DevIoApic.cpp@ 103416

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1	/* $Id: DevIoApic.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2	/** @file
3	* IO APIC - Input/Output Advanced Programmable Interrupt Controller.
4	*/
5
6	/*
7	* Copyright (C) 2016-2023 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_DEV_IOAPIC
33	#include <VBox/log.h>
34	#include <VBox/vmm/hm.h>
35	#include <VBox/msi.h>
36	#include <VBox/pci.h>
37	#include <VBox/vmm/pdmdev.h>
38
39	#include "VBoxDD.h"
40	#include <iprt/x86.h>
41	#include <iprt/string.h>
42
43
44	/*********************************************************************************************************************************
45	* Defined Constants And Macros *
46	*********************************************************************************************************************************/
47	/** The current IO APIC saved state version. */
48	#define IOAPIC_SAVED_STATE_VERSION 3
49	/** The current IO APIC saved state version. */
50	#define IOAPIC_SAVED_STATE_VERSION_NO_FLIPFLOP_MAP 2
51	/** The saved state version used by VirtualBox 5.0 and
52	* earlier. */
53	#define IOAPIC_SAVED_STATE_VERSION_VBOX_50 1
54
55	/** Implementation specified by the "Intel I/O Controller Hub 9
56	* (ICH9) Family" */
57	#define IOAPIC_VERSION_ICH9 0x20
58	/** Implementation specified by the "82093AA I/O Advanced Programmable Interrupt
59	Controller" */
60	#define IOAPIC_VERSION_82093AA 0x11
61
62	/** The default MMIO base physical address. */
63	#define IOAPIC_MMIO_BASE_PHYSADDR UINT64_C(0xfec00000)
64	/** The size of the MMIO range. */
65	#define IOAPIC_MMIO_SIZE X86_PAGE_4K_SIZE
66	/** The mask for getting direct registers from physical address. */
67	#define IOAPIC_MMIO_REG_MASK 0xff
68
69	/** The number of interrupt input pins. */
70	#define IOAPIC_NUM_INTR_PINS 24
71	/** Maximum redirection entires. */
72	#define IOAPIC_MAX_RTE_INDEX (IOAPIC_NUM_INTR_PINS - 1)
73	/** Reduced RTEs used by SIO.A (82379AB). */
74	#define IOAPIC_REDUCED_MAX_RTE_INDEX (16 - 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 & 0xff)
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 - Number of bits to shift to get the Mask. */
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	/** @name DMAR variant interpretation of RTE fields.
138	* @{ */
139	/** Redirection table entry - Number of bits to shift to get Interrupt
140	* Index[14:0]. */
141	#define IOAPIC_RTE_INTR_INDEX_LO_BIT 49
142	/** Redirection table entry - Interrupt Index[14:0]. */
143	#define IOAPIC_RTE_INTR_INDEX_LO UINT64_C(0xfffe000000000000)
144	/** Redirection table entry - Number of bits to shift to get interrupt format. */
145	#define IOAPIC_RTE_INTR_FORMAT_BIT 48
146	/** Redirection table entry - Interrupt format. */
147	#define IOAPIC_RTE_INTR_FORMAT RT_BIT_64(IOAPIC_RTE_INTR_FORMAT_BIT)
148	/** Redirection table entry - Number of bits to shift to get Interrupt Index[15]. */
149	#define IOAPIC_RTE_INTR_INDEX_HI_BIT 11
150	/** Redirection table entry - Interrupt Index[15]. */
151	#define IOAPIC_RTE_INTR_INDEX_HI RT_BIT_64(11)
152
153	/** Redirection table entry - Gets the Interrupt Index[14:0]. */
154	#define IOAPIC_RTE_GET_INTR_INDEX_LO(a_Reg) ((a_Reg) >> IOAPIC_RTE_INTR_INDEX_LO_BIT)
155	/** Redirection table entry - Gets the Interrupt format. */
156	#define IOAPIC_RTE_GET_INTR_FORMAT(a_Reg) (((a_Reg) >> IOAPIC_RTE_INTR_FORMAT_BIT) & 0x1)
157	/** Redirection table entry - Gets the Interrupt Index[15]. */
158	#define IOAPIC_RTE_GET_INTR_INDEX_HI(a_Reg) (((a_Reg) >> IOAPIC_RTE_INTR_INDEX_HI_BIT) & 0x1)
159	/** @} */
160
161	/** Redirection table entry - Valid write mask for 82093AA. */
162	#define IOAPIC_RTE_VALID_WRITE_MASK_82093AA ( IOAPIC_RTE_DEST \| IOAPIC_RTE_MASK \| IOAPIC_RTE_TRIGGER_MODE \
163	\| IOAPIC_RTE_POLARITY \| IOAPIC_RTE_DEST_MODE \| IOAPIC_RTE_DELIVERY_MODE \
164	\| IOAPIC_RTE_VECTOR)
165	/** Redirection table entry - Valid read mask for 82093AA. */
166	#define IOAPIC_RTE_VALID_READ_MASK_82093AA ( IOAPIC_RTE_DEST \| IOAPIC_RTE_MASK \| IOAPIC_RTE_TRIGGER_MODE \
167	\| IOAPIC_RTE_REMOTE_IRR \| IOAPIC_RTE_POLARITY \| IOAPIC_RTE_DELIVERY_STATUS \
168	\| IOAPIC_RTE_DEST_MODE \| IOAPIC_RTE_DELIVERY_MODE \| IOAPIC_RTE_VECTOR)
169
170	/** Redirection table entry - Valid write mask for ICH9. */
171	/** @note The remote IRR bit has been reverted to read-only as it turns out the
172	* ICH9 spec. is wrong, see @bugref{8386#c46}. */
173	#define IOAPIC_RTE_VALID_WRITE_MASK_ICH9 ( IOAPIC_RTE_DEST \| IOAPIC_RTE_MASK \| IOAPIC_RTE_TRIGGER_MODE \
174	/\| IOAPIC_RTE_REMOTE_IRR /\| IOAPIC_RTE_POLARITY \| IOAPIC_RTE_DEST_MODE \
175	\| IOAPIC_RTE_DELIVERY_MODE \| IOAPIC_RTE_VECTOR)
176	/** Redirection table entry - Valid read mask (incl. ExtDestID) for ICH9. */
177	#define IOAPIC_RTE_VALID_READ_MASK_ICH9 ( IOAPIC_RTE_DEST \| IOAPIC_RTE_EXT_DEST_ID \| IOAPIC_RTE_MASK \
178	\| IOAPIC_RTE_TRIGGER_MODE \| IOAPIC_RTE_REMOTE_IRR \| IOAPIC_RTE_POLARITY \
179	\| IOAPIC_RTE_DELIVERY_STATUS \| IOAPIC_RTE_DEST_MODE \| IOAPIC_RTE_DELIVERY_MODE \
180	\| IOAPIC_RTE_VECTOR)
181
182	/** Redirection table entry - Valid write mask for DMAR variant. */
183	#define IOAPIC_RTE_VALID_WRITE_MASK_DMAR ( IOAPIC_RTE_INTR_INDEX_LO \| IOAPIC_RTE_INTR_FORMAT \| IOAPIC_RTE_MASK \
184	\| IOAPIC_RTE_TRIGGER_MODE \| IOAPIC_RTE_POLARITY \| IOAPIC_RTE_INTR_INDEX_HI \
185	\| IOAPIC_RTE_DELIVERY_MODE \| IOAPIC_RTE_VECTOR)
186	/** Redirection table entry - Valid read mask for DMAR variant. */
187	#define IOAPIC_RTE_VALID_READ_MASK_DMAR ( IOAPIC_RTE_INTR_INDEX_LO \| IOAPIC_RTE_INTR_FORMAT \| IOAPIC_RTE_MASK \
188	\| IOAPIC_RTE_TRIGGER_MODE \| IOAPIC_RTE_REMOTE_IRR \| IOAPIC_RTE_POLARITY \
189	\| IOAPIC_RTE_DELIVERY_STATUS \| IOAPIC_RTE_INTR_INDEX_HI \| IOAPIC_RTE_DELIVERY_MODE \
190	\| IOAPIC_RTE_VECTOR)
191
192	/** Redirection table entry - Trigger mode edge. */
193	#define IOAPIC_RTE_TRIGGER_MODE_EDGE 0
194	/** Redirection table entry - Trigger mode level. */
195	#define IOAPIC_RTE_TRIGGER_MODE_LEVEL 1
196	/** Redirection table entry - Destination mode physical. */
197	#define IOAPIC_RTE_DEST_MODE_PHYSICAL 0
198	/** Redirection table entry - Destination mode logical. */
199	#define IOAPIC_RTE_DEST_MODE_LOGICAL 1
200
201
202	/** Index of indirect registers in the I/O APIC register table. */
203	#define IOAPIC_INDIRECT_INDEX_ID 0x0
204	#define IOAPIC_INDIRECT_INDEX_VERSION 0x1
205	#define IOAPIC_INDIRECT_INDEX_ARB 0x2 /* Older I/O APIC only. */
206	#define IOAPIC_INDIRECT_INDEX_REDIR_TBL_START 0x10 /* First valid RTE register index. */
207	#define IOAPIC_INDIRECT_INDEX_RTE_END 0x3F /* Last valid RTE register index (24 RTEs). */
208	#define IOAPIC_REDUCED_INDIRECT_INDEX_RTE_END 0x2F /* Last valid RTE register index (16 RTEs). */
209
210	/** Offset of direct registers in the I/O APIC MMIO space. */
211	#define IOAPIC_DIRECT_OFF_INDEX 0x00
212	#define IOAPIC_DIRECT_OFF_DATA 0x10
213	#define IOAPIC_DIRECT_OFF_EOI 0x40 /* Newer I/O APIC only. */
214
215	/* Use PDM critsect for now for I/O APIC locking, see @bugref{8245#c121}. */
216	#define IOAPIC_WITH_PDM_CRITSECT
217	#ifdef IOAPIC_WITH_PDM_CRITSECT
218	# define IOAPIC_LOCK(a_pDevIns, a_pThis, a_pThisCC, rcBusy) (a_pThisCC)->pIoApicHlp->pfnLock((a_pDevIns), (rcBusy))
219	# define IOAPIC_UNLOCK(a_pDevIns, a_pThis, a_pThisCC) (a_pThisCC)->pIoApicHlp->pfnUnlock((a_pDevIns))
220	# define IOAPIC_LOCK_IS_OWNER(a_pDevIns, a_pThis, a_pThisCC) (a_pThisCC)->pIoApicHlp->pfnLockIsOwner((a_pDevIns))
221	#else
222	# define IOAPIC_LOCK(a_pDevIns, a_pThis, a_pThisCC, rcBusy) PDMDevHlpCritSectEnter((a_pDevIns), &(a_pThis)->CritSect, (rcBusy))
223	# define IOAPIC_UNLOCK(a_pDevIns, a_pThis, a_pThisCC) PDMDevHlpCritSectLeave((a_pDevIns), &(a_pThis)->CritSect)
224	# define IOAPIC_LOCK_IS_OWNER(a_pDevIns, a_pThis, a_pThisCC) PDMDevHlpCritSectIsOwner((a_pDevIns), &(a_pThis)->CritSect)
225	#endif
226
227
228	/*********************************************************************************************************************************
229	* Structures and Typedefs *
230	*********************************************************************************************************************************/
231	/**
232	* I/O APIC chipset (and variants) we support.
233	*/
234	typedef enum IOAPICTYPE
235	{
236	IOAPICTYPE_ICH9 = 1,
237	IOAPICTYPE_DMAR,
238	IOAPICTYPE_82093AA,
239	IOAPICTYPE_82379AB,
240	IOAPICTYPE_32BIT_HACK = 0x7fffffff
241	} IOAPICTYPE;
242	AssertCompileSize(IOAPICTYPE, 4);
243
244	/**
245	* The shared I/O APIC device state.
