4-8Compaq StorageWorks 64-Bit PCI-To-Fibre Channel Host Bus Adapter User Guide

Table 4-4

Parameter Error Values (valid only when CmdStat=0x3) continued

0x12 Offset

 

Explanation

0x22

 

IOERR_RESERVED

 

 

 

0x23

 

IOERR_RESERVED

 

 

 

0x24

 

IOERR_RESERVED

 

 

 

0x25

 

IOERR_ABORT_MULTI_REQUESTED

 

 

 

0x26

 

IOERR_RESERVED

 

 

 

0x27

 

IOERR_RESERVED

 

 

 

0x28

 

IOERR_LINK_BUFFER_SHORTAGE

 

 

 

0x29

 

IOERR_RCV_XRIBUF_WAITING

 

 

 

Windows NT SCSI Address Mapping

The driver emulates six SCSI buses per HBA to map all 126 possible AL_PA to Target IDs.

The first bus is a dummy bus used to delay the Windows NT initial inquiry scan until after discovery completes. The 31 target IDs per bus (Windows NT requires the initiator to consume one of the IDs, we use #31) are then mapped to either ascending or descending SEL_IDs (based on the ScanDown registry parameter).

NOTE: The first bus will be utilized if the parameter MapBus0=1 is used.

Fabric Device Mapping

In a fabric (switched) environment, devices are initially created based on the order that they are returned from the Simple Name Server (SNS). Once created (at boot), the devices continue to be tracked based on:

– WWPN:

HardAddress=0;MapNodeName=0

– NodeName:

HardAddress=0;MapNodeName=1

– D_ID:

HardAddress=1; (MapNodeName=don’t care)

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Compaq LP8000-F1 manual Windows NT Scsi Address Mapping, Fabric Device Mapping