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How to force aic7xxx using synchronous neg. mode

Hi,

i attached a SCSI RAID system to my debian box. The HBA is a Adaptec 29160.

dmesg shows that the RAID is attached with asynchronous negotiation:

Code:

scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 7.0

        <Adaptec 29160 Ultra160 SCSI adapter>

        aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs



  Vendor: SB-2800T  Model:                  Rev: 0001

  Type:  Direct-Access                      ANSI SCSI revision: 03

scsi0:A:0:0: Tagged Queuing enabled.  Depth 8

 target0:0:0: Beginning Domain Validation

 target0:0:0: wide asynchronous

 target0:0:0: FAST-80 WIDE SCSI 160.0 MB/s DT (12.5 ns, offset 31)

 target0:0:0: Domain Validation skipping write tests

 target0:0:0: Ending Domain Validation

The RAID should support synchronous negotiation. Cables and termination are set up correctly.

Is there a way to force the HBA to use synchronous neg.?

bg
substring

go into the adaptec's bios and turn off domain validation and set sync transfer manually.

Quote:

Originally Posted by rtspitz

go into the adaptec's bios and turn off domain validation and set sync transfer manually.

I tried this already, but the kernel driver ignores it, too. I.e. it still does the domain validation.