelIntr;
264	/** Number of returns to ring-3 due to EOI broadcast lock contention. */
265	STAMCOUNTER StatEoiContention;
266	/** Number of returns to ring-3 due to Set RTE lock contention. */
267	STAMCOUNTER StatSetRteContention;
268	/** Number of level-triggered interrupts dispatched to the local APIC(s). */
269	STAMCOUNTER StatLevelIrqSent;
270	/** Number of EOIs received for level-triggered interrupts from the local
271	* APIC(s). */
272	STAMCOUNTER StatEoiReceived;
273	#endif
274	} IOAPIC;
275	/** Pointer to IOAPIC data. */
276	typedef IOAPIC *PIOAPIC;
277	/** Pointer to a const IOAPIC data. */
278	typedef IOAPIC const *PCIOAPIC;
279	AssertCompileMemberAlignment(IOAPIC, au64RedirTable, 8);
280
281	#ifndef VBOX_DEVICE_STRUCT_TESTCASE
282
283	/**
284	* Gets the arbitration register.
285	*
286	* @returns The arbitration.
287	*/
288	DECLINLINE(uint32_t) ioapicGetArb(void)
289	{
290	Log2(("IOAPIC: ioapicGetArb: returns 0\n"));
291	return 0;
292	}
293
294
295	/**
296	* Gets the version register.
297	*
298	* @returns The version.
299	*/
300	DECLINLINE(uint32_t) ioapicGetVersion(PCIOAPIC pThis)
301	{
302	uint32_t uValue = RT_MAKE_U32(pThis->u8ApicVer, pThis->u8MaxRte);
303	Log2(("IOAPIC: ioapicGetVersion: returns %#RX32\n", uValue));
304	return uValue;
305	}
306
307
308	/**
309	* Sets the ID register.
310	*
311	* @param pThis Pointer to the IOAPIC instance.
312	* @param uValue The value to set.
313	*/
314	DECLINLINE(void) ioapicSetId(PIOAPIC pThis, uint32_t uValue)
315	{
316	Log2(("IOAPIC: ioapicSetId: uValue=%#RX32\n", uValue));
317	ASMAtomicWriteU8(&pThis->u8Id, (uValue >> 24) & pThis->u8IdMask);
318	}
319
320
321	/**
322	* Gets the ID register.
323	*
324	* @returns The ID.
325	* @param pThis Pointer to the IOAPIC instance.
326	*/
327	DECLINLINE(uint32_t) ioapicGetId(PCIOAPIC pThis)
328	{
329	uint32_t uValue = (uint32_t)pThis->u8Id << 24;
330	Log2(("IOAPIC: ioapicGetId: returns %#RX32\n", uValue));
331	return uValue;
332	}
333
334
335	/**
336	* Sets the index register.
337	*
338	* @param pThis Pointer to the IOAPIC instance.
339	* @param uValue The value to set.
340	*/
341	DECLINLINE(void) ioapicSetIndex(PIOAPIC pThis, uint32_t uValue)
342	{
343	LogFlow(("IOAPIC: ioapicSetIndex: uValue=%#RX32\n", uValue));
344	ASMAtomicWriteU8(&pThis->u8Index, uValue & IOAPIC_INDEX_VALID_WRITE_MASK);
345	}
346
347
348	/**
349	* Gets the index register.
350	*
351	* @returns The index value.
352	*/
353	DECLINLINE(uint32_t) ioapicGetIndex(PCIOAPIC pThis)
354	{
355	uint32_t const uValue = pThis->u8Index;
356	LogFlow(("IOAPIC: ioapicGetIndex: returns %#x\n", uValue));
357	return uValue;
358	}
359
360
361	/**
362	* Signals the next pending interrupt for the specified Redirection Table Entry
363	* (RTE).
364	*
365	* @param pThis The IOAPIC instance.
366	* @param idxRte The index of the RTE.
367	*
368	* @remarks It is the responsibility of the caller to verify that an interrupt is
369	* pending for the pin corresponding to the RTE before calling this
370	* function.
371	*/
372	static void ioapicSignalIntrForRte(PIOAPIC pThis, uint8_t idxRte)
373	{
374	#ifndef IOAPIC_WITH_PDM_CRITSECT
375	Assert(PDMCritSectIsOwner(&pThis->CritSect));
376	#endif
377
378	/* Ensure the RTE isn't masked. */
379	uint64_t const u64Rte = pThis->au64RedirTable[idxRte];
380	if (!IOAPIC_RTE_IS_MASKED(u64Rte))
381	{
382	/* We cannot accept another level-triggered interrupt until remote IRR has been cleared. */
383	uint8_t const u8TriggerMode = IOAPIC_RTE_GET_TRIGGER_MODE(u64Rte);
384	if (u8TriggerMode == IOAPIC_RTE_TRIGGER_MODE_LEVEL)
385	{
386	uint8_t const u8RemoteIrr = IOAPIC_RTE_GET_REMOTE_IRR(u64Rte);
387	if (u8RemoteIrr)
388	{
389	STAM_COUNTER_INC(&pThis->StatSuppressedLevelIntr);
390	return;
391	}
392	}
393
394	uint8_t const u8Vector = IOAPIC_RTE_GET_VECTOR(u64Rte);
395	uint8_t const u8DeliveryMode = IOAPIC_RTE_GET_DELIVERY_MODE(u64Rte);
396	uint8_t const u8DestMode = IOAPIC_RTE_GET_DEST_MODE(u64Rte);
397	uint8_t const u8Polarity = IOAPIC_RTE_GET_POLARITY(u64Rte);
398	uint8_t const u8Dest = IOAPIC_RTE_GET_DEST(u64Rte);
399	uint32_t const u32TagSrc = pThis->au32TagSrc[idxRte];
400
401	Log2(("IOAPIC: Signaling %s-triggered interrupt. Dest=%#x DestMode=%s Vector=%#x (%u)\n",
402	u8TriggerMode == IOAPIC_RTE_TRIGGER_MODE_EDGE ? "edge" : "level", u8Dest,
403	u8DestMode == IOAPIC_RTE_DEST_MODE_PHYSICAL ? "physical" : "logical", u8Vector, u8Vector));
404
405	/*
406	* Deliver to the local APIC via the system/3-wire-APIC bus.
407	*/
408	int rc = pThis->CTX_SUFF(pIoApicHlp)->pfnApicBusDeliver(pThis->CTX_SUFF(pDevIns),
409	u8Dest,
410	u8DestMode,
411	u8DeliveryMode,
412	u8Vector,
413	u8Polarity,
414	u8TriggerMode,
415	u32TagSrc);
416	/* Can't reschedule to R3. */
417	Assert(rc == VINF_SUCCESS \|\| rc == VERR_APIC_INTR_DISCARDED);
418	#ifdef DEBUG_ramshankar
419	if (rc == VERR_APIC_INTR_DISCARDED)
420	AssertMsgFailed(("APIC: Interrupt discarded u8Vector=%#x (%u) u64Rte=%#RX64\n", u8Vector, u8Vector, u64Rte));
421	#endif
422
423	/*
424	* For level-triggered interrupts, we set the remote IRR bit to indicate
425	* the local APIC has accepted the interrupt.
426	*
427	* For edge-triggered interrupts, we should not clear the IRR bit as it
428	* should remain intact to reflect the state of the interrupt line.
429	* The device will explicitly transition to inactive state via the
430	* ioapicSetIrq() callback.
