From owner-freebsd-alpha Wed Nov 15 6:30:20 2000 Delivered-To: freebsd-alpha@freebsd.org Received: from duke.cs.duke.edu (duke.cs.duke.edu [152.3.140.1]) by hub.freebsd.org (Postfix) with ESMTP id BDAB237B661 for ; Wed, 15 Nov 2000 06:30:15 -0800 (PST) Received: from grasshopper.cs.duke.edu (grasshopper.cs.duke.edu [152.3.145.30]) by duke.cs.duke.edu (8.9.3/8.9.3) with ESMTP id JAA14594; Wed, 15 Nov 2000 09:30:15 -0500 (EST) Received: (from gallatin@localhost) by grasshopper.cs.duke.edu (8.11.1/8.9.1) id eAFEUF837110; Wed, 15 Nov 2000 09:30:15 -0500 (EST) (envelope-from gallatin@cs.duke.edu) From: Andrew Gallatin MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Date: Wed, 15 Nov 2000 09:30:14 -0500 (EST) To: wkb@freebie.demon.nl Cc: freebsd-alpha@FreeBSD.ORG Subject: Re: 4.2RC1 hosed on Tlaser In-Reply-To: References: X-Mailer: VM 6.43 under 20.4 "Emerald" XEmacs Lucid Message-ID: <14866.39772.756614.268360@grasshopper.cs.duke.edu> Sender: owner-freebsd-alpha@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org wkb@freebie.demon.nl writes: > > [handwritten transcript from console] > .. boot succeeds ok... > dwlpx0 (DWLPA PCI at kft0 hose0) > base = 0xb80000000 > mask = 0xf80000000 > hacked = 0xb80000000 > panic: hose encoding hack would clobber base address > > I have no clue what this means, any takers? > > :-( :-( > > Wilko Yes. We have a grody hack in 4-stable to store off the hose in a memory or i/o address so that the low-level chipset code knows which hose a particular I/O request is for. In this case, the SRM console has assigned a memory address which overlaps the high bits we're using for the hose hack. This means that this particular box won't work until Doug's hose fixes are backported to -stable. (see, for example, the diff between rev 1.14 of sys/alpha/tlsb/dwlpx.c and 1.13.) This box would probably work if you were shuffle hardware around or remove it until it the SRM console happened to not use such a large memory address. BTW, this hack is responsible for the caveat about NCR/Sym controllers only working on the first hose of multi-hose boxes. Sigh. Drew To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message