DevBusLogic.cpp@ 60441

Last change on this file since 60441 was 60026, checked in by vboxsync, 9 years ago
Storage/BusLogic: Process mailboxes on a dedicated worker thread to not block EMT for too long. Also fixes a problem with encrypted disks where the VM would hang during suspend when asking for the password
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 166.4 KB

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1	/* $Id: DevBusLogic.cpp 60026 2016-03-15 10:12:36Z vboxsync $ */
2	/** @file
3	* VBox storage devices - BusLogic SCSI host adapter BT-958.
4	*
5	* Based on the Multi-Master Ultra SCSI Systems Technical Reference Manual.
6	*/
7
8	/*
9	* Copyright (C) 2006-2015 Oracle Corporation
10	*
11	* This file is part of VirtualBox Open Source Edition (OSE), as
12	* available from http://www.virtualbox.org. This file is free software;
13	* you can redistribute it and/or modify it under the terms of the GNU
14	* General Public License (GPL) as published by the Free Software
15	* Foundation, in version 2 as it comes in the "COPYING" file of the
16	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
17	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
18	*/
19
20
21	/*********************************************************************************************************************************
22	* Header Files *
23	*********************************************************************************************************************************/
24	#define LOG_GROUP LOG_GROUP_DEV_BUSLOGIC
25	#include <VBox/vmm/pdmdev.h>
26	#include <VBox/vmm/pdmstorageifs.h>
27	#include <VBox/vmm/pdmcritsect.h>
28	#include <VBox/scsi.h>
29	#include <iprt/asm.h>
30	#include <iprt/assert.h>
31	#include <iprt/string.h>
32	#include <iprt/log.h>
33	#ifdef IN_RING3
34	# include <iprt/alloc.h>
35	# include <iprt/memcache.h>
36	# include <iprt/param.h>
37	# include <iprt/uuid.h>
38	#endif
39
40	#include "VBoxSCSI.h"
41	#include "VBoxDD.h"
42
43
44	/*********************************************************************************************************************************
45	* Defined Constants And Macros *
46	*********************************************************************************************************************************/
47	/** Maximum number of attached devices the adapter can handle. */
48	#define BUSLOGIC_MAX_DEVICES 16
49
50	/** Maximum number of scatter gather elements this device can handle. */
51	#define BUSLOGIC_MAX_SCATTER_GATHER_LIST_SIZE 128
52
53	/** Size of the command buffer. */
54	#define BUSLOGIC_COMMAND_SIZE_MAX 53
55
56	/** Size of the reply buffer. */
57	#define BUSLOGIC_REPLY_SIZE_MAX 64
58
59	/** Custom fixed I/O ports for BIOS controller access.
60	* Note that these should not be in the ISA range (below 400h) to avoid
61	* conflicts with ISA device probing. Addresses in the 300h-340h range should be
62	* especially avoided.
63	*/
64	#define BUSLOGIC_BIOS_IO_PORT 0x430
65
66	/** State saved version. */
67	#define BUSLOGIC_SAVED_STATE_MINOR_VERSION 4
68
69	/** Saved state version before the suspend on error feature was implemented. */
70	#define BUSLOGIC_SAVED_STATE_MINOR_PRE_ERROR_HANDLING 1
71	/** Saved state version before 24-bit mailbox support was implemented. */
72	#define BUSLOGIC_SAVED_STATE_MINOR_PRE_24BIT_MBOX 2
73	/** Saved state version before command buffer size was raised. */
74	#define BUSLOGIC_SAVED_STATE_MINOR_PRE_CMDBUF_RESIZE 3
75
76	/** Command buffer size in old saved states. */
77	#define BUSLOGIC_COMMAND_SIZE_OLD 5
78
79	/** The duration of software-initiated reset (in nano seconds).
80	* Not documented, set to 50 ms. */
81	#define BUSLOGIC_RESET_DURATION_NS UINT64_C(50000000)
82
83
84	/*********************************************************************************************************************************
85	* Structures and Typedefs *
86	*********************************************************************************************************************************/
87	/**
88	* State of a device attached to the buslogic host adapter.
89	*
90	* @implements PDMIBASE
91	* @implements PDMISCSIPORT
92	* @implements PDMILEDPORTS
93	*/
94	typedef struct BUSLOGICDEVICE
95	{
96	/** Pointer to the owning buslogic device instance. - R3 pointer */
97	R3PTRTYPE(struct BUSLOGIC *) pBusLogicR3;
98	/** Pointer to the owning buslogic device instance. - R0 pointer */
99	R0PTRTYPE(struct BUSLOGIC *) pBusLogicR0;
100	/** Pointer to the owning buslogic device instance. - RC pointer */
101	RCPTRTYPE(struct BUSLOGIC *) pBusLogicRC;
102
103	/** Flag whether device is present. */
104	bool fPresent;
105	/** LUN of the device. */
106	RTUINT iLUN;
107
108	#if HC_ARCH_BITS == 64
109	uint32_t Alignment0;
110	#endif
111
112	/** Our base interface. */
113	PDMIBASE IBase;
114	/** SCSI port interface. */
115	PDMISCSIPORT ISCSIPort;
116	/** Led interface. */
117	PDMILEDPORTS ILed;
118	/** Pointer to the attached driver's base interface. */
119	R3PTRTYPE(PPDMIBASE) pDrvBase;
120	/** Pointer to the underlying SCSI connector interface. */
121	R3PTRTYPE(PPDMISCSICONNECTOR) pDrvSCSIConnector;
122	/** The status LED state for this device. */
123	PDMLED Led;
124
125	#if HC_ARCH_BITS == 64
126	uint32_t Alignment1;
127	#endif
128
129	/** Number of outstanding tasks on the port. */
130	volatile uint32_t cOutstandingRequests;
131
132	} BUSLOGICDEVICE, *PBUSLOGICDEVICE;
133
134	/**
135	* Commands the BusLogic adapter supports.
136	*/
137	enum BUSLOGICCOMMAND
138	{
139	BUSLOGICCOMMAND_TEST_CMDC_INTERRUPT = 0x00,
140	BUSLOGICCOMMAND_INITIALIZE_MAILBOX = 0x01,
141	BUSLOGICCOMMAND_EXECUTE_MAILBOX_COMMAND = 0x02,
142	BUSLOGICCOMMAND_EXECUTE_BIOS_COMMAND = 0x03,
143	BUSLOGICCOMMAND_INQUIRE_BOARD_ID = 0x04,
144	BUSLOGICCOMMAND_ENABLE_OUTGOING_MAILBOX_AVAILABLE_INTERRUPT = 0x05,
145	BUSLOGICCOMMAND_SET_SCSI_SELECTION_TIMEOUT = 0x06,
146	BUSLOGICCOMMAND_SET_PREEMPT_TIME_ON_BUS = 0x07,
147	BUSLOGICCOMMAND_SET_TIME_OFF_BUS = 0x08,
148	BUSLOGICCOMMAND_SET_BUS_TRANSFER_RATE = 0x09,
149	BUSLOGICCOMMAND_INQUIRE_INSTALLED_DEVICES_ID_0_TO_7 = 0x0a,
150	BUSLOGICCOMMAND_INQUIRE_CONFIGURATION = 0x0b,
151	BUSLOGICCOMMAND_ENABLE_TARGET_MODE = 0x0c,
152	BUSLOGICCOMMAND_INQUIRE_SETUP_INFORMATION = 0x0d,
153	BUSLOGICCOMMAND_WRITE_ADAPTER_LOCAL_RAM = 0x1a,
154	BUSLOGICCOMMAND_READ_ADAPTER_LOCAL_RAM = 0x1b,
155	BUSLOGICCOMMAND_WRITE_BUSMASTER_CHIP_FIFO = 0x1c,
156	BUSLOGICCOMMAND_READ_BUSMASTER_CHIP_FIFO = 0x1d,
157	BUSLOGICCOMMAND_ECHO_COMMAND_DATA = 0x1f,
158	BUSLOGICCOMMAND_HOST_ADAPTER_DIAGNOSTIC = 0x20,
159	BUSLOGICCOMMAND_SET_ADAPTER_OPTIONS = 0x21,
160	BUSLOGICCOMMAND_INQUIRE_INSTALLED_DEVICES_ID_8_TO_15 = 0x23,
161	BUSLOGICCOMMAND_INQUIRE_TARGET_DEVICES = 0x24,
162	BUSLOGICCOMMAND_DISABLE_HOST_ADAPTER_INTERRUPT = 0x25,
163	BUSLOGICCOMMAND_EXT_BIOS_INFO = 0x28,
164	BUSLOGICCOMMAND_UNLOCK_MAILBOX = 0x29,
165	BUSLOGICCOMMAND_INITIALIZE_EXTENDED_MAILBOX = 0x81,
166	BUSLOGICCOMMAND_EXECUTE_SCSI_COMMAND = 0x83,
167	BUSLOGICCOMMAND_INQUIRE_FIRMWARE_VERSION_3RD_LETTER = 0x84,
168	BUSLOGICCOMMAND_INQUIRE_FIRMWARE_VERSION_LETTER = 0x85,
169	BUSLOGICCOMMAND_INQUIRE_PCI_HOST_ADAPTER_INFORMATION = 0x86,
170	BUSLOGICCOMMAND_INQUIRE_HOST_ADAPTER_MODEL_NUMBER = 0x8b,
171	BUSLOGICCOMMAND_INQUIRE_SYNCHRONOUS_PERIOD = 0x8c,
172	BUSLOGICCOMMAND_INQUIRE_EXTENDED_SETUP_INFORMATION = 0x8d,
173	BUSLOGICCOMMAND_ENABLE_STRICT_ROUND_ROBIN_MODE = 0x8f,
174	BUSLOGICCOMMAND_STORE_HOST_ADAPTER_LOCAL_RAM = 0x90,
175	BUSLOGICCOMMAND_FETCH_HOST_ADAPTER_LOCAL_RAM = 0x91,
176	BUSLOGICCOMMAND_STORE_LOCAL_DATA_IN_EEPROM = 0x92,
177	BUSLOGICCOMMAND_UPLOAD_AUTO_SCSI_CODE = 0x94,
178	BUSLOGICCOMMAND_MODIFY_IO_ADDRESS = 0x95,
179	BUSLOGICCOMMAND_SET_CCB_FORMAT = 0x96,
180	BUSLOGICCOMMAND_WRITE_INQUIRY_BUFFER = 0x9a,
181	BUSLOGICCOMMAND_READ_INQUIRY_BUFFER = 0x9b,
182	BUSLOGICCOMMAND_FLASH_ROM_UPLOAD_DOWNLOAD = 0xa7,
183	BUSLOGICCOMMAND_READ_SCAM_DATA = 0xa8,
184	BUSLOGICCOMMAND_WRITE_SCAM_DATA = 0xa9
185	} BUSLOGICCOMMAND;
186
187	#pragma pack(1)
188	/**
189	* Auto SCSI structure which is located
190	* in host adapter RAM and contains several
191	* configuration parameters.
192	*/
193	typedef struct AutoSCSIRam
194	{
195	uint8_t aInternalSignature[2];
196	uint8_t cbInformation;
197	uint8_t aHostAdaptertype[6];
198	uint8_t uReserved1;
199	bool fFloppyEnabled : 1;
200	bool fFloppySecondary : 1;
201	bool fLevelSensitiveInterrupt : 1;
202	unsigned char uReserved2 : 2;
203	unsigned char uSystemRAMAreForBIOS : 3;
204	unsigned char uDMAChannel : 7;
205	bool fDMAAutoConfiguration : 1;
206	unsigned char uIrqChannel : 7;
207	bool fIrqAutoConfiguration : 1;
208	uint8_t uDMATransferRate;
209	uint8_t uSCSIId;
210	bool fLowByteTerminated : 1;
211	bool fParityCheckingEnabled : 1;
212	bool fHighByteTerminated : 1;
213	bool fNoisyCablingEnvironment : 1;
214	bool fFastSynchronousNeogtiation : 1;
215	bool fBusResetEnabled : 1;
216	bool fReserved3 : 1;
217	bool fActiveNegotiationEnabled : 1;
218	uint8_t uBusOnDelay;
219	uint8_t uBusOffDelay;
220	bool fHostAdapterBIOSEnabled : 1;
221	bool fBIOSRedirectionOfInt19 : 1;
222	bool fExtendedTranslation : 1;
223	bool fMapRemovableAsFixed : 1;
224	bool fReserved4 : 1;
225	bool fBIOSSupportsMoreThan2Drives : 1;
226	bool fBIOSInterruptMode : 1;
227	bool fFlopticalSupport : 1;
228	uint16_t u16DeviceEnabledMask;
229	uint16_t u16WidePermittedMask;
230	uint16_t u16FastPermittedMask;
231	uint16_t u16SynchronousPermittedMask;
232	uint16_t u16DisconnectPermittedMask;
233	uint16_t u16SendStartUnitCommandMask;
234	uint16_t u16IgnoreInBIOSScanMask;
235	unsigned char uPCIInterruptPin : 2;
236	unsigned char uHostAdapterIoPortAddress : 2;
237	bool fStrictRoundRobinMode : 1;
238	bool fVesaBusSpeedGreaterThan33MHz : 1;
239	bool fVesaBurstWrite : 1;
240	bool fVesaBurstRead : 1;
241	uint16_t u16UltraPermittedMask;
242	uint32_t uReserved5;
243	uint8_t uReserved6;
244	uint8_t uAutoSCSIMaximumLUN;
245	bool fReserved7 : 1;
246	bool fSCAMDominant : 1;
247	bool fSCAMenabled : 1;
248	bool fSCAMLevel2 : 1;
249	unsigned char uReserved8 : 4;
250	bool fInt13Extension : 1;
251	bool fReserved9 : 1;
252	bool fCDROMBoot : 1;
253	unsigned char uReserved10 : 5;
254	unsigned char uBootTargetId : 4;
255	unsigned char uBootChannel : 4;
256	bool fForceBusDeviceScanningOrder : 1;
257	unsigned char uReserved11 : 7;
258	uint16_t u16NonTaggedToAlternateLunPermittedMask;
259	uint16_t u16RenegotiateSyncAfterCheckConditionMask;
260	uint8_t aReserved12[10];
261	uint8_t aManufacturingDiagnostic[2];
262	uint16_t u16Checksum;
263	} AutoSCSIRam, *PAutoSCSIRam;
264	AssertCompileSize(AutoSCSIRam, 64);
265	#pragma pack()
266
267	/**
268	* The local Ram.
269	*/
270	typedef union HostAdapterLocalRam
271	{
272	/** Byte view. */
273	uint8_t u8View[256];
274	/** Structured view. */
275	struct
276	{
277	/** Offset 0 - 63 is for BIOS. */
278	uint8_t u8Bios[64];
279	/** Auto SCSI structure. */
280	AutoSCSIRam autoSCSIData;
281	} structured;
282	} HostAdapterLocalRam, *PHostAdapterLocalRam;
283	AssertCompileSize(HostAdapterLocalRam, 256);
284
285
286	/** Ugly 24-bit big-endian addressing. */
287	typedef struct
288	{
289	uint8_t hi;
290	uint8_t mid;
291	uint8_t lo;
292	} Addr24, Len24;
293	AssertCompileSize(Addr24, 3);
294
295	#define ADDR_TO_U32(x) (((x).hi << 16) \| ((x).mid << 8) \| (x).lo)
296	#define LEN_TO_U32 ADDR_TO_U32
297	#define U32_TO_ADDR(a, x) do {(a).hi = (x) >> 16; (a).mid = (x) >> 8; (a).lo = (x);} while(0)
298	#define U32_TO_LEN U32_TO_ADDR
299
300	/** @name Compatible ISA base I/O port addresses. Disabled if zero.
301	* @{ */
302	#define NUM_ISA_BASES 8
303	#define MAX_ISA_BASE (NUM_ISA_BASES - 1)
304	#define ISA_BASE_DISABLED 6
305
306	static uint16_t const g_aISABases[NUM_ISA_BASES] =
307	{
308	0x330, 0x334, 0x230, 0x234, 0x130, 0x134, 0, 0
309	};
310	/** @} */
311
312	/** Pointer to a task state structure. */
313	typedef struct BUSLOGICTASKSTATE *PBUSLOGICTASKSTATE;
314
315	/**
316	* Main BusLogic device state.
317	*
318	* @extends PCIDEVICE
319	* @implements PDMILEDPORTS
320	*/
321	typedef struct BUSLOGIC
322	{
323	/** The PCI device structure. */
324	PCIDEVICE dev;
325	/** Pointer to the device instance - HC ptr */
326	PPDMDEVINSR3 pDevInsR3;
327	/** Pointer to the device instance - R0 ptr */
328	PPDMDEVINSR0 pDevInsR0;
329	/** Pointer to the device instance - RC ptr. */
330	PPDMDEVINSRC pDevInsRC;
331
332	/** Whether R0 is enabled. */
333	bool fR0Enabled;
334	/** Whether RC is enabled. */
335	bool fGCEnabled;
336
337	/** Base address of the I/O ports. */
338	RTIOPORT IOPortBase;
339	/** Base address of the memory mapping. */
340	RTGCPHYS MMIOBase;
341	/** Status register - Readonly. */
342	volatile uint8_t regStatus;
343	/** Interrupt register - Readonly. */
344	volatile uint8_t regInterrupt;
345	/** Geometry register - Readonly. */
346	volatile uint8_t regGeometry;
347	/** Pending (delayed) interrupt. */
348	uint8_t uPendingIntr;
349
350	/** Local RAM for the fetch hostadapter local RAM request.
351	* I don't know how big the buffer really is but the maximum
352	* seems to be 256 bytes because the offset and count field in the command request
353	* are only one byte big.
354	*/
355	HostAdapterLocalRam LocalRam;
356
357	/** Command code the guest issued. */
358	uint8_t uOperationCode;
359	/** Buffer for the command parameters the adapter is currently receiving from the guest.
360	* Size of the largest command which is possible.
361	*/
362	uint8_t aCommandBuffer[BUSLOGIC_COMMAND_SIZE_MAX]; /* Size of the biggest request. */
363	/** Current position in the command buffer. */
364	uint8_t iParameter;
365	/** Parameters left until the command is complete. */
366	uint8_t cbCommandParametersLeft;
367
368	/** Whether we are using the RAM or reply buffer. */
369	bool fUseLocalRam;
370	/** Buffer to store reply data from the controller to the guest. */
371	uint8_t aReplyBuffer[BUSLOGIC_REPLY_SIZE_MAX]; /* Size of the biggest reply. */
372	/** Position in the buffer we are reading next. */
373	uint8_t iReply;
374	/** Bytes left until the reply buffer is empty. */
375	uint8_t cbReplyParametersLeft;
376
377	/** Flag whether IRQs are enabled. */
378	bool fIRQEnabled;
379	/** Flag whether the ISA I/O port range is disabled
380	* to prevent the BIOS to access the device. */
381	bool fISAEnabled; /*< @todo unused, to be removed /
382	/** Flag whether 24-bit mailboxes are in use (default is 32-bit). */
383	bool fMbxIs24Bit;
384	/** ISA I/O port base (encoded in FW-compatible format). */
385	uint8_t uISABaseCode;
386
387	/** ISA I/O port base (disabled if zero). */
388	RTIOPORT IOISABase;
389	/** Default ISA I/O port base in FW-compatible format. */
390	uint8_t uDefaultISABaseCode;
391
392	/** Number of mailboxes the guest set up. */
393	uint32_t cMailbox;
394
395	#if HC_ARCH_BITS == 64
396	uint32_t Alignment0;
397	#endif
398
399	/** Time when HBA reset was last initiated. / /< @todo does this need to be saved? /
400	uint64_t u64ResetTime;
401	/** Physical base address of the outgoing mailboxes. */
402	RTGCPHYS GCPhysAddrMailboxOutgoingBase;
403	/** Current outgoing mailbox position. */
404	uint32_t uMailboxOutgoingPositionCurrent;
405	/** Number of mailboxes ready. */
406	volatile uint32_t cMailboxesReady;
407	/** Whether a notification to R3 was sent. */
408	volatile bool fNotificationSent;
409
410	#if HC_ARCH_BITS == 64
411	uint32_t Alignment1;
412	#endif
413
414	/** Physical base address of the incoming mailboxes. */
415	RTGCPHYS GCPhysAddrMailboxIncomingBase;
416	/** Current incoming mailbox position. */
417	uint32_t uMailboxIncomingPositionCurrent;
418
419	/** Whether strict round robin is enabled. */
420	bool fStrictRoundRobinMode;
421	/** Whether the extended LUN CCB format is enabled for 32 possible logical units. */
422	bool fExtendedLunCCBFormat;
423
424	/** Queue to send tasks to R3. - HC ptr */
425	R3PTRTYPE(PPDMQUEUE) pNotifierQueueR3;
426	/** Queue to send tasks to R3. - HC ptr */
427	R0PTRTYPE(PPDMQUEUE) pNotifierQueueR0;
428	/** Queue to send tasks to R3. - RC ptr */
429	RCPTRTYPE(PPDMQUEUE) pNotifierQueueRC;
430
431	uint32_t Alignment2;
432
433	/** Critical section protecting access to the interrupt status register. */
434	PDMCRITSECT CritSectIntr;
435
436	/** Cache for task states. */
437	R3PTRTYPE(RTMEMCACHE) hTaskCache;
438
439	/** Device state for BIOS access. */
440	VBOXSCSI VBoxSCSI;
441
442	/** BusLogic device states. */
443	BUSLOGICDEVICE aDeviceStates[BUSLOGIC_MAX_DEVICES];
444
445	/** The base interface.
446	* @todo use PDMDEVINS::IBase */
447	PDMIBASE IBase;
448	/** Status Port - Leds interface. */
449	PDMILEDPORTS ILeds;
450	/** Partner of ILeds. */
451	R3PTRTYPE(PPDMILEDCONNECTORS) pLedsConnector;
452
453	#if HC_ARCH_BITS == 64
454	uint32_t Alignment3;
455	#endif
456
457	/** Indicates that PDMDevHlpAsyncNotificationCompleted should be called when
458	* a port is entering the idle state. */
459	bool volatile fSignalIdle;
460	/** Flag whether we have tasks which need to be processed again. */
461	bool volatile fRedo;
462	/** Flag whether the worker thread is sleeping. */
463	volatile bool fWrkThreadSleeping;
464	/** Flag whether a request from the BIOS is pending which the
465	* worker thread needs to process. */
466	volatile bool fBiosReqPending;
467	/** List of tasks which can be redone. */
468	R3PTRTYPE(volatile PBUSLOGICTASKSTATE) pTasksRedoHead;
469
470	/** The support driver session handle. */
471	R3R0PTRTYPE(PSUPDRVSESSION) pSupDrvSession;
472	/** Worker thread. */
473	R3PTRTYPE(PPDMTHREAD) pThreadWrk;
474	/** The event semaphore the processing thread waits on. */
475	SUPSEMEVENT hEvtProcess;
476
477	#ifdef LOG_ENABLED
478	# if HC_ARCH_BITS == 64
479	uint32_t Alignment4;
480	# endif
481
482	volatile uint32_t cInMailboxesReady;
483	#endif
484
485	} BUSLOGIC, *PBUSLOGIC;
486
487	/** Register offsets in the I/O port space. */
488	#define BUSLOGIC_REGISTER_CONTROL 0 /*< Writeonly /
489	/** Fields for the control register. */
490	# define BL_CTRL_RSBUS RT_BIT(4) /* Reset SCSI Bus. */
491	# define BL_CTRL_RINT RT_BIT(5) /* Reset Interrupt. */
492	# define BL_CTRL_RSOFT RT_BIT(6) /* Soft Reset. */
493	# define BL_CTRL_RHARD RT_BIT(7) /* Hard Reset. */
494
495	#define BUSLOGIC_REGISTER_STATUS 0 /*< Readonly /
496	/** Fields for the status register. */
497	# define BL_STAT_CMDINV RT_BIT(0) /* Command Invalid. */
498	# define BL_STAT_DIRRDY RT_BIT(2) /* Data In Register Ready. */
499	# define BL_STAT_CPRBSY RT_BIT(3) /* Command/Parameter Out Register Busy. */
500	# define BL_STAT_HARDY RT_BIT(4) /* Host Adapter Ready. */
501	# define BL_STAT_INREQ RT_BIT(5) /* Initialization Required. */
502	# define BL_STAT_DFAIL RT_BIT(6) /* Diagnostic Failure. */
503	# define BL_STAT_DACT RT_BIT(7) /* Diagnistic Active. */
504
505	#define BUSLOGIC_REGISTER_COMMAND 1 /*< Writeonly /
506	#define BUSLOGIC_REGISTER_DATAIN 1 /*< Readonly /
507	#define BUSLOGIC_REGISTER_INTERRUPT 2 /*< Readonly /
508	/** Fields for the interrupt register. */
509	# define BL_INTR_IMBL RT_BIT(0) /* Incoming Mailbox Loaded. */
510	# define BL_INTR_OMBR RT_BIT(1) /* Outgoing Mailbox Available. */
511	# define BL_INTR_CMDC RT_BIT(2) /* Command Complete. */
512	# define BL_INTR_RSTS RT_BIT(3) /* SCSO Bus Reset State. */
513	# define BL_INTR_INTV RT_BIT(7) /* Interrupt Valid. */
514
515	#define BUSLOGIC_REGISTER_GEOMETRY 3 /* Readonly */
516	# define BL_GEOM_XLATEN RT_BIT(7) /* Extended geometry translation enabled. */
517
518	/** Structure for the INQUIRE_PCI_HOST_ADAPTER_INFORMATION reply. */
519	typedef struct ReplyInquirePCIHostAdapterInformation
520	{
521	uint8_t IsaIOPort;
522	uint8_t IRQ;
523	unsigned char LowByteTerminated : 1;
524	unsigned char HighByteTerminated : 1;
525	unsigned char uReserved : 2; /* Reserved. */
526	unsigned char JP1 : 1; /* Whatever that means. */
527	unsigned char JP2 : 1; /* Whatever that means. */
528	unsigned char JP3 : 1; /* Whatever that means. */
529	/** Whether the provided info is valid. */
530	unsigned char InformationIsValid: 1;
531	uint8_t uReserved2; /* Reserved. */
532	} ReplyInquirePCIHostAdapterInformation, *PReplyInquirePCIHostAdapterInformation;
533	AssertCompileSize(ReplyInquirePCIHostAdapterInformation, 4);
534
535	/** Structure for the INQUIRE_CONFIGURATION reply. */
536	typedef struct ReplyInquireConfiguration
537	{
538	unsigned char uReserved1 : 5;
539	bool fDmaChannel5 : 1;
540	bool fDmaChannel6 : 1;
541	bool fDmaChannel7 : 1;
542	bool fIrqChannel9 : 1;
543	bool fIrqChannel10 : 1;
544	bool fIrqChannel11 : 1;
545	bool fIrqChannel12 : 1;
546	unsigned char uReserved2 : 1;
547	bool fIrqChannel14 : 1;
548	bool fIrqChannel15 : 1;
549	unsigned char uReserved3 : 1;
550	unsigned char uHostAdapterId : 4;
551	unsigned char uReserved4 : 4;
552	} ReplyInquireConfiguration, *PReplyInquireConfiguration;
553	AssertCompileSize(ReplyInquireConfiguration, 3);
554
555	/** Structure for the INQUIRE_SETUP_INFORMATION reply. */
556	typedef struct ReplyInquireSetupInformationSynchronousValue
557	{
558	unsigned char uOffset : 4;
559	unsigned char uTransferPeriod : 3;
560	bool fSynchronous : 1;
561	}ReplyInquireSetupInformationSynchronousValue, *PReplyInquireSetupInformationSynchronousValue;
562	AssertCompileSize(ReplyInquireSetupInformationSynchronousValue, 1);
563
564	typedef struct ReplyInquireSetupInformation
565	{
566	bool fSynchronousInitiationEnabled : 1;
567	bool fParityCheckingEnabled : 1;
568	unsigned char uReserved1 : 6;
569	uint8_t uBusTransferRate;
570	uint8_t uPreemptTimeOnBus;
571	uint8_t uTimeOffBus;
572	uint8_t cMailbox;
573	Addr24 MailboxAddress;
574	ReplyInquireSetupInformationSynchronousValue SynchronousValuesId0To7[8];
575	uint8_t uDisconnectPermittedId0To7;
576	uint8_t uSignature;
577	uint8_t uCharacterD;
578	uint8_t uHostBusType;
579	uint8_t uWideTransferPermittedId0To7;
580	uint8_t uWideTransfersActiveId0To7;
581	ReplyInquireSetupInformationSynchronousValue SynchronousValuesId8To15[8];
582	uint8_t uDisconnectPermittedId8To15;
583	uint8_t uReserved2;
584	uint8_t uWideTransferPermittedId8To15;
585	uint8_t uWideTransfersActiveId8To15;
586	} ReplyInquireSetupInformation, *PReplyInquireSetupInformation;
587	AssertCompileSize(ReplyInquireSetupInformation, 34);
588
589	/** Structure for the INQUIRE_EXTENDED_SETUP_INFORMATION. */
590	#pragma pack(1)
591	typedef struct ReplyInquireExtendedSetupInformation
592	{
593	uint8_t uBusType;
594	uint8_t uBiosAddress;
595	uint16_t u16ScatterGatherLimit;
596	uint8_t cMailbox;
597	uint32_t uMailboxAddressBase;
598	unsigned char uReserved1 : 2;
599	bool fFastEISA : 1;
600	unsigned char uReserved2 : 3;
601	bool fLevelSensitiveInterrupt : 1;
602	unsigned char uReserved3 : 1;
603	unsigned char aFirmwareRevision[3];
604	bool fHostWideSCSI : 1;
605	bool fHostDifferentialSCSI : 1;
606	bool fHostSupportsSCAM : 1;
607	bool fHostUltraSCSI : 1;
608	bool fHostSmartTermination : 1;
609	unsigned char uReserved4 : 3;
610	} ReplyInquireExtendedSetupInformation, *PReplyInquireExtendedSetupInformation;
611	AssertCompileSize(ReplyInquireExtendedSetupInformation, 14);
612	#pragma pack()
613
614	/** Structure for the INITIALIZE EXTENDED MAILBOX request. */
615	#pragma pack(1)
616	typedef struct RequestInitializeExtendedMailbox
617	{
618	/** Number of mailboxes in guest memory. */
619	uint8_t cMailbox;
620	/** Physical address of the first mailbox. */
621	uint32_t uMailboxBaseAddress;
622	} RequestInitializeExtendedMailbox, *PRequestInitializeExtendedMailbox;
623	AssertCompileSize(RequestInitializeExtendedMailbox, 5);
624	#pragma pack()
625
626	/** Structure for the INITIALIZE MAILBOX request. */
627	typedef struct
628	{
629	/** Number of mailboxes to set up. */
630	uint8_t cMailbox;
631	/** Physical address of the first mailbox. */
632	Addr24 aMailboxBaseAddr;
633	} RequestInitMbx, *PRequestInitMbx;
634	AssertCompileSize(RequestInitMbx, 4);
635
636	/**
637	* Structure of a mailbox in guest memory.
