IOMAll.cpp@ 10072

Last change on this file since 10072 was 9774, checked in by vboxsync, 16 years ago
IOM updates for 64 bits mode.
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 31.6 KB

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1	/* $Id: IOMAll.cpp 9774 2008-06-17 14:55:50Z vboxsync $ */
2	/** @file
3	* IOM - Input / Output Monitor - Any Context.
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_IOM
26	#include <VBox/iom.h>
27	#include <VBox/mm.h>
28	#include <VBox/param.h>
29	#include "IOMInternal.h"
30	#include <VBox/vm.h>
31	#include <VBox/selm.h>
32	#include <VBox/trpm.h>
33	#include <VBox/pgm.h>
34	#include <VBox/cpum.h>
35	#include <VBox/err.h>
36	#include <VBox/log.h>
37	#include <iprt/assert.h>
38
39
40	/**
41	* Calculates the size of register parameter.
42	*
43	* @returns 1, 2, 4 on success.
44	* @returns 0 if non-register parameter.
45	* @param pCpu Pointer to current disassembler context.
46	* @param pParam Pointer to parameter of instruction to proccess.
47	*/
48	static unsigned iomGetRegSize(PDISCPUSTATE pCpu, PCOP_PARAMETER pParam)
49	{
50	if (pParam->flags & (USE_BASE \| USE_INDEX \| USE_SCALE \| USE_DISPLACEMENT8 \| USE_DISPLACEMENT16 \| USE_DISPLACEMENT32 \| USE_IMMEDIATE8 \| USE_IMMEDIATE16 \| USE_IMMEDIATE32 \| USE_IMMEDIATE16_SX8 \| USE_IMMEDIATE32_SX8))
51	return 0;
52
53	if (pParam->flags & USE_REG_GEN32)
54	return 4;
55
56	if (pParam->flags & USE_REG_GEN16)
57	return 2;
58
59	if (pParam->flags & USE_REG_GEN8)
60	return 1;
61
62	if (pParam->flags & USE_REG_GEN64)
63	return 8;
64
65	if (pParam->flags & USE_REG_SEG)
66	return 2;
67	return 0;
68	}
69
70
71	/**
72	* Returns the contents of register or immediate data of instruction's parameter.
73	*
74	* @returns true on success.
75	*
76	* @param pCpu Pointer to current disassembler context.
77	* @param pParam Pointer to parameter of instruction to proccess.
78	* @param pRegFrame Pointer to CPUMCTXCORE guest structure.
79	* @param pu64Data Where to store retrieved data.
80	* @param pcbSize Where to store the size of data (1, 2, 4, 8).
81	*/
82	bool iomGetRegImmData(PDISCPUSTATE pCpu, PCOP_PARAMETER pParam, PCPUMCTXCORE pRegFrame, uint64_t pu64Data, unsigned pcbSize)
83	{
84	if (pParam->flags & (USE_BASE \| USE_INDEX \| USE_SCALE \| USE_DISPLACEMENT8 \| USE_DISPLACEMENT16 \| USE_DISPLACEMENT32))
85	{
86	*pcbSize = 0;
87	*pu64Data = 0;
88	return false;
89	}
90
91	if (pParam->flags & USE_REG_GEN32)
92	{
93	*pcbSize = 4;
94	DISFetchReg32(pRegFrame, pParam->base.reg_gen, (uint32_t *)pu64Data);
95	return true;
96	}
97
98	if (pParam->flags & USE_REG_GEN16)
99	{
100	*pcbSize = 2;
101	DISFetchReg16(pRegFrame, pParam->base.reg_gen, (uint16_t *)pu64Data);
102	return true;
103	}
104
105	if (pParam->flags & USE_REG_GEN8)
106	{
107	*pcbSize = 1;
108	DISFetchReg8(pRegFrame, pParam->base.reg_gen, (uint8_t *)pu64Data);
109	return true;
110	}
111
112	if (pParam->flags & USE_REG_GEN64)
113	{
114	*pcbSize = 8;
115	DISFetchReg64(pRegFrame, pParam->base.reg_gen, pu64Data);
116	return true;
117	}
118
119	if (pParam->flags & (USE_IMMEDIATE64))
120	{
121	*pcbSize = 8;
122	*pu64Data = pParam->parval;
123	return true;
124	}
125
126	if (pParam->flags & (USE_IMMEDIATE32\|USE_IMMEDIATE32_SX8))
127	{
128	*pcbSize = 4;
129	*pu64Data = (uint32_t)pParam->parval;
130	return true;
131	}
132
133	if (pParam->flags & (USE_IMMEDIATE16\|USE_IMMEDIATE16_SX8))
134	{
135	*pcbSize = 2;
136	*pu64Data = (uint16_t)pParam->parval;
137	return true;
138	}
139
140	if (pParam->flags & USE_IMMEDIATE8)
141	{
142	*pcbSize = 1;
143	*pu64Data = (uint8_t)pParam->parval;
144	return true;
145	}
146
147	if (pParam->flags & USE_REG_SEG)
148	{
149	*pcbSize = 2;
150	DISFetchRegSeg(pRegFrame, pParam->base.reg_seg, (RTSEL *)pu64Data);
151	return true;
152	} /* Else - error. */
153
154	AssertFailed();
155	*pcbSize = 0;
156	*pu64Data = 0;
157	return false;
158	}
159
160
161	/**
162	* Saves data to 8/16/32 general purpose or segment register defined by
163	* instruction's parameter.
