From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: libata - success with 82801AA IDE Date: Wed, 29 Oct 2003 16:44:58 -0500 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <3FA034DA.8020102@pobox.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:53900 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id S261680AbTJ2VpL (ORCPT ); Wed, 29 Oct 2003 16:45:11 -0500 In-Reply-To: List-Id: linux-scsi@vger.kernel.org To: Pavel Roskin Cc: linux-scsi@vger.kernel.org Pavel Roskin wrote: > Hello! > > I just want to report that Intel 82801AA IDE controller (8086:2411) is > working with libata from 2.6.0-test9-bk3. I applied following patch: Cool. > I have a CD-ROM as master on the the secondary channel (normally seen as > /dev/hdc), but it doesn't support DMA, so it wasn't detected. Well, even so, ATAPI support is very incomplete at the moment. That's a bigger reason why PATA support isn't receiving more love, at the moment. > I don't know if there is any interest in developing the "parallel IDE" > support. I see that the option to enable it is not present in Linux > configuration. Anyway, that's a device that can be added to the > device table if PATA support is here to stay. I find it quite useful locally, and will be finishing up cable detection (currently PATA is limited to UDMA/33) soon. However, with my apologies, I won't be applying your patch -- for the moment. Before any more PATA PCI ids are added, I'll need to go through the docs and drivers/ide/pci/piix.c, to determine precisely PATA chipset speed limits: UDMA/133 for some, UDMA/100, etc. Your patch is a bit incorrect in that it does not truly reflect the maximum speed of the 82801AA chipset. In any case, the executive decision has been made "drivers/ide for PATA, libata for SATA", so that's the overall direction. Thanks, Jeff