DevBusLogic.cpp@ 38791

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1	/* $Id: DevBusLogic.cpp 38782 2011-09-16 16:15:00Z vboxsync $ */
2	/** @file
3	* VBox storage devices: BusLogic SCSI host adapter BT-958.
4	*/
5
6	/*
7	* Copyright (C) 2006-2009 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18	/* Implemented looking at the driver source in the linux kernel (drivers/scsi/BusLogic.[ch]).
19	* See also: http://www.drdobbs.com/184410111
20	*/
21
22	/*******************************************************************************
23	* Header Files *
24	*******************************************************************************/
25	//#define DEBUG
26	#define LOG_GROUP LOG_GROUP_DEV_BUSLOGIC
27	#include <VBox/vmm/pdmdev.h>
28	#include <VBox/vmm/pdmifs.h>
29	#include <VBox/vmm/pdmcritsect.h>
30	#include <VBox/scsi.h>
31	#include <iprt/asm.h>
32	#include <iprt/assert.h>
33	#include <iprt/string.h>
34	#include <iprt/log.h>
35	#ifdef IN_RING3
36	# include <iprt/alloc.h>
37	# include <iprt/memcache.h>
38	# include <iprt/param.h>
39	# include <iprt/uuid.h>
40	#endif
41
42	#include "VBoxSCSI.h"
43	#include "VBoxDD.h"
44
45	/* Maximum number of attached devices the adapter can handle. */
46	#define BUSLOGIC_MAX_DEVICES 16
47
48	/* Maximum number of scatter gather elements this device can handle. */
49	#define BUSLOGIC_MAX_SCATTER_GATHER_LIST_SIZE 128
50
51	/* Size of the command buffer. */
52	#define BUSLOGIC_COMMAND_SIZE_MAX 5
53
54	/* Size of the reply buffer. */
55	#define BUSLOGIC_REPLY_SIZE_MAX 64
56
57	/* I/O port registered in the ISA compatible range to let the BIOS access
58	* the controller.
59	*/
60	#define BUSLOGIC_ISA_IO_PORT 0x330
61
62	/** State saved version. */
63	#define BUSLOGIC_SAVED_STATE_MINOR_VERSION 2
64
65	/** Saved state version before the suspend on error feature was implemented. */
66	#define BUSLOGIC_SAVED_STATE_MINOR_PRE_ERROR_HANDLING 1
67
68	/**
69	* State of a device attached to the buslogic host adapter.
70	*
71	* @implements PDMIBASE
72	* @implements PDMISCSIPORT
73	* @implements PDMILEDPORTS
74	*/
75	typedef struct BUSLOGICDEVICE
76	{
77	/** Pointer to the owning buslogic device instance. - R3 pointer */
78	R3PTRTYPE(struct BUSLOGIC *) pBusLogicR3;
79	/** Pointer to the owning buslogic device instance. - R0 pointer */
80	R0PTRTYPE(struct BUSLOGIC *) pBusLogicR0;
81	/** Pointer to the owning buslogic device instance. - RC pointer */
82	RCPTRTYPE(struct BUSLOGIC *) pBusLogicRC;
83
84	/** Flag whether device is present. */
85	bool fPresent;
86	/** LUN of the device. */
87	RTUINT iLUN;
88
89	#if HC_ARCH_BITS == 64
90	uint32_t Alignment0;
91	#endif
92
93	/** Our base interface. */
94	PDMIBASE IBase;
95	/** SCSI port interface. */
96	PDMISCSIPORT ISCSIPort;
97	/** Led interface. */
98	PDMILEDPORTS ILed;
99	/** Pointer to the attached driver's base interface. */
100	R3PTRTYPE(PPDMIBASE) pDrvBase;
101	/** Pointer to the underlying SCSI connector interface. */
102	R3PTRTYPE(PPDMISCSICONNECTOR) pDrvSCSIConnector;
103	/** The status LED state for this device. */
104	PDMLED Led;
105
106	#if HC_ARCH_BITS == 64
107	uint32_t Alignment1;
108	#endif
109
110	/** Number of outstanding tasks on the port. */
111	volatile uint32_t cOutstandingRequests;
112
113	} BUSLOGICDEVICE, *PBUSLOGICDEVICE;
114
115	/*
116	* Commands the BusLogic adapter supports.
117	*/
118	enum BUSLOGICCOMMAND
119	{
120	BUSLOGICCOMMAND_TEST_COMMAND_COMPLETE_INTERRUPT = 0x00,
121	BUSLOGICCOMMAND_INITIALIZE_MAILBOX = 0x01,
122	BUSLOGICCOMMAND_EXECUTE_MAILBOX_COMMAND = 0x02,
123	BUSLOGICCOMMAND_EXECUTE_BIOS_COMMAND = 0x03,
124	BUSLOGICCOMMAND_INQUIRE_BOARD_ID = 0x04,
125	BUSLOGICCOMMAND_ENABLE_OUTGOING_MAILBOX_AVAILABLE_INTERRUPT = 0x05,
126	BUSLOGICCOMMAND_SET_SCSI_SELECTION_TIMEOUT = 0x06,
127	BUSLOGICCOMMAND_SET_PREEMPT_TIME_ON_BUS = 0x07,
128	BUSLOGICCOMMAND_SET_TIME_OFF_BUS = 0x08,
129	BUSLOGICCOMMAND_SET_BUS_TRANSFER_RATE = 0x09,
130	BUSLOGICCOMMAND_INQUIRE_INSTALLED_DEVICES_ID_0_TO_7 = 0x0a,
131	BUSLOGICCOMMAND_INQUIRE_CONFIGURATION = 0x0b,
132	BUSLOGICCOMMAND_ENABLE_TARGET_MODE = 0x0c,
133	BUSLOGICCOMMAND_INQUIRE_SETUP_INFORMATION = 0x0d,
134	BUSLOGICCOMMAND_WRITE_ADAPTER_LOCAL_RAM = 0x1a,
135	BUSLOGICCOMMAND_READ_ADAPTER_LOCAL_RAM = 0x1b,
136	BUSLOGICCOMMAND_WRITE_BUSMASTER_CHIP_FIFO = 0x1c,
137	BUSLOGICCOMMAND_READ_BUSMASTER_CHIP_FIFO = 0x1d,
138	BUSLOGICCOMMAND_ECHO_COMMAND_DATA = 0x1f,
139	BUSLOGICCOMMAND_HOST_ADAPTER_DIAGNOSTIC = 0x20,
140	BUSLOGICCOMMAND_SET_ADAPTER_OPTIONS = 0x21,
141	BUSLOGICCOMMAND_INQUIRE_INSTALLED_DEVICES_ID_8_TO_15 = 0x23,
142	BUSLOGICCOMMAND_INQUIRE_TARGET_DEVICES = 0x24,
143	BUSLOGICCOMMAND_DISABLE_HOST_ADAPTER_INTERRUPT = 0x25,
144	BUSLOGICCOMMAND_EXT_BIOS_INFO = 0x28,
145	BUSLOGICCOMMAND_UNLOCK_MAILBOX = 0x29,
146	BUSLOGICCOMMAND_INITIALIZE_EXTENDED_MAILBOX = 0x81,
147	BUSLOGICCOMMAND_EXECUTE_SCSI_COMMAND = 0x83,
148	BUSLOGICCOMMAND_INQUIRE_FIRMWARE_VERSION_3RD_LETTER = 0x84,
149	BUSLOGICCOMMAND_INQUIRE_FIRMWARE_VERSION_LETTER = 0x85,
150	BUSLOGICCOMMAND_INQUIRE_PCI_HOST_ADAPTER_INFORMATION = 0x86,
151	BUSLOGICCOMMAND_INQUIRE_HOST_ADAPTER_MODEL_NUMBER = 0x8b,
152	BUSLOGICCOMMAND_INQUIRE_SYNCHRONOUS_PERIOD = 0x8c,
153	BUSLOGICCOMMAND_INQUIRE_EXTENDED_SETUP_INFORMATION = 0x8d,
154	BUSLOGICCOMMAND_ENABLE_STRICT_ROUND_ROBIN_MODE = 0x8f,
155	BUSLOGICCOMMAND_STORE_HOST_ADAPTER_LOCAL_RAM = 0x90,
156	BUSLOGICCOMMAND_FETCH_HOST_ADAPTER_LOCAL_RAM = 0x91,
157	BUSLOGICCOMMAND_STORE_LOCAL_DATA_IN_EEPROM = 0x92,
158	BUSLOGICCOMMAND_UPLOAD_AUTO_SCSI_CODE = 0x94,
159	BUSLOGICCOMMAND_MODIFY_IO_ADDRESS = 0x95,
160	BUSLOGICCOMMAND_SET_CCB_FORMAT = 0x96,
161	BUSLOGICCOMMAND_WRITE_INQUIRY_BUFFER = 0x9a,
162	BUSLOGICCOMMAND_READ_INQUIRY_BUFFER = 0x9b,
163	BUSLOGICCOMMAND_FLASH_ROM_UPLOAD_DOWNLOAD = 0xa7,
164	BUSLOGICCOMMAND_READ_SCAM_DATA = 0xa8,
165	BUSLOGICCOMMAND_WRITE_SCAM_DATA = 0xa9
166	} BUSLOGICCOMMAND;
167
168	#pragma pack(1)
169	/**
170	* Auto SCSI structure which is located
171	* in host adapter RAM and contains several
172	* configuration parameters.
173	*/
174	typedef struct AutoSCSIRam
175	{
176	uint8_t aInternalSignature[2];
177	uint8_t cbInformation;
178	uint8_t aHostAdaptertype[6];
179	uint8_t uReserved1;
180	bool fFloppyEnabled: 1;
181	bool fFloppySecondary: 1;
182	bool fLevelSensitiveInterrupt: 1;
183	unsigned char uReserved2: 2;
184	unsigned char uSystemRAMAreForBIOS: 3;
185	unsigned char uDMAChannel: 7;
186	bool fDMAAutoConfiguration: 1;
187	unsigned char uIrqChannel: 7;
188	bool fIrqAutoConfiguration: 1;
189	uint8_t uDMATransferRate;
190	uint8_t uSCSIId;
191	bool fLowByteTerminated: 1;
192	bool fParityCheckingEnabled: 1;
193	bool fHighByteTerminated: 1;
194	bool fNoisyCablingEnvironment: 1;
195	bool fFastSynchronousNeogtiation: 1;
196	bool fBusResetEnabled: 1;
197	bool fReserved3: 1;
198	bool fActiveNegotiationEnabled: 1;
199	uint8_t uBusOnDelay;
200	uint8_t uBusOffDelay;
201	bool fHostAdapterBIOSEnabled: 1;
202	bool fBIOSRedirectionOfInt19: 1;
203	bool fExtendedTranslation: 1;
204	bool fMapRemovableAsFixed: 1;
205	bool fReserved4: 1;
206	bool fBIOSSupportsMoreThan2Drives: 1;
207	bool fBIOSInterruptMode: 1;
208	bool fFlopticalSupport: 1;
209	uint16_t u16DeviceEnabledMask;
210	uint16_t u16WidePermittedMask;
211	uint16_t u16FastPermittedMask;
212	uint16_t u16SynchronousPermittedMask;
213	uint16_t u16DisconnectPermittedMask;
214	uint16_t u16SendStartUnitCommandMask;
215	uint16_t u16IgnoreInBIOSScanMask;
216	unsigned char uPCIInterruptPin: 2;
217	unsigned char uHostAdapterIoPortAddress: 2;
218	bool fStrictRoundRobinMode: 1;
219	bool fVesaBusSpeedGreaterThan33MHz: 1;
220	bool fVesaBurstWrite: 1;
221	bool fVesaBurstRead: 1;
222	uint16_t u16UltraPermittedMask;
223	uint32_t uReserved5;
224	uint8_t uReserved6;
225	uint8_t uAutoSCSIMaximumLUN;
226	bool fReserved7: 1;
227	bool fSCAMDominant: 1;
228	bool fSCAMenabled: 1;
229	bool fSCAMLevel2: 1;
230	unsigned char uReserved8: 4;
231	bool fInt13Extension: 1;
232	bool fReserved9: 1;
233	bool fCDROMBoot: 1;
234	unsigned char uReserved10: 5;
235	unsigned char uBootTargetId: 4;
236	unsigned char uBootChannel: 4;
237	bool fForceBusDeviceScanningOrder: 1;
238	unsigned char uReserved11: 7;
239	uint16_t u16NonTaggedToAlternateLunPermittedMask;
240	uint16_t u16RenegotiateSyncAfterCheckConditionMask;
241	uint8_t aReserved12[10];
242	uint8_t aManufacturingDiagnostic[2];
243	uint16_t u16Checksum;
244	} AutoSCSIRam, *PAutoSCSIRam;
245	AssertCompileSize(AutoSCSIRam, 64);
246	#pragma pack()
247
248	#pragma pack(1)
249	/**
250	* The local Ram.
251	*/
252	typedef union HostAdapterLocalRam
253	{
254	/* Byte view. */
255	uint8_t u8View[256];
256	/* Structured view. */
257	struct
258	{
259	/** Offset 0 - 63 is for BIOS. */
260	uint8_t u8Bios[64];
261	/** Auto SCSI structure. */
262	AutoSCSIRam autoSCSIData;
263	} structured;
264	} HostAdapterLocalRam, *PHostAdapterLocalRam;
265	AssertCompileSize(HostAdapterLocalRam, 256);
266	#pragma pack()
267
268	/** Pointer to a task state structure. */
269	typedef struct BUSLOGICTASKSTATE *PBUSLOGICTASKSTATE;
270
271	/**
272	* Main BusLogic device state.
273	*
274	* @extends PCIDEVICE
275	* @implements PDMILEDPORTS
276	*/
277	typedef struct BUSLOGIC
278	{
279	/** The PCI device structure. */
280	PCIDEVICE dev;
281	/** Pointer to the device instance - HC ptr */
282	PPDMDEVINSR3 pDevInsR3;
283	/** Pointer to the device instance - R0 ptr */
284	PPDMDEVINSR0 pDevInsR0;
285	/** Pointer to the device instance - RC ptr. */
286	PPDMDEVINSRC pDevInsRC;
287
288	/** Whether R0 is enabled. */
289	bool fR0Enabled;
290	/** Whether RC is enabled. */
291	bool fGCEnabled;
292
293	/** Base address of the I/O ports. */
294	RTIOPORT IOPortBase;
295	/** Base address of the memory mapping. */
296	RTGCPHYS MMIOBase;
297	/** Status register - Readonly. */
298	volatile uint8_t regStatus;
299	/** Interrupt register - Readonly. */
300	volatile uint8_t regInterrupt;
301	/** Geometry register - Readonly. */
302	volatile uint8_t regGeometry;
303
304	/** Local RAM for the fetch hostadapter local RAM request.
305	* I don't know how big the buffer really is but the maximum
306	* seems to be 256 bytes because the offset and count field in the command request
307	* are only one byte big.
308	*/
309	HostAdapterLocalRam LocalRam;
310
311	/** Command code the guest issued. */
312	uint8_t uOperationCode;
313	/** Buffer for the command parameters the adapter is currently receiving from the guest.
314	* Size of the largest command which is possible.
315	*/
316	uint8_t aCommandBuffer[BUSLOGIC_COMMAND_SIZE_MAX]; /* Size of the biggest request. */
317	/** Current position in the command buffer. */
318	uint8_t iParameter;
319	/** Parameters left until the command is complete. */
320	uint8_t cbCommandParametersLeft;
321
322	/** Whether we are using the RAM or reply buffer. */
323	bool fUseLocalRam;
324	/** Buffer to store reply data from the controller to the guest. */
325	uint8_t aReplyBuffer[BUSLOGIC_REPLY_SIZE_MAX]; /* Size of the biggest reply. */
326	/** Position in the buffer we are reading next. */
327	uint8_t iReply;
328	/** Bytes left until the reply buffer is empty. */
329	uint8_t cbReplyParametersLeft;
330
331	/** Flag whether IRQs are enabled. */
332	bool fIRQEnabled;
333	/** Flag whether the ISA I/O port range is disabled
334	* to prevent the BIOs to access the device. */
335	bool fISAEnabled;
336
337	/** Number of mailboxes the guest set up. */
338	uint32_t cMailbox;
339
340	#if HC_ARCH_BITS == 64
341	uint32_t Alignment0;
342	#endif
343
344	/** Physical base address of the outgoing mailboxes. */
345	RTGCPHYS GCPhysAddrMailboxOutgoingBase;
346	/** Current outgoing mailbox position. */
347	uint32_t uMailboxOutgoingPositionCurrent;
348	/** Number of mailboxes ready. */
349	volatile uint32_t cMailboxesReady;
350	/** Whether a notification to R3 was send. */
351	volatile bool fNotificationSend;
352
353	#if HC_ARCH_BITS == 64
354	uint32_t Alignment1;
355	#endif
356
357	/** Physical base address of the incoming mailboxes. */
358	RTGCPHYS GCPhysAddrMailboxIncomingBase;
359	/** Current incoming mailbox position. */
360	uint32_t uMailboxIncomingPositionCurrent;
361
362	/** Whether strict round robin is enabled. */
363	bool fStrictRoundRobinMode;
364	/** Whether the extended LUN CCB format is enabled for 32 possible logical units. */
365	bool fExtendedLunCCBFormat;
366
367	/** Queue to send tasks to R3. - HC ptr */
368	R3PTRTYPE(PPDMQUEUE) pNotifierQueueR3;
369	/** Queue to send tasks to R3. - HC ptr */
370	R0PTRTYPE(PPDMQUEUE) pNotifierQueueR0;
371	/** Queue to send tasks to R3. - RC ptr */
372	RCPTRTYPE(PPDMQUEUE) pNotifierQueueRC;
373
374	uint32_t Alignment2;
375
376	/** Critical section protecting access to the interrupt status register. */
377	PDMCRITSECT CritSectIntr;
378
379	/** Cache for task states. */
380	R3PTRTYPE(RTMEMCACHE) hTaskCache;
381
382	/** Device state for BIOS access. */
383	VBOXSCSI VBoxSCSI;
384
385	/** BusLogic device states. */
386	BUSLOGICDEVICE aDeviceStates[BUSLOGIC_MAX_DEVICES];
387
388	/** The base interface.