164	*
165	* @returns true on success.
166	* @param pCpu Pointer to current disassembler context.
167	* @param pParam Pointer to parameter of instruction to proccess.
168	* @param pRegFrame Pointer to CPUMCTXCORE guest structure.
169	* @param u64Data 8/16/32/64 bit data to store.
170	*/
171	bool iomSaveDataToReg(PDISCPUSTATE pCpu, PCOP_PARAMETER pParam, PCPUMCTXCORE pRegFrame, uint64_t u64Data)
172	{
173	if (pParam->flags & (USE_BASE \| USE_INDEX \| USE_SCALE \| USE_DISPLACEMENT8 \| USE_DISPLACEMENT16 \| USE_DISPLACEMENT32 \| USE_DISPLACEMENT64 \| USE_IMMEDIATE8 \| USE_IMMEDIATE16 \| USE_IMMEDIATE32 \| USE_IMMEDIATE32_SX8 \| USE_IMMEDIATE16_SX8))
174	{
175	return false;
176	}
177
178	if (pParam->flags & USE_REG_GEN32)
179	{
180	DISWriteReg32(pRegFrame, pParam->base.reg_gen, (uint32_t)u64Data);
181	return true;
182	}
183
184	if (pParam->flags & USE_REG_GEN64)
185	{
186	DISWriteReg64(pRegFrame, pParam->base.reg_gen, u64Data);
187	return true;
188	}
189
190	if (pParam->flags & USE_REG_GEN16)
191	{
192	DISWriteReg16(pRegFrame, pParam->base.reg_gen, (uint16_t)u64Data);
193	return true;
194	}
195
196	if (pParam->flags & USE_REG_GEN8)
197	{
198	DISWriteReg8(pRegFrame, pParam->base.reg_gen, (uint8_t)u64Data);
199	return true;
200	}
201
202	if (pParam->flags & USE_REG_SEG)
203	{
204	DISWriteRegSeg(pRegFrame, pParam->base.reg_seg, (RTSEL)u64Data);
205	return true;
206	}
207
208	/* Else - error. */
209	return false;
210	}
211
212	/*
213	* Internal - statistics only.
214	*/
215	DECLINLINE(void) iomMMIOStatLength(PVM pVM, unsigned cb)
216	{
217	#ifdef VBOX_WITH_STATISTICS
218	switch (cb)
219	{
220	case 1:
221	STAM_COUNTER_INC(&pVM->iom.s.StatGCMMIO1Byte);
222	break;
223	case 2:
224	STAM_COUNTER_INC(&pVM->iom.s.StatGCMMIO2Bytes);
225	break;
226	case 4:
227	STAM_COUNTER_INC(&pVM->iom.s.StatGCMMIO4Bytes);
228	break;
229	default:
230	/* No way. */
231	AssertMsgFailed(("Invalid data length %d\n", cb));
232	break;
233	}
234	#else
235	NOREF(pVM); NOREF(cb);
236	#endif
237	}
238
239
240	//#undef LOG_GROUP
241	//#define LOG_GROUP LOG_GROUP_IOM_IOPORT
242
243	/**
244	* Reads an I/O port register.
245	*
246	* @returns Strict VBox status code. Informational status codes other than the one documented
247	* here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
248	* @retval VINF_SUCCESS Success.
249	* @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
250	* status code must be passed on to EM.
251	* @retval VINF_IOM_HC_IOPORT_READ Defer the read to ring-3. (R0/GC only)
252	*
253	* @param pVM VM handle.
254	* @param Port The port to read.
255	* @param pu32Value Where to store the value read.
256	* @param cbValue The size of the register to read in bytes. 1, 2 or 4 bytes.
257	*/
258	IOMDECL(int) IOMIOPortRead(PVM pVM, RTIOPORT Port, uint32_t *pu32Value, size_t cbValue)
259	{
260	#ifdef VBOX_WITH_STATISTICS
261	/*
262	* Get the statistics record.
263	*/
264	PIOMIOPORTSTATS pStats = CTXALLSUFF(pVM->iom.s.pStatsLastRead);
265	if (!pStats \|\| pStats->Core.Key != Port)
266	{
267	pStats = (PIOMIOPORTSTATS)RTAvloIOPortGet(&pVM->iom.s.CTXSUFF(pTrees)->IOPortStatTree, Port);
268	if (pStats)
269	CTXALLSUFF(pVM->iom.s.pStatsLastRead) = pStats;
270	}
271	#endif
272
273	/*
274	* Get handler for current context.
275	*/
276	CTXALLSUFF(PIOMIOPORTRANGE) pRange = CTXALLSUFF(pVM->iom.s.pRangeLastRead);
277	if ( !pRange
278	\|\| (unsigned)Port - (unsigned)pRange->Port >= (unsigned)pRange->cPorts)
279	{
280	pRange = iomIOPortGetRange(&pVM->iom.s, Port);
281	if (pRange)
282	CTXALLSUFF(pVM->iom.s.pRangeLastRead) = pRange;
283	}
284	#ifdef IN_GC
285	AssertMsg(!pRange \|\| MMHyperIsInsideArea(pVM, (RTGCPTR)(RTRCUINTPTR)pRange), ("pRange = %VGv\n", pRange)); /** @todo r=bird: there is a macro for this which skips the #if'ing. */
286	#endif
287
288	if (pRange)
289	{
290	/*
291	* Found a range.