431	*/
432	if ( u8TriggerMode == IOAPIC_RTE_TRIGGER_MODE_LEVEL
433	&& rc == VINF_SUCCESS)
434	{
435	Assert(u8TriggerMode == IOAPIC_RTE_TRIGGER_MODE_LEVEL);
436	pThis->au64RedirTable[idxRte] \|= IOAPIC_RTE_REMOTE_IRR;
437	STAM_COUNTER_INC(&pThis->StatLevelIrqSent);
438	}
439	}
440	}
441
442
443	/**
444	* Gets the redirection table entry.
445	*
446	* @returns The redirection table entry.
447	* @param pThis Pointer to the IOAPIC instance.
448	* @param uIndex The index value.
449	*/
450	DECLINLINE(uint32_t) ioapicGetRedirTableEntry(PCIOAPIC pThis, uint32_t uIndex)
451	{
452	uint8_t const idxRte = (uIndex - IOAPIC_INDIRECT_INDEX_REDIR_TBL_START) >> 1;
453	uint32_t uValue;
454	if (!(uIndex & 1))
455	uValue = RT_LO_U32(pThis->au64RedirTable[idxRte]) & RT_LO_U32(pThis->u64RteReadMask);
456	else
457	uValue = RT_HI_U32(pThis->au64RedirTable[idxRte]) & RT_HI_U32(pThis->u64RteReadMask);
458
459	LogFlow(("IOAPIC: ioapicGetRedirTableEntry: uIndex=%#RX32 idxRte=%u returns %#RX32\n", uIndex, idxRte, uValue));
460	return uValue;
461	}
462
463
464	/**
465	* Sets the redirection table entry.
466	*
467	* @param pThis Pointer to the IOAPIC instance.
468	* @param uIndex The index value.
469	* @param uValue The value to set.
470	*/
471	static int ioapicSetRedirTableEntry(PIOAPIC pThis, uint32_t uIndex, uint32_t uValue)
472	{
473	uint8_t const idxRte = (uIndex - IOAPIC_INDIRECT_INDEX_REDIR_TBL_START) >> 1;
474	AssertMsg(idxRte < RT_ELEMENTS(pThis->au64RedirTable), ("Invalid index %u, expected <= %u\n", idxRte,
475	RT_ELEMENTS(pThis->au64RedirTable)));
476
477	int rc = IOAPIC_LOCK(pThis, VINF_IOM_R3_MMIO_WRITE);
478	if (rc == VINF_SUCCESS)
479	{
480	/*
481	* Write the low or high 32-bit value into the specified 64-bit RTE register,
482	* update only the valid, writable bits.
483	*
484	* We need to preserve the read-only bits as it can have dire consequences
485	* otherwise, see @bugref{8386#c24}.
486	*/
487	uint64_t const u64Rte = pThis->au64RedirTable[idxRte];
488	if (!(uIndex & 1))
489	{
490	uint32_t const u32RtePreserveLo = RT_LO_U32(u64Rte) & ~RT_LO_U32(pThis->u64RteWriteMask);
491	uint32_t const u32RteNewLo = (uValue & RT_LO_U32(pThis->u64RteWriteMask)) \| u32RtePreserveLo;
492	uint64_t const u64RteHi = u64Rte & UINT64_C(0xffffffff00000000);
493	pThis->au64RedirTable[idxRte] = u64RteHi \| u32RteNewLo;
494	}
495	else
496	{
497	uint32_t const u32RtePreserveHi = RT_HI_U32(u64Rte) & ~RT_HI_U32(pThis->u64RteWriteMask);
498	uint32_t const u32RteLo = RT_LO_U32(u64Rte);
499	uint64_t const u64RteNewHi = ((uint64_t)((uValue & RT_HI_U32(pThis->u64RteWriteMask)) \| u32RtePreserveHi) << 32);
500	pThis->au64RedirTable[idxRte] = u64RteNewHi \| u32RteLo;
501	}
502
503	/*
504	* Signal the next pending interrupt for this RTE.
505	*/
506	uint32_t const uPinMask = UINT32_C(1) << idxRte;
507	if (pThis->uIrr & uPinMask)
508	ioapicSignalIntrForRte(pThis, idxRte);
509
510	IOAPIC_UNLOCK(pThis);
511	LogFlow(("IOAPIC: ioapicSetRedirTableEntry: uIndex=%#RX32 idxRte=%u uValue=%#RX32\n", uIndex, idxRte, uValue));
512	}
513	else
514	STAM_COUNTER_INC(&pThis->StatSetRteContention);
515
516	return rc;
517	}
518
519
520	/**
521	* Gets the data register.
522	*
523	* @returns The data value.
524	* @param pThis Pointer to the IOAPIC instance.
525	*/
526	static uint32_t ioapicGetData(PCIOAPIC pThis)
527	{
528	uint8_t const uIndex = pThis->u8Index;
529	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
530	if ( uIndex >= IOAPIC_INDIRECT_INDEX_REDIR_TBL_START
531	&& uIndex <= pThis->u8LastRteRegIdx)
532	return ioapicGetRedirTableEntry(pThis, uIndex);
533
534	uint32_t uValue;
535	switch (uIndex)
536	{
537	case IOAPIC_INDIRECT_INDEX_ID:
538	uValue = ioapicGetId(pThis);
539	break;
540
541	case IOAPIC_INDIRECT_INDEX_VERSION:
542	uValue = ioapicGetVersion(pThis);
543	break;
544
545	case IOAPIC_INDIRECT_INDEX_ARB:
546	if (pThis->u8ApicVer == IOAPIC_VERSION_82093AA)
547	{
548	uValue = ioapicGetArb();
549	break;
550	}
551	RT_FALL_THRU();
552
553	default:
554	uValue = UINT32_C(0xffffffff);
555	Log2(("IOAPIC: Attempt to read register at invalid index %#x\n", uIndex));
556	break;
557	}
558	return uValue;
559	}
560
561
562	/**
563	* Sets the data register.
564	*
565	* @param pThis Pointer to the IOAPIC instance.
566	* @param uValue The value to set.
567	*/
568	static int ioapicSetData(PIOAPIC pThis, uint32_t uValue)
569	{
570	uint8_t const uIndex = pThis->u8Index;
571	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
572	LogFlow(("IOAPIC: ioapicSetData: uIndex=%#x uValue=%#RX32\n", uIndex, uValue));
573
574	if ( uIndex >= IOAPIC_INDIRECT_INDEX_REDIR_TBL_START
575	&& uIndex <= pThis->u8LastRteRegIdx)
576	return ioapicSetRedirTableEntry(pThis, uIndex, uValue);
577
578	if (uIndex == IOAPIC_INDIRECT_INDEX_ID)
579	ioapicSetId(pThis, uValue);
580	else
581	Log2(("IOAPIC: ioapicSetData: Invalid index %#RX32, ignoring write request with uValue=%#RX32\n", uIndex, uValue));
582
583	return VINF_SUCCESS;
584	}
585
586
587	/**
588	* @interface_method_impl{PDMIOAPICREG,pfnSetEoiR3}
589	*/
590	PDMBOTHCBDECL(int) ioapicSetEoi(PPDMDEVINS pDevIns, uint8_t u8Vector)
591	{
592	PIOAPIC pThis = PDMINS_2_DATA(pDevIns, PIOAPIC);
593	STAM_COUNTER_INC(&pThis->CTX_SUFF_Z(StatSetEoi));
594	LogFlow(("IOAPIC: ioapicSetEoi: u8Vector=%#x (%u)\n", u8Vector, u8Vector));
595
596	bool fRemoteIrrCleared = false;
597	int rc = IOAPIC_LOCK(pThis, VINF_IOM_R3_MMIO_WRITE);
598	if (rc == VINF_SUCCESS)
599	{
600	for (uint8_t idxRte = 0; idxRte < RT_ELEMENTS(pThis->au64RedirTable); idxRte++)
601	{
602	uint64_t const u64Rte = pThis->au64RedirTable[idxRte];
603	if (IOAPIC_RTE_GET_VECTOR(u64Rte) == u8Vector)
604	{
605	#ifdef DEBUG_ramshankar
606	/* This assertion may trigger when restoring saved-states created using the old, incorrect I/O APIC code. */
607	Assert(IOAPIC_RTE_GET_REMOTE_IRR(u64Rte));
608	#endif
609	pThis->au64RedirTable[idxRte] &= ~IOAPIC_RTE_REMOTE_IRR;
610	fRemoteIrrCleared = true;
611	STAM_COUNTER_INC(&pThis->StatEoiReceived);
612	Log2(("IOAPIC: ioapicSetEoi: Cleared remote IRR, idxRte=%u vector=%#x (%u)\n", idxRte, u8Vector, u8Vector));
613
614	/*
615	* Signal the next pending interrupt for this RTE.
