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4-8 Compaq StorageWorks 64-Bit PCI-To-Fibre Channel Host Bus Adapter User Guide
Compaq Confidential – Need to Know Required
Writer: Bill Reitz Project: Compaq StorageWorks 64-Bit PCI-To-Fibre Channel Host Bus Adapter User Guide Comments:
Part Number: AA-RKPDA-TE 173941-001 File Name: E-CH4 TROUBLESHOOTING.DOCe-ch4 Troubleshooting.doc
Last Saved On: 12/22/99 10:10
AM12/20/99 6:07 PM
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)