292	*/
293	#ifndef IN_RING3
294	if (!pRange->pfnInCallback)
295	{
296	# ifdef VBOX_WITH_STATISTICS
297	if (pStats)
298	STAM_COUNTER_INC(&pStats->CTXALLMID(In,ToR3));
299	# endif
300	return VINF_IOM_HC_IOPORT_READ;
301	}
302	#endif
303	/* call the device. */
304	#ifdef VBOX_WITH_STATISTICS
305	if (pStats)
306	STAM_PROFILE_ADV_START(&pStats->CTXALLSUFF(ProfIn), a);
307	#endif
308	int rc = pRange->pfnInCallback(pRange->pDevIns, pRange->pvUser, Port, pu32Value, cbValue);
309	#ifdef VBOX_WITH_STATISTICS
310	if (pStats)
311	STAM_PROFILE_ADV_STOP(&pStats->CTXALLSUFF(ProfIn), a);
312	if (rc == VINF_SUCCESS && pStats)
313	STAM_COUNTER_INC(&pStats->CTXALLSUFF(In));
314	# ifndef IN_RING3
315	else if (rc == VINF_IOM_HC_IOPORT_READ && pStats)
316	STAM_COUNTER_INC(&pStats->CTXALLMID(In,ToR3));
317	# endif
318	#endif
319	if (rc == VERR_IOM_IOPORT_UNUSED)
320	{
321	/* make return value */
322	rc = VINF_SUCCESS;
323	switch (cbValue)
324	{
325	case 1: (uint8_t )pu32Value = 0xff; break;
326	case 2: (uint16_t )pu32Value = 0xffff; break;
327	case 4: (uint32_t )pu32Value = 0xffffffff; break;
328	default:
329	AssertMsgFailed(("Invalid I/O port size %d. Port=%d\n", cbValue, Port));
330	return VERR_IOM_INVALID_IOPORT_SIZE;
331	}
332	}
333	Log3(("IOMIOPortRead: Port=%RTiop pu32=%08RX32 cb=%d rc=%Vrc\n", Port, pu32Value, cbValue, rc));
334	return rc;
335	}
336
337	#ifndef IN_RING3
338	/*
339	* Handler in ring-3?
340	*/
341	PIOMIOPORTRANGER3 pRangeR3 = iomIOPortGetRangeHC(&pVM->iom.s, Port);
342	if (pRangeR3)
343	{
344	# ifdef VBOX_WITH_STATISTICS
345	if (pStats)
346	STAM_COUNTER_INC(&pStats->CTXALLMID(In,ToR3));
347	# endif
348	return VINF_IOM_HC_IOPORT_READ;
349	}
350	#endif
351
352	/*
353	* Ok, no handler for this port.
354	*/
355	#ifdef VBOX_WITH_STATISTICS
356	if (pStats)
357	STAM_COUNTER_INC(&pStats->CTXALLSUFF(In));
358	else
359	{
360	# ifndef IN_RING3
361	/* Ring-3 will have to create the statistics record. */
362	return VINF_IOM_HC_IOPORT_READ;
363	# else
364	pStats = iomr3IOPortStatsCreate(pVM, Port, NULL);
365	if (pStats)
366	STAM_COUNTER_INC(&pStats->CTXALLSUFF(In));
367	# endif
368	}
369	#endif
370
371	/* make return value */
372	switch (cbValue)
373	{
374	case 1: (uint8_t )pu32Value = 0xff; break;
375	case 2: (uint16_t )pu32Value = 0xffff; break;
376	case 4: (uint32_t )pu32Value = 0xffffffff; break;
377	default:
378	AssertMsgFailed(("Invalid I/O port size %d. Port=%d\n", cbValue, Port));
379	return VERR_IOM_INVALID_IOPORT_SIZE;
380	}
381	Log3(("IOMIOPortRead: Port=%RTiop pu32=%08RX32 cb=%d rc=VINF_SUCCESS\n", Port, pu32Value, cbValue));
382	return VINF_SUCCESS;
383	}
384
385
386	/**
387	* Reads the string buffer of an I/O port register.
388	*
389	* @returns Strict VBox status code. Informational status codes other than the one documented
390	* here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
391	* @retval VINF_SUCCESS Success.
392	* @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
393	* status code must be passed on to EM.
394	* @retval VINF_IOM_HC_IOPORT_READ Defer the read to ring-3. (R0/GC only)
395	*
396	* @param pVM VM handle.
397	* @param Port The port to read.
398	* @param pGCPtrDst Pointer to the destination buffer (GC, incremented appropriately).
399	* @param pcTransfers Pointer to the number of transfer units to read, on return remaining transfer units.
400	* @param cb Size of the transfer unit (1, 2 or 4 bytes).
