DevPIC.cpp@ 11280

Last change on this file since 11280 was 11265, checked in by vboxsync, 16 years ago
DevPIC: dropped vl_vbox.h
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File size: 37.8 KB

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1	/* $Id: DevPIC.cpp 11265 2008-08-08 16:10:06Z vboxsync $ */
2	/** @file
3	* DevPIC - Intel 8259 Programmable Interrupt Controller (PIC) Device.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
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	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18	* Clara, CA 95054 USA or visit http://www.sun.com if you need
19	* additional information or have any questions.
20	*/
21
22	/*******************************************************************************
23	* Header Files *
24	*******************************************************************************/
25	#define LOG_GROUP LOG_GROUP_DEV_PIC
26	#include <VBox/pdmdev.h>
27	#include <VBox/log.h>
28	#include <iprt/assert.h>
29	#include <iprt/string.h>
30
31	#include "../Builtins.h"
32
33
34	/*******************************************************************************
35	* Defined Constants And Macros *
36	*******************************************************************************/
37	/** @def PIC_LOCK
38	* Acquires the PDM lock. This is a NOP if locking is disabled. */
39	/** @def PIC_UNLOCK
40	* Releases the PDM lock. This is a NOP if locking is disabled. */
41	#define PIC_LOCK(pThis, rc) \
42	do { \
43	int rc2 = (pThis)->CTX_SUFF(pPicHlp)->pfnLock((pThis)->CTX_SUFF(pDevIns), rc); \
44	if (rc2 != VINF_SUCCESS) \
45	return rc2; \
46	} while (0)
47	#define PIC_UNLOCK(pThis) \
48	(pThis)->CTX_SUFF(pPicHlp)->pfnUnlock((pThis)->CTX_SUFF(pDevIns))
49
50
51	#ifndef VBOX_DEVICE_STRUCT_TESTCASE
52	/*******************************************************************************
53	* Internal Functions *
54	*******************************************************************************/
55	__BEGIN_DECLS
56
57	PDMBOTHCBDECL(void) picSetIrq(PPDMDEVINS pDevIns, int iIrq, int iLevel);
58	PDMBOTHCBDECL(int) picGetInterrupt(PPDMDEVINS pDevIns);
59	PDMBOTHCBDECL(int) picIOPortRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb);
60	PDMBOTHCBDECL(int) picIOPortWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb);
61	PDMBOTHCBDECL(int) picIOPortElcrRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb);
62	PDMBOTHCBDECL(int) picIOPortElcrWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb);
63
64	__END_DECLS
65	#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */
66
67
68	/*
69	* QEMU 8259 interrupt controller emulation
70	*
71	* Copyright (c) 2003-2004 Fabrice Bellard
72	*
73	* Permission is hereby granted, free of charge, to any person obtaining a copy
74	* of this software and associated documentation files (the "Software"), to deal
75	* in the Software without restriction, including without limitation the rights
76	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
77	* copies of the Software, and to permit persons to whom the Software is
78	* furnished to do so, subject to the following conditions:
79	*
80	* The above copyright notice and this permission notice shall be included in
81	* all copies or substantial portions of the Software.
82	*
83	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
84	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
85	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
86	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
87	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
88	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
89	* THE SOFTWARE.
90	*/
91
92	/* debug PIC */
93	#define DEBUG_PIC
94
95	/#define DEBUG_IRQ_COUNT/
96
97	typedef struct PicState {
98	uint8_t last_irr; /* edge detection */
99	uint8_t irr; /* interrupt request register */
100	uint8_t imr; /* interrupt mask register */
101	uint8_t isr; /* interrupt service register */
102	uint8_t priority_add; /* highest irq priority */
103	uint8_t irq_base;
104	uint8_t read_reg_select;
105	uint8_t poll;
106	uint8_t special_mask;
107	uint8_t init_state;
108	uint8_t auto_eoi;
109	uint8_t rotate_on_auto_eoi;
110	uint8_t special_fully_nested_mode;
111	uint8_t init4; /* true if 4 byte init */
112	uint8_t elcr; /* PIIX edge/trigger selection*/
113	uint8_t elcr_mask;
114	/** Pointer to the device instance, R3 Ptr. */
115	PPDMDEVINSR3 pDevInsR3;
116	/** Pointer to the device instance, R0 Ptr. */
117	PPDMDEVINSR0 pDevInsR0;
118	/** Pointer to the device instance, RC Ptr. */
119	PPDMDEVINSRC pDevInsRC;
120	RTRCPTR Alignment0; /*< Structure size alignment. /
121	} PicState;
122
123	/**
124	* A PIC device instance data.