389	* @todo use PDMDEVINS::IBase */
390	PDMIBASE IBase;
391	/** Status Port - Leds interface. */
392	PDMILEDPORTS ILeds;
393	/** Partner of ILeds. */
394	R3PTRTYPE(PPDMILEDCONNECTORS) pLedsConnector;
395
396	#if HC_ARCH_BITS == 64
397	uint32_t Alignment3;
398	#endif
399
400	/** Indicates that PDMDevHlpAsyncNotificationCompleted should be called when
401	* a port is entering the idle state. */
402	bool volatile fSignalIdle;
403	/** Flag whether we have tasks which need to be processed again. */
404	bool volatile fRedo;
405	/** List of tasks which can be redone. */
406	R3PTRTYPE(volatile PBUSLOGICTASKSTATE) pTasksRedoHead;
407
408	#ifdef LOG_ENABLED
409	# if HC_ARCH_BITS == 64
410	uint32_t Alignment4;
411	# endif
412
413	volatile uint32_t cInMailboxesReady;
414	#endif
415
416	} BUSLOGIC, *PBUSLOGIC;
417
418	/** Register offsets in the I/O port space. */
419	#define BUSLOGIC_REGISTER_CONTROL 0 /* Writeonly */
420	/** Fields for the control register. */
421	# define BUSLOGIC_REGISTER_CONTROL_SCSI_BUSRESET RT_BIT(4)
422	# define BUSLOGIC_REGISTER_CONTROL_INTERRUPT_RESET RT_BIT(5)
423	# define BUSLOGIC_REGISTER_CONTROL_SOFT_RESET RT_BIT(6)
424	# define BUSLOGIC_REGISTER_CONTROL_HARD_RESET RT_BIT(7)
425
426	#define BUSLOGIC_REGISTER_STATUS 0 /* Readonly */
427	/** Fields for the status register. */
428	# define BUSLOGIC_REGISTER_STATUS_COMMAND_INVALID RT_BIT(0)
429	# define BUSLOGIC_REGISTER_STATUS_DATA_IN_REGISTER_READY RT_BIT(2)
430	# define BUSLOGIC_REGISTER_STATUS_COMMAND_PARAMETER_REGISTER_BUSY RT_BIT(3)
431	# define BUSLOGIC_REGISTER_STATUS_HOST_ADAPTER_READY RT_BIT(4)
432	# define BUSLOGIC_REGISTER_STATUS_INITIALIZATION_REQUIRED RT_BIT(5)
433	# define BUSLOGIC_REGISTER_STATUS_DIAGNOSTIC_FAILURE RT_BIT(6)
434	# define BUSLOGIC_REGISTER_STATUS_DIAGNOSTIC_ACTIVE RT_BIT(7)
435
436	#define BUSLOGIC_REGISTER_COMMAND 1 /* Writeonly */
437	#define BUSLOGIC_REGISTER_DATAIN 1 /* Readonly */
438	#define BUSLOGIC_REGISTER_INTERRUPT 2 /* Readonly */
439	/** Fields for the interrupt register. */
440	# define BUSLOGIC_REGISTER_INTERRUPT_INCOMING_MAILBOX_LOADED RT_BIT(0)
441	# define BUSLOGIC_REGISTER_INTERRUPT_OUTCOMING_MAILBOX_AVAILABLE RT_BIT(1)
442	# define BUSLOGIC_REGISTER_INTERRUPT_COMMAND_COMPLETE RT_BIT(2)
443	# define BUSLOGIC_REGISTER_INTERRUPT_EXTERNAL_BUS_RESET RT_BIT(3)
444	# define BUSLOGIC_REGISTER_INTERRUPT_INTERRUPT_VALID RT_BIT(7)
445
446	#define BUSLOGIC_REGISTER_GEOMETRY 3 /* Readonly */
447	# define BUSLOGIC_REGISTER_GEOMETRY_EXTENTED_TRANSLATION_ENABLED RT_BIT(7)
448
449	/* Structure for the INQUIRE_PCI_HOST_ADAPTER_INFORMATION reply. */
450	#pragma pack(1)
451	typedef struct ReplyInquirePCIHostAdapterInformation
452	{
453	uint8_t IsaIOPort;
454	uint8_t IRQ;
455	unsigned char LowByteTerminated:1;
456	unsigned char HighByteTerminated:1;
457	unsigned char uReserved:2; /* Reserved. */
458	unsigned char JP1:1; /* Whatever that means. */
459	unsigned char JP2:1; /* Whatever that means. */
460	unsigned char JP3:1; /* Whatever that means. */
461	/** Whether the provided info is valid. */
462	unsigned char InformationIsValid: 1;
463	uint8_t uReserved2; /* Reserved. */
464	} ReplyInquirePCIHostAdapterInformation, *PReplyInquirePCIHostAdapterInformation;
465	AssertCompileSize(ReplyInquirePCIHostAdapterInformation, 4);
466	#pragma pack()
467
468	/* Structure for the INQUIRE_CONFIGURATION reply. */
469	#pragma pack(1)
470	typedef struct ReplyInquireConfiguration
471	{
472	unsigned char uReserved1: 5;
473	bool fDmaChannel5: 1;
474	bool fDmaChannel6: 1;
475	bool fDmaChannel7: 1;
476	bool fIrqChannel9: 1;
477	bool fIrqChannel10: 1;
478	bool fIrqChannel11: 1;
479	bool fIrqChannel12: 1;
480	unsigned char uReserved2: 1;
481	bool fIrqChannel14: 1;
482	bool fIrqChannel15: 1;
483	unsigned char uReserved3: 1;
484	unsigned char uHostAdapterId: 4;
485	unsigned char uReserved4: 4;
486	} ReplyInquireConfiguration, *PReplyInquireConfiguration;
487	AssertCompileSize(ReplyInquireConfiguration, 3);
488	#pragma pack()
489
490	/* Structure for the INQUIRE_SETUP_INFORMATION reply. */
491	#pragma pack(1)
492	typedef struct ReplyInquireSetupInformationSynchronousValue
493	{
494	unsigned char uOffset: 4;
495	unsigned char uTransferPeriod: 3;
496	bool fSynchronous: 1;
497	}ReplyInquireSetupInformationSynchronousValue, *PReplyInquireSetupInformationSynchronousValue;
498	AssertCompileSize(ReplyInquireSetupInformationSynchronousValue, 1);
499	#pragma pack()
500
501	#pragma pack(1)
502	typedef struct ReplyInquireSetupInformation
503	{
504	bool fSynchronousInitiationEnabled: 1;
505	bool fParityCheckingEnabled: 1;
506	unsigned char uReserved1: 6;
507	uint8_t uBusTransferRate;
508	uint8_t uPreemptTimeOnBus;
509	uint8_t uTimeOffBus;
510	uint8_t cMailbox;
511	uint8_t MailboxAddress[3];
512	ReplyInquireSetupInformationSynchronousValue SynchronousValuesId0To7[8];
513	uint8_t uDisconnectPermittedId0To7;
514	uint8_t uSignature;
515	uint8_t uCharacterD;
516	uint8_t uHostBusType;
517	uint8_t uWideTransferPermittedId0To7;
518	uint8_t uWideTransfersActiveId0To7;
519	ReplyInquireSetupInformationSynchronousValue SynchronousValuesId8To15[8];
520	uint8_t uDisconnectPermittedId8To15;
521	uint8_t uReserved2;
522	uint8_t uWideTransferPermittedId8To15;
523	uint8_t uWideTransfersActiveId8To15;
524	} ReplyInquireSetupInformation, *PReplyInquireSetupInformation;
525	AssertCompileSize(ReplyInquireSetupInformation, 34);
526	#pragma pack()
527
528	/* Structure for the INQUIRE_EXTENDED_SETUP_INFORMATION. */
529	#pragma pack(1)
530	typedef struct ReplyInquireExtendedSetupInformation
531	{
532	uint8_t uBusType;
533	uint8_t uBiosAddress;
534	uint16_t u16ScatterGatherLimit;
535	uint8_t cMailbox;
536	uint32_t uMailboxAddressBase;
537	unsigned char uReserved1: 2;
538	bool fFastEISA: 1;
539	unsigned char uReserved2: 3;
540	bool fLevelSensitiveInterrupt: 1;
541	unsigned char uReserved3: 1;
542	unsigned char aFirmwareRevision[3];
543	bool fHostWideSCSI: 1;
544	bool fHostDifferentialSCSI: 1;
545	bool fHostSupportsSCAM: 1;
546	bool fHostUltraSCSI: 1;
547	bool fHostSmartTermination: 1;
548	unsigned char uReserved4: 3;
549	} ReplyInquireExtendedSetupInformation, *PReplyInquireExtendedSetupInformation;
550	AssertCompileSize(ReplyInquireExtendedSetupInformation, 14);
551	#pragma pack()
552
553	/* Structure for the INITIALIZE EXTENDED MAILBOX request. */
554	#pragma pack(1)
555	typedef struct RequestInitializeExtendedMailbox
556	{
557	/** Number of mailboxes in guest memory. */
558	uint8_t cMailbox;
559	/** Physical address of the first mailbox. */
560	uint32_t uMailboxBaseAddress;
561	} RequestInitializeExtendedMailbox, *PRequestInitializeExtendedMailbox;
562	AssertCompileSize(RequestInitializeExtendedMailbox, 5);
563	#pragma pack()
564
565	/*
566	* Structure of a mailbox in guest memory.
567	* The incoming and outgoing mailbox have the same size
568	* but the incoming one has some more fields defined which
569	* are marked as reserved in the outgoing one.
570	* The last field is also different from the type.
571	* For outgoing mailboxes it is the action and
572	* for incoming ones the completion status code for the task.
573	* We use one structure for both types.
574	*/
575	#pragma pack(1)
576	typedef struct Mailbox
577	{
578	/** Physical address of the CCB structure in the guest memory. */
579	uint32_t u32PhysAddrCCB;
580	/** Type specific data. */
581	union
582	{
583	/** For outgoing mailboxes. */
584	struct
585	{
586	/** Reserved */
587	uint8_t uReserved[3];
588	/** Action code. */
589	uint8_t uActionCode;
590	} out;
591	/** For incoming mailboxes. */
592	struct
593	{
594	/** The host adapter status after finishing the request. */
595	uint8_t uHostAdapterStatus;
596	/** The status of the device which executed the request after executing it. */
597	uint8_t uTargetDeviceStatus;
598	/** Reserved. */
599	uint8_t uReserved;
600	/** The completion status code of the request. */
601	uint8_t uCompletionCode;
602	} in;
603	} u;
604	} Mailbox, *PMailbox;
605	AssertCompileSize(Mailbox, 8);
606	#pragma pack()
607
608	/*
609	* Action codes for outgoing mailboxes.
610	*/
611	enum BUSLOGIC_MAILBOX_OUTGOING_ACTION
612	{
613	BUSLOGIC_MAILBOX_OUTGOING_ACTION_FREE = 0x00,
614	BUSLOGIC_MAILBOX_OUTGOING_ACTION_START_COMMAND = 0x01,
615	BUSLOGIC_MAILBOX_OUTGOING_ACTION_ABORT_COMMAND = 0x02
616	};
617
618	/*
619	* Completion codes for incoming mailboxes.
620	*/
621	enum BUSLOGIC_MAILBOX_INCOMING_COMPLETION
622	{
623	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_FREE = 0x00,
624	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_WITHOUT_ERROR = 0x01,
625	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_ABORTED = 0x02,
626	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_ABORTED_NOT_FOUND = 0x03,
627	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_WITH_ERROR = 0x04,
628	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_INVALID_CCB = 0x05
629	};
630
631	/*
632	* Host adapter status for incoming mailboxes.
633	*/
634	enum BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS
635	{
636	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_CMD_COMPLETED = 0x00,
637	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_LINKED_CMD_COMPLETED = 0x0a,
638	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_LINKED_CMD_COMPLETED_WITH_FLAG = 0x0b,
639	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_DATA_UNDERUN = 0x0c,
640	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_SCSI_SELECTION_TIMEOUT = 0x11,
641	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_DATA_OVERRUN = 0x12,
642	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_UNEXPECTED_BUS_FREE = 0x13,
643	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_INVALID_BUS_PHASE_REQUESTED = 0x14,
644	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_INVALID_OUTGOING_MAILBOX_ACTION_CODE = 0x15,
645	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_INVALID_COMMAND_OPERATION_CODE = 0x16,
646	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_LINKED_CCB_HAS_INVALID_LUN = 0x17,
647	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_INVALID_COMMAND_PARAMETER = 0x1a,
648	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_AUTO_REQUEST_SENSE_FAILED = 0x1b,
649	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_TAGGED_QUEUING_MESSAGE_REJECTED = 0x1c,
650	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_UNSUPPORTED_MESSAGE_RECEIVED = 0x1d,
651	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_HOST_ADAPTER_HARDWARE_FAILED = 0x20,
652	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_TARGET_FAILED_RESPONSE_TO_ATN = 0x21,
653	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_HOST_ADAPTER_ASSERTED_RST = 0x22,
654	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_OTHER_DEVICE_ASSERTED_RST = 0x23,
655	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_TARGET_DEVICE_RECONNECTED_IMPROPERLY = 0x24,
656	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_HOST_ADAPTER_ASSERTED_BUS_DEVICE_RESET = 0x25,
657	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_ABORT_QUEUE_GENERATED = 0x26,
658	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_HOST_ADAPTER_SOFTWARE_ERROR = 0x27,
659	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_HOST_ADAPTER_HARDWARE_TIMEOUT_ERROR = 0x30,
660	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_SCSI_PARITY_ERROR_DETECTED = 0x34
661	};
662
663	/*
664	* Device status codes for incoming mailboxes.
665	*/
666	enum BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS
667	{
668	BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS_OPERATION_GOOD = 0x00,
669	BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS_CHECK_CONDITION = 0x02,
670	BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS_DEVICE_BUSY = 0x08
671	};
672
673	/*
674	* Opcode types for CCB.
675	*/
676	enum BUSLOGIC_CCB_OPCODE
677	{
678	BUSLOGIC_CCB_OPCODE_INITIATOR_CCB = 0x00,
679	BUSLOGIC_CCB_OPCODE_TARGET_CCB = 0x01,
680	BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_SCATTER_GATHER = 0x02,
681	BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_RESIDUAL_DATA_LENGTH = 0x03,
682	BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_RESIDUAL_SCATTER_GATHER = 0x04,
683	BUSLOGIC_CCB_OPCODE_BUS_DEVICE_RESET = 0x81
684	};
685
686	/*
687	* Data transfer direction.
688	*/
689	enum BUSLOGIC_CCB_DIRECTION
690	{
691	BUSLOGIC_CCB_DIRECTION_UNKNOWN = 0x00,
692	BUSLOGIC_CCB_DIRECTION_IN = 0x01,
693	BUSLOGIC_CCB_DIRECTION_OUT = 0x02,
694	BUSLOGIC_CCB_DIRECTION_NO_DATA = 0x03
695	};
696
697	/*
698	* The command control block for a SCSI request.
699	*/
700	#pragma pack(1)
701	typedef struct CommandControlBlock
702	{
703	/** Opcode. */
704	uint8_t uOpcode;
705	/** Reserved */
706	unsigned char uReserved1: 3;
707	/** Data direction for the request. */
708	unsigned char uDataDirection: 2;
709	/** Whether the request is tag queued. */
710	bool fTagQueued: 1;
711	/** Queue tag mode. */
712	unsigned char uQueueTag: 2;
713	/** Length of the SCSI CDB. */
714	uint8_t cbCDB;
715	/** Sense data length. */
716	uint8_t cbSenseData;
717	/** Data length. */
718	uint32_t cbData;
719	/** Data pointer.
720	* This points to the data region or a scatter gather list based on the opcode.
721	*/
722	uint32_t u32PhysAddrData;
723	/** Reserved. */
724	uint8_t uReserved2[2];
725	/** Host adapter status. */
726	uint8_t uHostAdapterStatus;
727	/** Device adapter status. */
728	uint8_t uDeviceStatus;
729	/** The device the request is send to. */
730	uint8_t uTargetId;
731	/*The LUN in the device. /
732	unsigned char uLogicalUnit: 5;
733	/** Legacy tag. */
734	bool fLegacyTagEnable: 1;
735	/** Legacy queue tag. */
736	unsigned char uLegacyQueueTag: 2;
737	/** The SCSI CDB. */
738	uint8_t aCDB[12]; /* A CDB can be 12 bytes long. */
739	/** Reserved. */
740	uint8_t uReserved3[6];
741	/** Sense data pointer. */
742	uint32_t u32PhysAddrSenseData;
743	} CommandControlBlock, *PCommandControlBlock;
744	AssertCompileSize(CommandControlBlock, 40);
745	#pragma pack()
746
747	#pragma pack(1)
748	typedef struct ScatterGatherEntry
749	{
750	uint32_t cbSegment;
751	uint32_t u32PhysAddrSegmentBase;
752	} ScatterGatherEntry, *PScatterGatherEntry;
753	AssertCompileSize(ScatterGatherEntry, 8);
754	#pragma pack()
755
756	/*
757	* Task state for a CCB request.
758	*/
759	typedef struct BUSLOGICTASKSTATE
760	{
761	/** Next in the redo list. */
762	PBUSLOGICTASKSTATE pRedoNext;
763	/** Device this task is assigned to. */
764	R3PTRTYPE(PBUSLOGICDEVICE) pTargetDeviceR3;
765	/** The command control block from the guest. */
766	CommandControlBlock CommandControlBlockGuest;
767	/** Mailbox read from guest memory. */
768	Mailbox MailboxGuest;
769	/** The SCSI request we pass to the underlying SCSI engine. */
770	PDMSCSIREQUEST PDMScsiRequest;
771	/** Data buffer segment */
772	RTSGSEG DataSeg;
773	/** Pointer to the R3 sense buffer. */
774	uint8_t *pbSenseBuffer;
775	/** Flag whether this is a request from the BIOS. */
776	bool fBIOS;
777	} BUSLOGICTASKSTATE;
778
779	#ifndef VBOX_DEVICE_STRUCT_TESTCASE
780
781	#define PDMIBASE_2_PBUSLOGICDEVICE(pInterface) ( (PBUSLOGICDEVICE)((uintptr_t)(pInterface) - RT_OFFSETOF(BUSLOGICDEVICE, IBase)) )
782	#define PDMISCSIPORT_2_PBUSLOGICDEVICE(pInterface) ( (PBUSLOGICDEVICE)((uintptr_t)(pInterface) - RT_OFFSETOF(BUSLOGICDEVICE, ISCSIPort)) )
783	#define PDMILEDPORTS_2_PBUSLOGICDEVICE(pInterface) ( (PBUSLOGICDEVICE)((uintptr_t)(pInterface) - RT_OFFSETOF(BUSLOGICDEVICE, ILed)) )
784	#define PDMIBASE_2_PBUSLOGIC(pInterface) ( (PBUSLOGIC)((uintptr_t)(pInterface) - RT_OFFSETOF(BUSLOGIC, IBase)) )
785	#define PDMILEDPORTS_2_PBUSLOGIC(pInterface) ( (PBUSLOGIC)((uintptr_t)(pInterface) - RT_OFFSETOF(BUSLOGIC, ILeds)) )
786
787	/**
788	* Deasserts the interrupt line of the BusLogic adapter.
789	*
790	* @returns nothing
791	* @param pBuslogic Pointer to the BusLogic device instance.
792	*/
793	static void buslogicClearInterrupt(PBUSLOGIC pBusLogic)
794	{
795	LogFlowFunc(("pBusLogic=%#p\n", pBusLogic));
796	pBusLogic->regInterrupt = 0;
797	PDMDevHlpPCISetIrq(pBusLogic->CTX_SUFF(pDevIns), 0, 0);
798	}
799
800	/**
801	* Assert IRQ line of the BusLogic adapter.
802	*
803	* @returns nothing.
804	* @param pBusLogic Pointer to the BusLogic device instance.
805	* @param fSuppressIrq Flag to suppress IRQ generation regardless of fIRQEnabled
806	*/
807	static void buslogicSetInterrupt(PBUSLOGIC pBusLogic, bool fSuppressIrq)
808	{
809	LogFlowFunc(("pBusLogic=%#p\n", pBusLogic));
810	pBusLogic->regInterrupt \|= BUSLOGIC_REGISTER_INTERRUPT_INTERRUPT_VALID;
811	if (pBusLogic->fIRQEnabled && !fSuppressIrq)
812	PDMDevHlpPCISetIrq(pBusLogic->CTX_SUFF(pDevIns), 0, 1);
813	}
814
815	#if defined(IN_RING3)
816
817	/**
818	* Advances the mailbox pointer to the next slot.
819	*/
820	DECLINLINE(void) buslogicOutgoingMailboxAdvance(PBUSLOGIC pBusLogic)
821	{
822	pBusLogic->uMailboxOutgoingPositionCurrent = (pBusLogic->uMailboxOutgoingPositionCurrent + 1) % pBusLogic->cMailbox;
823	}
824
825	/**
826	* Returns the physical address of the next outgoing mailbox to process.
827	*/
828	DECLINLINE(RTGCPHYS) buslogicOutgoingMailboxGetGCPhys(PBUSLOGIC pBusLogic)
829	{
830	return pBusLogic->GCPhysAddrMailboxOutgoingBase + (pBusLogic->uMailboxOutgoingPositionCurrent * sizeof(Mailbox));
831	}
832
833	/**
834	* Initialize local RAM of host adapter with default values.
835	*
836	* @returns nothing.
837	* @param pBusLogic.
838	*/
839	static void buslogicInitializeLocalRam(PBUSLOGIC pBusLogic)
840	{
841	/*
842	* These values are mostly from what I think is right
843	* looking at the dmesg output from a Linux guest inside
844	* a VMware server VM.
845	*
846	* So they don't have to be right :)
847	*/
848	memset(pBusLogic->LocalRam.u8View, 0, sizeof(HostAdapterLocalRam));
849	pBusLogic->LocalRam.structured.autoSCSIData.fLevelSensitiveInterrupt = true;
850	pBusLogic->LocalRam.structured.autoSCSIData.fParityCheckingEnabled = true;
851	pBusLogic->LocalRam.structured.autoSCSIData.fExtendedTranslation = true; /* Same as in geometry register. */
852	pBusLogic->LocalRam.structured.autoSCSIData.u16DeviceEnabledMask = ~0; /* All enabled. Maybe mask out non present devices? */
853	pBusLogic->LocalRam.structured.autoSCSIData.u16WidePermittedMask = ~0;
854	pBusLogic->LocalRam.structured.autoSCSIData.u16FastPermittedMask = ~0;
855	pBusLogic->LocalRam.structured.autoSCSIData.u16SynchronousPermittedMask = ~0;
856	pBusLogic->LocalRam.structured.autoSCSIData.u16DisconnectPermittedMask = ~0;
857	pBusLogic->LocalRam.structured.autoSCSIData.fStrictRoundRobinMode = pBusLogic->fStrictRoundRobinMode;
858	pBusLogic->LocalRam.structured.autoSCSIData.u16UltraPermittedMask = ~0;
859	/* @todo calculate checksum? */
860	}
861
862	/**
863	* Do a hardware reset of the buslogic adapter.