246	*/
247	typedef struct IOAPIC
248	{
249	/** The ID register. */
250	uint8_t volatile u8Id;
251	/** The index register. */
252	uint8_t volatile u8Index;
253	/** Number of CPUs. */
254	uint8_t cCpus;
255	/** I/O APIC version. */
256	uint8_t u8ApicVer;
257	/** I/O APIC ID mask. */
258	uint8_t u8IdMask;
259	/** Maximum Redirection Table Entry (RTE) Entry. */
260	uint8_t u8MaxRte;
261	/** Last valid RTE indirect register index. */
262	uint8_t u8LastRteRegIdx;
263	/* Alignment padding. */
264	uint8_t u8Padding0[1];
265	/** Redirection table entry - Valid write mask. */
266	uint64_t u64RteWriteMask;
267	/** Redirection table entry - Valid read mask. */
268	uint64_t u64RteReadMask;
269
270	/** The redirection table registers. */
271	uint64_t au64RedirTable[IOAPIC_NUM_INTR_PINS];
272	/** The IRQ tags and source IDs for each pin (tracing purposes). */
273	uint32_t au32TagSrc[IOAPIC_NUM_INTR_PINS];
274	/** Bitmap keeping the flip-flop-ness of pending interrupts.
275	* The information held here is only relevan between SetIrq and the
276	* delivery, thus no real need to initialize or reset this. */
277	uint64_t bmFlipFlop[(IOAPIC_NUM_INTR_PINS + 63) / 64];
278
279	/** The internal IRR reflecting state of the interrupt lines. */
280	uint32_t uIrr;
281	/** The I/O APIC chipset type. */
282	IOAPICTYPE enmType;
283	/** The I/O APIC PCI address. */
284	PCIBDF uPciAddress;
285	/** Padding. */
286	uint32_t uPadding0;
287
288	#ifndef IOAPIC_WITH_PDM_CRITSECT
289	/** The critsect for updating to the RTEs. */
290	PDMCRITSECT CritSect;
291	#endif
292
293	/** The MMIO region. */
294	IOMMMIOHANDLE hMmio;
295
296	#ifdef VBOX_WITH_STATISTICS
297	/** Number of MMIO reads in RZ. */
298	STAMCOUNTER StatMmioReadRZ;
299	/** Number of MMIO reads in R3. */
300	STAMCOUNTER StatMmioReadR3;
301
302	/** Number of MMIO writes in RZ. */
303	STAMCOUNTER StatMmioWriteRZ;
304	/** Number of MMIO writes in R3. */
305	STAMCOUNTER StatMmioWriteR3;
306
307	/** Number of SetIrq calls in RZ. */
308	STAMCOUNTER StatSetIrqRZ;
309	/** Number of SetIrq calls in R3. */
310	STAMCOUNTER StatSetIrqR3;
311
312	/** Number of SetEoi calls in RZ. */
313	STAMCOUNTER StatSetEoiRZ;
314	/** Number of SetEoi calls in R3. */
315	STAMCOUNTER StatSetEoiR3;
316
317	/** Number of redundant edge-triggered interrupts. */
318	STAMCOUNTER StatRedundantEdgeIntr;
319	/** Number of redundant level-triggered interrupts. */
320	STAMCOUNTER StatRedundantLevelIntr;
321	/** Number of suppressed level-triggered interrupts (by remote IRR). */
322	STAMCOUNTER StatSuppressedLevelIntr;
323	/** Number of IOMMU remapped interrupts (signaled by RTE). */
324	STAMCOUNTER StatIommuRemappedIntr;
325	/** Number of IOMMU discarded interrupts (signaled by RTE). */
326	STAMCOUNTER StatIommuDiscardedIntr;
327	/** Number of IOMMU remapped MSIs. */
328	STAMCOUNTER StatIommuRemappedMsi;
329	/** Number of IOMMU denied or failed MSIs. */
330	STAMCOUNTER StatIommuDiscardedMsi;
331	/** Number of returns to ring-3 due to Set RTE lock contention. */
332	STAMCOUNTER StatSetRteContention;
333	/** Number of level-triggered interrupts dispatched to the local APIC(s). */
334	STAMCOUNTER StatLevelIrqSent;
335	/** Number of EOIs received for level-triggered interrupts from the local
336	* APIC(s). */
337	STAMCOUNTER StatEoiReceived;
338	/** The time an interrupt level spent in the pending state. */
339	STAMPROFILEADV aStatLevelAct[IOAPIC_NUM_INTR_PINS];
340	#endif
341	/** Per-vector stats. */
342	STAMCOUNTER aStatVectors[256];
343	} IOAPIC;
344	AssertCompileMemberAlignment(IOAPIC, au64RedirTable, 8);
345	/** Pointer to shared IOAPIC data. */
346	typedef IOAPIC *PIOAPIC;
347	/** Pointer to const shared IOAPIC data. */
348	typedef IOAPIC const *PCIOAPIC;
349
350
351	/**
352	* The I/O APIC device state for ring-3.
353	*/
354	typedef struct IOAPICR3
355	{
356	/** The IOAPIC helpers. */
357	R3PTRTYPE(PCPDMIOAPICHLP) pIoApicHlp;
358	} IOAPICR3;
359	/** Pointer to the I/O APIC device state for ring-3. */
360	typedef IOAPICR3 *PIOAPICR3;
361
362
363	/**
364	* The I/O APIC device state for ring-0.
365	*/
366	typedef struct IOAPICR0
367	{
368	/** The IOAPIC helpers. */
369	R0PTRTYPE(PCPDMIOAPICHLP) pIoApicHlp;
370	} IOAPICR0;
371	/** Pointer to the I/O APIC device state for ring-0. */
372	typedef IOAPICR0 *PIOAPICR0;
373
374
375	/**
376	* The I/O APIC device state for raw-mode.
377	*/
378	typedef struct IOAPICRC
379	{
380	/** The IOAPIC helpers. */
381	RCPTRTYPE(PCPDMIOAPICHLP) pIoApicHlp;
382	} IOAPICRC;
383	/** Pointer to the I/O APIC device state for raw-mode. */
384	typedef IOAPICRC *PIOAPICRC;
385
386
387	/** The I/O APIC device state for the current context. */
388	typedef CTX_SUFF(IOAPIC) IOAPICCC;
389	/** Pointer to the I/O APIC device state for the current context. */
390	typedef CTX_SUFF(PIOAPIC) PIOAPICCC;
391
392
393	/**
394	* xAPIC interrupt.
395	*/
396	typedef struct XAPICINTR
397	{
398	/** The interrupt vector. */
399	uint8_t u8Vector;
400	/** The destination (mask or ID). */
401	uint8_t u8Dest;
402	/** The destination mode. */
403	uint8_t u8DestMode;
404	/** Delivery mode. */
405	uint8_t u8DeliveryMode;
406	/** Trigger mode. */
407	uint8_t u8TriggerMode;
408	/** Redirection hint. */
409	uint8_t u8RedirHint;
410	/** Polarity. */
411	uint8_t u8Polarity;
412	/** Padding. */
413	uint8_t abPadding0;
414	} XAPICINTR;
415	/** Pointer to an I/O xAPIC interrupt struct. */
416	typedef XAPICINTR *PXAPICINTR;
417	/** Pointer to a const xAPIC interrupt struct. */
418	typedef XAPICINTR const *PCXAPICINTR;
419
420
421	#ifndef VBOX_DEVICE_STRUCT_TESTCASE
422
423	/**
424	* Gets the arbitration register.
425	*
426	* @returns The arbitration.
427	*/
428	DECLINLINE(uint32_t) ioapicGetArb(void)
429	{
430	Log2(("IOAPIC: ioapicGetArb: returns 0\n"));
431	return 0;
432	}
433
434
435	/**
436	* Gets the version register.
437	*
438	* @returns The version.
439	*/
440	DECLINLINE(uint32_t) ioapicGetVersion(PCIOAPIC pThis)
441	{
442	uint32_t uValue = RT_MAKE_U32(pThis->u8ApicVer, pThis->u8MaxRte);
443	Log2(("IOAPIC: ioapicGetVersion: returns %#RX32\n", uValue));
444	return uValue;
445	}
446
447
448	/**
449	* Sets the ID register.
450	*
451	* @param pThis The shared I/O APIC device state.
452	* @param uValue The value to set.
453	*/
454	DECLINLINE(void) ioapicSetId(PIOAPIC pThis, uint32_t uValue)
455	{
456	Log2(("IOAPIC: ioapicSetId: uValue=%#RX32\n", uValue));
457	ASMAtomicWriteU8(&pThis->u8Id, (uValue >> 24) & pThis->u8IdMask);
458	}
459
460
461	/**
462	* Gets the ID register.
463	*
464	* @returns The ID.
465	* @param pThis The shared I/O APIC device state.
466	*/
467	DECLINLINE(uint32_t) ioapicGetId(PCIOAPIC pThis)
468	{
469	uint32_t uValue = (uint32_t)pThis->u8Id << 24;
470	Log2(("IOAPIC: ioapicGetId: returns %#RX32\n", uValue));
471	return uValue;
472	}
473
474
475	/**
476	* Sets the index register.
477	*
478	* @param pThis The shared I/O APIC device state.
479	* @param uValue The value to set.
480	*/
481	DECLINLINE(void) ioapicSetIndex(PIOAPIC pThis, uint32_t uValue)
482	{
483	LogFlow(("IOAPIC: ioapicSetIndex: uValue=%#RX32\n", uValue));
484	ASMAtomicWriteU8(&pThis->u8Index, uValue & IOAPIC_INDEX_VALID_WRITE_MASK);
485	}
486
487
488	/**
489	* Gets the index register.
490	*
491	* @returns The index value.
492	*/
493	DECLINLINE(uint32_t) ioapicGetIndex(PCIOAPIC pThis)
494	{
495	uint32_t const uValue = pThis->u8Index;
496	LogFlow(("IOAPIC: ioapicGetIndex: returns %#x\n", uValue));
497	return uValue;
498	}
499
500
501	/**
502	* Converts an MSI message to an APIC interrupt.
503	*
504	* @param pMsi The MSI message to convert.
505	* @param pIntr Where to store the APIC interrupt.
506	*/
507	DECLINLINE(void) ioapicGetApicIntrFromMsi(PCMSIMSG pMsi, PXAPICINTR pIntr)
508	{
509	/*
510	* Parse the message from the physical address and data.
511	* Do -not- zero out other fields in the APIC interrupt.
512	*
513	* See Intel spec. 10.11.1 "Message Address Register Format".
514	* See Intel spec. 10.11.2 "Message Data Register Format".
515	*/
516	pIntr->u8Dest = pMsi->Addr.n.u8DestId;
517	pIntr->u8DestMode = pMsi->Addr.n.u1DestMode;
518	pIntr->u8RedirHint = pMsi->Addr.n.u1RedirHint;
519
520	pIntr->u8Vector = pMsi->Data.n.u8Vector;
521	pIntr->u8TriggerMode = pMsi->Data.n.u1TriggerMode;
522	pIntr->u8DeliveryMode = pMsi->Data.n.u3DeliveryMode;
523	}
524
525
526	#if defined(VBOX_WITH_IOMMU_AMD) \|\| defined(VBOX_WITH_IOMMU_INTEL)
527	/**
528	* Convert an RTE into an MSI message.
529	*
530	* @param u64Rte The RTE to convert.
531	* @param enmType The I/O APIC chipset type.
532	* @param pMsi Where to store the MSI message.
533	*/
534	DECLINLINE(void) ioapicGetMsiFromRte(uint64_t u64Rte, IOAPICTYPE enmType, PMSIMSG pMsi)
535	{
536	bool const fRemappable = IOAPIC_RTE_GET_INTR_FORMAT(u64Rte);
537	if (!fRemappable)
538	{
539	pMsi->Addr.n.u12Addr = VBOX_MSI_ADDR_BASE >> VBOX_MSI_ADDR_SHIFT;
540	pMsi->Addr.n.u8DestId = IOAPIC_RTE_GET_DEST(u64Rte);
541	pMsi->Addr.n.u1RedirHint = 0;
542	pMsi->Addr.n.u1DestMode = IOAPIC_RTE_GET_DEST_MODE(u64Rte);
543
544	pMsi->Data.n.u8Vector = IOAPIC_RTE_GET_VECTOR(u64Rte);
545	pMsi->Data.n.u3DeliveryMode = IOAPIC_RTE_GET_DELIVERY_MODE(u64Rte);
546	pMsi->Data.n.u1TriggerMode = IOAPIC_RTE_GET_TRIGGER_MODE(u64Rte);
547	/* pMsi->Data.n.u1Level = ??? */
548	/** @todo r=ramshankar: Level triggered MSIs don't make much sense though
549	* possible in theory? Maybe document this more explicitly... */
550	}
551	else
552	{
553	Assert(enmType == IOAPICTYPE_DMAR);
554	NOREF(enmType);
555
556	/*
557	* The spec. mentions that SHV will be 0 when delivery mode is 0 (fixed), but
558	* not what SHV will be if delivery mode is not 0. I ASSUME copying delivery
559	* mode into SHV here is what hardware actually does.