616	*/
617	uint32_t const uPinMask = UINT32_C(1) << idxRte;
618	if (pThis->uIrr & uPinMask)
619	ioapicSignalIntrForRte(pThis, idxRte);
620	}
621	}
622
623	IOAPIC_UNLOCK(pThis);
624	AssertMsg(fRemoteIrrCleared, ("Failed to clear remote IRR for vector %#x (%u)\n", u8Vector, u8Vector));
625	}
626	else
627	STAM_COUNTER_INC(&pThis->StatEoiContention);
628
629	return rc;
630	}
631
632
633	/**
634	* @interface_method_impl{PDMIOAPICREG,pfnSetIrqR3}
635	*/
636	PDMBOTHCBDECL(void) ioapicSetIrq(PPDMDEVINS pDevIns, int iIrq, int iLevel, uint32_t uTagSrc)
637	{
638	#define IOAPIC_ASSERT_IRQ(a_idxRte, a_PinMask) do { \
639	pThis->au32TagSrc[(a_idxRte)] = !pThis->au32TagSrc[(a_idxRte)] ? uTagSrc : RT_BIT_32(31); \
640	pThis->uIrr \|= a_PinMask; \
641	ioapicSignalIntrForRte(pThis, (a_idxRte)); \
642	} while (0)
643
644	PIOAPIC pThis = PDMINS_2_DATA(pDevIns, PIOAPIC);
645	LogFlow(("IOAPIC: ioapicSetIrq: iIrq=%d iLevel=%d uTagSrc=%#x\n", iIrq, iLevel, uTagSrc));
646
647	STAM_COUNTER_INC(&pThis->CTX_SUFF_Z(StatSetIrq));
648
649	if (RT_LIKELY(iIrq >= 0 && iIrq < (int)RT_ELEMENTS(pThis->au64RedirTable)))
650	{
651	int rc = IOAPIC_LOCK(pThis, VINF_SUCCESS);
652	AssertRC(rc);
653
654	uint8_t const idxRte = iIrq;
655	uint32_t const uPinMask = UINT32_C(1) << idxRte;
656	uint32_t const u32RteLo = RT_LO_U32(pThis->au64RedirTable[idxRte]);
657	uint8_t const u8TriggerMode = IOAPIC_RTE_GET_TRIGGER_MODE(u32RteLo);
658
659	bool fActive = RT_BOOL(iLevel & 1);
660	/** @todo Polarity is busted elsewhere, we need to fix that
661	* first. See @bugref{8386#c7}. */
662	#if 0
663	uint8_t const u8Polarity = IOAPIC_RTE_GET_POLARITY(u32RteLo);
664	fActive ^= u8Polarity; */
665	#endif
666	if (!fActive)
667	{
668	pThis->uIrr &= ~uPinMask;
669	IOAPIC_UNLOCK(pThis);
670	return;
671	}
672
673	bool const fFlipFlop = ((iLevel & PDM_IRQ_LEVEL_FLIP_FLOP) == PDM_IRQ_LEVEL_FLIP_FLOP);
674	uint32_t const uPrevIrr = pThis->uIrr & uPinMask;
675	if (!fFlipFlop)
676	{
677	if (u8TriggerMode == IOAPIC_RTE_TRIGGER_MODE_EDGE)
678	{
679	/*
680	* For edge-triggered interrupts, we need to act only on a low to high edge transition.
681	* See ICH9 spec. 13.5.7 "REDIR_TBL: Redirection Table (LPC I/F-D31:F0)".
682	*/
683	if (!uPrevIrr)
684	IOAPIC_ASSERT_IRQ(idxRte, uPinMask);
685	else
686	{
687	STAM_COUNTER_INC(&pThis->StatRedundantEdgeIntr);
688	Log2(("IOAPIC: Redundant edge-triggered interrupt %#x (%u)\n", idxRte, idxRte));
689	}
690	}
691	else
692	{
693	Assert(u8TriggerMode == IOAPIC_RTE_TRIGGER_MODE_LEVEL);
694
695	/*
696	* For level-triggered interrupts, redundant interrupts are not a problem
697	* and will eventually be delivered anyway after an EOI, but our PDM devices
698	* should not typically call us with no change to the level.
699	*/
700	if (!uPrevIrr)
701	{ /* likely */ }
702	else
703	{
704	STAM_COUNTER_INC(&pThis->StatRedundantLevelIntr);
705	Log2(("IOAPIC: Redundant level-triggered interrupt %#x (%u)\n", idxRte, idxRte));
706	}
707
708	IOAPIC_ASSERT_IRQ(idxRte, uPinMask);
709	}
710	}
711	else
712	{
713	/*
714	* The device is flip-flopping the interrupt line, which implies we should de-assert
715	* and assert the interrupt line. The interrupt line is left in the asserted state
716	* after a flip-flop request. The de-assert is a NOP wrts to signaling an interrupt
717	* hence just the assert is done.
718	*/
719	IOAPIC_ASSERT_IRQ(idxRte, uPinMask);
720	}
721
722	IOAPIC_UNLOCK(pThis);
723	}
724	#undef IOAPIC_ASSERT_IRQ
725	}
726
727
728	/**
729	* @interface_method_impl{PDMIOAPICREG,pfnSendMsiR3}
730	*/
731	PDMBOTHCBDECL(void) ioapicSendMsi(PPDMDEVINS pDevIns, RTGCPHYS GCPhys, uint32_t uValue, uint32_t uTagSrc)
732	{
733	PCIOAPIC pThis = PDMINS_2_DATA(pDevIns, PCIOAPIC);
734	LogFlow(("IOAPIC: ioapicSendMsi: GCPhys=%#RGp uValue=%#RX32\n", GCPhys, uValue));
735
736	/*
737	* Parse the message from the physical address.
738	* See Intel spec. 10.11.1 "Message Address Register Format".
739	*/
740	uint8_t const u8DestAddr = (GCPhys & VBOX_MSI_ADDR_DEST_ID_MASK) >> VBOX_MSI_ADDR_DEST_ID_SHIFT;
741	uint8_t const u8DestMode = (GCPhys >> VBOX_MSI_ADDR_DEST_MODE_SHIFT) & 0x1;
742	/** @todo Check if we need to implement Redirection Hint Indicator. */
743	/* uint8_t const uRedirectHint = (GCPhys >> VBOX_MSI_ADDR_REDIRECTION_SHIFT) & 0x1; */
744
745	/*
746	* Parse the message data.