864	*
865	* @returns VBox status code.
866	* @param pBusLogic Pointer to the BusLogic device instance.
867	*/
868	static int buslogicHwReset(PBUSLOGIC pBusLogic)
869	{
870	LogFlowFunc(("pBusLogic=%#p\n", pBusLogic));
871
872	/* Reset registers to default value. */
873	pBusLogic->regStatus = BUSLOGIC_REGISTER_STATUS_HOST_ADAPTER_READY \| BUSLOGIC_REGISTER_STATUS_INITIALIZATION_REQUIRED;
874	pBusLogic->regInterrupt = 0;
875	pBusLogic->regGeometry = BUSLOGIC_REGISTER_GEOMETRY_EXTENTED_TRANSLATION_ENABLED;
876	pBusLogic->uOperationCode = 0xff; /* No command executing. */
877	pBusLogic->iParameter = 0;
878	pBusLogic->cbCommandParametersLeft = 0;
879	pBusLogic->fIRQEnabled = true;
880	pBusLogic->fISAEnabled = true;
881	pBusLogic->uMailboxOutgoingPositionCurrent = 0;
882	pBusLogic->uMailboxIncomingPositionCurrent = 0;
883
884	buslogicInitializeLocalRam(pBusLogic);
885	vboxscsiInitialize(&pBusLogic->VBoxSCSI);
886
887	return VINF_SUCCESS;
888	}
889	#endif
890
891	/**
892	* Resets the command state machine for the next command and notifies the guest.
893	*
894	* @returns nothing.
895	* @param pBusLogic Pointer to the BusLogic device instance
896	* @param fSuppressIrq Flag to suppress IRQ generation regardless of current state
897	*/
898	static void buslogicCommandComplete(PBUSLOGIC pBusLogic, bool fSuppressIrq)
899	{
900	LogFlowFunc(("pBusLogic=%#p\n", pBusLogic));
901
902	pBusLogic->fUseLocalRam = false;
903	pBusLogic->regStatus \|= BUSLOGIC_REGISTER_STATUS_HOST_ADAPTER_READY;
904	pBusLogic->iReply = 0;
905
906	/* Modify I/O address does not generate an interrupt. */
907	if (pBusLogic->uOperationCode != BUSLOGICCOMMAND_EXECUTE_MAILBOX_COMMAND)
908	{
909	/* Notify that the command is complete. */
910	pBusLogic->regStatus &= ~BUSLOGIC_REGISTER_STATUS_DATA_IN_REGISTER_READY;
911	pBusLogic->regInterrupt \|= BUSLOGIC_REGISTER_INTERRUPT_COMMAND_COMPLETE;
912
913	buslogicSetInterrupt(pBusLogic, fSuppressIrq);
914	}
915
916	pBusLogic->uOperationCode = 0xff;
917	pBusLogic->iParameter = 0;
918	}
919
920	#if defined(IN_RING3)
921	/**
922	* Initiates a hard reset which was issued from the guest.
923	*
924	* @returns nothing
925	* @param pBusLogic Pointer to the BusLogic device instance.
926	*/
927	static void buslogicIntiateHardReset(PBUSLOGIC pBusLogic)
928	{
929	LogFlowFunc(("pBusLogic=%#p\n", pBusLogic));
930
931	buslogicHwReset(pBusLogic);
932
933	/* We set the diagnostic active in the status register. */
934	pBusLogic->regStatus \|= BUSLOGIC_REGISTER_STATUS_DIAGNOSTIC_ACTIVE;
935	}
936
937	/**
938	* Send a mailbox with set status codes to the guest.
939	*
940	* @returns nothing.
941	* @param pBusLogic Pointer to the BusLogic device instance.
942	* @param pTaskState Pointer to the task state with the mailbox to send.
943	* @param uHostAdapterStatus The host adapter status code to set.
944	* @param uDeviceStatus The target device status to set.
945	* @param uMailboxCompletionCode Completion status code to set in the mailbox.
946	*/
947	static void buslogicSendIncomingMailbox(PBUSLOGIC pBusLogic, PBUSLOGICTASKSTATE pTaskState,
948	uint8_t uHostAdapterStatus, uint8_t uDeviceStatus,
949	uint8_t uMailboxCompletionCode)
950	{
951	pTaskState->MailboxGuest.u.in.uHostAdapterStatus = uHostAdapterStatus;
952	pTaskState->MailboxGuest.u.in.uTargetDeviceStatus = uDeviceStatus;
953	pTaskState->MailboxGuest.u.in.uCompletionCode = uMailboxCompletionCode;
954
955	int rc = PDMCritSectEnter(&pBusLogic->CritSectIntr, VINF_SUCCESS);
956	AssertRC(rc);
957	RTGCPHYS GCPhysAddrMailboxIncoming = pBusLogic->GCPhysAddrMailboxIncomingBase + (pBusLogic->uMailboxIncomingPositionCurrent * sizeof(Mailbox));
958	RTGCPHYS GCPhysAddrCCB = (RTGCPHYS)pTaskState->MailboxGuest.u32PhysAddrCCB;
959
960	LogFlowFunc(("Completing CCB %RGp\n", GCPhysAddrCCB));
961
962	/* Update CCB. */
963	pTaskState->CommandControlBlockGuest.uHostAdapterStatus = uHostAdapterStatus;
964	pTaskState->CommandControlBlockGuest.uDeviceStatus = uDeviceStatus;
965	/* @todo: this is wrong - writing too much! */
966	PDMDevHlpPhysWrite(pBusLogic->CTX_SUFF(pDevIns), GCPhysAddrCCB, &pTaskState->CommandControlBlockGuest, sizeof(CommandControlBlock));
967
968	#ifdef RT_STRICT
969	Mailbox Tmp;
970	PDMDevHlpPhysRead(pBusLogic->CTX_SUFF(pDevIns), GCPhysAddrMailboxIncoming, &Tmp, sizeof(Mailbox));
971	Assert(Tmp.u.in.uCompletionCode == BUSLOGIC_MAILBOX_INCOMING_COMPLETION_FREE);
972	#endif
973
974	/* Update mailbox. */
975	PDMDevHlpPhysWrite(pBusLogic->CTX_SUFF(pDevIns), GCPhysAddrMailboxIncoming, &pTaskState->MailboxGuest, sizeof(Mailbox));
976
977	/* Advance to next mailbox position. */
978	pBusLogic->uMailboxIncomingPositionCurrent++;
979	if (pBusLogic->uMailboxIncomingPositionCurrent >= pBusLogic->cMailbox)
980	pBusLogic->uMailboxIncomingPositionCurrent = 0;
981
982	#ifdef LOG_ENABLED
983	ASMAtomicIncU32(&pBusLogic->cInMailboxesReady);
984	#endif
985
986	pBusLogic->regInterrupt \|= BUSLOGIC_REGISTER_INTERRUPT_INCOMING_MAILBOX_LOADED;
987	buslogicSetInterrupt(pBusLogic, false);
988
989	PDMCritSectLeave(&pBusLogic->CritSectIntr);
990	}
991
992	#if defined(DEBUG)
993	/**
994	* Dumps the content of a mailbox for debugging purposes.
995	*
996	* @return nothing
997	* @param pMailbox The mailbox to dump.
998	* @param fOutgoing true if dumping the outgoing state.
999	* false if dumping the incoming state.
1000	*/
1001	static void buslogicDumpMailboxInfo(PMailbox pMailbox, bool fOutgoing)
1002	{
1003	Log(("%s: Dump for %s mailbox:\n", __FUNCTION__, fOutgoing ? "outgoing" : "incoming"));
1004	Log(("%s: u32PhysAddrCCB=%#x\n", __FUNCTION__, pMailbox->u32PhysAddrCCB));
1005	if (fOutgoing)
1006	{
1007	Log(("%s: uActionCode=%u\n", __FUNCTION__, pMailbox->u.out.uActionCode));
1008	}
1009	else
1010	{
1011	Log(("%s: uHostAdapterStatus=%u\n", __FUNCTION__, pMailbox->u.in.uHostAdapterStatus));
1012	Log(("%s: uTargetDeviceStatus=%u\n", __FUNCTION__, pMailbox->u.in.uTargetDeviceStatus));
1013	Log(("%s: uCompletionCode=%u\n", __FUNCTION__, pMailbox->u.in.uCompletionCode));
1014	}
1015	}
1016
1017	/**
1018	* Dumps the content of a command control block for debugging purposes.
1019	*
1020	* @returns nothing.
1021	* @param pCCB Pointer to the command control block to dump.
1022	*/
1023	static void buslogicDumpCCBInfo(PCommandControlBlock pCCB)
1024	{
1025	Log(("%s: Dump for Command Control Block:\n", __FUNCTION__));
1026	Log(("%s: uOpCode=%#x\n", __FUNCTION__, pCCB->uOpcode));
1027	Log(("%s: uDataDirection=%u\n", __FUNCTION__, pCCB->uDataDirection));
1028	Log(("%s: fTagQueued=%d\n", __FUNCTION__, pCCB->fTagQueued));
1029	Log(("%s: uQueueTag=%u\n", __FUNCTION__, pCCB->uQueueTag));
1030	Log(("%s: cbCDB=%u\n", __FUNCTION__, pCCB->cbCDB));
1031	Log(("%s: cbSenseData=%u\n", __FUNCTION__, pCCB->cbSenseData));
1032	Log(("%s: cbData=%u\n", __FUNCTION__, pCCB->cbData));
1033	Log(("%s: u32PhysAddrData=%#x\n", __FUNCTION__, pCCB->u32PhysAddrData));
1034	Log(("%s: uHostAdapterStatus=%u\n", __FUNCTION__, pCCB->uHostAdapterStatus));
1035	Log(("%s: uDeviceStatus=%u\n", __FUNCTION__, pCCB->uDeviceStatus));
1036	Log(("%s: uTargetId=%u\n", __FUNCTION__, pCCB->uTargetId));
1037	Log(("%s: uLogicalUnit=%u\n", __FUNCTION__, pCCB->uLogicalUnit));
1038	Log(("%s: fLegacyTagEnable=%u\n", __FUNCTION__, pCCB->fLegacyTagEnable));
1039	Log(("%s: uLegacyQueueTag=%u\n", __FUNCTION__, pCCB->uLegacyQueueTag));
1040	Log(("%s: uCDB[0]=%#x\n", __FUNCTION__, pCCB->aCDB[0]));
1041	for (int i = 1; i < pCCB->cbCDB; i++)
1042	Log(("%s: uCDB[%d]=%u\n", __FUNCTION__, i, pCCB->aCDB[i]));
1043	Log(("%s: u32PhysAddrSenseData=%#x\n", __FUNCTION__, pCCB->u32PhysAddrSenseData));
1044	}
1045	#endif
1046
1047	/**
1048	* Allocate data buffer.
1049	*
1050	* @returns VBox status code.
1051	* @param pTaskState Pointer to the task state.
1052	*/
1053	static int buslogicDataBufferAlloc(PBUSLOGICTASKSTATE pTaskState)
1054	{
1055	PPDMDEVINS pDevIns = pTaskState->CTX_SUFF(pTargetDevice)->CTX_SUFF(pBusLogic)->CTX_SUFF(pDevIns);
1056
1057	if ( (pTaskState->CommandControlBlockGuest.uDataDirection != BUSLOGIC_CCB_DIRECTION_NO_DATA)
1058	&& (pTaskState->CommandControlBlockGuest.cbData > 0))
1059	{
1060	/*
1061	* @todo: Check following assumption and what residual means.
1062	*
1063	* The BusLogic adapter can handle two different data buffer formats.
1064	* The first one is that the data pointer entry in the CCB points to
1065	* the buffer directly. In second mode the data pointer points to a
1066	* scatter gather list which describes the buffer.
1067	*/
1068	if ( (pTaskState->CommandControlBlockGuest.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_SCATTER_GATHER)
1069	\|\| (pTaskState->CommandControlBlockGuest.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_RESIDUAL_SCATTER_GATHER))
1070	{
1071	uint32_t cScatterGatherGCRead;
1072	uint32_t iScatterGatherEntry;
1073	ScatterGatherEntry aScatterGatherReadGC[32]; /* Number of scatter gather list entries read from guest memory. */
1074	uint32_t cScatterGatherGCLeft = pTaskState->CommandControlBlockGuest.cbData / sizeof(ScatterGatherEntry);
1075	RTGCPHYS GCPhysAddrScatterGatherCurrent = (RTGCPHYS)pTaskState->CommandControlBlockGuest.u32PhysAddrData;
1076	size_t cbDataToTransfer = 0;
1077
1078	/* Count number of bytes to transfer. */
1079	do
1080	{
1081	cScatterGatherGCRead = (cScatterGatherGCLeft < RT_ELEMENTS(aScatterGatherReadGC))
1082	? cScatterGatherGCLeft
1083	: RT_ELEMENTS(aScatterGatherReadGC);
1084	cScatterGatherGCLeft -= cScatterGatherGCRead;
1085
1086	/* Read the SG entries. */
1087	PDMDevHlpPhysRead(pDevIns, GCPhysAddrScatterGatherCurrent, &aScatterGatherReadGC[0],
1088	cScatterGatherGCRead * sizeof(ScatterGatherEntry));
1089
1090	for (iScatterGatherEntry = 0; iScatterGatherEntry < cScatterGatherGCRead; iScatterGatherEntry++)
1091	{
1092	RTGCPHYS GCPhysAddrDataBase;
1093
1094	Log(("%s: iScatterGatherEntry=%u\n", __FUNCTION__, iScatterGatherEntry));
1095
1096	GCPhysAddrDataBase = (RTGCPHYS)aScatterGatherReadGC[iScatterGatherEntry].u32PhysAddrSegmentBase;
1097	cbDataToTransfer += aScatterGatherReadGC[iScatterGatherEntry].cbSegment;
1098
1099	Log(("%s: GCPhysAddrDataBase=%RGp cbDataToTransfer=%u\n",
1100	__FUNCTION__, GCPhysAddrDataBase,
1101	aScatterGatherReadGC[iScatterGatherEntry].cbSegment));
1102	}
1103
1104	/* Set address to the next entries to read. */
1105	GCPhysAddrScatterGatherCurrent += cScatterGatherGCRead * sizeof(ScatterGatherEntry);
1106	} while (cScatterGatherGCLeft > 0);
1107
1108	Log(("%s: cbDataToTransfer=%d\n", __FUNCTION__, cbDataToTransfer));
1109
1110	/* Allocate buffer */
1111	pTaskState->DataSeg.cbSeg = cbDataToTransfer;
1112	pTaskState->DataSeg.pvSeg = RTMemAlloc(pTaskState->DataSeg.cbSeg);
1113	if (!pTaskState->DataSeg.pvSeg)
1114	return VERR_NO_MEMORY;
1115
1116	/* Copy the data if needed */
1117	if (pTaskState->CommandControlBlockGuest.uDataDirection == BUSLOGIC_CCB_DIRECTION_OUT)
1118	{
1119	cScatterGatherGCLeft = pTaskState->CommandControlBlockGuest.cbData / sizeof(ScatterGatherEntry);
1120	GCPhysAddrScatterGatherCurrent = (RTGCPHYS)pTaskState->CommandControlBlockGuest.u32PhysAddrData;
1121	uint8_t pbData = (uint8_t )pTaskState->DataSeg.pvSeg;
1122
1123	do
1124	{
1125	cScatterGatherGCRead = (cScatterGatherGCLeft < RT_ELEMENTS(aScatterGatherReadGC))
1126	? cScatterGatherGCLeft
1127	: RT_ELEMENTS(aScatterGatherReadGC);
1128	cScatterGatherGCLeft -= cScatterGatherGCRead;
1129
1130	/* Read the SG entries. */
1131	PDMDevHlpPhysRead(pDevIns, GCPhysAddrScatterGatherCurrent, &aScatterGatherReadGC[0],
1132	cScatterGatherGCRead * sizeof(ScatterGatherEntry));
1133
1134	for (iScatterGatherEntry = 0; iScatterGatherEntry < cScatterGatherGCRead; iScatterGatherEntry++)
1135	{
1136	RTGCPHYS GCPhysAddrDataBase;
1137
1138	Log(("%s: iScatterGatherEntry=%u\n", __FUNCTION__, iScatterGatherEntry));
1139
1140	GCPhysAddrDataBase = (RTGCPHYS)aScatterGatherReadGC[iScatterGatherEntry].u32PhysAddrSegmentBase;
1141	cbDataToTransfer = aScatterGatherReadGC[iScatterGatherEntry].cbSegment;
1142
1143	Log(("%s: GCPhysAddrDataBase=%RGp cbDataToTransfer=%u\n", __FUNCTION__, GCPhysAddrDataBase, cbDataToTransfer));
1144
1145	PDMDevHlpPhysRead(pDevIns, GCPhysAddrDataBase, pbData, cbDataToTransfer);
1146	pbData += cbDataToTransfer;
1147	}
1148
1149	/* Set address to the next entries to read. */
1150	GCPhysAddrScatterGatherCurrent += cScatterGatherGCRead * sizeof(ScatterGatherEntry);
1151	} while (cScatterGatherGCLeft > 0);
1152	}
1153
1154	}
1155	else if ( pTaskState->CommandControlBlockGuest.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB
1156	\|\| pTaskState->CommandControlBlockGuest.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_RESIDUAL_DATA_LENGTH)
1157	{
1158	/* The buffer is not scattered. */
1159	RTGCPHYS GCPhysAddrDataBase = (RTGCPHYS)pTaskState->CommandControlBlockGuest.u32PhysAddrData;
1160
1161	AssertMsg(GCPhysAddrDataBase != 0, ("Physical address is 0\n"));
1162
1163	pTaskState->DataSeg.cbSeg = pTaskState->CommandControlBlockGuest.cbData;
1164	pTaskState->DataSeg.pvSeg = RTMemAlloc(pTaskState->DataSeg.cbSeg);
1165	if (!pTaskState->DataSeg.pvSeg)
1166	return VERR_NO_MEMORY;
1167
1168	Log(("Non scattered buffer:\n"));
1169	Log(("u32PhysAddrData=%#x\n", pTaskState->CommandControlBlockGuest.u32PhysAddrData));
1170	Log(("cbData=%u\n", pTaskState->CommandControlBlockGuest.cbData));
1171	Log(("GCPhysAddrDataBase=0x%RGp\n", GCPhysAddrDataBase));
1172
1173	/* Copy the data into the buffer. */
1174	PDMDevHlpPhysRead(pDevIns, GCPhysAddrDataBase, pTaskState->DataSeg.pvSeg, pTaskState->DataSeg.cbSeg);
1175	}
1176	}
1177
1178	return VINF_SUCCESS;
1179	}
1180
1181	/**
1182	* Free allocated resources used for the scatter gather list.
1183	*
1184	* @returns nothing.
1185	* @param pTaskState Pointer to the task state.
