From owner-freebsd-scsi Wed Feb 17 11: 4:19 1999 Delivered-To: freebsd-scsi@freebsd.org Received: from feral.com (feral.com [192.67.166.1]) by hub.freebsd.org (Postfix) with ESMTP id 1422211233 for ; Wed, 17 Feb 1999 11:04:16 -0800 (PST) (envelope-from mjacob@feral.com) Received: from localhost (mjacob@localhost) by feral.com (8.8.7/8.8.7) with ESMTP id LAA08327; Wed, 17 Feb 1999 11:03:52 -0800 Date: Wed, 17 Feb 1999 11:03:52 -0800 (PST) From: Matthew Jacob X-Sender: mjacob@feral-gw Reply-To: mjacob@feral.com To: "Justin T. Gibbs" Cc: scsi@FreeBSD.org Subject: Re: Simple 2944 not handled? In-Reply-To: <199902171852.LAA03331@narnia.plutotech.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Thanks! I'll give this a try! On Wed, 17 Feb 1999, Justin T. Gibbs wrote: > In article you wrote: > > > > I'm having a heckuva a time with the the Adaptec driver- this is with > > kernels from 3.0 to today. > > > > The hardware is a SuperMicro P6DLH- or some such- single 300Mhz Pentium 2, > > two PCI busses, etc...I've had 1 through 4 Adaptec 2944 cards > > (differential 2940AU variants) installed in this box. > > My guess is that we've somehow messed up the external transceiver setup. > Unfortunately I've never had access to either a 2944 or an HVD peripheral, > so I've never tested the driver myself in this kind of configuration. I > do have some ideas of things you can try: > > 1) Try clearing ACTNEGEN in the SXFRCTL1. You can do this in > sys/dev/aic7xxx/aic7xxx.c:ahc_init(). The data book is unclear > on what effect this feature has in a differential setting > and it could be confusing the external HVD transceivers. > > 2) In ahc_pci.c, take a peek at the DEVCONFIG pci configuration space > register. My guess would be that bit 0 is set (DIFACTNEGEN). If it's > not set, try setting it. If it is set, try clearing it. > > Other than those two bits, I can't find any other bits that are specific > to differential configurations. > > -- > Justin > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message