buslogic958.c

来自「ReactOS是一些高手根据Windows XP的内核编写出的类XP。内核实现机」· C语言 代码 · 共 1,558 行 · 第 1/5 页

                       sizeof(RequestedReplyLength),
                       &HostAdapterModelNumber,
                       sizeof(HostAdapterModelNumber))
      != sizeof(HostAdapterModelNumber))
  {
      DebugPrint((ERROR, "\n BusLogic - Failure: INQUIRE HOST ADAPTER MODEL NUMBER\n"));
      return FALSE;
  }
  
  //  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
  //  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((char*)HostAdapter->FirmwareVersion, "3.3") >= 0)
  {
      if (BusLogic_Command(HostAdapter,
                           BusLogic_InquireFirmwareVersionLetter,
                           NULL,
                           0,
                           &FirmwareVersionLetter,
                           sizeof(FirmwareVersionLetter))
          != sizeof(FirmwareVersionLetter))
      {
          DebugPrint((ERROR, "\n BusLogic - Failure: INQUIRE FIRMWARE VERSION LETTER\n"));
          return FALSE;
      }
      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'];
    
  GeometryRegister.All = BusLogic_ReadGeometryRegister(HostAdapter);
  
  //  Determine whether Extended Translation is enabled and save it in
  //  the Host Adapter structure.
  //  HostAdapter->ExtendedTranslationEnabled =  GeometryRegister.Bits.ExtendedTranslationEnabled;
  HostAdapter->ExtendedTranslationEnabled =  GeometryRegister.All;
  
  
  //  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))
      {
          DebugPrint((ERROR, "\n BusLogic - Failure: INQUIRE PCI HOST ADAPTER INFORMATION\n"));
          return FALSE; 
      }

       // 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))
      {
          DebugPrint((ERROR, "\n BusLogic - Failure: FETCH HOST ADAPTER LOCAL RAM\n"));
          return FALSE;
      }
      // Save the Parity Checking Enabled, Bus Reset Enabled, and Termination
      // Information in the Host Adapter structure.
      HostAdapter->ParityCheckingEnabled = AutoSCSIData.ParityCheckingEnabled;
      HostAdapter->BusResetEnabled = AutoSCSIData.BusResetEnabled;
      
      // 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;
      }
    }   
    
    // 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, 
    // 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
    if (HostAdapter->FirmwareVersion[0] == '5')
    {
        HostAdapter->HostAdapterQueueDepth = 192;
    }
    
    if (strcmp((char*)HostAdapter->FirmwareVersion, "3.31") >= 0)
    {
      HostAdapter->StrictRoundRobinModeSupport = TRUE;
      HostAdapter->MailboxCount = BusLogic_MaxMailboxes;
    }
    
    //
    // Tagged Queuing support is available and operates properly on all "W" series
    // MultiMaster Host Adapters, on "C" series MultiMaster Host Adapters with
    // firmware version 4.22 and above, and on "S" series MultiMaster Host
    // Adapters with firmware version 3.35 and above.
    HostAdapter->TaggedQueuingPermitted = 0xFFFF;
    
    //
    // Determine the Host Adapter BIOS Address if the BIOS is enabled and
    ///save it in the Host Adapter structure.  The BIOS is disabled if the
    // BIOS_Address is 0.
    HostAdapter->BIOS_Address = ExtendedSetupInformation.BIOS_Address << 12;
    
    //
    //Initialize parameters for MultiMaster Host Adapters.

    //
    // Initialize the Host Adapter Full Model Name from the Model Name.
    strcpy((char*)HostAdapter->FullModelName, "BusLogic ");
    strcat((char*)HostAdapter->FullModelName, (char*)HostAdapter->ModelName);
   
    // Tagged Queuing is only allowed if Disconnect/Reconnect is permitted.
    // Therefore, mask the Tagged Queuing Permitted Default bits with the
    // Disconnect/Reconnect Permitted bits.
    HostAdapter->TaggedQueuingPermitted &= HostAdapter->DisconnectPermitted;
    
    // Select an appropriate value for Bus Settle Time either from a BusLogic
    // Driver Options specification, or from BusLogic_DefaultBusSettleTime.
    HostAdapter->BusSettleTime = BusLogic_DefaultBusSettleTime;
    