1186	*/
1187	static void buslogicDataBufferFree(PBUSLOGICTASKSTATE pTaskState)
1188	{
1189	PPDMDEVINS pDevIns = pTaskState->CTX_SUFF(pTargetDevice)->CTX_SUFF(pBusLogic)->CTX_SUFF(pDevIns);
1190
1191	if ( (pTaskState->CommandControlBlockGuest.cbData > 0)
1192	&& ( (pTaskState->CommandControlBlockGuest.uDataDirection == BUSLOGIC_CCB_DIRECTION_IN)
1193	\|\| (pTaskState->CommandControlBlockGuest.uDataDirection == BUSLOGIC_CCB_DIRECTION_UNKNOWN)))
1194	{
1195	if ( (pTaskState->CommandControlBlockGuest.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_SCATTER_GATHER)
1196	\|\| (pTaskState->CommandControlBlockGuest.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_RESIDUAL_SCATTER_GATHER))
1197	{
1198	uint32_t cScatterGatherGCRead;
1199	uint32_t iScatterGatherEntry;
1200	ScatterGatherEntry aScatterGatherReadGC[32]; /* Number of scatter gather list entries read from guest memory. */
1201	uint32_t cScatterGatherGCLeft = pTaskState->CommandControlBlockGuest.cbData / sizeof(ScatterGatherEntry);
1202	RTGCPHYS GCPhysAddrScatterGatherCurrent = (RTGCPHYS)pTaskState->CommandControlBlockGuest.u32PhysAddrData;
1203	uint8_t pbData = (uint8_t )pTaskState->DataSeg.pvSeg;
1204
1205	do
1206	{
1207	cScatterGatherGCRead = (cScatterGatherGCLeft < RT_ELEMENTS(aScatterGatherReadGC))
1208	? cScatterGatherGCLeft
1209	: RT_ELEMENTS(aScatterGatherReadGC);
1210	cScatterGatherGCLeft -= cScatterGatherGCRead;
1211
1212	/* Read the SG entries. */
1213	PDMDevHlpPhysRead(pDevIns, GCPhysAddrScatterGatherCurrent, &aScatterGatherReadGC[0],
1214	cScatterGatherGCRead * sizeof(ScatterGatherEntry));
1215
1216	for (iScatterGatherEntry = 0; iScatterGatherEntry < cScatterGatherGCRead; iScatterGatherEntry++)
1217	{
1218	RTGCPHYS GCPhysAddrDataBase;
1219	size_t cbDataToTransfer;
1220
1221	Log(("%s: iScatterGatherEntry=%u\n", __FUNCTION__, iScatterGatherEntry));
1222
1223	GCPhysAddrDataBase = (RTGCPHYS)aScatterGatherReadGC[iScatterGatherEntry].u32PhysAddrSegmentBase;
1224	cbDataToTransfer = aScatterGatherReadGC[iScatterGatherEntry].cbSegment;
1225
1226	Log(("%s: GCPhysAddrDataBase=%RGp cbDataToTransfer=%u\n", __FUNCTION__, GCPhysAddrDataBase, cbDataToTransfer));
1227
1228	PDMDevHlpPhysWrite(pDevIns, GCPhysAddrDataBase, pbData, cbDataToTransfer);
1229	pbData += cbDataToTransfer;
1230	}
1231
1232	/* Set address to the next entries to read. */
1233	GCPhysAddrScatterGatherCurrent += cScatterGatherGCRead * sizeof(ScatterGatherEntry);
1234	} while (cScatterGatherGCLeft > 0);
1235
1236	}
1237	else if ( pTaskState->CommandControlBlockGuest.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB
1238	\|\| pTaskState->CommandControlBlockGuest.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_RESIDUAL_DATA_LENGTH)
1239	{
1240	/* The buffer is not scattered. */
1241	RTGCPHYS GCPhysAddrDataBase = (RTGCPHYS)pTaskState->CommandControlBlockGuest.u32PhysAddrData;
1242
1243	AssertMsg(GCPhysAddrDataBase != 0, ("Physical address is 0\n"));
1244
1245	Log(("Non scattered buffer:\n"));
1246	Log(("u32PhysAddrData=%#x\n", pTaskState->CommandControlBlockGuest.u32PhysAddrData));
1247	Log(("cbData=%u\n", pTaskState->CommandControlBlockGuest.cbData));
1248	Log(("GCPhysAddrDataBase=0x%RGp\n", GCPhysAddrDataBase));
1249
1250	/* Copy the data into the guest memory. */
1251	PDMDevHlpPhysWrite(pDevIns, GCPhysAddrDataBase, pTaskState->DataSeg.pvSeg, pTaskState->DataSeg.cbSeg);
1252	}
1253	}
1254
1255	RTMemFree(pTaskState->DataSeg.pvSeg);
1256	pTaskState->DataSeg.pvSeg = NULL;
1257	pTaskState->DataSeg.cbSeg = 0;
1258	}
1259
1260	/**
1261	* Free the sense buffer.
1262	*
1263	* @returns nothing.
1264	* @param pTaskState Pointer to the task state.
1265	* @param fCopy If sense data should be copied to guest memory.
1266	*/
1267	static void buslogicSenseBufferFree(PBUSLOGICTASKSTATE pTaskState, bool fCopy)
1268	{
1269	PPDMDEVINS pDevIns = pTaskState->CTX_SUFF(pTargetDevice)->CTX_SUFF(pBusLogic)->CTX_SUFF(pDevIns);
1270	RTGCPHYS GCPhysAddrSenseBuffer = (RTGCPHYS)pTaskState->CommandControlBlockGuest.u32PhysAddrSenseData;
1271	uint32_t cbSenseBuffer = pTaskState->CommandControlBlockGuest.cbSenseData;
1272
1273	/* Copy into guest memory. */
1274	if (fCopy)
1275	PDMDevHlpPhysWrite(pDevIns, GCPhysAddrSenseBuffer, pTaskState->pbSenseBuffer, cbSenseBuffer);
1276
1277	RTMemFree(pTaskState->pbSenseBuffer);
1278	pTaskState->pbSenseBuffer = NULL;
1279	}
1280
1281	/**
1282	* Alloc the sense buffer.
1283	*
1284	* @returns VBox status code.
1285	* @param pTaskState Pointer to the task state.
1286	* @note Current assumption is that the sense buffer is not scattered and does not cross a page boundary.
1287	*/
1288	static int buslogicSenseBufferAlloc(PBUSLOGICTASKSTATE pTaskState)
1289	{
1290	PPDMDEVINS pDevIns = pTaskState->CTX_SUFF(pTargetDevice)->CTX_SUFF(pBusLogic)->CTX_SUFF(pDevIns);
1291	uint32_t cbSenseBuffer = pTaskState->CommandControlBlockGuest.cbSenseData;
1292
1293	pTaskState->pbSenseBuffer = (uint8_t *)RTMemAllocZ(cbSenseBuffer);
1294	if (!pTaskState->pbSenseBuffer)
1295	return VERR_NO_MEMORY;
1296
1297	return VINF_SUCCESS;
1298	}
1299	#endif /* IN_RING3 */
1300
1301	/**
1302	* Parses the command buffer and executes it.
1303	*
1304	* @returns VBox status code.
1305	* @param pBusLogic Pointer to the BusLogic device instance.
1306	*/
1307	static int buslogicProcessCommand(PBUSLOGIC pBusLogic)
1308	{
1309	int rc = VINF_SUCCESS;
1310	bool fSuppressIrq = false;
1311
1312	LogFlowFunc(("pBusLogic=%#p\n", pBusLogic));
1313	AssertMsg(pBusLogic->uOperationCode != 0xff, ("There is no command to execute\n"));
1314
1315	switch (pBusLogic->uOperationCode)
1316	{
1317	case BUSLOGICCOMMAND_INQUIRE_PCI_HOST_ADAPTER_INFORMATION:
1318	{
1319	PReplyInquirePCIHostAdapterInformation pReply = (PReplyInquirePCIHostAdapterInformation)pBusLogic->aReplyBuffer;
1320	memset(pReply, 0, sizeof(ReplyInquirePCIHostAdapterInformation));
1321
1322	/* It seems VMware does not provide valid information here too, lets do the same :) */
1323	pReply->InformationIsValid = 0;
1324	pReply->IsaIOPort = 0xff; /* Make it invalid. */
1325	pBusLogic->cbReplyParametersLeft = sizeof(ReplyInquirePCIHostAdapterInformation);
1326	break;
1327	}
1328	case BUSLOGICCOMMAND_MODIFY_IO_ADDRESS:
1329	{
1330	pBusLogic->cbReplyParametersLeft = 0;
1331	if (pBusLogic->aCommandBuffer[0] == 0x06)
1332	{
1333	Log(("Disabling ISA I/O ports.\n"));
1334	pBusLogic->fISAEnabled = false;
1335	}
1336	fSuppressIrq = true;
1337	break;
1338	}
1339	case BUSLOGICCOMMAND_INQUIRE_BOARD_ID:
1340	{
1341	/* The special option byte is important: If it is '0' or 'B', Windows NT drivers
1342	* for Adaptec AHA-154x may claim the adapter. The BusLogic drivers will claim
1343	* the adapter only when the byte is not '0' or 'B'.
1344	*/
1345	pBusLogic->aReplyBuffer[0] = 'A'; /* Firmware option bytes */
1346	pBusLogic->aReplyBuffer[1] = 'A'; /* Special option byte */
1347
1348	/* We report version 5.07B. This reply will provide the first two digits. */
1349	pBusLogic->aReplyBuffer[2] = '5'; /* Major version 5 */
1350	pBusLogic->aReplyBuffer[3] = '0'; /* Minor version 0 */
1351	pBusLogic->cbReplyParametersLeft = 4; /* Reply is 4 bytes long */
1352	break;
1353	}
1354	case BUSLOGICCOMMAND_INQUIRE_FIRMWARE_VERSION_3RD_LETTER:
1355	{
1356	pBusLogic->aReplyBuffer[0] = '7';
1357	pBusLogic->cbReplyParametersLeft = 1;
1358	break;
1359	}
1360	case BUSLOGICCOMMAND_INQUIRE_FIRMWARE_VERSION_LETTER:
1361	{
1362	pBusLogic->aReplyBuffer[0] = 'B';
1363	pBusLogic->cbReplyParametersLeft = 1;
1364	break;
1365	}
1366	case BUSLOGICCOMMAND_INQUIRE_HOST_ADAPTER_MODEL_NUMBER:
1367	{
1368	/* The reply length is set by the guest and is found in the first byte of the command buffer. */
1369	pBusLogic->cbReplyParametersLeft = pBusLogic->aCommandBuffer[0];
1370	memset(pBusLogic->aReplyBuffer, ' ', pBusLogic->cbReplyParametersLeft);
1371	const char aModelName[] = "958";
1372	int cCharsToTransfer = (pBusLogic->cbReplyParametersLeft <= (sizeof(aModelName) - 1))
1373	? pBusLogic->cbReplyParametersLeft
1374	: sizeof(aModelName) - 1;
1375
1376	for (int i = 0; i < cCharsToTransfer; i++)
1377	pBusLogic->aReplyBuffer[i] = aModelName[i];
1378
1379	break;
1380	}
1381	case BUSLOGICCOMMAND_INQUIRE_CONFIGURATION:
1382	{
1383	pBusLogic->cbReplyParametersLeft = sizeof(ReplyInquireConfiguration);
1384	PReplyInquireConfiguration pReply = (PReplyInquireConfiguration)pBusLogic->aReplyBuffer;
1385	memset(pReply, 0, sizeof(ReplyInquireConfiguration));
1386
1387	pReply->uHostAdapterId = 7; /* The controller has always 7 as ID. */
1388	/*
1389	* The rest of this reply only applies for ISA adapters.
1390	* This is a PCI adapter so they are not important and are skipped.
1391	*/
1392	break;
1393	}
1394	case BUSLOGICCOMMAND_INQUIRE_EXTENDED_SETUP_INFORMATION:
1395	{
1396	/* The reply length is set by the guest and is found in the first byte of the command buffer. */
1397	pBusLogic->cbReplyParametersLeft = pBusLogic->aCommandBuffer[0];
1398	PReplyInquireExtendedSetupInformation pReply = (PReplyInquireExtendedSetupInformation)pBusLogic->aReplyBuffer;
1399	memset(pReply, 0, sizeof(ReplyInquireExtendedSetupInformation));
1400
1401	//@todo: should this reflect the RAM contents (AutoSCSIRam)?
1402	pReply->uBusType = 'E'; /* EISA style */
1403	pReply->u16ScatterGatherLimit = 8192;
1404	pReply->fLevelSensitiveInterrupt = true;
1405	pReply->fHostWideSCSI = true;
1406	pReply->fHostUltraSCSI = true;
1407	memcpy(pReply->aFirmwareRevision, "07B", sizeof(pReply->aFirmwareRevision));
1408
1409	break;
1410	}
1411	case BUSLOGICCOMMAND_INQUIRE_SETUP_INFORMATION:
1412	{
1413	/* The reply length is set by the guest and is found in the first byte of the command buffer. */
1414	pBusLogic->cbReplyParametersLeft = pBusLogic->aCommandBuffer[0];
1415	PReplyInquireSetupInformation pReply = (PReplyInquireSetupInformation)pBusLogic->aReplyBuffer;
1416	memset(pReply, 0, sizeof(ReplyInquireSetupInformation));
1417	break;
1418	}
1419	case BUSLOGICCOMMAND_FETCH_HOST_ADAPTER_LOCAL_RAM:
1420	{
1421	/*
1422	* First element in the command buffer contains start offset to read from
1423	* and second one the number of bytes to read.
1424	*/
1425	uint8_t uOffset = pBusLogic->aCommandBuffer[0];
1426	pBusLogic->cbReplyParametersLeft = pBusLogic->aCommandBuffer[1];
1427
1428	pBusLogic->fUseLocalRam = true;
1429	pBusLogic->iReply = uOffset;
1430	break;
1431	}
1432	case BUSLOGICCOMMAND_INITIALIZE_EXTENDED_MAILBOX:
1433	{
1434	PRequestInitializeExtendedMailbox pRequest = (PRequestInitializeExtendedMailbox)pBusLogic->aCommandBuffer;
1435
1436	pBusLogic->cMailbox = pRequest->cMailbox;
1437	pBusLogic->GCPhysAddrMailboxOutgoingBase = (RTGCPHYS)pRequest->uMailboxBaseAddress;
1438	/* The area for incoming mailboxes is right after the last entry of outgoing mailboxes. */
1439	pBusLogic->GCPhysAddrMailboxIncomingBase = (RTGCPHYS)pRequest->uMailboxBaseAddress + (pBusLogic->cMailbox * sizeof(Mailbox));
1440
1441	Log(("GCPhysAddrMailboxOutgoingBase=%RGp\n", pBusLogic->GCPhysAddrMailboxOutgoingBase));
1442	Log(("GCPhysAddrMailboxIncomingBase=%RGp\n", pBusLogic->GCPhysAddrMailboxIncomingBase));
1443	Log(("cMailboxes=%u\n", pBusLogic->cMailbox));
1444
1445	pBusLogic->regStatus &= ~BUSLOGIC_REGISTER_STATUS_INITIALIZATION_REQUIRED;
1446	pBusLogic->cbReplyParametersLeft = 0;
1447	break;
1448	}
1449	case BUSLOGICCOMMAND_ENABLE_STRICT_ROUND_ROBIN_MODE:
1450	{
1451	if (pBusLogic->aCommandBuffer[0] == 0)
1452	pBusLogic->fStrictRoundRobinMode = false;
1453	else if (pBusLogic->aCommandBuffer[0] == 1)
1454	pBusLogic->fStrictRoundRobinMode = true;
1455	else
1456	AssertMsgFailed(("Invalid round robin mode %d\n", pBusLogic->aCommandBuffer[0]));
1457
1458	pBusLogic->cbReplyParametersLeft = 0;
1459	break;
1460	}
1461	case BUSLOGICCOMMAND_SET_CCB_FORMAT:
1462	{
1463	if (pBusLogic->aCommandBuffer[0] == 0)
1464	pBusLogic->fExtendedLunCCBFormat = false;
1465	else if (pBusLogic->aCommandBuffer[0] == 1)
1466	pBusLogic->fExtendedLunCCBFormat = true;
1467	else
1468	AssertMsgFailed(("Invalid CCB format %d\n", pBusLogic->aCommandBuffer[0]));
1469
1470	pBusLogic->cbReplyParametersLeft = 0;
1471	break;
1472	}
1473	case BUSLOGICCOMMAND_INQUIRE_TARGET_DEVICES:
1474	{
1475	/* Each bit which is set in the 16bit wide variable means a present device. */
1476	uint16_t u16TargetsPresentMask = 0;
1477
1478	for (uint8_t i = 0; i < RT_ELEMENTS(pBusLogic->aDeviceStates); i++)
1479	{
1480	if (pBusLogic->aDeviceStates[i].fPresent)
1481	u16TargetsPresentMask \|= (1 << i);
1482	}
1483	pBusLogic->aReplyBuffer[0] = (uint8_t)u16TargetsPresentMask;
1484	pBusLogic->aReplyBuffer[1] = (uint8_t)(u16TargetsPresentMask >> 8);
1485	pBusLogic->cbReplyParametersLeft = 2;
1486	break;
1487	}
1488	case BUSLOGICCOMMAND_INQUIRE_SYNCHRONOUS_PERIOD:
1489	{
1490	pBusLogic->cbReplyParametersLeft = pBusLogic->aCommandBuffer[0];
1491
1492	for (uint8_t i = 0; i < pBusLogic->cbReplyParametersLeft; i++)
1493	pBusLogic->aReplyBuffer[i] = 0; /* @todo Figure if we need something other here. It's not needed for the linux driver */
1494
1495	break;
1496	}
1497	case BUSLOGICCOMMAND_DISABLE_HOST_ADAPTER_INTERRUPT:
1498	{
1499	if (pBusLogic->aCommandBuffer[0] == 0)
1500	pBusLogic->fIRQEnabled = false;
1501	else
1502	pBusLogic->fIRQEnabled = true;
1503	/* No interrupt signaled regardless of enable/disable. */
1504	fSuppressIrq = true;
1505	break;
1506	}
1507	case BUSLOGICCOMMAND_ECHO_COMMAND_DATA:
1508	{
1509	pBusLogic->aReplyBuffer[0] = pBusLogic->aCommandBuffer[0];
1510	pBusLogic->cbReplyParametersLeft = 1;
1511	break;
1512	}
1513	case BUSLOGICCOMMAND_SET_PREEMPT_TIME_ON_BUS:
1514	{
1515	pBusLogic->cbReplyParametersLeft = 0;
1516	pBusLogic->LocalRam.structured.autoSCSIData.uBusOnDelay = pBusLogic->aCommandBuffer[0];
1517	Log(("Bus-on time: %d\n", pBusLogic->aCommandBuffer[0]));
1518	break;
1519	}
1520	case BUSLOGICCOMMAND_SET_TIME_OFF_BUS:
1521	{
1522	pBusLogic->cbReplyParametersLeft = 0;
1523	pBusLogic->LocalRam.structured.autoSCSIData.uBusOffDelay = pBusLogic->aCommandBuffer[0];
1524	Log(("Bus-off time: %d\n", pBusLogic->aCommandBuffer[0]));
1525	break;
1526	}
1527	case BUSLOGICCOMMAND_EXT_BIOS_INFO:
1528	case BUSLOGICCOMMAND_UNLOCK_MAILBOX:
1529	/* Commands valid for Adaptec 154xC which we don't handle since
1530	* we pretend being 154xB compatible. Just mark the command as invalid.
1531	*/
1532	Log(("Command %#x not valid for this adapter\n", pBusLogic->uOperationCode));
1533	pBusLogic->cbReplyParametersLeft = 0;
1534	pBusLogic->regStatus \|= BUSLOGIC_REGISTER_STATUS_COMMAND_INVALID;
1535	break;
1536	case BUSLOGICCOMMAND_EXECUTE_MAILBOX_COMMAND: /* Should be handled already. */
1537	default:
1538	AssertMsgFailed(("Invalid command %#x\n", pBusLogic->uOperationCode));
1539	}
1540
1541	Log(("uOperationCode=%#x, cbReplyParametersLeft=%d\n", pBusLogic->uOperationCode, pBusLogic->cbReplyParametersLeft));
1542
1543	/* Set the data in ready bit in the status register in case the command has a reply. */
1544	if (pBusLogic->cbReplyParametersLeft)
1545	pBusLogic->regStatus \|= BUSLOGIC_REGISTER_STATUS_DATA_IN_REGISTER_READY;
1546	else
1547	buslogicCommandComplete(pBusLogic, fSuppressIrq);
1548
1549	return rc;
1550	}
1551
1552	/**
1553	* Read a register from the BusLogic adapter.
1554	*
1555	* @returns VBox status code.
1556	* @param pBusLogic Pointer to the BusLogic instance data.
1557	* @param iRegister The index of the register to read.
1558	* @param pu32 Where to store the register content.
1559	*/
1560	static int buslogicRegisterRead(PBUSLOGIC pBusLogic, unsigned iRegister, uint32_t *pu32)
1561	{
1562	int rc = VINF_SUCCESS;
1563
1564	switch (iRegister)
1565	{
1566	case BUSLOGIC_REGISTER_STATUS:
1567	{
1568	*pu32 = pBusLogic->regStatus;
1569	/*
1570	* If the diagnostic active bit is set we are in a hard reset initiated from the guest.
1571	* The guest reads the status register and waits that the host adapter ready bit is set.
1572	*/
1573	if (pBusLogic->regStatus & BUSLOGIC_REGISTER_STATUS_DIAGNOSTIC_ACTIVE)
1574	{
1575	pBusLogic->regStatus &= ~BUSLOGIC_REGISTER_STATUS_DIAGNOSTIC_ACTIVE;
1576	pBusLogic->regStatus \|= BUSLOGIC_REGISTER_STATUS_HOST_ADAPTER_READY;
1577	}
1578	break;
1579	}
1580	case BUSLOGIC_REGISTER_DATAIN:
1581	{
1582	if (pBusLogic->fUseLocalRam)
1583	*pu32 = pBusLogic->LocalRam.u8View[pBusLogic->iReply];
1584	else
1585	*pu32 = pBusLogic->aReplyBuffer[pBusLogic->iReply];
1586
1587	pBusLogic->iReply++;
1588	pBusLogic->cbReplyParametersLeft--;
1589
1590	LogFlowFunc(("cbReplyParametersLeft=%u\n", pBusLogic->cbReplyParametersLeft));
1591	if (!pBusLogic->cbReplyParametersLeft)
1592	{
1593	/*
1594	* Reply finished, set command complete bit, unset data in ready bit and
1595	* interrupt the guest if enabled.