747	* See Intel spec. 10.11.2 "Message Data Register Format".
748	*/
749	uint8_t const u8Vector = (uValue & VBOX_MSI_DATA_VECTOR_MASK) >> VBOX_MSI_DATA_VECTOR_SHIFT;
750	uint8_t const u8TriggerMode = (uValue >> VBOX_MSI_DATA_TRIGGER_SHIFT) & 0x1;
751	uint8_t const u8DeliveryMode = (uValue >> VBOX_MSI_DATA_DELIVERY_MODE_SHIFT) & 0x7;
752
753	/*
754	* Deliver to the local APIC via the system/3-wire-APIC bus.
755	*/
756	int rc = pThis->CTX_SUFF(pIoApicHlp)->pfnApicBusDeliver(pDevIns,
757	u8DestAddr,
758	u8DestMode,
759	u8DeliveryMode,
760	u8Vector,
761	0 /* u8Polarity - N/A */,
762	u8TriggerMode,
763	uTagSrc);
764	/* Can't reschedule to R3. */
765	Assert(rc == VINF_SUCCESS \|\| rc == VERR_APIC_INTR_DISCARDED); NOREF(rc);
766	}
767
768
769	/**
770	* @callback_method_impl{FNIOMMMIOREAD}
771	*/
772	PDMBOTHCBDECL(int) ioapicMmioRead(PPDMDEVINS pDevIns, void pvUser, RTGCPHYS GCPhysAddr, void pv, unsigned cb)
773	{
774	PIOAPIC pThis = PDMINS_2_DATA(pDevIns, PIOAPIC);
775	STAM_COUNTER_INC(&pThis->CTX_SUFF_Z(StatMmioRead));
776	Assert(cb == 4); RT_NOREF_PV(cb); /* registered for dwords only */
777	RT_NOREF_PV(pvUser);
778
779	int rc = VINF_SUCCESS;
780	uint32_t puValue = (uint32_t )pv;
781	uint32_t offReg = GCPhysAddr & IOAPIC_MMIO_REG_MASK;
782	switch (offReg)
783	{
784	case IOAPIC_DIRECT_OFF_INDEX:
785	*puValue = ioapicGetIndex(pThis);
786	break;
787
788	case IOAPIC_DIRECT_OFF_DATA:
789	*puValue = ioapicGetData(pThis);
790	break;
791
792	default:
793	Log2(("IOAPIC: ioapicMmioRead: Invalid offset. GCPhysAddr=%#RGp offReg=%#x\n", GCPhysAddr, offReg));
794	rc = VINF_IOM_MMIO_UNUSED_FF;
795	break;
796	}
797
798	LogFlow(("IOAPIC: ioapicMmioRead: offReg=%#x, returns %#RX32\n", offReg, *puValue));
799	return rc;
800	}
801
802
803	/**
804	* @callback_method_impl{FNIOMMMIOWRITE}
805	*/
806	PDMBOTHCBDECL(int) ioapicMmioWrite(PPDMDEVINS pDevIns, void pvUser, RTGCPHYS GCPhysAddr, void const pv, unsigned cb)
807	{
808	PIOAPIC pThis = PDMINS_2_DATA(pDevIns, PIOAPIC);
809	RT_NOREF_PV(pvUser);
810
811	STAM_COUNTER_INC(&pThis->CTX_SUFF_Z(StatMmioWrite));
812
813	Assert(!(GCPhysAddr & 3));
814	Assert(cb == 4); RT_NOREF_PV(cb); /* registered for dwords only */
815
816	uint32_t const uValue = (uint32_t const )pv;
817	uint32_t const offReg = GCPhysAddr & IOAPIC_MMIO_REG_MASK;
818
819	LogFlow(("IOAPIC: ioapicMmioWrite: pThis=%p GCPhysAddr=%#RGp cb=%u uValue=%#RX32\n", pThis, GCPhysAddr, cb, uValue));
820	int rc = VINF_SUCCESS;
821	switch (offReg)
822	{
823	case IOAPIC_DIRECT_OFF_INDEX:
824	ioapicSetIndex(pThis, uValue);
825	break;
826
827	case IOAPIC_DIRECT_OFF_DATA:
828	rc = ioapicSetData(pThis, uValue);
829	break;
830
831	case IOAPIC_DIRECT_OFF_EOI:
832	if (pThis->u8ApicVer == IOAPIC_VERSION_ICH9)
833	rc = ioapicSetEoi(pDevIns, uValue);
834	else
835	Log(("IOAPIC: ioapicMmioWrite: Write to EOI register ignored!\n"));
836	break;
837
838	default:
839	Log2(("IOAPIC: ioapicMmioWrite: Invalid offset. GCPhysAddr=%#RGp offReg=%#x\n", GCPhysAddr, offReg));
840	break;
841	}
842
843	return rc;
844	}
845
846
847	#ifdef IN_RING3
848
849	/** @interface_method_impl{DBGFREGDESC,pfnGet} */
850	static DECLCALLBACK(int) ioapicDbgReg_GetIndex(void *pvUser, PCDBGFREGDESC pDesc, PDBGFREGVAL pValue)
851	{
852	RT_NOREF(pDesc);
853	pValue->u32 = ioapicGetIndex(PDMINS_2_DATA((PPDMDEVINS)pvUser, PCIOAPIC));
854	return VINF_SUCCESS;
855	}
856
857
858	/** @interface_method_impl{DBGFREGDESC,pfnSet} */
859	static DECLCALLBACK(int) ioapicDbgReg_SetIndex(void *pvUser, PCDBGFREGDESC pDesc, PCDBGFREGVAL pValue, PCDBGFREGVAL pfMask)
860	{
861	RT_NOREF(pDesc, pfMask);
862	ioapicSetIndex(PDMINS_2_DATA((PPDMDEVINS)pvUser, PIOAPIC), pValue->u8);
863	return VINF_SUCCESS;
864	}
865
866
867	/** @interface_method_impl{DBGFREGDESC,pfnGet} */
868	static DECLCALLBACK(int) ioapicDbgReg_GetData(void *pvUser, PCDBGFREGDESC pDesc, PDBGFREGVAL pValue)
869	{
870	RT_NOREF(pDesc);
871	pValue->u32 = ioapicGetData((PDMINS_2_DATA((PPDMDEVINS)pvUser, PCIOAPIC)));
872	return VINF_SUCCESS;
873	}
874
875
876	/** @interface_method_impl{DBGFREGDESC,pfnSet} */
877	static DECLCALLBACK(int) ioapicDbgReg_SetData(void *pvUser, PCDBGFREGDESC pDesc, PCDBGFREGVAL pValue, PCDBGFREGVAL pfMask)
878	{
879	RT_NOREF(pDesc, pfMask);
880	return ioapicSetData(PDMINS_2_DATA((PPDMDEVINS)pvUser, PIOAPIC), pValue->u32);
881	}
882
883
884	/** @interface_method_impl{DBGFREGDESC,pfnGet} */
885	static DECLCALLBACK(int) ioapicDbgReg_GetVersion(void *pvUser, PCDBGFREGDESC pDesc, PDBGFREGVAL pValue)
886	{
887	PCIOAPIC pThis = PDMINS_2_DATA((PPDMDEVINS)pvUser, PCIOAPIC);
888	RT_NOREF(pDesc);
889	pValue->u32 = ioapicGetVersion(pThis);
890	return VINF_SUCCESS;
891	}
892
893
894	/** @interface_method_impl{DBGFREGDESC,pfnGet} */
895	static DECLCALLBACK(int) ioapicDbgReg_GetArb(void *pvUser, PCDBGFREGDESC pDesc, PDBGFREGVAL pValue)
896	{
897	RT_NOREF(pvUser, pDesc);
898	pValue->u32 = ioapicGetArb();
899	return VINF_SUCCESS;
900	}
901
902
903	/** @interface_method_impl{DBGFREGDESC,pfnGet} */
904	static DECLCALLBACK(int) ioapicDbgReg_GetRte(void *pvUser, PCDBGFREGDESC pDesc, PDBGFREGVAL pValue)
905	{
906	PCIOAPIC pThis = PDMINS_2_DATA((PPDMDEVINS)pvUser, PCIOAPIC);
907	Assert(pDesc->offRegister < RT_ELEMENTS(pThis->au64RedirTable));
908	pValue->u64 = pThis->au64RedirTable[pDesc->offRegister];
909	return VINF_SUCCESS;
910	}
911
912
913	/** @interface_method_impl{DBGFREGDESC,pfnSet} */