638	* The incoming and outgoing mailbox have the same size
639	* but the incoming one has some more fields defined which
640	* are marked as reserved in the outgoing one.
641	* The last field is also different from the type.
642	* For outgoing mailboxes it is the action and
643	* for incoming ones the completion status code for the task.
644	* We use one structure for both types.
645	*/
646	typedef struct Mailbox32
647	{
648	/** Physical address of the CCB structure in the guest memory. */
649	uint32_t u32PhysAddrCCB;
650	/** Type specific data. */
651	union
652	{
653	/** For outgoing mailboxes. */
654	struct
655	{
656	/** Reserved */
657	uint8_t uReserved[3];
658	/** Action code. */
659	uint8_t uActionCode;
660	} out;
661	/** For incoming mailboxes. */
662	struct
663	{
664	/** The host adapter status after finishing the request. */
665	uint8_t uHostAdapterStatus;
666	/** The status of the device which executed the request after executing it. */
667	uint8_t uTargetDeviceStatus;
668	/** Reserved. */
669	uint8_t uReserved;
670	/** The completion status code of the request. */
671	uint8_t uCompletionCode;
672	} in;
673	} u;
674	} Mailbox32, *PMailbox32;
675	AssertCompileSize(Mailbox32, 8);
676
677	/** Old style 24-bit mailbox entry. */
678	typedef struct Mailbox24
679	{
680	/** Mailbox command (incoming) or state (outgoing). */
681	uint8_t uCmdState;
682	/** Physical address of the CCB structure in the guest memory. */
683	Addr24 aPhysAddrCCB;
684	} Mailbox24, *PMailbox24;
685	AssertCompileSize(Mailbox24, 4);
686
687	/**
688	* Action codes for outgoing mailboxes.
689	*/
690	enum BUSLOGIC_MAILBOX_OUTGOING_ACTION
691	{
692	BUSLOGIC_MAILBOX_OUTGOING_ACTION_FREE = 0x00,
693	BUSLOGIC_MAILBOX_OUTGOING_ACTION_START_COMMAND = 0x01,
694	BUSLOGIC_MAILBOX_OUTGOING_ACTION_ABORT_COMMAND = 0x02
695	};
696
697	/**
698	* Completion codes for incoming mailboxes.
699	*/
700	enum BUSLOGIC_MAILBOX_INCOMING_COMPLETION
701	{
702	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_FREE = 0x00,
703	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_WITHOUT_ERROR = 0x01,
704	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_ABORTED = 0x02,
705	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_ABORTED_NOT_FOUND = 0x03,
706	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_WITH_ERROR = 0x04,
707	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_INVALID_CCB = 0x05
708	};
709
710	/**
711	* Host adapter status for incoming mailboxes.
712	*/
713	enum BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS
714	{
715	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_CMD_COMPLETED = 0x00,
716	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_LINKED_CMD_COMPLETED = 0x0a,
717	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_LINKED_CMD_COMPLETED_WITH_FLAG = 0x0b,
718	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_DATA_UNDERUN = 0x0c,
719	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_SCSI_SELECTION_TIMEOUT = 0x11,
720	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_DATA_OVERRUN = 0x12,
721	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_UNEXPECTED_BUS_FREE = 0x13,
722	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_INVALID_BUS_PHASE_REQUESTED = 0x14,
723	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_INVALID_OUTGOING_MAILBOX_ACTION_CODE = 0x15,
724	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_INVALID_COMMAND_OPERATION_CODE = 0x16,
725	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_LINKED_CCB_HAS_INVALID_LUN = 0x17,
726	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_INVALID_COMMAND_PARAMETER = 0x1a,
727	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_AUTO_REQUEST_SENSE_FAILED = 0x1b,
728	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_TAGGED_QUEUING_MESSAGE_REJECTED = 0x1c,
729	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_UNSUPPORTED_MESSAGE_RECEIVED = 0x1d,
730	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_HOST_ADAPTER_HARDWARE_FAILED = 0x20,
731	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_TARGET_FAILED_RESPONSE_TO_ATN = 0x21,
732	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_HOST_ADAPTER_ASSERTED_RST = 0x22,
733	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_OTHER_DEVICE_ASSERTED_RST = 0x23,
734	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_TARGET_DEVICE_RECONNECTED_IMPROPERLY = 0x24,
735	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_HOST_ADAPTER_ASSERTED_BUS_DEVICE_RESET = 0x25,
736	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_ABORT_QUEUE_GENERATED = 0x26,
737	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_HOST_ADAPTER_SOFTWARE_ERROR = 0x27,
738	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_HOST_ADAPTER_HARDWARE_TIMEOUT_ERROR = 0x30,
739	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_SCSI_PARITY_ERROR_DETECTED = 0x34
740	};
741
742	/**
743	* Device status codes for incoming mailboxes.
744	*/
745	enum BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS
746	{
747	BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS_OPERATION_GOOD = 0x00,
748	BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS_CHECK_CONDITION = 0x02,
749	BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS_DEVICE_BUSY = 0x08
750	};
751
752	/**
753	* Opcode types for CCB.
754	*/
755	enum BUSLOGIC_CCB_OPCODE
756	{
757	BUSLOGIC_CCB_OPCODE_INITIATOR_CCB = 0x00,
758	BUSLOGIC_CCB_OPCODE_TARGET_CCB = 0x01,
759	BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_SCATTER_GATHER = 0x02,
760	BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_RESIDUAL_DATA_LENGTH = 0x03,
761	BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_RESIDUAL_SCATTER_GATHER = 0x04,
762	BUSLOGIC_CCB_OPCODE_BUS_DEVICE_RESET = 0x81
763	};
764
765	/**
766	* Data transfer direction.
767	*/
768	enum BUSLOGIC_CCB_DIRECTION
769	{
770	BUSLOGIC_CCB_DIRECTION_UNKNOWN = 0x00,
771	BUSLOGIC_CCB_DIRECTION_IN = 0x01,
772	BUSLOGIC_CCB_DIRECTION_OUT = 0x02,
773	BUSLOGIC_CCB_DIRECTION_NO_DATA = 0x03
774	};
775
776	/**
777	* The command control block for a SCSI request.
778	*/
779	typedef struct CCB32
780	{
781	/** Opcode. */
782	uint8_t uOpcode;
783	/** Reserved */
784	unsigned char uReserved1 : 3;
785	/** Data direction for the request. */
786	unsigned char uDataDirection : 2;
787	/** Whether the request is tag queued. */
788	bool fTagQueued : 1;
789	/** Queue tag mode. */
790	unsigned char uQueueTag : 2;
791	/** Length of the SCSI CDB. */
792	uint8_t cbCDB;
793	/** Sense data length. */
794	uint8_t cbSenseData;
795	/** Data length. */
796	uint32_t cbData;
797	/** Data pointer.
798	* This points to the data region or a scatter gather list based on the opcode.
799	*/
800	uint32_t u32PhysAddrData;
801	/** Reserved. */
802	uint8_t uReserved2[2];
803	/** Host adapter status. */
804	uint8_t uHostAdapterStatus;
805	/** Device adapter status. */
806	uint8_t uDeviceStatus;
807	/** The device the request is sent to. */
808	uint8_t uTargetId;
809	/*The LUN in the device. /
810	unsigned char uLogicalUnit : 5;
811	/** Legacy tag. */
812	bool fLegacyTagEnable : 1;
813	/** Legacy queue tag. */
814	unsigned char uLegacyQueueTag : 2;
815	/** The SCSI CDB. (A CDB can be 12 bytes long.) */
816	uint8_t abCDB[12];
817	/** Reserved. */
818	uint8_t uReserved3[6];
819	/** Sense data pointer. */
820	uint32_t u32PhysAddrSenseData;
821	} CCB32, *PCCB32;
822	AssertCompileSize(CCB32, 40);
823
824
825	/**
826	* The 24-bit command control block.
827	*/
828	typedef struct CCB24
829	{
830	/** Opcode. */
831	uint8_t uOpcode;
832	/** The LUN in the device. */
833	unsigned char uLogicalUnit : 3;
834	/** Data direction for the request. */
835	unsigned char uDataDirection : 2;
836	/** The target device ID. */
837	unsigned char uTargetId : 3;
838	/** Length of the SCSI CDB. */
839	uint8_t cbCDB;
840	/** Sense data length. */
841	uint8_t cbSenseData;
842	/** Data length. */
843	Len24 acbData;
844	/** Data pointer.
845	* This points to the data region or a scatter gather list based on the opc
846	*/
847	Addr24 aPhysAddrData;
848	/** Pointer to next CCB for linked commands. */
849	Addr24 aPhysAddrLink;
850	/** Command linking identifier. */
851	uint8_t uLinkId;
852	/** Host adapter status. */
853	uint8_t uHostAdapterStatus;
854	/** Device adapter status. */
855	uint8_t uDeviceStatus;
856	/** Two unused bytes. */
857	uint8_t aReserved[2];
858	/** The SCSI CDB. (A CDB can be 12 bytes long.) */
859	uint8_t abCDB[12];
860	} CCB24, *PCCB24;
861	AssertCompileSize(CCB24, 30);
862
863	/**
864	* The common 24-bit/32-bit command control block. The 32-bit CCB is laid out
865	* such that many fields are in the same location as in the older 24-bit CCB.
866	*/
867	typedef struct CCBC
868	{
869	/** Opcode. */
870	uint8_t uOpcode;
871	/** The LUN in the device. */
872	unsigned char uPad1 : 3;
873	/** Data direction for the request. */
874	unsigned char uDataDirection : 2;
875	/** The target device ID. */
876	unsigned char uPad2 : 3;
877	/** Length of the SCSI CDB. */
878	uint8_t cbCDB;
879	/** Sense data length. */
880	uint8_t cbSenseData;
881	uint8_t aPad1[10];
882	/** Host adapter status. */
883	uint8_t uHostAdapterStatus;
884	/** Device adapter status. */
885	uint8_t uDeviceStatus;
886	uint8_t aPad2[2];
887	/** The SCSI CDB (up to 12 bytes). */
888	uint8_t abCDB[12];
889	} CCBC, *PCCBC;
890	AssertCompileSize(CCBC, 30);
891
892	/* Make sure that the 24-bit/32-bit/common CCB offsets match. */
893	AssertCompileMemberOffset(CCBC, cbCDB, 2);
894	AssertCompileMemberOffset(CCB24, cbCDB, 2);
895	AssertCompileMemberOffset(CCB32, cbCDB, 2);
896	AssertCompileMemberOffset(CCBC, uHostAdapterStatus, 14);
897	AssertCompileMemberOffset(CCB24, uHostAdapterStatus, 14);
898	AssertCompileMemberOffset(CCB32, uHostAdapterStatus, 14);
899	AssertCompileMemberOffset(CCBC, abCDB, 18);
900	AssertCompileMemberOffset(CCB24, abCDB, 18);
901	AssertCompileMemberOffset(CCB32, abCDB, 18);
902
903	/** A union of all CCB types (24-bit/32-bit/common). */
904	typedef union CCBU
905	{
906	CCB32 n; /*< New 32-bit CCB. /
907	CCB24 o; /*< Old 24-bit CCB. /
908	CCBC c; /*< Common CCB subset. /
909	} CCBU, *PCCBU;
910
911	/** 32-bit scatter-gather list entry. */
912	typedef struct SGE32
913	{
914	uint32_t cbSegment;
915	uint32_t u32PhysAddrSegmentBase;
916	} SGE32, *PSGE32;
917	AssertCompileSize(SGE32, 8);
918
919	/** 24-bit scatter-gather list entry. */
920	typedef struct SGE24
921	{
922	Len24 acbSegment;
923	Addr24 aPhysAddrSegmentBase;
924	} SGE24, *PSGE24;
925	AssertCompileSize(SGE24, 6);
926
927	/**
928	* The structure for the "Execute SCSI Command" command.
929	*/
930	typedef struct ESCMD
931	{
932	/** Data length. */
933	uint32_t cbData;
934	/** Data pointer. */
935	uint32_t u32PhysAddrData;
936	/** The device the request is sent to. */
937	uint8_t uTargetId;
938	/** The LUN in the device. */
939	uint8_t uLogicalUnit;
940	/** Reserved */
941	unsigned char uReserved1 : 3;
942	/** Data direction for the request. */
943	unsigned char uDataDirection : 2;
944	/** Reserved */
945	unsigned char uReserved2 : 3;
946	/** Length of the SCSI CDB. */
947	uint8_t cbCDB;
948	/** The SCSI CDB. (A CDB can be 12 bytes long.) */
949	uint8_t abCDB[12];
950	} ESCMD, *PESCMD;
951	AssertCompileSize(ESCMD, 24);
952
953	/**
954	* Task state for a CCB request.
955	*/
956	typedef struct BUSLOGICTASKSTATE
957	{
958	/** Next in the redo list. */
959	PBUSLOGICTASKSTATE pRedoNext;
960	/** Device this task is assigned to. */
961	R3PTRTYPE(PBUSLOGICDEVICE) pTargetDeviceR3;
962	/** The command control block from the guest. */
963	CCBU CommandControlBlockGuest;
964	/** Mailbox read from guest memory. */
965	Mailbox32 MailboxGuest;
966	/** The SCSI request we pass to the underlying SCSI engine. */
967	PDMSCSIREQUEST PDMScsiRequest;
968	/** Data buffer segment */
969	RTSGSEG DataSeg;
970	/** Pointer to the R3 sense buffer. */
971	uint8_t *pbSenseBuffer;
972	/** Flag whether this is a request from the BIOS. */
973	bool fBIOS;
974	/** 24-bit request flag (default is 32-bit). */
975	bool fIs24Bit;
976	/** S/G entry size (depends on the above flag). */
977	uint8_t cbSGEntry;
978	} BUSLOGICTASKSTATE;
979
980	#ifndef VBOX_DEVICE_STRUCT_TESTCASE
981
982	#define PDMIBASE_2_PBUSLOGICDEVICE(pInterface) ( (PBUSLOGICDEVICE)((uintptr_t)(pInterface) - RT_OFFSETOF(BUSLOGICDEVICE, IBase)) )
983	#define PDMISCSIPORT_2_PBUSLOGICDEVICE(pInterface) ( (PBUSLOGICDEVICE)((uintptr_t)(pInterface) - RT_OFFSETOF(BUSLOGICDEVICE, ISCSIPort)) )
984	#define PDMILEDPORTS_2_PBUSLOGICDEVICE(pInterface) ( (PBUSLOGICDEVICE)((uintptr_t)(pInterface) - RT_OFFSETOF(BUSLOGICDEVICE, ILed)) )
985	#define PDMIBASE_2_PBUSLOGIC(pInterface) ( (PBUSLOGIC)((uintptr_t)(pInterface) - RT_OFFSETOF(BUSLOGIC, IBase)) )
986	#define PDMILEDPORTS_2_PBUSLOGIC(pInterface) ( (PBUSLOGIC)((uintptr_t)(pInterface) - RT_OFFSETOF(BUSLOGIC, ILeds)) )
987
988
989	/*********************************************************************************************************************************
990	* Internal Functions *
991	*********************************************************************************************************************************/
992	static int buslogicR3RegisterISARange(PBUSLOGIC pBusLogic, uint8_t uBaseCode);
993
994
995	/**
996	* Assert IRQ line of the BusLogic adapter.
997	*
998	* @returns nothing.
999	* @param pBusLogic Pointer to the BusLogic device instance.
1000	* @param fSuppressIrq Flag to suppress IRQ generation regardless of fIRQEnabled
1001	* @param uFlag Type of interrupt being generated.
1002	*/
1003	static void buslogicSetInterrupt(PBUSLOGIC pBusLogic, bool fSuppressIrq, uint8_t uIrqType)
1004	{
1005	LogFlowFunc(("pBusLogic=%#p\n", pBusLogic));
1006
1007	/* The CMDC interrupt has priority over IMBL and OMBR. */
1008	if (uIrqType & (BL_INTR_IMBL \| BL_INTR_OMBR))
1009	{
1010	if (!(pBusLogic->regInterrupt & BL_INTR_CMDC))
1011	pBusLogic->regInterrupt \|= uIrqType; /* Report now. */
1012	else
1013	pBusLogic->uPendingIntr \|= uIrqType; /* Report later. */
1014	}
1015	else if (uIrqType & BL_INTR_CMDC)
1016	{
1017	AssertMsg(pBusLogic->regInterrupt == 0 \|\| pBusLogic->regInterrupt == (BL_INTR_INTV \| BL_INTR_CMDC),
1018	("regInterrupt=%02X\n", pBusLogic->regInterrupt));
1019	pBusLogic->regInterrupt \|= uIrqType;
1020	}
1021	else
1022	AssertMsgFailed(("Invalid interrupt state!\n"));
1023
1024	pBusLogic->regInterrupt \|= BL_INTR_INTV;
1025	if (pBusLogic->fIRQEnabled && !fSuppressIrq)
1026	PDMDevHlpPCISetIrq(pBusLogic->CTX_SUFF(pDevIns), 0, 1);
1027	}
1028
1029	/**
1030	* Deasserts the interrupt line of the BusLogic adapter.
1031	*
1032	* @returns nothing
1033	* @param pBuslogic Pointer to the BusLogic device instance.
1034	*/
1035	static void buslogicClearInterrupt(PBUSLOGIC pBusLogic)
1036	{
1037	LogFlowFunc(("pBusLogic=%#p, clearing %#02x (pending %#02x)\n",
1038	pBusLogic, pBusLogic->regInterrupt, pBusLogic->uPendingIntr));
1039	pBusLogic->regInterrupt = 0;
1040	PDMDevHlpPCISetIrq(pBusLogic->CTX_SUFF(pDevIns), 0, 0);
1041	/* If there's another pending interrupt, report it now. */
1042	if (pBusLogic->uPendingIntr)
1043	{
1044	buslogicSetInterrupt(pBusLogic, false, pBusLogic->uPendingIntr);
1045	pBusLogic->uPendingIntr = 0;
1046	}
1047	}
1048
1049	#if defined(IN_RING3)
1050
1051	/**
1052	* Advances the mailbox pointer to the next slot.
1053	*/
1054	DECLINLINE(void) buslogicR3OutgoingMailboxAdvance(PBUSLOGIC pBusLogic)
1055	{
1056	pBusLogic->uMailboxOutgoingPositionCurrent = (pBusLogic->uMailboxOutgoingPositionCurrent + 1) % pBusLogic->cMailbox;
1057	}
1058
1059	/**
1060	* Initialize local RAM of host adapter with default values.
1061	*
1062	* @returns nothing.
1063	* @param pBusLogic.
1064	*/
1065	static void buslogicR3InitializeLocalRam(PBUSLOGIC pBusLogic)
1066	{
1067	/*
1068	* These values are mostly from what I think is right
1069	* looking at the dmesg output from a Linux guest inside
1070	* a VMware server VM.
1071	*
1072	* So they don't have to be right :)
1073	*/
1074	memset(pBusLogic->LocalRam.u8View, 0, sizeof(HostAdapterLocalRam));
1075	pBusLogic->LocalRam.structured.autoSCSIData.fLevelSensitiveInterrupt = true;
1076	pBusLogic->LocalRam.structured.autoSCSIData.fParityCheckingEnabled = true;
1077	pBusLogic->LocalRam.structured.autoSCSIData.fExtendedTranslation = true; /* Same as in geometry register. */
1078	pBusLogic->LocalRam.structured.autoSCSIData.u16DeviceEnabledMask = ~0; /* All enabled. Maybe mask out non present devices? */
1079	pBusLogic->LocalRam.structured.autoSCSIData.u16WidePermittedMask = ~0;
1080	pBusLogic->LocalRam.structured.autoSCSIData.u16FastPermittedMask = ~0;
1081	pBusLogic->LocalRam.structured.autoSCSIData.u16SynchronousPermittedMask = ~0;
1082	pBusLogic->LocalRam.structured.autoSCSIData.u16DisconnectPermittedMask = ~0;
1083	pBusLogic->LocalRam.structured.autoSCSIData.fStrictRoundRobinMode = pBusLogic->fStrictRoundRobinMode;
1084	pBusLogic->LocalRam.structured.autoSCSIData.u16UltraPermittedMask = ~0;
1085	/** @todo calculate checksum? */
1086	}
1087
1088	/**
1089	* Do a hardware reset of the buslogic adapter.
1090	*
1091	* @returns VBox status code.
1092	* @param pBusLogic Pointer to the BusLogic device instance.
1093	* @param fResetIO Flag determining whether ISA I/O should be reset.
1094	*/
1095	static int buslogicR3HwReset(PBUSLOGIC pBusLogic, bool fResetIO)
1096	{
1097	LogFlowFunc(("pBusLogic=%#p\n", pBusLogic));
1098
1099	/* Reset registers to default values. */
1100	pBusLogic->regStatus = BL_STAT_HARDY \| BL_STAT_INREQ;
1101	pBusLogic->regGeometry = BL_GEOM_XLATEN;
1102	pBusLogic->uOperationCode = 0xff; /* No command executing. */
1103	pBusLogic->iParameter = 0;
1104	pBusLogic->cbCommandParametersLeft = 0;
1105	pBusLogic->fIRQEnabled = true;
1106	pBusLogic->fStrictRoundRobinMode = false;
1107	pBusLogic->fExtendedLunCCBFormat = false;
1108	pBusLogic->uMailboxOutgoingPositionCurrent = 0;
1109	pBusLogic->uMailboxIncomingPositionCurrent = 0;
1110
1111	/* Clear any active/pending interrupts. */
1112	pBusLogic->uPendingIntr = 0;
1113	buslogicClearInterrupt(pBusLogic);
1114
1115	/* Guest-initiated HBA reset does not affect ISA port I/O. */
1116	if (fResetIO)
1117	{
1118	buslogicR3RegisterISARange(pBusLogic, pBusLogic->uDefaultISABaseCode);
1119	}
1120	buslogicR3InitializeLocalRam(pBusLogic);
1121	vboxscsiInitialize(&pBusLogic->VBoxSCSI);
1122
1123	return VINF_SUCCESS;
1124	}
1125
1126	#endif /* IN_RING3 */
1127
1128	/**
1129	* Resets the command state machine for the next command and notifies the guest.
1130	*
1131	* @returns nothing.
1132	* @param pBusLogic Pointer to the BusLogic device instance
1133	* @param fSuppressIrq Flag to suppress IRQ generation regardless of current state
1134	*/
1135	static void buslogicCommandComplete(PBUSLOGIC pBusLogic, bool fSuppressIrq)
1136	{
1137	LogFlowFunc(("pBusLogic=%#p\n", pBusLogic));
1138
1139	pBusLogic->fUseLocalRam = false;
1140	pBusLogic->regStatus \|= BL_STAT_HARDY;
1141	pBusLogic->iReply = 0;
1142
1143	/* Modify I/O address does not generate an interrupt. */
1144	if (pBusLogic->uOperationCode != BUSLOGICCOMMAND_EXECUTE_MAILBOX_COMMAND)
1145	{
1146	/* Notify that the command is complete. */
1147	pBusLogic->regStatus &= ~BL_STAT_DIRRDY;
1148	buslogicSetInterrupt(pBusLogic, fSuppressIrq, BL_INTR_CMDC);
1149	}
1150
1151	pBusLogic->uOperationCode = 0xff;
1152	pBusLogic->iParameter = 0;
1153	}
1154
1155	#if defined(IN_RING3)
1156
1157	/**
1158	* Initiates a hard reset which was issued from the guest.
