DevBusLogic.cpp@ 35756

Last change on this file since 35756 was 35756, checked in by vboxsync, 14 years ago
BusLogic: Fix SMP race which results in a guest hang
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1	/* $Id: DevBusLogic.cpp 35756 2011-01-28 12:29:38Z 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	} BUSLOGIC, *PBUSLOGIC;
409
410	/** Register offsets in the I/O port space. */
411	#define BUSLOGIC_REGISTER_CONTROL 0 /* Writeonly */
412	/** Fields for the control register. */
413	# define BUSLOGIC_REGISTER_CONTROL_SCSI_BUSRESET RT_BIT(4)
414	# define BUSLOGIC_REGISTER_CONTROL_INTERRUPT_RESET RT_BIT(5)
415	# define BUSLOGIC_REGISTER_CONTROL_SOFT_RESET RT_BIT(6)
416	# define BUSLOGIC_REGISTER_CONTROL_HARD_RESET RT_BIT(7)
417
418	#define BUSLOGIC_REGISTER_STATUS 0 /* Readonly */
419	/** Fields for the status register. */
420	# define BUSLOGIC_REGISTER_STATUS_COMMAND_INVALID RT_BIT(0)
421	# define BUSLOGIC_REGISTER_STATUS_DATA_IN_REGISTER_READY RT_BIT(2)
422	# define BUSLOGIC_REGISTER_STATUS_COMMAND_PARAMETER_REGISTER_BUSY RT_BIT(3)
423	# define BUSLOGIC_REGISTER_STATUS_HOST_ADAPTER_READY RT_BIT(4)
424	# define BUSLOGIC_REGISTER_STATUS_INITIALIZATION_REQUIRED RT_BIT(5)
425	# define BUSLOGIC_REGISTER_STATUS_DIAGNOSTIC_FAILURE RT_BIT(6)
426	# define BUSLOGIC_REGISTER_STATUS_DIAGNOSTIC_ACTIVE RT_BIT(7)
427
428	#define BUSLOGIC_REGISTER_COMMAND 1 /* Writeonly */
429	#define BUSLOGIC_REGISTER_DATAIN 1 /* Readonly */
430	#define BUSLOGIC_REGISTER_INTERRUPT 2 /* Readonly */
431	/** Fields for the interrupt register. */
432	# define BUSLOGIC_REGISTER_INTERRUPT_INCOMING_MAILBOX_LOADED RT_BIT(0)
433	# define BUSLOGIC_REGISTER_INTERRUPT_OUTCOMING_MAILBOX_AVAILABLE RT_BIT(1)
434	# define BUSLOGIC_REGISTER_INTERRUPT_COMMAND_COMPLETE RT_BIT(2)
435	# define BUSLOGIC_REGISTER_INTERRUPT_EXTERNAL_BUS_RESET RT_BIT(3)
436	# define BUSLOGIC_REGISTER_INTERRUPT_INTERRUPT_VALID RT_BIT(7)
437
438	#define BUSLOGIC_REGISTER_GEOMETRY 3 /* Readonly */
439	# define BUSLOGIC_REGISTER_GEOMETRY_EXTENTED_TRANSLATION_ENABLED RT_BIT(7)
440
441	/* Structure for the INQUIRE_PCI_HOST_ADAPTER_INFORMATION reply. */
442	#pragma pack(1)
443	typedef struct ReplyInquirePCIHostAdapterInformation
444	{
445	uint8_t IsaIOPort;
446	uint8_t IRQ;
447	unsigned char LowByteTerminated:1;
448	unsigned char HighByteTerminated:1;
449	unsigned char uReserved:2; /* Reserved. */
450	unsigned char JP1:1; /* Whatever that means. */
451	unsigned char JP2:1; /* Whatever that means. */
452	unsigned char JP3:1; /* Whatever that means. */
453	/** Whether the provided info is valid. */
454	unsigned char InformationIsValid: 1;
455	uint8_t uReserved2; /* Reserved. */
456	} ReplyInquirePCIHostAdapterInformation, *PReplyInquirePCIHostAdapterInformation;
457	AssertCompileSize(ReplyInquirePCIHostAdapterInformation, 4);
458	#pragma pack()
459
460	/* Structure for the INQUIRE_CONFIGURATION reply. */
461	#pragma pack(1)
462	typedef struct ReplyInquireConfiguration
463	{
464	unsigned char uReserved1: 5;
465	bool fDmaChannel5: 1;
466	bool fDmaChannel6: 1;
467	bool fDmaChannel7: 1;
468	bool fIrqChannel9: 1;
469	bool fIrqChannel10: 1;
470	bool fIrqChannel11: 1;
471	bool fIrqChannel12: 1;
472	unsigned char uReserved2: 1;
473	bool fIrqChannel14: 1;
474	bool fIrqChannel15: 1;
475	unsigned char uReserved3: 1;
476	unsigned char uHostAdapterId: 4;
477	unsigned char uReserved4: 4;
478	} ReplyInquireConfiguration, *PReplyInquireConfiguration;
479	AssertCompileSize(ReplyInquireConfiguration, 3);
480	#pragma pack()
481
482	/* Structure for the INQUIRE_SETUP_INFORMATION reply. */
483	#pragma pack(1)
484	typedef struct ReplyInquireSetupInformationSynchronousValue
485	{
486	unsigned char uOffset: 4;
487	unsigned char uTransferPeriod: 3;
488	bool fSynchronous: 1;
489	}ReplyInquireSetupInformationSynchronousValue, *PReplyInquireSetupInformationSynchronousValue;
490	AssertCompileSize(ReplyInquireSetupInformationSynchronousValue, 1);
491	#pragma pack()
492
493	#pragma pack(1)
494	typedef struct ReplyInquireSetupInformation
495	{
496	bool fSynchronousInitiationEnabled: 1;
497	bool fParityCheckingEnabled: 1;
498	unsigned char uReserved1: 6;
499	uint8_t uBusTransferRate;
500	uint8_t uPreemptTimeOnBus;
501	uint8_t uTimeOffBus;
502	uint8_t cMailbox;
503	uint8_t MailboxAddress[3];
504	ReplyInquireSetupInformationSynchronousValue SynchronousValuesId0To7[8];
505	uint8_t uDisconnectPermittedId0To7;
506	uint8_t uSignature;
507	uint8_t uCharacterD;
508	uint8_t uHostBusType;
509	uint8_t uWideTransferPermittedId0To7;
510	uint8_t uWideTransfersActiveId0To7;
511	ReplyInquireSetupInformationSynchronousValue SynchronousValuesId8To15[8];
512	uint8_t uDisconnectPermittedId8To15;
513	uint8_t uReserved2;
514	uint8_t uWideTransferPermittedId8To15;
515	uint8_t uWideTransfersActiveId8To15;
516	} ReplyInquireSetupInformation, *PReplyInquireSetupInformation;
517	AssertCompileSize(ReplyInquireSetupInformation, 34);
518	#pragma pack()
519
520	/* Structure for the INQUIRE_EXTENDED_SETUP_INFORMATION. */
521	#pragma pack(1)
522	typedef struct ReplyInquireExtendedSetupInformation
523	{
524	uint8_t uBusType;
525	uint8_t uBiosAddress;
526	uint16_t u16ScatterGatherLimit;
527	uint8_t cMailbox;
528	uint32_t uMailboxAddressBase;
529	unsigned char uReserved1: 2;
530	bool fFastEISA: 1;
531	unsigned char uReserved2: 3;
532	bool fLevelSensitiveInterrupt: 1;
533	unsigned char uReserved3: 1;
534	unsigned char aFirmwareRevision[3];
535	bool fHostWideSCSI: 1;
536	bool fHostDifferentialSCSI: 1;
537	bool fHostSupportsSCAM: 1;
538	bool fHostUltraSCSI: 1;
539	bool fHostSmartTermination: 1;
540	unsigned char uReserved4: 3;
541	} ReplyInquireExtendedSetupInformation, *PReplyInquireExtendedSetupInformation;
542	AssertCompileSize(ReplyInquireExtendedSetupInformation, 14);
543	#pragma pack()
544
545	/* Structure for the INITIALIZE EXTENDED MAILBOX request. */
546	#pragma pack(1)
547	typedef struct RequestInitializeExtendedMailbox
548	{
549	/** Number of mailboxes in guest memory. */
550	uint8_t cMailbox;
551	/** Physical address of the first mailbox. */
552	uint32_t uMailboxBaseAddress;
553	} RequestInitializeExtendedMailbox, *PRequestInitializeExtendedMailbox;
554	AssertCompileSize(RequestInitializeExtendedMailbox, 5);
555	#pragma pack()
556
557	/*
558	* Structure of a mailbox in guest memory.
559	* The incoming and outgoing mailbox have the same size
560	* but the incoming one has some more fields defined which
561	* are marked as reserved in the outgoing one.
562	* The last field is also different from the type.
563	* For outgoing mailboxes it is the action and
564	* for incoming ones the completion status code for the task.
565	* We use one structure for both types.
566	*/
567	#pragma pack(1)
568	typedef struct Mailbox
569	{
570	/** Physical address of the CCB structure in the guest memory. */
571	uint32_t u32PhysAddrCCB;
572	/** Type specific data. */
573	union
574	{
575	/** For outgoing mailboxes. */
576	struct
577	{
578	/** Reserved */
579	uint8_t uReserved[3];
580	/** Action code. */
581	uint8_t uActionCode;
582	} out;
583	/** For incoming mailboxes. */
584	struct
585	{
586	/** The host adapter status after finishing the request. */
587	uint8_t uHostAdapterStatus;
588	/** The status of the device which executed the request after executing it. */
589	uint8_t uTargetDeviceStatus;
590	/** Reserved. */
591	uint8_t uReserved;
592	/** The completion status code of the request. */
593	uint8_t uCompletionCode;
594	} in;
595	} u;
596	} Mailbox, *PMailbox;
597	AssertCompileSize(Mailbox, 8);
598	#pragma pack()
599
600	/*
601	* Action codes for outgoing mailboxes.
602	*/
603	enum BUSLOGIC_MAILBOX_OUTGOING_ACTION
604	{
605	BUSLOGIC_MAILBOX_OUTGOING_ACTION_FREE = 0x00,
606	BUSLOGIC_MAILBOX_OUTGOING_ACTION_START_COMMAND = 0x01,
607	BUSLOGIC_MAILBOX_OUTGOING_ACTION_ABORT_COMMAND = 0x02
608	};
609
610	/*
611	* Completion codes for incoming mailboxes.
612	*/
613	enum BUSLOGIC_MAILBOX_INCOMING_COMPLETION
614	{
615	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_FREE = 0x00,
616	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_WITHOUT_ERROR = 0x01,
617	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_ABORTED = 0x02,
618	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_ABORTED_NOT_FOUND = 0x03,
619	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_WITH_ERROR = 0x04,
620	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_INVALID_CCB = 0x05
621	};
622
623	/*
624	* Host adapter status for incoming mailboxes.
625	*/
626	enum BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS
627	{
628	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_CMD_COMPLETED = 0x00,
629	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_LINKED_CMD_COMPLETED = 0x0a,
630	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_LINKED_CMD_COMPLETED_WITH_FLAG = 0x0b,
631	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_DATA_UNDERUN = 0x0c,
632	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_SCSI_SELECTION_TIMEOUT = 0x11,
633	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_DATA_OVERRUN = 0x12,
634	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_UNEXPECTED_BUS_FREE = 0x13,
635	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_INVALID_BUS_PHASE_REQUESTED = 0x14,
636	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_INVALID_OUTGOING_MAILBOX_ACTION_CODE = 0x15,
637	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_INVALID_COMMAND_OPERATION_CODE = 0x16,
638	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_LINKED_CCB_HAS_INVALID_LUN = 0x17,
639	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_INVALID_COMMAND_PARAMETER = 0x1a,
640	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_AUTO_REQUEST_SENSE_FAILED = 0x1b,
641	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_TAGGED_QUEUING_MESSAGE_REJECTED = 0x1c,
642	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_UNSUPPORTED_MESSAGE_RECEIVED = 0x1d,
643	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_HOST_ADAPTER_HARDWARE_FAILED = 0x20,
644	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_TARGET_FAILED_RESPONSE_TO_ATN = 0x21,
645	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_HOST_ADAPTER_ASSERTED_RST = 0x22,
646	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_OTHER_DEVICE_ASSERTED_RST = 0x23,
647	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_TARGET_DEVICE_RECONNECTED_IMPROPERLY = 0x24,
648	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_HOST_ADAPTER_ASSERTED_BUS_DEVICE_RESET = 0x25,
649	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_ABORT_QUEUE_GENERATED = 0x26,
650	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_HOST_ADAPTER_SOFTWARE_ERROR = 0x27,
651	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_HOST_ADAPTER_HARDWARE_TIMEOUT_ERROR = 0x30,
652	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_SCSI_PARITY_ERROR_DETECTED = 0x34
653	};
654
655	/*
656	* Device status codes for incoming mailboxes.
657	*/
658	enum BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS
659	{
660	BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS_OPERATION_GOOD = 0x00,
661	BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS_CHECK_CONDITION = 0x02,
662	BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS_DEVICE_BUSY = 0x08
663	};
664
665	/*
666	* Opcode types for CCB.
667	*/
668	enum BUSLOGIC_CCB_OPCODE
669	{
670	BUSLOGIC_CCB_OPCODE_INITIATOR_CCB = 0x00,
671	BUSLOGIC_CCB_OPCODE_TARGET_CCB = 0x01,
672	BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_SCATTER_GATHER = 0x02,
673	BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_RESIDUAL_DATA_LENGTH = 0x03,
674	BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_RESIDUAL_SCATTER_GATHER = 0x04,
675	BUSLOGIC_CCB_OPCODE_BUS_DEVICE_RESET = 0x81
676	};
677
678	/*
679	* Data transfer direction.
680	*/
681	enum BUSLOGIC_CCB_DIRECTION
682	{
683	BUSLOGIC_CCB_DIRECTION_UNKNOWN = 0x00,
684	BUSLOGIC_CCB_DIRECTION_IN = 0x01,
685	BUSLOGIC_CCB_DIRECTION_OUT = 0x02,
686	BUSLOGIC_CCB_DIRECTION_NO_DATA = 0x03
687	};
688
689	/*
690	* The command control block for a SCSI request.
691	*/
692	#pragma pack(1)
693	typedef struct CommandControlBlock
694	{
695	/** Opcode. */
696	uint8_t uOpcode;
697	/** Reserved */
698	unsigned char uReserved1: 3;
699	/** Data direction for the request. */
700	unsigned char uDataDirection: 2;
701	/** Whether the request is tag queued. */
702	bool fTagQueued: 1;
703	/** Queue tag mode. */
704	unsigned char uQueueTag: 2;
705	/** Length of the SCSI CDB. */
706	uint8_t cbCDB;
707	/** Sense data length. */
708	uint8_t cbSenseData;
709	/** Data length. */
710	uint32_t cbData;
711	/** Data pointer.
712	* This points to the data region or a scatter gather list based on the opcode.
713	*/
714	uint32_t u32PhysAddrData;
715	/** Reserved. */
716	uint8_t uReserved2[2];
717	/** Host adapter status. */
718	uint8_t uHostAdapterStatus;
719	/** Device adapter status. */
720	uint8_t uDeviceStatus;
721	/** The device the request is send to. */
722	uint8_t uTargetId;
723	/*The LUN in the device. /
724	unsigned char uLogicalUnit: 5;
725	/** Legacy tag. */
726	bool fLegacyTagEnable: 1;
727	/** Legacy queue tag. */
728	unsigned char uLegacyQueueTag: 2;
729	/** The SCSI CDB. */
730	uint8_t aCDB[12]; /* A CDB can be 12 bytes long. */
731	/** Reserved. */
732	uint8_t uReserved3[6];
733	/** Sense data pointer. */
734	uint32_t u32PhysAddrSenseData;
735	} CommandControlBlock, *PCommandControlBlock;
736	AssertCompileSize(CommandControlBlock, 40);
737	#pragma pack()
738
739	#pragma pack(1)
740	typedef struct ScatterGatherEntry
741	{
742	uint32_t cbSegment;
743	uint32_t u32PhysAddrSegmentBase;
744	} ScatterGatherEntry, *PScatterGatherEntry;
745	AssertCompileSize(ScatterGatherEntry, 8);
746	#pragma pack()
747
748	/*
749	* Task state for a CCB request.
750	*/
751	typedef struct BUSLOGICTASKSTATE
752	{
753	/** Next in the redo list. */
754	PBUSLOGICTASKSTATE pRedoNext;
755	/** Device this task is assigned to. */
756	R3PTRTYPE(PBUSLOGICDEVICE) pTargetDeviceR3;
757	/** The command control block from the guest. */
758	CommandControlBlock CommandControlBlockGuest;
759	/** Mailbox read from guest memory. */
760	Mailbox MailboxGuest;
761	/** The SCSI request we pass to the underlying SCSI engine. */
762	PDMSCSIREQUEST PDMScsiRequest;
763	/** Data buffer segment */
764	RTSGSEG DataSeg;
765	/** Pointer to the R3 sense buffer. */
766	uint8_t *pbSenseBuffer;
767	/** Flag whether this is a request from the BIOS. */
768	bool fBIOS;
769	} BUSLOGICTASKSTATE;
770
771	#ifndef VBOX_DEVICE_STRUCT_TESTCASE
772
773	RT_C_DECLS_BEGIN
774	PDMBOTHCBDECL(int) buslogicIOPortWrite (PPDMDEVINS pDevIns, void *pvUser,
775	RTIOPORT Port, uint32_t u32, unsigned cb);
776	PDMBOTHCBDECL(int) buslogicIOPortRead (PPDMDEVINS pDevIns, void *pvUser,
777	RTIOPORT Port, uint32_t *pu32, unsigned cb);
778	PDMBOTHCBDECL(int) buslogicMMIOWrite(PPDMDEVINS pDevIns, void *pvUser,
779	RTGCPHYS GCPhysAddr, void *pv, unsigned cb);
780	PDMBOTHCBDECL(int) buslogicMMIORead(PPDMDEVINS pDevIns, void *pvUser,
781	RTGCPHYS GCPhysAddr, void *pv, unsigned cb);
782	RT_C_DECLS_END
783
784	#define PDMIBASE_2_PBUSLOGICDEVICE(pInterface) ( (PBUSLOGICDEVICE)((uintptr_t)(pInterface) - RT_OFFSETOF(BUSLOGICDEVICE, IBase)) )
785	#define PDMISCSIPORT_2_PBUSLOGICDEVICE(pInterface) ( (PBUSLOGICDEVICE)((uintptr_t)(pInterface) - RT_OFFSETOF(BUSLOGICDEVICE, ISCSIPort)) )
786	#define PDMILEDPORTS_2_PBUSLOGICDEVICE(pInterface) ( (PBUSLOGICDEVICE)((uintptr_t)(pInterface) - RT_OFFSETOF(BUSLOGICDEVICE, ILed)) )
787	#define PDMIBASE_2_PBUSLOGIC(pInterface) ( (PBUSLOGIC)((uintptr_t)(pInterface) - RT_OFFSETOF(BUSLOGIC, IBase)) )
788	#define PDMILEDPORTS_2_PBUSLOGIC(pInterface) ( (PBUSLOGIC)((uintptr_t)(pInterface) - RT_OFFSETOF(BUSLOGIC, ILeds)) )
789
790	/**
791	* Deasserts the interrupt line of the BusLogic adapter.
