DevATA.cpp@ 60756

Last change on this file since 60756 was 59252, checked in by vboxsync, 9 years ago
pdmifs.h: Move the storage related interfaces (PDMIMEDIA, PDMIMOUNT, PDMISCSICONNECTOR, etc.) into a separate header to reduce the overall size of the header a bit
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 299.1 KB

Line
1	/* $Id: DevATA.cpp 59252 2016-01-05 10:54:49Z vboxsync $ */
2	/** @file
3	* VBox storage devices: ATA/ATAPI controller device (disk and cdrom).
4	*/
5
6	/*
7	* Copyright (C) 2006-2015 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Defined Constants And Macros *
21	*********************************************************************************************************************************/
22	/** Temporary instrumentation for tracking down potential virtual disk
23	* write performance issues. */
24	#undef VBOX_INSTRUMENT_DMA_WRITES
25
26	/** @name The SSM saved state versions.
27	* @{
28	*/
29	/** The current saved state version. */
30	#define ATA_SAVED_STATE_VERSION 20
31	/** The saved state version used by VirtualBox 3.0.
32	* This lacks the config part and has the type at the and. */
33	#define ATA_SAVED_STATE_VERSION_VBOX_30 19
34	#define ATA_SAVED_STATE_VERSION_WITH_BOOL_TYPE 18
35	#define ATA_SAVED_STATE_VERSION_WITHOUT_FULL_SENSE 16
36	#define ATA_SAVED_STATE_VERSION_WITHOUT_EVENT_STATUS 17
37	/** @} */
38
39
40	/*********************************************************************************************************************************
41	* Header Files *
42	*********************************************************************************************************************************/
43	#define LOG_GROUP LOG_GROUP_DEV_IDE
44	#include <VBox/vmm/pdmdev.h>
45	#include <VBox/vmm/pdmstorageifs.h>
46	#include <iprt/assert.h>
47	#include <iprt/string.h>
48	#ifdef IN_RING3
49	# include <iprt/uuid.h>
50	# include <iprt/semaphore.h>
51	# include <iprt/thread.h>
52	# include <iprt/time.h>
53	# include <iprt/alloc.h>
54	#endif /* IN_RING3 */
55	#include <iprt/critsect.h>
56	#include <iprt/asm.h>
57	#include <VBox/vmm/stam.h>
58	#include <VBox/vmm/mm.h>
59	#include <VBox/vmm/pgm.h>
60
61	#include <VBox/sup.h>
62	#include <VBox/scsi.h>
63
64	#include "PIIX3ATABmDma.h"
65	#include "ide.h"
66	#include "ATAPIPassthrough.h"
67	#include "VBoxDD.h"
68
69
70	/*********************************************************************************************************************************
71	* Defined Constants And Macros *
72	*********************************************************************************************************************************/
73	/**
74	* Maximum number of sectors to transfer in a READ/WRITE MULTIPLE request.
75	* Set to 1 to disable multi-sector read support. According to the ATA
76	* specification this must be a power of 2 and it must fit in an 8 bit
77	* value. Thus the only valid values are 1, 2, 4, 8, 16, 32, 64 and 128.
78	*/
79	#define ATA_MAX_MULT_SECTORS 128
80
81	/**
82	* Fastest PIO mode supported by the drive.
83	*/
84	#define ATA_PIO_MODE_MAX 4
85	/**
86	* Fastest MDMA mode supported by the drive.
87	*/
88	#define ATA_MDMA_MODE_MAX 2
89	/**
90	* Fastest UDMA mode supported by the drive.
91	*/
92	#define ATA_UDMA_MODE_MAX 6
93
94	/** ATAPI sense info size. */
95	#define ATAPI_SENSE_SIZE 64
96
97	/** The maximum number of release log entries per device. */
98	#define MAX_LOG_REL_ERRORS 1024
99
100	/* MediaEventStatus */
101	#define ATA_EVENT_STATUS_UNCHANGED 0 /*< medium event status not changed /
102	#define ATA_EVENT_STATUS_MEDIA_NEW 1 /*< new medium inserted /
103	#define ATA_EVENT_STATUS_MEDIA_REMOVED 2 /*< medium removed /
104	#define ATA_EVENT_STATUS_MEDIA_CHANGED 3 /*< medium was removed + new medium was inserted /
105	#define ATA_EVENT_STATUS_MEDIA_EJECT_REQUESTED 4 /*< medium eject requested (eject button pressed) /
106
107	/* Media track type */
108	#define ATA_MEDIA_TYPE_UNKNOWN 0 /*< unknown CD type /
109	#define ATA_MEDIA_NO_DISC 0x70 /*< Door closed, no medium /
110
111
112	/*********************************************************************************************************************************
113	* Structures and Typedefs *
114	*********************************************************************************************************************************/
115	/**
116	* The state of an ATA device.
117	*
118	* @implements PDMIBASE
119	* @implements PDMIBLOCKPORT
120	* @implements PDMIMOUNTNOTIFY
121	*/
122	typedef struct ATADevState
123	{
124	/** Flag indicating whether the current command uses LBA48 mode. */
125	bool fLBA48;
126	/** Flag indicating whether this drive implements the ATAPI command set. */
127	bool fATAPI;
128	/** Set if this interface has asserted the IRQ. */
129	bool fIrqPending;
130	/** Currently configured number of sectors in a multi-sector transfer. */
131	uint8_t cMultSectors;
132	/** PCHS disk geometry. */
133	PDMMEDIAGEOMETRY PCHSGeometry;
134	/** Total number of sectors on this disk. */
135	uint64_t cTotalSectors;
136	/** Sector size of the medium. */
137	uint32_t cbSector;
138	/** Number of sectors to transfer per IRQ. */
139	uint32_t cSectorsPerIRQ;
140
141	/** ATA/ATAPI register 1: feature (write-only). */
142	uint8_t uATARegFeature;
143	/** ATA/ATAPI register 1: feature, high order byte. */
144	uint8_t uATARegFeatureHOB;
145	/** ATA/ATAPI register 1: error (read-only). */
146	uint8_t uATARegError;
147	/** ATA/ATAPI register 2: sector count (read/write). */
148	uint8_t uATARegNSector;
149	/** ATA/ATAPI register 2: sector count, high order byte. */
150	uint8_t uATARegNSectorHOB;
151	/** ATA/ATAPI register 3: sector (read/write). */
152	uint8_t uATARegSector;
153	/** ATA/ATAPI register 3: sector, high order byte. */
154	uint8_t uATARegSectorHOB;
155	/** ATA/ATAPI register 4: cylinder low (read/write). */
156	uint8_t uATARegLCyl;
157	/** ATA/ATAPI register 4: cylinder low, high order byte. */
158	uint8_t uATARegLCylHOB;
159	/** ATA/ATAPI register 5: cylinder high (read/write). */
160	uint8_t uATARegHCyl;
161	/** ATA/ATAPI register 5: cylinder high, high order byte. */
162	uint8_t uATARegHCylHOB;
163	/** ATA/ATAPI register 6: select drive/head (read/write). */
164	uint8_t uATARegSelect;
165	/** ATA/ATAPI register 7: status (read-only). */
166	uint8_t uATARegStatus;
167	/** ATA/ATAPI register 7: command (write-only). */
168	uint8_t uATARegCommand;
169	/** ATA/ATAPI drive control register (write-only). */
170	uint8_t uATARegDevCtl;
171
172	/** Currently active transfer mode (MDMA/UDMA) and speed. */
173	uint8_t uATATransferMode;
174	/** Current transfer direction. */
175	uint8_t uTxDir;
176	/** Index of callback for begin transfer. */
177	uint8_t iBeginTransfer;
178	/** Index of callback for source/sink of data. */
179	uint8_t iSourceSink;
180	/** Flag indicating whether the current command transfers data in DMA mode. */
181	bool fDMA;
182	/** Set to indicate that ATAPI transfer semantics must be used. */
183	bool fATAPITransfer;
184
185	/** Total ATA/ATAPI transfer size, shared PIO/DMA. */
186	uint32_t cbTotalTransfer;
187	/** Elementary ATA/ATAPI transfer size, shared PIO/DMA. */
188	uint32_t cbElementaryTransfer;
189	/** Maximum ATAPI elementary transfer size, PIO only. */
190	uint32_t cbPIOTransferLimit;
191	/** ATAPI passthrough transfer size, shared PIO/DMA */
192	uint32_t cbAtapiPassthroughTransfer;
193	/** Current read/write buffer position, shared PIO/DMA. */
194	uint32_t iIOBufferCur;
195	/** First element beyond end of valid buffer content, shared PIO/DMA. */
196	uint32_t iIOBufferEnd;
197	/** Align the following fields correctly. */
198	uint32_t Alignment0;
199
200	/** ATA/ATAPI current PIO read/write transfer position. Not shared with DMA for safety reasons. */
201	uint32_t iIOBufferPIODataStart;
202	/** ATA/ATAPI current PIO read/write transfer end. Not shared with DMA for safety reasons. */
203	uint32_t iIOBufferPIODataEnd;
204
205	/** ATAPI current LBA position. */
206	uint32_t iATAPILBA;
207	/** ATAPI current sector size. */
208	uint32_t cbATAPISector;
209	/** ATAPI current command. */
210	uint8_t aATAPICmd[ATAPI_PACKET_SIZE];
211	/** ATAPI sense data. */
212	uint8_t abATAPISense[ATAPI_SENSE_SIZE];
213	/** HACK: Countdown till we report a newly unmounted drive as mounted. */
214	uint8_t cNotifiedMediaChange;
215	/** The same for GET_EVENT_STATUS for mechanism */
216	volatile uint32_t MediaEventStatus;
217
218	/** Media type if known. */
219	volatile uint32_t MediaTrackType;
220
221	/** The status LED state for this drive. */
222	PDMLED Led;
223
224	/** Size of I/O buffer. */
225	uint32_t cbIOBuffer;
226	/** Pointer to the I/O buffer. */
227	R3PTRTYPE(uint8_t *) pbIOBufferR3;
228	/** Pointer to the I/O buffer. */
229	R0PTRTYPE(uint8_t *) pbIOBufferR0;
230	/** Pointer to the I/O buffer. */
231	RCPTRTYPE(uint8_t *) pbIOBufferRC;
232
233	RTRCPTR Aligmnent1; /*< Align the statistics at an 8-byte boundary. /
234
235	/*
236	* No data that is part of the saved state after this point!!!!!
237	*/
238
239	/* Release statistics: number of ATA DMA commands. */
240	STAMCOUNTER StatATADMA;
241	/* Release statistics: number of ATA PIO commands. */
242	STAMCOUNTER StatATAPIO;
243	/* Release statistics: number of ATAPI PIO commands. */
244	STAMCOUNTER StatATAPIDMA;
245	/* Release statistics: number of ATAPI PIO commands. */
246	STAMCOUNTER StatATAPIPIO;
247	#ifdef VBOX_INSTRUMENT_DMA_WRITES
248	/* Release statistics: number of DMA sector writes and the time spent. */
249	STAMPROFILEADV StatInstrVDWrites;
250	#endif
251
252	/** Statistics: number of read operations and the time spent reading. */
253	STAMPROFILEADV StatReads;
254	/** Statistics: number of bytes read. */
255	STAMCOUNTER StatBytesRead;
256	/** Statistics: number of write operations and the time spent writing. */
257	STAMPROFILEADV StatWrites;
258	/** Statistics: number of bytes written. */
259	STAMCOUNTER StatBytesWritten;
260	/** Statistics: number of flush operations and the time spend flushing. */
261	STAMPROFILE StatFlushes;
262
263	/** Mark the drive as having a non-rotational medium (i.e. as a SSD). */
264	bool fNonRotational;
265	/** Enable passing through commands directly to the ATAPI drive. */
266	bool fATAPIPassthrough;
267	/** Flag whether to overwrite inquiry data in passthrough mode. */
268	bool fOverwriteInquiry;
269	/** Number of errors we've reported to the release log.
270	* This is to prevent flooding caused by something going horribly wrong.
271	* this value against MAX_LOG_REL_ERRORS in places likely to cause floods
272	* like the ones we currently seeing on the linux smoke tests (2006-11-10). */
273	uint32_t cErrors;
274	/** Timestamp of last started command. 0 if no command pending. */
275	uint64_t u64CmdTS;
276
277	/** Pointer to the attached driver's base interface. */
278	R3PTRTYPE(PPDMIBASE) pDrvBase;
279	/** Pointer to the attached driver's block interface. */
280	R3PTRTYPE(PPDMIMEDIA) pDrvMedia;
281	/** Pointer to the attached driver's mount interface.
282	* This is NULL if the driver isn't a removable unit. */
283	R3PTRTYPE(PPDMIMOUNT) pDrvMount;
284	/** The base interface. */
285	PDMIBASE IBase;
286	/** The block port interface. */
287	PDMIMEDIAPORT IPort;
288	/** The mount notify interface. */
289	PDMIMOUNTNOTIFY IMountNotify;
290	/** The LUN #. */
291	RTUINT iLUN;
292	#if HC_ARCH_BITS == 64
293	RTUINT Alignment2; /*< Align pDevInsR3 correctly. /
294	#endif
295	/** Pointer to device instance. */
296	PPDMDEVINSR3 pDevInsR3;
297	/** Pointer to controller instance. */
298	R3PTRTYPE(struct ATACONTROLLER *) pControllerR3;
299	/** Pointer to device instance. */
300	PPDMDEVINSR0 pDevInsR0;
301	/** Pointer to controller instance. */
302	R0PTRTYPE(struct ATACONTROLLER *) pControllerR0;
303	/** Pointer to device instance. */
304	PPDMDEVINSRC pDevInsRC;
305	/** Pointer to controller instance. */
306	RCPTRTYPE(struct ATACONTROLLER *) pControllerRC;
307
308	/** The serial number to use for IDENTIFY DEVICE commands. */
309	char szSerialNumber[ATA_SERIAL_NUMBER_LENGTH+1];
310	/** The firmware revision to use for IDENTIFY DEVICE commands. */
311	char szFirmwareRevision[ATA_FIRMWARE_REVISION_LENGTH+1];
312	/** The model number to use for IDENTIFY DEVICE commands. */
313	char szModelNumber[ATA_MODEL_NUMBER_LENGTH+1];
314	/** The vendor identification string for SCSI INQUIRY commands. */
315	char szInquiryVendorId[ATAPI_INQUIRY_VENDOR_ID_LENGTH+1];
316	/** The product identification string for SCSI INQUIRY commands. */
317	char szInquiryProductId[ATAPI_INQUIRY_PRODUCT_ID_LENGTH+1];
318	/** The revision string for SCSI INQUIRY commands. */
319	char szInquiryRevision[ATAPI_INQUIRY_REVISION_LENGTH+1];
320	/** The current tracklist of the loaded medium if passthrough is used. */
321	R3PTRTYPE(PTRACKLIST) pTrackList;
322
323	uint8_t abAlignment4[HC_ARCH_BITS == 64 ? 7 : 3];
324	} ATADevState;
325	AssertCompileMemberAlignment(ATADevState, cTotalSectors, 8);
326	AssertCompileMemberAlignment(ATADevState, StatATADMA, 8);
327	AssertCompileMemberAlignment(ATADevState, u64CmdTS, 8);
328	AssertCompileMemberAlignment(ATADevState, pDevInsR3, 8);
329	AssertCompileMemberAlignment(ATADevState, szSerialNumber, 8);
330	AssertCompileSizeAlignment(ATADevState, 8);
331
332
333	typedef struct ATATransferRequest
334	{
335	uint8_t iIf;
336	uint8_t iBeginTransfer;
337	uint8_t iSourceSink;
338	uint32_t cbTotalTransfer;
339	uint8_t uTxDir;
340	} ATATransferRequest;
341
342
343	typedef struct ATAAbortRequest
344	{
345	uint8_t iIf;
346	bool fResetDrive;
347	} ATAAbortRequest;
348
349
350	typedef enum
351	{
352	/** Begin a new transfer. */
353	ATA_AIO_NEW = 0,
354	/** Continue a DMA transfer. */
355	ATA_AIO_DMA,
356	/** Continue a PIO transfer. */
357	ATA_AIO_PIO,
358	/** Reset the drives on current controller, stop all transfer activity. */
359	ATA_AIO_RESET_ASSERTED,
360	/** Reset the drives on current controller, resume operation. */
361	ATA_AIO_RESET_CLEARED,
362	/** Abort the current transfer of a particular drive. */
363	ATA_AIO_ABORT
364	} ATAAIO;
365
366
367	typedef struct ATARequest
368	{
369	ATAAIO ReqType;
370	union
371	{
372	ATATransferRequest t;
373	ATAAbortRequest a;
374	} u;
375	} ATARequest;
376
377
378	typedef struct ATACONTROLLER
379	{
380	/** The base of the first I/O Port range. */
381	RTIOPORT IOPortBase1;
382	/** The base of the second I/O Port range. (0 if none) */
383	RTIOPORT IOPortBase2;
384	/** The assigned IRQ. */
385	RTUINT irq;
386	/** Access critical section */
387	PDMCRITSECT lock;
388
389	/** Selected drive. */
390	uint8_t iSelectedIf;
391	/** The interface on which to handle async I/O. */
392	uint8_t iAIOIf;
393	/** The state of the async I/O thread. */
394	uint8_t uAsyncIOState;
395	/** Flag indicating whether the next transfer is part of the current command. */
396	bool fChainedTransfer;
397	/** Set when the reset processing is currently active on this controller. */
398	bool fReset;
399	/** Flag whether the current transfer needs to be redone. */
400	bool fRedo;
401	/** Flag whether the redo suspend has been finished. */
402	bool fRedoIdle;
403	/** Flag whether the DMA operation to be redone is the final transfer. */
404	bool fRedoDMALastDesc;
405	/** The BusMaster DMA state. */
406	BMDMAState BmDma;
407	/** Pointer to first DMA descriptor. */
408	RTGCPHYS32 pFirstDMADesc;
409	/** Pointer to last DMA descriptor. */
410	RTGCPHYS32 pLastDMADesc;
411	/** Pointer to current DMA buffer (for redo operations). */
412	RTGCPHYS32 pRedoDMABuffer;
413	/** Size of current DMA buffer (for redo operations). */
414	uint32_t cbRedoDMABuffer;
415
416	/** The ATA/ATAPI interfaces of this controller. */
417	ATADevState aIfs[2];
418
419	/** Pointer to device instance. */
420	PPDMDEVINSR3 pDevInsR3;
421	/** Pointer to device instance. */
422	PPDMDEVINSR0 pDevInsR0;
423	/** Pointer to device instance. */
424	PPDMDEVINSRC pDevInsRC;
425
426	/** Set when the destroying the device instance and the thread must exit. */
427	uint32_t volatile fShutdown;
428	/** The async I/O thread handle. NIL_RTTHREAD if no thread. */
429	RTTHREAD AsyncIOThread;
430	/** The event semaphore the thread is waiting on for requests. */
431	SUPSEMEVENT hAsyncIOSem;
432	/** The support driver session handle. */
433	PSUPDRVSESSION pSupDrvSession;
434	/** The request queue for the AIO thread. One element is always unused. */
435	ATARequest aAsyncIORequests[4];
436	/** The position at which to insert a new request for the AIO thread. */
437	volatile uint8_t AsyncIOReqHead;
438	/** The position at which to get a new request for the AIO thread. */
439	volatile uint8_t AsyncIOReqTail;
440	/** Whether to call PDMDevHlpAsyncNotificationCompleted when idle. */
441	bool volatile fSignalIdle;
442	uint8_t Alignment3[1]; /*< Explicit padding of the 1 byte gap. /
443	/** Magic delay before triggering interrupts in DMA mode. */
444	uint32_t DelayIRQMillies;
445	/** The event semaphore the thread is waiting on during suspended I/O. */
446	RTSEMEVENT SuspendIOSem;
447	/** The lock protecting the request queue. */
448	PDMCRITSECT AsyncIORequestLock;
449	#if 0 /HC_ARCH_BITS == 32/
450	uint32_t Alignment0;
451	#endif
452
453	/** Timestamp we started the reset. */
454	uint64_t u64ResetTime;
455
456	/* Statistics */
457	STAMCOUNTER StatAsyncOps;
458	uint64_t StatAsyncMinWait;
459	uint64_t StatAsyncMaxWait;
460	STAMCOUNTER StatAsyncTimeUS;
461	STAMPROFILEADV StatAsyncTime;
462	STAMPROFILE StatLockWait;
463	} ATACONTROLLER, *PATACONTROLLER;
464	AssertCompileMemberAlignment(ATACONTROLLER, lock, 8);
465	AssertCompileMemberAlignment(ATACONTROLLER, aIfs, 8);
466	AssertCompileMemberAlignment(ATACONTROLLER, u64ResetTime, 8);
467	AssertCompileMemberAlignment(ATACONTROLLER, StatAsyncOps, 8);
468	AssertCompileMemberAlignment(ATACONTROLLER, AsyncIORequestLock, 8);
469	AssertCompileSizeAlignment(ATACONTROLLER, 8);
470
471	typedef enum CHIPSET
472	{
473	/** PIIX3 chipset, must be 0 for saved state compatibility */
474	CHIPSET_PIIX3 = 0,
475	/** PIIX4 chipset, must be 1 for saved state compatibility */
476	CHIPSET_PIIX4 = 1,
477	/** ICH6 chipset */
478	CHIPSET_ICH6 = 2
479	} CHIPSET;
480
481	/**
482	* The state of the ATA PCI device.
483	*
484	* @extends PCIDEVICE
485	* @implements PDMILEDPORTS
486	*/
487	typedef struct PCIATAState
488	{
489	PCIDEVICE dev;
490	/** The controllers. */
491	ATACONTROLLER aCts[2];
492	/** Pointer to device instance. */
493	PPDMDEVINSR3 pDevIns;
494	/** Status LUN: Base interface. */
495	PDMIBASE IBase;
496	/** Status LUN: Leds interface. */
497	PDMILEDPORTS ILeds;
498	/** Status LUN: Partner of ILeds. */
499	R3PTRTYPE(PPDMILEDCONNECTORS) pLedsConnector;
500	/** Status LUN: Media Notify. */
501	R3PTRTYPE(PPDMIMEDIANOTIFY) pMediaNotify;
502	/** Flag whether RC is enabled. */
503	bool fRCEnabled;
504	/** Flag whether R0 is enabled. */
505	bool fR0Enabled;
506	/** Flag indicating chipset being emulated. */
507	uint8_t u8Type;
508	bool Alignment0[HC_ARCH_BITS == 64 ? 5 : 1 ]; /*< Align the struct size. /
509	} PCIATAState;
510
511	#define PDMIBASE_2_PCIATASTATE(pInterface) ( (PCIATAState *)((uintptr_t)(pInterface) - RT_OFFSETOF(PCIATAState, IBase)) )
512	#define PDMILEDPORTS_2_PCIATASTATE(pInterface) ( (PCIATAState *)((uintptr_t)(pInterface) - RT_OFFSETOF(PCIATAState, ILeds)) )
513	#define PDMIMEDIAPORT_2_ATASTATE(pInterface) ( (ATADevState *)((uintptr_t)(pInterface) - RT_OFFSETOF(ATADevState, IPort)) )
514	#define PDMIMOUNT_2_ATASTATE(pInterface) ( (ATADevState *)((uintptr_t)(pInterface) - RT_OFFSETOF(ATADevState, IMount)) )
515	#define PDMIMOUNTNOTIFY_2_ATASTATE(pInterface) ( (ATADevState *)((uintptr_t)(pInterface) - RT_OFFSETOF(ATADevState, IMountNotify)) )
516	#define PCIDEV_2_PCIATASTATE(pPciDev) ( (PCIATAState *)(pPciDev) )
517
518	#define ATACONTROLLER_IDX(pController) ( (pController) - PDMINS_2_DATA(CONTROLLER_2_DEVINS(pController), PCIATAState *)->aCts )
519
520	#define ATADEVSTATE_2_CONTROLLER(pIf) ( (pIf)->CTX_SUFF(pController) )
521	#define ATADEVSTATE_2_DEVINS(pIf) ( (pIf)->CTX_SUFF(pDevIns) )
522	#define CONTROLLER_2_DEVINS(pController) ( (pController)->CTX_SUFF(pDevIns) )
523	#define PDMIBASE_2_ATASTATE(pInterface) ( (ATADevState *)((uintptr_t)(pInterface) - RT_OFFSETOF(ATADevState, IBase)) )
524	#define PDMIMEDIAPORT_2_ATASTATE(pInterface) ( (ATADevState *)((uintptr_t)(pInterface) - RT_OFFSETOF(ATADevState, IPort)) )
525
526	#ifndef VBOX_DEVICE_STRUCT_TESTCASE
527
528
529	/*********************************************************************************************************************************
530	* Internal Functions *
531	*********************************************************************************************************************************/
532	RT_C_DECLS_BEGIN
533
534	PDMBOTHCBDECL(int) ataIOPortWrite1Data(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb);
535	PDMBOTHCBDECL(int) ataIOPortRead1Data(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t u32, unsigned cb);
536	PDMBOTHCBDECL(int) ataIOPortWriteStr1Data(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint8_t const pbSrc,
537	uint32_t *pcTransfers, unsigned cb);
538	PDMBOTHCBDECL(int) ataIOPortReadStr1Data(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint8_t pbDst,
539	uint32_t *pcTransfers, unsigned cb);
540	PDMBOTHCBDECL(int) ataIOPortWrite1Other(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb);
541	PDMBOTHCBDECL(int) ataIOPortRead1Other(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t u32, unsigned cb);
542	PDMBOTHCBDECL(int) ataIOPortWrite2(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb);
543	PDMBOTHCBDECL(int) ataIOPortRead2(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t u32, unsigned cb);
544	PDMBOTHCBDECL(int) ataBMDMAIOPortWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb);
545	PDMBOTHCBDECL(int) ataBMDMAIOPortRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb);
546	RT_C_DECLS_END
547
548
549
550	DECLINLINE(void) ataSetStatusValue(ATADevState *s, uint8_t stat)
551	{
552	PATACONTROLLER pCtl = ATADEVSTATE_2_CONTROLLER(s);
553
554	/* Freeze status register contents while processing RESET. */
555	if (!pCtl->fReset)
556	{
557	s->uATARegStatus = stat;
558	Log2(("%s: LUN#%d status %#04x\n", __FUNCTION__, s->iLUN, s->uATARegStatus));
559	}
560	}
561
562
563	DECLINLINE(void) ataSetStatus(ATADevState *s, uint8_t stat)
564	{
565	PATACONTROLLER pCtl = ATADEVSTATE_2_CONTROLLER(s);
566
567	/* Freeze status register contents while processing RESET. */
568	if (!pCtl->fReset)
569	{
570	s->uATARegStatus \|= stat;
571	Log2(("%s: LUN#%d status %#04x\n", __FUNCTION__, s->iLUN, s->uATARegStatus));
572	}
573	}
574
575
576	DECLINLINE(void) ataUnsetStatus(ATADevState *s, uint8_t stat)
577	{
578	PATACONTROLLER pCtl = ATADEVSTATE_2_CONTROLLER(s);
579
580	/* Freeze status register contents while processing RESET. */
581	if (!pCtl->fReset)
582	{
583	s->uATARegStatus &= ~stat;
584	Log2(("%s: LUN#%d status %#04x\n", __FUNCTION__, s->iLUN, s->uATARegStatus));
585	}
586	}
587
588	#if defined(IN_RING3) \|\| defined(IN_RING0)
589
590	# ifdef IN_RING3
591	typedef void (PBeginTransferFunc)(ATADevState );
592	typedef bool (PSourceSinkFunc)(ATADevState );
593
594	static void ataR3ReadWriteSectorsBT(ATADevState *);
595	static void ataR3PacketBT(ATADevState *);
596	static void atapiR3CmdBT(ATADevState *);
597	static void atapiR3PassthroughCmdBT(ATADevState *);
598
599	static bool ataR3IdentifySS(ATADevState *);
600	static bool ataR3FlushSS(ATADevState *);
601	static bool ataR3ReadSectorsSS(ATADevState *);
602	static bool ataR3WriteSectorsSS(ATADevState *);
603	static bool ataR3ExecuteDeviceDiagnosticSS(ATADevState *);
604	static bool ataR3TrimSS(ATADevState *);
605	static bool ataR3PacketSS(ATADevState *);
606	static bool atapiR3GetConfigurationSS(ATADevState *);
607	static bool atapiR3GetEventStatusNotificationSS(ATADevState *);
608	static bool atapiR3IdentifySS(ATADevState *);
609	static bool atapiR3InquirySS(ATADevState *);
610	static bool atapiR3MechanismStatusSS(ATADevState *);
611	static bool atapiR3ModeSenseErrorRecoverySS(ATADevState *);
612	static bool atapiR3ModeSenseCDStatusSS(ATADevState *);
613	static bool atapiR3ReadSS(ATADevState *);
614	static bool atapiR3ReadCapacitySS(ATADevState *);
615	static bool atapiR3ReadDiscInformationSS(ATADevState *);
616	static bool atapiR3ReadTOCNormalSS(ATADevState *);
617	static bool atapiR3ReadTOCMultiSS(ATADevState *);
618	static bool atapiR3ReadTOCRawSS(ATADevState *);
619	static bool atapiR3ReadTrackInformationSS(ATADevState *);
620	static bool atapiR3RequestSenseSS(ATADevState *);
621	static bool atapiR3PassthroughSS(ATADevState *);
622	static bool atapiR3ReadDVDStructureSS(ATADevState *);
623	# endif /* IN_RING3 */
624
625	/**
626	* Begin of transfer function indexes for g_apfnBeginTransFuncs.
627	*/
628	typedef enum ATAFNBT
629	{
630	ATAFN_BT_NULL = 0,
631	ATAFN_BT_READ_WRITE_SECTORS,
632	ATAFN_BT_PACKET,
633	ATAFN_BT_ATAPI_CMD,
634	ATAFN_BT_ATAPI_PASSTHROUGH_CMD,
635	ATAFN_BT_MAX
636	} ATAFNBT;
637
638	# ifdef IN_RING3
639	/**
640	* Array of end transfer functions, the index is ATAFNET.
641	* Make sure ATAFNET and this array match!
642	*/
643	static const PBeginTransferFunc g_apfnBeginTransFuncs[ATAFN_BT_MAX] =
644	{
645	NULL,
646	ataR3ReadWriteSectorsBT,
647	ataR3PacketBT,
648	atapiR3CmdBT,
649	atapiR3PassthroughCmdBT,
650	};
651	# endif /* IN_RING3 */
652
653	/**
654	* Source/sink function indexes for g_apfnSourceSinkFuncs.
655	*/
656	typedef enum ATAFNSS
657	{
658	ATAFN_SS_NULL = 0,
659	ATAFN_SS_IDENTIFY,
660	ATAFN_SS_FLUSH,
661	ATAFN_SS_READ_SECTORS,
662	ATAFN_SS_WRITE_SECTORS,
663	ATAFN_SS_EXECUTE_DEVICE_DIAGNOSTIC,
664	ATAFN_SS_TRIM,
665	ATAFN_SS_PACKET,
666	ATAFN_SS_ATAPI_GET_CONFIGURATION,
667	ATAFN_SS_ATAPI_GET_EVENT_STATUS_NOTIFICATION,
668	ATAFN_SS_ATAPI_IDENTIFY,
669	ATAFN_SS_ATAPI_INQUIRY,
670	ATAFN_SS_ATAPI_MECHANISM_STATUS,
671	ATAFN_SS_ATAPI_MODE_SENSE_ERROR_RECOVERY,
672	ATAFN_SS_ATAPI_MODE_SENSE_CD_STATUS,
673	ATAFN_SS_ATAPI_READ,
674	ATAFN_SS_ATAPI_READ_CAPACITY,
675	ATAFN_SS_ATAPI_READ_DISC_INFORMATION,
676	ATAFN_SS_ATAPI_READ_TOC_NORMAL,
677	ATAFN_SS_ATAPI_READ_TOC_MULTI,
678	ATAFN_SS_ATAPI_READ_TOC_RAW,
679	ATAFN_SS_ATAPI_READ_TRACK_INFORMATION,
680	ATAFN_SS_ATAPI_REQUEST_SENSE,
681	ATAFN_SS_ATAPI_PASSTHROUGH,
682	ATAFN_SS_ATAPI_READ_DVD_STRUCTURE,
683	ATAFN_SS_MAX
684	} ATAFNSS;
685
686	# ifdef IN_RING3
687	/**
688	* Array of source/sink functions, the index is ATAFNSS.
689	* Make sure ATAFNSS and this array match!
690	*/
691	static const PSourceSinkFunc g_apfnSourceSinkFuncs[ATAFN_SS_MAX] =
692	{
693	NULL,
694	ataR3IdentifySS,
695	ataR3FlushSS,
696	ataR3ReadSectorsSS,
697	ataR3WriteSectorsSS,
698	ataR3ExecuteDeviceDiagnosticSS,
699	ataR3TrimSS,
700	ataR3PacketSS,
701	atapiR3GetConfigurationSS,
702	atapiR3GetEventStatusNotificationSS,
703	atapiR3IdentifySS,
704	atapiR3InquirySS,
705	atapiR3MechanismStatusSS,
706	atapiR3ModeSenseErrorRecoverySS,
707	atapiR3ModeSenseCDStatusSS,
708	atapiR3ReadSS,
709	atapiR3ReadCapacitySS,
710	atapiR3ReadDiscInformationSS,
711	atapiR3ReadTOCNormalSS,
712	atapiR3ReadTOCMultiSS,
713	atapiR3ReadTOCRawSS,
714	atapiR3ReadTrackInformationSS,
715	atapiR3RequestSenseSS,
716	atapiR3PassthroughSS,
717	atapiR3ReadDVDStructureSS
718	};
719	# endif /* IN_RING3 */
720
721
722	static const ATARequest g_ataDMARequest = { ATA_AIO_DMA, { { 0, 0, 0, 0, 0 } } };
723	static const ATARequest g_ataPIORequest = { ATA_AIO_PIO, { { 0, 0, 0, 0, 0 } } };
724	static const ATARequest g_ataResetARequest = { ATA_AIO_RESET_ASSERTED, { { 0, 0, 0, 0, 0 } } };
725	static const ATARequest g_ataResetCRequest = { ATA_AIO_RESET_CLEARED, { { 0, 0, 0, 0, 0 } } };
726
727	# ifdef IN_RING3
728	static void ataR3AsyncIOClearRequests(PATACONTROLLER pCtl)
729	{
730	int rc = PDMCritSectEnter(&pCtl->AsyncIORequestLock, VINF_SUCCESS);
731	AssertRC(rc);
732
733	pCtl->AsyncIOReqHead = 0;
734	pCtl->AsyncIOReqTail = 0;
735
736	rc = PDMCritSectLeave(&pCtl->AsyncIORequestLock);
737	AssertRC(rc);
738	}
739	# endif /* IN_RING3 */
740
741	static void ataHCAsyncIOPutRequest(PATACONTROLLER pCtl, const ATARequest *pReq)
742	{
743	int rc = PDMCritSectEnter(&pCtl->AsyncIORequestLock, VINF_SUCCESS);
744	AssertRC(rc);
745
746	Assert((pCtl->AsyncIOReqHead + 1) % RT_ELEMENTS(pCtl->aAsyncIORequests) != pCtl->AsyncIOReqTail);
747	memcpy(&pCtl->aAsyncIORequests[pCtl->AsyncIOReqHead], pReq, sizeof(*pReq));
748	pCtl->AsyncIOReqHead++;
749	pCtl->AsyncIOReqHead %= RT_ELEMENTS(pCtl->aAsyncIORequests);
750
751	rc = PDMCritSectLeave(&pCtl->AsyncIORequestLock);
752	AssertRC(rc);
753
754	rc = PDMHCCritSectScheduleExitEvent(&pCtl->lock, pCtl->hAsyncIOSem);
755	if (RT_FAILURE(rc))
756	{
757	rc = SUPSemEventSignal(pCtl->pSupDrvSession, pCtl->hAsyncIOSem);
758	AssertRC(rc);
759	}
760	}
761
762	# ifdef IN_RING3
763
764	static const ATARequest *ataR3AsyncIOGetCurrentRequest(PATACONTROLLER pCtl)
765	{
766	const ATARequest *pReq;
767
768	int rc = PDMCritSectEnter(&pCtl->AsyncIORequestLock, VINF_SUCCESS);
769	AssertRC(rc);
770
771	if (pCtl->AsyncIOReqHead != pCtl->AsyncIOReqTail)
772	pReq = &pCtl->aAsyncIORequests[pCtl->AsyncIOReqTail];
773	else
774	pReq = NULL;
775
776	rc = PDMCritSectLeave(&pCtl->AsyncIORequestLock);
777	AssertRC(rc);
778	return pReq;
779	}
780
781
782	/**
783	* Remove the request with the given type, as it's finished. The request
784	* is not removed blindly, as this could mean a RESET request that is not
785	* yet processed (but has cleared the request queue) is lost.
786	*
787	* @param pCtl Controller for which to remove the request.
788	* @param ReqType Type of the request to remove.
789	*/
790	static void ataR3AsyncIORemoveCurrentRequest(PATACONTROLLER pCtl, ATAAIO ReqType)
791	{
792	int rc = PDMCritSectEnter(&pCtl->AsyncIORequestLock, VINF_SUCCESS);
793	AssertRC(rc);
794
795	if (pCtl->AsyncIOReqHead != pCtl->AsyncIOReqTail && pCtl->aAsyncIORequests[pCtl->AsyncIOReqTail].ReqType == ReqType)
796	{
797	pCtl->AsyncIOReqTail++;
798	pCtl->AsyncIOReqTail %= RT_ELEMENTS(pCtl->aAsyncIORequests);
799	}
800
801	rc = PDMCritSectLeave(&pCtl->AsyncIORequestLock);
802	AssertRC(rc);
803	}
804
805
806	/**
807	* Dump the request queue for a particular controller. First dump the queue
808	* contents, then the already processed entries, as long as they haven't been
809	* overwritten.
810	*
811	* @param pCtl Controller for which to dump the queue.
812	*/
813	static void ataR3AsyncIODumpRequests(PATACONTROLLER pCtl)
814	{
815	int rc = PDMCritSectEnter(&pCtl->AsyncIORequestLock, VINF_SUCCESS);
816	AssertRC(rc);
817
818	LogRel(("PIIX3 ATA: Ctl#%d: request queue dump (topmost is current):\n", ATACONTROLLER_IDX(pCtl)));
819	uint8_t curr = pCtl->AsyncIOReqTail;
820	do
821	{
822	if (curr == pCtl->AsyncIOReqHead)
823	LogRel(("PIIX3 ATA: Ctl#%d: processed requests (topmost is oldest):\n", ATACONTROLLER_IDX(pCtl)));
824	switch (pCtl->aAsyncIORequests[curr].ReqType)
825	{
826	case ATA_AIO_NEW:
827	LogRel(("new transfer request, iIf=%d iBeginTransfer=%d iSourceSink=%d cbTotalTransfer=%d uTxDir=%d\n", pCtl->aAsyncIORequests[curr].u.t.iIf, pCtl->aAsyncIORequests[curr].u.t.iBeginTransfer, pCtl->aAsyncIORequests[curr].u.t.iSourceSink, pCtl->aAsyncIORequests[curr].u.t.cbTotalTransfer, pCtl->aAsyncIORequests[curr].u.t.uTxDir));
828	break;
829	case ATA_AIO_DMA:
830	LogRel(("dma transfer continuation\n"));
831	break;
832	case ATA_AIO_PIO:
833	LogRel(("pio transfer continuation\n"));
834	break;
835	case ATA_AIO_RESET_ASSERTED:
836	LogRel(("reset asserted request\n"));
837	break;
838	case ATA_AIO_RESET_CLEARED:
839	LogRel(("reset cleared request\n"));
840	break;
841	case ATA_AIO_ABORT:
842	LogRel(("abort request, iIf=%d fResetDrive=%d\n", pCtl->aAsyncIORequests[curr].u.a.iIf, pCtl->aAsyncIORequests[curr].u.a.fResetDrive));
843	break;
844	default:
845	LogRel(("unknown request %d\n", pCtl->aAsyncIORequests[curr].ReqType));
846	}
847	curr = (curr + 1) % RT_ELEMENTS(pCtl->aAsyncIORequests);
848	} while (curr != pCtl->AsyncIOReqTail);
849
850	rc = PDMCritSectLeave(&pCtl->AsyncIORequestLock);
851	AssertRC(rc);
852	}
853
854
855	/**
856	* Checks whether the request queue for a particular controller is empty
857	* or whether a particular controller is idle.
858	*
859	* @param pCtl Controller for which to check the queue.
860	* @param fStrict If set then the controller is checked to be idle.
861	*/
862	static bool ataR3AsyncIOIsIdle(PATACONTROLLER pCtl, bool fStrict)
863	{
864	int rc = PDMCritSectEnter(&pCtl->AsyncIORequestLock, VINF_SUCCESS);
865	AssertRC(rc);
866
867	bool fIdle = pCtl->fRedoIdle;
868	if (!fIdle)
869	fIdle = (pCtl->AsyncIOReqHead == pCtl->AsyncIOReqTail);
870	if (fStrict)
871	fIdle &= (pCtl->uAsyncIOState == ATA_AIO_NEW);
872
873	rc = PDMCritSectLeave(&pCtl->AsyncIORequestLock);
874	AssertRC(rc);
875	return fIdle;
876	}
877
878
879	/**
880	* Send a transfer request to the async I/O thread.
881	*
882	* @param s Pointer to the ATA device state data.
883	* @param cbTotalTransfer Data transfer size.
884	* @param uTxDir Data transfer direction.
885	* @param iBeginTransfer Index of BeginTransfer callback.
886	* @param iSourceSink Index of SourceSink callback.
887	* @param fChainedTransfer Whether this is a transfer that is part of the previous command/transfer.
888	*/
889	static void ataR3StartTransfer(ATADevState *s, uint32_t cbTotalTransfer, uint8_t uTxDir, ATAFNBT iBeginTransfer,
890	ATAFNSS iSourceSink, bool fChainedTransfer)
891	{
892	PATACONTROLLER pCtl = ATADEVSTATE_2_CONTROLLER(s);
893	ATARequest Req;
894
895	Assert(PDMCritSectIsOwner(&pCtl->lock));
896
897	/* Do not issue new requests while the RESET line is asserted. */
898	if (pCtl->fReset)
899	{
900	Log2(("%s: Ctl#%d: suppressed new request as RESET is active\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl)));
901	return;
902	}
903
904	/* If the controller is already doing something else right now, ignore
905	* the command that is being submitted. Some broken guests issue commands
906	* twice (e.g. the Linux kernel that comes with Acronis True Image 8). */
907	if (!fChainedTransfer && !ataR3AsyncIOIsIdle(pCtl, true /fStrict/))
908	{
909	Log(("%s: Ctl#%d: ignored command %#04x, controller state %d\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl), s->uATARegCommand, pCtl->uAsyncIOState));
910	LogRel(("PIIX3 IDE: guest issued command %#04x while controller busy\n", s->uATARegCommand));
911	return;
912	}
913
914	Req.ReqType = ATA_AIO_NEW;
915	if (fChainedTransfer)
916	Req.u.t.iIf = pCtl->iAIOIf;
917	else
918	Req.u.t.iIf = pCtl->iSelectedIf;
919	Req.u.t.cbTotalTransfer = cbTotalTransfer;
920	Req.u.t.uTxDir = uTxDir;
921	Req.u.t.iBeginTransfer = iBeginTransfer;
922	Req.u.t.iSourceSink = iSourceSink;
923	ataSetStatusValue(s, ATA_STAT_BUSY);
924	pCtl->fChainedTransfer = fChainedTransfer;
925
926	/*
927	* Kick the worker thread into action.
928	*/
929	Log2(("%s: Ctl#%d: message to async I/O thread, new request\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl)));
930	ataHCAsyncIOPutRequest(pCtl, &Req);
931	}
932
933
934	/**
935	* Send an abort command request to the async I/O thread.
936	*
937	* @param s Pointer to the ATA device state data.
938	* @param fResetDrive Whether to reset the drive or just abort a command.