560	*
561	* See Intel VT-d spec. 5.1.5.1 "I/OxAPIC Programming".
562	*/
563	pMsi->Addr.dmar_remap.u12Addr = VBOX_MSI_ADDR_BASE >> VBOX_MSI_ADDR_SHIFT;
564	pMsi->Addr.dmar_remap.u14IntrIndexLo = IOAPIC_RTE_GET_INTR_INDEX_LO(u64Rte);
565	pMsi->Addr.dmar_remap.fIntrFormat = 1;
566	pMsi->Addr.dmar_remap.fShv = IOAPIC_RTE_GET_DELIVERY_MODE(u64Rte);
567	pMsi->Addr.dmar_remap.u1IntrIndexHi = IOAPIC_RTE_GET_INTR_INDEX_HI(u64Rte);
568
569	pMsi->Data.dmar_remap.u16SubHandle = 0;
570	}
571	}
572	#endif
573
574
575	/**
576	* Signals the next pending interrupt for the specified Redirection Table Entry
577	* (RTE).
578	*
579	* @param pDevIns The device instance.
580	* @param pThis The shared I/O APIC device state.
581	* @param pThisCC The I/O APIC device state for the current context.
582	* @param idxRte The index of the RTE (validated).
583	*
584	* @remarks It is the responsibility of the caller to verify that an interrupt is
585	* pending for the pin corresponding to the RTE before calling this
586	* function.
587	*/
588	static void ioapicSignalIntrForRte(PPDMDEVINS pDevIns, PIOAPIC pThis, PIOAPICCC pThisCC, uint8_t idxRte)
589	{
590	Assert(IOAPIC_LOCK_IS_OWNER(pDevIns, pThis, pThisCC));
591
592	/*
593	* Ensure the interrupt isn't masked.
594	*/
595	uint64_t const u64Rte = pThis->au64RedirTable[idxRte];
596	if (!IOAPIC_RTE_IS_MASKED(u64Rte))
597	{ /* likely */ }
598	else
599	return;
600
601	/* We cannot accept another level-triggered interrupt until remote IRR has been cleared. */
602	uint8_t const u8TriggerMode = IOAPIC_RTE_GET_TRIGGER_MODE(u64Rte);
603	if (u8TriggerMode == IOAPIC_RTE_TRIGGER_MODE_LEVEL)
604	{
605	uint8_t const u8RemoteIrr = IOAPIC_RTE_GET_REMOTE_IRR(u64Rte);
606	if (u8RemoteIrr)
607	{
608	STAM_COUNTER_INC(&pThis->StatSuppressedLevelIntr);
609	return;
610	}
611	}
612
613	XAPICINTR ApicIntr;
614	RT_ZERO(ApicIntr);
615	ApicIntr.u8Vector = IOAPIC_RTE_GET_VECTOR(u64Rte);
616	ApicIntr.u8Dest = IOAPIC_RTE_GET_DEST(u64Rte);
617	ApicIntr.u8DestMode = IOAPIC_RTE_GET_DEST_MODE(u64Rte);
618	ApicIntr.u8DeliveryMode = IOAPIC_RTE_GET_DELIVERY_MODE(u64Rte);
619	ApicIntr.u8Polarity = IOAPIC_RTE_GET_POLARITY(u64Rte);
620	ApicIntr.u8TriggerMode = u8TriggerMode;
621	//ApicIntr.u8RedirHint = 0;
622
623	/** @todo We might be able to release the IOAPIC(PDM) lock here and re-acquire it
624	* before setting the remote IRR bit below. The APIC and IOMMU should not
625	* require the caller to hold the PDM lock. */
626
627	#if defined(VBOX_WITH_IOMMU_AMD) \|\| defined(VBOX_WITH_IOMMU_INTEL)
628	/*
629	* The interrupt may need to be remapped (or discarded) if an IOMMU is present.
630	* For line-based interrupts we must use the southbridge I/O APIC's BDF as
631	* the origin of the interrupt, see @bugref{9654#c74}.
632	*/
633	MSIMSG MsiIn;
634	RT_ZERO(MsiIn);
635	ioapicGetMsiFromRte(u64Rte, pThis->enmType, &MsiIn);
636
637	MSIMSG MsiOut;
638	int const rcRemap = pThisCC->pIoApicHlp->pfnIommuMsiRemap(pDevIns, pThis->uPciAddress, &MsiIn, &MsiOut);
639	if ( rcRemap == VERR_IOMMU_NOT_PRESENT
640	\|\| rcRemap == VERR_IOMMU_CANNOT_CALL_SELF)
641	{ /* likely - assuming majority of VMs don't have IOMMU configured. */ }
642	else if (RT_SUCCESS(rcRemap))
643	{
644	/* Update the APIC interrupt with the remapped data. */
645	ioapicGetApicIntrFromMsi(&MsiOut, &ApicIntr);
646
647	/* Ensure polarity hasn't changed (trigger mode might change with Intel IOMMUs). */
648	Assert(ApicIntr.u8Polarity == IOAPIC_RTE_GET_POLARITY(u64Rte));
649	STAM_COUNTER_INC(&pThis->StatIommuRemappedIntr);
650	}
651	else
652	{
653	STAM_COUNTER_INC(&pThis->StatIommuDiscardedIntr);
654	return;
655	}
656	#endif
657
658	uint32_t const u32TagSrc = pThis->au32TagSrc[idxRte];
659	Log2(("IOAPIC: Signaling %s-triggered interrupt. Dest=%#x DestMode=%s Vector=%#x (%u)\n",
660	ApicIntr.u8TriggerMode == IOAPIC_RTE_TRIGGER_MODE_EDGE ? "edge" : "level", ApicIntr.u8Dest,
661	ApicIntr.u8DestMode == IOAPIC_RTE_DEST_MODE_PHYSICAL ? "physical" : "logical",
662	ApicIntr.u8Vector, ApicIntr.u8Vector));
663
664	/*
665	* Deliver to the local APIC via the system/3-wire-APIC bus.
666	*/
667	int rc = pThisCC->pIoApicHlp->pfnApicBusDeliver(pDevIns,
668	ApicIntr.u8Dest,
669	ApicIntr.u8DestMode,
670	ApicIntr.u8DeliveryMode,
671	ApicIntr.u8Vector,
672	ApicIntr.u8Polarity,
673	ApicIntr.u8TriggerMode,
674	u32TagSrc);
675	/* Can't reschedule to R3. */
676	Assert(rc == VINF_SUCCESS \|\| rc == VERR_APIC_INTR_DISCARDED);
677	#ifdef DEBUG_ramshankar
678	if (rc == VERR_APIC_INTR_DISCARDED)
679	AssertMsgFailed(("APIC: Interrupt discarded u8Vector=%#x (%u) u64Rte=%#RX64\n", u8Vector, u8Vector, u64Rte));
680	#endif
681
682	if (rc == VINF_SUCCESS)
683	{
684	/*
685	* For level-triggered interrupts, we set the remote IRR bit to indicate
686	* the local APIC has accepted the interrupt.
687	*
688	* For edge-triggered interrupts, we should not clear the IRR bit as it
689	* should remain intact to reflect the state of the interrupt line.
690	* The device will explicitly transition to inactive state via the
691	* ioapicSetIrq() callback.
692	*/
693	if (u8TriggerMode == IOAPIC_RTE_TRIGGER_MODE_LEVEL)
694	{
695	Assert(u8TriggerMode == IOAPIC_RTE_TRIGGER_MODE_LEVEL);
696	pThis->au64RedirTable[idxRte] \|= IOAPIC_RTE_REMOTE_IRR;
697	STAM_COUNTER_INC(&pThis->StatLevelIrqSent);
698	STAM_PROFILE_ADV_START(&pThis->aStatLevelAct[idxRte], a);
699	}
700	/*
701	* Edge-triggered flip-flops gets cleaned up here as the device code will
702	* not do any explicit ioapicSetIrq and we won't receive any EOI either.
703	*/
704	else if (ASMBitTest(pThis->bmFlipFlop, idxRte))
705	{
706	Log2(("IOAPIC: Clearing IRR for edge flip-flop %#x uTagSrc=%#x\n", idxRte, pThis->au32TagSrc[idxRte]));
707	pThis->au32TagSrc[idxRte] = 0;
708	pThis->uIrr &= ~RT_BIT_32(idxRte);
709	}
710	}
711	}
712
713
714	/**
715	* Gets the redirection table entry.
716	*
717	* @returns The redirection table entry.
718	* @param pThis The shared I/O APIC device state.
719	* @param uIndex The index value.
720	*/
721	DECLINLINE(uint32_t) ioapicGetRedirTableEntry(PCIOAPIC pThis, uint32_t uIndex)
722	{
723	uint8_t const idxRte = (uIndex - IOAPIC_INDIRECT_INDEX_REDIR_TBL_START) >> 1;
724	AssertMsgReturn(idxRte < RT_ELEMENTS(pThis->au64RedirTable),
725	("Invalid index %u, expected < %u\n", idxRte, RT_ELEMENTS(pThis->au64RedirTable)),
726	UINT32_MAX);
727	uint32_t uValue;
728	if (!(uIndex & 1))
729	uValue = RT_LO_U32(pThis->au64RedirTable[idxRte]) & RT_LO_U32(pThis->u64RteReadMask);
730	else
731	uValue = RT_HI_U32(pThis->au64RedirTable[idxRte]) & RT_HI_U32(pThis->u64RteReadMask);
732
733	LogFlow(("IOAPIC: ioapicGetRedirTableEntry: uIndex=%#RX32 idxRte=%u returns %#RX32\n", uIndex, idxRte, uValue));
734	return uValue;
735	}
736
737
738	/**
739	* Sets the redirection table entry.
740	*
741	* @returns Strict VBox status code (VINF_IOM_R3_MMIO_WRITE / VINF_SUCCESS).
742	* @param pDevIns The device instance.
743	* @param pThis The shared I/O APIC device state.
744	* @param pThisCC The I/O APIC device state for the current context.
745	* @param uIndex The index value.
746	* @param uValue The value to set.
747	*/
748	static VBOXSTRICTRC ioapicSetRedirTableEntry(PPDMDEVINS pDevIns, PIOAPIC pThis, PIOAPICCC pThisCC,
749	uint32_t uIndex, uint32_t uValue)
750	{
751	uint8_t const idxRte = (uIndex - IOAPIC_INDIRECT_INDEX_REDIR_TBL_START) >> 1;
752	AssertMsgReturn(idxRte < RT_ELEMENTS(pThis->au64RedirTable),
753	("Invalid index %u, expected < %u\n", idxRte, RT_ELEMENTS(pThis->au64RedirTable)),
754	VINF_SUCCESS);
755
756	VBOXSTRICTRC rc = IOAPIC_LOCK(pDevIns, pThis, pThisCC, VINF_IOM_R3_MMIO_WRITE);
757	if (rc == VINF_SUCCESS)
758	{
759	/*
760	* Write the low or high 32-bit value into the specified 64-bit RTE register,
761	* update only the valid, writable bits.
762	*
763	* We need to preserve the read-only bits as it can have dire consequences
764	* otherwise, see @bugref{8386#c24}.
765	*/
766	uint64_t const u64Rte = pThis->au64RedirTable[idxRte];
767	if (!(uIndex & 1))
768	{
769	uint32_t const u32RtePreserveLo = RT_LO_U32(u64Rte) & ~RT_LO_U32(pThis->u64RteWriteMask);
770	uint32_t const u32RteNewLo = (uValue & RT_LO_U32(pThis->u64RteWriteMask)) \| u32RtePreserveLo;
771	uint64_t const u64RteHi = u64Rte & UINT64_C(0xffffffff00000000);
772	pThis->au64RedirTable[idxRte] = u64RteHi \| u32RteNewLo;
773	}
774	else
775	{
776	uint32_t const u32RtePreserveHi = RT_HI_U32(u64Rte) & ~RT_HI_U32(pThis->u64RteWriteMask);
777	uint32_t const u32RteLo = RT_LO_U32(u64Rte);
778	uint64_t const u64RteNewHi = ((uint64_t)((uValue & RT_HI_U32(pThis->u64RteWriteMask)) \| u32RtePreserveHi) << 32);
779	pThis->au64RedirTable[idxRte] = u64RteNewHi \| u32RteLo;
780	}
781
782	LogFlow(("IOAPIC: ioapicSetRedirTableEntry: uIndex=%#RX32 idxRte=%u uValue=%#RX32\n", uIndex, idxRte, uValue));
783
784	/*
785	* Signal the next pending interrupt for this RTE.