1596	*/
1597	buslogicCommandComplete(pBusLogic, false);
1598	}
1599	break;
1600	}
1601	case BUSLOGIC_REGISTER_INTERRUPT:
1602	{
1603	*pu32 = pBusLogic->regInterrupt;
1604	break;
1605	}
1606	case BUSLOGIC_REGISTER_GEOMETRY:
1607	{
1608	*pu32 = pBusLogic->regGeometry;
1609	break;
1610	}
1611	default:
1612	*pu32 = UINT32_C(0xffffffff);
1613	}
1614
1615	Log2(("%s: pu32=%p:{%.*Rhxs} iRegister=%d rc=%Rrc\n",
1616	__FUNCTION__, pu32, 1, pu32, iRegister, rc));
1617
1618	return rc;
1619	}
1620
1621	/**
1622	* Write a value to a register.
1623	*
1624	* @returns VBox status code.
1625	* @param pBusLogic Pointer to the BusLogic instance data.
1626	* @param iRegister The index of the register to read.
1627	* @param uVal The value to write.
1628	*/
1629	static int buslogicRegisterWrite(PBUSLOGIC pBusLogic, unsigned iRegister, uint8_t uVal)
1630	{
1631	int rc = VINF_SUCCESS;
1632
1633	switch (iRegister)
1634	{
1635	case BUSLOGIC_REGISTER_CONTROL:
1636	{
1637	rc = PDMCritSectEnter(&pBusLogic->CritSectIntr, VINF_IOM_HC_IOPORT_WRITE);
1638	if (rc != VINF_SUCCESS)
1639	return rc;
1640
1641	#ifdef LOG_ENABLED
1642	uint32_t cMailboxesReady = ASMAtomicXchgU32(&pBusLogic->cInMailboxesReady, 0);
1643	Log(("%u incoming mailboxes are ready when this interrupt was cleared\n", cMailboxesReady));
1644	#endif
1645
1646	if (uVal & BUSLOGIC_REGISTER_CONTROL_INTERRUPT_RESET)
1647	buslogicClearInterrupt(pBusLogic);
1648
1649	PDMCritSectLeave(&pBusLogic->CritSectIntr);
1650
1651	if ((uVal & BUSLOGIC_REGISTER_CONTROL_HARD_RESET) \|\| (uVal & BUSLOGIC_REGISTER_CONTROL_SOFT_RESET))
1652	{
1653	#ifdef IN_RING3
1654	buslogicIntiateHardReset(pBusLogic);
1655	#else
1656	rc = VINF_IOM_HC_IOPORT_WRITE;
1657	#endif
1658	}
1659
1660	break;
1661	}
1662	case BUSLOGIC_REGISTER_COMMAND:
1663	{
1664	/* Fast path for mailbox execution command. */
1665	if ((uVal == BUSLOGICCOMMAND_EXECUTE_MAILBOX_COMMAND) && (pBusLogic->uOperationCode == 0xff))
1666	{
1667	ASMAtomicIncU32(&pBusLogic->cMailboxesReady);
1668	if (!ASMAtomicXchgBool(&pBusLogic->fNotificationSend, true))
1669	{
1670	/* Send new notification to the queue. */
1671	PPDMQUEUEITEMCORE pItem = PDMQueueAlloc(pBusLogic->CTX_SUFF(pNotifierQueue));
1672	AssertMsg(pItem, ("Allocating item for queue failed\n"));
1673	PDMQueueInsert(pBusLogic->CTX_SUFF(pNotifierQueue), (PPDMQUEUEITEMCORE)pItem);
1674	}
1675
1676	return rc;
1677	}
1678
1679	/*
1680	* Check if we are already fetch command parameters from the guest.
1681	* If not we initialize executing a new command.
1682	*/
1683	if (pBusLogic->uOperationCode == 0xff)
1684	{
1685	pBusLogic->uOperationCode = uVal;
1686	pBusLogic->iParameter = 0;
1687
1688	/* Mark host adapter as busy and clear the invalid status bit. */
1689	pBusLogic->regStatus &= ~(BUSLOGIC_REGISTER_STATUS_HOST_ADAPTER_READY \| BUSLOGIC_REGISTER_STATUS_COMMAND_INVALID);
1690
1691	/* Get the number of bytes for parameters from the command code. */
1692	switch (pBusLogic->uOperationCode)
1693	{
1694	case BUSLOGICCOMMAND_INQUIRE_FIRMWARE_VERSION_LETTER:
1695	case BUSLOGICCOMMAND_INQUIRE_BOARD_ID:
1696	case BUSLOGICCOMMAND_INQUIRE_FIRMWARE_VERSION_3RD_LETTER:
1697	case BUSLOGICCOMMAND_INQUIRE_PCI_HOST_ADAPTER_INFORMATION:
1698	case BUSLOGICCOMMAND_INQUIRE_CONFIGURATION:
1699	case BUSLOGICCOMMAND_INQUIRE_TARGET_DEVICES:
1700	pBusLogic->cbCommandParametersLeft = 0;
1701	break;
1702	case BUSLOGICCOMMAND_MODIFY_IO_ADDRESS:
1703	case BUSLOGICCOMMAND_INQUIRE_EXTENDED_SETUP_INFORMATION:
1704	case BUSLOGICCOMMAND_INQUIRE_SETUP_INFORMATION:
1705	case BUSLOGICCOMMAND_INQUIRE_HOST_ADAPTER_MODEL_NUMBER:
1706	case BUSLOGICCOMMAND_ENABLE_STRICT_ROUND_ROBIN_MODE:
1707	case BUSLOGICCOMMAND_SET_CCB_FORMAT:
1708	case BUSLOGICCOMMAND_INQUIRE_SYNCHRONOUS_PERIOD:
1709	case BUSLOGICCOMMAND_DISABLE_HOST_ADAPTER_INTERRUPT:
1710	case BUSLOGICCOMMAND_ECHO_COMMAND_DATA:
1711	case BUSLOGICCOMMAND_SET_PREEMPT_TIME_ON_BUS:
1712	case BUSLOGICCOMMAND_SET_TIME_OFF_BUS:
1713	pBusLogic->cbCommandParametersLeft = 1;
1714	break;
1715	case BUSLOGICCOMMAND_FETCH_HOST_ADAPTER_LOCAL_RAM:
1716	pBusLogic->cbCommandParametersLeft = 2;
1717	break;
1718	case BUSLOGICCOMMAND_INITIALIZE_EXTENDED_MAILBOX:
1719	pBusLogic->cbCommandParametersLeft = sizeof(RequestInitializeExtendedMailbox);
1720	break;
1721	case BUSLOGICCOMMAND_EXT_BIOS_INFO:
1722	case BUSLOGICCOMMAND_UNLOCK_MAILBOX:
1723	/* Invalid commands. */
1724	pBusLogic->cbCommandParametersLeft = 0;
1725	break;
1726	case BUSLOGICCOMMAND_EXECUTE_MAILBOX_COMMAND: /* Should not come here anymore. */
1727	default:
1728	AssertMsgFailed(("Invalid operation code %#x\n", uVal));
1729	}
1730	}
1731	else
1732	{
1733	/*
1734	* The real adapter would set the Command register busy bit in the status register.
1735	* The guest has to wait until it is unset.
1736	* We don't need to do it because the guest does not continue execution while we are in this
1737	* function.
1738	*/
1739	pBusLogic->aCommandBuffer[pBusLogic->iParameter] = uVal;
1740	pBusLogic->iParameter++;
1741	pBusLogic->cbCommandParametersLeft--;
1742	}
1743
1744	/* Start execution of command if there are no parameters left. */
1745	if (!pBusLogic->cbCommandParametersLeft)
1746	{
1747	rc = buslogicProcessCommand(pBusLogic);
1748	AssertMsgRC(rc, ("Processing command failed rc=%Rrc\n", rc));
1749	}
1750	break;
1751	}
1752	default:
1753	AssertMsgFailed(("Register not available\n"));
1754	rc = VERR_IOM_IOPORT_UNUSED;
1755	}
1756
1757	return rc;
1758	}
1759
1760	/**
1761	* Memory mapped I/O Handler for read operations.
1762	*
1763	* @returns VBox status code.
1764	*
1765	* @param pDevIns The device instance.
1766	* @param pvUser User argument.
1767	* @param GCPhysAddr Physical address (in GC) where the read starts.
1768	* @param pv Where to store the result.
1769	* @param cb Number of bytes read.
1770	*/
1771	PDMBOTHCBDECL(int) buslogicMMIORead(PPDMDEVINS pDevIns, void *pvUser,
1772	RTGCPHYS GCPhysAddr, void *pv, unsigned cb)
1773	{
1774	/* the linux driver does not make use of the MMIO area. */
1775	AssertMsgFailed(("MMIO Read\n"));
1776	return VINF_SUCCESS;
1777	}
1778
1779	/**
1780	* Memory mapped I/O Handler for write operations.
1781	*
1782	* @returns VBox status code.
1783	*
1784	* @param pDevIns The device instance.
1785	* @param pvUser User argument.
1786	* @param GCPhysAddr Physical address (in GC) where the read starts.
1787	* @param pv Where to fetch the result.
1788	* @param cb Number of bytes to write.
1789	*/
1790	PDMBOTHCBDECL(int) buslogicMMIOWrite(PPDMDEVINS pDevIns, void *pvUser,
1791	RTGCPHYS GCPhysAddr, void const *pv, unsigned cb)
1792	{
1793	/* the linux driver does not make use of the MMIO area. */
1794	AssertMsgFailed(("MMIO Write\n"));
1795	return VINF_SUCCESS;
1796	}
1797
1798	/**
1799	* Port I/O Handler for IN operations.
1800	*
1801	* @returns VBox status code.
1802	*
1803	* @param pDevIns The device instance.
1804	* @param pvUser User argument.
1805	* @param uPort Port number used for the IN operation.
1806	* @param pu32 Where to store the result.
1807	* @param cb Number of bytes read.
1808	*/
1809	PDMBOTHCBDECL(int) buslogicIOPortRead (PPDMDEVINS pDevIns, void *pvUser,
1810	RTIOPORT Port, uint32_t *pu32, unsigned cb)
1811	{
1812	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);;
1813	unsigned iRegister = Port - pBusLogic->IOPortBase;
1814
1815	Assert(cb == 1);
1816
1817	return buslogicRegisterRead(pBusLogic, iRegister, pu32);
1818	}
1819
1820	/**
1821	* Port I/O Handler for OUT operations.
1822	*
1823	* @returns VBox status code.
1824	*
1825	* @param pDevIns The device instance.
1826	* @param pvUser User argument.
1827	* @param uPort Port number used for the IN operation.
1828	* @param u32 The value to output.
1829	* @param cb The value size in bytes.
1830	*/
1831	PDMBOTHCBDECL(int) buslogicIOPortWrite (PPDMDEVINS pDevIns, void *pvUser,
1832	RTIOPORT Port, uint32_t u32, unsigned cb)
1833	{
1834	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
1835	int rc = VINF_SUCCESS;
1836	unsigned iRegister = Port - pBusLogic->IOPortBase;
1837	uint8_t uVal = (uint8_t)u32;
1838
1839	Assert(cb == 1);
1840
1841	rc = buslogicRegisterWrite(pBusLogic, iRegister, (uint8_t)uVal);
1842
1843	Log2(("#%d %s: pvUser=%#p cb=%d u32=%#x Port=%#x rc=%Rrc\n",
1844	pDevIns->iInstance, __FUNCTION__, pvUser, cb, u32, Port, rc));
1845
1846	return rc;
1847	}
1848
1849	#ifdef IN_RING3
1850	/**
1851	* Port I/O Handler for IN operations - legacy port.
1852	*
1853	* @returns VBox status code.
1854	*
1855	* @param pDevIns The device instance.
1856	* @param pvUser User argument.
1857	* @param uPort Port number used for the IN operation.
1858	* @param pu32 Where to store the result.
1859	* @param cb Number of bytes read.
1860	*/
1861	static int buslogicIsaIOPortRead (PPDMDEVINS pDevIns, void *pvUser,
1862	RTIOPORT Port, uint32_t *pu32, unsigned cb)
1863	{
1864	int rc;
1865	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
1866
1867	Assert(cb == 1);
1868
1869	if (!pBusLogic->fISAEnabled)
1870	return VINF_SUCCESS;
1871
1872	rc = vboxscsiReadRegister(&pBusLogic->VBoxSCSI, (Port - BUSLOGIC_ISA_IO_PORT), pu32);
1873
1874	//Log2(("%s: pu32=%p:{%.*Rhxs} iRegister=%d rc=%Rrc\n",
1875	// __FUNCTION__, pu32, 1, pu32, (Port - BUSLOGIC_ISA_IO_PORT), rc));
1876
1877	return rc;
1878	}
1879
1880	static void buslogicWarningDiskFull(PPDMDEVINS pDevIns)
1881	{
1882	int rc;
1883	LogRel(("BusLogic#%d: Host disk full\n", pDevIns->iInstance));
1884	rc = PDMDevHlpVMSetRuntimeError(pDevIns, VMSETRTERR_FLAGS_SUSPEND \| VMSETRTERR_FLAGS_NO_WAIT, "DevBusLogic_DISKFULL",
1885	N_("Host system reported disk full. VM execution is suspended. You can resume after freeing some space"));
1886	AssertRC(rc);
1887	}
1888
1889	static void buslogicWarningFileTooBig(PPDMDEVINS pDevIns)
1890	{
1891	int rc;
1892	LogRel(("BusLogic#%d: File too big\n", pDevIns->iInstance));
1893	rc = PDMDevHlpVMSetRuntimeError(pDevIns, VMSETRTERR_FLAGS_SUSPEND \| VMSETRTERR_FLAGS_NO_WAIT, "DevBusLogic_FILETOOBIG",
1894	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"));
1895	AssertRC(rc);
1896	}
1897
1898	static void buslogicWarningISCSI(PPDMDEVINS pDevIns)
1899	{
1900	int rc;
1901	LogRel(("BusLogic#%d: iSCSI target unavailable\n", pDevIns->iInstance));
1902	rc = PDMDevHlpVMSetRuntimeError(pDevIns, VMSETRTERR_FLAGS_SUSPEND \| VMSETRTERR_FLAGS_NO_WAIT, "DevBusLogic_ISCSIDOWN",
1903	N_("The iSCSI target has stopped responding. VM execution is suspended. You can resume when it is available again"));
1904	AssertRC(rc);
1905	}
1906
1907	static void buslogicWarningUnknown(PPDMDEVINS pDevIns, int rc)
1908	{
1909	int rc2;
1910	LogRel(("BusLogic#%d: Unknown but recoverable error has occurred (rc=%Rrc)\n", pDevIns->iInstance, rc));
1911	rc2 = PDMDevHlpVMSetRuntimeError(pDevIns, VMSETRTERR_FLAGS_SUSPEND \| VMSETRTERR_FLAGS_NO_WAIT, "DevBusLogic_UNKNOWN",
1912	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);
1913	AssertRC(rc2);
1914	}
1915
1916	static void buslogicRedoSetWarning(PBUSLOGIC pThis, int rc)
1917	{
1918	if (rc == VERR_DISK_FULL)
1919	buslogicWarningDiskFull(pThis->CTX_SUFF(pDevIns));
1920	else if (rc == VERR_FILE_TOO_BIG)
1921	buslogicWarningFileTooBig(pThis->CTX_SUFF(pDevIns));
1922	else if (rc == VERR_BROKEN_PIPE \|\| rc == VERR_NET_CONNECTION_REFUSED)
1923	{
1924	/* iSCSI connection abort (first error) or failure to reestablish
1925	* connection (second error). Pause VM. On resume we'll retry. */
1926	buslogicWarningISCSI(pThis->CTX_SUFF(pDevIns));
1927	}
1928	else
1929	buslogicWarningUnknown(pThis->CTX_SUFF(pDevIns), rc);
1930	}
1931
1932
1933	static int buslogicPrepareBIOSSCSIRequest(PBUSLOGIC pBusLogic)
1934	{
1935	int rc;
1936	PBUSLOGICTASKSTATE pTaskState;
1937	uint32_t uTargetDevice;
1938
1939	rc = RTMemCacheAllocEx(pBusLogic->hTaskCache, (void **)&pTaskState);
1940	AssertMsgRCReturn(rc, ("Getting task from cache failed rc=%Rrc\n", rc), rc);
1941
1942	pTaskState->fBIOS = true;
1943
1944	rc = vboxscsiSetupRequest(&pBusLogic->VBoxSCSI, &pTaskState->PDMScsiRequest, &uTargetDevice);
1945	AssertMsgRCReturn(rc, ("Setting up SCSI request failed rc=%Rrc\n", rc), rc);
1946
1947	pTaskState->PDMScsiRequest.pvUser = pTaskState;
1948
1949	pTaskState->CTX_SUFF(pTargetDevice) = &pBusLogic->aDeviceStates[uTargetDevice];
1950
1951	if (!pTaskState->CTX_SUFF(pTargetDevice)->fPresent)
1952	{
1953	/* Device is not present. */
1954	AssertMsg(pTaskState->PDMScsiRequest.pbCDB[0] == SCSI_INQUIRY,
1955	("Device is not present but command is not inquiry\n"));
1956
1957	SCSIINQUIRYDATA ScsiInquiryData;
1958
1959	memset(&ScsiInquiryData, 0, sizeof(SCSIINQUIRYDATA));
1960	ScsiInquiryData.u5PeripheralDeviceType = SCSI_INQUIRY_DATA_PERIPHERAL_DEVICE_TYPE_UNKNOWN;
1961	ScsiInquiryData.u3PeripheralQualifier = SCSI_INQUIRY_DATA_PERIPHERAL_QUALIFIER_NOT_CONNECTED_NOT_SUPPORTED;
1962
1963	memcpy(pBusLogic->VBoxSCSI.pBuf, &ScsiInquiryData, 5);
1964
1965	rc = vboxscsiRequestFinished(&pBusLogic->VBoxSCSI, &pTaskState->PDMScsiRequest);
1966	AssertMsgRCReturn(rc, ("Finishing BIOS SCSI request failed rc=%Rrc\n", rc), rc);
1967
1968	RTMemCacheFree(pBusLogic->hTaskCache, pTaskState);
1969	}
1970	else
1971	{
1972	LogFlowFunc(("before increment %u\n", pTaskState->CTX_SUFF(pTargetDevice)->cOutstandingRequests));
1973	ASMAtomicIncU32(&pTaskState->CTX_SUFF(pTargetDevice)->cOutstandingRequests);
1974	LogFlowFunc(("after increment %u\n", pTaskState->CTX_SUFF(pTargetDevice)->cOutstandingRequests));
1975
1976	rc = pTaskState->CTX_SUFF(pTargetDevice)->pDrvSCSIConnector->pfnSCSIRequestSend(pTaskState->CTX_SUFF(pTargetDevice)->pDrvSCSIConnector,
1977	&pTaskState->PDMScsiRequest);
1978	AssertMsgRC(rc, ("Sending request to SCSI layer failed rc=%Rrc\n", rc));
1979	}
1980
1981	return rc;
1982	}
1983
1984	/**
1985	* Port I/O Handler for OUT operations - legacy port.
1986	*
1987	* @returns VBox status code.
1988	*
1989	* @param pDevIns The device instance.
1990	* @param pvUser User argument.
1991	* @param uPort Port number used for the IN operation.
1992	* @param u32 The value to output.
1993	* @param cb The value size in bytes.