914	static DECLCALLBACK(int) ioapicDbgReg_SetRte(void *pvUser, PCDBGFREGDESC pDesc, PCDBGFREGVAL pValue, PCDBGFREGVAL pfMask)
915	{
916	RT_NOREF(pfMask);
917	PIOAPIC pThis = PDMINS_2_DATA((PPDMDEVINS)pvUser, PIOAPIC);
918	/* No locks, no checks, just do it. */
919	Assert(pDesc->offRegister < RT_ELEMENTS(pThis->au64RedirTable));
920	pThis->au64RedirTable[pDesc->offRegister] = pValue->u64;
921	return VINF_SUCCESS;
922	}
923
924
925	/** IOREDTBLn sub fields. */
926	static DBGFREGSUBFIELD const g_aRteSubs[] =
927	{
928	{ "vector", 0, 8, 0, 0, NULL, NULL },
929	{ "dlvr_mode", 8, 3, 0, 0, NULL, NULL },
930	{ "dest_mode", 11, 1, 0, 0, NULL, NULL },
931	{ "dlvr_status", 12, 1, 0, DBGFREGSUBFIELD_FLAGS_READ_ONLY, NULL, NULL },
932	{ "polarity", 13, 1, 0, 0, NULL, NULL },
933	{ "remote_irr", 14, 1, 0, DBGFREGSUBFIELD_FLAGS_READ_ONLY, NULL, NULL },
934	{ "trigger_mode", 15, 1, 0, 0, NULL, NULL },
935	{ "mask", 16, 1, 0, 0, NULL, NULL },
936	{ "ext_dest_id", 48, 8, 0, DBGFREGSUBFIELD_FLAGS_READ_ONLY, NULL, NULL },
937	{ "dest", 56, 8, 0, 0, NULL, NULL },
938	DBGFREGSUBFIELD_TERMINATOR()
939	};
940
941
942	/** Register descriptors for DBGF. */
943	static DBGFREGDESC const g_aRegDesc[] =
944	{
945	{ "index", DBGFREG_END, DBGFREGVALTYPE_U8, 0, 0, ioapicDbgReg_GetIndex, ioapicDbgReg_SetIndex, NULL, NULL },
946	{ "data", DBGFREG_END, DBGFREGVALTYPE_U32, 0, 0, ioapicDbgReg_GetData, ioapicDbgReg_SetData, NULL, NULL },
947	{ "version", DBGFREG_END, DBGFREGVALTYPE_U32, DBGFREG_FLAGS_READ_ONLY, 0, ioapicDbgReg_GetVersion, NULL, NULL, NULL },
948	{ "arb", DBGFREG_END, DBGFREGVALTYPE_U32, DBGFREG_FLAGS_READ_ONLY, 0, ioapicDbgReg_GetArb, NULL, NULL, NULL },
949	{ "rte0", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 0, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
950	{ "rte1", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 1, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
951	{ "rte2", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 2, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
952	{ "rte3", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 3, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
953	{ "rte4", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 4, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
954	{ "rte5", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 5, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
955	{ "rte6", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 6, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
956	{ "rte7", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 7, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
957	{ "rte8", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 8, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
958	{ "rte9", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 9, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
959	{ "rte10", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 10, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
960	{ "rte11", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 11, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
961	{ "rte12", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 12, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
962	{ "rte13", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 13, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
963	{ "rte14", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 14, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
964	{ "rte15", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 15, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
965	{ "rte16", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 16, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
966	{ "rte17", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 17, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
967	{ "rte18", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 18, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
968	{ "rte19", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 19, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
969	{ "rte20", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 20, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
970	{ "rte21", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 21, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
971	{ "rte22", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 22, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
972	{ "rte23", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 23, ioapicDbgReg_GetRte, ioapicDbgReg_SetRte, NULL, &g_aRteSubs[0] },
973	DBGFREGDESC_TERMINATOR()
974	};
975
976
977	/**
978	* @callback_method_impl{FNDBGFHANDLERDEV}
979	*/
980	static DECLCALLBACK(void) ioapicR3DbgInfo(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs)
981	{
982	RT_NOREF(pszArgs);
983	PCIOAPIC pThis = PDMINS_2_DATA(pDevIns, PIOAPIC);
984	LogFlow(("IOAPIC: ioapicR3DbgInfo: pThis=%p pszArgs=%s\n", pThis, pszArgs));
985
986	pHlp->pfnPrintf(pHlp, "I/O APIC at %#010x:\n", IOAPIC_MMIO_BASE_PHYSADDR);
987
988	uint32_t const uId = ioapicGetId(pThis);
989	pHlp->pfnPrintf(pHlp, " ID = %#RX32\n", uId);
990	pHlp->pfnPrintf(pHlp, " ID = %#x\n", IOAPIC_ID_GET_ID(uId));
991
992	uint32_t const uVer = ioapicGetVersion(pThis);
993	pHlp->pfnPrintf(pHlp, " Version = %#RX32\n", uVer);
994	pHlp->pfnPrintf(pHlp, " Version = %#x\n", IOAPIC_VER_GET_VER(uVer));