    // Indicate reading the Host Adapter Configuration completed successfully.
    return TRUE;
}// end BusLogic_ReadHostAdapterConfiguration

BOOLEAN 
BusLogic_InitializeHostAdapter(PHW_DEVICE_EXTENSION deviceExtension, 
                               PPORT_CONFIGURATION_INFORMATION ConfigInfo)
//_____________________________________________________________________________________________
// Routine Description:
//                  BusLogic_InitializeHostAdapter initializes Host Adapter.  This is the only
//                  function called during SCSI Host Adapter detection which modifies the state
//                  of the Host Adapter from its initial power on or hard reset state.
// Arguments:
//              1. device extension
//              2. port config information
// Return Value:
//              TRUE : Host Adapter initialization completed successfully
//              FALSE : Initialization failed 
//______________________________________________________________________________________________
{
  BusLogic_HostAdapter_T *HostAdapter = &(deviceExtension->hcs);
  BusLogic_ExtendedMailboxRequest_T ExtendedMailboxRequest;
  UCHAR RoundRobinModeRequest;
  UCHAR SetCCBFormatRequest;
  int TargetID, LunID;

  // Used when we get the Physical address of the mail boxes
  ULONG length;
  
  // Initialize the pointers to the first and last CCBs that are queued for
  // completion processing.
  HostAdapter->FirstCompletedCCB = NULL;
  HostAdapter->LastCompletedCCB = NULL;
  
  //  Initialize the Bus Device Reset Pending CCB, Tagged Queuing Active,
  //  Command Successful Flag, Active Commands, and Commands Since Reset
  //  for each Target Device.
  for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
  {
      HostAdapter->BusDeviceResetPendingCCB[TargetID] = NULL;
      HostAdapter->TargetFlags[TargetID].TaggedQueuingActive = FALSE;
      HostAdapter->TargetFlags[TargetID].CommandSuccessfulFlag = FALSE;
      
      HostAdapter->ActiveCommandsPerTarget[TargetID] = 0;
      for (LunID = 0; LunID < HostAdapter->MaxLogicalUnits; LunID++)
        HostAdapter->ActiveCommandsPerLun[TargetID][LunID] = 0;

      HostAdapter->CommandsSinceReset[TargetID] = 0;
  }
  
  // Convert virtual to physical mailbox address.
  deviceExtension->NoncachedExtension->MailboxPA =   ScsiPortConvertPhysicalAddressToUlong(
                                                                        ScsiPortGetPhysicalAddress(deviceExtension,
                                                                                                   NULL,
                                                                                                   deviceExtension->NoncachedExtension->MailboxOut,
                                                                                                   &length));

  HostAdapter->FirstOutgoingMailbox = (BusLogic_OutgoingMailbox_T *) deviceExtension->NoncachedExtension->MailboxOut;
  HostAdapter->LastOutgoingMailbox =  HostAdapter->FirstOutgoingMailbox + HostAdapter->MailboxCount - 1;
  HostAdapter->NextOutgoingMailbox =  HostAdapter->FirstOutgoingMailbox;

  HostAdapter->FirstIncomingMailbox = (BusLogic_IncomingMailbox_T *) deviceExtension->NoncachedExtension->MailboxIn;
  HostAdapter->LastIncomingMailbox =  HostAdapter->FirstIncomingMailbox + HostAdapter->MailboxCount - 1;
  HostAdapter->NextIncomingMailbox =  HostAdapter->FirstIncomingMailbox;

  //  Initialize the Outgoing and Incoming Mailbox structures.
  memset(HostAdapter->FirstOutgoingMailbox, 
         0,
         HostAdapter->MailboxCount * sizeof(BusLogic_OutgoingMailbox_T));
  memset(HostAdapter->FirstIncomingMailbox, 
         0,
         HostAdapter->MailboxCount * sizeof(BusLogic_IncomingMailbox_T));
  

  ExtendedMailboxRequest.MailboxCount = HostAdapter->MailboxCount;
  ExtendedMailboxRequest.BaseMailboxAddress = deviceExtension->NoncachedExtension->MailboxPA ;