401	* */
402	IOMDECL(int) IOMIOPortReadString(PVM pVM, RTIOPORT Port, PRTGCPTR pGCPtrDst, PRTGCUINTREG pcTransfers, unsigned cb)
403	{
404	#ifdef LOG_ENABLED
405	const RTGCUINTREG cTransfers = *pcTransfers;
406	#endif
407	#ifdef VBOX_WITH_STATISTICS
408	/*
409	* Get the statistics record.
410	*/
411	PIOMIOPORTSTATS pStats = CTXALLSUFF(pVM->iom.s.pStatsLastRead);
412	if (!pStats \|\| pStats->Core.Key != Port)
413	{
414	pStats = (PIOMIOPORTSTATS)RTAvloIOPortGet(&pVM->iom.s.CTXSUFF(pTrees)->IOPortStatTree, Port);
415	if (pStats)
416	CTXALLSUFF(pVM->iom.s.pStatsLastRead) = pStats;
417	}
418	#endif
419
420	/*
421	* Get handler for current context.
422	*/
423	CTXALLSUFF(PIOMIOPORTRANGE) pRange = CTXALLSUFF(pVM->iom.s.pRangeLastRead);
424	if ( !pRange
425	\|\| (unsigned)Port - (unsigned)pRange->Port >= (unsigned)pRange->cPorts)
426	{
427	pRange = iomIOPortGetRange(&pVM->iom.s, Port);
428	if (pRange)
429	CTXALLSUFF(pVM->iom.s.pRangeLastRead) = pRange;
430	}
431	#ifdef IN_GC
432	Assert(!pRange \|\| MMHyperIsInsideArea(pVM, (RTGCPTR)(RTRCUINTPTR)pRange)); /** @todo r=bird: there is a macro for this which skips the #if'ing. */
433	#endif
434
435	if (pRange)
436	{
437	/*
438	* Found a range.
439	*/
440	#ifndef IN_RING3
441	if (!pRange->pfnInStrCallback)
442	{
443	# ifdef VBOX_WITH_STATISTICS
444	if (pStats)
445	STAM_COUNTER_INC(&pStats->CTXALLMID(In,ToR3));
446	# endif
447	return VINF_IOM_HC_IOPORT_READ;
448	}
449	#endif
450	/* call the device. */
451	#ifdef VBOX_WITH_STATISTICS
452	if (pStats)
453	STAM_PROFILE_ADV_START(&pStats->CTXALLSUFF(ProfIn), a);
454	#endif
455
456	int rc = pRange->pfnInStrCallback(pRange->pDevIns, pRange->pvUser, Port, pGCPtrDst, pcTransfers, cb);
457	#ifdef VBOX_WITH_STATISTICS
458	if (pStats)
459	STAM_PROFILE_ADV_STOP(&pStats->CTXALLSUFF(ProfIn), a);
460	if (rc == VINF_SUCCESS && pStats)
461	STAM_COUNTER_INC(&pStats->CTXALLSUFF(In));
462	# ifndef IN_RING3
463	else if (rc == VINF_IOM_HC_IOPORT_READ && pStats)
464	STAM_COUNTER_INC(&pStats->CTXALLMID(In, ToR3));
465	# endif
466	#endif
467	Log3(("IOMIOPortReadStr: Port=%RTiop pGCPtrDst=%p pcTransfer=%p:{%#x->%#x} cb=%d rc=%Vrc\n",
468	Port, pGCPtrDst, pcTransfers, cTransfers, *pcTransfers, cb, rc));
469	return rc;
470	}
471
472	#ifndef IN_RING3
473	/*
474	* Handler in ring-3?
475	*/
476	PIOMIOPORTRANGER3 pRangeR3 = iomIOPortGetRangeHC(&pVM->iom.s, Port);
477	if (pRangeR3)
478	{
479	# ifdef VBOX_WITH_STATISTICS
480	if (pStats)
481	STAM_COUNTER_INC(&pStats->CTXALLMID(In,ToR3));
482	# endif
483	return VINF_IOM_HC_IOPORT_READ;
484	}
485	#endif
486
487	/*
488	* Ok, no handler for this port.
489	*/
490	#ifdef VBOX_WITH_STATISTICS
491	if (pStats)
492	STAM_COUNTER_INC(&pStats->CTXALLSUFF(In));
493	else
494	{
495	# ifndef IN_RING3
496	/* Ring-3 will have to create the statistics record. */
497	return VINF_IOM_HC_IOPORT_READ;
498	# else
499	pStats = iomr3IOPortStatsCreate(pVM, Port, NULL);
500	if (pStats)
501	STAM_COUNTER_INC(&pStats->CTXALLSUFF(In));
502	# endif
503	}
504	#endif
505
506	Log3(("IOMIOPortReadStr: Port=%RTiop pGCPtrDst=%p pcTransfer=%p:{%#x->%#x} cb=%d rc=VINF_SUCCESS\n",
507	Port, pGCPtrDst, pcTransfers, cTransfers, *pcTransfers, cb));
508	return VINF_SUCCESS;
509	}
510
511
512	/**
513	* Writes to an I/O port register.
514	*
515	* @returns Strict VBox status code. Informational status codes other than the one documented
516	* here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
517	* @retval VINF_SUCCESS Success.
518	* @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
519	* status code must be passed on to EM.
520	* @retval VINF_IOM_HC_IOPORT_WRITE Defer the write to ring-3. (R0/GC only)
521	*
522	* @param pVM VM handle.