792	*
793	* @returns nothing
794	* @param pBuslogic Pointer to the BusLogic device instance.
795	*/
796	static void buslogicClearInterrupt(PBUSLOGIC pBusLogic)
797	{
798	LogFlowFunc(("pBusLogic=%#p\n", pBusLogic));
799	pBusLogic->regInterrupt = 0;
800	PDMDevHlpPCISetIrq(pBusLogic->CTX_SUFF(pDevIns), 0, 0);
801	}
802
803	/**
804	* Assert IRQ line of the BusLogic adapter.
805	*
806	* @returns nothing.
807	* @param pBusLogic Pointer to the BusLogic device instance.
808	* @param fSuppressIrq Flag to suppress IRQ generation regardless of fIRQEnabled
809	*/
810	static void buslogicSetInterrupt(PBUSLOGIC pBusLogic, bool fSuppressIrq)
811	{
812	LogFlowFunc(("pBusLogic=%#p\n", pBusLogic));
813	pBusLogic->regInterrupt \|= BUSLOGIC_REGISTER_INTERRUPT_INTERRUPT_VALID;
814	if (pBusLogic->fIRQEnabled && !fSuppressIrq)
815	PDMDevHlpPCISetIrq(pBusLogic->CTX_SUFF(pDevIns), 0, 1);
816	}
817
818	#if defined(IN_RING3)
819	/**
820	* Initialize local RAM of host adapter with default values.
821	*
822	* @returns nothing.
823	* @param pBusLogic.
824	*/
825	static void buslogicInitializeLocalRam(PBUSLOGIC pBusLogic)
826	{
827	/*
828	* These values are mostly from what I think is right
829	* looking at the dmesg output from a Linux guest inside
830	* a VMware server VM.
831	*
832	* So they don't have to be right :)
833	*/
834	memset(pBusLogic->LocalRam.u8View, 0, sizeof(HostAdapterLocalRam));
835	pBusLogic->LocalRam.structured.autoSCSIData.fLevelSensitiveInterrupt = true;
836	pBusLogic->LocalRam.structured.autoSCSIData.fParityCheckingEnabled = true;
837	pBusLogic->LocalRam.structured.autoSCSIData.fExtendedTranslation = true; /* Same as in geometry register. */
838	pBusLogic->LocalRam.structured.autoSCSIData.u16DeviceEnabledMask = ~0; /* All enabled. Maybe mask out non present devices? */
839	pBusLogic->LocalRam.structured.autoSCSIData.u16WidePermittedMask = ~0;
840	pBusLogic->LocalRam.structured.autoSCSIData.u16FastPermittedMask = ~0;
841	pBusLogic->LocalRam.structured.autoSCSIData.u16SynchronousPermittedMask = ~0;
842	pBusLogic->LocalRam.structured.autoSCSIData.u16DisconnectPermittedMask = ~0;
843	pBusLogic->LocalRam.structured.autoSCSIData.fStrictRoundRobinMode = pBusLogic->fStrictRoundRobinMode;
844	pBusLogic->LocalRam.structured.autoSCSIData.u16UltraPermittedMask = ~0;
845	/* @todo calculate checksum? */
846	}
847
848	/**
849	* Do a hardware reset of the buslogic adapter.
850	*
851	* @returns VBox status code.
852	* @param pBusLogic Pointer to the BusLogic device instance.
853	*/
854	static int buslogicHwReset(PBUSLOGIC pBusLogic)
855	{
856	LogFlowFunc(("pBusLogic=%#p\n", pBusLogic));
857
858	/* Reset registers to default value. */
859	pBusLogic->regStatus = BUSLOGIC_REGISTER_STATUS_HOST_ADAPTER_READY \| BUSLOGIC_REGISTER_STATUS_INITIALIZATION_REQUIRED;
860	pBusLogic->regInterrupt = 0;
861	pBusLogic->regGeometry = BUSLOGIC_REGISTER_GEOMETRY_EXTENTED_TRANSLATION_ENABLED;
862	pBusLogic->uOperationCode = 0xff; /* No command executing. */
863	pBusLogic->iParameter = 0;
864	pBusLogic->cbCommandParametersLeft = 0;
865	pBusLogic->fIRQEnabled = true;
866	pBusLogic->fISAEnabled = true;
867	pBusLogic->uMailboxOutgoingPositionCurrent = 0;
868	pBusLogic->uMailboxIncomingPositionCurrent = 0;
869
870	buslogicInitializeLocalRam(pBusLogic);
871	vboxscsiInitialize(&pBusLogic->VBoxSCSI);
872
873	return VINF_SUCCESS;
874	}
875	#endif
876
877	/**
878	* Resets the command state machine for the next command and notifies the guest.
879	*
880	* @returns nothing.
881	* @param pBusLogic Pointer to the BusLogic device instance
882	* @param fSuppressIrq Flag to suppress IRQ generation regardless of current state
883	*/
884	static void buslogicCommandComplete(PBUSLOGIC pBusLogic, bool fSuppressIrq)
885	{
886	LogFlowFunc(("pBusLogic=%#p\n", pBusLogic));
887
888	pBusLogic->fUseLocalRam = false;
889	pBusLogic->regStatus \|= BUSLOGIC_REGISTER_STATUS_HOST_ADAPTER_READY;
890	pBusLogic->iReply = 0;
891
892	/* Modify I/O address does not generate an interrupt. */
893	if (pBusLogic->uOperationCode != BUSLOGICCOMMAND_EXECUTE_MAILBOX_COMMAND)
894	{
895	/* Notify that the command is complete. */
896	pBusLogic->regStatus &= ~BUSLOGIC_REGISTER_STATUS_DATA_IN_REGISTER_READY;
897	pBusLogic->regInterrupt \|= BUSLOGIC_REGISTER_INTERRUPT_COMMAND_COMPLETE;
898
899	buslogicSetInterrupt(pBusLogic, fSuppressIrq);
900	}
901
902	pBusLogic->uOperationCode = 0xff;
903	pBusLogic->iParameter = 0;
904	}
905
906	#if defined(IN_RING3)
907	/**
908	* Initiates a hard reset which was issued from the guest.
909	*
910	* @returns nothing
911	* @param pBusLogic Pointer to the BusLogic device instance.
912	*/
913	static void buslogicIntiateHardReset(PBUSLOGIC pBusLogic)
914	{
915	LogFlowFunc(("pBusLogic=%#p\n", pBusLogic));
916
917	buslogicHwReset(pBusLogic);
918
919	/* We set the diagnostic active in the status register. */
920	pBusLogic->regStatus \|= BUSLOGIC_REGISTER_STATUS_DIAGNOSTIC_ACTIVE;
921	}
922
923	/**
924	* Send a mailbox with set status codes to the guest.
925	*
926	* @returns nothing.
927	* @param pBusLogicR Pointer to the BubsLogic device instance.
928	* @param pTaskState Pointer to the task state with the mailbox to send.
929	* @param uHostAdapterStatus The host adapter status code to set.
930	* @param uDeviceStatus The target device status to set.
931	* @param uMailboxCompletionCode Completion status code to set in the mailbox.
932	*/
933	static void buslogicSendIncomingMailbox(PBUSLOGIC pBusLogic, PBUSLOGICTASKSTATE pTaskState,
934	uint8_t uHostAdapterStatus, uint8_t uDeviceStatus,
935	uint8_t uMailboxCompletionCode)
936	{
937	pTaskState->MailboxGuest.u.in.uHostAdapterStatus = uHostAdapterStatus;
938	pTaskState->MailboxGuest.u.in.uTargetDeviceStatus = uDeviceStatus;
939	pTaskState->MailboxGuest.u.in.uCompletionCode = uMailboxCompletionCode;
940
941	int rc = PDMCritSectEnter(&pBusLogic->CritSectIntr, VINF_SUCCESS);
942	AssertRC(rc);
943	RTGCPHYS GCPhysAddrMailboxIncoming = pBusLogic->GCPhysAddrMailboxIncomingBase + (pBusLogic->uMailboxIncomingPositionCurrent * sizeof(Mailbox));
944	RTGCPHYS GCPhysAddrCCB = (RTGCPHYS)pTaskState->MailboxGuest.u32PhysAddrCCB;
945
946	/* Update CCB. */
947	pTaskState->CommandControlBlockGuest.uHostAdapterStatus = uHostAdapterStatus;
948	pTaskState->CommandControlBlockGuest.uDeviceStatus = uDeviceStatus;
949	PDMDevHlpPhysWrite(pBusLogic->CTX_SUFF(pDevIns), GCPhysAddrCCB, &pTaskState->CommandControlBlockGuest, sizeof(CommandControlBlock));
950
951	/* Update mailbox. */
952	PDMDevHlpPhysWrite(pBusLogic->CTX_SUFF(pDevIns), GCPhysAddrMailboxIncoming, &pTaskState->MailboxGuest, sizeof(Mailbox));
953
954	/* Advance to next mailbox position. */
955	pBusLogic->uMailboxIncomingPositionCurrent++;
956	if (pBusLogic->uMailboxIncomingPositionCurrent >= pBusLogic->cMailbox)
957	pBusLogic->uMailboxIncomingPositionCurrent = 0;
958
959	pBusLogic->regInterrupt \|= BUSLOGIC_REGISTER_INTERRUPT_INCOMING_MAILBOX_LOADED;
960	buslogicSetInterrupt(pBusLogic, false);
961
962	PDMCritSectLeave(&pBusLogic->CritSectIntr);
963	}
964
965	#if defined(DEBUG)
966	/**
967	* Dumps the content of a mailbox for debugging purposes.
968	*
969	* @return nothing
970	* @param pMailbox The mialbox to dump.
971	* @param fOutgoing true if dumping the outgoing state.
972	* false if dumping the incoming state.
973	*/
974	static void buslogicDumpMailboxInfo(PMailbox pMailbox, bool fOutgoing)
975	{
976	Log(("%s: Dump for %s mailbox:\n", __FUNCTION__, fOutgoing ? "outgoing" : "incoming"));
977	Log(("%s: u32PhysAddrCCB=%#x\n", __FUNCTION__, pMailbox->u32PhysAddrCCB));
978	if (fOutgoing)
979	{
980	Log(("%s: uActionCode=%u\n", __FUNCTION__, pMailbox->u.out.uActionCode));
981	}
982	else
983	{
984	Log(("%s: uHostAdapterStatus=%u\n", __FUNCTION__, pMailbox->u.in.uHostAdapterStatus));
985	Log(("%s: uTargetDeviceStatus=%u\n", __FUNCTION__, pMailbox->u.in.uTargetDeviceStatus));
986	Log(("%s: uCompletionCode=%u\n", __FUNCTION__, pMailbox->u.in.uCompletionCode));
987	}
988	}
989
990	/**
991	* Dumps the content of a command control block for debugging purposes.
992	*
993	* @returns nothing.
994	* @param pCCB Pointer to the command control block to dump.
995	*/
996	static void buslogicDumpCCBInfo(PCommandControlBlock pCCB)
997	{
998	Log(("%s: Dump for Command Control Block:\n", __FUNCTION__));
999	Log(("%s: uOpCode=%#x\n", __FUNCTION__, pCCB->uOpcode));
1000	Log(("%s: uDataDirection=%u\n", __FUNCTION__, pCCB->uDataDirection));
1001	Log(("%s: fTagQueued=%d\n", __FUNCTION__, pCCB->fTagQueued));
1002	Log(("%s: uQueueTag=%u\n", __FUNCTION__, pCCB->uQueueTag));
1003	Log(("%s: cbCDB=%u\n", __FUNCTION__, pCCB->cbCDB));
1004	Log(("%s: cbSenseData=%u\n", __FUNCTION__, pCCB->cbSenseData));
1005	Log(("%s: cbData=%u\n", __FUNCTION__, pCCB->cbData));
1006	Log(("%s: u32PhysAddrData=%#x\n", __FUNCTION__, pCCB->u32PhysAddrData));
1007	Log(("%s: uHostAdapterStatus=%u\n", __FUNCTION__, pCCB->uHostAdapterStatus));
1008	Log(("%s: uDeviceStatus=%u\n", __FUNCTION__, pCCB->uDeviceStatus));
1009	Log(("%s: uTargetId=%u\n", __FUNCTION__, pCCB->uTargetId));
1010	Log(("%s: uLogicalUnit=%u\n", __FUNCTION__, pCCB->uLogicalUnit));
1011	Log(("%s: fLegacyTagEnable=%u\n", __FUNCTION__, pCCB->fLegacyTagEnable));
1012	Log(("%s: uLegacyQueueTag=%u\n", __FUNCTION__, pCCB->uLegacyQueueTag));
1013	Log(("%s: uCDB[0]=%#x\n", __FUNCTION__, pCCB->aCDB[0]));
1014	for (int i = 1; i < pCCB->cbCDB; i++)
1015	Log(("%s: uCDB[%d]=%u\n", __FUNCTION__, i, pCCB->aCDB[i]));
1016	Log(("%s: u32PhysAddrSenseData=%#x\n", __FUNCTION__, pCCB->u32PhysAddrSenseData));
1017	}
1018	#endif
1019
1020	/**
1021	* Allocate data buffer.
1022	*
1023	* @returns VBox status code.
1024	* @param pTaskState Pointer to the task state.
1025	*/
1026	static int buslogicDataBufferAlloc(PBUSLOGICTASKSTATE pTaskState)
1027	{
1028	PPDMDEVINS pDevIns = pTaskState->CTX_SUFF(pTargetDevice)->CTX_SUFF(pBusLogic)->CTX_SUFF(pDevIns);
1029
1030	if ( (pTaskState->CommandControlBlockGuest.uDataDirection != BUSLOGIC_CCB_DIRECTION_NO_DATA)
1031	&& (pTaskState->CommandControlBlockGuest.cbData > 0))
1032	{
1033	/*
1034	* @todo: Check following assumption and what residual means.
1035	*
1036	* The BusLogic adapter can handle two different data buffer formats.
1037	* The first one is that the data pointer entry in the CCB points to
1038	* the buffer directly. In second mode the data pointer points to a
1039	* scatter gather list which describes the buffer.
