[4210] in linux-scsi channel archive
Re: Adaptec AIC-7xxx AND Buslogic BT-958
daemon@ATHENA.MIT.EDU (Michael Necaise)
Wed Jun 24 09:22:37 1998
Date: Wed, 24 Jun 1998 09:09:01 -0400
From: Michael Necaise <necaise@home.com>
To: Brendan Miller <brmiller@wco.com>
CC: Franklin Black <d_baser@hotmail.com>, linux-scsi@vger.rutgers.edu
If I might suggest...
It sounds (looks) like you've got it recognizing the Adaptec controller
OK, however, it now looks like you've got cabling and termination
problems. The Adaptec boards are known to be particular about cables
and termination - they won't work until you've got it right. See below
for comments...
> Duh. Good idea. This almost works. At least I can have the drives attached
> to the 2940 powered on (with the 2940 BIOS disabled), and the BusLogic card
> is seen as scsi0. When it gets to loading the aic7xxx module, however,
> there are problems:
>
> aic7xxx: Warning - detected auto-termination on controller:
This is OK, means it's terminating at the controller though. It's not
going to see much past the connector this way.
> aic7xxx: <Adaptec AHA-294X Ultra SCSI host adapter> at PCI 11/0
> aic7xxx: Please verify driver detected settings are correct.
> aic7xxx: If not, then please properly set the device termination
> aic7xxx: in the Adaptec SCSI BIOS by hitting CTRL-A when prompted
> aic7xxx: during machine bootup.
Believe this.
> aic7xxx: Cables present (Int-50 NO, Ext-50 NO)
Here it's saying it's not seeing anything plugged into it. A sign
something isn't right with the cabling. Reseat all of the connectors.
Then make sure that there is a terminator at the end of the SCSI chain
(or, if you can, set the last drive in the chain to terminate the bus -
usually requires jumpers on the drive) If you're using any LVD drives
(I dont' think these are) with the ultra controllers, you need to use a
special cable with a differential terminator built into the end of it;
this is usually for ultra2 hardrives.
> aic7xxx: Termination Enabled
> (scsi1) <Adaptec AHA-294X Ultra SCSI host adapter> found at PCI 11/0
> (scsi1) Narrow Channel, SCSI ID=7, 16/255 SCBs
> (scsi1) BIOS disabled, IO Port 0x8000, IRQ 12
> (scsi1) IO Memory at 0xe1000000, MMAP Memory at 0x6841000
> (scsi1) Resetting channel
> (scsi1) Downloading sequencer code... 406 instructions downloaded
> scsi1 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.0.19/3.2.4
> <Adaptec AHA-294X Ultra SCSI host adapter>
> scsi : 2 hosts.
> (scsi1:0:-1:-1) Scanning channel for devices.
> (scsi1:-1:-1:-1) Allocating initial 30 SCB structures.
> (scsi1:-1:-1:-1) Bad scbptr 255 during SELTO.
> (scsi1:-1:-1:-1) Referenced SCB 255 not valid during SELTO.
> SCSISEQ = 0x12 SEQADDR = 0x9 SSTAT0 = 0x15 SSTAT1 = 0x88
>
Here it's telling you that messages sent out on the bus aren't being
responded to correctly - once again I suspect termination.
> Connected to the 2940 are an HP C3725S (ID 1) and a ZIP drive (ID 5).
> The kernel is 2.0.34 (smp), and I have applied the aic7xxx-5.0.19-2.0.34.patch
> patch.
>
> Now what?
>
> Brendan
>
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