523	* @param Port The port to write to.
524	* @param u32Value The value to write.
525	* @param cbValue The size of the register to read in bytes. 1, 2 or 4 bytes.
526	*/
527	IOMDECL(int) IOMIOPortWrite(PVM pVM, RTIOPORT Port, uint32_t u32Value, size_t cbValue)
528	{
529	/** @todo bird: When I get time, I'll remove the GC tree and link the GC entries to the ring-3 node. */
530	#ifdef VBOX_WITH_STATISTICS
531	/*
532	* Find the statistics record.
533	*/
534	PIOMIOPORTSTATS pStats = CTXALLSUFF(pVM->iom.s.pStatsLastWrite);
535	if (!pStats \|\| pStats->Core.Key != Port)
536	{
537	pStats = (PIOMIOPORTSTATS)RTAvloIOPortGet(&pVM->iom.s.CTXSUFF(pTrees)->IOPortStatTree, Port);
538	if (pStats)
539	CTXALLSUFF(pVM->iom.s.pStatsLastWrite) = pStats;
540	}
541	#endif
542
543	/*
544	* Get handler for current context.
545	*/
546	CTXALLSUFF(PIOMIOPORTRANGE) pRange = CTXALLSUFF(pVM->iom.s.pRangeLastWrite);
547	if ( !pRange
548	\|\| (unsigned)Port - (unsigned)pRange->Port >= (unsigned)pRange->cPorts)
549	{
550	pRange = iomIOPortGetRange(&pVM->iom.s, Port);
551	if (pRange)
552	CTXALLSUFF(pVM->iom.s.pRangeLastWrite) = pRange;
553	}
554	#ifdef IN_GC
555	Assert(!pRange \|\| MMHyperIsInsideArea(pVM, (RTGCPTR)(RTRCUINTPTR)pRange));
556	#endif
557
558	if (pRange)
559	{
560	/*
561	* Found a range.
562	*/
563	#ifndef IN_RING3
564	if (!pRange->pfnOutCallback)
565	{
566	# ifdef VBOX_WITH_STATISTICS
567	if (pStats)
568	STAM_COUNTER_INC(&pStats->CTXALLMID(Out,ToR3));
569	# endif
570	return VINF_IOM_HC_IOPORT_WRITE;
571	}
572	#endif
573	/* call the device. */
574	#ifdef VBOX_WITH_STATISTICS
575	if (pStats)
576	STAM_PROFILE_ADV_START(&pStats->CTXALLSUFF(ProfOut), a);
577	#endif
578	int rc = pRange->pfnOutCallback(pRange->pDevIns, pRange->pvUser, Port, u32Value, cbValue);
579
580	#ifdef VBOX_WITH_STATISTICS
581	if (pStats)
582	STAM_PROFILE_ADV_STOP(&pStats->CTXALLSUFF(ProfOut), a);
583	if (rc == VINF_SUCCESS && pStats)
584	STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out));
585	# ifndef IN_RING3
586	else if (rc == VINF_IOM_HC_IOPORT_WRITE && pStats)
587	STAM_COUNTER_INC(&pStats->CTXALLMID(Out, ToR3));
588	# endif
589	#endif
590	Log3(("IOMIOPortWrite: Port=%RTiop u32=%08RX32 cb=%d rc=%Vrc\n", Port, u32Value, cbValue, rc));
591	return rc;
592	}
593
594	#ifndef IN_RING3
595	/*
596	* Handler in ring-3?
597	*/
598	PIOMIOPORTRANGER3 pRangeR3 = iomIOPortGetRangeHC(&pVM->iom.s, Port);
599	if (pRangeR3)
600	{
601	# ifdef VBOX_WITH_STATISTICS
602	if (pStats)
603	STAM_COUNTER_INC(&pStats->CTXALLMID(Out,ToR3));
604	# endif
605	return VINF_IOM_HC_IOPORT_WRITE;
606	}
607	#endif
608
609	/*
610	* Ok, no handler for that port.
611	*/
612	#ifdef VBOX_WITH_STATISTICS
613	/* statistics. */
614	if (pStats)
615	STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out));
616	else
617	{
618	# ifndef IN_RING3
619	/* R3 will have to create the statistics record. */
620	return VINF_IOM_HC_IOPORT_WRITE;
621	# else
622	pStats = iomr3IOPortStatsCreate(pVM, Port, NULL);
623	if (pStats)
624	STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out));
625	# endif
626	}
627	#endif
628	Log3(("IOMIOPortWrite: Port=%RTiop u32=%08RX32 cb=%d nop\n", Port, u32Value, cbValue));
629	return VINF_SUCCESS;
630	}
631
632
633	/**
634	* Writes the string buffer of an I/O port register.
635	*
636	* @returns Strict VBox status code. Informational status codes other than the one documented
637	* here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
638	* @retval VINF_SUCCESS Success.
639	* @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
640	* status code must be passed on to EM.
641	* @retval VINF_IOM_HC_IOPORT_WRITE Defer the write to ring-3. (R0/GC only)
642	*
643	* @param pVM VM handle.
644	* @param Port The port to write.
645	* @param pGCPtrSrc Pointer to the source buffer (GC, incremented appropriately).