939	*/
940	static void ataR3AbortCurrentCommand(ATADevState *s, bool fResetDrive)
941	{
942	PATACONTROLLER pCtl = ATADEVSTATE_2_CONTROLLER(s);
943	ATARequest Req;
944
945	Assert(PDMCritSectIsOwner(&pCtl->lock));
946
947	/* Do not issue new requests while the RESET line is asserted. */
948	if (pCtl->fReset)
949	{
950	Log2(("%s: Ctl#%d: suppressed aborting command as RESET is active\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl)));
951	return;
952	}
953
954	Req.ReqType = ATA_AIO_ABORT;
955	Req.u.a.iIf = pCtl->iSelectedIf;
956	Req.u.a.fResetDrive = fResetDrive;
957	ataSetStatus(s, ATA_STAT_BUSY);
958	Log2(("%s: Ctl#%d: message to async I/O thread, abort command on LUN#%d\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl), s->iLUN));
959	ataHCAsyncIOPutRequest(pCtl, &Req);
960	}
961	# endif /* IN_RING3 */
962
963	static void ataHCSetIRQ(ATADevState *s)
964	{
965	PATACONTROLLER pCtl = ATADEVSTATE_2_CONTROLLER(s);
966	PPDMDEVINS pDevIns = ATADEVSTATE_2_DEVINS(s);
967
968	if (!(s->uATARegDevCtl & ATA_DEVCTL_DISABLE_IRQ))
969	{
970	Log2(("%s: LUN#%d asserting IRQ\n", __FUNCTION__, s->iLUN));
971	/* The BMDMA unit unconditionally sets BM_STATUS_INT if the interrupt
972	* line is asserted. It monitors the line for a rising edge. */
973	if (!s->fIrqPending)
974	pCtl->BmDma.u8Status \|= BM_STATUS_INT;
975	/* Only actually set the IRQ line if updating the currently selected drive. */
976	if (s == &pCtl->aIfs[pCtl->iSelectedIf])
977	{
978	/** @todo experiment with adaptive IRQ delivery: for reads it is
979	* better to wait for IRQ delivery, as it reduces latency. */
980	if (pCtl->irq == 16)
981	PDMDevHlpPCISetIrq(pDevIns, 0, 1);
982	else
983	PDMDevHlpISASetIrq(pDevIns, pCtl->irq, 1);
984	}
985	}
986	s->fIrqPending = true;
987	}
988
989	#endif /* IN_RING0 \|\| IN_RING3 */
990
991	static void ataUnsetIRQ(ATADevState *s)
992	{
993	PATACONTROLLER pCtl = ATADEVSTATE_2_CONTROLLER(s);
994	PPDMDEVINS pDevIns = ATADEVSTATE_2_DEVINS(s);
995
996	if (!(s->uATARegDevCtl & ATA_DEVCTL_DISABLE_IRQ))
997	{
998	Log2(("%s: LUN#%d deasserting IRQ\n", __FUNCTION__, s->iLUN));
999	/* Only actually unset the IRQ line if updating the currently selected drive. */
1000	if (s == &pCtl->aIfs[pCtl->iSelectedIf])
1001	{
1002	if (pCtl->irq == 16)
1003	PDMDevHlpPCISetIrq(pDevIns, 0, 0);
1004	else
1005	PDMDevHlpISASetIrq(pDevIns, pCtl->irq, 0);
1006	}
1007	}
1008	s->fIrqPending = false;
1009	}
1010
1011	#if defined(IN_RING0) \|\| defined(IN_RING3)
1012
1013	static void ataHCPIOTransferStart(ATADevState *s, uint32_t start, uint32_t size)
1014	{
1015	Log2(("%s: LUN#%d start %d size %d\n", __FUNCTION__, s->iLUN, start, size));
1016	s->iIOBufferPIODataStart = start;
1017	s->iIOBufferPIODataEnd = start + size;
1018	ataSetStatus(s, ATA_STAT_DRQ \| ATA_STAT_SEEK);
1019	ataUnsetStatus(s, ATA_STAT_BUSY);
1020	}
1021
1022
1023	static void ataHCPIOTransferStop(ATADevState *s)
1024	{
1025	Log2(("%s: LUN#%d\n", __FUNCTION__, s->iLUN));
1026	if (s->fATAPITransfer)
1027	{
1028	s->uATARegNSector = (s->uATARegNSector & ~7) \| ATAPI_INT_REASON_IO \| ATAPI_INT_REASON_CD;
1029	Log2(("%s: interrupt reason %#04x\n", __FUNCTION__, s->uATARegNSector));
1030	ataHCSetIRQ(s);
1031	s->fATAPITransfer = false;
1032	}
1033	s->cbTotalTransfer = 0;
1034	s->cbElementaryTransfer = 0;
1035	s->iIOBufferPIODataStart = 0;
1036	s->iIOBufferPIODataEnd = 0;
1037	s->iBeginTransfer = ATAFN_BT_NULL;
1038	s->iSourceSink = ATAFN_SS_NULL;
1039	}
1040
1041
1042	static void ataHCPIOTransferLimitATAPI(ATADevState *s)
1043	{
1044	uint32_t cbLimit, cbTransfer;
1045
1046	cbLimit = s->cbPIOTransferLimit;
1047	/* Use maximum transfer size if the guest requested 0. Avoids a hang. */
1048	if (cbLimit == 0)
1049	cbLimit = 0xfffe;
1050	Log2(("%s: byte count limit=%d\n", __FUNCTION__, cbLimit));
1051	if (cbLimit == 0xffff)
1052	cbLimit--;
1053	cbTransfer = RT_MIN(s->cbTotalTransfer, s->iIOBufferEnd - s->iIOBufferCur);
1054	if (cbTransfer > cbLimit)
1055	{
1056	/* Byte count limit for clipping must be even in this case */
1057	if (cbLimit & 1)
1058	cbLimit--;
1059	cbTransfer = cbLimit;
1060	}
1061	s->uATARegLCyl = cbTransfer;
1062	s->uATARegHCyl = cbTransfer >> 8;
1063	s->cbElementaryTransfer = cbTransfer;
1064	}
1065
1066	# ifdef IN_RING3
1067
1068	static uint32_t ataR3GetNSectors(ATADevState *s)
1069	{
1070	/* 0 means either 256 (LBA28) or 65536 (LBA48) sectors. */
1071	if (s->fLBA48)
1072	{
1073	if (!s->uATARegNSector && !s->uATARegNSectorHOB)
1074	return 65536;
1075	else
1076	return s->uATARegNSectorHOB << 8 \| s->uATARegNSector;
1077	}
1078	else
1079	{
1080	if (!s->uATARegNSector)
1081	return 256;
1082	else
1083	return s->uATARegNSector;
1084	}
1085	}
1086
1087
1088	static void ataR3PadString(uint8_t pbDst, const char pbSrc, uint32_t cbSize)
1089	{
1090	for (uint32_t i = 0; i < cbSize; i++)
1091	{
1092	if (*pbSrc)
1093	pbDst[i ^ 1] = *pbSrc++;
1094	else
1095	pbDst[i ^ 1] = ' ';
1096	}
1097	}
1098
1099
1100	static void ataR3SCSIPadStr(uint8_t pbDst, const char pbSrc, uint32_t cbSize)
1101	{
1102	for (uint32_t i = 0; i < cbSize; i++)
1103	{
1104	if (*pbSrc)
1105	pbDst[i] = *pbSrc++;
1106	else
1107	pbDst[i] = ' ';
1108	}
1109	}
1110
1111
1112	DECLINLINE(void) ataH2BE_U16(uint8_t *pbBuf, uint16_t val)
1113	{
1114	pbBuf[0] = val >> 8;
1115	pbBuf[1] = val;
1116	}
1117
1118
1119	DECLINLINE(void) ataH2BE_U24(uint8_t *pbBuf, uint32_t val)
1120	{
1121	pbBuf[0] = val >> 16;
1122	pbBuf[1] = val >> 8;
1123	pbBuf[2] = val;
1124	}
1125
1126
1127	DECLINLINE(void) ataH2BE_U32(uint8_t *pbBuf, uint32_t val)
1128	{
1129	pbBuf[0] = val >> 24;
1130	pbBuf[1] = val >> 16;
1131	pbBuf[2] = val >> 8;
1132	pbBuf[3] = val;
1133	}
1134
1135
1136	DECLINLINE(uint16_t) ataBE2H_U16(const uint8_t *pbBuf)
1137	{
1138	return (pbBuf[0] << 8) \| pbBuf[1];
1139	}
1140
1141
1142	DECLINLINE(uint32_t) ataBE2H_U24(const uint8_t *pbBuf)
1143	{
1144	return (pbBuf[0] << 16) \| (pbBuf[1] << 8) \| pbBuf[2];
1145	}
1146
1147
1148	DECLINLINE(uint32_t) ataBE2H_U32(const uint8_t *pbBuf)
1149	{
1150	return (pbBuf[0] << 24) \| (pbBuf[1] << 16) \| (pbBuf[2] << 8) \| pbBuf[3];
1151	}
1152
1153
1154	DECLINLINE(void) ataLBA2MSF(uint8_t *pbBuf, uint32_t iATAPILBA)
1155	{
1156	iATAPILBA += 150;
1157	pbBuf[0] = (iATAPILBA / 75) / 60;
1158	pbBuf[1] = (iATAPILBA / 75) % 60;
1159	pbBuf[2] = iATAPILBA % 75;
1160	}
1161
1162
1163	DECLINLINE(uint32_t) ataMSF2LBA(const uint8_t *pbBuf)
1164	{
1165	return (pbBuf[0] * 60 + pbBuf[1]) * 75 + pbBuf[2];
1166	}
1167
1168	/**
1169	* Compares two MSF values.
1170	*
1171	* @returns 1 if the first value is greater than the second value.
1172	* 0 if both are equal
1173	* -1 if the first value is smaller than the second value.
1174	*/
1175	DECLINLINE(int) atapiCmpMSF(const uint8_t pbMSF1, const uint8_t pbMSF2)
1176	{
1177	int iRes = 0;
1178
1179	for (unsigned i = 0; i < 3; i++)
1180	{
1181	if (pbMSF1[i] < pbMSF2[i])
1182	{
1183	iRes = -1;
1184	break;
1185	}
1186	else if (pbMSF1[i] > pbMSF2[i])
1187	{
1188	iRes = 1;
1189	break;
1190	}
1191	}
1192
1193	return iRes;
1194	}
1195
1196	static void ataR3CmdOK(ATADevState *s, uint8_t status)
1197	{
1198	s->uATARegError = 0; /* Not needed by ATA spec, but cannot hurt. */
1199	ataSetStatusValue(s, ATA_STAT_READY \| status);
1200	}
1201
1202
1203	static void ataR3CmdError(ATADevState *s, uint8_t uErrorCode)
1204	{
1205	Log(("%s: code=%#x\n", __FUNCTION__, uErrorCode));
1206	Assert(uErrorCode);
1207	s->uATARegError = uErrorCode;
1208	ataSetStatusValue(s, ATA_STAT_READY \| ATA_STAT_ERR);
1209	s->cbTotalTransfer = 0;
1210	s->cbElementaryTransfer = 0;
1211	s->iIOBufferCur = 0;
1212	s->iIOBufferEnd = 0;
1213	s->uTxDir = PDMMEDIATXDIR_NONE;
1214	s->iBeginTransfer = ATAFN_BT_NULL;
1215	s->iSourceSink = ATAFN_SS_NULL;
1216	}
1217
1218	static uint32_t ataR3Checksum(void* ptr, size_t count)
1219	{
1220	uint8_t u8Sum = 0xa5, p = (uint8_t)ptr;
1221	size_t i;
1222
1223	for (i = 0; i < count; i++)
1224	{
1225	u8Sum += *p++;
1226	}
1227
1228	return (uint8_t)-(int32_t)u8Sum;
1229	}
1230
1231	static bool ataR3IdentifySS(ATADevState *s)
1232	{
1233	uint16_t *p;
1234
1235	Assert(s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE);
1236	Assert(s->cbElementaryTransfer == 512);
1237
1238	p = (uint16_t *)s->CTX_SUFF(pbIOBuffer);
1239	memset(p, 0, 512);
1240	p[0] = RT_H2LE_U16(0x0040);
1241	p[1] = RT_H2LE_U16(RT_MIN(s->PCHSGeometry.cCylinders, 16383));
1242	p[3] = RT_H2LE_U16(s->PCHSGeometry.cHeads);
1243	/* Block size; obsolete, but required for the BIOS. */
1244	p[5] = RT_H2LE_U16(s->cbSector);
1245	p[6] = RT_H2LE_U16(s->PCHSGeometry.cSectors);
1246	ataR3PadString((uint8_t )(p + 10), s->szSerialNumber, ATA_SERIAL_NUMBER_LENGTH); / serial number */
1247	p[20] = RT_H2LE_U16(3); /* XXX: retired, cache type */
1248	p[21] = RT_H2LE_U16(512); /* XXX: retired, cache size in sectors */
1249	p[22] = RT_H2LE_U16(0); /* ECC bytes per sector */
1250	ataR3PadString((uint8_t )(p + 23), s->szFirmwareRevision, ATA_FIRMWARE_REVISION_LENGTH); / firmware version */
1251	ataR3PadString((uint8_t )(p + 27), s->szModelNumber, ATA_MODEL_NUMBER_LENGTH); / model */
1252	# if ATA_MAX_MULT_SECTORS > 1
1253	p[47] = RT_H2LE_U16(0x8000 \| ATA_MAX_MULT_SECTORS);
1254	# endif
1255	p[48] = RT_H2LE_U16(1); /* dword I/O, used by the BIOS */
1256	p[49] = RT_H2LE_U16(1 << 11 \| 1 << 9 \| 1 << 8); /* DMA and LBA supported */
1257	p[50] = RT_H2LE_U16(1 << 14); /* No drive specific standby timer minimum */
1258	p[51] = RT_H2LE_U16(240); /* PIO transfer cycle */
1259	p[52] = RT_H2LE_U16(240); /* DMA transfer cycle */
1260	p[53] = RT_H2LE_U16(1 \| 1 << 1 \| 1 << 2); /* words 54-58,64-70,88 valid */
1261	p[54] = RT_H2LE_U16(RT_MIN(s->PCHSGeometry.cCylinders, 16383));
1262	p[55] = RT_H2LE_U16(s->PCHSGeometry.cHeads);
1263	p[56] = RT_H2LE_U16(s->PCHSGeometry.cSectors);
1264	p[57] = RT_H2LE_U16( RT_MIN(s->PCHSGeometry.cCylinders, 16383)
1265	* s->PCHSGeometry.cHeads
1266	* s->PCHSGeometry.cSectors);
1267	p[58] = RT_H2LE_U16( RT_MIN(s->PCHSGeometry.cCylinders, 16383)
1268	* s->PCHSGeometry.cHeads
1269	* s->PCHSGeometry.cSectors >> 16);
1270	if (s->cMultSectors)
1271	p[59] = RT_H2LE_U16(0x100 \| s->cMultSectors);
1272	if (s->cTotalSectors <= (1 << 28) - 1)
1273	{
1274	p[60] = RT_H2LE_U16(s->cTotalSectors);
1275	p[61] = RT_H2LE_U16(s->cTotalSectors >> 16);
1276	}
1277	else
1278	{
1279	/* Report maximum number of sectors possible with LBA28 */
1280	p[60] = RT_H2LE_U16(((1 << 28) - 1) & 0xffff);
1281	p[61] = RT_H2LE_U16(((1 << 28) - 1) >> 16);
1282	}
1283	p[63] = RT_H2LE_U16(ATA_TRANSFER_ID(ATA_MODE_MDMA, ATA_MDMA_MODE_MAX, s->uATATransferMode)); /* MDMA modes supported / mode enabled */
1284	p[64] = RT_H2LE_U16(ATA_PIO_MODE_MAX > 2 ? (1 << (ATA_PIO_MODE_MAX - 2)) - 1 : 0); /* PIO modes beyond PIO2 supported */
1285	p[65] = RT_H2LE_U16(120); /* minimum DMA multiword tx cycle time */
1286	p[66] = RT_H2LE_U16(120); /* recommended DMA multiword tx cycle time */
1287	p[67] = RT_H2LE_U16(120); /* minimum PIO cycle time without flow control */
1288	p[68] = RT_H2LE_U16(120); /* minimum PIO cycle time with IORDY flow control */
1289	if ( s->pDrvMedia->pfnDiscard
1290	\|\| s->cbSector != 512
1291	\|\| s->fNonRotational)
1292	{
1293	p[80] = RT_H2LE_U16(0x1f0); /* support everything up to ATA/ATAPI-8 ACS */
1294	p[81] = RT_H2LE_U16(0x28); /* conforms to ATA/ATAPI-8 ACS */
1295	}
1296	else
1297	{
1298	p[80] = RT_H2LE_U16(0x7e); /* support everything up to ATA/ATAPI-6 */
1299	p[81] = RT_H2LE_U16(0x22); /* conforms to ATA/ATAPI-6 */
1300	}
1301	p[82] = RT_H2LE_U16(1 << 3 \| 1 << 5 \| 1 << 6); /* supports power management, write cache and look-ahead */
1302	if (s->cTotalSectors <= (1 << 28) - 1)
1303	p[83] = RT_H2LE_U16(1 << 14 \| 1 << 12); /* supports FLUSH CACHE */
1304	else
1305	p[83] = RT_H2LE_U16(1 << 14 \| 1 << 10 \| 1 << 12 \| 1 << 13); /* supports LBA48, FLUSH CACHE and FLUSH CACHE EXT */
1306	p[84] = RT_H2LE_U16(1 << 14);
1307	p[85] = RT_H2LE_U16(1 << 3 \| 1 << 5 \| 1 << 6); /* enabled power management, write cache and look-ahead */
1308	if (s->cTotalSectors <= (1 << 28) - 1)
1309	p[86] = RT_H2LE_U16(1 << 12); /* enabled FLUSH CACHE */
1310	else
1311	p[86] = RT_H2LE_U16(1 << 10 \| 1 << 12 \| 1 << 13); /* enabled LBA48, FLUSH CACHE and FLUSH CACHE EXT */
1312	p[87] = RT_H2LE_U16(1 << 14);
1313	p[88] = RT_H2LE_U16(ATA_TRANSFER_ID(ATA_MODE_UDMA, ATA_UDMA_MODE_MAX, s->uATATransferMode)); /* UDMA modes supported / mode enabled */
1314	p[93] = RT_H2LE_U16((1 \| 1 << 1) << ((s->iLUN & 1) == 0 ? 0 : 8) \| 1 << 13 \| 1 << 14);
1315	if (s->cTotalSectors > (1 << 28) - 1)
1316	{
1317	p[100] = RT_H2LE_U16(s->cTotalSectors);
1318	p[101] = RT_H2LE_U16(s->cTotalSectors >> 16);
1319	p[102] = RT_H2LE_U16(s->cTotalSectors >> 32);
1320	p[103] = RT_H2LE_U16(s->cTotalSectors >> 48);
1321	}
1322
1323	if (s->cbSector != 512)
1324	{
1325	uint32_t cSectorSizeInWords = s->cbSector / sizeof(uint16_t);
1326	/* Enable reporting of logical sector size. */
1327	p[106] \|= RT_H2LE_U16(RT_BIT(12) \| RT_BIT(14));
1328	p[117] = RT_H2LE_U16(cSectorSizeInWords);
1329	p[118] = RT_H2LE_U16(cSectorSizeInWords >> 16);
1330	}
1331
1332	if (s->pDrvMedia->pfnDiscard) /** @todo: Set bit 14 in word 69 too? (Deterministic read after TRIM). */
1333	p[169] = RT_H2LE_U16(1); /* DATA SET MANAGEMENT command supported. */
1334	if (s->fNonRotational)
1335	p[217] = RT_H2LE_U16(1); /* Non-rotational medium */
1336	uint32_t uCsum = ataR3Checksum(p, 510);
1337	p[255] = RT_H2LE_U16(0xa5 \| (uCsum << 8)); /* Integrity word */
1338	s->iSourceSink = ATAFN_SS_NULL;
1339	ataR3CmdOK(s, ATA_STAT_SEEK);
1340	return false;
1341	}
1342
1343
1344	static bool ataR3FlushSS(ATADevState *s)
1345	{
1346	PATACONTROLLER pCtl = ATADEVSTATE_2_CONTROLLER(s);
1347	int rc;
1348
1349	Assert(s->uTxDir == PDMMEDIATXDIR_NONE);
1350	Assert(!s->cbElementaryTransfer);
1351
1352	PDMCritSectLeave(&pCtl->lock);
1353
1354	STAM_PROFILE_START(&s->StatFlushes, f);
1355	rc = s->pDrvMedia->pfnFlush(s->pDrvMedia);
1356	AssertRC(rc);
1357	STAM_PROFILE_STOP(&s->StatFlushes, f);
1358
1359	STAM_PROFILE_START(&pCtl->StatLockWait, a);
1360	PDMCritSectEnter(&pCtl->lock, VINF_SUCCESS);
1361	STAM_PROFILE_STOP(&pCtl->StatLockWait, a);
1362	ataR3CmdOK(s, 0);
1363	return false;
1364	}
1365
1366	static bool atapiR3IdentifySS(ATADevState *s)
1367	{
1368	uint16_t *p;
1369
1370	Assert(s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE);
1371	Assert(s->cbElementaryTransfer == 512);
1372
1373	p = (uint16_t *)s->CTX_SUFF(pbIOBuffer);
1374	memset(p, 0, 512);
1375	/* Removable CDROM, 3ms response, 12 byte packets */
1376	p[0] = RT_H2LE_U16(2 << 14 \| 5 << 8 \| 1 << 7 \| 0 << 5 \| 0 << 0);
1377	ataR3PadString((uint8_t )(p + 10), s->szSerialNumber, ATA_SERIAL_NUMBER_LENGTH); / serial number */
1378	p[20] = RT_H2LE_U16(3); /* XXX: retired, cache type */
1379	p[21] = RT_H2LE_U16(512); /* XXX: retired, cache size in sectors */
1380	ataR3PadString((uint8_t )(p + 23), s->szFirmwareRevision, ATA_FIRMWARE_REVISION_LENGTH); / firmware version */
1381	ataR3PadString((uint8_t )(p + 27), s->szModelNumber, ATA_MODEL_NUMBER_LENGTH); / model */
1382	p[49] = RT_H2LE_U16(1 << 11 \| 1 << 9 \| 1 << 8); /* DMA and LBA supported */
1383	p[50] = RT_H2LE_U16(1 << 14); /* No drive specific standby timer minimum */
1384	p[51] = RT_H2LE_U16(240); /* PIO transfer cycle */
1385	p[52] = RT_H2LE_U16(240); /* DMA transfer cycle */
1386	p[53] = RT_H2LE_U16(1 << 1 \| 1 << 2); /* words 64-70,88 are valid */
1387	p[63] = RT_H2LE_U16(ATA_TRANSFER_ID(ATA_MODE_MDMA, ATA_MDMA_MODE_MAX, s->uATATransferMode)); /* MDMA modes supported / mode enabled */
1388	p[64] = RT_H2LE_U16(ATA_PIO_MODE_MAX > 2 ? (1 << (ATA_PIO_MODE_MAX - 2)) - 1 : 0); /* PIO modes beyond PIO2 supported */
1389	p[65] = RT_H2LE_U16(120); /* minimum DMA multiword tx cycle time */
1390	p[66] = RT_H2LE_U16(120); /* recommended DMA multiword tx cycle time */
1391	p[67] = RT_H2LE_U16(120); /* minimum PIO cycle time without flow control */
1392	p[68] = RT_H2LE_U16(120); /* minimum PIO cycle time with IORDY flow control */
1393	p[73] = RT_H2LE_U16(0x003e); /* ATAPI CDROM major */
1394	p[74] = RT_H2LE_U16(9); /* ATAPI CDROM minor */
1395	p[75] = RT_H2LE_U16(1); /* queue depth 1 */
1396	p[80] = RT_H2LE_U16(0x7e); /* support everything up to ATA/ATAPI-6 */
1397	p[81] = RT_H2LE_U16(0x22); /* conforms to ATA/ATAPI-6 */
1398	p[82] = RT_H2LE_U16(1 << 4 \| 1 << 9); /* supports packet command set and DEVICE RESET */
1399	p[83] = RT_H2LE_U16(1 << 14);
1400	p[84] = RT_H2LE_U16(1 << 14);
1401	p[85] = RT_H2LE_U16(1 << 4 \| 1 << 9); /* enabled packet command set and DEVICE RESET */
1402	p[86] = RT_H2LE_U16(0);
1403	p[87] = RT_H2LE_U16(1 << 14);
1404	p[88] = RT_H2LE_U16(ATA_TRANSFER_ID(ATA_MODE_UDMA, ATA_UDMA_MODE_MAX, s->uATATransferMode)); /* UDMA modes supported / mode enabled */
1405	p[93] = RT_H2LE_U16((1 \| 1 << 1) << ((s->iLUN & 1) == 0 ? 0 : 8) \| 1 << 13 \| 1 << 14);
1406	/* According to ATAPI-5 spec:
1407	*
1408	* The use of this word is optional.
1409	* If bits 7:0 of this word contain the signature A5h, bits 15:8
1410	* contain the data
1411	* structure checksum.
1412	* The data structure checksum is the twos complement of the sum of
1413	* all bytes in words 0 through 254 and the byte consisting of
1414	* bits 7:0 in word 255.
1415	* Each byte shall be added with unsigned arithmetic,
1416	* and overflow shall be ignored.
1417	* The sum of all 512 bytes is zero when the checksum is correct.
1418	*/
1419	uint32_t uCsum = ataR3Checksum(p, 510);
1420	p[255] = RT_H2LE_U16(0xa5 \| (uCsum << 8)); /* Integrity word */
1421
1422	s->iSourceSink = ATAFN_SS_NULL;
1423	ataR3CmdOK(s, ATA_STAT_SEEK);
1424	return false;
1425	}
1426
1427
1428	static void ataR3SetSignature(ATADevState *s)
1429	{
1430	s->uATARegSelect &= 0xf0; /* clear head */
1431	/* put signature */
1432	s->uATARegNSector = 1;
1433	s->uATARegSector = 1;
1434	if (s->fATAPI)
1435	{
1436	s->uATARegLCyl = 0x14;
1437	s->uATARegHCyl = 0xeb;
1438	}
1439	else if (s->pDrvMedia)
1440	{
1441	s->uATARegLCyl = 0;
1442	s->uATARegHCyl = 0;
1443	}
1444	else
1445	{
1446	s->uATARegLCyl = 0xff;
1447	s->uATARegHCyl = 0xff;
1448	}
1449	}
1450
1451
1452	static uint64_t ataR3GetSector(ATADevState *s)
1453	{
1454	uint64_t iLBA;
1455	if (s->uATARegSelect & 0x40)
1456	{
1457	/* any LBA variant */
1458	if (s->fLBA48)
1459	{
1460	/* LBA48 */
1461	iLBA = ((uint64_t)s->uATARegHCylHOB << 40) \|
1462	((uint64_t)s->uATARegLCylHOB << 32) \|
1463	((uint64_t)s->uATARegSectorHOB << 24) \|
1464	((uint64_t)s->uATARegHCyl << 16) \|
1465	((uint64_t)s->uATARegLCyl << 8) \|
1466	s->uATARegSector;
1467	}
1468	else
1469	{
1470	/* LBA */
1471	iLBA = ((s->uATARegSelect & 0x0f) << 24) \| (s->uATARegHCyl << 16) \|
1472	(s->uATARegLCyl << 8) \| s->uATARegSector;
1473	}
1474	}
1475	else
1476	{
1477	/* CHS */
1478	iLBA = ((s->uATARegHCyl << 8) \| s->uATARegLCyl) * s->PCHSGeometry.cHeads * s->PCHSGeometry.cSectors +
1479	(s->uATARegSelect & 0x0f) * s->PCHSGeometry.cSectors +
1480	(s->uATARegSector - 1);
1481	}
1482	return iLBA;
1483	}
1484
1485	static void ataR3SetSector(ATADevState *s, uint64_t iLBA)
1486	{
1487	uint32_t cyl, r;
1488	if (s->uATARegSelect & 0x40)
1489	{
1490	/* any LBA variant */
1491	if (s->fLBA48)
1492	{
1493	/* LBA48 */
1494	s->uATARegHCylHOB = iLBA >> 40;
1495	s->uATARegLCylHOB = iLBA >> 32;
1496	s->uATARegSectorHOB = iLBA >> 24;
1497	s->uATARegHCyl = iLBA >> 16;
1498	s->uATARegLCyl = iLBA >> 8;
1499	s->uATARegSector = iLBA;
1500	}
1501	else
1502	{
1503	/* LBA */
1504	s->uATARegSelect = (s->uATARegSelect & 0xf0) \| (iLBA >> 24);
1505	s->uATARegHCyl = (iLBA >> 16);
1506	s->uATARegLCyl = (iLBA >> 8);
1507	s->uATARegSector = (iLBA);
1508	}
1509	}
1510	else
1511	{
1512	/* CHS */
1513	cyl = iLBA / (s->PCHSGeometry.cHeads * s->PCHSGeometry.cSectors);
1514	r = iLBA % (s->PCHSGeometry.cHeads * s->PCHSGeometry.cSectors);
1515	s->uATARegHCyl = cyl >> 8;
1516	s->uATARegLCyl = cyl;
1517	s->uATARegSelect = (s->uATARegSelect & 0xf0) \| ((r / s->PCHSGeometry.cSectors) & 0x0f);
1518	s->uATARegSector = (r % s->PCHSGeometry.cSectors) + 1;
1519	}
1520	}
1521
1522
1523	static void ataR3WarningDiskFull(PPDMDEVINS pDevIns)
1524	{
1525	int rc;
1526	LogRel(("PIIX3 ATA: Host disk full\n"));
1527	rc = PDMDevHlpVMSetRuntimeError(pDevIns, VMSETRTERR_FLAGS_SUSPEND \| VMSETRTERR_FLAGS_NO_WAIT, "DevATA_DISKFULL",
1528	N_("Host system reported disk full. VM execution is suspended. You can resume after freeing some space"));
1529	AssertRC(rc);
1530	}
1531
1532	static void ataR3WarningFileTooBig(PPDMDEVINS pDevIns)
1533	{
1534	int rc;
1535	LogRel(("PIIX3 ATA: File too big\n"));
1536	rc = PDMDevHlpVMSetRuntimeError(pDevIns, VMSETRTERR_FLAGS_SUSPEND \| VMSETRTERR_FLAGS_NO_WAIT, "DevATA_FILETOOBIG",
1537	N_("Host system reported that the file size limit of the host file system has been exceeded. VM execution is suspended. You need to move your virtual hard disk to a filesystem which allows bigger files"));
1538	AssertRC(rc);
1539	}
1540
1541	static void ataR3WarningISCSI(PPDMDEVINS pDevIns)
1542	{
1543	int rc;
1544	LogRel(("PIIX3 ATA: iSCSI target unavailable\n"));
1545	rc = PDMDevHlpVMSetRuntimeError(pDevIns, VMSETRTERR_FLAGS_SUSPEND \| VMSETRTERR_FLAGS_NO_WAIT, "DevATA_ISCSIDOWN",
1546	N_("The iSCSI target has stopped responding. VM execution is suspended. You can resume when it is available again"));
1547	AssertRC(rc);
1548	}
1549
1550	static bool ataR3IsRedoSetWarning(ATADevState *s, int rc)
1551	{
1552	PATACONTROLLER pCtl = ATADEVSTATE_2_CONTROLLER(s);
1553	Assert(!PDMCritSectIsOwner(&pCtl->lock));
1554	if (rc == VERR_DISK_FULL)
1555	{
1556	pCtl->fRedoIdle = true;
1557	ataR3WarningDiskFull(ATADEVSTATE_2_DEVINS(s));
1558	return true;
1559	}
1560	if (rc == VERR_FILE_TOO_BIG)
1561	{
1562	pCtl->fRedoIdle = true;
1563	ataR3WarningFileTooBig(ATADEVSTATE_2_DEVINS(s));
1564	return true;
1565	}
1566	if (rc == VERR_BROKEN_PIPE \|\| rc == VERR_NET_CONNECTION_REFUSED)
1567	{
1568	pCtl->fRedoIdle = true;
1569	/* iSCSI connection abort (first error) or failure to reestablish
1570	* connection (second error). Pause VM. On resume we'll retry. */
1571	ataR3WarningISCSI(ATADEVSTATE_2_DEVINS(s));
1572	return true;
1573	}
1574	if (rc == VERR_VD_DEK_MISSING)
1575	{
1576	/* Error message already set. */
1577	pCtl->fRedoIdle = true;
1578	return true;
1579	}
1580
1581	return false;
1582	}
1583
1584
1585	static int ataR3ReadSectors(ATADevState s, uint64_t u64Sector, void pvBuf,
1586	uint32_t cSectors, bool *pfRedo)
1587	{
1588	PATACONTROLLER pCtl = ATADEVSTATE_2_CONTROLLER(s);
1589	int rc;
1590
1591	PDMCritSectLeave(&pCtl->lock);
1592
1593	STAM_PROFILE_ADV_START(&s->StatReads, r);
1594	s->Led.Asserted.s.fReading = s->Led.Actual.s.fReading = 1;
1595	rc = s->pDrvMedia->pfnRead(s->pDrvMedia, u64Sector * s->cbSector, pvBuf, cSectors * s->cbSector);
1596	s->Led.Actual.s.fReading = 0;
1597	STAM_PROFILE_ADV_STOP(&s->StatReads, r);
1598	Log4(("ataR3ReadSectors: rc=%Rrc cSectors=%#x u64Sector=%llu\n%.*Rhxd\n",
1599	rc, cSectors, u64Sector, cSectors * s->cbSector, pvBuf));
1600
1601	STAM_REL_COUNTER_ADD(&s->StatBytesRead, cSectors * s->cbSector);
1602
1603	if (RT_SUCCESS(rc))
1604	*pfRedo = false;
1605	else
1606	*pfRedo = ataR3IsRedoSetWarning(s, rc);
1607
1608	STAM_PROFILE_START(&pCtl->StatLockWait, a);
1609	PDMCritSectEnter(&pCtl->lock, VINF_SUCCESS);
1610	STAM_PROFILE_STOP(&pCtl->StatLockWait, a);
1611	return rc;
1612	}
1613
1614
1615	static int ataR3WriteSectors(ATADevState *s, uint64_t u64Sector,
1616	const void pvBuf, uint32_t cSectors, bool pfRedo)
1617	{
1618	PATACONTROLLER pCtl = ATADEVSTATE_2_CONTROLLER(s);
1619	int rc;
1620
1621	PDMCritSectLeave(&pCtl->lock);
1622
1623	STAM_PROFILE_ADV_START(&s->StatWrites, w);
1624	s->Led.Asserted.s.fWriting = s->Led.Actual.s.fWriting = 1;
1625	# ifdef VBOX_INSTRUMENT_DMA_WRITES
1626	if (s->fDMA)
1627	STAM_PROFILE_ADV_START(&s->StatInstrVDWrites, vw);
1628	# endif
1629	rc = s->pDrvMedia->pfnWrite(s->pDrvMedia, u64Sector * s->cbSector, pvBuf, cSectors * s->cbSector);
1630	# ifdef VBOX_INSTRUMENT_DMA_WRITES
1631	if (s->fDMA)
1632	STAM_PROFILE_ADV_STOP(&s->StatInstrVDWrites, vw);
1633	# endif
1634	s->Led.Actual.s.fWriting = 0;
1635	STAM_PROFILE_ADV_STOP(&s->StatWrites, w);
1636	Log4(("ataR3WriteSectors: rc=%Rrc cSectors=%#x u64Sector=%llu\n%.*Rhxd\n",
1637	rc, cSectors, u64Sector, cSectors * s->cbSector, pvBuf));
1638
1639	STAM_REL_COUNTER_ADD(&s->StatBytesWritten, cSectors * s->cbSector);
1640
1641	if (RT_SUCCESS(rc))
1642	*pfRedo = false;
1643	else
1644	*pfRedo = ataR3IsRedoSetWarning(s, rc);
1645
1646	STAM_PROFILE_START(&pCtl->StatLockWait, a);
1647	PDMCritSectEnter(&pCtl->lock, VINF_SUCCESS);
1648	STAM_PROFILE_STOP(&pCtl->StatLockWait, a);
1649	return rc;
1650	}
1651
1652
1653	static void ataR3ReadWriteSectorsBT(ATADevState *s)
1654	{
1655	uint32_t cSectors;
1656
1657	cSectors = s->cbTotalTransfer / s->cbSector;
1658	if (cSectors > s->cSectorsPerIRQ)
1659	s->cbElementaryTransfer = s->cSectorsPerIRQ * s->cbSector;
1660	else
1661	s->cbElementaryTransfer = cSectors * s->cbSector;
1662	if (s->uTxDir == PDMMEDIATXDIR_TO_DEVICE)
1663	ataR3CmdOK(s, 0);
1664	}
1665
1666
1667	static bool ataR3ReadSectorsSS(ATADevState *s)
1668	{
1669	int rc;
1670	uint32_t cSectors;
1671	uint64_t iLBA;
1672	bool fRedo;
1673
1674	cSectors = s->cbElementaryTransfer / s->cbSector;
1675	Assert(cSectors);
1676	iLBA = ataR3GetSector(s);
1677	Log(("%s: %d sectors at LBA %d\n", __FUNCTION__, cSectors, iLBA));
1678	rc = ataR3ReadSectors(s, iLBA, s->CTX_SUFF(pbIOBuffer), cSectors, &fRedo);
1679	if (RT_SUCCESS(rc))
1680	{
1681	ataR3SetSector(s, iLBA + cSectors);
1682	if (s->cbElementaryTransfer == s->cbTotalTransfer)
1683	s->iSourceSink = ATAFN_SS_NULL;
1684	ataR3CmdOK(s, ATA_STAT_SEEK);
1685	}
1686	else
1687	{
1688	if (fRedo)
1689	return fRedo;
1690	if (s->cErrors++ < MAX_LOG_REL_ERRORS)
1691	LogRel(("PIIX3 ATA: LUN#%d: disk read error (rc=%Rrc iSector=%#RX64 cSectors=%#RX32)\n",
1692	s->iLUN, rc, iLBA, cSectors));
1693
1694	/*
1695	* Check if we got interrupted. We don't need to set status variables
1696	* because the request was aborted.
1697	*/
1698	if (rc != VERR_INTERRUPTED)
1699	ataR3CmdError(s, ID_ERR);
1700	}
1701	return false;
1702	}
1703
1704
1705	static bool ataR3WriteSectorsSS(ATADevState *s)
1706	{
1707	int rc;
1708	uint32_t cSectors;
1709	uint64_t iLBA;
1710	bool fRedo;
1711
1712	cSectors = s->cbElementaryTransfer / s->cbSector;
1713	Assert(cSectors);
1714	iLBA = ataR3GetSector(s);
1715	Log(("%s: %d sectors at LBA %d\n", __FUNCTION__, cSectors, iLBA));
1716	rc = ataR3WriteSectors(s, iLBA, s->CTX_SUFF(pbIOBuffer), cSectors, &fRedo);
1717	if (RT_SUCCESS(rc))
1718	{
1719	ataR3SetSector(s, iLBA + cSectors);
1720	if (!s->cbTotalTransfer)
1721	s->iSourceSink = ATAFN_SS_NULL;
1722	ataR3CmdOK(s, ATA_STAT_SEEK);
1723	}
1724	else
1725	{
1726	if (fRedo)
1727	return fRedo;
1728	if (s->cErrors++ < MAX_LOG_REL_ERRORS)
1729	LogRel(("PIIX3 ATA: LUN#%d: disk write error (rc=%Rrc iSector=%#RX64 cSectors=%#RX32)\n",
1730	s->iLUN, rc, iLBA, cSectors));
1731
1732	/*
1733	* Check if we got interrupted. We don't need to set status variables
1734	* because the request was aborted.
1735	*/
1736	if (rc != VERR_INTERRUPTED)
1737	ataR3CmdError(s, ID_ERR);
1738	}
1739	return false;
1740	}
1741
1742
1743	static void atapiR3CmdOK(ATADevState *s)
1744	{
1745	s->uATARegError = 0;
1746	ataSetStatusValue(s, ATA_STAT_READY);
1747	s->uATARegNSector = (s->uATARegNSector & ~7)
1748	\| ((s->uTxDir != PDMMEDIATXDIR_TO_DEVICE) ? ATAPI_INT_REASON_IO : 0)
1749	\| (!s->cbTotalTransfer ? ATAPI_INT_REASON_CD : 0);
1750	Log2(("%s: interrupt reason %#04x\n", __FUNCTION__, s->uATARegNSector));
1751
1752	memset(s->abATAPISense, '\0', sizeof(s->abATAPISense));
1753	s->abATAPISense[0] = 0x70 \| (1 << 7);
1754	s->abATAPISense[7] = 10;
1755	}
1756
1757
1758	static void atapiR3CmdError(ATADevState s, const uint8_t pabATAPISense, size_t cbATAPISense)
1759	{
1760	Log(("%s: sense=%#x (%s) asc=%#x ascq=%#x (%s)\n", __FUNCTION__, pabATAPISense[2] & 0x0f, SCSISenseText(pabATAPISense[2] & 0x0f),
1761	pabATAPISense[12], pabATAPISense[13], SCSISenseExtText(pabATAPISense[12], pabATAPISense[13])));
1762	s->uATARegError = pabATAPISense[2] << 4;
1763	ataSetStatusValue(s, ATA_STAT_READY \| ATA_STAT_ERR);
1764	s->uATARegNSector = (s->uATARegNSector & ~7) \| ATAPI_INT_REASON_IO \| ATAPI_INT_REASON_CD;
1765	Log2(("%s: interrupt reason %#04x\n", __FUNCTION__, s->uATARegNSector));
1766	memset(s->abATAPISense, '\0', sizeof(s->abATAPISense));
1767	memcpy(s->abATAPISense, pabATAPISense, RT_MIN(cbATAPISense, sizeof(s->abATAPISense)));
1768	s->cbTotalTransfer = 0;
1769	s->cbElementaryTransfer = 0;
1770	s->cbAtapiPassthroughTransfer = 0;
1771	s->iIOBufferCur = 0;
1772	s->iIOBufferEnd = 0;
1773	s->uTxDir = PDMMEDIATXDIR_NONE;
1774	s->iBeginTransfer = ATAFN_BT_NULL;
1775	s->iSourceSink = ATAFN_SS_NULL;
1776	}
1777
1778
1779	/** @todo deprecated function - doesn't provide enough info. Replace by direct
1780	* calls to atapiR3CmdError() with full data. */
1781	static void atapiR3CmdErrorSimple(ATADevState *s, uint8_t uATAPISenseKey, uint8_t uATAPIASC)
1782	{
1783	uint8_t abATAPISense[ATAPI_SENSE_SIZE];
1784	memset(abATAPISense, '\0', sizeof(abATAPISense));
1785	abATAPISense[0] = 0x70 \| (1 << 7);
1786	abATAPISense[2] = uATAPISenseKey & 0x0f;
1787	abATAPISense[7] = 10;
1788	abATAPISense[12] = uATAPIASC;
1789	atapiR3CmdError(s, abATAPISense, sizeof(abATAPISense));
1790	}
1791
1792
1793	static void atapiR3CmdBT(ATADevState *s)
1794	{
1795	s->fATAPITransfer = true;
1796	s->cbElementaryTransfer = s->cbTotalTransfer;
1797	s->cbAtapiPassthroughTransfer = s->cbTotalTransfer;
1798	s->cbPIOTransferLimit = s->uATARegLCyl \| (s->uATARegHCyl << 8);
1799	if (s->uTxDir == PDMMEDIATXDIR_TO_DEVICE)
1800	atapiR3CmdOK(s);
1801	}
1802
1803
1804	static void atapiR3PassthroughCmdBT(ATADevState *s)
1805	{
1806	/** @todo implement an algorithm for correctly determining the read and
1807	* write sector size without sending additional commands to the drive.
1808	* This should be doable by saving processing the configuration requests
1809	* and replies. */
1810	# if 0
1811	if (s->uTxDir == PDMMEDIATXDIR_TO_DEVICE)
1812	{
1813	uint8_t cmd = s->aATAPICmd[0];
1814	if (cmd == SCSI_WRITE_10 \|\| cmd == SCSI_WRITE_12 \|\| cmd == SCSI_WRITE_AND_VERIFY_10)
1815	{
1816	uint8_t aModeSenseCmd[10];
1817	uint8_t aModeSenseResult[16];
1818	uint8_t uDummySense;
1819	uint32_t cbTransfer;
1820	int rc;
1821
1822	cbTransfer = sizeof(aModeSenseResult);
1823	aModeSenseCmd[0] = SCSI_MODE_SENSE_10;
1824	aModeSenseCmd[1] = 0x08; /* disable block descriptor = 1 */
1825	aModeSenseCmd[2] = (SCSI_PAGECONTROL_CURRENT << 6) \| SCSI_MODEPAGE_WRITE_PARAMETER;
1826	aModeSenseCmd[3] = 0; /* subpage code */
1827	aModeSenseCmd[4] = 0; /* reserved */
1828	aModeSenseCmd[5] = 0; /* reserved */
1829	aModeSenseCmd[6] = 0; /* reserved */
1830	aModeSenseCmd[7] = cbTransfer >> 8;
1831	aModeSenseCmd[8] = cbTransfer & 0xff;
1832	aModeSenseCmd[9] = 0; /* control */
1833	rc = s->pDrvMedia->pfnSendCmd(s->pDrvMedia, aModeSenseCmd, PDMMEDIATXDIR_FROM_DEVICE, aModeSenseResult, &cbTransfer, &uDummySense, 500);
1834	if (RT_FAILURE(rc))
1835	{
1836	atapiR3CmdErrorSimple(s, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_NONE);
1837	return;
1838	}
1839	/* Select sector size based on the current data block type. */
1840	switch (aModeSenseResult[12] & 0x0f)
1841	{
1842	case 0:
1843	s->cbATAPISector = 2352;
1844	break;
1845	case 1:
1846	s->cbATAPISector = 2368;
1847	break;
1848	case 2:
1849	case 3:
1850	s->cbATAPISector = 2448;
1851	break;
1852	case 8:
1853	case 10:
1854	s->cbATAPISector = 2048;
1855	break;
1856	case 9:
1857	s->cbATAPISector = 2336;
1858	break;
1859	case 11:
1860	s->cbATAPISector = 2056;
1861	break;
1862	case 12:
1863	s->cbATAPISector = 2324;
1864	break;
1865	case 13:
1866	s->cbATAPISector = 2332;
1867	break;
1868	default:
1869	s->cbATAPISector = 0;
1870	}
1871	Log2(("%s: sector size %d\n", __FUNCTION__, s->cbATAPISector));
1872	s->cbTotalTransfer *= s->cbATAPISector;
1873	if (s->cbTotalTransfer == 0)
1874	s->uTxDir = PDMMEDIATXDIR_NONE;
1875	}
1876	}
1877	# endif
1878	atapiR3CmdBT(s);
1879	}
1880
1881	static bool atapiR3ReadSS(ATADevState *s)
1882	{
1883	PATACONTROLLER pCtl = ATADEVSTATE_2_CONTROLLER(s);
1884	int rc = VINF_SUCCESS;
1885	uint32_t cbTransfer, cSectors;
1886
1887	Assert(s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE);
1888	cbTransfer = RT_MIN(s->cbTotalTransfer, s->cbIOBuffer);
1889	cSectors = cbTransfer / s->cbATAPISector;
1890	Assert(cSectors * s->cbATAPISector <= cbTransfer);
1891	Log(("%s: %d sectors at LBA %d\n", __FUNCTION__, cSectors, s->iATAPILBA));
1892
1893	PDMCritSectLeave(&pCtl->lock);
1894
1895	STAM_PROFILE_ADV_START(&s->StatReads, r);
1896	s->Led.Asserted.s.fReading = s->Led.Actual.s.fReading = 1;
1897	switch (s->cbATAPISector)
1898	{
1899	case 2048:
1900	rc = s->pDrvMedia->pfnRead(s->pDrvMedia, (uint64_t)s->iATAPILBA * s->cbATAPISector, s->CTX_SUFF(pbIOBuffer), s->cbATAPISector * cSectors);
1901	break;
1902	case 2352:
1903	{
1904	uint8_t *pbBuf = s->CTX_SUFF(pbIOBuffer);
1905
1906	for (uint32_t i = s->iATAPILBA; i < s->iATAPILBA + cSectors; i++)
1907	{
1908	/* Sync bytes, see 4.2.3.8 CD Main Channel Block Formats */
1909	*pbBuf++ = 0x00;
1910	memset(pbBuf, 0xff, 10);
1911	pbBuf += 10;
1912	*pbBuf++ = 0x00;
1913	/* MSF */
1914	ataLBA2MSF(pbBuf, i);
1915	pbBuf += 3;
1916	pbBuf++ = 0x01; / mode 1 data */
1917	/* data */
1918	rc = s->pDrvMedia->pfnRead(s->pDrvMedia, (uint64_t)i * 2048, pbBuf, 2048);
1919	if (RT_FAILURE(rc))
1920	break;
1921	pbBuf += 2048;
1922	/**
1923	* @todo: maybe compute ECC and parity, layout is:
1924	* 2072 4 EDC
1925	* 2076 172 P parity symbols
1926	* 2248 104 Q parity symbols
1927	*/
1928	memset(pbBuf, 0, 280);
1929	pbBuf += 280;
1930	}
1931	break;
1932	}
1933	default:
1934	break;
1935	}
1936	s->Led.Actual.s.fReading = 0;
1937	STAM_PROFILE_ADV_STOP(&s->StatReads, r);
1938
1939	STAM_PROFILE_START(&pCtl->StatLockWait, a);
1940	PDMCritSectEnter(&pCtl->lock, VINF_SUCCESS);
1941	STAM_PROFILE_STOP(&pCtl->StatLockWait, a);
1942
1943	if (RT_SUCCESS(rc))
1944	{
1945	STAM_REL_COUNTER_ADD(&s->StatBytesRead, s->cbATAPISector * cSectors);
1946
1947	/* The initial buffer end value has been set up based on the total
1948	* transfer size. But the I/O buffer size limits what can actually be
1949	* done in one transfer, so set the actual value of the buffer end. */
1950	s->cbElementaryTransfer = cbTransfer;
1951	if (cbTransfer >= s->cbTotalTransfer)
1952	s->iSourceSink = ATAFN_SS_NULL;
1953	atapiR3CmdOK(s);
1954	s->iATAPILBA += cSectors;
1955	}
1956	else
1957	{
1958	if (s->cErrors++ < MAX_LOG_REL_ERRORS)
1959	LogRel(("PIIX3 ATA: LUN#%d: CD-ROM read error, %d sectors at LBA %d\n", s->iLUN, cSectors, s->iATAPILBA));
1960
1961	/*
1962	* Check if we got interrupted. We don't need to set status variables
1963	* because the request was aborted.
1964	*/
1965	if (rc != VERR_INTERRUPTED)
1966	atapiR3CmdErrorSimple(s, SCSI_SENSE_MEDIUM_ERROR, SCSI_ASC_READ_ERROR);
1967	}
1968	return false;
1969	}
1970
1971	/**
1972	* Sets the given media track type.