125	*/
126	typedef struct DEVPIC
127	{
128	/** The two interrupt controllers. */
129	PicState aPics[2];
130	/** Pointer to the device instance - R3 Ptr. */
131	PPDMDEVINSR3 pDevInsR3;
132	/** Pointer to the PIC R3 helpers. */
133	PCPDMPICHLPR3 pPicHlpR3;
134	/** Pointer to the device instance - R0 Ptr. */
135	PPDMDEVINSR0 pDevInsR0;
136	/** Pointer to the PIC R0 helpers. */
137	PCPDMPICHLPR0 pPicHlpR0;
138	/** Pointer to the device instance - RC Ptr. */
139	PPDMDEVINSRC pDevInsRC;
140	/** Pointer to the PIC RC helpers. */
141	PCPDMPICHLPRC pPicHlpRC;
142	#ifdef VBOX_WITH_STATISTICS
143	STAMCOUNTER StatSetIrqGC;
144	STAMCOUNTER StatSetIrqHC;
145	STAMCOUNTER StatClearedActiveIRQ2;
146	STAMCOUNTER StatClearedActiveMasterIRQ;
147	STAMCOUNTER StatClearedActiveSlaveIRQ;
148	#endif
149	} DEVPIC, *PDEVPIC;
150
151
152	#ifndef VBOX_DEVICE_STRUCT_TESTCASE
153	#ifdef LOG_ENABLED
154	static inline void DumpPICState(PicState s, const char szFn)
155	{
156	PDEVPIC pThis = PDMINS_2_DATA(s->CTX_SUFF(pDevIns), PDEVPIC);
157
158	Log2(("%s: pic%d: elcr=%x last_irr=%x irr=%x imr=%x isr=%x irq_base=%x\n",
159	szFn, (&pThis->aPics[0] == s) ? 0 : 1,
160	s->elcr, s->last_irr, s->irr, s->imr, s->isr, s->irq_base));
161	}
162	#else
163	# define DumpPICState(pThis, szFn) do { } while (0)
164	#endif
165
166	/* set irq level. If an edge is detected, then the IRR is set to 1 */
167	static inline void pic_set_irq1(PicState *s, int irq, int level)
168	{
169	int mask;
170	Log(("pic_set_irq1: irq=%d level=%d\n", irq, level));
171	mask = 1 << irq;
172	if (s->elcr & mask) {
173	/* level triggered */
174	if (level) {
175	Log2(("pic_set_irq1(ls) irr=%d irrnew=%d\n", s->irr, s->irr \| mask));
176	s->irr \|= mask;
177	s->last_irr \|= mask;
178	} else {
179	Log2(("pic_set_irq1(lc) irr=%d irrnew=%d\n", s->irr, s->irr & ~mask));
180	s->irr &= ~mask;
181	s->last_irr &= ~mask;
182	}
183	} else {
184	/* edge triggered */
185	if (level) {
186	if ((s->last_irr & mask) == 0)
187	{
188	Log2(("pic_set_irq1 irr=%x last_irr=%x\n", s->irr \| mask, s->last_irr));
189	s->irr \|= mask;
190	}
191	s->last_irr \|= mask;
192	} else {
193	s->last_irr &= ~mask;
194	}
195	}
196	DumpPICState(s, "pic_set_irq1");
197	}
198
199	/* return the highest priority found in mask (highest = smallest
200	number). Return 8 if no irq */
201	static inline int get_priority(PicState *s, int mask)
202	{
203	int priority;
204	if (mask == 0)
205	return 8;
206	priority = 0;
207	while ((mask & (1 << ((priority + s->priority_add) & 7))) == 0)
208	priority++;
209	return priority;
210	}
211
212	/* return the pic wanted interrupt. return -1 if none */
213	static int pic_get_irq(PicState *s)
214	{
215	PicState *pics = &(PDMINS_2_DATA(s->CTX_SUFF(pDevIns), PDEVPIC))->aPics[0];
216	int mask, cur_priority, priority;
217	Log(("pic_get_irq%d: mask=%x\n", (s == pics) ? 0 : 1, s->irr & ~s->imr));
218	DumpPICState(s, "pic_get_irq");
219
220	mask = s->irr & ~s->imr;
221	priority = get_priority(s, mask);
222	Log(("pic_get_irq: priority=%x\n", priority));
223	if (priority == 8)
224	return -1;
225	/* compute current priority. If special fully nested mode on the
226	master, the IRQ coming from the slave is not taken into account
227	for the priority computation. */
228	mask = s->isr;
229	if (s->special_fully_nested_mode && s == &pics[0])
230	mask &= ~(1 << 2);
231	cur_priority = get_priority(s, mask);
232	Log(("pic_get_irq%d: cur_priority=%x pending=%d\n", (s == pics) ? 0 : 1, cur_priority, (priority == 8) ? -1 : (priority + s->priority_add) & 7));
233	if (priority < cur_priority) {
234	/* higher priority found: an irq should be generated */
235	return (priority + s->priority_add) & 7;
236	} else {
237	return -1;
238	}
239	}
240
241	/* raise irq to CPU if necessary. must be called every time the active
242	irq may change */
243	static int pic_update_irq(PDEVPIC pThis)
244	{
245	PicState *pics = &pThis->aPics[0];
246	int irq2, irq;
247
248	/* first look at slave pic */
249	irq2 = pic_get_irq(&pics[1]);
250	Log(("pic_update_irq irq2=%d\n", irq2));
251	if (irq2 >= 0) {
252	/* if irq request by slave pic, signal master PIC */
253	pic_set_irq1(&pics[0], 2, 1);
254	pic_set_irq1(&pics[0], 2, 0);
255	}
256	/* look at requested irq */
257	irq = pic_get_irq(&pics[0]);
258	if (irq >= 0)
259	{
260	/* If irq 2 is pending on the master pic, then there must be one pending on the slave pic too! Otherwise we'll get
261	* spurious slave interrupts in picGetInterrupt.
