![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to BusLogic.h CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [GnuMach] / Gnu-Mach / i386 / i386at / gpl / linux / scsi|
Return to BusLogic.h CVS log | Up to [GnuMach] / Gnu-Mach / i386 / i386at / gpl / linux / scsi |
1.1 root 1: /*
2:
3: Linux Driver for BusLogic MultiMaster SCSI Host Adapters
4:
5: Copyright 1995 by Leonard N. Zubkoff <[email protected]>
6:
7: See BusLogic.c for licensing information.
8:
9: */
10:
11:
12: /*
13: Define types for some of the structures that interface with the rest
14: of the Linux Kernel and SCSI Subsystem.
15: */
16:
17: typedef struct pt_regs Registers_T;
18: typedef Scsi_Host_Template SCSI_Host_Template_T;
19: typedef struct Scsi_Host SCSI_Host_T;
20: typedef struct scsi_disk SCSI_Disk_T;
21: typedef struct scsi_cmnd SCSI_Command_T;
22: typedef struct scatterlist SCSI_ScatterList_T;
23: typedef kdev_t KernelDevice_T;
24:
25:
26: /*
27: Define prototypes for the BusLogic Driver Interface Functions.
28: */
29:
30: const char *BusLogic_DriverInfo(SCSI_Host_T *);
31: int BusLogic_DetectHostAdapter(SCSI_Host_Template_T *);
32: int BusLogic_ReleaseHostAdapter(SCSI_Host_T *);
33: int BusLogic_QueueCommand(SCSI_Command_T *,
34: void (*CompletionRoutine)(SCSI_Command_T *));
35: int BusLogic_AbortCommand(SCSI_Command_T *);
36: int BusLogic_ResetCommand(SCSI_Command_T *);
37: int BusLogic_BIOSDiskParameters(SCSI_Disk_T *, KernelDevice_T, int *);
38:
39:
40: /*
41: Define the BusLogic SCSI Host Template structure.
42: */
43:
44: #define BUSLOGIC \
45: { NULL, /* Next */ \
46: NULL, /* Usage Count Pointer */ \
47: NULL, /* /proc Directory Entry */ \
48: NULL, /* /proc Info Function */ \
49: "BusLogic", /* Driver Name */ \
50: BusLogic_DetectHostAdapter, /* Detect Host Adapter */ \
51: BusLogic_ReleaseHostAdapter, /* Release Host Adapter */ \
52: BusLogic_DriverInfo, /* Driver Info Function */ \
53: NULL, /* Command Function */ \
54: BusLogic_QueueCommand, /* Queue Command Function */ \
55: BusLogic_AbortCommand, /* Abort Command Function */ \
56: BusLogic_ResetCommand, /* Reset Command Function */ \
57: NULL, /* Slave Attach Function */ \
58: BusLogic_BIOSDiskParameters, /* Disk BIOS Parameters */ \
59: 0, /* Can Queue */ \
60: 0, /* This ID */ \
61: 0, /* Scatter/Gather Table Size */ \
62: 0, /* SCSI Commands per LUN */ \
63: 0, /* Present */ \
64: 1, /* Default Unchecked ISA DMA */ \
65: ENABLE_CLUSTERING } /* Enable Clustering */
66:
67:
68: /*
69: BusLogic_DriverVersion protects the private portion of this file.
70: */
71:
72: #ifdef BusLogic_DriverVersion
73:
74:
75: /*
76: Define the maximum number of BusLogic Host Adapters that are supported.
77: */
78:
79: #define BusLogic_MaxHostAdapters 10
80:
81:
82: /*
83: Define the maximum number of I/O Addresses that may be probed.
84: */
85:
86: #define BusLogic_IO_MaxProbeAddresses 16
87:
88:
89: /*
90: Define the maximum number of Target IDs supported by this driver.
91: */
92:
93: #define BusLogic_MaxTargetIDs 16
94:
95:
96: /*
97: Define the number of Incoming and Outgoing Mailboxes used by this driver.
98: The maximum possible value is 255, since the MailboxCount parameter to the
99: Initialize Extended Mailbox command is limited to a single byte.
100: */
101:
102: #define BusLogic_MailboxCount 64
103:
104:
105: /*
106: Define the number of Command Control Blocks (CCBs) to create during
107: initialization for each Host Adapter. Additional CCBs will be allocated
108: if necessary as commands are queued.
109: */
110:
111: #define BusLogic_InitialCCBs 32
112:
113:
114: /*
115: Define the maximum number of Scatter/Gather Segments used by this driver.
116: For maximum performance, it is important that this limit be at least as
117: large as the maximum single request generated by the routine make_request.
118: */
119:
120: #define BusLogic_ScatterGatherLimit 128
121:
122:
123: /*
124: Define the default number of Concurrent Commands per Logical Unit to allow
125: for Target Devices depending on whether or not ISA bounce buffers are
126: required.