1159	*
1160	* @returns nothing
1161	* @param pBusLogic Pointer to the BusLogic device instance.
1162	* @param fHardReset Flag initiating a hard (vs. soft) reset.
1163	*/
1164	static void buslogicR3InitiateReset(PBUSLOGIC pBusLogic, bool fHardReset)
1165	{
1166	LogFlowFunc(("pBusLogic=%#p fHardReset=%d\n", pBusLogic, fHardReset));
1167
1168	buslogicR3HwReset(pBusLogic, false);
1169
1170	if (fHardReset)
1171	{
1172	/* Set the diagnostic active bit in the status register and clear the ready state. */
1173	pBusLogic->regStatus \|= BL_STAT_DACT;
1174	pBusLogic->regStatus &= ~BL_STAT_HARDY;
1175
1176	/* Remember when the guest initiated a reset (after we're done resetting). */
1177	pBusLogic->u64ResetTime = PDMDevHlpTMTimeVirtGetNano(pBusLogic->CTX_SUFF(pDevIns));
1178	}
1179	}
1180
1181	/**
1182	* Send a mailbox with set status codes to the guest.
1183	*
1184	* @returns nothing.
1185	* @param pBusLogic Pointer to the BusLogic device instance.
1186	* @param pTaskState Pointer to the task state with the mailbox to send.
1187	* @param uHostAdapterStatus The host adapter status code to set.
1188	* @param uDeviceStatus The target device status to set.
1189	* @param uMailboxCompletionCode Completion status code to set in the mailbox.
1190	*/
1191	static void buslogicR3SendIncomingMailbox(PBUSLOGIC pBusLogic, PBUSLOGICTASKSTATE pTaskState,
1192	uint8_t uHostAdapterStatus, uint8_t uDeviceStatus,
1193	uint8_t uMailboxCompletionCode)
1194	{
1195	pTaskState->MailboxGuest.u.in.uHostAdapterStatus = uHostAdapterStatus;
1196	pTaskState->MailboxGuest.u.in.uTargetDeviceStatus = uDeviceStatus;
1197	pTaskState->MailboxGuest.u.in.uCompletionCode = uMailboxCompletionCode;
1198
1199	int rc = PDMCritSectEnter(&pBusLogic->CritSectIntr, VINF_SUCCESS);
1200	AssertRC(rc);
1201
1202	RTGCPHYS GCPhysAddrMailboxIncoming = pBusLogic->GCPhysAddrMailboxIncomingBase
1203	+ ( pBusLogic->uMailboxIncomingPositionCurrent
1204	* (pTaskState->fIs24Bit ? sizeof(Mailbox24) : sizeof(Mailbox32)) );
1205
1206	if (uMailboxCompletionCode != BUSLOGIC_MAILBOX_INCOMING_COMPLETION_ABORTED_NOT_FOUND)
1207	{
1208	RTGCPHYS GCPhysAddrCCB = pTaskState->MailboxGuest.u32PhysAddrCCB;
1209	LogFlowFunc(("Completing CCB %RGp hstat=%u, dstat=%u, outgoing mailbox at %RGp\n", GCPhysAddrCCB,
1210	uHostAdapterStatus, uDeviceStatus, GCPhysAddrMailboxIncoming));
1211
1212	/* Update CCB. */
1213	pTaskState->CommandControlBlockGuest.c.uHostAdapterStatus = uHostAdapterStatus;
1214	pTaskState->CommandControlBlockGuest.c.uDeviceStatus = uDeviceStatus;
1215	/* Rewrite CCB up to the CDB; perhaps more than necessary. */
1216	PDMDevHlpPCIPhysWrite(pBusLogic->CTX_SUFF(pDevIns), GCPhysAddrCCB,
1217	&pTaskState->CommandControlBlockGuest, RT_OFFSETOF(CCBC, abCDB));
1218	}
1219
1220	# ifdef RT_STRICT
1221	uint8_t uCode;
1222	unsigned uCodeOffs = pTaskState->fIs24Bit ? RT_OFFSETOF(Mailbox24, uCmdState) : RT_OFFSETOF(Mailbox32, u.out.uActionCode);
1223	PDMDevHlpPhysRead(pBusLogic->CTX_SUFF(pDevIns), GCPhysAddrMailboxIncoming + uCodeOffs, &uCode, sizeof(uCode));
1224	Assert(uCode == BUSLOGIC_MAILBOX_INCOMING_COMPLETION_FREE);
1225	# endif
1226
1227	/* Update mailbox. */
1228	if (pTaskState->fIs24Bit)
1229	{
1230	Mailbox24 Mbx24;
1231
1232	Mbx24.uCmdState = pTaskState->MailboxGuest.u.in.uCompletionCode;
1233	U32_TO_ADDR(Mbx24.aPhysAddrCCB, pTaskState->MailboxGuest.u32PhysAddrCCB);
1234	Log(("24-bit mailbox: completion code=%u, CCB at %RGp\n", Mbx24.uCmdState, (RTGCPHYS)ADDR_TO_U32(Mbx24.aPhysAddrCCB)));
1235	PDMDevHlpPCIPhysWrite(pBusLogic->CTX_SUFF(pDevIns), GCPhysAddrMailboxIncoming, &Mbx24, sizeof(Mailbox24));
1236	}
1237	else
1238	{
1239	Log(("32-bit mailbox: completion code=%u, CCB at %RGp\n", pTaskState->MailboxGuest.u.in.uCompletionCode, (RTGCPHYS)pTaskState->MailboxGuest.u32PhysAddrCCB));
1240	PDMDevHlpPCIPhysWrite(pBusLogic->CTX_SUFF(pDevIns), GCPhysAddrMailboxIncoming,
1241	&pTaskState->MailboxGuest, sizeof(Mailbox32));
1242	}
1243
1244	/* Advance to next mailbox position. */
1245	pBusLogic->uMailboxIncomingPositionCurrent++;
1246	if (pBusLogic->uMailboxIncomingPositionCurrent >= pBusLogic->cMailbox)
1247	pBusLogic->uMailboxIncomingPositionCurrent = 0;
1248
1249	# ifdef LOG_ENABLED
1250	ASMAtomicIncU32(&pBusLogic->cInMailboxesReady);
1251	# endif
1252
1253	buslogicSetInterrupt(pBusLogic, false, BL_INTR_IMBL);
1254
1255	PDMCritSectLeave(&pBusLogic->CritSectIntr);
1256	}
1257
1258	# ifdef LOG_ENABLED
1259
1260	/**
1261	* Dumps the content of a mailbox for debugging purposes.
1262	*
1263	* @return nothing
1264	* @param pMailbox The mailbox to dump.
1265	* @param fOutgoing true if dumping the outgoing state.
1266	* false if dumping the incoming state.
1267	*/
1268	static void buslogicR3DumpMailboxInfo(PMailbox32 pMailbox, bool fOutgoing)
1269	{
1270	Log(("%s: Dump for %s mailbox:\n", __FUNCTION__, fOutgoing ? "outgoing" : "incoming"));
1271	Log(("%s: u32PhysAddrCCB=%#x\n", __FUNCTION__, pMailbox->u32PhysAddrCCB));
1272	if (fOutgoing)
1273	{
1274	Log(("%s: uActionCode=%u\n", __FUNCTION__, pMailbox->u.out.uActionCode));
1275	}
1276	else
1277	{
1278	Log(("%s: uHostAdapterStatus=%u\n", __FUNCTION__, pMailbox->u.in.uHostAdapterStatus));
1279	Log(("%s: uTargetDeviceStatus=%u\n", __FUNCTION__, pMailbox->u.in.uTargetDeviceStatus));
1280	Log(("%s: uCompletionCode=%u\n", __FUNCTION__, pMailbox->u.in.uCompletionCode));
1281	}
1282	}
1283
1284	/**
1285	* Dumps the content of a command control block for debugging purposes.
1286	*
1287	* @returns nothing.
1288	* @param pCCB Pointer to the command control block to dump.
1289	* @param fIs24BitCCB Flag to determine CCB format.
1290	*/
1291	static void buslogicR3DumpCCBInfo(PCCBU pCCB, bool fIs24BitCCB)
1292	{
1293	Log(("%s: Dump for %s Command Control Block:\n", __FUNCTION__, fIs24BitCCB ? "24-bit" : "32-bit"));
1294	Log(("%s: uOpCode=%#x\n", __FUNCTION__, pCCB->c.uOpcode));
1295	Log(("%s: uDataDirection=%u\n", __FUNCTION__, pCCB->c.uDataDirection));
1296	Log(("%s: cbCDB=%u\n", __FUNCTION__, pCCB->c.cbCDB));
1297	Log(("%s: cbSenseData=%u\n", __FUNCTION__, pCCB->c.cbSenseData));
1298	Log(("%s: uHostAdapterStatus=%u\n", __FUNCTION__, pCCB->c.uHostAdapterStatus));
1299	Log(("%s: uDeviceStatus=%u\n", __FUNCTION__, pCCB->c.uDeviceStatus));
1300	if (fIs24BitCCB)
1301	{
1302	Log(("%s: cbData=%u\n", __FUNCTION__, LEN_TO_U32(pCCB->o.acbData)));
1303	Log(("%s: PhysAddrData=%#x\n", __FUNCTION__, ADDR_TO_U32(pCCB->o.aPhysAddrData)));
1304	Log(("%s: uTargetId=%u\n", __FUNCTION__, pCCB->o.uTargetId));
1305	Log(("%s: uLogicalUnit=%u\n", __FUNCTION__, pCCB->o.uLogicalUnit));
1306	}
1307	else
1308	{
1309	Log(("%s: cbData=%u\n", __FUNCTION__, pCCB->n.cbData));
1310	Log(("%s: PhysAddrData=%#x\n", __FUNCTION__, pCCB->n.u32PhysAddrData));
1311	Log(("%s: uTargetId=%u\n", __FUNCTION__, pCCB->n.uTargetId));
1312	Log(("%s: uLogicalUnit=%u\n", __FUNCTION__, pCCB->n.uLogicalUnit));
1313	Log(("%s: fTagQueued=%d\n", __FUNCTION__, pCCB->n.fTagQueued));
1314	Log(("%s: uQueueTag=%u\n", __FUNCTION__, pCCB->n.uQueueTag));
1315	Log(("%s: fLegacyTagEnable=%u\n", __FUNCTION__, pCCB->n.fLegacyTagEnable));
1316	Log(("%s: uLegacyQueueTag=%u\n", __FUNCTION__, pCCB->n.uLegacyQueueTag));
1317	Log(("%s: PhysAddrSenseData=%#x\n", __FUNCTION__, pCCB->n.u32PhysAddrSenseData));
1318	}
1319	Log(("%s: uCDB[0]=%#x\n", __FUNCTION__, pCCB->c.abCDB[0]));
1320	for (int i = 1; i < pCCB->c.cbCDB; i++)
1321	Log(("%s: uCDB[%d]=%u\n", __FUNCTION__, i, pCCB->c.abCDB[i]));
1322	}
1323
1324	# endif /* LOG_ENABLED */
1325
1326	/**
1327	* Allocate data buffer.
1328	*
1329	* @param pTaskState Pointer to the task state.
1330	* @param GCSGList Guest physical address of S/G list.
1331	* @param cEntries Number of list entries to read.
1332	* @param pSGEList Pointer to 32-bit S/G list storage.
1333	*/
1334	static void buslogicR3ReadSGEntries(PBUSLOGICTASKSTATE pTaskState, RTGCPHYS GCSGList, uint32_t cEntries, SGE32 *pSGEList)
1335	{
1336	PPDMDEVINS pDevIns = pTaskState->CTX_SUFF(pTargetDevice)->CTX_SUFF(pBusLogic)->CTX_SUFF(pDevIns);
1337	SGE24 aSGE24[32];
1338	Assert(cEntries <= RT_ELEMENTS(aSGE24));
1339
1340	/* Read the S/G entries. Convert 24-bit entries to 32-bit format. */
1341	if (pTaskState->fIs24Bit)
1342	{
1343	Log2(("Converting %u 24-bit S/G entries to 32-bit\n", cEntries));
1344	PDMDevHlpPhysRead(pDevIns, GCSGList, &aSGE24, cEntries * sizeof(SGE24));
1345	for (uint32_t i = 0; i < cEntries; ++i)
1346	{
1347	pSGEList[i].cbSegment = LEN_TO_U32(aSGE24[i].acbSegment);
1348	pSGEList[i].u32PhysAddrSegmentBase = ADDR_TO_U32(aSGE24[i].aPhysAddrSegmentBase);
1349	}
1350	}
1351	else
1352	PDMDevHlpPhysRead(pDevIns, GCSGList, pSGEList, cEntries * sizeof(SGE32));
1353	}
1354
1355	/**
1356	* Allocate data buffer.
1357	*
1358	* @returns VBox status code.
1359	* @param pTaskState Pointer to the task state.
1360	*/
1361	static int buslogicR3DataBufferAlloc(PBUSLOGICTASKSTATE pTaskState)
1362	{
1363	PPDMDEVINS pDevIns = pTaskState->CTX_SUFF(pTargetDevice)->CTX_SUFF(pBusLogic)->CTX_SUFF(pDevIns);
1364	uint32_t cbDataCCB;
1365	uint32_t u32PhysAddrCCB;
1366
1367	/* Extract the data length and physical address from the CCB. */
1368	if (pTaskState->fIs24Bit)
1369	{
1370	u32PhysAddrCCB = ADDR_TO_U32(pTaskState->CommandControlBlockGuest.o.aPhysAddrData);
1371	cbDataCCB = LEN_TO_U32(pTaskState->CommandControlBlockGuest.o.acbData);
1372	}
1373	else
1374	{
1375	u32PhysAddrCCB = pTaskState->CommandControlBlockGuest.n.u32PhysAddrData;
1376	cbDataCCB = pTaskState->CommandControlBlockGuest.n.cbData;
1377	}
1378
1379	if ( (pTaskState->CommandControlBlockGuest.c.uDataDirection != BUSLOGIC_CCB_DIRECTION_NO_DATA)
1380	&& cbDataCCB)
1381	{
1382	/** @todo Check following assumption and what residual means. */
1383	/*
1384	* The BusLogic adapter can handle two different data buffer formats.
1385	* The first one is that the data pointer entry in the CCB points to
1386	* the buffer directly. In second mode the data pointer points to a
1387	* scatter gather list which describes the buffer.
1388	*/
1389	if ( (pTaskState->CommandControlBlockGuest.c.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_SCATTER_GATHER)
1390	\|\| (pTaskState->CommandControlBlockGuest.c.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_RESIDUAL_SCATTER_GATHER))
1391	{
1392	uint32_t cScatterGatherGCRead;
1393	uint32_t iScatterGatherEntry;
1394	SGE32 aScatterGatherReadGC[32]; /* A buffer for scatter gather list entries read from guest memory. */
1395	uint32_t cScatterGatherGCLeft = cbDataCCB / pTaskState->cbSGEntry;
1396	RTGCPHYS GCPhysAddrScatterGatherCurrent = u32PhysAddrCCB;
1397	size_t cbDataToTransfer = 0;
1398
1399	/* Count number of bytes to transfer. */
1400	do
1401	{
1402	cScatterGatherGCRead = (cScatterGatherGCLeft < RT_ELEMENTS(aScatterGatherReadGC))
1403	? cScatterGatherGCLeft
1404	: RT_ELEMENTS(aScatterGatherReadGC);
1405	cScatterGatherGCLeft -= cScatterGatherGCRead;
1406
1407	buslogicR3ReadSGEntries(pTaskState, GCPhysAddrScatterGatherCurrent, cScatterGatherGCRead, aScatterGatherReadGC);
1408
1409	for (iScatterGatherEntry = 0; iScatterGatherEntry < cScatterGatherGCRead; iScatterGatherEntry++)
1410	{
1411	RTGCPHYS GCPhysAddrDataBase;
1412
1413	Log(("%s: iScatterGatherEntry=%u\n", __FUNCTION__, iScatterGatherEntry));
1414
1415	GCPhysAddrDataBase = (RTGCPHYS)aScatterGatherReadGC[iScatterGatherEntry].u32PhysAddrSegmentBase;
1416	cbDataToTransfer += aScatterGatherReadGC[iScatterGatherEntry].cbSegment;
1417
1418	Log(("%s: GCPhysAddrDataBase=%RGp cbDataToTransfer=%u\n",
1419	__FUNCTION__, GCPhysAddrDataBase,
1420	aScatterGatherReadGC[iScatterGatherEntry].cbSegment));
1421	}
1422
1423	/* Set address to the next entries to read. */
1424	GCPhysAddrScatterGatherCurrent += cScatterGatherGCRead * pTaskState->cbSGEntry;
1425	} while (cScatterGatherGCLeft > 0);
1426
1427	Log(("%s: cbDataToTransfer=%d\n", __FUNCTION__, cbDataToTransfer));
1428
1429	/* Allocate buffer */
1430	pTaskState->DataSeg.cbSeg = cbDataToTransfer;
1431	pTaskState->DataSeg.pvSeg = RTMemAlloc(pTaskState->DataSeg.cbSeg);
1432	if (!pTaskState->DataSeg.pvSeg)
1433	return VERR_NO_MEMORY;
1434
1435	/* Copy the data if needed */
1436	if ( (pTaskState->CommandControlBlockGuest.c.uDataDirection == BUSLOGIC_CCB_DIRECTION_OUT)
1437	\|\| (pTaskState->CommandControlBlockGuest.c.uDataDirection == BUSLOGIC_CCB_DIRECTION_UNKNOWN))
1438	{
1439	cScatterGatherGCLeft = cbDataCCB / pTaskState->cbSGEntry;
1440	GCPhysAddrScatterGatherCurrent = u32PhysAddrCCB;
1441	uint8_t pbData = (uint8_t )pTaskState->DataSeg.pvSeg;
1442
1443	do
1444	{
1445	cScatterGatherGCRead = (cScatterGatherGCLeft < RT_ELEMENTS(aScatterGatherReadGC))
1446	? cScatterGatherGCLeft
1447	: RT_ELEMENTS(aScatterGatherReadGC);
1448	cScatterGatherGCLeft -= cScatterGatherGCRead;
1449
1450	buslogicR3ReadSGEntries(pTaskState, GCPhysAddrScatterGatherCurrent, cScatterGatherGCRead, aScatterGatherReadGC);
1451
1452	for (iScatterGatherEntry = 0; iScatterGatherEntry < cScatterGatherGCRead; iScatterGatherEntry++)
1453	{
1454	RTGCPHYS GCPhysAddrDataBase;
1455
1456	Log(("%s: iScatterGatherEntry=%u\n", __FUNCTION__, iScatterGatherEntry));
1457
1458	GCPhysAddrDataBase = (RTGCPHYS)aScatterGatherReadGC[iScatterGatherEntry].u32PhysAddrSegmentBase;
1459	cbDataToTransfer = aScatterGatherReadGC[iScatterGatherEntry].cbSegment;
1460
1461	Log(("%s: GCPhysAddrDataBase=%RGp cbDataToTransfer=%u\n", __FUNCTION__, GCPhysAddrDataBase, cbDataToTransfer));
1462
1463	PDMDevHlpPhysRead(pDevIns, GCPhysAddrDataBase, pbData, cbDataToTransfer);
1464	pbData += cbDataToTransfer;
1465	}
1466
1467	/* Set address to the next entries to read. */
1468	GCPhysAddrScatterGatherCurrent += cScatterGatherGCRead * pTaskState->cbSGEntry;
1469	} while (cScatterGatherGCLeft > 0);
1470	}
1471
1472	}
1473	else if ( pTaskState->CommandControlBlockGuest.c.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB
1474	\|\| pTaskState->CommandControlBlockGuest.c.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_RESIDUAL_DATA_LENGTH)
1475	{
1476	/* The buffer is not scattered. */
1477	RTGCPHYS GCPhysAddrDataBase = u32PhysAddrCCB;
1478
1479	AssertMsg(GCPhysAddrDataBase != 0, ("Physical address is 0\n"));
1480
1481	pTaskState->DataSeg.cbSeg = cbDataCCB;
1482	pTaskState->DataSeg.pvSeg = RTMemAlloc(pTaskState->DataSeg.cbSeg);
1483	if (!pTaskState->DataSeg.pvSeg)
1484	return VERR_NO_MEMORY;
1485
1486	Log(("Non scattered buffer:\n"));
1487	Log(("u32PhysAddrData=%#x\n", u32PhysAddrCCB));
1488	Log(("cbData=%u\n", cbDataCCB));
1489	Log(("GCPhysAddrDataBase=0x%RGp\n", GCPhysAddrDataBase));
1490
1491	/* Copy the data into the buffer. */
1492	PDMDevHlpPhysRead(pDevIns, GCPhysAddrDataBase, pTaskState->DataSeg.pvSeg, pTaskState->DataSeg.cbSeg);
1493	}
1494	}
1495
1496	return VINF_SUCCESS;
1497	}
1498
1499	/**
1500	* Free allocated resources used for the scatter gather list.
1501	*
1502	* @returns nothing.
1503	* @param pTaskState Pointer to the task state.
1504	*/
1505	static void buslogicR3DataBufferFree(PBUSLOGICTASKSTATE pTaskState)
1506	{
1507	PPDMDEVINS pDevIns = pTaskState->CTX_SUFF(pTargetDevice)->CTX_SUFF(pBusLogic)->CTX_SUFF(pDevIns);
1508	uint32_t cbDataCCB;
1509	uint32_t u32PhysAddrCCB;
1510
1511	/* Extract the data length and physical address from the CCB. */
1512	if (pTaskState->fIs24Bit)
1513	{
1514	u32PhysAddrCCB = ADDR_TO_U32(pTaskState->CommandControlBlockGuest.o.aPhysAddrData);
1515	cbDataCCB = LEN_TO_U32(pTaskState->CommandControlBlockGuest.o.acbData);
1516	}
1517	else
1518	{
1519	u32PhysAddrCCB = pTaskState->CommandControlBlockGuest.n.u32PhysAddrData;
1520	cbDataCCB = pTaskState->CommandControlBlockGuest.n.cbData;
1521	}
1522
1523	#if 1
1524	/* Hack for NT 10/91: A CCB describes a 2K buffer, but TEST UNIT READY is executed. This command
1525	* returns no data, hence the buffer must be left alone!
1526	*/
1527	if (pTaskState->CommandControlBlockGuest.c.abCDB[0] == 0)
1528	cbDataCCB = 0;
1529	#endif
1530
1531	LogFlowFunc(("pTaskState=%#p cbDataCCB=%u direction=%u cbSeg=%u\n", pTaskState, cbDataCCB,
1532	pTaskState->CommandControlBlockGuest.c.uDataDirection, pTaskState->DataSeg.cbSeg));
1533
1534	if ( (cbDataCCB > 0)
1535	&& ( (pTaskState->CommandControlBlockGuest.c.uDataDirection == BUSLOGIC_CCB_DIRECTION_IN)
1536	\|\| (pTaskState->CommandControlBlockGuest.c.uDataDirection == BUSLOGIC_CCB_DIRECTION_UNKNOWN)))
1537	{
1538	if ( (pTaskState->CommandControlBlockGuest.c.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_SCATTER_GATHER)
1539	\|\| (pTaskState->CommandControlBlockGuest.c.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_RESIDUAL_SCATTER_GATHER))
1540	{
1541	uint32_t cScatterGatherGCRead;
1542	uint32_t iScatterGatherEntry;
1543	SGE32 aScatterGatherReadGC[32]; /* Number of scatter gather list entries read from guest memory. */
1544	uint32_t cScatterGatherGCLeft = cbDataCCB / pTaskState->cbSGEntry;
1545	RTGCPHYS GCPhysAddrScatterGatherCurrent = u32PhysAddrCCB;
1546	uint8_t pbData = (uint8_t )pTaskState->DataSeg.pvSeg;
1547
1548	do
1549	{
1550	cScatterGatherGCRead = (cScatterGatherGCLeft < RT_ELEMENTS(aScatterGatherReadGC))
1551	? cScatterGatherGCLeft
1552	: RT_ELEMENTS(aScatterGatherReadGC);
1553	cScatterGatherGCLeft -= cScatterGatherGCRead;
1554
1555	buslogicR3ReadSGEntries(pTaskState, GCPhysAddrScatterGatherCurrent, cScatterGatherGCRead, aScatterGatherReadGC);
1556
1557	for (iScatterGatherEntry = 0; iScatterGatherEntry < cScatterGatherGCRead; iScatterGatherEntry++)
1558	{
1559	RTGCPHYS GCPhysAddrDataBase;
1560	size_t cbDataToTransfer;
1561
1562	Log(("%s: iScatterGatherEntry=%u\n", __FUNCTION__, iScatterGatherEntry));
1563
1564	GCPhysAddrDataBase = (RTGCPHYS)aScatterGatherReadGC[iScatterGatherEntry].u32PhysAddrSegmentBase;
1565	cbDataToTransfer = aScatterGatherReadGC[iScatterGatherEntry].cbSegment;
1566
1567	Log(("%s: GCPhysAddrDataBase=%RGp cbDataToTransfer=%u\n", __FUNCTION__, GCPhysAddrDataBase, cbDataToTransfer));
1568
1569	PDMDevHlpPCIPhysWrite(pDevIns, GCPhysAddrDataBase, pbData, cbDataToTransfer);
1570	pbData += cbDataToTransfer;
1571	}
1572
1573	/* Set address to the next entries to read. */
1574	GCPhysAddrScatterGatherCurrent += cScatterGatherGCRead * pTaskState->cbSGEntry;
1575	} while (cScatterGatherGCLeft > 0);
1576
1577	}
1578	else if ( pTaskState->CommandControlBlockGuest.c.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB
1579	\|\| pTaskState->CommandControlBlockGuest.c.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_RESIDUAL_DATA_LENGTH)
1580	{
1581	/* The buffer is not scattered. */
1582	RTGCPHYS GCPhysAddrDataBase = u32PhysAddrCCB;
1583
1584	AssertMsg(GCPhysAddrDataBase != 0, ("Physical address is 0\n"));
1585
1586	Log(("Non-scattered buffer:\n"));
1587	Log(("u32PhysAddrData=%#x\n", u32PhysAddrCCB));
1588	Log(("cbData=%u\n", cbDataCCB));
1589	Log(("GCPhysAddrDataBase=0x%RGp\n", GCPhysAddrDataBase));
1590
1591	/* Copy the data into the guest memory. */
1592	PDMDevHlpPCIPhysWrite(pDevIns, GCPhysAddrDataBase, pTaskState->DataSeg.pvSeg, pTaskState->DataSeg.cbSeg);
1593	}
1594
1595	}
1596	/* Update residual data length. */
1597	if ( (pTaskState->CommandControlBlockGuest.c.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_RESIDUAL_DATA_LENGTH)
1598	\|\| (pTaskState->CommandControlBlockGuest.c.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_RESIDUAL_SCATTER_GATHER))
1599	{
1600	uint32_t cbResidual;
1601
1602	/** @todo we need to get the actual transfer length from the VSCSI layer?! */
1603	cbResidual = 0; //LEN_TO_U32(pTaskState->CCBGuest.acbData) - ???;
1604	if (pTaskState->fIs24Bit)
1605	U32_TO_LEN(pTaskState->CommandControlBlockGuest.o.acbData, cbResidual);
1606	else
1607	pTaskState->CommandControlBlockGuest.n.cbData = cbResidual;
1608	}
1609
1610	RTMemFree(pTaskState->DataSeg.pvSeg);
1611	pTaskState->DataSeg.pvSeg = NULL;
1612	pTaskState->DataSeg.cbSeg = 0;
1613	}
1614
1615	/** Convert sense buffer length taking into account shortcut values. */
1616	static uint32_t buslogicR3ConvertSenseBufferLength(uint32_t cbSense)
1617	{
1618	/* Convert special sense buffer length values. */
1619	if (cbSense == 0)
1620	cbSense = 14; /* 0 means standard 14-byte buffer. */
1621	else if (cbSense == 1)
1622	cbSense = 0; /* 1 means no sense data. */
1623	else if (cbSense < 8)
1624	AssertMsgFailed(("Reserved cbSense value of %d used!\n", cbSense));
1625
1626	return cbSense;
1627	}
1628
1629	/**
1630	* Free the sense buffer.