262	*/
263	if (irq != 2 \|\| irq2 != -1)
264	{
265	#if defined(DEBUG_PIC)
266	int i;
267	for(i = 0; i < 2; i++) {
268	Log(("pic%d: imr=%x irr=%x padd=%d\n",
269	i, pics[i].imr, pics[i].irr,
270	pics[i].priority_add));
271	}
272	Log(("pic: cpu_interrupt\n"));
273	#endif
274	pThis->CTX_SUFF(pPicHlp)->pfnSetInterruptFF(pThis->CTX_SUFF(pDevIns));
275	}
276	else
277	{
278	STAM_COUNTER_INC(&pThis->StatClearedActiveIRQ2);
279	Log(("pic_update_irq: irq 2 is active, but no interrupt is pending on the slave pic!!\n"));
280	/* Clear it here, so lower priority interrupts can still be dispatched. */
281
282	/* if this was the only pending irq, then we must clear the interrupt ff flag */
283	pThis->CTX_SUFF(pPicHlp)->pfnClearInterruptFF(pThis->CTX_SUFF(pDevIns));
284
285	/** @note Is this correct? */
286	pics[0].irr &= ~(1 << 2);
287
288	/* Call ourselves again just in case other interrupts are pending */
289	return pic_update_irq(pThis);
290	}
291	}
292	else
293	{
294	Log(("pic_update_irq: no interrupt is pending!!\n"));
295
296	/* we must clear the interrupt ff flag */
297	pThis->CTX_SUFF(pPicHlp)->pfnClearInterruptFF(pThis->CTX_SUFF(pDevIns));
298	}
299	return VINF_SUCCESS;
300	}
301
302	/** @note if an interrupt line state changes from unmasked to masked, then it must be deactivated when currently pending! */
303	static void pic_update_imr(PDEVPIC pThis, PicState *s, uint8_t val)
304	{
305	int irq, intno;
306	PicState *pActivePIC;
307
308	/* Query the current pending irq, if any. */
309	pActivePIC = &pThis->aPics[0];
310	intno = irq = pic_get_irq(pActivePIC);
311	if (irq == 2)
312	{
313	pActivePIC = &pThis->aPics[1];
314	irq = pic_get_irq(pActivePIC);
315	intno = irq + 8;
316	}
317
318	/* Update IMR */
319	s->imr = val;
320
321	/* If an interrupt is pending and now masked, then clear the FF flag. */
322	if ( irq >= 0
323	&& ((1 << irq) & ~pActivePIC->imr) == 0)
324	{
325	Log(("pic_update_imr: pic0: elcr=%x last_irr=%x irr=%x imr=%x isr=%x irq_base=%x\n",
326	pThis->aPics[0].elcr, pThis->aPics[0].last_irr, pThis->aPics[0].irr, pThis->aPics[0].imr, pThis->aPics[0].isr, pThis->aPics[0].irq_base));
327	Log(("pic_update_imr: pic1: elcr=%x last_irr=%x irr=%x imr=%x isr=%x irq_base=%x\n",
328	pThis->aPics[1].elcr, pThis->aPics[1].last_irr, pThis->aPics[1].irr, pThis->aPics[1].imr, pThis->aPics[1].isr, pThis->aPics[1].irq_base));
329
330	/* Clear pending IRQ 2 on master controller in case of slave interrupt. */
331	/** @todo Is this correct? */
332	if (intno > 7)
333	{
334	pThis->aPics[0].irr &= ~(1 << 2);
335	STAM_COUNTER_INC(&pThis->StatClearedActiveSlaveIRQ);
336	}
337	else
338	STAM_COUNTER_INC(&pThis->StatClearedActiveMasterIRQ);
339
340	Log(("pic_update_imr: clear pending interrupt %d\n", intno));
341	pThis->CTX_SUFF(pPicHlp)->pfnClearInterruptFF(pThis->CTX_SUFF(pDevIns));
342	}
343	}
344
345
346	/**
347	* Set the an IRQ.
348	*
349	* @param pDevIns Device instance of the PICs.
350	* @param iIrq IRQ number to set.
351	* @param iLevel IRQ level.
352	*/
353	PDMBOTHCBDECL(void) picSetIrq(PPDMDEVINS pDevIns, int iIrq, int iLevel)
354	{
355	PDEVPIC pThis = PDMINS_2_DATA(pDevIns, PDEVPIC);
356	Assert(pThis->CTX_SUFF(pDevIns) == pDevIns);
357	Assert(pThis->aPics[0].CTX_SUFF(pDevIns) == pDevIns);
358	Assert(pThis->aPics[1].CTX_SUFF(pDevIns) == pDevIns);
359	AssertMsg(iIrq < 16, ("iIrq=%d\n", iIrq));
360
361	Log(("picSetIrq %d %d\n", iIrq, iLevel));
362	DumpPICState(&pThis->aPics[0], "picSetIrq");
363	DumpPICState(&pThis->aPics[1], "picSetIrq");
364	STAM_COUNTER_INC(&pThis->CTXSUFF(StatSetIrq));
365	pic_set_irq1(&pThis->aPics[iIrq >> 3], iIrq & 7, iLevel & PDM_IRQ_LEVEL_HIGH);
366	pic_update_irq(pThis);
367	if ((iLevel & PDM_IRQ_LEVEL_FLIP_FLOP) == PDM_IRQ_LEVEL_FLIP_FLOP)
368	{
369	pic_set_irq1(&pThis->aPics[iIrq >> 3], iIrq & 7, 0);
370	pic_update_irq(pThis);
371	}
372	}
373
374
375	/* acknowledge interrupt 'irq' */
376	static inline void pic_intack(PicState *s, int irq)
377	{
378	if (s->auto_eoi) {
379	if (s->rotate_on_auto_eoi)
380	s->priority_add = (irq + 1) & 7;
381	} else {
382	s->isr \|= (1 << irq);
383	}
384	/* We don't clear a level sensitive interrupt here */
385	if (!(s->elcr & (1 << irq)))
386	{
387	Log2(("pic_intack: irr=%x irrnew=%x\n", s->irr, s->irr & ~(1 << irq)));
388	s->irr &= ~(1 << irq);
389	}
390	}
391
392
393	/**
394	* Get a pending interrupt.
395	*
396	* @returns Pending interrupt number.
397	* @param pDevIns Device instance of the PICs.