1973	*/
1974	static uint32_t ataR3MediumTypeSet(ATADevState *s, uint32_t MediaTrackType)
1975	{
1976	return ASMAtomicXchgU32(&s->MediaTrackType, MediaTrackType);
1977	}
1978
1979	static bool atapiR3PassthroughSS(ATADevState *s)
1980	{
1981	PATACONTROLLER pCtl = ATADEVSTATE_2_CONTROLLER(s);
1982	int rc = VINF_SUCCESS;
1983	uint8_t abATAPISense[ATAPI_SENSE_SIZE];
1984	uint32_t cbTransfer;
1985	PSTAMPROFILEADV pProf = NULL;
1986
1987	cbTransfer = RT_MIN(s->cbAtapiPassthroughTransfer, s->cbIOBuffer);
1988
1989	if (s->uTxDir == PDMMEDIATXDIR_TO_DEVICE)
1990	Log3(("ATAPI PT data write (%d): %.*Rhxs\n", cbTransfer, cbTransfer, s->CTX_SUFF(pbIOBuffer)));
1991
1992	/* Simple heuristics: if there is at least one sector of data
1993	* to transfer, it's worth updating the LEDs. */
1994	if (cbTransfer >= 2048)
1995	{
1996	if (s->uTxDir != PDMMEDIATXDIR_TO_DEVICE)
1997	{
1998	s->Led.Asserted.s.fReading = s->Led.Actual.s.fReading = 1;
1999	pProf = &s->StatReads;
2000	}
2001	else
2002	{
2003	s->Led.Asserted.s.fWriting = s->Led.Actual.s.fWriting = 1;
2004	pProf = &s->StatWrites;
2005	}
2006	}
2007
2008	PDMCritSectLeave(&pCtl->lock);
2009
2010	# if defined(LOG_ENABLED)
2011	char szBuf[1024];
2012
2013	memset(szBuf, 0, sizeof(szBuf));
2014
2015	switch (s->aATAPICmd[0])
2016	{
2017	case SCSI_MODE_SELECT_10:
2018	{
2019	size_t cbBlkDescLength = ataBE2H_U16(&s->CTX_SUFF(pbIOBuffer)[6]);
2020
2021	SCSILogModePage(szBuf, sizeof(szBuf) - 1,
2022	s->CTX_SUFF(pbIOBuffer) + 8 + cbBlkDescLength,
2023	cbTransfer - 8 - cbBlkDescLength);
2024	break;
2025	}
2026	case SCSI_SEND_CUE_SHEET:
2027	{
2028	SCSILogCueSheet(szBuf, sizeof(szBuf) - 1,
2029	s->CTX_SUFF(pbIOBuffer), cbTransfer);
2030	break;
2031	}
2032	default:
2033	break;
2034	}
2035
2036	Log2(("%s\n", szBuf));
2037	# endif
2038
2039	if (pProf) { STAM_PROFILE_ADV_START(pProf, b); }
2040	if ( cbTransfer > SCSI_MAX_BUFFER_SIZE
2041	\|\| s->cbElementaryTransfer > s->cbIOBuffer)
2042	{
2043	/* Linux accepts commands with up to 100KB of data, but expects
2044	* us to handle commands with up to 128KB of data. The usual
2045	* imbalance of powers. */
2046	uint8_t aATAPICmd[ATAPI_PACKET_SIZE];
2047	uint32_t iATAPILBA, cSectors, cReqSectors, cbCurrTX;
2048	uint8_t *pbBuf = s->CTX_SUFF(pbIOBuffer);
2049	uint32_t cSectorsMax; /*< Maximum amount of sectors to read without exceeding the I/O buffer. /
2050
2051	Assert(s->cbATAPISector);
2052	cSectorsMax = cbTransfer / s->cbATAPISector;
2053	Assert(cSectorsMax * s->cbATAPISector <= s->cbIOBuffer);
2054
2055	switch (s->aATAPICmd[0])
2056	{
2057	case SCSI_READ_10:
2058	case SCSI_WRITE_10:
2059	case SCSI_WRITE_AND_VERIFY_10:
2060	iATAPILBA = ataBE2H_U32(s->aATAPICmd + 2);
2061	cSectors = ataBE2H_U16(s->aATAPICmd + 7);
2062	break;
2063	case SCSI_READ_12:
2064	case SCSI_WRITE_12:
2065	iATAPILBA = ataBE2H_U32(s->aATAPICmd + 2);
2066	cSectors = ataBE2H_U32(s->aATAPICmd + 6);
2067	break;
2068	case SCSI_READ_CD:
2069	iATAPILBA = ataBE2H_U32(s->aATAPICmd + 2);
2070	cSectors = ataBE2H_U24(s->aATAPICmd + 6);
2071	break;
2072	case SCSI_READ_CD_MSF:
2073	iATAPILBA = ataMSF2LBA(s->aATAPICmd + 3);
2074	cSectors = ataMSF2LBA(s->aATAPICmd + 6) - iATAPILBA;
2075	break;
2076	default:
2077	AssertMsgFailed(("Don't know how to split command %#04x\n", s->aATAPICmd[0]));
2078	if (s->cErrors++ < MAX_LOG_REL_ERRORS)
2079	LogRel(("PIIX3 ATA: LUN#%d: CD-ROM passthrough split error\n", s->iLUN));
2080	atapiR3CmdErrorSimple(s, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_ILLEGAL_OPCODE);
2081	{
2082	STAM_PROFILE_START(&pCtl->StatLockWait, a);
2083	PDMCritSectEnter(&pCtl->lock, VINF_SUCCESS);
2084	STAM_PROFILE_STOP(&pCtl->StatLockWait, a);
2085	}
2086	return false;
2087	}
2088	cSectorsMax = RT_MIN(cSectorsMax, cSectors);
2089	memcpy(aATAPICmd, s->aATAPICmd, ATAPI_PACKET_SIZE);
2090	cReqSectors = 0;
2091	for (uint32_t i = cSectorsMax; i > 0; i -= cReqSectors)
2092	{
2093	if (i * s->cbATAPISector > SCSI_MAX_BUFFER_SIZE)
2094	cReqSectors = SCSI_MAX_BUFFER_SIZE / s->cbATAPISector;
2095	else
2096	cReqSectors = i;
2097	cbCurrTX = s->cbATAPISector * cReqSectors;
2098	switch (s->aATAPICmd[0])
2099	{
2100	case SCSI_READ_10:
2101	case SCSI_WRITE_10:
2102	case SCSI_WRITE_AND_VERIFY_10:
2103	ataH2BE_U32(aATAPICmd + 2, iATAPILBA);
2104	ataH2BE_U16(aATAPICmd + 7, cReqSectors);
2105	break;
2106	case SCSI_READ_12:
2107	case SCSI_WRITE_12:
2108	ataH2BE_U32(aATAPICmd + 2, iATAPILBA);
2109	ataH2BE_U32(aATAPICmd + 6, cReqSectors);
2110	break;
2111	case SCSI_READ_CD:
2112	ataH2BE_U32(aATAPICmd + 2, iATAPILBA);
2113	ataH2BE_U24(aATAPICmd + 6, cReqSectors);
2114	break;
2115	case SCSI_READ_CD_MSF:
2116	ataLBA2MSF(aATAPICmd + 3, iATAPILBA);
2117	ataLBA2MSF(aATAPICmd + 6, iATAPILBA + cReqSectors);
2118	break;
2119	}
2120	rc = s->pDrvMedia->pfnSendCmd(s->pDrvMedia, aATAPICmd, (PDMMEDIATXDIR)s->uTxDir, pbBuf, &cbCurrTX, abATAPISense, sizeof(abATAPISense), 30000 /*< @todo timeout /);
2121	if (rc != VINF_SUCCESS)
2122	break;
2123	iATAPILBA += cReqSectors;
2124	pbBuf += s->cbATAPISector * cReqSectors;
2125	}
2126
2127	if (RT_SUCCESS(rc))
2128	{
2129	/* Adjust ATAPI command for the next call. */
2130	switch (s->aATAPICmd[0])
2131	{
2132	case SCSI_READ_10:
2133	case SCSI_WRITE_10:
2134	case SCSI_WRITE_AND_VERIFY_10:
2135	ataH2BE_U32(s->aATAPICmd + 2, iATAPILBA);
2136	ataH2BE_U16(s->aATAPICmd + 7, cSectors - cSectorsMax);
2137	break;
2138	case SCSI_READ_12:
2139	case SCSI_WRITE_12:
2140	ataH2BE_U32(s->aATAPICmd + 2, iATAPILBA);
2141	ataH2BE_U32(s->aATAPICmd + 6, cSectors - cSectorsMax);
2142	break;
2143	case SCSI_READ_CD:
2144	ataH2BE_U32(s->aATAPICmd + 2, iATAPILBA);
2145	ataH2BE_U24(s->aATAPICmd + 6, cSectors - cSectorsMax);
2146	break;
2147	case SCSI_READ_CD_MSF:
2148	ataLBA2MSF(s->aATAPICmd + 3, iATAPILBA);
2149	ataLBA2MSF(s->aATAPICmd + 6, iATAPILBA + cSectors - cSectorsMax);
2150	break;
2151	default:
2152	AssertMsgFailed(("Don't know how to split command %#04x\n", s->aATAPICmd[0]));
2153	if (s->cErrors++ < MAX_LOG_REL_ERRORS)
2154	LogRel(("PIIX3 ATA: LUN#%d: CD-ROM passthrough split error\n", s->iLUN));
2155	atapiR3CmdErrorSimple(s, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_ILLEGAL_OPCODE);
2156	return false;
2157	}
2158	}
2159	}
2160	else
2161	rc = s->pDrvMedia->pfnSendCmd(s->pDrvMedia, s->aATAPICmd, (PDMMEDIATXDIR)s->uTxDir, s->CTX_SUFF(pbIOBuffer), &cbTransfer, abATAPISense, sizeof(abATAPISense), 30000 /*< @todo timeout /);
2162	if (pProf) { STAM_PROFILE_ADV_STOP(pProf, b); }
2163
2164	STAM_PROFILE_START(&pCtl->StatLockWait, a);
2165	PDMCritSectEnter(&pCtl->lock, VINF_SUCCESS);
2166	STAM_PROFILE_STOP(&pCtl->StatLockWait, a);
2167
2168	/* Update the LEDs and the read/write statistics. */
2169	if (cbTransfer >= 2048)
2170	{
2171	if (s->uTxDir != PDMMEDIATXDIR_TO_DEVICE)
2172	{
2173	s->Led.Actual.s.fReading = 0;
2174	STAM_REL_COUNTER_ADD(&s->StatBytesRead, cbTransfer);
2175	}
2176	else
2177	{
2178	s->Led.Actual.s.fWriting = 0;
2179	STAM_REL_COUNTER_ADD(&s->StatBytesWritten, cbTransfer);
2180	}
2181	}
2182
2183	if (RT_SUCCESS(rc))
2184	{
2185	/* Do post processing for certain commands. */
2186	switch (s->aATAPICmd[0])
2187	{
2188	case SCSI_SEND_CUE_SHEET:
2189	case SCSI_READ_TOC_PMA_ATIP:
2190	{
2191	if (!s->pTrackList)
2192	rc = ATAPIPassthroughTrackListCreateEmpty(&s->pTrackList);
2193
2194	if (RT_SUCCESS(rc))
2195	rc = ATAPIPassthroughTrackListUpdate(s->pTrackList, s->aATAPICmd, s->CTX_SUFF(pbIOBuffer));
2196
2197	if ( RT_FAILURE(rc)
2198	&& s->cErrors++ < MAX_LOG_REL_ERRORS)
2199	LogRel(("ATA: Error (%Rrc) while updating the tracklist during %s, burning the disc might fail\n",
2200	rc, s->aATAPICmd[0] == SCSI_SEND_CUE_SHEET ? "SEND CUE SHEET" : "READ TOC/PMA/ATIP"));
2201	break;
2202	}
2203	case SCSI_SYNCHRONIZE_CACHE:
2204	{
2205	if (s->pTrackList)
2206	ATAPIPassthroughTrackListClear(s->pTrackList);
2207	break;
2208	}
2209	}
2210
2211	if (s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE)
2212	{
2213	Assert(cbTransfer <= s->cbAtapiPassthroughTransfer);
2214	/*
2215	* Reply with the same amount of data as the real drive
2216	* but only if the command wasn't split.
2217	*/
2218	# if 0 /// @todo This destroys commands where cbTotalTransfer > cbIOBuffer
2219	if (s->cbElementaryTransfer < s->cbIOBuffer)
2220	s->cbTotalTransfer = cbTransfer;
2221	# endif
2222
2223	if ( s->aATAPICmd[0] == SCSI_INQUIRY
2224	&& s->fOverwriteInquiry)
2225	{
2226	/* Make sure that the real drive cannot be identified.
2227	* Motivation: changing the VM configuration should be as
2228	* invisible as possible to the guest. */
2229	Log3(("ATAPI PT inquiry data before (%d): %.*Rhxs\n", cbTransfer, cbTransfer, s->CTX_SUFF(pbIOBuffer)));
2230	ataR3SCSIPadStr(s->CTX_SUFF(pbIOBuffer) + 8, "VBOX", 8);
2231	ataR3SCSIPadStr(s->CTX_SUFF(pbIOBuffer) + 16, "CD-ROM", 16);
2232	ataR3SCSIPadStr(s->CTX_SUFF(pbIOBuffer) + 32, "1.0", 4);
2233	}
2234
2235	if (cbTransfer)
2236	Log3(("ATAPI PT data read (%d): %.*Rhxs\n", cbTransfer, cbTransfer, s->CTX_SUFF(pbIOBuffer)));
2237	}
2238
2239	/* The initial buffer end value has been set up based on the total
2240	* transfer size. But the I/O buffer size limits what can actually be
2241	* done in one transfer, so set the actual value of the buffer end. */
2242	s->cbElementaryTransfer = cbTransfer;
2243	if (cbTransfer >= s->cbAtapiPassthroughTransfer)
2244	{
2245	s->iSourceSink = ATAFN_SS_NULL;
2246	atapiR3CmdOK(s);
2247	}
2248	}
2249	else
2250	{
2251	if (s->cErrors < MAX_LOG_REL_ERRORS)
2252	{
2253	uint8_t u8Cmd = s->aATAPICmd[0];
2254	do
2255	{
2256	/* don't log superfluous errors */
2257	if ( rc == VERR_DEV_IO_ERROR
2258	&& ( u8Cmd == SCSI_TEST_UNIT_READY
2259	\|\| u8Cmd == SCSI_READ_CAPACITY
2260	\|\| u8Cmd == SCSI_READ_DVD_STRUCTURE
2261	\|\| u8Cmd == SCSI_READ_TOC_PMA_ATIP))
2262	break;
2263	s->cErrors++;
2264	LogRel(("PIIX3 ATA: LUN#%d: CD-ROM passthrough cmd=%#04x sense=%d ASC=%#02x ASCQ=%#02x %Rrc\n",
2265	s->iLUN, u8Cmd, abATAPISense[2] & 0x0f, abATAPISense[12], abATAPISense[13], rc));
2266	} while (0);
2267	}
2268	atapiR3CmdError(s, abATAPISense, sizeof(abATAPISense));
2269	}
2270	return false;
2271	}
2272
2273	/** @todo Revise ASAP. */
2274	static bool atapiR3ReadDVDStructureSS(ATADevState *s)
2275	{
2276	uint8_t *buf = s->CTX_SUFF(pbIOBuffer);
2277	int media = s->aATAPICmd[1];
2278	int format = s->aATAPICmd[7];
2279
2280	uint16_t max_len = ataBE2H_U16(&s->aATAPICmd[8]);
2281
2282	memset(buf, 0, max_len);
2283
2284	switch (format) {
2285	case 0x00:
2286	case 0x01:
2287	case 0x02:
2288	case 0x03:
2289	case 0x04:
2290	case 0x05:
2291	case 0x06:
2292	case 0x07:
2293	case 0x08:
2294	case 0x09:
2295	case 0x0a:
2296	case 0x0b:
2297	case 0x0c:
2298	case 0x0d:
2299	case 0x0e:
2300	case 0x0f:
2301	case 0x10:
2302	case 0x11:
2303	case 0x30:
2304	case 0x31:
2305	case 0xff:
2306	if (media == 0)
2307	{
2308	int uASC = SCSI_ASC_NONE;
2309
2310	switch (format)
2311	{
2312	case 0x0: /* Physical format information */
2313	{
2314	int layer = s->aATAPICmd[6];
2315	uint64_t total_sectors;
2316
2317	if (layer != 0)
2318	{
2319	uASC = -SCSI_ASC_INV_FIELD_IN_CMD_PACKET;
2320	break;
2321	}
2322
2323	total_sectors = s->cTotalSectors;
2324	total_sectors >>= 2;
2325	if (total_sectors == 0)
2326	{
2327	uASC = -SCSI_ASC_MEDIUM_NOT_PRESENT;
2328	break;
2329	}
2330
2331	buf[4] = 1; /* DVD-ROM, part version 1 */
2332	buf[5] = 0xf; /* 120mm disc, minimum rate unspecified */
2333	buf[6] = 1; /* one layer, read-only (per MMC-2 spec) */
2334	buf[7] = 0; /* default densities */
2335
2336	/* FIXME: 0x30000 per spec? */
2337	ataH2BE_U32(buf + 8, 0); /* start sector */
2338	ataH2BE_U32(buf + 12, total_sectors - 1); /* end sector */
2339	ataH2BE_U32(buf + 16, total_sectors - 1); /* l0 end sector */
2340
2341	/* Size of buffer, not including 2 byte size field */
2342	ataH2BE_U32(&buf[0], 2048 + 2);
2343
2344	/* 2k data + 4 byte header */
2345	uASC = (2048 + 4);
2346	break;
2347	}
2348	case 0x01: /* DVD copyright information */
2349	buf[4] = 0; /* no copyright data */
2350	buf[5] = 0; /* no region restrictions */
2351
2352	/* Size of buffer, not including 2 byte size field */
2353	ataH2BE_U16(buf, 4 + 2);
2354
2355	/* 4 byte header + 4 byte data */
2356	uASC = (4 + 4);
2357	break;
2358
2359	case 0x03: /* BCA information - invalid field for no BCA info */
2360	uASC = -SCSI_ASC_INV_FIELD_IN_CMD_PACKET;
2361	break;
2362
2363	case 0x04: /* DVD disc manufacturing information */
2364	/* Size of buffer, not including 2 byte size field */
2365	ataH2BE_U16(buf, 2048 + 2);
2366
2367	/* 2k data + 4 byte header */
2368	uASC = (2048 + 4);
2369	break;
2370	case 0xff:
2371	/*
2372	* This lists all the command capabilities above. Add new ones
2373	* in order and update the length and buffer return values.
2374	*/
2375
2376	buf[4] = 0x00; /* Physical format */
2377	buf[5] = 0x40; /* Not writable, is readable */
2378	ataH2BE_U16((buf + 6), 2048 + 4);
2379
2380	buf[8] = 0x01; /* Copyright info */
2381	buf[9] = 0x40; /* Not writable, is readable */
2382	ataH2BE_U16((buf + 10), 4 + 4);
2383
2384	buf[12] = 0x03; /* BCA info */
2385	buf[13] = 0x40; /* Not writable, is readable */
2386	ataH2BE_U16((buf + 14), 188 + 4);
2387
2388	buf[16] = 0x04; /* Manufacturing info */
2389	buf[17] = 0x40; /* Not writable, is readable */
2390	ataH2BE_U16((buf + 18), 2048 + 4);
2391
2392	/* Size of buffer, not including 2 byte size field */
2393	ataH2BE_U16(buf, 16 + 2);
2394
2395	/* data written + 4 byte header */
2396	uASC = (16 + 4);
2397	break;
2398	default: /* TODO: formats beyond DVD-ROM requires */
2399	uASC = -SCSI_ASC_INV_FIELD_IN_CMD_PACKET;
2400	}
2401
2402	if (uASC < 0)
2403	{
2404	s->iSourceSink = ATAFN_SS_NULL;
2405	atapiR3CmdErrorSimple(s, SCSI_SENSE_ILLEGAL_REQUEST, -uASC);
2406	return false;
2407	}
2408	break;
2409	}
2410	/* TODO: BD support, fall through for now */
2411
2412	/* Generic disk structures */
2413	case 0x80: /* TODO: AACS volume identifier */
2414	case 0x81: /* TODO: AACS media serial number */
2415	case 0x82: /* TODO: AACS media identifier */
2416	case 0x83: /* TODO: AACS media key block */
2417	case 0x90: /* TODO: List of recognized format layers */
2418	case 0xc0: /* TODO: Write protection status */
2419	default:
2420	s->iSourceSink = ATAFN_SS_NULL;
2421	atapiR3CmdErrorSimple(s, SCSI_SENSE_ILLEGAL_REQUEST,
2422	SCSI_ASC_INV_FIELD_IN_CMD_PACKET);
2423	return false;
2424	}
2425
2426	s->iSourceSink = ATAFN_SS_NULL;
2427	atapiR3CmdOK(s);
2428	return false;
2429	}
2430
2431	static bool atapiR3ReadSectors(ATADevState *s, uint32_t iATAPILBA, uint32_t cSectors, uint32_t cbSector)
2432	{
2433	Assert(cSectors > 0);
2434	s->iATAPILBA = iATAPILBA;
2435	s->cbATAPISector = cbSector;
2436	ataR3StartTransfer(s, cSectors * cbSector, PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_ATAPI_CMD, ATAFN_SS_ATAPI_READ, true);
2437	return false;
2438	}
2439
2440
2441	static bool atapiR3ReadCapacitySS(ATADevState *s)
2442	{
2443	uint8_t *pbBuf = s->CTX_SUFF(pbIOBuffer);
2444
2445	Assert(s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE);
2446	Assert(s->cbElementaryTransfer <= 8);
2447	ataH2BE_U32(pbBuf, s->cTotalSectors - 1);
2448	ataH2BE_U32(pbBuf + 4, 2048);
2449	s->iSourceSink = ATAFN_SS_NULL;
2450	atapiR3CmdOK(s);
2451	return false;
2452	}
2453
2454
2455	static bool atapiR3ReadDiscInformationSS(ATADevState *s)
2456	{
2457	uint8_t *pbBuf = s->CTX_SUFF(pbIOBuffer);
2458
2459	Assert(s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE);
2460	Assert(s->cbElementaryTransfer <= 34);
2461	memset(pbBuf, '\0', 34);
2462	ataH2BE_U16(pbBuf, 32);
2463	pbBuf[2] = (0 << 4) \| (3 << 2) \| (2 << 0); /* not erasable, complete session, complete disc */
2464	pbBuf[3] = 1; /* number of first track */
2465	pbBuf[4] = 1; /* number of sessions (LSB) */
2466	pbBuf[5] = 1; /* first track number in last session (LSB) */
2467	pbBuf[6] = 1; /* last track number in last session (LSB) */
2468	pbBuf[7] = (0 << 7) \| (0 << 6) \| (1 << 5) \| (0 << 2) \| (0 << 0); /* disc id not valid, disc bar code not valid, unrestricted use, not dirty, not RW medium */
2469	pbBuf[8] = 0; /* disc type = CD-ROM */
2470	pbBuf[9] = 0; /* number of sessions (MSB) */
2471	pbBuf[10] = 0; /* number of sessions (MSB) */
2472	pbBuf[11] = 0; /* number of sessions (MSB) */
2473	ataH2BE_U32(pbBuf + 16, 0x00ffffff); /* last session lead-in start time is not available */
2474	ataH2BE_U32(pbBuf + 20, 0x00ffffff); /* last possible start time for lead-out is not available */
2475	s->iSourceSink = ATAFN_SS_NULL;
2476	atapiR3CmdOK(s);
2477	return false;
2478	}
2479
2480
2481	static bool atapiR3ReadTrackInformationSS(ATADevState *s)
2482	{
2483	uint8_t *pbBuf = s->CTX_SUFF(pbIOBuffer);
2484
2485	Assert(s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE);
2486	Assert(s->cbElementaryTransfer <= 36);
2487	/* Accept address/number type of 1 only, and only track 1 exists. */
2488	if ((s->aATAPICmd[1] & 0x03) != 1 \|\| ataBE2H_U32(&s->aATAPICmd[2]) != 1)
2489	{
2490	atapiR3CmdErrorSimple(s, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_INV_FIELD_IN_CMD_PACKET);
2491	return false;
2492	}
2493	memset(pbBuf, '\0', 36);
2494	ataH2BE_U16(pbBuf, 34);
2495	pbBuf[2] = 1; /* track number (LSB) */
2496	pbBuf[3] = 1; /* session number (LSB) */
2497	pbBuf[5] = (0 << 5) \| (0 << 4) \| (4 << 0); /* not damaged, primary copy, data track */
2498	pbBuf[6] = (0 << 7) \| (0 << 6) \| (0 << 5) \| (0 << 6) \| (1 << 0); /* not reserved track, not blank, not packet writing, not fixed packet, data mode 1 */
2499	pbBuf[7] = (0 << 1) \| (0 << 0); /* last recorded address not valid, next recordable address not valid */
2500	ataH2BE_U32(pbBuf + 8, 0); /* track start address is 0 */
2501	ataH2BE_U32(pbBuf + 24, s->cTotalSectors); /* track size */
2502	pbBuf[32] = 0; /* track number (MSB) */
2503	pbBuf[33] = 0; /* session number (MSB) */
2504	s->iSourceSink = ATAFN_SS_NULL;
2505	atapiR3CmdOK(s);
2506	return false;
2507	}
2508
2509	static uint32_t atapiR3GetConfigurationFillFeatureListProfiles(ATADevState s, uint8_t pbBuf, size_t cbBuf)
2510	{
2511	if (cbBuf < 3*4)
2512	return 0;
2513
2514	ataH2BE_U16(pbBuf, 0x0); /* feature 0: list of profiles supported */
2515	pbBuf[2] = (0 << 2) \| (1 << 1) \| (1 << 0); /* version 0, persistent, current */
2516	pbBuf[3] = 8; /* additional bytes for profiles */
2517	/* The MMC-3 spec says that DVD-ROM read capability should be reported
2518	* before CD-ROM read capability. */
2519	ataH2BE_U16(pbBuf + 4, 0x10); /* profile: read-only DVD */
2520	pbBuf[6] = (0 << 0); /* NOT current profile */
2521	ataH2BE_U16(pbBuf + 8, 0x08); /* profile: read only CD */
2522	pbBuf[10] = (1 << 0); /* current profile */
2523
2524	return 34; / Header + 2 profiles entries */
2525	}
2526
2527	static uint32_t atapiR3GetConfigurationFillFeatureCore(ATADevState s, uint8_t pbBuf, size_t cbBuf)
2528	{
2529	if (cbBuf < 12)
2530	return 0;
2531
2532	ataH2BE_U16(pbBuf, 0x1); /* feature 0001h: Core Feature */
2533	pbBuf[2] = (0x2 << 2) \| RT_BIT(1) \| RT_BIT(0); /* Version \| Persistent \| Current */
2534	pbBuf[3] = 8; /* Additional length */
2535	ataH2BE_U16(pbBuf + 4, 0x00000002); /* Physical interface ATAPI. */
2536	pbBuf[8] = RT_BIT(0); /* DBE */
2537	/* Rest is reserved. */
2538
2539	return 12;
2540	}
2541
2542	static uint32_t atapiR3GetConfigurationFillFeatureMorphing(ATADevState s, uint8_t pbBuf, size_t cbBuf)
2543	{
2544	if (cbBuf < 8)
2545	return 0;
2546
2547	ataH2BE_U16(pbBuf, 0x2); /* feature 0002h: Morphing Feature */
2548	pbBuf[2] = (0x1 << 2) \| RT_BIT(1) \| RT_BIT(0); /* Version \| Persistent \| Current */
2549	pbBuf[3] = 4; /* Additional length */
2550	pbBuf[4] = RT_BIT(1) \| 0x0; /* OCEvent \| !ASYNC */
2551	/* Rest is reserved. */
2552
2553	return 8;
2554	}
2555
2556	static uint32_t atapiR3GetConfigurationFillFeatureRemovableMedium(ATADevState s, uint8_t pbBuf, size_t cbBuf)
2557	{
2558	if (cbBuf < 8)
2559	return 0;
2560
2561	ataH2BE_U16(pbBuf, 0x3); /* feature 0003h: Removable Medium Feature */
2562	pbBuf[2] = (0x2 << 2) \| RT_BIT(1) \| RT_BIT(0); /* Version \| Persistent \| Current */
2563	pbBuf[3] = 4; /* Additional length */
2564	/* Tray type loading \| Load \| Eject \| !Pvnt Jmpr \| !DBML \| Lock */
2565	pbBuf[4] = (0x2 << 5) \| RT_BIT(4) \| RT_BIT(3) \| (0x0 << 2) \| (0x0 << 1) \| RT_BIT(0);
2566	/* Rest is reserved. */
2567
2568	return 8;
2569	}
2570
2571	static uint32_t atapiR3GetConfigurationFillFeatureRandomReadable (ATADevState s, uint8_t pbBuf, size_t cbBuf)
2572	{
2573	if (cbBuf < 12)
2574	return 0;
2575
2576	ataH2BE_U16(pbBuf, 0x10); /* feature 0010h: Random Readable Feature */
2577	pbBuf[2] = (0x0 << 2) \| RT_BIT(1) \| RT_BIT(0); /* Version \| Persistent \| Current */
2578	pbBuf[3] = 8; /* Additional length */
2579	ataH2BE_U32(pbBuf + 4, 2048); /* Logical block size. */
2580	ataH2BE_U16(pbBuf + 8, 0x10); /* Blocking (0x10 for DVD, CD is not defined). */
2581	pbBuf[10] = 0; /* PP not present */
2582	/* Rest is reserved. */
2583
2584	return 12;
2585	}
2586
2587	static uint32_t atapiR3GetConfigurationFillFeatureCDRead(ATADevState s, uint8_t pbBuf, size_t cbBuf)
2588	{
2589	if (cbBuf < 8)
2590	return 0;
2591
2592	ataH2BE_U16(pbBuf, 0x1e); /* feature 001Eh: CD Read Feature */
2593	pbBuf[2] = (0x2 << 2) \| RT_BIT(1) \| RT_BIT(0); /* Version \| Persistent \| Current */
2594	pbBuf[3] = 0; /* Additional length */
2595	pbBuf[4] = (0x0 << 7) \| (0x0 << 1) \| 0x0; /* !DAP \| !C2-Flags \| !CD-Text. */
2596	/* Rest is reserved. */
2597
2598	return 8;
2599	}
2600
2601	static uint32_t atapiR3GetConfigurationFillFeaturePowerManagement(ATADevState s, uint8_t pbBuf, size_t cbBuf)
2602	{
2603	if (cbBuf < 4)
2604	return 0;
2605
2606	ataH2BE_U16(pbBuf, 0x100); /* feature 0100h: Power Management Feature */
2607	pbBuf[2] = (0x0 << 2) \| RT_BIT(1) \| RT_BIT(0); /* Version \| Persistent \| Current */
2608	pbBuf[3] = 0; /* Additional length */
2609
2610	return 4;
2611	}
2612
2613	static uint32_t atapiR3GetConfigurationFillFeatureTimeout(ATADevState s, uint8_t pbBuf, size_t cbBuf)
2614	{
2615	if (cbBuf < 8)
2616	return 0;
2617
2618	ataH2BE_U16(pbBuf, 0x105); /* feature 0105h: Timeout Feature */
2619	pbBuf[2] = (0x0 << 2) \| RT_BIT(1) \| RT_BIT(0); /* Version \| Persistent \| Current */
2620	pbBuf[3] = 4; /* Additional length */
2621	pbBuf[4] = 0x0; /* !Group3 */
2622
2623	return 8;
2624	}
2625
2626	static bool atapiR3GetConfigurationSS(ATADevState *s)
2627	{
2628	uint8_t *pbBuf = s->CTX_SUFF(pbIOBuffer);
2629	uint32_t cbBuf = s->cbIOBuffer;
2630	uint32_t cbCopied = 0;
2631	uint16_t u16Sfn = ataBE2H_U16(&s->aATAPICmd[2]);
2632
2633	Assert(s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE);
2634	Assert(s->cbElementaryTransfer <= 80);
2635	/* Accept valid request types only, and only starting feature 0. */
2636	if ((s->aATAPICmd[1] & 0x03) == 3 \|\| u16Sfn != 0)
2637	{
2638	atapiR3CmdErrorSimple(s, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_INV_FIELD_IN_CMD_PACKET);
2639	return false;
2640	}
2641	memset(pbBuf, '\0', cbBuf);
2642	/** @todo implement switching between CD-ROM and DVD-ROM profile (the only
2643	* way to differentiate them right now is based on the image size). */
2644	if (s->cTotalSectors)
2645	ataH2BE_U16(pbBuf + 6, 0x08); /* current profile: read-only CD */
2646	else
2647	ataH2BE_U16(pbBuf + 6, 0x00); /* current profile: none -> no media */
2648	cbBuf -= 8;
2649	pbBuf += 8;
2650
2651	cbCopied = atapiR3GetConfigurationFillFeatureListProfiles(s, pbBuf, cbBuf);
2652	cbBuf -= cbCopied;
2653	pbBuf += cbCopied;
2654
2655	cbCopied = atapiR3GetConfigurationFillFeatureCore(s, pbBuf, cbBuf);
2656	cbBuf -= cbCopied;
2657	pbBuf += cbCopied;
2658
2659	cbCopied = atapiR3GetConfigurationFillFeatureMorphing(s, pbBuf, cbBuf);
2660	cbBuf -= cbCopied;
2661	pbBuf += cbCopied;
2662
2663	cbCopied = atapiR3GetConfigurationFillFeatureRemovableMedium(s, pbBuf, cbBuf);
2664	cbBuf -= cbCopied;
2665	pbBuf += cbCopied;
2666
2667	cbCopied = atapiR3GetConfigurationFillFeatureRandomReadable (s, pbBuf, cbBuf);
2668	cbBuf -= cbCopied;
2669	pbBuf += cbCopied;
2670
2671	cbCopied = atapiR3GetConfigurationFillFeatureCDRead(s, pbBuf, cbBuf);
2672	cbBuf -= cbCopied;
2673	pbBuf += cbCopied;
2674
2675	cbCopied = atapiR3GetConfigurationFillFeaturePowerManagement(s, pbBuf, cbBuf);
2676	cbBuf -= cbCopied;
2677	pbBuf += cbCopied;
2678
2679	cbCopied = atapiR3GetConfigurationFillFeatureTimeout(s, pbBuf, cbBuf);
2680	cbBuf -= cbCopied;
2681	pbBuf += cbCopied;
2682
2683	/* Set data length now - the field is not included in the final length. */
2684	ataH2BE_U32(s->CTX_SUFF(pbIOBuffer), s->cbIOBuffer - cbBuf - 4);
2685
2686	/* Other profiles we might want to add in the future: 0x40 (BD-ROM) and 0x50 (HDDVD-ROM) */
2687	s->iSourceSink = ATAFN_SS_NULL;
2688	atapiR3CmdOK(s);
2689	return false;
2690	}
2691
2692
2693	static bool atapiR3GetEventStatusNotificationSS(ATADevState *s)
2694	{
2695	uint8_t *pbBuf = s->CTX_SUFF(pbIOBuffer);
2696
2697	Assert(s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE);
2698	Assert(s->cbElementaryTransfer <= 8);
2699
2700	if (!(s->aATAPICmd[1] & 1))
2701	{
2702	/* no asynchronous operation supported */
2703	atapiR3CmdErrorSimple(s, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_INV_FIELD_IN_CMD_PACKET);
2704	return false;
2705	}
2706
2707	uint32_t OldStatus, NewStatus;
2708	do
2709	{
2710	OldStatus = ASMAtomicReadU32(&s->MediaEventStatus);
2711	NewStatus = ATA_EVENT_STATUS_UNCHANGED;
2712	switch (OldStatus)
2713	{
2714	case ATA_EVENT_STATUS_MEDIA_NEW:
2715	/* mount */
2716	ataH2BE_U16(pbBuf + 0, 6);
2717	pbBuf[2] = 0x04; /* media */
2718	pbBuf[3] = 0x5e; /* supported = busy\|media\|external\|power\|operational */
2719	pbBuf[4] = 0x02; /* new medium */
2720	pbBuf[5] = 0x02; /* medium present / door closed */
2721	pbBuf[6] = 0x00;
2722	pbBuf[7] = 0x00;
2723	break;
2724
2725	case ATA_EVENT_STATUS_MEDIA_CHANGED:
2726	case ATA_EVENT_STATUS_MEDIA_REMOVED:
2727	/* umount */
2728	ataH2BE_U16(pbBuf + 0, 6);
2729	pbBuf[2] = 0x04; /* media */
2730	pbBuf[3] = 0x5e; /* supported = busy\|media\|external\|power\|operational */
2731	pbBuf[4] = 0x03; /* media removal */
2732	pbBuf[5] = 0x00; /* medium absent / door closed */
2733	pbBuf[6] = 0x00;
2734	pbBuf[7] = 0x00;
2735	if (OldStatus == ATA_EVENT_STATUS_MEDIA_CHANGED)
2736	NewStatus = ATA_EVENT_STATUS_MEDIA_NEW;
2737	break;
2738
2739	case ATA_EVENT_STATUS_MEDIA_EJECT_REQUESTED: /* currently unused */
2740	ataH2BE_U16(pbBuf + 0, 6);
2741	pbBuf[2] = 0x04; /* media */
2742	pbBuf[3] = 0x5e; /* supported = busy\|media\|external\|power\|operational */
2743	pbBuf[4] = 0x01; /* eject requested (eject button pressed) */
2744	pbBuf[5] = 0x02; /* medium present / door closed */
2745	pbBuf[6] = 0x00;
2746	pbBuf[7] = 0x00;
2747	break;
2748
2749	case ATA_EVENT_STATUS_UNCHANGED:
2750	default:
2751	ataH2BE_U16(pbBuf + 0, 6);
2752	pbBuf[2] = 0x01; /* operational change request / notification */
2753	pbBuf[3] = 0x5e; /* supported = busy\|media\|external\|power\|operational */
2754	pbBuf[4] = 0x00;
2755	pbBuf[5] = 0x00;
2756	pbBuf[6] = 0x00;
2757	pbBuf[7] = 0x00;
2758	break;
2759	}
2760	} while (!ASMAtomicCmpXchgU32(&s->MediaEventStatus, NewStatus, OldStatus));
2761
2762	s->iSourceSink = ATAFN_SS_NULL;
2763	atapiR3CmdOK(s);
2764	return false;
2765	}
2766
2767
2768	static bool atapiR3InquirySS(ATADevState *s)
2769	{
2770	uint8_t *pbBuf = s->CTX_SUFF(pbIOBuffer);
2771
2772	Assert(s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE);
2773	Assert(s->cbElementaryTransfer <= 36);
2774	pbBuf[0] = 0x05; /* CD-ROM */
2775	pbBuf[1] = 0x80; /* removable */
2776	# if 1/ndef VBOX/ /** @todo implement MESN + AENC. (async notification on removal and stuff.) */
2777	pbBuf[2] = 0x00; /* ISO */
2778	pbBuf[3] = 0x21; /* ATAPI-2 (XXX: put ATAPI-4 ?) */
2779	# else
2780	pbBuf[2] = 0x00; /* ISO */
2781	pbBuf[3] = 0x91; /* format 1, MESN=1, AENC=9 ??? */
2782	# endif
2783	pbBuf[4] = 31; /* additional length */
2784	pbBuf[5] = 0; /* reserved */
2785	pbBuf[6] = 0; /* reserved */
2786	pbBuf[7] = 0; /* reserved */
2787	ataR3SCSIPadStr(pbBuf + 8, s->szInquiryVendorId, 8);
2788	ataR3SCSIPadStr(pbBuf + 16, s->szInquiryProductId, 16);
2789	ataR3SCSIPadStr(pbBuf + 32, s->szInquiryRevision, 4);
2790	s->iSourceSink = ATAFN_SS_NULL;
2791	atapiR3CmdOK(s);
2792	return false;
2793	}
2794
2795
2796	static bool atapiR3ModeSenseErrorRecoverySS(ATADevState *s)
2797	{
2798	uint8_t *pbBuf = s->CTX_SUFF(pbIOBuffer);
2799
2800	Assert(s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE);
2801	Assert(s->cbElementaryTransfer <= 16);
2802	ataH2BE_U16(&pbBuf[0], 16 + 6);
2803	pbBuf[2] = (uint8_t)s->MediaTrackType;
2804	pbBuf[3] = 0;
2805	pbBuf[4] = 0;
2806	pbBuf[5] = 0;
2807	pbBuf[6] = 0;
2808	pbBuf[7] = 0;
2809
2810	pbBuf[8] = 0x01;
2811	pbBuf[9] = 0x06;
2812	pbBuf[10] = 0x00; /* Maximum error recovery */
2813	pbBuf[11] = 0x05; /* 5 retries */
2814	pbBuf[12] = 0x00;
2815	pbBuf[13] = 0x00;
2816	pbBuf[14] = 0x00;
2817	pbBuf[15] = 0x00;
2818	s->iSourceSink = ATAFN_SS_NULL;
2819	atapiR3CmdOK(s);
2820	return false;
2821	}
2822
2823
2824	static bool atapiR3ModeSenseCDStatusSS(ATADevState *s)
2825	{
2826	uint8_t *pbBuf = s->CTX_SUFF(pbIOBuffer);
2827
2828	Assert(s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE);
2829	Assert(s->cbElementaryTransfer <= 40);
2830	ataH2BE_U16(&pbBuf[0], 38);
2831	pbBuf[2] = (uint8_t)s->MediaTrackType;
2832	pbBuf[3] = 0;
2833	pbBuf[4] = 0;
2834	pbBuf[5] = 0;
2835	pbBuf[6] = 0;
2836	pbBuf[7] = 0;
2837
2838	pbBuf[8] = 0x2a;
2839	pbBuf[9] = 30; /* page length */
2840	pbBuf[10] = 0x08; /* DVD-ROM read support */
2841	pbBuf[11] = 0x00; /* no write support */
2842	/* The following claims we support audio play. This is obviously false,
2843	* but the Linux generic CDROM support makes many features depend on this
2844	* capability. If it's not set, this causes many things to be disabled. */
2845	pbBuf[12] = 0x71; /* multisession support, mode 2 form 1/2 support, audio play */
2846	pbBuf[13] = 0x00; /* no subchannel reads supported */
2847	pbBuf[14] = (1 << 0) \| (1 << 3) \| (1 << 5); /* lock supported, eject supported, tray type loading mechanism */
2848	if (s->pDrvMount->pfnIsLocked(s->pDrvMount))
2849	pbBuf[14] \|= 1 << 1; /* report lock state */
2850	pbBuf[15] = 0; /* no subchannel reads supported, no separate audio volume control, no changer etc. */
2851	ataH2BE_U16(&pbBuf[16], 5632); /* (obsolete) claim 32x speed support */
2852	ataH2BE_U16(&pbBuf[18], 2); /* number of audio volume levels */
2853	ataH2BE_U16(&pbBuf[20], s->cbIOBuffer / _1K); /* buffer size supported in Kbyte */
2854	ataH2BE_U16(&pbBuf[22], 5632); /* (obsolete) current read speed 32x */
2855	pbBuf[24] = 0; /* reserved */
2856	pbBuf[25] = 0; /* reserved for digital audio (see idx 15) */
2857	ataH2BE_U16(&pbBuf[26], 0); /* (obsolete) maximum write speed */
2858	ataH2BE_U16(&pbBuf[28], 0); /* (obsolete) current write speed */
2859	ataH2BE_U16(&pbBuf[30], 0); /* copy management revision supported 0=no CSS */
2860	pbBuf[32] = 0; /* reserved */
2861	pbBuf[33] = 0; /* reserved */
2862	pbBuf[34] = 0; /* reserved */
2863	pbBuf[35] = 1; /* rotation control CAV */
2864	ataH2BE_U16(&pbBuf[36], 0); /* current write speed */
2865	ataH2BE_U16(&pbBuf[38], 0); /* number of write speed performance descriptors */
2866	s->iSourceSink = ATAFN_SS_NULL;
2867	atapiR3CmdOK(s);
2868	return false;
2869	}
2870
2871
2872	static bool atapiR3RequestSenseSS(ATADevState *s)
2873	{
2874	uint8_t *pbBuf = s->CTX_SUFF(pbIOBuffer);
2875
2876	Assert(s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE);
2877	memset(pbBuf, '\0', s->cbElementaryTransfer);
2878	memcpy(pbBuf, s->abATAPISense, RT_MIN(s->cbElementaryTransfer, sizeof(s->abATAPISense)));
2879	s->iSourceSink = ATAFN_SS_NULL;
2880	atapiR3CmdOK(s);
2881	return false;
2882	}
2883
2884
2885	static bool atapiR3MechanismStatusSS(ATADevState *s)
2886	{
2887	uint8_t *pbBuf = s->CTX_SUFF(pbIOBuffer);
2888
2889	Assert(s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE);
2890	Assert(s->cbElementaryTransfer <= 8);
2891	ataH2BE_U16(pbBuf, 0);
2892	/* no current LBA */
2893	pbBuf[2] = 0;
2894	pbBuf[3] = 0;
2895	pbBuf[4] = 0;
2896	pbBuf[5] = 1;
2897	ataH2BE_U16(pbBuf + 6, 0);
2898	s->iSourceSink = ATAFN_SS_NULL;
2899	atapiR3CmdOK(s);
2900	return false;
2901	}
2902
2903
2904	static bool atapiR3ReadTOCNormalSS(ATADevState *s)
2905	{
2906	uint8_t pbBuf = s->CTX_SUFF(pbIOBuffer), q, iStartTrack;
2907	bool fMSF;
2908	uint32_t cbSize;
2909
2910	Assert(s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE);
2911	fMSF = (s->aATAPICmd[1] >> 1) & 1;
2912	iStartTrack = s->aATAPICmd[6];
2913	if (iStartTrack > 1 && iStartTrack != 0xaa)
2914	{
2915	atapiR3CmdErrorSimple(s, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_INV_FIELD_IN_CMD_PACKET);
2916	return false;
2917	}
2918	q = pbBuf + 2;
2919	q++ = 1; / first session */
2920	q++ = 1; / last session */
2921	if (iStartTrack <= 1)
2922	{
2923	q++ = 0; / reserved */
2924	q++ = 0x14; / ADR, control */
2925	q++ = 1; / track number */
2926	q++ = 0; / reserved */
2927	if (fMSF)
2928	{
2929	q++ = 0; / reserved */
2930	ataLBA2MSF(q, 0);
2931	q += 3;
2932	}
2933	else
2934	{
2935	/* sector 0 */
2936	ataH2BE_U32(q, 0);
2937	q += 4;
2938	}
2939	}
2940	/* lead out track */
2941	q++ = 0; / reserved */
2942	q++ = 0x14; / ADR, control */
2943	q++ = 0xaa; / track number */
2944	q++ = 0; / reserved */
2945	if (fMSF)
2946	{
2947	q++ = 0; / reserved */
2948	ataLBA2MSF(q, s->cTotalSectors);
2949	q += 3;
2950	}
2951	else
2952	{
2953	ataH2BE_U32(q, s->cTotalSectors);
2954	q += 4;
2955	}
2956	cbSize = q - pbBuf;
2957	ataH2BE_U16(pbBuf, cbSize - 2);
2958	if (cbSize < s->cbTotalTransfer)
2959	s->cbTotalTransfer = cbSize;
2960	s->iSourceSink = ATAFN_SS_NULL;
2961	atapiR3CmdOK(s);
2962	return false;
2963	}
2964
2965
2966	static bool atapiR3ReadTOCMultiSS(ATADevState *s)
2967	{
2968	uint8_t *pbBuf = s->CTX_SUFF(pbIOBuffer);
2969	bool fMSF;
2970
2971	Assert(s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE);
2972	Assert(s->cbElementaryTransfer <= 12);
2973	fMSF = (s->aATAPICmd[1] >> 1) & 1;
2974	/* multi session: only a single session defined */
2975	/** @todo double-check this stuff against what a real drive says for a CD-ROM (not a CD-R) with only a single data session. Maybe solve the problem with "cdrdao read-toc" not being able to figure out whether numbers are in BCD or hex. */
2976	memset(pbBuf, 0, 12);
2977	pbBuf[1] = 0x0a;
2978	pbBuf[2] = 0x01;
2979	pbBuf[3] = 0x01;