995	pHlp->pfnPrintf(pHlp, " Pin Assert Reg. Support = %RTbool\n", IOAPIC_VER_HAS_PRQ(uVer));
996	pHlp->pfnPrintf(pHlp, " Max. Redirection Entry = %u\n", IOAPIC_VER_GET_MRE(uVer));
997
998	if (pThis->u8ApicVer == IOAPIC_VERSION_82093AA)
999	{
1000	uint32_t const uArb = ioapicGetArb();
1001	pHlp->pfnPrintf(pHlp, " Arbitration = %#RX32\n", uArb);
1002	pHlp->pfnPrintf(pHlp, " Arbitration ID = %#x\n", IOAPIC_ARB_GET_ID(uArb));
1003	}
1004
1005	pHlp->pfnPrintf(pHlp, " Current index = %#x\n", ioapicGetIndex(pThis));
1006
1007	pHlp->pfnPrintf(pHlp, " I/O Redirection Table and IRR:\n");
1008	pHlp->pfnPrintf(pHlp, " idx dst_mode dst_addr mask irr trigger rirr polar dlvr_st dlvr_mode vector\n");
1009
1010	for (uint8_t idxRte = 0; idxRte <= pThis->u8MaxRte; idxRte++)
1011	{
1012	static const char * const s_apszDeliveryModes[] =
1013	{
1014	"Fixed ",
1015	"LowPri",
1016	"SMI ",
1017	"Rsvd ",
1018	"NMI ",
1019	"INIT ",
1020	"Rsvd ",
1021	"ExtINT"
1022	};
1023
1024	const uint64_t u64Rte = pThis->au64RedirTable[idxRte];
1025	const char *pszDestMode = IOAPIC_RTE_GET_DEST_MODE(u64Rte) == 0 ? "phys" : "log ";
1026	const uint8_t uDest = IOAPIC_RTE_GET_DEST(u64Rte);
1027	const uint8_t uMask = IOAPIC_RTE_GET_MASK(u64Rte);
1028	const char *pszTriggerMode = IOAPIC_RTE_GET_TRIGGER_MODE(u64Rte) == 0 ? "edge " : "level";
1029	const uint8_t uRemoteIrr = IOAPIC_RTE_GET_REMOTE_IRR(u64Rte);
1030	const char *pszPolarity = IOAPIC_RTE_GET_POLARITY(u64Rte) == 0 ? "acthi" : "actlo";
1031	const char *pszDeliveryStatus = IOAPIC_RTE_GET_DELIVERY_STATUS(u64Rte) == 0 ? "idle" : "pend";
1032	const uint8_t uDeliveryMode = IOAPIC_RTE_GET_DELIVERY_MODE(u64Rte);
1033	Assert(uDeliveryMode < RT_ELEMENTS(s_apszDeliveryModes));
1034	const char *pszDeliveryMode = s_apszDeliveryModes[uDeliveryMode];
1035	const uint8_t uVector = IOAPIC_RTE_GET_VECTOR(u64Rte);
1036
1037	pHlp->pfnPrintf(pHlp, " %02d %s %02x %u %u %s %u %s %s %s %3u (%016llx)\n",
1038	idxRte,
1039	pszDestMode,
1040	uDest,
1041	uMask,
1042	(pThis->uIrr >> idxRte) & 1,
1043	pszTriggerMode,
1044	uRemoteIrr,
1045	pszPolarity,
1046	pszDeliveryStatus,
1047	pszDeliveryMode,
1048	uVector,
1049	u64Rte);
1050	}
1051	}
1052
1053
1054	/**
1055	* @copydoc FNSSMDEVSAVEEXEC
1056	*/
1057	static DECLCALLBACK(int) ioapicR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1058	{
1059	PCIOAPIC pThis = PDMINS_2_DATA(pDevIns, PCIOAPIC);
1060	LogFlow(("IOAPIC: ioapicR3SaveExec\n"));
1061
1062	SSMR3PutU32(pSSM, pThis->uIrr);
1063	SSMR3PutU8(pSSM, pThis->u8Id);
1064	SSMR3PutU8(pSSM, pThis->u8Index);
1065	for (uint8_t idxRte = 0; idxRte < RT_ELEMENTS(pThis->au64RedirTable); idxRte++)
1066	SSMR3PutU64(pSSM, pThis->au64RedirTable[idxRte]);
1067
1068	return VINF_SUCCESS;
1069	}
1070
1071
1072	/**
1073	* @copydoc FNSSMDEVLOADEXEC
1074	*/
1075	static DECLCALLBACK(int) ioapicR3LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
1076	{
1077	PIOAPIC pThis = PDMINS_2_DATA(pDevIns, PIOAPIC);
1078	LogFlow(("APIC: apicR3LoadExec: uVersion=%u uPass=%#x\n", uVersion, uPass));
1079
1080	Assert(uPass == SSM_PASS_FINAL);
1081	NOREF(uPass);
1082
1083	/* Weed out invalid versions. */
1084	if ( uVersion != IOAPIC_SAVED_STATE_VERSION
1085	&& uVersion != IOAPIC_SAVED_STATE_VERSION_VBOX_50)
1086	{
1087	LogRel(("IOAPIC: ioapicR3LoadExec: Invalid/unrecognized saved-state version %u (%#x)\n", uVersion, uVersion));
1088	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
1089	}
1090
1091	if (uVersion == IOAPIC_SAVED_STATE_VERSION)
1092	SSMR3GetU32(pSSM, (uint32_t *)&pThis->uIrr);
1093
1094	SSMR3GetU8(pSSM, (uint8_t *)&pThis->u8Id);
1095	SSMR3GetU8(pSSM, (uint8_t *)&pThis->u8Index);
1096	for (uint8_t idxRte = 0; idxRte < RT_ELEMENTS(pThis->au64RedirTable); idxRte++)
1097	SSMR3GetU64(pSSM, &pThis->au64RedirTable[idxRte]);
1098
1099	return VINF_SUCCESS;
1100	}
1101
1102
1103	/**
1104	* @interface_method_impl{PDMDEVREG,pfnReset}
1105	*/
1106	static DECLCALLBACK(void) ioapicR3Reset(PPDMDEVINS pDevIns)
1107	{
1108	PIOAPIC pThis = PDMINS_2_DATA(pDevIns, PIOAPIC);
1109	LogFlow(("IOAPIC: ioapicR3Reset: pThis=%p\n", pThis));
1110
1111	/* There might be devices threads calling ioapicSetIrq() in parallel, hence the lock. */
1112	IOAPIC_LOCK(pThis, VERR_IGNORED);
1113
1114	pThis->uIrr = 0;
1115	pThis->u8Index = 0;
1116	pThis->u8Id = 0;
1117
1118	for (uint8_t idxRte = 0; idxRte < RT_ELEMENTS(pThis->au64RedirTable); idxRte++)
1119	{
1120	pThis->au64RedirTable[idxRte] = IOAPIC_RTE_MASK;
1121	pThis->au32TagSrc[idxRte] = 0;
1122	}
1123
1124	IOAPIC_UNLOCK(pThis);
1125	}
1126
1127
1128	/**
1129	* @interface_method_impl{PDMDEVREG,pfnRelocate}
1130	*/
1131	static DECLCALLBACK(void) ioapicR3Relocate(PPDMDEVINS pDevIns, RTGCINTPTR offDelta)
1132	{
1133	RT_NOREF(offDelta);
1134	PIOAPIC pThis = PDMINS_2_DATA(pDevIns, PIOAPIC);
1135	LogFlow(("IOAPIC: ioapicR3Relocate: pThis=%p offDelta=%RGi\n", pThis, offDelta));
1136
1137	pThis->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
1138	pThis->pIoApicHlpRC = pThis->pIoApicHlpR3->pfnGetRCHelpers(pDevIns);
1139	}
1140
1141
1142	/**
1143	* @interface_method_impl{PDMDEVREG,pfnDestruct}
1144	*/
1145	static DECLCALLBACK(int) ioapicR3Destruct(PPDMDEVINS pDevIns)
1146	{
1147	PDMDEV_CHECK_VERSIONS_RETURN_QUIET(pDevIns);
1148	PIOAPIC pThis = PDMINS_2_DATA(pDevIns, PIOAPIC);
1149	LogFlow(("IOAPIC: ioapicR3Destruct: pThis=%p\n", pThis));
1150
1151	# ifndef IOAPIC_WITH_PDM_CRITSECT
1152	/*
1153	* Destroy the RTE critical section.