398	*/
399	PDMBOTHCBDECL(int) picGetInterrupt(PPDMDEVINS pDevIns)
400	{
401	PDEVPIC pThis = PDMINS_2_DATA(pDevIns, PDEVPIC);
402	int irq;
403	int irq2;
404	int intno;
405
406	/* read the irq from the PIC */
407	DumpPICState(&pThis->aPics[0], "picGetInterrupt");
408	DumpPICState(&pThis->aPics[1], "picGetInterrupt");
409
410	irq = pic_get_irq(&pThis->aPics[0]);
411	if (irq >= 0)
412	{
413	pic_intack(&pThis->aPics[0], irq);
414	if (irq == 2)
415	{
416	irq2 = pic_get_irq(&pThis->aPics[1]);
417	if (irq2 >= 0) {
418	pic_intack(&pThis->aPics[1], irq2);
419	}
420	else
421	{
422	/* spurious IRQ on slave controller (impossible) */
423	AssertMsgFailed(("picGetInterrupt: spurious IRQ on slave controller\n"));
424	irq2 = 7;
425	}
426	intno = pThis->aPics[1].irq_base + irq2;
427	Log2(("picGetInterrupt1: %x base=%x irq=%x\n", intno, pThis->aPics[1].irq_base, irq2));
428	irq = irq2 + 8;
429	}
430	else {
431	intno = pThis->aPics[0].irq_base + irq;
432	Log2(("picGetInterrupt0: %x base=%x irq=%x\n", intno, pThis->aPics[0].irq_base, irq));
433	}
434	}
435	else
436	{
437	/* spurious IRQ on host controller (impossible) */
438	AssertMsgFailed(("picGetInterrupt: spurious IRQ on master controller\n"));
439	irq = 7;
440	intno = pThis->aPics[0].irq_base + irq;
441	}
442	pic_update_irq(pThis);
443
444	Log(("picGetInterrupt: 0x%02x pending 0:%d 1:%d\n", intno, pic_get_irq(&pThis->aPics[0]), pic_get_irq(&pThis->aPics[1])));
445
446	return intno;
447	}
448
449	static void pic_reset(PicState *s)
450	{
451	PPDMDEVINSR3 pDevInsR3 = s->pDevInsR3;
452	PPDMDEVINSR0 pDevInsR0 = s->pDevInsR0;
453	PPDMDEVINSRC pDevInsRC = s->pDevInsRC;
454	int elcr_mask = s->elcr_mask;
455	int elcr = s->elcr;
456
457	memset(s, 0, sizeof(PicState));
458
459	s->elcr = elcr;
460	s->elcr_mask = elcr_mask;
461	s->pDevInsRC = pDevInsRC;
462	s->pDevInsR0 = pDevInsR0;
463	s->pDevInsR3 = pDevInsR3;
464	}
465
466
467	static int pic_ioport_write(void *opaque, uint32_t addr, uint32_t val)
468	{
469	PicState s = (PicState)opaque;
470	PDEVPIC pThis = PDMINS_2_DATA(s->CTX_SUFF(pDevIns), PDEVPIC);
471	int rc = VINF_SUCCESS;
472	int priority, cmd, irq;
473
474	Log(("pic_write: addr=0x%02x val=0x%02x\n", addr, val));
475	addr &= 1;
476	if (addr == 0) {
477	if (val & 0x10) {
478	/* init */
479	pic_reset(s);
480	/* deassert a pending interrupt */
481	pThis->CTX_SUFF(pPicHlp)->pfnClearInterruptFF(pThis->CTX_SUFF(pDevIns));
482
483	s->init_state = 1;
484	s->init4 = val & 1;
485	if (val & 0x02)
486	AssertReleaseMsgFailed(("single mode not supported"));
487	if (val & 0x08)
488	AssertReleaseMsgFailed(("level sensitive irq not supported"));
489	} else if (val & 0x08) {
490	if (val & 0x04)
491	s->poll = 1;
492	if (val & 0x02)
493	s->read_reg_select = val & 1;
494	if (val & 0x40)
495	s->special_mask = (val >> 5) & 1;
496	} else {
497	cmd = val >> 5;
498	switch(cmd) {
499	case 0:
500	case 4:
501	s->rotate_on_auto_eoi = cmd >> 2;
502	break;
503	case 1: /* end of interrupt */
504	case 5:
505	{
506	priority = get_priority(s, s->isr);
507	if (priority != 8) {
508	irq = (priority + s->priority_add) & 7;
509	Log(("pic_write: EOI prio=%d irq=%d\n", priority, irq));
510	s->isr &= ~(1 << irq);
511	if (cmd == 5)
512	s->priority_add = (irq + 1) & 7;
513	rc = pic_update_irq(pThis);
514	Assert(rc == VINF_SUCCESS);
515	DumpPICState(s, "eoi");
516	}
517	break;
518	}
519	case 3:
520	{
521	irq = val & 7;
522	Log(("pic_write: EOI2 for irq %d\n", irq));
523	s->isr &= ~(1 << irq);
524	rc = pic_update_irq(pThis);
525	Assert(rc == VINF_SUCCESS);
526	DumpPICState(s, "eoi2");
527	break;
528	}
529	case 6:
530	{
531	s->priority_add = (val + 1) & 7;
532	Log(("pic_write: lowest priority %d (highest %d)\n", val & 7, s->priority_add));
533	rc = pic_update_irq(pThis);
534	Assert(rc == VINF_SUCCESS);
535	break;
536	}
537	case 7:
538	{
539	irq = val & 7;
540	Log(("pic_write: EOI3 for irq %d\n", irq));
541	s->isr &= ~(1 << irq);
542	s->priority_add = (irq + 1) & 7;
543	rc = pic_update_irq(pThis);
544	Assert(rc == VINF_SUCCESS);
545	DumpPICState(s, "eoi3");
546	break;
547	}
548	default:
549	/* no operation */
550	break;
551	}
552	}
553	} else {
554	switch(s->init_state) {
555	case 0:
556	{
557	/* normal mode */
558	pic_update_imr(pThis, s, val);
559
560	rc = pic_update_irq(pThis);
561	Assert(rc == VINF_SUCCESS);
562	break;
563	}
564	case 1:
565	s->irq_base = val & 0xf8;
566	s->init_state = 2;
567	Log(("pic_write: set irq base to %x\n", s->irq_base));
568	break;
569	case 2:
570	if (s->init4) {
571	s->init_state = 3;
572	} else {
573	s->init_state = 0;
574	}
575	break;
576	case 3:
577	s->special_fully_nested_mode = (val >> 4) & 1;
578	s->auto_eoi = (val >> 1) & 1;
579	s->init_state = 0;
580	Log(("pic_write: special_fully_nested_mode=%d auto_eoi=%d\n", s->special_fully_nested_mode, s->auto_eoi));
581	break;
582	}
583	}
584	return rc;
585	}
586
587
588	static uint32_t pic_poll_read (PicState *s, uint32_t addr1)
589	{
590	PDEVPIC pThis = PDMINS_2_DATA(s->CTX_SUFF(pDevIns), PDEVPIC);
591	PicState *pics = &pThis->aPics[0];
592	int ret;
593
594	ret = pic_get_irq(s);
595	if (ret >= 0) {
596	if (addr1 >> 7) {
597	Log2(("pic_poll_read: clear slave irq (isr)\n"));
598	pics[0].isr &= ~(1 << 2);
599	pics[0].irr &= ~(1 << 2);
600	}
601	Log2(("pic_poll_read: clear irq %d (isr)\n", ret));
602	s->irr &= ~(1 << ret);
603	s->isr &= ~(1 << ret);
604	if (addr1 >> 7 \|\| ret != 2)
605	pic_update_irq(pThis);
606	} else {
607	ret = 0x07;
608	pic_update_irq(pThis);
609	}
610
611	return ret;
612	}
613
614
615	static uint32_t pic_ioport_read(void opaque, uint32_t addr1, int pRC)
616	{
617	PicState s = (PicState)opaque;
618	unsigned int addr;
619	int ret;
620
621	*pRC = VINF_SUCCESS;
622
623	addr = addr1;
624	addr &= 1;
625	if (s->poll) {
626	ret = pic_poll_read(s, addr1);
627	s->poll = 0;
628	} else {
629	if (addr == 0) {
630	if (s->read_reg_select)
631	ret = s->isr;
632	else
633	ret = s->irr;
634	} else {
635	ret = s->imr;
636	}
637	}
638	Log(("pic_read: addr=0x%02x val=0x%02x\n", addr1, ret));
639	return ret;
640	}
641
642
643
644	/* -=-=-=-=-=- wrappers / stuff -=-=-=-=-=- */
645
646	/**
647	* Port I/O Handler for IN operations.