1994	*/
1995	static int buslogicIsaIOPortWrite (PPDMDEVINS pDevIns, void *pvUser,
1996	RTIOPORT Port, uint32_t u32, unsigned cb)
1997	{
1998	int rc;
1999	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2000
2001	Log2(("#%d %s: pvUser=%#p cb=%d u32=%#x Port=%#x\n",
2002	pDevIns->iInstance, __FUNCTION__, pvUser, cb, u32, Port));
2003
2004	Assert(cb == 1);
2005
2006	if (!pBusLogic->fISAEnabled)
2007	return VINF_SUCCESS;
2008
2009	rc = vboxscsiWriteRegister(&pBusLogic->VBoxSCSI, (Port - BUSLOGIC_ISA_IO_PORT), (uint8_t)u32);
2010	if (rc == VERR_MORE_DATA)
2011	{
2012	rc = buslogicPrepareBIOSSCSIRequest(pBusLogic);
2013	AssertRC(rc);
2014	}
2015	else if (RT_FAILURE(rc))
2016	AssertMsgFailed(("Writing BIOS register failed %Rrc\n", rc));
2017
2018	return VINF_SUCCESS;
2019	}
2020
2021	/**
2022	* Port I/O Handler for primary port range OUT string operations.
2023	* @see FNIOMIOPORTOUTSTRING for details.
2024	*/
2025	static DECLCALLBACK(int) buslogicIsaIOPortWriteStr(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, RTGCPTR pGCPtrSrc, PRTGCUINTREG pcTransfer, unsigned cb)
2026	{
2027	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2028	int rc;
2029
2030	Log2(("#%d %s: pvUser=%#p cb=%d Port=%#x\n",
2031	pDevIns->iInstance, __FUNCTION__, pvUser, cb, Port));
2032
2033	rc = vboxscsiWriteString(pDevIns, &pBusLogic->VBoxSCSI, (Port - BUSLOGIC_ISA_IO_PORT),
2034	pGCPtrSrc, pcTransfer, cb);
2035	if (rc == VERR_MORE_DATA)
2036	{
2037	rc = buslogicPrepareBIOSSCSIRequest(pBusLogic);
2038	AssertRC(rc);
2039	}
2040	else if (RT_FAILURE(rc))
2041	AssertMsgFailed(("Writing BIOS register failed %Rrc\n", rc));
2042
2043	return rc;
2044	}
2045
2046	/**
2047	* Port I/O Handler for primary port range IN string operations.
2048	* @see FNIOMIOPORTINSTRING for details.
2049	*/
2050	static DECLCALLBACK(int) buslogicIsaIOPortReadStr(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, RTGCPTR pGCPtrDst, PRTGCUINTREG pcTransfer, unsigned cb)
2051	{
2052	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2053
2054	LogFlowFunc(("#%d %s: pvUser=%#p cb=%d Port=%#x\n",
2055	pDevIns->iInstance, __FUNCTION__, pvUser, cb, Port));
2056
2057	return vboxscsiReadString(pDevIns, &pBusLogic->VBoxSCSI, (Port - BUSLOGIC_ISA_IO_PORT),
2058	pGCPtrDst, pcTransfer, cb);
2059	}
2060
2061	static DECLCALLBACK(int) buslogicMMIOMap(PPCIDEVICE pPciDev, /unsigned/ int iRegion,
2062	RTGCPHYS GCPhysAddress, uint32_t cb,
2063	PCIADDRESSSPACE enmType)
2064	{
2065	PPDMDEVINS pDevIns = pPciDev->pDevIns;
2066	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2067	int rc = VINF_SUCCESS;
2068
2069	Log2(("%s: registering MMIO area at GCPhysAddr=%RGp cb=%u\n", __FUNCTION__, GCPhysAddress, cb));
2070
2071	Assert(cb >= 32);
2072
2073	if (enmType == PCI_ADDRESS_SPACE_MEM)
2074	{
2075	/* We use the assigned size here, because we currently only support page aligned MMIO ranges. */
2076	rc = PDMDevHlpMMIORegister(pDevIns, GCPhysAddress, cb, NULL,
2077	buslogicMMIOWrite, buslogicMMIORead, NULL, "BusLogic");
2078	if (RT_FAILURE(rc))
2079	return rc;
2080
2081	if (pThis->fR0Enabled)
2082	{
2083	rc = PDMDevHlpMMIORegisterR0(pDevIns, GCPhysAddress, cb, 0,
2084	"buslogicMMIOWrite", "buslogicMMIORead", NULL);
2085	if (RT_FAILURE(rc))
2086	return rc;
2087	}
2088
2089	if (pThis->fGCEnabled)
2090	{
2091	rc = PDMDevHlpMMIORegisterRC(pDevIns, GCPhysAddress, cb, 0,
2092	"buslogicMMIOWrite", "buslogicMMIORead", NULL);
2093	if (RT_FAILURE(rc))
2094	return rc;
2095	}
2096
2097	pThis->MMIOBase = GCPhysAddress;
2098	}
2099	else if (enmType == PCI_ADDRESS_SPACE_IO)
2100	{
2101	rc = PDMDevHlpIOPortRegister(pDevIns, (RTIOPORT)GCPhysAddress, 32,
2102	NULL, buslogicIOPortWrite, buslogicIOPortRead, NULL, NULL, "BusLogic");
2103	if (RT_FAILURE(rc))
2104	return rc;
2105
2106	if (pThis->fR0Enabled)
2107	{
2108	rc = PDMDevHlpIOPortRegisterR0(pDevIns, (RTIOPORT)GCPhysAddress, 32,
2109	0, "buslogicIOPortWrite", "buslogicIOPortRead", NULL, NULL, "BusLogic");
2110	if (RT_FAILURE(rc))
2111	return rc;
2112	}
2113
2114	if (pThis->fGCEnabled)
2115	{
2116	rc = PDMDevHlpIOPortRegisterRC(pDevIns, (RTIOPORT)GCPhysAddress, 32,
2117	0, "buslogicIOPortWrite", "buslogicIOPortRead", NULL, NULL, "BusLogic");
2118	if (RT_FAILURE(rc))
2119	return rc;
2120	}
2121
2122	pThis->IOPortBase = (RTIOPORT)GCPhysAddress;
2123	}
2124	else
2125	AssertMsgFailed(("Invalid enmType=%d\n", enmType));
2126
2127	return rc;
2128	}
2129
2130	static DECLCALLBACK(int) buslogicDeviceSCSIRequestCompleted(PPDMISCSIPORT pInterface, PPDMSCSIREQUEST pSCSIRequest,
2131	int rcCompletion, bool fRedo, int rcReq)
2132	{
2133	int rc;
2134	PBUSLOGICTASKSTATE pTaskState = (PBUSLOGICTASKSTATE)pSCSIRequest->pvUser;
2135	PBUSLOGICDEVICE pBusLogicDevice = pTaskState->CTX_SUFF(pTargetDevice);
2136	PBUSLOGIC pBusLogic = pBusLogicDevice->CTX_SUFF(pBusLogic);
2137
2138	LogFlowFunc(("before decrement %u\n", pBusLogicDevice->cOutstandingRequests));
2139	ASMAtomicDecU32(&pBusLogicDevice->cOutstandingRequests);
2140	LogFlowFunc(("after decrement %u\n", pBusLogicDevice->cOutstandingRequests));
2141
2142	if (fRedo)
2143	{
2144	if (!pTaskState->fBIOS)
2145	{
2146	buslogicDataBufferFree(pTaskState);
2147
2148	if (pTaskState->pbSenseBuffer)
2149	buslogicSenseBufferFree(pTaskState, false /* fCopy */);
2150	}
2151
2152	/* Add to the list. */
2153	do
2154	{
2155	pTaskState->pRedoNext = ASMAtomicReadPtrT(&pBusLogic->pTasksRedoHead, PBUSLOGICTASKSTATE);
2156	} while (!ASMAtomicCmpXchgPtr(&pBusLogic->pTasksRedoHead, pTaskState, pTaskState->pRedoNext));
2157
2158	/* Suspend the VM if not done already. */
2159	if (!ASMAtomicXchgBool(&pBusLogic->fRedo, true))
2160	buslogicRedoSetWarning(pBusLogic, rcReq);
2161	}
2162	else
2163	{
2164	if (pTaskState->fBIOS)
2165	{
2166	rc = vboxscsiRequestFinished(&pBusLogic->VBoxSCSI, pSCSIRequest);
2167	AssertMsgRC(rc, ("Finishing BIOS SCSI request failed rc=%Rrc\n", rc));
2168	}
2169	else
2170	{
2171	buslogicDataBufferFree(pTaskState);
2172
2173	if (pTaskState->pbSenseBuffer)
2174	buslogicSenseBufferFree(pTaskState, (rcCompletion != SCSI_STATUS_OK));
2175
2176	if (rcCompletion == SCSI_STATUS_OK)
2177	buslogicSendIncomingMailbox(pBusLogic, pTaskState,
2178	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_CMD_COMPLETED,
2179	BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS_OPERATION_GOOD,
2180	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_WITHOUT_ERROR);
2181	else if (rcCompletion == SCSI_STATUS_CHECK_CONDITION)
2182	buslogicSendIncomingMailbox(pBusLogic, pTaskState,
2183	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_CMD_COMPLETED,
2184	BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS_CHECK_CONDITION,
2185	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_WITH_ERROR);
2186	else
2187	AssertMsgFailed(("invalid completion status %d\n", rcCompletion));
2188	}
2189
2190	/* Add task to the cache. */
2191	RTMemCacheFree(pBusLogic->hTaskCache, pTaskState);
2192	}
2193
2194	if (pBusLogicDevice->cOutstandingRequests == 0 && pBusLogic->fSignalIdle)
2195	PDMDevHlpAsyncNotificationCompleted(pBusLogic->pDevInsR3);
2196
2197	return VINF_SUCCESS;
2198	}
2199
2200	static DECLCALLBACK(int) buslogicQueryDeviceLocation(PPDMISCSIPORT pInterface, const char **ppcszController,
2201	uint32_t piInstance, uint32_t piLUN)
2202	{
2203	PBUSLOGICDEVICE pBusLogicDevice = PDMISCSIPORT_2_PBUSLOGICDEVICE(pInterface);
2204	PPDMDEVINS pDevIns = pBusLogicDevice->CTX_SUFF(pBusLogic)->CTX_SUFF(pDevIns);
2205
2206	AssertPtrReturn(ppcszController, VERR_INVALID_POINTER);
2207	AssertPtrReturn(piInstance, VERR_INVALID_POINTER);
2208	AssertPtrReturn(piLUN, VERR_INVALID_POINTER);
2209
2210	*ppcszController = pDevIns->pReg->szName;
2211	*piInstance = pDevIns->iInstance;
2212	*piLUN = pBusLogicDevice->iLUN;
2213
2214	return VINF_SUCCESS;
2215	}
2216
2217	static int buslogicDeviceSCSIRequestSetup(PBUSLOGIC pBusLogic, PBUSLOGICTASKSTATE pTaskState)
2218	{
2219	int rc = VINF_SUCCESS;
2220
2221	/* Fetch CCB. */
2222	RTGCPHYS GCPhysAddrCCB = (RTGCPHYS)pTaskState->MailboxGuest.u32PhysAddrCCB;
2223	PDMDevHlpPhysRead(pBusLogic->CTX_SUFF(pDevIns), GCPhysAddrCCB,
2224	&pTaskState->CommandControlBlockGuest, sizeof(CommandControlBlock));
2225
2226	PBUSLOGICDEVICE pTargetDevice = &pBusLogic->aDeviceStates[pTaskState->CommandControlBlockGuest.uTargetId];
2227	pTaskState->CTX_SUFF(pTargetDevice) = pTargetDevice;
2228
2229	#ifdef DEBUG
2230	buslogicDumpCCBInfo(&pTaskState->CommandControlBlockGuest);
2231	#endif
2232
2233	/* Alloc required buffers. */
2234	rc = buslogicDataBufferAlloc(pTaskState);
2235	AssertMsgRC(rc, ("Alloc failed rc=%Rrc\n", rc));
2236
2237	if (pTaskState->CommandControlBlockGuest.cbSenseData)
2238	{
2239	rc = buslogicSenseBufferAlloc(pTaskState);
2240	AssertMsgRC(rc, ("Mapping sense buffer failed rc=%Rrc\n", rc));
2241	}
2242
2243	/* Check if device is present on bus. If not return error immediately and don't process this further. */
2244	if (!pBusLogic->aDeviceStates[pTaskState->CommandControlBlockGuest.uTargetId].fPresent)
2245	{
2246	buslogicDataBufferFree(pTaskState);
2247
2248	if (pTaskState->pbSenseBuffer)
2249	buslogicSenseBufferFree(pTaskState, true);
2250
2251	buslogicSendIncomingMailbox(pBusLogic, pTaskState,
2252	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_SCSI_SELECTION_TIMEOUT,
2253	BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS_OPERATION_GOOD,
2254	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_WITH_ERROR);
2255
2256	RTMemCacheFree(pBusLogic->hTaskCache, pTaskState);
2257	}
2258	else
2259	{
2260	/* Setup SCSI request. */
2261	pTaskState->PDMScsiRequest.uLogicalUnit = pTaskState->CommandControlBlockGuest.uLogicalUnit;
2262
2263	if (pTaskState->CommandControlBlockGuest.uDataDirection == BUSLOGIC_CCB_DIRECTION_UNKNOWN)
2264	pTaskState->PDMScsiRequest.uDataDirection = PDMSCSIREQUESTTXDIR_UNKNOWN;
2265	else if (pTaskState->CommandControlBlockGuest.uDataDirection == BUSLOGIC_CCB_DIRECTION_IN)
2266	pTaskState->PDMScsiRequest.uDataDirection = PDMSCSIREQUESTTXDIR_FROM_DEVICE;
2267	else if (pTaskState->CommandControlBlockGuest.uDataDirection == BUSLOGIC_CCB_DIRECTION_OUT)
2268	pTaskState->PDMScsiRequest.uDataDirection = PDMSCSIREQUESTTXDIR_TO_DEVICE;
2269	else if (pTaskState->CommandControlBlockGuest.uDataDirection == BUSLOGIC_CCB_DIRECTION_NO_DATA)
2270	pTaskState->PDMScsiRequest.uDataDirection = PDMSCSIREQUESTTXDIR_NONE;
2271	else
2272	AssertMsgFailed(("Invalid data direction type %d\n", pTaskState->CommandControlBlockGuest.uDataDirection));
2273
2274	pTaskState->PDMScsiRequest.cbCDB = pTaskState->CommandControlBlockGuest.cbCDB;
2275	pTaskState->PDMScsiRequest.pbCDB = pTaskState->CommandControlBlockGuest.aCDB;
2276	if (pTaskState->DataSeg.cbSeg)
2277	{
2278	pTaskState->PDMScsiRequest.cbScatterGather = pTaskState->DataSeg.cbSeg;
2279	pTaskState->PDMScsiRequest.cScatterGatherEntries = 1;
2280	pTaskState->PDMScsiRequest.paScatterGatherHead = &pTaskState->DataSeg;
2281	}
2282	else
2283	{
2284	pTaskState->PDMScsiRequest.cbScatterGather = 0;
2285	pTaskState->PDMScsiRequest.cScatterGatherEntries = 0;
2286	pTaskState->PDMScsiRequest.paScatterGatherHead = NULL;
2287	}
2288	pTaskState->PDMScsiRequest.cbSenseBuffer = pTaskState->CommandControlBlockGuest.cbSenseData;
2289	pTaskState->PDMScsiRequest.pbSenseBuffer = pTaskState->pbSenseBuffer;
2290	pTaskState->PDMScsiRequest.pvUser = pTaskState;
2291
2292	ASMAtomicIncU32(&pTargetDevice->cOutstandingRequests);
2293	rc = pTargetDevice->pDrvSCSIConnector->pfnSCSIRequestSend(pTargetDevice->pDrvSCSIConnector, &pTaskState->PDMScsiRequest);
2294	AssertMsgRC(rc, ("Sending request to SCSI layer failed rc=%Rrc\n", rc));
2295	}
2296
2297	return rc;
2298	}
2299
2300	/**
2301	* Read mailbox from the guest and execute command.
2302	*
2303	* @returns VBox status code.
2304	* @param pBusLogic Pointer to the BusLogic instance data.
2305	*/
2306	static int buslogicProcessMailboxNext(PBUSLOGIC pBusLogic)
2307	{
2308	PBUSLOGICTASKSTATE pTaskState = NULL;
2309	RTGCPHYS GCPhysAddrMailboxCurrent;
2310	int rc;
2311
2312	rc = RTMemCacheAllocEx(pBusLogic->hTaskCache, (void **)&pTaskState);
2313	AssertMsgReturn(RT_SUCCESS(rc) && (pTaskState != NULL), ("Failed to get task state from cache\n"), rc);
2314
2315	pTaskState->fBIOS = false;
2316
2317	if (!pBusLogic->fStrictRoundRobinMode)
2318	{
2319	/* Search for a filled mailbox - stop if we have scanned all mailboxes. */
2320	uint8_t uMailboxPosCur = pBusLogic->uMailboxOutgoingPositionCurrent;
2321
2322	do
2323	{
2324	/* Fetch mailbox from guest memory. */
2325	GCPhysAddrMailboxCurrent = buslogicOutgoingMailboxGetGCPhys(pBusLogic);
2326
2327	PDMDevHlpPhysRead(pBusLogic->CTX_SUFF(pDevIns), GCPhysAddrMailboxCurrent,
2328	&pTaskState->MailboxGuest, sizeof(Mailbox));
2329
2330	/* Check the next mailbox. */
2331	buslogicOutgoingMailboxAdvance(pBusLogic);
2332	} while ( pTaskState->MailboxGuest.u.out.uActionCode == BUSLOGIC_MAILBOX_OUTGOING_ACTION_FREE
2333	&& uMailboxPosCur != pBusLogic->uMailboxOutgoingPositionCurrent);
2334	}
2335	else
2336	{
2337	/* Fetch mailbox from guest memory. */
2338	GCPhysAddrMailboxCurrent = buslogicOutgoingMailboxGetGCPhys(pBusLogic);
2339
2340	PDMDevHlpPhysRead(pBusLogic->CTX_SUFF(pDevIns), GCPhysAddrMailboxCurrent,
2341	&pTaskState->MailboxGuest, sizeof(Mailbox));
2342	}
2343
2344	/*
2345	* Check if the mailbox is actually loaded.
2346	* It might be possible that the guest notified us without
2347	* a loaded mailbox. Do nothing in that case but leave a
2348	* log entry.
2349	*/
2350	if (pTaskState->MailboxGuest.u.out.uActionCode == BUSLOGIC_MAILBOX_OUTGOING_ACTION_FREE)
2351	{
2352	Log(("No loaded mailbox left\n"));
2353	RTMemCacheFree(pBusLogic->hTaskCache, pTaskState);
2354	return VERR_NO_DATA;
2355	}
2356
2357	LogFlow(("Got loaded mailbox at slot %u, CCB phys %RGp\n", pBusLogic->uMailboxOutgoingPositionCurrent, pTaskState->MailboxGuest.u32PhysAddrCCB));
2358	#ifdef DEBUG
2359	buslogicDumpMailboxInfo(&pTaskState->MailboxGuest, true);
2360	#endif
2361
2362	/* We got the mailbox, mark it as free in the guest. */
2363	uint8_t uActionCode = BUSLOGIC_MAILBOX_OUTGOING_ACTION_FREE;
2364	PDMDevHlpPhysWrite(pBusLogic->CTX_SUFF(pDevIns), GCPhysAddrMailboxCurrent + RT_OFFSETOF(Mailbox, u.out.uActionCode), &uActionCode, sizeof(uActionCode));
2365
2366	if (pTaskState->MailboxGuest.u.out.uActionCode == BUSLOGIC_MAILBOX_OUTGOING_ACTION_START_COMMAND)
2367	rc = buslogicDeviceSCSIRequestSetup(pBusLogic, pTaskState);
2368	else if (pTaskState->MailboxGuest.u.out.uActionCode == BUSLOGIC_MAILBOX_OUTGOING_ACTION_ABORT_COMMAND)
2369	{
2370	AssertMsgFailed(("Not implemented yet\n"));
2371	}
2372	else
2373	AssertMsgFailed(("Invalid outgoing mailbox action code %u\n", pTaskState->MailboxGuest.u.out.uActionCode));
2374
2375	AssertRC(rc);
2376
2377	/* Advance to the next mailbox. */
2378	if (pBusLogic->fStrictRoundRobinMode)
2379	buslogicOutgoingMailboxAdvance(pBusLogic);
2380
2381	return rc;
2382	}
2383
2384	/**
2385	* Transmit queue consumer
2386	* Queue a new async task.
2387	*
2388	* @returns Success indicator.
2389	* If false the item will not be removed and the flushing will stop.
2390	* @param pDevIns The device instance.
2391	* @param pItem The item to consume. Upon return this item will be freed.