2980	pbBuf[5] = 0x14; /* ADR, control */
2981	pbBuf[6] = 1; /* first track in last complete session */
2982	if (fMSF)
2983	{
2984	pbBuf[8] = 0; /* reserved */
2985	ataLBA2MSF(&pbBuf[9], 0);
2986	}
2987	else
2988	{
2989	/* sector 0 */
2990	ataH2BE_U32(pbBuf + 8, 0);
2991	}
2992	s->iSourceSink = ATAFN_SS_NULL;
2993	atapiR3CmdOK(s);
2994	return false;
2995	}
2996
2997
2998	static bool atapiR3ReadTOCRawSS(ATADevState *s)
2999	{
3000	uint8_t pbBuf = s->CTX_SUFF(pbIOBuffer), q, iStartTrack;
3001	bool fMSF;
3002	uint32_t cbSize;
3003
3004	Assert(s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE);
3005	fMSF = (s->aATAPICmd[1] >> 1) & 1;
3006	iStartTrack = s->aATAPICmd[6];
3007
3008	q = pbBuf + 2;
3009	q++ = 1; / first session */
3010	q++ = 1; / last session */
3011
3012	q++ = 1; / session number */
3013	q++ = 0x14; / data track */
3014	q++ = 0; / track number */
3015	q++ = 0xa0; / first track in program area */
3016	q++ = 0; / min */
3017	q++ = 0; / sec */
3018	q++ = 0; / frame */
3019	*q++ = 0;
3020	q++ = 1; / first track */
3021	q++ = 0x00; / disk type CD-DA or CD data */
3022	*q++ = 0;
3023
3024	q++ = 1; / session number */
3025	q++ = 0x14; / data track */
3026	q++ = 0; / track number */
3027	q++ = 0xa1; / last track in program area */
3028	q++ = 0; / min */
3029	q++ = 0; / sec */
3030	q++ = 0; / frame */
3031	*q++ = 0;
3032	q++ = 1; / last track */
3033	*q++ = 0;
3034	*q++ = 0;
3035
3036	q++ = 1; / session number */
3037	q++ = 0x14; / data track */
3038	q++ = 0; / track number */
3039	q++ = 0xa2; / lead-out */
3040	q++ = 0; / min */
3041	q++ = 0; / sec */
3042	q++ = 0; / frame */
3043	if (fMSF)
3044	{
3045	q++ = 0; / reserved */
3046	ataLBA2MSF(q, s->cTotalSectors);
3047	q += 3;
3048	}
3049	else
3050	{
3051	ataH2BE_U32(q, s->cTotalSectors);
3052	q += 4;
3053	}
3054
3055	q++ = 1; / session number */
3056	q++ = 0x14; / ADR, control */
3057	q++ = 0; / track number */
3058	q++ = 1; / point */
3059	q++ = 0; / min */
3060	q++ = 0; / sec */
3061	q++ = 0; / frame */
3062	if (fMSF)
3063	{
3064	q++ = 0; / reserved */
3065	ataLBA2MSF(q, 0);
3066	q += 3;
3067	}
3068	else
3069	{
3070	/* sector 0 */
3071	ataH2BE_U32(q, 0);
3072	q += 4;
3073	}
3074
3075	cbSize = q - pbBuf;
3076	ataH2BE_U16(pbBuf, cbSize - 2);
3077	if (cbSize < s->cbTotalTransfer)
3078	s->cbTotalTransfer = cbSize;
3079	s->iSourceSink = ATAFN_SS_NULL;
3080	atapiR3CmdOK(s);
3081	return false;
3082	}
3083
3084
3085	static void atapiR3ParseCmdVirtualATAPI(ATADevState *s)
3086	{
3087	const uint8_t *pbPacket;
3088	uint8_t *pbBuf;
3089	uint32_t cbMax;
3090
3091	pbPacket = s->aATAPICmd;
3092	pbBuf = s->CTX_SUFF(pbIOBuffer);
3093	switch (pbPacket[0])
3094	{
3095	case SCSI_TEST_UNIT_READY:
3096	if (s->cNotifiedMediaChange > 0)
3097	{
3098	if (s->cNotifiedMediaChange-- > 2)
3099	atapiR3CmdErrorSimple(s, SCSI_SENSE_NOT_READY, SCSI_ASC_MEDIUM_NOT_PRESENT);
3100	else
3101	atapiR3CmdErrorSimple(s, SCSI_SENSE_UNIT_ATTENTION, SCSI_ASC_MEDIUM_MAY_HAVE_CHANGED); /* media changed */
3102	}
3103	else if (s->pDrvMount->pfnIsMounted(s->pDrvMount))
3104	atapiR3CmdOK(s);
3105	else
3106	atapiR3CmdErrorSimple(s, SCSI_SENSE_NOT_READY, SCSI_ASC_MEDIUM_NOT_PRESENT);
3107	break;
3108	case SCSI_GET_EVENT_STATUS_NOTIFICATION:
3109	cbMax = ataBE2H_U16(pbPacket + 7);
3110	ataR3StartTransfer(s, RT_MIN(cbMax, 8), PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_ATAPI_CMD, ATAFN_SS_ATAPI_GET_EVENT_STATUS_NOTIFICATION, true);
3111	break;
3112	case SCSI_MODE_SENSE_10:
3113	{
3114	uint8_t uPageControl, uPageCode;
3115	cbMax = ataBE2H_U16(pbPacket + 7);
3116	uPageControl = pbPacket[2] >> 6;
3117	uPageCode = pbPacket[2] & 0x3f;
3118	switch (uPageControl)
3119	{
3120	case SCSI_PAGECONTROL_CURRENT:
3121	switch (uPageCode)
3122	{
3123	case SCSI_MODEPAGE_ERROR_RECOVERY:
3124	ataR3StartTransfer(s, RT_MIN(cbMax, 16), PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_ATAPI_CMD, ATAFN_SS_ATAPI_MODE_SENSE_ERROR_RECOVERY, true);
3125	break;
3126	case SCSI_MODEPAGE_CD_STATUS:
3127	ataR3StartTransfer(s, RT_MIN(cbMax, 40), PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_ATAPI_CMD, ATAFN_SS_ATAPI_MODE_SENSE_CD_STATUS, true);
3128	break;
3129	default:
3130	goto error_cmd;
3131	}
3132	break;
3133	case SCSI_PAGECONTROL_CHANGEABLE:
3134	goto error_cmd;
3135	case SCSI_PAGECONTROL_DEFAULT:
3136	goto error_cmd;
3137	default:
3138	case SCSI_PAGECONTROL_SAVED:
3139	atapiR3CmdErrorSimple(s, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_SAVING_PARAMETERS_NOT_SUPPORTED);
3140	break;
3141	}
3142	break;
3143	}
3144	case SCSI_REQUEST_SENSE:
3145	cbMax = pbPacket[4];
3146	ataR3StartTransfer(s, RT_MIN(cbMax, 18), PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_ATAPI_CMD, ATAFN_SS_ATAPI_REQUEST_SENSE, true);
3147	break;
3148	case SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL:
3149	if (s->pDrvMount->pfnIsMounted(s->pDrvMount))
3150	{
3151	if (pbPacket[4] & 1)
3152	s->pDrvMount->pfnLock(s->pDrvMount);
3153	else
3154	s->pDrvMount->pfnUnlock(s->pDrvMount);
3155	atapiR3CmdOK(s);
3156	}
3157	else
3158	atapiR3CmdErrorSimple(s, SCSI_SENSE_NOT_READY, SCSI_ASC_MEDIUM_NOT_PRESENT);
3159	break;
3160	case SCSI_READ_10:
3161	case SCSI_READ_12:
3162	{
3163	uint32_t cSectors, iATAPILBA;
3164
3165	if (s->cNotifiedMediaChange > 0)
3166	{
3167	s->cNotifiedMediaChange-- ;
3168	atapiR3CmdErrorSimple(s, SCSI_SENSE_UNIT_ATTENTION, SCSI_ASC_MEDIUM_MAY_HAVE_CHANGED); /* media changed */
3169	break;
3170	}
3171	else if (!s->pDrvMount->pfnIsMounted(s->pDrvMount))
3172	{
3173	atapiR3CmdErrorSimple(s, SCSI_SENSE_NOT_READY, SCSI_ASC_MEDIUM_NOT_PRESENT);
3174	break;
3175	}
3176	if (pbPacket[0] == SCSI_READ_10)
3177	cSectors = ataBE2H_U16(pbPacket + 7);
3178	else
3179	cSectors = ataBE2H_U32(pbPacket + 6);
3180	iATAPILBA = ataBE2H_U32(pbPacket + 2);
3181	if (cSectors == 0)
3182	{
3183	atapiR3CmdOK(s);
3184	break;
3185	}
3186	if ((uint64_t)iATAPILBA + cSectors > s->cTotalSectors)
3187	{
3188	/* Rate limited logging, one log line per second. For
3189	* guests that insist on reading from places outside the
3190	* valid area this often generates too many release log
3191	* entries otherwise. */
3192	static uint64_t uLastLogTS = 0;
3193	if (RTTimeMilliTS() >= uLastLogTS + 1000)
3194	{
3195	LogRel(("PIIX3 ATA: LUN#%d: CD-ROM block number %Ld invalid (READ)\n", s->iLUN, (uint64_t)iATAPILBA + cSectors));
3196	uLastLogTS = RTTimeMilliTS();
3197	}
3198	atapiR3CmdErrorSimple(s, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_LOGICAL_BLOCK_OOR);
3199	break;
3200	}
3201	atapiR3ReadSectors(s, iATAPILBA, cSectors, 2048);
3202	break;
3203	}
3204	case SCSI_READ_CD:
3205	{
3206	uint32_t cSectors, iATAPILBA;
3207
3208	if (s->cNotifiedMediaChange > 0)
3209	{
3210	s->cNotifiedMediaChange-- ;
3211	atapiR3CmdErrorSimple(s, SCSI_SENSE_UNIT_ATTENTION, SCSI_ASC_MEDIUM_MAY_HAVE_CHANGED); /* media changed */
3212	break;
3213	}
3214	else if (!s->pDrvMount->pfnIsMounted(s->pDrvMount))
3215	{
3216	atapiR3CmdErrorSimple(s, SCSI_SENSE_NOT_READY, SCSI_ASC_MEDIUM_NOT_PRESENT);
3217	break;
3218	}
3219	cSectors = (pbPacket[6] << 16) \| (pbPacket[7] << 8) \| pbPacket[8];
3220	iATAPILBA = ataBE2H_U32(pbPacket + 2);
3221	if (cSectors == 0)
3222	{
3223	atapiR3CmdOK(s);
3224	break;
3225	}
3226	if ((uint64_t)iATAPILBA + cSectors > s->cTotalSectors)
3227	{
3228	/* Rate limited logging, one log line per second. For
3229	* guests that insist on reading from places outside the
3230	* valid area this often generates too many release log
3231	* entries otherwise. */
3232	static uint64_t uLastLogTS = 0;
3233	if (RTTimeMilliTS() >= uLastLogTS + 1000)
3234	{
3235	LogRel(("PIIX3 ATA: LUN#%d: CD-ROM block number %Ld invalid (READ CD)\n", s->iLUN, (uint64_t)iATAPILBA + cSectors));
3236	uLastLogTS = RTTimeMilliTS();
3237	}
3238	atapiR3CmdErrorSimple(s, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_LOGICAL_BLOCK_OOR);
3239	break;
3240	}
3241	switch (pbPacket[9] & 0xf8)
3242	{
3243	case 0x00:
3244	/* nothing */
3245	atapiR3CmdOK(s);
3246	break;
3247	case 0x10:
3248	/* normal read */
3249	atapiR3ReadSectors(s, iATAPILBA, cSectors, 2048);
3250	break;
3251	case 0xf8:
3252	/* read all data */
3253	atapiR3ReadSectors(s, iATAPILBA, cSectors, 2352);
3254	break;
3255	default:
3256	LogRel(("PIIX3 ATA: LUN#%d: CD-ROM sector format not supported (%#x)\n", s->iLUN, pbPacket[9] & 0xf8));
3257	atapiR3CmdErrorSimple(s, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_INV_FIELD_IN_CMD_PACKET);
3258	break;
3259	}
3260	break;
3261	}
3262	case SCSI_SEEK_10:
3263	{
3264	uint32_t iATAPILBA;
3265	if (s->cNotifiedMediaChange > 0)
3266	{
3267	s->cNotifiedMediaChange-- ;
3268	atapiR3CmdErrorSimple(s, SCSI_SENSE_UNIT_ATTENTION, SCSI_ASC_MEDIUM_MAY_HAVE_CHANGED); /* media changed */
3269	break;
3270	}
3271	else if (!s->pDrvMount->pfnIsMounted(s->pDrvMount))
3272	{
3273	atapiR3CmdErrorSimple(s, SCSI_SENSE_NOT_READY, SCSI_ASC_MEDIUM_NOT_PRESENT);
3274	break;
3275	}
3276	iATAPILBA = ataBE2H_U32(pbPacket + 2);
3277	if (iATAPILBA > s->cTotalSectors)
3278	{
3279	/* Rate limited logging, one log line per second. For
3280	* guests that insist on seeking to places outside the
3281	* valid area this often generates too many release log
3282	* entries otherwise. */
3283	static uint64_t uLastLogTS = 0;
3284	if (RTTimeMilliTS() >= uLastLogTS + 1000)
3285	{
3286	LogRel(("PIIX3 ATA: LUN#%d: CD-ROM block number %Ld invalid (SEEK)\n", s->iLUN, (uint64_t)iATAPILBA));
3287	uLastLogTS = RTTimeMilliTS();
3288	}
3289	atapiR3CmdErrorSimple(s, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_LOGICAL_BLOCK_OOR);
3290	break;
3291	}
3292	atapiR3CmdOK(s);
3293	ataSetStatus(s, ATA_STAT_SEEK); /* Linux expects this. */
3294	break;
3295	}
3296	case SCSI_START_STOP_UNIT:
3297	{
3298	int rc = VINF_SUCCESS;
3299	switch (pbPacket[4] & 3)
3300	{
3301	case 0: /* 00 - Stop motor */
3302	case 1: /* 01 - Start motor */
3303	break;
3304	case 2: /* 10 - Eject media */
3305	{
3306	/* This must be done from EMT. */
3307	PATACONTROLLER pCtl = ATADEVSTATE_2_CONTROLLER(s);
3308	PPDMDEVINS pDevIns = ATADEVSTATE_2_DEVINS(s);
3309	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
3310
3311	PDMCritSectLeave(&pCtl->lock);
3312	rc = VMR3ReqPriorityCallWait(PDMDevHlpGetVM(pDevIns), VMCPUID_ANY,
3313	(PFNRT)s->pDrvMount->pfnUnmount, 3,
3314	s->pDrvMount, false /=fForce/, true /=fEject/);
3315	Assert(RT_SUCCESS(rc) \|\| rc == VERR_PDM_MEDIA_LOCKED \|\| rc == VERR_PDM_MEDIA_NOT_MOUNTED);
3316	if (RT_SUCCESS(rc) && pThis->pMediaNotify)
3317	{
3318	rc = VMR3ReqCallNoWait(PDMDevHlpGetVM(pDevIns), VMCPUID_ANY,
3319	(PFNRT)pThis->pMediaNotify->pfnEjected, 2,
3320	pThis->pMediaNotify, s->iLUN);
3321	AssertRC(rc);
3322	}
3323	{
3324	STAM_PROFILE_START(&pCtl->StatLockWait, a);
3325	PDMCritSectEnter(&pCtl->lock, VINF_SUCCESS);
3326	STAM_PROFILE_STOP(&pCtl->StatLockWait, a);
3327	}
3328	break;
3329	}
3330	case 3: /* 11 - Load media */
3331	/** @todo rc = s->pDrvMount->pfnLoadMedia(s->pDrvMount) */
3332	break;
3333	}
3334	if (RT_SUCCESS(rc))
3335	atapiR3CmdOK(s);
3336	else
3337	atapiR3CmdErrorSimple(s, SCSI_SENSE_NOT_READY, SCSI_ASC_MEDIA_LOAD_OR_EJECT_FAILED);
3338	break;
3339	}
3340	case SCSI_MECHANISM_STATUS:
3341	{
3342	cbMax = ataBE2H_U16(pbPacket + 8);
3343	ataR3StartTransfer(s, RT_MIN(cbMax, 8), PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_ATAPI_CMD, ATAFN_SS_ATAPI_MECHANISM_STATUS, true);
3344	break;
3345	}
3346	case SCSI_READ_TOC_PMA_ATIP:
3347	{
3348	uint8_t format;
3349
3350	if (s->cNotifiedMediaChange > 0)
3351	{
3352	s->cNotifiedMediaChange-- ;
3353	atapiR3CmdErrorSimple(s, SCSI_SENSE_UNIT_ATTENTION, SCSI_ASC_MEDIUM_MAY_HAVE_CHANGED); /* media changed */
3354	break;
3355	}
3356	else if (!s->pDrvMount->pfnIsMounted(s->pDrvMount))
3357	{
3358	atapiR3CmdErrorSimple(s, SCSI_SENSE_NOT_READY, SCSI_ASC_MEDIUM_NOT_PRESENT);
3359	break;
3360	}
3361	cbMax = ataBE2H_U16(pbPacket + 7);
3362	/* SCSI MMC-3 spec says format is at offset 2 (lower 4 bits),
3363	* but Linux kernel uses offset 9 (topmost 2 bits). Hope that
3364	* the other field is clear... */
3365	format = (pbPacket[2] & 0xf) \| (pbPacket[9] >> 6);
3366	switch (format)
3367	{
3368	case 0:
3369	ataR3StartTransfer(s, cbMax, PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_ATAPI_CMD, ATAFN_SS_ATAPI_READ_TOC_NORMAL, true);
3370	break;
3371	case 1:
3372	ataR3StartTransfer(s, RT_MIN(cbMax, 12), PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_ATAPI_CMD, ATAFN_SS_ATAPI_READ_TOC_MULTI, true);
3373	break;
3374	case 2:
3375	ataR3StartTransfer(s, cbMax, PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_ATAPI_CMD, ATAFN_SS_ATAPI_READ_TOC_RAW, true);
3376	break;
3377	default:
3378	error_cmd:
3379	atapiR3CmdErrorSimple(s, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_INV_FIELD_IN_CMD_PACKET);
3380	break;
3381	}
3382	break;
3383	}
3384	case SCSI_READ_CAPACITY:
3385	if (s->cNotifiedMediaChange > 0)
3386	{
3387	s->cNotifiedMediaChange-- ;
3388	atapiR3CmdErrorSimple(s, SCSI_SENSE_UNIT_ATTENTION, SCSI_ASC_MEDIUM_MAY_HAVE_CHANGED); /* media changed */
3389	break;
3390	}
3391	else if (!s->pDrvMount->pfnIsMounted(s->pDrvMount))
3392	{
3393	atapiR3CmdErrorSimple(s, SCSI_SENSE_NOT_READY, SCSI_ASC_MEDIUM_NOT_PRESENT);
3394	break;
3395	}
3396	ataR3StartTransfer(s, 8, PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_ATAPI_CMD, ATAFN_SS_ATAPI_READ_CAPACITY, true);
3397	break;
3398	case SCSI_READ_DISC_INFORMATION:
3399	if (s->cNotifiedMediaChange > 0)
3400	{
3401	s->cNotifiedMediaChange-- ;
3402	atapiR3CmdErrorSimple(s, SCSI_SENSE_UNIT_ATTENTION, SCSI_ASC_MEDIUM_MAY_HAVE_CHANGED); /* media changed */
3403	break;
3404	}
3405	else if (!s->pDrvMount->pfnIsMounted(s->pDrvMount))
3406	{
3407	atapiR3CmdErrorSimple(s, SCSI_SENSE_NOT_READY, SCSI_ASC_MEDIUM_NOT_PRESENT);
3408	break;
3409	}
3410	cbMax = ataBE2H_U16(pbPacket + 7);
3411	ataR3StartTransfer(s, RT_MIN(cbMax, 34), PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_ATAPI_CMD, ATAFN_SS_ATAPI_READ_DISC_INFORMATION, true);
3412	break;
3413	case SCSI_READ_TRACK_INFORMATION:
3414	if (s->cNotifiedMediaChange > 0)
3415	{
3416	s->cNotifiedMediaChange-- ;
3417	atapiR3CmdErrorSimple(s, SCSI_SENSE_UNIT_ATTENTION, SCSI_ASC_MEDIUM_MAY_HAVE_CHANGED); /* media changed */
3418	break;
3419	}
3420	else if (!s->pDrvMount->pfnIsMounted(s->pDrvMount))
3421	{
3422	atapiR3CmdErrorSimple(s, SCSI_SENSE_NOT_READY, SCSI_ASC_MEDIUM_NOT_PRESENT);
3423	break;
3424	}
3425	cbMax = ataBE2H_U16(pbPacket + 7);
3426	ataR3StartTransfer(s, RT_MIN(cbMax, 36), PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_ATAPI_CMD, ATAFN_SS_ATAPI_READ_TRACK_INFORMATION, true);
3427	break;
3428	case SCSI_GET_CONFIGURATION:
3429	/* No media change stuff here, it can confuse Linux guests. */
3430	cbMax = ataBE2H_U16(pbPacket + 7);
3431	ataR3StartTransfer(s, RT_MIN(cbMax, 80), PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_ATAPI_CMD, ATAFN_SS_ATAPI_GET_CONFIGURATION, true);
3432	break;
3433	case SCSI_INQUIRY:
3434	cbMax = ataBE2H_U16(pbPacket + 3);
3435	ataR3StartTransfer(s, RT_MIN(cbMax, 36), PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_ATAPI_CMD, ATAFN_SS_ATAPI_INQUIRY, true);
3436	break;
3437	case SCSI_READ_DVD_STRUCTURE:
3438	{
3439	cbMax = ataBE2H_U16(pbPacket + 8);
3440	ataR3StartTransfer(s, RT_MIN(cbMax, 4), PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_ATAPI_CMD, ATAFN_SS_ATAPI_READ_DVD_STRUCTURE, true);
3441	break;
3442	}
3443	default:
3444	atapiR3CmdErrorSimple(s, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_ILLEGAL_OPCODE);
3445	break;
3446	}
3447	}
3448
3449
3450	/*
3451	* Parse ATAPI commands, passing them directly to the CD/DVD drive.
3452	*/
3453	static void atapiR3ParseCmdPassthrough(ATADevState *s)
3454	{
3455	const uint8_t *pbPacket;
3456	uint8_t *pbBuf;
3457	uint32_t cSectors, iATAPILBA;
3458	uint32_t cbTransfer = 0;
3459	PDMMEDIATXDIR uTxDir = PDMMEDIATXDIR_NONE;
3460
3461	pbPacket = s->aATAPICmd;
3462	pbBuf = s->CTX_SUFF(pbIOBuffer);
3463	switch (pbPacket[0])
3464	{
3465	case SCSI_BLANK:
3466	goto sendcmd;
3467	case SCSI_CLOSE_TRACK_SESSION:
3468	goto sendcmd;
3469	case SCSI_ERASE_10:
3470	iATAPILBA = ataBE2H_U32(pbPacket + 2);
3471	cbTransfer = ataBE2H_U16(pbPacket + 7);
3472	Log2(("ATAPI PT: lba %d\n", iATAPILBA));
3473	uTxDir = PDMMEDIATXDIR_TO_DEVICE;
3474	goto sendcmd;
3475	case SCSI_FORMAT_UNIT:
3476	cbTransfer = s->uATARegLCyl \| (s->uATARegHCyl << 8); /* use ATAPI transfer length */
3477	uTxDir = PDMMEDIATXDIR_TO_DEVICE;
3478	goto sendcmd;
3479	case SCSI_GET_CONFIGURATION:
3480	cbTransfer = ataBE2H_U16(pbPacket + 7);
3481	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3482	goto sendcmd;
3483	case SCSI_GET_EVENT_STATUS_NOTIFICATION:
3484	cbTransfer = ataBE2H_U16(pbPacket + 7);
3485	if (ASMAtomicReadU32(&s->MediaEventStatus) != ATA_EVENT_STATUS_UNCHANGED)
3486	{
3487	ataR3StartTransfer(s, RT_MIN(cbTransfer, 8), PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_ATAPI_CMD, ATAFN_SS_ATAPI_GET_EVENT_STATUS_NOTIFICATION, true);
3488	break;
3489	}
3490	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3491	goto sendcmd;
3492	case SCSI_GET_PERFORMANCE:
3493	cbTransfer = s->uATARegLCyl \| (s->uATARegHCyl << 8); /* use ATAPI transfer length */
3494	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3495	goto sendcmd;
3496	case SCSI_INQUIRY:
3497	cbTransfer = ataBE2H_U16(pbPacket + 3);
3498	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3499	goto sendcmd;
3500	case SCSI_LOAD_UNLOAD_MEDIUM:
3501	goto sendcmd;
3502	case SCSI_MECHANISM_STATUS:
3503	cbTransfer = ataBE2H_U16(pbPacket + 8);
3504	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3505	goto sendcmd;
3506	case SCSI_MODE_SELECT_10:
3507	cbTransfer = ataBE2H_U16(pbPacket + 7);
3508	uTxDir = PDMMEDIATXDIR_TO_DEVICE;
3509	goto sendcmd;
3510	case SCSI_MODE_SENSE_10:
3511	cbTransfer = ataBE2H_U16(pbPacket + 7);
3512	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3513	goto sendcmd;
3514	case SCSI_PAUSE_RESUME:
3515	goto sendcmd;
3516	case SCSI_PLAY_AUDIO_10:
3517	goto sendcmd;
3518	case SCSI_PLAY_AUDIO_12:
3519	goto sendcmd;
3520	case SCSI_PLAY_AUDIO_MSF:
3521	goto sendcmd;
3522	case SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL:
3523	/** @todo do not forget to unlock when a VM is shut down */
3524	goto sendcmd;
3525	case SCSI_READ_10:
3526	iATAPILBA = ataBE2H_U32(pbPacket + 2);
3527	cSectors = ataBE2H_U16(pbPacket + 7);
3528	Log2(("ATAPI PT: lba %d sectors %d\n", iATAPILBA, cSectors));
3529	s->cbATAPISector = 2048;
3530	cbTransfer = cSectors * s->cbATAPISector;
3531	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3532	goto sendcmd;
3533	case SCSI_READ_12:
3534	iATAPILBA = ataBE2H_U32(pbPacket + 2);
3535	cSectors = ataBE2H_U32(pbPacket + 6);
3536	Log2(("ATAPI PT: lba %d sectors %d\n", iATAPILBA, cSectors));
3537	s->cbATAPISector = 2048;
3538	cbTransfer = cSectors * s->cbATAPISector;
3539	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3540	goto sendcmd;
3541	case SCSI_READ_BUFFER:
3542	cbTransfer = ataBE2H_U24(pbPacket + 6);
3543	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3544	goto sendcmd;
3545	case SCSI_READ_BUFFER_CAPACITY:
3546	cbTransfer = ataBE2H_U16(pbPacket + 7);
3547	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3548	goto sendcmd;
3549	case SCSI_READ_CAPACITY:
3550	cbTransfer = 8;
3551	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3552	goto sendcmd;
3553	case SCSI_READ_CD:
3554	case SCSI_READ_CD_MSF:
3555	{
3556	/* Get sector size based on the expected sector type field. */
3557	switch ((pbPacket[1] >> 2) & 0x7)
3558	{
3559	case 0x0: /* All types. */
3560	{
3561	uint32_t iLbaStart;
3562
3563	if (pbPacket[0] == SCSI_READ_CD)
3564	iLbaStart = ataBE2H_U32(&pbPacket[2]);
3565	else
3566	iLbaStart = ataMSF2LBA(&pbPacket[3]);
3567
3568	if (s->pTrackList)
3569	s->cbATAPISector = ATAPIPassthroughTrackListGetSectorSizeFromLba(s->pTrackList, iLbaStart);
3570	else
3571	s->cbATAPISector = 2048; /* Might be incorrect if we couldn't determine the type. */
3572	break;
3573	}
3574	case 0x1: /* CD-DA */
3575	s->cbATAPISector = 2352;
3576	break;
3577	case 0x2: /* Mode 1 */
3578	s->cbATAPISector = 2048;
3579	break;
3580	case 0x3: /* Mode 2 formless */
3581	s->cbATAPISector = 2336;
3582	break;
3583	case 0x4: /* Mode 2 form 1 */
3584	s->cbATAPISector = 2048;
3585	break;
3586	case 0x5: /* Mode 2 form 2 */
3587	s->cbATAPISector = 2324;
3588	break;
3589	default: /* Reserved */
3590	AssertMsgFailed(("Unknown sector type\n"));
3591	s->cbATAPISector = 0; /** @todo we should probably fail the command here already. */
3592	}
3593
3594	if (pbPacket[0] == SCSI_READ_CD)
3595	cbTransfer = ataBE2H_U24(pbPacket + 6) * s->cbATAPISector;
3596	else /* SCSI_READ_MSF */
3597	{
3598	cSectors = ataMSF2LBA(pbPacket + 6) - ataMSF2LBA(pbPacket + 3);
3599	if (cSectors > 32)
3600	cSectors = 32; /* Limit transfer size to 64~74K. Safety first. In any case this can only harm software doing CDDA extraction. */
3601	cbTransfer = cSectors * s->cbATAPISector;
3602	}
3603	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3604	goto sendcmd;
3605	}
3606	case SCSI_READ_DISC_INFORMATION:
3607	cbTransfer = ataBE2H_U16(pbPacket + 7);
3608	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3609	goto sendcmd;
3610	case SCSI_READ_DVD_STRUCTURE:
3611	cbTransfer = ataBE2H_U16(pbPacket + 8);
3612	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3613	goto sendcmd;
3614	case SCSI_READ_FORMAT_CAPACITIES:
3615	cbTransfer = ataBE2H_U16(pbPacket + 7);
3616	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3617	goto sendcmd;
3618	case SCSI_READ_SUBCHANNEL:
3619	cbTransfer = ataBE2H_U16(pbPacket + 7);
3620	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3621	goto sendcmd;
3622	case SCSI_READ_TOC_PMA_ATIP:
3623	cbTransfer = ataBE2H_U16(pbPacket + 7);
3624	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3625	goto sendcmd;
3626	case SCSI_READ_TRACK_INFORMATION:
3627	cbTransfer = ataBE2H_U16(pbPacket + 7);
3628	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3629	goto sendcmd;
3630	case SCSI_REPAIR_TRACK:
3631	goto sendcmd;
3632	case SCSI_REPORT_KEY:
3633	cbTransfer = ataBE2H_U16(pbPacket + 8);
3634	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3635	goto sendcmd;
3636	case SCSI_REQUEST_SENSE:
3637	cbTransfer = pbPacket[4];
3638	if ((s->abATAPISense[2] & 0x0f) != SCSI_SENSE_NONE)
3639	{
3640	ataR3StartTransfer(s, RT_MIN(cbTransfer, 18), PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_ATAPI_CMD, ATAFN_SS_ATAPI_REQUEST_SENSE, true);
3641	break;
3642	}
3643	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3644	goto sendcmd;
3645	case SCSI_RESERVE_TRACK:
3646	goto sendcmd;
3647	case SCSI_SCAN:
3648	goto sendcmd;
3649	case SCSI_SEEK_10:
3650	goto sendcmd;
3651	case SCSI_SEND_CUE_SHEET:
3652	cbTransfer = ataBE2H_U24(pbPacket + 6);
3653	uTxDir = PDMMEDIATXDIR_TO_DEVICE;
3654	goto sendcmd;
3655	case SCSI_SEND_DVD_STRUCTURE:
3656	cbTransfer = ataBE2H_U16(pbPacket + 8);
3657	uTxDir = PDMMEDIATXDIR_TO_DEVICE;
3658	goto sendcmd;
3659	case SCSI_SEND_EVENT:
3660	cbTransfer = ataBE2H_U16(pbPacket + 8);
3661	uTxDir = PDMMEDIATXDIR_TO_DEVICE;
3662	goto sendcmd;
3663	case SCSI_SEND_KEY:
3664	cbTransfer = ataBE2H_U16(pbPacket + 8);
3665	uTxDir = PDMMEDIATXDIR_TO_DEVICE;
3666	goto sendcmd;
3667	case SCSI_SEND_OPC_INFORMATION:
3668	cbTransfer = ataBE2H_U16(pbPacket + 7);
3669	uTxDir = PDMMEDIATXDIR_TO_DEVICE;
3670	goto sendcmd;
3671	case SCSI_SET_CD_SPEED:
3672	goto sendcmd;
3673	case SCSI_SET_READ_AHEAD:
3674	goto sendcmd;
3675	case SCSI_SET_STREAMING:
3676	cbTransfer = ataBE2H_U16(pbPacket + 9);
3677	uTxDir = PDMMEDIATXDIR_TO_DEVICE;
3678	goto sendcmd;
3679	case SCSI_START_STOP_UNIT:
3680	goto sendcmd;
3681	case SCSI_STOP_PLAY_SCAN:
3682	goto sendcmd;
3683	case SCSI_SYNCHRONIZE_CACHE:
3684	goto sendcmd;
3685	case SCSI_TEST_UNIT_READY:
3686	goto sendcmd;
3687	case SCSI_VERIFY_10:
3688	goto sendcmd;
3689	case SCSI_WRITE_10:
3690	case SCSI_WRITE_AND_VERIFY_10:
3691	iATAPILBA = ataBE2H_U32(pbPacket + 2);
3692	cSectors = ataBE2H_U16(pbPacket + 7);
3693	if (s->pTrackList)
3694	s->cbATAPISector = ATAPIPassthroughTrackListGetSectorSizeFromLba(s->pTrackList, iATAPILBA);
3695	else
3696	s->cbATAPISector = 2048;
3697	Log2(("ATAPI PT: lba %d sectors %d sector size %d\n", iATAPILBA, cSectors, s->cbATAPISector));
3698	cbTransfer = cSectors * s->cbATAPISector;
3699	uTxDir = PDMMEDIATXDIR_TO_DEVICE;
3700	goto sendcmd;
3701	case SCSI_WRITE_12:
3702	iATAPILBA = ataBE2H_U32(pbPacket + 2);
3703	cSectors = ataBE2H_U32(pbPacket + 6);
3704	if (s->pTrackList)
3705	s->cbATAPISector = ATAPIPassthroughTrackListGetSectorSizeFromLba(s->pTrackList, iATAPILBA);
3706	else
3707	s->cbATAPISector = 2048;
3708	Log2(("ATAPI PT: lba %d sectors %d sector size %d\n", iATAPILBA, cSectors, s->cbATAPISector));
3709	cbTransfer = cSectors * s->cbATAPISector;
3710	uTxDir = PDMMEDIATXDIR_TO_DEVICE;
3711	goto sendcmd;
3712	case SCSI_WRITE_BUFFER:
3713	switch (pbPacket[1] & 0x1f)
3714	{
3715	case 0x04: /* download microcode */
3716	case 0x05: /* download microcode and save */
3717	case 0x06: /* download microcode with offsets */
3718	case 0x07: /* download microcode with offsets and save */
3719	case 0x0e: /* download microcode with offsets and defer activation */
3720	case 0x0f: /* activate deferred microcode */
3721	LogRel(("PIIX3 ATA: LUN#%d: CD-ROM passthrough command attempted to update firmware, blocked\n", s->iLUN));
3722	atapiR3CmdErrorSimple(s, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_INV_FIELD_IN_CMD_PACKET);
3723	break;
3724	default:
3725	cbTransfer = ataBE2H_U16(pbPacket + 6);
3726	uTxDir = PDMMEDIATXDIR_TO_DEVICE;
3727	goto sendcmd;
3728	}
3729	break;
3730	case SCSI_REPORT_LUNS: /* Not part of MMC-3, but used by Windows. */
3731	cbTransfer = ataBE2H_U32(pbPacket + 6);
3732	uTxDir = PDMMEDIATXDIR_FROM_DEVICE;
3733	goto sendcmd;
3734	case SCSI_REZERO_UNIT:
3735	/* Obsolete command used by cdrecord. What else would one expect?
3736	* This command is not sent to the drive, it is handled internally,
3737	* as the Linux kernel doesn't like it (message "scsi: unknown
3738	* opcode 0x01" in syslog) and replies with a sense code of 0,
3739	* which sends cdrecord to an endless loop. */
3740	atapiR3CmdErrorSimple(s, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_ILLEGAL_OPCODE);
3741	break;
3742	default:
3743	LogRel(("PIIX3 ATA: LUN#%d: passthrough unimplemented for command %#x\n", s->iLUN, pbPacket[0]));
3744	atapiR3CmdErrorSimple(s, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_ILLEGAL_OPCODE);
3745	break;
3746	sendcmd:
3747	/*
3748	* Send a command to the drive, passing data in/out as required.
3749	* Commands which exceed the I/O buffer size are split below
3750	* or aborted if splitting is not implemented.
3751	*/
3752	Log2(("ATAPI PT: max size %d\n", cbTransfer));
3753	if (cbTransfer == 0)
3754	uTxDir = PDMMEDIATXDIR_NONE;
3755	ataR3StartTransfer(s, cbTransfer, uTxDir, ATAFN_BT_ATAPI_PASSTHROUGH_CMD, ATAFN_SS_ATAPI_PASSTHROUGH, true);
3756	}
3757	}
3758
3759
3760	static void atapiR3ParseCmd(ATADevState *s)
3761	{
3762	const uint8_t *pbPacket;
3763
3764	pbPacket = s->aATAPICmd;
3765	# ifdef DEBUG
3766	Log(("%s: LUN#%d DMA=%d CMD=%#04x \"%s\"\n", __FUNCTION__, s->iLUN, s->fDMA, pbPacket[0], SCSICmdText(pbPacket[0])));
3767	# else /* !DEBUG */
3768	Log(("%s: LUN#%d DMA=%d CMD=%#04x\n", __FUNCTION__, s->iLUN, s->fDMA, pbPacket[0]));
3769	# endif /* !DEBUG */
3770	Log2(("%s: limit=%#x packet: %.*Rhxs\n", __FUNCTION__, s->uATARegLCyl \| (s->uATARegHCyl << 8), ATAPI_PACKET_SIZE, pbPacket));
3771
3772	if (s->fATAPIPassthrough)
3773	atapiR3ParseCmdPassthrough(s);
3774	else
3775	atapiR3ParseCmdVirtualATAPI(s);
3776	}
3777
3778
3779	static bool ataR3PacketSS(ATADevState *s)
3780	{
3781	s->fDMA = !!(s->uATARegFeature & 1);
3782	memcpy(s->aATAPICmd, s->CTX_SUFF(pbIOBuffer), ATAPI_PACKET_SIZE);
3783	s->uTxDir = PDMMEDIATXDIR_NONE;
3784	s->cbTotalTransfer = 0;
3785	s->cbElementaryTransfer = 0;
3786	s->cbAtapiPassthroughTransfer = 0;
3787	atapiR3ParseCmd(s);
3788	return false;
3789	}
3790
3791
3792	/**
3793	* SCSI_GET_EVENT_STATUS_NOTIFICATION should return "medium removed" event
3794	* from now on, regardless if there was a medium inserted or not.
3795	*/
3796	static void ataR3MediumRemoved(ATADevState *s)
3797	{
3798	ASMAtomicWriteU32(&s->MediaEventStatus, ATA_EVENT_STATUS_MEDIA_REMOVED);
3799	}
3800
3801
3802	/**
3803	* SCSI_GET_EVENT_STATUS_NOTIFICATION should return "medium inserted". If
3804	* there was already a medium inserted, don't forget to send the "medium
3805	* removed" event first.
3806	*/
3807	static void ataR3MediumInserted(ATADevState *s)
3808	{
3809	uint32_t OldStatus, NewStatus;
3810	do
3811	{
3812	OldStatus = ASMAtomicReadU32(&s->MediaEventStatus);
3813	switch (OldStatus)
3814	{
3815	case ATA_EVENT_STATUS_MEDIA_CHANGED:
3816	case ATA_EVENT_STATUS_MEDIA_REMOVED:
3817	/* no change, we will send "medium removed" + "medium inserted" */
3818	NewStatus = ATA_EVENT_STATUS_MEDIA_CHANGED;
3819	break;
3820	default:
3821	NewStatus = ATA_EVENT_STATUS_MEDIA_NEW;
3822	break;
3823	}
3824	} while (!ASMAtomicCmpXchgU32(&s->MediaEventStatus, NewStatus, OldStatus));
3825	}
3826
3827
3828	/**
3829	* @interface_method_impl{PDMIMOUNTNOTIFY,pfnMountNotify}
3830	*/
3831	static DECLCALLBACK(void) ataR3MountNotify(PPDMIMOUNTNOTIFY pInterface)
3832	{
3833	ATADevState *pIf = PDMIMOUNTNOTIFY_2_ATASTATE(pInterface);
3834	Log(("%s: changing LUN#%d\n", __FUNCTION__, pIf->iLUN));
3835
3836	/* Ignore the call if we're called while being attached. */
3837	if (!pIf->pDrvMedia)
3838	return;
3839
3840	if (pIf->fATAPI)
3841	pIf->cTotalSectors = pIf->pDrvMedia->pfnGetSize(pIf->pDrvMedia) / 2048;
3842	else
3843	pIf->cTotalSectors = pIf->pDrvMedia->pfnGetSize(pIf->pDrvMedia) / pIf->cbSector;
3844
3845	LogRel(("PIIX3 ATA: LUN#%d: CD/DVD, total number of sectors %Ld, passthrough unchanged\n", pIf->iLUN, pIf->cTotalSectors));
3846
3847	/* Report media changed in TEST UNIT and other (probably incorrect) places. */
3848	if (pIf->cNotifiedMediaChange < 2)
3849	pIf->cNotifiedMediaChange = 1;
3850	ataR3MediumInserted(pIf);
3851	ataR3MediumTypeSet(pIf, ATA_MEDIA_TYPE_UNKNOWN);
3852	}
3853
3854	/**
3855	* @interface_method_impl{PDMIMOUNTNOTIFY,pfnUnmountNotify}
3856	*/
3857	static DECLCALLBACK(void) ataR3UnmountNotify(PPDMIMOUNTNOTIFY pInterface)
3858	{
3859	ATADevState *pIf = PDMIMOUNTNOTIFY_2_ATASTATE(pInterface);
3860	Log(("%s:\n", __FUNCTION__));
3861	pIf->cTotalSectors = 0;
3862
3863	/*
3864	* Whatever I do, XP will not use the GET MEDIA STATUS nor the EVENT stuff.
3865	* However, it will respond to TEST UNIT with a 0x6 0x28 (media changed) sense code.
3866	* So, we'll give it 4 TEST UNIT command to catch up, two which the media is not
3867	* present and 2 in which it is changed.
3868	*/
3869	pIf->cNotifiedMediaChange = 1;
3870	ataR3MediumRemoved(pIf);
3871	ataR3MediumTypeSet(pIf, ATA_MEDIA_NO_DISC);
3872	}
3873
3874	static void ataR3PacketBT(ATADevState *s)
3875	{
3876	s->cbElementaryTransfer = s->cbTotalTransfer;
3877	s->cbAtapiPassthroughTransfer = s->cbTotalTransfer;
3878	s->uATARegNSector = (s->uATARegNSector & ~7) \| ATAPI_INT_REASON_CD;
3879	Log2(("%s: interrupt reason %#04x\n", __FUNCTION__, s->uATARegNSector));
3880	ataSetStatusValue(s, ATA_STAT_READY);
3881	}
3882
3883
3884	static void ataR3ResetDevice(ATADevState *s)
3885	{
3886	s->cMultSectors = ATA_MAX_MULT_SECTORS;
3887	s->cNotifiedMediaChange = 0;
3888	ASMAtomicWriteU32(&s->MediaEventStatus, ATA_EVENT_STATUS_UNCHANGED);
3889	ASMAtomicWriteU32(&s->MediaTrackType, ATA_MEDIA_TYPE_UNKNOWN);
3890	ataUnsetIRQ(s);
3891
3892	s->uATARegSelect = 0x20;
3893	ataSetStatusValue(s, ATA_STAT_READY);
3894	ataR3SetSignature(s);
3895	s->cbTotalTransfer = 0;
3896	s->cbElementaryTransfer = 0;
3897	s->cbAtapiPassthroughTransfer = 0;
3898	s->iIOBufferPIODataStart = 0;
3899	s->iIOBufferPIODataEnd = 0;
3900	s->iBeginTransfer = ATAFN_BT_NULL;
3901	s->iSourceSink = ATAFN_SS_NULL;
3902	s->fDMA = false;
3903	s->fATAPITransfer = false;
3904	s->uATATransferMode = ATA_MODE_UDMA \| 2; /* PIIX3 supports only up to UDMA2 */
3905
3906	s->uATARegFeature = 0;
3907	}
3908
3909
3910	static bool ataR3ExecuteDeviceDiagnosticSS(ATADevState *s)
3911	{
3912	ataR3SetSignature(s);
3913	if (s->fATAPI)
3914	ataSetStatusValue(s, 0); /* NOTE: READY is _not_ set */
3915	else
3916	ataSetStatusValue(s, ATA_STAT_READY \| ATA_STAT_SEEK);
3917	s->uATARegError = 0x01;
3918	return false;
3919	}
3920
3921
3922	static int ataR3TrimSectors(ATADevState *s, uint64_t u64Sector, uint32_t cSectors,
3923	bool *pfRedo)
3924	{
3925	RTRANGE TrimRange;
3926	PATACONTROLLER pCtl = ATADEVSTATE_2_CONTROLLER(s);
3927	int rc;
3928
3929	PDMCritSectLeave(&pCtl->lock);
3930
3931	TrimRange.offStart = u64Sector * s->cbSector;
3932	TrimRange.cbRange = cSectors * s->cbSector;
3933
3934	s->Led.Asserted.s.fWriting = s->Led.Actual.s.fWriting = 1;
3935	rc = s->pDrvMedia->pfnDiscard(s->pDrvMedia, &TrimRange, 1);
3936	s->Led.Actual.s.fWriting = 0;
3937
3938	if (RT_SUCCESS(rc))
3939	*pfRedo = false;
3940	else
3941	*pfRedo = ataR3IsRedoSetWarning(s, rc);
3942
3943	STAM_PROFILE_START(&pCtl->StatLockWait, a);
3944	PDMCritSectEnter(&pCtl->lock, VINF_SUCCESS);
3945	STAM_PROFILE_STOP(&pCtl->StatLockWait, a);
3946	return rc;
3947	}
3948
3949
3950	static bool ataR3TrimSS(ATADevState *s)
3951	{
3952	int rc = VERR_GENERAL_FAILURE;
3953	uint32_t cRangesMax;
3954	uint64_t pu64Range = (uint64_t )s->CTX_SUFF(pbIOBuffer);
3955	bool fRedo = false;
3956
3957	cRangesMax = s->cbElementaryTransfer / sizeof(uint64_t);
3958	Assert(cRangesMax);
3959
3960	while (cRangesMax-- > 0)
3961	{
3962	if (ATA_RANGE_LENGTH_GET(*pu64Range) == 0)
3963	break;
3964
3965	rc = ataR3TrimSectors(s, *pu64Range & ATA_RANGE_LBA_MASK,
3966	ATA_RANGE_LENGTH_GET(*pu64Range), &fRedo);
3967	if (RT_FAILURE(rc))
3968	break;
3969
3970	pu64Range++;
3971	}
3972
3973	if (RT_SUCCESS(rc))
3974	{
3975	s->iSourceSink = ATAFN_SS_NULL;
3976	ataR3CmdOK(s, ATA_STAT_SEEK);
3977	}
3978	else
3979	{
3980	if (fRedo)
3981	return fRedo;
3982	if (s->cErrors++ < MAX_LOG_REL_ERRORS)
3983	LogRel(("PIIX3 ATA: LUN#%d: disk trim error (rc=%Rrc iSector=%#RX64 cSectors=%#RX32)\n",
3984	s->iLUN, rc, pu64Range & ATA_RANGE_LBA_MASK, ATA_RANGE_LENGTH_GET(pu64Range)));
3985
3986	/*
3987	* Check if we got interrupted. We don't need to set status variables
3988	* because the request was aborted.