648	*
649	* @returns VBox status code.
650	*
651	* @param pDevIns The device instance.
652	* @param pvUser User argument - pointer to the PIC in question.
653	* @param uPort Port number used for the IN operation.
654	* @param pu32 Where to store the result.
655	* @param cb Number of bytes read.
656	*/
657	PDMBOTHCBDECL(int) picIOPortRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
658	{
659	PDEVPIC pThis = PDMINS_2_DATA(pDevIns, PDEVPIC);
660	uint32_t iPic = (uint32_t)(uintptr_t)pvUser;
661
662	Assert(iPic == 0 \|\| iPic == 1);
663	if (cb == 1)
664	{
665	int rc;
666	PIC_LOCK(pThis, VINF_IOM_HC_IOPORT_READ);
667	*pu32 = pic_ioport_read(&pThis->aPics[iPic], Port, &rc);
668	PIC_UNLOCK(pThis);
669	return rc;
670	}
671	return VERR_IOM_IOPORT_UNUSED;
672	}
673
674	/**
675	* Port I/O Handler for OUT operations.
676	*
677	* @returns VBox status code.
678	*
679	* @param pDevIns The device instance.
680	* @param pvUser User argument - pointer to the PIC in question.
681	* @param uPort Port number used for the IN operation.
682	* @param u32 The value to output.
683	* @param cb The value size in bytes.
684	*/
685	PDMBOTHCBDECL(int) picIOPortWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
686	{
687	PDEVPIC pThis = PDMINS_2_DATA(pDevIns, PDEVPIC);
688	uint32_t iPic = (uint32_t)(uintptr_t)pvUser;
689
690	Assert(iPic == 0 \|\| iPic == 1);
691
692	if (cb == 1)
693	{
694	int rc;
695	PIC_LOCK(pThis, VINF_IOM_HC_IOPORT_WRITE);
696	rc = pic_ioport_write(&pThis->aPics[iPic], Port, u32);
697	PIC_UNLOCK(pThis);
698	return rc;
699	}
700	return VINF_SUCCESS;
701	}
702
703
704	/**
705	* Port I/O Handler for IN operations.
706	*
707	* @returns VBox status code.
708	*
709	* @param pDevIns The device instance.
710	* @param pvUser User argument - pointer to the PIC in question.
711	* @param uPort Port number used for the IN operation.
712	* @param pu32 Where to store the result.
713	* @param cb Number of bytes read.
714	*/
715	PDMBOTHCBDECL(int) picIOPortElcrRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
716	{
717	if (cb == 1)
718	{
719	PicState s = (PicState)pvUser;
720	PIC_LOCK(PDMINS_2_DATA(pDevIns, PDEVPIC), VINF_IOM_HC_IOPORT_READ);
721	*pu32 = s->elcr;
722	PIC_UNLOCK(PDMINS_2_DATA(pDevIns, PDEVPIC));
723	return VINF_SUCCESS;
724	}
725	return VERR_IOM_IOPORT_UNUSED;
726	}
727
728	/**
729	* Port I/O Handler for OUT operations.
730	*
731	* @returns VBox status code.
732	*
733	* @param pDevIns The device instance.
734	* @param pvUser User argument - pointer to the PIC in question.
735	* @param uPort Port number used for the IN operation.
736	* @param u32 The value to output.
737	* @param cb The value size in bytes.
738	*/
739	PDMBOTHCBDECL(int) picIOPortElcrWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
740	{
741	if (cb == 1)
742	{
743	PicState s = (PicState)pvUser;
744	PIC_LOCK(PDMINS_2_DATA(pDevIns, PDEVPIC), VINF_IOM_HC_IOPORT_WRITE);
745	s->elcr = u32 & s->elcr_mask;
746	PIC_UNLOCK(PDMINS_2_DATA(pDevIns, PDEVPIC));
747	}
748	return VINF_SUCCESS;
749	}
750
751
752	#ifdef IN_RING3
753
754	#ifdef DEBUG
755	/**
756	* PIC status info callback.
757	*
758	* @param pDevIns The device instance.
759	* @param pHlp The output helpers.
760	* @param pszArgs The arguments.
761	*/
762	static DECLCALLBACK(void) picInfo(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs)
763	{
764	PDEVPIC pThis = PDMINS_2_DATA(pDevIns, PDEVPIC);
765
766	/*
767	* Show info.