786	*/
787	uint32_t const uPinMask = UINT32_C(1) << idxRte;
788	if (pThis->uIrr & uPinMask)
789	{
790	LogFlow(("IOAPIC: ioapicSetRedirTableEntry: Signalling pending interrupt. idxRte=%u\n", idxRte));
791	ioapicSignalIntrForRte(pDevIns, pThis, pThisCC, idxRte);
792	}
793
794	IOAPIC_UNLOCK(pDevIns, pThis, pThisCC);
795	}
796	else
797	STAM_COUNTER_INC(&pThis->StatSetRteContention);
798
799	return rc;
800	}
801
802
803	/**
804	* Gets the data register.
805	*
806	* @returns The data value.
807	* @param pThis The shared I/O APIC device state.
808	*/
809	static uint32_t ioapicGetData(PCIOAPIC pThis)
810	{
811	uint8_t const uIndex = pThis->u8Index;
812	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
813	if ( uIndex >= IOAPIC_INDIRECT_INDEX_REDIR_TBL_START
814	&& uIndex <= pThis->u8LastRteRegIdx)
815	return ioapicGetRedirTableEntry(pThis, uIndex);
816
817	uint32_t uValue;
818	switch (uIndex)
819	{
820	case IOAPIC_INDIRECT_INDEX_ID:
821	uValue = ioapicGetId(pThis);
822	break;
823
824	case IOAPIC_INDIRECT_INDEX_VERSION:
825	uValue = ioapicGetVersion(pThis);
826	break;
827
828	case IOAPIC_INDIRECT_INDEX_ARB:
829	if (pThis->u8ApicVer == IOAPIC_VERSION_82093AA)
830	{
831	uValue = ioapicGetArb();
832	break;
833	}
834	RT_FALL_THRU();
835
836	default:
837	uValue = UINT32_C(0xffffffff);
838	Log2(("IOAPIC: Attempt to read register at invalid index %#x\n", uIndex));
839	break;
840	}
841	return uValue;
842	}
843
844
845	/**
846	* Sets the data register.
847	*
848	* @returns Strict VBox status code.
849	* @param pDevIns The device instance.
850	* @param pThis The shared I/O APIC device state.
851	* @param pThisCC The I/O APIC device state for the current context.
852	* @param uValue The value to set.
853	*/
854	static VBOXSTRICTRC ioapicSetData(PPDMDEVINS pDevIns, PIOAPIC pThis, PIOAPICCC pThisCC, uint32_t uValue)
855	{
856	uint8_t const uIndex = pThis->u8Index;
857	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
858	LogFlow(("IOAPIC: ioapicSetData: uIndex=%#x uValue=%#RX32\n", uIndex, uValue));
859
860	if ( uIndex >= IOAPIC_INDIRECT_INDEX_REDIR_TBL_START
861	&& uIndex <= pThis->u8LastRteRegIdx)
862	return ioapicSetRedirTableEntry(pDevIns, pThis, pThisCC, uIndex, uValue);
863
864	if (uIndex == IOAPIC_INDIRECT_INDEX_ID)
865	ioapicSetId(pThis, uValue);
866	else
867	Log2(("IOAPIC: ioapicSetData: Invalid index %#RX32, ignoring write request with uValue=%#RX32\n", uIndex, uValue));
868
869	return VINF_SUCCESS;
870	}
871
872
873	/**
874	* @interface_method_impl{PDMIOAPICREG,pfnSetEoi}
875	*/
876	static DECLCALLBACK(void) ioapicSetEoi(PPDMDEVINS pDevIns, uint8_t u8Vector)
877	{
878	PIOAPIC pThis = PDMDEVINS_2_DATA(pDevIns, PIOAPIC);
879	PIOAPICCC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PIOAPICCC);
880
881	LogFlow(("IOAPIC: ioapicSetEoi: u8Vector=%#x (%u)\n", u8Vector, u8Vector));
882	STAM_COUNTER_INC(&pThis->CTX_SUFF_Z(StatSetEoi));
883
884	bool fRemoteIrrCleared = false;
885	int rc = IOAPIC_LOCK(pDevIns, pThis, pThisCC, VINF_SUCCESS);
886	PDM_CRITSECT_RELEASE_ASSERT_RC_DEV(pDevIns, NULL, rc);
887
888	for (uint8_t idxRte = 0; idxRte < RT_ELEMENTS(pThis->au64RedirTable); idxRte++)
889	{
890	uint64_t const u64Rte = pThis->au64RedirTable[idxRte];
891	/** @todo r=bird: bugref:10073: I've changed it to ignore edge triggered
892	* entries here since the APIC will only call us for those? Not doing so
893	* confuses ended up with spurious HPET/RTC IRQs in SMP linux because of it
894	* sharing the vector with a level-triggered IRQ (like vboxguest) delivered on a
895	* different CPU.
896	*
897	* Maybe we should also/instead filter on the source APIC number? */
898	if ( IOAPIC_RTE_GET_VECTOR(u64Rte) == u8Vector
899	&& IOAPIC_RTE_GET_TRIGGER_MODE(u64Rte) != IOAPIC_RTE_TRIGGER_MODE_EDGE)
900	{
901	#ifdef DEBUG_ramshankar
902	/* This assertion may trigger when restoring saved-states created using the old, incorrect I/O APIC code. */
903	Assert(IOAPIC_RTE_GET_REMOTE_IRR(u64Rte));
904	#endif
905	pThis->au64RedirTable[idxRte] &= ~IOAPIC_RTE_REMOTE_IRR;
906	fRemoteIrrCleared = true;
907	STAM_PROFILE_ADV_STOP(&pThis->aStatLevelAct[idxRte], a);
908	STAM_COUNTER_INC(&pThis->StatEoiReceived);
909	Log2(("IOAPIC: ioapicSetEoi: Cleared remote IRR, idxRte=%u vector=%#x (%u)\n", idxRte, u8Vector, u8Vector));
910
911	/*
912	* Signal the next pending interrupt for this RTE.
913	*/
914	uint32_t const uPinMask = UINT32_C(1) << idxRte;
915	if (pThis->uIrr & uPinMask)
916	ioapicSignalIntrForRte(pDevIns, pThis, pThisCC, idxRte);
917	}
918	}
919
920	IOAPIC_UNLOCK(pDevIns, pThis, pThisCC);
921
922	#ifndef VBOX_WITH_IOMMU_AMD
923	AssertMsg(fRemoteIrrCleared, ("Failed to clear remote IRR for vector %#x (%u)\n", u8Vector, u8Vector));
924	#endif
925	}
926
927
928	/**
929	* @interface_method_impl{PDMIOAPICREG,pfnSetIrq}
930	*/
931	static DECLCALLBACK(void) ioapicSetIrq(PPDMDEVINS pDevIns, PCIBDF uBusDevFn, int iIrq, int iLevel, uint32_t uTagSrc)
932	{
933	RT_NOREF(uBusDevFn); /** @todo r=ramshankar: Remove this argument if it's also unnecessary with Intel IOMMU. */
934	#define IOAPIC_ASSERT_IRQ(a_uBusDevFn, a_idxRte, a_PinMask, a_fForceTag) do { \
935	pThis->au32TagSrc[(a_idxRte)] = (a_fForceTag) \|\| !pThis->au32TagSrc[(a_idxRte)] ? uTagSrc : RT_BIT_32(31); \
936	pThis->uIrr \|= a_PinMask; \
937	ioapicSignalIntrForRte(pDevIns, pThis, pThisCC, (a_idxRte)); \
938	} while (0)
939
940	PIOAPIC pThis = PDMDEVINS_2_DATA(pDevIns, PIOAPIC);
941	PIOAPICCC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PIOAPICCC);
942	LogFlow(("IOAPIC: ioapicSetIrq: iIrq=%d iLevel=%d uTagSrc=%#x\n", iIrq, iLevel, uTagSrc));
943
944	STAM_COUNTER_INC(&pThis->CTX_SUFF_Z(StatSetIrq));
945
946	if (RT_LIKELY((unsigned)iIrq < RT_ELEMENTS(pThis->au64RedirTable)))
947	{
948	int rc = IOAPIC_LOCK(pDevIns, pThis, pThisCC, VINF_SUCCESS);
949	PDM_CRITSECT_RELEASE_ASSERT_RC_DEV(pDevIns, NULL, rc);
950
951	uint8_t const idxRte = iIrq;
952	uint32_t const uPinMask = UINT32_C(1) << idxRte;
953	uint32_t const u32RteLo = RT_LO_U32(pThis->au64RedirTable[idxRte]);
954	uint8_t const u8TriggerMode = IOAPIC_RTE_GET_TRIGGER_MODE(u32RteLo);
955
956	bool fActive = RT_BOOL(iLevel & 1);
957	/** @todo Polarity is busted elsewhere, we need to fix that
958	* first. See @bugref{8386#c7}. */
959	#if 0
960	uint8_t const u8Polarity = IOAPIC_RTE_GET_POLARITY(u32RteLo);
961	fActive ^= u8Polarity; */
962	#endif
963	if (!fActive)
964	{
965	pThis->uIrr &= ~uPinMask;
966	pThis->au32TagSrc[idxRte] = 0;
967	IOAPIC_UNLOCK(pDevIns, pThis, pThisCC);
968	return;
969	}
970
971	bool const fFlipFlop = ((iLevel & PDM_IRQ_LEVEL_FLIP_FLOP) == PDM_IRQ_LEVEL_FLIP_FLOP);
972	if (!fFlipFlop)
973	{
974	ASMBitClear(pThis->bmFlipFlop, idxRte);
975
976	uint32_t const uPrevIrr = pThis->uIrr & uPinMask;
977	if (u8TriggerMode == IOAPIC_RTE_TRIGGER_MODE_EDGE)
978	{
979	/*
980	* For edge-triggered interrupts, we need to act only on a low to high edge transition.
981	* See ICH9 spec. 13.5.7 "REDIR_TBL: Redirection Table (LPC I/F-D31:F0)".
982	*/
983	if (!uPrevIrr)
984	IOAPIC_ASSERT_IRQ(uBusDevFn, idxRte, uPinMask, false);
985	else
986	{
987	STAM_COUNTER_INC(&pThis->StatRedundantEdgeIntr);
988	Log2(("IOAPIC: Redundant edge-triggered interrupt %#x (%u)\n", idxRte, idxRte));
989	}
990	}
991	else
992	{
993	Assert(u8TriggerMode == IOAPIC_RTE_TRIGGER_MODE_LEVEL);
994
995	/*
996	* For level-triggered interrupts, redundant interrupts are not a problem
997	* and will eventually be delivered anyway after an EOI, but our PDM devices
998	* should not typically call us with no change to the level.
999	*/
1000	if (!uPrevIrr)
1001	{ /* likely */ }
1002	else
1003	{
1004	STAM_COUNTER_INC(&pThis->StatRedundantLevelIntr);
1005	Log2(("IOAPIC: Redundant level-triggered interrupt %#x (%u)\n", idxRte, idxRte));
1006	}
1007
1008	IOAPIC_ASSERT_IRQ(uBusDevFn, idxRte, uPinMask, false);
1009	}
1010	}
1011	else
1012	{
1013	/*
1014	* The device is flip-flopping the interrupt line, which implies we should de-assert
1015	* and assert the interrupt line. The interrupt line is left in the asserted state
1016	* after a flip-flop request. The de-assert is a NOP wrts to signaling an interrupt
1017	* hence just the assert is done.
1018	*
1019	* Update @bugref{10073}: We now de-assert the interrupt line once it has been
1020	* delivered to the APIC to prevent it from getting re-delivered by accident (e.g.
1021	* on RTE write or by buggy EOI code). The XT-PIC works differently because of the
1022	* INTA, so it's set IRQ function will do what's described above: first lower the
1023	* interrupt line and then immediately raising it again, leaving the IRR flag set
1024	* most of the time. (How a real HPET/IOAPIC does this is a really good question
1025	* and would be observable if we could get at the IRR register of the IOAPIC...