127: */
128:
129: #define BusLogic_Concurrency 7
130: #define BusLogic_Concurrency_BB 1
131:
132:
133: /*
134: Define the default amount of time in seconds to wait between a Host Adapter
135: Hard Reset which initiates a SCSI Bus Reset and issuing any SCSI commands.
136: Some SCSI devices get confused if they receive SCSI commands too soon after
137: a SCSI Bus Reset.
138: */
139:
140: #define BusLogic_DefaultBusSettleTime 2
141:
142:
143: /*
144: Define the possible Local Options.
145: */
146:
147: #define BusLogic_InhibitTargetInquiry 1
148:
149:
150: /*
151: Define the possible Global Options.
152: */
153:
154: #define BusLogic_TraceProbe 1
155: #define BusLogic_TraceHardReset 2
156: #define BusLogic_TraceConfiguration 4
157: #define BusLogic_TraceErrors 8
158:
159:
160: /*
161: Define the possible Error Recovery Options.
162: */
163:
164: #define BusLogic_ErrorRecoveryDefault 0
165: #define BusLogic_ErrorRecoveryHardReset 1
166: #define BusLogic_ErrorRecoveryBusDeviceReset 2
167: #define BusLogic_ErrorRecoveryNone 3
168:
169: static char
170: *BusLogic_ErrorRecoveryOptions[] =
171: { "Default", "Hard Reset", "Bus Device Reset", "None" },
172: *BusLogic_ErrorRecoveryOptions2[] =
173: { "D", "H", "B", "N" };
174:
175:
176: /*
177: Define a boolean data type.
178: */
179:
180: #define false 0
181: #define true 1
182: typedef unsigned char boolean;
183:
184:
185: /*
186: Define the BusLogic SCSI Host Adapter I/O Register Offsets.
187: */
188:
189: #define BusLogic_IO_PortCount 4 /* I/O Registers */
190: #define BusLogic_ControlRegister 0 /* WO register */
191: #define BusLogic_StatusRegister 0 /* RO register */
192: #define BusLogic_CommandParameterRegister 1 /* WO register */
193: #define BusLogic_DataInRegister 1 /* RO register */
194: #define BusLogic_InterruptRegister 2 /* RO register */
195: #define BusLogic_GeometryRegister 3 /* RO, undocumented */
196:
197:
198: /*
199: Define the bits in the write-only Control Register.
200: */
201:
202: #define BusLogic_ReservedCR 0x0F
203: #define BusLogic_SCSIBusReset 0x10
204: #define BusLogic_InterruptReset 0x20
205: #define BusLogic_SoftReset 0x40
206: #define BusLogic_HardReset 0x80
207:
208:
209: /*
210: Define the bits in the read-only Status Register.
211: */
212:
213: #define BusLogic_CommandInvalid 0x01
214: #define BusLogic_ReservedSR 0x02
215: #define BusLogic_DataInRegisterReady 0x04
216: #define BusLogic_CommandParameterRegisterBusy 0x08
217: #define BusLogic_HostAdapterReady 0x10
218: #define BusLogic_InitializationRequired 0x20
219: #define BusLogic_DiagnosticFailure 0x40
220: #define BusLogic_DiagnosticActive 0x80
221:
222:
223: /*
224: Define the bits in the read-only Interrupt Register.
225: */
226:
227: #define BusLogic_IncomingMailboxLoaded 0x01
228: #define BusLogic_OutgoingMailboxAvailable 0x02
229: #define BusLogic_CommandComplete 0x04
230: #define BusLogic_SCSIResetState 0x08
231: #define BusLogic_ReservedIR 0x70
232: #define BusLogic_InterruptValid 0x80
233:
234:
235: /*
236: Define the bits in the undocumented read-only Geometry Register.
237: */
238:
239: #define BusLogic_Drive0Geometry 0x03
240: #define BusLogic_Drive1Geometry 0x0C
241: #define BusLogic_ReservedGR 0x70
242: #define BusLogic_ExtendedTranslationEnabled 0x80
243:
244:
245: /*
246: Define the BusLogic SCSI Host Adapter Command Register Operation Codes.