768	*/
769	for (int i=0;i<2;i++)
770	{
771	pHlp->pfnPrintf(pHlp, "PIC%d:\n", i);
772	pHlp->pfnPrintf(pHlp, " last_irr = %02x\n", pThis->aPics[i].last_irr);
773	pHlp->pfnPrintf(pHlp, " irr = %02x\n", pThis->aPics[i].irr);
774	pHlp->pfnPrintf(pHlp, " imr = %02x\n", pThis->aPics[i].imr);
775	pHlp->pfnPrintf(pHlp, " isr = %02x\n", pThis->aPics[i].isr);
776	pHlp->pfnPrintf(pHlp, " priority_add = %02x\n", pThis->aPics[i].priority_add);
777	pHlp->pfnPrintf(pHlp, " irq_base = %02x\n", pThis->aPics[i].irq_base);
778	pHlp->pfnPrintf(pHlp, " read_reg_select = %02x\n", pThis->aPics[i].read_reg_select);
779	pHlp->pfnPrintf(pHlp, " poll = %02x\n", pThis->aPics[i].poll);
780	pHlp->pfnPrintf(pHlp, " special_mask = %02x\n", pThis->aPics[i].special_mask);
781	pHlp->pfnPrintf(pHlp, " init_state = %02x\n", pThis->aPics[i].init_state);
782	pHlp->pfnPrintf(pHlp, " auto_eoi = %02x\n", pThis->aPics[i].auto_eoi);
783	pHlp->pfnPrintf(pHlp, " rotate_on_auto_eoi = %02x\n", pThis->aPics[i].rotate_on_auto_eoi);
784	pHlp->pfnPrintf(pHlp, " special_fully_nested_mode = %02x\n", pThis->aPics[i].special_fully_nested_mode);
785	pHlp->pfnPrintf(pHlp, " init4 = %02x\n", pThis->aPics[i].init4);
786	pHlp->pfnPrintf(pHlp, " elcr = %02x\n", pThis->aPics[i].elcr);
787	pHlp->pfnPrintf(pHlp, " elcr_mask = %02x\n", pThis->aPics[i].elcr_mask);
788	}
789	}
790	#endif /* DEBUG */
791
792	/**
793	* Saves a state of the programmable interrupt controller device.
794	*
795	* @returns VBox status code.
796	* @param pDevIns The device instance.
797	* @param pSSMHandle The handle to save the state to.
798	*/
799	static DECLCALLBACK(int) picSaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSMHandle)
800	{
801	PDEVPIC pThis = PDMINS_2_DATA(pDevIns, PDEVPIC);
802	for (unsigned i = 0; i < RT_ELEMENTS(pThis->aPics); i++)
803	{
804	SSMR3PutU8(pSSMHandle, pThis->aPics[i].last_irr);
805	SSMR3PutU8(pSSMHandle, pThis->aPics[i].irr);
806	SSMR3PutU8(pSSMHandle, pThis->aPics[i].imr);
807	SSMR3PutU8(pSSMHandle, pThis->aPics[i].isr);
808	SSMR3PutU8(pSSMHandle, pThis->aPics[i].priority_add);
809	SSMR3PutU8(pSSMHandle, pThis->aPics[i].irq_base);
810	SSMR3PutU8(pSSMHandle, pThis->aPics[i].read_reg_select);
811	SSMR3PutU8(pSSMHandle, pThis->aPics[i].poll);
812	SSMR3PutU8(pSSMHandle, pThis->aPics[i].special_mask);
813	SSMR3PutU8(pSSMHandle, pThis->aPics[i].init_state);
814	SSMR3PutU8(pSSMHandle, pThis->aPics[i].auto_eoi);
815	SSMR3PutU8(pSSMHandle, pThis->aPics[i].rotate_on_auto_eoi);
816	SSMR3PutU8(pSSMHandle, pThis->aPics[i].special_fully_nested_mode);
817	SSMR3PutU8(pSSMHandle, pThis->aPics[i].init4);
818	SSMR3PutU8(pSSMHandle, pThis->aPics[i].elcr);
819	}
820	return VINF_SUCCESS;
821	}
822
823
824	/**
825	* Loads a saved programmable interrupt controller device state.
826	*
827	* @returns VBox status code.
828	* @param pDevIns The device instance.
829	* @param pSSMHandle The handle to the saved state.
830	* @param u32Version The data unit version number.
831	*/
832	static DECLCALLBACK(int) picLoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSMHandle, uint32_t u32Version)
833	{
834	PDEVPIC pThis = PDMINS_2_DATA(pDevIns, PDEVPIC);
835
836	if (u32Version != 1)
837	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
838
839	for (unsigned i = 0; i < RT_ELEMENTS(pThis->aPics); i++)
840	{
841	SSMR3GetU8(pSSMHandle, &pThis->aPics[i].last_irr);
842	SSMR3GetU8(pSSMHandle, &pThis->aPics[i].irr);
843	SSMR3GetU8(pSSMHandle, &pThis->aPics[i].imr);
844	SSMR3GetU8(pSSMHandle, &pThis->aPics[i].isr);
845	SSMR3GetU8(pSSMHandle, &pThis->aPics[i].priority_add);
846	SSMR3GetU8(pSSMHandle, &pThis->aPics[i].irq_base);
847	SSMR3GetU8(pSSMHandle, &pThis->aPics[i].read_reg_select);
848	SSMR3GetU8(pSSMHandle, &pThis->aPics[i].poll);
849	SSMR3GetU8(pSSMHandle, &pThis->aPics[i].special_mask);
850	SSMR3GetU8(pSSMHandle, &pThis->aPics[i].init_state);
851	SSMR3GetU8(pSSMHandle, &pThis->aPics[i].auto_eoi);
852	SSMR3GetU8(pSSMHandle, &pThis->aPics[i].rotate_on_auto_eoi);
853	SSMR3GetU8(pSSMHandle, &pThis->aPics[i].special_fully_nested_mode);
854	SSMR3GetU8(pSSMHandle, &pThis->aPics[i].init4);
855	SSMR3GetU8(pSSMHandle, &pThis->aPics[i].elcr);
856	}
857	return VINF_SUCCESS;
858	}
859
860
861	/* -=-=-=-=-=- real code -=-=-=-=-=- */
862
863	/**
864	* Reset notification.
865	*
866	* @returns VBox status.
867	* @param pDevIns The device instance data.