1631	*
1632	* @returns nothing.
1633	* @param pTaskState Pointer to the task state.
1634	* @param fCopy If sense data should be copied to guest memory.
1635	*/
1636	static void buslogicR3SenseBufferFree(PBUSLOGICTASKSTATE pTaskState, bool fCopy)
1637	{
1638	uint32_t cbSenseBuffer;
1639
1640	cbSenseBuffer = buslogicR3ConvertSenseBufferLength(pTaskState->CommandControlBlockGuest.c.cbSenseData);
1641
1642	/* Copy the sense buffer into guest memory if requested. */
1643	if (fCopy && cbSenseBuffer)
1644	{
1645	PPDMDEVINS pDevIns = pTaskState->CTX_SUFF(pTargetDevice)->CTX_SUFF(pBusLogic)->CTX_SUFF(pDevIns);
1646	RTGCPHYS GCPhysAddrSenseBuffer;
1647
1648	/* With 32-bit CCBs, the (optional) sense buffer physical address is provided separately.
1649	* On the other hand, with 24-bit CCBs, the sense buffer is simply located at the end of
1650	* the CCB, right after the variable-length CDB.
1651	*/
1652	if (pTaskState->fIs24Bit)
1653	{
1654	GCPhysAddrSenseBuffer = pTaskState->MailboxGuest.u32PhysAddrCCB;
1655	GCPhysAddrSenseBuffer += pTaskState->CommandControlBlockGuest.c.cbCDB + RT_OFFSETOF(CCB24, abCDB);
1656	}
1657	else
1658	GCPhysAddrSenseBuffer = pTaskState->CommandControlBlockGuest.n.u32PhysAddrSenseData;
1659
1660	Log3(("%s: sense buffer: %.*Rhxs\n", __FUNCTION__, cbSenseBuffer, pTaskState->pbSenseBuffer));
1661	PDMDevHlpPCIPhysWrite(pDevIns, GCPhysAddrSenseBuffer, pTaskState->pbSenseBuffer, cbSenseBuffer);
1662	}
1663
1664	RTMemFree(pTaskState->pbSenseBuffer);
1665	pTaskState->pbSenseBuffer = NULL;
1666	}
1667
1668	/**
1669	* Alloc the sense buffer.
1670	*
1671	* @returns VBox status code.
1672	* @param pTaskState Pointer to the task state.
1673	* @note Current assumption is that the sense buffer is not scattered and does not cross a page boundary.
1674	*/
1675	static int buslogicR3SenseBufferAlloc(PBUSLOGICTASKSTATE pTaskState)
1676	{
1677	PPDMDEVINS pDevIns = pTaskState->CTX_SUFF(pTargetDevice)->CTX_SUFF(pBusLogic)->CTX_SUFF(pDevIns);
1678	uint32_t cbSenseBuffer;
1679
1680	pTaskState->pbSenseBuffer = NULL;
1681
1682	cbSenseBuffer = buslogicR3ConvertSenseBufferLength(pTaskState->CommandControlBlockGuest.c.cbSenseData);
1683	if (cbSenseBuffer)
1684	{
1685	pTaskState->pbSenseBuffer = (uint8_t *)RTMemAllocZ(cbSenseBuffer);
1686	if (!pTaskState->pbSenseBuffer)
1687	return VERR_NO_MEMORY;
1688	}
1689
1690	return VINF_SUCCESS;
1691	}
1692
1693	#endif /* IN_RING3 */
1694
1695	/**
1696	* Parses the command buffer and executes it.
1697	*
1698	* @returns VBox status code.
1699	* @param pBusLogic Pointer to the BusLogic device instance.
1700	*/
1701	static int buslogicProcessCommand(PBUSLOGIC pBusLogic)
1702	{
1703	int rc = VINF_SUCCESS;
1704	bool fSuppressIrq = false;
1705
1706	LogFlowFunc(("pBusLogic=%#p\n", pBusLogic));
1707	AssertMsg(pBusLogic->uOperationCode != 0xff, ("There is no command to execute\n"));
1708
1709	switch (pBusLogic->uOperationCode)
1710	{
1711	case BUSLOGICCOMMAND_TEST_CMDC_INTERRUPT:
1712	/* Valid command, no reply. */
1713	pBusLogic->cbReplyParametersLeft = 0;
1714	break;
1715	case BUSLOGICCOMMAND_INQUIRE_PCI_HOST_ADAPTER_INFORMATION:
1716	{
1717	PReplyInquirePCIHostAdapterInformation pReply = (PReplyInquirePCIHostAdapterInformation)pBusLogic->aReplyBuffer;
1718	memset(pReply, 0, sizeof(ReplyInquirePCIHostAdapterInformation));
1719
1720	/* It seems VMware does not provide valid information here too, lets do the same :) */
1721	pReply->InformationIsValid = 0;
1722	pReply->IsaIOPort = pBusLogic->uISABaseCode;
1723	pReply->IRQ = PCIDevGetInterruptLine(&pBusLogic->dev);
1724	pBusLogic->cbReplyParametersLeft = sizeof(ReplyInquirePCIHostAdapterInformation);
1725	break;
1726	}
1727	case BUSLOGICCOMMAND_MODIFY_IO_ADDRESS:
1728	{
1729	/* Modify the ISA-compatible I/O port base. Note that this technically
1730	* violates the PCI spec, as this address is not reported through PCI.
1731	* However, it is required for compatibility with old drivers.
1732	*/
1733	#ifdef IN_RING3
1734	Log(("ISA I/O for PCI (code %x)\n", pBusLogic->aCommandBuffer[0]));
1735	buslogicR3RegisterISARange(pBusLogic, pBusLogic->aCommandBuffer[0]);
1736	pBusLogic->cbReplyParametersLeft = 0;
1737	fSuppressIrq = true;
1738	break;
1739	#else
1740	AssertMsgFailed(("Must never get here!\n"));
1741	#endif
1742	}
1743	case BUSLOGICCOMMAND_INQUIRE_BOARD_ID:
1744	{
1745	/* The special option byte is important: If it is '0' or 'B', Windows NT drivers
1746	* for Adaptec AHA-154x may claim the adapter. The BusLogic drivers will claim
1747	* the adapter only when the byte is not '0' or 'B'.
1748	*/
1749	pBusLogic->aReplyBuffer[0] = 'A'; /* Firmware option bytes */
1750	pBusLogic->aReplyBuffer[1] = 'A'; /* Special option byte */
1751
1752	/* We report version 5.07B. This reply will provide the first two digits. */
1753	pBusLogic->aReplyBuffer[2] = '5'; /* Major version 5 */
1754	pBusLogic->aReplyBuffer[3] = '0'; /* Minor version 0 */
1755	pBusLogic->cbReplyParametersLeft = 4; /* Reply is 4 bytes long */
1756	break;
1757	}
1758	case BUSLOGICCOMMAND_INQUIRE_FIRMWARE_VERSION_3RD_LETTER:
1759	{
1760	pBusLogic->aReplyBuffer[0] = '7';
1761	pBusLogic->cbReplyParametersLeft = 1;
1762	break;
1763	}
1764	case BUSLOGICCOMMAND_INQUIRE_FIRMWARE_VERSION_LETTER:
1765	{
1766	pBusLogic->aReplyBuffer[0] = 'B';
1767	pBusLogic->cbReplyParametersLeft = 1;
1768	break;
1769	}
1770	case BUSLOGICCOMMAND_SET_ADAPTER_OPTIONS:
1771	/* The parameter list length is determined by the first byte of the command buffer. */
1772	if (pBusLogic->iParameter == 1)
1773	{
1774	/* First pass - set the number of following parameter bytes. */
1775	pBusLogic->cbCommandParametersLeft = pBusLogic->aCommandBuffer[0];
1776	Log(("Set HA options: %u bytes follow\n", pBusLogic->cbCommandParametersLeft));
1777	}
1778	else
1779	{
1780	/* Second pass - process received data. */
1781	Log(("Set HA options: received %u bytes\n", pBusLogic->aCommandBuffer[0]));
1782	/* We ignore the data - it only concerns the SCSI hardware protocol. */
1783	}
1784	pBusLogic->cbReplyParametersLeft = 0;
1785	break;
1786
1787	case BUSLOGICCOMMAND_EXECUTE_SCSI_COMMAND:
1788	/* The parameter list length is at least 12 bytes; the 12th byte determines
1789	* the number of additional CDB bytes that will follow.
1790	*/
1791	if (pBusLogic->iParameter == 12)
1792	{
1793	/* First pass - set the number of following CDB bytes. */
1794	pBusLogic->cbCommandParametersLeft = pBusLogic->aCommandBuffer[11];
1795	Log(("Execute SCSI cmd: %u more bytes follow\n", pBusLogic->cbCommandParametersLeft));
1796	}
1797	else
1798	{
1799	PESCMD pCmd;
1800
1801	/* Second pass - process received data. */
1802	Log(("Execute SCSI cmd: received %u bytes\n", pBusLogic->aCommandBuffer[0]));
1803
1804	pCmd = (PESCMD)pBusLogic->aCommandBuffer;
1805	Log(("Addr %08X, cbData %08X, cbCDB=%u\n", pCmd->u32PhysAddrData, pCmd->cbData, pCmd->cbCDB));
1806	}
1807	// This is currently a dummy - just fails every command.
1808	pBusLogic->cbReplyParametersLeft = 4;
1809	pBusLogic->aReplyBuffer[0] = pBusLogic->aReplyBuffer[1] = 0;
1810	pBusLogic->aReplyBuffer[2] = 0x11; /* HBA status (timeout). */
1811	pBusLogic->aReplyBuffer[3] = 0; /* Device status. */
1812	break;
1813
1814	case BUSLOGICCOMMAND_INQUIRE_HOST_ADAPTER_MODEL_NUMBER:
1815	{
1816	/* The reply length is set by the guest and is found in the first byte of the command buffer. */
1817	pBusLogic->cbReplyParametersLeft = pBusLogic->aCommandBuffer[0];
1818	memset(pBusLogic->aReplyBuffer, ' ', pBusLogic->cbReplyParametersLeft);
1819	const char aModelName[] = "958";
1820	int cCharsToTransfer = (pBusLogic->cbReplyParametersLeft <= (sizeof(aModelName) - 1))
1821	? pBusLogic->cbReplyParametersLeft
1822	: sizeof(aModelName) - 1;
1823
1824	for (int i = 0; i < cCharsToTransfer; i++)
1825	pBusLogic->aReplyBuffer[i] = aModelName[i];
1826
1827	break;
1828	}
1829	case BUSLOGICCOMMAND_INQUIRE_CONFIGURATION:
1830	{
1831	uint8_t uPciIrq = PCIDevGetInterruptLine(&pBusLogic->dev);
1832
1833	pBusLogic->cbReplyParametersLeft = sizeof(ReplyInquireConfiguration);
1834	PReplyInquireConfiguration pReply = (PReplyInquireConfiguration)pBusLogic->aReplyBuffer;
1835	memset(pReply, 0, sizeof(ReplyInquireConfiguration));
1836
1837	pReply->uHostAdapterId = 7; /* The controller has always 7 as ID. */
1838	pReply->fDmaChannel6 = 1; /* DMA channel 6 is a good default. */
1839	/* The PCI IRQ is not necessarily representable in this structure.
1840	* If that is the case, the guest likely won't function correctly,
1841	* therefore we log a warning.
1842	*/
1843	switch (uPciIrq)
1844	{
1845	case 9: pReply->fIrqChannel9 = 1; break;
1846	case 10: pReply->fIrqChannel10 = 1; break;
1847	case 11: pReply->fIrqChannel11 = 1; break;
1848	case 12: pReply->fIrqChannel12 = 1; break;
1849	case 14: pReply->fIrqChannel14 = 1; break;
1850	case 15: pReply->fIrqChannel15 = 1; break;
1851	default:
1852	LogRel(("Warning: PCI IRQ %d cannot be represented as ISA!\n", uPciIrq));
1853	break;
1854	}
1855	break;
1856	}
1857	case BUSLOGICCOMMAND_INQUIRE_EXTENDED_SETUP_INFORMATION:
1858	{
1859	/* Some Adaptec AHA-154x drivers (e.g. OS/2) execute this command and expect
1860	* it to fail. If it succeeds, the drivers refuse to load. However, some newer
1861	* Adaptec 154x models supposedly support it too??
1862	*/
1863
1864	/* The reply length is set by the guest and is found in the first byte of the command buffer. */
1865	pBusLogic->cbReplyParametersLeft = pBusLogic->aCommandBuffer[0];
1866	PReplyInquireExtendedSetupInformation pReply = (PReplyInquireExtendedSetupInformation)pBusLogic->aReplyBuffer;
1867	memset(pReply, 0, sizeof(ReplyInquireExtendedSetupInformation));
1868
1869	/** @todo should this reflect the RAM contents (AutoSCSIRam)? */
1870	pReply->uBusType = 'E'; /* EISA style */
1871	pReply->u16ScatterGatherLimit = 8192;
1872	pReply->cMailbox = pBusLogic->cMailbox;
1873	pReply->uMailboxAddressBase = (uint32_t)pBusLogic->GCPhysAddrMailboxOutgoingBase;
1874	pReply->fLevelSensitiveInterrupt = true;
1875	pReply->fHostWideSCSI = true;
1876	pReply->fHostUltraSCSI = true;
1877	memcpy(pReply->aFirmwareRevision, "07B", sizeof(pReply->aFirmwareRevision));
1878
1879	break;
1880	}
1881	case BUSLOGICCOMMAND_INQUIRE_SETUP_INFORMATION:
1882	{
1883	/* The reply length is set by the guest and is found in the first byte of the command buffer. */
1884	pBusLogic->cbReplyParametersLeft = pBusLogic->aCommandBuffer[0];
1885	PReplyInquireSetupInformation pReply = (PReplyInquireSetupInformation)pBusLogic->aReplyBuffer;
1886	memset(pReply, 0, sizeof(ReplyInquireSetupInformation));
1887	pReply->fSynchronousInitiationEnabled = true;
1888	pReply->fParityCheckingEnabled = true;
1889	pReply->cMailbox = pBusLogic->cMailbox;
1890	U32_TO_ADDR(pReply->MailboxAddress, pBusLogic->GCPhysAddrMailboxOutgoingBase);
1891	pReply->uSignature = 'B';
1892	/* The 'D' signature prevents Adaptec's OS/2 drivers from getting too
1893	* friendly with BusLogic hardware and upsetting the HBA state.
1894	*/
1895	pReply->uCharacterD = 'D'; /* BusLogic model. */
1896	pReply->uHostBusType = 'F'; /* PCI bus. */
1897	break;
1898	}
1899	case BUSLOGICCOMMAND_FETCH_HOST_ADAPTER_LOCAL_RAM:
1900	{
1901	/*
1902	* First element in the command buffer contains start offset to read from
1903	* and second one the number of bytes to read.
1904	*/
1905	uint8_t uOffset = pBusLogic->aCommandBuffer[0];
1906	pBusLogic->cbReplyParametersLeft = pBusLogic->aCommandBuffer[1];
1907
1908	pBusLogic->fUseLocalRam = true;
1909	pBusLogic->iReply = uOffset;
1910	break;
1911	}
1912	case BUSLOGICCOMMAND_INITIALIZE_MAILBOX:
1913	{
1914	PRequestInitMbx pRequest = (PRequestInitMbx)pBusLogic->aCommandBuffer;
1915
1916	pBusLogic->fMbxIs24Bit = true;
1917	pBusLogic->cMailbox = pRequest->cMailbox;
1918	pBusLogic->GCPhysAddrMailboxOutgoingBase = (RTGCPHYS)ADDR_TO_U32(pRequest->aMailboxBaseAddr);
1919	/* The area for incoming mailboxes is right after the last entry of outgoing mailboxes. */
1920	pBusLogic->GCPhysAddrMailboxIncomingBase = pBusLogic->GCPhysAddrMailboxOutgoingBase + (pBusLogic->cMailbox * sizeof(Mailbox24));
1921
1922	Log(("GCPhysAddrMailboxOutgoingBase=%RGp\n", pBusLogic->GCPhysAddrMailboxOutgoingBase));
1923	Log(("GCPhysAddrMailboxIncomingBase=%RGp\n", pBusLogic->GCPhysAddrMailboxIncomingBase));
1924	Log(("cMailboxes=%u (24-bit mode)\n", pBusLogic->cMailbox));
1925	LogRel(("Initialized 24-bit mailbox, %d entries at %08x\n", pRequest->cMailbox, ADDR_TO_U32(pRequest->aMailboxBaseAddr)));
1926
1927	pBusLogic->regStatus &= ~BL_STAT_INREQ;
1928	pBusLogic->cbReplyParametersLeft = 0;
1929	break;
1930	}
1931	case BUSLOGICCOMMAND_INITIALIZE_EXTENDED_MAILBOX:
1932	{
1933	PRequestInitializeExtendedMailbox pRequest = (PRequestInitializeExtendedMailbox)pBusLogic->aCommandBuffer;
1934
1935	pBusLogic->fMbxIs24Bit = false;
1936	pBusLogic->cMailbox = pRequest->cMailbox;
1937	pBusLogic->GCPhysAddrMailboxOutgoingBase = (RTGCPHYS)pRequest->uMailboxBaseAddress;
1938	/* The area for incoming mailboxes is right after the last entry of outgoing mailboxes. */
1939	pBusLogic->GCPhysAddrMailboxIncomingBase = (RTGCPHYS)pRequest->uMailboxBaseAddress + (pBusLogic->cMailbox * sizeof(Mailbox32));
1940
1941	Log(("GCPhysAddrMailboxOutgoingBase=%RGp\n", pBusLogic->GCPhysAddrMailboxOutgoingBase));
1942	Log(("GCPhysAddrMailboxIncomingBase=%RGp\n", pBusLogic->GCPhysAddrMailboxIncomingBase));
1943	Log(("cMailboxes=%u (32-bit mode)\n", pBusLogic->cMailbox));
1944	LogRel(("Initialized 32-bit mailbox, %d entries at %08x\n", pRequest->cMailbox, pRequest->uMailboxBaseAddress));
1945
1946	pBusLogic->regStatus &= ~BL_STAT_INREQ;
1947	pBusLogic->cbReplyParametersLeft = 0;
1948	break;
1949	}
1950	case BUSLOGICCOMMAND_ENABLE_STRICT_ROUND_ROBIN_MODE:
1951	{
1952	if (pBusLogic->aCommandBuffer[0] == 0)
1953	pBusLogic->fStrictRoundRobinMode = false;
1954	else if (pBusLogic->aCommandBuffer[0] == 1)
1955	pBusLogic->fStrictRoundRobinMode = true;
1956	else
1957	AssertMsgFailed(("Invalid round robin mode %d\n", pBusLogic->aCommandBuffer[0]));
1958
1959	pBusLogic->cbReplyParametersLeft = 0;
1960	break;
1961	}
1962	case BUSLOGICCOMMAND_SET_CCB_FORMAT:
1963	{
1964	if (pBusLogic->aCommandBuffer[0] == 0)
1965	pBusLogic->fExtendedLunCCBFormat = false;
1966	else if (pBusLogic->aCommandBuffer[0] == 1)
1967	pBusLogic->fExtendedLunCCBFormat = true;
1968	else
1969	AssertMsgFailed(("Invalid CCB format %d\n", pBusLogic->aCommandBuffer[0]));
1970
1971	pBusLogic->cbReplyParametersLeft = 0;
1972	break;
1973	}
1974	case BUSLOGICCOMMAND_INQUIRE_INSTALLED_DEVICES_ID_0_TO_7:
1975	/* This is supposed to send TEST UNIT READY to each target/LUN.
1976	* We cheat and skip that, since we already know what's attached
1977	*/
1978	memset(pBusLogic->aReplyBuffer, 0, 8);
1979	for (int i = 0; i < 8; ++i)
1980	{
1981	if (pBusLogic->aDeviceStates[i].fPresent)
1982	pBusLogic->aReplyBuffer[i] = 1;
1983	}
1984	pBusLogic->aReplyBuffer[7] = 0; /* HA hardcoded at ID 7. */
1985	pBusLogic->cbReplyParametersLeft = 8;
1986	break;
1987	case BUSLOGICCOMMAND_INQUIRE_INSTALLED_DEVICES_ID_8_TO_15:
1988	/* See note about cheating above. */
1989	memset(pBusLogic->aReplyBuffer, 0, 8);
1990	for (int i = 0; i < 8; ++i)
1991	{
1992	if (pBusLogic->aDeviceStates[i + 8].fPresent)
1993	pBusLogic->aReplyBuffer[i] = 1;
1994	}
1995	pBusLogic->cbReplyParametersLeft = 8;
1996	break;
1997	case BUSLOGICCOMMAND_INQUIRE_TARGET_DEVICES:
1998	{
1999	/* Each bit which is set in the 16bit wide variable means a present device. */
2000	uint16_t u16TargetsPresentMask = 0;
2001
2002	for (uint8_t i = 0; i < RT_ELEMENTS(pBusLogic->aDeviceStates); i++)
2003	{
2004	if (pBusLogic->aDeviceStates[i].fPresent)
2005	u16TargetsPresentMask \|= (1 << i);
2006	}
2007	pBusLogic->aReplyBuffer[0] = (uint8_t)u16TargetsPresentMask;
2008	pBusLogic->aReplyBuffer[1] = (uint8_t)(u16TargetsPresentMask >> 8);
2009	pBusLogic->cbReplyParametersLeft = 2;
2010	break;
2011	}
2012	case BUSLOGICCOMMAND_INQUIRE_SYNCHRONOUS_PERIOD:
2013	{
2014	pBusLogic->cbReplyParametersLeft = pBusLogic->aCommandBuffer[0];
2015
2016	for (uint8_t i = 0; i < pBusLogic->cbReplyParametersLeft; i++)
2017	pBusLogic->aReplyBuffer[i] = 0; /** @todo Figure if we need something other here. It's not needed for the linux driver */
2018
2019	break;
2020	}
2021	case BUSLOGICCOMMAND_DISABLE_HOST_ADAPTER_INTERRUPT:
2022	{
2023	if (pBusLogic->aCommandBuffer[0] == 0)
2024	pBusLogic->fIRQEnabled = false;
2025	else
2026	pBusLogic->fIRQEnabled = true;
2027	/* No interrupt signaled regardless of enable/disable. */
2028	fSuppressIrq = true;
2029	break;
2030	}
2031	case BUSLOGICCOMMAND_ECHO_COMMAND_DATA:
2032	{
2033	pBusLogic->aReplyBuffer[0] = pBusLogic->aCommandBuffer[0];
2034	pBusLogic->cbReplyParametersLeft = 1;
2035	break;
2036	}
2037	case BUSLOGICCOMMAND_SET_PREEMPT_TIME_ON_BUS:
2038	{
2039	pBusLogic->cbReplyParametersLeft = 0;
2040	pBusLogic->LocalRam.structured.autoSCSIData.uBusOnDelay = pBusLogic->aCommandBuffer[0];
2041	Log(("Bus-on time: %d\n", pBusLogic->aCommandBuffer[0]));
2042	break;
2043	}
2044	case BUSLOGICCOMMAND_SET_TIME_OFF_BUS:
2045	{
2046	pBusLogic->cbReplyParametersLeft = 0;
2047	pBusLogic->LocalRam.structured.autoSCSIData.uBusOffDelay = pBusLogic->aCommandBuffer[0];
2048	Log(("Bus-off time: %d\n", pBusLogic->aCommandBuffer[0]));
2049	break;
2050	}
2051	case BUSLOGICCOMMAND_SET_BUS_TRANSFER_RATE:
2052	{
2053	pBusLogic->cbReplyParametersLeft = 0;
2054	pBusLogic->LocalRam.structured.autoSCSIData.uDMATransferRate = pBusLogic->aCommandBuffer[0];
2055	Log(("Bus transfer rate: %02X\n", pBusLogic->aCommandBuffer[0]));
2056	break;
2057	}
2058	case BUSLOGICCOMMAND_WRITE_BUSMASTER_CHIP_FIFO:
2059	{
2060	RTGCPHYS GCPhysFifoBuf;
2061	Addr24 addr;
2062
2063	pBusLogic->cbReplyParametersLeft = 0;
2064	addr.hi = pBusLogic->aCommandBuffer[0];
2065	addr.mid = pBusLogic->aCommandBuffer[1];
2066	addr.lo = pBusLogic->aCommandBuffer[2];
2067	GCPhysFifoBuf = (RTGCPHYS)ADDR_TO_U32(addr);
2068	Log(("Write busmaster FIFO at: %04X\n", ADDR_TO_U32(addr)));
2069	PDMDevHlpPhysRead(pBusLogic->CTX_SUFF(pDevIns), GCPhysFifoBuf,
2070	&pBusLogic->LocalRam.u8View[64], 64);
2071	break;
2072	}
2073	case BUSLOGICCOMMAND_READ_BUSMASTER_CHIP_FIFO:
2074	{
2075	RTGCPHYS GCPhysFifoBuf;
2076	Addr24 addr;
2077
2078	pBusLogic->cbReplyParametersLeft = 0;
2079	addr.hi = pBusLogic->aCommandBuffer[0];
2080	addr.mid = pBusLogic->aCommandBuffer[1];
2081	addr.lo = pBusLogic->aCommandBuffer[2];
2082	GCPhysFifoBuf = (RTGCPHYS)ADDR_TO_U32(addr);
2083	Log(("Read busmaster FIFO at: %04X\n", ADDR_TO_U32(addr)));
2084	PDMDevHlpPCIPhysWrite(pBusLogic->CTX_SUFF(pDevIns), GCPhysFifoBuf,
2085	&pBusLogic->LocalRam.u8View[64], 64);
2086	break;
2087	}
2088	default:
2089	AssertMsgFailed(("Invalid command %#x\n", pBusLogic->uOperationCode));
2090	case BUSLOGICCOMMAND_EXT_BIOS_INFO:
2091	case BUSLOGICCOMMAND_UNLOCK_MAILBOX:
2092	/* Commands valid for Adaptec 154xC which we don't handle since
2093	* we pretend being 154xB compatible. Just mark the command as invalid.