3989	*/
3990	if (rc != VERR_INTERRUPTED)
3991	ataR3CmdError(s, ID_ERR);
3992	}
3993
3994	return false;
3995	}
3996
3997
3998	static void ataR3ParseCmd(ATADevState *s, uint8_t cmd)
3999	{
4000	# ifdef DEBUG
4001	Log(("%s: LUN#%d CMD=%#04x \"%s\"\n", __FUNCTION__, s->iLUN, cmd, ATACmdText(cmd)));
4002	# else /* !DEBUG */
4003	Log(("%s: LUN#%d CMD=%#04x\n", __FUNCTION__, s->iLUN, cmd));
4004	# endif /* !DEBUG */
4005	s->fLBA48 = false;
4006	s->fDMA = false;
4007	if (cmd == ATA_IDLE_IMMEDIATE)
4008	{
4009	/* Detect Linux timeout recovery, first tries IDLE IMMEDIATE (which
4010	* would overwrite the failing command unfortunately), then RESET. */
4011	int32_t uCmdWait = -1;
4012	uint64_t uNow = RTTimeNanoTS();
4013	if (s->u64CmdTS)
4014	uCmdWait = (uNow - s->u64CmdTS) / 1000;
4015	LogRel(("PIIX3 ATA: LUN#%d: IDLE IMMEDIATE, CmdIf=%#04x (%d usec ago)\n",
4016	s->iLUN, s->uATARegCommand, uCmdWait));
4017	}
4018	s->uATARegCommand = cmd;
4019	switch (cmd)
4020	{
4021	case ATA_IDENTIFY_DEVICE:
4022	if (s->pDrvMedia && !s->fATAPI)
4023	ataR3StartTransfer(s, 512, PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_NULL, ATAFN_SS_IDENTIFY, false);
4024	else
4025	{
4026	if (s->fATAPI)
4027	ataR3SetSignature(s);
4028	ataR3CmdError(s, ABRT_ERR);
4029	ataUnsetStatus(s, ATA_STAT_READY);
4030	ataHCSetIRQ(s); /* Shortcut, do not use AIO thread. */
4031	}
4032	break;
4033	case ATA_RECALIBRATE:
4034	if (s->fATAPI)
4035	goto abort_cmd;
4036	/* fall through */
4037	case ATA_INITIALIZE_DEVICE_PARAMETERS:
4038	ataR3CmdOK(s, ATA_STAT_SEEK);
4039	ataHCSetIRQ(s); /* Shortcut, do not use AIO thread. */
4040	break;
4041	case ATA_SET_MULTIPLE_MODE:
4042	if ( s->uATARegNSector != 0
4043	&& ( s->uATARegNSector > ATA_MAX_MULT_SECTORS
4044	\|\| (s->uATARegNSector & (s->uATARegNSector - 1)) != 0))
4045	{
4046	ataR3CmdError(s, ABRT_ERR);
4047	}
4048	else
4049	{
4050	Log2(("%s: set multi sector count to %d\n", __FUNCTION__, s->uATARegNSector));
4051	s->cMultSectors = s->uATARegNSector;
4052	ataR3CmdOK(s, 0);
4053	}
4054	ataHCSetIRQ(s); /* Shortcut, do not use AIO thread. */
4055	break;
4056	case ATA_READ_VERIFY_SECTORS_EXT:
4057	s->fLBA48 = true;
4058	case ATA_READ_VERIFY_SECTORS:
4059	case ATA_READ_VERIFY_SECTORS_WITHOUT_RETRIES:
4060	/* do sector number check ? */
4061	ataR3CmdOK(s, ATA_STAT_SEEK);
4062	ataHCSetIRQ(s); /* Shortcut, do not use AIO thread. */
4063	break;
4064	case ATA_READ_SECTORS_EXT:
4065	s->fLBA48 = true;
4066	case ATA_READ_SECTORS:
4067	case ATA_READ_SECTORS_WITHOUT_RETRIES:
4068	if (!s->pDrvMedia \|\| s->fATAPI)
4069	goto abort_cmd;
4070	s->cSectorsPerIRQ = 1;
4071	ataR3StartTransfer(s, ataR3GetNSectors(s) * s->cbSector, PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_READ_WRITE_SECTORS, ATAFN_SS_READ_SECTORS, false);
4072	break;
4073	case ATA_WRITE_SECTORS_EXT:
4074	s->fLBA48 = true;
4075	case ATA_WRITE_SECTORS:
4076	case ATA_WRITE_SECTORS_WITHOUT_RETRIES:
4077	if (!s->pDrvMedia \|\| s->fATAPI)
4078	goto abort_cmd;
4079	s->cSectorsPerIRQ = 1;
4080	ataR3StartTransfer(s, ataR3GetNSectors(s) * s->cbSector, PDMMEDIATXDIR_TO_DEVICE, ATAFN_BT_READ_WRITE_SECTORS, ATAFN_SS_WRITE_SECTORS, false);
4081	break;
4082	case ATA_READ_MULTIPLE_EXT:
4083	s->fLBA48 = true;
4084	case ATA_READ_MULTIPLE:
4085	if (!s->pDrvMedia \|\| !s->cMultSectors \|\| s->fATAPI)
4086	goto abort_cmd;
4087	s->cSectorsPerIRQ = s->cMultSectors;
4088	ataR3StartTransfer(s, ataR3GetNSectors(s) * s->cbSector, PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_READ_WRITE_SECTORS, ATAFN_SS_READ_SECTORS, false);
4089	break;
4090	case ATA_WRITE_MULTIPLE_EXT:
4091	s->fLBA48 = true;
4092	case ATA_WRITE_MULTIPLE:
4093	if (!s->pDrvMedia \|\| !s->cMultSectors \|\| s->fATAPI)
4094	goto abort_cmd;
4095	s->cSectorsPerIRQ = s->cMultSectors;
4096	ataR3StartTransfer(s, ataR3GetNSectors(s) * s->cbSector, PDMMEDIATXDIR_TO_DEVICE, ATAFN_BT_READ_WRITE_SECTORS, ATAFN_SS_WRITE_SECTORS, false);
4097	break;
4098	case ATA_READ_DMA_EXT:
4099	s->fLBA48 = true;
4100	case ATA_READ_DMA:
4101	case ATA_READ_DMA_WITHOUT_RETRIES:
4102	if (!s->pDrvMedia \|\| s->fATAPI)
4103	goto abort_cmd;
4104	s->cSectorsPerIRQ = ATA_MAX_MULT_SECTORS;
4105	s->fDMA = true;
4106	ataR3StartTransfer(s, ataR3GetNSectors(s) * s->cbSector, PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_READ_WRITE_SECTORS, ATAFN_SS_READ_SECTORS, false);
4107	break;
4108	case ATA_WRITE_DMA_EXT:
4109	s->fLBA48 = true;
4110	case ATA_WRITE_DMA:
4111	case ATA_WRITE_DMA_WITHOUT_RETRIES:
4112	if (!s->pDrvMedia \|\| s->fATAPI)
4113	goto abort_cmd;
4114	s->cSectorsPerIRQ = ATA_MAX_MULT_SECTORS;
4115	s->fDMA = true;
4116	ataR3StartTransfer(s, ataR3GetNSectors(s) * s->cbSector, PDMMEDIATXDIR_TO_DEVICE, ATAFN_BT_READ_WRITE_SECTORS, ATAFN_SS_WRITE_SECTORS, false);
4117	break;
4118	case ATA_READ_NATIVE_MAX_ADDRESS_EXT:
4119	s->fLBA48 = true;
4120	ataR3SetSector(s, s->cTotalSectors - 1);
4121	ataR3CmdOK(s, 0);
4122	ataHCSetIRQ(s); /* Shortcut, do not use AIO thread. */
4123	break;
4124	case ATA_SEEK: /* Used by the SCO OpenServer. Command is marked as obsolete */
4125	ataR3CmdOK(s, 0);
4126	ataHCSetIRQ(s); /* Shortcut, do not use AIO thread. */
4127	break;
4128	case ATA_READ_NATIVE_MAX_ADDRESS:
4129	ataR3SetSector(s, RT_MIN(s->cTotalSectors, 1 << 28) - 1);
4130	ataR3CmdOK(s, 0);
4131	ataHCSetIRQ(s); /* Shortcut, do not use AIO thread. */
4132	break;
4133	case ATA_CHECK_POWER_MODE:
4134	s->uATARegNSector = 0xff; /* drive active or idle */
4135	ataR3CmdOK(s, 0);
4136	ataHCSetIRQ(s); /* Shortcut, do not use AIO thread. */
4137	break;
4138	case ATA_SET_FEATURES:
4139	Log2(("%s: feature=%#x\n", __FUNCTION__, s->uATARegFeature));
4140	if (!s->pDrvMedia)
4141	goto abort_cmd;
4142	switch (s->uATARegFeature)
4143	{
4144	case 0x02: /* write cache enable */
4145	Log2(("%s: write cache enable\n", __FUNCTION__));
4146	ataR3CmdOK(s, ATA_STAT_SEEK);
4147	ataHCSetIRQ(s); /* Shortcut, do not use AIO thread. */
4148	break;
4149	case 0xaa: /* read look-ahead enable */
4150	Log2(("%s: read look-ahead enable\n", __FUNCTION__));
4151	ataR3CmdOK(s, ATA_STAT_SEEK);
4152	ataHCSetIRQ(s); /* Shortcut, do not use AIO thread. */
4153	break;
4154	case 0x55: /* read look-ahead disable */
4155	Log2(("%s: read look-ahead disable\n", __FUNCTION__));
4156	ataR3CmdOK(s, ATA_STAT_SEEK);
4157	ataHCSetIRQ(s); /* Shortcut, do not use AIO thread. */
4158	break;
4159	case 0xcc: /* reverting to power-on defaults enable */
4160	Log2(("%s: revert to power-on defaults enable\n", __FUNCTION__));
4161	ataR3CmdOK(s, ATA_STAT_SEEK);
4162	ataHCSetIRQ(s); /* Shortcut, do not use AIO thread. */
4163	break;
4164	case 0x66: /* reverting to power-on defaults disable */
4165	Log2(("%s: revert to power-on defaults disable\n", __FUNCTION__));
4166	ataR3CmdOK(s, ATA_STAT_SEEK);
4167	ataHCSetIRQ(s); /* Shortcut, do not use AIO thread. */
4168	break;
4169	case 0x82: /* write cache disable */
4170	Log2(("%s: write cache disable\n", __FUNCTION__));
4171	/* As per the ATA/ATAPI-6 specs, a write cache disable
4172	* command MUST flush the write buffers to disc. */
4173	ataR3StartTransfer(s, 0, PDMMEDIATXDIR_NONE, ATAFN_BT_NULL, ATAFN_SS_FLUSH, false);
4174	break;
4175	case 0x03: { /* set transfer mode */
4176	Log2(("%s: transfer mode %#04x\n", __FUNCTION__, s->uATARegNSector));
4177	switch (s->uATARegNSector & 0xf8)
4178	{
4179	case 0x00: /* PIO default */
4180	case 0x08: /* PIO mode */
4181	break;
4182	case ATA_MODE_MDMA: /* MDMA mode */
4183	s->uATATransferMode = (s->uATARegNSector & 0xf8) \| RT_MIN(s->uATARegNSector & 0x07, ATA_MDMA_MODE_MAX);
4184	break;
4185	case ATA_MODE_UDMA: /* UDMA mode */
4186	s->uATATransferMode = (s->uATARegNSector & 0xf8) \| RT_MIN(s->uATARegNSector & 0x07, ATA_UDMA_MODE_MAX);
4187	break;
4188	default:
4189	goto abort_cmd;
4190	}
4191	ataR3CmdOK(s, ATA_STAT_SEEK);
4192	ataHCSetIRQ(s); /* Shortcut, do not use AIO thread. */
4193	break;
4194	}
4195	default:
4196	goto abort_cmd;
4197	}
4198	/*
4199	* OS/2 workarond:
4200	* The OS/2 IDE driver from MCP2 appears to rely on the feature register being
4201	* reset here. According to the specification, this is a driver bug as the register
4202	* contents are undefined after the call. This means we can just as well reset it.
4203	*/
4204	s->uATARegFeature = 0;
4205	break;
4206	case ATA_FLUSH_CACHE_EXT:
4207	case ATA_FLUSH_CACHE:
4208	if (!s->pDrvMedia \|\| s->fATAPI)
4209	goto abort_cmd;
4210	ataR3StartTransfer(s, 0, PDMMEDIATXDIR_NONE, ATAFN_BT_NULL, ATAFN_SS_FLUSH, false);
4211	break;
4212	case ATA_STANDBY_IMMEDIATE:
4213	ataR3CmdOK(s, 0);
4214	ataHCSetIRQ(s); /* Shortcut, do not use AIO thread. */
4215	break;
4216	case ATA_IDLE_IMMEDIATE:
4217	LogRel(("PIIX3 ATA: LUN#%d: aborting current command\n", s->iLUN));
4218	ataR3AbortCurrentCommand(s, false);
4219	break;
4220	case ATA_SLEEP:
4221	ataR3CmdOK(s, 0);
4222	ataHCSetIRQ(s);
4223	break;
4224	/* ATAPI commands */
4225	case ATA_IDENTIFY_PACKET_DEVICE:
4226	if (s->fATAPI)
4227	ataR3StartTransfer(s, 512, PDMMEDIATXDIR_FROM_DEVICE, ATAFN_BT_NULL, ATAFN_SS_ATAPI_IDENTIFY, false);
4228	else
4229	{
4230	ataR3CmdError(s, ABRT_ERR);
4231	ataHCSetIRQ(s); /* Shortcut, do not use AIO thread. */
4232	}
4233	break;
4234	case ATA_EXECUTE_DEVICE_DIAGNOSTIC:
4235	ataR3StartTransfer(s, 0, PDMMEDIATXDIR_NONE, ATAFN_BT_NULL, ATAFN_SS_EXECUTE_DEVICE_DIAGNOSTIC, false);
4236	break;
4237	case ATA_DEVICE_RESET:
4238	if (!s->fATAPI)
4239	goto abort_cmd;
4240	LogRel(("PIIX3 ATA: LUN#%d: performing device RESET\n", s->iLUN));
4241	ataR3AbortCurrentCommand(s, true);
4242	break;
4243	case ATA_PACKET:
4244	if (!s->fATAPI)
4245	goto abort_cmd;
4246	/* overlapping commands not supported */
4247	if (s->uATARegFeature & 0x02)
4248	goto abort_cmd;
4249	ataR3StartTransfer(s, ATAPI_PACKET_SIZE, PDMMEDIATXDIR_TO_DEVICE, ATAFN_BT_PACKET, ATAFN_SS_PACKET, false);
4250	break;
4251	case ATA_DATA_SET_MANAGEMENT:
4252	if (!s->pDrvMedia \|\| !s->pDrvMedia->pfnDiscard)
4253	goto abort_cmd;
4254	if ( !(s->uATARegFeature & UINT8_C(0x01))
4255	\|\| (s->uATARegFeature & ~UINT8_C(0x01)))
4256	goto abort_cmd;
4257	s->fDMA = true;
4258	ataR3StartTransfer(s, (s->uATARegNSectorHOB << 8 \| s->uATARegNSector) * s->cbSector, PDMMEDIATXDIR_TO_DEVICE, ATAFN_BT_NULL, ATAFN_SS_TRIM, false);
4259	break;
4260	default:
4261	abort_cmd:
4262	ataR3CmdError(s, ABRT_ERR);
4263	if (s->fATAPI)
4264	ataUnsetStatus(s, ATA_STAT_READY);
4265	ataHCSetIRQ(s); /* Shortcut, do not use AIO thread. */
4266	break;
4267	}
4268	}
4269
4270	# endif /* IN_RING3 */
4271	#endif /* IN_RING0 \|\| IN_RING3 */
4272
4273	/*
4274	* Note: There are four distinct cases of port I/O handling depending on
4275	* which devices (if any) are attached to an IDE channel:
4276	*
4277	* 1) No device attached. No response to writes or reads (i.e. reads return
4278	* all bits set).
4279	*
4280	* 2) Both devices attached. Reads and writes are processed normally.
4281	*
4282	* 3) Device 0 only. If device 0 is selected, normal behavior applies. But
4283	* if Device 1 is selected, writes are still directed to Device 0 (except
4284	* commands are not executed), reads from control/command registers are
4285	* directed to Device 0, but status/alt status reads return 0. If Device 1
4286	* is a PACKET device, all reads return 0. See ATAPI-6 clause 9.16.1 and
4287	* Table 18 in clause 7.1.
4288	*
4289	* 4) Device 1 only - non-standard(!). Device 1 can't tell if Device 0 is
4290	* present or not and behaves the same. That means if Device 0 is selected,
4291	* Device 1 responds to writes (except commands are not executed) but does
4292	* not respond to reads. If Device 1 selected, normal behavior applies.
4293	* See ATAPI-6 clause 9.16.2 and Table 15 in clause 7.1.
4294	*/
4295
4296	static int ataIOPortWriteU8(PATACONTROLLER pCtl, uint32_t addr, uint32_t val)
4297	{
4298	Log2(("%s: LUN#%d write addr=%#x val=%#04x\n", __FUNCTION__, pCtl->aIfs[pCtl->iSelectedIf].iLUN, addr, val));
4299	addr &= 7;
4300	switch (addr)
4301	{
4302	case 0:
4303	break;
4304	case 1: /* feature register */
4305	/* NOTE: data is written to the two drives */
4306	pCtl->aIfs[0].uATARegDevCtl &= ~ATA_DEVCTL_HOB;
4307	pCtl->aIfs[1].uATARegDevCtl &= ~ATA_DEVCTL_HOB;
4308	pCtl->aIfs[0].uATARegFeatureHOB = pCtl->aIfs[0].uATARegFeature;
4309	pCtl->aIfs[1].uATARegFeatureHOB = pCtl->aIfs[1].uATARegFeature;
4310	pCtl->aIfs[0].uATARegFeature = val;
4311	pCtl->aIfs[1].uATARegFeature = val;
4312	break;
4313	case 2: /* sector count */
4314	pCtl->aIfs[0].uATARegDevCtl &= ~ATA_DEVCTL_HOB;
4315	pCtl->aIfs[1].uATARegDevCtl &= ~ATA_DEVCTL_HOB;
4316	pCtl->aIfs[0].uATARegNSectorHOB = pCtl->aIfs[0].uATARegNSector;
4317	pCtl->aIfs[1].uATARegNSectorHOB = pCtl->aIfs[1].uATARegNSector;
4318	pCtl->aIfs[0].uATARegNSector = val;
4319	pCtl->aIfs[1].uATARegNSector = val;
4320	break;
4321	case 3: /* sector number */
4322	pCtl->aIfs[0].uATARegDevCtl &= ~ATA_DEVCTL_HOB;
4323	pCtl->aIfs[1].uATARegDevCtl &= ~ATA_DEVCTL_HOB;
4324	pCtl->aIfs[0].uATARegSectorHOB = pCtl->aIfs[0].uATARegSector;
4325	pCtl->aIfs[1].uATARegSectorHOB = pCtl->aIfs[1].uATARegSector;
4326	pCtl->aIfs[0].uATARegSector = val;
4327	pCtl->aIfs[1].uATARegSector = val;
4328	break;
4329	case 4: /* cylinder low */
4330	pCtl->aIfs[0].uATARegDevCtl &= ~ATA_DEVCTL_HOB;
4331	pCtl->aIfs[1].uATARegDevCtl &= ~ATA_DEVCTL_HOB;
4332	pCtl->aIfs[0].uATARegLCylHOB = pCtl->aIfs[0].uATARegLCyl;
4333	pCtl->aIfs[1].uATARegLCylHOB = pCtl->aIfs[1].uATARegLCyl;
4334	pCtl->aIfs[0].uATARegLCyl = val;
4335	pCtl->aIfs[1].uATARegLCyl = val;
4336	break;
4337	case 5: /* cylinder high */
4338	pCtl->aIfs[0].uATARegDevCtl &= ~ATA_DEVCTL_HOB;
4339	pCtl->aIfs[1].uATARegDevCtl &= ~ATA_DEVCTL_HOB;
4340	pCtl->aIfs[0].uATARegHCylHOB = pCtl->aIfs[0].uATARegHCyl;
4341	pCtl->aIfs[1].uATARegHCylHOB = pCtl->aIfs[1].uATARegHCyl;
4342	pCtl->aIfs[0].uATARegHCyl = val;
4343	pCtl->aIfs[1].uATARegHCyl = val;
4344	break;
4345	case 6: /* drive/head */
4346	pCtl->aIfs[0].uATARegSelect = (val & ~0x10) \| 0xa0;
4347	pCtl->aIfs[1].uATARegSelect = (val \| 0x10) \| 0xa0;
4348	if (((val >> 4) & 1) != pCtl->iSelectedIf)
4349	{
4350	PPDMDEVINS pDevIns = CONTROLLER_2_DEVINS(pCtl);
4351
4352	/* select another drive */
4353	pCtl->iSelectedIf = (val >> 4) & 1;
4354	/* The IRQ line is multiplexed between the two drives, so
4355	* update the state when switching to another drive. Only need
4356	* to update interrupt line if it is enabled and there is a
4357	* state change. */
4358	if ( !(pCtl->aIfs[pCtl->iSelectedIf].uATARegDevCtl & ATA_DEVCTL_DISABLE_IRQ)
4359	&& ( pCtl->aIfs[pCtl->iSelectedIf].fIrqPending
4360	!= pCtl->aIfs[pCtl->iSelectedIf ^ 1].fIrqPending))
4361	{
4362	if (pCtl->aIfs[pCtl->iSelectedIf].fIrqPending)
4363	{
4364	Log2(("%s: LUN#%d asserting IRQ (drive select change)\n", __FUNCTION__, pCtl->aIfs[pCtl->iSelectedIf].iLUN));
4365	/* The BMDMA unit unconditionally sets BM_STATUS_INT if
4366	* the interrupt line is asserted. It monitors the line
4367	* for a rising edge. */
4368	pCtl->BmDma.u8Status \|= BM_STATUS_INT;
4369	if (pCtl->irq == 16)
4370	PDMDevHlpPCISetIrq(pDevIns, 0, 1);
4371	else
4372	PDMDevHlpISASetIrq(pDevIns, pCtl->irq, 1);
4373	}
4374	else
4375	{
4376	Log2(("%s: LUN#%d deasserting IRQ (drive select change)\n", __FUNCTION__, pCtl->aIfs[pCtl->iSelectedIf].iLUN));
4377	if (pCtl->irq == 16)
4378	PDMDevHlpPCISetIrq(pDevIns, 0, 0);
4379	else
4380	PDMDevHlpISASetIrq(pDevIns, pCtl->irq, 0);
4381	}
4382	}
4383	}
4384	break;
4385	default:
4386	case 7: /* command */
4387	/* ignore commands to non-existent device */
4388	if (pCtl->iSelectedIf && !pCtl->aIfs[pCtl->iSelectedIf].pDrvMedia)
4389	break;
4390	#ifndef IN_RING3
4391	/* Don't do anything complicated in GC */
4392	return VINF_IOM_R3_IOPORT_WRITE;
4393	#else /* IN_RING3 */
4394	ataR3ParseCmd(&pCtl->aIfs[pCtl->iSelectedIf], val);
4395	#endif /* !IN_RING3 */
4396	}
4397	return VINF_SUCCESS;
4398	}
4399
4400
4401	static int ataIOPortReadU8(PATACONTROLLER pCtl, uint32_t addr, uint32_t *pu32)
4402	{
4403	ATADevState *s = &pCtl->aIfs[pCtl->iSelectedIf];
4404	uint32_t val;
4405	bool fHOB;
4406
4407	/* Check if the guest is reading from a non-existent device. */
4408	if (!s->pDrvMedia)
4409	{
4410	if (pCtl->iSelectedIf) /* Device 1 selected, Device 0 responding for it. */
4411	{
4412	if (!pCtl->aIfs[0].pDrvMedia) /** @todo this case should never get here! */
4413	{
4414	Log2(("%s: addr=%#x: no device on channel\n", __FUNCTION__, addr));
4415	return VERR_IOM_IOPORT_UNUSED;
4416	}
4417	if (((addr & 7) != 1) && pCtl->aIfs[0].fATAPI) {
4418	Log2(("%s: addr=%#x, val=0: LUN#%d not attached/LUN#%d ATAPI\n", __FUNCTION__, addr,
4419	s->iLUN, pCtl->aIfs[0].iLUN));
4420	*pu32 = 0;
4421	return VINF_SUCCESS;
4422	}
4423	/* Else handle normally. */
4424	}
4425	else /* Device 0 selected (but not present). */
4426	{
4427	Log2(("%s: addr=%#x: LUN#%d not attached\n", __FUNCTION__, addr, s->iLUN));
4428	return VERR_IOM_IOPORT_UNUSED;
4429	}
4430	}
4431	fHOB = !!(s->uATARegDevCtl & (1 << 7));
4432	switch (addr & 7)
4433	{
4434	case 0: /* data register */
4435	val = 0xff;
4436	break;
4437	case 1: /* error register */
4438	/* The ATA specification is very terse when it comes to specifying
4439	* the precise effects of reading back the error/feature register.
4440	* The error register (read-only) shares the register number with
4441	* the feature register (write-only), so it seems that it's not
4442	* necessary to support the usual HOB readback here. */
4443	if (!s->pDrvMedia)
4444	val = 0;
4445	else
4446	val = s->uATARegError;
4447	break;
4448	case 2: /* sector count */
4449	if (fHOB)
4450	val = s->uATARegNSectorHOB;
4451	else
4452	val = s->uATARegNSector;
4453	break;
4454	case 3: /* sector number */
4455	if (fHOB)
4456	val = s->uATARegSectorHOB;
4457	else
4458	val = s->uATARegSector;
4459	break;
4460	case 4: /* cylinder low */
4461	if (fHOB)
4462	val = s->uATARegLCylHOB;
4463	else
4464	val = s->uATARegLCyl;
4465	break;
4466	case 5: /* cylinder high */
4467	if (fHOB)
4468	val = s->uATARegHCylHOB;
4469	else
4470	val = s->uATARegHCyl;
4471	break;
4472	case 6: /* drive/head */
4473	/* This register must always work as long as there is at least
4474	* one drive attached to the controller. It is common between
4475	* both drives anyway (completely identical content). */
4476	if (!pCtl->aIfs[0].pDrvMedia && !pCtl->aIfs[1].pDrvMedia)
4477	val = 0;
4478	else
4479	val = s->uATARegSelect;
4480	break;
4481	default:
4482	case 7: /* primary status */
4483	{
4484	/* Counter for number of busy status seen in GC in a row. */
4485	static unsigned cBusy = 0;
4486
4487	if (!s->pDrvMedia)
4488	val = 0;
4489	else
4490	val = s->uATARegStatus;
4491
4492	/* Give the async I/O thread an opportunity to make progress,
4493	* don't let it starve by guests polling frequently. EMT has a
4494	* lower priority than the async I/O thread, but sometimes the
4495	* host OS doesn't care. With some guests we are only allowed to
4496	* be busy for about 5 milliseconds in some situations. Note that
4497	* this is no guarantee for any other VBox thread getting
4498	* scheduled, so this just lowers the CPU load a bit when drives
4499	* are busy. It cannot help with timing problems. */
4500	if (val & ATA_STAT_BUSY)
4501	{
4502	#ifdef IN_RING3
4503	cBusy = 0;
4504	PDMCritSectLeave(&pCtl->lock);
4505
4506	#ifndef RT_OS_WINDOWS
4507	/*
4508	* The thread might be stuck in an I/O operation
4509	* due to a high I/O load on the host. (see @bugref{3301})
4510	* To perform the reset successfully
4511	* we interrupt the operation by sending a signal to the thread
4512	* if the thread didn't responded in 10ms.
4513	* This works only on POSIX hosts (Windows has a CancelSynchronousIo function which
4514	* does the same but it was introduced with Vista) but so far
4515	* this hang was only observed on Linux and Mac OS X.
4516	*
4517	* This is a workaround and needs to be solved properly.
4518	*/
4519	if (pCtl->fReset)
4520	{
4521	uint64_t u64ResetTimeStop = RTTimeMilliTS();
4522
4523	if ((u64ResetTimeStop - pCtl->u64ResetTime) >= 10)
4524	{
4525	LogRel(("PIIX3 ATA LUN#%d: Async I/O thread probably stuck in operation, interrupting\n", s->iLUN));
4526	pCtl->u64ResetTime = u64ResetTimeStop;
4527	RTThreadPoke(pCtl->AsyncIOThread);
4528	}
4529	}
4530	#endif
4531
4532	RTThreadYield();
4533
4534	{
4535	STAM_PROFILE_START(&pCtl->StatLockWait, a);
4536	PDMCritSectEnter(&pCtl->lock, VINF_SUCCESS);
4537	STAM_PROFILE_STOP(&pCtl->StatLockWait, a);
4538	}
4539
4540	val = s->uATARegStatus;
4541	#else /* !IN_RING3 */
4542	/* Cannot yield CPU in raw-mode and ring-0 context. And switching
4543	* to host context for each and every busy status is too costly,
4544	* especially on SMP systems where we don't gain much by
4545	* yielding the CPU to someone else. */
4546	if (++cBusy >= 20)
4547	{
4548	cBusy = 0;
4549	return VINF_IOM_R3_IOPORT_READ;
4550	}
4551	#endif /* !IN_RING3 */
4552	}
4553	else
4554	cBusy = 0;
4555	ataUnsetIRQ(s);
4556	break;
4557	}
4558	}
4559	Log2(("%s: LUN#%d addr=%#x val=%#04x\n", __FUNCTION__, s->iLUN, addr, val));
4560	*pu32 = val;
4561	return VINF_SUCCESS;
4562	}
4563
4564
4565	static uint32_t ataStatusRead(PATACONTROLLER pCtl, uint32_t addr)
4566	{
4567	ATADevState *s = &pCtl->aIfs[pCtl->iSelectedIf];
4568	uint32_t val;
4569
4570	//@todo: The handler should not be even registered if there
4571	// is no device on an IDE channel.
4572	if (!pCtl->aIfs[0].pDrvMedia && !pCtl->aIfs[1].pDrvMedia)
4573	val = 0xff;
4574	else if (pCtl->iSelectedIf == 1 && !s->pDrvMedia)
4575	val = 0; /* Device 1 selected, Device 0 responding for it. */
4576	else
4577	val = s->uATARegStatus;
4578	Log2(("%s: addr=%#x val=%#04x\n", __FUNCTION__, addr, val));
4579	return val;
4580	}
4581
4582	static int ataControlWrite(PATACONTROLLER pCtl, uint32_t addr, uint32_t val)
4583	{
4584	#ifndef IN_RING3
4585	if ((val ^ pCtl->aIfs[0].uATARegDevCtl) & ATA_DEVCTL_RESET)
4586	return VINF_IOM_R3_IOPORT_WRITE; /* The RESET stuff is too complicated for RC+R0. */
4587	#endif /* !IN_RING3 */
4588
4589	Log2(("%s: addr=%#x val=%#04x\n", __FUNCTION__, addr, val));
4590	/* RESET is common for both drives attached to a controller. */
4591	if ( !(pCtl->aIfs[0].uATARegDevCtl & ATA_DEVCTL_RESET)
4592	&& (val & ATA_DEVCTL_RESET))
4593	{
4594	#ifdef IN_RING3
4595	/* Software RESET low to high */
4596	int32_t uCmdWait0 = -1;
4597	int32_t uCmdWait1 = -1;
4598	uint64_t uNow = RTTimeNanoTS();
4599	if (pCtl->aIfs[0].u64CmdTS)
4600	uCmdWait0 = (uNow - pCtl->aIfs[0].u64CmdTS) / 1000;
4601	if (pCtl->aIfs[1].u64CmdTS)
4602	uCmdWait1 = (uNow - pCtl->aIfs[1].u64CmdTS) / 1000;
4603	LogRel(("PIIX3 ATA: Ctl#%d: RESET, DevSel=%d AIOIf=%d CmdIf0=%#04x (%d usec ago) CmdIf1=%#04x (%d usec ago)\n",
4604	ATACONTROLLER_IDX(pCtl), pCtl->iSelectedIf, pCtl->iAIOIf,
4605	pCtl->aIfs[0].uATARegCommand, uCmdWait0,
4606	pCtl->aIfs[1].uATARegCommand, uCmdWait1));
4607	pCtl->fReset = true;
4608	/* Everything must be done after the reset flag is set, otherwise
4609	* there are unavoidable races with the currently executing request
4610	* (which might just finish in the mean time). */
4611	pCtl->fChainedTransfer = false;
4612	for (uint32_t i = 0; i < RT_ELEMENTS(pCtl->aIfs); i++)
4613	{
4614	ataR3ResetDevice(&pCtl->aIfs[i]);
4615	/* The following cannot be done using ataSetStatusValue() since the
4616	* reset flag is already set, which suppresses all status changes. */
4617	pCtl->aIfs[i].uATARegStatus = ATA_STAT_BUSY \| ATA_STAT_SEEK;
4618	Log2(("%s: LUN#%d status %#04x\n", __FUNCTION__, pCtl->aIfs[i].iLUN, pCtl->aIfs[i].uATARegStatus));
4619	pCtl->aIfs[i].uATARegError = 0x01;
4620	}
4621	ataR3AsyncIOClearRequests(pCtl);
4622	Log2(("%s: Ctl#%d: message to async I/O thread, resetA\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl)));
4623	if (val & ATA_DEVCTL_HOB)
4624	{
4625	val &= ~ATA_DEVCTL_HOB;
4626	Log2(("%s: ignored setting HOB\n", __FUNCTION__));
4627	}
4628
4629	/* Save the timestamp we started the reset. */
4630	pCtl->u64ResetTime = RTTimeMilliTS();
4631
4632	/* Issue the reset request now. */
4633	ataHCAsyncIOPutRequest(pCtl, &g_ataResetARequest);
4634	#else /* !IN_RING3 */
4635	AssertMsgFailed(("RESET handling is too complicated for GC\n"));
4636	#endif /* IN_RING3 */
4637	}
4638	else if ( (pCtl->aIfs[0].uATARegDevCtl & ATA_DEVCTL_RESET)
4639	&& !(val & ATA_DEVCTL_RESET))
4640	{
4641	#ifdef IN_RING3
4642	/* Software RESET high to low */
4643	Log(("%s: deasserting RESET\n", __FUNCTION__));
4644	Log2(("%s: Ctl#%d: message to async I/O thread, resetC\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl)));
4645	if (val & ATA_DEVCTL_HOB)
4646	{
4647	val &= ~ATA_DEVCTL_HOB;
4648	Log2(("%s: ignored setting HOB\n", __FUNCTION__));
4649	}
4650	ataHCAsyncIOPutRequest(pCtl, &g_ataResetCRequest);
4651	#else /* !IN_RING3 */
4652	AssertMsgFailed(("RESET handling is too complicated for GC\n"));
4653	#endif /* IN_RING3 */
4654	}
4655
4656	/* Change of interrupt disable flag. Update interrupt line if interrupt
4657	* is pending on the current interface. */
4658	if ( ((val ^ pCtl->aIfs[0].uATARegDevCtl) & ATA_DEVCTL_DISABLE_IRQ)
4659	&& pCtl->aIfs[pCtl->iSelectedIf].fIrqPending)
4660	{
4661	if (!(val & ATA_DEVCTL_DISABLE_IRQ))
4662	{
4663	Log2(("%s: LUN#%d asserting IRQ (interrupt disable change)\n", __FUNCTION__, pCtl->aIfs[pCtl->iSelectedIf].iLUN));
4664	/* The BMDMA unit unconditionally sets BM_STATUS_INT if the
4665	* interrupt line is asserted. It monitors the line for a rising
4666	* edge. */
4667	pCtl->BmDma.u8Status \|= BM_STATUS_INT;
4668	if (pCtl->irq == 16)
4669	PDMDevHlpPCISetIrq(CONTROLLER_2_DEVINS(pCtl), 0, 1);
4670	else
4671	PDMDevHlpISASetIrq(CONTROLLER_2_DEVINS(pCtl), pCtl->irq, 1);
4672	}
4673	else
4674	{
4675	Log2(("%s: LUN#%d deasserting IRQ (interrupt disable change)\n", __FUNCTION__, pCtl->aIfs[pCtl->iSelectedIf].iLUN));
4676	if (pCtl->irq == 16)
4677	PDMDevHlpPCISetIrq(CONTROLLER_2_DEVINS(pCtl), 0, 0);
4678	else
4679	PDMDevHlpISASetIrq(CONTROLLER_2_DEVINS(pCtl), pCtl->irq, 0);
4680	}
4681	}
4682
4683	if (val & ATA_DEVCTL_HOB)
4684	Log2(("%s: set HOB\n", __FUNCTION__));
4685
4686	pCtl->aIfs[0].uATARegDevCtl = val;
4687	pCtl->aIfs[1].uATARegDevCtl = val;
4688
4689	return VINF_SUCCESS;
4690	}
4691
4692	#if defined(IN_RING0) \|\| defined(IN_RING3)
4693
4694	static void ataHCPIOTransfer(PATACONTROLLER pCtl)
4695	{
4696	ATADevState *s;
4697
4698	s = &pCtl->aIfs[pCtl->iAIOIf];
4699	Log3(("%s: if=%p\n", __FUNCTION__, s));
4700
4701	if (s->cbTotalTransfer && s->iIOBufferCur > s->iIOBufferEnd)
4702	{
4703	# ifdef IN_RING3
4704	LogRel(("PIIX3 ATA: LUN#%d: %s data in the middle of a PIO transfer - VERY SLOW\n", s->iLUN, s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE ? "loading" : "storing"));
4705	/* Any guest OS that triggers this case has a pathetic ATA driver.
4706	* In a real system it would block the CPU via IORDY, here we do it
4707	* very similarly by not continuing with the current instruction
4708	* until the transfer to/from the storage medium is completed. */
4709	if (s->iSourceSink != ATAFN_SS_NULL)
4710	{
4711	bool fRedo;
4712	uint8_t status = s->uATARegStatus;
4713	ataSetStatusValue(s, ATA_STAT_BUSY);
4714	Log2(("%s: calling source/sink function\n", __FUNCTION__));
4715	fRedo = g_apfnSourceSinkFuncs[s->iSourceSink](s);
4716	pCtl->fRedo = fRedo;
4717	if (RT_UNLIKELY(fRedo))
4718	return;
4719	ataSetStatusValue(s, status);
4720	s->iIOBufferCur = 0;
4721	s->iIOBufferEnd = s->cbElementaryTransfer;
4722	}
4723	# else
4724	AssertReleaseFailed();
4725	# endif
4726	}
4727	if (s->cbTotalTransfer)
4728	{
4729	if (s->fATAPITransfer)
4730	ataHCPIOTransferLimitATAPI(s);
4731
4732	if (s->uTxDir == PDMMEDIATXDIR_TO_DEVICE && s->cbElementaryTransfer > s->cbTotalTransfer)
4733	s->cbElementaryTransfer = s->cbTotalTransfer;
4734
4735	Log2(("%s: %s tx_size=%d elem_tx_size=%d index=%d end=%d\n",
4736	__FUNCTION__, s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE ? "T2I" : "I2T",
4737	s->cbTotalTransfer, s->cbElementaryTransfer,
4738	s->iIOBufferCur, s->iIOBufferEnd));
4739	ataHCPIOTransferStart(s, s->iIOBufferCur, s->cbElementaryTransfer);
4740	s->cbTotalTransfer -= s->cbElementaryTransfer;
4741	s->iIOBufferCur += s->cbElementaryTransfer;
4742
4743	if (s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE && s->cbElementaryTransfer > s->cbTotalTransfer)
4744	s->cbElementaryTransfer = s->cbTotalTransfer;
4745	}
4746	else
4747	ataHCPIOTransferStop(s);
4748	}
4749
4750
4751	DECLINLINE(void) ataHCPIOTransferFinish(PATACONTROLLER pCtl, ATADevState *s)
4752	{
4753	/* Do not interfere with RESET processing if the PIO transfer finishes
4754	* while the RESET line is asserted. */
4755	if (pCtl->fReset)
4756	{
4757	Log2(("%s: Ctl#%d: suppressed continuing PIO transfer as RESET is active\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl)));
4758	return;
4759	}
4760
4761	if ( s->uTxDir == PDMMEDIATXDIR_TO_DEVICE
4762	\|\| ( s->iSourceSink != ATAFN_SS_NULL
4763	&& s->iIOBufferCur >= s->iIOBufferEnd))
4764	{
4765	/* Need to continue the transfer in the async I/O thread. This is
4766	* the case for write operations or generally for not yet finished
4767	* transfers (some data might need to be read). */
4768	ataUnsetStatus(s, ATA_STAT_READY \| ATA_STAT_DRQ);
4769	ataSetStatus(s, ATA_STAT_BUSY);
4770
4771	Log2(("%s: Ctl#%d: message to async I/O thread, continuing PIO transfer\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl)));
4772	ataHCAsyncIOPutRequest(pCtl, &g_ataPIORequest);
4773	}
4774	else
4775	{
4776	/* Either everything finished (though some data might still be pending)
4777	* or some data is pending before the next read is due. */
4778
4779	/* Continue a previously started transfer. */
4780	ataUnsetStatus(s, ATA_STAT_DRQ);
4781	ataSetStatus(s, ATA_STAT_READY);
4782
4783	if (s->cbTotalTransfer)
4784	{
4785	/* There is more to transfer, happens usually for large ATAPI
4786	* reads - the protocol limits the chunk size to 65534 bytes. */
4787	ataHCPIOTransfer(pCtl);
4788	ataHCSetIRQ(s);
4789	}
4790	else
4791	{
4792	Log2(("%s: Ctl#%d: skipping message to async I/O thread, ending PIO transfer\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl)));
4793	/* Finish PIO transfer. */
4794	ataHCPIOTransfer(pCtl);
4795	Assert(!pCtl->fRedo);
4796	}
4797	}
4798	}
4799
4800	#endif /* IN_RING0 \|\| IN_RING3 */
4801
4802	/**
4803	* Fallback for ataCopyPioData124 that handles unaligned and out of bounds cases.
4804	*
4805	* @param pIf The device interface to work with.
4806	* @param pbDst The destination buffer.
4807	* @param pbSrc The source buffer.
4808	* @param cbCopy The number of bytes to copy, either 1, 2 or 4 bytes.
4809	*/
4810	DECL_NO_INLINE(static, void) ataCopyPioData124Slow(ATADevState pIf, uint8_t pbDst, const uint8_t *pbSrc, uint32_t cbCopy)
4811	{
4812	uint32_t const offStart = pIf->iIOBufferPIODataStart;
4813	uint32_t const offNext = offStart + cbCopy;
4814
4815	if (offStart + cbCopy > pIf->cbIOBuffer)
4816	{
4817	Log(("%s: cbCopy=%#x offStart=%#x cbIOBuffer=%#x offNext=%#x (iIOBufferPIODataEnd=%#x)\n",
4818	__FUNCTION__, cbCopy, offStart, pIf->cbIOBuffer, offNext, pIf->iIOBufferPIODataEnd));
4819	if (offStart < pIf->cbIOBuffer)
4820	cbCopy = pIf->cbIOBuffer - offStart;
4821	else
4822	cbCopy = 0;
4823	}
4824
4825	switch (cbCopy)
4826	{
4827	case 4: pbDst[3] = pbSrc[3]; /* fall thru */
4828	case 3: pbDst[2] = pbSrc[2]; /* fall thru */
4829	case 2: pbDst[1] = pbSrc[1]; /* fall thru */
4830	case 1: pbDst[0] = pbSrc[0]; /* fall thru */
4831	case 0: break;
4832	default: AssertFailed(); /* impossible */
4833	}
4834
4835	pIf->iIOBufferPIODataStart = offNext;
4836
4837	}
4838
4839
4840	/**
4841	* Work for ataDataWrite & ataDataRead that copies data without using memcpy.
4842	*
4843	* This also updates pIf->iIOBufferPIODataStart.
4844	*
4845	* The two buffers are either stack (32-bit aligned) or somewhere within
4846	* pIf->pbIOBuffer.
4847	*
4848	* @param pIf The device interface to work with.
4849	* @param pbDst The destination buffer.
4850	* @param pbSrc The source buffer.
4851	* @param cbCopy The number of bytes to copy, either 1, 2 or 4 bytes.
4852	*/
4853	DECLINLINE(void) ataCopyPioData124(ATADevState pIf, uint8_t pbDst, const uint8_t *pbSrc, uint32_t cbCopy)
4854	{
4855	/*
4856	* Quick bounds checking can be done by checking that the pbIOBuffer offset
4857	* (iIOBufferPIODataStart) is aligned at the transfer size (which is ASSUMED
4858	* to be 1, 2 or 4). However, since we're paranoid and don't currently
4859	* trust iIOBufferPIODataEnd to be within bounds, we current check against the
4860	* IO buffer size too.
4861	*/
4862	Assert(cbCopy == 1 \|\| cbCopy == 2 \|\| cbCopy == 4);
4863	uint32_t const offStart = pIf->iIOBufferPIODataStart;
4864	if (RT_LIKELY( !(offStart & (cbCopy - 1))
4865	&& offStart + cbCopy <= pIf->cbIOBuffer))
4866	{
4867	switch (cbCopy)
4868	{
4869	case 4: (uint32_t )pbDst = (uint32_t const )pbSrc; break;
4870	case 2: (uint16_t )pbDst = (uint16_t const )pbSrc; break;
4871	case 1: pbDst = pbSrc; break;
4872	}
4873	pIf->iIOBufferPIODataStart = offStart + cbCopy;
4874	}
4875	else
4876	ataCopyPioData124Slow(pIf, pbDst, pbSrc, cbCopy);
4877	}
4878
4879
4880	/**
4881	* Port I/O Handler for primary port range OUT operations.
4882	* @see FNIOMIOPORTOUT for details.
4883	*/
4884	PDMBOTHCBDECL(int) ataIOPortWrite1Data(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
4885	{
4886	uint32_t i = (uint32_t)(uintptr_t)pvUser;
4887	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
4888	PATACONTROLLER pCtl = &pThis->aCts[i];
4889
4890	Assert(i < 2);
4891	Assert(Port == pCtl->IOPortBase1);
4892	Assert(cb == 2 \|\| cb == 4); /* Writes to the data port may be 16-bit or 32-bit. */
4893
4894	int rc = PDMCritSectEnter(&pCtl->lock, VINF_IOM_R3_IOPORT_WRITE);
4895	if (rc == VINF_SUCCESS)
4896	{
4897	ATADevState *s = &pCtl->aIfs[pCtl->iSelectedIf];
4898
4899	if (s->iIOBufferPIODataStart < s->iIOBufferPIODataEnd)
4900	{
4901	Assert(s->uTxDir == PDMMEDIATXDIR_TO_DEVICE);
4902	uint8_t *pbDst = s->CTX_SUFF(pbIOBuffer) + s->iIOBufferPIODataStart;
4903	uint8_t const pbSrc = (uint8_t const )&u32;
4904
4905	#ifdef IN_RC
4906	/* Raw-mode: The ataHCPIOTransfer following the last transfer unit
4907	requires I/O thread signalling, we must go to ring-3 for that. */
4908	if (s->iIOBufferPIODataStart + cb < s->iIOBufferPIODataEnd)
4909	ataCopyPioData124(s, pbDst, pbSrc, cb);
4910	else
4911	rc = VINF_IOM_R3_IOPORT_WRITE;
4912
4913	#elif defined(IN_RING0)
4914	/* Ring-0: We can do I/O thread signalling here, however for paranoid reasons
4915	triggered by a special case in ataHCPIOTransferFinish, we take extra care here. */
4916	if (s->iIOBufferPIODataStart + cb < s->iIOBufferPIODataEnd)
4917	ataCopyPioData124(s, pbDst, pbSrc, cb);
4918	else if (s->uTxDir == PDMMEDIATXDIR_TO_DEVICE) /* paranoia */
4919	{
4920	ataCopyPioData124(s, pbDst, pbSrc, cb);
4921	ataHCPIOTransferFinish(pCtl, s);
4922	}
4923	else
4924	{
4925	Log(("%s: Unexpected\n",__FUNCTION__));
4926	rc = VINF_IOM_R3_IOPORT_WRITE;
4927	}
4928
4929	#else /* IN_RING 3*/
4930	ataCopyPioData124(s, pbDst, pbSrc, cb);
4931	if (s->iIOBufferPIODataStart >= s->iIOBufferPIODataEnd)
4932	ataHCPIOTransferFinish(pCtl, s);
4933	#endif /* IN_RING 3*/
4934	}
4935	else
4936	Log2(("%s: DUMMY data\n", __FUNCTION__));
4937
4938	Log3(("%s: addr=%#x val=%.*Rhxs rc=%d\n", __FUNCTION__, Port, cb, &u32, rc));
4939	PDMCritSectLeave(&pCtl->lock);
4940	}
4941	else
4942	Log3(("%s: addr=%#x -> %d\n", __FUNCTION__, Port, rc));
4943	return rc;
4944	}
4945
4946
4947	/**
4948	* Port I/O Handler for primary port range IN operations.
4949	* @see FNIOMIOPORTIN for details.