1040	*/
1041	if ( (pTaskState->CommandControlBlockGuest.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_SCATTER_GATHER)
1042	\|\| (pTaskState->CommandControlBlockGuest.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_RESIDUAL_SCATTER_GATHER))
1043	{
1044	uint32_t cScatterGatherGCRead;
1045	uint32_t iScatterGatherEntry;
1046	ScatterGatherEntry aScatterGatherReadGC[32]; /* Number of scatter gather list entries read from guest memory. */
1047	uint32_t cScatterGatherGCLeft = pTaskState->CommandControlBlockGuest.cbData / sizeof(ScatterGatherEntry);
1048	RTGCPHYS GCPhysAddrScatterGatherCurrent = (RTGCPHYS)pTaskState->CommandControlBlockGuest.u32PhysAddrData;
1049	size_t cbDataToTransfer = 0;
1050
1051	/* Count number of bytes to transfer. */
1052	do
1053	{
1054	cScatterGatherGCRead = (cScatterGatherGCLeft < RT_ELEMENTS(aScatterGatherReadGC))
1055	? cScatterGatherGCLeft
1056	: RT_ELEMENTS(aScatterGatherReadGC);
1057	cScatterGatherGCLeft -= cScatterGatherGCRead;
1058
1059	/* Read the SG entries. */
1060	PDMDevHlpPhysRead(pDevIns, GCPhysAddrScatterGatherCurrent, &aScatterGatherReadGC[0],
1061	cScatterGatherGCRead * sizeof(ScatterGatherEntry));
1062
1063	for (iScatterGatherEntry = 0; iScatterGatherEntry < cScatterGatherGCRead; iScatterGatherEntry++)
1064	{
1065	RTGCPHYS GCPhysAddrDataBase;
1066
1067	Log(("%s: iScatterGatherEntry=%u\n", __FUNCTION__, iScatterGatherEntry));
1068
1069	GCPhysAddrDataBase = (RTGCPHYS)aScatterGatherReadGC[iScatterGatherEntry].u32PhysAddrSegmentBase;
1070	cbDataToTransfer += aScatterGatherReadGC[iScatterGatherEntry].cbSegment;
1071
1072	Log(("%s: GCPhysAddrDataBase=%RGp cbDataToTransfer=%u\n",
1073	__FUNCTION__, GCPhysAddrDataBase,
1074	aScatterGatherReadGC[iScatterGatherEntry].cbSegment));
1075	}
1076
1077	/* Set address to the next entries to read. */
1078	GCPhysAddrScatterGatherCurrent += cScatterGatherGCRead * sizeof(ScatterGatherEntry);
1079	} while (cScatterGatherGCLeft > 0);
1080
1081	Log(("%s: cbDataToTransfer=%d\n", __FUNCTION__, cbDataToTransfer));
1082
1083	/* Allocate buffer */
1084	pTaskState->DataSeg.cbSeg = cbDataToTransfer;
1085	pTaskState->DataSeg.pvSeg = RTMemAlloc(pTaskState->DataSeg.cbSeg);
1086	if (!pTaskState->DataSeg.pvSeg)
1087	return VERR_NO_MEMORY;
1088
1089	/* Copy the data if needed */
1090	if (pTaskState->CommandControlBlockGuest.uDataDirection == BUSLOGIC_CCB_DIRECTION_OUT)
1091	{
1092	cScatterGatherGCLeft = pTaskState->CommandControlBlockGuest.cbData / sizeof(ScatterGatherEntry);
1093	GCPhysAddrScatterGatherCurrent = (RTGCPHYS)pTaskState->CommandControlBlockGuest.u32PhysAddrData;
1094	uint8_t pbData = (uint8_t )pTaskState->DataSeg.pvSeg;
1095
1096	do
1097	{
1098	cScatterGatherGCRead = (cScatterGatherGCLeft < RT_ELEMENTS(aScatterGatherReadGC))
1099	? cScatterGatherGCLeft
1100	: RT_ELEMENTS(aScatterGatherReadGC);
1101	cScatterGatherGCLeft -= cScatterGatherGCRead;
1102
1103	/* Read the SG entries. */
1104	PDMDevHlpPhysRead(pDevIns, GCPhysAddrScatterGatherCurrent, &aScatterGatherReadGC[0],
1105	cScatterGatherGCRead * sizeof(ScatterGatherEntry));
1106
1107	for (iScatterGatherEntry = 0; iScatterGatherEntry < cScatterGatherGCRead; iScatterGatherEntry++)
1108	{
1109	RTGCPHYS GCPhysAddrDataBase;
1110
1111	Log(("%s: iScatterGatherEntry=%u\n", __FUNCTION__, iScatterGatherEntry));
1112
1113	GCPhysAddrDataBase = (RTGCPHYS)aScatterGatherReadGC[iScatterGatherEntry].u32PhysAddrSegmentBase;
1114	cbDataToTransfer = aScatterGatherReadGC[iScatterGatherEntry].cbSegment;
1115
1116	Log(("%s: GCPhysAddrDataBase=%RGp cbDataToTransfer=%u\n", __FUNCTION__, GCPhysAddrDataBase, cbDataToTransfer));
1117
1118	PDMDevHlpPhysRead(pDevIns, GCPhysAddrDataBase, pbData, cbDataToTransfer);
1119	pbData += cbDataToTransfer;
1120	}
1121
1122	/* Set address to the next entries to read. */
1123	GCPhysAddrScatterGatherCurrent += cScatterGatherGCRead * sizeof(ScatterGatherEntry);
1124	} while (cScatterGatherGCLeft > 0);
1125	}
1126
1127	}
1128	else if ( pTaskState->CommandControlBlockGuest.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB
1129	\|\| pTaskState->CommandControlBlockGuest.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_RESIDUAL_DATA_LENGTH)
1130	{
1131	/* The buffer is not scattered. */
1132	RTGCPHYS GCPhysAddrDataBase = (RTGCPHYS)pTaskState->CommandControlBlockGuest.u32PhysAddrData;
1133
1134	AssertMsg(GCPhysAddrDataBase != 0, ("Physical address is 0\n"));
1135
1136	pTaskState->DataSeg.cbSeg = pTaskState->CommandControlBlockGuest.cbData;
1137	pTaskState->DataSeg.pvSeg = RTMemAlloc(pTaskState->DataSeg.cbSeg);
1138	if (!pTaskState->DataSeg.pvSeg)
1139	return VERR_NO_MEMORY;
1140
1141	Log(("Non scattered buffer:\n"));
1142	Log(("u32PhysAddrData=%#x\n", pTaskState->CommandControlBlockGuest.u32PhysAddrData));
1143	Log(("cbData=%u\n", pTaskState->CommandControlBlockGuest.cbData));
1144	Log(("GCPhysAddrDataBase=0x%RGp\n", GCPhysAddrDataBase));
1145
1146	/* Copy the data into the buffer. */
1147	PDMDevHlpPhysRead(pDevIns, GCPhysAddrDataBase, pTaskState->DataSeg.pvSeg, pTaskState->DataSeg.cbSeg);
1148	}
1149	}
1150
1151	return VINF_SUCCESS;
1152	}
1153
1154	/**
1155	* Free allocated resources used for the scatter gather list.
1156	*
1157	* @returns nothing.
1158	* @param pTaskState Pointer to the task state.
1159	*/
1160	static void buslogicDataBufferFree(PBUSLOGICTASKSTATE pTaskState)
1161	{
1162	PPDMDEVINS pDevIns = pTaskState->CTX_SUFF(pTargetDevice)->CTX_SUFF(pBusLogic)->CTX_SUFF(pDevIns);
1163
1164	if ( (pTaskState->CommandControlBlockGuest.cbData > 0)
1165	&& ( (pTaskState->CommandControlBlockGuest.uDataDirection == BUSLOGIC_CCB_DIRECTION_IN)
1166	\|\| (pTaskState->CommandControlBlockGuest.uDataDirection == BUSLOGIC_CCB_DIRECTION_UNKNOWN)))
1167	{
1168	if ( (pTaskState->CommandControlBlockGuest.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_SCATTER_GATHER)
1169	\|\| (pTaskState->CommandControlBlockGuest.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_RESIDUAL_SCATTER_GATHER))
1170	{
1171	uint32_t cScatterGatherGCRead;
1172	uint32_t iScatterGatherEntry;
1173	ScatterGatherEntry aScatterGatherReadGC[32]; /* Number of scatter gather list entries read from guest memory. */
1174	uint32_t cScatterGatherGCLeft = pTaskState->CommandControlBlockGuest.cbData / sizeof(ScatterGatherEntry);
1175	RTGCPHYS GCPhysAddrScatterGatherCurrent = (RTGCPHYS)pTaskState->CommandControlBlockGuest.u32PhysAddrData;
1176	uint8_t pbData = (uint8_t )pTaskState->DataSeg.pvSeg;
1177
1178	do
1179	{
1180	cScatterGatherGCRead = (cScatterGatherGCLeft < RT_ELEMENTS(aScatterGatherReadGC))
1181	? cScatterGatherGCLeft
1182	: RT_ELEMENTS(aScatterGatherReadGC);
1183	cScatterGatherGCLeft -= cScatterGatherGCRead;
1184
1185	/* Read the SG entries. */
1186	PDMDevHlpPhysRead(pDevIns, GCPhysAddrScatterGatherCurrent, &aScatterGatherReadGC[0],
1187	cScatterGatherGCRead * sizeof(ScatterGatherEntry));
1188
1189	for (iScatterGatherEntry = 0; iScatterGatherEntry < cScatterGatherGCRead; iScatterGatherEntry++)
1190	{
1191	RTGCPHYS GCPhysAddrDataBase;
1192	size_t cbDataToTransfer;
1193
1194	Log(("%s: iScatterGatherEntry=%u\n", __FUNCTION__, iScatterGatherEntry));
1195
1196	GCPhysAddrDataBase = (RTGCPHYS)aScatterGatherReadGC[iScatterGatherEntry].u32PhysAddrSegmentBase;
1197	cbDataToTransfer = aScatterGatherReadGC[iScatterGatherEntry].cbSegment;
1198
1199	Log(("%s: GCPhysAddrDataBase=%RGp cbDataToTransfer=%u\n", __FUNCTION__, GCPhysAddrDataBase, cbDataToTransfer));
1200
1201	PDMDevHlpPhysWrite(pDevIns, GCPhysAddrDataBase, pbData, cbDataToTransfer);
1202	pbData += cbDataToTransfer;
1203	}
1204
1205	/* Set address to the next entries to read. */
1206	GCPhysAddrScatterGatherCurrent += cScatterGatherGCRead * sizeof(ScatterGatherEntry);
1207	} while (cScatterGatherGCLeft > 0);
1208
1209	}
1210	else if ( pTaskState->CommandControlBlockGuest.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB
1211	\|\| pTaskState->CommandControlBlockGuest.uOpcode == BUSLOGIC_CCB_OPCODE_INITIATOR_CCB_RESIDUAL_DATA_LENGTH)
1212	{
1213	/* The buffer is not scattered. */
1214	RTGCPHYS GCPhysAddrDataBase = (RTGCPHYS)pTaskState->CommandControlBlockGuest.u32PhysAddrData;
1215
1216	AssertMsg(GCPhysAddrDataBase != 0, ("Physical address is 0\n"));
1217
1218	Log(("Non scattered buffer:\n"));
1219	Log(("u32PhysAddrData=%#x\n", pTaskState->CommandControlBlockGuest.u32PhysAddrData));
1220	Log(("cbData=%u\n", pTaskState->CommandControlBlockGuest.cbData));
1221	Log(("GCPhysAddrDataBase=0x%RGp\n", GCPhysAddrDataBase));
1222
1223	/* Copy the data into the guest memory. */
1224	PDMDevHlpPhysWrite(pDevIns, GCPhysAddrDataBase, pTaskState->DataSeg.pvSeg, pTaskState->DataSeg.cbSeg);
1225	}
1226	}
1227
1228	RTMemFree(pTaskState->DataSeg.pvSeg);
1229	pTaskState->DataSeg.pvSeg = NULL;
1230	pTaskState->DataSeg.cbSeg = 0;
1231	}
1232
1233	/**
1234	* Free the sense buffer.
1235	*
1236	* @returns nothing.
1237	* @param pTaskState Pointer to the task state.
1238	* @param fCopy If sense data should be copied to guest memory.
1239	*/
1240	static void buslogicSenseBufferFree(PBUSLOGICTASKSTATE pTaskState, bool fCopy)
1241	{
1242	PPDMDEVINS pDevIns = pTaskState->CTX_SUFF(pTargetDevice)->CTX_SUFF(pBusLogic)->CTX_SUFF(pDevIns);
1243	RTGCPHYS GCPhysAddrSenseBuffer = (RTGCPHYS)pTaskState->CommandControlBlockGuest.u32PhysAddrSenseData;
1244	uint32_t cbSenseBuffer = pTaskState->CommandControlBlockGuest.cbSenseData;
1245
1246	/* Copy into guest memory. */
1247	if (fCopy)
1248	PDMDevHlpPhysWrite(pDevIns, GCPhysAddrSenseBuffer, pTaskState->pbSenseBuffer, cbSenseBuffer);
1249
1250	RTMemFree(pTaskState->pbSenseBuffer);
1251	pTaskState->pbSenseBuffer = NULL;
1252	}
1253
1254	/**
1255	* Alloc the sense buffer.
1256	*
1257	* @returns VBox status code.
1258	* @param pTaskState Pointer to the task state.
1259	* @note Current assumption is that the sense buffer is not scattered and does not cross a page boundary.
1260	*/
1261	static int buslogicSenseBufferAlloc(PBUSLOGICTASKSTATE pTaskState)
1262	{
1263	PPDMDEVINS pDevIns = pTaskState->CTX_SUFF(pTargetDevice)->CTX_SUFF(pBusLogic)->CTX_SUFF(pDevIns);
1264	uint32_t cbSenseBuffer = pTaskState->CommandControlBlockGuest.cbSenseData;
1265
1266	pTaskState->pbSenseBuffer = (uint8_t *)RTMemAllocZ(cbSenseBuffer);
1267	if (!pTaskState->pbSenseBuffer)
1268	return VERR_NO_MEMORY;
1269
1270	return VINF_SUCCESS;
1271	}
1272	#endif /* IN_RING3 */
1273
1274	/**
1275	* Parses the command buffer and executes it.
1276	*
1277	* @returns VBox status code.
1278	* @param pBusLogic Pointer to the BusLogic device instance.
1279	*/
1280	static int buslogicProcessCommand(PBUSLOGIC pBusLogic)
1281	{
1282	int rc = VINF_SUCCESS;
1283	bool fSuppressIrq = false;
1284
1285	LogFlowFunc(("pBusLogic=%#p\n", pBusLogic));
1286	AssertMsg(pBusLogic->uOperationCode != 0xff, ("There is no command to execute\n"));
1287
1288	switch (pBusLogic->uOperationCode)
1289	{
1290	case BUSLOGICCOMMAND_INQUIRE_PCI_HOST_ADAPTER_INFORMATION:
1291	{
1292	PReplyInquirePCIHostAdapterInformation pReply = (PReplyInquirePCIHostAdapterInformation)pBusLogic->aReplyBuffer;
1293	memset(pReply, 0, sizeof(ReplyInquirePCIHostAdapterInformation));
1294
1295	/* It seems VMware does not provide valid information here too, lets do the same :) */
1296	pReply->InformationIsValid = 0;
1297	pReply->IsaIOPort = 0xff; /* Make it invalid. */
1298	pBusLogic->cbReplyParametersLeft = sizeof(ReplyInquirePCIHostAdapterInformation);
1299	break;
1300	}
1301	case BUSLOGICCOMMAND_MODIFY_IO_ADDRESS:
1302	{
1303	pBusLogic->cbReplyParametersLeft = 0;
1304	if (pBusLogic->aCommandBuffer[0] == 0x06)
1305	{
1306	Log(("Disabling ISA I/O ports.\n"));
1307	pBusLogic->fISAEnabled = false;
1308	}
1309	fSuppressIrq = true;
1310	break;
1311	}
1312	case BUSLOGICCOMMAND_INQUIRE_BOARD_ID:
1313	{
1314	/* The special option byte is important: If it is '0' or 'B', Windows NT drivers
1315	* for Adaptec AHA-154x may claim the adapter. The BusLogic drivers will claim
1316	* the adapter only when the byte is not '0' or 'B'.
1317	*/
1318	pBusLogic->aReplyBuffer[0] = 'A'; /* Firmware option bytes */
1319	pBusLogic->aReplyBuffer[1] = 'A'; /* Special option byte */
1320
1321	/* We report version 5.07B. This reply will provide the first two digits. */
1322	pBusLogic->aReplyBuffer[2] = '5'; /* Major version 5 */
1323	pBusLogic->aReplyBuffer[3] = '0'; /* Minor version 0 */
1324	pBusLogic->cbReplyParametersLeft = 4; /* Reply is 4 bytes long */
1325	break;
1326	}
1327	case BUSLOGICCOMMAND_INQUIRE_FIRMWARE_VERSION_3RD_LETTER:
1328	{
1329	pBusLogic->aReplyBuffer[0] = '7';
1330	pBusLogic->cbReplyParametersLeft = 1;
1331	break;
1332	}
1333	case BUSLOGICCOMMAND_INQUIRE_FIRMWARE_VERSION_LETTER:
1334	{
1335	pBusLogic->aReplyBuffer[0] = 'B';
1336	pBusLogic->cbReplyParametersLeft = 1;
1337	break;
1338	}
1339	case BUSLOGICCOMMAND_INQUIRE_HOST_ADAPTER_MODEL_NUMBER:
1340	{
1341	/* The reply length is set by the guest and is found in the first byte of the command buffer. */
1342	pBusLogic->cbReplyParametersLeft = pBusLogic->aCommandBuffer[0];
1343	memset(pBusLogic->aReplyBuffer, ' ', pBusLogic->cbReplyParametersLeft);
1344	const char aModelName[] = "958";
1345	int cCharsToTransfer = (pBusLogic->cbReplyParametersLeft <= (sizeof(aModelName) - 1))
1346	? pBusLogic->cbReplyParametersLeft
1347	: sizeof(aModelName) - 1;
1348
1349	for (int i = 0; i < cCharsToTransfer; i++)
1350	pBusLogic->aReplyBuffer[i] = aModelName[i];
1351
1352	break;
1353	}
1354	case BUSLOGICCOMMAND_INQUIRE_CONFIGURATION:
1355	{
1356	pBusLogic->cbReplyParametersLeft = sizeof(ReplyInquireConfiguration);
1357	PReplyInquireConfiguration pReply = (PReplyInquireConfiguration)pBusLogic->aReplyBuffer;
1358	memset(pReply, 0, sizeof(ReplyInquireConfiguration));
1359
1360	pReply->uHostAdapterId = 7; /* The controller has always 7 as ID. */
1361	/*
1362	* The rest of this reply only applies for ISA adapters.
1363	* This is a PCI adapter so they are not important and are skipped.
1364	*/
1365	break;
1366	}
1367	case BUSLOGICCOMMAND_INQUIRE_EXTENDED_SETUP_INFORMATION:
1368	{
1369	/* The reply length is set by the guest and is found in the first byte of the command buffer. */
1370	pBusLogic->cbReplyParametersLeft = pBusLogic->aCommandBuffer[0];
1371	PReplyInquireExtendedSetupInformation pReply = (PReplyInquireExtendedSetupInformation)pBusLogic->aReplyBuffer;
1372	memset(pReply, 0, sizeof(ReplyInquireExtendedSetupInformation));
1373
1374	//@todo: should this reflect the RAM contents (AutoSCSIRam)?
1375	pReply->uBusType = 'E'; /* EISA style */
1376	pReply->u16ScatterGatherLimit = 8192;
1377	pReply->fLevelSensitiveInterrupt = true;
1378	pReply->fHostWideSCSI = true;
1379	pReply->fHostUltraSCSI = true;
1380	memcpy(pReply->aFirmwareRevision, "07B", sizeof(pReply->aFirmwareRevision));
1381
1382	break;
1383	}
1384	case BUSLOGICCOMMAND_INQUIRE_SETUP_INFORMATION:
1385	{
1386	/* The reply length is set by the guest and is found in the first byte of the command buffer. */
1387	pBusLogic->cbReplyParametersLeft = pBusLogic->aCommandBuffer[0];
1388	PReplyInquireSetupInformation pReply = (PReplyInquireSetupInformation)pBusLogic->aReplyBuffer;
1389	memset(pReply, 0, sizeof(ReplyInquireSetupInformation));
1390	break;
1391	}
1392	case BUSLOGICCOMMAND_FETCH_HOST_ADAPTER_LOCAL_RAM:
1393	{
1394	/*
1395	* First element in the command buffer contains start offset to read from
1396	* and second one the number of bytes to read.