646	* @param pcTransfers Pointer to the number of transfer units to write, on return remaining transfer units.
647	* @param cb Size of the transfer unit (1, 2 or 4 bytes).
648	* */
649	IOMDECL(int) IOMIOPortWriteString(PVM pVM, RTIOPORT Port, PRTGCPTR pGCPtrSrc, PRTGCUINTREG pcTransfers, unsigned cb)
650	{
651	#ifdef LOG_ENABLED
652	const RTGCUINTREG cTransfers = *pcTransfers;
653	#endif
654	#ifdef VBOX_WITH_STATISTICS
655	/*
656	* Get the statistics record.
657	*/
658	PIOMIOPORTSTATS pStats = CTXALLSUFF(pVM->iom.s.pStatsLastWrite);
659	if (!pStats \|\| pStats->Core.Key != Port)
660	{
661	pStats = (PIOMIOPORTSTATS)RTAvloIOPortGet(&pVM->iom.s.CTXSUFF(pTrees)->IOPortStatTree, Port);
662	if (pStats)
663	CTXALLSUFF(pVM->iom.s.pStatsLastWrite) = pStats;
664	}
665	#endif
666
667	/*
668	* Get handler for current context.
669	*/
670	CTXALLSUFF(PIOMIOPORTRANGE) pRange = CTXALLSUFF(pVM->iom.s.pRangeLastWrite);
671	if ( !pRange
672	\|\| (unsigned)Port - (unsigned)pRange->Port >= (unsigned)pRange->cPorts)
673	{
674	pRange = iomIOPortGetRange(&pVM->iom.s, Port);
675	if (pRange)
676	CTXALLSUFF(pVM->iom.s.pRangeLastWrite) = pRange;
677	}
678	#ifdef IN_GC
679	Assert(!pRange \|\| MMHyperIsInsideArea(pVM, (RTGCPTR)(RTRCUINTPTR)pRange)); /** @todo r=bird: there is a macro for this which skips the #if'ing. */
680	#endif
681
682	if (pRange)
683	{
684	/*
685	* Found a range.
686	*/
687	#ifndef IN_RING3
688	if (!pRange->pfnOutStrCallback)
689	{
690	# ifdef VBOX_WITH_STATISTICS
691	if (pStats)
692	STAM_COUNTER_INC(&pStats->CTXALLMID(Out,ToR3));
693	# endif
694	return VINF_IOM_HC_IOPORT_WRITE;
695	}
696	#endif
697	/* call the device. */
698	#ifdef VBOX_WITH_STATISTICS
699	if (pStats)
700	STAM_PROFILE_ADV_START(&pStats->CTXALLSUFF(ProfOut), a);
701	#endif
702	int rc = pRange->pfnOutStrCallback(pRange->pDevIns, pRange->pvUser, Port, pGCPtrSrc, pcTransfers, cb);
703	#ifdef VBOX_WITH_STATISTICS
704	if (pStats)
705	STAM_PROFILE_ADV_STOP(&pStats->CTXALLSUFF(ProfOut), a);
706	if (rc == VINF_SUCCESS && pStats)
707	STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out));
708	# ifndef IN_RING3
709	else if (rc == VINF_IOM_HC_IOPORT_WRITE && pStats)
710	STAM_COUNTER_INC(&pStats->CTXALLMID(Out, ToR3));
711	# endif
712	#endif
713	Log3(("IOMIOPortWriteStr: Port=%RTiop pGCPtrSrc=%p pcTransfer=%p:{%#x->%#x} cb=%d rc=%Vrc\n",
714	Port, pGCPtrSrc, pcTransfers, cTransfers, *pcTransfers, cb, rc));
715	return rc;
716	}
717
718	#ifndef IN_RING3
719	/*
720	* Handler in ring-3?
721	*/
722	PIOMIOPORTRANGER3 pRangeR3 = iomIOPortGetRangeHC(&pVM->iom.s, Port);
723	if (pRangeR3)
724	{
725	# ifdef VBOX_WITH_STATISTICS
726	if (pStats)
727	STAM_COUNTER_INC(&pStats->CTXALLMID(Out,ToR3));
728	# endif
729	return VINF_IOM_HC_IOPORT_WRITE;
730	}
731	#endif
732
733	/*
734	* Ok, no handler for this port.
735	*/
736	#ifdef VBOX_WITH_STATISTICS
737	if (pStats)
738	STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out));
739	else
740	{
741	# ifndef IN_RING3
742	/* Ring-3 will have to create the statistics record. */
743	return VINF_IOM_HC_IOPORT_WRITE;
744	# else
745	pStats = iomr3IOPortStatsCreate(pVM, Port, NULL);
746	if (pStats)
747	STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out));
748	# endif
749	}
750	#endif
751
752	Log3(("IOMIOPortWriteStr: Port=%RTiop pGCPtrSrc=%p pcTransfer=%p:{%#x->%#x} cb=%d rc=VINF_SUCCESS\n",
753	Port, pGCPtrSrc, pcTransfers, cTransfers, *pcTransfers, cb));
754	return VINF_SUCCESS;
755	}
756
757
758	/**
759	* Checks that the operation is allowed according to the IOPL
760	* level and I/O bitmap.
