Date: Fri, 3 Nov 2000 17:01:48 +0800 From: John Summerfield <summer@OS2.ami.com.au> To: freebsd-hackers@FreeBSD.ORG Subject: Re: Broken PCI-IDE RZ1000 & ata Message-ID: <200011030901.eA391mt30196@possum.os2.ami.com.au> In-Reply-To: Your message of "Fri, 03 Nov 2000 09:32:11 %2B0100." <59063B5B4D98D311BC0D0001FA7E4522026D799F@l04.research.kpn.com>
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-------- > Dear All, > > > > > > > Well, that chip is so broken by design, no software workaround > > > > can help its misery, a hardware fix exists, but cant (easily) be > > > > > > As Volker notes; Linux can work round it. So can OS/2. I > > > don't know the details, but there ARE modes where it works. > > > > Nope, there are not, even the manufacturer agrees to that.... > > > As much as I like ... err ... technical discussion, perhaps it's time that > either side came up with something solid. "Linux can" and "Manufacturer > agrees" are not solid, IMHO. > > The Linux code states that the workaround is perfect in what source file? I did not say it's perfect. However, read this: /usr/src//linux-2.2/drivers/block/rz1000.c It starts: /* * linux/drivers/block/rz1000.c Version 0.05 December 8, 1997 * * Copyright (C) 1995-1998 Linus Torvalds & author (see below) */ /* * Principal Author: mlord@pobox.com (Mark Lord) * * See linux/MAINTAINERS for address of current maintainer. * * This file provides support for disabling the buggy read-ahead * mode of the RZ1000 IDE chipset, commonly used on Intel motherboards. * * Dunno if this fixes both ports, or only the primary port (?). */ The comments in OS/2 fixpacks tell how to use it on OS/2. Use the search program in the web pages at http://os2.ami.com.au/os2/ to locate directories with names beginning wr_0 (Warp 3) or wr_m0 (Warp 4), read the readmes. All it will establish is that they work; not what code trickery is needed. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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