1026	* Maybe by modifying the RTE? Our code will retrigger the interrupt that way.) */
1027	ASMBitSet(pThis->bmFlipFlop, idxRte);
1028	IOAPIC_ASSERT_IRQ(uBusDevFn, idxRte, uPinMask, true);
1029	}
1030
1031	IOAPIC_UNLOCK(pDevIns, pThis, pThisCC);
1032	}
1033	#undef IOAPIC_ASSERT_IRQ
1034	}
1035
1036
1037	/**
1038	* @interface_method_impl{PDMIOAPICREG,pfnSendMsi}
1039	*/
1040	static DECLCALLBACK(void) ioapicSendMsi(PPDMDEVINS pDevIns, PCIBDF uBusDevFn, PCMSIMSG pMsi, uint32_t uTagSrc)
1041	{
1042	PIOAPICCC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PIOAPICCC);
1043	PIOAPIC pThis = PDMDEVINS_2_DATA(pDevIns, PIOAPIC);
1044	LogFlow(("IOAPIC: ioapicSendMsi: uBusDevFn=%#x Addr=%#RX64 Data=%#RX32 uTagSrc=%#x\n",
1045	uBusDevFn, pMsi->Addr.u64, pMsi->Data.u32, uTagSrc));
1046
1047	XAPICINTR ApicIntr;
1048	RT_ZERO(ApicIntr);
1049
1050	#if defined(VBOX_WITH_IOMMU_AMD) \|\| defined(VBOX_WITH_IOMMU_INTEL)
1051	/*
1052	* The MSI may need to be remapped (or discarded) if an IOMMU is present.
1053	*
1054	* If the Bus:Dev:Fn isn't valid, it is ASSUMED the device generating the
1055	* MSI is the IOMMU itself and hence isn't subjected to remapping. This
1056	* is the case with Intel IOMMUs.
1057	*
1058	* AMD IOMMUs are full fledged PCI devices, hence the BDF will be a
1059	* valid PCI slot, but interrupts generated by the IOMMU will be handled
1060	* by VERR_IOMMU_CANNOT_CALL_SELF case.
1061	*/
1062	MSIMSG MsiOut;
1063	if (PCIBDF_IS_VALID(uBusDevFn))
1064	{
1065	int const rcRemap = pThisCC->pIoApicHlp->pfnIommuMsiRemap(pDevIns, uBusDevFn, pMsi, &MsiOut);
1066	if ( rcRemap == VERR_IOMMU_NOT_PRESENT
1067	\|\| rcRemap == VERR_IOMMU_CANNOT_CALL_SELF)
1068	{ /* likely - assuming majority of VMs don't have IOMMU configured. */ }
1069	else if (RT_SUCCESS(rcRemap))
1070	{
1071	STAM_COUNTER_INC(&pThis->StatIommuRemappedMsi);
1072	pMsi = &MsiOut;
1073	}
1074	else
1075	{
1076	STAM_COUNTER_INC(&pThis->StatIommuDiscardedMsi);
1077	return;
1078	}
1079	}
1080	#else
1081	NOREF(uBusDevFn);
1082	#endif
1083
1084	ioapicGetApicIntrFromMsi(pMsi, &ApicIntr);
1085
1086	/*
1087	* Deliver to the local APIC via the system/3-wire-APIC bus.
1088	*/
1089	STAM_REL_COUNTER_INC(&pThis->aStatVectors[ApicIntr.u8Vector]);
1090
1091	int rc = pThisCC->pIoApicHlp->pfnApicBusDeliver(pDevIns,
1092	ApicIntr.u8Dest,
1093	ApicIntr.u8DestMode,
1094	ApicIntr.u8DeliveryMode,
1095	ApicIntr.u8Vector,
1096	0 /* u8Polarity - N/A */,
1097	ApicIntr.u8TriggerMode,
1098	uTagSrc);
1099	/* Can't reschedule to R3. */
1100	Assert(rc == VINF_SUCCESS \|\| rc == VERR_APIC_INTR_DISCARDED); NOREF(rc);
1101	}
1102
1103
1104	/**
1105	* @callback_method_impl{FNIOMMMIONEWREAD}
1106	*/
1107	static DECLCALLBACK(VBOXSTRICTRC) ioapicMmioRead(PPDMDEVINS pDevIns, void pvUser, RTGCPHYS off, void pv, unsigned cb)
1108	{
1109	PIOAPIC pThis = PDMDEVINS_2_DATA(pDevIns, PIOAPIC);
1110	STAM_COUNTER_INC(&pThis->CTX_SUFF_Z(StatMmioRead));
1111	Assert(cb == 4); RT_NOREF_PV(cb); /* registered for dwords only */
1112	RT_NOREF_PV(pvUser);
1113
1114	VBOXSTRICTRC rc = VINF_SUCCESS;
1115	uint32_t puValue = (uint32_t )pv;
1116	uint32_t offReg = off & IOAPIC_MMIO_REG_MASK;
1117	switch (offReg)
1118	{
1119	case IOAPIC_DIRECT_OFF_INDEX:
1120	*puValue = ioapicGetIndex(pThis);
1121	break;
1122
1123	case IOAPIC_DIRECT_OFF_DATA:
1124	*puValue = ioapicGetData(pThis);
1125	break;
1126
1127	default:
1128	Log2(("IOAPIC: ioapicMmioRead: Invalid offset. off=%#RGp offReg=%#x\n", off, offReg));
1129	rc = VINF_IOM_MMIO_UNUSED_FF;
1130	break;
1131	}
1132
1133	LogFlow(("IOAPIC: ioapicMmioRead: offReg=%#x, returns %#RX32\n", offReg, *puValue));
1134	return rc;
1135	}
1136
1137
1138	/**
1139	* @callback_method_impl{FNIOMMMIONEWWRITE}
1140	*/
1141	static DECLCALLBACK(VBOXSTRICTRC) ioapicMmioWrite(PPDMDEVINS pDevIns, void pvUser, RTGCPHYS off, void const pv, unsigned cb)
1142	{
1143	PIOAPIC pThis = PDMDEVINS_2_DATA(pDevIns, PIOAPIC);
1144	PIOAPICCC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PIOAPICCC);
1145	RT_NOREF_PV(pvUser);
1146
1147	STAM_COUNTER_INC(&pThis->CTX_SUFF_Z(StatMmioWrite));
1148
1149	Assert(!(off & 3));
1150	Assert(cb == 4); RT_NOREF_PV(cb); /* registered for dwords only */
1151
1152	VBOXSTRICTRC rc = VINF_SUCCESS;
1153	uint32_t const uValue = (uint32_t const )pv;
1154	uint32_t const offReg = off & IOAPIC_MMIO_REG_MASK;
1155
1156	LogFlow(("IOAPIC: ioapicMmioWrite: pThis=%p off=%#RGp cb=%u uValue=%#RX32\n", pThis, off, cb, uValue));
1157	switch (offReg)
1158	{
1159	case IOAPIC_DIRECT_OFF_INDEX:
1160	ioapicSetIndex(pThis, uValue);
1161	break;
1162
1163	case IOAPIC_DIRECT_OFF_DATA:
1164	rc = ioapicSetData(pDevIns, pThis, pThisCC, uValue);
1165	break;
1166
1167	case IOAPIC_DIRECT_OFF_EOI:
1168	if (pThis->u8ApicVer == IOAPIC_VERSION_ICH9)
1169	ioapicSetEoi(pDevIns, uValue);
1170	else
1171	Log(("IOAPIC: ioapicMmioWrite: Write to EOI register ignored!\n"));
1172	break;
1173
1174	default:
1175	Log2(("IOAPIC: ioapicMmioWrite: Invalid offset. off=%#RGp offReg=%#x\n", off, offReg));
1176	break;
1177	}
1178
1179	return rc;
1180	}
1181
1182
1183	#ifdef IN_RING3
1184
1185	/** @interface_method_impl{DBGFREGDESC,pfnGet} */
1186	static DECLCALLBACK(int) ioapicR3DbgReg_GetIndex(void *pvUser, PCDBGFREGDESC pDesc, PDBGFREGVAL pValue)
1187	{
1188	RT_NOREF(pDesc);
1189	pValue->u32 = ioapicGetIndex(PDMDEVINS_2_DATA((PPDMDEVINS)pvUser, PCIOAPIC));
1190	return VINF_SUCCESS;
1191	}
1192
1193
1194	/** @interface_method_impl{DBGFREGDESC,pfnSet} */
1195	static DECLCALLBACK(int) ioapicR3DbgReg_SetIndex(void *pvUser, PCDBGFREGDESC pDesc, PCDBGFREGVAL pValue, PCDBGFREGVAL pfMask)
1196	{
1197	RT_NOREF(pDesc, pfMask);
1198	ioapicSetIndex(PDMDEVINS_2_DATA((PPDMDEVINS)pvUser, PIOAPIC), pValue->u8);
1199	return VINF_SUCCESS;
1200	}
1201
1202
1203	/** @interface_method_impl{DBGFREGDESC,pfnGet} */
1204	static DECLCALLBACK(int) ioapicR3DbgReg_GetData(void *pvUser, PCDBGFREGDESC pDesc, PDBGFREGVAL pValue)
1205	{
1206	RT_NOREF(pDesc);
1207	pValue->u32 = ioapicGetData((PDMDEVINS_2_DATA((PPDMDEVINS)pvUser, PCIOAPIC)));
1208	return VINF_SUCCESS;
1209	}
1210
1211
1212	/** @interface_method_impl{DBGFREGDESC,pfnSet} */
1213	static DECLCALLBACK(int) ioapicR3DbgReg_SetData(void *pvUser, PCDBGFREGDESC pDesc, PCDBGFREGVAL pValue, PCDBGFREGVAL pfMask)
1214	{
1215	PPDMDEVINS pDevIns = (PPDMDEVINS)pvUser;
1216	PIOAPIC pThis = PDMDEVINS_2_DATA(pDevIns, PIOAPIC);
1217	PIOAPICCC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PIOAPICCC);
1218	RT_NOREF(pDesc, pfMask);
1219	return VBOXSTRICTRC_VAL(ioapicSetData(pDevIns, pThis, pThisCC, pValue->u32));
1220	}
1221
1222
1223	/** @interface_method_impl{DBGFREGDESC,pfnGet} */
1224	static DECLCALLBACK(int) ioapicR3DbgReg_GetVersion(void *pvUser, PCDBGFREGDESC pDesc, PDBGFREGVAL pValue)
1225	{
1226	PCIOAPIC pThis = PDMDEVINS_2_DATA((PPDMDEVINS)pvUser, PCIOAPIC);
1227	RT_NOREF(pDesc);
1228	pValue->u32 = ioapicGetVersion(pThis);
1229	return VINF_SUCCESS;
1230	}
1231
1232
1233	/** @interface_method_impl{DBGFREGDESC,pfnGet} */
1234	static DECLCALLBACK(int) ioapicR3DbgReg_GetArb(void *pvUser, PCDBGFREGDESC pDesc, PDBGFREGVAL pValue)
1235	{
1236	RT_NOREF(pvUser, pDesc);
1237	pValue->u32 = ioapicGetArb();
1238	return VINF_SUCCESS;
1239	}
1240
1241
1242	/** @interface_method_impl{DBGFREGDESC,pfnGet} */
1243	static DECLCALLBACK(int) ioapicR3DbgReg_GetRte(void *pvUser, PCDBGFREGDESC pDesc, PDBGFREGVAL pValue)
1244	{
1245	PCIOAPIC pThis = PDMDEVINS_2_DATA((PPDMDEVINS)pvUser, PCIOAPIC);
1246	Assert(pDesc->offRegister < RT_ELEMENTS(pThis->au64RedirTable));
1247	pValue->u64 = pThis->au64RedirTable[pDesc->offRegister];
1248	return VINF_SUCCESS;
1249	}
1250
1251
1252	/** @interface_method_impl{DBGFREGDESC,pfnSet} */
1253	static DECLCALLBACK(int) ioapicR3DbgReg_SetRte(void *pvUser, PCDBGFREGDESC pDesc, PCDBGFREGVAL pValue, PCDBGFREGVAL pfMask)
1254	{
1255	RT_NOREF(pfMask);
1256	PIOAPIC pThis = PDMDEVINS_2_DATA((PPDMDEVINS)pvUser, PIOAPIC);
1257	/* No locks, no checks, just do it. */
1258	Assert(pDesc->offRegister < RT_ELEMENTS(pThis->au64RedirTable));
1259	pThis->au64RedirTable[pDesc->offRegister] = pValue->u64;
1260	return VINF_SUCCESS;
1261	}
1262
1263
1264	/** IOREDTBLn sub fields. */
1265	static DBGFREGSUBFIELD const g_aRteSubs[] =
1266	{
1267	{ "vector", 0, 8, 0, 0, NULL, NULL },
1268	{ "dlvr_mode", 8, 3, 0, 0, NULL, NULL },
1269	{ "dest_mode", 11, 1, 0, 0, NULL, NULL },
1270	{ "dlvr_status", 12, 1, 0, DBGFREGSUBFIELD_FLAGS_READ_ONLY, NULL, NULL },
1271	{ "polarity", 13, 1, 0, 0, NULL, NULL },
1272	{ "remote_irr", 14, 1, 0, DBGFREGSUBFIELD_FLAGS_READ_ONLY, NULL, NULL },
1273	{ "trigger_mode", 15, 1, 0, 0, NULL, NULL },
1274	{ "mask", 16, 1, 0, 0, NULL, NULL },
1275	{ "ext_dest_id", 48, 8, 0, DBGFREGSUBFIELD_FLAGS_READ_ONLY, NULL, NULL },
1276	{ "dest", 56, 8, 0, 0, NULL, NULL },
1277	DBGFREGSUBFIELD_TERMINATOR()
1278	};
1279
1280
1281	/** Register descriptors for DBGF. */
1282	static DBGFREGDESC const g_aRegDesc[] =
1283	{
1284	{ "index", DBGFREG_END, DBGFREGVALTYPE_U8, 0, 0, ioapicR3DbgReg_GetIndex, ioapicR3DbgReg_SetIndex, NULL, NULL },