761	*
762	* @returns Strict VBox status code. Informational status codes other than the one documented
763	* here are to be treated as internal failure.
764	* @retval VINF_SUCCESS Success.
765	* @retval VINF_EM_RAW_GUEST_TRAP The exception was left pending. (TRPMRaiseXcptErr)
766	* @retval VINF_TRPM_XCPT_DISPATCHED The exception was raised and dispatched for raw-mode execution. (TRPMRaiseXcptErr)
767	* @retval VINF_EM_RESCHEDULE_REM The exception was dispatched and cannot be executed in raw-mode. (TRPMRaiseXcptErr)
768	*
769	* @param pVM VM handle.
770	* @param pCtxCore Pointer to register frame.
771	* @param Port The I/O port number.
772	* @param cb The access size.
773	*/
774	IOMDECL(int) IOMInterpretCheckPortIOAccess(PVM pVM, PCPUMCTXCORE pCtxCore, RTIOPORT Port, unsigned cb)
775	{
776	/*
777	* If this isn't ring-0, we have to check for I/O privileges.
778	*/
779	uint32_t efl = CPUMRawGetEFlags(pVM, pCtxCore);
780	uint32_t cpl = CPUMGetGuestCPL(pVM, pCtxCore);
781
782	if ( ( cpl > 0
783	&& X86_EFL_GET_IOPL(efl) < cpl)
784	\|\| pCtxCore->eflags.Bits.u1VM /* IOPL is ignored in V86 mode; always check TSS bitmap */
785	)
786	{
787	/*
788	* Get TSS location and check if there can be a I/O bitmap.
789	*/
790	RTGCUINTPTR GCPtrTss;
791	RTGCUINTPTR cbTss;
792	bool fCanHaveIOBitmap;
793	int rc = SELMGetTSSInfo(pVM, &GCPtrTss, &cbTss, &fCanHaveIOBitmap);
794	if (VBOX_FAILURE(rc))
795	{
796	Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d %Vrc -> #GP(0)\n", Port, cb, rc));
797	return TRPMRaiseXcptErr(pVM, pCtxCore, X86_XCPT_GP, 0);
798	}
799
800	if ( !fCanHaveIOBitmap
801	\|\| cbTss <= sizeof(VBOXTSS))
802	{
803	Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d cbTss=%#x fCanHaveIOBitmap=%RTbool -> #GP(0)\n",
804	Port, cb, cbTss, fCanHaveIOBitmap));
805	return TRPMRaiseXcptErr(pVM, pCtxCore, X86_XCPT_GP, 0);
806	}
807
808	/*
809	* Fetch the I/O bitmap offset.
810	*/
811	uint16_t offIOPB;
812	rc = PGMPhysInterpretedRead(pVM, pCtxCore, &offIOPB, GCPtrTss + RT_OFFSETOF(VBOXTSS, offIoBitmap), sizeof(offIOPB));
813	if (rc != VINF_SUCCESS)
814	{
815	Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d GCPtrTss=%VGv %Vrc\n",
816	Port, cb, GCPtrTss, rc));
817	return rc;
818	}
819
820	/*
821	* Check the limit and read the two bitmap bytes.
822	*/
823	uint32_t offTss = offIOPB + (Port >> 3);
824	if (offTss + 1 >= cbTss)
825	{
826	Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d offTss=%#x cbTss=%#x -> #GP(0)\n",
827	Port, cb, offTss, cbTss));
828	return TRPMRaiseXcptErr(pVM, pCtxCore, X86_XCPT_GP, 0);
829	}
830	uint16_t u16;
831	rc = PGMPhysInterpretedRead(pVM, pCtxCore, &u16, GCPtrTss + offTss, sizeof(u16));
832	if (rc != VINF_SUCCESS)
833	{
834	Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d GCPtrTss=%VGv offTss=%#x -> %Vrc\n",
835	Port, cb, GCPtrTss, offTss, rc));
836	return rc;
837	}
838
839	/*
840	* All the bits must be clear.
841	*/
842	if ((u16 >> (Port & 7)) & ((1 << cb) - 1))
843	{
844	Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d u16=%#x -> #GP(0)\n",
845	Port, cb, u16, offTss));
846	return TRPMRaiseXcptErr(pVM, pCtxCore, X86_XCPT_GP, 0);
847	}
848	LogFlow(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d offTss=%#x cbTss=%#x u16=%#x -> OK\n",
849	Port, cb, u16, offTss, cbTss));
850	}
851	return VINF_SUCCESS;
852	}
853
854	/**
855	* IN <AL\|AX\|EAX>, <DX\|imm16>
856	*
857	* @returns Strict VBox status code. Informational status codes other than the one documented
858	* here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
859	* @retval VINF_SUCCESS Success.
860	* @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
861	* status code must be passed on to EM.
862	* @retval VINF_IOM_HC_IOPORT_READ Defer the read to ring-3. (R0/GC only)
863	* @retval VINF_EM_RAW_GUEST_TRAP The exception was left pending. (TRPMRaiseXcptErr)
864	* @retval VINF_TRPM_XCPT_DISPATCHED The exception was raised and dispatched for raw-mode execution. (TRPMRaiseXcptErr)
865	* @retval VINF_EM_RESCHEDULE_REM The exception was dispatched and cannot be executed in raw-mode. (TRPMRaiseXcptErr)
866	*
867	* @param pVM The virtual machine (GC pointer ofcourse).
