Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755940AbXFJQDD (ORCPT ); Sun, 10 Jun 2007 12:03:03 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750886AbXFJQCy (ORCPT ); Sun, 10 Jun 2007 12:02:54 -0400 Received: from outpipe-village-512-1.bc.nu ([81.2.110.250]:57405 "EHLO the-village.bc.nu" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1750843AbXFJQCx (ORCPT ); Sun, 10 Jun 2007 12:02:53 -0400 Date: Sun, 10 Jun 2007 17:08:10 +0100 From: Alan Cox To: "Udo A. Steinberg" Cc: Linux Kernel Mailing List Subject: Re: libata limiting to UDMA/33 instead of UDMA/100 Message-ID: <20070610170810.71677857@the-village.bc.nu> In-Reply-To: <20070609132124.247a6646@laptop.hypervisor.org> References: <20070609132124.247a6646@laptop.hypervisor.org> X-Mailer: Claws Mail 2.9.1 (GTK+ 2.10.8; i386-redhat-linux-gnu) Organization: Red Hat UK Cyf., Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, Y Deyrnas Gyfunol. Cofrestrwyd yng Nghymru a Lloegr o'r rhif cofrestru 3798903 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1358 Lines: 37 On Sat, 9 Jun 2007 13:21:24 +0200 "Udo A. Steinberg" wrote: > Hi, > > After switching an older machine over from the PDC20265 PATA driver to the > libata driver pata_pdc202xx_old my HDDs are now limited to UDMA/33. With the > old driver they were happily running with UDMA/100. ... > > I'm including the relevant kernel output for both cases below. Thanks. > scsi0 : pata_pdc202xx_old > scsi1 : pata_pdc202xx_old > ata1: PATA max UDMA/100 cmd 0x00019400 ctl 0x00019002 bmdma 0x00018000 irq 0 > ata2: PATA max UDMA/100 cmd 0x00018800 ctl 0x00018402 bmdma 0x00018008 irq 0 > ata1.00: ata_hpa_resize 1: sectors = 60036480, hpa_sectors = 60036480 > ata1.00: ATA-5: IBM-DTLA-307030, TX4OA5AA, max UDMA/100 > ata1.00: 60036480 sectors, multi 16: LBA > ata1.01: ata_hpa_resize 1: sectors = 241254720, hpa_sectors = 241254720 > ata1.01: ATA-6: IC35L120AVV207-0, V24OA63A, max UDMA/100 > ata1.01: 241254720 sectors, multi 16: LBA48 > ata1.00: limited to UDMA/33 due to 40-wire cable > ata1.01: limited to UDMA/33 due to 40-wire cable What sort of cable is actually in use here ? Alan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/