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Date:      Mon, 30 Mar 1998 13:33:36 -0700
From:      "Justin T. Gibbs" <gibbs@plutotech.com>
To:        Mike Smith <mike@smith.net.au>
Cc:        "Justin T. Gibbs" <gibbs@plutotech.com>, Andre Albsmeier <andre.albsmeier@mchp.siemens.de>, hardware@FreeBSD.ORG
Subject:   Re: Tagged SCSI 
Message-ID:  <199803302037.NAA17226@pluto.plutotech.com>
In-Reply-To: Your message of "Mon, 30 Mar 1998 11:57:21 PST." <199803301957.LAA01184@dingo.cdrom.com> 

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>> > I think this is the entry SD_Q_NO_TAGS in scsiconf.c, right?
>> 
>> Only the NCR driver uses it.  All drivers in the CAM SCSI layer
>> honor these quirks, however, as the transport layer, not the controller
>> driver, dictates tag policy.
>
>This would explain why my adding this quirk entry doesn't help Jaz 
>drives hung off Adaptec controllers.  Is it possible to disable TCQ 
>using the card configuration, or are we SOL with this combination?

You could add code to honor the quirk to the Adaptec driver.  It
shouldn't be too hard.  Take a look in i386/scsi/aic7xxx.c:ahc_done().

--
Justin



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