1285	{ "data", DBGFREG_END, DBGFREGVALTYPE_U32, 0, 0, ioapicR3DbgReg_GetData, ioapicR3DbgReg_SetData, NULL, NULL },
1286	{ "version", DBGFREG_END, DBGFREGVALTYPE_U32, DBGFREG_FLAGS_READ_ONLY, 0, ioapicR3DbgReg_GetVersion, NULL, NULL, NULL },
1287	{ "arb", DBGFREG_END, DBGFREGVALTYPE_U32, DBGFREG_FLAGS_READ_ONLY, 0, ioapicR3DbgReg_GetArb, NULL, NULL, NULL },
1288	{ "rte0", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 0, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1289	{ "rte1", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 1, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1290	{ "rte2", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 2, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1291	{ "rte3", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 3, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1292	{ "rte4", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 4, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1293	{ "rte5", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 5, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1294	{ "rte6", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 6, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1295	{ "rte7", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 7, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1296	{ "rte8", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 8, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1297	{ "rte9", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 9, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1298	{ "rte10", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 10, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1299	{ "rte11", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 11, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1300	{ "rte12", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 12, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1301	{ "rte13", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 13, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1302	{ "rte14", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 14, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1303	{ "rte15", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 15, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1304	{ "rte16", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 16, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1305	{ "rte17", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 17, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1306	{ "rte18", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 18, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1307	{ "rte19", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 19, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1308	{ "rte20", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 20, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1309	{ "rte21", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 21, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1310	{ "rte22", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 22, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1311	{ "rte23", DBGFREG_END, DBGFREGVALTYPE_U64, 0, 23, ioapicR3DbgReg_GetRte, ioapicR3DbgReg_SetRte, NULL, &g_aRteSubs[0] },
1312	DBGFREGDESC_TERMINATOR()
1313	};
1314
1315
1316	/**
1317	* @callback_method_impl{FNDBGFHANDLERDEV}
1318	*/
1319	static DECLCALLBACK(void) ioapicR3DbgInfo(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs)
1320	{
1321	RT_NOREF(pszArgs);
1322	PCIOAPIC pThis = PDMDEVINS_2_DATA(pDevIns, PIOAPIC);
1323	LogFlow(("IOAPIC: ioapicR3DbgInfo: pThis=%p pszArgs=%s\n", pThis, pszArgs));
1324
1325	bool const fLegacy = RTStrCmp(pszArgs, "legacy") == 0;
1326
1327	static const char * const s_apszDeliveryModes[] =
1328	{
1329	" fixed",
1330	"lowpri",
1331	" smi",
1332	" rsvd",
1333	" nmi",
1334	" init",
1335	" rsvd",
1336	"extint"
1337	};
1338	static const char * const s_apszDestMode[] = { "phys", "log " };
1339	static const char * const s_apszTrigMode[] = { " edge", "level" };
1340	static const char * const s_apszPolarity[] = { "acthi", "actlo" };
1341	static const char * const s_apszDeliveryStatus[] = { "idle", "pend" };
1342
1343	pHlp->pfnPrintf(pHlp, "I/O APIC at %#010x:\n", IOAPIC_MMIO_BASE_PHYSADDR);
1344
1345	uint32_t const uId = ioapicGetId(pThis);
1346	pHlp->pfnPrintf(pHlp, " ID = %#RX32\n", uId);
1347	pHlp->pfnPrintf(pHlp, " ID = %#x\n", IOAPIC_ID_GET_ID(uId));
1348
1349	uint32_t const uVer = ioapicGetVersion(pThis);
1350	pHlp->pfnPrintf(pHlp, " Version = %#RX32\n", uVer);
1351	pHlp->pfnPrintf(pHlp, " Version = %#x\n", IOAPIC_VER_GET_VER(uVer));
1352	pHlp->pfnPrintf(pHlp, " Pin Assert Reg. Support = %RTbool\n", IOAPIC_VER_HAS_PRQ(uVer));
1353	pHlp->pfnPrintf(pHlp, " Max. Redirection Entry = %u\n", IOAPIC_VER_GET_MRE(uVer));
1354
1355	if (pThis->u8ApicVer == IOAPIC_VERSION_82093AA)
1356	{
1357	uint32_t const uArb = ioapicGetArb();
1358	pHlp->pfnPrintf(pHlp, " Arbitration = %#RX32\n", uArb);
1359	pHlp->pfnPrintf(pHlp, " Arbitration ID = %#x\n", IOAPIC_ARB_GET_ID(uArb));
1360	}
1361
1362	pHlp->pfnPrintf(pHlp, " Current index = %#x\n", ioapicGetIndex(pThis));
1363
1364	pHlp->pfnPrintf(pHlp, " I/O Redirection Table and IRR:\n");
1365	if ( pThis->enmType != IOAPICTYPE_DMAR
1366	\|\| fLegacy)
1367	{
1368	pHlp->pfnPrintf(pHlp, " idx dst_mode dst_addr mask irr trigger rirr polar dlvr_st dlvr_mode vector rte\n");
1369	pHlp->pfnPrintf(pHlp, " ---------------------------------------------------------------------------------------------\n");
1370
1371	uint8_t const idxMaxRte = RT_MIN(pThis->u8MaxRte, RT_ELEMENTS(pThis->au64RedirTable) - 1);
1372	for (uint8_t idxRte = 0; idxRte <= idxMaxRte; idxRte++)
1373	{
1374	const uint64_t u64Rte = pThis->au64RedirTable[idxRte];
1375	const char *pszDestMode = s_apszDestMode[IOAPIC_RTE_GET_DEST_MODE(u64Rte)];
1376	const uint8_t uDest = IOAPIC_RTE_GET_DEST(u64Rte);
1377	const uint8_t uMask = IOAPIC_RTE_GET_MASK(u64Rte);
1378	const char *pszTriggerMode = s_apszTrigMode[IOAPIC_RTE_GET_TRIGGER_MODE(u64Rte)];
1379	const uint8_t uRemoteIrr = IOAPIC_RTE_GET_REMOTE_IRR(u64Rte);
1380	const char *pszPolarity = s_apszPolarity[IOAPIC_RTE_GET_POLARITY(u64Rte)];
1381	const char *pszDeliveryStatus = s_apszDeliveryStatus[IOAPIC_RTE_GET_DELIVERY_STATUS(u64Rte)];
1382	const uint8_t uDeliveryMode = IOAPIC_RTE_GET_DELIVERY_MODE(u64Rte);
1383	Assert(uDeliveryMode < RT_ELEMENTS(s_apszDeliveryModes));
1384	const char *pszDeliveryMode = s_apszDeliveryModes[uDeliveryMode];
1385	const uint8_t uVector = IOAPIC_RTE_GET_VECTOR(u64Rte);
1386
1387	pHlp->pfnPrintf(pHlp, " %02d %s %02x %u %u %s %u %s %s %s %3u (%016llx)\n",
1388	idxRte,
1389	pszDestMode,
1390	uDest,
1391	uMask,
1392	(pThis->uIrr >> idxRte) & 1,
1393	pszTriggerMode,
1394	uRemoteIrr,
1395	pszPolarity,
1396	pszDeliveryStatus,
1397	pszDeliveryMode,
1398	uVector,
1399	u64Rte);
1400	}
1401	}
1402	else
1403	{
1404	pHlp->pfnPrintf(pHlp, " idx intr_idx fmt mask irr trigger rirr polar dlvr_st dlvr_mode vector rte\n");
1405	pHlp->pfnPrintf(pHlp, " ----------------------------------------------------------------------------------------\n");
1406
1407	uint8_t const idxMaxRte = RT_MIN(pThis->u8MaxRte, RT_ELEMENTS(pThis->au64RedirTable) - 1);
1408	for (uint8_t idxRte = 0; idxRte <= idxMaxRte; idxRte++)
1409	{
1410	const uint64_t u64Rte = pThis->au64RedirTable[idxRte];
1411	const uint16_t idxIntrLo = IOAPIC_RTE_GET_INTR_INDEX_LO(u64Rte);
1412	const uint8_t fIntrFormat = IOAPIC_RTE_GET_INTR_FORMAT(u64Rte);
1413	const uint8_t uMask = IOAPIC_RTE_GET_MASK(u64Rte);
1414	const char *pszTriggerMode = s_apszTrigMode[IOAPIC_RTE_GET_TRIGGER_MODE(u64Rte)];
1415	const uint8_t uRemoteIrr = IOAPIC_RTE_GET_REMOTE_IRR(u64Rte);
1416	const char *pszPolarity = s_apszPolarity[IOAPIC_RTE_GET_POLARITY(u64Rte)];
1417	const char *pszDeliveryStatus = s_apszDeliveryStatus[IOAPIC_RTE_GET_DELIVERY_STATUS(u64Rte)];
1418	const uint8_t uDeliveryMode = IOAPIC_RTE_GET_DELIVERY_MODE(u64Rte);
1419	Assert(uDeliveryMode < RT_ELEMENTS(s_apszDeliveryModes));
1420	const char *pszDeliveryMode = s_apszDeliveryModes[uDeliveryMode];
1421	const uint16_t idxIntrHi = IOAPIC_RTE_GET_INTR_INDEX_HI(u64Rte);
1422	const uint8_t uVector = IOAPIC_RTE_GET_VECTOR(u64Rte);
1423	const uint16_t idxIntr = idxIntrLo \| (idxIntrHi << 15);
1424	pHlp->pfnPrintf(pHlp, " %02d %4u %u %u %u %s %u %s %s %s %3u (%016llx)\n",
1425	idxRte,
1426	idxIntr,
1427	fIntrFormat,
1428	uMask,
1429	(pThis->uIrr >> idxRte) & 1,
1430	pszTriggerMode,
1431	uRemoteIrr,
1432	pszPolarity,
1433	pszDeliveryStatus,
1434	pszDeliveryMode,
1435	uVector,
1436	u64Rte);
1437	}
1438	}
1439	}
1440
1441
1442	/**
1443	* @copydoc FNSSMDEVSAVEEXEC
1444	*/
1445	static DECLCALLBACK(int) ioapicR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1446	{
1447	PCIOAPIC pThis = PDMDEVINS_2_DATA(pDevIns, PCIOAPIC);
1448	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
1449	LogFlow(("IOAPIC: ioapicR3SaveExec\n"));