2094	*/
2095	Log(("Command %#x not valid for this adapter\n", pBusLogic->uOperationCode));
2096	pBusLogic->cbReplyParametersLeft = 0;
2097	pBusLogic->regStatus \|= BL_STAT_CMDINV;
2098	break;
2099	case BUSLOGICCOMMAND_EXECUTE_MAILBOX_COMMAND: /* Should be handled already. */
2100	AssertMsgFailed(("Invalid mailbox execute state!\n"));
2101	}
2102
2103	Log(("uOperationCode=%#x, cbReplyParametersLeft=%d\n", pBusLogic->uOperationCode, pBusLogic->cbReplyParametersLeft));
2104
2105	/* Set the data in ready bit in the status register in case the command has a reply. */
2106	if (pBusLogic->cbReplyParametersLeft)
2107	pBusLogic->regStatus \|= BL_STAT_DIRRDY;
2108	else if (!pBusLogic->cbCommandParametersLeft)
2109	buslogicCommandComplete(pBusLogic, fSuppressIrq);
2110
2111	return rc;
2112	}
2113
2114	/**
2115	* Read a register from the BusLogic adapter.
2116	*
2117	* @returns VBox status code.
2118	* @param pBusLogic Pointer to the BusLogic instance data.
2119	* @param iRegister The index of the register to read.
2120	* @param pu32 Where to store the register content.
2121	*/
2122	static int buslogicRegisterRead(PBUSLOGIC pBusLogic, unsigned iRegister, uint32_t *pu32)
2123	{
2124	int rc = VINF_SUCCESS;
2125
2126	switch (iRegister)
2127	{
2128	case BUSLOGIC_REGISTER_STATUS:
2129	{
2130	*pu32 = pBusLogic->regStatus;
2131
2132	/* If the diagnostic active bit is set, we are in a guest-initiated
2133	* hard reset. If the guest reads the status register and waits for
2134	* the host adapter ready bit to be set, we terminate the reset right
2135	* away. However, guests may also expect the reset condition to clear
2136	* automatically after a period of time, in which case we can't show
2137	* the DIAG bit at all.
2138	*/
2139	if (pBusLogic->regStatus & BL_STAT_DACT)
2140	{
2141	uint64_t u64AccessTime = PDMDevHlpTMTimeVirtGetNano(pBusLogic->CTX_SUFF(pDevIns));
2142
2143	pBusLogic->regStatus &= ~BL_STAT_DACT;
2144	pBusLogic->regStatus \|= BL_STAT_HARDY;
2145
2146	if (u64AccessTime - pBusLogic->u64ResetTime > BUSLOGIC_RESET_DURATION_NS)
2147	{
2148	/* If reset already expired, let the guest see that right away. */
2149	*pu32 = pBusLogic->regStatus;
2150	pBusLogic->u64ResetTime = 0;
2151	}
2152	}
2153	break;
2154	}
2155	case BUSLOGIC_REGISTER_DATAIN:
2156	{
2157	if (pBusLogic->fUseLocalRam)
2158	*pu32 = pBusLogic->LocalRam.u8View[pBusLogic->iReply];
2159	else
2160	*pu32 = pBusLogic->aReplyBuffer[pBusLogic->iReply];
2161
2162	/* Careful about underflow - guest can read data register even if
2163	* no data is available.
2164	*/
2165	if (pBusLogic->cbReplyParametersLeft)
2166	{
2167	pBusLogic->iReply++;
2168	pBusLogic->cbReplyParametersLeft--;
2169	if (!pBusLogic->cbReplyParametersLeft)
2170	{
2171	/*
2172	* Reply finished, set command complete bit, unset data-in ready bit and
2173	* interrupt the guest if enabled.
2174	*/
2175	buslogicCommandComplete(pBusLogic, false);
2176	}
2177	}
2178	LogFlowFunc(("data=%02x, iReply=%d, cbReplyParametersLeft=%u\n", *pu32,
2179	pBusLogic->iReply, pBusLogic->cbReplyParametersLeft));
2180	break;
2181	}
2182	case BUSLOGIC_REGISTER_INTERRUPT:
2183	{
2184	*pu32 = pBusLogic->regInterrupt;
2185	break;
2186	}
2187	case BUSLOGIC_REGISTER_GEOMETRY:
2188	{
2189	*pu32 = pBusLogic->regGeometry;
2190	break;
2191	}
2192	default:
2193	*pu32 = UINT32_C(0xffffffff);
2194	}
2195
2196	Log2(("%s: pu32=%p:{%.*Rhxs} iRegister=%d rc=%Rrc\n",
2197	__FUNCTION__, pu32, 1, pu32, iRegister, rc));
2198
2199	return rc;
2200	}
2201
2202	/**
2203	* Write a value to a register.
2204	*
2205	* @returns VBox status code.
2206	* @param pBusLogic Pointer to the BusLogic instance data.
2207	* @param iRegister The index of the register to read.
2208	* @param uVal The value to write.
2209	*/
2210	static int buslogicRegisterWrite(PBUSLOGIC pBusLogic, unsigned iRegister, uint8_t uVal)
2211	{
2212	int rc = VINF_SUCCESS;
2213
2214	switch (iRegister)
2215	{
2216	case BUSLOGIC_REGISTER_CONTROL:
2217	{
2218	if ((uVal & BL_CTRL_RHARD) \|\| (uVal & BL_CTRL_RSOFT))
2219	{
2220	#ifdef IN_RING3
2221	bool fHardReset = !!(uVal & BL_CTRL_RHARD);
2222
2223	LogRel(("BusLogic: %s reset\n", fHardReset ? "hard" : "soft"));
2224	buslogicR3InitiateReset(pBusLogic, fHardReset);
2225	#else
2226	rc = VINF_IOM_R3_IOPORT_WRITE;
2227	#endif
2228	break;
2229	}
2230
2231	rc = PDMCritSectEnter(&pBusLogic->CritSectIntr, VINF_IOM_R3_IOPORT_WRITE);
2232	if (rc != VINF_SUCCESS)
2233	return rc;
2234
2235	#ifdef LOG_ENABLED
2236	uint32_t cMailboxesReady = ASMAtomicXchgU32(&pBusLogic->cInMailboxesReady, 0);
2237	Log(("%u incoming mailboxes were ready when this interrupt was cleared\n", cMailboxesReady));
2238	#endif
2239
2240	if (uVal & BL_CTRL_RINT)
2241	buslogicClearInterrupt(pBusLogic);
2242
2243	PDMCritSectLeave(&pBusLogic->CritSectIntr);
2244
2245	break;
2246	}
2247	case BUSLOGIC_REGISTER_COMMAND:
2248	{
2249	/* Fast path for mailbox execution command. */
2250	if ((uVal == BUSLOGICCOMMAND_EXECUTE_MAILBOX_COMMAND) && (pBusLogic->uOperationCode == 0xff))
2251	{
2252	/* If there are no mailboxes configured, don't even try to do anything. */
2253	if (pBusLogic->cMailbox)
2254	{
2255	ASMAtomicIncU32(&pBusLogic->cMailboxesReady);
2256	if (!ASMAtomicXchgBool(&pBusLogic->fNotificationSent, true))
2257	{
2258	/* Send new notification to the queue. */
2259	PPDMQUEUEITEMCORE pItem = PDMQueueAlloc(pBusLogic->CTX_SUFF(pNotifierQueue));
2260	AssertMsg(pItem, ("Allocating item for queue failed\n"));
2261	PDMQueueInsert(pBusLogic->CTX_SUFF(pNotifierQueue), (PPDMQUEUEITEMCORE)pItem);
2262	}
2263	}
2264
2265	return rc;
2266	}
2267
2268	/*
2269	* Check if we are already fetch command parameters from the guest.
2270	* If not we initialize executing a new command.
2271	*/
2272	if (pBusLogic->uOperationCode == 0xff)
2273	{
2274	pBusLogic->uOperationCode = uVal;
2275	pBusLogic->iParameter = 0;
2276
2277	/* Mark host adapter as busy and clear the invalid status bit. */
2278	pBusLogic->regStatus &= ~(BL_STAT_HARDY \| BL_STAT_CMDINV);
2279
2280	/* Get the number of bytes for parameters from the command code. */
2281	switch (pBusLogic->uOperationCode)
2282	{
2283	case BUSLOGICCOMMAND_TEST_CMDC_INTERRUPT:
2284	case BUSLOGICCOMMAND_INQUIRE_FIRMWARE_VERSION_LETTER:
2285	case BUSLOGICCOMMAND_INQUIRE_BOARD_ID:
2286	case BUSLOGICCOMMAND_INQUIRE_FIRMWARE_VERSION_3RD_LETTER:
2287	case BUSLOGICCOMMAND_INQUIRE_PCI_HOST_ADAPTER_INFORMATION:
2288	case BUSLOGICCOMMAND_INQUIRE_CONFIGURATION:
2289	case BUSLOGICCOMMAND_INQUIRE_INSTALLED_DEVICES_ID_0_TO_7:
2290	case BUSLOGICCOMMAND_INQUIRE_INSTALLED_DEVICES_ID_8_TO_15:
2291	case BUSLOGICCOMMAND_INQUIRE_TARGET_DEVICES:
2292	pBusLogic->cbCommandParametersLeft = 0;
2293	break;
2294	case BUSLOGICCOMMAND_MODIFY_IO_ADDRESS:
2295	case BUSLOGICCOMMAND_INQUIRE_EXTENDED_SETUP_INFORMATION:
2296	case BUSLOGICCOMMAND_INQUIRE_SETUP_INFORMATION:
2297	case BUSLOGICCOMMAND_INQUIRE_HOST_ADAPTER_MODEL_NUMBER:
2298	case BUSLOGICCOMMAND_ENABLE_STRICT_ROUND_ROBIN_MODE:
2299	case BUSLOGICCOMMAND_SET_CCB_FORMAT:
2300	case BUSLOGICCOMMAND_INQUIRE_SYNCHRONOUS_PERIOD:
2301	case BUSLOGICCOMMAND_DISABLE_HOST_ADAPTER_INTERRUPT:
2302	case BUSLOGICCOMMAND_ECHO_COMMAND_DATA:
2303	case BUSLOGICCOMMAND_SET_PREEMPT_TIME_ON_BUS:
2304	case BUSLOGICCOMMAND_SET_TIME_OFF_BUS:
2305	case BUSLOGICCOMMAND_SET_BUS_TRANSFER_RATE:
2306	pBusLogic->cbCommandParametersLeft = 1;
2307	break;
2308	case BUSLOGICCOMMAND_FETCH_HOST_ADAPTER_LOCAL_RAM:
2309	pBusLogic->cbCommandParametersLeft = 2;
2310	break;
2311	case BUSLOGICCOMMAND_READ_BUSMASTER_CHIP_FIFO:
2312	case BUSLOGICCOMMAND_WRITE_BUSMASTER_CHIP_FIFO:
2313	pBusLogic->cbCommandParametersLeft = 3;
2314	break;
2315	case BUSLOGICCOMMAND_INITIALIZE_MAILBOX:
2316	pBusLogic->cbCommandParametersLeft = sizeof(RequestInitMbx);
2317	break;
2318	case BUSLOGICCOMMAND_INITIALIZE_EXTENDED_MAILBOX:
2319	pBusLogic->cbCommandParametersLeft = sizeof(RequestInitializeExtendedMailbox);
2320	break;
2321	case BUSLOGICCOMMAND_SET_ADAPTER_OPTIONS:
2322	/* There must be at least one byte following this command. */
2323	pBusLogic->cbCommandParametersLeft = 1;
2324	break;
2325	case BUSLOGICCOMMAND_EXECUTE_SCSI_COMMAND:
2326	/* 12 bytes + variable-length CDB. */
2327	pBusLogic->cbCommandParametersLeft = 12;
2328	break;
2329	case BUSLOGICCOMMAND_EXT_BIOS_INFO:
2330	case BUSLOGICCOMMAND_UNLOCK_MAILBOX:
2331	/* Invalid commands. */
2332	pBusLogic->cbCommandParametersLeft = 0;
2333	break;
2334	case BUSLOGICCOMMAND_EXECUTE_MAILBOX_COMMAND: /* Should not come here anymore. */
2335	default:
2336	AssertMsgFailed(("Invalid operation code %#x\n", uVal));
2337	}
2338	}
2339	else
2340	{
2341	#ifndef IN_RING3
2342	/* This command must be executed in R3 as it rehooks the ISA I/O port. */
2343	if (pBusLogic->uOperationCode == BUSLOGICCOMMAND_MODIFY_IO_ADDRESS)
2344	{
2345	rc = VINF_IOM_R3_IOPORT_WRITE;
2346	break;
2347	}
2348	#endif
2349	/*
2350	* The real adapter would set the Command register busy bit in the status register.
2351	* The guest has to wait until it is unset.
2352	* We don't need to do it because the guest does not continue execution while we are in this
2353	* function.
2354	*/
2355	pBusLogic->aCommandBuffer[pBusLogic->iParameter] = uVal;
2356	pBusLogic->iParameter++;
2357	pBusLogic->cbCommandParametersLeft--;
2358	}
2359
2360	/* Start execution of command if there are no parameters left. */
2361	if (!pBusLogic->cbCommandParametersLeft)
2362	{
2363	rc = buslogicProcessCommand(pBusLogic);
2364	AssertMsgRC(rc, ("Processing command failed rc=%Rrc\n", rc));
2365	}
2366	break;
2367	}
2368
2369	/* On BusLogic adapters, the interrupt and geometry registers are R/W.
2370	* That is different from Adaptec 154x where those are read only.
2371	*/
2372	case BUSLOGIC_REGISTER_INTERRUPT:
2373	pBusLogic->regInterrupt = uVal;
2374	break;
2375
2376	case BUSLOGIC_REGISTER_GEOMETRY:
2377	pBusLogic->regGeometry = uVal;
2378	break;
2379
2380	default:
2381	AssertMsgFailed(("Register not available\n"));
2382	rc = VERR_IOM_IOPORT_UNUSED;
2383	}
2384
2385	return rc;
2386	}
2387
2388	/**
2389	* Memory mapped I/O Handler for read operations.
2390	*
2391	* @returns VBox status code.
2392	*
2393	* @param pDevIns The device instance.
2394	* @param pvUser User argument.
2395	* @param GCPhysAddr Physical address (in GC) where the read starts.
2396	* @param pv Where to store the result.
2397	* @param cb Number of bytes read.
2398	*/
2399	PDMBOTHCBDECL(int) buslogicMMIORead(PPDMDEVINS pDevIns, void pvUser, RTGCPHYS GCPhysAddr, void pv, unsigned cb)
2400	{
2401	/* the linux driver does not make use of the MMIO area. */
2402	AssertMsgFailed(("MMIO Read\n"));
2403	return VINF_SUCCESS;
2404	}
2405
2406	/**
2407	* Memory mapped I/O Handler for write operations.
2408	*
2409	* @returns VBox status code.
2410	*
2411	* @param pDevIns The device instance.
2412	* @param pvUser User argument.
2413	* @param GCPhysAddr Physical address (in GC) where the read starts.
2414	* @param pv Where to fetch the result.
2415	* @param cb Number of bytes to write.
2416	*/
2417	PDMBOTHCBDECL(int) buslogicMMIOWrite(PPDMDEVINS pDevIns, void pvUser, RTGCPHYS GCPhysAddr, void const pv, unsigned cb)
2418	{
2419	/* the linux driver does not make use of the MMIO area. */
2420	AssertMsgFailed(("MMIO Write\n"));
2421	return VINF_SUCCESS;
2422	}
2423
2424	/**
2425	* Port I/O Handler for IN operations.
2426	*
2427	* @returns VBox status code.
2428	*
2429	* @param pDevIns The device instance.
2430	* @param pvUser User argument.
2431	* @param uPort Port number used for the IN operation.
2432	* @param pu32 Where to store the result.
2433	* @param cb Number of bytes read.
2434	*/
2435	PDMBOTHCBDECL(int) buslogicIOPortRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
2436	{
2437	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2438	unsigned iRegister = Port % 4;
2439
2440	Assert(cb == 1);
2441
2442	return buslogicRegisterRead(pBusLogic, iRegister, pu32);
2443	}
2444
2445	/**
2446	* Port I/O Handler for OUT operations.
2447	*
2448	* @returns VBox status code.
2449	*
2450	* @param pDevIns The device instance.
2451	* @param pvUser User argument.
2452	* @param uPort Port number used for the IN operation.
2453	* @param u32 The value to output.
2454	* @param cb The value size in bytes.
2455	*/
2456	PDMBOTHCBDECL(int) buslogicIOPortWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
2457	{
2458	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2459	int rc = VINF_SUCCESS;
2460	unsigned iRegister = Port % 4;
2461	uint8_t uVal = (uint8_t)u32;
2462
2463	Assert(cb == 1);
2464
2465	rc = buslogicRegisterWrite(pBusLogic, iRegister, (uint8_t)uVal);
2466
2467	Log2(("#%d %s: pvUser=%#p cb=%d u32=%#x Port=%#x rc=%Rrc\n",
2468	pDevIns->iInstance, __FUNCTION__, pvUser, cb, u32, Port, rc));
2469
2470	return rc;
2471	}
2472
2473	#ifdef IN_RING3
2474
2475	static int buslogicR3PrepareBIOSSCSIRequest(PBUSLOGIC pBusLogic)
2476	{
2477	int rc;
2478	PBUSLOGICTASKSTATE pTaskState;
2479	uint32_t uTargetDevice;
2480
2481	rc = RTMemCacheAllocEx(pBusLogic->hTaskCache, (void **)&pTaskState);
2482	AssertMsgRCReturn(rc, ("Getting task from cache failed rc=%Rrc\n", rc), rc);
2483
2484	pTaskState->fBIOS = true;
2485
2486	rc = vboxscsiSetupRequest(&pBusLogic->VBoxSCSI, &pTaskState->PDMScsiRequest, &uTargetDevice);
2487	AssertMsgRCReturn(rc, ("Setting up SCSI request failed rc=%Rrc\n", rc), rc);
2488
2489	pTaskState->PDMScsiRequest.pvUser = pTaskState;
2490
2491	pTaskState->CTX_SUFF(pTargetDevice) = &pBusLogic->aDeviceStates[uTargetDevice];
2492
2493	if (!pTaskState->CTX_SUFF(pTargetDevice)->fPresent)
2494	{
2495	/* Device is not present. */
2496	AssertMsg(pTaskState->PDMScsiRequest.pbCDB[0] == SCSI_INQUIRY,
2497	("Device is not present but command is not inquiry\n"));
2498
2499	SCSIINQUIRYDATA ScsiInquiryData;
2500
2501	memset(&ScsiInquiryData, 0, sizeof(SCSIINQUIRYDATA));
2502	ScsiInquiryData.u5PeripheralDeviceType = SCSI_INQUIRY_DATA_PERIPHERAL_DEVICE_TYPE_UNKNOWN;
2503	ScsiInquiryData.u3PeripheralQualifier = SCSI_INQUIRY_DATA_PERIPHERAL_QUALIFIER_NOT_CONNECTED_NOT_SUPPORTED;
2504
2505	memcpy(pBusLogic->VBoxSCSI.pbBuf, &ScsiInquiryData, 5);
2506
2507	rc = vboxscsiRequestFinished(&pBusLogic->VBoxSCSI, &pTaskState->PDMScsiRequest, SCSI_STATUS_OK);
2508	AssertMsgRCReturn(rc, ("Finishing BIOS SCSI request failed rc=%Rrc\n", rc), rc);
2509
2510	RTMemCacheFree(pBusLogic->hTaskCache, pTaskState);
2511	}
2512	else
2513	{
2514	LogFlowFunc(("before increment %u\n", pTaskState->CTX_SUFF(pTargetDevice)->cOutstandingRequests));
2515	ASMAtomicIncU32(&pTaskState->CTX_SUFF(pTargetDevice)->cOutstandingRequests);
2516	LogFlowFunc(("after increment %u\n", pTaskState->CTX_SUFF(pTargetDevice)->cOutstandingRequests));
2517
2518	rc = pTaskState->CTX_SUFF(pTargetDevice)->pDrvSCSIConnector->pfnSCSIRequestSend(pTaskState->CTX_SUFF(pTargetDevice)->pDrvSCSIConnector,
2519	&pTaskState->PDMScsiRequest);
2520	AssertMsgRC(rc, ("Sending request to SCSI layer failed rc=%Rrc\n", rc));
2521	}
2522
2523	return rc;
2524	}
2525
2526
2527	/**
2528	* Port I/O Handler for IN operations - BIOS port.
2529	*
2530	* @returns VBox status code.
2531	*
2532	* @param pDevIns The device instance.
2533	* @param pvUser User argument.
2534	* @param uPort Port number used for the IN operation.
2535	* @param pu32 Where to store the result.
2536	* @param cb Number of bytes read.
2537	*/
2538	static DECLCALLBACK(int) buslogicR3BiosIoPortRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
2539	{
2540	int rc;
2541	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2542
2543	Assert(cb == 1);
2544
2545	rc = vboxscsiReadRegister(&pBusLogic->VBoxSCSI, (Port - BUSLOGIC_BIOS_IO_PORT), pu32);
2546
2547	//Log2(("%s: pu32=%p:{%.*Rhxs} iRegister=%d rc=%Rrc\n",
2548	// __FUNCTION__, pu32, 1, pu32, (Port - BUSLOGIC_BIOS_IO_PORT), rc));
2549
2550	return rc;
2551	}
2552
2553	/**
2554	* Port I/O Handler for OUT operations - BIOS port.
2555	*
2556	* @returns VBox status code.
2557	*
2558	* @param pDevIns The device instance.
2559	* @param pvUser User argument.
2560	* @param uPort Port number used for the IN operation.
2561	* @param u32 The value to output.
2562	* @param cb The value size in bytes.
2563	*/
2564	static DECLCALLBACK(int) buslogicR3BiosIoPortWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
2565	{
2566	int rc;
2567	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2568
2569	Log2(("#%d %s: pvUser=%#p cb=%d u32=%#x Port=%#x\n",
2570	pDevIns->iInstance, __FUNCTION__, pvUser, cb, u32, Port));
2571
2572	/*
2573	* If there is already a request form the BIOS pending ignore this write
2574	* because it should not happen.
2575	*/
2576	if (ASMAtomicReadBool(&pThis->fBiosReqPending))
2577	return VINF_SUCCESS;
2578
2579	Assert(cb == 1);
2580
2581	rc = vboxscsiWriteRegister(&pThis->VBoxSCSI, (Port - BUSLOGIC_BIOS_IO_PORT), (uint8_t)u32);
2582	if (rc == VERR_MORE_DATA)
2583	{
2584	ASMAtomicXchgBool(&pThis->fBiosReqPending, true);
2585	/* Send a notifier to the PDM queue that there are pending requests. */
2586	PPDMQUEUEITEMCORE pItem = PDMQueueAlloc(pThis->CTX_SUFF(pNotifierQueue));
2587	AssertMsg(pItem, ("Allocating item for queue failed\n"));
2588	PDMQueueInsert(pThis->CTX_SUFF(pNotifierQueue), (PPDMQUEUEITEMCORE)pItem);
2589	rc = VINF_SUCCESS;
2590	}
2591	else if (RT_FAILURE(rc))
2592	AssertMsgFailed(("Writing BIOS register failed %Rrc\n", rc));
2593
2594	return VINF_SUCCESS;
2595	}
2596
2597	/**
2598	* Port I/O Handler for primary port range OUT string operations.
2599	* @see FNIOMIOPORTOUTSTRING for details.
2600	*/
2601	static DECLCALLBACK(int) buslogicR3BiosIoPortWriteStr(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port,
2602	uint8_t const pbSrc, uint32_t pcTransfers, unsigned cb)
2603	{
2604	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2605	Log2(("#%d %s: pvUser=%#p cb=%d Port=%#x\n", pDevIns->iInstance, __FUNCTION__, pvUser, cb, Port));
2606
2607	/*
2608	* If there is already a request form the BIOS pending ignore this write
2609	* because it should not happen.
2610	*/
2611	if (ASMAtomicReadBool(&pThis->fBiosReqPending))
2612	return VINF_SUCCESS;
2613
2614	int rc = vboxscsiWriteString(pDevIns, &pThis->VBoxSCSI, (Port - BUSLOGIC_BIOS_IO_PORT), pbSrc, pcTransfers, cb);
2615	if (rc == VERR_MORE_DATA)
2616	{
2617	ASMAtomicXchgBool(&pThis->fBiosReqPending, true);
2618	/* Send a notifier to the PDM queue that there are pending requests. */
2619	PPDMQUEUEITEMCORE pItem = PDMQueueAlloc(pThis->CTX_SUFF(pNotifierQueue));
2620	AssertMsg(pItem, ("Allocating item for queue failed\n"));
2621	PDMQueueInsert(pThis->CTX_SUFF(pNotifierQueue), (PPDMQUEUEITEMCORE)pItem);
2622	}
2623	else if (RT_FAILURE(rc))
2624	AssertMsgFailed(("Writing BIOS register failed %Rrc\n", rc));
2625
2626	return VINF_SUCCESS;
2627	}
2628
2629	/**
2630	* Port I/O Handler for primary port range IN string operations.
2631	* @see FNIOMIOPORTINSTRING for details.
2632	*/
2633	static DECLCALLBACK(int) buslogicR3BiosIoPortReadStr(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port,
2634	uint8_t pbDst, uint32_t pcTransfers, unsigned cb)
2635	{
2636	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2637	LogFlowFunc(("#%d %s: pvUser=%#p cb=%d Port=%#x\n", pDevIns->iInstance, __FUNCTION__, pvUser, cb, Port));
2638
2639	return vboxscsiReadString(pDevIns, &pBusLogic->VBoxSCSI, (Port - BUSLOGIC_BIOS_IO_PORT),
2640	pbDst, pcTransfers, cb);
2641	}
2642
2643	/**
2644	* Update the ISA I/O range.
2645	*
2646	* @returns nothing.
2647	* @param pBusLogic Pointer to the BusLogic device instance.
2648	* @param uBaseCode Encoded ISA I/O base; only low 3 bits are used.
