From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from localhost.localdomain (adsl-64-109-89-110.chicago.il.ameritech.net [64.109.89.110]) by dsl2.external.hp.com (Postfix) with ESMTP id 43E8C482A for ; Sun, 14 Oct 2001 08:29:29 -0600 (MDT) Message-Id: <200110141428.f9EESss01949@localhost.localdomain> To: Grant Grundler Cc: James Bottomley , parisc-linux@lists.parisc-linux.org Subject: Re: [parisc-linux] Kernel panic with -pa48 In-Reply-To: Message from Grant Grundler of "Sat, 13 Oct 2001 16:12:09 MDT." <200110132212.QAA19397@puffin.external.hp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Sun, 14 Oct 2001 09:28:54 -0500 From: James Bottomley List-ID: grundler@puffin.external.hp.com said: > In general, drives smaller than 1GB are not reprogammable and thus > can't be upgraded. I don't know if C3325A is upgradeable. If it is, > the firmware for it *might* be on the same ftp site as platform > firmware - see the www.parisc-linux.org FAQ for the URL. And not sure > if there is a utility for linux to download SCSI device firmware. I believe the fw is upgradeable (if you can find it, it's not on the ftp site). Although, for a SCSI device driver writer, having misbehaving drives around to test with can be useful...it's a lot easier than trying to do sofware error injection. Perhaps you could answer some configuration questions I have (which is why I was thinking the reported errors were termination or cabling related). Richard Hirst got LinuxCare to send me a 712/60 and a 715/50. Both of these appear to have a SCSI bus running through the motherbord to a 50pin ribbon cable on one end and an external D50 SCSI-2 connector on the case. There appears to be no termination at all on the motherboard, is that correct? The 715/50 has slots for 3 SCSI drives along a ribbon cable which is terminated at one end. However, I don't believe the other end would be terminated unless I put a D50 SE terminator on the external connector. Was this the way they were usually delivered? The 712/60 is even stranger: It has one SCSI drive housing and a short ribbon cable with no termination. It looks like the correct configuration for this one would be to activate the drive's termination and also put a D50 terminator on the external connector? Unfortunately, the Micropolis drive it came with expired in a cloud of smoke when I turned it on. However, I was able to determine that the Micropolis was unterminated, so the internal bus was completely unterminated. What I'm hoping is that they didn't ship this way, they just evolved into these anomalous configurations over time as bits fell off and drives were replaced. The problem is that the new lasi700 driver is going to drive the SCSI bus (at least for the 53c710 based lasi subsystems) at about twice times the speed of the old one and with high REQ/ACK offsets, so what were marginal configurations may suddenly become non-functional ones. At the very least, I suppose I need to add sync and tag disable options to the driver. James