1397	*/
1398	uint8_t uOffset = pBusLogic->aCommandBuffer[0];
1399	pBusLogic->cbReplyParametersLeft = pBusLogic->aCommandBuffer[1];
1400
1401	pBusLogic->fUseLocalRam = true;
1402	pBusLogic->iReply = uOffset;
1403	break;
1404	}
1405	case BUSLOGICCOMMAND_INITIALIZE_EXTENDED_MAILBOX:
1406	{
1407	PRequestInitializeExtendedMailbox pRequest = (PRequestInitializeExtendedMailbox)pBusLogic->aCommandBuffer;
1408
1409	pBusLogic->cMailbox = pRequest->cMailbox;
1410	pBusLogic->GCPhysAddrMailboxOutgoingBase = (RTGCPHYS)pRequest->uMailboxBaseAddress;
1411	/* The area for incoming mailboxes is right after the last entry of outgoing mailboxes. */
1412	pBusLogic->GCPhysAddrMailboxIncomingBase = (RTGCPHYS)pRequest->uMailboxBaseAddress + (pBusLogic->cMailbox * sizeof(Mailbox));
1413
1414	Log(("GCPhysAddrMailboxOutgoingBase=%RGp\n", pBusLogic->GCPhysAddrMailboxOutgoingBase));
1415	Log(("GCPhysAddrMailboxOutgoingBase=%RGp\n", pBusLogic->GCPhysAddrMailboxIncomingBase));
1416	Log(("cMailboxes=%u\n", pBusLogic->cMailbox));
1417
1418	pBusLogic->regStatus &= ~BUSLOGIC_REGISTER_STATUS_INITIALIZATION_REQUIRED;
1419	pBusLogic->cbReplyParametersLeft = 0;
1420	break;
1421	}
1422	case BUSLOGICCOMMAND_ENABLE_STRICT_ROUND_ROBIN_MODE:
1423	{
1424	if (pBusLogic->aCommandBuffer[0] == 0)
1425	pBusLogic->fStrictRoundRobinMode = false;
1426	else if (pBusLogic->aCommandBuffer[0] == 1)
1427	pBusLogic->fStrictRoundRobinMode = true;
1428	else
1429	AssertMsgFailed(("Invalid round robin mode %d\n", pBusLogic->aCommandBuffer[0]));
1430
1431	pBusLogic->cbReplyParametersLeft = 0;
1432	break;
1433	}
1434	case BUSLOGICCOMMAND_SET_CCB_FORMAT:
1435	{
1436	if (pBusLogic->aCommandBuffer[0] == 0)
1437	pBusLogic->fExtendedLunCCBFormat = false;
1438	else if (pBusLogic->aCommandBuffer[0] == 1)
1439	pBusLogic->fExtendedLunCCBFormat = true;
1440	else
1441	AssertMsgFailed(("Invalid CCB format %d\n", pBusLogic->aCommandBuffer[0]));
1442
1443	pBusLogic->cbReplyParametersLeft = 0;
1444	break;
1445	}
1446	case BUSLOGICCOMMAND_INQUIRE_TARGET_DEVICES:
1447	{
1448	/* Each bit which is set in the 16bit wide variable means a present device. */
1449	uint16_t u16TargetsPresentMask = 0;
1450
1451	for (uint8_t i = 0; i < RT_ELEMENTS(pBusLogic->aDeviceStates); i++)
1452	{
1453	if (pBusLogic->aDeviceStates[i].fPresent)
1454	u16TargetsPresentMask \|= (1 << i);
1455	}
1456	pBusLogic->aReplyBuffer[0] = (uint8_t)u16TargetsPresentMask;
1457	pBusLogic->aReplyBuffer[1] = (uint8_t)(u16TargetsPresentMask >> 8);
1458	pBusLogic->cbReplyParametersLeft = 2;
1459	break;
1460	}
1461	case BUSLOGICCOMMAND_INQUIRE_SYNCHRONOUS_PERIOD:
1462	{
1463	pBusLogic->cbReplyParametersLeft = pBusLogic->aCommandBuffer[0];
1464
1465	for (uint8_t i = 0; i < pBusLogic->cbReplyParametersLeft; i++)
1466	pBusLogic->aReplyBuffer[i] = 0; /* @todo Figure if we need something other here. It's not needed for the linux driver */
1467
1468	break;
1469	}
1470	case BUSLOGICCOMMAND_DISABLE_HOST_ADAPTER_INTERRUPT:
1471	{
1472	if (pBusLogic->aCommandBuffer[0] == 0)
1473	pBusLogic->fIRQEnabled = false;
1474	else
1475	pBusLogic->fIRQEnabled = true;
1476	/* No interrupt signaled regardless of enable/disable. */
1477	fSuppressIrq = true;
1478	break;
1479	}
1480	case BUSLOGICCOMMAND_ECHO_COMMAND_DATA:
1481	{
1482	pBusLogic->aReplyBuffer[0] = pBusLogic->aCommandBuffer[0];
1483	pBusLogic->cbReplyParametersLeft = 1;
1484	break;
1485	}
1486	case BUSLOGICCOMMAND_SET_PREEMPT_TIME_ON_BUS:
1487	{
1488	pBusLogic->cbReplyParametersLeft = 0;
1489	pBusLogic->LocalRam.structured.autoSCSIData.uBusOnDelay = pBusLogic->aCommandBuffer[0];
1490	Log(("Bus-on time: %d\n", pBusLogic->aCommandBuffer[0]));
1491	break;
1492	}
1493	case BUSLOGICCOMMAND_SET_TIME_OFF_BUS:
1494	{
1495	pBusLogic->cbReplyParametersLeft = 0;
1496	pBusLogic->LocalRam.structured.autoSCSIData.uBusOffDelay = pBusLogic->aCommandBuffer[0];
1497	Log(("Bus-off time: %d\n", pBusLogic->aCommandBuffer[0]));
1498	break;
1499	}
1500	case BUSLOGICCOMMAND_EXT_BIOS_INFO:
1501	case BUSLOGICCOMMAND_UNLOCK_MAILBOX:
1502	/* Commands valid for Adaptec 154xC which we don't handle since
1503	* we pretend being 154xB compatible. Just mark the command as invalid.
1504	*/
1505	Log(("Command %#x not valid for this adapter\n", pBusLogic->uOperationCode));
1506	pBusLogic->cbReplyParametersLeft = 0;
1507	pBusLogic->regStatus \|= BUSLOGIC_REGISTER_STATUS_COMMAND_INVALID;
1508	break;
1509	case BUSLOGICCOMMAND_EXECUTE_MAILBOX_COMMAND: /* Should be handled already. */
1510	default:
1511	AssertMsgFailed(("Invalid command %#x\n", pBusLogic->uOperationCode));
1512	}
1513
1514	Log(("uOperationCode=%#x, cbReplyParametersLeft=%d\n", pBusLogic->uOperationCode, pBusLogic->cbReplyParametersLeft));
1515
1516	/* Set the data in ready bit in the status register in case the command has a reply. */
1517	if (pBusLogic->cbReplyParametersLeft)
1518	pBusLogic->regStatus \|= BUSLOGIC_REGISTER_STATUS_DATA_IN_REGISTER_READY;
1519	else
1520	buslogicCommandComplete(pBusLogic, fSuppressIrq);
1521
1522	return rc;
1523	}
1524
1525	/**
1526	* Read a register from the BusLogic adapter.
1527	*
1528	* @returns VBox status code.
1529	* @param pBusLogic Pointer to the BusLogic instance data.
1530	* @param iRegister The index of the register to read.
1531	* @param pu32 Where to store the register content.
1532	*/
1533	static int buslogicRegisterRead(PBUSLOGIC pBusLogic, unsigned iRegister, uint32_t *pu32)
1534	{
1535	int rc = VINF_SUCCESS;
1536
1537	switch (iRegister)
1538	{
1539	case BUSLOGIC_REGISTER_STATUS:
1540	{
1541	*pu32 = pBusLogic->regStatus;
1542	/*
1543	* If the diagnostic active bit is set we are in a hard reset initiated from the guest.
1544	* The guest reads the status register and waits that the host adapter ready bit is set.
1545	*/
1546	if (pBusLogic->regStatus & BUSLOGIC_REGISTER_STATUS_DIAGNOSTIC_ACTIVE)
1547	{
1548	pBusLogic->regStatus &= ~BUSLOGIC_REGISTER_STATUS_DIAGNOSTIC_ACTIVE;
1549	pBusLogic->regStatus \|= BUSLOGIC_REGISTER_STATUS_HOST_ADAPTER_READY;
1550	}
1551	break;
1552	}
1553	case BUSLOGIC_REGISTER_DATAIN:
1554	{
1555	if (pBusLogic->fUseLocalRam)
1556	*pu32 = pBusLogic->LocalRam.u8View[pBusLogic->iReply];
1557	else
1558	*pu32 = pBusLogic->aReplyBuffer[pBusLogic->iReply];
1559
1560	pBusLogic->iReply++;
1561	pBusLogic->cbReplyParametersLeft--;
1562
1563	LogFlowFunc(("cbReplyParametersLeft=%u\n", pBusLogic->cbReplyParametersLeft));
1564	if (!pBusLogic->cbReplyParametersLeft)
1565	{
1566	/*
1567	* Reply finished, set command complete bit, unset data in ready bit and
1568	* interrupt the guest if enabled.
1569	*/
1570	buslogicCommandComplete(pBusLogic, false);
1571	}
1572	break;
1573	}
1574	case BUSLOGIC_REGISTER_INTERRUPT:
1575	{
1576	*pu32 = pBusLogic->regInterrupt;
1577	break;
1578	}
1579	case BUSLOGIC_REGISTER_GEOMETRY:
1580	{
1581	*pu32 = pBusLogic->regGeometry;
1582	break;
1583	}
1584	default:
1585	*pu32 = UINT32_C(0xffffffff);
1586	}
1587
1588	Log2(("%s: pu32=%p:{%.*Rhxs} iRegister=%d rc=%Rrc\n",
1589	__FUNCTION__, pu32, 1, pu32, iRegister, rc));
1590
1591	return rc;
1592	}
1593
1594	/**
1595	* Write a value to a register.
1596	*
1597	* @returns VBox status code.
1598	* @param pBusLogic Pointer to the BusLogic instance data.
1599	* @param iRegister The index of the register to read.
1600	* @param uVal The value to write.
1601	*/
1602	static int buslogicRegisterWrite(PBUSLOGIC pBusLogic, unsigned iRegister, uint8_t uVal)
1603	{
1604	int rc = VINF_SUCCESS;
1605
1606	switch (iRegister)
1607	{
1608	case BUSLOGIC_REGISTER_CONTROL:
1609	{
1610	rc = PDMCritSectEnter(&pBusLogic->CritSectIntr, VINF_IOM_HC_IOPORT_WRITE);
1611	if (rc != VINF_SUCCESS)
1612	return rc;
1613
1614	if (uVal & BUSLOGIC_REGISTER_CONTROL_INTERRUPT_RESET)
1615	buslogicClearInterrupt(pBusLogic);
1616
1617	PDMCritSectLeave(&pBusLogic->CritSectIntr);
1618
1619	if ((uVal & BUSLOGIC_REGISTER_CONTROL_HARD_RESET) \|\| (uVal & BUSLOGIC_REGISTER_CONTROL_SOFT_RESET))
1620	{
1621	#ifdef IN_RING3
1622	buslogicIntiateHardReset(pBusLogic);
1623	#else
1624	rc = VINF_IOM_HC_IOPORT_WRITE;
1625	#endif
1626	}
1627
1628	break;
1629	}
1630	case BUSLOGIC_REGISTER_COMMAND:
1631	{
1632	/* Fast path for mailbox execution command. */
1633	if ((uVal == BUSLOGICCOMMAND_EXECUTE_MAILBOX_COMMAND) && (pBusLogic->uOperationCode == 0xff))
1634	{
1635	ASMAtomicIncU32(&pBusLogic->cMailboxesReady);
1636	if (!ASMAtomicXchgBool(&pBusLogic->fNotificationSend, true))
1637	{
1638	/* Send new notification to the queue. */
1639	PPDMQUEUEITEMCORE pItem = PDMQueueAlloc(pBusLogic->CTX_SUFF(pNotifierQueue));
1640	AssertMsg(pItem, ("Allocating item for queue failed\n"));
1641	PDMQueueInsert(pBusLogic->CTX_SUFF(pNotifierQueue), (PPDMQUEUEITEMCORE)pItem);
1642	}
1643
1644	return rc;
1645	}
1646
1647	/*
1648	* Check if we are already fetch command parameters from the guest.
1649	* If not we initialize executing a new command.
1650	*/
1651	if (pBusLogic->uOperationCode == 0xff)
1652	{
1653	pBusLogic->uOperationCode = uVal;
1654	pBusLogic->iParameter = 0;
1655
1656	/* Mark host adapter as busy and clear the invalid status bit. */
1657	pBusLogic->regStatus &= ~(BUSLOGIC_REGISTER_STATUS_HOST_ADAPTER_READY \| BUSLOGIC_REGISTER_STATUS_COMMAND_INVALID);
1658
1659	/* Get the number of bytes for parameters from the command code. */
1660	switch (pBusLogic->uOperationCode)
1661	{
1662	case BUSLOGICCOMMAND_INQUIRE_FIRMWARE_VERSION_LETTER:
1663	case BUSLOGICCOMMAND_INQUIRE_BOARD_ID:
1664	case BUSLOGICCOMMAND_INQUIRE_FIRMWARE_VERSION_3RD_LETTER:
1665	case BUSLOGICCOMMAND_INQUIRE_PCI_HOST_ADAPTER_INFORMATION:
1666	case BUSLOGICCOMMAND_INQUIRE_CONFIGURATION:
1667	case BUSLOGICCOMMAND_INQUIRE_TARGET_DEVICES:
1668	pBusLogic->cbCommandParametersLeft = 0;
1669	break;
1670	case BUSLOGICCOMMAND_MODIFY_IO_ADDRESS:
1671	case BUSLOGICCOMMAND_INQUIRE_EXTENDED_SETUP_INFORMATION:
1672	case BUSLOGICCOMMAND_INQUIRE_SETUP_INFORMATION:
1673	case BUSLOGICCOMMAND_INQUIRE_HOST_ADAPTER_MODEL_NUMBER:
1674	case BUSLOGICCOMMAND_ENABLE_STRICT_ROUND_ROBIN_MODE:
1675	case BUSLOGICCOMMAND_SET_CCB_FORMAT:
1676	case BUSLOGICCOMMAND_INQUIRE_SYNCHRONOUS_PERIOD:
1677	case BUSLOGICCOMMAND_DISABLE_HOST_ADAPTER_INTERRUPT:
1678	case BUSLOGICCOMMAND_ECHO_COMMAND_DATA:
1679	case BUSLOGICCOMMAND_SET_PREEMPT_TIME_ON_BUS:
1680	case BUSLOGICCOMMAND_SET_TIME_OFF_BUS:
1681	pBusLogic->cbCommandParametersLeft = 1;
1682	break;
1683	case BUSLOGICCOMMAND_FETCH_HOST_ADAPTER_LOCAL_RAM:
1684	pBusLogic->cbCommandParametersLeft = 2;
1685	break;
1686	case BUSLOGICCOMMAND_INITIALIZE_EXTENDED_MAILBOX:
1687	pBusLogic->cbCommandParametersLeft = sizeof(RequestInitializeExtendedMailbox);
1688	break;
1689	case BUSLOGICCOMMAND_EXT_BIOS_INFO:
1690	case BUSLOGICCOMMAND_UNLOCK_MAILBOX:
1691	/* Invalid commands. */
1692	pBusLogic->cbCommandParametersLeft = 0;
1693	break;
1694	case BUSLOGICCOMMAND_EXECUTE_MAILBOX_COMMAND: /* Should not come here anymore. */
1695	default:
1696	AssertMsgFailed(("Invalid operation code %#x\n", uVal));
1697	}
1698	}
1699	else
1700	{
1701	/*
1702	* The real adapter would set the Command register busy bit in the status register.
1703	* The guest has to wait until it is unset.
1704	* We don't need to do it because the guest does not continue execution while we are in this
1705	* function.
1706	*/
1707	pBusLogic->aCommandBuffer[pBusLogic->iParameter] = uVal;
1708	pBusLogic->iParameter++;
1709	pBusLogic->cbCommandParametersLeft--;
1710	}
1711
1712	/* Start execution of command if there are no parameters left. */
1713	if (!pBusLogic->cbCommandParametersLeft)
1714	{
1715	rc = buslogicProcessCommand(pBusLogic);
1716	AssertMsgRC(rc, ("Processing command failed rc=%Rrc\n", rc));
1717	}
1718	break;
1719	}
1720	default:
1721	AssertMsgFailed(("Register not available\n"));
1722	rc = VERR_IOM_IOPORT_UNUSED;
1723	}
1724
1725	return rc;
1726	}
1727
1728	/**
1729	* Memory mapped I/O Handler for read operations.
1730	*
1731	* @returns VBox status code.
1732	*
1733	* @param pDevIns The device instance.
1734	* @param pvUser User argument.
1735	* @param GCPhysAddr Physical address (in GC) where the read starts.
1736	* @param pv Where to store the result.
1737	* @param cb Number of bytes read.
1738	*/
1739	PDMBOTHCBDECL(int) buslogicMMIORead(PPDMDEVINS pDevIns, void *pvUser,
1740	RTGCPHYS GCPhysAddr, void *pv, unsigned cb)
1741	{
1742	/* the linux driver does not make use of the MMIO area. */
1743	AssertMsgFailed(("MMIO Read\n"));
1744	return VINF_SUCCESS;
1745	}
1746
1747	/**
1748	* Memory mapped I/O Handler for write operations.
1749	*
1750	* @returns VBox status code.
1751	*
1752	* @param pDevIns The device instance.
1753	* @param pvUser User argument.
1754	* @param GCPhysAddr Physical address (in GC) where the read starts.
1755	* @param pv Where to fetch the result.
1756	* @param cb Number of bytes to write.