247: */
248:
249: typedef enum
250: {
251: BusLogic_TestCommandCompleteInterrupt = 0x00, /* documented */
252: BusLogic_InitializeMailbox = 0x01, /* documented */
253: BusLogic_StartMailboxCommand = 0x02, /* documented */
254: BusLogic_StartBIOSCommand = 0x03, /* documented */
255: BusLogic_InquireBoardID = 0x04, /* documented */
256: BusLogic_EnableOutgoingMailboxAvailableIRQ = 0x05, /* documented */
257: BusLogic_SetSCSISelectionTimeout = 0x06, /* documented */
258: BusLogic_SetPreemptTimeOnBus = 0x07, /* documented */
259: BusLogic_SetTimeOffBus = 0x08, /* ISA Bus only */
260: BusLogic_SetBusTransferRate = 0x09, /* ISA Bus only */
261: BusLogic_InquireInstalledDevicesID0to7 = 0x0A, /* documented */
262: BusLogic_InquireConfiguration = 0x0B, /* documented */
263: BusLogic_SetTargetMode = 0x0C, /* now undocumented */
264: BusLogic_InquireSetupInformation = 0x0D, /* documented */
265: BusLogic_WriteAdapterLocalRAM = 0x1A, /* documented */
266: BusLogic_ReadAdapterLocalRAM = 0x1B, /* documented */
267: BusLogic_WriteBusMasterChipFIFO = 0x1C, /* documented */
268: BusLogic_ReadBusMasterChipFIFO = 0x1D, /* documented */
269: BusLogic_EchoCommandData = 0x1F, /* documented */
270: BusLogic_HostAdapterDiagnostic = 0x20, /* documented */
271: BusLogic_SetAdapterOptions = 0x21, /* documented */
272: BusLogic_InquireInstalledDevicesID8to15 = 0x23, /* Wide only */
273: BusLogic_InitializeExtendedMailbox = 0x81, /* documented */
274: BusLogic_InquireFirmwareVersion3rdDigit = 0x84, /* undocumented */
275: BusLogic_InquireFirmwareVersionLetter = 0x85, /* undocumented */
276: BusLogic_InquireBoardModelNumber = 0x8B, /* undocumented */
277: BusLogic_InquireSynchronousPeriod = 0x8C, /* undocumented */
278: BusLogic_InquireExtendedSetupInformation = 0x8D, /* documented */
279: BusLogic_EnableStrictRoundRobinMode = 0x8F, /* documented */
280: BusLogic_ModifyIOAddress = 0x95, /* PCI only */
281: BusLogic_EnableWideModeCCB = 0x96 /* Wide only */
282: }
283: BusLogic_OperationCode_T;
284:
285:
286: /*
287: Define the Inquire Board ID reply structure.
288: */
289:
290: typedef struct BusLogic_BoardID
291: {
292: unsigned char BoardType;
293: unsigned char CustomFeatures;
294: unsigned char FirmwareVersion1stDigit;
295: unsigned char FirmwareVersion2ndDigit;
296: }
297: BusLogic_BoardID_T;
298:
299:
300: /*
301: Define the Inquire Installed Devices ID 0 to 7 and Inquire Installed
302: Devices ID 8 to 15 reply type. For each Target ID, a byte is returned
303: where bit 0 set indicates that Logical Unit 0 exists, bit 1 set indicates
304: that Logical Unit 1 exists, and so on.
305: */
306:
307: typedef unsigned char BusLogic_InstalledDevices8_T[8];
308:
309: typedef unsigned char BusLogic_InstalledDevices_T[BusLogic_MaxTargetIDs];
310:
311:
312: /*
313: Define the Inquire Configuration reply structure.
314: */
315:
316: typedef struct BusLogic_Configuration
317: {
318: unsigned char :5; /* Byte 0: DMA Channel */
319: boolean DMA_Channel5:1;
320: boolean DMA_Channel6:1;
321: boolean DMA_Channel7:1;
322: boolean IRQ_Channel9:1; /* Byte 1: IRQ Channel */
323: boolean IRQ_Channel10:1;
324: boolean IRQ_Channel11:1;
325: boolean IRQ_Channel12:1;
326: unsigned char :1;
327: boolean IRQ_Channel14:1;
328: boolean IRQ_Channel15:1;
329: unsigned char :1;
330: unsigned char HostAdapterID:4; /* Byte 2: Host Adapter ID */
331: unsigned char :4;
332: }
333: BusLogic_Configuration_T;
334:
335:
336: /*
337: Define the Inquire Setup Information reply structure.