2649	*/
2650	static int buslogicR3RegisterISARange(PBUSLOGIC pBusLogic, uint8_t uBaseCode)
2651	{
2652	uint8_t uCode = uBaseCode & MAX_ISA_BASE;
2653	uint16_t uNewBase = g_aISABases[uCode];
2654	int rc = VINF_SUCCESS;
2655
2656	LogFlowFunc(("ISA I/O code %02X, new base %X\n", uBaseCode, uNewBase));
2657
2658	/* Check if the same port range is already registered. */
2659	if (uNewBase != pBusLogic->IOISABase)
2660	{
2661	/* Unregister the old range, if any. */
2662	if (pBusLogic->IOISABase)
2663	rc = PDMDevHlpIOPortDeregister(pBusLogic->CTX_SUFF(pDevIns), pBusLogic->IOISABase, 4);
2664
2665	if (RT_SUCCESS(rc))
2666	{
2667	pBusLogic->IOISABase = 0; /* First mark as unregistered. */
2668	pBusLogic->uISABaseCode = ISA_BASE_DISABLED;
2669
2670	if (uNewBase)
2671	{
2672	/* Register the new range if requested. */
2673	rc = PDMDevHlpIOPortRegister(pBusLogic->CTX_SUFF(pDevIns), uNewBase, 4, NULL,
2674	buslogicIOPortWrite, buslogicIOPortRead,
2675	NULL, NULL,
2676	"BusLogic ISA");
2677	if (RT_SUCCESS(rc))
2678	{
2679	pBusLogic->IOISABase = uNewBase;
2680	pBusLogic->uISABaseCode = uCode;
2681	}
2682	}
2683	}
2684	if (RT_SUCCESS(rc))
2685	{
2686	if (uNewBase)
2687	{
2688	Log(("ISA I/O base: %x\n", uNewBase));
2689	LogRel(("BusLogic: ISA I/O base: %x\n", uNewBase));
2690	}
2691	else
2692	{
2693	Log(("Disabling ISA I/O ports.\n"));
2694	LogRel(("BusLogic: ISA I/O disabled\n"));
2695	}
2696	}
2697
2698	}
2699	return rc;
2700	}
2701
2702	static void buslogicR3WarningDiskFull(PPDMDEVINS pDevIns)
2703	{
2704	int rc;
2705	LogRel(("BusLogic#%d: Host disk full\n", pDevIns->iInstance));
2706	rc = PDMDevHlpVMSetRuntimeError(pDevIns, VMSETRTERR_FLAGS_SUSPEND \| VMSETRTERR_FLAGS_NO_WAIT, "DevBusLogic_DISKFULL",
2707	N_("Host system reported disk full. VM execution is suspended. You can resume after freeing some space"));
2708	AssertRC(rc);
2709	}
2710
2711	static void buslogicR3WarningFileTooBig(PPDMDEVINS pDevIns)
2712	{
2713	int rc;
2714	LogRel(("BusLogic#%d: File too big\n", pDevIns->iInstance));
2715	rc = PDMDevHlpVMSetRuntimeError(pDevIns, VMSETRTERR_FLAGS_SUSPEND \| VMSETRTERR_FLAGS_NO_WAIT, "DevBusLogic_FILETOOBIG",
2716	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"));
2717	AssertRC(rc);
2718	}
2719
2720	static void buslogicR3WarningISCSI(PPDMDEVINS pDevIns)
2721	{
2722	int rc;
2723	LogRel(("BusLogic#%d: iSCSI target unavailable\n", pDevIns->iInstance));
2724	rc = PDMDevHlpVMSetRuntimeError(pDevIns, VMSETRTERR_FLAGS_SUSPEND \| VMSETRTERR_FLAGS_NO_WAIT, "DevBusLogic_ISCSIDOWN",
2725	N_("The iSCSI target has stopped responding. VM execution is suspended. You can resume when it is available again"));
2726	AssertRC(rc);
2727	}
2728
2729	static void buslogicR3WarningUnknown(PPDMDEVINS pDevIns, int rc)
2730	{
2731	int rc2;
2732	LogRel(("BusLogic#%d: Unknown but recoverable error has occurred (rc=%Rrc)\n", pDevIns->iInstance, rc));
2733	rc2 = PDMDevHlpVMSetRuntimeError(pDevIns, VMSETRTERR_FLAGS_SUSPEND \| VMSETRTERR_FLAGS_NO_WAIT, "DevBusLogic_UNKNOWN",
2734	N_("An unknown but recoverable I/O error has occurred (rc=%Rrc). VM execution is suspended. You can resume when the error is fixed"), rc);
2735	AssertRC(rc2);
2736	}
2737
2738	static void buslogicR3RedoSetWarning(PBUSLOGIC pThis, int rc)
2739	{
2740	if (rc == VERR_DISK_FULL)
2741	buslogicR3WarningDiskFull(pThis->CTX_SUFF(pDevIns));
2742	else if (rc == VERR_FILE_TOO_BIG)
2743	buslogicR3WarningFileTooBig(pThis->CTX_SUFF(pDevIns));
2744	else if (rc == VERR_BROKEN_PIPE \|\| rc == VERR_NET_CONNECTION_REFUSED)
2745	{
2746	/* iSCSI connection abort (first error) or failure to reestablish
2747	* connection (second error). Pause VM. On resume we'll retry. */
2748	buslogicR3WarningISCSI(pThis->CTX_SUFF(pDevIns));
2749	}
2750	else if (rc != VERR_VD_DEK_MISSING)
2751	buslogicR3WarningUnknown(pThis->CTX_SUFF(pDevIns), rc);
2752	}
2753
2754
2755	static DECLCALLBACK(int) buslogicR3MmioMap(PPCIDEVICE pPciDev, /unsigned/ int iRegion,
2756	RTGCPHYS GCPhysAddress, uint32_t cb, PCIADDRESSSPACE enmType)
2757	{
2758	PPDMDEVINS pDevIns = pPciDev->pDevIns;
2759	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2760	int rc = VINF_SUCCESS;
2761
2762	Log2(("%s: registering MMIO area at GCPhysAddr=%RGp cb=%u\n", __FUNCTION__, GCPhysAddress, cb));
2763
2764	Assert(cb >= 32);
2765
2766	if (enmType == PCI_ADDRESS_SPACE_MEM)
2767	{
2768	/* We use the assigned size here, because we currently only support page aligned MMIO ranges. */
2769	rc = PDMDevHlpMMIORegister(pDevIns, GCPhysAddress, cb, NULL /pvUser/,
2770	IOMMMIO_FLAGS_READ_PASSTHRU \| IOMMMIO_FLAGS_WRITE_PASSTHRU,
2771	buslogicMMIOWrite, buslogicMMIORead, "BusLogic MMIO");
2772	if (RT_FAILURE(rc))
2773	return rc;
2774
2775	if (pThis->fR0Enabled)
2776	{
2777	rc = PDMDevHlpMMIORegisterR0(pDevIns, GCPhysAddress, cb, NIL_RTR0PTR /pvUser/,
2778	"buslogicMMIOWrite", "buslogicMMIORead");
2779	if (RT_FAILURE(rc))
2780	return rc;
2781	}
2782
2783	if (pThis->fGCEnabled)
2784	{
2785	rc = PDMDevHlpMMIORegisterRC(pDevIns, GCPhysAddress, cb, NIL_RTRCPTR /pvUser/,
2786	"buslogicMMIOWrite", "buslogicMMIORead");
2787	if (RT_FAILURE(rc))
2788	return rc;
2789	}
2790
2791	pThis->MMIOBase = GCPhysAddress;
2792	}
2793	else if (enmType == PCI_ADDRESS_SPACE_IO)
2794	{
2795	rc = PDMDevHlpIOPortRegister(pDevIns, (RTIOPORT)GCPhysAddress, 32,
2796	NULL, buslogicIOPortWrite, buslogicIOPortRead, NULL, NULL, "BusLogic PCI");
2797	if (RT_FAILURE(rc))
2798	return rc;
2799
2800	if (pThis->fR0Enabled)
2801	{
2802	rc = PDMDevHlpIOPortRegisterR0(pDevIns, (RTIOPORT)GCPhysAddress, 32,
2803	0, "buslogicIOPortWrite", "buslogicIOPortRead", NULL, NULL, "BusLogic PCI");
2804	if (RT_FAILURE(rc))
2805	return rc;
2806	}
2807
2808	if (pThis->fGCEnabled)
2809	{
2810	rc = PDMDevHlpIOPortRegisterRC(pDevIns, (RTIOPORT)GCPhysAddress, 32,
2811	0, "buslogicIOPortWrite", "buslogicIOPortRead", NULL, NULL, "BusLogic PCI");
2812	if (RT_FAILURE(rc))
2813	return rc;
2814	}
2815
2816	pThis->IOPortBase = (RTIOPORT)GCPhysAddress;
2817	}
2818	else
2819	AssertMsgFailed(("Invalid enmType=%d\n", enmType));
2820
2821	return rc;
2822	}
2823
2824	static DECLCALLBACK(int) buslogicR3DeviceSCSIRequestCompleted(PPDMISCSIPORT pInterface, PPDMSCSIREQUEST pSCSIRequest,
2825	int rcCompletion, bool fRedo, int rcReq)
2826	{
2827	int rc;
2828	PBUSLOGICTASKSTATE pTaskState = (PBUSLOGICTASKSTATE)pSCSIRequest->pvUser;
2829	PBUSLOGICDEVICE pBusLogicDevice = pTaskState->CTX_SUFF(pTargetDevice);
2830	PBUSLOGIC pBusLogic = pBusLogicDevice->CTX_SUFF(pBusLogic);
2831
2832	LogFlowFunc(("before decrement %u\n", pBusLogicDevice->cOutstandingRequests));
2833	ASMAtomicDecU32(&pBusLogicDevice->cOutstandingRequests);
2834	LogFlowFunc(("after decrement %u\n", pBusLogicDevice->cOutstandingRequests));
2835
2836	if (fRedo)
2837	{
2838	if (!pTaskState->fBIOS)
2839	{
2840	buslogicR3DataBufferFree(pTaskState);
2841
2842	if (pTaskState->pbSenseBuffer)
2843	buslogicR3SenseBufferFree(pTaskState, false /* fCopy */);
2844	}
2845
2846	/* Add to the list. */
2847	do
2848	{
2849	pTaskState->pRedoNext = ASMAtomicReadPtrT(&pBusLogic->pTasksRedoHead, PBUSLOGICTASKSTATE);
2850	} while (!ASMAtomicCmpXchgPtr(&pBusLogic->pTasksRedoHead, pTaskState, pTaskState->pRedoNext));
2851
2852	/* Suspend the VM if not done already. */
2853	if (!ASMAtomicXchgBool(&pBusLogic->fRedo, true))
2854	buslogicR3RedoSetWarning(pBusLogic, rcReq);
2855	}
2856	else
2857	{
2858	if (pTaskState->fBIOS)
2859	{
2860	rc = vboxscsiRequestFinished(&pBusLogic->VBoxSCSI, pSCSIRequest, rcCompletion);
2861	AssertMsgRC(rc, ("Finishing BIOS SCSI request failed rc=%Rrc\n", rc));
2862	}
2863	else
2864	{
2865	buslogicR3DataBufferFree(pTaskState);
2866
2867	if (pTaskState->pbSenseBuffer)
2868	buslogicR3SenseBufferFree(pTaskState, (rcCompletion != SCSI_STATUS_OK));
2869
2870	if (rcCompletion == SCSI_STATUS_OK)
2871	buslogicR3SendIncomingMailbox(pBusLogic, pTaskState,
2872	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_CMD_COMPLETED,
2873	BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS_OPERATION_GOOD,
2874	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_WITHOUT_ERROR);
2875	else if (rcCompletion == SCSI_STATUS_CHECK_CONDITION)
2876	buslogicR3SendIncomingMailbox(pBusLogic, pTaskState,
2877	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_CMD_COMPLETED,
2878	BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS_CHECK_CONDITION,
2879	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_WITH_ERROR);
2880	else
2881	AssertMsgFailed(("invalid completion status %d\n", rcCompletion));
2882	}
2883	#ifdef LOG_ENABLED
2884	buslogicR3DumpCCBInfo(&pTaskState->CommandControlBlockGuest, pTaskState->fIs24Bit);
2885	#endif
2886
2887	/* Remove task from the cache. */
2888	RTMemCacheFree(pBusLogic->hTaskCache, pTaskState);
2889	}
2890
2891	if (pBusLogicDevice->cOutstandingRequests == 0 && pBusLogic->fSignalIdle)
2892	PDMDevHlpAsyncNotificationCompleted(pBusLogic->pDevInsR3);
2893
2894	return VINF_SUCCESS;
2895	}
2896
2897	static DECLCALLBACK(int) buslogicR3QueryDeviceLocation(PPDMISCSIPORT pInterface, const char **ppcszController,
2898	uint32_t piInstance, uint32_t piLUN)
2899	{
2900	PBUSLOGICDEVICE pBusLogicDevice = PDMISCSIPORT_2_PBUSLOGICDEVICE(pInterface);
2901	PPDMDEVINS pDevIns = pBusLogicDevice->CTX_SUFF(pBusLogic)->CTX_SUFF(pDevIns);
2902
2903	AssertPtrReturn(ppcszController, VERR_INVALID_POINTER);
2904	AssertPtrReturn(piInstance, VERR_INVALID_POINTER);
2905	AssertPtrReturn(piLUN, VERR_INVALID_POINTER);
2906
2907	*ppcszController = pDevIns->pReg->szName;
2908	*piInstance = pDevIns->iInstance;
2909	*piLUN = pBusLogicDevice->iLUN;
2910
2911	return VINF_SUCCESS;
2912	}
2913
2914	static int buslogicR3DeviceSCSIRequestSetup(PBUSLOGIC pBusLogic, PBUSLOGICTASKSTATE pTaskState)
2915	{
2916	int rc = VINF_SUCCESS;
2917	uint8_t uTargetIdCCB;
2918	PBUSLOGICDEVICE pTargetDevice;
2919
2920	/* Fetch the CCB from guest memory. */
2921	/** @todo How much do we really have to read? */
2922	RTGCPHYS GCPhysAddrCCB = (RTGCPHYS)pTaskState->MailboxGuest.u32PhysAddrCCB;
2923	PDMDevHlpPhysRead(pBusLogic->CTX_SUFF(pDevIns), GCPhysAddrCCB,
2924	&pTaskState->CommandControlBlockGuest, sizeof(CCB32));
2925
2926	uTargetIdCCB = pTaskState->fIs24Bit ? pTaskState->CommandControlBlockGuest.o.uTargetId : pTaskState->CommandControlBlockGuest.n.uTargetId;
2927	if (RT_LIKELY(uTargetIdCCB < RT_ELEMENTS(pBusLogic->aDeviceStates)))
2928	{
2929	pTargetDevice = &pBusLogic->aDeviceStates[uTargetIdCCB];
2930	pTaskState->CTX_SUFF(pTargetDevice) = pTargetDevice;
2931
2932	#ifdef LOG_ENABLED
2933	buslogicR3DumpCCBInfo(&pTaskState->CommandControlBlockGuest, pTaskState->fIs24Bit);
2934	#endif
2935
2936	/* Alloc required buffers. */
2937	rc = buslogicR3DataBufferAlloc(pTaskState);
2938	AssertMsgRC(rc, ("Alloc failed rc=%Rrc\n", rc));
2939
2940	rc = buslogicR3SenseBufferAlloc(pTaskState);
2941	AssertMsgRC(rc, ("Mapping sense buffer failed rc=%Rrc\n", rc));
2942
2943	/* Check if device is present on bus. If not return error immediately and don't process this further. */
2944	if (!pBusLogic->aDeviceStates[uTargetIdCCB].fPresent)
2945	{
2946	buslogicR3DataBufferFree(pTaskState);
2947
2948	if (pTaskState->pbSenseBuffer)
2949	buslogicR3SenseBufferFree(pTaskState, true);
2950
2951	buslogicR3SendIncomingMailbox(pBusLogic, pTaskState,
2952	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_SCSI_SELECTION_TIMEOUT,
2953	BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS_OPERATION_GOOD,
2954	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_WITH_ERROR);
2955
2956	RTMemCacheFree(pBusLogic->hTaskCache, pTaskState);
2957	}
2958	else
2959	{
2960	/* Setup SCSI request. */
2961	pTaskState->PDMScsiRequest.uLogicalUnit = pTaskState->fIs24Bit ? pTaskState->CommandControlBlockGuest.o.uLogicalUnit
2962	: pTaskState->CommandControlBlockGuest.n.uLogicalUnit;
2963
2964	if (pTaskState->CommandControlBlockGuest.c.uDataDirection == BUSLOGIC_CCB_DIRECTION_UNKNOWN)
2965	pTaskState->PDMScsiRequest.uDataDirection = PDMSCSIREQUESTTXDIR_UNKNOWN;
2966	else if (pTaskState->CommandControlBlockGuest.c.uDataDirection == BUSLOGIC_CCB_DIRECTION_IN)
2967	pTaskState->PDMScsiRequest.uDataDirection = PDMSCSIREQUESTTXDIR_FROM_DEVICE;
2968	else if (pTaskState->CommandControlBlockGuest.c.uDataDirection == BUSLOGIC_CCB_DIRECTION_OUT)
2969	pTaskState->PDMScsiRequest.uDataDirection = PDMSCSIREQUESTTXDIR_TO_DEVICE;
2970	else if (pTaskState->CommandControlBlockGuest.c.uDataDirection == BUSLOGIC_CCB_DIRECTION_NO_DATA)
2971	pTaskState->PDMScsiRequest.uDataDirection = PDMSCSIREQUESTTXDIR_NONE;
2972	else
2973	AssertMsgFailed(("Invalid data direction type %d\n", pTaskState->CommandControlBlockGuest.c.uDataDirection));
2974
2975	pTaskState->PDMScsiRequest.cbCDB = pTaskState->CommandControlBlockGuest.c.cbCDB;
2976	pTaskState->PDMScsiRequest.pbCDB = pTaskState->CommandControlBlockGuest.c.abCDB;
2977	if (pTaskState->DataSeg.cbSeg)
2978	{
2979	pTaskState->PDMScsiRequest.cbScatterGather = pTaskState->DataSeg.cbSeg;
2980	pTaskState->PDMScsiRequest.cScatterGatherEntries = 1;
2981	pTaskState->PDMScsiRequest.paScatterGatherHead = &pTaskState->DataSeg;
2982	}
2983	else
2984	{
2985	pTaskState->PDMScsiRequest.cbScatterGather = 0;
2986	pTaskState->PDMScsiRequest.cScatterGatherEntries = 0;
2987	pTaskState->PDMScsiRequest.paScatterGatherHead = NULL;
2988	}
2989	pTaskState->PDMScsiRequest.cbSenseBuffer = buslogicR3ConvertSenseBufferLength(pTaskState->CommandControlBlockGuest.c.cbSenseData);
2990	pTaskState->PDMScsiRequest.pbSenseBuffer = pTaskState->pbSenseBuffer;
2991	pTaskState->PDMScsiRequest.pvUser = pTaskState;
2992
2993	ASMAtomicIncU32(&pTargetDevice->cOutstandingRequests);
2994	rc = pTargetDevice->pDrvSCSIConnector->pfnSCSIRequestSend(pTargetDevice->pDrvSCSIConnector, &pTaskState->PDMScsiRequest);
2995	AssertMsgRC(rc, ("Sending request to SCSI layer failed rc=%Rrc\n", rc));
2996	}
2997	}
2998	else
2999	{
3000	RTMemCacheFree(pBusLogic->hTaskCache, pTaskState);
3001
3002	buslogicR3SendIncomingMailbox(pBusLogic, pTaskState,
3003	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_INVALID_COMMAND_PARAMETER,
3004	BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS_OPERATION_GOOD,
3005	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_WITH_ERROR);
3006	}
3007
3008	return rc;
3009	}
3010
3011	static int buslogicR3DeviceSCSIRequestAbort(PBUSLOGIC pBusLogic, PBUSLOGICTASKSTATE pTaskState)
3012	{
3013	int rc = VINF_SUCCESS;
3014	uint8_t uTargetIdCCB;
3015	PBUSLOGICDEVICE pTargetDevice;
3016	RTGCPHYS GCPhysAddrCCB = (RTGCPHYS)pTaskState->MailboxGuest.u32PhysAddrCCB;
3017
3018	PDMDevHlpPhysRead(pBusLogic->CTX_SUFF(pDevIns), GCPhysAddrCCB,
3019	&pTaskState->CommandControlBlockGuest, sizeof(CCB32));
3020
3021	uTargetIdCCB = pTaskState->fIs24Bit ? pTaskState->CommandControlBlockGuest.o.uTargetId : pTaskState->CommandControlBlockGuest.n.uTargetId;
3022	if (RT_LIKELY(uTargetIdCCB < RT_ELEMENTS(pBusLogic->aDeviceStates)))
3023	{
3024	pTargetDevice = &pBusLogic->aDeviceStates[uTargetIdCCB];
3025	pTaskState->CTX_SUFF(pTargetDevice) = pTargetDevice;
3026
3027	buslogicR3SendIncomingMailbox(pBusLogic, pTaskState,
3028	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_ABORT_QUEUE_GENERATED,
3029	BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS_OPERATION_GOOD,
3030	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_ABORTED_NOT_FOUND);
3031
3032	RTMemCacheFree(pBusLogic->hTaskCache, pTaskState);
3033	}
3034	else
3035	{
3036	RTMemCacheFree(pBusLogic->hTaskCache, pTaskState);
3037
3038	buslogicR3SendIncomingMailbox(pBusLogic, pTaskState,
3039	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_INVALID_COMMAND_PARAMETER,
3040	BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS_OPERATION_GOOD,
3041	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_WITH_ERROR);
3042	}
3043
3044	return rc;
3045	}
3046
3047	/**
3048	* Read a mailbox from guest memory. Convert 24-bit mailboxes to
3049	* 32-bit format.
3050	*
3051	* @returns Mailbox guest physical address.
3052	* @param pBusLogic Pointer to the BusLogic instance data.
3053	* @param pTaskStat Pointer to the task state being set up.
3054	*/
3055	static RTGCPHYS buslogicR3ReadOutgoingMailbox(PBUSLOGIC pBusLogic, PBUSLOGICTASKSTATE pTaskState)
3056	{
3057	RTGCPHYS GCMailbox;
3058
3059	if (pBusLogic->fMbxIs24Bit)
3060	{
3061	Mailbox24 Mbx24;
3062
3063	GCMailbox = pBusLogic->GCPhysAddrMailboxOutgoingBase + (pBusLogic->uMailboxOutgoingPositionCurrent * sizeof(Mailbox24));
3064	PDMDevHlpPhysRead(pBusLogic->CTX_SUFF(pDevIns), GCMailbox, &Mbx24, sizeof(Mailbox24));
3065	pTaskState->MailboxGuest.u32PhysAddrCCB = ADDR_TO_U32(Mbx24.aPhysAddrCCB);
3066	pTaskState->MailboxGuest.u.out.uActionCode = Mbx24.uCmdState;
3067	}
3068	else
3069	{
3070	GCMailbox = pBusLogic->GCPhysAddrMailboxOutgoingBase + (pBusLogic->uMailboxOutgoingPositionCurrent * sizeof(Mailbox32));
3071	PDMDevHlpPhysRead(pBusLogic->CTX_SUFF(pDevIns), GCMailbox, &pTaskState->MailboxGuest, sizeof(Mailbox32));
3072	}
3073
3074	return GCMailbox;
3075	}
3076
3077	/**
3078	* Read mailbox from the guest and execute command.
3079	*
3080	* @returns VBox status code.
3081	* @param pBusLogic Pointer to the BusLogic instance data.
3082	*/
3083	static int buslogicR3ProcessMailboxNext(PBUSLOGIC pBusLogic)
3084	{
3085	PBUSLOGICTASKSTATE pTaskState = NULL;
3086	RTGCPHYS GCPhysAddrMailboxCurrent;
3087	int rc;
3088
3089	rc = RTMemCacheAllocEx(pBusLogic->hTaskCache, (void **)&pTaskState);
3090	AssertMsgReturn(RT_SUCCESS(rc) && (pTaskState != NULL), ("Failed to get task state from cache\n"), rc);
3091
3092	pTaskState->fBIOS = false;
3093	pTaskState->fIs24Bit = pBusLogic->fMbxIs24Bit;
3094	pTaskState->cbSGEntry = pBusLogic->fMbxIs24Bit ? sizeof(SGE24) : sizeof(SGE32);
3095
3096	if (!pBusLogic->fStrictRoundRobinMode)
3097	{
3098	/* Search for a filled mailbox - stop if we have scanned all mailboxes. */
3099	uint8_t uMailboxPosCur = pBusLogic->uMailboxOutgoingPositionCurrent;
3100
3101	do
3102	{
3103	/* Fetch mailbox from guest memory. */
3104	GCPhysAddrMailboxCurrent = buslogicR3ReadOutgoingMailbox(pBusLogic,pTaskState);
3105
3106	/* Check the next mailbox. */
3107	buslogicR3OutgoingMailboxAdvance(pBusLogic);
3108	} while ( pTaskState->MailboxGuest.u.out.uActionCode == BUSLOGIC_MAILBOX_OUTGOING_ACTION_FREE
3109	&& uMailboxPosCur != pBusLogic->uMailboxOutgoingPositionCurrent);
3110	}
3111	else
3112	{
3113	/* Fetch mailbox from guest memory. */
3114	GCPhysAddrMailboxCurrent = buslogicR3ReadOutgoingMailbox(pBusLogic,pTaskState);
3115	}
3116
3117	/*
3118	* Check if the mailbox is actually loaded.
3119	* It might be possible that the guest notified us without
3120	* a loaded mailbox. Do nothing in that case but leave a
3121	* log entry.
3122	*/
3123	if (pTaskState->MailboxGuest.u.out.uActionCode == BUSLOGIC_MAILBOX_OUTGOING_ACTION_FREE)
3124	{
3125	Log(("No loaded mailbox left\n"));
3126	RTMemCacheFree(pBusLogic->hTaskCache, pTaskState);
3127	return VERR_NO_DATA;
3128	}
3129
3130	LogFlow(("Got loaded mailbox at slot %u, CCB phys %RGp\n", pBusLogic->uMailboxOutgoingPositionCurrent, (RTGCPHYS)pTaskState->MailboxGuest.u32PhysAddrCCB));
3131	#ifdef LOG_ENABLED
3132	buslogicR3DumpMailboxInfo(&pTaskState->MailboxGuest, true);
3133	#endif
3134
3135	/* We got the mailbox, mark it as free in the guest. */
3136	uint8_t uActionCode = BUSLOGIC_MAILBOX_OUTGOING_ACTION_FREE;
3137	unsigned uCodeOffs = pTaskState->fIs24Bit ? RT_OFFSETOF(Mailbox24, uCmdState) : RT_OFFSETOF(Mailbox32, u.out.uActionCode);
3138	PDMDevHlpPCIPhysWrite(pBusLogic->CTX_SUFF(pDevIns), GCPhysAddrMailboxCurrent + uCodeOffs, &uActionCode, sizeof(uActionCode));
3139
3140	if (pTaskState->MailboxGuest.u.out.uActionCode == BUSLOGIC_MAILBOX_OUTGOING_ACTION_START_COMMAND)
3141	rc = buslogicR3DeviceSCSIRequestSetup(pBusLogic, pTaskState);
3142	else if (pTaskState->MailboxGuest.u.out.uActionCode == BUSLOGIC_MAILBOX_OUTGOING_ACTION_ABORT_COMMAND)
3143	{
3144	LogFlow(("Aborting mailbox\n"));
3145	rc = buslogicR3DeviceSCSIRequestAbort(pBusLogic, pTaskState);
3146	}
3147	else
3148	AssertMsgFailed(("Invalid outgoing mailbox action code %u\n", pTaskState->MailboxGuest.u.out.uActionCode));
3149
3150	AssertRC(rc);
3151
3152	/* Advance to the next mailbox. */
3153	if (pBusLogic->fStrictRoundRobinMode)
3154	buslogicR3OutgoingMailboxAdvance(pBusLogic);
3155
3156	return rc;
3157	}
3158
3159	/**
3160	* Transmit queue consumer
3161	* Queue a new async task.
