patch-1.3.42 linux/drivers/scsi/BusLogic.h

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diff -u --recursive --new-file v1.3.41/linux/drivers/scsi/BusLogic.h linux/drivers/scsi/BusLogic.h
@@ -0,0 +1,967 @@
+/*
+
+  Linux Driver for BusLogic SCSI Host Adapters
+
+  Copyright 1995 by Leonard N. Zubkoff <lnz@dandelion.com>
+
+  See BusLogic.c for licensing information.
+
+*/
+
+
+/*
+  Define types for some of the structures that interface with the rest
+  of the Linux Kernel and SCSI Subsystem.
+*/
+
+typedef struct pt_regs Registers_T;
+typedef Scsi_Host_Template SCSI_Host_Template_T;
+typedef struct Scsi_Host SCSI_Host_T;
+typedef struct scsi_disk SCSI_Disk_T;
+typedef struct scsi_cmnd SCSI_Command_T;
+typedef struct scatterlist SCSI_ScatterList_T;
+typedef kdev_t KernelDevice_T;
+
+
+/*
+  Define prototypes for the BusLogic Driver Interface Functions.
+*/
+
+const char *BusLogic_DriverInfo(SCSI_Host_T *);
+int BusLogic_DetectHostAdapter(SCSI_Host_Template_T *);
+int BusLogic_ReleaseHostAdapter(SCSI_Host_T *);
+int BusLogic_QueueCommand(SCSI_Command_T *,
+			  void (*CompletionRoutine)(SCSI_Command_T *));
+int BusLogic_AbortCommand(SCSI_Command_T *);
+int BusLogic_ResetCommand(SCSI_Command_T *);
+int BusLogic_BIOSDiskParameters(SCSI_Disk_T *, KernelDevice_T, int *);
+
+
+/*
+  Define the BusLogic SCSI Host Template structure.
+*/
+
+#define BUSLOGIC							 \
+  { NULL,				/* Next			     */  \
+    NULL,				/* Usage Count Pointer	     */  \
+    NULL,				/* /proc Directory Entry     */	 \
+    NULL,				/* /proc Info Function	     */	 \
+    "BusLogic",				/* Driver Name		     */  \
+    BusLogic_DetectHostAdapter,		/* Detect Host Adapter	     */  \
+    BusLogic_ReleaseHostAdapter,	/* Release Host Adapter	     */  \
+    BusLogic_DriverInfo,		/* Driver Info Function	     */  \
+    NULL,				/* Command Function	     */  \
+    BusLogic_QueueCommand,		/* Queue Command Function    */  \
+    BusLogic_AbortCommand,		/* Abort Command Function    */  \
+    BusLogic_ResetCommand,		/* Reset Command Function    */  \
+    NULL,				/* Slave Attach Function     */  \
+    BusLogic_BIOSDiskParameters,	/* Disk BIOS Parameters	     */  \
+    0,					/* Can Queue		     */  \
+    0,					/* This ID		     */  \
+    0,					/* Scatter/Gather Table Size */  \
+    0,					/* SCSI Commands per LUN     */  \
+    0,					/* Present		     */  \
+    1,					/* Default Unchecked ISA DMA */  \
+    ENABLE_CLUSTERING }			/* Enable Clustering	     */
+
+
+/*
+  BusLogic_DriverVersion protects the private portion of this file.
+*/
+
+#ifdef BusLogic_DriverVersion
+
+
+/*
+  Define the maximum number of BusLogic Host Adapters that are supported.
+*/
+
+#define BusLogic_MaxHostAdapters		10
+
+
+/*
+  Define the maximum number of I/O Addresses that may be probed.
+*/
+
+#define BusLogic_IO_MaxProbeAddresses		16
+
+
+/*
+  Define the maximum number of Target IDs supported by this driver.
+*/
+
+#define BusLogic_MaxTargetIDs			16
+
+
+/*
+  Define the number of Incoming and Outgoing Mailboxes used by this driver.
+  Since BusLogic Host Adapters have room to buffer 32 commands internally,
+  there is significant virtue in setting BusLogic_MailboxCount to 32 or above.
+  The maximum possible value is 255, since the MailboxCount parameter to the
+  Initialize Extended Mailbox command is limited to a single byte.
+*/
+
+#define BusLogic_MailboxCount			32
+
+
+/*
+  Define the number of Command Control Blocks (CCBs) to create during
+  initialization for each Host Adapter.  Additional CCBs will be allocated
+  if necessary as commands are queued.
+*/
+
+#define BusLogic_InitialCCBs			32
+
+
+/*
+  Define the maximum number of Scatter/Gather Segments used by this driver.
+  For maximum performance, it is important that this limit be at least as
+  large as the maximum single request generated by the routine make_request.
+*/
+
+#define BusLogic_ScatterGatherLimit		128
+
+
+/*
+  Define the default number of Concurrent Commands per Logical Unit to allow
+  for Target Devices on non-ISA and ISA Host Adapters.
+*/
+
+#define BusLogic_Concurrency			7
+#define BusLogic_Concurrency_ISA		1
+
+
+/*
+  Define the default amount of time in seconds to wait between a Host Adapter
+  Hard Reset which initiates a SCSI Bus Reset and issuing any SCSI commands.
+  Some SCSI devices get confused if they receive SCSI commands too soon after
+  a SCSI Bus Reset.
+*/
+
+#define BusLogic_DefaultBusSettleTime		2
+
+
+/*
+  Define the possible Tracing Options.
+*/
+
+#define BusLogic_TraceProbe			1
+#define BusLogic_TraceHardReset			2
+#define BusLogic_TraceConfiguration		4
+#define BusLogic_TraceErrors			8
+
+
+/*
+  Define the possible Error Recovery Options.
+*/
+
+#define BusLogic_ErrorRecoveryDefault		0
+#define BusLogic_ErrorRecoveryHardReset		1
+#define BusLogic_ErrorRecoveryBusDeviceReset	2
+#define BusLogic_ErrorRecoveryNone		3
+
+static char
+  *BusLogic_ErrorRecoveryOptions[] =
+    { "Default", "Hard Reset", "Bus Device Reset", "None" },
+  *BusLogic_ErrorRecoveryOptions2[] =
+    { "D", "H", "B", "N" };
+
+
+/*
+  Define a boolean data type.
+*/
+
+#define false 0
+#define true  1
+typedef unsigned char boolean;
+
+
+/*
+  Define the BusLogic SCSI Host Adapter I/O Register Offsets.
+*/
+
+#define BusLogic_IO_PortCount			4	/* I/O Registers */
+#define BusLogic_ControlRegister		0	/* WO register */
+#define BusLogic_StatusRegister			0	/* RO register */
+#define BusLogic_CommandParameterRegister	1	/* WO register */
+#define BusLogic_DataInRegister			1	/* RO register */
+#define BusLogic_InterruptRegister		2	/* RO register */
+#define BusLogic_GeometryRegister		3	/* RO, undocumented */
+
+
+/*
+  Define the bits in the write-only Control Register.
+*/
+
+#define BusLogic_ReservedCR			0x0F
+#define BusLogic_SCSIBusReset			0x10
+#define BusLogic_InterruptReset			0x20
+#define BusLogic_SoftReset			0x40
+#define BusLogic_HardReset			0x80
+
+
+/*
+  Define the bits in the read-only Status Register.
+*/
+
+#define BusLogic_CommandInvalid			0x01
+#define BusLogic_ReservedSR			0x02
+#define BusLogic_DataInRegisterReady		0x04
+#define BusLogic_CommandParameterRegisterBusy	0x08
+#define BusLogic_HostAdapterReady		0x10
+#define BusLogic_InitializationRequired		0x20
+#define BusLogic_DiagnosticFailure		0x40
+#define BusLogic_DiagnosticActive		0x80
+
+
+/*
+  Define the bits in the read-only Interrupt Register.
+*/
+
+#define BusLogic_IncomingMailboxLoaded		0x01
+#define BusLogic_OutgoingMailboxAvailable	0x02
+#define BusLogic_CommandComplete		0x04
+#define BusLogic_SCSIResetState			0x08
+#define BusLogic_ReservedIR			0x70
+#define BusLogic_InterruptValid			0x80
+
+
+/*
+  Define the bits in the undocumented read-only Geometry Register.
+*/
+
+#define BusLogic_Drive0Geometry			0x03
+#define BusLogic_Drive1Geometry			0x0C
+#define BusLogic_ReservedGR			0x70
+#define BusLogic_ExtendedTranslationEnabled	0x80
+
+
+/*
+  Define the BusLogic SCSI Host Adapter Command Register Operation Codes.
+*/
+
+typedef enum
+{
+  BusLogic_TestCommandCompleteInterrupt =	0x00,	/* documented */
+  BusLogic_InitializeMailbox =			0x01,	/* documented */
+  BusLogic_StartMailboxCommand =		0x02,	/* documented */
+  BusLogic_StartBIOSCommand =			0x03,	/* documented */
+  BusLogic_InquireBoardID =			0x04,	/* documented */
+  BusLogic_EnableOutgoingMailboxAvailableIRQ =	0x05,	/* documented */
+  BusLogic_SetSCSISelectionTimeout =		0x06,	/* documented */
+  BusLogic_SetPreemptTimeOnBus =		0x07,	/* documented */
+  BusLogic_SetTimeOffBus =			0x08,	/* ISA Bus only */
+  BusLogic_SetBusTransferRate =			0x09,	/* ISA Bus only */
+  BusLogic_InquireInstalledDevicesID0to7 =	0x0A,	/* documented */
+  BusLogic_InquireConfiguration =		0x0B,	/* documented */
+  BusLogic_SetTargetMode =			0x0C,	/* now undocumented */
+  BusLogic_InquireSetupInformation =		0x0D,	/* documented */
+  BusLogic_WriteAdapterLocalRAM =		0x1A,	/* documented */
+  BusLogic_ReadAdapterLocalRAM =		0x1B,	/* documented */
+  BusLogic_WriteBusMasterChipFIFO =		0x1C,	/* documented */
+  BusLogic_ReadBusMasterChipFIFO =		0x1D,	/* documented */
+  BusLogic_EchoCommandData =			0x1F,	/* documented */
+  BusLogic_HostAdapterDiagnostic =		0x20,	/* documented */
+  BusLogic_SetAdapterOptions =			0x21,	/* documented */
+  BusLogic_InquireInstalledDevicesID8to15 =	0x23,	/* Wide only */
+  BusLogic_InitializeExtendedMailbox =		0x81,	/* documented */
+  BusLogic_InquireFirmwareVersion3rdDigit =	0x84,	/* undocumented */
+  BusLogic_InquireFirmwareVersionLetter =	0x85,	/* undocumented */
+  BusLogic_InquireBoardModelAndRevision =	0x8B,	/* undocumented */
+  BusLogic_InquireSynchronousPeriod =		0x8C,	/* undocumented */
+  BusLogic_InquireExtendedSetupInformation =	0x8D,	/* documented */
+  BusLogic_EnableStrictRoundRobinMode =		0x8F,	/* documented */
+  BusLogic_ModifyIOAddress =			0x95,	/* PCI only */
+  BusLogic_EnableWideModeCCB =			0x96	/* Wide only */
+}
+BusLogic_OperationCode_T;
+
+
+/*
+  Define the Inquire Board ID reply structure.
+*/
+
+typedef struct BusLogic_BoardID
+{
+  unsigned char BoardType;
+  unsigned char CustomFeatures;
+  unsigned char FirmwareVersion1stDigit;
+  unsigned char FirmwareVersion2ndDigit;
+}
+BusLogic_BoardID_T;
+
+
+/*
+  Define the Inquire Installed Devices ID 0 to 7 and Inquire Installed
+  Devices ID 8 to 15 reply type.  For each Target ID, a byte is returned
+  where bit 0 set indicates that Logical Unit 0 exists, bit 1 set indicates
+  that Logical Unit 1 exists, and so on.
+*/
+
+typedef unsigned char BusLogic_InstalledDevices8_T[8];
+
+typedef unsigned char BusLogic_InstalledDevices_T[BusLogic_MaxTargetIDs];
+
+
+/*
+  Define the Inquire Configuration reply structure.
+*/
+
+typedef struct BusLogic_Configuration
+{
+  unsigned char :5;				/* Byte 0: DMA Channel */
+  boolean DMA_Channel5:1;
+  boolean DMA_Channel6:1;
+  boolean DMA_Channel7:1;
+  boolean IRQ_Channel9:1;			/* Byte 1: IRQ Channel */
+  boolean IRQ_Channel10:1;
+  boolean IRQ_Channel11:1;
+  boolean IRQ_Channel12:1;
+  unsigned char :1;
+  boolean IRQ_Channel14:1;
+  boolean IRQ_Channel15:1;
+  unsigned char :1;
+  unsigned char HostAdapterID:4;		/* Byte 2: Host Adapter ID */
+  unsigned char :4;
+}
+BusLogic_Configuration_T;
+
+
+/*
+  Define the Inquire Setup Information reply structure.
+*/
+
+typedef struct BusLogic_SynchronousValue
+{
+  unsigned char Offset:4;
+  unsigned char TransferPeriod:3;
+  boolean Synchronous:1;
+}
+BusLogic_SynchronousValue_T;
+
+typedef BusLogic_SynchronousValue_T
+  BusLogic_SynchronousValues8_T[8];
+
+typedef BusLogic_SynchronousValue_T
+  BusLogic_SynchronousValues_T[BusLogic_MaxTargetIDs];
+
+typedef struct BusLogic_SetupInformation
+{
+  boolean SynchronousInitiationEnabled:1;	/* Byte 0 */
+  boolean ParityCheckEnabled:1;
+  unsigned char :6;
+  unsigned char BusTransferRate;		/* Byte 1 */
+  unsigned char PreemptTimeOnBus;		/* Byte 2 */
+  unsigned char TimeOffBus;			/* Byte 3 */
+  unsigned char MailboxCount;			/* Byte 4 */
+  unsigned char MailboxAddress[3];		/* Bytes 5-7 */
+  BusLogic_SynchronousValues8_T SynchronousValuesID0to7; /* Bytes 8-15 */
+  unsigned char DisconnectPermittedID0to7;	/* Byte 16 */
+  unsigned char Signature;			/* Byte 17 */
+  unsigned char CharacterD;			/* Byte 18 */
+  unsigned char BusLetter;			/* Byte 19 */
+  unsigned char :8;				/* Byte 20 */
+  unsigned char :8;				/* Byte 21 */
+  BusLogic_SynchronousValues8_T SynchronousValuesID8to15; /* Bytes 22-29 */
+  unsigned char DisconnectPermittedID8to15;	/* Byte 30 */
+}
+BusLogic_SetupInformation_T;
+
+
+/*
+  Define the Initialize Extended Mailbox request structure.
+*/
+
+typedef struct BusLogic_ExtendedMailboxRequest
+{
+  unsigned char MailboxCount;
+  void *BaseMailboxAddress __attribute__ ((packed));
+}
+BusLogic_ExtendedMailboxRequest_T;
+
+
+/*
+  Define the Inquire Firmware Version 3rd Digit reply type.
+*/
+
+typedef unsigned char BusLogic_FirmwareVersion3rdDigit_T;
+
+
+/*
+  Define the Inquire Firmware Version Letter reply type.
+*/
+
+typedef unsigned char BusLogic_FirmwareVersionLetter_T;
+
+
+/*
+  Define the Inquire Board Model and Revision reply structure.
+*/
+
+typedef struct BusLogic_ModelAndRevision
+{
+  unsigned char Model[5];
+  unsigned char Revision;
+}
+BusLogic_ModelAndRevision_T;
+
+
+/*
+  Define the Inquire Synchronous Period reply type.  For each Target ID, a byte
+  is returned which represents the Synchronous Transfer Period in units of 10
+  nanoseconds.
+*/
+
+typedef unsigned char BusLogic_SynchronousPeriod_T[BusLogic_MaxTargetIDs];
+
+
+/*
+  Define the Inquire Extended Setup Information reply structure.
+*/
+
+typedef struct BusLogic_ExtendedSetupInformation
+{
+  unsigned char BusType;				/* Byte 0 */
+  unsigned char BIOS_Address;				/* Byte 1 */
+  unsigned short ScatterGatherLimit;			/* Bytes 2-3 */
+  unsigned char MailboxCount;				/* Byte 4 */
+  void *BaseMailboxAddress __attribute__ ((packed));	/* Bytes 5-8 */
+  struct { unsigned char :6;				/* Byte 9 */
+	   boolean LevelTriggeredInterrupts:1;
+	   unsigned char :1; } Misc;
+  unsigned char FirmwareRevision[3];			/* Bytes 10-12 */
+  boolean HostWideSCSI:1;				/* Byte 13 Bit 0 */
+  boolean HostDifferentialSCSI:1;			/* Byte 13 Bit 1 */
+  unsigned char :6;
+}
+BusLogic_ExtendedSetupInformation_T;
+
+
+/*
+  Define the Enable Strict Round Robin Mode request type.
+*/
+
+#define BusLogic_AggressiveRoundRobinMode	0x00
+#define BusLogic_StrictRoundRobinMode		0x01
+
+typedef unsigned char BusLogic_RoundRobinModeRequest_T;
+
+
+/*
+  Define the Modify I/O Address request type.  On PCI Host Adapters, the
+  Modify I/O Address command allows modification of the ISA compatible I/O
+  Address that the Host Adapter responds to; it does not affect the PCI
+  compliant I/O Address assigned at system initialization.
+*/
+
+#define BusLogic_ModifyIO_330			0x00
+#define BusLogic_ModifyIO_334			0x01
+#define BusLogic_ModifyIO_230			0x02
+#define BusLogic_ModifyIO_234			0x03
+#define BusLogic_ModifyIO_130			0x04
+#define BusLogic_ModifyIO_134			0x05
+#define BusLogic_ModifyIO_Disable		0x06
+#define BusLogic_ModifyIO_Disable2		0x07
+
+typedef unsigned char BusLogic_ModifyIOAddressRequest_T;
+
+
+/*
+  Define the Enable Wide Mode SCSI CCB request type.  Wide Mode CCBs are
+  necessary to support more than 8 Logical Units per Target.
+*/
+
+#define BusLogic_NormalModeCCB			0x00
+#define BusLogic_WideModeCCB			0x01
+
+typedef unsigned char BusLogic_WideModeCCBRequest_T;
+
+
+/*
+  Define the Requested Reply Length type used by the Inquire Setup Information,
+  Inquire Board Model and Revision, Inquire Synchronous Period, and Inquire
+  Extended Setup Information commands.
+*/
+
+typedef unsigned char BusLogic_RequestedReplyLength_T;
+
+
+/*
+  Define a Lock data structure.  Until a true symmetric multiprocessing kernel
+  is available, locking is implemented as saving the processor flags and
+  disabling interrupts, and unlocking restores the saved processor flags.
+*/
+
+typedef unsigned long BusLogic_Lock_T;
+
+
+/*
+  Define the Outgoing Mailbox Action Codes.
+*/
+
+typedef enum
+{
+  BusLogic_OutgoingMailboxFree =		0,
+  BusLogic_MailboxStartCommand =		1,
+  BusLogic_MailboxAbortCommand =		2
+}
+BusLogic_ActionCode_T;
+
+
+/*
+  Define the Incoming Mailbox Completion Codes.
+*/
+
+typedef enum
+{
+  BusLogic_IncomingMailboxFree =		0,
+  BusLogic_CommandCompletedWithoutError =	1,
+  BusLogic_CommandAbortedAtHostRequest =	2,
+  BusLogic_AbortedCommandNotFound =		3,
+  BusLogic_CommandCompletedWithError =		4
+}
+BusLogic_CompletionCode_T;
+
+
+/*
+  Define the Command Control Block (CCB) Opcodes.
+*/
+
+typedef enum
+{
+  BusLogic_InitiatorCCB =			0x00,
+  BusLogic_TargetCCB =				0x01,
+  BusLogic_InitiatorCCB_ScatterGather =		0x02,
+  BusLogic_InitiatorCCB_ResidualDataLength =	0x03,
+  BusLogic_InitiatorCCB_ScatterGatherResidual =	0x04,
+  BusLogic_SCSIBusDeviceReset =			0x81
+}
+BusLogic_CCB_Opcode_T;
+
+
+/*
+  Define the CCB Data Direction Codes.
+*/
+
+typedef enum
+{
+  BusLogic_UncheckedDataTransfer =		0x00,
+  BusLogic_DataInLengthChecked =		0x01,
+  BusLogic_DataOutLengthChecked =		0x02,
+  BusLogic_NoDataTransfer =			0x03
+}
+BusLogic_DataDirection_T;
+
+
+/*
+  Define the Host Adapter Status Codes.
+*/
+
+typedef enum
+{
+  BusLogic_CommandCompletedNormally =		0x00,
+  BusLogic_LinkedCommandCompleted =		0x0A,
+  BusLogic_LinkedCommandCompletedWithFlag =	0x0B,
+  BusLogic_SCSISelectionTimeout =		0x11,
+  BusLogic_DataOverUnderRun =			0x12,
+  BusLogic_UnexpectedBusFree =			0x13,
+  BusLogic_InvalidBusPhaseRequested =		0x14,
+  BusLogic_InvalidOutgoingMailboxActionCode =	0x15,
+  BusLogic_InvalidCommandOperationCode =	0x16,
+  BusLogic_LinkedCCBhasInvalidLUN =		0x17,
+  BusLogic_InvalidCommandParameter =		0x1A,
+  BusLogic_AutoRequestSenseFailed =		0x1B,
+  BusLogic_TaggedQueuingMessageRejected =	0x1C,
+  BusLogic_UnsupportedMessageReceived =		0x1D,
+  BusLogic_HostAdapterHardwareFailed =		0x20,
+  BusLogic_TargetFailedResponseToATN =		0x21,
+  BusLogic_HostAdapterAssertedRST =		0x22,
+  BusLogic_OtherDeviceAssertedRST =		0x23,
+  BusLogic_TargetDeviceReconnectedImproperly =	0x24,
+  BusLogic_HostAdapterAssertedBusDeviceReset =	0x25,
+  BusLogic_AbortQueueGenerated =		0x26,
+  BusLogic_HostAdapterSoftwareError =		0x27,
+  BusLogic_HostAdapterHardwareTimeoutError =	0x30,
+  BusLogic_SCSIParityErrorDetected =		0x34
+}
+BusLogic_HostAdapterStatus_T;
+
+
+/*
+  Define the SCSI Target Device Status Codes.
+*/
+
+typedef enum
+{
+  BusLogic_OperationGood =			0x00,
+  BusLogic_CheckCondition =			0x02,
+  BusLogic_DeviceBusy =				0x08
+}
+BusLogic_TargetDeviceStatus_T;
+
+
+/*
+  Define the Queue Tag Codes.
+*/
+
+typedef enum
+{
+  BusLogic_SimpleQueueTag =			0x00,
+  BusLogic_HeadOfQueueTag =			0x01,
+  BusLogic_OrderedQueueTag =			0x02,
+  BusLogic_ReservedQT =				0x03
+}
+BusLogic_QueueTag_T;
+
+
+/*
+  Define the SCSI Command Descriptor Block (CDB).
+*/
+
+#define BusLogic_CDB_MaxLength			12
+
+typedef unsigned char SCSI_CDB_T[BusLogic_CDB_MaxLength];
+
+
+/*
+  Define the SCSI Sense Data.
+*/
+
+#define BusLogic_SenseDataMaxLength		255
+
+typedef unsigned char SCSI_SenseData_T[BusLogic_SenseDataMaxLength];
+
+
+/*
+  Define the Scatter/Gather Segment structure required by the Host Adapter
+  Firmware Interface.
+*/
+
+typedef struct BusLogic_ScatterGatherSegment
+{
+  unsigned long SegmentByteCount;
+  void *SegmentDataPointer;
+}
+BusLogic_ScatterGatherSegment_T;
+
+
+/*
+  Define the 32 Bit Mode Command Control Block (CCB) structure.  The first 40
+  bytes are defined by the Host Adapter Firmware Interface.  The remaining
+  components are defined by the Linux BusLogic Driver.  Wide Mode CCBs differ
+  from standard 32 Bit Mode CCBs only in having the TagEnable and QueueTag
+  fields moved from byte 17 to byte 1, and the Logical Unit field in byte 17
+  expanded to 6 bits; unfortunately, using a union of structs containing
+  enumeration type bitfields to provide both definitions leads to packing
+  problems, so the following definition is used which requires setting
+  TagEnable to Logical Unit bit 5 in Wide Mode CCBs.
+*/
+
+typedef struct BusLogic_CCB
+{
+  /*
+    BusLogic Host Adapter Firmware Portion.
+  */
+  BusLogic_CCB_Opcode_T Opcode:8;			/* Byte 0 */
+  unsigned char :3;					/* Byte 1 Bits 0-2 */
+  BusLogic_DataDirection_T DataDirection:2;		/* Byte 1 Bits 3-4 */
+  boolean WideModeTagEnable:1;				/* Byte 1 Bit 5 */
+  BusLogic_QueueTag_T WideModeQueueTag:2;		/* Byte 1 Bits 6-7 */
+  unsigned char CDB_Length;				/* Byte 2 */
+  unsigned char SenseDataLength;			/* Byte 3 */
+  unsigned long DataLength;				/* Bytes 4-7 */
+  void *DataPointer;					/* Bytes 8-11 */
+  unsigned char :8;					/* Byte 12 */
+  unsigned char :8;					/* Byte 13 */
+  BusLogic_HostAdapterStatus_T HostAdapterStatus:8;	/* Byte 14 */
+  BusLogic_TargetDeviceStatus_T TargetDeviceStatus:8;	/* Byte 15 */
+  unsigned char TargetID;				/* Byte 16 */
+  unsigned char LogicalUnit:5;				/* Byte 17 Bits 0-2 */
+  boolean TagEnable:1;					/* Byte 17 Bit 5 */
+  BusLogic_QueueTag_T QueueTag:2;			/* Byte 17 Bits 6-7 */
+  SCSI_CDB_T CDB;					/* Bytes 18-29 */
+  unsigned char :8;					/* Byte 30 */
+  unsigned char :8;					/* Byte 31 */
+  unsigned long :32;					/* Bytes 32-35 */
+  SCSI_SenseData_T *SenseDataPointer;			/* Bytes 36-39 */
+  /*
+    BusLogic Linux Driver Portion.
+  */
+  struct BusLogic_HostAdapter *HostAdapter;
+  SCSI_Command_T *Command;
+  enum { BusLogic_CCB_Free =	    0,
+	 BusLogic_CCB_Active =	    1,
+	 BusLogic_CCB_Completed =   2 } Status;
+  BusLogic_CompletionCode_T MailboxCompletionCode;
+  unsigned int SerialNumber;
+  struct BusLogic_CCB *Next;
+  struct BusLogic_CCB *NextAll;
+  BusLogic_ScatterGatherSegment_T
+    ScatterGatherList[BusLogic_ScatterGatherLimit];
+}
+BusLogic_CCB_T;
+
+
+/*
+  Define the 32 Bit Mode Outgoing Mailbox structure.
+*/
+
+typedef struct BusLogic_OutgoingMailbox
+{
+  BusLogic_CCB_T *CCB;
+  unsigned long :24;
+  BusLogic_ActionCode_T ActionCode:8;
+}
+BusLogic_OutgoingMailbox_T;
+
+
+/*
+  Define the 32 Bit Mode Incoming Mailbox structure.
+*/
+
+typedef struct BusLogic_IncomingMailbox
+{
+  BusLogic_CCB_T *CCB;
+  BusLogic_HostAdapterStatus_T HostAdapterStatus:8;
+  BusLogic_TargetDeviceStatus_T TargetDeviceStatus:8;
+  unsigned char :8;
+  BusLogic_CompletionCode_T CompletionCode:8;
+}
+BusLogic_IncomingMailbox_T;
+
+
+/*
+  Define the possible Bus Types.
+*/
+
+typedef enum
+{
+  BusLogic_Unknown_Bus =			0,
+  BusLogic_ISA_Bus =				1,
+  BusLogic_MCA_Bus =				2,
+  BusLogic_EISA_Bus =				3,
+  BusLogic_VESA_Bus =				4,
+  BusLogic_PCI_Bus =				5
+}
+BusLogic_BusType_T;
+
+static char
+  *BusLogic_BusNames[] =
+    { "Unknown", "ISA", "MCA", "EISA", "VESA", "PCI" };
+
+
+/*
+  Define the Linux BusLogic Driver Command Line Entry structure.
+*/
+
+typedef struct BusLogic_CommandLineEntry
+{
+  unsigned short IO_Address;
+  unsigned short Concurrency;
+  unsigned short BusSettleTime;
+  unsigned short TaggedQueuingPermitted;
+  unsigned short TaggedQueuingPermittedMask;
+  unsigned char ErrorRecoveryOption[BusLogic_MaxTargetIDs];
+}
+BusLogic_CommandLineEntry_T;
+
+
+/*
+  Define the Linux BusLogic Driver Host Adapter structure.
+*/
+
+typedef struct BusLogic_HostAdapter
+{
+  SCSI_Host_T *SCSI_Host;
+  unsigned char HostNumber;
+  unsigned char ModelName[6];
+  unsigned char FirmwareVersion[6];
+  unsigned char BoardName[15];
+  unsigned char InterruptLabel[63];
+  unsigned short IO_Address;
+  unsigned char IRQ_Channel;
+  unsigned char DMA_Channel;
+  unsigned char SCSI_ID;
+  BusLogic_BusType_T BusType:3;
+  boolean IRQ_ChannelAcquired:1;
+  boolean DMA_ChannelAcquired:1;
+  boolean SynchronousInitiation:1;
+  boolean ParityChecking:1;
+  boolean ExtendedTranslation:1;
+  boolean LevelTriggeredInterrupts:1;
+  boolean HostWideSCSI:1;
+  boolean HostDifferentialSCSI:1;
+  boolean HostAdapterResetPending:1;
+  volatile boolean HostAdapterCommandCompleted:1;
+  unsigned short HostAdapterScatterGatherLimit;
+  unsigned short DriverScatterGatherLimit;
+  unsigned short MaxTargetIDs;
+  unsigned short MaxLogicalUnits;
+  unsigned short Concurrency;
+  unsigned short BusSettleTime;
+  unsigned short DisconnectPermitted;
+  unsigned short TaggedQueuingPermitted;
+  unsigned long BIOS_Address;
+  BusLogic_InstalledDevices_T InstalledDevices;
+  BusLogic_SynchronousValues_T SynchronousValues;
+  BusLogic_SynchronousPeriod_T SynchronousPeriod;
+  BusLogic_Lock_T Lock;
+  struct BusLogic_HostAdapter *Next;
+  BusLogic_CommandLineEntry_T *CommandLineEntry;
+  BusLogic_CCB_T *All_CCBs;
+  BusLogic_CCB_T *Free_CCBs;
+  unsigned char ErrorRecoveryOption[BusLogic_MaxTargetIDs];
+  unsigned char CommandSuccessfulFlag[BusLogic_MaxTargetIDs];
+  unsigned long ReadWriteOperationCount[BusLogic_MaxTargetIDs];
+  BusLogic_OutgoingMailbox_T *FirstOutgoingMailbox;
+  BusLogic_OutgoingMailbox_T *LastOutgoingMailbox;
+  BusLogic_OutgoingMailbox_T *NextOutgoingMailbox;
+  BusLogic_IncomingMailbox_T *FirstIncomingMailbox;
+  BusLogic_IncomingMailbox_T *LastIncomingMailbox;
+  BusLogic_IncomingMailbox_T *NextIncomingMailbox;
+  BusLogic_OutgoingMailbox_T OutgoingMailboxes[BusLogic_MailboxCount];
+  BusLogic_IncomingMailbox_T IncomingMailboxes[BusLogic_MailboxCount];
+}
+BusLogic_HostAdapter_T;
+
+
+/*
+  Define a symbolic structure for the BIOS Disk Parameters.
+*/
+
+typedef struct BIOS_DiskParameters
+{
+  int Heads;
+  int Sectors;
+  int Cylinders;
+}
+BIOS_DiskParameters_T;
+
+
+/*
+  BusLogic_LockHostAdapter acquires exclusive access to Host Adapter.
+*/
+
+static inline
+void BusLogic_LockHostAdapter(BusLogic_HostAdapter_T *HostAdapter)
+{
+  save_flags(HostAdapter->Lock);
+  cli();
+}
+
+
+/*
+  BusLogic_UnlockHostAdapter releases exclusive access to Host Adapter.
+*/
+
+static inline
+void BusLogic_UnlockHostAdapter(BusLogic_HostAdapter_T *HostAdapter)
+{
+  restore_flags(HostAdapter->Lock);
+}
+
+
+/*
+  BusLogic_LockHostAdapterID acquires exclusive access to Host Adapter,
+  but is only called when interrupts are disabled.
+*/
+
+static inline
+void BusLogic_LockHostAdapterID(BusLogic_HostAdapter_T *HostAdapter)
+{
+}
+
+
+/*
+  BusLogic_UnlockHostAdapterID releases exclusive access to Host Adapter,
+  but is only called when interrupts are disabled.
+*/
+
+static inline
+void BusLogic_UnlockHostAdapterID(BusLogic_HostAdapter_T *HostAdapter)
+{
+}
+
+
+/*
+  Define functions to provide an abstraction for reading and writing the
+  Host Adapter I/O Registers.
+*/
+
+static inline
+void BusLogic_WriteControlRegister(BusLogic_HostAdapter_T *HostAdapter,
+				   unsigned char Value)
+{
+  outb(Value, HostAdapter->IO_Address + BusLogic_ControlRegister);
+}
+
+static inline
+unsigned char BusLogic_ReadStatusRegister(BusLogic_HostAdapter_T *HostAdapter)
+{
+  return inb(HostAdapter->IO_Address + BusLogic_StatusRegister);
+}
+
+static inline
+void BusLogic_WriteCommandParameterRegister(BusLogic_HostAdapter_T *HostAdapter,
+					    unsigned char Value)
+{
+  outb(Value, HostAdapter->IO_Address + BusLogic_CommandParameterRegister);
+}
+
+static inline
+unsigned char BusLogic_ReadDataInRegister(BusLogic_HostAdapter_T *HostAdapter)
+{
+  return inb(HostAdapter->IO_Address + BusLogic_DataInRegister);
+}
+
+static inline
+unsigned char BusLogic_ReadInterruptRegister(BusLogic_HostAdapter_T
+					     *HostAdapter)
+{
+  return inb(HostAdapter->IO_Address + BusLogic_InterruptRegister);
+}
+
+static inline
+unsigned char BusLogic_ReadGeometryRegister(BusLogic_HostAdapter_T *HostAdapter)
+{
+  return inb(HostAdapter->IO_Address + BusLogic_GeometryRegister);
+}
+
+
+/*
+  BusLogic_StartMailboxScan issues a Start Mailbox Scan command, which
+  notifies the Host Adapter that an entry has been made in an Outgoing
+  Mailbox.
+*/
+
+static inline
+void BusLogic_StartMailboxScan(BusLogic_HostAdapter_T *HostAdapter)
+{
+  BusLogic_WriteCommandParameterRegister(HostAdapter,
+					 BusLogic_StartMailboxCommand);
+}
+
+
+/*
+  BusLogic_Delay waits for Seconds to elapse.  It must be called with
+  interrupts enabled so that jiffies is updated.
+*/
+
+static inline void BusLogic_Delay(int Seconds)
+{
+  unsigned long TimeoutJiffies = jiffies + Seconds * HZ;
+  while (jiffies < TimeoutJiffies) ;
+}
+
+
+/*
+  Define prototypes for the forward referenced BusLogic Driver
+  Internal Functions.
+*/
+
+static void BusLogic_InterruptHandler(int, Registers_T *);
+static int BusLogic_ResetHostAdapter(BusLogic_HostAdapter_T *,
+				     SCSI_Command_T *);
+
+
+#endif /* BusLogic_DriverVersion */
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen, slshen@lbl.gov with Sam's (original) version
of this