1757	*/
1758	PDMBOTHCBDECL(int) buslogicMMIOWrite(PPDMDEVINS pDevIns, void *pvUser,
1759	RTGCPHYS GCPhysAddr, void *pv, unsigned cb)
1760	{
1761	/* the linux driver does not make use of the MMIO area. */
1762	AssertMsgFailed(("MMIO Write\n"));
1763	return VINF_SUCCESS;
1764	}
1765
1766	/**
1767	* Port I/O Handler for IN operations.
1768	*
1769	* @returns VBox status code.
1770	*
1771	* @param pDevIns The device instance.
1772	* @param pvUser User argument.
1773	* @param uPort Port number used for the IN operation.
1774	* @param pu32 Where to store the result.
1775	* @param cb Number of bytes read.
1776	*/
1777	PDMBOTHCBDECL(int) buslogicIOPortRead (PPDMDEVINS pDevIns, void *pvUser,
1778	RTIOPORT Port, uint32_t *pu32, unsigned cb)
1779	{
1780	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);;
1781	unsigned iRegister = Port - pBusLogic->IOPortBase;
1782
1783	Assert(cb == 1);
1784
1785	return buslogicRegisterRead(pBusLogic, iRegister, pu32);
1786	}
1787
1788	/**
1789	* Port I/O Handler for OUT operations.
1790	*
1791	* @returns VBox status code.
1792	*
1793	* @param pDevIns The device instance.
1794	* @param pvUser User argument.
1795	* @param uPort Port number used for the IN operation.
1796	* @param u32 The value to output.
1797	* @param cb The value size in bytes.
1798	*/
1799	PDMBOTHCBDECL(int) buslogicIOPortWrite (PPDMDEVINS pDevIns, void *pvUser,
1800	RTIOPORT Port, uint32_t u32, unsigned cb)
1801	{
1802	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
1803	int rc = VINF_SUCCESS;
1804	unsigned iRegister = Port - pBusLogic->IOPortBase;
1805	uint8_t uVal = (uint8_t)u32;
1806
1807	Assert(cb == 1);
1808
1809	rc = buslogicRegisterWrite(pBusLogic, iRegister, (uint8_t)uVal);
1810
1811	Log2(("#%d %s: pvUser=%#p cb=%d u32=%#x Port=%#x rc=%Rrc\n",
1812	pDevIns->iInstance, __FUNCTION__, pvUser, cb, u32, Port, rc));
1813
1814	return rc;
1815	}
1816
1817	#ifdef IN_RING3
1818	/**
1819	* Port I/O Handler for IN operations - legacy port.
1820	*
1821	* @returns VBox status code.
1822	*
1823	* @param pDevIns The device instance.
1824	* @param pvUser User argument.
1825	* @param uPort Port number used for the IN operation.
1826	* @param pu32 Where to store the result.
1827	* @param cb Number of bytes read.
1828	*/
1829	static int buslogicIsaIOPortRead (PPDMDEVINS pDevIns, void *pvUser,
1830	RTIOPORT Port, uint32_t *pu32, unsigned cb)
1831	{
1832	int rc;
1833	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
1834
1835	Assert(cb == 1);
1836
1837	if (!pBusLogic->fISAEnabled)
1838	return VINF_SUCCESS;
1839
1840	rc = vboxscsiReadRegister(&pBusLogic->VBoxSCSI, (Port - BUSLOGIC_ISA_IO_PORT), pu32);
1841
1842	//Log2(("%s: pu32=%p:{%.*Rhxs} iRegister=%d rc=%Rrc\n",
1843	// __FUNCTION__, pu32, 1, pu32, (Port - BUSLOGIC_ISA_IO_PORT), rc));
1844
1845	return rc;
1846	}
1847
1848	static void buslogicWarningDiskFull(PPDMDEVINS pDevIns)
1849	{
1850	int rc;
1851	LogRel(("BusLogic#%d: Host disk full\n", pDevIns->iInstance));
1852	rc = PDMDevHlpVMSetRuntimeError(pDevIns, VMSETRTERR_FLAGS_SUSPEND \| VMSETRTERR_FLAGS_NO_WAIT, "DevBusLogic_DISKFULL",
1853	N_("Host system reported disk full. VM execution is suspended. You can resume after freeing some space"));
1854	AssertRC(rc);
1855	}
1856
1857	static void buslogicWarningFileTooBig(PPDMDEVINS pDevIns)
1858	{
1859	int rc;
1860	LogRel(("BusLogic#%d: File too big\n", pDevIns->iInstance));
1861	rc = PDMDevHlpVMSetRuntimeError(pDevIns, VMSETRTERR_FLAGS_SUSPEND \| VMSETRTERR_FLAGS_NO_WAIT, "DevBusLogic_FILETOOBIG",
1862	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"));
1863	AssertRC(rc);
1864	}
1865
1866	static void buslogicWarningISCSI(PPDMDEVINS pDevIns)
1867	{
1868	int rc;
1869	LogRel(("BusLogic#%d: iSCSI target unavailable\n", pDevIns->iInstance));
1870	rc = PDMDevHlpVMSetRuntimeError(pDevIns, VMSETRTERR_FLAGS_SUSPEND \| VMSETRTERR_FLAGS_NO_WAIT, "DevBusLogic_ISCSIDOWN",
1871	N_("The iSCSI target has stopped responding. VM execution is suspended. You can resume when it is available again"));
1872	AssertRC(rc);
1873	}
1874
1875	static void buslogicWarningUnknown(PPDMDEVINS pDevIns, int rc)
1876	{
1877	int rc2;
1878	LogRel(("BusLogic#%d: Unknown but recoverable error has occurred (rc=%Rrc)\n", pDevIns->iInstance, rc));
1879	rc2 = PDMDevHlpVMSetRuntimeError(pDevIns, VMSETRTERR_FLAGS_SUSPEND \| VMSETRTERR_FLAGS_NO_WAIT, "DevBusLogic_UNKNOWN",
1880	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);
1881	AssertRC(rc2);
1882	}
1883
1884	static void buslogicRedoSetWarning(PBUSLOGIC pThis, int rc)
1885	{
1886	if (rc == VERR_DISK_FULL)
1887	buslogicWarningDiskFull(pThis->CTX_SUFF(pDevIns));
1888	else if (rc == VERR_FILE_TOO_BIG)
1889	buslogicWarningFileTooBig(pThis->CTX_SUFF(pDevIns));
1890	else if (rc == VERR_BROKEN_PIPE \|\| rc == VERR_NET_CONNECTION_REFUSED)
1891	{
1892	/* iSCSI connection abort (first error) or failure to reestablish
1893	* connection (second error). Pause VM. On resume we'll retry. */
1894	buslogicWarningISCSI(pThis->CTX_SUFF(pDevIns));
1895	}
1896	else
1897	buslogicWarningUnknown(pThis->CTX_SUFF(pDevIns), rc);
1898	}
1899
1900
1901	static int buslogicPrepareBIOSSCSIRequest(PBUSLOGIC pBusLogic)
1902	{
1903	int rc;
1904	PBUSLOGICTASKSTATE pTaskState;
1905	uint32_t uTargetDevice;
1906
1907	rc = RTMemCacheAllocEx(pBusLogic->hTaskCache, (void **)&pTaskState);
1908	AssertMsgRCReturn(rc, ("Getting task from cache failed rc=%Rrc\n", rc), rc);
1909
1910	pTaskState->fBIOS = true;
1911
1912	rc = vboxscsiSetupRequest(&pBusLogic->VBoxSCSI, &pTaskState->PDMScsiRequest, &uTargetDevice);
1913	AssertMsgRCReturn(rc, ("Setting up SCSI request failed rc=%Rrc\n", rc), rc);
1914
1915	pTaskState->PDMScsiRequest.pvUser = pTaskState;
1916
1917	pTaskState->CTX_SUFF(pTargetDevice) = &pBusLogic->aDeviceStates[uTargetDevice];
1918
1919	if (!pTaskState->CTX_SUFF(pTargetDevice)->fPresent)
1920	{
1921	/* Device is not present. */
1922	AssertMsg(pTaskState->PDMScsiRequest.pbCDB[0] == SCSI_INQUIRY,
1923	("Device is not present but command is not inquiry\n"));
1924
1925	SCSIINQUIRYDATA ScsiInquiryData;
1926
1927	memset(&ScsiInquiryData, 0, sizeof(SCSIINQUIRYDATA));
1928	ScsiInquiryData.u5PeripheralDeviceType = SCSI_INQUIRY_DATA_PERIPHERAL_DEVICE_TYPE_UNKNOWN;
1929	ScsiInquiryData.u3PeripheralQualifier = SCSI_INQUIRY_DATA_PERIPHERAL_QUALIFIER_NOT_CONNECTED_NOT_SUPPORTED;
1930
1931	memcpy(pBusLogic->VBoxSCSI.pBuf, &ScsiInquiryData, 5);
1932
1933	rc = vboxscsiRequestFinished(&pBusLogic->VBoxSCSI, &pTaskState->PDMScsiRequest);
1934	AssertMsgRCReturn(rc, ("Finishing BIOS SCSI request failed rc=%Rrc\n", rc), rc);
1935
1936	RTMemCacheFree(pBusLogic->hTaskCache, pTaskState);
1937	}
1938	else
1939	{
1940	LogFlowFunc(("before increment %u\n", pTaskState->CTX_SUFF(pTargetDevice)->cOutstandingRequests));
1941	ASMAtomicIncU32(&pTaskState->CTX_SUFF(pTargetDevice)->cOutstandingRequests);
1942	LogFlowFunc(("after increment %u\n", pTaskState->CTX_SUFF(pTargetDevice)->cOutstandingRequests));
1943
1944	rc = pTaskState->CTX_SUFF(pTargetDevice)->pDrvSCSIConnector->pfnSCSIRequestSend(pTaskState->CTX_SUFF(pTargetDevice)->pDrvSCSIConnector,
1945	&pTaskState->PDMScsiRequest);
1946	AssertMsgRC(rc, ("Sending request to SCSI layer failed rc=%Rrc\n", rc));
1947	}
1948
1949	return rc;
1950	}
1951
1952	/**
1953	* Port I/O Handler for OUT operations - legacy port.
1954	*
1955	* @returns VBox status code.
1956	*
1957	* @param pDevIns The device instance.
1958	* @param pvUser User argument.
1959	* @param uPort Port number used for the IN operation.
1960	* @param u32 The value to output.
1961	* @param cb The value size in bytes.
1962	*/
1963	static int buslogicIsaIOPortWrite (PPDMDEVINS pDevIns, void *pvUser,
1964	RTIOPORT Port, uint32_t u32, unsigned cb)
1965	{
1966	int rc;
1967	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
1968
1969	Log2(("#%d %s: pvUser=%#p cb=%d u32=%#x Port=%#x\n",
1970	pDevIns->iInstance, __FUNCTION__, pvUser, cb, u32, Port));
1971
1972	Assert(cb == 1);
1973
1974	if (!pBusLogic->fISAEnabled)
1975	return VINF_SUCCESS;
1976
1977	rc = vboxscsiWriteRegister(&pBusLogic->VBoxSCSI, (Port - BUSLOGIC_ISA_IO_PORT), (uint8_t)u32);
1978	if (rc == VERR_MORE_DATA)
1979	{
1980	rc = buslogicPrepareBIOSSCSIRequest(pBusLogic);
1981	AssertRC(rc);
1982	}
1983	else if (RT_FAILURE(rc))
1984	AssertMsgFailed(("Writing BIOS register failed %Rrc\n", rc));
1985
1986	return VINF_SUCCESS;
1987	}
1988
1989	/**
1990	* Port I/O Handler for primary port range OUT string operations.
1991	* @see FNIOMIOPORTOUTSTRING for details.
1992	*/
1993	static DECLCALLBACK(int) buslogicIsaIOPortWriteStr(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, RTGCPTR pGCPtrSrc, PRTGCUINTREG pcTransfer, unsigned cb)
1994	{
1995	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
1996	int rc;
1997
1998	Log2(("#%d %s: pvUser=%#p cb=%d Port=%#x\n",
1999	pDevIns->iInstance, __FUNCTION__, pvUser, cb, Port));
2000
2001	rc = vboxscsiWriteString(pDevIns, &pBusLogic->VBoxSCSI, (Port - BUSLOGIC_ISA_IO_PORT),
2002	pGCPtrSrc, pcTransfer, cb);
2003	if (rc == VERR_MORE_DATA)
2004	{
2005	rc = buslogicPrepareBIOSSCSIRequest(pBusLogic);
2006	AssertRC(rc);
2007	}
2008	else if (RT_FAILURE(rc))
2009	AssertMsgFailed(("Writing BIOS register failed %Rrc\n", rc));
2010
2011	return rc;
2012	}
2013
2014	/**
2015	* Port I/O Handler for primary port range IN string operations.
2016	* @see FNIOMIOPORTINSTRING for details.