4950	*/
4951	PDMBOTHCBDECL(int) ataIOPortRead1Data(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
4952	{
4953	uint32_t i = (uint32_t)(uintptr_t)pvUser;
4954	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
4955	PATACONTROLLER pCtl = &pThis->aCts[i];
4956
4957	Assert(i < 2);
4958	Assert(Port == pCtl->IOPortBase1);
4959
4960	/* Reads from the data register may be 16-bit or 32-bit. Byte accesses are
4961	upgraded to word. */
4962	Assert(cb == 1 \|\| cb == 2 \|\| cb == 4);
4963	uint32_t cbActual = cb != 1 ? cb : 2;
4964	*pu32 = 0;
4965
4966	int rc = PDMCritSectEnter(&pCtl->lock, VINF_IOM_R3_IOPORT_READ);
4967	if (rc == VINF_SUCCESS)
4968	{
4969	ATADevState *s = &pCtl->aIfs[pCtl->iSelectedIf];
4970
4971	if (s->iIOBufferPIODataStart < s->iIOBufferPIODataEnd)
4972	{
4973	Assert(s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE);
4974	uint8_t const *pbSrc = s->CTX_SUFF(pbIOBuffer) + s->iIOBufferPIODataStart;
4975	uint8_t pbDst = (uint8_t )pu32;
4976
4977	#ifdef IN_RC
4978	/* All but the last transfer unit is simple enough for RC, but
4979	* sending a request to the async IO thread is too complicated. */
4980	if (s->iIOBufferPIODataStart + cbActual < s->iIOBufferPIODataEnd)
4981	ataCopyPioData124(s, pbDst, pbSrc, cbActual);
4982	else
4983	rc = VINF_IOM_R3_IOPORT_READ;
4984
4985	#elif defined(IN_RING0)
4986	/* Ring-0: We can do I/O thread signalling here. However there is one
4987	case in ataHCPIOTransfer that does a LogRel and would (but not from
4988	here) call directly into the driver code. We detect that odd case
4989	here cand return to ring-3 to handle it. */
4990	if (s->iIOBufferPIODataStart + cbActual < s->iIOBufferPIODataEnd)
4991	ataCopyPioData124(s, pbDst, pbSrc, cbActual);
4992	else if ( s->cbTotalTransfer == 0
4993	\|\| s->iSourceSink != ATAFN_SS_NULL
4994	\|\| s->iIOBufferCur <= s->iIOBufferEnd)
4995	{
4996	ataCopyPioData124(s, pbDst, pbSrc, cbActual);
4997	ataHCPIOTransferFinish(pCtl, s);
4998	}
4999	else
5000	{
5001	Log(("%s: Unexpected\n",__FUNCTION__));
5002	rc = VINF_IOM_R3_IOPORT_READ;
5003	}
5004
5005	#else /* IN_RING3 */
5006	ataCopyPioData124(s, pbDst, pbSrc, cbActual);
5007	if (s->iIOBufferPIODataStart >= s->iIOBufferPIODataEnd)
5008	ataHCPIOTransferFinish(pCtl, s);
5009	#endif /* IN_RING3 */
5010
5011	/* Just to be on the safe side (caller takes care of this, really). */
5012	if (cb == 1)
5013	*pu32 &= 0xff;
5014	}
5015	else
5016	{
5017	Log2(("%s: DUMMY data\n", __FUNCTION__));
5018	memset(pu32, 0xff, cb);
5019	}
5020	Log3(("%s: addr=%#x val=%.*Rhxs rc=%d\n", __FUNCTION__, Port, cb, pu32, rc));
5021
5022	PDMCritSectLeave(&pCtl->lock);
5023	}
5024	else
5025	Log3(("%s: addr=%#x -> %d\n", __FUNCTION__, Port, rc));
5026
5027	return rc;
5028	}
5029
5030
5031	/**
5032	* Port I/O Handler for primary port range IN string operations.
5033	* @see FNIOMIOPORTINSTRING for details.
5034	*/
5035	PDMBOTHCBDECL(int) ataIOPortReadStr1Data(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint8_t pbDst,
5036	uint32_t *pcTransfers, unsigned cb)
5037	{
5038	uint32_t i = (uint32_t)(uintptr_t)pvUser;
5039	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
5040	PATACONTROLLER pCtl = &pThis->aCts[i];
5041
5042	Assert(i < 2);
5043	Assert(Port == pCtl->IOPortBase1);
5044	Assert(*pcTransfers > 0);
5045
5046	int rc;
5047	if (cb == 2 \|\| cb == 4)
5048	{
5049	rc = PDMCritSectEnter(&pCtl->lock, VINF_IOM_R3_IOPORT_READ);
5050	if (rc == VINF_SUCCESS)
5051	{
5052	ATADevState *s = &pCtl->aIfs[pCtl->iSelectedIf];
5053
5054	uint32_t const offStart = s->iIOBufferPIODataStart;
5055	if (offStart < s->iIOBufferPIODataEnd)
5056	{
5057	/*
5058	* Figure how much we can copy. Usually it's the same as the request.
5059	* The last transfer unit cannot be handled in RC, as it involves
5060	* thread communication. In R0 we let the non-string callback handle it,
5061	* and ditto for overflows/dummy data.
5062	*/
5063	uint32_t cAvailable = (s->iIOBufferPIODataEnd - offStart) / cb;
5064	#ifndef IN_RING3
5065	if (cAvailable > 0)
5066	cAvailable--;
5067	#endif
5068	uint32_t const cRequested = *pcTransfers;
5069	if (cAvailable > cRequested)
5070	cAvailable = cRequested;
5071	uint32_t const cbTransfer = cAvailable * cb;
5072	if ( offStart + cbTransfer <= s->cbIOBuffer
5073	&& cbTransfer > 0)
5074	{
5075	/*
5076	* Do the transfer.
5077	*/
5078	uint8_t const *pbSrc = s->CTX_SUFF(pbIOBuffer) + offStart;
5079	memcpy(pbDst, pbSrc, cbTransfer);
5080	Log3(("%s: addr=%#x cb=%#x cbTransfer=%#x val=%.*Rhxd\n",
5081	__FUNCTION__, Port, cb, cbTransfer, cbTransfer, pbSrc));
5082	s->iIOBufferPIODataStart = offStart + cbTransfer;
5083
5084	#ifdef IN_RING3
5085	if (s->iIOBufferPIODataStart >= s->iIOBufferPIODataEnd)
5086	ataHCPIOTransferFinish(pCtl, s);
5087	#endif
5088	*pcTransfers = cRequested - cAvailable;
5089	}
5090	else
5091	Log2(("ataIOPortReadStr1Data: DUMMY/Overflow!\n"));
5092	}
5093	else
5094	{
5095	/*
5096	* Dummy read (shouldn't happen) return 0xff like the non-string handler.
5097	*/
5098	Log2(("ataIOPortReadStr1Data: DUMMY data (%#x bytes)\n", pcTransfers cb));
5099	memset(pbDst, 0xff, pcTransfers cb);
5100	*pcTransfers = 0;
5101	}
5102
5103	PDMCritSectLeave(&pCtl->lock);
5104	}
5105	}
5106	/*
5107	* Let the non-string I/O callback handle 1 byte reads.
5108	*/
5109	else
5110	{
5111	Log2(("ataIOPortReadStr1Data: 1 byte read (%#x transfers)\n", *pcTransfers));
5112	AssertFailed();
5113	rc = VINF_SUCCESS;
5114	}
5115	return rc;
5116	}
5117
5118
5119	/**
5120	* Port I/O Handler for primary port range OUT string operations.
5121	* @see FNIOMIOPORTOUTSTRING for details.
5122	*/
5123	PDMBOTHCBDECL(int) ataIOPortWriteStr1Data(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint8_t const pbSrc,
5124	uint32_t *pcTransfers, unsigned cb)
5125	{
5126	uint32_t i = (uint32_t)(uintptr_t)pvUser;
5127	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
5128	PATACONTROLLER pCtl = &pThis->aCts[i];
5129
5130	Assert(i < 2);
5131	Assert(Port == pCtl->IOPortBase1);
5132	Assert(*pcTransfers > 0);
5133
5134	int rc;
5135	if (cb == 2 \|\| cb == 4)
5136	{
5137	rc = PDMCritSectEnter(&pCtl->lock, VINF_IOM_R3_IOPORT_WRITE);
5138	if (rc == VINF_SUCCESS)
5139	{
5140	ATADevState *s = &pCtl->aIfs[pCtl->iSelectedIf];
5141
5142	uint32_t const offStart = s->iIOBufferPIODataStart;
5143	if (offStart < s->iIOBufferPIODataEnd)
5144	{
5145	/*
5146	* Figure how much we can copy. Usually it's the same as the request.
5147	* The last transfer unit cannot be handled in RC, as it involves
5148	* thread communication. In R0 we let the non-string callback handle it,
5149	* and ditto for overflows/dummy data.
5150	*/
5151	uint32_t cAvailable = (s->iIOBufferPIODataEnd - offStart) / cb;
5152	#ifndef IN_RING3
5153	if (cAvailable)
5154	cAvailable--;
5155	#endif
5156	uint32_t const cRequested = *pcTransfers;
5157	if (cAvailable > cRequested)
5158	cAvailable = cRequested;
5159	uint32_t const cbTransfer = cAvailable * cb;
5160	if ( offStart + cbTransfer <= s->cbIOBuffer
5161	&& cbTransfer)
5162	{
5163	/*
5164	* Do the transfer.
5165	*/
5166	void *pvDst = s->CTX_SUFF(pbIOBuffer) + offStart;
5167	memcpy(pvDst, pbSrc, cbTransfer);
5168	Log3(("%s: addr=%#x val=%.*Rhxs\n", __FUNCTION__, Port, cbTransfer, pvDst));
5169	s->iIOBufferPIODataStart = offStart + cbTransfer;
5170
5171	#ifdef IN_RING3
5172	if (s->iIOBufferPIODataStart >= s->iIOBufferPIODataEnd)
5173	ataHCPIOTransferFinish(pCtl, s);
5174	#endif
5175	*pcTransfers = cRequested - cAvailable;
5176	}
5177	else
5178	Log2(("ataIOPortWriteStr1Data: DUMMY/Overflow!\n"));
5179	}
5180	else
5181	{
5182	Log2(("ataIOPortWriteStr1Data: DUMMY data (%#x bytes)\n", pcTransfers cb));
5183	*pcTransfers = 0;
5184	}
5185
5186	PDMCritSectLeave(&pCtl->lock);
5187	}
5188	}
5189	/*
5190	* Let the non-string I/O callback handle 1 byte reads.
5191	*/
5192	else
5193	{
5194	Log2(("ataIOPortWriteStr1Data: 1 byte write (%#x transfers)\n", *pcTransfers));
5195	AssertFailed();
5196	rc = VINF_SUCCESS;
5197	}
5198
5199	return rc;
5200	}
5201
5202
5203	#ifdef IN_RING3
5204
5205	static void ataR3DMATransferStop(ATADevState *s)
5206	{
5207	s->cbTotalTransfer = 0;
5208	s->cbElementaryTransfer = 0;
5209	s->iBeginTransfer = ATAFN_BT_NULL;
5210	s->iSourceSink = ATAFN_SS_NULL;
5211	}
5212
5213
5214	/**
5215	* Perform the entire DMA transfer in one go (unless a source/sink operation
5216	* has to be redone or a RESET comes in between). Unlike the PIO counterpart
5217	* this function cannot handle empty transfers.
5218	*
5219	* @param pCtl Controller for which to perform the transfer.
5220	*/
5221	static void ataR3DMATransfer(PATACONTROLLER pCtl)
5222	{
5223	PPDMDEVINS pDevIns = CONTROLLER_2_DEVINS(pCtl);
5224	ATADevState *s = &pCtl->aIfs[pCtl->iAIOIf];
5225	bool fRedo;
5226	RTGCPHYS32 pDesc;
5227	uint32_t cbTotalTransfer, cbElementaryTransfer;
5228	uint32_t iIOBufferCur, iIOBufferEnd;
5229	uint32_t dmalen;
5230	PDMMEDIATXDIR uTxDir;
5231	bool fLastDesc = false;
5232
5233	Assert(sizeof(BMDMADesc) == 8);
5234
5235	fRedo = pCtl->fRedo;
5236	if (RT_LIKELY(!fRedo))
5237	Assert(s->cbTotalTransfer);
5238	uTxDir = (PDMMEDIATXDIR)s->uTxDir;
5239	cbTotalTransfer = s->cbTotalTransfer;
5240	cbElementaryTransfer = s->cbElementaryTransfer;
5241	iIOBufferCur = s->iIOBufferCur;
5242	iIOBufferEnd = s->iIOBufferEnd;
5243
5244	/* The DMA loop is designed to hold the lock only when absolutely
5245	* necessary. This avoids long freezes should the guest access the
5246	* ATA registers etc. for some reason. */
5247	PDMCritSectLeave(&pCtl->lock);
5248
5249	Log2(("%s: %s tx_size=%d elem_tx_size=%d index=%d end=%d\n",
5250	__FUNCTION__, uTxDir == PDMMEDIATXDIR_FROM_DEVICE ? "T2I" : "I2T",
5251	cbTotalTransfer, cbElementaryTransfer,
5252	iIOBufferCur, iIOBufferEnd));
5253	for (pDesc = pCtl->pFirstDMADesc; pDesc <= pCtl->pLastDMADesc; pDesc += sizeof(BMDMADesc))
5254	{
5255	BMDMADesc DMADesc;
5256	RTGCPHYS32 pBuffer;
5257	uint32_t cbBuffer;
5258
5259	if (RT_UNLIKELY(fRedo))
5260	{
5261	pBuffer = pCtl->pRedoDMABuffer;
5262	cbBuffer = pCtl->cbRedoDMABuffer;
5263	fLastDesc = pCtl->fRedoDMALastDesc;
5264	}
5265	else
5266	{
5267	PDMDevHlpPhysRead(pDevIns, pDesc, &DMADesc, sizeof(BMDMADesc));
5268	pBuffer = RT_LE2H_U32(DMADesc.pBuffer);
5269	cbBuffer = RT_LE2H_U32(DMADesc.cbBuffer);
5270	fLastDesc = !!(cbBuffer & 0x80000000);
5271	cbBuffer &= 0xfffe;
5272	if (cbBuffer == 0)
5273	cbBuffer = 0x10000;
5274	if (cbBuffer > cbTotalTransfer)
5275	cbBuffer = cbTotalTransfer;
5276	}
5277
5278	while (RT_UNLIKELY(fRedo) \|\| (cbBuffer && cbTotalTransfer))
5279	{
5280	if (RT_LIKELY(!fRedo))
5281	{
5282	dmalen = RT_MIN(cbBuffer, iIOBufferEnd - iIOBufferCur);
5283	Log2(("%s: DMA desc %#010x: addr=%#010x size=%#010x orig_size=%#010x\n", __FUNCTION__,
5284	(int)pDesc, pBuffer, cbBuffer, RT_LE2H_U32(DMADesc.cbBuffer) & 0xfffe));
5285
5286	PCIATAState pATAState = PDMINS_2_DATA(pDevIns, PCIATAState );
5287	AssertPtr(pATAState);
5288	if (uTxDir == PDMMEDIATXDIR_FROM_DEVICE)
5289	PDMDevHlpPCIPhysWrite(pDevIns, pBuffer, s->CTX_SUFF(pbIOBuffer) + iIOBufferCur, dmalen);
5290	else
5291	PDMDevHlpPCIPhysRead(pDevIns, pBuffer, s->CTX_SUFF(pbIOBuffer) + iIOBufferCur, dmalen);
5292
5293	iIOBufferCur += dmalen;
5294	cbTotalTransfer -= dmalen;
5295	cbBuffer -= dmalen;
5296	pBuffer += dmalen;
5297	}
5298	if ( iIOBufferCur == iIOBufferEnd
5299	&& (uTxDir == PDMMEDIATXDIR_TO_DEVICE \|\| cbTotalTransfer))
5300	{
5301	if (uTxDir == PDMMEDIATXDIR_FROM_DEVICE && cbElementaryTransfer > cbTotalTransfer)
5302	cbElementaryTransfer = cbTotalTransfer;
5303
5304	{
5305	STAM_PROFILE_START(&pCtl->StatLockWait, a);
5306	PDMCritSectEnter(&pCtl->lock, VINF_SUCCESS);
5307	STAM_PROFILE_STOP(&pCtl->StatLockWait, a);
5308	}
5309
5310	/* The RESET handler could have cleared the DMA transfer
5311	* state (since we didn't hold the lock until just now
5312	* the guest can continue in parallel). If so, the state
5313	* is already set up so the loop is exited immediately. */
5314	if (s->iSourceSink != ATAFN_SS_NULL)
5315	{
5316	s->iIOBufferCur = iIOBufferCur;
5317	s->iIOBufferEnd = iIOBufferEnd;
5318	s->cbElementaryTransfer = cbElementaryTransfer;
5319	s->cbTotalTransfer = cbTotalTransfer;
5320	Log2(("%s: calling source/sink function\n", __FUNCTION__));
5321	fRedo = g_apfnSourceSinkFuncs[s->iSourceSink](s);
5322	if (RT_UNLIKELY(fRedo))
5323	{
5324	pCtl->pFirstDMADesc = pDesc;
5325	pCtl->pRedoDMABuffer = pBuffer;
5326	pCtl->cbRedoDMABuffer = cbBuffer;
5327	pCtl->fRedoDMALastDesc = fLastDesc;
5328	}
5329	else
5330	{
5331	cbTotalTransfer = s->cbTotalTransfer;
5332	cbElementaryTransfer = s->cbElementaryTransfer;
5333
5334	if (uTxDir == PDMMEDIATXDIR_TO_DEVICE && cbElementaryTransfer > cbTotalTransfer)
5335	cbElementaryTransfer = cbTotalTransfer;
5336	iIOBufferCur = 0;
5337	iIOBufferEnd = cbElementaryTransfer;
5338	}
5339	pCtl->fRedo = fRedo;
5340	}
5341	else
5342	{
5343	/* This forces the loop to exit immediately. */
5344	pDesc = pCtl->pLastDMADesc + 1;
5345	}
5346
5347	PDMCritSectLeave(&pCtl->lock);
5348	if (RT_UNLIKELY(fRedo))
5349	break;
5350	}
5351	}
5352
5353	if (RT_UNLIKELY(fRedo))
5354	break;
5355
5356	/* end of transfer */
5357	if (!cbTotalTransfer \|\| fLastDesc)
5358	break;
5359
5360	{
5361	STAM_PROFILE_START(&pCtl->StatLockWait, a);
5362	PDMCritSectEnter(&pCtl->lock, VINF_SUCCESS);
5363	STAM_PROFILE_STOP(&pCtl->StatLockWait, a);
5364	}
5365
5366	if (!(pCtl->BmDma.u8Cmd & BM_CMD_START) \|\| pCtl->fReset)
5367	{
5368	LogRel(("PIIX3 ATA: Ctl#%d: ABORT DMA%s\n", ATACONTROLLER_IDX(pCtl), pCtl->fReset ? " due to RESET" : ""));
5369	if (!pCtl->fReset)
5370	ataR3DMATransferStop(s);
5371	/* This forces the loop to exit immediately. */
5372	pDesc = pCtl->pLastDMADesc + 1;
5373	}
5374
5375	PDMCritSectLeave(&pCtl->lock);
5376	}
5377
5378	{
5379	STAM_PROFILE_START(&pCtl->StatLockWait, a);
5380	PDMCritSectEnter(&pCtl->lock, VINF_SUCCESS);
5381	STAM_PROFILE_STOP(&pCtl->StatLockWait, a);
5382	}
5383
5384	if (RT_UNLIKELY(fRedo))
5385	return;
5386
5387	if (fLastDesc)
5388	pCtl->BmDma.u8Status &= ~BM_STATUS_DMAING;
5389	s->cbTotalTransfer = cbTotalTransfer;
5390	s->cbElementaryTransfer = cbElementaryTransfer;
5391	s->iIOBufferCur = iIOBufferCur;
5392	s->iIOBufferEnd = iIOBufferEnd;
5393	}
5394
5395	/**
5396	* Signal PDM that we're idle (if we actually are).
5397	*
5398	* @param pCtl The controller.
5399	*/
5400	static void ataR3AsyncSignalIdle(PATACONTROLLER pCtl)
5401	{
5402	/*
5403	* Take the lock here and recheck the idle indicator to avoid
5404	* unnecessary work and racing ataR3WaitForAsyncIOIsIdle.
5405	*/
5406	int rc = PDMCritSectEnter(&pCtl->AsyncIORequestLock, VINF_SUCCESS);
5407	AssertRC(rc);
5408
5409	if ( pCtl->fSignalIdle
5410	&& ataR3AsyncIOIsIdle(pCtl, false /fStrict/))
5411	{
5412	PDMDevHlpAsyncNotificationCompleted(pCtl->pDevInsR3);
5413	RTThreadUserSignal(pCtl->AsyncIOThread); /* for ataR3Construct/ataR3ResetCommon. */
5414	}
5415
5416	rc = PDMCritSectLeave(&pCtl->AsyncIORequestLock);
5417	AssertRC(rc);
5418	}
5419
5420	/**
5421	* Async I/O thread for an interface.
5422	*
5423	* Once upon a time this was readable code with several loops and a different
5424	* semaphore for each purpose. But then came the "how can one save the state in
5425	* the middle of a PIO transfer" question. The solution was to use an ASM,
5426	* which is what's there now.
5427	*/
5428	static DECLCALLBACK(int) ataR3AsyncIOThread(RTTHREAD ThreadSelf, void *pvUser)
5429	{
5430	const ATARequest *pReq;
5431	uint64_t u64TS = 0; /* shut up gcc */
5432	uint64_t uWait;
5433	int rc = VINF_SUCCESS;
5434	PATACONTROLLER pCtl = (PATACONTROLLER)pvUser;
5435	ATADevState *s;
5436
5437	pReq = NULL;
5438	pCtl->fChainedTransfer = false;
5439	while (!pCtl->fShutdown)
5440	{
5441	/* Keep this thread from doing anything as long as EMT is suspended. */
5442	while (pCtl->fRedoIdle)
5443	{
5444	if (pCtl->fSignalIdle)
5445	ataR3AsyncSignalIdle(pCtl);
5446	rc = RTSemEventWait(pCtl->SuspendIOSem, RT_INDEFINITE_WAIT);
5447	/* Continue if we got a signal by RTThreadPoke().
5448	* We will get notified if there is a request to process.
5449	*/
5450	if (RT_UNLIKELY(rc == VERR_INTERRUPTED))
5451	continue;
5452	if (RT_FAILURE(rc) \|\| pCtl->fShutdown)
5453	break;
5454
5455	pCtl->fRedoIdle = false;
5456	}
5457
5458	/* Wait for work. */
5459	while (pReq == NULL)
5460	{
5461	if (pCtl->fSignalIdle)
5462	ataR3AsyncSignalIdle(pCtl);
5463	rc = SUPSemEventWaitNoResume(pCtl->pSupDrvSession, pCtl->hAsyncIOSem, RT_INDEFINITE_WAIT);
5464	/* Continue if we got a signal by RTThreadPoke().
5465	* We will get notified if there is a request to process.
5466	*/
5467	if (RT_UNLIKELY(rc == VERR_INTERRUPTED))
5468	continue;
5469	if (RT_FAILURE(rc) \|\| RT_UNLIKELY(pCtl->fShutdown))
5470	break;
5471
5472	pReq = ataR3AsyncIOGetCurrentRequest(pCtl);
5473	}
5474
5475	if (RT_FAILURE(rc) \|\| pCtl->fShutdown)
5476	break;
5477
5478	if (pReq == NULL)
5479	continue;
5480
5481	ATAAIO ReqType = pReq->ReqType;
5482
5483	Log2(("%s: Ctl#%d: state=%d, req=%d\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl), pCtl->uAsyncIOState, ReqType));
5484	if (pCtl->uAsyncIOState != ReqType)
5485	{
5486	/* The new state is not the state that was expected by the normal
5487	* state changes. This is either a RESET/ABORT or there's something
5488	* really strange going on. */
5489	if ( (pCtl->uAsyncIOState == ATA_AIO_PIO \|\| pCtl->uAsyncIOState == ATA_AIO_DMA)
5490	&& (ReqType == ATA_AIO_PIO \|\| ReqType == ATA_AIO_DMA))
5491	{
5492	/* Incorrect sequence of PIO/DMA states. Dump request queue. */
5493	ataR3AsyncIODumpRequests(pCtl);
5494	}
5495	AssertReleaseMsg(ReqType == ATA_AIO_RESET_ASSERTED \|\| ReqType == ATA_AIO_RESET_CLEARED \|\| ReqType == ATA_AIO_ABORT \|\| pCtl->uAsyncIOState == ReqType, ("I/O state inconsistent: state=%d request=%d\n", pCtl->uAsyncIOState, ReqType));
5496	}
5497
5498	/* Do our work. */
5499	{
5500	STAM_PROFILE_START(&pCtl->StatLockWait, a);
5501	PDMCritSectEnter(&pCtl->lock, VINF_SUCCESS);
5502	STAM_PROFILE_STOP(&pCtl->StatLockWait, a);
5503	}
5504
5505	if (pCtl->uAsyncIOState == ATA_AIO_NEW && !pCtl->fChainedTransfer)
5506	{
5507	u64TS = RTTimeNanoTS();
5508	#if defined(DEBUG) \|\| defined(VBOX_WITH_STATISTICS)
5509	STAM_PROFILE_ADV_START(&pCtl->StatAsyncTime, a);
5510	#endif
5511	}
5512
5513	switch (ReqType)
5514	{
5515	case ATA_AIO_NEW:
5516
5517	pCtl->iAIOIf = pReq->u.t.iIf;
5518	s = &pCtl->aIfs[pCtl->iAIOIf];
5519	s->cbTotalTransfer = pReq->u.t.cbTotalTransfer;
5520	s->uTxDir = pReq->u.t.uTxDir;
5521	s->iBeginTransfer = pReq->u.t.iBeginTransfer;
5522	s->iSourceSink = pReq->u.t.iSourceSink;
5523	s->iIOBufferEnd = 0;
5524	s->u64CmdTS = u64TS;
5525
5526	if (s->fATAPI)
5527	{
5528	if (pCtl->fChainedTransfer)
5529	{
5530	/* Only count the actual transfers, not the PIO
5531	* transfer of the ATAPI command bytes. */
5532	if (s->fDMA)
5533	STAM_REL_COUNTER_INC(&s->StatATAPIDMA);
5534	else
5535	STAM_REL_COUNTER_INC(&s->StatATAPIPIO);
5536	}
5537	}
5538	else
5539	{
5540	if (s->fDMA)
5541	STAM_REL_COUNTER_INC(&s->StatATADMA);
5542	else
5543	STAM_REL_COUNTER_INC(&s->StatATAPIO);
5544	}
5545
5546	pCtl->fChainedTransfer = false;
5547
5548	if (s->iBeginTransfer != ATAFN_BT_NULL)
5549	{
5550	Log2(("%s: Ctl#%d: calling begin transfer function\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl)));
5551	g_apfnBeginTransFuncs[s->iBeginTransfer](s);
5552	s->iBeginTransfer = ATAFN_BT_NULL;
5553	if (s->uTxDir != PDMMEDIATXDIR_FROM_DEVICE)
5554	s->iIOBufferEnd = s->cbElementaryTransfer;
5555	}
5556	else
5557	{
5558	s->cbElementaryTransfer = s->cbTotalTransfer;
5559	s->iIOBufferEnd = s->cbTotalTransfer;
5560	}
5561	s->iIOBufferCur = 0;
5562
5563	if (s->uTxDir != PDMMEDIATXDIR_TO_DEVICE)
5564	{
5565	if (s->iSourceSink != ATAFN_SS_NULL)
5566	{
5567	bool fRedo;
5568	Log2(("%s: Ctl#%d: calling source/sink function\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl)));
5569	fRedo = g_apfnSourceSinkFuncs[s->iSourceSink](s);
5570	pCtl->fRedo = fRedo;
5571	if (RT_UNLIKELY(fRedo && !pCtl->fReset))
5572	{
5573	/* Operation failed at the initial transfer, restart
5574	* everything from scratch by resending the current
5575	* request. Occurs very rarely, not worth optimizing. */
5576	LogRel(("%s: Ctl#%d: redo entire operation\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl)));
5577	ataHCAsyncIOPutRequest(pCtl, pReq);
5578	break;
5579	}
5580	}
5581	else
5582	ataR3CmdOK(s, 0);
5583	s->iIOBufferEnd = s->cbElementaryTransfer;
5584
5585	}
5586
5587	/* Do not go into the transfer phase if RESET is asserted.
5588	* The CritSect is released while waiting for the host OS
5589	* to finish the I/O, thus RESET is possible here. Most
5590	* important: do not change uAsyncIOState. */
5591	if (pCtl->fReset)
5592	break;
5593
5594	if (s->fDMA)
5595	{
5596	if (s->cbTotalTransfer)
5597	{
5598	ataSetStatus(s, ATA_STAT_DRQ);
5599
5600	pCtl->uAsyncIOState = ATA_AIO_DMA;
5601	/* If BMDMA is already started, do the transfer now. */
5602	if (pCtl->BmDma.u8Cmd & BM_CMD_START)
5603	{
5604	Log2(("%s: Ctl#%d: message to async I/O thread, continuing DMA transfer immediately\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl)));
5605	ataHCAsyncIOPutRequest(pCtl, &g_ataDMARequest);
5606	}
5607	}
5608	else
5609	{
5610	Assert(s->uTxDir == PDMMEDIATXDIR_NONE); /* Any transfer which has an initial transfer size of 0 must be marked as such. */
5611	/* Finish DMA transfer. */
5612	ataR3DMATransferStop(s);
5613	ataHCSetIRQ(s);
5614	pCtl->uAsyncIOState = ATA_AIO_NEW;
5615	}
5616	}
5617	else
5618	{
5619	if (s->cbTotalTransfer)
5620	{
5621	ataHCPIOTransfer(pCtl);
5622	Assert(!pCtl->fRedo);
5623	if (s->fATAPITransfer \|\| s->uTxDir != PDMMEDIATXDIR_TO_DEVICE)
5624	ataHCSetIRQ(s);
5625
5626	if (s->uTxDir == PDMMEDIATXDIR_TO_DEVICE \|\| s->iSourceSink != ATAFN_SS_NULL)
5627	{
5628	/* Write operations and not yet finished transfers
5629	* must be completed in the async I/O thread. */
5630	pCtl->uAsyncIOState = ATA_AIO_PIO;
5631	}
5632	else
5633	{
5634	/* Finished read operation can be handled inline
5635	* in the end of PIO transfer handling code. Linux
5636	* depends on this, as it waits only briefly for
5637	* devices to become ready after incoming data
5638	* transfer. Cannot find anything in the ATA spec
5639	* that backs this assumption, but as all kernels
5640	* are affected (though most of the time it does
5641	* not cause any harm) this must work. */
5642	pCtl->uAsyncIOState = ATA_AIO_NEW;
5643	}
5644	}
5645	else
5646	{
5647	Assert(s->uTxDir == PDMMEDIATXDIR_NONE); /* Any transfer which has an initial transfer size of 0 must be marked as such. */
5648	/* Finish PIO transfer. */
5649	ataHCPIOTransfer(pCtl);
5650	Assert(!pCtl->fRedo);
5651	if (!s->fATAPITransfer)
5652	ataHCSetIRQ(s);
5653	pCtl->uAsyncIOState = ATA_AIO_NEW;
5654	}
5655	}
5656	break;
5657
5658	case ATA_AIO_DMA:
5659	{
5660	BMDMAState *bm = &pCtl->BmDma;
5661	s = &pCtl->aIfs[pCtl->iAIOIf]; /* Do not remove or there's an instant crash after loading the saved state */
5662	ATAFNSS iOriginalSourceSink = (ATAFNSS)s->iSourceSink; /* Used by the hack below, but gets reset by then. */
5663
5664	if (s->uTxDir == PDMMEDIATXDIR_FROM_DEVICE)
5665	AssertRelease(bm->u8Cmd & BM_CMD_WRITE);
5666	else
5667	AssertRelease(!(bm->u8Cmd & BM_CMD_WRITE));
5668
5669	if (RT_LIKELY(!pCtl->fRedo))
5670	{
5671	/* The specs say that the descriptor table must not cross a
5672	* 4K boundary. */
5673	pCtl->pFirstDMADesc = bm->pvAddr;
5674	pCtl->pLastDMADesc = RT_ALIGN_32(bm->pvAddr + 1, _4K) - sizeof(BMDMADesc);
5675	}
5676	ataR3DMATransfer(pCtl);
5677
5678	if (RT_UNLIKELY(pCtl->fRedo && !pCtl->fReset))
5679	{
5680	LogRel(("PIIX3 ATA: Ctl#%d: redo DMA operation\n", ATACONTROLLER_IDX(pCtl)));
5681	ataHCAsyncIOPutRequest(pCtl, &g_ataDMARequest);
5682	break;
5683	}
5684
5685	/* The infamous delay IRQ hack. */
5686	if ( iOriginalSourceSink == ATAFN_SS_WRITE_SECTORS
5687	&& s->cbTotalTransfer == 0
5688	&& pCtl->DelayIRQMillies)
5689	{
5690	/* Delay IRQ for writing. Required to get the Win2K
5691	* installation work reliably (otherwise it crashes,
5692	* usually during component install). So far no better
5693	* solution has been found. */
5694	Log(("%s: delay IRQ hack\n", __FUNCTION__));
5695	PDMCritSectLeave(&pCtl->lock);
5696	RTThreadSleep(pCtl->DelayIRQMillies);
5697	PDMCritSectEnter(&pCtl->lock, VINF_SUCCESS);
5698	}
5699
5700	ataUnsetStatus(s, ATA_STAT_DRQ);
5701	Assert(!pCtl->fChainedTransfer);
5702	Assert(s->iSourceSink == ATAFN_SS_NULL);
5703	if (s->fATAPITransfer)
5704	{
5705	s->uATARegNSector = (s->uATARegNSector & ~7) \| ATAPI_INT_REASON_IO \| ATAPI_INT_REASON_CD;
5706	Log2(("%s: Ctl#%d: interrupt reason %#04x\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl), s->uATARegNSector));
5707	s->fATAPITransfer = false;
5708	}
5709	ataHCSetIRQ(s);
5710	pCtl->uAsyncIOState = ATA_AIO_NEW;
5711	break;
5712	}
5713
5714	case ATA_AIO_PIO:
5715	s = &pCtl->aIfs[pCtl->iAIOIf]; /* Do not remove or there's an instant crash after loading the saved state */
5716
5717	if (s->iSourceSink != ATAFN_SS_NULL)
5718	{
5719	bool fRedo;
5720	Log2(("%s: Ctl#%d: calling source/sink function\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl)));
5721	fRedo = g_apfnSourceSinkFuncs[s->iSourceSink](s);
5722	pCtl->fRedo = fRedo;
5723	if (RT_UNLIKELY(fRedo && !pCtl->fReset))
5724	{
5725	LogRel(("PIIX3 ATA: Ctl#%d: redo PIO operation\n", ATACONTROLLER_IDX(pCtl)));
5726	ataHCAsyncIOPutRequest(pCtl, &g_ataPIORequest);
5727	break;
5728	}
5729	s->iIOBufferCur = 0;
5730	s->iIOBufferEnd = s->cbElementaryTransfer;
5731	}
5732	else
5733	{
5734	/* Continue a previously started transfer. */
5735	ataUnsetStatus(s, ATA_STAT_BUSY);
5736	ataSetStatus(s, ATA_STAT_READY);
5737	}
5738
5739	/* It is possible that the drives on this controller get RESET
5740	* during the above call to the source/sink function. If that's
5741	* the case, don't restart the transfer and don't finish it the
5742	* usual way. RESET handling took care of all that already.
5743	* Most important: do not change uAsyncIOState. */
5744	if (pCtl->fReset)
5745	break;
5746
5747	if (s->cbTotalTransfer)
5748	{
5749	ataHCPIOTransfer(pCtl);
5750	ataHCSetIRQ(s);
5751
5752	if (s->uTxDir == PDMMEDIATXDIR_TO_DEVICE \|\| s->iSourceSink != ATAFN_SS_NULL)
5753	{
5754	/* Write operations and not yet finished transfers
5755	* must be completed in the async I/O thread. */
5756	pCtl->uAsyncIOState = ATA_AIO_PIO;
5757	}
5758	else
5759	{
5760	/* Finished read operation can be handled inline
5761	* in the end of PIO transfer handling code. Linux
5762	* depends on this, as it waits only briefly for
5763	* devices to become ready after incoming data
5764	* transfer. Cannot find anything in the ATA spec
5765	* that backs this assumption, but as all kernels
5766	* are affected (though most of the time it does
5767	* not cause any harm) this must work. */
5768	pCtl->uAsyncIOState = ATA_AIO_NEW;
5769	}
5770	}
5771	else
5772	{
5773	/* Finish PIO transfer. */
5774	ataHCPIOTransfer(pCtl);
5775	if ( !pCtl->fChainedTransfer
5776	&& !s->fATAPITransfer
5777	&& s->uTxDir != PDMMEDIATXDIR_FROM_DEVICE)
5778	{
5779	ataHCSetIRQ(s);
5780	}
5781	pCtl->uAsyncIOState = ATA_AIO_NEW;
5782	}
5783	break;
5784
5785	case ATA_AIO_RESET_ASSERTED:
5786	pCtl->uAsyncIOState = ATA_AIO_RESET_CLEARED;
5787	ataHCPIOTransferStop(&pCtl->aIfs[0]);
5788	ataHCPIOTransferStop(&pCtl->aIfs[1]);
5789	/* Do not change the DMA registers, they are not affected by the
5790	* ATA controller reset logic. It should be sufficient to issue a
5791	* new command, which is now possible as the state is cleared. */
5792	break;
5793
5794	case ATA_AIO_RESET_CLEARED:
5795	pCtl->uAsyncIOState = ATA_AIO_NEW;
5796	pCtl->fReset = false;
5797	/* Ensure that half-completed transfers are not redone. A reset
5798	* cancels the entire transfer, so continuing is wrong. */
5799	pCtl->fRedo = false;
5800	pCtl->fRedoDMALastDesc = false;
5801	LogRel(("PIIX3 ATA: Ctl#%d: finished processing RESET\n",
5802	ATACONTROLLER_IDX(pCtl)));
5803	for (uint32_t i = 0; i < RT_ELEMENTS(pCtl->aIfs); i++)
5804	{
5805	if (pCtl->aIfs[i].fATAPI)
5806	ataSetStatusValue(&pCtl->aIfs[i], 0); /* NOTE: READY is _not_ set */
5807	else
5808	ataSetStatusValue(&pCtl->aIfs[i], ATA_STAT_READY \| ATA_STAT_SEEK);
5809	ataR3SetSignature(&pCtl->aIfs[i]);
5810	}
5811	break;
5812
5813	case ATA_AIO_ABORT:
5814	/* Abort the current command no matter what. There cannot be
5815	* any command activity on the other drive otherwise using
5816	* one thread per controller wouldn't work at all. */
5817	s = &pCtl->aIfs[pReq->u.a.iIf];
5818
5819	pCtl->uAsyncIOState = ATA_AIO_NEW;
5820	/* Do not change the DMA registers, they are not affected by the
5821	* ATA controller reset logic. It should be sufficient to issue a
5822	* new command, which is now possible as the state is cleared. */
5823	if (pReq->u.a.fResetDrive)
5824	{
5825	ataR3ResetDevice(s);
5826	ataR3ExecuteDeviceDiagnosticSS(s);
5827	}
5828	else
5829	{
5830	/* Stop any pending DMA transfer. */
5831	s->fDMA = false;
5832	ataHCPIOTransferStop(s);
5833	ataUnsetStatus(s, ATA_STAT_BUSY \| ATA_STAT_DRQ \| ATA_STAT_SEEK \| ATA_STAT_ERR);
5834	ataSetStatus(s, ATA_STAT_READY);
5835	ataHCSetIRQ(s);
5836	}
5837	break;
5838
5839	default:
5840	AssertMsgFailed(("Undefined async I/O state %d\n", pCtl->uAsyncIOState));
5841	}
5842
5843	ataR3AsyncIORemoveCurrentRequest(pCtl, ReqType);
5844	pReq = ataR3AsyncIOGetCurrentRequest(pCtl);
5845
5846	if (pCtl->uAsyncIOState == ATA_AIO_NEW && !pCtl->fChainedTransfer)
5847	{
5848	# if defined(DEBUG) \|\| defined(VBOX_WITH_STATISTICS)
5849	STAM_PROFILE_ADV_STOP(&pCtl->StatAsyncTime, a);
5850	# endif
5851
5852	u64TS = RTTimeNanoTS() - u64TS;
5853	uWait = u64TS / 1000;
5854	Log(("%s: Ctl#%d: LUN#%d finished I/O transaction in %d microseconds\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl), pCtl->aIfs[pCtl->iAIOIf].iLUN, (uint32_t)(uWait)));
5855	/* Mark command as finished. */
5856	pCtl->aIfs[pCtl->iAIOIf].u64CmdTS = 0;
5857
5858	/*
5859	* Release logging of command execution times depends on the
5860	* command type. ATAPI commands often take longer (due to CD/DVD
5861	* spin up time etc.) so the threshold is different.
5862	*/
5863	if (pCtl->aIfs[pCtl->iAIOIf].uATARegCommand != ATA_PACKET)
5864	{
5865	if (uWait > 8 * 1000 * 1000)
5866	{
5867	/*
5868	* Command took longer than 8 seconds. This is close
5869	* enough or over the guest's command timeout, so place
5870	* an entry in the release log to allow tracking such
5871	* timing errors (which are often caused by the host).
5872	*/
5873	LogRel(("PIIX3 ATA: execution time for ATA command %#04x was %d seconds\n", pCtl->aIfs[pCtl->iAIOIf].uATARegCommand, uWait / (1000 * 1000)));
5874	}
5875	}
5876	else
5877	{
5878	if (uWait > 20 * 1000 * 1000)
5879	{
5880	/*
5881	* Command took longer than 20 seconds. This is close
5882	* enough or over the guest's command timeout, so place
5883	* an entry in the release log to allow tracking such
5884	* timing errors (which are often caused by the host).
5885	*/
5886	LogRel(("PIIX3 ATA: execution time for ATAPI command %#04x was %d seconds\n", pCtl->aIfs[pCtl->iAIOIf].aATAPICmd[0], uWait / (1000 * 1000)));
5887	}
5888	}
5889
5890	# if defined(DEBUG) \|\| defined(VBOX_WITH_STATISTICS)
5891	if (uWait < pCtl->StatAsyncMinWait \|\| !pCtl->StatAsyncMinWait)
5892	pCtl->StatAsyncMinWait = uWait;
5893	if (uWait > pCtl->StatAsyncMaxWait)
5894	pCtl->StatAsyncMaxWait = uWait;
5895
5896	STAM_COUNTER_ADD(&pCtl->StatAsyncTimeUS, uWait);
5897	STAM_COUNTER_INC(&pCtl->StatAsyncOps);
5898	# endif /* DEBUG \|\| VBOX_WITH_STATISTICS */
5899	}
5900
5901	PDMCritSectLeave(&pCtl->lock);
5902	}
5903
5904	/* Signal the ultimate idleness. */
5905	RTThreadUserSignal(pCtl->AsyncIOThread);
5906	if (pCtl->fSignalIdle)
5907	PDMDevHlpAsyncNotificationCompleted(pCtl->pDevInsR3);
5908
5909	/* Cleanup the state. */
5910	/* Do not destroy request lock yet, still needed for proper shutdown. */
5911	pCtl->fShutdown = false;
5912
5913	Log2(("%s: Ctl#%d: return %Rrc\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl), rc));
5914	return rc;
5915	}
5916
5917	#endif /* IN_RING3 */
5918
5919	static uint32_t ataBMDMACmdReadB(PATACONTROLLER pCtl, uint32_t addr)
5920	{
5921	uint32_t val = pCtl->BmDma.u8Cmd;
5922	Log2(("%s: addr=%#06x val=%#04x\n", __FUNCTION__, addr, val));
5923	return val;
5924	}
5925
5926
5927	static void ataBMDMACmdWriteB(PATACONTROLLER pCtl, uint32_t addr, uint32_t val)
5928	{
5929	Log2(("%s: addr=%#06x val=%#04x\n", __FUNCTION__, addr, val));
5930	if (!(val & BM_CMD_START))
5931	{
5932	pCtl->BmDma.u8Status &= ~BM_STATUS_DMAING;
5933	pCtl->BmDma.u8Cmd = val & (BM_CMD_START \| BM_CMD_WRITE);
5934	}
5935	else
5936	{
5937	#ifndef IN_RC
5938	/* Check whether the guest OS wants to change DMA direction in
5939	* mid-flight. Not allowed, according to the PIIX3 specs. */
5940	Assert(!(pCtl->BmDma.u8Status & BM_STATUS_DMAING) \|\| !((val ^ pCtl->BmDma.u8Cmd) & 0x04));
5941	uint8_t uOldBmDmaStatus = pCtl->BmDma.u8Status;
5942	pCtl->BmDma.u8Status \|= BM_STATUS_DMAING;
5943	pCtl->BmDma.u8Cmd = val & (BM_CMD_START \| BM_CMD_WRITE);
5944
5945	/* Do not continue DMA transfers while the RESET line is asserted. */
5946	if (pCtl->fReset)
5947	{
5948	Log2(("%s: Ctl#%d: suppressed continuing DMA transfer as RESET is active\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl)));
5949	return;
5950	}
5951
5952	/* Do not start DMA transfers if there's a PIO transfer going on,
5953	* or if there is already a transfer started on this controller. */
5954	if ( !pCtl->aIfs[pCtl->iSelectedIf].fDMA
5955	\|\| (uOldBmDmaStatus & BM_STATUS_DMAING))
5956	return;
5957
5958	if (pCtl->aIfs[pCtl->iAIOIf].uATARegStatus & ATA_STAT_DRQ)
5959	{
5960	Log2(("%s: Ctl#%d: message to async I/O thread, continuing DMA transfer\n", __FUNCTION__, ATACONTROLLER_IDX(pCtl)));
5961	ataHCAsyncIOPutRequest(pCtl, &g_ataDMARequest);
5962	}
5963	#else /* !IN_RING3 */
5964	AssertMsgFailed(("DMA START handling is too complicated for RC\n"));
5965	#endif /* IN_RING3 */
5966	}
5967	}
5968
5969	static uint32_t ataBMDMAStatusReadB(PATACONTROLLER pCtl, uint32_t addr)
5970	{
5971	uint32_t val = pCtl->BmDma.u8Status;
5972	Log2(("%s: addr=%#06x val=%#04x\n", __FUNCTION__, addr, val));
5973	return val;
5974	}
5975
5976	static void ataBMDMAStatusWriteB(PATACONTROLLER pCtl, uint32_t addr, uint32_t val)
5977	{
5978	Log2(("%s: addr=%#06x val=%#04x\n", __FUNCTION__, addr, val));
5979	pCtl->BmDma.u8Status = (val & (BM_STATUS_D0DMA \| BM_STATUS_D1DMA))
5980	\| (pCtl->BmDma.u8Status & BM_STATUS_DMAING)
5981	\| (pCtl->BmDma.u8Status & ~val & (BM_STATUS_ERROR \| BM_STATUS_INT));
5982	}
5983
5984	static uint32_t ataBMDMAAddrReadL(PATACONTROLLER pCtl, uint32_t addr)
5985	{
5986	uint32_t val = (uint32_t)pCtl->BmDma.pvAddr;
5987	Log2(("%s: addr=%#06x val=%#010x\n", __FUNCTION__, addr, val));
5988	return val;
5989	}
5990
5991	static void ataBMDMAAddrWriteL(PATACONTROLLER pCtl, uint32_t addr, uint32_t val)
5992	{
5993	Log2(("%s: addr=%#06x val=%#010x\n", __FUNCTION__, addr, val));
5994	pCtl->BmDma.pvAddr = val & ~3;
5995	}
5996
5997	static void ataBMDMAAddrWriteLowWord(PATACONTROLLER pCtl, uint32_t addr, uint32_t val)
5998	{
5999	Log2(("%s: addr=%#06x val=%#010x\n", __FUNCTION__, addr, val));
6000	pCtl->BmDma.pvAddr = (pCtl->BmDma.pvAddr & 0xFFFF0000) \| RT_LOWORD(val & ~3);
6001
6002	}
6003
6004	static void ataBMDMAAddrWriteHighWord(PATACONTROLLER pCtl, uint32_t addr, uint32_t val)
6005	{
6006	Log2(("%s: addr=%#06x val=%#010x\n", __FUNCTION__, addr, val));
6007	pCtl->BmDma.pvAddr = (RT_LOWORD(val) << 16) \| RT_LOWORD(pCtl->BmDma.pvAddr);
6008	}
6009
6010	#define VAL(port, size) ( ((port) & 7) \| ((size) << 3) )
6011
6012	/**
6013	* Port I/O Handler for bus master DMA IN operations.
6014	* @see FNIOMIOPORTIN for details.