868	*/
869	static DECLCALLBACK(void) picReset(PPDMDEVINS pDevIns)
870	{
871	PDEVPIC pThis = PDMINS_2_DATA(pDevIns, PDEVPIC);
872	unsigned i;
873	LogFlow(("picReset:\n"));
874	pThis->pPicHlpR3->pfnLock(pDevIns, VERR_INTERNAL_ERROR);
875
876	for (i = 0; i < RT_ELEMENTS(pThis->aPics); i++)
877	pic_reset(&pThis->aPics[i]);
878
879	PIC_UNLOCK(pThis);
880	}
881
882
883	/**
884	* @copydoc FNPDMDEVRELOCATE
885	*/
886	static DECLCALLBACK(void) picRelocate(PPDMDEVINS pDevIns, RTGCINTPTR offDelta)
887	{
888	PDEVPIC pThis = PDMINS_2_DATA(pDevIns, PDEVPIC);
889	unsigned i;
890
891	pThis->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
892	pThis->pPicHlpRC = pThis->pPicHlpR3->pfnGetRCHelpers(pDevIns);
893	for (i = 0; i < RT_ELEMENTS(pThis->aPics); i++)
894	pThis->aPics[i].pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
895	}
896
897
898	/**
899	* @copydoc FNPDMDEVCONSTRUCT
900	*/
901	static DECLCALLBACK(int) picConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfgHandle)
902	{
903	PDEVPIC pThis = PDMINS_2_DATA(pDevIns, PDEVPIC);
904	PDMPICREG PicReg;
905	int rc;
906	bool fGCEnabled;
907	bool fR0Enabled;
908	Assert(iInstance == 0);
909
910	/*
911	* Validate and read configuration.
912	*/
913	if (!CFGMR3AreValuesValid(pCfgHandle, "GCEnabled\0" "R0Enabled\0"))
914	return VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
915
916	rc = CFGMR3QueryBoolDef(pCfgHandle, "GCEnabled", &fGCEnabled, true);
917	if (RT_FAILURE(rc))
918	return PDMDEV_SET_ERROR(pDevIns, rc,
919	N_("Configuration error: failed to read GCEnabled as boolean"));
920
921	rc = CFGMR3QueryBoolDef(pCfgHandle, "R0Enabled", &fR0Enabled, true);
922	if (RT_FAILURE(rc))
923	return PDMDEV_SET_ERROR(pDevIns, rc,
924	N_("Configuration error: failed to read R0Enabled as boolean"));
925
926	Log(("DevPIC: fGCEnabled=%RTbool fR0Enabled=%RTbool\n", fGCEnabled, fR0Enabled));
927
928	/*
929	* Init the data.
930	*/
931	Assert(RT_ELEMENTS(pThis->aPics) == 2);
932	pThis->pDevInsR3 = pDevIns;
933	pThis->pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
934	pThis->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
935	pThis->aPics[0].elcr_mask = 0xf8;
936	pThis->aPics[1].elcr_mask = 0xde;
937	pThis->aPics[0].pDevInsR3 = pDevIns;
938	pThis->aPics[1].pDevInsR3 = pDevIns;
939	pThis->aPics[0].pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
940	pThis->aPics[1].pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
941	pThis->aPics[0].pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
942	pThis->aPics[1].pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
943
944	/*
945	* Register us as the PIC with PDM.
946	*/
947	PicReg.u32Version = PDM_PICREG_VERSION;
948	PicReg.pfnSetIrqR3 = picSetIrq;
949	PicReg.pfnGetInterruptR3 = picGetInterrupt;
950
951	if (fGCEnabled)
952	{
953	PicReg.pszSetIrqRC = "picSetIrq";
954	PicReg.pszGetInterruptRC = "picGetInterrupt";
955	}
956	else
957	{
958	PicReg.pszSetIrqRC = NULL;
959	PicReg.pszGetInterruptRC = NULL;
960	}
961
962	if (fR0Enabled)
963	{
964	PicReg.pszSetIrqR0 = "picSetIrq";
965	PicReg.pszGetInterruptR0 = "picGetInterrupt";
966	}
967	else
968	{
969	PicReg.pszSetIrqR0 = NULL;
970	PicReg.pszGetInterruptR0 = NULL;
971	}
972
973	Assert(pDevIns->pDevHlp->pfnPICRegister);
974	rc = pDevIns->pDevHlp->pfnPICRegister(pDevIns, &PicReg, &pThis->pPicHlpR3);
975	AssertLogRelMsgRCReturn(rc, ("PICRegister -> %Vrc\n", rc), rc);
976	if (fGCEnabled)
977	pThis->pPicHlpRC = pThis->pPicHlpR3->pfnGetRCHelpers(pDevIns);
978	if (fR0Enabled)
979	pThis->pPicHlpR0 = pThis->pPicHlpR3->pfnGetR0Helpers(pDevIns);
980
981
982	/*
983	* Register I/O ports and save state.
984	*/
985	rc = PDMDevHlpIOPortRegister(pDevIns, 0x20, 2, (void *)0, picIOPortWrite, picIOPortRead, NULL, NULL, "i8259 PIC #0");
986	if (RT_FAILURE(rc))
987	return rc;
988	rc = PDMDevHlpIOPortRegister(pDevIns, 0xa0, 2, (void *)1, picIOPortWrite, picIOPortRead, NULL, NULL, "i8259 PIC #1");
989	if (RT_FAILURE(rc))
990	return rc;
991	if (fGCEnabled)
992	{
993	rc = PDMDevHlpIOPortRegisterGC(pDevIns, 0x20, 2, 0, "picIOPortWrite", "picIOPortRead", NULL, NULL, "i8259 PIC #0");
994	if (RT_FAILURE(rc))
995	return rc;
996	rc = PDMDevHlpIOPortRegisterGC(pDevIns, 0xa0, 2, 1, "picIOPortWrite", "picIOPortRead", NULL, NULL, "i8259 PIC #1");
997	if (RT_FAILURE(rc))
998	return rc;
999	}
1000	if (fR0Enabled)
1001	{
1002	rc = PDMDevHlpIOPortRegisterR0(pDevIns, 0x20, 2, 0, "picIOPortWrite", "picIOPortRead", NULL, NULL, "i8259 PIC #0");