2017	*/
2018	static DECLCALLBACK(int) buslogicIsaIOPortReadStr(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, RTGCPTR pGCPtrDst, PRTGCUINTREG pcTransfer, unsigned cb)
2019	{
2020	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2021
2022	LogFlowFunc(("#%d %s: pvUser=%#p cb=%d Port=%#x\n",
2023	pDevIns->iInstance, __FUNCTION__, pvUser, cb, Port));
2024
2025	return vboxscsiReadString(pDevIns, &pBusLogic->VBoxSCSI, (Port - BUSLOGIC_ISA_IO_PORT),
2026	pGCPtrDst, pcTransfer, cb);
2027	}
2028
2029	static DECLCALLBACK(int) buslogicMMIOMap(PPCIDEVICE pPciDev, /unsigned/ int iRegion,
2030	RTGCPHYS GCPhysAddress, uint32_t cb,
2031	PCIADDRESSSPACE enmType)
2032	{
2033	PPDMDEVINS pDevIns = pPciDev->pDevIns;
2034	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2035	int rc = VINF_SUCCESS;
2036
2037	Log2(("%s: registering MMIO area at GCPhysAddr=%RGp cb=%u\n", __FUNCTION__, GCPhysAddress, cb));
2038
2039	Assert(cb >= 32);
2040
2041	if (enmType == PCI_ADDRESS_SPACE_MEM)
2042	{
2043	/* We use the assigned size here, because we currently only support page aligned MMIO ranges. */
2044	rc = PDMDevHlpMMIORegister(pDevIns, GCPhysAddress, cb, NULL,
2045	buslogicMMIOWrite, buslogicMMIORead, NULL, "BusLogic");
2046	if (RT_FAILURE(rc))
2047	return rc;
2048
2049	if (pThis->fR0Enabled)
2050	{
2051	rc = PDMDevHlpMMIORegisterR0(pDevIns, GCPhysAddress, cb, 0,
2052	"buslogicMMIOWrite", "buslogicMMIORead", NULL);
2053	if (RT_FAILURE(rc))
2054	return rc;
2055	}
2056
2057	if (pThis->fGCEnabled)
2058	{
2059	rc = PDMDevHlpMMIORegisterRC(pDevIns, GCPhysAddress, cb, 0,
2060	"buslogicMMIOWrite", "buslogicMMIORead", NULL);
2061	if (RT_FAILURE(rc))
2062	return rc;
2063	}
2064
2065	pThis->MMIOBase = GCPhysAddress;
2066	}
2067	else if (enmType == PCI_ADDRESS_SPACE_IO)
2068	{
2069	rc = PDMDevHlpIOPortRegister(pDevIns, (RTIOPORT)GCPhysAddress, 32,
2070	NULL, buslogicIOPortWrite, buslogicIOPortRead, NULL, NULL, "BusLogic");
2071	if (RT_FAILURE(rc))
2072	return rc;
2073
2074	if (pThis->fR0Enabled)
2075	{
2076	rc = PDMDevHlpIOPortRegisterR0(pDevIns, (RTIOPORT)GCPhysAddress, 32,
2077	0, "buslogicIOPortWrite", "buslogicIOPortRead", NULL, NULL, "BusLogic");
2078	if (RT_FAILURE(rc))
2079	return rc;
2080	}
2081
2082	if (pThis->fGCEnabled)
2083	{
2084	rc = PDMDevHlpIOPortRegisterRC(pDevIns, (RTIOPORT)GCPhysAddress, 32,
2085	0, "buslogicIOPortWrite", "buslogicIOPortRead", NULL, NULL, "BusLogic");
2086	if (RT_FAILURE(rc))
2087	return rc;
2088	}
2089
2090	pThis->IOPortBase = (RTIOPORT)GCPhysAddress;
2091	}
2092	else
2093	AssertMsgFailed(("Invalid enmType=%d\n", enmType));
2094
2095	return rc;
2096	}
2097
2098	static DECLCALLBACK(int) buslogicDeviceSCSIRequestCompleted(PPDMISCSIPORT pInterface, PPDMSCSIREQUEST pSCSIRequest,
2099	int rcCompletion, bool fRedo, int rcReq)
2100	{
2101	int rc;
2102	PBUSLOGICTASKSTATE pTaskState = (PBUSLOGICTASKSTATE)pSCSIRequest->pvUser;
2103	PBUSLOGICDEVICE pBusLogicDevice = pTaskState->CTX_SUFF(pTargetDevice);
2104	PBUSLOGIC pBusLogic = pBusLogicDevice->CTX_SUFF(pBusLogic);
2105
2106	LogFlowFunc(("before decrement %u\n", pBusLogicDevice->cOutstandingRequests));
2107	ASMAtomicDecU32(&pBusLogicDevice->cOutstandingRequests);
2108	LogFlowFunc(("after decrement %u\n", pBusLogicDevice->cOutstandingRequests));
2109
2110	if (fRedo)
2111	{
2112	if (!pTaskState->fBIOS)
2113	{
2114	buslogicDataBufferFree(pTaskState);
2115
2116	if (pTaskState->pbSenseBuffer)
2117	buslogicSenseBufferFree(pTaskState, false /* fCopy */);
2118	}
2119
2120	/* Add to the list. */
2121	do
2122	{
2123	pTaskState->pRedoNext = ASMAtomicReadPtrT(&pBusLogic->pTasksRedoHead, PBUSLOGICTASKSTATE);
2124	} while (!ASMAtomicCmpXchgPtr(&pBusLogic->pTasksRedoHead, pTaskState, pTaskState->pRedoNext));
2125
2126	/* Suspend the VM if not done already. */
2127	if (!ASMAtomicXchgBool(&pBusLogic->fRedo, true))
2128	buslogicRedoSetWarning(pBusLogic, rcReq);
2129	}
2130	else
2131	{
2132	if (pTaskState->fBIOS)
2133	{
2134	rc = vboxscsiRequestFinished(&pBusLogic->VBoxSCSI, pSCSIRequest);
2135	AssertMsgRC(rc, ("Finishing BIOS SCSI request failed rc=%Rrc\n", rc));
2136	}
2137	else
2138	{
2139	buslogicDataBufferFree(pTaskState);
2140
2141	if (pTaskState->pbSenseBuffer)
2142	buslogicSenseBufferFree(pTaskState, (rcCompletion != SCSI_STATUS_OK));
2143
2144	buslogicSendIncomingMailbox(pBusLogic, pTaskState,
2145	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_CMD_COMPLETED,
2146	BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS_OPERATION_GOOD,
2147	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_WITHOUT_ERROR);
2148	}
2149
2150	/* Add task to the cache. */
2151	RTMemCacheFree(pBusLogic->hTaskCache, pTaskState);
2152	}
2153
2154	if (pBusLogicDevice->cOutstandingRequests == 0 && pBusLogic->fSignalIdle)
2155	PDMDevHlpAsyncNotificationCompleted(pBusLogic->pDevInsR3);
2156
2157	return VINF_SUCCESS;
2158	}
2159
2160	static DECLCALLBACK(int) buslogicQueryDeviceLocation(PPDMISCSIPORT pInterface, const char **ppcszController,
2161	uint32_t piInstance, uint32_t piLUN)
2162	{
2163	PBUSLOGICDEVICE pBusLogicDevice = PDMISCSIPORT_2_PBUSLOGICDEVICE(pInterface);
2164	PPDMDEVINS pDevIns = pBusLogicDevice->CTX_SUFF(pBusLogic)->CTX_SUFF(pDevIns);
2165
2166	AssertPtrReturn(ppcszController, VERR_INVALID_POINTER);
2167	AssertPtrReturn(piInstance, VERR_INVALID_POINTER);
2168	AssertPtrReturn(piLUN, VERR_INVALID_POINTER);
2169
2170	*ppcszController = pDevIns->pReg->szName;
2171	*piInstance = pDevIns->iInstance;
2172	*piLUN = pBusLogicDevice->iLUN;
2173
2174	return VINF_SUCCESS;
2175	}
2176
2177	static int buslogicDeviceSCSIRequestSetup(PBUSLOGIC pBusLogic, PBUSLOGICTASKSTATE pTaskState)
2178	{
2179	int rc = VINF_SUCCESS;
2180
2181	/* Fetch CCB. */
2182	RTGCPHYS GCPhysAddrCCB = (RTGCPHYS)pTaskState->MailboxGuest.u32PhysAddrCCB;
2183	PDMDevHlpPhysRead(pBusLogic->CTX_SUFF(pDevIns), GCPhysAddrCCB,
2184	&pTaskState->CommandControlBlockGuest, sizeof(CommandControlBlock));
2185
2186	PBUSLOGICDEVICE pTargetDevice = &pBusLogic->aDeviceStates[pTaskState->CommandControlBlockGuest.uTargetId];
2187	pTaskState->CTX_SUFF(pTargetDevice) = pTargetDevice;
2188
2189	#ifdef DEBUG
2190	buslogicDumpCCBInfo(&pTaskState->CommandControlBlockGuest);
2191	#endif
2192
2193	/* Alloc required buffers. */
2194	rc = buslogicDataBufferAlloc(pTaskState);
2195	AssertMsgRC(rc, ("Alloc failed rc=%Rrc\n", rc));
2196
2197	if (pTaskState->CommandControlBlockGuest.cbSenseData)
2198	{
2199	rc = buslogicSenseBufferAlloc(pTaskState);
2200	AssertMsgRC(rc, ("Mapping sense buffer failed rc=%Rrc\n", rc));
2201	}
2202
2203	/* Check if device is present on bus. If not return error immediately and don't process this further. */
2204	if (!pBusLogic->aDeviceStates[pTaskState->CommandControlBlockGuest.uTargetId].fPresent)
2205	{
2206	buslogicDataBufferFree(pTaskState);
2207
2208	if (pTaskState->pbSenseBuffer)
2209	buslogicSenseBufferFree(pTaskState, true);
2210
2211	buslogicSendIncomingMailbox(pBusLogic, pTaskState,
2212	BUSLOGIC_MAILBOX_INCOMING_ADAPTER_STATUS_SCSI_SELECTION_TIMEOUT,
2213	BUSLOGIC_MAILBOX_INCOMING_DEVICE_STATUS_OPERATION_GOOD,
2214	BUSLOGIC_MAILBOX_INCOMING_COMPLETION_WITH_ERROR);
2215
2216	RTMemCacheFree(pBusLogic->hTaskCache, pTaskState);
2217	}
2218	else
2219	{
2220	/* Setup SCSI request. */
2221	pTaskState->PDMScsiRequest.uLogicalUnit = pTaskState->CommandControlBlockGuest.uLogicalUnit;
2222
2223	if (pTaskState->CommandControlBlockGuest.uDataDirection == BUSLOGIC_CCB_DIRECTION_UNKNOWN)
2224	pTaskState->PDMScsiRequest.uDataDirection = PDMSCSIREQUESTTXDIR_UNKNOWN;
2225	else if (pTaskState->CommandControlBlockGuest.uDataDirection == BUSLOGIC_CCB_DIRECTION_IN)
2226	pTaskState->PDMScsiRequest.uDataDirection = PDMSCSIREQUESTTXDIR_FROM_DEVICE;
2227	else if (pTaskState->CommandControlBlockGuest.uDataDirection == BUSLOGIC_CCB_DIRECTION_OUT)
2228	pTaskState->PDMScsiRequest.uDataDirection = PDMSCSIREQUESTTXDIR_TO_DEVICE;
2229	else if (pTaskState->CommandControlBlockGuest.uDataDirection == BUSLOGIC_CCB_DIRECTION_NO_DATA)
2230	pTaskState->PDMScsiRequest.uDataDirection = PDMSCSIREQUESTTXDIR_NONE;
2231	else
2232	AssertMsgFailed(("Invalid data direction type %d\n", pTaskState->CommandControlBlockGuest.uDataDirection));
2233
2234	pTaskState->PDMScsiRequest.cbCDB = pTaskState->CommandControlBlockGuest.cbCDB;
2235	pTaskState->PDMScsiRequest.pbCDB = pTaskState->CommandControlBlockGuest.aCDB;
2236	if (pTaskState->DataSeg.cbSeg)
2237	{
2238	pTaskState->PDMScsiRequest.cbScatterGather = pTaskState->DataSeg.cbSeg;
2239	pTaskState->PDMScsiRequest.cScatterGatherEntries = 1;
2240	pTaskState->PDMScsiRequest.paScatterGatherHead = &pTaskState->DataSeg;
2241	}
2242	else
2243	{
2244	pTaskState->PDMScsiRequest.cbScatterGather = 0;
2245	pTaskState->PDMScsiRequest.cScatterGatherEntries = 0;
2246	pTaskState->PDMScsiRequest.paScatterGatherHead = NULL;
2247	}
2248	pTaskState->PDMScsiRequest.cbSenseBuffer = pTaskState->CommandControlBlockGuest.cbSenseData;
2249	pTaskState->PDMScsiRequest.pbSenseBuffer = pTaskState->pbSenseBuffer;
2250	pTaskState->PDMScsiRequest.pvUser = pTaskState;
2251
2252	ASMAtomicIncU32(&pTargetDevice->cOutstandingRequests);
2253	rc = pTargetDevice->pDrvSCSIConnector->pfnSCSIRequestSend(pTargetDevice->pDrvSCSIConnector, &pTaskState->PDMScsiRequest);
2254	AssertMsgRC(rc, ("Sending request to SCSI layer failed rc=%Rrc\n", rc));
2255	}
2256
2257	return rc;
2258	}
2259
2260	/**
2261	* Read mailbox from the guest and execute command.
2262	*
2263	* @returns VBox status code.
2264	* @param pBusLogic Pointer to the BusLogic instance data.
2265	*/
2266	static int buslogicProcessMailboxNext(PBUSLOGIC pBusLogic)
2267	{
2268	PBUSLOGICTASKSTATE pTaskState = NULL;
2269	RTGCPHYS GCPhysAddrMailboxCurrent;
2270	int rc;
2271
2272	rc = RTMemCacheAllocEx(pBusLogic->hTaskCache, (void **)&pTaskState);
2273	AssertMsgReturn(RT_SUCCESS(rc) && (pTaskState != NULL), ("Failed to get task state from cache\n"), rc);
2274
2275	pTaskState->fBIOS = false;
2276
2277	if (!pBusLogic->fStrictRoundRobinMode)
2278	{
2279	/* Search for a filled mailbox. */
2280	do
2281	{
2282	/* Fetch mailbox from guest memory. */
2283	GCPhysAddrMailboxCurrent = pBusLogic->GCPhysAddrMailboxOutgoingBase + (pBusLogic->uMailboxOutgoingPositionCurrent * sizeof(Mailbox));
2284
2285	PDMDevHlpPhysRead(pBusLogic->CTX_SUFF(pDevIns), GCPhysAddrMailboxCurrent,
2286	&pTaskState->MailboxGuest, sizeof(Mailbox));
2287
2288	pBusLogic->uMailboxOutgoingPositionCurrent++;
2289
2290	/* Check if we reached the end and start from the beginning if so. */
2291	if (pBusLogic->uMailboxOutgoingPositionCurrent >= pBusLogic->cMailbox)
2292	pBusLogic->uMailboxOutgoingPositionCurrent = 0;
2293	} while (pTaskState->MailboxGuest.u.out.uActionCode == BUSLOGIC_MAILBOX_OUTGOING_ACTION_FREE);
2294	}
2295	else
2296	{
2297	/* Fetch mailbox from guest memory. */
2298	GCPhysAddrMailboxCurrent = pBusLogic->GCPhysAddrMailboxOutgoingBase + (pBusLogic->uMailboxOutgoingPositionCurrent * sizeof(Mailbox));
2299
2300	PDMDevHlpPhysRead(pBusLogic->CTX_SUFF(pDevIns), GCPhysAddrMailboxCurrent,
2301	&pTaskState->MailboxGuest, sizeof(Mailbox));
2302	}
2303
2304	#ifdef DEBUG
2305	buslogicDumpMailboxInfo(&pTaskState->MailboxGuest, true);
2306	#endif
2307
2308	if (pTaskState->MailboxGuest.u.out.uActionCode == BUSLOGIC_MAILBOX_OUTGOING_ACTION_START_COMMAND)
2309	rc = buslogicDeviceSCSIRequestSetup(pBusLogic, pTaskState);
2310	else if (pTaskState->MailboxGuest.u.out.uActionCode == BUSLOGIC_MAILBOX_OUTGOING_ACTION_ABORT_COMMAND)
2311	{
2312	AssertMsgFailed(("Not implemented yet\n"));
2313	}
2314	else
2315	AssertMsgFailed(("Invalid outgoing mailbox action code %u\n", pTaskState->MailboxGuest.u.out.uActionCode));
2316
2317	AssertRC(rc);
2318
2319	/* We got the mailbox, mark it as free in the guest. */
2320	pTaskState->MailboxGuest.u.out.uActionCode = BUSLOGIC_MAILBOX_OUTGOING_ACTION_FREE;
2321	PDMDevHlpPhysWrite(pBusLogic->CTX_SUFF(pDevIns), GCPhysAddrMailboxCurrent, &pTaskState->MailboxGuest, sizeof(Mailbox));
2322
2323	if (pBusLogic->fStrictRoundRobinMode)
2324	{
2325	pBusLogic->uMailboxOutgoingPositionCurrent++;
2326
2327	/* Check if we reached the end and start from the beginning if so. */
2328	if (pBusLogic->uMailboxOutgoingPositionCurrent >= pBusLogic->cMailbox)
2329	pBusLogic->uMailboxOutgoingPositionCurrent = 0;
2330	}
2331
2332	return rc;
2333	}
2334
2335	/**
2336	* Transmit queue consumer
2337	* Queue a new async task.
2338	*
2339	* @returns Success indicator.
2340	* If false the item will not be removed and the flushing will stop.
2341	* @param pDevIns The device instance.
2342	* @param pItem The item to consume. Upon return this item will be freed.
2343	*/
2344	static DECLCALLBACK(bool) buslogicNotifyQueueConsumer(PPDMDEVINS pDevIns, PPDMQUEUEITEMCORE pItem)
2345	{
2346	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2347	uint32_t cMailboxesReady = 0;
2348
2349	/* Reset notification send flag now. */
2350	Assert(pBusLogic->fNotificationSend);
2351	ASMAtomicXchgBool(&pBusLogic->fNotificationSend, false);
2352
2353	/*
2354	* It is possible that there is a notification send but that there is no mailbox ready
2355	* in the SMP case. Just do nothing.
2356	*/
2357	cMailboxesReady = ASMAtomicXchgU32(&pBusLogic->cMailboxesReady, 0);
2358	if (!cMailboxesReady)
2359	return true;
2360
2361	/* Process mailboxes. */
2362	do
2363	{
2364	int rc;
2365
2366	rc = buslogicProcessMailboxNext(pBusLogic);
2367	AssertMsgRC(rc, ("Processing mailbox failed rc=%Rrc\n", rc));
2368	} while (--cMailboxesReady > 0);
2369
2370	return true;
2371	}
2372
2373	/**
2374	* Kicks the controller to process pending tasks after the VM was resumed
2375	* or loaded from a saved state.
2376	*
2377	* @returns nothing.
2378	* @param pThis The LsiLogic device instance.
2379	*/
2380	static void buslogicKick(PBUSLOGIC pThis)
2381	{
2382	if (pThis->fRedo)
2383	{
2384	pThis->fRedo = false;
2385	if (pThis->VBoxSCSI.fBusy)
2386	{
2387
2388	/* The BIOS had a request active when we got suspended. Resume it. */
2389	int rc = buslogicPrepareBIOSSCSIRequest(pThis);
2390	AssertRC(rc);
2391	}
2392	else
2393	{
2394	/* Queue all pending tasks again. */
2395	PBUSLOGICTASKSTATE pTaskState = pThis->pTasksRedoHead;
2396
2397	pThis->pTasksRedoHead = NULL;
2398
2399	while (pTaskState)
2400	{
2401	PBUSLOGICTASKSTATE pCur = pTaskState;
2402
2403	int rc = buslogicDeviceSCSIRequestSetup(pThis, pCur);
2404	AssertRC(rc);
2405
2406	pTaskState = pTaskState->pRedoNext;
2407	}
2408	}
2409	}
2410	}
2411
2412	static DECLCALLBACK(int) buslogicLiveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uPass)
2413	{
2414	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2415
2416	/* Save the device config. */
2417	for (unsigned i = 0; i < RT_ELEMENTS(pThis->aDeviceStates); i++)
2418	SSMR3PutBool(pSSM, pThis->aDeviceStates[i].fPresent);
2419
2420	return VINF_SSM_DONT_CALL_AGAIN;
2421	}
2422
2423	static DECLCALLBACK(int) buslogicSaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
2424	{
2425	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2426
2427	/* Every device first. */
2428	for (unsigned i = 0; i < RT_ELEMENTS(pBusLogic->aDeviceStates); i++)
2429	{
2430	PBUSLOGICDEVICE pDevice = &pBusLogic->aDeviceStates[i];
2431
2432	AssertMsg(!pDevice->cOutstandingRequests,
2433	("There are still outstanding requests on this device\n"));
2434	SSMR3PutBool(pSSM, pDevice->fPresent);
2435	SSMR3PutU32(pSSM, pDevice->cOutstandingRequests);
2436	}
2437	/* Now the main device state. */
2438	SSMR3PutU8 (pSSM, pBusLogic->regStatus);
2439	SSMR3PutU8 (pSSM, pBusLogic->regInterrupt);
2440	SSMR3PutU8 (pSSM, pBusLogic->regGeometry);
2441	SSMR3PutMem (pSSM, &pBusLogic->LocalRam, sizeof(pBusLogic->LocalRam));
2442	SSMR3PutU8 (pSSM, pBusLogic->uOperationCode);
2443	SSMR3PutMem (pSSM, &pBusLogic->aCommandBuffer, sizeof(pBusLogic->aCommandBuffer));
2444	SSMR3PutU8 (pSSM, pBusLogic->iParameter);
2445	SSMR3PutU8 (pSSM, pBusLogic->cbCommandParametersLeft);
2446	SSMR3PutBool (pSSM, pBusLogic->fUseLocalRam);
2447	SSMR3PutMem (pSSM, pBusLogic->aReplyBuffer, sizeof(pBusLogic->aReplyBuffer));
2448	SSMR3PutU8 (pSSM, pBusLogic->iReply);
2449	SSMR3PutU8 (pSSM, pBusLogic->cbReplyParametersLeft);
2450	SSMR3PutBool (pSSM, pBusLogic->fIRQEnabled);
2451	SSMR3PutBool (pSSM, pBusLogic->fISAEnabled);
2452	SSMR3PutU32 (pSSM, pBusLogic->cMailbox);
2453	SSMR3PutGCPhys(pSSM, pBusLogic->GCPhysAddrMailboxOutgoingBase);
2454	SSMR3PutU32 (pSSM, pBusLogic->uMailboxOutgoingPositionCurrent);
2455	SSMR3PutU32 (pSSM, pBusLogic->cMailboxesReady);
2456	SSMR3PutBool (pSSM, pBusLogic->fNotificationSend);
2457	SSMR3PutGCPhys(pSSM, pBusLogic->GCPhysAddrMailboxIncomingBase);
2458	SSMR3PutU32 (pSSM, pBusLogic->uMailboxIncomingPositionCurrent);
2459	SSMR3PutBool (pSSM, pBusLogic->fStrictRoundRobinMode);
2460	SSMR3PutBool (pSSM, pBusLogic->fExtendedLunCCBFormat);
2461	/* Now the data for the BIOS interface. */
2462	SSMR3PutU8 (pSSM, pBusLogic->VBoxSCSI.regIdentify);
2463	SSMR3PutU8 (pSSM, pBusLogic->VBoxSCSI.uTargetDevice);
2464	SSMR3PutU8 (pSSM, pBusLogic->VBoxSCSI.uTxDir);
2465	SSMR3PutU8 (pSSM, pBusLogic->VBoxSCSI.cbCDB);
2466	SSMR3PutMem (pSSM, pBusLogic->VBoxSCSI.aCDB, sizeof(pBusLogic->VBoxSCSI.aCDB));
2467	SSMR3PutU8 (pSSM, pBusLogic->VBoxSCSI.iCDB);
2468	SSMR3PutU32 (pSSM, pBusLogic->VBoxSCSI.cbBuf);
2469	SSMR3PutU32 (pSSM, pBusLogic->VBoxSCSI.iBuf);
2470	SSMR3PutBool (pSSM, pBusLogic->VBoxSCSI.fBusy);
2471	SSMR3PutU8 (pSSM, pBusLogic->VBoxSCSI.enmState);
2472	if (pBusLogic->VBoxSCSI.cbBuf)
2473	SSMR3PutMem(pSSM, pBusLogic->VBoxSCSI.pBuf, pBusLogic->VBoxSCSI.cbBuf);
2474
2475	/*
2476	* Save the physical addresses of the command control blocks of still pending tasks.