6015	*/
6016	PDMBOTHCBDECL(int) ataBMDMAIOPortRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
6017	{
6018	uint32_t i = (uint32_t)(uintptr_t)pvUser;
6019	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
6020	PATACONTROLLER pCtl = &pThis->aCts[i];
6021
6022	int rc = PDMCritSectEnter(&pCtl->lock, VINF_IOM_R3_IOPORT_READ);
6023	if (rc != VINF_SUCCESS)
6024	return rc;
6025	switch (VAL(Port, cb))
6026	{
6027	case VAL(0, 1): *pu32 = ataBMDMACmdReadB(pCtl, Port); break;
6028	case VAL(0, 2): *pu32 = ataBMDMACmdReadB(pCtl, Port); break;
6029	case VAL(2, 1): *pu32 = ataBMDMAStatusReadB(pCtl, Port); break;
6030	case VAL(2, 2): *pu32 = ataBMDMAStatusReadB(pCtl, Port); break;
6031	case VAL(4, 4): *pu32 = ataBMDMAAddrReadL(pCtl, Port); break;
6032	case VAL(0, 4):
6033	/* The SCO OpenServer tries to read 4 bytes starting from offset 0. */
6034	*pu32 = ataBMDMACmdReadB(pCtl, Port) \| (ataBMDMAStatusReadB(pCtl, Port) << 16);
6035	break;
6036	default:
6037	AssertMsgFailed(("%s: Unsupported read from port %x size=%d\n", __FUNCTION__, Port, cb));
6038	PDMCritSectLeave(&pCtl->lock);
6039	return VERR_IOM_IOPORT_UNUSED;
6040	}
6041	PDMCritSectLeave(&pCtl->lock);
6042	return rc;
6043	}
6044
6045	/**
6046	* Port I/O Handler for bus master DMA OUT operations.
6047	* @see FNIOMIOPORTOUT for details.
6048	*/
6049	PDMBOTHCBDECL(int) ataBMDMAIOPortWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
6050	{
6051	uint32_t i = (uint32_t)(uintptr_t)pvUser;
6052	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
6053	PATACONTROLLER pCtl = &pThis->aCts[i];
6054
6055	int rc = PDMCritSectEnter(&pCtl->lock, VINF_IOM_R3_IOPORT_WRITE);
6056	if (rc != VINF_SUCCESS)
6057	return rc;
6058	switch (VAL(Port, cb))
6059	{
6060	case VAL(0, 1):
6061	#ifdef IN_RC
6062	if (u32 & BM_CMD_START)
6063	{
6064	rc = VINF_IOM_R3_IOPORT_WRITE;
6065	break;
6066	}
6067	#endif
6068	ataBMDMACmdWriteB(pCtl, Port, u32);
6069	break;
6070	case VAL(2, 1): ataBMDMAStatusWriteB(pCtl, Port, u32); break;
6071	case VAL(4, 4): ataBMDMAAddrWriteL(pCtl, Port, u32); break;
6072	case VAL(4, 2): ataBMDMAAddrWriteLowWord(pCtl, Port, u32); break;
6073	case VAL(6, 2): ataBMDMAAddrWriteHighWord(pCtl, Port, u32); break;
6074	default: AssertMsgFailed(("%s: Unsupported write to port %x size=%d val=%x\n", __FUNCTION__, Port, cb, u32)); break;
6075	}
6076	PDMCritSectLeave(&pCtl->lock);
6077	return rc;
6078	}
6079
6080	#undef VAL
6081
6082	#ifdef IN_RING3
6083
6084	/**
6085	* Callback function for mapping an PCI I/O region.
6086	*
6087	* @return VBox status code.
6088	* @param pPciDev Pointer to PCI device. Use pPciDev->pDevIns to get the device instance.
6089	* @param iRegion The region number.
6090	* @param GCPhysAddress Physical address of the region. If iType is PCI_ADDRESS_SPACE_IO, this is an
6091	* I/O port, else it's a physical address.
6092	* This address is NOT relative to pci_mem_base like earlier!
6093	* @param enmType One of the PCI_ADDRESS_SPACE_* values.
6094	*/
6095	static DECLCALLBACK(int) ataR3BMDMAIORangeMap(PPCIDEVICE pPciDev, /unsigned/ int iRegion,
6096	RTGCPHYS GCPhysAddress, uint32_t cb, PCIADDRESSSPACE enmType)
6097	{
6098	PCIATAState *pThis = PCIDEV_2_PCIATASTATE(pPciDev);
6099	int rc = VINF_SUCCESS;
6100	Assert(enmType == PCI_ADDRESS_SPACE_IO);
6101	Assert(iRegion == 4);
6102	AssertMsg(RT_ALIGN(GCPhysAddress, 8) == GCPhysAddress, ("Expected 8 byte alignment. GCPhysAddress=%#x\n", GCPhysAddress));
6103
6104	/* Register the port range. */
6105	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aCts); i++)
6106	{
6107	int rc2 = PDMDevHlpIOPortRegister(pPciDev->pDevIns, (RTIOPORT)GCPhysAddress + i * 8, 8,
6108	(RTHCPTR)(uintptr_t)i, ataBMDMAIOPortWrite, ataBMDMAIOPortRead,
6109	NULL, NULL, "ATA Bus Master DMA");
6110	AssertRC(rc2);
6111	if (rc2 < rc)
6112	rc = rc2;
6113
6114	if (pThis->fRCEnabled)
6115	{
6116	rc2 = PDMDevHlpIOPortRegisterRC(pPciDev->pDevIns, (RTIOPORT)GCPhysAddress + i * 8, 8,
6117	(RTGCPTR)i, "ataBMDMAIOPortWrite", "ataBMDMAIOPortRead",
6118	NULL, NULL, "ATA Bus Master DMA");
6119	AssertRC(rc2);
6120	if (rc2 < rc)
6121	rc = rc2;
6122	}
6123	if (pThis->fR0Enabled)
6124	{
6125	rc2 = PDMDevHlpIOPortRegisterR0(pPciDev->pDevIns, (RTIOPORT)GCPhysAddress + i * 8, 8,
6126	(RTR0PTR)i, "ataBMDMAIOPortWrite", "ataBMDMAIOPortRead",
6127	NULL, NULL, "ATA Bus Master DMA");
6128	AssertRC(rc2);
6129	if (rc2 < rc)
6130	rc = rc2;
6131	}
6132	}
6133	return rc;
6134	}
6135
6136
6137	/* -=-=-=-=-=- PCIATAState::IBase -=-=-=-=-=- */
6138
6139	/**
6140	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
6141	*/
6142	static DECLCALLBACK(void ) ataR3Status_QueryInterface(PPDMIBASE pInterface, const char pszIID)
6143	{
6144	PCIATAState *pThis = PDMIBASE_2_PCIATASTATE(pInterface);
6145	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->IBase);
6146	PDMIBASE_RETURN_INTERFACE(pszIID, PDMILEDPORTS, &pThis->ILeds);
6147	return NULL;
6148	}
6149
6150
6151	/* -=-=-=-=-=- PCIATAState::ILeds -=-=-=-=-=- */
6152
6153	/**
6154	* Gets the pointer to the status LED of a unit.
6155	*
6156	* @returns VBox status code.
6157	* @param pInterface Pointer to the interface structure containing the called function pointer.
6158	* @param iLUN The unit which status LED we desire.
6159	* @param ppLed Where to store the LED pointer.
6160	*/
6161	static DECLCALLBACK(int) ataR3Status_QueryStatusLed(PPDMILEDPORTS pInterface, unsigned iLUN, PPDMLED *ppLed)
6162	{
6163	PCIATAState *pThis = PDMILEDPORTS_2_PCIATASTATE(pInterface);
6164	if (iLUN < 4)
6165	{
6166	switch (iLUN)
6167	{
6168	case 0: *ppLed = &pThis->aCts[0].aIfs[0].Led; break;
6169	case 1: *ppLed = &pThis->aCts[0].aIfs[1].Led; break;
6170	case 2: *ppLed = &pThis->aCts[1].aIfs[0].Led; break;
6171	case 3: *ppLed = &pThis->aCts[1].aIfs[1].Led; break;
6172	}
6173	Assert((*ppLed)->u32Magic == PDMLED_MAGIC);
6174	return VINF_SUCCESS;
6175	}
6176	return VERR_PDM_LUN_NOT_FOUND;
6177	}
6178
6179
6180	/* -=-=-=-=-=- ATADevState::IBase -=-=-=-=-=- */
6181
6182	/**
6183	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
6184	*/
6185	static DECLCALLBACK(void ) ataR3QueryInterface(PPDMIBASE pInterface, const char pszIID)
6186	{
6187	ATADevState *pIf = PDMIBASE_2_ATASTATE(pInterface);
6188	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pIf->IBase);
6189	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIMEDIAPORT, &pIf->IPort);
6190	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIMOUNTNOTIFY, &pIf->IMountNotify);
6191	return NULL;
6192	}
6193
6194
6195	/* -=-=-=-=-=- ATADevState::IPort -=-=-=-=-=- */
6196
6197	/**
6198	* @interface_method_impl{PDMIMEDIAPORT,pfnQueryDeviceLocation}
6199	*/
6200	static DECLCALLBACK(int) ataR3QueryDeviceLocation(PPDMIMEDIAPORT pInterface, const char **ppcszController,
6201	uint32_t piInstance, uint32_t piLUN)
6202	{
6203	ATADevState *pIf = PDMIMEDIAPORT_2_ATASTATE(pInterface);
6204	PPDMDEVINS pDevIns = pIf->CTX_SUFF(pDevIns);
6205
6206	AssertPtrReturn(ppcszController, VERR_INVALID_POINTER);
6207	AssertPtrReturn(piInstance, VERR_INVALID_POINTER);
6208	AssertPtrReturn(piLUN, VERR_INVALID_POINTER);
6209
6210	*ppcszController = pDevIns->pReg->szName;
6211	*piInstance = pDevIns->iInstance;
6212	*piLUN = pIf->iLUN;
6213
6214	return VINF_SUCCESS;
6215	}
6216
6217	#endif /* IN_RING3 */
6218
6219	/* -=-=-=-=-=- Wrappers -=-=-=-=-=- */
6220
6221
6222	/**
6223	* Port I/O Handler for primary port range OUT operations.
6224	* @see FNIOMIOPORTOUT for details.
6225	*/
6226	PDMBOTHCBDECL(int) ataIOPortWrite1Other(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
6227	{
6228	uint32_t i = (uint32_t)(uintptr_t)pvUser;
6229	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
6230	PATACONTROLLER pCtl = &pThis->aCts[i];
6231
6232	Assert(i < 2);
6233	Assert(Port != pCtl->IOPortBase1);
6234
6235	int rc = PDMCritSectEnter(&pCtl->lock, VINF_IOM_R3_IOPORT_WRITE);
6236	if (rc == VINF_SUCCESS)
6237	{
6238	/* Writes to the other command block ports should be 8-bit only. If they
6239	* are not, the high bits are simply discarded. Undocumented, but observed
6240	* on a real PIIX4 system.
6241	*/
6242	if (cb > 1)
6243	Log(("ataIOPortWrite1: suspect write to port %x val=%x size=%d\n", Port, u32, cb));
6244
6245	rc = ataIOPortWriteU8(pCtl, Port, u32);
6246
6247	PDMCritSectLeave(&pCtl->lock);
6248	}
6249	return rc;
6250	}
6251
6252
6253	/**
6254	* Port I/O Handler for primary port range IN operations.
6255	* @see FNIOMIOPORTIN for details.
6256	*/
6257	PDMBOTHCBDECL(int) ataIOPortRead1Other(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
6258	{
6259	uint32_t i = (uint32_t)(uintptr_t)pvUser;
6260	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
6261	PATACONTROLLER pCtl = &pThis->aCts[i];
6262
6263	Assert(i < 2);
6264	Assert(Port != pCtl->IOPortBase1);
6265
6266	int rc = PDMCritSectEnter(&pCtl->lock, VINF_IOM_R3_IOPORT_READ);
6267	if (rc == VINF_SUCCESS)
6268	{
6269	/* Reads from the other command block registers should be 8-bit only.
6270	* If they are not, the low byte is propagated to the high bits.
6271	* Undocumented, but observed on a real PIIX4 system.
6272	*/
6273	rc = ataIOPortReadU8(pCtl, Port, pu32);
6274	if (cb > 1)
6275	{
6276	uint32_t pad;
6277
6278	/* Replicate the 8-bit result into the upper three bytes. */
6279	pad = *pu32 & 0xff;
6280	pad = pad \| (pad << 8);
6281	pad = pad \| (pad << 16);
6282	*pu32 = pad;
6283	Log(("ataIOPortRead1: suspect read from port %x size=%d\n", Port, cb));
6284	}
6285	PDMCritSectLeave(&pCtl->lock);
6286	}
6287	return rc;
6288	}
6289
6290
6291	/**
6292	* Port I/O Handler for secondary port range OUT operations.
6293	* @see FNIOMIOPORTOUT for details.
6294	*/
6295	PDMBOTHCBDECL(int) ataIOPortWrite2(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
6296	{
6297	uint32_t i = (uint32_t)(uintptr_t)pvUser;
6298	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
6299	PATACONTROLLER pCtl = &pThis->aCts[i];
6300	int rc;
6301
6302	Assert(i < 2);
6303
6304	if (cb == 1)
6305	{
6306	rc = PDMCritSectEnter(&pCtl->lock, VINF_IOM_R3_IOPORT_WRITE);
6307	if (rc == VINF_SUCCESS)
6308	{
6309	rc = ataControlWrite(pCtl, Port, u32);
6310	PDMCritSectLeave(&pCtl->lock);
6311	}
6312	}
6313	else
6314	rc = VINF_SUCCESS;
6315	return rc;
6316	}
6317
6318
6319	/**
6320	* Port I/O Handler for secondary port range IN operations.
6321	* @see FNIOMIOPORTIN for details.
6322	*/
6323	PDMBOTHCBDECL(int) ataIOPortRead2(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
6324	{
6325	uint32_t i = (uint32_t)(uintptr_t)pvUser;
6326	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
6327	PATACONTROLLER pCtl = &pThis->aCts[i];
6328	int rc;
6329
6330	Assert(i < 2);
6331
6332	if (cb == 1)
6333	{
6334	rc = PDMCritSectEnter(&pCtl->lock, VINF_IOM_R3_IOPORT_READ);
6335	if (rc == VINF_SUCCESS)
6336	{
6337	*pu32 = ataStatusRead(pCtl, Port);
6338	PDMCritSectLeave(&pCtl->lock);
6339	}
6340	}
6341	else
6342	rc = VERR_IOM_IOPORT_UNUSED;
6343	return rc;
6344	}
6345
6346	#ifdef IN_RING3
6347
6348
6349	DECLINLINE(void) ataR3RelocBuffer(PPDMDEVINS pDevIns, ATADevState *s)
6350	{
6351	if (s->pbIOBufferR3)
6352	s->pbIOBufferRC = MMHyperR3ToRC(PDMDevHlpGetVM(pDevIns), s->pbIOBufferR3);
6353	}
6354
6355
6356	/**
6357	* Detach notification.
6358	*
6359	* The DVD drive has been unplugged.
6360	*
6361	* @param pDevIns The device instance.
6362	* @param iLUN The logical unit which is being detached.
6363	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
6364	*/
6365	static DECLCALLBACK(void) ataR3Detach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
6366	{
6367	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
6368	PATACONTROLLER pCtl;
6369	ATADevState *pIf;
6370	unsigned iController;
6371	unsigned iInterface;
6372
6373	AssertMsg(fFlags & PDM_TACH_FLAGS_NOT_HOT_PLUG,
6374	("PIIX3IDE: Device does not support hotplugging\n"));
6375
6376	/*
6377	* Locate the controller and stuff.
6378	*/
6379	iController = iLUN / RT_ELEMENTS(pThis->aCts[0].aIfs);
6380	AssertReleaseMsg(iController < RT_ELEMENTS(pThis->aCts), ("iController=%d iLUN=%d\n", iController, iLUN));
6381	pCtl = &pThis->aCts[iController];
6382
6383	iInterface = iLUN % RT_ELEMENTS(pThis->aCts[0].aIfs);
6384	pIf = &pCtl->aIfs[iInterface];
6385
6386	/*
6387	* Zero some important members.
6388	*/
6389	pIf->pDrvBase = NULL;
6390	pIf->pDrvMedia = NULL;
6391	pIf->pDrvMount = NULL;
6392
6393	/*
6394	* In case there was a medium inserted.
6395	*/
6396	ataR3MediumRemoved(pIf);
6397	}
6398
6399
6400	/**
6401	* Configure a LUN.
6402	*
6403	* @returns VBox status code.
6404	* @param pDevIns The device instance.
6405	* @param pIf The ATA unit state.
6406	*/
6407	static int ataR3ConfigLun(PPDMDEVINS pDevIns, ATADevState *pIf)
6408	{
6409	int rc = VINF_SUCCESS;
6410	PDMMEDIATYPE enmType;
6411
6412	/*
6413	* Query Block, Bios and Mount interfaces.
6414	*/
6415	pIf->pDrvMedia = PDMIBASE_QUERY_INTERFACE(pIf->pDrvBase, PDMIMEDIA);
6416	if (!pIf->pDrvMedia)
6417	{
6418	AssertMsgFailed(("Configuration error: LUN#%d hasn't a block interface!\n", pIf->iLUN));
6419	return VERR_PDM_MISSING_INTERFACE;
6420	}
6421
6422	pIf->pDrvMount = PDMIBASE_QUERY_INTERFACE(pIf->pDrvBase, PDMIMOUNT);
6423
6424	/*
6425	* Validate type.
6426	*/
6427	enmType = pIf->pDrvMedia->pfnGetType(pIf->pDrvMedia);
6428	if ( enmType != PDMMEDIATYPE_CDROM
6429	&& enmType != PDMMEDIATYPE_DVD
6430	&& enmType != PDMMEDIATYPE_HARD_DISK)
6431	{
6432	AssertMsgFailed(("Configuration error: LUN#%d isn't a disk or cd/dvd-rom. enmType=%d\n", pIf->iLUN, enmType));
6433	return VERR_PDM_UNSUPPORTED_BLOCK_TYPE;
6434	}
6435	if ( ( enmType == PDMMEDIATYPE_DVD
6436	\|\| enmType == PDMMEDIATYPE_CDROM)
6437	&& !pIf->pDrvMount)
6438	{
6439	AssertMsgFailed(("Internal error: cdrom without a mountable interface, WTF???!\n"));
6440	return VERR_INTERNAL_ERROR;
6441	}
6442	pIf->fATAPI = enmType == PDMMEDIATYPE_DVD \|\| enmType == PDMMEDIATYPE_CDROM;
6443	pIf->fATAPIPassthrough = pIf->fATAPI ? (pIf->pDrvMedia->pfnSendCmd != NULL) : false;
6444
6445	/*
6446	* Allocate I/O buffer.
6447	*/
6448	if (pIf->fATAPI)
6449	pIf->cbSector = 2048;
6450	else
6451	pIf->cbSector = pIf->pDrvMedia->pfnGetSectorSize(pIf->pDrvMedia);
6452
6453	PVM pVM = PDMDevHlpGetVM(pDevIns);
6454	if (pIf->cbIOBuffer)
6455	{
6456	/* Buffer is (probably) already allocated. Validate the fields,
6457	* because memory corruption can also overwrite pIf->cbIOBuffer. */
6458	if (pIf->fATAPI)
6459	AssertRelease(pIf->cbIOBuffer == _128K);
6460	else
6461	AssertRelease(pIf->cbIOBuffer == ATA_MAX_MULT_SECTORS * pIf->cbSector);
6462	Assert(pIf->pbIOBufferR3);
6463	Assert(pIf->pbIOBufferR0 == MMHyperR3ToR0(pVM, pIf->pbIOBufferR3));
6464	Assert(pIf->pbIOBufferRC == MMHyperR3ToRC(pVM, pIf->pbIOBufferR3));
6465	}
6466	else
6467	{
6468	if (pIf->fATAPI)
6469	pIf->cbIOBuffer = _128K;
6470	else
6471	pIf->cbIOBuffer = ATA_MAX_MULT_SECTORS * pIf->cbSector;
6472	Assert(!pIf->pbIOBufferR3);
6473	rc = MMR3HyperAllocOnceNoRel(pVM, pIf->cbIOBuffer, 0, MM_TAG_PDM_DEVICE_USER, (void **)&pIf->pbIOBufferR3);
6474	if (RT_FAILURE(rc))
6475	return VERR_NO_MEMORY;
6476	pIf->pbIOBufferR0 = MMHyperR3ToR0(pVM, pIf->pbIOBufferR3);
6477	pIf->pbIOBufferRC = MMHyperR3ToRC(pVM, pIf->pbIOBufferR3);
6478	}
6479
6480	/*
6481	* Init geometry (only for non-CD/DVD media).
6482	*/
6483	if (pIf->fATAPI)
6484	{
6485	pIf->cTotalSectors = pIf->pDrvMedia->pfnGetSize(pIf->pDrvMedia) / pIf->cbSector;
6486	pIf->PCHSGeometry.cCylinders = 0; /* dummy */
6487	pIf->PCHSGeometry.cHeads = 0; /* dummy */
6488	pIf->PCHSGeometry.cSectors = 0; /* dummy */
6489	LogRel(("PIIX3 ATA: LUN#%d: CD/DVD, total number of sectors %Ld, passthrough %s\n", pIf->iLUN, pIf->cTotalSectors, (pIf->fATAPIPassthrough ? "enabled" : "disabled")));
6490	}
6491	else
6492	{
6493	pIf->cTotalSectors = pIf->pDrvMedia->pfnGetSize(pIf->pDrvMedia) / pIf->cbSector;
6494	rc = pIf->pDrvMedia->pfnBiosGetPCHSGeometry(pIf->pDrvMedia, &pIf->PCHSGeometry);
6495	if (rc == VERR_PDM_MEDIA_NOT_MOUNTED)
6496	{
6497	pIf->PCHSGeometry.cCylinders = 0;
6498	pIf->PCHSGeometry.cHeads = 16; /??/
6499	pIf->PCHSGeometry.cSectors = 63; /??/
6500	}
6501	else if (rc == VERR_PDM_GEOMETRY_NOT_SET)
6502	{
6503	pIf->PCHSGeometry.cCylinders = 0; /* autodetect marker */
6504	rc = VINF_SUCCESS;
6505	}
6506	AssertRC(rc);
6507
6508	if ( pIf->PCHSGeometry.cCylinders == 0
6509	\|\| pIf->PCHSGeometry.cHeads == 0
6510	\|\| pIf->PCHSGeometry.cSectors == 0
6511	)
6512	{
6513	uint64_t cCylinders = pIf->cTotalSectors / (16 * 63);
6514	pIf->PCHSGeometry.cCylinders = RT_MAX(RT_MIN(cCylinders, 16383), 1);
6515	pIf->PCHSGeometry.cHeads = 16;
6516	pIf->PCHSGeometry.cSectors = 63;
6517	/* Set the disk geometry information. Ignore errors. */
6518	pIf->pDrvMedia->pfnBiosSetPCHSGeometry(pIf->pDrvMedia, &pIf->PCHSGeometry);
6519	rc = VINF_SUCCESS;
6520	}
6521	LogRel(("PIIX3 ATA: LUN#%d: disk, PCHS=%u/%u/%u, total number of sectors %Ld\n", pIf->iLUN, pIf->PCHSGeometry.cCylinders, pIf->PCHSGeometry.cHeads, pIf->PCHSGeometry.cSectors, pIf->cTotalSectors));
6522
6523	if (pIf->pDrvMedia->pfnDiscard)
6524	LogRel(("PIIX3 ATA: LUN#%d: TRIM enabled\n", pIf->iLUN));
6525	}
6526	return rc;
6527	}
6528
6529
6530	/**
6531	* Attach command.
6532	*
6533	* This is called when we change block driver for the DVD drive.
6534	*
6535	* @returns VBox status code.
6536	* @param pDevIns The device instance.
6537	* @param iLUN The logical unit which is being detached.
6538	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
6539	*/
6540	static DECLCALLBACK(int) ataR3Attach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
6541	{
6542	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
6543	PATACONTROLLER pCtl;
6544	ATADevState *pIf;
6545	int rc;
6546	unsigned iController;
6547	unsigned iInterface;
6548
6549	AssertMsgReturn(fFlags & PDM_TACH_FLAGS_NOT_HOT_PLUG,
6550	("PIIX3IDE: Device does not support hotplugging\n"),
6551	VERR_INVALID_PARAMETER);
6552
6553	/*
6554	* Locate the controller and stuff.
6555	*/
6556	iController = iLUN / RT_ELEMENTS(pThis->aCts[0].aIfs);
6557	AssertReleaseMsg(iController < RT_ELEMENTS(pThis->aCts), ("iController=%d iLUN=%d\n", iController, iLUN));
6558	pCtl = &pThis->aCts[iController];
6559
6560	iInterface = iLUN % RT_ELEMENTS(pThis->aCts[0].aIfs);
6561	pIf = &pCtl->aIfs[iInterface];
6562
6563	/* the usual paranoia */
6564	AssertRelease(!pIf->pDrvBase);
6565	AssertRelease(!pIf->pDrvMedia);
6566	Assert(ATADEVSTATE_2_CONTROLLER(pIf) == pCtl);
6567	Assert(pIf->iLUN == iLUN);
6568
6569	/*
6570	* Try attach the block device and get the interfaces,
6571	* required as well as optional.
6572	*/
6573	rc = PDMDevHlpDriverAttach(pDevIns, pIf->iLUN, &pIf->IBase, &pIf->pDrvBase, NULL);
6574	if (RT_SUCCESS(rc))
6575	{
6576	rc = ataR3ConfigLun(pDevIns, pIf);
6577	/*
6578	* In case there is a medium inserted.
6579	*/
6580	ataR3MediumInserted(pIf);
6581	ataR3MediumTypeSet(pIf, ATA_MEDIA_TYPE_UNKNOWN);
6582	}
6583	else
6584	AssertMsgFailed(("Failed to attach LUN#%d. rc=%Rrc\n", pIf->iLUN, rc));
6585
6586	if (RT_FAILURE(rc))
6587	{
6588	pIf->pDrvBase = NULL;
6589	pIf->pDrvMedia = NULL;
6590	}
6591	return rc;
6592	}
6593
6594
6595	/**
6596	* Resume notification.
6597	*
6598	* @returns VBox status code.
6599	* @param pDevIns The device instance data.
6600	*/
6601	static DECLCALLBACK(void) ataR3Resume(PPDMDEVINS pDevIns)
6602	{
6603	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
6604	int rc;
6605
6606	Log(("%s:\n", __FUNCTION__));
6607	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aCts); i++)
6608	{
6609	if (pThis->aCts[i].fRedo && pThis->aCts[i].fRedoIdle)
6610	{
6611	rc = RTSemEventSignal(pThis->aCts[i].SuspendIOSem);
6612	AssertRC(rc);
6613	}
6614	}
6615	return;
6616	}
6617
6618
6619	/**
6620	* Checks if all (both) the async I/O threads have quiesced.
6621	*
6622	* @returns true on success.
6623	* @returns false when one or more threads is still processing.
6624	* @param pThis Pointer to the instance data.
6625	*/
6626	static bool ataR3AllAsyncIOIsIdle(PPDMDEVINS pDevIns)
6627	{
6628	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
6629
6630	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aCts); i++)
6631	if (pThis->aCts[i].AsyncIOThread != NIL_RTTHREAD)
6632	{
6633	bool fRc = ataR3AsyncIOIsIdle(&pThis->aCts[i], false /fStrict/);
6634	if (!fRc)
6635	{
6636	/* Make it signal PDM & itself when its done */
6637	PDMCritSectEnter(&pThis->aCts[i].AsyncIORequestLock, VERR_IGNORED);
6638	ASMAtomicWriteBool(&pThis->aCts[i].fSignalIdle, true);
6639	PDMCritSectLeave(&pThis->aCts[i].AsyncIORequestLock);
6640
6641	fRc = ataR3AsyncIOIsIdle(&pThis->aCts[i], false /fStrict/);
6642	if (!fRc)
6643	{
6644	#if 0 /** @todo Need to do some time tracking here... */
6645	LogRel(("PIIX3 ATA: Ctl#%u is still executing, DevSel=%d AIOIf=%d CmdIf0=%#04x CmdIf1=%#04x\n",
6646	i, pThis->aCts[i].iSelectedIf, pThis->aCts[i].iAIOIf,
6647	pThis->aCts[i].aIfs[0].uATARegCommand, pThis->aCts[i].aIfs[1].uATARegCommand));
6648	#endif
6649	return false;
6650	}
6651	}
6652	ASMAtomicWriteBool(&pThis->aCts[i].fSignalIdle, false);
6653	}
6654	return true;
6655	}
6656
6657	/**
6658	* Prepare state save and load operation.
6659	*
6660	* @returns VBox status code.
6661	* @param pDevIns Device instance of the device which registered the data unit.
6662	* @param pSSM SSM operation handle.
6663	*/
6664	static DECLCALLBACK(int) ataR3SaveLoadPrep(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
6665	{
6666	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
6667
6668	/* sanity - the suspend notification will wait on the async stuff. */
6669	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aCts); i++)
6670	AssertLogRelMsgReturn(ataR3AsyncIOIsIdle(&pThis->aCts[i], false /fStrict/),
6671	("i=%u\n", i),
6672	VERR_SSM_IDE_ASYNC_TIMEOUT);
6673	return VINF_SUCCESS;
6674	}
6675
6676	/**
6677	* @copydoc FNSSMDEVLIVEEXEC
6678	*/
6679	static DECLCALLBACK(int) ataR3LiveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uPass)
6680	{
6681	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
6682
6683	SSMR3PutU8(pSSM, pThis->u8Type);
6684	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aCts); i++)
6685	{
6686	SSMR3PutBool(pSSM, true); /* For controller enabled / disabled. */
6687	for (uint32_t j = 0; j < RT_ELEMENTS(pThis->aCts[i].aIfs); j++)
6688	{
6689	SSMR3PutBool(pSSM, pThis->aCts[i].aIfs[j].pDrvBase != NULL);
6690	SSMR3PutStrZ(pSSM, pThis->aCts[i].aIfs[j].szSerialNumber);
6691	SSMR3PutStrZ(pSSM, pThis->aCts[i].aIfs[j].szFirmwareRevision);
6692	SSMR3PutStrZ(pSSM, pThis->aCts[i].aIfs[j].szModelNumber);
6693	}
6694	}
6695
6696	return VINF_SSM_DONT_CALL_AGAIN;
6697	}
6698
6699	/**
6700	* @copydoc FNSSMDEVSAVEEXEC
6701	*/
6702	static DECLCALLBACK(int) ataR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
6703	{
6704	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
6705
6706	ataR3LiveExec(pDevIns, pSSM, SSM_PASS_FINAL);
6707
6708	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aCts); i++)
6709	{
6710	SSMR3PutU8(pSSM, pThis->aCts[i].iSelectedIf);
6711	SSMR3PutU8(pSSM, pThis->aCts[i].iAIOIf);
6712	SSMR3PutU8(pSSM, pThis->aCts[i].uAsyncIOState);
6713	SSMR3PutBool(pSSM, pThis->aCts[i].fChainedTransfer);
6714	SSMR3PutBool(pSSM, pThis->aCts[i].fReset);
6715	SSMR3PutBool(pSSM, pThis->aCts[i].fRedo);
6716	SSMR3PutBool(pSSM, pThis->aCts[i].fRedoIdle);
6717	SSMR3PutBool(pSSM, pThis->aCts[i].fRedoDMALastDesc);
6718	SSMR3PutMem(pSSM, &pThis->aCts[i].BmDma, sizeof(pThis->aCts[i].BmDma));
6719	SSMR3PutGCPhys32(pSSM, pThis->aCts[i].pFirstDMADesc);
6720	SSMR3PutGCPhys32(pSSM, pThis->aCts[i].pLastDMADesc);
6721	SSMR3PutGCPhys32(pSSM, pThis->aCts[i].pRedoDMABuffer);
6722	SSMR3PutU32(pSSM, pThis->aCts[i].cbRedoDMABuffer);
6723
6724	for (uint32_t j = 0; j < RT_ELEMENTS(pThis->aCts[i].aIfs); j++)
6725	{
6726	SSMR3PutBool(pSSM, pThis->aCts[i].aIfs[j].fLBA48);
6727	SSMR3PutBool(pSSM, pThis->aCts[i].aIfs[j].fATAPI);
6728	SSMR3PutBool(pSSM, pThis->aCts[i].aIfs[j].fIrqPending);
6729	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].cMultSectors);
6730	SSMR3PutU32(pSSM, pThis->aCts[i].aIfs[j].PCHSGeometry.cCylinders);
6731	SSMR3PutU32(pSSM, pThis->aCts[i].aIfs[j].PCHSGeometry.cHeads);
6732	SSMR3PutU32(pSSM, pThis->aCts[i].aIfs[j].PCHSGeometry.cSectors);
6733	SSMR3PutU32(pSSM, pThis->aCts[i].aIfs[j].cSectorsPerIRQ);
6734	SSMR3PutU64(pSSM, pThis->aCts[i].aIfs[j].cTotalSectors);
6735	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].uATARegFeature);
6736	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].uATARegFeatureHOB);
6737	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].uATARegError);
6738	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].uATARegNSector);
6739	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].uATARegNSectorHOB);
6740	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].uATARegSector);
6741	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].uATARegSectorHOB);
6742	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].uATARegLCyl);
6743	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].uATARegLCylHOB);
6744	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].uATARegHCyl);
6745	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].uATARegHCylHOB);
6746	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].uATARegSelect);
6747	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].uATARegStatus);
6748	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].uATARegCommand);
6749	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].uATARegDevCtl);
6750	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].uATATransferMode);
6751	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].uTxDir);
6752	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].iBeginTransfer);
6753	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].iSourceSink);
6754	SSMR3PutBool(pSSM, pThis->aCts[i].aIfs[j].fDMA);
6755	SSMR3PutBool(pSSM, pThis->aCts[i].aIfs[j].fATAPITransfer);
6756	SSMR3PutU32(pSSM, pThis->aCts[i].aIfs[j].cbTotalTransfer);
6757	SSMR3PutU32(pSSM, pThis->aCts[i].aIfs[j].cbElementaryTransfer);
6758	SSMR3PutU32(pSSM, pThis->aCts[i].aIfs[j].iIOBufferCur);
6759	SSMR3PutU32(pSSM, pThis->aCts[i].aIfs[j].iIOBufferEnd);
6760	SSMR3PutU32(pSSM, pThis->aCts[i].aIfs[j].iIOBufferPIODataStart);
6761	SSMR3PutU32(pSSM, pThis->aCts[i].aIfs[j].iIOBufferPIODataEnd);
6762	SSMR3PutU32(pSSM, pThis->aCts[i].aIfs[j].iATAPILBA);
6763	SSMR3PutU32(pSSM, pThis->aCts[i].aIfs[j].cbATAPISector);
6764	SSMR3PutMem(pSSM, &pThis->aCts[i].aIfs[j].aATAPICmd, sizeof(pThis->aCts[i].aIfs[j].aATAPICmd));
6765	SSMR3PutMem(pSSM, &pThis->aCts[i].aIfs[j].abATAPISense, sizeof(pThis->aCts[i].aIfs[j].abATAPISense));
6766	SSMR3PutU8(pSSM, pThis->aCts[i].aIfs[j].cNotifiedMediaChange);
6767	SSMR3PutU32(pSSM, pThis->aCts[i].aIfs[j].MediaEventStatus);
6768	SSMR3PutMem(pSSM, &pThis->aCts[i].aIfs[j].Led, sizeof(pThis->aCts[i].aIfs[j].Led));
6769	SSMR3PutU32(pSSM, pThis->aCts[i].aIfs[j].cbIOBuffer);
6770	if (pThis->aCts[i].aIfs[j].cbIOBuffer)
6771	SSMR3PutMem(pSSM, pThis->aCts[i].aIfs[j].CTX_SUFF(pbIOBuffer), pThis->aCts[i].aIfs[j].cbIOBuffer);
6772	else
6773	Assert(pThis->aCts[i].aIfs[j].CTX_SUFF(pbIOBuffer) == NULL);
6774	}
6775	}
6776
6777	return SSMR3PutU32(pSSM, ~0); /* sanity/terminator */
6778	}
6779
6780	/**
6781	* Converts the LUN number into a message string.
6782	*/
6783	static const char *ataR3StringifyLun(unsigned iLun)
6784	{
6785	switch (iLun)
6786	{
6787	case 0: return "primary master";
6788	case 1: return "primary slave";
6789	case 2: return "secondary master";
6790	case 3: return "secondary slave";
6791	default: AssertFailedReturn("unknown lun");
6792	}
6793	}
6794
6795	/**
6796	* FNSSMDEVLOADEXEC
6797	*/
6798	static DECLCALLBACK(int) ataR3LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
6799	{
6800	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
6801	int rc;
6802	uint32_t u32;
6803
6804	if ( uVersion != ATA_SAVED_STATE_VERSION
6805	&& uVersion != ATA_SAVED_STATE_VERSION_VBOX_30
6806	&& uVersion != ATA_SAVED_STATE_VERSION_WITHOUT_FULL_SENSE
6807	&& uVersion != ATA_SAVED_STATE_VERSION_WITHOUT_EVENT_STATUS
6808	&& uVersion != ATA_SAVED_STATE_VERSION_WITH_BOOL_TYPE)
6809	{
6810	AssertMsgFailed(("uVersion=%d\n", uVersion));
6811	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
6812	}
6813
6814	/*
6815	* Verify the configuration.
6816	*/
6817	if (uVersion > ATA_SAVED_STATE_VERSION_VBOX_30)
6818	{
6819	uint8_t u8Type;
6820	rc = SSMR3GetU8(pSSM, &u8Type);
6821	AssertRCReturn(rc, rc);
6822	if (u8Type != pThis->u8Type)
6823	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Config mismatch: u8Type - saved=%u config=%u"), u8Type, pThis->u8Type);
6824
6825	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aCts); i++)
6826	{
6827	bool fEnabled;
6828	rc = SSMR3GetBool(pSSM, &fEnabled);
6829	AssertRCReturn(rc, rc);
6830	if (!fEnabled)
6831	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Ctr#%u onfig mismatch: fEnabled != true"), i);
6832
6833	for (uint32_t j = 0; j < RT_ELEMENTS(pThis->aCts[i].aIfs); j++)
6834	{
6835	ATADevState const *pIf = &pThis->aCts[i].aIfs[j];
6836
6837	bool fInUse;
6838	rc = SSMR3GetBool(pSSM, &fInUse);
6839	AssertRCReturn(rc, rc);
6840	if (fInUse != (pIf->pDrvBase != NULL))
6841	return SSMR3SetCfgError(pSSM, RT_SRC_POS,
6842	N_("The %s VM is missing a %s device. Please make sure the source and target VMs have compatible storage configurations"),
6843	fInUse ? "target" : "source", ataR3StringifyLun(pIf->iLUN) );
6844
6845	char szSerialNumber[ATA_SERIAL_NUMBER_LENGTH+1];
6846	rc = SSMR3GetStrZ(pSSM, szSerialNumber, sizeof(szSerialNumber));
6847	AssertRCReturn(rc, rc);
6848	if (strcmp(szSerialNumber, pIf->szSerialNumber))
6849	LogRel(("PIIX3 ATA: LUN#%u config mismatch: Serial number - saved='%s' config='%s'\n",
6850	pIf->iLUN, szSerialNumber, pIf->szSerialNumber));
6851
6852	char szFirmwareRevision[ATA_FIRMWARE_REVISION_LENGTH+1];
6853	rc = SSMR3GetStrZ(pSSM, szFirmwareRevision, sizeof(szFirmwareRevision));
6854	AssertRCReturn(rc, rc);
6855	if (strcmp(szFirmwareRevision, pIf->szFirmwareRevision))
6856	LogRel(("PIIX3 ATA: LUN#%u config mismatch: Firmware revision - saved='%s' config='%s'\n",
6857	pIf->iLUN, szFirmwareRevision, pIf->szFirmwareRevision));
6858
6859	char szModelNumber[ATA_MODEL_NUMBER_LENGTH+1];
6860	rc = SSMR3GetStrZ(pSSM, szModelNumber, sizeof(szModelNumber));
6861	AssertRCReturn(rc, rc);
6862	if (strcmp(szModelNumber, pIf->szModelNumber))
6863	LogRel(("PIIX3 ATA: LUN#%u config mismatch: Model number - saved='%s' config='%s'\n",
6864	pIf->iLUN, szModelNumber, pIf->szModelNumber));
6865	}
6866	}
6867	}
6868	if (uPass != SSM_PASS_FINAL)
6869	return VINF_SUCCESS;
6870
6871	/*
6872	* Restore valid parts of the PCIATAState structure
6873	*/
6874	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aCts); i++)
6875	{
6876	/* integrity check */
6877	if (!ataR3AsyncIOIsIdle(&pThis->aCts[i], false))
6878	{
6879	AssertMsgFailed(("Async I/O for controller %d is active\n", i));
6880	return VERR_INTERNAL_ERROR_4;
6881	}
6882
6883	SSMR3GetU8(pSSM, &pThis->aCts[i].iSelectedIf);
6884	SSMR3GetU8(pSSM, &pThis->aCts[i].iAIOIf);
6885	SSMR3GetU8(pSSM, &pThis->aCts[i].uAsyncIOState);
6886	SSMR3GetBool(pSSM, &pThis->aCts[i].fChainedTransfer);
6887	SSMR3GetBool(pSSM, (bool *)&pThis->aCts[i].fReset);
6888	SSMR3GetBool(pSSM, (bool *)&pThis->aCts[i].fRedo);
6889	SSMR3GetBool(pSSM, (bool *)&pThis->aCts[i].fRedoIdle);
6890	SSMR3GetBool(pSSM, (bool *)&pThis->aCts[i].fRedoDMALastDesc);
6891	SSMR3GetMem(pSSM, &pThis->aCts[i].BmDma, sizeof(pThis->aCts[i].BmDma));
6892	SSMR3GetGCPhys32(pSSM, &pThis->aCts[i].pFirstDMADesc);
6893	SSMR3GetGCPhys32(pSSM, &pThis->aCts[i].pLastDMADesc);
6894	SSMR3GetGCPhys32(pSSM, &pThis->aCts[i].pRedoDMABuffer);
6895	SSMR3GetU32(pSSM, &pThis->aCts[i].cbRedoDMABuffer);
6896
6897	for (uint32_t j = 0; j < RT_ELEMENTS(pThis->aCts[i].aIfs); j++)
6898	{
6899	SSMR3GetBool(pSSM, &pThis->aCts[i].aIfs[j].fLBA48);
6900	SSMR3GetBool(pSSM, &pThis->aCts[i].aIfs[j].fATAPI);
6901	SSMR3GetBool(pSSM, &pThis->aCts[i].aIfs[j].fIrqPending);
6902	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].cMultSectors);
6903	SSMR3GetU32(pSSM, &pThis->aCts[i].aIfs[j].PCHSGeometry.cCylinders);
6904	SSMR3GetU32(pSSM, &pThis->aCts[i].aIfs[j].PCHSGeometry.cHeads);
6905	SSMR3GetU32(pSSM, &pThis->aCts[i].aIfs[j].PCHSGeometry.cSectors);
6906	SSMR3GetU32(pSSM, &pThis->aCts[i].aIfs[j].cSectorsPerIRQ);
6907	SSMR3GetU64(pSSM, &pThis->aCts[i].aIfs[j].cTotalSectors);
6908	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].uATARegFeature);
6909	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].uATARegFeatureHOB);
6910	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].uATARegError);
6911	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].uATARegNSector);
6912	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].uATARegNSectorHOB);
6913	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].uATARegSector);
6914	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].uATARegSectorHOB);
6915	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].uATARegLCyl);
6916	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].uATARegLCylHOB);
6917	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].uATARegHCyl);
6918	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].uATARegHCylHOB);
6919	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].uATARegSelect);
6920	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].uATARegStatus);
6921	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].uATARegCommand);
6922	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].uATARegDevCtl);
6923	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].uATATransferMode);
6924	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].uTxDir);
6925	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].iBeginTransfer);
6926	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].iSourceSink);
6927	SSMR3GetBool(pSSM, &pThis->aCts[i].aIfs[j].fDMA);
6928	SSMR3GetBool(pSSM, &pThis->aCts[i].aIfs[j].fATAPITransfer);
6929	SSMR3GetU32(pSSM, &pThis->aCts[i].aIfs[j].cbTotalTransfer);
6930	SSMR3GetU32(pSSM, &pThis->aCts[i].aIfs[j].cbElementaryTransfer);
6931	/* NB: cbPIOTransferLimit could be saved/restored but it's sufficient
6932	* to re-calculate it here, with a tiny risk that it could be
6933	* unnecessarily low for the current transfer only. Could be changed
6934	* when changing the saved state in the future.
6935	*/
6936	pThis->aCts[i].aIfs[j].cbPIOTransferLimit = (pThis->aCts[i].aIfs[j].uATARegHCyl << 8) \| pThis->aCts[i].aIfs[j].uATARegLCyl;
6937	SSMR3GetU32(pSSM, &pThis->aCts[i].aIfs[j].iIOBufferCur);
6938	SSMR3GetU32(pSSM, &pThis->aCts[i].aIfs[j].iIOBufferEnd);
6939	SSMR3GetU32(pSSM, &pThis->aCts[i].aIfs[j].iIOBufferPIODataStart);
6940	SSMR3GetU32(pSSM, &pThis->aCts[i].aIfs[j].iIOBufferPIODataEnd);
6941	SSMR3GetU32(pSSM, &pThis->aCts[i].aIfs[j].iATAPILBA);
6942	SSMR3GetU32(pSSM, &pThis->aCts[i].aIfs[j].cbATAPISector);
6943	SSMR3GetMem(pSSM, &pThis->aCts[i].aIfs[j].aATAPICmd, sizeof(pThis->aCts[i].aIfs[j].aATAPICmd));
6944	if (uVersion > ATA_SAVED_STATE_VERSION_WITHOUT_FULL_SENSE)
6945	{
6946	SSMR3GetMem(pSSM, pThis->aCts[i].aIfs[j].abATAPISense, sizeof(pThis->aCts[i].aIfs[j].abATAPISense));
6947	}
6948	else
6949	{
6950	uint8_t uATAPISenseKey, uATAPIASC;
6951	memset(pThis->aCts[i].aIfs[j].abATAPISense, '\0', sizeof(pThis->aCts[i].aIfs[j].abATAPISense));
6952	pThis->aCts[i].aIfs[j].abATAPISense[0] = 0x70 \| (1 << 7);
6953	pThis->aCts[i].aIfs[j].abATAPISense[7] = 10;
6954	SSMR3GetU8(pSSM, &uATAPISenseKey);
6955	SSMR3GetU8(pSSM, &uATAPIASC);
6956	pThis->aCts[i].aIfs[j].abATAPISense[2] = uATAPISenseKey & 0x0f;
6957	pThis->aCts[i].aIfs[j].abATAPISense[12] = uATAPIASC;
6958	}
6959	/** @todo triple-check this hack after passthrough is working */
6960	SSMR3GetU8(pSSM, &pThis->aCts[i].aIfs[j].cNotifiedMediaChange);
6961	if (uVersion > ATA_SAVED_STATE_VERSION_WITHOUT_EVENT_STATUS)
6962	SSMR3GetU32(pSSM, (uint32_t*)&pThis->aCts[i].aIfs[j].MediaEventStatus);
6963	else
6964	pThis->aCts[i].aIfs[j].MediaEventStatus = ATA_EVENT_STATUS_UNCHANGED;
6965	SSMR3GetMem(pSSM, &pThis->aCts[i].aIfs[j].Led, sizeof(pThis->aCts[i].aIfs[j].Led));
6966	SSMR3GetU32(pSSM, &pThis->aCts[i].aIfs[j].cbIOBuffer);
6967	if (pThis->aCts[i].aIfs[j].cbIOBuffer)
6968	{
6969	if (pThis->aCts[i].aIfs[j].CTX_SUFF(pbIOBuffer))
6970	SSMR3GetMem(pSSM, pThis->aCts[i].aIfs[j].CTX_SUFF(pbIOBuffer), pThis->aCts[i].aIfs[j].cbIOBuffer);
6971	else
6972	{
6973	LogRel(("ATA: No buffer for %d/%d\n", i, j));
6974	if (SSMR3HandleGetAfter(pSSM) != SSMAFTER_DEBUG_IT)
6975	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("No buffer for %d/%d"), i, j);
6976
6977	/* skip the buffer if we're loading for the debugger / animator. */
6978	uint8_t u8Ignored;
6979	size_t cbLeft = pThis->aCts[i].aIfs[j].cbIOBuffer;
6980	while (cbLeft-- > 0)
6981	SSMR3GetU8(pSSM, &u8Ignored);
6982	}
6983	}
6984	else
6985	Assert(pThis->aCts[i].aIfs[j].CTX_SUFF(pbIOBuffer) == NULL);
6986	}
6987	}
6988	if (uVersion <= ATA_SAVED_STATE_VERSION_VBOX_30)
6989	SSMR3GetU8(pSSM, &pThis->u8Type);
6990
6991	rc = SSMR3GetU32(pSSM, &u32);
6992	if (RT_FAILURE(rc))
6993	return rc;
6994	if (u32 != ~0U)
6995	{
6996	AssertMsgFailed(("u32=%#x expected ~0\n", u32));
6997	rc = VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
6998	return rc;
6999	}
7000
7001	return VINF_SUCCESS;
7002	}
7003
7004
7005	/**
7006	* Callback employed by ataSuspend and ataR3PowerOff.