3162	*
3163	* @returns Success indicator.
3164	* If false the item will not be removed and the flushing will stop.
3165	* @param pDevIns The device instance.
3166	* @param pItem The item to consume. Upon return this item will be freed.
3167	*/
3168	static DECLCALLBACK(bool) buslogicR3NotifyQueueConsumer(PPDMDEVINS pDevIns, PPDMQUEUEITEMCORE pItem)
3169	{
3170	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3171
3172	int rc = SUPSemEventSignal(pThis->pSupDrvSession, pThis->hEvtProcess);
3173	AssertRC(rc);
3174
3175	return true;
3176	}
3177
3178	/**
3179	* Kicks the controller to process pending tasks after the VM was resumed
3180	* or loaded from a saved state.
3181	*
3182	* @returns nothing.
3183	* @param pThis The BusLogic device instance.
3184	*/
3185	static void buslogicR3Kick(PBUSLOGIC pThis)
3186	{
3187	if (pThis->fRedo)
3188	{
3189	pThis->fRedo = false;
3190	if (pThis->VBoxSCSI.fBusy)
3191	{
3192
3193	/* The BIOS had a request active when we got suspended. Resume it. */
3194	int rc = buslogicR3PrepareBIOSSCSIRequest(pThis);
3195	AssertRC(rc);
3196	}
3197	else
3198	{
3199	/* Queue all pending tasks again. */
3200	PBUSLOGICTASKSTATE pTaskState = pThis->pTasksRedoHead;
3201
3202	pThis->pTasksRedoHead = NULL;
3203
3204	while (pTaskState)
3205	{
3206	PBUSLOGICTASKSTATE pCur = pTaskState;
3207
3208	int rc = buslogicR3DeviceSCSIRequestSetup(pThis, pCur);
3209	AssertRC(rc);
3210
3211	pTaskState = pTaskState->pRedoNext;
3212	}
3213	}
3214	}
3215	}
3216
3217	/** @callback_method_impl{FNSSMDEVLIVEEXEC} */
3218	static DECLCALLBACK(int) buslogicR3LiveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uPass)
3219	{
3220	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3221
3222	/* Save the device config. */
3223	for (unsigned i = 0; i < RT_ELEMENTS(pThis->aDeviceStates); i++)
3224	SSMR3PutBool(pSSM, pThis->aDeviceStates[i].fPresent);
3225
3226	return VINF_SSM_DONT_CALL_AGAIN;
3227	}
3228
3229	/** @callback_method_impl{FNSSMDEVSAVEEXEC} */
3230	static DECLCALLBACK(int) buslogicR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
3231	{
3232	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3233
3234	/* Every device first. */
3235	for (unsigned i = 0; i < RT_ELEMENTS(pBusLogic->aDeviceStates); i++)
3236	{
3237	PBUSLOGICDEVICE pDevice = &pBusLogic->aDeviceStates[i];
3238
3239	AssertMsg(!pDevice->cOutstandingRequests,
3240	("There are still outstanding requests on this device\n"));
3241	SSMR3PutBool(pSSM, pDevice->fPresent);
3242	SSMR3PutU32(pSSM, pDevice->cOutstandingRequests);
3243	}
3244	/* Now the main device state. */
3245	SSMR3PutU8 (pSSM, pBusLogic->regStatus);
3246	SSMR3PutU8 (pSSM, pBusLogic->regInterrupt);
3247	SSMR3PutU8 (pSSM, pBusLogic->regGeometry);
3248	SSMR3PutMem (pSSM, &pBusLogic->LocalRam, sizeof(pBusLogic->LocalRam));
3249	SSMR3PutU8 (pSSM, pBusLogic->uOperationCode);
3250	SSMR3PutMem (pSSM, &pBusLogic->aCommandBuffer, sizeof(pBusLogic->aCommandBuffer));
3251	SSMR3PutU8 (pSSM, pBusLogic->iParameter);
3252	SSMR3PutU8 (pSSM, pBusLogic->cbCommandParametersLeft);
3253	SSMR3PutBool (pSSM, pBusLogic->fUseLocalRam);
3254	SSMR3PutMem (pSSM, pBusLogic->aReplyBuffer, sizeof(pBusLogic->aReplyBuffer));
3255	SSMR3PutU8 (pSSM, pBusLogic->iReply);
3256	SSMR3PutU8 (pSSM, pBusLogic->cbReplyParametersLeft);
3257	SSMR3PutBool (pSSM, pBusLogic->fIRQEnabled);
3258	SSMR3PutU8 (pSSM, pBusLogic->uISABaseCode);
3259	SSMR3PutU32 (pSSM, pBusLogic->cMailbox);
3260	SSMR3PutBool (pSSM, pBusLogic->fMbxIs24Bit);
3261	SSMR3PutGCPhys(pSSM, pBusLogic->GCPhysAddrMailboxOutgoingBase);
3262	SSMR3PutU32 (pSSM, pBusLogic->uMailboxOutgoingPositionCurrent);
3263	SSMR3PutU32 (pSSM, pBusLogic->cMailboxesReady);
3264	SSMR3PutBool (pSSM, pBusLogic->fNotificationSent);
3265	SSMR3PutGCPhys(pSSM, pBusLogic->GCPhysAddrMailboxIncomingBase);
3266	SSMR3PutU32 (pSSM, pBusLogic->uMailboxIncomingPositionCurrent);
3267	SSMR3PutBool (pSSM, pBusLogic->fStrictRoundRobinMode);
3268	SSMR3PutBool (pSSM, pBusLogic->fExtendedLunCCBFormat);
3269
3270	vboxscsiR3SaveExec(&pBusLogic->VBoxSCSI, pSSM);
3271
3272	/*
3273	* Save the physical addresses of the command control blocks of still pending tasks.
3274	* They are processed again on resume.
3275	*
3276	* The number of pending tasks needs to be determined first.
3277	*/
3278	uint32_t cTasks = 0;
3279
3280	PBUSLOGICTASKSTATE pTaskState = pBusLogic->pTasksRedoHead;
3281	if (pBusLogic->fRedo)
3282	{
3283	while (pTaskState)
3284	{
3285	cTasks++;
3286	pTaskState = pTaskState->pRedoNext;
3287	}
3288	}
3289	SSMR3PutU32(pSSM, cTasks);
3290
3291	/* Write the address of every task now. */
3292	pTaskState = pBusLogic->pTasksRedoHead;
3293	while (pTaskState)
3294	{
3295	SSMR3PutU32(pSSM, pTaskState->MailboxGuest.u32PhysAddrCCB);
3296	pTaskState = pTaskState->pRedoNext;
3297	}
3298
3299	return SSMR3PutU32(pSSM, ~0);
3300	}
3301
3302	/** @callback_method_impl{FNSSMDEVLOADDONE} */
3303	static DECLCALLBACK(int) buslogicR3LoadDone(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
3304	{
3305	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3306
3307	buslogicR3RegisterISARange(pThis, pThis->uISABaseCode);
3308	buslogicR3Kick(pThis);
3309	return VINF_SUCCESS;
3310	}
3311
3312	/** @callback_method_impl{FNSSMDEVLOADEXEC} */
3313	static DECLCALLBACK(int) buslogicR3LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
3314	{
3315	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3316	int rc = VINF_SUCCESS;
3317
3318	/* We support saved states only from this and older versions. */
3319	if (uVersion > BUSLOGIC_SAVED_STATE_MINOR_VERSION)
3320	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
3321
3322	/* Every device first. */
3323	for (unsigned i = 0; i < RT_ELEMENTS(pBusLogic->aDeviceStates); i++)
3324	{
3325	PBUSLOGICDEVICE pDevice = &pBusLogic->aDeviceStates[i];
3326
3327	AssertMsg(!pDevice->cOutstandingRequests,
3328	("There are still outstanding requests on this device\n"));
3329	bool fPresent;
3330	rc = SSMR3GetBool(pSSM, &fPresent);
3331	AssertRCReturn(rc, rc);
3332	if (pDevice->fPresent != fPresent)
3333	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Target %u config mismatch: config=%RTbool state=%RTbool"), i, pDevice->fPresent, fPresent);
3334
3335	if (uPass == SSM_PASS_FINAL)
3336	SSMR3GetU32(pSSM, (uint32_t *)&pDevice->cOutstandingRequests);
3337	}
3338
3339	if (uPass != SSM_PASS_FINAL)
3340	return VINF_SUCCESS;
3341
3342	/* Now the main device state. */
3343	SSMR3GetU8 (pSSM, (uint8_t *)&pBusLogic->regStatus);
3344	SSMR3GetU8 (pSSM, (uint8_t *)&pBusLogic->regInterrupt);
3345	SSMR3GetU8 (pSSM, (uint8_t *)&pBusLogic->regGeometry);
3346	SSMR3GetMem (pSSM, &pBusLogic->LocalRam, sizeof(pBusLogic->LocalRam));
3347	SSMR3GetU8 (pSSM, &pBusLogic->uOperationCode);
3348	if (uVersion > BUSLOGIC_SAVED_STATE_MINOR_PRE_CMDBUF_RESIZE)
3349	SSMR3GetMem (pSSM, &pBusLogic->aCommandBuffer, sizeof(pBusLogic->aCommandBuffer));
3350	else
3351	SSMR3GetMem (pSSM, &pBusLogic->aCommandBuffer, BUSLOGIC_COMMAND_SIZE_OLD);
3352	SSMR3GetU8 (pSSM, &pBusLogic->iParameter);
3353	SSMR3GetU8 (pSSM, &pBusLogic->cbCommandParametersLeft);
3354	SSMR3GetBool (pSSM, &pBusLogic->fUseLocalRam);
3355	SSMR3GetMem (pSSM, pBusLogic->aReplyBuffer, sizeof(pBusLogic->aReplyBuffer));
3356	SSMR3GetU8 (pSSM, &pBusLogic->iReply);
3357	SSMR3GetU8 (pSSM, &pBusLogic->cbReplyParametersLeft);
3358	SSMR3GetBool (pSSM, &pBusLogic->fIRQEnabled);
3359	SSMR3GetU8 (pSSM, &pBusLogic->uISABaseCode);
3360	SSMR3GetU32 (pSSM, &pBusLogic->cMailbox);
3361	if (uVersion > BUSLOGIC_SAVED_STATE_MINOR_PRE_24BIT_MBOX)
3362	SSMR3GetBool (pSSM, &pBusLogic->fMbxIs24Bit);
3363	SSMR3GetGCPhys(pSSM, &pBusLogic->GCPhysAddrMailboxOutgoingBase);
3364	SSMR3GetU32 (pSSM, &pBusLogic->uMailboxOutgoingPositionCurrent);
3365	SSMR3GetU32 (pSSM, (uint32_t *)&pBusLogic->cMailboxesReady);
3366	SSMR3GetBool (pSSM, (bool *)&pBusLogic->fNotificationSent);
3367	SSMR3GetGCPhys(pSSM, &pBusLogic->GCPhysAddrMailboxIncomingBase);
3368	SSMR3GetU32 (pSSM, &pBusLogic->uMailboxIncomingPositionCurrent);
3369	SSMR3GetBool (pSSM, &pBusLogic->fStrictRoundRobinMode);
3370	SSMR3GetBool (pSSM, &pBusLogic->fExtendedLunCCBFormat);
3371
3372	rc = vboxscsiR3LoadExec(&pBusLogic->VBoxSCSI, pSSM);
3373	if (RT_FAILURE(rc))
3374	{
3375	LogRel(("BusLogic: Failed to restore BIOS state: %Rrc.\n", rc));
3376	return PDMDEV_SET_ERROR(pDevIns, rc,
3377	N_("BusLogic: Failed to restore BIOS state\n"));
3378	}
3379
3380	if (pBusLogic->VBoxSCSI.fBusy)
3381	pBusLogic->fRedo = true;
3382
3383	if (uVersion > BUSLOGIC_SAVED_STATE_MINOR_PRE_ERROR_HANDLING)
3384	{
3385	/* Check if there are pending tasks saved. */
3386	uint32_t cTasks = 0;
3387
3388	SSMR3GetU32(pSSM, &cTasks);
3389
3390	if (cTasks)
3391	pBusLogic->fRedo = true;
3392
3393	for (uint32_t i = 0; i < cTasks; i++)
3394	{
3395	PBUSLOGICTASKSTATE pTaskState = (PBUSLOGICTASKSTATE)RTMemCacheAlloc(pBusLogic->hTaskCache);
3396	if (!pTaskState)
3397	{
3398	rc = VERR_NO_MEMORY;
3399	break;
3400	}
3401
3402	rc = SSMR3GetU32(pSSM, &pTaskState->MailboxGuest.u32PhysAddrCCB);
3403	if (RT_FAILURE(rc))
3404	{
3405	RTMemCacheFree(pBusLogic->hTaskCache, pTaskState);
3406	break;
3407	}
3408
3409	/* Link into the list. */
3410	pTaskState->pRedoNext = pBusLogic->pTasksRedoHead;
3411	pBusLogic->pTasksRedoHead = pTaskState;
3412	}
3413	}
3414
3415	if (RT_SUCCESS(rc))
3416	{
3417	uint32_t u32;
3418	rc = SSMR3GetU32(pSSM, &u32);
3419	if (RT_SUCCESS(rc))
3420	AssertMsgReturn(u32 == ~0U, ("%#x\n", u32), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
3421	}
3422
3423	return rc;
3424	}
3425
3426	/**
3427	* Gets the pointer to the status LED of a device - called from the SCSI driver.
3428	*
3429	* @returns VBox status code.
3430	* @param pInterface Pointer to the interface structure containing the called function pointer.
3431	* @param iLUN The unit which status LED we desire. Always 0 here as the driver
3432	* doesn't know about other LUN's.
3433	* @param ppLed Where to store the LED pointer.
3434	*/
3435	static DECLCALLBACK(int) buslogicR3DeviceQueryStatusLed(PPDMILEDPORTS pInterface, unsigned iLUN, PPDMLED *ppLed)
3436	{
3437	PBUSLOGICDEVICE pDevice = PDMILEDPORTS_2_PBUSLOGICDEVICE(pInterface);
3438	if (iLUN == 0)
3439	{
3440	*ppLed = &pDevice->Led;
3441	Assert((*ppLed)->u32Magic == PDMLED_MAGIC);
3442	return VINF_SUCCESS;
3443	}
3444	return VERR_PDM_LUN_NOT_FOUND;
3445	}
3446
3447	/**
3448	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
3449	*/
3450	static DECLCALLBACK(void ) buslogicR3DeviceQueryInterface(PPDMIBASE pInterface, const char pszIID)
3451	{
3452	PBUSLOGICDEVICE pDevice = PDMIBASE_2_PBUSLOGICDEVICE(pInterface);
3453	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDevice->IBase);
3454	PDMIBASE_RETURN_INTERFACE(pszIID, PDMISCSIPORT, &pDevice->ISCSIPort);
3455	PDMIBASE_RETURN_INTERFACE(pszIID, PDMILEDPORTS, &pDevice->ILed);
3456	return NULL;
3457	}
3458
3459	/**
3460	* Gets the pointer to the status LED of a unit.
3461	*
3462	* @returns VBox status code.
3463	* @param pInterface Pointer to the interface structure containing the called function pointer.
3464	* @param iLUN The unit which status LED we desire.
3465	* @param ppLed Where to store the LED pointer.
3466	*/
3467	static DECLCALLBACK(int) buslogicR3StatusQueryStatusLed(PPDMILEDPORTS pInterface, unsigned iLUN, PPDMLED *ppLed)
3468	{
3469	PBUSLOGIC pBusLogic = PDMILEDPORTS_2_PBUSLOGIC(pInterface);
3470	if (iLUN < BUSLOGIC_MAX_DEVICES)
3471	{
3472	*ppLed = &pBusLogic->aDeviceStates[iLUN].Led;
3473	Assert((*ppLed)->u32Magic == PDMLED_MAGIC);
3474	return VINF_SUCCESS;
3475	}
3476	return VERR_PDM_LUN_NOT_FOUND;
3477	}
3478
3479	/**
3480	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
3481	*/
3482	static DECLCALLBACK(void ) buslogicR3StatusQueryInterface(PPDMIBASE pInterface, const char pszIID)
3483	{
3484	PBUSLOGIC pThis = PDMIBASE_2_PBUSLOGIC(pInterface);
3485	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->IBase);
3486	PDMIBASE_RETURN_INTERFACE(pszIID, PDMILEDPORTS, &pThis->ILeds);
3487	return NULL;
3488	}
3489
3490	/**
3491	* The worker thread processing requests from the guest.
3492	*
3493	* @returns VBox status code.
3494	* @param pDevIns The device instance.
3495	* @param pThread The thread structure.
3496	*/
3497	static DECLCALLBACK(int) buslogicR3Worker(PPDMDEVINS pDevIns, PPDMTHREAD pThread)
3498	{
3499	PBUSLOGIC pThis = (PBUSLOGIC)pThread->pvUser;
3500	int rc = VINF_SUCCESS;
3501
3502	if (pThread->enmState == PDMTHREADSTATE_INITIALIZING)
3503	return VINF_SUCCESS;
3504
3505	while (pThread->enmState == PDMTHREADSTATE_RUNNING)
3506	{
3507	ASMAtomicWriteBool(&pThis->fWrkThreadSleeping, true);
3508	bool fNotificationSent = ASMAtomicXchgBool(&pThis->fNotificationSent, false);
3509	if (!fNotificationSent)
3510	{
3511	Assert(ASMAtomicReadBool(&pThis->fWrkThreadSleeping));
3512	rc = SUPSemEventWaitNoResume(pThis->pSupDrvSession, pThis->hEvtProcess, RT_INDEFINITE_WAIT);
3513	AssertLogRelMsgReturn(RT_SUCCESS(rc) \|\| rc == VERR_INTERRUPTED, ("%Rrc\n", rc), rc);
3514	if (RT_UNLIKELY(pThread->enmState != PDMTHREADSTATE_RUNNING))
3515	break;
3516	LogFlowFunc(("Woken up with rc=%Rrc\n", rc));
3517	ASMAtomicWriteBool(&pThis->fNotificationSent, false);
3518	}
3519
3520	ASMAtomicWriteBool(&pThis->fWrkThreadSleeping, false);
3521
3522	/* Check whether there is a BIOS request pending and process it first. */
3523	if (ASMAtomicReadBool(&pThis->fBiosReqPending))
3524	{
3525	rc = buslogicR3PrepareBIOSSCSIRequest(pThis);
3526	AssertRC(rc);
3527	ASMAtomicXchgBool(&pThis->fBiosReqPending, false);
3528	}
3529	else
3530	{
3531	ASMAtomicXchgU32(&pThis->cMailboxesReady, 0); /** @todo Actually not required anymore but to stay compatible with older saved states. */
3532
3533	/* Process mailboxes. */
3534	do
3535	{
3536	rc = buslogicR3ProcessMailboxNext(pThis);
3537	AssertMsg(RT_SUCCESS(rc) \|\| rc == VERR_NO_DATA, ("Processing mailbox failed rc=%Rrc\n", rc));
3538	} while (RT_SUCCESS(rc));
3539	}
3540	} /* While running */
3541
3542	return VINF_SUCCESS;
3543	}
3544
3545
3546	/**
3547	* Unblock the worker thread so it can respond to a state change.
3548	*
3549	* @returns VBox status code.
3550	* @param pDevIns The device instance.
3551	* @param pThread The send thread.
3552	*/
3553	static DECLCALLBACK(int) buslogicR3WorkerWakeUp(PPDMDEVINS pDevIns, PPDMTHREAD pThread)
3554	{
3555	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3556	return SUPSemEventSignal(pThis->pSupDrvSession, pThis->hEvtProcess);
3557	}
3558
3559	/**
3560	* BusLogic debugger info callback.
3561	*
3562	* @param pDevIns The device instance.
3563	* @param pHlp The output helpers.
3564	* @param pszArgs The arguments.
3565	*/
3566	static DECLCALLBACK(void) buslogicR3Info(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs)
3567	{
3568	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3569	unsigned i;
3570	bool fVerbose = false;
3571
3572	/* Parse arguments. */
3573	if (pszArgs)
3574	fVerbose = strstr(pszArgs, "verbose") != NULL;
3575
3576	/* Show basic information. */
3577	pHlp->pfnPrintf(pHlp,
3578	"%s#%d: PCI I/O=%RTiop ISA I/O=%RTiop MMIO=%RGp IRQ=%u GC=%RTbool R0=%RTbool\n",
3579	pDevIns->pReg->szName,
3580	pDevIns->iInstance,
3581	pThis->IOPortBase, pThis->IOISABase, pThis->MMIOBase,
3582	PCIDevGetInterruptLine(&pThis->dev),
3583	!!pThis->fGCEnabled, !!pThis->fR0Enabled);
3584
3585	/* Print mailbox state. */
3586	if (pThis->regStatus & BL_STAT_INREQ)
3587	pHlp->pfnPrintf(pHlp, "Mailbox not initialized\n");
3588	else
3589	pHlp->pfnPrintf(pHlp, "%u-bit mailbox with %u entries at %RGp (%d LUN CCBs)\n",
3590	pThis->fMbxIs24Bit ? 24 : 32, pThis->cMailbox,
3591	pThis->GCPhysAddrMailboxOutgoingBase,
3592	pThis->fMbxIs24Bit ? 8 : pThis->fExtendedLunCCBFormat ? 64 : 8);
3593
3594	/* Print register contents. */
3595	pHlp->pfnPrintf(pHlp, "Registers: STAT=%02x INTR=%02x GEOM=%02x\n",
3596	pThis->regStatus, pThis->regInterrupt, pThis->regGeometry);
3597
3598	/* Print miscellaneous state. */
3599	pHlp->pfnPrintf(pHlp, "HAC interrupts: %s\n",
3600	pThis->fIRQEnabled ? "on" : "off");
3601
3602	/* Print the current command, if any. */
3603	if (pThis->uOperationCode != 0xff )
3604	pHlp->pfnPrintf(pHlp, "Current command: %02X\n", pThis->uOperationCode);
3605
3606	if (fVerbose && (pThis->regStatus & BL_STAT_INREQ) == 0)
3607	{
3608	RTGCPHYS GCMailbox;
3609
3610	/* Dump the mailbox contents. */
3611	if (pThis->fMbxIs24Bit)
3612	{
3613	Mailbox24 Mbx24;
3614
3615	/* Outgoing mailbox, 24-bit format. */
3616	GCMailbox = pThis->GCPhysAddrMailboxOutgoingBase;
3617	pHlp->pfnPrintf(pHlp, " Outgoing mailbox entries (24-bit) at %06X:\n", GCMailbox);
3618	for (i = 0; i < pThis->cMailbox; ++i)
3619	{
3620	PDMDevHlpPhysRead(pThis->CTX_SUFF(pDevIns), GCMailbox, &Mbx24, sizeof(Mailbox24));
3621	pHlp->pfnPrintf(pHlp, " slot %03d: CCB at %06X action code %02X", i, ADDR_TO_U32(Mbx24.aPhysAddrCCB), Mbx24.uCmdState);
3622	pHlp->pfnPrintf(pHlp, "%s\n", pThis->uMailboxOutgoingPositionCurrent == i ? " *" : "");
3623	GCMailbox += sizeof(Mailbox24);
3624	}
3625
3626	/* Incoming mailbox, 24-bit format. */
3627	GCMailbox = pThis->GCPhysAddrMailboxOutgoingBase + (pThis->cMailbox * sizeof(Mailbox24));
3628	pHlp->pfnPrintf(pHlp, " Incoming mailbox entries (24-bit) at %06X:\n", GCMailbox);
3629	for (i = 0; i < pThis->cMailbox; ++i)
3630	{
3631	PDMDevHlpPhysRead(pThis->CTX_SUFF(pDevIns), GCMailbox, &Mbx24, sizeof(Mailbox24));
3632	pHlp->pfnPrintf(pHlp, " slot %03d: CCB at %06X completion code %02X", i, ADDR_TO_U32(Mbx24.aPhysAddrCCB), Mbx24.uCmdState);
3633	pHlp->pfnPrintf(pHlp, "%s\n", pThis->uMailboxIncomingPositionCurrent == i ? " *" : "");
3634	GCMailbox += sizeof(Mailbox24);
3635	}
3636
3637	}
3638	else
3639	{
3640	Mailbox32 Mbx32;
3641
3642	/* Outgoing mailbox, 32-bit format. */
3643	GCMailbox = pThis->GCPhysAddrMailboxOutgoingBase;
3644	pHlp->pfnPrintf(pHlp, " Outgoing mailbox entries (32-bit) at %08X:\n", (uint32_t)GCMailbox);
3645	for (i = 0; i < pThis->cMailbox; ++i)
3646	{
3647	PDMDevHlpPhysRead(pThis->CTX_SUFF(pDevIns), GCMailbox, &Mbx32, sizeof(Mailbox32));
3648	pHlp->pfnPrintf(pHlp, " slot %03d: CCB at %08X action code %02X", i, Mbx32.u32PhysAddrCCB, Mbx32.u.out.uActionCode);
3649	pHlp->pfnPrintf(pHlp, "%s\n", pThis->uMailboxOutgoingPositionCurrent == i ? " *" : "");
3650	GCMailbox += sizeof(Mailbox32);
3651	}
3652
3653	/* Incoming mailbox, 32-bit format. */
3654	GCMailbox = pThis->GCPhysAddrMailboxOutgoingBase + (pThis->cMailbox * sizeof(Mailbox32));
3655	pHlp->pfnPrintf(pHlp, " Outgoing mailbox entries (32-bit) at %08X:\n", (uint32_t)GCMailbox);
3656	for (i = 0; i < pThis->cMailbox; ++i)
3657	{
3658	PDMDevHlpPhysRead(pThis->CTX_SUFF(pDevIns), GCMailbox, &Mbx32, sizeof(Mailbox32));
3659	pHlp->pfnPrintf(pHlp, " slot %03d: CCB at %08X completion code %02X BTSTAT %02X SDSTAT %02X", i,
3660	Mbx32.u32PhysAddrCCB, Mbx32.u.in.uCompletionCode, Mbx32.u.in.uHostAdapterStatus, Mbx32.u.in.uTargetDeviceStatus);
3661	pHlp->pfnPrintf(pHlp, "%s\n", pThis->uMailboxOutgoingPositionCurrent == i ? " *" : "");
3662	GCMailbox += sizeof(Mailbox32);
3663	}
3664
3665	}
3666	}
3667	}
3668
3669	/* -=-=-=-=- Helper -=-=-=-=- */
3670
3671	/**
3672	* Checks if all asynchronous I/O is finished.
3673	*
3674	* Used by buslogicR3Reset, buslogicR3Suspend and buslogicR3PowerOff.
3675	*
3676	* @returns true if quiesced, false if busy.
3677	* @param pDevIns The device instance.
3678	*/
3679	static bool buslogicR3AllAsyncIOIsFinished(PPDMDEVINS pDevIns)
3680	{
3681	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3682
3683	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aDeviceStates); i++)
3684	{
3685	PBUSLOGICDEVICE pThisDevice = &pThis->aDeviceStates[i];
3686	if (pThisDevice->pDrvBase)
3687	{
3688	if (pThisDevice->cOutstandingRequests != 0)
3689	return false;
3690	}
3691	}
3692
3693	return true;
3694	}
3695
3696	/**
3697	* Callback employed by buslogicR3Suspend and buslogicR3PowerOff..
3698	*
3699	* @returns true if we've quiesced, false if we're still working.
3700	* @param pDevIns The device instance.
3701	*/
3702	static DECLCALLBACK(bool) buslogicR3IsAsyncSuspendOrPowerOffDone(PPDMDEVINS pDevIns)
3703	{
3704	if (!buslogicR3AllAsyncIOIsFinished(pDevIns))
3705	return false;
3706
3707	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3708	ASMAtomicWriteBool(&pThis->fSignalIdle, false);
3709	return true;
3710	}
3711
3712	/**
3713	* Common worker for ahciR3Suspend and ahciR3PowerOff.
3714	*/
3715	static void buslogicR3SuspendOrPowerOff(PPDMDEVINS pDevIns, bool fPowerOff)
3716	{
3717	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3718
3719	ASMAtomicWriteBool(&pThis->fSignalIdle, true);
3720	if (!buslogicR3AllAsyncIOIsFinished(pDevIns))
3721	PDMDevHlpSetAsyncNotification(pDevIns, buslogicR3IsAsyncSuspendOrPowerOffDone);
3722	else
3723	{
3724	ASMAtomicWriteBool(&pThis->fSignalIdle, false);
3725
3726	AssertMsg(!pThis->fNotificationSent, ("The PDM Queue should be empty at this point\n"));
3727
3728	if (pThis->fRedo)
3729	{
3730	if (fPowerOff)
3731	{
3732	/* Free tasks which would have been queued again on resume. */
3733	PBUSLOGICTASKSTATE pTaskState = pThis->pTasksRedoHead;
3734
3735	pThis->pTasksRedoHead = NULL;
3736
3737	while (pTaskState)
3738	{
3739	PBUSLOGICTASKSTATE pFree;
3740
3741	pFree = pTaskState;
3742	pTaskState = pTaskState->pRedoNext;
3743
3744	RTMemCacheFree(pThis->hTaskCache, pFree);
3745	}
3746	pThis->fRedo = false;
3747	}
3748	else if (pThis->VBoxSCSI.fBusy)
3749	{
3750	/* Destroy the task because the BIOS interface has all necessary information. */
3751	Assert(pThis->pTasksRedoHead->fBIOS);
3752	Assert(!pThis->pTasksRedoHead->pRedoNext);
3753
3754	RTMemCacheFree(pThis->hTaskCache, pThis->pTasksRedoHead);
3755	pThis->pTasksRedoHead = NULL;
3756	}
3757	}
3758	}
3759	}
3760
3761	/**
3762	* Suspend notification.
3763	*
3764	* @param pDevIns The device instance data.
3765	*/
3766	static DECLCALLBACK(void) buslogicR3Suspend(PPDMDEVINS pDevIns)
3767	{
3768	Log(("buslogicR3Suspend\n"));
3769	buslogicR3SuspendOrPowerOff(pDevIns, false /* fPoweroff */);
3770	}
3771
3772	/**
3773	* Resume notification.
3774	*
3775	* @param pDevIns The device instance data.
3776	*/
3777	static DECLCALLBACK(void) buslogicR3Resume(PPDMDEVINS pDevIns)
3778	{
3779	Log(("buslogicR3Resume\n"));
3780	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3781	buslogicR3Kick(pThis);
3782	}
3783
3784
3785	/**
3786	* Detach notification.
3787	*
3788	* One harddisk at one port has been unplugged.
3789	* The VM is suspended at this point.
3790	*
3791	* @param pDevIns The device instance.
3792	* @param iLUN The logical unit which is being detached.
3793	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
3794	*/
3795	static DECLCALLBACK(void) buslogicR3Detach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
3796	{
3797	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3798	PBUSLOGICDEVICE pDevice = &pThis->aDeviceStates[iLUN];
3799
3800	Log(("%s:\n", __FUNCTION__));
3801
3802	AssertMsg(fFlags & PDM_TACH_FLAGS_NOT_HOT_PLUG,
3803	("BusLogic: Device does not support hotplugging\n"));
3804
3805	/*
3806	* Zero some important members.
3807	*/
3808	pDevice->pDrvBase = NULL;
3809	pDevice->fPresent = false;
3810	pDevice->pDrvSCSIConnector = NULL;
3811	}
3812
3813	/**
3814	* Attach command.
3815	*
3816	* This is called when we change block driver.
3817	*
3818	* @returns VBox status code.
3819	* @param pDevIns The device instance.
3820	* @param iLUN The logical unit which is being detached.
3821	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
3822	*/
3823	static DECLCALLBACK(int) buslogicR3Attach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
3824	{
3825	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3826	PBUSLOGICDEVICE pDevice = &pThis->aDeviceStates[iLUN];
3827	int rc;
3828
3829	AssertMsgReturn(fFlags & PDM_TACH_FLAGS_NOT_HOT_PLUG,
3830	("BusLogic: Device does not support hotplugging\n"),
3831	VERR_INVALID_PARAMETER);
3832
3833	/* the usual paranoia */
3834	AssertRelease(!pDevice->pDrvBase);
3835	AssertRelease(!pDevice->pDrvSCSIConnector);
3836	Assert(pDevice->iLUN == iLUN);
3837
3838	/*
3839	* Try attach the block device and get the interfaces,
3840	* required as well as optional.
3841	*/
3842	rc = PDMDevHlpDriverAttach(pDevIns, pDevice->iLUN, &pDevice->IBase, &pDevice->pDrvBase, NULL);
3843	if (RT_SUCCESS(rc))
3844	{
3845	/* Get SCSI connector interface. */
3846	pDevice->pDrvSCSIConnector = PDMIBASE_QUERY_INTERFACE(pDevice->pDrvBase, PDMISCSICONNECTOR);
3847	AssertMsgReturn(pDevice->pDrvSCSIConnector, ("Missing SCSI interface below\n"), VERR_PDM_MISSING_INTERFACE);
3848	pDevice->fPresent = true;
3849	}
3850	else
3851	AssertMsgFailed(("Failed to attach LUN#%d. rc=%Rrc\n", pDevice->iLUN, rc));
3852
3853	if (RT_FAILURE(rc))
3854	{
3855	pDevice->pDrvBase = NULL;
3856	pDevice->pDrvSCSIConnector = NULL;
3857	}
3858	return rc;
3859	}
3860
3861	/**
3862	* Callback employed by buslogicR3Reset.
3863	*
3864	* @returns true if we've quiesced, false if we're still working.
3865	* @param pDevIns The device instance.
3866	*/
3867	static DECLCALLBACK(bool) buslogicR3IsAsyncResetDone(PPDMDEVINS pDevIns)
3868	{
3869	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3870
3871	if (!buslogicR3AllAsyncIOIsFinished(pDevIns))
3872	return false;
3873	ASMAtomicWriteBool(&pThis->fSignalIdle, false);
3874
3875	buslogicR3HwReset(pThis, true);
3876	return true;
3877	}
3878
3879	/**
3880	* @copydoc FNPDMDEVRESET
3881	*/
3882	static DECLCALLBACK(void) buslogicR3Reset(PPDMDEVINS pDevIns)
3883	{
3884	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3885
3886	ASMAtomicWriteBool(&pThis->fSignalIdle, true);
3887	if (!buslogicR3AllAsyncIOIsFinished(pDevIns))
3888	PDMDevHlpSetAsyncNotification(pDevIns, buslogicR3IsAsyncResetDone);
3889	else
3890	{
3891	ASMAtomicWriteBool(&pThis->fSignalIdle, false);
3892	buslogicR3HwReset(pThis, true);
3893	}
3894	}
3895
3896	static DECLCALLBACK(void) buslogicR3Relocate(PPDMDEVINS pDevIns, RTGCINTPTR offDelta)
3897	{
3898	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3899
3900	pThis->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
3901	pThis->pNotifierQueueRC = PDMQueueRCPtr(pThis->pNotifierQueueR3);
3902
3903	for (uint32_t i = 0; i < BUSLOGIC_MAX_DEVICES; i++)
3904	{
3905	PBUSLOGICDEVICE pDevice = &pThis->aDeviceStates[i];
3906
3907	pDevice->pBusLogicRC = PDMINS_2_DATA_RCPTR(pDevIns);
3908	}
3909
3910	}
3911
3912	/**
3913	* Poweroff notification.
3914	*
3915	* @param pDevIns Pointer to the device instance
3916	*/
3917	static DECLCALLBACK(void) buslogicR3PowerOff(PPDMDEVINS pDevIns)
3918	{
3919	Log(("buslogicR3PowerOff\n"));
3920	buslogicR3SuspendOrPowerOff(pDevIns, true /* fPoweroff */);
3921	}
3922
3923	/**
3924	* Destroy a driver instance.
3925	*
3926	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
3927	* resources can be freed correctly.
3928	*
3929	* @param pDevIns The device instance data.
3930	*/
3931	static DECLCALLBACK(int) buslogicR3Destruct(PPDMDEVINS pDevIns)
3932	{
3933	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3934	PDMDEV_CHECK_VERSIONS_RETURN_QUIET(pDevIns);
3935
3936	PDMR3CritSectDelete(&pThis->CritSectIntr);
3937
3938	/*
3939	* Free all tasks which are still hanging around
3940	* (Power off after the VM was suspended).
3941	*/
3942	if (pThis->fRedo)
3943	{
3944	/* Free tasks which would have been queued again on resume. */
3945	PBUSLOGICTASKSTATE pTaskState = pThis->pTasksRedoHead;
3946
3947	pThis->pTasksRedoHead = NULL;
3948
3949	while (pTaskState)
3950	{
3951	PBUSLOGICTASKSTATE pFree;
3952
3953	pFree = pTaskState;
3954	pTaskState = pTaskState->pRedoNext;
3955
3956	RTMemCacheFree(pThis->hTaskCache, pFree);
3957	}
3958	pThis->fRedo = false;
3959	}
3960
3961	if (pThis->hEvtProcess != NIL_SUPSEMEVENT)
3962	{
3963	SUPSemEventClose(pThis->pSupDrvSession, pThis->hEvtProcess);
3964	pThis->hEvtProcess = NIL_SUPSEMEVENT;
3965	}
3966
3967	int rc = RTMemCacheDestroy(pThis->hTaskCache);
3968	AssertMsgRC(rc, ("Destroying task cache failed rc=%Rrc\n", rc));
3969
3970	return rc;
3971	}
3972
3973	/**
3974	* @interface_method_impl{PDMDEVREG,pfnConstruct}
3975	*/
3976	static DECLCALLBACK(int) buslogicR3Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
3977	{
3978	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3979	int rc = VINF_SUCCESS;
3980	bool fBootable = true;
3981	char achISACompat[16];
3982	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
3983
3984	/*
3985	* Init instance data (do early because of constructor).
3986	*/
3987	pThis->hTaskCache = NIL_RTMEMCACHE;
3988	pThis->pDevInsR3 = pDevIns;
3989	pThis->pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
3990	pThis->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
3991	pThis->IBase.pfnQueryInterface = buslogicR3StatusQueryInterface;
3992	pThis->ILeds.pfnQueryStatusLed = buslogicR3StatusQueryStatusLed;
3993
3994	PCIDevSetVendorId (&pThis->dev, 0x104b); /* BusLogic */
3995	PCIDevSetDeviceId (&pThis->dev, 0x1040); /* BT-958 */
3996	PCIDevSetCommand (&pThis->dev, 0x0003);
3997	PCIDevSetRevisionId (&pThis->dev, 0x01);
3998	PCIDevSetClassProg (&pThis->dev, 0x00); /* SCSI */
3999	PCIDevSetClassSub (&pThis->dev, 0x00); /* SCSI */
4000	PCIDevSetClassBase (&pThis->dev, 0x01); /* Mass storage */
4001	PCIDevSetBaseAddress (&pThis->dev, 0, true /IO/, false /Pref/, false /64-bit/, 0x00000000);
4002	PCIDevSetBaseAddress (&pThis->dev, 1, false /IO/, false /Pref/, false /64-bit/, 0x00000000);
4003	PCIDevSetSubSystemVendorId(&pThis->dev, 0x104b);
4004	PCIDevSetSubSystemId (&pThis->dev, 0x1040);
4005	PCIDevSetInterruptLine (&pThis->dev, 0x00);
4006	PCIDevSetInterruptPin (&pThis->dev, 0x01);
4007
4008	/*
4009	* Validate and read configuration.
4010	*/
4011	if (!CFGMR3AreValuesValid(pCfg,
4012	"GCEnabled\0"
4013	"R0Enabled\0"
4014	"Bootable\0"
4015	"ISACompat\0"))
4016	return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
4017	N_("BusLogic configuration error: unknown option specified"));
4018
4019	rc = CFGMR3QueryBoolDef(pCfg, "GCEnabled", &pThis->fGCEnabled, true);
4020	if (RT_FAILURE(rc))
4021	return PDMDEV_SET_ERROR(pDevIns, rc,
4022	N_("BusLogic configuration error: failed to read GCEnabled as boolean"));
4023	Log(("%s: fGCEnabled=%d\n", __FUNCTION__, pThis->fGCEnabled));
4024
4025	rc = CFGMR3QueryBoolDef(pCfg, "R0Enabled", &pThis->fR0Enabled, true);
4026	if (RT_FAILURE(rc))
4027	return PDMDEV_SET_ERROR(pDevIns, rc,
4028	N_("BusLogic configuration error: failed to read R0Enabled as boolean"));
4029	Log(("%s: fR0Enabled=%d\n", __FUNCTION__, pThis->fR0Enabled));
4030	rc = CFGMR3QueryBoolDef(pCfg, "Bootable", &fBootable, true);
4031	if (RT_FAILURE(rc))
4032	return PDMDEV_SET_ERROR(pDevIns, rc,
4033	N_("BusLogic configuration error: failed to read Bootable as boolean"));
4034	Log(("%s: fBootable=%RTbool\n", __FUNCTION__, fBootable));
4035
4036	/* Only the first instance defaults to having the ISA compatibility ports enabled. */
4037	if (iInstance == 0)
4038	rc = CFGMR3QueryStringDef(pCfg, "ISACompat", achISACompat, sizeof(achISACompat), "Alternate");
4039	else
4040	rc = CFGMR3QueryStringDef(pCfg, "ISACompat", achISACompat, sizeof(achISACompat), "Disabled");
4041	if (RT_FAILURE(rc))
4042	return PDMDEV_SET_ERROR(pDevIns, rc,
4043	N_("BusLogic configuration error: failed to read ISACompat as string"));
4044	Log(("%s: ISACompat=%s\n", __FUNCTION__, achISACompat));
4045
4046	/* Grok the ISACompat setting. */
4047	if (!strcmp(achISACompat, "Disabled"))
4048	pThis->uDefaultISABaseCode = ISA_BASE_DISABLED;
4049	else if (!strcmp(achISACompat, "Primary"))
4050	pThis->uDefaultISABaseCode = 0; /* I/O base at 330h. */
4051	else if (!strcmp(achISACompat, "Alternate"))
4052	pThis->uDefaultISABaseCode = 1; /* I/O base at 334h. */
4053	else
4054	return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
4055	N_("BusLogic configuration error: invalid ISACompat setting"));
4056
4057	/*
4058	* Register the PCI device and its I/O regions.
4059	*/
4060	rc = PDMDevHlpPCIRegister(pDevIns, &pThis->dev);
4061	if (RT_FAILURE(rc))
4062	return rc;
4063
4064	rc = PDMDevHlpPCIIORegionRegister(pDevIns, 0, 32, PCI_ADDRESS_SPACE_IO, buslogicR3MmioMap);
4065	if (RT_FAILURE(rc))
4066	return rc;
4067
4068	rc = PDMDevHlpPCIIORegionRegister(pDevIns, 1, 32, PCI_ADDRESS_SPACE_MEM, buslogicR3MmioMap);
4069	if (RT_FAILURE(rc))
4070	return rc;
4071
4072	if (fBootable)
4073	{
4074	/* Register I/O port space for BIOS access. */
4075	rc = PDMDevHlpIOPortRegister(pDevIns, BUSLOGIC_BIOS_IO_PORT, 4, NULL,
4076	buslogicR3BiosIoPortWrite, buslogicR3BiosIoPortRead,
4077	buslogicR3BiosIoPortWriteStr, buslogicR3BiosIoPortReadStr,
4078	"BusLogic BIOS");
4079	if (RT_FAILURE(rc))
4080	return PDMDEV_SET_ERROR(pDevIns, rc, N_("BusLogic cannot register BIOS I/O handlers"));
4081	}
4082
4083	/* Set up the compatibility I/O range. */
4084	rc = buslogicR3RegisterISARange(pThis, pThis->uDefaultISABaseCode);
4085	if (RT_FAILURE(rc))
4086	return PDMDEV_SET_ERROR(pDevIns, rc, N_("BusLogic cannot register ISA I/O handlers"));
4087
4088	/* Initialize task cache. */
4089	rc = RTMemCacheCreate(&pThis->hTaskCache, sizeof(BUSLOGICTASKSTATE), 0, UINT32_MAX,
4090	NULL, NULL, NULL, 0);
4091	if (RT_FAILURE(rc))
4092	return PDMDEV_SET_ERROR(pDevIns, rc,
4093	N_("BusLogic: Failed to initialize task cache\n"));
4094
4095	/* Initialize task queue. */
4096	rc = PDMDevHlpQueueCreate(pDevIns, sizeof(PDMQUEUEITEMCORE), 5, 0,
4097	buslogicR3NotifyQueueConsumer, true, "BusLogicTask", &pThis->pNotifierQueueR3);
4098	if (RT_FAILURE(rc))
4099	return rc;
4100	pThis->pNotifierQueueR0 = PDMQueueR0Ptr(pThis->pNotifierQueueR3);
4101	pThis->pNotifierQueueRC = PDMQueueRCPtr(pThis->pNotifierQueueR3);
4102
4103	rc = PDMDevHlpCritSectInit(pDevIns, &pThis->CritSectIntr, RT_SRC_POS, "BusLogic-Intr#%u", pDevIns->iInstance);
4104	if (RT_FAILURE(rc))
4105	return PDMDEV_SET_ERROR(pDevIns, rc, N_("BusLogic: cannot create critical section"));
4106
4107	/*
4108	* Create event semaphore and worker thread.
4109	*/
4110	rc = SUPSemEventCreate(pThis->pSupDrvSession, &pThis->hEvtProcess);
4111	if (RT_FAILURE(rc))
4112	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS,
4113	N_("BusLogic: Failed to create SUP event semaphore"));
4114
4115	char szDevTag[20];
4116	RTStrPrintf(szDevTag, sizeof(szDevTag), "BUSLOGIC-%u", iInstance);
4117
4118	rc = PDMDevHlpThreadCreate(pDevIns, &pThis->pThreadWrk, pThis, buslogicR3Worker,
4119	buslogicR3WorkerWakeUp, 0, RTTHREADTYPE_IO, szDevTag);
4120	if (RT_FAILURE(rc))
4121	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS,
4122	N_("BusLogic: Failed to create worker thread %s"), szDevTag);
4123
4124	/* Initialize per device state. */
4125	for (unsigned i = 0; i < RT_ELEMENTS(pThis->aDeviceStates); i++)
4126	{
4127	char szName[24];
4128	PBUSLOGICDEVICE pDevice = &pThis->aDeviceStates[i];
4129
4130	RTStrPrintf(szName, sizeof(szName), "Device%u", i);
4131
4132	/* Initialize static parts of the device. */
4133	pDevice->iLUN = i;
4134	pDevice->pBusLogicR3 = pThis;
4135	pDevice->pBusLogicR0 = PDMINS_2_DATA_R0PTR(pDevIns);
4136	pDevice->pBusLogicRC = PDMINS_2_DATA_RCPTR(pDevIns);
4137	pDevice->Led.u32Magic = PDMLED_MAGIC;
4138	pDevice->IBase.pfnQueryInterface = buslogicR3DeviceQueryInterface;
4139	pDevice->ISCSIPort.pfnSCSIRequestCompleted = buslogicR3DeviceSCSIRequestCompleted;
4140	pDevice->ISCSIPort.pfnQueryDeviceLocation = buslogicR3QueryDeviceLocation;
4141	pDevice->ILed.pfnQueryStatusLed = buslogicR3DeviceQueryStatusLed;
4142
4143	/* Attach SCSI driver. */
4144	rc = PDMDevHlpDriverAttach(pDevIns, pDevice->iLUN, &pDevice->IBase, &pDevice->pDrvBase, szName);
4145	if (RT_SUCCESS(rc))
4146	{
4147	/* Get SCSI connector interface. */
4148	pDevice->pDrvSCSIConnector = PDMIBASE_QUERY_INTERFACE(pDevice->pDrvBase, PDMISCSICONNECTOR);
4149	AssertMsgReturn(pDevice->pDrvSCSIConnector, ("Missing SCSI interface below\n"), VERR_PDM_MISSING_INTERFACE);
4150
4151	pDevice->fPresent = true;
4152	}
4153	else if (rc == VERR_PDM_NO_ATTACHED_DRIVER)
4154	{
4155	pDevice->pDrvBase = NULL;
4156	pDevice->fPresent = false;
4157	rc = VINF_SUCCESS;
4158	Log(("BusLogic: no driver attached to device %s\n", szName));
4159	}
4160	else
4161	{
4162	AssertLogRelMsgFailed(("BusLogic: Failed to attach %s\n", szName));
4163	return rc;
4164	}
4165	}
4166
4167	/*
4168	* Attach status driver (optional).
4169	*/
4170	PPDMIBASE pBase;
4171	rc = PDMDevHlpDriverAttach(pDevIns, PDM_STATUS_LUN, &pThis->IBase, &pBase, "Status Port");
4172	if (RT_SUCCESS(rc))
4173	pThis->pLedsConnector = PDMIBASE_QUERY_INTERFACE(pBase, PDMILEDCONNECTORS);
4174	else if (rc != VERR_PDM_NO_ATTACHED_DRIVER)
4175	{
4176	AssertMsgFailed(("Failed to attach to status driver. rc=%Rrc\n", rc));
4177	return PDMDEV_SET_ERROR(pDevIns, rc, N_("BusLogic cannot attach to status driver"));
4178	}
4179
4180	rc = PDMDevHlpSSMRegisterEx(pDevIns, BUSLOGIC_SAVED_STATE_MINOR_VERSION, sizeof(*pThis), NULL,
4181	NULL, buslogicR3LiveExec, NULL,
4182	NULL, buslogicR3SaveExec, NULL,
4183	NULL, buslogicR3LoadExec, buslogicR3LoadDone);
4184	if (RT_FAILURE(rc))
4185	return PDMDEV_SET_ERROR(pDevIns, rc, N_("BusLogic cannot register save state handlers"));
4186
4187	/*
4188	* Register the debugger info callback.
4189	*/
4190	char szTmp[128];
4191	RTStrPrintf(szTmp, sizeof(szTmp), "%s%d", pDevIns->pReg->szName, pDevIns->iInstance);
4192	PDMDevHlpDBGFInfoRegister(pDevIns, szTmp, "BusLogic HBA info", buslogicR3Info);
4193
4194	rc = buslogicR3HwReset(pThis, true);
4195	AssertMsgRC(rc, ("hardware reset of BusLogic host adapter failed rc=%Rrc\n", rc));
4196
4197	return rc;
4198	}
4199
4200	/**
4201	* The device registration structure.
4202	*/
4203	const PDMDEVREG g_DeviceBusLogic =
4204	{
4205	/* u32Version */
4206	PDM_DEVREG_VERSION,
4207	/* szName */
4208	"buslogic",
4209	/* szRCMod */
4210	"VBoxDDRC.rc",
4211	/* szR0Mod */
4212	"VBoxDDR0.r0",
4213	/* pszDescription */
4214	"BusLogic BT-958 SCSI host adapter.\n",
4215	/* fFlags */
4216	PDM_DEVREG_FLAGS_DEFAULT_BITS \| PDM_DEVREG_FLAGS_RC \| PDM_DEVREG_FLAGS_R0 \|
4217	PDM_DEVREG_FLAGS_FIRST_SUSPEND_NOTIFICATION \| PDM_DEVREG_FLAGS_FIRST_POWEROFF_NOTIFICATION \|
4218	PDM_DEVREG_FLAGS_FIRST_RESET_NOTIFICATION,
4219	/* fClass */
4220	PDM_DEVREG_CLASS_STORAGE,
4221	/* cMaxInstances */
4222	~0U,
4223	/* cbInstance */
4224	sizeof(BUSLOGIC),
4225	/* pfnConstruct */
4226	buslogicR3Construct,
4227	/* pfnDestruct */
4228	buslogicR3Destruct,
4229	/* pfnRelocate */
4230	buslogicR3Relocate,
4231	/* pfnMemSetup */
4232	NULL,
4233	/* pfnPowerOn */
4234	NULL,
4235	/* pfnReset */
4236	buslogicR3Reset,
4237	/* pfnSuspend */
4238	buslogicR3Suspend,
4239	/* pfnResume */
4240	buslogicR3Resume,
4241	/* pfnAttach */
4242	buslogicR3Attach,
4243	/* pfnDetach */
4244	buslogicR3Detach,
4245	/* pfnQueryInterface. */
4246	NULL,
4247	/* pfnInitComplete */
4248	NULL,
4249	/* pfnPowerOff */
4250	buslogicR3PowerOff,
4251	/* pfnSoftReset */
4252	NULL,
4253	/* u32VersionEnd */
4254	PDM_DEVREG_VERSION
4255	};
4256
4257	#endif /* IN_RING3 */
4258	#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */

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source: vbox/trunk/src/VBox/Devices/Storage/DevBusLogic.cpp@ 60441

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