2477	* They are processed again on resume.
2478	*
2479	* The number of pending tasks needs to be determined first.
2480	*/
2481	uint32_t cTasks = 0;
2482
2483	PBUSLOGICTASKSTATE pTaskState = pBusLogic->pTasksRedoHead;
2484	if (pBusLogic->fRedo)
2485	{
2486	while (pTaskState)
2487	{
2488	cTasks++;
2489	pTaskState = pTaskState->pRedoNext;
2490	}
2491	}
2492	SSMR3PutU32(pSSM, cTasks);
2493
2494	/* Write the address of every task now. */
2495	pTaskState = pBusLogic->pTasksRedoHead;
2496	while (pTaskState)
2497	{
2498	SSMR3PutU32(pSSM, pTaskState->MailboxGuest.u32PhysAddrCCB);
2499	pTaskState = pTaskState->pRedoNext;
2500	}
2501
2502	return SSMR3PutU32(pSSM, ~0);
2503	}
2504
2505	static DECLCALLBACK(int) buslogicLoadDone(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
2506	{
2507	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2508
2509	buslogicKick(pThis);
2510	return VINF_SUCCESS;
2511	}
2512
2513	static DECLCALLBACK(int) buslogicLoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
2514	{
2515	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2516	int rc = VINF_SUCCESS;
2517
2518	/* We support saved states only from this and older versions. */
2519	if (uVersion > BUSLOGIC_SAVED_STATE_MINOR_VERSION)
2520	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
2521
2522	/* Every device first. */
2523	for (unsigned i = 0; i < RT_ELEMENTS(pBusLogic->aDeviceStates); i++)
2524	{
2525	PBUSLOGICDEVICE pDevice = &pBusLogic->aDeviceStates[i];
2526
2527	AssertMsg(!pDevice->cOutstandingRequests,
2528	("There are still outstanding requests on this device\n"));
2529	bool fPresent;
2530	rc = SSMR3GetBool(pSSM, &fPresent);
2531	AssertRCReturn(rc, rc);
2532	if (pDevice->fPresent != fPresent)
2533	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Target %u config mismatch: config=%RTbool state=%RTbool"), i, pDevice->fPresent, fPresent);
2534
2535	if (uPass == SSM_PASS_FINAL)
2536	SSMR3GetU32(pSSM, (uint32_t *)&pDevice->cOutstandingRequests);
2537	}
2538
2539	if (uPass != SSM_PASS_FINAL)
2540	return VINF_SUCCESS;
2541
2542	/* Now the main device state. */
2543	SSMR3GetU8 (pSSM, (uint8_t *)&pBusLogic->regStatus);
2544	SSMR3GetU8 (pSSM, (uint8_t *)&pBusLogic->regInterrupt);
2545	SSMR3GetU8 (pSSM, (uint8_t *)&pBusLogic->regGeometry);
2546	SSMR3GetMem (pSSM, &pBusLogic->LocalRam, sizeof(pBusLogic->LocalRam));
2547	SSMR3GetU8 (pSSM, &pBusLogic->uOperationCode);
2548	SSMR3GetMem (pSSM, &pBusLogic->aCommandBuffer, sizeof(pBusLogic->aCommandBuffer));
2549	SSMR3GetU8 (pSSM, &pBusLogic->iParameter);
2550	SSMR3GetU8 (pSSM, &pBusLogic->cbCommandParametersLeft);
2551	SSMR3GetBool (pSSM, &pBusLogic->fUseLocalRam);
2552	SSMR3GetMem (pSSM, pBusLogic->aReplyBuffer, sizeof(pBusLogic->aReplyBuffer));
2553	SSMR3GetU8 (pSSM, &pBusLogic->iReply);
2554	SSMR3GetU8 (pSSM, &pBusLogic->cbReplyParametersLeft);
2555	SSMR3GetBool (pSSM, &pBusLogic->fIRQEnabled);
2556	SSMR3GetBool (pSSM, &pBusLogic->fISAEnabled);
2557	SSMR3GetU32 (pSSM, &pBusLogic->cMailbox);
2558	SSMR3GetGCPhys(pSSM, &pBusLogic->GCPhysAddrMailboxOutgoingBase);
2559	SSMR3GetU32 (pSSM, &pBusLogic->uMailboxOutgoingPositionCurrent);
2560	SSMR3GetU32 (pSSM, (uint32_t *)&pBusLogic->cMailboxesReady);
2561	SSMR3GetBool (pSSM, (bool *)&pBusLogic->fNotificationSend);
2562	SSMR3GetGCPhys(pSSM, &pBusLogic->GCPhysAddrMailboxIncomingBase);
2563	SSMR3GetU32 (pSSM, &pBusLogic->uMailboxIncomingPositionCurrent);
2564	SSMR3GetBool (pSSM, &pBusLogic->fStrictRoundRobinMode);
2565	SSMR3GetBool (pSSM, &pBusLogic->fExtendedLunCCBFormat);
2566	/* Now the data for the BIOS interface. */
2567	SSMR3GetU8 (pSSM, &pBusLogic->VBoxSCSI.regIdentify);
2568	SSMR3GetU8 (pSSM, &pBusLogic->VBoxSCSI.uTargetDevice);
2569	SSMR3GetU8 (pSSM, &pBusLogic->VBoxSCSI.uTxDir);
2570	SSMR3GetU8 (pSSM, &pBusLogic->VBoxSCSI.cbCDB);
2571	SSMR3GetMem (pSSM, pBusLogic->VBoxSCSI.aCDB, sizeof(pBusLogic->VBoxSCSI.aCDB));
2572	SSMR3GetU8 (pSSM, &pBusLogic->VBoxSCSI.iCDB);
2573	SSMR3GetU32 (pSSM, &pBusLogic->VBoxSCSI.cbBuf);
2574	SSMR3GetU32 (pSSM, &pBusLogic->VBoxSCSI.iBuf);
2575	SSMR3GetBool(pSSM, (bool *)&pBusLogic->VBoxSCSI.fBusy);
2576	SSMR3GetU8 (pSSM, (uint8_t *)&pBusLogic->VBoxSCSI.enmState);
2577	if (pBusLogic->VBoxSCSI.cbBuf)
2578	{
2579	pBusLogic->VBoxSCSI.pBuf = (uint8_t *)RTMemAllocZ(pBusLogic->VBoxSCSI.cbBuf);
2580	if (!pBusLogic->VBoxSCSI.pBuf)
2581	{
2582	LogRel(("BusLogic: Out of memory during restore.\n"));
2583	return PDMDEV_SET_ERROR(pDevIns, VERR_NO_MEMORY,
2584	N_("BusLogic: Out of memory during restore\n"));
2585	}
2586	SSMR3GetMem(pSSM, pBusLogic->VBoxSCSI.pBuf, pBusLogic->VBoxSCSI.cbBuf);
2587	}
2588
2589	if (pBusLogic->VBoxSCSI.fBusy)
2590	pBusLogic->fRedo = true;
2591
2592	if (uVersion > BUSLOGIC_SAVED_STATE_MINOR_PRE_ERROR_HANDLING)
2593	{
2594	/* Check if there are pending tasks saved. */
2595	uint32_t cTasks = 0;
2596
2597	SSMR3GetU32(pSSM, &cTasks);
2598
2599	if (cTasks)
2600	pBusLogic->fRedo = true;
2601
2602	for (uint32_t i = 0; i < cTasks; i++)
2603	{
2604	PBUSLOGICTASKSTATE pTaskState = (PBUSLOGICTASKSTATE)RTMemCacheAlloc(pBusLogic->hTaskCache);
2605	if (!pTaskState)
2606	{
2607	rc = VERR_NO_MEMORY;
2608	break;
2609	}
2610
2611	rc = SSMR3GetU32(pSSM, &pTaskState->MailboxGuest.u32PhysAddrCCB);
2612	if (RT_FAILURE(rc))
2613	{
2614	RTMemCacheFree(pBusLogic->hTaskCache, pTaskState);
2615	break;
2616	}
2617
2618	/* Link into the list. */
2619	pTaskState->pRedoNext = pBusLogic->pTasksRedoHead;
2620	pBusLogic->pTasksRedoHead = pTaskState;
2621	}
2622	}
2623
2624	if (RT_SUCCESS(rc))
2625	{
2626	uint32_t u32;
2627	rc = SSMR3GetU32(pSSM, &u32);
2628	if (RT_SUCCESS(rc))
2629	AssertMsgReturn(u32 == ~0U, ("%#x\n", u32), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2630	}
2631
2632	return rc;
2633	}
2634
2635	/**
2636	* Gets the pointer to the status LED of a device - called from the SCSi driver.
2637	*
2638	* @returns VBox status code.
2639	* @param pInterface Pointer to the interface structure containing the called function pointer.
2640	* @param iLUN The unit which status LED we desire. Always 0 here as the driver
2641	* doesn't know about other LUN's.
2642	* @param ppLed Where to store the LED pointer.
2643	*/
2644	static DECLCALLBACK(int) buslogicDeviceQueryStatusLed(PPDMILEDPORTS pInterface, unsigned iLUN, PPDMLED *ppLed)
2645	{
2646	PBUSLOGICDEVICE pDevice = PDMILEDPORTS_2_PBUSLOGICDEVICE(pInterface);
2647	if (iLUN == 0)
2648	{
2649	*ppLed = &pDevice->Led;
2650	Assert((*ppLed)->u32Magic == PDMLED_MAGIC);
2651	return VINF_SUCCESS;
2652	}
2653	return VERR_PDM_LUN_NOT_FOUND;
2654	}
2655
2656	/**
2657	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
2658	*/
2659	static DECLCALLBACK(void ) buslogicDeviceQueryInterface(PPDMIBASE pInterface, const char pszIID)
2660	{
2661	PBUSLOGICDEVICE pDevice = PDMIBASE_2_PBUSLOGICDEVICE(pInterface);
2662	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDevice->IBase);
2663	PDMIBASE_RETURN_INTERFACE(pszIID, PDMISCSIPORT, &pDevice->ISCSIPort);
2664	PDMIBASE_RETURN_INTERFACE(pszIID, PDMILEDPORTS, &pDevice->ILed);
2665	return NULL;
2666	}
2667
2668	/**
2669	* Gets the pointer to the status LED of a unit.
2670	*
2671	* @returns VBox status code.
2672	* @param pInterface Pointer to the interface structure containing the called function pointer.
2673	* @param iLUN The unit which status LED we desire.
2674	* @param ppLed Where to store the LED pointer.
2675	*/
2676	static DECLCALLBACK(int) buslogicStatusQueryStatusLed(PPDMILEDPORTS pInterface, unsigned iLUN, PPDMLED *ppLed)
2677	{
2678	PBUSLOGIC pBusLogic = PDMILEDPORTS_2_PBUSLOGIC(pInterface);
2679	if (iLUN < BUSLOGIC_MAX_DEVICES)
2680	{
2681	*ppLed = &pBusLogic->aDeviceStates[iLUN].Led;
2682	Assert((*ppLed)->u32Magic == PDMLED_MAGIC);
2683	return VINF_SUCCESS;
2684	}
2685	return VERR_PDM_LUN_NOT_FOUND;
2686	}
2687
2688	/**
2689	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
2690	*/
2691	static DECLCALLBACK(void ) buslogicStatusQueryInterface(PPDMIBASE pInterface, const char pszIID)
2692	{
2693	PBUSLOGIC pThis = PDMIBASE_2_PBUSLOGIC(pInterface);
2694	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->IBase);
2695	PDMIBASE_RETURN_INTERFACE(pszIID, PDMILEDPORTS, &pThis->ILeds);
2696	return NULL;
2697	}
2698
2699	/* -=-=-=-=- Helper -=-=-=-=- */
2700
2701	/**
2702	* Checks if all asynchronous I/O is finished.
2703	*
2704	* Used by lsilogicReset, lsilogicSuspend and lsilogicPowerOff.
2705	*
2706	* @returns true if quiesced, false if busy.
2707	* @param pDevIns The device instance.
2708	*/
2709	static bool buslogicR3AllAsyncIOIsFinished(PPDMDEVINS pDevIns)
2710	{
2711	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2712
2713	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aDeviceStates); i++)
2714	{
2715	PBUSLOGICDEVICE pThisDevice = &pThis->aDeviceStates[i];
2716	if (pThisDevice->pDrvBase)
2717	{
2718	if (pThisDevice->cOutstandingRequests != 0)
2719	return false;
2720	}
2721	}
2722
2723	return true;
2724	}
2725
2726	/**
2727	* Callback employed by lsilogicR3Suspend and lsilogicR3PowerOff..
2728	*
2729	* @returns true if we've quiesced, false if we're still working.
2730	* @param pDevIns The device instance.
2731	*/
2732	static DECLCALLBACK(bool) buslogicR3IsAsyncSuspendOrPowerOffDone(PPDMDEVINS pDevIns)
2733	{
2734	if (!buslogicR3AllAsyncIOIsFinished(pDevIns))
2735	return false;
2736
2737	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2738	ASMAtomicWriteBool(&pThis->fSignalIdle, false);
2739	return true;
2740	}
2741
2742	/**
2743	* Common worker for ahciR3Suspend and ahciR3PowerOff.
2744	*/
2745	static void buslogicR3SuspendOrPowerOff(PPDMDEVINS pDevIns, bool fPowerOff)
2746	{
2747	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2748
2749	ASMAtomicWriteBool(&pThis->fSignalIdle, true);
2750	if (!buslogicR3AllAsyncIOIsFinished(pDevIns))
2751	PDMDevHlpSetAsyncNotification(pDevIns, buslogicR3IsAsyncSuspendOrPowerOffDone);
2752	else
2753	{
2754	ASMAtomicWriteBool(&pThis->fSignalIdle, false);
2755
2756	AssertMsg(!pThis->fNotificationSend, ("The PDM Queue should be empty at this point\n"));
2757
2758	if (pThis->fRedo)
2759	{
2760	if (fPowerOff)
2761	{
2762	/* Free tasks which would have been queued again on resume. */
2763	PBUSLOGICTASKSTATE pTaskState = pThis->pTasksRedoHead;
2764
2765	pThis->pTasksRedoHead = NULL;
2766
2767	while (pTaskState)
2768	{
2769	PBUSLOGICTASKSTATE pFree;
2770
2771	pFree = pTaskState;
2772	pTaskState = pTaskState->pRedoNext;
2773
2774	RTMemCacheFree(pThis->hTaskCache, pFree);
2775	}
2776	pThis->fRedo = false;
2777	}
2778	else if (pThis->VBoxSCSI.fBusy)
2779	{
2780	/* Destroy the task because the BIOS interface has all necessary information. */
2781	Assert(pThis->pTasksRedoHead->fBIOS);
2782	Assert(!pThis->pTasksRedoHead->pRedoNext);
2783
2784	RTMemCacheFree(pThis->hTaskCache, pThis->pTasksRedoHead);
2785	pThis->pTasksRedoHead = NULL;
2786	}
2787	}
2788	}
2789	}
2790
2791	/**
2792	* Suspend notification.
2793	*
2794	* @param pDevIns The device instance data.
2795	*/
2796	static DECLCALLBACK(void) buslogicSuspend(PPDMDEVINS pDevIns)
2797	{
2798	Log(("buslogicSuspend\n"));
2799	buslogicR3SuspendOrPowerOff(pDevIns, false /* fPoweroff */);
2800	}
2801
2802	/**
2803	* Resume notification.
2804	*
2805	* @param pDevIns The device instance data.
2806	*/
2807	static DECLCALLBACK(void) buslogicResume(PPDMDEVINS pDevIns)
2808	{
2809	Log(("buslogicResume\n"));
2810	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2811	buslogicKick(pThis);
2812	}
2813
2814
2815	/**
2816	* Detach notification.
2817	*
2818	* One harddisk at one port has been unplugged.
2819	* The VM is suspended at this point.
2820	*
2821	* @param pDevIns The device instance.
2822	* @param iLUN The logical unit which is being detached.
2823	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
2824	*/
2825	static DECLCALLBACK(void) buslogicDetach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2826	{
2827	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2828	PBUSLOGICDEVICE pDevice = &pThis->aDeviceStates[iLUN];
2829
2830	Log(("%s:\n", __FUNCTION__));
2831
2832	AssertMsg(fFlags & PDM_TACH_FLAGS_NOT_HOT_PLUG,
2833	("BusLogic: Device does not support hotplugging\n"));
2834
2835	/*
2836	* Zero some important members.
2837	*/
2838	pDevice->pDrvBase = NULL;
2839	pDevice->fPresent = false;
2840	pDevice->pDrvSCSIConnector = NULL;
2841	}
2842
2843	/**
2844	* Attach command.