2392	*/
2393	static DECLCALLBACK(bool) buslogicNotifyQueueConsumer(PPDMDEVINS pDevIns, PPDMQUEUEITEMCORE pItem)
2394	{
2395	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2396
2397	/* Reset notification send flag now. */
2398	Assert(pBusLogic->fNotificationSend);
2399	ASMAtomicXchgBool(&pBusLogic->fNotificationSend, false);
2400	ASMAtomicXchgU32(&pBusLogic->cMailboxesReady, 0); /* @todo: Actually not required anymore but to stay compatible with older saved states. */
2401
2402	/* Process mailboxes. */
2403	int rc;
2404	do
2405	{
2406	rc = buslogicProcessMailboxNext(pBusLogic);
2407	AssertMsg(RT_SUCCESS(rc) \|\| rc == VERR_NO_DATA, ("Processing mailbox failed rc=%Rrc\n", rc));
2408	} while (RT_SUCCESS(rc));
2409
2410	return true;
2411	}
2412
2413	/**
2414	* Kicks the controller to process pending tasks after the VM was resumed
2415	* or loaded from a saved state.
2416	*
2417	* @returns nothing.
2418	* @param pThis The BusLogic device instance.
2419	*/
2420	static void buslogicKick(PBUSLOGIC pThis)
2421	{
2422	if (pThis->fRedo)
2423	{
2424	pThis->fRedo = false;
2425	if (pThis->VBoxSCSI.fBusy)
2426	{
2427
2428	/* The BIOS had a request active when we got suspended. Resume it. */
2429	int rc = buslogicPrepareBIOSSCSIRequest(pThis);
2430	AssertRC(rc);
2431	}
2432	else
2433	{
2434	/* Queue all pending tasks again. */
2435	PBUSLOGICTASKSTATE pTaskState = pThis->pTasksRedoHead;
2436
2437	pThis->pTasksRedoHead = NULL;
2438
2439	while (pTaskState)
2440	{
2441	PBUSLOGICTASKSTATE pCur = pTaskState;
2442
2443	int rc = buslogicDeviceSCSIRequestSetup(pThis, pCur);
2444	AssertRC(rc);
2445
2446	pTaskState = pTaskState->pRedoNext;
2447	}
2448	}
2449	}
2450	}
2451
2452	static DECLCALLBACK(int) buslogicLiveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uPass)
2453	{
2454	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2455
2456	/* Save the device config. */
2457	for (unsigned i = 0; i < RT_ELEMENTS(pThis->aDeviceStates); i++)
2458	SSMR3PutBool(pSSM, pThis->aDeviceStates[i].fPresent);
2459
2460	return VINF_SSM_DONT_CALL_AGAIN;
2461	}
2462
2463	static DECLCALLBACK(int) buslogicSaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
2464	{
2465	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2466
2467	/* Every device first. */
2468	for (unsigned i = 0; i < RT_ELEMENTS(pBusLogic->aDeviceStates); i++)
2469	{
2470	PBUSLOGICDEVICE pDevice = &pBusLogic->aDeviceStates[i];
2471
2472	AssertMsg(!pDevice->cOutstandingRequests,
2473	("There are still outstanding requests on this device\n"));
2474	SSMR3PutBool(pSSM, pDevice->fPresent);
2475	SSMR3PutU32(pSSM, pDevice->cOutstandingRequests);
2476	}
2477	/* Now the main device state. */
2478	SSMR3PutU8 (pSSM, pBusLogic->regStatus);
2479	SSMR3PutU8 (pSSM, pBusLogic->regInterrupt);
2480	SSMR3PutU8 (pSSM, pBusLogic->regGeometry);
2481	SSMR3PutMem (pSSM, &pBusLogic->LocalRam, sizeof(pBusLogic->LocalRam));
2482	SSMR3PutU8 (pSSM, pBusLogic->uOperationCode);
2483	SSMR3PutMem (pSSM, &pBusLogic->aCommandBuffer, sizeof(pBusLogic->aCommandBuffer));
2484	SSMR3PutU8 (pSSM, pBusLogic->iParameter);
2485	SSMR3PutU8 (pSSM, pBusLogic->cbCommandParametersLeft);
2486	SSMR3PutBool (pSSM, pBusLogic->fUseLocalRam);
2487	SSMR3PutMem (pSSM, pBusLogic->aReplyBuffer, sizeof(pBusLogic->aReplyBuffer));
2488	SSMR3PutU8 (pSSM, pBusLogic->iReply);
2489	SSMR3PutU8 (pSSM, pBusLogic->cbReplyParametersLeft);
2490	SSMR3PutBool (pSSM, pBusLogic->fIRQEnabled);
2491	SSMR3PutBool (pSSM, pBusLogic->fISAEnabled);
2492	SSMR3PutU32 (pSSM, pBusLogic->cMailbox);
2493	SSMR3PutGCPhys(pSSM, pBusLogic->GCPhysAddrMailboxOutgoingBase);
2494	SSMR3PutU32 (pSSM, pBusLogic->uMailboxOutgoingPositionCurrent);
2495	SSMR3PutU32 (pSSM, pBusLogic->cMailboxesReady);
2496	SSMR3PutBool (pSSM, pBusLogic->fNotificationSend);
2497	SSMR3PutGCPhys(pSSM, pBusLogic->GCPhysAddrMailboxIncomingBase);
2498	SSMR3PutU32 (pSSM, pBusLogic->uMailboxIncomingPositionCurrent);
2499	SSMR3PutBool (pSSM, pBusLogic->fStrictRoundRobinMode);
2500	SSMR3PutBool (pSSM, pBusLogic->fExtendedLunCCBFormat);
2501	/* Now the data for the BIOS interface. */
2502	SSMR3PutU8 (pSSM, pBusLogic->VBoxSCSI.regIdentify);
2503	SSMR3PutU8 (pSSM, pBusLogic->VBoxSCSI.uTargetDevice);
2504	SSMR3PutU8 (pSSM, pBusLogic->VBoxSCSI.uTxDir);
2505	SSMR3PutU8 (pSSM, pBusLogic->VBoxSCSI.cbCDB);
2506	SSMR3PutMem (pSSM, pBusLogic->VBoxSCSI.aCDB, sizeof(pBusLogic->VBoxSCSI.aCDB));
2507	SSMR3PutU8 (pSSM, pBusLogic->VBoxSCSI.iCDB);
2508	SSMR3PutU32 (pSSM, pBusLogic->VBoxSCSI.cbBuf);
2509	SSMR3PutU32 (pSSM, pBusLogic->VBoxSCSI.iBuf);
2510	SSMR3PutBool (pSSM, pBusLogic->VBoxSCSI.fBusy);
2511	SSMR3PutU8 (pSSM, pBusLogic->VBoxSCSI.enmState);
2512	if (pBusLogic->VBoxSCSI.cbBuf)
2513	SSMR3PutMem(pSSM, pBusLogic->VBoxSCSI.pBuf, pBusLogic->VBoxSCSI.cbBuf);
2514
2515	/*
2516	* Save the physical addresses of the command control blocks of still pending tasks.
2517	* They are processed again on resume.
2518	*
2519	* The number of pending tasks needs to be determined first.
2520	*/
2521	uint32_t cTasks = 0;
2522
2523	PBUSLOGICTASKSTATE pTaskState = pBusLogic->pTasksRedoHead;
2524	if (pBusLogic->fRedo)
2525	{
2526	while (pTaskState)
2527	{
2528	cTasks++;
2529	pTaskState = pTaskState->pRedoNext;
2530	}
2531	}
2532	SSMR3PutU32(pSSM, cTasks);
2533
2534	/* Write the address of every task now. */
2535	pTaskState = pBusLogic->pTasksRedoHead;
2536	while (pTaskState)
2537	{
2538	SSMR3PutU32(pSSM, pTaskState->MailboxGuest.u32PhysAddrCCB);
2539	pTaskState = pTaskState->pRedoNext;
2540	}
2541
2542	return SSMR3PutU32(pSSM, ~0);
2543	}
2544
2545	static DECLCALLBACK(int) buslogicLoadDone(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
2546	{
2547	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2548
2549	buslogicKick(pThis);
2550	return VINF_SUCCESS;
2551	}
2552
2553	static DECLCALLBACK(int) buslogicLoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
2554	{
2555	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2556	int rc = VINF_SUCCESS;
2557
2558	/* We support saved states only from this and older versions. */
2559	if (uVersion > BUSLOGIC_SAVED_STATE_MINOR_VERSION)
2560	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
2561
2562	/* Every device first. */
2563	for (unsigned i = 0; i < RT_ELEMENTS(pBusLogic->aDeviceStates); i++)
2564	{
2565	PBUSLOGICDEVICE pDevice = &pBusLogic->aDeviceStates[i];
2566
2567	AssertMsg(!pDevice->cOutstandingRequests,
2568	("There are still outstanding requests on this device\n"));
2569	bool fPresent;
2570	rc = SSMR3GetBool(pSSM, &fPresent);
2571	AssertRCReturn(rc, rc);
2572	if (pDevice->fPresent != fPresent)
2573	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Target %u config mismatch: config=%RTbool state=%RTbool"), i, pDevice->fPresent, fPresent);
2574
2575	if (uPass == SSM_PASS_FINAL)
2576	SSMR3GetU32(pSSM, (uint32_t *)&pDevice->cOutstandingRequests);
2577	}
2578
2579	if (uPass != SSM_PASS_FINAL)
2580	return VINF_SUCCESS;
2581
2582	/* Now the main device state. */
2583	SSMR3GetU8 (pSSM, (uint8_t *)&pBusLogic->regStatus);
2584	SSMR3GetU8 (pSSM, (uint8_t *)&pBusLogic->regInterrupt);
2585	SSMR3GetU8 (pSSM, (uint8_t *)&pBusLogic->regGeometry);
2586	SSMR3GetMem (pSSM, &pBusLogic->LocalRam, sizeof(pBusLogic->LocalRam));
2587	SSMR3GetU8 (pSSM, &pBusLogic->uOperationCode);
2588	SSMR3GetMem (pSSM, &pBusLogic->aCommandBuffer, sizeof(pBusLogic->aCommandBuffer));
2589	SSMR3GetU8 (pSSM, &pBusLogic->iParameter);
2590	SSMR3GetU8 (pSSM, &pBusLogic->cbCommandParametersLeft);
2591	SSMR3GetBool (pSSM, &pBusLogic->fUseLocalRam);
2592	SSMR3GetMem (pSSM, pBusLogic->aReplyBuffer, sizeof(pBusLogic->aReplyBuffer));
2593	SSMR3GetU8 (pSSM, &pBusLogic->iReply);
2594	SSMR3GetU8 (pSSM, &pBusLogic->cbReplyParametersLeft);
2595	SSMR3GetBool (pSSM, &pBusLogic->fIRQEnabled);
2596	SSMR3GetBool (pSSM, &pBusLogic->fISAEnabled);
2597	SSMR3GetU32 (pSSM, &pBusLogic->cMailbox);
2598	SSMR3GetGCPhys(pSSM, &pBusLogic->GCPhysAddrMailboxOutgoingBase);
2599	SSMR3GetU32 (pSSM, &pBusLogic->uMailboxOutgoingPositionCurrent);
2600	SSMR3GetU32 (pSSM, (uint32_t *)&pBusLogic->cMailboxesReady);
2601	SSMR3GetBool (pSSM, (bool *)&pBusLogic->fNotificationSend);
2602	SSMR3GetGCPhys(pSSM, &pBusLogic->GCPhysAddrMailboxIncomingBase);
2603	SSMR3GetU32 (pSSM, &pBusLogic->uMailboxIncomingPositionCurrent);
2604	SSMR3GetBool (pSSM, &pBusLogic->fStrictRoundRobinMode);
2605	SSMR3GetBool (pSSM, &pBusLogic->fExtendedLunCCBFormat);
2606	/* Now the data for the BIOS interface. */
2607	SSMR3GetU8 (pSSM, &pBusLogic->VBoxSCSI.regIdentify);
2608	SSMR3GetU8 (pSSM, &pBusLogic->VBoxSCSI.uTargetDevice);
2609	SSMR3GetU8 (pSSM, &pBusLogic->VBoxSCSI.uTxDir);
2610	SSMR3GetU8 (pSSM, &pBusLogic->VBoxSCSI.cbCDB);
2611	SSMR3GetMem (pSSM, pBusLogic->VBoxSCSI.aCDB, sizeof(pBusLogic->VBoxSCSI.aCDB));
2612	SSMR3GetU8 (pSSM, &pBusLogic->VBoxSCSI.iCDB);
2613	SSMR3GetU32 (pSSM, &pBusLogic->VBoxSCSI.cbBuf);
2614	SSMR3GetU32 (pSSM, &pBusLogic->VBoxSCSI.iBuf);
2615	SSMR3GetBool(pSSM, (bool *)&pBusLogic->VBoxSCSI.fBusy);
2616	SSMR3GetU8 (pSSM, (uint8_t *)&pBusLogic->VBoxSCSI.enmState);
2617	if (pBusLogic->VBoxSCSI.cbBuf)
2618	{
2619	pBusLogic->VBoxSCSI.pBuf = (uint8_t *)RTMemAllocZ(pBusLogic->VBoxSCSI.cbBuf);
2620	if (!pBusLogic->VBoxSCSI.pBuf)
2621	{
2622	LogRel(("BusLogic: Out of memory during restore.\n"));
2623	return PDMDEV_SET_ERROR(pDevIns, VERR_NO_MEMORY,
2624	N_("BusLogic: Out of memory during restore\n"));
2625	}
2626	SSMR3GetMem(pSSM, pBusLogic->VBoxSCSI.pBuf, pBusLogic->VBoxSCSI.cbBuf);
2627	}
2628
2629	if (pBusLogic->VBoxSCSI.fBusy)
2630	pBusLogic->fRedo = true;
2631
2632	if (uVersion > BUSLOGIC_SAVED_STATE_MINOR_PRE_ERROR_HANDLING)
2633	{
2634	/* Check if there are pending tasks saved. */
2635	uint32_t cTasks = 0;
2636
2637	SSMR3GetU32(pSSM, &cTasks);
2638
2639	if (cTasks)
2640	pBusLogic->fRedo = true;
2641
2642	for (uint32_t i = 0; i < cTasks; i++)
2643	{
2644	PBUSLOGICTASKSTATE pTaskState = (PBUSLOGICTASKSTATE)RTMemCacheAlloc(pBusLogic->hTaskCache);
2645	if (!pTaskState)
2646	{
2647	rc = VERR_NO_MEMORY;
2648	break;
2649	}
2650
2651	rc = SSMR3GetU32(pSSM, &pTaskState->MailboxGuest.u32PhysAddrCCB);
2652	if (RT_FAILURE(rc))
2653	{
2654	RTMemCacheFree(pBusLogic->hTaskCache, pTaskState);
2655	break;
2656	}
2657
2658	/* Link into the list. */
2659	pTaskState->pRedoNext = pBusLogic->pTasksRedoHead;
2660	pBusLogic->pTasksRedoHead = pTaskState;
2661	}
2662	}
2663
2664	if (RT_SUCCESS(rc))
2665	{
2666	uint32_t u32;
2667	rc = SSMR3GetU32(pSSM, &u32);
2668	if (RT_SUCCESS(rc))
2669	AssertMsgReturn(u32 == ~0U, ("%#x\n", u32), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2670	}
2671
2672	return rc;
2673	}
2674
2675	/**
2676	* Gets the pointer to the status LED of a device - called from the SCSi driver.
2677	*
2678	* @returns VBox status code.
2679	* @param pInterface Pointer to the interface structure containing the called function pointer.
2680	* @param iLUN The unit which status LED we desire. Always 0 here as the driver
2681	* doesn't know about other LUN's.
2682	* @param ppLed Where to store the LED pointer.
2683	*/
2684	static DECLCALLBACK(int) buslogicDeviceQueryStatusLed(PPDMILEDPORTS pInterface, unsigned iLUN, PPDMLED *ppLed)
2685	{
2686	PBUSLOGICDEVICE pDevice = PDMILEDPORTS_2_PBUSLOGICDEVICE(pInterface);
2687	if (iLUN == 0)
2688	{
2689	*ppLed = &pDevice->Led;
2690	Assert((*ppLed)->u32Magic == PDMLED_MAGIC);
2691	return VINF_SUCCESS;
2692	}
2693	return VERR_PDM_LUN_NOT_FOUND;
2694	}
2695
2696	/**
2697	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
2698	*/
2699	static DECLCALLBACK(void ) buslogicDeviceQueryInterface(PPDMIBASE pInterface, const char pszIID)
2700	{
2701	PBUSLOGICDEVICE pDevice = PDMIBASE_2_PBUSLOGICDEVICE(pInterface);
2702	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDevice->IBase);
2703	PDMIBASE_RETURN_INTERFACE(pszIID, PDMISCSIPORT, &pDevice->ISCSIPort);
2704	PDMIBASE_RETURN_INTERFACE(pszIID, PDMILEDPORTS, &pDevice->ILed);
2705	return NULL;
2706	}
2707
2708	/**
2709	* Gets the pointer to the status LED of a unit.
2710	*
2711	* @returns VBox status code.
2712	* @param pInterface Pointer to the interface structure containing the called function pointer.
2713	* @param iLUN The unit which status LED we desire.
2714	* @param ppLed Where to store the LED pointer.
2715	*/
2716	static DECLCALLBACK(int) buslogicStatusQueryStatusLed(PPDMILEDPORTS pInterface, unsigned iLUN, PPDMLED *ppLed)
2717	{
2718	PBUSLOGIC pBusLogic = PDMILEDPORTS_2_PBUSLOGIC(pInterface);
2719	if (iLUN < BUSLOGIC_MAX_DEVICES)
2720	{
2721	*ppLed = &pBusLogic->aDeviceStates[iLUN].Led;
2722	Assert((*ppLed)->u32Magic == PDMLED_MAGIC);
2723	return VINF_SUCCESS;
2724	}
2725	return VERR_PDM_LUN_NOT_FOUND;
2726	}
2727
2728	/**
2729	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
2730	*/
2731	static DECLCALLBACK(void ) buslogicStatusQueryInterface(PPDMIBASE pInterface, const char pszIID)
2732	{
2733	PBUSLOGIC pThis = PDMIBASE_2_PBUSLOGIC(pInterface);
2734	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->IBase);
2735	PDMIBASE_RETURN_INTERFACE(pszIID, PDMILEDPORTS, &pThis->ILeds);
2736	return NULL;
2737	}
2738
2739	/* -=-=-=-=- Helper -=-=-=-=- */
2740
2741	/**
2742	* Checks if all asynchronous I/O is finished.
2743	*
2744	* Used by buslogicReset, buslogicSuspend and buslogicPowerOff.
2745	*
2746	* @returns true if quiesced, false if busy.
2747	* @param pDevIns The device instance.
2748	*/
2749	static bool buslogicR3AllAsyncIOIsFinished(PPDMDEVINS pDevIns)
2750	{
2751	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2752
2753	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aDeviceStates); i++)
2754	{
2755	PBUSLOGICDEVICE pThisDevice = &pThis->aDeviceStates[i];
2756	if (pThisDevice->pDrvBase)
2757	{
2758	if (pThisDevice->cOutstandingRequests != 0)
2759	return false;
2760	}
2761	}
2762
2763	return true;
2764	}
2765
2766	/**
2767	* Callback employed by buslogicR3Suspend and buslogicR3PowerOff..
2768	*
2769	* @returns true if we've quiesced, false if we're still working.
2770	* @param pDevIns The device instance.
2771	*/
2772	static DECLCALLBACK(bool) buslogicR3IsAsyncSuspendOrPowerOffDone(PPDMDEVINS pDevIns)
2773	{
2774	if (!buslogicR3AllAsyncIOIsFinished(pDevIns))
2775	return false;
2776
2777	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2778	ASMAtomicWriteBool(&pThis->fSignalIdle, false);
2779	return true;
2780	}
2781
2782	/**
2783	* Common worker for ahciR3Suspend and ahciR3PowerOff.