7007	*
7008	* @returns true if we've quiesced, false if we're still working.
7009	* @param pDevIns The device instance.
7010	*/
7011	static DECLCALLBACK(bool) ataR3IsAsyncSuspendOrPowerOffDone(PPDMDEVINS pDevIns)
7012	{
7013	return ataR3AllAsyncIOIsIdle(pDevIns);
7014	}
7015
7016
7017	/**
7018	* Common worker for ataSuspend and ataR3PowerOff.
7019	*/
7020	static void ataR3SuspendOrPowerOff(PPDMDEVINS pDevIns)
7021	{
7022	if (!ataR3AllAsyncIOIsIdle(pDevIns))
7023	PDMDevHlpSetAsyncNotification(pDevIns, ataR3IsAsyncSuspendOrPowerOffDone);
7024	}
7025
7026
7027	/**
7028	* Power Off notification.
7029	*
7030	* @returns VBox status code.
7031	* @param pDevIns The device instance data.
7032	*/
7033	static DECLCALLBACK(void) ataR3PowerOff(PPDMDEVINS pDevIns)
7034	{
7035	Log(("%s:\n", __FUNCTION__));
7036	ataR3SuspendOrPowerOff(pDevIns);
7037	}
7038
7039
7040	/**
7041	* Suspend notification.
7042	*
7043	* @returns VBox status code.
7044	* @param pDevIns The device instance data.
7045	*/
7046	static DECLCALLBACK(void) ataR3Suspend(PPDMDEVINS pDevIns)
7047	{
7048	Log(("%s:\n", __FUNCTION__));
7049	ataR3SuspendOrPowerOff(pDevIns);
7050	}
7051
7052
7053	/**
7054	* Callback employed by ataR3Reset.
7055	*
7056	* @returns true if we've quiesced, false if we're still working.
7057	* @param pDevIns The device instance.
7058	*/
7059	static DECLCALLBACK(bool) ataR3IsAsyncResetDone(PPDMDEVINS pDevIns)
7060	{
7061	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
7062
7063	if (!ataR3AllAsyncIOIsIdle(pDevIns))
7064	return false;
7065
7066	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aCts); i++)
7067	{
7068	PDMCritSectEnter(&pThis->aCts[i].lock, VERR_INTERNAL_ERROR);
7069	for (uint32_t j = 0; j < RT_ELEMENTS(pThis->aCts[i].aIfs); j++)
7070	ataR3ResetDevice(&pThis->aCts[i].aIfs[j]);
7071	PDMCritSectLeave(&pThis->aCts[i].lock);
7072	}
7073	return true;
7074	}
7075
7076
7077	/**
7078	* Common reset worker for ataR3Reset and ataR3Construct.
7079	*
7080	* @returns VBox status code.
7081	* @param pDevIns The device instance data.
7082	* @param fConstruct Indicates who is calling.
7083	*/
7084	static int ataR3ResetCommon(PPDMDEVINS pDevIns, bool fConstruct)
7085	{
7086	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
7087
7088	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aCts); i++)
7089	{
7090	PDMCritSectEnter(&pThis->aCts[i].lock, VERR_INTERNAL_ERROR);
7091
7092	pThis->aCts[i].iSelectedIf = 0;
7093	pThis->aCts[i].iAIOIf = 0;
7094	pThis->aCts[i].BmDma.u8Cmd = 0;
7095	/* Report that both drives present on the bus are in DMA mode. This
7096	* pretends that there is a BIOS that has set it up. Normal reset
7097	* default is 0x00. */
7098	pThis->aCts[i].BmDma.u8Status = (pThis->aCts[i].aIfs[0].pDrvBase != NULL ? BM_STATUS_D0DMA : 0)
7099	\| (pThis->aCts[i].aIfs[1].pDrvBase != NULL ? BM_STATUS_D1DMA : 0);
7100	pThis->aCts[i].BmDma.pvAddr = 0;
7101
7102	pThis->aCts[i].fReset = true;
7103	pThis->aCts[i].fRedo = false;
7104	pThis->aCts[i].fRedoIdle = false;
7105	ataR3AsyncIOClearRequests(&pThis->aCts[i]);
7106	Log2(("%s: Ctl#%d: message to async I/O thread, reset controller\n", __FUNCTION__, i));
7107	ataHCAsyncIOPutRequest(&pThis->aCts[i], &g_ataResetARequest);
7108	ataHCAsyncIOPutRequest(&pThis->aCts[i], &g_ataResetCRequest);
7109
7110	PDMCritSectLeave(&pThis->aCts[i].lock);
7111	}
7112
7113	int rcRet = VINF_SUCCESS;
7114	if (!fConstruct)
7115	{
7116	/*
7117	* Setup asynchronous notification completion if the requests haven't
7118	* completed yet.
7119	*/
7120	if (!ataR3IsAsyncResetDone(pDevIns))
7121	PDMDevHlpSetAsyncNotification(pDevIns, ataR3IsAsyncResetDone);
7122	}
7123	else
7124	{
7125	/*
7126	* Wait for the requests for complete.
7127	*
7128	* Would be real nice if we could do it all from EMT(0) and not
7129	* involve the worker threads, then we could dispense with all the
7130	* waiting and semaphore ping-pong here...
7131	*/
7132	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aCts); i++)
7133	{
7134	if (pThis->aCts[i].AsyncIOThread != NIL_RTTHREAD)
7135	{
7136	int rc = PDMCritSectEnter(&pThis->aCts[i].AsyncIORequestLock, VERR_IGNORED);
7137	AssertRC(rc);
7138
7139	ASMAtomicWriteBool(&pThis->aCts[i].fSignalIdle, true);
7140	rc = RTThreadUserReset(pThis->aCts[i].AsyncIOThread);
7141	AssertRC(rc);
7142
7143	rc = PDMCritSectLeave(&pThis->aCts[i].AsyncIORequestLock);
7144	AssertRC(rc);
7145
7146	if (!ataR3AsyncIOIsIdle(&pThis->aCts[i], false /fStrict/))
7147	{
7148	rc = RTThreadUserWait(pThis->aCts[i].AsyncIOThread, 301000 /ms*/);
7149	if (RT_FAILURE(rc))
7150	rc = RTThreadUserWait(pThis->aCts[i].AsyncIOThread, 1000 /ms/);
7151	if (RT_FAILURE(rc))
7152	{
7153	AssertRC(rc);
7154	rcRet = rc;
7155	}
7156	}
7157	}
7158	ASMAtomicWriteBool(&pThis->aCts[i].fSignalIdle, false);
7159	}
7160	if (RT_SUCCESS(rcRet))
7161	{
7162	rcRet = ataR3IsAsyncResetDone(pDevIns) ? VINF_SUCCESS : VERR_INTERNAL_ERROR;
7163	AssertRC(rcRet);
7164	}
7165	}
7166	return rcRet;
7167	}
7168
7169	/**
7170	* Reset notification.
7171	*
7172	* @param pDevIns The device instance data.
7173	*/
7174	static DECLCALLBACK(void) ataR3Reset(PPDMDEVINS pDevIns)
7175	{
7176	ataR3ResetCommon(pDevIns, false /fConstruct/);
7177	}
7178
7179	/**
7180	* @copydoc FNPDMDEVRELOCATE
7181	*/
7182	static DECLCALLBACK(void) ataR3Relocate(PPDMDEVINS pDevIns, RTGCINTPTR offDelta)
7183	{
7184	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
7185
7186	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aCts); i++)
7187	{
7188	pThis->aCts[i].pDevInsRC += offDelta;
7189	pThis->aCts[i].aIfs[0].pDevInsRC += offDelta;
7190	pThis->aCts[i].aIfs[0].pControllerRC += offDelta;
7191	ataR3RelocBuffer(pDevIns, &pThis->aCts[i].aIfs[0]);
7192	pThis->aCts[i].aIfs[1].pDevInsRC += offDelta;
7193	pThis->aCts[i].aIfs[1].pControllerRC += offDelta;
7194	ataR3RelocBuffer(pDevIns, &pThis->aCts[i].aIfs[1]);
7195	}
7196	}
7197
7198	/**
7199	* Destroy a driver instance.
7200	*
7201	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
7202	* resources can be freed correctly.
7203	*
7204	* @param pDevIns The device instance data.
7205	*/
7206	static DECLCALLBACK(int) ataR3Destruct(PPDMDEVINS pDevIns)
7207	{
7208	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
7209	int rc;
7210
7211	Log(("ataR3Destruct\n"));
7212	PDMDEV_CHECK_VERSIONS_RETURN_QUIET(pDevIns);
7213
7214	/*
7215	* Tell the async I/O threads to terminate.
7216	*/
7217	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aCts); i++)
7218	{
7219	if (pThis->aCts[i].AsyncIOThread != NIL_RTTHREAD)
7220	{
7221	ASMAtomicWriteU32(&pThis->aCts[i].fShutdown, true);
7222	rc = SUPSemEventSignal(pThis->aCts[i].pSupDrvSession, pThis->aCts[i].hAsyncIOSem);
7223	AssertRC(rc);
7224	rc = RTSemEventSignal(pThis->aCts[i].SuspendIOSem);
7225	AssertRC(rc);
7226	}
7227	}
7228
7229	/*
7230	* Wait for the threads to terminate before destroying their resources.
7231	*/
7232	for (unsigned i = 0; i < RT_ELEMENTS(pThis->aCts); i++)
7233	{
7234	if (pThis->aCts[i].AsyncIOThread != NIL_RTTHREAD)
7235	{
7236	rc = RTThreadWait(pThis->aCts[i].AsyncIOThread, 30000 /* 30 s*/, NULL);
7237	if (RT_SUCCESS(rc))
7238	pThis->aCts[i].AsyncIOThread = NIL_RTTHREAD;
7239	else
7240	LogRel(("PIIX3 ATA Dtor: Ctl#%u is still executing, DevSel=%d AIOIf=%d CmdIf0=%#04x CmdIf1=%#04x rc=%Rrc\n",
7241	i, pThis->aCts[i].iSelectedIf, pThis->aCts[i].iAIOIf,
7242	pThis->aCts[i].aIfs[0].uATARegCommand, pThis->aCts[i].aIfs[1].uATARegCommand, rc));
7243	}
7244	}
7245
7246	/*
7247	* Free resources.
7248	*/
7249	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aCts); i++)
7250	{
7251	if (PDMCritSectIsInitialized(&pThis->aCts[i].AsyncIORequestLock))
7252	PDMR3CritSectDelete(&pThis->aCts[i].AsyncIORequestLock);
7253	if (pThis->aCts[i].hAsyncIOSem != NIL_SUPSEMEVENT)
7254	{
7255	SUPSemEventClose(pThis->aCts[i].pSupDrvSession, pThis->aCts[i].hAsyncIOSem);
7256	pThis->aCts[i].hAsyncIOSem = NIL_SUPSEMEVENT;
7257	}
7258	if (pThis->aCts[i].SuspendIOSem != NIL_RTSEMEVENT)
7259	{
7260	RTSemEventDestroy(pThis->aCts[i].SuspendIOSem);
7261	pThis->aCts[i].SuspendIOSem = NIL_RTSEMEVENT;
7262	}
7263
7264	/* try one final time */
7265	if (pThis->aCts[i].AsyncIOThread != NIL_RTTHREAD)
7266	{
7267	rc = RTThreadWait(pThis->aCts[i].AsyncIOThread, 1 /ms/, NULL);
7268	if (RT_SUCCESS(rc))
7269	{
7270	pThis->aCts[i].AsyncIOThread = NIL_RTTHREAD;
7271	LogRel(("PIIX3 ATA Dtor: Ctl#%u actually completed.\n", i));
7272	}
7273	}
7274
7275	for (uint32_t iIf = 0; iIf < RT_ELEMENTS(pThis->aCts[i].aIfs); iIf++)
7276	{
7277	if (pThis->aCts[i].aIfs[iIf].pTrackList)
7278	{
7279	ATAPIPassthroughTrackListDestroy(pThis->aCts[i].aIfs[iIf].pTrackList);
7280	pThis->aCts[i].aIfs[iIf].pTrackList = NULL;
7281	}
7282	}
7283	}
7284
7285	return VINF_SUCCESS;
7286	}
7287
7288	/**
7289	* Convert config value to DEVPCBIOSBOOT.
7290	*
7291	* @returns VBox status code.
7292	* @param pDevIns The device instance data.
7293	* @param pCfg Configuration handle.
7294	* @param penmChipset Where to store the chipset type.
7295	*/
7296	static int ataR3ControllerFromCfg(PPDMDEVINS pDevIns, PCFGMNODE pCfg, CHIPSET *penmChipset)
7297	{
7298	char szType[20];
7299
7300	int rc = CFGMR3QueryStringDef(pCfg, "Type", &szType[0], sizeof(szType), "PIIX4");
7301	if (RT_FAILURE(rc))
7302	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS,
7303	N_("Configuration error: Querying \"Type\" as a string failed"));
7304	if (!strcmp(szType, "PIIX3"))
7305	*penmChipset = CHIPSET_PIIX3;
7306	else if (!strcmp(szType, "PIIX4"))
7307	*penmChipset = CHIPSET_PIIX4;
7308	else if (!strcmp(szType, "ICH6"))
7309	*penmChipset = CHIPSET_ICH6;
7310	else
7311	{
7312	PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS,
7313	N_("Configuration error: The \"Type\" value \"%s\" is unknown"),
7314	szType);
7315	rc = VERR_INTERNAL_ERROR;
7316	}
7317	return rc;
7318	}
7319
7320	/**
7321	* @interface_method_impl{PDMDEVREG,pfnConstruct}
7322	*/
7323	static DECLCALLBACK(int) ataR3Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
7324	{
7325	PCIATAState pThis = PDMINS_2_DATA(pDevIns, PCIATAState );
7326	PPDMIBASE pBase;
7327	int rc;
7328	bool fRCEnabled;
7329	bool fR0Enabled;
7330	uint32_t DelayIRQMillies;
7331
7332	Assert(iInstance == 0);
7333	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
7334
7335	/*
7336	* Initialize NIL handle values (for the destructor).
7337	*/
7338	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aCts); i++)
7339	{
7340	pThis->aCts[i].hAsyncIOSem = NIL_SUPSEMEVENT;
7341	pThis->aCts[i].SuspendIOSem = NIL_RTSEMEVENT;
7342	pThis->aCts[i].AsyncIOThread = NIL_RTTHREAD;
7343	}
7344
7345	/*
7346	* Validate and read configuration.
7347	*/
7348	if (!CFGMR3AreValuesValid(pCfg,
7349	"GCEnabled\0"
7350	"R0Enabled\0"
7351	"IRQDelay\0"
7352	"Type\0")
7353	/** @todo \|\| invalid keys */)
7354	return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
7355	N_("PIIX3 configuration error: unknown option specified"));
7356
7357	rc = CFGMR3QueryBoolDef(pCfg, "GCEnabled", &fRCEnabled, true);
7358	if (RT_FAILURE(rc))
7359	return PDMDEV_SET_ERROR(pDevIns, rc,
7360	N_("PIIX3 configuration error: failed to read GCEnabled as boolean"));
7361	Log(("%s: fRCEnabled=%d\n", __FUNCTION__, fRCEnabled));
7362
7363	rc = CFGMR3QueryBoolDef(pCfg, "R0Enabled", &fR0Enabled, true);
7364	if (RT_FAILURE(rc))
7365	return PDMDEV_SET_ERROR(pDevIns, rc,
7366	N_("PIIX3 configuration error: failed to read R0Enabled as boolean"));
7367	Log(("%s: fR0Enabled=%d\n", __FUNCTION__, fR0Enabled));
7368
7369	rc = CFGMR3QueryU32Def(pCfg, "IRQDelay", &DelayIRQMillies, 0);
7370	if (RT_FAILURE(rc))
7371	return PDMDEV_SET_ERROR(pDevIns, rc,
7372	N_("PIIX3 configuration error: failed to read IRQDelay as integer"));
7373	Log(("%s: DelayIRQMillies=%d\n", __FUNCTION__, DelayIRQMillies));
7374	Assert(DelayIRQMillies < 50);
7375
7376	CHIPSET enmChipset = CHIPSET_PIIX3;
7377	rc = ataR3ControllerFromCfg(pDevIns, pCfg, &enmChipset);
7378	if (RT_FAILURE(rc))
7379	return rc;
7380	pThis->u8Type = (uint8_t)enmChipset;
7381
7382	/*
7383	* Initialize data (most of it anyway).
7384	*/
7385	/* Status LUN. */
7386	pThis->IBase.pfnQueryInterface = ataR3Status_QueryInterface;
7387	pThis->ILeds.pfnQueryStatusLed = ataR3Status_QueryStatusLed;
7388
7389	/* PCI configuration space. */
7390	PCIDevSetVendorId(&pThis->dev, 0x8086); /* Intel */
7391
7392	/*
7393	* When adding more IDE chipsets, don't forget to update pci_bios_init_device()
7394	* as it explicitly checks for PCI id for IDE controllers.
7395	*/
7396	switch (pThis->u8Type)
7397	{
7398	case CHIPSET_ICH6:
7399	PCIDevSetDeviceId(&pThis->dev, 0x269e); /* ICH6 IDE */
7400	/** @todo: do we need it? Do we need anything else? */
7401	pThis->dev.config[0x48] = 0x00; /* UDMACTL */
7402	pThis->dev.config[0x4A] = 0x00; /* UDMATIM */
7403	pThis->dev.config[0x4B] = 0x00;
7404	{
7405	/*
7406	* See www.intel.com/Assets/PDF/manual/298600.pdf p. 30
7407	* Report
7408	* WR_Ping-Pong_EN: must be set
7409	* PCR0, PCR1: 80-pin primary cable reporting for both disks
7410	* SCR0, SCR1: 80-pin secondary cable reporting for both disks
7411	*/
7412	uint16_t u16Config = (1<<10) \| (1<<7) \| (1<<6) \| (1<<5) \| (1<<4) ;
7413	pThis->dev.config[0x54] = u16Config & 0xff;
7414	pThis->dev.config[0x55] = u16Config >> 8;
7415	}
7416	break;
7417	case CHIPSET_PIIX4:
7418	PCIDevSetDeviceId(&pThis->dev, 0x7111); /* PIIX4 IDE */
7419	PCIDevSetRevisionId(&pThis->dev, 0x01); /* PIIX4E */
7420	pThis->dev.config[0x48] = 0x00; /* UDMACTL */
7421	pThis->dev.config[0x4A] = 0x00; /* UDMATIM */
7422	pThis->dev.config[0x4B] = 0x00;
7423	break;
7424	case CHIPSET_PIIX3:
7425	PCIDevSetDeviceId(&pThis->dev, 0x7010); /* PIIX3 IDE */
7426	break;
7427	default:
7428	AssertMsgFailed(("Unsupported IDE chipset type: %d\n", pThis->u8Type));
7429	}
7430
7431	PCIDevSetCommand( &pThis->dev, PCI_COMMAND_IOACCESS \| PCI_COMMAND_MEMACCESS \| PCI_COMMAND_BUSMASTER);
7432	PCIDevSetClassProg( &pThis->dev, 0x8a); /* programming interface = PCI_IDE bus master is supported */
7433	PCIDevSetClassSub( &pThis->dev, 0x01); /* class_sub = PCI_IDE */
7434	PCIDevSetClassBase( &pThis->dev, 0x01); /* class_base = PCI_mass_storage */
7435	PCIDevSetHeaderType(&pThis->dev, 0x00);
7436
7437	pThis->pDevIns = pDevIns;
7438	pThis->fRCEnabled = fRCEnabled;
7439	pThis->fR0Enabled = fR0Enabled;
7440	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aCts); i++)
7441	{
7442	pThis->aCts[i].pDevInsR3 = pDevIns;
7443	pThis->aCts[i].pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
7444	pThis->aCts[i].pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
7445	pThis->aCts[i].DelayIRQMillies = (uint32_t)DelayIRQMillies;
7446	for (uint32_t j = 0; j < RT_ELEMENTS(pThis->aCts[i].aIfs); j++)
7447	{
7448	ATADevState *pIf = &pThis->aCts[i].aIfs[j];
7449
7450	pIf->iLUN = i * RT_ELEMENTS(pThis->aCts) + j;
7451	pIf->pDevInsR3 = pDevIns;
7452	pIf->pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
7453	pIf->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
7454	pIf->pControllerR3 = &pThis->aCts[i];
7455	pIf->pControllerR0 = MMHyperR3ToR0(PDMDevHlpGetVM(pDevIns), &pThis->aCts[i]);
7456	pIf->pControllerRC = MMHyperR3ToRC(PDMDevHlpGetVM(pDevIns), &pThis->aCts[i]);
7457	pIf->IBase.pfnQueryInterface = ataR3QueryInterface;
7458	pIf->IMountNotify.pfnMountNotify = ataR3MountNotify;
7459	pIf->IMountNotify.pfnUnmountNotify = ataR3UnmountNotify;
7460	pIf->IPort.pfnQueryDeviceLocation = ataR3QueryDeviceLocation;
7461	pIf->Led.u32Magic = PDMLED_MAGIC;
7462	}
7463	}
7464
7465	Assert(RT_ELEMENTS(pThis->aCts) == 2);
7466	pThis->aCts[0].irq = 14;
7467	pThis->aCts[0].IOPortBase1 = 0x1f0;
7468	pThis->aCts[0].IOPortBase2 = 0x3f6;
7469	pThis->aCts[1].irq = 15;
7470	pThis->aCts[1].IOPortBase1 = 0x170;
7471	pThis->aCts[1].IOPortBase2 = 0x376;
7472
7473	/*
7474	* Set the default critical section to NOP as we lock on controller level.
7475	*/
7476	rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns));
7477	AssertRCReturn(rc, rc);
7478
7479	/*
7480	* Register the PCI device.
7481	* N.B. There's a hack in the PIIX3 PCI bridge device to assign this
7482	* device the slot next to itself.
7483	*/
7484	rc = PDMDevHlpPCIRegister(pDevIns, &pThis->dev);
7485	if (RT_FAILURE(rc))
7486	return PDMDEV_SET_ERROR(pDevIns, rc,
7487	N_("PIIX3 cannot register PCI device"));
7488	//AssertMsg(pThis->dev.devfn == 9 \|\| iInstance != 0, ("pThis->dev.devfn=%d\n", pThis->dev.devfn));
7489	rc = PDMDevHlpPCIIORegionRegister(pDevIns, 4, 0x10, PCI_ADDRESS_SPACE_IO, ataR3BMDMAIORangeMap);
7490	if (RT_FAILURE(rc))
7491	return PDMDEV_SET_ERROR(pDevIns, rc,
7492	N_("PIIX3 cannot register PCI I/O region for BMDMA"));
7493
7494	/*
7495	* Register the I/O ports.
7496	* The ports are all hardcoded and enforced by the PIIX3 host bridge controller.
7497	*/
7498	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aCts); i++)
7499	{
7500	rc = PDMDevHlpIOPortRegister(pDevIns, pThis->aCts[i].IOPortBase1, 1, (RTHCPTR)(uintptr_t)i,
7501	ataIOPortWrite1Data, ataIOPortRead1Data,
7502	ataIOPortWriteStr1Data, ataIOPortReadStr1Data, "ATA I/O Base 1 - Data");
7503	AssertLogRelRCReturn(rc, rc);
7504	rc = PDMDevHlpIOPortRegister(pDevIns, pThis->aCts[i].IOPortBase1 + 1, 7, (RTHCPTR)(uintptr_t)i,
7505	ataIOPortWrite1Other, ataIOPortRead1Other, NULL, NULL, "ATA I/O Base 1 - Other");
7506
7507	AssertLogRelRCReturn(rc, rc);
7508	if (fRCEnabled)
7509	{
7510	rc = PDMDevHlpIOPortRegisterRC(pDevIns, pThis->aCts[i].IOPortBase1, 1, (RTGCPTR)i,
7511	"ataIOPortWrite1Data", "ataIOPortRead1Data",
7512	"ataIOPortWriteStr1Data", "ataIOPortReadStr1Data", "ATA I/O Base 1 - Data");
7513	AssertLogRelRCReturn(rc, rc);
7514	rc = PDMDevHlpIOPortRegisterRC(pDevIns, pThis->aCts[i].IOPortBase1 + 1, 7, (RTGCPTR)i,
7515	"ataIOPortWrite1Other", "ataIOPortRead1Other", NULL, NULL, "ATA I/O Base 1 - Other");
7516	AssertLogRelRCReturn(rc, rc);
7517	}
7518
7519	if (fR0Enabled)
7520	{
7521	#if 0
7522	rc = PDMDevHlpIOPortRegisterR0(pDevIns, pThis->aCts[i].IOPortBase1, 1, (RTR0PTR)i,
7523	"ataIOPortWrite1Data", "ataIOPortRead1Data", NULL, NULL, "ATA I/O Base 1 - Data");
7524	#else
7525	rc = PDMDevHlpIOPortRegisterR0(pDevIns, pThis->aCts[i].IOPortBase1, 1, (RTR0PTR)i,
7526	"ataIOPortWrite1Data", "ataIOPortRead1Data",
7527	"ataIOPortWriteStr1Data", "ataIOPortReadStr1Data", "ATA I/O Base 1 - Data");
7528	#endif
7529	AssertLogRelRCReturn(rc, rc);
7530	rc = PDMDevHlpIOPortRegisterR0(pDevIns, pThis->aCts[i].IOPortBase1 + 1, 7, (RTR0PTR)i,
7531	"ataIOPortWrite1Other", "ataIOPortRead1Other", NULL, NULL, "ATA I/O Base 1 - Other");
7532	AssertLogRelRCReturn(rc, rc);
7533	}
7534
7535	rc = PDMDevHlpIOPortRegister(pDevIns, pThis->aCts[i].IOPortBase2, 1, (RTHCPTR)(uintptr_t)i,
7536	ataIOPortWrite2, ataIOPortRead2, NULL, NULL, "ATA I/O Base 2");
7537	if (RT_FAILURE(rc))
7538	return PDMDEV_SET_ERROR(pDevIns, rc, N_("PIIX3 cannot register base2 I/O handlers"));
7539
7540	if (fRCEnabled)
7541	{
7542	rc = PDMDevHlpIOPortRegisterRC(pDevIns, pThis->aCts[i].IOPortBase2, 1, (RTGCPTR)i,
7543	"ataIOPortWrite2", "ataIOPortRead2", NULL, NULL, "ATA I/O Base 2");
7544	if (RT_FAILURE(rc))
7545	return PDMDEV_SET_ERROR(pDevIns, rc, N_("PIIX3 cannot register base2 I/O handlers (GC)"));
7546	}
7547	if (fR0Enabled)
7548	{
7549	rc = PDMDevHlpIOPortRegisterR0(pDevIns, pThis->aCts[i].IOPortBase2, 1, (RTR0PTR)i,
7550	"ataIOPortWrite2", "ataIOPortRead2", NULL, NULL, "ATA I/O Base 2");
7551	if (RT_FAILURE(rc))
7552	return PDMDEV_SET_ERROR(pDevIns, rc, N_("PIIX3 cannot register base2 I/O handlers (R0)"));
7553	}
7554
7555	for (uint32_t j = 0; j < RT_ELEMENTS(pThis->aCts[i].aIfs); j++)
7556	{
7557	ATADevState *pIf = &pThis->aCts[i].aIfs[j];
7558	PDMDevHlpSTAMRegisterF(pDevIns, &pIf->StatATADMA, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES,
7559	"Number of ATA DMA transfers.", "/Devices/IDE%d/ATA%d/Unit%d/DMA", iInstance, i, j);
7560	PDMDevHlpSTAMRegisterF(pDevIns, &pIf->StatATAPIO, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES,
7561	"Number of ATA PIO transfers.", "/Devices/IDE%d/ATA%d/Unit%d/PIO", iInstance, i, j);
7562	PDMDevHlpSTAMRegisterF(pDevIns, &pIf->StatATAPIDMA, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES,
7563	"Number of ATAPI DMA transfers.", "/Devices/IDE%d/ATA%d/Unit%d/AtapiDMA", iInstance, i, j);
7564	PDMDevHlpSTAMRegisterF(pDevIns, &pIf->StatATAPIPIO, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES,
7565	"Number of ATAPI PIO transfers.", "/Devices/IDE%d/ATA%d/Unit%d/AtapiPIO", iInstance, i, j);
7566	#ifdef VBOX_WITH_STATISTICS /** @todo release too. */
7567	PDMDevHlpSTAMRegisterF(pDevIns, &pIf->StatReads, STAMTYPE_PROFILE_ADV, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL,
7568	"Profiling of the read operations.", "/Devices/IDE%d/ATA%d/Unit%d/Reads", iInstance, i, j);
7569	#endif
7570	PDMDevHlpSTAMRegisterF(pDevIns, &pIf->StatBytesRead, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES,
7571	"Amount of data read.", "/Devices/IDE%d/ATA%d/Unit%d/ReadBytes", iInstance, i, j);
7572	#ifdef VBOX_INSTRUMENT_DMA_WRITES
7573	PDMDevHlpSTAMRegisterF(pDevIns, &pIf->StatInstrVDWrites,STAMTYPE_PROFILE_ADV, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL,
7574	"Profiling of the VD DMA write operations.", "/Devices/IDE%d/ATA%d/Unit%d/InstrVDWrites", iInstance, i, j);
7575	#endif
7576	#ifdef VBOX_WITH_STATISTICS
7577	PDMDevHlpSTAMRegisterF(pDevIns, &pIf->StatWrites, STAMTYPE_PROFILE_ADV, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL,
7578	"Profiling of the write operations.", "/Devices/IDE%d/ATA%d/Unit%d/Writes", iInstance, i, j);
7579	#endif
7580	PDMDevHlpSTAMRegisterF(pDevIns, &pIf->StatBytesWritten, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES,
7581	"Amount of data written.", "/Devices/IDE%d/ATA%d/Unit%d/WrittenBytes", iInstance, i, j);
7582	#ifdef VBOX_WITH_STATISTICS
7583	PDMDevHlpSTAMRegisterF(pDevIns, &pIf->StatFlushes, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL,
7584	"Profiling of the flush operations.", "/Devices/IDE%d/ATA%d/Unit%d/Flushes", iInstance, i, j);
7585	#endif
7586	}
7587	#ifdef VBOX_WITH_STATISTICS /** @todo release too. */
7588	PDMDevHlpSTAMRegisterF(pDevIns, &pThis->aCts[i].StatAsyncOps, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES,
7589	"The number of async operations.", "/Devices/IDE%d/ATA%d/Async/Operations", iInstance, i);
7590	/** @todo STAMUNIT_MICROSECS */
7591	PDMDevHlpSTAMRegisterF(pDevIns, &pThis->aCts[i].StatAsyncMinWait, STAMTYPE_U64_RESET, STAMVISIBILITY_ALWAYS, STAMUNIT_NONE,
7592	"Minimum wait in microseconds.", "/Devices/IDE%d/ATA%d/Async/MinWait", iInstance, i);
7593	PDMDevHlpSTAMRegisterF(pDevIns, &pThis->aCts[i].StatAsyncMaxWait, STAMTYPE_U64_RESET, STAMVISIBILITY_ALWAYS, STAMUNIT_NONE,
7594	"Maximum wait in microseconds.", "/Devices/IDE%d/ATA%d/Async/MaxWait", iInstance, i);
7595	PDMDevHlpSTAMRegisterF(pDevIns, &pThis->aCts[i].StatAsyncTimeUS, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_NONE,
7596	"Total time spent in microseconds.", "/Devices/IDE%d/ATA%d/Async/TotalTimeUS", iInstance, i);
7597	PDMDevHlpSTAMRegisterF(pDevIns, &pThis->aCts[i].StatAsyncTime, STAMTYPE_PROFILE_ADV, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL,
7598	"Profiling of async operations.", "/Devices/IDE%d/ATA%d/Async/Time", iInstance, i);
7599	PDMDevHlpSTAMRegisterF(pDevIns, &pThis->aCts[i].StatLockWait, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL,
7600	"Profiling of locks.", "/Devices/IDE%d/ATA%d/Async/LockWait", iInstance, i);
7601	#endif /* VBOX_WITH_STATISTICS */
7602
7603	/* Initialize per-controller critical section. */
7604	rc = PDMDevHlpCritSectInit(pDevIns, &pThis->aCts[i].lock, RT_SRC_POS, "ATA#%u-Ctl", i);
7605	AssertLogRelRCReturn(rc, rc);
7606
7607	/* Initialize per-controller async I/O request critical section. */
7608	rc = PDMDevHlpCritSectInit(pDevIns, &pThis->aCts[i].AsyncIORequestLock, RT_SRC_POS, "ATA#%u-Req", i);
7609	AssertLogRelRCReturn(rc, rc);
7610	}
7611
7612	/*
7613	* Attach status driver (optional).
7614	*/
7615	rc = PDMDevHlpDriverAttach(pDevIns, PDM_STATUS_LUN, &pThis->IBase, &pBase, "Status Port");
7616	if (RT_SUCCESS(rc))
7617	{
7618	pThis->pLedsConnector = PDMIBASE_QUERY_INTERFACE(pBase, PDMILEDCONNECTORS);
7619	pThis->pMediaNotify = PDMIBASE_QUERY_INTERFACE(pBase, PDMIMEDIANOTIFY);
7620	}
7621	else if (rc != VERR_PDM_NO_ATTACHED_DRIVER)
7622	{
7623	AssertMsgFailed(("Failed to attach to status driver. rc=%Rrc\n", rc));
7624	return PDMDEV_SET_ERROR(pDevIns, rc, N_("PIIX3 cannot attach to status driver"));
7625	}
7626
7627	/*
7628	* Attach the units.
7629	*/
7630	uint32_t cbTotalBuffer = 0;
7631	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aCts); i++)
7632	{
7633	PATACONTROLLER pCtl = &pThis->aCts[i];
7634
7635	/*
7636	* Start the worker thread.
7637	*/
7638	pCtl->uAsyncIOState = ATA_AIO_NEW;
7639	pCtl->pSupDrvSession = PDMDevHlpGetSupDrvSession(pDevIns);
7640	rc = SUPSemEventCreate(pCtl->pSupDrvSession, &pCtl->hAsyncIOSem);
7641	AssertLogRelRCReturn(rc, rc);
7642	rc = RTSemEventCreate(&pCtl->SuspendIOSem);
7643	AssertLogRelRCReturn(rc, rc);
7644
7645	ataR3AsyncIOClearRequests(pCtl);
7646	rc = RTThreadCreateF(&pCtl->AsyncIOThread, ataR3AsyncIOThread, (void )pCtl, 1281024 /cbStack/,
7647	RTTHREADTYPE_IO, RTTHREADFLAGS_WAITABLE, "ATA-%u", i);
7648	AssertLogRelRCReturn(rc, rc);
7649	Assert( pCtl->AsyncIOThread != NIL_RTTHREAD && pCtl->hAsyncIOSem != NIL_SUPSEMEVENT
7650	&& pCtl->SuspendIOSem != NIL_RTSEMEVENT && PDMCritSectIsInitialized(&pCtl->AsyncIORequestLock));
7651	Log(("%s: controller %d AIO thread id %#x; sem %p susp_sem %p\n", __FUNCTION__, i, pCtl->AsyncIOThread, pCtl->hAsyncIOSem, pCtl->SuspendIOSem));
7652
7653	for (uint32_t j = 0; j < RT_ELEMENTS(pCtl->aIfs); j++)
7654	{
7655	static const char *s_apszDescs[RT_ELEMENTS(pThis->aCts)][RT_ELEMENTS(pCtl->aIfs)] =
7656	{
7657	{ "Primary Master", "Primary Slave" },
7658	{ "Secondary Master", "Secondary Slave" }
7659	};
7660
7661	/*
7662	* Try attach the block device and get the interfaces,
7663	* required as well as optional.
7664	*/
7665	ATADevState *pIf = &pCtl->aIfs[j];
7666
7667	rc = PDMDevHlpDriverAttach(pDevIns, pIf->iLUN, &pIf->IBase, &pIf->pDrvBase, s_apszDescs[i][j]);
7668	if (RT_SUCCESS(rc))
7669	{
7670	rc = ataR3ConfigLun(pDevIns, pIf);
7671	if (RT_SUCCESS(rc))
7672	{
7673	/*
7674	* Init vendor product data.
7675	*/
7676	static const char *s_apszCFGMKeys[RT_ELEMENTS(pThis->aCts)][RT_ELEMENTS(pCtl->aIfs)] =
7677	{
7678	{ "PrimaryMaster", "PrimarySlave" },
7679	{ "SecondaryMaster", "SecondarySlave" }
7680	};
7681
7682	/* Generate a default serial number. */
7683	char szSerial[ATA_SERIAL_NUMBER_LENGTH+1];
7684	RTUUID Uuid;
7685	if (pIf->pDrvMedia)
7686	rc = pIf->pDrvMedia->pfnGetUuid(pIf->pDrvMedia, &Uuid);
7687	else
7688	RTUuidClear(&Uuid);
7689
7690	if (RT_FAILURE(rc) \|\| RTUuidIsNull(&Uuid))
7691	{
7692	/* Generate a predictable serial for drives which don't have a UUID. */
7693	RTStrPrintf(szSerial, sizeof(szSerial), "VB%x-%04x%04x",
7694	pIf->iLUN + pDevIns->iInstance * 32,
7695	pThis->aCts[i].IOPortBase1, pThis->aCts[i].IOPortBase2);
7696	}
7697	else
7698	RTStrPrintf(szSerial, sizeof(szSerial), "VB%08x-%08x", Uuid.au32[0], Uuid.au32[3]);
7699
7700	/* Get user config if present using defaults otherwise. */
7701	PCFGMNODE pCfgNode = CFGMR3GetChild(pCfg, s_apszCFGMKeys[i][j]);
7702	rc = CFGMR3QueryStringDef(pCfgNode, "SerialNumber", pIf->szSerialNumber, sizeof(pIf->szSerialNumber),
7703	szSerial);
7704	if (RT_FAILURE(rc))
7705	{
7706	if (rc == VERR_CFGM_NOT_ENOUGH_SPACE)
7707	return PDMDEV_SET_ERROR(pDevIns, VERR_INVALID_PARAMETER,
7708	N_("PIIX3 configuration error: \"SerialNumber\" is longer than 20 bytes"));
7709	return PDMDEV_SET_ERROR(pDevIns, rc,
7710	N_("PIIX3 configuration error: failed to read \"SerialNumber\" as string"));
7711	}
7712
7713	rc = CFGMR3QueryStringDef(pCfgNode, "FirmwareRevision", pIf->szFirmwareRevision, sizeof(pIf->szFirmwareRevision),
7714	"1.0");
7715	if (RT_FAILURE(rc))
7716	{
7717	if (rc == VERR_CFGM_NOT_ENOUGH_SPACE)
7718	return PDMDEV_SET_ERROR(pDevIns, VERR_INVALID_PARAMETER,
7719	N_("PIIX3 configuration error: \"FirmwareRevision\" is longer than 8 bytes"));
7720	return PDMDEV_SET_ERROR(pDevIns, rc,
7721	N_("PIIX3 configuration error: failed to read \"FirmwareRevision\" as string"));
7722	}
7723
7724	rc = CFGMR3QueryStringDef(pCfgNode, "ModelNumber", pIf->szModelNumber, sizeof(pIf->szModelNumber),
7725	pIf->fATAPI ? "VBOX CD-ROM" : "VBOX HARDDISK");
7726	if (RT_FAILURE(rc))
7727	{
7728	if (rc == VERR_CFGM_NOT_ENOUGH_SPACE)
7729	return PDMDEV_SET_ERROR(pDevIns, VERR_INVALID_PARAMETER,
7730	N_("PIIX3 configuration error: \"ModelNumber\" is longer than 40 bytes"));
7731	return PDMDEV_SET_ERROR(pDevIns, rc,
7732	N_("PIIX3 configuration error: failed to read \"ModelNumber\" as string"));
7733	}
7734
7735	rc = CFGMR3QueryBoolDef(pCfgNode, "NonRotationalMedium", &pIf->fNonRotational, false);
7736	if (RT_FAILURE(rc))
7737	return PDMDEV_SET_ERROR(pDevIns, rc,
7738	N_("PIIX3 configuration error: failed to read \"NonRotationalMedium\" as boolean"));
7739
7740	/* There are three other identification strings for CD drives used for INQUIRY */
7741	if (pIf->fATAPI)
7742	{
7743	rc = CFGMR3QueryStringDef(pCfgNode, "ATAPIVendorId", pIf->szInquiryVendorId, sizeof(pIf->szInquiryVendorId),
7744	"VBOX");
7745	if (RT_FAILURE(rc))
7746	{
7747	if (rc == VERR_CFGM_NOT_ENOUGH_SPACE)
7748	return PDMDEV_SET_ERROR(pDevIns, VERR_INVALID_PARAMETER,
7749	N_("PIIX3 configuration error: \"ATAPIVendorId\" is longer than 16 bytes"));
7750	return PDMDEV_SET_ERROR(pDevIns, rc,
7751	N_("PIIX3 configuration error: failed to read \"ATAPIVendorId\" as string"));
7752	}
7753
7754	rc = CFGMR3QueryStringDef(pCfgNode, "ATAPIProductId", pIf->szInquiryProductId, sizeof(pIf->szInquiryProductId),
7755	"CD-ROM");
7756	if (RT_FAILURE(rc))
7757	{
7758	if (rc == VERR_CFGM_NOT_ENOUGH_SPACE)
7759	return PDMDEV_SET_ERROR(pDevIns, VERR_INVALID_PARAMETER,
7760	N_("PIIX3 configuration error: \"ATAPIProductId\" is longer than 16 bytes"));
7761	return PDMDEV_SET_ERROR(pDevIns, rc,
7762	N_("PIIX3 configuration error: failed to read \"ATAPIProductId\" as string"));
7763	}
7764
7765	rc = CFGMR3QueryStringDef(pCfgNode, "ATAPIRevision", pIf->szInquiryRevision, sizeof(pIf->szInquiryRevision),
7766	"1.0");
7767	if (RT_FAILURE(rc))
7768	{
7769	if (rc == VERR_CFGM_NOT_ENOUGH_SPACE)
7770	return PDMDEV_SET_ERROR(pDevIns, VERR_INVALID_PARAMETER,
7771	N_("PIIX3 configuration error: \"ATAPIRevision\" is longer than 4 bytes"));
7772	return PDMDEV_SET_ERROR(pDevIns, rc,
7773	N_("PIIX3 configuration error: failed to read \"ATAPIRevision\" as string"));
7774	}
7775
7776	rc = CFGMR3QueryBoolDef(pCfgNode, "OverwriteInquiry", &pIf->fOverwriteInquiry, true);
7777	if (RT_FAILURE(rc))
7778	return PDMDEV_SET_ERROR(pDevIns, rc,
7779	N_("PIIX3 configuration error: failed to read \"OverwriteInquiry\" as boolean"));
7780	}
7781	}
7782
7783	}
7784	else if (rc == VERR_PDM_NO_ATTACHED_DRIVER)
7785	{
7786	pIf->pDrvBase = NULL;
7787	pIf->pDrvMedia = NULL;
7788	pIf->cbIOBuffer = 0;
7789	pIf->pbIOBufferR3 = NULL;
7790	pIf->pbIOBufferR0 = NIL_RTR0PTR;
7791	pIf->pbIOBufferRC = NIL_RTGCPTR;
7792	LogRel(("PIIX3 ATA: LUN#%d: no unit\n", pIf->iLUN));
7793	}
7794	else
7795	{
7796	switch (rc)
7797	{
7798	case VERR_ACCESS_DENIED:
7799	/* Error already cached by DrvHostBase */
7800	return rc;
7801	default:
7802	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS,
7803	N_("PIIX3 cannot attach drive to the %s"),
7804	s_apszDescs[i][j]);
7805	}
7806	}
7807	cbTotalBuffer += pIf->cbIOBuffer;
7808	}
7809	}
7810
7811	rc = PDMDevHlpSSMRegisterEx(pDevIns, ATA_SAVED_STATE_VERSION, sizeof(*pThis) + cbTotalBuffer, NULL,
7812	NULL, ataR3LiveExec, NULL,
7813	ataR3SaveLoadPrep, ataR3SaveExec, NULL,
7814	ataR3SaveLoadPrep, ataR3LoadExec, NULL);
7815	if (RT_FAILURE(rc))
7816	return PDMDEV_SET_ERROR(pDevIns, rc, N_("PIIX3 cannot register save state handlers"));
7817
7818	/*
7819	* Initialize the device state.
7820	*/
7821	return ataR3ResetCommon(pDevIns, true /fConstruct/);
7822	}
7823
7824
7825	/**
7826	* The device registration structure.
7827	*/
7828	const PDMDEVREG g_DevicePIIX3IDE =
7829	{
7830	/* u32Version */
7831	PDM_DEVREG_VERSION,
7832	/* szName */
7833	"piix3ide",
7834	/* szRCMod */
7835	"VBoxDDRC.rc",
7836	/* szR0Mod */
7837	"VBoxDDR0.r0",
7838	/* pszDescription */
7839	"Intel PIIX3 ATA controller.\n"
7840	" LUN #0 is primary master.\n"
7841	" LUN #1 is primary slave.\n"
7842	" LUN #2 is secondary master.\n"
7843	" LUN #3 is secondary slave.\n"
7844	" LUN #999 is the LED/Status connector.",
7845	/* fFlags */
7846	PDM_DEVREG_FLAGS_DEFAULT_BITS \| PDM_DEVREG_FLAGS_RC \| PDM_DEVREG_FLAGS_R0 \|
7847	PDM_DEVREG_FLAGS_FIRST_SUSPEND_NOTIFICATION \| PDM_DEVREG_FLAGS_FIRST_POWEROFF_NOTIFICATION \|
7848	PDM_DEVREG_FLAGS_FIRST_RESET_NOTIFICATION,
7849	/* fClass */
7850	PDM_DEVREG_CLASS_STORAGE,
7851	/* cMaxInstances */
7852	1,
7853	/* cbInstance */
7854	sizeof(PCIATAState),
7855	/* pfnConstruct */
7856	ataR3Construct,
7857	/* pfnDestruct */
7858	ataR3Destruct,
7859	/* pfnRelocate */
7860	ataR3Relocate,
7861	/* pfnMemSetup */
7862	NULL,
7863	/* pfnPowerOn */
7864	NULL,
7865	/* pfnReset */
7866	ataR3Reset,
7867	/* pfnSuspend */
7868	ataR3Suspend,
7869	/* pfnResume */
7870	ataR3Resume,
7871	/* pfnAttach */
7872	ataR3Attach,
7873	/* pfnDetach */
7874	ataR3Detach,
7875	/* pfnQueryInterface. */
7876	NULL,
7877	/* pfnInitComplete */
7878	NULL,
7879	/* pfnPowerOff */
7880	ataR3PowerOff,
7881	/* pfnSoftReset */
7882	NULL,
7883	/* u32VersionEnd */
7884	PDM_DEVREG_VERSION
7885	};
7886	#endif /* IN_RING3 */
7887	#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */

Note: See TracBrowser for help on using the repository browser.

source: vbox/trunk/src/VBox/Devices/Storage/DevATA.cpp@ 60756

Download in other formats: