buslogic.c

linux 内核源代码

		TargetPointer = HostAdapter->ModelName;
		*TargetPointer++ = 'B';
		*TargetPointer++ = 'T';
		*TargetPointer++ = '-';
		for (i = 0; i < sizeof(FlashPointInfo->ModelNumber); i++)
			*TargetPointer++ = FlashPointInfo->ModelNumber[i];
		*TargetPointer++ = '\0';
		strcpy(HostAdapter->FirmwareVersion, FlashPoint_FirmwareVersion);
		HostAdapter->SCSI_ID = FlashPointInfo->SCSI_ID;
		HostAdapter->ExtendedTranslationEnabled = FlashPointInfo->ExtendedTranslationEnabled;
		HostAdapter->ParityCheckingEnabled = FlashPointInfo->ParityCheckingEnabled;
		HostAdapter->BusResetEnabled = !FlashPointInfo->HostSoftReset;
		HostAdapter->LevelSensitiveInterrupt = true;
		HostAdapter->HostWideSCSI = FlashPointInfo->HostWideSCSI;
		HostAdapter->HostDifferentialSCSI = false;
		HostAdapter->HostSupportsSCAM = true;
		HostAdapter->HostUltraSCSI = true;
		HostAdapter->ExtendedLUNSupport = true;
		HostAdapter->TerminationInfoValid = true;
		HostAdapter->LowByteTerminated = FlashPointInfo->LowByteTerminated;
		HostAdapter->HighByteTerminated = FlashPointInfo->HighByteTerminated;
		HostAdapter->SCAM_Enabled = FlashPointInfo->SCAM_Enabled;
		HostAdapter->SCAM_Level2 = FlashPointInfo->SCAM_Level2;
		HostAdapter->DriverScatterGatherLimit = BusLogic_ScatterGatherLimit;
		HostAdapter->MaxTargetDevices = (HostAdapter->HostWideSCSI ? 16 : 8);
		HostAdapter->MaxLogicalUnits = 32;
		HostAdapter->InitialCCBs = 4 * BusLogic_CCB_AllocationGroupSize;
		HostAdapter->IncrementalCCBs = BusLogic_CCB_AllocationGroupSize;
		HostAdapter->DriverQueueDepth = 255;
		HostAdapter->HostAdapterQueueDepth = HostAdapter->DriverQueueDepth;
		HostAdapter->SynchronousPermitted = FlashPointInfo->SynchronousPermitted;
		HostAdapter->FastPermitted = FlashPointInfo->FastPermitted;
		HostAdapter->UltraPermitted = FlashPointInfo->UltraPermitted;
		HostAdapter->WidePermitted = FlashPointInfo->WidePermitted;
		HostAdapter->DisconnectPermitted = FlashPointInfo->DisconnectPermitted;
		HostAdapter->TaggedQueuingPermitted = 0xFFFF;
		goto Common;
	}
	/*
	   Issue the Inquire Board ID command.
	 */
	if (BusLogic_Command(HostAdapter, BusLogic_InquireBoardID, NULL, 0, &BoardID, sizeof(BoardID)) != sizeof(BoardID))
		return BusLogic_Failure(HostAdapter, "INQUIRE BOARD ID");
	/*
	   Issue the Inquire Configuration command.
	 */
	if (BusLogic_Command(HostAdapter, BusLogic_InquireConfiguration, NULL, 0, &Configuration, sizeof(Configuration))
	    != sizeof(Configuration))
		return BusLogic_Failure(HostAdapter, "INQUIRE CONFIGURATION");
	/*
	   Issue the Inquire Setup Information command.
	 */
	RequestedReplyLength = sizeof(SetupInformation);
	if (BusLogic_Command(HostAdapter, BusLogic_InquireSetupInformation, &RequestedReplyLength, sizeof(RequestedReplyLength), &SetupInformation, sizeof(SetupInformation))
	    != sizeof(SetupInformation))
		return BusLogic_Failure(HostAdapter, "INQUIRE SETUP INFORMATION");
	/*
	   Issue the Inquire Extended Setup Information command.
	 */
	RequestedReplyLength = sizeof(ExtendedSetupInformation);
	if (BusLogic_Command(HostAdapter, BusLogic_InquireExtendedSetupInformation, &RequestedReplyLength, sizeof(RequestedReplyLength), &ExtendedSetupInformation, sizeof(ExtendedSetupInformation))
	    != sizeof(ExtendedSetupInformation))
		return BusLogic_Failure(HostAdapter, "INQUIRE EXTENDED SETUP INFORMATION");
	/*
	   Issue the Inquire Firmware Version 3rd Digit command.
	 */
	FirmwareVersion3rdDigit = '\0';
	if (BoardID.FirmwareVersion1stDigit > '0')
		if (BusLogic_Command(HostAdapter, BusLogic_InquireFirmwareVersion3rdDigit, NULL, 0, &FirmwareVersion3rdDigit, sizeof(FirmwareVersion3rdDigit))
		    != sizeof(FirmwareVersion3rdDigit))
			return BusLogic_Failure(HostAdapter, "INQUIRE FIRMWARE 3RD DIGIT");
	/*
	   Issue the Inquire Host Adapter Model Number command.
	 */
	if (ExtendedSetupInformation.BusType == 'A' && BoardID.FirmwareVersion1stDigit == '2')
		/* BusLogic BT-542B ISA 2.xx */
		strcpy(HostAdapterModelNumber, "542B");
	else if (ExtendedSetupInformation.BusType == 'E' && BoardID.FirmwareVersion1stDigit == '2' && (BoardID.FirmwareVersion2ndDigit <= '1' || (BoardID.FirmwareVersion2ndDigit == '2' && FirmwareVersion3rdDigit == '0')))
		/* BusLogic BT-742A EISA 2.1x or 2.20 */
		strcpy(HostAdapterModelNumber, "742A");
	else if (ExtendedSetupInformation.BusType == 'E' && BoardID.FirmwareVersion1stDigit == '0')
		/* AMI FastDisk EISA Series 441 0.x */
		strcpy(HostAdapterModelNumber, "747A");
	else {
		RequestedReplyLength = sizeof(HostAdapterModelNumber);
		if (BusLogic_Command(HostAdapter, BusLogic_InquireHostAdapterModelNumber, &RequestedReplyLength, sizeof(RequestedReplyLength), &HostAdapterModelNumber, sizeof(HostAdapterModelNumber))
		    != sizeof(HostAdapterModelNumber))
			return BusLogic_Failure(HostAdapter, "INQUIRE HOST ADAPTER MODEL NUMBER");
	}
	/*
	   BusLogic MultiMaster Host Adapters can be identified by their model number
	   and the major version number of their firmware as follows:

	   5.xx       BusLogic "W" Series Host Adapters:
	   BT-948/958/958D
	   4.xx       BusLogic "C" Series Host Adapters:
	   BT-946C/956C/956CD/747C/757C/757CD/445C/545C/540CF
	   3.xx       BusLogic "S" Series Host Adapters:
	   BT-747S/747D/757S/757D/445S/545S/542D
	   BT-542B/742A (revision H)
	   2.xx       BusLogic "A" Series Host Adapters:
	   BT-542B/742A (revision G and below)
	   0.xx       AMI FastDisk VLB/EISA BusLogic Clone Host Adapter
	 */
	/*
	   Save the Model Name and Host Adapter Name in the Host Adapter structure.
	 */
	TargetPointer = HostAdapter->ModelName;
	*TargetPointer++ = 'B';
	*TargetPointer++ = 'T';
	*TargetPointer++ = '-';
	for (i = 0; i < sizeof(HostAdapterModelNumber); i++) {
		Character = HostAdapterModelNumber[i];
		if (Character == ' ' || Character == '\0')
			break;
		*TargetPointer++ = Character;
	}
	*TargetPointer++ = '\0';
	/*
	   Save the Firmware Version in the Host Adapter structure.
	 */
	TargetPointer = HostAdapter->FirmwareVersion;
	*TargetPointer++ = BoardID.FirmwareVersion1stDigit;
	*TargetPointer++ = '.';
	*TargetPointer++ = BoardID.FirmwareVersion2ndDigit;
	if (FirmwareVersion3rdDigit != ' ' && FirmwareVersion3rdDigit != '\0')
		*TargetPointer++ = FirmwareVersion3rdDigit;
	*TargetPointer = '\0';
	/*
	   Issue the Inquire Firmware Version Letter command.
	 */
	if (strcmp(HostAdapter->FirmwareVersion, "3.3") >= 0) {
		if (BusLogic_Command(HostAdapter, BusLogic_InquireFirmwareVersionLetter, NULL, 0, &FirmwareVersionLetter, sizeof(FirmwareVersionLetter))
		    != sizeof(FirmwareVersionLetter))
			return BusLogic_Failure(HostAdapter, "INQUIRE FIRMWARE VERSION LETTER");
		if (FirmwareVersionLetter != ' ' && FirmwareVersionLetter != '\0')
			*TargetPointer++ = FirmwareVersionLetter;
		*TargetPointer = '\0';
	}
	/*
	   Save the Host Adapter SCSI ID in the Host Adapter structure.
	 */
	HostAdapter->SCSI_ID = Configuration.HostAdapterID;
	/*
	   Determine the Bus Type and save it in the Host Adapter structure, determine
	   and save the IRQ Channel if necessary, and determine and save the DMA
	   Channel for ISA Host Adapters.
	 */
	HostAdapter->HostAdapterBusType = BusLogic_HostAdapterBusTypes[HostAdapter->ModelName[3] - '4'];
	if (HostAdapter->IRQ_Channel == 0) {
		if (Configuration.IRQ_Channel9)
			HostAdapter->IRQ_Channel = 9;
		else if (Configuration.IRQ_Channel10)
			HostAdapter->IRQ_Channel = 10;
		else if (Configuration.IRQ_Channel11)
			HostAdapter->IRQ_Channel = 11;
		else if (Configuration.IRQ_Channel12)
			HostAdapter->IRQ_Channel = 12;
		else if (Configuration.IRQ_Channel14)
			HostAdapter->IRQ_Channel = 14;
		else if (Configuration.IRQ_Channel15)
			HostAdapter->IRQ_Channel = 15;
	}
	if (HostAdapter->HostAdapterBusType == BusLogic_ISA_Bus) {
		if (Configuration.DMA_Channel5)
			HostAdapter->DMA_Channel = 5;
		else if (Configuration.DMA_Channel6)
			HostAdapter->DMA_Channel = 6;
		else if (Configuration.DMA_Channel7)
			HostAdapter->DMA_Channel = 7;
	}
	/*
	   Determine whether Extended Translation is enabled and save it in
	   the Host Adapter structure.
	 */
	GeometryRegister.All = BusLogic_ReadGeometryRegister(HostAdapter);
	HostAdapter->ExtendedTranslationEnabled = GeometryRegister.gr.ExtendedTranslationEnabled;
	/*
	   Save the Scatter Gather Limits, Level Sensitive Interrupt flag, Wide
	   SCSI flag, Differential SCSI flag, SCAM Supported flag, and
	   Ultra SCSI flag in the Host Adapter structure.
	 */
	HostAdapter->HostAdapterScatterGatherLimit = ExtendedSetupInformation.ScatterGatherLimit;
	HostAdapter->DriverScatterGatherLimit = HostAdapter->HostAdapterScatterGatherLimit;
	if (HostAdapter->HostAdapterScatterGatherLimit > BusLogic_ScatterGatherLimit)
		HostAdapter->DriverScatterGatherLimit = BusLogic_ScatterGatherLimit;
	if (ExtendedSetupInformation.Misc.LevelSensitiveInterrupt)
		HostAdapter->LevelSensitiveInterrupt = true;
	HostAdapter->HostWideSCSI = ExtendedSetupInformation.HostWideSCSI;
	HostAdapter->HostDifferentialSCSI = ExtendedSetupInformation.HostDifferentialSCSI;
	HostAdapter->HostSupportsSCAM = ExtendedSetupInformation.HostSupportsSCAM;
	HostAdapter->HostUltraSCSI = ExtendedSetupInformation.HostUltraSCSI;
	/*
	   Determine whether Extended LUN Format CCBs are supported and save the
	   information in the Host Adapter structure.
	 */
	if (HostAdapter->FirmwareVersion[0] == '5' || (HostAdapter->FirmwareVersion[0] == '4' && HostAdapter->HostWideSCSI))
		HostAdapter->ExtendedLUNSupport = true;
	/*
	   Issue the Inquire PCI Host Adapter Information command to read the
	   Termination Information from "W" series MultiMaster Host Adapters.
	 */
	if (HostAdapter->FirmwareVersion[0] == '5') {
		if (BusLogic_Command(HostAdapter, BusLogic_InquirePCIHostAdapterInformation, NULL, 0, &PCIHostAdapterInformation, sizeof(PCIHostAdapterInformation))
		    != sizeof(PCIHostAdapterInformation))
			return BusLogic_Failure(HostAdapter, "INQUIRE PCI HOST ADAPTER INFORMATION");
		/*
		   Save the Termination Information in the Host Adapter structure.
		 */
		if (PCIHostAdapterInformation.GenericInfoValid) {
			HostAdapter->TerminationInfoValid = true;
			HostAdapter->LowByteTerminated = PCIHostAdapterInformation.LowByteTerminated;
			HostAdapter->HighByteTerminated = PCIHostAdapterInformation.HighByteTerminated;
		}
	}
	/*
	   Issue the Fetch Host Adapter Local RAM command to read the AutoSCSI data
	   from "W" and "C" series MultiMaster Host Adapters.
	 */
	if (HostAdapter->FirmwareVersion[0] >= '4') {
		FetchHostAdapterLocalRAMRequest.ByteOffset = BusLogic_AutoSCSI_BaseOffset;
		FetchHostAdapterLocalRAMRequest.ByteCount = sizeof(AutoSCSIData);
		if (BusLogic_Command(HostAdapter, BusLogic_FetchHostAdapterLocalRAM, &FetchHostAdapterLocalRAMRequest, sizeof(FetchHostAdapterLocalRAMRequest), &AutoSCSIData, sizeof(AutoSCSIData))
		    != sizeof(AutoSCSIData))
			return BusLogic_Failure(HostAdapter, "FETCH HOST ADAPTER LOCAL RAM");
		/*
		   Save the Parity Checking Enabled, Bus Reset Enabled, and Termination
		   Information in the Host Adapter structure.
		 */
		HostAdapter->ParityCheckingEnabled = AutoSCSIData.ParityCheckingEnabled;
		HostAdapter->BusResetEnabled = AutoSCSIData.BusResetEnabled;
		if (HostAdapter->FirmwareVersion[0] == '4') {
			HostAdapter->TerminationInfoValid = true;
			HostAdapter->LowByteTerminated = AutoSCSIData.LowByteTerminated;
			HostAdapter->HighByteTerminated = AutoSCSIData.HighByteTerminated;
		}
		/*
		   Save the Wide Permitted, Fast Permitted, Synchronous Permitted,
		   Disconnect Permitted, Ultra Permitted, and SCAM Information in the
		   Host Adapter structure.
		 */
		HostAdapter->WidePermitted = AutoSCSIData.WidePermitted;
		HostAdapter->FastPermitted = AutoSCSIData.FastPermitted;
		HostAdapter->SynchronousPermitted = AutoSCSIData.SynchronousPermitted;
		HostAdapter->DisconnectPermitted = AutoSCSIData.DisconnectPermitted;
		if (HostAdapter->HostUltraSCSI)
			HostAdapter->UltraPermitted = AutoSCSIData.UltraPermitted;
		if (HostAdapter->HostSupportsSCAM) {
			HostAdapter->SCAM_Enabled = AutoSCSIData.SCAM_Enabled;
			HostAdapter->SCAM_Level2 = AutoSCSIData.SCAM_Level2;
		}
	}
	/*
	   Initialize fields in the Host Adapter structure for "S" and "A" series
	   MultiMaster Host Adapters.
	 */
	if (HostAdapter->FirmwareVersion[0] < '4') {
		if (SetupInformation.SynchronousInitiationEnabled) {
			HostAdapter->SynchronousPermitted = 0xFF;
			if (HostAdapter->HostAdapterBusType == BusLogic_EISA_Bus) {
				if (ExtendedSetupInformation.Misc.FastOnEISA)
					HostAdapter->FastPermitted = 0xFF;
				if (strcmp(HostAdapter->ModelName, "BT-757") == 0)
					HostAdapter->WidePermitted = 0xFF;
			}
		}
		HostAdapter->DisconnectPermitted = 0xFF;
		HostAdapter->ParityCheckingEnabled = SetupInformation.ParityCheckingEnabled;
		HostAdapter->BusResetEnabled = true;
	}
	/*
	   Determine the maximum number of Target IDs and Logical Units supported by
	   this driver for Wide and Narrow Host Adapters.
	 */
	HostAdapter->MaxTargetDevices = (HostAdapter->HostWideSCSI ? 16 : 8);
	HostAdapter->MaxLogicalUnits = (HostAdapter->ExtendedLUNSupport ? 32 : 8);
	/*
	   Select appropriate values for the Mailbox Count, Driver Queue Depth,
	   Initial CCBs, and Incremental CCBs variables based on whether or not Strict
	   Round Robin Mode is supported.  If Strict Round Robin Mode is supported,
	   then there is no performance degradation in using the maximum possible
	   number of Outgoing and Incoming Mailboxes and allowing the Tagged and
	   Untagged Queue Depths to determine the actual utilization.  If Strict Round
	   Robin Mode is not supported, then the Host Adapter must scan all the
	   Outgoing Mailboxes whenever an Outgoing Mailbox entry is made, which can
	   cause a substantial performance penalty.  The host adapters actually have
	   room to store the following number of CCBs internally; that is, they can
	   internally queue and manage this many active commands on the SCSI bus
	   simultaneously.  Performance measurements demonstrate that the Driver Queue
	   Depth should be set to the Mailbox Count, rather than the Host Adapter
	   Queue Depth (internal CCB capacity), as it is more efficient to have the
	   queued commands waiting in Outgoing Mailboxes if necessary than to block
	   the process in the higher levels of the SCSI Subsystem.

	   192          BT-948/958/958D
	   100          BT-946C/956C/956CD/747C/757C/757CD/445C
	   50   BT-545C/540CF
	   30   BT-747S/747D/757S/757D/445S/545S/542D/542B/742A
	 */
	if (HostAdapter->FirmwareVersion[0] == '5')
		HostAdapter->HostAdapterQueueDepth = 192;
	else if (HostAdapter->FirmwareVersion[0] == '4')
		HostAdapter->HostAdapterQueueDepth = (HostAdapter->HostAdapterBusType != BusLogic_ISA_Bus ? 100 : 50);
	else
		HostAdapter->HostAdapterQueueDepth = 30;
	if (strcmp(HostAdapter->FirmwareVersion, "3.31") >= 0) {
		HostAdapter->StrictRoundRobinModeSupport = true;
		HostAdapter->MailboxCount = BusLogic_MaxMailboxes;
	} else {
		HostAdapter->StrictRoundRobinModeSupport = false;
		HostAdapter->MailboxCount = 32;
	}
	HostAdapter->DriverQueueDepth = HostAdapter->MailboxCount;
	HostAdapter->InitialCCBs = 4 * BusLogic_CCB_AllocationGroupSize;
	HostAdapter->IncrementalCCBs = BusLogic_CCB_AllocationGroupSize;
	/*
	   Tagged Qu