2845	*
2846	* This is called when we change block driver.
2847	*
2848	* @returns VBox status code.
2849	* @param pDevIns The device instance.
2850	* @param iLUN The logical unit which is being detached.
2851	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
2852	*/
2853	static DECLCALLBACK(int) buslogicAttach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2854	{
2855	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2856	PBUSLOGICDEVICE pDevice = &pThis->aDeviceStates[iLUN];
2857	int rc;
2858
2859	AssertMsgReturn(fFlags & PDM_TACH_FLAGS_NOT_HOT_PLUG,
2860	("BusLogic: Device does not support hotplugging\n"),
2861	VERR_INVALID_PARAMETER);
2862
2863	/* the usual paranoia */
2864	AssertRelease(!pDevice->pDrvBase);
2865	AssertRelease(!pDevice->pDrvSCSIConnector);
2866	Assert(pDevice->iLUN == iLUN);
2867
2868	/*
2869	* Try attach the block device and get the interfaces,
2870	* required as well as optional.
2871	*/
2872	rc = PDMDevHlpDriverAttach(pDevIns, pDevice->iLUN, &pDevice->IBase, &pDevice->pDrvBase, NULL);
2873	if (RT_SUCCESS(rc))
2874	{
2875	/* Get SCSI connector interface. */
2876	pDevice->pDrvSCSIConnector = PDMIBASE_QUERY_INTERFACE(pDevice->pDrvBase, PDMISCSICONNECTOR);
2877	AssertMsgReturn(pDevice->pDrvSCSIConnector, ("Missing SCSI interface below\n"), VERR_PDM_MISSING_INTERFACE);
2878	pDevice->fPresent = true;
2879	}
2880	else
2881	AssertMsgFailed(("Failed to attach LUN#%d. rc=%Rrc\n", pDevice->iLUN, rc));
2882
2883	if (RT_FAILURE(rc))
2884	{
2885	pDevice->pDrvBase = NULL;
2886	pDevice->pDrvSCSIConnector = NULL;
2887	}
2888	return rc;
2889	}
2890
2891	/**
2892	* Callback employed by buslogicR3Reset.
2893	*
2894	* @returns true if we've quiesced, false if we're still working.
2895	* @param pDevIns The device instance.
2896	*/
2897	static DECLCALLBACK(bool) buslogicR3IsAsyncResetDone(PPDMDEVINS pDevIns)
2898	{
2899	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2900
2901	if (!buslogicR3AllAsyncIOIsFinished(pDevIns))
2902	return false;
2903	ASMAtomicWriteBool(&pThis->fSignalIdle, false);
2904
2905	buslogicHwReset(pThis);
2906	return true;
2907	}
2908
2909	/**
2910	* @copydoc FNPDMDEVRESET
2911	*/
2912	static DECLCALLBACK(void) buslogicReset(PPDMDEVINS pDevIns)
2913	{
2914	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2915
2916	ASMAtomicWriteBool(&pThis->fSignalIdle, true);
2917	if (!buslogicR3AllAsyncIOIsFinished(pDevIns))
2918	PDMDevHlpSetAsyncNotification(pDevIns, buslogicR3IsAsyncResetDone);
2919	else
2920	{
2921	ASMAtomicWriteBool(&pThis->fSignalIdle, false);
2922	buslogicHwReset(pThis);
2923	}
2924	}
2925
2926	static DECLCALLBACK(void) buslogicRelocate(PPDMDEVINS pDevIns, RTGCINTPTR offDelta)
2927	{
2928	uint32_t i;
2929	PBUSLOGIC pBusLogic = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2930
2931	pBusLogic->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
2932	pBusLogic->pNotifierQueueRC = PDMQueueRCPtr(pBusLogic->pNotifierQueueR3);
2933
2934	for (i = 0; i < BUSLOGIC_MAX_DEVICES; i++)
2935	{
2936	PBUSLOGICDEVICE pDevice = &pBusLogic->aDeviceStates[i];
2937
2938	pDevice->pBusLogicRC = PDMINS_2_DATA_RCPTR(pDevIns);
2939	}
2940
2941	}
2942
2943	/**
2944	* Poweroff notification.
2945	*
2946	* @param pDevIns Pointer to the device instance
2947	*/
2948	static DECLCALLBACK(void) buslogicPowerOff(PPDMDEVINS pDevIns)
2949	{
2950	Log(("buslogicPowerOff\n"));
2951	buslogicR3SuspendOrPowerOff(pDevIns, true /* fPoweroff */);
2952	}
2953
2954	/**
2955	* Destroy a driver instance.
2956	*
2957	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
2958	* resources can be freed correctly.
2959	*
2960	* @param pDevIns The device instance data.
2961	*/
2962	static DECLCALLBACK(int) buslogicDestruct(PPDMDEVINS pDevIns)
2963	{
2964	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
2965	PDMDEV_CHECK_VERSIONS_RETURN_QUIET(pDevIns);
2966
2967	PDMR3CritSectDelete(&pThis->CritSectIntr);
2968
2969	/*
2970	* Free all tasks which are still hanging around
2971	* (Power off after the VM was suspended).
2972	*/
2973	if (pThis->fRedo)
2974	{
2975	/* Free tasks which would have been queued again on resume. */
2976	PBUSLOGICTASKSTATE pTaskState = pThis->pTasksRedoHead;
2977
2978	pThis->pTasksRedoHead = NULL;
2979
2980	while (pTaskState)
2981	{
2982	PBUSLOGICTASKSTATE pFree;
2983
2984	pFree = pTaskState;
2985	pTaskState = pTaskState->pRedoNext;
2986
2987	RTMemCacheFree(pThis->hTaskCache, pFree);
2988	}
2989	pThis->fRedo = false;
2990	}
2991
2992	int rc = RTMemCacheDestroy(pThis->hTaskCache);
2993	AssertMsgRC(rc, ("Destroying task cache failed rc=%Rrc\n", rc));
2994
2995	return rc;
2996	}
2997
2998	/**
2999	* @interface_method_impl{PDMDEVREG,pfnConstruct}
3000	*/
3001	static DECLCALLBACK(int) buslogicConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
3002	{
3003	PBUSLOGIC pThis = PDMINS_2_DATA(pDevIns, PBUSLOGIC);
3004	int rc = VINF_SUCCESS;
3005	bool fBootable = true;
3006	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
3007
3008	/*
3009	* Validate and read configuration.
3010	*/
3011	if (!CFGMR3AreValuesValid(pCfg,
3012	"GCEnabled\0"
3013	"R0Enabled\0"
3014	"Bootable\0"))
3015	return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
3016	N_("BusLogic configuration error: unknown option specified"));
3017
3018	rc = CFGMR3QueryBoolDef(pCfg, "GCEnabled", &pThis->fGCEnabled, true);
3019	if (RT_FAILURE(rc))
3020	return PDMDEV_SET_ERROR(pDevIns, rc,
3021	N_("BusLogic configuration error: failed to read GCEnabled as boolean"));
3022	Log(("%s: fGCEnabled=%d\n", __FUNCTION__, pThis->fGCEnabled));
3023
3024	rc = CFGMR3QueryBoolDef(pCfg, "R0Enabled", &pThis->fR0Enabled, true);
3025	if (RT_FAILURE(rc))
3026	return PDMDEV_SET_ERROR(pDevIns, rc,
3027	N_("BusLogic configuration error: failed to read R0Enabled as boolean"));
3028	Log(("%s: fR0Enabled=%d\n", __FUNCTION__, pThis->fR0Enabled));
3029	rc = CFGMR3QueryBoolDef(pCfg, "Bootable", &fBootable, true);
3030	if (RT_FAILURE(rc))
3031	return PDMDEV_SET_ERROR(pDevIns, rc,
3032	N_("BusLogic configuration error: failed to read Bootable as boolean"));
3033	Log(("%s: fBootable=%RTbool\n", __FUNCTION__, fBootable));
3034
3035	pThis->pDevInsR3 = pDevIns;
3036	pThis->pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
3037	pThis->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
3038	pThis->IBase.pfnQueryInterface = buslogicStatusQueryInterface;
3039	pThis->ILeds.pfnQueryStatusLed = buslogicStatusQueryStatusLed;
3040
3041	PCIDevSetVendorId (&pThis->dev, 0x104b); /* BusLogic */
3042	PCIDevSetDeviceId (&pThis->dev, 0x1040); /* BT-958 */
3043	PCIDevSetCommand (&pThis->dev, 0x0003);
3044	PCIDevSetRevisionId (&pThis->dev, 0x01);
3045	PCIDevSetClassProg (&pThis->dev, 0x00); /* SCSI */
3046	PCIDevSetClassSub (&pThis->dev, 0x00); /* SCSI */
3047	PCIDevSetClassBase (&pThis->dev, 0x01); /* Mass storage */
3048	PCIDevSetBaseAddress (&pThis->dev, 0, true /IO/, false /Pref/, false /64-bit/, 0x00000000);
3049	PCIDevSetBaseAddress (&pThis->dev, 1, false /IO/, false /Pref/, false /64-bit/, 0x00000000);
3050	PCIDevSetSubSystemVendorId(&pThis->dev, 0x104b);
3051	PCIDevSetSubSystemId (&pThis->dev, 0x1040);
3052	PCIDevSetInterruptLine (&pThis->dev, 0x00);
3053	PCIDevSetInterruptPin (&pThis->dev, 0x01);
3054
3055	/*
3056	* Register the PCI device, it's I/O regions.
3057	*/
3058	rc = PDMDevHlpPCIRegister (pDevIns, &pThis->dev);
3059	if (RT_FAILURE(rc))
3060	return rc;
3061
3062	rc = PDMDevHlpPCIIORegionRegister(pDevIns, 0, 32, PCI_ADDRESS_SPACE_IO, buslogicMMIOMap);
3063	if (RT_FAILURE(rc))
3064	return rc;
3065
3066	rc = PDMDevHlpPCIIORegionRegister(pDevIns, 1, 32, PCI_ADDRESS_SPACE_MEM, buslogicMMIOMap);
3067	if (RT_FAILURE(rc))
3068	return rc;
3069
3070	if (fBootable)
3071	{
3072	/* Register I/O port space in ISA region for BIOS access. */
3073	rc = PDMDevHlpIOPortRegister(pDevIns, BUSLOGIC_ISA_IO_PORT, 3, NULL,
3074	buslogicIsaIOPortWrite, buslogicIsaIOPortRead,
3075	buslogicIsaIOPortWriteStr, buslogicIsaIOPortReadStr,
3076	"BusLogic BIOS");
3077	if (RT_FAILURE(rc))
3078	return PDMDEV_SET_ERROR(pDevIns, rc, N_("BusLogic cannot register legacy I/O handlers"));
3079	}
3080
3081	/* Initialize task cache. */
3082	rc = RTMemCacheCreate(&pThis->hTaskCache, sizeof(BUSLOGICTASKSTATE), 0, UINT32_MAX,
3083	NULL, NULL, NULL, 0);
3084	if (RT_FAILURE(rc))
3085	return PDMDEV_SET_ERROR(pDevIns, rc,
3086	N_("BusLogic: Failed to initialize task cache\n"));
3087
3088	/* Initialize task queue. */
3089	rc = PDMDevHlpQueueCreate(pDevIns, sizeof(PDMQUEUEITEMCORE), 5, 0,
3090	buslogicNotifyQueueConsumer, true, "BugLogicTask", &pThis->pNotifierQueueR3);
3091	if (RT_FAILURE(rc))
3092	return rc;
3093	pThis->pNotifierQueueR0 = PDMQueueR0Ptr(pThis->pNotifierQueueR3);
3094	pThis->pNotifierQueueRC = PDMQueueRCPtr(pThis->pNotifierQueueR3);
3095
3096	rc = PDMDevHlpCritSectInit(pDevIns, &pThis->CritSectIntr, RT_SRC_POS, "BusLogic-Intr");
3097	if (RT_FAILURE(rc))
3098	return PDMDEV_SET_ERROR(pDevIns, rc,
3099	N_("BusLogic: cannot create critical section"));
3100
3101	/* Initialize per device state. */
3102	for (unsigned i = 0; i < RT_ELEMENTS(pThis->aDeviceStates); i++)
3103	{
3104	char szName[24];
3105	PBUSLOGICDEVICE pDevice = &pThis->aDeviceStates[i];
3106
3107	RTStrPrintf(szName, sizeof(szName), "Device%d", i);
3108
3109	/* Initialize static parts of the device. */
3110	pDevice->iLUN = i;
3111	pDevice->pBusLogicR3 = pThis;
3112	pDevice->pBusLogicR0 = PDMINS_2_DATA_R0PTR(pDevIns);
3113	pDevice->pBusLogicRC = PDMINS_2_DATA_RCPTR(pDevIns);
3114	pDevice->Led.u32Magic = PDMLED_MAGIC;
3115	pDevice->IBase.pfnQueryInterface = buslogicDeviceQueryInterface;
3116	pDevice->ISCSIPort.pfnSCSIRequestCompleted = buslogicDeviceSCSIRequestCompleted;
3117	pDevice->ISCSIPort.pfnQueryDeviceLocation = buslogicQueryDeviceLocation;
3118	pDevice->ILed.pfnQueryStatusLed = buslogicDeviceQueryStatusLed;
3119
3120	/* Attach SCSI driver. */
3121	rc = PDMDevHlpDriverAttach(pDevIns, pDevice->iLUN, &pDevice->IBase, &pDevice->pDrvBase, szName);
3122	if (RT_SUCCESS(rc))
3123	{
3124	/* Get SCSI connector interface. */
3125	pDevice->pDrvSCSIConnector = PDMIBASE_QUERY_INTERFACE(pDevice->pDrvBase, PDMISCSICONNECTOR);
3126	AssertMsgReturn(pDevice->pDrvSCSIConnector, ("Missing SCSI interface below\n"), VERR_PDM_MISSING_INTERFACE);
3127
3128	pDevice->fPresent = true;
3129	}
3130	else if (rc == VERR_PDM_NO_ATTACHED_DRIVER)
3131	{
3132	pDevice->pDrvBase = NULL;
3133	pDevice->fPresent = false;
3134	rc = VINF_SUCCESS;
3135	Log(("BusLogic: no driver attached to device %s\n", szName));
3136	}
3137	else
3138	{
3139	AssertLogRelMsgFailed(("BusLogic: Failed to attach %s\n", szName));
3140	return rc;
3141	}
3142	}
3143
3144	/*
3145	* Attach status driver (optional).
3146	*/
3147	PPDMIBASE pBase;
3148	rc = PDMDevHlpDriverAttach(pDevIns, PDM_STATUS_LUN, &pThis->IBase, &pBase, "Status Port");
3149	if (RT_SUCCESS(rc))
3150	pThis->pLedsConnector = PDMIBASE_QUERY_INTERFACE(pBase, PDMILEDCONNECTORS);
3151	else if (rc != VERR_PDM_NO_ATTACHED_DRIVER)
3152	{
3153	AssertMsgFailed(("Failed to attach to status driver. rc=%Rrc\n", rc));
3154	return PDMDEV_SET_ERROR(pDevIns, rc, N_("BusLogic cannot attach to status driver"));
3155	}
3156
3157	rc = PDMDevHlpSSMRegisterEx(pDevIns, BUSLOGIC_SAVED_STATE_MINOR_VERSION, sizeof(*pThis), NULL,
3158	NULL, buslogicLiveExec, NULL,
3159	NULL, buslogicSaveExec, NULL,
3160	NULL, buslogicLoadExec, buslogicLoadDone);
3161	if (RT_FAILURE(rc))
3162	return PDMDEV_SET_ERROR(pDevIns, rc, N_("BusLogic cannot register save state handlers"));
3163
3164	rc = buslogicHwReset(pThis);
3165	AssertMsgRC(rc, ("hardware reset of BusLogic host adapter failed rc=%Rrc\n", rc));
3166
3167	return rc;
3168	}
3169
3170	/**
3171	* The device registration structure.
3172	*/
3173	const PDMDEVREG g_DeviceBusLogic =
3174	{
3175	/* u32Version */
3176	PDM_DEVREG_VERSION,
3177	/* szName */
3178	"buslogic",
3179	/* szRCMod */
3180	"VBoxDDGC.gc",
3181	/* szR0Mod */
3182	"VBoxDDR0.r0",
3183	/* pszDescription */
3184	"BusLogic BT-958 SCSI host adapter.\n",
3185	/* fFlags */
3186	PDM_DEVREG_FLAGS_DEFAULT_BITS \| PDM_DEVREG_FLAGS_RC \| PDM_DEVREG_FLAGS_R0 \|
3187	PDM_DEVREG_FLAGS_FIRST_SUSPEND_NOTIFICATION \| PDM_DEVREG_FLAGS_FIRST_POWEROFF_NOTIFICATION,
3188	/* fClass */
3189	PDM_DEVREG_CLASS_STORAGE,
3190	/* cMaxInstances */
3191	~0,
3192	/* cbInstance */
3193	sizeof(BUSLOGIC),
3194	/* pfnConstruct */
3195	buslogicConstruct,
3196	/* pfnDestruct */
3197	buslogicDestruct,
3198	/* pfnRelocate */
3199	buslogicRelocate,
3200	/* pfnIOCtl */
3201	NULL,
3202	/* pfnPowerOn */
3203	NULL,
3204	/* pfnReset */
3205	buslogicReset,
3206	/* pfnSuspend */
3207	buslogicSuspend,
3208	/* pfnResume */
3209	buslogicResume,
3210	/* pfnAttach */
3211	buslogicAttach,
3212	/* pfnDetach */
3213	buslogicDetach,
3214	/* pfnQueryInterface. */
3215	NULL,
3216	/* pfnInitComplete */
3217	NULL,
3218	/* pfnPowerOff */
3219	buslogicPowerOff,
3220	/* pfnSoftReset */
3221	NULL,
3222	/* u32VersionEnd */
3223	PDM_DEVREG_VERSION
3224	};
3225
3226	#endif /* IN_RING3 */
3227	#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */
3228

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source: vbox/trunk/src/VBox/Devices/Storage/DevBusLogic.cpp@ 35756

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