338: */
339:
340: typedef struct BusLogic_SynchronousValue
341: {
342: unsigned char Offset:4;
343: unsigned char TransferPeriod:3;
344: boolean Synchronous:1;
345: }
346: BusLogic_SynchronousValue_T;
347:
348: typedef BusLogic_SynchronousValue_T
349: BusLogic_SynchronousValues8_T[8];
350:
351: typedef BusLogic_SynchronousValue_T
352: BusLogic_SynchronousValues_T[BusLogic_MaxTargetIDs];
353:
354: typedef struct BusLogic_SetupInformation
355: {
356: boolean SynchronousInitiationEnabled:1; /* Byte 0 */
357: boolean ParityCheckEnabled:1;
358: unsigned char :6;
359: unsigned char BusTransferRate; /* Byte 1 */
360: unsigned char PreemptTimeOnBus; /* Byte 2 */
361: unsigned char TimeOffBus; /* Byte 3 */
362: unsigned char MailboxCount; /* Byte 4 */
363: unsigned char MailboxAddress[3]; /* Bytes 5-7 */
364: BusLogic_SynchronousValues8_T SynchronousValuesID0to7; /* Bytes 8-15 */
365: unsigned char DisconnectPermittedID0to7; /* Byte 16 */
366: unsigned char Signature; /* Byte 17 */
367: unsigned char CharacterD; /* Byte 18 */
368: unsigned char BusLetter; /* Byte 19 */
369: unsigned char :8; /* Byte 20 */
370: unsigned char :8; /* Byte 21 */
371: BusLogic_SynchronousValues8_T SynchronousValuesID8to15; /* Bytes 22-29 */
372: unsigned char DisconnectPermittedID8to15; /* Byte 30 */
373: }
374: BusLogic_SetupInformation_T;
375:
376:
377: /*
378: Define the Initialize Extended Mailbox request structure.
379: */
380:
381: typedef struct BusLogic_ExtendedMailboxRequest
382: {
383: unsigned char MailboxCount;
384: void *BaseMailboxAddress __attribute__ ((packed));
385: }
386: BusLogic_ExtendedMailboxRequest_T;
387:
388:
389: /*
390: Define the Inquire Firmware Version 3rd Digit reply type.
391: */
392:
393: typedef unsigned char BusLogic_FirmwareVersion3rdDigit_T;
394:
395:
396: /*
397: Define the Inquire Firmware Version Letter reply type.
398: */
399:
400: typedef unsigned char BusLogic_FirmwareVersionLetter_T;
401:
402:
403: /*
404: Define the Inquire Board Model Number reply type.
405: */
406:
407: typedef unsigned char BusLogic_BoardModelNumber_T[5];
408:
409:
410: /*
411: Define the Inquire Synchronous Period reply type. For each Target ID, a byte
412: is returned which represents the Synchronous Transfer Period in units of 10
413: nanoseconds.
414: */
415:
416: typedef unsigned char BusLogic_SynchronousPeriod_T[BusLogic_MaxTargetIDs];
417:
418:
419: /*
420: Define the Inquire Extended Setup Information reply structure.
421: */
422:
423: typedef struct BusLogic_ExtendedSetupInformation
424: {
425: unsigned char BusType; /* Byte 0 */
426: unsigned char BIOS_Address; /* Byte 1 */
427: unsigned short ScatterGatherLimit; /* Bytes 2-3 */
428: unsigned char MailboxCount; /* Byte 4 */
429: void *BaseMailboxAddress __attribute__ ((packed)); /* Bytes 5-8 */
430: struct { unsigned char :6; /* Byte 9 */
431: boolean LevelSensitiveInterrupts:1;
432: unsigned char :1; } Misc;
433: unsigned char FirmwareRevision[3]; /* Bytes 10-12 */
434: boolean HostWideSCSI:1; /* Byte 13 Bit 0 */
435: boolean HostDifferentialSCSI:1; /* Byte 13 Bit 1 */
436: unsigned char :6;
437: }
438: BusLogic_ExtendedSetupInformation_T;
439:
440:
441: /*
442: Define the Enable Strict Round Robin Mode request type.
443: */
444:
445: #define BusLogic_AggressiveRoundRobinMode 0x00
446: #define BusLogic_StrictRoundRobinMode 0x01
447:
448: typedef unsigned char BusLogic_RoundRobinModeRequest_T;
449:
450:
451: /*
452: Define the Modify I/O Address request type. On PCI Host Adapters, the
453: Modify I/O Address command allows modification of the ISA compatible I/O
454: Address that the Host Adapter responds to; it does not affect the PCI
455: compliant I/O Address assigned at system initialization.
456: */
457:
458: #define BusLogic_ModifyIO_330 0x00
459: #define BusLogic_ModifyIO_334 0x01
460: #define BusLogic_ModifyIO_230 0x02
461: #define BusLogic_ModifyIO_234 0x03
462: #define BusLogic_ModifyIO_130 0x04
463: #define BusLogic_ModifyIO_134 0x05
464: #define BusLogic_ModifyIO_Disable 0x06
465: #define BusLogic_ModifyIO_Disable2 0x07
466:
467: typedef unsigned char BusLogic_ModifyIOAddressRequest_T;
468:
469:
470: /*
471: Define the Enable Wide Mode SCSI CCB request type. Wide Mode CCBs are
472: necessary to support more than 8 Logical Units per Target.
473: */
474:
475: #define BusLogic_NormalModeCCB 0x00
476: #define BusLogic_WideModeCCB 0x01
477:
478: typedef unsigned char BusLogic_WideModeCCBRequest_T;
479:
480:
481: /*
482: Define the Requested Reply Length type used by the Inquire Setup Information,
483: Inquire Board Model Number, Inquire Synchronous Period, and Inquire Extended
484: Setup Information commands.
485: */
486:
487: typedef unsigned char BusLogic_RequestedReplyLength_T;
488:
489:
490: /*
491: Define a Lock data structure. Until a true symmetric multiprocessing kernel
492: is available, locking is implemented as saving the processor flags and
493: disabling interrupts, and unlocking restores the saved processor flags.
494: */
495:
496: typedef unsigned long BusLogic_Lock_T;
497:
498:
499: /*
500: Define the Outgoing Mailbox Action Codes.
501: */
502:
503: typedef enum
504: {
505: BusLogic_OutgoingMailboxFree = 0,
506: BusLogic_MailboxStartCommand = 1,
507: BusLogic_MailboxAbortCommand = 2
508: }
509: BusLogic_ActionCode_T;
510:
511:
512: /*
513: Define the Incoming Mailbox Completion Codes.
514: */
515:
516: typedef enum
517: {
518: BusLogic_IncomingMailboxFree = 0,
519: BusLogic_CommandCompletedWithoutError = 1,
520: BusLogic_CommandAbortedAtHostRequest = 2,
521: BusLogic_AbortedCommandNotFound = 3,
522: BusLogic_CommandCompletedWithError = 4
523: }
524: BusLogic_CompletionCode_T;
525:
526:
527: /*
528: Define the Command Control Block (CCB) Opcodes.
529: */
530:
531: typedef enum
532: {
533: BusLogic_InitiatorCCB = 0x00,
534: BusLogic_TargetCCB = 0x01,
535: BusLogic_InitiatorCCB_ScatterGather = 0x02,
536: BusLogic_InitiatorCCB_ResidualDataLength = 0x03,
537: BusLogic_InitiatorCCB_ScatterGatherResidual = 0x04,
538: BusLogic_SCSIBusDeviceReset = 0x81
539: }
540: BusLogic_CCB_Opcode_T;
541:
542:
543: /*
544: Define the CCB Data Direction Codes.
545: */
546:
547: typedef enum
548: {
549: BusLogic_UncheckedDataTransfer = 0x00,
550: BusLogic_DataInLengthChecked = 0x01,
551: BusLogic_DataOutLengthChecked = 0x02,
552: BusLogic_NoDataTransfer = 0x03
553: }
554: BusLogic_DataDirection_T;
555:
556:
557: /*
558: Define the Host Adapter Status Codes.
559: */
560:
561: typedef enum
562: {
563: BusLogic_CommandCompletedNormally = 0x00,
564: BusLogic_LinkedCommandCompleted = 0x0A,
565: BusLogic_LinkedCommandCompletedWithFlag = 0x0B,
566: BusLogic_SCSISelectionTimeout = 0x11,
567: BusLogic_DataOverUnderRun = 0x12,
568: BusLogic_UnexpectedBusFree = 0x13,
569: BusLogic_InvalidBusPhaseRequested = 0x14,
570: BusLogic_InvalidOutgoingMailboxActionCode = 0x15,
571: BusLogic_InvalidCommandOperationCode = 0x16,
572: BusLogic_LinkedCCBhasInvalidLUN = 0x17,
573: BusLogic_InvalidCommandParameter = 0x1A,
574: BusLogic_AutoRequestSenseFailed = 0x1B,
575: BusLogic_TaggedQueuingMessageRejected = 0x1C,
576: BusLogic_UnsupportedMessageReceived = 0x1D,
577: BusLogic_HostAdapterHardwareFailed = 0x20,
578: BusLogic_TargetFailedResponseToATN = 0x21,
579: BusLogic_HostAdapterAssertedRST = 0x22,
580: BusLogic_OtherDeviceAssertedRST = 0x23,
581: BusLogic_TargetDeviceReconnectedImproperly = 0x24,
582: BusLogic_HostAdapterAssertedBusDeviceReset = 0x25,
583: BusLogic_AbortQueueGenerated = 0x26,
584: BusLogic_HostAdapterSoftwareError = 0x27,
585: BusLogic_HostAdapterHardwareTimeoutError = 0x30,
586: BusLogic_SCSIParityErrorDetected = 0x34
587: }
588: BusLogic_HostAdapterStatus_T;
589:
590:
591: /*
592: Define the SCSI Target Device Status Codes.
593: */
594:
595: typedef enum
596: {
597: BusLogic_OperationGood = 0x00,
598: BusLogic_CheckCondition = 0x02,
599: BusLogic_DeviceBusy = 0x08
600: }
601: BusLogic_TargetDeviceStatus_T;
602:
603:
604: /*
605: Define the Queue Tag Codes.
606: */
607:
608: typedef enum
609: {
610: BusLogic_SimpleQueueTag = 0x00,
611: BusLogic_HeadOfQueueTag = 0x01,
612: BusLogic_OrderedQueueTag = 0x02,
613: BusLogic_ReservedQT = 0x03
614: }
615: BusLogic_QueueTag_T;
616:
617:
618: /*
619: Define the SCSI Command Descriptor Block (CDB).
620: */
621:
622: #define BusLogic_CDB_MaxLength 12
623:
624: typedef unsigned char SCSI_CDB_T[BusLogic_CDB_MaxLength];
625:
626:
627: /*
628: Define the SCSI Sense Data.
629: */
630:
631: #define BusLogic_SenseDataMaxLength 255
632:
633: typedef unsigned char SCSI_SenseData_T[BusLogic_SenseDataMaxLength];
634:
635:
636: /*
637: Define the Scatter/Gather Segment structure required by the Host Adapter
638: Firmware Interface.
639: */
640:
641: typedef struct BusLogic_ScatterGatherSegment
642: {
643: unsigned long SegmentByteCount;
644: void *SegmentDataPointer;
645: }
646: BusLogic_ScatterGatherSegment_T;
647:
648:
649: /*
650: Define the 32 Bit Mode Command Control Block (CCB) structure. The first 40
651: bytes are defined by the Host Adapter Firmware Interface. The remaining
652: components are defined by the Linux BusLogic Driver. Wide Mode CCBs differ
653: from standard 32 Bit Mode CCBs only in having the TagEnable and QueueTag
654: fields moved from byte 17 to byte 1, and the Logical Unit field in byte 17
655: expanded to 6 bits; unfortunately, using a union of structs containing
656: enumeration type bitfields to provide both definitions leads to packing
657: problems, so the following definition is used which requires setting
658: TagEnable to Logical Unit bit 5 in Wide Mode CCBs.
659: */
660:
661: typedef struct BusLogic_CCB
662: {
663: /*
664: BusLogic Host Adapter Firmware Portion.
665: */
666: BusLogic_CCB_Opcode_T Opcode:8; /* Byte 0 */
667: unsigned char :3; /* Byte 1 Bits 0-2 */
668: BusLogic_DataDirection_T DataDirection:2; /* Byte 1 Bits 3-4 */
669: boolean WideModeTagEnable:1; /* Byte 1 Bit 5 */
670: BusLogic_QueueTag_T WideModeQueueTag:2; /* Byte 1 Bits 6-7 */
671: unsigned char CDB_Length; /* Byte 2 */
672: unsigned char SenseDataLength; /* Byte 3 */
673: unsigned long DataLength; /* Bytes 4-7 */
674: void *DataPointer; /* Bytes 8-11 */
675: unsigned char :8; /* Byte 12 */
676: unsigned char :8; /* Byte 13 */
677: BusLogic_HostAdapterStatus_T HostAdapterStatus:8; /* Byte 14 */
678: BusLogic_TargetDeviceStatus_T TargetDeviceStatus:8; /* Byte 15 */
679: unsigned char TargetID; /* Byte 16 */
680: unsigned char LogicalUnit:5; /* Byte 17 Bits 0-4 */
681: boolean TagEnable:1; /* Byte 17 Bit 5 */
682: BusLogic_QueueTag_T QueueTag:2; /* Byte 17 Bits 6-7 */
683: SCSI_CDB_T CDB; /* Bytes 18-29 */
684: unsigned char :8; /* Byte 30 */
685: unsigned char :8; /* Byte 31 */
686: unsigned long :32; /* Bytes 32-35 */
687: SCSI_SenseData_T *SenseDataPointer; /* Bytes 36-39 */
688: /*
689: BusLogic Linux Driver Portion.
690: */
691: struct BusLogic_HostAdapter *HostAdapter;
692: SCSI_Command_T *Command;
693: enum { BusLogic_CCB_Free = 0,
694: BusLogic_CCB_Active = 1,
695: BusLogic_CCB_Completed = 2,
696: BusLogic_CCB_Reset = 3 } Status;
697: BusLogic_CompletionCode_T MailboxCompletionCode;
698: unsigned int SerialNumber;
699: struct BusLogic_CCB *Next;
700: struct BusLogic_CCB *NextAll;
701: BusLogic_ScatterGatherSegment_T
702: ScatterGatherList[BusLogic_ScatterGatherLimit];
703: }
704: BusLogic_CCB_T;
705:
706:
707: /*
708: Define the 32 Bit Mode Outgoing Mailbox structure.
709: */
710:
711: typedef struct BusLogic_OutgoingMailbox
712: {
713: BusLogic_CCB_T *CCB;
714: unsigned long :24;
715: BusLogic_ActionCode_T ActionCode:8;
716: }
717: BusLogic_OutgoingMailbox_T;
718:
719:
720: /*
721: Define the 32 Bit Mode Incoming Mailbox structure.
722: */
723:
724: typedef struct BusLogic_IncomingMailbox
725: {
726: BusLogic_CCB_T *CCB;
727: BusLogic_HostAdapterStatus_T HostAdapterStatus:8;
728: BusLogic_TargetDeviceStatus_T TargetDeviceStatus:8;
729: unsigned char :8;
730: BusLogic_CompletionCode_T CompletionCode:8;
731: }
732: BusLogic_IncomingMailbox_T;
733:
734:
735: /*
736: Define the possible Bus Types.
737: */
738:
739: typedef enum
740: {
741: BusLogic_Unknown_Bus = 0,
742: BusLogic_ISA_Bus = 1,
743: BusLogic_MCA_Bus = 2,
744: BusLogic_EISA_Bus = 3,
745: BusLogic_VESA_Bus = 4,
746: BusLogic_PCI_Bus = 5
747: }
748: BusLogic_BusType_T;
749:
750: static char
751: *BusLogic_BusNames[] =
752: { "Unknown", "ISA", "MCA", "EISA", "VESA", "PCI" };
753:
754:
755: /*
756: Define the Linux BusLogic Driver Command Line Entry structure.
757: */
758:
759: typedef struct BusLogic_CommandLineEntry
760: {
761: unsigned short IO_Address;
762: unsigned short Concurrency;
763: unsigned short BusSettleTime;
764: unsigned short LocalOptions;
765: unsigned short TaggedQueuingPermitted;
766: unsigned short TaggedQueuingPermittedMask;
767: unsigned char ErrorRecoveryOption[BusLogic_MaxTargetIDs];
768: }
769: BusLogic_CommandLineEntry_T;
770:
771:
772: /*
773: Define the Linux BusLogic Driver Host Adapter structure.
774: */
775:
776: typedef struct BusLogic_HostAdapter
777: {
778: SCSI_Host_T *SCSI_Host;
779: unsigned char HostNumber;
780: unsigned char ModelName[9];
781: unsigned char FirmwareVersion[6];
782: unsigned char BoardName[18];
783: unsigned char InterruptLabel[62];
784: unsigned short IO_Address;
785: unsigned char IRQ_Channel;
786: unsigned char DMA_Channel;
787: unsigned char SCSI_ID;
788: BusLogic_BusType_T BusType:3;
789: boolean IRQ_ChannelAcquired:1;
790: boolean DMA_ChannelAcquired:1;
791: boolean SynchronousInitiation:1;
792: boolean ParityChecking:1;
793: boolean ExtendedTranslation:1;
794: boolean LevelSensitiveInterrupts:1;
795: boolean HostWideSCSI:1;
796: boolean HostDifferentialSCSI:1;
797: boolean HostAdapterResetPending:1;
798: boolean BounceBuffersRequired:1;
799: volatile boolean HostAdapterCommandCompleted:1;
800: unsigned short HostAdapterScatterGatherLimit;
801: unsigned short DriverScatterGatherLimit;
802: unsigned short MaxTargetIDs;
803: unsigned short MaxLogicalUnits;
804: unsigned short Concurrency;
805: unsigned short BusSettleTime;
806: unsigned short LocalOptions;
807: unsigned short DisconnectPermitted;
808: unsigned short TaggedQueuingPermitted;
809: unsigned long BIOS_Address;
810: BusLogic_InstalledDevices_T InstalledDevices;
811: BusLogic_SynchronousValues_T SynchronousValues;
812: BusLogic_SynchronousPeriod_T SynchronousPeriod;
813: BusLogic_Lock_T Lock;
814: struct BusLogic_HostAdapter *Next;
815: BusLogic_CommandLineEntry_T *CommandLineEntry;
816: BusLogic_CCB_T *All_CCBs;
817: BusLogic_CCB_T *Free_CCBs;
818: unsigned char ErrorRecoveryOption[BusLogic_MaxTargetIDs];
819: unsigned char CommandSuccessfulFlag[BusLogic_MaxTargetIDs];
820: unsigned long ReadWriteOperationCount[BusLogic_MaxTargetIDs];
821: unsigned char QueuedOperationCount[BusLogic_MaxTargetIDs];
822: unsigned long LastSequencePoint[BusLogic_MaxTargetIDs];
823: BusLogic_OutgoingMailbox_T *FirstOutgoingMailbox;
824: BusLogic_OutgoingMailbox_T *LastOutgoingMailbox;
825: BusLogic_OutgoingMailbox_T *NextOutgoingMailbox;
826: BusLogic_IncomingMailbox_T *FirstIncomingMailbox;
827: BusLogic_IncomingMailbox_T *LastIncomingMailbox;
828: BusLogic_IncomingMailbox_T *NextIncomingMailbox;
829: BusLogic_OutgoingMailbox_T OutgoingMailboxes[BusLogic_MailboxCount];
830: BusLogic_IncomingMailbox_T IncomingMailboxes[BusLogic_MailboxCount];
831: }
832: BusLogic_HostAdapter_T;
833:
834:
835: /*
836: Define a symbolic structure for the BIOS Disk Parameters.
837: */
838:
839: typedef struct BIOS_DiskParameters
840: {
841: int Heads;
842: int Sectors;
843: int Cylinders;
844: }
845: BIOS_DiskParameters_T;
846:
847:
848: /*
849: BusLogic_LockHostAdapter acquires exclusive access to Host Adapter.
850: */
851:
852: static inline
853: void BusLogic_LockHostAdapter(BusLogic_HostAdapter_T *HostAdapter)
854: {
855: save_flags(HostAdapter->Lock);
856: cli();
857: }
858:
859:
860: /*
861: BusLogic_UnlockHostAdapter releases exclusive access to Host Adapter.
862: */
863:
864: static inline
865: void BusLogic_UnlockHostAdapter(BusLogic_HostAdapter_T *HostAdapter)
866: {
867: restore_flags(HostAdapter->Lock);
868: }
869:
870:
871: /*
872: BusLogic_LockHostAdapterID acquires exclusive access to Host Adapter,
873: but is only called when interrupts are disabled.
874: */
875:
876: static inline
877: void BusLogic_LockHostAdapterID(BusLogic_HostAdapter_T *HostAdapter)
878: {
879: }
880:
881:
882: /*
883: BusLogic_UnlockHostAdapterID releases exclusive access to Host Adapter,
884: but is only called when interrupts are disabled.
885: */
886:
887: static inline
888: void BusLogic_UnlockHostAdapterID(BusLogic_HostAdapter_T *HostAdapter)
889: {
890: }
891:
892:
893: /*
894: Define functions to provide an abstraction for reading and writing the
895: Host Adapter I/O Registers.
896: */
897:
898: static inline
899: void BusLogic_WriteControlRegister(BusLogic_HostAdapter_T *HostAdapter,
900: unsigned char Value)
901: {
902: outb(Value, HostAdapter->IO_Address + BusLogic_ControlRegister);
903: }
904:
905: static inline
906: unsigned char BusLogic_ReadStatusRegister(BusLogic_HostAdapter_T *HostAdapter)
907: {
908: return inb(HostAdapter->IO_Address + BusLogic_StatusRegister);
909: }
910:
911: static inline
912: void BusLogic_WriteCommandParameterRegister(BusLogic_HostAdapter_T *HostAdapter,
913: unsigned char Value)
914: {
915: outb(Value, HostAdapter->IO_Address + BusLogic_CommandParameterRegister);
916: }
917:
918: static inline
919: unsigned char BusLogic_ReadDataInRegister(BusLogic_HostAdapter_T *HostAdapter)
920: {
921: return inb(HostAdapter->IO_Address + BusLogic_DataInRegister);
922: }
923:
924: static inline
925: unsigned char BusLogic_ReadInterruptRegister(BusLogic_HostAdapter_T
926: *HostAdapter)
927: {
928: return inb(HostAdapter->IO_Address + BusLogic_InterruptRegister);
929: }
930:
931: static inline
932: unsigned char BusLogic_ReadGeometryRegister(BusLogic_HostAdapter_T *HostAdapter)
933: {
934: return inb(HostAdapter->IO_Address + BusLogic_GeometryRegister);
935: }
936:
937:
938: /*
939: BusLogic_StartMailboxScan issues a Start Mailbox Scan command, which
940: notifies the Host Adapter that an entry has been made in an Outgoing
941: Mailbox.
942: */
943:
944: static inline
945: void BusLogic_StartMailboxScan(BusLogic_HostAdapter_T *HostAdapter)
946: {
947: BusLogic_WriteCommandParameterRegister(HostAdapter,
948: BusLogic_StartMailboxCommand);
949: }
950:
951:
952: /*
953: BusLogic_Delay waits for Seconds to elapse.
954: */
955:
956: static inline void BusLogic_Delay(int Seconds)
957: {
958: unsigned long TimeoutJiffies = jiffies + Seconds * HZ;
959: unsigned long ProcessorFlags;
960: save_flags(ProcessorFlags);
961: sti();
962: while (jiffies < TimeoutJiffies) ;
963: restore_flags(ProcessorFlags);
964: }
965:
966:
967: /*
968: Define prototypes for the forward referenced BusLogic Driver
969: Internal Functions.
970: */
971:
972: static void BusLogic_InterruptHandler(int, Registers_T *);
973: static int BusLogic_ResetHostAdapter(BusLogic_HostAdapter_T *,
974: SCSI_Command_T *);
975:
976:
977: #endif /* BusLogic_DriverVersion */
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.