1003	if (RT_FAILURE(rc))
1004	return rc;
1005	rc = PDMDevHlpIOPortRegisterR0(pDevIns, 0xa0, 2, 1, "picIOPortWrite", "picIOPortRead", NULL, NULL, "i8259 PIC #1");
1006	if (RT_FAILURE(rc))
1007	return rc;
1008	}
1009
1010	rc = PDMDevHlpIOPortRegister(pDevIns, 0x4d0, 1, &pThis->aPics[0],
1011	picIOPortElcrWrite, picIOPortElcrRead, NULL, NULL, "i8259 PIC #0 - elcr");
1012	if (RT_FAILURE(rc))
1013	return rc;
1014	rc = PDMDevHlpIOPortRegister(pDevIns, 0x4d1, 1, &pThis->aPics[1],
1015	picIOPortElcrWrite, picIOPortElcrRead, NULL, NULL, "i8259 PIC #1 - elcr");
1016	if (RT_FAILURE(rc))
1017	return rc;
1018	if (fGCEnabled)
1019	{
1020	RTRCPTR pDataRC = PDMINS_2_DATA_RCPTR(pDevIns);
1021	rc = PDMDevHlpIOPortRegisterGC(pDevIns, 0x4d0, 1, pDataRC + RT_OFFSETOF(DEVPIC, aPics[0]),
1022	"picIOPortElcrWrite", "picIOPortElcrRead", NULL, NULL, "i8259 PIC #0 - elcr");
1023	if (RT_FAILURE(rc))
1024	return rc;
1025	rc = PDMDevHlpIOPortRegisterGC(pDevIns, 0x4d1, 1, pDataRC + RT_OFFSETOF(DEVPIC, aPics[1]),
1026	"picIOPortElcrWrite", "picIOPortElcrRead", NULL, NULL, "i8259 PIC #1 - elcr");
1027	if (RT_FAILURE(rc))
1028	return rc;
1029	}
1030	if (fR0Enabled)
1031	{
1032	RTR0PTR pDataR0 = PDMINS_2_DATA_R0PTR(pDevIns);
1033	rc = PDMDevHlpIOPortRegisterR0(pDevIns, 0x4d0, 1, pDataR0 + RT_OFFSETOF(DEVPIC, aPics[0]),
1034	"picIOPortElcrWrite", "picIOPortElcrRead", NULL, NULL, "i8259 PIC #0 - elcr");
1035	if (RT_FAILURE(rc))
1036	return rc;
1037	rc = PDMDevHlpIOPortRegisterR0(pDevIns, 0x4d1, 1, pDataR0 + RT_OFFSETOF(DEVPIC, aPics[1]),
1038	"picIOPortElcrWrite", "picIOPortElcrRead", NULL, NULL, "i8259 PIC #1 - elcr");
1039	if (RT_FAILURE(rc))
1040	return rc;
1041	}
1042
1043	rc = PDMDevHlpSSMRegister(pDevIns, pDevIns->pDevReg->szDeviceName, iInstance, 1 /* version /, sizeof(pThis),
1044	NULL, picSaveExec, NULL,
1045	NULL, picLoadExec, NULL);
1046	if (RT_FAILURE(rc))
1047	return rc;
1048
1049
1050	#ifdef DEBUG
1051	/*
1052	* Register the info item.
1053	*/
1054	PDMDevHlpDBGFInfoRegister(pDevIns, "pic", "PIC info.", picInfo);
1055	#endif
1056
1057	/*
1058	* Initialize the device state.
1059	*/
1060	picReset(pDevIns);
1061
1062	#ifdef VBOX_WITH_STATISTICS
1063	/*
1064	* Statistics.
1065	*/
1066	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatSetIrqGC, STAMTYPE_COUNTER, "/PDM/PIC/SetIrqGC", STAMUNIT_OCCURENCES, "Number of PIC SetIrq calls in GC.");
1067	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatSetIrqHC, STAMTYPE_COUNTER, "/PDM/PIC/SetIrqHC", STAMUNIT_OCCURENCES, "Number of PIC SetIrq calls in HC.");
1068
1069	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatClearedActiveIRQ2, STAMTYPE_COUNTER, "/PDM/PIC/Masked/ActiveIRQ2", STAMUNIT_OCCURENCES, "Number of cleared irq 2.");
1070	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatClearedActiveMasterIRQ, STAMTYPE_COUNTER, "/PDM/PIC/Masked/ActiveMaster", STAMUNIT_OCCURENCES, "Number of cleared master irqs.");
1071	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatClearedActiveSlaveIRQ, STAMTYPE_COUNTER, "/PDM/PIC/Masked/ActiveSlave", STAMUNIT_OCCURENCES, "Number of cleared slave irqs.");
1072	#endif
1073
1074	return VINF_SUCCESS;
1075	}
1076
1077
1078	/**
1079	* The device registration structure.
1080	*/
1081	const PDMDEVREG g_DeviceI8259 =
1082	{
1083	/* u32Version */
1084	PDM_DEVREG_VERSION,
1085	/* szDeviceName */
1086	"i8259",
1087	/* szGCMod */
1088	"VBoxDDGC.gc",
1089	/* szR0Mod */
1090	"VBoxDDR0.r0",
1091	/* pszDescription */
1092	"Intel 8259 Programmable Interrupt Controller (PIC) Device.",
1093	/* fFlags */
1094	PDM_DEVREG_FLAGS_HOST_BITS_DEFAULT \| PDM_DEVREG_FLAGS_GUEST_BITS_32_64 \| PDM_DEVREG_FLAGS_PAE36 \| PDM_DEVREG_FLAGS_GC \| PDM_DEVREG_FLAGS_R0,
1095	/* fClass */
1096	PDM_DEVREG_CLASS_PIC,
1097	/* cMaxInstances */
1098	1,
1099	/* cbInstance */
1100	sizeof(DEVPIC),
1101	/* pfnConstruct */
1102	picConstruct,
1103	/* pfnDestruct */
1104	NULL,
1105	/* pfnRelocate */
1106	picRelocate,
1107	/* pfnIOCtl */
1108	NULL,
1109	/* pfnPowerOn */
1110	NULL,
1111	/* pfnReset */
1112	picReset,
1113	/* pfnSuspend */
1114	NULL,
1115	/* pfnResume */
1116	NULL,
1117	/* pfnAttach */
1118	NULL,
1119	/* pfnDetach */
1120	NULL,
1121	/* pfnQueryInterface. */
1122	NULL
1123	};
1124
1125	#endif /* IN_RING3 */
1126	#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */
1127

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source: vbox/trunk/src/VBox/Devices/PC/DevPIC.cpp@ 11280

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