1450
1451	pHlp->pfnSSMPutU32(pSSM, pThis->uIrr);
1452	pHlp->pfnSSMPutU8(pSSM, pThis->u8Id);
1453	pHlp->pfnSSMPutU8(pSSM, pThis->u8Index);
1454	for (uint8_t idxRte = 0; idxRte < RT_ELEMENTS(pThis->au64RedirTable); idxRte++)
1455	pHlp->pfnSSMPutU64(pSSM, pThis->au64RedirTable[idxRte]);
1456
1457	for (uint8_t idx = 0; idx < RT_ELEMENTS(pThis->bmFlipFlop); idx++)
1458	pHlp->pfnSSMPutU64(pSSM, pThis->bmFlipFlop[idx]);
1459
1460	return VINF_SUCCESS;
1461	}
1462
1463
1464	/**
1465	* @copydoc FNSSMDEVLOADEXEC
1466	*/
1467	static DECLCALLBACK(int) ioapicR3LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
1468	{
1469	PIOAPIC pThis = PDMDEVINS_2_DATA(pDevIns, PIOAPIC);
1470	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
1471	LogFlow(("APIC: apicR3LoadExec: uVersion=%u uPass=%#x\n", uVersion, uPass));
1472
1473	Assert(uPass == SSM_PASS_FINAL);
1474	NOREF(uPass);
1475
1476	/* Weed out invalid versions. */
1477	if ( uVersion != IOAPIC_SAVED_STATE_VERSION
1478	&& uVersion != IOAPIC_SAVED_STATE_VERSION_NO_FLIPFLOP_MAP
1479	&& uVersion != IOAPIC_SAVED_STATE_VERSION_VBOX_50)
1480	{
1481	LogRel(("IOAPIC: ioapicR3LoadExec: Invalid/unrecognized saved-state version %u (%#x)\n", uVersion, uVersion));
1482	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
1483	}
1484
1485	if (uVersion >= IOAPIC_SAVED_STATE_VERSION_NO_FLIPFLOP_MAP)
1486	pHlp->pfnSSMGetU32(pSSM, &pThis->uIrr);
1487
1488	pHlp->pfnSSMGetU8V(pSSM, &pThis->u8Id);
1489	pHlp->pfnSSMGetU8V(pSSM, &pThis->u8Index);
1490	for (uint8_t idxRte = 0; idxRte < RT_ELEMENTS(pThis->au64RedirTable); idxRte++)
1491	pHlp->pfnSSMGetU64(pSSM, &pThis->au64RedirTable[idxRte]);
1492
1493	if (uVersion > IOAPIC_SAVED_STATE_VERSION_NO_FLIPFLOP_MAP)
1494	for (uint8_t idx = 0; idx < RT_ELEMENTS(pThis->bmFlipFlop); idx++)
1495	pHlp->pfnSSMGetU64(pSSM, &pThis->bmFlipFlop[idx]);
1496
1497	return VINF_SUCCESS;
1498	}
1499
1500
1501	/**
1502	* @interface_method_impl{PDMDEVREG,pfnReset}
1503	*/
1504	static DECLCALLBACK(void) ioapicR3Reset(PPDMDEVINS pDevIns)
1505	{
1506	PIOAPIC pThis = PDMDEVINS_2_DATA(pDevIns, PIOAPIC);
1507	PIOAPICCC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PIOAPICCC);
1508	LogFlow(("IOAPIC: ioapicR3Reset: pThis=%p\n", pThis));
1509
1510	/* There might be devices threads calling ioapicSetIrq() in parallel, hence the lock. */
1511	IOAPIC_LOCK(pDevIns, pThis, pThisCC, VERR_IGNORED);
1512
1513	pThis->uIrr = 0;
1514	pThis->u8Index = 0;
1515	pThis->u8Id = 0;
1516
1517	for (uint8_t idxRte = 0; idxRte < RT_ELEMENTS(pThis->au64RedirTable); idxRte++)
1518	{
1519	pThis->au64RedirTable[idxRte] = IOAPIC_RTE_MASK;
1520	pThis->au32TagSrc[idxRte] = 0;
1521	}
1522
1523	IOAPIC_UNLOCK(pDevIns, pThis, pThisCC);
1524	}
1525
1526
1527	/**
1528	* @interface_method_impl{PDMDEVREG,pfnRelocate}
1529	*/
1530	static DECLCALLBACK(void) ioapicR3Relocate(PPDMDEVINS pDevIns, RTGCINTPTR offDelta)
1531	{
1532	PIOAPICRC pThisRC = PDMINS_2_DATA_RC(pDevIns, PIOAPICRC);
1533	LogFlow(("IOAPIC: ioapicR3Relocate: pThis=%p offDelta=%RGi\n", PDMDEVINS_2_DATA(pDevIns, PIOAPIC), offDelta));
1534
1535	pThisRC->pIoApicHlp += offDelta;
1536	}
1537
1538
1539	/**
1540	* @interface_method_impl{PDMDEVREG,pfnDestruct}
1541	*/
1542	static DECLCALLBACK(int) ioapicR3Destruct(PPDMDEVINS pDevIns)
1543	{
1544	PDMDEV_CHECK_VERSIONS_RETURN_QUIET(pDevIns);
1545	PIOAPIC pThis = PDMDEVINS_2_DATA(pDevIns, PIOAPIC);
1546	LogFlow(("IOAPIC: ioapicR3Destruct: pThis=%p\n", pThis));
1547
1548	# ifndef IOAPIC_WITH_PDM_CRITSECT
1549	/*
1550	* Destroy the RTE critical section.
1551	*/
1552	if (PDMDevHlpCritSectIsInitialized(pDevIns, &pThis->CritSect))
1553	PDMDevHlpCritSectDelete(pDevIns, &pThis->CritSect);
1554	# else
1555	RT_NOREF_PV(pThis);
1556	# endif
1557
1558	return VINF_SUCCESS;
1559	}
1560
1561
1562	/**
1563	* @interface_method_impl{PDMDEVREG,pfnConstruct}
1564	*/
1565	static DECLCALLBACK(int) ioapicR3Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
1566	{
1567	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
1568	PIOAPIC pThis = PDMDEVINS_2_DATA(pDevIns, PIOAPIC);
1569	PIOAPICCC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PIOAPICCC);
1570	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
1571	LogFlow(("IOAPIC: ioapicR3Construct: pThis=%p iInstance=%d\n", pThis, iInstance));
1572	Assert(iInstance == 0); RT_NOREF(iInstance);
1573
1574	/*
1575	* Validate and read the configuration.
1576	*/
1577	PDMDEV_VALIDATE_CONFIG_RETURN(pDevIns, "NumCPUs\|ChipType\|PCIAddress", "");
1578
1579	/* The number of CPUs is currently unused, but left in CFGM and saved-state in case an ID of 0
1580	upsets some guest which we haven't yet been tested. */
1581	uint32_t cCpus;
1582	int rc = pHlp->pfnCFGMQueryU32Def(pCfg, "NumCPUs", &cCpus, 1);
1583	if (RT_FAILURE(rc))
1584	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to query integer value \"NumCPUs\""));
1585	pThis->cCpus = (uint8_t)cCpus;
1586
1587	char szChipType[16];
1588	rc = pHlp->pfnCFGMQueryStringDef(pCfg, "ChipType", &szChipType[0], sizeof(szChipType), "ICH9");
1589	if (RT_FAILURE(rc))
1590	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to query string value \"ChipType\""));
1591
1592	rc = pHlp->pfnCFGMQueryU32Def(pCfg, "PCIAddress", &pThis->uPciAddress, NIL_PCIBDF);
1593	if (RT_FAILURE(rc))
1594	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to query 32-bit integer \"PCIAddress\""));
1595
1596	if (!strcmp(szChipType, "ICH9"))
1597	{
1598	/* Newer 2007-ish I/O APIC integrated into ICH southbridges. */
1599	pThis->enmType = IOAPICTYPE_ICH9;
1600	pThis->u8ApicVer = IOAPIC_VERSION_ICH9;
1601	pThis->u8IdMask = 0xff;
1602	pThis->u8MaxRte = IOAPIC_MAX_RTE_INDEX;
1603	pThis->u8LastRteRegIdx = IOAPIC_INDIRECT_INDEX_RTE_END;
1604	pThis->u64RteWriteMask = IOAPIC_RTE_VALID_WRITE_MASK_ICH9;
1605	pThis->u64RteReadMask = IOAPIC_RTE_VALID_READ_MASK_ICH9;
1606	}
1607	else if (!strcmp(szChipType, "DMAR"))
1608	{
1609	/* Intel DMAR compatible I/O APIC integrated into ICH southbridges. */
1610	/* Identical to ICH9, but interprets RTEs and MSI address and data fields differently. */
1611	pThis->enmType = IOAPICTYPE_DMAR;
1612	pThis->u8ApicVer = IOAPIC_VERSION_ICH9;
1613	pThis->u8IdMask = 0xff;
1614	pThis->u8MaxRte = IOAPIC_MAX_RTE_INDEX;
1615	pThis->u8LastRteRegIdx = IOAPIC_INDIRECT_INDEX_RTE_END;
1616	pThis->u64RteWriteMask = IOAPIC_RTE_VALID_WRITE_MASK_DMAR;
1617	pThis->u64RteReadMask = IOAPIC_RTE_VALID_READ_MASK_DMAR;
1618	}
1619	else if (!strcmp(szChipType, "82093AA"))
1620	{
1621	/* Older 1995-ish discrete I/O APIC, used in P6 class systems. */
1622	pThis->enmType = IOAPICTYPE_82093AA;
1623	pThis->u8ApicVer = IOAPIC_VERSION_82093AA;
1624	pThis->u8IdMask = 0x0f;
1625	pThis->u8MaxRte = IOAPIC_MAX_RTE_INDEX;
1626	pThis->u8LastRteRegIdx = IOAPIC_INDIRECT_INDEX_RTE_END;
1627	pThis->u64RteWriteMask = IOAPIC_RTE_VALID_WRITE_MASK_82093AA;
1628	pThis->u64RteReadMask = IOAPIC_RTE_VALID_READ_MASK_82093AA;
1629	}
1630	else if (!strcmp(szChipType, "82379AB"))
1631	{
1632	/* Even older 1993-ish I/O APIC built into SIO.A, used in EISA and early PCI systems. */
1633	/* Exact same version and behavior as 82093AA, only the number of RTEs is different. */
1634	pThis->enmType = IOAPICTYPE_82379AB;
1635	pThis->u8ApicVer = IOAPIC_VERSION_82093AA;
1636	pThis->u8IdMask = 0x0f;
1637	pThis->u8MaxRte = IOAPIC_REDUCED_MAX_RTE_INDEX;
1638	pThis->u8LastRteRegIdx = IOAPIC_REDUCED_INDIRECT_INDEX_RTE_END;
1639	pThis->u64RteWriteMask = IOAPIC_RTE_VALID_WRITE_MASK_82093AA;
1640	pThis->u64RteReadMask = IOAPIC_RTE_VALID_READ_MASK_82093AA;
1641	}
1642	else
1643	return PDMDevHlpVMSetError(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES, RT_SRC_POS,
1644	N_("I/O APIC configuration error: The \"ChipType\" value \"%s\" is unsupported"), szChipType);
1645	Log2(("IOAPIC: cCpus=%u fRZEnabled=%RTbool szChipType=%s\n", cCpus, pDevIns->fR0Enabled \| pDevIns->fRCEnabled, szChipType));
1646
1647	/*
1648	* We will use our own critical section for the IOAPIC device.
1649	*/
1650	rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns));
1651	AssertRCReturn(rc, rc);
1652
1653	# ifndef IOAPIC_WITH_PDM_CRITSECT
1654	/*
1655	* Setup the critical section to protect concurrent writes to the RTEs.
1656	*/
1657	rc = PDMDevHlpCritSectInit(pDevIns, &pThis->CritSect, RT_SRC_POS, "IOAPIC");
1658	AssertRCReturn(rc, rc);
1659	# endif
1660
1661	/*
1662	* Register the IOAPIC.
1663	*/
1664	PDMIOAPICREG IoApicReg;
1665	IoApicReg.u32Version = PDM_IOAPICREG_VERSION;
1666	IoApicReg.pfnSetIrq = ioapicSetIrq;
1667	IoApicReg.pfnSendMsi = ioapicSendMsi;
1668	IoApicReg.pfnSetEoi = ioapicSetEoi;
1669	IoApicReg.u32TheEnd = PDM_IOAPICREG_VERSION;
1670	rc = PDMDevHlpIoApicRegister(pDevIns, &IoApicReg, &pThisCC->pIoApicHlp);
1671	AssertRCReturn(rc, rc);
1672	AssertPtr(pThisCC->pIoApicHlp->pfnApicBusDeliver);
1673	AssertPtr(pThisCC->pIoApicHlp->pfnLock);
1674	AssertPtr(pThisCC->pIoApicHlp->pfnUnlock);
1675	AssertPtr(pThisCC->pIoApicHlp->pfnLockIsOwner);
1676	AssertPtr(pThisCC->pIoApicHlp->pfnIommuMsiRemap);
1677
1678	/*
1679	* Register MMIO region.