2784	*/
2785	static void buslogicR3SuspendOrPowerOff(PPDMDEVINS pDevIns, bool fPowerOff)
2786	{
2787	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2788
2789	ASMAtomicWriteBool(&pThis->fSignalIdle, true);
2790	if (!buslogicR3AllAsyncIOIsFinished(pDevIns))
2791	PDMDevHlpSetAsyncNotification(pDevIns, buslogicR3IsAsyncSuspendOrPowerOffDone);
2792	else
2793	{
2794	ASMAtomicWriteBool(&pThis->fSignalIdle, false);
2795
2796	AssertMsg(!pThis->fNotificationSend, ("The PDM Queue should be empty at this point\n"));
2797
2798	if (pThis->fRedo)
2799	{
2800	if (fPowerOff)
2801	{
2802	/* Free tasks which would have been queued again on resume. */
2803	PBUSLOGICTASKSTATE pTaskState = pThis->pTasksRedoHead;
2804
2805	pThis->pTasksRedoHead = NULL;
2806
2807	while (pTaskState)
2808	{
2809	PBUSLOGICTASKSTATE pFree;
2810
2811	pFree = pTaskState;
2812	pTaskState = pTaskState->pRedoNext;
2813
2814	RTMemCacheFree(pThis->hTaskCache, pFree);
2815	}
2816	pThis->fRedo = false;
2817	}
2818	else if (pThis->VBoxSCSI.fBusy)
2819	{
2820	/* Destroy the task because the BIOS interface has all necessary information. */
2821	Assert(pThis->pTasksRedoHead->fBIOS);
2822	Assert(!pThis->pTasksRedoHead->pRedoNext);
2823
2824	RTMemCacheFree(pThis->hTaskCache, pThis->pTasksRedoHead);
2825	pThis->pTasksRedoHead = NULL;
2826	}
2827	}
2828	}
2829	}
2830
2831	/**
2832	* Suspend notification.
2833	*
2834	* @param pDevIns The device instance data.
2835	*/
2836	static DECLCALLBACK(void) buslogicSuspend(PPDMDEVINS pDevIns)
2837	{
2838	Log(("buslogicSuspend\n"));
2839	buslogicR3SuspendOrPowerOff(pDevIns, false /* fPoweroff */);
2840	}
2841
2842	/**
2843	* Resume notification.
2844	*
2845	* @param pDevIns The device instance data.
2846	*/
2847	static DECLCALLBACK(void) buslogicResume(PPDMDEVINS pDevIns)
2848	{
2849	Log(("buslogicResume\n"));
2850	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2851	buslogicKick(pThis);
2852	}
2853
2854
2855	/**
2856	* Detach notification.
2857	*
2858	* One harddisk at one port has been unplugged.
2859	* The VM is suspended at this point.
2860	*
2861	* @param pDevIns The device instance.
2862	* @param iLUN The logical unit which is being detached.
2863	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
2864	*/
2865	static DECLCALLBACK(void) buslogicDetach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2866	{
2867	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2868	PBUSLOGICDEVICE pDevice = &pThis->aDeviceStates[iLUN];
2869
2870	Log(("%s:\n", __FUNCTION__));
2871
2872	AssertMsg(fFlags & PDM_TACH_FLAGS_NOT_HOT_PLUG,
2873	("BusLogic: Device does not support hotplugging\n"));
2874
2875	/*
2876	* Zero some important members.
2877	*/
2878	pDevice->pDrvBase = NULL;
2879	pDevice->fPresent = false;
2880	pDevice->pDrvSCSIConnector = NULL;
2881	}
2882
2883	/**
2884	* Attach command.
2885	*
2886	* This is called when we change block driver.
2887	*
2888	* @returns VBox status code.
2889	* @param pDevIns The device instance.
2890	* @param iLUN The logical unit which is being detached.
2891	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
2892	*/
2893	static DECLCALLBACK(int) buslogicAttach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2894	{
2895	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2896	PBUSLOGICDEVICE pDevice = &pThis->aDeviceStates[iLUN];
2897	int rc;
2898
2899	AssertMsgReturn(fFlags & PDM_TACH_FLAGS_NOT_HOT_PLUG,
2900	("BusLogic: Device does not support hotplugging\n"),
2901	VERR_INVALID_PARAMETER);
2902
2903	/* the usual paranoia */
2904	AssertRelease(!pDevice->pDrvBase);
2905	AssertRelease(!pDevice->pDrvSCSIConnector);
2906	Assert(pDevice->iLUN == iLUN);
2907
2908	/*
2909	* Try attach the block device and get the interfaces,
2910	* required as well as optional.
2911	*/
2912	rc = PDMDevHlpDriverAttach(pDevIns, pDevice->iLUN, &pDevice->IBase, &pDevice->pDrvBase, NULL);
2913	if (RT_SUCCESS(rc))
2914	{
2915	/* Get SCSI connector interface. */
2916	pDevice->pDrvSCSIConnector = PDMIBASE_QUERY_INTERFACE(pDevice->pDrvBase, PDMISCSICONNECTOR);
2917	AssertMsgReturn(pDevice->pDrvSCSIConnector, ("Missing SCSI interface below\n"), VERR_PDM_MISSING_INTERFACE);
2918	pDevice->fPresent = true;
2919	}
2920	else
2921	AssertMsgFailed(("Failed to attach LUN#%d. rc=%Rrc\n", pDevice->iLUN, rc));
2922
2923	if (RT_FAILURE(rc))
2924	{
2925	pDevice->pDrvBase = NULL;
2926	pDevice->pDrvSCSIConnector = NULL;
2927	}
2928	return rc;
2929	}
2930
2931	/**
2932	* Callback employed by buslogicR3Reset.
2933	*
2934	* @returns true if we've quiesced, false if we're still working.
2935	* @param pDevIns The device instance.
2936	*/
2937	static DECLCALLBACK(bool) buslogicR3IsAsyncResetDone(PPDMDEVINS pDevIns)
2938	{
2939	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2940
2941	if (!buslogicR3AllAsyncIOIsFinished(pDevIns))
2942	return false;
2943	ASMAtomicWriteBool(&pThis->fSignalIdle, false);
2944
2945	buslogicHwReset(pThis);
2946	return true;
2947	}
2948
2949	/**
2950	* @copydoc FNPDMDEVRESET
2951	*/
2952	static DECLCALLBACK(void) buslogicReset(PPDMDEVINS pDevIns)
2953	{
2954	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2955
2956	ASMAtomicWriteBool(&pThis->fSignalIdle, true);
2957	if (!buslogicR3AllAsyncIOIsFinished(pDevIns))
2958	PDMDevHlpSetAsyncNotification(pDevIns, buslogicR3IsAsyncResetDone);
2959	else
2960	{
2961	ASMAtomicWriteBool(&pThis->fSignalIdle, false);
2962	buslogicHwReset(pThis);
2963	}
2964	}
2965
2966	static DECLCALLBACK(void) buslogicRelocate(PPDMDEVINS pDevIns, RTGCINTPTR offDelta)
2967	{
2968	uint32_t i;
2969	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2970
2971	pBusLogic->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
2972	pBusLogic->pNotifierQueueRC = PDMQueueRCPtr(pBusLogic->pNotifierQueueR3);
2973
2974	for (i = 0; i < BUSLOGIC_MAX_DEVICES; i++)
2975	{
2976	PBUSLOGICDEVICE pDevice = &pBusLogic->aDeviceStates[i];
2977
2978	pDevice->pBusLogicRC = PDMINS_2_DATA_RCPTR(pDevIns);
2979	}
2980
2981	}
2982
2983	/**
2984	* Poweroff notification.
2985	*
2986	* @param pDevIns Pointer to the device instance
2987	*/
2988	static DECLCALLBACK(void) buslogicPowerOff(PPDMDEVINS pDevIns)
2989	{
2990	Log(("buslogicPowerOff\n"));
2991	buslogicR3SuspendOrPowerOff(pDevIns, true /* fPoweroff */);
2992	}
2993
2994	/**
2995	* Destroy a driver instance.
2996	*
2997	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
2998	* resources can be freed correctly.
2999	*
3000	* @param pDevIns The device instance data.
3001	*/
3002	static DECLCALLBACK(int) buslogicDestruct(PPDMDEVINS pDevIns)
3003	{
3004	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3005	PDMDEV_CHECK_VERSIONS_RETURN_QUIET(pDevIns);
3006
3007	PDMR3CritSectDelete(&pThis->CritSectIntr);
3008
3009	/*
3010	* Free all tasks which are still hanging around
3011	* (Power off after the VM was suspended).
3012	*/
3013	if (pThis->fRedo)
3014	{
3015	/* Free tasks which would have been queued again on resume. */
3016	PBUSLOGICTASKSTATE pTaskState = pThis->pTasksRedoHead;
3017
3018	pThis->pTasksRedoHead = NULL;
3019
3020	while (pTaskState)
3021	{
3022	PBUSLOGICTASKSTATE pFree;
3023
3024	pFree = pTaskState;
3025	pTaskState = pTaskState->pRedoNext;
3026
3027	RTMemCacheFree(pThis->hTaskCache, pFree);
3028	}
3029	pThis->fRedo = false;
3030	}
3031
3032	int rc = RTMemCacheDestroy(pThis->hTaskCache);
3033	AssertMsgRC(rc, ("Destroying task cache failed rc=%Rrc\n", rc));
3034
3035	return rc;
3036	}
3037
3038	/**
3039	* @interface_method_impl{PDMDEVREG,pfnConstruct}
3040	*/
3041	static DECLCALLBACK(int) buslogicConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
3042	{
3043	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3044	int rc = VINF_SUCCESS;
3045	bool fBootable = true;
3046	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
3047
3048	/*
3049	* Validate and read configuration.
3050	*/
3051	if (!CFGMR3AreValuesValid(pCfg,
3052	"GCEnabled\0"
3053	"R0Enabled\0"
3054	"Bootable\0"))
3055	return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
3056	N_("BusLogic configuration error: unknown option specified"));
3057
3058	rc = CFGMR3QueryBoolDef(pCfg, "GCEnabled", &pThis->fGCEnabled, true);
3059	if (RT_FAILURE(rc))
3060	return PDMDEV_SET_ERROR(pDevIns, rc,
3061	N_("BusLogic configuration error: failed to read GCEnabled as boolean"));
3062	Log(("%s: fGCEnabled=%d\n", __FUNCTION__, pThis->fGCEnabled));
3063
3064	rc = CFGMR3QueryBoolDef(pCfg, "R0Enabled", &pThis->fR0Enabled, true);
3065	if (RT_FAILURE(rc))
3066	return PDMDEV_SET_ERROR(pDevIns, rc,
3067	N_("BusLogic configuration error: failed to read R0Enabled as boolean"));
3068	Log(("%s: fR0Enabled=%d\n", __FUNCTION__, pThis->fR0Enabled));
3069	rc = CFGMR3QueryBoolDef(pCfg, "Bootable", &fBootable, true);
3070	if (RT_FAILURE(rc))
3071	return PDMDEV_SET_ERROR(pDevIns, rc,
3072	N_("BusLogic configuration error: failed to read Bootable as boolean"));
3073	Log(("%s: fBootable=%RTbool\n", __FUNCTION__, fBootable));
3074
3075	pThis->pDevInsR3 = pDevIns;
3076	pThis->pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
3077	pThis->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
3078	pThis->IBase.pfnQueryInterface = buslogicStatusQueryInterface;
3079	pThis->ILeds.pfnQueryStatusLed = buslogicStatusQueryStatusLed;
3080
3081	PCIDevSetVendorId (&pThis->dev, 0x104b); /* BusLogic */
3082	PCIDevSetDeviceId (&pThis->dev, 0x1040); /* BT-958 */
3083	PCIDevSetCommand (&pThis->dev, 0x0003);
3084	PCIDevSetRevisionId (&pThis->dev, 0x01);
3085	PCIDevSetClassProg (&pThis->dev, 0x00); /* SCSI */
3086	PCIDevSetClassSub (&pThis->dev, 0x00); /* SCSI */
3087	PCIDevSetClassBase (&pThis->dev, 0x01); /* Mass storage */
3088	PCIDevSetBaseAddress (&pThis->dev, 0, true /IO/, false /Pref/, false /64-bit/, 0x00000000);
3089	PCIDevSetBaseAddress (&pThis->dev, 1, false /IO/, false /Pref/, false /64-bit/, 0x00000000);
3090	PCIDevSetSubSystemVendorId(&pThis->dev, 0x104b);
3091	PCIDevSetSubSystemId (&pThis->dev, 0x1040);
3092	PCIDevSetInterruptLine (&pThis->dev, 0x00);
3093	PCIDevSetInterruptPin (&pThis->dev, 0x01);
3094
3095	/*
3096	* Register the PCI device, it's I/O regions.
3097	*/
3098	rc = PDMDevHlpPCIRegister (pDevIns, &pThis->dev);
3099	if (RT_FAILURE(rc))
3100	return rc;
3101
3102	rc = PDMDevHlpPCIIORegionRegister(pDevIns, 0, 32, PCI_ADDRESS_SPACE_IO, buslogicMMIOMap);
3103	if (RT_FAILURE(rc))
3104	return rc;
3105
3106	rc = PDMDevHlpPCIIORegionRegister(pDevIns, 1, 32, PCI_ADDRESS_SPACE_MEM, buslogicMMIOMap);
3107	if (RT_FAILURE(rc))
3108	return rc;
3109
3110	if (fBootable)
3111	{
3112	/* Register I/O port space in ISA region for BIOS access. */
3113	rc = PDMDevHlpIOPortRegister(pDevIns, BUSLOGIC_ISA_IO_PORT, 3, NULL,
3114	buslogicIsaIOPortWrite, buslogicIsaIOPortRead,
3115	buslogicIsaIOPortWriteStr, buslogicIsaIOPortReadStr,
3116	"BusLogic BIOS");
3117	if (RT_FAILURE(rc))
3118	return PDMDEV_SET_ERROR(pDevIns, rc, N_("BusLogic cannot register legacy I/O handlers"));
3119	}
3120
3121	/* Initialize task cache. */
3122	rc = RTMemCacheCreate(&pThis->hTaskCache, sizeof(BUSLOGICTASKSTATE), 0, UINT32_MAX,
3123	NULL, NULL, NULL, 0);
3124	if (RT_FAILURE(rc))
3125	return PDMDEV_SET_ERROR(pDevIns, rc,
3126	N_("BusLogic: Failed to initialize task cache\n"));
3127
3128	/* Initialize task queue. */
3129	rc = PDMDevHlpQueueCreate(pDevIns, sizeof(PDMQUEUEITEMCORE), 5, 0,
3130	buslogicNotifyQueueConsumer, true, "BusLogicTask", &pThis->pNotifierQueueR3);
3131	if (RT_FAILURE(rc))
3132	return rc;
3133	pThis->pNotifierQueueR0 = PDMQueueR0Ptr(pThis->pNotifierQueueR3);
3134	pThis->pNotifierQueueRC = PDMQueueRCPtr(pThis->pNotifierQueueR3);
3135
3136	rc = PDMDevHlpCritSectInit(pDevIns, &pThis->CritSectIntr, RT_SRC_POS, "BusLogic-Intr#%u", pDevIns->iInstance);
3137	if (RT_FAILURE(rc))
3138	return PDMDEV_SET_ERROR(pDevIns, rc,
3139	N_("BusLogic: cannot create critical section"));
3140
3141	/* Initialize per device state. */
3142	for (unsigned i = 0; i < RT_ELEMENTS(pThis->aDeviceStates); i++)
3143	{
3144	char szName[24];
3145	PBUSLOGICDEVICE pDevice = &pThis->aDeviceStates[i];
3146
3147	RTStrPrintf(szName, sizeof(szName), "Device%d", i);
3148
3149	/* Initialize static parts of the device. */
3150	pDevice->iLUN = i;
3151	pDevice->pBusLogicR3 = pThis;
3152	pDevice->pBusLogicR0 = PDMINS_2_DATA_R0PTR(pDevIns);
3153	pDevice->pBusLogicRC = PDMINS_2_DATA_RCPTR(pDevIns);
3154	pDevice->Led.u32Magic = PDMLED_MAGIC;
3155	pDevice->IBase.pfnQueryInterface = buslogicDeviceQueryInterface;
3156	pDevice->ISCSIPort.pfnSCSIRequestCompleted = buslogicDeviceSCSIRequestCompleted;
3157	pDevice->ISCSIPort.pfnQueryDeviceLocation = buslogicQueryDeviceLocation;
3158	pDevice->ILed.pfnQueryStatusLed = buslogicDeviceQueryStatusLed;
3159
3160	/* Attach SCSI driver. */
3161	rc = PDMDevHlpDriverAttach(pDevIns, pDevice->iLUN, &pDevice->IBase, &pDevice->pDrvBase, szName);
3162	if (RT_SUCCESS(rc))
3163	{
3164	/* Get SCSI connector interface. */
3165	pDevice->pDrvSCSIConnector = PDMIBASE_QUERY_INTERFACE(pDevice->pDrvBase, PDMISCSICONNECTOR);
3166	AssertMsgReturn(pDevice->pDrvSCSIConnector, ("Missing SCSI interface below\n"), VERR_PDM_MISSING_INTERFACE);
3167
3168	pDevice->fPresent = true;
3169	}
3170	else if (rc == VERR_PDM_NO_ATTACHED_DRIVER)
3171	{
3172	pDevice->pDrvBase = NULL;
3173	pDevice->fPresent = false;
3174	rc = VINF_SUCCESS;
3175	Log(("BusLogic: no driver attached to device %s\n", szName));
3176	}
3177	else
3178	{
3179	AssertLogRelMsgFailed(("BusLogic: Failed to attach %s\n", szName));
3180	return rc;
3181	}
3182	}
3183
3184	/*
3185	* Attach status driver (optional).
3186	*/
3187	PPDMIBASE pBase;
3188	rc = PDMDevHlpDriverAttach(pDevIns, PDM_STATUS_LUN, &pThis->IBase, &pBase, "Status Port");
3189	if (RT_SUCCESS(rc))
3190	pThis->pLedsConnector = PDMIBASE_QUERY_INTERFACE(pBase, PDMILEDCONNECTORS);
3191	else if (rc != VERR_PDM_NO_ATTACHED_DRIVER)
3192	{
3193	AssertMsgFailed(("Failed to attach to status driver. rc=%Rrc\n", rc));
3194	return PDMDEV_SET_ERROR(pDevIns, rc, N_("BusLogic cannot attach to status driver"));
3195	}
3196
3197	rc = PDMDevHlpSSMRegisterEx(pDevIns, BUSLOGIC_SAVED_STATE_MINOR_VERSION, sizeof(*pThis), NULL,
3198	NULL, buslogicLiveExec, NULL,
3199	NULL, buslogicSaveExec, NULL,
3200	NULL, buslogicLoadExec, buslogicLoadDone);
3201	if (RT_FAILURE(rc))
3202	return PDMDEV_SET_ERROR(pDevIns, rc, N_("BusLogic cannot register save state handlers"));
3203
3204	rc = buslogicHwReset(pThis);
3205	AssertMsgRC(rc, ("hardware reset of BusLogic host adapter failed rc=%Rrc\n", rc));
3206
3207	return rc;
3208	}
3209
3210	/**
3211	* The device registration structure.
3212	*/
3213	const PDMDEVREG g_DeviceBusLogic =
3214	{
3215	/* u32Version */
3216	PDM_DEVREG_VERSION,
3217	/* szName */
3218	"buslogic",
3219	/* szRCMod */
3220	"VBoxDDGC.gc",
3221	/* szR0Mod */
3222	"VBoxDDR0.r0",
3223	/* pszDescription */
3224	"BusLogic BT-958 SCSI host adapter.\n",
3225	/* fFlags */
3226	PDM_DEVREG_FLAGS_DEFAULT_BITS \| PDM_DEVREG_FLAGS_RC \| PDM_DEVREG_FLAGS_R0 \|
3227	PDM_DEVREG_FLAGS_FIRST_SUSPEND_NOTIFICATION \| PDM_DEVREG_FLAGS_FIRST_POWEROFF_NOTIFICATION,
3228	/* fClass */
3229	PDM_DEVREG_CLASS_STORAGE,
3230	/* cMaxInstances */
3231	~0,
3232	/* cbInstance */
3233	sizeof(BUSLOGIC),
3234	/* pfnConstruct */
3235	buslogicConstruct,
3236	/* pfnDestruct */
3237	buslogicDestruct,
3238	/* pfnRelocate */
3239	buslogicRelocate,
3240	/* pfnIOCtl */
3241	NULL,
3242	/* pfnPowerOn */
3243	NULL,
3244	/* pfnReset */
3245	buslogicReset,
3246	/* pfnSuspend */
3247	buslogicSuspend,
3248	/* pfnResume */
3249	buslogicResume,
3250	/* pfnAttach */
3251	buslogicAttach,
3252	/* pfnDetach */
3253	buslogicDetach,
3254	/* pfnQueryInterface. */
3255	NULL,
3256	/* pfnInitComplete */
3257	NULL,
3258	/* pfnPowerOff */
3259	buslogicPowerOff,
3260	/* pfnSoftReset */
3261	NULL,
3262	/* u32VersionEnd */
3263	PDM_DEVREG_VERSION
3264	};
3265
3266	#endif /* IN_RING3 */
3267	#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */
3268

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source: vbox/trunk/src/VBox/Devices/Storage/DevBusLogic.cpp@ 38791

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