868	* @param pRegFrame Pointer to CPUMCTXCORE guest registers structure.
869	* @param pCpu Disassembler CPU state.
870	*/
871	IOMDECL(int) IOMInterpretIN(PVM pVM, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pCpu)
872	{
873	#ifdef IN_GC
874	STAM_COUNTER_INC(&pVM->iom.s.StatGCInstIn);
875	#endif
876
877	/*
878	* Get port number from second parameter.
879	* And get the register size from the first parameter.
880	*/
881	uint64_t uPort = 0;
882	unsigned cbSize = 0;
883	bool fRc = iomGetRegImmData(pCpu, &pCpu->param2, pRegFrame, &uPort, &cbSize);
884	AssertMsg(fRc, ("Failed to get reg/imm port number!\n")); NOREF(fRc);
885
886	cbSize = iomGetRegSize(pCpu, &pCpu->param1);
887	Assert(cbSize > 0);
888	int rc = IOMInterpretCheckPortIOAccess(pVM, pRegFrame, uPort, cbSize);
889	if (rc == VINF_SUCCESS)
890	{
891	/*
892	* Attemp to read the port.
893	*/
894	uint32_t u32Data = ~0U;
895	rc = IOMIOPortRead(pVM, uPort, &u32Data, cbSize);
896	if (IOM_SUCCESS(rc))
897	{
898	/*
899	* Store the result in the AL\|AX\|EAX register.
900	*/
901	fRc = iomSaveDataToReg(pCpu, &pCpu->param1, pRegFrame, u32Data);
902	AssertMsg(fRc, ("Failed to store register value!\n")); NOREF(fRc);
903	}
904	else
905	AssertMsg(rc == VINF_IOM_HC_IOPORT_READ \|\| VBOX_FAILURE(rc), ("%Vrc\n", rc));
906	}
907	else
908	AssertMsg(rc == VINF_EM_RAW_GUEST_TRAP \|\| rc == VINF_TRPM_XCPT_DISPATCHED \|\| rc == VINF_TRPM_XCPT_DISPATCHED \|\| VBOX_FAILURE(rc), ("%Vrc\n", rc));
909	return rc;
910	}
911
912
913	/**
914	* OUT <DX\|imm16>, <AL\|AX\|EAX>
915	*
916	* @returns Strict VBox status code. Informational status codes other than the one documented
917	* here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
918	* @retval VINF_SUCCESS Success.
919	* @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
920	* status code must be passed on to EM.
921	* @retval VINF_IOM_HC_IOPORT_WRITE Defer the write to ring-3. (R0/GC only)
922	* @retval VINF_EM_RAW_GUEST_TRAP The exception was left pending. (TRPMRaiseXcptErr)
923	* @retval VINF_TRPM_XCPT_DISPATCHED The exception was raised and dispatched for raw-mode execution. (TRPMRaiseXcptErr)
924	* @retval VINF_EM_RESCHEDULE_REM The exception was dispatched and cannot be executed in raw-mode. (TRPMRaiseXcptErr)
925	*
926	* @param pVM The virtual machine (GC pointer ofcourse).
927	* @param pRegFrame Pointer to CPUMCTXCORE guest registers structure.
928	* @param pCpu Disassembler CPU state.
929	*/
930	IOMDECL(int) IOMInterpretOUT(PVM pVM, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pCpu)
931	{
932	#ifdef IN_GC
933	STAM_COUNTER_INC(&pVM->iom.s.StatGCInstOut);
934	#endif
935
936	/*
937	* Get port number from first parameter.
938	* And get the register size and value from the second parameter.
939	*/
940	uint64_t uPort = 0;
941	unsigned cbSize = 0;
942	bool fRc = iomGetRegImmData(pCpu, &pCpu->param1, pRegFrame, &uPort, &cbSize);
943	AssertMsg(fRc, ("Failed to get reg/imm port number!\n")); NOREF(fRc);
944
945	int rc = IOMInterpretCheckPortIOAccess(pVM, pRegFrame, uPort, cbSize);
946	if (rc == VINF_SUCCESS)
947	{
948	uint64_t u64Data = 0;
949	fRc = iomGetRegImmData(pCpu, &pCpu->param2, pRegFrame, &u64Data, &cbSize);
950	AssertMsg(fRc, ("Failed to get reg value!\n")); NOREF(fRc);
951
952	/*
953	* Attempt to write to the port.
954	*/
955	rc = IOMIOPortWrite(pVM, uPort, u64Data, cbSize);
956	AssertMsg(rc == VINF_SUCCESS \|\| rc == VINF_IOM_HC_IOPORT_WRITE \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST) \|\| VBOX_FAILURE(rc), ("%Vrc\n", rc));
957	}
958	else
959	AssertMsg(rc == VINF_EM_RAW_GUEST_TRAP \|\| rc == VINF_TRPM_XCPT_DISPATCHED \|\| rc == VINF_TRPM_XCPT_DISPATCHED \|\| VBOX_FAILURE(rc), ("%Vrc\n", rc));
960	return rc;
961	}

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source: vbox/trunk/src/VBox/VMM/VMMAll/IOMAll.cpp@ 10072

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