1680	*/
1681	rc = PDMDevHlpMmioCreateAndMap(pDevIns, IOAPIC_MMIO_BASE_PHYSADDR, IOAPIC_MMIO_SIZE, ioapicMmioWrite, ioapicMmioRead,
1682	IOMMMIO_FLAGS_READ_DWORD \| IOMMMIO_FLAGS_WRITE_DWORD_ZEROED, "I/O APIC", &pThis->hMmio);
1683	AssertRCReturn(rc, rc);
1684
1685	/*
1686	* Register the saved state.
1687	*/
1688	rc = PDMDevHlpSSMRegister(pDevIns, IOAPIC_SAVED_STATE_VERSION, sizeof(*pThis), ioapicR3SaveExec, ioapicR3LoadExec);
1689	AssertRCReturn(rc, rc);
1690
1691	/*
1692	* Register debugger info item.
1693	*/
1694	rc = PDMDevHlpDBGFInfoRegister(pDevIns, "ioapic", "Display IO APIC state.", ioapicR3DbgInfo);
1695	AssertRCReturn(rc, rc);
1696
1697	/*
1698	* Register debugger register access.
1699	*/
1700	rc = PDMDevHlpDBGFRegRegister(pDevIns, g_aRegDesc);
1701	AssertRCReturn(rc, rc);
1702
1703	# ifdef VBOX_WITH_STATISTICS
1704	/*
1705	* Statistics.
1706	*/
1707	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatMmioReadRZ, STAMTYPE_COUNTER, "RZ/MmioRead", STAMUNIT_OCCURENCES, "Number of IOAPIC MMIO reads in RZ.");
1708	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatMmioWriteRZ, STAMTYPE_COUNTER, "RZ/MmioWrite", STAMUNIT_OCCURENCES, "Number of IOAPIC MMIO writes in RZ.");
1709	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatSetIrqRZ, STAMTYPE_COUNTER, "RZ/SetIrq", STAMUNIT_OCCURENCES, "Number of IOAPIC SetIrq calls in RZ.");
1710	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatSetEoiRZ, STAMTYPE_COUNTER, "RZ/SetEoi", STAMUNIT_OCCURENCES, "Number of IOAPIC SetEoi calls in RZ.");
1711
1712	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatMmioReadR3, STAMTYPE_COUNTER, "R3/MmioRead", STAMUNIT_OCCURENCES, "Number of IOAPIC MMIO reads in R3");
1713	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatMmioWriteR3, STAMTYPE_COUNTER, "R3/MmioWrite", STAMUNIT_OCCURENCES, "Number of IOAPIC MMIO writes in R3.");
1714	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatSetIrqR3, STAMTYPE_COUNTER, "R3/SetIrq", STAMUNIT_OCCURENCES, "Number of IOAPIC SetIrq calls in R3.");
1715	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatSetEoiR3, STAMTYPE_COUNTER, "R3/SetEoi", STAMUNIT_OCCURENCES, "Number of IOAPIC SetEoi calls in R3.");
1716
1717	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatRedundantEdgeIntr, STAMTYPE_COUNTER, "RedundantEdgeIntr", STAMUNIT_OCCURENCES, "Number of redundant edge-triggered interrupts (no IRR change).");
1718	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatRedundantLevelIntr, STAMTYPE_COUNTER, "RedundantLevelIntr", STAMUNIT_OCCURENCES, "Number of redundant level-triggered interrupts (no IRR change).");
1719	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatSuppressedLevelIntr, STAMTYPE_COUNTER, "SuppressedLevelIntr", STAMUNIT_OCCURENCES, "Number of suppressed level-triggered interrupts by remote IRR.");
1720
1721	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatIommuRemappedIntr, STAMTYPE_COUNTER, "Iommu/RemappedIntr", STAMUNIT_OCCURENCES, "Number of interrupts remapped by the IOMMU.");
1722	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatIommuRemappedMsi, STAMTYPE_COUNTER, "Iommu/RemappedMsi", STAMUNIT_OCCURENCES, "Number of MSIs remapped by the IOMMU.");
1723	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatIommuDiscardedIntr, STAMTYPE_COUNTER, "Iommu/DiscardedIntr", STAMUNIT_OCCURENCES, "Number of interrupts discarded by the IOMMU.");
1724	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatIommuDiscardedMsi, STAMTYPE_COUNTER, "Iommu/DiscardedMsi", STAMUNIT_OCCURENCES, "Number of MSIs discarded by the IOMMU.");
1725
1726	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatSetRteContention, STAMTYPE_COUNTER, "CritSect/ContentionSetRte", STAMUNIT_OCCURENCES, "Number of times the critsect is busy during RTE writes causing trips to R3.");
1727
1728	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatLevelIrqSent, STAMTYPE_COUNTER, "LevelIntr/Sent", STAMUNIT_OCCURENCES, "Number of level-triggered interrupts sent to the local APIC(s).");
1729	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatEoiReceived, STAMTYPE_COUNTER, "LevelIntr/Recv", STAMUNIT_OCCURENCES, "Number of EOIs received for level-triggered interrupts from the local APIC(s).");
1730
1731	for (size_t i = 0; i < RT_ELEMENTS(pThis->aStatLevelAct); ++i)
1732	PDMDevHlpSTAMRegisterF(pDevIns, &pThis->aStatLevelAct[i], STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Time spent in the level active state", "IntPending/%02x", i);
1733	# endif
1734	for (size_t i = 0; i < RT_ELEMENTS(pThis->aStatVectors); i++)
1735	PDMDevHlpSTAMRegisterF(pDevIns, &pThis->aStatVectors[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
1736	"Number of ioapicSendMsi/pfnApicBusDeliver calls for the vector.", "Vectors/%02x", i);
1737
1738	/*
1739	* Init. the device state.
1740	*/
1741	LogRel(("IOAPIC: Version=%d.%d ChipType=%s\n", pThis->u8ApicVer >> 4, pThis->u8ApicVer & 0x0f, szChipType));
1742	ioapicR3Reset(pDevIns);
1743
1744	return VINF_SUCCESS;
1745	}
1746
1747	#else /* !IN_RING3 */
1748
1749	/**
1750	* @callback_method_impl{PDMDEVREGR0,pfnConstruct}
1751	*/
1752	static DECLCALLBACK(int) ioapicRZConstruct(PPDMDEVINS pDevIns)
1753	{
1754	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
1755	PIOAPIC pThis = PDMDEVINS_2_DATA(pDevIns, PIOAPIC);
1756	PIOAPICCC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PIOAPICCC);
1757
1758	int rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns));
1759	AssertRCReturn(rc, rc);
1760
1761	PDMIOAPICREG IoApicReg;
1762	IoApicReg.u32Version = PDM_IOAPICREG_VERSION;
1763	IoApicReg.pfnSetIrq = ioapicSetIrq;
1764	IoApicReg.pfnSendMsi = ioapicSendMsi;
1765	IoApicReg.pfnSetEoi = ioapicSetEoi;
1766	IoApicReg.u32TheEnd = PDM_IOAPICREG_VERSION;
1767	rc = PDMDevHlpIoApicSetUpContext(pDevIns, &IoApicReg, &pThisCC->pIoApicHlp);
1768	AssertRCReturn(rc, rc);
1769	AssertPtr(pThisCC->pIoApicHlp->pfnApicBusDeliver);
1770	AssertPtr(pThisCC->pIoApicHlp->pfnLock);
1771	AssertPtr(pThisCC->pIoApicHlp->pfnUnlock);
1772	AssertPtr(pThisCC->pIoApicHlp->pfnLockIsOwner);
1773	AssertPtr(pThisCC->pIoApicHlp->pfnIommuMsiRemap);
1774
1775	rc = PDMDevHlpMmioSetUpContext(pDevIns, pThis->hMmio, ioapicMmioWrite, ioapicMmioRead, NULL /pvUser/);
1776	AssertRCReturn(rc, rc);
1777
1778	return VINF_SUCCESS;
1779	}
1780
1781	#endif /* !IN_RING3 */
1782
1783	/**
1784	* IO APIC device registration structure.
1785	*/
1786	const PDMDEVREG g_DeviceIOAPIC =
1787	{
1788	/* .u32Version = */ PDM_DEVREG_VERSION,
1789	/* .uReserved0 = */ 0,
1790	/* .szName = */ "ioapic",
1791	/* .fFlags = */ PDM_DEVREG_FLAGS_DEFAULT_BITS \| PDM_DEVREG_FLAGS_RZ \| PDM_DEVREG_FLAGS_NEW_STYLE
1792	\| PDM_DEVREG_FLAGS_REQUIRE_R0 \| PDM_DEVREG_FLAGS_REQUIRE_RC,
1793	/* .fClass = */ PDM_DEVREG_CLASS_PIC,
1794	/* .cMaxInstances = */ 1,
1795	/* .uSharedVersion = */ 42,
1796	/* .cbInstanceShared = */ sizeof(IOAPIC),
1797	/* .cbInstanceCC = */ sizeof(IOAPICCC),
1798	/* .cbInstanceRC = */ sizeof(IOAPICRC),
1799	/* .cMaxPciDevices = */ 0,
1800	/* .cMaxMsixVectors = */ 0,
1801	/* .pszDescription = */ "I/O Advanced Programmable Interrupt Controller (IO-APIC) Device",
1802	#if defined(IN_RING3)
1803	/* .pszRCMod = */ "VBoxDDRC.rc",
1804	/* .pszR0Mod = */ "VBoxDDR0.r0",
1805	/* .pfnConstruct = */ ioapicR3Construct,
1806	/* .pfnDestruct = */ ioapicR3Destruct,
1807	/* .pfnRelocate = */ ioapicR3Relocate,
1808	/* .pfnMemSetup = */ NULL,
1809	/* .pfnPowerOn = */ NULL,
1810	/* .pfnReset = */ ioapicR3Reset,
1811	/* .pfnSuspend = */ NULL,
1812	/* .pfnResume = */ NULL,
1813	/* .pfnAttach = */ NULL,
1814	/* .pfnDetach = */ NULL,
1815	/* .pfnQueryInterface = */ NULL,
1816	/* .pfnInitComplete = */ NULL,
1817	/* .pfnPowerOff = */ NULL,
1818	/* .pfnSoftReset = */ NULL,
1819	/* .pfnReserved0 = */ NULL,
1820	/* .pfnReserved1 = */ NULL,
1821	/* .pfnReserved2 = */ NULL,
1822	/* .pfnReserved3 = */ NULL,
1823	/* .pfnReserved4 = */ NULL,
1824	/* .pfnReserved5 = */ NULL,
1825	/* .pfnReserved6 = */ NULL,
1826	/* .pfnReserved7 = */ NULL,
1827	#elif defined(IN_RING0)
1828	/* .pfnEarlyConstruct = */ NULL,
1829	/* .pfnConstruct = */ ioapicRZConstruct,
1830	/* .pfnDestruct = */ NULL,
1831	/* .pfnFinalDestruct = */ NULL,
1832	/* .pfnRequest = */ NULL,
1833	/* .pfnReserved0 = */ NULL,
1834	/* .pfnReserved1 = */ NULL,
1835	/* .pfnReserved2 = */ NULL,
1836	/* .pfnReserved3 = */ NULL,
1837	/* .pfnReserved4 = */ NULL,
1838	/* .pfnReserved5 = */ NULL,
1839	/* .pfnReserved6 = */ NULL,
1840	/* .pfnReserved7 = */ NULL,
1841	#elif defined(IN_RC)
1842	/* .pfnConstruct = */ ioapicRZConstruct,
1843	/* .pfnReserved0 = */ NULL,
1844	/* .pfnReserved1 = */ NULL,
1845	/* .pfnReserved2 = */ NULL,
1846	/* .pfnReserved3 = */ NULL,
1847	/* .pfnReserved4 = */ NULL,
1848	/* .pfnReserved5 = */ NULL,
1849	/* .pfnReserved6 = */ NULL,
1850	/* .pfnReserved7 = */ NULL,
1851	#else
1852	# error "Not in IN_RING3, IN_RING0 or IN_RC!"
1853	#endif
1854	/* .u32VersionEnd = */ PDM_DEVREG_VERSION
1855	};
1856
1857
1858	#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */
1859

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source: vbox/trunk/src/VBox/Devices/PC/DevIoApic.cpp@ 103416

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