1154	*/
1155	if (PDMCritSectIsInitialized(&pThis->CritSect))
1156	PDMR3CritSectDelete(&pThis->CritSect);
1157	# else
1158	RT_NOREF_PV(pThis);
1159	# endif
1160
1161	return VINF_SUCCESS;
1162	}
1163
1164
1165	/**
1166	* @interface_method_impl{PDMDEVREG,pfnConstruct}
1167	*/
1168	static DECLCALLBACK(int) ioapicR3Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
1169	{
1170	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
1171	PIOAPIC pThis = PDMINS_2_DATA(pDevIns, PIOAPIC);
1172	LogFlow(("IOAPIC: ioapicR3Construct: pThis=%p iInstance=%d\n", pThis, iInstance));
1173	Assert(iInstance == 0); RT_NOREF(iInstance);
1174
1175	/*
1176	* Initialize the state data.
1177	*/
1178	pThis->pDevInsR3 = pDevIns;
1179	pThis->pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
1180	pThis->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
1181
1182	/*
1183	* Validate and read the configuration.
1184	*/
1185	PDMDEV_VALIDATE_CONFIG_RETURN(pDevIns, "NumCPUs\|RZEnabled\|ChipType", "");
1186
1187	/* The number of CPUs is currently unused, but left in CFGM and saved-state in case an ID of 0 is
1188	upsets some guest which we haven't yet tested. */
1189	uint32_t cCpus;
1190	int rc = CFGMR3QueryU32Def(pCfg, "NumCPUs", &cCpus, 1);
1191	if (RT_FAILURE(rc))
1192	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to query integer value \"NumCPUs\""));
1193	pThis->cCpus = (uint8_t)cCpus;
1194
1195	bool fRZEnabled;
1196	rc = CFGMR3QueryBoolDef(pCfg, "RZEnabled", &fRZEnabled, true);
1197	if (RT_FAILURE(rc))
1198	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to query boolean value \"RZEnabled\""));
1199
1200	char szChipType[16];
1201	rc = CFGMR3QueryStringDef(pCfg, "ChipType", &szChipType[0], sizeof(szChipType), "ICH9");
1202	if (RT_FAILURE(rc))
1203	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to query string value \"ChipType\""));
1204
1205	if (!strcmp(szChipType, "ICH9"))
1206	{
1207	/* Newer 2007-ish I/O APIC integrated into ICH southbridges. */
1208	pThis->u8ApicVer = IOAPIC_VERSION_ICH9;
1209	pThis->u8IdMask = 0xff;
1210	pThis->u8MaxRte = IOAPIC_MAX_RTE_INDEX;
1211	pThis->u8LastRteRegIdx = IOAPIC_INDIRECT_INDEX_RTE_END;
1212	pThis->u64RteWriteMask = IOAPIC_RTE_VALID_WRITE_MASK_ICH9;
1213	pThis->u64RteReadMask = IOAPIC_RTE_VALID_READ_MASK_ICH9;
1214	}
1215	else if (!strcmp(szChipType, "82093AA"))
1216	{
1217	/* Older 1995-ish discrete I/O APIC, used in P6 class systems. */
1218	pThis->u8ApicVer = IOAPIC_VERSION_82093AA;
1219	pThis->u8IdMask = 0x0f;
1220	pThis->u8MaxRte = IOAPIC_MAX_RTE_INDEX;
1221	pThis->u8LastRteRegIdx = IOAPIC_INDIRECT_INDEX_RTE_END;
1222	pThis->u64RteWriteMask = IOAPIC_RTE_VALID_WRITE_MASK_82093AA;
1223	pThis->u64RteReadMask = IOAPIC_RTE_VALID_READ_MASK_82093AA;
1224	}
1225	else if (!strcmp(szChipType, "82379AB"))
1226	{
1227	/* Even older 1993-ish I/O APIC built into SIO.A, used in EISA and early PCI systems. */
1228	/* Exact same version and behavior as 82093AA, only the number of RTEs is different. */
1229	pThis->u8ApicVer = IOAPIC_VERSION_82093AA;
1230	pThis->u8IdMask = 0x0f;
1231	pThis->u8MaxRte = IOAPIC_REDUCED_MAX_RTE_INDEX;
1232	pThis->u8LastRteRegIdx = IOAPIC_REDUCED_INDIRECT_INDEX_RTE_END;
1233	pThis->u64RteWriteMask = IOAPIC_RTE_VALID_WRITE_MASK_82093AA;
1234	pThis->u64RteReadMask = IOAPIC_RTE_VALID_READ_MASK_82093AA;
1235	}
1236	else
1237	{
1238	return PDMDevHlpVMSetError(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES, RT_SRC_POS,
1239	N_("I/O APIC configuration error: The \"ChipType\" value \"%s\" is unsupported"),
1240	szChipType);
1241	}
1242	Log2(("IOAPIC: cCpus=%u fRZEnabled=%RTbool szChipType=%s\n", cCpus, fRZEnabled, szChipType));
1243
1244	/*
1245	* We will use our own critical section for the IOAPIC device.
1246	*/
1247	rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns));
1248	AssertRCReturn(rc, rc);
1249
1250	# ifndef IOAPIC_WITH_PDM_CRITSECT
1251	/*
1252	* Setup the critical section to protect concurrent writes to the RTEs.
1253	*/
1254	rc = PDMDevHlpCritSectInit(pDevIns, &pThis->CritSect, RT_SRC_POS, "IOAPIC");
1255	if (RT_FAILURE(rc))
1256	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS, N_("IOAPIC: Failed to create critical section. rc=%Rrc"), rc);
1257	# endif
1258
1259	/*
1260	* Register the IOAPIC.
1261	*/
1262	PDMIOAPICREG IoApicReg;
1263	RT_ZERO(IoApicReg);
1264	IoApicReg.u32Version = PDM_IOAPICREG_VERSION;
1265	IoApicReg.pfnSetIrqR3 = ioapicSetIrq;
1266	IoApicReg.pfnSendMsiR3 = ioapicSendMsi;
1267	IoApicReg.pfnSetEoiR3 = ioapicSetEoi;
1268	if (fRZEnabled)
1269	{
1270	IoApicReg.pszSetIrqRC = "ioapicSetIrq";
1271	IoApicReg.pszSetIrqR0 = "ioapicSetIrq";
1272
1273	IoApicReg.pszSendMsiRC = "ioapicSendMsi";
1274	IoApicReg.pszSendMsiR0 = "ioapicSendMsi";
1275
1276	IoApicReg.pszSetEoiRC = "ioapicSetEoi";
1277	IoApicReg.pszSetEoiR0 = "ioapicSetEoi";
1278	}
1279	rc = PDMDevHlpIOAPICRegister(pDevIns, &IoApicReg, &pThis->pIoApicHlpR3);
1280	if (RT_FAILURE(rc))
1281	{
1282	AssertMsgFailed(("IOAPIC: PDMDevHlpIOAPICRegister failed! rc=%Rrc\n", rc));
1283	return rc;
1284	}
1285
1286	/*
1287	* Register MMIO callbacks.
