Subject: Re: disabling tagged queueing for SCSI1 devices
To: Paul Kranenburg <pk@cs.few.eur.nl>
From: Matthew Jacob <mjacob@feral.com>
List: tech-kern
Date: 02/10/2001 12:42:33
Sort of, because many CCS (SCSI-1, but not SCSI-2) drives support T'qing fine.
What issue are you trying to address hee?
On Sat, 10 Feb 2001, Paul Kranenburg wrote:
> Would there be any objection to turning off tagged queueing by default
> for SCSI 1 devices? E.g. like so:
>
>
> Index: scsiconf.c
> ===================================================================
> RCS file: /cvsroot/syssrc/sys/dev/scsipi/scsiconf.c,v
> retrieving revision 1.154
> diff -c -r1.154 scsiconf.c
> *** scsiconf.c 2001/01/18 20:28:21 1.154
> --- scsiconf.c 2001/02/10 20:06:03
> ***************
> *** 779,785 ****
> --- 779,789 ----
> sc_link->quirks |= SDEV_NOSYNC;
> if ((inqbuf.flags3 & SID_WBus16) == 0)
> sc_link->quirks |= SDEV_NOWIDE;
> + } else {
> + /* Turn off command tagging for SCSI 1 devices. */
> + sc_link->quirks |= SDEV_NOTAG;
> }
> +
> /*
> * Now apply any quirks from the table.
> */
>