1288	*/
1289	rc = PDMDevHlpMMIORegister(pDevIns, IOAPIC_MMIO_BASE_PHYSADDR, IOAPIC_MMIO_SIZE, pThis,
1290	IOMMMIO_FLAGS_READ_DWORD \| IOMMMIO_FLAGS_WRITE_DWORD_ZEROED, ioapicMmioWrite, ioapicMmioRead,
1291	"I/O APIC");
1292	if (RT_SUCCESS(rc))
1293	{
1294	if (fRZEnabled)
1295	{
1296	pThis->pIoApicHlpRC = pThis->pIoApicHlpR3->pfnGetRCHelpers(pDevIns);
1297	rc = PDMDevHlpMMIORegisterRC(pDevIns, IOAPIC_MMIO_BASE_PHYSADDR, IOAPIC_MMIO_SIZE, NIL_RTRCPTR /* pvUser */,
1298	"ioapicMmioWrite", "ioapicMmioRead");
1299	AssertRCReturn(rc, rc);
1300
1301	pThis->pIoApicHlpR0 = pThis->pIoApicHlpR3->pfnGetR0Helpers(pDevIns);
1302	rc = PDMDevHlpMMIORegisterR0(pDevIns, IOAPIC_MMIO_BASE_PHYSADDR, IOAPIC_MMIO_SIZE, NIL_RTR0PTR /* pvUser */,
1303	"ioapicMmioWrite", "ioapicMmioRead");
1304	AssertRCReturn(rc, rc);
1305	}
1306	}
1307	else
1308	{
1309	LogRel(("IOAPIC: PDMDevHlpMMIORegister failed! rc=%Rrc\n", rc));
1310	return rc;
1311	}
1312
1313	/*
1314	* Register saved-state callbacks.
1315	*/
1316	rc = PDMDevHlpSSMRegister(pDevIns, IOAPIC_SAVED_STATE_VERSION, sizeof(*pThis), ioapicR3SaveExec, ioapicR3LoadExec);
1317	if (RT_FAILURE(rc))
1318	{
1319	LogRel(("IOAPIC: PDMDevHlpSSMRegister failed! rc=%Rrc\n", rc));
1320	return rc;
1321	}
1322
1323	/*
1324	* Register debugger info callback.
1325	*/
1326	rc = PDMDevHlpDBGFInfoRegister(pDevIns, "ioapic", "Display IO APIC state.", ioapicR3DbgInfo);
1327	AssertRCReturn(rc, rc);
1328
1329	/*
1330	* Register debugger register access.
1331	*/
1332	rc = PDMDevHlpDBGFRegRegister(pDevIns, g_aRegDesc); AssertRC(rc);
1333	AssertRCReturn(rc, rc);
1334
1335	# ifdef VBOX_WITH_STATISTICS
1336	/*
1337	* Statistics.
1338	*/
1339	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatMmioReadRZ, STAMTYPE_COUNTER, "/Devices/IOAPIC/RZ/MmioReadRZ", STAMUNIT_OCCURENCES, "Number of IOAPIC MMIO reads in RZ.");
1340	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatMmioWriteRZ, STAMTYPE_COUNTER, "/Devices/IOAPIC/RZ/MmioWriteRZ", STAMUNIT_OCCURENCES, "Number of IOAPIC MMIO writes in RZ.");
1341	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatSetIrqRZ, STAMTYPE_COUNTER, "/Devices/IOAPIC/RZ/SetIrqRZ", STAMUNIT_OCCURENCES, "Number of IOAPIC SetIrq calls in RZ.");
1342	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatSetEoiRZ, STAMTYPE_COUNTER, "/Devices/IOAPIC/RZ/SetEoiRZ", STAMUNIT_OCCURENCES, "Number of IOAPIC SetEoi calls in RZ.");
1343
1344	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatMmioReadR3, STAMTYPE_COUNTER, "/Devices/IOAPIC/R3/MmioReadR3", STAMUNIT_OCCURENCES, "Number of IOAPIC MMIO reads in R3");
1345	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatMmioWriteR3, STAMTYPE_COUNTER, "/Devices/IOAPIC/R3/MmioWriteR3", STAMUNIT_OCCURENCES, "Number of IOAPIC MMIO writes in R3.");
1346	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatSetIrqR3, STAMTYPE_COUNTER, "/Devices/IOAPIC/R3/SetIrqR3", STAMUNIT_OCCURENCES, "Number of IOAPIC SetIrq calls in R3.");
1347	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatSetEoiR3, STAMTYPE_COUNTER, "/Devices/IOAPIC/R3/SetEoiR3", STAMUNIT_OCCURENCES, "Number of IOAPIC SetEoi calls in R3.");
1348
1349	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatRedundantEdgeIntr, STAMTYPE_COUNTER, "/Devices/IOAPIC/RedundantEdgeIntr", STAMUNIT_OCCURENCES, "Number of redundant edge-triggered interrupts (no IRR change).");
1350	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatRedundantLevelIntr, STAMTYPE_COUNTER, "/Devices/IOAPIC/RedundantLevelIntr", STAMUNIT_OCCURENCES, "Number of redundant level-triggered interrupts (no IRR change).");
1351	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatSuppressedLevelIntr, STAMTYPE_COUNTER, "/Devices/IOAPIC/SuppressedLevelIntr", STAMUNIT_OCCURENCES, "Number of suppressed level-triggered interrupts by remote IRR.");
1352
1353	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.");
1354	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.");
1355
1356	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatLevelIrqSent, STAMTYPE_COUNTER, "/Devices/IOAPIC/LevelIntr/Sent", STAMUNIT_OCCURENCES, "Number of level-triggered interrupts sent to the local APIC(s).");
1357	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).");
1358	# endif
1359
1360	/*
1361	* Init. the device state.
1362	*/
1363	LogRel(("IOAPIC: Using implementation 2.0! Chipset type %s\n", szChipType));
1364	ioapicR3Reset(pDevIns);
1365
1366	return VINF_SUCCESS;
1367	}
1368
1369
1370	/**
1371	* IO APIC device registration structure.
1372	*/
1373	const PDMDEVREG g_DeviceIOAPIC =
1374	{
1375	/* u32Version */
1376	PDM_DEVREG_VERSION,
1377	/* szName */
1378	"ioapic",
1379	/* szRCMod */
1380	"VBoxDDRC.rc",
1381	/* szR0Mod */
1382	"VBoxDDR0.r0",
1383	/* pszDescription */
1384	"I/O Advanced Programmable Interrupt Controller (IO-APIC) Device",
1385	/* fFlags */
1386	PDM_DEVREG_FLAGS_HOST_BITS_DEFAULT \| PDM_DEVREG_FLAGS_GUEST_BITS_32_64 \| PDM_DEVREG_FLAGS_PAE36
1387	\| PDM_DEVREG_FLAGS_RC \| PDM_DEVREG_FLAGS_R0,
1388	/* fClass */
1389	PDM_DEVREG_CLASS_PIC,
1390	/* cMaxInstances */
1391	1,
1392	/* cbInstance */
1393	sizeof(IOAPIC),
1394	/* pfnConstruct */
1395	ioapicR3Construct,
1396	/* pfnDestruct */
1397	ioapicR3Destruct,
1398	/* pfnRelocate */
1399	ioapicR3Relocate,
1400	/* pfnMemSetup */
1401	NULL,
1402	/* pfnPowerOn */
1403	NULL,
1404	/* pfnReset */
1405	ioapicR3Reset,
1406	/* pfnSuspend */
1407	NULL,
1408	/* pfnResume */
1409	NULL,
1410	/* pfnAttach */
1411	NULL,
1412	/* pfnDetach */
1413	NULL,
1414	/* pfnQueryInterface. */
1415	NULL,
1416	/* pfnInitComplete */
1417	NULL,
1418	/* pfnPowerOff */
1419	NULL,
1420	/* pfnSoftReset */
1421	NULL,
1422	/* u32VersionEnd */
1423	PDM_DEVREG_VERSION
1424	};
1425
1426	#endif /* IN_RING3 */
1427
1428	#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */
1429

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source: vbox/trunk/src/VBox/Devices/PC/DevIoApic.cpp@ 72063

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